JP2000187280A - Screen mounting structure for multi-vision display - Google Patents

Abstract

(57) [Summary] [Problem] To provide a multi-vision display that has a simple configuration, can easily make joint width small and uniform, and can easily adjust joint width at the time of on-site construction. SOLUTION: This is a structure for attaching unit screens 12a to 12c which are horizontally arranged to form a screen surface to a gantry 14. Unit screen 12a-1
2c has a frame member 6 on the upper side. Stand 14
Are attached to the frame members 6 to suspend the unit screens 12a to 12c, respectively. Hanging device 16
a to 16c are provided for adjusting the heights of the left and right ends of the unit screens 12a to 12c suspended on the gantry 14, respectively. Push bolt 11,
11 '.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of image display, and more particularly to a screen mounting structure for a multi-vision display.

[0002]

2. Description of the Related Art
Divide the screen into multiple (partitions) to display a large screen
However, there has been proposed a type in which a required image light is projected from an independent projection unit on each divided screen to display one image as the entire screen. Such a large-screen display is often called a multi-vision display.

In a multi-vision display, a plurality of unit screens are arranged in a plane to form one screen surface as a whole. At least one split screen is formed on each unit screen.

In this type of display, generally, a screen surface is arranged along a vertical direction, and a plurality of observers observe an enlarged projected image formed by rear projection on the screen surface from the front side. The position of the observer's eyes is distributed within a relatively narrow angle range in the vertical cross section,
Within a horizontal cross section, they are distributed over a relatively wide range of angles. For this reason, a lenticular lens sheet having a large number of lenses extending in the vertical direction is generally used as a rear projection screen in order to obtain good emission light over a wide angle in the horizontal direction as compared with the vertical direction. I have.

[0005] In a multi-vision display, a gap called a joint is formed between unit screens. However, as higher image quality is required, the width of the joint is required to be reduced. ing. Regarding joint processing, see, for example,
No. 7555 describes this. However, as the joint width is reduced, uneven joint width becomes more conspicuous,
From the viewpoint of improving image quality, it is important to reduce the joint width while maintaining the uniformity of the joint width. Since a multi-vision display is often assembled by on-site construction, simplification of joint width adjustment at the time of construction is desired.

In order to reduce the occurrence of such joint problems as much as possible, in the above-described multi-vision display, the screen size of a unit screen is required to be gradually increased. In addition, based on the demand for improving the image quality as described above, it has been required to improve the image quality of the display image on the unit screen. In order to meet such demands, a lenticular lens sheet used for a unit screen is required to have a small thickness (for example, 1 mm or less) and a small lens pitch (for example, 1 mm or less). Such a thin lenticular lens sheet for a large area and high image quality is generally made of a synthetic resin and therefore has low self-shape retention. For this reason, a unit screen is configured by attaching and holding at least the upper side of the four sides (upper and lower sides and left and right sides) of the lenticular lens sheet to the frame.

[0007] The lenticular lens sheet made of a synthetic resin as described above expands or contracts due to a change in temperature or humidity. Various measures must be taken to attach the lenticular lens sheet to the frame so that the lenticular lens sheet does not wrinkle due to slack due to such external environment change and the flatness is not impaired and the image quality is not degraded. It is.

On the other hand, in the rear projection type unit screen as described above, light emitted from the projection unit and reaching the periphery (particularly, four corners) of each divided screen is also effectively directed to the observer. In order to improve the brightness uniformity of the entire screen, a Fresnel lens sheet having a circular lens pattern corresponding to each divided screen is often used. The Fresnel lens sheet is generally thicker, heavier and more rigid than the lenticular lens sheet, and is used by being superposed on the lenticular lens sheet.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-vision display which has a simple structure, and which can easily reduce the joint width and make it uniform.

It is a further object of the present invention to provide a multi-vision display capable of easily adjusting the joint width at the time of construction on site.

[0011]

According to the present invention, in order to achieve the above object, a screen surface is formed by arranging a plurality of unit screens to which projection light from at least one projection unit is irradiated. A structure for attaching the unit screen of the multi-vision display to a gantry, wherein the unit screen has a frame member on at least an upper side, and the gantry is locked with the frame member. A suspending tool for suspending and holding the unit screen is attached, and the suspending tool includes a tilt adjusting unit for adjusting a tilt of each of the unit screens suspended on the gantry in the left-right direction, A screen mounting structure for a multi-vision display is provided, further comprising: A structure for mounting the unit screen multi-vision display unit screen projection light from one projection unit is irradiated a plurality of rows to form a screen surface to the frame,
The unit screen has a frame member at least on an upper side portion, and a suspending device that suspends and holds the unit screen by being locked to the frame member is attached to the gantry. The screen mounting structure for a multi-vision display, comprising: a height adjusting means for adjusting a height of an upper left corner and an upper right corner of each of the unit screens suspended from the gantry. , Are provided.

In one embodiment of the present invention as described above,
The tilt adjusting means or the height adjusting means adjusts a tilt of the unit screen with respect to the hanging tool or a height of a left end portion and a right end portion of the unit screen.

In one embodiment of the present invention, the suspenders are provided corresponding to each of the unit screens, and the tilt adjusting means or the height adjusting means is provided for each of the suspenders relative to the gantry. Or the height of the left end and the right end of each of the hanging tools.

In one embodiment of the present invention, the suspending tool uses a channel member, and one edge of the channel member is locked to a frame member on an upper side of the unit screen. The other edge of the channel member is attached to the gantry.

In one aspect of the present invention, the tilt adjusting means or the height adjusting means is provided with a vertical position adjusting means which is arranged at an appropriate distance from each other in the horizontal direction corresponding to each of the unit screens. Using at least two push bolts.

In one embodiment of the present invention, the unit screen is formed by arranging a rectangular lenticular lens sheet and a rectangular Fresnel lens sheet in such a manner that each of the four sides is aligned with the vertical and horizontal directions. The Fresnel lens sheet is provided with a Fresnel upper side rib attached to an upper side of the Fresnel lens sheet, and the Fresnel lens side sheet is fixed to the frame member by locking the Fresnel upper side rib. The frame is suspended.

In one embodiment of the present invention, a lenticular upper side rib is attached to an upper side of the lenticular lens sheet, and the lenticular upper side rib is connected to an upper side of the Fresnel lens sheet and / or an upper side of the Fresnel. Locked by ribs.

In one embodiment of the present invention, the Fresnel lens sheet is suspended from the frame by locking the upper Fresnel rib on the upper side of the frame so as to be movable in the left-right direction. I have.

In one embodiment of the present invention, in the unit screen disposed at the left end or the right end, the frame member is also provided at the left side or the right side of the unit screen, respectively. A push bolt for pushing the Fresnel upper side rib to the right or left is attached to the right side of the part or the frame member.

In one aspect of the present invention, at least a part of the unit screen corresponding to the left and right end faces of the lenticular lens sheet and the left and right end faces of the Fresnel lens sheet is connected by an adhesive tape.

In one embodiment of the present invention, the projection light from the projection unit reaches the outside of the corresponding unit screen on the left and right sides of the unit screen opposite to the left and right sides of another adjacent unit screen. A light-shielding plate is provided to block light.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing a first embodiment of a screen mounting structure of a multi-vision display according to the present invention, and FIGS. 2 and 3 are sectional views taken along line AA 'and line BB', respectively. It is sectional drawing. 4 and 5
2 are partially enlarged views of FIG. 1.

In these figures, 12a to 12c are unit screens arranged in the horizontal direction, 14 is a stand on which the unit screens 12a to 12c are mounted, and 16a to 16c are unit The hanging devices 16a to 16c are hanging devices for suspending and holding the screens 12a to 12c, respectively.
4 attached.

The unit screen 12a has the following configuration. That is, in the unit screen 12a, 2 is a lenticular lens sheet, 4 is a Fresnel lens sheet, and 6 is a frame member. The lenticular lens sheet 2 and the Fresnel lens sheet 4 each have a rectangular shape when viewed from the front, and are superimposed on each other such that the lenticular lens sheet 2 is on the observation side. ~ 2
00 inches. The frame member 6 has upper and lower sides and a right side corresponding to the upper and lower sides and the right side of the lenticular lens sheet 2 and the Fresnel lens sheet 4.

The lenticular lens sheet 2 has two sides parallel to each other in the vertical direction (A-A 'line direction) and the other two sides parallel to each other in the horizontal direction (B-B' line direction:
(Left-right direction). In the present invention, the lenticular lens sheet 2 has a plurality of lenses 2 ′ that are arranged side by side on at least one surface so as to extend in the up-down direction and have a thickness of, for example, 3 mm or less, particularly 0.3 to 1.
It is preferable that the width is about 0 mm and the bendability in the left-right direction is higher than that in the up-down direction. The lens arrangement pitch of the lenticular lens sheet 2 is, for example, 0.2 to 1.0.
mm, and particularly preferably 0.2 to 0.5 mm.

The lenticular lens sheet 2 is made of a synthetic resin having a light-transmitting property, and it is easy to form a fine lens shape and has a good optical performance. ) It can be manufactured using an acrylate (MS) resin or the like. By adding rubber, the lenticular lens sheet 2 can also be improved in the lateral flexibility. Examples of the method for producing the lenticular lens sheet 2 include extrusion molding, press molding, cast molding, shaping by light curing, and melt spinning.

On the upper side of the lenticular lens sheet 2, a lenticular upper side rib (reinforcing material) 3 is attached to the surface on the light source (projection unit) side. The rib 3 is made of, for example, a synthetic resin or a flexible synthetic rubber, and is bonded to the sheet surface by bonding, pinning, or the like. The rib 3 may slightly protrude from the lenticular lens sheet surface. The rib 3 has a thickness (that is, a dimension in the normal direction of the sheet surface: CC ′ line direction) of, for example, 3 to 15 mm and a width of, for example, 2 to 10 mm.

The Fresnel lens sheet 4 has two sides parallel to each other in the vertical direction (AA 'line direction) and the other two sides parallel to each other in the horizontal direction (BB' line direction: left and right direction). , And the surface on the light source side is a circular Fresnel lens 4 ′ surface. The Fresnel lens sheet 4 has a thickness of, for example, 2.0 to 10.0 m.
m, it has moderate rigidity.

Like the lenticular lens sheet 2, the Fresnel lens sheet 4 is made of a light-transmitting synthetic resin, and is manufactured by a method such as press molding, cast molding, or shaping by light curing.

On the light source (projection unit) side of the Fresnel lens sheet 4, a Fresnel upper side rib (reinforcing material) 5 is attached to the upper side, and a Fresnel lower side rib 5 'is attached to the lower side. I have. These ribs 5, 5 '
Is made of the same material as the rib 3, and is bonded to the sheet surface by bonding or pinning. The ribs 5 and 5 ′ may slightly protrude from the sheet surface of the Fresnel lens sheet 4. The ribs 5, 5 'have a thickness (ie, C
−C ′ line direction) is, for example, 3 to 15 mm, and the width is, for example, 5 to 20 mm.

The frame member 6 is made of a metal having upper and lower sides and a right side of both the lenticular lens sheet 2 and the Fresnel lens sheet 4, and an inner space S for receiving the ribs 5, 5 'and the ribs 3 attached thereto. And a channel-shaped member made of the same. In this channel-like member,
A mounting member 7 is mounted on the upper side of the frame. The frame member 6 includes these attachment members.

The attachment of the lenticular lens sheet 2 and the Fresnel lens sheet 4 to the frame member 6 is performed, for example, as follows. That is, the Fresnel lens sheet 4 is attached to the frame member 6 by locking the rib 5 to the attachment member 7 on the upper side of the frame member 6 so as to be movable in the left-right direction.
The lower side of the Fresnel lens sheet 4 is a free end. Also, the upper side of the lenticular lens sheet 2 is
The rib 3 is locked on the upper side portion of the Fresnel lens sheet 4 and the rib 5 attached thereto, whereby the attachment to the frame member 6 is performed via the Fresnel lens sheet 4. The upper side rib 3 attached to the lenticular lens sheet 2 may be locked to one of the upper side part of the Fresnel lens sheet 4 and the rib 5.

Then, as shown in FIGS.
In the unit screen 12a, the left side opposite to the right side of another adjacent unit screen 12b blocks the projection light from the projection unit from reaching the corresponding unit screen 12a outside (that is, the adjacent unit screen 12b). Light shielding plate 8 is provided. The light shielding plate 8 is connected (joined) to the left side end surface of the lenticular lens sheet 2 and the left side end surface of the Fresnel lens sheet 4 by an adhesive tape 9. The adhesive tape 9 is joined so as to connect the right side end surface of the lenticular lens sheet 2 and the right side end surface of the Fresnel lens sheet 4. Lenticular lens sheet 2 and Fresnel lens sheet 4
Can be fixed using a wire.

As shown in the figure, the frame member 6 is also provided on the right side of the unit screen 12a, and on the right side of the frame member, as shown in FIG.
A push bolt 10 for pushing the Fresnel upper side rib 5 leftward is attached.

Next, the hanging member 16a has the following configuration. That is, the suspending tool 16a is formed by horizontally arranging the channel members in the left-right direction, and the lower edge portion thereof is engaged with the mounting member 7 of the frame member 6 on the upper edge portion of the unit screen 12a. The upper edge of the channel member is attached to the gantry 14.

The hanging member 16a is provided with tilt adjusting means for adjusting the tilt of the unit screen 12a suspended on the gantry 14 in the left-right direction (or adjusting the height of the upper left corner and the upper right corner of each unit screen). Height adjustment means) for adjusting the vertical position, which is arranged at an appropriate distance from each other in the horizontal direction.
It has two push bolts 11, 11 '. These push bolts 11 and 11 ′ can be operated independently of each other, and the vertical position of the channel member 16 a with respect to the gantry 14 at each bolt position can be set. Thereby, the heights of the upper left corner and the upper right corner of the unit screen 12a can be independently adjusted, the joint arrangement on the left and right can be made equal (equal), and the inclination and the inclination of the unit screen 12a with respect to the left and right direction can be adjusted. Unit screen 1
The vertical position of 2a can be set, and the joint width can be made uniform.

The unit screen 12a, the suspender 16a, and the suspension of the unit screen 12a to the gantry 14 by the suspender 16a have been described above. The same applies to the suspension of the unit screen 12c to the gantry 14 by 16c, except that the left and right directions are reversed.

In the unit screen 12b, the frame member 6 does not exist on both the left and right sides, and the frame member 6 on the lower side is fixed to the gantry 14. Further, a push bolt for pushing the upper rib on the Fresnel sideways is not attached. Except for these points, the unit screen 12
b is the same as that of the unit screens 12a and 12c.

In this embodiment, each unit screen 12
One divided screen is formed in each of a, 12b, and 12c. That is, each unit screen 12a, 12b, 12
c is irradiated with light from the corresponding projection unit.

The unit screen 12a in the present embodiment
The adjustment between the items 12c to 12c can be performed as follows. That is, first, the center unit screen 12b is attached to the gantry 14 by the suspending tool 16b, and the push bolt 1
By operating 1, 11 ', the vertical position of the unit screen 12b and the inclination with respect to the horizontal direction are set as desired (normally, the lenticular lens 2' is set so as to face the vertical direction). Next, the left and right unit screens 12a and 12a
c by the suspenders 16a and 16c, respectively.
And operating the push bolts 11 and 11 ′ to set the vertical position and the inclination with respect to the horizontal direction of the unit screen 12 b as desired (normally, the lenticular lens 2 ′).
Face up and down and the center unit screen 1
2b is set to match the vertical position). Thereby, the width of the gap (joint) between the left and right unit screens 12a and 12c and the central unit screen 12b becomes substantially uniform in the upper and lower directions. Next, the left and right unit screens 12
By operating the push bolts 10a and 12c, the Fresnel lens sheet 4 and the lenticular lens sheet 2 are moved toward the center unit screen 12b with respect to the frame 6 in each unit screen 12a and 12c. Thereby, the joint width can be made sufficiently small (for example, 1 mm
Below).

In this embodiment, the unit screens 12a,
The screen surface is formed by arranging 12b and 12c in the horizontal direction instead of the vertical direction. The reason is as follows. That is, in each unit screen, since the lenticular lens sheet 2 is arranged so that the lens 2 ′ is oriented in the up-down direction, the light diffusion in the up-down direction is smaller than the light diffusion in the left-right direction (horizontal direction). For this reason, when the unit screens are connected in the vertical direction and when the unit screens are connected in the horizontal direction, when the joint width is the same,
From the viewpoint of the observer, the joint width is perceived to be larger in the vertical connection than in the horizontal connection. Therefore, by arranging the unit screens only in the left-right connection while avoiding the vertical connection of the unit screens, the tolerance of the joint width can be increased.

In this embodiment, the difficulty in adjusting the arrangement of the unit screens, which has been a problem in reducing the number of joint screens and reducing the size of the unit screen as much as possible to reduce the number of joints, is solved. This makes it possible to easily adjust the arrangement of the unit screens to make the joint width small and uniform.

FIG. 6 is a front view showing a second embodiment of the screen mounting structure of the multi-vision display according to the present invention. In this figure, members or portions having the same functions as those in FIGS. 1 to 5 are denoted by the same reference numerals. Although the illustration of the gantry is omitted in this figure, the gantry of this embodiment is the same as that of the first embodiment.

In this embodiment, each unit screen 12a,
The configurations of 12b and 12c are different from those of the first embodiment. In this embodiment, each unit screen 12a, 12
In each of b and 12c, three divided screens are formed. That is, the Fresnel lens sheet 4 of each of the unit screens 12a, 12b, and 12c is divided into an upper part, a middle part, and a lower part, and a circular Fresnel lens 4 'is provided in each of the upper part, the middle part, and the lower part. Is formed. The lenticular lens sheet 2 is uniformly formed over the upper, middle, and lower sections of each unit screen. Then, light irradiation is performed from the projection units respectively corresponding to the respective circular Fresnel lenses 4 '.

The screen mounting structure of this embodiment is as follows.
It is the same as that of the first embodiment, and has the same functions and effects.

FIG. 7 is a partial sectional view showing a third embodiment of the screen mounting structure of the multi-vision display according to the present invention. This figure shows a portion corresponding to the portion shown in FIG. In FIG.
Members or portions having the same functions as those in 6 are denoted by the same reference numerals.

In this embodiment, a plurality of unit screens 1
An integral hanging tool 16 having a length corresponding to the total length of the two horizontal arrays is used. And each unit screen 1
Each of the two push bolts 11, 11 'for vertical position adjustment, which are arranged at an appropriate distance in the left-right direction, as tilt adjusting means (or height adjusting means).
(Not shown in FIG. 7) is provided on the lower edge of the suspension 16. These push bolts 11, 11 '
Are in contact with the frame member 6 of the unit screen 12 from below, and can be operated independently of each other. Thereby, similarly to the first embodiment and the second embodiment, the height of the upper left corner and the upper right corner of each unit screen 12 can be adjusted independently, and the horizontal direction of the unit screen 12 can be adjusted. And the vertical position of the unit screen 12 can be set.

The present embodiment also has the same functions, functions and effects as those of the first and second embodiments.

[0050]

As described above, according to the screen mounting structure for a multi-vision display of the present invention, the gantry is attached to the suspender which suspends and holds the unit screen by being locked to the frame member of the unit screen. By having a height adjusting means for adjusting the height of the upper left corner and the upper right corner of each unit screen and an inclination adjusting means for adjusting the inclination of each unit screen suspended in the horizontal direction, With a simple configuration, it is easy to make the joint width small and uniform, and it is possible to easily adjust the joint width at the time of on-site construction.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of a screen mounting structure of a multi-vision display according to the present invention.

FIG. 2 is a sectional view taken along line A-A 'of FIG.

FIG. 3 is a sectional view taken along line B-B 'of FIG.

FIG. 4 is a partially enlarged view of FIG. 1;

FIG. 5 is a partially enlarged view of FIG. 1;

FIG. 6 is a front view showing a second embodiment of the screen mounting structure of the multi-vision display according to the present invention.

FIG. 7 is a partial sectional view showing a third embodiment of the screen mounting structure of the multi-vision display according to the present invention.

[Explanation of symbols]

 2 Lenticular lens sheet 2 'Lenticular lens 3 Lenticular upper side rib 4 Fresnel lens sheet 4' Circular Fresnel lens 5 Fresnel upper side rib 5 'Fresnel lower side rib 6 Frame member 7 Mounting member 8 Light shielding plate 9 Adhesive tape 10 Push bolt 11, 11 'push bolt 12, 12a to 12c unit screen 14 gantry 16, 16a to 16c hanging tool S space

Claims (12)

[Claims] 1. A structure for mounting a unit screen of a multi-vision display forming a screen surface by arranging a plurality of unit screens to be irradiated with projection light from at least one projection unit on a gantry, The unit screen has a frame member at least on an upper side portion, and a suspending device that suspends and holds the unit screen by being locked to the frame member is attached to the gantry. A screen mounting structure for a multi-vision display, characterized in that the tool comprises tilt adjusting means for adjusting the tilt of each of the unit screens suspended on the gantry in the left-right direction. 2. A structure for mounting a unit screen of a multi-vision display forming a screen surface by arranging a plurality of unit screens to be irradiated with projection light from at least one projection unit on a gantry, The unit screen has a frame member at least on an upper side portion, and a suspending device that suspends and holds the unit screen by being locked to the frame member is attached to the gantry. The screen mounting structure for a multi-vision display, comprising: a height adjusting means for adjusting a height of an upper left corner and an upper right corner of each of the unit screens suspended from the gantry. . 3. The apparatus according to claim 2, wherein the inclination adjusting means or the height adjusting means adjusts an inclination of the unit screen with respect to the hanging tool or a height of a left end portion and a right end portion of the unit screen. A screen mounting structure for a multi-vision display according to any one of claims 1 to 2. 4. The hanging tool is provided corresponding to each of the unit screens, and the tilt adjusting means or the height adjusting means is provided for each of the tilting of the hanging tool with respect to the gantry or the hanging. The screen mounting structure for a multi-vision display according to any one of claims 1 to 3, wherein a height of each of a left end portion and a right end portion of the tool is adjusted. 5. The hanging member is formed by using a channel member, and one edge of the channel member is engaged with a frame member on an upper side of the unit screen, and the other of the channel members is provided. The edge part of is attached to the gantry.
A screen mounting structure for a multi-vision display according to any one of the above. 6. The at least two tilt adjusting means or the height adjusting means are arranged at right and left directions at an appropriate distance from each other for each of the unit screens for adjusting a vertical position. The screen mounting structure for a multi-vision display according to any one of claims 1 to 5, wherein the screen mounting structure is formed by using a push bolt. 7. The unit screen has a superposed structure in which a rectangular lenticular lens sheet and a rectangular Fresnel lens sheet are arranged in such a manner that four sides thereof correspond to the vertical and horizontal directions. A Fresnel upper side rib is attached to an upper side of the Fresnel lens sheet, and the Fresnel lens sheet is suspended from the frame by locking the Fresnel upper side rib to the frame member. The screen mounting structure for a multi-vision display according to claim 1, wherein: 8. A lenticular upper side rib is attached to an upper side of the lenticular lens sheet, and the lenticular upper side rib is engaged with the upper side of the Fresnel lens sheet and / or the upper side of the Fresnel rib. The screen mounting structure for a multi-vision display according to claim 7, wherein: 9. The Fresnel lens sheet is suspended from the frame by locking the upper Fresnel rib on the upper side of the frame so as to be movable in the left-right direction. , Claims 7-8
A screen mounting structure for a multi-vision display according to any one of the above. 10. In the unit screen arranged at the left end or right end of the unit screen, the frame member is also provided at the left side or right side of the unit screen, respectively, and the frame member left side or frame member right side. 10. The multi-vision display screen mounting structure according to claim 9, wherein a push bolt for pressing the upper side rib of the Fresnel rightward or leftward is attached to the rib. 11. The unit screen, wherein at least a part of a corresponding portion between the left and right end surfaces of the lenticular lens sheet and the left and right end surfaces of the Fresnel lens sheet is connected by an adhesive tape. A screen mounting structure for a multi-vision display according to any one of claims 7 to 10. 12. A light-shielding portion for blocking the projection light from the projection unit from reaching the corresponding unit screen on left and right sides of the unit screen opposed to the left and right sides of another unit screen adjacent to the unit screen. The screen mounting structure of a multi-vision display according to any one of claims 1 to 11, wherein a plate is provided.