An air cleaner, comprising: a first air cleaning module having a first fan that generates air flow from a first suction inlet toward a first discharge outlet; a second air cleaning module having a second fan that generates air flow from a second suction inlet toward a second discharge outlet; a dividing plate provided between the first air cleaning module and the second air cleaning module; and a display provided at inside of the dividing plate and in which a light source is provided, characterized in that: the display includes: a display portion which is provided on at least a portion of an outer circumferential surface of the dividing plate and which displays information related to an operation of the air cleaner; and a diffuser that extends from the light source toward the display outward in a radial direction and transfers light which is emitted from the light source to the display portion, and wherein the dividing plate includes a first plate, and a second plate coupled to an upper side of the first plate, and the diffuser is provided between the first plate and the second plate, the diffuser includes an end portion forming the display portion, and a cross-sectional area of the diffuser gradually increases outward in the radial direction. a first air cleaning module having a first fan that generates air flow from a first suction inlet toward a first discharge outlet; a second air cleaning module having a second fan that generates air flow from a second suction inlet toward a second discharge outlet; a dividing plate provided between the first air cleaning module and the second air cleaning module; and a display provided at inside of the dividing plate and in which a light source is provided, characterized in that: the display includes: a display portion which is provided on at least a portion of an outer circumferential surface of the dividing plate and which displays information related to an operation of the air cleaner; and a diffuser that extends from the light source toward the display outward in a radial direction and transfers light which is emitted from the light source to the display portion, and wherein the dividing plate includes a first plate, and a second plate coupled to an upper side of the first plate, and the diffuser is provided between the first plate and the second plate, the diffuser includes an end portion forming the display portion, and a cross-sectional area of the diffuser gradually increases outward in the radial direction. a display portion which is provided on at least a portion of an outer circumferential surface of the dividing plate and which displays information related to an operation of the air cleaner; and a diffuser that extends from the light source toward the display outward in a radial direction and transfers light which is emitted from the light source to the display portion, and wherein the dividing plate includes a first plate, and a second plate coupled to an upper side of the first plate, and the diffuser is provided between the first plate and the second plate, the diffuser includes an end portion forming the display portion, and a cross-sectional area of the diffuser gradually increases outward in the radial direction.