What is led street lights?
LED street lamp refers to the street lamp made of LED light source, which has the unique advantages of high efficiency, safety, energy saving, environmental protection, long life, fast response speed and high color rendering index, which is of great significance to the energy saving of urban lighting.
What are the types of led street lights.
- Dusk to dawn led street lights. It is including a photocell device, turn on/off automatically on sunset/ sunrise.
- Low voltage led street lights. It is mainly with low voltage led power supply, such as DC12V, 24V DC, 48VDC. Most them are working with special places.
- Smart led street lights. It is the latest technology, easiest to be controlled by a computer.
Advantage of led street lights
The difference between LED street lights and conventional street lights is that the LED light source adopts low-voltage DC power supply, high-efficiency white light synthesized by GaN-based power blue LED and yellow light, which has high efficiency, safety, energy saving, environmental protection, long life, fast response speed, and high color rendering index. Unique advantages, can be widely used in roads. The outer cover can be made, high temperature resistance up to 135 degrees, low temperature resistance up to -45 degrees.
- Its own characteristics – unidirectional light, no light diffusion, to ensure lighting efficiency.
- The Led street light has a unique secondary optical design, which irradiates the light of the LED street light to the area that needs to be illuminated, further improving the lighting efficiency and achieving the purpose of energy saving.
- 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 LED street lamps 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 LED lamps). But, generally using 300W led street light to replace 1000W metal halide street light fixture.
- The light color rendering of LED street lamps 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 LED street lamps is above 75. From the perspective of visual psychology, to achieve the same brightness, the average illuminance of LED street lamps can be It is more than 20% lower than that of high-pressure sodium lamps.
- The light decay is small, less than 3% in one year, and it still meets the road requirements after 10 years of use, while the high-pressure sodium light has a large decay, which has dropped by more than 30% in about a year. Therefore, LED street lights are designed in terms of power usage. Can be lower than high pressure sodium lamps.
- The led street light has an automatic control energy-saving device, which can achieve the maximum possible power reduction and save energy under the condition of 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.
- Long service life: It can be used for more than 50,000 hours and provides three-year quality assurance. The disadvantage is that the life of the power supply is not guaranteed.
- High luminous efficiency: The use of chips of ≥100LM or more can save more than 75% of energy compared with traditional high-pressure sodium lamps.
- 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.
- Excellent heat dissipation control: The temperature is controlled below 45 degrees in summer, and passive heat dissipation is adopted, and the heat dissipation guarantee in summer is insufficient.
- 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.
- 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.
- LED does not contain harmful metal mercury, which will not cause harm to the environment when it is scrapped.
What are the famous LED street light factories in China?
It is the most important for you to get a reliable led street factory when you need to purchase any led street lights. Then what are the good led street light factories in China?
- NVC lighting
- FSL lighting
- OPPLE lighting
- GRNLED light.