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 and which advances and retreats together with the display panel, the winding column being 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 opposite to the outer peripheral surface of the winding shaft with a gap between the outer peripheral surface of the outer cylinder member and the outer peripheral surface of the winding shaft, and having an opening part which is partially formed as an inlet / outlet of the winding column, the opening part of the outer cylinder member being provided with a lead-in guide. The introduction guide introduces the winding column into the gap by gradually narrowing the gap in a direction in which the winding column is wound up to the winding shaft.

Description

Technical Field

[0001] The present invention relates to a display device having a retractable display panel. Background Technology

[0002] Patent Document 1 discloses a rollable display device. This display device has a support strip that serves as a rollable post on the back of a rollable display panel. The support strip is wound together with the display panel onto a rotation axis that winds the display panel.

[0003] Patent Document 1: Japanese Patent Publication No. 2021-525400

[0004] The support strip has the elasticity to have a planar cross-section when wound around a rotating shaft and an arc-shaped cross-section when unwound. Therefore, there is a situation where the support strip cannot be wound smoothly when it is being wound towards the rotating shaft because its guide portion hooks onto the outer cylinder member that covers the rotating shaft from all sides. In this case, the winding of the support strip requires torque, necessitating a larger motor (actuator). Furthermore, there is also the issue of noise generated if the support strip hooks; therefore, smooth winding is required. Summary of the Invention

[0005] The present invention was made in view of the problems of the prior art described above, and its object is to provide a display device that can be smoothly wound onto a column supporting a retractable display panel.

[0006] One aspect of the present invention relates to a display device comprising: a display panel capable of being wound up; a winding body for winding the display panel; a winding post having a first end connected to an end portion of the display panel in the unwinding direction, moving forward and backward together with the display panel, and capable of holding the display panel in a position unwound from the winding body; and a spool having a second end connected to the winding post and for winding the winding post, the spool having: a winding shaft for winding the winding post; and an outer spool member having an inner spool surface facing the outer spool surface with a gap between itself and the outer spool surface, and having a portion of which an opening is formed as an inlet / outlet of the winding post, an inlet guide member being provided at the opening of the outer spool member, the inlet guide member guiding the winding post into the gap by gradually narrowing the gap as the winding post tends to be wound toward the winding shaft.

[0007] According to the above-described method of the present invention, the column supporting the retractable display panel can be smoothly wound up. Attached Figure Description

[0008] Figure 1 This 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 has been 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 comparison Figure 12AA three-dimensional cross-sectional view of the tube and its surrounding area at the position offset towards Z1.

[0024] Figure 13 It is a sectional view of the back of the tube and its surrounding parts.

[0025] Figure 14 It is a three-dimensional view of the winding shaft that makes up the bobbin and its surrounding parts.

[0026] Figure 15 This is a front view of a display device equipped with wirelessly connected electronic components.

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

[0028] Figure 16B It is Figure 16A The rear view of the display device shown is of the display panel rolled up and housed within the housing.

[0029] Figure 17 This is a perspective view of a display device with wired electronic component units, viewed from the rear side.

[0030] Figure 18 It is Figure 17 An enlarged perspective view of the wiring rewinding mechanism and its surrounding parts of the display device shown.

[0031] Figure 19 It is a side view schematically representing the structure of the spool.

[0032] Explanation of reference numerals in the attached figures

[0033] 10... Display device; 12... Display panel; 14... Housing; 16... Take-up column; 20... Take-up body; 24... Constant load spring; 28A, 28B... Spool; 28a... Inlet / outlet; 29... End frame; 30A, 30B... Strip plate; 30a... First side; 30b... Second side; 34... Take-up shaft; 36... Outer cylinder component; 40... Annular guide; 42... Inlet guide; 44A, 44B... Guide component; 50... Drive unit; 52... Control board; 54... Electric motor; 56... Gear mechanism; 64, 70... Electronic component unit; 65... Electronic component; 68, 69... Terminal unit; 74... Wiring; 78... Spool. Detailed Implementation

[0034] Hereinafter, preferred embodiments of the display device according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited by these embodiments.

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

[0036] Figure 1 This is a perspective view of a display device 10 according to one embodiment. Figure 2A Viewed from the back side Figure 1 The three-dimensional view seen by the display device 10. Figure 2B It is Figure 2A A perspective view of the display panel 12 of the display device 10 being rolled up and housed within the housing 14. Figure 3 From Figure 2A The diagram shown is a perspective view of the display device 10 after the cover 14A has been removed. Figure 1 , Figure 2A and Figure 3 This shows the state after the display panel 12 is unrolled over the housing 14.

[0037] like Figures 1-3 As shown, the display device 10 may include a display panel 12, a housing 14, two take-up columns 16, 16, and an operation section 18.

[0038] The display device 10 can be used, for example, as an external display device to display images and pictures output from external devices such as personal computers, tablet terminals, or smartphones connected in a wired or wireless manner on a large screen. The display device 10 can also be used as a video conferencing system. The display device 10 can also be used as a television receiver. The display device 10 can be operated by the operation unit 18 to drive the drive unit 50 (described below) to rotate the tube 28 in both directions, causing the display panel 12 to rise and fall from the upper surface 14a of the housing 14. Alternatively, the display device 10 can be operated in place of the operation unit 18, for example, by commands from the aforementioned external devices to raise and lower the display panel 12. The display device 10 can also be operated manually to raise and lower the display panel 12.

[0039] The display panel 12 is a flexible, paper-like display panel that can be rolled up. The display panel 12 can be rolled into and unwound from the winding body 20 housed within the housing 14. The display panel 12 can be made of, for example, an OLED (Organic Light Emitting Diode). The display panel 12 can also be a touch panel. The size of the display panel 12 is not limited, for example, it can be 32 inches. Regarding the display panel 12, Figure 1 The front side shown is the display surface 12a, and the back side 12b is the non-display surface.

[0040] The following describes the display device 10 and its structural elements from a visual perspective. Figure 1Based on the direction observed by the user on the display surface 12a shown, the left and right directions are referred to as X1 and X2 directions, the up and down directions as Y1 and Y2 directions, and the front and back directions (depth directions) as Z1 and Z2 directions. Sometimes, X1 and X2 directions are collectively referred to as the X direction, and Y1 and Y2 directions and Z1 and Z2 directions are sometimes referred to as the Y direction and Z direction, respectively.

[0041] The display device 10 can be placed on a mounting surface such as a table or stand for use. The display panel 12 can be placed, for example, on... Figure 1 The usage location shown is the same as Figure 2B The storage positions shown can be moved forward or backward (raised or lowered). For example... Figure 1 As shown, the display device 10 can of course be used with the display panel 12 rolled up to the top position, and can also be used, for example, with the display panel 12 rolled up to the top position. Figure 1 The display device 10 can be used in a position where it is rolled down slightly so that only a portion of the display surface 12a is exposed. The display device 10 can also be housed, for example, under the top plate of a table, and configured to allow the display panel 12 to be raised and lowered from an opening formed in the top plate. The display device 10 can also be used by fixing the bottom surface (Z2 side surface) of the housing 14 to the ceiling, for example, so that the display panel 12 can be raised and lowered in a suspended state.

[0042] like Figures 1-3 As shown, the housing 14 is a rectangular cylindrical box that is longer in the X direction. The housing 14 may include: a cover 14A forming an upper surface 14a and four side surfaces, and a base plate 14B forming a bottom surface. In addition to supporting the winding body 20, the base plate 14B also supports structural elements such as the tube 28, the drive unit 50, and the control base plate 52, which will be described below, on its upper surface. The cover 14A is configured to cover the structural elements supported by the base plate 14B from above, and is connected to the base plate 14B by screws and hooks.

[0043] The cover 14A has an opening in the area of ​​the upper surface 14a of the housing 14 located on the back side 12b of the display panel 12. This opening is covered by a cover plate 14C. The cover plate 14C is detachably connected to the maintenance opening of the cover 14A by means of threaded connection or the like. The housing 14 can be easily maintained internally by removing the cover plate 14C.

[0044] like Figure 3As shown, the winding body 20 is arranged axially along the long side (X direction) of the housing 14. The axial length of the winding body 20 is slightly longer than the width of the display panel 12 in the X direction. The winding body 20 is supported by support plates 22a, 22b that stand near the left and right ends of the base plate 14b. The winding body 20 is located on the Z1 side of the display surface 12a of the unwound display panel 12. The winding body 20 winds and unwinds the display panel 12 with the display surface 12a as the inside.

[0045] Figure 3 Reference numeral 23 in the accompanying drawings refers to a winding guide for smoothing the winding and unwinding operations of the display panel 12 relative to the winding body 20. The winding guide 23 is a wing-shaped component with a curved surface. For example, multiple winding guides 23 are provided throughout the width direction of the back surface 12b of the display panel 12 within the housing 14.

[0046] Figure 4 It will be Figure 3 An enlarged three-dimensional view of the tubes 28A and 28B arranged on the X2 side and their surrounding parts. Figure 5 yes Figure 4 Rear view of the tubes 28A, 28B and their peripheral parts shown. Figure 6 This is a schematic side view of the display device 10. Figure 5 The illustration of monitor panel 12 is omitted. Figure 6 Illustrations of the casing 14, etc., are omitted.

[0047] The take-up body 20 is elastically stressed to take up the display panel 12 in the direction of the display panel 12. Figure 6 The display panel 12 rotates clockwise. It receives an upward reaction force from the take-up post 16, counteracting the force exerted by the take-up body 20 in the take-up direction (descending direction). Therefore, the display panel 12 can, for example, be held in place... Figure 1 The usage location is shown.

[0048] The winding body 20 is subjected to force toward the winding display panel 12 by a pair of constant load springs 24, 24 connected to its left and right ends respectively. It is preferable that the pair of constant load springs 24, 24 are symmetrical to each other, therefore, in the following description, it will sometimes be described without distinguishing which of the left and right constant load springs 24, 24 is being referred to.

[0049] Side plates 26a and 26b, parallel to the support plates 22a and 22b respectively, are erected at the left and right ends of the base plate 14b. A constant-load spring 24 is axially supported between the support plates 22a and 22b and the side plates 26a and 26b. The constant-load spring 24 may have an elastic belt 24a, a first pulley 24b, and a second pulley 24c. The first pulley 24b is coaxially arranged with the winding body 20.

[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 to 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 take-up column 16, the first end 16a in the long side direction is connected to the end portion 12c of the display panel 12, and the second end 16b is connected to the bobbins 28A and 28B inside the housing 14. The display panel 12 has an end frame 29 connected to the end portion 16c in the unwinding direction from the take-up body 20. The end frame 29 is a cap-shaped frame member extending toward the back surface 12b of the display panel 122, and is made 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 16a of the take-up column 16 is fixed to the Z2 side surface of the end frame 29 by screws or the like, thereby connecting it to the display panel 12. The bobbins 28A and 28B are the rotation axes for winding and unwinding the take-up column 16, but details will be described below.

[0056] One winding post 16 can be composed of two strip plates 30A and 30B in a set. It is preferable that the two strip plates 30A and 30B constituting one winding post 16 are symmetrically constructed. Therefore, they will sometimes be referred to as "strip plates 30" in the following description.

[0057] Figure 7A This is a schematic cross-sectional view of the strip 30. Figure 7B This is a schematic cross-sectional view of the winding column 16. Figure 8 This is a schematic diagram showing the action of winding two strip plates 30A and 30B that constitute a winding column 16 into a bobbin 28A and 28B.

[0058] like Figures 3 to 7B As shown, the strip 30 is a narrow, thin strip component that extends vertically along the back surface 12b of the display panel 12. The strip 30 can be constructed, for example, from a structure with an arcuate cross-section similar to that of a metal measuring tape, having a convex surface. The strip 30 can be wound into the bobbins 28A and 28B. When unwound, the strip 30 stands upright in the Y direction, resisting the force generated in the winding direction by the winding body 20 and holding the display panel 12 in its operating position.

[0059] The winding post 16 is configured such that the width direction of each strip 30 intersects (orthogonally in this embodiment) with respect to the surface direction of the back surface 12b of the display panel 12. The strip 30 has a concave curved surface 30a1 on its first surface 30a and a protrusion 30b1 protruding towards the center in the width direction on its second surface 30b. Thus, the strip 30 has a cross-sectional shape that is curved in an arc shape. When the strip 30 is wound into the bobbins 28A and 28B, the curved surface 30a1 and the protrusion 30b1 are deformed under pressure, causing the strip 30 to become planar.

[0060] like 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 It is a three-dimensional view of tubes 28A and 28B and their surrounding parts. Figure 10B From Figure 10A The diagram after the winding column 16 is omitted. Figure 11 This is a top view of the tubes 28A and 28B and their surrounding parts.

[0066] Figure 12A It is a three-dimensional sectional view of the tubes 28A, 28B and their surrounding parts. Figure 12B It is a comparison Figure 12A A cross-sectional perspective view of the tubes 28A and 28B and their surrounding parts at the offset position is formed on the Z1 side.

[0067] Figure 13 It is a sectional view of the back of the tubes 28A, 28B and their surrounding parts. Figure 14 It is a three-dimensional view of the winding shaft 34 that constitutes the bobbins 28A and 28B and its surrounding parts. Figure 11 The illustration of the display panel 12 is omitted. Figures 12A-13 The cross-sectional shapes obtained by cutting the tubes 28A, 28B and their periphery through the XY plane are shown. Figure 12A and Figure 12B The diagram of the winding column 16 is omitted in the text. Figure 14 The diagram of the outer cylinder component 36 that constitutes the cylinders 28A and 28B is omitted.

[0068] like Figure 3 and Figure 4 As shown, for one take-up column 16, bobbins 28A and 28B are used in pairs. One bobbin 28A can take up one strip 30A. The other bobbin 28A can take up another strip 30B. The two bobbins 28A and 28B are arranged directly below the take-up column 16 on the back side 12b of the display panel 12 along the X direction. The axial directions of the bobbins 28A and 28B are respectively arranged along the Z direction. The left and right bobbins 28A and 28B can also be symmetrically constructed to each other. Therefore, in the following description, they will sometimes be collectively referred to as "bobbins 28" without distinguishing which one of the left or right bobbins 28A and 28B is which.

[0069] like Figures 10A to 14 As shown, the tube 28 can have a winding shaft 34 and an outer tube component 36.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] like Figures 12A-13 As shown, the outer cylinder component 36 can have an annular guide 40 and an inlet guide 42.

[0074] First, the annular guide 40 is configured to protrude from the inner circumferential surface 36a of the outer cylinder member 36 in the inner diameter direction and extend circumferentially along the inner circumferential surface 36a. The width dimension of the annular guide 40 along the axial direction of the take-up shaft 34 is smaller than the width dimension of the strip plate 30. When the width dimension of the strip plate 30 is, for example, about 10 mm, the width dimension of the annular guide 40 can be, for example, about 1 mm.

[0075] The annular guide 40 contacts the strip 30 wound onto the take-up shaft 34 in a point or line contact manner. In this case, the line contact can also include contact formed by a narrow, linear surface. Thus, the annular guide 40 can prevent the strip 30 from adhering to the inner circumferential surface 36a and thus hindering smooth winding or unwinding. That is, the strip 30 has the property that, if there is no pulling force in the unwinding direction, the strip 30 will return to its arc shape and bulge towards the outer circumferential surface 34a away from the take-up shaft 34. Therefore, assuming that the inner circumferential surface 36a of the outer cylinder member 36 is formed by a smooth surface with the same width dimension as or wider than that of the strip 30, there is a possibility that the strip 30 will adhere to the inner circumferential surface 36a and become immobile during winding. The annular guide 40 contacts the second surface 30b of the strip 30 in a point or line contact manner, preventing the strip 30 from adhering to the inner circumferential surface 36a.

[0076] The annular guide 40 can have convex and concave shapes 40a arranged circumferentially along its inner peripheral surface 36a. The convex and concave shapes 40a can have a wavy shape with alternating convex portions 40a1 and concave portions 40a2. The annular guide 40 has convex and concave shapes 40a, allowing it to make point contact with the strip plate 30 through the apexes of each convex portion 40a1. Alternatively, the annular guide 40 can be formed as a narrow guide rail shape without convex and concave shapes 40a. In this case, the annular guide 40 can make line contact with the strip plate 30 through its narrow end face.

[0077] like Figure 12AAs shown, a pair of annular guides 40 can be arranged in the width direction (Z direction) of the inner peripheral surface 36a, spaced apart by a gap G3. In this case, the pair of annular guides 40, 40 can be positioned facing the two sides of the strip plate 30 in the width direction. If this is done, with the protrusion 30b1 of the second surface 30b of the strip plate 30 positioned at the gap G3, the two sides of the second surface 30b in the width direction contact the pair of annular guides 40, 40. Thus, the pair of annular guides 40, 40 can suppress the adhesion of the strip plate 30 to the inner peripheral surface 36a. Moreover, the pair of annular guides 40, 40 can also properly deform and correct the strip plate 30 wound onto the take-up shaft 34 into a planar shape. Alternatively, only one annular guide 40 can be provided 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.

[0078] Next, the guide member 42 protrudes from the inner circumferential surface 36a of the outer cylinder member 36 at a position facing the opening 36b formed by partially interrupting the inner circumferential surface 36a. The guide member 42 is located below the opening 36b (Y2 side), in other words, directly below the inlet / outlet 28a. The guide member 42 can be configured to be continuous with respect to the annular guide member 40. In this embodiment, the guide member 42 is integrally provided with the annular guide member 40. Figure 12A As shown, when a pair of annular guides 40 are provided axially on the winding shaft 34 with a gap G3, it is also preferable that a pair of guides 42 are also provided with a gap G3.

[0079] The guide 42 is a generally conical contact guide used to smoothly guide the strip 30 into the gap G2 by gradually narrowing the gap G2 as the strip 30 is wound toward the winding shaft 34. The guide 42 is inclined in a parabolic (quadratic curve) manner from the lowermost part of the inner circumferential surface 36a of the outer cylinder member 36 (the part closest to Y2) toward the opening 36b. As a result, the width (height) of the gap G2 expands conically from the lowermost part of the inner circumferential surface 36a toward the opening 36b, thus widening the opening.

[0080] Depending on the material, shape, etc. of the strip 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 guide 42 causes a local curvature change in the inner circumferential surface 36a of the outer cylinder member 36, which is preferable. Similarly, depending on the material, shape, etc. of the strip plate 30, the guide 42 can also be omitted.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] like Figures 10A-11 As shown, the tube 28 can have guide members 44A and 44B at the inlet and outlet 28a.

[0086] Guide member 44A is a member configured to cover a portion of the entrance / exit 28a of the strip plate 30A and support the root portion of the strip plate 30A. Guide member 44B is a member configured to cover a portion of the entrance / exit 28a of the strip plate 30B and support the root portion of the strip plate 30B. The left and right guide members 44A and 44B may also be symmetrically constructed to each other. Therefore, in the following description, they will sometimes be collectively referred to as "guide member 44" without distinguishing between the left and right guide members 44A and 44B.

[0087] The guide member 44 can be fixed to the outer cylinder member 36 in a manner that forms part of the upper surface of the cylinder 28 (see reference). Figure 5 The guide member 44 may have a first guide portion 44a and a pair of second guide portions 44b, 44b. The guide member 44 may form contact with a strip plate 30 in a point contact or line contact manner with the three guide portions 44A, 44B. In this case, the line contact may also include the case of contact with a narrow width of a line.

[0088] The first guide portion 44a is a protrusion provided on the inner periphery of the entrance / exit 28a on the X1 side (or X2 side). The first guide portion 44a contacts the center of the first surface 30a in a point contact or line contact manner in the width direction of the strip plate 30. The second guide portions 44b are respectively provided on the inner periphery of the entrance / exit 28a on the Z1 side and the Z2 side, and face each other in the Z direction. The pair of second guide portions 44b, 44b contact the two sides of the second surface 30b in the width direction of the strip plate 30.

[0089] The first guide portion 44a is formed, for example, in the first member 46 fixed to the outer cylinder member 36 by screws 48. The first member 46 is a metal block that is generally triangular or generally heart-shaped when viewed from above. The second guide portion 44b is formed, for example, in a pair of second members 47, 47 fixed to the outer cylinder member 36 by screws 48. The second member 47 is a metal block that is generally W-shaped when viewed from above. Members 46, 47 can have a vertical skirt-like shape extending along the advancing / retreating direction (Y direction) of the strip plate 30 relative to the inlet / outlet 28a. In this case, the guide portions 44A, 44B contact the strip plate 30 along a line along the long side direction of the strip plate 30. Alternatively, the guide portions 44A, 44B can be configured to protrude in a conical shape from members 46, 47 and make point contact with the strip plate 30.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] The flat surface 34a1 can be securely and firmly fixed to the second end 16b of the strip 30 by screws 49. After the flat surface 34a1 is fixed to the strip 30, it can be covered by an arcuate block 34a2 having a shape similar to the residual portion obtained by cutting out the flat surface 34a1. The arcuate block 34a2 can be fastened to the strip 30 by screws 49. As a result, the winding shaft 34 can connect the strip 30 more stably. Moreover, the winding shaft 34 can more reliably deform the curved shape of the strip 30 to be wound into a planar shape.

[0095] 4. Explanation of the drive unit

[0096] Next, the structure of the drive unit 50, which rotates the bobbins 28A and 28B to move the winding column 16 forward and backward, thereby raising and lowering the display panel 12, will be described.

[0097] like Figures 3-5 As shown, the drive unit 50 may include a control board 52, an electric motor 54, and a gear mechanism 56.

[0098] The control board 52 constitutes a control unit that controls the display device 10. In addition to the CPU, the control board 52 also houses various electronic components such as memory and power supply components. The control board 52 can receive operation signals from the operation unit 18 to drive the electric motor 54 to rotate. The control board 52 is connected to a predetermined power supply unit via a power line 58 (see reference). Figure 2A It is connected to an external power source. The electric motor 54 is a motor capable of rotating in both forward and reverse directions. Under the control of the control board 52, which receives the operation signal from the operation unit 18, the electric motor 54 drives the bobbin 28 to rotate via the gear mechanism 56, thereby raising and lowering the winding column 16.

[0099] The gear mechanism 56 transmits the driving force of the electric motor 54 to the cylinder 28. The gear mechanism 56 may have a gear set 60 that meshes with the output shaft of the electric motor 54 and a gear shaft 62 that meshes with the gear set 60. The gear set 60 is a reducer that meshes multiple gears to reduce the output of the electric motor 54 and transmit it to the gear shaft 62, causing the gear shaft 62 to rotate.

[0100] 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.

[0101] Next, an example of the operation of the display device 10 formed by the drive unit 50 will be described.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 5. Explanation of the function and effect of the display device

[0107] Next, the effects of such a display device 10 will be explained.

[0108] 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.

[0109] Thus, the display device 10 of this embodiment includes a take-up column 16 that can be wound onto the bobbin 28, serving as a support for the retractable display panel 12. Therefore, the display device 10 can support the display panel 12 without using a large linkage mechanism such as a scaling structure, achieving overall miniaturization and weight reduction of the device. Furthermore, the display device 10 can support the display panel 12 with a simple take-up column 16. Therefore, for the display device 10, the electric motor 54 that drives the take-up column 16 (bobbin 28) can also use small components, achieving power saving.

[0110] The take-up column 16 is wound into a bobbin 28 that is different from the take-up body 20 of the display panel 12. Thus, after the display panel 12 and the take-up column 16 are separately assembled into the housing 14, the display device 10 can be connected to each other simply by fixing the first end 16a of the take-up column 16 to the end frame 29. Therefore, the assemblability and maintainability of the display device 10 are improved.

[0111] The take-up column 16 can have a pair of strip plates 30A and 30B, which have a concave curved surface 30a1 on the first surface 30a and a protrusion 30b1 on the second surface 30b. By forming the take-up column 16 with strip plates 30A and 30B, the display device 10 can achieve further miniaturization and lightness.

[0112] At this time, the first surface 30a or the second surface 30b of the pair of strip plates 30A and 30B are arranged facing each other. That is, the strip plate 30 with an arc-shaped cross-section has the property of being easily bent relative to the bending load F1 on the side facing the first surface 30a where the curved surface 30a1 is formed, and not easily bent relative to the bending load F2 on the side facing the second surface 30b where the protrusion 30b1 is formed. Therefore, the winding post 16 arranges the two strip plates 30A and 30B in a mutually symmetrical manner. As a result, the winding post 16 can ensure high rigidity not only in the width direction (Z direction) of the strip plate 30, but also high rigidity for bending in the X1 and X2 directions. As a result, the winding post 16 can support the display panel 12 with high stability.

[0113] Alternatively, the two strip plates 30A and 30B constituting the take-up column 16 may be arranged with a large gap between them. For example, it may also be composed of only strip plate 30A. Figure 2A The winding post 16 on the X1 side shown is composed only of the strip plate 30B. Figure 2AThe winding post 16 is shown on the X2 side. In this case, the winding post 16 can also support the display panel 12 with high stability due to the bending characteristics of the two strips 30A and 30B. Preferably, the two strips 30A and 30B constituting one winding post 16 are arranged close to each other. This prevents hands or peripheral components from accidentally entering between the strips 30A and 30B or coming into contact with one of the strips 30A and 30B, which could cause bending.

[0114] The take-up column 16 is positioned on the back side 12b of the display panel 12, with its width direction intersecting the surface direction of the display panel 12. Therefore, when viewed from the front of the display device 10, the take-up column 16 is inconspicuous, improving the overall appearance of the display device 10 (see reference). Figure 1 Furthermore, since the tubes 28A and 28B for winding the strips 30A and 30B can be arranged along the X direction on the back side 12b, the Z direction dimension of the housing 14 can be reduced. Moreover, compared to the case where the strips 30A and 30B are arranged, for example, on the left and right sides of the display panel 12, the X direction length of the housing 14 can be reduced, which also helps to narrow the bezel width of the display panel 12.

[0115] The display device 10 includes: a constant-load spring 24 that applies force to the take-up body 20 in the direction of winding the display panel 12; an electric motor 54 that rotates the bobbin 28 at least in the direction of delivering the take-up column 16; and a gear mechanism 56 that transmits the driving force of the electric motor 54 to the bobbin 28. In this way, the force generated by the take-up body 20 is balanced with the reaction force generated by the take-up column 16, thus improving the stability of the display panel 12 in the usage position. Furthermore, the meshing resistance of the gear mechanism 56 can hold the take-up column 16 (display panel 12) in the raised position, thus reducing the load on the electric motor 54 and enabling its miniaturization.

[0116] That is, the display device 10 does not require a mechanical locking mechanism to hold the winding post 16 that holds the display panel 12. Therefore, assuming that the display panel 12 in the use position is subjected to a force that forces it down, if it is subjected to a load exceeding a predetermined load, the gear mechanism 56 is forcibly driven, and the display panel 12 descends. Therefore, the display device 10 avoids the situation where the winding post 16 and the display panel 12 are subjected to undesirable loads and breakage.

[0117] The display device 10 of this embodiment can include: a retractable display panel 12; a winding body 20 that winds up the display panel 12; a winding post 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 winding body 20; and a bobbin 28 that winds up the winding post 16. The winding post 16 can have a strip 30, which has a cross-sectional shape that is curved in an arc shape by having a concave curved surface 30a1 on a first surface 30a and a protrusion 30b1 on a second surface 30b. Furthermore, the display device 10 can include a guide member 44 provided at the inlet 28a where the strip 30 enters and exits relative to the bobbin 28. The guide member 44 forms point contact with the first surface 30a and the second surface 30b of the strip plate 30 or forms line contact with the first surface 30a and the second surface 30b of the strip plate 30 along the long side direction of the strip plate 30, thereby correcting the strip plate 30 into an arc-shaped cross-sectional shape.

[0118] For such a display device 10, the guide member 44 contacts the root portion of the strip 30 constituting the take-up column 16, which is unwound from the inlet 28a of the bobbin 28, in a point-contact or line-contact manner. As a result, since the root portion of the strip 30 is supported by the guide member 44, the support stability of the display panel 12 is further improved. Furthermore, the guide member 44 corrects the root portion of the strip 30 immediately after unwinding from the bobbin 28 into an arc shape. Therefore, the take-up column 16 is formed into an arc shape along the entire length of the strip 30 in the upright direction, including the root portion, which is not easily bent, thus further improving stability in the unwound state.

[0119] The guide member 44 may have: a first guide portion 44a that contacts the center of the first surface 30a in the width direction of the strip plate 30; and a pair of second guide portions 44b, 44b that contact the two sides of the second surface 30b. In this way, the support stability of the strip plate 30 is further improved for the guide member 44, and the strip plate 30 can be more reliably corrected into an arc shape.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 6. Description of wireless connectivity electronic component units

[0125] 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.

[0126] Figure 15 This is a front view of the display device 10 on which the electronic component unit 64 is installed. 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] The display device 10 can mount an electronic component unit 64, which includes electronic components 65 such as a camera, as described above, thus improving the user experience (UX). The electronic component unit 64 is wirelessly connected to the control board 52. Therefore, the display device 10 can mount electronic components such as a camera 65 at the end 12c of the rollable display panel 12, improving versatility. The electronic component unit 64 has a terminal portion 68 that can contact a terminal portion 69 provided on one side (upper surface 14a) of the housing 14. This allows the electronic component unit 64 to be easily charged with its built-in secondary battery 67 when the display device 10 is not in use.

[0137] However, the display device 10 is in a state of Figure 16B The display panel 12 in the storage location shown rises to Figure 16A In the indicated position, the initial operation represents the highest load for the driving force required to raise the winding column 16 via the bobbin 28. At this point, the terminal portion 68 (or 67) of the display device 10, which houses the electronic component unit 64, is formed by a terminal pin (spring pin) 66a that is elastically applied in the Y2 direction. Therefore, the terminal pin 66a can supplement the initial driving force required to raise the display panel 12 through its elasticity. Thus, the display device 10 can be further miniaturized by suppressing the output of the electric motor 54, and the device can also be miniaturized, lightened, and energy-efficient.

[0138] 7. Description of wired connection type electronic component units

[0139] Next, the structure of the wired connection type electronic component unit 70 and the display device 10 on which the electronic component unit 70 is installed will be described.

[0140] Figure 17 This is a perspective view of the display device 10, which is equipped with electronic component unit 70, as seen from the rear side. Figure 18 It is Figure 17 An enlarged perspective view of the wiring rewinding mechanism 76 and its surrounding portion of the display device 10 shown. Figure 19 This is a side view schematically representing the structure of spool 78. Figure 17 and Figure 18 The diagrams of the second pulley 24c, the drive unit 50, etc., which constitute the constant load spring 24, are omitted.

[0141] Figures 15-16B The electronic component unit 64 shown is of wireless connectivity. In contrast, Figure 17 and Figure 18The 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.

[0142] 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).

[0143] 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.

[0144] The wiring rewinding mechanism 76 can have a bobbin 78 and a deflection prevention device 79.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] This invention is not limited to the above-described embodiments, and it is self-evident that it can be freely modified within the scope of the spirit of this invention.

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 inlet guide is provided at the opening of the outer cylinder component. The inlet guide guides the winding column into the gap by gradually narrowing the gap as the winding column tends to be wound toward the winding shaft.

2. The display device according to claim 1, 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. With respect to the strip plate, the first surface faces the outer peripheral surface of the take-up shaft, and the second surface faces the inner peripheral surface of the outer cylinder component, thereby the second surface contacts the guide member.

3. The display device according to claim 2, characterized in that, An annular guide is provided on the inner circumferential surface of the outer cylinder component. The annular guide is formed such that its width is smaller than the axial width of the take-up column along the take-up shaft, extends circumferentially on the inner circumferential surface, and is capable of contacting the take-up column. The inlet guide is continuous relative to the annular guide.

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

5. The display device according to claim 4, 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 any one of claims 2 to 5, characterized in that, The winding column has a pair of the strip plates. The second surfaces of the pair of strip plates are close to each other and face each other. Each of the tubes is provided with respect to one of the strip plates. With regard to the two spools that wind the pair of strips constituting the winding column, the inlets and outlets of the strips face each other. The guide is shaped like a mountain, facing the openings of the two tubes respectively.

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

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