| 摘要 |
PURPOSE: An advertisement board using a light emitting diode is provided to change the color of images by including a red, green and blue(RGB) light emitting diode(LED) array. CONSTITUTION: A pre-set image is engraved or a screen-printed on an acrylic plate(120). An RGB LED array(150) is mounted on the one side or both side of the acrylic plate to be corresponded to the image. Power is supplied from the outside. Based on a RGB combination, the color of the image is changed. An advertisement sheet(130) displays the contents of an advertisement. Light source(160) is mounted on the rear side of the advertisement sheet. |
