LIGHT EMITTING DIODE BULB

• US 20100073944A1
• Filed: 09/23/2008
• Published: 03/25/2010
• Est. Priority Date: 09/23/2008
• Status: Abandoned Application

• Current Assignee: Edison Opto Corporation
• Original Assignee: Edison Opto Corporation
• Inventors: CHEN, PIN-CHUN
• Application Number:
  US12/235,849
• Publication Number:
  US 20100073944A1
• Time in Patent Office: Days
• US Class Current: 362/373
• 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 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2103/33 annular
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light emitting diode (LED) light bulb comprising a heat dissipation module, a circuit board, at least one LED light source and a light-transmissible packaging shell is disclosed in the present invention. The heat dissipation module comprises a heat dissipation base and a heat convection tube extended from the heat dissipation base. The circuit board is assembled to the heat dissipation module. The LED light source is arranged on the circuit board, and releases heat energy when projecting at least one illumination light beam. The light-transmissible packaging shell is assembled to the heat dissipation module to package the LED light source, and formed with a heat dissipation opening. The heat convection tube is extended to the heat dissipation opening to communicate with external environment, so that a heat convection action is progressed between the heat convection tube and external environment to dissipate heat energy.

Claims

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

a heat dissipation module, comprising;

a heat dissipation base; and

a heat convection tube extended from the heat dissipation base;

a circuit board assembled to the heat dissipation module;

at least one LED light source arranged on the circuit board, and releasing a heat energy when projecting at least one illumination light beam; and

a light-transmissible packaging shell assembled to the heat dissipation module, packaging the LED light source for the illumination light beam transmitting through, and formed with a heat dissipation opening;

wherein the heat convection tube is extended to the heat dissipation opening to communicate with external environment, so that a heat convection action is progressed between the heat convection tube and external environment to dissipate the heat energy.

2. The LED light bulb as claimed in claim 1, wherein the heat dissipation module further comprises a plurality of heat dissipation fins outwardly and radially extended from the heat dissipation base.

3. The LED light bulb as claimed in claim 1, wherein the heat convection tube has a wavy inner wall.

4. The LED light bulb as claimed in claim 1, wherein the heat convection tube is vertical to the circuit board.

5. The LED light bulb as claimed in claim 1, further comprising a tube cap assembled to the heat dissipation opening and formed with at least one opening.