Vertical luminaire

• US 8,231,243 B1
• Filed: 09/15/2008
• Issued: 07/31/2012
• Est. Priority Date: 08/19/2008
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Boissevain, Chris, Garcia, Joseph
• Primary Examiner(s): Ward, John A
• Application Number:
  US12/210,834
• Time in Patent Office: 1,415 Days
• Field of Search: 362/217.02, 362/217.03, 362/217.04, 362/217.05, 362/235, 362/237, 362/241, 362/242, 362/243, 362/247, 362/249.02
• US Class Current: 362/241
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21S 8/088 with lighting device mounted on top of the standard, e.g. for pedestrian zones
• 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 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 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 21/116 Fixing lighting devices to arms or standards F21V21/002 takes precedence
• CPC Class Codes: F21V 23/026 Fastening of transformers or ballasts
• CPC Class Codes: F21V 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21W 2131/105 of arenas or the like
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A luminaire is provided with a housing having an attachment element and a LED mounting element. A plurality of LEDs are also provided and are supported by the LED mounting element of the housing. A plurality of reflectors are positioned proximal to the plurality of LEDs and reflect light emitted by the LEDs toward an illumination surface.

Claims

1. A luminaire, comprising:

a LED mounting surface;

a plurality of adjacent LED rows each containing at least one LED configured to emit a light output;

each said LED of each of said LED rows coupled to said LED mounting surface and oriented to direct a full width half maximum of said light output away from said LED mounting surface;

a plurality of louver reflectors each having a concave inner reflective surface;

each said louver reflector extending along one of said LED rows and positioned and configured to reflect light output from one of said plurality of LED rows and direct said reflected light downward below said luminaire to an illumination plane.

2. The luminaire of claim 1 wherein each said louver reflector redirects at least sixty percent of a full width half maximum of said light output from one of said plurality of LED rows.

3. The luminaire of claim 1 wherein each said louver reflector intersects at least ninety five degrees of said light output from one of said plurality of LED rows.

4. The luminaire of claim 2 wherein said concave inner reflective surface of each said louver reflector is positioned and configured to reflect light to said illumination plane in a type III illumination pattern.

5. The luminaire of claim 1 wherein each said LED row contains a plurality of LEDs.

6. The luminaire of claim 1 wherein a rear surface of each said louver reflector opposite said inner reflective surface is non-reflective.

7. The luminaire of claim 1 wherein said LED rows and said louver reflectors are spaced such that less than thirty-five degrees of said light output from each said LED row is incident upon any adjacent said louver reflector.

8. A luminaire, comprising:

a plurality of adjacent LED rows in a substantially parallel configuration with one another, each of said LED rows containing a plurality of LEDs configured to emit a light output;

each said LED oriented to direct a central axis of said light output in a direction substantially perpendicular to a first vertical plane;

a LED mounting surface supporting said LEDs;

a plurality of louver reflectors each having a concave inner reflective surface and positioned in a parallel configuration with one another;

each said louver reflector extending along one of said LED rows such that said concave inner reflective surface of each said louver reflector intersects at least one half of a full width half maximum of said light output of one of said LED rows and directs a majority of said intersected light downward below said luminaire to an illumination plane substantially perpendicular to said vertical plane.

9. The luminaire of claim 8 wherein a heat dissipation plate is coupled to said LED mounting surface.

10. The luminaire of claim 9 wherein a plurality of heat fins extend from said heat dissipation plate.

11. The luminaire of claim 10 wherein said heat fins extend into an elongated shaft, said elongated shaft formed by a housing.

12. The luminaire of claim 11 wherein a plurality of heat pipes are interposed between and in thermal contact with said mounting surface and said heat dissipation plate.

13. The luminaire of claim 12 wherein said heat pipes extend in a direction perpendicular to said LED rows.

14. The luminaire of claim 8 wherein each said louver reflector intersects at least sixty percent of said full width half maximum and directs said intersected light to said illumination plane.

15. A surface lighting luminaire, comprising:

a housing having an attachment element;

a plurality of adjacent LED rows coupled to said housing and lying in a first plane, each said LED row containing at least one LED configured to emit a light output;

each said LED oriented to direct a central axis of said light output away from said first plane;

a plurality of louver reflectors coupled to said housing, each said louver reflector mounted over one said LED row for redirection of a portion of said light output downward below said luminaire to an illumination plane.

16. The surface lighting luminaire of claim 15 wherein said LED rows are in thermal contact with a heat dissipation plate.

17. The surface lighting luminaire of claim 16 wherein a plurality of heat fins are coupled to said heat dissipation plate and project inside an elongated shaft extending through said housing.

18. The surface lighting luminaire of claim 15 further comprising a plurality of said housings.

19. The surface lighting luminaire of claim 18 wherein each said attachment element of each said housing is contoured to abut a support pole.

20. The ground lighting luminaire of claim 19 wherein each said attachment element is contoured to abut a square support pole.

21. The surface lighting luminaire of claim 18 wherein each said housing is contoured to allow four said housings to be placed about a single support pole.

22. The surface lighting luminaire of claim 18 wherein each said housing is individually electrically operable.