| 摘要 |
PURPOSE:To prevent an abnormal temperature rise in the CAR compartment in case of parking, etc. for a prolonged time, and to conserve energy by driving an inside and outside air changeover damper and a fan by a power supply installed separately and introducing the outside air into the compartment through compartment internal and external communicating ducts when the internal temperature of the compartment reaches a fixed temperature or more. CONSTITUTION:When the internal temperature of the compartment reaches a fixed temperature or more, a sensor 28 is operated, and a stepping motor 27 is driven by a solar cell 20 through a control circuit 29. Consequently, the inside and outside air changeover damper 1 is changed over to the introduction of the outside air while an internal blower 22 is driven regardless of the ON-OFF of a blower switch 4. As a result, air is forwarded into the compartment to drop the internal temperature of the compartment, and a blast is stopped when the temperature drops up to a fixed temperature. According to said constitution, the fan is driven by a solar cell and the temperature rise of the compartment can be prevented even during parking for a prolonged time, the consumption of a normal power supply is obviated, and the operation of an air conditioner more than required can be omitted. |
