There is provided a fan motor in which an increase in the temperature of
windings thereof is surpressed, thereby achieving a long life and high
performance. Vent holes 33 for introducing air into a cup-like member 9
are formed in a bottom wall section 9b of a rotor 6. Air flowing
direction adjusting ribs 37, which are arranged at intervals in a
peripheral direction and each of which extends in a radial direction, are
integrally provided on the inner surface of the bottom wall section 9 so
that air flown out of exits 33b of the vent holes 33 is directed toward
windings 3. In addition to the air flowing direction adjusting ribs 37, a
plurality of air stirring ribs 39 for stirring the air inside the
cup-like member 9 is arranged on the inner surface of the bottom wall
section 9.