| 摘要 |
A grill shutter device (10) that has movable fins (14) rotating around a rotation shaft (19), and is able to control a flow rate of air flowing into a vehicle body from a grill opening portion, based on opening and closing operation of a shutter mechanism (15) provided in the grill opening portion of a front portion of the vehicle body, in which fin lengths of two directions with a rotation center of the movable fin interposed therebetween are set to unequal lengths so that moment of an opening direction is generated in the movable fin based on the pressure of the air flowing-in from the grill opening portion, and when the movable fin rotates in a closing direction, a wall surface forming a flow path of the air between the wall surface and a leading end is located in a direction that the leading end of the movable fin moves.
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