LED lighting design based on three-party game of light source driving shell

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Innovation has long been a topic of discussion in various industries. Recently, the LED lighting industry has also set off an industry conference style named after new technologies and new products. Similar to such activities and conferences, the author also participated in several activities. The new technology and new products released can sum up the current development of LED lamps and draw three points: the volume is getting smaller, the function is more and more, and the technology is getting stronger. If the LED luminaire is dissected, it can be known that the lighting luminaire design is based on the three-party game of LED lighting part, driving control part and optical heat dissipation structure design.
In the LED light source to find the development of the light source LED lighting industry development is booming, LED lighting new technology emerges endlessly. However, it is difficult for LED lighting fixtures to enter the homes of civilians. The innovation of LED lamp bead packaging technology has led to the improvement of LED light efficiency every month. The price of LED lamp beads has been declining. The high-voltage LED technology has become more and more mature, and the heat of LED lamp cavity has become a reality.
COB integrated light source is widely used in LED bulbs, LED lamp cups, LED spotlights, LED downlights, LED ceiling lamps, LED bean gallbladder lamps, etc. It is one of the mainstream trends of LED lighting sources. For COB, the COB package has a shorter thermal path and a lower thermal resistance. Due to the high power integration, it is necessary to consider the efficiency degradation caused by the chip's own droop and waveguide effects. The chip structure is the key to improving efficiency. COB solves the problems that traditional discrete LED light sources can't solve in lighting applications. Because COB adopts integrated light mixing process, the illumination angle is large, the secondary optical design is relatively easy, and the luminosity directly incident on the human eye is reduced, so COB Flexible surface light source is an inevitable trend of indoor lighting.
High efficiency and no stroboscopic are the development trend of the technology to improve the power conversion efficiency, which can reduce the power of the whole lamp, which is to improve the overall lighting efficiency and save the heat dissipation design cost. There is no regulatory requirement for switching power supplies before power factor requirements, but LED luminaires already have hard targets. Reliability and longevity are also important parts of the current situation. There are also aspects of color temperature, brightness, and intelligence that are also in the future.
LED lighting drive experienced (1), isolated AC / DC: high cost, large volume, multi-component, electrolytic electricity is easy to break; (2) high-voltage linear non-isolation: low PF value, low efficiency, not suitable for ERP and Energy Star , small size, performance reduction, volume reduction to the limit; (3) high-order segmentation intelligent dimming: high PF value, high efficiency, no stroboscopic, full voltage, intelligent dimming, adapt to ERP instructions, up to the standard energy star; From this point of view, the development trend of LED lighting drive is no drive, optoelectronic integration.
Cancellation of the power supply can not be understood as the need for no drive, not to do not electricity, but to cancel some of the devices that hinder the life of the power supply, a new LED drive method, is also a new technology in the LED lighting industry in recent years.
The heat dissipation technology of the lamp housing is one of the key components of the LED lighting industry supply chain. The improvement of the radiator material, the innovation of the design and the improvement of the process are of great importance to the development of the industry. A good heat sink not only has good transmission and heat dissipation functions, but also requires excellent manufacturing and molding processes. At the same time, in the general environment where the radiators are generally reduced in price, there is still a need for cost-effective advantages.
Graphene is a kind of nano-new material with a single-layer sheet structure composed of carbon atoms. At present, the almost perfect planar atomic structure discovered by humans, its excellent electrical conductivity, thermal conductivity and heat dissipation performance will be the guide information in the future. The cornerstone of the revolution. The microscopic research on this product in the LED lighting industry has been very deep, but the related macro application has just begun. We do not study the carbon nanomaterial graphene, but hope that the graphene product can enter the application field of information products as soon as possible, especially in the field of LED general illumination. The use of graphene as a dielectric material to achieve thermal management of electronic information products is our only application direction.





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