Electrical connections for a light-emitting diode lamp

• US 9,212,801 B2
• Filed: 11/21/2012
• Issued: 12/15/2015
• Est. Priority Date: 11/23/2011
• Status: Active Grant

• Current Assignee: Huizhou Light Engine Limited
• Original Assignee: Huizhou Light Engine Limited
• Inventors: Leung, Tean Sue-Anne, Li, Eddie Ping Kuen
• Primary Examiner(s): Dzierzynski, Evan
• Assistant Examiner(s): Kryukova, Erin
• Application Number:
  US13/683,838
• Publication Number:
  US 20130128573A1
• Time in Patent Office: 1,119 Days
• Field of Search: 362/294, 362/307, 362/311.01, 362/311.02, 362/363, 362/646, 362/373, 362/650, 362/651, 362/249.02
• 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: 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 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/87 Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05K 1/0209 External configuration of printed circuit board adapted for heat dissipation, e.g. lay-out of conductors, coatings
• CPC Class Codes: H05K 2201/066 Heatsink mounted on the surface of the PCB heatsink inserted in the PCB H05K2201/10416
• CPC Class Codes: H05K 2201/09027 Non-rectangular flat PCB, e.g. circular
• CPC Class Codes: H05K 2201/10106 Light emitting diode [LED]
• CPC Class Codes: H05K 2201/10189 Non-printed connector
• CPC Class Codes: H05K 2201/10318 Surface mounted metallic pins
• CPC Class Codes: H05K 3/366 substantially perpendicularly to each other H05K3/361 takes precedence
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.
• CPC Class Codes: Y10T 29/53174 Means to fasten electrical component to wiring board, base, or substrate

Abstract

An LED lamp comprises: a lamp base having live and neutral contacts for supplying electrical power to the LED lamp; a substantially hollow lamp holder; a PCB assembly comprising: first and second connection pins; a table portion attached to the top of each of the first and second connection pins; and at least one connecting structure formed at a top surface of the table portion and electrically coupled to the first and second connection pins; an LED PCB comprising at least one LED affixed to a PCB and an LED PCB connector having connector pins electrically coupled to the at least one LED and to the at least one connecting structure of the table portion; and a heat sink being configured to thermally couple to the at least one LED, and a globe having a bottom portion which is thermally coupled to an outer surface of the heat sink.

Claims

1. An LED lamp, comprising:

(a) a lamp base having a live contact and a neutral contact for supplying electrical power to the LED lamp;

(b) a substantially hollow lamp holder, the lamp holder having a lower portion seated within an upper portion of the lamp base and first and second wing portions disposed along an interior surface of the lamp holder and extending outwardly from the lamp holder and away from the lamp base;

(c) a PCB assembly comprising;

(i) first and second connection pins, each having a lower end portion, the lower end portion of the first connection pin contacting the live contact of the lamp base and the lower end portion of the second connection pin contacting the neutral contact of the lamp base, the first and second connections pins are in parallel to each other,

(ii) a table portion attached to the top of each of the first and second connection pins, and perpendicular to a lengthwise direction of the first and second connection pins, wherein the first and second wing portions are configured to accept the table portion such that the table portion is disposed between the first and second wing portions; and

(iii) at least one connecting structure formed at a top surface of the table portion and electrically coupled to the first and second connection pins;

(d) an LED PCB comprising at least one LED affixed to a PCB and an LED PCB connector having connector pins electrically coupled to the at least one LED and to the at least one connecting structure of the table portion, the connector pins are in parallel to each other;

(e) a heat sink comprising;

a top surface, to which the LED PCB is thermally coupled, the top surface having an aperture through which extend the connector pins of the LED PCB connector, the heat sink being configured to thermally couple to the at least one LED;

(f) a vertical PCB configured to electrically couple the at least one connecting structure of the table portion to the connector pins of the LED PCB connector; and

(g) a globe having a bottom portion which is thermally coupled to an outer surface of the heat sink so as to permit heat to pass from the heat sink to the outside environment through the bottom portion of the globe,

wherein the first and second wing portions each comprise a slot configured to accept the vertical PCB, side edges of the vertical PCB are seated in the respective slots of the first and second wing portions, and a bottom edge of the vertical PCB is structured to contact the at least one connecting structure of the table portion.

2. The LED lamp according to claim 1, wherein the at least one connecting structure of the table portion comprises clips in which the bottom edge of the vertical PCB is seated.

3. The LED lamp according to claim 1, wherein the lamp holder further comprises an upper rim configured to mate with a lower edge of the globe when the LED lamp is assembled.

4. The LED lamp according to claim 1, wherein at least one lower end of the first and second connection pins of the PCB assembly is spring loaded.

5. The LED lamp according to claim 1, wherein the heat sink is cylindrical in shape.

6. The LED lamp according to claim 1, wherein the heat sink is made of a material selected from a group consisting of aluminum, copper, alloys of aluminum and copper, steel, cast iron, plastic, and a combination thereof.

7. The LED lamp according to claim 1, wherein the lower portion is cylindrical.

8. A method of electrically coupling at least one LED of an LED lamp to a lamp base having a live contact and a neutral contact for supplying electrical power to the LED lamp, the method comprising:

(a) providing a lamp holder configured to seat within the lamp base, the lamp holder including first and second wing portions disposed along an interior surface of the lamp holder and extending outwardly from the lamp holder and away from the lamp base;

(b) providing a PCB assembly between the first and second wing portions, the PCB assembly comprising;

(i) first and second connection pins, each having a lower end portion, the lower end portion of the first connection pin contacting the live contact of the lamp base and the lower end portion of the second connection pin contacting the neutral contact of the lamp base, the first and second connections pins are in parallel to each other,

(ii) a table portion attached to the top of each of the first and second connection pins, and perpendicular to a lengthwise direction of the first and second connection pins, wherein the first and second wing portions are configured to accept the table portion such that the table portion is disposed between the first and second wing portions; and

(iii) at least one connecting structure formed at a top surface of the table portion and electrically coupled to the first and second connection pins;

(c) providing an LED PCB comprising at least one LED affixed to a PCB and an LED PCB connector having connector pins electrically coupled to the at least one LED and to the at least one connecting structure of the table portion;

(d) providing a vertical PCB configured to electrically couple the at least one connecting structure of the table portion to the connector pins of the LED PCB connector, wherein the first and second wing portions each comprise a slot configured to accept the vertical PCB, and wherein side edges of the vertical PCB are seated in the respective slots of the first and second wing portions, and a bottom edge of the vertical PCB is structured to contact the at least one connecting structure of the table portion; and

(e) actively electrically coupling the at least one LED to the lamp base by coupling the lower end portions of the first and second connection pins to the live and neutral contacts of the lamp base and by actively electrically coupling the at least one connecting structure to the first and second connection pins.

9. The method according to claim 8, wherein the at least one connecting structure of the table portion comprises clips into which the bottom edge of the vertical PCB is seated.

10. The method according to claim 8, wherein at least one lower end of the first and second connection pins of the PCB assembly is spring loaded.

11. A device for electrically coupling at least one LED of an LED lamp to a lamp base having a live contact and a neutral contact for supplying electrical power to the LED lamp, the device comprising:

a lamp holder seated within the lamp base, the lamp holder including first and second wing portions disposed along an interior surface of the lamp holder and extending outwardly from the lamp holder and away from the lamp base;

a PCB assembly disposed within the lamp holder, comprising;

(a) first and second connection pins, each having a lower end portion, the lower end portion of the first connection pin contacting the live contact of the lamp base and the lower end portion of the second connection pin contacting the neutral contact of the lamp base, the first and second connection pins are in parallel to each other,

(b) a table portion attached to a top of each of the first and second connection pins, and perpendicular to a lengthwise direction of the first and second connection pins, wherein the first and second wing portions are configured to accept the table portion such that the table portion is disposed between the first and second wing portions; and

(c) at least one connecting structure formed at a top surface of the table portion and electrically coupled to the first and second connection pins; and

a vertical PCB configured to electrically couple the at least one connecting structure of the table portion to the at least one LED, wherein the first and second wing portions each comprise a slot configured to accept the vertical PCB, side edges of the vertical PCB are seated in the respective slots of the first and second wing portions, and a bottom edge of the vertical PCB is structured to contact the at least one connecting structure of the table portion.

12. The device according to claim 11, further comprising:

an LED PCB comprising the at least one LED affixed to a PCB and an LED PCB connector having connector pins electrically coupled to the at least one LED of the LED PCB and to the at least one connecting structure of the table portion, the connector pins are in parallel to each other.

13. The device according to claim 11, wherein the at least one connecting structure of the table portion comprises clips into which the bottom edge of the vertical PCB is seated.

14. The device according to claim 11, wherein at least one lower end of the first and second connection pins of the PCB assembly is spring loaded.

15. An LED lamp having at least one LED, comprising:

a lamp base having a live contact and a neutral contact for supplying electrical power to the LED lamp;

a lamp holder comprising;

a lower portion seated within an upper portion of the lamp base, and

first and second wing portions disposed along an interior surface of the lamp holder and extending outwardly from the lamp holder in a first direction and away from the lamp base;

a first circuit board assembly comprising;

first and second connection pins extending substantially parallel to the first direction and configured to connect to the live contact and the neutral contact, respectively; and

a table portion comprising a connector on a first surface of the table portion, the connector being electrically coupled to the first and second connection pins connected to a second surface of the table portion and to the live and neutral contacts of the lamp base via the first and second connection pins, the first and second surfaces extending in respective planes that are substantially perpendicular to the first direction, wherein the first and second wing portions are configured to accept the table portion such that the table portion is disposed between the first and second wing portions; and

a second circuit board assembly configured to electrically couple the connector of the table portion to the at least one LED, wherein the first and second wing portions each comprise a slot configured to accept the second circuit board assembly, wherein opposite side edges of the second circuit board assembly are seated in the respective slots of the first and second wing portions, and a bottom edge of the second circuit board assembly is configured to contact the connector of the table portion.