KR101178275B1 - Screen apparatus of display wall - Google Patents

Abstract

PURPOSE: A screen device of a display wall is provided to steadily produce an image of high quality by reducing a discontinuity phenomenon of the image due to a gap between screens. CONSTITUTION: A screen device of a display wall comprises a screen. The screen is installed at the front side of a main housing. The screen comprises a plurality of Fresnel lens combination bodies and a circular lenticular lens sheet(3). The plurality of Fresnel lens combination bodies is installed on a plurality of openings formed at the front side of the main housing. The plurality of Fresnel lens combination bodies unites a Fresnel lens sheet with the front side of a screen housing of frame shape. The circular lenticular lens sheet is formed into a planar body of a single structure and is fixed to the main housing. The planar body of the single structure has an area which can be arranged at front side of the plurality of Fresnel lens combination bodies.

Description

Screen device of display wall {SCREEN APPARATUS OF DISPLAY WALL}

The present invention relates to a screen device of a display wall, and more particularly, to a screen device of a display wall capable of stably realizing a high quality image by reducing the phenomenon of disconnection of an image due to a gap between the screen of the display wall and the screen. It is about.

In general, large display devices, which were partially installed and used in a general control center, a general situation room, a control center, and the like, have increased in demand for commercial and advertising purposes.

Although such large display apparatuses are being enlarged in size, commercial display apparatuses are being enlarged, but it is still impossible to manufacture a single display apparatus large enough to enable a large wall display system.

Accordingly, a large wall display system is configured by stacking a plurality of display apparatuses, and displays a part of an image constituting the entire image to be displayed on each display apparatus.

As a cell display device for implementing a large wall display system (hereinafter referred to as a display wall), various display devices such as thin display devices such as LCD and PDP can be used, but for housing and reflection By adjusting the size of the rearview mirror and the like, the size of a single display device can be configured in various ways. Unlike a display device using an LCD or a PDP panel, it is possible to reduce image loss at an interface with another adjacent cell display device. In addition, a method of applying a projection display device that can be configured at a low cost can be widely applied.

FIG. 1 is a schematic view for explaining a general display wall, and as shown therein, the display wall 10 arranges a plurality of projection display devices 11 in a horizontal direction, and a row of projection display devices arranged in this horizontal direction. (11) The upper layer is laminated so as to form a layer.

The projection display device 11 constituting the display wall includes a main housing 11a forming an appearance, a screen 11b mounted at an opening in the front of the main housing 11a, and an optical mounted inside the main housing 11a. A reflecting plate 11d or the like is mounted obliquely inside the engine 11c and the main housing 11a to reflect the projection light emitted from the optical engine 11c toward the screen 11b where the image is formed.

In addition, the display wall 10 forms a whole image to be expressed in close contact with portions of the screen 11b on which the images of the projection display apparatuses 11 are formed.

FIG. 2A is a front view briefly illustrating a state in which an image is output from a general display wall, and FIG. 2B is a schematic side view of the general display wall.

As shown in the enlarged perspective view of Fig. 2A and Fig. 2B, the screen 11b is provided with a Fresnel lens sheet 11b1 for converting the light emitted from the optical engine 11c into parallel light. A lenticular lens sheet 11b2 that enlarges parallel rays passing through the lens sheet 11b1 while maintaining a clear image on a wider screen is provided outside the contact with the Fresnel lens sheet.

In addition, the Fresnel lens sheet (11b1) and the lenticular lens sheet (11b2) is coupled to the front surface of the rectangular screen housing (11b3) is to be installed in the main housing (11a) in a state consisting of one screen unit. .

In addition, adjacent screen housings 11b3 are configured as one display wall by attaching an adhesive tape t to the side portions in contact with each other as shown in the enlarged perspective view of FIG. do.

However, the above-described conventional display wall has a large gap (usually 0.2 mm) between the screen and the screen due to the thickness of the adhesive tape or the adhesive attached between the screen housings 11b3, so that the screen is between the screen as shown in Fig. 2A. Since the disconnection phenomenon of the image occurs, it causes a serious problem that the entire image to be expressed cannot be stably implemented.

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above, and provides a screen device for a display wall which can stably implement high quality images by reducing the phenomenon of disconnection due to a gap between the screen and the screen of the display wall. There is this.

In order to achieve the above object, the screen device of the display wall according to the present invention, the screen device of the display wall having a screen installed in front of the main housing, wherein the screen, a plurality of screens formed in front of the main housing A plurality of Fresnel lens assemblies respectively installed at the openings and having Fresnel lens sheets coupled to the front of the screen housing formed in a frame shape; And a disc lenticular lens sheet, which is formed of a planar body having a single structure having an area that can be disposed in front of the Fresnel lens assembly, and fixed and installed in the main housing.

And, seat mounting frame is disposed, fixed around the front of the main housing; And a plurality of sheet fixing members having one side connected to an edge portion of the disc lenticular lens sheet and the other side installed on the sheet mounting frame to fix the disc lenticular lens sheet.

The seat mounting frame may further include a fixed frame coupled to the main housing, a movable frame installed on the fixed frame so as to be movable in the front and rear directions, and a frame driving member configured to move the movable frame forward and backward. An elastic member is connected to elastically fix the disc lenticular lens sheet, and may include a position adjusting member for adjusting the installation position and tension of the disc lenticular lens sheet in the vertical and horizontal directions by applying an external force. have.

In this case, the fixed frame is formed by connecting the plate-shaped member bent in a cross-sectional shape "┌" structure in the form of a square frame, the movable frame is bent into a "┐" structure so that the cross-sectional shape can be inserted into the fixed frame to be advanced back and forth. The plate member is connected in a rectangular frame shape, it may be formed of a structure provided with a contact protrusion protruding to the inner end of the formed body and the contact protrusions are bent to the outside in close contact with the disc lenticular lens sheet.

In addition, the frame driving member is composed of an adjustment bolt is fastened to the fixed frame to apply a forward or backward force to the connecting protrusion, the position adjustment member is fastened to the fixed frame and the first adjustment bar and the first A driving member including a second adjusting bar connected to the adjusting bar orthogonally to the adjusting bar, and an adjusting nut fastened to the first adjusting bar to rotate in the forward and reverse directions to move the driving member, and the elastic member includes a tension coil spring. A swivel may be connected to the upper and lower hooks of the tension coil spring, and the hooks of the swivel may be caught by the second adjustment bar and the disc lenticular lens sheet.

On the other hand, the Fresnel lens assembly may be fixed to each other by a fastening bolt fastened between the fixing brackets disposed on the inner surface of the housing plate of the screen housing facing each other.

In addition, the Fresnel lens assembly has a horizontal and vertical length of the Fresnel lens sheet larger than the horizontal and vertical length of the screen housing so that a step is formed between the edge surface of the Fresnel lens sheet and the outer surface of the housing plate. The contact pieces may be formed and attached to the housing plate outer surface corresponding to the stepped portion to attach to each other.

According to the screen device of the display wall according to the present invention, as the disc lenticular lens sheet of a single structure having an area that can be disposed on the entire front of the plurality of Fresnel lens assembly is installed, the boundary is minimized to pass through the Fresnel lens sheet Since the parallel rays are enlarged while maintaining a clear image on a wider screen, image breakdown is reduced and image quality can be significantly improved.

In addition, as in the prior art, the Fresnel lens assembly is coupled to each other so that the gap is minimized by using a separate fixing bracket or a contact piece without bonding the Fresnel lens assembly by an adhesive tape method that increases the gap gap between the Fresnel lens assembly. This can further improve the image quality.

1 is a schematic diagram for explaining a general display wall;
2A is a front view briefly illustrating a state in which an image is output in a general display wall;
2B is a schematic side view of a typical display wall;
3A and 3B illustrate an assembled state of a screen device of a display wall according to an embodiment of the present invention;
Figure 4 is an exploded perspective view showing a screen device of the display wall according to an embodiment of the present invention,
5 is a perspective view illustrating main parts of a screen device of a display wall according to an embodiment of the present invention;
Figure 6 is an enlarged perspective view of the main portion of the screen device of the display wall according to an embodiment of the present invention,
7 is a longitudinal cross-sectional view of main parts illustrating a screen device of a display wall according to an embodiment of the present invention;
8 is an enlarged perspective view of a portion A of FIG. 6;
9A and 9B are views for explaining a mounting structure of a Fresnel lens assembly applied to a screen device of a display wall according to an embodiment of the present invention.

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

3A and 3B are views illustrating an assembled state of a screen device of a display wall according to an embodiment of the present invention. FIG. 3A is a front view schematically showing only main parts and FIG. 3B is a schematic side view. Figure 4 is an exploded perspective view showing a screen device of the display wall according to an embodiment of the present invention, Figure 5 is a perspective view of the main part showing a screen device of the display wall according to an embodiment of the present invention, Figure 6 is an embodiment of the present invention It is an enlarged perspective view of the main part of the screen apparatus of the display wall which concerns on an example.

3 to 6, the screen device of the display wall according to an embodiment of the present invention relates to a screen that is installed in front of the main housing (1) forming the overall appearance skeleton of the display wall to form an image, A plurality of Fresnel lens assembly 2 provided in each of the plurality of openings 11 formed in front of the main housing 1, and a disc lenticular lens sheet provided in contact with the plurality of Fresnel lens assembly 2 ( It is composed of 3).

Fresnel lens assembly (2) is provided in the opening 11 of the main housing (1), the screen housing 21 of the rectangular frame form with an opening corresponding to the opening in the center and the screen housing 21 It consists of a Fresnel lens sheet 22 of a planar body structure coupled to the front surface of the.

 Fresnel lens sheet 22 is a typical shape to change the light emitted from the optical engine into parallel light, the concentric shape of the cross-sectional structure is formed in a sawtooth shape.

The disc lenticular lens sheet 3 is formed of a planar body having a single structure having an area that can be disposed on the entire front surface of the plurality of Fresnel lens assemblies 2, and the sheet mounting frame 4 and the sheet fixing member 5 described later. It is fixed to the main housing 1 by).

The disc lenticular lens sheet 3 has a lenticular lens portion having a semi-circular or elliptic cross-sectional structure so that the parallel rays passing through the Fresnel lens sheet 22 can be enlarged while maintaining a clear image on a wider screen. It is formed over the entire surface.

7 is a longitudinal cross-sectional view illustrating main parts of a screen device of a display wall according to an exemplary embodiment of the present invention.

5 to 7, the seat mounting frame 4 is arranged and fixed around the front of the main housing 1, the fixed frame 41, the moving frame 42, and the frame driving member 43 The fixed frame 41 and the movable frame 42 are fixed to each other by the fixing bolt 44 after the assembly position is adjusted by the frame driving member 43.

The fixed frame 41 is a rectangular frame member coupled to the circumference of the main housing 1, and four plate members bent in a cross-sectional shape in a "┌" structure are arranged in a vertical frame and arranged in a vertical frame. do.

6 and 7, the movable frame 42 is installed in the fixed frame 41 so as to be movable in the front-rear direction. The cross-sectional shape of the movable frame 42 is inserted into the fixed frame 41 so as to be moved forward and backward. Four plate members are bent in the vertical and horizontal directions are arranged and connected in a rectangular frame form. In addition, the moving frame 42 has a connection protrusion 422 protruding to the inner end of the body 421 having a cross-sectional shape of the "┐" structure, and is bent outside to be in close contact with the outer edge of the disc lenticular lens sheet 3. The contact protrusion 423 is formed.

In addition, the connection protrusion 422 is formed in a structure in which the fastening nut 422a to which the frame driving member 43 (adjustment bolt), which will be described later, is fastened to an inner end portion of the body 421 and is bent to an inner surface, The close contact part 423 is bent and formed in the substantially "u" shape at the outer end.

 The frame driving member 43 is a member that moves the moving frame 42 back and forth, and is inserted through the fixed frame 41 to apply the forward or backward force to the moving frame 42 to connect the moving frame 42. It is composed of an adjustment bolt fastened to the protrusion 422.

On the other hand, the sheet fixing member 5 is connected to the disc lenticular lens sheet 3, one side is connected to the edge portion and the other side is installed on the fixing frame 41 of the seat mounting frame 4 to fix the disc lenticular lens sheet (3) As a member to be formed, a plurality of members are provided at the edges of the disc lenticular lens sheet 3 at regular intervals.

FIG. 8 is an enlarged perspective view of portion A of FIG. 6, wherein the sheet fixing member 5 is an elastic member 51 connected to elastically fix the disc lenticular lens sheet 3, and the elastic member 51. ) Is provided with a positioning member 52 for applying an external force to adjust the installation position of the disc lenticular lens sheet 3 in the vertical and horizontal directions.

The elastic member 51 is comprised with the usual tension coil spring which has the hook in both sides of a winding-up part.

6 to 8, the position adjusting member 52 includes a first adjusting bar 521a fastened to the fixed frame 41 and a second adjusting bar connected to the first adjusting bar 521a orthogonally. An adjustment nut for fastening to the driving member 521 including the driving member 521 and the first adjusting bar 521a exposed to the upper portion of the fixed frame 41 to move the driving member 521 inward and outward while rotating in the forward and reverse directions; 522, commonly referred to as a butterfly nut).

In addition, a swivel 53 for preventing twist is connected to upper and lower hooks of the tension coil spring. The swivel 53 is a connecting device which is generally installed to prevent twisting at a portion where twist occurs, such as a connection portion of the traction wire, and protrudes up and down by a bearing (not shown) installed inside the body 531. Hanging ring 532 can be selected and applied from the usual swivel freely configured rotation.

Meanwhile, as shown in FIG. 6, the upper hook 532 of the swivel 53 connected to the outer side of the elastic member 51 is connected to the locking hole 521c of the second adjustment bar 521b, and the elastic member ( The lower hook ring 532 of the swivel 523 connected to the inner side of the 51 is installed to catch the disc lenticular lens sheet (3). At this time, a locking hole 31 is formed at an edge of the disc lenticular lens sheet 3 on which the locking ring 532 of the swivel 53 is installed.

9A and 9B are views for explaining a mounting structure of a Fresnel lens assembly applied to a screen device of a display wall according to an embodiment of the present invention.

9A and 9B, the screen device of the display wall according to an embodiment of the present invention is one disc lenticular lens sheet (3) for a plurality of Fresnel lens assembly (2) in order to minimize the distortion of the image At the same time, the gap between the adjacent Fresnel lens assembly 2 is minimized so as to be provided only.

To this end, as shown in Figure 9a, the Fresnel adjacent to each other in a manner of fixing the fixing bracket 212 to the inner surface of the housing plate 211 facing each other constituting the screen housing 21 and fastening the fastening bolts to each other The lens assembly 2 is coupled to each other. In this way, when the adjacent screen housings 21 are coupled to each other, there is no need to insert and attach the adhesive tape between the outer surfaces of the screen housing, thereby reducing the gap as much as the thickness of the adhesive tape, thereby minimizing the gap gap.

In order to minimize the gap between the Fresnel lens assembly 2, the horizontal and vertical lengths of the Fresnel lens sheet 22 are smaller than the horizontal and vertical lengths of the screen housing 21 as shown in FIG. 9B. It is formed a little larger so that the step (d) is formed between the edge surface of the Fresnel lens sheet 22 and the outer surface of the housing plate 211 of the screen housing 21. Then, the contact piece 213 is attached to the outer surface of the housing plate 211 corresponding to the stepped portion formed between the edge surface of the Fresnel lens sheet 22 and the outer surface of the screen housing 21 by using an adhesive such as an instant adhesive. In addition, the contact housing 213 may be configured by combining the screw housings 21 with each other by applying a temporary adhesive again on the outer surface to adhere to each other. At this time, the thickness of the contact piece 213 is formed to be a size slightly smaller than the size of the step (d) formed between the Fresnel lens sheet 22 and the housing plate 211 to fill in this portion during curing of the instant adhesive While forming the gap between the edges of the Fresnel lens sheet 22 is not formed. In addition, the contact piece 213 is made of a material such as polycarbonate (PC) having excellent adhesion when the instant adhesive is applied.

Hereinafter, the operation of the screen device of the display wall according to an embodiment of the present invention.

First, the main housing 1 is manufactured in accordance with the desired display wall size, and the Fresnel lens sheet 22 is coupled to the front of the screen housing 21 at each opening 11 part of the main housing 1. Assemble the lens lens assembly (2).

Then, when the seat mounting frame (4) is installed around the edge of the main housing, the seat fixing member (5) is installed on the seat mounting frame, and then the original lenticular lens sheet (3) is suspended and fixed to complete the assembly.

Looking at the installation process of the disc lenticular lens sheet 3 in more detail, first fixing the first adjustment bar (521a) of the drive member 521 constituting the seat fixing member 5 using the adjustment nut 522. Fasten and fix to the frame 41, connect one end of the elastic member 51 to the outer end of the second adjustment bar (521b), and then replace the other end of the elastic member 51 of the disc lenticular lens sheet (3). Install in such a way that it connects to the edge engaging hole (31). At this time, the elastic member 51 is not directly inserted into the second adjustment bar (521b) and the locking hole 31, but a swivel (53) for preventing the twist is connected, the hook of the swivel 53 532 is inserted into and engaged with the second adjustment bar 521b and the locking hole 31.

On the other hand, the position adjustment or tension adjustment for forming the best image through the original lenticular lens sheet (3) installed as described above will be described in detail below.

When the front and rear position adjustment of the disc lenticular lens sheet (3) is necessary, if the fixed bolt 44 for fixing the fixed frame 41 and the moving frame 42 is removed, and the frame driving member 43 is rotated in the forward direction Since the forward force is applied to the connecting protrusion 422, the moving frame 42 is moved forward. On the contrary, when the frame driving member 43 is rotated in the reverse direction, the forwarding force is applied to the connecting protrusion 422. As it is actuated, the moving frame 42 is moved backwards. When the moving frame 42 moves forward and backward, the adhesion protrusion 423 formed on the outside of the moving frame 42 moves forward and backward to apply a moving force to the disc lenticular lens sheet 3. Through the forward and reverse rotation operation of the frame driving member 43, the front and rear position can be adjusted such that the disc lenticular lens sheet 3 is in close contact with the Fresnel lens sheet 22.

When the tension of the disc lenticular lens sheet 3 is necessary, when the tension of the disc lenticular lens sheet 3 is rotated in the positive direction (the direction in which the tightening force is applied), the first adjustment bar 521a of the driving member 521 is moved outwardly. The first adjustment bar located on the upper and lower sides moves as protruding upward and downward, and the first adjustment bar located on the left and right sides moves protruding in the left and right directions), and the second adjustment bar 521b is also pulled in conjunction. The elastic member 51 connected thereto is pulled to apply a tensile force to the edge portion of the disc lenticular lens sheet 3, so that the tension can be adjusted to be in a taut state.

On the contrary, in the case where the tension of the disc lenticular lens sheet 3 is to be loosened, when the adjusting nut 522 is rotated in the reverse direction, the tension force applied to the edge of the disc lenticular lens sheet 3 is gradually increased by the aforementioned reverse action. Since it is released, the adjustment nut 522 is manipulated so that proper tension is applied through such adjustment.

On the other hand, as described above, when the disc lenticular lens sheet 3 having a single structure having an area that can be disposed on the entire front surface of the plurality of Fresnel lens assemblies 2 is installed, no boundary is generated between the lenticular lenses as in the prior art. Therefore, as shown in FIG. 3A, the parallel rays passing through the Fresnel lens sheet 22 are enlarged while maintaining a clear image on a wider screen, thereby significantly improving image quality.

9A and 9B, when the Fresnel lens assembly 2 is installed, the gap between the Fresnel lens assembly 2 is minimized, thereby minimizing distortion of the image, thereby further improving image quality. Can be.

What has been described above is just one embodiment for implementing the screen device of the display wall according to the present invention, the present invention is not limited to the above-described embodiment, as claimed in the following claims of the present invention Those skilled in the art to which the present invention pertains without departing from the spirit of the present invention will have the technical idea of the present invention to the extent that various changes can be made.

1: Main housing 2: Fresnel lens assembly
21: Screen housing 22: Fresnel lens sheet
3: Disc lenticular lens sheet 31: Jamming hole
4: seat mounting frame 41: fixed frame
42: moving frame 43: frame driving member
44: Fixing bolt 5: Seat fixing member
51: elastic member 52: position adjusting member
521: drive member 522: adjusting nut
53: swivel

Claims (5)

In the screen device of the display wall having a screen installed in front of the main housing,
The screen,
A plurality of Fresnel lens combinations respectively installed at a plurality of openings formed in front of the main housing, and having a Fresnel lens sheet coupled to a front surface of the screen housing formed in a frame shape; And
And a disc lenticular lens sheet formed of a planar body having an area that can be disposed in front of the Fresnel lens assembly, and fixed and installed in the main housing.
The method of claim 1,
A seat mounting frame disposed and fixed around the front circumference of the main housing; And
And a plurality of sheet fixing members having one side connected to an edge portion of the disc lenticular lens sheet and the other side mounted to the seat mounting frame to fix the disc lenticular lens sheet.
The method of claim 2,
The seat mounting frame includes a fixed frame coupled to the main housing, a movable frame installed to move forward and backward on the fixed frame, and a frame driving member for forward and backward moving the movable frame.
The seat fixing member is an elastic member connected to elastically fix the disc lenticular lens sheet, and a position adjusting member for adjusting vertical and horizontal installation positions and tensions of the disc lenticular lens sheet by applying an external force to the elastic member. Screen device of the display wall comprising a.
The method of claim 3,
The fixed frame is formed by connecting the plate-shaped member bent in a cross-sectional shape "┌" structure in the form of a square frame,
The movable frame is plate-shaped member bent in a cross-sectional shape "┐" structure to be inserted into the fixed frame and connected in a rectangular frame form, connected to the protrusion and protruding to the inner end of the formed body is bent to the disc lenticular Is formed in a structure provided with a contact protrusion in close contact with the lens sheet,
The frame driving member is composed of an adjustment bolt which is fastened to the fixed frame to apply a forward or backward force to the connecting protrusion,
The position adjusting member includes a driving member including a first adjusting bar fastened to the fixed frame and a second adjusting bar connected to the first adjusting bar orthogonally to the first adjusting bar, and moving the driving member while being fastened to the first adjusting bar and rotating in a forward and reverse direction. Consists of adjusting nut,
The elastic member is composed of a tension coil spring, a swivel is connected to the upper and lower hooks of the tension coil spring, the hook of the swivel is caught by the second adjustment bar and the disc lenticular lens sheet. A screen device for a display wall.
5. The method according to any one of claims 1 to 4,
The Fresnel lens assembly,
Fixed to each other by fastening bolts fastened between fixing brackets disposed on an inner surface of the housing plate of the screen housing facing each other;
The horizontal and vertical lengths of the Fresnel lens sheet are greater than the horizontal and vertical lengths of the screen housing so that a step is formed between the edge surface of the Fresnel lens sheet and the outer surface of the housing plate. And a contact piece attached to the outer surface of the housing plate to be attached to each other by attaching to each other.

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