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The multi-chip LED has no illuminating focus due to its inherent disadvantages in structure, the illuminating optical system is unreasonable, and the useful light efficiency is relatively low (of course, several times stronger than the halogen lamp), and its advantages are not effectively exerted. For example, array type led, current up to 1000ma or more, basically just a penny coin size, heat dissipation becomes a problem. Can be led to the most fear is high heat, not bad, it is strange. At the same time, the production requirements of multi-chip LED are very strict, and each chip can not have a difference in performance. Otherwise, if the chip is broken, the whole machine will be finished. Overall, the lifetime of multi-chip LEDs is far from sufficient compared to single-chip LEDs.
The single-chip LED production process is simple, the quality is easy to guarantee, the heat generation is low, and the illuminating optical system is reasonable. It is an ideal device for the infrared lamp, and the theoretical service life can reach more than 100,000 hours. So, is it true that all single-chip LED lamps have a good life?
In fact, this is far from the case. There are many reasons for this. For example, some LED chips are very low in level and impurities are excessive; some production processes are not closed, and there are leakage phenomena; some use super power, rated 20ma, but use 50ma or more; some have no protection circuit, or Unreasonable circuit design, these will lead to a single chip led infrared light quickly broken.
In order to ensure the life of the infrared lamp, we must first select a high-grade LED chip. High-grade chips have high power, good consistency, high luminous efficiency, and low heat generation. A high-grade LED is 10 times better than ordinary LEDs, and the price is very expensive. Secondly, the optical system should be designed reasonably, the illumination should be uniform, the utilization rate should be high, and the heat dissipation should be fast. Third, we must strictly control the working voltage. Led is very sensitive to voltage, the voltage is slightly higher, the led die will burn off; and the voltage is slightly lower, the amount of luminescence will be greatly reduced. It is best to match the high-quality switching power supply. The AC input voltage is preferably well regulated from 170 volts to 270 volts to suit the harsh power supply environment. Fourth, the input power line is preferably resistant to high/low temperature, super soft and resistant to bending. There is a factory-produced infrared lamp, the input power cord can be used normally at a low temperature of 60 degrees and a high temperature of 250 degrees. The cable of minus four or fifty degrees is still soft like silk, and such a product is trustworthy.
[ Huaqiang Security Network News ] The life of the camera can reach more than 10 years. Can the life of the infrared lamp reach this level? To answer this question correctly, we must first understand the current manufacturing principle of the infrared lamp. At present, infrared lamps mainly have three manufacturing modes: 1, halogen lamp, 2, multi-chip led, 3, single chip led. Halogen lamp is a more traditional technology, with high energy consumption, large heat generation and short service life. Due to its inefficient use, it is estimated to gradually fade out of the market. Multi-chip LEDs are also available in two versions, one containing 4 to 8 chips: the other is an array of illuminators with 10 to 30 chips. Why do you do more chips? Some theories from manufacturers are: Insufficient illumination distance of infrared lamps is because energy is not enough, more chips are brought together, of course, the energy is large, and it is taken for granted that the illumination distance is farther. Of course, farther distances require more energy, but not how much infrared light the infrared light emits, and how much infrared light the camera can receive.