SOLID STATE LIGHTING APPARATUSES AND RELATED METHODS

• US 20150257211A1
• Filed: 03/21/2014
• Published: 09/10/2015
• Est. Priority Date: 03/05/2014
• Status: Abandoned Application

• Current Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Original Assignee: CREE Incorporated (Wolfspeed, Inc.)
• Inventors: Hussell, Christopher P., Athalye, Praneet, Hardin, Craig William, Johnson, Jeremy Allen
• Application Number:
  US14/221,839
• Publication Number:
  US 20150257211A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 45/40 Details of LED load circuits
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: H05B 45/59 for reducing or suppressing flicker or glow effects
• CPC Class Codes: H05B 47/24 Circuit arrangements for protecting against overvoltage
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

Solid state lighting apparatuses and related methods are disclosed. In one aspect, a solid state lighting apparatus is provided. The apparatus includes a substrate, one or more surge protection components supported by the substrate, and at least one solid state light emitter supported by the substrate. The surge protection components are adapted to receive alternating current (AC) directly from an AC power source. The at least one solid state light emitter electrically coupled to the one or more surge protection components. An overall height of the apparatus is approximately 4.5 millimeters (mm) or less. In some aspects, an overall surface area of the one or more surge protection components is approximately 168 square millimeters (mm²) or less. Surge protection circuitry described herein offers a compact form factor, compact surface area, is thin, and meets or exceeds surge compatibility standards.

Claims

18. A solid state lighting apparatus, comprising:

a substrate;

one or more surge protection components supported by the substrate, wherein the surge protection components are adapted to receive alternating current (AC) directly from an AC power source; and

at least one solid state light emitter supported by the substrate and electrically coupled to the one or more surge protection components;

wherein a total surface area of the one or more surge protection components is approximately 168 square millimeters (mm²) or less.

19. The apparatus of claim 18, wherein total surface area the one or more surge protection components is approximately 150 mm² or less.

20. The apparatus of claim 18, wherein total surface area the one or more surge protection components is approximately 100 mm² or less.

21. The apparatus of claim 18, wherein an overall height of the apparatus is approximately 4.5 millimeters (mm) or less.

22. The apparatus of claim 21, wherein the overall height of the apparatus is approximately 4 mm or less.

23. The apparatus of claim 21, wherein the overall height of the apparatus is approximately 3.7 mm or less.

24. The apparatus of claim 18, wherein the surge protection components comprise a first resistor serially connected to a first fuse.

25. The apparatus of claim 24, wherein the first resistor is disposed in a surge protection circuit in advance of the first fuse.

26. The apparatus of claim 24, wherein the surge protection components further comprise at least one of a metal-oxide varistor (MOV), a bridge rectifier, a transient voltage suppression (TVS) diode, and/or a combination thereof.

27. The apparatus of claim 26, wherein a height of each component of the surge protection components is approximately 3.7 mm or less.

28. The apparatus of claim 18, comprising a plurality of light emitters provided in a plurality of light emitter segments.

29. The apparatus of claim 28, wherein at least one light emitter segment targets a color temperature of approximately 2700K or below and another light emitter segment targets a color temperature of approximately 2700K or above.

30. The apparatus of claim 28, wherein at least one solid state light emitter segment targets a color temperature of approximately 1800K.

31. The apparatus of claim 18, further comprising at least one packaged driver component arranged on a surface of substrate.

32. The apparatus of claim 18, wherein the substrate comprises ceramic.

33. The apparatus of claim 32, wherein the ceramic comprises alumina (Al₂O₃).

34. A method of providing a solid state lighting apparatus, the method comprising:

providing a substrate;

providing one or more surge protection components over the substrate;

arranging least one solid state light emitter over the substrate; and

electrically coupling the at least one solid state light emitter to the one or more surge protection components;

wherein an overall height of the apparatus is approximately 4.5 millimeters (mm) or less.

1. A solid state lighting apparatus, comprising:

a substrate;

one or more surge protection components supported by the substrate, wherein the surge protection components are adapted to receive alternating current (AC) directly from an AC power source; and

at least one solid state light emitter supported by the substrate and electrically coupled to the one or more surge protection components;

wherein an overall height of the apparatus is approximately 4.5 millimeters (mm) or less.

2. The apparatus of claim 1, wherein the surge protection components comprise a first resistor serially connected to a first fuse.

3. The apparatus of claim 2, wherein the first resistor is disposed in a surge protection circuit in advance of the first fuse.

4. The apparatus of claim 1, comprising a plurality of light emitters provided in a plurality of light emitter segments.

5. The apparatus of claim 4, wherein at least one light emitter segment targets a color temperature of approximately 2700K or below and another light emitter segment targets a color temperature of approximately 2700K or above.

6. The apparatus of claim 4, wherein at least one solid state light emitter segment targets a color temperature of approximately 1800K.

7. The apparatus of claim 1, wherein the substrate comprises a non-metallic body, and wherein the one or more surge protection components are spaced from the non-metallic body by one or more non-metallic layers.

8. The apparatus of claim 7, wherein at least one of the non-metallic layers comprises FR-4, fiberglass reinforced epoxy, polyimide, or a PCB laminate material.

9. The apparatus of claim 1, wherein the surge protection components comprise at least one of a metal-oxide varistor (MOV), a bridge rectifier, a transient voltage suppression (TVS) diode, and/or a combination thereof.

10. The apparatus of claim 1, further comprising at least one packaged driver component arranged on a surface of the substrate.

11. The apparatus of claim 10, wherein the packaged driver component and at least one surge protection component are disposed over coplanar surfaces of the substrate.

12. The apparatus of claim 1, wherein the at least one solid state light emitter is encapsulated.

13. The apparatus of claim 1, wherein at least one phosphor is disposed over the at least one solid state light emitter.

14. The apparatus of claim 1, wherein the substrate comprises ceramic.

15. The apparatus of claim 14, wherein the ceramic comprises alumina (Al₂O₃).

16. The apparatus of claim 1, wherein the overall height of the apparatus is approximately 4 mm or less.

17. The apparatus of claim 1, wherein the overall height of the apparatus is approximately 3.7 mm or less.

35. The method of claim 34, wherein providing the substrate comprises providing a non-metallic substrate.

36. The method of claim 34, wherein providing the substrate comprises providing an alumina (Al₂O₃) substrate.

37. The method of claim 34, wherein providing the surge protection components comprises providing at least one of a resistor, a fuse, a metal-oxide varistor (MOV), a bridge rectifier, a transient voltage suppression (TVS) diode, and/or a combination thereof.

38. The method of claim 37, wherein a total surface area of the one or more surge protection components is approximately 168 square millimeters (mm²) or less.

39. The apparatus of claim 34, wherein a height of each component of the surge protection components is approximately 4 mm or less.

39-1. The apparatus of claim 34, wherein a height of each component of the surge protection components is approximately 3.7 mm or less.