| 摘要 |
PURPOSE:To satisfy the necessary amount of ventilation and suppress the fluctuation of pressure propagated in a vehicle with simple structure with respect to the increase of outside pressure generated in association with the high speed travel of the vehicle so as to prevent an ear buzzing phenomenon received by passengers. CONSTITUTION:A ventilating device for a vehicle is formed of a plate spring 6 deformed by the air quantity increase of a ventilating fan, a limit siwtch 8 for detecting the deformation of the plate spring 6 so as to perform the on-off change-over of a contact, a cut-off grill formed of a movable grill 9 and a fixed grill 10, a driving actuator 11 and a solenoid valve 12 for performing the operation of the cut-off grill, and a control panel 22 for controlling them. |
