Low profile light and accessory kit for the same

Patent metadata

Field	Value
Publication number	US-9568181-B2
Application number	US-201514702149-A
Country	US
Kind code	B2
Filing date	May 1, 2015
Priority date	Oct 5, 2009
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A flushmount luminaire is configured to be flush mounted on a mounting surface. The flushmount luminaire includes a light source having a plurality of light emitting diodes (LEDs); 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; and, a power conditioner structurally configured and disposed to receive AC voltage from an electrical supply and to provide DC voltage to the plurality of LEDs. The combination heat spreader and heat sink has 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 flushmount luminaire to be flush mounted on the mounting surface.

First claim

What is claimed is:

1. A flushmount luminaire configured to be flush mounted on a mounting surface, comprising:
a light source comprising a plurality of light emitting diodes (LEDs);
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;
a power conditioner structurally configured and disposed to receive AC voltage from an electrical supply and to provide DC voltage to the plurality of LEDs;
the combination heat spreader and heat sink having 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 flushmount luminaire to be flush mounted on the mounting surface.

2. The flushmount 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 flushmount luminaire of claim 1 , wherein:
the combination heat spreader and heat sink has a radial outer dimension.

4. The flushmount 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 flushmount luminaire of claim 1 , wherein:
the power conditioner comprises an electronic circuit board having electronic components configured to receive the AC voltage from the electrical supply line and to provide the DC voltage to the plurality of LEDs.

6. The flushmount 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 flushmount luminaire of claim 6 , 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.

8. The flushmount luminaire of claim 7 , wherein:
the reflector comprises an aperture in which the plurality of LEDs is disposed.

9. The flushmount luminaire of claim 8 , further comprising:
an inner optic disposed over the plurality of LEDs, between the plurality of LEDs and the outer optic, and covering the aperture.

10. The flushmount luminaire of claim 9 , wherein:
the inner optic is integrally formed with the reflector.

11. The flushmount luminaire of claim 9 , 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.

12. The flushmount 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.

13. The flushmount 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.

14. The flushmount luminaire of claim 9 , wherein:
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 H/D is equal to or less than 0.25.

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

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

17. The flushmount luminaire of claim 2 , further comprising:
an accessory kit comprising at least one of: a twist-on wire connector; a fastener; and, installation instructions.

Assignees

• Lightning Science Group Corp
• 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

• F21V29/503

  of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) · CPC title

• F21Y2105/10

  comprising a two-dimensional [2D] array of point-like light-generating elements · CPC title

• F21K9/235

  Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps (F21K9/238 takes precedence) · CPC title