ALLTOP Lighting's Best Led Lighting

Most people believe that high brightness LED, HBLED) Will be a wise choice of lighting in the end. HBLED manufacturers greatly improve the product on the number of lumens per watt, continuously improve the product efficiency, it also makes the HBLED has become more and more popular. Believe that soon after, the LED on the number of lumens per watt will be much more than now level of fluorescent lamp.
LED lighting first replacement is mainly used in low voltage to shoot the light and track light these two areas. Including the standard size of replacing the original lamps and lanterns, such as: MR16, PAR20, PAR25, PAR30 PAR38. National semiconductor ( NS company) Has provided a variety of solutions used to beautify the LED, make it suitable for these occasions, including LM342X and LM340X series of LED driver. But no matter how the LED driver, they all face a common problem: how to heat dissipation. For these small size package, simply rely on the free flow of air to the role of heat sink is often not enough. This enables the designer must consider to add some to forced air flow fixtures. According to the size of the device, the most common way is to use dc fan, or adopt Synjet Nuventix company as a more delicate and durable solutions. Fans tend to save money, can be on the 5 v or 12 v dc voltage, but it is not easy to embed the lighting device, at the same time, the service life of the fan is tens of thousands of hours at most. Synjet, on the other hand, is designed specifically for these lighting installation, working voltage is 5 v dc, and the service life can be up to 100000 hours.
the standard input of these systems can be a dc or ac system. 12 v and 24 v ac system has been widely used in low voltage lighting system, at the same time 12 v and 24 v dc system is gradually promotion, and rising popularity. Due to the 12 v system is very common, so to design and drive a 5 v of the cooling system is not difficult. But it is precisely because there are so many systems, the distribution of the input voltage range will be very extensive, especially for ac input, the ideal situation is to be able to have a solution to a wide input voltage range for conversion, thus providing 5 v voltage, at the same time occupied space is small, can be easily embedded into the lighting device. Fortunately for small devices, LM2842 can well realize the above requirements, the similar models of LM2841 can also do it.
dc input system can be used as the input voltage transformer will be wider than directly into 5 v, which is the most easy and simple solution. Typical solution including the fan and the Synjet needed to drive current between 100 ~ 600 ma. LM2841 can provide current of 300 ma for small cooling system, LM2842 to power for the bigger, stronger cooling system to provide the current of 600 ma. Figure 1 shows the LM2842 design input voltage is dc 12 v or 24 v dc, can provide the required 5 v voltage. The whole scheme can provide up to 600 ma of current, to take up about a quarter of the PCB ( Printed circuit board) Area, so that it can be easily embedded into any improvement device. LM2841 based on exactly the same design, specifically for low current applications, and also allows the use of small physical inductance, which takes up less space.

however, as mentioned above, a number of 12 v and 24 v ac system is widely used, people are more hope they can continue to work after the improvement, rather than with more advanced dc system directly to replace it outright. This means that the design must be considered in a wider range of input voltage. To achieve this goal, you can simply use the bridge rectifier and a large number of AC - input capacitance of the original DC rectifier. Considering the line tolerance, 24 v ac system can provide the peak voltage will be 40 v. But if the minimizing input capacitance, the input voltage will be dropped to 10 ~ 12 v. LM2841 and LM2842 allow input voltage changes in a wide range, can provide enough power declined to ( 拒绝) And ensure the stable at 5 v output voltage accurately. Figure 2 and figure 3 respectively gives the ac 12 v and 24 v ac circuit diagram of the system.

here are a few things to note. Has the high RMS voltage 24 v ac input, make LM2842 current will be smaller. It also has a higher peak. For these reasons, LM2842 a smaller input capacitance can be used to maintain the operation of the reasonable input voltage. At the same time, it is important to note that the circuit in figure 2 and figure 3 is aimed at 600 ma the integrity of the output voltage is designed. Because of this, the obvious is that if the cooling system using low current, so the smaller input capacitance can be used in further circuit size. For example, if the LM2842 is replaced with LM2841, maximum output current is 300 ma, thus the input capacitance can be cut in half.

if you have the correct drive tools, LED thermal management will no longer be difficult problem.

Just as the price of phosphor has increased by 10 times and the cost of energy-saving lamps has increased sharply, its competitor LED lights have recently continued to fall due to the price reduction of upstream chips. The author learned from a number of lighting companies that in the past year, LED chips fell from 6 yuan to 2 yuan, driving LED lights down by 30%, with an average price of 30- 100 yuan, only 10 yuan, but the quality is mixed. The price of LED lamps is close to that of energy-saving lamps. The price of 1 watt LED chips two years ago was about 3 US dollars, but now it has dropped to less than 1 US dollar. Some chips made in Taiwan and the mainland are cheaper, even 3 yuan a grain. Wu Yulin, president of Foshan Lighting Association, told the author. Xurui Optoelectronics, which started production of LED chips in May, told the author that in the past year, the price of chips has dropped from more than 6 yuan to more than 2 yuan. It is understood that chips account for at least 1/3 of the cost of LED lamps, and the price reduction of chips directly drives down the price of LED lamps. As chip prices have dropped by about 20% per year in recent years, the price of LED lamps has also dropped from 7-10 times, down to the recent 3-4 times. At present, the price of energy-saving lamps has been stable at 6- 10 yuan, the general LED lamp price is from 50-300 yuan to 30-More than 100 yuan. Wu Yulin said that three years ago, his 9-watt LED lamp exported to Germany by kaixiou Co. , Ltd. was priced at $30. As the chip price continued to decline, it has dropped to $10. The sales volume of LED lights increased by more than 10%. The author visited Wal-Mart and Weiguo road lighting stores in Chancheng yesterday and learned that the sales volume of LED lights generally increased by 10-30. In the past year, the price of LED products has generally decreased by 30, and the price of mid-range LED lights is about 100 to 300 yuan. Our business has maintained a growth of 10 in the past two months. Ou Jingyang, business representative of qiangguang environmental protection Lighting Co. , Ltd. , which is operating at Weiguo Road, said. At the same time as the chip price cuts, the market also began to appear low-priced and inferior LED lights. Luo Jianguo, general manager of LED manufacturer Foshan Songbei Optoelectronics Technology Co. , Ltd. , told the author that 10 yuan LED lights with the same price as energy-saving lamps have appeared on the market. However, the quality is very poor, and the price of LED lights will definitely go down. I estimate that they will gradually enter ordinary families in batches next year.

In the lighting market model, it is estimated that the annual compound growth rate of the overall lighting terminal market will be about 5 in the next five years, and the long-term compound growth rate will be 3. The growth forecast of the terminal market is mainly based on expectations of construction speed, automobile output, etc. The long-term growth rate is expected to be consistent with the sustainable growth rate of GDP of 3. According to the lighting model, it is expected that the annual compound growth rate of LED lighting revenue will reach about 30 in the next six years and 24 in the next 10 years, driven by factors such as rising penetration rate, increased consumer awareness, and legislation prohibiting the sale of incandescent lamps. We also expect the compound annual growth rate of the traditional incandescent lamp market in the next 10 years to be-5. The lighting Terminal Market is subdivided into seven parts: office building and education, industry, automobile, residence, other indoor, outdoor and building. We expect the LED market to grow strongly in most areas as prices continue to fall and consumer awareness increases. The penetration rate in the residential sector is low today, but this situation will change with legislation prohibiting incandescent lamp sales and retailers pushing LED lights. On the other hand, in the outdoor field, LED lighting has already provided attractive cost performance, and its replacement cost is lower than that in other fields. Professional use the professional use of LED is more attractive from a financial point of view, because the energy and maintenance costs in this field are much higher, so the higher price of LED can be offset by the reduction of existing costs. In the current analysis of residential use, we assume that the lights are turned on for 6 hours a day. In the commercial field, the use time may be much longer. If we assume that a light bulb is turned on for 12 hours a day, the current period may be further shortened to one year. We believe that the current period is short enough, so as consumer awareness increases, the penetration rate will rise significantly. LED can greatly save energy, so LED is more attractive when the cost of electricity increases. In addition, LED provides greater flexibility in controlling color and temperature. Household LED in the residential market, for consumers, the upfront cost of use is more important than the total cost. In the past, compared with CFL bulbs, the advantages of LED bulbs were not obvious, because the original price of LED bulbs was much higher, which meant that the penetration rate of LED lighting in the residential market was still very low. But looking ahead, we expect LED to be more competitive than CFL in the next few years because its cost performance is still improving rapidly. We also believe that the upfront cost of LED bulbs (Retail Price) It may fall back quickly to match the price of CFL bulbs. Another growth driver for household LED is that interior designers/new buildings will use LED lighting more actively. In addition, information on the cost advantages of using LED bulbs will be transmitted, and consumers will begin to appreciate the design, controllability and flexibility of LED lamps. LED lights have other value-added features, such as the ability to change colors to match different atmospheres and occasions.

The era of LED lighting is coming, and the LED chips of FlipChip are beginning to enter the market of backlight and lighting. The new technology drives the market demand, which makes the LED factory optimistic about the industry and company performance this year. It is estimated that there is no off season for the LED industry this year, under the blessing of the market, today's LED stocks rose sharply, and among them, the low-priced LED stocks performed well. Guanglei, adisen, Huaxing and Guangding all attacked the daily limit. Incandescent bulbs have been banned one after another, and the price of LED lighting products has dropped, which has triggered market demand. In addition, LED chips of FlipChip have begun to enter the backlight and lighting market. let the Taiwan LED factory get out of the mud of the mainland LED factory price competition, and this year's performance returns to the growth track. With the recovery of the LED industry, LED stocks have been buying since last December, and the stock price has risen sharply. Although the Taiwan stock market opened in February 5, it was pulled back by the stock market, but it rose again today. guanglei, AI Disen, Huaxing and Guangding all attacked the daily limit board. The crystal disk also attacked the NT $70 level, and the LED group's stock price performed well.

Since the concept of 'smart city' was put forward, the intelligent practice and application effects of a new generation of information technology characterized by intelligence in transportation, energy, medical treatment and education have gradually emerged. In the future, this will become an important part of the construction of infrastructure and public services, with the ultimate goal of facilitating the lives of ordinary people.

　　 Energy saving and emission reduction + remote management and control Start lighting 'smart' state

　　 Smart lighting is an important part of the 'Smart City'. It uses urban sensor networks and power carrier technology to connect the street lights in the city to form an 'Internet of ThingsPerform processing and analysis, and make intelligent responses and intelligent decision support for various needs including people's livelihood, environment, public safety, etc., so that urban living lighting can reach a 'smart' state.

　　 The accelerated development of the urban lighting industry has greatly increased the number of lighting facilities and more complex lighting control requirements. Only through intelligent control systems can the refined management of urban lighting be realized. The street lamp adopts LED street lamp + 'Internet of Things' single lamp intelligent control system, each lamp has a unique code, corresponding to the corresponding position, and the 'Internet of Things' method is used to introduce the information of each lamp into the lighting equipment network. Innovatively establish a set of information system that can cover the entire city's street lights, thereby completely changing the backward management level of street lights. Street lights and light poles are densely distributed in the city, which has the advantages of convenient networking and access to electricity. In the future, they will become an indispensable data carrier for the perception layer in the construction of 'smart cities'. Other functions can be expanded in the future, such as security monitoring, charging Pile, city WIFI, etc.

　　 In accordance with the national requirements for energy saving and emission reduction work of provincial and municipal governments, the renovation project adopts low-emission, high-illuminance, high-efficiency and energy-saving, anti-haze 'fifth-generation solar-color LED intelligent energy-saving lamps' and 'fourth-generation intelligent 'Nano energy-saving street lamps' and advanced urban street lamp lighting intelligent management system transform the street lamp lighting and pipe network, which are green and environmentally friendly and pollution-free compared with traditional lamps.

　　Government + Enterprise Join Forces to Promote Smart Construction

　　 With the advancement of domestic urbanization and the subsequent upgrading of road traffic and the transformation of urban appearance, urban road lighting and urban landscape lighting industries have achieved rapid development, and their market scale will also be in the existing Further expand on the basis of the. Smart city construction is a complex system project. The traditional government-based model cannot meet investment needs. More market forces and social forces are needed to participate. It has become an inevitable choice to introduce market mechanisms into the construction of 'smart cities'. Many companies are also changing their roles as 'smart city operators.'

　　 Who should be the main body of the construction and operation of 'smart cities'? It is understood that many pilot cities have gone through some detours. The early construction of 'smart cities' generally has the characteristics of decentralized design and separate operations. It is difficult for departments and departments, systems and systems to become a coordinated whole due to issues such as standards, technology, and institutional mechanisms, which greatly compromises the integrity and systemicity of 'smart cities'. Practice has proved that the construction of a 'smart city' requires the introduction of more social forces to participate together, adopting a diversified development model of joint construction and operation, and no independent party can be a 'smart city'.

　　 'Smart City' is a superposition of countless 'Internet +Of the common people, reconstruct the entire city’s industries and make city management more convenient.