| 摘要 |
An electronic display board for a sphere type display using an effect of persistence of vision is provided to reduce manufacturing cost and power consumption by forming an electronic display board with a small number of LEDs. An LED supporter(10) is formed with a shape of semicircle and has a predetermined length. Red, green, and blue LEDs(20) are installed along an outline of the LED supporter(10). A body(30) is connected to the LED supporter(10) by a connecting member. A motor(40) is provided to rotate the body(30) to the horizontal direction. A motor driver(50) is provided to drive the motor(40). A position sensor(60) is provided to sense a present angle of the motor(40). A storage part(70) is provided to store advertising data. A controller(80) is provided to control the motor(40) through the motor driver(50) and turns on/off the LEDs of the corresponding position according to the advertising data corresponding to the present position of the motor sensed by the position sensor(60).
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