This design uses the pulse signal from the speed sensor of the car to illuminate the instrument panel and other operation buttons to emit high-intensity 3-color chip type LEDs (three primary colors of light, red, green and blue) to emit a specified color according to the vehicle speed. As a lighting device for the instrument panel, the existing light bulb or monochromatic light emitting diode is removed, and the red, green, blue, and three-color high-brightness LEDs are connected in series with the PCB of the instrument panel and the operation buttons. It is an instrument panel lighting device that creates multiple colors by applying a variable voltage to each color of LEDs.
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