PURPOSE: To improve function, by providing a hot water tank and a cleaning nozzle within the toilet seat attached to a toilet pot and also by providing a feed water control valve interlocked with a control handle for hot water volume.
CONSTITUTION: A toilet seat 10 supported by a fitting base 26 is attached to a toilet pot through an oval hole 34. Next, a hot water tank 40 having a heater is provided within the toilet seat 10 and a tap water feed pipe 48 equipped with a solenoid valve 50 and a main hot water feed pipe 54 are fitted to both end openings thereof. Next, a pipe 54 is connected to a cleaning nozzle 62 for charm and a cleaning nozzle 64 for shower through a valve 56. And a lever handle 66 is fitted at the valve 56 to enable to stop the water, select the nozzles, and adjust the hot water volume. And a controller is provided at the handle to open and close the valve 50, interlocked with feeding and stopping operation of the water. In this way, fitting operation becomes easier and temperature decrease of the hot water can be prevented and also the valve can be easily fitted, inspected and repaired.