Lighting apparatus

• US 8,602,620 B2
• Filed: 08/08/2008
• Issued: 12/10/2013
• Est. Priority Date: 08/10/2007
• Status: Active Grant

• Current Assignee: Osram Beteiligungsverwaltung GmbH (Ams-Osram AG)
• Original Assignee: OSRAM GmbH (Ams-Osram AG)
• Inventors: Vollmer, Ralf, Reiners, Thomas
• Primary Examiner(s): CARTER, WILLIAM JOSEPH
• Application Number:
  US12/672,714
• Publication Number:
  US 20110038172A1
• Time in Patent Office: 1,950 Days
• Field of Search: 362459-549
• US Class Current: 362/546
• CPC Class Codes: F21S 41/143 the main emission direction of the LED being parallel to the optical axis of the illuminating device
• CPC Class Codes: F21S 41/275 Lens surfaces, e.g. coatings or surface structures
• CPC Class Codes: F21S 41/37 characterised by their material, surface treatment or coatings
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/20 characterised by refractors, transparent cover plates, light guides or filters
• CPC Class Codes: F21S 43/33 characterised by their material, surface treatment or coatings
• 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: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 25/00 Safety devices structurally associated with lighting devices gas- tight or water-tight arrangements F21V31/00; in general F16P; protective circuit arrangements per se H02H7/00
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 45/3725 Switched mode power supply [SMPS]

Abstract

A lighting apparatus may include an electrically conductive housing, in whose interior at least one light source and at least one electromagnetic radiation-emitting circuit component configured to operate the at least one light source are arranged; and an electrically conductive cover configured to cover the at least one circuit component; wherein the cover and the housing are electrically connected to one another.

Claims

1. A lighting apparatus, comprising:

an electrically conductive housing, in whose interior at least one light source and at least one electromagnetic radiation-emitting circuit component configured to operate the at least one light source are arranged and wholly encompassed; and

an electrically conductive cover configured to immediately and wholly cover the at least one circuit component;

wherein the cover and the housing are electrically connected to one another;

wherein the cover comprises an optical element configured to guide the beam of light emitted by the light source;

wherein the optical element comprises a reflector.

2. The lighting apparatus as claimed in claim 1, wherein the at least one electromagnetic radiation-emitting circuit component is configured to emit electromagnetic radiation having a frequency of approximately 100 kHz or more.

3. The lighting apparatus as claimed in claim 1, wherein the reflector has a metal plating.

4. The lighting apparatus as claimed in claim 1, wherein reflector is produced from metal.

5. The lighting apparatus as claimed in claim 1, wherein the reflector is held in an electrically conductive manner on the housing.

6. The lighting apparatus as claimed in claim 1, wherein the reflector is connected to the housing by means of an electrically conductive adhesive.

7. The lighting apparatus as claimed in claim 1, wherein the reflector is connected to the housing by means of an electrically conductive, mechanical connecting element.

8. The lighting apparatus as claimed in claim 1, wherein the housing is produced from metal.

9. The lighting apparatus as claimed in claim 1, wherein the housing is produced from conductive plastic.

10. The lighting apparatus as claimed in claim 1, wherein the housing is in the form of a heat sink.

11. The lighting apparatus as claimed in claim 1, wherein the at least one electromagnetic radiation-emitting circuit component is connected to at least one electronic filter element for reducing emission of electromagnetic radiation from electrical feed lines.

12. The lighting apparatus as claimed in claim 1, wherein the at least one light source has at least one LED.

14. The lighting apparatus as claimed in claim 9, wherein the housing is produced from metal-plated plastic.

15. The lighting apparatus as claimed in claim 1, wherein the at least one electromagnetic radiation-emitting circuit component comprises at least one component of a switched-mode power supply.

13. A vehicle lighting system, comprising a lighting apparatus, the lighting apparatus comprising:

an electrically conductive housing, in whose interior at least one light source and at least one electromagnetic radiation-emitting circuit component configured to operate the at least one light source are and wholly encompassed arranged; and

an electrically conductive cover configured to immediately and wholly cover the at least one circuit component;

wherein the cover and the housing are electrically connected to one another;

wherein the cover comprises an optical element configured to guide the beam of light emitted by the light source;

wherein the optical element comprises a reflector.