| 摘要 |
PROBLEM TO BE SOLVED: To provide an air mat device installed in a home bathtub (Fig. 2-1, not shown), capable of reducing costs by preventing hot water within a bathtub from overflowing into the outside when a bathing person sinks his/her body into the bathtub. SOLUTION: The air mat device, composed of an air-mat 1 relay pipe 6 and an air tank 7, of an air mat unit (Fig. 1, not shown) is used to prevent hot water from being unavoidably added by the following bathing person because the hot water in the conventional home bathtub overflows into the outside when the bathing person sinks his/her body into the bathtub. Consequently, the volume of hot water in the bathtub is adjusted in conformity with the bathing person having the maximum volume for the purpose of allowing the fixed volume of hot water to be constantly secured and enabling waste of spending caused by conventional hot water overflow to be stopped in order to bring about a great economic effect. |
