Low profile light

• US 10,641,476 B2
• Filed: 08/22/2018
• Issued: 05/05/2020
• 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: Maxik, Fredric S., Reynolds, Raymond A., Widjaja, Addy, Boomgaarden, Mark Penley, Soler, Robert R., Schellack, James Lynn
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US16/108,225
• Publication Number:
  US 20180356086A1
• Time in Patent Office: 622 Days
• Field of Search: 362294
• 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 luminaire that includes a heat spreader, a heat sink diametrically outboard of the heat spreader, an optic retained by the heat spreader, a light source disposed on the front side of the heat spreader, and a power conditioner disposed on the heat spreader. The power conditioner is disposed on the same side of the heat spreader as the light source. The heat sink includes fins that alternate with adjacently disposed and radially oriented recesses.

Claims

1. A luminaire comprising:

a heat spreader;

a heat sink diametrically outboard of the heat spreader;

an optic retained by the heat spreader;

a light source disposed on a front side of the heat spreader; and

a power conditioner disposed on the heat spreader;

wherein the power conditioner is disposed on the same side of the heat spreader as the light source; and

wherein the heat sink includes fins that alternate with adjacently disposed and radially oriented recesses.

2. The luminaire of claim 1 further including a trim defining a heat sinking thermal management element.

3. The luminaire of claim 1 wherein the light source comprises an LED chip package.

4. The luminaire of claim 1 wherein the heat sink fins are disposed on a back side of the luminaire.

5. The luminaire of claim 1 further comprising a reflector disposed in optical communication with the light source and the optic such that light emitted from the light source is reflected by the reflector toward the optic.

6. The luminaire of claim 1 wherein the heat spreader, the heat sink and the optic, in combination, have an overall height H and an overall outside dimension D such that a ratio of H/D is equal to or less than 0.25.

7. The luminaire of claim 1 wherein the heat sink forms a trim plate;

and wherein the trim plate and the optic, in combination, have an overall height H and an overall outside dimension D such that a ratio of H/D is equal to or less than 0.25.

8. The luminaire of claim 1 wherein the heat spreader, heat sink and optic are sized to cover a three inch opening.

9. The luminaire of claim 1 wherein the heat spreader, heat sink and optic are sized to cover a four inch opening.

10. The luminaire of claim 1 wherein the heat spreader, heat sink and optic are sized to cover a five inch opening.

11. The luminaire of claim 1 wherein the heat spreader, heat sink and optic are sized to cover a six inch opening.

12. A luminaire comprising:

a heat spreader;

a heat sink;

an optic retained by the heat spreader;

a light unit comprising a light source disposed on a front side of the heat spreader; and

a power conditioner disposed on the heat spreader;

wherein the heat spreader is integrally formed with the heat sink; and

wherein the heat sink is diametrically outboard of the heat spreader.

13. The luminaire of claim 12 wherein the light source comprises a plurality of LEDs defined as an LED chip package.

14. The luminaire of claim 12 further including a trim defining a heat sinking thermal management element.

15. The luminaire of claim 14 wherein the trim is mechanically separable from the light unit.

16. The luminaire of claim 12 wherein the combination of the heat spreader, the heat sink, and optic have an overall height of 1.5 inches and an outside dimension with a diameter of 7 inches.

17. The luminaire of claim 12 wherein the heat spreader, heat sink and optic are sized to cover a three inch opening.

18. The luminaire of claim 12 wherein the heat spreader, heat sink and optic are sized to cover a four inch opening.

19. The luminaire of claim 12 wherein the heat spreader, heat sink and optic are sized to cover a five inch opening.

20. The luminaire of claim 12 wherein the heat spreader, heat sink and optic are sized to cover a six inch opening.