Country Road Lighting

In recent years, the quality of life and living environment of Country residents is gradually improving, and the cultural life in Country areas is becoming increasingly rich, and the enlarging scope of activities brought about by them has increased the demand for roads and road lighting in Country areas. At present, the construction of Country road lighting facilities in China is still in its infancy, and it is far from being able to meet the actual growing demand. It is reported that there are currently about 750,000 villages in China. Except for a few villages in the eastern and southern coastal areas, street lamps have become popular in other regions Normal road lighting is not yet available and is mainly concentrated in the western region. Therefore, the construction of Country road lighting systems and the selection of reasonable lighting products have become an urgent problem.

Production development is the central link in the construction of a new countryside and the material basis for other goals. Accelerating the design of Country public foundation Construction, especially road construction, is the top priority in accelerating production development.

The importance of Country road lighting

Country road lighting affects all aspects of life, and traditional road lighting has exhausted our limited resources. And each new energy attracts people’s interest, and more and more LED street lights are installed. New Country street lights play an important role and significance in modern society. Human beings need light, otherwise at night people will not only be unable to continue working, or even lose money, and play a normal daily life without security. In addition to saving energy, the new Country street lights do not bring any commodity zero pollutants, so they do not harm the environment. In Country areas, such as new products to promote green solar LED lights, to avoid resource depletion, which also brings benefits to the Country economy and protects the environment.

Lighting standards for country roads

People-oriented is an important principle in road lighting design. This revision also reflects the pedestrian road lighting standards. When pedestrians are walking on the road, their visual tasks are more complicated, including: observing the road surface, identifying ground obstacles, judging road forms, identifying various facilities on the road, observing and understanding the surrounding environment, perceiving directions, and identifying other pedestrians on the road. Facial features and action intentions, etc. In order to meet the requirements of these visual tasks, in addition to providing the necessary ground lighting, it is also necessary to provide appropriate space lighting. Therefore, the standard for pedestrian road lighting is the original “average pavement illumination, minimum pavement illumination, On the basis of “vertical illuminance”, two indicators of “semi-cylindrical illuminance” and “glare limit” have been added.

In recent years, with the national policy tilting towards the countryside, related supporting facilities in country have also improved, and the application of related new energy has also been put on the agenda. Solar energy, as a clean energy, has also been applied by the majority of Country areas. The situation takes into account the related cost of electricity, the emergence of solar street lights and street lights solves this problem well. According to the relevant conditions of Country roads, the current solar street lights are mainly about 6 meters in height, among which the installation height of the lamps is between 5–5 and 5 meters; most of the light sources use LED light sources, and the power is between 20–30W; related solar energy Most of the battery panels are made of polysilicon.

Application and analysis of LED lights in road lighting

The working principle of LED is suitable for rural road lighting needs

Light-emitting diode, abbreviated as LED, is the abbreviation of English light emitting diod. Its light-emitting principle uses solid semiconductor chips as the light-emitting material. When a forward voltage is applied to both ends, the minority carriers and majority carriers injected into the PN junction of the semiconductor material When photons are recombined, photons are emitted to generate light, which directly converts electrical energy into light energy. As a solid light source, LED was originally used as a kind of indicator light and display board. However, with the development of technology, LED can be used as a light source now. It has a service life of up to 100,000 hours, and has many advantages such as environmental protection, no mercury, rich colors, continuous flashing, 0% ~ 100% dimming, and no flicker in the output light. The development trend of the new generation of energy saving and environmental protection light source.

Choice of light sources and lamps

LED street light fixture is a product integrating LED light source technology, LED light control device technology, LED module connector technology and lighting design technology. The application of high-power LED lamps to road lighting has been the focus of the lighting industry in recent years. In order to promote energy saving and emission reduction, and effectively guide the healthy and rapid development of semiconductor lighting applications, the Ministry of Science and Technology launched the “Ten Cities and Ten Thousands” plan in March 2009, which has accelerated the development and upgrade of high-power LED lamps and promoted The rapid application of LED lamps in street lighting projects in major cities. Various local governments have used LED street lights as an important task in energy saving and emission reduction in lighting projects. Because LED lamps are a new product, there are still many problems in many technical aspects that have not been solved, which has led to the use of LED lamps to produce illuminance, uniformity and service life that do not meet relevant standards. Standards, the LED lamps produced by various manufacturers are diverse and cannot be used with each other, which makes it difficult for the street lamp maintenance unit to maintain the LED lamps.

Advantages of LED light sources over traditional light sources

1.Long life: LED light source is a solid cold light source, epoxy resin package, there is no loose part in the lamp body, and there are no shortcomings such as easy burning, thermal deposition, and light decay of the filament. In theory, the service life can reach 50,000 ~ 100,000 hours means 4150 hours of lighting per year, which can have a theoretical guarantee of 12 ~ 24 years of maintenance, which is 5 ~ 10 times longer than traditional light sources.

2.Green and environmental protection: There is no mercury in the LED light source, which will not cause environmental pollution; there is no ultraviolet and infrared in the spectrum, it will not destroy the cultural relics, and the waste utensils can be recycled.

3.Safe and reliable: The power supply voltage of LED light source is between 6 ~ 24V, which is relatively safe, especially suitable for public places.

4.High Dominant Color: The color rendering of LED light source is higher. Sodium pressure lamp is much higher. The color rendering index of high pressure sodium lamp is only about 23, while the color rendering index of LED light source is above 75. From the perspective of visual psychology, it has the same brightness. The average light intensity can be reduced by more than 20% compared to high-pressure sodium lamps (refer to British road lighting standards).

5.The LED light source can be started instantaneously, and the color is rich, which is very suitable for the occasion where the color requires change and can be switched on and off instantly.

6.The LED light source is small in size, strong in combination, and has a very large design space. It can make full use of point lighting, surface lighting, line lighting and local close-ups in the building structural space, which is very suitable for landscape art lighting and hidden lighting.

7.LED light source is impact resistant, vibration resistant and not easy to break.

Comparison of LED lamps and traditional lamps

1.Comparison of color temperature

At present, in order to improve the luminous efficiency of the lamps, the manufacturers of LED lamps generally use a high color temperature light source of 5000 ~ 6000K at the color temperature. Because the current white LED is basically based on the technology of combining blue LED and YAG yellow phosphor, this It is the lowest cost and highest efficiency among all the combinations of white LEDs. If a warm white low color temperature light source is used, yellow powders need to be doped with powders of other colors (such as red powder and green powder), but the relative conversion of other color powders is relatively low, which will cause the attenuation of luminous flux, that is, the reduction of light efficiency. .

Compared with the high color temperature of LEDs, the yellow light produced by HPS lamps is softer, and human eyes will feel more comfortable. According to professional surveys, many drivers and pedestrians do not like high color temperature light. In fact, this is also one of the reasons why Jinye lamps cannot be promoted. In the inquiry survey, some people also held the opposite view and felt that the white light of LED is better than the yellow light of HPS.More comfortable, but also mixed with the impact of different color rendering performance.

2.Comparison of color rendering

The degree to which a light source renders an object’s color is called color rendering, that is, the degree of color fidelity. A light source with high color rendering reproduces the color better, and the closer we see the color to the natural color. In principle, the closer artificial light is to natural light, the more accurately human eyes can distinguish the color of things.

The color rendering of LED light sources is much higher than that of high-pressure sodium lamps. The color rendering index of high-pressure sodium lamps is only 23, and the color rendering index of LED light sources reaches more than 75. Therefore, LED street lights reproduce strong things and improve people’s ability to distinguish things. In addition, some experts believe that from the perspective of visual psychology, to achieve the same brightness, the average brightness of LED lamps can be higher than The sodium pressure lamp is reduced by more than 20%.

3.Comparison of light attenuation

Manufacturers of LED lamps now claim that the luminous decay of LED lamps is less than 3% a year, and they still meet the road use illumination requirements for 10 years. However, according to the actual tracking test data, the LED lamps of individual manufacturers use light after one year. The decay is more than 5%. As for how long it takes the light to fall below the illuminance maintenance value, further tracking tests are needed. HPS street lights will have a relatively large initial light decay during operation, but the later curve is relatively stable. During the average life of HPS street lights, it can maintain a high level.

4.Comparison of mechanical safety

HPS street light fixtures are larger and thicker, while LED street light fixtures are flatter. Therefore, HPS street lights have larger wind-receiving areas than LED street lights, and require higher strength of light poles and light arms.

5.Comparison of energy saving control

In recent years, HPS street lights have developed a variety of energy-saving methods and products for energy-saving control, including step-down energy savers, variable power ballasts, and variable power electronic ballasts. However, due to the characteristics of gas discharge lamps, sufficient The terminal voltage is de-ionized and excited. When the voltage or current drops to a certain level, it will cause the light source to not work properly or even turn off the light. Through relevant energy saving measures,The energy saving effect can reach about 30%.

LED is a solid light source. When the current flows from the LED anode to the cathode, the semiconductor crystal will emit light. The intensity of the light is related to the current. Therefore, it can achieve 0% ~ 100% dimming function, which can be flexibly controlled according to the needs of the scene. Light output, adjust light intensity, improve energy saving effect.

6.economic comparison

At present, due to the high cost of LED chips, the research and development costs of LED lamps must also be included in the price of the lamps. HPS lamps are mature products, which is why the sales price of LED lamps is 3 to 4 times that of HPS lamps. Therefore, the one-time investment is large. In terms of operation and maintenance, the life of ordinary HPS light sources can reach more than 20,000H, and the life of ballasts is more than 50,000H. The structural design of LED street light lamps and lanterns is an integrated design, whether the LED lamp is damaged or the driving power fails,-once there is The problem must be overall removal and replacement, large maintenance workload and high cost, while high-pressure sodium lamps only need to replace bulbs or triggers, ballasts and other accessories, and the maintenance workload is small and the cost is small.

Advantages of OUR LED lights

1. its own characteristics-one-way light, no light diffusion, to ensure lighting efficiency. LEDs do not contain harmful metal mercury, and will not cause harm to the environment when they are scrapped. The LED street light has a unique secondary optical design, which illuminates the light of the LED street light to the area to be illuminated, further improving the lighting efficiency to achieve the purpose of energy saving. Uniform light color: No lens is added, and uniform light color is not sacrificed to increase brightness, thereby ensuring uniform light color without aperture. Reliable quality: All circuit power supplies use high-quality components, and each LED has separate overcurrent protection, so there is no need to worry about damage.

 

2.The light decay is small, the light decay is less than 3% in one year, it still meets the road requirements after 10 years of use, and has a long service life: it can be used for more than 80,000 hours, providing a three-year quality guarantee. The disadvantage is that the life of the power supply is not guaranteed. High light efficiency: using chips ≥ 100LM, can save more than 75% of energy compared to traditional high-pressure sodium lamps. The high-pressure sodium lamp has a large decay, which has dropped by more than 30% in about a year. Therefore, the design of the LED street lamp can be lower than the high-pressure sodium lamp.

 

3.The LED street lights have automatic control energy-saving devices, which can achieve the maximum possible reduction of power and energy savings when meeting lighting requirements at different time periods. Humanized functions such as computer dimming, time-phase control, light control, temperature control, and automatic inspection can be realized. Easy installation: no need to bury cables or rectifiers, directly connect to the lamp pole or nest the light source into the original lamp housing. Excellent heat dissipation control: In summer, the temperature is controlled below 45 degrees, and passive cooling is adopted, so the heat dissipation guarantee in summer is insufficient.

 

4.The energy saving effect of the above principles is significant, and it can save more than 60% of electricity by replacing high-pressure sodium lamps. Low maintenance cost: Compared with traditional street lamps, LED street lamps have extremely low maintenance costs. After comparison, the entire investment cost can be recovered in less than 6 years.

The development direction of LED lights in rural road lighting!

Country Green Lighting Plan

Since some grid constructions are not connected to remote Country areas, Country areas should form independent power generation and lighting systems. To solve these problems, installing the nearest network, installing energy-efficient solar LED street lights, and promoting the application of clean energy technologies may be an excellent choice to solve the lighting problem in Country areas, and then achieve “zero carbon emissions” in Country lighting. It is reported that according to the current situation of Country lighting, the Ministry of Construction has launched an investigation and has formed a preliminary “Country green lighting plan” program, which will soon be implemented. Fundamentally speaking, using clean energy for power generation can not only solve the problem of electricity use in Country areas, but also make more efficient use of resources, reduce carbon emissions, and protect the precious ecological environment in Country areas.

Low carbon environmental protection solar LED street light

With the development of the times, road lighting has gone from energy-saving street lights to today’s LED street lights, from energy-saving to more energy-saving, from good to better! Let LED street lights become comprehensive Every family can have their own street lights! Solve the problem of road lighting in the new countryside with the concepts of high brightness, low energy consumption and long life! As a new type of light source in the 21st century, LED lighting is an innovation and change in the history of light sources. It is optimistic about its future prospects, adopts a positive and enthusiastic attitude, supports and promotes its development, and improves, enhances, and promotes its application.