LED lighting lamp tube

• US 7,476,004 B2
• Filed: 08/20/2007
• Issued: 01/13/2009
• Est. Priority Date: 02/21/2005
• Status: Expired due to Fees

• Current Assignee: Sze Keun Chan
• Original Assignee: Sze Keun Chan
• Inventors: Chan, Sze Keun
• Primary Examiner(s): O'Shea; Sandra
• Assistant Examiner(s): Cranson; James W
• Application Number:
  US11/841,090
• Publication Number:
  US 20080037245A1
• Time in Patent Office: 512 Days
• Field of Search: 362/239, 362/240, 362/294
• US Class Current: 362/240
• CPC Class Codes: F21K 9/278 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: F21W 2121/00 Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A LED lighting lamp tube comprises a transparent tube body, lamp caps, electrode pins, pedestals mounted at the connection position of the transparent tube body and the lamp caps, a power supply converter located adjacent to the lamp caps and inside the tube body, a PCB and a plurality of LED mounted on the PCB. These LED are connected in parallel or in series, and a light-scattering plate may be disposed over these LED. A plurality of LED chips can be directly mounted on the light-scattering plate. The lamp caps and the electrode pins possess the same international standards as common lamp tubes.

Claims

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

a transparent tube body;

lamp caps at ends of the body;

electrode pins protruding from the lamp caps;

pedestals mounted at a junction of the transparent tube body and the lamp caps;

a power supply converter located adjacent to the lamp caps and inside the tube body;

a printed circuit board (PCB) inside the tube body and secured to the pedestals;

a plurality of LEDs connected in series or parallel and mounted on the PCB;

a power supply converter connected between the electrode pins and the PCB to provide direct current voltage to the LEDs; and

a light-scattering plate disposed around the LEDs;

wherein the LEDs comprise LED chips embedded into the light-scattering plate.

2. The LED lighting lamp tube of claim 1, further comprising:

a radiator plate under the light scattering plate,

wherein the LEDs comprise LED chips installed on the radiator plate.

3. An LED lighting lamp tube, comprising:

a transparent tube body;

lamp caps at ends of the body;

one or more radiator pedestal attached to the tube body proximate to the lamp caps, the one or more radiator pedestal having a series of radiator leafs at spaced intervals;

a power supply converter located adjacent to the lamp caps and inside the tube body;

a printed circuit board (PCB) inside the tube body and secured to the one or more radiator pedestal;

a plurality of LEDs connected in series or parallel and mounted on the PCB; and

a power supply converter connected between a power cord and the PCB to provide direct current voltage to the LEDs.

4. The LED lighting lamp tube of claim 3, wherein the power supply converter is installed in either one or both of the lamp caps.

5. The LED lighting lamp tube of claim 3, wherein the lamp caps are made of heat conductive material.

6. The LED lighting lamp tube of claim 3, wherein the tube body is made of transparent or translucent materials.

7. The LED lighting lamp tube of claim 3, wherein an inner surface of the tube body comprises a wave-like shape with convex and concave portions.

8. The LED lighting lamp tube of claim 3, wherein an outer surface of the tube body comprises a smooth shape.

9. The LED lighting lamp tube of claim 3, further comprising:

a light-scattering plate disposed around the LEDs.

10. The LED lighting lamp tube of claim 3, further comprising:

a light-scattering plate disposed around the LEDs.

11. The LED lighting lamp tube of claim 10, wherein the LEDs comprise LED chips embedded into the light-scattering plate.

12. The LED lighting lamp tube of claim 10, further comprising:

a radiator plate under the light scattering plate,

wherein the LEDs comprise LED chips installed on the radiator plate.