However, what is the actual status of the domestic LED industry? Take the LED street lighting industry, most companies are losing money, and a few non-losing companies are generally supported by traditional businesses. However, in spite of the loss, these company bosses are still "painful and happy." The reason for the pain is that, despite the high-tech LED, they did not get a few decent orders. Just got a few orders, the lights are installed on the road, but due to the serious decline of their own LED lamps, the more darker the lights, the hearts of more and more afraid, I do not know one day, the light is bad to no light, How to explain to the government and the people? At present, with their company's technology, they cannot solve the problems of light failure, heat dissipation, and light distribution on LED lamps. Although these cannot be spoken by outsiders, they are still bragging about the “×× brand and illuminate the worldâ€, so the conflict is painful. Despite the pain, I think there is a huge pie that can be eaten in China with a market of several hundred million yuan. And if the packaging is good, it can also be used to collect money from a stockholder. Considering that the Chinese government has never hesitated about the future of LED lighting, it will also introduce a series of preferential policies and support measures to support the development of the LED lighting industry. At the thought of this, these entrepreneurs would be pleasing. Anyway, the Chinese government's money is good and flabby, and it is just a matter of playing a full-blooded, full-fat face, continuing to flicker, and gambling on it! This is the status quo of China's LED lighting industry - painful endurance, happy fantasy. But they did not seriously think: Where did this pain come from? How to eliminate and alleviate this pain?
There is no doubt that the Chinese government can support the demonstration of LED lighting. It can be said that the governments of all countries in the world support the most. The "Ten Thousand Cities and Ten Thousands" demonstration project has already thrown billions of yuan into it. But what is the actual effect? Many LED street lamps had to be removed due to severe light failure for several months. Although some lights are still on, they have gradually become bleak. For the sake of face, they still hold on! It is said that the street lamp of a well-known domestic enterprise has sent teams of hundreds of people to "fire" repairs throughout the country. People can not help asking: What are the reasons for all these losses? When thinking carefully, what is hateful is that China has become a testing ground for so-called advanced advanced LED lighting! Although many LED street lamp manufacturing enterprises have become victims, they are still in the dark. They even smugly declared: "We have won nearly 2000 kilometers of LED street lamp demonstration projects!" These companies have become a tool for certain foreign companies to make big profits for the Chinese government and also make taxpayers' money. Because a company advertises: “We use the LED light source of the well-known brand of the importing country x company. Its price is as high as nearly RMB 30 per watt. This way, we sell a hundred-watt LED lighting. The price of 67,000 yuan is not too high!†Our government paid 6,000 yuan per lamp. In a few years, the 2000-kilometer street lights would cost more than a billion yuan, and x foreign companies would easily take them. Going 50%. Those who have a little bit of semiconductor knowledge know that LED epitaxial wafers are extremely cheap to manufacture. If foreign advanced technologies are manufactured, they will have lower costs. Originally only 10 yuan a watt of things, how suddenly sold 30 yuan a watt? These companies also willingly advertised and advertised that they were using imported brands to help these foreign companies earn money from Chinese people! What can these companies get? It is ridiculous to say that what you get is not the other half of the renminbi. What you get is that you used foreign LED light sources to produce unqualified LED luminaire products and you can't get government projects and end up with your own brand. At this time, these foreign companies will control you? What "X-core, China sentiment" they advertised has turned out to be using their "black heart" to earn money from the Chinese people! Therefore, we have to ask ourselves: Why did you use the products of foreign famous brands, and finally this outcome? This is an important issue for our government officials, experts, and LED lighting manufacturers in particular. We can only solve this problem and really understand it. Only then can we save our LED street lighting industry so that our LED lighting manufacturers can avoid going astray. The country's new 500 billion yuan lighting industry can develop healthily.
Here, we can not help asking, where is the key to the problem? We may as well ask: Which countries have the best LED? Everyone may invariably think of the United States, Japan, Germany, South Korea, etc. Let us think about it. Since these advanced capitalist countries have such a good technology, why do they not spend billions or billions of yuan to implement LED demonstration projects in the "ten cities and ten thousand?" But why did you sell it to Chinese people as a demonstration project? This is where the problem lies. Because they know: Demonstration is trial, it is to pay the price of risk. Isn't the Chinese very clever? Learn about the world's advanced technologies. This can be due to the fact that the Chinese have tasted bitter fruit in LED lighting. Foreigners not only sold us LED high-tech products, but also sold us an encapsulated LED light source model to guide our Chinese companies to manufacture lighting fixtures according to this packaged LED light source model. As mentioned earlier, the LED lamps that use the LED light source mode of thinking of foreigners can be thought of as endings. Foreigners think about it: Anyway, what the Chinese government has now is money, and it doesn't matter if it costs money. Is it not reluctant to spend money on research and development? Then you can use your money to buy lessons! When the Chinese finally came to understand it, a lot of foreign exchange was already earned by foreigners. And our government officials and some experts and scholars, and even more entrepreneurs, are still claiming that our LED lamps are imported light sources! It can be said that the entire industry has been fooled by foreigners! Because foreigners initially sold to the Chinese a packaged LED light source, the industry as a whole would have to detour. Because no matter what your production plant, no matter how high your technology, as long as you use this LED light source as a lamp, you must design LED lamps based on the characteristics of this light source. As a result, LED lighting fixtures with dozens or even hundreds of LED light sources of the same structure were born in China. The structure of these lamps is basically the same, that is, the LED light source is encapsulated by a LED crystal on a heat sink, and the light emitting surface is encapsulated by a resin lens to protect and make a good light emitting angle. Dozens or hundreds of such light sources are mounted on a printed circuit aluminum substrate. On the other hand, the aluminum substrate is again mounted on an integrated heat sink housing. In order to make light distribution, a lens made of PC or PMMA material is added to the LED light source, commonly known as "peanut lens." Then in order to waterproof and dustproof, you must add a glass lampshade to seal. Alternatively, instead of using the “peanut lens†to distribute light, a coated reflector is used to create a LED light source cavity on the cover for reflection light distribution. Then install the driver, after the power is turned on, the LED lights up, and everyone is happy. "High-tech" LED lamps have been successfully developed! However, after the lights were lighted for a while, problems were discovered. The internal junction temperature is too high, the light fades too much, and the light fades by tens of percent in less than a few months. As a result, various manufacturers are racking their brains and trying every means to find ways to reduce the thermal resistance between the LED light source and the LED heat sink, the printed aluminum substrate, and the heat sink. As a result, there is no other way but to fill it with a low thermal resistance thermal paste. However, where is the thermal resistance of low thermal resistance? Only foreigners have. Therefore, all manufacturers will buy at any price, even if it is a high price of tens of yuan per gram, we must also buy it! Unexpectedly, this was once again earned by foreigners! After spending money, although the thermal resistance of the lamps has been reduced, the light failure is still serious! At this time, the foreigners said that the material of the PC and PMMA materials used by your Chinese people to make lenses is too bad, and it is prone to ageing and decline, and it only uses foreign materials. As a result, many manufacturers have imported large quantities of foreign PC and PMMA materials, thinking that this will reduce light decay. As everyone knows, whether imported plastic or imported PC material, can not fundamentally solve the problem of LED cooling and light failure, but by foreigners flickered money. So far, it can be said that Chinese companies use this pattern of light sources designed by foreigners as LED luminaires, and no one really solves the problem of heat dissipation and light failure of high-power LED luminaires. This is the current sadness of China's LED lighting industry.
Why did you get into this circle? A senior scientist of NASA said that the current LED light source packaging mode is the packaging mode of LEDs used to indicate and display the light. Even if the W-level packaging mode is only an improvement, it does not meet 100 The low thermal resistance and high light output and low light attenuation requirements of the tile power light source lighting package mode are required! It is no wonder that most LED lighting fixtures made by most Chinese companies are unable to break through the heat-dissipation and light failure problems. Because the light source mode used in this lighting fixture is used for display and indicator mode! It's ridiculous to think about it! So many smart Chinese people have been fooled for many years! However, how many Chinese LED lighting companies can wake up so far? Even some of the few experts still shouted at unrealistic prices: LED lamps made with discrete light sources are the most dispersed and the best heat dissipation structure. Think about it! These experts and professors are the elites of the nation. They should have been at the forefront of science and technology, but they have also been fooled by foreigners. They do not think about and study the practical LED lighting technology with Chinese characteristics, but they help foreigners flicker their own Chinese people! Of course, this is only a minority, and there is nothing to worry about! It is an academic debate! Let them fight for it. Fortunately, the development of LED lighting industry today, many of our government officials, experts, professors, researchers have found this problem, and in some areas to stop the LED light source mode used for instruction and display Demonstration Project. Started thinking of the real lighting industry product development direction and mode: LED lighting is not wrong, LED development prospects are not wrong, the wrong is wrong in the product structure model. Because the structure pattern of the light source product of the foreign light source mode causes the LED lamp to dissipate heat, the light efficiency does not come and the light decline is serious. In fact, the correct method is not difficult: it is to change the current LED light source package mode and lamp structure mode. Adopt the structural pattern of low heat resistance and low light decay LED light source and LED lamp that our own innovation was invented, has its own intellectual property, and meets the needs of high-power lighting.
Fortunately, an LED light source and lighting model product that can truly meet lighting requirements has emerged in the Chinese market, and companies have their own intellectual property rights. Some good company's R&D team continuously collaborated with experts and professors from the Institute of Electric Light Sources of Fudan University in Shanghai and the Institute of Optoelectronics at Zhejiang University to develop low thermal resistance integrated high power LED light source modules, integrated light distribution modules, rare earth heat dissipation and heat sink modules. And power drive control module. They excluded quick success, impetuous interference, and devoted themselves to research and hard work. They solved a series of difficult problems, and realized real high-power lighting LED lamps through the optimization and combination of various modules. At present, the company represented by this company adopts a 10-100w integrated LED light source module made of domestic LED epitaxial wafers. The light source luminous efficiency has exceeded 120lm/w, and 120W LED lamps produced with this light source have been supervised by the national electric light source. The testing center (Shanghai) has detected that the total lighting efficiency has reached 90.9lm/w, and its high luminous flux integrated high-power monolithic LED lamp technology is at the leading position in the world. Its LED junction temperature (ambient temperature 25°C) has been tested to 50°C. The company’s demonstration lamps installed in Suzhou Industrial Park have not been tested for light failure after six months of monitoring. The LED lamps installed in Kunshan light up for 24 hours and have been continuously running for more than 25,000 hours, and their measured luminous decay is less than 10%. The company has obtained such good test and inspection data for its products. The raw materials used are silica gel and gold wires used for protection. The other materials are LED epitaxial wafers, solid-state heat transfer liquid metals, phosphors, ceramic package substrates, and rare earths. Aluminum alloy heat-dissipation materials, glass materials for light distribution lenses, etc., all use domestically-produced materials and materials developed by the company's own intellectual property.
I believe that the LED lighting industry, after painstaking thinking, everyone will surely wake up and reach a consensus: only adhere to the road of independent innovation, increase the development of LED from the epitaxial wafer to the LED light source package structure and LED lamp structure research and development, from the basic raw materials Research has started to increase investment, immersed in innovation, and it is now possible to embark on the embarrassing situation that everyone is suffering. At present, the entire lighting efficiency of high-pressure sodium lamps is in the range of 60-70 lm/w. To make LED lamps save energy by more than 60% than that of sodium lamps, the overall lighting efficiency of LED lamps must be greater than 100 lm/w, so as to save more than 60% energy. Only in this way can we achieve the goal of energy saving and emission reduction and low carbon economy in China! If some companies still take the 60-70lm/w light efficiency and LED lighting fixtures to replace the existing 60lm/w high-pressure sodium lamp, and scream what energy-saving 60-80%, this is self-deception. Such a company cannot save China's LED lighting industry. If you really let such a company go to "lead the Chinese LED lighting industry," think about, China's LED lighting industry will run to where it "leader"? Can only run darker. Therefore, only through independent innovation, abandon the wrong LED lighting product design and structural model, and innovate LED products with high efficiency and high quality that truly meet the LED characteristics and meet the needs of lighting in order to save the Chinese LED lighting industry!
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