Vehicle lighting unit control device

A vehicle lighting unit control device installed in a vehicle, wherein:

• the vehicle comprises
• a lighting unit, and
• a fan device configured to cool the lighting unit;
• the fan device comprises
• a fan, and
• a motor configured to rotate the fan;
• the fan device is so configured that the motor is rotated by electrical power supplied from the vehicle lighting unit control device, and that protective operation is performed to reduce or interrupt an input of the electrical power to the motor if the fan goes into a first locked state;
• the vehicle lighting unit control device comprises
• a lighting unit control section configured to control the lighting unit,
• a power supply section configured to generate and output the electrical power to the fan device, and
• a power supply control section configured to control output of the electrical power to the fan device from the power supply section;
• the power supply control section comprises
• a rotation information acquisition section configured to acquire rotation information indicating rotational frequency of the fan, and
• an output interruption section configured to determine whether the fan is in a second locked state, based on the rotation information acquired by the rotation information acquisition section, and interrupt output of the electrical power to the fan device from the power supply section if the fan is in the second locked state;
• the second locked state is set to be the same as the first locked state, or set to occur earlier than the first locked state if the rotational frequency of the fan is decreasing;
• and
• the output interruption section is configured to interrupt output of the electrical power before the fan device performs the protective operation, if the second locked state has occurred.