| 摘要 |
PROBLEM TO BE SOLVED: To prevent a closed space formed on the outer surface side of a bathtub from forming humid environment. SOLUTION: A drain port 2 provided in a bathtub bottom part 1a is connected to an auxiliary drain port 4 of a backing material 10 by a bathtub drain pipe 3. A main trap member 7 provided at a main drain port 6 in a region of a washing place floor part 20 is put in water flow communication with an auxiliary trap member 5 provided at the auxiliary drain port 4, by a communicating pipe 9. A cover member 11 connecting the bathtub drain pipe 3 to the auxiliary trap member 5 is hangingly provided with water pipes 15, and water passages 15a of the water pipes 15 are set to reach into sealing water 12 from the upper face part of a mounting cover. A contact area of the sealing water 12 stored in the auxiliary trap member 5, and the closed space C on the outer surface of the bathtub 1, is thereby only the cross-sectional area of the water passages 15a, so that the quantity of steam evaporating into the closed space C is suppressed to an extremely small quantity. Consequently, water accumulated on the backing material 10 for some reason can be drained to the auxiliary trap member 5 through the water pipes 15 of the mounting cover 11. COPYRIGHT: (C)2005,JPO&NCIPI
|
