Indirect illumination taillamp assembly for a vehicle

• US 6,280,480 B1
• Filed: 10/27/1999
• Issued: 08/28/2001
• Est. Priority Date: 10/30/1998
• Status: Expired due to Term

• Current Assignee: Ventra Greenwich Holdings Corp.
• Original Assignee: Meridian Automotive Systems, Inc.
• Inventors: Tuttle, Darin D., Cogswell, Marc R.
• Primary Examiner(s): Cariaso, Alan
• Assistant Examiner(s): DELGIZZI, RONALD ERNEST
• Application Number:
  US09/428,062
• Time in Patent Office: 671 Days
• Field of Search: 362/518, 362/545, 362/241, 362/247, 362/245, 362/800
• US Class Current: 362/518
• CPC Class Codes: B60Q 1/2607 comprising at least two indicating lamps
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/30 characterised by reflectors
• CPC Class Codes: F21S 43/40 characterised by the combination of reflectors and refractors
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A taillamp assembly for a vehicle is provided which comprises a housing having a first reflector and a second reflector and a lens mounted to the housing juxtaposed to the first and second reflectors. The lens preferably has first and second optic regions in register with the first and second reflectors. A lamp carrier is mounted to one of the housing and the lens and between the housing and the lens and has first and second sets of interconnected light-emitting semiconductor devices. The sets of light-emitting semiconductor devices are directed at a corresponding reflector and are electrically independent from one another. The first and second sets of light-emitting semiconductor devices can thereby be independently actuated to emit light toward the corresponding first and second reflectors and, in turn, outwardly through the lens. In another aspect, the taillamp assembly includes an optical unit for focusing the light from the light-emitting semiconductor devices to an area within the outer periphery of a reflector.

Claims

1. A taillamp assembly for a vehicle comprising:

a housing having a first reflector and a second reflector, the first and second reflectors configured to emit light in a generally common direction;

a lens mounted to the housing in an opposing relationship to the first and second reflectors, the lens has first and second optic regions in optical register with the first and second reflectors; and

a lamp carrier mounted to one of the housing and the lens and between the housing and the lens, the lamp carrier having first and second sets of interconnected light-emitting semiconductor devices, wherein the first set of light-emitting semiconductor devices is directed at the first reflector and the second set of light-emitting semiconductor devices is directed at the second reflector, and wherein the first and second sets of interconnected light-emitting semiconductor devices are electrically independent from one another;

whereby the first and second sets of light-emitting semiconductor devices can be independently actuated to emit light toward the corresponding first and second reflectors and, in turn, outwardly through the lens.

2. The taillamp assembly of claim 1 wherein the lamp carrier is positioned between the first and second reflectors.

3. The taillamp assembly of claim 2 wherein the lamp carrier comprises an elongated member with a Y-shaped cross section having a first leg mounting the first set of light-emitting semiconductor devices and a second leg mounting the second set of light-emitting semiconductor devices.

4. The taillamp assembly of claim 3 wherein at least one of the first and second reflectors has a serrated surface shaped to redirect the light received from the corresponding set of light-emitting semiconductor devices in a direction generally normal to the plane of the lens.

5. The taillamp assembly of claim 4 wherein the serrated surface of the at least one of the first and second reflectors comprises a plurality of serrations, each of the serrations comprising a leading surface and a trailing surface disposed at an obtuse angle with respect to one another whereby light received on the leading and trailing surfaces is reflected toward the lens.

6. The taillamp assembly of claim 5 and further comprising a focusing lens disposed between at least one of the first and second light-emitting semiconductor devices and the corresponding reflector for focusing light from the first and second light emitting semiconductor devices in a generally narrow band toward the corresponding reflector.

7. The taillamp assembly of claim 6 wherein the focusing lens is a fresnel lens.

8. The taillamp assembly of claim 1 wherein at least one of the first and second reflectors comprises a plurality of reflective surfaces offset with respect to each other, each reflective surface being in register with a light-emitting semiconductor device, whereby light emitted from each of the light-emitting semiconductor devices is directed onto an aligned reflective surface and, in turn, eminates from the reflective surface toward the lens in a set of relatively narrow bands of light.

9. The taillamp assembly of claim 1 wherein the lamp carrier comprises an elongated member with a Y-shaped cross section having a first leg mounting the first set of light-emitting semiconductor devices and a second leg mounting the second set of light-emitting semiconductor devices.

10. The taillamp assembly of claim 1 wherein at least one of the first and second reflectors has a reflective surface shaped to redirect the light received from the corresponding set of light-emitting semiconductor devices in a direction generally normal to the plane of the lens.

11. The taillamp assembly of claim 10 wherein the reflective surface of the at least one of the first and second reflectors comprises a plurality of reflective surfaces, each of the reflective surfaces comprising a leading surface and a trailing surface disposed at an obtuse angle with respect to one another whereby light received on the leading and trailing surfaces is reflected toward the lens.

12. The taillamp assembly of claim 1 and further comprising a focusing lens disposed between at least one of the first and second light-emitting semiconductor devices and the corresponding reflector for focusing light from the first and second light emitting semiconductor devices in a generally narrow band toward the corresponding reflector.

13. The taillamp assembly of claim 12 wherein the focusing lens is a fresnel lens.

14. A taillamp assembly for a vehicle comprising:

a housing having at least one reflector, the reflector having an outer periphery;

a lens mounted to the housing juxtaposed to the at least one reflector, the lens has at least one optic region in register with the at least one reflector;

a lamp carrier mounted to one of the housing and the lens and between the housing and the lens, the lamp carrier having at least one set of interconnected light-emitting semiconductor devices, wherein the at least one set of light-emitting semiconductor devices is directed at the at least one reflector; and

an optical unit mounted between the at least one set of light-emitting semiconductor devices and the at least one reflector to focus light from the at least one set of light-emitting semiconductor devices generally within the outer periphery of the at least one reflector.

15. The taillamp assembly of claim 14 wherein the optical unit comprises a focusing lens.

16. The taillamp assembly of claim 15 wherein the focusing lens comprises a fresnel lens.

17. The taillamp assembly of claim 16 the optical unit comprises a plurality of focusing lenses, each focusing lens in register with one of the light-emitting semi-conductor devices of the at least one set thereof, wherein each focusing lens focuses the light from the light-emitting semiconductor device within the outer periphery of the at least one reflector.

18. The taillamp assembly of claim 17 wherein each focusing lens focuses the light from each of the light-emitting semi-conductor device into a relatively narrow band.

19. The taillamp assembly of claim 18 wherein the reflector comprises a plurality of reflective surfaces offset with respect to each other, each reflective surface being in register with a light-emitting semiconductor device, whereby light emitted from each of the light-emitting semiconductor devices is focused by the optical unit onto an aligned reflective surface and, in turn, eminates from the reflective surface toward the lens in a set of relatively narrow bands of light.

20. The taillamp assembly of claim 19 wherein the at least one reflector comprises a first reflector and a second reflector located in a spaced relationship to the first reflector.

21. The taillamp assembly of claim 20 wherein the lamp carrier is positioned between the first and second reflectors.

22. The taillamp assembly of claim 14 the optical unit comprises a plurality of focusing lenses, each focusing lens in register with one of the light-emitting semi-conductor devices of the at least one set thereof, wherein each focusing lens focuses the light from the light-emitting semiconductor device within the outer periphery of the at least one reflector.

23. The taillamp assembly of claim 22 wherein each focusing lens focuses the light from each of the light-emitting semi-conductor device into a relatively narrow band.

24. The taillamp assembly of claim 14 wherein the at least one reflector comprises a plurality of reflective surfaces offset with respect to each other, each reflective surface being in register with a light-emitting semiconductor device, whereby light emitted from each of the light-emitting semiconductor devices is focused by the optical unit onto an aligned reflective surface and, in turn, eminates from the reflective surface toward the lens in a set of relatively narrow bands of light.

25. The taillamp assembly of claim 14 wherein the at least one reflector comprises a first reflector and a second reflector located in a spaced relationship to the first reflector.

26. The taillamp assembly of claim 25 wherein the lamp carrier is positioned between the first and second reflectors.