External speedometer for motor vehicle

Abstract

The present invention relates to meters of motor vehicle, and is especially one external speedmeter for motor vehicle for showing vehicle speed outwards. The external speedmeter has sensor and external speed display connected through wires and makes it possible for persons outside the vehicle to know the speed of the vehicle. The present invention is favorable to avoiding collision accident and can facilitate the vehicle management.

Description

technical field [0001] The invention relates to the field of instrumentation for motor vehicles. International classification B60K35 / 00. Background technique [0002] The speedometer of present motor vehicle all is installed on the instrument panel in the cab of motor vehicle. This speed per hour instrument can only prompt the speed state of the motor vehicle running to the driver, and the people outside the car, especially the drivers of other motor vehicles, do not know the speed per hour of the car. Often by intuition to judge the speed of the car. This approach is neither scientific nor accurate. Due to misjudgment, rear-end collision accidents of motor vehicles often occur. For traffic management personnel with management functions, it is impossible to detect whether a motor vehicle is overspeed without the aid of an instrument. There are also deficiencies in traffic management. Contents of the invention [0003] The object of the present invention is to provide...

AI Technical Summary

Problems solved by technology

For traffic management personnel with management functions, it is impossible to detect whether a motor vehicle is speeding without the aid of instruments

There are also deficiencies in traffic management