LED LAMP

• US 20100177522A1
• Filed: 01/15/2009
• Published: 07/15/2010
• Est. Priority Date: 01/15/2009
• Status: Active Grant

• Current Assignee: Yeh-Chiang Technology Corp.
• Original Assignee: Yeh-Chiang Technology Corp.
• Inventors: LEE, Ke-Chin
• Granted Patent: US 8,021,025 B2
• 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 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• 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 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• 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 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 2115/10 Light-emitting diodes [LED]

Abstract

An LED lamp has a base, a tubular conductor, a bulb and at least one LED. The base is metallic and has an electrical connector. The tubular conductor is filled with a fluid and mounted on the base and has a distal end and a proximal end. The bulb is pellucid and connected to the base. The at least one LED is mounted on the distal end of the tubular conductor and electrically connected to the connector of the base. The fluid in the tubular conductor may vaporize close to operating temperatures of the LED so transports heat away from the LED quickly and efficiently so allowing high power or multiple LEDs to be implemented, so improving brightness of the LED lamp and commercial applications.

Claims

1. An LED lamp comprising

a base being metallic and comprising an electrical connector;

a tubular conductor being filled with fluid and comprising

an outer surface;

a proximal end being mounted on the base; and

a distal end;

a bulb being pellucid, being connected to the base; and

at least one LED being attached to the tubular conductor and electrically connected to the connector of the base.

2. The LED lamp as claimed in claim 1 further comprising multiple fins and a supporter, wherein

the bulb further has an opening;

the base mechanically holds the second end of the tubular conductor and seals the opening of the bulb;

the tubular conductor further has an outer surface;

the distal end of the tubular conductor is located within the bulb;

the LED is attached to the distal end of the tubular conductor or the outer surface of the tubular conductor near the distal end;

the multiple fins are attached to the outer surface of the tubular conductor near the second end; and

the supporter is attached to the second end of the tubular conductor and positioned inside the base and holds the multiple fins.

3. The LED lamp as claimed in claim 2, wherein

each of the multiple fins further comprises

a central hole;

and

at least one positioning hole; and

the supporter further comprises

at least one a positioning rod inserted respectively into the at least one positioning hole for holding the multiple fins.

4. The LED lamp as claimed in claim 3 further comprising a controller being attached to the supporter and electrically connected to the LED and to the connector.

5. The LED lamp as claimed in claim 3 further having a ring being attached to the outer surface of the tubular conductor next to the multiple fins, sealing the opening of the bulb and holding the bulb.

6. The LED lamp as claimed in claim 5, wherein

the multiple fins further comprises

a central hole;

and

at least one positioning hole; and

the supporter further comprises

at least one a positioning rod inserted respectively into the at least one positioning hole for holding the multiple fins.

7. The LED lamp as claimed in claim 6 further comprising a controller being attached to the supporter and electrically connected to the LED and to the connector.

8. The LED lamp as claimed in claim 7, wherein the distal end of the tubular conductor is polygonal and has multiple flat portions;

and the LED is attached to one flat portion of the distal end.

9. The LED lamp as claimed in claim 2, wherein the bulb further has multiple windows formed near the opening of the bulb.

10. The LED lamp as claimed in claim 1, wherein

the base is a metal housing and has

a mouth having an inner edge;

and

a bridge having two ends being attached to the inner edge of the mouth of the base; and

the tubular conductor thermally contacts the inner edge of the mouth of the base and the bridge.

11. The LED lamp as claimed in claim 10, wherein

the outer surface of the tubular conductor near the distal end and the outer surface of the tubular conductor near the second end thermally contact the bridge of the base.

12. The LED lamp as claimed in claim 11, wherein

the outer surface of the tubular conductor near the distal end are primarily attached to the bridge of the base;

and

the tubular conductor is bent outwards from the bridge of the base allowing the distal end of the tubular conductor being located within the bulb.

13. The LED lamp as claimed in claim 11, wherein

the base has an inner surface and a bottom;

and

the bridge of the base extends and is attached to the inner surface and the bottom of the base.

14. The LED lamp as claimed in claim 13, wherein

the connector of the base comprises a tip contact and a screw thread contact;

and

the tip contact and the screw thread contact of the connector are connected to the LED respectively.

15. The LED lamp as claimed in claim 1, wherein

the connector of the base comprises a tip contact and a screw thread contact;

and

the tip contact and the screw thread contact of the connector are connected to the LED respectively.

16. The LED lamp as claimed in claim 13, wherein

the connector of the base comprises two contact pins electrically connected to the LED respectively.

17. The LED lamp as claimed in claim 1, wherein

the connector of the base comprises two contact pins electrically connected to the LED respectively.