Display device

Abstract

A column for supporting a display panel capable of being rolled can be rolled smoothly. A display device is provided with: a display panel that can be rolled up; the winding body is used for winding the display panel; a winding column, a first end portion of which is connected to a tail end portion of the display panel in the unwinding direction, which advances and retreats together with the display panel, and which is capable of holding the display panel at a position where the display panel is unwound from the winding body; and a bobbin to which the second end of the winding column is connected, the bobbin winding the winding column, the bobbin having: a winding shaft winding the winding column; and an outer cylinder member having an inner peripheral surface facing the outer peripheral surface of the winding shaft with a gap provided between the outer peripheral surface of the outer cylinder member and the outer peripheral surface of the winding shaft, and having an opening portion formed in a part of the outer cylinder member, the opening portion serving as an inlet / outlet of the winding column, the inner peripheral surface of the outer cylinder member being provided with an annular guide member, the annular guide is formed so that the width thereof is smaller than the width dimension of the winding column in the axial direction of the winding shaft, and the annular guide extends in the circumferential direction of the inner circumferential surface and can be in contact with the winding column.

Description

TECHNICAL FIELD

[0001] The present application relates to a display device provided with a display panel capable of being wound up. BACKGROUND

[0002] Patent Document 1 discloses a winding-type display device. The display device is provided with a support tape that becomes a column capable of being wound up, on the back of a display panel capable of being wound up. The support tape is wound up on a rotation shaft that winds up the display panel, together with the display panel.

[0003] Patent Document 1: Japanese Patent Application Laid-Open No. 2021-525400

[0004] The support tape has elasticity that becomes planar in cross section if wound up on the rotation shaft, and becomes circular arc-shaped in cross section if unwound and spread out. Therefore, there is a case where the support tape bulges out to the radially outer side direction of the outer peripheral surface of the rotation shaft when being wound up on the rotation shaft, and thus cannot be smoothly wound up on the rotation shaft. In this case, in the structure of Patent Document 1, the bulging support tape presses the display panel being wound up together, and they stick to the inner surface of the housing, and the subsequent unwinding is also likely to be unable to be smoothly performed. SUMMARY

[0005] The present application was completed in view of the problems of the above-described related art, and aims to provide a display device capable of smoothly winding up a column that supports a display panel capable of being wound up.

[0006] A display device according to an aspect of the present application includes: a display panel capable of being wound up; a winding body that winds up the display panel; a winding column that is connected to a distal end portion of the display panel in a winding direction, advances and retreats together with the display panel, and is capable of holding the display panel at a position unwound from the winding body; and a bobbin that is connected to a second end portion of the winding column and winds up the winding column, the bobbin including a winding shaft that winds up the winding column, and an outer tube member that has an inner peripheral surface facing the outer peripheral surface of the winding shaft with a gap provided between itself and the outer peripheral surface of the winding shaft, and in which an opening portion that becomes an entrance and exit of the winding column is formed in a portion, and a ring-shaped guide is provided at the inner peripheral surface of the outer tube member, the ring-shaped guide being formed to have a width dimension smaller than a width dimension of the winding column in an axial direction of the winding shaft, extend in a circumferential direction of the inner peripheral surface, and be capable of contacting the winding column.

[0007] According to the aspect of the present application, the column that supports the display panel capable of being wound up can be smoothly wound up. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1This is a perspective view of a display device according to one embodiment.

[0009] Figure 2A Viewed from the back side Figure 1 The stereoscopic view seen on the display device shown.

[0010] Figure 2B It is Figure 2A A perspective view of the display panel of the display device shown, rolled up and housed within a housing.

[0011] Figure 3 From Figure 2A The image shown is a 3D view of the display device after the cover has been removed.

[0012] Figure 4 It will be Figure 3 An enlarged three-dimensional view of the arranged tubes and their surrounding parts on the X2 side.

[0013] Figure 5 yes Figure 4 The rear view of the tube and its periphery shown.

[0014] Figure 6 This is a schematic side view of the display device.

[0015] Figure 7A It is a schematic cross-sectional view of the strip.

[0016] Figure 7B It is a schematic cross-sectional view of the winding column.

[0017] Figure 8 This is a schematic diagram illustrating the action of winding two strip plates that make up a winding column into a bobbin.

[0018] Figure 9 This indicates that the orientation of the two strip plates will be aligned with... Figure 8 The schematic rear view of the winding column winding into the bobbin in the structural example shown after the winding column is reversed.

[0019] Figure 10A It is a three-dimensional view of the tube and its surrounding parts.

[0020] Figure 10B From Figure 10A The diagram of the winding column is omitted.

[0021] Figure 11 It is a top view of the tube and its surrounding parts.

[0022] Figure 12A It is a three-dimensional sectional view of the tube and its surrounding parts.

[0023] Figure 12B It is a comparisonFigure 12A A sectional view of the bobbin and its peripheral portion at a position offset to the Zl side.

[0024] Figure 13 A back sectional view of the bobbin and its peripheral portion.

[0025] Figure 14 A perspective view of the take-up shaft and its peripheral portion constituting the bobbin.

[0026] Figure 15 A front view of a display device to which a wireless connection type electronic component unit is attached.

[0027] Figure 16A A schematic rear view of the display device shown in Figure 15

[0028] A rear view of the display device shown in Figure 16B Figure 16A A perspective view of the wiring take-up mechanism and its peripheral portion of the display device shown in

[0029] Figure 17 A perspective view of the display device shown in

[0030] Figure 18 Figure 17 A perspective view of the wiring take-up mechanism and its peripheral portion of the display device shown in

[0031] Figure 19 A side view schematically showing the structure of the spool.

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 10... display device; 12... display panel; 14... housing; 16... take-up post; 20... take-up body; 24... dead load spring; 28A, 28B... bobbin; 28a... inlet / outlet; 29... end frame; 30A, 30B... belt plate; 30a... 1st face; 30b... 2nd face; 34... take-up shaft; 36... outer tube member; 40... ring-shaped guide; 42... inlet guide; 44A, 44B... guide member; 50... drive section; 52... control substrate; 54... electric motor; 56... gear mechanism; 64, 70... electronic component unit; 65... electronic component; 68, 69... terminal section; 74... wiring; 78... spool. DETAILED DESCRIPTION

[0034] ​​The following describes a preferred embodiment of the display device according to the present application in detail with reference to the accompanying drawings. Note that the present application is not limited to the embodiment.

[0035] 1. Explanation of the overall structure of the display device

[0036] Figure 1 FIG. 1 is a perspective view of a display device 10 according to an embodiment. Figure 2A FIG. 2 is a perspective view of the display device 10 viewed from the back side. Figure 1 FIG. 3 is a perspective view of the display device 10 viewed from the front side. Figure 2B FIG. 4 is a perspective view of the display device 10 in which a display panel 12 is wound and housed in a housing 14. Figure 2A FIG. 5 is a perspective view of the display device 10 in which the cover member 14A is removed. Figure 3 FIG. 6 is a perspective view of the display device 10 in which the display panel 12 is unwound from the upper side of the housing 14. Figure 2A FIG. 7 is a perspective view of the display device 10 in which the display panel 12 is unwound from the upper side of the housing 14. Figure 1 FIG. 8 is a perspective view of the display device 10 in which the display panel 12 is unwound from the upper side of the housing 14. Figure 2A FIG. 9 is a perspective view of the display device 10 in which the display panel 12 is unwound from the upper side of the housing 14. Figure 3 FIG. 10 is a perspective view of the display device 10 in which the display panel 12 is unwound from the upper side of the housing 14.

[0037] As shown in FIG. 1, the display device 10 can include the display panel 12, the housing 14, two winding columns 16, 16, and an operation portion 18. Figures 1-3

[0038] The display device 10 can be used as an external display device that displays an image or a video output from an external device such as a personal computer, a tablet terminal, or a smartphone connected in a wired or wireless manner on a large screen. The display device 10 can also be used as a video conference system. The display device 10 can also be used as a television receiver. The display device 10 can be configured to raise and lower the display panel 12 from the upper surface 14a of the housing 14 by operating the operation portion 18 to drive a driving portion 50 described below to rotate the bobbin 28 in a forward or reverse direction. The display device 10 can also be configured to raise and lower the display panel 12 by, for example, an instruction from the external device described above instead of the operation of the operation portion 18. The display device 10 can also be configured to raise and lower the display panel 12 manually.

[0039] The display panel 12 is a paper-like flexible display panel that can be wound. The display panel 12 can be wound to and unwound from the winding body 20 housed in the housing 14. The display panel 12 can be formed of, for example, an OLED (Organic Light Emitting Diode). The display panel 12 can also be a touch panel type. The size of the display panel 12 is not limited and can be, for example, 32 inches. As shown in FIG. 1, the front surface of the display panel 12 is a display surface 12a and the back surface 12b is a non-display surface. Figure 1 ​​

[0040] Hereinafter, the display device 10 and its structural elements will be described from the viewpoint of a user observing the display surface 12a as shown in FIG. 1. Figure 1 The directions of the left and right will be referred to as X1 and X2 directions, respectively, and the directions of the top and bottom will be referred to as Y1 and Y2 directions, respectively, and the directions of the front and back (depth direction) will be referred to as Z1 and Z2 directions, respectively, with reference to the direction in which the user observes the display surface 12a as shown in FIG. 1. The X1 and X2 directions will be referred to as the X direction at times, and the Y1 and Y2 directions and the Z1 and Z2 directions will be referred to as the Y direction and the Z direction, respectively, at times.

[0041] The display device 10 can be placed on a placement surface such as a desk, a shelf, or the like, and used. The display panel 12 can be caused to be wound out, for example, to the uppermost position of the display device 10, and used. Figure 1 The display device 10 can be caused to be moved (elevated) between the use position as shown in FIG. 1 and the storage position as shown in FIG. 2. As shown in FIG. 3, the display device 10 can of course be used with the display panel 12 wound out to the uppermost position, and can also be used, for example, with the display panel 12 wound out to a position slightly lower than the uppermost position, and only a part of the display surface 12a exposed. Figure 2B As shown in FIG. 4, the display device 10 can also be used with the display panel 12 wound out to a position slightly lower than the uppermost position, and only a part of the display surface 12a exposed. Figure 1 As shown in FIG. 3, the display device 10 can of course be used with the display panel 12 wound out to the uppermost position, and can also be used, for example, with the display panel 12 wound out to a position slightly lower than the uppermost position, and only a part of the display surface 12a exposed. Figure 1 As shown in FIG. 4, the display device 10 can also be used with the display panel 12 wound out to a position slightly lower than the uppermost position, and only a part of the display surface 12a exposed.The display device 10 can also be caused to be stored, for example, with the housing 14 stored under the top plate of a desk, and caused to be used with the display panel 12 caused to be elevated from the opening formed in the top plate. The display device 10 can also be caused to be used with the bottom surface (Z2 side surface) of the housing 14 fixed to the ceiling, and the display panel 12 used in a suspended state.

[0042] As shown in FIG. 5, the housing 14 is a rectangular tubular case that is long in the X direction. The housing 14 can include a cover member 14A that forms the upper surface 14a and the four surrounding side surfaces, and a base plate 14B that forms the bottom surface. The base plate 14B supports the structural elements described below, such as the winding body 20, the tube 28, the drive section 50, and the control substrate 52, in addition to the winding body 20, at the upper surface. The cover member 14A is provided to cover the respective structural elements supported by the base plate 14B from above, and is coupled to the base plate 14B by screws, hooks, or the like. Figures 1-3 The cover member 14A can have an opening in the region of the housing 14 that forms the upper surface 14a, on the side of the back surface 12b of the display panel 12. The opening is covered by a cover plate 14C. The cover plate 14C is a maintenance opening that is detachably coupled to the cover member 14A by screwing or the like. The housing 14 can be easily maintained by detaching the cover plate 14C.

[0043] As shown in FIG. 5, the housing 14 is a rectangular tubular case that is long in the X direction. The housing 14 can include a cover member 14A that forms the upper surface 14a and the four surrounding side surfaces, and a base plate 14B that forms the bottom surface. The base plate 14B supports the structural elements described below, such as the winding body 20, the tube 28, the drive section 50, and the control substrate 52, in addition to the winding body 20, at the upper surface. The cover member 14A is provided to cover the respective structural elements supported by the base plate 14B from above, and is coupled to the base plate 14B by screws, hooks, or the like.

[0044] Figure 3As shown, the winding body 20 is arranged in the axial direction along the long side direction (X direction) of the housing 14. The axial length of the winding body 20 is slightly longer than the X direction width of the display panel 12. The winding body 20 is axially supported by support plates 22a, 22b erected near both ends of the base plate 14b. The winding body 20 is located on the Zl side of the display surface 12a of the display panel 12 unwound. The winding body 20 winds and unwinds the display panel 12 in such a manner that the display surface 12a is the inner side.

[0045] Figure 3 The reference numeral 23 in FIG. 1 is a winding guide for making the winding operation and unwinding operation of the display panel 12 relative to the winding body 20 smooth. The winding guide 23 is a wing-like member having a curved surface. The winding guide 23 is provided, for example, with a plurality of members in the width direction of the back surface 12b of the display panel 12 within the housing 14.

[0046] Figure 4 FIG. 2 is an enlarged perspective view of the bobbin 28A, 28B and the peripheral portion thereof arranged on the X2 side in FIG. 1. Figure 3 FIG. 3 is a rear view of the bobbin 28A, 28B and the peripheral portion thereof shown in FIG. 1. Figure 5 FIG. 4 is a rear view of the bobbin 28A, 28B and the peripheral portion thereof shown in FIG. 1. Figure 4 FIG. 5 is a rear view of the bobbin 28A, 28B and the peripheral portion thereof shown in FIG. 1. Figure 6 FIG. 6 is a schematic side view of the display device 10. Figure 5 The illustration of the display panel 12 is omitted. The illustration of the housing 14 and the like is omitted. Figure 6 The illustration of the housing 14 and the like is omitted.

[0047] The winding body 20 is elastically urged in the direction of winding the display panel 12, in other words, in the clockwise direction in FIG. 1. The display panel 12 receives a reaction force in the upward direction against the urging force in the winding direction (downward direction) generated by the winding body 20 from the winding column 16. Thus, the display panel 12 can be held, for example, in the use position shown in FIG. 1. Figure 6 The winding body 20 is elastically urged in the direction of winding the display panel 12, in other words, in the clockwise direction in FIG. 1. The display panel 12 receives a reaction force in the upward direction against the urging force in the winding direction (downward direction) generated by the winding body 20 from the winding column 16. Thus, the display panel 12 can be held, for example, in the use position shown in FIG. 1. Figure 1 The winding body 20 is elastically urged in the direction of winding the display panel 12, in other words, in the clockwise direction in FIG. 1. The display panel 12 receives a reaction force in the upward direction against the urging force in the winding direction (downward direction) generated by the winding body 20 from the winding column 16. Thus, the display panel 12 can be held, for example, in the use position shown in FIG. 1.

[0048] The winding body 20 is elastically urged in the direction of winding the display panel 12 by a pair of constant load springs 24, 24 connected to the left and right ends thereof, respectively. The pair of constant load springs 24, 24 are preferably constructed to be left-right symmetrical to each other, and thus, hereinafter, the description will be made in some cases without distinguishing which one of the left and right constant load springs 24, 24.

[0049] Side plates 26a, 26b parallel to the support plates 22a, 22b are erected at the left and right ends of the base plate 14b. The constant load springs 24 are axially supported between the support plates 22a, 22b and the side plates 26a, 26b. The constant load spring 24 can have an elastic belt 24a, a first pulley 24b, and a second pulley 24c. The first pulley 24b is arranged coaxially with the winding body 20. The winding body 20 is elastically urged in the direction of winding the display panel 12, in other words, in the clockwise direction in FIG. 1. The display panel 12 receives a reaction force in the upward direction against the urging force in the winding direction (downward direction) generated by the winding body 20 from the winding column 16. Thus, the display panel 12 can be held, for example, in the use position shown in FIG. 1.

[0050] The second pulley 24c has a smaller diameter than the first pulley 24b and is arranged on the Z2 side of the first pulley 24b. The elastic band 24a is a metal spring with bending elasticity, like a spiral in its natural state, and has a structure similar to a clockwork. The elastic band 24a has almost no stretching in the pulling direction. The first pulley 24b is wound in the opposite direction to the spiral direction of the elastic band 24a in its natural state. The second pulley 24c winds the elastic band 24a, which has been unwound from the first pulley 24b, in the spiral direction in its natural state. This constant-load spring 24 always exerts a constant elastic force on the first pulley 24b, regardless of the amount of elastic band 24a unwound. In other words, the constant-load spring 24 can always apply a constant load to the winding body 20 in the direction of winding the display panel 12.

[0051] Alternatively, the constant load spring 24 can be provided only at one of the left or right ends of the winding body 20. Providing the constant load spring 24 at both ends of the winding body 20 allows for the miniaturization of each constant load spring 24, contributing to the miniaturization of the housing 14. Furthermore, the winding body 20 has a considerably long axial length. Therefore, winding the winding body 20 using the constant load springs 24 at both ends also has the advantage of minimizing the risk of axial torsion.

[0052] 2. Instructions for the winding column

[0053] Next, the structure of the winding column 16 will be explained.

[0054] like Figures 2A-6 As shown, two take-up columns 16 are provided, for example, on the back side 12b of the display panel 12. The take-up columns 16 are respectively provided near the left and right ends of the display panel 12 and are capable of extending and retracting in the Z direction. The take-up columns 16 function as supports to hold the display panel 12 in its usage position after it has been unwound. The take-up columns 16 also function as drive devices for raising and lowering the display panel 12. It is preferable that the left and right take-up columns 16 are symmetrically arranged; therefore, in the following description, it will sometimes be stated without distinguishing which of the left and right take-up columns 16 is being referred to.

[0055] For the winding column 16, the first end portion 16a in the longitudinal direction is connected to the end portion 12c of the display panel 12, and the second end portion 16b is connected to the spools 28A, 28B inside the housing 14. The display panel 12 is connected to the end frame 29 at the end portion 16c in the unwinding direction from the winding body 20. The end frame 29 is a hat-shaped frame member that extends toward the back surface 12b side of the display panel 12, and is formed of metal or resin. The end frame 29 is longer in the X direction, narrower in the Z direction, and thinner in the Y direction. The first end portion 16a of the winding column 16 is fixed to the Z2 side surface of the end frame 29 by screwing or the like, and is thereby connected to the display panel 12. The spools 28A, 28B are rotating shafts that cause the winding column 16 to wind and unwind, but details will be described later.

[0056] One winding column 16 can be formed of two sets of the band-shaped plates 30A, 30B. The two band-shaped plates 30A, 30B that form one winding column 16 are preferably configured to be left-right symmetrical, and thus, hereinafter, will be sometimes collectively referred to as "band-shaped plate 30" and described.

[0057] Figure 7A is a schematic cross-sectional view of the band-shaped plate 30. Figure 7B is a schematic cross-sectional view of the winding column 16. Figure 8 is a schematic view showing the operation of winding the two band-shaped plates 30A, 30B that form one winding column 16 to the spools 28A, 28B.

[0058] As shown in Figures 3-7B , the band-shaped plate 30 is a narrow and thin plate member, and can extend in the up-down direction of the back surface 12b of the display panel 12. The band-shaped plate 30 can be formed of, for example, a structure having a cross section in the shape of a circular arc, which is called a convex surface, like a metal tape measure. The band-shaped plate 30 can be wound around the spools 28A, 28B. The band-shaped plate 30 stands up in the Y direction in the unwound state, and can hold the display panel 12 in the use position against the force in the winding direction generated by the winding body 20.

[0059] The winding column 16 can be arranged in a posture in which the width direction of each band-shaped plate 30 is formed to intersect (in this embodiment, orthogonal) with respect to the surface direction of the back surface 12b of the display panel 12. The band-shaped plate 30 is provided with a concave curved surface 30al on the first surface 30a, and a convex portion 30bl protruding toward the center in the width direction on the second surface 30b. Thus, the band-shaped plate 30 has a cross-sectional shape curved in the shape of a circular arc. The band-shaped plate 30 is deformed in compression by the curved surface 30al and the convex portion 30bl in the state of being wound around the spools 28A, 28B, and is formed in a planar shape.

[0060] As shown in Figure 7AAs shown, the arc-shaped strip 30 exhibits weak resistance to bending load F1 when bent towards the first surface 30a, but strong resistance to bending load F2 when bent towards the second surface 30b. In other words, the strip 30 is more prone to bending towards the first surface 30a and less prone to bending towards the second surface 30b. Therefore, as... Figure 4 , Figure 7B and Figure 8 As shown, the second surfaces 30b of the two strip plates 30A and 30B constituting a winding column 16 are arranged close to each other and facing each other. As a result, the winding column 16 as a whole has a roughly X-shaped cross-sectional shape, which provides high rigidity for bending loads in either the X1 or X2 direction.

[0061] Thus, the winding post 16 of this embodiment can be configured as a back-to-back structure in which the second surfaces 30b of the two strip plates 30A and 30B face each other. Therefore, as... Figure 8 As shown, the winding column 16 can smoothly wind and unwind two strip plates 30A and 30B from the gap between the symmetrically arranged bobbins 28A and 28B. Furthermore, a gap G1 is formed between the pair of strip plates 30A and 30B on their back-to-back second surfaces 30b and 30b (see reference). Figure 7B ).

[0062] like Figure 9 As shown, the two strip plates 30A and 30B constituting a single winding column 16 can also be arranged with their first surfaces 30a facing each other. In this case, the winding column 16 has a generally elliptical cross-sectional shape and exhibits high rigidity against bending loads in either the X1 or X2 direction. Figure 9 The winding column 16 shown needs to wind up each strip plate 30A and 30B from the outside of the symmetrically arranged tubes 28A and 28B. Therefore, with Figure 8 Compared to the structural example shown, for Figure 9 In the structural example shown, the overall cross-sectional area of ​​the winding column 16, including the bobbins 28A and 28B, is compared to... Figure 8 The structural example shown is larger. Furthermore, in Figure 9 In the structural example shown, a gap of the width of the transverse arrangement of the tubes 28A and 28B is required between the two strip plates 30A and 30B. Therefore, with Figure 8 Compared to the structural example shown, for Figure 9 In the example structure shown, the apparent cross-sectional area of ​​a winding column 16 is increased.

[0063] 3. Description of the tube and its surrounding parts

[0064] Next, the structure of the tubes 28A, 28B and their surrounding parts will be described.

[0065] Figure 10A is a perspective view of the tube 28A, 28B and its peripheral portion. Figure 10B is a view of the tube 28A, 28B and its peripheral portion after the winding column 16 is omitted. Figure 10A is a view of the tube 28A, 28B and its peripheral portion after the winding column 16 is omitted. Figure 11 is a plan view of the tube 28A, 28B and its peripheral portion. Figure 12A is a perspective cross-sectional view of the tube 28A, 28B and its peripheral portion. Figure 12B is a perspective cross-sectional view of the tube 28A, 28B and its peripheral portion at a position where an offset is formed toward the Zl side. Figure 12A is a back cross-sectional view of the tube 28A, 28B and its peripheral portion. Figure 13 is a back cross-sectional view of the tube 28A, 28B and its peripheral portion. Figure 14 is a perspective view of the winding shaft 34 and its peripheral portion that constitute the tube 28A, 28B. Figure 11 is a view in which the display panel 12 is omitted. Figures 12A-13 is a view that shows a cross-sectional shape obtained by cutting the tube 28A, 28B and its peripheral portion with an XY plane. Figure 12A is a view in which the winding column 16 is omitted. Figure 12B is a view in which the winding column 16 is omitted. Figure 14 is a view in which the outer tube member 36 that constitutes the tube 28A, 28B is omitted.

[0066] As shown in Figure 3 and Figure 4 , the tube 28A, 28B is used in two 1 groups for 1 winding column 16. One tube 28A can wind one band-shaped plate 30A. The other tube 28A can wind the other band-shaped plate 30B. The two tubes 28A, 28B are arranged in the X direction directly below the winding column 16 at the back surface 12b side of the display panel 12. The axial directions of the tubes 28A, 28B are respectively arranged along the Z direction. The left and right tubes 28A, 28B can also be a left-right symmetrical configuration with respect to each other, and thus, hereinafter, they are sometimes collectively referred to as "tube 28" without distinguishing which one of the left and right tubes 28A, 28B.

[0067] As shown in Figures 10A-14 , the tube 28 can have a winding shaft 34 and an outer tube member 36.

[0068] The take-up shaft 34 is a rotating shaft that winds the strip 30 onto its outer peripheral surface 34a. Regarding the take-up shaft 34, if the shaft body 34b, which is fitted at its center, is driven to rotate, the take-up shaft 34 and the shaft body 34b rotate integrally. The take-up shaft 34 is preferably formed of a self-lubricating resin (sliding material), such as polyoxymethylene (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This prevents noise and snagging during the winding of the metal strip 30 in the bobbin 28, enabling smoother winding. The shaft body 34b can be made of metal. The shaft body 34b is the central axis of the bobbin 28, axially arranged along the Z direction. The shaft body 34b rotates about the forward and reverse directions due to the drive unit 50, as detailed below.

[0069] The outer cylinder member 36 covers the outer shell of the strip 30 by enclosing it inside the outer peripheral surface 34a of the take-up shaft 34. The outer cylinder member 36 has an inner peripheral surface 36a facing the outer peripheral surface 34a with a gap G2 between itself and the outer peripheral surface 34a of the take-up shaft 34. The gap G2 needs to be of a size (interval) such that the strip 30, when wound to the take-up shaft 34 to the maximum extent, will not get stuck or fixed between the surfaces 34a and 36a. For the strip 30, the first surface 30a with the curved surface 30a1 faces the outer peripheral surface 34a of the take-up shaft 34, and the second surface 30b with the protrusion 30b1 faces the inner peripheral surface 36a of the outer cylinder member 36.

[0070] The outer cylinder member 36 has a partial opening 36b on its inner circumferential surface 36a, which extends circumferentially around the winding shaft 34. The opening 36b is located directly below the strip plate 30. The opening 36b forms an inlet / outlet 28 for the strip plate 30 to enter and exit relative to the tube 28. In the front view, the outer cylinder member 36 of this embodiment has a generally eyeglass shape and integrally encloses the winding shaft 34 of the left and right tubes 28A and 28B. Therefore, the openings 36b of the left and right tubes 28A and 28B are arranged facing each other, and the two openings 36b together form a common inlet / outlet 28a for the left and right tubes 28A and 28B. Alternatively, the outer cylinder member 36 may be formed in a cylindrical shape, and one may be provided in each of the left and right tubes 28A and 28B.

[0071] like Figures 12A-13 As shown, the outer cylinder component 36 can have an annular guide 40 and an inlet guide 42.

[0072] First, the annular guide 40 is provided so as to project toward the inner diameter direction from the inner peripheral surface 36a of the outer cylinder member 36 and extend in the circumferential direction along the inner peripheral surface 36a. The annular guide 40 is formed so as to have a width dimension in the axial direction of the winding shaft 34 that is smaller than the width dimension of the belt sheet 30. In the case where the width dimension of the belt sheet 30 is, for example, about 10 mm, the width dimension of the annular guide 40 can be, for example, about 1 mm.

[0073] The annular guide 40 contacts the belt sheet 30 wound to the winding shaft 34 in a point contact or line contact. The line contact in this case can also include a case where the contact is formed in a narrow width in a linear shape. Thus, the annular guide 40 can suppress a case where the belt sheet 30 adheres to the inner peripheral surface 36a and cannot be smoothly wound or unwound. That is, the belt sheet 30 has a property that the belt sheet 30 returns to a circular arc shape and bulges in a direction away from the outer peripheral surface 34a of the winding shaft 34 if there is no pulling force in the unwinding direction. Therefore, assuming a case where the inner peripheral surface 36a of the outer cylinder member 36 is formed by a smooth surface having the same width dimension as the width dimension of the belt sheet 30 or a relatively wider width dimension, there is a possibility that the belt sheet 30 adheres to the inner peripheral surface 36a and cannot move during winding. The annular guide 40 contacts the second surface 30b of the belt sheet 30 in a point contact or line contact, and prevents the belt sheet 30 from adhering to the inner peripheral surface 36a.

[0074] The annular guide 40 can have a concave-convex shape 40a arranged in the circumferential direction of the inner peripheral surface 36a. The concave-convex shape 40a can have a wavy shape in which convex portions 40a1 and concave portions 40a2 are alternately arranged. The annular guide 40 has the concave-convex shape 40a, and thus can contact the belt sheet 30 at the apex of each convex portion 40a1 in a point contact. Alternatively, the annular guide 40 can be formed in a narrow guide rail shape without the concave-convex shape 40a. In this case, the annular guide 40 can contact the belt sheet 30 in a line contact with the end surface of the narrow width thereof.

[0075] As Figure 12AAs shown, the annular guide 40 can be provided in a pair arranged in the width direction (Z direction) of the inner peripheral surface 36a with a gap G3 therebetween. In this case, the pair of annular guides 40, 40 can be positioned facing the both side portions in the width direction of the strip-shaped plate 30. If so, in a state where the strip-shaped plate 30 has the protrusion 30bl of the second surface 30b disposed at the gap G3, the both side portions in the width direction of the second surface 30b come into contact with the pair of annular guides 40, 40. Thus, the pair of annular guides 40, 40 can suppress the adhesion of the strip-shaped plate 30 to the inner peripheral surface 36a. Also, the pair of annular guides 40, 40 can appropriately deform the strip-shaped plate 30 wound on the winding shaft 34 by compression to correct it to be flat. The annular guide 40 can also be provided only one in the width direction of the inner peripheral surface 36a, in which case it is preferable to face the center of the second surface 30b.

[0076] Next, the lead-in guide 42 protrudes from the inner peripheral surface 36a of the outer cylinder member 36 at a position facing the opening portion 36b formed by partially discontinuing the inner peripheral surface 36a. The lead-in guide 42 is positioned on the lower side (Y2 side) of the opening portion 36b, in other words, directly below the exit / entrance 28a. The lead-in guide 42 can be provided continuously with the annular guide 40. In the case of the present embodiment, the lead-in guide 42 is provided integrally with the annular guide 40. As shown in the cross-sectional view of Fig. 6, the lead-in guide 42 is a substantially conical contact guide for smoothly leading the strip-shaped plate 30 into the gap G2 by gradually narrowing the gap G2 as it approaches the direction in which the strip-shaped plate 30 is wound on the winding shaft 34. Figure 12A As shown, when the annular guide 40 is provided in a pair with a gap G3 therebetween in the axial direction of the winding shaft 34, likewise, the lead-in guide 42 is preferably provided in a pair with a gap G3 therebetween.

[0077] The lead-in guide 42 is a substantially conical contact guide for smoothly leading the strip-shaped plate 30 into the gap G2 by gradually narrowing the gap G2 as it approaches the direction in which the strip-shaped plate 30 is wound on the winding shaft 34. The lead-in guide 42 is inclined in such a way as to trace a parabola (a second curve) from the lowermost portion (the portion located closest to the Y2 side) of the inner peripheral surface 36a of the outer cylinder member 36 toward the opening portion 36b. Thus, the width (height) of the gap G2 expands in a conical shape in such a way that the opening expands as it approaches the opening portion 36b from the lowermost portion of the inner peripheral surface 36a.

[0078] Depending on the material, shape, etc. of the strip-shaped plate 30 constituting the winding column 16, the outer cylinder member 36 can also be configured to omit the annular guide 40. In this case, the lead-in guide 42 preferably changes the curvature of the portion of the inner peripheral surface 36a of the outer cylinder member 36. Likewise, depending on the material, shape, etc. of the strip-shaped plate 30, the lead-in guide 42 can also be omitted.

[0079] Such an inlet guide 42 can prevent the strip 30 from abutting against the inner circumferential surface 36a of the outer cylinder member 36 directly below the inlet / outlet 28a (opening 36b), thus preventing smooth winding. That is, the strip 30 has the property of bulging outwards from the outer circumferential surface 34a away from the winding shaft 34, as described above. Furthermore, the strip 30 has a certain degree of curvature immediately after passing through the inlet / outlet 28a—in other words, before being compressed into a flat shape. Therefore, assuming that the gap G2 is also formed by equal narrow intervals near the inlet / outlet 28a, there is a concern that the strip 30 may abut against the inner circumferential surface 36a, preventing smooth winding. Therefore, the inlet guide 42 smoothly guides the strip 30 to the gap G2 and achieves smooth winding towards the winding shaft 34.

[0080] At this point, similar to the annular guide 40, the guide 42 is narrower than the strip 30. Therefore, the guide 42 also contacts the strip 30 via point or line contact, preventing the strip 30 from adhering to the inner circumferential surface 36a, thus making winding smoother. Furthermore, the continuous concave-convex shape 40a of the bobbin 28 to the guide 42 further facilitates smoother winding of the strip 30.

[0081] In this embodiment, the openings 36b of the left and right tubes 28A and 28B face each other, forming an inlet / outlet 28a with a larger opening. Therefore, the outer tube member 36 can be formed using the same component shared between the left and right tubes 28A and 28B. In this case, the guide members 42, 42 of the left and right tubes 28A and 28B can also be integrally formed. In other words, the guide members 42, 42 of the left and right tubes 28A and 28B can be formed in a mountain shape in the main view (see reference). Figure 13 This simplifies and miniaturizes the construction of the tubes 28A and 28B, which include the inlet guide 42.

[0082] As described above, the annular guide 40 and the guide 42 come into contact with the metal strip 30. Therefore, similar to the take-up shaft 34, the annular guide 40 and the guide 42 are preferably formed of a self-lubricating resin (sliding material), such as polyoxymethylene (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This allows for smoother winding of the metal strip 30 and prevents noise and snagging during winding.

[0083] like Figures 10A-11 As shown, the tube 28 can have guide members 44A and 44B at the inlet and outlet 28a.

[0084] The guide member 44A is a member that covers a part of the opening 28a of the band-shaped plate 30A and supports the root portion of the band-shaped plate 30A. The guide member 44B is a member that covers a part of the opening 28a of the band-shaped plate 30B and supports the root portion of the band-shaped plate 30B. The left and right guide members 44A, 44B can be left and right symmetrical configurations with respect to each other, and thus, hereinafter, they will be collectively referred to as "guide member 44" without distinguishing which one of the left and right guide members 44A, 44B.

[0085] The guide member 44 can be fixed to the outer cylinder member 36 in a manner of forming a part of the upper surface of the bobbin 28 (see FIG. 1). Figure 5 The guide member 44 can have a first guide portion 44a and a pair of second guide portions 44b, 44b. The guide member 44 can make contact with one band-shaped plate 30 in a point contact or line contact manner with the three guide portions 44A, 44B. The line contact in this case can also include a line-shaped narrow-width surface contact.

[0086] The first guide portion 44a is a protrusion provided at the inner peripheral portion on the X1 side (or the X2 side) of the opening 28a. The first guide portion 44a makes contact with the center of the first face 30a in a point contact or line contact manner in the width direction of the band-shaped plate 30. The second guides 44b are respectively provided at the inner peripheral portions on the Z1 side and the Z2 side of the opening 28a and face each other in the Z direction. The pair of second guide portions 44b, 44b make contact with both side portions of the second face 30b in the width direction of the band-shaped plate 30.

[0087] The first guide portion 44a is formed, for example, at a first member 46 fixed to the outer cylinder member 36 by a screw 48. The first member 46 is a metal block formed in a substantially triangular shape or a substantially heart shape in plan view. The second guide portions 44b are respectively formed, for example, at a pair of second members 47, 47 fixed to the outer cylinder member 36 by the screw 48. The second member 47 is a metal block formed in a substantially W-shaped in plan view. The members 46, 47 can have a vertical skirt shape extending in a direction of advance and retreat (Y direction) of the band-shaped plate 30 with respect to the opening 28a. In this case, the guide portions 44A, 44B make contact with the band-shaped plate 30 in a line along the long side direction of the band-shaped plate 30. Alternatively, the guide portions 44A, 44B can be configured to protrude in a conical shape (tapered shape) from the members 46, 47 to make point contact with the band-shaped plate 30.

[0088] The guide member 44 supports the root portion of the strip 30. As a result, since the strip 30 is supported by the guide member 44 at its root portion, which is prone to swaying when supporting the display panel 12 in its usage position, the support stability of the display panel 12 is further improved. Furthermore, the guide member 44 can correct the root portion of the strip 30, which has just been unwound from the bobbin 28 and has been flattened after being deformed, into an arc shape. Therefore, since the strip 30 is formed into an arc shape that is not easily bent up to its root portion, the stability of the strip 30 in its unwound state is further improved.

[0089] In this embodiment, the openings 36b of the left and right tubes 28A and 28B face each other, forming an inlet / outlet 28a with a larger opening. The guide members 44A and 44B have an integral, approximately X-shaped through-hole capable of simultaneously supporting the two strip plates 30A and 30B passing through this hole. For example, the second member 47 is shared by the left and right guide members 44A and 44B. In other words, in this embodiment, the second guide portion 44b supporting the two sides of the two strip plates 30A and 30B in the width direction is formed as a single component (the second member 47). Therefore, the guide members 44A and 44B can more accurately set the relative positional relationship of the two strip plates 30A and 30B, improving the straightness and stability of the winding column 16 with the two strip plates 30A and 30B arranged back-to-back.

[0090] As described above, the guide member 44 contacts the metal strip 30. Therefore, similar to the take-up shaft 34 and the annular guide 40, the guide member 44 is preferably made of a self-lubricating resin (sliding material), such as polyoxymethylene (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This reduces the sliding resistance of the metal strip 30, suppressing noise generation and snagging during winding and unwinding.

[0091] like Figure 13 and Figure 14 As shown, the winding shaft 34 of the bobbin 28 can be configured to have a D-cut shape with a flat surface 34a1 in a portion of the outer peripheral surface 34a.

[0092] The flat surface 34a1 can be stably and surely fixed to the second end portion 16b of the band-shaped plate 30 by the screw 49. The flat surface 34a1 can be covered by a circular arc block 34a2 having a substantially crescent shape identical to the shape of a residual portion obtained by cutting out the flat surface 34a1 after the band-shaped plate 30 is fixed. The circular arc block 34a2 can be fastened to the band-shaped plate 30 by the screw 49. Thus, the winding shaft 34 can more stably link the band-shaped plate 30. Further, the winding shaft 34 can more surely deform the curved shape of the band-shaped plate 30 to be wound into a flat shape.

[0093] 4. Description of driving section

[0094] Next, the structure of a driving section 50 that rotationally drives the bobbin 28A, 28B to advance and retract the winding column 16, thereby raising and lowering the display panel 12, will be described.

[0095] As shown in FIG. 6, the driving section 50 can include a control substrate 52, a motor 54, and a gear mechanism 56. Figures 3-5 The control substrate 52 constitutes a control section that controls the display device 10. The control substrate 52 has various electronic components such as a memory, a power supply component, and the like mounted thereon in addition to a CPU. The control substrate 52 can receive an operation signal from the operation section 18 to rotationally drive the motor 54. The control substrate 52 is connected to an external power supply via a power supply line 58 (see FIG. 6) connected to a predetermined power supply unit. The motor 54 is a motor that can rotate in a forward direction and a reverse direction. The motor 54 can rotationally drive the bobbin 28 via the gear mechanism 56 under the control of the control substrate 52 that has received an operation signal from the operation section 18 to raise and lower the winding column 16.

[0096] Figure 2A The gear mechanism 56 transmits the driving force of the motor 54 to the bobbin 28. The gear mechanism 56 can have a gear set 60 engaged with an output shaft of the motor 54 and a gear shaft body 62 engaged with the gear set 60. The gear set 60 is a speed reducer that engages a plurality of gears to reduce the output of the motor 54 and transmit the output to the gear shaft body 62 to rotate the gear shaft body 62.

[0097] The gear mechanism 56 transmits the driving force of the motor 54 to the bobbin 28. The gear mechanism 56 can have a gear set 60 engaged with an output shaft of the motor 54 and a gear shaft body 62 engaged with the gear set 60. The gear set 60 is a speed reducer that engages a plurality of gears to reduce the output of the motor 54 and transmit the output to the gear shaft body 62 to rotate the gear shaft body 62.

[0098] ​The gear shaft 62 can have a metal shaft 62a extending substantially its entire length in the X direction across the housing 14 and a plurality of gears 62b, 62c, and 62d externally mounted on the metal shaft 62a. The metal shaft 62a is supported by a plurality of bearing portions 62e erected on the base plate 14B and arranged in the X direction, and is rotatable about its axis. The metal shaft 62a extends through the Z2 side of each cylinder 28. The gear 62b meshes with the gear set 60. The gear 62b is a drive gear that receives the output of the electric motor 54, which is reduced in speed by the gear set 60, and rotates the metal shaft 62a. The gears 62c and 62d are located near the shaft 34b of the cylinders 28A and 28B, respectively. The gears 62c and 62d are bevel gears that rotate about the axis of the metal shaft 62a. Each tube 28 has a bevel gear 34c fitted at the Z2 side end of the shaft 34b, which rotates around the axis of the shaft 34b. Gears 62c and 62d mesh with the bevel gears 34c of each shaft 34b, transmitting the rotation of the metal shaft 62a to the shaft 34b, thereby causing the tube 28 to rotate.

[0099] Next, an example of the operation of the display device 10 formed by the drive unit 50 will be described.

[0100] If the display device 10 is in the display panel 12 Figure 2B When the device receives a connection operation from the operation unit 18 in the shown stowed position, the electric motor 54 rotates in one direction under the control of the control board 52, causing the bobbin 28 to rotate in the unwinding direction via the gear mechanism 56. As a result, the take-up column 16 unwinds from the bobbin 28. The take-up column 16, unwound from the bobbin 28, gradually rises from the upper surface 14a of the housing 14. At this time, the take-up column 16 pushes the display panel 12 in the Y1 direction against the force generated by the take-up body 20 in the Y2 direction.

[0101] For example, if display panel 12 becomes Figure 2A When the position shown is reached, the rotation of the electric motor 54 stops. At this time, the take-up column 16 is held in place by the meshing resistance of the gears constituting the gear mechanism 56. Figure 2AAs shown in the raised position, it is thus stably erected in the Y direction. Therefore, the flexible display panel 12 is securely held in the use position by the take-up column 16, enabling the display of desired images and pictures. Furthermore, in this state, the display panel 12 is constantly subjected to force in the take-up direction (Y2 direction) by the take-up body 20. In other words, the take-up column 16 provides a reaction force in the Y1 direction to the end portion 12c of the display panel 12, which is generated to counteract the force from the take-up body 20 in the Y2 direction. Therefore, for the display panel 12 in the use position, due to the balance between the downward pulling force on the lower end from the take-up body 20 and the upward pushing force on the upper end by the take-up column 16, the display surface 12a can be formed into a uniform plane that does not flex or deform.

[0102] If the display device 10 is in the display panel 12 Figure 2A When a closing operation is received from the operation unit 18 in the indicated usage position, the electric motor 54 is rotated in another direction under the control of the control board 52, causing the bobbin 28 to rotate in the winding direction via the gear mechanism 56. As a result, the take-up column 16 is wound onto the bobbin 28. The take-up column 16, wound by the bobbin 28, is gradually guided into the housing 14. At this time, the take-up column 16 is also subjected to a force in the Y2 direction generated by the take-up body 20, thus enabling the display panel 12 to be wound up with significantly reduced drive power to the electric motor 54.

[0103] If the display panel 12 becomes Figure 2B When the device is in the storage position shown, the rotation of the electric motor 54 stops. In this state, the display device 10 is miniaturized because the display panel 12 and the winding post 16 are housed in the rod-shaped housing 14, making storage and transportation easier.

[0104] 5. Explanation of the function and effect of the display device

[0105] Next, the effects of such a display device 10 will be explained.

[0106] The display device 10 of this embodiment can include: a display panel 12 capable of being wound up; a winding body 20 that winds up the display panel 12; a winding post 16, the first end 16a of which is connected to the end portion 12c of the display panel 12 in the unwinding direction and moves forward and backward together with the display panel 12, and is capable of holding the display panel 12 in a position where it is unwound from the winding body 20; and a bobbin 28 that is connected to the second end 16b of the winding post 16 and winds up the winding post 16.

[0107] Thus, the display device 10 of the present embodiment is provided with the winding column 16 that can be wound onto the bobbin 28, and serves as a support column that supports the display panel 12 that can be wound. Therefore, the display device 10 can support the display panel 12 without using a large link mechanism such as a pantograph structure, and can achieve miniaturization and weight reduction of the entire device. Further, the display device 10 can support the display panel 12 with a simple winding column 16. Therefore, for the display device 10, a small component can also be used for the electric motor 54 that drives the winding column 16 (bobbin 28), and power saving can also be achieved.

[0108] The winding column 16 is wound onto the bobbin 28 that is different from the winding body 20 of the display panel 12. Thus, the display device 10 can join the display panel 12 and the winding column 16 to each other by fixing the first end portion 16a of the winding column 16 to the tip frame 29 after the display panel 12 and the winding column 16 are assembled separately in the housing 14. Therefore, the display device 10 is improved in assembly and maintenance.

[0109] The winding column 16 can have a pair of band plates 30A, 30B that have a concave curved surface 30al provided on a first surface 30a and a convex portion 30bl provided on a second surface 30b. The display device 10 can achieve further miniaturization and weight reduction by configuring the winding column 16 with the band plates 30A, 30B.

[0110] At this time, the first surfaces 30a or the second surfaces 30b of the pair of band plates 30A, 30B are arranged facing each other. That is, the band plate 30 that has a circular arc-like cross-sectional shape has a property of being easily bent with respect to a bending load Fl toward the side of the first surface 30a on which the curved surface 30al is formed, and not easily bent with respect to a bending load F2 toward the side of the second surface 30b on which the convex portion 30bl is formed. Therefore, the winding column 16 arranges the two band plates 30A, 30B to be left-right symmetrical with respect to each other. Thus, the winding column 16 can not only ensure high rigidity in the width direction (Z direction) of the band plate 30, but also ensure high rigidity with respect to bending in the Xl direction and the X2 direction. As a result, the winding column 16 can support the display panel 12 with high stability.

[0111] Further, it can also be that the two band plates 30A, 30B that configure the winding column 16 are arranged at a large interval from each other. For example, the winding column 16 on the Xl side shown in FIG. 6 can be configured only with the band plate 30A Figure 2A and the winding column 16 on the X2 side shown in FIG. 7 can be configured only with the band plate 30B Figure 2AThe winding column 16 is shown on the X2 side. In this case, the winding column 16 is also able to support the display panel 12 with high stability by the folding characteristics of the two band plates 30A, 30B. Among them, it is preferable that the two band plates 30A, 30B that make up one winding column 16 are arranged close to each other. In this way, it is possible to prevent the hand, the surrounding member from mistakenly entering between the band plates 30A, 30B, and contacting one of the band plates 30A, 30B to cause it to bend.

[0112] The winding column 16 is able to be arranged on the back surface 12b side of the display panel 12 in a posture in which the width direction of the pair of band plates 30A, 30B intersects the surface direction of the display panel 12. Thereby, when viewed from the front surface of the display device 10, the winding column 16 is not conspicuous, and the appearance quality of the display device 10 is improved (see FIG. 1). Figure 1 In addition, it is possible to arrange the spools 28A, 28B of the winding band plates 30A, 30B in the X direction on the back surface 12b side, and thus, it is possible to reduce the Z direction size of the housing 14. Also, compared to a case in which the band plates 30A, 30B are arranged, for example, on the left and right side surfaces of the display panel 12, it is possible to reduce the X direction length of the housing 14, and this also contributes to the narrowness of the frame width of the display panel 12.

[0113] The display device 10 is able to be provided with a constant load spring 24 that exerts a force on the winding body 20 in the direction in which the display panel 12 is wound, a motor 54 that rotates the spool 28 at least in the direction in which the winding column 16 is fed out, and a gear mechanism 56 that transmits the driving force of the motor 54 to the spool 28. In this way, the force generated by the winding body 20 and the reaction force generated by the winding column 16 are balanced, and thus, the stability of the display panel 12 at the use position is improved. In addition, the winding column 16 (display panel 12) is able to be held in the raised position by the meshing resistance of the gear mechanism 56, and thus, the load on the motor 54 is reduced, and it is possible to achieve the miniaturization thereof.

[0114] That is, the display device 10 does not need to hold the winding column 16 that holds the display panel 12 by a mechanical locking mechanism. Thus, in the case where the display panel 12 in the use position receives a force that is forcibly pressed down or the like, if a load above a predetermined load is received, the gear mechanism 56 is forcibly driven, and the display panel 12 is lowered. Thus, the display device 10 avoids the winding column 16, the display panel 12 from being broken by an undesirable load.

[0115] The display device 10 of the present embodiment can include a display panel 12 that can be wound, a winding body 20 that winds the display panel 12, a winding column 16 that advances and retreats with the display panel 12 and can hold the display panel 12 at a position unwound from the winding body 20, and a bobbin 28 that winds the winding column 16. The winding column 16 can include a belt-shaped plate 30 having a cross-sectional shape curved in a circular arc shape by having a concave curved surface 30al on a first surface 30a and a convex portion 30bl on a second surface 30b. Further, the display device 10 can include a guide member 44 provided at an entrance 28a through which the belt-shaped plate 30 advances and retreats with respect to the bobbin 28. The guide member 44 corrects the belt-shaped plate 30 to have a cross-sectional shape curved in a circular arc shape by making point contact with the first surface 30a and the second surface 30b of the belt-shaped plate 30 or making line contact with the first surface 30a and the second surface 30b of the belt-shaped plate 30 in a longitudinal direction of the belt-shaped plate 30.

[0116] For the display device 10, the guide member 44 makes point contact or line contact with the root portion of the belt-shaped plate 30 constituting the winding column 16 unwound from the entrance 28a of the bobbin 28. Thus, the winding column 16 is further stabilized in support of the display panel 12 because the root portion of the belt-shaped plate 30 is supported by the guide member 44. Further, the guide member 44 corrects the root portion of the belt-shaped plate 30 immediately after being unwound from the bobbin 28 to have a circular arc shape. Thus, the winding column 16 is formed to have a circular arc shape in which the entire length of the belt-shaped plate 30 including the root portion in the standing direction is less likely to be bent, and thus is further stabilized in the unwound state.

[0117] The guide member 44 can include a first guide portion 44a making contact with the center of the first surface 30a in a width direction of the belt-shaped plate 30 and a pair of second guide portions 44b and 44b making contact with both side portions of the second surface 30b. Thus, the guide member 44 further stabilizes the support of the belt-shaped plate 30 and can more effectively correct the belt-shaped plate 30 to have a circular arc shape.

[0118] The display device 10 of this embodiment can include: a retractable display panel 12; a take-up body 20 that takes up the display panel 12; a take-up column 16 that moves forward and backward with the display panel 12 and can hold the display panel 12 in a position where it is unwound from the take-up body 20; and a spool 28 that takes up the take-up column 16. The spool 28 can include: a take-up shaft 34 that takes up the take-up column 16; and an outer spool member 36 that has an inner circumferential surface 36a that faces the outer circumferential surface 34a of the take-up shaft 34 at a gap G2, and has a portion of an opening 36b that serves as an inlet / outlet 28a for the take-up column 16. An annular guide 40 can be provided on the inner circumferential surface 36a of the outer cylinder member 36. The annular guide 40 is formed to be narrower than the width dimension of the take-up column 16 along the axial direction of the take-up shaft 34, and extends circumferentially along the inner circumferential surface 36a and can contact the take-up column 16.

[0119] For such a display device 10, the take-up column 16 contacts the annular guide 40, which is narrower than the inner circumferential surface 36a of the outer cylinder member 36, when it is wound into the bobbin 28, thus preventing the take-up column 16 from adhering to the inner circumferential surface 36a. As a result, the bobbin 28 can be wound and unwound more smoothly.

[0120] The display device 10 of this embodiment can be provided with an inlet guide 42 at the opening 36b of the outer cylinder member 36 constituting the cylinder 28. The inlet guide 42 guides the winding post 16 into the gap G2 by gradually narrowing the gap G2 toward the winding post 16 being wound onto the winding shaft 34.

[0121] When the take-up column 16 is wound onto the bobbin 28, the display device 10 ensures that the take-up column 16, which has just passed through the inlet / outlet 28a, is wound along the guide guide 42, thus preventing the take-up column 16 from hooking onto the inner circumferential surface 36a of the outer cylinder member 36. As a result, the bobbin 28 can wind the take-up column 16 more smoothly.

[0122] 6. Description of wireless connectivity electronic component units

[0123] Next, the structure of the wireless connection type electronic component unit 64 and the display device 10 on which the electronic component unit 64 is installed will be described.

[0124] Figure 15 This is a front view of the display device 10, which is equipped with electronic component unit 64. Figure 16A yes Figure 15 A schematic rear view of the display device 10 shown. Figure 16B It is Figure 16A The rear view of the display panel 12 of the display device 10 shown is rolled up and housed within the housing 14.

[0125] like Figures 15-16B As shown, the display device 10 can have an electronic component unit 64 installed at the end portion 12c of the display panel 12. The electronic component unit 64 is a functional unit that can add various functions to the display device 10. The electronic component unit 64 can have a unit housing 64a, electronic components 65, a substrate 66, a secondary battery 67, and a terminal portion 68.

[0126] The unit housing 64a is a rod-shaped box made of resin or metal. The unit housing 64a has a compact shape that allows it to be mounted on the upper surface of the end frame 29. The unit housing 64a can be fixed to the end frame 29 by means of, for example, screws or magnets. The unit housing 64a can also be fixed to the lower surface of the end frame 29 on the back side 12b of the display panel 12. Alternatively, the unit housing 64a can be integrally formed with the end frame 29. In this case, for example, it is preferable to provide a box-shaped portion bulging towards the back side 12b of the display panel 12 on the lower surface side of the end frame 29, and to house electronic components 65, etc., therein.

[0127] Electronic component 65, substrate 66, and secondary battery 67 are housed within unit housing 64a. Examples of electronic component 65 include a web camera, IR camera, microphone, speaker, TOF (Time of Flight) sensor, touch sensor, or LED light. Electronic component unit 64 can house one or more of these electronic components 65. In this embodiment, electronic component 65 is, for example, a web camera capable of being used for web conferencing, with lens 65a facing the Z1 side surface of unit housing 64a. When using an IR camera or TOF sensor as electronic component 65, the display device 10 can, for example, utilize a device for... Figure 16B The trigger for raising the display panel 12 at the storage position shown. When the display device 10 uses a touch sensor as an electronic component 65, it can utilize the trigger for raising and lowering the display panel 12 and the operating mechanism for performing various control actions.

[0128] The substrate 66 is the control substrate of the electronic component unit 64. A communication module 67a is mounted on the substrate 66. The communication module 67a is a small communication terminal corresponding to a predetermined wireless communication standard. Examples of the communication standard for the communication module 67a include Bluetooth (registered trademark) or wireless LAN. The communication module 67a is capable of wireless communication with a predetermined communication module mounted on the control substrate 52 housed within the housing 14.

[0129] The secondary battery 67 is, for example, a lithium-ion battery. The electronic component unit 64 is disposed at the end portion 12c of the roll-up display panel 12. This electronic component unit 64 does not have wiring on the housing 14 side. Therefore, the electronic component unit 64 is equipped with the secondary battery 67 as its power source.

[0130] The terminal portion (first terminal portion) 68 has a plurality of terminal pins 66a protruding from the lower surface of the unit housing 64a. The terminal pins 66a are arranged along the X direction on the back side 12b of the display panel 12. The terminal pins 66a are movable along the Y direction. In this case, it is preferable that the terminal pins 66a are always elastically applied in the contact direction, i.e., the Y2 direction, toward contact with the object side (terminal portion 69). The terminal pins 66a can be, for example, made of spring pins. The terminal pins 66a are electrically connected to the substrate 66.

[0131] On the upper surface 14a of the housing 14, the terminal portion (second terminal portion) 69 faces directly below the terminal portion 68. The terminal portion 69, for example, has multiple metal pads 69a for contact and connection with terminal pins 66a. The metal pads 69a are positioned flush with or slightly recessed from the upper surface 14a. The metal pads 69a are electrically connected to the control board 52 housed within the housing 14. Alternatively, the terminal portion 68 on the unit housing 64a side may be formed by multiple metal pads, and the terminal portion 69 on the housing 14 side may be formed by terminal pins.

[0132] like Figure 16B As shown, at least when the display panel 12 is wound to its maximum extent toward the winding body 20 (the storage position), the terminal portion 68 and the terminal portion 69 are in contact with each other. Furthermore, in the storage position, the electronic component unit 64 is configured such that the unit housing 64a is placed on the upper surface 14a of the housing 14, and for example, the lens 65a is in a usable state.

[0133] Such electronic component unit 64 is capable of Figure 16B The secondary battery 67 is charged at the storage position shown via interconnected terminals 68 and 69. In other words, terminals 68 and 69 preferably include charging terminals. At this time, the electronic component unit 64 is substantially wired to the control board 52 via the terminals 68 and 69. Therefore, when using an IR camera or a TOF sensor as the electronic component 65, for example, user identification and facial authentication can be performed using the good communication quality obtained based on the wired connection. Thus, the electronic component unit 64 can, for example, utilize a trigger to raise the display panel 12 when it is in the storage position. Furthermore, the same control can be performed when a touch sensor is used for the electronic component 65.

[0134] The display device 10 can mount the electronic component unit 64 in which the electronic component 65 such as a camera is mounted as described above, and thus UX (User eXperience) is improved. The electronic component unit 64 is connected to the control substrate 52 in a wireless manner. Thus, the display device 10 can provide the electronic component 65 such as a camera at the end portion 12c of the rollable display panel 12, and thus general usability is improved. The electronic component unit 64 has a terminal portion 68 that can contact a terminal portion 69 provided at one face (the upper face 14a) of the housing 14. Thus, the electronic component unit 64 can smoothly perform charging of the built-in secondary battery 67 at a storage position of the display device 10 without using the display device 10.

[0135] However, the display device 10 is required to have a high load on the initial operation when the display panel 12 in the storage position shown in FIG. 1 is raised to the use position shown in FIG. 2 for a driving force required for raising the roll column 16 by the bobbin 28. In this regard, the terminal portion 68 (or 67) of the display device 10 in which the electronic component unit 64 is mounted is formed of a terminal pin (spring pin) 66a that is elastically biased toward the Y2 direction. Thus, the terminal pin 66a can supplement the initial driving force required for raising the display panel 12 by the elastic force thereof. Thus, the display device 10 can more suppress the output of the electric motor 54 to achieve downsizing, and can achieve downsizing, weight reduction, and power saving of the device. Figure 16B Figure 16A However, the display device 10 is required to have a high load on the initial operation when the display panel 12 in the storage position shown in FIG. 1 is raised to the use position shown in FIG. 2 for a driving force required for raising the roll column 16 by the bobbin 28. In this regard, the terminal portion 68 (or 67) of the display device 10 in which the electronic component unit 64 is mounted is formed of a terminal pin (spring pin) 66a that is elastically biased toward the Y2 direction. Thus, the terminal pin 66a can supplement the initial driving force required for raising the display panel 12 by the elastic force thereof. Thus, the display device 10 can more suppress the output of the electric motor 54 to achieve downsizing, and can achieve downsizing, weight reduction, and power saving of the device.

[0136] 7. Description of the Electronic Component Unit of the Wired Connection Type

[0137] Next, the structure of the electronic component unit 70 of the wired connection type and the display device 10 in which the electronic component unit 70 is mounted will be described.

[0138] Figure 17 is a perspective view of the display device 10 in which the electronic component unit 70 is mounted, as viewed from the back face side. Figure 18 is an enlarged perspective view of the wiring roll mechanism 76 and the periphery thereof of the display device 10 shown in FIG. 6. Figure 17 is a side view that schematically shows the structure of the spool 78. Figure 19 is a side view that schematically shows the structure of the spool 78. Figure 17 and Figure 18 In FIGS. 8A and 8B, the illustration of the 2nd pulley 24c, the driving portion 50, and the like that constitute the constant load spring 24 is omitted.

[0139] Figures 15-16B The electronic component unit 64 shown in FIG. 7 is of the wireless connection type. In contrast to this, the electronic component unit 70 shown in FIG. 8 is of the wired connection type. Figure 17 and Figure 18 ​The illustrated electronic component unit 70 is a wired connection type connected to the control board 52 via a wired connection. Except for the wired connection to the control board 52, the structure of the electronic component unit 70 can be substantially the same as or similar to that of the electronic component unit 64. The electronic component unit 70 has a unit housing 70a. The unit housing 70a, for example, houses the electronic component 65 and the board 66.

[0140] Electronic component unit 70 is connected to control board 52 via wiring 74. Wiring 74 is a thin and flexible narrow strip wiring, for example, it can be made of FPC (Flexible Printed Circuits) or FFC (Flexible Flat Cable).

[0141] Wiring 74 passes through the back 12b side of the display panel 12 to connect the electronic component unit 70 to the control board 52. One end of wiring 74 is connected to the lower surface side of the unit housing 70a and to the board 66. Wiring 74 extends in the X2 direction from the lower surface side of the end frame 29 from the unit housing 70a, for example, and is inserted into the gap G1 of the take-up post 16 on the X2 side (see also...). Figure 7B The wiring 74 extends along the take-up column 16 in the Y2 direction by passing through the gap G1, and is guided from the inlet / outlet 28a into the gap inside the bobbin 28. After passing under the outer cylinder member 36, the wiring 74 is connected to the control base plate 52 via the wiring take-up mechanism 76.

[0142] The wiring rewinding mechanism 76 can have a bobbin 78 and a deflection prevention device 79.

[0143] like Figure 18 and Figure 19 As shown, the spool 78 can have a large-diameter portion 78a, a small-diameter portion 78b, and an elastic body 78c. The large-diameter portion 78a is a circular plate that can rotate about a central axis 78d extending in the Z direction. A wire 74 passing through the bobbin 28 is wound around the outer circumference of the large-diameter portion 78a. The elastic body 78c is enclosed inside the large-diameter portion 78a, in other words, around the central axis 78d. The elastic body 78c exerts a rotational force on the spool 78 in the direction (X1 direction) that pulls the wire 74 through the bobbin 28 closer. In other words, the spool 78 is always subjected to a force that pulls the wire 74 closer to the bobbin 28. Figure 18 The force is applied in a counterclockwise direction, always applying force in the winding direction to the wiring 74 that passes through the winding post 16.

[0144] The small-diameter portion 78b is a circular plate integrally and coaxially disposed with the large-diameter portion 78a on the Z2 side. The small-diameter portion 78b and the large-diameter portion 78a rotate together about the central axis 78d. A wiring 74, which is wound around the outer peripheral surface of the large-diameter portion 78a, is wound onto the outer peripheral surface of the small-diameter portion 78b. The wiring 74 wound onto the small-diameter portion 78b is guided to the deflection prevention device 79.

[0145] The deflection prevention device 79 is a device that absorbs the deflection (redundancy) of the wiring 74 between the small-diameter portion 78b and the control substrate 52. The deflection prevention device 79 may include, for example, a spool 79a for winding the wiring 74 and a folded portion 79b for reversing the wiring 74 into a U-shape. As described below, the redundancy of the wiring 74 between the small-diameter portion 78b and the control substrate 52 is significantly less than the redundancy of the wiring 74 between the large-diameter portion 78a and the electronic component unit 70. Therefore, the deflection prevention device 79 may be omitted.

[0146] like Figure 19 As shown, the outer diameter of the outer circumferential surface of the large-diameter portion 78a is called the winding diameter D1, and the outer diameter of the outer circumferential surface of the small-diameter portion 78b is called the winding diameter D2. In this case, the winding diameter D2 is significantly smaller than the winding diameter D1. For example, the winding diameter D2 can be set to about 20% of the winding diameter D1. Therefore, if the spool 78 rotates, the large-diameter portion 78a can be wound up with a smaller number of turns (e.g., 3 to 4 turns). Figure 17 The display panel 12 shown has wiring 74 with a Y-direction height of approximately 50 cm. At this time, the small-diameter portion 78b and the large-diameter portion 78a rotate simultaneously. However, the unwinding distance (feed-out distance) of the wiring 74 from the small-diameter portion 78b to the deflection prevention device 79 becomes the distance obtained by multiplying the winding distance of the large-diameter portion 78a by "wind diameter D2 / wind diameter D1". Therefore, the length of the wiring 74 between the small-diameter portion 78b and the deflection prevention device 79 is sufficiently small, and even assuming the deflection prevention device 79 is omitted, the possibility of the remaining wiring 74 becoming tangled within the housing 14 can be suppressed.

[0147] The display device 10 can thus mount an electronic component unit 70, which includes electronic components 65 such as a camera, thereby improving the user experience (UX). The wiring 74 of the electronic component unit 70 to the control board 52 is arranged along the take-up post 16. This prevents the wiring 74 from being visually conspicuous or obstructive, and allows the display device 10 to reliably connect the electronic component unit 70 to the control board 52. Furthermore, the wiring 74 is less noticeable because it passes through the gap G1 in the take-up post 16. Moreover, the wiring 74 passing through the gap G1 allows it to be smoothly wound and unwound to the spool 78 along with the rising and falling take-up post 16.

[0148] The present application is not limited to the above-described embodiments, and it is needless to say that modifications can be made freely within the scope that does not depart from the gist of the present application.

Claims

1. A display device, characterized in that, have: The display panel is rollable; A take-up body that takes up the display panel; A take-up column, the first end of which is connected to the end portion of the display panel in the unwinding direction, moves forward and backward together with the display panel, and is capable of holding the display panel in the position where it is unwound from the take-up body; and A bobbin, which is connected to the second end of the take-up column and winds up the take-up column. The tube has: A take-up spool that takes up the take-up column; and The outer cylinder component has an inner circumferential surface facing the outer circumferential surface of the take-up shaft, with a gap between itself and the outer circumferential surface of the take-up shaft, and a portion thereof is formed locally to serve as the inlet and outlet of the take-up column. An annular guide is provided on the inner circumferential surface of the outer cylinder member. The annular guide is formed such that its width is smaller than the width dimension of the take-up column along the axial direction of the take-up shaft, extends circumferentially on the inner circumferential surface, and is able to contact the take-up column.

2. The display device according to claim 1, characterized in that, The annular guide has a concave-convex shape arranged circumferentially along the inner circumferential surface.

3. The display device according to claim 1 or 2, characterized in that, The winding column has a strip plate, which has a cross-sectional shape that is curved in an arc shape by having a concave curved surface on a first surface and a convex portion on a second surface. For the strip plate, the first surface faces the outer peripheral surface of the winding shaft, and the second surface faces the inner peripheral surface of the outer cylinder component.

4. The display device according to claim 3, characterized in that, A pair of annular guides are provided spaced apart along the axial direction of the take-up shaft. In the width direction of the strip plate, the pair of annular guides are positioned facing the two sides of the second surface.

5. The display device according to claim 3, characterized in that, When the strip is wound into the tube, the curved surface and the protrusion are deformed by pressure to form a planar shape.

6. The display device according to claim 5, characterized in that, The outer circumferential surface of the take-up shaft has a flat surface in some areas. The second end of the strip plate is fixed to the flat surface.

7. The display device according to claim 1, characterized in that, The winding column is made of metal. The annular guide is formed of a self-lubricating resin.

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