Home > News > Content
LED Lighting Further Development
- Sep 22, 2017 -

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 the long-term high temperature environment, in order to avoid the LED light source due to long-term high temperature work and premature aging.

Because LED light source itself is not infrared, ultraviolet, LED light source itself does not have radiation cooling function, LED lighting cooling path can only be used with 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, the heat dissipation performance is mainly determined by the capacity of the heat dissipation area, shape and natural convection strength, and the heat radiation is only auxiliary function. In general, if the heat from the heat source to the radiator surface distance of 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 (VF = 3.2V), high current (IF = 200-700mA) 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 mold design in advance shape of the radiator.