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

Innovation has long been a topic of discussion in all walks of life. Recently, the LED lighting industry has also set off an industry conference in the name of new technologies and new products. Similar activities and conference writers have also participated in several, for the new technologies and new products released by these activities, three points can be summarized from the development of LED lamps today: smaller and smaller volume, more and more functions and stronger technology. If the LED lamp is dissected, it can be known that the design of lighting lamp is based on the tripartite game of LED luminous part, driving control part and optical heat dissipation structure design. Looking for developing light sources among LED light sources LED lighting industry is booming and new LED lighting technologies are emerging one after another. However, it is always difficult for LED lighting lamps to step into the homes of civilians. The innovation of LED lamp bead packaging technology has improved the LED luminous efficiency every month. The price of LED lamp bead is continuously decreasing. The high-voltage LED technology is becoming more and more mature. It is a reality to reduce the heat of LED lamp cavity. COB integrated light source is widely used in LED bulb, LED lamp Cup, LED spotlight, LED Downlight, LED ceiling lamp, LED bean lamp products, and is one of the mainstream trends of LED lighting sources at present. For COB, the COB Package has shorter thermal channels and smaller thermal resistance. Due to the high power integration, the efficiency reduction caused by droop and waveguide effect of the chip itself needs to be considered. Chip structure is the key to improve efficiency. COB solves those problems that traditional discrete LED light sources cannot solve in lighting applications. Because COB adopts integral light mixing process, the light emitting angle is relatively large and the secondary optical design is relatively easy, reduce the luminosity directly incident to human eyes, so COB flexible surface light source is an inevitable trend of indoor lighting. High efficiency and no stroboscopic are technological development trends. Improving the power conversion efficiency can reduce the power of the whole lamp, which is to improve the light efficiency of the whole lamp and save the Heat dissipation design cost. There is no legal requirement for switching power supply before power factor demand, but LED lamps have already had hard indicators in various countries. The improvement of reliability and service life is also an important part at present. There are also aspects of future demand for color temperature, brightness and intelligence. LED lighting drive has experienced (1) Isolated AC/DC: high cost, large volume, multiple components, electrolytic capacitor is easy to break; (2) High voltage linear non-isolation: low PF value, low efficiency, not suitable for ERP and energy star, small volume, reduced performance, reduced volume to limit; (3) High-order segmented intelligent dimming: high PF value, high efficiency, no stroboscopic, full voltage, intelligent dimming, adapting to ERP instructions, reaching Energy Star; From this point of view, the development trend of LED lighting drive is no drive, photoelectric integration. Canceling the power supply cannot be understood as not requiring driving, not to mention not requiring electricity, but canceling some devices in the power supply that hinder the service life, a brand-new LED driving mode, it is also a new technology that has aroused heated discussion in the LED lighting industry in recent years. Heat dissipation technology of lamp housing is one of the keys. As a key component of LED lighting industry supply chain, the improvement of radiator materials, design innovation and technology play an important role in the development of the industry. A good radiator not only needs good heat transmission and cooling functions, but also needs excellent manufacturing and molding process. At the same time, in the general price reduction of radiators, there is still a need for cost-effective advantages. Graphene is a new nano material with a single-layer flake structure composed of carbon atoms. At present, almost planar atomic structures discovered by human beings, its excellent electrical conductivity, thermal conductivity and heat dissipation will be the cornerstone of the new information revolution in the future. The micro-research on this product in LED lighting industry has been very in-depth, but the related macro-application has just begun. We do not study carbon nanomaterials graphene, but hope that graphene, a product, can enter the application field of information products as soon as possible, especially in the field of LED general lighting. Using graphene as a dielectric material to realize thermal management of electronic information products is our application direction.