Plastic radiator high brightness of bulb solar lamp ( Figure)

Ball bubble lights are commonly adopt aluminum alloy heat sink, the ball bubble lamp disadvantage is that the weight is heavy, but also for aluminum is conductive, so if using an isolation constant-current power supply is not easily through the CE, UL safety certification, etc. Because when doing the certification need to play more than 4000 v high voltage, the voltage is completely added to the aluminum base plate of a very thin layer of insulation cloth, aluminum plate usually of little more than 3000 v voltage, it will become the bottleneck of certified. And plastic heat insulation body pressure can easily exceed 4000 v. This makes the plastic ball steep light radiator at the same time using the isolation constant-current power supply is easy to through these security authentication. It is generally thought to heat dissipation good it has to use a metal heat sink. This concept is not correct. Although the thermal conductivity of metals is indeed better than plastic, but the main purpose of the shell radiator is scatter heat into the air. In the radiator thickness less than 5 mm, thermal conductivity, it is not the main problem. Radiator material coefficient of thermal conductivity as long as more than 5 w/mK, heat dissipation is given priority to with convection (at this time See figure 1) Have no difference, metal or plastic. And some good mixed with ceramic powder of thermal conductive plastics is very easy to do thermal conductivity is greater than 5 w/mK.

in figure 1. Coefficient of thermal conductivity is greater than 5 w/mK thickness less than 5 mm radiator cooling capacity is completely determined by the convection

in the radiation heat dissipation is superior to aluminum and plastic. So the plastic radiator used for ball steep light is a good choice.

Long Mao company developed the ball bubble lamp, the input power is 8 w, efficiency is as high as above 88%. Actual test showed that the cooling effect is satisfied. And it's also than the average weight of aluminum radiator ball steep light lamp to around 30%. Now the products are put into batch production.