| 摘要 |
The light-reflective signs no longer require current. The signs are completely lit up by virtue of external incident light radiation. Using light-reflective signs a great deal of current could be saved where today there are lit-up signs everywhere which consume current each night. The light-reflective signs are completely lit up when any light source shines upon them. The signs are assembled from a wide variety of colours. The light-reflective signs can be used for traffic signs, not-in-use signs, advertising letters and signs, warning signs, priority signs, information-arrow signs, systems for warning people driving the wrong way down a motorway and lighted signs in discotheques.
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