US 9,755,126 B2 · Light source unit

Abstract

A light source unit includes a plurality of LED elements disposed on a plurality of band-shaped wirings on a substrate. The LED elements on one band-shaped wiring are electrically connected by wires to an adjacent band-shaped wiring. The LED elements are disposed on the substrate in a staggered arrangement as a whole. The LED elements can be densely disposed without poor connection occurring in the wires connected to the band-shaped wirings, and effective cooling can be carried out without impeding the dissipation of heat from the LED elements. One or more damming channels are formed between each two adjacent LED elements on each band-shaped wiring. A non-effusion region is formed, into which no solder flows, between each two adjacent LED elements. The wires are connected to the non-effusion regions.

Claims17

Dependent claims

A light source unit comprising:

a substrate;
a plurality of parallel strip-like wirings on the substrate;
a plurality of LED elements disposed on each said strip-like wiring, said LED elements soldered on a first one of the strip-like wirings being electrically connected to a second adjacent one of the strip-like wirings by wires respectively, said plurality of LED elements being arranged zigzag on the substrate as a whole;
and
a plurality of damming grooves formed in each said strip-like wiring, at least one said damming groove being provided between each two adjacent said LED elements on each said strip-like wiring such that a non-effusion region, into which no solder flows, is formed between said each two adjacent LED elements, said wires being connected to the non-effusion regions.

2 more elements

Dependencies are inferred from the claim text.

Light source unit

Life of this patent

Light source unit

Life of this patent

Abstract

Claims17