Abstract: A passenger detection device for detecting a passenger in a vehicle in which a display device is disposed in such a way as to face a front seat ahead of the front seat, includes: a transmission unit that is mounted on the display device and transmits a radio wave to a vehicle interior; and a reception unit that is mounted on the display device and receives a reflected radio wave of the radio wave transmitted by the transmission unit.

Abstract: A first data acquiring unit to acquire first data acquired by a first sensor, a second data acquiring unit to acquire second data acquired by a second sensor installed above a seat in a cabin, a front-seat occupant position estimating unit to estimate a position of an occupant on a basis of the first data acquired by the first data acquiring unit, a detection range determining unit to determine a detection range of the second sensor on a basis of the position of the front-seat occupant estimated by the front-seat occupant position estimating unit, and a rear-seat occupant detecting unit to detect a rear-seat occupant on a basis of the second data acquired by the second data acquiring unit and the detection range of the second sensor determined by the detection range determining unit are provided.

Abstract: The present invention relates to a vehicle-mounted disk playback device, and more particularly to a disk playback device having the function of locking and unlocking a vibration insulating mechanism of a playback deck. According to the present invention, the disk playback device can transmit a conveyance force of the disk to a lock member to cause the member to unlock the playback deck by arranging a lever member, a clamp member, and an urging member with a specific feature.

Abstract: A disk playback device is arranged such that a lever member is, when the lever member has the conveyance force of a disk having abutted against a disk-detecting end of the lever member exerted thereon, the lever member is rotated in a carrying direction of the disk against the urging force of an urging member; thereby, a tip portion of the lever means moves a lock member in the direction where the lock by the lock ember is released; a long hole of the lever means is, when the lock member is moved off the tip portion before long, guided by a boss shaft of a clamp member to be moved by the urging force of the urging member; thereby, the disk-detecting end is moved off the disk clamped against the turntable, and also a pin of the clamp member fits in a cutaway groove of an arcuate hole of the lever member to position the lever member.