WO2007094531A1

WO2007094531A1 - Led lighting apparatus and method for manufacturing the same

Info

Publication number: WO2007094531A1
Application number: PCT/KR2006/001356
Authority: WO
Inventors: Sung Ho Lee
Original assignee: Daejinad.Com
Priority date: 2006-02-13
Filing date: 2006-04-12
Publication date: 2007-08-23
Also published as: KR20070081490A

Abstract

The present invention discloses an LED lighting apparatus and a method of manufacturing the same. The LED lighting apparatus includes a circuit board on which an LED is installed; an electric wire integrally formed with a case so that the electric wire passes through a baseplate of the case; and a piece penetrating a power supplying node to contact the electric wire.

Description

LED LIGHTING APPARATUS AND METHOD FOR MANUFACTURING THE SAME

Technical Field

[1] The present invention relates to a light apparatus using an LED and a method for manufacturing the same and, more particularly, to an LED light apparatus and a method for manufacturing the same in which a manufacturing process is simple, a manufacturing cost is low, productivity is high, and light is emitted from both sides of the light apparatus, so that a use is various.

Background Art

[2] An LED stands for a light emitting diode and is a device which emits light when an electric current flows to a PN junction of a compound semiconductor such as GaP or GaAs. An LED which generates light having a certain wavelength is fabricated by adjusting a composition ratio of a semiconductor compound.

[3] The LED is used for a medical instrument using a predetermined wavelength region or for hastening the growth of a plant. Due to advantages of low power consumption and high brightness, the LED is employed in various fields such as a signal light, a rear lamp of a vehicle, or an outdoor advertising device.

[4] FIGs. 1 and 2 are drawings showing a conventional LED lighting apparatus.

[5] As shown in FIGs. 1 and 2, the conventional LED lighting apparatus includes a plurality of LED modules. A plurality of LED modules are arranged at a regular interval and connected by an electric wire 3. Each of the LED modules includes a printed circuit board (PCB) 2 on which LEDs 25 are mounted, the electric wire 3 for supplying an electric power to the PCB 2, a case 1 for accommodating the PCB2, and an epoxy filler for fixing the PCB 2 accommodated in the case 1.

[6] The conventional LED lighting apparatus is fabricated as follows. Injection-molded is first the case 1 in which opening portions 17 are formed in both sides of a baseplate 16 on which a PCB 2 is to be putted. The LEDs 25 are coupled to the PCB 2. The electric wire 3 is connected to power supplying nodes 21 and 22 of the PCB 2 by soldering. Then, the PCB 2 is inserted into a space 15 of the case 1 while inserting wire fixing caps 31 having the electric wire 3 through the opening portions 17 formed in both sides of the case 1. Finally, the epoxy filler is filled in the empty space 15 of the case 10, thereby completing the lighting apparatus.

[7] However, the conventional LED lighting apparatus has a disadvantage in that the electric wire 3 is coupled to the power supplying nodes 21 and 22 by soldering and thus a manufacturing time is lengthy, leading to low productivity. [8] In more detail, in order to couple the electric wire 3, a cover of an end portion of the electric wire 3 having a predetermined length is removed, and the electric wire 3 is coupled by soldering the cover-removed end portion thereof to the power supplying nodes 21 and 22. Per one LED module, soldering of four times is needed, resulting in very low productivity. Such low productivity is a cause for raising the manufacturing cost.

[9] In addition, since the PCB 2 is installed on only one side of the case 1, light is emitted in a single direction. The LED light emitting apparatus having the above described structure has no problem when it is installed on the wall, but the use is limited in case where light should be emitting from both sides such as a standing signboard. Disclosure of Invention

Technical- Problem

[10] It is an object of the present invention to provide an LED light apparatus and a method for manufacturing the same in which a manufacturing process is simple, a manufacturing cost is low, productivity is high, and light is emitted from both sides of the light apparatus, so that a use is various.

[11] In order to achieve the above object, an exemplary embodiment of the present invention provides a method for manufacturing an LED lighting apparatus, comprising: forming integrally an electric wire for supplying an electric power to a PCB on which an LED is installed and a case so that the electric wire passes through a baseplate of the case; and penetrating a power supplying node with the piece so that the piece contacts the electric wire.

[12] The exemplary embodiment of the present invention provides an LED lighting apparatus, comprising: a circuit board on which an LED is installed; an electric wire integrally formed with a case so that the electric wire passes through a baseplate of the case; and a piece penetrating a power supplying node to contact the electric wire.

[13] A guide projection is formed on the baseplate, and a guide hole is formed at a location of the PCB corresponding to the guide projection.

[14] The baseplate is arranged to divide an internal space of the case, and the PCBs are installed on both sides of the baseplate.

Description of Drawings

[15] The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:

[16] FIG. 1 is a perspective view illustrating a conventional LED lighting apparatus;

[17] FIG. 2 is a plane view illustrating the conventional LED lighting apparatus; [18] FlG. 3 is a perspective view illustrating an LED module of an LED lighting apparatus according to an exemplary embodiment of the present invention;

[19] FIG. 4 is an exploded view illustrating the LED module of FIG. 3;

[20] FIG. 5 is a plane view illustrating a connection between the LED modules;

[21] FIG. 6 is a cross-sectional view illustrating the LED module of FIG. 3; and

[22] FIG. 7 is a plane view illustrating a case of the LED lighting apparatus according the exemplary embodiment of the present invention.

Best Mode

[23] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the thickness of layers and regions are exaggerated for clarity. Like numbers refer to like elements throughout the specification.

[24] FIG. 3 is a perspective view illustrating an LED module of an LED lighting apparatus according to an exemplary embodiment of the present invention, FIG. 4 is an exploded view illustrating the LED module of FIG. 3, FIG. 5 is a plane view illustrating a connection of the LED modules by the electric wire, FIG. 6 is a cross- sectional view illustrating the LED module of FIG. 3, and FIG. 7 is a plane view illustrating a case of the LED lighting apparatus according the exemplary embodiment of the present invention.

[25] Referring to FIGs. 3 to 7, instead of using the soldering, the electric wire 3 is coupled to the power supplying nodes 21 and 22 of the PCB 2 on which the LED 25 are mounted by using a piece 4.

[26] The case 1 and the electric wire 3 are integrally formed so that the electric wire 3 for supplying the electric power to the PCB 2 passes through the baseplate 10 of the case 1, and a tip of the piece 4 contacts the electric wire 3 by piercing the electric wire 3 with the piece 4.

[27] The electric wire 3 may be buried by the baseplate 10, but it is preferred that a surface of the electric wire 3 is exposed out of the baseplate 10 for easy coupling using the piece 4.

[28] The PCB 2 installed on the baseplate 10 needs to be exactly located. To this end, a guide projection 11 is formed on the baseplate 10, and a guide hole 20 is formed at a corresponding location of the PCB 2, so that the PCB 2 can be always installed at an exact location. As a result, the tip of the piece 4 which penetrates the power supplying nodes 21 and 22 can exactly contact the corresponding electric wire 3. [29] Supporter 13 and 14 for supporting the PCB 2 may be formed at a location where an inner sidewall 12 of the case 12 and the baseplate 10 contact and at a location where the inner sidewall 12 and the electric wire 3 contact. The supporter 14 formed at a location where the inner sidewall 12 and the electric wire 3 contact preferably has a piece hole 141 for the piece 4 to penetrate easily.

[30] The baseplate 10 is arranged to provide the same space 15 in both sides of the case

1 so that the PCBs 2 can be installed on both sides of the baseplate 10. Both sides of the baseplate 10 have the same structure and configuration. Thus, light can be emitted from both sides of the LED module.

[31] An epoxy or silicon filler is filled in the empty space 15 of the case 1 where the

PCBs 2 are installed on both sides to thereby fix the PCBs 2 and make the PCBs 2 watertight.

[32] In the LED lighting apparatus of the present invention, the electric power supplied through the electric wire 3 is supplied to the power supplying nodes 21 and 22 of each PCB 2 via the piece 4 to thereby emit light from the LEDs 25.

[33] As described above, instead of soldering, the electric wire is coupled to the power supplying nodes by simply rotating the piece, leading to a simple manufacturing process, a low manufacturing cost, and high productivity. Further, since light is emitted from both side of the LED lighting apparatus, it can be used in various field.

Claims

[1] A method for manufacturing an LED lighting apparatus, comprising: forming integrally an electric wire for supplying an electric power to a PCB on which an LED is installed and a case so that the electric wire passes through a baseplate of the case; and penetrating a power supplying node with the piece so that the piece contacts the electric wire. [2] An LED lighting apparatus, comprising: a circuit board on which an LED is installed; an electric wire integrally formed with a case so that the electric wire passes through a baseplate of the case; and a piece penetrating a power supplying node to contact the electric wire. [3] The apparatus of claim 2, wherein a guide projection is formed on the baseplate, and a guide hole is formed at a location of the PCB corresponding to the guide projection. [4] The apparatus of claim 2, wherein the baseplate is arranged to divide an internal space of the case, and the PCBs are installed on both sides of the baseplate. [5] The apparatus of claim 3, wherein the baseplate is arranged to divide an internal space of the case, and the PCBs are installed on both sides of the baseplate.