Low profile light and accessory kit for the same

• US 8,672,518 B2
• Filed: 05/21/2012
• Issued: 03/18/2014
• 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:
  US13/476,388
• Publication Number:
  US 20120262921A1
• Time in Patent Office: 666 Days
• Field of Search: 362/147, 362/148, 362/150, 362/404, 362/294, 362/373, 362/365
• US Class Current: 362/294
• 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 includes a heat spreader; a heat sink; an LED light source; a power supply; an electrical supply line having a first end connected to the power supply, and a second end connected to a plug-in connector; and, an optic securely retained relative to the heat spreader or heat sink. An accessory kit includes a first pre-wired jumper including a pair of insulated electrical wires having a first plug-in connector electrically connected at one end and an Edison base electrically connected at the other end; and/or, a second pre-wired jumper including a pair of insulated electrical wires having a second plug-in connector electrically connected at one end and unconnected wire ends at the other end. The plug-in connector of the first pre-wired jumper and the second pre-wired jumper are each configured to electrically engage with the plug-in connector of the electrical supply line.

Claims

1. A luminaire and accessory kit in combination, the combination comprising:

a luminaire, comprising;

a heat spreader;

a heat sink disposed in thermal communication with the heat spreader;

a light source comprising a plurality of light emitting diodes (LEDs) disposed in thermal communication with the heat spreader;

a power supply electrically connected to the light source;

an electrical supply line having a first end connected to the power supply, and a second end connected to a plug-in connector; and

, an optic disposed in optical communication with the LEDs; and

an accessory kit, comprising;

at least one of;

a first pre-wired jumper comprising a pair of insulated electrical wires having a first plug-in connector electrically connected at one end and an Edison base electrically connected at the other end; and

, a second pre-wired jumper comprising a pair of insulated electrical wires having a second plug-in connector electrically connected at one end and cut wire ends at the other end;

wherein the plug-in connector of the first pre-wired jumper and the second pre-wired jumper are each configured to electrically engage with the plug-in connector of the electrical supply line.

2. The combination of claim 1, wherein the accessory kit includes both the first pre-wired jumper and the second pre-wired jumper.

3. The combination of claim 1, wherein the heat sink is substantially ring-shaped, and is disposed around and coupled to an outer periphery of the heat spreader.

4. The combination 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 the ratio of H/D is equal to or less than 0.25.

5. The combination of claim 1, wherein the heat spreader, the heat sink and the optic, in combination, are so dimensioned as to cover:

an opening defined by a nominally sized four-inch can light fixture; and

, an opening defined by a nominally sized four-inch electrical junction box.

6. The combination of claim 1, wherein the LEDs are disposed on the heat spreader, the heat spreader being configured to dissipate heat from the LEDs.

7. The combination of claim 1, wherein the accessory kit further comprises a set of springs, each spring having a first portion configured to securely engage with the luminaire, and a second portion configured to deflect and slidably engage with an interior surface of a can-type light fixture.

8. The combination of claim 7, wherein each spring of the set of springs is formed from flat stock spring steel.

9. The combination of claim 1, wherein the heat spreader and the heat sink in combination define a base, wherein the optic is securely retained by the base via a snap-fit engagement between the optic and the base.

10. The combination of claim 1, wherein the heat spreader and the heat sink in combination define a base, wherein the base comprises engagement openings, wherein the optic comprises engagement tabs, wherein the optic is securely retained by the base by inserting respective ones of the engagement tabs into respective ones of the engagement openings and rotating the optic relative to a cylindrical axis of the base such that a portion of each engagement tab is securely retained by respective portions of the base.

11. The combination of claim 1, wherein:

the optic is securely retained relative to at least one of the heat spreader and the heat sink.

12. The combination of claim 1, wherein the accessory kit further comprises:

at least one twist-on wire connector.

13. The combination of claim 1, wherein the accessory kit further comprises:

at least one fastener configured to secure the luminaire to an electrical junction box.

14. The combination of claim 1, wherein the luminaire further comprises:

a reflector disposed in optical communication with the LEDs and the optic such that light emitted from the LEDs is reflected by the reflector toward the optic.

15. The combination of claim 14, wherein the reflector overlies the power supply such that the power supply is hidden from view when viewed from an outer optic side of the luminaire.