Patent ID: 7870889
Filing Date: 2011-01-18
Classification: F28D,F28F,H01L

Abstract:
1. A heat dissipation device comprising: a radiator comprising a collar having a receiving hole and a plurality of fins extending radially and outwardly from an outer face of the collar; a core thermally received in the receiving hole of the radiator and having a flat bottom face and a top face opposite to the bottom face; and a heat pipe located between the radiator and the core and thermally contacting the collar of the radiator and the core, and extending from the bottom face of the core to the top face of the core, the heat pipe having a flattened bottom face coplanar with the bottom face of the core for contacting an electronic device; wherein the heat pipe is helical in shape and surrounds the core, and the core defines a helical groove in a circumferential face thereof, the heat pipe being received in the helical groove.