FIBER LIGHT MODULE FOR VEHICLE SIGNALING LIGHT

Abstract

The invention describes a fiber light module comprising at least two light distribution fibers, wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube, wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure, wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface. The invention further describes a vehicle signaling light assembly comprising such a fiber light module and a vehicle signaling light which comprises such a vehicle signaling light assembly or fiber light module.

Claims

1. A fiber light module comprising: at least two light distribution fibers, wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube, wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure, wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, and wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface.

2. The fiber light module according to claim 1, wherein the stabilization structure is arranged to define a maximum distance between the light distribution fibers in a direction perpendicular to a longitudinal extension of the light distribution fibers.

3. The fiber light module according to claim 1, wherein the stabilization structure comprises a bendable foil.

4. The fiber light module according to claim 3, wherein the stabilization structure is arranged to provide a continuous mechanical coupling to the mechanical coupling interface of the guiding structure along a longitudinal extension of the guiding structure.

5. The fiber light module according to any one of claims 1, wherein the stabilization structure is arranged to provide a discontinuous mechanical coupling to the mechanical coupling interface of the guiding structure along the longitudinal extension of the guiding structure.

6. The fiber light module according to claim 5, wherein the stabilization structure comprises a multitude of coupling elements arranged at predefined distances along a longitudinal extension of the guiding structure.

7. The fiber light module according to claim 1, wherein the stabilization structure comprises a stabilization material characterized by a Young's modulus of at least 0.3 GPa, preferably of at least 0.5 GPa and most preferably of at least 1 GPa, wherein the stabilization material rules the mechanical properties of the stabilization structure.

8. The fiber light module according to claim 1, wherein the guiding structure comprises a guiding material characterized by a Young's modulus of at least 30 GPa, preferably at least 50 GPa, wherein the stabilization material rules the mechanical properties of the guiding structure.

9. The fiber light module according to claim 8, wherein the guiding structure comprises a bendable metal wire.

10. The fiber light module according to claim 8, wherein the guiding material is enclosed in a flexible cladding bonded to the stabilization structure.

11. The fiber light module according to claim 1, wherein the fiber guiding tubes comprises a transparent plastic material bonded to the stabilization structure.

12. The fiber light module according to claim 1, wherein at least one of the fiber guiding tubes comprises at least one light manipulation structure arranged to locally change light outcoupling of light guided by means of the enclosed light distribution fiber.

13. A vehicle signaling light assembly comprising: a fiber light module including at least two light distribution fibers; wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube, wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure, wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, and wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface; and at least one light source, and wherein the at least one light source is arranged to couple in light in a lateral end surface of the light distribution fiber.

14. A vehicle signaling light comprising: at least one fiber light module including at least two light distribution fibers; wherein each light distribution fiber is enclosed in a corresponding fiber guiding tube, wherein the fiber guiding tubes are at least partly translucent and mechanically coupled by a stabilization structure, wherein the fiber light module further comprises a guiding structure mechanically coupled to the stabilization structure by means of a mechanical coupling interface, and wherein the guiding structure is arranged to preserve a spatial arrangement of the stabilization structure along the mechanical coupling interface, at least one light source; and an electrical interface, and wherein the electrical interface is arranged to transfer electrical signals to the at least one light source.

15. The vehicle signaling light according to claim 14 further comprising at least one fixture, wherein the at least one fixture is arranged to mechanically couple the fiber light module to the vehicle signaling light in accordance with a predefined shape.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

[0029] The invention will now be described, by way of example, based on embodiments with reference to the accompanying drawings.

[0030] In the drawings:

[0031] FIG. 1 shows a principal sketch of a perspective view of a first embodiment of the fiber light module

[0032] FIG. 2 shows a principal sketch of a cross-section of the first embodiment of the fiber light module along line A-A in FIG. 1

[0033] FIG. 3 shows a principal sketch of a cross-section of a second embodiment of the fiber light module corresponding to line A-A in FIG. 1

[0034] FIG. 4 shows a principal sketch of a perspective view of a third embodiment of the fiber light module

[0035] FIG. 5 shows a principal sketch of a first vehicle signaling light

[0036] FIG. 6 shows a principal sketch of a second vehicle signaling light

[0037] In the Figures, like numbers refer to like objects throughout. Objects in the Figures are not necessarily drawn to scale.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038] Various embodiments of the invention will now be described by means of the Figures.

[0039] FIG. 1 shows a principal sketch of a perspective view of a first embodiment of the fiber light module 100. The fiber light module 100 comprises two light distribution fibers 16 which consist in this embodiment of glass. The two light distribution fibers 16 are embedded in two corresponding fiber guiding tubes 14 which consist of plastic material. The fiber guiding tubes 14 are bonded to a stabilization structure 12 which consists of a flexible plastic foil. A guiding structure 18 is embedded in the stabilization structure 12 to provide a mechanical coupling interface between the guiding structure 18 and the stabilization structure 12 which extends along the longitudinal extension of the guiding structure 18. The guiding structure 18 consist of a metal wire which enables shaping of the fiber light module 100 in accordance with essentially each three-dimensional shape. The fiber light module 100 can be pre-shaped by means of the guiding structure 18 wherein the stabilization structure 12 provides a defined spatial relation between the fiber guiding tubes 14 and therefore the light distribution fibers 16. The mechanical coupling interface provides in combination with the bendable stabilization structure 12 a kind of hinge which enables local bending of the fiber light module 100 in accordance with the flexibility of the chosen materials.

[0040] FIG. 2 shows a principal sketch of a cross-section of the first embodiment of the fiber light module 100 along line A-A shown in FIG. 1. The flexible light distribution fibers 16 are enclosed by the fiber guiding tubes 14. The guiding structure 18 is enclosed by the mechanical coupling interface 19. The guiding structure 18 and the light distribution fibers 16 are mechanically coupled by means of the stabilization structure 12. The fiber guiding tubes 14, the mechanical coupling interface 19 and the stabilization structure 12 consists of the same plastic material and are manufactured in one processing step. The guiding structure 18 and the light distribution fibers 16 may be embedded during production of the stabilization structure 12, the fiber guiding tubes 14 and the mechanical coupling interface 19. The guiding structure 18 and the light distribution fibers 16 may alternatively be inserted after production of the stabilization structure 12, the fiber guiding tubes 14 and the mechanical coupling interface 19. The stabilization structure 12, the fiber guiding tubes 14 and the mechanical coupling interface 19 may, for example, consist of a material which can be shrunk at elevated temperatures such that there is a tight mechanical coupling between the material and the inserted guiding structure 18 and light distribution fibers 16.

[0041] FIG. 3 shows a principal sketch of a cross-section of a second embodiment of the fiber light module 100 corresponding to line A-A in FIG. 1. The light distribution fibers 16 are embedded in corresponding fiber guiding tubes 14 and subsequently glued to the stabilization structure. The guiding structure 18 consists of a deformable plastic material which may be glued to the stabilization structure 12 in the same process step as the fiber guiding tubes 14. The stabilization structure 12 consists of a thin metal foil which provides mechanical coupling between the light distribution fibers 16 and the guiding structure 18 via the glue. The fiber guiding tubes 14 comprise local light manipulation structures 22 which are arranged to locally change the appearance of the light emitted by means of the fiber light module 100.

[0042] FIG. 4 shows a principal sketch of a perspective view of a third embodiment of the fiber light module 100. Two light distribution fibers 16 are embedded in corresponding fiber guiding tubes 14. The light distribution fibers 16 and the guiding structure 18 are bonded to a stabilization structure 12 which comprises several coupling elements or braces which provide a local mechanical coupling between the guiding structure 18 and the fiber guiding tubes 14. The mechanical coupling surface is in this embodiment restricted to the longitudinal extension of the coupling elements or braces (e.g. bonding surface). These braces consist of stiff material such that the spatial relationship between the guiding structure 18 and the fiber guiding tubes 14 is essentially fixed at the local position of the respective brace. The braces can be turned with respect to each other to enable a multitude of possible three-dimensional shapes of the light distribution fibers 16. Number and distance as well as individual size and shape of the braces may be adapted to the intended shape of the fiber light module 100.

[0043] FIG. 5 shows a principal sketch of a first vehicle signaling light 200. The vehicle signaling light comprises a vehicle signaling light assembly comprising a fiber light module 100 and corresponding light sources 120. The fiber light module 100 is very similar as the fiber light module 100 discussed with respect to FIG. 1. The main difference is that the fiber light module 100 comprises three light distribution fibers 16 and corresponding fiber guiding tubes 14. Two guiding structures 18 are arranged between two light distribution fibers 16. Each light distribution fiber 16 is coupled to a corresponding light source 120 (e.g. LED) by means of one light in-coupling facet. The light sources 120 are integrated in an electrical interface 110. The fiber light module 100 is mounted within a cover 130 by means of a multitude of fixtures 132. The fixtures 132 are arranged to fix the stabilization structure 12 at the outer rim of the fiber light module 100. The vehicle signaling light 200 further comprises in this embodiment an extended fixture 134 which extends across the whole stabilization structure 12 essentially perpendicular to the light distribution fibers 16 at the position of the extended fixture 134. Such extended fixtures 134 may be used to enable a precise definition of the three-dimensional arrangement of the light distribution fibers 16 within the boundaries given by the stabilization structure 12. The extended fixture 134 comprises in this embodiment three light outcoupling structures 135 which are optically coupled to the respective light distribution fiber 16. The light outcoupling structures 135 enable manipulation of the light output of the light distribution fiber 16 coupled to the light outcoupling structure 135. The light outcoupling structures 135 may be arranged to manipulate the light distribution, colour of the light and the like. The fixtures 132 and the extended fixture 134 with light outcoupling structures 135 define the three-dimensional shape of the light distribution fibers 16 within the cover 130.

[0044] FIG. 6 shows a principal sketch of a cross-section of a second vehicle signaling light 200. The fiber light module 100 is similar as the fiber or light module discussed with respect to FIG. 2. Each fiber guiding tube 14 is in this embodiment arranged between two guiding structures 18. The guiding structures 18 at the outer rim of the fiber light module 100 may support assembly of the second vehicle signaling light 200. The second vehicle signaling light 200 comprises a cover 130 which consists of two parts. The cover 130 can be opened such that the fiber light module 100 can be positioned on fixtures 132 which are in this embodiment arranged continuously along the rim of the stabilization structure 12. The fiber light module 100 is further supported by a support structure 136 which is arranged underneath the guiding structure 18 when the fiber light module 100 is placed on the lower part of the cover 130. The fiber light module is fixed by means of the upper part of the cover 130 which clamps the fiber light module 100, and especially the stabilization structure 12, by means of fixtures 132 and a support structure 136 which correspond to the fixtures 132 and support structure 136 of the lower part of the cover 130. Each flexible light distribution fiber 16 is therefore arranged in a defined position within the cover 130. Each light distribution fiber 16 is in this embodiment surrounded by a cavity. The cavity may be shaped to support the light distribution. Two or more light distribution fibers 16 may be surrounded by common cavity in alternative embodiments. The vehicle signaling light may further comprise localized light sources which may be arranged to provide light spots. The local light source or sources may, for example be arranged to emit light through the stabilization structure 12 (e.g. arranged in one of the support structures 136 or fixtures 132).

[0045] While the invention has been illustrated and described in detail in the drawings and the foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive.

[0046] From reading the present disclosure, other modifications will be apparent to persons skilled in the art. Such modifications may involve other features which are already known in the art and which may be used instead of or in addition to features already described herein.

[0047] Variations to the disclosed embodiments can be understood and effected by those skilled in the art, from a study of the drawings, the disclosure and the appended claims. In the claims, the word comprising does not exclude other elements or steps, and the indefinite article a or an does not exclude a plurality of elements or steps. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0048] Any reference signs in the claims should not be construed as limiting the scope thereof.

REFERENCE SIGNS

[0049] 12 stabilization structure [0050] 14 fiber guiding tube [0051] 16 light distribution fiber [0052] 18 guiding structure [0053] 19 mechanical coupling interface [0054] 22 light manipulation structure [0055] 100 fiber light module [0056] 110 electrical interface [0057] 120 light source [0058] 130 cover [0059] 132 fixture [0060] 134 extended fixture [0061] 135 light outcoupling structure [0062] 136 support structure [0063] 200 vehicle signaling light