• 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:
    An optical blank according to the invention for providing an optical system (7) for a linear light comprises an elongated transparent cover sheet (1) with two essentially parallel longitudinal edges (3), two fastening edges (2), each running along one of the longitudinal edges (3), and two Hinge structures (4), each connecting one of the fastening edges (2) to one of the longitudinal edges (3) of the cover sheet (1). The cover sheet (1) is designed to shape light generated by a lamp of the linear lamp when it covers the lamp in the direction of radiation. The fastening edges (2) protrude from the cover sheet (1) at a basic angle α if the cover sheet (1) is arranged virtually flat and no forces act on the attachment edges. The fastening edges (2) are shaped in such a way that they can be mounted on an element (6) of the linear light in the case of an optical system (7) made from the optical blank such that the covering path (1) covers the illuminant of the linear light. The hinge structures (4) are designed so that angles between the cover sheet (1) and the fastening edges (2) can be changed so that they differ from the basic angle α. The invention also relates to a linear light and an optical system.
    公开号:CH715292A1
    申请号:CH01040/18
    申请日:2018-08-29
    公开日:2020-03-13
    发明作者:Mayer Erwin
    申请人:Regent Beleuchtungskoerper Ag；
    IPC主号:
    专利说明:

    Technical field
    The invention relates to an optical blank for providing an optical system for a linear lamp according to the preamble of independent claim 1. Furthermore, the invention relates to an optical system for covering a lamp in a linear lamp and a linear lamp with such an optical system.
    State of the art
    Linear lights are elongated lights, as they are often used today to illuminate indoor and outdoor spaces. Typically, linear lights extend along a room or object on which they are arranged and emit light over a length in contrast to a point-shaped light emission. For example, they can be attached or attached directly to walls or ceilings. However, they can also be suspended from a surface.
    Linear lights usually have longitudinal illuminants or a series of point-like illuminants. Linear lights are used in linear lights to design and shape the light output, which are used, for example, as diffusers or reflectors. It is known to provide optics with cover plates and side edges for attachment to the linear light. The cover plates are advantageously designed in terms of lighting technology, for example as diffuser surfaces. The side edges are optimized for fastening the optics in the luminaire, so that the optics can be stored in the luminaire according to the desired lighting design.
    From WO 2013/102 640 A1, for example, a luminaire with a rod-shaped illuminant is known that is accommodated in a housing and covered by an optical system. The optics is designed as an elongated component, which has a cover plate and side walls protruding from its longitudinal edges. The optics can be fastened in the housing with the side walls, so that the base is arranged below the illuminant and forms the light emitted by it. The optic is a rigid extruded component that is pressed with its side walls between the inner walls of the housing. For this purpose, the housing and optics must be perfectly matched so that the housing and optics cannot be used for other types of luminaires. The side walls can be slightly deflected to force them into the press fit in the housing. However, the rigid press fit between the housing and the optics complicates the assembly and maintenance of the lamp. Furthermore, such optics are long and bulky and can be transported and stored only with great difficulty.
    [0005] WO 2014/174 019 A1 therefore proposes an optic in which a cover plate made of a hard material with advantageous optical properties and side profiles projecting therefrom are made of a more flexible material. The side profiles are made of a thermoplastic elastomer, so that they are flexibly molded onto the cover plate and are easily movable or deformable for assembly and disassembly. In order to nevertheless achieve sufficient stiffness of the profile for a secure fit of the optics in the housing, the profile is constructed from a plurality of adjoining longitudinal legs, which must be preloaded with respect to one another. The individual legs of the side profiles are therefore rather short and a width / thickness ratio is selected such that the pretension can be achieved in order to press-fit the housing. If the width of the profile legs is increased, for example, to protrude further into the housing and to allow a better fit, the tension of the side profiles is reduced due to the flexible material. The mounting area of the optics in the housing is therefore limited to a narrow area and only small holding forces can be generated. In addition, a two-material construction of the optics is complex to manufacture.
    The present invention is therefore based on the object to propose an optics or a blank for optics that enable advantageous optical properties for lighting design in a lamp and at the same time a reliable installation in a lamp that is easy to use during assembly and Allow maintenance of the luminaire, can be stored and transported to save space and are efficient and inexpensive to manufacture.
    Presentation of the invention
    The object is achieved by an optical blank as defined in independent claim 1. Furthermore, the object is achieved by an optic produced from such a blank and by a linear light with such an optic according to claims 13 and 15. Advantageous embodiments of the invention result from the dependent claims.
    In one aspect, the invention relates to an optical blank for providing or producing an optical system for a linear light. It comprises an elongated, transparent cover sheet with two substantially parallel longitudinal edges and two fastening edges, each of which runs along one of the longitudinal edges. The cover sheet is designed to form light generated by a lamp of the linear lamp when it covers the lamp in the direction of radiation. The fastening edges each protrude from the cover sheet at a basic angle if the cover sheet is arranged virtually flat and no forces act on the attachment edges or the cover sheet. The fastening edges are shaped in such a way that they can be mounted on an element of the linear light in the case of an optic produced from the optical blank such that the covering path covers the illuminant of the linear light. The optical blank has two hinge structures, each of which connects one of the fastening edges to one of the side edges of the cover sheet. The hinge structures are designed so that angles between the cover sheet and the fastening edges can be changed, in particular can be changed differently from the basic angle.
    The optical blank can have any length and can be manufactured, for example, by the meter. To produce an optic for a linear light with given dimensions, a part can be separated from the optic blank in a length that corresponds to the length of the optics required for the light. As an alternative to this, the optics blank can also be prefabricated in a desired length so that it can be used directly as optics. For example, the optics blank can be reshaped for efficient transport and in particular can be bent or rolled and then used at the destination without cutting or cutting being necessary. If the fastening edges are pressed in one plane with the cover sheet, the optical blank as a whole forms a flat, elongated structure that can be rolled up. The optical blank can therefore be rolled up, which can facilitate storage and transport, for example. In addition, the fastening edges can be designed to be comparatively rigid and can be provided with the length required for securely fastening an optical system in a linear light. It is thus possible for the fastening edges to protrude sufficiently into the interior of a lamp and for a reliable fastening connection to be made with an element of the lamp.
    The term “shapes” in connection with the light emitted by the illuminant of the linear lamp is understood here to mean a change in the light properties of the emitted light. For example, such shaping can include scattering or attenuating the light of the illuminant, so that a light emitted by the linear lamp can be adapted to a desired lighting. The nature of the cover sheet allows the light to be shaped in such a way that a desired light distribution curve (LVK) is achieved. For this purpose, the cover sheet can, for example, absorb, deflect or scatter the light incident from the illuminant. An optics manufactured from the optics blank can be designed, for example, as a diffuser.
    The term «longitudinally» can refer in connection with the cover sheet and the linear light to a linear, quasi-linear or even curved elongated shape in one plane. The longitudinal extent is in any case greater than the extent in width. Typically, the width is also significantly greater than the thickness of the cover sheet.
    [0012] The term “transparent” in connection with the cover sheet can refer to translucent or at least partially translucent for visible light or portions of visible light. The term “translucent” can refer in particular to a damped or undamped permeability of the light generated by the illuminant. The light transmittance of the cover sheet can be selected according to a desired lighting or a predetermined light distribution curve and can be achieved by designing the cover sheet with corresponding optical properties.
    [0013] The cover sheet of the optical blank can be an essentially slat-like elongated structure which is quasi flat without the application of force. For example, it can have a rectangular base area that is many times longer than it is wide and flat. In connection with the cover sheet, the term “flat” is understood to mean a straight or unbent alignment that runs in a geometric plane. If the cover sheet is arranged flat, it is straight in a side view or in a longitudinal section and its longitudinal edges also run straight, so that the cover sheet forms a type of cover plate. It should not be excluded that the cover sheet has one or more curvatures or angled structures inwards or outwards between its longitudinal edges. In cross-section, the cover sheet between the flat longitudinal edges can therefore have a configuration corresponding to the desired optical properties of the cover sheet. For example, it can have convex or concave surfaces or microstructures.
    The mounting edges form a type of mounting surface or flank, which cooperates with an element of the linear lamp for attaching the optics to the lamp. The fastening edges can be shaped in a profiled manner or can each be designed as a fastening profile or can be provided with a fastening profile. For this purpose, they can have structures that enable a suitable connection with the element of the linear light. The element of the linear light for mounting the optics can be, for example, a housing wall or another component of the light that is suitable for arranging and holding the cover path of the optics in front of the light source of the light. For example, these structures or profile structures can be provided with projections, shoulders or grooves which allow them to be hooked in, engaged or gripped behind in corresponding units of the linear light.
    The hinge structures between cover sheet and mounting edges are designed such that the mounting edges protrude to one side from the cover sheet in the basic angle, provided the cover sheet is aligned and no forces act on the cover sheet or the mounting edges. The fastening edges preferably protrude from one side of the cover sheet, which can be referred to as the inside, since after the optics have been installed they come to lie inside the linear light and form a light incidence surface for the light from the illuminant. Accordingly, the opposite side of the cover sheet can be referred to as the outside, which forms a light exit surface of the optics.
    The base angle can be defined, for example, as the angle between a surface of the inside of the cover sheet and a fastening edge, or a base plane of the flank of the fastening edge or an orientation of the fastening edge. The profile structures of the fastening edge can even be angled to this base plane. If the fastening edges protrude at right angles from a cover sheet that has just been laid out, for example, the basic angle is a 90 ° angle. If the free ends of the fastening edges protrude from each other and project outwards beyond the longitudinal edges of the cover sheet, the basic angle is greater than 90 °. If the ends of the fastening edges protrude towards each other and stand above the inner surface of the cover sheet, the basic angle is less than 90 °.
    If the fastening edges assume a basic angle to the cover sheet, the hinge structures are in a basic state, that is to say in a state in which the hinge structures have sufficient intrinsic holding ability, for example due to their design, shape and / or material properties, around the fastening edges in the basic angle to keep. When a force is exerted on the fastening edges or the hinge structures, however, the fastening edges can be deflected from the basic angle.
    The base angle is advantageously greater than 90 °, so that the fastening edges protrude outward from the cover sheet. When assembling an optic from such an optic blank, the free ends of the fastening edges can then be pressed towards one another, for example, in order to be inserted into or attached to an element of a linear light. The prestress in the hinge structures generated by the indentation can serve, for example, to hold the optics in the lamp, in particular to fasten the profile structures to a lamp element.
    [0019] The basic angle is preferably in a range from approximately 125 ° to approximately 145 ° or in a range from approximately 130 ° to approximately 140 °. The base angle is particularly preferably approximately 135 °. If an optic made from the optic blank is mounted in a linear light, the fastening edges preferably assume a smaller angle than the basic angle. This angle can be referred to as the mounting angle. The hinge structures are therefore advantageously designed in such a way that the angles between the cover sheet and the fastening edges can be reduced in such a way that when the optics produced from the optics blank are mounted on the element of the linear light they are each changed to an assembly angle that is smaller than the basic angle. The mounting angle is preferably in a range from approximately 80 ° to approximately 100 ° or in a range from approximately 85 ° to approximately 95 °. The mounting angle is particularly preferably approximately 90 °. Furthermore, the hinge structures can advantageously be designed so that a force pushing the fastening edges in the direction of the basic angle acts when the fastening edges lie at the mounting angle to the cover sheet. Such a biasing force supports the attachment of optics in the linear lamp.
    Since, according to the invention, the hinge structures enable a change in the angle between the fastening edges and the cover sheet, the attachment edges can be folded in and out to the cover sheet.
    This enables the optics blank to be rolled up in a space-saving manner by the attachment edges preferably being folded outwards so that they lie essentially parallel or in one plane to the cover sheet, and the entire optics blank can be bent in its longitudinal direction. Such a fold-out of the fastening edges allows the optical blank to bend more than when the fastening edges are folded in or protrude from the cover sheet at an angle. As a result, the optical blank can be produced in a comparatively long version or quasi endlessly and can be distributed or processed efficiently. This significantly simplifies the logistics in the manufacture of optics or associated linear lights. For example, such an optical blank can be rolled up in a quasi endless or very long version and delivered to a luminaire manufacturer in a space-saving and efficient manner. This unwinds the optics blank and cuts it to the desired length, so that a look that matches the linear light is created. If the optics blank already has the right cut or length, it can also be used as an optic immediately after unwinding.
    [0022] In addition, the hinge structures according to the invention enable the fastening edges to be relatively stiff and large or high. This can be advantageous in many linear luminaires in which the optics have to engage comparatively far into the interior of a luminaire. The mobility of the fastening edges is predetermined by the hinge structures, so that the fastening edges themselves can be rigid or stiff in comparison.
    In one embodiment of the optical blank, the hinge structures are designed so that the angles between the fastening edges and the cover sheet increase automatically when the cover sheet is bent. This can be achieved, for example, by the fastening edges projecting away from one another from the cover sheet or the base angle being greater than 90 °. This can also be achieved by the hinge structures having a gradient in the material structure, for example by means of a suitable shape and / or changed density.
    Preferably, the hinge structures are designed such that the angles between the fastening edges and the cover sheet are automatically or approximately up to in a range from approximately 170 ° to approximately 190 ° or in a range from approximately 175 ° to approximately 185 ° Increase the maximum angle of 180 ° when the cover sheet is bent.
    [0025] In a further embodiment, the optical blank is formed in one piece. Accordingly, the cover sheet, the fastening edges and the hinge structures are not provided as individual components that are assembled to form the optical blank. Rather, they are formed by the shape of the optical blank as well as the choice of material and / or the material properties for designing the cover sheet, fastening edges and hinge structures. The cover sheet and the fastening edges are advantageously made of an identical material. The hinge structures can also consist of the same material. To design the hinge structures according to the invention, this material for the hinge structures, in contrast to the cover sheet and fastening edges, can have different properties, for example a different density. However, that of the cover sheet, fastening edges and hinge structures can also be identical. The hinge structures can be designed according to the invention by the shape as a connection between the cover sheet and fastening edges. Mixed forms of material choice or properties and shape can also be realized in the hinge structures.
    In a variant of an optical blank according to the present invention, it is made exclusively from polymethyl methacrylate (PMMA) or exclusively from polycarbonate (PC). Optics made of plastics, in particular of PC or PMMA, on the one hand enable the optics to be designed robustly in many possible geometries. On the other hand, they can be translucent in a variety of ways, so that the desired radiation characteristic can be predefined flexibly and adapted to the intended use. In addition, optics can be produced from such a material in a relatively simple and cost-effective manner, for example by extrusion or by injection molding, and have other properties which are preferred for use, such as, for example, elasticity or durability.
    In an advantageous embodiment, the optical blank is produced in an extrusion process, the hinge structures being produced in a separate step under conditions which differ from the conditions in the production of the cover sheet and the fastening edges. For example, different processing or cooling temperatures can be used in the manufacture of the different areas of the optical blank. As a result, the material properties of the hinge structures can differ from the material properties of the cover sheet and the fastening edges, although they are produced from the same material. In particular, the material flexibility and / or elasticity can be different.
    In one embodiment of the optical blank according to the invention, the hinge structures are shaped in a specific geometry, in particular a specific geometry in the cross section of the hinge structures. This specific geometry determines the shape of the optical blank in the area of the hinge structures. The geometry or shape is matched to the material of the hinge structures and / or the design of the cover sheet and fastening edges in such a way that they can serve as a joint between the cover sheet and fastening edges. For example, a thickness and a length of the hinge structures are matched to the compression properties of the material or adapted to the length of the fastening edges, which determines the leverage that can be exerted on the hinge structures by the fastening edges. For example, the geometry of the hinge structures can have miter cuts, tapering or thin points in order to enable the hinge structures to function.
    [0029] The optical blank can be mirror-symmetrical along a longitudinal axis. A symmetrical shape can be advantageous in particular in versions in which asymmetrical light shaping is not desired, but rather, for example, a general or non-specific scatter or insulation is to be generated. Handling can be simplified with a symmetrical design, since it is not necessary to pay attention to how the optics blank is used as optics. Alternatively, the optical blank can also be asymmetrical for light shaping purposes.
    In another aspect, the invention relates to an optic from an optic blank as described above. To provide the optics for covering a lamp in a linear lamp, so that light generated by the lamp of the linear lamp is shaped by the optics, the optics blank is cut to a length suitable for the linear lamp. In principle, several optics can also be provided that are to be used in the same linear light. For example, individual longitudinal segments, which for example have different illuminants, can each be provided with their own optics. The optics can then be removed individually, for example, for maintenance of the linear light. The optics required for the individual longitudinal segments can simply be cut to length from the optics blank.
    In a further other aspect, the invention relates to a linear lamp with at least one lamp, a housing profile and an optics mounted on an element of the housing profile, which is made from an optics blank, as shown above. If the optics are mounted on the housing profile, they cover the illuminant and the angles between the mounting edges and the cover strip of the optics are reduced relative to the basic angle, whereby they are available at an installation angle. The mounting edges of the optics interact with one or more elements of the housing profile to hold the optics in or on the linear light. The hinge structures in the mounting angle preferably generate a holding force as a result of the deflection of the fastening edges from the basic angle, which holds the optics in or on the linear light, or holds the profile structures of the fastening edges on the elements of the housing profile. In this case, an inner surface of the cover sheet comes to lie opposite the illuminant and an outer surface of the cover sheet forms the light exit surface, the light being shaped as it passes through the cover sheet.
    The optics can cover the lamp in particular in a radiation direction, so that lighting properties of the lamp can be adjusted and this can be protected. Ideally, the optics completely cover the illuminant in all of its radiation directions. The light of the illuminant is shaped via the optics in such a way that the radiation characteristics of the linear lamp are influenced and a light distribution curve of the linear lamp can be defined.
    The illuminant of the linear lamp can in particular have a large number of light-emitting diodes and can therefore be referred to as an LED illuminant. LED lamps have various advantageous properties such as high energy efficiency, long life and cost-effective production. They enable efficient lighting that is adapted to the respective application.
    The term “light-emitting diode” can be understood as synonymous with light-emitting diode or light-emitting diode (LED). The light-emitting diodes can, for example, be round, elliptical, square or rectangular in a top view. They can be attached to a circuit board, which can also be equipped with control electronics for operating the light-emitting diodes.
    In this context, the term “circuit board” can refer to a printed circuit board (printed circuit board, PCB), which is a carrier for electronic components. In general, circuit boards are used for mechanical fastening and electrical connection of electronic components. Printed circuit boards or printed circuit boards usually consist of an electrically insulating material with conductive connections (conductor tracks) adhering to it. Fiber-reinforced plastic is common as an insulating material. The conductor tracks are mostly etched from a thin layer of copper. The components are soldered on soldering pads (pads) or in pads. Larger components can also be attached to the board with cable ties, adhesive or screw connections.
    Brief description of the drawings
    Further advantageous embodiments of the invention result from the following description of an embodiment of the invention with the aid of the schematic drawing. In particular, the optics blank according to the invention or the optics according to the invention or the linear light according to the invention is described in more detail below with reference to the accompanying drawings using exemplary embodiments. Show it:<tb> Fig. 1 <SEP> a cross section through an optical blank according to the present invention with cover sheet and fastening edges at a basic angle,<tb> Fig. 2 <SEP> a cross section through the optics blank in an opened state for rolling up the optics blank and<tb> Fig. 3 <SEP> shows a cross section of a schematic illustration of an optical system according to the present invention in a housing profile of a linear lamp with cover sheet and fastening edges in a mounting bracket.
    Way (s) of carrying out the invention
    [0037] Certain terms are used in the following description for practical reasons and are not to be taken in a limiting sense. The terms “inside”, “outside”, “below”, “above”, “left”, “right” or similar are used to describe the arrangement of designated parts relative to one another, the movement of designated parts relative to one another and the directions towards or away from an axis of symmetry the invention and named parts thereof used as shown in the figures. This spatial relative information also includes different positions and orientations than those shown in the figures.
    In order to avoid repetitions in the figures and the associated description of the various aspects and exemplary embodiments, certain features are to be understood as common for different aspects and exemplary embodiments. The omission of an aspect in the description or a figure does not imply that this aspect is missing in the associated exemplary embodiment. Rather, such omission can help clarity and prevent repetition. If reference numerals are included in a figure for the sake of clarity in the drawing, but are not mentioned in the directly associated description text, reference is made to their explanation in the preceding description of the figures. If, in the description text belonging directly to a figure, reference symbols are also mentioned which are not contained in the associated figure, reference is made to the preceding and following figures. Similar reference numerals in two or more figures stand for similar or identical elements.
    1 shows a cross section through an exemplary embodiment of an optical blank according to the present invention. The optical blank includes a cover sheet 1 and fastening edges 2. The cover sheet 1 is designed as an elongated flat plate and has optical properties which are suitable for shaping a light incident on one side in a predetermined manner and emitting it again on an opposite side. For this purpose, the cover sheet is at least partially transparent. In FIG. 1, the light incidence side corresponds to the upper side and the light emission side corresponds to the lower side of the cover sheet 1. The fastening edges 2 are attached along opposite longitudinal edges 3 of the cover sheet 1. The cover sheet 1 and the fastening edges 2 are connected to one another by hinge structures 4. The fastening edges 2 form flanks along a plane E and run over the length of the cover sheet 1. The optical blank is formed symmetrically about an axis of symmetry S. The fastening edges 2 protrude at least approximately in the same mirror symmetry from the cover sheet 1.
    In Fig. 1, the mounting edges 2 are at a basic angle α from the cover sheet and assume a basic position. The basic angle α is defined as the angle between the light incidence side of the cover sheet 1 and the plane E of a fastening edge 2. If the cover sheet 1 is arranged virtually flat and no forces act on the fastening edges 2, the fastening edges 2 assume the basic position with the basic angle α. In the embodiment of the optical blank of FIG. 1, the basic angle is 135 °. The free ends of the fastening edges 2 thus project outward from the cover sheet 1. The basic angle α can also be chosen to be larger or smaller.
    In the embodiment shown, cover sheet 1, mounting edges 2 and hinge structures 4 are made of the same material. However, the hinge structures 4 are designed so that the angle between the cover sheet 1 and the fastening edges 2 can be changed such that it is different from the basic angle α. The mounting edges 2 can thus be deflected from the basic position. The angle can be increased, for example if the fastening edges are bent further apart, or reduced if, for example, the free ends of the fastening edges 2 are bent towards one another. The hinge structures 4 have a material quality and / or shape that provide sufficient holding force for the fastening edges 2 to remain in the basic angle α without the application of force.
    As a common material for the cover sheet, the mounting edges and the hinge structures, a plastic is preferably used, in particular PMMA or PC can be used. In the area of the hinge structures 4, the material is processed such that it is elastic and / or flexible in order to allow the fastening edges 2 to be deflected from the basic angle α. The design of the hinge structures 4 enables sufficient intrinsic prestressing that the fastening edges 2 are held in the basic position. In contrast to the hinge structures 4, the cover sheet 1 and the fastening edges 2 are made less flexible and have sufficient rigidity so that the fastening edges can serve as a holding structure and the cover sheet 1 as an optical element. The optical blank is advantageously made in one piece. For this purpose, an injection molding process is used, for example, which produces the cover sheet 1 and the fastening edges 2 and the hinge structures 4 in different manufacturing steps in order to achieve different material properties for the hinge structures 4.
    The fastening edges 2 have a fastening profile 5 on their outwardly facing side, that is to say on the side facing away from the opposite fastening edge. In the embodiment shown, the fastening profile 5 comprises two mutually spaced shoulders 5a and 5b. An exemplary embodiment of an optical system according to the invention produced from the optical blank can be mounted with the fastening profile 5 on an element 6 of an exemplary embodiment of a linear lamp according to the invention, as is explained in more detail in FIG. 3.
    2, the optical blank is shown in a flat position in which it can be bent and rolled up in the longitudinal direction. The optical blank can be made in any length. By rolling it up, for example for transport or storage, the optical blank is nevertheless available in a practical and manageable size. For this purpose, the hinge structures are designed to be able to assume a flat angle β between the cover sheet 1 and the plane E of the fastening edges 2 in a range from approximately 170 ° to approximately 190 ° or in a range from approximately 175 ° to approximately 185 °. In the embodiment shown, the angle β is approximately 180 °.
    The hinge structures 4 of the optical blank are advantageously designed such that the angles between the fastening edges 2 and the cover sheet 1 automatically increase to the flat angle β when the cover sheet 1 is bent. The automatic bending results from a geometry or material distribution of the hinge structures 4 that is suitable for this purpose and is supported by the fastening edges 2 that are already pointing outwards. When the cover sheet 1 is bent, the fastening edges 2 are opened further and bent together with the cover sheet 1 in the longitudinal direction.
    In Fig. 3 is cut from a previously described optics blank optics 7 is shown, which is inserted into a housing profile 8 of a linear lamp. For this purpose, the angles between the cover sheet 1 and the fastening edges 2 are reduced such that they each include an assembly angle μ for mounting the optics 7 on the linear light, which is smaller than the basic angle α. The mounting angle μ is advantageously in a range from approximately 80 ° to approximately 100 ° or in a range from approximately 85 ° to approximately 95 °. In the embodiment of the optics 7 shown, the mounting angle μ is 90 °.
    For assembly, the mounting edges 2 inwards, i. H. pressed towards each other so that they can be inserted between opposite housing walls 9 until the fastening profile 5 or its profile shoulders 5a and 5b engage in the elements 6 of the housing profile 8. The shoulders 5a and 5b encompass the elements 6 and fix the optics 7 to the housing profile 8. The hinge structures 4 are advantageously designed in such a way that a force pushing the fastening edges 2 in the direction of the basic angle acts when the fastening edges lie at the mounting angle μ to the cover sheet 1. This force can be given by the pretensioning force that results from the compression of the fastening edges 2 and the tensioning force of the hinge structures 4. It can have a supporting effect in order to keep the fastening profile 5 in engagement with the housing profile 8. In principle, however, this is not absolutely necessary if the fastening profile 5 and housing profile 8 provide sufficient fastening when they work together.
    In the mounting position of the optics 7, the cover sheet 1 covers the downwardly open housing profile 8 of the linear lamp. Above the optics 7, a lamp is provided in the housing profile 8, which is not shown in the figures in order to ensure the clarity of the invention. The illuminant can be held, for example, by further profile elements 10. The fastening edges 2 advantageously form a space between them in which the illuminant can come to rest, so that the fastening edges 2 enclose the illuminant laterally. The inner sides of the fastening edges 2 are preferably designed to be reflective, so that light emitted to the side by the illuminant is reflected in the direction of the cover sheet 1. The fastening edges 2 can, for example, be made of opal PMMA. The light of the illuminant enters the cover sheet 1 on the inside, is formed in the cover sheet in a predetermined manner and exits the outside with a desired light distribution curve on the outside of the cover sheet. The cover sheet 1 can for example be made of transparent and opal matt PMMA and act as a diffuser.
    The length of the cover sheet 1 of the optics 7 is selected in accordance with the length of the linear light and separated from the optics blank. The width of the optics is chosen in accordance with the width of the linear light in order to cover the profile housing or the illuminant on the lower side of the linear light. In the embodiment shown, the width is approximately 50-60 mm and a thickness is approximately 1-2 mm.
    The mounting edges 2 have a sufficient width to protrude with their predominant part in the housing profile 8 of the linear lamp and can be used for attachment. For a secure hold of the optics, two profile shoulders 5a and 5b are selected as the attachment point in the embodiment shown. The points of attack are approximately 8–12 mm apart. For this purpose, the fastening edges 2 have a width of approximately 12-18 mm. The hinge structures 4 are designed, for example, with a width of 1-3 mm.The design and dimensioning of the hinge structures 4 is matched to the fastening profile of the optics 7 and the luminaire housing. The higher rigidity of the fastening edges 2 compared to the hinge structures 4 ensures that the profile shoulders engage securely in the housing profile, while the lower rigidity of the hinge structures 4 enables simple assembly.
    In the embodiment of an optical blank, an optical system and a linear light according to the invention described in Figures 1 to 3, a mounting profile 5 of the mounting edges 2 on the outside of the mounting edges 2 and an element 6 of a housing profile 8 on an inner housing wall 9 are provided . In principle, however, it is also conceivable in the sense of the invention to arrange in a mechanical reversal of action, so that fastening profiles of the optics are provided on an inside of the fastening edges and linear light elements on outwardly facing walls of the housing profile. It is essential that the fastening edges have sufficient rigidity and a suitable profile for secure fastening and that the hinge structures can be deflected from a basic angle for assembly.
    Although the invention is illustrated and described in detail by means of the figures and the associated description, this illustration and this detailed description are to be understood as illustrative and exemplary and are not restrictive of the invention. In order not to clarify the invention, well-known structures and techniques cannot be shown and described in detail, such as in the linear light shown in FIG. 3. It is understood that those skilled in the art can make changes and modifications without departing from the scope of the following claims. In particular, the present invention covers further exemplary embodiments with combinations of features that may differ from the combinations of features explicitly described.
    [0053] The present disclosure also includes embodiments with any combination of features mentioned or shown above or below for various embodiments. It also includes individual features in the figures, even if they are shown there in connection with other features and / or are not mentioned above or below. The alternatives of embodiments and individual alternatives whose characteristics described in the figures and the description can be excluded from the subject matter of the invention or from the disclosed objects. The disclosure includes embodiments that only include the features described in the claims or in the exemplary embodiments and also those that include additional other features. Furthermore, the expression “comprise” and derivatives thereof do not exclude other elements or steps. Likewise, the indefinite article "a" or "one" and derivatives thereof do not exclude a large number. The functions of several features listed in the claims can be fulfilled by a unit or a step. The terms “essentially”, “about”, “quasi” and the like in connection with a property or a value also define precisely the property or exactly the value. The term “about” in connection with a given numerical value or range can refer to a value or range which lies within 20%, within 10%, within 5% or within 2% of the given value or range. All reference signs in the claims are not to be understood as limiting the scope of the claims.
    List of reference symbols<tb> 1 <SEP> cover sheet<tb> 2 <SEP> mounting edges<tb> 3 <SEP> long edges<tb> 4 <SEP> hinge structures<tb> 5 <SEP> fastening profile<tb> 5a <SEP> profile heel<tb> 5b <SEP> profile heel<tb> 6 <SEP> element<tb> 7 <SEP> optics<tb> 8 <SEP> housing profile<tb> 9 <SEP> housing wall<tb> 10 <SEP> profile element<tb> α <SEP> basic angle<tb> β <SEP> flat angle<tb> µ <SEP> mounting bracket<tb> E <SEP> level mounting edge<tb> S <SEP> symmetry axis optical blank
    权利要求:
    Claims (15)
    [1]
    1. Optical blank for providing an optical system (7) for a linear lamp, comprising:an elongate transparent cover sheet (1) which is designed to form light generated by a lamp of the linear lamp when it covers the lamp in the direction of radiation, the cover sheet (1) having two substantially parallel longitudinal edges (3), andtwo fastening edges (2), each running along one of the longitudinal edges (3) and protruding from the cover sheet (1) at a basic angle (α) if the cover sheet (1) is arranged virtually flat and no forces are exerted on the attachment edges (2) act, the fastening edges (2) being shaped such that they can be mounted on an element (6) of the linear light in the case of an optical system (7) made from the optical blank such that the cover sheet (1) covers the illuminant of the linear light,characterized by two hinge structures (4), each connecting one of the fastening edges (2) to one of the longitudinal edges (3) of the cover sheet (1), the hinge structures (4) being designed so that angles between the cover sheet (1) and the Fastening edges (2) can be changed so that they are different from the basic angle (α).
    [2]
    2. Optical blank according to claim 1, wherein the basic angle (α) is in a range from approximately 35 ° to approximately 55 ° or in a range from approximately 40 ° to approximately 50 ° or is approximately 45 °.
    [3]
    3. Optical blank according to claim 1 or 2, wherein the hinge structures (4) are designed so that the angle between the fastening edges (2) and the cover sheet (1) automatically increase when the cover sheet (1) is bent.
    [4]
    4. Optical blank according to claim 3, wherein the hinge structures (4) are designed so that the angles between the fastening edges (2) and the cover sheet (1) automatically up to in a range of about 170 ° to about 190 ° or in enlarge a range of approximately 175 ° to approximately 185 ° or approximately 180 ° maximum angle when the cover sheet (1) is bent.
    [5]
    5. Optical blank according to one of the preceding claims, wherein the hinge structures (4) are designed so that the angles between the cover sheet (1) and the fastening edges (2) can be reduced so that they are during assembly of the optics produced from the optical blank ( 7) on the element (6) of the linear light can be changed to a mounting angle (µ) that is smaller than the basic angle (α).
    [6]
    6. Optical blank according to claim 5, wherein the hinge structures are designed so that a force acting on the fastening edges in the direction of the basic angle (α) acts when the fastening edges lie at the mounting angle (µ) to the cover sheet.
    [7]
    7. Optical blank according to claim 5 or 6, wherein the mounting angle (µ) is in a range from approximately 80 ° to approximately 100 ° or in a range from approximately 85 ° to approximately 95 ° or is approximately 90 °.
    [8]
    8. Optical blank according to one of the preceding claims, which is formed in one piece.
    [9]
    9. Optical blank according to one of the preceding claims, wherein the cover sheet (1) and the fastening edges (2) are made of an identical material.
    [10]
    10. Optical blank according to one of the preceding claims, which is made exclusively from polymethyl methacrylate or exclusively from polycarbonate.
    [11]
    11. Optical blank according to claim 9 or 10, which is produced in an extrusion process, wherein the hinge structures (4) are produced in a separate step under conditions which deviate from the conditions in the production of the cover sheet (1) and the fastening edges (2) .
    [12]
    12. Optical blank according to one of the preceding claims, in which the hinge structures (4) are shaped by a specific geometry.
    [13]
    13. Optics (7) for covering an illuminant in a linear lamp, so that light generated by the illuminant of the linear lamp is shaped by the optics (7), the optics (7) being produced from an optics blank according to one of the preceding claims.
    [14]
    14. Optics according to claim 13, which is produced by cutting the optics blank in a length suitable for the linear light.
    [15]
    15, linear lamp, which comprises a lamp, a housing profile (9) and a mounted on the housing profile (9) optics (7) according to claim 13 or 14, wherein the optics (7) covers the illuminant and wherein the angle between the mounting edges (2 ) and the cover sheet (1) of the optics (7) are reduced relative to the basic angle (α).
    类似技术:
    公开号 | 公开日 | 专利标题
    DE102006039705A1|2008-02-28|Lens attachment for a headlight
    EP2726784B1|2016-07-20|Luminaire with a potting compound
    DE10332393A1|2005-02-03|Lamp for motor vehicles, comprises a light source, preferably an LED which is detachably connected to a light conductor
    DE102006021973A1|2007-11-15|Luminaire with at least one lighting unit for vehicles, preferably for motor vehicles
    DE202015100867U1|2015-03-02|light assembly
    DE102006035842A1|2007-03-22|Vehicle lamp e.g. side blinking lamp, for use in cap of external rear mirror, has integrally formed optical fiber-blind unit that includes optical fiber and blind section, where unit is manufactured by two-component spray casting process
    EP2805106B1|2015-12-02|Damp-proof led luminaire
    DE102008017614B3|2009-09-17|lighting device
    EP2796770B1|2016-09-07|Lamp with a light generating unit and a frame element
    WO2016096608A1|2016-06-23|Led support with an led, and lighting unit with such an led support
    EP2711750B1|2015-08-19|LED light with optic panel
    EP0538727A1|1993-04-28|Reflector for a lighting device
    DE102011051034A1|2012-12-20|LED lighting arrangement e.g. suspended lamp, for use at ceiling of building, has carrier comprising support profile having geometry on side of carrier as support profile on another side of carrier, where carrier is mounted at housing
    WO2016166203A1|2016-10-20|Optical system, and assembly for emitting light
    DE102007038788B4|2012-08-09|Light module for a semiconductor light source lamp and semiconductor light source lamp
    CH715292A1|2020-03-13|Optical blank, optics and linear light.
    EP1913302B1|2013-04-24|Light for motor vehicles
    EP3353582A1|2018-08-01|Optical film and light fixture with such an optical film
    EP3569446A1|2019-11-20|Decorative strip
    DE102012102652B4|2014-07-10|Lighting arrangement with LEDs
    EP1132679B1|2002-06-05|Lighting system
    EP0903535A2|1999-03-24|Louvre system for lamps
    DE102016104221B4|2022-01-05|LED light with light control element
    DE102017203200A1|2018-08-30|Luminaire tub for forming a luminaire housing
    EP2647903B1|2016-06-01|Lens element in particular for an emergency lighting module
    同族专利:
    公开号 | 公开日
    CH715292A8|2020-09-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1764963A1|1968-09-12|1971-12-30|Licentia Gmbh|Light strip ceiling light|
    EP2042802A1|2007-09-28|2009-04-01|Zumtobel Lighting GmbH|Lamp with covering profile|
    WO2013102640A1|2012-01-03|2013-07-11|Regent Beleuchtungskörper Ag|Luminaire element and luminaire|
    WO2014174019A1|2013-04-24|2014-10-30|Zumtobel Lighting Gmbh|Light cover for an elongate illumination system|
    DE202014101985U1|2014-04-28|2015-07-30|Zumtobel Lighting Gmbh|Arrangement for forming an elongated, channel-like receiving space|
    法律状态:
    2020-09-30| PK| Correction|Free format text: BERICHTIGUNG A8 |
    优先权:
    申请号 | 申请日 | 专利标题
    CH01040/18A|CH715292A8|2018-08-29|2018-08-29|Optics blank, optics and linear light.|CH01040/18A| CH715292A8|2018-08-29|2018-08-29|Optics blank, optics and linear light.|
    [返回顶部]