Patent ID: 7753560
Filing Date: 2010-07-13
Classification: F21K,F21V,F21Y,H01L

Abstract:
1. An LED lamp adapted for lighting purpose comprising: a hollow, cylindrical heat absorbing member with a through hole defined therein from top to bottom thereof; a lamp base secured to a bottom portion of the heat absorbing member, the lamp base being adapted for mounting the LED lamp to a lamp socket; a plurality of LED modules being mounted on an outer sidewall of the heat absorbing member, each of the LED modules comprising a printed circuit board and a plurality of LEDs mounted on the printed circuit board; a heat sink secured to a top portion of the heat absorbing member; and a plurality of heat pipes having evaporating portions received in an inner sidewall of the heat absorbing member corresponding to the LED modules, respectively, and condensing portions contacting with the heat sink; wherein the outer sidewall of the heat absorbing member comprises a plurality of alternated first and second elongated, rectangular facets, and the LED modules are mounted on the first rectangular facets; and wherein the inner sidewall of the heat absorbing member has a plurality of equidistant cantilevers formed thereon, the cantilevers being located corresponding to some of the second rectangular facets, a plurality of fasteners being fixed on the lamp base and extending through the cantilevers to mount the heat absorbing member on the lamp base.