Indication device

Abstract

A roll-up display device capable of mounting electronic components such as a camera is provided. [Solution] The display device comprises a housing, a retractable display panel that is movable back and forth from one side of the housing, a winding body housed in the housing and winds up the display panel, a winding post having one end connected to the tip of the display panel in the unwinding direction and that moves back and forth together with the display panel and can hold the display panel in a position where it is unwound from the winding body, an electronic component unit that is housed at the tip of the display panel in the unwinding direction, a control board housed in the housing, and wiring that is housed along the winding post and connects the electronic component unit and the control board.

Description

[Technical Field]

[0001] The present invention relates to a display device having a rollable display panel. [Background technology]

[0002] Patent Document 1 discloses a retractable display device. In this display device, a display panel is retracted and stored inside a stationary housing, and a link mechanism is used to raise and lower the display panel under the action of a motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2021-140162 Summary of the Invention [Problem to be solved by the invention]

[0004] Like general flat display devices, roll-up display devices may also be required to install electronic components such as a camera or microphone at the tip of the display panel. In this case, since the display panel is roll-up, the handling of the wiring for the electronic components becomes an issue.

[0005] The present invention has been made in consideration of the above-mentioned problems of the prior art, and has an object to provide a roll-up display device on which electronic components such as a camera can be mounted. [Means for solving the problem]

[0006] A display device according to one aspect of the present invention comprises a housing, a retractable display panel that is movable forward and backward from one side of the housing, a winding body housed in the housing and winds up the display panel, a winding post having one end connected to the tip of the display panel in the unwinding direction, which moves forward and backward together with the display panel and can hold the display panel in a position where it is unwound from the winding body, an electronic component unit provided at the tip of the display panel in the unwinding direction, a control board housed in the housing, and wiring that is provided along the winding post and connects the electronic component unit and the control board. [Effects of the Invention]

[0007] According to the above aspect of the present invention, electronic components such as a camera can be mounted on the roll-up display device. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a display device according to an embodiment. [Figure 2A] FIG. 2A is a perspective view of the display device shown in FIG. 1 as seen from the rear side. [Figure 2B] FIG. 2B is a perspective view of the display device shown in FIG. 2A with the display panel rolled up and housed in a housing. [Figure 3] FIG. 3 is a perspective view of the display device shown in FIG. 2A with the cover removed. [Figure 4] FIG. 4 is an enlarged perspective view of the bobbins and their surroundings arranged on the X2 side in FIG. [Figure 5] 5 is a rear view of the bobbin and its surroundings shown in FIG. [Figure 6] FIG. 6 is a schematic side view of the display device. [Figure 7A] FIG. 7A is a schematic cross-sectional view of a band plate. [Figure 7B] FIG. 7B is a schematic cross-sectional view of the winding post. [Figure 8]FIG. 8 is a schematic diagram showing the operation of winding two strip-shaped plates that form one winding column onto a bobbin. [Figure 9] FIG. 9 is a schematic rear view showing the operation of winding a winding post according to a configuration example in which the orientations of the two strip-shaped plates are reversed from those of the winding post shown in FIG. 8 onto a bobbin. [Figure 10A] FIG. 10A is a perspective view of the bobbin and its surroundings. [Figure 10B] FIG. 10B is a view in which the winding pole is omitted from FIG. 10A. [Figure 11] FIG. 11 is a plan view of the bobbin and its surrounding area. [Figure 12A] FIG. 12A is a perspective cross-sectional view of the bobbin and its surrounding area. [Figure 12B] FIG. 12B is a cross-sectional perspective view of the bobbin and its surroundings at a position offset toward the Z1 side from FIG. 12A. [Figure 13] FIG. 13 is a rear cross-sectional view of the bobbin and its surrounding area. [Figure 14] FIG. 14 is a perspective view of the winding shaft and its surroundings that constitute the bobbin. [Figure 15] FIG. 15 is a front view of a display device to which a wirelessly connected electronic component unit is attached. [Figure 16A] FIG. 16A is a schematic rear view of the display device shown in FIG. [Figure 16B] FIG. 16B is a rear view of the display device shown in FIG. 16A with the display panel rolled up and housed in the housing. [Figure 17] FIG. 17 is a perspective view of a display device equipped with a wired electronic component unit, as viewed from the rear side. [Figure 18] 18 is an enlarged perspective view of the wire winding mechanism and its surroundings of the display device shown in FIG. [Figure 19] FIG. 19 is a side view schematically showing the configuration of the reel. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a display device according to the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0010] 1. Description of the overall configuration of the display device FIG. 1 is a perspective view of a display device 10 according to one embodiment. FIG. 2A is a perspective view of the display device 10 shown in FIG. 1 as seen from the rear side. FIG. 2B is a perspective view of the display device 10 shown in FIG. 2A with the display panel 12 rolled up and housed in the housing 14. FIG. 3 is a perspective view of the display device 10 shown in FIG. 2A with the cover material 14A removed. FIGS. 1, 2A, and 3 show the display panel 12 rolled up above the housing 14.

[0011] As shown in FIGS. 1 to 3, the display device 10 can include a display panel 12, a housing 14, two winding poles 16, 16, and an operation unit 18.

[0012] The display device 10 can be used as an external display device that displays on a large screen, for example, videos and images output from an external device such as a personal computer, a tablet terminal, or a smartphone connected via a wired or wireless connection. 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. By operating the operation unit 18, the display device 10 can drive the drive unit 50 (described later) to rotate the bobbin 28 forward and backward, thereby raising and lowering the display panel 12 from the top surface 14a of the housing 14. Instead of operating the operation unit 18, the display device 10 can also raise and lower the display panel 12 in response to a command from the external device described above. The display device 10 can also raise and lower the display panel 12 manually.

[0013] The display panel 12 is a rollable paper-like flexible display panel. The display panel 12 can be wound around a winding body 20 housed in a housing 14 and unwound from the winding body 20. 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, but is, for example, 32 inches. The front side of the display panel 12 shown in FIG. 1 is a display surface 12a, and the back side 12b is a non-display surface.

[0014] Hereinafter, the display device 10 and its components will be described using the direction as seen by a user viewing the display surface 12a shown in Fig. 1 as a reference, with the left-right direction referred to as the X1 and X2 directions, the up-down direction referred to as the Y1 and Y2 directions, and the front-back direction (depth direction) referred to as the Z1 and Z2 directions. The X1 and X2 directions may be collectively referred to as the X direction, and the Y1, Y2 directions and the Z1, Z2 directions may similarly be referred to as the Y direction and the Z direction.

[0015] The display device 10 can be used by being placed on a surface such as a desk or table. The display panel 12 can be moved forward and backward (raised and lowered) between, for example, a use position shown in FIG. 1 and a storage position shown in FIG. 2B. The display device 10 can be used not only in the position in which the display panel 12 is unrolled all the way up as shown in FIG. 1, but also in a position in which, for example, the display panel 12 is unrolled slightly lower than in FIG. 1 so that only a portion of the display surface 12a is exposed. The display device 10 can also be installed, for example, by storing the housing 14 under the top of a desk, with the display panel 12 being able to be raised and lowered through an opening formed in the top. The display device 10 can also be used, for example, by fixing the bottom surface (Z2 side surface) of the housing 14 to the ceiling and raising and lowering the display panel 12 in a suspended state.

[0016] As shown in FIGS. 1 to 3, the housing 14 is a rectangular cylindrical box that is long in the X direction. The housing 14 can include a cover member 14A that forms the top surface 14a and the four side surfaces, and a base plate 14B that forms the bottom surface. The base plate 14B supports on its top surface components such as the winding body 20, a bobbin 28, a drive unit 50, and a control board 52, which will be described later. The cover member 14A is provided so as to cover from above the components supported by the base plate 14B, and is connected to the base plate 14B with screws or hooks.

[0017] The cover material 14A can have an opening in a region that forms the top surface 14a of the housing 14 and is located on the rear surface 12b side of the display panel 12. This opening is covered with a cover plate 14C. The cover plate 14C is a maintenance hatch that is detachably connected to the cover material 14A by screws or the like. Internal maintenance of the housing 14 can be easily performed by removing the cover plate 14C.

[0018] As shown in FIG. 3, the axial direction of the winding body 20 is arranged along the longitudinal direction (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 axially supported by support plates 22a, 22b that stand upright near both 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 facing inward.

[0019] 3 denotes a winding guide for smoothly winding and unwinding the display panel 12 onto and from the winding body 20. The winding guide 23 is a flap-shaped component having a curved surface. A plurality of winding guides 23 are arranged, for example, inside the housing 14, across the width direction of the back surface 12b of the display panel 12.

[0020] Fig. 4 is an enlarged perspective view of the bobbins 28A, 28B and their surroundings lined up on the X2 side in Fig. 3. Fig. 5 is a rear view of the bobbins 28A, 28B and their surroundings shown in Fig. 4. Fig. 6 is a schematic side view of the display device 10. Fig. 5 does not show the display panel 12. Fig. 6 does not show the housing 14 and the like.

[0021] The winding body 20 is elastically biased so as to rotate in the direction of winding up the display panel 12, i.e., clockwise in Fig. 6. The display panel 12 receives an upward reaction force from the winding column 16 that resists the bias in the winding direction (downward direction) of the winding body 20. This allows the display panel 12 to be held in the use position shown in Fig. 1, for example.

[0022] The winding body 20 is biased in the direction of winding up the display panel 12 by a pair of constant force springs 24, 24 connected to the left and right ends, respectively. The pair of constant force springs 24, 24 may have a symmetrical structure, so in the following description, there may be cases where no distinction is made between the left and right constant force springs 24, 24.

[0023] Side plates 26a, 26b stand upright on both the left and right ends of the base plate 14b, parallel to the support plates 22a, 22b, respectively. The constant force spring 24 is journaled between the support plates 22a, 22b and the side plates 26a, 26b. The constant force spring 24 may include an elastic band 24a, a first pulley 24b, and a second pulley 24c. The first pulley 24b is disposed coaxially with the winding body 20.

[0024] The second pulley 24c has a smaller diameter than the first pulley 24b and is located on the Z2 side of the first pulley 24b. The elastic band 24a is a metal spring material with bending elasticity that causes it to spiral in its natural state, similar to a spiral spring. The elastic band 24a hardly stretches in the pulling direction. The first pulley 24b is wound in the direction opposite to the natural spiral direction of the elastic band 24a. The second pulley 24c winds the elastic band 24a unwound from the first pulley 24b in the natural spiral direction. This constant force spring 24 can always exert a constant elastic force to apply a rotational force to the first pulley 24b regardless of the amount of unwound of the elastic band 24a. In other words, the constant force spring 24 can always elastically bias the winding body 20 in the direction of winding the display panel 12 with a constant load.

[0025] The constant force spring 24 may be provided at only one of the left and right ends of the winding body 20. However, providing the constant force springs 24 at both the left and right ends of the winding body 20 allows for a reduction in the size of each constant force spring 24, which contributes to a more compact housing 14. Furthermore, the winding body 20 has a considerable length in the axial direction. For this reason, winding the winding body 20 with constant force springs 24 provided at both the left and right ends has the advantage of being less likely to twist around the axis.

[0026] 2. Description of the winding column Next, the configuration of the winding pole 16 will be described.

[0027] As shown in FIGS. 2A to 6, two winding columns 16 are installed, for example, on the rear surface 12b side of the display panel 12. The winding columns 16 are provided near the left and right ends of the display panel 12, respectively, and are extendable in the Z direction. The winding columns 16 function as supports that hold the display panel 12 in the unwound usage position. The winding columns 16 also function as a drive device that raises and lowers the display panel 12. The left and right winding columns 16, 16 may have a symmetrical structure, and therefore, in the following description, there may be cases where no distinction is made between the left and right winding columns 16.

[0028] The winding post 16 has a first longitudinal end 16a connected to the tip 12c of the display panel 12 and a second end 16b connected to bobbins 28A and 28B inside the housing 14. A tip frame 29 is connected to the tip 16c of the display panel 12 in the unwinding direction from the winding body 20. The tip frame 29 is a canopy-shaped frame member that protrudes toward the back surface 12b of the display panel 122 and is made of metal or resin. The tip frame 29 is long in the X direction, narrow in the Z direction, and thin in the Y direction. The first end 16a of the winding post 16 is fixed to the Z2 side of the tip frame 29 by screws or the like, thereby connecting to the display panel 12. The bobbins 28A and 28B are rotation axes that wind and unwind the winding post 16, and will be described in detail below.

[0029] One winding pole 16 can be made up of a pair of belt-shaped plates 30A, 30B. The two belt-shaped plates 30A, 30B that make up one winding pole 16 can have a bilaterally symmetrical structure, and therefore, in the following description, they may be collectively referred to as "belt-shaped plates 30."

[0030] Fig. 7A is a schematic cross-sectional view of the band-shaped plate 30. Fig. 7B is a schematic cross-sectional view of the winding post 16. Fig. 8 is a schematic diagram showing the operation of winding two band-shaped plates 30A and 30B that make up one winding post 16 onto bobbins 28A and 28B.

[0031] As shown in FIGS. 3 to 7B, the strip plate 30 is a thin, narrow strip-shaped plate member that can extend vertically along the rear surface 12b of the display panel 12. The strip plate 30 can be configured, for example, as a plate having an arc-shaped cross section similar to a metal tape measure known as a convex. The strip plate 30 can be wound around bobbins 28A and 28B. When unwound, the strip plate 30 stands up in the Y direction and can hold the display panel 12 in the usage position against the biasing force of the winding body 20 in the winding direction.

[0032] The winding poles 16 can be arranged such that the width direction of each strip plate 30 intersects (orthogonal in this embodiment) with the surface direction of the back surface 12b of the display panel 12. The strip plate 30 has a concave curved surface 30a1 on the first surface 30a and a convex portion 30b1 on the second surface 30b that protrudes toward the center in the width direction. This gives the strip plate 30 an arc-shaped cross-sectional shape. When the strip plate 30 is wound around the bobbins 28A, 28B, the curved surface 30a1 and the convex portion 30b1 are flattened, forming a flat shape.

[0033] As shown in Fig. 7A, the arc-shaped band plate 30 is weak against a bending load F1 toward the first surface 30a, but strong against a bending load F2 toward the second surface 30b. In other words, the band plate 30 is easy to break toward the first surface 30a, but difficult to break toward the second surface 30b. Therefore, as shown in Figs. 4, 7B, and 8, the two band plates 30A, 30B that make up one winding pole 16 are arranged facing each other with their second surfaces 30b close to each other. This gives the winding pole 16 a generally X-shaped cross section and high rigidity against bending loads in both the X1 and X2 directions.

[0034] In this way, the winding post 16 of this embodiment can have a back-to-back structure in which the second surfaces 30b of the two strip-shaped plates 30A, 30B face each other. This allows the winding post 16 to smoothly wind and unwind the two strip-shaped plates 30A, 30B through the gap between the bobbins 28A, 28B arranged symmetrically as shown in Fig. 8. Note that a gap G1 is formed between the second surfaces 30b, 30b of the pair of strip-shaped plates 30A, 30B arranged back-to-back (see Fig. 7B).

[0035] As shown in FIG. 9, the two strip-shaped plates 30A and 30B constituting one winding column 16 can be configured so that their first surfaces 30a face each other. In this case, the winding column 16 has a generally elliptical cross-sectional shape overall and is highly rigid against bending loads in both the X1 and X2 directions. However, the winding column 16 shown in FIG. 9 requires that the strip-shaped plates 30A and 30B be wound from the outside of the bobbins 28A and 28B, which are arranged symmetrically on the left and right. Therefore, the configuration example shown in FIG. 9 has a larger overall cross-sectional area of ​​the winding column 16, including the bobbins 28A and 28B, than the configuration example shown in FIG. 8. Furthermore, the configuration example shown in FIG. 9 requires a gap between the two strip-shaped plates 30A and 30B equal to the width of the bobbins 28A and 28B arranged side by side. Therefore, the configuration example shown in FIG. 9 has a larger apparent cross-sectional area of ​​one winding column 16 than the configuration example shown in FIG. 8.

[0036] 3. Explanation of the bobbin and its surrounding parts Next, the configuration of the bobbins 28A and 28B and their surroundings will be described.

[0037] FIG. 10A is a perspective view of the bobbins 28A, 28B and their surrounding areas. FIG. 10B is a view of FIG. 10A with the winding post 16 omitted. FIG. 11 is a plan view of the bobbins 28A, 28B and their surrounding areas. FIG. 12A is a perspective cross-sectional view of the bobbins 28A, 28B and their surrounding areas. FIG. 12B is a cross-sectional perspective view of the bobbins 28A, 28B and their surrounding areas at a position offset to the Z1 side from FIG. 12A. FIG. 13 is a rear cross-sectional view of the bobbins 28A, 28B and their surrounding areas. FIG. 14 is a perspective view of the winding shaft 34 constituting the bobbins 28A, 28B and their surrounding areas. The display panel 12 is not shown in FIG. 11. FIGS. 12A to 13 show cross-sectional shapes of the bobbins 28A, 28B and their surrounding areas cut along the XY plane. The winding post 16 is not shown in FIGS. 12A and 12B. In FIG. 14, the outer cylindrical member 36 that constitutes the bobbins 28A and 28B is not shown.

[0038] As shown in Figures 3 and 4, the bobbins 28A, 28B are used in pairs for one winding post 16. One bobbin 28A can wind one of the strip-shaped plates 30A. The other bobbin 28A can wind the other strip-shaped plate 30B. The two bobbins 28A, 28B are arranged side by side in the X direction directly below the winding post 16 on the rear surface 12b side of the display panel 12. The axial directions of the bobbins 28A, 28B are arranged along the Z direction. The left and right bobbins 28A, 28B may have a symmetrical structure, and therefore, in the following description, they may be collectively referred to as "bobbins 28" without distinguishing between the left and right bobbins 28A, 28B.

[0039] As shown in FIGS. 10A to 14, the bobbin 28 can have a take-up shaft 34 and an outer cylindrical member 36.

[0040] The winding shaft 34 is a rotating shaft that winds the strip plate 30 onto its outer peripheral surface 34a. When the shaft 34b fitted at the center of the winding shaft 34 is driven to rotate, the winding shaft 34 rotates integrally with the shaft 34b. The winding shaft 34 is preferably formed of a self-lubricating resin (sliding material) such as polyacetal (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This prevents noise and snagging during winding of the metal strip plate 30 onto the bobbin 28, enabling smoother winding. The shaft 34b can be made of a metal shaft. The shaft 34b is the central axis of the bobbin 28, with its axial direction aligned in the Z direction. The shaft 34b is rotated in both forward and reverse directions by the drive unit 50, as will be described in detail below.

[0041] The outer tube member 36 is a housing that encloses the strip-shaped plate 30 wound around the outer peripheral surface 34a of the winding shaft 34 so as to enclose it inside. The outer tube member 36 has an inner peripheral surface 36a that faces the outer peripheral surface 34a of the winding shaft 34 with a gap G2 provided between them. The gap G2 needs to be large enough (spacing large enough) that the strip-shaped plate 30, when fully wound around the winding shaft 34, does not get stuck between the surfaces 34a, 36a. The first surface 30a of the band-shaped plate 30, which has a curved surface 30a1, faces the outer peripheral surface 34a of the winding shaft 34, and the second surface 30b, which has a protrusion 30b1, faces the inner peripheral surface 36a of the outer tube member 36.

[0042] The outer tube member 36 has an opening 36b in a portion of an inner peripheral surface 36a extending circumferentially around the winding shaft 34. The opening 36b is located directly below the band-shaped plate 30. The opening 36b forms an entrance 28a for the bobbin 28 of the band-shaped plate 30. The outer tube member 36 of this embodiment has a generally eyeglass-like shape when viewed from the front and integrally houses the winding shafts 34 of the left and right bobbins 28A, 28B. The openings 36b of the left and right bobbins 28A, 28B are positioned opposite each other, and the two openings 36b, 36b collectively form a common entrance 28a for the left and right bobbins 28A, 28B. The outer tube member 36 may be formed in a cylindrical shape, and one opening 36b may be provided for each of the left and right bobbins 28A, 28B.

[0043] As shown in FIGS. 12A to 13, the outer cylindrical member 36 can have a ring-shaped guide 40 and an introduction guide 42.

[0044] First, the ring-shaped guide 40 is provided so as to protrude radially inward from the inner peripheral surface 36a of the outer cylindrical member 36, and extends circumferentially along the inner peripheral surface 36a. The width of the ring-shaped guide 40 along the axial direction of the winding shaft 34 is narrower than the width of the band-shaped plate 30. If the width of the band-shaped plate 30 is, for example, about 10 mm, the width of the ring-shaped guide 40 can be, for example, about 1 mm.

[0045] The ring-shaped guide 40 makes point or line contact with the strip plate 30 wound around the winding shaft 34. Line contact in this case can also include contact with a narrow linear surface. This prevents the strip plate 30 from sticking to the inner peripheral surface 36a, preventing smooth winding or unwinding. In other words, the strip plate 30 has the property of returning to its arc shape and expanding away from the outer peripheral surface 34a of the winding shaft 34 if there is no tensile force in the unwinding direction. Therefore, if the inner peripheral surface 36a of the outer cylindrical member 36 is formed as a smooth surface equal to or greater than the width of the strip plate 30, the strip plate 30 may stick to the inner peripheral surface 36a and become stuck during winding. The ring-shaped guide 40 makes point or line contact with the second surface 30b of the strip plate 30, preventing it from sticking to the inner peripheral surface 36a.

[0046] The ring-shaped guide 40 may have an uneven shape 40a aligned along the circumferential direction of the inner peripheral surface 36a. The uneven shape 40a may have a wave shape in which convex portions 40a1 and concave portions 40a2 are alternately arranged. By having the uneven shape 40a, the ring-shaped guide 40 can make point contact with the band-shaped plate 30 at the apex of each convex portion 40a1. The ring-shaped guide 40 may also be formed in the shape of a narrow rail without the uneven shape 40a. In this case, the ring-shaped guide 40 can make line contact with the band-shaped plate 30 at its narrow end surface.

[0047] As shown in FIG. 12A , a pair of ring-shaped guides 40 can be arranged side by side in the width direction (Z direction) of the inner peripheral surface 36a with a gap G3 between them. In this case, the pair of ring-shaped guides 40 can be positioned facing both sides of the width direction of the band plate 30. In this case, with the convex portion 30b1 of the second surface 30b positioned in the gap G3, both sides of the width direction of the band plate 30 contact the pair of ring-shaped guides 40. This prevents the band plate 30 from sticking to the inner peripheral surface 36a. Furthermore, the pair of ring-shaped guides 40 can also properly flatten the band plate 30 wound around the winding shaft 34 to form a flat surface. Only one ring-shaped guide 40 may be arranged in the width direction of the inner peripheral surface 36a, in which case it is preferable to position the ring-shaped guide 40 facing the center of the second surface 30b.

[0048] Next, the introduction guide 42 protrudes from the inner circumferential surface 36a of the outer tubular member 36 at a position facing the opening 36b, where a portion of the inner circumferential surface 36a of the outer tubular member 36 is discontinued. The introduction guide 42 is located below the opening 36b (Y2 side), i.e., directly below the entrance 28a. The introduction guide 42 can be provided so as to be continuous with the ring-shaped guide 40. In this embodiment, the introduction guide 42 is provided integrally with the ring-shaped guide 40. If a pair of ring-shaped guides 40 are provided with a gap G3 therebetween in the axial direction of the winding shaft 34 as shown in FIG. 12A, it is preferable that the introduction guides 42 also be provided in a pair with a gap G3 therebetween.

[0049] The introduction guide 42 is a generally tapered contact guide that gradually narrows the gap G2 in the direction in which the strip plate 30 is wound around the winding shaft 34, thereby smoothly introducing the strip plate 30 into the gap G2. The introduction guide 42 is inclined so as to describe a parabola (quadratic curve) from the lowest part (the part located closest to the Y2 side) of the inner circumferential surface 36a of the outer cylindrical member 36 toward the opening 36b. As a result, the width (height) of the gap G2 increases in a tapered manner, opening from the lowest part of the inner circumferential surface 36a toward the opening 36b.

[0050] The outer tube member 36 may be configured without the ring-shaped guide 40, depending on the material and shape of the band-shaped plate 30 that constitutes the winding post 16. In this case, the introduction guide 42 may be formed by changing the curvature of a portion of the inner circumferential surface 36a of the outer tube member 36. Similarly, depending on the material and shape of the band-shaped plate 30, the introduction guide 42 may be omitted.

[0051] The introduction guide 42 prevents the strip plate 30 from hitting the inner circumferential surface 36a of the outer tubular member 36 directly below the entrance 28a (opening 36b), preventing smooth winding. Specifically, as described above, the strip plate 30 has the tendency to expand in a direction away from the outer circumferential surface 34a of the winding shaft 34. The strip plate 30 also has a certain degree of curvature immediately after passing through the entrance 28a, i.e., before being flattened. Therefore, if the gap G2 were formed at a uniformly narrow interval near the entrance 28a, there is a concern that the strip plate 30 would hit the inner circumferential surface 36a, preventing smooth winding. Therefore, the introduction guide 42 smoothly guides the strip plate 30 into the gap G2, enabling smooth winding onto the winding shaft 34.

[0052] In this case, the introduction guide 42, like the ring-shaped guide 40, is narrower than the strip plate 30. This allows the introduction guide 42 to contact the strip plate 30 at a point or a line, preventing it from sticking to the inner peripheral surface 36a, making winding even smoother. In addition, the uneven shape 40a of the bobbin 28 continues up to the introduction guide 42, making it possible to wind the strip plate 30 even more smoothly.

[0053] In this embodiment, the openings 36b of the left and right bobbins 28A, 28B face each other, forming a single large opening, the inlet / outlet port 28a. Therefore, the outer tube member 36 can be formed from the same component for the left and right bobbins 28A, 28B. In this case, the introduction guides 42, 42 for the left and right bobbins 28A, 28B can also be integrally formed. That is, the introduction guides 42, 42 for the left and right bobbins 28A, 28B can be formed in a mountain shape as a whole when viewed from the front (see FIG. 13). This simplifies and downsizes the structure of the bobbins 28A, 28B, including the introduction guides 42.

[0054] As described above, the ring-shaped guide 40 and the introduction guide 42 come into contact with the metal strip-shaped plate 30. Therefore, like the winding shaft 34, the ring-shaped guide 40 and the introduction guide 42 are preferably made of a self-lubricating resin (sliding material) such as polyacetal (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This allows the ring-shaped guide 40 and the introduction guide 42 to wind the metal strip-shaped plate 30 more smoothly and prevents noise and snagging during winding.

[0055] As shown in FIGS. 10A to 11, the bobbin 28 can have guide members 44A and 44B at the entrance 28a.

[0056] The guide member 44A is provided to cover a portion of the opening 28a of the band plate 30A and is a member that supports the base portion of the band plate 30A. The guide member 44B is provided to cover a portion of the opening 28a of the band plate 30B and is a member that supports the base portion of the band plate 30B. Because the left and right guide members 44A, 44B may have a bilaterally symmetrical structure, in the following description, they may be collectively referred to as "guide member 44" without distinguishing between the left and right guide members 44A, 44B.

[0057] The guide member 44 can be fixed to the outer cylindrical member 36 so as to form part of the upper surface of the bobbin 28 (see FIG. 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 point or line contact with one strip-shaped plate 30 at the three guide portions 44a, 44b. In this case, line contact can also include contact at a linear narrow surface.

[0058] The first guide portion 44a is a protrusion provided on the inner periphery on the X1 side (or X2 side) of the entrance 28a. The first guide portion 44a makes contact at a point or a line with the center of the first surface 30a in the width direction of the band-shaped plate 30. The second guides 44b are provided on the inner periphery on the Z1 side and Z2 side of the entrance 28a, respectively, and face each other in the Z direction. The pair of second guide portions 44b, 44b make contact with both sides of the second surface 30b in the width direction of the band-shaped plate 30.

[0059] The first guide portion 44a is formed on a first member 46 fixed to the outer cylindrical member 36 with screws 48, for example. The first member 46 is a metal block formed in a substantially triangular or heart shape in a plan view. The second guide portion 44b is formed on a pair of second members 47, 47 fixed to the outer cylindrical member 36 with screws 48, for example. The second members 47 are metal blocks formed in a substantially W shape in a plan view. The members 46, 47 may have a vertical skirt shape extending along the direction of advancement and retreat of the band-shaped plate 30 relative to the entrance / exit 28a (Y direction). In this case, the guide portions 44a, 44b contact the band-shaped plate 30 along a line along the longitudinal direction of the band-shaped plate 30. The guide portions 44a, 44b may be configured to protrude in a conical (tapered) shape from the members 46, 47 and make point contact with the band-shaped plate 30.

[0060] The guide members 44 support the base portion of the strip plate 30. This allows the base portion of the strip plate 30, which is prone to shaking while supporting the display panel 12 in the use position, to be supported by the guide members 44, further improving the stability of supporting the display panel 12. Furthermore, the guide members 44 can straighten the base portion of the strip plate 30 into an arc shape immediately after it is unwound from the bobbin 28, which has been crushed and wound flat. This allows the strip plate 30 to be formed into an arc shape that is resistant to bending all the way to the base portion, further improving stability in the unwound state.

[0061] In this embodiment, the openings 36b of the left and right bobbins 28A, 28B face each other, forming a single large opening, i.e., the entrance 28a. The guide members 44A, 44B have an integral, generally X-shaped cutout hole as a whole, and can simultaneously support the two strip plates 30A, 30B that are passed through this hole. For example, the second member 47 is shared by the left and right guide members 44A, 44B. That is, in the guide members 44A, 44B of this embodiment, the second guide portions 44b that support both widthwise sides of the two strip plates 30A, 30B are formed in the same component (the second member 47). This allows the guide members 44A, 44B to more accurately set the relative positions of the two strip plates 30A, 30B, improving the linearity and stability of the winding column 16 in which the two strip plates 30A, 30B are arranged back-to-back.

[0062] As described above, the guide member 44 comes into contact with the metal band-shaped plate 30. Therefore, like the winding shaft 34 and the ring-shaped guide 40, the guide member 44 is preferably made of a self-lubricating resin (sliding material) such as polyacetal (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This allows the guide member 44 to reduce the sliding resistance of the metal band-shaped plate 30 and suppress noise and snagging during winding and unwinding.

[0063] As shown in FIGS. 13 and 14, the winding shaft 34 of the bobbin 28 can be configured in a D-cut shape with a flat surface 34a1 on a part of the outer circumferential surface 34a.

[0064] The flat surface 34a1 makes it possible to stably and reliably fix the second end 16b of the band plate 30 with the screw 49. After the band plate 30 is fixed to the flat surface 34a1, it can be covered with an arc-shaped block 34a2 that has a roughly crescent shape similar to the shape of the remaining part when the flat surface 34a1 is cut off. The arc-shaped block 34a2 can be fastened together with the band plate 30 with the screw 49. This allows the winding shaft 34 to connect the band plate 30 more stably. Furthermore, the winding shaft 34 can more reliably deform the curved shape of the band plate 30 that it is winding into a flat shape.

[0065] 4. Description of the drive unit Next, the configuration of the drive unit 50 that 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.

[0066] As shown in FIGS. 3 to 5, the drive unit 50 can include a control board 52, an electric motor 54, and a gear mechanism 56.

[0067] The control board 52 constitutes a control unit that controls the display device 10. In addition to a CPU, various electronic components such as memory and power supply components are mounted on the control board 52. The control board 52 can receive operation signals from the operation unit 18 to rotate the electric motor 54. The control board 52 is connected to an external power source via a power cord 58 (see FIG. 2A) that is connected to a predetermined power supply unit. The electric motor 54 is a motor that can rotate forward and backward. Under the control of the control board 52 that receives operation signals from the operation unit 18, the electric motor 54 can rotate the bobbin 28 via a gear mechanism 56 and raise and lower the winding post 16.

[0068] The gear mechanism 56 transmits the driving force of the electric motor 54 to the bobbin 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 made up of multiple gears meshed together, and reduces the output of the electric motor 54 before transmitting it to the gear shaft 62, causing it to rotate.

[0069] The gear shaft 62 may include a metal shaft 62a extending over substantially the entire length of the housing 14 in the X direction, and multiple gears 62b, 62c, and 62d fitted onto the metal shaft 62a. The metal shaft 62a is supported by multiple bearings 62e arranged in the X direction on the base plate 14B, and is rotatable around its axis. The metal shaft 62a extends so as to pass through the Z2 side of each bobbin 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 has been reduced in speed by the gear set 60, and rotates the metal shaft 62a. The gears 62c and 62d are located near the shafts 34b of the bobbins 28A and 28B, respectively. The gears 62c and 62d are bevel gears that rotate around the axis of the metal shaft 62a. A bevel gear 34c that rotates around the axis of the shaft 34b is fitted to the Z2 side end of the shaft 34b of each bobbin 28. The gears 62c and 62d mesh with the bevel gear 34c of each shaft 34b, and transmit the rotation of the metal shaft 62a to the shaft 34b, thereby rotating the bobbin 28.

[0070] Next, an example of the operation of the display device 10 by the drive unit 50 will be described.

[0071] When the display device 10 receives an ON operation from the operation unit 18 while the display panel 12 is in the storage position shown in FIG. 2B , the electric motor 54 rotates in one direction under the control of the control board 52, and rotates the bobbin 28 in the unwinding direction via the gear mechanism 56. This causes the winding post 16 to unwind from the bobbin 28. The winding post 16 unwound from the bobbin 28 gradually rises from the upper surface 14a of the housing 14. At that time, the winding post 16 pushes up the display panel 12 in the Y1 direction against the biasing force of the winding body 20 in the Y2 direction.

[0072] For example, when the display panel 12 reaches the use position shown in FIG. 2A , the electric motor 54 stops rotating. At this time, the winding post 16 is held in the raised position shown in FIG. 2A by the meshing resistance of the gears constituting the gear mechanism 56, and thus stably stands upright in the Y direction. Therefore, the flexible display panel 12 is reliably held in the use position by the winding post 16, allowing the desired video or image to be displayed. In addition, in this state, the display panel 12 is constantly biased in the winding direction (Y2 direction) by the winding body 20. That is, the winding post 16 applies a reaction force in the Y1 direction to the leading end 12c of the display panel 12, which counters the biasing force in the Y2 direction from the winding body 20. Therefore, when the display panel 12 is in the use position, the lower end is pulled downward by the winding body 20, and the upper end is pushed upward by the winding post 16. This balance of forces allows the display surface 12a to be formed into an even plane without bending or distortion.

[0073] When the display device 10 receives an OFF operation from the operation unit 18 while the display panel 12 is in the use position shown in FIG. 2A, the electric motor 54 rotates in the other direction under the control of the control board 52, and rotates the bobbin 28 in the winding direction via the gear mechanism 56. This causes the winding post 16 to be wound onto the bobbin 28. The winding post 16 wound onto the bobbin 28 is gradually drawn into the housing 14. At this time, the winding post 16 is also subjected to a biasing force in the Y2 direction by the winding body 20, so the display panel 12 can be wound up with a significantly reduced driving power of the electric motor 54.

[0074] 2B, the rotation of the electric motor 54 is stopped. In this state, the display panel 12 and the winding pole 16 are housed in the rod-shaped housing 14, making the display device 10 compact overall and facilitating storage and transportation.

[0075] 5. Explanation of the effects of the display device Next, the effects of the display device 10 will be described.

[0076] 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 whose first end 16a is connected to the tip 12c of the display panel 12 in the unwinding direction and moves back and forth together with the display panel 12, and which can hold the display panel 12 in a position where it is unwound from the winding body 20, and a bobbin 28 to which the second end 16b of the winding post 16 is connected and which winds up the winding post 16.

[0077] As described above, the display device 10 of this embodiment includes the winding post 16, which can be wound around the bobbin 28, as a support for supporting the windable display panel 12. Therefore, the display device 10 can support the display panel 12 without using a large-scale link mechanism such as a pantograph structure, and the entire device can be made smaller and lighter. Furthermore, the display device 10 can support the display panel 12 with the simple winding post 16. Therefore, the display device 10 can use a small electric motor 54 that drives the winding post 16 (bobbin 28), and power consumption can also be reduced.

[0078] The winding pole 16 is wound onto a bobbin 28 separate from the winding body 20 of the display panel 12. This allows the display device 10 to be connected to the display panel 12 and the winding pole 16 by simply assembling them separately into the housing 14 and then fixing the first end 16a of the winding pole 16 to the tip frame 29. This improves the assembly and maintenance of the display device 10.

[0079] The winding pole 16 may have a pair of band-shaped plates 30A, 30B, each having a first surface 30a with a concave curved surface 30a1 and a second surface 30b with a convex portion 30b1. By configuring the winding pole 16 with the band-shaped plates 30A, 30B, the display device 10 can be made even smaller and lighter.

[0080] In this case, the pair of strip plates 30A, 30B are arranged with their first surfaces 30a or second surfaces 30b facing each other. That is, the strip plate 30, which has an arc-shaped cross section, is easily bent by a bending load F1 applied to the first surface 30a, where the curved surface 30a1 is formed, but is difficult to bend by a bending load F2 applied to the second surface 30b, where the protrusion 30b1 is formed. Therefore, the winding column 16 has two strip plates 30A, 30B arranged symmetrically with respect to each other. This ensures that the winding column 16 has high rigidity against bending not only in the width direction (Z direction) of the strip plate 30, but also in the X1 and X2 directions. As a result, the winding column 16 can support the display panel 12 with high stability.

[0081] The two strip plates 30A and 30B constituting the winding column 16 may be arranged with a large gap between them. For example, the winding column 16 on the X1 side shown in FIG. 2A may be composed of only the strip plate 30A, and the winding column 16 on the X2 side shown in FIG. 2A may be composed of only the strip plate 30B. In this case, too, the bending characteristics of the two strip plates 30A and 30B allow the winding column 16 to support the display panel 12 with high stability. However, it is preferable that the two strip plates 30A and 30B constituting one winding column 16 be arranged close to each other. This prevents a hand or a peripheral object from accidentally getting between the strip plates 30A and 30B and touching one of the strip plates 30A and 30B, causing it to bend.

[0082] The winding column 16 can be disposed on the rear surface 12b of the display panel 12, with the width direction of the pair of strip plates 30A, 30B intersecting the surface direction of the display panel 12. This makes the winding column 16 inconspicuous when viewed from the front of the display device 10, improving the appearance quality of the display device 10 (see FIG. 1). In addition, the bobbins 28A, 28B for winding the strip plates 30A, 30B can be aligned in the X direction on the rear surface 12b, thereby reducing the Z direction dimension of the housing 14. Furthermore, compared to when the strip plates 30A, 30B are disposed on the left and right sides of the display panel 12, the length of the housing 14 in the X direction can be reduced, which also contributes to narrowing the bezel width of the display panel 12.

[0083] The display device 10 can include a constant-force spring 24 that biases the winding 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 unwinding the winding post 16, and a gear mechanism 56 that transmits the driving force of the electric motor 54 to the bobbin 28. This balances the biasing force of the winding body 20 and the reaction force of the winding post 16, improving the stability of the display panel 12 in the usage position. Furthermore, the meshing resistance of the gear mechanism 56 can hold the winding post 16 (display panel 12) in the raised position, reducing the load on the electric motor 54 and enabling it to be made smaller.

[0084] That is, the display device 10 does not need to use a mechanical locking mechanism to hold the winding pole 16 that holds the display panel 12. Therefore, if the display panel 12 in the use position is subjected to a forceful downward pressure or the like, the gear mechanism 56 will be forcibly driven and the display panel 12 will be lowered if the load exceeds a predetermined value. This prevents the display device 10 from damaging the winding pole 16 or the display panel 12 due to an unintended load.

[0085] The display device 10 of this embodiment may include a retractable display panel 12, a winding body 20 that winds up the display panel 12, a winding post 16 that moves back and forth together 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 may have a band-shaped plate 30 that has a curved, arc-shaped cross-sectional shape, with a concave curved surface 30a1 on the first surface 30a and a convex portion 30b1 on the second surface 30b. The display device 10 may further include a guide member 44 provided at an entrance 28a of the band plate 30 for the bobbin 28. The guide member 44 makes point contact with the first surface 30a and the second surface 30b of the band plate 30 or makes line contact along the longitudinal direction of the band plate 30, thereby correcting the band plate 30 to have an arc-shaped cross-sectional shape.

[0086] In this display device 10, the guide member 44 makes point or line contact with the base of the strip plate 30 that constitutes the winding post 16 when it is unwound from the entrance 28a of the bobbin 28. As a result, the base of the strip plate 30 of the winding post 16 is supported by the guide member 44, further improving the stability of supporting the display panel 12. Furthermore, the guide member 44 straightens the base of the strip plate 30 into an arc shape immediately after it is unwound from the bobbin 28. As a result, the entire length of the winding post 16 in the standing direction, including the base of the strip plate 30, is formed into an arc shape that is resistant to bending, further improving stability in the unwound state.

[0087] The guide member 44 can have a first guide portion 44a that contacts the center of the first surface 30a in the width direction of the band-shaped plate 30, and a pair of second guide portions 44b, 44b that contact both sides of the second surface 30b. This further improves the support stability of the guide member 44 for the band-shaped plate 30, and can more reliably correct the band-shaped plate 30 into an arc shape.

[0088] The display device 10 of this embodiment may include a retractable display panel 12, a winding body 20 for winding up the display panel 12, a winding post 16 that moves back and forth together 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 for winding up the winding post 16. The bobbin 28 may include a winding shaft 34 for winding up the winding post 16, and an outer tubular member 36 having an inner circumferential surface 36a that faces the outer circumferential surface 34a of the winding shaft 34 with a gap G2 between them, and an opening 36b formed in part to serve as an entrance / exit 28a for the winding post 16. The inner circumferential surface 36a of the outer tubular member 36 may be provided with a ring-shaped guide 40 that is narrower than the width of the winding post 16 along the axial direction of the winding shaft 34, extends circumferentially around the inner circumferential surface 36a, and is capable of contacting the winding post 16.

[0089] In such a display device 10, when the winding post 16 is wound onto the bobbin 28, the narrow ring-shaped guide 40 comes into contact with the inner peripheral surface 36a of the outer cylindrical member 36, preventing the winding post 16 from sticking to the inner peripheral surface 36a. This allows the bobbin 28 to wind and unwind the winding post 16 more smoothly.

[0090] In the display device 10 of this embodiment, an opening 36b of the outer tube member 36 constituting the bobbin 28 can be provided with an introduction guide 42 that introduces the winding column 16 into the gap G2 by gradually narrowing the gap G2 in the direction in which the winding column 16 is wound onto the winding shaft 34.

[0091] In such a display device 10, when the winding post 16 is wound onto the bobbin 28, the winding post 16 is wound along the introduction guide 42 immediately after passing through the entrance 28a, preventing it from getting caught on the inner peripheral surface 36a of the outer cylindrical member 36. This allows the bobbin 28 to smoothly wind the winding post 16.

[0092] 6. Description of wirelessly connected electronic component unit Next, the configuration of the wirelessly connected electronic component unit 64 and the display device 10 to which the electronic component unit 64 is attached will be described.

[0093] Fig. 15 is a front view of the display device 10 to which the electronic component unit 64 is attached. Fig. 16A is a schematic rear view of the display device 10 shown in Fig. 15. Fig. 16B is a rear view of the display device 10 shown in Fig. 16A with the display panel 12 rolled up and housed in the housing 14.

[0094] 15 to 16B, the display device 10 can have an electronic component unit 64 attached to the tip portion 12c of the display panel 12. The electronic component unit 64 is a function 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.

[0095] The unit housing 64a is a rod-shaped box made of resin or metal. The unit housing 64a has a compact outer shape that allows it to be placed on the upper surface of the end frame 29. The unit housing 64a can be fixed to the end frame 29, for example, with screws or magnets. The unit housing 64a can also be fixed to the underside of the end frame 29 on the rear surface 12b side of the display panel 12. The unit housing 64a may be formed integrally with the end frame 29. In this case, for example, a box-shaped portion that bulges out toward the rear surface 12b side of the display panel 12 may be provided on the underside of the end frame 29, and electronic components 65, etc. may be housed therein.

[0096] The electronic components 65, the circuit board 66, and the secondary battery 67 are housed in the unit housing 64a. Examples of the electronic components 65 include a webcam, an IR camera, a microphone, a speaker, a TOF (Time of Flight) sensor, a touch sensor, and an LED light. The electronic component unit 64 can be equipped with one or more of these electronic components 65. The electronic component 65 of this embodiment is, for example, a webcam that can be used for web conferences, and its lens 65a faces the Z1-side surface of the unit housing 64a. When the display device 10 uses an IR camera or a TOF sensor as the electronic component 65, it can be used as a trigger to raise the display panel 12, which is in the storage position shown in FIG. 16B. When the display device 10 uses a touch sensor as the electronic component 65, it can be used as a trigger to raise and lower the display panel 12 or as an operating means for performing various control operations.

[0097] The board 66 is a control board for the electronic component unit 64. A communication module 67a is mounted on the board 66. The communication module 67a is a small communication terminal that complies with a predetermined wireless communication standard. Examples of the communication standard of the communication module 67a include Bluetooth (registered trademark) and wireless LAN. The communication module 67a is capable of wireless communication with a predetermined communication module mounted on the control board 52 mounted in the housing 14.

[0098] The secondary battery 67 is, for example, a lithium ion battery. The electronic component unit 64 is disposed at the tip portion 12c of the roll-up display panel 12. The electronic component unit 64 does not have any wiring to the housing 14. Therefore, the electronic component unit 64 is equipped with the secondary battery 67 as its power source.

[0099] The terminal section (first terminal section) 68 has a plurality of terminal pins 66a protruding from the bottom surface of the unit housing 64a. The terminal pins 66a are aligned in the X direction on the rear surface 12b side of the display panel 12. The terminal pins 66a can be movable in the Y direction. In this case, it is preferable that the terminal pins 66a are always elastically biased in the Y2 direction, which is the contact direction with the mating side (terminal section 69). The terminal pins 66a can be configured as pogo pins, for example. The terminal pins 66a are electrically connected to the substrate 66.

[0100] A terminal portion (second terminal portion) 69 faces the top surface 14a of the housing 14 directly below the terminal portion 68. The terminal portion 69 has a plurality of metal pads 69a that come into contact with and are connected to, for example, terminal pins 66a. The metal pads 69a are installed flush with the top surface 14a or slightly recessed therein. The metal pads 69a are electrically connected to the control board 52 housed within the housing 14. The terminal portion 68 on the unit housing 64a side may be composed of a plurality of metal pads, and the terminal portion 69 on the housing 14 side may be composed of terminal pins.

[0101] 16B, terminal portion 68 and terminal portion 69 come into contact with each other at least when display panel 12 is fully wound around winding body 20 (storage position). In the storage position, electronic component unit 64 is arranged such that unit housing 64a is placed on top surface 14a of housing 14, and lens 65a, for example, is available for use.

[0102] When the electronic component unit 64 is in the storage position shown in FIG. 16B , it can charge the secondary battery 67 via the terminals 68, 69 connected to each other. That is, the terminals 68, 69 preferably include a charging terminal. In this case, the electronic component unit 64 is substantially wired to the control board 52 by connecting the terminals 68, 69. Therefore, for example, if an IR camera or a TOF sensor is used as the electronic component 65, user recognition and face authentication can be performed with good communication quality through a wired connection. In this case, the electronic component unit 64 can be used, for example, as a trigger for raising the display panel 12 in the storage position. Note that similar control can be performed when the electronic component 65 is a touch sensor.

[0103] The display device 10 can be equipped with an electronic component unit 64 equipped with electronic components 65 such as a camera, thereby improving UX (User eXperience). The electronic component unit 64 is wirelessly connected to the control board 52. This allows the display device 10 to have electronic components 65 such as a camera installed at the tip 12c of the roll-up display panel 12, improving versatility. The electronic component unit 64 has a terminal 68 that can come into contact with a terminal 69 provided on one surface (top surface 14a) of the housing 14. This allows the electronic component unit 64 to smoothly charge the built-in secondary battery 67 when the display device 10 is in a storage position where it is not in use.

[0104] When the display device 10 raises the display panel 12 from the storage position shown in FIG. 16B to the use position shown in FIG. 16A, the initial operation of the bobbin 28 to raise the winding column 16 places the heaviest load on the driving force required. In this regard, the display device 10 equipped with the electronic component unit 64 has a terminal portion 68 (or 67) formed with a terminal pin (pogo pin) 66a that is elastically biased in the Y2 direction. Therefore, the terminal pin 66a can compensate for the initial driving force required to raise the display panel 12 with its elastic force. Therefore, the display device 10 can be made smaller by further suppressing the output of the electric motor 54, thereby achieving a smaller, lighter, and more energy-efficient device.

[0105] 7. Description of wired electronic component unit Next, the configuration of the wired connection type electronic component unit 70 and the display device 10 to which the electronic component unit 70 is attached will be described.

[0106] Fig. 17 is a perspective view of the display device 10 with the electronic component unit 70 attached, as seen from the rear side. Fig. 18 is an enlarged perspective view of the wiring winding mechanism 76 and its surroundings of the display device 10 shown in Fig. 17. Fig. 19 is a side view schematically showing the configuration of the reel 78. In Figs. 17 and 18, the second pulley 24c and the drive unit 50 that constitute the constant force spring 24 are not shown.

[0107] The electronic component unit 64 shown in Figures 15 to 16B is of a wireless connection type. In contrast, the electronic component unit 70 shown in Figures 17 and 18 is of a wired connection type that is connected to the control board 52 by wire. The electronic component unit 70 can basically be configured the same as or similar to the electronic component unit 64, except that it is connected to the control board 52 by wire. The electronic component unit 70 has a unit housing 70a. The unit housing 70a houses, for example, electronic components 65 and a board 66.

[0108] The electronic component unit 70 is connected to the control board 52 by a wire 74. The wire 74 is a thin, flexible, narrow strip-shaped wire, and can be configured, for example, by an FPC (Flexible Printed Circuits) or an FFC (Flexible Flat Cable).

[0109] The wiring 74 passes through the rear surface 12b of the display panel 12, connecting the electronic component unit 70 and the control board 52. One end of the wiring 74 is connected to the underside of the unit housing 70a and to the board 66. The wiring 74 extends, for example, from the unit housing 70a along the underside of the tip frame 29 in the X2 direction and is drawn into the gap G1 in the winding post 16 on the X2 side (see also FIG. 7B). By passing through the gap G1, the wiring 74 extends in the Y2 direction along the winding post 16 and is drawn from the opening 28a into the gap in the bobbin 28. After passing under the outer tubular member 36, the wiring 74 is connected to the control board 52 via the wiring winding mechanism 76.

[0110] The wire winding mechanism 76 may include a reel 78 and a sag prevention device 79 .

[0111] As shown in FIGS. 18 and 19 , the reel 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 disk that can rotate around a central axis 78d extending in the Z direction. The wiring 74 that has passed through the bobbin 28 is wound around the outer circumferential surface of the large-diameter portion 78a. An elastic body 78c is disposed inside the large-diameter portion 78a, i.e., around the central axis 78d. The elastic body 78c urges the reel 78 to rotate in a direction (X1 direction) that pulls in the wiring 74 that has passed through the bobbin 28. In other words, the reel 78 is constantly urged to rotate counterclockwise in FIG. 18 , constantly urging the wiring 74 that passes through the winding post 16 in the winding direction.

[0112] The small diameter portion 78b is a disk disposed coaxially and integrally on the Z2 side of the large diameter portion 78a. The small diameter portion 78b rotates together with the large diameter portion 78a around a central axis 78d. The wiring 74, which has been wound around the outer peripheral surface of the large diameter portion 78a, is wound around the outer peripheral surface of the small diameter portion 78b. The wiring 74 wound around the small diameter portion 78b is drawn into a flexure prevention device 79.

[0113] The deflection prevention device 79 is a device that absorbs deflection (excess length) of the wiring 74 between the small diameter portion 78b and the control board 52. The deflection prevention device 79 may have, for example, a roll 79a around which the wiring 74 is wound and a bent portion 79b where the wiring 74 is inverted into a U-shape. As will be described later, the excess length of the wiring 74 between the small diameter portion 78b and the control board 52 is significantly shorter than the excess length of the wiring 74 between the large diameter portion 78a and the electronic component unit 70. For this reason, the deflection prevention device 79 may be omitted.

[0114] As shown in FIG. 19, the outer diameter of the outer peripheral surface of the large-diameter portion 78a is referred to as winding diameter D1, and the outer diameter of the outer peripheral surface of the small-diameter portion 78b is referred to as winding diameter D2. In this case, winding diameter D2 is significantly smaller than winding diameter D1. For example, winding diameter D2 can be set to approximately 20% of winding diameter D1. As a result, when the reel 78 rotates, the large-diameter portion 78a can wind up the wire 74 equivalent to the height (e.g., 50 cm) of the display panel 12 in the Y direction shown in FIG. 17 with a small number of rotations (e.g., 3 to 4 rotations). At this time, the small-diameter portion 78b rotates simultaneously with the large-diameter portion 78a. However, the unwinding distance (feeding distance) of the wire 74 from the small-diameter portion 78b to the sag prevention device 79 is the winding distance of the large-diameter portion 78a multiplied by "winding diameter D2 / winding diameter D1." Therefore, the excess length of the wiring 74 between the small diameter portion 78b and the anti-flexure device 79 is sufficiently small, and even if the anti-flexure device 79 were omitted, the excess wiring 74 would not move around inside the housing 14.

[0115] The display device 10 can thus be equipped with an electronic component unit 70 equipped with electronic components 65 such as a camera, thereby improving UX (User Experience). The electronic component unit 70 has wiring 74 to the control board 52 arranged along the winding post 16. This prevents the wiring 74 from being noticeable or obstructive in appearance, and allows the electronic component unit 70 to be reliably connected to the control board 52. Furthermore, by passing the wiring 74 through the gap G1 in the winding post 16, it becomes even less noticeable. Furthermore, passing the wiring 74 through the gap G1 also allows the wiring 74 to be smoothly wound onto and unwound from the reel 78 along with the winding post 16 moving up and down.

[0116] The present invention is not limited to the above-described embodiment, and can of course be freely modified within the scope of the gist of the present invention. [Explanation of symbols]

[0117] 10 Display device 12 Display Panel 14. Case 16 Winding pillar 20 Winding body 24 Constant force spring 28A, 28B bobbin 28a Entrance / exit 29 Tip Frame 30A, 30B Strip Plate 30a 1st page 30b 2nd side 34 Winding shaft 36 Outer cylinder member 40 Ring guide 42 Implementation Guide 44A, 44B Guide member 50 Drive unit 52 Control board 54 Electric motor 56 Gear mechanism 64,70 Electronic component unit 65 Electronic Components 68,69 Terminal section 74 Wiring 78 reels

Claims

1. A display device, The housing and a rollable display panel provided so as to be movable forward and backward from one surface of the housing; a winding body that is housed in the housing and winds up the display panel; a winding post having one end connected to a leading end of the display panel in the unwinding direction, which moves back and forth together with the display panel and can hold the display panel in a position where it is unwound from the winding body; an electronic component unit provided at a leading end of the display panel in the unwinding direction; a control board housed in the housing; a wiring provided along the winding pole and connecting the electronic component unit and the control board; Equipped with the winding post has a gap extending along its longitudinal direction; The wiring is passed through the gap, The winding post has a pair of band-shaped plates each having a concave curved surface on a first surface and a convex portion on a second surface, The pair of band-shaped plates have second surfaces that are closely opposed to each other, The gap is formed between the second surfaces of the pair of band-shaped plates. A display device characterized by:

2. The display device according to claim 1 , The winding pole is disposed on the rear side of the display panel with the width direction of the belt-like plate intersecting the surface direction of the display panel. A display device characterized by:

3. 3. The display device according to claim 1, a reel housed in the housing for winding up the wiring; The reel is elastically biased in a direction in which the wire is wound up. A display device characterized by:

Images