Patent ID: 7905274

Claim:
A wing-spanning thermal-dissipating device having a plurality of thermal-dissipating sheets, each of the thermal-dissipating sheets comprising: a connecting portion, wherein the connecting portions of the thermal-dissipating sheets connect with each other; at least one thermal-dissipating fin, which is extended outwardly and spread out from the connecting portion; and a plurality of sub-thermal-dissipating fins, which are extended from at least one side of the thermal-dissipating fin; wherein the sub-thermal-dissipating fins are disposed asymmetrically on opposite sides of the thermal-dissipating fin, the sub-thermal-dissipating fins and the adjacent sub-thermal-dissipating fins are disposed alternately, and at least one of the sub-thermal-dissipating fins touches against at least one of the adjacent thermal-dissipating fins so that the thermal-dissipating fins are spread out from each other.