IP Library Granted Patent US 7,075,224
Granted Patent B2
US 7,075,224 · App. 10/830,261 · Granted Jul 11, 2006

Light emitting diode bulb connector including tension reliever

Assignee: OSRAM Sylvania Inc.
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Quick Facts
Patent No.
US 7,075,224
App. No.
10/830,261
Granted
Jul 11, 2006
Kind
B2
Abstract

An LED light source ( 10 ) comprises a housing ( 12 ) having a base ( 14 ) with a hollow core ( 16 ) projecting therefrom. The core ( 16 ) is substantially conical. A central heat conductor ( 17 ) is centrally located within the hollow core ( 16 ) and is formed from solid copper. A first printed circuit board ( 18 ) is connected to one end of the central heat conductor and a second printed circuit board ( 20 ) is fitted to a second, opposite end of the central heat conductor ( 17 ). The second printed circuit board ( 20 ) has at least one LED ( 24 ) operatively fixed thereto. A plurality of electrical conductors ( 26 ) has proximal ends ( 28 ) contacting electrical traces formed on the second printed circuit board ( 20 ) and distal ends ( 30 ) contacting electrical traces on the first printed circuit board ( 18 ). Each of the electrical conductors ( 26 ) has a tension reliever ( 27 ) formed therein which axially compresses during assembly. A cap ( 32 ) is fitted over the second printed circuit board ( 20 ); and a heat sink ( 34 ) is attached to the base and in thermal contact with the first printed circuit board.

Claims (16)

1. An LED light source comprising:

a housing having a base;

a hollow core projecting from said base, said core being substantially conical;

a central heat conductor centrally located within said hollow core;

a first printed circuit board connected to one end of said central heat conductor;

a second printed circuit board fitted to a second end of said central heat conductor, said second printed circuit board having at least one LED operatively fixed thereto;

a plurality of electrical conductors having proximal ends in contact with electrical traces formed on said second printed circuit board and distal ends in electrical contact with traces on said first printed circuit board, each of said electrical conductors having a tension reliever formed therein;

a cap fitted over said second printed circuit board; and

a heat sink attached to said base and in thermal contact with said first printed circuit board.

2. The LED light source of claim 1 wherein at least two electrical contacts extend from inside said housing to a position outside said housing for connection to a power source.

3. The LED light source of claim 1 wherein an annular O-ring is positioned between said base and said heat sink.

4. The LED light source of claim 1 wherein the outside surface of said hollow core has multiple diameters.

5. The LED light source of claim 4 wherein one of said diameters is provided with a locking flange.

6. The LED light source of claim 1 wherein said at least one LED comprises at least two LEDs.

7. The LED light source of claim 6 wherein said at least two LEDs emit light in the same color.

8. The LED light source of claim 7 wherein said at least two LEDs emit light of different colors.

Assignments (5)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 25, 2021
From: LG INNOTEK CO., LTD.
To: SUZHOU LEKIN SEMICONDUCTOR CO., LTD.
Reel/Frame 056366/0335 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2014
From: OSRAM GMBH
To: LG INNOTEK CO., LTD.
Reel/Frame 032044/0472 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 14, 2013
From: OSRAM SYLVANIA INC.
To: OSRAM GMBH
Reel/Frame 029997/0461 →
MERGER Recorded Dec 19, 2012
From: OSRAM SYLVANIA INC.
To: OSRAM SYLVANIA INC.
Reel/Frame 029496/0526 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 22, 2004
From: COUSHAINE, CHARLES M.
To: OSRAM SYLVANIA INC.
Reel/Frame 015257/0510 →
Continuity (2)
Provisional Application 6050726800 · Sep 30, 2003
Related Publication 20050067942A1 · Mar 31, 2005