| 摘要 |
PURPOSE: A pest repeller for streetlights is provided to prevent the streetlights from being contaminated by insects in order to keep the streetlights clean in a long period. CONSTITUTION: A pest repeller comprises the following units. A main body with a fixture comprises a metal net connected to a high pressure oscillator, an LED flash unit(16), and an ultrasonic oscillator(17). A direct current transition is connected to the high pressure oscillator(14) with the metal net, and a PWM(Pulse Width Modulation) oscillator(15) with the LED flash unit. The PWM oscillator is connected to a tuner(18) that is linked to the ultrasonic oscillator.
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