| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilator in which collision sound can be relaxed at the time of closing an outer wind prevention shutter. SOLUTION: An outer wind prevention shutter 10 opening/closing freely through a supporting part 9 is provided in a duct joint 8 being connected with a body 6. The outer wind prevention shutter 10 is formed rigid in the vicinity of the supporting part 9 and the outer circumferential part 11 abutting against a receiving part 12 provided at the duct joint 8 is imparted with flexibility by forming it of polyethylene resin. Consequently, collision sound can be relaxed at the time of closing the outer wind prevention shutter. |
