| 摘要 |
PROBLEM TO BE SOLVED: To make an indoor effective space larger and reduce equipment costs, by providing a door which enables a person performing a fighting operation and a rescue one in case of fire to safely enter a room, without providing an internal strong point on an indoor side. SOLUTION: This door 1 is installed in an entrance 2 which is provided so that the person performing the fighting operation and the rescue one in case of fire can enter the room. In the door 1, a plurality of small doors 11-14 are vertically juxtaposed. COPYRIGHT: (C)2008,JPO&INPIT
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