Road lighting is an indispensable part of urban infrastructure construction. It not only guarantees the safety and order of night traffic, but also plays an important role in improving the quality of urban life and promoting economic development. With the increasingly severe global ecological and environmental problems and the intensification of energy supply contradictions, the limitations of traditional street lights have gradually come to the fore, and LED street lights, as a new type of lighting tool, are gradually becoming the new choice for urban lighting by virtue of their significant advantages.
solar led street light
Road lighting, as a key part of urban lighting, is directly related to residents’ life, transportation and city image. Good road lighting can provide a clear vision for motorized and non-motorized drivers to ensure nighttime driving safety and reduce the incidence of traffic accidents. At the same time also help pedestrians to see the surrounding environment, identify the direction, convenient night out activities.
Traditional street lights mostly use high-pressure sodium lamp lighting, there are many disadvantages. High-pressure sodium lights are less efficient in converting electrical energy into light energy, wasting a lot of light energy and shortening the life of the wick. In the current global ecological environment is damaged, the contradiction between supply and demand of social resources is prominent, as well as China’s urban electricity demand continues to rise, some areas of the power supply is tight in the context of the high energy consumption of traditional street lights is more and more prominent.
In this situation, LED street lights as a new lighting tool came into being. With its own series of advantages, it has gradually become an ideal choice for urban lighting energy-saving transformation, and is expected to effectively replace the traditional high-pressure sodium lights to help achieve energy saving and emission reduction goals.
LED streetlight light source conductivity is very stable, there will be no light interruption, misdirection and other phenomena in the use of the process. This is due to its advanced semiconductor light-emitting technology, which ensures that the current is stabilized through the light-emitting diode, so that the light output is always uniform and continuous, even if the long working hours are not easy to flicker or extinguish the situation. Its surface is made of high-quality tempered glass, after a special process, not only the hardness is extremely high, with excellent explosion-proof, shockproof performance, but also has excellent waterproof ability, to meet the strict waterproof grade standards, can withstand heavy rain, snow and other inclement weather.
solar led street light
Whether in the coastal typhoon areas, or in the mountainous areas of the vibration of the road, can ensure that the street lamp in a variety of harsh environments are still stable and durable lighting. This stability makes the LED street light internal can also maintain a relatively stable working state, reduce the failure caused by environmental factors, to protect the reliable operation of the lighting system, very suitable for heavy traffic, high requirements for lighting stability of urban road lighting, for the city night traffic and pedestrian safety escort.
| Comparison Item | LED Street Light | Traditional High-Pressure
Sodium Lamp |
| Installation Cost | Higher | Lower |
| Maintenance Cost | Low | High |
| Energy Efficiency | Significant | Poor |
LED street light tube is made of high-quality durable materials, these materials are treated with special technology, the surface is smooth and dense, with excellent anti-fouling performance, dust, bird droppings and other debris is difficult to adhere to it, self-cleaning ability is very strong. At the same time, the lamp surface covered with special electrostatic material, can effectively repel water and impurities, even in a humid and rainy environment, it is not easy to form a water residue or impurity buildup, greatly reducing the investment in manpower and material resources due to cleaning and maintenance, effectively reducing the cost of cleaning.
Although in the initial stage, the installation and laying cost of LED street light is slightly higher than traditional street light, but with its long service life and stable performance, it greatly reduces the subsequent maintenance frequency and cost. Moreover, the energy-saving effect of LED street lights is very outstanding, compared with traditional street lights can save a lot of electricity, long-term use, in the electricity bill can also realize significant cost savings. Comprehensive view, LED street light not only can provide stable and reliable service for city lighting, in the long-term use of the process, its comprehensive cost-effective more advantageous, highly popularized and applied value.
LED street light adopts green lighting technology, with semiconductor light-emitting diode as the core light source, does not contain harmful substances such as mercury, etc., in the process of production, use and disposal, the pollution of the environment is very small, in line with the concept of sustainable development. Its intelligent adjustment function is a highlight, through the built-in light sensor, time controller and Internet of Things technology, can keenly perceive the external environment changes. At night, when the traffic flow and the flow of people is reduced, it automatically reduces the brightness and shortens the lighting time to avoid wasting energy; and when it detects pedestrians and vehicles close to it, or when the weather suddenly becomes dark, it can instantly and rapidly reach the required brightness and provide a stable and sufficient light source.
This intelligent adjustment not only effectively adapts to the urban road environment alternating day and night, weather changes and fluctuations in pedestrian flow and other complex situations, but also significantly reduces energy consumption. As verified by actual data, compared with traditional street lights, LED street lights can realize 30% – 50% energy saving effect through intelligent adjustment function, which not only saves a lot of costs for urban lighting, but also contributes to building a green and environmentally friendly urban environment.
In terms of lighting effect and energy consumption, the difference between LED streetlights and traditional high-pressure sodium lights is particularly significant. LED streetlights have a power of only 60 watts, but they can achieve a similar illumination level as 250-watt high-pressure sodium lights under similar circumstances; on the contrary, traditional high-pressure sodium lights have a power of up to 250 watts. This means that LED street lights only use traditional high-pressure sodium lights about a quarter of the power, can achieve the same lighting effect, energy saving advantage is self-evident. After the actual investigation, some cities will replace the original high-pressure sodium lights with LED light source, some sections of the year-on-year power saving rate of up to 30% or so. In addition, under the same power, the copper wire area of LED streetlights is only one-third of that of ordinary streetlights, further reflecting its energy-saving advantages.
solar led street light
LED street light adopts directional light-emitting method, no scattering and diffusion of light, stable light source. Each LED lamp bead is independent of each other and can be adjusted according to environmental changes, realizing the highest efficiency at the lowest cost. Individual LED streetlights have a long lifetime, typically up to 100,000 hours. LED streetlights are easier to install than traditional streetlights, with no cables to bury and no rectifiers. The power supply circuitry consists of high-quality, individually integrated components, each LED bead has an individual lifetime, and over current protection eliminates the need to worry about internal damage. At the same time, LED street lights are equipped with energy-saving control devices, which can meet the lighting needs of different times of the day, effectively save energy and reduce noise, and illuminate with the most appropriate power.
The development of street light source has gone through many important technological innovations. The earliest high-pressure mercury lamp, its luminous principle is the use of mercury vapor discharge to produce ultraviolet light, to stimulate the phosphor luminescence. High-pressure mercury lamp luminous efficiency than the incandescent lamp has improved significantly, but there are still blue light color, poor color rendering and other issues.
Subsequently appeared high-pressure sodium lights, through the discharge of sodium vapor at high temperature and high pressure to produce light-emitting phenomena, its luminous efficiency is higher, an average of up to 100 – 120lm / W, and has a good fog performance, suitable for road lighting. At present, high-pressure sodium lights still occupy a large share of the street lamp market in China, accounting for more than 60% (about 15 million). Metal halide lights are developed on the basis of high-pressure mercury lights, which add metal halide in mercury vapor to improve the light efficiency and color rendering, widely used in commercial lighting and some road lighting scenes with high requirements on light color.
With the continuous progress of science and technology, induction lights and LED lights and other new light sources are gradually entering the market. Induction lights utilize the principle of electromagnetic induction to generate induced current, which excites the gas discharge inside the bulb to emit light, and has the advantages of long life and maintenance-free. And LED lights with its unique semiconductor light-emitting technology, in energy saving, environmental protection, life and other aspects show great advantages, and become the most potential street light source.
Under the global trend of sustainable development, governments have taken energy saving and emission reduction as an important development goal. As an important area of energy consumption, urban lighting has become a key target of energy saving and emission reduction. LED streetlights, with its significant energy saving advantages, meets the requirements of the global sustainable development strategy and has been strongly supported and promoted by governments. Many countries and regions have introduced relevant policies and regulations to encourage the use of LED streetlights for urban street lighting, and give financial subsidies, tax incentives and other policy support to projects using LED streetlights, providing a favorable policy environment for the development of the LED streetlight market.
With the rapid development of Internet of Things (IoT), Big Data, Artificial Intelligence (AI) and other technologies, the construction of smart cities is booming globally. LED streetlights, as an important node of smart cities, not only provide lighting services, but also realize inter connectivity with city management systems through the integration of sensors, communication modules and other devices. For example, by installing traffic flow sensors and environmental monitoring sensors on LED streetlights, real-time traffic and environmental data can be collected to provide a basis for decision-making in urban traffic management and environmental protection; the use of Internet of Things (IoT) technology can realize remote monitoring and intelligent control of LED streetlights to improve the efficiency and intelligence of urban lighting management. The acceleration of smart city construction has brought huge development opportunities for the LED street light market and promoted the rapid expansion of the LED street light market.
solar street light
The deep integration of Internet of Things (IoT) technology with LED streetlights is one of the important trends for future development. By integrating various sensors, such as temperature sensors, humidity sensors, PM2.5 sensors, traffic flow sensors, etc., on LED streetlights, real-time monitoring of urban environment and traffic conditions can be realized. The collected data is transmitted to the city management center through wireless network, and the managers can adjust the city management strategy according to the data in time, such as optimizing the timing of traffic signals and adjusting the sanitation operation plan. At the same time, IOT technology can also realize remote control and fault diagnosis of LED streetlights, improving the efficiency and reliability of streetlight management.
Visible light communication technology (Li-Fi) is a new type of communication technology that utilizes visible light for data transmission. LED streetlights have a natural advantage as the emission source of visible light. In the future, LED streetlights can not only provide lighting for urban roads, but also serve as a carrier for data transmission, realizing high-speed and stable data transmission. For example, in the field of intelligent transportation, LED street lights can communicate with vehicles to provide real-time traffic information, navigation data, etc.; in the construction of smart cities, LED street lights can be used as communication nodes of the Internet of Things to achieve interoperability between devices, and to build a smarter and more efficient urban network.
Adaptive lighting technology can dynamically adjust the light level of LED streetlights according to real-time road conditions, weather, time and other conditions. For example, in road sections and time periods with high traffic flow, streetlights can automatically increase brightness to ensure traffic safety; late at night when there are fewer pedestrians and vehicles, streetlights can automatically reduce brightness to save energy. In addition, adaptive lighting technology can also adjust the color temperature of the light according to the weather conditions, and improve the penetration of the light in rainy and foggy days and other adverse weather conditions, providing road users with a better visual experience.
The concept of human-oriented lighting design will pay more attention to people’s needs and feelings. The future of LED street lights will be based on different time periods of pedestrians, vehicle activity patterns, as well as changes in the human biological clock, adjusting the color temperature, brightness and light distribution. For example, in the early morning and evening, the use of warm-toned lights to create a warm and comfortable atmosphere; late at night, reduce the brightness and color temperature of the lights to reduce the impact on the residents’ rest. In addition, people-oriented lighting will also take into account the needs of different groups of people, such as the elderly, children, etc., to provide them with a safer and more comfortable lighting environment.
LED streetlights have demonstrated strong competitiveness in the field of urban lighting by virtue of good light source stability, obvious cost advantages, energy saving and environmental protection, as well as other outstanding features. Reviewing its development history, from traditional light source to today’s wide range of applications, LED street lights continue to adapt to market demand and technological development. Looking ahead, driven by market growth drivers and emerging technology trends, LED streetlights will play a more important role in urban lighting and sustainable development, becoming the mainstream choice for urban lighting and contributing to the construction of green, smart and livable cities.
