To provide a mechanism of cleaning with reduced cost.SOLUTION: A cleaning device of the present invention has a first inflow port into which a gas containing an odor of the cleaning object flows, a second inflow port into which the outside air flows, and a cleaning part that mixes the gas having flowed into the first inflow port and the outside air having flowed into the second inflow port for cleaning.SELECTED DRAWING: Figure 1【課題】コストを低減した洗浄の仕組みを提供することを目的とする。【解決手段】本発明は、洗浄対象の臭気を含む気体を流入する第１流入口と、外気が流入する第２流入口と、第１流入口で流入した気体と第２流入口で流入した外気とを混合して洗浄する洗浄部とを有することを特徴とする。【選択図】図１
