PROBLEM TO BE SOLVED: To provide an AC current therapy device in which the luminescent display of a therapy remaining time can be made such a light spot as not too bright nor concerned in a dark place and a confirmable degree even in a bright place, and two or more light emission modes can be adopted.SOLUTION: An AC potential therapy device is provided for executing therapy by applying an AC high voltage to a living body from an electrically conductive mat of insulating coating. When performing the luminescent display of a therapy remaining time in the AC potential therapy device, the ON time of a timer circuit T is set by therapy time selection switches arranged on an outer surface of the therapy device every predetermined time, and the potential therapy device is operably constituted only by this ON time. Also, a large number of light emitting elements arranged in response to the selection switches are made to emit light, respectively, in a light spot moving light emission mode in which light emission points sequentially move one by one according to the reduction in therapy remaining time, a light spot gradual decrease light emission mode, and a block light emission moving mode, by a light emission mode control unit CPU and light emission mode-selector switches SA/SB. Further, the luminescent display are set such a light spot as not too bright nor concerned in a dark place and a confirmable degree even in a bright place.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】治療残時間の発光表示を暗所では明る過ぎずに気にならず、明所でも確認できる程度の光点としたり、複数の発光モードを採用可能にする交流電流治療器を提供する。【解決手段】絶縁被覆の導電マットから生体に交流高電圧を印加して治療を実行する交流電位治療器の治療残時間を発光表示するに当たり、前記治療器の外面に所定時間毎に配列した治療時間選択スイッチで、タイマー回路Tのオン時間を設定し、このオン時間だけ前記電位治療器を作動可能に構成すると共に、前記選択スイッチに対応して配列した多数の発光素子を発光モード制御部CPUと発光モード選択スイッチSA・SBにより、治療残時間の減少に応じて発光点が1個ずつ順次に移動する光点移動発光モードと、光点漸減発光モードと、ブロック発光移動モードとでそれぞれ各別に発光させ、かつ、前記光点を暗所では明る過ぎずに気にならず、明所でも確認できる程度の光点に設定した。【選択図】図1