| 摘要 |
<p>PURPOSE: An automatic sensor lamp having a crime prevention function is provided to prevent the invasion of an external person by installing an alarm device at a sensor for power consumption saving. CONSTITUTION: A power supply circuit(11) supplies a constant DC voltage by rectifying an AC voltage. A sensor part(12') senses the entrance of a person. Amplification circuits(13',13") amplify a sensing signal inputted from the sensor part. A micom(14) controls to turn on/off an electric light lamp(16) and to generate an alarm according to transmission information of the sensor part. And a turn-on driving circuit(15) turns on the electric light lamp according to the control of the micom, and a crime prevention alarm driving circuit(17) generates an alarm by operating an alarm part(19) for a time set by a timer(20).</p> |
