Provided is an ozone generation device capable of emitting a sufficient amount of ozone without having to be equipped with a large air-sending apparatus. This ozone generation device comprises: a casing； a wall body partitioning a space surrounded by the casing into at least a first chamber and a second chamber； a first open section and a second open section provided in a portion of the casing, whereby the first chamber communicates with the exterior of the casing； an air-sending apparatus attached at a position on the inner side of the wall body or the outer side of the wall body, whereby the first chamber and the second chamber communicate； a third open section provided in a portion of the casing, whereby the second chamber and the exterior of the casing communicate； a light source body provided between the air-sending apparatus and the third open section in the second chamber, capable of irradiating ultraviolet light； and an electrical body provided at a position between the first open section and the second open section in the first chamber, supplying electric power for driving the light source body.
