| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a feeling of depth and the good appearance when a marker lamp is not lit simultaneously by forming diffusion steps in the front and a side part of a valve, forming a light shielding part or/and step in a head top part, and providing a valve cap having an outward shape which matches with a surface pattern of a reflector on the whole. SOLUTION: As for a valve cap 20A, a cross section of its side part 21 is regular octagon, a shape of its head top part 25 is a flat stepped regular octagonal cone which matches with the side part 21, and the whole of the valve cap 20A is constituted by an integrally molded body which has a shape of square polyhedron and is made of synthetic resin. When a marker lamp is not lit, a reflector 12 and the valve cap 20A are visible through a clear front lens 18, but a valve 16 is hidden by the valve cap 20A and is not visible at all. Moreover, a difference in quantities of light which is introduced into a valve positively opposing region 18a and a valve non-positively opposing region 18b in the front lens 18 is smoothed by a diffusion step formed in the side part 21 of the valve cap and a retroreflection face 27 formed in the head top part 25 so that the whole front lens 18 emits light substantially uniformly.</p> |
