What Is Exterior Flood Light Fixtures?

For the LED street lamp believe that everybody is not strange, but how much knowledge about the LED street lamp technology you know? Today let's fine count about the LED street lamp technology those dirty little secret. Introduction to the working voltage of LED street lamp power supply in general, for the working voltage of the LED is recommended in 3. 0 ~ 3. 5 v, after tests found, are generally in 3. 2 v, so we according to 3. 2 v to calculation is more accurate. （ The total n in series with the lamp bead voltage is 3. 2 * n) two Why the LED street lamp power constant current? Because the LED lighting material properties its destined to have been influenced by the environmental factors slants big, for example, in the high temperature, LED the current also increases; The increase of the voltage, the LED current also increases at the same time. If work is a long period of time to excess, will LED lamp bead greatly reduce the service life. And the LED constant current is in a series of external environment factors such as voltage and temperature change, make sure the LED work stable output current value. 3. LED street lamp precision constant current power supply on the market today with some precision of constant current is relatively inferior power, but also popular with some recommended constant current program error rate is as high as & plusmn; 8%, need to know we are general requirements & plusmn; 3% 3%, so only in accordance with the design scheme of the power of the production to reach & plusmn; when fine-tuning Error of 3%. Four. How much is the working current of the LED street light electric power supply is the most suitable we know LED the rated working current is 350 ma, and just some factory is not much better than the direct use of 350 ma design, but in fact work under 350 ma of fever situation is very serious, is not reasonable. Then after the experiment many times and found 320 ma design is the most appropriate, as much as possible to reduce fever, let more electricity into visible light. Five. LED street lamp power supply board series parallel with wide voltage more wide? The industry know usually if we work to the LED street lamp power supply voltage range in a relatively wide range AC85 - 265 v, so you need to LED lamp plate series parallel way of support. Generally we are not using wide voltage, which the AC220V and AC110V are to be classified, so to guarantee the reliability of the power supply. In the present as the power supply is generally isolation step-down type constant current power supply, so the requirement of voltage 110 v, 70 v, output voltage, no more serial number nor 23 string. Similarly when the input voltage of 220 v output voltage can be up to 156 v. In other words, the serial number cannot be 45 series. Number of parallel also cannot too much, otherwise will working current is too large, lead to excess power heating. Finally we have a wide voltage, APFC active power compensation is to use L6561 ( $0. 4083). The voltage is too high to 7527/400 v, and then step down, is equivalent to have the two switching power supply. （ This plan below can be used with special circumstances)

Sheikh Zayed桥( Sheikh zayed bridge) Located in the united Arab emirates Abu Dhabi ( ABU dhabi) , the 842 - metre - long bridge connection ABU dhabi island with the mainland, including concrete wave sequence curve up and down the water reaches the height of 64 meters. A four-lane highway across the two road on both sides of the cantilever deck structure. By under design. Road lighting is the functional lighting, purple lights adorn a bridge, and pavement white light to bring out the best in each other, pure and fresh and beautiful.






editor: gather

In December, a milestone in Montreal, Canada, 50000 streetlights were replaced by LED lights, this shift also includes the deployment of an intelligent lighting management system at the same time.




this is a five-year $82 million ( 65 million pounds, 5. 6. 5 billion yuan) Part of the project, the project aims to Montreal into an innovative city. It is understood that the ultimate goal of the street light project is 13. 20000 replace the LED street lamp illuminant, known as Canada's largest intelligent LED street lamp project so far.
a key element of this project is complete interoperability between various systems. Project engineer Isabelle Lessard said, this is the best way to get the unique and advanced platform, without having to rely on a single supplier of technical constraints.
the project manager and system integrator is Quebec enterprise & Eacute; nerge re。 DimOnOff, is a company specializing in lighting control system of Quebec, is selected to provide integration platform, management software, and 20% of nodes and gateways. In addition, 60% of GE's Current company provided before. Global leader in the field of Wireless Telematic Wireless is to provide the final 20% of nodes and gateways.
the city has asked intelligent lighting management system in the first phase of the project as soon as possible, this means that must be implemented at the same time the lamp replacement and necessary for the development of network infrastructure.
a month about 6000 high pressure sodium lamp is replaced with LED lights. The city estimates that the installation of LED lights will save 60% of the energy consumption and 55% of the cost of equipment maintenance.
it is worth mentioning that this new type of LED lights also received & other; The dark sky & throughout; Certification, thanks to their custom beam direction, means that greatly reduces the light pollution and disturbance to the animals sleep around.
because of the color and contrast enhancement, new urban lighting can improve the visibility of different road users, to improve safety. Near park and environment places of street light, the color temperature is set to 1800 k, the city, says it does not interfere with the circadian rhythm of animals.
in fact, last year, according to reports in Montreal, the city is street lamp light source change into LED to make a decision, due to people's health problems in the high temperature may bring some doubts, the municipal government has been considering sure use which color temperature of products.
in addition to environmental benefits, a new intelligent lighting system also provides the residents in cities and other benefits. For example, the intelligent lighting management system can real-time measuring energy consumption, according to the weather conditions, traffic conditions, or outdoor activities to adjust the light intensity, and can in the case of a street lamp damage or malfunction of rapid intervention.
in addition, the lamp will also and the smart city can make use of some of the future potential applications, such as snow and flood detection, combined pollution monitoring and waste management, etc. The biggest intelligent LED street lamp project launch will make Montreal the a & other; Smart city & throughout; 。

Perhaps we all know, the influencing factors of LED street light price with specifications, build quality, brand, the and so on, but we are not clear, however, the influence factors of LED street light price main show is in what place? LED chip is LED street light quotation,


maybe we know what factors affect the price of LED lights, including specifications, technology, brand, appearance, etc. However, we do not know the impact of these factors on the LED street light price mainly reflected in where. The LED chip is one of the factors influencing the LED street light quotation. First-class legion is Cree, OSL and Japan and Europe and the United States of Asia. Other companies, such as the prius, Toyota synthesis and Seoul semiconductor, also is pretty good. Taiwan wafer and the new century in the middle, and low chip prices at home. Of course, the brand is also one of the reasons affect the price of LED street light. A strong brand manufacturers price is relatively high. There is also the question of LED street light price influence factors driving. Drive circuit is constant voltage or constant current, if use constant current, using the kind of constant current circuit? Stability and reliability, etc. Because of some low-end led lamp is driven by low-cost light-emitting diode, so during the test, they flicker in months or even a few days. This is because the driving power supply due to poor quality. Of course, the inferior solar street lamps to a standard led lamp price is relatively low. For more information or product price, please call the service hotline.