Indication device

Abstract

The present invention provides a retractable display device that can be equipped with electronic components such as a camera. [Solution] The display device comprises a housing, a retractable display panel provided to be movable forward and backward from one side of the housing, a winding body housed in the housing for winding the display panel, an electronic component unit provided at the leading end of the display panel in the unwinding direction, and a control board housed in the housing, wherein the electronic component unit has a first terminal portion at a position facing one side of the housing, and one side of the housing is provided with a second terminal portion connected to the control board, which contacts the first terminal portion when the display panel is most tightly wound relative to the winding body.

Description

Technical Field

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[0001] The present invention relates to a display device including a retractable display panel.

Background Art

[0002] Patent Document 1 discloses a retractable display device. In this display device, a display panel is wound and stored inside a stationary housing, and the display panel is lifted and lowered under the action of a motor using a link mechanism.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

[0007] According to the above embodiment of the present invention, electronic components such as a camera can be mounted on a retractable display device. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view of a display device according to one embodiment. [Figure 2A] Figure 2A is a perspective view of the display device shown in Figure 1, viewed from the rear. [Figure 2B] Figure 2B is a perspective view showing the display panel of the display device shown in Figure 2A rolled up and housed inside the casing. [Figure 3] Figure 3 is a perspective view of the display device shown in Figure 2A with the cover material removed. [Figure 4] Figure 4 is an enlarged perspective view of the bobbins and their surrounding area arranged on the X2 side in Figure 3. [Figure 5] Figure 5 is a rear view of the bobbin and its surrounding area shown in Figure 4. [Figure 6] Figure 6 is a schematic side view of the display device. [Figure 7A] Figure 7A is a schematic cross-sectional view of the strip-shaped plate. [Figure 7B] Figure 7B is a schematic cross-sectional view of the winding column. [Figure 8]FIG. 8 is a schematic view showing an operation of winding two strip plates constituting one winding column around a bobbin. [Figure 9] FIG. 9 is a schematic rear view showing an operation of winding a winding column according to a configuration example in which the directions of the two strip plates are reversed from those of the winding column shown in FIG. 8 around a bobbin. [Figure 10A] FIG. 10A is a perspective view of a bobbin and its peripheral part. [Figure 10B] FIG. 10B is a view in which the winding column is omitted from FIG. 10A. [Figure 11] FIG. 11 is a plan view of a bobbin and its peripheral part. [Figure 12A] FIG. 12A is a perspective sectional view of a bobbin and its peripheral part. [Figure 12B] FIG. 12B is a sectional perspective view of a bobbin and its peripheral part at a position offset to the Z1 side from FIG. 12A. [Figure 13] FIG. 13 is a rear sectional view of a bobbin and its peripheral part. [Figure 14] FIG. 14 is a perspective view of a winding shaft constituting a bobbin and its peripheral part. [Figure 15] FIG. 15 is a front view of a display device to which a wireless connection type electronic component unit is attached. [Figure 16A] FIG. 16A is a schematic rear view of the display device shown in FIG. 15. [Figure 16B] FIG. 16B is a rear view of the display device shown in FIG. 16A with the display panel wound and housed in the housing. [Figure 17] FIG. 17 is a perspective view of a display device to which a wired connection type electronic component unit is attached as viewed from the rear side. [Figure 18] FIG. 18 is an enlarged perspective view of a wiring winding mechanism of the display device shown in FIG. 17 and its peripheral part. [Figure 19] FIG. 19 is a side view schematically showing the configuration of a reel.

MODE FOR CARRYING OUT THE INVENTION

[0009] Hereinafter, a preferred embodiment of the display device according to the present invention will be given, and it will be described in detail while referring to the accompanying drawings. Note that the present invention is not limited by this embodiment.

[0010] 1. Description of the overall configuration of the display device FIG. 1 is a perspective view of a display device 10 according to an embodiment. FIG. 2A is a perspective view of the display device 10 shown in FIG. 1 viewed from the back side. FIG. 2B is a perspective view of the display device 10 shown in FIG. 2A with the display panel 12 wound 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 a state where the display panel 12 is wound out 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 columns 16, 16, and an operation unit 18.

[0012] The display device 10 can be used as an external display device that displays video and images output from an external device such as a personal computer, a tablet terminal, or a smartphone connected by wire or wirelessly 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. By operating the operation unit 18, the display device 10 can drive a drive unit 50 described later to rotate the bobbin 28 forward and backward, and move the display panel 12 up and down from the upper surface 14a of the housing 14. Instead of operating the operation unit 18, the display device 10 can also move the display panel 12 up and down according to a command from the above-described external device, for example. The display device 10 can also manually move the display panel 12 up and down.

[0013] The display panel 12 is a retractable, paper-like flexible display panel. The display panel 12 can be wound onto a winding body 20 housed within the 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 for example it is 32 inches. The front of the display panel 12, as shown in Figure 1, is the display surface 12a, and its back surface 12b is the non-display surface.

[0014] Hereinafter, the display device 10 and its components will be described using the direction as viewed from the user viewing the display surface 12a shown in Figure 1 as the reference point, with the left and right directions 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. The X1 and X2 directions may also be collectively referred to as the X direction, and similarly, the Y1 and Y2 directions and the Z1 and Z2 directions may be referred to as the Y direction and Z direction.

[0015] The display device 10 can be used by placing it on a surface such as a desk or table. The display panel 12 can be moved forward and backward (raised and lowered) between the usage position shown in Figure 1 and the storage position shown in Figure 2B. The display device 10 can be used not only in the position where the display panel 12 is wound up to its highest point as shown in Figure 1, but also in a position where the display panel 12 is wound up slightly lower than in Figure 1, exposing only a part of the display surface 12a. The display device 10 can also be installed so that the housing 14 is housed under the tabletop of a desk, and the display panel 12 can be raised and lowered through an opening formed in the tabletop. The display device 10 can also be used by fixing the bottom surface (Z2 side surface) of the housing 14 to the ceiling, and raising and lowering the display panel 12 while it is suspended.

[0016] As shown in Figures 1 to 3, the housing 14 is a rectangular tubular box that is elongated in the X direction. The housing 14 may include a cover material 14A that forms the top surface 14a and the four sides, and a base plate 14B that forms the bottom surface. The base plate 14B supports the winding body 20, as well as other components such as the bobbin 28, drive unit 50 and control board 52, which will be described later, on its top surface. The cover material 14A is provided so as to cover each component supported by the base plate 14B from above and is connected to the base plate 14B by screws or hooks.

[0017] The cover material 14A may have an opening in the area of ​​the upper surface 14a of the housing 14 that is located on the rear side 12b of the display panel 12. This opening is covered by 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. The housing 14 can be easily maintained internally by removing the cover plate 14C.

[0018] As shown in Figure 3, the winding body 20 is positioned with its axial direction aligned with the longitudinal direction (X direction) of the housing 14. The axial length of the winding body 20 is slightly longer than the X-direction width of the display panel 12. The winding body 20 is pivotally supported by support plates 22a, 22b that are erected 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] Reference numeral 23 in Figure 3 indicates a winding guide for facilitating the winding and unwinding of the display panel 12 relative to the winding body 20. The winding guide 23 is a flap-shaped component with a curved surface. Multiple winding guides 23 are arranged, for example, within the housing 14, across the width direction of the back surface 12b of the display panel 12.

[0020] Figure 4 is an enlarged perspective view of the bobbins 28A and 28B and their surrounding area, arranged on the X2 side in Figure 3. Figure 5 is a rear view of the bobbins 28A and 28B and their surrounding area shown in Figure 4. Figure 6 is a schematic side view of the display device 10. The display panel 12 is omitted from Figure 5. The housing 14 and other components are omitted from Figure 6.

[0021] The winding body 20 is elastically biased to rotate in the direction that winds the display panel 12, that is, clockwise in Figure 6. The display panel 12 receives an upward reaction force from the winding column 16 that resists the biasing force in the winding direction (downward direction) by the winding body 20. This allows the display panel 12 to be held in the usage position shown, for example, in Figure 1.

[0022] The winding body 20 is biased in the winding direction of the display panel 12 by a pair of constant-load springs 24, 24 connected to both the left and right ends, respectively. Since the pair of constant-load springs 24, 24 can have a symmetrical structure, in the following explanation, it may be explained without distinguishing between the left and right constant-load springs 24, 24.

[0023] Side plates 26a and 26b are erected at both the left and right ends of the base plate 14b, parallel to the support plates 22a and 22b, respectively. The constant-load spring 24 is pivotally supported between the support plates 22a and 22b and the side plates 26a and 26b. The constant-load spring 24 may have an elastic band 24a, a first pulley 24b, and a second pulley 24c. The first pulley 24b is coaxially positioned with the winding body 20.

[0024] The second pulley 24c has a smaller diameter than the first pulley 24b and is aligned with the first pulley 24b on the Z2 side. The elastic band 24a is a metal spring material that has bending elasticity that causes it to spiral in its natural state, like a so-called coil spring. The elastic band 24a hardly stretches in the tensile 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 that has been unwound from the first pulley 24b in the spiral direction of its natural state. Such a constant-load spring 24 can always exert a constant elastic force regardless of the amount of elastic band 24a unwound, thereby imparting rotational force to the first pulley 24b. In other words, the constant-load 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-load spring 24 may be provided at only one end of the winding body 20. However, providing the constant-load spring 24 at both ends of the winding body 20 allows for a reduction in the size of each individual constant-load spring 24, contributing to a smaller 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-load springs 24 at both ends has the advantage of making it less prone to twisting around the axis.

[0026] 2. Explanation of the winding column Next, we will explain the configuration of the winding column 16.

[0027] As shown in Figures 2A to 6, two winding columns 16 are installed, for example, on the back 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 and retractable in the Z direction. The winding columns 16 function as supports that hold the display panel 12 in the extended position. The winding columns 16 also function as drive devices for raising and lowering the display panel 12. Since the left and right winding columns 16 can have a symmetrical structure, in the following explanation, it may not be necessary to distinguish between the left and right winding columns 16.

[0028] The winding column 16 has its first longitudinal end 16a connected to the front end 12c of the display panel 12, and its second end 16b connected to bobbins 28A and 28B inside the housing 14. The display panel 12 has a front end frame 29 connected to its front end 16c in the unwinding direction from the winding body 20. The front end frame 29 is an overhang-shaped frame member that extends outwards to the back side 12b of the display panel 122 and is made of metal or resin. The front end 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 column 16 is fixed to the Z2 side of the front end frame 29 with screws or the like, thereby connecting it to the display panel 12. The bobbins 28A and 28B are rotating shafts that wind and unwind the winding column 16, but details will be described later.

[0029] A single winding column 16 can be constructed from a pair of strip-shaped plates 30A and 30B. Since the two strip-shaped plates 30A and 30B that make up a single winding column 16 can have a symmetrical structure, they may be collectively referred to as "strip-shaped plate 30" in the following explanation.

[0030] Figure 7A is a schematic cross-sectional view of the strip plate 30. Figure 7B is a schematic cross-sectional view of the winding column 16. Figure 8 is a schematic diagram showing the operation of winding two strip plates 30A and 30B that constitute one winding column 16 onto bobbins 28A and 28B.

[0031] As shown in Figures 3 to 7B, the strip-shaped plate 30 is a narrow, thin, strip-shaped plate member that can extend along the vertical direction of the back surface 12b of the display panel 12. The strip-shaped plate 30 can be constructed with an arc-shaped cross-section similar to that of a metal measuring tape, such as a convex tape measure. The strip-shaped plate 30 can be wound onto bobbins 28A and 28B. When unwound, the strip-shaped plate 30 stands upright in the Y direction and can hold the display panel 12 in the usage position against the biasing force in the winding direction by the winding body 20.

[0032] The winding column 16 can be positioned such that the width direction of each strip-shaped plate 30 intersects (orthogonal in this embodiment) with the surface direction of the back surface 12b of the display panel 12. The strip-shaped plate 30 has a concave curved surface 30a1 on its first surface 30a and a convex portion 30b1 protruding toward the center in the width direction on its second surface 30b. As a result, the strip-shaped plate 30 has a cross-sectional shape that is curved in an arc shape. When the strip-shaped plate 30 is wound onto bobbins 28A and 28B, the curved surface 30a1 and the convex portion 30b1 are flattened, and it is formed into a flat shape.

[0033] As shown in Figure 7A, the arc-shaped strip plate 30 is weak against bending load F1 on the first surface 30a side and strong against bending load F2 on the second surface 30b side. In other words, the strip plate 30 is easily bent on the first surface 30a side and difficult to bent on the second surface 30b side. Therefore, as shown in Figures 4, 7B, and 8, the two strip plates 30A and 30B that constitute a single winding column 16 are arranged facing each other with their second surfaces 30b close together. As a result, the winding column 16 as a whole has a roughly X-shaped cross-section and has high rigidity against bending loads in both the X1 and X2 directions.

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

[0035] As shown in Figure 9, the two strip-shaped plates 30A and 30B that constitute a single winding column 16 can also be configured so that their first surfaces 30a face each other. In this case, the winding column 16 as a whole has a substantially elliptical cross-sectional shape and has high rigidity against bending loads in both the X1 and X2 directions. However, the winding column 16 shown in Figure 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. For this reason, the configuration example shown in Figure 9 has a larger overall cross-sectional area of ​​the winding column 16, including the bobbins 28A and 28B, compared to the configuration example shown in Figure 8. Also, in the configuration example shown in Figure 9, a gap equal to the width of the bobbins 28A and 28B side by side is required between the two strip-shaped plates 30A and 30B. For this reason, the apparent cross-sectional area of ​​a single winding column 16 is larger in the configuration example shown in Figure 9 compared to the configuration example shown in Figure 8.

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

[0037] Figure 10A is a perspective view of bobbins 28A, 28B and their surrounding areas. Figure 10B is a view of Figure 10A with the winding column 16 omitted. Figure 11 is a plan view of bobbins 28A, 28B and their surrounding areas. Figure 12A is a perspective cross-sectional view of bobbins 28A, 28B and their surrounding areas. Figure 12B is a cross-sectional perspective view of bobbins 28A, 28B and their surrounding areas at a position offset to the Z1 side compared to Figure 12A. Figure 13 is a rear cross-sectional view of bobbins 28A, 28B and their surrounding areas. Figure 14 is a perspective view of the winding shaft 34 and its surrounding areas that constitute bobbins 28A, 28B. The display panel 12 is omitted from Figure 11. Figures 12A to 13 show the cross-sectional shapes of bobbins 28A, 28B and their surrounding areas cut in the XY plane. The winding column 16 is omitted from Figures 12A and 12B. Figure 14 omits the illustration of the outer cylindrical member 36 that constitutes the bobbins 28A and 28B.

[0038] As shown in Figures 3 and 4, bobbins 28A and 28B are used in pairs for each winding column 16. One bobbin 28A can wind up one strip plate 30A. The other bobbin 28A can wind up the other strip plate 30B. The two bobbins 28A and 28B are positioned side by side in the X direction directly below the winding column 16 on the back side 12b of the display panel 12. The axial directions of bobbins 28A and 28B are aligned along the Z direction. Since the left and right bobbins 28A and 28B can be symmetrical, they may be referred to collectively as "bobbin 28" without distinguishing between the left and right bobbins 28A and 28B in the following explanation.

[0039] As shown in Figures 10A to 14, the bobbin 28 may have a winding shaft 34 and an outer cylindrical member 36.

[0040] The winding shaft 34 is a rotating shaft that winds the strip-shaped plate 30 onto its outer surface 34a. When the shaft 34b fitted to the center of the winding shaft 34 is rotationally driven, the winding shaft 34 rotates integrally with the shaft 34b. Preferably, the winding shaft 34 is made 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-shaped plate 30 in the bobbin 28, allowing for 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 with the Z direction. The shaft 34b is rotated in both forward and reverse directions by the drive unit 50, but details will be described later.

[0041] The outer cylinder member 36 is a housing that encloses and covers the strip-shaped plate 30 wound along the outer circumferential surface 34a of the winding shaft 34. The outer cylinder member 36 has an inner circumferential surface 36a that faces the outer circumferential surface 34a of the winding shaft 34 with a gap G2 between them. The gap G2 needs to be wide (spacing) such that the strip-shaped plate 30, when wound to its maximum extent on the winding shaft 34, does not get stuck between the surfaces 34a and 36a. The strip-shaped plate 30 has a first surface 30a with a curved surface 30a1 that faces the outer circumferential surface 34a of the winding shaft 34, and a second surface 30b with a convex portion 30b1 that faces the inner circumferential surface 36a of the outer cylinder member 36.

[0042] The outer cylinder member 36 has an opening 36b in a part of its inner circumferential surface 36a that extends circumferentially around the winding shaft 34. The opening 36b is located directly below the strip-shaped plate 30. The opening 36b forms an entrance / exit 28a for the strip-shaped plate 30 to the bobbin 28. In this embodiment, the outer cylinder member 36 has a substantially spectacle shape when viewed from the front and integrally encloses the winding shafts 34 of the left and right bobbins 28A and 28B. Therefore, the openings 36b of the left and right bobbins 28A and 28B are positioned opposite each other, and the two openings 36b, 36b as a whole form a common entrance / exit 28a for the left and right bobbins 28A and 28B. The outer cylinder member 36 may be formed in a cylindrical shape and one may be installed on each of the left and right bobbins 28A and 28B.

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

[0044] First, the ring-shaped guide 40 is provided so as to protrude inward from the inner circumferential surface 36a of the outer cylindrical member 36 and extends circumferentially along the inner circumferential surface 36a. The width dimension of the ring-shaped guide 40 along the axial direction of the winding shaft 34 is narrower than the width dimension of the strip-shaped plate 30. If the width dimension of the strip-shaped plate 30 is, for example, about 10 mm, the width dimension 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-shaped plate 30 wound on the winding shaft 34. Line contact in this case may include contact with a narrow, linear surface. This prevents the ring-shaped guide 40 from sticking to the inner circumferential surface 36a, which would hinder smooth winding or unwinding. In other words, the strip-shaped plate 30 has the property of returning to an arc shape and expanding away from the outer circumferential surface 34a of the winding shaft 34 if there is no tensile force in the unwinding direction. Therefore, if the inner circumferential surface 36a of the outer cylinder member 36 is formed as a smooth surface equal to or greater than the width dimension of the strip-shaped plate 30, the strip-shaped plate 30 may stick to the inner circumferential surface 36a during winding and become immobile. The ring-shaped guide 40 makes point or line contact with the second surface 30b of the strip-shaped plate 30, preventing it from sticking to the inner circumferential surface 36a.

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

[0047] As shown in Figure 12A, the ring-shaped guides 40 can be arranged in pairs in the width direction (Z direction) of the inner circumferential surface 36a with a gap G3 between them. In this case, the pair of ring-shaped guides 40, 40 can be positioned opposite each other on both sides in the width direction of the strip-shaped plate 30. In this case, with the convex portion 30b1 of the second surface 30b positioned in the gap G3, both sides of the second surface 30b in the width direction will be in contact with the pair of ring-shaped guides 40, 40. This allows the pair of ring-shaped guides 40, 40 to suppress the sticking of the strip-shaped plate 30 to the inner circumferential surface 36a. Furthermore, the pair of ring-shaped guides 40, 40 can also properly flatten the strip-shaped plate 30 wound on the winding shaft 34 and correct it into a flat shape. Only one ring-shaped guide 40 may be provided in the width direction of the inner circumferential surface 36a, in which case it is preferable to position it opposite the center of the second surface 30b.

[0048] Next, the introduction guide 42 protrudes from the inner circumferential surface 36a of the outer cylinder member 36 at a position facing the opening 36b where a part of the inner circumferential surface 36a of the outer cylinder member 36 is interrupted. The introduction guide 42 is located on the lower side (Y2 side) of the opening 36b, that is, directly below the entrance / exit 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. As shown in Figure 12A, if a pair of ring-shaped guides 40 are provided with a gap G3 in between in the axial direction of the winding shaft 34, it is preferable that a pair of introduction guides 42 be provided similarly with a gap G3 in between.

[0049] The introduction guide 42 is a substantially tapered contact guide that gradually narrows the gap G2 in the direction in which the strip plate 30 is wound onto the winding shaft 34, thereby smoothly introducing the strip plate 30 into the gap G2. The introduction guide 42 is inclined to trace a parabola (quadratic curve) from the lowest part of the inner circumferential surface 36a of the outer cylinder member 36 (the part located furthest towards Y2) towards the opening 36b. As a result, the width (height) of the gap G2 expands in a tapered manner from the lowest part of the inner circumferential surface 36a towards the opening 36b, as if opening up.

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

[0051] Such an introduction guide 42 prevents the strip-shaped plate 30 from hitting the inner circumferential surface 36a of the outer cylindrical member 36 directly below the entrance / exit 28a (opening 36b), which would prevent smooth winding. In other words, as described above, the strip-shaped plate 30 has the property of expanding away from the outer circumferential surface 34a of the winding shaft 34. Also, the strip-shaped plate 30 has a certain degree of curved shape immediately after passing through the entrance / exit 28a, that is, before it is flattened into a planar shape. Therefore, if the gap G2 is formed at a uniformly narrow interval near the entrance / exit 28a, there is a concern that the strip-shaped plate 30 will hit the inner circumferential surface 36a, preventing smooth winding. The introduction guide 42 therefore smoothly guides the strip-shaped plate 30 into the gap G2, enabling smooth winding onto the winding shaft 34.

[0052] In this configuration, the introduction guide 42 is narrower than the strip-shaped plate 30, similar to the ring-shaped guide 40. This allows the introduction guide 42 to contact the strip-shaped plate 30 at points or along a line, preventing it from sticking to the inner circumferential surface 36a, thus making winding even smoother. Furthermore, the bobbin 28's uneven shape 40a continues to the introduction guide 42, enabling even smoother winding of the strip-shaped plate 30.

[0053] In this embodiment, the openings 36b of the left and right bobbins 28A and 28B face each other, forming a single large opening, the entrance / exit 28a. Therefore, the outer cylinder member 36 can be formed from the same common part for both the left and right bobbins 28A and 28B. In this case, the respective introduction guides 42 and 42 for the left and right bobbins 28A and 28B can also be formed integrally. In other words, the introduction guides 42 and 42 for the left and right bobbins 28A and 28B can be formed in a mountain shape when viewed from the front as a whole (see Figure 13). This simplifies and miniaturizes the structure of the bobbins 28A and 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, it is preferable that the ring-shaped guide 40 and the introduction guide 42, like the winding shaft 34, be 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, preventing noise and snagging during winding.

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

[0056] Guide member 44A is provided so as to cover a portion of the entrance 28a of the strip-shaped plate 30A and is a member that supports the base portion of the strip-shaped plate 30A. Guide member 44B is provided so as to cover a portion of the entrance 28a of the strip-shaped plate 30B and is a member that supports the base portion of the strip-shaped plate 30B. Since the left and right guide members 44A and 44B can have a symmetrical structure, in the following explanation, they may be collectively referred to as "guide member 44" without distinguishing between the left and right guide members 44A and 44B.

[0057] The guide member 44 can be fixed to the outer cylinder member 36 so as to form a part of the upper surface of the bobbin 28 (see 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 can make point or line contact with a single strip-shaped plate 30 with its three guide portions 44a, 44b. Line contact in this case may include contact with a narrow, linear surface.

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

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

[0060] The guide member 44 supports the base portion of the strip-shaped plate 30. As a result, the base portion of the strip-shaped plate 30, which is prone to shaking when supporting the display panel 12 in its usage position, is supported by the guide member 44, further improving the support stability of the display panel 12. Furthermore, the guide member 44 can correct the base portion of the strip-shaped plate 30 into an arc shape immediately after it is unwound from the flattened and wound bobbin 28. As a result, the strip-shaped plate 30 is formed in an arc shape that is resistant to bending up to its base portion, further improving its stability in the unwound state.

[0061] In this embodiment, the left and right bobbins 28A and 28B have their openings 36b facing each other, forming one large opening, the entrance / exit 28a. The guide members 44A and 44B as a whole have a roughly X-shaped cutout hole, and can simultaneously support two strip-shaped plates 30A and 30B that are passed through this hole, respectively. 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 guide members 44A and 44B have a second guide portion 44b that supports both sides of the two strip-shaped plates 30A and 30B in the width direction, which is formed on the same part (second member 47). As a result, the guide members 44A and 44B can set the relative positional relationship of the two strip-shaped plates 30A and 30B with greater precision, improving the straightness and stability of the winding column 16 in which the two strip-shaped plates 30A and 30B are arranged back to back.

[0062] As described above, the guide member 44 comes into contact with the metal strip-shaped plate 30. Therefore, it is preferable that the guide member 44, like the winding shaft 34 and the ring-shaped guide 40, be made of a self-lubricating resin (sliding material) such as polyacetal (POM), polytetrafluoroethylene (PTFE), or polyamide (PA). This reduces the sliding resistance of the metal strip-shaped plate 30, thereby suppressing noise and snagging during winding and unwinding.

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

[0064] The flat surface 34a1 allows the second end 16b of the strip-shaped plate 30 to be stably and securely fixed with screws 49. The flat surface 34a1 can be covered with an arc block 34a2 having a roughly crescent shape similar to the shape of the remaining part after cutting the flat surface 34a1 from above the fixed strip-shaped plate 30. The arc block 34a2 can be fastened together with the strip-shaped plate 30 with screws 49. This allows the winding shaft 34 to connect the strip-shaped plate 30 more stably. Furthermore, the winding shaft 34 can more reliably deform the curved shape of the winding strip-shaped plate 30 into a flat shape.

[0065] 4. Explanation of the drive unit Next, we will describe the configuration 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.

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

[0067] The control board 52 constitutes the control unit that controls the display device 10. The control board 52 is equipped with various electronic components, including a CPU, memory, and power supply components. The control board 52 can receive operation signals from the operation unit 18 and rotate the electric motor 54. The control board 52 is connected to an external power supply via a power cord 58 (see Figure 2A) connected to a predetermined power supply unit. The electric motor 54 is a motor that can rotate in both forward and reverse directions. Under the control of the control board 52, which receives operation signals from the operation unit 18, the electric motor 54 rotates the bobbin 28 via a gear mechanism 56, thereby raising and lowering the winding column 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 reduction gear with multiple gears meshed together, and it reduces the output of the electric motor 54 and transmits it to the gear shaft 62, causing it to rotate.

[0069] The gear shaft 62 may have a metal shaft 62a extending over substantially the entire length of the housing 14 in the X direction, and a plurality of gears 62b, 62c, and 62d fitted onto the metal shaft 62a. The metal shaft 62a is supported by a plurality of bearing portions 62e that are upright on the base plate 14B and aligned in the X direction, and is rotatable around its axis. The metal shaft 62a extends so as to pass through the Z2 side of each bobbin 28. Gear 62b meshes with the gear set 60. Gear 62b is a drive gear that rotates the metal shaft 62a by receiving the output of the electric motor 54 which has been reduced by the gear set 60. Gears 62c and 62d are located near the shafts 34b of bobbins 28A and 28B, respectively. Gears 62c and 62d are bevel gears that rotate around the axis of the metal shaft 62a. Each bobbin 28 has a bevel gear 34c fitted to 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 gear 34c of each shaft 34b, transmitting the rotation of the metal shaft 62a to the shaft 34b and causing the bobbin 28 to rotate.

[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 Figure 2B, 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. This causes the winding column 16 to unwind from the bobbin 28. The winding column 16, unwound from the bobbin 28, gradually rises from the upper surface 14a of the housing 14. At this time, the winding column 16 pushes the display panel 12 upward in the Y1 direction against the biasing force in the Y2 direction by the winding body 20.

[0072] For example, when the display panel 12 reaches the usage position shown in Figure 2A, the rotation of the electric motor 54 stops. At this time, the winding column 16 is held in the raised position shown in Figure 2A by the meshing resistance of each gear constituting the gear mechanism 56, and thus stands upright stably in the Y direction. As a result, the flexible display panel 12 is reliably held in the usage position by the winding column 16, and the desired video or image can be displayed. In this state, the display panel 12 is constantly biased in the winding direction (Y2 direction) by the winding body 20. In other words, the winding column 16 applies a reaction force in the Y1 direction to the tip 12c of the display panel 12 that opposes the biasing force in the Y2 direction from the winding body 20. As a result, when the display panel 12 is in the usage position, the balance of forces between the lower end being pulled downward from the winding body 20 and the upper end being pushed upward by the winding column 16 allows the display surface 12a to be formed into a uniform 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 operating position shown in Figure 2A, the electric motor 54 rotates in the opposite direction under the control of the control board 52, causing the bobbin 28 to rotate in the winding direction via the gear mechanism 56. This causes the winding column 16 to be wound onto the bobbin 28. As the winding column 16 is wound onto the bobbin 28, it is gradually drawn into the housing 14. At this time, the winding column 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 power consumption of the electric motor 54.

[0074] When the display panel 12 is in the storage position shown in Figure 2B, the rotation of the electric motor 54 stops. In this state, the display device 10 is made smaller as the display panel 12 and winding column 16 are housed within the rod-shaped housing 14, making it easy to store and transport.

[0075] 5. Explanation of the operation and effects of the display device Next, the effects and benefits of such a display device 10 will be explained.

[0076] The display device 10 of this embodiment may include a retractable display panel 12, a winding body 20 for winding the display panel 12, a winding column 16 whose first end 16a is connected to the leading end 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 the position unwinding from the winding body 20, and a bobbin 28 to which the second end 16b of the winding column 16 is connected for winding the winding column 16.

[0077] As described above, the display device 10 of this embodiment is equipped with a winding column 16 that can be wound onto a bobbin 28 as a support column for the windable display panel 12. Therefore, the display device 10 can support the display panel 12 without using a large link mechanism such as a pantograph structure, and the overall size and weight of the device can be reduced. Furthermore, the display device 10 can support the display panel 12 with a simple winding column 16. Therefore, the display device 10 can use a small electric motor 54 to drive the winding column 16 (bobbin 28), and power saving can be achieved.

[0078] The winding column 16 is wound onto a separate bobbin 28 from the winding body 20 of the display panel 12. This allows the display device 10 to be connected to each other simply by assembling the display panel 12 and the winding column 16 individually into the housing 14, and then fixing the first end 16a of the winding column 16 to the tip frame 29. As a result, the display device 10 is easier to assemble and maintain.

[0079] The winding column 16 can have a pair of strip-shaped plates 30A and 30B, each having a concave curved surface 30a1 on its first surface 30a and a convex portion 30b1 on its second surface 30b. The display device 10 can be made even smaller and lighter by composing the winding column 16 with strip-shaped plates 30A and 30B.

[0080] In this configuration, the pair of strip-shaped plates 30A and 30B are arranged with their first surfaces 30a or second surfaces 30b facing each other. That is, the strip-shaped plate 30, having an arc-shaped cross-section, is easily bent under a bending load F1 on the first surface 30a side where the curved surface 30a1 is formed, and is resistant to bending under a bending load F2 on the second surface 30b side where the convex portion 30b1 is formed. Therefore, the winding column 16 arranges the two strip-shaped plates 30A and 30B symmetrically 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-shaped 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-shaped plates 30A and 30B that constitute the winding column 16 may be placed with a large gap between them. For example, the winding column 16 on the X1 side shown in Figure 2A may be made up of only strip-shaped plate 30A, and the winding column 16 on the X2 side shown in Figure 2A may be made up of only strip-shaped plate 30B. In this case as well, the winding column 16 can support the display panel 12 with high stability due to the bending characteristics of the two strip-shaped plates 30A and 30B. However, it is preferable that the two strip-shaped plates 30A and 30B that constitute a single winding column 16 be placed close to each other. This prevents hands or surrounding objects from accidentally entering between the strip-shaped plates 30A and 30B and coming into contact with one of the strip-shaped plates 30A or 30B, which could cause it to bend.

[0082] The winding column 16 can be positioned on the back side 12b of the display panel 12 with the width direction of the pair of strip-shaped plates 30A and 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 Figure 1). In addition, since the bobbins 28A and 28B for winding the strip-shaped plates 30A and 30B can be arranged in the X direction on the back side 12b, the Z-direction dimension of the housing 14 can be reduced. Furthermore, compared to the case where the strip-shaped plates 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, contributing to a narrower bezel width for the display panel 12.

[0083] The display device 10 may include a constant-load 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 in at least the direction of feeding out the winding column 16, and a gear mechanism 56 that transmits the driving force of the electric motor 54 to the bobbin 28. In this configuration, the biasing force from the winding body 20 and the reaction force from the winding column 16 are balanced, improving the stability of the display panel 12 at the point of use. Furthermore, the meshing resistance of the gear mechanism 56 allows the winding column 16 (display panel 12) to be held in the raised position, reducing the load on the electric motor 54 and enabling its miniaturization.

[0084] In other words, the display device 10 does not need to hold the winding column 16 that holds the display panel 12 with a mechanical locking mechanism. Therefore, if the display panel 12 in the operating position is subjected to a forceful downward pressure, the gear mechanism 56 is forcibly driven to lower the display panel 12 when it receives a load exceeding a predetermined load. As a result, the display device 10 avoids damage to the winding column 16 or the display panel 12 due to unintended loads.

[0085] The display device 10 of this embodiment may include a retractable display panel 12, a winding body 20 for winding the display panel 12, a winding column 16 that moves back and forth with the display panel 12 and can hold the display panel 12 in a position where it has been unwound from the winding body 20, and a bobbin 28 for winding the winding column 16. The winding column 16 may have a strip-shaped plate 30 having an arc-shaped cross-sectional shape, provided that a concave curved surface 30a1 is provided on the first surface 30a and a convex portion 30b1 is provided on the second surface 30b. Furthermore, the display device 10 may include a guide member 44 provided at the entrance / exit 28a of the strip-shaped plate 30 relative to the bobbin 28. The guide member 44 corrects the strip-shaped plate 30 to an arc-shaped cross-sectional shape by making point contact with the first surface 30a and the second surface 30b of the strip-shaped plate 30, or by making line contact along the longitudinal direction of the strip-shaped plate 30.

[0086] In this type of display device 10, the guide member 44 makes point or line contact with the base portion of the strip-shaped plate 30 that constitutes the winding column 16 unwound from the inlet / outlet 28a of the bobbin 28. As a result, the winding column 16 is supported by the guide member 44 at the base portion of the strip-shaped plate 30, further improving the support stability of the display panel 12. Furthermore, the guide member 44 straightens the base portion of the strip-shaped plate 30 into an arc shape immediately after it is unwound from the bobbin 28. As a result, the entire length of the winding column 16 in the upright direction, including the base portion of the strip-shaped plate 30, is formed into an arc shape that is resistant to bending, further improving the stability in the unwound state.

[0087] 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-shaped plate 30, and a pair of second guide portions 44b, 44b that contact both sides of the second surface 30b. In this case, the guide member 44 can further improve the support stability of the strip-shaped plate 30 and make it possible to straighten the strip-shaped plate 30 into an arc shape more reliably.

[0088] The display device 10 of this embodiment may include a retractable display panel 12, a winding body 20 for winding the display panel 12, a winding column 16 that moves back and forth with the display panel 12 and can hold the display panel 12 in a position where it has been unwound from the winding body 20, and a bobbin 28 for winding the winding column 16. The bobbin 28 may have a winding shaft 34 for winding the winding column 16, and an outer cylindrical 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 having an opening 36b formed in part that serves as an entrance / exit 28a for the winding column 16. The inner circumferential surface 36a of the outer cylindrical member 36 may be provided with a ring-shaped guide 40 that is narrower than the width dimension of the winding column 16 along the axial direction of the winding shaft 34, extends in the circumferential direction of the inner circumferential surface 36a and can contact the winding column 16.

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

[0090] In this embodiment, the display device 10 is provided with an introduction guide 42 at the opening 36b of the outer cylindrical member 36 that constitutes the bobbin 28. This guide gradually narrows the gap G2 in the direction in which the winding column 16 is wound onto the winding shaft 34, thereby introducing the winding column 16 into the gap G2.

[0091] In this type of display device 10, when the winding column 16 is wound onto the bobbin 28, the winding column 16 is wound along the introduction guide 42 immediately after passing through the entrance / exit 28a, preventing it from getting caught on the inner circumferential surface 36a of the outer cylindrical member 36. As a result, the bobbin 28 can wind the winding column 16 smoothly.

[0092] 6. Description of Wireless Connected Electronic Component Units 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] Figure 15 is a front view of the display device 10 with the electronic component unit 64 attached. Figure 16A is a schematic rear view of the display device 10 shown in Figure 15. Figure 16B is a rear view of the display device 10 shown in Figure 16A with the display panel 12 rolled up and housed in the housing 14.

[0094] As shown in Figures 15 to 16B, the display device 10 can have an electronic component unit 64 attached to the tip 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 may have a unit housing 64a, electronic components 65, a circuit board 66, a secondary battery 67, and a terminal section 68.

[0095] The unit housing 64a is a rod-shaped box made of resin or metal. The unit housing 64a has a compact external shape that can be placed on the upper surface of the tip frame 29. The unit housing 64a can be fixed to the tip frame 29, for example, with screws or magnets. The unit housing 64a can also be fixed to the lower surface of the tip frame 29 on the rear surface 12b side of the display panel 12. The unit housing 64a may be formed integrally with the tip 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 lower surface side of the tip 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 within the unit housing 64a. Examples of electronic components 65 include a webcam, an IR camera, a microphone, a speaker, a TOF (Time of Flight) sensor, a touch sensor, or an LED light. The electronic component unit 64 can mount one or more of these electronic components 65. In this embodiment, the electronic component 65 is, for example, a webcam that can be used for web conferencing, and the lens 65a faces the Z1 side surface of the unit housing 64a. When the electronic component 65 is an IR camera or a TOF sensor, the display device 10 can be used as a trigger to raise the display panel 12, which is in the storage position shown in Figure 16B. When the electronic component 65 is a touch sensor, the display device 10 can be used as a trigger to raise and lower the display panel 12 or as an operating means for various control operations.

[0097] The circuit board 66 is the control board for the electronic component unit 64. A communication module 67a is mounted on the circuit board 66. The communication module 67a is a small communication terminal that supports a predetermined wireless communication standard. Examples of the communication standard for the communication module 67a include Bluetooth® or wireless LAN. The communication module 67a can communicate wirelessly with a predetermined communication module mounted on the control board 52, which is mounted inside the housing 14.

[0098] The secondary battery 67 is, for example, a lithium-ion battery. The electronic component unit 64 is located at the tip 12c of the retractable display panel 12. This electronic component unit 64 does not have any wiring to the housing 14. Therefore, the electronic component unit 64 is equipped with a 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 lower surface of the unit housing 64a. The terminal pins 66a are aligned in the X direction on the back 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 toward the Y2 direction, which is the direction of contact with the mating side (terminal section 69). The terminal pins 66a can be made up of, for example, pogo pins. The terminal pins 66a are electrically connected to the substrate 66.

[0100] On the upper surface 14a of the housing 14, a terminal section (second terminal section) 69 is located directly below the terminal section 68. The terminal section 69 has a plurality of metal pads 69a to which, for example, terminal pins 66a make contact and are connected. The metal pads 69a are installed flush with the upper surface 14a or slightly recessed. The metal pads 69a are electrically connected to the control board 52 housed inside the housing 14. The terminal section 68 on the unit housing 64a side may be composed of a plurality of metal pads, and the terminal section 69 on the housing 14 side may be composed of terminal pins.

[0101] As shown in Figure 16B, terminals 68 and 69 are in contact with each other at least when the display panel 12 is fully wound onto the winding body 20 (storage position). In the storage position, the electronic component unit 64 is positioned 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.

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

[0103] The display device 10 can be equipped with an electronic component unit 64 that has electronic components 65 such as a camera, thus improving the user experience (UX). The electronic component unit 64 is wirelessly connected to the control board 52. This allows the display device 10 to install electronic components 65 such as a camera at the tip 12c of the retractable display panel 12, improving its versatility. The electronic component unit 64 has a terminal portion 68 that can contact a terminal portion 69 provided on one side (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 not in use.

[0104] Incidentally, when the display device 10 raises the display panel 12 from the storage position shown in Figure 16B to the usage position shown in Figure 16A, the driving force required to raise the winding column 16 by the bobbin 28 is highest during the initial operation. In this regard, the display device 10 equipped with the electronic component unit 64 has terminals 68 (or 67) formed by terminal pins (pogo pins) 66a that are elastically biased in the Y2 direction. Therefore, the terminal pins 66a can compensate for the initial driving force required to raise the display panel 12 with their elastic force. As a result, the display device 10 can be miniaturized by further suppressing the output of the electric motor 54, and the device can be made smaller, lighter, and more power-efficient.

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

[0106] Figure 17 is a perspective view of the display device 10 with the electronic component unit 70 attached, viewed from the rear. Figure 18 is an enlarged perspective view of the wiring winding mechanism 76 and its surrounding area of ​​the display device 10 shown in Figure 17. Figure 19 is a schematic side view showing the configuration of the reel 78. Figures 17 and 18 omit illustrations of the second pulley 24c and drive unit 50, which constitute the constant load spring 24.

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

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

[0109] The wiring 74 passes through the back surface 12b of the display panel 12 and connects 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. For example, the wiring 74 extends from the unit housing 70a along the underside of the tip frame 29 in the X2 direction and is drawn into the gap G1 of the winding column 16 on the X2 side (see also Figure 7B). By passing through the gap G1, the wiring 74 extends along the winding column 16 in the Y2 direction and is drawn into the gap inside the bobbin 28 from the entrance / exit 28a. After passing under the outer cylindrical member 36, the wiring 74 is connected to the control board 52 via the wiring winding mechanism 76.

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

[0111] As shown in Figures 18 and 19, the reel 78 may have a large-diameter portion 78a, a small-diameter portion 78b, and an elastic body 78c. The large-diameter portion 78a is a disc that can rotate around a central axis 78d extending in the Z direction. Wiring 74 that has passed through the bobbin 28 is wound around the outer surface of the large-diameter portion 78a. An elastic body 78c is interposed inside the large-diameter portion 78a, that is, around the central axis 78d. The elastic body 78c biases the reel 78 to rotate in the direction that pulls the wiring 74 that has passed through the bobbin 28 towards it (X1 direction). In other words, the reel 78 is constantly biased to rotate counterclockwise in Figure 18, and constantly biases the wiring 74 passing through the winding column 16 in the winding direction.

[0112] The small-diameter section 78b is a disc integrally and coaxially arranged on the Z2 side of the large-diameter section 78a. The small-diameter section 78b rotates together with the large-diameter section 78a around the central axis 78d. The wiring 74, which has been wrapped around the outer surface of the large-diameter section 78a, is wound around the outer surface of the small-diameter section 78b. The wiring 74 wrapped around the small-diameter section 78b is pulled into the deflection prevention device 79.

[0113] The deflection prevention device 79 is a device that absorbs the deflection (excess length) of the wiring 74 between the small-diameter section 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 section 79b in which 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 section 78b and the control board 52 is significantly smaller than the excess length of the wiring 74 between the large-diameter section 78a and the electronic component unit 70. For this reason, the deflection prevention device 79 may be omitted.

[0114] As shown in Figure 19, the outer diameter of the outer surface of the large-diameter section 78a is referred to as the winding diameter D1, and the outer diameter of the outer surface of the small-diameter section 78b is referred to as 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. As a result, when the reel 78 rotates, the large-diameter section 78a can wind up the wiring 74 equivalent to the Y-direction height of the display panel 12 shown in Figure 17 (for example, 50 cm) in a small number of rotations (for example, 3 to 4 rotations). At that time, the small-diameter section 78b rotates simultaneously with the large-diameter section 78a. However, the winding distance (feed-out distance) of the wiring 74 from the small-diameter section 78b to the deflection prevention device 79 is the winding distance of the large-diameter section 78a multiplied by "winding diameter D2 / winding diameter D1". Therefore, the excess length of the wiring 74 between the small-diameter section 78b and the deflection prevention device 79 is sufficiently small, and even if the deflection prevention device 79 were omitted, the excess wiring 74 within the housing 14 would not be able to move around freely.

[0115] The display device 10 can be equipped with an electronic component unit 70 that includes electronic components 65 such as a camera, thereby improving the user experience (UX). The electronic component unit 70 has wiring 74 to the control board 52 provided along the winding column 16. This allows the display device 10 to reliably connect the electronic component unit 70 to the control board 52 while minimizing the visibility and obstruction of the wiring 74. Furthermore, the wiring 74 becomes even less noticeable by passing it through the gap G1 in the winding column 16. In addition, by passing the wiring 74 through the gap G1, the wiring 74 can be smoothly wound onto and unwound from the reel 78 together with the rising and falling winding column 16.

[0116] The present invention is not limited to the embodiments described above, and can be freely modified without departing from the spirit of the invention. [Explanation of Symbols]

[0117] 10 Display device 12 Display Panels 14 cabinets 16 Retractable Pillars 20 Winding body 24 Constant load spring 28A, 28B bobbins 28a Entrance / exit 29. Tip frame 30A, 30B Strip Plate 30a 1st page 30b 2nd side 34 Reeling shaft 36 Outer cylinder member 40 Ring-shaped guides 42. Introduction Guide 44A, 44B Guide members 50 Drive unit 52 Control board 54 Electric motor 56 Gear mechanism 64,70 Electronic component units 65 Electronic Components 68,69 Terminal section 74 Wiring 78 reels

Claims

1. A display device, The casing and A retractable display panel is provided on one side of the housing so as to be able to move forward and backward, A winding body housed in the aforementioned housing and for winding up the display panel, An electronic component unit provided at the leading edge of the display panel in the unwinding direction, The control board housed in the aforementioned enclosure, Equipped with, The electronic component unit has a first terminal portion at a position facing one side of the housing, One side of the housing is provided with a second terminal portion that is connected to the control board and contacts the first terminal portion when at least the display panel is most tightly wound relative to the winding body. A display device characterized by the following features.

2. A display device according to claim 1, The first terminal portion or the second terminal portion is elastically biased in the direction of contact with the mating side. A display device characterized by the following features.

3. A display device according to claim 2, The system includes an electric motor that moves the display panel in the direction of feeding it out from the winding body. A display device characterized by the following features.

4. A display device according to any one of claims 1 to 3, The aforementioned electronic component unit includes a secondary battery, The first terminal section and the second terminal section include charging terminals. A display device characterized by the following features.

5. A display device according to claim 1, The first terminal section and the second terminal section are located on the back side of the display panel. A display device characterized by the following features.

6. A display device according to claim 1, The display panel is provided with a frame member at its tip, The electronic component unit is attached to the frame member. A display device characterized by the following features.

Images