VIBRATION POWER GENERATION DEVICE

To provide a vibration power generation device that can suppress a decline in the power generation capacity.SOLUTION: A vibration power generation device 50 includes a pair of piezoelectric element laminates 10 (10A, 10B), a weight body 51 disposed between the pair of piezoelectric element laminates, and a fixing member 52 disposed between the pair of piezoelectric element laminates. The piezoelectric element laminate includes a piezoelectric element 1 (1A, 1B) having a substrate 11 and a plurality of piezoelectric members 12 disposed on the substrate, and a printed wiring board 2 (2A, 2B) having an opening 21 disposed on the surface opposite to the weight body side of the piezoelectric element. The piezoelectric element has a piezoelectric body in a first area A which is an area where the substrate and the opening overlap in a plan view, and each of the piezoelectric element laminate is fixed to a weight body in the first area of the substrate.SELECTED DRAWING: Figure 3 【課題】発電能力の低下を抑制することが可能な振動発電デバイスを提供する。【解決手段】振動発電デバイス５０は、一対の圧電素子積層体１０（１０Ａ、１０Ｂ）と、一対の圧電素子積層体間に配置された重錘体５１と、一対の圧電素子積層体間に配置された固定部材５２と、を有する。圧電素子積層体は、基板１１および基板上に配置された複数の圧電体１２を有する圧電素子１（１Ａ、１Ｂ）と、圧電素子の重錘体側と反対側の面上に配置された、開口部２１を有するプリント配線板２（２Ａ、２Ｂ）とを有する。圧電素子は、基板と開口部とが平面視上重なる領域である第１領域Ａに圧電体を有し、それぞれの圧電素子積層体は、基板の第１領域で重錘体に固定されている。【選択図】図３