| 摘要 |
PURPOSE:To save electric power. CONSTITUTION:In an air cleaner equipped with a contamination sensor 6 which detects the degree of contamination of the air in a room and outputs a signal to start the air cleaning operation, a human sensor 7 which detects the human body and a control circuit which controls the human body detection output of the human sensor 7 to actuate a detective operation to flow air to the contamination sensor 6 are installed, so that only when the human body, which causes the contamination of the air, is in the room, the detective operation is carried out. |
