Led lamp tube

• US 20050122742A1
• Filed: 12/04/2003
• Published: 06/09/2005
• Est. Priority Date: 12/02/2003
• Status: Abandoned Application

• Current Assignee: Sung Tao Ho
• Original Assignee: Sung Tao Ho
• Inventors: Ho, Sung Tao
• Application Number:
  US10/729,181
• Publication Number:
  US 20050122742A1
• Time in Patent Office: Days
• US Class Current: 362/615
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21V 5/02 of prismatic shape F21V5/04 takes precedence
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G09F 13/04 Signs, boards or panels, illuminated from behind the insignia
• CPC Class Codes: H01L 33/483 Containers

Abstract

A LED lamp tube is constructed to include a light-guide shade and a light source mounted inside the light-guide shade, the light-guide shade having a light guide layer, two mounting portions extended from the light guide layer at two sides for mounting, and protruding portions arranged inside the light guide layer and defining a respective light guiding groove for producing a respective luminous arc when radiated with light, the light source being a circuit board holding a plurality of light emitting diodes that are controlled to emit light onto the light guiding grooves of the protruding portions to further produce luminous arcs.

Claims

1. A LED lamp tube comprising:

a light-guide shade, said light-guide shade comprising a light guide layer, two mounting portions extended from two opposite sides of said light guide layer for mounting, and a plurality of protruding portions arranged inside said light guide layer, said protruding portions each defining a light guiding groove for producing a luminous arc when radiated with light; and

a light source, said light source comprising a circuit board mounted inside said light-guide shade, and a plurality of light emitting diodes mounted in said circuit board and adapted to emit light onto the light guiding grooves of said protruding portions to further produce luminous arcs.

2. The LED lamp tube as claimed in claim 1, wherein said light guide shade is molded from one of transparent and opaque plastic materials.

3. The LED lamp tube as claimed in claim 1, wherein said protruding portions are arranged to form one of serrated, arched, and corrugated structures.

4. The LED lamp tube as claimed in claim 1, wherein said protruding portions are spirally arranged inside said light guide layer.

5. The LED lamp tube as claimed in claim 1, wherein said light-guide shade has at least one linear coupling groove.

6. The LED lamp tube as claimed in claim 1, wherein said circuit board comprises a control circuit.

7. The LED lamp tube as claimed in claim 1, wherein said light emitting diodes have different colors.

8. The LED lamp tube as claimed in claim 1, wherein said light-guide shade has an outside wall coated with a layer of photo mask selected from colored, colorless, and frosted semitransparent photo masks.

9. The LED lamp tube as claimed in claim 1, wherein said light-guide shade is mounted with a reflector.

10. The LED lamp tube as claimed in claim 9 further comprising a reflector fastened with said light-guide shade in a lamp box.

11. The LED lamp tube as claimed in claim 1, wherein said circuit board of said light source is connected to an external controller (DMX controller or personal computer) that controls the lighting pattern of said light emitting diodes.

12. The LED lamp tube as claimed in claim 1, wherein said circuit board of said light source has electric connector means for connection to external circuit means.