| 摘要 |
<p>A road marking stud comprises a flat plate (1) having a central rib (5) in which are embedded reflector beads (9). The plate and rib are moulded from a light-collecting and light-emitting transparent plastics material incorporating a fluorescent dye stuff. A flat surface (5) of the plate acts as a light-collecting area while an edge (4) of the plate and chamfered side (7) of the rib act as light-emitting surfaces which will glow even in overcast conditions due to total internal reflection within the plate. <IMAGE></p> |
