PROBLEM TO BE SOLVED: To make it possible to certainly grasp a bed-leaving preparation state and a bed-leaving state to enable a current situation of a person in bed to be correctly grasped and notified.SOLUTION: A load cell (2) is provided to two right and left bed legs (1A) themselves or between the bed legs (1A) and a floor surface. When a signal issued by the load cell (2) exceeds a threshold value of a value from 1 to 9 to 3 to 7 of a load difference input into a CPU of a censor unit (7) in advance, optical, phonetic, or both notification means (6) is operated to notify that a bed user is in a bed-leaving preparation state or in a bed-leaving state.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】離床準備状態及び離床状態を確実に把握できるようにして、着床者の現状を正確に把握して告知できるようにすること。【解決手段】左右2本のベッド脚部(1A)自体に又は該ベッド脚部(1A)と床面との間にロードセル(2)を夫々設け、該ロードセル(2)の発した信号を、センサーユニット(7)のCPUに予め入力された荷重差の1対9乃至3対7の値のしきい値を超えた時に光学的又は音声的或はその両方の告知手段(6)を稼働させ、ベッド使用者が離床準備状態又は離床状態にあることを告知する。【選択図】図1