Patent ID: 7729119

Claim:
A heat dissipation device comprising: a base adapted for thermally connecting with an electronic component; a heat-dissipation portion attached to the base, the heat-dissipation portion comprising a housing attached to the base and a plurality of fins extending inwardly from an inner periphery of the housing, a plurality of airflow passages being defined between the fins; a heat pipe comprising a heat-receiving section received in the base and a heat-discharging section extending from an end portion of the heat-receiving section and attached to the housing; and a fan directly mounted on the heat-dissipation portion for generating an airflow flowing into the airflow passages; wherein the housing encircles the fins and is employed as a fan duct to prevent the airflow from being prematurely dispersed out of the fins along the airflow passages and wherein the airflow has a more sufficient contact with parts of the fins which are located near the inner periphery of the housing; and wherein the housing comprises four sidewalls encircling the fins, a pair of flanges protrude from an outer face of one of the sidewalls, and a slot is defined between the flanges for receiving the heat-discharging section of the heat pipe wherein the heat discharging section is exposed to ambient air.