Method of producing LED lighting apparatus and apparatus produced thereby

• US 9,194,556 B1
• Filed: 02/22/2013
• Issued: 11/24/2015
• Est. Priority Date: 02/22/2012
• Status: Expired due to Fees

• Current Assignee: Theodore G. Nelson
• Original Assignee: Theodore G. Nelson
• Inventors: Nelson, Theodore G., Koskela, David
• Primary Examiner(s): Green, Tracie Y
• Application Number:
  US13/774,941
• Time in Patent Office: 1,005 Days
• Field of Search: 362/235
• US Class Current: 1/1
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21K 9/90 Methods of manufacture
• CPC Class Codes: F21V 19/005 by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 47/10 Controlling the light source
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Disclosed is an LED bulb having many advantages over previous bulbs. The bulb is designed with ease of fabrication and low cost in mind. A main support is made of chromed copper, used for both its reflectivity, its readily availability, and its relative low cost. A collection of bright LEDs are electrically coupled to a driving circuit formed on a board that is housed within the main support. The LEDs are mounted on a circuit board flexible enough to form into a desired shape while rigid enough to withstand normal movements. The LED circuit board includes multiple polished or shiny areas, also called lands or panels made to reflect light away from the bulb. The panels are electrically insulated from the operating circuit and prevent injury should the bulb be broken and the components be touched, even while operating.

Claims

1. A method of forming a bulb comprising a plurality of Light Emitting Diodes (LEDs), the method comprising:

forming a printed circuit board including a plurality of LED panels having electrical connections therebetween;

mounting the plurality of LED devices, respectively, to the plurality of panels;

bending the printed circuit board into a three-dimensional shape;

inserting a main driving circuit within a longitudinal support;

coupling the main driving circuit to the printed circuit board through a tab extending from the main driving circuit;

aligning the printed circuit board to the tab;

mechanically supporting the printed circuit board with the tab; and

mounting the shaped printed circuit board and the longitudinal support into the bulb.

2. The method of forming a bulb comprising a plurality of LED devices according to claim 1, further comprising:

pre-weakening the printed circuit board at defined areas between the plurality of panels.

3. The method of forming a bulb comprising a plurality of LED devices according to claim 2, in which pre-weakening the printed circuit board at defined areas between the plurality of panels comprises forming grooves in the printed circuit broad, the grooves extending partially through a thickness of the printed circuit board.

4. The method of forming a bulb comprising a plurality of LED devices according to claim 1, further comprising:

placing the shaped printed circuit board into a receiver including a plurality of receiving portions structured to receive at least some of the plurality of panels.

5. The method of forming a bulb comprising a plurality of LED devices according to claim 4, further comprising:

securing the shaped printed circuit board to the receiver.

6. The method of forming a bulb comprising a plurality of LED devices according to claim 1, further comprising:

providing a receiver for the shaped printed circuit board and the longitudinal support; and

securing the shaped printed circuit board to the receiver.

7. The method of forming a bulb comprising a plurality of LED devices according to claim 6, further comprising:

securing a bulb that covers the shaped printed circuit board to the receiver.

8. A light bulb including a plurality of Light Emitting Diodes (LEDs), comprising:

a driving circuit board;

a longitudinal support structured to receive the driving circuit board;

a board support structured to engage the longitudinal support;

a generally dome-shaped printed circuit board having a plurality of LEDs mounted thereon and coupled to the board support, the dome-shaped printed circuit board including a number of individual LED panels structured to support individual ones of the LEDs, and the individual panels connected to one another through at least one circuit trace on the printed circuit board, the dome-shaped printed circuit board further including weakening grooves between the individual panels and partially through a thickness of the dome-shaped printed circuit;

an electrical connection at a first end of the bulb; and

a cover at a second end opposite the first end of the bulb, the cover structured to cover the dome-shaped printed circuit board.

9. The light bulb including a plurality of LEDs according to claim 8, in which the board support is made of plastic and has a plurality of receiving areas structured to receive the individual panels of the printed circuit board.

10. The light bulb including a plurality of LEDs according to claim 8, further comprising:

a component structured to electrically couple the light bulb to a lamp socket.

11. The light bulb including a plurality of LEDs according to claim 8, in which the printed circuit board comprises twelve individual panels.

12. The light bulb including a plurality of LEDs according to claim 8, in which an outer surface of the panels are electrically isolated from driving circuitry of the bulb.

13. The light bulb including a plurality of LEDs according to claim 12, in which the outer surface of the panels is reflective.