LED fluorescent tubes are still at a high price, but due to their energy saving, environmental protection and long life, they are widely used in parking lots and commercial lighting. According to statistics, the LED fluorescent tube market in 2011 reached 6 billion yuan. With the continuous decline in the price of LED fluorescent tubes and the continuous improvement of technology, LED fluorescent tubes are increasingly used in various application fields. It is expected that the scale of China's LED fluorescent tube market will increase by more than 60% in 2012.
LED fluorescent tube development process
Domestic LED fluorescent tubes started later than the international market, but the development speed is much higher than other similar economies. In 2005, China's LED fluorescent tube enterprises began mass production. However, due to technical limitations such as LED light source, heat-dissipating casing and driving power supply, LED fluorescent tubes generally have defects such as low luminous efficiency, short life, high maintenance rate and high safety hazards. With the improvement and improvement of LED packaging device technology, housing heat dissipation, heat conduction board, driving power supply and other technologies, China's LED fluorescent tube is not only improved in light efficiency, life extension, maintenance rate is reduced, and its cost price continues to decline. LED fluorescent tube Entering the civilian market will be earlier than expected.
The development process of LED fluorescent tubes in China is different according to different LED light sources, different heat sink materials or designs, and different power supply methods. According to different LED light sources, the development process of China's LED fluorescent tubes is roughly three types: LAMP series, SMD series and COB package series; according to the heat dissipation shell material or design shape, the development process is plastic type, semi-plastic semi-aluminum tube type. There are three types of all-aluminum type; the order of development process is built-in and external depending on the way the power is placed; the order of development process is T8, T10, T5 according to the structure model. The following mainly introduces the development process of LED fluorescent tubes in China according to the use of different light sources.
Note: The main selection of light source is F5 straw hat, 3528, 5050, 3020, 3014, 5630, 2835, COB package for statistics, while 3535, 5730, 2020, F5 helmet, F5 flat head and other light sources are rarely used, not in the statistical range.
There are many choices of light sources, each with different proportions.
According to the data surveyed in the first half of 2012, the light sources used in the development of LED fluorescent tubes in China today are F5 straw hats, 3528, 5050, 3020, 3014, 5630, 5730, 2020, F5 helmets, F5 flat heads, 2835, 3030, 3535. , 2016, COB package and other series, LED fluorescent tube development period different choice of the main light source is different.
Description:
Other medium and high power: mainly refers to series 2835, 3030, 3535, 5050, 5730, 2020.
Since 2005, the light source used in China's LED fluorescent tubes has changed significantly. This is mainly related to the improvement of the overall technology of the LED industry and the market demand for LED fluorescent tubes. Among them:
After 2008, the proportion of LED fluorescent tubes using F5 straw hats as the light source was rapidly reduced and replaced by other light sources. As of the end of June 2012, the market share of LED fluorescent tubes for F5 straw hat series light source has been less than 0.5. %, only a few companies still maintain a certain amount of production, mainly because their early customers still rely on such products.
In the second half of 2009, 3020 and 3014 gradually occupied the 3528 and 5050 parts of the market as LED fluorescent tube light sources. In the same year, the power of 5630 was applied to LED fluorescent tubes in a small number of enterprises, while the 5050 series light source used in LED fluorescent tubes began to decline;
After the second half of 2011, the proportion of LED fluorescent tubes with medium and high power represented by 2835, 3030, 3535, COB packaging and other series as the light source increased rapidly. At present, the light source used in China's LED fluorescent tubes still has LAMP in-line series, SMD patch series and COB package series, but the proportions vary with time.
3528, 3020, 3014 total accounted for more than 50%
Statistics show that the proportion of LED fluorescent tubes in each light source in the first half of 2012 is significantly different from that in the same period in 2011. The SMD series will still be the focus of LED fluorescent tube market demand.
In the first half of 2012, the proportion of various types of light source products used in China's LED fluorescent tubes was more obvious. Among them, the number of LED fluorescent tubes in the LAMP series accounted for less than 0.5%, and the total number of LED fluorescent tubes in the 3528, 3020 and 3014 series of light sources accounted for a large proportion. More than 60%, and the 2835, 3030, 3535, COB package and other series represented by the series of high-power LED light bulbs accounted for the largest increase in the number of all, the overall proportion reached 16%.
LED fluorescent tube has a significant change in the proportion of its light source
The main reasons for the significant change in the proportion of LED fluorescent tubes in various light source series are:
The elimination of the LAMP series is mainly related to the fact that there is a difference in heat dissipation, a small illumination angle, and a high light decay. Due to the small pin diameter of the LAMP series and the majority of the iron material, the overall heat dissipation of the light source product is poor. The LED fluorescent tube is lit for a long time, and the internal LAMP series light source is not timely, which seriously affects the life and light decay of the LED fluorescent tube. Before 2009, the light source used in LED fluorescent tubes was mainly based on the LAMP series. However, in the subsequent use, the LAMP series light source was exposed to the problem that the LED fluorescent tube was not in a timely manner and the light decay was high, and the SMD series replaced the LAMP. The series has become the best choice for customers with LED fluorescent tube light source. However, due to the strong sealability and resistance to drop of the LAMP series of light sources, the LAMP series of light sources are still dominant in some specific applications, which will last for some time.
The main reasons for the 3528, 3020, and 3014 series are over 50%. The main reasons are: a. 3528, 3020, 3014 series products have a single structure, good heat dissipation, small size, no spot in the LED fluorescent tube, and low cost. B.5050, 5630 particle size is large, the use of LED fluorescent tube in the larger spacing, the resulting spots are too obvious, more suitable for some advertising series of LED fluorescent tubes, light bars, etc., not the best choice for LED fluorescent tube light source.
The medium and high power represented by series of 2835, 3030, 3535, COB packaging has become a fast way for enterprises to reduce costs. As the price of LED fluorescent tubes continues to decline, the gross profit margin of LED fluorescent tube manufacturers has been greatly reduced. In 2010, the average gross profit margin of LED fluorescent tubes reached more than 48%, but by the first half of 2012 this figure had dropped to 26% or even lower. Therefore, many companies are currently seeking to reduce the cost of LED fluorescent tubes indirectly. 2835, COB package series products have gradually become one of the main light sources of LED fluorescent tubes. 2835 series is 0.2W series products, so the number of LED fluorescent tubes used under the same power will be reduced by more than half, and the cost of LED fluorescent tubes is reduced more obviously; while the COB package becomes LED fluorescent tubes due to high overall luminous efficiency, good spot and low cost. Another option for light sources, and the COB package family will be one of the main sources of LED lighting applications in the future.
The future of LED fluorescent light source in the high-power series
The LAMP series of light sources can not be completely replaced. It is directly related to the SMD series products in terms of waterproof and moisture-proof measures. With the silicone glue package used by SMD, its waterproof and moisture-proof has been greatly improved, but to achieve the LAMP series. Waterproof and moisture-proof will take some time, and the LAMP series will eventually be completely replaced. At present, LED fluorescent tubes will develop toward high luminous efficiency, low price, high quality and high reliability. Statistics show that COB packaging series can achieve high luminous efficiency and low cost, so it will be packaged in 2835, 3030, 3535 and COB in the next few years. The number of medium and high power series LED fluorescent tubes represented by the series is rapidly increasing. In the future, China's LED fluorescent tubes will form an LED fluorescent tube market with medium and high power series LED fluorescent tubes and 3528, 3020, 3014 and other series of light sources.
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