| 摘要 |
PROBLEM TO BE SOLVED: To provide an indoor air discharging device of high safety which is supplied at low cost. SOLUTION: A device for discharging air in a protective room has a container 2 with an indoor air inlet 6 and a pipe 11 to discharge air outdoors. A non-return valve formed of a thin metal plate is disposed on an inner side of the container of the air inlet 6, and a mosquito net is provided on a tip of the pipe 11. COPYRIGHT: (C)2004,JPO&NCIPI
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