Indoor LED display digital signage heat dissipation method_led display manufacturer Huaze Optoelectronics
In the past 2017, the LED display industry ushered in an explosive period, especially the splicing industry. Because it can supplement the large screen market of 120 inches or more and the blank space of creative space that is difficult to reach by conventional single-screen digital signage displays, it has been sought after by all . More and more digital signage companies have begun to make efforts to splice displays, and the corresponding cloud splicing system has become the mainstream for a while. However, at the same time, in the digital signage market, a mixture of 'parametric parties' and high-quality products has also begun to appear, making it difficult for the public to make a decision. After these parameters, what are the points we need to pay attention to? With the development of the LED display industry, small, ultra-thin, and light have become important directions for the development of the industry. With the miniaturization and thinning of equipment, without large-scale cooling fans and water-cooled heat dissipation structures, how can light and thin machines achieve effective heat dissipation? In turn, the damage of high heat to its parts can be reduced. For indoor LED display screens, it seems to reduce some hazards due to the absence of the threat of sunlight. However, correspondingly, indoors have higher requirements for product lightness and thinness, and the available heat dissipation convection space around the product is limited. These factors make it not easy for indoor equipment to dissipate heat. Today's LED display equipment heat dissipation is divided into several ways such as metal heat sinks, heat pipes, fans, and water cooling. The first two are passive heat dissipation. The latter two are active heat dissipation. The so-called active heat dissipation and passive heat dissipation are mainly defined by the need to provide additional power to perform heat dissipation. Heat sink is the most typical passive heat dissipation element. In addition, heat pipes are also passive heat dissipation elements that have become increasingly popular in recent years. In the field of heat dissipation, high thermal conductivity is still the main direction of technological development. Metals with good properties, light weight, and easy processing, such as aluminum or copper, and silver with better thermal conductivity are too expensive and usually not used. In our daily use, it will also be supplemented with thermal paste, such as the 'silica gel' inside our common computers. Heat pipes are another more common passive cooling solution. The light weight and fast uniform temperature characteristics make it have excellent heat conduction characteristics. The application range of heat pipes is quite wide, and it was first used in the aerospace industry. Nowadays, it is widely used in different application fields such as various heat exchangers and coolers, playing the role of heat transfer and heat dissipation. The most common active type of heat dissipation is the use of air-cooled heat dissipation from the fan blades driven by the motor. In addition to the most common computer casings and power supplies, they are combined with heat sinks and heat pipes to form a composite heat sink. It is widely used in important computer processors such as display cards and central processing units. Water-cooling heat dissipation refers to the use of liquid to forcefully circulate the heat of the radiator under the drive of a pump. Compared with air-cooling, it has the advantages of quietness, stable cooling, and less dependence on the environment. The heat dissipation performance of a water-cooled radiator is directly proportional to the flow rate of the cooling liquid (water or other liquid), and the flow rate of the cooling liquid is related to the power of the water pump in the refrigeration system. Moreover, the heat capacity of water is large, which makes the water-cooled refrigeration system have a good heat load capacity. It is equivalent to 5 times of the air-cooled system, and the direct benefit is that the operating temperature curve of the related components is very flat. For example, a system using an air-cooled radiator will have a temperature spike in a short time when running a program with a heavy CPU load, or may exceed the CPU warning temperature, while a water-cooled heat dissipation system has relatively small thermal fluctuations due to its large heat capacity Much. Nowadays, in addition to the above four heat dissipation methods, indoor LED display screens also have some LED display screens that realize heat dissipation with their internal special structure, but the effect is limited. The ultra-thin and flexible innovations that face increasing demand are largely related to the 'effect' and 'foundation' of heat dissipation design in the engineering direction. Without good thermal technology and thermal material research, there would be no development soil for ultra-thin digital signage.