One, look at the power factor of the overall lamp
The low power factor means that the driving power and circuit design used are not good, which will greatly reduce the service life of the lamp. With a low power factor, the lamp life will not be long even if the lamp bead is used.
The power factor level can be detected with the "power factor meter"! Generally, the power factor of export LED lamps is required to reach 0.85 or more. If the power factor is lower than 0.5, it should be said that unqualified products or junk products not only have a short lifespan, but also the actual power consumption is about twice as high as the nominal. That is to say, compared with ordinary energy-saving lamps, it does not save electricity at all! So, this is why LED lamps need to be equipped with high-quality, high-efficiency driving power!
For consumers who do not have a "power factor meter", there is another way to use an "amperometer" to detect two similar products with the same nominal power. The greater the current and the greater the current harmonics, it means that the actual power consumption is greater. The less power saving! At the same time, the current is unstable, which is detrimental to the life of the lamp beads and the life of the overall lamp!
Two, look at the heat dissipation conditions of the lamp-material
The heat dissipation of LED lamps is also very important. For lamps with the same power factor and lamp beads of the same quality, Led Ufo Lights Manufacturers reminds you that if the heat dissipation conditions are not good, the lamp beads will work under high temperature, the light decay will be great, and the lamp life will be reduced.
At present, the main heat dissipation materials used are copper, aluminum, and PC. Copper has better heat conduction than aluminum, and aluminum has better heat conduction than PC. Now the flat light radiator materials used in integrated ceilings generally use more aluminum, and the better is Insert aluminum, car aluminum (aluminum profile, extruded aluminum) is the second, the worst is cast aluminum, the effect of heat dissipation is good!
If air convection is used to dissipate heat, the insulation problems of the circuit and power supply must be handled well. Otherwise, the lamp works in a relatively humid environment, and it is prone to short circuit and cause safety accidents!
Three, look at the quality of the lamp beads
The quality of the lamp beads is determined by the chip quality and packaging technology. Chip brands are divided into three camps:
The Led Flood Light Factory represented by Europe, America, and Japan mainly includes Cree, Osram, Nichia Chemical, Toyoda Gosei, etc.;
Led Flood Light Factory represented by the United States, South Korea, and Taiwan in the second camp mainly includes Preh, Xuming, Seoul, Epistar, Taigou, Guangjia, and New Century
The third camp is Led Flood Light Factory, which is represented by China, mainly including San'an, Diyuan, Blu-ray, Silan Mingxin, Lumei, etc. The chip quality determines the brightness and light attenuation of the lamp beads. Good lamp beads not only have high luminous flux, but also low luminous decay.
Fourth, look at the driving power used by the lamps
Compared with other parts of the lamp, the service life of the power supply is much shorter. The service life of the power supply affects the overall life of the lamp. The theoretical life of the lamp bead is 50,000 to 100,000 hours, while the life of the power supply is 20,000 to 30,000 hours. The design and material selection will determine the service life of the power supply.
Five, it depends on whether the workmanship is fine
In addition to the main aspects mentioned above, a high-quality LED lamp has different technical requirements according to different use environments, such as moisture-proof, dust-proof, anti-magnetic, and anti-lightning.