The problems in the design of LED street lamp heat diss […]
The problems in the design of LED street lamp heat dissipation include: the heat dissipating fin area is arbitrarily set, and the heat dissipating fin arrangement is unreasonable. The arrangement of the heat dissipating fins of the lamp does not take into account the use of the lamp, affecting the effect of the fin and emphasizing heat conduction. Link, neglect convection cooling, although many manufacturers have considered various measures: heat pipe, loop heat pipe, thermal grease, etc., but did not realize that heat ultimately depends on the external surface area of the lamp to dissipate. The balance of heat transfer, if the temperature distribution of the fins is severely uneven, will cause some of the fins to have no effect or limited effect.
Heat-dissipating high-power LED street light fixtures. The purpose is to solve the heat dissipation problem of high-power LED lamps, and propose an air convection heat-dissipating high-power LED street lamp, which comprises a lamp head assembly, a lamp radiator assembly and a lamp tail assembly, and the lamp radiator assembly is an arc-string cylindrical housing. Open at both ends, the two sides of the arc cylinder are the elevation, and the façade is also provided with array through holes. In the inner cavity of the arc-string cylindrical housing, there are 4 to 10 axially arranged and arc-column and chord surfaces. The fixed vertical rib heat conducting plate, the vertical rib heat conducting plate and the two façades on both sides of the arc string cylindrical shell are also provided with array through holes, the vertical rib heat conducting plate and the two sides of the arc string cylindrical shell The surface forms 5 to 11 heat dissipation channels for the flow of hot air in the radiator assembly. The utility model has the advantages that the heat dissipation body has a plurality of heat dissipation channels through which the hot air flows, and the vertical rib heat conduction plate also serves as a heat dissipation surface, the heat exchange surface is increased, and the heat discharge efficiency is high.