To provide a tire balancer device that rotates in high speed with a tire wheel mounted on the end portion of a rotation axis and is used to measure an unbalance amount and an unbalance position from the generated centrifugal force, the device improved in convenience of work by illuminating a rim inner circumferential surface of the wheel.

Plural lights 10, 10, and so on, are disposed on a circumference of a main shaft 4 on a side surface of a body 1 so that the plural rights 10, 10, and so on, illuminate a rim inner circumferential surface of a wheel 3 mounted on the main shaft 4.