Patent ID: 7248176

Claim:
A color-changeable warning apparatus of a vehicle meter, wherein an exterior main body of the vehicle meter consists of a meter shell and the color-changeable warning apparatus mounted inside the meter shell is a control loop, the control loop comprising: a signal transforming circuit formed on the control loop for electrically connecting with a target position of a vehicle and transforming a measured value of the target position into a first digital signal; a processing unit electrically connected with the signal transforming circuit for receiving the first digital signal and performing operation and prosecution, the processing unit having a comparison program for comparing the first digital signal with a second digital signal to generate a parameter comparison result, the parameter comparison result being read by the processing unit to trigger at least a light-emitting device of a light-outputting group to change the outputted light color; the light-outputting group electrically connected to the processing unit and comprising the light-emitting device corresponding to a display machine; the display machine electrically connected to the processing unit and triggered by the processing unit; and a setting unit electrically connected to the comparison program provided by the processing unit to make an inputted setting value become the second digital signal such that the second digital signal can be set manually, wherein when the first digital signal value is compared with the setting value set in the setting unit, the parameter comparison result is read by the processing unit to trigger the light-outputting group to change the outputted light color for warning a driver.