Application of thermal conductive silicone sheet in cooling structure of surveillance camera

The surveillance camera is a kind of semiconductor imaging device, which has the advantages of high sensitivity, anti-glare, small distortion, small size, long life and anti-vibration. Surveillance camera security system. The image generation is mainly from the ccd camera, and the stored charge can also be removed to change the voltage, which has the characteristics of anti-vibration and impact and is widely used.

Surveillance cameras play a very important role in public safety, outdoor surveillance cameras are usually installed on the support pole or wall at a certain height from the ground, the overall exposure to the outdoor environment, easy to be affected by the external environment.

Monitoring camera due to the configuration of a large heat infrared light, infrared light after starting, the entire working period (12 hours) in the front of the infrared camera will have heat concentration, such as not even heat dissipation will affect the normal work of the camera. For example, 50 ￠5 of the infrared light board, if it runs for a long time, the temperature on the LED board can almost reach 90 degrees or so, the CCD image sensor behind the LED board has become the most direct victim, and the CCD image sensor can directly convert the optical signal into an analog current signal, the current signal is amplified and analog-to-digital conversion. It is an important component for image acquisition, storage, transmission, processing and reproduction in surveillance camera.

Surveillance camera manufacturers have encountered such a serious problem: the image collected by the surveillance camera will reduce the quality of the picture with the increase of temperature, thus affecting the hidden problems! The working temperature of electronic components determines the working stability and service life of electronic products, and the components with large heat output in the camera are image sensors, memory modules, and power modules. Therefore, a perfect camera cooling solution has become a problem that manufacturers cannot ignore. How to effectively solve the heat problem is one of the necessary factors to ensure the stable operation of the camera.

The heat dissipation of most surveillance cameras is through passive heat dissipation and active heat dissipation, passive heat dissipation is to increase the contact area between the heat source and the air, and active heat dissipation is to increase the heat dissipation device, no matter which way is used, it is necessary to carry out heat transfer work through thermal materials.

At present, electronic thermal conductive materials are widely used in monitoring cameras. The compressible performance of thermal conductive silicone sheets plays a very good role in shockproof thermal conductivity in the narrow internal space of monitoring cameras, which can effectively avoid the uneven heat dissipation problem caused by the displacement of thermal conductive materials. The performance of low volatile and high thermal conductivity silica gel sheet and low thermal impedance are the key materials for heat transfer of heating source, which can quickly transfer and export heat and reduce the influence of temperature on components.

Thermal conductive silicone sheet product features:

Good thermal conductivity: 3.0 -- 12.0W/mK;

With self-adhesive without additional surface adhesive;

High compressibility, soft and elastic, suitable for low pressure applications;

The product can work stably in -40-180℃ temperature, low pressure environment and provide a variety of thickness options.

The future development direction of surveillance camera products image processing capacity will be higher and higher, the pixel density is more and more mainstream camera 720P, gradually to high-end, high-definition pixels, 1080P, 4K image quality, the demand for thermal interface materials will also increase to 6W-12W; Gradually develop in the direction of cloud intelligence.