Heat dissipation fault warning method of LED lamp and heat dissipating device

Abstract

The invention relates to a heat dissipation fault warning method of an LED lamp. The substrate of an LED lamp module is provided with a heat dissipating device; the temperature of the substrate of the LED lamp module is detected by using a temperature sensor; when the temperature of the substrate is higher than the maximum temperature, a control circuit cuts off the power supply of an LED lamp; when the temperature of the substrate drops to be lower than the maximum temperature, the control circuit switches on the power supply of the LED lamp; when the temperature of the substrate raises again to be higher than the maximum temperature, the control circuit cuts off the power supply of the LED lamp again; by repeating in such a manner, the discontinuous lighting of the LED lamp is utilized to warn that the LED lamp generates a heat dissipation fault; street lamp managers know that the heat dissipating device of the LED lamp generates fault when finding the discontinuous lighting of the LED lamp, and the maximum temperature is smaller than the light attenuation temperature of the LED lamp. The method can enable the LED lamp with the heat dissipation fault to be very easily found by the street lamp managers, thereby, the LED lamp is maintained in time. Meanwhile, the temperature of the LED lamp can be controlled to be lower than the light attenuation temperature, thereby achieving the goal of protecting the LED lamp.

Description

technical field [0001] The invention relates to a heat dissipation failure warning method of an LED lamp for lighting, in particular to a heat dissipation failure warning method of an LED light and a heat dissipation device with failure warning and protection functions. Background technique [0002] In response to the requirements of the environmental protection era, the requirements for energy-saving and emission-reducing products are getting higher and higher, and the related lighting equipment also has white light due to the invention of LED blue light, and thus becomes a part of lighting, the so-called solid-state lighting (SSL) , The US Department of Energy has the SSL Association. The conversion of the power and luminous flux of a fluorescent lamp is about 15W=490lm~560lm, 20W=700lm~800lm, 30W=1160lm~1400lm, 40W=1700lm~1920lm. The conversion of 220V incandescent bulb power and luminous flux is roughly 10W-65lm, 15W-101lm, 25W-198lm, 40W-340lm, 60W-540lm, 100W-1050lm.....

AI Technical Summary

Problems solved by technology

But no matter how the efficiency is improved, there is a considerable problem, that is, the problem of heat dissipation has not been solved, so that the production of a perfect energy-saving lighting product has stagnated.

LED lamps are used normally and have a lifespan of 80,000 to 100,000 hours. However, because their radiators are exposed to the air for a long time, the heatsink itself will dissipate heat due to air pollution (exhaust gas and dust from automobiles or factories, etc.) Gradually, problems will arise, and the temperature will rise accordingly, reaching the light decay temperature point of the LED itself (the temperature point at which the life is broken), which will reduce the life of the LED lamp to 1,000 to 2,000 hours.

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