LIGHTING DEVICES COMPRISING SOLID STATE LIGHT EMITTERS

• US 20110075422A1
• Filed: 09/25/2009
• Published: 03/31/2011
• Est. Priority Date: 09/25/2009
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: Cree Lighting Company (Ideal Industries Incorporated)
• Inventors: Wah, Ho Chin, Chan, Wai Kwan, VAN DE VEN, Antony Paul
• Granted Patent: US 8,777,449 B2
• Time in Patent Office: Days
• US Class Current: 362/249.02
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• 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 21/04 Recessed bases
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• 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 lighting device comprising a trim element, an electrical connector and at least one solid state light emitter, the lighting device weighing less than one kilogram. If current of about 12 watts (or in some cases about 15 watts, or in some cases not more than about 15 watts) is supplied to the electrical connector, the at least one solid state light emitter will illuminate so that the lighting device will emit white light of at least 500 lumens. Also, a lighting device that weighs less than one kilogram and can generate white light of at least 500 lumens using a current of not more than about 15 watts. Also, a lighting device for mounting in a recessed housing, comprising a unitary structure trim element that conducts heat away from at least one solid state light emitter and dissipates at least some of the heat outside of the recessed housing.

Claims

1. A lighting device, comprising:

a trim element;

an electrical connector; and

at least one solid state light emitter,

the lighting device weighing less than 750 grams,

wherein if current of about 12 watts is supplied to the electrical connector, the at least one solid state light emitter will illuminate so that the lighting device will emit white light of at least 500 lumens.

2. A lighting device as recited in claim 1, wherein the trim element and the at least one solid state light emitter are shaped and positioned to provide a shield angle of at least 15 degrees.

3. A lighting device as recited in claim 1, wherein the lighting device further comprises at least a first fixture element.

4. A lighting device as recited in claim 3, wherein the lighting device further comprises at least one structure that holds the trim element in position relative to the first fixture element.

5. A lighting device as recited in claim 1, if a current is supplied to the lighting device to cause the lighting device to emit light having a brightness of at least 500 lumens, the temperature of the at least one solid state light emitter would be maintained at or below a 25,000 hour rated lifetime junction temperature for the solid state light emitter in a 25°

C. surrounding environment.

6. A lighting device as recited in claim 1, wherein the current is AC current.

7. A lighting device as recited in claim 1, wherein at least one of the at least one solid state light emitter is mounted on the trim element.

8. A lighting device as recited in claim 1, wherein the trim element comprises at least a portion of a mixing chamber sub-assembly.

9. A lighting device as recited in claim 1, wherein the lighting device weighs less than 500 grams.

10. A lighting device, comprising:

a trim element;

an electrical connector; and

at least one solid state light emitter,

the lighting device weighing less than 750 grams,

wherein if current of about 15 watts is supplied to the electrical connector, the at least one solid state light emitter will illuminate so that the lighting device will emit white light of at least 500 lumens.

11. A lighting device, comprising:

a trim element;

an electrical connector; and

at least one solid state light emitter,

the lighting device weighing less than 750 grams,

wherein if current of not more than about 15 watts is supplied to the electrical connector, the at least one solid state light emitter will illuminate so that the lighting device will emit white light of at least 500 lumens.

12. A lighting device, comprising:

a trim element;

an electrical connector; and

at least one solid state light emitter,

the lighting device weighing less than 750 grams,

wherein the lighting device can generate white light of at least 500 lumens using a current of not more than about 15 watts.

13. A lighting device for mounting in a recessed housing, comprising:

a unitary structure trim element comprising a thermally conductive material and configured to extend from within the recessed housing through an aperture in the recessed housing and includes a flange element that extends beyond the aperture of the recessed housing and prevents insertion of the trim element fully within the recessed housing; and

at least one solid state light emitter mounted on the unitary structure trim element, wherein the trim element conducts heat away from the at least one solid state light emitter and dissipates at least some of the heat outside of the recessed housing.

14. A lighting device as recited in claim 13, wherein the lighting device exclusive of the recessed housing has a total mass of less than about 750 grams.

15. A lighting device as recited in claim 14, wherein the trim element defines an aperture of the lighting device that has a diameter of at least about 4.5 inches and a lumen output of at least about 575 lumens.