| 摘要 |
PROBLEM TO BE SOLVED: To prevent the leakage of polluted air to the outside and to clean polluted air to obtain clean air. SOLUTION: A smoke isolating booth 1 has a box-shaped wall portion 2 equipped with a dust collector sucking polluted air P from the first suction port 41 disposed at the opening part 21a formed on a front plate 21 and cleaning the same to discharge clean air C from the first exhaust port 42 disposed at the lower part of the front plate 21, a blower installed independently of the dust collector and sucking polluted air P (P') from the second suction port 51 disposed at the opening part 21a of the front plate 21 to discharge the same from the second exhaust port 52 disposed at the upper part of the front plate 21 and a top plate portion 3 formed so as to protrude forwardly from the upper end of the back plate of the wall part so that polluted air P (P') discharged from the second exhaust port 52 flows along a lower surface 3a and having an air flow control part 31 disposed at the leading end thereof to extend.
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