Led lamp

• US 20060050514A1
• Filed: 08/30/2005
• Published: 03/09/2006
• Est. Priority Date: 09/04/2004
• Status: Abandoned Application

• Current Assignee: Zweibruder Optoelectronics GmbH
• Original Assignee: Zweibruder Optoelectronics GmbH
• Inventors: Opolka, Harald
• Application Number:
  US11/215,774
• Publication Number:
  US 20060050514A1
• Time in Patent Office: Days
• US Class Current: 362/294
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• 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 3/061 the material being glass
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lamp has an at least partially transparent globe and a base carried on the globe, forming a passive heat-dissipating sink, and fittable in a socket. An LED is fitted to an inner surface of the base. Heat-generating driver circuitry connected to the LED is in heat-conducting contact with the base.

Claims

1. A lamp comprising:

an at least partially transparent globe;

a base carried on the globe, forming a massive heat-dissipating sink, and fittable in a socket;

an LED fitted to an inner surface of the base; and

heat-generating driver circuitry connected to the LED and in heat-conducting contact with the base.

2. The lamp defined in claim 1 wherein the base has an external formation adapted to mate with the socket.

3. The lamp defined in claim 2 wherein the formation is a screwthread.

4. The lamp defined in claim 1 wherein the circuitry includes a transformer.

5. The lamp defined in claim 1 wherein the base has an extension projecting into the globe and forming the surface carrying the LED.

6. The lamp defined in claim 1 wherein the base is formed with heat-dissipating ribs.

7. The lamp defined in claim 1 wherein the base is formed with at least one heat-dissipating bore.

8. The lamp defined in claim 1 wherein the base comprises:

an externally and internally threaded sheet-metal shell adapted to fit a standard incandescent-bulb socket;

a massive metallic element threaded snugly into the shell and in intimate heat-exchange contact therewith; and

a tubular extension projecting inward from and formed unitarily with the element and having an inner end forming the surface carrying the circuitry and LED.

9. The lamp defined in claim 8 wherein the extension is provided with at least one radially projecting heat-dissipating disk.