Patent ID: 7345884

Claim:
A heat-dissipating fan comprising: a housing including an air inlet, an air channel, an air outlet, and a base having an adapting portion, the air inlet and the outlet being respectively at two ends of the air channel, the base being mounted in one of the ends of the air channel; an impeller rotatably mounted on the base, the impeller including a hub and a plurality of blades; and a circuit board mounted on the base, the circuit board including at least one heat-generating electronic element mounted thereon, and at least one extension extending radially outward there from, said at least one heat-generating electronic element extending out of the hub by means of the adapting portion of the base in relation to a longitudinal direction of the housing and being mounted on said at least one extension, with at least one portion of said at least one heat-generating electronic element located on a downstream side of the blades and directly exposed to the blade of the impeller for dissipating heat generated by said at least one heat-generating electronic element.