• 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:
    A belt-shaped, planar lighting device (1) for a motor vehicle, comprising a number of elastic optical fibers (2), each fiber (2) having a light coupling surface (2a) for coupling light from at least one light source (5), the fibers (2 ) are held in a band-shaped elastic composite (3), wherein the composite (3) consists of at least three superimposed band-shaped layers (4), wherein between the individual layers (4) at least one fiber (2), wherein the fibers ( 2) are adapted to extract light at least in sections through the composite (3).
    公开号:AT517740A1
    申请号:T50857/2015
    申请日:2015-10-07
    公开日:2017-04-15
    发明作者:Hagleitner Daniel；Hartmann Peter
    申请人:Zkw Group Gmbh；
    IPC主号:
    专利说明:

    Band-shaped, planar lighting device for a motor vehicle
    The invention relates to a band-shaped, planar lighting device for a motor vehicle, comprising a number of elastic light-conducting fibers, each fiber having a light coupling surface for coupling light from at least one light source.
    Furthermore, the invention relates to a motor vehicle headlamp, comprising at least one lighting device according to the invention and a motor vehicle, comprising at least one lighting device and / or at least one motor vehicle headlight.
    Lighting devices according to the prior art usually consist of a specifically shaped, rigid housing with a light source housed therein and adapted optics. On the one hand, this construction concept results in a considerable installation depth and, on the other hand, the luminaire including production equipment (eg injection molding tools) has to be completely redesigned for each individual application.
    An object of the invention is therefore to provide a lighting device which can be used for different applications and housing provided for this purpose in a simple manner, without requiring special changes to the lighting device are necessary. This object is achieved with a lighting device of the type mentioned, in which according to the invention the fibers are held in a band-shaped elastic composite, wherein the composite consists of at least three superimposed band-shaped layers, wherein between the individual layers at least one fiber extends, wherein the fibers are adapted to couple light at least partially through the composite.
    Thanks to the invention, it is possible to realize a compact, cost-effective lighting device that can be used for a variety of applications and adapted to various contours, in particular housing contours, or attached to these contours. The term "strip-shaped, planar lighting device" is understood to mean a lighting device whose length is greater than its width, the thickness of the lighting device being significantly smaller than its width
    Way e.g. manufactured in any length and wound on a support body for transport purposes. The lighting device could then be unwound and / or cut off from the carrier body depending on the desired insert into the desired length.
    The lighting device can be, for example, a lighting device, that is to say a lighting device for targeted illumination of the surroundings of the lighting device, or else a signal lighting device. In the case of a signal light device, the visibility of the signal light is in the foreground. This may be, for example, a direction indicator, which must be recognizable from a vehicle observer from different perspectives. Direction indicators have legal prospects in many countries.
    In particular, it can be provided that the fibers are adapted to decouple light along the entire longitudinal extent of the composite radially out of the fiber with approximately constant intensity. For this purpose, preferably light extraction elements, in particular in the fiber volume deliberately introduced, acting as scattering elements or diffraction patterns impurities provided, which are disposed within the fiber. This radial decoupling can take place uniformly over the full circumference (for example: Dow Corning fibers) or preferably in a tailor-made angular segment (L.E.S.S. fibers).
    Alternatively, it may be provided that the fibers are adapted to couple out light only along a portion of the longitudinal extent of the composite, wherein the portion is preferably between 5% and 50%, particularly preferably between 10% and 20% of the longitudinal extent of the fiber. If several such fibers are arranged side by side, in an arrangement in which each fiber is associated with a light source and the light outcoupling sections of individual fibers adjacent to each other a running light effect can be achieved in which by a temporal sequence of the feeding of light into the individual fiber, the impression of This effect can be used for example in a dynamic direction indicator (also called wipers), the low fiber diameter with high flexibility, the formation of sharp edges with small radii according to eg arrowheads is made possible.
    In addition, it can be provided that the layers are substantially parallel to one another, wherein the fibers extend in a plane parallel to the layers. This allows a particularly uniform and compact structure of the lighting device.
    In particular, it can be provided that the lighting device has exactly one fiber, which is deflected at least one along the composite location from lying within a pair of layers course to lie within another pair of layers course, wherein a pair of layers formed by two opposing layers is. It can thus be ensured that only a single light color, namely that which was coupled into the fiber, is emitted along the entire lighting device, whereby a particularly homogeneous light impression can be achieved in a simple manner, also with regard to the intensity distribution. A first layer pair may for example be formed from a first and second layer; a second layer pair, for example, through the second and third layers, etc .; The term "within a pair of layers" therefore means that a fiber is arranged between the respective layers of a layer pair and extends along the longitudinal extension of the layers.
    Alternatively, it can be provided that the lighting device comprises a plurality of fibers, wherein the composite consists of a number of at least two pairs of layers, wherein a layer pair is formed by two opposing layers, wherein within a layer pair at least one, preferably two or more, separate fiber / n is arranged. By providing a plurality of fibers, it is possible to feed the fibers, for example, by different light sources and thus to emit complex light distributions through the lighting device. The number of ply pairs is at least two, but may be three, four, or more.
    In particular, it can be provided that the lighting device comprises at least three light sources, wherein the light sources are jointly adapted to couple red, green and blue light independently of each other in the fibers, each light source is preferably an LED. As a result of the mixture of red, green and / or blue light, substantially any color impressions can be emitted by the lighting device. In a simple embodiment, a red light emitting LED, a green light emitting LED, and a blue light emitting LED may be provided.
    In addition, it can be provided that each light source is more accurately associated with a fiber and vice versa. For a particularly simple construction of a lighting device is given.
    To produce a two-dimensional light impression, it can be provided that sections of individual fibers are arranged next to one another in the longitudinal direction of the composite, wherein the distance between the fibers is between Omm and 20mm, preferably between 0mm and 5mm.
    In addition, the fibers may have a meander-shaped course between the layers, as a result of which it is also possible to realize large-area lighting devices with a manageable number of fibers having a sufficient luminance.
    It can easily be provided that the lighting device comprises at least one light source, wherein the at least one light source is an LED.
    Alternatively, it can be provided that the lighting device comprises at least one light source, wherein the at least one light source is a laser diode.
    In order to convert typically monochromatic light, in particular laser light, coupled into the fibers into multispectral, eg white, secondary light, provision may be made for the fibers and / or one of the layers to be light-converting means, in particular a so-called "phosphor" based on luminescent material such as: Ce: YAG according to the prior art, are coated.
    It can also be provided that the composite has an inner layer forming an inner surface and an outer layer forming an outer surface, wherein the inner layer consists of a light-reflecting material or coated with a light-reflecting material, in particular aluminum, wherein the inner and the outer layer, in particular the inner and outer surface, the composite to the outside limit. By seeing before a light-reflecting inner layer larger amount of light is emitted in the direction of the outer surface.
    For easy attachment of the lighting device to a mounting surface can be provided that the inner surface is coated with an adhesive material. The lighting device can thus be easily glued to the mounting surface, such as a reflector surface or a housing surface of a headlamp.
    In particular, it can be provided that all layers, with the exception of the inner layer, are translucent, in particular transparent. In arrangements in which lighting device, for example, a reflector attached, in particular glued, is, the inner layer may alternatively be also transparent, in particular transparent, executed.
    In addition, it can be provided that the outer layer consists of a material which has anisotropic optical properties. This makes it possible to emit light in a predeterminable solid angle through the lighting device. Such a material is known for example from the application in "Light Shaping Diffusers" (LSD), which are made by the company "Luminit" ago.
    For example, films with applied structures, eg: holographic patterns as used for so-called "beam shaping", can be used to expand the very high luminance luminous line due to the small fiber diameter over a very short distance so that the distances between two luminous fibers In a favorable manner, it can be provided that each fiber is a glass fiber or a polymer optical fiber, wherein the fibers preferably have a specific sheathing.
    In a variant of the invention, the lighting device can be designed as a signal light.
    Alternatively, it can be provided that the lighting device is designed as a lighting device.
    In a further aspect of the invention, the object mentioned above is achieved with a motor vehicle headlamp comprising at least one lighting device according to the invention.
    A further aspect of the invention relates to a motor vehicle, comprising at least one lighting device according to the invention and / or at least one motor vehicle headlight according to the invention.
    The invention is explained in more detail below with reference to exemplary and non-limiting embodiments, which are illustrated in the figures. It shows
    FIG. 1 is a schematic sectional view of a first embodiment of the invention,
    FIG. 2 shows a schematic illustration of a second embodiment of the invention,
    FIG. 3 shows a schematic representation of a third embodiment of the invention,
    FIG. 4 shows an exemplary profile of fibers of a composite in a plan view,
    Figure 5 shows an alternative course of fibers of a composite in a plan view, and
    Figure 6 shows an exemplary arrangement of fiber.
    In the following figures, unless otherwise stated, like reference numerals designate like features.
    Figure 1 shows a schematic sectional view of a first embodiment of the invention. Therein, a band-shaped, planar lighting device 1 is shown, which is suitable for example for use in a motor vehicle. The lighting device 1 comprises a number of elastic photoconductive fibers 2, e.g. one, two, three or more
    Fibers, each fiber 2 having a light coupling surface 2a for coupling light from at least one light source 5 (see FIGS. 4 and 5), the light coupling surface 2a being shown in the sectional plane in the present example. Preferably, the light coupling surface 2a is arranged at a front or rear end of the longitudinal extension of the lighting device 1. The fibers 2 are held in a band-shaped elastic composite 3, wherein the composite 3 of at least - in the present example exactly - three superimposed band-shaped layers 4, wherein between the individual layers 4 at least one fiber 2 extends, the fibers 2 set up are to couple light at least partially through the composite 3.
    In the embodiment according to FIG. 1, the layers 4 run essentially parallel to one another, the fibers 2 each extending in planes parallel to the layers 4. The fibers 2 are arranged side by side in the longitudinal direction of the composite 3. The distance between the fibers 2 is between Omm and 20mm, preferably between 0mm and 5mm, to produce a two-dimensional light impression. The composite 3 has an inner surface 4a forming an inner surface 4a 'and an outer layer 4b forming an outer surface 4b', wherein the inner layer 4a consists of a light-reflecting material or is coated with a light-reflecting material, in particular aluminum. The inner and outer layers 4a and 4b, in particular the inner and outer surfaces 4a 'and 4b', bound the composite 3 to the outside. The inner layer 4 preferably has a light-reflecting coating, on whose inner surface 4a 'adhesive material is applied, so that the lighting device 1 can be glued by means of the inner surface 4a' to a support surface provided for this purpose. The remaining layers 4 are preferably translucent, in particular transparent, executed.
    The outer layer 4b may be made of a material having anisotropic optical properties, by which the light can be targeted or aligned. The lighting device 1 has in this embodiment, a plurality of fibers 2, wherein the composite 3 is formed from a pair of layers, wherein a layer pair is formed by two opposing layers 4, wherein within a layer pair at least one, preferably two or more, separate fiber / n 2 are arranged.
    Figure 2 shows a schematic representation of a second embodiment of a lighting device 1 according to the invention, wherein also three layers 4 are shown therein, wherein the middle layer in contrast to Figure 1 is now performed wavy, so that those fibers which are disposed within the upper pair of layers, after are offset below in the direction of the fibers of the lower layer pair and the fibers of the upper and lower layer pair are arranged almost in one plane. As a result, the fibers 2 can be arranged particularly compact and flat.
    Figure 3 shows a schematic representation of a third embodiment of the invention, more precisely a section of the composite 3, in which only the lower layer pair is shown. The remaining pairs of layers can be carried out analogously to FIG. 1 or 2. In order to improve the luminous efficacy or for a more homogeneous appearance of the luminous surface, it is provided in this embodiment that the layer 4 which receives the fiber 2 is structured distinctly in the sense of a "fiber absorption shape." This not only results in a positive fixing of the fiber but also also a clear matrix thickness "h" in the order of up to 10mm. This approach is particularly useful when a final outer layer 4b of the composite has optically light-forming properties (for example the Light Shaping Diffuser of the company Luminit mentioned in the introduction), as a result of which the light image is influenced as desired (homogeneity or targeted luminous structure). In such a composite structure, it is particularly advantageous if the shaped matrix has reflective properties (metal [A1] layer, applied or embossed structures, total reflection geometry).
    Figures 4 and 5 show exemplary courses of fibers 2 of a composite 3 in a plan view. In FIG. 4, a fiber 2 extends in meandering fashion between the layers 4. In FIG. 5, however, a fiber 2 runs in loops which follow a meandering strand. Both in Figure 3 and in Figure 4, a light source 5 is shown, which is adapted to couple light into the respective fiber 2.
    Figure 6 shows an exemplary arrangement of fibers 2, as they can be arranged in the lighting device 1 according to the invention. These fibers 2 are adapted to couple light only along a portion of the longitudinal extent of the composite, wherein the portion is preferably between 5% and 50%, more preferably between 10% and 20% of the longitudinal extent of the fiber 2. In Figure 6 are exemplary of the
    Fiber sections 2b, 2c and 2d provided with reference numerals. By arranging a plurality of such fibers 2 side by side, a running light effect can be achieved, for example by assigning a light source to each fiber 2, the light outcoupling sections 2b, 2c and 2d of individual fibers adjoining each other, and wherein a temporal sequence of the infeed of light into This effect can be used, for example, in a dynamic direction indicator (also called a wiper-type indicator). In other words, to produce dynamic light functions it can be provided that several fibers 2 are arranged next to one another, wherein only one subsection emits light in each fiber 2. One application of this is to create a very compact dynamic direction indicator with sharp segment boundaries.
    The lighting device 1 according to the invention is preferably produced by a manufacturing process which is also known from film processing (lamination, lamination, extrusion), in particular the production of long fiber reinforced composites for producing mechanically highly resilient laminate materials. In particular, the method of forming the fiber template (fiber bundling and alignment [arallel] with adjustable spacing between single strands and +/- x / y plating [atterning]) may be of great importance.
    The layers 4 are preferably made of thermoplastic material. Reflective inner layers 4a can be present as films or can be introduced into the composite 3 at least on one side as a melt. After composite formation, the fibers may either be fixed only at contact lines or be wetted by the matrix material up to the complete covering.
    As the material for forming the sheets 4, both matrix pure materials (PC, PMMA, PET [O / BO], PA, PEI, PSU, COC, various POs, styrene derivatives, etc.) as well as modifications and mixtures thereof are suitable.
    The matrix films or layers 4 can advantageously have a multi-layered function, for example with a carrier layer and a binder layer; On the inside, it is possible to use an Al composite foil (Al foil or PVD layer) (reflection layer).
    Alternatively, in particular for thermal stability reasons, thermoset films (eg: phenol-formaldehyde, melamine / urea ...) or peel sheets of sintered material (eg: LCP, PPS, UH-PE, PTFE) can be used as layer 4 (adhesive lamination or combination with thermoplastics).
    Particularly in the case of adhesive lamination, it is possible to embed fiber 2 in a reactive resin (epoxy / phenol / phenoxy / MMA; partially crosslinking thermoplastic; hot-melt adhesive (EVA, PVB [general vinyl ester], PA, TPU, silicones).
    In terms of process technology, it is both possible to laminate the fiber 2 directly or to fix it first on a film in a separate operation and then to subsequently laminate it.
    The layers 4 can be designed to be light-scattering or light-deflecting. Corresponding materials are known to the person skilled in the art.
    By different radii in different sections of the bonded fibers 2, which are generated by the laid pattern or the bending of the composite 3, the intensity of the light extraction from the fiber 2 can be advantageously influenced (avoidance of light losses at deflection points, structuring of the luminous area), whereby setting of accents (design or lighting function) is possible.
    In view of this teaching, one skilled in the art will be able to arrive at other, not shown embodiments of the invention without inventive step. The invention is therefore not limited to the embodiments shown. Also, individual aspects of the invention or the embodiments can be picked up and combined with each other. Essential are the ideas underlying the invention, which can be performed by a person skilled in the knowledge of this description in a variety of ways and still remain maintained as such.
    权利要求:
    Claims (22)
    [1]
    claims
    A belt-shaped, planar lighting device (1) for a motor vehicle, comprising a number of elastic optical fibers (2), each fiber (2) having a light coupling surface (2a) for coupling light from at least one light source (5), characterized the fibers (2) are held in a band-shaped elastic composite (3), the composite (3) consisting of at least three band-shaped layers (4) arranged one above the other, wherein at least one fiber (2) runs between the individual layers (4) wherein the fibers (2) are adapted to couple light at least in sections through the composite (3).
    [2]
    2. Lighting device (1) according to claim 1, characterized in that the fibers (2) are adapted to couple out light along the entire longitudinal extent of the composite (3).
    [3]
    3. Lighting device (1) according to claim 1, characterized in that the fibers (2) are adapted to couple light only along a portion (2b, 2c, 2d) of the longitudinal extent of the composite (3), wherein the portion preferably between % and 50%, more preferably between 10% and 20% of the longitudinal extent of the fiber (2).
    [4]
    4. Lighting device (1) according to any one of the preceding claims, characterized in that the layers (4) extend substantially parallel to each other, wherein the fibers (2) extend in a plane parallel to the layers (4).
    [5]
    5. Lighting device (1) according to any one of the preceding claims, characterized in that the lighting device (1) has exactly one fiber (2) located on at least one along the composite (3) location from a lying within a pair of layers course towards a lying within another layer pair profile is deflected, wherein a pair of layers by two opposing layers (4) is formed.
    [6]
    6. lighting device (1) according to one of claims 1 to 4, characterized in that the lighting device (1) comprises a plurality of fibers (2), wherein the composite (3) consists of a number of at least two pairs of layers, wherein a pair of layers by two opposing layers (4) is formed, wherein within a layer pair at least one, preferably two or more, separate fiber / n (2) is arranged.
    [7]
    7. lighting device (1) according to claim 6, characterized in that the lighting device (1) comprises at least three light sources (5), wherein the light sources (5) are arranged together to red, green and blue light independently from each other in the fibers ( 2), each light source (5) preferably being an LED.
    [8]
    8. lighting device (1) according to claim 6 or 7, characterized in that each light source (5) is associated with exactly one fiber (2) and vice versa.
    [9]
    9. lighting device (1) according to one of claims 6 to 8, characterized in that sections of individual fiber / n (2) in the longitudinal direction of the composite (3) are arranged side by side, wherein the distance between the fibers (2) for generating a planar Light impression between Omm and 20mm, preferably between 0mm and 5mm.
    [10]
    10. Lighting device (1) according to any one of the preceding claims, characterized in that the fibers (2) between the layers (4) have a meandering course.
    [11]
    11. Lighting device (1) according to one of the preceding claims, characterized in that the lighting device (1) comprises at least one light source (5), wherein the at least one light source (5) is an LED.
    [12]
    12. Lighting device (1) according to one of the preceding claims, characterized in that the lighting device (1) comprises at least one light source (5), wherein the at least one light source (5) is a laser diode.
    [13]
    13. Lighting device (1) according to one of the preceding claims, characterized in that the fibers (2) and / or one of the layers (4) are coated with a light-converting agent, in particular with luminescent material.
    [14]
    14. Lighting device (1) according to one of the preceding claims, characterized in that the composite (3) has an inner surface (4a ') forming inner layer (4a) and an outer surface (4b') forming outer layer (4b), wherein the Inner layer (4a) consists of a light-reflecting material or with a light-reflecting material, in particular aluminum, coated, wherein the inner and the outer layer (4a, 4b), in particular the inner and outer surface (4a ', 4b'), the composite (3) limit to the outside.
    [15]
    15. Lighting device (1) according to claim 14, characterized in that the inner surface (4a ') is coated with an adhesive material.
    [16]
    16. Lighting device (1) according to claim 14 or 15, characterized in that all the layers (4) with the exception of the inner layer (4a) transparent, in particular transparent, are.
    [17]
    17. Lighting device (1) according to any one of claims 14 to 16, characterized in that the outer layer (4b) consists of a material having anisotropic optical properties.
    [18]
    18. Lighting device (1) according to any one of the preceding claims, characterized in that each fiber (2) is a glass fiber or a polymeric optical fiber.
    [19]
    19. Lighting device (1) according to one of the preceding claims, characterized in that the lighting device (1) is designed as a signal light.
    [20]
    20. Lighting device (1) according to one of the preceding claims, characterized in that the lighting device (1) is designed as a lighting device.
    [21]
    21. A motor vehicle headlamp, comprising at least one lighting device (1) according to one of the preceding claims.
    [22]
    22 motor vehicle, comprising at least one lighting device (1) and / or at least one motor vehicle headlight according to one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    AT517740B1|2017-07-15|
    CN106996531A|2017-08-01|
    DE102016116146A1|2017-04-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB2427955A|2005-07-01|2007-01-10|Tornado Show Support Ltd|An illuminated article|
    WO2013114747A1|2012-02-03|2013-08-08|東芝ライテック株式会社|Band-shaped illumination device|
    FR2991936A1|2012-06-14|2013-12-20|Faurecia Interieur Ind|Trimming element i.e. back-lighted trimming element for use in body of car, has decoration layer whose portion has thickness allow decoration layer to allow light coming from side of back of layer to cross portion towards front of layer|
    US6361180B1|1997-02-25|2002-03-26|Keiji Iimura|Light diffusing apparatus using light guide|
    US7556412B2|2006-07-20|2009-07-07|Int America, Llc|Fiber optic auxiliary lighting system|
    US20080225549A1|2007-02-26|2008-09-18|Mahendra Dassanayake|Linear Optic Light Coupler|
    JP2009049008A|2007-07-26|2009-03-05|Panasonic Corp|Planar lighting device, and liquid crystal display using the same|US10259376B2|2017-05-04|2019-04-16|Ford Global Technologies, Llc|Vehicle exterior lighting systems|
    CN110500553A|2018-05-16|2019-11-26|深圳市绎立锐光科技开发有限公司|Light supply apparatus and car headlamp|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50857/2015A|AT517740B1|2015-10-07|2015-10-07|BAND-CONSTRUCTIVE, FLUID LIGHTING DEVICE FOR A MOTOR VEHICLE|ATA50857/2015A| AT517740B1|2015-10-07|2015-10-07|BAND-CONSTRUCTIVE, FLUID LIGHTING DEVICE FOR A MOTOR VEHICLE|
    DE102016116146.2A| DE102016116146A1|2015-10-07|2016-08-30|Band-shaped, planar lighting device for a motor vehicle|
    CN201610868081.6A| CN106996531A|2015-10-07|2016-09-30|Light-emitting device for the planar with shape of motor vehicle|
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