| 摘要 |
PROBLEM TO BE SOLVED: To sufficiently secure the working space of a pass box. SOLUTION: This device is equipped with a first clean room A, a pass box C being installed in between this first clean room A and a second clean room B different in a degree of cleanliness with the former and to be used for the delivery of an article between both these clean rooms A and B, a first on-off door D installed between this pass box C and the first clean room A, and a second on-off door E installed between this pass box C and the second clean room B, respectively. In this case, both these first and second on-off doors D and E are comprised of a winding-up sheet shutter capable of opening or closing in the vertical direction, having individual sheets 3 to be wound and stored in an upper part by a winder 2.
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