Mounting arrangement for LED lamps

• US 20070279906A1
• Filed: 05/30/2007
• Published: 12/06/2007
• Est. Priority Date: 05/31/2006
• Status: Active Grant

• Current Assignee: OSRAM GmbH (Ams-Osram AG)
• Original Assignee: Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen mbH (Ams-Osram AG)
• Inventors: Ma, Rui, Scilla, Giovanni, He, Xi
• Granted Patent: US 7,559,674 B2
• Time in Patent Office: Days
• US Class Current: 362/253
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/009 the casing being inside the housing of the lighting device
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A LED lighting arrangement includes a support body having mounted thereon one or more LED lighting sources and a driver or feeding the LED lighting sources. The support body includes a high-voltage section carrying the driver and a low-voltage section carrying, mounted on a heat sink, the light sources. An insulation barrier is provided between the high voltage section and the low-voltage section of the board with a twisted pair forming a wiring that traverses the insulation barrier to connect the driver and the LED lighting sources.

Claims

1. A LED lighting arrangement including a support body (16) having mounted thereon at least one LED lighting source (12) and a driver (14) for feeding said at least one LED lighting source (12), wherein:

said support body (16) includes a high-voltage section (16a) carrying said driver (14) and a low-voltage section (16b) carrying said at least one LED light source (12),

an insulation barrier (20, 26) is provided between said high voltage section (16a) and said low-voltage section (16b) of said body (16) with a wiring (28) traversing said insulation barrier to connect said driver (14) and said at least one LED lighting source (12).

2. The arrangement of claim 1, characterised in that it includes an electrically conductive heat sink (24) carried by said low-voltage section (16b) of said body (16) and having said at least one LED lighting source (12) mounted thereon.

3. The arrangement of claim 1, characterised in that said driver (14) includes a fly-back transformer.

4. The arrangement of claim 1, characterised in that said transformer has a secondary winding comprised of triple-insulation wire.

5. The arrangement of claim 1, characterised in that said wiring (28) is in the form of a twisted pair.

6. The arrangement of claim 1, characterised in that said insulation barrier includes a gap (20) separating said high-voltage section (16a) and said low-voltage section (16b) of said body (16).

7. The arrangement of claim 6, characterised in that said gap (20) extends along a non-rectilinear trajectory.

8. The arrangement of claim 1, characterised in that said high-voltage section (16a) and said low-voltage section (16b) of said body (16) are arranged in a mating relationship, with a protrusion (160) of one of said sections (16a) extending into a recess (162) of the other (16b) of said high-voltage section (16a) and said low-voltage section (16b) of said body (16).

9. The arrangement of claim 1, characterised in that said insulation barrier includes an insulating layer (26) arranged in correspondence with said driver (14).

10. The arrangement of claim 9, characterised in that said insulating layer (26) is a plastic layer.

11. The arrangement of claim 9, characterised in that said layer (26) is in the form of an insulating shield at least partly surrounding said driver (14).

12. The arrangement of claim 8, characterised in that said layer (26) is in the form of an insulating shield at least partly surrounding said driver (14);

characterised in that said protrusion (160) is a protrusion of said high-voltage section (16a) of said body (16) carrying said driver (14) and said insulating layer (26) is a cap mounted onto said protrusion (160).

13. The arrangement of claim 1, characterised in that said driver (14) includes a transformer configured to provide 6 mm creepage/clearance and 4 kV insulation.

14. The arrangement of claim 1, characterised in that said driver (14) includes a transformer (14) with a floating secondary winding.

15. The arrangement of claim 1, characterised in that it includes a casing (18) at least partly enclosing said at least one light source (12) and said driver (14).

16. The arrangement of claim 15, characterised in that said casing (18) has a bulb-like shape.