| 摘要 |
<p>PROBLEM TO BE SOLVED: To dispense with a complicated combination to reduce cost by using an ECU(electronic control unit) in common for different vehicle specifications. SOLUTION: A pitch angle corresponding to an inclination angle to a horizontal plane in the optical axis direction of a headlight 30 is computed by a CPU 21 in an ECU 20 on the basis of a rear vehicle height value detected as the inclination information of the vehicle by a vehicle height sensor 11, using an intrinsic control constant corresponding to the specifications of the vehicle, preset by a specification discrimination signal, and the optical axis direction of the headlight 30 is adjusted on the basis of the pitch angle. Since the control constant in the ECU 20 is thus set corresponding to the specifications of the vehicle, the ECU 20 can be used in common without strain for various vehicle specifications, so that the complicated combination is dispensed with, and cost can be reduced.</p> |
