Patent ID: 8520383

Claim:
A heat dissipating device comprising: a heat dissipater thermally coupled to a heat generator, the heat dissipater configured to transmit heat from the heat generator to air; at least one blade that forms an air flow to at least a portion of the heat dissipater by flapping; and a blade drive that drives the at least one blade to flap when operating, wherein the blade drive includes; at least one shaft, at least one magnet having an upper side and a lower side with polarities different from each other, at least one bobbin connected to the at least one blade, the at least one bobbin configured to rotate up and down alternately within a predetermined range of angles on an axis of the at least one shaft, and a coil wound on the at least one bobbin spaced from the at least one magnet that enables a current to pass, wherein the at least one bobbin drives the at least one blade as the at least one bobbin is rotated by a force generated by the at least one magnet and the coil when the current flows to the coil.