Patent ID: 7251134

Claim:
An extended fin array, comprising: a main heat-dissipation module, which is installed on an electronic device, the main heat-dissipation module being formed by connecting a plurality of main heat-dissipation bodies together, each of the main heat-dissipation bodies including: a main heat-dissipation plate, which transmits heat generated by the electronic device to cool air sent through by a fan, the main heat-dissipation plate being disposed in parallel to other main heat-dissipation plates; and main connecting plates, which are attached on both sides of the main heat-dissipation plate, for connecting the main heat-dissipation plate to the other main heat-dissipation plates, to thereby form the main heat-dissipation module; and an extended heat-dissipation module, which is stacked and intertwined with the main heat-dissipation module; wherein the extended heat-dissipation module is extendible out from or movable into the main heat-dissipation module, and the fan is used with the main heat-dissipation module and the extended heat-dissipation module to take heat away from the electronic device.