Flexible rod light and manufacturing method thereof

• US 6,682,205 B2
• Filed: 11/27/2002
• Issued: 01/27/2004
• Est. Priority Date: 04/16/2002
• Status: Expired due to Fees

• Current Assignee: Lin Yuan
• Original Assignee: Lin Yuan
• Inventors: Lin, Yuan
• Primary Examiner(s): Tso, Laura K.
• Application Number:
  US10/304,738
• Publication Number:
  US 20030193801A1
• Time in Patent Office: 426 Days
• Field of Search: 362/800, 362/249, 362/217, 362/222, 362/223
• US Class Current: 362/555
• CPC Class Codes: F21S 4/26 of rope form, e.g. LED lighting ropes, or of tubular form
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

Flexible rod light device and manufacturing method thereof are disclosed. The device comprises an inner layer including a plurality of equally spaced apart dents on a top groove; a string of LED lamps comprising a plurality of series connected units each including a LED lamp, two bent conductor sections with the LED lamp therein received, and a resistor; a pair of main wires parallel disposed in the inner layer proximate sides; and a jacket wrapped up the inner layer and the string of LED lamps. All LED lamps are secured and have the same orientation for achieving an increased illumination.

Claims

1. A method of manufacturing a flexible rod light device having concentrated light and increased flexibility to withstand a pulling thereof, the method comprising the steps of:

(a) wrapping a parallel pair of main wires in a substantially H-shaped inner layer formed of a flexible elongate plastic material proximate sides by molding;

(b) soldering an end of a resistor to an other end of a conductor section and the other end thereof to an other end of another adjacent conductor section and soldering terminals of a LED lamp to ends of the adjacent conductor sections for a unit including the LED lamp, two conductor sections, and the resistor;

(c) continuing step (b) to form a string of LED lamps including a plurality of units;

(d) bending the conductor sections of each unit and inserting straight portions of the conductor sections and the LED lamp of each unit into one of a plurality of dents on a top of the inner layer with two wing portions of the conductor sections rested on a top groove of the inner layer;

(e) disposing front most and rearmost conductor sections on the main wire in front and rear sides of the inner layer respectively; and

(f) wrapping up the inner layer and the string of LED lamps by a material the same as the inner layer by extruding to form a jacket.

2. A flexible rod light device having concentrated light and increased flexibility to withstand a pulling thereof, the light device comprising:

a substantially H-shaped inner layer formed of a flexible elongate transparent or half-transparent plastic material and including lengthwise top and bottom grooves and a plurality of equally spaced apart dents on the top groove;

a string of LED lamps comprising a plurality of series connected units each including a LED lamp, two substantially 90 degrees bent conductor sections with the LED lamp received in a substantially U section of the conductor sections and electrically connected thereto by connecting terminals of the LED lamp to one ends of adjacent conductor sections, and a resistor interconnecting the other end of the conductor section and the other end of the conductor section of an adjacent unit wherein straight portions of the conductor sections and the LED lamp of each unit are rested on the dent and two wing portions of the conductor sections are rested on the top groove;

a pair of main wires parallel disposed in the inner layer proximate sides wherein front most and rearmost conductor sections are rested on the main wires in front and rear sides of the inner layer respectively; and

a jacket, formed of the same material as the inner layer, wrapped up the inner layer and the string of LED lamps.

3. The device of claim 2, wherein the jacket has flat top and bottom surfaces so that light emitted from the LED lamps is concentrated in a direction perpendicular to the top surface.

4. The device of claim 2, wherein the inner layer further comprises a plurality of slots so that an excess length of the conductor section is capable of inserting into each slot.

5. The device of claim 2, wherein one or more dents are configured to receive one or more second resistors having a large resistance.

6. The device of claim 5, wherein an excess length of the coupled conductor section is capable of inserting into the same dent as the second resistor.

7. The device of claim 3, further comprising a plurality of parallel troughs formed on the top and the bottom surfaces of the jacket respectively.

8. The device of claim 2, wherein the jacket has a substantially rectangular cross-section.

9. The device of claim 2, wherein the jacket has a substantially square cross-section.