Patent ID: 8602723

Claim:
A heat dissipating blower, comprising: a main body comprising a shell and a fan inside the shell, wherein the shell comprises a first wall and a second wall spaced from and facing the first wall, an outlet and a first gap are defined between the first wall and the second wall, and the first gap is defined beside and communicates with the outlet, a connecting portion is set at one end of the first gap away from the outlet, two sliding guiding structures are formed on inner surfaces of the first wall and the second wall, a plurality of locating holes is set on the two sliding guiding structures; and a cover connected to the connecting portion of the main body, and comprising two parallel side plates and a middle plate connected between the two side plates, wherein a plurality of positioning pins is set on outer surfaces of the two side plates, the distance between the two side plates is less than the distance between the first wall and the second wall to make sure that the cover is accommodated in the first gap, some of the plurality of positioning pins are located in corresponding ones of the locating holes to change an area of the outlet.