Patent ID: 8348470
Filing Date: 2013-01-08
Classification: F21V,F21Y,H01L

Abstract:
1. An LED illuminating device, comprising: a heat management room defined among an outer tube, an inner tube coaxially received in the outer tube, a heat absorbing member coupling to and sealing a bottom end of the outer tube, a base coupling to and sealing a bottom end of the inner tube, and a sealing plate arranged on top ends of the outer tube and the inner tube, the heat management room comprising a lower room being defined between the base and the heat absorbing member, and an upper room being defined between the inner tube and the outer tube, a bottom end of the upper room communicating with the lower room; working fluid filled in the lower room of the heat management room; a heat exchanging member comprising at least one heat exchanging pipe extending through the sealing plate into the upper room of the heat management room, an inner space of the at least one heat exchanging pipe communicating with the upper room of the heat management room and a plurality of heat exchanging fins arranged around the at least one heat exchanging pipe; an optical module comprising a substrate attached to the heat absorbing member and a plurality of LEDs fixed on the substrate; an electrical module being electrically connected with the LEDs; and a heat insulating member being received in the heat management room and attached to the base to thermally insulate the base from vaporized working fluid in the lower room of the heat management room.