APPARATUS FOR COOLING LEDS IN A BULB

• US 20100219734A1
• Filed: 05/29/2008
• Published: 09/02/2010
• Est. Priority Date: 06/08/2007
• Status: Abandoned Application

• Current Assignee: Switch Bulb Company, Inc.
• Original Assignee: Superbulbs, Inc.
• Inventors: Lenk, Carol
• Application Number:
  US12/663,697
• Publication Number:
  US 20100219734A1
• Time in Patent Office: Days
• US Class Current: 313/35
• 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 29/58 characterised by the coolants
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 29/767 the planes containing the fins or blades having directions perpendicular to the light emitting axis
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An LED bulb, which includes a shell, a heat dispersing apparatus, at least one LED attached to an upper surface of one of a plurality of fins; and a thermally conductive material within the shell of the bulb. The heat dispersing apparatus includes a plurality of fins, and a body, wherein the body separates the plurality of fins from one another.

Claims

1. A light emitting diode (LED) bulb, comprising:

a shell;

a thermally conductive gel contained within the shell of the bulb;

a heat dispersing apparatus comprising a body and at least one fin, wherein the heat dispersing apparatus projects into the thermally conductive gel contained within the shell;

at least one LED attached to the at least one fin, wherein the at least one LED is positioned within a central portion of the shell; and

a thermally conductive material disposed between the at least one LED and the at least one fin, wherein the thermally conductive material has a higher thermal conductivity than the at least one fin, and wherein one side of the thermally conductive material is in direct contact with the at least one LED and another side of the thermally conductive material is in direct contact with the at least one fin.

2. An LED bulb as set forth in claim 1, wherein the at least one fin comprises a plurality of fins, and wherein the body separates the plurality of fins from one another.

26. An LED bulb as set forth in claim 1, wherein said shell has a bulb shape with a neck portion, and wherein said heat-dispersing apparatus is sized to fit through the neck portion of the said bulb-shaped shell.

105. An LED bulb as set forth in claim 2, wherein the fins are constructed of aluminum.

106. An LED bulb as set forth in claim 2, wherein the at least one LED comprises a plurality of LEDs, and wherein each one of the plurality of LEDs is attached to each one of the plurality of fins.

107. An LED bulb as set forth in claim 106, wherein the thermally conductive material is disposed between each LED and each fin.

108. An LED bulb as set forth in claim 1, wherein the gel is mineral oil.

109. An LED bulb as set forth in claim 1, wherein the at least one fin is constructed of aluminum.

3-25. -25. (canceled)

27. A light emitting diode (LED) incandescent bulb replacement, comprising:

an incandescent bulb-shaped shell;

a thermally conductive gel contained within the shell;

at least one fin projecting into the thermally conductive gel contained within the shell;

at least one LED attached to the at least one fin; and

a thermally conductive material disposed between the at least one LED and the at least one fin, wherein the thermally conductive material has a higher thermal conductivity than the at least one fin, and wherein one side of the thermally conductive material is in direct contact with the at least one LED and another side of the thermally conductive material is in direct contact with the at least one fin.

110. An LED bulb as set forth in claim 27, wherein the at least one fin comprises a plurality of fins.

111. An LED bulb as set forth in claim 110, wherein the fins of the plurality of fins are spaced apart from one another.

112. An LED bulb as set forth in claim 110, wherein the at least one LED comprises a plurality of LEDs, and wherein each one of the plurality of LEDs is attached to each one of the plurality of fins.

113. An LED bulb as set forth in claim 112, wherein the thermally conductive material is disposed between each LED and each fin.

114. An LED bulb as set forth in claim 27, wherein the gel is mineral oil.

115. An LED bulb as set forth in claim 27, wherein the at least one fin is constructed of aluminum.

28-104. -104. (canceled)

116. A light emitting diode (LED) bulb, comprising:

a shell;

a thermally conductive gel contained within the shell of the bulb;

a plurality of fins projecting into the thermally conductive gel contained within the shell, wherein the fins of the plurality of fins are spaced apart from each other with gaps to allow contact with the thermally conductive gel;

a plurality of LEDs attached to the plurality of fins, wherein the plurality of LEDs are positioned within a central portion of the shell, and wherein each one of the plurality of LEDs is attached to each one of the plurality of the plurality of fins; and

a thermally conductive material disposed between each of the plurality of LEDs and each of the plurality of fins, wherein the thermally conductive material has a higher thermal conductivity than the plurality of fins, and wherein one side of the thermally conductive material is in direct contact with each of the plurality of LEDs and another side of the thermally conductive material is in direct contact with each of the plurality of fins.

117. An LED bulb as set forth in claim 116, wherein the gel is mineral oil.

118. An LED bulb as set forth in claim 116, wherein the plurality of fins is constructed of aluminum.

119. An LED bulb as set forth in claim 116, wherein said shell has a bulb shape with a neck portion, and wherein the plurality of fins is sized to fit through the neck portion of the bulb-shaped shell.

120. An LED bulb as set forth in claim 116, further comprising:

a screw-in base attached to the shell, the screw-in base having a plurality of screw threads, wherein the screw-in base is configured to make electrical contact with an AC power source.