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Lighting device with reverse tapered heatsink

  • US 8,552,626 B1
  • Filed: 05/21/2013
  • Issued: 10/08/2013
  • Est. Priority Date: 06/04/2010
  • Status: Active Grant
First Claim
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1. A solid state lighting device comprising:

  • a base end;

    at least one solid state emitter;

    a light-transmissive cover arranged to cover the at least one solid state emitter and transmit at least a portion of emissions generated by the 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 comprises a first heatsink end and comprises a first width at the first heatsink end;

    the heatsink comprises a second heatsink end and comprises a second width at the second heatsink end;

    the base end is closer to the first heatsink end than to the second heatsink end;

    at least a portion of the heatsink disposed between the first heatsink end and the second heatsink end comprises a third width that is greater than the second width; and

    the heatsink comprises a maximum width dimension that is substantially equal to a corresponding maximum width dimension of the cover.

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