The pace of development of global industries in recent years has been astounding, but the lack of patents and technologies among domestic companies has not been correspondingly improved. After two years of development, the number of lighting companies in China has increased dramatically. The number of lighting companies has reached 3,000 to 4,000, and there are more than 50 well-known enterprises. LED industry bases have been built in various places, and the LED industry has a very good situation. In addition to the good application of the Beijing Olympic Games and the World Expo, the replacement of traditional LED voices is also growing.
LED Dazhao Shenwei application is very "out of color children"
As a new type of light source, LED has attracted widespread attention due to its energy saving, long life, and no pollution, and it has occupied an important position in the lighting manufacturers' hearts and lighting exhibitions. The actual application situation is also very good. There are many good application cases at the World Expo: The Expo has become a concentrated demonstration area of ​​LED technology and has created a new era of LED applications. Taking the Expo Axis as an example, the entire building has a total of more than 80,000 LEDs for centralized and unbiased control. The entire building is like a transparent giant petunia, and several hundred meters of tensioned membranes and Sunny Valley are connected into a grand dynamic wave. The light color is gradually grading on the overall level of the tension film, resulting in a beautiful and vivid artistic lighting landscape.
Not only the Expo venues, but also the street lights, buses and other supporting facilities in the Expo Park can also see the application of LED technology. A total of nearly 200 LED street lighting lamps are used in the interior garden road of the Expo Park, which not only has a good lighting effect but also is very energy-efficient. Shanghai New Energy Bus has also replaced the fluorescent lamps with LED lighting to achieve energy-saving and non-UV radiation effects.
Behind the wonderful, LED lighting has gradually highlighted a lot of problems.
(1) Heat dissipation: The poor heat resistance of LEDs is well known and will inevitably lead to problems with wick life. The design of the existing LED lamps is often difficult to meet the requirements of heat dissipation. In a field where the heat dissipation requirements are very harsh, passive cooling methods are used that are extremely poor, and most of them are air-cooled or even closed-type air-cooled.
(2) Lifetime: The life of the LED wick decreases exponentially with increasing temperature; the temperature of the electrolytic capacitor decreases by half for every ten degree increase in temperature; the MOS temperature rises, the internal resistance increases, the loss increases, and the temperature rises again (constant current Mode) and eventually burned. Of course, the domestic manufacturers did not give the lifespan of the specific LED lamps. The publicity only mentioned the LED wick's life span of 100,000 hours. However, the lifetime bottleneck of the LED is in the system driver board. The LED wick is often not damaged and the system driver has been broken.
(3) Light perception: Light perception is the visual sensation of the human eye to the LED light. Because the LED lamp as a lighting product, its visual sense is very important. One advantage of LED is pure spectrum, but this is a very serious disadvantage in the visual. In addition, there is also no advantage in terms of price and weight.
Is industry overheating a good thing or a bad thing?
The LED cake is huge and the market situation in the future is also very good. Numerous big companies have attracted participation, and even many large companies that are cross-industry have invested heavily in building their own LED industry bases. LED industry's short board can not be ignored: China currently does not have LED lighting national standards, only some local standards. China's LED lighting national standards should be formulated as an international standard model, so that China's LED lighting industry and international standards to facilitate the export of our country's products and marketing international market. At present, China's native LED lamps are obviously lacking in design and innovation design capabilities, and it is difficult to integrate with the international market trend. At present, there are more imitators and plagiarists; the luminous brightness of high-power white light, ie lumens, needs to be increased; there is a technical bottleneck in the heat dissipation of the light source itself and retardation of light failure; the physical heat dissipation technology of high-power LED light sources and high-power LED driver ICs Need to be further improved. Faced with a lot of shortcomings in the industry is rashly forward, or calm thinking, still worthy of deliberation.
The outlook is promising but the road has just begun
The outlook for the LED industry is undeniable, but overheating is not necessarily a good thing. It should maintain a relatively calm mind to look at the development of the industry. Blindly following the trend, rashly advancing is not a wise move, LED alternative to traditional lighting is also not overnight, the market economy adjustment, survival of the fittest, market education after the LED industry will be even more exciting. The LED prospects are on the horizon and the road has only just begun.
LED Dazhao Shenwei application is very "out of color children"
As a new type of light source, LED has attracted widespread attention due to its energy saving, long life, and no pollution, and it has occupied an important position in the lighting manufacturers' hearts and lighting exhibitions. The actual application situation is also very good. There are many good application cases at the World Expo: The Expo has become a concentrated demonstration area of ​​LED technology and has created a new era of LED applications. Taking the Expo Axis as an example, the entire building has a total of more than 80,000 LEDs for centralized and unbiased control. The entire building is like a transparent giant petunia, and several hundred meters of tensioned membranes and Sunny Valley are connected into a grand dynamic wave. The light color is gradually grading on the overall level of the tension film, resulting in a beautiful and vivid artistic lighting landscape.
Not only the Expo venues, but also the street lights, buses and other supporting facilities in the Expo Park can also see the application of LED technology. A total of nearly 200 LED street lighting lamps are used in the interior garden road of the Expo Park, which not only has a good lighting effect but also is very energy-efficient. Shanghai New Energy Bus has also replaced the fluorescent lamps with LED lighting to achieve energy-saving and non-UV radiation effects.
Behind the wonderful, LED lighting has gradually highlighted a lot of problems.
(1) Heat dissipation: The poor heat resistance of LEDs is well known and will inevitably lead to problems with wick life. The design of the existing LED lamps is often difficult to meet the requirements of heat dissipation. In a field where the heat dissipation requirements are very harsh, passive cooling methods are used that are extremely poor, and most of them are air-cooled or even closed-type air-cooled.
(2) Lifetime: The life of the LED wick decreases exponentially with increasing temperature; the temperature of the electrolytic capacitor decreases by half for every ten degree increase in temperature; the MOS temperature rises, the internal resistance increases, the loss increases, and the temperature rises again (constant current Mode) and eventually burned. Of course, the domestic manufacturers did not give the lifespan of the specific LED lamps. The publicity only mentioned the LED wick's life span of 100,000 hours. However, the lifetime bottleneck of the LED is in the system driver board. The LED wick is often not damaged and the system driver has been broken.
(3) Light perception: Light perception is the visual sensation of the human eye to the LED light. Because the LED lamp as a lighting product, its visual sense is very important. One advantage of LED is pure spectrum, but this is a very serious disadvantage in the visual. In addition, there is also no advantage in terms of price and weight.
Is industry overheating a good thing or a bad thing?
The LED cake is huge and the market situation in the future is also very good. Numerous big companies have attracted participation, and even many large companies that are cross-industry have invested heavily in building their own LED industry bases. LED industry's short board can not be ignored: China currently does not have LED lighting national standards, only some local standards. China's LED lighting national standards should be formulated as an international standard model, so that China's LED lighting industry and international standards to facilitate the export of our country's products and marketing international market. At present, China's native LED lamps are obviously lacking in design and innovation design capabilities, and it is difficult to integrate with the international market trend. At present, there are more imitators and plagiarists; the luminous brightness of high-power white light, ie lumens, needs to be increased; there is a technical bottleneck in the heat dissipation of the light source itself and retardation of light failure; the physical heat dissipation technology of high-power LED light sources and high-power LED driver ICs Need to be further improved. Faced with a lot of shortcomings in the industry is rashly forward, or calm thinking, still worthy of deliberation.
The outlook is promising but the road has just begun
The outlook for the LED industry is undeniable, but overheating is not necessarily a good thing. It should maintain a relatively calm mind to look at the development of the industry. Blindly following the trend, rashly advancing is not a wise move, LED alternative to traditional lighting is also not overnight, the market economy adjustment, survival of the fittest, market education after the LED industry will be even more exciting. The LED prospects are on the horizon and the road has only just begun.
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