Automatic level control device for car headlights

An automatic leveling device for automotive headlamps includes a pair of left and right headlamps in which the optical axis L can be inclined in a vertical respect to the body direction by driving operations of the respective motor 10 (10L, 10R), a single control device 16 for the simultaneous control of the driving operations of the left and right motor 10, a vehicle speed sensor 12, a level sensor 14 and a storage section 20 for storing the detected by the level sensor 14 pitch angle data of the vehicle, the control device 16, the respective motors 10 controls such that the respective optical axes L the headlamps are set to a constant inclination with respect to the roads on the basis of the thus detected pitch angle data, and the motors are driven only if the difference between the detected pitch angle data and at the last drive control the pitch angle data used motors is equal to or greater than a predetermined reference value which is larger than a pitch angle equivalent to a hysteresis width of each of the left and right motor drive circuits DOLLAR F1 Consequently, there is not that only one of the motors is driven the disadvantage, and always be both motors driven simultaneously. Therefore, the optical axes of the left and right headlamp always in the same position in the vertical direction are ...