How to buy led lights?

LED lights are currently widely used in home life lighting, but people are not very clear about the choice of LED lights from the technical level. The following LED lamp manufacturers Huapu will tell you how to buy LEDs from several technical aspects. Lighting.

1. LEDs with different illumination angles have different illumination angles. Special lighting angle, the price is higher. Such as the full diffusing angle, the price is higher.

2. The key to different quality of life is life, and life is determined by light decay. Low light decay, long life, long life and high price.

3. The illuminator of the wafer LED is a wafer, and the price of the wafer varies greatly. The chips in Japan and the United States are more expensive, and the prices of wafers in Taiwan and China are generally lower than those in Japan and the United States ( CREE ).

4. Wafer Size The size of the wafer is indicated by the side length. The quality of the large wafer LED is better than that of the small wafer. The price is proportional to the size of the wafer.

5, LED brightness (MCD) is different, the price is different. LEDs for LED luminaires shall comply with the laser class I standard.

6, anti-static ability, anti-static ability of the LED, long life, and therefore high prices. LEDs with an antistatic greater than 700V are usually used for LEDs.

7, the same wavelength of the LED, the color is the same, if the required color is consistent, the price is high. It is difficult for manufacturers without LED spectrophotometers to produce pure color products.

8. Leakage current LED is a unidirectional conductive illuminator. If there is reverse current, it is called leakage, and LED with large leakage current has short life and low price.

9, colloidal ordinary LED colloid is generally epoxy resin, LED with anti-ultraviolet and fire retardant is more expensive, high-quality outdoor LED lighting should be resistant to UV and fire. Each product will have different designs. Different designs are suitable for different purposes. The reliability design of LED lighting includes: electromechanical safety, health and safety, gas safety, fire safety, environmental safety, safe use time and other factors. . From the perspective of electrical safety, it should comply with relevant international and national standards. Since LED is a new product, China's national standard lags behind, but the country provides product qualification testing. LED lighting with international safety certification (such as CE, UL, etc.) and national product quality certificate is expensive, because these products are reliable in safety design. Consumers are paying attention to the authenticity of the certificate. There are not many manufacturers with international safety certification and national product certification.

From the aspect of health, the price of products designed with non-toxic materials is high, especially for indoor LED lighting. Don't use cheap LED lighting with odor. At present, only a few LED lamp manufacturers use non-toxic materials to produce. The method can be directly used with the nose, and the odorous product is much lower than the odorless price. Toxins like lead, mercury, and cadmium require professional analysis. From the perspective of applicable environmental safety, there is a reliable dust-proof and moisture-proof design, and the price of LED products with fireproofing, ultraviolet protection and low-temperature cracking is high.

Another indicator for LED purchase:

one. Look at the product

Look at the product's process, (1) from the finish of the product parts can be seen the level of the mold, so indirectly see the quality. (2) see if the solder joints have the same size, whether there is a sharp point, etc., to see whether it is hand soldering or Reflow soldering, wave soldering, SMD placement machines, PCB tinning machines, etc. These devices cost hundreds of thousands to millions. If LED lamps made with these devices are used, the quality reliability and the products used for hand soldering are very different. Different. (3) See if there are flaws and defects

two. Look at the parameters

The main parameters of LED lamps, especially high-power LED lamp beads, are luminous efficiency and color rendering index. The current indicator of luminous efficiency is 80-100LM/W, which must be greater than 80 LM/W, but this indicator is in the growth period until next year. It will reach 100-120LM/W. The color rendering index can reach 0.8, and this indicator does not need to pursue more than 0.85, unless you are engaged in painting and other work that requires high color.

three. See if there is glare

If there is glare, it will have a potential adverse effect on the children in the home. Simply speaking, it is the same brightness, and the larger the light-emitting area, the better.

four. Look at the look and function

Look at whether the appearance is your favorite, whether it is artistic, whether there is intelligent control, whether there are special functions that you need, such as voice control functions.

Fives. Look at the place of origin

The largest clusters of China's LED industry are the Pearl River Delta region and the Weinan region. These two regions have many excellent LED companies, and their products are exported to foreign countries. Their quality and technology are mature. The reliable quality enterprises in the Pearl River Delta region are mainly concentrated in Shenzhen and Dongguan, while Zhongshan Zhongshan is China's lighting production center. There are a large number of LED workshops converted from lighting workshops. The technical funds and equipment are lacking, often low. The method of price dumping is profitable, and the method of increasing the current to reduce the cost is used for sales. The life of the product is very short, and it is often sold on Taobao.

six. Look at the business

If you can visit the factory production line, of course, the best, but the regular LED lamp manufacturers will not let the general public to visit the factory production line, because the electronics factory has high requirements for dust and anti-static, so it can be registered from the enterprise, with or without certification, Whether there are websites, Baidu Google rankings, media reports, user feedback and other aspects to judge.

Seven. Watch after sale

After-sales service is very important, because LED lights can be used for many years, the price is not cheap, to choose well-known enterprises, because well-known companies tend to pay attention to reputation, it is not so easy to be famous, anonymous enterprises can re-sell after the goods are registered The new company, or simply closed down. The easiest way to be a well-known company is to go to Baidu.

Eight. Comprehensive consideration of the above indicators and prices

Don't just consider one of the indicators, but consider it comprehensively. In addition, products with significantly lower prices should be especially careful. Chengdu people often say that they pay a penny. The experience of thousands of years tells us that it is not necessary to be too expensive. Well, too cheap is often a trap.