Vehicle-mounted central control navigation device configured with high-fidelity power amplification circuit and heat dissipation method thereof

Abstract

The invention provides a vehicle-mounted central control navigation device configured with a high-fidelity power amplification circuit and a heat dissipation method thereof. The vehicle-mounted central control navigation device comprises a navigation circuit board, a power amplification circuit board and a heat dissipation casing. Heat-generating components are all arranged on one side of the power amplification circuit board. The power amplification circuit board is installed in a power amplifier installation chamber, the heat-generating components on the power amplification circuit board allface the casing wall of the heat dissipation casing, the space between the heat-generating components and the casing wall of the heat dissipation casing is filled with insulating heat-conducting rubber sheets made of an insulating heat-conducting material, and therefore heat of the heat-generating components can be conducted to the heat dissipation casing. According to the invention, heat generated by large-power heat-generating components can be dissipated quickly and therefore the heat dissipation demand of a high fidelity (Hi-Fi) power amplifier is satisfied, and the vehicle-mounted navigation device can reach a high fidelity (Hi-Fi) sound effect.

Description

technical field [0001] The invention relates to a heat dissipation structure and a heat dissipation method of an electrical appliance, in particular to a heat dissipation structure and a heat dissipation method arranged for a high-power component adapted to a low-power electrical appliance. Background technique [0002] With the continuous expansion of the functions of car navigation products, navigation products are generally equipped with video and audio playback functions, and the demand for sound effects of navigation products is increasing, that is, the market needs navigation devices with high-fidelity High-Fidelity sound effects. Most of the power amplification components in the existing technology to achieve high-fidelity Hi-Fi sound effects are built with discrete components. Because of their high power and high heat generation, good heat dissipation is required. There should be enough space and heat dissipation measures to dissipate high heat, otherwise it is easy t...

AI Technical Summary

Problems solved by technology

In order to adapt to the limited space in the car, the car navigation device often adopts a relatively compact structure, and it is difficult to arrange high-fidelity Hi-Fi power amplifier components in the limited space of the navigation device

In the prior art, although there is a solution of separately configuring a high-fidelity Hi-Fi power amplifier outside the navigation device to improve the sound effect, this solution is still limited by the space in the car, so it is very difficult to arrange, and the layout solutions of different models are not compatible with each other. ;In addition, the vehicle power supply adopts 12V low-voltage DC power supply. In order to meet the requirements of high-fidelity Hi-Fi power amplification, it is necessary to adjust and modify the original circuit structure in the vehicle to reduce the safety of the circuit in the vehicle.

Therefore, there is no vehicle-mounted central control navigation device configured with a high-fidelity Hi-Fi power amplifier circuit in the prior art.

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