Light fixtures and lighting devices

• US 8,789,975 B2
• Filed: 02/03/2012
• Issued: 07/29/2014
• Est. Priority Date: 05/07/2007
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Pickard, Paul Kenneth, Trott, Gary David
• Primary Examiner(s): Ward, John A
• Application Number:
  US13/365,618
• Publication Number:
  US 20120257384A1
• Time in Patent Office: 907 Days
• Field of Search: 362/373, 362/374, 362/375, 362/364, 362/367, 362/224, 362/294, 362/296.07, 362/382
• US Class Current: 362/294
• CPC Class Codes: F21S 8/02 of recess-mounted type, e.g. downlighters specially adapted for vehicle exteriors F21S41/00-F21S45/00
• CPC Class Codes: F21V 11/02 using parallel laminae or strips, e.g. of Venetian-blind type F21V11/06 takes precedence
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device comprises a heat sink, a housing mounted to and/or thermally coupled to the heat sink, a basket assembly attached to the housing, a solid state light emitter thermally coupled to the heat sink, and a baffle assembly attached to the housing. Also, a lighting device comprising a basket assembly and a baffle assembly. In some embodiments, the basket assembly comprises a first member defining a first opening, a second member, a space between the first and second members, and lenses in the opening and in the space. In some embodiments, the heat sink extends farther in a first direction in a first plane than a largest dimension of the housing in any plane which is parallel to the first plane. In some embodiments, at least one additional component (e.g., a power supply module or a junction box) is in contact with the heat sink element.

Claims

1. A lighting device, comprising:

a heat sink element;

an upper housing mounted to the heat sink element;

a basket assembly attached to the upper housing;

at least one solid state light emitter thermally coupled to the heat sink element; and

a baffle assembly attached to the upper housing.

2. A lighting device as recited in claim 1, wherein the baffle assembly comprises four side walls, and the four side walls define a substantially frustopyramidal shape.

3. A lighting device as recited in claim 1, wherein the baffle assembly comprises a plurality of side walls and an end region, the end region defining a light exit opening, the light exit opening defining a first substantially planar area, at least one of the side walls of the baffle assembly extending from the end region at an angle of between 18 degrees and 27 degrees.

4. A lighting device as recited in claim 3, wherein the baffle assembly comprises four side walls, and the four side walls define a substantially frustopyramidal shape.

5. A lighting device as recited in claim 1, wherein the baffle assembly comprises a plurality of side walls and an end region, the end region defining a light exit opening, the light exit opening defining a first substantially planar area, at least one of the side walls of the baffle assembly extending from the end region at an angle of less than 90 degrees relative to the first substantially planar area, and the light exit opening is substantially square.

6. A lighting device as recited in claim 1, wherein the at least one solid state light emitter is mounted on the heat sink.

7. A lighting device as recited in claim 1, wherein the lighting device further comprises a light emitter board mounted on the heat sink, the at least one solid state light emitter mounted on the light emitter board, the light emitter board thermally coupled to the heat sink, the at least one solid state light emitter thermally coupled to the light emitter board.

8. A lighting device as recited in claim 7, wherein the basket assembly, the upper housing and the light emitter board together define a light mixing chamber.

9. A lighting device as recited in claim 1, wherein the at least one solid state light emitter is an LED.

10. A lighting device as recited in claim 1, wherein the lighting device comprises a plurality of solid state light emitters.

11. A lighting device as recited in claim 10, wherein each of the plurality of solid state light emitters is an LED.

12. A lighting device as recited in claim 1, wherein at least a portion of the upper housing is substantially frustopyramidal.

13. A lighting device as recited in claim 1, wherein the basket assembly comprises at least one frame member and at least one lens.

14. A lighting device as recited in claim 13, wherein the lighting device further comprises at least one diffusing film mounted on the lens.

15. A lighting device as recited in claim 1, wherein the basket assembly comprises at least a first frame, the first frame comprising at least one first frame member and at least one second frame member, the first frame member defining a first opening, at least one first lens in the first opening, at least one space between the first frame member and the second frame member, at least one second lens in the space.

16. A lighting device as recited in claim 1, wherein the lighting device further comprises at least one additional component in contact with the heat sink element.

17. A lighting device as recited in claim 16, wherein the at least one additional component comprises at least one element selected from among a power supply module and a junction box.

18. A lighting device, comprising:

a basket assembly;

at least one solid state light emitter; and

a baffle assembly,

the basket assembly comprising at least a first frame,

the first frame comprising at least one first frame member and at least one second frame member,

the first frame member defining a first opening, at least one first lens in the first opening,

at least one space between the first frame member and the second frame member, at least one second lens in the space.

19. A lighting device, comprising:

an upper housing; and

a basket assembly;

the basket assembly comprising at least a first frame,

the first frame comprising at least one first frame member and at least one second frame member,

the first frame member defining a first opening, at least one first lens in the first opening,

at least one space between the first frame member and the second frame member, at least one second lens in the space.

20. A lighting device as recited in claim 19, wherein the lighting device further comprises at least one light emitter.