Light-emitting device and lighting device provided with the same

  • US 9,735,133 B2
  • Filed: 10/11/2016
  • Issued: 08/15/2017
  • Est. Priority Date: 09/30/2010
  • Status: Active Grant
First Claim
Patent Images

1. A light-emitting device comprising:

  • a substrate;

    a light-emitting part formed on the substrate;

    a sealing body to cover the light-emitting part;

    a first wiring pattern formed on the substrate, the first wiring pattern being used for an anode-side connection; and

    a second wiring pattern formed on the substrate, the second wiring pattern being used for a cathode-side connection, whereinthe light-emitting part includes a plurality of LED chips arranged in at least two LED rows including a first row and a second row, the number of the LED chips in the first row being smaller than that in the second row,a plurality of series circuits, each of which is composed of the same number of the LED chips connected in series as the others, are formed, each of the series circuits having one end connected to the first wiring pattern and the other end connected to the second wiring pattern, andat least one of the series circuits has a portion where an electric connection is made between one of the LED chips in the first row and one of the LED chips in a row adjacent to the first row.

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