VEHICLE AIR-CONDITIONING DEVICE

A vehicle air-conditioning device comprises: an air-conditioning case (101, 140, 150) that forms an air passage through which air blown into the passenger compartment flows; a blower (130) that is disposed inside the air-conditioning case and draws the air into the air-conditioning case; and a particle detector (200) that detects the particle concentration of particulate matter contained in the air. The particle detector has: a light-emitting unit (210) that irradiates the air with light; a light-receiving unit (220) that receives scattered light caused by light emitted by the light-emitting unit hitting particulate matter and being scattered; and a sensor case that houses the light-emitting unit and the light-receiving unit. The sensor case is formed with a sensor inlet (231) that introduces some of the air drawn into the air-conditioning case by the operation of the blower into the sensor case. 车辆用空调装置具备：空调壳体(101、140、150)，该空调壳体形成供向车室内吹送的空气流动的空气通路；送风机(130)，该送风机配置于所述空调壳体的内部，并将所述空气吸入所述空调壳体的内部；以及颗粒检测部(200)，该颗粒检