High efficiency low cost safety light emitting diode illumination device

• US 20090175041A1
• Filed: 01/06/2008
• Published: 07/09/2009
• Est. Priority Date: 01/07/2007
• Status: Abandoned Application

• Current Assignee: Pui Hang Yuen, Sik Hing Yuen
• Original Assignee: Pui Hang Yuen, Sik Hing Yuen
• Inventors: Yuen, Pui Hang, Yuen, Sik Hing
• Application Number:
  US12/006,844
• Publication Number:
  US 20090175041A1
• Time in Patent Office: Days
• US Class Current: 362/294
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 25/02 coming into action when lighting device is disturbed, dismounted, or broken
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 3/061 the material being glass
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2224/73265 Layer and wire connectors
• 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

Abstract

An illumination device of high intensity light emitting diodes, produces broad illumination with high efficiency, electromagnetic compatibility, and human safety, at low manufacturing cost. Special structures of the device simultaneously provide highly efficient heat sinking, human safety protection, electromagnetic shielding, optical optimization, and 3-dimensional compatibility with traditional incandescent lamp fixtures and applications. Structures, shape, and layers of materials of the device enable industry standard safety requirements to be met.

Claims

1. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central optical position within the interior area of said protective membrane to the exterior area of said protective membrane;

a radial fin structure of said heatsink extending around the exterior optical part of said protective membrane;

said radial fin structure having gaps between fins for illumination to operatively pass through said gaps between said fins.

2. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central optical position within the interior area of said protective membrane to the exterior area of said protective membrane;

a heat sink structure of said heatsink extending around the exterior of said protective membrane;

an insulator structure affixed operatively separating said heatsink and said Edison base electrical connection.

3. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central position in the interior area of said protective membrane to the exterior area of said protective membrane;

a heat sink structure of said heatsink having a radial fin structure with holes in said fin structure wherein said heatsink structure extends radially around the exterior direct illumination field of said protective membrane;

an insulator structure affixed between said heatsink and said Edison base.

4. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central optical position within the interior area of said protective membrane to the exterior area of said protective membrane;

the internal structure of said heatsink formed as a housing of metallic material containing an electrical driving circuit for said light emitting diodes;

said internal housing forming a metallic electromagnetic shield structure.

5. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central optical position within the interior area of said protective membrane to the exterior area of said protective membrane;

said heatsink having a layer of coating to provide safety protection to the user.

6. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central optical position within the interior area of said protective membrane to the exterior area of said protective membrane;

said heatsink having a layer of heat conductive electrically insulative material separating the portion of said heatsink upon which said light emitting diodes are mounted from the portion of the heatsink which extends to the exterior of said protective membrane.

7. A light emitting diode illumination device substantially filling the three-dimensional footprint shape of a traditional Edison base incandescent lightbulb wherein said illumination device comprises:

a semi-globular transparent outer protective membrane covering light emitting diode sources of illumination;

said protective membrane covering a portion of a faceted heatsink upon which said light emitting diodes are mounted upon facets;

said light emitting diodes thermally connected to said heatsink wherein the thermally conductive structure of said heatsink extends from a central optical position within the interior area of said protective membrane to the exterior area of said protective membrane;

structures of electrically insulative material operatively connected to said heatsink serving as a barrier to electronic circuitry for prevention of harmful electrostatic discharge.