Patent ID: 7794116
Filing Date: 2010-09-14
Classification: F21V,F21Y

Abstract:
1. A light emitting diode (LED) lamp, comprising: a first heat sink comprising a substrate and a plurality of first fins arranged on the substrate; a second heat sink comprising a base having opposite first and second faces, a plurality of second fins extending from lateral sides of the first face thereof, the second face of the base of the second heat sink being attached on the substrate of the first heat sink; an LED module mounted to the first face of the base of the second heat sink and located between the second fins extending from the lateral sides of the first face of the base of the second heat sink; wherein a plurality of channels each are defined between two neighboring first fins of the first heat sink along a first direction, a plurality of grooves extending through the first fins of the first heat sink and crossing with corresponding channels, the channels being divided into a plurality of parts separated from each other by the grooves.