PROBLEM TO BE SOLVED: To provide a wake-up support device which can be easily used by a person who requires care, and by a general person regardless of a use space such as a general bed and a futon used in a Japanese-style room, especially, when it is used on a bed having a head, the wake-up support device is expanded without separating from the head, so that it can be stably used easily.SOLUTION: The wake-up support device is formed of an air bag 1 and an air pump 2 for supplying air to the air bag 1 for expanding the air bag, the air bag 1 is configured so that in a full expansion time, a slant face 1a is formed into a right triangle shape in a cross section which serves as an action face to a human body.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】一般的なベッドや和室使用の布団等、使用場所を問わず、要介護者は固より、一般人も手軽に使用でき、特に、ヘッドのあるベッドにおいて使用する場合にヘッドから離れることなく膨隆するため、安定して使い勝手がよい起床支援装置を提供することを課題とする。【解決手段】エアバッグ1とエアバッグ1に空気を供給して膨隆させるエアポンプ2とから成り、エアバッグ1は完全膨隆時において、斜面1aが人体に対する作用面となる断面直角三角形状を呈する。【選択図】図1