Mounting structure for LED lighting systems

• US 7,470,055 B2
• Filed: 08/28/2006
• Issued: 12/30/2008
• Est. Priority Date: 08/29/2005
• Status: Active Grant

• Current Assignee: Optotronic GmbH (Inventronics (Hangzhou), Inc.)
• Original Assignee: Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen mbH (Ams-Osram AG)
• Inventors: Scordino, Alessandro, Hacker, Christian, Maschietto, Alessandro, Scilla, Giovani
• Primary Examiner(s): Choi; Jacob Y
• Application Number:
  US11/510,741
• Publication Number:
  US 20070047243A1
• Time in Patent Office: 855 Days
• Field of Search: 362/238, 362/240, 362/223, 362/225, 362/800, 362/640, 362/646, 362/652, 362/659, 362/657, 362/222, 362/249, 362/547, 362/218, 362/264, 362/294
• US Class Current: 362/640
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 21/005 for several lighting devices in an end-to-end arrangement, i.e. light tracks
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A mounting structure for LED lighting sources, includes a support body having attached on one side thereof a circuit board for mounting the LED lighting sources. The circuit board is preferably a printed-circuit board with conductive traces to feed electrical power to the LED lighting sources. The support body is in the form of an elongated bar or a box with a linear, round, square, hexagonal or octagonal shape. The support body is a drawn or molded body of a lightweight material and preferably exhibits good heat transfer properties. The support body includes a back side for mounting the structure on a supporting surface, such back side possibly having associated a heat dissipation fixture. Additionally, the support body may have free space inside and/or be at least partially apertured to permit cooling air flow for a driver circuit for driving the LED lighting source.

Claims

1. An LED lighting system comprising at least two homologous mounting structures, each of the homologous mounting structures comprising:

at least one LED lighting source;

a support body comprising a hollow body having a free space inside;

a circuit board for mounting said at least one LED lighting source, said circuit board having conductive traces to feed electrical power to said at least one LED lighting source, wherein the circuit board is attached to a top of the support body;

connectors to allow cascaded connection to other homologous mounting structures, said connectors comprising;

a first connector receiving power from a power source or from a connector of a first one of the homologous mounting structures, a second connector providing the received power to a connector of a second one of the homologous mounting structures, wherein the first and second connectors are electrically connected such that a voltage of the power received at the first connector is substantially the same as a voltage of the power provided at the second connector, and wherein the first and second connectors are complementary with respect to one another; and

a driver circuit for driving the at least one LED lighting source, wherein;

the driver circuit provides electrical power received at the first connector to the at least one LED lighting source via the conductive traces of the circuit board, the driver circuit controls a drive current provided to the at least one LED lighting source, and the driver circuit is mounted within the free space of the support body, and the driver circuit provides power to and controls the current of only the at least one LED lighting source mounted on the circuit board of the mounting structure, wherein the at least one LED lighting source of each of the mounting structures is independently driven with respect to the LED lighting source of another mounting structure.

2. The structure of claim 1, wherein said circuit board is a printed-circuit board.

3. The structure of claim 2, wherein said circuit board has said conductive traces printed thereon.

4. The structure of claim 1, wherein said at least one LED lighting source includes an assembly having protruding contacts for contacting said conductive traces.

5. The structure of claim 1, wherein said support body is in the form of an elongated bar.

6. The structure of claim 1, wherein said support body is in the form of a box with a shape selected out of linear, round, square, hexagonal, octagonal.

7. The structure of claim 1, wherein said support body is a drawn or molded body.

8. The structure of claim 1, wherein said support body is of a lightweight material.

9. The structure of claim 1, wherein said support body is aluminum.

10. The structure of claim 1, wherein said support body is of a plastics material.

11. The structure of claim 1, wherein said support body is of a material having a good heat transfer coefficient.

12. The structure of claim 1, wherein said support body includes passages for mounting retain elements.

13. The structure of claim 1, wherein said support body includes a back side for mounting the structure on a supporting surface.

14. The structure of claim 1, wherein said support body has coupled a heat dissipation fixture.

15. The structure of claim 1, wherein said support body is at least partially apertured to permit cooling air flow therethrough.

16. The structure of claim 1, wherein electrical connection between said driver circuit and said at least one LED lighting source includes one of a flexible portion of a driver board, a flexible cable or flexible ribbon-like flat wiring.

17. The structure of claim 16, wherein said flexible electrical connection extends through an opening in said support body.

18. The structure of claim 1, wherein it includes said connectors arranged at opposite ends of said support body to permit plug-and-socket connection of one connector carried by the structure with at least another, complementary connector carried by a neighboring structure.

19. The structure of claim 1, wherein said support body is configured for linear series connection of a plurality of homologous structures.

20. The structure of claim 1, wherein said support body is configured for parallel, side-by-side connection of a plurality of homologous structures.

21. The structure of claim 1, wherein said support body is configured for constant pitch mounting a plurality of said LED lighting sources.

22. An LED lighting system comprising at least two mounting structures, each of the mounting structures comprising:

at least one LED lighting source;

a support body comprising a hollow body having a free space inside, wherein said support body is at least partially apertured to permit cooling air flow therethrough and said support body is aluminum;

a circuit board for mounting said at least one LED lighting source, said circuit board having conductive traces to feed electrical power to said at least one LED lighting source, wherein the circuit board is attached to a top of the support body;

connectors to allow cascaded connection to other homologous mounting structures, said connectors comprising;

a first connector receiving power from a power source or from a connector of a first one of the homologous mounting structures, a second connector providing the received power to a connector of a second one of the homologous mounting structures, wherein the first and second connectors are electrically connected such that a voltage of the power received at the first connector is substantially the same as a voltage of the power provided at the second connector, and wherein the first and second connectors are complementary with respect to one another; and

a driver circuit for driving the at least one LED lighting source, wherein the driver circuit provides electrical power received at the first connector to the at least one LED lighting source via the conductive traces of the circuit board, the driver circuit controls a drive current provided to the at least one LED lighting source, and the driver circuit is mounted within the free space of the support body, and the driver circuit provides power to and controls the current of only the at least one LED lighting source mounted on the circuit board of the mounting structure, wherein the at least one LED lighting source of each of the mounting structures is independently driven with respect to the LED lighting source of another mounting structure.

23. An LED lighting system comprising at least two mounting structures, each of the mounting structures comprising:

at least one LED lighting source;

a support body comprising an elongated hollow body having a free space inside, said support body having ends, a top, a bottom, and sides, wherein said support body is configured for parallel, side-by-side connection of a plurality of homologous structures;

a circuit board for mounting said at least one LED lighting source, said circuit board having conductive traces to feed electrical power to said at least one LED lighting source, wherein the circuit board is attached to a top of the support body;

connectors to allow cascaded connection to other homologous mounting structures, said connectors comprising;

a first connector receiving power from a power source or from a connector of a first one of the homologous mounting structures, a second connector providing the received power to a connector of a second one of the homologous mounting structures, wherein the first and second connectors are electrically connected such that a voltage of the power received at the first connector is substantially the same as a voltage of the power provided at the second connector, and wherein the first and second connectors are complementary with respect to one another; and

a driver circuit for driving the at least one LED lighting source, wherein;

the driver circuit provides electrical power received at the first connector to the at least one LED lighting source via the conductive traces of the circuit board, the driver circuit controls a drive current provided to the at least one LED lighting source, and the driver circuit is mounted within the free space of the support body, and the driver circuit provides power to and controls the current of only the at least one LED lighting source mounted on the circuit board of the mounting structure, wherein the at least one LED lighting source of each of the mounting structures is independently driven with respect to the LED lighting source of another mounting structure.