| 摘要 |
PURPOSE: An indication lamp for a road is provided to minimize electricity consumption by lighting multiple LEDs depending on the brightness of sunlight. CONSTITUTION: An indication lamp for a road comprises a condensing lens(19), a solar cell(17), an electricity condensing unit, a circuit board(15), optical sensors(50), LEDs, and upper and lower bodies(11,13). The solar cell collects sunlight using the condensing lens. The electricity condensing unit stores the collected energy. The circuit board is operated by the electricity condensing unit. The optical sensors detect the brightness of external light and transfer the detected information to the LEDs. The LEDs are lit depending on the detected information. The condensing lens is fixed to the upper and lower bodies. The lower body is coupled to the upper body.
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