| 摘要 |
PURPOSE:To safely economically carry out breathing of gas in a battery type unmanned vehicle by covering the battery with an exhaust hood in the automatic charging and utilizing a difference between the internal pressure of the exhaust hood and the external pressure of a car body to provide a means for breathing gas in the exhaust hood to the outside of the car body for example. CONSTITUTION:In a battery type unmanned vehicle under the automatic charging of the battery 4, a drive section 8B of a blower 8 is driven to rotate a fan 8A. Air is supplied from an intake cylinder 7 to an exhaust cylinder 6 to generate an air flow(exhaust flow) directed from the exhaust cylinder 6 to a hole 1A in the side wall of a car body. Thus, air in the exhaust hood 5 is taken out to be exhausted to the outside of the car body 1. Thus, even if the battery 4 is overcharged to generate hydrogen, oxygen, etc., these gases can be exhausted to the atmosphere. On the other hand, the exhaust-hood 5 may be filled with the gas generated from the battery 4 to raise the internal pressure so that the gas may be exhausted to the atmosphere by a difference between the internal pressure and atmospheric pressure. |
