| 摘要 |
An embodiment relates to a lens used for a lighting device, a gap member, and a lighting device, in detail a lens for a lighting unit that makes it possible to achieve efficient luminance distribution on a surface where light is radiated, a gap member that improves efficiency of light emitted from a lighting device and voltage resistance, and a lighting device that has excellent heat dissipation and waterproof characteristics and can be easily maintained. A lens according to an embodiment includes: a circular incident surface that has a furrow surface crossing a surface and prism surfaces formed at both sides of the furrow surface; and an exit surface that refracts and transmits light traveling inside through the incident surface to the outside. Further, a gap member according to an embodiment includes: a ring-shaped reflective portion having a declined surface toward the center; and a ring-shaped wall extending downward coaxially with the reflective portion, and has a flat ring shape. Further, a lighting device according to an embodiment includes: a substrate; a light emitting unit including a plurality of LEDs mounted on the substrate; a case body accommodating the light emitting unit; a lens disposed on the light emitting unit; a first waterproof ring disposed around the lens; and a case cover having an opening that exposes the lens, and combined with the case body and the first waterproof ring. |
