| 摘要 |
PURPOSE: A LED light bulb for traffic signal lamp is provided to prevent a traffic accident effectively in advance by increasing visibility and discrimination of a driver. CONSTITUTION: A spiral electrode part(11) to install an electric bulb body(10) is installed on a center of the electric bulb body, and a semi-circular board holder(12) is installed in front of the spiral electrode part. A driving circuit board(16) and a circular PCB board(14) having a plurality of LEDs(13) are installed in front of the board holder. The plurality of LEDs fixed to the PCB board installed at the end section are installed vertically toward a traffic signal lamp header, and the plurality of LEDs fixed to the other stacked PCB board are arranged slantly. The driving circuit board is installed in a front center of the board holder, and a diameter of each PCB board is formed conically from the most adjacent PCB board to both sides of the driving circuit board. |
