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A display board assembly, which includes a start unit connected to an end unit with a variety of intermediate display units set in therebetween in a line. By means of color contrast and diaphaneity difference the symbols on the intermediate which show a certain meaning collectively can be clearly se

A display board assembly, which includes a start unit connected to an end unit with a variety of intermediate display units set in therebetween in a line. By means of color contrast and diaphaneity difference the symbols on the intermediate which show a certain meaning collectively can be clearly seen in the day. When in the dark, a photosensor automatically triggers the light emitting diodes of the intermediate display units to illuminate the symbols thereon.

대표청구항 ▼

A display board assembly comprising: a plurality of symbol display units, each having a front panel attached to a bottom block and a printed circuit held therebetween, said bottom block having an edge about its periphery extending perpendicularly from said bottom block toward said front panel defini

A display board assembly comprising: a plurality of symbol display units, each having a front panel attached to a bottom block and a printed circuit held therebetween, said bottom block having an edge about its periphery extending perpendicularly from said bottom block toward said front panel defining a top edge, a bottom edge and two side edges, two L-shaped projections extending from one of said side edges, two L-shaped recesses matching said L-shaped projections arranged within another of said two side edges; said front panel having a symbol thereon; and said printed circuit board including a plurality of LEDs corresponding to said symbol of said front panel, a power plug at one side thereof and a power socket at another side thereof adapted to receive said power plug: said plurality of symbol display units joined together with their respective L-shaped projections received in respective L-shaped recesses of a neighboring symbol display unit and with their respective power plug received in a respective power socket of said neighboring unit; and a start unit having L-shaped recesses receiving L-shaped projections from one of said symbol display units, and an end unit having L-shaped projections received in another of said symbol display units, said start and end units together with said plurality of symbol display units forming a self-supporting structure with said start and end units each including a pair of holes and screws for fastening said display board assembly to an external surface, said end unit including a window with a photosensor therebehind for sensing the intensity of ambient light and turning on said LEDs when it is dark and an electric power supply device for converting regular alternating current power into low voltage direct current power.