Patent ID: 7443677
Filing Date: 2008-10-28
Classification: F28D,H01L

Abstract:
1. A heat dissipation device comprising: a first heat sink adapted for thermally contacting with an electronic device; a second heat sink mounted on the first heat sink; at least one heat pipe connecting with both the first heat sink and the second heat sink, wherein the at least one heat pipe surrounds an entire periphery of the first heat sink and comprises an evaporating portion, a first condensing portion and a second condensing portion, wherein, the first condensing portion and the second condensing portion extend from two opposite ends of the evaporating portion respectively, the evaporating portion is positioned adjacent to the electronic device, the two condensing portions extend inwardly and bend in opposite directions to each other, the first condensing portion extends through the first heat sink, the second condensing portion extends through the second heat sink.