| 摘要 |
<p>A sun visor device is provided to detect the direction of sun light, calculate a rotation angle of the sun visor, and send a driving signal to a driving unit to drive a power transmission unit to rotate the sun visor toward the sun light, thereby preventing glaring on the eyes of an operator. A sun visor device comprises a driving unit(11) installed on a roof(3) of a cabin(1) of a heavy equipment vehicle, a power transmission unit(13) receiving the power from the driving unit, a sun visor(15) having one end connected to the power transmission unit and rotated inside the cabin by the rotation of the power transmission unit, and a heat sensing unit(17) installed on the cabin roof for detecting the change in position of the sun relative to the rotation of the cabin. A controller(19) calculates a sun visor rotation angle based on a sun light radiating direction signal input from the heat sensing unit and the preset position of the sun visor, and determines the driving direction of a motor. The controller then sends a driving signal to the motor to rotate the power transmission unit in forward or reverse directions to rotate the sun visor to the calculated rotation angle toward the sun light. The motor is operated only while the driving signal is sent from the controller to the motor. The heat sensing unit includes a transparent housing, and plural heat sensors disposed in multiple directions on an inner side of the housing.</p> |
