[China Aluminum Network] Compared with other lamps, LED lamps have outstanding advantages: energy saving, long life, and environmental protection. However, the quality of LED lamps varies greatly. Consumers do not know how to choose? In view of the current vicious competition in the market for flat panel lamp prices, the listing of a large number of substandard products (professionals (bad, bad, bad), has violated the real value of LED energy saving, long life, environmental protection, etc. The significance of applying LED technology to the integrated ceiling area has seriously affected the healthy development of integrated ceiling LED panel lights.How to distinguish the advantages and disadvantages of LED lamps should start from the following aspects:
First, look at the overall "power factor of the lamp": low power factor, indicating that the use of the drive power supply, circuit design is not good, will greatly reduce the lamp life, low power factor, the use of a good lamp lamp life will not be long .
The power factor can be detected with the "Power Factor Meter"! General export LED lamp power factor requirements to reach 0.85 or more. Power factor is lower than 0.5, it should be said that unqualified products or garbage products, not only short life, and the actual power consumption is about twice higher than the nominal, that is, compared with ordinary energy-saving lamps, simply do not save power! So, this is why LED lamps need to be equipped with high-quality, high-efficiency drive power!
There is no "power factor meter" consumers, there is a way to use the "current meter" to detect two similar products of the same nominal power, the greater the current and current harmonics, indicating that the actual power consumption is large, also The less power! At the same time, the current is unstable, which is unfavorable to the life of the lamp and the life of the whole lamp!
Second, look at the "heating conditions of lamps - materials, structures": LED lamp heat dissipation is also very important, the same power factor lamps and the same quality of the lamp beads, if the cooling conditions are not good, the lamp beads work at high temperatures, light decline will Large, lamp life will be reduced.
At present, the heat-dissipating materials used mainly include copper, aluminum, and PC. The heat conductivity of copper is better than that of aluminum. The thermal conductivity of aluminum is better than that of PC. Nowadays, the aluminum plated heat sink materials used in the integrated ceiling are generally made of aluminum. Insert aluminum, car aluminum (aluminum extrusion, extrusion aluminum) followed, the poor is cast aluminum, insert aluminum cooling effect is better!
If you use air convection to dissipate heat, be sure to handle the circuit and power supply insulation issues. Otherwise, the lamp works in a relatively humid environment, and it is prone to circuit short-circuit, resulting in a safety accident!
Third, look at the "lamp beads quality": lamp beads quality is determined by the chip quality and packaging technology.
The chip brand is divided into three major camps:
Relying on the former camp, the European, American, and Japanese companies are represented, including Cree, OSRAM, Nichia Chemical, Toyota Synthetic, etc.;
The second camp is represented by the United States, South Korea, and Taiwan, and mainly includes Puri, Xuming, Seoul, Jingyuan, Taigu, Guangjia, and New Century;
The third camp is represented by domestic manufacturers, mainly Sanan, Diyuan, Blu-ray, Shilan Mingxin, Lumei, etc. The quality of the chip determines the brightness and light decay of the lamp beads. The good lamp beads are not only bright and bright, but also have a low light decay.
Fourth, look at the use of driving power lamps, power supply life compared to other parts of the lamp, the life expectancy is much shorter, the life of the power supply affects the overall life of the lamp, lamp beads theoretical life of 5-10 million hours, and the power supply The service life is 0.2-30 thousand hours. The design and material selection of the power supply will determine the service life of the power supply.
Fifth, see the light effect: the same lamp power, the higher the luminous efficiency, the higher the brightness, the same brightness, the smaller the power consumption, the more energy-efficient.
Six, look at the power efficiency, the higher the power efficiency as possible, the higher, indicating that the power consumption of the power itself is smaller, the greater the power output.
Seven, is it to see if it meets the safety standards? China's LED lighting safety standards have been introduced, please select LED lamps according to national safety standards.
Eighth, it is to see if the work is fine?
A good quality LED lamp, in addition to the above mentioned several major aspects, but also according to different use of the environment, there are different technical requirements, such as moisture, dust, magnetic, lightning and so on.
In short, a good quality LED lamp is a perfect combination of high-quality drive power, good heat dissipation conditions, high-quality (chip) lamp beads, and safety standards. Only emphasize any party, can not be called a qualified product!
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