An air-processing apparatus is provided that may include a case having an outlet formed therein, at least one louver rotatably disposed in the case to adjust a direction of air flowing through the outlet, and an output device including a lamp, a printed circuit board on which the lamp is mounted, and a transparent panel configured to allow light emitted from the lamp to pass therethrough. The at least one louver may include a plurality of vanes spaced apart from each other in a radial direction about a louver rotational shaft. The transparent panel may be disposed in at least one of the plurality of vanes.