| 摘要 |
PURPOSE: A road sign device is provided to be operated without being supplied with power from the outside and to obtain uniform illuminance with less energy by using an LED light guide plate. CONSTITUTION: A road sign device comprises a base plate (10), a lighting plate (20), an upper plate, a first sign part (40), a second sign part (41), a power supply part, and a supporter. The power supply part supplies power to the lighting plate using solar light and wind power generation systems at the same time. The lighting plate includes a light guide plate and a plurality of LEDs (22). The LEDs are installed on both sides of the lighting plate with separate driving parts and are individually turned on or off. |
