The rapid rise in temperature indicates the coming of hot summer. In the face of hot and hot weather, human beings have rich cooling means such as turning on air conditioners, blowing fans and drinking cold drinks. For large screen display products that will also cause irreversible damage due to high temperature, but still need 7x24 hours to "stick to their posts", what are the ways to cool and dissipate heat? As an important product of indoor display large screen, what is the heat dissipation and temperature control mechanism of intelligent laser screen?
Before talking about the heat dissipation and temperature control of the intelligent laser screen, first of all, it should be clear that due to the good heat dissipation and temperature control of the intelligent laser screen, the laser screen is a mature body cooling screen machine, and the temperature on the screen surface will not rise due to the long-time startup of the equipment. As a user, standing in front of the laser screen will not feel the heat wave like standing in front of the LED screen. From beginning to end, it is natural and comfortable to touch, control and use the screen in front of the laser screen.
To explore the reasons for the cold screen of laser screen, we should first look at the source - luminous light source. As the laser itself is a new generation of cold light source, the light emitted by the laser projector will not radiate heat to the air, nor will it produce additional invisible light such as infrared and ultraviolet rays. It has higher photoelectric conversion efficiency and can avoid being used for a long time, Like the incandescent lamp, it causes the air around the light source to become hot, which increases the temperature of the whole space, so as to eliminate the possibility of high temperature burning of the laser screen at the source.
Second, although the laser itself does not generate heat, the laser projector and surrounding related equipment as a laser generator will inevitably generate heat during operation. If these heat cannot be discharged in time, it will also affect the long-term use of the equipment;
Therefore, for the heat dissipation of this part of equipment, the laser screen is equipped with a variety of mature heat dissipation devices and structures such as heat dissipation fan, heat dissipation fin and heat dissipation copper tube on the core hardware equipment such as light source, fusion device and content host inside the box. Through the combined application of these different heat dissipation devices, the heat dissipation efficiency of the main core equipment of the laser screen box is higher, It can effectively help these equipment transfer heat from the inside of the equipment to the air of the box during operation.
Among them, the cooling fan can accelerate the circulation speed of the air around the key heating parts and blow the radiation heated air away from the surface of the heating parts; However, the laser projector with high power and high heat dissipation pressure is awesome, and the general air cooling may not be very powerful. Therefore, the laser screen adopts the upgrading scheme based on the cooling of air and air cooling mode.Several temperature sensors are built in the important heat dissipation components inside the projector. By monitoring the temperature value for automatic analysis and processing, the variable speed control of the heat dissipation fan inside the machine is realized (when the temperature is low, the fan speed is slightly slow; when the temperature is high, the fan speed is accelerated), which ensures that the internal optical components are in a constant temperature environment and ensures the stable performance of the projector.The heat dissipation fin itself is composed of multi-layer lightweight aluminum and copper materials. The heat dissipation fin with multi-layer structure has a larger surface area, and the larger surface area means a larger heat dissipation area and higher heat dissipation efficiency. Therefore, the heat dissipation fin with multi-layer lightweight structure can conduct heat faster and more efficiently.
For the heat dissipation of the laser screen, the heat dissipation fins are usually combined with the liquid cooling heat dissipation to ensure the stable and long-term operation of the projector. The characteristics of liquid cooling heat dissipation are that the cooling water channel is configured on the equipment, multiple groups of array heat dissipation fins are arranged on the cooling water channel in series, and the rear of the multi-layer structure array fins is in contact with the back of the laser light source, So as to dissipate heat. The efficient heat conduction and heat dissipation mode of liquid cooling can not only greatly reduce the pressure of air cooling heat dissipation, but also reduce the starting power of air cooling fan as much as possible, so as to effectively reduce the fan noise.
Thirdly, for the whole closed system of the box, hisan laser screen makes full use of the rear projection space, takes active cooling measures and reasonably arranges the ventilation equipment. The core scheme is to design multi-channel independent ventilation pipes in the box, and the efficient independent ventilation pipes introduce cold air and discharge hot air driven by the ventilation fan, Realize the rapid ventilation cycle of cold and hot air inside the box to help the heat inside the box to be discharged quickly.Through high-efficiency air circulation, the hot air in the box can be discharged in time, and the temperature in the laser screen box can be maintained at about 35 for a long time, which eliminates the possibility of increasing the surface temperature of the laser screen caused by hot air burning the screen, so as to help the laser screen realize the working state of the body cooling screen.Above, with the joint action of laser cold light source, active / passive cooling and other heat dissipation methods, when the laser screen is in normal use, the surface temperature of the screen is maintained at the body comfortable temperature of 27 and 8 degrees, the touch screen is not hot, and it is not hot near the screen. For users, it is convenient for them to carry out more fine fingertip touch operation on the screen, and for viewers, they can watch it from a close distance Feel and experience a more delicate picture effect.