The improvement of LED LED light source and its packaging technology has made great progress in brightness and range of LED explosion-proof flashlights and explosion-proof searchlights. Although the brightness of high-power explosion-proof LED glare flashlight lighting has increased, the huge heating problem caused by it has also become an urgent problem for explosion-proof flashlight manufacturers to solve. In particular, the heat problem caused by the rise of high-brightness portable explosion-proof flashlights in narrow spaces is particularly obvious. As a portable explosion-proof flashlight manufacturer, tank007 flashlight brand introduces the evolution path of portable explosion-proof flashlight heat dissipation.
The early low-power LED explosion-proof flashlight power is mostly a single chip, this mini explosion-proof flashlight due to the simple packaging, the heat generation is not large. However, in recent years, with the outbreak of strong demand in the explosion-proof market and the innovation of material technology, LED single-chip packaging has moved towards multi-chip packaging modules; The power of a single LED is increased to more than 1W, and the LED power of an explosion-proof searchlight like TANK007 even reaches 3W and evolves towards 5W or even higher, while multi-lamp explosion-proof lamps and lanterns continue to enter the market.
Multi-lamp bead high-power LED explosion-proof flashlight certainly brings the advantages of high lumens and long range, but the derived heating problem is much more prominent than that of low-power single-lamp explosion-proof lamps. The rapid export of high heat from the LED chip to the surrounding environment is a problem that every explosion-proof searchlight company must overcome. At present, the common practice is to attach the LED chip to a heat uniform sheet with solder or thermal paste, and reduce the thermal impedance of the package module through the heat vapor sheet, which is currently done by mainstream LED manufacturers such as Lumileds, OSRAM, CREE and Nicha.
Another effective way to improve the heat dissipation of explosion-proof flashlights is to use ceramic or heat pipe methods, which can also improve the heat dissipation of lamps, but because the high cost of these two materials is not something that general manufacturers can afford. The TANK007 explosion-proof searchlight engineers transfer thermal energy directly from the chip to the outside of the package housing by providing low thermal resistance but high conductivity and by means of chip attachment or hot metal methods.