Patent ID: 9562653
Date: 2017-02-07
CPC Classifications: F21K,F21V,F21Y

Claim:
1. A lighting device comprising: a heat sink comprising a lower portion and an upper portion including one surface; a light source provided on the one surface of the heat sink, and the light source including a substrate and a light emitting device disposed on the substrate; a cover coupled to the upper portion of the heat sink, and the cover including a dome provided on the light source and a body supporting the dome; a reflective plate provided in the body and having an opening through which a part of light from the light source passes, the reflective plate including a plurality of holes, wherein the reflective plate is within a space defined by the body, the reflective plate having a maximum radius and a minimum radius, and the opening is within a space defined by the minimum radius of the reflective plate; and a case coupled to the lower portion of the heat sink, wherein the body of the cover includes an upper portion coupled to the dome, a lower portion coupled to the heat sink, and a middle portion disposed between the upper portion and the lower portion, wherein the reflective plate is provided on the upper portion or the middle portion of the body, wherein the opening of the reflective plate is provided at a center portion of the reflective plate, and wherein the plurality of holes are provided around the opening, and wherein a luminous flux between 130° to 180° based on a central axis of the cover is larger than 10% of a total luminous flux of the lighting device.