| 摘要 |
The invention is a self-contained solar powered back lighted sign using low voltage bright white LED lamps for a light source, the device comprising a sign encasement, an internal bright white LED light source, at least one white translucent dispersion panel, sign display medium, at least one transparent front panel, an internal rechargeable battery supply, electrical circuitry, a photo sensor and an at least one external solar generating unit. Plain white paper signs, transparencies and changeable lettering may by displayed in this device, providing for repeated low-cost change of the display medium on the device, the device being perpetual and self-contained providing its own cost-free electrical energy.
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