Lighting device with reverse tapered heatsink
First Claim
Patent Images
1. A solid state lighting device comprising:
- a base end;
at least one solid state emitter; and
a heatsink disposed between the base end and the at least one solid state emitter, and arranged to dissipate heat generated by the at least one solid state emitter;
wherein;
the heatsink has a first end proximate to the base end, and has a first width at the first end;
the heatsink has a second end disposed between the base end and the at least one solid state emitter, and has a second width at the second end; and
at least a portion of the heatsink disposed between the first end and the second end has a third width that is greater than the second width.
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Abstract
A solid state lighting devices includes a heatsink having a first end arranged proximate to a base end, and a second end arranged between the first end and a solid state emitter, wherein at least a portion of the heatsink is wider at point intermediate the first end and the second end than the width of the heatsink at the second end. Such reverse angled heatsink reduces obstruction of light. A heatsink may include multiple fins and a heatpipe.
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Citations
35 Claims
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1. A solid state lighting device comprising:
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a base end; at least one solid state emitter; and a heatsink disposed between the base end and the at least one solid state emitter, and arranged to dissipate heat generated by the at least one solid state emitter; wherein; the heatsink has a first end proximate to the base end, and has a first width at the first end; the heatsink has a second end disposed between the base end and the at least one solid state emitter, and has a second width at the second end; and at least a portion of the heatsink disposed between the first end and the second end has a third width that is greater than the second width. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A solid state lighting device comprising:
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a base end; at least one solid state emitter; and a heatsink disposed between the base and the at least one solid state emitter, and arranged to dissipate heat generated by the at least one solid state emitter; wherein the lighting device has a substantially central axis extending in a direction between the base end and an emitter mounting area in which the at least one solid state emitter is mounted; wherein the heatsink is arranged to permit unobstructed emission of light generated by the at least one solid state emitter according to each emission half-angle of greater than 90 degrees relative to the central axis around an entire lateral perimeter of the solid state lighting device. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification