A kind of automobile meter housing and backlight assembly

Abstract

The invention discloses an automobile instrument shell and a backlight module. The backlight module comprises an anti-surge circuit, a buzzer drive circuit, a comprehensive data display circuit, a backlight adjustable circuit, an expansion indication lamp drive circuit, an anti-static device and a CPU. The output end of the anti-surge circuit is connected with the power input end of the CPU, the power input end of the buzzer drive circuit, the power input end of the comprehensive data display circuit, the power input end of the backlight adjustable circuit and the power input end of the expansion indication lamp drive circuit. The signal output end of the comprehensive data display circuit is connected with the signal input end of the backlight adjustable circuit, the buzzer signal output end of the comprehensive data display circuit is connected with the signal input end of the buzzer drive circuit, the indication lamp signal output end of the comprehensive data display circuit is connected with the signal input end of the expansion indication lamp drive circuit, and the signal output end of the expansion indication lamp drive circuit is connected with the signal input end of the backlight adjustable circuit.

Description

Technical field [0001] The invention relates to the field of electronic circuits, in particular to an automobile instrument housing and a backlight assembly. Background technique [0002] In the prior art, there is no structure for directly mounting the backlight assembly on the car instrument housing. The backlight assembly is directly mounted on the PCB assembly, and the PCB assembly is installed in the housing. The housing opens at the position facing the backlight assembly. To give way to the gap, a screen is also installed on the shell, and an LCD window is opened on the screen, and the LCD window is directly facing the LCD display area of ​​the backlight assembly. In this way, the backlight assembly is positioned by the PCB assembly, and the screen is positioned by the housing. Due to the inconsistent positioning reference, it is very easy to cause the LCD display area on the backlight assembly and the LCD window on the screen to not be completely aligned. [0003] When usin...

AI Technical Summary

Problems solved by technology

[0006] The car instrument display function is more and more powerful, but it only has some basic display functions, including speed, speed, fuel, water temperature and some basic information display functions of warning lights. For the needs of modern people, its traditional functions are far from Can not meet the various needs of users;

[0007] There are more and more alarm indicator lights displayed on the car instrument on the vehicle, and there are more and more display devices that need to alarm at the same time. The LED alarm indicator scheme controlled by the traditional car instrument alarm display method cannot control all the indicator lights at the same time;

[0008] The demand for car display functions is also changing. People pursue a variety of car control experiences, especially for car meters, not just a simple display background light, especially for the LCD backlight and text board of car meters, pointer brightness It used to be fixed and not humanized enough

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