Continuous current control circuit modules of series string bulbs type (II)

• US 20060197463A1
• Filed: 02/23/2005
• Published: 09/07/2006
• Est. Priority Date: 02/23/2005
• Status: Active Grant

• Current Assignee: Mei-Ling Peng
• Original Assignee: Mei-Ling Peng
• Inventors: Peng, Mei-Ling
• Granted Patent: US 7,242,148 B2
• Time in Patent Office: Days
• US Class Current: 315/185.00R
• CPC Class Codes: H05B 39/06 Switching arrangements, e.g. from series operation to parallel operation
• 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

Abstract

The invention relates to a continuous current control circuit module of series string bulbs type (II), which can maintain the normal current and voltage across each of the bulbs when any of series connected bulbs burn out. The string includes a shunt in every bulb assemblies, which has an auxiliary conductive apparatus including an SCR (silicon controlled rectifier), a TRIAC (THYristor), a DIAC (trigger diode), or a Transistor with resistors and is parallel connecting related to the bulb. The shunt will thus provide a secure electrical connection of the light string whenever any bulb is burn out or broken.

Claims

1. A continuous current control circuit module of series string bulbs including a power source and a main electrical wire connecting with many bulb assemblies, wherein each bulb assembly includes a shell, a bulb holder, and a bulb;

the improvement comprising;

a secure shunt having an auxiliary conductive apparatus including a TRIAC (THYristor) provided to connect bi-directionally within the bulb assembly in parallel to the bulb, and at least one resistor connected in the secure shunt that provides a resistance slightly higher than the resistance of the bulb.

2. A continuous current control circuit module of series string bulbs as claimed in claim 1, wherein the secure shunt includes an auxiliary conductive apparatus and only one resistor.

3. A continuous current control circuit module of series string bulbs as claimed in claim 4, wherein the secure shunt includes a plurality of resistors coupled to the TRIAC.