An operating state display system includes a housing, a board provided inside the housing, a first light emitter attached on the board, a second light emitter arranged adjacent to the first light emitter on the board, a first light guider attached to the housing to face the first light emitter, a second light guider attached to the housing to face the second light emitter, and an electronic component attached between the first and second light emitters on the board. The electronic component protrudes by a predetermined length in the same direction as the first and second light emitters from a surface of the board. The predetermined length is longer than a distance between the first light emitter and the board and a distance between the second light emitter and the board.