The invention provides circuitry for carrying out at least one of a square root operation and a division operation. The lip portions have lengths individually set so that, even if the door glass vibrates in the door glass run, the lip portions will not be spaced away from the door glass. A branch pipe is formed as a unitary body with the ring joint body and arranged in a direction perpendicular to and intersecting with the eyebolt. The LEDs are arranged in a densely packed array facing the liner and emit uniform, high intensity light.