Lighting device with multi-chip light emitters, solid state light emitter support members and lighting elements

• US 8,508,116 B2
• Filed: 05/10/2010
• Issued: 08/13/2013
• Est. Priority Date: 01/27/2010
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Negley, Gerald H., Edmond, Mark, Pickard, Paul Kenneth
• Primary Examiner(s): Green, Tracie Y
• Application Number:
  US12/776,947
• Publication Number:
  US 20110182065A1
• Time in Patent Office: 1,191 Days
• Field of Search: 313498-512, 362/249.02, 362/84, 257/84
• US Class Current: 313/501
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21K 9/62 using mixing chambers, e.g. housings with reflective walls
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2105/12 characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting device in which a solid state light emitter in a first multi-chip light emitter is spatially offset relative to a solid state light emitter in a second multi-chip light emitter. A lighting device comprising first, second and third multi-chip light emitters, in which any solid state light emitter in the second multi-chip light emitter that is spatially offset relative to a first solid state light emitter on the first multi-chip light emitter by less than 10 degrees emits light of a hue that differs from the hue of light emitted by the first solid state light emitter by more than seven MacAdam ellipses. A solid state light emitter support member comprising a center region and at least first, second and third protrusions extending from the center region. A lighting device comprising at least a first housing member, and means for emitting substantially uniform light.

Claims

1. A lighting device comprising:

at least a first multi-chip light emitter and a second multi-chip light emitter,

the first multi-chip light emitter comprising at least a first solid state light emitter and a second solid state light emitter,

the second multi-chip light emitter comprising at least a third solid state light emitter and a fourth solid state light emitter,

the first solid state light emitter emitting light of a first hue,

the second solid state light emitter emitting light of a second hue,

the third solid state light emitter emitting light of a third hue,

the fourth solid state light emitter emitting light of a fourth hue,

the first hue differing from the third hue by fewer MacAdam ellipses than the number of MacAdam ellipses by which;

the first hue differs from the second hue,

the first hue differs from the fourth hue,

the second hue differs from the third hue,

the second hue differs from the fourth hue, or

the third hue differs from the fourth hue,

the first solid state light emitter spatially offset relative to the third solid state light emitter by at least 10 degrees.

2. A lighting device as recited in claim 1, wherein:

the first multi-chip light emitter comprises three BSY solid state light emitters and one red solid state light emitter, and

the second multi-chip light emitter comprises three BSY solid state light emitters and one red solid state light emitter.

3. A lighting device as recited in claim 1, wherein the first solid state light emitter is a BSY solid state light emitter.

4. A lighting device as recited in claim 3, wherein:

the first hue differs from the third hue by not more than seven MacAdam ellipses,

the first hue differs from the second hue by more than seven MacAdam ellipses,

the first hue differs from the fourth hue by more than seven MacAdam ellipses,

the second hue differs from the third hue by more than seven MacAdam ellipses,

the second hue differs from the fourth hue by more than seven MacAdam ellipses, and

the third hue differs from the fourth hue by more than seven MacAdam ellipses.

5. A lighting device as recited in claim 3, wherein:

the lighting device further comprises at least a third multi-chip light emitter

the third multi-chip light emitter comprises at least a fifth solid state light emitter and a sixth solid state light emitter,

the fifth solid state light emitter emits light of a fifth hue, and

the sixth solid state light emitter emits light of a sixth hue.

6. A lighting device as recited in, claim 3, wherein:

the lighting device further comprises at least a third multi-chip light emitter and a fourth multi-chip light emitter.

7. A lighting device as recited in claim 6, wherein each of the first, second, third and fourth multi-chip light emitters have similar layouts.

8. A lighting device as recited in claim 3, wherein:

the lighting device further comprises at least a third multi-chip light emitter, and

each of the first, second and third multi-chip light emitters comprises at least four solid state light emitters.

9. A lighting device as recited in claim 8, wherein each of the first, second and third multi-chip light emitters have similar layouts.

10. A lighting device as recited in claim 3, wherein the second solid state light emitter is a red solid state light emitter.

11. A lighting device as recited in claim 3, wherein the second solid state light emitter is a red solid state light emitter, the third solid state light emitter is a BSY solid state light emitter, and the fourth solid state light emitter is a red solid state light emitter.

12. A lighting device comprising:

at least a first multi-chip light emitter, a second multi-chip light emitter and a third multi-chip light emitter,

the first multi-chip light emitter comprising at least a first solid state light emitter, a second solid state light emitter, a third solid state light emitter and a fourth solid state light emitter,

the second multi-chip light emitter comprising at least a fifth solid state light emitter, a sixth solid state light emitter, a seventh solid state light emitter and an eighth solid state light emitter,

the third multi-chip light emitter comprising at least a ninth solid state light emitter, a tenth solid state light emitter, an eleventh solid state light emitter and a twelfth solid state light emitter,

the first solid state light emitter emitting light of a first hue,

the second solid state light emitter emitting light of a second hue,

the fifth solid state light emitter emitting light of a fifth hue,

the sixth solid state light emitter emitting light of a sixth hue,

the ninth solid state light emitter emitting light of a ninth hue,

the tenth solid state light emitter emitting light of a tenth hue,

the first hue differing from the fifth hue by not more than seven MaeAdam ellipses,

the first hue differing from the ninth hue by not more than seven MacAdam ellipses,

the fifth hue differing from the ninth hue by not more than seven MacAdam ellipses,

the first hue differing from each of the second hue, the sixth hue and the tenth hue by more than seven MacAdam ellipses,

the fifth hue differing from each of the second hue, the sixth hue and the tenth hue by more than seven MacAdam ellipses,

the ninth hue differing from each of the second hue, the sixth hue and the tenth hue by more than seven MacAdam ellipses,

any solid state light emitter in the second multi-chip light emitter that is spatially offset relative to the first solid state light emitter by less than 10 degrees having a hue that differs from the first hue by more than seven MacAdam ellipses.

13. A lighting device as recited in claim 12, wherein the first solid state light emitter is a BSY solid state light emitter.

14. A lighting device as recited in claim 13, wherein

any solid state light emitter in the second multi-chip light emitter that is spatially offset relative to the first solid state light emitter by less than 80 degrees has a hue that differs from the first hue by more than seven MacAdam ellipses.

15. A lighting device as recited in claim 13, wherein the lighting device comprises at least four multi-chip light emitters that have similar layouts.

16. A lighting device as recited in claim 15, wherein the fifth solid state light emitter is spatially offset by about 90 degrees relative to the first solid state light emitter.

17. A lighting device as recited in claim 15, wherein the fifth solid state light emitter is spatially offset by about 180 degrees relative to the first solid state light emitter.

18. A lighting device as recited in claim 13, wherein the second solid state light emitter is a red solid state light emitter, the fifth solid state light emitter is a BSY solid state light emitter, and the sixth solid state light emitter is a red solid state light emitter.

19. A lighting device comprising:

at least a first multi-chip light emitter and a second multi-chip light emitter,

the first multi-chip light emitter comprising at least a first solid state light emitter, a second solid state light emitter and a third solid state light emitter,

the second multi-chip light emitter comprising at least a fourth solid state light emitter, a fifth solid state light emitter and a sixth solid state light emitter,

the first solid state light emitter emitting light of a first hue,

the second solid state light emitter emitting light of a second hue,

the third solid state light emitter emitting light of a third hue,

the fourth solid state light emitter emitting light of a fourth hue,

the fifth solid state light emitter emitting light of a fifth hue,

the sixth solid state light emitter emitting light of a sixth hue,

the second hue differing from the first hue by not more than seven MacAdam ellipses,

the third hue differing from the first hue by more than seven MacAdam ellipses,

the fifth hue differing from the fourth hue by not more than seven MacAdam ellipses, and

the sixth hue differing from the fourth hue by more than seven MacAdam ellipses.

20. A lighting device as recited in claim 19, wherein the first solid state light emitter is a BSY solid state light emitter.

21. A lighting device as recited in claim 20, wherein the second solid state light emitter is a red solid state light emitter, the third solid state light emitter is a BSY solid state light emitter, and the fourth solid state light emitter is a red solid state light emitter.

22. A lighting device comprising:

at least a first multi-chip light emitter and a second multi-chip light emitter,

the first multi-chip light emitter comprising at least a first solid state light emitter and a second solid state light emitter,

the second multi-chip light emitter comprising at least a third solid state light emitter and a fourth solid state light emitter,

the first solid state light emitter emitting light of a hue that differs from the hue of light that is emitted by the second solid state light emitter,

the third solid state light emitter emitting light of a hue that differs from the hue of light that is emitted by the fourth solid state light emitter,

(1) the at least first and second solid state light emitters on the first multi-chip light emitter spatially arranged relative to one another,

(2) the at least third and fourth solid state light emitters on the second multi-chip light emitter spatially arranged relative to one another, and

(3) the at least first and second multi-chip light emitters spatially arranged relative to one another, to provide adequate color mixing of light emitted from the lighting device,

in which when the lighting device is supplied with electricity, the hue of each of 100 substantially square regions of equal surface area dividing a surface area of a beam of light emitted by the lighting device differs from the hue of each of the other of the 100 substantially square regions by not more than seven MacAdam ellipses, the surface area of the beam of light at a distance, along an axis perpendicular to an emission plane of the lighting device, of six times a diameter of a surface of the lighting device.

23. A lighting device as recited in claim 22, wherein the first solid state light emitter is a BSY solid state light emitter.

24. A lighting device as recited in claim 23, wherein the second solid state light emitter is a red solid state light emitter, the third solid state light emitter is a BSY solid state light emitter, and the fourth solid state light emitter is a red solid state light emitter.

25. A lighting device as recited in clam 23, wherein when the lighting device is supplied with electricity, the lighting device emits light having a CRI Ra of at least 80.