Lighting assembly

• US 9,157,612 B2
• Filed: 10/18/2011
• Issued: 10/13/2015
• Est. Priority Date: 10/19/2010
• Status: Expired due to Fees

• Current Assignee: OSRAM GmbH (Ams-Osram AG)
• Original Assignee: OSRAM GmbH (Ams-Osram AG)
• Inventors: Alfier, Alberto, Fiegler, Matthias, Lorenz, Stefan, Scordino, Alessandro
• Primary Examiner(s): Philogene, Haissa
• Assistant Examiner(s): Fernandez, Pedro C
• Application Number:
  US13/880,643
• Publication Number:
  US 20130208484A1
• Time in Patent Office: 1,456 Days
• Field of Search: 362/296.01, 362/297
• US Class Current: 1/1
• CPC Class Codes: F21V 17/005 with keying means, i.e. for enabling the assembling of component parts in distinctive positions, e.g. for preventing wrong mounting
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 19/0035 the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
• CPC Class Codes: F21V 19/0055 by screwing
• CPC Class Codes: F21V 21/00 Supporting, suspending, or attaching arrangements for lighting devices F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00; Hand grips
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 7/09 with a combination of different curvatures
• CPC Class Codes: F21W 2111/02 for roads, paths or the like
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting assembly having a base body configured as a heat sink (18) having a front surface (18a), a board (14) carrying a light radiation source (12) applied on the front surface of the heat sink, and a fixing element (20) mounted on the front surface of the heat sink with the board arranged therebetween. The fixing element includes a window (22) which leaves at least partly uncovered the light radiation source, such window having side walls (220) which surround the light radiation source and spread outward to form a reflector for the light radiation.

Claims

1. A lighting assembly comprising:

a base body configured as a heat sink having a front surface;

a board carrying a light radiation source positioned on the front surface of said base body;

a fixing element mounted on said front surface of said heat sink with said board arranged therebetween, wherein the fixing element includes a four-sided window that leaves at least partly uncovered said light radiation source, said window having four side walls that surround said light radiation source, spread outwards, and are configured to form a reflector for, and pre-mix a light radiation from, the light radiation source; and

a pair of external reflectors mounted to the fixing element, an internal wall of each external reflector shaped and positioned so as to continue a surface of one side wall of said window of said fixing element, wherein the side walls of said window, at which the external reflectors are mounted, are on opposing sides of the window, and wherein the pair of external reflectors are separate pieces that are mounted only on two opposing sides to the fixing element.

2. The assembly of claim 1, wherein said fixing element is fixed to said front surface by screws.

3. The assembly of claim 1, wherein said fixing element and said board are provided with complementary pins and openings for mutual positioning.

4. The assembly of claim 1, wherein said board carries an electrical connector for said light radiation source and said fixing element includes a notch that embraces and abuts at least a top surface of the electrical connector.

5. The assembly of claim 1, wherein said external reflector includes reflective walls spreading outwards from the side walls of the window of said fixing element.

6. The assembly of claim 1, wherein said external reflector includes a plurality of parts.

7. The assembly of claim 1, wherein said external reflector is coupled to said fixing element by being mounted thereon.

8. The assembly of claim 5, wherein said fixing element and said external reflector are provided with complementary mating surfaces.

9. The assembly of claim 1, wherein said fixing element is fixed to said front surface by screws with the interposition of bushes.

10. The assembly of claim 1, wherein said external reflector is coupled to said fixing element by being mounted thereon via screws.

11. The assembly of claim 8, wherein said complementary mating surfaces have a stepped profile.