PISTON TYPE ROAD SAFETY REFLECTOR

摘要

The present invention relates to a road sign stud capable of efficiently preventing damage and separation due to a load or friction of a vehicle running thereon by converting an impact acceleration generating when the vehicle passes thereon into an impact acceleration, preventing a piston unit from being separated from an upper housing, reducing a noise, remarkably decreasing a damage to a reflector unit and replacement of parts due to the load or friction of tires of the vehicle running thereon by preventing the reflector unit from coming in contact with the tires of the vehicle running thereon, increasing fabrication performance by making assembly or disassembly of the upper housing and lower housing and the piston unit and upper housing possible without using separate coupling units and dramatically increasing visibility thereof by installing the reflector unit in the piston head, wherein a reflective surface can be installed to face an entering vehicle and controlled in accordance with a guide and moving direction of the entering vehicle.