作者：Blade

The importance of LED emergency lighting applications

Emergency lighting system is an important safety facility in the modern public buildings and industrial buildings, which is closely related with the personal/building safety. When fire or other disaster happened, the central control system will cut off power. Then emergency LED Panel Light system will come into work, playing an important role to evacuation, fire-fighting and rescue works. The continuous development of LED lighting technology and applications can change the status quo of lacking of standard general/emergency lighting products. Combined with the implementation of the national emission reduction plan, manufacturers start to develop new civil emergency semiconductor lighting products with energy-saving and environmental-friendly features. These lamps can provide sufficient luminance and lighting time for escape, rescue and rehabilitation of the power system in the event of an emergency. Engineers also developed special emergency lighting products with self-energy-generation function, portable, easy to operate, reusable, with self-protection function.

 

Emergency lighting system is an important safety facility in the modern public buildings and industrial buildings, which is closely related with the personal/building safety

 

In fires, earthquakes and other natural disasters, emergency lighting devices/equipments are necessary for escape and relief. It is estimated that, in the next three years, the total demand of semiconductor lighting products will reach up to more than 2 billion yuan. With the continuous growth of China’s economy, the social safety awareness and safety standards have been greatly improved, increasing the market demand and requirements for emergency lighting devices. These products not only need to satisfy basic requirements of emergency products, but also need to be more energy-efficient, user-friendly, reliable and durable. All this additional requirements give semiconductor lighting applications a large developing space.

 

Recently Beijing University released a new research topic: “Studies of efficient driving technology and reliable system of emergency lighting applications”. This topic intend to breakthrough key technologies in the industrialization of LED emergency lighting applications, improving the semiconductor lighting industry chain. This study will concentrate on the power supply development of LED emergency lighting applications, lamp body design, secondary optical light distribution design, overall thermal design, special driver, intelligent control system for LED emergency lighting applications. The major assessment indicators are: the luminous efficiency of LED light source should be larger than or equal to 100lm/W; thermal resistance should be less than 9 ℃ / W; the luminous efficiency of the whole lighting fixture should be larger than 80lm/W; color temperature: 3000-6000K; CRI: larger than 80; power factor: larger than 0.9; the current THD should be less than 20%; the power conversion efficiency should be larger than 80%.

Analysis of LED snow-covered landscape lighting applications

Snow-covered landscape art is a combination of snow/ice building and lighting art. Many lighting technologies were used as light sources of snow-covered landscape lighting applications, such like candlelight, incandescent lights and fluorescent lights. In spite of the increasingly mature of the sculpture and architectural art, those traditional light sources have seriously hindered the further development of snow-covered landscape lighting.

 

Snow-covered landscape art is a combination of snow/ice building and lighting art.

 

Under such circumstances, LED light source has many advantages, gradually becoming a developing trend in this field. Compared with traditional light sources, LED has many incomparable advantages: energy-saving, long service life, high reliability, environmental friendly, color changeable and dimmable. LED lighting is an emerging industry, especially in the field of snow/ice landscaping area. LED snow-covered landscape lighting applications face up great challenges. Special LED features must be fully understood by designers before creating beautiful snow-covered landscape buildings/sculptures with LED snow-covered landscape lighting applications. From the point of view of landscape designs, the projecting effect, brightness of LED lamps within ice sculptures and special presenting effects that lighting control system can realize become the most concerned issue. Designers need to take fully consideration of these issues, then take assessment to design plans through final lighting effects and model constructions.

 

LED snow-covered landscape lighting applications can be divided into two types: cast lighting mode and transparent lighting mode. Cast lighting mode can send light to the surface of buildings and sculptures, presenting the building facades and appearances mainly via surface reflection. Gradually, designers hope to create a type of ice sculptures can automatically emit light by themselves (invisible LED Street Light source), which is hardly achieved by traditional light sources. LED lighting technology provides possibility to ice building/sculpture amateurs. Designers take full use of the light emitting characteristics of LEDs, embedded them inside the ice buildings/sculptures. In this way, the optical normal axis of embedded LED light is perpendicular to the viewing direction. Thus LED lamps cannot be observed by viewers. They only can see the illuminated reflecting surface of ice sculptures. These embedded LED snow-covered landscape lighting applications have perfect presenting effects on the surface of ice bodies. Nowadays, LED lighting technology has already widely used in this area. These lamps need to have a large light radiated power. High-powered LED lighting devices will be more likely used in these snow-covered landscape lighting applications.

How to choose LED flat-panel TVs

As we all know, LED components have narrow Street Light spectrum, pure colors, thus very good and eye-catching performances in the color presenting. Even in stores (bright environment), LED flat-panel TVs still can clearly unfold details. Certainly, it has closed relations to features of LED components. It is their more advanced features that determine the high color saturation, wide color range of LED flat-panel TVs. Moreover, the new side-lighting mode LED LCD TVs can be made very thin, enabling LED LCD TVs to save more energy than ordinary LCD TVs. At present, Samsung, LG, Konka, Hisense and other manufacturers all have introduced side lighting mode LED TVs.

 

As we all know, LED components have narrow light spectrum, pure colors, thus very good and eye-catching performances in the color presenting.

 

Large-sized flat-panel TV is an inevitable developing trend. But what size is reasonable? Choosing suitable size based on the size of your individual housing space is the most reasonable way. Clearly, “the size of your individual housing space” mainly refers to the viewing distance (distance between your eyes and the TV screen).

 

LCD panel display technology can be divided into hard screen and soft screen. Soft screens mainly refers to the VA class, hard screens are also known IPS panels. IPS hard screens are more advanced in all aspects of performances: fast response, outstanding dynamic pictures, stable, wide viewing angle, better cost control. The greatest feature of IPS panels is that both of their poles are on the same surface, unlike other LCD mode electrodes, which are mounted in the upper and lower sides. Since electrodes on the same panel, regardless of the state, liquid crystal molecules are always parallel with the screen, decreasing the opening ratio and the transmittance. Therefore, IPS-based LCD TVs need more assistance of backlight, and consequently consuming more power in some extent.

 

It is one-sided to say that LCD TVs can work much longer than plasma TV sets. Certainly, LED flat-panel TVs have longer service life, due to their more sophisticated technology. Although the lifetime of liquid crystal materials can be said infinitely long, but the lifetime of liquid crystal materials are not equivalent to the whole service life of LCD TVs. Dead pixels may frequently occur because of the damage to LCD driver tubes. The marked 60,000-hour service life of LCD TVs is just the lifetime of backlight tubes. With current technology, backlight tubes cannot be replaced individually.

Technical advantages of LED backlight source

LED (Light Emitting Diode) is a type of semiconductor that can convert electrical energy to optical energy. LED technology has also been applied in LCD backlight applications. As a new generation backlight technology, LED backlight source has similar features with general LED components: low power consumption, high brightness, long service life. CCLF (cold cathode fluorescent lamp) is another commonly used LCD backlight source. Using health-harmful mercury as major material, CCLF is expected to be doomed in the future. Compared with traditional CCLF backlight, LED backlight source can save more than 40% energy, having significant advantages in this aspect. In addition, LED contains no harmful materials, zero contamination.

 

LED (Light Emitting Diode) is a type of semiconductor that can convert electrical energy to optical energy.

 

LED backlight source is composed of lattice-shaped semiconductors (each of the “grid” has one LED component). In this way, LED backlight LCD TVs can easily generate evenly distributed planar light, without any complex optical designs. Another additional benefit is that LCD can be made even thinner, and also with improved reliability and stability. CCFL belongs to tubular light source. In order to obtain evenly distributed light on the final light board, complex assisted optical components are needed. And the thickness of the screen is also difficult to control. With the increase of the panel, more light sources are needed, which makes the design and the production process even more complex.

 

LED backlight can send out evenly distributed light. In addition, they have far better performance than CCFL in the color presenting. LED Panel LCD backlight screens can easily realize NTSC 118% or gamut or even more. Due to the restriction of fluorescent materials, traditional CCFL backlight technology is relatively weak in the presenting of red color. Corresponding color filters also have dissatisfactory effects. Thus CCFL LCD TVs can only realize NTSC 65%-75% color range. Even improved CCFL LCD TVs can only obtain about NTSC 90% color range, impacting the image quality.

 

The average lifetime of LED backlight source is about 100,000 hours, even if used continuously for 10 hours every day, these light source can work for more than27 years. Thus, the light attenuation condition of LED backlight LCD TV sets is much better than that of CCFL backlight. Generally, the lifetime of CCFL backlight is about 25,000 hours. The latest top-CCFL backlight still have a lifetime time less than LED backlight – 60,000 hours. At the end of their lifecycle, the brightness of LCD will obviously reduce. Users have to replace the CCFL LCD backlight module.

Ten lead advantages of LED backlight technology

With the stimulation of LCD display market, LED backlight industry presents a boom development, making continuous progress in the display technology. After years of development, LED display industry is gradually stepped into mature stage. According to statistics from recent years, there are about 140 LED enterprises with annual production value more than 100 million yuan. From the market perspective, LED backlight technology has huge potentials. In this article, we will compare LED backlight with CCFL backlight. What specific advantages that LED backlight has?

 

With the stimulation of LCD display market, LED backlight industry presents a boom development, making continuous progress in the display technology.

 

LED backlight technology has better color gamut. Its color presenting capability is much better than that CCFL backlight source, having compensation to the LCD technology with insufficient CRI, providing better color rendition effects.

 

The general service life of LED Tube is around 100,000 hours. Even if used continuously for 10 hours a day. Theoretically, these LEDs can be used for 27 years, greatly extending the lifetime of LCD TVs. Certainly, this is just a experimental result. The practical lifetime of LED backlight LCD TVs far less than 100,000 hours.

 

Have wide brightness adjustment range. It is relatively easy for LED technology to realize power control, unlike CCFL, which has a limitation (threshold) for the minimum brightness. Thus, no matter in where, bright outdoor or all black indoor, users can easily adjust the brightness of their display devices to a comfortable level.

 

Perfect moving images. Traditional CCFL lamps have relatively low light-emitting frequency. Dynamic scenes may produce screen beatings. LED backlight technology can adjust luminous frequencies flexibly, which are much higher than CCFL and presenting motion pictures perfectly.

 

Real-time color management. Independently send out light by red, green and blue LEDs. It is easily for LED backlight LCD TV sets to control their color characteristics.

 

The backlit white balance is adjustable, without upsetting the contrast. When the video source is switched between computer and DVD, LED backlight can easily realize adjustment between 9600K and 6500K, without destroying brightness and contrast.

 

Can provide continuous plane array light four sources for large screens. LED is a kind of planar light source. LED chips with 3-5mm package are the basic light unit. Combination of these LED chips can easily form planar light sources, with even light distribution (brightness). That’s another advantage that for LED technology to be the backlight of LCD TVs. Unlike CCFL, LED backlight LCD TVs need no complex assisted optical components.

How Chinese cities choose led city night between dark and bright

Some people say, in landscape lighting design, landscape should be the first, and energy saving is the second. Because the energy lighting would not do landscape lighting. However, the landscape lighting is a very important part of in the process of urbanization, which is a direct reflection of the level of urban development. Every led city has its focus on the city’s living environment and attitude towards life. How Chinese cities choose between dark and bright, which involves the integration of social and urban night. Although we can not give up the landscape designing, so how to give up the landscape lighting to do beautiful environmental protection has become a hot topic of lighting designer. The magnificent things are less, and more basic things. What is Grand? The grand is the design which is very wonderful, very large requirements and ideas.

How Chinese cities choose led city night between dark and bright

However, what we are talking about good lighting is motionless chip. In fact, my feeling is that the entire process and quality control measure are important than chip. What is the criteria between a high-end lighting and low-grade fixtures? Lots of people say good chip or do very sophisticated. So I have proposed as our team thinking, basic things should have a little more, sometimes designer in abroad, including Europe, and Hong Kong exchanges, the biggest difference between foreign designers and domestic designers is that foreign designers on the lamps understand very thorough, very easy to talk to, but many of our designers do not understand.

When it comes to how to do lighting design? the led city is our home, the city has several types, the above house is relatively short, relatively small-scale, relatively small distance between the house, so the name of this city very petite-scale, but the feeling gives us should be more friendly and pleasant, suitable. The second is an urban form of multi-storey buildings in general, belonging to the middle-scale landscape, the nature of this scale should be regarded as a social type means that the center, and exchanges, there are certain social, so take the name of social-cities, like Beijing LED Grow Lights, Shanghai, Guangzhou, and there have a lot of ultra-high house, this house is called a particularly grand scale, the city is giving a very modern, cosmopolitan city feel, but our people do not like the scale, even though it represents the achievement of urban development.

The doomsday currently digging feet Wars, mainland LED lighting industry talent shortage

“LED industry in recent years has the rapid development and presents the potential, but previously, the professional talent accumulation in a national perspective is scare.” Xiamen LED industry experts analysis said, industry scarce talent is mostly owned by big business, the talent is certainly followed the strength of enterprises to go. Xiaojia company development needs a mature technical personnel. You can train themselves, either dig people from the outside. Many LED business owners are more willing to dig people from the outside directly, the poaching phenomenon between the LED Tunnel Light business which led to more and more serious.

The doomsday currently digging feet Wars, mainland LED lighting industry talent shortage

A Public calculated that, if an area of optoelectronics industry annual output value is over 10 billion yuan, then the corresponding demand for talent 20,000. Xiamen, for example, more than 5 billion yuan annual output value of the optoelectronics industry, you need high-end industry employing more than 10,000 people. “The reality is far less than this standard, especially the really skilled professionals is the most scarce.” Said one man in charge of a large photovoltaic enterprises in Xiamen.

Quit once pay up two percent

Recently, the Taiwan media released a statistical, Sanan Optoelectronic Taiwanese engineers and supervisors have over 100 employees, and the salary soared to more than four times. In the industry view, this precisely reflect the sets of  Xiamen LED industry favored the Taiwan technical personnel.

“Original LED center gays are basically gone, it is normal that wages rose to ten thousand yuan from 3,000 yuan.” He said. Not long ago, the National Taiwan University of National Development ” have a report that, at least 50 people flying to the development of the continent, of which 46% is attracted because of” salary “.

Senior technical personnel “the annual salary amount to millions of dollars are some, but most are Taiwan.” Xiaojia said, basically the people who come from Taiwan, the salary will be higher than in Taiwan, such as Taiwan 30,000 yuan a month, here at least 4 million, plus a year-end bonus and some reward Million Basic can be achieved. Executive search firm statistics, in the photovoltaic industry, each time, the professional managers quit the job, the average salary increase of up to 20% -50%. “

LED industry is difficult to spend the long winter

The LED insider informed, there have been four hundred million yuan LED enterprises facing funding problems. In fact, since one year time, due to the funding problems, a lot of LED small enterprises go bankrupt. They are Quietly closed their doors, and these enterprises have little effect, therefore, the media is also not to be reported, and it is difficult for the community to know. While LED business is experiencing a wave of closures.

LED industry is difficult to spend the long winter

Where is the core issue of the LED industry? “Overcapacity”. In the interview, the majority of enterprises are the case said. The LED’s huge market is potential, so it attracted many companies rushing into mass action blindly into the LED industry. The securities described in the research report. It is predicted that the “Twelfth Five-Year” period, LED industry is expected to achieve the goal of quadrupling. At the end of 2015, China’s LED lighting penetration rate is 20%, the industry is generally estimated to be more optimistic.

Herd phenomenon leads to overcapacity. Especially the global economic downturn let the domestic LED Products enterprises that mainly rely on exports to earnings get troubles. Domestic market is not yet open, but also makes the LED business a tough day. Yesterday, the reporter went through the third quarter reports. They found that the LED corporate profits decline very sharp.

Winter will continue for more than six months

“We are in the winter.” BONS Optoelectronic Technology Co., Ltd. Deputy General Manager Wang Peng think, LED industry need six months or a year to get out of the winter. To change this predicament, Peng believes that there are only two ways: First, the digestive capacity, so that let the quickly making fund and enterprises exit the industry, and the rest are the polished enterprises; Second, the entire LED industry “de-leveraging”, when the funds is no longer produce the high leverage of the LED industry, this industry can become the healthy development of enterprises.

The reporters found an interesting phenomenon, that is, the entire LED industry, including listed companies, are lack of money in the investigation of the LED business.

whether can LED push the development of commercial light into the golden years?

The LED business license has a huge market potential

Commercial shop design environment in general includes space lighting, shop windows, dressing room and display racks. According to the basic spirit of the advanced commercial light, commercial shops mostly reduce the light intensity of the environment, and then apply the accent lighting to highlight the characteristics of the product itself and beauty to avoid too much light blur the focus of the venue. Meanwhile, in order to show the texture with the characteristics of the product itself, embedded projection lamp on the expression of the ambient lighting also has a very important play. Coupled with soft but not glaring light source, the entire scene will be more depth of field and layers. Because of this particularity of commercial light shops, LED Fluorescent Tube , according to product application in commercial shops, have not been widely available, but already has its market concerned about the fire hot.

whether can LED push the development of commercial light into the golden years?

Price level papers: “two highs” PK “two lows”

2009 is the most competitive year in lighting corporate brand. According to the conditions for the development of free competition in economy environment of the market , the products are often showing the variation of the “two high”, one is general price becoming higher and higher, the second is overall quality is getting higher and higher.

At present LED is in product line “complementary” hot stages, nevertheless, the hot season in the LED industry, research and development of LED commercial light business product is in full swing in. With the upgrade of western business philosophy, mall owners has more nuanced and sophisticated needs for lighting design, and energy-saving business. In this regard, although the LED is widely used, it still need the breakthrough of price, technology and other aspects , but in all of these initial investment, LED lighting system can put it on a cost recovery project, that is energy-saving. In the cycle of its usage , it can get economic return through the energy savings .

Interior design articles: LED chip technology PK patent costs

Lighting enterprises should take full account of many factors on the design and development of products for the LED such as heat dissipation, brightness, luminance, glare, color rendering and other issues which need to solve one by one.

Human beings can not live without sunlight led

An Xiaojie lighting design has been ideal that he would like to make a project that is visible to the music, and hear the sunlight led. He even felt a good lighting results, a blind man can feel. “In fact, nature is the existence of such a situation, such as the aurora burials, we see some aurora photography, and have been able to feel that it is the kind of powerful beauty, even if I’m not blind, my eyes cast to the scene, I think that is the power of light.

Human beings can not live without sunlight led

But at the same time, when come back to reality, he also understands that, after all, it can not inseparable from the light and ​​specific building, inseparable from the light and space, inseparable from the light and the environment, can not be separated from light and life. The six-party international summit as the exchange of construction, decoration, best LED Grow Lights environment, precisely because they are inseparable. In this case, the designer needs to wonder about architecture.

An Xiaojie expressed this thought with a conclusion: When the moment go to the light source revolution, the new technology has brought a new revolution. the designer should know how to consider design of sunlight led. Any building design, today should be able to exist ten years, twenty years, fifty years. If today, there are not an understanding and an expected, then the program could quickly be eliminated. Yesterday I was still called “good” design, today are faced with the fate of the removed which have occurred.

Some people think that this demand of the arts need to be guided. An Xiaojie opposed this, he believes that the judgment and the pursuit of beauty is born. He sorted out to talk about his “pseudo-architectural history – from the” beast becomes “process, in addition to the use of fire, there is a sign that people will use the tool, and can create their own tools. They can use pottery to take out a cave as a residence, it could be human. This cave is the first generation of buildings in human history, because it uses the tools to dig.