| 摘要 |
PURPOSE: A light interrupting apparatus for a vehicle is provided to minimize fatigue by sunbeam and headlight in driving, and to control a polarizing glass window by using power steering hydraulic pressure. CONSTITUTION: An automatic hydraulic polarizing glass operating device is composed of a polarizing glass(1) installed in a vehicle; a power steering hydraulic pump; a supply hose(15) connecting an outlet of the hydraulic pump to an injection nozzle(12) in the lower part of a central rod of the polarizing glass; a restoring hose(16) connecting an inlet of the hydraulic pump to a discharge port(20) formed in the lower part of the polarizing glass; a solenoid valve between the supply hose and the restoring hose opening the supply hose selectively; and a switch(14) controlling the solenoid valve. The restoring hose is opened, and the supply hose is closed with moving the solenoid valve forward in driving a button operating unit by a driver. Oil from the polarizing glass is returned from the discharge port to the inlet of the hydraulic pump through the restoring hose. The polarizing glass is controlled according to hydraulic pressure of the hydraulic pump by a control unit(17).
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