KR101195975B1 - Led display panel with a plurality of light guiding panels - Google Patents

Abstract

PURPOSE: An LED advertising board is provided to make brightness uniform by preventing the generation of a shadow due to an interval between miniature light guide plates. CONSTITUTION: An advertisement housing(2) is comprised of a cover(21) and a main body(22). A light guide plate assembly(4) is installed inside the advertisement housing. A plurality of miniature light guide plates(41) in which a reflective sheet(415) is attached is consecutively arranged on the rear side of the light guide plate assembly. A light emitting unit(3) is installed on both sides of the light guide plate assembly, and between the miniature light guide plates. The light emitting unit is comprised of an LED lighting module(5) which sends light inside the plurality of miniature light guide plates. A pattern which is attached to the cover of the advertisement housing is printed on a sheet(6). [Reference numerals] (6) Signboard

Description

LED display panel having a plurality of light guide plate connection structure {LED DISPLAY PANEL WITH A PLURALITY OF LIGHT GUIDING PANELS}

The present invention relates to a LED billboard having a plurality of light guide plate connection structure, and more specifically to the light guide plate and the LED as a light emitting means inside the billboard, the light guide plate is connected to a plurality of small light guide plate by a connecting member to a large light guide plate The present invention relates to an LED billboard having a plurality of light guide plate connection structures for preventing shadows from occurring due to the spacing between the small light guide plates, thereby making the illuminance uniform.

In general, advertising boards display advertisements by displaying letters or patterns so that their names, products, and business items can be well represented in stores, companies, businesses, and institutions.

The billboard is provided with a light emitting means that is an illumination system therein in order to have an advertising effect at night as well as at night. That is, the advertisement board is formed in a three-dimensional shape to display the advertising text on a part of the outer surface, and the light emitting means is provided inside to display the advertising effect of the advertising text by the light emission of the light emitting means at night.

Conventionally, a plurality of fluorescent lamps are arranged as light emitting means of the billboard to transmit light to the entire billboard. However, the fluorescent lamp is difficult to deliver even light to the billboard due to the illumination difference according to the distance, and the increase in the number of installation of the fluorescent lamp for even light transmission has the disadvantage that the advertising cost increases.

Therefore, LED (Light Emitting Diode) has recently been used as a light emitting means for even light transmission while supplementing the above disadvantages. Since the LED provides a large illuminance compared to a small power consumption, the power consumption can be reduced compared to a fluorescent lamp, and has a semi-permanent life compared to a fluorescent lamp.

In Korean Patent No. 10-0819365, an advertisement phrase is displayed on a front panel of a billboard and a light source assembly is located between the rear panels. The light source assembly arranges a substrate (PCB) and mounts a plurality of LEDs on the substrate to emit light. This method can provide the same luminous effect with low power consumption compared to fluorescent lamps, but has the disadvantage of excessive manufacturing cost due to the substrate area and multiple LED mounting.

Of course, a method of reducing substrate cost by arranging a small square LED module line recently released at regular intervals may be used, but this also has a disadvantage in that uniform light transmission is difficult on the front of the billboard due to the gap between the LED modules.

Recently, an advertisement board using a light guide plate has been provided. That is, when the LED is disposed on the side of the light guide plate to irradiate the light with the light guide plate, the light is reflected from the light guide plate to the front side, so that the light can be transmitted to the front surface as uniformly as possible. Since it can be reduced, the power consumption is further lowered.

However, in spite of the above advantages, the method using the light guide plate increases the manufacturing cost as the size of the light guide plate increases and it is difficult to irradiate the LED light to the inside of the large light guide plate.

The LED billboard having a plurality of light guide plate connection structure of the present invention,

A plurality of small light guide plates are continuously connected to form one large light guide plate, and an LED is installed between each of the light guide plates to irradiate light to the light guide plate, and the part where the LED is installed is blocked from being directly irradiated to the front of the billboard. Even if it is formed, the entire billboard is intended to provide a device that provides the most uniform illuminance without generating shadows.

LED billboard having a plurality of light guide plate connection structure of the present invention for solving the above problems,

An LED billboard using a light guide plate and an LED, comprising: an advertising housing comprising a main body and a cover; A light emitting means including a light guide plate assembly installed inside the advertisement housing, the light guide plate assembly having a plurality of small light guide plates arranged in series, and an LED light emitting module installed between both side surfaces of the light guide plate assembly and each light guide plate to inject light into the light guide plate; It is configured to include; sheet paper printed with a pattern attached to the cover of the advertising housing.

The light guide plate assembly may be arranged in plurality so as to be spaced apart from the light guide plate at predetermined intervals, and the LED light emitting module disposed in the spaced space may be configured as a rod-shaped LED light, and one side or both sides toward the front of the LED light irradiation direction. By combining the shadow removal cover of the translucent material through the edge of the light guide plate of the LED light emitted from the front portion can be removed to be the same as the illuminance of the adjacent light guide plate.

In addition, the light guide plate assembly is formed by connecting a plurality of light guide plate side by a connection member, the connection member is formed as a vertical bar connecting the central portion of the two horizontal bars and the vertical bar located in the front and rear of the light guide plate, the opening is formed on both sides It is formed as a bar having a cross section of the shape of "Industrial", the side of the light guide plate is inserted into the opening by screwing, and a plurality of LEDs are mounted on the PCB by LED light emitting modules on both sides of the inner vertical bar of the connection member. An LED bar may be attached to allow the LED light to enter the side of the light guide plate.

In addition, the light guide plate assembly is arranged to contact the plurality of light guide plate side to each other, each side of the light guide plate to be interviewed to form a band-shaped mounting groove in the longitudinal direction, the installation groove is a plurality of LEDs on the PCB as an LED light emitting module The LED bar may be inserted to insert light into the light guide plate, and the LED bars may be back-bonded to each other so that light is irradiated in both directions.

LED billboard having a plurality of light guide plate connection structure of the present invention by the above solution means,

Since a plurality of small light guide plates can be connected to each other to be used as a large light guide plate, there is an effect of reducing the manufacturing cost and improving the transportability.

In particular, the LED light emitting module is installed between each light guide plate to maintain uniform light intensity of the entire light guide plate, and the LED light emitting module exposed by the cover is covered with a semi-transmissive cover or a connecting member so that the light is irradiated from the LED light emitting module. By blocking a part of the panel provides the effect of maintaining the illumination of the entire surface of the billboard as uniform as possible.

In addition, by using the LED of the LED light emitting module installed in a number of RGB LEDs, it is possible to produce a variety of colors by individually controlling.

In addition, even when changing the industry of the billboard business, only the cover sheet can be replaced and used without new installation of the signboard, and even the existing billboard that uses the existing fluorescent lamp as a light source is simply installed by replacing the light source with the LED light emitting module. It is possible to provide useful devices that can reduce the cost of the facility as much as possible to obtain power savings.

1A and 1B are a perspective view and a cross-sectional view schematically showing an LED billboard according to an embodiment of the present invention.
2 is a cross-sectional view showing a portion of an LED billboard according to an embodiment of the present invention.
Figure 3a and Figure 3b is a front view showing another installation example of the shade removing cover according to the present invention.
4 and 5a and 6 is a schematic view showing a connecting member according to an embodiment of the present invention.
Figure 5b is a schematic cross-sectional view showing an LED bar formed with an insulating material layer according to the present invention.
7A-7C are schematic diagrams illustrating a portion of a light guide plate assembly according to another embodiment of the present invention.
8 is a schematic view showing various forms of intaglio formed on the rear surface of the light guide plate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings illustrate only the contents and scope of technology of the present invention, and the technical scope of the present invention is not limited thereto. In addition, it will be apparent to those skilled in the art that various modifications and changes can be made within the scope of the present invention based on these examples.

LED billboard having a plurality of light guide plate connection structure according to the present invention, as shown in Figure 1a and 1b, the advertising housing (2) consisting of a cover 21 and the main body 22, and is installed inside the advertising housing It comprises a light emitting means (3) and a sheet of paper (6) printed with a pattern attached to the cover of the advertising housing.

The advertising housing 2 may be installed in various forms, such as a form in which only one side is fixed to the building and protrudes, or the body is attached to the wall of the building. In particular, the shape of attaching the main body to the building wall surface is relatively large size is used because the attachment surface is wide. When installed on the building wall as described above, the main body is firmly coupled to the building wall through the coupling means, and the cover is provided in a structure that is easily removable from the main body to facilitate the maintenance of the internal LED light emitting module.

In addition, the cover is formed of a light transmissive or semi-transparent material to facilitate light diffusion to facilitate light transmission without exposing the internal facilities.

The light emitting means 3 is composed of a light guide plate assembly 4 for reflecting light incident from the side to the front, and an LED light emitting module 5 for irradiating light to the light guide plate assembly. That is, the light guide plate assembly 4 has a form in which a plurality of small light guide plates 41 having a reflective sheet 415 attached to the rear side thereof are continuously disposed, and the LED light emitting module 5 is installed between the small light guide plates. The light is incident on the side of.

For example, the light emitting means 3 composed of the light guide plate assembly 4 and the LED light emitting module 5 installed inside the advertising housing 2 has a predetermined interval in the lateral direction as shown in FIG. 2. The light guide plate assembly 4 may be disposed to be spaced apart from each other, and a rod-shaped LED lamp 51 (product name T5) may be disposed as the LED light emitting module 5 in the spaced space between the light guide plates.

Here, the LED light 51 is disposed so that the light is emitted only to the front, so that the LED light is directed toward the front, that is, the cover, but the LED light is disposed to be rearward in the thickness direction of the small light guide plate 41 so as to be disposed within the light guide plate. It is preferable to arrange the side surfaces so that the irradiated light is incident on the side of the light guide plate.

Since the LED lamp 51 is directed toward the front, light is directly irradiated onto the cover, so that the illuminance of the LED lamp 51 is increased. Therefore, the shadow removal cover 42 is installed in front of the LED lamp to disperse the light irradiated directly from the LED lamp to provide illumination similar to the light irradiated to the front through the light guide plate.

The shade removing cover 42 may be made of a white translucent material such as PC (polycarbonate) or formed of a transparent translucent material, and may have a structure of applying a sheet or coating of translucent material to the inside or the outside. have. Such a shade removing cover may be provided in various forms such as the center is formed in a curved surface and both sides are formed in a flat shape, or the plate is a flat surface in its entirety. Part of the light is transmitted and part is reflected back to the side of the light guide plate, or a white color film (sheet paper) is attached to the inner surface to transmit part of the light and part is reflected back to the side of the light guide plate, thereby increasing the amount of light incident to the side of the light guide plate. You can.

In the method of coupling the shadow removing cover 42 to the light guide plate, the inner part and both side parts of the light guide plate assembly are different from each other. That is, the shadow removal cover for covering the LED light emitting module 5 positioned in the spaced space inside the light guide plate assembly 4 is to be coupled by interviewing both sides of the front surface of the light guide plate 41 on both sides of the spaced space. The shading removal cover for covering the LED light emitting modules installed on both sides of the light guide plate assembly allows only one side to be interviewed at the edge of the light guide plate and then combined.

In this case, a variety of methods may be applied as the coupling means, and typically, a locking jaw is formed on the surface of the light guide plate or a bond coupling by a synthetic resin, and the shading removal cover is inserted into the locking jaw in the longitudinal direction. Screw coupling may be made by using a combination coupling or a screw directly, in the case of the screw coupling by using a plastic screw 421 of a semi-transmissive material by shading is reduced by light transmittance due to the use of a metal material Can be prevented from occurring.

In addition, as shown in FIG. 3A, an edge of the shade removing cover 42 is formed with a hook 422 having a bloated shape (a shape in which a lower circular through hole of a large diameter is connected to an upper straight through hole of a relatively small width). On the edge of the light guide plate 41, a locking screw 423 may be installed at a position and an interval corresponding to the locking hole on the surface where the shadow removal cover is placed. In this way, if the locking hole 422 and the locking screw 423 are provided, the shadow removal cover is inserted into the locking screw by passing the head of the locking screw to the lower portion of the locking hole, and the body of the locking screw is lowered by lowering the shadow removal cover to the lower portion. Fastening can be made by a locking method to be inserted so as to be located on the upper portion of the latch. The shape can be made easy to maintain the shade removal cover is easily removable.

In addition, as shown in FIG. 3B, the shadow removing cover 42 made of a PC made of a transparent material is installed at both sides thereof in contact with the light guide plate. Accordingly, in order to remove the shadow by the LED light emitting module, both sides of the shadow removing cover allow the light reflected through the light guide plate to be directly transmitted, and the curved portion of the center attaches a semi-transmissive white film 424 to the inside thereof so that the LED light emitting module In order to lower the transmittance of light emitted from the both sides of the shade removal cover and the central curved portion is to have the same or similar roughness.

As another example of the coupling method of the light emitting means 3 as shown in FIG. 4, the light guide plate assembly 4 may be formed as a light guide plate having a large size by connecting a plurality of small light guide plates 41 to the side using the connection member 43. Can be.

The connecting member 43 has upper and lower horizontal bars 431 and 433 positioned at the front and rear of the light guide plate and vertical bars 432 connecting the central portions of the two horizontal bars to be integrally or partially separated to form openings at both sides. It is formed of a bar having a cross section of “工” or H shape, and may be formed of aluminum or PC material, and the openings formed at both sides may be partially inserted by inserting the side surface of the light guide plate, and firmly using a screw. Can be combined.

In addition, the LED bar 52 having a plurality of LEDs 522 mounted on the PCB 521 is mounted on both sides of the inner vertical bar 432 of the connecting member 43 by the LED light emitting module 41. To be incident on the side.

At this time, the LED bar 52 may be used to mount the LED on each side of the PCB bar in addition to the form in which the LED is mounted only on one surface that is typically sold. When using the LED bar of the LED mounted on both sides, as shown in Figure 5a so that the connection is made only by the horizontal bars (431,433) without the need to form a vertical bar in the connecting member 43 connecting the two light guide plates 41. And, it can be used to fix the LED bar 52 mounted with the LED on both sides therein.

In addition, it is possible to provide two LED bars mounted with LEDs on only one side thereof so that the rear surfaces of the LED bars are attached to each other so that the LED light is emitted on both sides. In this case, the LED bar is formed with an insulating material layer 53 on the back surface as shown in Figure 5b to prevent the conduction between the two LED bar 52, in the previous embodiment between the LED bar and the connection member vertical bar The insulating material layer may be formed on the substrate to prevent the energization.

In addition, as shown in FIG. 6, the connection member 43 may be formed in a separate type. As described above, the connecting member 44 is formed of the upper horizontal bar 431 positioned at the rear of the light guide plate and the vertical bar 432 integrally with the support part 44, and the lower horizontal bar 433 positioned at the front of the light guide plate. ) May be configured as a cover portion 45 of "-" type.

If the separation configuration in this way can be made to replace or repair the LED bar 52 by removing only the cover 45 without the need to remove the light guide plate from the connecting member when replacing or repairing the LED bar after installation.

In addition, the support portion 44 and the cover portion 45 may be further provided with a coupling guide means so that the coupling is performed in the right position at the time of initial mounting or removal after installation during maintenance.

As the coupling guide means, the locking jaw 451 of the cover portion 45 protrudes in a band shape, and the locking groove corresponding to the protruding portion of the locking jaw is formed on both sides of the vertical bar 432 end of the support 44. 441 is formed to be coupled by inserting the vertical bar 432 of the support portion between the two engaging projections 451 of the cover portion to maintain the light irradiation direction of the LED bar as well as the alignment of the support portion and the cover portion. Can be.

In addition, the connecting member 43 is formed of both the support portion 44 and the cover portion 45 made of aluminum, or only the support portion 44 formed of aluminum to facilitate the improvement of bearing capacity and thermal cooling of the LED chip and cover The unit 45 may be formed of a semi-transparent material so that a part of the LED light mounted on the LED bar 52 is irradiated to the front side so that light may be transmitted from the entire surface of the billboard in front of the connection member without shading. have.

Meanwhile, as shown in FIG. 7A, the small light guide plate 41 may be installed to be continuously connected without a connecting member. As shown in the drawing, the light guide plate assembly 4 has a plurality of light guide plates 41 disposed to be in contact with each other, and the installation guides 411 are formed in a strip shape in a longitudinal direction on the side of the light guide plate to be interviewed. On the LED light emitting module 5 to install the LED bar 52.

Wherein the LED bar 52, as described above in the other embodiments, each of the two light guide plates 41 which are brought into contact with each other by using a form in which the two are back-bonded to each other, or in which the LEDs 522 are mounted on both sides of the PCB 521. The incidence of the LED light can be made to the inside of the side.

In addition, in order to firmly fix the LED bar in the mounting groove 411, as shown in Figure 7b the support groove so that the PCB 521 is partially embedded along the surface where the two light guide plates in the width direction of the mounting groove is in contact with each other. 414 may be further formed. That is, the width of the support groove 414 may be formed to be the same or slightly larger than the width of the PCB to be mounted so that the PCB does not flow in the support groove, the installation groove 411 within the width of the support groove It is formed. At this time, the groove depth of the support groove is preferably formed in the range of 1/2 of the thickness of the PCB, the groove depth of the installation groove is formed at least more than the protruding length of the LED from the PCB so that the LED is located in the installation groove. In this way, if the support grooves 414 are further formed on both sides of the installation grooves 411, the edges of the PCB 521 are fitted into the support grooves and thus, the LED bars 52 may be prevented from moving in the installation grooves.

In addition, as shown in FIG. 7C, the installation groove 411 may further include a reflective layer 416 by attaching a translucent material or a reflective sheet to the side of the installation groove located on the front surface of the light guide plate toward the cover. Can be formed. The reflective layer 416 may partially block the light irradiated to the front surface directly from the LED chip of the LED bar to prevent the LED bar is directly exposed to the front surface to form shading. In addition, it is possible to prevent the light emitted from the LED is directly exposed to the front surface by forming a deep depth of the installation groove so that the reflective layer forming surface is formed wide.

The light guide plate assembly 4 continuously connecting the small light guide plate 41 by the above-described various methods may be applied to reflect the light irradiated from the side to the front side. For example, the reflection may be performed by mixing impurities in the light guide plate, and a reflection layer may be formed on the rear surface of the light guide plate to increase reflection efficiency, or by attaching a reflection sheet 415 as shown in the drawing to reflect the entire side light. You can do that.

In addition, an intaglio may be formed on the rear surface of the light guide plate 41 to reflect side incident light to the front surface. As the engraved shape, as shown in FIG. 8, V-shaped (a), U-shaped (b), semicircular (c), rhombus (d), U-shaped (e), irregular embossing (f), etc. It may be formed in the form of a concave line 412 along the light guide plate, or may be formed of a concave groove 413 of the dot form.

As described above, the internal assembly process of the LED billboard 1 having the light guide plate assembly 4 to which the plurality of small light guide plates 41 are connected and the LED light emitting module 5 coupled to the light guide plate assembly will be described.

1A and 1B, the LED billboard 1 according to the embodiment of the present invention is horizontally installed with a plurality of square tubes 221 on the inner surface of the main body 22. A plurality of small light guide plate 41 is placed in contact with each of the tube 221, and at this time, the light guide plate and the inner surface of the main body are spaced apart so that complicated electric wiring is made through spaced spaces, and various control devices and stabilizers are installed. do.

The light guide plate 41 vertically erected to the front of the tube 221 is sequentially arranged to be spaced apart at regular intervals in the lateral direction. At this time, the light guide plate is installed in the upper and lower brackets 222, the light guide plate 41 is inserted into the space between the end engaging jaw and the tube 221 of the bracket 222 to be fixed. The bracket may be formed in a small size to be fixed to each small light guide plate, or may be formed in a long bar shape as shown to fix the plurality of light guide plates to have the same position. In addition, the light guide plate may be coupled to the square tube or the main body by a piece to prevent the light guide plate from moving to the left and right sides.

In the light guide plate assembly 4 in which a plurality of small light guide plates 41 are arranged, spaces between the small light guide plates 41 and both sides of the light guide plate assembly are provided with a rod-shaped LED lamp 51 that is an LED light emitting module 5 so that light irradiated from the LED lights The light guide plate 41 is incident on both sides of the light guide plate 41 so as to be emitted forward from the entire surface of the light guide plate.

At this time, in front of the LED light module 51, which is the LED light emitting module, a shadow-removing cover 42 made of a PC material, which is a semi-transmissive material, is installed to transmit only a part of the light quantity of the LED light to the cover, so that a large amount of light from the LED light is covered on the front cover. It is possible to directly prevent irradiance and luminance difference from adjacent light guide plate 41 to be generated.

In addition, as illustrated in FIGS. 7A and 7B, the plurality of light guide plates 41 may be horizontally or vertically interviewed without installing the shadow removing cover. At this time, the LED bar 52, which is an LED light emitting module, is installed in the band-shaped installation groove 411 formed between the two light guide plates, but the light emitting surface of the LED is installed toward the side of the light guide plate so that light irradiation is performed. In addition, the LED bar 52 is installed so that the PCB portion is inserted into the support groove 414 formed on both sides in the width direction of the installation groove 411 to be fixed in the installation groove.

Next, the front panel is installed to the front of the main body where the light guide plate assembly and the LED light emitting module are installed to close the opened front.

In addition, by attaching a sheet of paper 6 printed with various patterns on the outer surface of the cover 21 to receive the light irradiated from the inside can be emitted to provide an advertising effect at night.

The billboard of the present invention having the structure as described above is to use a light guide plate and LED to provide a beautiful illumination by providing light of uniform illuminance while reducing the power consumption compared to the fluorescent lamp.

In particular, large billboards can reduce the cost of equipment and improve the portability of the LGP by replacing the LGP assembly 4 having a large number of small LGPs 41 having a low unit cost in order to solve the cost increase problem of using the LGPs. It can be used by replacing the internal lighting part while using the housing of the existing billboard as it is.

In addition, the LED light emitting module 5 disposed at the connecting portion of the small light guide plate is covered with a cover of semi-transmissive material so that only the light having the same illuminance as the light guide plate is irradiated to the front, thereby suppressing the occurrence of shadows by the small light guide plate connection part so that the front of the billboard It can provide uniform illuminance and brightness for.

In addition, by using the LED chip, which is a light emitting means of the LED light emitting module, RGB LEDs that can produce various colors in addition to the general monochromatic LED, it is possible to provide light that is changed in real time to various colors by a control program. That is, a method of transmitting light in different colors or color orders by transmitting different signals to each of the LED light emitting modules installed in a plurality, or emitting light in different colors for each LED chip constituting the LED light emitting module may be applied. have.

In addition, the light emitting may be performed in association with the sheet paper attached to the cover. For example, the sheet of paper attached to the cover is printed to be partitioned with a predetermined width so that the partitioned sections can be seen as separate lighting facilities separated from each other, and the internal LED light emitting module is controlled by the controller so that the color changes sequentially from one side. The light irradiation can be made as possible. The method makes it possible to make one billboard be separated into a plurality of sheets by sheet paper, and the billboards separated by a plurality of colors by the color emission of the internal lighting may be linked to each other to provide an effect of color rendering.

1: LED billboard
2: Advertising housing
21: cover 22: the body
221: square tube 222: bracket
3: light emitting means
4: light guide plate assembly
41: light guide plate 42: shadow removal cover
43: connecting member 44: support
45: cover part
411 installation groove 412: intaglio
413: engraved groove 414: support groove
415: reflective sheet 416: reflective layer
421: plastic screw 422: latch
423: locking screw 424: white film
431,433: Horizontal bar 432: Vertical bar
441: locking groove 451: locking jaw
5: LED light emitting module
51: LED light 52: LED bar
53: insulating material layer
521: PCB 522: LED
6: sheet paper

Claims (7)

In the LED billboard using the light guide plate and LED,
An advertising housing 2 composed of a cover 21 and a main body 22; A light guide plate assembly (4) having a plurality of small light guide plates (41) disposed in the advertisement housing but having a reflective sheet (415) attached to the rear thereof, and installed between both side surfaces of the light guide plate assembly and each of the light guide plates, Light emitting means (3) consisting of an LED light emitting module (5) for incident light; And a sheet of paper 6 printed with a pattern attached to the cover of the advertising housing.
The light guide plate assembly 4 is arranged in a plurality of light guide plate 41 to be spaced apart at regular intervals to the side, and the LED light emitting module 5 disposed in the spaced space is composed of a rod-shaped LED lamp 51, In front of the light irradiation direction of the LED light 51, the shadow removal cover 42 made of a translucent material is coupled through the edges of one or both light guide plates to partially transmit light of the LED light irradiated to the front to illuminate adjacent light guide plates. Make it look the same as
The shading removal cover 42 is directly fastened to the light guide plate 41 by using the plastic screw 421, or forms a hook-shaped hook 422 at the edge of the shading removal cover 42 and the light guide plate 41. The LED billboard, characterized in that the locking screw 423 is installed so that the locking screw 423 is fastened by a locking method to insert the locking screw 423 to be positioned upward through the lower portion of the locking hole 422. In the LED billboard using the light guide plate and LED,
An advertising housing 2 composed of a cover 21 and a main body 22; A light guide plate assembly (4) having a plurality of small light guide plates (41) disposed in the advertisement housing but having a reflective sheet (415) attached to the rear thereof, and installed between both side surfaces of the light guide plate assembly and each of the light guide plates, Light emitting means (3) consisting of an LED light emitting module (5) for incident light; And a sheet of paper 6 printed with a pattern attached to the cover of the advertising housing.
The light guide plate assembly 4 is formed by connecting a plurality of small light guide plates 41 to the side by using the connection member 43, and the connection member 43 is disposed on the front and rear horizontal bars 431 and 433 in front and rear of the light guide plate 41. ) And a vertical bar 432 connecting the center portions of the two horizontal bars to form a bar having a cross section in the form of an “industrial” shape having openings at both sides thereof. 421),
On both sides of the inner vertical bar 432 of the connecting member 43, an LED light emitting module is attached to the PCB with a plurality of LED bars 52 mounted on the PCB, so that the LED light is incident on the side of the light guide plate. LED billboard. In the LED billboard using the light guide plate and LED,
An advertising housing 2 composed of a cover 21 and a main body 22; A light guide plate assembly (4) having a plurality of small light guide plates (41) disposed in the advertisement housing but having a reflective sheet (415) attached to the rear thereof, and installed between both side surfaces of the light guide plate assembly and each of the light guide plates, Light emitting means (3) consisting of an LED light emitting module (5) for incident light; And a sheet of paper 6 printed with a pattern attached to the cover of the advertising housing.
The light guide plate assembly 4 has a plurality of light guide plates 41 so that the side surfaces are in contact with each other, and each side of the light guide plate, which is the surface to be interviewed, forms a band-shaped installation groove 411 in the longitudinal direction, and the LED is provided in the installation groove. Insert a plurality of LED bars 52 mounted on the PCB as a light emitting module to inject light into the light guide plate 41, but the LED bars 52 are back-bonded to each other to make light irradiation in both directions. To lose,
LED billboard, characterized in that the side of the light guide plate 41 in the installation groove in the width direction of the two grooves of the light guide plate in the installation groove further formed in the support groove 414 to insert the PCB partly fixed. The method of claim 2,
The connecting member 43 is a "T" shaped support part 44 integrally formed with the upper horizontal bar 431 and the vertical bar 432 located at the rear of the light guide plate 41, and the lower horizontal located at the front of the light guide plate. Separated by the cover portion 45 of the "-" type bar 433,
The cover portion 45 protrudes a single locking jaw 451, and a locking groove 441 corresponding to the locking jaw is formed on both sides of the vertical bar end of the support 44 to form a support portion between the two locking jaws of the cover portion. LED billboard, characterized in that configured to be coupled to the vertical bar. 5. The method of claim 4,
The connecting member 43 may be formed of an aluminum material or the support 44 and the cover 45, or only the support 44 is formed of an aluminum material, and the cover 45 is formed of a translucent material. LED billboard. 6. The method according to any one of claims 2 to 5,
LED billboards, characterized in that the insulating material layer 53 is formed on the back of the LED bar (52). The method according to any one of claims 1 to 5,
LED, characterized in that the back of the light guide plate 41 is formed of the intaglio line 412 or any of the intaglio grooves 413 having any one of the form of V-shaped, U-shaped, semi-circular, rhombus, C-shaped Billboard.

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