Center high mounted stop lamp including leds and tir lens

• US 20050169002A1
• Filed: 02/05/2003
• Published: 08/04/2005
• Est. Priority Date: 02/06/2002
• Status: Active Grant

• Current Assignee: ODELO GmbH (Bayraktarlar Holding AS)
• Original Assignee: Schefenacker Vision Systems USA Incorporated (The Sumi Motherson Group)
• Inventors: Steen, Ronald L, Lucas, Kyle P., McKittrick, Charles D., Dymond, Richard A.
• Granted Patent: US 7,374,322 B2
• Time in Patent Office: Days
• US Class Current: 362/487
• CPC Class Codes: B60Q 1/2623 Details of the fastening means
• CPC Class Codes: B60Q 1/263 Snap-in fasteners
• CPC Class Codes: B60Q 1/302 mounted in the vicinity, e.g. in the middle, of a rear window
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/195 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 43/237 rod-shaped
• CPC Class Codes: F21S 43/241 of complex shape
• CPC Class Codes: F21S 43/249 with two or more light sources being coupled into the light guide
• CPC Class Codes: F21S 43/26 Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
• CPC Class Codes: F21V 17/101 permanently, e.g. welding, gluing or riveting
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A center high mounted stop lamp (12) including a plurality of LEDs (34) mounted on a printed circuit board (30). TIR lenses (40) are employed to focus the light from the LEDs (34) to give an even lighting appearance. The TIR lenses (40) include a prism (44) for directing the light in a desired direction. The circuit board (30) and lenses (40) are mounted in a housing (18) so that each LED (34) includes a separate lens (40) configured relative thereto to provide the desired collection and reflectance of the light. The housing (18) includes a plurality of posts (70) that extend through openings (48, 50) in the circuit board (30) and the lenses (40) to align the LEDs (34) to the lenses (40) relative to the housing (18).

Claims

1. A vehicle light for a vehicle, said vehicle light comprising:

a housing, said housing including at least one datum point;

an outer lens mounted to the housing and defining a cavity therebetween;

a printed circuit board (PCB) mounted to the housing, said printed circuit board including a plurality of spaced apart LEDs mounted thereto, said printed circuit board further including at least one alignment point aligned to the datum point; and

a lens assembly mounted to the housing, said lens assembly including a plurality of spaced apart lenses where a separate lens is mounted relative to each LED, said lens assembly further including at least one alignment point aligned with the at least one datum point or the at least one printed circuit board alignment point to provide the desired alignment between the TIR lenses and the LEDs.

2. The vehicle light according to claim 1 wherein the at least one datum point, the at least one printed circuit board alignment point and the at least one lens assembly alignment point are a plurality of datum points and alignment points.

3. The vehicle light according to claim 1 wherein the at least one datum point includes a post integrally molded to the housing and extending into the cavity, wherein the at least one printed circuit board alignment point is a hole and the at least one lens assembly alignment point is a hole where the post extends through the holes.

4. The vehicle light according to claim 3 wherein the at least one post is a plurality of posts and the at least one hole in the printed circuit board and the at least one hole in the lens assembly is a plurality of holes so that each post extends through an associated hole in the printed circuit board and the lens assembly.

5. The vehicle light according to claim 1 wherein the at least one printed circuit board alignment point includes a plurality of alignment slots formed in an outer edge of the printed circuit board, and wherein the at least one lens assembly alignment point includes a plurality of tabs where each tab is configured to be positioned within a slot to align the lens assembly to the printed circuit board.

6. The vehicle light according to claim 5 wherein the plurality of alignment slots have different lengths and the plurality of tabs have different lengths.

7. The vehicle light according to claim 1 wherein the lens assembly includes a prism, said prism operable to redirect the light emitted from the LEDs and focused by the lenses.

8. The vehicle light according to claim 1 wherein the lens assembly is a single molded plastic piece.

9. The vehicle light according to claim 1 wherein the lens assembly is a total internal reflecting lens assembly.

10. The vehicle light according to claim 1 wherein the lens assembly and the printed circuit board are heat staked or sonic welded to the housing.

11. The vehicle light according to claim 1 wherein the housing includes a plurality of energy directors, said energy directors being integrally molded with the housing and providing flowable plastic for securing the lens assembly to the housing in response to a sonic tack.

12. The vehicle light according to claim 1 further comprising an electrical connector, said electrical connector being integrally molded with the housing and including electrodes secured thereto.

13. The vehicle light according to claim 12 wherein the printed circuit board includes printed circuit board contacts, said printed circuit board contacts being electrically coupled to the housing electrodes by a friction engagement.

14. The vehicle light according to claim 1 wherein the housing includes a housing vent hole and the printed circuit board includes a printed circuit vent hole, said vent holes being in fluid communication with the cavity.

15. The vehicle light according to claim 1 wherein the light has a thickness of about 11 mm or less.

16. The vehicle light according to claim 1 further comprising a tape strip, said tape strip being mounted to a surface of the housing opposite to the printed circuit board, said tape strip operable to secure the vehicle light to the vehicle.

17. The vehicle light according to claim 1 wherein the housing and the outer lens are secured together by a technique selected from the group consisting of gluing, sonic welding and heat welding.

18. The vehicle light according to claim 1 wherein the vehicle light is a center high mounted stop lamp (CHMSL).

19. A vehicle light for a vehicle, said vehicle light comprising:

a housing, said housing including a plurality of posts integral therewith;

an outer lens mounted to the housing and defining a cavity therebetween;

a printed circuit board (PCB) mounted within the housing, said printed circuit board including a plurality of spaced apart LEDs mounted thereto, said printed circuit board further including a plurality of PCB holes where a separate PCB hole is aligned with each post; and

a total internal reflected (TIR) lens assembly mounted within the housing, said TIR lens assembly including a plurality of spaced apart TIR lenses where each LED includes a separate TIR lens mounted relative thereto, said TIR lens assembly further including a plurality of lens assembly holes where a separate lens assembly hole is aligned with each post and each PCB hole, each post extending through an associated PCB hole and lens assembly hole.

20. The vehicle light according to claim 19 wherein the TIR lens assembly includes a prism, said prism operable to redirect the light emitted from the LEDs and focused by the TIR lenses.

21. The vehicle light according to claim 19 wherein the housing includes a plurality of energy directors, said energy directors being integrally molded with the housing and providing flowable plastic for securing the lens assembly to the housing in response to a sonic tack.

22. The vehicle light according to claim 19 further comprising an electrical connector, said electrical connector being integrally molded with the housing and including electrodes secured thereto.

23. The vehicle light according to claim 22 wherein the printed circuit board includes printed circuit board contacts, said printed circuit board contacts being electrically coupled to the housing electrodes by a friction engagement.

24. A vehicle light for a vehicle, said vehicle light comprising:

a housing, said housing including at least one datum point;

an outer lens mounted to the housing and defining a cavity therein;

a printed circuit board (PCB) mounted to the housing, said printed circuit board including a plurality of spaced apart LEDs mounted thereto, said printed circuit board further including at least one alignment point aligned to the datum point; and

a total internal reflecting (TIR) lens assembly mounted to the housing, said TIR lens assembly including a plurality of spaced apart TIR lenses where each LED includes a separate TIR lens mounted relative thereto, said TIR lens assembly further including at least one alignment point aligned with the at least one datum point to provide the desired alignment between the TIR lenses and the LEDs.

25. The vehicle light according to claim 24 wherein the light has a thickness of about 11 mm or less.

26. The vehicle light according to claim 24 wherein the TIR lens assembly is a single molded plastic piece.

27. The vehicle light according to claim 24 wherein the housing includes a plurality of energy directors, said energy directors being integrally molded with the housing and providing flowable plastic for securing the lens assembly to the housing in response to a sonic tack.

28. The vehicle light according to claim 24 wherein the TIR lens assembly and the printed circuit board are heat staked or sonic welded to the housing.

29. The vehicle light according to claim 24 further comprising an electrical connector, said electrical connector being integrally molded with the housing and including electrodes secured thereto.

30. The vehicle light according to claim 29 wherein the printed circuit board includes printed circuit board contacts, said printed circuit board contacts being electrically coupled to the housing electrodes by a friction engagement.

31. The vehicle light according to claim 24 wherein the housing and the outer lens are secured together by a technique selected from the group consisting of gluing, sonic welding and heat welding.

32. The vehicle light according to claim 24 further comprising a tape strip, said tape strip being mounted to a surface of the housing opposite to the printed circuit board, said tape strip operable to secure the vehicle light to the vehicle.

33. The vehicle light according to claim 24 wherein the vehicle light is a center high mounted stop lamp (CHMSL).

34. A center high mounted stop lamp (CHMSL) for a vehicle, said CHMSL comprising:

a housing, said housing including a plurality of posts integral therewith and extending into the cavity;

an outer lens mounted to the housing and defining a cavity therein;

a printed circuit board (PCB) mounted within the housing, said printed circuit board including a plurality of spaced apart LEDs mounted thereto, said printed circuit board further including a plurality of PCB holes where a separate PCB hole is aligned with each post;

a total internal reflecting (TIR) lens assembly mounted within the housing, said TIR lens assembly including a plurality of spaced apart TIR lenses where each LED includes a separate TIR lens mounted relative thereto, said lens assembly including a plurality of alignment tabs for aligning the lens assembly to the printed circuit board; and

an electrical connector, said electrical connector being integrally molded with the housing and including electrodes secured thereto.

35. The CHMSL according to claim 34 wherein the printed circuit board includes a plurality of alignment slots formed in an outer edge of the printed circuit board, wherein the alignment tabs are positioned in the alignment slots to align the lenses to the LEDs.

36. The CHMSL according to claim 35 wherein the plurality of alignment slots have different lengths and the plurality of alignment tabs have different lengths.

37. The CHMSL according to claim 34 wherein the lens assembly further includes a plurality of lens assembly holes where a separate lens assembly hole is aligned with each post and each PCB hole so that each post extends through an associated PCB hole and lens assembly hole.

38. The CHMSL according to claim 34 wherein the lens assembly includes a prism that is operable to redirect light emitted from the LEDs and focused by the TIR lenses.

39. The CHMSL according to claim 34 wherein the printed circuit board includes printed circuit board contacts, said printed circuit board contacts being electrically coupled to the housing electrodes by a friction engagement.

40. The CHMSL according to claim 34 wherein the housing includes a plurality of energy directors, said energy directors being integrally molded with the housing and providing flowable plastic for securing the lens assembly to the housing in response to a sonic tack.

41. The CHMSL according to claim 34 wherein the housing includes a housing vent hole and the printed circuit board includes a printed circuit vent hole, said vent holes being in fluid communication with the cavity.

42. The CHMSL according to claim 34 wherein the CHMSL has a thickness of about 11 mm or less.

43. The CHMSL according to claim 34 wherein the TIR lens assembly is a single molded plastic piece.

44. The CHMSL according to claim 34 further comprising a tape strip, said tape strip being mounted to a surface of the housing opposite to the printed circuit board, said tape strip operable to secure the CHMSL to the vehicle.

45. The CHMSL according to claim 34 wherein the TIR lens assembly and the printed circuit board are heat staked or sonic welded to the housing.

46. The CHMSL according to claim 34 wherein the housing and the outer lens are secured together by a technique selected from the group consisting of gluing, sonic welding and heat welding.

47. A vehicle light for a vehicle, said vehicle comprising:

a housing;

an outer lens mounted to the housing and defining a cavity therebetween;

a printed circuit board mounted to the housing, said printed circuit board including a plurality of spaced apart LEDs mounted thereto, said printed circuit board including a plurality of alignment slots formed in an outer edge of the printed circuit board; and

a lens assembly mounted to the housing, said lens assembly including a plurality of spaced apart lenses where each LED includes a separate lens mounted relative thereto, said lens assembly further including a plurality of alignment tabs that are positioned within the alignment slots of the printed circuit board to align the lenses to the LEDs.

48. The vehicle light according to claim 47 wherein the housing includes a plurality of energy directors, said energy directors being integrally molded with the housing and providing flowable plastic for securing the lens assembly to the housing in response to a sonic tack.

49. The vehicle light according to claim 47 further comprising an electrical connector, said electrical connector being integrally molded with the housing and including electrodes secured thereto.

50. The vehicle light according to claim 49 wherein the printed circuit board includes printed circuit board contacts, said printed circuit board contacts being electrically coupled to the housing electrodes by a friction engagement.

51. The vehicle light according to claim 47 wherein the housing includes a housing vent hole and the printed circuit board includes a printed circuit vent hole, said vent holes being in fluid communication with the cavity.

52. The vehicle light according to claim 47 wherein the light has a thickness of about 11 mm or less.

53. The vehicle light according to claim 47 wherein the vehicle light is a center high mounted stop lamp (CHMSL).