A lighting device comprising: a EL device use front plate comprising: a translucent substrate; a high refractive index layer having a refractive index higher than that of the translucent substrate, and provided on a first surface of the translucent substrate; and an electrically conductive light reflection layer having electrical conductivity and light reflectivity, laminated on a portion corresponding to a non-luminous region formed around a luminous region on a back surface of the high refractive index layer which is on an opposite side to a surface where the translucent substrate is provided, wherein the electrically conductive light reflection layer is not laminated on another portion of the back surface of the high refractive index layer corresponding to the luminous region; and the lighting device further comprises a transparent anode part laminated on the high refractive index layer which is on an opposite side to a surface where the translucent substrate is provided; a light emitting element part laminated on the transparent anode part which is on an opposite side to a surface where the electrically conductive light reflection layer is provided; and a cathode part laminated on the light emitting element part which is on an opposite side to a surface where the transparent anode part is provided, wherein in the luminous region, the light emitting element part is in contact with the transparent anode part; and in the non-luminous region, an insulating layer is laminated between the transparent anode part and the light emitting element part, characterized in that a relation expressed by: B > A / 2 is ensured to be satisfied in the luminous region, where B is a distance from a surface of the light emitting element part contacting the transparent anode part to the first surface of the translucent substrate contacting the high refractive index layer, and A is a diameter of the luminous region. a EL device use front plate comprising: a translucent substrate; a high refractive index layer having a refractive index higher than that of the translucent substrate, and provided on a first surface of the translucent substrate; and an electrically conductive light reflection layer having electrical conductivity and light reflectivity, laminated on a portion corresponding to a non-luminous region formed around a luminous region on a back surface of the high refractive index layer which is on an opposite side to a surface where the translucent substrate is provided, wherein the electrically conductive light reflection layer is not laminated on another portion of the back surface of the high refractive index layer corresponding to the luminous region; and the lighting device further comprises a translucent substrate; a high refractive index layer having a refractive index higher than that of the translucent substrate, and provided on a first surface of the translucent substrate; and an electrically conductive light reflection layer having electrical conductivity and light reflectivity, laminated on a portion corresponding to a non-luminous region formed around a luminous region on a back surface of the high refractive index layer which is on an opposite side to a surface where the translucent substrate is provided, wherein the electrically conductive light reflection layer is not laminated on another portion of the back surface of the high refractive index layer corresponding to the luminous region; and the lighting device further comprises a transparent anode part laminated on the high refractive index layer which is on an opposite side to a surface where the translucent substrate is provided; a light emitting element part laminated on the transparent anode part which is on an opposite side to a surface where the electrically conductive light reflection layer is provided; and a cathode part laminated on the light emitting element part which is on an opposite side to a surface where the transparent anode part is provided, wherein in the luminous region, the light emitting element part is in contact with the transparent anode part; and in the non-luminous region, an insulating layer is laminated between the transparent anode part and the light emitting element part, characterized in that a relation expressed by: B > A / 2 is ensured to be satisfied in the luminous region, where B is a distance from a surface of the light emitting element part contacting the transparent anode part to the first surface of the translucent substrate contacting the high refractive index layer, and A is a diameter of the luminous region.