Patent ID: 7640968
Filing Date: 2010-01-05
Classification: G06F,H01L

Abstract:
1. A heat dissipation device comprising: a base having a bottom face adapted for contacting with a heat-generating electronic component; two heat pipes each comprising an evaporating portion embedded in the base and a condensing portion extending from an end of the evaporating portion; a heat radiator mounted on a top face of the base opposite to the bottom face and comprising first and second fin assemblies each having two contacting faces, the condensing portions of the two heat pipes sandwiched between the contacting faces by the first and second fin assemblies, and an opening enclosed by the first and second fin assemblies; two heat spreaders receiving the condensing portions of the heat pipes and sandwiched between the contacting faces of the first and second fin assemblies; and a fan mounted in the opening; wherein each of the first and second fin assemblies has a substantially arc-shaped configuration and comprises a plurality of semi-annular fins, the fins are separated from each other at uniform intervals to define channels communicating the opening of the heat radiator with an exterior of the radiator; and wherein the fan is an axial flow fan, and bottom fins of the first and second fin assemblies have semi-circular configurations for enclosing a bottom of the opening.