LED light string with transparent and opaque coatings

Patent metadata

Field	Value
Publication number	US-12492809-B2
Application number	US-202318321345-A
Country	US
Kind code	B2
Filing date	May 22, 2023
Priority date	Oct 5, 2020
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

A lighting apparatus can include a first component wire, a second component wire, a return wire, and a plurality of light emitting diodes (LEDs). A first respective end of the first component wire and the second component wire are electrically connected. The first component wire and the second component each include a plurality of breaks, dividing each one of the component wires into individual segments. A second respective end of the first component wire, the second component wire, and the return wire are electrically interconnected. The plurality of diodes may be connected to the first component wire and the second component wire at periodic distances. An at least partially translucent insulating thermoset polymer is provided as a coating over the plurality of LEDs. An opaque insulating material covers the first component wire, the second component wire, and the return wire, except those portions including an LED.

First claim

What is claimed is:

1 . An apparatus comprising:
a first component wire having first and second terminal sections and a plurality of first breaks providing a plurality of first segments; a second component wire having first and second terminal sections and a plurality of first breaks providing a plurality of first segments; a return wire defining first and second terminal sections; a plurality of light sources connected to the first component wire and the second component wire at connection points disposed at periodic distances; an at least partially translucent insulating thermoset polymer; and a substantially opaque insulating material, wherein:
the first terminal section of the first component wire is electrically connected to the first terminal section of the second component wire
the second terminal sections of the first component wire, the second component wire, and the return wire are electrically connected,
the plurality of light sources are coated with the insulating thermoset polymer,
the first breaks are filled by first portions of the insulating thermoset polymer,
the second breaks are filled by second portions of the insulating thermoset polymer separate from the first portions, and
the first component wire, the second component wire, and the return wire are coated with the substantially opaque insulating material in segments not including the connection points.

2 . The apparatus of claim 1 , wherein:
at least two of the light sources are coated in separate portions of the insulating thermoset polymer; at least another two of the light sources are coated by a same portion of the insulating thermoset polymer, wherein the at least another two diodes are configured to emit different colors of light.

3 . The apparatus of claim 1 , wherein the insulating thermoset polymer comprises multiple layers of different materials.

4 . The apparatus of claim 1 , wherein the insulating thermoset polymer is tinted to alter a wavelength of light emitted from the plurality of light sources.

5 . The apparatus of claim 1 , wherein the opaque insulating material is a polyvinyl chloride (PVC) wire jacket.

6 . The apparatus of claim 1 , wherein the first component wire, the second component wire, the return wire, and the plurality of light sources are configured to conduct electric current produced by an input voltage of approximately 29 volts of direct current.

7 . The apparatus of claim 1 , wherein the apparatus further comprises an endpiece connected to the first component wire, the second component wire, and the return wire near the first terminal sections, and the endpiece is configured for connection to a wall outlet.

8 . The apparatus of claim 1 , further comprising an alternating-current-to-direct-current (AC/DC) convertor.

9 . The apparatus of claim 1 , wherein the light sources are light-emitting diodes (LEDs).

10 . The apparatus of claim 9 , wherein the light-emitting diodes are surface mount technology (SMT) LEDs.

11 . The apparatus of claim 9 , wherein a polarity of the light-emitting diodes changes at periodic distances along the apparatus.

12 . The apparatus of claim 1 , wherein the substantially opaque insulating material is formed to have three connected channels that carry the first component wire, the second component wire, and the return wire.

13 . The apparatus of claim 12 , wherein the insulating thermoset polymer is flexible.

14 . The apparatus of claim 12 , wherein the substantially opaque insulating material flexible.

15 . The apparatus of claim 14 , wherein the substantially opaque insulating material is green.

Assignees

• Belgravia Wood Ltd

Inventors

• Leung Chi Yin Alan

Classifications

• H01B13/32

  Filling or coating with impervious material · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V23/001 Primary

  the elements being electrical wires or cables · CPC title

• F21S4/10 Primary

  with light sources attached to loose electric cables, e.g. Christmas tree lights · CPC title