JP2001331128A - Display, display device and display system having this display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable users themselves to freely change the constitution of a display device in a display system according to conditions. SOLUTION: The display device of the display system is constituted by aggregating of display bodies ln (n=1, 2, etc.), as independent bodies. The display bodies ln has connecting shafts 3 constituting joint means and are similarly press fitted into fitting holes 7 of connecting blocks 2 constituting the joint means, by which the display bodies ln and the display bodies 1n+1 are connected to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display system for displaying display contents such as a time, a measured time of a sports game, and a score, a display device of the display system, and a display unit constituting the display device.

[0002]

2. Description of the Related Art In a sports competition, a competition organizer places a stadium in a stadium in order to inform a spectator of a goal time and a lap time of a runner in a sprint run in athletics or a current score of an opponent team in a basketball competition, for example. It is common to set up a display system for posting these, and such a display system is also indispensable to spectators in order to watch sports competitions.

By the way, the display device of such a conventional display system has a limited number of characters that can be displayed, that is, the number of digits that can be displayed such as a measurement time and a score that can be displayed from the beginning. For example, in the measurement time display of athletics only as described above, for example, “XX hour □□ minute △△ second” or “XX
The number of digits to be displayed as a number, such as “minute □□ second △△”, is exclusively 6 digits. In this case, the display device of the display system is, for example, a display having a 7-segment LED element having 6 segments.
It is constituted by being fixed type,
A semicolon (:) or a dot (.) As a delimiter, or characters such as "hour", "minute", and "second" are previously written on the display device between "" and "". When the purpose of use is exclusively for the score display of indoor ball games, for example, volleyball games, the number of digits to be displayed as numbers, such as “XX vs. □□”, is exclusively 2 digits (score) × 2 (competition team) ), So that the display device is constructed by fixing four display units having 7-segment LED elements in the same manner as described above. Characters such as a semicolon (:) and "pair" are written in advance.

A sports competition organizer or the like purchases a display system having such a completed display device,
If you purchase a display system (display device) that is exclusively configured to display the measured time of athletics as described above,
When the display system (display device) is used for displaying a score in an indoor volleyball game, the middle two digits are displayed with a hyphen (-), and the left and right two digits are used for displaying the score.

[0005]

However, for example, a display system (display device) constituted by a four-digit display exclusively for indoor ball games as described above is used for displaying a measured time of an athletic competition using a six-digit display device. When it is desired to use the measurement time, since the number of digits that can be displayed is four, the measurement time cannot be displayed as it is. Also, depending on the type of sports competition or the intention of the organizer, there may be cases where the number of digits that can be displayed is desired to be freely changed according to the situation. In such a case, it is very convenient if the number of display digits can be freely increased or decreased each time by the organizer or the like, that is, the end user who purchased the display system.

[0006] The present invention has been made in view of such circumstances to improve the convenience of the end user.
The problem is to change the configuration of the display device in the display system.
An object of the present invention is to allow an end user to freely change the situation according to circumstances.

[0007]

According to a first aspect of the present invention, there is provided a display unit, comprising: a control unit for transmitting character information to be displayed; a display unit for receiving the character information; A display device that displays the display contents such as the time, the measurement time, and the score of the sports competition in accordance with
A display body constituting the display device of the display system having a character information receiving means for receiving the character information, and a joint means capable of freely connecting and disconnecting a plurality of independent display bodies. It is characterized by having.

In the display device of the display system, one display unit displays one character by, for example, a 7-segment LED element, and a plurality of the display units collectively display all characters to be displayed. Usually, in this case, a plurality of display bodies are provided to an end user in a state where the display bodies are assembled in advance by hands of a manufacturer or the like, that is, in a state where they are fixed to a housing or the like. Therefore, the end user cannot freely increase or decrease the number of display bodies according to the number of characters of the content to be displayed.

According to the first aspect of the present invention, since the display body has the joint means for freely connecting and disconnecting the plurality of independent display bodies, it is possible for the manufacturer or the like to handle the display body. It is possible for the end user to freely connect and disconnect the plurality of display objects independently, thereby enabling the end user to create a display object having an appropriate configuration according to the purpose of use, that is, the number of characters of the content to be displayed. Each time, it can be freely constructed on the spot.

[0010] Therefore, for example, six types of display bodies according to the first aspect of the present invention, each representing one number, are connected to one display body, and immediately after the athletic time of athletics is displayed in six digits, two types are displayed. , The end user can separate the display body by himself and use it as a 4-digit display for displaying the score of a soccer game.

The display according to the present invention is driven by an internal power supply. According to the second aspect of the present invention, since the display has an internal power supply, it is possible to drive the display without having to supply power from the outside. Therefore, a power supply location, for example, AC
In order to take into account the installation distance between the power supply port and the display, the display can be installed anywhere, whether indoors or outdoors, without restriction on the installation location of the display. The degree of freedom when installing and moving is improved.

At the same time, because of the internal power supply, it is possible to use it more safely, especially in areas around water, such as outdoors and poolside. In other words, there is no need to plug in and unplug the power outlet as in the case of using an external power supply, so the risk of electric leakage and electric shock is extremely low,
Anyone can safely use it at any place regardless of the age group of the end user. It is to be noted that the above effects can be further obtained by applying a more advanced waterproof process to the display body.

According to a third aspect of the present invention, there is provided a display device according to the first or the second aspect, further comprising a 7-segment LED display element. According to the invention described in claim 3 of the present application, since the display performs character display using the display element of the 7-segment LED, it is possible to configure the display at low cost. In the case of displaying, for example, it is only necessary to display numbers, which is particularly effective for such uses. Further, since the display element itself emits light, there is an advantage that the display element can be visually recognized even in a dark place.

According to a fourth aspect of the present invention, there is provided a display according to the first or second aspect, further comprising a display element of a 7-segment LCD. According to the invention described in claim 4 of the present application, since the display body performs character display using the display element of the 7-segment LCD, it is possible to obtain the same operation and effect as the invention described in claim 3 of the present application, and particularly to install the display. When the environment is outdoors, it is possible to minimize a decrease in visibility due to sunlight.

According to a fifth aspect of the present invention, in the display body according to any one of the first to fourth aspects, the joint means may include:
In the connected state, one adjacent display body is configured to be rotatable with respect to another display body.

According to the fifth aspect of the present invention, the joint means according to any one of the first to fourth aspects is configured so that adjacent display bodies can rotate with respect to each other. By the joint means, the display device of the display system can be freely configured into various shapes. Thereby, for example, a plurality of display bodies are connected in a ring shape so as to be visible from any angle, or the connected plurality of display bodies are bent from the center and back-to-back to be forward and rearward. From the same time.

According to a sixth aspect of the present invention, there is provided the display according to any one of the first to fifth aspects, further comprising an output port for relaying and outputting the character information to a connected adjacent display.

To the display as an independent body, character information to be displayed is transmitted from a control unit for transmitting character information. Therefore, when the character information receiving means of the display is connected to the control unit in a wired manner by a connection cable or the like, the display and the control unit must be connected to each other by a connection cable or the like. However, when there are a plurality of display objects, particularly when there are many display objects, all of the plurality of display objects must be connected to the control unit, and a large number of connection cables are concentrated on the control unit. In addition, the connection work becomes complicated, and the wiring condition at the installation location is confused.

According to the sixth aspect of the present invention, since there is provided an output port for relaying and outputting character information to a connected adjacent display, it is necessary to connect a plurality of displays and the control unit individually. However, only one display is connected to the control unit and the other display is connected only to the connected adjacent display, and as a result, character information is transmitted to each display. In this case, as means for connecting the connected adjacent display bodies, for example, by connecting with a short connection cable,
Alternatively, various means, such as performing electrical connection as well as mechanical connection by providing connection wiring and the like in addition to the joint means described above, can be considered. Therefore, this makes it possible to solve the problem that the connection work is complicated and the wiring state is confused as in the case where the plurality of display bodies and the control unit are individually connected as described above.

According to a seventh aspect of the present invention, in the display device according to any one of the first to sixth aspects, the character information is transmitted as a radio signal from the control unit, and the character information receiving means includes the radio information. It comprises a receiver for receiving a signal.

According to the present invention, the character information receiving means comprises a receiver for receiving character information transmitted as a radio signal from the control unit.
A connection cable for connecting the display unit and the control unit is not required, and the display unit and the control unit can be freely installed at any position without restriction on the installation location of the display unit and the control unit in consideration of the connection cable length. In addition, since the wiring work is unnecessary, the installation work is also simplified.

A display unit according to claim 8 of the present application is a control unit for transmitting character information to be displayed, and receiving the character information, and displaying contents such as a time, a measuring time, and a score of a sports competition according to the character information. And a display device for displaying characters in the display system, wherein the display body according to any one of claims 1 to 7 is joined by at least two or more joint means according to claim 1. It is characterized by becoming.

The display device in the display system is constituted by assembling a plurality of display bodies. According to the invention described in claim 8 of the present application, the display device forming the display system is described in claims 1 to 7. Are joined by at least two or more joint means according to the first aspect of the present invention, so that the same functions and effects as those of the first to seventh aspects of the present invention can be obtained.

A display system according to a ninth aspect of the present invention includes a control unit for transmitting character information to be displayed,
A display device that receives the character information and displays characters such as a time, a measured time, and a score of a sports competition according to the character information in a display system, wherein the display device according to claim 8 is provided. Features.

According to the ninth aspect of the present invention, since the display system includes the display device according to the eighth aspect,
The same operation and effect as the above-described invention can be obtained.

A display system according to a tenth aspect of the present invention is the display system according to the ninth aspect, wherein the control unit comprises a computer device. Claim 10 of the present application
According to the invention described above, in the display system, the control unit for transmitting the character information to be displayed on the display device comprises a computer device, so that the management of the character information to be displayed on the display device, the input of the character information, and the like can be simplified. And it can be performed freely.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. First, the general structure of the display body according to the present invention and the joint means of the display body,
This will be described in detail with reference to FIGS. Here, FIG.
FIG. 2 is a perspective view showing a joint means of the display body of the table, and FIG.
FIG. 2 is a sectional view of a main part of the display body after the joint is performed from the state of FIG. 1. 3 to 5 are perspective views showing variations of the configuration of the display device when the display device is configured by joining the display bodies by the joint means. Note that, in the present embodiment, a numeric display using a 7-segment display format is described as an example of the character content to be displayed in the display system, but characters other than numbers can be displayed by changing the configuration of the display body. Needless to say, the present invention is not limited to the display body relating to the numerical display, the display device and the display system using the display body. Further, in the present embodiment, a configuration in which one character (number) is displayed on one display body is adopted, but a plurality of characters (for example, two characters) are displayed by changing the configuration of the display body. Therefore, the present invention is not limited to a configuration in which only one character is displayed on one display body as in the present embodiment.

In FIG. 1, reference numeral 1 _n (n = 1, 2,...)
...) indicate a plurality of display bodies that should exist in the display system. By gathering a plurality of the display bodies 1 _n ,
The display device of the display system is configured.

The 7-segment LCD display in the display body _{1 n} (hereinafter, simply referred to as "LCD".) 4 is mounted,
Thus, the display body 1 _n receives the character information transmitted from the control unit to be described later, and displays a number of an order of magnitude. The LCD 4 has good visibility, and especially when used in an outdoor environment, the visibility is less likely to decrease due to sunlight. Here, an LED 4 is used instead of the LCD 4.
It is also possible to use a so-called magnetic reversal rotary bar. That is, any display means for forming one character may be used.

The display bodies 1 _n are independent of each other by a housing 5 serving as a base of the apparatus. On both side surfaces of the housing 5, a connection shaft 3 constituting “joint means” is connected to the housing 5. It is formed by integral molding.

[0031] In order to joint together the display ₁ 1, _{1 2} 1 and 2, using the connection block 2. Connection block 2, one used during the display body ₁ 1, _{1 2,} mechanically coupling the display ₁ 1, _{1 2.} A fitting hole 6 penetrating in the longitudinal direction is formed in the connection block 2,
In the fitting hole 6, an opening 7 that is connected to both side surfaces of the connection block 2 is also formed in the entire longitudinal direction.
Note that the inner diameter of the fitting hole 6 is formed so as to be smaller than the shaft diameter of the connection shaft 3, and the opening size of the opening 7 is formed so as to be smaller than the inner diameter of the fitting hole 6. Therefore, two display bodies ₁₁ ,
In order to join the _two to each other, the display bodies 1 ₁ and 1
_2, the connecting shaft 3 of both display bodies is aligned with the opening 7 of the connecting block 2, and the opening 7 is expanded by pressing the connecting shaft 3 as it is. Press-fit. Thereby, the display bodies ₁₁ and 1
₂ are mechanically connected.

Here, the display 1₁, 1₂In the fitting hole 6
The connection shaft 3 that has been press-fitted is used as a rotation shaft, as indicated by the arrow in FIG.
Direction, that is, the display 1₁, 1₂Freely with respect to each other
It is possible to rotate. Therefore, this
Multiple display bodies 1 in a jointed state₁~ 1_nImmediately
In other words, the display device in the display system can be
It can be freely configured. An example of this configuration
Then, a configuration as shown in FIGS. 3 and 4 can be considered. FIG. 3 and
FIG. 4 shows the display 1₁~ 1_nAnd a plurality of connection blocks 2
FIG. 1 is a perspective view showing a configuration example of a display device 100 which has been used. FIG.
Is six display objects 1 ₁~ 1₆Of display device 100 using
This is an example, and a display body 1 is provided on the front side in FIG.₁~ 1₃To
3-digit display used, display body 1 on the back side₄~ 1₆3 using
Display structure of digit display, display body 1₁~ 1₃as well as
Display 1₄~ 1₆Are built back to back
ing. Thereby, the front side and the rear side in FIG.
The same display contents at the same time.
You. FIG. 4 shows six display units 1 as described above.₁~ 1₆To
3 is a configuration example of a display device 100 used. In FIG.
Display 1₁~ 1₆Are joined together
Accordingly, the display device 100 is formed in a ring shape as a whole. This
By having an annular configuration like
The display contents can also be visually recognized.

As described above, the joint means enables the end user to freely connect and disconnect the plurality of display bodies 1 ₁ to 1 _n independently of the manufacturer or the like. The display device 100 having an appropriate configuration according to the purpose of use, that is, the number of characters to be displayed
Can be freely constructed on the spot each time, and an appropriate display service can be provided to a viewer of the display device 100 (for example, a spectator in a sports competition). Become.

[0034] However, the structure of the display device 100 described above is only an example, also be constructed in any kind of form by rotation angle of the display body 1 _n in number and the joint portion of the display body 1 _n to Joint It is possible. Further, not only the both side portions of the display body 1 _n, by providing the joint means in the upper and lower, for example, the display device 1
00 can be multi-staged.

[0035] Here, the connection block 2 described in Figure 1, may be rotatably fixed to one of the display body 1 ₁ or 1 _2. Further, the joint means is not limited to this embodiment, and any joint means may be used as long as the joint means can be freely connected and disconnected. For example, provided an L-shaped hook on one of the display body 1 ₁ or 1 _2,該鉤unit may be configured such as providing a groove to engage the other. Furthermore, as shown in FIG. 5, the display 1 _1, 1 ₂ of the guide rail 8 which the upper and lower are fitted,
It is also possible to adopt a joint means using 9. In this case, the connection block 2 may be omitted.

Next, an internal configuration of a display according to the present invention and a display system using the display will be described with reference to FIGS. Here, FIG. 6A is a block diagram showing a connection form of the display system, FIG. 6B is a block diagram showing another connection form, and FIG. 7 is a diagram showing two connected display bodies ₁₁ and _12. is a perspective view showing the back of the FIG. 8 is a block diagram showing the internal configuration of the display 1 _n.

First, the connection form of the display system will be described with reference to FIG. 6A and 6B, reference numeral 101 denotes a display system. Display system 1
01 is a display device 100 that displays characters to be displayed,
It comprises a control unit 13 for transmitting character information to be displayed on the display device 100. Display device 1
00, be configured by the display body 1 ₁ to 1 _n are connected by a joint means mentioned above one another,
Control by the display _{1 1} input cable 14,
Connected to the control unit 13
Transmits character information to be displayed to the display device 100.

In the display device 100, the display bodies ₁₁ to 1
_n are interconnected by a relay cable 10. Relay cable 10 includes a display body 1 _n character information relay output port 16 is connected to the character information input port 15 as the character information receiving means of the display 1 _{n + 1,} the display body 1 _n
And relays the character information transmitted from the control unit 13 to the display _{1n + 1} . Thus, since an output port 16, each of the display body 1 _n is the character information to relay output to the display body 1 _{n + 1} adjacent linked by a joint means, a plurality of display bodies 1 _n and the control unit 13 Need not be individually connected, and since a large number of connection cables (in this case, input cables 14) do not concentrate on the control unit 13,
This makes it possible to prevent complicated connection work and confusion in the wiring state.

By the way, the control unit 13
If, in the display 1 ₁ Tokyo is the entry of text information in the display device 100, it is possible to further simplify the connecting work and wiring state by sending and receiving text information by a wireless signal. FIG. 6B shows a configuration of such a display system 101, and reference numeral 17 denotes a receiver for receiving character information transmitted from the control unit 13 as a radio signal. The receiver 1
7, be installed inside the unit display 1 _1, may be connected to the display body 1 ₁ of the installed outside and the display 1 ₁ character information input port 15. Thus, the control unit 13, by transmitting and receiving character information through radio signals between the display 1 _1,
The input cable 14 shown in FIG. 6A becomes unnecessary, and the display device 100 and the control unit 13 can be freely moved to any positions without restriction on the installation location in consideration of the cable length of the input cable 14. Installation becomes possible, and the wiring work is unnecessary, so that the installation work for both is also facilitated.

Next, with reference to FIGS. 7 and 8, will be described in more detailed internal structure of the display body 1 _n.
In Figure 7, the rear surface of the display body 1 _n, a character information input port 15 described above, it is disposed and character information relay output port 16. Of the display _{1 1} character information input port 15
Is the input cable 1 from the control unit 13.
4 are connected, and thereafter, are relay-connected by the relay cable 10 toward the display _{1n + 1} . Display 1 _n
Of the lower back, it has been arranged drive battery 12 as an internal power supply to the battery charging port 11 supplies driving power to the internal circuitry of the display 1 _n.

As an alternative to the relay cable 10, connection wires are embedded in the connection block 2 as the joint means described above, and a character information input port 15 and a character information relay output port 16 are provided on the connection shaft 3 (see FIG. 1). Accordingly, a configuration in which the display _1n and the display _{1n + 1} are relay-connected is also possible. Therefore, the means for relay-connecting the adjacent display is not limited to this embodiment.

In FIG. 8, the control unit 1
From 3 to display body 1 _n, the character information to be displayed by the bus 18 is transmitted. Here, the interface for transmitting and receiving data using the bus 18 is GPIB (I
It is conceivable to use a common interface used for data transmission today, such as an EEE488) interface or an RS-232C interface.

The display body _{1 n} has an LCD 4 to display characters to be displayed, LCD driving circuit for driving the LCD 4 20
And a central processing unit 19 for transmitting a display signal to the LCD drive circuit 20. The central processing unit 19
It decodes the data signals and control signals such as character information to be transmitted via the bus 18, and transmits the appropriate display signals to be displayed in the display body 1 _n toward the LCD driving circuit 20. If the contents (characters) to be displayed on the plurality of display units 1 _n are different from each other, the display unit 1 _n is provided with an address setting means (not shown), and a control signal is sent from the control unit 13 together with the character information. The function can be realized by flowing the signal through the bus 18.
Further, the central processing unit 19 can be connected to an oscillation circuit and a frequency dividing circuit (not shown) for generating a clock required for timing.

[0044] In the display body _{1 n,} an internal circuit such as LCD4, the drive battery 12 as an internal power source (Vin)
Driven by Therefore, there is no need to supply power from the outside, the supply locations of the power supply, in order to for example considering the installation distance of the display 1 _n the supply port of the AC power source, such as the location of the display 1 _n is limited it not, it is possible to install the display body 1 _n anywhere regardless of indoor and outdoor, is improved degree of freedom in the location and movement of the display system 101. In addition, the danger of electric leakage and electric shock is extremely low even around water, such as outdoors or at the poolside, so that it can be used more safely.

Next, the control unit 13 will be described. Control unit 13 is constituted by a computer device, transmits the character information to be displayed in the display body 1 _n to the bus 18. Here, the control unit 13 is not limited to a computer device, but by using a computer device,
Managing the character information to be displayed on the display body 1 _n, it is possible to perform input or the like of the character information and freely easily. The character information transmitted from the control unit 13 includes a score of an indoor ball game, a set count, and the like input from a keyboard device or the like in the control unit 13 (computer device) as an input interface.

By the way, in the display device 100 described above,
Display using the joint means in the present invention.
Supplementary characters that assist the content can be formed. FIG.
And FIG. 10 is a front view of a display device 100 showing this configuration example.
It is. In FIG. 9, the display device 100 displays the current time.
Display body 1₁, 1₂In "time",
Display 1₃, 1₄Indicates "minutes". this
Time, display body 1₁, 1 ₂Is easy to display the hour
Display body 1 so that it can be recognized₂And 1₃In between,
Display auxiliary plate D on which "hour" character is formed₁Is placed
I have. Similarly, the display body 1₄"Minute" statement on the right side of
Display auxiliary plate D in which characters are formed₂Is arranged. this
A display auxiliary plate without a display element such as LCD is interposed
The display content on the display device 100 is
Assisted and more informed to the viewer of the display device 100
It is possible to provide easy display services, and
End users can be freely connected and connected by joint means.
The function and effect of the present invention that can be separated
It can be effective.

The display device 10 can be more simply and economically manufactured.
As a means for assisting the display contents of 0, a display assisting means such as forming a semicolon (:) character indicating a break of "hour" and "minute" in the connection block 2a as shown in FIG. 10 is also possible.

[0048]

As described above, according to the present invention,
Since the display body has a joint means for freely connecting and disconnecting the plurality of display bodies as independent bodies, the end user himself can freely switch the plurality of display bodies regardless of the hand of the manufacturer or the like. It is possible to perform connection and disconnection, whereby the end user can freely build a display device having an appropriate configuration according to the purpose of use, that is, the number of characters to be displayed, on a case-by-case basis. It becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a joint means of a display body according to the present invention.

FIG. 2 is a sectional view of a main part of a display according to the present invention.

FIG. 3 is a perspective view illustrating a configuration example of a display device.

FIG. 4 is a perspective view showing another configuration example of the display device.

FIG. 5 is a perspective view showing another configuration example of the display device.

FIG. 6A is a block diagram showing a connection configuration of a display system, and FIG. 6B is a block diagram showing another connection configuration of the display system.

FIG. 7 is a perspective view showing a rear surface of the display body.

FIG. 8 is a block diagram showing an internal configuration of a display.

FIG. 9 is a perspective view illustrating a configuration example of a display device.

FIG. 10 is a perspective view showing another configuration example of the display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 _n display body 2 connection block 3 connection axis 4 LCD display 5 housing 6 fitting hole 7 opening 10 relay cable 11 drive battery 12 battery insertion port 13 control unit 14 connection cable 15 character information input port 16 character information Relay output port 17 Receiver 18 Bus 19 Central processing unit 20 LCD drive circuit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09G 3/18 G09G 3/18 F-term (Reference) 5C006 AA28 AF38 BB01 BC11 BF00 FA05 FA41 5C080 AA07 AA10 BB02 DD13 EE01 GG02 JJ01 JJ02 JJ06 KK19 KK49 KK52 5C094 AA41 AA43 AA56 BA23 BA43 CA14 DA05 DA20 DB10 GA10 HA01 HA03 HA10 5G435 AA17 BB12 CC05 EE13 EE16 LL10 LL19 LL19

Claims (10)

[Claims] 1. A control unit for transmitting character information to be displayed, a display device for receiving the character information, and character-displaying display contents such as a time, a measurement time, and a score of a sports competition according to the character information; A display body constituting the display device of the display system having: a character information receiving means for receiving the character information, a joint means capable of freely connecting and disconnecting a plurality of independent display bodies, A display body comprising: 2. The display according to claim 1, wherein the display is driven by an internal power supply. 3. The display according to claim 1, further comprising a 7-segment LED display element. 4. The display according to claim 1, further comprising a display element of a 7-segment LCD. 5. The display device according to claim 1, wherein the joint means is configured such that, in a connected state, one adjacent display body is rotatable with respect to another display body. A display body characterized by the following. 6. The display according to claim 1, further comprising an output port for relaying and outputting said character information to an adjacent display connected by said joint means. 7. The character information according to claim 1, wherein the character information is transmitted as a wireless signal from the control unit, and the character information receiving unit includes a receiver that receives the wireless signal. And a display body characterized in that: 8. A control unit for transmitting character information to be displayed, a display device for receiving the character information and displaying characters such as a time, a measuring time, and a score of a sports competition according to the character information. The display device according to claim 1, wherein the display device is formed by joining at least two or more of the display bodies according to any one of claims 1 to 7 with the joint unit according to claim 1. apparatus. 9. A control unit for transmitting character information to be displayed, a display device for receiving the character information, and displaying characters such as a time, a measuring time, and a score of a sports competition according to the character information, A display system comprising: the display device according to claim 8. 10. The display system according to claim 9, wherein said control unit comprises a computer device.