Disclosed is a lighting device comprising a light emitting diode; a printed circuit board in which the light emitting diode is mounted and which has the light emitting diode to supply power to the light emitting diode; a support part which is arranged to face the opposite surface to the surface facing the light emitting diode among the surfaces of the printed circuited board; a first heat radiation part which is supported by the support part and is arranged to be in contact with the printed circuit board; and a second heat radiation part which is coupled to the first heat radiation part in a screw coupling method.
