Passive acousto-optic voice safety warning device

The utility model discloses a passive acousto-optic voice safety warning device which comprises a warning board, a solar panel, an acousto-optic assembly, a power supply module, an accessory box and a shell, the accessory box is arranged above the shell, and the accessory box is detachably connected...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HE CHANGBO, FU YUANHONG, ZHANG HONG, ZENG YANG, JIANG JINGCHEN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING ALARM SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION ELECTRICITY GENERATION LABELS OR NAME-PLATES ORDER TELEGRAPHS PHYSICS SEALS SIGNALLING SIGNALLING OR CALLING SYSTEMS SIGNS SYSTEMS FOR STORING ELECTRIC ENERGY
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