Surface mounted LED lamp

• US 6,252,350 B1
• Filed: 07/31/1998
• Issued: 06/26/2001
• Est. Priority Date: 07/31/1998
• Status: Expired due to Term

• Current Assignee: Andres Alvarez
• Original Assignee: Andres Alvarez
• Inventors: Alvarez, Andres
• Primary Examiner(s): Patel, Ashok
• Assistant Examiner(s): Gerike, Matthew J.
• Application Number:
  US09/126,786
• Time in Patent Office: 1,061 Days
• Field of Search: 315/406, 315/407, 315/408, 315/368.18, 362/226, 362/249, 362/800, 313/498, 313/503, 313/512, 257/82, 257/79, 257/81, 257/99
• US Class Current: 313/498
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21Y 2113/20 of different form
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 13/22 electroluminescent electroluminescent light sources per se H05B33/00
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48247 connecting the wire to a bond pad of the item
• CPC Class Codes: H01L 25/13 the devices being of a type provided for in group H01L33/00
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details

Abstract

A surface mount LED is installed in an incandescent lamp housing. A printed circuit board is used to support the surface mount LED. The printed circuit board has a first conductive path having one end connected to a first terminal and a second conductive path having one end connected to a second terminal. The surface mount LED is installed on the printed circuit board with the anode mounted on the first conductive path and the cathode mounted on the second conductive path. A lamp housing with electrical contacts is used to deliver power to the surface mount LED through the terminals on the printed circuit board. Variations in optical performance can be achieved by combining surface mount LEDs with non-surface mount LEDs.

Claims

1. A surface mounted LED lamp, comprising:

a printed circuit board comprising a first conductive path having one end connected to a first terminal and a second conductive path having one end connected to a second terminal;

a surface mount LED having an anode and a cathode, said LED being installed on the printed circuit board with the anode mounted on the first conductive path and the cathode mounted on the second conductive path; and

a lamp housing having a first electrical contact connected to the first terminal of the printed circuit board, and a second electrical contact connected to the second terminal of the printed circuit board.

2. The surface mounted LED lamp of claim 1 wherein said lamp housing further comprises a conductive case comprising one of the first and second electrical contacts.

3. The surface mounted LED lamp of claim 2 wherein said lamp housing further comprises a plastic body having first and second ends, the surface mount LED being retained at the first end of the plastic body and the conductive case being fitted on the second end of the plastic body.

4. The surface mounted LED lamp of claim 3 wherein said conductive case comprises an open end fitted on the second end of the plastic body and a partially closed opposing end, one of the first and second electrical contacts not comprising the conductive case being supported at said partially closed opposing end by an insulating material.

5. The surface mounted LED lamp of claim 1 wherein said lamp housing further comprises a plastic body comprising a closed end and an opposing open end and further comprising a base extending outward longitudinally from the closed end of the plastic body, said base having two shoulders separated by a central axial ring, the surface mount LED being retained at the open end of the plastic body, each of the shoulders supporting a different one of said first and second electrical contacts.

6. The surface mounted LED lamp of claim 1 wherein said lamp housing further comprises a plastic body having a closed end and an opposing open end, the surface mount LED being retained at the open end of the plastic body, and wherein said first and second electrical contacts extend outward longitudinally from the closed end of the plastic body.

7. The surface mounted LED lamp of claim 6 wherein said first and second electrical contacts extend longitudinally outward from diametrically opposed positions on the plastic body.

8. The surface mounted LED lamp of claim 1 further comprising a non-surface mount LED having anode and cathode leads extending axially outward, said anode lead being connected to the first terminal and said cathode lead being connected to the second terminal.

9. A surface mounted LED lamp, comprising:

a printed circuit board comprising a first conductive path having one end connected to a first terminal and a second conductive path having one end connected to a second terminal and further comprising a third terminal;

a surface mount LED having an anode and a cathode, said LED being installed on the printed circuit board with the anode mounted on the first conductive path and the cathode mounted on the second conductive path;

a non-surface mount LED having anode and cathode leads extending axially outward, said anode lead being connected to the second terminal and said cathode lead being connected to the third terminal;

a lamp housing having a first electrical contact connected to the first terminal of the printed circuit board, and a second electrical contact connected to the second terminal of the printed circuit board.

10. A surface mounted LED lamp, comprising:

a lamp housing;

a printed circuit board disposed in the lamp housing;

a surface mount LED mounted on the printed circuit board; and

a non-surface mount LED mounted on the printed circuit board.

11. The surface mounted LED lamp of claim 10 further comprising a plurality of surface mount LEDs positioned along a periphery of the printed circuit board, and wherein the non-surface mount LED is positioned in a central portion of the printed circuit board.

12. The surface mounted LED lamp of claim 11 wherein the surface mount LEDs are approximately equally spaced apart along the periphery of the printed circuit board.

13. The surface mounted LED lamp of claim 10 further comprising a plurality of surface mount LEDs positioned along a periphery of the printed circuit board, and a plurality of non-surface mount LEDs, wherein one of the non-surface mount LEDs is positioned between each of the surface mount LEDs along the periphery of the printed circuit board.

14. The surface mounted LED lamp of claim 12 wherein one of the surface mount LEDs is positioned between each of the non-surface mount LEDs along the periphery of the printed circuit board.

15. The surface mounted LED lamp of claim 13 wherein a distance between each of the surface mount LEDs and its adjacent non-surface mount LED is approximately equal.

16. A surface mounted LED lamp, comprising:

a lamp housing;

a first printed circuit board disposed in the lamp housing;

at least one non-surface mount LED mounted on the first printed circuit board;

a second printed circuit board disposed in the lamp housing longitudinally displaced from the first printed circuit board, said second printed circuit board having an aperture aligned with the non-surface mount LED; and

at least one surface mount LED mounted on the second printed circuit board.

17. The surface mounted LED lamp of claim 16 further comprising a spacer disposed between the first and second printed circuit boards to maintain the longitudinal displacement therebetween.

18. The surface mounted LED lamp of claim 16 further comprising a plurality of non-surface mount LEDs positioned along a periphery of the first printed circuit board, and a plurality of surface mount LEDs positioned along a periphery of the second printed circuit board, said second printed circuit board having an aperture aligned with each of the non-surface mount LEDs on the first printed circuit board.

19. The surface mounted LED lamp of claim 18 wherein the non-surface mount LEDs are approximately equally spaced apart along the periphery of the first printed circuit board, and the surface mount LED'"'"'s are approximately equally spaced apart along the periphery of the second printed circuit board.

20. A surface mounted LED lamp, comprising:

a lamp housing; and

a lamp having a base supported by the lamp housing, a cap, and a plurality of printed circuit boards extending longitudinally between the base and the cap, each of the printed circuit boards having at least one surface mount LED disposed on an outward surface thereof.

21. The surface mounted LED lamp of claim 20 wherein said printed circuit boards are approximately equally spaced apart along the periphery of the base and cap.

22. The surface mounted LED lamp of claim 21 wherein each of the printed circuit boards comprises a plurality of surface mount LEDs approximately equally spaced apart along each of the printed circuit boards, each surface mount LED being positioned on an outward surface of its respective printed circuit board.

23. The surface mounted LED lamp of claim 21 wherein said cap comprises a conductive path and a return conductive path, said conductive and return conductive paths being connected to each of the printed circuit boards.

24. The surface mounted LED lamp of claim 23 wherein said lamp housing comprises first and second electrical contacts, and wherein said surface mounted LED lamp further comprises voltage dropping means for dropping a voltage applied between the first and second electrical contacts, said voltage dropping means being positioned between the base and the cap of the lamp.

25. The surface mounted LED lamp of claim 24 wherein said dropping means comprises a resistor or a diode.

26. A surface mounted LED lamp, comprising:

a lamp housing; and

a lamp having a base supported by the lamp housing, a cap, and a printed circuit board extending longitudinally between the base and the cap, the printed circuit board having at least one surface mount LED disposed thereon.