2013年9月29日星期日

ledhighbaylight: The indicator and performance of Led street light

ledhighbaylight: The indicator and performance of Led street light: LED street light is the most important performance index is its photosynthetic efficiency as a whole. A whole photosynthetic efficiency...

The indicator and performance of Led street light

LED street light is the most important performance index is its photosynthetic efficiency as a whole. A whole photosynthetic efficiency is output flux (lumens) and the ratio of the input electric power, the unit is the number of lumens per watt lm/W.
It not only includes the luminous efficiency of the LED itself, also includes the constant current power supply efficiency and blister light transmittance. In addition, also its color temperature, color rendering index, etc.
In order to test the index of the LED dome light, we usually put it in the large integral ball, in order to measure all the luminous flux emitted from it. And analyze the spectrum emitted from it.
Now take the infrared remote control is shown in figure 7 LED to absorb dome light, for example, test its performance. This is a used 168 3014 the infrared remote control led to absorb dome light.
When not mask the measured results are as follows.
1. The whole light efficiency
The total number of lumens 1383 lm, the input ac power = 16.57 W, so the overall lighting = 83.46 lm/W to be sure which includes two efficiency, the efficiency of an infrared receiver, the other is a constant current power supply efficiency. And the efficiency of the constant current power supply, separate test results is 89.5% (figure 8). Infrared receiver power consumption is about 0.5 W, so the actual input power should be 16 W. If it’s not the infrared remote control, its overall photosynthetic efficiency should be 86.43 lm/W. If we consider the efficiency of power supply, with electric power on LED 14.32 W.
So it can get 96.5 lm/W. This should be the LED luminous efficiency of itself. If use the LED luminous efficiency is 120 lm/W, so its overall photosynthetic efficiency can reach 107 lm/W, power consumption, even with infrared receivers whole photosynthetic efficiency also can be more than 100 lm/W.
2. The color temperature
Color temperature: 6171 k, this is completely determined by the LED, if the user requires low color temperature, can convert low color temperature of LED.
3. The color rendering index
According to index: Ra = 76.2, the index is relatively low. But in reality currently used color rendering index is on 15 kinds of monochromatic light color rendering index of average results, it is not entirely represent its color. So the lighting information committee (CIE) is not recommended to determine the color of LED street light with CRI ability.
4. If combined with mask, its photosynthetic efficiency will, of course, decreases as a whole. And will reduce a lot. So choose high light transmittance of the mask is very important. But high light transmittance, will enable users to see the light bead, this is also don’t want to. Especially if use 1 w high power LED, is even more apparent, USES the small power leds used (e.g., 3014), allows for high light transmittance of mask, it is also very important.


More info you can visit:http://www.lighting-ledlight.com

ledhighbaylight: The difference between LED lamp and the traditiona...

ledhighbaylight: The difference between LED lamp and the traditiona...: Nowadays the life of the traditional light source performance measurement and evaluation have been standardized, and are interchangeable, ...

The difference between LED lamp and the traditional light source lamp

Nowadays the life of the traditional light source performance measurement and evaluation have been standardized, and are interchangeable, so that the life span of the traditional source of lamps and lanterns is by replacing the damaged light source, and according to the light in the life of 10 years design control devices to meet the requirements, so don’t usually evaluation of traditional light source of lamps and lanterns of the life. Life span of the LED lamps and lanterns and LED life itself, the LED driver and LED lamps and lanterns is provided to the environment, and many other factors, and the LED lights form is more, except with a standard lamp holder LED other LED lights are not interchangeable, to a variety of LED lamps and lanterns, so its life only through the life of the related evaluation to determine. In the evaluation of LED lamps and lanterns of life, not only to claim that optic (LX) to maintain life, also claims that the failure rate (FX).
Lamps and lanterns can take advantage of the luminous flux rate and traditional lamps and lanterns of different evaluation parameters. Traditional lighting lamps and lanterns USES to evaluate efficiency of lamps and lanterns, and LED street light USES photosynthetic efficiency evaluation.
The LED lamps and lanterns and the traditional light source lighting performance, evaluation and design there are many different places.
In the aspect of the performance evaluation of the LED lamps and lanterns
A) color space uniformity evaluation to evaluate the LED lamps and lanterns of observation Angle different color differences.
The characteristics of the traditional light source of a single light, LED lamps and lanterns of using LED lights is more light and light, LED lamps and lanterns of the light, and color difference between need to use the color space uniformity evaluation to evaluate the spatial distribution of LED lamps and lanterns of color.
B) unlike traditional lighting light source can be a photometric test alone, photometric measurement can be used when the relative method, LED light source is extremely sensitive to temperature, not suitable for the LED light from lamps and lanterns in isolated individual measurement, photometric absolute method should be adopted when the photometric test was carried out on the whole of lamps and lanterns.
In LED lamps and lanterns design
LED lamps and lanterns in the optical system design, electrical accessories, cooling measures and structure design aspects, such as compared with the traditional light source of lamps and lanterns has obviously don’t.
The optical system is the soul of the lamps and lanterns of lamps and lanterns, the purpose of which is according to the properties of the light source is selected to design a meet the requirements of the specific lighting lamps and lanterns of the optical system. Usually the traditional light source, the optical system by the light source of lamps and lanterns, lamp holder, reflector, and light cover. Due to some LED unit with two PI photometric characteristic of light, the optical system of lamps and lanterns is very different with the traditional light source lamp. Specific performance characteristics are as follows:
A) LED lamps and lanterns of the optical system generally consists of LED chips and lenses of LED units or LED array, sometimes arranged in array flat aluminum substrate, may under the protruding or concave molding substrate, lamps and lanterns use, or do not use the pervious to light cover. Can according to the requirements of lighting lamps, LED unit or multiple dozens of LED unit combination on the base board, attention should be paid to control the consistency of the combination unit of LED street light color after examination of the LED lamps and lanterns of the color space of evenness.
B) due to the LED photoelectric properties are very sensitive to the change of PN junction temperature; Encapsulating resin under high temperature and strong light irradiation can rapid degradation; Long-term radiation can make phosphor conversion rate of performance to reduce gradually, and will cause the color coordinates deviation. Evaluation of the life of the LED lamps and lanterns is usually under the condition of limited color offset, lumen maintenance ratio of assessment of LED lamps and lanterns.

Source from:http://www.lighting-ledlight.com

ledhighbaylight: Creating a new situation for the LED lighting indu...

ledhighbaylight: Creating a new situation for the LED lighting indu...: Looks new, cycle time. Everyone at this time, put forward his new goal and ideal. Have achievements over the past years, want to stay with ...

ledhighbaylight: Research Progress about prevention and control of ...

ledhighbaylight: Research Progress about prevention and control of ...: Agriculture is the foundation of the national economy, overall, in many areas of modern agriculture, such as pest control and so on all hav...

Creating a new situation for the LED lighting industry by using technology

Looks new, cycle time. Everyone at this time, put forward his new goal and ideal. Have achievements over the past years, want to stay with a judgment, a target of hope, longing for the future. Here, warmly holiday greetings to all lighting industry colleagues, to always care about and support our lighting organizations, enterprises, experts and friends express my heartfelt thanks!
The LED Street lighting industry in China is in the experience of reform and opening up 30 years, the most colorful, the most serious challenges at the same time period. During this period, the lighting industry’s energy come from? From the market or from policy? Is from marketing strategy from cut costs? We believe that all of these needs, but more important is the scientific and technological innovation. For the lighting industry, science and technology innovation is more important than any time. From incandescent bulbs to fluorescent lamp, to high intensity discharge lamps (HID), and is the development of LED lighting, lighting industry in China is the evolution history of the history of science and technology progress.
But unfortunately, in the history of science and technology in the traditional lighting, rare Chinese name. And in the emerging field of LED lighting applications, the world is to the Chinese the launching opportunity together with the international big company.
In the past year, the technical progress of traditional lighting: the device research and development and application of ceramic metal halide lamp show vitality, electrodeless lamp in-depth understanding and research, a batch of finished fluorescent lamp and energy-saving lamp manufacturing enterprise automation level of ascension. Especially xiamen chinese-government-owned developed the 60000 hours of fluorescent lamps and lighting show debut in the fall of Hong Kong, the industry attention.
In the past year, the ministry set up the China and application of semiconductor lighting/LED industry alliance, the LED government subsidy policy, and in seven strategic emerging industries; Countries announced out incandescent roadmap, recently released the best lighting power-saving technology practice case. A series of measures, make the LED shows very attractive prospects. However, you should see the LED lighting is still in the incubation periods. For functional LED lighting need to clarify the train of thought, strengthen the rational knowledge, less blindly follow. To project and investment in packaging technology route and source form, different power and application environment of research work, not conformity, be fool, or fool yourself.
Development of LED lighting industry, we must handle the relationship with the traditional lighting, that is to say, handle inheritance to development.
Coldly, keen to put in place by some places with no practice on the basis of the standard, is keen to design can show the government-funded projects, keen to recite those paradoxes about LED the so-called perfect, little imagine, even “chip is not equal to light, the light is not equal to lighting” this common sense all don’t understand, don’t go to study LED from the chip to the packaging technology route of the light source, thought with the current single star encapsulation, module type illuminant can fit all, or even think of alternatives to traditional electric light source in 3 to 5 years. Now LED development has nearly 10 years, the result is self-evident, the fact proved that some superficial impetuous and pseudoscience. LED lighting in some people’s eyes have become tools to collect money.
In recent years, governments at all levels, exotic, enterprises and individuals of many one hundred million yuan capital investment LED lighting, to now even LED lighting didn’t solve the fundamental problem the color of the light. So far, the vast majority of for the copy of the original technology, remain in the simulation on the appearance of traditional lighting. Is a breakthrough in LED bulb packaging form, commercial lighting is booming expenses furore.
Awake, see, the traditional light source with different luminous principle, created a small power, the power and the power source, solve the problem of the different environmental space lighting applications. LED lighting should be different application space, light source with different packaging ways; Different power of the light source, using different ways of heat dissipation. A kind of technical route can’t play lighting application package.
The upcoming 2013, will be the key to the development of functional LED lighting for a year, will be the first integrated power industry.
Traditional lighting is still strong, still is the mainstream of the profit of its inexpensive status is difficult to shake; The government subsidies is not who can share the big cake, the threshold of the technology and standards will gradually increase, many of the original technology for simple assembly LED Street lighting enterprises will become more difficult situation.
Chip integrated high-power light boom, will be the highlight of 2013 dazzling. Integrated high power light source and secondary light distribution, the development of functional LED lighting has become the most dominant direction. Integrated high power light source and application will become the mainstream of functional lighting, encapsulation, heat dissipation, new drivers, the system of the secondary light distribution technology has achieved astonishing breakthroughs, and there are more than three years nearly thousands of street lamp application practice case. At present, encapsulation and enterprise application integration high-power light source, with yixing hongli, zhongshan hong bao, shaanxi Tang Hua, ze in suzhou and zhejiang, core manufacturers. Lighting companies in China in the field of technology level, level has reached or exceed the international well-known company, has been one of the leading enterprises in the international.
Engaged in LED the application of functional lighting enterprise, to seriously study the change of the LED light source for lighting, such as according to needs to carry on the processing of the light; 2 detailed space; More closely the relationship between light source and application environment space; 3 light source control and information transmission.
In the New Year, we will continue to abide by the objective oriented principle, we must stick to the policy of help big action helps characteristic and thought industry services, services for the enterprise, the purpose of the service for the market, efforts to improve the level of coverage, and make new contributions to the development of lighting industry!

More info you can visit:http://www.lighting-ledlight.com

Research Progress about prevention and control of diseases and insect pests with artificial LED light

Agriculture is the foundation of the national economy, overall, in many areas of modern agriculture, such as pest control and so on all have extremely close relations with artificial lighting. In terms of prevention and control of agricultural pests, can be used in a specific wavelength of the LED street light source, to lure and kill pests, reduce pesticide seems to do safety green production.
In cultivation, with pest to uv light, blue light is of high sensibility, to seduce, use of lamps and lanterns of high voltage power grid will be destroyed, killed pest can make good fertilizer. Main product spectrum now used for pest trapping is as follows:
Uv intensity of illumination of the higher, and draw the better the results, so the actual agricultural use of trap in the outdoor lamp basically is given priority to with high output fluorescent lamp.
Insect visual and human vision is very different, he is ultraviolet perception. In agricultural field using the technology of artificial light elimination of insect pests have lured by using light (uv) insect pests and weeds, after studying the phototaxis of insects using ultraviolet development of insect is used fluorescent lamp, suitable for relatively airtight greenhouse, plant factory. In order to reduce the peach and citrus fruit by the moth and other pests, such as Japan in the 1960 s, popular throughout the country a Huang Guangfang moth lamps and lanterns. In 2000, and to find the most time to curb the wavelength of pest activity is 540 ~ 545 nm, so which has the function of efficient control the moth moth proof lights near ideal spectral distribution should be in the range. The latest generation of moth proof technology is to use green moth proof light, little adverse impact on the plant.
In addition, in terms of artificial light induced disease resistance, in recent years, there are some practical level of practical application with artificial light and the scene of the cultivation of disease resistance induced technology is published and put into application. Now, the actual use of prevention against technology is: low plant disease resistance induced by green light irradiation technology and using ultraviolet light (UV – B) also induced plant production technology of plant disease resistance to prevent disease.
Edible fungus, besides can adjust edible fungus growth and development, the LED street light source in terms of edible fungi factory production pest control also has application prospect. Experiments show that the green, white, yellow insecticidal lamp of pests to trap effect of total is much higher than the blue and pink insecticidal lamp. Among them, green for a number of important pests showed good trapping effect.
In conclusion, based on the state of insect life, habits, plant physiological characteristics to identify the light wavelength and the action of insects, plant physiology change rule, find out relevance is very important. Artificial light prevention and control of plant diseases and insect pests can purify the environment, protect the ecological system. The future use of the new light source, new pest control technology is also worth looking forward to.

More info you can visit:http://www.lighting-ledlight.com

2013年9月28日星期六

ledhighbaylight: The lighting feeling in factory after reconstructi...

ledhighbaylight: The lighting feeling in factory after reconstructi...: Is the 2013 session of the CPPCC, low-carbon economy, energy conservation and emissions reduction, inhibition of energy-intensive industri...

The lighting feeling in factory after reconstructing with LED lighting

Is the 2013 session of the CPPCC, low-carbon economy, energy conservation and emissions reduction, inhibition of energy-intensive industries has become a hot spot in the two sessions on behalf of, we can see that in many representatives proposal, are all pointing in the direction of "low carbon economy". "11th five-year plan" and "twelfth five-year" energy saving goal formulation is proposed the quantitative index for low carbon economy development, is an important try of China towards a low carbon economy. "Energy conservation and emission reduction" has become a national policy, a kind of legal responsibility, the target of a society as a whole.
All over China and the corresponding some laws or subsidies, in front of the factory led lighting energy saving renovation, the government also plays a leading role, in roads, office buildings are installed in areas such as energy saving, environmental protection of led lights.
Under the government response to promote energy saving and emission reduction, especially in dongguan show males, reporter walked into the male printing, the factory director said: as a printing enterprise, the production workshop of light identification requirements are very high. In a special box before our workshop, the effect of this light closer to the sun, for the color identification in the process of production. After the factory LED street lighting energy saving renovation, do not need special color differentiation lights, all with the same lamps and lanterns.
The factory director said factory LED lighting energy-saving renovation, began in April 2012. At that time, the company top decision, to take advantage of our company at the time of all 12000 28 w lamp electronic energy-saving lamps to replace into the LED lighting. On the LED lighting lamps and lanterns on market research, the company organized the bidding work, and in July, completed the bidding work, selected a dongguan local brands of LED lighting products.
After lighting effect how? Bright production workshop, do not need special color differentiation lamp also can undertake high-precision color printing, this itself is the best lighting effect. According to introducing, compared to the original electronic energy-saving lamps, is 2.5 times the lighting intensity of your new LED lights, and there is no stroboscopic, color temperature, the stability of light source close to the sun, bright and gentle, do not hurt the eyes. "12000 lamp used now, only a bad light, manufacturer to help us change it soon." The director said, according to the agreement with manufacturer, the service life of the lamps and lanterns is about 6 years, three years before if there is a problem, manufacturer can repair and replacement for free, "from the current use, is far less than one over ten thousand of the failure rate." In addition to the lighting effect, energy saving effect is also the most attention. The factory director to reporters also calculate a bill. "Of the original bulb is 28, now about 15 watt led lamp. After calculation, we can save about 800000 KWH per year, save electricity, 600000 yuan. And the life of the integrated light, maintenance costs, spent 1.56 million yuan, is expected to withdraw less than two years." Not only that, the company also applied to the municipal government of LED street lighting application subsidies, expected can get subsidies of 500000 yuan or so. This for the company, is a good thing, fully staffed so that more and more companies have factories LED lighting energy saving renovation, set off a round of energy-saving reform of the enterprise LED lighting factory.

More info you can visit:http://www.lead-lighting.com/products/bid31-1.htm

ledhighbaylight: The LED lighting design gap between China and Euro...

ledhighbaylight: The LED lighting design gap between China and Euro...: The lights along the way, with the development of human history has become the world an indispensable part of life and business applicatio...

The LED lighting design gap between China and Europe

The lights along the way, with the development of human history has become the world an indispensable part of life and business applications. Both ancient torches, bonfires, and the feudal society all kinds of lanterns, all kinds of ceramic and metal lamps and lanterns, even to the modern incandescent lamps, energy-saving lamps, led lighting now, every time the light, is an important symbol of social productivity development, is the crystallization of human art and technology, but also an important component of human culture. In the information age, the understanding of the LED street lighting configuration, run out, the deduction of the technology of lamps and lanterns, lighting, already was a country prosperous or not one of the important technical indicators.
Throughout the development level of lighting design for more than 20 years in our country, compared with Europe and the United States, Japan and other developed countries, the development process is relatively slow. But because of the Olympic Games, Asian games, etc. The successful hosting of the expo, as well as the rapid development of China's real estate industry and urbanization, China's overall level of lighting design industry have improved significantly. In the process of this development, our lighting designers with international lighting design in developed countries as reference point, learning and practice application, gradually close the gap, with globalization and keep pace with The Times of thinking make Chinese people to enjoy light in a new era of life, feel the infinite charm of lighting technology.
The author had taken nearly 40 countries for more than a decade, involved in the design and application of many international architectural lighting industry summit and BBS activities, to the international advanced concepts and applications of lighting design industry experience more feelings and comprehension, plus th industry has an in-depth study and practice, learn in lighting design industry, both at home and abroad the gap is more obvious, embodies in the following three aspects:
Professional talent gap of lighting design at home and abroad
The development of an industry, needs to have a special man to do research, will be able to do better. At present, China's lighting industry is lack of professional designers groups, more than 80% of the lighting designers from electrical engineering related to lighting or researchers turned to interior design. Domestic professional lighting design training lectures, few and far between.
Lighting designers lack of professional knowledge of lighting, the concept of lighting products and light environment design is still superficial. Most understanding of lighting design, lighting designers, all by self-study through trial and error and the practice to complete the lighting design. Even engaged in lighting design professional designers, more than half only focuses on the technical level, application level rather than design.
The United States since the 1950 s, the lighting design gradually separated from architecture, interior design, and other industries, the formation of a single industry, by special institutions to cultivate professional practitioners, talent reserves sufficient, even absorb the global elite designer team. Professional lighting designers is in the service of the owners, in the service of interior designer, they consider is to have what effect, should use what class of the lamp, to use what the characteristics of the light, to the pursuit of environment, people, aesthetic feeling and the perfect combination of lamplight, which ensures that constantly improve the level of lighting design.
The professional force difference of the lighting designer
In Europe and the United States and other countries, lighting designers is an independent and professional by legislation. To the brand for the general lighting institutions to operate. Individuals to the development of expert, usually "do one thing, for a lifetime!"
A lighting designer must not only know the lighting design, but also for his responsible for design and supervision space lighting environment. If a company's staff is the lights (or on a computer screen reflection) damage to the eyes, he can pass legislation department complaint owner, the owner can be a civil lawsuit against the lighting designer.
China lighting designers mostly mid-career, "river lake field" model, level of education, generally do not have a high level of specialization and make systematic scheme and model is weak, so far no a lighting design professional college, nor professional organizations, and is only attached to the building design. So their design more belong to grope and practice for a long time, will design skills proficiency as the concept of lighting design and creativity.
At home, lack of complete industry chain, the industry as a whole lighting design is soldier more, ability is uneven. Therefore, domestic lighting design industry for team, specialization, standardization and internationalization direction development still has a long way to go.
Lighting design in the domestic and overseas market segment of the gap
From the perspective of market segmentation, European and American developed countries lighting design application in the market segment is characterized by: in various fields to distinguish, within each niche for fixed-point directional LED street lighting, high intensity lighting, pure color and color temperature adjustment, dimming control, reliability, etc all have clear positioning design, technical level is higher, more comprehensive technology, operation specification. Japan mineko iwasaki lighting, for example, the specialized is engaged in the lighting segment in the field of underwater lighting, has more than 50 years in this field.
And the Chinese mainland market for the application of lighting design features are: the price first, by feel, by experience, by relations, just work, in order to select the desired lighting lamps and lanterns; Then refer to some regulations of lighting design, intensity of illumination, color temperature, color rendering, etc.), finally formed a set of lighting effect. Whether it is day or night, whether indoor or outdoor, lighting effects are mostly machine-made.
Generally speaking, from the observation, the author of the Chinese and foreign lighting industry in mainland China market of the lighting design is not strictly a lighting design, but the lamps and lanterns of purchasing or lamp driver. Design modelling and design applications, more than half of the lighting design are not based on the actual application effect for light distribution, lighting, creativity is relatively inadequate.
2000 north American lighting engineering society IESNA "north American lighting handbook ninth edition, published by the editor MarkSRea is there's a phrase in the preamble of the manual:" over the past two decades, in the practice of the lighting, from engineering to the lighting design, lighting from the intensity of illumination computation to aesthetic evaluation, from quantity to quality."
The development trend of China's lighting design to follow the same rule. We see that China's lighting design has a long way to go. On this road, you must need the government, institutions, industry associations, the media, lighting and lighting designer of China's vast power jointly promote the ability to go on, believe in the context of a new era of international cooperation is increasingly close, in the change of information sharing, China lighting design industry decide to continuously explore, research and practice of getting rich experience of wealth, and be able to blaze a trail in accordance with the situation of China, has a unique Oriental charm of the bright road!

More info you can visit:http://www.lighting-ledlight.com

ledhighbaylight: Analyzing the methods for LED street lighting driv...

ledhighbaylight: Analyzing the methods for LED street lighting driv...: The isolation circuit is simple, don’t need transformer. MP4000 is also the only one to do the soft switch IC. What is a soft switch? As we...

Analyzing the methods for LED street lighting driver puzzle

The isolation circuit is simple, don’t need transformer. MP4000 is also the only one to do the soft switch IC. What is a soft switch? As we all know a power effectiveness depends on loss. Soft switch control of the led driver IC provide efficient solution and do the dimming. First take a look at the MP4000, 1 to 30 w the isolation of the LED street lighting driver. The isolation circuit is simple, don’t need transformer. MP4000 is also the only one to do the soft switch IC.
What is a soft switch? As we all know a power effectiveness depends on loss. Consumption is? Two aspects, one is the conduction losses, the second is switching power supply switch loss, including loss. It has something to do with what? Related to frequency. The general integral switching loss is current and voltage. Traditionally, it is a hard switching and switching loss is relatively large. Because of the voltage and current to go up and cross section. This is a soft switch IC, is how to achieve? As we all know the critical conduction mode, through the electric side, critical import will find voltage mutation, so the detected current flow back, this is the zero current opening mode. Zero current can bring efficiency, such as achieve 90% efficiency compared with competitors, can save the switch losses and conduction losses.
Analytical method for LED lighting driver problems
Other diode part, if it’s CCM hard switching, will need to quickly reverse recovery, but MP4000 this model doesn’t need. Japan’s voltage is 100 vac. MP4005 is simple. One is 190 v, 220 v, the impedance is 4.85 Ω. Control mode is also soft switch technology, so to be able to provide very good efficiency, peripheral device is very simple. This is for the United States and Japan market of isolation. AC – DC resistance loss is bigger. MP4001 SmartLDO direct power supply to the IC. Only within the range of 15 to 30 v voltage can charge, other is blocking, charging time is very short. So SmartLDO can provide loss is very small. If you do the 3 w, 5 w with MP4001 can provide very high efficiency. Do not need PFC unfenced, especially for low power applications. But when a development of more than 8 w power LED street lighting drive, will need to provide the PFC.
MP4020/4021 series is a SingleStagePFC isolation scheme. Comparison with the traditional, can save a lot of cost, and high value of PFC, and it is also a critical conduction mode, conduction loss will be small. That move light tone down and start the bad how to solve if the conduction Angle is cut off a lot of time, start is often a problem, for IC, because of low voltage, light adjustable won’t go down, or there will be flashing. MP4030 provides a good solution.

More info you can visit:http://www.lighting-ledlight.com/

ledhighbaylight: Analysing the cause for the quality and safety pro...

ledhighbaylight: Analysing the cause for the quality and safety pro...: According to the EU non-food consumer products Rapid Alert System (RAPEX) statistics show that in 2012 Chinese-made light string up to ...

Analysing the cause for the quality and safety problems of LED lighting

According to the EU non-food consumer products Rapid Alert System (RAPEX) statistics show that in 2012 Chinese-made light string up to 43 cases have been reported since, and this year 1-8 months, the number of products have been notified has reached 39, involving communications up to 12 EU countries. United States and Canada and other countries are also times to LED street lights on the grounds of security risks of our products published.
Quality and safety problems caused by light strings of the following three main reasons:
1 due to the low quality of industry access threshold increased risk. Europe and other Western countries in great demand for holiday string lights, string lights and in the course of normal use of consumers easily accessible in the event of an accident caused great harm. And some manufacturers technical strength is weak, the lack of perfect quality control system, the various standards abroad is very limited capacity to respond may result in the product design requirements and the deviation of the actual application conditions, once the product has not been necessary to pre-export inspection, it there is a big quality problems.
2 design flaws become high quality string lights the main causes. From informed analysis, string lights, the main quality issues, including the risk of electric shock, fire and burn risk and structural defects. Where a safe distance and poor insulation become a major quality problems, can easily lead to electric shock, which also shows the internal structure of these products there is a serious flaw in the design aspects already planted quality problems.
3 health, environmental projects become a new risk points. RoHS Directive since 2005 since the implementation of restricted substances has been increasing, the scope has been expanded council substances, various stringent conditions continue to be written into the new directive. Meanwhile, the EU member states must be required at January 2, 2013 will RoHS2.0 update to the local laws. Section 34 of the year in RAPEX notifications, an LED street lights exports to Germany because of excessive levels of lead in solder lead consignment was refused entry at ports.

 More info you can visit:http://www.lighting-ledlight.com/

2013年9月27日星期五

ledhighbaylight: led street lights made in China

ledhighbaylight: led street lights made in China: Why choose our LED Street light ? 1.high heat conducting efficiency, low lumens depreciation, high light purity, and no double imag...

led street lights made in China


Why choose our LED Street light

1.high heat conducting efficiency, low lumens depreciation, high light purity, and no double image
2.IP65 standard, free from water, dust and corrosion
3.Breadth working voltage, and constant flow and pressure
4.Environmental protection, no pollution of lead and Hg
5.The decorative effect is wonderful,surface adopted special process.

The Specifications of LED Street light 100W:
Power (W) :                 100 watt
Dimension:                  700*346*120mm 
Inpute voltage(V):         85~265V AC 
Ra (CRI) :                    ≥75 
Color temp.(CCT):        2800-7500K 
Power factor  :             ≥0.95
Power factor  :             ≥0.95 
Frequency (Hz) :          47 to 63Hz 
Light decay:                <3% within 3000Hrs 
Lifespan(Hrs) :             ≥35,000H 
Humidity range:           5 to 95% R.H. 





Work temp.                -20~+55℃ 
Store temp.:               -40~+85℃
Ip grade:                  IP65
Warranty:                   3 years
Certification:               CE  FCC  RoHS
 

More info you can visit:http://www.lead-lighting.com/products/bid31-1.htm

ledhighbaylight: led street light made in China

ledhighbaylight: led street light made in China: Why choose our led street light ? 1.high heat conducting efficiency, low lumens depreciation, high light purity, and no double imag...

led street light made in China


Why choose our led street light

1.high heat conducting efficiency, low lumens depreciation, high light purity, and no double image
2.IP65 standard, free from water, dust and corrosion
3.Breadth working voltage, and constant flow and pressure
4.Environmental protection, no pollution of lead and Hg
5.The decorative effect is wonderful,surface adopted special process.

The Specifications of LED Street light 160W:
Power (W) :                 160 watt
Dimension:                  700*346*120mm 
Inpute voltage(V):         85~265V AC 
Ra (CRI) :                    ≥75 
Color temp.(CCT):        2800-7500K 
Power factor  :             ≥0.95
Power factor  :             ≥0.95 
Frequency (Hz) :          47 to 63Hz 
Light decay:                <3% within 3000Hrs 
Lifespan(Hrs) :             ≥35,000H 
Humidity range:           5 to 95% R.H. 





Work temp.                -20~+55℃ 
Store temp.:               -40~+85℃
Ip grade:                  IP65
Warranty:                   3 years
Certification:               CE  FCC  RoHS


More info  you can visit:http://www.lead-lighting.com/products/bid31-1.htm

ledhighbaylight: led street lighting made in China

ledhighbaylight: led street lighting made in China: The Specifications of LED Street light 200W: Power (W) :                 200 watt Dimension:                  700*346*120mm   ...

led street lighting made in China


The Specifications of LED Street light 200W:
Power (W) :                 200 watt
Dimension:                  700*346*120mm 
Inpute voltage(V):         85~265V AC 
Ra (CRI) :                    ≥75 
Color temp.(CCT):        2800-7500K 
Power factor  :             ≥0.95
Power factor  :             ≥0.95 
Frequency (Hz) :          47 to 63Hz 
Light decay:                <3% within 3000Hrs 
Lifespan(Hrs) :             ≥35,000H 
Humidity range:           5 to 95% R.H. 





Work temp.                -20~+55℃ 
Store temp.:               -40~+85℃
Ip grade:                  IP65
Warranty:                   3 years
Certification:               CE  FCC  RoHS


More info you can visit:http://www.lead-lighting.com/products/bid31-1.htm

led street lights made in China

led street lights made in China

led street lighting made in China

led street lighting made in China

led street lights made in China

led street lights made in China

led street lights made in China

led street lights made in China

led street lighting made in China

led street lighting made in China

led street light made in China

2013年9月25日星期三

ledhighbaylight: The Specifications of LED Street light 100W made i...

ledhighbaylight: The Specifications of LED Street light 100W made i...: The Specifications of LED Street light 100W: Power (W) :                 100 watt Dimension:                  700*346*120mm   I...

The Specifications of LED Street light 100W made in China


The Specifications of LED Street light 100W:
Power (W) :                 100 watt
Dimension:                  700*346*120mm 
Inpute voltage(V):         85~265V AC 
Ra (CRI) :                    ≥75 
Color temp.(CCT):        2800-7500K 
Power factor  :             ≥0.95
Power factor  :             ≥0.95 
Frequency (Hz) :          47 to 63Hz 
Light decay:                <3% within 3000Hrs 
Lifespan(Hrs) :             ≥35,000H 
Humidity range:           5 to 95% R.H. 
Work temp.                -20~+55℃ 
Store temp.:               -40~+85℃
Ip grade:                  IP65
Warranty:                   3 years
Certification:               CE  FCC  RoHS


The Specifications of LED Street light 160W



The Specifications of LED Street light 160W:
Power (W) :                 160 watt
Dimension:                  700*346*120mm 
Inpute voltage(V):         85~265V AC 
Ra (CRI) :                    ≥75 
Color temp.(CCT):        2800-7500K 
Power factor  :             ≥0.95
Power factor  :             ≥0.95 
Frequency (Hz) :          47 to 63Hz 
Light decay:                <3% within 3000Hrs 
Lifespan(Hrs) :             ≥35,000H 
Humidity range:           5 to 95% R.H. 
Work temp.                -20~+55℃ 
Store temp.:               -40~+85℃
Ip grade:                  IP65
Warranty:                   3 years
Certification:               CE  FCC  RoHS


ledhighbaylight: The Specifications of LED Street light 200W made i...

ledhighbaylight: The Specifications of LED Street light 200W made i...: The Specifications of LED Street light 200W: Power (W) :                 200 watt Dimension:                  700*346*120mm   ...

The Specifications of LED Street light 200W made in China



The Specifications of LED Street light 200W:
Power (W) :                 200 watt
Dimension:                  700*346*120mm 
Inpute voltage(V):         85~265V AC 
Ra (CRI) :                    ≥75 
Color temp.(CCT):        2800-7500K 
Power factor  :             ≥0.95
Power factor  :             ≥0.95 
Frequency (Hz) :          47 to 63Hz 
Light decay:                <3% within 3000Hrs 
Lifespan(Hrs) :             ≥35,000H 
Humidity range:           5 to 95% R.H. 
Work temp.                -20~+55℃ 
Store temp.:               -40~+85℃
Ip grade:                  IP65
Warranty:                   3 years
Certification:               CE  FCC  RoHS

ledhighbaylight: The nine factors for the large gap of the price be...

ledhighbaylight: The nine factors for the large gap of the price be...: The ceaseless development of lighting industry, LED lamps and lanterns and traditional lamps and lanterns of competition. The  LED street li...

The nine factors for the large gap of the price between the different LED lights

The ceaseless development of lighting industry, LED lamps and lanterns and traditional lamps and lanterns of competition. The LED street lights are acted the role of a large number of manufacturers, different vendors use different quality of LED is the important cause of LED lamps and lanterns is different. Because of the price competition is increasingly fierce, appearance, structure, function almost the same products, price difference is 2 to 3 times, many users get faint head, I don’t know spreads to come from, is generally not in the production of LED tube LED lighting plants are difficult to separate, and consumers.
So, choose oneself have good LED production source, or a perfect LED testing equipment would be a good LED lighting factory, bought the LED lighting products will be more secure. Let’s see what are the factors of the LED lamps and lanterns price difference:
1, brightness
LED brightness is different, the price is different.
2, antistatic ability
Antistatic ability of LED, long life and therefore price is high. Antistatic usually greater than 700 v LED can be used in the LED lighting.
3, wavelength,
LED, wavelength consistent? Color is consistent, such as required? Color is consistent, the price is high. Not the manufacturer of the LED light color separation instrument is not easy to produce pure color products.
4, the leakage current
LED is a one-way conductive lights, if there is a reverse current, is called the leakage, leakage current big LED, short service life, low price.
5, light Angle
Use different LED light Angle is different. Special light Angle, the price is higher. Such as the diffuse Angle, the price is higher.
6, different life
Quality is the key to life, life is decided by droop. Droop small, long service life, long life, high price.
7, the LED chip
LED lights for chip, different chips, the price difference is very big. Japan, the United States of the chip is more expensive, factory with local manufacturers of the LED chip price is lower than the day, the United States.
8, and the size of the chip,
The size of the chip to side, said big LED chip quality is better than that of the small chip. The price is proportional with the chip size.
9, colloid
Ordinary LED colloid generally for epoxy resin, leds with uv radiation and fire retardant added more expensive, high quality outdoor LED street lights should be uv and fire prevention.
LED lighting market is part of the illegal ACTS, cheat supplier, diddle supplier material production of finished products, sold at abnormally low finished product for cash. There are a few LED lighting manufacturers to unrealistic promises on dealers and users, and then use changing, head of the firm or tricks to shirk responsibility, therefore, when consumer is buying must pay attention to these details.

Source from:http://www.lighting-ledlight.com