To provide a lighting device having excellent cooling efficiency and a long life, in which a cooling fan is not downsized and heat does not conduct directly on a shaft of a cooling fan motor.

The bulb-shaped LED lamp 100 is provided with an LED 121, a heat sink 130 having fins 133, 134, a case 110 having an opening on a heat sink 130 side, an air intake port 131 formed on a part of an outer circumferential side of the heat sink 130 or the case 110, an exhaust port 132 formed on a part of the outer circumferential side other than the part of the outer circumferential side where the air intake port 131 is formed, on the heat sink 130 or the case 110, an air-blower 130 arranged between the heat sink 130 and the case 110, and a partitioning plate 135 partitioning between a first space including the intake port 131 and a second space including the exhaust port 132. In the second space, there is provided the fin 134 having a lower height than the fin 133 formed in the first space.