MARKER DEVICE AND ITS SNOW-SHED HOOD

摘要

PURPOSE: To improve the recognition of a marker by using the synergetic effect of both light source beam and reflected light. CONSTITUTION: A reflective intensity mirror 22 formed with three reflection surfaces arranged in a right-angled triangularly conical shape and a light source (LED) 13 arranged at the optical axis of the reflective intensity mirror 22 are provided. Incident light is recursively reflected to the 180 deg. opposite direction by the reflective intensity mirror 22 and the light source 13 is lit and directed to the front direction or reflected by the reflective intensity mirror 22 to emit light, so that reflective intensity light and light source beam are synergetically effected and then highly recognized marking operation is allowed. The area of the reflective intensity mirror 22 can be easily be made larger and a reflective intensity mirror 21 constructed by plural reflective intensity mirrors 22 arranged in the same plane in a mutually connected condition provides reflective intensity effect over a wide area.