Curved LED tubular lamp

• US 10,408,441 B1
• Filed: 05/07/2019
• Issued: 09/10/2019
• Est. Priority Date: 03/17/2016
• Status: Active Grant

• Current Assignee: Zhejiang Super Lighting Electric Appliance Company Limited
• Original Assignee: Zhejiang Super Lighting Electric
• Inventors: Yao, Wentao, Zhu, Weijun, Lin, Zhaosong, Guo, Zhi
• Primary Examiner(s): Garlen, Alexander K
• Application Number:
  US16/405,510
• Publication Number:
  US 20190264900A1
• Time in Patent Office: 126 Days
• CPC Class Codes: F21K 9/272 Details of end parts, i.e. the parts that connect the light source to a fitting; Arrangement of components within end parts F21K9/278 takes precedence
• CPC Class Codes: F21V 15/015 Devices for covering joints between adjacent lighting devices; End coverings
• CPC Class Codes: F21V 17/101 permanently, e.g. welding, gluing or riveting
• CPC Class Codes: F21V 23/005 the substrate is supporting also the light source
• CPC Class Codes: F21V 25/02 coming into action when lighting device is disturbed, dismounted, or broken
• CPC Class Codes: F21V 29/85 characterised by the material liquid coolants F21V29/56
• CPC Class Codes: F21V 3/061 the material being glass
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2103/37 U-shaped
• CPC Class Codes: F21Y 2107/70 on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A curved LED tubular lamp is disclosed. The curved LED tubular lamp includes a curved lamp tube having two straight segments and a curve segment disposed between the two straight segments; at least one flexible substrate having a plurality of LEDs mounted thereon, and at least one positioning pillar formed on the inner surface of the curve segment of the curved lamp tube, wherein each of the two straight segments and the curve segment have LEDs disposed therein, and wherein the flexible substrate is disposed in at least the curve segment.

Claims

1. A curved LED tubular lamp, comprising:

a curved lamp tube having two straight segments, and a curved segment disposed between the two straight segments; and

a first light board and a second light board respectively disposed in each of the two straight segments;

wherein each of the first light board and second light board has a plurality of LEDs disposed thereon;

wherein the first light board and the second light board are separated into at least two segments;

wherein the first light board includes a first straight portion disposed in a first straight segment of the two straight segments of the curved lamp tube, and a first curved portion disposed in a first part of the curved segment of the curved lamp tube; and

wherein the second light board includes a second straight portion disposed in a second straight segment of the two straight segments of the curved lamp tube, and a second curved portion disposed in a second part of the curved segment of the curved lamp tube.

2. The curved LED tubular lamp of claim 1, wherein the curved segment comprises a middle connecting segment used to visually connect the plurality of LEDs of the first light board and the second light board, and the middle connecting segment is separated into a first middle connecting segment and a second middle connecting segment, wherein the first middle connecting segment is part of the first light board, and the second middle connecting segment is part of the second light board.

3. The curved LED tubular lamp of claim 2, wherein the length of the first light board is equal to the length of the second light board.

4. The curved LED tubular lamp of claim 1, wherein the curved LED tubular lamp further comprises one or more driving circuits, disposed in one or both of the straight segments of the curved LED tubular lamp.

5. The curved LED tubular lamp of claim 1, wherein the curved LED tubular lamp includes two straight tubes and a rear supporter disposed between the two straight tubes, the rear supporter including a first piece having a protruded edge extending along an edge of the first piece and a second piece having a trench extending along an edge of the second piece, wherein the protruded edge is inserted into the trench, providing tight assembly of the rear supporter.

6. The curved LED tubular lamp of claim 1, wherein the second straight portion of the second light board is attached on an inner wall of the second straight segment of the two straight segments of the curved lamp tube, and the second curved portion is attached to the second part of the curved segment of the curved lamp tube.

7. The curved LED tubular lamp of claim 1, wherein the first light board and the second light board are separated to have a gap between each of the at least two segments.

8. The curved LED tubular lamp of claim 1, wherein an end of the first curved portion faces an end of the second curved portion.

9. The curved LED tubular lamp of claim 8, wherein a gap is formed between the end of the first curved portion and the end of the second curved portion.

10. The curved LED tubular lamp of claim 1, wherein:

the first curved portion is attached to the first part of the curved segment of the curved lamp tube; and

the second curved portion is attached to the second part of the curved segment of the curved lamp tube.

11. A curved LED tubular lamp, comprising:

a curved lamp tube having two straight segments, and a curved segment disposed between the two straight segments; and

a first light board and a second light board respectively disposed in each of the two straight segments;

wherein each of the first light board and second light board has a plurality of LEDs disposed thereon;

wherein the first light board and the second light board are two separate pieces;

wherein the first light board includes a first straight portion disposed in a first straight segment of the two straight segments of the curved lamp tube, and a first curved portion disposed in a first part of the curved segment of the curved lamp tube; and

wherein the second light board includes a second straight portion disposed in a second straight segment of the two straight segments of the curved lamp tube, and a second curved portion disposed in a second part of the curved segment of the curved lamp tube.

12. The curved LED tubular lamp of claim 11, wherein the curved segment comprises a middle connecting segment used to visually connect the plurality of LEDs of the first light board and the second light board, and the middle connecting segment is separated into a first middle connecting segment and a second middle connecting segment, wherein the first middle connecting segment is part of the first light board, and the second middle connecting segment is part of the second light board.

13. The curved LED tubular lamp of claim 12, wherein the length of the first light board is equal to the length of the second light board.

14. The curved LED tubular lamp of claim 11, wherein the curved LED tubular lamp further comprises one or more driving circuits, disposed in one or both of the straight segments of the curved LED tubular lamp.

15. The curved LED tubular lamp of claim 11, wherein the curved LED tubular lamp includes two straight tubes and a rear supporter disposed between the two straight tubes, the rear supporter including a first piece having a protruded edge extending along an edge of the first piece and a second piece having a trench extending along an edge of the second piece, wherein the protruded edge is inserted into the trench, providing tight assembly of the rear supporter.

16. The curved LED tubular lamp of claim 11, wherein the second straight portion of the second light board is attached on an inner wall of the second straight segment of the two straight segments of the curved lamp tube, and the second curved portion is attached to the second part of the curved segment of the curved lamp tube.

17. The curved LED tubular lamp of claim 11, wherein the first light board and the second light board are separated to have a gap, in the curved segment of the curved lamp tube, between the two pieces.

18. The curved LED tubular lamp of claim 11, wherein an end of the first curved portion faces an end of the second curved portion.

19. The curved LED tubular lamp of claim 18, wherein a gap is formed between the end of the first curved portion and the end of the second curved portion.

20. The curved LED tubular lamp of claim 11, wherein:

the first curved portion is attached to the first part of the curved segment of the curved lamp tube; and

the second curved portion is attached to the second part of the curved segment of the curved lamp tube.