• 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 lamp (5, 5a, 5b, 5c, 5d) with a flat light guide (12, 22, 32a, 32b), a reflector (16, 26a, 26b, 36a, 36b) and a lamp (11, 21a) , 21b, 31a, 31b), the lighting means (11, 21a, 21b, 31a, 31b) being arranged on a first end face of the light guide (12, 22, 32a, 32b) in such a way that the lighting means (11, 21a, 21b, 31a, 31b) enters the light guide (12, 22, 32a, 32b) at the first end face and is diffusely scattered by the light guide (12, 22, 32a, 32b) over a flat light output side (FA) of the light guide ( 12, 22, 32a, 32b) of a light-emitting side (A) of the lamp (5, 5a, 5b, 5c, 5d) is emitted, and the reflector (16, 26a, 26b, 36a, 36b) on one of the first End face, preferably opposite, second end face of the light guide (12, 22, 32a, 32b) is arranged that on the second end face of the light guide (12, 22, 32a, 32b) emerging light of the illuminant (11, 21a, 21b, 31a, 31b) is reflected by the reflector (16, 26a, 26b, 36a, 36b) and directed over the light output side (A) of the lamp (5, 5a, 5b, 5c, 5d).
    公开号:AT16995U1
    申请号:TGM316/2014U
    申请日:2014-09-08
    公开日:2021-02-15
    发明作者:Lonsdale Dipl Des Julian
    申请人:Zumtobel Lighting Gmbh；
    IPC主号:
    专利说明:

    description
    FLAT EXHIBITION LIGHT
    The invention relates to a lamp, in particular a lamp for the simultaneous emission of diffuse and directional light.
    [0002] Conventionally, separate lights are used to provide diffuse and directional light. In order to provide diffuse light, it is known to illuminate a light guide from the side, the surface of which is, for example, roughened in order to enable diffuse light emission. For example, the German utility model DE 20 2007 003 819 UI shows a previously described lamp for providing diffuse light.
    The laterally introduced light into the light guide is usually, unless it is emitted as diffuse light on the light output side, passed by means of total reflection through the entire light guide and finally arrives at the opposite side of the light guide with respect to the light coupling side. There it is usually sent back into the light guide by means of reflector elements in order to be available there for the diffuse light emission. Some of the light can emerge on the opposite side without being used directly for light output. This makes the overall system less efficient.
    [0004] The use of spotlights is also known for providing directed light. The use of reflectors for targeted lighting is also known.
    However, in order to achieve a combination of diffuse and directed light, it has hitherto been necessary to use at least one lamp for providing diffuse light and one lamp for providing directed light at the same time. This creates a considerable effort.
    The invention is based on the object of creating a lamp which can emit diffuse and directional light at the same time.
    The object is achieved according to the invention for the device by the features of independent claim 1. Advantageous further developments are the subject of the dependent claims which refer back to them.
    A luminaire according to the invention has a flat light guide, a reflector and a lamp. The lighting means is preferably an LED or several LEDs. The light source is arranged on a first end face of the light guide in such a way that light generated by the light source enters the light guide at the first end face and is diffusely dispersed by the light guide over a flat light output side of the light guide on a light output side of the lamp. The reflector is arranged on a second end face of the light guide, preferably opposite the first end face, that the light of the illuminant emerging from the light guide on the second end face is reflected by the reflector and directed over the light output side of the lamp. It is thus possible to simultaneously achieve a diffuse and directed light output by using only a single lamp with only a single lamp.
    The lamp preferably has a lamp housing in which the light guide, the illuminant and the reflector are arranged. An inside of the luminaire housing is designed to be reflective in the area of the light guide in such a way that it reflects light emitted by the light guide back into the light guide. The reflector can optionally be designed as part of the lamp housing. In this way, an increase in the light output and thus the overall efficiency of the luminaire can be achieved.
    Preferably, the light guide has, on its side facing and / or facing away from the light output side, a decoupling element, such as a roughened or reflective surface or a structured surface or a decoupling layer. Additionally or alternatively, the light guide has an upper face on the second face that promotes the exit of light.
    surface structure, preferably a polished surface. Both measures achieve a further increase in the light yield.
    [0011] The reflector preferably has a lamellar grid which is designed to remove glare from the directionally laterally reflected light. This ensures that no glare occurs despite the directional characteristics of the reflected light.
    The lamp preferably has a further light source, preferably an LED or several LEDs, which is attached to the second end face of the light guide. The luminaire then has a further reflector which is attached to the first end face of the light guide. In this way, the light output can be increased and at the same time the homogeneity of the diffuse light output increased.
    Preferably, the further illuminant is arranged on the second end of the light guide in such a way that light generated by the further illuminant enters the light guide at the second end and is diffusely diffusely emitted by the light guide over the flat light output side. The further reflector is arranged on the first end face in such a way that light of the further illuminant emerging from the light guide on the first end face is reflected by the further reflector and emitted in a directed manner via the light output end of the lamp. These measures also increase the illuminance and at the same time improve the homogeneity of the diffuse lighting.
    Preferably, the first end face is only partially covered by the illuminant, so that light emitted from the further illuminant into the light guide and light exiting at the first end face is at least partially reflected by the further reflector and directed over the light output side of the lamp. Furthermore, the second end face is only partially covered by the further illuminant so that light emitted by the illuminant into the light guide and exiting at the second end face is at least partially reflected by the reflector and directed over the light output side of the lamp. This ensures that not all of the light generated by the illuminants and emerging from the side of the light guide is absorbed by the illuminants opposite, but reaches the reflectors. An increased light yield is achieved in this way.
    The lamp is preferably constructed in such a way that the reflector and / or the further reflector are exchangeable. Different desired directional characteristics of the light reflected by the reflectors can be realized by means of differently designed reflectors. A great flexibility in the use of the lamp is achieved in this way.
    A preferred lamp arrangement includes two lamps described above. The lights are arranged in one plane in such a way that the lighting means emit light in opposite directions and that the light guides and reflectors of the lights emit light on a common side of the plane.
    A preferred lighting system includes a power rail, an electronics unit, a bracket and a lamp or a lamp arrangement described above. The busbar is attached to a surface, e.g. a ceiling, and carries the electronics unit. The electronic unit carries the lamp or lamp arrangement by means of the holder. A very simple production of the lighting system can thus be achieved.
    The light guide is preferably made of polymethyl methacrylate (PMMA).
    The invention is described by way of example with reference to the figures of the drawings, in which advantageous exemplary embodiments of the invention are shown. In the drawings show:
    [0020] FIG. 1 shows a first exemplary embodiment of the lighting system according to the invention with a first exemplary embodiment of the lighting according to the invention in different views;
    [0021] FIG. 2 shows a second exemplary embodiment of the lamp according to the invention in a sectional illustration;
    Fig. 3 shows a third embodiment of the lamp according to the invention in a sectional view, and
    Fig. 4 shows a first embodiment of the lamp arrangement according to the invention with a fourth embodiment of the lamp according to the invention in a sectional view.
    First, the general structure and the general mode of operation of an exemplary embodiment of the lighting system according to the invention will be explained with reference to FIG. The mode of operation and the structure of various exemplary embodiments of the luminaire or luminaire arrangement according to the invention will then be discussed with reference to FIGS. 2-4. Identical elements were in some cases not shown or described repeatedly in similar figures.
    In Fig. 1, an embodiment of the lighting system 1 according to the invention is shown. A side view is shown in the top view. A three-dimensional representation is shown in the lower left-hand view. A top view is shown in the lower right view. The lighting system 1 includes a busbar 2 which is connected to an electronics unit 3 which carries a lamp 5 by means of a holder 4. The lamp 5 is arranged flat and emits light downwards. That is to say, the lamp 5 emits light in the direction facing away from the holder 4, the electronics unit 3 and the busbar 2. With regard to the precise structure of the lamp 5, reference is made to the explanations relating to FIGS. 2-4.
    In Fig. 2, an embodiment of the lamp 5a according to the invention is shown. Shown here is a sectional view. The direction of light emission is to the right. The lamp 5a includes a housing 13, for example an aluminum housing. The housing 13 comprises a profile 10, preferably an aluminum profile, by means of which the light 5a can be attached to the holder 4 from FIG. 1. A lighting means 11, preferably an LED or an LED module with a plurality of LEDs, is arranged within the housing 13. In addition, a (flat) light guide 12 with a flat light-emitting side FA is arranged inside the housing 13. Furthermore, the housing 13 comprises a reflector 16 and a louvre grid 5. The reflector 16 can be designed as part of the housing 13 or can be detachably connected to the housing 13.
    Light emitted by the lighting means 11 enters the light guide 12. The light guide 12 guides the light and emits it in the direction of emission - to the right. In order to promote the diffuse light emission through the light guide 12, the light guide 12 preferably has a decoupling element or a decoupling structure, such as a roughened surface or a structured surface or a decoupling layer or an (at least partially) reflective surface on its light output side A facing and / or opposite side or surface. To improve the light yield, the inside of the housing 13 in the area of the light guide 12 - that is, where the inside of the housing and the light guide are in flat contact - is designed to be reflective, so that light generated by the lighting means 11 and radiating against the housing 13 is back into the Light guide 12 is reflected.
    The lighting means 11 is arranged on a first end face of the light guide 12. On a second end face of the light guide 12, which is preferably arranged on a side of the light guide 12 opposite the first end face, there is preferably a surface structure 14 that promotes the exit of light, preferably a polished surface structure. This ensures that residual light emerging from the light guide 12 at the second end face can be reflected by the reflector 16 in the direction of emission.
    The reflector 16 thus generates directed light in the emission direction, while the light guide 12 generates diffuse light in the emission direction. Thus, both diffuse and directional light can be emitted via the light emitting side A of the lamp 5a. In order to avoid glare effects, the reflector 16 also preferably has a lamellar grid 15.
    The reflectors are optionally designed to be interchangeable in all exemplary embodiments, so that the directional characteristic can be adjusted by using a suitable reflector.
    In Fig. 3, a further embodiment of the lamp 5b according to the invention is shown. The luminaire 5b has a housing 23 and a light guide 22. Furthermore, the lamp 5b has a first illuminant 21a on a first end of the light end of the light guide 22 and a second illuminant 21b on a second end of the light guide 22. These lighting means 21a, 21b are also each preferably at least one LED or an LED module with a plurality of LEDs. The lamp 5b furthermore has a surface 24b promoting the light exit on the first end face of the light guide 22 and a surface 24a promoting the light exit on the second end face of the light guide 22. These are also preferably polished surfaces. In addition, the lamp 5b has a reflector 26a, 26b on both sides of the light guide 22, preferably each with a lamellar element 25a, 25b.
    During operation, light is generated by the two illuminants 21a and 21b and radiated into the light guide 22 in the opposite direction. The light guide 22 emits diffuse light in the emission direction. Here, too, the inside of the housing 23 in the area of the light guide 22 is preferably designed to be reflective. Light of the first illuminant 21a, which reaches the second end face of the light guide 22, leaves the light guide there via the surface 24a and is reflected by the reflector 26a as directed light in the direction of emission. Light generated by the second illuminant 21b, which reaches the surface 24b through the light guide 22, leaves the light guide 22 there and is reflected by the reflector 26b in the direction of emission as directed light. So that a significant light yield of the directed light can be achieved, the lighting means 21a and 21b are designed in such a way that they only take up a small part of the cross section of the lamp 5b. That is to say, a significant part of the light emerging from the light guide 22 at the surfaces 24a and 24b can pass the lighting means 21a and 21b and be reflected by the reflectors 26a and 26b.
    In Fig. 4, two lights 5c, 5d are shown according to a further embodiment. The lamps 5c, 5d form a lamp arrangement 6. The lamp 5c comprises a profile 30, a lamp 31a, an optimal housing 33a, a light guide 32a, an optimal surface 34a promoting the light emission, a reflector 36a and an optimal slat element 35a. The function corresponds to the function of the lamp 5a from FIG. 2. The lamp 5c shares a common profile 30, preferably an aluminum profile, with the lamp 5d, which via a lamp 31b, a housing 33b, a light guide 32b, a reflector 36b , a surface 34b promoting the exit of light and a lamellar element 35b. The function of the lamp 5d also corresponds to the function of the lamp 5a from FIG. 2. By "back-to-back" mounting of two lamps 5c, 5d, the light output of the lamp arrangement is doubled compared to the light output of a single lamp A symmetrical structure is achieved, which is desirable for numerous applications, In addition, the loss of efficiency that occurs in a luminaire 5b according to FIG.
    The invention is not limited to the illustrated embodiment. In addition to LEDs as light sources, conventional incandescent lamps, halogen lamps, fluorescent tubes, etc. can also be used. Instead of a louvre, an alternative, optimal anti-glare element can also be used.
    All of the features described above or shown in the figures can be advantageously combined with one another as desired within the scope of the invention, provided they are covered by the subject matter of the following claims and in particular enable a combined light output of diffuse and directional light.
    权利要求:
    Claims (8)
    [1]
    1. Light (5, 5a, 5b, 5c, 5d) with a flat light guide (12, 22, 32a, 32b), a reflector (16, 26a, 26b, 36a, 36b) and a lamp (11, 21a, 21b , 31a, 31b), preferably at least one LED, the lighting means (11, 21a, 21b, 31a, 31b) being arranged on a first end face of the light guide (12, 22, 32a, 32b) in such a way that the lighting means (11 , 21a, 21b, 31a, 31b) light generated on the first face enters the light guide (12, 22, 32a, 32b) and from the light guide (12, 22, 32a, 32b), which on its the light output side (FA) facing or averted side has a decoupling element, such as a roughened surface or a structured surface or a decoupling layer or a reflective surface, and / or that the light guide (12, 22, 32a, 32b) on the second end face a surface structure promoting the light exit , preferably has a polished surface (14, 24a, 24b, 34a, 34b), diffusely scattered over a flat Li output side (FA) of the light guide (12, 22, 32a, 32b) of a light output side (A) of the lamp (5, 5a, 5b, 5c, 5d), the reflector (16, 26a, 26b, 36a, 36b) is arranged on a second end face of the light guide (12, 22, 32a, 32b), preferably opposite the first end face, that light of the illuminant (11, 21a) emerging from the light guide (12, 22, 32a, 32b) on the second end face , 21b, 31a, 31b) is reflected by the reflector (16, 26a, 26b, 36a, 36b) and directed over the light-emitting side (A) of the lamp (5, 5a, 5b, 5c, 5d), the reflector (16 , 26a, 26b, 36a, 36b) is arranged in an extension of the light guide (12, 22, 32a, 32b) and is concavely curved.
    [2]
    2. lamp (5, 5a, 5b, 5c, 5d) according to claim 1, characterized in that the lamp (5, 5a, 5b, 5c, 5d) has a lamp housing (13, 23, 33a, 33b), in which of the light guides (12, 22, 32a, 32b), the lighting means (11, 21a, 21b, 31a, 31b) and the reflector (16, 26a, 26b, 36a, 36b) are arranged, and that an inside of the lamp housing ( 13, 23, 33a, 33b) in the area of the light guide (12, 22, 32a, 32b) is designed to be reflective in such a way that it emits light from the illuminant (11, 21a, 21b) emitted by the light guide (12, 22, 32a, 32b) , 31a, 31b) are reflected back into the light guide (12, 22, 32a, 32b).
    [3]
    3. lamp (5, 5a, 5b, 5c, 5d) according to one of claims 1 or 2, characterized in that the reflector (16, 26a, 26b, 36a, 36b) has a lamellar grid which is designed to provide glare reduction of the directed laterally reflected light.
    [4]
    4. lamp (5a, 5b, 5c, 5d) according to one of claims 1 to 3, characterized in that the lamp (5b) has a further illuminant (21b), preferably at least one LED, which is located on the second end face of the light guide (22) is attached that the lamp (5b) has a further reflector (26b) which is attached to the first end face of the light guide (22).
    [5]
    5. lamp (5b) according to claim 4,
    characterized,
    that the further illuminant (21b) is arranged on the second end face of the light guide (22) in such a way that light generated by the further illuminant (21b) enters the light guide (22) at the second end face and from the light guide (22) which on its side facing or facing away from the light output side (FA) has a decoupling element, such as a roughened surface or a structured surface or a decoupling layer or a reflective surface, and / or that the light guide (22) on the second end face one, the light exit promoting surface structure, preferably a polished surface (24a, 24b), is diffusely scattered over the flat light-emitting side (FA),
    that the further reflector (26b) is arranged on the first end face in such a way that light from the further illuminant (21b) emerging from the light guide (22) on the first end face
    directed laterally by the further reflector (26b) and directed over the light output side (A) of the lamp (5b), the reflector (26a, 26b) being arranged in an extension of the light guide (22) and having a concave shape.
    [6]
    6. lamp (5b) according to claim 4 or 5, characterized in that the first end face of the illuminant (21a) is only partially covered, so that from the further illuminant (21b) in the light guide (22) emitted and at the first end face exiting light is at least partially reflected by the further reflector (26b) and directed via the light output side (A) of the lamp (5b), and that the second end face is only partially covered by the further lamp (21b) so that the lamp ( 21a) light emitted into the light guide (22) and exiting at the second end face is at least partially reflected by the reflector (26a) and directed via the light output side (A) of the lamp (5b).
    [7]
    7. lamp (5, 5a, 5b, 5c, 5d) according to one of claims 1 to 6, characterized in that the lamp (5, 5a, 5b, 5c, 5d) is constructed in such a way that the reflector (16, 26a , 26b, 36a, 36b) and / or the further reflector (16, 26a, 26b, 36a, 36b) are interchangeable, and that by means of differently designed reflectors (16, 26a, 26b, 36a, 36b) different directional characteristics of the reflectors reflected light can be realized.
    [8]
    8. lighting system (1) with a Straomschiene (2), an electronics unit (3), a holder (4) and a lamp (5) according to one of claims 1 to 7, characterized in that the busbar (2) the electronics unit ( 3) and that the electronics unit (3) carries the lamp (5) or lamp arrangement (6) by means of the holder (4).
    For this purpose 2 sheets of drawings
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    同族专利:
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202014103671.7U|DE202014103671U1|2014-08-07|2014-08-07|Flat exhibition light|
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