Light string

• US 20070247868A1
• Filed: 04/20/2006
• Published: 10/25/2007
• Est. Priority Date: 04/19/2006
• Status: Abandoned Application

• Current Assignee: Cindex Holdings Limited
• Original Assignee: Cindex Holdings Limited
• Inventors: Li, Zhaoyuan
• Application Number:
  US11/407,852
• Publication Number:
  US 20070247868A1
• Time in Patent Office: Days
• US Class Current: 362/565
• CPC Class Codes: F21S 4/10 with light sources attached to loose electric cables, e.g. Christmas tree lights
• CPC Class Codes: H05B 39/105 with a spare lamp in the circuit, and a possibility of shunting a failed lamp lamp changing devices H01R33/00, H01R43/00; incandescent lamps with a reserve body H01K
• CPC Class Codes: H05B 47/23 of two or more light sources connected in series

Abstract

A light string, which can be used for decorative purposes during holidays, is provided. In one embodiment, the light string includes a plurality of input terminals adapted to receive power from a voltage source; a plurality of light assemblies, wherein at least one of the plurality of light assemblies is electrically connected to at least one of the plurality of input terminals, each light assembly including at least two lights electrically connected in series; and at least one bidirectional voltage regulator diode, wherein the combination of the at least one bidirectional voltage regulator diode is connected in parallel to the at least two series connected lights and functions as an electrical shunt for the at least two lights.

Claims

1. A light string comprising:

a plurality of input terminals adapted to receive power from a voltage source;

a plurality of light assemblies, wherein at least one of the plurality of light assemblies is electrically connected to at least one of the plurality of input terminals, each light assembly including;

at least two lights electrically connected in series; and

at least one bidirectional voltage regulator diode,

wherein the combination of the at least one bidirectional voltage regulator diode is connected in parallel to the at least two series connected lights and functions as an electrical shunt for the at least two lights.

2. The light string of claim 1, wherein the at least one bidirectional voltage regulator diode is a bidirectional Zener diode.

3. The light string of claim 1, wherein the at least one bidirectional voltage regulator diode has voltage ratings so that when one or more of the at least two lights is burned out, there is not a reduced current flow or an undesired increase in current flow in the light string.