Led Lighting Module

• US 20080253127A1
• Filed: 09/12/2006
• Published: 10/16/2008
• Est. Priority Date: 09/22/2005
• Status: Active Grant

• Current Assignee: Lumileds LLC (Apollo Global Management, Inc.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Willwohl, Harald, Peters, Ralph Hubert, Elders, Gerard, Van Der Wielen, Piet, Reniers, Jan
• Granted Patent: US 7,806,575 B2
• Time in Patent Office: Days
• US Class Current: 362/294
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21S 41/00 Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps reversing lights F21S43/00
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/195 Details of lamp holders, terminals or connectors
• CPC Class Codes: F21S 45/10 Protection of lighting devices cooling of lighting devices F21S45/40; waterproofing of lighting devices F21S45/50
• CPC Class Codes: F21S 45/48 with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
• CPC Class Codes: F21V 19/0015 Fastening arrangements intended to retain light sources
• CPC Class Codes: F21V 23/007 enclosed in a casing
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The invention describes an LED lighting module (1) comprising an LED element (10), an electronic driving arrangement (30) for driving the LED (11), and a heat sink (20). The heat sink (20) forms a casing for the electronic driving arrangement (30) and comprises a receptacle interface (26) on a front side (F) of the heat sink (20) with a number of first reference elements (27) for coupling the LED element (10) to the heat sink (20) in a defined orientation. The heat sink further comprises a cavity (28) for enclosing at least parts of the electronic driving arrangement (30) and a number of second reference elements (22) for coupling the LED light module (10) to a secondary optic (70,70′). Moreover the invention describes a lighting assembly (80, 80′) comprising such an LED lighting module (1).

Claims

1. An LED lighting module (1) comprising an LED element (10), an electronic driving arrangement (30) for driving the LED element (10), and a heat sink (20),

which heat sink (20) forms a casing for the electronic driving arrangement (30) and comprises

a receptacle (26) on a front side (F) of the heat sink (20) with a number of first reference elements (27, 29) for coupling the LED element (10) to the heat sink (20) in a defined orientation,

a cavity (28) for enclosing at least parts of the electronic driving arrangement (30),

a number of second reference elements (22) for coupling the LED light module (10) to a secondary optic (70,70′

).

2. An LED lighting module (1) according to claim 1, where the LED element (10) is mounted directly onto the heat sink (10).

3. An LED lighting module (1) according to claim 1, where the cavity (28) is located in a rear (R) side, opposite to the front side (F), of the heat sink (20).

4. An LED lighting module (1) according to claim 1, comprising a rear cover (40), which covers the cavity (28) enclosing the electronic driving arrangement (30).

5. An LED lighting module (1) according to claim 4, where the electronic driving arrangement (30) is attached to the rear cover (40).

6. An LED lighting module (1) according to claim 4, where the rear cover (40) is rigidly joined to the heat sink element (20).

7. An LED lighting module (1) according to claim 4, where the rear cover (40) comprises a connector (41) for electrically connecting the LED light module (1) to a power supply.

8. An LED lighting module (1) according to claim 4, where the LED element (10) is electrically connected with the electronic driving arrangement (30) by lead elements (31) protruding through the heat sink (20) to the front side (F) of the heat sink (20).

9. An LED lighting module (1) according to claim 1, wherein the rear cover (40) comprises rigid contact elements for electrically connecting the electronic driving arrangement (30) with the LED element (10) or rigid support elements (42), which mechanically support lead elements (31) between the LED element (10) and the electronic driving arrangement (30), when the rear cover (40) is assembled with the heat sink (20).

10. An LED lighting module (1) according to claim 1, wherein the first reference elements (27) comprise notches (27) at the interface (26) between the LED element (10) and the heat sink (20).

11. An LED lighting module (1) according to claim 1, wherein the second reference elements (22) comprise at least three reference protrusions (22) positioned in a reference plane (P) parallel to the front side (F) of the heat sink (20).

12. A lighting assembly (80, 80′

) comprising an LED lighting module (1) according to claim 1.

13. A lighting assembly (80) according to claim 12 comprising a LED lighting module (1) according to claim 11 wherein the lighting assembly (80) comprises grooves (72) corresponding to the second reference elements (22) of the LED lighting module (1) for referencing the LED lighting module (1) in the reference plane (P).