LED lamp with LED board brace

• US 9,927,100 B2
• Filed: 03/25/2014
• Issued: 03/27/2018
• Est. Priority Date: 03/25/2014
• Status: Active Grant

• Current Assignee: IDEAL Industries Lighting, LLC (Ideal Industries Incorporated)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Rowlette, Jr., John R., Power, David
• Primary Examiner(s): Breval, Elmito
• Assistant Examiner(s): Apenteng, Jessica M
• Application Number:
  US14/224,531
• Publication Number:
  US 20150276138A1
• Time in Patent Office: 1,463 Days
• Field of Search: 362223, 36221701, 36224902, 36224901
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• 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 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A LED lamp includes an elongated at least partially optically transmissive enclosure having a first end and a second end. LEDs are in the enclosure and are operable to emit light through the enclosure when energized through an electrical path. A first pin is mounted to the first end of the enclosure and a second pin mounted to the second end of the enclosure, the first pin and the second pin are in the electrical path. The LEDs are mounted on an LED board. A plurality of discrete braces are spaced along the length of the LED board and are mounted to the LED board. The braces support and position the LED board in the enclosure.

Claims

1. A lamp comprising:

an elongated at least partially optically transmissive enclosure having an inside surface and a first end and a second end;

at least one LED in the enclosure operable to emit light through the enclosure when energized through an electrical path, the at least one LED being mounted on an LED board;

a first pin mounted to the first end of the enclosure and a second pin mounted to the second end of the enclosure, the first pin and the second pin being in the electrical path;

a plurality of discrete braces spaced from one another along the length of the LED board and mounted to the LED board, the plurality of discrete braces engaging the inside surface of the enclosure to support the LED board in the enclosure, each of the plurality of discrete braces comprising a base comprising an outer wall configured to abut the inside surface of the enclosure over the length of the base and a pair of opposed legs extending from the base where each of the pair of opposed legs comprises an upright portion and a flared portion, the upright portion being spaced from the inside surface of the enclosure and the flared portion extending at an angle from the upright portion such that the flared portion contacts the inside surface of the enclosure to form a point contact.

2. The lamp of claim 1 wherein each of the plurality of discrete braces comprise a channel for receiving the LED board.

3. The lamp of claim 1 wherein each of the plurality of discrete braces comprise a first channel and a second channel for receiving opposite longitudinal edges of the LED board.

4. The lamp of claim 1 wherein each of the pair of opposed legs are positioned at a longitudinal edge of the LED board.

5. The lamp of claim 1 wherein the pair of opposed legs are deformed by the engagement of the pair of opposed legs with the enclosure.

6. The lamp of claim 1 wherein the plurality of discrete braces are made of a deformable material.

7. The lamp of claim 1 wherein the plurality of discrete braces are adhered to the enclosure.

8. The lamp of claim 1 wherein the plurality of discrete braces each comprise a first engagement member that engages a second engagement member on the LED board for fixing the position of the plurality of discrete braces relative to the LED board.

9. The lamp of claim 1 wherein the plurality of discrete braces are formed of optically transmissive material.

10. The lamp of claim 1 wherein the enclosure and the plurality of discrete braces are formed of the same optically transmissive material.

11. The lamp of claim 9 wherein the optically transmissive material diffuses light emitted by the at least one LED.

12. The lamp of claim 1 wherein the LED board provides physical support for the at least one LED and forms part of the electrical path.

13. The lamp of claim 1 wherein the LED board comprises a thermally conductive material.

14. The lamp of claim 1 wherein a portion of the enclosure extends behind the LED board.

15. The lamp of claim 1 wherein a width of the enclosure is greater than a width of the LED board.

16. The lamp of claim 1 further comprising a first end cap and a second end cap secured to the enclosure supporting the first pin and the second pin.

17. The lamp of claim 1 wherein the LED board is attached to the plurality of discrete braces using an adherent.

18. The lamp of claim 1 wherein the brace has a first length along the LED board and the opposed legs have a second length along the LED board the second length being smaller than the first length.

19. A lamp comprising:

an at least partially optically transmissive enclosure having an inside surface and defining a horizontal centerline at the diameter of the enclosure;

at least one LED in the enclosure operable to emit light through the enclosure when energized through an electrical path, the at least one LED being mounted on an LED board having a length, the LED board being parallel to the horizontal centerline;

a first pair of pins in the electrical path;

a brace positioned inside of the enclosure and spaced along the length of the LED board and mounted to the LED board, the brace having a first length and extending for less than the length of the LED board such that a second length of the board is unsupported by the brace where the second length is greater than the first length, the brace comprising a base comprising an outer wall configured to abut the inside surface of the enclosure over the length of the base and a pair of opposed legs, each of the pair of opposed legs comprising a first end secured to the base and a second end engaging the inside surface of the enclosure where the second end of each of the opposed legs extends only to the horizontal centerline.

20. The lamp of claim 19 wherein the LED board extends for substantially the entire length of the enclosure.

21. The lamp of claim 19 further comprising a first end cap secured to the enclosure and supporting the first pair of pins.

22. The lamp of claim 19 wherein at least a first resilient conductor connects the first pair of pins to the LED board.

23. A lamp comprising:

an at least partially optically transmissive enclosure comprising an inside surface having a circumference;

at least one LED in the enclosure operable to emit light through the enclosure when energized through an electrical path, the at least one LED being mounted on an LED board;

a first end cap secured to the enclosure and supporting at least a first pin and a second end cap secured to the enclosure and supporting at least a second pin, the at least a first pin and the at least a second pin being in the electrical path;

a first conductor connecting the at least a first pin to the LED board and a second conductor connecting the at least a second pin to the LED board;

a plurality of discrete braces positioned inside of the enclosure and spaced from one another along the length of the LED board, the plurality of discrete braces being separate from and engaging the inside surface of the enclosure to support the LED board in the enclosure, each of the plurality of discrete braces comprising a mounting surface for supporting the LED board and a base configured to abut the inside surface of the enclosure over the length of the base for a portion of the circumference, the base being attached to the inside surface of the enclosure by at least one of adhesive, epoxy, mechanical connector and snap-fit connector.

24. The lamp of claim 23 wherein the first conductor and the second conductor are resilient.

25. The lamp of claim 23 comprising a first contact and a second contact on the LED board, wherein the first conductor and the second conductor are deformed to create a bias force between the first conductor and the first contact and the second conductor and the second contact.

26. The lamp of claim 23 wherein the first pin and the first conductor are one piece.

27. The lamp of claim 23 wherein the second pin and the second conductor are one piece.

28. The lamp of claim 23 wherein the LED board comprises a PCB.

29. The lamp of claim 23 wherein the LED board comprises a PCB with FR4.

30. The lamp of claim 23 wherein a support surface is positioned adjacent the LED board to a side of the LED board opposite the first conductor.