| 摘要 |
PURPOSE:To keep a bathtub heat safely, by forming a hot air duct on the external circumference of the bathtub. CONSTITUTION:A supporting frame 5 is formed of framing 4, such as an angle material on the exterior of a bathtub, a gap 7 is formed between a heatproof and waterproof plate material 6 provided and the bathtub 1, the gap 7 is made into a hot air duct 2 on which a hot air intake 9 and outlet 10 are provided and the hot air intake 9 is connected through an intake side duct 12 with a hot air generator 11. The outlet 10 is connected with an exhaust side duct 13. |
