| 摘要 |
A LED bulletin board for an indoor advertisement is provided to enhance a price competitive power by reducing a manufacturing cost of a bulletin board. A LED bulletin board(1a) for an indoor advertisement includes a printed circuit board(21), a LED module, a front display part, and a light interference preventing groove. The LED module(2) includes a plurality of LEDs(22) arranged on a front and a LED driving circuit device mounted on a rear of the printed circuit board. The front display part(12) is vertically and horizontally formed in order to display advertisement contents by a light emitted from the LEDs. The light interference preventing groove(11) is vertically and horizontally formed between the front display parts. |
