PURPOSE:To protrude the body of a headlight only through the release of a lockup means in a retracted position, by using a spring to energize the light body in the direction of the protrusion, using a stopper to set the protruded position and providing the lockup means for securing the light body in the retracted position. CONSTITUTION:A cowling 6 as the outside sheet of a vehicle body is provided with an opening 20 in which a light body 25 is provided so that it can be protruded and retracted. The light body 25 is energized in the direction of the protrusion by a torsion spring. To retract the light body 25, it is pressed down against the spring. At that time, a wedge tip 53 is engaged in the recess 44 of the light body 25 to lock it up. To protrude the light body 25, an operating lever 61 is swung to disengage the tip 53 from the recess 44 so that the light body 25 is automatically protruded by the force of the spring. At that time, the tip 53 can be engaged with in a recess 43 to lock the light body 25.