LED street lamp driver high in efficiency and brightness and low in energy consumption and temperature rise

Abstract

An LED street lamp driver high in efficiency and brightness and low in energy consumption and temperature rise is of an effective circuit design. The driver supports a one-path series operation mode of an LED light-emitting board, the heat dissipation problem of a street lamp can be solved well, and it is ensured that the working temperature of the LED street lamp is always kept in a range of 25-50 DEG C. Specific effective measures are as follows: 1. A timed automatic dimming technology and an LED light-emitting board one-way series design are adopted, a rated current of an LED chip with monolithic power of 1 W is a total working current of the street lamp, an aluminum casing which dissipates heat well is utilized to perform heat dissipation, so that the working temperature of the streetlamp is kept below 50 DEG C, a total working current value of the street lamp is reduced, and the power consumption of the street lamp is reduced by about 40%. A timed automatic dimming function is utilized, the power of the street lamp is reduced by about 20% after dimming, and the average power consumption of the street lamp at night is reduced by 10% or above; one-way series wiring is adopted for an LED string of the light-emitting board, so the power consumption can be reduced by 40%, and the total power consumption can be reduced by a half or above. 2. A power factor correction circuit design is used to make the power factor of the LED street lamp reach about 0.9.

Description

technical field [0001] The invention relates to an LED street lamp driver with high efficiency, low energy consumption, high measurement and low temperature rise. Background technique [0002] The current LED street lamp drivers on the market only support the series-parallel connection mode of the light-emitting board circuit. As the power of street lamps increases in parallel circuits, the number of parallel branches also increases, so the total operating current of street lamps also increases, and the temperature of street lamps is converted from electrical energy into heat energy. The increase in operating current causes electrical energy to be converted into heat energy. The increase in the amount of heat energy will increase the working temperature of the street lamp, which indirectly wastes a lot of electric energy, and the increase in the temperature of the street lamp will cause the LED to have light decay, and in severe cases, the street lamp will be damaged. Cont...

AI Technical Summary

Problems solved by technology

As the power of street lamps increases in parallel circuits, the number of parallel branches also increases, so the total operating current of street lamps also increases, and the temperature of street lamps is converted from electrical energy into heat energy. The increase in operating current causes electrical energy to be converted into heat energy. The increase in the amount of heat energy will increase the working temperature of the street lamp, which indirectly wastes a lot of electric energy, and the increase in the temperature of the street lamp will cause the LED to have light decay, and in severe cases, the street lamp will be damaged.

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