| 摘要 |
PURPOSE: A device is provided to prevent the drowsiness of a driver by making the headrest of a drive seat simply vibrated through switch. CONSTITUTION: A device comprises each vibration plate for vibrating the headrest of a drive seat rightward and leftward through a signal of a main switch, combined on the right and left sides of the back face of the headrest, a vacuum cylinder combined on a certain position of a rear circumferential face to vibrate each vibration plate back and forth, a vacuum tank for supplying and storing vacuum pressure to move the piston of the vacuum cylinder straight, a control valve for controlling the vibration of the head rest by transmitting and blocking the vacuum pressure to the vacuum cylinder, an electromagnetic for controlling the opening and closing state of the control valve and an ECU(Engine Control Unit) for controlling the state of magnetization of the electromagnetic through the signal output by inputting the signal of the main switch.
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