A light emitting module of a lighting device has a casing, a heat radiating member and terminals. The terminals extend from the casing and connects to a circuit board disposed along a light diffusing member. The heat radiating member extends in a direction perpendicular to the terminals. Alternatively, the terminals are connected to heat radiating lands formed on a second circuit board that is provided separately from a first circuit board and the heat radiating member is connected to a heat radiating land formed on the second circuit board. Further, the heat radiating member can be connected to a heat radiating plate overlapping with the second circuit board, in place of the heat radiating land.