SOLID STATE LIGHTING DEVICE WITH AN INTEGRATED FAN

• US 20100276705A1
• Filed: 09/23/2009
• Published: 11/04/2010
• Est. Priority Date: 07/20/2009
• Status: Abandoned Application

• Current Assignee: Bridgelux Incorporated
• Original Assignee: Bridgelux Incorporated
• Inventors: SCOTT, Keith Scott
• Application Number:
  US12/565,642
• Publication Number:
  US 20100276705A1
• Time in Patent Office: Days
• US Class Current: 257/88
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/48137 the bodies being arranged next to each other, e.g. on a common substrate
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• CPC Class Codes: H01L 2924/00012 Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01L 2924/181 Encapsulation

Abstract

A solid state lighting device includes a light source having one or more solid state light emitting cells. The solid state lighting device also includes a fan to cool the light emitting cells.

Claims

1-38. -38. (canceled)

39. A solid state lighting device, comprising:

one or more solid state light emitting cells; and

a fan having a surface supporting the one or more light emitting cells, the fan being configured to cool the one or more light emitting cells.

40. The solid state lighting device of claim 39 wherein the one or more light emitting cells are electrically coupled together.

41. The solid state lighting device of claim 40 further comprising a dielectric having at least one electrical contact electrically coupled to the light emitting cells.

42. The solid state light emitting device of claim 41 wherein the dielectric comprises a dielectric layer between the light emitting cells and the surface of the fan.

43. The solid state light emitting device of claim 41 wherein the dielectric comprises a dielectric pad, and wherein the light emitting cells are formed directly on the surface of the fan.

44. The solid state light emitting device of claim 41 further comprising a boundary formed around the light emitting cells, and wherein the dielectric extends across the boundary.

59. The solid state light emitting device of claim 44 wherein said at least one electrical contact comprises a first electrical contact outside the boundary and a second electrical contact inside the boundary, the first and second electrical contacts being electrically coupled together, and wherein the second electrical contact is wired to at least one of the light emitting cells.

60. The solid state lighting device of claim 39 wherein the fan comprises an electronic fan.

61. The solid state lighting device of claim 39 wherein the fan comprises a second surface opposite the surface supporting the one or more light emitting cells, wherein the fan is further configured to generate a corona wind along the second surface.

62. The solid state lighting device of claim 39 further comprising phosphor, the one or more light emitting cells being arranged on the fan to emit light through the phosphor.

63. The solid state lighting device of claim 39 wherein the one or more light emitting cells are configured to emit different wavelengths that combine to produce white light.

64. The solid state lighting device of claim 63 further comprising a boundary formed around the light emitting cells to form a cavity, and wherein the phosphor material is in the cavity.

45-50. -50. (canceled)

51. A solid state lighting device, comprising:

means for emitting light comprising one or more solid state light emitting cells;

means for cooling the one or more solid state light emitting cells, wherein the cooling means is integrated with the light emitting means.

52. The solid state lighting device of claim 51 wherein the light emitting means comprises a substrate having opposing surfaces, and wherein the one or more light emitting cells are supported on one of the surfaces of the substrate and the cooling means is integrated with the other one of the surfaces of the substrate.

53. The solid state lighting device of claim 51 wherein the substrate comprises a thermally conductive base and a thermally conductive dielectric layer on the base, the one or more light emitting cells being attached to the dielectric layer and the cooling means being integrated with the base.

54. The solid state lighting device of claim 53 wherein the dielectric layer includes an electrically conductive circuit layer connecting the one or more light emitting cells to one another, the dielectric layer providing electrical insulation between the circuit layer and the base.

55. The solid state lighting device of claim 51 wherein the cooling means comprises an electronic fan.

56. The solid state lighting device of claim 51 wherein the cooling means comprises a thermally conductive base attached to the substrate of the means for emitting light.

57. The solid state lighting device of claim 51 wherein the cooling means is configured to generate corona wind.

58. The solid state lighting device of claim 51 wherein the light emitting means comprises phosphor, the one or more light emitting cells being arranged to emit light through the phosphor.