LED lamp light source heat and light distribution knowledge is introduced

When it comes to LED light source, the main is heat and light distribution. Start with heat, LED street lamp light source, cooling pattern mainly has: thermal radiation, heat conduction, heat convection and natural air cooling. Specifically the LED light source produced by heat conduction to the aluminum radiator is, however,

when it comes to LED light source, the most important thing is that heat and light distribution. First of all, from the Angle of heat dissipation, LED street lamp light source, main cooling ways: thermal radiation, heat conduction, heat convection and natural air cooling. Specifically, the heat generated by the led light source is conductive to the aluminum radiator, aluminum radiator area can then be used for heat dissipation and natural air cooling radiation. When it comes to the light distribution, mainly lens and reflective cup. First of all, a lens: the lens is actually the secondary light distribution. Lens according to the material divided into silicone lens, lens, poly (methyl methacrylate polycarbonate lens and glass lenses. Due to the high temperature resistant silicone lens performance is good, small size, diameter of 3 - 10 mm, encapsulation on the led lamp bead directly. Our lens is made of polymethyl methacrylate, because this material has good temperature resistance, and is the best quality big lens. Computer camera production efficiency is high, but the light transmittance is a bit poor, temperature cannot exceed 110 degrees. ； In spite of the high temperature resistant glass lenses, but they are big volume, heavy weight, fragile, and high production cost. According to the application, the lens can be divided into primary and secondary lens lens. Main lens encapsulation on the light emitting diode chip directly, but the light distribution point of view is as high as 180 degrees of multifunctional lamp posts. ； Secondary lens light Angle can be adjusted. For reflective cup, no lens can very well, although the price is low, but the difference of temperature resistance, and light emitting relatively scattered.