Careful "heat" to cool the projector – the projector, office equipment – office supplies industry
Now in their daily learning, work, life, Projector Used more and more frequent. Projector to work long hours, and if we will hand on the back of the projector's cooling fans Department, will obviously feeling a hot heat emitted continuously. As the light projector are sophisticated mechatronic products, the temperature sensitive internal components, combined with the complexity of the internal structure, its own more stringent requirements for temperature, so the projector with the same number of components involved in computer cooling problem. Moreover, with the portable, ultra-portable projector needs in the gradual expansion of the projector continuously hit new low weight, compact form growing trend continues. These are all on the projector cooling technology have higher requirements.
Cooling in introducing new technology before the first projector we look at the source of heat generation. We all know that the projector from the projection imaging system generally and optical amplification system components, the signal usually through the projector projection imaging technology, special treatment, into video signals, then through the projector in the amplification of the optical amplification system, then the projection signal can high-quality, high-definition to be projected on a big screen projector. In the projector when the projector input, need high brightness, in order to ensure to achieve such a high brightness output, the projector must be through the use of high-power light sources to achieve. After a long work, certainly in the high heat generated inside the machine, the heat gathered in a projector only a fist-sized space, so such a concentrated heat, such a strong power is bound to spread outside the projector. In addition to the heat generated by the projector light source, the projector Power supply Will also work with great heat.
Furthermore, in order to achieve a high brightness projector, one must use more powerful projection lamp, the projector now widely used metal halogen bulb, UHE lamp, UHP three light bulbs, these bulbs in common characterized by high heat, heat the system requirements on the projector high, given the light bulb through the optical system converged, converged on the LCD panel, even after the UV / IR coating, cold-filtered infrared reflector and other measures but there is still a lot of heat concentrated in the LCD panels, polarizers and other small area of the device. In short, the projector's heat comes mainly from the imaging system within the projector, the projector and the projection of power part of the bulb, which brings together the three parts of the heat is very large, if not in time to the heat emission from the projector quickly open, then the excess heat generated within the projector will make a very high temperature, high temperature case, the projector's efficiency will be low, and work long hours go on, the projector will be greatly shortened the life of .
Projector bulbs, imaging systems, power supply and so the heat generated in the narrow space inside the machine together, producing a high temperature not only affect the normal use of the projector, and will shorten the life of internal components different sources of heat to the projector location and extent of harm is not the same. Imaging system distributed by the projector out of a lot of heat will lead to temperature increases within the projector, while the inner wall of the quartz projector bulb occurs at high temperatures through the phenomenon of loss, resulting in white spots, due to loss of large blocks of light through the Department to abnormal temperature rise in the local area, thereby causing further loss through the region, so that the rapid decay of brightness, and is likely to lead to lamp explosion. In addition, the chip board inside the projector's own physical nature of the work it does not allow the temperature is too high, other optical components once the temperature exceeds the tolerance level can also cause damage to optical components. The projector part of the distribution of power out of the heat causes the power supply part of the temperature is too high, this will cause the projector internal power supply electrolytic capacitors dry up, leading to power the projector power switch burned.
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