What are the advantages of solar street light compared with traditional street lights?

As a kind of conductor luminescent material, compared with other luminescent materials, it has the advantages of durability, high efficiency, high brightness, energy saving, environmental protection and fast heat dissipation, and has a large market at home and abroad. LED light sources have achieved great success in the field of landscape lighting. A certain success, the development of solar street light has opened up a wider world. LED has a certain market in a series of key technologies such as heat dissipation and light decay, compared with high pressure sodium lamps and energy-saving lamps. Recently, the Ministry of Science and Technology of China organized and implemented the 'Ten Cities, Ten Thousand Lights' plan, which has received positive responses from all over the country, creating a huge solar street light market, and some domestic and foreign application pilot demonstrations are also in full swing. The advantages of LED as the light source of street lamps are: (1) The solar street light itself has the directivity of light, and there is no diffusion of light to ensure light efficiency. (2) The solar street light has a unique secondary optical design, which irradiates the light of the solar street light to the area that needs to be illuminated, that is, the road surface, which further improves the lighting efficiency and achieves the purpose of energy saving. (3) The light source efficiency of LED has reached 100lm/W at present, and there is still a lot of room for development. The theoretical value can reach 250lm/W. The luminous efficiency of high-pressure sodium lamps increases with the increase of power. Therefore, the overall luminous efficiency of solar street light is stronger than that of high-pressure sodium lamps. (4) The light color rendering of solar street light is higher than that of high pressure sodium lamp. The color rendering index of high pressure sodium lamp is only about 23, while the color rendering index of solar street light can reach 75 or more. The average illuminance can be reduced by more than 20% than that of high-pressure sodium lamps (refer to the British road lighting standard), and, at the level of intermediate vision, the human eye is more likely to distinguish things in a high color temperature environment than a low color temperature environment, avoiding certain dangerous states. occur. (5) The light decay of solar street light is small, the light decay in one year is less than 3%, and it still meets the requirements of road use illumination after 10 years of use. Therefore, solar street light can be designed with lower power than high pressure sodium lamps. (6) The solar street light can be automatically dimmed, which can reduce the power to the greatest extent possible and save electricity when meeting the lighting requirements of different periods of time. (7) LED is a low-voltage DC device, and the voltage driving a single LED is a safe voltage, so it is a safer power supply than using a high-voltage power supply, especially suitable for public places. The characteristics of DC make LEDs particularly suitable for use in conjunction with solar or wind power. [The above content is organized and published by solar street light for you]
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