Patent ID: 9651917
Date: 2017-05-16
CPC Classifications: F04D,G03G

Claim:
1. An image forming apparatus comprising: a cylindrical fan main body having multiple blades arranged around a shaft; a first housing including a first air outlet port configured to cover a center of the fan main body in a shaft direction and configured to blow out air; a second housing configured to cover both ends of the fan main body in the shaft direction, supported by the first housing rotatably about the shaft, having a second air outlet port through which air is blown out, and configured to be shiftable between a predetermined first rotation position and a second rotation position reached through a rotation from the first rotation position by a predetermined angle about the shaft; a drive portion configured to rotate the second housing; and a rotation control portion configured to control the drive portion and move the second housing to the first rotation position or the second rotation position.