Solar street light manufacturers introduce common features of solar street light

Solar street light manufacturers introduce the common advantages of solar street light. 1. Its own characteristics - unidirectional light, no light diffusion, to ensure lighting efficiency. 2. The solar street light has a unique secondary optical design, which irradiates the light of the solar street light to the required lighting area, further improving the lighting efficiency and achieving the purpose of energy saving. 3. The LED has reached 110-130lm/W, and there is still a lot of room for development, with a theoretical value of 360lm/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; (this overall luminous efficiency is theoretical, in fact, the luminous efficiency of high-pressure sodium lamps above 250W is higher than that of LEDs light). 4. The light color rendering of solar street light is much higher than that of high-pressure sodium lamps. The color rendering index of high-pressure sodium lamps is only about 23, while the color rendering index of solar street light is above 75. From the perspective of visual psychology, to achieve the same brightness, solar street light has the same brightness. The average illuminance can be reduced by more than 20% compared with high pressure sodium lamps. 5. The light decay is small, the light decay in one year is less than 3%, and it still meets the road requirements after 10 years of use. However, the high pressure sodium light decay is large, and it has dropped by more than 30% in about a year. Therefore, the solar street light is designed to use power. can be lower than high pressure sodium lamps. 6. Solar street light has an automatic control energy-saving device, which can achieve the maximum possible power reduction and save energy when meeting the lighting requirements of different periods. It can realize computer dimming, time-segment control, light control, temperature control, automatic inspection and other humanized functions. 7. Long lifespan: It can be used for more than 50,000 hours and provides a three-year quality assurance. The disadvantage is that the life of the power supply is not guaranteed. 8. High luminous efficiency: Using chips of ≥100LM or more can save energy by more than 75% compared to traditional high-pressure sodium lamps. 9. Easy installation: no need to bury cables, no rectifiers, etc., directly connect to the lamp pole or nest the light source into the original lamp shell. 10. Excellent heat dissipation control: The temperature in summer is controlled below 45 degrees, and passive heat dissipation is adopted, and the heat dissipation guarantee in summer is insufficient. 11. Reliable quality: The circuit power supply adopts high-quality components, and each LED has its own over-current protection, so there is no need to worry about damage. 12. Uniform light color: no lens is added, and uniform light color is not sacrificed to improve brightness, so as to ensure uniform light color without aperture. 13. LED does not contain harmful metal mercury, which will not cause harm to the environment when it is scrapped. Combining the above principles, the energy-saving effect is remarkable, and the replacement of high-pressure sodium lamps can save more than 60% of electricity. Low maintenance cost: Compared with traditional street lights, solar street lights have extremely low maintenance costs. After comparison, all investment costs can be recovered in less than 6 years. Disadvantages 1. The power of a single LED is low. In order to obtain high power, multiple parallel use is required. 2. Low color rendering. The color displayed under LED illumination is not as real as incandescent lamps, which is a technical problem to analyze from the spectral distribution. 3. Light spot. Due to the defects in the manufacturing process of the white LED itself and the matching error with the reflector cup or lens, it is easy to cause the 'yellow circle' problem. 4. LED illumination uniformity problem. If the secondary optical design is not carried out, the illumination of the LED is relatively concentrated, so the secondary optical design must be carried out to make the light intensity distribution in the shape of a bat. 5. The problem of LED light decay. Compared with low-power LEDs, the light decay of high-power solar street lights will be much better. But low-power LED heat dissipation is very small. However, high-power LEDs have the problem of heat dissipation that cannot be solved, and the brightness will be significantly reduced after heating, so the power cannot be increased. The largest Spark solar street light sold in the market is 360W.
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