KR20230089698A - Block type electric sign capable for withstanding heavy loads - Google Patents

Abstract

The present invention relates to a block-type electronic display board, comprising: a light emitting module assembly including a lower plate, a light emitting substrate disposed on the lower plate, and an upper plate covering the light emitting substrate; and a reinforcing member surrounding the light emitting module assembly, wherein a plurality of light guides are formed on an upper surface of the upper plate to vertically transmit light sources emitted from a plurality of light emitting elements mounted on the light emitting substrate, It is characterized in that a plurality of concentrating parts are formed on the lower surface of the upper plate to collect the light sources emitted from the plurality of light emitting devices in the direction of the plurality of light guides.

Description

Block-type display board capable of withstanding heavy loads {BLOCK TYPE ELECTRIC SIGN CAPABLE FOR WITHSTANDING HEAVY LOADS}

The present invention relates to a block-type electronic signboard, and more particularly, to a block-type electronic signboard capable of withstanding heavy loads and having improved durability.

In general, a light emitting diode (LED) consumes less power and has a longer lifespan, and is known as a more environmentally friendly light source than conventional light sources. Due to these advantages, a variety of lighting devices using light emitting devices have recently been developed, and among them, there is a floor electric signboard installed on a sidewalk or roadway to provide a floor surface for pedestrians or vehicles. Light emitting elements may be installed inside such a floor electric display board to provide a lighting effect.

Conventional floor signboards can be used by arranging a plurality of light emitting blocks in the horizontal or vertical direction. Since these floor signboards are installed on the ground continuously exposed to sunlight, they are resistant to solar rays, geothermal heat generated from the ground, and seasonal changes in winter and summer. When heat is received after installation due to humidity and temperature change, etc., and heated to a certain temperature or higher, the light emitting block swells and becomes convex on the upper side and on both sides, and if the distance between adjacent light emitting blocks is not secured beyond the minimum level, As the light emitting blocks come into close contact with each other, damage may occur or a phenomenon in which the road surface is convex or protrudes upward may be intensified. In this way, when the light emitting block is deformed and the distance between the adjacent light emitting blocks is not maintained and sticks to each other, the road surface of the sidewalk or driveway becomes convex, which can cause damage by tripping a pedestrian or getting caught on the underside of a vehicle, as well as electrical and mechanical damage. also becomes unstable.

In addition, each light emitting block has a light emitting module having a plate-like structure having a plurality of light emitting elements inside. It is bent little by little, and thus the light emitting module installed inside the block is also bent little by little around the central part. When the light emitting block is bent in this way, the road surface of the walking path or driveway becomes convex, and thus damage may occur as a pedestrian trips over or the lower surface of the vehicle gets caught, and the light emitting module becomes electrically and mechanically unstable. In addition, this bending phenomenon may cause a problem in that the light emitting angle of the light emitting device is distorted or the light emitting module is damaged in severe cases, and thus may cause various problems such as significantly lowering the light emitting efficiency compared to the initial installation.

Korean Patent Publication No. 10-2020-0076192 (published on June 29, 2020) Korean Registered Patent Publication No. 10-2066211 (registered on 2020.01.08)

The present invention aims to solve the foregoing and other problems. Another object is to provide a block-type electronic display board having high strength and durability.

Another object is to provide a block-type electronic display board having a light refraction structure and a light guide structure light guide.

Another object is to provide a block-type electronic display board having a waterproof structure.

Another object is to provide a block-type electronic display board capable of displaying various information and improving the visibility of drivers and pedestrians.

According to one aspect of the present invention to achieve the above or other objects, a light emitting module assembly including a lower plate, a light emitting substrate disposed on the lower plate, and an upper plate covering the light emitting substrate; and a reinforcing member surrounding the light emitting module assembly, wherein a plurality of light guides are formed on an upper surface of the upper plate to vertically transmit light sources emitted from a plurality of light emitting elements mounted on the light emitting substrate, It provides a block-type electronic board characterized in that a plurality of light collecting parts are formed on the lower surface of the upper plate to collect the light sources emitted from the plurality of light emitting elements in the direction of the plurality of light guides.

More preferably, the optical waveguide is disposed above the light collecting unit. The cross-sectional shape of the optical waveguide is formed in a circular shape, and one surface of the light collecting part is formed in a convex lens structure.

More preferably, a plurality of pillar forming parts for generating a plurality of pillar structures by injecting a reinforcing material are formed on the lower surface of the upper plate. Each column forming part includes a first opening formed on the upper surface of the upper plate, a first cylindrical portion extending in a vertical direction from the lower surface of the upper plate, a second cylindrical portion extending in a vertical direction from the first cylindrical portion, and an insertion groove formed between the first cylindrical portion and the second cylindrical portion, and a second opening formed at one end of the second cylindrical portion.

More preferably, a plurality of bending prevention members are formed on the upper surface of the upper plate to prevent the twisting of the light emitting module assembly.

A block-type electronic display board according to embodiments of the present invention will be described.

According to at least one of the embodiments of the present invention, by disposing an upper plate having a light refraction structure and a light guide structure on top of a light emitting substrate, the light emitted from a plurality of light emitting devices mounted on the light emitting substrate is collected and directed in a specific direction. , and through this, there is an advantage in that the luminous efficiency of the block-type electronic display board can be improved.

In addition, according to at least one of the embodiments of the present invention, by disposing a plurality of sealing members at the joint parts between the lower plate and the upper plate, it is possible to block external air or moisture from penetrating into the internal space of the block-type sign board. There is an advantage to being

In addition, according to at least one of the embodiments of the present invention, by forming a plurality of pillar structures for distributing heavy loads inside the block-type electronic board, the strength and durability of the block-type electronic board can be effectively improved. .

However, the effects that can be achieved by the block-type display board according to the embodiments of the present invention are not limited to those mentioned above, and other effects not mentioned above are common knowledge in the art to which the present invention belongs from the description below. will be clearly understandable to those who have

1A to 1C are views showing the appearance of a block-type electronic display board according to an embodiment of the present invention;
Figure 2a is a perspective view showing a light emitting module assembly according to an embodiment of the present invention;
Figure 2b is an exploded perspective view of the light emitting module assembly according to an embodiment of the present invention;
3 is a diagram illustrating a shape of a vacuum valve according to an embodiment of the present invention;
4a to 4c are views showing the appearance of a lower plate according to an embodiment of the present invention;
5 is a view showing the appearance of a light emitting substrate according to an embodiment of the present invention;
6a to 6c are views showing the appearance of an upper plate according to an embodiment of the present invention;
7 is a view referenced to explain a light refraction structure and a light guide structure of an upper plate;
8 is a flowchart illustrating a manufacturing process of a block-type electronic display board according to an embodiment of the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted. Hereinafter, in describing the embodiments disclosed in this specification, detailed descriptions of related known technologies will be omitted if it is determined that the gist of the embodiments disclosed in this specification may be obscured. The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are included. It should be understood to include water or substitutes. In addition, since the size of each component or a specific part constituting the component in the accompanying drawings may be modified for convenience and clarity of description, it does not entirely reflect the actual size.

The present invention proposes a block-type electronic display board having high strength and durability. In addition, the present invention proposes a block-type electronic display board having a light refraction structure and a light guide structure. In addition, the present invention proposes a block-type electronic display board having a waterproof structure. In addition, the present invention proposes a block-type electronic display board capable of displaying various information and improving the visibility of drivers and pedestrians.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the drawings.

1A to 1C are views showing the appearance of a block-type electronic display board according to an embodiment of the present invention. That is, Figure 1a is a perspective view of a block-type display board, Figure 1b is a view of the block-type display board viewed from the top, and Figure 1c is a view of the block-type display board viewed from the bottom.

Referring to FIGS. 1A to 1C , a block-type electronic display board 100 according to an embodiment of the present invention may include a reinforcing material 110, a plurality of optical waveguides 120, and a plurality of fastening members 130. there is.

The reinforcing material 110 may be formed to configure the body of the block-type electronic display board 100 . For example, the stiffener 110 may be formed in a rectangular parallelepiped shape, but is not necessarily limited thereto.

The reinforcing member 110 may be formed of a material having high strength to withstand a heavy load applied to the bottom surface of a sidewalk or driveway. In addition, the reinforcing material 110 may be formed of a material capable of being solidified (or hardened) at room temperature. For example, as the reinforcing material 100, ultra-high performance concrete (UHPC) having a compressive strength of 120 MPa or more may be used, but is not necessarily limited thereto.

A plurality of optical waveguides 120 may be formed on an upper surface (or upper surface) of the block-type electronic display board 100 . The plurality of optical waveguides 120 may be arranged in a predetermined pattern (eg, a matrix pattern) on the upper surface of the block-type electronic display board 100 . For example, the plurality of optical waveguides 120 may be arranged in a 16*16 matrix, but is not necessarily limited thereto.

Each light guide 120 may radiate light in a direction perpendicular to the upper surface of the block-type electronic display board 100 . Predetermined information may be displayed through light emitted from the optical waveguide 120 .

The plurality of fastening members 130 may be formed on the lower surface (or lower surface) of the block-type electric display board 100 . The plurality of fastening members 130 may be arranged in a predetermined pattern on the lower surface of the block-type electronic display board 100 . For example, the plurality of fastening members 130 may be arranged in a 3*3 matrix, but is not necessarily limited thereto.

The plurality of fastening members 130 may be used to mount the block-type electronic display board 100 on a floor surface of an installation site or an outer wall of a building. For example, each fastening member 130 may be formed in a nut structure for inserting a bolt, but is not necessarily limited thereto.

On the other hand, although not shown in the drawing, the block-type electronic signboard 100 according to the present invention may include a light emitting module assembly (not shown) surrounded by a reinforcing member 110. A detailed description of the light emitting module assembly will be described later with reference to the drawings.

The block-type electronic signboard 100 having the above configuration can be used to implement various electronic signboards such as floor electric signboards. The electronic display board implemented in this way can be installed on a platform such as a railway, subway, bus stop, etc., and used to guide predetermined information to customers using the corresponding platform. In addition, the electronic display board is installed on the inner or outer wall of the building and can be used for indoor and outdoor interior purposes. On the other hand, in addition to this, the electronic display board can be used for various purposes, such as the use of guiding transfer stations of the subway, the use of guiding the evacuation route of the subway, and the use of guiding the entrance and exit roads of the highway.

Figure 2a is a perspective view showing a light emitting module assembly according to an embodiment of the present invention, Figure 2b is an exploded perspective view of the light emitting module assembly according to an embodiment of the present invention.

2A and 2B, the light emitting module assembly 200 according to an embodiment of the present invention includes a lower plate 210, a light emitting substrate 220, an upper plate 230, a plurality of sealing members (not shown) ) and one or more vacuum valves (not shown).

The lower plate 210 serves to support the light emitting substrate 220 and the upper plate 230 . The lower plate 210 is combined with the upper plate 230 to form the light emitting module assembly 200 . At this time, the lower plate 210 may be formed to be inserted into the inner surface of the upper plate 230 .

The lower plate 210 may be formed in a thin plate shape. The lower plate 210 may be formed of a plastic material, but is not necessarily limited thereto.

A plurality of first openings 211 for passing a plurality of cables may be formed in one area of the lower plate 210 . In addition, a plurality of second openings 212 may be formed in one region of the lower plate 210 to pass through ends of a plurality of pillar molding parts (not shown) formed on the lower surface of the upper plate 230. .

The light emitting substrate 220 serves to radiate light toward the upper plate 230 . The light emitting substrate 220 includes a circuit board 221, a plurality of light emitting elements 222 mounted on the circuit board 221, and a light emitting driver (not shown) for driving the plurality of light emitting elements 222. ) and a pressure sensor (not shown). A plurality of openings 223 may be formed in one region of the light emitting substrate 220 to pass through a plurality of pillar molding parts formed on a lower surface of the upper plate 230 .

The upper plate 230 serves to cover the lower plate 210 and the light emitting substrate 220 . To this end, an inner space for accommodating the lower plate 210 and the light emitting substrate 220 may be formed in one region of the upper plate 230 . The upper plate 230 is combined with the lower plate 210 to form the light emitting module assembly 200 .

The upper plate 230 may be formed in a plate shape having a predetermined thickness. The upper plate 230 may be formed of a transparent plastic material, but is not necessarily limited thereto.

A plurality of light guides 231 may be formed on an upper surface of the upper plate 230 to transmit light emitted from the plurality of light emitting devices 222 in a vertical direction. In addition, in order to improve the efficiency of the optical waveguide 231, light loss may be minimized by inserting plating or a reflective material into the guide outside the waveguide.

A plurality of column forming parts may be formed on the lower surface of the upper plate 230 to create a plurality of column structures distributing heavy loads.

A plurality of sealing members are disposed at the joint between the lower plate 210 and the upper plate 230 to block external air or moisture from entering the inner space of the light emitting module assembly 200 . As the sealing member, an O-ring, an epoxy resin or a urethane resin may be used, but is not necessarily limited thereto.

The vacuum valve may be disposed in one area of the lower plate 210 and serve to connect an external vacuum pump to the light emitting module assembly 200 . In addition, the vacuum valve may be disposed in one area of the lower plate 210 and serve as a passage through which air inside the light emitting module assembly 200 is discharged to the outside. As an example of such a vacuum valve, a one-way valve in which fluid flow occurs in only one direction may be used. For example, as shown in FIG. 3, the one-way valve 240 includes a cylindrical valve body 241, a first flow path 242 disposed above the valve body 241, and the valve body ( 241) may include a second flow path 243 disposed below. Meanwhile, according to an embodiment of the present invention, the vacuum valve may be omitted.

As described above, the light emitting module assembly according to an embodiment of the present invention includes a plurality of light emitting elements mounted on the light emitting substrate by disposing an upper plate having a light refraction structure and a light guide structure on top of the light emitting substrate. It is possible to collect the light irradiated from and guide it in a specific direction, thereby improving the luminous efficiency of the assembly. In addition, the light emitting module assembly may block external air or moisture from penetrating into the internal space of the assembly by disposing a plurality of sealing members at coupling portions between the lower plate and the upper plate. In addition, the light emitting module assembly can improve the strength and durability of the block-type electronic signboard by having a plurality of through-holes for generating a plurality of pillar structures.

4A to 4C are views showing the appearance of a lower plate according to an embodiment of the present invention. That is, FIG. 4A is a view of the lower plate viewed from the top, FIG. 4B is a view of the lower plate viewed from the bottom, and FIG. 4C is a view of the lower plate viewed from the side.

4A to 4C, the lower plate 210 according to an embodiment of the present invention is disposed below the light emitting module assembly 200 and serves to support the light emitting substrate 220 and the upper plate 230. do

The lower plate 210 may be formed in a thin plate shape. The lower plate 210 may be formed of a plastic material, but is not necessarily limited thereto.

A plurality of first openings 211 , a plurality of second openings 212 , and a plurality of fastening members 213 may be formed in the lower plate 210 .

The plurality of first openings 211 may be formed to pass through a plurality of cables (not shown). A plurality of protrusions 214 may be formed in an area adjacent to the plurality of first openings 211 . The plurality of protrusions 214 may extend from the lower surface of the lower plate 210 in a vertical direction.

The plurality of second openings 212 may be formed to pass through ends of the plurality of pillar molding parts formed on the lower surface of the upper plate 230 . The plurality of second openings 212 may be arranged in a predetermined pattern (eg, a matrix pattern) on the lower plate 210 . For example, the plurality of second openings 212 may be arranged in an 8*8 matrix, but is not necessarily limited thereto.

A predetermined stepped portion 215 may be formed in an area adjacent to the second opening 212 . A predetermined sealing member may be disposed on the stepped portion 215 . Meanwhile, although not shown in the drawing, a predetermined stepped portion may be formed in an edge region of the lower plate 210 as well. Similarly, a predetermined sealing member may be disposed in the stepped portion.

The plurality of fastening members 213 may protrude from the lower surface of the lower plate 210 in a vertical direction. Each fastening member 213 may be formed in a nut structure for inserting a bolt, but is not necessarily limited thereto.

The plurality of fastening members 213 may be arranged in a predetermined pattern on the lower surface of the lower plate 210 . For example, the plurality of fastening members 213 may be arranged in a 3*3 matrix, but is not necessarily limited thereto.

5 is a view showing the appearance of a light emitting substrate according to an embodiment of the present invention. That is, FIG. 5(a) is a view of the light emitting substrate viewed from the top, and FIG. 5(b) is a view of the light emitting substrate viewed from the bottom.

Referring to FIG. 5 , a light emitting substrate 220 according to an embodiment of the present invention is disposed between a lower plate 210 and an upper plate 220, and serves to radiate light toward the upper plate 220. carry out

The light emitting substrate 220 includes a circuit board 221, a plurality of light emitting elements 222 mounted on the circuit board 221, and a light emitting driver (not shown) for driving the plurality of light emitting elements 222. ) and a pressure sensor (not shown) mounted on the circuit board 221.

The circuit board 221 provides wires for electrically connecting the light emitting driver and the plurality of light emitting devices 222 to each other. A PCB board or FPCB board may be used as the circuit board 221, but is not necessarily limited thereto.

The plurality of light emitting devices 222 may emit light according to a control command of the light emitting driver. As the light emitting element 222, a chip LED element capable of outputting light of various colors may be used, but is not necessarily limited thereto.

The plurality of light emitting devices 222 may be arranged in a predetermined pattern (eg, a matrix pattern) on the upper surface of the circuit board 221 . For example, the plurality of light emitting devices 222 may be arranged in a 16*16 matrix, but is not necessarily limited thereto.

The light emitting driver may be mounted on the upper or lower surface of the circuit board 221 to drive the plurality of light emitting devices 222 .

The pressure sensor (or vacuum sensor) is mounted on the circuit board 221 and measures the pressure of the internal space of the light emitting module assembly 200, that is, the internal space between the lower plate 210 and the upper plate 230. function can be performed. Meanwhile, according to an embodiment of the present invention, the pressure sensor may be configured to be omitted.

A plurality of openings 223 may be formed in one region of the light emitting substrate 220 to pass through the plurality of pillar molding parts protruding from the lower surface of the upper plate 230 . The plurality of openings 223 may be arranged in a predetermined pattern (eg, a matrix pattern) on the light emitting substrate 220 . For example, the plurality of openings 223 may be arranged in an 8*8 matrix, but is not necessarily limited thereto.

6A to 6C are views showing the appearance of an upper plate according to an embodiment of the present invention. That is, FIG. 6A is a view of the upper plate viewed from the top, FIG. 6B is a view of the upper plate viewed from the bottom, and FIG. 6C is a view of the upper plate viewed from the side.

6A to 6C, the upper plate 230 according to an embodiment of the present invention is disposed on the upper portion of the light emitting module assembly 200 and serves to cover the lower plate 210 and the light emitting substrate 220. do

The upper plate 230 may be formed in a plate shape having a predetermined thickness. The upper plate 230 may be formed of a transparent plastic material, but is not necessarily limited thereto.

A plurality of light guides 231 may be formed on an upper surface of the upper plate 230 to transmit light emitted from the plurality of light emitting devices 222 in a vertical direction. The plurality of light guides 231 may be arranged to be positioned one to one on top of the plurality of light emitting devices 222 . Also, the plurality of optical waveguides 231 may be arranged in a predetermined pattern (eg, a matrix pattern) on the upper surface of the upper plate 230 . For example, the plurality of optical waveguides 231 may be arranged in a 16*16 matrix, but is not necessarily limited thereto. A more detailed description of the structure of the optical waveguide will be described later with reference to the drawings.

A plurality of bending prevention members 232 may be formed on an upper surface of the upper plate 230 to prevent the light emitting module assembly 200 from being twisted. A plurality of bending prevention members 232 may be formed to cross the upper surface of the upper plate 230 in the horizontal and vertical directions. Each bending prevention member 232 may be formed to protrude from the upper surface of the upper plate 230 in a vertical direction. In addition, each bending prevention member 232 may be formed such that its thickness gradually decreases in the vertical direction.

A plurality of first openings 233a for injecting a reinforcing material may be formed on an upper surface of the upper plate 230 . The plurality of first openings 233a may be formed at one end of the plurality of pillar forming parts 233 .

A plurality of pillar forming parts 233 for generating a plurality of pillar structures may be formed on the lower surface of the upper plate 230 . The plurality of pillar forming parts 233 may protrude from the lower surface of the upper plate 230 in a vertical direction. The plurality of pillar forming parts 233 may be arranged in a predetermined pattern on the lower surface of the upper plate 230 .

Each column forming part 233 includes a first opening 233a formed on the upper surface of the upper plate 230, a first cylindrical part 233b extending in a vertical direction from the lower surface of the upper plate 230, the first A second cylindrical portion 233c extending in a vertical direction from the first cylindrical portion 233b, an insertion groove 233d formed between the first cylindrical portion 233b and the second cylindrical portion 233c, and the second cylindrical portion A second opening 233e formed at one end of 233c may be included.

The upper plate 230 may pass through the first and second openings 233a and 233e in a vertical direction. A reinforcing material may be injected through the first and second openings 233a and 233e.

The second cylindrical portion 233c may be formed to have a diameter smaller than that of the first cylindrical portion 233b. The second cylindrical portion 233c may be formed to be inserted into the second opening 212 formed in the lower plate 210 . In this case, the second opening 212 may be formed to have a diameter larger than the diameter of the second cylindrical portion 233c and smaller than the diameter of the first cylindrical portion 233b.

A predetermined sealing member may be disposed in the insertion groove 233d formed between the first cylindrical portion 233b and the second cylindrical portion 233c. The sealing member is disposed at a joint between the upper plate 230 and the lower plate 210 to prevent external air or moisture from penetrating into the inside through the coupling portion.

A plurality of light concentrating units 234 may be formed on a lower surface of the upper plate 230 to refract light emitted from the plurality of light emitting devices 222 and collect them in one place. The plurality of light collecting parts 234 may be arranged to be positioned one to one on top of the plurality of light emitting devices 222 . Also, the plurality of light collecting parts 234 may be arranged in a predetermined pattern (eg, a matrix pattern) on the lower surface of the upper plate 230 . For example, the plurality of light collecting units 234 may be arranged in a 16*16 matrix, but is not necessarily limited thereto.

Each light collecting part 234 may be formed to be recessed from the lower surface of the upper plate 230 to a certain height. Accordingly, the light concentrating part 234 may accommodate at least a portion of the light emitting element 222 . In addition, each light collecting unit 234 may have a bottom surface having a convex lens structure. Accordingly, the light collecting unit 234 may magnify and display the light emitting element 222 through the convex lens structure.

Meanwhile, although not shown in the drawing, a predetermined stepped portion may be formed in an edge region of the upper plate 230 . A predetermined sealing member may be disposed in the stepped portion. The sealing member is disposed at a joint between the upper plate 230 and the lower plate 210 to prevent external air or moisture from penetrating into the inside through the coupling portion.

7 is a view referenced to describe a light refraction structure and a light guide structure of an upper plate. As shown in FIG. 7, a plurality of light guides 231 may be formed on the upper surface of the upper plate 230 to guide light emitted from the plurality of light emitting elements 222 in a vertical direction, A plurality of light collecting units 234 may be formed on the lower surface to collect light emitted from the plurality of light emitting elements 222 into one place.

Each light collecting unit 234 is disposed above the corresponding light emitting element 222 and serves to refract light emitted from the light emitting element 222 and collect it in the direction of the light guide. A lens surface of the light collecting part 234 may be spaced apart from the light emitting element 222 by a predetermined distance.

Each light guide 231 serves to reflect light incident from the light emitting element 222 and/or the concentrator 234 and guide it in a direction perpendicular to the upper surface of the upper plate 230 . The optical waveguide 231 may be formed in a cylindrical shape. The optical waveguide 231 may be formed such that its cross-sectional area gradually decreases as the distance from the upper surface of the upper plate 230 increases. The cross-sectional shape of the optical waveguide 231 may be formed in various shapes such as a circular shape, a triangular shape, and a rectangular shape, and more preferably may be formed in a circular shape.

8 is a flowchart illustrating a manufacturing process of a block-type electronic display board according to an embodiment of the present invention.

Referring to FIG. 8 , a lower plate, a light emitting substrate, an upper plate, and a plurality of sealing members may be provided (S810). Here, the lower plate and the upper plate may be formed through mold injection molding.

A light emitting substrate may be disposed on top of the lower plate, and an upper plate may be disposed on top of the light emitting substrate. A light emitting module assembly may be configured by disposing a plurality of sealing members at coupling portions between the lower plate and the upper plate (S820).

After the assembly and sealing of the light emitting module assembly is completed, a vacuum pump is connected to one end of the vacuum valve installed in one area of the lower plate, and then the air present in the inner space between the lower plate and the upper plate through the vacuum pump. may be discharged to the outside to make the internal space a vacuum state (S830). This is to remove moisture present in the inner space of the light emitting module assembly.

After the internal space of the light emitting module assembly is vacuumed, the pressure in the corresponding internal space may be measured using a pressure sensor mounted on one region of the light emitting substrate (S840). Meanwhile, according to an embodiment of the present invention, steps 830 and 840 described above may be omitted.

When the measurement of the internal pressure of the light emitting module assembly is completed, the light emitting module assembly may be inserted into the mold in an upside down state (S850). Thereafter, a reinforcing material may be injected into the mold (S860). The reinforcing material may be injected in a lower direction of the assembly through a plurality of through holes formed in the light emitting module assembly. A reinforcing material may be filled in the plurality of through holes to form a plurality of pillar structures. Here, the plurality of through holes correspond to a plurality of pillar molding parts formed in the upper plate.

When the injection of the reinforcing material into the mold is completed, the reinforcing material is cured at room temperature and then the mold is removed to obtain a block-type electronic display board (S870). Thereafter, surface treatment may be performed by performing a polishing process or a polishing process on the upper surface of the block-type electronic display board (S880). Through the surface treatment, the surface of the reinforcing material and the optical waveguide can be positioned on the same plane. In addition, the light emitting efficiency of the block-type electronic display board can be improved through the surface treatment.

Meanwhile, although specific embodiments of the present invention have been described above, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the described embodiments, and should be defined by not only the claims described later, but also those equivalent to these claims.

100: block type display board 110: stiffener
120: optical waveguide 130: fastening member
200: light emitting module assembly 210: lower plate
220: light emitting substrate 230: upper plate

Claims (6)

a light emitting module assembly including a lower plate, a light emitting substrate disposed on the lower plate, and an upper plate covering the light emitting substrate; and
Including a reinforcing material surrounding the light emitting module assembly,
A plurality of optical waveguides are formed on an upper surface of the upper plate to vertically transmit light sources emitted from a plurality of light emitting devices mounted on the light emitting substrate,
A block-type electronic board, characterized in that a plurality of light collecting parts are formed on the lower surface of the upper plate to collect the light sources emitted from the plurality of light emitting elements in the direction of the plurality of light guides. According to claim 1,
The block-type electronic board, characterized in that the optical waveguide is disposed above the light collecting part. According to claim 1,
The cross-sectional shape of the optical waveguide is formed in any one of a circular shape, a triangular shape and a quadrangular shape,
A block-type electronic board, characterized in that one surface of the light collecting part is formed in a convex lens structure. According to claim 1,
A block-type electronic signboard, characterized in that a plurality of pillar forming parts for generating a plurality of pillar structures by injecting the reinforcing material are formed on the lower surface of the upper plate. According to claim 4,
Each of the pillar molding parts includes a first opening formed on the upper surface of the upper plate, a first cylindrical part extending in a vertical direction from the lower surface of the upper plate, and a second cylindrical part extending in a vertical direction from the first cylindrical part. , an insertion groove formed between the first cylindrical portion and the second cylindrical portion, and a second opening formed at one end of the second cylindrical portion. According to claim 1,
A block-type electronic signboard, characterized in that a plurality of bending prevention members are formed on the upper surface of the upper plate to prevent the twisting of the light emitting module assembly.

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