Compared with other lamps, LED lamps have outstanding advantages: energy saving, long life and environmental protection. However, the quality of LED lamps varies greatly, and consumers do not know how to choose? In view of the vicious competition in the current market price of flat panel lamps, the listing of a large number of unqualified products (professed by professionals (inferior goods, bad goods, rotten goods) has violated the real value of LED energy saving, long life, environmental protection, etc. The application of LED technology to the field of integrated ceilings 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 luminaire": low power factor, indicating the use of the drive power, circuit design is not good, will greatly reduce the life of the luminaire, low power factor, the use of good lamp beads will not last long .
The power factor is high and low, and it can be detected with the “power factor meterâ€! Generally, the power factor requirement for export LED lamps is above 0.85. The power factor is lower than 0.5. It should be said that the unqualified product or the garbage product is not only short-lived, but also the actual power consumption is about twice as high as the nominal value. That is to say, compared with the ordinary energy-saving lamp, it does not save electricity at all! Therefore, this is why LED lamps need to be equipped with high-quality, high-efficiency drive power!
There is also a way for consumers without "power factor meter" to use "current meter" to detect two similar products with the same nominal power. The larger the current and the larger the current harmonics, the larger the actual power consumption. The less power saving! At the same time, the current is unstable, which is detrimental to the life of the lamp bead and the life of the overall lamp!
Second, look at "lighting conditions of lamps - materials, structure": LED lighting is also very important, the same power factor lamps and the same quality of the lamp beads, if the heat dissipation conditions are not good, the lamp beads work at high temperatures, light decay will Large, the life of the lamp will be reduced.
At present, the heat dissipating materials used mainly include copper, aluminum and PC. The thermal conductivity of copper is better than that of aluminum. The thermal conductivity of aluminum is better than that of PC. Now the flat panel radiators used in integrated ceilings are generally made of aluminum, and the best is inserted. Aluminum, aluminum (aluminum, extruded aluminum) followed by the worst, cast aluminum, insert aluminum heat dissipation is the best!
If the air convection method is used to dissipate heat, it is necessary to deal with the insulation problem of the circuit and the power supply. Otherwise, the luminaire works in a relatively humid environment, and it is prone to short circuit and cause a safety accident!
Third, look at the "light quality": the quality of the lamp is determined by the chip quality and packaging technology.
The chip brand is divided into three camps:
The first camp is represented by Europe, America and Japan, including Cree, Osram, Nichia, Toyota Synthetic, etc.
The second camp is represented by the United States, South Korea, and Taiwan, including Puri, Xuming, Seoul, Jingyuan, Taigu, Guangjia, and the New Century.
The third camp is represented by domestic manufacturers, mainly Sanan, Diyuan, Blu-ray, Silan Mingxin, Lumei and so on. The quality of the chip determines the brightness and light decay of the lamp. A good lamp bead is not only bright but also light.
Fourth, look at the driving power used by the luminaire. The service life of the power supply is much shorter than that of other parts of the luminaire. The life of the power supply affects the overall life of the luminaire. The theoretical life of the lamp bead is 50,000-100,000 hours. The life span is 0.2-3 million hours, and the design and material selection of the power supply will determine the service life of the power supply.
Fifth, look at the light effect: the same lamp power, the higher the light efficiency, the higher the brightness, the same lighting brightness, the smaller the power consumption, the more energy saving.
Sixth, look at the power efficiency, the higher the power efficiency, the higher, the higher the power consumption of the power supply itself, the greater the output power.
Seven, is it to see if it meets safety standards? China's LED lighting safety standards have been introduced, please select LED lamps according to the national safety standards.
Eight, is it to see if the work is fine?
A good quality LED lamp, in addition to the above-mentioned several main aspects, also has different technical requirements according to different use environments, such as moisture, dust, anti-magnetic, anti-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 one side, can not be called a qualified product!
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