BOTH-SIDE LIGHT EMITTING LIGHTING DEVICE

The present application relates to a both-side light-emitting lighting device, which maximizes a scattering effect so as to be capable of increasing light extraction efficiency, and may acquire high power efficiency as a both-side light-emitting lighting device so as to be capable of increasing the lifespan of the lighting device, and includes: a first light-outputting surface; a second light-outputting surface positioned to face the first light-outputting surface; a light-emitting device positioned between the first light-outputting surface and the second light-outputting surface; and a light extraction film including a base material, which is positioned on the first light-outputting surface, has first and second surfaces facing each other, and is provided such that light enters through the first surface and exits through the second surface, and a plurality of pores irregularly distributed in the base material, wherein the base material allows the light to be scattered when the light transmits therethrough, the scattering includes first scattering by the pores and second scattering by the first surface and/or the second surface, and the base material is provided such that a first scattering degree caused by the first scattering relatively differs from a second scattering degree caused by the second scattering.