Magnetic light emitting diode (LED) lighting system

• US 10,145,552 B2
• Filed: 03/28/2016
• Issued: 12/04/2018
• Est. Priority Date: 03/26/2015
• Status: Active Grant

• Current Assignee: Lux Lighting Systems LLC
• Original Assignee: Lux Lighting Systems LLC
• Inventors: Fay, Jonathan Eric
• Primary Examiner(s): Walsh, Daniel I
• Application Number:
  US15/083,265
• Publication Number:
  US 20160281973A1
• Time in Patent Office: 981 Days
• CPC Class Codes: B60Q 1/2615 mounted on the vehicle body, e.g. with magnets
• CPC Class Codes: B60Q 1/2696 Mounting of devices using LEDs
• CPC Class Codes: F21S 43/14 Light emitting diodes [LED]
• CPC Class Codes: F21S 43/19 Attachment of light sources or lamp holders
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21V 19/002 the fastening means engaging the encapsulation or the packaging of the semiconductor device
• CPC Class Codes: F21V 21/096 Magnetic devices
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• 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

The present disclosure describes example magnetic LED lighting systems. A lighting apparatus in accordance with the present disclosure may include LEDs connected in series with a resistor. The LEDs are each coupled, directly or via thermal vias through a mounting element, to one or more magnets. The magnets may serve dual purposes: as a heat sink to dissipate heat and enable LEDs to be used, and as a mounting device to mount the lighting apparatus to a desirable location, such as on an automobile or an industrial machine. The dual-purpose magnets may eliminate the need for an additional heat sink element, thereby reducing weight and/or size of the lighting apparatus.

Claims

1. A lighting apparatus, comprising:

a mounting element comprising a first side and a second side;

one or more light-emitting diodes affixed to the first side of the mounting element;

a resistor coupled to the one or more light-emitting diodes and affixed to the first side of the mounting element;

a magnet affixed to the second side of the mounting element, wherein at least part of the magnet is positioned opposite the one or more light-emitting diodes; and

a hole through the mounting element, wherein the one or more light-emitting diodes is affixed to the first side of the mounting element over the hole, wherein the magnet is affixed to the second side of the mounting element over the hole, and wherein at least part of the one or more light-emitting diodes physically contacts at least part of the magnet.

2. The lighting apparatus of claim 1, further comprising a plurality of light-emitting diodes coupled in a series circuit configuration, wherein the resistor is also coupled in the series circuit configuration to the plurality of light-emitting diodes.

3. The lighting apparatus of claim 2, further comprising a plurality of magnets, wherein at least one magnet of a plurality of magnets is positioned opposite each of the plurality of light-emitting diodes.

4. The lighting apparatus of claim 3, further comprising a plurality of holes through the mounting element, wherein the each of the plurality of light-emitting diodes is affixed to the first side of the mounting element over a hole, wherein each of the plurality of magnets is affixed to the second side of the mounting element over a hole, and wherein at least part of each of the plurality of light-emitting diodes contacts at least part of a magnet.

5. The lighting apparatus of claim 1, wherein the magnet is a neodymium magnet.

6. The lighting apparatus of claim 1, further comprising a polymer encasing the mounting element, the one or more light-emitting diodes, and the resistor.

7. The lighting apparatus of claim 1, further comprising a polymer encasing the mounting element, the one or more light-emitting diodes, the resistor, and the magnet.

8. The lighting apparatus of claim 6, wherein the polymer comprises a thermosetting resin.

9. A lighting apparatus, comprising:

a printed circuit board comprising a first side and a second side;

one or more light-emitting diodes affixed to the first side of the printed circuit board;

a resistor coupled to the one or more light-emitting diodes and affixed to the first side of the printed circuit board;

a magnet affixed to the second side of the printed circuit board, wherein at least part of the magnet is positioned opposite the one or more light-emitting diodes; and

one or more thermal vias through the printed circuit board, wherein a first side of the one or more thermal vias is thermally coupled to the one or more light-emitting diodes, and a second side of the one or more thermal vias is thermally coupled to the magnet.

10. The lighting apparatus of claim 9, further comprising a plurality of light-emitting diodes coupled in a series circuit configuration, wherein the resistor is also coupled in the series circuit configuration to the plurality of light-emitting diodes.

11. The lighting apparatus of claim 10, further comprising a plurality of thermal vias through the printed circuit board, wherein each of the plurality of light-emitting diodes is thermally connected to a first side of at least one of the thermal vias, and wherein each magnet positioned opposite a light-emitting diode is thermally connected to a second side of at least one of the thermal vias.

12. A lighting apparatus, comprising:

a light-emitting diode;

a resistor electrically coupled in a series circuit configuration to the light-emitting diode; and

a magnet directly contacting the light-emitting diode.

13. The lighting apparatus of claim 12, further comprising a plurality of light-emitting diodes, wherein the magnet is affixed to at least part of each light-emitting diode.

14. The lighting apparatus of claim 13, further comprising a plurality of magnets, wherein at least one magnet is affixed to each light-emitting diode.

15. The lighting apparatus of claim 14, further comprising a polymer encasing the plurality of light-emitting diodes, the resistor, and at least part of each magnet.

16. The lighting apparatus of claim 15, wherein the polymer comprises a thermosetting resin.

17. The lighting apparatus of claim 16, wherein the magnet is a neodymium magnet.

18. The lighting apparatus of claim 12, wherein the magnet is a neodymium magnet.

19. The lighting apparatus of claim 14, wherein each magnet is a neodymium magnet.