Street light power-saving device

Abstract

A street light power-saving device relates to the technical field of street light control and is provided with an air switch connected with a power supply; the other end of the air switch is connected with the input end of an auto-transformer and the input end of a by-pass contactor respectively; and the switch output end of the auto-transformer and the output end of the by-pass contactor are connected with a thermal relay respectively. The street light power-saving device can save electricity by 20 percent to 40 percent by controlling the switching time of a street light through the combination of a time control switch or a celestial clock and a main switch, has independent by-pass, a manual or automatic switching function and protective functions for short circuit, overload and the like.

Description

technical field [0001] The invention relates to the technical field of street lamp control. Background technique [0002] Although energy-saving lamps are more than 50% more energy-efficient than high-pressure sodium lamps, their irradiation distance is short, the illuminance cannot meet the needs of the road surface, and the later maintenance costs are high, so they can only be used for indoor lighting. Street lights currently used for lighting include gas discharge lamps such as high-power LEDs and high-pressure halogen lamps, high-pressure sodium lamps, metal halide lamps, and yellow lights (the light source is yellow). [0003] High-power LED lights can directly solve the secondary light extraction and light loss problems that traditional spherical light sources must rely on light emission to a large extent. The uniformity of the light irradiation surface is controllable, and it can also avoid traditional light sources from "lighting under the light" The waste of light ...

AI Technical Summary

Problems solved by technology

However, there are still some shortcomings: First, the reliability of LED street lamp modularization still needs to be strengthened, and LED street lamps will also fail due to driving circuits and other reasons.

However, the street lamp power supply system in the traditional sense is that a certain street lamp or a certain section of street lamp is powered by a transformer to the control cabinet, and then the control cabinet supplies power to each street lamp. Due to the long line, the voltage of the street lamp at the end is often insufficient. Invisibly increase the transmission voltage, because there is no quite accurate supply, it often causes a lot of waste of electric energy

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