Light emitting diode assembly for use as an aircraft position light

• US 6,244,728 B1
• Filed: 12/13/1999
• Issued: 06/12/2001
• Est. Priority Date: 12/13/1999
• Status: Expired due to Term

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Shander, Mark S., Cote, Richard A., King, David F.
• Primary Examiner(s): Tso, Laura K.
• Assistant Examiner(s): TRUONG, BAO Q
• Application Number:
  US09/459,550
• Time in Patent Office: 547 Days
• Field of Search: 362/249, 362/80, 362/800, 362/555, 362/236, 362/61, 362/31, 340/945, 340/948, 340/953, 340/954, 340/958, 340/815.45, 340/815.47, 340/815.73, 345/39, 345/46, 345/82, 345/205, 345/206
• US Class Current: 362/249.06
• CPC Class Codes: B64D 2203/00 Aircraft or airfield lights using LEDs
• CPC Class Codes: B64D 47/06 for indicating aircraft presence
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21W 2107/30 for aircraft
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05K 1/14 Structural association of two or more printed circuits providing electric connection to or between printed circuits H05K1/11, H01R12/00
• CPC Class Codes: H05K 1/18 Printed circuits structurally associated with non-printed electric components H05K1/0201, H05K1/023, H05K1/0243, and H05K1/16 take precedence
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A light emitting diode (LED) assembly is provided for use as an airplane position light which meets Federal Aviation Regulation lighting requirements and lasts longer than conventional incandescent and halogen position lights, while being relatively lightweight, cheap, and requiring relatively little power for operation. The LED assembly includes a first plurality of circuit boards in electrical communication with a base circuit board, wherein each circuit board of the first plurality of circuit boards is parallel to every other one of the first plurality of circuit boards, but is disposed at an acute angle to the base circuit board. The LED assembly also includes a second plurality of circuit boards in electrical communication with the base circuit board, wherein each circuit board of the second plurality of circuit boards is disposed at a different angle to the base circuit board such that the second plurality of circuit boards form a fan-shaped structure. In addition, the LED assembly includes a plurality of light emitting diodes electrically mounted to said first plurality of circuit boards and to said second plurality of circuit boards. The circuit boards and LEDs may be identical to facilitate construction and maintenance of the aircraft position light, and to decrease the cost of manufacturing the aircraft position light. Furthermore, LEDs may be chosen to comply with Federal Aviation Regulations lighting color requirements, obviating the need for a position light cover.

Claims

1. A light emitting diode (LED) assembly for use as an aircraft position light, comprising:

a first plurality of circuit boards in electrical communication with a base circuit board, wherein each circuit board of the first plurality of circuit boards is parallel to each other circuit board of the first plurality of circuit boards, and wherein each circuit board is positioned at the same acute angle relative to the base circuit board;

a second plurality of circuit boards in electrical communication with the base circuit board, wherein each circuit board of the second plurality of circuit boards is positioned at a different angle relative to the base circuit board such that the second plurality of circuit boards form a fan-shaped structure; and

a plurality of light emitting diodes (LEDs) electrically mounted to said first plurality of circuit boards and to said second plurality of circuit boards.

2. The LED assembly of claim 1, wherein each circuit board of the first plurality of circuit boards and the second plurality of circuit boards is identical to every other circuit board of the first plurality of circuit boards and the second plurality of circuit boards.

3. The LED assembly of claim 1, wherein the plurality of LEDs mounted to said first plurality of circuit boards and to said second plurality of circuit boards are identical.

4. The LED assembly of claim 1, wherein the plurality of LEDs mounted to a respective one of said first plurality of circuit boards and said second plurality of circuit boards form a fan-like pattern so that at least one LED of the plurality of LEDs is disposed at an angle relative to another LED of the plurality of LEDs.

5. The LED assembly of claim 1, wherein the plurality of LEDs comprise rows of LEDs, and wherein each row of LEDs is electrically mounted to a respective circuit board of the first plurality of circuit boards and the second plurality of circuit boards.

6. The LED assembly of claim 1, wherein each circuit board of the first plurality of circuit boards and the second plurality of circuit boards has opposed first and second edges, wherein each circuit board is mounted to the base circuit board at the first edge, and wherein the plurality of LEDs are mounted to said each circuit board at the second edge.

7. The LED assembly of claim 6, wherein each circuit board of the first plurality of circuit boards and the second plurality of circuit boards defines an axis that lies in a plane that is substantially perpendicular to the base circuit board and that extends from the first edge of said each circuit board to the opposed second edge, and wherein at least one LED of the plurality of LEDs mounted to said each circuit board is aligned with the axis.

8. The LED assembly of claim 6, wherein the second edge of each circuit board includes a plurality of edge portions that cooperate to define an arched edge.

9. The LED assembly of claim 8, wherein the plurality of LEDs are mounted to the first plurality of circuit boards and the second plurality of circuit boards such that the LEDs abut each of the plurality of edge portions.

10. A light emitting diode (LED) assembly for use as an aircraft position light, comprising:

a base circuit board;

a plurality of circuit boards mounted to the base circuit having opposed first and second edges, wherein each circuit board is in electrical and mechanical connection with the base circuit board along the first edge of the circuit board, and

a plurality of light emitting diodes (LEDs) in electrical communication with each circuit board and abutting the second edge of the circuit board.

11. The LED assembly of claim 10, wherein at least one of the plurality of circuit boards is angled relative to another one of the plurality of circuit boards.

12. The LED assembly of claim 10, wherein at least one of the plurality of LEDs is angled with respect to another one of the plurality of LEDs.

13. The LED assembly of claim 10, wherein the second edge of each circuit board includes a plurality of edge portions that cooperate to define an arched edge.

14. The LED assembly of claim 10, wherein each circuit board of the plurality of circuit boards is identical.

15. The LED assembly of claim 10, wherein each LED of the plurality of LEDs is identical.

16. The LED assembly of claim 13, wherein the plurality of LEDs are mounted to each circuit board such that at least one LED abuts each of the plurality of edge portions.

17. A light emitting diode (LED) assembly for use as an aircraft position light, comprising:

a base circuit board;

a plurality of light emitting diodes (LEDs) in electrical communication with said base circuit board;

an optical cover located adjacent said plurality of LEDs, wherein the optical cover comprises a first optical section and a second optical section, wherein;

said first optical section comprises a first plurality of faces located on a side of the optical cover opposite said plurality of LEDs, wherein each face of said first plurality of faces is parallel to each other face of said first plurality of faces, and wherein each face of said first plurality of faces is positioned at the same acute angle relative to the base circuit board;

said second optical section comprising a second plurality of faces located on a side of the optical cover opposite said plurality of LEDs, wherein each face of said second plurality of faces is positioned at a different angle relative to the base circuit board than each other face of said second plurality of faces.

18. The LED assembly of claim 17, wherein each of the plurality of LEDs are identical.

19. The LED assembly of claim 17, wherein each face of the first plurality of faces and each face of the second plurality of faces correspond to a respective LED of the plurality of LEDs.

20. The LED assembly of claim 17, wherein each face of the first plurality of faces and each face of the second plurality of faces correspond to at least one LED of the plurality of LEDs.