Patent ID: 7132772

Claim:
An electric fan for a vehicle comprising: a fan; a motor for driving the fan; and a shroud functioning as a guide for guiding air sent from the fan, wherein the shroud has an annular portion located in an outer circumferential portion of the motor and the annular portion is fixed to the motor, the electric fan for the vehicle further comprising: a cooling air introducing port for introducing cooling air into a housing member of the motor, formed in a lower portion of an end portion in an axial direction of the housing member of the motor; a water-proof cover for covering the cooling air introducing port, arranged outside the axial direction end portion of the housing member while being separated from the cooling air introducing port by a predetermined distance; a bent portion formed at a lower end portion of the water-proof cover, extended downward from a lower end portion of the housing member by a predetermined distance and bent to an upstream side in a flow direction of the air sent from the fan; a first wall face formed in the annular portion extending in a vertical direction of the vehicle, the first wall face being located at the upstream side in the flow direction of the air by a predetermined distance from a forward end portion of the bent portion; a second wall face, at a lower position by a predetermined distance with respect to the bent portion, protruding from the first wall face so that the second wall face overlaps the bent portion in the axial direction of the housing; and an air introducing passage having a labyrinth structure, the labyrinth structure being defined by the water-proof cover, the first wall face and the second wall face on an inlet side of the cooling air introducing port.