JP2000010508A - Video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video display device in which displays stable rotation or which allows the rotational driving of these displays with small driving torque. SOLUTION: A rotating body 20 is placed on a strut flange 11 at the end of a strut 10. A supporting member 30 is mounted at the rotating body 20 and a pair of the displays 41, 42 are arranged to face each other by locating at least the portions of the respective displays nearer the strut 10 side than the front end of the strut flange 11 and are fixed and suspended to the supporting member 30. Then, the weights of a pair of the displays 41, 42 are symmetrically distributed around the strut 10 and the stable rotational motion of the displays is obtd. In addition, the positions of center of gravity of the respective displays are brought near to the strut 10, by which the moment of inertia in rotational driving is made small and the rotational driving of the displays with the small driving torque is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display device in which a display body rotates with its display surface facing outward.

[0002]

2. Description of the Related Art Conventionally, a display device in which a display body in which a signboard such as a store mark or an advertisement is fitted into a frame body is installed outside a supermarket or a restaurant.

[0003] Such a conventional display device is configured as shown in FIG.

[0004] That is, a column flange 11 that protrudes outward is formed at the upper end portion of a cylindrical column 10 that stands vertically on a base 100, and on the column flange 11,
A rotating body (rotation driving device) 20 that rotates while being supported by the support post 10 is mounted.

As shown in FIG. 11, the rotating body 20 has a tubular fixed shaft 21 and a fixed shaft 21.
Rotating part 22 formed in a box shape so that
The fixed shaft 21 has a fixed shaft flange 21a projecting outward at a lower end thereof, and the fixed shaft flange 21a is fixed to the column 10 by connecting the fixed shaft flange 21a to the column flange 11.

On the other hand, the rotating part 22 has a bearing mechanism part 22a for rotation, and a plurality of bearings (not shown) housed inside the rotating part 22 are brought into rolling contact with the outer peripheral part of the fixed shaft 21 so that the fixed shaft 21 is rotated. The rotation unit 22 itself is rotatable around the center axis.

The rotating section 22 houses a drive motor 22b therein, and power and control signals are supplied to the drive motor 22b through the cylindrical column 10 and the fixed shaft 21.

That is, wiring is performed from the wiring hole 10a provided in the lower part of the support post 10 shown in FIG. 10 through the inside of the cylindrical support post 10 and further through the inside of the fixed shaft 21 to the slip ring mechanism 23 shown in FIG. Etc. are supplied.
Then, by the power supply from the slip ring mechanism 23,
The drive motor 22b is driven and rotated.

The driving torque of the driving motor 22b is transmitted to a speed reducer 22d attached to the rotating section 22 via a driving belt 22c, and the rotation speed of the driving motor is reduced to a rotation speed suitable for visual recognition of the display. Is done. Then, the first chain wheel 22e pivotally supported by the speed reducer 22d rotates at the reduced rotation speed.

On the other hand, the axial direction is the same as the fixed shaft 21,
The second chain wheel 21b is fixed to the fixed shaft 21. The first chain wheel 22e and the second chain wheel 21b are coupled via a drive chain 22f, and the rotational drive torque is transmitted to the fixed shaft 21,
Since the fixed shaft 21 is fixed to the column 10, the fixed shaft 2
1 itself does not rotate, and the rotating portion 22 rotates by the reaction of the rotational drive torque.

Further, as shown in FIG. 10, a display body 4 in which a signboard 42 'is fitted in a frame 41' in advance is provided on the rotating body 20.
0 'is attached, and the display body 40' rotates around the support post 10 in conjunction with the rotation of the rotating body 20, so that the information displayed on the signboard 42 'can be visually recognized from multiple directions.

[0012]

As described above, the conventional display device rotates a signboard, which is a so-called still image, as a display body.

In recent years, however, there has been an increasing demand for rotating and displaying moving picture images and image information that is switched and displayed relatively frequently in order to enhance the display effect or the advertising effect. For such an image display device, for example, a so-called LED module in which a large number of light emitting diodes (LEDs) are arranged may be used.
In the rotating display, not only LED module,
It is necessary to attach heavy equipment such as a control device to drive the LED and a cooling device to suppress the temperature rise due to heat generation.The display body is heavier than the conventional still image signboard. Become.

If a large screen is to be constructed in order to enhance the display effect, such a display is even larger.
It becomes heavy, it is not easy to balance during rotation, and the operation tends to be unstable. In addition, a large-capacity and large-sized drive motor for rotating and driving a large-sized display body is required, and improvement is required in terms of reduction in size and weight.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an image display device in which a display body can rotate stably and a display body can be driven to rotate with a small driving torque. It is an object of the present invention to provide a video display device capable of performing such operations.

[0016]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an image display apparatus according to the first aspect of the present invention comprises: a tubular support standing upright on a base; A rotating body attached to an end of the support and rotating about the support shaft as a rotation axis; and a plurality of display elements which are fixed to the rotary body, hung down, face each other via the support, and are outwardly planar. And a pair of box-shaped display members arranged on the display device.

In the video display device according to the first aspect of the invention, the pair of display members suspended and fixed to the rotating body are arranged to face each other via the support, so that the weight of the pair of display members is reduced.
It is distributed symmetrically around the column, and a stable rotation operation is obtained.

[0018] The image display device according to claim 2 is
A cylindrical support having an end portion having a flange protruding outward on a base, a rotating body mounted on the flange of the support, and rotating around the support shaft as a rotation axis; A plurality of display elements are arranged in a planar shape on the outside while being fixed so as to hang down on a support member connected to the support member, at least a part thereof is disposed so as to be located closer to the support column than the tip of the flange. And a box-shaped display.

In the image display apparatus according to the second aspect, at least one portion of the display is disposed closer to the support than the tip of the flange, and the center of gravity of the display is closer to the rotation center axis, so that the display in the rotating operation is performed. The body moment of inertia is reduced, and the display body can be driven to rotate with a small driving torque.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a video display device according to the present invention will be described below in detail with reference to FIGS. The same components as those of the conventional display device shown in FIGS. 10 and 11 are denoted by the same reference numerals, and detailed description is omitted.

FIG. 1 shows a first embodiment of a video display device according to the present invention.
FIG. 3 is an exploded perspective view of the device according to the embodiment.

A cylindrical column 10 erected on a base 100
Has a support flange 11 projecting outward at the upper end thereof, and a rotating body 20 is mounted on the support flange 11 in the same manner as the conventional display device shown in FIG. A box-shaped support member 30 having no front and rear side plates was attached to the bottom plate of the rotating body 20 in advance.

The support member 30 has circular openings 30aa and 30ba larger than the support flange 11 on the top plate 30a and the bottom plate 30b, respectively. Shaft flange 21a
Through the opening 30aa to connect the top plate 30a to the bottom plate of the rotating body 20 with bolts (not shown).

Thereafter, the support flange 1 is inserted into the opening 30ba.
1 and the support flange 11 and the fixed shaft flange 21
a, and the support member 30 is put on the upper end of the column 10.

That is, FIG. 2 shows A-
FIG. 3 is a partial cross-sectional view as viewed from above from the line A. As shown in FIG. 2, the support flange 11 includes four bolts 11a.
Are connected to the fixed shaft flange 21a by nuts (not shown) corresponding to the bolts 11a. The mounting holes 30bb provided at four places are for mounting the display body.

Next, as shown in FIG. 1, in this embodiment, a pair of box-shaped display bodies 41 and 42 are arranged to face each other with the support 10 at the center, and the display surface of each display body is LED module 41 having light emitting diodes (LEDs) arranged in a plane
a, 42a. Then, the pair of display bodies 41 and 42 are arranged in close contact with each other such that the columns 10 are received by the vertical grooves 41b and 42b formed on the back plate of each display body.

The mounting flanges 41c, 41c provided on the side plate of the display 41 and the mounting flanges 42c, 42c provided on the side plate of the display 42 are mutually connected by bolts and nuts (both not shown). At the same time, the upper ends of the display bodies 41 and 42 are connected to and fixed to the bottom plate 30b of the support member 30.

When the rotating body 20 is driven to rotate about the axis of the column 10 as a rotation axis by a driving mechanism similar to that of the conventional display device shown in FIG.
A pair of display bodies 41 and 42 rotate around the support 10 and
The video information displayed on the ED modules 41a and 42a can be visually recognized from multiple directions.

As described above, in the first embodiment of the device of the present invention, the pair of display members 41, 4
Since the number 2 is provided, the weight of each display body is symmetrically distributed around the support 10 in a well-balanced manner, so that the rotation operation is stable, no extra force is applied to the device, and the durability is improved.

In this embodiment, the display is:
By avoiding the support flange 11 via the support member 30, the position of the center of gravity approaches the support 10 as compared with the case where this is directly fixed to the rotating body 20. That is, the display body has a small moment of inertia in the rotation operation,
Rotational driving is possible with a small driving torque. Therefore, the drive motor can be reduced in size and weight.

Further, the pillar 10 is formed by a vertical groove on the back plate of the display body.
In response to this, the position of the center of gravity of the display body is brought closer to the column 10 and the moment of inertia is reduced, so that the display body can be rotationally driven with a smaller driving torque.

By the way, the image display device is often installed outdoors, and it is considered that its rotation operation becomes unstable due to the influence of wind. Therefore, in the first embodiment, a side cover is provided to smoothly detour the wind hitting the device.

That is, as shown in FIG.
The semicircular side covers 51 and 52 having a cross section having a convex shape on the outside are attached to the side surfaces of the reference numeral 42.

As shown in FIG. 3, which is a cross-sectional view taken along the line BB after assembling the apparatus shown in FIG.
However, the wind W that hits the surface of the apparatus is smoothly diverted, and a stable rotation operation of the apparatus is obtained.

The side covers 51 and 52 are respectively
It opens upward and downward to discharge heat from the side surface of the display body upward, and also provides a cooling effect of the device.

If the rotation of the box-shaped display body becomes unstable due to the wind force, the force due to the unstable operation may affect the drive mechanism inside the rotating body 20 and cause a device failure. There is. Thus, in this embodiment, a clutch mechanism configured to buffer the wind force and protect the speed reducer 22d and the drive motor 22b is provided inside the rotating body 20.

FIG. 4 is an enlarged view of a main part of the rotating body 20,
12 shows a clutch mechanism mounted on a fixed shaft 21 in place of the second chain wheel of the conventional display device shown in FIG.

That is, the rotating pedestal 21 c formed in a flange shape extending outward is fixed to the fixed shaft 21. Then, the free chain wheel 21d is fitted with a play to the fixed shaft 21d from above the rotating pedestal 21c so as to be rotatable on the rotating pedestal 21c.

Further, a ring-shaped clutch disc 21e is fixed on the free chain wheel 21d, and a plurality of clutch discs each having an upper end fixed to the fixed shaft 21 so as to press the clutch disc 21e from above. The leaf spring 21f is mounted.

Then, the first chain wheel 22e,
The drive chain 22 is attached to the free chain wheel 21d.
f, through which the first chainwheel 2
2e rotational drive torque is free chain wheel 21d
Is transmitted to

In a normal rotation operation, the clutch disk 21e and the plurality of leaf springs 21f do not slide due to the frictional force of each other, and the rotational driving torque of the free chain wheel 21d is transmitted to the fixed shaft 21, and The rotating portion 22 rotates by the reaction of the driving torque. Then, along with this rotation, the display bodies 41 and 42 also rotate.

However, if the interlock between the clutch disc 21e and the plurality of leaf springs 21f cannot be maintained due to wind force or the like applied to the apparatus, the clutch disc 21e and the leaf spring 21f slide (slip) and decelerate. The machine 22d and the drive motor 22b are protected without being overloaded by the influence of wind power or the like.

The plurality of leaf springs 21f are pressed from above by a plurality of adjusting bolts 21g provided corresponding to the respective leaf springs 21f, and the frictional force is adjusted by changing the length of screwing of each adjusting bolt 21g. be able to.

Therefore, as described above, the clutch disk 2
1e and a plurality of leaf springs 21f and the like constitute a clutch mechanism, which buffers unnecessary external force and protects the speed reducer 22d.
A highly reliable video display device can be realized.

The display members 41 and 42 and the rotating member 20
Accommodates electric devices such as the drive motor 22b and the LED control device therein, and the heat generated from these devices raises the temperature inside the device, which affects the life of components and the like. Therefore, in this embodiment, the upper cover is attached to the rotating body 20 so as to cover it, and a ventilator for discharging heat inside the apparatus to the outside air is provided on the ceiling plate.

That is, the upper cover 7 shown in FIGS. 1 and 5
As shown in a partially cutaway perspective view of FIG. 0, an opening 70e is provided in advance on the ceiling plate of the upper lid cover 70 in which both ends of the cross section are outwardly convex. Then, an opening frame 71a having notches 71a1 formed at a plurality of locations is erected so as to surround the opening 70e. Furthermore, in order to prevent foreign substances such as birds from entering the apparatus, the ventilator lid 71b is mounted over the opening frame 71a. The heat inside the device can be discharged to the outside air even when the device is mounted.

The upper cover 70 having the above structure is attached so as to cover the rotating body 20. As shown in the partial sectional view of FIG. 6, the attachment structure is such that the long bolts 70b, 70b are attached to the upper portions of the side covers 51, 52. Female threaded mounting hole 51
a and 52a.
The handles 70a shown in FIG. 5 are used when the upper cover 70 is attached or detached.

As described above, in the first embodiment of the apparatus of the present invention, the ventilator 71 is provided on the ceiling plate of the upper lid cover 70 to suppress a rise in temperature inside the apparatus due to heat generation. Can be avoided and the function can be reduced.

In this embodiment, the display 4
1 and 42 are suspended and fixed to the rotating body 20 via the support member 30 and rotate stably. However, since their shapes are vertically long, the operation of the lower end of each display body is slightly improper with respect to the support 10. It may be stable and rattling may occur. Therefore, in this embodiment, a lower support device is provided below the display bodies 41 and 42 in order to stabilize the rotation operation of the lower end of each display body.

FIG. 7 is a front view of the lower support device according to the first embodiment of the present invention, and FIG. 8 is a bottom view of the lower support device.

That is, the lower supporting device 60 includes a pair of lower supporting frames 61, 61 having a U-shaped cross section.
It is composed of four rollers 62 provided so as to rotate in contact with the support post 10. Therefore, the display bodies 41 and 42
A lower support device 60 attached by four bolts 60a at a lower end of the lower frame has a pair of lower support frames 61, 61.
, And the four rollers 62 rotate while contacting the outer peripheral portion of the column 10.

The lower supporting device 6 thus assembled
0 indicates that the four rollers in contact with the column 10
Since the display units 41 and 42 rotate in conjunction with each other while supporting them, the lower end portions of the heavy display units 41 and 42 are smoothly rotated, and rattling or the like is avoided.

As shown in FIG. 1, lower side covers 53, 54 are attached below the side covers 51, 52 so as to cover the lower support device 60. Further, lower front covers 55 and 56 formed in a substantially flat plate shape are disposed below the display bodies 41 and 42, respectively, and the left and right ends thereof are attached to the lower side covers 53 and 54. Lower side cover 5
Like the side covers 51 and 52, the cross sections 3 and 54 have a semicircular cross section with an outwardly convex shape, so that the flow of wind can be made smooth and the rotation operation of the apparatus can be further stabilized.

In the first embodiment of the apparatus of the present invention described above, a so-called LED module which emits light by arranging light emitting diodes (LEDs) in a plane is used as a display.
As shown in an enlarged manner in FIG. 9, the LED modules 41 and 42 are configured by arranging a large number of LEDs 40a that emit light such as R (red), G (green), and B (blue) in the vertical and horizontal directions.
A light-shielding plate 40b is provided to prevent the LED from receiving sunlight and the image from being difficult to view.

As described above, by using an LED module in which a large number of LEDs are arranged as a display body, it is possible to realize an image display device with good image visibility.

Next, an assembling procedure of the video display device according to the first embodiment of the present invention will be described with reference to FIG.

(1) First, the column 10 is erected on the base 100.

(2) The rotating body 20 to which the support member 30 has been attached in advance is placed on the upper end of the column 10.

(3) The display bodies 41 and 42 are connected to each other, and the upper ends thereof are connected to the support member 30 and fixed.

(4) Below the display members 41 and 42, the support 1
The lower support frames 61 and 61 are arranged so as to sandwich 0, and the respective lower support frames are fixed to the bottom plates of the display bodies 41 and 42.

(5) The side covers 51 and 52 are attached to the left and right side plates of the display bodies 41 and 42, respectively.

(6) The upper cover 70 is put on the rotating body 20 and connected to the side covers 51 and 52 with the long bolts 70b.

(7) The lower side covers 53 and 54 and the lower front covers 55 and 56 are attached so as to cover the lower support device 60.

The procedure for installing the apparatus has been described above. When removing the apparatus, the apparatus may be removed in the reverse order. in this way,
In this embodiment, by dividing the device into units, it is possible to realize a video display device with good workability and capable of quick installation and removal.

In the first embodiment, the display 4
Although it is possible to stabilize the rotation operation of 1, 42,
In short, since the weight of each display body is distributed symmetrically in a well-balanced manner with the support 10 as a center, such an effect is brought about. Therefore, both display bodies are directly fixed to the rotating body 20 without the support member 30, The device of the present invention may be configured.

When it is not necessary to display images on both sides,
Instead of one of the paired display bodies, a support body or the like having the same shape and the same weight as the display body may be attached to configure the apparatus of the present invention for single-sided display.

Further, instead of the LED module, a video display device according to the present invention using a so-called liquid crystal panel or the like using a liquid crystal as a display element as a display may be constituted.

As described above, in the video display device of the present invention, the pair of display members suspended and fixed to the rotating body are arranged opposite to each other via the column, so that the weight of the pair of display members is reduced. It is distributed symmetrically around the column, and a stable rotation operation is obtained. Therefore, the durability and reliability of the bearing mechanism and the like are improved, and the frequency of periodic inspections and repairs can be reduced.

Also, in the video display device of the present invention, since at least one portion of the display is disposed closer to the support than the tip of the flange, the moment of inertia of the display during rotation is reduced, and the driving torque of the display is reduced. And can be driven to rotate. Therefore, the drive motor can be reduced in size and weight.

[0070]

According to the first aspect of the present invention, the weight of the pair of display bodies is symmetrically distributed around the support, and a stable rotation operation can be obtained.

According to the second aspect of the present invention, the moment of inertia of the display is reduced, and the display can be driven to rotate with a small driving torque.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a video display device according to a first embodiment of the present invention.

FIG. 2 is a partial sectional view taken along the line AA after assembling the apparatus shown in FIG.

FIG. 3 is a sectional view taken along line BB after assembling the apparatus shown in FIG.

FIG. 4 is an enlarged view of a main part of a rotating body constituting the apparatus shown in FIG.

FIG. 5 is a partially cutaway perspective view of an upper cover constituting the apparatus shown in FIG. 1;

FIG. 6 is a top cutaway sectional view of the apparatus shown in FIG. 1;

FIG. 7 is a front view of a lower support device constituting the device shown in FIG. 1;

8 is a bottom view of the device shown in FIG.

FIG. 9 is an enlarged perspective view of an LED module constituting the device shown in FIG.

FIG. 10 is an external perspective view of a conventional display device.

FIG. 11 is a cross-sectional view of a rotating body included in the apparatus of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Column 11 Column flange 20 Rotary drive device (rotary body) 21 Fixed shaft 21a Fixed shaft flange 21b Second chain wheel 21c Rotating pedestal 21d Free chain wheel 21e Clutch disk 21f Leaf spring 21g Adjustment bolt 22 Rotating part 22a Bearing mechanism part 22b Drive Motor 22c Drive belt 22d Reduction gear 22e First chain wheel 22f Drive chain 23 Slip ring mechanism 30 Support member 30a Top plate 30b Bottom plate 41, 42 Display bodies 41a, 42a Light emitting diode (LED) modules 41b, 42b Vertical grooves 51, 52 Side cover 60 Lower supporting device 70 Upper lid cover 71 Ventilator 71a Opening frame 71a1 Notch 100 base

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[Procedure amendment]

[Submission date] April 28, 1999 (1999.4.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016]

The present invention SUMMARY OF] has been made to solve the conventional problems described above, film image display apparatus odor
The flange that stands on the base and protrudes outward.
A cylindrical support provided in the section, and placed on a flange of the support
Is a rotary body rotating the strut shaft as a rotation axis, are suspended and fixed connected to the support member to the rotating member, small
At least partly on the support post side than the tip of the flange
A groove arranged to be positioned and for receiving the support
, And a pair of box-shaped display members on the outside of which a plurality of light-emitting diodes are arranged in a plane.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

As described above, in the video display device of the present invention, the pair of display members suspended and fixed to the rotating body are arranged to face each other via the support, so that the weight of the pair of display members is centered on the support. And a stable rotation operation is obtained.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Deleted

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

[0019] The video display device of the present invention, at least a portion of the display body is disposed on the post side than the tip of the flange, the center of gravity of the display body is closer to the rotation center axis,
The moment of inertia of the display during the rotation operation is reduced, and the display can be driven to rotate with a small driving torque.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0070

[Correction method] Change

[Correction contents]

[0070]

As described above, according to the present invention, the weights of the pair of display members are symmetrically distributed around the support,
The display body is small because the moment of inertia of the display body is small.
Stable rotation operation at maximum driving dynamic torque is obtained.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0071

[Correction method] Deleted ───────────────────────────────────────────── ────────

[Procedure amendment]

[Submission date] September 21, 1999 (September 9, 1999
1)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. In an image display device, a flange which is vertically erected on a base and which protrudes outward is provided. a tubular post having a part, is placed on the flange of the tubular supporting <br/> pillar, a rotary member for rotating the strut shaft as the center of rotation <br/> axis of the rotary body Hanging on the bottom plate
Is fixed so as to prevent the flange from rotating.
Rollable support member and bottom plate of this support member
And is hung on the inner surface.
There is a vertical groove formed to surround the column with a gap between them.
And a pair of box-shaped displays having a plurality of light emitting diodes arranged in a plane on the outer surface.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Further, the video display device of the present invention has a
The display body faces the vertical groove so as to surround the column with a gap.
So that the center of gravity of the display body is closer to the rotation center axis.
In this case , the moment of inertia of the display during the rotation operation is reduced, and the display can be driven to rotate with a small driving torque.

Continued on the front page F term (reference) 5C094 AA01 AA35 AA51 BA24 BA43 CA19 FA10 HA01 5C096 AA11 BA04 BB28 BB29 BB32 BC15 BC20 CA06 CC06 CC23 DA01 DA08 DB10 DB13 DB18 DB26 DC07 FA02 FA09

Claims (9)

[Claims] 1. A column that stands upright on a base, a rotating body that is attached to an end of the column, and that rotates about the column axis as a rotation axis; A video display device comprising: a pair of box-shaped display members each of which opposes each other via the support column and has a plurality of display elements arranged in a plane on the outside. 2. A cylindrical support having a flange protruding outward at an end thereof, which is provided on a base, and a rotating body which is mounted on the flange of the support and rotates about the support shaft as a rotation axis. And fixedly suspended on a support member connected to the rotating body,
And a box-shaped display body in which a plurality of display elements are arranged in a plane on the outside, at least a part of which is disposed so as to be located closer to the support than the tip of the flange. Video display device. 3. The video display device according to claim 2, further comprising a pair of said display bodies facing each other via said support. 4. The image display device according to claim 1, wherein the display has a groove for receiving the support. 5. The display device according to claim 1, further comprising a side cover that covers a side surface of the display body and has a semicircular cross section having a convex shape on the outside.
An image display device according to the item. 6. The rotating body according to claim 1, wherein a driving motor is housed inside the rotating body, and the rotation driving torque of the driving motor is transmitted to the support column via a clutch mechanism to rotate. The video display device according to claim 5. 7. The image according to claim 1, further comprising an upper lid cover housing the rotating body therein and having a ventilation hole in a ceiling plate. Display device. 8. A lower support device comprising a frame-shaped lower support frame attached to a lower end portion of the display body, and a plurality of rollers pivotally supported by the lower support frame and abutting on the outer periphery of the column. The video display device according to any one of claims 1 to 7, wherein: 9. The image display device according to claim 1, wherein the display element is a light emitting diode.