The lighting device

The embodiment of the utility model discloses a lighting device, which comprises a body part, a retaining part, a light source part, a control part, an area control part and a first heat conduction part, wherein at least part of the retaining part is arranged inside the body part; the light source part is arranged at one end of the body part and comprises light emitting elements; the control part is arranged inside the retaining part and controls the light emitting elements; the area control part is arranged between the control part and the retaining part and comprises a recess part; and the first heat conduction part is positioned inside the recess part and arranged between the control part and the retaining part.