Low profile light and accessory kit for the same

• US 9,568,181 B2
• Filed: 05/01/2015
• Issued: 02/14/2017
• Est. Priority Date: 10/05/2009
• Status: Active Grant

• Current Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Boomgaarden, Mark Penley, Balestracci, Michael, LeClair, Rick, Sun, Wei, Henderson, David, Sullivan, Shane
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US14/702,149
• Publication Number:
  US 20150300622A1
• Time in Patent Office: 655 Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21K 9/235 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 Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/62 using mixing chambers, e.g. housings with reflective walls
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21K 9/69 Details of refractors forming part of the light source
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21S 8/033 the surface being a wall or like vertical structure, e.g. building facade
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 17/007 with provision for shipment or storage
• CPC Class Codes: F21V 21/02 Wall, ceiling, or floor bases; Fixing pendants or arms to the bases F21V21/08 takes precedence; bases for movable standing lamps F21V21/06
• CPC Class Codes: F21V 21/04 Recessed bases
• CPC Class Codes: F21V 21/047 Mounting arrangements with fastening means engaging the inner surface of a hole in a ceiling or wall, e.g. for solid walls or for blind holes
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 23/026 Fastening of transformers or ballasts
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/503 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 H01L33/64
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/71 : using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: F21V 29/713 : in direct thermal and mechanical contact of each other to form a single system
• CPC Class Codes: F21V 29/773 : the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/777 : the planes containing the fins or blades having directions perpendicular to the light emitting axis
• CPC Class Codes: F21V 7/0066 : specially adapted to cooperate with point like light sources; specially adapted to cooperate with light sources the shape of which is unspecified F21V7/16 - F21V7/30 take precedence
• CPC Class Codes: F21V 7/04 : Optical design
• CPC Class Codes: F21Y 2101/00 : Point-like light sources
• 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 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.

Claims

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.