| 摘要 |
PURPOSE: An apparatus for producing sounds from a signboard is provided to make a signboard give audio-visual effects to upgrade its advertising effects. A general signboard merely gives some visual information. The signboard using optical fiber can produce sonic information after sensing around with a sensor. CONSTITUTION: An apparatus for improving a signboard's advertising effects is provided comprising a visual board device using optical fiber, an infrared sensor enabling to recognize whether a man comes into its sensible range, devices for sensing and processing sounds, a device for memorizing data and a device for automatically regulating light and controlling the system. The signboard producing sounds enables to give good impression to passengers as well as to improve its advertising effects.
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