| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vent hole device which can automatically open and close in accordance with a temperature of outside air without requiring wiring for power supply and an open/close control. <P>SOLUTION: The vent hole device A for introducing the outside air G from the outside T1 of a building into the inside T2 includes an open/close mechanism 11 for opening and closing a ventilation passage R in which the outside air G circulates to communicate/shut off between the outside T1 and the inside T2. The open/close mechanism 11 includes: a bimetal 12 deforming in accordance with the temperature of the outside air; and an opening and closing member 10 for opening and closing the ventilation passage R by following the deformation of the bimetal 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
