Patent ID: 7228889

Claim:
A heat dissipation device comprising: a fin set comprising a plurality of fins, a plurality of passages being defined between the fins; a fan being located at a front side of the fin set, and having a portion thereof located above a top of the fin set; a fan mounting device located between the fin set and the fan, the fan mounting device comprising a hood hooding on a front end of the fin set, and a faceplate having the fan mounted thereto, an opening communicating the fan with the passages being defined in the faceplate, the opening having an upper portion located above the top of the fin set, whereby an airflow generated by the fan flows through not only the passages of the fins but also a space above the top of the fin set; and a seat; wherein the hood of the fan mounting device comprises a top wall and two opposite lateral walls having rear portions thereof parallel to each other and front portions thereof slanting toward each other to connect with the faceplate, whereby the hood defines an increasingly enlarged channel from the fan toward the fin set; wherein the seat has a first base plate, the fin set thermally connected to the first base plate; and wherein the seat further comprises a second base plate having a face for contacting with a heat generating device for absorbing heat therefrom, and wherein a heat pipe has an evaporating portion thereof sandwiched between the first and second base plates.