High efficient tubular light emitting cylinder

• US 20020196623A1
• Filed: 08/15/2001
• Published: 12/26/2002
• Est. Priority Date: 06/21/2001
• Status: Active Grant

• Current Assignee: Star-Reach Corp.
• Original Assignee: Star-Reach Corp.
• Inventors: Yen, George
• Granted Patent: US 6,612,717 B2
• Time in Patent Office: Days
• US Class Current: 362/245
• CPC Class Codes: F21S 2/00 Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
• CPC Class Codes: F21S 4/26 of rope form, e.g. LED lighting ropes, or of tubular form
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 19/0045 by tongue and groove connections, e.g. dovetail interlocking means fixed by sliding
• CPC Class Codes: F21V 29/74 with fins or blades
• 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 29/89 Metals
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

A high efficient tubular light emitting cylinder is disclosed. The high efficient tubular light emitting cylinder is especially an LED tubular light emitting cylinder which can be installed and maintained easily and has a high light emitting efficiency. The tubular light emitting cylinder has a plurality of light emitting segments. The light emitting segments are connected in series. The connected light emitting segments are installed in a tubular light emitting cylinder for improving the light emitting efficiency. The light emitting segments can be taken out from the light emitting cylinder easily so that the light emitting cylinder can be installed and maintained easily and conveniently.

Claims

1. A high efficient tubular light emitting cylinder having a plurality of strip light sources;

the strip light source being placed in a light emitting cylinder, the light emitting cylinder having a diffusing layer, a reflecting layer, and a light mixing layer;

thereby, light of the strip light sources emitting out of the light emitting cylinder with an angle of approximate 90 degrees to a surface of the light emitting cylinder, thereby, a uniform light emitting area and a soft light effect being achieved.

2. The high efficient tubular light emitting cylinder as claimed in claim 1, wherein the strip light source is formed by installing a plurality of LEDs on a circuit board so as to acquire a light emitting segment, and then connecting a plurality of light emitting segments by an electric wire or a soft circuit board.

3. The high efficient tubular light emitting cylinder as claimed in claim 1, wherein each light emitting segment is attached to an aluminum metal heat dissipating device with a plurality of trenches.

4. The high efficient tubular light emitting cylinder as claimed in claim 1, wherein a track is formed in the tubular light emitting cylinder;

thereby, each light emitting segment is installed in the track and can be taken out from the track.