Light bulb with light emitting elements for use in conventional incandescent light bulb sockets

• US 7,726,836 B2
• Filed: 01/14/2008
• Issued: 06/01/2010
• Est. Priority Date: 11/23/2007
• Status: Expired due to Fees

• Current Assignee: Taiming Chen
• Original Assignee: Taiming Chen
• Inventors: Chen, Taiming
• Primary Examiner(s): Sawhney; Hargobind S
• Application Number:
  US12/008,667
• Publication Number:
  US 20090135595A1
• Time in Patent Office: 869 Days
• Field of Search: 362/230, 362/231, 362/227, 362/240, 362/244, 362/365, 362/647, 362/650, 362/800, 362/249.01, 362/249.02, 315/815.R, 340/815.45, 361/760, 361/792
• US Class Current: 362/249.02
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 19/003 Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2113/00 Combination of light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05K 1/14 Structural association of two or more printed circuits providing electric connection to or between printed circuits H05K1/11, H01R12/00
• CPC Class Codes: H05K 2201/048 Second PCB mounted on first PCB by inserting in window or holes of the first PCB
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 3/366 substantially perpendicularly to each other H05K3/361 takes precedence

Abstract

A light bulb apparatus mounted within existing incandescent bulb sockets is comprised of a plurality of interconnecting printed circuit boards (PCBs). An outline shape of any individual PCB is defined in essentially two dimensions a shape or a size of which may vary from one PCB to another. A first portion of this apparatus is equivalent to light bulb cap and is shaped and sized to be fitted into a conventional incandescent bulb socket. At this portion, at least three PCB side edges are lined up against with an inner side wall of a bulb socket. At least one PCB has a tip edge. A second portion of this apparatus is equivalent to a conventional bulb'"'"'s glass bulb, and a plurality of light emitting devices are mounted on surfaces of the said PCBs and are connected to the circuit laid on boards.

Claims

1. A lighting apparatus for replacement of a conventional incandescent light bulb, said lighting apparatus comprising:

an arrangement of a plurality of interconnecting printed circuit boards (PCBs) forming a three dimensional light bulb shape round sculpture;

each said PCB being a plane of a predetermined thickness wherein shapes of the planes of the PCBs selected from similar shapes and different shapes;

said three-dimensional light bulb shape comprising a first portion sized to be fitted into an Edison-type light bulb socket;

at least three of the said edges of said plurality of interconnecting PCBs at said first portion being butted against an inner side wall of a conventional incandescent light bulb socket when said PCBs are connected to one another;

at least one PCB tip edge at said first portion protruding from an electrical contacting foot of said bulb socket when said at least three PCBs are connected to one another;

said three-dimensional light bulb shape comprising a second portion in the round sculpture which is equivalent to a glass bulb part of said conventional light bulb;

said second portion serving for enveloping light emitting elements mounted on surfaces of said PCBs, and are connected to circuit-laid on said PCBs; and

wherein each of said side edges has at least one bump;

the bumps on all said side edges are arranged so their outlines align with sectional lines at said inner side wall as the light apparatus is fully screwed into the socket.

2. The light apparatus according to claim 1 further comprising:

wherein said side edges with bumps are elastic extensions of said PCBs;

subsequent to their alignment with the inner sidewall of said bulb socket, said elastic bumps are forcefully insertable into said bulb socket;

said insertion of said elastic bumps into said bulb socket does not require them to be threaded into said bulb socket; and

full insertion of said light apparatus into said bulb socket produces direct contact between said elastic bumps and inner wall sidewall of said bulb socket.

3. The light apparatus according to claim 1 further comprising:

wherein each of said interconnecting PCBs has a slots for interlocking PCBs with one another;

said PCBs has thickness which is equal to or slightly less than a distance which separates side edges of said slots so that said PCBs slide into slots of other of PCBs sideway.