The development process and future trend of solar LED street lights

Solar LED Street Lights Energy-saving advantages of solar LED street lights With the development of economy, the research and application of green energy-saving lighting will receive more and more attention. As a cold light source product, solar LED lighting has the characteristics of high cost performance, green environmental protection, safety and reliability, stable quality, long service life, easy installation and maintenance, etc. It can be widely used in green space lighting, highway lighting, advertising light box lighting, urban modeling landscape. Lighting and home lighting systems, but the high one-time investment of solar LED lighting is the bottleneck of its development. At present, lighting consumption accounts for about 20% of the total power consumption, and reducing lighting power consumption is an important way to save energy. To achieve this goal, the industry has researched and developed a variety of energy-saving lighting fixtures, and achieved certain results. However, the requirements for green lighting are still far away, and it is imperative to develop and apply more efficient, reliable, safe and durable new light sources. By the end of 2006, the total amount of renewable energy used in my country was 200 million tons of standard coal (excluding the use of biomass energy in traditional ways), accounting for about 0.5 percentage points. In 2010, renewable energy accounted for 10% of the country's total primary energy consumption. goal has taken a solid step forward. At present, my country is promoting the development of the domestic market of photovoltaic power generation from the following aspects: first, start the project of power transmission to the village; second, use photovoltaic power generation in special projects, such as the World Expo, Olympic Games, etc.; third, build photovoltaic power in desert areas power stations; 4. Mobilize some cities to start rooftop plans; 5. Research and formulate electricity price policies to improve the competitiveness of photovoltaic power generation (90% of photovoltaic products are exported and the lack of domestic market may limit the long-term development of China's photovoltaic industry. Once the foreign photovoltaic industry If the policy changes or measures are taken to restrict imports in order to protect the domestic industry, a large number of photovoltaic projects launched in China in recent years will face difficulties). The technological innovation of solar led lighting LEDs are widely used in weak current fields such as signal indication and digital display with low power consumption and extraordinary service life. However, due to the small opening angle of the traditional LED light source, the high brightness of the spot area, the strong directionality of light scattering, the light source is easy to form light spots, and the light uniformity is not good, which restricts its application in the field of lighting. After intensive research and repeated tests by technical personnel in the industry, through the update and technical improvement of the traditional solar lighting fixture structure, intelligent controller, and reflector angle, the optimal inclination angle design is carried out, so that the advantages of the flat head and the round head complement each other, so as to make it shine More uniform, higher overall brightness, lower cost, and more conducive to application promotion. The column-type and torch-type combined light source structure of the flat-head LED can greatly improve the uniformity and illuminance of the illumination light emitted by the LED combined light source by reasonably controlling the installation inclination angle of the flat-head ultra-high-brightness white light LED. This technology can not only enhance the light efficiency, but also the combined light source consumes only about 4W, and the brightness of the light emitted can reach the brightness of 20W energy-saving lamps or 40W incandescent lamps, which can make more effective use of solar energy. Only the capacity of 12W solar cells is needed, and the battery pack of 12V/24Ah can ensure that the LED light source can work continuously and effectively in 5 cloudy and rainy days, and the service life is more than 100,000 hours, which is more than 10 times that of energy-saving lamps. The combination light source specially developed for the field of street lamps, the cross type and the rectangular combination light source, give full play to the advantages of the flat head LED with large opening angle and good light uniformity and the round head LED point area with high brightness, so that the two can learn from each other and maximize the light effect. , Overcome the flat head LED point area brightness is not as good as the round head LED, and the round head LED light uniformity is not as good as the shortcoming of the flat head LED. In terms of the controller, the solar photoelectric conversion technology is used to maximize the collection of electric energy. After the electric energy storage is completed, the battery provides 12V DC power to the light-emitting source, so that the light-emitting source can generate 6500K white light. At the same time, by simplifying the structure of the intelligent controller, the structure is simpler and the failure rate is lower, and technical preparations are made for further cost reduction. Moreover, by detecting the output of the solar cell and the power of the battery, the working state of the system is determined, and the automatic control and intelligent management of the whole system are realized. Promotion and application of solar led street lights As a new green energy, solar energy has been rapidly promoted and applied with its incomparable advantages. As the fourth-generation new light source, it has been effectively used in urban lighting and beautification, road lighting, courtyard lighting, indoor lighting and other lighting and applications in various fields. Especially in remote areas without electricity, solar lighting lamps have wider application prospects. Most people think that it is a great innovation that energy-saving lamps can save 4/5 energy, but LEDs can save 1/4 energy than energy-saving lamps. This is a great innovation of solid light sources. In addition, LED also has the advantages of high light quality, basically no radiation, reliable and durable, and extremely low maintenance cost. It is a typical green lighting source. The successful development of ultra-bright LED has greatly reduced the cost of solar lamps, making them at or close to the cost quotation of the initial installation of the power frequency AC lighting system, and has the advantages of environmental protection, easy installation, safe operation, economical energy saving and so on. Due to the advantages of high light efficiency and low calorific value, LEDs have been increasingly used in the field of lighting, and have shown a trend of replacing traditional lighting sources.