Led street lamp head introduction

The LED street lamp is a semiconductor illumination lamp with a light-emitting diode as a light source. Because it is a solid-state cold light source, it has the characteristics of environmental protection, no pollution, low power consumption, high luminous efficiency and long service life. Street lamps are an important part of urban lighting. Traditional street lamps often use high-pressure sodium lamps. The low-efficiency of high-pressure sodium lamps as a whole has caused huge waste of energy. Therefore, the development of new high-efficiency, energy-saving, long life, high color rendering index, Environmentally friendly streetlights are of great significance for urban lighting energy conservation. Today, you can learn about LED street lights.

Technical indicators

At present, LED lighting technology is becoming more and more mature, and the efficacy of high-power LED light source has reached more than 100LM/W, which makes energy-saving transformation of urban street lamp head lighting possible. LED streetlights, especially high-power LED streetlights, are hitting the traditional streetlight market at a rapid rate.

The standard for LED streetlights is generally an average illumination of 0.48 for uniformity of road surface illumination. The spot ratio is 1:2, which is in line with road illumination. (The actual 1/2 center spot reaches 25 LUX, the 1/4 center light intensity reaches 15 LUX, the lowest light intensity of 4 lux at 16 meters, and the overlapping light intensity is about 6 LUX.

At present, the market lamp head lens material is an improved optical material, the transmittance is ≥93%, the temperature is -38-+90 degrees, and the anti-UV ultraviolet yellowing rate is unchanged for 30,000 hours. It has very good application prospects in new urban lighting.

The LED street lamp heat dissipation technology is generally used as a heat conduction plate. It is a 5mm thick copper plate. It is actually a temperature equalization plate, which heats the heat source. It also has a heat sink to dissipate heat, but the weight is too large. The weight is very important in the street lamp head system. Generally, the street lamp head is six meters high. If it is too heavy, the danger will increase. Especially in the case of typhoons and earthquakes, accidents may occur. Some domestic manufacturers adopt the world's first needle-shaped heat dissipation technology. The heat dissipation efficiency of the needle-shaped heat sink is much higher than that of the traditional chip heat sink, which can make the LED junction temperature lower than the ordinary heat sink by 15 ° C or more, and the waterproof performance ratio Ordinary aluminum radiators are better, and they are also improved in weight and volume.

advantage

1, the characteristics of the LED street lamp itself - the unidirectional nature of light, no light diffusion, to ensure light efficiency;

2. The LED street lamp head has a unique secondary optical design, which illuminates the area of ​​the LED street lamp to the required illumination area, further improving the illumination efficiency to achieve energy saving purposes;

3, LED light source efficiency has reached 90-110LM / W, and there is still a lot of room for development, the theoretical value of 250lm / W. The luminous efficiency of the high-pressure sodium lamp increases with the increase of power. Therefore, the overall luminous efficacy LED street lamp head is stronger than the high-pressure sodium lamp; (this overall luminous effect is theoretical, in fact, the luminous efficiency of the high-pressure sodium lamp above 250W is higher than that of the LED ).

4, LED street lamp light color rendering is much higher than high-pressure sodium lamp, high-pressure sodium lamp color rendering index is only 23, and LED street lamp head color rendering index reached 75 or more, from the visual psychological point of view, to achieve the same brightness, LED street lamp head The average illuminance can be reduced by more than 20% compared with the high pressure sodium lamp (refer to the British standard of lighting);

5. The light decay of the LED street lamp head is small. The light decay of less than 3% in one year still reaches the road use illumination requirement in 10 years, while the high-pressure sodium light decays, which has dropped by more than 30% in a year.

6, LED is a low-voltage device, driving a single LED voltage is a safe voltage, the series of single LED power is 1 watt, so it is a safer than a high-voltage power supply, especially suitable for public places (for example: street lights Head lighting, factory lighting, automotive lighting, civil lighting, etc.)

7, long life: can use more than 50,000 hours, the shortcoming is that the life of the power supply is not guaranteed.

The above is a small knowledge of the LED street lamp heads that you have compiled for you. If you want to know more information, you can pay attention to the official website of our home.