PROBLEM TO BE SOLVED: To provide a tumble-doll type lifesaving chamber which can be purchased and used by anyone because it is possible to perform the manufacture inexpensively and the convenient use, and which is easily stored, and freely movable because of being not very heavy, and adequate in size.SOLUTION: In the tumble-doll type lifesaving chamber, an upper chamber 10a with its upper end being swollen upward and a lower chamber 10b with its lower end being swollen downward are coupled with each other to constitute a lifesaving chamber 10. A lower section of the upper chamber is constituted of an inner surface of a metal plate 1a and an outer surface of an elastic plate, and an upper section thereof is constituted of a transparent plate 1c. The lower chamber is constituted of an inner surface of the metal plate and an outer surface of the elastic plate, and an opening/closing gate 2, in which a handle 2a is included, is installed at a center part of the upper end of the upper chamber. A heavy object forming the center of gravity is placed at a recessed lower end inside the lower chamber, and the lifesaving chamber is moved like a tumble doll. A lightweight evacuation body 4, in which at least one evacuation groove is formed in an upper surface, is installed inside the lower chamber above the heavy object.
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