PROBLEM TO BE SOLVED: To provide a biological signal detecting device capable of accurately detecting biological signals of a users heart beating, body motion, respiration, etc. with simple configuration.SOLUTION: A rod-like vibration transmission pin 19 is fitted to a metal sheet 11 in a state of projecting in the radial direction of a piezoelectric element 2. Vertical force applied to the vibration transmission pin 19 can be transmitted to a piezoelectric body 12 of the piezoelectric element 2 and amplified by the elastic force of the vibration transmission pin 19, and electric charge converted according to the force applied to the piezoelectric body 12 can be made larger. The voltage change generated between the metal sheet 11 and a metal film 13 of the piezoelectric element 2 can be made larger. By signal-processing this voltage change in a signal processing circuit 17, the detection of biological signals based on the voltage change can be made further accurate.COPYRIGHT: (C)2012,JPO&INPIT【課題】簡単な構成で、利用者の心拍、体動および呼吸等の生体信号を正確に検出できる生体信号検出装置を提供する。【解決手段】棒状の振動伝達ピン19を圧電素子2の径方向に突出させて金属薄板11に取り付ける。振動伝達ピン19に加わった上下方向の力を、振動伝達ピン19が有する弾性力によって、圧電素子2の圧電体12に伝達して増幅でき、圧電体12に加わる力に応じて変換される電荷をより大きくできる。圧電素子2の金属薄板11と金属薄膜13との間に生じる電圧変化を大きくでき、この電圧変化を信号処理回路17にて信号処理することにより、この電圧変化に基づく生体信号の検出をより正確にできる。【選択図】図1
