ACTUATOR AND VEHICLE LIGHTING DEVICE

A motor causes a shaft of an actuator to be axially displaced, at least part of a circuit for driving the motor being mounted on a substrate (75). A notch (75f) is formed in an end edge of the substrate (75). A protrusion (71q) is formed inside a case (71). The protrusion (71 q) is fitted into the notch (75f), whereby the substrate (75) is independently supported in the case (71).