Low profile light and accessory kit for the same

Patent metadata

Field	Value
Publication number	US-9890941-B2
Application number	US-201615381605-A
Country	US
Kind code	B2
Filing date	Dec 16, 2016
Priority date	Oct 5, 2009
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

A luminaire comprising a light source comprising a plurality of light emitting diodes (LEDs) and a combination heat spreader and heat sink disposed in thermal communication with the light source such that the combination heat spreader and heat sink facilitates transfer of heat away from the LEDs. The combination heat spreader and heat sink have an outer dimension that is larger than an opening defined by a nominally sized can light fixture and an opening defined by a nominally sized electrical junction box. A back surface of the combination heat spreader and heat sink is configured to permit the luminaire to be flush mounted on the mounting surface.

First claim

What is claimed is:

1. A luminaire comprising:
a light source comprising a plurality of light emitting diodes (LEDs); and
a combination heat spreader and heat sink disposed in thermal communication with the light source such that the combination heat spreader and heat sink facilitates transfer of heat away from the LEDs;
wherein the combination heat spreader and heat sink have an outer dimension that is larger than an opening defined by a nominally sized can light fixture and an opening defined by a nominally sized electrical junction box; and
wherein a back surface of the combination heat spreader and heat sink is configured to permit the luminaire to be flush mounted on the mounting surface.

2. The luminaire of claim 1 wherein a back surface of the heat spreader is substantially planar with a back surface of the heat sink.

3. The luminaire of claim 1 wherein the combination heat spreader and heat sink has a radial outer dimension.

4. The luminaire of claim 1 wherein the heat spreader and the heat sink are integrally formed as a single one-piece base such that a heat flow path between the heat spreader and the heat sink is continuous and uninterrupted.

5. The luminaire of claim 1 further comprising a power conditioner comprising an electronic circuit board having electronic components configured to receive AC voltage from an electrical supply line and to provide DC voltage to the plurality of LEDs.

6. The luminaire of claim 5 wherein the power conditioner is disposed on a same side of the heat spreader as the plurality of LEDs.

7. The luminaire of claim 1 wherein the heat sink is structurally configured to be disposed completely external of the can light fixture and the electrical junction box.

8. The luminaire of claim 1 further comprising an outer optic disposed in optical communication with the plurality of LEDs; wherein the combination heat spreader and heat sink and the outer optic are structurally configured and disposed to cover an opening defined by the nominally sized can light fixture and cover an opening defined by the nominally sized electrical junction box.

9. The luminaire of claim 8 wherein the combination heat spreader and heat sink, and the outer optic in further combination, have an overall height H and an overall outside dimension D such that the ratio of HID is equal to or less than 0.25.

10. The luminaire of claim 1 further comprising standoffs disposed on a back surface of the luminaire configured to promote air movement between the luminaire and the mounting surface.

11. The luminaire of claim 1 further comprising:
an outer optic disposed in optical communication with the plurality of LEDs; and
a reflector disposed between the power conditioner and the outer optic so as to cover the power conditioner from view from an outer side of the outer optic.

12. The luminaire of claim 11 wherein the reflector comprises an aperture in which the plurality of LEDs is disposed.

13. The luminaire of claim 12 further comprising an inner optic disposed over the plurality of LEDs, between the plurality of LEDs and the outer optic, and covering the aperture.

14. The luminaire of claim 13 wherein the inner optic is integrally formed with the reflector.

15. The luminaire of claim 13 wherein the inner optic is configured to provide at least one of color mixing, diffusing, and color-temperature adjustment of light emitting from the plurality of LEDs.

16. The luminaire of claim 1 wherein the combination heat spreader and heat sink comprises at least two mounting holes for securing the luminaire to a nominally sized electrical junction box.

17. The luminaire of claim 1 further comprising an accessory kit comprising at least one of a twist-on wire connector, a fastener, and installation instructions.

Assignees

• Lighting Science Group Corp

Inventors

• Boomgaarden Mark Penley
• Balestracci Michael
• Leclair Rick
• Sun Wei
• Henderson David
• Sullivan Shane

Classifications

• F21K9/20

  Light sources comprising attachment means · CPC title

• F21Y2101/00

  Point-like light sources · CPC title

• F21V29/777

  the planes containing the fins or blades having directions perpendicular to the light emitting axis · CPC title

• F21S8/04

  intended only for mounting on a ceiling or the like overhead structures (F21S8/02 takes precedence; {details of ceiling bases F21V21/03}) · CPC title

• F21K9/62

  using mixing chambers, e.g. housings with reflective walls · CPC title