LED retrofit lamp and process for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10001262-B2
Application number	US-201314408968-A
Country	US
Kind code	B2
Filing date	Jun 27, 2013
Priority date	Jun 27, 2012
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

Various embodiments may relate to an LED retrofit lamp, including a lamp tube, an LED light engine disposed in the lamp tube, and end caps arranged at two open ends of the lamp tube, the LED light engine including a circuit board and at least one light source disposed on the circuit board. The LED retrofit lamp further includes one pair of retaining structures fixed at two opposite ends of the circuit board, respectively, and at least one pair of elastic tension structures connected to the retaining structures. The elastic tension structure goes through the end cap from one side of the end cap and is locked at the other side of the end cap. In addition, various embodiments may also relate to a process for manufacturing the LED retrofit lamp.

First claim

The invention claimed is:

1. An LED retrofit lamp, comprising:
a lamp tube,
an LED light engine disposed in the lamp tube, and
end caps arranged at two open ends of the lamp tube, the LED light engine comprising a circuit board and at least one light source disposed on the circuit board,
wherein the LED retrofit lamp further comprises:
one pair of retaining structures fixed at two opposite ends of the circuit board, respectively; and
at least one pair of elastic tension structures connected to the retaining structures, and the elastic tension structure goes through the respective end cap from one side of the end cap and is locked at the other side of the end cap,
wherein the at least one pair of elastic tension structures is made of a rubber or a silicone.

2. The LED retrofit lamp according to claim 1 , wherein the retaining structure comprises an intermediate portion, and a first portion and a second portion extending from the intermediate portion, and the first portion is connected with the circuit board, and the second portion is connected with the elastic tension structure.

3. The LED retrofit lamp according to claim 2 , wherein the first portion and the second portion are configured as one pair of first legs and at least one pair of second legs extending from the intermediate portion, respectively, and a connection line of the first legs and a connection line of the second legs intersect each other, and one of the elastic tension structures is connected to one pair of second legs.

4. The LED retrofit lamp according to claim 3 , wherein the first leg comprises a first leg front arm and a first leg rear arm forming a predetermined angle there between, the first leg front arm having one end connected to the intermediate portion and the other end connected to the first leg rear arm.

5. The LED retrofit lamp according to claim 4 , wherein a locking structure is formed at an end of the first leg rear arm, and a first through hole is formed in the circuit board, the locking structure being engaged with the first through hole.

6. The LED retrofit lamp according to claim 3 , wherein the second leg comprises a second leg front arm and a second leg rear arm forming a predetermined angle there between, the second leg front arm having one end connected to the intermediate portion and the other end connected to the second leg rear arm.

7. The LED retrofit lamp according to claim 6 , wherein the second leg has a U-shaped sectional profile which prevents the elastic tension structure from escaping from the second leg.

8. The LED retrofit lamp according to claim 1 , wherein the retaining structure is made by bending a metal plate made by a punching process or a pouring process, wherein preset bent positions are formed on the metal plate.

9. The LED retrofit lamp according to claim 5 , wherein the locking structure is configured as a retainer ring with two free ends, which can be moved away from each other to open the retainer ring or can be overlapped to close the retainer ring.

10. The LED retrofit lamp according to claim 1 , wherein the retaining structure is made of plastic.

11. The LED retrofit lamp according to claim 5 , wherein the locking structure is configured as a hook.

12. The LED retrofit lamp according to claim 2 , wherein the elastic tension structure comprises an elastic rod and two stop portions which are formed on the elastic rod and are spaced from each other at a predetermined interval, wherein a section of the elastic rod between the two stop portions is at least partially arranged in the second portion, and the two stop portions are locked at the other side of the same end cap.

13. The LED retrofit lamp according to claim 12 , wherein the stop portions are configured to have a conic shape, and bottom surfaces of the two conic-shaped stop portions face each other.

14. The LED retrofit lamp according to claim 12 , wherein at least one pair of second through holes are formed in the end cap for the elastic tension structure to go through.

15. The LED retrofit lamp according to claim 12 , wherein the elastic rod and the stop portions are made of a rubber or a silicone and are made in one piece.

16. A process for manufacturing an LED retrofit lamp, the process comprising:
a) providing a lamp tube;
b) providing an LED light engine, the LED light engine comprising a circuit board and at least one light source disposed on the circuit board;
c) providing two retaining structures;
d) fixing the two retaining structures at two opposite ends of the circuit board, respectively;
e) providing at least one pair of elastic tension structures, wherein the at least one pair of elastic tension structures is made of a rubber or a silicone, and connecting the elastic tension structures to the retaining structures;
f) disposing the LED light engine in the lamp tube;
g) providing end caps and arranging the end caps at two open ends of the lamp tube; and
h) enabling the elastic tension structure to go through one end cap from one side of the end cap and be locked at the other side of the same end cap.

17. The process according to claim 16 ,
wherein in c), the retaining structure is formed by bending a metal plate made by a punching process or a pouring process, wherein preset bent positions are formed on the metal plate, at the preset bent positions, and the retaining structure comprises an intermediate portion, and one pair of first legs and at least one pair of second legs extending from the intermediate portion, wherein the first legs and the second legs are arranged to be perpendicular to each other.

18. The process according to claim 17 ,
wherein in c), the first leg is formed by bending in such a manner that a first leg front arm and a first leg rear arm of the first leg form a predetermined angle there between, and that a retainer ring is formed at an end of the first leg rear arm.

19. The process according to claim 17 ,
wherein in c), the second leg is formed by bending in such a manner that the second leg has a U-shaped sectional profile, and that a second leg front arm and a second leg rear arm of the second leg form a predetermined angle there between.

20. An LED retrofit lamp, comprising:
a lamp tube,
an LED light engine disposed in the lamp tube, and
end caps arranged at two open ends of the lamp tube, the LED light engine comprising a circuit board and at least one light source disposed on the circuit board,
wherein the LED retrofit lamp further comprises:
one pair of retaining structures fixed at two opposite ends of the circuit board, respectively; and
at least one pair of elastic tension structures connected to the retaining structures, and the elastic tension structure goes through the respective end cap from one side of the end cap and is locked at the other side of the end cap, wherein the at least one pair of elastic tension structures is made of a rubber or a silicone,
wherein the retaining structure comprises an intermediate portion, and a first portion and a second portion extending from the intermediate portion, and the first portion is connected with the circuit board, and the second portion is connected with the elastic tension structure,
and wherein the first portion and the second portion are configured as one pair of first legs and at least one pair of second legs extending from the intermediate portion, respectively, and a connection line of the first legs and a connection line of the second legs intersect each other, and one of the elastic tension structures is connected to o

Assignees

• Osram Gmbh
• Ledvance Gmbh

Inventors

• Li Hao
• Chen Xiaomian
• Chen Peng
• Liu Tingming

Classifications

• F21K9/90

  Methods of manufacture · CPC title

• F21V19/003 Primary

  Fastening of light source holders, e.g. of circuit boards or substrates holding light sources · CPC title

• F21V19/009 Primary

  the support means engaging the vessel of the source · CPC title

• F21V19/004

  by deformation of parts or snap action mountings, e.g. using clips · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title