Compared with other lamps, LED lamps have very outstanding advantages: energy saving, long life, green and environmental protection. However, the quality of LED lamps varies greatly, and ordinary people do not know how to choose? As a professional Led Street Light Factory, Xiangruilight introduces how to choose LED lamps or identify the quality of LED lamps:
First, look at the overall “power factor of the lamp”: low power factor, indicating that the driving power supply and circuit design used are not good, will greatly reduce the service life of the lamp! The power factor is low, and the life of the lamp with the best lamp beads will not be long.
Power factor level can be detected by using “power factor meter”! The power factor of general export LED lamps is required to be above 0.85. If the power factor is less than 0.5, it should be said that the unqualified product or waste product not only has a short life, but also the actual power consumption is about twice higher than the nominal, that is, 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!
Consumers who do not have a “power factor meter” to detect the power factor of LED lamps, another method is to use the “ammeter” to detect two similar products with the same nominal power, the greater the current and the greater the current harmonics, indicating the actual The greater the power consumption, the less power is saved! 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 “luminaire heat dissipation conditions-materials, structure”: LED lamp heat dissipation is also very important, lamps with the same power factor and lamp beads of the same quality, if the heat dissipation conditions are not good, the lamp beads work at high temperature, light decay will Very large, the lamp life will be reduced.
At present, the heat dissipation materials used are mainly copper, aluminum, and PC. The thermal conductivity of copper is better than that of aluminum, and the thermal conductivity of aluminum is better than that of PC. Nowadays, the heat sink material generally uses aluminum most, and the best ones are insert aluminum and car aluminum (aluminum Profiles, extruded aluminum) followed by the worst, cast aluminum, aluminum inserts have the best heat dissipation effect!
If you use air convection to dissipate heat, you must deal with the insulation of the circuit and power supply. Otherwise, the lamp works in a relatively humid environment, which is prone to short circuit and cause safety accidents!
Third, look at the “lamp bead quality”: the lamp bead quality depends on the chip quality and packaging technology.
Chip brands are divided into three camps:
The first camp is represented by European, American and Japanese manufacturers, mainly including Cree, Osram, Nichia Chemical, Toyota Synthesis, etc .;
The second camp includes manufacturers represented by the United States, South Korea, and Taiwan, mainly including Puri, Asahi, Seoul, Epistar, Thai Valley, Guangjia, New Century, etc .;
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 decay of the lamp beads. A good lamp bead is not only bright and bright, but also has little light decay.
Fourth, look at the driving power supply used by the lamp. The service life of the power supply is much shorter than that of other parts of the lamp. The service life of the power supply affects the overall life of the lamp. The theoretical life of the lamp bead is 50,000-100,000 hours. The service life is between 0.2 and 30,000 hours. 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 bead power, the higher the light effect, the higher the brightness, the same lighting brightness, the smaller the power consumption, the more energy-saving.
Six, looking at the power supply efficiency, the higher the power supply efficiency, the better, and the higher the power consumption of the power supply itself, the greater the output power.
- Is it to see whether it meets the safety standards? The safety standards for LED lamps in China have been introduced. Please choose LED lamps according to the safety standards stipulated by the state.
Eight. Is it workmanship?
A good quality LED lamp, in addition to the main aspects mentioned above, also has different technical requirements according to different use environments, such as moisture resistance, dustproof, etc.
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! It can’t be called a qualified product only by emphasizing either party! For this reason, consumers should consider the above important aspects when choosing 100w Led Flood light manufacturer to avoid economic loss!