| 摘要 |
A LED signboard includes a transparent base panel carrying a design of a fluorescent substance and having a groove formed in the back side and extending around the border, and a programmable controller-controlled LED light set mounted in the groove of the transparent base panel to hold LEDs in a parallel manner relative to the extending direction of the transparent base panel so that the LEDs emit light into the transparent base panel to illuminate the design in the transparent base panel subject to a predetermined order and frequency and at the same time the glow of the LEDs goes to the outside of LED signboard to show an lacing lighting effect.
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