| 摘要 |
<p>PURPOSE:To enable aiming adjustment irrespective of brightness in the circumference by making this aiming adjustment achievable as checking a fact that the center of a beam of light conducted out of an illuminant passes through the center of an opening of a horizontal member. CONSTITUTION:An aiming adjustment checking mechanism 21 is installed in a spot corresponding to the upper part of an illuminant 3 on top of a reflector 4, and it is composed of a base plate 22 clamped onto the reflector 4, a horizontal member 23 supported by this base plate 22 free of rocking motion and a light conducting part 24, whose bottom end 24b is installed as piercing through the reflector 4 and its upper end 24a extends up to the vicinity of the horizontal member 23. In a horizontal plate 28 of this horizontal member 23, there is provided an opening 31 similar to the upper end 24a in a part corresponding to an upper part of the upper end 24a of the light conducting part 24. In a state of holding the horizontal member 23 in horizontality, an operator sights the upper end 24a of the light conducting member 24 through the opening 31 of the horizontal member 23, and a rocking angle of the reflector 4 is adjusted by an aiming adjusting mechanism (unillustrated herein) so as to have the aiming upper end 24a housed in this opening 31, thus the aiming adjustment takes place.</p> |
