The invention relates to an air intake device (16) of a vehicle-interior ventilation system (10), in particular of a vehicle air conditioner, having a filter chamber (18) which is arranged upstream of a fan blower (34), and a filter (32) which is arranged in the filter chamber (18), the filter chamber (18) having a fresh air inlet (22) upstream of the filter (32) and a filter maintenance opening (40) which makes it possible to install and dismantle the filter (32). Furthermore, the air intake device (16) comprises an air-guiding component (24) which can be dismantled and has a fresh air intake opening (28), which air-guiding component (24) forms a fresh air duct (26) which extends from the fresh air intake opening (28) to the fresh air inlet (22) of the filter chamber (18), and which air-guiding component (24) closes the filter maintenance opening (40) by way of a cover section (42).