日期：2012年8月15日

Talked about the lighting industry in China “exports and domestic sales”

The industrialization in developed countries has been completed, the process of urbanization in city has apparently slowdown. Habitat plain near consumer has entered the service sector, the basic stability of the demand for lighting products. However, the pace of mediation of industrial structure in developed countries did not stop. Some labor-intensive industries continue to make substantial transfer to developing countries(view led lights), making a difference in the degree of developed countries, domestic coherent industry supply some landing lighting industry products for the Chinese to go abroad create a certain market space.

lighting industry

Lamps exports: for example the 2010 Guangdong Zhongshan lighting

In 2010, Zhongshan lighting value of exports reached $ 1.348 billion,  ranking the biggest this year, an increase of 37%. Zhongshan, electric light and lighting are the main exports to other regions like Europe, USA, Middle East and ASEAN, the EU and the Zhongshan lamps largest export market, export value reached  $ 325 million.US market growth rate ranks the first of four major export markets last year, Zhongshan exports to the U.S. $ 300 million, an increase of 41.5%. The rapid growth of emerging markets, last year, lighting exports to Africa, South American market increased by 107.8% and 78.6%, coming from behind the revival of the Russian market, and increase of up to 72.3%.

On the category of export lamps, LED products increased three times. Last year, LED products, exports of about $ 42,923,000, an increase of 344%, indicating that the LED technology speed up application speed of the electric light and lamps, replace some incandescent and energy-saving lamps needs. At present, Zhongshan has formed a major lighting manufacturers for nearly 20 annual export of over a hundred million, of which some enterprises gradually opened up to Europe and the United States and other high-end market to high-quality products, but most enterprises on an OEM basis to participate in the international division of labor. Thus, the export situation of the entire lighting industry is showing an upward trend of the straight line.   Lighting export enterprises in 2011 is not difficult to see the light.

With the upgrading consumption ability of domestic products, Southwest, Northwest, Northeast and other places have great demand in modern lights. Local consumers with the lighting of the modern style have a lot of stress, which will promote the new type of light source lighting products. The future outlook of domestic lighting industry market is very impressive.

Simple and practical home lights are the king

In recent years, driving by the property market, Lighting consumption develop to the energy conservation, overall development of intelligent, professional lighting store, lighting store are rising. Lighting product design shows a variety of personalization trend, crystal home lights, children’s lighting, creative lighting, all kinds of lighting ranging. It is gratifying that, in the pursuit of individuality at the same time, more and more lighting products began to focus on energy efficiency, green lighting concept has been  the unanimous approval of the businesses and consumers.

home lights

Simple lighting is the more popular one

The person in charge of a dealer Miss Yu said, appliance lighting business in 2010 are off season compared to the previous light. She believes that the biggest reason is the decoration people is relatively few. Qingyuan property prices may be inflated, and invest more.” Some people have two or three suites, actually, they can not live so much, so mostly they invest.

Secondly, lighting shop are getting more and more, competition is intense lighting design style, type of update soon, a shop can not cover every style, competition is inevitable. “Miss Yu said, as a brand to ensure that business still have certain advantages. Such as after-sales service, factory support.

In another aspects, in the product application, simple is the mainstream of lamps in the market. Miss Yu introduced, “the Op products has  always been a concise, easy to clean and more popular.” The modern lamps are in the “light up” to “pretty up” transition, focusing on the decorative and aesthetic effect of the lamps. Many consumers do not like complicated decorations. “Simple is not simple, but taste, simple lighting can better reflect the taste of home.”

LED lights entered the home lighting

With the popularity of green lighting, energy efficient lighting market is more open. At the same time, consumers can largely accept the energy-saving lamps. “Our energy-saving lamps sold well, consumers are aware of the benefits of energy-saving lamps. “Miss Yu introduced, in addition to the ordinary energy-saving lamps, LED home lights are gradually getting popular. If the 2009 is LED landing home lighting “signs of the Year, 2010” Try the year, so 2011 is likely to enter the year.

How far does the gap between reality LED lighting market and the ideal one?

Incandescent will be eliminated, and energy-saving lamps are emerging, LED lights are in the ascendant, but the industry on the LED lighting market prospects and rashness. It is based on LED prospects promising, from the international semiconductor giants to unknown small factory. Some insiders jokes that now is not involved in LED ashamed speaking of the lighting industry.

LED lighting market

However, the industry’s lighting market outlook is very rashness, more concentrated in low-end market, a conservative estimate of 3 yuan of each incandescent lamp. The world’s 2 billion stock market, but six billion; 10 billion energy-saving lamps of 20 yuan but 200 billion, while the high-end intelligent LED lighting market, the report estimated that the capacity will reach $ 200 billion in five years.

The data show that the lighting energy consumption accounted for 22 percent of the world total electricity consumption is green lighting. The significance of 80% power consumption can be reduced from incandescent to energy-saving lamps. When the replacement completed, the global LED lighting market energy consumption will be reduced according to 17% of current NXP chip used in energy-saving lamps of 60 million, equivalent to an annual reduction of 500 million kilograms of carbon dioxide, and future sales is expected to expand 10 times and 20 times, saving significance is enormous. Criticized by the world energy-saving lamps mercury pollution, in fact, there is a great misunderstanding. On the other hand, energy-saving lamps mercury contamination does exist. However, many natural areas have mercury pollution, the relative energy-saving lamps talk about mercury discoloration. Study have shown that the mercury in a energy-saving lamps are less than a marine fish such as salmon sharks.

Right now, International semiconductor giants basically has embarked on the LED layout, NXP already has a chip by 70 005 thousand hours, 105-degree heat of the experimental test, which is the world’s first application-level LED chips, and its SSL2101/2102 since 2009since May, has sold 10 million in May this year, sales momentum, Jin Meng, more than dozens of well-known companies have for dimmable LED bulbs. Which SSL2102 International Lighting Fair in Las Vegas in May 2010 Technology Innovation Award.

For the heat problems that LED lamps designed. Although there has the fan, open and  short-term solution, yes solving the fundamental direction of the LED application is to improve the light efficiency of the same upgrade. LED is also a semiconductor, subjecting to Moore’s Law. The performance will be greatly improved on a regular basis. Talking about the LED market applications, some people think that the direction should be intelligent, innovative lighting.

Cooling design of high-power LED tunnel lights

LED is a type of photoelectric devices. Take the existing most advanced high-power LED chips for instance, the conversion from electrical energy to optical energy is only 15%-20%, far less than the requirements of most industrial applications and commercial applications. The rest 85%-80% energy will be transformed into heat, keeping LEDs in an over-heated state. That is the reason why most high-power LED lighting products have relatively short service lives. On the other hands, the luminous flux (lumen output) of LED lights will be reduced with the increase of PN junction temperatures. Thus an incompetent cooling design may dramatically cut down the lighting effect and working time of high-power LED tunnel lights.

 

Thus an incompetent cooling design may dramatically cut down the lighting effect and working time of high-power LED tunnel lights.

 

Currently, there are three major solutions for cooling technology of high-power LED tunnel lights: 1) natural cooling. Adding fans/ventilators and heat pipes/sinks to assist cooling. Natural heat dissipation is base on natural convection and thermal radiation, reliable structure, waterproof, but strict in the structure design, cannot be easily handled. Normally, the practical effects are far less than the theoretical results. 2) Mandatory cooling through fans/ventilators on the base of forced convection. This method can provide a much faster cooling effect, but generate more noise and cost a lot, hard for waterproof. 3) Mandatory cooling through heat pipes/sinks. This technology takes the use of heat pipes to conduct unwanted thermal energy to heat sinks/pins to realize a rapid thermal dissipation. There are no other motion compartments and the entire system is more stable, but correspondingly cost a lot.

 

Different from ordinary roads, tunnels have many special properties. Mandatory cooling with the help of heat pipes and heat sinks would be the most suitable cooling technology for high-power LED tunnel lights among three. The vertical design of heat dissipation channel can realize the modularization of cooling section. Normally, high-power LED lamps using this cooling method can maintain a working temperature below 70℃, keeping LED chips working in a stable low-light-attenuation state, improving the maintenance factor to save more maintenance costs.

 

According to the airflow characteristics within tunnels, scientists usually made asymmetry ventilation designs, ensuring the air convection cooling. Meanwhile these asymmetry designs also can reduce the mass of soot and other pollutions generated by vehicles to enter the cooling chamber. These dusts may probably absorbed by cooling devices and reduce heat dissipation effects.