VENTILATION SYSTEM

PROBLEM TO BE SOLVED: To provide a ventilation system capable of carrying out ventilation causing no accumulation of dust on a floor or the like, by providing a blow-out opening blowing out air. SOLUTION: A ventilator comprised of a motor 14 rotating a fan 13, a damper 15 switching between circulation and ventilation, and a louver 16 having a vent hole provided to cover a suction opening, are provided in a body 4 interior. A human body detecting device 17 capable of detecting movements of the human body, and a light detecting device 18 judging the night and day are provided on the louver 16. In the human body detecting device 17, a dust device 19 is provided for detecting an amount of dust in the vent hole. A swing mechanism 21 is provided in a blow-out grille 10 such that a blowing direction of air can be changed. A control circuit 22 controlling the human body detecting device 17, the light detecting device 18, the dust device 19, a display means 20, the swing device 21, the motor 14, and the damper 15 is configured to be connected by a line. COPYRIGHT: (C)2008,JPO&INPIT