| 摘要 |
PROBLEM TO BE SOLVED: To improve sealing property of an outdoor hood having a damper function and hence suppress invasion of moisture to an indoor side. SOLUTION: A rotatable damper 21 is provided on a hood 7. A wire 22 is coupled with the damper 21 through a temperature fuse 50, which wire 22 is wound with a wind drum 23 to open an exhaust hole 31 in the hood 7. The damper 21 is energized by self weight thereof and by a gas spring 25 in its closed state to press a packing member 33 mounted on a peripheral edge of the exhaust hole 31. Hereby, sealing property of the hood 7 is kept intact upon the exhaust hole 31 being closed to suppress invasion of moisture and dust from the exhaust hole 31 to an indoor side. |
