| 摘要 |
An automatic controller of an outdoor advertizing signboard, a street lamp and a security lamp during sunrise and sunset includes a central processing unit U1, a decoder circuit U2, a read only memory (ROM) U3, and a memory circuit U4. A switch connected to such light sources as the outdoor advertizing signboard, the street lamp and the security lamp can automatically be controlled in response to a computer program in which sunrise and sunset time data variable throughout 365 days and time data before and after sunrise and sunset, i.e., second, minute, hour, day, month and year are set. As a result, optimal adverstizing effect can be achieved by automatically turning on the light sources at sunset time and, at the same time, power consumption can largely be reduced by automatically turning off the light sources at sunrise time.
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