Patent ID: 9620690
Date: 2017-04-11
CPC Classifications: F21V,F21Y,H01L

Claim:
1. A lighting system comprising: a board; a wiring pattern that is provided on a surface of the board and has a wiring pad; a light emitting element that is provided on the wiring pattern and includes an electrode on a surface thereof opposite to a surface thereof provided on the wiring pattern; a surrounding wall member that is provided to surround the light emitting element; a wiring that connects the wiring pad and the electrode; and a sealing portion that is provided inside the surrounding wall member and covers the light emitting element and the wiring, wherein an angle that is formed by a segment that connects a central position of a portion of the board surrounded by the surrounding wall member and a position where the wiring is connected to the wiring pad, and the wiring is 0° to 45°, or 135° to 180°, and wherein a linear expansion coefficient of the surrounding wall member is equal to or less than a linear expansion coefficient of the sealing portion, and is equal to or greater than a linear expansion coefficient of the board.