To provide a bathtub apparatus capable of keeping both the inside temperature and the warming feeling within the comfort temperature zone even after bathing for a long time.SOLUTION: The bathtub apparatus 1 of the present invention comprises a bathtub 2, a heating portion (a neck heating heater 12 and a back heating heater 14) provided on a wall surface inside the bathtub, and a temperature of the bathtub water is detected A temperature detection sensor 9 and a control unit 18 for controlling the temperature of the heating unit, and the control unit controls the temperature of the heating unit such that the inside temperature and the warming feeling of the bather are kept within the respective comfort temperature zones, The temperature of the bathtub water detected by the temperature detection sensor is higher than the first predetermined temperature (39 C.), the control unit controls the temperature of the bathtub water Is lower than the first predetermined temperature, the heating unit is controlled so that the input heat quantity becomes smaller.(FIG.【課題】長時間入浴しても、体内温度と温感の両方を快適温度ゾーン内に収め続けることが可能な浴槽装置を提供する。【解決手段】本発明の浴槽装置1は、浴槽2と、浴槽の内部の壁面に設けられた加温部(首加温ヒータ12と背中加温ヒータ14)と、浴槽水の温度を検知する温度検知センサ9と、加温部の温度を制御する制御装置18と、を有し、制御部は、入浴者の体内温度と温感をそれぞれの快適温度ゾーン内に収め続けるように、加温部の温度と加温時間を自動で制御する自動運転モードを有し、制御部は、温度検知センサによって検知した浴槽水の温度が第1所定温度(39℃)よりも高い場合は、浴槽水の温度が第1所定温度よりも低い場合よりも、投入熱量が小さくなるよう加温部を制御する。【選択図】図8
