Patent ID: 9303822
Filing Date: 2016-04-05
CPC Classification: F21K,F21V,F21Y

Claim Text:
1. A lighting device comprising: a heat sink having a predetermined volume and comprising a top surface, a body and a plurality of fins disposed on an outer circumferential surface of the body; a member which has a polygonal pillar shape having at least three sides and is disposed on the top surface of the heat sink integrally formed with the top surface of the heat sink; a light source which is disposed on at least one among the sides of the member, the light source including a substrate, at least one light emitting device and a lens unit; and a cover which is disposed on the heat sink and has an opening formed in a lower portion with an empty interior, wherein the cover includes a reflective material reflecting at least a part of the light emitted from the light source, wherein the heat sink includes a receiver formed in a lower inside to receive a circuitry, wherein entire portion of the plurality of fins are arranged under the top surface of the heat sink, wherein a width horizontally measured between an outermost point of the fin and an innermost point of the fin contacting the body increases as the distance between the outermost point and the top surface increases until the outer most point reaches a first point, and wherein the width decreases as the distance between the outermost point and the first point increases until the outermost point converges to the innermost point.