| 摘要 |
<p>A lighting device (1), comprising a gear (14) holding a lens holder (11) through guide rails (12a) and (12b) movably in longitudinal direction, forming a rack (13) along the moving direction of the lens holder (11), and moving in longitudinal direction integrally with the lens holder (11) while being meshed with the rack (13), an operating knob (15) installed on the outer surface of a lighting body (2) and moved in longitudinal direction while being rotated integrally with the gear (14), and a lens positioning mechanism (6) having a cam type lever (21) for locking the movement of the operating knob (15), wherein a specified number of gobos (9) are disposed on a holder support (10) in the state of being held by a holder (8) so as to be extracted from and inserted into the holder support (10), each holder (8) is formed by doubly disposing the gobo insert parts (45) and (46), and a reflector (4) is divided into a former part (4a) and a latter part (4b) and has a clearance (4c) between these both members (4a) and (4b), whereby, when a focus adjustment and a zoom adjustment are performed, the fine adjustment of the position of the lens (5b) can be performed easily and the fixing of the lens position after the adjustments can be performed easily, two types of gobos (9-1) and (9-2) of different sizes with high use frequency (coverage) can be held by one holder for gobo, and the cracking of the base metal and the separation of coating material of the reflector (4) can be prevented by suppressing the thermal effect of a bulb (3) on the reflector (4) to the minimum without impairing the optical characteristics.</p> |
