Patent ID: 8833982
Filing Date: 2014-09-16
Classification: F21K,F21V,F21Y,H01L,H05B,Y10T

Abstract:
1. A lighting device comprising: a substrate including a circular mounting area, a first connecting electrode disposed on the substrate, and a second connecting electrode oppositely disposed on the substrate to the first connecting electrode across the circular mounting area; and light-emitting elements arranged in lines that are extended in parallel with one another at the circular mounting area of the substrate between the first connecting electrode and the second connecting electrode disposed on the substrate and that include a central line extended in a central portion of the mounting area between the first connecting electrode and the second connecting electrode and include a line of periphery positioned away from the central line in a perpendicular direction that is perpendicular to the central line, wherein the light-emitting elements arranged in the central line outnumbers the light-emitting element arranged in the line of periphery, the light-emitting elements in the lines are divided into groups each including the same number of light-emitting elements, the light-emitting elements within each group are electrically connected in series with one another by metallic wires and electrically connected in series to the first connecting electrode and to the second connecting electrode of the substrate, and the groups each including the same number of light-emitting elements are electrically connected in parallel between the first connecting electrode and the second connecting electrode.