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4Common problem

Optimization scheme of heat

At present, the high-power LED radiator mainly uses aluminum or aluminum alloy and other metal materials. It is understood that the heat dissipation effect of a LED radiator depends on its heat dissipation area, because the larger the heat radiation area, the greater the contact area with the air, the better the heat dissipation effect. In order to release heat into the air better, finned radiators are more widely used in the field of high-power LED.
At this stage, the concept of street lamp modularization is very hot, aluminum fin heat dissipation structure and plate surface of the junction is thin and small, non-thermal, conducive to heat dissipation, reduce light fading, in the work of the formation of small and large air convection space, that is, the "pull-back" effect, effectively solve the problem of heat and heat dissipation of lamps and lanterns.
In order to solve the heat dissipation problem of high-power LED lamps, a radiator named "hot column" was introduced. "This product mainly relies on copper Hengjie hot column to achieve rapid heat conduction to the integrated chip, and then combined with the self-designed aluminum radiator, can quickly dissipate heat. In structural modeling, the use of fin series, greatly reducing the light source temperature and radiator weight, rewriting the high-power radiator "heavy" history.
Aluminum alloy is used in the radiator, and the composite phase change heat dissipation technology of the main pushing groove group is adopted. That is to say, the convective heat transfer structure optimization design technology is used in the radiator fins, which can reduce the convective heat transfer resistance to the greatest extent and ensure that the radiator is always in the state of uniform temperature in the work. When contacting the heat source, micro-grooves compound phase change can occur in the radiator to strengthen the heat transfer process, so that the radiator can form a high-strength heat collection capacity and isothermal heat diffusion purposes, and then supplemented by excellent fins to achieve efficient heat dissipation.
Generally speaking, the industry for the choice of LED radiator materials, metal materials are more recognized, and plastic and ceramic materials although the concept of hot, but in the short term to form a large-scale promotion of the difficulty.
However, the industry believes that a good radiator must work hard on materials and cooling methods. For luminaire manufacturers, heat dissipation is only a part of the whole high-power lighting thermal management system, they would like to heat manufacturers to provide integrated heat dissipation solutions. Therefore, it is necessary to provide a solution to the overall heat dissipation according to customer needs, combined with the lighting requirements and shape of lamps and lanterns.