The present disclosure provides a lighting device comprising: a reflective element layer; an optical resin layer formed on the reflective element layer; a transparent electrode film layer formed on the optical resin layer; and a plurality of light-emitting units formed on the lower surface of the transparent electrode film layer. The lighting device allows the fundamental cause of the hot spot phenomenon to be eliminated, shows excellent luminous efficiency by efficiently performing the function of a surface light source, and enables the kinds of raw materials and the number of production processes to be reduced by eliminating the use of a PCB board and selectively applying second reflective patterns.