| 摘要 |
<p>PURPOSE:To secure safety when an abnormal condition occurs in a signal responding to the preset illuminating angle position. CONSTITUTION:A setting device 1, a right headlamp driving unit 2, and a left headlamp driving unit 3 are constructed as shown in a figure. When a line L1 is broken during an adjusting operation of an illuminating angle position, a voltage VSpR of a point P1R is abnormally increased in the driving unit 2, and an output of CP3R is turned to (L), Q5R is turned on, a comparison output is turned to (H) according to the increase of non-reversed input voltage of CP2R. In this way, the illuminating angle position of the right headlamp is fixed in the lowermost position. On the other hand, a voltage V1 of a point P0 is abnormally reduced in the setting device 1. Therefore, a voltage VSpL of a point P1L in the driving unit 3 is abnormally increased, and the illuminating angle position of the left headlamp is fixed in the lowermost position.</p> |
