| 摘要 |
PROBLEM TO BE SOLVED: To improve drainage efficiency in a simple bathtub in which hot water is stored in a hot water storage sheet.SOLUTION: A simple bathtub is composed by assembling a simple bathtub frame 10 in which a plurality of tabular or rod-like support parts are connected in the circumferential direction in a cylindrical manner, and fitting a sheet for the simple bathtub thereto. In the simple bathtub frame 10, a slit 18 for drainage is formed in the connection part. After the sheet for the simple bathtub with hot water stored therein is used as the simple bathtub, the sheet for the simple bathtub is gradually pushed down, thereby effectively draining the water from the slit 18 for drainage. |
