| 摘要 |
PROBLEM TO BE SOLVED: To always store wash water in a hygienically good state by periodically changing water in a hot water tank, and further sterilizing the internal wall or the like of the hot water tank in view of troublesome work due to the necessity of draining the hot water tank of a sanitary washing toilet seat when staying away from home for a long period of time. SOLUTION: This sanitary washing toilet seat is provided with a means for periodically changing wash water in a hot water tank in the sanitary washing toilet seat, and a means for irradiating electromagnetic wave into the hot water tank.
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