A light scanning device includes a housing, a plurality of permeable members, a plurality of cleaning members, a plurality of cleaning holders, a linear member, and a driving unit. The plurality of permeable members close the respective plurality of the emission ports. The plurality of cleaning holders extend over the plurality of the permeable members adjacent to one another. The plurality of the cleaning holders each have a holding unit that holds at least the two cleaning members. The linear member is connected to the plurality of the cleaning holders. The driving unit causes the linear member to run circularly. The cleaning members each slide on the corresponding permeable member in association with the linear member running circularly. The cleaning holders each connected to the linear member at a center of the holding unit in an extending direction of the holding unit.