LIGHT-EMITTING DEVICE AND LIGHTING APPARATUS USING THE SAME

摘要

A light-emitting device including: a substrate; LEDs arranged on the substrate in a row; electrode pad pairs each including electrode pads at opposite sides of a corresponding LED in a row direction; Zener diodes (protective elements) in one-to-one correspondence to circuits (groups) U1 to U8 each including nine consecutive LEDs, each protective element being located between adjacent electrode pads; and a sealing member sealing the LEDs, the electrode pad pairs, and the Zener diodes, wherein, in each circuit, a distance between electrode pads included in an electrode pad pair corresponding to an LED located closest to the Zener diode is the shortest, and a distance between electrode pads varies between two electrode pad pairs other than the electrode pad pair corresponding to the closest LED.

主权项

1. A light-emitting device comprising:
a substrate; a plurality of light-emitting elements arranged on the substrate in a row; electrode pad pairs formed on the substrate in one-to-one correspondence to the light-emitting elements, each electrode pad pair including two electrode pads located on the substrate at opposite sides of a corresponding light-emitting element in an arrangement direction of the light-emitting elements; protective elements provided in one-to-one correspondence to groups each constituted by at least three consecutive sets of light-emitting elements and electrode pad pairs corresponding thereto, each protective element being located between any two adjacent electrode pads included in different electrode pad pairs; and a sealing member provided on the substrate to seal the light-emitting elements, the electrode pad pairs, and the protective elements, wherein in each group,
a distance between two electrode pads included in an electrode pad pair corresponding to a light-emitting element located closest to the protective element is shorter than a distance between two electrode pads included in any other electrode pad pair, anda distance between two electrode pads included in each electrode pad pair varies between at least two electrode pad pairs other than the electrode pad pair corresponding to the light-emitting element located closest to the protective element.