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LED road light development matters needing attention

Views:322     Author:Site Editor     Publish Time: 2021-09-22      Origin:Site


LED road light refers to the street light made of the LED light source, which has the unique advantages of high efficiency, safety, energy-saving, environmental protection, long life, fast response time, and high color rendering index, which is of great importance to urban lighting energy saving. So LED road light development needs to pay attention to what matters? Let's take a look at it together next.


This is the content list:

  • LED road light luminous flux improvement also need from the high-power LED epitaxial technology, chip technology, and another basic level to further enhance

  • LED road light with optimized design to improve the quality of LED use


LED road light luminous flux improvement also need from the high-power LED epitaxial technology, chip technology, and another basic level to further enhance

Domestic and foreign production of LED road light white LED method is to first place the LED chip on the substrate of the package, bonded with gold wire, and then coated with phosphor around the chip, and then encapsulated with epoxy resin. LED road light from the LED chip emitted blue light to the surrounding phosphor layer by some scattered reflection, absorption, and finally to the outside. LED road light chip flip-flop technology can get more effective light than the traditional LED chip packaging technology. However, if the reflective layer is not added below the electrode of the LED road light chip to reflect the wasted light energy, it will cause about 8% of light loss. The light from the side of the LED road light chip must also be reflected by the heat-sinking mirror to increase the light output of the device. And in the flip-chip sapphire substrate, an epoxy resin light guide surface should be added between a layer of silicone material to improve the refractive index of the chip light. After the improvement of optical packaging technology can significantly increase the light output rate of high-power LED road lights.


LED road light with optimized design to improve the quality of LED use

Therefore, the study of high-power LED road light LED light source secondary optical light distribution design, to meet the needs of large-area light projection and floodlighting distribution is particularly urgent. Through the secondary optical design technology, the design of an additional reflective cup with multiple optical lenses and aspheric light output surface can improve the light extraction efficiency of the device. 


Traditional light source irradiation direction is 360 °, LED road light to rely on reflector will reflect most of the light to a specific direction, only about 40% of the light is directed through the glass cover to the road, the other light is through the LED road light reflector and then projected out of the lamp, LED road light reflector efficiency is generally only 50% to 60%, so about 60% of the light output is in the glass cover. So there are about 60% of the light output in the LED road light, is in the loss of 30% ~ 40% and then projected onto the road. A large part of the light output of the light source is limited to the LED road light internal heat consumption. The vast majority of the light of the LED light is front light, can achieve > 95% of the light efficiency, which is one of the important characteristics of LED distinguished from other light sources, if this feature cannot be well used, will make the advantages of LED greatly reduced. Most high-power LED road light due to multiple LED chip assembly, to shine so many light sources to different directions, we give full play to the LED road light chip overall package characteristics, using lenses to solve, through optical design, according to different needs, equipped with the different convex curve, rely on the lens to distribute light to different directions, to ensure that the light angle of the large Once the lens is set, the light distribution characteristics of the same LED road light will be consistent under the premise that the production process is guaranteed. It is completely possible to make the LED road light reach the batwing light type required by the road lighting standard through many trials production and continuous experience. Tunnel lights, street lights, and general lighting have reached the lighting requirements of their respective application sites.


CECEP Latticelighting is a high-tech company focusing on LED energy-saving lighting applications and providing intelligent lighting solutions. If you are interested in LED road lights, you can contact us, our website is www.latticelighting.com.


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