4.      Micro-channel cooling technology. Similar to synthetic micro-spraying, micro-channel cooling is also a new born cooling technology for super high power LED lights. In 1980s, Tuckerman and Pease introduced a kind of micro-channel cooling concept in their report. The thickness of this device is only 50um. Although this technology has been put forward theoretically, it is very difficult to be realized due to the relatively backward manufacturing level. 20 years later, Mr. Goodson and his co...Continue reading

Norlux is not doubt a good innovation in cooling technique for super high power LED lights. However, everything has its defects. Using PCBs with aluminum layers can improve the heat radiating performance and also increase the LEDs output power. But PCBs are not good heat conductors. Choosing right PCB materials is still a key point to LED cooling technique. Cooling design after PCBs: Heat generated by LED High Bay chips can be transmitted to PCBs. If we do nothing about it, having them...Continue reading

Recently, LED scientists have invented a new packaging structure for super high power LED lights: silicon based chips. Normal LED chip has a layer of epoxy resin on the top and use sapphire as base. Both of them are weak in thermal conductivity. Therefore, heat can only be transmitted though pins. It is very hard for heat to be radiated from both side (up and down), impacting a bad effect on chips function and reliabilities. In 2001, LumiLeds invented a new LED package structure: AlGalnN structu...Continue reading

The thermal transmission process of super high power LED lights: As for normal LED lamps, LED chips are the source of heat. Heat will be transmitted within the entire lamp in three ways: conduction, convection and thermal radiation, in which thermal conduction makes the biggest contribution. Thus when technicians design the cooling section for a certain lamp, they will attempt to improve the thermal conductivity of each section with it.     Feature above is a typical st...Continue reading

As for the fourth generation lighting source, LED is a great technical innovation in history. They have many advantages: high light efficiency, long life, fast respond and environmental friendly. However, completely replacing traditional lighting products is still a long journey for LEDs due to technical difficulties or maybe technical bottlenecks. Among various technical bottlenecks, cooling system is always a big trouble for LED manufacturers. Nowadays, with the rapid development of LED techni...Continue reading