Diode lighting arrangement
View Patent ↗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).
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.