Light diffusion bar

• US 20060087838A1
• Filed: 10/25/2004
• Published: 04/27/2006
• Est. Priority Date: 10/25/2004
• Status: Abandoned Application

• Current Assignee: Zdenko Grajcar
• Original Assignee: Zdenko Grajcar
• Inventors: Grajcar, Zdenko
• Application Number:
  US10/972,489
• Publication Number:
  US 20060087838A1
• Time in Patent Office: Days
• US Class Current: 362/227
• 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 3/02 characterised by the shape
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light bar including a light strip comprising a series of light emitting diode chips mounted on a base; a plurality first diffusers each disposed over and secured about one light emitting diode chip; a tube having a first lumen and a second lumen, the first lumen and second lumen being out of axial alignment, the first lumen being defined at least in part by a second diffuser, the second lumen being defined at least in part by a third diffuser, the tube being circular in cross section, the light strip disposed in the first lumen; and depressible end caps joined to each end of the tube, the end cap being positioned adjacent a wire for communicating electrical current between adjacent light strips in adjacent tubes, the end caps being positionable against a surface and being sufficiently depressible to allow for expansion and contraction of the tube without avoiding the contact between the end cap and the surface.

Claims

1. A light bar comprising:

a light strip comprising a series of light emitting diodes mounted on a base;

a plurality first diffusers each disposed over and attached to one light emitting diode;

a tube having a first lumen and a second lumen, the first lumen and second lumen being out of axial alignment, the first lumen being defined at least in part by a second diffuser, the second lumen being defined at least in part by a third diffuser, the tube being circular in cross section, the light strip disposed in the first lumen; and

depressible end caps joined to each end of the tube, the end cap positioned adjacent wires communicating electrical current between adjacent light strips in adjacent tubes, the end caps being positionable against a surface and being sufficiently depressible to allow for expansion and contraction through outdoor temperature variations of the tube without avoiding the contact between the end cap and the surface.

2. The light bar of claim 1 wherein the series light emitting diodes are arranged linearly.

3. The device of claim 1 wherein the first diffuser is a epoxy drop.

4. The device of claim 1 wherein the light bar upon being heated is sufficiently flexible to bend around to form a design.

5. The device of claim 4 wherein the light bar has a bend radius of 24 inches and bend factor of 30 at room temperature and bend radius of 4.5 inches and bend factor of 6 at a temperature not exceeding the melting temperature of the material.

6. The device of claim 4 wherein the light emitting diodes in conjunction with the first diffuser approximate an area light source.

7. The device of claim 4 wherein at least 50% of light rays from the light emitting diode are reflected before passing through the first diffuser.

8. The device of claim 1 wherein the light bar is sized and configured to connect to existing neon tube holders.

9. The light bar of claim 1 wherein the first lumen is defined between the second and third diffusers.

10. A light bar comprising:

a light strip comprising a series of light emitting diodes chip mounted on a base;

a plurality first diffusers each disposed about and joined directly to one light emitting diode chip; and

a tube slidably engaging the light strip.

11. The device of claim 10 wherein the light emitting diode chips are arranged linearly.

12. The device of claim 10 wherein the base is disposed in a lumen defined in the tube.

13. The device of claim 10 wherein the base is joined to the first diffuser.

14. The light bar of claim 10 further comprising an adjacent light bar and a wire connector providing electrical continuity between the diodes of one light bar with the diodes of the adjacent light bar.

15. A simulated neon tube light comprising:

a light strip comprising a series of light emitting diode chips mounted on a base;

at least one first diffuser operably joined to one of the light emitting diode chips;

a tube having an outer wall;

an interior wall cooperating with the outer wall to define a first lumen, the first lumen having a central axis, the interior wall being a second light diffuser, the light strip being disposed in the first lumen; and

a second lumen defined at least in part by the outer wall, the second lumen having a central axis offset and parallel to the central axis of the first lumen, the outer wall adjacent the second lumen being a third light diffuser.

16. The device of claim 15 further comprising a plurality of first diffusers wherein the first diffusers are epoxy drops disposed on each diode.

17. The device of claim 15 wherein the outer wall and interior wall are monolithic.

18. The device of claim 15 wherein each first diffuser is secured to one light emitting diode chip.

19. The device of claim 15 further comprising a deformable end cap disposed at each end of the tube.

20. The device of claim 19 wherein the end caps are depressible allowing for expansion and contraction of the light bar while remaining in contact with adjacent light bars.