LIGHTING CONTROL UNIT FOR VEHICLE LIGHTING FIXTURE

摘要

A lighting control unit for vehicle lighting fixture is provided to control the electrical energy consumption and stop rapidly the operation of the series regulator. The lighting control unit(1) for vehicle lighting fixture comprises the switching regulator(10), and N switches through N current detectors through the first the first. The switching regulator supplies the driving current to the N semi-conductor light source(40-1 through 40-N). The Nth detectors are serially connected to the N semi-conductor lights source. The N current detector through the firsts detects the driving current. The comparison output is transmitted to the comparing Nth comparison unit. The control means has two or more abnormality detection portions. The control means switch off N switches after the fixed time passes.