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believe that there are quite a part of people will confuse the led street lamp and sodium lamp light, even in many media reports have sodium mixed food, for the led street lamp.
now solar street lamps using LED light source, and the traditional street lamp is the widespread use of high pressure sodium lamp and low pressure sodium lamp, the high pressure sodium lamp and LED us to compare street lamp illumination at night.
high pressure sodium lamp as the yellow light, color difference, leds for white light, good color rendering. The illumination characteristics of both difference is obvious, high pressure sodium lamp luminous color is yellow, color temperature and imaging are relatively low, index of sunlight imaging, imaging index is only about high pressure sodium lamp. The LED light source color temperature of light - Between flexible choice, development index is up to above, the led lamps and lanterns light color is more close to natural light.
only about % utilization rate of high pressure sodium lamp light source of lamps and lanterns, lamp light Angle for & deg; , most have to pass a reflector to get to the designated area after reflection. LED street lamps light source utilization high, which is about % LED diode light Angle can be consistent with lamps and lanterns light Angle, so most of the LED lamps and lanterns light can direct exposure to the designated area, only a few need through reflection.
high pressure sodium lamp bulb enable time is long, the electricity - Minutes to reach normal brightness, restart time interval generally greater than the minutes. LED street lamps and lanterns is not start delay problems, may at any time through, at any time to work, can very easily achieve energy-saving control.
sodium lamp as the light with the lights went out when the temperature difference is big, if without the respiratory system, light body reflector are easy to be corrosion of harmful gas to produce a larger loss, light and LED street lamps and lanterns is does not need to add the respiratory system.
actually as outdoor lighting, solar street lights are more popular than traditional street light, in addition to energy conservation and environmental protection, installation of solar street light is much more economic value and social value and equipment automation social environment will become more and more impetus to the development of solar street light.