JP6633661B2 - CONNECTION DEVICE, DISPLAY DEVICE ASSEMBLY USING THE DEVICE, DISPLAY DEVICE LAYOUT METHOD, AND DISPLAY DEVICE FOLDING METHOD - Google Patents

Description

INDUSTRIAL APPLICABILITY The present invention is advantageous for connecting a plurality of display devices (that is, display devices) that construct a large screen for displaying various contents such as an electronic signboard also referred to as a digital signage. coupling device, display device assembly using the same which can be implemented, about the folding way method of placement method and a display device for a display device.

  In recent years, the walls of multi-purpose buildings, department stores, banks, hotels, amusement facilities, stations, airports, hospitals and museums, etc., have been equipped with electronic signs, also called digital signage, that display various information with images and sounds. Signage systems are widespread.

  Such a digital signage system includes a multi-display device capable of connecting a plurality of thin display devices represented by a liquid crystal display panel or the like, constructing one large screen, and performing various displays such as a stereoscopic image. Has been realized.

  A connecting device configured to rotatably connect a plurality of display devices and a display device assembly using the connecting device are described in, for example, Patent Document 1. In this prior art, the degree of freedom of the use environment and the installation environment such as installation, storage, and wiring of the display panel unit is improved. The plurality of display devices are connected to each other by a hinge so that the angle can be adjusted, and the display devices can be bent at an arbitrary angle.

JP 2010-54643 A

  In the above-described prior art, the display devices are connected by a hinge, and the display devices can be bent at an arbitrary angle. However, since the display devices cannot be folded in parallel like a folding screen, Requires a large occupied space for transportation and storage. In addition, there is a problem that the gap between the display devices cannot be adjusted depending on the bending angle, and the quality of the display effect of the signage content is reduced.

An object of the present invention, the space occupied is reduced, coupling device capable of adjusting the gap between the display device, the display device assembly using the same, to provide a folding Way Method of placement method and a display device for a display device That is.

The present invention relates to a connecting device that is arranged in one direction and connects two adjacent display devices so as to be capable of mountain fold or valley fold. A first hinge shaft that moves in accordance with the rotation operation, a first hinge piece whose one end is rotatably connected to one display device around a predetermined first axis, and one display device whose other end is the other display device. And a second hinge piece rotatably connected around a predetermined second axis, wherein the first hinge axis is formed by connecting the other end of the first hinge piece and the other end of the second hinge piece to each other. A connection device, wherein the connection device is rotatably connected around a predetermined third axis .
Et al is, in the present invention, the one end first hinge piece, and a third hinge piece is pivotally connected about a fourth predetermined axial line, the one end the second hinge piece, fifth predetermined A fourth hinge piece rotatably connected about the axis, and a second hinge shaft connecting the other end of the first hinge piece and one end of the third hinge piece so as to be rotatable about the fourth axis. And a third hinge shaft that connects the other end of the second hinge piece and one end of the fourth hinge piece so as to be rotatable around a fifth axis. The first hinge axis is a third hinge piece. And the other end of the fourth hinge piece are rotatably connected around a third axis.
The present invention enables two display devices arranged adjacent to each other to be rotatable between an unfolded state arranged in one direction and a state in which the display surfaces of the two display devices are at an angle not included in the same plane. A connecting device for connecting the display devices, the connecting device connecting each display device rotatably around a predetermined first axis, wherein the connecting device includes a first hinge piece fixed to one display device and the other. A second hinge piece fixed to the display device, a third hinge piece having one end connected to the first hinge piece so as to be rotatable around a predetermined second axis, and one end being connected to the second hinge piece. A fourth hinge piece rotatably connected about a predetermined third axis, and a first hinge connecting the first hinge piece and one end of the third hinge piece rotatably about the first axis. Connect the shaft and one end of the second hinge piece and the fourth hinge piece to a predetermined axis. And a third hinge shaft for connecting the other end of the third hinge piece and the other end of the fourth hinge piece rotatably about a predetermined axis. The third hinge shaft is a connecting device that moves in accordance with the turning operation of the two display devices.
Further, in the present invention, the connection means includes a movable member provided on each of the rear portions of the display devices so as to be movable in a direction orthogonal to the first axis.
Further, in the present invention, each of the first hinge piece, the second hinge piece, the third hinge piece, and the fourth hinge piece includes a flat portion, and each of the first hinge axis, the second hinge axis, and the third hinge axis is It is characterized in that it is arranged on the outer side in the thickness direction of the plane portion of each hinge piece.
Furthermore, in the present invention, each of the first hinge axis, the second hinge axis, and the third hinge axis is a hinge pin.

The present invention relates to a method for arranging two or more display devices arranged in one direction and connected between two adjacent display devices so as to be capable of mountain fold or valley fold, wherein the display surfaces of the two adjacent display devices are Using a connecting means including a first hinge axis which is set at an angle not included in the same plane, is disposed between the two display apparatuses, and moves in accordance with the rotation operation of the two adjacent display apparatuses; A first hinge piece whose one end is rotatably connected to one display device around a predetermined first axis, and one end is rotatable around a predetermined second axis to the other display device. and a second hinge piece to be coupled to the first hinge axis, the other end portion of the first hinge piece and the other end portion of the second hinge piece to be rotatable about a third axis predetermined A method for arranging display devices, characterized by being connected.
Furthermore, in the present invention, the connecting means includes a third hinge piece whose one end is connected to the first hinge piece so as to be rotatable around a predetermined fourth axis, and an end part which is predetermined to the second hinge piece. A fourth hinge piece rotatably connected about the fifth axis, and a second hinge piece rotatably connected about the fourth axis to the other end of the first hinge piece and one end of the third hinge piece. A hinge axis, and a third hinge axis that connects the other end of the second hinge piece and one end of the fourth hinge piece so as to be rotatable around a fifth axis; The other end of the hinge piece and the other end of the fourth hinge piece are connected so as to be rotatable around a third axis.
The present invention relates to a method of folding two or more display devices which are arranged in one direction and connected between two adjacent display devices so as to be capable of mountain fold or valley fold, wherein the display surfaces of two adjacent display devices are connected to each other. Alternatively, a connecting means including a first hinge shaft that is folded so that the back surfaces of two adjacent display devices are opposed to each other and that is disposed between the two display devices and that moves in accordance with the rotation operation of the two adjacent display devices. A first hinge piece whose one end is connected to one display device so as to be rotatable around a predetermined first axis; and a second hinge device whose one end is connected to the other display device. and a second hinge piece to be pivotally connected about an axis, the first hinge axis, the third axis of the other end portion of the first hinge piece and the other end portion of the second hinge piece, predetermined It is characterized by being rotatably connected around It is a folding method of the display device.
Furthermore, in the present invention, the connecting means includes a third hinge piece whose one end is connected to the first hinge piece so as to be rotatable around a predetermined fourth axis, and an end part which is predetermined to the second hinge piece. A fourth hinge piece rotatably connected about the fifth axis, and a second hinge piece rotatably connected about the fourth axis to the other end of the first hinge piece and one end of the third hinge piece. A hinge axis, and a third hinge axis that connects the other end of the second hinge piece and one end of the fourth hinge piece so as to be rotatable around a fifth axis; The other end of the hinge piece and the other end of the fourth hinge piece are connected so as to be rotatable around a third axis.

  According to another aspect of the present invention, there is provided a display device assembly, wherein the adjacent side portions of the plurality of display devices are connected by the connecting device.

  According to the present invention, the plurality of attachments respectively fixed to the back surface of each display device are connected by the connection means so as to be rotatable around a predetermined axis. The movable member is moved in a direction orthogonal to the predetermined axis in the above, each movable member is rotated around a predetermined axis by hinge means, and the bending angle between each display device is freely set, and a plurality of display devices are provided. Can be folded like a folding screen.

  As a result, the occupied space in the folded state can be reduced, and the storability can be improved. Further, the position of each axis of the hinge means can be individually changed depending on the bending angle of each display device, whereby the gap between each display device can be adjusted so that the display quality of the image is optimal.

  Also, according to the present invention, since the hinge means is configured to include the first to fourth hinge pieces and the first to third hinge pins, each display device can be displayed in a large angle range without interference between the display devices. The relative angles between the devices can be adjusted.

  Further, according to the present invention, by realizing the hinge means by the torsion spring, the sides of the display devices adjacent to each other are always in a state of being elastically pressed by the spring force of the torsion spring. Regardless of the angle, it is possible to prevent the generation of a gap between the display devices.

  Further, according to the present invention, a plurality of display devices are connected by the connection device to form a display device assembly. Such a display device assembly can realize a large screen in the unfolded state, and in the folded state, each display device is folded in an overlapping state. The space occupied during transportation can be reduced, and convenience during storage and transportation can be improved.

It is a perspective view showing connection device 1 of one embodiment of the present invention. It is a top view of the hinge means 10. FIG. 3 is a front view of the hinge means 10 as viewed from below in FIG. 2. It is a top view showing the state where the 3rd and 4th hinge pieces 13 and 14 were opened about the 3rd axis L3. It is a top view showing the state where the 3rd and 4th hinge pieces 13 and 14 were closed about the 3rd axis L3. FIG. 2 is a plan view showing a state in which three display devices 3a to 3c are connected by the connecting device 1 shown in FIG. It is a bottom view showing the state where the 1st-the 3rd display 3a-3c were folded. It is an enlarged bottom view near one connecting device 10a which connects 1st and 2nd display apparatus 3a, 3b. It is an enlarged bottom view near the other connecting device 10b which connects the 2nd and 3rd display devices 3b and 3c. FIG. 5 is a simplified rear view showing a display device assembly 30a in which three display devices 3a to 3c are connected in a horizontal horizontal direction by a connection device 1. FIG. 11 is a simplified rear view showing a display device assembly 30b according to another embodiment of the present invention in which two display devices 3a1 and 3b1 are connected by a connecting device 1. FIG. 14 is a simplified rear view showing a display device assembly 30c according to another embodiment of the present invention. FIG. 14 is a simplified rear view showing a display device assembly 30d according to still another embodiment of the present invention.

(1st Embodiment)
FIG. 1 is a perspective view showing a connecting device 1 according to one embodiment of the present invention. First, in order to explain a basic configuration, a case where two display devices 3a and 3b arranged adjacent to each other are connected will be described. The connection device 1 of the present embodiment includes a plurality of display devices 3a and 3b having display surfaces 2a and 2b capable of displaying images, an unfolded state in which the display devices 3a and 3b are arranged in one direction, and a display device 3a. , 3b are rotatably connected to a folded state in which they are folded alternately. Each of the display devices 3a and 3b is realized by, for example, a thin liquid crystal display device.

  The coupling device 1 includes a plurality of attachment bodies 5a and 5b fixed to the back portions 4a and 4b of two display devices 3a and 3b arranged adjacent to each other, and the back portions 4a and 5b of the display devices 3a and 3b. Connecting means 7 for connecting the mounting members 5a, 5b fixed to the respective 4b to each other so as to be rotatable around at least one of a first axis L1, a second axis L2, and a third axis L3 which are predetermined axes. And is comprised.

  The first to third axes L1, L2, L3 are parallel. Each of the display devices 3a, 3b is installed at a predetermined installation position such that the first to third axes L1, L2, L3 are substantially vertical when connected to each other by the connection device 1.

  The plurality of display devices 3a and 3b constitute a display system, and predetermined positions thereof are, for example, wall surfaces of multipurpose buildings, department stores, banks, hotels, amusement facilities, stations, airports, hospitals, museums, and the like. It is used as an electronic signage system, also called digital signage, which displays information by images and sounds.

  Such an electronic signboard system can connect a plurality of thin display devices typified by a liquid crystal display panel or the like, construct one large screen, and perform various displays such as a stereoscopic image.

The connecting means 7 includes a pair of fixing members 8a, which are fixed to the mounting members 5a, 5b, respectively.
8b and a pair of movable members provided on each of the fixed members 8a and 8b so as to be movable in directions A1 and A2 orthogonal to the axes L1, L2 and L3 on one plane parallel to the display surfaces 2a and 2b, respectively. 9a and 9b, and hinge means 10 for connecting the movable members 9a and 9b so as to be rotatable around respective axes L1, L2 and L3.

  2 is a plan view of the hinge means 10, FIG. 3 is a front view of the hinge means 10 as viewed from below in FIG. 2, and FIG. 4 is a view of the third and fourth hinge pieces 13, 14 along the third axis L3. FIG. 5 is a plan view showing a state where the third and fourth hinge pieces 13 and 14 are closed with respect to the third axis L3.

  The hinge means 10 includes a first hinge piece 11 fixed to one movable member 9a, a second hinge piece 12 fixed to the other movable member 9b, and a first hinge piece 11 at one end. A third hinge piece 13 rotatably connected about the axis L1, a fourth hinge piece 14 one end of which is connected to the second hinge piece 12, a fourth hinge piece 14 rotatably connected about the second axis L2, and a first hinge piece. A first hinge pin 15 for connecting the hinge piece 11 and one end of the third hinge piece 13 so as to be rotatable around the first axis L1, and an end of the second hinge piece 12 and the fourth hinge piece 14; The second hinge pin 16 that is rotatably connected around the second axis L2, and the other end of the third hinge piece 13 and the other end of the fourth hinge piece 14 are turned around the third axis L3. And a third hinge pin 17 to be connected.

  As described above, the hinge means 10 has a three-axis structure, and the hinge pieces 11, 12 at both ends are fixed to the movable members 9a, 9b, and can be slid in the A1, A2 directions perpendicular to the axes L1, L2, L3. The configuration was adopted.

  With this configuration, the bending angle between the display devices 3a and 3b can be freely set within an angle range of 360 degrees, and the plurality of display devices 3a and 3b can be folded like a folding screen. It is possible to adjust the relative angle between the display devices 3a and 3b in a large angle range without interference.

  As a result, the occupied space in the folded state can be reduced, and the storability can be improved. Further, the position of each axis L1, L2, L3 of the hinge means 10 can be individually changed by the bending angle of each display device 3a, 3b, thereby minimizing the gap between each display device 3a, 3b. can do.

  Each movable member 9a, 9b is formed with a guide slot 21 extending linearly in the direction of arrows A1, A2. Each movable member 9a, 9b is moved in the direction of arrows A1, A2 with respect to the fixed members 8a, 8b by a bolt 20 and a nut (not shown) into which the shaft of the bolt 20 is screwed, and at any position. Can be positioned and fixed. The nuts (not shown) are disposed between the fixing members 8a and 8b and the mounting members 5a and 5b, and the movable members 9a and 9b and the fixing members 8a and 8b are fixed by the heads of the bolts 20 and the nuts. 8b, the movable members 9a, 9b are prevented from being displaced with respect to the fixed members 8a, 8b in the directions of the arrows A1, A2, and are fixed at arbitrary positions as described above.

  Each of the movable members 9a and 9b and each of the fixed members 8a and 8b are made of a short material having a substantially concave cross section. The material of each of the movable members 9a and 9b and each of the fixed members 8a and 8b may be made of a lightweight, high-strength, and highly wear-resistant material, for example, an aluminum alloy.

Each of the mounting members 5a and 5b is formed of a rectangular plate-like body that is retracted inward from the back surface portions 4a and 4b of the display devices 3a and 3b, and is parallel to the directions of arrows A1 and A2 in order to increase bending rigidity. A reinforcing portion (not shown) having a convex cross section extending in the longitudinal direction is formed. The material of each of the attachment bodies 5a and 5b may be made of a material that is lightweight, has high strength, and has high wear resistance, for example, an aluminum alloy.

  FIG. 6 is a plan view showing a state where three display devices 3a to 3c are connected by the connecting device 1 shown in FIG. Note that parts corresponding to those in FIG. 1 will be described with the same numerals with suffixes a, b, and c. The three display devices 3a to 3c are rotatably connected to each other by the connecting device 1 described above. That is, in each of the display devices 3a to 3c, when the display surfaces 2a to 2c are viewed from the front, the left side is the one side 3a1, 3b1, 3c1, and the right side is the other side 3a2, 3b2, 3c2. Then, the other side 3a2 of the first display 3a and the one side 3b1 of the second display 3b are connected, and the other side 3b2 of the second display 3b and one side 3c1 of the third display 3c. Are linked.

  The virtual vertical planes B1, B2, and B3 including the normals of the respective display surfaces 2a, 2b, and 2c are located at the center which bisects the display surface 2a of the first display device 3a and the display surface 2b of the second display device 3b. Angles θ1 and θ2 on a virtual horizontal plane with respect to a virtual vertical plane B4 and a central virtual vertical plane B5 that bisects the display surface 2b of the second display device 3b and the display surface 2c of the third display device 3c. , Θ3, θ4.

  By moving the movable members 9a, 9b in the directions of the arrows A1, A2 with respect to the fixed members 8a, 8b, the angles θ1 to θ4 are individually changed, thereby changing the display surfaces 2a, 2b, 2c. The direction facing the viewer can be set to a desired direction, for example, an optimum direction according to the use environment or installation environment such as installation, storage, and wiring.

  FIG. 7 is a bottom view showing a state in which the first to third display devices 3a to 3c are folded, and FIG. 8 shows a vicinity of one connecting device 10a for connecting the first and second display devices 3a and 3b. FIG. 9 is an enlarged bottom view of the vicinity of the other connecting device 10b that connects the second and third display devices 3b and 3c.

  In a state where the above-mentioned first to third display devices 3a to 3c are overlapped and folded in parallel with each other, the movable member 9a provided on the mounting member 5a of the first display device 3a and the mounting member of the second display device 3b. The movable member 9b provided on the 5b is arranged by the one hinge means 10a at a position close to and opposed to the movable member 9b without interfering with each other.

  One hinge means 10a is such that the second hinge pin 17 is disposed inside the first and second hinge pins 15, 16 between the movable members 9a, 9b, and the third and fourth hinge pieces 13, 14 are movable It is retracted into the space between the members 9a and 9b.

  The movable member 9b provided on the attachment 5b of the second display device 3b and the movable member 9c provided on the attachment 5c of the third display device 3c are second and third movable members by the other hinge means 10b. The display devices 3b and 3c are arranged so as to face each other with the display devices 3b and 3c interposed therebetween.

  The other hinge means 10b is arranged such that the first to third hinge pins 15 to 17 are located laterally relative to each of the movable members 9a and 9b, the other side 3b2 of the second display 3b, and one side 3c1 of the third display 3c. (Right side of FIG. 7). In this state, the axes L1 to L3 of the first to third hinge pins 15 to 17 are arranged in parallel on an imaginary plane.

  In the state where the first to third display devices 3a to 3c are overlapped and folded in parallel to each other, the first to third display devices 3a to 3c of the movable members 9a and 9b and the hinge means 10a and 10b are provided. Since the amount of protrusion from the camera can be extremely small, the space occupied during transportation or storage can be reduced, and a display system with excellent handling convenience can be realized.

  Further, the movable members 9a to 9c are moved in the directions of the arrows A1 and A2 with respect to the fixed members 8a to 8c, and the display quality of an image displayed on each of the display surfaces 2a to 2c of each of the display devices 3a to 3c. The gap between the display devices 3a to 3c can be adjusted, for example, so as to eliminate the gap so that the gap does not decrease.

(2nd Embodiment)
In another embodiment of the present invention, the hinge means 10 may be realized by a torsion spring having one end fixed to one movable member 9a and the other end fixed to the other movable member 9b. In this manner, the movable members 9a and 9b are connected to each other by the torsion spring, so that the adjacent sides of the display devices 3a to 3c are elastically pressed by the spring force of the torsion spring. In addition, regardless of the angles θ1 to θ4 between the display devices 3a to 3c, it is possible to always prevent the occurrence of a gap.

(Third embodiment)
In each of the above embodiments, the three-axis hinge means 10 has been described. However, in other embodiments of the present invention, not only the three-axis hinge means but also four or more multi-axis hinge means may be employed. You may. Even in the case where such a configuration is adopted, the same effect as the case where the above-described triaxial hinge means 10 is used can be achieved.

  FIG. 10A is a simplified rear view showing a display device assembly 30a in which three display devices 3a to 3c are connected horizontally in the horizontal direction by the connection device 1 of each of the above-described embodiments, and FIG. FIG. 10 is a simplified rear view showing a display device assembly 30b according to another embodiment of the present invention in which the display devices 3a1 and 3b1 are connected by the connection device 1. Note that parts corresponding to those in the above-described embodiment are denoted by the same reference numerals. In the above-described embodiment, the configuration in which the three display devices 3a to 3c are connected by the connection device 1 at the upper and lower two positions on each side arranged adjacent to each other in the unfolded state has been described. In another embodiment, a display device assembly 30b is realized in which the adjacent sides of the two display devices 3a1 and 3b1 are connected by the connecting device 1 at two locations above and below. Also in such a display device assembly 30b, as in the above-described embodiments, a large screen is realized in the unfolded state, and the occupied space is reduced in the folded state, so that convenience during storage and transportation is improved. Can be improved.

(Fifth embodiment)
FIG. 10C is a simplified rear view showing a display device assembly 30c according to another embodiment of the present invention. In this embodiment, the display devices 30a and 30b of the above-described embodiment are smaller than the display device assemblies 30a and 30b, for example, the display devices 3a2, 3b2, 3c2, and 3d2 of about 20 to 32 types are disposed on adjacent sides. The upper and lower two stages are configured to be connected by the connecting device 1. According to such a display device assembly 30c, in the unfolded state, a horizontally long large screen can be realized, and in the folded state, the occupied space can be reduced to improve convenience during storage and transportation. it can.

(Sixth embodiment)
FIG. 10D is a simplified rear view showing a display device assembly 30d according to still another embodiment of the present invention. In the present embodiment, one side of each of the long sides adjacent to each other of the five display devices 3a3 to 3e3 is connected by the connection device 1 at three locations of both ends in the long side direction and a central portion. Is done. With such a configuration, as in the above-described embodiments, a large screen is realized in the unfolded state, and the occupied space is reduced in the folded state to improve convenience during storage and transportation. can do.

DESCRIPTION OF SYMBOLS 1 Connecting device 2a, 2b, 2c Display surface 3a, 3b, 3c Display device 4a, 4b, 4c Back part 5a, 5b, 5c Mounting body 7 Connecting means 8a, 8b Fixed member 9a, 9b Movable member 10; 10a, 10b Hinge Means 11 First hinge piece 12 Second hinge piece 13 Third hinge piece 14 Fourth hinge piece 15 First hinge pin 16 Second hinge pin 17 Third hinge pin 20 Bolt 21 Guide elongated hole L1 First axis L2 Second axis L3 Third Axis

Claims (11)

A method of arranging two or more display devices that are arranged in one direction and connected between two adjacent display devices so as to be capable of mountain fold or valley fold,
The display surfaces of two adjacent display devices are set at an angle not included in the same plane,
Using a connecting means including a first hinge shaft, which is disposed between the two display devices and moves in accordance with the rotation operation of the two adjacent display devices,
The connecting means,
A first hinge piece whose one end is rotatably connected to one of the display devices about a predetermined first axis;
One end portion includes a second hinge piece rotatably connected to the other display device around a predetermined second axis,
Wherein the first hinge axis, the other end portion of the other end portion of the first hinge piece second hinge piece, characterized in that pivotally connected about a third axis predetermined display How to place the device. The connecting means,
A third hinge piece having one end connected to the first hinge piece so as to be rotatable around a predetermined fourth axis;
A fourth hinge piece having one end connected to the second hinge piece so as to be rotatable around a predetermined fifth axis;
A second hinge shaft for connecting the other end of the first hinge piece and one end of the third hinge piece so as to be rotatable around the fourth axis;
A third hinge shaft that connects the other end of the second hinge piece and one end of the fourth hinge piece so as to be rotatable around the fifth axis;
The said 1st hinge axis | shaft connects the other end part of a 3rd hinge piece, and the other end part of a 4th hinge piece so that rotation is possible about the said 3rd axis, The said 1st hinge is characterized by the above-mentioned. Display device arrangement method. A method of folding two or more display devices, which are arranged in one direction, and connected between two adjacent display devices so as to be capable of mountain fold or valley fold,
Folding such that the display surfaces of the two adjacent display devices or the back surfaces of the two adjacent display devices face each other,
Using a connecting means including a first hinge shaft, which is disposed between the two display devices and moves in accordance with the rotation operation of the two adjacent display devices,
The connecting means,
A first hinge piece whose one end is rotatably connected to one of the display devices about a predetermined first axis;
One end portion includes a second hinge piece rotatably connected to the other display device around a predetermined second axis,
Wherein the first hinge axis, the other end portion of the other end portion of the first hinge piece second hinge piece, characterized in that pivotally connected about a third axis predetermined display How to fold the device. The connecting means,
A third hinge piece having one end connected to the first hinge piece so as to be rotatable around a predetermined fourth axis;
A fourth hinge piece having one end connected to the second hinge piece so as to be rotatable around a predetermined fifth axis;
A second hinge shaft for connecting the other end of the first hinge piece and one end of the third hinge piece so as to be rotatable around the fourth axis;
A third hinge shaft that connects the other end of the second hinge piece and one end of the fourth hinge piece so as to be rotatable around the fifth axis;
The said 1st hinge axis | shaft connects the other end part of a 3rd hinge piece, and the other end part of a 4th hinge piece so that rotation is possible about the said 3rd axis line, The claim 3 characterized by the above-mentioned. Display device folding method. A connecting device that is arranged in one direction and connects two adjacent display devices so as to be capable of mountain fold or valley fold,
A first hinge shaft that is disposed between the two display devices and that moves in accordance with the rotation of the two adjacent display devices;
A first hinge piece whose one end is rotatably connected to one of the display devices about a predetermined first axis;
One end portion includes a second hinge piece rotatably connected to the other display device around a predetermined second axis,
The first hinge shaft connects the other end of the first hinge piece and the other end of the second hinge piece so as to be rotatable around a predetermined third axis. . A third hinge piece having one end connected to the first hinge piece so as to be rotatable around a predetermined fourth axis;
A fourth hinge piece having one end connected to the second hinge piece so as to be rotatable around a predetermined fifth axis;
A second hinge shaft for connecting the other end of the first hinge piece and one end of the third hinge piece so as to be rotatable around the fourth axis;
A third hinge shaft that connects the other end of the second hinge piece and one end of the fourth hinge piece so as to be rotatable around the fifth axis;
The said 1st hinge axis | shaft connects the other end part of a 3rd hinge piece, and the other end part of a 4th hinge piece so that rotation is possible about the said 3rd axis, The said, 5th characterized by the above-mentioned. Coupling device. A connection for rotatably connecting two display devices arranged adjacent to each other to a developed state in which they are arranged in one direction and a state in which the display surfaces of the two display devices are at an angle not included in the same plane. A device,
Connecting means for connecting each display device rotatably about a predetermined first axis,
The connecting means,
A first hinge piece fixed to one display device;
A second hinge piece fixed to the other display device,
A third hinge piece having one end connected to the first hinge piece so as to be rotatable around a predetermined second axis;
A fourth hinge piece having one end connected to the second hinge piece so as to be rotatable around a predetermined third axis;
A first hinge shaft that connects the first hinge piece and one end of the third hinge piece so as to be rotatable around the second axis;
A second hinge shaft connecting the second hinge piece and one end of the fourth hinge piece so as to be rotatable around the third axis;
A third hinge shaft that connects the other end of the third hinge piece and the other end of the fourth hinge piece so as to be rotatable around the first axis;
The coupling device according to claim 2, wherein the third hinge shaft moves in accordance with a rotation operation of the two display devices. It said connecting means, the respective rear portions of the display device, characterized in that it comprises a movable member which is movable in a direction perpendicular to the first axis, the coupling device according to claim 7. Each of the first hinge piece, the second hinge piece, the third hinge piece and the fourth hinge piece includes a flat portion,
The said 1st hinge axis | shaft, the said 2nd hinge axis | shaft, and each said 3rd hinge axis | shaft are arrange | positioned outside the thickness direction of the said flat part of each hinge piece, The Claim 7 or 8 characterized by the above-mentioned. Coupling device. The connecting device according to any one of claims 7 to 9 , wherein each of the first hinge shaft, the second hinge shaft, and the third hinge shaft is a hinge pin.   A display device assembly, characterized in that adjacent ones of a plurality of display devices are connected by the connection device according to any one of claims 5 to 10.

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