Which kind of LED lamps and lanterns of radiator is better?

At present, in addition to the main categories of LED lamps and lanterns radiator: die casting aluminum radiator, aluminum radiator, cold forging aluminum radiator, outside, there are more than ten types of radiator, some kinds of only to be eliminated by natural selection. Might as well make them here with gather together to have a discussion about hero, through a comparative analysis of their features and, check out why to be eliminated, a foothold and better and why? 1, aluminum radiator fins which is the more common way of traditional heat dissipation, use aluminum radiator fins as a part of the shell to increase the cooling area. Specific also contains die-casting aluminum, aluminum radiator. Die casting aluminum radiator is for a long time in the field of light fittings, at present for the LED heat dissipation components are also popular, but its defect is obvious, because of the heat dissipation thin wings can't do, it is difficult to make the heat dissipation area; Car aluminum radiator ( Aluminum machining) , usually in the majority with sunflower shape appearance, material is 6063 more, also more popular; 2, thermal plastic shell in the plastic shell injection molding filling thermal conductive materials, increase the plastic shell heat conduction and heat capacity, but the heat dissipating performance dare not flatter really, and heat resistance of some plastic material is not enough high, result in this kind of radiator is eliminated by the market gradually. 3, surface radiation heat treatment in the lamp shell surface radiation heat treatment, simple is daub radiation heat paint, can be taken away from the lamp shell surface heat radiation way, there are some manufacturers use this cooling way. 4, air fluid mechanics using the lamp shell shape, make air convection, this is a low cost way of strengthening cooling, there are a lot of manufacturers will take this way of heat combined with fins heat dissipation, to foster strengths and circumvent weaknesses. 5, fan lamp shell internal reinforced with long life high efficiency fan heat dissipation, low cost, good effect. Fan is more troublesome, but want to change also does not apply to outdoor, this design so far has been relatively rare. 6, heat pipe using heat pipe technology, heat from the LED chip guide to shell the cooling fins. In the large lamps and lanterns, such as street lamps is a common design. 7, liquid ball bubble using liquid bubble packaging technology, the thermal conductivity of high transparent liquid filled in the ball bubble lamp body. This is in addition to the reflective principle, only use smooth thermal conductivity, heat dissipation of the LED chip technology. 8, lamp holder used in home of small power LED lights, often using the internal space of the lamp holder, the driver circuit part or all of the heat into. So that you can use like screw base has a large lamp holder of the metal surface heat dissipation, because lamp holder is contact base metal electrode and the power cord. So part of the heat can be derived. 9, the use of high thermal conductive ceramic lamp shell heat dissipation of the purpose is to reduce the working temperature of the LED chip, due to the LED chip expansion coefficient with the metal thermal conductivity, heat dissipation material expansion coefficient difference is very big, can't be directly LED chip welding, to avoid high and low temperature thermal stress damage LED chip. New high thermal conductive ceramic materials, thermal conductivity is close to aluminum, expansion system can be coordinated to be synchronous with the LED chip. So it can be heat conduction, heat integration, reduce the thermal conductivity of the intermediate links. 10, integration of cold forging radiator: integration of cold forging forming technology, is one of the breakthrough of LED lamps and lanterns of the cooling technology. The original terminal block design, the use of safe, is one of the unique bright spot. And the appearance of cold forging aluminum process selection, on the premise of guarantee the cooling function, also can meet the personalized color processing needs of customers. The coefficient of thermal conductivity of thermal conductivity contrast: die casting aluminum for 98. w/m. K, aluminum car for 180. w/m. K, cold forging aluminum for 226. w/m. The coefficient of thermal conductivity of k, cold forging aluminum is die-casting aluminum. Three times, is a 1 car aluminum. 26 times. Structural differences in contrast: car aluminum radiator processing is more convenient, but structure has obvious disadvantages: thermal conductive plate need to assemble, another cause radiator, heat resistance and heat conduction plate between the gap is very big, thus greatly reduces the performance of thermal conductivity; And cold forging radiator is integrated structure, LED aluminum plate between the radiator and basic to achieve seamless docking, greatly improving the thermal performance.
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