Alternating current direct driving intelligent dimming LED (light emitting diode) energy saving street lamp

Abstract

The invention relates to an alternating current direct driving intelligent dimming LED (light emitting diode) energy saving street lamp, which comprises an input protection unit [1], a rectification unit [2], an alternating current direct driving controller [3], a photosensitive sensor [4], an intelligent dimming unit [5], an energy buffer unit [6] and an LED unit [7], wherein the alternating current direct driving controller drives different groups of LEDs to give out light according to the sizes of the instant values of the pulse voltage after the rectification; the intelligent dimming unit converts environment illumination detected by the photosensitive sensor into a digital signal, and judges whether the current state is a normal lamp turning-on state or a daytime maintenance detection turning-on state, so that whether the dimming curve needs to be called or not is determined. The alternating current direct driving intelligent dimming LED energy saving street lamp has the advantages that the alternating current direct driving controller is used; a large-volume filtering capacitor is not needed; the power factor and the efficiency are high; the heating quantity is small; the reliability is high; the energy buffer unit is used, so that the flickering phenomenon of the alternating current direct driving LEDs is overcome; the dimming can be performed according to the curve set by a program; the deep energy saving can be facilitated.

Description

technical field [0001] The invention relates to an LED lighting lamp, in particular to an AC direct-driven intelligent dimming LED energy-saving street lamp, which belongs to the technical field of electric lighting energy saving. Background technique [0002] LED (Light Emitting Diode) is a new type of light source, which has the advantages of low power consumption, high brightness, small size, light weight, and long life. Street lamps using LEDs as light sources have the advantages of good visibility, energy saving, fast response, etc., gradually replacing incandescent lamps, tungsten halogen lamps, mercury lamps, sodium lamps, metal halide lamps, etc. However, LED street lamps currently using AC mains usually require rectification and filtering, and filtering requires large-capacity capacitors, which are large in size and short in life, and the harmonic content of pulse current formed by rectification and filtering is large, which reduces the power factor of the lamps and...

AI Technical Summary

Problems solved by technology

However, LED street lamps currently using AC mains usually require rectification and filtering, and filtering requires a large-capacity capacitor, which is large in size and short in life, and the harmonic content of pulse current formed by rectification and filtering is large, which reduces the power factor of the lamp The performance of LED lamps

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