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LIGHT SOUND SIGNAL ELEMENT, LIGHT SIGNALING DEVICE AND LIGHT SIGNAL SYSTEM
LIGHT SOUND SIGNAL ELEMENT, LIGHT SIGNALING DEVICE AND LIGHT SIGNAL SYSTEM
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机译:灯光信号元件,灯光信号装置和灯光信号系统
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摘要
A light signal unit (1) has optical elements (4) separated from the parallel connected rows of light emitting diode (LED) clusters (3) by a greater distance (a) than the width (d) of the clusters.
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