Magical Application of Thermal Conductive Phase Change Materials in LED Products
Magical Application of Thermal Conductive Phase Change Materials in LED Products
As we all know, LED lamps have become the darling of the lighting industry because of their energy-saving and super-bright characteristics. But it generates a lot of heat when it works. If it can't dissipate heat, as soon as the temperature of the LED chip rises, the brightness will be affected and the life will be greatly reduced. According to research, every 10℃ increase of LED chip will reduce its luminous efficiency by about 3%-5%, and the internal structure of the chip will accelerate aging, greatly shortening the service life of LED lamps. So how to solve this heat dissipation problem?
Thermal conductivity phase change material is a kind of material that can change shape with the change of temperature and absorb or release a lot of heat. It is solid at room temperature, and the thermal conductivity phase change material is particularly convenient to install. Just like a hard mat, it can be stably placed between the LED chip and the radiator. When the LED starts to work, the working temperature starts to rise. When the temperature reaches 50-60℃, the thermal conductivity phase change material begins to soften and flow, filling the uneven gullies and gaps between the chip and the radiator, so as to reduce the thermal resistance. You should know that air is a poor conductor of heat, and these gaps will seriously hinder the conduction of heat. However, with such changes in thermal conductivity phase change materials, the thermal resistance will be instantly reduced and the heat dissipation efficiency will be greatly improved. Generally, the thermal resistance of traditional heat conducting materials is 0.5-1.0℃ in/w, while the thermal resistance of phase change materials can be reduced to 0.1-0.3℃ in/w, which can improve the heat dissipation efficiency by 30%-50%. Compared with traditional heat conducting materials, it has obvious advantages.
In LED products, how is the thermal conductivity phase change material specifically applied? In the LED lamp, there are many gaps between the bottom surface of the radiator and the surface of the LED chip. When the lamp is started, it will absorb heat, slow down the temperature rise of the LED, turn into liquid when it reaches the phase transition temperature, and quickly conduct heat to the radiator and emit it. When the light is turned off, it changes from liquid to solid, releasing heat. This can prolong the life of LED lamps.
In some high-end LED spotlights, the service life of lamps is increased from 20,000 hours to more than 30,000 hours after using phase change materials with thermal conductivity. In the LED display screen, thermal conductivity phase change materials can also be used to quickly dissipate heat, ensuring that each pixel can stably emit light and present a clear and colorful picture. Especially for outdoor large LED display screen, in the face of long-term sun exposure and high temperature environment, thermal conductivity phase change materials can effectively maintain the stable operation of the display screen, and avoid problems such as uneven color blocks and decreased brightness. Thermal conductive phase change materials have indeed brought revolutionary changes to the heat dissipation of LED products, making LED products have better performance and longer life. I believe that with the continuous development of technology, it will shine in more LED products and bring us better lighting and display experience!
Thermal conductivity phase change material is a kind of material that can change shape with the change of temperature and absorb or
release a lot of heat. It is solid at room temperature, and the thermal conductivity phase change material is particularly convenient to install. Just like a hard mat, it can be stably placed between the LED chip and the radiator. When the LED starts to work, the working temperature starts to rise. When the temperature reaches 50-60℃, the thermal conductivity phase change material begins to soften and flow, filling the uneven gullies and gaps between the chip and the radiator, so as to reduce the thermal resistance. You should know that air is a poor conductor of heat, and these gaps will seriously hinder the conduction of heat. However, with such changes in thermal conductivity phase change materials, the thermal resistance will be instantly reduced and the heat dissipation efficiency will be greatly improved. Generally, the thermal resistance of traditional heat conducting materials is 0.5-1.0℃ in/w, while the thermal resistance of phase change materials can be reduced to 0.1-0.3℃ in/w, which can improve the heat dissipation efficiency by 30%-50%. Compared with traditional heat conducting materials, it has obvious advantages.
In LED products, how is the thermal conductivity phase change material specifically applied? In the LED lamp, there are many gaps between the bottom surface of the radiator and the surface of the LED chip. When the lamp is started, it will absorb heat, slow down the temperature rise of the LED, turn into liquid when it reaches the phase transition temperature, and quickly conduct heat to the radiator and emit it. When the light is turned off, it changes from liquid to solid, releasing heat. This can prolong the life of LED lamps.
In some high-end LED spotlights, the service life of lamps is increased from 20,000 hours to more than 30,000 hours after using phase change materials with thermal conductivity. In the LED display screen, thermal conductivity phase change materials can also be used to quickly dissipate heat, ensuring that each pixel can stably emit light and present a clear and colorful picture. Especially for outdoor large LED display screen, in the face of long-term sun exposure and high temperature environment, thermal conductivity phase change materials can effectively maintain the stable operation of the display screen, and avoid problems such as uneven color blocks and decreased brightness. Thermal conductive phase change materials have indeed brought revolutionary changes to the heat dissipation of LED products, making LED products have better performance and longer life. I believe that with the continuous development of technology, it will shine in more LED products and bring us better lighting and display experience!