Diode lighting arrangement

Patent metadata

Field	Value
Publication number	US-9343446-B2
Application number	US-201214119621-A
Country	US
Kind code	B2
Filing date	May 30, 2012
Priority date	Jun 8, 2011
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

The invention describes a diode lighting arrangement ( 1 A, 1 B, 1 C) comprising a light-emitting diode arrangement ( 1,2 ) comprising at least two exposed serially connected light-emitting diodes ( 1 ) connected in parallel with an electrostatic discharge protection diode arrangement ( 2 ); and an electrostatic discharge diverting arrangement ( 4,50 ) extending in physical proximity to an interconnect ( 10 ) between adjacent light-emitting diodes ( 1 ), which diverting arrangement ( 4,50 ) is realized to divert electrostatic discharge (S 2 ) from the interconnect ( 10 ) to a region of low potential ( 21,22 , GND). The invention further describes an automotive lighting assembly ( 3 A, 3 B) comprising such a diode lighting arrangement ( 1 A, 1 B, 1 C). The invention also describes a method of manufacturing a diode lighting arrangement ( 1 A, 1 B, 1 C) which method comprises the steps of serially connecting a light-emitting diode arrangement ( 1,2 ) comprising at least two exposed serially connected light-emitting diodes ( 1 ) in parallel with an electrostatic discharge protection diode arrangement ( 2 ); and arranging an electrostatic discharge diverting arrangement ( 4,50,60 ) to extend in physical proximity to at least one interconnect ( 10 ) between adjacent light-emitting diodes ( 1 ), which diverting arrangement ( 4,50 ) is realized to divert electrostatic discharge (S 2 ) from the interconnect ( 10 ) to a region of low potential ( 21,22 , GND).

First claim

The invention claimed is:

1. A diode lighting arrangement, comprising:
an electrostatic discharge protection diode arrangement;
a light-emitting diode arrangement comprising at least two exposed serially connected light-emitting diodes connected in parallel with the electrostatic discharge protection diode arrangement; and
an electrostatic discharge diverting arrangement extending in physical proximity to an interconnect between adjacent light-emitting diodes of the light-emitting diode arrangement, wherein the electrostatic discharge diverting arrangement comprises an open-ended electrode coupled to the electrostatic discharge protection diode arrangement to divert electrostatic discharge from the interconnect to a region of low potential.

2. The diode lighting arrangement according to claim 1 , wherein the open-ended electrode comprises an antenna arranged essentially alongside the interconnect.

3. The diode lighting arrangement according to claim 1 , comprising an enclosing component arranged about the light-emitting diodes of the light-emitting diode arrangement, wherein the open-ended electrode comprises a metalized surface of the enclosing component.

4. The diode lighting arrangement according to claim 3 , wherein:
the enclosing component comprises a collimator; and
the metalized surface comprises a reflective coating on an interior surface of the collimator.

5. The diode lighting arrangement according to claim 1 , comprising an electrical connection between the electrostatic discharge diverting arrangement and a node of the electrostatic discharge protection diode arrangement.

6. The diode lighting arrangement according to claim 5 , wherein the electrostatic discharge protection diode arrangement comprises an electrostatic discharge diode.

7. The diode lighting arrangement according to claim 1 , comprising a separation between the interconnect and the electrostatic discharge diverting arrangement of at most 3.0 mm.

8. The diode lighting arrangement according to claim 1 , wherein the electrostatic discharge diverting arrangement is dimensioned to accommodate a voltage surge of up to 15.0 kV.

9. The diode lighting arrangement according to claim 1 , comprising a first light-emitting diode arrangement connected in series with a second light-emitting diode arrangement, and wherein the electrostatic discharge diverting arrangement extends in physical proximity to at least one interconnect between adjacent light-emitting diodes of the first light-emitting diode arrangement and at least one interconnect between adjacent light-emitting diodes of the second light-emitting diode arrangement.

10. An automotive lighting assembly comprising a diode lighting arrangement according to claim 1 .

11. The automotive lighting assembly according to claim 10 , wherein the automotive lighting assembly is realised to be arranged inside a light-transmissive outer cover of an automotive lighting unit.

12. The diode lighting arrangement according to claim 1 , comprising a separation between the interconnect and the electrostatic discharge diverting arrangement of at most 1.0 mm.

13. The diode lighting arrangement according to claim 1 , comprising a separation between the interconnect and the electrostatic discharge diverting arrangement of at most 0.3 mm.

14. The diode lighting arrangement according to claim 1 , wherein the electrostatic discharge diverting arrangement is dimensioned to accommodate a voltage surge of up to 2.0 kV.

15. The diode lighting arrangement according to claim 1 , wherein the electrostatic discharge diverting arrangement is dimensioned to accommodate a voltage surge of up to 8.0 kV.

16. A diode lighting arrangement, comprising:
an electrostatic discharge protection diode arrangement;
a light-emitting diode arrangement comprising at least two exposed serially connected light-emitting diodes connected in parallel with the electrostatic discharge protection diode arrangement; and
an electrostatic discharge diverting arrangement extending in physical proximity to an interconnect between adjacent light-emitting diodes of the light-emitting diode arrangement, wherein:
the electrostatic discharge diverting arrangement is configured to divert electrostatic discharge from the interconnect to a region of low potential;
the electronic discharge diverting arrangement comprises an antenna arranged essentially alongside the interconnect; and
the antenna comprises a metal strip applied to a frame of the light-emitting diode arrangement.

17. A diode lighting arrangement, comprising:
an electrostatic discharge protection diode arrangement;
a light-emitting diode arrangement comprising at least two exposed serially connected light-emitting diodes connected in parallel with the electrostatic discharge protection diode arrangement;
an electrostatic discharge diverting arrangement extending in physical proximity to an interconnect between adjacent light-emitting diodes of the light-emitting diode arrangement, wherein the electrostatic discharge diverting arrangement is configured to divert electrostatic discharge from the interconnect to a region of low potential; and
a collimator arranged about the light-emitting diodes of the light-emitting diode arrangement, wherein the electrostatic discharge diverting arrangement comprises a metalized surface of the collimator.

18. A method of manufacturing a diode lighting arrangement, comprising:
connecting a light-emitting diode arrangement comprising at least two exposed serially connected light-emitting diodes in parallel with an electrostatic discharge protection diode arrangement;
arranging an electrostatic discharge diverting arrangement to extend in physical proximity to at least one interconnect between adjacent light-emitting diodes of the light-emitting diode arrangement and to be coupled to the electrostatic discharge protection diode arrangement, the electrostatic discharge diverting arrangement comprising an open-ended electrode; and
configuring the electrostatic discharge diverting arrangement to divert electrostatic discharge from the interconnect to a region of low potential.

19. The method according to claim 18 , further comprising:
connecting a first light-emitting diode arrangement in series with a second light-emitting diode arrangement; and
extending the electrostatic discharge diverting arrangement in physical proximity to at least one interconnect between adjacent light-emitting diodes of the first light-emitting diode arrangement and at least one interconnect between adjacent light-emitting diodes of the second light-emitting diode arrangement.

Assignees

• Schug Josef Andreas
• Koninkl Philips Nv

Inventors

• Schug Josef Andreas

Classifications

• H10W90/00

  Package configurations · CPC title

• F21S45/10

  Protection of lighting devices (cooling of lighting devices F21S45/40; waterproofing of lighting devices F21S45/50) · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• H05B45/54

  in a series array of LEDs · CPC title

• H10D89/60

  Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD] · CPC title