System for prolonging service life of high-power LED lamp

Abstract

The invention provides a system for prolonging the service life of a high-power LED lamp. The system for prolonging the service life of the high-power LED lamp comprises a PFC module and a DC-DC module which is connected with the PFC module. The DC-DC module is connected with a LED lamp load. The system for prolonging the service life of the high-power LED lamp is characterized in that a digital temperature sensor and a cooling fan which are connected with an MCU control module are arranged outside the LED lamp load. The MCU control module is connected with a DIM pin of the DC-DC module. The MCU control module achieves the power adjustable function through adjustment of the output current of the DC-DC module by the MCU control module. The system for prolonging the service life of the high-power LED lamp has the advantages that PWM intelligent speed adjustment is conducted on the cooling fan according to the various temperature states of the LED lamp, accumulation of dust is effectively reduced, normal operation of the cooling fan is guaranteed, the cooling requirement is met, and therefore the service life of the high-power LED lamp is prolonged.

Description

technical field [0001] The invention relates to an LED street lamp control system, in particular to a system for prolonging the service life of a high-power LED lamp. Background technique [0002] LED lighting technology is a low-power, high-brightness, green and environmentally friendly lighting technology developed in recent years. High-power LED street lights have created a precedent for LED lighting. Compared with traditional high-pressure sodium lamps under the same illuminance, it can save more than 60%. As we all know, LED lamps, like traditional light sources, will generate heat during operation. LED lamps are under the action of external energy, and the radiative recombination of electrons and holes results in the electric effect that converts 30-35% of the energy into light energy, while The lattice vibrations that occur through non-radiative recombination convert the remaining 65-70% of the energy into heat. LED is very sensitive to temperature, and only when th...

AI Technical Summary

Problems solved by technology

Therefore, the current high-power LED lights generally use active cooling methods, that is, use fans to dissipate heat, and the fans work at full speed. Since the LED lights work in a dusty environment, the life of the fans is seriously affected. When the fans cannot rotate due to dust, LED lamps cannot work properly due to heat dissipation problems, or even damaged

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