| 摘要 |
PROBLEM TO BE SOLVED: To simplify the mounting of an aiming screw and make the assembly of a coupling part simply. SOLUTION: At least one of the coupling parts of a reflector 5 with a lamp body 2 is coupled by an aiming screw 6, and a supporting hole 23 is formed in the rear wall 21 of the lamp body, wherein the aiming screw 6 has a screw shaft part 9, a part to be supported 12 rotatably in the hole 23, and a head part 13, and at the front extremity of the part 12, a flange 16 is formed which contacts with the edge of the front opening of the hole 23. The head 13 has a regular hexagonal section, is equipped with a resilient detent 20, and is provided in the central part with a coupling hole in regular hexagonal shape, and the head of the aiming screw inserted through the hole 23 is fitted in the coupling hole in an operation gear 33 having teeth 35 on the surface confronting the back surface of the rear wall 21, wherein the resilient detent 20 is detained with the edge of the opening of the coupling hole 41 so that the operation gear is prevented from slipping off from the aiming screw 6, and the teeth of the gear are fed by an operating member inserted between the teeth and rear wall 21 so that the gear is rotated. |
