PROBLEM TO BE SOLVED: To provide a biological information detector mounted on a vehicle to detect the pulse waves of an occupant, which can correctly detect the pulse waves of the occupant while making the occupant free from the burden of attachment of the detector, and suppress the power consumption due to the emission of irradiation light as much as possible.SOLUTION: A vehicle seat includes: a light-emitting section 21 for emitting irradiation light toward a predetermined part of sitting person if the sitting person who sits on the vehicle seat is present and a light-receiving section 22 for receiving light reflected from at least a pulse portion in the skin on the predetermined part of the sitting person, the reflected light being originated from the irradiation light, and outputting a signal corresponding to the strength of the reflected light which has been received. A partitioning section 23 for preventing the light-receiving section 22 from receiving the reflected light from the body surface on the predetermined part of the sitting person, the reflected light being originated from the irradiation light, is formed between the light-emitting section 21 and the light-receiving section 22 in the vehicle seat to detect the pulse waves of the sitting person from the output signal of the light-receiving section 22 during the emission of the irradiation light by the light-emitting section 21.COPYRIGHT: (C)2012,JPO&INPIT【課題】生体情報検出装置を車両に搭載して該車両の乗員の脈波を検出する場合に、その乗員に装置装着の負担をかけないようにしつつ、乗員の脈波を正確に検出できるようにするとともに、照射光の照射による電力の消費を出来る限り抑制する。【解決手段】車両用シートに、該車両用シートに着座した着座者が存在するときに、該着座の所定部位へ向けて照射光を照射する発光部21と、上記照射光の、上記着座者の所定部位における表皮内の少なくとも脈部からの反射光を受光して、該受光した反射光の強度に応じた信号を出力する受光部22とを設け、車両用シートにおける発光部21と受光部22との間に、上記照射光の、上記着座者の所定部位における体表面からの反射光が、受光部22により受光されることを抑制する仕切り部23を設け、発光部21が照射光を照射しているときに、受光部22の出力信号から上記着座者の脈波を検出する。【選択図】図3
