An air-applying device has an impeller having a center of rotation, and a
case which contains the impeller. The case includes a first edge defining
an inlet port of air which exposes the center of rotation, a second edge
defining an outlet port of air, and a high-pressure region which presents
upon operational rotation of said impeller. The high-pressure region is
located within the case along a peripheral portion of the impeller. A
distance between the center of rotation of the impeller and the first edge
is shorter in the direction from the center of rotation to a center of the
high-pressure region than from the center of rotation to region other than
the high-pressure region.