Patent ID: 9243791
Filing Date: 2016-01-26
CPC Classification: F21K,F21V,F21Y,H01L,H05K

Claim Text:
1. A light-emitting device comprising: a substrate; a resin dam formed on a primary surface of said substrate and provided so as to surround a mounting area around a center of said substrate; a first electrode land and a second electrode land which are electrodes to be connected to a power supply, said first and second electrode lands being provided on the primary surface of said substrate and outside said resin dam; a first wiring pattern provided on the primary surface of said substrate and electrically connected to said first electrode land, said first wiring pattern including a first portion located under said resin dam and curved along said resin dam; a second wiring pattern provided on the primary surface of said substrate and electrically connected to said second electrode land, said second wiring pattern including a second portion located under said resin dam and curved along said resin dam; a first series of LED chips provided on the mounting area and electrically connected in series between said first wiring pattern and said second wiring pattern, a second series of LED chips provided on the mounting area and electrically connected in series between said first wiring pattern and said second wiring pattern, a number of LED chips in said first series being same number as the LED chips in said second series; a first wire connected between the first portion of said first wiring pattern and the LED chip at the end of said first series, said first wire being contacted with the first portion at a first contact point; a second wire connected between the second portion of said second wiring pattern and the LED at the other end of said first series, said second wire being contacted with the second portion at a second contact point; a third wire connected between the first portion of said first wiring pattern and the LED chip at the end of said second series, said third wire being contacted with the first portion at a third contact point; a fourth wire connected between the second portion of said second wiring pattern and the LED at the other end of said second series, said fourth wire being contacted with the second portion at a fourth contact point, a distance between the third and fourth contact points being smaller than a distance between the first and second contact points; and a resin layer provided attaching to an inner side of said resin dam and covering said first and second series of LED chips and said first, second, third and fourth wires.