作者：Blade

How to choose LED controllers?

LED controllers control every switch in LED control circuits via chip processing. With the continuous growing of LED light sources, more and more clients and end users required to use controllers. However, unlike LED lighting fixtures, LED controllers have developed only for a few years, still in the immature stage. Ordinary consumers had little knowledge on this part, plus lacking of uniform standards, many consumers had on ideal of how to choose suitable LED controllers for their LED lighting devices.

 

LED controllers control every switch in LED control circuits via chip processing.

 

  1. LED controllers for low-power LED devices:

The normal working voltage of low-voltage LED devices is usually 12VDC-24VDC, normally 3-6 series in each branch, using current-limiting resistances to control the current in each branch under 20mA. Multi-branch LED lighting devices have both advantages and disadvantages. Advantages: low-voltage, simple structure, simple design; disadvantages: high current in large-scale applications, low-voltage switching power supply required. Low-voltage cannot realize long-distance transmission. Usually electronic devices with low input voltages are relatively small, like billboards, advertising signs, etc. According to this feature, controllers for small LED lighting devices have their own design specifications: 12V LED lamps are usually controlled by 75A/30V MOS power transistors. 24-36V LED devices are usually controlled by 60A/50V MOS power transistors.

 

  1. LED controllers for high-power LED devices:

High-power LED products work under 220VAC (or different AC in different countries). There are usually 36-48 LED chips connected in series in one branch. The normal working current for each branch is less than 20mA. There are two major current-limiting methods: a. current limitation though resistors. Demerit of this method is high power consumption. It is recommended that using 1/4W metal mold resistors after each four series LEDs, to dissipate the heat evenly. Currently, this is the most stable method. Another method is limiting the current via resistor-capacitor connecting in series. By doing so, most potential will drop on capacitors, low power consumption, only can be used in a stable long bright state.

 

  1. Low-voltage LED devices + DMX 512 controllers:

Many architectural and decorative led high bay light projects need to use a large number of LED lighting products. At present only DMX 512 controllers could realize multi-branch control. There are two methods: a. Achieving the purpose of control through serial signal transmission; b. Achieving the purpose of control through parallel signal; In order to avoid the drawback of serial signal chips (easily damaged), DMX 512 controllers adapt parallel connecting of their signal lines. Thus the failure of one branch has no influences on other branches.

Solar-related LED lighting business is supported by the government

LED industry is the main content of National strategic industries. In recent years, the government has launched a series of support policies. The current industrial prosperous closely related to the encouraging policies of the government, especially for solar-related LED lighting business. In order to obtain sustainable developments in semiconductor technology and renewable resources industry, solar-related LED lighting business was no doubt a breakthrough. It is expected that the corresponding market would be full of potentials and opportunities.

 

Solar-related LED lighting business is supported by the government

 

According to recent relevant announcement, the State Council, the National Development and Reform Commission, the Ministry of Industry and Information Technology, the Ministry of Science and Technology respectively put forward long-term positive plans to support technology innovation / upgrading, application promoting in LED industry, including solar-related LED lighting business.

 

From central government to local governments, all levels of institutions changed the focus from investments and supports to market promotion and support. The State Council has recently release the latest subsidy mode for LED energy-saving lighting products. In addition, local governments all over the country started to replace the old MOCVD production line subsidy mode by support strategy to help local LED-related enterprises to occupy the market. Both of these two them predicted the changes of the government’s support strategy: from investment supports to application promoting supports. This is an important symbol of the developing transition of LED industry. It also means that LED lighting market will path into a mass-market application epoch.

 

As important measures for the transformation of the economic developing modes and adjustments of industrial structure, LED and semiconductor lighting has been listed as the new seven strategic emerging industries. On 16th May this year, the State Council executive meeting decided to implement energy-saving projects, launching 4 types of related subsidies, including high-efficiency lamps (energy-saving lamps and LED lights). On 19th July, the National Development and Reform Commission released the 2012/2013 annual financial subsidy policy to promote semiconductor (LED) lighting products. To support the technical innovations of led high bay light and semiconductor lighting, the Ministry of Industry and Information Technology arranged a series of developing projects for electronic information industry, as an important measure of autonomy support for LED innovations. Subsidies used in key technological breakthroughs, technology development, test method development and capability enhancement.

Brightness limitation of LED billboards

Large LED screens that set up outside the buildings always flash blindly. Will flashed neon out of the window kept you from sleeping during the summer night? According to Tu Haiming, CPPCC member, Shanghai will be divided into four sections in accordance with the brightness of environment and different functional properties. By then, the brightness of LED billboards, LED advertising screens will be limited.

 

Large LED screens that set up outside the buildings always flash blindly.

 

“I crossed through this intersection every day after work. I need to wear sunglasses, since the intense light from these screens caused glare and made us easily to run red lights. ” This is a “scared” intersection for many new hands, like Mr. Lee, whose driving age is only one year. Located between Middle Henan Rd and East Nanjing Rd, a huge LED advertising screen was installed on the out wall of one building along the street. When night fell, the bright colorful light coming from the screen greatly attracted pedestrians, but also issued harsh light.

 

In one recently handed in report, Mr. Tu Haiming indicated pointed out that many aspects in the management and supervision of light pollution are still in a blank state: definition of light pollution; testing standards; definition of liability; government authorities and penalties. The first local standard to limit light pollution “Urban Environment (Decorative) Lighting Specification” was introduced on 1st September of 2004 in Shanghai. However, this is an industry standard, having no legal force. Besides, this specification only limited the brightness of traditional outdoor advertising signs and billboards, but without any related regulations for LED billions and outdoor screens.

 

In the aspect of the supervisory subjects, the Environmental Protection Department implied that they had no legal protection. Thus it is rather difficult for them to manage the light pollution, like air pollution and water pollution. The Environmental Protection Department only can cope with led high bay light pollutions caused by outdoor landscape lighting fixtures, while surface reflections coming from building outside walls usually under the management of Construction Management Office.

 

In this regard, the Shanghai Green and Urban Appearance Bureau (SGUAB) is drafting regulations for Shanghai landscape lighting facilities, laying claim in aspects of planning, construction, utilization, maintenance, energy conservation, pollution control and other specific requirements. SGUAB also released relevant rules to control the brightness outdoor LED landscape light-emitting facilities, including LED billboards.

led lightings for Chinese medical lighting

Abstract: medical illumination LED can adopt the integral solution, namely special lighting and general lighting, detection, treatment and functional lighting package upgrade, realize energy saving, reducing lighting costs.
LED light source to replace the traditional light sources used in medical illumination, which is the lighting industry energy saving and emission reduction, product upgrading important aspects. In our country, he medical field of lighting products, functional lighting, all belonging to the medical appliance category, a higher threshold for access, manufacturers of products subject to state food and Drug Administration permission. General led lightings enterprises support the difficulties. While the medical device quality enterprises is not very familiar with the characteristics of LED lighting, thereby forming a blind area, make foreign products headed.

led lightings for Chinese medical lighting

In recent years, GE, OSRAM, PHILIP and Japan Toyota, Toshiba Multi-National Corporation such as led lightings and light therapy in medical product development aspects of the larger investment, they have the traditional source medical equipment which can hold the market power of discourse.

From the United States to purchase a double-headed xenon operation shadowless lamp price 20 thousand rmb, the German Martin shadowless lamp price is as high as 600 thousand rmb . The Multi-National Corporation produce traditional products; on the other hand, they also actively promote the led tube light medical product development. In 2004, the United States, Germany, Russia began to use the LED shadowless lamp.

Obvisiouly, the medical field source of domestic equipment is very urgent, this also is to reduce patients’ medical burden and it is one of the effective ways.

Led Industry is in Warlords

At present, the United States and the EU and other developed countries have the core technology and patents in global LED industry, but we are lack of core technology and patents, at the same time there is no unified standard, cooperative price; in addition, the product price confusion, quality is uneven. According to the insiders, currently, the LED industry has been showing a Warlords.

Industrial investment in boom season

LED is capable of converting electrical energy into light energy of the semiconductor, as the world’s most popular new generation light source, this was listed as one of 7 strategic emerging industry, its enormous opportunities attract various capital.

Led Industry is in Warlords

According to public data shows, at present our country LED manufacturer is more than 8000, and every year hundreds of consummate about 1000 speed continues is increasing.

The reporter learns, nearly half a year, a total of 8 domestic home LED industry company is appearing on the market successfully, of which 6 gem landing, The speed showing in the market is astonishing, last year LED company has 7. On the other hand, in recent years, the domestic small and medium-sized enterprise is failed. In Shenzhen, failure of LED lighting enterprises more than 80, Guangdong Foshan, nearly a LED lighting business, Dongguan, Zhongshan LED lighting enterprise is in failure wave in 2011.

At the same time, foreign capital is in China to get ready for battle. A few days ago, Taiwan East Bay photoelectric Group invested $25000000 in led tube light optoelectronic devices production projects, in Beijing digital television industry park officially started construction, the future will supply the region of North China LED lighting. In addition, this year May, OSRAM signed with Wuxi, in the new local LED assembly plant, which is expected to complete and put into production by the end of 2013, the main LED chip package casing. Following the innovation center in Chengdu formal operation, GE lighting innovation center was also established in xi’an.

Why solar roof performance lighting systems are difficult to promote(3)?

need to strengthen the science to overcome technical difficulties, and reduce costs

How close does solar energy away from the lives of ordinary citizens? Exactly how the development of the solar energy industry and in people’s daily life? Why city residents solar roof performance lighting systems difficult to promote? Reporter learned from industry experts, the new solar energy applications space and industrial development space is huge, future trends, but large-scale applications also need to strengthen science, overcome technical difficulties, and policy support.

performance lighting systems

Need to further promote solar led tube light energy science

“Solar is getting closer and away from the lives of ordinary people, just the majority of people do not have an intuitive feel.” Secretary-General of the Shenzhen Solar Energy Society Girl told reporters, such as solar street lights, located in Shenzhen Binhai Avenue Garden Expo Shenzhen 1 MW grid-connected solar photovoltaic power plants, the Civic Center has just completed the underground garage of solar performance lighting systems, and solar energy are closely related.

Solar energy get contact with our basic necessities, including residents in the supermarket to buy organic vegetables, may use solar insecticidal lamps “pest control, as well as members of the public are usually very easy to buy solar shook doll, those are application of solar energy products. Zhang Nannan think these new practical products get closer to the new energy and the distance of the homes of ordinary people, which is a good breakthrough point and conform to a customer-oriented market. It have laid a good basis for starting the domestic market for solar energy companies and to further explore the international market. In the daily lives, the understanding of ordinary people in the application of solar energy is also limited to the solar water heater. Solar lighting, BIPV is not enough to understand, this solar energy science needs to be further promoted.

Can LED help the development of commercial light into the golden years(2)

Although current LED industry development is fiery, but in fact the LED business is not mature stage according to product application technology. Business is also more marked in a large quantity of small power products according to business research and development of LED products, such as LED ceiling light, car aluminum lights, downlights, Grille. LED, according to the application, will choose the hotel The clubhouse project to make the standard version.

Can LED help the development of commercial light into the golden years(2)

Earlier in the lighting industry, the “golden years” of development has commercial lighting. From 1997 to 2007 can be described in the rise of commercial lighting leader brand logo business according to market “gold” season. In 2008, the outbreak of the financial tsunami, commercial light “golden years” ahead of the end? Next decade the brand PK tournament preview? 2009, led tube light industry is “speculation” hot. With the increased number of firms to enter the field of LED lighting brand, a brand of contention will be inevitable. The involvement of traditional commercial brand enterprises, the overall market for LED lighting pros and cons, after all, the traditional commercial experience in the successful operation of the product may not be suitable for LED lighting. So in the era of brand competition, the LED business according to timely advance proudly in front of “the four corners of the theory?

“The four corners of the theory store summarized into four main categories: cheap, simple display of goods, with the characteristics of community service shops; cheaper price and more merchandise display, self-service shops; certain grade, more expensive but pay attention to the display of goods and quality, focusing on decorative shop shopping store is a pleasure; commodity grades expensive top merchandise stores. Has a unique, style-conscious environment and a high level of service, and to provide the best and luxury goods shops.

Based on market segmentation model established in the four corners of the theory “- shops, stores exhibit their own distinct style, image and personality characteristics of the four types. The first two stores in the concept of the customer in commercial light, is a highly functional store to meet basic shopping behavior typical characteristics; especially the latter two brand stores, a prominent feature of the stylish, elegant and refined to meet customers seeking fashion and stimulate mental performance elegant taste.

Can LED help the development of commercial light into the golden years(1)

LED is a new thing, so the acceptance of the general public at this stage is not high, but it is inevitable to replace traditional commercial products. Its obvious advantages: 1, long life compared to traditional commercial products; 2, high luminous efficiency, energy saving and environmental protection;, environmental protection; 4, no strobe; 5, no radiation and low power consumption; 6 rich color. But comparatively speaking, the LED business have  some disadvantages: 1, expensive; 2, the heat problem should focus on solving. The large-scale expansion delay for LED products is a large extent by the impact of the price, but I believe the next 2-3 within the LED large-scale entry business according to LED commercial light is an inevitable result.

Can LED help the development of commercial light into the golden years(1)

Lexus lighting from the established Lexus LED optoelectronics division began, has been focused led tube light according to the field, and now there are about 10 series, 500 variety of lamps sold at home and abroad. Lexus lighting business according to product lines mainly in the chain of high-end brands, application solutions focus on the following two points: First, consider energy conservation and environmental protection, saving customers the initial capital investment, and optimize its energy-saving effect, to allow customers to actually feel the energy saving effect. Second, the overall light cloth to consider performance LED rich color contrast to enhance the grade of the entire store, and the customer’s desire to buy.

It is reported, NVC lighting and Sidon lighting has launched the LED business according to product, and applied to the project, including Sidon lighting has increased R & D and promote the application of LED commercial light products; Zhongshan Changlong lighting for led tube light business according to the product, said to have been concerned about and are looking for a good partner; the Shenzhen Hualong lighting has been focusing on the production of the LED according to intensify promotion in 2009, large-scale nationwide investment by the Lighting Weekly “resource platform. They began to source invisible channels; and Zhongshan lighting now is paying attention and devoting their energies to the LED business according to product development, and produce LED patent products, the grand launch in the near future worth looking forward to.

White led lightings will be the popular product

In many families, institutions, government and industrial applications, high brightness ( HB ) white LED ( light emitting diode ) is rapidly replacing the incandescent lamp. In the past year, white led lightings system in general lighting applications accounted for more than 50%, eventually more than color LED applications which is mainly affected by the color illuminating aesthetic demand driven. White LED lighting is driving force for samples reasons: low energy consumption leads to much lower electricity.

White led lightings will be the popular product

In many cases, LED higher efficiency may be reduced by as much as 88% power consumption. They also greatly reduced for lighting and power generation and transmission of electricity caused by carbon dioxide emissions. According to Strategies Unlimited’s research white led lightings market is expected to exceed $5 billion. This is just the beginning, because in the LED Panel Light luminous efficiency continuesly to accelerate the commercial / residential lighting market from an incandescent lamp, fluorescent lamp and high pressure sodium lamp to high-brightness, white LED change at the same time, LED is much more cost-effective.

By some estimates, incandescent and fluorescent lamps to LED lighting can make the current global energy savings of up to 10% traditinally. Along with the efforts to reduce the power generated by the total carbon dioxide emissions, global illumination reduces 10% ,which played a great role in promoting.
What factors support such a huge growth? First of all, the current generation of LED luminous efficiency is 10 times higher than incandescent lamps, fluorescent lamp and high pressure sodium ( HPS ) more than two times, which greatly reduces the required light output ( measured in lumens ). With the further development of LED, they rely on the power light emitting efficiency continually improved, but it’s expected in the next few years .

secondly, about environmental protection in the world, led lightings does not need treatment, exposure and removal of fluorescent lamp in the common toxic mercury vapor. Most of the residential lighting system for cold cathode fluorescent lamp ( CCFL ) containing up to 5mg of mercury, and the greater light containing mercury will be much more!

In third, the incandescent lamp every 1000 hours will be replaced by the fluorescent lamp, and sustainable. in contrast, LED’s life over 100000 hours. In most applications, this allows the LED permanently embedded into the final application.

Can LED help the development of commercial light into the golden years(3)

The build of commercial space lighting environment  must pay attention to  high efficiency and energy saving function of lighting equipment.Commercial construction at the begining of  the planning and design stage should be introduced into the overall lighting energy-saving concept, reasonably choose light source, Reasonably get the natural lighting, reasonably design space illumination and reasonable control and management lighting system. Lighting enterprises begin to plan to commercial light design, first of all need to understand the culture and spirit of the engineering area.The main purpose of commercial lighting design .On the one hand is in shaping the image of the store itself, strengthen its culture and the characteristics of products; on the other hand, can attract the attention of customers and let the products become the focus, at the same time let the light environment create a comfortable and has a dramatic effect too.

Can LED help the development of commercial light into the golden years(3)

From the technical level to see, the future LED to replace traditional lighting will be more and more mature, the stability of LED products will be improved further. On the LED industry the personage,  the key factor of LED lighting industry whether can be promoted  is the price. Especially to the civil domain, the price factor is more sensitive.Therefore, to provide superior quality and cheap price of LED lamps  is the key to promote LED Panel Light market development in the future.

LED gradually enter the market at present, besides let the customer feel the convenience of replacement, LED lighting enterprises should also use LED colorful and intelligent features to  provide more new elements for commercial light areas.