In general, the heat source of LED fluorescent tubes generated by the work of its total power consumption is about 70%,and the heat only generated when light can not be exported if it will make the surface of the LED junction temperature is too high, thereby affecting the product life cycle, light efficiency and stability.
High-power LED fluorescent tubes failure is not the main reason for long-term work, reduce the lumen is an important way to improve its cooling. Most LED fluorescent tubes failure can not be used to meet the requirements. The experimental data show that the 1200 hours of light after the decline of light, the best of 8%, the worst 26%, an average of 14% starting from a system of heat transfer theory, we can use the means of heat transfer: conduction, convection, radiation and phase change heat transfer. Therefore, in heat or cooling problems, we can take measures that are visible and limited.
LED fluorescent tubes is a one-way current-mode solid-state semiconductor light emitting device, which is a branch of traditional diodes, with diode characteristics for lighting to high precision current regulation and current ripple should be stable, thus ensuring there is no flashing LED fluorescent tubesand glare. Dimensionless heat generated by high-power LED fluorescent tubes source with constant current drive size is directly related to the design. If the constant current driver design is not good, and effective power is not high and heat is very high, what cooling methods do not fundamentally solve the LED lifetime is not enough length of the question. Good design is a fundamental constant current drive method, can minimize heat dissipation, and a variety of cooling methods is only a temporary solution for the problem.
