Roadway luminaire and methods of use

• US 7,828,456 B2
• Filed: 07/02/2008
• Issued: 11/09/2010
• Est. Priority Date: 10/17/2007
• Status: Active Grant

• Current Assignee: LSI Industries Incorporated
• Original Assignee: LSI Industries Incorporated
• Inventors: Boyer, John D., Vanden Eynden, James G.
• Primary Examiner(s): BRUCE, DAVID VERNON
• Application Number:
  US12/166,536
• Publication Number:
  US 20090103288A1
• Time in Patent Office: 860 Days
• Field of Search: 362/153.1, 362/145, 362/225, 362/240, 362/241, 362/297, 362/301, 362/296.04, 362/431, 362/109
• US Class Current: 362/153.1
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 11/02 using parallel laminae or strips, e.g. of Venetian-blind type F21V11/06 takes precedence
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 7/0083 Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane combination of two or more reflectors F21V7/0025
• CPC Class Codes: F21V 7/04 Optical design
• CPC Class Codes: F21V 7/18 with provision for folding or collapsing
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2105/16 square or rectangular, e.g. for light panels
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y02B 20/72 in street lighting

Abstract

A lighting apparatus having a base member and a directional member are shown and described. The base member includes a first surface having a plurality of reflective elements extending therefrom. The base member also including a plurality of openings arranged in a pattern. Each openings is configured to receive a respective light source. The directional member has a portion of a reflective surface positioned relative to at least one opening to reflect light radiating from a lighting source disposed within the opening towards a portion of at least one of the reflective elements extending from the base member.

Claims

1. A lighting apparatus comprising:

a housing comprising a base;

a plurality of LEDs forming a column oriented in opposed directions ±

T; and

at least one reflector adjacent to at least one of the LEDs, the at least one reflector having a reflective surface facing the adjacent at least one LED and each reflective surface defining a plane oriented at an angle δ

of about 0°

to about −

20°

from perpendicular to the base for reflecting light emitted in the −

T direction toward the +T direction, wherein the at least one reflector comprises a plurality of reflectors, each oriented independently at any angle δ

.

2. The lighting apparatus according to claim 1 wherein two or more of the LEDs are affixed on or created in a single substrate.

3. The lighting apparatus according to claim 1 further including a reflective cover plate comprising a base having a plurality of openings registered with the plurality of LEDs.

4. The lighting apparatus according to claim 3 wherein the reflector is formed integrally with the cover plate.

5. The lighting apparatus according to claim 1 wherein δ

is about 0°

to about −

10°

.

6. The lighting apparatus according to claim 1 wherein one or more of the plurality of LEDs do not have a reflectors disposed adjacent thereto.

7. The lighting apparatus according to claim 1 wherein the reflector has a height h from a proximal edge to a distal edge, and wherein the plurality of rows of LEDs are spaced apart a distance s, and the ratio of h:

s is about 0.5-2;

1.

8. The lighting apparatus according to claim 1 wherein each LED comprising a wide-angle LED including a light-refracting optic lens that distributes a significant portion of the LED light in ±

Z direction and at an angle α

from nadir of at least about 50°

, and wherein the plurality of wide-angle LEDs are oriented on the planar base with the ±

Z direction oriented substantially along the ±

L direction.

9. The lighting apparatus according to claim 1 wherein each LED comprises a portion of a row of LEDs oriented in a ±

L direction which is oriented perpendicular to the ±

T direction.

10. A roadway lighting assembly for lighting a portion of roadway, the lighting assembly comprising:

a pole;

a housing comprising a base;

a plurality of LEDs forming a column oriented in opposed directions ±

T and substantially parallel to the surface of the roadway; and

at least one reflector adjacent to at least one of the LEDs, the at least one reflector having a reflective surface facing the adjacent at least one LED and each reflective surface defining a plane oriented at an angle δ

of about 0°

to about −

20°

from perpendicular to the roadway for reflecting light emitted in the −

T direction toward the +T direction.

11. The lighting apparatus according to claim 10 further including a reflective cover plate comprising a base having a plurality of openings registered with the plurality of LEDs.

12. The lighting apparatus according to claim 11 wherein the reflector is formed integrally with the cover plate.

13. The lighting apparatus according to claim 10 wherein δ

is about 0°

to about −

10°

.

14. The lighting apparatus according to claim 10 wherein the at least one reflector comprises a plurality of reflectors, each oriented independently at any angle δ

.

15. The lighting apparatus according to claim 10 wherein one or more of the plurality of LEDs do not have a reflectors disposed adjacent thereto.

16. The lighting apparatus according to claim 10 wherein the reflector has a height h from a proximal edge to a distal edge, and wherein the plurality of rows of LEDs are spaced apart a distance s, and the ratio of h:

s is about 0.5-2;

1.

17. The lighting apparatus according to claim 10 wherein each LED comprising a wide-angle LED including a light-refracting optic lens that distributes a significant portion of the LED light in ±

Z direction and at an angle α

from nadir of at least about 50°

, and wherein the plurality of wide-angle LEDs are oriented on the planar base with the ±

Z direction oriented substantially along the ±

L direction.

18. The lighting apparatus according to claim 10 wherein each LED comprises a portion of a row of LEDs oriented in a ±

L direction which is oriented perpendicular to the ±

T direction.

19. A lighting apparatus comprising:

a housing;

a plurality of lighting sources mounted within the housing;

at least one reflector having a reflective surface adjacent to at least one of the plurality of lighting sources; and

at least one directional member located adjacent to the at least one of the plurality of lighting sources to reflect at least some of the light radiating from the at least one of the plurality of lighting sources toward the at least one reflector, one or more of the plurality of lighting sources having no directional members located adjacent thereto.

20. The lighting apparatus of claim 19 wherein light exits the lighting apparatus only after reflecting off of at least one of the at least one reflector or the at least one directional member.

21. The lighting apparatus of claim 19 wherein the at least one directional member is located in front of the at least one lighting element.

22. The lighting apparatus of claim 19 wherein one or more of the plurality of lighting sources having no reflectors located adjacent thereto.

23. The lighting apparatus of claim 19 further comprising a base reflective member defining a plurality of openings at least one of which are in register with at least one of the plurality of lighting sources.

24. The lighting apparatus of claim 23 wherein the at least one directional member extends from the base reflective member.

25. The lighting apparatus of claim 23 wherein at least one reflector extends integrally from the base reflective member.

26. The lighting apparatus of claim 19 wherein the at least one directional member defines an elongated V.

27. The lighting apparatus of claim 19 wherein the at least one directional member is connected to the at least one reflector.

28. A luminaire comprising:

a plurality of lighting sources;

a plurality of longitudinal reflectors oriented substantially parallel to one another, wherein the reflectors are positioned between lighting sources to reflect light emitting therefrom;

a plurality of directional members, each oriented over one of the plurality of lighting sources; and

a base member defining a plurality of openings arranged in register with the plurality of lighting sources.

29. The luminaire of claim 28 wherein the plurality of directional members extends substantially perpendicular to the plurality of longitudinal reflectors.

30. The luminaire of claim 28 wherein each of the directional members passes through a portion of a respective set of reflectors such that a portion of a reflective surface of the directional members is positioned to reflect light radiating from a lighting source in a respective opening.

31. The luminaire of claim 28 wherein at least one directional member reflects light radiating from a lighting source towards a portion of at least one of the reflectors.

32. The luminaire of claim 28 wherein one or more of the plurality of lighting sources have no reflectors located adjacent thereto.

33. The luminaire of claim 28 wherein one or more of the plurality of lighting sources have no directional members located adjacent thereto.

34. The luminaire of claim 28 wherein one of the directional members defines an elongated V.

35. The luminaire of claim 28 wherein one of the directional members is connected to a longitudinal reflector.

36. A lighting apparatus comprising:

a housing comprising a base;

a plurality of LEDs forming a column oriented in opposed directions ±

T; and

at least one reflector adjacent to at least one of the LEDs, the at least one reflector having a reflective surface facing the adjacent at least one LED and each reflective surface defining a plane oriented at an angle δ

of about 0°

to about −

20°

from perpendicular to the base for reflecting light emitted in the −

T direction toward the +T direction, wherein each LED comprising a wide-angle LED including a light-refracting optic lens that distributes a significant portion of the LED light in ±

Z direction and at an angle α

from nadir of at least about 50°

, and wherein the plurality of wide-angle LEDs are oriented on the planar base with the ±

Z direction oriented substantially along the ±

L direction.

37. The lighting apparatus according to claim 36 wherein two or more of the LEDs are affixed on or created in a single substrate.

38. The lighting apparatus according to claim 36 further including a reflective cover plate comprising a base having a plurality of openings registered with the plurality of LEDs.

39. The lighting apparatus according to claim 38 wherein the reflector is formed integrally with the cover plate.

40. The lighting apparatus according to claim 36 wherein δ

is about 0°

to about −

10°

.

41. The lighting apparatus according to claim 36 wherein the at least one reflector comprises a plurality of reflectors, each oriented independently at any angle δ

.

42. The lighting apparatus according to claim 36 wherein one or more of the plurality of LEDs do not have a reflectors disposed adjacent thereto.

43. The lighting apparatus according to claim 36 wherein the reflector has a height h from a proximal edge to a distal edge, and wherein the plurality of rows of LEDs are spaced apart a distance s, and the ratio of h:

s is about 0.5-2;

1.

44. The lighting apparatus according to claim 36 wherein each LED comprises a portion of a row of LEDs oriented in a ±

L direction which is oriented perpendicular to the ±

T direction.

45. A lighting apparatus comprising:

a housing;

a plurality of lighting sources mounted within the housing;

a base reflective member defining a plurality of openings at least one of which are in register with at least one of the plurality of lighting sources;

at least one reflector having a reflective surface adjacent to at least one of the plurality of lighting sources; and

at least one directional member located adjacent to the at least one of the plurality of lighting sources to reflect at least some of the light radiating from the at least one of the plurality of lighting sources toward the at least one reflector.

46. The lighting apparatus of claim 45 wherein light exits the lighting apparatus only after reflecting off of at least one of the at least one reflector or the at least one directional member.

47. The lighting apparatus of claim 45 wherein the at least one directional member is located in front of the at least one lighting element.

48. The lighting apparatus of claim 45 wherein one or more of the plurality of lighting sources having no reflectors located adjacent thereto.

49. The lighting apparatus of claim 45 wherein one or more of the plurality of lighting sources having no directional members located adjacent thereto.

50. The lighting apparatus of claim 45 wherein the at least one directional member extends from the base reflective member.

51. The lighting apparatus of claim 45 wherein at least one reflector extends integrally from the base reflective member.

52. The lighting apparatus of claim 45 wherein the at least one directional member defines an elongated V.

53. The lighting apparatus of claim 45 wherein the at least one directional member is connected to the at least one reflector.

54. A luminaire comprising:

a plurality of lighting sources;

a plurality of longitudinal reflectors oriented substantially parallel to one another, wherein the reflectors are positioned between lighting sources to reflect light emitting therefrom; and

a plurality of directional members, each oriented over one of the plurality of lighting sources and extending substantially perpendicular to the plurality of longitudinal reflectors.

55. The luminaire of claim 54 further comprising a base member defining a plurality of openings arranged in register with the plurality of lighting sources.

56. The luminaire of claim 54 wherein each of the directional members passes through a portion of a respective set of reflectors such that a portion of a reflective surface of the directional members is positioned to reflect light radiating from a lighting source in a respective opening.

57. The luminaire of claim 54 wherein at least one directional member reflects light radiating from a lighting source towards a portion of at least one of the reflectors.

58. The luminaire of claim 54 wherein one or more of the plurality of lighting sources have no reflectors located adjacent thereto.

59. The luminaire of claim 54 wherein one or more of the plurality of lighting sources have no directional members located adjacent thereto.

60. The luminaire of claim 54 wherein one of the directional members defines an elongated V.

61. The luminaire of claim 54 wherein one of the directional members is connected to a longitudinal reflector.

62. A luminaire comprising:

a plurality of lighting sources;

a plurality of longitudinal reflectors oriented substantially parallel to one another, wherein the reflectors are positioned between lighting sources to reflect light emitting therefrom; and

a plurality of directional members, each oriented over one of the plurality of lighting sources and extending substantially perpendicular to the plurality of longitudinal reflectors, wherein one or more of the plurality of lighting sources have no directional members located adjacent thereto.

63. The luminaire of claim 62 further comprising a base member defining a plurality of openings arranged in register with the plurality of lighting sources.

64. The luminaire of claim 62 wherein the plurality of directional members extends substantially perpendicular to the plurality of longitudinal reflectors.

65. The luminaire of claim 62 wherein each of the directional members passes through a portion of a respective set of reflectors such that a portion of a reflective surface of the directional members is positioned to reflect light radiating from a lighting source in a respective opening.

66. The luminaire of claim 62 wherein at least one directional member reflects light radiating from a lighting source towards a portion of at least one of the reflectors.

67. The luminaire of claim 62 wherein one or more of the plurality of lighting sources have no reflectors located adjacent thereto.

68. The luminaire of claim 62 wherein one of the directional members defines an elongated V.

69. The luminaire of claim 62 wherein one of the directional members is connected to a longitudinal reflector.