A lighting device comprising: a light source module including at least one light source disposed on a printed circuit board and a light guide member that buries the at least one light source, wherein the light guide member comprises resin layer and beads in the resin layer; a diffusion member disposed in the light guide member; and a shielding module accommodating the light source module therein, a reflection member disposed on the printed circuit board at a lower portion of the light guide member, wherein the reflection member further includes a side reflection member disposed between the at least one light source and an inner side surface of the shielding module, wherein the diffusion member comprise a sheet or film shape, and the diffusion member is buried in the light guide member wherein the diffusion member is disposed to be spaced apart from the at least one light source and to divide the light guide member along the advancement direction of light (X1, X2) through an opening region of the shielding module, and wherein the side reflection member is in contact with the at least one light source and with a bottom surface of the diffusion member, wherein the shielding module surrounds lower and side surfaces of the light source module,wherein the light guide member includes, a lower light guide member disposed on a lower portion of the diffusion member and directly contacts with the bottom surface of the diffusion member, and an upper light guide member disposed on an upper portion of the diffusion member and directly contact with a top surface of the diffusion member, wherein the lower light guide member and the upper light guide member are made of the same material, wherein the lower light guide member and the diffusion member, and the upper light guide member and the diffusion member are formed in a non-air-gap structure a light source module including at least one light source disposed on a printed circuit board and a light guide member that buries the at least one light source, wherein the light guide member comprises resin layer and beads in the resin layer; a diffusion member disposed in the light guide member; and a shielding module accommodating the light source module therein, a reflection member disposed on the printed circuit board at a lower portion of the light guide member, wherein the reflection member further includes a side reflection member disposed between the at least one light source and an inner side surface of the shielding module, wherein the diffusion member comprise a sheet or film shape, and the diffusion member is buried in the light guide member wherein the diffusion member is disposed to be spaced apart from the at least one light source and to divide the light guide member along the advancement direction of light (X1, X2) through an opening region of the shielding module, and wherein the side reflection member is in contact with the at least one light source and with a bottom surface of the diffusion member, wherein the shielding module surrounds lower and side surfaces of the light source module,wherein the light guide member includes, a lower light guide member disposed on a lower portion of the diffusion member and directly contacts with the bottom surface of the diffusion member, and an upper light guide member disposed on an upper portion of the diffusion member and directly contact with a top surface of the diffusion member, wherein the lower light guide member and the upper light guide member are made of the same material, wherein the lower light guide member and the diffusion member, and the upper light guide member and the diffusion member are formed in a non-air-gap structure