A light emitting module comprising: a condensing lens for condensing incident light into a space; a light source for providing first light to pass through the condensing lens; a first optical path conversion member for reflecting the first light to provide first reflected light to pass through the condensing lens; a second optical path conversion member for providing the first reflected light as second reflected light to pass through the condensing lens; and a case for receiving at least the condensing lens, the light source, the first optical path conversion member, and the second optical path conversion member, characterized in that the case comprises: a main case for receiving at least the condensing lens and the first optical path conversion member, the main case having an optical opening for allowing light provided by the light source to pass therethrough; a light source case for receiving the light source, the light source case being coupled to the main case such that light provided by the light source is supplied to the condensing lens through the optical opening; a bracket for receiving the second optical path conversion member, the bracket being coupled to the main case such that light having passed through the second optical path conversion member is supplied to the condensing lens through a window formed in the main case; and a second positioning unit for setting a position of the second optical path conversion member to the main case. a condensing lens for condensing incident light into a space; a light source for providing first light to pass through the condensing lens; a first optical path conversion member for reflecting the first light to provide first reflected light to pass through the condensing lens; a second optical path conversion member for providing the first reflected light as second reflected light to pass through the condensing lens; and a case for receiving at least the condensing lens, the light source, the first optical path conversion member, and the second optical path conversion member, characterized in that the case comprises: a main case for receiving at least the condensing lens and the first optical path conversion member, the main case having an optical opening for allowing light provided by the light source to pass therethrough; a light source case for receiving the light source, the light source case being coupled to the main case such that light provided by the light source is supplied to the condensing lens through the optical opening; a bracket for receiving the second optical path conversion member, the bracket being coupled to the main case such that light having passed through the second optical path conversion member is supplied to the condensing lens through a window formed in the main case; and a second positioning unit for setting a position of the second optical path conversion member to the main case. a main case for receiving at least the condensing lens and the first optical path conversion member, the main case having an optical opening for allowing light provided by the light source to pass therethrough; a light source case for receiving the light source, the light source case being coupled to the main case such that light provided by the light source is supplied to the condensing lens through the optical opening; a bracket for receiving the second optical path conversion member, the bracket being coupled to the main case such that light having passed through the second optical path conversion member is supplied to the condensing lens through a window formed in the main case; and a second positioning unit for setting a position of the second optical path conversion member to the main case.