| 摘要 |
According to an embodiment, a lighting device includes a light source unit including a plurality of point light sources; a long cylindrical optical housing storing the light source unit inside, and including an opening at an end or both ends; an end cap closing the opening of the optical housing; and a power source unit electrically connecting the light source unit with an external power source, and placed on the end cap. The optical housing more includes at least two combination grooves, formed by denting an outer surface of the optical housing. The two combination grooves are formed in a longitudinal direction of the optical housing. The light source unit is combined with an inner surface of the optical housing, and placed between the combination grooves. |
