An air cleaner comprising: a first air cleaning module including a first fan that generates an air flow toward a first discharge outlet from a first suction inlet; a second air cleaning module including a second fan that generates an air flow toward a second discharge outlet from a second suction inlet; and a dividing plate provided between the first air cleaning module and the second air cleaning module, the dividing plate including a dividing plate space (449, 459), characterized in that: the second air cleaning module is provided at an upper side of the first air cleaning module, and the dividing plate further includes a first plate having a first space of the dividing plate space (449, 459), the first space passing through the first plate in a vertical direction, and a second plate coupled to an upper side of the first plate, the second plate having a second space of the dividing plate space (449, 459), the second space passing through the second plate in the vertical direction, the first and second spaces (449, 459) are arranged to extend in an upward direction to form the dividing plate space (449,459), and the air cleaner further comprises a printed circuit board device provided in the first and second spaces (449, 459). a first air cleaning module including a first fan that generates an air flow toward a first discharge outlet from a first suction inlet; a second air cleaning module including a second fan that generates an air flow toward a second discharge outlet from a second suction inlet; and a dividing plate provided between the first air cleaning module and the second air cleaning module, the dividing plate including a dividing plate space (449, 459), characterized in that: the second air cleaning module is provided at an upper side of the first air cleaning module, and the dividing plate further includes a first plate having a first space of the dividing plate space (449, 459), the first space passing through the first plate in a vertical direction, and a second plate coupled to an upper side of the first plate, the second plate having a second space of the dividing plate space (449, 459), the second space passing through the second plate in the vertical direction, the first and second spaces (449, 459) are arranged to extend in an upward direction to form the dividing plate space (449,459), and the air cleaner further comprises a printed circuit board device provided in the first and second spaces (449, 459). the second air cleaning module is provided at an upper side of the first air cleaning module, and the dividing plate further includes a first plate having a first space of the dividing plate space (449, 459), the first space passing through the first plate in a vertical direction, and a second plate coupled to an upper side of the first plate, the second plate having a second space of the dividing plate space (449, 459), the second space passing through the second plate in the vertical direction, the first and second spaces (449, 459) are arranged to extend in an upward direction to form the dividing plate space (449,459), and a first plate having a first space of the dividing plate space (449, 459), the first space passing through the first plate in a vertical direction, and a second plate coupled to an upper side of the first plate, the second plate having a second space of the dividing plate space (449, 459), the second space passing through the second plate in the vertical direction, the first and second spaces (449, 459) are arranged to extend in an upward direction to form the dividing plate space (449,459), and the air cleaner further comprises a printed circuit board device provided in the first and second spaces (449, 459).