When night falls in the city, the bright light that illuminates the streets, the continuous and stable lighting in the industrial park, and the lights that create a comfortable atmosphere in the square often come from the same lighting equipment - LED area (street) lights. As the core product in the field of modern public lighting, LED area (street) lights are reshaping the lighting pattern of cities and outdoor spaces worldwide with their excellent performance and environmental advantages. For companies engaged in foreign trade and cross-border e-commerce, a deep understanding of such products can not only enhance professionalism but also provide customers with more valuable services.
- What is an LED Street Light?
- How is the light-emitting principle of LED Street Light formed?
- Analysis of the development trend of LED Street Light
- The energy-saving advantages and disadvantages of LED Street lights?
- What are the uses and application scenarios of LED Street Light?
- LED Street Light environmental protection and safety: practicing the concept of green development
- LED Street Light industry standards and certification requirements
- What are the common LED Street Lights in the market?
- FAQ of LED Street Light?
- Conclusion
Product definition and core composition
LED area (street) lights are outdoor lighting equipment that uses light-emitting diodes (LEDs) as light sources. They are suitable for lighting large areas such as roads, squares, parking lots, and industrial parks. Compared with traditional lighting equipment such as high-pressure sodium lamps and metal halide lamps, LED area (street) lights have essential differences in the principle of light emission. Traditional lamps mainly emit light through gas discharge or thermal radiation, while LED area (street) lights are based on the principle of electronic transition of semiconductors. When current passes through semiconductor materials, electrons and holes recombine to release energy and directly convert it into light energy. This light-emitting method greatly improves the energy conversion efficiency.
From a structural point of view, LED area (street) lights are mainly composed of LED light source modules, driving power supplies, heat sinks, optical lenses, lamp housings, and intelligent control systems. The LED light source module is the core component, which determines the key optical parameters of the lamp, such as the luminous flux, color temperature, and color rendering index; the driver power supply is responsible for converting AC power into DC power suitable for LED operation, and stabilizing the current output to ensure the normal operation of the light source; the heat sink is the key to ensuring the long life of the LED. Since the LED generates heat when working, an efficient heat sink (such as fin heat sink, heat pipe heat sink) can dissipate the heat in time to avoid light decay due to excessive temperature; the optical lens is used to control the distribution of light to achieve the lighting effects required for different scenes; the intelligent control system gives the lamp intelligent functions such as remote dimming, induction control, and fault monitoring.
How is the light-emitting principle of LED Street Light formed?
To understand the formation process of the light-emitting principle of LED Street Light, we need to start with its core component semiconductor. I will combine the knowledge of electron transition, energy level change, etc. to analyze the formation mechanism of its light-emitting principle in detail.
The light-emitting principle of LED Street Light is based on the characteristics of semiconductors, which are completely different from traditional light sources. Its unique light-emitting mechanism enables it to have advantages such as high efficiency and energy saving. The specific formation process is as follows:
Semiconductor material characteristics: The core component of the LED Street Light is the light-emitting diode, which is made of semiconductor materials. Common ones are compound semiconductors such as gallium arsenide (GaAs), gallium phosphide (GaP), and gallium nitride (GaN). The conductivity of semiconductors is between conductors and insulators. The energy state of its internal electrons is determined by the band structure. There are conduction bands and valence bands, and there is a forbidden band between the two. At room temperature, the valence band is full of electrons and the conduction band is almost empty.
Electron transition and energy release: When a forward voltage is applied to the LED, electrons will enter the N-type semiconductor (multiple electrons) of the LED from the negative electrode of the power supply, while holes (which can be understood as positively charged "vacancies") will enter the P-type semiconductor (multiple holes) from the positive electrode of the power supply. In the P-N junction (the junction of P-type and N-type semiconductors), electrons and holes will recombine. Electrons jump from the high-energy conduction band to the low-energy valence band to fill holes, and the energy of electrons decreases in this process. According to the law of conservation of energy, excess energy will be released in the form of photons, which is the essence of LED luminescence.
Determine the color of light: The energy of photons determines the color of light, and the energy of photons is determined by the bandgap width of semiconductor materials. Different semiconductor materials have different bandgap widths, so the color of light emitted is also different. For example, LEDs made of gallium nitride (GaN) materials usually emit blue light, and LEDs made of gallium phosphide (GaP) materials can emit green or yellow light. To obtain white light, a common method is to coat the blue light LED chip with yellow phosphor that can be excited by blue light. The blue light is mixed with the yellow light emitted by the phosphor to form white light.
Continuous and stable light emission: As long as the appropriate forward voltage is continuously applied to the LED, electrons and holes will be continuously injected into the P-N junction area and recombine, thereby continuously generating photons and achieving stable light emission. At the same time, in order to ensure the normal operation and life of the LED, it is necessary to equip a suitable driving power supply to convert the alternating current into a stable direct current, and control the current size to avoid damage to the LED due to excessive current.
This unique light-emitting principle makes the LED Street Light far more efficient in converting electrical energy into light energy than traditional lamps, without generating a large amount of heat energy, reducing energy waste, and also laying the foundation for its long life and fast response characteristics.
Analysis of the development trend of LED Street Light?
With the continuous iteration of technology and the evolution of market demand, LED Street Light is striding towards intelligence, integration, and greening. These development trends will reshape the pattern of outdoor lighting.
I will combine industry reports with market trends to deeply analyze the development trend of LED Street Light from the dimensions of intelligence, integration, and greening.
Intelligence: Creating a smart lighting ecosystem
The deep embedding of Internet of Things (IoT) technology has endowed LED Street lights with powerful intelligent interaction capabilities. Lamps are no longer just simple lighting tools, but have transformed into key nodes in the smart city ecosystem. Through various built-in sensors, such as light sensors, radar sensors, infrared sensors, etc., LED Street Light can perceive the surrounding environment information in real time, such as ambient light intensity, vehicle flow, pedestrian flow, etc. Based on these precisely sensed data, the lamps can automatically and accurately adjust the brightness. When the traffic and pedestrian flow are sparse late at night, the brightness is automatically reduced to 30% - 50%, which not only meets the basic lighting needs but also avoids energy waste; once the approach of vehicles or pedestrians is detected, the full brightness lighting is immediately restored to ensure traffic safety. For example, in some smart transportation pilot cities, LED Street Light is interconnected with the intelligent transportation system, and the brightness of street lights is dynamically adjusted according to the status of traffic lights and road congestion, guiding vehicles to pass smoothly and relieving traffic pressure.
Not only that, with the help of wireless communication technology (such as Bluetooth, Wi-Fi, LoRa, etc.), LED Street Light can also achieve remote centralized control. City managers can sit in the office and use a special mobile phone APP or computer management platform to uniformly dispatch and accurately manage all street lights in the jurisdiction. Lighting strategies can be flexibly adjusted according to different scenarios such as weather changes, holidays, special events, etc. In severe weather such as heavy rain and fog, the brightness of street lights is automatically increased to ensure road visibility; during holidays, special lighting effects are set to create a festive atmosphere. At the same time, the system also has a fault warning function. Once a lamp fails, it can send an alarm message to the management platform in the first time, inform the fault location and fault type in detail, greatly improve maintenance efficiency and reduce maintenance costs.
Integration: Building a multifunctional smart light pole
In order to effectively deal with the problem of tight urban space resources, the integration trend of LED Street Light and other urban infrastructure has become more and more obvious. The "multi-pole-in-one" smart light pole is becoming the new favorite of future urban construction. With LED Street Light as the core, the smart light pole integrates 5G base stations, environmental monitoring equipment, Wi-Fi hotspots, video surveillance cameras, emergency call buttons and other functions. On the one hand, it greatly saves urban space and avoids the visual clutter and space waste caused by the numerous poles; on the other hand, it realizes the efficient sharing of resources and the deep interconnection of data.
Take the integration of 5G base stations and LED Street Light as an example. Smart light poles provide a stable mounting platform for 5G base stations, solving the problems of difficult site selection and high construction costs for 5G base stations. At the same time, the high speed and low latency characteristics of 5G networks can provide strong support for the intelligent control and data transmission of LED Street Light, and improve the response speed and control accuracy of the lighting system. Environmental monitoring equipment is integrated on smart light poles, which can collect real-time data on the concentration of pollutants such as PM2.5, PM10, sulfur dioxide, nitrogen oxides, etc. in the air, as well as meteorological information such as temperature, humidity, wind speed, and wind direction. These data are uploaded to the urban environmental monitoring platform in real time through the data transmission channel of LED Street Light, providing data basis for urban environmental governance and meteorological warning.
Greening: Practicing the concept of sustainable development
Against the backdrop of the global active promotion of the "dual carbon" goal, LED Street Light continues to explore and innovate in green energy saving. On the one hand, the application of new materials and advanced production processes continues to improve the energy efficiency of LED Street Light and reduce energy consumption and carbon emissions. For example, LED chips with higher photoelectric conversion efficiency have been developed, and new heat dissipation materials and structural designs have been adopted to improve the heat dissipation performance of lamps, reduce energy loss caused by poor heat dissipation, and further reduce the overall energy consumption of LED Street Lights.
On the other hand, the combination of renewable energy sources such as solar energy and wind energy with LED Street Lights is becoming more and more widespread. In some remote areas, islands, mountainous areas and other areas where power grid coverage is difficult or power supply is unstable, solar LED street lights have become an ideal lighting solution with their own advantages. During the day, solar panels convert solar energy into electricity and store it; at night, the stored electricity is used to power LED lamps to achieve lighting functions, completely getting rid of dependence on traditional power grids, and truly achieving zero electricity bills and zero carbon emissions. Some areas have also tried to combine small wind turbines with LED Street Lights, using wind power generation to power lamps, further expanding the application scenarios of renewable energy, and injecting new impetus into achieving green and sustainable lighting development goals.
Energy-saving advantages and disadvantages of LED Street lights
Technical advantages and application value
(I) Energy saving and consumption reduction: significantly reduce operating costs
The energy-saving advantages of LED area (street) lights are derived from their advanced light-emitting principles and technological innovations. In the process of light emission, a large amount of electrical energy is converted into heat energy loss in traditional lighting fixtures. For example, only about 20% of the electrical energy of high-pressure sodium lamps is converted into light energy, and the remaining 80% is wasted in the form of heat energy; while LED area (street) lights are based on the electronic transition light-emitting mechanism of semiconductors, and the efficiency of converting electrical energy into light energy is as high as 60% - 80%, which greatly reduces energy loss. This efficient energy conversion characteristic reduces the energy consumption of lamps from the root, making it much lower than traditional lamps in terms of power consumption under the same lighting effect.
With the support of intelligent control technology, the energy-saving potential of LED area (street) lights has been further released. By integrating light sensors, radar sensors or video surveillance systems, lamps can achieve intelligent dimming. In the middle of the night when the traffic and pedestrian flow are sparse, the system automatically reduces the brightness of the lamps to 30% - 50%, which can not only meet basic lighting needs but also avoid energy waste; when vehicles or pedestrians are detected approaching, the lamps quickly restore full brightness lighting to ensure safety. For example, after a main road in Shenzhen, my country adopted intelligent dimming LED area (street) lights, compared with traditional fixed brightness lighting, it saves about 25% of additional electricity each year. In addition, the remote centralized control system allows managers to uniformly dispatch all lamps in the jurisdiction through mobile phone APP or computer terminals, flexibly adjust lighting strategies according to special circumstances such as weather changes and holidays, and realize refined energy-saving management.
From a long-term cost perspective, the energy-saving advantages of LED area (street) lights bring significant economic benefits to users. Take a county with 5,000 street lights as an example. If the traditional 250W high-pressure sodium lamp is replaced with a 100W LED street lamp, and the lighting is 12 hours a day, and the electricity cost is calculated at 0.6 yuan per kilowatt-hour, the electricity cost can be saved by about
5000×(250−100)×12×365÷1000×0.6=2190000
yuan in a year. Not only that, with the global promotion of renewable energy, LED area (street) lights can also be perfectly combined with solar and wind power generation systems. In some remote areas or areas with unstable power supply, solar LED street lights do not need to be connected to the power grid. They rely on solar panels to store energy during the day and automatically illuminate at night, completely realizing zero electricity bills. This not only solves the lighting needs but also reduces dependence on traditional energy, helping to achieve the "dual carbon" goal.
Globally, many cities and regions have achieved amazing energy-saving results through the large-scale application of LED area (street) lights. After Amsterdam replaced traditional street lamps on the city's main roads with LED area (street) lamps, the annual lighting electricity bill was reduced by 40%, and the city's carbon emissions dropped significantly; Los Angeles, USA, replaced 140,000 street lamps in the city with LED street lamps in the "LED Street Lamp Renovation Plan", saving more than 50 million US dollars in electricity bills each year, and the reduction in carbon emissions is equivalent to planting millions of trees. These successful cases fully prove that LED area (street) lamps are not only an efficient lighting equipment, but also an important force in promoting global energy conservation, emission reduction and green development.
(II) Disadvantages of LED Area (street) Light
Although LED area (street) lights have significant energy-saving advantages, there are also some limitations in practical applications. First, the initial investment cost is high. Compared with traditional lighting fixtures, the research and development and production of LED area (street) lights involve more complex technologies and precise manufacturing processes, and they need to be equipped with high-quality drive power supplies, heat sinks and other components, resulting in the purchase cost of a single lamp being 30% - 50% higher than that of traditional lamps. For large-scale lighting projects, such as urban road reconstruction, the initial capital investment in purchasing lamps is huge, which is a great economic pressure for some municipal departments or enterprises with limited budgets.
Second, there is a problem of light decay. Although the theoretical service life of LED area (street) lights is long, in actual use, as the working time increases, their luminous flux will gradually decay. High temperature, voltage fluctuations, frequent switching, and other factors will accelerate the process of light decay. Generally speaking, after 5-8 years of use, the luminous flux of some LED area (street) lights may drop to 70%-80% of the initial value, affecting the lighting effect. If you want to maintain a stable lighting level, you need to replace the lamps in advance, which increases the maintenance cost.
In addition, the heat dissipation requirements are strict. If the heat generated by the LED area (street) lights during operation cannot be dissipated in time, the temperature of the LED chip will rise, which will accelerate the light decay and even shorten the life of the lamp. In order to ensure good heat dissipation, the lamps need to be equipped with a large and complex radiator, which not only increases the weight and installation difficulty of the lamps but also increases the production cost. In some special environments with high temperature, high humidity or poor ventilation conditions, the heat dissipation problem is more prominent, and additional heat dissipation measures may be required, further increasing the operating cost.
At the same time, the optical design is difficult. To achieve ideal lighting effects, LED area (street) lights require precise optical design to control light distribution and avoid glare, dark areas and other problems. Different application scenarios have different requirements for lighting angles, spot shapes and uniformity, which places high demands on the optical lens design and light source layout of the lamps. If the optical design is unreasonable, it may lead to poor lighting effects and affect user experience, and optimizing the optical design often requires more R&D costs and time.
What are the uses and application scenarios of LED Area (street) Light?
LED Street lights play an important role in many fields with their unique advantages. I will combine its performance characteristics to explain its specific uses and applications in different scenarios.
LED Street lights are widely used in many fields with their advantages of energy saving, long life, and good light quality. Different scenarios have different lighting requirements, and their uses also have different focuses:
Urban road lighting: This is the most common application scenario of LED area (street) lights. On urban main roads, secondary roads, branch roads, and other roads, it can provide stable and uniform lighting to ensure the safe passage of vehicles and pedestrians at night. For example, at a crossroad, LED area (street) lights can enable drivers to see the road conditions and traffic signs in all directions through reasonable light distribution design; at a bend, their light can effectively cover the bend area, reduce visual blind spots, and reduce the probability of traffic accidents. At the same time, through the intelligent control system, the brightness can be automatically adjusted according to the traffic volume and time to achieve energy-saving effects.
Highway and expressway lighting: On highways and urban expressways, LED area (street) lights can be installed at intervals to provide continuous lighting for long-distance roads. Its high brightness and good color rendering can help drivers see road markings, signs, vehicles, and obstacles ahead in time. Moreover, due to its long life and low maintenance cost, it is suitable for use in highway environments with heavy traffic and difficult maintenance. Some highways will also combine LED area (street) lights with intelligent transportation systems, monitor road conditions in real time through sensors, and adjust the brightness or color of lights to prompt drivers of changes in road conditions ahead, such as fog, accidents, etc.
Industrial park and logistics center lighting: Industrial parks and logistics centers have large areas and frequent night operations, and there is a strong demand for large-area, high-brightness lighting. LED area (street) lights can be installed around factories, warehouse passages, logistics loading and unloading areas, etc., to provide sufficient lighting for forklifts, trucks, and other operating vehicles, and ensure the safety and efficiency of nighttime cargo loading and unloading, transportation, and other operations. At the same time, its energy-saving characteristics can reduce the electricity costs of enterprises, and its long life also reduces the impact of frequent lamp replacements on production operations. In addition, some industrial parks will also use the intelligent dimming function of LED area (street) lights to provide full brightness lighting during peak operation periods and reduce brightness during non-operating hours to further save energy.
Square and park lighting: In public leisure areas such as city squares and parks, LED area (street) lights not only have lighting functions, but also have the role of landscape creation. Through dimming and color adjustment technology, the lights can be adjusted to different colors and brightness according to the needs of different festivals and activities to create a unique atmosphere. For example, during the Spring Festival, the LED area (street) lights in the square are adjusted to red to add a festive atmosphere; on the park trails, warm-toned LED area (street) lights are used to provide a warm and comfortable lighting environment for citizens who are walking and relaxing. At the same time, its good color rendering can make flowers, trees, and landscape facilities present true colors at night, improving the viewing experience of the landscape.
Parking lot lighting: Whether it is an indoor or outdoor parking lot, LED area (street) lights can effectively illuminate parking areas, passages, and entrances and exits. It can help drivers find parking spaces accurately and enter and exit parking lots safely. It can also enhance the safety of parking lots and reduce the occurrence of crimes such as theft and robbery. Compared with traditional lamps, LED area (street) lights have low energy consumption and can save a lot of electricity bills for parking lot operators, and their light distribution is even, without obvious lighting blind spots. Some smart parking lots will also link LED area (street) lights with parking space detection systems. When parking spaces are vacant, the light brightness of the corresponding area is reduced, and it is automatically brightened when a vehicle enters, realizing intelligent energy-saving management.
Airport and port lighting: In areas such as airport runways, aprons, port terminals, and yards, the reliability, stability, and lighting effects of lamps are extremely high. LED area (street) lights meet these needs with their excellent performance. At the airport, it can provide clear guiding lighting for aircraft takeoff, landing, and taxiing; at the port, it can illuminate the dock loading and unloading area and container yard to ensure the safety of large-scale machinery and equipment at night. Moreover, LED area (street) lights have strong adaptability to harsh environments, and can operate stably in both high-temperature and high-humidity port environments and airport environments with strict requirements on electromagnetic interference.
Lighting for scenic spots and tourist attractions: In order to create a unique night landscape and attract tourists, scenic spots and tourist attractions widely use LED area (street) lights. In the scenic area of ancient buildings, the precise projection of LED area (street) lights can highlight the outline and characteristics of ancient buildings and show the historical and cultural charm; in natural scenic areas, the lights are cleverly arranged in forest trails, lakeside and other areas, which can not only facilitate tourists to visit at night, but also create a quiet and romantic atmosphere. In addition, scenic spots can also use the intelligent control system of LED area (street) lights to set different lighting scene modes, such as daily mode, holiday mode, etc., to meet lighting needs while reducing energy consumption.
LED Street Light environmental protection and safety: practicing the concept of green development
LED area (street) lights also perform well in environmental protection and safety. Traditional lighting fixtures such as high-pressure sodium lamps and fluorescent lamps usually contain harmful substances such as mercury and lead. Once improperly disposed of, they are easy to pollute soil, water sources, etc. LED area (street) lights do not contain harmful substances and are green and environmentally friendly products. At the same time, it generates less heat when working and the surface temperature is relatively low, which reduces the risk of fire caused by high temperature. In places such as industrial parks and storage areas with more flammable materials, the use of LED area (street) lights can significantly improve safety.
In addition, LED area (street) lights are powered by DC and have no flicker. Traditional lighting fixtures will flicker at a certain frequency when powered by AC power. Long-term exposure to this lighting environment can easily cause visual fatigue, headaches and other discomfort symptoms. The stable light output of LED area (street) lights can better protect human eye health and provide a more comfortable and safe lighting environment for people traveling and working at night.
Based on these advantages, LED area (street) lights have been widely used around the world. In the field of urban road lighting, more and more countries and regions are replacing traditional street lights with LED street lights to achieve energy conservation and emission reduction goals. For example, Los Angeles, USA, replaced 140,000 street lights in the city with LED street lights in the "LED Street Light Renovation Plan", saving more than 50 million US dollars in electricity bills each year and reducing a large amount of carbon emissions. In industrial parks and logistics centers, LED area (street) lights can provide high-brightness and uniform lighting to ensure the safety and efficiency of night operations; in scenic spots and squares, LED area (street) lights not only meet lighting needs, but also can create a unique night scene atmosphere through dimming and color adjustment functions to enhance the attractiveness of the area.
LED Street Light industry standards and certification requirements
Because LED area (street) lights involve public safety and energy conservation and environmental protection, different countries and regions around the world have formulated strict industry standards and certification requirements. In the United States, products must comply with UL (Underwriters Laboratories) certification to ensure electrical safety and performance; in Europe, CE certification is a basic requirement for entering the market, covering the Low Voltage Directive (LVD) and Electromagnetic Compatibility Directive (EMC) and other aspects; in addition, the RoHS Directive strictly restricts the use of harmful substances such as lead and mercury in lamps to protect the environment and human health.
It is crucial to be familiar with and meet these certification requirements. For example, for the Middle East market, products must be certified by SASO (Saudi Arabian Standards Organization); in Australia, products must comply with the AS/NZS series of standards. At the same time, with the world's increasing attention to energy conservation and environmental protection, Energy Star certification and DLC (DesignLights Consortium) certification have become important standards for measuring the energy efficiency of LED area (street) lights. Products that have obtained these certifications are more competitive in the market.
Common types of LED street lights in the market
Traditional LED street lights
This type of LED street light continues the classic style of traditional street lights in appearance. The lamp pole is usually straight, cylindrical or conical, with a height of 6-12 meters, which is suitable for most urban roads. The lamp head is simple in design, mostly rectangular or elliptical, and uses a single high-power LED chip or a combination of multiple low-power chips to provide uniform and sufficient road lighting. For example, the common 100W-200W power specification can meet the lighting needs of different road levels such as main roads and secondary roads. The luminous flux can reach 10000-20000lm, and the color rendering index is generally between 70-80. It can clearly restore the color of objects and ensure traffic safety at night.
Solar LED Street Lights
Solar LED street lights are the representative of green and environmentally friendly lighting. It is equipped with solar panels on the top, which convert solar energy into electricity and store it in batteries during the day, and automatically power the LED lamp heads at night to achieve an independent lighting system without laying complex cable lines. It is widely used in some remote villages, mountainous areas and areas with unstable power supply. The power of solar panels ranges from 50W-200W, and the batteries are mostly lithium batteries with a capacity of 12Ah-100Ah, which can ensure that the street lights can still work normally for 3-7 days in continuous rainy weather. For example, in some sparsely populated rural areas in northwest my country, solar LED street lights have become the main choice for road lighting due to their convenient installation and zero electricity costs.
Smart LED Street Lights
With the development of Internet of Things technology, smart LED street lights have emerged. It has built-in multiple sensors and communication modules, and has functions such as remote control, automatic dimming, and fault monitoring. Through light sensors, street lights can automatically adjust the brightness according to the ambient light intensity; using radar or infrared sensors, when vehicles and pedestrians are detected approaching, the lighting brightness can be increased in time, and the low brightness energy-saving state can be restored after the person or vehicle leaves. At the same time, managers can remotely switch and dim street lights through mobile phone APP or computer management platform, and grasp the operating status of street lights in real time, which greatly improves the efficiency and intelligence level of lighting management. In some smart city pilot areas, smart LED street lights can also be linked with traffic and environmental monitoring systems to provide more data support for urban management.
Special-shaped landscape LED street lights
Special-shaped landscape LED street lights focus on landscape decoration functions and are usually used in parks, scenic spots, pedestrian streets and other places. The lamp poles and lamp heads have various shapes and incorporate artistic design elements, such as imitating branches, flowers, animal forms, etc., which not only provide lighting, but also beautify the environment and create a unique night scene atmosphere. The lighting power of this type of street lamp is relatively low, generally between 30W-80W, focusing on the softness of light and color expression. Some products also have dimming and color adjustment functions, which can change the color of the light according to different scenes and time periods to create a romantic, warm or vibrant visual effect.
High-pole LED street lights
High-pole LED street lights are mainly used for large-area lighting scenes such as large squares, parking lots, and industrial parks. The height of the lamp pole is usually 15-40 meters, and multiple high-power LED lamp heads are installed on the top to achieve large-area, no-dead-angle lighting coverage. The power is relatively large, and the power of a single lamp head can reach 200W-500W. Through reasonable optical design, the light can be evenly distributed to the area below, meeting the lighting needs of vehicles and pedestrians in open spaces, and ensuring the safety and smoothness of night activities.
These different types of LED street lights play a key role in different scenarios with their own advantages, and together build a lighting system for modern cities and outdoor spaces. If you want to know more about the specific application cases or technical details of a certain type of LED street light, I am happy to share it.
FAQ of LED Street Light?
In order to answer common questions about LED street lights, I will select high-frequency questions around product performance, use and maintenance, market application, etc., and answer them in detail from the perspectives of principle, technology, and actual cases.
LED street lights are widely used in the field of lighting, and users will have many questions during use and purchase. The following are some common questions and answers from the aspects of performance, installation, maintenance, and market:
Q: How to quantify the energy-saving effect of LED street lights compared to traditional street lights?
A: The efficiency of converting electrical energy into light energy of LED street lights is as high as 60% - 80%, while only about 20% of the electrical energy of traditional high-pressure sodium lamps is converted into light energy. Take the common 250W high-pressure sodium lamp and 100W LED street lamp as examples. The lighting effects of the two are similar, but the LED street lamp works 12 hours a day, which can save about
(250−100)×12×365÷1000=657
kWh of electricity a year. The energy-saving effect is significant, and long-term use can greatly reduce electricity costs.
Q: Can the service life of LED street lamps really reach the claimed 50,000-100,000 hours?
A: The theoretical service life of LED street lamps is based on an ideal working environment, and the actual service life is affected by the use conditions. If the heat dissipation is good, the current is stable, and the ambient temperature is suitable, 50,000-100,000 hours can be achieved. However, in high temperature and high humidity environments, or when the voltage fluctuates greatly and the switch is frequently switched on and off, the LED chip will age faster, the light decay will accelerate, and the service life may be shortened to 30,000-50,000 hours.
Q: Can solar LED street lights work normally on continuous rainy days?
A: The battery capacity of solar LED street lights determines their working time on rainy days. Generally speaking, solar LED street lights equipped with 12Ah - 100Ah lithium batteries can work normally on rainy days for 3-7 consecutive days. However, long-term bad weather may cause the battery to run out of power and affect lighting. At this time, you can consider equipping a larger capacity battery or auxiliary power supply system.
Q: How to achieve remote control of smart LED street lights?
A: Smart LED street lights have built-in communication modules such as Bluetooth, Wi-Fi, LoRa, 4G/5G, etc. Through these communication technologies, street lights are connected to the management platform. Managers can send instructions to control the switch of street lights, adjust the brightness, and set lighting strategies on mobile phone APP or computer management platform; at the same time, street lights can also send their own operating status, fault information and other data back to the management platform in real time to achieve remote centralized management.
Q: Do I need professional technicians to install LED street lights?
Answer: Although the installation steps of LED street lights are relatively simple, they involve electrical connections, high-altitude operations and other operations. To ensure standardized and safe installation, it is recommended that professional technicians perform the installation. Professionals can correctly handle line connections and grounding protection to avoid damage to lamps or safety hazards caused by improper installation. For solar LED street lights, professionals are also required to reasonably install the solar panel angle to obtain the best lighting effect.
Q: How to troubleshoot LED street light failures?
A: First check whether the power supply is normal and whether the line is damaged or broken; if the power supply is normal, check whether the drive power supply is damaged, which can be judged by measuring the input and output voltages; if the drive power supply is normal, it may be a failure of the LED light source module, and you can observe whether the LED chip is black or not bright. Smart LED street lights can use the fault warning information of the management platform to quickly locate the fault type and location and improve the troubleshooting efficiency.
Q: How is the dimming and color adjustment function of special-shaped landscape LED street lights achieved?
A: Special-shaped landscape LED street lights usually use RGB or RGBW (red, green, blue or red, green, blue, and white) LED chips. The controller changes the current size of LED chips of different colors to adjust their luminous intensity, thereby realizing the dimming and color adjustment function. Users can set different color modes and brightness through remote controls, mobile phone APPs or management systems to meet the lighting needs of different scenes.
Q: How can high-pole LED street lights ensure lighting uniformity?
A: High-pole LED street lights ensure lighting uniformity through reasonable optical design. On the one hand, professional optical lenses are used to accurately refract and reflect the light emitted by LEDs to control the projection angle and range of light; on the other hand, by adjusting the layout and irradiation direction of multiple lamp heads, the light is supplemented to each other and the lighting dead angle is reduced, thereby achieving uniform lighting in large areas.
The above are the answers to frequently asked questions about LED street lights. If you have other specific questions, such as specific market needs, technical details, etc., please feel free to ask and I will answer them further.
Conclusion
Does the above content meet your expectations for the development trend analysis of LED Street Light? If you want to supplement the trend analysis in a specific market area or application scenario, the application advantages are highlighted. If you also want to add specific advantage details, or adjust the cases and data, please feel free to communicate with me.
You can let me know at any time and I will further improve the content.