标签：solar led street lamp

solar led street lamp and quality

How to control and improve the quality of full color LED display? What is the important indicator reflecting the quality of the full color LED display LED? The first LED devices as the most critical components of the full-color LED display for three reasons:

solar led street lamp and quality

First, LED full color machine used in the largest number of devices per square meter will be used only a few thousand to tens of thousands of led lights;

Secondly, LED is to determine the main body of the optical display performance of the entire screen, a direct impact on the evaluation of the audience on the screen;

Again, LED display the overall cost of the proportion of the largest, ranging from 30% to 70%. LED choice determines the quality of more than 50% of the entire display. If not other parts of the good LED, display, even the best can not make up the display quality defects.

Reflect the quality of the full color LED display LED indicators are:

First, the failure rate

The full-color display by the tens of thousands or even hundreds of thousands of clusters of red, green, composed of blue LED pixel composition of any one color of LED failure will affect the display of the overall visual effect. In general, industry experience in the LED display assembly to the aging failure rate in the 72 hours before shipping should be no higher than three ten thousandths (LED device itself causes the failure).

Second, the antistatic ability

LEDs are semiconductor devices sensitive to static electricity can easily cause static failure, antistatic ability is critical to the life of the display. In general, LED’s body static mode test failure voltage should not be less than 2000V.

Third, the attenuation characteristics

Red, green, blue LED bulbs With the increase in working hours, the light attenuation characteristics. The pros and cons of the LED chip, The quality of the auxiliary materials and packaging technology standards determines the level of the decay rate of the LED. In general, the light test of 1000 hours, 20 mA at room temperature, the attenuation of the red LED should be less than 10%, blue, green LED attenuation should be less than 15%. Consistent attenuation of red, green, blue, full-color LED display white balance impact, thereby affecting the display fidelity.

Fourth, the brightness

LED brightness is an important determinant of the brightness of the display. LED brightness higher the margin the greater the current, on the saving power, to keep the LED stability is good. The LED has a different value of the angle, the case of chip brightness has been set, the smaller the angle, LED is more bright, but the smaller the viewing angle. 100 degree LED general should be chosen in order to ensure a sufficient display of perspective. Different spacing and different line of sight of the display brightness, angle, and the price to find a balance.

Five, consistency

Full-color display is composed of numerous red, green, blue LED pixel blocks, the brightness of the LED panel of each color, the consistency of the wavelength determines the brightness of the display consistency, white balance, consistency, chroma consistency. In general, the display manufacturers require device suppliers to 5nm in the wavelength range and 1:1.3 brightness range of LEDs, these indicators reach by the device supplier through the color separation machine grading. Voltage consistency is generally not required.

 

The perplexity faced by solar LED street lamp energy management contract model

According to the characteristic of “contract energy management”mode, a comprehensive analysis of the LED lights on the confusion of the process of implementation of  ” contract energy management “mode, and proposed the government to play a lending role, which is the current implementation of solar led street lamp in the city.

The perplexity faced by solar LED street lamp energy management contract model

As energy consumption country, China unit of GDP energy consumption is 3 times higher than in advanced countries. The production of specific power consumption of unit product is high from 50% to100% than developed countries. China is undergoing the transition from planned economy to market economy changing period. The original planned economy energy saving management system of solar led street lamp is more and more which can not adapt to the new situation, therefore, it is necessary to introduce and popularize energy-saving work based on market mechanism of energy-saving investment and service.

Energy management contract (EMC) is the arisen new energy conservation mechanism in the last century of 70’s. It is through energy service contracts signed with clients, for clients including energy audit, project design, project financing, equipment procurement, project construction, equipment installation commissioning, personnel training, recognition and energy saving service. And from the customer for energy saving in energy efficiency obtained profits of a business operation. Its essence is to reduce the energy costs to pay the full cost of energy saving project investment. This energy-saving investment mode allows the user to use the future energy-saving benefits for plant and equipment upgrades, reducing the operation costs, improving the efficiency of energy use.

The pattern has the following characteristics for solar led street lamp: one is the energy consumption enterprises without funds to complete the energy-saving technological transformation, which is so called “zero input”. second is the EMC liable for technical and economic risks, energy consumption enterprises pay to EMC payments from energy saving the project benefit, the user” zero risk”; three is the end of the contract energy saving equipment saving equipment and follow-up. and all the energy efficiency go back to energy consumption LED Downlight enterprises.

Contract energy management to a great extent handled the factors which emerged in energy conservation. It achieve win-win situation, and indeed a effective energy-saving invest mechanism, new pattern, which can be popularized quickly in the market mechanism and become the mainstream model of energy saving investment in Europe.

Too high maintenance costs led to solar led street lamp forced to dismantle

It is reported that Shanghai Hongqiao transportation hub, a kilometers of trunk roads is actually a dark, brought great inconvenience to the people to travel at night. According to the people around here is the original street, and later demolished all. However, solar led street lamp and Eneltec LED high bay, the area of ​​the establishment of diplomatic relations Committee, said the demolition of street lights to the laying of a new batch of street lights, the project is expected to start after the Spring Festival next year. At present, the entire route in addition to some of the light side due to the airfield lighting slightly, almost completely dark without led street light, passing vehicles and pedestrians had to carefully.

Too high maintenance costs led to solar led street lamp forced to dismantle

This road is a trunk road of the Hongqiao Integrated Transport Hub, opened to traffic on March 16 last year, solar led street lamp, the North Alliance Rainbow Road from south welcome all the way to a total length of more than 1600 m. However, the original road street, all street lights, long ago, not long ago was all dismantled. As the street lights were originally installed as a temporary street lights energy efficient street light pilot, coupled with high maintenance costs, has not been included in the range of conservation of the City street by the side of construction to bear these costs, so the removal of this group of LED street lights, it is The next formal street lights do laying.
It is understood that the construction side of the section has been submitted to the city street lights street lights laying applications, solar led street lamp, as long as the funding is in place, and then through a series of site survey, engineering sorting process can commence.

The new era of solar led street lamp and innovative

From the oldest of sodium to the now prevalent solar street lights, a new generation ofwind energy street lights was born in the city of sun and wind, solar led street lamp, the night would not exist.At present, the concentrated solar street lights and wind lights in one of the new LED street light in Jiangyin City, Jiangsu Province, shiny presents.

The new era of solar led street lamp and innovative

From the outside, the most noteworthy is that it has two “small cap”, a small windgenerator, a solar panel, solar led street lamp, the two either independent power generation, cogeneration.This two-way energy is transported via a cable to the battery pack be storedautomatically at night for the LED lamps provide electricity.
Experts estimate that this new street light to absorb the energy of the day to meet atleast about 7 days daily demand for electricity for lighting, if there are rainy days can last3-5 days, so more convenient for people.

This morning I deliberately changed clothes. Wearing a weekday I very like the JEEP.But the performances in the afternoon, the morning I have been busy with other things.Because I want to go out inspection Merchants, so there is always a lot of things need to apply for the units. Have probably been so busy eleven o’clock, a principal of the kindergarten came to me and said that the building of their school building is almostcompleted, and wanted me to go and see. I should go and see. Started last year I have participated in the groundbreaking ceremony. Firecrackers crackled across the sky. I did not expect the blink of an eye, solar led street lamp, the building is actually built.

And units went to this school. Because the old school, small in size, but the students.Last year I took office, the initial to them, I feel that the school’s hardware is indeed verypoor. Thus, solar led street lamp and LED high bay, it is in our county the only such school. Remember to see the lovely childrenstudying in that environment, my heart it is not a taste. Especially to see the childrensitting in the table and toys, dilapidated, I face some redness.

 

Korea Research Center LIFTRC VEECO equipment for high-brightness solar led street lamp

Korea Research Center LIFTRC VEECO equipment for high-brightness solar led street lamp

Veeco (VEECO), announced today that South Korea’s LED-IT fusion technology R & D Center (LIFTRC) has been selected TurboDisc ® K465i ™ GaN metal organic chemicalvapor deposition (MOCVD) for the development of high-brightness light-emitting diodes (LEDs), solar led street lamps, including the green LEDs and ultraviolet (UV) LEDs.
LIFTRC director of Lingnan University, Professor of Electronic Engineering, Ja-SoonJang, Dr. said: “Veeco ‘s K465i equipment in a fully automated, low-cost platform to help us research and develop a new generation of LED technology. Veeco’ s leading positionin the industry and localized technical support will help us achieve the goal of cooperationwith local as well as the world’s leading manufacturers. ”

Thanks to the precipitation of the civilization of mankind, let us see their own way to thinkof. A book full of legend,  solar led street lamp, as witnessed and have summarized desire, hope a little of their own perception can share with you will be covered in full force. Do not look at the illness and death as natural, we also lucky enough to survive has been a big blessing, we should say is a miracle. LED high bay Health is full of adventure, Vigor, always accompanied with the happydead silence in the dark, and soil blending. As long as life there is a silver lining in front.

The busy pace will not stop, disordered thinking repeatedly to select. Only know how toenter, thinking into the real choice, because: “the truth” is to fall behind. Logic can not be doubted,  solar led street lamp, whether from the mouth of who is not as important as the penetration of instinct.This indoctrination and cleansing, as if the shape of a bone cell, even if the air-dry the image will not be inverted. I understand in contact with their own, certainly not of their ownabsurdity.
Dr. William J. Miller, executive vice president of Veeco Process Equipment, said: “We are very pleased to TurboDisc K465i MOCVD equipment,  solar led street lamp, various advantages can beLED-IT fusion technology R & D Center (LIFTRC) one of the top scientific researchinstitution recognized and we look forward for LIFTRC its partners to provide support and believe that South Korea will continue to promote the progress of LED technology.
LED-IT Fusion Technology Research Center, Korean Ministry of Knowledge Economydesignated as the Southeast LED IT Fusion Research Center (Technical Support Center).

Solar led street lamp saved energy rate of about 90%

Solar led street lamp saved energy rate of about 90%

LED lamps just how energy-saving? Henderson LED lighting person in charge of Yang Haifeng to reporters calculations, a 6.3-watt the Henderson LED bulb can replace a 60watt incandescent and energy saving of 90%.The life of the LED Light Bulb also have good performance, the standard life expectancy is 30,000 hours, is five times that offluorescent, incandescent lamp 30 times. No ultraviolet and infrared spectra, solar led street lamp the light is not heat, radiation. In addition, the lights mercury-free, recyclable, no pollution.

Cityscape of Nanjing Urban Management Bureau, Deputy Director Liu Xiaoli, Nanjing, 85 percent of the city landscape lighting using LED lights, new construction after 2009, 90%use of LED lights. ”

Liu Xiaoli revealed that the street in Nanjing will also promote the use of LED lights. At present, Nanjing, some sections of the ongoing pilot work, which the Jiefang sectionsinstalled 170 LED lights, Luhe District Longchi near Lake installed 100 Jiang nearNingjin Bao Lu, solar led street lamp also installed some of the LED lights. “Model road tunnel all the LED lights installed.”

Liu Xiaoli, said that the future will consider the promotion of LED lights to meet the meetthe 2013 Asian Youth 2014 Youth Olympic Games and the Nanjing municipal landscapelighting project construction.
In November last year, led high bay, the National Development and Reform Commission announcedthe China phase out incandescent route map, proposed from October 1, 2012, according to the power of the size of a phased, solar led street lamp gradual ban on the import and sale ofgeneral lighting incandescent.

It is reported that in recent years, LED lighting presents a rapid development of the expansion trend. , The future for the use of energy-saving lamps will be in Nanjing waswhat kind of a trend? Liu Xiaoli, said the recent Nanjing will be awarded to the Rules for the Implementation of the Nanjing urban lighting design and construction acceptance, solar led street lamp in which the lighting of the construction work to technical specifications, “as long as build a new project, wanted to have the approval of acceptance of customs, you must useenergy-saving lamps.

Solar LED street lamp: How far can go?

 

Solar LED street lamp: How far can go?

 

LED Engineering Research Institute statistics show that in 2011 China’s LED industry output value reached 154 billion yuan, an increase of 22 percent, production increased by 50%. Expected in 2012 lighting products, led by the industry output value is expected to reach 200 billion yuan, an increase of 30%. In the future, the solar LED street lamp seems to have good prospects. The end of 2011, a professional forum on science and technology ministry official said: “Twelfth Five LE D energy planning national goal: By 2015, LED industry luminous efficiency of lumen to reach 150 lm / W, R & D level of 200 lm / W, life expectancy of 50,000 hours, the market reached 500 billion yuan.

 

This is undoubtedly the development of the entire LED industry pumped full of vitality. However, industry experts, this stretch of prosperity under the lurking no small crisis.

 

Sui Sai Wing, chairman of the Federation of Shenzhen solar LED street lamp Industry, the Secretary-General of the Industry Association of Guangdong Province semiconductor light source, the reporter of “Economic Information Daily said that the standard problem is that the LED industry, the development of the biggest obstacles, especially the lack of a standardized and unified standardized optical components and lamps criteria.

 

Sui Sai Wing said that the country is gradually improving the led high bay lighting standards, but the current lack of status is not optimistic. “Lack of standards, and each company’s own existing equipment and facilities, the basis for the work and level of technology development is uneven, resulting in a wide range of LED lighting applications appeared on the led street light market, the performance of different poor interchangeability, which gives presented serious challenges to the industry as a whole, and also to some extent restricted the healthy development of semiconductor lighting industry, “said Sui Sai Wing.

Professional judges, Recommended products: solar led street lamp

Professional judges, Recommended products: solar led street lamp

At present, 100 “professional judges” professional selection for the finalists list of candidates by the end of April will announce the finalists results. Recommended list of professional judges, “Diao Xu nominate a bright spot Lighting Co., Ltd. solar led street lamp, in Guangzhou 36W LED Wall Washer, product competition of the 2012 Guangzhou International Lighting Exhibition (GILE).
Since its launch in August 2012 Guangzhou International Lighting Exhibition (GILE) Competition by many enterprises to actively respond to professional judges participating product inspected in depth within the enterprise, led high bay, the contest has entered the “professional assessment” phase, ” Online sea election “results have been publicized, a total of 855 products stand out; In addition, 100 professional judges enjoy the qualifications of the” New Products “, solar led street lamp, each judge to limit recommended a direct election by the sea, with online audition results into “was included in the list of candidates.”
At present, 100 “professional judges” professional selection for the finalists list of candidates by the end of April will announce the finalists results. Recommended list of professional judges, “Diao Xu nominate a bright spot Lighting Co., Ltd. in Guangzhou 36W LED Wall Washer, solar led street lamp, product competition of the 2012 Guangzhou International Lighting Exhibition (GILE).
Recommended reason:
A drive and light body with a separate design can effectively reduce the heat of the lamp body, and increased LED life.
Light body with high-speed thermal structure design, the lamp body on the back of a number of additional heat wire, solar led street lamp, both ends of the block cover air convection design, up to 30% or more cooling efficiency than conventional lamps.
Lighting design is refined, stylish, with impact, corrosion-resistant advantages.
4 bracket activities bracket, easy installation, fast, stable. 5 double waterproof lamps, moisture treatment, seal with imported silicone rubber, protection class is IP65.

Improved aging test for solar led street lamp

 

Improved aging test for solar led street lamp

 

Aging is an important guarantee of the reliability of electronic products, is a production of the last essential step. LED products can enhance the performance of aging and contribute to the late stage of the performance and stability. Solar led street lamp aging test in product quality control is a very important part, but often neglected in many cases, can not be correct and effective aging. Solar led street lamp aging test is based on the product failure rate curve of the bathtub curve characteristics and countermeasures taken, in order to improve the reliability of the product, but this method is not necessary, after all, the aging test at the expense of the life of a single LED products for the price.

 

Solar led street lamp aging, including the constant current aging and constant aging. The constant current source is the current constant at any time. Frequency problem, it is not constant current. It is AC or pulsating current. AC or pulse current source can be designed to be valid value is constant, but this power can not be called “constant current source. Constant current aging is most consistent with the operating characteristics of the LED current is the most scientific of the LED aging; overcurrent impact of aging is also factory using the latest means of an aging through the use of adjustable frequency, current adjustable constant current source such aging in a short period of time in order to judge the quality of the led high bay life expectancy, and can pick out a lot of conventional aging can not be singled out hidden LED.

Disintegration of the Soviet Union expansion solar led street lamp results of a nationalist?

This article originally contained “historian cafe” 11 Series, the original title “Russian scholars think about the collapse of the Soviet Union”

The Soviet Union’s disintegration has been more than 15 years. Around the cause of the occurrence of this major  solar led street lamp event in the  20th century, is still controversial. Here, I want to Review some of the views put forward by the Russian scholars ‘articles and speeches on this issue and make some analysis for readers’ reference.

Disintegration of the Soviet Union expansion solar led street lamp results of a nationalist?

Russian scholars led high bay believe that the collapse of the Soviet Union is the result of nationalist expansion. Nationalism here said, referring to the anti-Russian domination of the major ethnic republics advocate; in part also refers to the mood of ethnic minorities within the Russian Federation Republic of anti-Russia, for independence. I noticed that when it comes to the collapse of the Soviet Union, ethnic factors, some Russian scholars, rarely talked about the ethnic conflicts that large ethnic Russian and other ethnic contradictions and problems caused by the Russian doctrine. These scholars said that the collapse of the Soviet Union is the expansion of nationalism, “nationalism” is a derogatory term.Some people believe that these scholars is the nation’s intellectuals in the republics to incite nationalist sentiments; more scholars think it is the former republics of the ruling group, the vested interests of the privileged class of the republics. Related to this, frequently there is a noun – Этнономенклатура, rank hierarchy of means national or ethnic bureaucracy. In relation to this, some scholars even Lenin adhere to national solar led street lamp self-determination raised an objection to the (В.К. Volkov national officials class in the Soviet Union’s role “). This view is clearly the reasons for the collapse of the Soviet Union partly to blame other than the republics in the Soviet Union, Russian Federation.

This lack of convincing point of view is the reason. One of the reasons that the Soviet government and the CPSU Central Committee, long-term deny the contradiction between the objective existence of the Russian ethnic and minority advocacy of national problems in the Soviet Union has long been a satisfactory and thorough solution, solar led street lamp Greater Russia for decades, not The harmfulness been criticized. The institutional setup of the CPSU Central Committee, also abolished the department of the peoples concerned, and only retained the Institute of Ethnology in the Academy system.