KR20080100929A - Led sign board and manufacturing method of the same - Google Patents

Abstract

An LED advertising board forming a connection break groove is provided to turn on the other LEDs even if connection is bad in a soldered part of one LED, and get a waterproof effect using a molding layer. An LED advertising board comprises the following steps; a step of forming a connection break groove(28) on an upper side of a copper plate(26) in which the insulating layer is adhered to a lower part, and forming to be adjacent a first and a second copper plate which is not electrically connected; a step of coating with a plurality of solder pastes(32) on the first and the second copper plate according to the connection break groove in order to be shown up a desired character and design; a step of setting a plurality of LEDs(2) in the upper side of the solder paste; a step of connecting LEDs on the first and second copper plate; a step of wiring a predetermined part of the first and second copper plate and a power terminal; a step of forming a molding layer on the first and second copper plate; and a step of forming a coating layer on the upper side of the molding layer.

Description

LED billboard and manufacturing method {LED SIGN BOARD AND MANUFACTURING METHOD OF THE SAME}

1 is a side cross-sectional view showing the configuration of an LED according to a conventional embodiment,

2 is a view showing a process of cutting the connection blocking groove of the LED billboard according to an embodiment of the present invention,

3 is a view showing a clean lead and LED mounting process of the LED billboard according to an embodiment of the present invention,

4 is a view showing a wiring connection process of the LED billboard according to an embodiment of the present invention;

5 is a view showing a molding process of the LED billboard according to an embodiment of the present invention,

6 is a view illustrating an acrylic layer coating process of the LED billboard according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

20: LED module, 22: mounting plate,

24: Epoxy resin layer, 26, 30: 1st, 2nd copper plate,

28: connection blocking groove, 32: cream solder,

34a, 34b: wiring, 36: molding layer,

38: coating layer.

The present invention relates to an LED advertising board and a method of manufacturing the same, and more specifically, to enable fast and easy wiring of the LED to the mounting plate in which the copper foil plate and the epoxy plate is laminated, and even if the contact portion of any one of the LED is poor It relates to an LED billboard and a method of manufacturing the LED to be all lit, waterproofing.

As is well known, LIGHT-EMITTING DIODE has a rectangular parallelepiped chip having upper and lower crystal layers physically connected to upper and lower active regions and electrodes provided above and below the crystal layer, and having a chip of the chip light emitting diode. It is a structure protected by the mold forming the appearance.

Referring to the structure of a conventional light emitting diode (LED) 2 through FIG. 1, a first terminal 6 connected to one stem 4 is provided, and a pellet 8 is provided on an upper surface of the stem 4. Is connected, and the phosphor 10 coated to enclose the pellet 8 is provided, and the second terminal 14 connected by the pellet 8 and the gold bonding wire 12 is constituted, and the inside A part of the interior is molded by the molding material 16, and the outside thereof has a structure covered by a cap 18 provided with a glass lens.

Such a light emitting diode has been extended to a display function such as an advertisement due to the characteristic of maximizing light utilization efficiency with low power consumption.

Briefly, referring to a light circuit of a light emitting diode used in an advertisement device, a light emitting unit in which a plurality of LEDs are arranged in a matrix structure, a power supply unit applying an AC or DC voltage to the light emitting unit, and closed together with the light emitting unit and the power supply unit It includes a variable resistor for controlling the current flowing to the light emitting unit to form a loop, the light emitting unit is a plurality of LEDs are connected in series in a row unit to produce a variety of displays by separating the whole row in a predetermined group connected in the opposite direction This is to be done.

In addition, in order to install LED, each installation hole (not shown) is formed in the form of a desired character or figure on a signboard base plate (not shown), and both terminals 6 of the LED 2 are provided through the said installation hole. 14) is wired from the back of the insertion

However, in the conventional installation structure of such a light emitting diode, since a plurality of LEDs are connected in series through a single wiring, when a failure occurs in any one LED, all LEDs connected to the column to which the LED belongs do not conduct current and do not turn on. There was a problem. That is, there is a problem in that a closed loop cannot be formed by a faulty LED.

In addition, when installing the LED, the installation holes must be formed on the plate in the form of letters or figures, and each LED must be fixed by mobilizing the LED fixing means. In general, the signboard is protruded to the outside, so it is not possible to fundamentally solve the infiltration of rainwater during use, there are various problems such as the short circuit, such as a short circuit.

In addition, due to the structure in which only the head of the LED protrudes on the base plate there is a problem that can not maximize the luminous effect and obtain a three-dimensional effect.

The present invention has been made in view of the above-described prior art, and forms a connection blocking groove along a letter shape in a mounting plate on which a copper foil plate and an epoxy plate are laminated, and the LED is divided into two mounting plates through the connection blocking groove. Solder the terminals on both sides, and molding the front of the mounting plate with synthetic resin for quick and easy wiring of LEDs, and to ensure that all other LEDs are lit and waterproofed even if the soldering part of one LED is poor. An object of the present invention is to provide an LED billboard and a method of manufacturing the same.

In order to achieve the above object, according to a preferred embodiment of the present invention, by forming a connection blocking groove on the upper surface of the copper foil plate with an insulating layer at the bottom, the first and second copper foil plates that are not electrically connected to each other Forming a first process; A second process of applying a plurality of cream solders on the first and second copper foils along the connection blocking grooves so that a desired letter or design appears; A third step of mounting the LED on the upper surface of the cream lead; A fourth step of causing the LED to be connected on the first and second copper foils by heating and melting the cream lead; A fifth process of wiring a predetermined portion and a power supply terminal on said first and second copper foils; A sixth process of forming a molding layer on the first and second copper foils; Provided is a manufacturing method of an LED billboard, comprising a seventh process of forming a coating layer on the upper surface of the molding layer.

Preferably, the first process is to provide a manufacturing method of the LED billboard, characterized in that the connection blocking groove is automatically formed by using the substrate pattern design software and CNC equipment.

Preferably, the fourth process is a method of manufacturing an LED billboard, characterized in that the cream lead is melted by melting through a heating plate, or by conducting a current through the first and second copper foil.

Preferably, in the third process, any one polarity terminal of each LED is connected to the first copper foil, and the other polarity terminal is connected to the second copper foil. This is provided.

On the other hand, there is provided an LED billboard produced by the above manufacturing method.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail with reference to drawings.

2 is a view showing a process of cutting the connection blocking groove of the LED billboard according to an embodiment of the present invention.

Referring to this, the LED billboard according to an embodiment of the present invention is a billboard that is formed of a plurality of LED modules 20 to display a specific character by mounting a plurality of LEDs to form an entire billboard, one embodiment of the present invention According to the LED advertising board according to the example, a connection blocking groove is formed along a letter shape on a mounting plate on which a copper foil plate and an epoxy plate are laminated, and soldered both terminals of the LED to each mounting plate divided into two through the connection blocking groove. By molding the front surface with synthetic resin, LED wiring can be made quickly and easily. Even if the soldering part of one LED is poor, all other LEDs are turned on and waterproofing is made.

More specifically, the LED billboard according to an embodiment of the present invention has a structure in which the wiring connection of the LED is quick and does not cause the failure of another LED in the event of failure or wiring failure of one LED.

Therefore, the LED billboard according to the embodiment of the present invention, as shown in Figure 2, is composed of a non-conductive epoxy resin layer 24 at the bottom, the conductor is laminated on top of the epoxy resin layer 24 The mounting plate 22 consisting of the copper foil layer 26 is comprised.

In addition, by forming a connection blocking groove 28 in the copper plate layer 26 according to the received design, character, or design, the copper plate layer 26 is formed on the first copper plate through the connection blocking groove 28. The layer 26 and the second copper plate layer 30 are separated, and the first copper plate layer 26 and the second copper plate layer 30 are electrically separated by the connection blocking groove 28. Will have

At this time, the connection blocking groove 28 is a groove formed by using a known substrate pattern design software and a CNC (Computer Numerical Control) machine tool.

For example, as shown in the figure, if the word “a” of “agutang” is to be designed as a letter of an advertisement board, a mounting plate made of a copper plate layer 26 that is a conductor laminated on the epoxy resin layer 24 is formed. A connection blocking groove 28 is formed on the upper surface of the 22 using well-known substrate pattern design software and a CNC (Computer Numerical Control) machine tool, and the first copper sheet layer 26 and the second copper sheet layer ( 30).

In this case, the first copper foil layer 26 is a single copper foil layer, and is in an electrically connected state, and the second copper foil layer 30 is similarly a single copper foil layer and is in an electrically connected state. The first copper foil layer 26 and the second copper foil layer 30 have a state in which they are not electrically connected due to the connection blocking groove 28. Moreover, in the inside of the said 1st copper foil layer 26, the 2nd copper foil layer 30 isolate | separated from the 1st copper foil layer layer 26 is its position by the epoxy resin layer 24 of the said lower part. It is not separated and separated, but is fixed at a fixed position.

3 is a view showing a clean lead and LED mounting process of the LED billboard according to an embodiment of the present invention, Figure 4 is a view showing a wiring connection process of the LED billboard according to an embodiment of the present invention, Figure 5 is a view illustrating a molding process of the LED billboard according to an embodiment of the present invention, Figure 6 is a view showing an acrylic layer coating process of the LED billboard according to an embodiment of the present invention.

2, a plurality of cream solders are formed on the upper surfaces of the first copper foil layer 26 and the second copper foil layer 30 formed around the connection blocking groove 28. (32) is applied as shown in FIG.

The cream lead 32 applied to the specific position of the said 1st copper foil layer 26, and the 2nd copper foil layer of the position adjacent to the application position of the cream lead 32 of the said 1st copper foil layer 26 ( 30) The cream lead 32 is also applied to the upper surface, and the cream lead 32 is provided at a plurality of positions on the upper surface of the first copper plate layer 26 and the second copper plate layer 30 along the connection blocking groove 28. Will be applied. At this time, the cream lead 32 is a position for attaching the LED 2 and emitting light, and when the application position of the cream lead 32 is connected, a desired letter or design shape should be formed. In addition, the cream lead 32 is not applied along both the upper surface of the first copper plate layer 26 and the second copper plate layer 30 on which the connection blocking grooves 28 are formed. The application of the cream lead 32 should be omitted around the connection blocking groove 26 in a position other than the shape of the LED 2 so that the correct character or design can be emitted.

On the other hand, when the application of the cream lead 32 is completed, the first and second terminals of the LED 2 are respectively seated on the upper surface of the cream lead 32, and the cream lead 32 is heated using a heater such as a hot plate. ) Or electrically conducting electricity to the first copper foil layer 26 and the second copper foil layer 30 so that the cream lead 32 is melted, whereby the LED 2 is cream lead. The first copper foil layer 26 and the second copper foil layer 30 are attached to each other via 32.

That is, when the first terminal of the LED 2 is connected on the first copper plate layer 26, the second terminal of the LED 2 is connected on the second copper plate layer 30. All the LEDs 2 are thus connected to the first copper foil layer 26 and the second copper foil layer 30.

Thus, when the first terminals of all the LEDs 2 are connected to the top surface of the first copper foil layer 26, the first terminals of all the LEDs 2 are in series due to the first copper foil layer 26. In a connected state, on the contrary, when the second terminals of all the LEDs 2 are connected to the upper surface of the second copper thin plate layer 30, the second terminals of all the LEDs 2 are the second copper thin plate layers. (26), the state is connected in series.

Therefore, the LED billboard according to the embodiment of the present invention, as shown in Figure 4, the wiring 34a (only at one position of the first copper foil layer 26 and the second copper foil layer 30, respectively ( When the connection is made through 34b), all the LEDs 2 connected to the first copper foil layer 26 and the second copper foil layer 30 are in a conductive state, so that the quick wiring connection is completed.

In this case, each of the wirings 34a and 34b wired to the first copper plate layer 26 and the second copper plate layer 30 is the first copper plate layer 26 and the second copper plate layer 30. It is preferable that the wirings 34a and 34b are not displayed because they have the same color as the color.

In addition, the upper surface of the first copper foil layer 26 and the second copper foil layer 30 of the present invention after the wiring process is applied to the molding layer 36 by applying a high insulating resin, usually a silicone-based molding member To form. The molding layer 36 may protect circuits and prevent light emission failure due to leakage prevention and leakage prevention of the LEDs 2 attached to the first copper plate layer 26 and the second copper plate layer 30. For sake.

In addition, the coating layer 38 formed by bonding an acrylic sheet or applying an acrylic member to the upper surface of the molding layer 36 of the first copper plate layer 26 and the second copper plate layer 30 after the molding process is completed Form.

In addition, each LED module 20 manufactured by the above process can be freely set to emit light in accordance with the light emission order set on a known circuit board (not shown).

On the other hand, the LED billboard according to the embodiment of the present invention manufactured by the above manufacturing process is connected to the plurality of LED (2), respectively, on the upper surface of the first copper plate layer 26 and the second copper plate layer 30 Because of the structure, even if one of the LEDs 2 fails, the remaining LEDs 2 emit light with a closed loop.

In addition, when the LED 2 is installed, a separate wiring is not connected to each LED 2, and thus workability is very excellent, and the molding layer 36 may fundamentally solve the penetration of rainwater during use.

On the other hand, the LED billboard and its manufacturing method according to an embodiment of the present invention is not limited to the above embodiment, but various modifications can be made without departing from the technical gist thereof.

As described above, the LED billboard and the method of manufacturing the same according to the present invention have a structure in which a plurality of LEDs are respectively connected to the upper surfaces of the first copper plate layer and the second copper plate layer, so that even if one LED fails, the remaining LEDs The closed loop is formed and emits light. Also, when LED is installed, it does not connect a separate wiring to each LED, so the workability is very excellent, and the molding layer can fundamentally solve the infiltration of rainwater during use. There is this.

Claims (5)

Forming a connection blocking groove on an upper surface of the copper foil plate having an insulating layer at a lower portion thereof, thereby forming first and second copper foil plates which are not electrically connected to each other; A second process of applying a plurality of cream solders on the first and second copper foils along the connection blocking grooves so that a desired letter or design appears; A third process of seating a plurality of LEDs on an upper surface of the cream lead; A fourth step of causing the LED to be connected on the first and second copper foils by heating and melting the cream lead; A fifth process of wiring a predetermined portion and a power supply terminal on said first and second copper foils; A sixth process of forming a molding layer on the first and second copper foils; The manufacturing method of the LED billboard, characterized in that consisting of a seventh process of forming a coating layer on the upper surface of the molding layer. The method of claim 1, wherein the first process is to allow the connection blocking groove to be automatically formed using the substrate pattern design software and the CNC equipment. 2. The LED of claim 1, wherein the third process is such that any one polarity terminal of each LED is connected to the first copper foil, and the other polarity terminal is connected to the second copper foil. Method of manufacturing the billboard. The method of claim 1, wherein the fourth process is to melt the cream lead by heating through the heating plate, or by conducting a current through the first and second copper foil. LED billboard produced by the manufacturing method of claim 1.

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