PROBLEM TO BE SOLVED: To provide a bath unit which permits a sitting surface portion provided in a bathtub to be lifted and lowered and a bather to safely bathe.SOLUTION: The bath unit 1 has a bathtub 10, a sitting surface portion 21 provided in the bathtub 10 and on which a bather sits, a lifting mechanism 30 lifting and lowering the sitting surface portion 21, and a flap 23 connected to the sitting surface portion 21 through a thin-wall connecting portion 25 and capable of changing the posture in accordance with the height position of the sitting surface portion 21.COPYRIGHT: (C)2013,JPO&INPIT【課題】浴槽内に設けられる座面部が昇降可能な入浴装置であって、入浴者が安全に入浴できる入浴装置を提供する。【解決手段】入浴装置1は、浴槽10と、浴槽10内に設けられて、入浴者が着座する座面部21と、座面部21を昇降する昇降機構30と、座面部21に薄肉の連結部25を介して連結されて、座面部21の高さ位置によって姿勢を変更できるフラップ23と、を備える。【選択図】図3