Motor vehicle lighting and/or signaling device

Patent metadata

Field	Value
Publication number	US-9494291-B2
Application number	US-201314430008-A
Country	US
Kind code	B2
Filing date	Sep 20, 2013
Priority date	Sep 26, 2012
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A device for or passenger compartment lighting of a motor vehicle, which comprises a light source and a light guide, the light source extending in front of a main face of the guide, the light guide comprising at least one coupling face capable of reflecting into the light guide at least a part of the light emitted by the light source, and at least two decoupling faces at a distance from one another and arranged so as to reflect toward an output face of the light guide the light coming from the coupling face. This device furthermore comprises a reading light.

First claim

What is claimed is:

1. A device for signaling or passenger compartment lighting of a motor vehicle wherein said device comprises at least one light source and a light guide;
said at least one light source extending in front of a main face of said light guide;
said light guide comprising at least one coupling face capable of reflecting into said light guide at least a part of the light emitted by said at least one light source, and at least two decoupling faces at a distance from one another and arranged so as to reflect toward an output face of said light guide the light coming from said at least one coupling face;
said device further comprising at least one directional lighting source and at least one redirection component capable of directing the light emitted by said at least one directional lighting source to a focus of said at least one redirection component, wherein said focus is located outside said light guide, wherein there is substantially no propagation of the light by at least one total internal reflection zone.

2. The device as claimed in claim 1 , wherein said at least one light source has an emission axis perpendicular to said main face.

3. The device as claimed in claim 1 , wherein said at least one coupling face is arranged at one of the ends of said light guide.

4. The device as claimed in claim 1 , wherein said at least two decoupling faces comprise at least one relief capable of dispersing the light emitted by said at least one light source.

5. The device as claimed in claim 1 , wherein at least one of said at least two decoupling faces comprises at least one means for dispersing light.

6. The device as claimed in claim 1 , wherein said at least two decoupling faces are separated by said at least one total internal reflection zone arranged so that the light rays that reach it are totally reflected so as to remain coupled to said light guide.

7. The device as claimed in claim 1 , wherein each of said at least two decoupling faces is arranged so as to reflect the light rays reaching it, in such a way that bands are visible through said output face.

8. The device as claimed in claim 1 , which comprises a printed circuit parallel to said main face of said light guide.

9. The device as claimed claim 1 , wherein said light guide comprises a passage for mounting said at least one light source through said light guide.

10. The device as claimed in claim 1 , wherein said light guide comprises at least one isolated surface irregularity comprising a surface alteration on at least one of said main face, on at least two coupling faces, on at least one of said at least two decoupling faces or on said output face.

11. The device as claimed in claim 1 , wherein said output face and said main face extend on opposite sides of said light guide.

12. The device as claimed in claim 1 , wherein said output face and said main face extend on the same side of said light guide.

13. The device as claimed in claim 1 , wherein said at least one redirection component is interposed between said at least one directional lighting source and said light guide.

14. The device as claimed in claim 1 , wherein said at least one redirection component is arranged in such a way that it directs at least a part of the light of said at least one directional lighting source toward a zone located between said at least two decoupling faces.

15. The device as claimed in claim 1 , said light guide having a variable thickness decreasing transversely from one end to the other.

16. The device as claimed in claim 15 , said light guide not having a support at the end where the thickness is smallest.

17. The device as claimed in claim 1 , wherein said at least one redirection component comprises a generally ellipsoidal overall shape.

18. The device as claimed in claim 17 , wherein said generally ellipsoidal overall shape is inclined relative to a face of said at least one redirection component.

Assignees

• Valeo Vision

Inventors

• Sagna Boubacar
• De Lamberterie Antoine
• Tassy Pierre-Louis
• Debert Florestan

Classifications

• B60Q3/76

  for spotlighting, e.g. reading lamps (spotlighting on or for specific fittings B60Q3/20; spotlighting in mass transit vehicles B60Q3/44) · CPC title

• F21S43/14

  Light emitting diodes [LED] · CPC title

• F21S43/245

  emitting light from one or more of its major surfaces · CPC title

• F21S43/237

  rod-shaped · CPC title

• F21S43/249 Primary

  with two or more light sources being coupled into the light guide · CPC title