Patent ID: 8220528

Claim:
A heat dissipation device adapted for cooling an electronic device mounted on a printed circuited board, comprising: a heat spreader contacting the electronic device; a fin assembly comprising a plurality of fins; a supporting bracket contacting the heat spreader and supporting the fin assembly; and a heat pipe extending through the fin assembly and the supporting bracket, and attached to the heat spreader, wherein a lowermost fin of the fin assembly has a plurality of clasps extending towards the supporting bracket, the clasps being bent and pressing a bottom of the supporting bracket after the clasps extending through the supporting bracket; wherein each of the clasps comprises a body and a hook extending from a distal end of the body, the supporting bracket defining a plurality of clasp holes near two ends thereof, the hooks of the clasps being bent and pressing a bottom of the supporting bracket after the hooks of the clasps extending through the clasp holes of the supporting bracket; wherein each of the fins includes a main body and two flanges extending at two opposite ends of the main body and towards the supporting bracket, the clasps being formed at the main body and near the two flanges; and wherein the supporting bracket includes a connecting portion located at a middle thereof, two supporting portions integrally formed at two opposite ends of the connecting portion, two arms respectively extending outwardly from two free ends of the two supporting portions and two flanges extending downwardly from two distal ends of the arms.