LED luminaire

• US 8,376,582 B2
• Filed: 03/26/2010
• Issued: 02/19/2013
• Est. Priority Date: 03/18/2009
• Status: Expired due to Fees

• Current Assignee: Philips Lighting Holding BV (Signify N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Catone, Robert, Oldani, Charles S., Hammer, Robert F., Stout, Timothy A., Kloepple, Robert
• Primary Examiner(s): Truong, Bao Q
• Application Number:
  US12/748,022
• Publication Number:
  US 20110013397A1
• Time in Patent Office: 1,061 Days
• Field of Search: 36224902-24907, 362/373, 362/372, 362/294, 362/285, 362/289, 362/418, 362/430, 362/523, 362/800
• US Class Current: 362/249.03
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 19/0055 by screwing
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 5/007 Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane combination of two or more refractors F21V5/008
• CPC Class Codes: F21V 5/08 producing an asymmetric light distribution
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A luminaire having a plurality of LED boards mounted within a housing is provided. Each LED board has at least one light emitting diode mounted thereon and an axis extending from a first end of the board to a second end of the board. Each LED board is adjusted about its respective axis to an orientation that is unique from at least two other LED boards.

Claims

1. A cobra head LED luminaire comprising:

a cobra head housing having a top housing portion and a lens frame assembly having a lens frame supporting a lens;

wherein said lens frame generally defines a first plane when said lens frame assembly is in an installed position;

a LED support structure maintained within said cobra head housing and coupled to said cobra head housing;

a first arcuate bracket outwardly extending from said LED support structure and a second arcuate bracket outwardly extending from said LED support structure;

at least one LED board with optical lenses extending between said first bracket and said second bracket, said LED board with optical lenses having a plurality of LEDs paired with an optical lens thereon;

at least one LED board without optical lenses extending between said first bracket and said second bracket, said LED board without optical lenses having a plurality of LEDs not paired with an optical lens thereon;

wherein said first arcuate bracket and said second arcuate bracket allow said at least one LED board with optical lenses and said at least one LED board without optical lenses to be fixedly attached in an upward orientation or a downward orientation;

wherein in said upward orientation said first arcuate bracket and said second arcuate bracket extend upwardly from said LED support structure toward said top housing portion and wherein said at least one LED board with optical lenses and said at least one LED board without optical lenses are inwardly oriented to provide cross light output; and

wherein in said downward orientation said first arcuate bracket and said second arcuate bracket extend downwardly from said LED support structure away from said top housing portion and said at least one LED board with optical lenses and said at least one LED board without optical lenses are outwardly oriented to provide divergent light output.

2. The cobra head LED luminaire of claim 1, wherein said lens is a sag lens.

3. The cobra head LED luminaire of claim 1, wherein said lens is a flat lens.

4. The cobra head LED luminaire of claim 1, wherein a plurality of said optical lens have a full distribution angle of between forty degrees and sixty degrees.

5. The cobra head LED luminaire of claim 4, wherein central light output axes of said LEDs paired with an optical lens are at a forty to sixty degree angle with respect to central light output axes of said LEDs not paired with an optical lens.

6. The cobra head LED luminaire of claim 5, wherein central light output axes of said LEDs paired with an optical lens and central light output axes of said LEDs not paired with an optical lens are aimed at a forward tilt angle of five to fifteen degrees with respect to said first plane.

7. The cobra head LED luminaire of claim 6, wherein a central axis of said at least one LED board with optical lenses is not coplanar with a central axis of said at least one LED board without optical lenses.

8. A LED luminaire comprising:

a housing having a top housing portion and a lens frame assembly having an adjustable lens frame supporting a lens;

wherein said lens frame assembly is adjustable between an open position and a closed position;

wherein said lens frame generally defines a first plane when said lens frame assembly is in said closed position;

a LED support plate coupled to said housing;

said LED support plate having an opening therethrough, an LED support plate rim along a periphery thereof, and a downward facing surface facing downward and away from said top housing portion;

wherein the periphery of said LED support plate generally corresponds to the periphery of said lens;

at least two brackets coupled to said LED support plate and extending away from said LED support plate in spaced relation to one another;

a plurality of downwardly aimed interior LEDs and a plurality of downwardly aimed exterior LEDs mounted between said brackets in a generally arcuate arrangement;

each of said interior LEDs and said exterior LEDs having a central LED light output axis;

heat dissipating structure in thermal connectivity with said interior LEDs and said exterior LEDs;

a plurality of non-bending optical pieces in cooperation with at least some of said exterior LEDs and having a full distribution angle of forty degrees to sixty degrees;

wherein said LED light output axis of said interior LEDs is at a sideways tilt angle of between seventy three and eighty seven degrees with respect to said first plane;

wherein said LED light output axis of said exterior LEDs is at a sideways tilt angle of between eighteen degrees and thirty three degrees with respect to said first plane;

wherein said LED light output axis of said interior LEDs and said LED light output axis of said exterior LEDs are at a forward tilt angle of between eighty-seven degrees and seventy-three degrees with respect to said first plane.

9. The luminaire of claim 8, wherein said brackets extend upwardly from said LED support plate toward said top housing portion and wherein each of said interior LEDs and said exterior LEDs is adjusted inwardly.

10. The luminaire of claim 8, wherein said brackets extend downwardly from said LED support plate toward said top housing portion and wherein each of said interior LEDs and said exterior LEDs is adjusted outwardly.

11. The luminaire of claim 8, wherein an exterior LED board supports a plurality of said exterior LEDs.

12. The luminaire of claim 8, further comprising a gasket compressed between said LED support plate and said lens frame assembly when said lens frame assembly is in said closed position.

13. The luminaire of claim 12, wherein said LED support plate, said heat dissipating structure, and said lens cooperate to form a substantially sealed optical chamber.

14. A LED luminaire comprising:

a housing having a top housing portion and a hingedly adjustable lens frame assembly;

said lens frame assembly having a lens frame supporting a lens;

an LED structure within said housing, said LED structure including;

a LED support plate coupled to said housing;

said LED support plate defining a first plane and having a downward facing surface facing downward and away from said top housing portion;

wherein said lens frame and said lens are hingeable with respect to said plate between an open position and a closed position;

a gasket compressed between said plate and said lens frame assembly when said lens frame assembly is in said closed position;

said gasket generally defining a first plane;

two brackets coupled to said plate and extending away from said plate and said top housing portion in spaced relation to one another;

two interior LED boards and two exterior LED boards;

said interior LED boards and said exterior LED boards mounted between said brackets in an arcuate relationship with respect to said first plane, each of said interior LED boards and said exterior LED boards having a first end and a second end opposite said first end, an axis extending from said first end to said second end, a front surface extending from said first end to said second end, a rear surface opposite said front surface, and a plurality of light emitting diodes on said front surface;

two exterior heatsinks, each of said exterior heatsinks in thermal connectivity with a single of said exterior LED boards;

two interior heatsinks, each of said interior heatsinks in thermal connectivity with a single of said interior LED boards;

a plurality of optical pieces on each of said exterior boards, each of said optical pieces paired with a single of said light emitting diodes;

wherein each said interior LED board is adjusted about its respective said axis between five degrees and fifteen degrees with respect to said first plane;

wherein each said exterior LED board is adjusted about its respective said axis between sixty and seventy degrees with respect to said first plane;

wherein each said axis of said interior LED boards and said exterior LED boards are at a forward tilt angle of between five degrees and fifteen degrees with respect to said first plane;

and wherein each of said optical pieces has a full distribution angle of between forty degrees and sixty degrees.

15. The luminaire of claim 14, wherein said LED luminaire produces an IES cutoff type III distribution.

16. The luminaire of claim 14, wherein each of said optical pieces is non-bending and includes a collimator lens.

17. The luminaire of claim 14, wherein said LED support plate contains an opening therethrough.

18. The luminaire of claim 17, wherein each of said interior heatsinks extends rearward from said rear surface of a corresponding of said interior LED boards toward said opening and wherein each of said exterior heat sinks extends rearward from said rear surface of a corresponding of said exterior LED boards toward said opening.

19. The luminaire of claim 18, wherein each of said interior heatsinks is coupled to one of said exterior heatsinks.

20. The luminaire of claim 19, wherein each of said exterior heatsinks is coupled to a protrusion extending downwardly from said LED support plate.

21. The luminaire of claim 20, wherein said LED support plate is coupled to said lens frame assembly.