PROBLEM TO BE SOLVED: To provide an electrocardiographic apparatus for a vehicle that achieves reduction of discomfort due to a capacitive coupling type electrode provided on a seat.SOLUTION: An electrocardiographic apparatus for a vehicle comprises: a direct electrode that is provided at a steering wheel of the vehicle and detects a drivers body potential by contacting drivers skin a capacitive coupling type electrode 6 that is provided in a seat of the vehicle and detects the drivers body potential while being insulated electrically and an electrocardiograph 8 that measures drivers electrocardiographic signals on the basis of the potential at the direct electrode and the potential at the capacitive coupling type electrode 6. The seat is formed by sequentially layering rigid urethane 26, urethane 28 and surface skin 29. A dent 26a is formed in the rigid urethane 26, a hole 28a is formed in the urethan 28, and a recess 30 is formed by the dent 26a and the hole 28a. The electrocardiograph 8 is arranged at the dent 26a of the recess 30 and the capacitive coupling type electrode 6 is arranged in a space closer to the surface skin 29 than the electrocardiograph 8 in the recess 30.COPYRIGHT: (C)2014,JPO&INPIT【課題】シートに設けた容量結合型電極による違和感の軽減を図った車両用心電計測装置を得る。【解決手段】車両のステアリングホイールに設けられ、運転者の皮膚に接触して運転者の身体電位を検出する直接電極と、車両のシートに設けられ、電気的絶縁状態で運転者の身体電位を検出する容量結合型電極6と、直接電極における電位と容量結合型電極6における電位とに基づき運転者の心電信号を計測する心電計測器8とを備える。シートは、硬質ウレタン26、ウレタン28、表皮29が順に積層されており、硬質ウレタン26には窪み部26aが形成され、ウレタン28には穴部28aが形成され、窪み部26aと穴部28aとにより凹部30が形成されている。凹部30のうち窪み部26aに心電計測器8が配置されており、容量結合型電極6は凹部30における心電計測器8よりも表皮29側の空間に配置されている。【選択図】図3
