With the acceleration of urbanization, LED street lights have already entered people's vision. Nowadays, LED street lights can be seen everywhere in the streets and alleys of big cities, which adorn the night sky of cities. However, it is still not fully utilized because of its own limitations. In order to ensure that LED street lights can play a more important role in our life, Led street lights Manufacturers(CLASSICLEDLIGHT) should solve the following problems in future research, production and application:

First, the appearance and structure of lights. The appearance of traditional street lights is basically the same, generally divided into two parts: light source and electrical appliance. However, due to the particularity of LED light source and different light distribution methods, the appearance of LED street lights can be described as a variety of patterns, many of which cannot meet the operation requirements, and even some enterprises apply indoor standards to outdoor street lights.

Second, there are problems in the connection between LED lights and light poles. At present, almost all LED street lights are fixed by screws, and few are fixed by hoop bolts. In this way, there are great hidden dangers for the safe operation of lights.

Third: the replaceable problem of light components. LED street light components generally include LED chips, power supplies (drivers) and light housings. The vulnerable parts are mainly power supply and chip. Generally speaking, the LED light chip cannot be replaced, and the power supply (driver) can be replaced. However, many products are not convenient enough to replace the power supply (driver) and the replacement is too time-consuming.

As we all know, the life of LED lights can reach 30,000-50,000 hours. If the LED chip cannot be replaced, it means replacing the whole light and causing waste.

Fourth: the life of power supply (driver). Power supply (driver) is a key component of LED lights. However, the quality of LED chips is generally guaranteed in the market at present, while the life of power supply (driver) is another matter. General manufacturers promise to guarantee 2 years is good. This is because the development of LED street lights has encountered a new bottleneck-the quality of power supply (driver) cannot be guaranteed, which restricts the development of LED street lights.

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Compared with traditional street lights manufacturers represented by high-pressure sodium lights, Led street lights Manufacturers(CLASSICLEDLIGHT) have many obvious and potential advantages.

(1) The high luminous efficiency and low energy consumption

Facts have proved that replacing 250W high-pressure sodium light street lights used on secondary roads with 100W LED street lights with scientific and reasonable light distribution can not only meet the average illuminance required by road lighting standards but also greatly improve the uniformity. However, the average illuminance of high-pressure sodium lights may be higher in some areas, but the uniformity is very poor. Thus, LED street lights have considerable energy-saving space.

(2) Long service life

The life of street light directly affects the maintenance cost of the whole road lighting. At present, the service life of high-pressure sodium lights is generally about 20,000 hours, the service life of high-pressure sodium lights for road lighting is only about 5,000 hours, and the service life of high-power LED is generally 50,000 to 70,000 hours.

(3) Good color rendering

Although the high-pressure sodium light has the highest luminous efficiency in traditional light sources, it's color rendering is the worst, and it's color rendering index Ra is only about 20. Such poor color rendering can only help people to detect the road conditions, and cannot help pedestrians to distinguish clearly. The color rendering index of LED can reach about 80, which is basically close to natural light. The color rendering of the LED is more realistic and can reflect the color of the object itself. The high color rendering of LED is undoubtedly helpful for drivers and pedestrians to identify targets and provide better traffic conditions under the same road brightness.

(4) Quick Start

Incandescent light lights up at one point, but the actual starting time is about 0.1~0.2 seconds. Gas discharge lights such as high-pressure sodium lights and metal halide lights need tens of seconds or even ten seconds from start-up to stable light output and can be started only after cooling for 3-6 minutes after being turned off. However, the start-up time of LED is only a few tens of sodium seconds (ns), and there is no waiting time for a restart. LED lights can normally work in continuous on/off state.

(5) Facilitate optical design

LED is small in size and can emit light directionally on the half-plane. It can be regarded as a point light source in light design, which is very suitable for optical design by using a lens or reflector to obtain ideal light distribution and achieve higher light efficiency.

(6) Strong plasticity and firm structure

The plastic shape of LED street lights is strong, which can reflect decorative and local cultural characteristics through shape design and add additional value of aesthetic feeling and city image.

(7) Low carbon and environmental protection, especially suitable for solar photovoltaic technology

Gas discharge lights such as high-pressure sodium lights contain harmful substances such as mercury, which will cause long-term serious pollution to the environment and water sources after the light source is discarded. LED chips and their packages can meet the requirements of the EU RoHS directive and are free of harmful substances such as mercury and lead. The LED can be recycled after being discarded and will not pollute the environment.

(8) Has a potential total cost advantage

At present, the unit price of LED street lights is more than 4 times higher than that of high-pressure sodium lights. A 250W LED street light is equivalent to a 400W high-pressure sodium light, but the former costs 6,000 to 8,000 yuan, while the latter costs only 1,500 yuan. However, as long as the characteristics of high luminous efficiency and long service life of LED street lights can be brought into full play, the difference in initial cost can be recovered by saving electricity and maintenance costs. With the gradual maturity of LED street light technology and the continuous reduction of initial cost, its potential advantages in total cost will emerge in a short time.

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For the selection of Solar led street light(CLASSICLEDLIGHT), we must first understand the illumination coefficient, road width, street light height, and other information in this area, and select the light pole height to be suitable for the brightness of the light cap. If the height of the pole of a solar LED street light does not match the brightness of the light cap completely, if the pole is low but the brightness of the light cap is too high, then too bright light will stimulate people's vision and glare is too high; On the contrary, the brightness is too dark to let pedestrians see things clearly, which undoubtedly increases traffic safety.

The following points should be paid attention to when installing solar LED street light:

1. During the construction process, attention must be paid to the installation position and the depth and width of the foundation. Please be willing to choose the best size according to the height of the light pole. When making embedded parts, attention must be paid to the selection of the ground cage with reinforcing ribs.

2. The foundation construction must not use cheap materials in order to save money, because that will reduce the bearing capacity of the foundation.

3. The installation of the light pole must wait until the foundation is completely solidified before construction. If the concrete is not solidified enough, it is urgent to install it. That is wrong because the wind-proof level of the light pole will be greatly reduced, and some will be inclined after installation, which will greatly affect the overall wind-proof level of the light pole.

Solar energy is a typical independent photovoltaic power generation system. This is only one aspect of the problem. What is more serious is that it is also a seasonal load that increases with the decrease in solar radiation. From the above analysis, it can be seen that the annual winter solstice is the time when the amount of solar radiation is the smallest, that is, when the amount of power generated by the solar cell module is the smallest, the annual winter solstice is the shortest day and the longest night, and the road lighting takes the longest time.

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With the development of China's economy, people's awareness of environmental protection is increasing year by year, and green light source LED with no ultraviolet and infrared radiation and low heat will be more popular. Experts predict that Solar led street light(CLASSICLEDLIGHT) will continue to be the main light source in the whole lighting industry in the next ten years. With the advantages of energy-saving, reliability, long service life, diversified light colors, simplicity, low pollution, lightness and so on, it will firmly occupy the first place in outdoor lighting.

The awareness of environmental protection is enhanced, and solar LED street light that saves energy and carbon will become more and more popular.

LED has the characteristics of no stroboscopic light, no ultraviolet radiation, no electromagnetic wave radiation, lower heat radiation, etc., and uses light diffusion technology to eliminate glare, making it a real healthy light source. As a new generation of environment-friendly light sources, solar LED street light is expected to be regarded as a new industry. Solar LED street light products not only have the advantages of long life, energy-saving, safety, environmental protection, etc. but also will reduce the production cost in the long term. In the near future, they will inevitably replace other energy-saving light sources, such as high-energy lights, etc. It is understood that the annual scale of China's outdoor lighting building landscape LED lighting market is 20 billion, and the street light market has a market demand of 40-50 billion per year.

Experts predict that in the next five years, solar LED street light will be popularized in the domestic field with the improvement of technology (price reduction), which also shows that solar LED street light will be fully applied with the progress of technology year by year, replacing energy-saving lights.

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Now people can't live without lights. The world without lights at night is dark, so it is necessary to buy lights to illuminate. LED street lights occupy first place in the field of lights. How to choose a good Led street lights Manufacturers(CLASSICLEDLIGHT)?

1. It is not an easy problem for engineering merchants to choose a suitable LED street lights manufacturers. If it is a low-priced light, we must make more comparisons before making choices, otherwise, there may be mistakes in quality.

2. In addition to some brand agents, LED street lights manufacturers have their own brands, which gives customers who want to wholesale more market space for their own brands.

3. LED street lights manufacturers are not only for lighting, the basic lighting can meet all the traditional modern light sources. What we pay more attention to is whether it is green and environmentally friendly, and the life span is 60% longer than that of ordinary lights.

4. Everyone thinks that the higher the color temperature of LED street lights, the higher the luminous efficiency, and the brighter the room looks, but in fact, the lower the color temperature, the more comfortable the eyes look and the lower the relative power consumption.

5. If the LED street light is used improperly, the eyes will be dizzy, thus causing damage to the eyes.

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We know that many local engineering companies have not carried out anti-theft installation due to construction, leading to the theft of batteries and panels of Solar led street light(CLASSICLEDLIGHT). This situation not only affects normal lighting but also causes unnecessary property losses. According to reports of engineering cases, batteries and panels are commonly stolen. Faced with this situation, how should we take anti-theft measures for solar LED street light?

At present, the development of solar LED street light is not perfect. Compared with traditional street light poles, its composition is messy, which brings great difficulties to daily maintenance. At present, there are many deficiencies in the management and service system construction of solar LED street light equipment, resulting in the late management and service of solar LED street light can not keep up with the speed of theft and damage after the installation.

In order to reduce the theft of solar LED street light, the following aspects can be strengthened:

1. The cost of solar LED street light is higher than that of the traditional street light pole, and the technology of anti-theft and stability is not sophisticated yet. It should be set up in a public place or a safer place in the city, not easily installed in suburban areas.

2. Pay attention to the safety monitoring of solar LED street light, and set up a monitoring system or a device alarm system in simply stolen places so as to learn the usage of solar LED street light in time and carry out useful management.

3. Select-control boxes and other materials of solar LED street light that meets the standards and quality standards and ensures that the device of the consolidating parts meets the requirements during the device process, so as to ensure the consolidation of the solar LED street light and also play an anti-theft role to a certain extent.

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In 2015, under the background of declining revenue of lighting enterprises, intensified competition in the industry and severe impact on the real economy, Led street lights Manufacturers(CLASSICLEDLIGHT) faced many challenges in innovation. With the gradual maturity of LED, the pull of government demonstration projects and the rise of specialized stores, outdoor lights are the earliest segments of LED lighting products to enter the application field and are truly "invisible champions".

Whether it is outdoor lighting, landscape lighting, or government projects, outdoor commercial lighting, the rapid development of outdoor lighting in recent years is obvious to all. However, in the past two years, the "quality door" that LED outdoor lighting broke out in practice has also brought the industry back to reason.

The rapid development of urbanization in China and the continuous increase in energy conservation and emission reduction have provided a huge potential market for the future development of LED street lights. With the development of domestic LED lighting industry for many years, the quality of LED energy-saving products has entered a new stage. In this year's government work report, strong signals to support environmental protection and energy-saving products were also elaborated. LED outdoor lighting has become the main force in energy-saving transformation.

Among outdoor lights, street lights have the greatest development potential. According to relevant statistics, in 2012, the usage of LED street lights in China was about 5 million, up 44.09% from the previous year, accounting for 14% of the total usage. In 2013, the domestic market penetration rate of LED street lights reached more than 15%, becoming the most representative lights for LED lighting promotion and application in China.

Some experts said that LED street lights will still maintain a compound annual growth rate of about 50% until 2015. In 2015, the overall penetration rate of LED lights in road lighting will reach 46%, and more than 30 million LED street lights and tunnel lights will be added in the next two years. These favorable expectations have brought greater development potential to LED street lights.

Outdoor lighting products have not attracted as much attention as indoor lighting for a long time. However, its extensive use still determines its incomparable sales scale and is a well-deserved invisible sales champion. Since entering the industry as a separate category of lights in the 1990s, the category, technology and application range of outdoor lights have been continuously expanded and upgraded, and their applications have become increasingly extensive. The demand range has increased geometrically.

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The solution to the problem of LED street light heat source should be based on the material and composition of the light, and solve the problem of high-power LED heat source from the inside out. When the light-emitting component is bonded to the aluminum substrate, the thermal conductive adhesive plays a key role. Some Led street lights Manufacturers(CLASSICLEDLIGHT) think that the thermal conductivity film or the thermal conductive rubber pad has a good thermal conductivity, and the thicker the film thickness, the better, but does not want the thermal resistance problem. The thermal conductivity is good, and the thermal resistance of the film thickness is useless. Moreover, the thermal conductive film or the soft thermal conductive gasket does not really adhere to the substrate, and there are actually many voids in the bonding surface.

The thermal resistance should be low to use the thermal conductive adhesive. It is recommended to use the soft ceramic thermal conductive adhesive for screen printing. The soft ceramic thermal conductive adhesive of screen printing is different from the traditional laminated thermal conductive adhesive film. The soft ceramic thermal conductive adhesive is soft semi-liquid. When the screen printing machine blade is coated on the aluminum substrate, the thermal conductive particles will penetrate into the pores of the substrate surface and Fill it up to full.

In the external protection of LED lights, LED lights and soft ceramic heat-dissipating paints are recommended. The spray-type soft ceramic heat-dissipating paint can be directly sprayed on the outside of the LED light, and the construction operation is simple, and can be adapted to various shapes of heat-dissipating structures, and can also be adjusted to different colors, in response to the needs of landscape design. The soft ceramic particles in the spray-type heat-dissipating paint are subjected to nano-treatment, and the fine particles are not only easy to be sprayed, but also the heat-conducting particles on the same coating area are dense and dense, and the area oftemperature volatilization is also increased. Let the heat of the LED luminaire be quickly conducted out.

The cost structure of LED street lights has been continuously improved with the development of packaging technology, carrier board design and heat dissipation module structure, and the cost has also decreased with the development of technology and market demand. However, there are not many manufacturers investing in material improvement, which is mainly related to the history and habits of Taiwan's industrial and commercial development. Taiwanese manufacturers are more prone to process and design, and have less ink on material development. Therefore, in the issue of solving technical problems or reducing costs, it is more biased towards purchasing thinking or management thinking.

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After the LED street light is turned on for a long time, the temperature inside the LED light will gradually rise. If the heat generated cannot be dissipated in time, it will have a great impact on the service life of the street light. Will cause led street light fixtures and street light heads damaged. The following is an analysis of the factors affecting the temperature of Led street lights Manufacturers(CLASSICLEDLIGHT).

LEDs also generate heat during operation, depending on the overall luminous efficiency. Under the action of external electric energy, the radiation of electrons and holes recombines to produce electroluminescence, and the light radiated near the PN junction needs to pass through the semiconductor medium of the chip itself and the encapsulating medium to reach the outside (air). Comprehensive current injection efficiency, radiation luminescence quantum efficiency, the external light extraction efficiency of the chip, etc., finally only 30-40% of the input electrical energy is converted into light energy, and the remaining 60-70% of the energy is mainly caused by non-radiative recombination lattice vibration. Formal conversion of heat.

Whether the LED light works stably, the quality is good or bad, and the heat dissipation of the light body itself is very important. The heat dissipation of the high-brightness LED light on the market often uses a natural blade heat sink to dissipate heat, and the effect is not ideal.

The main structure of LED lights using LED light source is composed of: LED, heat dissipation structure, driver, lens and other parts. Therefore, heat dissipation is also an important part. If the LED does not dissipate heat well, its life will be affected. Thermal management is a major issue in high brightness LED applications. Since the p-type doping of the group III nitride is limited by the solubility of the Mg acceptor and the higher starting energy of the hole, heat is particularly easily generated in the p-type region, and this heat must be dissipated through the entire structure on the heat sink; The heat dissipation path of the LED device is mainly heat conduction and heat convection; the extremely low thermal conductivity of the substrate material leads to an increase in the thermal resistance of the device, which causes a serious self-heating effect and has a devastating effect on the performance and reliability of the device. The effect of heat on high-brightness LEDs. The heat is concentrated in the chip with small size, the temperature of the chip rises, causing the non-uniform distribution of thermal stress, the luminous efficiency of the chip and the lasing efficiency of the fluorescent powder to decrease; when the temperature exceeds a certain value, the device failure rate increases exponentially.

According to research data, the reliability drops by 10% for every 2 °C rise in component temperature. In the LED lighting system composed of multiple LED strings and parallel arrangement, the problem of heat elimination is a problem that has always been concerned in the industry. Addressing thermal management issues has become a primary factor in high-brightness LED applications.

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For LED lighting products, high-cost performance is mainly reflected in product quality and manufacturer service. High-cost performance refers to the development of products in the direction of high quality and high added value. Looking at the consumer market, although "attractive" prices can attract the attention of consumers, the products that can really beloved by consumers are definitely products with high-cost performance. With the improvement of living standards, the consumer's concept has changed. The pursuit of products is no longer limited to price. Nowadays, quality has become an important factor for consumers to choose products. Under the demanding requirements of consumers, led street light products will be hit hard. How can Led street lights Manufacturers(CLASSICLEDLIGHT) impress consumers?

Many people in the industry pointed out that in the fierce market competition, led street lights manufacturers only provide "value for money" products, which can no longer be a sharp weapon for them to occupy the market. Only by providing "value for money" products can they shine brilliantly. Industry insiders said that to improve the high-cost performance of products, we can start with ensuring product quality and improving service quality.

1. Product quality is the foundation on which an enterprise can live forever.

This is especially important for led street lights manufacturers because LED lighting products are different from fast consumer products and are usually replaced only once in a long time. For consumers, the first consideration in choosing light is the quality of the products. The quality of products with high-cost performance is the first factor. Making lights with the highest cost performance should be the first mission of led street lights manufacturers. Only by ensuring the quality of the products can led street lights manufacturers to gain consumers' favor for a long time in the fierce market competition and obtain a larger share in the market development.

2. Provide consumers with high-quality services.

Consumers will preferably consider the manufacturer's service quality when purchasing LED lighting products. Obviously, service is also an important factor affecting development. Providing and ensuring quality service is also one of the powerful means for manufacturers to occupy the market. Many experts in the industry said that the quality of products and services is only the foundation. To provide high cost-effective products, the price should be rationalized.

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