At present, the prices quoted by various merchants in the LED lighting market are very different, and they all say how good their products are. As a layman, how to judge whether the quality of LED lighting is up to standard?
The quality of LED lamps mainly depends on several parameters:
1. Light decay, better LED lamps have a light decay of less than 30% before 25,000 hours; the main factors that determine light decay are the quality of the light source and the difference in heat dissipation structure; high-power light sources packaged by foreign manufacturers, such as CREE light sources The light decay is better than that of the domestic packaged light source. As a layman, the light source is generally invisible. The simple way to judge is mainly the price. The price of the light source packaged by the original foreign factory is much higher than that of the domestic packaged light source. Therefore, if you want to buy better quality LEDs Luminaires must provide manufacturer information for the light source.
2. Light efficiency, that is, the number of lumens per watt, in LM/W, which reflects the power-saving performance of lamps. The better the power-saving lamps, the higher the light efficiency. At present, the luminous efficiency of LEDs is almost the same as that of compact fluorescent lamps. With the improvement of LED luminous efficiency,
3. The light source is high-power LED or straw hat lamp or piranha-type LED; LED lighting uses high-power LED as the light source, and the price is high; while straw hat lamp or piranha-type LED is very cheap, not suitable for lighting. light source for class luminaires.
4. Driving power supply, a good driving power supply can ensure the life of the whole lamp, the theoretical life of LED is 100,000 hours and the life of general driving power is less than 100,000 hours; in order to ensure the life of the whole lamp, the driving power is also a key link; in addition On the one hand, the LED must be driven by constant current. If a low-cost constant voltage drive is used, the service life of the LED will be shortened. As an ordinary consumer, how to identify the quality of LED driving power? Look at several parameters, light decay, service life, light efficiency, and warranty period.
First of all, you should clarify your positioning, whether you need or mid-range lamps. Consider the quality of LED lamps from several aspects:
1. The chip type, the most used domestically is the CREE 3 chip of the United States, reaching 15 yuan/W. Followed by Purui, etc., as well as Japan, South Korea. Some chips from Taiwan. Personal recommendation is Purui chip, the price is higher,
2. Light decay Light decay is closely related to the heat dissipation of lamps and chip packaging, and packaging manufacturers should also consider it
3. The lumen value is now claimed to be able to achieve 130LM/W. I personally think that 80-90LM is the most suitable for indoor lamps, and the technology is also the most mature.
4. Color temperature and treatment of lamp body surface
