led street light bulb technology development status and difficulties

1、The LED street lamps light has small decline, the decline in one year is less than 3%, even it used for 10 year, it is still can not reach the road illumination requirements. Therefore, LED lights when using the power of design can be lower than the high pressure sodium.

2、led street light bulb can be automatically dimming, and can achieve in meeting the different times of lighting requirements, the maximum possible reduction in power to save energy.

3、LED is a low-voltage DC devices. The single drive LED voltage is a safe voltage, so it is safer than the use of high voltage power supply, especially in a public place. DC characteristics of the LEDs are particularly suitable for combination with solar energy.

4、Each unit of LED die is only a small volume, so the device can be fabricated into various shapes, and it is suitable for variable shock environments.

5、long life: the theoretical life expectancy is more than 50,000 hours.

6、the LED can be frequently switch without worrying about its damage.

7、easy installation: directly to the led street light bulb poles to replace the original sodium lamp.

8、excellent thermal control: it can make LED junction temperature drops below 70 ° C . Withe the development of technology, the junction temperature still go further decline. In theory, the chips life will be longer.

9、the quality is reliable: the circuit power supply used in all high-quality components. Each LED has a separate over current protection and a string parallel protection, even if one is damaged, it will not lead to other LED chip failure.

10、LED light source does not contain toxic metals mercury, unlike the high pressure sodium or metal halide lamps which contain environmental harm.

However, recently, having heard the views of many experts and scholars, they think that the technology is not mature to replace high pressure sodium lamps. The main reasons are listed below:

1. LED luminous efficiency can not be compared to high pressure sodium.

2. The exposure of led street light bulb is too centered, so it has poor uniformity.

3. LED street lamps light has a serious decline, so life is not long.

4. LED street light weight is too heavy, so it is not easy to install.

5. High cost of LED street lights, so it is difficult to be universal.

 

No led street light bulb, the driver is unable to figure out the direction

“An Longquan near the road for five months, no street lights, often taken the wrong roadcar from this passing.” 30, Mr. Jiang of Changchun, led street light bulb, the public reflects this road leadingto the direction of Harbin, Jilin, elm and Dehuino street lights to lead the night drivers isdifficult to identify the direction.

No led street light bulb, the driver is unable to figure out the direction

According to Mr. Jiang introduction, from Anlong Quan to Xinglong Mountain about 10 km, this road refurbishment in May 2010 to October, after completing smooth pavement smoothness, led street light bulb, “the newly built road which is no street lights convenient, Han less thancarts lights flash is valid and could not see. “Mr. Jiang said that this road is one out of the city must pass through the roads, no street lights, led street light bulb coupled with signs of out of the cityis not installed in place night drivers is not good sense of direction. Mr. Jiang said he often drove to and from the road led street light bulb, although very familiar with the roads, but occasionallystill in the wrong direction, the other no street lights and LED high bay caused great inconvenience to nearby residents at night travel.

“At first I heard that you want to install street lights, and do not know why so long nosafety.” Mr. Jiang said. Reporter contacted a street management staff, the staff will contact the relevant departments to identify and timely processing.

The construction of led street light bulb

Walk in the commute to see many places in the road construction that has been secretlylight street lamps shining the pedestrian road is always falling to pieces, pedestriansalways have to walk carefully, led street light bulb, as if accidentallyhurt. Life will inevitably encounternumerous road is the road there is always bad, bad can repair it. But people? Peopleinevitably there will be bad, can be how to fix it, only some of the water (cement) mayXiude Hao Well? ? ?

The day before yesterday in Beijing to see a car behind the written phrase ‘my life on the road, always in the construction. . . ‘Slow way of life, led street light bulb, how to select, how to pay, how to harvest, everyone’s life are thinking, some candidates on the go life swagger, some people the wrong fork in others a lifetime exploring. spent in the experiment, fliesmediocrity. Life there will be inevitably choose the wrong time, led street light bulb, wrong can be changed,nothing more than more than others to go 180 kilometers Well, just do not repeat the mistakes again, each time through experience may not help us much of a busy but it at least let us once again to see the people, who let every choice we are as willing to do?The construction of led street light bulb
I’ve always had a wish, a kiosk can be open, sit down at the little kiosks, and sipped a glass of water, watching the way of pedestrians every day, to see friendly faces in thissociety, to tell the world Faithfulness good and evil. Music again sounded the first Jackie Chan “Do not think he did not, had to listen to this song for that long lost passion, led street light bulb and LED high bay, promise his promise, his whole life, several times people think highly of think highly ofwould fight it. Just that no street lights on the road, the golf is very hard, and tired. . . . . .

LED street light bulbS illuminate the Weifang North Sea Road railway bridge

LED street light bulbS illuminate the Weifang North Sea Road railway bridge

Two construction workers are busy connecting the light of lights, while the next threeconstruction workers in the series power cord … This is April 11 at 3 pm, the reporter tosee the scene in the city North Sea Road railway bridge. It is understood that the North Sea Road Since the opening of the railway bridge has been no LED street light such as led street light bulb, a lot of inconvenience to pedestrians. Currently, the City Council and Street Lights Office isinstalled on North Sea Road railway bridge street lights, to invest 1.78 million yuan. Next, LED high bay the Youth Road, spring kite Road, long loose Lu, Aiguo Road railway bridge will be to install street lighting.
Andon, must be of the bridge under the bridge
April 11 at 3 pm, reporters saw in the road east of the north of the Beihai Road railway bridge, a 24 m high circular pole lamp lying on the roadside, led street light bulb a dozen construction workers are connecting lighting light source, the middle two construction workers were busy cascading power cord. City Council and Street Lights Office Director Cao Jin Gesaid, since the morning, they arranged for the construction workers enter the construction site, ready in the North Sea Road, north of the railway bridge on both sides of the green belt, four 24 m spherical pole lamp, has installed two.
April 12, construction workers will be in the North Sea Road railway bridge culvertinstalled 16 tunnels lamps, functional lighting, then install the 20 3.8-meter-highlandscape lights landscape lighting is expected to invest 1.78 million yuan.
North Road railway bridge, culvert finally install street lights, after passing the railway bridge culvert no longer dark night. “Miss Lu, who lives in Dragon and Phoenix GardenFangzi New Area, happily told reporters. The North Sea Road has been open to trafficfor many years, while the railway bridge letter hole has no street lights, led street light bulb the vehicle has a lot of inconvenience to the pedestrian, who lives in the the Fangzi New Area, Europe and the United States home of Mr. Yue said. In the afternoon, when Mr. Yue passing throughthe North Sea Road railway bridge, the North Sea Road railway bridge construction workers are installing street lights, Mr. Yue said happily, really good, led street light bulb did not have to worry about the safety issues of driving at night.

Zhuhai Avenues are using whole sections of LED street light bulb

Zhuhai Avenues are using whole sections of LED street light bulbThe end of last year, the opening of the Zhuhai Avenue, a project, the road of the city of Zhuhai City, the first full section of the LED energy saving lamps, the tracking and detection of the Zhuhai traffic in recent shows, these LED street lamp energy saving effect is obvious, led street light bulb, compared to the old street lamp energy consumption decreased by 70% and more per lamp per year can save electricity equivalent to 0.48 tons of coal. In accordance with the relevant requirements of the provinces and cities, the city new construction, led high bay alterations must be in the street light project using LED lamps, the end of the year for the completion of the 30,000 street reconstruction, Zhuhai Avenue street reconstruction has made a successful attempt.

Zhuhai Avenue main road and a project on both sides of the road were installed 850 LED energy-saving lamps, the recent Zhuhai Transportation Group staff through professional instruments at night, led street light bulb, the detection of main road lighting and energy saving.The test results of the analysis show that the main road street lights in the illumination uniformity to meet the design requirements. Traffic Group, told reporters before the Chief Engineer, Room Lei Sheng, compared to Zhuhai Avenue, before the transformation of the high pressure sodium lamps, LED lamps in the lighting has a great advantage. “Only 196 watts of LED lights, the brightness is equivalent to the old street lamps ‘400 watt ‘of sodium; high pressure sodium maximum life span of only 10,000 hours to the daily lighting 12 hours count, led street light bulb, use of time for only two years, LED lights can 5-year warranty; and high pressure sodium lighting capacity decay for more than 20 percent a year, basically half, two years after the street lights will be very very dim LED light attenuation by less than 8% annually. power by reserving the power or an annual increase pointcurrent and other methods, the basic five years to ensure the street lamp brightness constant.

How to improve the color rendering for LED street light bulb

 

How to improve the color rendering for LED street light bulb

 

As LED technology continues to evolve, so that made ​​possible the LED as a light source, light source in lighting, color rendering index CRI has very strict requirements, the current white LED color is not very mature, making it the constraints LED as the lighting of the main obstacles.

 

White composite light, through the prism it is easy to break down the white light contains all colors of light. The LED street light bulb is a more comprehensive chromatography light laid a theoretical foundation, the characteristics of such a wide color gamut LED lighting products, high color rendering.

 

Light is a wave-particle two-phase material, a substance that contains the wave characteristics include the characteristics of the particles, so that it has a strong composite characteristics, so in terms of the nature of light and LED street light bulb characteristics, LEDs are becoming high-quality lighting possibility.

 

Current white led high bay technology, used mainly blue chips recoating phosphor production process, the technology developed by Nichia, fluorescent tubes emitting principle followed from a sense, this technology due to the red and green components missing, so that congenital defects on the color rendering index, the current to compensate for this defect, the main direction of the phosphor technology within the industry.

 

The blue chip coated with phosphor to the manufacture of white light technology, this technique can in principle produce better white, but weaker ability to adapt to the environment during use, resulting in a theoretical and practical differences, such the differences are largely generated by the LED heat accumulated temperature impact on the phosphor.

How to select a suitable LED street light bulb

 

How to select a suitable LED street light bulb

 

For local lighting, not only need to compare the luminous flux and power, more needs to focus on measuring the light distribution characteristics. The use of the Bonneville Power headquarters hall projection lamp, compared to the PAR38 halogen lamps, fluorescent lamps greatly reduces the power loss, but not meeting the target light distribution effect. LED street light bulb is very good solution to this problem, because of its small light divergence angle, making the art lighting effects than the surrounding wall is much better. Considering the selection of lamps, such as launch angle and center emission optical density and other factors, should be luminous flux and power together as examine the indicators.

 

LED replacement lamps for efficient lighting (CFL) phase, may not really reflect its value faster lamps, but this is not a replacement key. The economic rate of return is only partially depends on the difference between the current system and replacement system power. Although fluorescent energy saving, but the LED street light bulb needs more time to reflect its economic value. CFL can not focus light in the art, it is not suitable for this application.

 

Compared to fluorescent lamps, LED lights can improve the color quality and power efficiency. Purchase products, check the technical specifications of the led high bay products (such as CCT, CRI, etc.) to ensure that the product is suitable for the application of the basic requirements. However, the color index is sometimes the human eye to see the same information and can not effectively convey the quality of color illuminate. Hence the need for an entity model to the specific analysis and evaluation.

Good bye, traditional bulbs,led street light bulb will substitute for

Good bye, traditional bulbs,led street light bulb will substitute forTo meet with you,
Not early spring, the streets,
Rub shoulders Looking back more than the afternoon,
Met in the past, led street light bulb,
From the text of your beauty.
And when I am today, led high bay, the real influx of your arms,
Really discovered the beauty of your cold,
Pregnant with flawless blue
Already exists in every moment of the cold air.
Unspeakable cold of the United States.
Sofia to go to understand the period of dusty 1907,
No religion, led street light bulb,
Only the city’s beautiful historical
Sofia like a Tingting Russian girl
Cover Yu sorrow,
Her fresh and youthful smile,
Quietly standing there,
Queue head is smiling afar,
There is no bell ringer
Only a group of loyal pigeon
The constant Pianfei dance
To bring pleasure and joy,
That once the smoke of war has been a part of the sky blue,
Whistles sound cyclotron in the cold air,
Cold and the United States echo.
Katyusha is still the central street dance you?
A dream in you. led street light bulb.
Graceful seconds of song and swing skirts,
Eventually lead to the number of beautiful encounter and separated by the Rye
The frozen Songhua River,
Daydream stare,
Katyusha tears
The United States and the United States, gazing at a smooth river of memories of thecity’s past.
Looking back on Central Avenue.
Eyeful of the rainbow skirt swirling,
Eyeful of the Katyusha.
The songs echo in the cold sky.
Katyusha’s smile,led street light bulb.
That the United States and the United States cold smile …
Good-bye, Katyusha!
Good-bye, beautiful and cold!

led street light bulb change world weather

The weather is frequently changing state of the atmosphere, both a certain period of time and space within the state of the atmosphere, but also the state of the atmosphere within a certain time interval of continuous change. It can be understood as weather phenomena and weather processes collectively. Weather phenomena occur in the atmosphere means the occurrence of various natural phenomena, a transient atmospheric meteorological factors (such as temperature, pressure, humidity, wind, clouds, fog, rain, snow, frost, thunder, hail, etc.) spatial distribution and overall performance. Weather process is necessarily regional weather phenomena change over time.

These days, the weather is very warm, we use too many cars. If we use LED Lighting Products, such as led street light bulb, then less co2 would be made, then the weather would be changed by led street light bulb. So, led streetlight bulb are very important for us now.

The weather is the state of the atmosphere (such as cold, wind and rain, wet and dry, confront, etc.) in a certain region of the short period and its changes in the general term. Weather systems are usually caused by weather changes and distribution of high pressure, low pressure and high pressure ridge, trough, etc. with the typical features of atmospheric motion systems. Various weather systems have a certain spatial scale and time scale, and a variety of scales between systems are intertwined and interact. A combination of weather systems, constitute a large-scale weather situation constitutes a hemispheric or even global atmospheric circulation. Weather weather system is always in a constant state newborn, development and demise of the process of distribution of its corresponding weather phenomena in the different stages of development. Thus an area of ??weather and weather changes associated with the weather system and its stage of development is the combined result of the dynamic processes of the atmosphere and thermal processes.

All types of weather systems are formed in the atmospheric circulation and geographical environment, development and evolution, reflect the environmental characteristics of a certain region. Such as polar regions and their surrounding throughout the year covered with snow and ice, the air cold and dry, this unique geographical environment of the polar regions low-altitude cold high pressure and high-altitude polar vortex, the trough formation and development of background conditions. The equator and low latitudes year-round hot, humid, the atmosphere is unstable, convective weather systems to produce the necessary condition for development. Middle and high latitudes is cold and warm air is often cross-sui zone, not only warm and cold air masses you come to the turn of frequent, and the baroclinic instability, fronts, cyclones formed, the development of an important foundation. The formation and activities of the weather system, in turn, will give the structure of geographical environment and the evolution of a profound impact. Thus understanding and mastery of the weather system formation, structure, movement variation and the same geographical environment, the relationship between the understanding of weather, climate formation, characteristics, changes and evolution of the forecast geographical environment are very important.

Why Boeing use led street light bulb?

As we all know, Boeing is the top level plane company, but why they like using led street light bulb?

Last year, we receive a inquiry from Boeing, they tell us they need led street light bulb. It’s so strange that led street light bulb are normally installed in Street Lights Fixtures as LED Lighting Produts. After the detail talk, we come to know that, led street light bulb is very useful for the factory of Boeing.

The Boeing Company is the leader of the global aerospace industry company, is the world’s largest civil and military aircraft manufacturers.In addition, Boeing designs and manufactures rotorcraft, electronic and defense systems, missiles, satellites, launchers, and advanced information and communication systems. As the major service providers of the United States National Aeronautics and Space Administration, Boeing operates the Space Shuttle and International Space Station (ISS). Boeing also provides numerous military and civilian route support services to its customers in over 90 countries around the world. In terms of sales, Boeing is one of the largest U.S. exporters.

The Boeing Company is a development and production of military and civilian aircraft company has a high market share in the global aviation industry on the market. With its headquarters in Chicago. 159,000 more than the total employees in the United States and 70 countries around the world. This is a very diverse, talented and very innovative spirit of enterprise. Employees, more than 12.3 million people with college degrees, they came from about 2700 universities around the world, covering almost all commercial and technical areas of expertise,Including manufacturing professional LED streetlight. Boeing attaches great importance to play thousands of distribution in a global provider of talent, and they highly skilled, experienced, and contribution to the success and progress of Boeing products and services.