Lighting device

Patent metadata

Field	Value
Publication number	US-9371968-B2
Application number	US-201214111581-A
Country	US
Kind code	B2
Filing date	Apr 12, 2012
Priority date	Apr 15, 2011
Publication date	Jun 21, 2016
Grant date	Jun 21, 2016

Abstract

A lighting device may include: a rod-shaped carrier body with at least one first and one second mounting side and a main direction of extent, first semiconductor light-emitting elements on first mounting faces of the first mounting side, and second semiconductor light-emitting elements on second mounting faces of the second mounting side, wherein the first and the second mounting sides face away from one another, wherein the mounting faces are formed by depressions in the mounting sides, which depressions are arranged so as to be spaced apart along the main direction of extent, and wherein the first semiconductor light-emitting elements are identical to one another and the second semiconductor light-emitting elements are identical to one another.

First claim

The invention claimed is:

1. A lighting device, comprising
a rod-shaped carrier body with at least one first and one second mounting side and a main direction of extent,
first semiconductor light-emitting elements on first mounting faces of the first mounting side, and
second semiconductor light-emitting elements on second mounting faces of the second mounting side,
wherein the first and the second mounting sides face away from one another,
wherein the mounting faces are formed by a plurality of depressions in each of the mounting sides, which depressions are arranged so as to be spaced apart along the main direction of extent of each respective mounting side, and
wherein the first semiconductor light-emitting elements are identical to one another and the second semiconductor light-emitting elements are identical to one another.

2. The lighting device according to claim 1 , wherein the carrier body has at least two rod-shaped body parts, each having a partially round cross section and each having at least one flattened side, and the body parts are arranged with the flattened sides against one another.

3. The lighting device according to claim 1 , wherein the semiconductor light-emitting elements are each arranged on a printed circuit board on the mounting faces.

4. The lighting device according to claim 1 , wherein the semiconductor light-emitting elements on one mounting side are arranged in different positions on the respective mounting faces.

5. The lighting device according to claim 1 , wherein the distances between the first mounting faces are equal to the distances between the second mounting faces, and the first and second mounting faces are arranged offset with respect to one another.

6. The lighting device according to claim 1 , wherein the depressions in the first and/or second mounting faces have reflective side faces.

7. The lighting device according to claim 1 , wherein the depressions in the first mounting faces have a shape, width and depth such that the light from the first semiconductor light-emitting elements is emitted at an angle of less than or equal to 65° with respect to the surface normal of the respective first mounting face during operation.

8. The lighting device according to claim 1 , wherein the depressions in the second mounting faces have a shape, width and depth such that all of the light emitted by the second semiconductor light-emitting elements during operation is emitted directly.

9. The lighting device according to claim 1 , wherein the depressions in the second mounting faces have a shape, width and depth such that the light is emitted by the second semiconductor light-emitting elements at an angle of less than or equal to 90° with respect to the surface normal of the respective second mounting face during operation.

10. The lighting device according to claim 1 , wherein the first semiconductor light-emitting elements in each depression in the first mounting face and/or the second semiconductor light-emitting elements in each depression in the second mounting face each have precisely one light-emitting semiconductor chip.

11. The lighting device according to claim 1 , wherein the first semiconductor light-emitting elements or the second semiconductor light-emitting elements each have a plurality of light-emitting semiconductor chips.

12. The lighting device according to claim 1 , wherein the first and second semiconductor light-emitting elements emit light of different colors from one another.

13. The lighting device according to claim 1 , wherein the carrier body has a third mounting side with third semiconductor light-emitting elements on third mounting faces formed by depressions and arranged along the main direction of extent, and the first, second and third mounting sides each face away from one another.

14. The lighting device according to claim 13 , wherein the second and third semiconductor light-emitting elements have an identical design.

15. The lighting device according to claim 1 , wherein a reflector is arranged downstream of the second mounting side in the emission direction of the second semiconductor light-emitting elements.

16. The lighting device according to claim 1 , wherein each of the mounting faces is in the form of a depression with a planar base, wherein the planar bases of the first mounting faces are arranged parallel to one another and in one plane, and wherein the planar bases of the second mounting faces are arranged parallel and in one plane.

17. The lighting device according to claim 1 , wherein the carrier body is designed as a heat sink for the semiconductor light-emitting elements mounted thereon and wherein the carrier body contains or is formed from metal comprising aluminum and/or copper.

18. The lighting device according to claim 1 , wherein each mounting face has electrical connections for a semiconductor light-emitting element arranged on the mounting face and wherein the electrical connections are in the form of electrical contact faces, solder contacts or plug-type contacts.

19. The lighting device according to claim 1 , wherein on each mounting side electrical feed lines interconnect the mounting faces on the respective mounting side, wherein the electrical feed lines are conductor tracks or cables on the surface or in the interior or in a combination thereof along the main direction of extent of the carrier body.

Assignees

• Kuhn Gerhard
• Markytan Ales
• Gaertner Christian
• Osram Gmbh

Inventors

• Kuhn Gerhard
• Markytan Ales
• Gaertner Christian

Classifications

• F21Y2113/13

  comprising an assembly of point-like light sources · CPC title

• F21Y2101/02

  Mechanical Engineering · mapped topic

• F21K9/30 Primary

  Mechanical Engineering · mapped topic

• F21S4/28

  rigid, e.g. LED bars · CPC title

• F21Y2103/003

  Mechanical Engineering · mapped topic