KR20160129669A - Rollable display device - Google Patents

Abstract

The disclosed roller-blind display device includes a first and a second body, and a display having an image display surface and a back surface. The first body is provided with a roller on which the display is wound. As the first body is separated from the second body, the display is released from the roller and drawn out from the first body and developed in the longitudinal direction. The support member is in the form of a chain connected so that a plurality of segment links can be pivoted in one direction and a state spreading around a hinge axis perpendicular to the image display surface. The support member is accommodated in a storage portion provided in the first body and is pulled in the longitudinal direction from the first body as the first body is separated from the second body to support the back surface of the display.

Description

[0001] The present invention relates to a rollable display device,

Disclosed is a roller-type display device having a structure in which a flexible display can be housed inside the body or can be deployed outside the body.

BACKGROUND ART Electronic apparatuses such as televisions, monitors, communication terminals, game machines, multimedia apparatuses, portable computers, and photographing apparatuses have a display for displaying image information. Since traditional displays can not bend or fold, the size of the electronic device with the display depends on the size of the display. Therefore, when a large-area display is adopted, the size of the electronic device must be increased accordingly.

As a flexible display capable of being bent in a round shape has been developed, a rollable display device has been proposed in which a display can be wound around a roller and, if necessary, a display can be unfolded from the roller.

On the other hand, in a roller-type display device having such a structure, if a force in a direction perpendicular to the screen of the display developed outside the body is applied, the display can not be maintained in a flat state, and the image displayed on the display may be distorted. Therefore, a supporting structure for supporting the display that is spread out from the body flat is needed.

A support member for supporting the display and a roller-blind display device in which the display can be separated and housed in the body are provided.

A rollable display device in which a display can be flatly supported in a deployed state.

A roller-blind display device according to an aspect of the present invention includes: a first body and a second body; A display having an image display surface and a back surface; A roller rotatably supported on the first body about a rotation axis of the display in the width direction, one end of the display in the longitudinal direction being fixed and the display being wound on the outer periphery thereof; And a supporting member housed in a receiving portion provided in the first body so as to be rotatable in a bent state unidirectionally from a state in which a plurality of segment links are extended around a hinge axis perpendicular to the image display surface, , The display is pulled out from the first body and unfolded in the longitudinal direction as the first body is separated from the second body and the support member is separated from the second body And is pulled in the longitudinal direction from the first body to support the back surface of the display.

The receiving portion may extend in the width direction.

The roller-type display device may further include a sprocket rotatably mounted on the first body to rotate about a rotation axis perpendicular to the image display surface to move the support member.

Wherein the sprocket is adapted to switch the direction of movement of the support member from the width direction to the longitudinal direction when the support member is pulled out of the first body, and to move the support member when the support member is pulled into the first body Direction from the longitudinal direction to the width direction.

The support member can support the widthwise edge of the display.

The segment link may be provided with a rib extending beyond the edge and extending toward the image display surface.

The sprocket is positioned adjacent to an edge of the display, and a plurality of connection members having a first connection portion are provided at an edge of the display, and a second connection portion is connected to the first connection portion .

The first connection portion and the second connection portion may be connected to each other or disconnected when the movement direction of the plurality of segmented links is switched by the sprocket in the longitudinal direction and the width direction.

The first connection portion may have a protrusion shape extending in the width direction, and the second connection portion may have a groove shape into which the first connection portion is inserted.

The distance between the plurality of connecting members may be equal to the distance between the plurality of segmented links.

The spacing between the plurality of connecting members may be such that the plurality of connecting members are aligned in the radial direction of the roller at a plurality of positions in the circumferential direction of the roller when the display is wound on the roller.

The connecting member may have a protrusion and a recess, and the protrusion of the connecting member located on the outer side may be inserted into the concave portion of the connecting member located on the inner side in the radially aligned state. The protrusion includes a resilient arm, and the recess includes a receiving portion receiving the resilient arm, the width of which is smaller than the width of the resilient arm, and a retaining jaw provided at the edge of the opening to receive the resilient arm The resilient arm of the connecting member located outside in the radially aligned state can be inserted into the receiving portion of the connecting member located inside.

Wherein the connecting member is provided with a first magnetic member and a second magnetic member, and the second magnetic member of the connecting member located on the inner side in the radial alignment state and the first magnetic member of the connecting member located on the outer side, Respectively.

Wherein the connecting member is provided with a first opposing portion and a second opposing portion, at least one of the first and second opposing portions is provided with a friction portion, and a second portion of the connecting member located on the inner side in the radially- The first opposing portion of the connecting member located on the outside and the opposing portion may be in contact with each other.

Wherein the connecting member is provided with a first opposing portion and a second opposing portion, a slip preventing member is provided between the plurality of connecting members, and a second opposing portion of the connecting member located on the inner side in the radial alignment state The first opposing portions of the connecting members located on the outside can be brought into contact with each other.

The support member may include first and second support members for supporting both edges in the width direction of the display.

The pivotal directions of the plurality of segmented links of the first and second support members may be opposite to each other.

Wherein the sprocket includes first and second sprockets positioned adjacent to both edges of the display in the width direction and a plurality of connecting members having first connecting portions at both edges of the display are provided, And a second connection part connected to the first connection part may be provided on the plurality of segmented links of the second support member.

When the moving direction of the first and second support members is switched between the longitudinal direction and the width direction by the first and second sprockets, the first connection portion and the second connection portion may be connected to each other or disconnected have.

The spacing between the plurality of connecting members may be such that the plurality of connecting members are aligned in the radial direction of the roller at a plurality of positions in the circumferential direction of the roller when the display is wound on the roller.

Wherein the support member includes first and second support members for supporting a rear surface of the display at positions spaced apart from each other in the width direction of the display, wherein a rotation direction of the plurality of segment links of the first and second support members They can be opposite.

The roller-barrel display device may further include a locking unit for locking the first body with respect to the second body at a plurality of spaced apart positions.

The locking unit may include a blocking member having a blocking position for blocking movement in a receiving direction accommodated in the first body of the supporting member and an allowable permitting position.

In the blocking position, the blocking member may block the segment link positioned in front of the segment link bite in the sprocket from being moved in the receiving direction. When the supporting member is pulled out from the first body, the blocking member can be interfered with the segment link to switch from the blocking position to the permitting position. The locking unit may further include an elastic member for applying an elastic force to the blocking member in a direction of switching to the blocking position.

The locking unit further includes a plurality of locking jaws provided with the sprockets, and the blocking member is hooked on the locking jaws in the blocking position so that the sprocket is rotated in the direction of moving the supporting member in the receiving direction . When the sprocket is rotated in a direction of pulling the support member out of the first body, the blocking member can be interfered with the engagement jaw and can be switched to the permissible position. The locking unit may further include an elastic member for applying an elastic force to the blocking member in a direction of switching to the blocking position.

The other end of the display in the longitudinal direction is fixed to the second body, and one end of the support member can be fixed to the second body.

Wherein the first body includes a pair of first bodies positioned on both sides of the second body in the longitudinal direction, the rollers are each provided on the first body, and one end of the display and the other body And a pair of rollers to which the end portion is fixed, wherein the support member is installed across the pair of first bodies, and a part of the support member can be fixed to the second body.

According to the embodiments of the rollerable display device described above, the display and the support member can be separated and housed in the body. Further, the display developed outside the body can be stably and flatly supported.

1 is a front view of an open state of a roller-type display device according to an embodiment of the present invention.
2 is a front perspective view of one embodiment of the rollerable display device shown in Fig.
3 is a rear view of one embodiment of the roller-ed display device shown in Fig.
4 is a rear perspective view of one embodiment of the rollerable display device shown in Fig.
5 is a front view of a closed state of one embodiment of the rollerable display device shown in Fig.
6 is a front perspective view in a closed state of one embodiment of the rollerable display device shown in Fig.
7 is a rear perspective view of a closed state of one embodiment of the rollerable display device shown in Fig. 1
8 is a perspective view showing an opened state of an embodiment of a structure for housing the display in the first body.
Fig. 9 is a perspective view showing a partially opened state of an embodiment of the structure for housing the display in the first body.
10 is an internal perspective view of a closed state of an embodiment of a structure for housing a display in a first body.
Figure 11 is an exploded perspective view of one embodiment of a rollerable display device employing one embodiment of a support unit.
Fig. 12 is a front view of one embodiment of the roller-ed display device shown in Fig. 11, showing a partially opened state.
Fig. 13 is a front view of an embodiment of the roller-ed display device shown in Fig. 11, showing an open state.
Fig. 14 is a front view of one embodiment of the rollerable display device shown in Fig. 11, showing a closed state.
15 is a view showing a process in which the first and second support members are drawn out from the first body
16 and 17 are front views of an embodiment of the first and second support members.
Fig. 18 is a plan view of one embodiment of the rollerable display device shown in Fig. 11, showing an opened state.
19 is an exploded perspective view showing an embodiment of the connection structure.
20 is a rear perspective view of an embodiment of the connection structure shown in FIG.
21 is a cross-sectional view taken along line C-C 'in Fig.
22 is a view conceptually showing a process of connecting the connecting member and the supporting unit.
23A is a perspective view showing a state in which the display is wound on the roller.
Figs. 23B to 23H are schematic cross-sectional views showing examples of the shapes of the protrusions and the recesses. Fig.
23I is a schematic cross-sectional view of one embodiment of a slip prevention structure using magnetic force.
23J is a schematic cross-sectional view of an embodiment of a slip prevention structure using a frictional force.
23K is a schematic plan view of an embodiment of a slip prevention structure using frictional force.
231 is a schematic plan view of an embodiment of a slip prevention structure using a zip-lock structure.
24 is a perspective view of one embodiment of the rollerable display device.
25A is a front view of one embodiment of the locking unit.
25B is a front view of one embodiment of the locking unit.
26 is a schematic plan view of one embodiment of a rollerable display device.
27 is a rear view of one embodiment of the rollerable display device.
28 is an exploded perspective view showing an embodiment of a structure in which the roller is rotatably supported on the first body.
29 is a sectional view taken along the line EE 'in Fig.
30 is a perspective view showing an example of a connection structure between the rotation support member and the sprocket.
31 is a graph showing the relationship between the development distance of the display, the rotation amount of the roller, and the rotation amount of the rotation support member.
32 is a partial perspective view of one embodiment of the rollerable display device.
33 is a sectional view taken along the line GG 'in Fig.
34 is a schematic plan view of one embodiment of a rollerable display device.
Figure 35 is a schematic plan view of one embodiment of a rollerable display device.

Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. It should be understood, however, that this invention is not intended to be limited to the particular embodiments described herein but includes various modifications, equivalents, and / or alternatives of the embodiments of this document . In connection with the description of the drawings, like reference numerals may be used for similar components.

In this document, the expressions "having," " having, "" comprising," or &Quot;, and does not exclude the presence of additional features.

In this document, the expressions "A or B," "at least one of A or / and B," or "one or more of A and / or B," etc. may include all possible combinations of the listed items . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes (1) at least one A, (2) Or (3) at least one A and at least one B all together.

As used herein, the terms "first," "second," "first," or "second," and the like may denote various components, regardless of their order and / or importance, But is used to distinguish it from other components and does not limit the components. For example, the first user equipment and the second user equipment may represent different user equipment, regardless of order or importance. For example, without departing from the scope of the rights described in this document, the first component can be named as the second component, and similarly the second component can also be named as the first component.

(Or functionally or communicatively) coupled with / to "another component (eg, a second component), or a component (eg, a second component) Quot; connected to ", it is to be understood that any such element may be directly connected to the other element or may be connected through another element (e.g., a third element). On the other hand, when it is mentioned that a component (e.g., a first component) is "directly connected" or "directly connected" to another component (e.g., a second component) It can be understood that there is no other component (e.g., a third component) between other components.

As used herein, the phrase " configured to " (or set) to be "configured according to circumstances may include, for example, having the capacity to, To be designed to, "" adapted to, "" made to, "or" capable of ". The term " configured to (or set up) "may not necessarily mean" specifically designed to "in hardware. Instead, in some situations, the expression "configured to" may mean that the device can "do " with other devices or components. For example, a processor configured (or configured) to perform the phrases "A, B, and C" may be implemented by executing one or more software programs stored in a memory device or a dedicated processor (e.g., an embedded processor) , And a generic-purpose processor (e.g., a CPU or an application processor) capable of performing the corresponding operations.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the other embodiments. The singular expressions may include plural expressions unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art. The general predefined terms used in this document may be interpreted in the same or similar sense as the contextual meanings of the related art and, unless expressly defined in this document, include ideally or excessively formal meanings . In some cases, even the terms defined in this document can not be construed as excluding the embodiments of this document.

The roller-blind display device of this document may be, for example, a TV, a smartphone, a tablet personal computer, a mobile phone, a video phone, an e-book reader, a desktop PC a desktop personal computer, a laptop personal computer, or a netbook computer.

In this document, the term user may refer to a person using a roller-blind display device.

FIGS. 1 to 4 are respectively a front view of the opened state of the rolled-type display device according to an embodiment of the present invention, a front perspective view of the opened state, a rear view of the opened state, and a rear perspective view of the opened state. 5 to 7 are a front view, a front perspective view, and a rear perspective view, respectively, of a closed state of the rollerable display device according to an embodiment of the present invention.

 1 to 7, the roller-block type display device includes a pair of first and second bodies 101 and 201 and a second body 401. The first body 101 (201) is located on both sides of the second body (401). The second body 401 may include a stand 501. The second body 401 may be fixed to the stand 501 and may be integral with the stand 501.

5 to 7, when the first body 101 and the second body 201 are fully opened, that is, in a closed state, the display 301 includes the first body 101 ). In the closed state, the first body 101 and the second body 401 are positioned adjacent to each other, and the display 301 may not be exposed to the outside. The widths of the first and second bodies 101 and 201 and the second body 401 may be the same as the width of the stand 501 in a closed state. In the closed state, the rolled-up display device occupies a minimum space.

1 to 4, the display 301 includes the first body 101 and the second body 201 in a state in which the first body 101 and the second body 201 are separated from the second body 401, And is deployed between the first and second bodies 101 and 201. The open state includes a state in which the display 301 is fully developed and a state in which the display 301 is partially developed.

The roller-blind display device may be a television, a monitor, a communication terminal, a game machine, a multimedia device, a portable computer, a photographing device, and the like. In addition, the rollerable display device may be any device having a structure in which the first body 101 and the second body 401, in which the display 301 is housed, and the second body 401 can be moved toward / away from each other.

The display 301 may have a structure that can be flexibly bent and housed in the first body 101 (201), for example, a structure that can be wound on a roller, and its structure is not particularly limited. For example, the rollerable display 3 may be a liquid crystal display (LCD), a light-emitting diode (LED) display, an organic light-emitting diode (OLED) An electrophoretic display, or the like.

When the first body 101 and the second body 201 move away from the second body 401, the display 301 is housed in the first body 101 (201) 101) (201).

8 to 10 are perspective views showing an embodiment of a structure for housing the display 301 in the first body 101 (201), wherein Fig. 8 is an open state, Fig. 9 is a partially opened state, Show status. In FIGS. 8 to 10, the first body 101 and the second body 201 are shown in a state in which a part of the housing is omitted so that the inside of the body is visible.

8 to 10, rollers 103 and 203 are installed on the first body 101 and the second body 201, respectively. The rollers 103 and 203 extend in the width direction A2 of the display 301 and are provided with the rotation shafts 103a and 203a in the width direction A2 on the first and second bodies 101 and 201, As shown in Fig. One end of the display 301 in the longitudinal direction A1 is connected to the roller 103 and the other end is connected to the roller 203. [ The display 301 is wound around the outer periphery of the rollers 103 and 203. In the closed state, the display 301 is housed in the first body 101 (201) while being wound on the rollers 103 and 203 as shown in Fig.

When the first body 101 and the second body 201 are moved in the longitudinal direction A1 of the display 301 and away from the second body 401 in the state shown in Fig. 10, the display 301 is subjected to a tensile force. The rollers 103 and 203 are rotated in the direction in which the display 301 is released as indicated by reference numerals 191 and 291 in Fig. 9, and the display 301 is drawn out from the first body 101 (201) (101) (201) across the second body (401). When the first body 101 (201) reaches the open state, the display 301 is maximally deployed as shown in Fig.

When the first body 101 and the second body 201 are brought close to the second body 401 in the opened state, the rollers 103 and 203 are rotated in the winding direction of the display 301, Similarly, the display 301 is wrapped around the rollers 103 and 203 and housed inside the first body 101 (201). Elastic force may be applied to the rollers 103 and 203 so as to rotate in a direction in which the display 301 is wound by an elastic member (not shown), for example, a torsion spring. The structure in which the rollers 103 and 203 roll the display 301 is not particularly limited. An embodiment of the structure in which the rollers 103 and 203 wind the display 301 will be described later with reference to Figs.

The display 301 drawn out of the first body 101 (201) needs to be maintained in a flat state. If an external force is applied to the display 301 in a direction perpendicular to the image display surface 301-1 in the unfolded state, the display 301 can not be maintained in the flattened unfolded state and the image displayed on the display 301 is distorted .

Referring to Figs. 1 to 7, the roller-barrel display device has a support unit 6 for supporting the display 301 in a flat manner. The support unit 6 is accommodated in the first body 101 and the second body 101 in the closed state and can be pulled out from the first body 101 and supported in the open state to support the display 301 . The support unit 6 can support the back surface 301-2 of the display 301, that is, the opposite surface of the image display surface 301-1. The support unit 6 can support at least one of the side edges 301a and 301b of the display 301 in the width direction A2. The support unit 6 of the present embodiment may include first and second support members 6-1 and 6-2 that respectively support the edges 301a and 301b of the display 301. [

5 to 7, the first and second supporting members 6-1 and 6-2 are housed in the first body 101 and the second body 201 in a closed state. When the first body 101 and the second body 201 are separated from the second body 401, the first and second support members 6-1 and 6-2, as shown in FIGS. 1 to 4, And is drawn out from the first body 101 (201) together with the first body 301 to be positioned on the rear surface 301-2 side of the display 301 and supports the edges 301a and 301b, respectively.

One embodiment of the support unit 6 will be described below. Figure 11 is an exploded perspective view of one embodiment of a rollerable display device employing one embodiment of the support unit 6. Fig. 12 is a front view of one embodiment of the roller-ed display device shown in Fig. 11, showing a partially opened state. Fig. 13 is a front view of an embodiment of the roller-ed display device shown in Fig. 11, showing an open state. Fig. 14 is a front view of one embodiment of the rollerable display device shown in Fig. 11, showing a closed state. 11 to 14, the first body 101 and the second body 201 are shown in a state in which a part of the housing is omitted so that the inside can be seen.

11 to 14, the support unit 6 includes first and second support members 6-1 and 6-2 for supporting the edges 301a and 301b of the display 301, respectively do. The first and second support members 6-1 and 6-2 are in the form of a chain in which a plurality of segmented links 601 are rotatably connected to each other. The first support member 6-1 has a pair of first chains 603 and 623 housed in the first bodies 101 and 201, respectively. The second support unit 6-2 includes a pair of second chains 605 and 625 housed in the first bodies 101 and 201, respectively. Each of the pair of first chains 603 and 623 and the pair of second chains 605 and 625 is in the form of a chain in which a plurality of segmented links 601 are rotatably connected to each other. The distal links 603a and 605a positioned on the second body 401 side among the segment links 601 of the pair of first chains 603 and 623 and the pair of second chains 605 and 625, (623a) and (625a) are connected to the second body (401). Each of the first and second support members 6-1 and 6-2 includes at least one segmented link such as segmented links 603a, 605a, 623a and 625a located at the center thereof, 401). ≪ / RTI > Embodiments of the first and second support members 6-1 and 6-2 will be described later with reference to Figs. 16 and 17. Fig.

Each of the first bodies 101 and 201 is provided with first and second storage sections for receiving the first and second support members 6-1 and 6-2. For example, the first body 101 is provided with first and second storage units 151 and 152, respectively, in which the first and second chains 603 and 605 are housed. The first and second receiving portions 151 and 152 may be in the form of a groove extending in the width direction A2 of the display 301, for example. The first and second receiving portions 151 and 152 are spaced apart from each other in the longitudinal direction A1. Likewise, the first body 201 is provided with first and second receiving portions 251 and 252 for receiving the first and second chains 623 and 625, respectively. The first and second receiving portions 251 and 252 may be in the form of a groove extending in the width direction A2 of the display 301, for example. The second storage compartments 251 and 252 are spaced apart from each other in the longitudinal direction A1.

The first and second bodies 101 and 201 may be provided with first and second sprockets for drawing in / out the first and second support members 6-1 and 6-2. The first and second sprockets are positioned adjacent to the edges 301a, 301b of the display 301. For example, the first body 101 is provided with first and second sprockets 195 and 196 for feeding the first and second chains 603 and 605, respectively. The first and second chains 603 and 605 are transported in the width direction A2 in the first body 101 by the first and second sprockets 195 and 196, And is transported in the longitudinal direction A1 from the outside. That is, the first and second sprockets 195 and 196 change the direction of conveyance of the first and second chains 603 and 605. To this end, the first and second sprockets 195 and 196 are supported on the first body 101 so as to be rotatable about rotational shafts 195a and 196a perpendicular to the image display surface 301-1 . That is, the rotating shafts 195a and 196a are orthogonal to the longitudinal direction A1 and the transverse direction A2. The first and second sprockets 195 and 196 are spaced apart from each other by a distance 187 in the longitudinal direction A1 so as to correspond to the first and second storage units 151 and 152, respectively. Accordingly, the first and second chains 603 and 605 can be accommodated in the first body 101 while being shifted in the longitudinal direction A1. Since the first and second chains 603 and 605 are not interfered with each other, the length of the first body 101 for accommodating the first and second chains 603 and 605 in the width direction A2 is minimized can do.

Similarly, the first body 201 is provided with first and second sprockets 295 and 296 for feeding the first and second chains 623 and 625, respectively. The first and second chains 623 and 625 are transported in the width direction A2 in the first body 201 by the first and second sprockets 295 and 296, And is transported in the longitudinal direction A1 from the outside. That is, the conveyance directions of the second chains 623 and 625 are switched by the first and second sprockets 295 and 296. To this end, the first and second sprockets 295 and 296 are supported on the first body 201 so as to be rotatable about rotational shafts 295a and 296a perpendicular to the image display surface 301-1 . That is, the rotary shafts 295a and 296a are orthogonal to the longitudinal direction A1 and the transverse direction A2. The first and second sprockets 295 and 296 are spaced apart from each other by a distance 287 in the longitudinal direction A1 so as to correspond to the first and second receiving portions 251 and 252, respectively. Accordingly, the first and second chains 623 and 625 can be accommodated in the first body 201 while being shifted in the longitudinal direction A1. Since the first and second chains 623 and 625 are not interfered with each other, the length of the first body 201 for accommodating the first and second chains 623 and 625 in the width direction A2 is minimized can do.

The sprockets 195, 196, 295, and 296 may be, for example, polygonal. The length of one side of the polygon can be determined in consideration of the length of the segment link 601. [ For example, the length of one side of the polygon can be determined in consideration of the interval between the hinge axes (Fig. 16: 653) of the adjacent two segment links 601. In this embodiment, rectangular sprockets 195, 196, 295, and 296 are employed, but the scope of the present invention is not limited thereto.

14, the first and second supporting members 6-1 and 6-2 are respectively provided with the first and second receiving portions 151 provided inside the first bodies 101 and 102, (152) (251) and (252). When the first body 101 and the second body 201 are separated from the second body 401 in this state, the first and second support members 6-1 and 6-2 are separated from the first body 101, And is deployed between the first body 101 (201) and the second body (401). 15 is a view illustrating a process in which the first and second support members 6-1 and 6-2 are drawn out from the first body 101 and the second body 201, respectively. Referring to step 1211 of FIG. 15, when the first body 101 is separated from the second body 401 in the longitudinal direction A1, the end links 603a, 605a, 623a, and 625a The first and second supporting members 6-1 and 6-2 are tensioned in the longitudinal direction A1 because they are connected to the second body 401. [ Then, the first and second support members 6-1 and 6-2 start to be drawn out from the first body 101 (201). As the first and second support members 6-1 and 6-2 are pulled out from the first body 101 and the second body 201, the sprockets 195, 196, , 1213, and 1214, as shown in Fig. The first and second support members 6-1 and 6-2 moving in the width direction A2 within the first body 101 and the second body 101 are supported by the sprockets 195 and 196 and 295 and 296, The moving direction thereof is switched to the longitudinal direction A1 and is drawn out of the first body 101 (201) as shown in FIG. Therefore, the first body 101 and the second body 201 can be separated from the second body 401. When the open state is reached, the first and second support members 6-1_ and 6-2 extend in the longitudinal direction A1 as shown in Fig. 13 and are deployed between the first and second bodies 101 and 201 And supports the edges 301a and 301b of the display 301, respectively.

The first and second support members 6-1 and 6-2 are of a chain type in which a plurality of segmented links 601 are rotatably connected to each other, but the range of their rotation is limited. That is, the rotation is not restricted in the winding direction to the sprockets 195, 196, 295, and 296, but when the sprockets 195 are in the unfolded state, they are no longer rotated.

Figs. 16 and 17 are front views respectively showing an embodiment of the first and second support members 6-1 and 6-2. Referring to FIG. 16, the first support member 6-1 is in the form of a chain in which adjacent segment links 601 are connected to each other so as to be pivotable about a hinge axis 653. The hinge axis 653 is an axis perpendicular to the image display surface 301-1. That is, the hinge shaft 653 is an axis orthogonal to the longitudinal direction A1 and the width direction A2. Thus, the first support member 6-1 is in the form of a chain that can be bent in the plane including the display 301. [ The plurality of segmented links 601 are pivotably connected to the unfolded state in a bent state in one direction. The rotation of the first supporting member 6-1 in the unfolding direction 658 is restricted. For this purpose, the segment link 601 is provided with a stopper 601a for restricting rotation. When the plurality of segmented links 601 are unfolded, the stoppers 601a adjacent to each other abut against each other and the rotation in the unfolding direction 658 is restricted. 1, the edge 301a of the display 301 which is drawn out to the outside of the first body 101 (201) can be supported by the first support member 6-1. The center 655 of the hinge axis 653 is offset by an interval 656 in a direction 658 extending from the center 654 of the segmented link 601. Therefore, the first support member 6-1 can be easily bent in the direction 657, and the rotation in the direction 658 can be restricted and stably maintained in the unfolded state.

17, the second support member 6-2 is configured such that adjacent segment links 601 are rotatable about a hinge axis 653 perpendicular to the image display surface 301-1, It is connected chain type. Thus, the second support member 6-2 is in the form of a chain that can be bent in the plane including the display 301. [ The plurality of segmented links 601 are pivotably connected to the unfolded state in a bent state in one direction. The rotation of the second supporting member 6-2 in the unfolding direction 657 is restricted. For this purpose, the segment link 601 is provided with a stopper 601a for restricting rotation. When the plurality of segmented links 601 are unfolded, the stoppers 601a adjacent to each other abut against each other, and rotation in the unfolding direction 657 is restricted. 1, the edge 302a of the display 301 which is drawn out to the outside of the first body 101 (201) can be supported by the second support member 6-2. The center 655 of the hinge axis 653 is offset by an interval 656 in an extending direction 657 from the center 654 of the segmented link 601. Therefore, the second supporting member 6-2 can be easily bent in the bending direction 658, and the rotation in the unfolding direction 657 can be stably maintained in the limited unfolded state.

When the first body 101 and the second body 201 are moved toward the second body 401 in the open state shown in FIG. 13, the first and second support members 6-1 and 6-2 are moved in the longitudinal direction A1 is applied. Then, the first and second support members 6-1 and 6-2 are pushed toward the first body 101 and the second body 201, respectively. The sprockets 195, 196, 295, and 296 are pushed by the first and second support members 6-1 and 6-2 to be rotated in a direction allowing the entry. The direction of movement of the first and second support members 6-1 and 6-2 is switched by the sprockets 195, 196, 295 and 296 from the longitudinal direction A1 to the width direction A2 The first and second support members 6-1 and 6-2 start to be housed in the receiving portions 151, 152, 251 and 252, respectively. When the closed state is reached, as shown in Fig. 14, the first and second support members 6-1 and 6-2 are completely housed in the first body 101 (201). As described above, the display 301 is wrapped around the rollers 103 and 203 and housed inside the first body 101 (201).

The edges 301a and 301b of the display 301 that are drawn out to the outside of the first body 101 and the second body 201 are separated from the first and second support members 6-1 and 6-2, So that the display 301 can be kept flat in the open state.

In the case of the structure in which the supporting member is wound on the roller together with the display, the diameter of the roller including the display and the supporting member becomes large, so that the first body 101 (201) can be large. According to the present embodiment, since the first and second support members 6-1 and 6-2 are separated from the display 301 and housed in the first body 101 and the second body 201, The sizes of the first and second bodies 101 and 201 can be reduced compared with the structure in which the rollers are wound.

Further, in the case of a structure in which the support member is wound on the roller together with the display, the rotation axis of the segment link forming the support member becomes the width direction of the display. The supporting member having such a structure is very weak in the external force in the direction perpendicular to the image display surface of the display. According to this embodiment, the hinge axis 653 of the plurality of segment links 601 forming the first and second support members 6-1 and 6-2 is perpendicular to the image display surface 301-1 The first and second support members 6-1 and 6-2 have a strong resistance to an external force applied to the display 301 in a direction perpendicular to the image display surface 301-1. Therefore, the display 301 can be stably maintained in a flat state.

The rotation directions of the segment links 601 of the first and second support members 6-1 and 6-2 are opposite to each other. Therefore, when the first and second support members 6-1 and 6-2 are drawn out to the outside of the first body 101 and the second body 101, 1 and the second support members 6-1 and 6-2, the display 301 can be stably deployed.

Fig. 18 is a plan view of one embodiment of the rollerable display device shown in Fig. 11, showing an opened state. Referring to Fig. 18, the display 301 needs to be kept in contact with the first and second support members 6-1 and 6-2 in order to keep the display 301 flat. When the display 301 is lifted from the first and second supporting members 6-1 and 6-2, the display 301 is difficult to keep flat. To this end, a connection structure for connecting the display 301 to the support unit 6 in an unobtrusive manner may be employed in the roller-blind display device.

19 is an exploded perspective view showing an embodiment of the connection structure. 20 is a rear perspective view of an embodiment of the connection structure shown in FIG. 21 is a cross-sectional view taken along line C-C 'in Fig. 22 is a view conceptually showing a process of connecting the connecting member and the supporting unit 6. Fig. 23A is a perspective view showing a state in which the display 301 is wound around the rollers 103 and 203. Fig. 19 to 23A show the connection structure between the first support member 6-1 and the display 301, but the connection structure between the second support member 6-2 and the display 301 is the same. Therefore, in FIGS. 19 to 23A, reference numerals for explaining the connection structure between the second support member 6-2 and the display 301 are indicated in parentheses.

Referring to FIGS. 19 to 23A, a plurality of connecting members 701 are coupled to edges 301a and 301b of the display 301. FIG. The connecting member 701 may be, for example, in the form of a clip. The pitch between the plurality of connecting members 701 disposed along the edges 301a and 301b of the display 301 may be constant or may not be constant. As an example, the pitch between the plurality of connecting members 701 may be equal to the interval between the plurality of segmented links 601. As another example, the distance between the plurality of connecting members 701 is larger toward the second body 401, and may be smaller for the rollers 103 and 203. The length of the display 301 which is once wound on the rollers 103 and 203 when the display 301 is wound on the rollers 103 and 203 is such that the display 301 is wound on the rollers 103 and 203 The winding of the rollers 103 and 203 at one time is longer than the length of the display 301. The spacing between the plurality of connecting members 701 is such that when the display 301 is wound on the rollers 103 and 203 a plurality of connecting members 701 are radially arranged at a plurality of positions in the circumferential direction Can be determined to be aligned. In other words, when the display 301 is wound on the rollers 103 and 203, a plurality of connecting members 701 are radially and coaxially positioned at a plurality of positions in the circumferential direction, as shown in Fig. 23A. With such a configuration, when the display 301 is wound around the rollers 103 and 203, the image display surface 301-1 and the back surface 301-2 are spaced apart from each other. Therefore, when the display 301 is wound around the rollers 103 and 203 or loosened from the rollers 103 and 203, the image display surface 301-1 and the back surface 301-2 are separated from each other by friction between the image display surface 301-1 and the back surface 301-2 301-1) can be reduced.

Referring to Fig. 23A, the connecting member 701 may have a protrusion 701c and a recess 701d formed concavely on the opposite side of the protrusion 701c. When a plurality of connecting members 701 are radially aligned in a radial direction at a plurality of positions in the circumferential direction, the protruding portion 701c of the connecting member 701-1 located radially outward is located at the inner side of the connecting member 701c, Can be inserted into the concave portion 701d of the side wall 701-2. Thereby, the connecting member 701-1 and the connecting member 701-2 can be aligned in the radial direction without deviating in the longitudinal direction A1 of the display 301. [ Therefore, the plurality of connecting members 701 can be stably radially aligned.

21, the connecting member 701 includes a fixed portion 701a to which the edges 301a and 301b of the display 301 are fixed, and a stepped first connection portion 701b from the fixed portion 701a do. The first connection portion 701b is connected to the second connection portion 601b provided in the segment link 601 constituting the first and second support members 6-1 and 6-2. For example, the first connection portion 701b may have a protrusion shape and the second connection portion 601b may have an insertion groove shape in which the first connection portion 701b is inserted, or vice versa. The insertion groove may be in the form of being incised in the longitudinal direction A1. The first connection portion 701b can be easily connected to the second connection portion 601b even if the interval between the plurality of connection members 701 is not constant. The first connection portion 701b is connected to the second connection portion 601b so that the display 301 can be stably supported without being separated from the first and second support members 6-1 and 6-2 So that the display 301 can be held flat.

20 is a schematic plan view of FIG. 20, that is, the rollers 103 and 203 and the first and second support members 6-1 and 6-2 are connected to the rollers 103 and 203, As viewed from the direction of the rotating shafts 103a and 203a. The right side view 1003 of FIG. 22 is a schematic rear view of FIG. 20, that is, the rollers 103 and 203 and the first and second support members 6-1 and 6-2 are supported by sprockets 195 and 196 (295) and 296 (296), respectively, in the direction of the rotary shaft 195a (196a), 295a and 296a. A process of connecting the connecting member 701 and the segmented link 601 when the display 301 is released from the rollers 103 and 203 will be described with reference to Figs.

As described above, the rotary shafts 195a, 196a, 295a, and 296a of the sprockets 195, 196, 295, and 296 are orthogonal to the rotary shafts 103a and 203a of the rollers 103 and 203, do. The first and second support members 6-1 and 6-2 are moved in the width direction A2 within the first body 101 and the sprockets 195 and 196 and 295 and 296 , The moving direction is switched to the longitudinal direction A1. Thus, the segmented link 601 that has passed through the sprockets 195, 196, 295, and 296 is moved in the longitudinal direction Al along with the display 301. The rollers 103 and 203 and the sprockets 195 and 196 and 295 and 296 are connected to the display 301 and the first and second support members 6-1 and 6 -2).

22, when the first body 101 (201) moves away from the second body 401, the display 301 is released from the rollers 103 and 203 and moved in the first direction A1. At this time, the first and second support members 6-1 and 6-2 are moved in the width direction A2 and are moved by the sprockets 195, 196, 295 and 296 in the longitudinal direction A1 ). The distance between the segmented link 601 and the display 301 during the rotation of the direction of movement, i.e., when the segmented link 601 is engaged with the sprockets 195, 196, 295 and 296, As shown by reference numerals 1013, 1014, and 1015 in FIG. Similarly, the distances between the edges 301a and 301b of the display 301 and the segmented links 601 are gradually decreased as indicated by reference numerals 1021, 1022, and 1023 in the right side view 1003. While the segmented link 601 approaches the display 301 while engaging the first and second sprockets 195, 196, 295 and 296 and its direction of travel is switched, as shown in Figs. 20 and 21 The first connection portion 701b of the connection member 701 is sequentially connected to the second connection portion 601b of the plurality of segmented links 601 and the display 301 and the segmented link 601 are connected to the first body 101 ) 201 as shown in Fig. With such a configuration, the display 301 is stably supported without being separated from the first and second support members 6-1 and 6-2, The display 301 can be kept flat.

The segment link 601 is engaged with the sprockets 195, 196, 295 and 296 so that the direction of movement of the segment link 601 in the longitudinal direction A1 ) To the width direction A2. In this process, the segment link 601 gradually moves away from the edges 301a and 301b of the display 301, and the first connection portion 701b is separated from the second connection portion 601b. The display 301 is wrapped around the rollers 103 and 203 and housed in the first body 101 and 201. The first and second support members 6-1 and 6-2 are accommodated in the storage unit 151 ) 152 (251) and (252).

The structure for preventing slip in the longitudinal direction A1 of the connecting members 701-1 and 701-2 located radially outward and inward and aligning them in the radial direction is shown in Fig. 701c and a concave portion 701d corresponding to the concave portion 701d and open at one side in the width direction A2 are adopted. The shapes of the protrusion 701c and the concave portion 701d are not limited to those shown in Fig. 23a. 23B to 23H show various shapes of the projection 701c and the recess 701d.

23B, the projecting portion 701c and the recessed portion 70-1d may each have a partial ball shape and a concave shape closed in the longitudinal direction A1 and the width direction A2. 23C, the protruding portion 701c and the recessed portion 70-1d may each have a sharp shape (cone or pyramid shape) and a concave shape closed in the longitudinal direction A1 and the width direction A2. 23D, the projection 701c has a rectangular parallelepiped shape, and the concave portion 70-1d has a concave shape closed in the longitudinal direction A1 and the width direction A2. 23E and 23F, the projecting portion 701c is in the shape of a rectangular parallelepiped, and the recessed portion 70-1d is a concave shape which is closed in the longitudinal direction A1 and one side is opened in the width direction A2. 23G and 23H, the protrusion 701c has a pointed shape (conical or pyramid shape), the concave portion 70-1d has a concave shape with one side closed in the longitudinal direction A1 and one side opened in the width direction A2 to be.

A magnetic force can be used as a structure for preventing slip in the longitudinal direction A1 of the connecting members 701-1 and 701-2 and aligning them in the radial direction. 23I is a schematic cross-sectional view of one embodiment of a slip prevention structure using magnetic force. Referring to Fig. 23 (i), the connecting member 701 has a first magnetic member 701e and a second magnetic member 701f located on the opposite side. The first magnetic member 701e and the second magnetic member 701f have opposite polarities. When a plurality of connecting members 701 are radially and collinearly positioned at a plurality of positions in the circumferential direction, the first magnetic member 701e of the connecting member 701-1 located radially outward is positioned inside And is attached to the second magnetic member 701f of the connecting member 701-2 by magnetic force. Thereby, the connecting member 701-1 and the connecting member 701-2 can be aligned in the radial direction without deviating in the longitudinal direction A1 of the display 301. [ Therefore, the plurality of connecting members 701 can be stably radially aligned. The first magnetic member 701e and the second magnetic member 701f may have a protruding shape and a concave shape as shown in Figs. 23A to 23H.

As a structure for preventing slip in the longitudinal direction A1 of the connecting members 701-1 and 701-2 and aligning them in the radial direction, a frictional force can be used. 23J is a schematic cross-sectional view of an embodiment of a slip prevention structure using a frictional force. Referring to FIG. 23J, the connecting member 701 has a first opposing portion 701h positioned on the image display surface 301-1 side and a second opposing portion 701i positioned on the opposite side. At least one of the first and second opposing portions 701h and 701i has a frictional portion 701j that enhances frictional force. The frictional portion 701j may be formed by, for example, attaching a frictional member made of an elastomer or the like having a large frictional force to the connecting member 701, coating a material having a large frictional force or imparting surface roughness to the connecting member 701 . ≪ / RTI > When the plurality of connecting members 701 are positioned in the radial direction in a plurality of positions in the circumferential direction, the first opposing portion 701h of the connecting member 701-1 located radially outward is positioned inside The second opposing portion 701i of the connecting member 701-2. At least one of the first and second opposing portions 701h and 701i is provided with the frictional portion 701j so that the connecting member 701-1 and the connecting member 701-2 are rotated by the frictional force, Can be aligned in the radial direction without deviating in the longitudinal direction A1. Therefore, the plurality of connecting members 701 can be stably radially aligned.

23K is a schematic plan view of an embodiment of a slip prevention structure using frictional force. Referring to FIG. 23K, a slip preventing portion 701k is provided between the plurality of connecting members 701. [ The slip prevention portion 701k is provided on the back surface 301-2 of the display 301. [ The slip prevention portion 701k may be in the form of a strip. The slip prevention portion 701k can be realized by, for example, attaching a strip-shaped member made of an elastomer or the like having a large frictional force to the back surface 301-2 of the display 301. [ The connecting member 701 has a first opposing portion 701h positioned on the image display surface 301-1 side and a second opposing portion 701i located on the opposite side. When the plurality of connecting members 701 are positioned in the radial direction in a plurality of positions in the circumferential direction, the first opposing portion 701h of the connecting member 701-1 located radially outward is positioned inside The second opposing portion 701i of the connecting member 701-2. The first opposing portion 701h slides against the second opposing portion 701i and is brought into contact with the slip prevention portion 701k even if the first opposing portion 701h slides in the longitudinal direction A1 so that the second opposing portion 701h does not slip in the longitudinal direction A1, 701i. Therefore, the plurality of connecting members 701 can be stably radially aligned. Although not shown in the drawing, at least one of the first and second opposing portions 701h and 701i may have the friction portion 701j shown in FIG. 23J.

A zipper-lock structure may be used as a structure for preventing slip in the longitudinal direction A1 of the connecting members 701-1 and 701-2 and aligning them in the radial direction. 231 is a schematic plan view of an embodiment of a slip prevention structure using a zip-lock structure. 231, the connecting member 701 has a protrusion 701m and a recess 701n. The protruding portion 701m has an extending portion 701m-1 extending in the thickness direction of the display 301, i.e., the radial direction of the rollers 103 and 203 and the extending portion 701m-1 extending in the longitudinal direction A1 from the extending portion 701m- And a resilient arm 701m-2 that is elongated and resiliently deformable in the longitudinal direction A1. The concave portion 701n is provided in the vicinity of the opening 701n-2 of the accommodating portion 701n-1 so that the resilient arm 701m-2 is caught by the engaging portion 701n- And a portion 701n-3. The width W2 of the opening 701n-2 is smaller than the width W1 of the resilient arm 701m-2.

When the plurality of connecting members 701 are radially aligned in the radial direction at a plurality of positions in the circumferential direction, the protruding portion 701m of the connecting member 701-1 located radially outward is located at the inner side of the connecting member 701. [ And is engaged with the concave portion 701n of the second housing 701-2. That is, as the display 301 is wound around the rollers 103 and 203, the connecting member 701-1 approaches the connecting member 701-2, and the resilient arm 701m-2 approaches the opening 701n-2 (701n-1). 2 is smaller than the width W1 of the resilient arm 701m-2 because the width W2 of the opening 701n-2 is smaller than the width W1 of the resilient arm 701m-2. Therefore, the resilient arm 701m- 3). In this state, the connecting member 701-1 is pushed toward the connecting member 701-2 by the tension applied to the display 301, and the resilient arm 701m-2 is compressed in the direction in which the width W1 is reduced. The elastic arm 701m-2 passes through the opening 701n-2 at the moment when the width W1 becomes equal to the width W2 of the opening 701n-2 and the elastic arm 701m- 1). Then, the resilient arm 701m-2 returns to the original state, and the resilient arm 701m-2 is caught by the retaining portion 701n-3. Therefore, the projection 701m is held in the state of being inserted into the concave portion 701n, and the plurality of connecting members 701 can be stably radially aligned.

When the display 301 is released from the rollers 103 and 203, a force (a separation force) in a direction away from the connecting member 701-2 is applied to the connecting member 701-1. When the resilient arm 701m-2 is caught by the retaining portion 701n-3 and the spacing force is applied, the resilient arm 701m-2 is compressed in the direction in which the width W1 becomes smaller. The elastic arm 701m-2 passes through the opening 701n-2 at the moment when the width W1 becomes equal to the width W2 of the opening 701n-2 and the elastic arm 701m- 1. The protrusion 701m is separated from the concave portion 701n and the display 301 can be released from the rollers 103 and 203 and deployed outside the first body 101 and 201. [

The first body 101 (201) may be slidably supported on the stand 501 in the longitudinal direction A1. 24 is a perspective view of one embodiment of the rollerable display device.

Referring to FIG. 24, the first body 101 and the second body 201 are shown without the housing forming the external appearance. The stand 501 is shaped to extend in the longitudinal direction A1. The stand 501 is provided with a pair of rails 502 and 503. The pair of rails 502 and 503 extend in the longitudinal direction A1. The first bodies 101 and 201 are connected to the rails 502 and 503, respectively. The first body 101 and the second body 201 can be supported on the stand 501 so that they can slide in the longitudinal direction A1.

In one embodiment, the rail 502 may include a pair of slide bars 502a, 502b. The slide bar 502a is slidably supported on the slide bar 502b in the longitudinal direction A1. The slide bar 502b is slidably supported on the stand 501 in the longitudinal direction A1. The first body 101 is connected to the slide bar 502a. The slide bar 502b is slid with respect to the stand 501 within the range of the length of the stand 501 and the slide bar 502a is moved beyond the range of the stand 501 to the slide bar 502b As shown in Fig. The sliding area of the first body 101 can be extended beyond the range of the length of the stand 501 while reducing the length of the stand 501 in the longitudinal direction A1.

Similarly, the rail 503 may have a pair of slide bars 503a and 503b. The slide bar 503a is slidably supported on the slide bar 503b in the longitudinal direction A1. The slide bar 503b is slidably supported on the stand 501 in the longitudinal direction A1. The first body 201 is connected to the slide bar 503a. With this structure, the sliding area of the first body 201 can be extended beyond the length of the stand 501 while reducing the length of the stand 501 in the longitudinal direction A1.

The display 301 can be drawn out from the first body 101 (201) only by a required length. The unfolded length of the display 301, that is, the length drawn out of the first body 101 (201), can be adjusted in multiple stages. Adjustment of the deployment length can be realized by locking the first body 101 (201) to a plurality of spaced positions with respect to the second body (401). The rollerable display device may have a locking unit that locks the first body 101 (201) to the second body 401 at a plurality of spaced positions.

25A is a front view of one embodiment of the locking unit. Referring to FIG. 25A, the locking unit has a blocking member 1400 that locks the first body 101 (201) to a plurality of spaced apart positions. The blocking member 1400 of this embodiment selectively permits movement in the direction A1-1 in which the first supporting member 6-1 is accommodated in the first body 101 and the second body 201. [ The blocking member 1400 is provided with a blocking position (position shown by a solid line) for blocking the first supporting member 6-1 from moving in the direction A1-1 in which the first supporting member 6-1 is housed in the first body 101 , And a permissible permitting position (position shown by a dotted line). For example, the blocking member 1400 may be rotatably supported in the blocking position and the permitting position in the first body 101 (201). The elastic member 1410 applies an elastic force to the blocking member 1400 in the direction to be pivoted to the blocking position. The blocking member 1400 includes a blocking portion 1401 for blocking the movement of the first member 603 in the receiving direction A1-1 and a blocking portion 1402 for partially blocking the first body 101, And an operation unit 1402 exposed to the outside of the display unit 201. The blocking member 1400 is positioned adjacent to the sprocket 195. A gap is created between the segment link 601-1 in which the sprocket 195 is shifted in the conveying direction and the segment link 601-2 located in front of the segment link 601-1. The blocking member 1400 is configured such that the blocking portion 1401 is engaged with the rear end portion 601-2a of the segmented link 601-2 or the end portion of the storing direction A1-1 as shown by the solid line in FIG. 1 member 603 in the housing direction.

When the first body 101 and the second body 201 are separated from the second body 401, that is, when the first supporting member 6-1 is pulled out from the first body 101 The segment link 601-1 pushes the blocking portion 1401 and the blocking member 1400 is switched to the permissible position. When the interference between the segmented link 601-1 and the blocking portion 1401 is completed, the blocking member 1400 is returned to the blocking position by the elastic force of the elastic member 1410. [ The rear end portion 601-2a of the segmented link 601-2 is caught by the blocking portion 1401 and the movement of the first supporting member 6-1 in the receiving direction A1-1 is blocked. The first body 101 is separated from the second body 401 and the display 301 is drawn out to the outside of the first body 101 and the second body 201 by the repetition of the above process. In this state, in order to move the first body 101 (201) toward the second body (401), the first support member (6-1) must be moved in the storage direction (A1-1) . However, since the rear end portion 601-2a of the segmented link 601-2 is caught by the blocking portion 1401 of the blocking member 1400 located at the blocking position, (A1-1). Therefore, the first body 101 (201) can not be moved in a direction approaching the second body 401, and the deployment length of the display 301 can be maintained. When the display 301 is to be stored in the first body 101 or 201, the first body 101 (201) is moved to the second position after switching the blocking member 1400 to the permissible position by pressing the operating portion 1402 The body 401 can be approached.

With this configuration, the unfolded length of the display 301 can be adjusted in units of the length of the segmented link 601.

25A, a structure for selectively permitting movement of the first support member 6-1 in the storage direction A1-1 has been described by using the shielding member 1400, May be applied to selectively allow movement of the member 6-2 in the storage direction A1-1.

25B is a front view of one embodiment of the locking unit. Referring to Fig. 25B, the locking unit has a blocking member 1420. Fig. The blocking member 1420 selectively allows rotation in the direction A1-3 in which the first supporting member 6-1 of the sprocket 195 is accommodated in the first body 101 (201). The sprocket 195 is provided with a plurality of engagement protrusions 195b arranged in the circumferential direction. The blocking member 1420 has a blocking position (a position shown by a solid line) for blocking the rotation of the sprocket 195 in the storage direction A1-3 by being caught by the engagement step 195b and a permissible position Lt; / RTI > position). For example, the blocking member 1420 may be rotatably supported in the blocking position and the permitting position in the first body 101 (201). The elastic member 1430 applies an elastic force to the blocking member 1420 in a direction to be rotated to the blocking position. A portion of the blocking member 1420 may be partially exposed to the outside of the first body 101 (201) so that the user can switch to the permissible position. Although not shown in the drawing, the first body 101 and the second body 201 may be provided with a manipulation portion connected to the blocking member 1420 to switch the blocking member 1420 to the permissible position.

When the first body 101 and the second body 201 are separated from the second body 401, the sprocket 195 is moved in the direction in which the first support member 6-1 is pulled out from the first body 101 The locking jaw 195b pushes the blocking portion 1421 to switch the blocking member 1420 to the permissible position. The blocking member 1420 is returned to the blocking position by the elastic force of the elastic member 1430 and the elastic force of the elastic member 1430 is transmitted to the blocking member 1420 in the receiving direction A1-3 of the sprocket 195 The rotation is blocked. The first body 101 is separated from the second body 401 and the display 301 is drawn out to the outside of the first body 101 and the second body 201 by the repetition of the above process. In this state, in order to move the first body 101 (201) toward the second body (401), the sprocket (195) must be rotated in the receiving direction (A1-3). However, since the latching jaw 195b is caught by the blocking portion 1401 of the blocking member 1400 located at the blocking position, the sprocket 195 can not be rotated in the receiving direction A1-3. Therefore, the first body 101 (201) can not be moved in a direction approaching the second body 401, and the deployment length of the display 301 can be maintained. When the display 301 is to be housed in the first body 101 or 201, the operation of the operation unit (not shown) is performed to switch the blocking member 1420 to the permissible position and then the first body 101 2 body (401).

With this configuration, the unfolded length of the display 301 can be adjusted in units of the intervals of the plurality of latching protrusions 195b.

25B shows a structure in which the blocking member 1420 selectively allows rotation of the sprocket 195 in the receiving direction A1-3. However, the blocking member 1420 includes the sprockets 196, 295 296 in the receiving direction A1-3.

26 is a schematic plan view of one embodiment of the rollerable display device. In FIG. 26, the first body 101 is mainly shown. Referring to FIG. 26, guide rollers 104 and 204 are provided on the first body 101 and the second body 201, respectively. The guide rollers 104 and 204 guide the display 301 unwound from the rollers 103 and 203 to the openings 111 and 211 provided in the first body 101 and the second body 201, respectively. In the absence of the guide rollers 104 and 204 the display 301 is directed to the openings 111 and 211 along the path indicated by B1 when the display 301 is most wound on the rollers 103 and 203, The display 301 is directed to the opening 111 (211) along the path indicated by B2 when the display 301 is wound at least on the rollers 103 and 203. [ That is, the direction of the display 301 drawn out through the openings 111 and 211 is changed in accordance with the change in the amount of the display 301 being wound around the rollers 103 and 203. When the guide rollers 104 and 204 are provided, the distance between the rollers 103 and 203 and the guide rollers 104 and 204 in accordance with the change in the amount of reduction of the display 301 to the rollers 103 and 203 The traveling direction of the display 301 between the guide rollers 104 and 204 to the openings 111 and 211 is indicated by reference sign B Lt; / RTI > Therefore, the traveling direction of the display 301 drawn out through the openings 111 and 211 can be kept constant.

The first and second support members 6-1 and 6-2 can be brought in and out of the first body 201 in synchronism with each other. 27 is a rear view of one embodiment of the rollerable display device. In Fig. 27, the housing of the first body 101 (201) is omitted. 27, the first and second sprockets 195 and 196 may be connected to each other by a power connecting means. The power connection means may comprise, for example, gears, belts, timing belts, wires, and the like. An example of the power connecting means will be described with reference to Fig. A gear 1501 is provided in the second sprocket 196. The second sprocket 196 is provided with a pulley 1506. A gear 1504a is provided on the pulley 1504b paired with the pulley 1506. [ The gear 1501 and the gear 1504a are connected to each other by gears 1502 and 1503. A belt, for example, a timing belt 1505 is attached to the pulley 1506 and the pulley 1504b. Accordingly, the first and second sprockets 195 and 196 can be rotated in synchronization with each other. Likewise, the first and second sprockets 295 and 296 provided in the second body 201 are connected to each other by the power connecting means in the same manner as in the reference numerals shown in parentheses in Fig. 27, have. Therefore, the first and second support members 6-1 and 6-2 can be brought in / out to / from the first body 101 (201) synchronously.

As the first body 101 (201) approaches the second body (401), the rollers (103) and (203) roll the display (301). For this purpose, the rollers 103 and 203 need to be rotated in the direction in which the display 301 is rolled up. Hereinafter, embodiments of the structure for rotating the rollers 103 and 203 will be described. 28 is an exploded perspective view showing an embodiment of a structure in which the rollers 103 and 203 are rotatably supported by the first body 101 and the second body 201, respectively. 29 is a sectional view taken along the line E-E 'in Fig.

28 and 29, one ends 103-1 and 203-1 of rollers 103 and 203 are rotatably supported by frames 150 and 250, respectively. The other end portions 103-2 and 203-2 of the rollers 103 and 203 are rotatably supported by the frames 150 and 250 via the tension applying portion 7.

The tension applying unit 7 is provided with the first body 101 (201) so that the display 301 can be rotated in the same direction as the rollers 103 and 203 as the first body 101 (201) . The tension applying section 7 includes a torsion spring 63 and a rotation support member 60 which is supported by the frame 150 and 250 so as to support one end 63b of the torsion spring 63 and is rotatably supported do. The rotation support member 60 includes a bush member 61 rotatably supported by the frames 150 and 250 and a bush member 61 which is rotatably supported by the frames 150 and 250. The other end portions 103-2 and 203-2 of the rollers 103 and 203 rotate And a shaft member 62 having a support shaft 62c which is supported so as to be supported. The bush member 61 is rotatably supported by the frame 150 (250). The shaft member 62 is rotated together with the bush member 61. [ To this end, first and second engaging portions 61a and 62a having complementary shapes are provided on the bush member 61 and the shaft member 62 so as to be mutually engaged in a rotating direction. The support shaft 62c is inserted into the inner diameter portion 63a of the torsion spring 63. [ One end 63b of the torsion spring 63 is fixed to the shaft member 62. [ For example, one end 63b of the torsion spring 63 is inserted into a fixing groove 62b provided in the shaft member 62. [ The rollers 103 and 203 are provided with hollow portions 103-3 and 203-3. The torsion spring 63 is inserted into the hollow portions 103-3 and 203-3 while being inserted into the support shaft 62c. The hollow portions 103-3 and 203-3 are provided with latching portions 103-4 and 203-4 to which the other end portion 63c of the torsion spring 63 is hooked.

The end portions 103-1 and 203-1 are rotatably supported by the frames 150 and 250 while the other end portions 103-2 and 203-2 are supported by the tension applying portion The rollers 103 and 203 which are rotatably supported by the frames 150 and 250 via the guide rails 7 can be realized. 29, the rotation support member 60 is rotated in the direction of the arrow D1 to adjust the initial elastic force (i.e., the initial elastic force) in the direction in which the display 301 is wound around the rollers 103 and 203 F1) can be applied. A tension in a direction in which the display 301 is flatly spread can be applied by the initial elastic force F1.

Since the rotation support member 60 is rotated in the direction D2 opposite to the arrow D1 when the rotation support member 60 is in a free state in which the rotation of the rotation support member 60 is not restricted in the state where the initial elastic force F1 is applied, The initial elastic force F1 can not be applied. Therefore, the rotation support member 60 needs to be locked so as not to rotate in the state where the initial elastic force F1 is applied.

The rotation support member 60 is connected to at least one of the first and second support members 6-1 and 6-2 in a state where the initial elastic force F1 is applied. That is, the rotation support member 60 is connected to at least one of the first and second support members 6-1 and 6-2, and is locked in a state where the initial elastic force F1 is applied. When at least one of the first and second support members 6-1 and 6-2 moves, the rotation support member 60 is rotated accordingly. For example, the rotation support member 60 may be connected to the sprockets 195, 196, 295, and 296. Therefore, if the sprockets 195, 196, 295, and 296 are not rotated, the rotation support member 60 is also locked without being rotated. When the sprockets 195, 196, 295, and 296 are rotated, the rotation support member 60 is rotated.

30 is a perspective view showing an example of a connection structure between the rotation support member 60 and the sprockets 195, 196, 295, and 296. Referring to Figs. 27, 28 and 30, the rotation support member 60, for example, the bush member 61 is provided with a gear portion 61b. The gear portion 61b is connected to the sprockets 195, 196, 295, and 296. For example, the gear portion 61b is connected to the gear 1501 provided in the sprockets 196 and 296 of the gears 1507 to 1510. The rotation direction of the rollers 103 and 203 and the rotation support member 60 is orthogonal to the rotation direction of the sprockets 196 and 296 so that one of the gears 1507 to 1510 can rotate the rotation direction 90 degrees Structure. For example, the gear 1510 includes a flat gear unit 1510a connected to the gear 1509 and a bevel gear unit 1510 rotated coaxially with the flat gear unit 1510. The gear portion 61b is a bevel gear engaged with the bevel gear portion 1510b. With such a constitution, the rotation support member 60 is rotated by the rotation of the sprockets 195, 196, 295, and 296 as the first and second support members 6-1 and 6-2 move And is rotated in conjunction therewith.

The rotation support member 60 is rotated in the direction of the arrow D1 to apply the initial elastic force F1 in the direction of winding the display 301 to the rollers 130 and 203 When the gear portion 61b engages with the bevel gear portion 1510b, the rotation supporting member 60 can be held in that state. In this state, when the first body 101 (201) approaches / separates from / to the second body 401 and the display 301 is drawn / drawn into / from the first body 101 (201) The rotation support members 103 and 203 and the rotation support member 60 are rotated in the direction in which the display 301 is unwound or in the direction in which the display 301 is rolled up.

31 is a graph showing the relationship between the development distance of the display 301, the amount of rotation of the rollers 103 and 203, and the amount of rotation of the rotation support member 60. FIG. Referring to Fig. 31, when the development distance is "0 ", the initial amount of rotation of the rollers 103 and 203 is d1. The initial rotation amount d1 does not mean that the rollers 103 and 203 are actually rotated but refers to the relative rotation amount with respect to the rotation support member 60 for applying the initial elastic force F1.

The amount of rotation of the rollers 103 and 203 is not linearly proportional to the development distance of the display 301. [ This is because the outer diameters of the rollers 103 and 203 including the display 301 are changed according to the amount of the display 301 wound around the rollers 103 and 203. That is to say, when the amount of the display 301 wound around the rollers 103 and 203 is small, the rollers 103 and 203 are moved in the same direction as the rollers 103 and 203, The amount of rotation of the motor 203 is larger. Therefore, the relationship between the spreading distance and the amount of rotation of the rollers 103 and 203 becomes a curve shape in which the slope gradually increases as the spreading distance increases as indicated by E1 in FIG.

If the rotation support member 60 is not rotated, the amount of rotation of the rollers 103 and 203 becomes d2 in a state in which the display 301 is completely drawn out from the first body 101 (201). The magnitude of the elastic force F2 applied to the rollers 103 and 203 by the torsion spring 63 is proportional to the rotation amount d2. Therefore, when the display 301 is completely drawn out from the first body 101 (201), a very strong elastic force (F2) is applied to the rollers 103 and 203. As the development distance of the display 301 becomes larger A large force is required to separate the first body 101 (201) from the second body 401.

The rotation support member 60 is rotated together with the rollers 103 and 203 as the display 301 is pulled in / out to / from the first body 101 and 201. Since the development distance of the display 301 with respect to the first body 101 and the second body 201 is the same as the movement amount of the first and second support members 6-1 and 6-2, Is linearly proportional to the development distance of the display 301 with respect to the first body 101 (201). Therefore, the relationship between the development distance and the rotation amount of the rotation support member 60 is a linear shape having a gradient E2a as indicated by E2 in Fig.

The magnitude of the elastic force applied to the rollers 103 and 203 by the torsion spring 63 is proportional to the difference between the rotation amount of the rollers 103 and 203 and the rotation amount of the rotation support member 60. [ That is, the magnitude of the elastic force applied to the rollers 103 and 203 by the torsion spring 63 when the display 301 is completely drawn out from the first body 101 (201) is proportional to d4. Therefore, according to this embodiment in which the rotation support member 60 is rotated together with the rollers 103 and 203, the elastic force F2 'when the display 301 is completely drawn out from the first body 101 (201) Is smaller than the elastic force F2 in the structure in which the rotation support member 60 is not rotated. Therefore, it is possible to reduce the change in the magnitude of the elastic force applied to the rollers 103 and 203, that is, the change in the magnitude of the tension applied to the display 301 in the course of the development of the display 301, It is possible to reduce the change in the force required in the course of development.

The slope E2a of the straight line E2 can be adjusted by the connection ratio between the gear portion 61b and the sprocket 196. [ For example, the inclination E2a of the straight line E2 can be adjusted by making at least one of the gears 1507 to 1510 as a reduction gear. The minimum value d _min of the difference between the amount of rotation of the rollers 103 and 203 and the amount of rotation of the rotation support member 60 can be obtained by appropriately selecting the gear ratio of the reduction gear so that the display 301 is kept flat, 301 can be equal to or larger than a value that generates a minimum elastic force required to rotate the rollers 103, 203 as necessary according to the development distance. The slope E2a of the straight line E2 may be set equal to the slope E3a of the straight line E3 connecting the initial amount of rotation of the rollers 103 and 203 with the final amount of rotation. Accordingly, it is possible to minimize the amount of variation in the magnitude of the elastic force applied to the rollers 103 and 203 by the torsion spring 63 according to the development distance of the display 301.

In the above-described embodiment, the first body 101 and the second body 401 are manually moved toward / away from the second body 401 to allow the display 301 to be pulled in / out from the first body 101 The first body 101 and the second body 401 may be moved toward and away from the second body 401 by using a motor so that the display 301 is attached to the first body 101 and the second body 101, Or the like. As one example, the motor rotates the first and second sprockets 195, 196, 295 and 296 to move the first and second support members 6-1 and 6-2, The display unit 301 can be moved in or out of the first body 101 by moving the first body 101 or the second body 201 toward or away from the second body 401. Referring to Figs. 27 and 30, the rollerable display device includes a motor 1500. Fig. The motor 1500 rotates the gear 1507. The gear 1507 is connected to a gear 1501 provided in the sprocket 196. When the motor 1500 is driven in the normal direction and the first and second sprockets 195, 196, 295, and 296 are rotated in the drawing direction, the first and second support members 6-1 (6-2) are deployed outside the first body (101) (201). When the first body 101 and the second body 201 are separated from the second body 401 and the display 301 is drawn out from the first body 101 and then is extended to the first body 101, .

On the contrary, when the motor 1500 is driven in the reverse direction to rotate the first and second sprockets 195, 196, 295 and 296 in the receiving direction, the first and second supporting members 6-1 and 6 -2 are introduced into the first body 101 (201). Then, the first body 101 and the second body 101 are moved toward the second body 401, and the display 301 can be housed in the first body 101 and the second body 201, respectively.

In this process, the rotation support member 60 can also be rotated in proportion to the development distance of the display 301. [

32 is a partial perspective view of one embodiment of the rollerable display device. 33 is a cross-sectional view taken along line G-G 'in Fig. Referring to Figs. 32 and 33, the segmented link 601 has a form capable of protecting the edges 301a and 301b of the display 301. Fig. The segment link 601 has ribs 601c extending from the back surface 301-2 of the display 301 to the image display surface 301-1 beyond the edges 301a and 301b. The ribs 601c cover the edges 301a and 301b of the display 301. There is a possibility that the edges 301a and 301b may be damaged by an external impact while the display 301 is being developed. According to the present embodiment, the edges 301a and 301b are covered by the ribs 601c. Therefore, the risk of damage to the edges 301a and 301b of the display 301 can be reduced.

34 is a schematic plan view of one embodiment of a rollerable display device. Referring to Fig. 34, the first and second support members 6-1 and 6-2 support the central portion of the display 301 in the width direction A2. In FIG. 34, the first and second support members 6-1 and 6-2 are adjacent to each other in the width direction A2, but may be spaced apart from each other. The rotation directions of the segment links 601 of the first and second support members 6-1 and 6-2 are opposite to each other. With this configuration, when the first and second support members 6-1 and 6-2 are drawn out to the outside of the first body 101 and the second body 201, The display 301 can be kept stably deployed since the rotation of the display unit 301 is limited by the first and second support members 6-1 and 6-2. The first and second support members 6-1 and 6-2 are inserted into or drawn out from the first and second bodies 101 and 201, And the structure for rotating the rollers 103 and 203 is the same as that described above.

Although a structure in which a pair of first bodies 101 and 201 are moved toward or away from the second body 401 has been described in the above embodiments, one first body 101 may be separated from the second body 401 ) Is also possible. Figure 35 is a schematic plan view of one embodiment of a rollerable display device. Only the support structure is shown in Fig. 35, and the roller 103 is omitted. The rolled-up display device of the present embodiment may be a hook-type device in which the second body 401 is fixed to, for example, a wall or a ceiling. A structure in which the first and second support members 6-1 and 6-2 are inserted into or withdrawn from the first body 101 and the structure in which the display 301 is inserted into or extracted from the first body 101 The structure for rotating the roller 103 is the same as that described above. One end of the display 301 is fixed to the roller 103 and the other end is fixed to the second body 401. One end of the first and second support members 6-1 and 6-2 is fixed to the second body 401.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Do.

In particular, in the embodiments of the roller-blind display device, the structure in which the display is developed while the first body moves in the lateral direction has been described as an example, but the structure may also be such that the display is developed while the first body moves in the longitudinal direction.

The scope of the present invention should, therefore, be determined not only by the details of the embodiments described, but also by the appended claims and their equivalents.

101, 201 ... First body 103, 203 ... Roller
104, 204 ... Guide rollers 151, 251 ... First storage part
152, 252 ... second receiving portion 195, 295 ... first sprocket
196, 296 ... 2nd sprocket 301 ... display
301a, 301b ... edge of display 401 ... second body
501 ... stand 6 ... support unit
6-1, 6-2 ... first and second supporting members 601 ... broken links
603, 623 ... first chain 605, 625 ... second chain
7 ... tension applying portion 60 ... rotation supporting member
61 ... Bush member 62 ... Support shaft
63 ... torsion spring 701 ... connecting member
1400, 1420 ... blocking member 1500 ... motor

Claims (32)

First and second bodies;
A display having an image display surface and a back surface;
A roller rotatably supported on the first body about a rotation axis of the display in the width direction, one end of the display in the longitudinal direction being fixed and the display being wound on the outer periphery thereof;
And a supporting member housed in a receiving portion provided in the first body so as to be rotatable in a bent state unidirectionally from a state in which a plurality of segment links are extended around a hinge axis perpendicular to the image display surface, ,
The display is unrolled from the roller as the first body is separated from the second body, is drawn out from the first body and is developed in the longitudinal direction,
Wherein the support member is pulled in the longitudinal direction from the first body as the first body is separated from the second body to support the back surface of the display. The method according to claim 1,
And the storage portion extends in the width direction. The method according to claim 1,
And a sprocket mounted on the first body so as to be rotatable about a rotation axis perpendicular to the image display surface to move the support member. The method of claim 3,
Wherein the sprocket is adapted to switch the direction of movement of the support member from the width direction to the longitudinal direction when the support member is pulled out of the first body, and to move the support member when the support member is pulled into the first body Direction in the width direction from the longitudinal direction. 5. The method of claim 4,
And the support member supports the widthwise edge of the display. 6. The method of claim 5,
Wherein the split link is provided with a rib extending beyond the edge and extending toward the image display surface. 6. The method of claim 5,
The sprocket being positioned adjacent an edge of the display,
A plurality of connecting members having a first connecting portion are provided at an edge of the display,
Wherein the plurality of segmented links are provided with a second connection part connected to the first connection part. 8. The method of claim 7,
Wherein the first connecting portion and the second connecting portion are connected to each other or disconnected when the moving direction of the plurality of segmented links is switched by the sprocket in the longitudinal direction and the width direction. 8. The method of claim 7,
The first connection portion has a protrusion shape extending in the width direction,
And the second connection portion is in a groove shape in which the first connection portion is inserted. 8. The method of claim 7,
Wherein an interval between the plurality of link members is equal to an interval between the plurality of link segments. 8. The method of claim 7,
Wherein an interval between the plurality of connecting members is an interval in which the plurality of connecting members are aligned in the radial direction of the roller at a plurality of positions in the circumferential direction of the roller when the display is wound on the roller. 12. The method of claim 11,
The connecting member is provided with a projection and a recess,
And a protrusion of a connection member located on the outside is inserted into the concave portion of the connection member located inside in the radially aligned state. 13. The method of claim 12,
The protrusion has a resilient arm,
Wherein the concave portion includes a receiving portion receiving the resilient arm and having a width smaller than the width of the resilient arm and a retaining jaw provided at the edge of the opening to receive the resilient arm,
And the resilient arms of the connecting members located on the outside in the radial alignment state are inserted into the receiving portions of the connecting members located inside. 12. The method of claim 11,
Wherein the connection member is provided with a first magnetic member and a second magnetic member,
Wherein the second magnetic member of the linking member located on the inner side and the first magnetic member of the linking member located on the outer side are attached to each other by magnetic force in the radially aligned state. 12. The method of claim 11,
Wherein the connecting member is provided with a first opposing portion and a second opposing portion,
At least one of the first and second opposing portions is provided with a friction portion,
Wherein the first opposing portion of the connecting member located on the outer side and the second opposing portion of the connecting member located on the inner side in the radially aligned state are in contact with each other. 12. The method of claim 11,
Wherein the connecting member is provided with a first opposing portion and a second opposing portion,
A slip prevention member is provided between the plurality of connection members,
Wherein the first opposing portion of the connecting member located on the outer side and the second opposing portion of the connecting member located on the inner side in the radially aligned state are in contact with each other. 5. The method of claim 4,
And the support member includes first and second support members for supporting both edges in the width direction of the display. 18. The method of claim 17,
Wherein the rotation directions of the plurality of segmented links of the first and second support members are opposite to each other. 19. The method of claim 18,
Wherein the sprocket includes first and second sprockets positioned adjacent to both edges in the width direction of the display,
A plurality of connecting members having first connecting portions are provided on both edges of the display,
Wherein the plurality of segment links of the first and second support members are provided with a second connection portion connected to the first connection portion. 20. The method of claim 19,
Wherein when the moving direction of the first and second support members is switched between the longitudinal direction and the width direction by the first and second sprockets, the first connection portion and the second connection portion are connected to each other, Display device. 20. The method of claim 19,
Wherein an interval between the plurality of connecting members is an interval in which the plurality of connecting members are aligned in the radial direction of the roller at a plurality of positions in the circumferential direction of the roller when the display is wound on the roller. 5. The method of claim 4,
Wherein the support member includes first and second support members for supporting the back surface of the display at positions spaced apart from each other in the width direction of the display,
Wherein the rotation directions of the plurality of segmented links of the first and second support members are opposite to each other. 5. The method of claim 4,
And a locking unit for locking the first body with respect to the second body at a plurality of spaced apart positions. 24. The method of claim 23,
The locking unit includes:
And a blocking member having a blocking position for blocking movement in the housing direction accommodated in the first body of the support member and an allowable permitting position. 25. The method of claim 24,
Wherein in the blocking position, the blocking member blocks the segment link located in front of the segment link bite in the sprocket from being moved in the receiving direction. 26. The method of claim 25,
And when the support member is pulled out from the first body, the blocking member interferes with the segmented link to switch from the blocking position to the permissible position. 27. The method of claim 26,
The locking unit includes:
And an elastic member for applying an elastic force to the blocking member in a direction of switching to the blocking position. 25. The method of claim 24,
The locking unit includes:
And a plurality of latching jaws provided with the sprockets,
And the blocking member blocks the sprocket from being rotated in a direction to move the supporting member in the accommodating direction by being hooked to the engaging jaw at the blocking position. 29. The method of claim 28,
And the blocking member interferes with the engaging jaw and is switched to the permitting position when the sprocket is rotated in the direction of pulling out the supporting member from the first body. 30. The method of claim 29,
The locking unit includes:
And an elastic member for applying an elastic force to the blocking member in a direction of switching to the blocking position. The method according to claim 1,
The other end of the display in the longitudinal direction is fixed to the second body,
And one end of the support member is fixed to the second body. The method according to claim 1,
The first body includes a pair of first bodies positioned on both sides of the second body in the longitudinal direction,
Wherein the roller includes a pair of rollers each provided on the pair of first bodies and to which one end and the other end of the display are fixed,
Wherein the support member is installed across the pair of first bodies, and a part of the support member is fixed to the second body.

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