Car dash cameras seem to have become an essential accessory for today's car owners. In the face of complex traffic conditions and the difficulty in defending against pickpockets, 4G car dash cameras have become an intelligent product for car owners to record driving videos. They serve as an important piece of evidence in case of unexpected situations! Especially, many of these cameras are now equipped with 1080P ultra-high-definition video recording. During operation, the car dash camera keeps recording, and the data processing by the main components is extremely large. The chips are operating at high speed, and the heat generated is also very large. If the key components are not cooled properly, the camera will stop recording, restart, or even burn out. This is the problem of overheating and system crash that is mentioned. Especially, many dashcam devices are placed under the front windshield and exposed to the sun for a long time, eventually getting "burned out". Once turned on, they overheat and crash. What should be done if the dashcam overheats and crashes? Then, it is necessary to solve the problem of heat dissipation in the product design. And using thermal conductive silicone is currently the mainstream solution. You might think that if I buy a dashcam that is resistant to sunlight and high temperatures, there won't be any problem. Of course, it's not that simple. The most fundamental thing is to start from the internal heat dissipation structure of the dashcam. Choose a good thermal conductive soft silicone sheet to solve the problem of heat dissipation for the heat source. The main function of the thermal conductive soft silicone sheet is to conduct heat away from the main components to cool them down, and to dissipate heat for the 4G car dash cameras to ensure its normal operation. The cooling principle of the thermal conductive soft silicone sheet is to transfer the heat from the DSP main control chip and DDR2 chip of the car dash cameras to the shielding cover, and then radiate the heat to the air through the shielding cover and conduct heat transfer through the grounding layer of the motherboard. Actually, this simple principle should be understandable to everyone. Then why are there still so many car dash cameras on the market that have problems with overheating and thus affect their usability？ Perhaps it is because of cost control， where only the price of the thermal conductive soft silicone sheet is considered while the quality is ignored. As a result， cheap thermal conductive soft silicone sheets were purchased. Some manufacturers of行车记录仪 even did not use thermal conductive soft silicone sheets for heat dissipation， which led to system crashes. Choosing a suitable thermal conductive soft silicone sheet to be used for heat dissipation in 4G car dash cameras is of vital importance.