| 摘要 |
PURPOSE: A cooling apparatus is provided to prevent thermal losses of the driving motor, while reducing the weight of the cooling fan and achieving improved cooling performance of the engine room. CONSTITUTION: A cooling fan comprises a shroud(31) for mounting a rotating fan(40) on a radiator; the rotating fan for moving the atmosphere to the radiator; and a driving motor(50) for driving the rotating fan. The rotating fan includes a plurality of rotating blades(41); a rotating ring(42) having an inner surface on which the rotating blades are integrally connected; and a body(43) having an outer surface on which the rotating blades are integrally connected. The body of the rotating fan has a front surface on which a plurality of cooling holes(45) are formed in a radial direction in such a manner that the cooling wind is guided into the body of the rotating fan so as to cool the driving motor. Protruded pieces(46) are formed at the front surface of the body of the rotating fan so as to guide the air toward the inside of the cooling hole during the rotation of the body.
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