| 摘要 |
PURPOSE:To adjust irradiation in a desired direction by providing a drive system of an apparatus main body for turning the apparatus main body, as well as a drive system of an optical system unit for turning the optical system unit. CONSTITUTION:A lighting apparatus main body 10 on which a lighting opening 11 is formed on the under surface by driving of a stepping motor 32 of a drive system 31 of the apparatus 10, is rotated around the shaft core of a rotational shaft 30 in a vertical direction, and an irradiation direction of panning is adjusted thereby. An optical system unit 15 is rotated around a shaft axis of horizontal rotational spindle parts 19, 20 as a center, by driving of a stepping motor 24 of a drive system 21 of the optical system unit 15, and irradiational direction of tilting is adjusted thereby. The weight of the apparatus main body 10 is balanced by a drive system of the optical system unit provided on the side of one rotational spindle part 19 of the optical system unit 15 and by parts provided on the side of the other rotational spindle part 20, and an inertial moment at the time of rotation around the shaft axis of the apparatus main body 10 in vertical direction, can be reduced. Since the apparatus main body 10 is stably rotated, and the optical system unit 15 is supported by the rotational spindles 19, 20 so that it may be rotated, the rotation is smoothed. |
