发明名称 |
Illuminated road sign |
摘要 |
An illuminated sign (2) comprises a sign panel (5) and at least two elements of electroluminescent material (14, 15) each element being individually selectively actuable and arranged to emit light so as to illuminate the sign panel. Each element may be used as a photodetector or a photo-emitter. A retro-reflective strip (10) may provide additional visibility.
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申请公布号 |
US2004244246(A1) |
申请公布日期 |
2004.12.09 |
申请号 |
US20040483352 |
申请日期 |
2004.07.16 |
申请人 |
SMITH STEPHAN TREVOR;WALTER MARK SOUTHGATE;BODECKYJ MIKE |
发明人 |
SMITH STEPHAN TREVOR;WALTER MARK SOUTHGATE;BODECKYJ MIKE |
分类号 |
G09F13/22;G09F19/22;(IPC1-7):G09F13/22 |
主分类号 |
G09F13/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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