A light source module comprising: at least one light source emitting light; and a body supporting the light source, wherein the body comprises: a heat sink supporting the light source on a top surface thereof, the heat sink absorbing heat from the light source and dissipating the heat to the outside; an insulating layer provided on at least one surface of the heat sink, the insulating layer having electrical insulating properties; and a conductive layer provided on the insulating layer, wherein the conductive layer comprises: connection regions through which electric current can be applied to the light source; a light source region (200, 300) being disposed between the connection regions and having the light source mounted therein, the light source region and the connection regions forming a closed circuit having an inside and an outside; and a heat dissipation region having an inner heat dissipation region provided inside the light source region and the connection regions and an outer heat dissipation region provided outside the light source region and the connection regions, wherein the heat dissipation region is configured for transferring heat generated from the light source to the heat sink, wherein the light source region includes a first light source mounting part, a second light source mounting part, and a third light source mounting part, the first light source mounting part is connected to the first one of the connection regions, the second light source mounting part is connected to the second one of the connection regions, and the third light source mounting part is connected to the inner heat dissipation region and the outer heat dissipation region, wherein a protective layer is stacked on the conductive layer, the protective layer being provided such that the light source region having the light source mounted therein is opened. a body supporting the light source, wherein the body comprises: a heat sink supporting the light source on a top surface thereof, the heat sink absorbing heat from the light source and dissipating the heat to the outside; an insulating layer provided on at least one surface of the heat sink, the insulating layer having electrical insulating properties; and a conductive layer provided on the insulating layer, a heat sink supporting the light source on a top surface thereof, the heat sink absorbing heat from the light source and dissipating the heat to the outside; an insulating layer provided on at least one surface of the heat sink, the insulating layer having electrical insulating properties; and a conductive layer provided on the insulating layer, wherein the conductive layer comprises: connection regions through which electric current can be applied to the light source; a light source region (200, 300) being disposed between the connection regions and having the light source mounted therein, the light source region and the connection regions forming a closed circuit having an inside and an outside; and a heat dissipation region having an inner heat dissipation region provided inside the light source region and the connection regions and an outer heat dissipation region provided outside the light source region and the connection regions, connection regions through which electric current can be applied to the light source; a light source region (200, 300) being disposed between the connection regions and having the light source mounted therein, the light source region and the connection regions forming a closed circuit having an inside and an outside; and a heat dissipation region having an inner heat dissipation region provided inside the light source region and the connection regions and an outer heat dissipation region provided outside the light source region and the connection regions, wherein the heat dissipation region is configured for transferring heat generated from the light source to the heat sink, wherein the light source region includes a first light source mounting part, a second light source mounting part, and a third light source mounting part, the first light source mounting part is connected to the first one of the connection regions, the second light source mounting part is connected to the second one of the connection regions, and the third light source mounting part is connected to the inner heat dissipation region and the outer heat dissipation region, wherein a protective layer is stacked on the conductive layer, the protective layer being provided such that the light source region having the light source mounted therein is opened.