A refrigerator comprising: a main body including a storage compartment, and a deodorizer disposed inside the storage compartment, wherein the deodorizer comprises a housing including an upper housing and a lower housing coupled to each other to form a flow path, a suction port provided on a lower surface of the housing to draw air into the housing, a discharge port provided to discharge air, a photocatalytic deodorizing filter disposed above the suction port such that the photocatalytic deodorizing filter faces the suction port, and a filter light source configured to irradiate light to the photocatalytic deodorizing filter, wherein the flow path is configured to guide air from the suction port to the discharge port, and wherein the filter light source is disposed to face the photocatalytic deodorizing filter, and positioned so that air passes through the flow path between the filter light source and the photocatalytic deodorizing filter, and wherein the housing further comprises a suction grill formed on the suction port, and a lower surface of the photocatalytic deodorizing filter is spaced apart from an upper end of the suction grill by a predetermined gap so that air flows through the predetermined gap between the suction grill and the lower surface of the photocatalytic deodorizing filter, and wherein the filter light source comprises a substrate (331, 361) formed in a rectangular plate shape and a plurality of light emitting diodes (332, 362) spaced apart on a lower surface of the substrate (331, 361), and wherein the deodorizer further comprises four light source supports protruding from an upper surface of the lower housing to support front and rear ends of opposite sides of the substrate (331, 361), and each of the four light source supports comprises a seating groove in which the lower surface of the substrate (331, 361) is seated. a main body including a storage compartment, and a deodorizer disposed inside the storage compartment, wherein the deodorizer comprises a housing including an upper housing and a lower housing coupled to each other to form a flow path, a suction port provided on a lower surface of the housing to draw air into the housing, a discharge port provided to discharge air, a photocatalytic deodorizing filter disposed above the suction port such that the photocatalytic deodorizing filter faces the suction port, and a filter light source configured to irradiate light to the photocatalytic deodorizing filter, wherein the flow path is configured to guide air from the suction port to the discharge port, and wherein the filter light source is disposed to face the photocatalytic deodorizing filter, and positioned so that air passes through the flow path between the filter light source and the photocatalytic deodorizing filter, and wherein the housing further comprises a suction grill formed on the suction port, and a lower surface of the photocatalytic deodorizing filter is spaced apart from an upper end of the suction grill by a predetermined gap so that air flows through the predetermined gap between the suction grill and the lower surface of the photocatalytic deodorizing filter, and wherein the filter light source comprises a substrate (331, 361) formed in a rectangular plate shape and a plurality of light emitting diodes (332, 362) spaced apart on a lower surface of the substrate (331, 361), and wherein the deodorizer further comprises four light source supports protruding from an upper surface of the lower housing to support front and rear ends of opposite sides of the substrate (331, 361), and each of the four light source supports comprises a seating groove in which the lower surface of the substrate (331, 361) is seated. wherein the filter light source comprises a substrate (331, 361) formed in a rectangular plate shape and a plurality of light emitting diodes (332, 362) spaced apart on a lower surface of the substrate (331, 361), and wherein the deodorizer further comprises four light source supports protruding from an upper surface of the lower housing to support front and rear ends of opposite sides of the substrate (331, 361), and each of the four light source supports comprises a seating groove in which the lower surface of the substrate (331, 361) is seated.