Temperature-controllable high-power light-emitting diode (LED) lighting system

Abstract

The invention belongs to the technical field of illumination, and relates to a temperature-controllable high-power light-emitting diode (LED) lighting system. The lighting system comprises a power-free heat pipe, a revolution speed-controllable fan, a heat-sensitive sensor, a microprogrammed control unit (MCU), an LED driving chip, a power control circuit and a multichannel LED module. The base of the LED module is closely fit with one end of the power-free heat pipe so as to realize heat dissipation through conduction, the other end of the power-free heat pipe is connected with the revolution speed-controllable fan, the heat-sensitive sensor is encapsulated between a fluorescent powder layer and a plastic lens layer of the multichannel LED module, the output end of the heat-sensitive sensor is connected with the MCU and outputs a temperature sensing curve. The MCU is internally provided with and operates a fuzzy logic dynamic control program and is used for sending control signals to the LED driving chip and the fan. The closed loop dynamic branch control of the temperature of the high-density high-reliability high-power LED lighting system can be realized, the temperature is dynamically adjusted by utilizing configurable fuzzy logic intelligent control, the luminous efficiency of an LED is guaranteed.

Description

technical field [0001] The invention relates to a device in the technical field of LED lighting, in particular to a temperature-controllable LED lighting system with power above 100W. Background technique [0002] High-brightness light-emitting diodes have the characteristics of low power consumption, long life, fast response, small size, no pollution, and easy integration. They are a new generation of light sources that have revolutionized and upgraded the traditional lighting industry. Especially today when energy conservation, emission reduction and environmental protection are the themes, semiconductor lighting has become a new economic growth point, and thus has been highly valued by governments and industries of various countries. [0003] According to the Journal of Hainan University, Volume 28, Issue 3, "Analysis of Chinese LED Heat Dissipation Technology Patents" in September 2010, for the existing LED light efficiency level, 70% to 80% of the input power is convert...

AI Technical Summary

Problems solved by technology

However, the connection method between the patented sensor and the LED array does not break through the array package, and goes deep into the interior of the LED array, so it is difficult to obtain the accurate temperature of the LED chip

At the same time, the patent does not give a solution on how to control the current of the LED chip

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