Patent ID: 7946737

Claim:
An LED illumination device, comprising: an optical section being provided with a light source therein; an electrical section being electrically connected with the light source; and a heat dissipation section located between the optical section and the electrical section, the heat dissipation section being provided with a heat dissipation device, the heat dissipation device comprising a hollow metal tube, a plurality of metal fins extending radially outwardly from the metal tube, a bottom cover plate hermetically sealing a bottom of the metal tube, a top cover plate hermetically sealing a top of the metal tube, and a tubular member received in the metal tube, the tubular member having a diameter smaller than the metal tube with a condensing chamber defined between the metal tube and the tubular member, a bottom of the tubular member being spaced from the bottom cover plate with an evaporating chamber defined between the bottom of the tubular member and the bottom cover plate, a vapor passage channel being axially defined through a central portion of the tubular member, a top of the tubular member being spaced from the top cover plate with a vapor chamber defined between the top of the tubular member and the top cover plate, the vapor passage channel connecting the evaporating chamber with the vapor chamber, the condensing chamber connecting the vapor chamber with the evaporating chamber, a working fluid being filled in the evaporating chamber, the light source being thermally attached to an outer surface of the bottom cover plate; wherein a porous wick is received in the evaporating chamber and attached to the bottom cover plate, and the working fluid is saturated in the porous wick.