LED lamp with simplified structure

• US 8,319,408 B1
• Filed: 06/10/2011
• Issued: 11/27/2012
• Est. Priority Date: 05/23/2011
• Status: Expired due to Fees

• Current Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Original Assignee: Sunonwealth Electric Machine, Ind. Co., Ltd.
• Inventors: Horng, Alex
• Primary Examiner(s): Roy, Sikha
• Application Number:
  US13/157,716
• Publication Number:
  US 20120299456A1
• Time in Patent Office: 536 Days
• Field of Search: 313/46, 362/547, 362/294
• US Class Current: 313/46
• 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 29/673 the fans being used for intake
• CPC Class Codes: F21V 29/677 the fans being used for discharging
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lamp includes a housing, a cooling module and a light emitting diode. The housing has an assembling opening and an electrical connection member on two ends of the housing, wherein an inner surface of the housing defines a receiving room, and a part of the inner surface of the housing adjacent to the assembling opening is an air-guiding wall. The cooling module is disposed at the assembling opening of the housing to form at least one air channel between the cooling module and the air-guiding wall, wherein the cooling module has an air-guiding passage communicating with the receiving room of the housing. The light emitting diode is coupled with the cooling module. Therefore, there is no air inlet or outlet formed on the housing of the LED lamp, so as to provide a simplified structure and to maintain the exterior integrity of the LED lamp.

Claims

1. An LED lamp comprising:

a housing having an assembling opening and an electrical connection member on two ends of the housing, wherein an inner surface of the housing defines a receiving room, and a part of the inner surface of the housing adjacent to the assembling opening is an air-guiding wall;

a cooling module disposed at the assembling opening of the housing to form at least one air channel between the cooling module and the air-guiding wall, wherein the cooling module has an air-guiding passage communicating with the receiving room of the housing, wherein the cooling module comprises a heat sink and a cooling fan, with the cooling fan coupled with the heat sink, wherein the cooling fan of the cooling module has a frame, a fan wheel received in the frame, and a radial extending member formed on bottom of the frame, with the at least one air channel formed between the air-guiding wall and the radial extending member, and with the air-guiding passage formed between the radial extending member and the heat sink; and

a light emitting diode coupled with the cooling module;

wherein the at least one air channel is at least one radial inlet and the air-guiding passage is a radial outlet, or the at least one air channel is at least one radial outlet and the air-guiding passage is a radial inlet.

2. The LED lamp as claimed in claim 1, wherein an axial line of the cooling fan is defined as a reference axial line of the cooling module, and the radial extending member extends in radial directions perpendicular to the reference axial line.

3. The LED lamp as claimed in claim 1 further comprising a transparent bulb coupling with the cooling module, with the light emitting diode received inside the transparent bulb.

4. The LED lamp as claimed in claim 3, wherein the transparent bulb extends to have a surface facing the assembling opening and air-guiding wall of the housing, so as to form a part of the air channel.

5. An LED lamp comprising:

a housing having an assembling opening and an electrical connection member on two ends of the housing, wherein an inner surface of the housing defines a receiving room, and a part of the inner surface of the housing adjacent to the assembling opening is an air-guiding wall;

a cooling module disposed at the assembling opening of the housing to form at least one air channel between the cooling module and the air-guiding wall, wherein the cooling module has an air-guiding passage communicating with the receiving room of the housing, wherein the cooling module comprises a heat sink and a cooling fan, with the cooling fan coupled with the heat sink, wherein the cooling fan of the cooling module has a frame, a fan wheel received in the frame, and a radial extending member formed on bottom of the frame, with the at least one air channel formed between the air-guiding wall and the radial extending member, and with the air-guiding passage formed between an inner periphery of the frame and the heat sink; and

a light emitting diode coupled with the cooling module;

wherein the at least one air channel is at least one radial inlet and the air-guiding passage is an axial outlet, or the at least one air channel is at least one radial outlet and the air-guiding passage is an axial inlet.

6. The LED lamp as claimed in claim 5, wherein an axial line of the cooling fan is defined as a reference axial line of the cooling module, and the radial extending member extends in radial directions perpendicular to the reference axial line.

7. The LED lamp as claimed in claim 5 further comprising a transparent bulb coupling with the cooling module, with the light emitting diode received inside the transparent bulb.

8. The LED lamp as claimed in claim 7, wherein the transparent bulb extends to have a surface facing the assembling opening and air-guiding wall of the housing, so as to form a part of the air channel.