The new and old industries meet, is the new way of lighting is the sudden flooding of traditional lighting? Is it still a new way of lighting to promote lighting changes and gradually become mainstream lighting? This may be a hot topic discussed by you two years ago, but today, two years later, LED efficiency can reach 131 lm / W (expected to 161 lm / W in the second half of 2010) and let everyone realize the LED driver The lighting revolution is an undeniable fact.
So how can LEDs stand out from the many light sources and lead to new changes in lighting? What is the essential advantage of LED light source?
Opportunities often coexist with risks. On June 10th, at the "6th LED Industry Theme Summit Forum" jointly hosted by Gaogong LED and Guangzhou Haizhu District Government, Tang Guoqing, general manager of CREE China Market, started from five key elements in LED driving lighting reform. Let's briefly explain the success of LED driving the lighting revolution.
Key element 1: Excellent environmental protection
Energy-saving lamps have always become one of the popular light sources with the advantages of high efficiency and low price. On March 19, 2010, the national high-efficiency lighting product promotion project was officially invited for external bidding, and the mercury content, the presence or absence of used lamp recycling equipment, and clean production were included in the bidding documents, which caused an uproar in the industry. Due to the problem of mercury pollutants, energy-saving lamps are in an embarrassing situation of “energy saving and not environmental protectionâ€. Now the country has begun to pay attention to the recycling of used lamps, which is a good start.
At the same time, we have to admit that instead of considering how to manage the environment after polluting the environment, it is better to eliminate environmental hazards at the source. As a semiconductor illumination source, LED does not contain harmful metal substances such as mercury, and there are no harmful metal substances such as mercury and lead in the process. It can be said that LED is a truly green light source and has become the primary factor driving the change of lighting.
The second key element: high luminous efficiency
In terms of light efficiency, low-efficiency incandescent lamps and halogen lamps are about 10-15 lm/W, higher compact fluorescent lamps are 60 lm/W, and HID (high-pressure gas discharge lamps) is 65- About 70 lm/W, linear fluorescent lamps (T5.T8, T12, etc.) are about 60-90 lm/W, and the growth rate is limited. LED light source is undoubtedly one of the most promising light sources, from 40 lm 5 years ago. /W up to now 208 lm / W (CREE laboratory level), let us see the unlimited potential of its light efficiency development. At present, the industry has introduced the concept of "intermediate vision". Considering the correction of the visual function, the efficiency of the LED will be higher than the test value of the current test system, and the efficiency can be higher than the high-pressure sodium lamp currently used. In addition, the bottleneck of LED efficiency in neutral white and warm white has also been broken. At present, the efficiency of warm-light LEDs that can be mass-produced has exceeded 100 lumens per watt. It is expected that the efficiency of high-power single-chip warm white LED light source in 2011 will reach 120-130. Lumen per watt has more potential than current fluorescent technology, adding more power and confidence to the success of home lighting.
The third key element: good color rendering
LED has opened up new ideas for urban beautification lighting, providing a more reliable guarantee for creating a high-quality life at a later time. Therefore, in addition to the functional role of lighting, color rendering has become more and more the focus of everyone's attention. In urban road lighting, the increase in color rendering can greatly increase its safety performance. In the case of the US city of Rhein, after replacing the LED street lights, 74% of the residents said: The LED lighting in the parking garage greatly enhanced its safety performance.
After the use of LED street lights in Guangzhou Avenue, the road brightness can reach 2 cd/m2 or more, the longitudinal uniformity is 0.7, the color rendering index is above 75, and the energy saving is over 40%. The traffic is replaced by LED street lights. Both the accident rate and the crime rate have dropped significantly.
The fourth key element: color
High color saturation is another indispensable advantage of LEDs. LEDs can be modulated into colorful and colorful images through red, green and blue tricolor chips, making them an indispensable part of beautifying cities.
Following the 2008 Beijing Olympics, everyone was amazed at the LED technology, and the 2010 World Expo has closely linked LED lighting to urban life. The Expo is inconsistent. Almost every venue uses LED technology. For example, the fountain fireworks on both sides of the Huangpu River use LED lights to show the rhythm of the city. The application of LEDs in the China Pavilion once again perfectly explains the Chinese red. The definition of "the translucent LED display of the Expo Center of 400 square meters not only saves 1/3 of the construction cost, but also switches out the three-dimensional scene of the three-dimensional and beautiful according to the progress of the program. At the same time, the green leaf paintings are unfolded, and the colorful stage makes the whole stage shine. The use of red, green and blue LEDs on the outer wall of the oil museum “Oil Cube†is more stereoscopic and richer, showing the beauty of the whole building.
Five key elements: Strong flexibility
With the people's demand for life, the requirements for lighting are getting higher and higher, lighting is not the goal that people pursue, how to increase humanized design, increase lighting comfort and organic integration of lighting and home construction. The enjoyment of the beauty of lighting has become a new hot spot for everyone. Traditional light sources are usually lighted from the outside of the building or weakly combined with the building. Due to scattering, the light will hit unnecessary places and cause the light source to be wasted. The directionality of the LED is relatively strong, and the secondary optical design can be used to drive the light to the desired place, reducing unnecessary light pollution.
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