| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-house ventilation device for ventilating inside houses where no one can ventilate during day time, due to a working couple or temporary transfer, capable of ventilating during only fine weather daytime at a low cost. SOLUTION: The in-house ventilation device has a ventilation air tube device for transferring air from one room to next room with entrances all closed, so that each room is ventilated in a predetermined order. One ventilation fan can ventilate all the rooms. Using sun's photovoltaic energy allows the device to operate only while the amount of solar radiation is high, thus assuring reliable in-house ventilation. COPYRIGHT: (C)2004,JPO&NCIPI
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