| 摘要 |
PURPOSE:To enable ventilation and smoke exhaust by providing a reversible fan which is normally rotated by a solar battery while being reversed by a storage battery loaded on an automobile in a passage connecting the inside and outside of said automobile. CONSTITUTION:Both at the time of ventilation and smoke exhaust, a cover 7 is removed by means of a cover opening/closing control motor 9 to open up a duct 4. In this condition, when the inside temp. gets higher than the set temp. of a temp. detecting switch 11, the voltage of a solar battery 8 is applied to a driving motor 5. Thereby, the motor 5 is normally rotated taking in the outside air into an automobile by means of a reversible fan. On the other hand, when smoke inside the automobile is detected by a smoke detecting switch 10, a power source circuit is witched over to a storage battery side and the motor 5 is reversed by means of the storage battery, driving the reversible fan in the reverse direction to discharge smoke inside out of the automobile. Thus, both ventilation and smoke exhaust can be carried out. |
