LED Lighting Provides A New Space For Innovative Design
With the incandescent, fluorescent, energy-saving lamps have been out of the lighting market, LED lighting and LED lighting lighting the rapid development of the wave of lightning to sweep the world lighting market, LED industry chain so flourish. LED lights continue to improve the brightness, the price gradually decreased; HVLEDs and flip-chip LED development of LED lighting new application technology; LED drive power chip continues to introduce new, integrated features more cost-effective, more convenient application; plastic aluminum and high Thermal plastic radiator for the new generation of LED light source and lighting provides a new space for innovative design.
Indoor LED light source and lighting is bound to a wide range of consumer electronics products will be mass production, with blue ocean market. As the traditional lighting and lighting fixtures reserved for the LED drive power space is very small, so LED lighting and lighting of the lamp drive power must be done very small, drive the power chip requires a high degree of integration of performance to single-chip-based, which requires The entire drive power scheme is not only very simple, and low cost; application circuit requires less peripheral devices, requiring LED drive power chip + peripheral parts of the total less than 15, or even less than 10. LED power supply circuit using fine compact transformers, inductors, low-level electrolytic capacitors, and even power supply circuit does not require electrolytic capacitors, inductors or transformers.
LED lighting is currently one of the biggest technical problems is the cooling problem, poor heat dissipation lead to LED drive power, electrolytic capacitors have become the further development of LED lighting fixtures, LED light source premature aging reasons.
Only as soon as possible to export heat in order to effectively reduce the temperature inside the LED lamps in order to protect the power supply is not in a long-term high temperature environment, in order to avoid the LED light source due to long-term high temperature work and premature aging.
Because the LED light source itself is not infrared, ultraviolet light, so the LED light source itself does not radiant cooling function, LED lighting cooling way only with the LED lamp beads plate close combination of heat sink to derive heat. Radiator must have the function of heat conduction, thermal convection, heat radiation.
Any radiator, in addition to the heat can be quickly transferred from the heat source to the surface of the radiator, the most important thing is to rely on convection and radiation to heat the heat to the air. Thermal conductivity only solves the heat transfer path, and thermal convection is the main function of the radiator, heat dissipation performance is mainly determined by the ability of heat dissipation area, shape, natural convection strength, heat radiation is only auxiliary role. In general, if the heat from the heat source to the radiator surface distance is less than 5mm, then as long as the material thermal conductivity is greater than 5, the heat can be derived, the rest of the heat must be dominated by thermal convection.
Most LED lighting sources still use low voltage, high current LED lamp beads, because the work of high heat, you must use a higher thermal conductivity of aluminum. Usually die-cast aluminum radiator, extruded aluminum radiator, stamping aluminum radiator. Die-cast aluminum radiator is a pressure casting parts of the technology, the liquid zinc copper and aluminum alloy poured into the die-casting machine feed port, die-casting machine die-casting, casting a pre-designed mold limited shape radiator.