PURPOSE: To easily change the direction of light distribution with the change of the axial direction of a light distribution pattern by rotationally moving a light body to directions in vertical and horizontal planes and mounting a reflecting mirror structure to be rotationally movable around the axis of a reflecting mirror.

CONSTITUTION: A light body 3 is rotationally moved to a direction in a vertical plane at the contact of a supporting arm 3C with an engagement arm 4. The engagement arm 4 is slid on the protrusion 1b of a luminair mainbody 1 to rotationally move the light body 3 to a direction in a horizontal plane. With the rotational movement to directions in the vertical and horizontal planes, the inclination and the illuminating direction of a reflecting mirror are changed. A reflecting mirror structure 2 is rotationally moved to the supporting arm 3C around the axis of the reflecting mirror 2b. If the reflecting mirror structure 2 is rotationally moved as above-mentioned, a relationship between the major axis of an elliptically distributed light from a spot formed on an illumination plane and the axis of the rotational movement to adjust the inclination of the reflecting mirror 2b can be freely changed. On this account, light distribution can be easily adjusted while identifying light in the state that a lamp 7 is lit.