A light bar structure is provided, including a longitudinal circuit board, a plurality of light-emitting elements, and a power-input terminal. The circuit board includes a first segment, a second segment, and a third segment arranged along a longitudinal axis of the circuit board, wherein the second segment is between the first segment and the third segment. The light-emitting elements are disposed on the circuit board. The power-input terminal is disposed on the second segment and electrically connected to the light-emitting elements in parallel.