| 摘要 |
Disclosed is a ventilation apparatus having a wind tunnel pipe provided in a wall portion, a cylindrical portion which is attached to the wind tunnel pipe and which has a fan and a motor on the inside of the cylindrical portion, a louver provided on one opening of the cylindrical portion, and a flange portion which is continuously formed with the cylindrical portion and which is projected in a rectangular manner from the outer periphery of the opening in the direction perpendicular to the rotation axis of the fan. The motor is provided with a cylindrical heat release plate surrounding the periphery of the rotary shaft in the axial direction. The heat release plate is secured to the cylindrical portion via fixation legs radially extending in the direction perpendicular to the rotary shaft. |
