JP2020067573A - Image display device and rotation device - Google Patents

Abstract

To provide an image display device in which a drive mechanism can be miniaturized.SOLUTION: An image display device 2 includes a panel-like device body 4 which displays an image on a front surface 4a and a stand 6 which rotatably supports the device body 4. The stand 6 includes: a column member 14; a bracket 18 which supports a back surface 4b of the device body 4; a support shaft part 16 being the support shaft part 16 which rotatably connects the column member 14 and the bracket 18, is arranged between the column member 14 and the back surface 4b of the device body 4 and has a shaft line 36 extending in the vertical direction; and a drive mechanism 20 which rotates the bracket 18 around the shaft line 36 of the support shaft part 16 with respect to the column member 14.SELECTED DRAWING: Figure 3

Description

  The present disclosure relates to an image display device and a rotating device having a swivel function.

  Patent Document 1 discloses an image display device having a swivel function. This type of image display device includes a panel-shaped display body that displays an image on the front surface, a pedestal portion that supports the display body from below, and a drive mechanism that is arranged on the pedestal portion. The drive mechanism rotates the display body within a predetermined angle range with respect to the pedestal portion.

JP, 2008-116769, A

  The present disclosure provides an image display device and a rotation device that can reduce the size of a drive mechanism.

  An image display device according to the present disclosure includes a panel-shaped device body that displays an image on the front surface, and a support member that rotatably supports the device body. The support member includes a first member and a device body. A second member that supports the back surface, and a support shaft portion that rotatably connects the first member and the second member to each other, and is disposed between the first member and the back surface of the apparatus body. A support shaft portion having an axis line extending in the up-down direction, and a drive mechanism for rotating the second member with respect to the first member about the axis line of the support shaft portion.

  According to the image display device and the like in the present disclosure, the drive mechanism can be downsized.

It is a perspective view showing the front side of the image display device concerning an embodiment. It is a perspective view showing the back side of the image display device concerning an embodiment. It is a perspective view showing a stand of an image display device concerning an embodiment. It is a side view which shows the stand of the image display apparatus which concerns on embodiment. FIG. 3 is a perspective view showing a stand of the image display device according to the embodiment in a state where the top case is omitted. FIG. 6 is a perspective view showing a stand of the image display device according to the embodiment when viewed from an angle different from FIG. 5. FIG. 3 is an exploded perspective view showing the supporting shaft portion and the bracket of the stand of the image display device according to the embodiment in an exploded manner. FIG. 3 is an exploded perspective view showing the drive mechanism of the stand of the image display device according to the embodiment in an exploded manner. It is a top view which shows the stand of the image display apparatus which concerns on embodiment in which the top case is abbreviate | omitted.

  Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed description of well-known matters and repeated description of substantially the same configuration may be omitted. This is for avoiding unnecessary redundancy in the following description and for facilitating understanding by those skilled in the art.

  It should be noted that the inventors provide the accompanying drawings and the following description in order for those skilled in the art to fully understand the present disclosure, and are intended to limit the subject matter described in the claims by these. is not.

(Embodiment)
Hereinafter, embodiments will be described with reference to FIGS. 1 to 9.

[1. Overall configuration of image display device]
First, an overall configuration of an image display device 2 (an example of a rotating device) according to an embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing the front side of the image display device 2 according to the embodiment. FIG. 2 is a perspective view showing the back side of the image display device 2 according to the embodiment.

  In FIG. 1, the horizontal direction (horizontal direction) of the image display device 2 is the X axis, the thickness direction (front-back direction) of the image display device 2 is the Y axis, and the height direction (vertical direction) of the image display device 2 is. Is defined as the Z axis.

  As shown in FIGS. 1 and 2, the image display device 2 is, for example, a flat panel display type liquid crystal television receiver having a swivel function. The image display device 2 includes a device body 4 and a stand 6 (an example of a support member).

  The device body 4 is a panel-shaped display unit for displaying an image. As shown in FIG. 1, a display screen 8 for displaying an image is arranged on the front surface 4a of the apparatus body 4. As shown in FIG. 2, a support plate 10 supported by a bracket 18 (described later) of the stand 6 is attached to the lower end of the back surface 4b of the apparatus body 4.

  The stand 6 is a floor-standing stand for rotatably supporting the apparatus body 4. The stand 6 has a swivel function of adjusting the orientation of the display screen 8 of the device body 4 in the left-right direction within a predetermined angle range by electrically rotating the device body 4 with respect to the stand 6. The structure of the stand 6 will be described in detail later.

[2. Stand configuration]
Next, the configuration of the stand 6 will be described with reference to FIGS. 2 to 9. FIG. 3 is a perspective view showing the stand 6 of the image display device 2 according to the embodiment. FIG. 4 is a side view showing the stand 6 of the image display device 2 according to the embodiment. FIG. 5 is a perspective view showing the stand 6 of the image display device 2 according to the embodiment with the top case 22 omitted. FIG. 6 is a perspective view showing the stand 6 of the image display device 2 according to the embodiment when viewed from an angle different from FIG. FIG. 7 is an exploded perspective view showing the supporting shaft portion 16 and the bracket 18 of the stand 6 of the image display device 2 according to the embodiment in an exploded manner. FIG. 8 is an exploded perspective view showing the drive mechanism 20 of the stand 6 of the image display device 2 according to the embodiment in an exploded manner. FIG. 9 is a plan view showing the stand 6 of the image display device 2 according to the embodiment with the top case 22 omitted.

  As shown in FIGS. 2 to 6, the stand 6 includes a base member 12, a column member 14 (an example of a first member), a support shaft portion 16, a bracket 18 (an example of a second member), It has a drive mechanism 20 and a top case 22.

  As shown in FIG. 2, the base member 12 is formed in a rectangular flat plate shape, and is placed on an installation surface for installing the image display device 2. The base member 12 is made of metal such as iron. For convenience of description, the base member 12 is not shown in FIGS. 3 to 9.

  As shown in FIG. 2, the column member 14 is erected on the upper surface of the base member 12 and is made of metal such as aluminum die cast. As shown in FIGS. 3 to 7, the column member 14 includes a support leg portion 14a and a support body portion 14b. The support leg portion 14a is attached to the upper surface of the base member 12 and is formed in a substantially columnar shape extending in the vertical direction (Z-axis direction). The support body portion 14b is formed in a cylindrical shape with a bottom, and is arranged so as to cover the upper end portion of the support leg portion 14a. As shown in FIG. 3, a plurality of screw holes 23 are formed on the side surface of the support body portion 14b opposite to the apparatus body 4. By inserting the screw 25 into the screw hole 23 and screwing the screw 25 into a screw hole (not shown) of the support leg portion 14a, the support main body portion 14b is fixed to the upper end portion of the support leg portion 14a. As shown in FIG. 7, a projecting portion 24 that projects upward (in the positive direction of the Z-axis) is formed on the plate-shaped upper end portion of the support main body portion 14b.

  Further, as shown in FIG. 7, a pair of support protrusions 32 and 34 for supporting the support shaft portion 16 are formed on the side surface of the support body portion 14b on the device body 4 side. The pair of support protrusions 32 and 34 are arranged at intervals in the vertical direction. The base plate portion 38 of the bracket 18 can be stabilized by ensuring the distance between the pair of support protrusions 32 and 34. A pair of support holes 32a and 34a (an example of a pair of support portions) for inserting the support shaft portion 16 are formed in the pair of support protrusions 32 and 34, respectively. One of the support protrusions 32 is arranged at the upper end of the support body 14b, and the other support protrusion 34 is arranged at the lower end of the support body 14b. As shown in FIG. 7, a hollow spacer 27 for positioning the support shaft portion 16 in the vertical direction is arranged on the upper surface of the other support protrusion 34. The spacer 27 is arranged so as to communicate with the support hole 34a.

  As in the present embodiment, the support member 14 is divided into the support leg portion 14a and the support main body portion 14b, so that the support leg portion 14a is arranged not only in the vertical direction but also in the vertical direction. The direction can be inclined with respect to. Further, the support leg portion 14a may be formed in a block shape. As a result, the degree of freedom in the shape of the support member 14 can be increased.

  The support shaft portion 16 is a member for rotatably connecting the support main body portion 14b of the column member 14 and the bracket 18 to each other, and is made of metal such as stainless steel. As shown in FIGS. 3 and 4, the support shaft portion 16 is disposed between the support body portion 14b of the strut member 14 and the base plate portion 38 (described later) of the bracket 18, and has an axis line 36 extending in the vertical direction. Have That is, the support shaft portion 16 is arranged between the support body portion 14b of the support member 14 and the back surface 4b of the apparatus body 4 (see FIG. 2). The axis 36 of the support shaft portion 16 extends substantially parallel to the longitudinal direction (Z-axis direction) of the column member 14. As shown in FIG. 7, both ends of the support shaft portion 16 in the longitudinal direction (that is, the direction of the axis 36) are supported by the pair of support holes 32a and 34a of the support body portion 14b. The lower end of the support shaft portion 16 is inserted into the spacer 27 and supported by the support hole 34a.

  As shown in FIG. 2, the bracket 18 is a member for supporting the support plate 10 of the apparatus body 4, and is formed by pressing a metal plate such as SECC (electrogalvanized steel plate). As shown in FIG. 7, the bracket 18 has a base plate portion 38, an upper plate portion 40, and a lower plate portion 42.

  As shown in FIGS. 6 and 7, the base plate portion 38 is formed in a flat plate shape and has a plurality of screw holes 44. By inserting a screw (not shown) into the screw hole 44 and screwing the screw into the screw hole (not shown) of the support plate 10, the base plate portion 38 is attached to the support plate 10 as shown in FIG. 2.

  As shown in FIGS. 5 and 6, the upper plate portion 40 extends substantially vertically from the upper end portion of the base plate portion 38 and is arranged so as to cover the upper end portion of the support main body portion 14b of the column member 14. . As shown in FIG. 7, an engagement hole 46 (an example of an engagement portion) is formed in the root portion of the upper side plate portion 40 (that is, near the boundary portion with the base plate portion 38). The engagement hole 46 is arranged so as to overlap the support hole 32a of the support body portion 14b in the XY plan view. Further, a long hole 48 is formed in the upper side plate portion 40. As shown in FIG. 8, the elongated hole 48 extends in an arc shape along the circumference of an imaginary circle centered on the axis 36 of the support shaft portion 16 in the XY plan view. The protrusion 24 of the support body 14b is movably inserted into the elongated hole 48. Further, as shown in FIG. 8, three support shafts 26, 28, 30 extending in the vertical direction are supported at the upper end of the upper plate portion 40. For convenience of explanation, in FIG. 7, the illustration of the three support shafts 26, 28, 30 is omitted.

  As shown in FIGS. 3 to 5, the lower plate portion 42 extends substantially vertically from the lower end portion of the base plate portion 38 and is arranged so as to face the upper plate portion 40. As shown in FIG. 7, a cutout portion 50 (an example of an engaging portion) is formed at the tip portion of the lower plate portion 42. The cutout portion 50 is arranged so as to overlap the support hole 34a of the support body portion 14b in the XY plan view.

  As shown in FIG. 7, the upper end portion of the support shaft portion 16 is engaged with the engagement hole 46. Further, the lower end portion of the support shaft portion 16 is engaged with the cutout portion 50 via the spacer 27. As a result, the support body portion 14 b of the column member 14 and the bracket 18 are rotatably connected to each other via the support shaft portion 16. That is, as shown in FIG. 3, the bracket 18 is rotatable about the axis 36 of the support shaft portion 16 with respect to the support main body portion 14 b of the column member 14. At this time, as shown in FIG. 8, the protrusion 24 of the support main body portion 14 b moves in the longitudinal direction of the elongated hole 48 with respect to the elongated hole 48 of the bracket 18. By contacting both ends of the elongated hole 48 in the longitudinal direction of the elongated hole 48, the angular range in which the bracket 18 rotates with respect to the support body portion 14b of the column member 14 is restricted.

  The drive mechanism 20 is a mechanism for rotating the bracket 18 around the axis 36 of the support shaft portion 16 with respect to the support main body portion 14 b of the column member 14. As shown in FIGS. 5, 6, 8 and 9, the drive mechanism 20 includes a motor 52 (an example of a drive source), a worm gear 54, a worm wheel 56, an intermediate gear 58, and a drive gear 60 (gear). And an rack 62. For convenience of description, the drive mechanism 20 other than the rack 62 is not shown in FIG. 7.

  The motor 52 is an electric motor having an output shaft 53 (see FIGS. 6 and 9) that can rotate in the forward and reverse directions. The motor 52 is supported inside the top case 22 (see FIGS. 3 and 4).

  The worm gear 54 is connected to the output shaft 53 of the motor 52. The worm gear 54 rotates in the forward and reverse directions integrally with the output shaft 53 of the motor 52. For convenience of description, the teeth of the worm gear 54 are omitted in FIGS. 5, 6, 8, and 9.

  The worm wheel 56 functions as a reduction gear for reducing the output of the motor 52. The worm wheel 56 is rotatably supported by the support shaft 26 of the upper plate portion 40 of the bracket 18 and meshes with the worm gear 54. For convenience of description, the teeth of the worm wheel 56 are omitted in FIGS. 5, 6 and 8.

  The intermediate gear 58 functions as a reduction gear for reducing the output of the motor 52. The intermediate gear 58 is rotatably supported by the support shaft 28 of the upper plate portion 40 of the bracket 18, and meshes with the worm wheel 56. For convenience of explanation, the teeth of the intermediate gear 58 are omitted in FIGS. 5, 6 and 8.

  The drive gear 60 functions as a reduction gear for reducing the output of the motor 52. The drive gear 60 is rotatably supported by the support shaft 30 of the upper plate portion 40 of the bracket 18 and meshes with the intermediate gear 58.

  The rack 62 is fixed to the upper end of the support body 14b and meshes with the drive gear 60. As shown in FIG. 9, the rack 62 is arranged on the side opposite to the base plate portion 38 of the bracket 18 with respect to the axis line 36 of the support shaft portion 16 in the XY plan view, and is centered on the axis line 36 of the support shaft portion 16. It extends in an arc shape along the circumference of an imaginary circle. As shown in FIG. 9, the distance D1 between the axis 36 of the support shaft 16 and the base plate 38 of the bracket 18 is larger than the distance D2 between the axis 36 of the support shaft 16 and the rack 62. short.

  As shown in FIG. 9, when the motor 52 rotates in the forward direction, the driving force of the motor 52 is transmitted to the driving gear 60 via the worm gear 54, the worm wheel 56, and the intermediate gear 58. Accordingly, the drive gear 60 rotates about the support shaft 30 in the direction indicated by the arrow 64, so that the bracket 18 moves in the direction indicated by the arrow 66 with respect to the support main body portion 14b of the support member 14. It rotates about the axis 36 of the portion 16. As a result, as shown in FIGS. 1 and 2, the device body 4 rotates with respect to the stand 6 in the direction indicated by the arrow 66 about the axis 36 (see FIG. 3) of the support shaft portion 16.

  On the other hand, when the motor 52 rotates in the negative direction, the driving force of the motor 52 is transmitted to the driving gear 60 via the worm gear 54, the worm wheel 56 and the intermediate gear 58. Along with this, the drive gear 60 rotates about the support shaft 30 in the direction indicated by the arrow 68, so that the bracket 18 moves in the direction indicated by the arrow 70 with respect to the support main body portion 14b of the support member 14. It rotates about the axis 36 of the portion 16. As a result, as shown in FIGS. 1 and 2, the apparatus body 4 rotates with respect to the stand 6 around the axis 36 (see FIG. 3) of the support shaft portion 16 in the direction indicated by the arrow 70.

  As shown in FIGS. 3 and 4, the top case 22 is attached to the upper plate portion 40 of the bracket 18 so as to cover the drive mechanism 20. Inside the top case 22, a sensor switch (not shown) for detecting the rotational position of the bracket 18 with respect to the support body portion 14b of the support member 14 is arranged. For convenience of description, the top case 22 is not shown in FIGS. 5 to 9.

  The drive mechanism 20 is disposed inside the top case 22, and the upper plate portion 40 of the bracket 18 closes the opening at the lower end of the top case 22. By assembling the bracket 18, the drive mechanism 20, and the top case 22 in this manner, the ease of assembly can be improved. Further, since the rotating structure including the support shaft portion 16 is completed even without the top case 22 (driving mechanism 20), even if the driving mechanism 20 should be damaged, the main body 4 of the apparatus will not be damaged. It is possible to avoid dropping and the like, and it is possible to improve safety.

[3. effect]
In the present embodiment, the image display device 2 includes a panel-shaped device body 4 that displays an image on the front surface 4a, and a stand 6 that rotatably supports the device body 4. The stand 6 is a support member 14, a bracket 18 that supports the back surface 4b of the apparatus main body 4, and a support shaft portion 16 that rotatably connects the support member 14 and the bracket 18 to each other. A support shaft portion 16 having an axis 36 extending in the vertical direction, which is arranged between the back surface 4b of the body 4 and a drive mechanism for rotating the bracket 18 with respect to the support member 14 about the axis 36 of the support shaft portion 16. 20 and.

  As a result, the support shaft portion 16 is arranged between the support member 14 and the back surface 4b of the apparatus body 4, and thus is arranged at a position closer to the center of gravity of the apparatus body 4. Therefore, the torsional moment due to the weight of the device body 4 applied to the support shaft portion 16 can be reduced, and the device body 4 can be easily rotated even when the driving force of the drive mechanism 20 is relatively small. it can. Therefore, the drive mechanism 20 can be downsized, and the image display device 2 can be downsized.

  In addition, in the present embodiment, the strut member 14 is a strut member that extends substantially parallel to the axis 36 of the support shaft portion 16.

  Thereby, the floor-standing type image display device 2 can be realized.

  Further, in the present embodiment, the support main body portion 14b of the strut member 14 has a pair of support holes 32a and 34a for supporting both end portions of the support shaft portion 16 in the direction of the axis 36, respectively. The bracket 18 has an engagement hole 46 and a cutout portion 50 that engage with both ends of the support shaft portion 16, respectively.

  As a result, both ends of the support shaft portion 16 in the direction of the axis 36 are supported, so that a torsion moment due to the weight of the apparatus body 4 can be received at both ends of the support shaft portion 16 in the direction of the axis 36. As a result, rattling of the support shaft portion 16 can be suppressed, and the device body 4 can be stably rotated with respect to the stand 6.

  Further, in the present embodiment, the drive mechanism 20 is the motor 52, the drive gear 60 that is rotated by the drive force of the motor 52, and the rack 62 that is meshed with the drive gear 60, and is disposed on the support member 14. , The rack 62 arranged on the side opposite to the bracket 18 with respect to the axis 36 of the support shaft portion 16 in the XY plan view.

  As a result, the distance between the rack 62 and the axis 36 of the support shaft portion 16 can be secured in a plan view, and the device body 4 can be rotated with respect to the stand 6 while realizing the downsizing of the drive mechanism 20. It is possible to obtain the torque for making

  Further, in the present embodiment, the distance D1 between the axis 36 and the bracket 18 is shorter than the distance D2 between the axis 36 and the rack 62 in the XY plan view.

  Thereby, a sufficient torque for rotating the device body 4 with respect to the stand 6 can be obtained.

(Modifications, etc.)
The embodiments have been described above as examples of the technology disclosed in the present application. However, the technique in the present disclosure is not limited to this, and can be applied to the embodiment in which changes, replacements, additions, omissions, etc. are appropriately made. Moreover, it is also possible to combine the respective constituent elements described in the above-described embodiment to form a new embodiment.

  Therefore, other embodiments will be exemplified below.

  In the above-described embodiment, the image display device 2 is composed of a liquid crystal television receiver, but the present invention is not limited to this, and may be composed of, for example, a liquid crystal monitor or digital signage for a personal computer.

  Further, in the above embodiment, the rotating device is configured by the image display device 2, but the rotating device is not limited to this, and may be configured by various devices such as a speaker or a blower having a swivel function.

  Further, in the above embodiment, the support member is configured by the stand 6, but the support member is not limited to this, and may be configured by a bracket for hanging the apparatus body 4 on a wall, for example. As a result, the wall-mounted image display device 2 can be realized.

  Further, in the above embodiment, the drive mechanism 20 uses the plurality of gears (the worm wheel 56 and the intermediate gear 58) as the drive transmission mechanism for transmitting the driving force of the motor 52 to the drive gear 60. However, the endless drive belt may be used in addition to the plurality of gears.

  Further, in the above-described embodiment, the support leg portion 14a and the support main body portion 14b of the strut member 14 are configured by separate members, but the present invention is not limited to this, and the support leg portion 14a and the support main body portion 14b are integrally formed. (That is, the column member 14 may be a single member).

  As described above, the embodiments have been described as examples of the technology according to the present disclosure. To that end, the accompanying drawings and detailed description are provided.

  Therefore, among the constituent elements described in the accompanying drawings and the detailed description, not only constituent elements essential for solving the problem but also constituent elements not essential for solving the problem in order to exemplify the above technology. Can also be included. Therefore, it should not be immediately recognized that the non-essential components are essential, because the non-essential components are described in the accompanying drawings and the detailed description.

  Further, the above-described embodiment is for exemplifying the technique in the present disclosure, and thus various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or the scope of equivalents thereof.

  The image display device of the present disclosure is applicable to, for example, a liquid crystal television receiver having a swivel function.

2 image display device 4 device body 4a front face 4b back face 6 stand 8 display screen 10 support plate 12 base member 14 support member 14a support leg portion 14b support body portion 16 support shaft portion 18 bracket 20 drive mechanism 22 top case 23, 44 screw hole 24 Projection 25 Screw 26, 28, 30 Support shaft 27 Spacer 32, 34 Support projection 32a, 34a Support hole 36 Axis 38 Base plate part 40 Upper plate part 42 Lower plate part 46 Engagement hole 48 Long hole 50 Notch part 52 motor 53 output shaft 54 worm gear 56 worm wheel 58 intermediate gear 60 drive gear 62 rack 64, 66, 68, 70 arrow

Claims (6)

A panel-shaped device body that displays images on the front,
A supporting member that rotatably supports the apparatus body,
The support member is
A first member,
A second member for supporting the back surface of the apparatus main body;
A support shaft portion that rotatably connects the first member and the second member to each other, is disposed between the first member and the back surface of the apparatus main body, and extends in the vertical direction. A support shaft portion having an axis,
An image display device comprising: a drive mechanism configured to rotate the second member with respect to the first member about the axis of the support shaft portion. The image display device according to claim 1, wherein the first member is a pillar member that extends substantially parallel to the axis of the support shaft portion. The first member has a pair of support portions that respectively support both end portions of the support shaft portion in the direction of the axis.
The image display device according to claim 1, wherein the second member has a pair of engaging portions that engage with the both end portions of the support shaft portion, respectively. The drive mechanism is
Drive source,
A gear that is rotated by the driving force of the driving source,
A rack meshed with the gear, the rack being arranged on the first member, and being arranged on a side opposite to the second member with respect to the axis of the support shaft portion in a plan view. The image display device according to claim 1. The image display device according to claim 4, wherein a distance between the axis and the second member is shorter than a distance between the axis and the rack in the plan view. The device body,
A supporting member that rotatably supports the apparatus body,
The support member is
A first member,
A second member for supporting the device body;
A support shaft portion that rotatably connects the first member and the second member to each other, is disposed between the first member and the back surface of the apparatus main body, and extends in the vertical direction. A support shaft portion having an axis,
A drive mechanism that rotates the second member with respect to the first member about the axis of the support shaft portion.

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