Blade – 第305页 – LED Lighting Blog

How to control LED brightness

There are two ways to control LED brightness. One is to change the current flowing through the LED, the general LED tube permits continuous current at 20 mA or so, in addition to a saturation of the red LED, the other LED brightness is substantially proportional to the current flowing; Another way is to use the human visual inertia with a pulse width modulation method to achieve gray scale control, that is, periodically changing a light pulse width (i.e. duty cycle), as long as the repetition cycle of light is short enough (ie, refresh frequency is high enough), human eye do not feel luminescent pixel in jitter. Since the pulse width modulation is more suitable for digital control, the microcomputer to provide the universal LED display content Today, almost all of the LED display are controlled using pulse width modulation gradation.

LED control system usually consists of the main control box, scanning panels and display and control device has three major components. Main control box from the computer’s graphics card to get a screen pixel color luminance data, and then re-allocated to several blocks scan board, each board is responsible for controlling scanning LED screen on several rows (columns), and each row (column) on the LED display and control signals are transmitted with a serial manner. There are two serial transmission of display control signals: one is the central control panel scanning gray of each pixel, the scan board from the control box for each line of pixels brightness value decomposition (i.e. pulse width modulation), Then each row of LED turn signals in pulses (lit one, does not shine as 0) by line using serial transmission to the corresponding LED on the control whether the light. The use of fewer components, but the serial transmission data volume, because in a repeating cycle of light, each pixel in the 16 gray levels requires 16 pulses, the 256 gray levels required under 256 pulses, due to device operating frequency limit, generally only the LED screen to do 16 shades of gray.
Another method is to scan the contents of a serial transfer sheet is not a switch signal for each LED but an 8-bit binary brightness value. Each LED lighting has its own pulse width modulator to control the lighting time. Thus, in a repeating cycle of light, each pixel in the 16 gray scale requires only four pulses, 256 gray scale only eight pulses, greatly reducing the serial transmission frequency.

LED lighting products development direction

Currently, LED lighting technology matures, high-power LED lighting Products effect has reached 100lm / W or more, while the last two years many of the city street lighting energy saving, indoor and commercial lighting the rapid development of the situation, have proved semiconductor lighting to replace conventional lighting gradually become possible. LED lighting as a sunrise industry gave birth to the great business opportunities, many lighting companies in order to seize the valuable opportunity to seize more market, create more efficiency, are trying to develop a variety of LED lamps to meet the needs of users, and even some of the original does not produce lighting products have also launched LED lighting, lack of professional knowledge as lighting, lighting market research is not thorough, lighting business development there is no scientific and rational planning and lack of foresight on the future development of the industry, resulting in a current semiconductor lighting Product chaos. The Guangzhou Guangya Lighting Exhibition blowout phenomenon can be fully proved that the majority of enterprise products identical, and the lack of new ideas, and the cost price of the issue has exacerbated the limited market competition. The development of industrial chaos phenomenon, a lot of my colleagues are worried.

Today’s science and technology scientific contradictions restricting the normal development of industry, business investment be profitable, customer demand-oriented dislocation, Relationship Marketing, Government Executive consciousness does not correct guidance direction of industrial development, such as the market LED bean pot lamp , a combination of multiple LED light source lamp, nowadays some LED lamps, incandescent glow from some distance some of the LED bulbs, some non-standard LED lights, tunnel lights. They failed to correctly understand the conventional way of lighting and lighting requirements are unique, just Yihuhuhuapiao, according to the conventional lighting looks like making that same look is light, light is light, energy-saving lighting is the light. Indoor lighting are really asking is: According to the environmental requirements and standards of different places illumination, no strings light, no flash quite, soft and comfortable with a certain degree of illumination, (we should be concerned of conventional lighting light source emitting principle), We are also commonly referred to as mood lighting, scene lighting, (should be upgraded to mood lighting), today as a fourth-generation light sources revolutionary semiconductor lighting products LED, lighting can not only meet these requirements but also the best choice.
LED outdoor lighting products for more demanding outdoor environment, there are many uncertainties that affect the application of lighting products, so outdoor lighting is also the most difficult lighting products. Lighting is a complex system, which is composed by a whole lot of components, electronic components for demanding work environment, must be considered when making the work environment in a variety of factors in order to ensure lighting is not affected. Meanwhile, heat the necessity of structural design, reliability of power supply, lighting wind resistance requirements, scientific and reasonable light, to have artistic designs, etc. must all possess ornamental eventually produce to meet the requirements of different lighting fixtures.

The chinese LED tunnel lights potential market

As of the end of 2009 China’s existing rail tunnel of 6876, with a total length of 3,670 kilometers, is the world’s first; Chinese total number of 1782 highway tunnel, with a total length of 704 km, is the world’s largest country road tunnel. The past two years is still an annual growth rate of about 200 km. According to “Road Tunnel Ventilation Lighting Design Specification (JTJ026.1-1999)” estimates, tunnel lights installation spacing of 1.5 m, symmetrical installation, this methodology domestic traditional tunnel lights mounted lights about 6 million, the market capacity is about 12 billion yuan. According to an annual growth of 200 kilometers in length, tunnel lights for an annual increase of about 300,000, the new LED tunnel lights potential market size of 600 million. As of the end of 2009 Shanghai, Guizhou, Shaanxi, Jiangxi, Zhejiang, Yunnan, Chongqing, Anhui, Guangdong, Fujian, more than 10 provinces and cities have begun to apply or promote LED tunnel lights.

2009 of the LED tunnel lights market is concentrated nature of the market share, the top 10 companies account for about 70% market share. Light side, imported light LED Tunnel Light accounted for 90% of the market, including CREE, Philips, Osram and Taiwan Epistar accounted for almost half of the country. Next few years, LED tunnel lamp market dominated by a few companies the situation will continue, imported light will continue to occupy a major share of the market. But with the domestic high-power LED chips gradually expand the scale, the future, this situation is expected to improve, thereby reducing production costs.
2009 domestic LED tunnel lights market overall improvement in the technology, the price gradually declined, city of ten thousand and relevant government subsidy policy under the influence of other factors, sales and sales are reaching record highs. According GLII survey data show that the market scale reached 180 million yuan, compared to 4,000 million in 2008, an increase of over 300%; domestic LED tunnel lights sales of about 80,000 units, estimated 2010 shipments will exceed 12 million units, the market size is expected to exceed 300 million yuan.

According GLII statistics, as of the end of 2009 China’s existing rail tunnel of 6876, with a total length of 3,670 kilometers, is the world’s first; Chinese total number of 1782 highway tunnel, with a total length of 704 km, is the world’s largest country road tunnel . The past two years is still an annual growth rate of about 200 km. According to “Road Tunnel Ventilation Lighting Design Specification (JTJ026.1-1999)” estimates, tunnel lights installation spacing of 1.5 m, symmetrical installation, this methodology domestic traditional tunnel lights mounted lights about 6 million, the market capacity is about 12 billion yuan. According to an annual growth of 200 kilometers in length, tunnel lights for an annual increase of about 300,000, the new LED tunnel lights potential market size of 600 million. As of the end of 2009 Shanghai, Guizhou, Shaanxi, Jiangxi, Zhejiang, Yunnan, Chongqing, Anhui, Guangdong, Fujian, more than 10 provinces and cities have begun to apply or promote LED tunnel lights.
2009 of the LED tunnel lights market is concentrated nature of the market share, the top 10 companies account for about 70% market share. Light side, imported light LED Tunnel Light accounted for 90% of the market, including CREE, Philips, Osram and Taiwan Epistar accounted for almost half of the country. Next few years, LED tunnel lamp market dominated by a few companies the situation will continue, imported light will continue to occupy a major share of the market. But with the domestic high-power LED chips gradually expand the scale, the future, this situation is expected to improve, thereby reducing production costs.
2009 domestic LED tunnel lights market overall improvement in the technology, the price gradually declined, city of ten thousand and relevant government subsidy policy under the influence of other factors, sales and sales are reaching record highs. According GLII survey data show that the market scale reached 180 million yuan, compared to 4,000 million in 2008, an increase of over 300%; domestic LED tunnel lights sales of about 80,000 units, estimated 2010 shipments will exceed 12 million units, the market size is expected to exceed 300 million yuan.

Civilian prices stimulate led color lights demand

Once the capital market coveted LED industry is tasking the bitter fruit expanding rapidly tasting the bitter fruit of a few years ago. Financial reported that in 2012 and the first quarter of this year, listed companies are caught in the embarrassment that the income is not increasing profits.

However, because of significant warming trend in demand and policy, the recent brokerage researchers once again are full of enthusiasm for the sector. “LED lighting, whether it is the time end or it is another dream ? “This is a market mutual doubts.

Civilian prices stimulate demand

According to statistics, the Institute included 25 LED key listed companies, in 2012 the total revenue is 48.409 billion yuan, an increase of 9%, the total net profit of 3.933 billion yuan, down 18%. In the first quarter, this 25 LED key listed companies total revenue of 9.888 billion yuan, an increase of 12%, the total net profit of 719 million yuan, down 3%.

However, LED industry begin to display signs of improvement. It is understood that the recent government has a clear promotion program for LED lighting. It is estimated that 2013 Guangdong led color lights installed capacity will grow by nearly 4-fold to 1.1 million, Shenzhen is planning to transform 10 times this year, that is more than 200,000. Meanwhile, Jiangxi introduction of “energy saving” second five “planning”, plans to promote LED outdoor lighting products 100,000 or more, interior lighting is 3000000; Fujian Details of promoting outdoor lighting also recently introduced.

“According to past experience, the local government of the LED lighting business generally consists of a single volume strength of listed companies taking, which also enhance the company’s profitability related.” researcher in Shanghai said. More importantly, in the eyes of the market participants, the price of led color lights products is no longer superior, but also directly stimulate demand surge. A researcher investigations showed that in June this year before Houlei Shi lighting may launch the first round of price wars, other manufacturers such as sun lighting is likely to follow. The Leading enterprises resorted to “price butcher’s knife,” the researchers expected the price of LED lighting products are declined in the second half to reach 30% -40%. This also means that the 18W LED lamp, for example (equivalent to 30W T8 energy-saving lamps), the mainstream channel retail price is expected from now 70 yuan -80 yuan / only dropped to 40-50 yuan / only, while saving 30W Brand lamp price of 20 yuan -30 yuan / only, namely LED lamp prices have entered the second half of energy-saving lamp 2 times the price range, which is the industry calls “sweet spot.” In this light price, the market clothes, replacement demand is expected to increase rapidly.

April 2013 auto LED light bulbs market competition is heating up

According to research firm DRAMeXchange (TrendForce) LED inside’s latest auto LED light bulbs retail price survey shows that in April 2013, the global LED bulbs retail prices continued to show a downward trend. Global replace 40W LED bulbs retail price showed decreased approximately 5.7%, reaching $ 16.1. Fewer new items are in each region. 60W LED bulbs replace part of April showed the global average fell 1.2 percent, to $ 23.8. Except China and Taiwan, due to higher prices of new items resulting price rise, the rest of the price remained stable downward trend.

Replace the traditional 40-watt incandescent auto LED light bulbs commodity price fell below $ 10 in China

LED insider said the global replace 40W LED bulbs retail price in April 2013 showed about 5.7 percent, reaching $ 16.1. Fewer new items are in each region. British and German regions where prices were presented in April by 5.3% and 13.2% decline in the two regions. Compared with the original commodity prices fell sharply trend, especially Osram and Samsung, two branded product prices down more distinctly. Two regions had no new items appear this month.

Japan replaces 40W of average commodity prices showed approximately 2.2% rise, the price for some of the goods back up due to the end of the promotional period, the region have no new items appear. U.S. District commodity price rose 3.7% in April. Original commodity price have little fluctuations, the region also have no new items appear. South Korea region in April prices were down slightly by 1.6%, the original commodity prices basically unchanged, due to exchange rate increases will lead to lower prices. In addition, the Chinese region of replacing 40W showed 9% decline in commodity prices, reaching $ 9.8, still currently the lowest in the region. Mainly due to some of the original start promotional merchandise, prices fell sharply. While Taiwan commodity prices in April showed 16.7% which falls sharply, the original commodity prices remained stable, mainly due to lower prices lead to new items price low.

The 2013 future predict for U.S.energy efficient lamps trends

U.S. market research firm Freedonia (Freedonia) research report predicted that by 2016 the U.S. lighting market will reach $ 25 billion. It is expected that U.S. demand for lighting will increase by 7.4% annually to reach $ 25.1 billion by 2016.

U.S. LED lighting TBT notification Convocation mainly against the United States recently released LED lamp test procedures TBT (Technical Barriers to Trade Agreement) Bulletin (G/TBT/N/USA/698 number) commenced deliberations, the test procedure provides for measuring lumen LED lights output, input power and relative spectral distribution approach. In addition, the measure also provides LED light lumen maintenance methods to predict LED lamp rated life.

These provisions are closely related with LED lighting products, while the U.S. is one of the main export markets for China’s LED lighting. In 2011 China’s exports to the U.S. amounted to hundreds of billions of LED lamps. The United States formally notified the regulations once implemented, it will make great impact for China’s energy efficient lamps.

The Commercialization of LED lighting also have a significant impact on the industry, the longer life of LED, the more energy efficient it will be, but there is only a small share of demand. Is expected to close in 2016, LED-based lighting needs will be particularly strong growth, rapid pace of technological progress. LED light source also make them more energy efficient, brighter and more affordable. In addition, lighting manufacturers are also developing a device designed for LED to optimize its performance, and to be the first-class works of art in lighting products.

Energy efficient lamps include portable and non-portable devices, as well as the separately sold parts and accessories such as aftermarket lamp ballasts, fittings, switches, etc., the demand for lighting is dominated by non-portable devices, which is accounting for nearly two third of lighting. Non-portable lighting lamps are mainly from a full range of widely used in lighting applications in buildings and vehicles. It is expected to 2016, benefiting from the rise in construction activity and put the whole vehicle demand increases, the demand for non-portable device is also expected to be increased in the after.

It expected between 2013 and 2016 the demand for non-portable lamps nearly doubled, we look at the major market segments, reducing energy consumption lighting brand will get the best growth prospects. This can be largely attributed to the 2007’s Energy Independence and Security Act of demand for energy-efficient lighting products: Limit the sale of incandescent light requirements. These regulations will strive to promote fluorescent lamps, halogen lamps, high intensity discharge lighting and energy efficient lamps needs.

Thai Government promote best led lighting fixtures

Taiwan Everlight response to the Thai government who planned to promote LED lighting lamps, so it resulted in high market demand for derivatives. It is the first time ahead of Thailand, which showcases new lighting elements and the actual lighting applications.

For Thailand, the LED light source applications and the growing market demand for lighting modules, Everlight debut “2013 LED THAILAND”, display a variety of new best led lighting components, LED digital display devices, automotive LED components and infrared LED components, providing local customers complete LED lighting solutions.

Everlight LED display digital display devices, automotive LED components and infrared components, providing local customers from a single component to the integrated modules. The complete solutions help customers to find the most suitable product. High, medium and low-power package with integrated best led lighting elements, the most important cost-effective (Lm / $) 62-217D series, in response to the client using the components so that required for different lighting products.

Everlight introduces New Medium Power LED elements 62-217D series, dimensions compact size, 5.6×3.0x0.9mm and with new tent technology, significantly enhance the cost-effective, especially for the use of the ball bulb. In addition,62-217D series has passed LM80 lighting tests.

Upon electronic motors, industrial automation appliance manufacturers demand, Everlight special exhibit the low power consumption, high brightness and excellent visual effect LED digital display devices, which is suitable for high sensitivity audio electronic products to industrial display products.

Billion light also provides a dashboard from the car, such as back-lighting, light entertainment system instructions, LCD back light and reading light tents, etc., to the outside of the vehicle, such as daytime running lights and a series of energy saving, high brightness, high efficiency, quick response and the small size of the best led lighting source , all are can not only meet the required vehicle but the reaction was fast low energy lighting conditions, but also due to DRL norms, it strengthen security on traveling.

A special attention, the European Union in 2008 announced an official announcement, on 7 February 2011 onwards require all small trucks and small buses, you must configure Car Daytime Running Light (DRL) to reduce daytime accidents.

Domestic led lighting development is as the guide of market-based channel

Mayun said in the 21st century, either e-commerce, or no business can be. Lighting industry seems to have “sniffed” this trend, nearly two years of development, they are more gather in this direction. A survey agency shows that as the largest B2C platform, Tmall Lamps category sales overall upward trend, in 2012, the annual sales is up to 600 million yuan, an increase of 200%.

China Illuminating Engineering Society General Dou Linping have an interview with Aladdin Lighting News Network reporter said, one is engaged in the lighting industry because their own electricity supplier business base is relatively low, so it shows the current growth rate higher; another one cut into the domestic led lighting product price is relatively high, so the overall lighting products sales grew rapidly.

Previously, Electricity brand director said that the current LED market is actually a small niche market, some high-intellectuals are more likely to accept LED lighting products than ordinary consumers, compared to the traditional channels, electricity shop business model eliminates the cost, and also eliminate a large number of channel cost, low terminal price, inferior race to breastfeed line channels, all facilitates are faster to open civil domestic led lighting market.

As we all know, the most intuitive difference between e-commerce sales and traditional sales channels is that one is relying on the network medium, another one is relying on offline marketing. For the lighting industry, the industry reshuffle dangerous volts is at the door. Taking LED lighting products concerned, the EMC model promotion need the enterprise funds in advance, listed companies in this “game” which will naturally become the best interests of the winner, small and micro enterprises can only take down an effort in marketing channels.

For sales of domestic led lighting products development, e-commerce becomes easier, because it requires a relatively low cost and investment, which is conducive to play the price advantage; offline marketing channel development will need to build a network of contacts, self-built channels, investment home, etc. But the benefits of offline marketing channels that once it is perfect and mature marketing channels, it will form a fixed group of consumers and distributors, in order to form relatively stable sales model.

CSA boost the development of China’s architectural led lighting business to Europe

May 17, 2013 morning, “China LED business to Europe Development Seminar” by the Ministry of Commerce Investment Promotion Bureau and the Central Association of Investment Promotion Alliance sponsored, was held at the Ministry of Commerce. Chief Representative in Europe, Zhang Kun, from Chinese Ministry of Commerce Investment Promotion Bureau, coordinator Fuqiang from Chinese Ministry of Commerce China International Investment Promotion Centre (Europe) European cooperation in the urbanization project, Wang Yinxi from China Ministry of Commerce China International Investment Promotion Centre (Europe) Trade Promotion Department, Counselor PéTER SZABó from Hungary Embassy Commercial, Deputy Secretary-General SongWeidong from China Association , Deputy Secretary-General Fu Qiang from Multinational State lighting R & D and Industry Alliance (CSA), Deputy Secretary-General Feng Yadong from CSA, director Su Chang from Hungary Eastern solar power company, general manager Lu Jiefeng from solar power company China Eastern Hungary, general manager of Eastern Hungary Ference Gallo form Green Lighting Company, CEO, Xu Fugui from Semiconductor Lighting Co., Ltd., and other representatives attended the meeting.

Hungary is located in the center of Europe, to the surrounding radiation, with a privileged policy resources and geographical environment, is the one of the most promising countries in Central Europe. Zhang Kun, Chief Representative in Europe, from Chinese Ministry of Commerce Investment Promotion Bureau, said that the Ministry of Commerce Investment Promotion Bureau has set up Hungary Trade Center in Budapest, in order to promote exchanges and cooperation between China and the EU enterprises, there are several large domestic enterprises to invest in Hungary.

Song Weidong, Deputy Secretary-General, from China Association, said at the meeting that at present China Association has worked together with the domestic multinational coalition of provincial chambers of commerce joint working group by the Working Group on the selection of quality domestic enterprises, focusing on excellent companies recommended to Hungary as well as other national march.

China as the world’s largest architectural led lighting products manufacturing exporting countries, some large-scale semiconductor lighting company has been out of the country to Europe for strategic layout. There are many domestic enterprises to expand overseas market demand. Fu Qiang said that, CSA will help the Ministry of Commerce to build high-quality platform to assist high-quality domestic enterprises to go abroad, in order to open up the European market to build a bridge.

Su Chang, Chairman of East Hugarian Solar Company is confident in further cooperation in the future. She said that Hungary solar energy company is committed to Orient “bridgehead” , and will also be fully committed to the domestic architectural led lighting enterprises to enter Hungary, laying channel into Europe. Currently, the European market for investment projects with the Ministry of Commerce has set up high-quality platform to support and actively promote the CSA, is well underway.

After the meeting, Fu Qiang gave LED bulb to Zhang Kun, PéTER SZABó and other participants, to bring a new experience semiconductor lighting lighting experience.

Surrounding areas catch up “city street lights”

This is not an era of complacency. Overhead lighting capital of China’s aura, southern town of town. In the past few decades, no industrial base in the context of creating a global profile industry. However, these glory is slowly being swallowed surrounding the rise of a powerful enemy.

Whether it can glory or continue the miracle? Perhaps, this is not who should have the final decision. Who really mastered the initiative in the market, who is the real lighting capital.

Xiaolan: LED industry build aircraft carrier

In a few days, an LED China Kyushu City, located in Zhongshan city street lights city, will usher in the grand opening. From the outset of this project will be trying to shock “China’s most” project, in a difficult stage of investment, finally it will demonstrate in front of the entire industry.

LED China Kyushu City project, a total investment of 1.3 billion yuan, it covers an area of nearly 200 acres and a building area of 40 million square meters, which is Zhongshan City, “second five” major construction projects, and also in Guangdong Province modern industry 500 strong (Zhongshan) project – an important part in Xiaolan LED industry technology service system.

The entire project from the outset positioned to take high standards: set exhibition and trade, R & D, product testing, brand incubator, industry Expo, headquarters services, tourism, commercial facilities, warehousing, logistics, personnel training ten functions in one, semiconductor lighting industry as the breakthrough point, trying to create a “national lighting industry base” and “new Light of Life.”

Such a huge scale is extremely rare to see in Zhongshan lighting industry. Even in the town’s numerous lighting current complex, compared with this, it still stretched. While in the LED carrier gradually emerging behind the Siu Lam government vowing to create economic growth by means of city street lights accelerator determination.

As the most famous professional town, Zhongshan, Xiaolan still have high visibility to outsiders. However, many people know that relying on the original underwear, locks and other industries, it has been difficult in the current rapid development of high-tech industry to continue to develop. To this end, the LED industry was to be seen the prospects.

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作者：Blade