• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a lighting device with a flat, elongated lighting unit and with a profile-shaped carrier component, wherein the lighting unit is arranged for fixing the same to the carrier component. The light unit has an at least partially translucent profile element with an at least partially U-shaped cross-sectional shape, opposing legs of the U-like cross-sectional shape extending substantially in the thickness direction of the lighting unit, and by the U-like cross-sectional shape is an inner region of the profile element with an intermediate formed formed the thighs opening. Furthermore, the lighting unit has a flat base part, which is arranged in the region of the opening and coupled to the profile element. The at least partially translucent profile element is formed with a first material, which opposes a deformation less resistance than a second material with which the flat base part is formed. In the interior, a light generating device for generating light that can be emitted by the lighting unit during operation is arranged here. Furthermore, the invention relates to a lighting unit, in particular for such a lighting device.
    公开号:AT519332A2
    申请号:T51042/2016
    申请日:2016-11-17
    公开日:2018-05-15
    发明作者:
    申请人:H4X E U；
    IPC主号:
    专利说明:

    SUMMARY OF THE INVENTION
    Against this background, the object of the invention is to provide a further developed lighting device with which undesirable effects of changes in the geometry of a construction or a building and / or of deformations of a component of the lighting device on the aesthetic effect of the lighting device can be avoided in an even better manner . Furthermore, a correspondingly developed lighting unit is to be created.
    According to the invention, this object is achieved by a lighting device with the features of patent claim 1 and / or by a lighting unit with the features of patent claim 22.
    Accordingly, a lighting device with a flat, elongated lighting unit and with a profile-shaped carrier component is proposed, the lighting unit being set up for fastening the same to the carrier component. The lighting unit has an at least partially transparent profile element with an at least partially U-shaped cross-sectional shape. Opposing legs of the U-like cross-sectional shape extend essentially in the thickness direction of the lighting unit, and the U-like cross-sectional shape forms an inner region of the profile element with an opening formed between the legs. Furthermore, the lighting unit here has a flat base part which is arranged in the region of the opening and is coupled to the profile element. According to the invention, this is translucent / 41 at least in sections
    Profile element formed with a first material which offers less resistance to deformation than a second material with which the flat base part is formed. A light generating device for generating light that can be emitted by the lighting unit during operation is arranged in the interior.
    Furthermore, a lighting unit, in particular for such a lighting device, is proposed, the lighting unit being designed to be flat and elongated and designed to be fastened to a profile-shaped support component. Here, the lighting unit has an at least partially translucent profile element with an at least partially U-like cross-sectional shape, opposite legs of the U-like cross-sectional shape extend essentially in the thickness direction of the lighting unit, and the U-like cross-sectional shape means that an inner region of the profile element is between the two Leg formed opening. The lighting unit also has a flat base part which is arranged in the region of the opening and is coupled to the profile element. The at least sectionally translucent profile element is formed with a first material which offers less resistance to deformation than a second material with which the flat base part is formed. A light generating device for generating light that can be emitted by the lighting unit during operation is arranged in the interior.
    The idea on which the invention is based is to design the lighting unit in such a way that the lighting unit reacts relatively flexibly and flexibly to deformations. For example, when a ceiling is lowered, with which the support component can be firmly coupled, for example, the lighting unit of the lighting device according to the invention can consequently follow and adapt to any deformation of the support component. Likewise, an improved adaptation of the lighting unit to deformations of the carrier component can also be achieved if the deformation of the carrier component is due to other causes, for example to weight forces acting over longer lengths.
    The improved flexibility of the lighting unit is made possible, in particular, by the fact that the at least partially transparent profile element is designed with a U4 / 41-like cross-sectional shape, while the base part is flat. An interior area for the lighting unit is created with the help of the U-shaped cross-sectional shape of the profile element. The cross-sectional shape of the profile element can, in particular, be essentially U-shaped as a whole. Due to the flat design, the base part can be deformed comparatively easily by bending, even if it is formed with a material which, due to its material properties, offers a relatively high resistance to deformation. The at least sectionally translucent profile element, on the other hand, is formed with a more easily deformable material, as a result of which the lighting unit as a whole is sufficiently flexible and flexible despite the U-like cross-sectional shape of the profile element.
    Thus, an aesthetic appearance of the lighting device is even better and easier achieved in the case of moving up. Because the lighting unit follows the deformation of the carrier component better, deviations in the desired alignment and positioning of the lighting unit with respect to the carrier component and / or undesired non-flush transitions can be avoided more easily.
    Furthermore, a further improved fastening of the lighting unit to the carrier component can also advantageously be achieved. Undesired force effects between the lighting unit and the carrier component can at least be reduced with the aid of the flexibility of the lighting unit. With regard to the fastening of the lighting unit in or on the carrier component, this can also contribute to an improved holding effect in the event of vibrations. As a result, the lighting unit and lighting device according to the invention can offer advantages when used in environments in which vibrations occur frequently, for example when heavy vehicles such as trains, trucks or construction site vehicles are frequently moved in the vicinity. For example, the lighting unit or lighting device according to the invention can be advantageous when used in or near a train station. In addition, it is conceivable that the lighting unit and lighting device proposed according to the invention can be used with advantage even in the event of severe vibrations, such as those that occur during an earthquake.
    / 41
    Advantageous refinements and developments of the invention result from the subclaims and from the description with reference to the figures of the drawing.
    In one configuration, an elastic modulus of the first material is lower than an elastic modulus of the second material. As such, the first material as such presents less resistance to elastic deformation than the second material.
    In one embodiment, the at least partially transparent profile element is designed as a profile made of the first material and the flat base part as a profile made of the second material. The flat base part can thus give the lighting unit sufficient stability without resulting in excessive rigidity of the lighting unit. At the same time, a sufficient interior area can be created with the profile element by using the first material, without the U-like cross-sectional shape and in particular its legs increasing the rigidity of the lighting unit excessively.
    In one embodiment, the lighting unit can be detachably fastened to the carrier component. Thus, the lighting unit can advantageously be detached from the carrier component after the first installation, for example for retrofitting the lighting unit or replacing it if damaged.
    In one configuration, at least one device for fastening the lighting unit to the carrier component is arranged on the base part. Means provided for fastening the lighting unit are thus arranged on a component which is formed with the second material, which as such resists deformation to a greater extent than the first material of the profile element. Thus, the forces which act in the course of fastening and holding the lighting unit can be introduced into a component of the lighting unit formed with a relatively resistant material.
    According to a further development, at least one device on the support component side is arranged on the support component and cooperates with the device on the base part side for fastening the lighting unit to the support component.
    / 41
    This means that the lighting unit can be fastened to the carrier component quickly and effectively, in particular releasably.
    According to a further development, it is provided that the lighting unit can be fastened to the carrier component by means of magnetic force and / or that the lighting unit can be positively fastened to the carrier component by means of a snap. Magnetic fastening makes it possible to hold the lighting unit reliably and effectively on the carrier component, and also avoids wear processes and moving and / or elastic components. In particular in the case of settlement processes or other processes that lead to a deformation of the support component, the attachment of the lighting unit using magnetic force can prove to be advantageous, since, for example, displacement movements of the lighting unit relative to the support component, as can occur in the aforementioned deformation processes, are permitted without loosening the attachment. Fastening the lighting unit by means of a snapper, or a different type of form-fitting snap-in fastening, offers a reliable positive locking coupling of the lighting unit to the carrier component and can save weight.
    In one configuration, the carrier component for fastening the lighting unit is provided with at least one ferromagnetic element. In this way, the carrier component is set up for effective magnetic fastening of the lighting unit to the carrier component.
    In this case, the ferromagnetic element is preferably of sheet-like or strip-like design. In particular, the ferromagnetic element is held in a groove of the carrier component on the carrier component. In this way, space in the thickness direction of the lighting unit can be saved, which is advantageous for a flat design of the lighting unit. In addition, holding the ferromagnetic element in the groove enables a simple, yet reliable coupling of the same to the carrier component.
    / 41
    In one configuration, the lighting unit has at least one magnet, in particular a permanent magnet, for fastening the lighting unit. Effective magnetic fastening of the lighting unit is thus successful.
    The magnet is preferably designed in the form of a strip. With a strip-shaped design of the magnet, space can also advantageously be saved, in particular in the thickness direction of the lighting unit.
    In particular, the magnet can be held in a groove of the base part on the base part. The groove enables simple and reliable coupling of the magnet to the base part.
    In one configuration, the light generating device has at least one LED board, which is arranged adjacent to one of the legs in the inner region of the profile element. Light can thus be provided in an efficient, energy-saving manner, the LED circuit board advantageously not interfering with the light output by the lighting unit during operation due to its arrangement adjacent to the leg.
    In one configuration, the lighting unit has an insulation element which is designed in the form of a film or a layer and is arranged on a side of the flat base part which faces the inner region, in order to shield the base part in an electrically insulating manner from the LED circuit board. This configuration advantageously prevents electrical contact of the LED circuit board with the base part and thus helps to enable the lighting unit to be operated with electrical current at higher voltages, for example at voltages above the maximum permissible contact voltage. The distance between the circuit board and the base part can be kept small, which is advantageous for a compact, flat design of the lighting unit. Operating at a higher electrical voltage advantageously enables lower electrical currents in the lighting unit and, for example, the use of modified converters or, in some configurations, the possibility of operating the lighting unit without an additional electronic ballast.
    / 41
    In one embodiment, the insulation element projects beyond the edge of the LED board in a direction transverse to the LED board. Here, the LED board extends in particular transversely, preferably essentially perpendicular, to the insulation element. In particular, the insulation element projects beyond the edge of the LED board to the leg adjacent to the LED board. The protruding arrangement further improves the electrical shielding of the base part from the board. The path of any leakage currents from the board to the base part is increased. Leakage currents can be avoided or at least significantly reduced.
    According to a development, the insulation element projects beyond a side edge of the flat base part to the leg of the U-like cross-sectional shape adjacent to the LED circuit board. In this way, the shielding and insulation effect of the insulation element is further improved.
    In a further embodiment, the insulation element extends in an edge region thereof into a groove in the at least partially transparent profile element. This can also contribute to a further improved electrical insulation and shielding effect by the insulation element.
    In a further development, the insulation element is formed with an electrically insulating plastic. In particular, the insulation element can be formed with a film or layer of such a plastic.
    According to a development of the invention, a plate-shaped light guide element is arranged essentially parallel to the flat base part in the inner region, the light generating device for a lateral light feed into the light guide element being arranged adjacent to an edge region of the light guide element. By means of such a side feed (also called edge coupling or side coupling, and also referred to as “edge lighting” in English), a good and uniform lighting effect of the lighting unit can be achieved with a small size of the lighting unit in its thickness direction, in addition, the required number of LEDs ( LEDs) decreased.
    / 41
    In one embodiment, the lighting unit has a reflector between the flat base part and the light guide element. Thus, the light provided by the LEDs and fed into the light guide element can be used efficiently for the desired lighting effect, and losses can be avoided.
    In one embodiment, the insulation element is arranged between the flat base part and the light guide element and is designed as a reflector and / or is provided with a light-reflecting component, in particular a light-reflecting layer or coating. In this way, a component can advantageously take over the functions of the insulation element and of the reflector, which reduces the number of components of the lighting device and simplifies the assembly of the lighting unit.
    In one configuration, a free space is formed adjacent to a floor of the inner region and is designed to accommodate a plate-shaped optical element, in particular a microprismatic plate, if necessary. A microprismatic plate makes it possible to vary the lighting effect achieved and / or to provide additional glare control.
    According to a preferred development, the at least partially transparent profile element is made of a plastic material as the first material.
    In particular, in a preferred development, the plastic material from which the at least partially transparent profile element is formed can be a polymethyl methacrylate (PMMA).
    In one configuration, the flat base part is designed as a base profile made of a metal material as the second material.
    In a preferred development, the metal material from which the base profile is formed can be aluminum or an aluminum alloy.
    / 41
    In particular with a combination of a profile element which is transparent at least in sections and made of a plastic material and one made of a
    Flat base part made of metal material can have material properties for that
    Profile element and the base part can be achieved, which make sufficient stability and at the same time good flexibility of the lighting unit possible.
    In one configuration, the base part and the at least partially translucent profile element each have connecting devices which are designed to correspond to one another to form-fitly connect the base part and the profile element to one another. Thus, the profile element can be reliably connected to the base part in a simple manner.
    In one configuration, the carrier component is designed as a carrier profile made from a metal material. The carrier component can thus be equipped with the required stability.
    According to a preferred development, the metal material from which the carrier profile is formed can be aluminum or an aluminum alloy.
    In one configuration, the carrier component is designed with a receiving area for receiving the lighting unit.
    According to one embodiment, the lighting unit can be received in the carrier component and / or fastened to the carrier component in such a way that the lighting unit is essentially flush with the carrier component on one visible side of the lighting unit. Such an illumination device can appear particularly appealing from an aesthetic point of view.
    In one embodiment, the carrier component is designed to be permanently mounted on a building or a structure fastened to a building. According to an alternative embodiment, the carrier component can be designed to be attached to a structure or to a structure attached to a structure.
    / 41
    In embodiments, the construction can be a plate construction, in particular a plasterboard construction, or a substructure for it. The construction can be arranged in particular in the ceiling area or in the wall area.
    In particular, in one embodiment of the invention, the carrier component can be designed for at least partial installation in the plate construction.
    In one development, the carrier component can be designed entirely or at least in sections as a plaster profile.
    Furthermore, in a further development, the lighting device can have an additional plastering profile, in which the carrier component can be received in sections, the carrier component and the plastering profile being set up for firmly fastening the carrier component to the additional plastering profile.
    In one embodiment, the support component can be set up to be permanently installed in a recess in a solid ceiling or wall.
    In further developments, the additional plastering profile can be designed for at least partial installation in the plate construction or can be designed to be permanently installed in a recess in a solid ceiling or wall.
    In a further embodiment, the carrier component can be set up to be mounted on a plate construction, in particular a plasterboard construction, or on a solid wall or ceiling.
    In a further embodiment, the lighting device has hanging means for the hanging fastening of the carrier component. In this embodiment, the carrier component and the lighting unit attached to the carrier component can thus serve as a suspended lamp.
    / 41
    With the above-mentioned further developments of the carrier component, in particular for installation in a wall or ceiling or plate construction or for mounting on a wall or ceiling or plate construction or for a hanging attachment, a variety of lighting requirements can be met.
    The above refinements and developments can, if appropriate, be combined with one another as desired. Further possible refinements, developments and implementations of the invention also include combinations of features of the invention described above or below with reference to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.
    CONTENTS OF THE DRAWING
    The present invention is explained in more detail below with reference to the exemplary embodiments given in the schematic figures of the drawings. Here show:
    Fig. 1
    Fig. 2
    Fig. 3
    Fig. 4
    5 shows a lighting device according to a first exemplary embodiment of the invention in a cross-sectional view;
    a lighting device according to a second embodiment of the invention in a cross-sectional view;
    a lighting device according to a third embodiment of the invention in a cross-sectional view;
    a lighting device according to a fourth embodiment of the invention in a cross-sectional view;
    a lighting device according to a fifth embodiment of the invention in a cross-sectional view;
    / 41
    6 shows a lighting device according to a sixth exemplary embodiment of the invention in a cross-sectional view; and
    Fig. 7 shows a lighting unit of a lighting device according to the first, second, third, fourth or fifth embodiment in an exploded view.
    The accompanying drawings are intended to provide further understanding of the embodiments of the present invention. They illustrate embodiments and, in conjunction with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the advantages mentioned result from the drawings. The elements of the drawings are not necessarily shown to scale with respect to one another.
    In the figures of the drawing, elements, features and components that are the same, have the same function and have the same effect — unless otherwise stated — are each provided with the same reference symbols.
    DESCRIPTION OF EMBODIMENTS
    A lighting device 1 according to a first exemplary embodiment is shown in FIG.
    in cross section. The lighting device 1 has a lighting unit 2, which is flat and elongated. 1, a transverse direction Q and a thickness direction D of the lighting unit 2 are shown. Furthermore, the lighting device 1 has a profile-shaped carrier component 3. A longitudinal direction L of the lighting device 1, which in the state of FIG. 1 also corresponds to a longitudinal direction of the lighting unit 2 and a longitudinal direction of the carrier component 3, is projected in FIG. 1 and can be seen in FIG. 7.
    The carrier component 3 is designed as a carrier profile and is made of a metal material, for example aluminum or an aluminum alloy, is formed with a substantially constant cross section along the longitudinal direction and is, for example, extruded. In the cross section of FIG. 1, the carrier component 3 has a U-shaped cross-sectional shape that is open at the bottom.
    / 41
    In Fig. 1, the support component 3 is attached directly to rails 5 of a substructure of a suspended false ceiling, which is formed as a plate construction with plate elements 7. The carrier component 3 is accommodated within the thickness or thickness of the plate elements 7, wherein a dimension t of the carrier component 3 in the thickness direction D can be, for example, t <13 mm. The plate elements 7 can, for example, be Rigips plate elements. The fixed connection of the carrier component 3 to the rails 5, of which only one is shown as an example in FIG. 1, can be effected by means of screws 11 which are only shown schematically. The support component 3 is thus firmly connected to the substructure of the false ceiling, which in turn is attached to a structure, not shown, in particular to a solid raw ceiling. A plane E (drawn with two-dot chain lines in FIG. 1) forms the outside of the false ceiling facing a room in FIG. 1. After fastening the carrier component 3 to the rails 5, the carrier component 3 can be plastered in from the outside of the false ceiling in order to achieve a clean connection to the plate elements 7. For this purpose, the carrier component 3 in FIG. 1 is designed as a plastering profile and is provided with a plurality of teeth 4 on the sides facing outwards, which improve the connection of the plaster and carrier component 3.
    The carrier component 3 has a receiving area 13, in which the lighting unit 2 is accommodated such that the lighting unit 2 is flush with the carrier component 3 on a visible side S of the lighting unit 2. The carrier component 3 and the lighting unit 2 thus end in the vertical direction, parallel to the thickness direction D, at the level of the plane E. The lighting unit 2 can be seen in FIG. 1 as an insert which can be inserted into the carrier component 3.
    The lighting unit 2 has a translucent profile element 17, the cross-sectional shape of which is essentially U-shaped with two opposing legs 19 and an essentially flat base section 20. The legs 19 extend in the thickness direction D. The lighting unit 2 is set up to emit light essentially in the area of the base section 20 through the latter. Due to the U-like cross-sectional shape of the profile element 17, a / 41
    Inner region 23 of the profile element 17 is formed, in which light generating devices 29 are arranged. The light to be emitted by the lighting unit 2 can be provided during operation by means of the light generating devices 29.
    The translucent profile element 17 is made as a profile from a plastic material, in particular polymethyl methacrylate (PMMA).
    The lighting unit 2 also has a flat base part 31, which is designed as a flat base profile and is made from a metal material, in particular from aluminum or an aluminum alloy.
    An opening 37 is formed between the legs 19 of the profile element 17. The base part 31 is arranged in the region of the opening 37, coupled to the profile element 17, and essentially closes the opening 37.
    The base part 31 is equipped with a rib-like projection 41 in the region of its opposite longitudinal edges. In contrast, the legs 19 in their end regions, which delimit the opening 37, are also each formed with a projection 43 which extends along the longitudinal direction L of the profile element 17 along the opening 37. While the projections 41 point outwards in the transverse direction Q of the lighting unit 2, the projections 43 point inwards in the transverse direction Q, towards the center of the opening 37. The projections 41 and 43 are designed as connecting devices for the positive connection of the translucent profile element 17 and the flat base part 31. In each case a projection 41 is designed to correspond to a projection 43. When base part 31 and profile element 17 are put together, they can lock together and are thus reliably held together.
    The lighting unit 2 is detachable in FIG. 1 by means of magnetic force and is thus exchangeably fastened to the carrier component 3. For this purpose, facilities on the base part side and on the support component side are provided.
    The carrier component 3 has two parallel grooves 47 which run in the longitudinal direction L of the carrier component 3 facing the receiving region 13. For the / 41 magnetic fastening of the lighting unit 2, an elongated, sheet or strip-like ferromagnetic element 49 is arranged in each of the grooves 47. The ferromagnetic element 49 extends essentially over the entire length of the carrier component 3 in its longitudinal direction. By means of an inverted T-shaped design of each of the flat grooves 47, see FIG. 1, the ferromagnetic element 49 is reliably held on the carrier component 3. Each of the two ferromagnetic elements 49 is preferably designed as a steel sheet and inserted into the respective groove 47.
    The ferromagnetic elements 49 have only a slight expansion in the direction of thickness D compared to their extension in the transverse direction Q and thus require little space, in particular in the direction of thickness D. This is advantageous for a flat design of the lighting unit 2.
    The flat base part 31 is provided with two parallel grooves 51 on a side facing away from the profile element 17 and from its inner region 23 and in the state of FIG. 1 towards the ferromagnetic elements 49, in FIG. 1 the top side of the base part 31. A permanent magnet 53 is arranged in each of the grooves 51. The two permanent magnets 53 are used to fasten the lighting unit 2 to the carrier component 3 in that the permanent magnets 53 magnetically adhere to the ferromagnetic elements 49.
    Each of the permanent magnets 53 is strip-shaped, but does not extend in the longitudinal direction L of the lighting unit 2 over the entire length of the lighting unit 2. Although only two permanent magnets 53 are shown in FIGS. 1 and 7, the lighting unit 2 can be spaced along its longitudinal direction, e.g. . B. be equipped with pairs of permanent magnets 53, such as that the lighting unit 2 has four or six or eight or even more permanent magnets 53.
    The strip-shaped design of the permanent magnets 53 in turn enables space to be saved in the thickness direction D of the lighting unit 2. In cross section, see FIG.
    1, the permanent magnets 53 are trapezoidal. The grooves 51 are each undercut and designed to correspond to the trapezoidal shape of the permanent magnets 53 in such a way that the permanent magnets 53 are each reliably and positively held in the associated groove 51 on the base part 31.
    The permanent magnets 53 thus serve as devices on the base part side and the ferromagnetic elements 49 as devices on the support component side, wherein devices on the base part and support component side cooperate for fastening the lighting unit 2 to the support component 3.
    The light generating devices 29 each have an LED circuit board 61 which is equipped with light-emitting diodes (LEDs) 62. In FIG. 1, the lighting unit 2 has two LED boards 61, which are each arranged in the inner region 23 adjacent to one of the legs 19. Each of the assembled LED boards 61 is preferably inserted from an end face of the profile element 17 into its inner region 23.
    Furthermore, a plate-shaped light guide element 67 is arranged in the inner region 23 parallel to the base part 31. In the cross section of FIG. 1, the light guide element 67 also extends parallel to the bottom section 20 of the cross-sectional shape of the translucent profile element 17. The light guide element 67 can, for example, be provided with lasered dots and / or be printed and / or embossed. The LEDs 62 are used to feed light laterally into the edge areas 68 of the light guide element 67. This is also known as edge or side coupling. For this purpose, the LED boards 61 are arranged adjacent to the edge areas 68. With a small size in the thickness direction D and also with a relatively small number of LEDs 62 required, a uniform lighting effect is achieved by the lighting unit 2 in the region of the base section 20.
    Between the base part 31 and the light guide element 67, an insulation element 71 is arranged parallel to them on a side of the base part 31 facing the inner region 23, which essentially fills a distance between the base part 31 and the light guide element 67. The base part 31 is shielded from the LED boards 61 in an electrically insulating manner by means of the insulation element 71. This prevents electrical contact between the LED boards 61 and the base part 31. This is advantageous if the lighting unit 2 is to be operated with electrical current at relatively high voltages, for example above the maximum permissible contact voltage.
    The insulation element 71 is formed with a film with an electrically insulating plastic material. The insulating element 71 thus creates an electrically insulating plastic layer between the flat base part 31 and the LED boards 61.
    The insulation element 71 is also designed as a reflector, and therefore also has a reflection effect in addition to its insulation function. Due to the design as a reflector, the insulation element 71 ensures that the light generated by the LEDs 62 is essentially radiated through the base section 20 in the desired manner and losses are avoided.
    For this purpose, the plastic film of the insulation element 71 can be provided with a light-reflecting layer or coating. The insulation element 71 thus has an electrically insulating plastic layer and a light-reflecting layer in a film-shaped component.
    Each of the LED boards 61 is arranged essentially perpendicular to the insulation element 71 adjacent to an associated edge region 73 of the insulation element 71, the LED boards 61 each extending essentially along the thickness direction D of the lighting unit 2 and thus parallel to the legs 19.
    Here, the insulation element 71 is parallel to the transverse direction Q and thus transversely to each of the LED boards 61 on the outside, towards the respective adjacent leg 19, over an edge 63 of the LED board 61. In this way, the path that any leakage currents have to travel from the LED circuit board 61 to the base part 31 is increased, and the path of the leakage current that may occur now leads around the edge region 73 of the insulation element 71. Leakage currents are thus prevented or kept sufficiently low, with at the same time a small distance between the circuit boards 61 and the base part 31 and thus a flat and compact design of the lighting unit 2.
    / 41
    Furthermore, the insulation element 71 also protrudes on both sides over a side edge 33 of the flat base part 31 in the direction of the legs 19 of the U-like cross-sectional shape, which the LED boards 61 are adjacent to. In addition, see FIG. 1, a groove 79 is provided in each of the legs 19 on the side thereof facing the inner region 23. In both opposite edge areas 73, the insulation element 71 extends into one of the grooves 79. In this way, the shielding and insulating effect of the insulation element 71 can be further increased.
    A free space 83 is formed adjacent to a bottom 24 of the inner area 23, which is formed by a surface of the profile element 17 facing the inner area 23 in the area of the bottom section 20. If necessary, a plate-shaped optical element, in particular a micro-prismatic plate, not shown in the figures, can be accommodated in the free space 83 in order to vary the illumination effect achieved and / or to enable additional glare reduction. To form the free space 83, the translucent profile element 17 has two ribs 89 protruding from the bottom 24, each of which runs adjacent to one of the legs 19, but is shorter than the legs 19. The light guide element lies on the ribs 89, see FIG. 1 67 near the edge areas 68 thereof, which creates a distance from the floor 24 and allows the free space 83. The LED board 61 is also arranged between each leg 19 and the rib 89 adjacent to this leg 19, the rib 89 being able to provide additional guidance and additional support for the LED board 61.
    Although the profile element 17 has the ribs 89, the grooves 79 and the projections 43, the cross-sectional shape of the profile element 17 in its entirety, that is to say as a whole, is essentially U-shaped.
    In all of the second to fifth exemplary embodiments described below with reference to FIGS. 2-5, the lighting unit 2 is designed in the same way as described above and in the following for the first exemplary embodiment. With regard to the lighting unit 2, reference is also made to FIGS. 2-5, in which details of the lighting unit 2 are additionally provided with reference numerals for the sake of a better overview in FIG. 1.
    / 41
    For the design of the lighting unit 2, reference is also made to the exploded view of FIG. 7, which in particular also shows the shorter design of the permanent magnets 53 compared to the overall length of the lighting unit 2. In addition, an end cover 59 for the lighting unit 2 and a fall protection 55 are shown in FIG. 7. In addition, the longitudinal direction L is additionally drawn in FIG. 7, so that in the inserted state of FIG. 1 both the longitudinal direction of the lighting device 1 (not shown completely in FIG. 7) and the longitudinal direction of the lighting unit 2 and the longitudinal direction of the (in FIG. 7 not visible) carrier component 3 is meant.
    In the first embodiment of FIG. 1, the support component 3, which is designed as a plastering profile, is firmly connected with a solid ceiling via the rails 5, for example screwed tightly to the rails 5 with force. If settlement processes occur in the building, as can occur in particular in new buildings, deformation and in particular a lowering of the solid ceiling, for example in the order of a few millimeters, can occur within the permissible range. In such a case, the fixed connection of the support component 3 and the structure (not shown in FIG. 1) can lead to a deformation of the support component 3, for example a bending and / or a warping.
    By designing the translucent profile element 17 from a plastic material in combination with designing the base part 31 from a metal material, the lighting unit 2 can be given a flexibility and flexibility which makes it possible to adapt the lighting unit 2 to such deformations.
    The plastic material of the profile element 17 here forms a first material and the metal material of the base part 31 forms a second material, the first material providing less resistance to elastic deformation than the second material. The modulus of elasticity of the first material is thus lower than the modulus of elasticity of the second material. If, as is preferred for the exemplary embodiment in FIG. 1, a polymethyl methacrylate (PMMA) is used as the first material and an aluminum alloy is used as the second material, the elasticity / 41 modulus of the aluminum alloy becomes greater by a factor of approximately 20 or more than that Modulus of elasticity of the PMMA. Taking into account the different moments of inertia of the profile element 17 and the base part 31, the relatively flat design of the base part 31 can achieve sufficient flexibility of the lighting unit 2 as a whole. The U-like cross-sectional shape of the profile element 17 does not lead to an excessive increase in the rigidity of the lighting unit 2. At the same time, the forces 53 required for fastening and holding the lighting unit 2 are introduced into a stable metal component by means of the magnets 53.
    The magnetic fastening of the lighting unit 2 to the carrier component 3 in this case, in combination with the flexibility of the lighting unit 2, has the advantage that loosening of the fastening is avoided when the geometry of the carrier component 3 changes. The flexibility of the lighting unit 2 avoids excessive stresses in it, fastening points are thus less stressed, and the magnets 53 reliably adhere to the ferromagnetic elements 49. In addition, the magnetic fastening allows displacements between the carrier component 3 and the lighting unit 2, which may result from the deformation of the carrier component 3, without the fastening being released.
    The embodiment of FIG. 1 is therefore not only advantageous in the case of settlement processes in a building, but also an improved resistance to vibrations can be achieved, i.e. e.g. B. in the case of a vibrating deformation of the carrier component 3. This can be useful, for example, when using the lighting device 1 in environments in which vibrations and shocks occur more frequently, since in this way in particular the security of the fastening can be increased.
    In the first exemplary embodiment in FIG. 1, an electrical connection device 95 of the lighting unit 2, for example a connection box, is completely hidden in or behind the false ceiling formed with the plate elements 7. The lighting unit 2 of the lighting device 1 can be operated, for example, together with a ceiling throw-in converter (not shown), which is arranged outside the lighting unit 2.
    / 41
    In a variant of the exemplary embodiment in FIG. 1, the carrier component 3 can be designed to be installed in a recess, not shown in the figure, in a solid ceiling or wall and to be fixed firmly in the recess. Analogous to the illustration in FIG. 1, a flush finish in plane E, which in this case illustrates the surface of the solid ceiling or wall, can be achieved by plastering.
    In the second to fifth exemplary embodiments, the lighting unit 2 is fastened to the carrier component in the same way and with the advantages mentioned above by means of magnetic force as in the first exemplary embodiment. With regard to the design of the lighting unit 2 and its coupling to the carrier component, reference is made to the above explanations regarding the first exemplary embodiment.
    2 shows a lighting device 101 according to a second exemplary embodiment. The lighting device 101 has a support component 103 and differs from the lighting device 1 in that the support component 103 is not designed as a plastering profile, but rather has flanges 106 which are visible after installation of the support component 103 in a suspended false ceiling, which forms a plate construction remain, the flanges 106 resting on the outside of the false ceiling, shown schematically in FIG. 2 by the plane E. As in the first exemplary embodiment, the carrier component 103 is formed as a carrier profile from a metal material, for example aluminum or an aluminum alloy, for example extruded. With regard to the fastening of the support component 103 to a substructure of a false ceiling, reference is made to the above explanations for the first exemplary embodiment.
    Alternatively, the carrier component 103 according to FIG. 2 can be set up to be installed in a recess (not shown in the figure) in a solid ceiling or wall and to be fixed firmly in the recess, the flanges 106 then being on the surface of the solid ceiling or wall , which in this case is formed by plane E, lie analogously to the illustration in FIG. 2.
    / 41
    A lighting device 201 according to a third exemplary embodiment is shown in FIG. 3. The lighting device 201 has a support component 203 and differs from the lighting device 1 in that the support component 203 is set up to be mounted on a ceiling, which can be a solid ceiling or an intermediate ceiling as a plate construction. In this case, therefore, no section of the carrier component 203 extends into the ceiling or false ceiling. A plane E in Fig. 3 illustrates the visible outside of the solid ceiling or the false ceiling. The support component 203 can be firmly connected to the solid ceiling or a substructure of the false ceiling, for example by screwing. Alternatively, an attachment in the wall area can be considered. Screws 11 are shown by way of example in FIG. 3. The lighting device 201 thus sits as a whole on the ceiling or wall or plate construction.
    As in the previous exemplary embodiments, the carrier component 203 is produced as a carrier profile from a metal material, for example aluminum or an aluminum alloy, for example by extrusion. However, the support component 203 has a first section 203a and a second section 203b, the second section 203b being formed with the receiving area 13 for the lighting unit 2 and the first section 203a serving as a foot for fastening the support component 203 to the ceiling. The first section 203a also has an interior 203c, in which a converter 96 connected to the lighting unit 2 is accommodated.
    FIG. 4 shows a lighting device 301 according to a fourth exemplary embodiment. The lighting device 301 has a carrier component 303 which is designed in the same way as the carrier component 203 of FIG. 3 and has a first section 303a and a second section 303b. Again, the second section 303b has the receiving area 13 for the lighting unit 2, while a converter 96 is received in an interior 303c of the first section 303a. However, the lighting device 301 differs from the lighting device 201 in that the first section 303a is received in sections within an inverted U-shaped plaster profile 306 between its legs 306a. The plastering profile 306 can be arranged, for example, in the area of an intermediate ceiling and can be fixedly mounted on a substructure of the intermediate ceiling, analogous to the fastening of the support component 3 in FIG. 1. A plane E, which forms the outside of the false ceiling, is shown in FIG. 4 for illustration. By plastering the plaster profile 306, which has teeth 4 for better adhesion of the plaster to the outside of the legs 306a, a clean transition is achieved in the region of the ends of the legs 306a.
    A portion of the first section 303a thus sits in the fourth embodiment within the plaster profile 306 between the legs 306a. The carrier component 303 is firmly connected to the plaster profile 306, for example by screwing. Screws 11 to form such a fixed connection are indicated by way of example in FIG. 4. The carrier component 303 is thus connected in FIG. 4 to a building via the plaster profile 306 and, for example, the substructure of the false ceiling. In the fourth exemplary embodiment, electronic and electrical components in the form of converter 96 can thus be hidden at least in sections in the ceiling, in contrast to FIG. 3.
    The carrier component 303 is in turn made as a carrier profile from a metal material, such as aluminum or an aluminum alloy, for example by extrusion. The plaster profile 306 is also preferably made of a metal material, for example aluminum or an aluminum alloy, for example extruded.
    A lighting arrangement 401 according to a fifth exemplary embodiment is shown in FIG. 5. The lighting arrangement 401 has a carrier component 403, which is designed in the same way as the carrier component 203 or 303 of FIGS. 3 and 4. In the fifth exemplary embodiment, the carrier component 403 is fastened in the ceiling area by means of suitable hanging means 410, which may include ropes and / or rods or bars, for example. The attachment can be carried out, for example, on a solid ceiling or a structure (not shown) attached to the solid ceiling. A ceiling level E is again shown in FIG. 5. It goes without saying that the lighting device 401 can have a relatively long length and can be suspended from the ceiling along the longitudinal 25/41 direction projecting in FIG. 5 by means of a plurality of hanging means 410.
    6 shows a lighting device 501 according to a sixth exemplary embodiment. The lighting device 501 has a lighting unit 502 and two profile-shaped carrier components 503, the lighting unit 502 being arranged between the two carrier components 503 and being fastened to the carrier components 503. The two support components 503 are designed as ceiling profile elements of a supporting structure for a grid ceiling (not shown in their entirety in FIG. 6) and run parallel to one another and, for example, essentially in the horizontal direction.
    The lighting unit 2, with the exception of the flat base part and devices on the base part side for fastening the lighting unit 502 to the carrier components 503, is designed in the same way as described for the above exemplary embodiments of the invention, so that reference can be made to the above statements relating to the lighting unit 2.
    Instead of the flat base part 31, as described in detail above, the lighting unit 502 has a flat base part 531. The base part 531 differs from the base part 31 of the lighting unit 2 in that the base part 531 has movable catches 597 instead of the magnets 53. Each of the catches 597 is guided in a catch housing 598 in such a way that the catch 597 can be displaced in the transverse direction Q. The catches 597 are each spring-loaded in such a way that, in the absence of external forces acting on the catches 597, the catches 597 protrude outward beyond opposite, lateral longitudinal edges 502a of the lighting unit 502. Each of the catches 597 can be pressed back into its associated catch housing 598 against a spring force.
    To attach the lighting unit 502 to the carrier components 503, the
    Lighting unit 502 in the direction of arrow P, see FIG. 6, between the carrier components
    503 used, wherein in each case a slide ramp 597a of the catch 597 comes into contact with one of the carrier components 503. This causes that if continued
    Introducing the lighting unit 502 between the carrier components 503, the snap fasteners 26/41 are pressed back into the snap fastener housing 598 by 597. After passing through a T-like expanded section of the carrier components 503, the snap
    Snap 597 behind the portion of the carrier components 503, thereby the
    Luminous unit 502 is securely positively attached to the carrier components 503.
    Snapper housing 598, each with a snapper 597 arranged therein, can be fastened to the flat base part 531 at intervals along the longitudinal direction of the lighting unit 502 projecting in FIG. 6. If, in the case of the lighting device 501 in FIG. 6, deformations of the carrier components 503 occur due to settling processes or otherwise, the lighting unit 502 can follow such a deformation due to the flexibility and flexibility already explained above. In this way, an aesthetically pleasing appearance of the lighting device 501 is maintained, non-flush transitions or the like are avoided, and any deformation-related force effects on the catch 597 can be reduced.
    It can also be seen from FIGS. 1-7 that each of the lighting devices 1, 101, 201, 301, 401, 501 is preferably substantially symmetrical with respect to a central plane that extends vertically and projecting in FIGS. 1-6. The cross sections of the carrier components 3, 103, 203, 303, 403, 503 and the cross sections of the profile element 17, the flat base parts 31 and 531, and the plastering profile 306 are each essentially constant along the longitudinal direction L thereof.
    All of the lighting arrangements 1, 101, 201, 301, 401, 501 described above with reference to FIGS. 1-7 are each formed with a comparatively large length along the respective longitudinal direction. In all of the exemplary embodiments described above, the resilient lighting unit 2 or 502 enables the lighting unit 2, 502 to be advantageously adapted to changes in the geometry of the carrier components 3, 103, 203, 303, 403 or 503, the changes in geometry in particular in the embodiments of FIGS. 4 and 6 can be traced back to settlement processes in a building and, in the case of FIG. 5, deformations of the carrier component 403 may be due, for example, to the weight forces acting over the length of the / 41 relatively long, suspended lighting device 401.
    In all the exemplary embodiments explained above, the lighting unit 2 or 502 is flush on the visible side S thereof with the carrier component 3, 103, 203, 303, 403 or the carrier components 503. Even with deformations of the respective carrier component (s), the clean, flush transition and thus the appealing appearance can be well maintained in the invention.
    It should be mentioned that, in the above exemplary embodiments, a plurality of lighting units 2 in the longitudinal direction L can be accommodated successively in the carrier component 3, 103, 203, 303 or 403, or a plurality of lighting units 502 in the longitudinal direction L can be fastened to the carrier components 503 in succession between them can. The lighting units 2, 502 can each have a comparatively large length in the longitudinal direction L, for example a length of up to approximately 3200 mm. However, lighting units 2, 502 with shorter lengths can be provided, for example about 600 mm long or about 1200 mm long or about 1800 mm long or about 2400 mm long. However, these lengths are to be understood as examples and other dimensions of the lighting units 2, 502 in the longitudinal direction L are conceivable.
    It should also be mentioned that the exemplary embodiments described above can also be used in connection with plate structures in the wall area.
    Although the present invention has been completely described above on the basis of preferred exemplary embodiments, it is not restricted to these but can be modified in a variety of ways.
    In particular, it is not absolutely necessary for the carrier component to run in a straight line along its longitudinal direction, as in the first to sixth exemplary embodiments, but the carrier component could, for example, be in one
    Follow the curved wall or ceiling level. A correspondingly curved course is also conceivable for the lighting unit.
    / 41
    Reference list
    Lighting device
    Light unit
    Carrier component
    teeth
    rail
    Plate element
    screw
    Recording area (support component) translucent profile element
    leg
    Bottom section
    Interior (profile element)
    Floor (interior)
    Light generating device flat base part
    Side margin (base part)
    opening
    head Start
    head Start
    Groove ferromagnetic element
    Groove
    Permanent magnet
    Fall protection
    End cover
    LED circuit board
    LED
    Edge (LED board)
    Light guide element
    Edge area (light guide element)
    Insulation element
    Edge area (insulation element) / 41
    Groove
    free space
    rib
    Connection device
    converter
    101 lighting device
    103 carrier component
    106 flange
    201 lighting device
    203 carrier component
    203a first section (carrier component)
    203b second section (carrier component)
    203c interior (first section)
    301 lighting device
    303 carrier component
    303a first section (carrier component)
    303b second section (carrier component)
    303c interior (first section)
    306 plaster profile
    306a leg (plaster profile)
    401 lighting device
    403 carrier component
    410 hangers
    501 lighting device
    502 light unit
    502a side longitudinal edge (light unit)
    503 carrier component
    531 flat base
    597 snapper / 41
    597a sliding ramp
    598 snap housing
    D thickness direction
    E level
    L longitudinal direction
    P arrow direction
    Q transverse direction
    S visible side t dimension in thickness direction (carrier component)
    V vertical direction / 41
    权利要求:
    Claims (22)
    [1]
    Claims
    1. Lighting device (1; 101; 201; 301; 401; 501), with a flat, elongated lighting unit (2; 502); and with a profile-shaped carrier component (3; 103; 203; 303; 403; 503);
    wherein the lighting unit (2; 502) is designed for fastening the same to the carrier component (3; 103; 203; 303; 403; 503);
    wherein the lighting unit (2; 502) has an at least partially transparent profile element (17) with an at least partially U-shaped cross-sectional shape, opposite legs (19) of the U-like cross-sectional shape essentially in the thickness direction (D) of the lighting unit (2; 502) extend, and through the U-like cross-sectional shape an inner region (23) of the profile element (17) is formed with an opening (37) formed between the legs (19);
    wherein the lighting unit (2; 502) further comprises a flat base part (31; 531) which is arranged in the region of the opening (37) and is coupled to the profile element (17);
    wherein the at least partially translucent profile element (17) is formed with a first material that offers less resistance to deformation than a second material with which the flat base part (31; 531) is formed; and a light generating device (29) for generating light which can be emitted during operation by the lighting unit (2; 502) is arranged in the inner region (23).
    [2]
    2. Lighting device according to claim 1, characterized in that an elastic modulus of the first material is less than an elastic modulus of the second material.
    [3]
    3. Lighting device according to claim 1 or 2, characterized in that the at least partially transparent profile element (17) as a profile made of the first material and the flat base part (31; 531) are formed as a profile made of the second material.
    32/41
    [4]
    4. Lighting device according to one of the preceding claims, characterized in that on the base part (31; 531) at least one base part-side device (53; 597, 598) for fastening the lighting unit (2; 502) on the carrier component (3; 103; 203 ; 303; 403; 503) is arranged.
    [5]
    5. Lighting device according to claim 4, characterized in that on the carrier component (3; 103; 203; 303; 403) at least one carrier component-side device (49) is arranged, which for fastening the lighting unit (2) to the carrier component (3; 103 ; 203; 303; 403) cooperates with the base part-side device (53).
    [6]
    6. Lighting device according to one of the preceding claims, characterized in that the lighting unit (2) by means of magnetic force on the carrier component (3; 103; 203; 303; 403) can be attached and / or that the lighting unit (502) by means of a snap (597 ) can be positively attached to the carrier component (503).
    [7]
    7. Lighting device according to one of the preceding claims, characterized in that the carrier component (3; 103; 203; 303; 403) for fastening the lighting unit (2) is provided with at least one ferromagnetic element (49), the ferromagnetic element ( 49) is preferably of sheet-like or strip-like design and in particular is held in a groove (47) in the carrier component (3; 103; 203; 303; 403) on the carrier component (3; 103; 203; 303; 403).
    [8]
    8. Lighting device according to one of the preceding claims, characterized in that the lighting unit (2) for fastening the lighting unit (2) has at least one magnet (53), in particular a permanent magnet, the magnet (53) preferably being strip-shaped and in particular is held in a groove (51) in the base part (31) on the base part (31).
    [9]
    9. Lighting device according to one of the preceding claims,
    33/41 characterized in that the light generating device (29) has at least one LED circuit board (61) which is arranged in the inner region (23) of the profile element (17) adjacent to one of the legs (19).
    [10]
    10. Lighting device according to claim 9, characterized in that the lighting unit (2; 502) has an insulation element (71) which is film-shaped or layered and is arranged on a side of the flat base part (31; 531) facing the inner region (23) to shield the base part (31; 531) from the LED circuit board (61) in an electrically insulating manner.
    [11]
    11. Lighting device according to claim 10, characterized in that the insulation element (71) in a direction (Q) transverse to the LED board (61) over an edge (63) of the LED board (61), wherein the LED - PCB (61) in particular extends transversely, preferably essentially perpendicular, to the insulation element (71).
    [12]
    12. Lighting device according to claim 10 or 11, characterized in that the insulation element (71) via a side edge (33) of the flat base part (31; 531) to the leg (19) adjacent to the LED board (61) of the U-like Cross-sectional shape survives.
    [13]
    13. Lighting device according to one of claims 10 to 12, characterized in that the insulation element (71) in an edge region (73) thereof extends into a groove (79) in the at least partially transparent profile element (17).
    [14]
    14. Lighting device according to one of the preceding claims, characterized in that in the inner region (23) a plate-shaped light guide element (67) is arranged substantially parallel to the flat base part (31; 531), the light generating device (29) for a lateral light feed in the light guide element (67) is arranged adjacent to an edge region (68) of the light guide element (67).
    34/41
    [15]
    15. Lighting device according to claim 14, characterized in that the lighting unit (2; 502) has a reflector (71) between the flat base part (31; 531) and the light guide element (67).
    [16]
    16. Lighting device according to claim 14 in conjunction with claim 10, characterized in that the insulation element (71) between the flat base part (31; 531) and the light guide element (67) is arranged and formed as a reflector and / or with a light-reflecting component , in particular a light-reflecting layer or coating.
    [17]
    17. Lighting device according to one of the preceding claims, characterized in that the at least partially translucent profile element (17) is made of a plastic material as the first material.
    [18]
    18. Lighting device according to one of the preceding claims, characterized in that the flat base part (31) is designed as a base profile made of a metal material as the second material.
    [19]
    19. Lighting device according to one of the preceding claims, characterized in that the carrier component (3; 103; 203; 303; 403; 503) is designed as a carrier profile made of a metal material.
    [20]
    20. Lighting device according to one of the preceding claims, characterized in that the lighting unit (2) in such a way in the carrier component (3; 103; 203; 303; 403) receivable and / or on the carrier component (3; 103; 203; 303; 403 ; 503) can be fastened such that the lighting unit (2) is essentially flush with the support component (3; 103; 203; 303; 403; 503) on one visible side (S) of the lighting unit (2).
    [21]
    21. Lighting device according to one of the preceding claims,
    35/41, characterized in that the carrier component (3; 103; 203; 303; 503) is designed to be fixedly mounted on a structure or a structure (5) attached to a structure, or in that the carrier component (403) is set up for this is on a building or on a
    Structure attached structure to be attached hanging.
    [22]
    22. Lighting unit (2; 502), in particular for a lighting device (1; 101; 201; 301; 401; 501) according to one of the preceding claims, wherein the lighting unit (2; 502) is flat and elongated and for fastening the same a profile-shaped carrier component (3; 103; 203; 303; 403; 503) is set up;
    wherein the lighting unit (2; 502) has an at least partially transparent profile element (17) with an at least partially U-shaped cross-sectional shape, opposite legs (19) of the U-like cross-sectional shape essentially in the thickness direction (D) of the lighting unit (2; 502) extend, and through the U-like cross-sectional shape an inner region (23) of the profile element (17) is formed with an opening (37) formed between the legs (19);
    wherein the lighting unit (2; 502) further comprises a flat base part (31; 531) which is arranged in the region of the opening (37) and is coupled to the profile element (17);
    wherein the at least partially translucent profile element (17) is formed with a first material that offers less resistance to deformation than a second material with which the flat base part (31) is formed; and a light generating device (29) for generating light which can be emitted during operation by the lighting unit (2; 502) is arranged in the inner region (23).
    36/41
    37/41
    38/41
    1 / c
    0/0
    39/41 ί t τ /
    40/41
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    同族专利:
    公开号 | 公开日
    PL3315848T3|2020-03-31|
    EP3315848A1|2018-05-02|
    EP3315848B1|2019-08-07|
    DE102016221257A1|2018-05-03|
    US10330269B2|2019-06-25|
    US20180119906A1|2018-05-03|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102016221257.5A|DE102016221257A1|2016-10-28|2016-10-28|Lighting device and light unit|
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