| 摘要 |
<p>PURPOSE: A signpost attached on a guardrail for a curved road using a solar cell is provided to enable a driver to easily and accurately recognize the sign post at a remote distance through LEDs or EL sheets. CONSTITUTION: A signpost attached on a guardrail for a curved road using a solar cell comprises a power supply unit(20), a sensor unit, and a sign unit. The power supply unit is integrally attached on a guardrail and supplies power to the sensor unit. The sensor unit is attached on the guardrail and is electrically connected to the power supply unit. And the sensor unit senses whether a vehicle enters a road. The sign unit is attached on the guardrail and has a first sign unit(30) and a second sign unit. The first sign unit indicates the traveling direction of a vehicle. When the entry of the vehicle is sensed, the second sign unit displays a danger warning signal.</p> |
