How to choose a good LED lamp?
Release date: 2017-11-01 Source: Foreign station sharing: 
At present, the prices quoted by various merchants in the LED lighting market are far apart, and they all say how good their products are. As a layman, how do you judge whether the quality of LED lamps 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 <30% before 25,000 hours; the main factors determining the light decay are the quality of the light source and the difference in the heat dissipation structure; the high-power light source of the original foreign package, such as the CREE light source. The light decay is better than the light source of the domestic package. As a layman, the light source is generally invisible. The simple judgment method is mainly the price. The foreign original packaged light source is much higher than the domestic packaged light source; therefore, if you want to buy a better quality LED The luminaire must provide manufacturer information for the light source.
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2, light efficiency, that is, the lumens per watt, the unit LM / W, he reflects the power saving performance of the lamps, the better the power saving lamps, the higher the light efficiency. At present, the luminous efficacy of LEDs and the compact fluorescent lamps are almost the same. With the improvement of LED light efficiency, CREE may produce 186 lm/w of light source this year.
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3, the light source, is a high-power LED or straw hat lamp or piranha-type LED; LED lighting uses high-power LED as a light source, the price is higher; and straw hat or piranha type LED price is very cheap, not suitable for lighting The source of the luminaire.
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4, drive power, good drive power can guarantee the life of the overall lamp, the theoretical life of LED is 100,000 hours and the life of the general drive power is less than 100,000 hours; in order to ensure the life of the overall lamp, the drive power is also a key link; On the one hand, the LED must be driven by a constant current. If a low-cost constant voltage drive is used, the service life of the LED will be shortened. How do ordinary consumers recognize the driving power of LEDs? Look at a few parameters, light decay, lifetime, light efficiency, and warranty period. The quality of LED lamps produced by manufacturers who dare to provide long-term warranty is good. Off-the-shelf high-power DC-DC DC converter, DC booster, 36V/48V/60V electric vehicle inverter, electric vehicle intelligent DC converter.
LED lighting options:
First of all, you should be clear about your positioning. Do you need high-end or mid-range lamps ? Consider the quality of LED lamps from several aspects:
1. Chip type, the most advanced domestic use is the US CREE 3 level chip, reaching 15 yuan / W. Followed by Puri and so on, as well as Japan and South Korea. Some chips from Taiwan. Personal recommendation is Puri chip, the price is higher,
2. Light decay Light decay is closely related to the heat dissipation of the lamp and the package of the chip. The package manufacturer should also consider it.
3. Lumen value, now claimed to be able to achieve 130LM / W, personally think that indoor lighting 80-90LM is the most suitable, the technology is also the most mature
4. Color temperature and treatment of the surface of the lamp body
5. Driver This should be said to be a short board that affects the life of LED lamps. Most LED drivers can only be guaranteed for 2 years. That is to say, after 2 years, you can cause the lamp to be off because the drive is broken.
Label: How to choose a good LED fixture?
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