JP2003111922A - Structure and method for mounting liquid crystal unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure and a method for mounting liquid crystal units suitable for reusing recycled pachinko machines. SOLUTION: The structure and the method for mounting liquid crystal units are constituted of a U-shaped front case 6 and a U-shaped rear case 7. The front case 6 is arranged inside a set plate 5 and a set plate 4 in such a way as to face a front opening part, and is provided with a front opening part. The rear case 7 integrally secures the front case 6 with the front case 6 sandwiched in-between with the set plates. Groove parts for holding a liquid crystal panel part, a backlight unit, and a control circuit unit to be integrated inside are formed in the front case 6. The set plate 5 and the rear case 7 are fixed by fitting support claws 12a-12d with hook-shaped tips and side-surface through holes (only 29a, 29c, and 29d are shown in Fig.). The front case 6 and the rear case 7 are fixed by two side through holes 14a for insertion and engagement with end protrusion parts 28a and 28b and two stoppers 13a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal unit mounting structure and a liquid crystal unit mounting method, and more particularly to a liquid crystal unit mounting structure and a liquid crystal unit mounting method suitable for recycling a pachinko machine.

[0002]

2. Description of the Related Art In a pachinko machine, a liquid crystal display device is arranged on the game board surface, a plurality of numbers or patterns are displayed by the liquid crystal display device, and the combination of the displayed patterns or the like is hit, or There is a game that shows the deviation and advances the game. In such a liquid crystal display device,
A liquid crystal panel, a backlight light diffusing plate, a fluorescent tube, a backlight reflecting plate, and a display control circuit board are arranged adjacent to each other and incorporated in the housing to form an integrated liquid crystal display device.

Therefore, when assembling a liquid crystal display device in the related art, for example, a liquid crystal panel and a backlight light diffusing plate are fastened to a housing with screws, and a backlight reflecting plate with a fluorescent tube attached to the housing is screwed. It is necessary to perform fastening work, such as fastening the display control circuit board to the housing with screws, and then closing the lid of the housing that houses them, and fixing between the parts and to the housing. Therefore, there is a problem that a large number of fastening members are required to increase the number of parts and the product becomes expensive.

As a means for solving the above problems, there is a liquid crystal display device for a pachinko machine disclosed in, for example, Japanese Patent Application Laid-Open No. 10-244053. The liquid crystal display device for a pachinko machine has a cross-sectional structure as shown in FIG. That is,
The liquid crystal panel 180 is placed inside the front frame 140 that constitutes the front opening 440 of the housing for the liquid crystal display device 110, and the backlight unit 22 is placed behind the liquid crystal panel 180.
0 is positioned and locked on the liquid crystal panel section 180.

A shield member 200, which is engaged with the front frame 140 so as to be locked at a predetermined position and has at least an electric shield function, is provided between the liquid crystal panel section 180 and the backlight unit 220. Place it so that it is sandwiched. Further, the circuit unit 240 is fastened with the backlight unit 220 being engaged and positioned. Further, the rear frame 160 is integrally fastened with a part of the circuit unit 240 sandwiched between the rear frame 160 and a part of the front frame 140.
By constructing the housing in combination with
Two engaged states.

[0006]

The above liquid crystal display device for pachinko machines has the following problems. That is, the backlight unit is positioned and locked to the liquid crystal panel portion inside the front frame, and is incorporated into the front frame so that the backlight unit is locked at a predetermined position. Tighten in the state of being engaged and positioned. These are brought into one engaged state. Then, the circuit unit is fastened to the backlight unit and fastened in a state in which the circuit unit is sandwiched between the front frame and the rear frame. Therefore, it is necessary to position each part inside the front frame and to fasten them together.

On the other hand, in the case of a pachinko machine, there is a case where a liquid crystal display device fails and needs to be repaired. Also,
In order to reduce the price of new pachinko machines and environmental measures, it is desirable to remove expensive liquid crystal display devices from used pachinko machines and recycle them. In this case, it is necessary to quickly remove the liquid crystal display device from the pachinko machine without breaking it. However, as described above, for example, Japanese Patent Laid-Open No.
In the pachinko machine disclosed in 0-244053, the liquid crystal panel section 180 is placed inside the frame 140, and the backlight unit 220 is positioned and locked to the liquid crystal panel section 180 behind it. It was necessary to remove each part, and the work time was sometimes long.

The present invention has been made for the purpose of solving the above problems and providing a liquid crystal unit mounting structure and a liquid crystal unit mounting method suitable for recycling of a pachinko machine.

[0009]

In order to achieve the above object, the present invention provides a liquid crystal unit mounting structure as set forth in claim 1, wherein a portion provided with a front opening provided on the rear surface of the game board and a rear storage portion. A set plate having a U-shaped front case provided with a front opening that is placed inside the set plate so as to face the front opening, and the front case is sandwiched between the front plate and the set plate. It is composed of a U-shaped back case that is integrally fastened in a closed state, and the whole is combined in a box shape,
On both sides of the set plate, a hook-shaped support claw for fixing the set plate and the back case is provided, and the front case is
The liquid crystal panel part to be incorporated inside the front case, the groove part for holding the backlight unit and the control circuit unit, and the stoppers for fixing the front case and the back case are provided on the upper and lower surfaces, and the end parts provided on both end portions of the back case side surface Side through-holes through which the convex portions engage are provided at both ends of the surface provided with the front opening, and the back case has both ends of the surface provided with the front opening of the front case. Side projections that engage through side through holes provided in the side projections are fitted to both ends of the side surface, and support claws that fix the set plate and the back case are provided on the side surfaces of the set plate. Holes are provided on both sides, and upper and lower through holes that engage with stoppers provided on the front case are provided at upper and lower ends, respectively.

In the liquid crystal unit mounting structure according to a second aspect of the present invention, the front case has a V-shaped folding portion having a hinge function.

According to a third aspect of the present invention, there is provided a method for mounting a liquid crystal unit, wherein a front opening is provided, a set plate is provided on a rear surface of a game board which constitutes a rear housing, and a front opening is provided inside the set board. It is composed of a U-shaped front case provided with a front opening that is placed so as to face it, and a U-shaped back case that is integrally fastened with the front case sandwiched between the set plate and the set plate. Then, the set plate is fixed to the back surface of the game board, the liquid crystal panel section, the backlight unit and the control circuit unit are installed along the groove provided in the front case, and the liquid crystal panel section, the backlight unit and the control circuit unit are provided. Are connected to each other, and the U-shaped back case is combined so as to form a box-like shape, and the end projections provided on both ends of the back case side are provided with the front case front opening. surface Penetrating engagement with side through holes provided at both ends, and stoppers provided on the upper and lower surfaces of the front case penetrate through upper and lower through holes provided at upper and lower ends of the back case that engage with the stoppers. The front case and the back case are engaged with each other to be fixed in a box shape, and the support claws for fixing the set plate and the back case, which are provided on the side surfaces of the set plate, are attached to the back of the box shape formed by the front case and the back case. It is characterized in that it is fitted into side through holes provided on both side surfaces of the case.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic explanatory view of a game board 1. At a substantially central portion of the game board 1, a special symbol display device 2 capable of displaying various lottery results as to whether or not to give a game state advantageous to the player is arranged, and a special symbol start is provided immediately below the special symbol display device 2. The mouth 3 is arranged, and the normal symbol operation gates 4 are arranged on both sides of the special symbol starting port 3, respectively.

Then, a game ball is won in the special symbol starting port 3 and a random number is selected, and when the random number is a big hit value (a value that causes a specific game state), the special symbol display device 2 The variable display of special symbols is started.

The special symbol display device 2 arranged on the game board 1 is a liquid crystal display device, and as shown in FIGS. 2, 3 and 4, a veneer plate 9 (gauge that forms the game board 1 Board)
A set plate 5 provided on the back surface of the set having a front opening portion 14 and a rear storage portion, and a U-shaped opening provided on the inside of the set plate so as to face the front opening. It is composed of a front case 6 having a shape and a back case 7 having a U-shape that is integrally fastened with the front case sandwiched between the set plate and the set plate. The set plate 5, the front case 6, and the back case 7 are formed by molding a synthetic resin such as plastic. Here, FIG. 2 is a sectional view taken along the line AB in FIG. 3 on the side surface side of the set plate when the set plate, the front case, and the back case are combined and arranged on the back surface of the veneer plate (gauge plate). . FIG. 3 is a front view when viewed from the back case side in FIG. 2. FIG. 4 is an external perspective view of the set plate, the front case, and the back case.

As shown in FIGS. 2, 3 and 4, the set plate 5 has support claws 12 for fixing the set plate 5 and the back case 7.
a and 12b are provided on the side surface 23, and support claws 12c and 12d are provided on the side surface 21, respectively. The support claws 12a,
12b and the tips of the support claws 12c and 12d are hooks for fitting with side through holes 29a and 29b (not shown) and 29c and 29d, which are provided on the side surfaces 25a and 25b of the back case 7, respectively. -Shaped notches 11a, 11
b, 11c and 11d are formed respectively.

Further, the side surfaces 20, 21, 22 of the set plate 5 are
The storage part formed by 23 includes the side surfaces 20, 2
A front opening 14 is provided, which is surrounded by 1, 22, 23. The front opening 14 has a liquid crystal panel portion 32.
The display surface of is placed so that it can be seen from the game board 1.

Further, as shown in FIG. 2, the set plate 5 is a veneer plate 9 with respect to the center accessory 10 of the game board 1.
It is provided on the rear surface. The center accessory 10 and the veneer plate 9 are provided with openings (not shown) so that the center accessory 10, the veneer plate 9 and the opening 14 of the set plate 5 are overlapped with each other. The display surface 32 is visible from the game board 1. The center accessory 10 and the set plate 5 are fixed to the veneer plate 9 by a predetermined method, for example, tucker, stepper, screwing, adhesive or the like.

The front case 6 includes the front case 6 described later.
The liquid crystal panel unit 32 shown in FIG.
And groove portions 15a, 15b, 15 shown in FIGS. 4 and 6 for holding the backlight unit 31 and the control circuit unit 33.
c, 15d, 15e, 15f, 15g, 15h, and convex portions 19a, 19b, 19c, 19d, 1 forming the groove portions.
9e, 19f, 19g, and 19h are formed, respectively. The convex portion 19a is set so as to keep the distance between the liquid crystal panel portion 32 and the backlight unit 31 constant. At the same time, the groove portion 15c and the convex portion 19c are set so as to keep the distance between the backlight unit 31 and the control circuit unit 33 constant.

The liquid crystal panel section 32 is constructed by integrally disposing a liquid crystal display element section on a diffuser plate (not shown) for diffusing backlight light which is generally used. In addition, a plurality of drivers (not shown) are respectively arranged in a portion adjacent to the longitudinal side portion of the liquid crystal display element portion of the diffusion plate and the longitudinal side portion in a direction orthogonal to the longitudinal side portion, and a control circuit is provided from each of them. A lead wire portion 38 for connecting to an electronic circuit of the unit 33 is drawn out from the connector 39 (the lead wire portion 38 and the connector 39
Is represented by a virtual broken line for easy understanding). The liquid crystal panel section 32 configured as described above is arranged in the groove section 15a of the front case 6 so that the liquid crystal display element section faces the portion of the setting plate 5 where the front opening 14 is provided,
It is assembled in a state where it is stopped by a stop wall 15i described later so as not to move out of a predetermined range.

Further, on the front case 6, stoppers 13a and 13b for fixing the front case 6 and the back case 7 are provided on the upper surface 16.
And the lower surface 18 of the side surfaces 25a and 25b of the back case 7,
The side through holes 14a and 14b into which the end convex portions 28a and 28b provided at the respective end portions are engaged and engaged are the front opening 2.
4 are provided at the end portions 14c and 14d of the surface 17 provided therein, respectively.

The front case 6, as shown in FIG. 6 (a), is formed of a single molded plate. As shown in the enlarged view of FIG. 6B, the one plate is bent into a U shape at the folding portions 50 and 51 having a V-shaped hinge function, and has a substantially rectangular shape as shown in FIG. Bottom plane part 24 of the box
It is formed in a shape in which is removed. As shown in FIG. 6, the folding parts 50, 51 are formed in parallel along the groove part, and the side surfaces 20, 21, 22, of the setting plate 5 are formed.
When the folding parts 50, 51 are bent in a U shape so that they can be fitted inside the storage part formed by 23, the height H2 and the width W2 thereof are the side surfaces 20, 2 of the setting plate 5.
The height H1 and the width W1 inside the storage portion formed by 1, 22, and 23 are equal to or slightly smaller than the width H1.

Grooves 15a, 15 formed on the upper surface 16 and the lower surface 18 when the folding parts 50, 51 are bent in a U shape.
b, 15c, 15d and groove portions 15e, 15f, 15g,
15h and 15h face each other. The grooves 15b, 15c, 15d, 15f, 15g, 15h are
Convex portions 19a and 19 formed on the upper surface 16 and the lower surface 18
b, 19b and 19c, 19c and 19d, 19e and 19
f, 19f and 19g, and 19g and 19h, respectively. Further, the groove portions 15a and 15e are formed by the folding portion 5
When 0 and 51 are bent in a U-shape, the standing surface formed by the surface 17 provided with the front opening 24 and the projections 19a and 19 are formed.
It is a groove formed by e respectively.

Grooves 15a, 15b, 15c, 15d
And one end of the groove portions 15e, 15f, 15g, 15h
The stop walls 15i, 15j, 15k, 151, 15m, 15n, (on the side opposite to the end where the liquid crystal panel section 32, the backlight unit 31, and the control circuit unit 33 are inserted),
15p and 15q are respectively provided, and the liquid crystal panel section 32, the backlight unit 31, and the control circuit unit 33 are configured to limit the movable range, and are respectively arranged at predetermined positions of the opening 24. It is stipulated to be done.

The stop wall is either the upper surface 16 or the lower surface 1
It may be any one of the groove portions provided in the No. 8 groove. or,
The stop wall of the groove portion in which the liquid crystal panel portion 32, the backlight unit 31, and the control circuit unit 33 are not inserted may be omitted.

As shown in FIG. 2, the liquid crystal panel 32 is inserted in the groove 15a, the backlight unit 31 is inserted in the groove 15b, and the control circuit unit 33 is inserted in the groove 15d along the groove.

On the side surfaces 25a and 25b of the back case 7, end portions that engage through side through holes 14a and 14b provided at both ends of the surface of the front case 6 on which the front opening 24 is provided, respectively. Set plate 5 provided with convex portions 28a and 28b on both side surfaces 23 and 22 of the set plate 5 at the ends thereof.
And supporting claws 12a, 12b, 1 for fixing the back case 7
Side through holes 29 in which 2c and 12d are respectively locked
a, 29b, 29c and 29d are provided respectively.

Further, upper and lower through holes 42a and 42b, which penetrate and engage with the stoppers 13a and 13b provided on the front case 6, respectively, are provided at the upper and lower ends of the upper flat surface portion 27, respectively.
The folding protrusions 43a and 43b are provided respectively.

The upper and lower through-holes 42a, 42b are provided with stoppers 13a, 1 provided on the front case 6 when the front case 6 and the back case 7 form a substantially rectangular box.
Both cases are fixed by penetrating engagement by 3b.

Further, on the side surface 25b of the back case 7, an opening cutout portion from which a cable 40 connected to a predetermined signal line of a pachinko machine (not shown) provided in the control circuit unit 33 shown in FIG. 5 is drawn out. 30a is formed.

A through hole 30f through which the wind from the blower 8 passes is provided in the upper plane portion 27 of the back case 7, and the blower 8 is provided.
Projections 30b, 30c for fixing the and support claws 30d, 30
e are formed so as to surround the through hole 30f. The blower 8 is inserted into the protrusions 30b and 30c, and the side portions 8c of the blower 8 are inserted into the protrusions 30b and 30c.
8d by the support claws 30d and 30e, the upper portion 8a of the blower 8,
The lower portions 8b are fixed respectively. The power line 8e of the fixed blower is connected to a predetermined power source of a pachinko machine (not shown).

Groove 15a, groove 15b, and groove 15d
The groove width and the length thereof are such that the liquid crystal panel section 32, the backlight unit 31, and the control circuit unit 33 can slide along the groove, respectively.
The width and the length of the backlight unit 31 and the control circuit unit 33 are equal to or slightly larger than the width and the length, respectively. As shown in FIG. 5, the liquid crystal panel unit 32 and the backlight unit 31 are provided with cables 38 and 35 for connecting to the control circuit unit 33, respectively, and connectors 39 and 35, respectively.
As shown in FIG. 2, the connectors 36 and 37, which are pulled out from the control circuit unit 33 and are provided on the substrate 33c of the control circuit unit 33, are connected to each other.

Further, the control circuit unit 33 includes a substrate 33.
Predetermined semiconductors 33a and 33b are mounted on c, and a predetermined operation is performed on the liquid crystal panel unit 32 and the backlight unit 31. Control circuit unit 33,
The liquid crystal panel portion 32 and the backlight unit 31 are inserted in the groove portion in the A direction, respectively, and the stop walls 15i, 15j, 15k, 151, 15 formed in the groove portion.
It stops at m, 15n, 15p and 15q.

FIG. 2 shows a case in which the set plate 5, the front case 6, and the back case 7 are combined to form a box shape, and the box board 9 (gauge board) forming the game board 1 is arranged on the back surface of the box board. It is a sectional view of the side surface 21 side of the set plate 5. In addition, FIG.
FIG. 7 is a front view when viewed from the back case 7 side.
The mounting structure of the liquid crystal unit, which is assembled in a box shape as a whole, will be described with reference to FIGS.

In FIG. 2, a center accessory 10 is arranged on the front surface of the veneer plate 9 (gauge plate), and a set plate 5 is arranged on the rear surface thereof so that their openings are aligned with each other. The stopper 1 is attached to a storage portion formed by the side surfaces 20, 21, 22, 23 (22 and 23 are not shown) of the set plate 5.
3a, 13b and upper and lower through holes 42a, 42b (not shown)
The front case 6 and the back case 7, which are fitted with each other, are fitted to each other and the supporting claws 12a, 12b, 12c, 12d (none of which are shown) and the side surface through holes 29a, 29b, 29c, 29d.
It is fixed by (not shown).

The front case 6 includes a liquid crystal panel section 32, a backlight unit 31, and a control circuit unit 3.
3 are respectively inserted in the grooves 15a, 15b, 15d, the liquid crystal panel section 32 is a cable 38 via a connector 39, the backlight unit 31 is a cable 35 via a connector 34, and the control circuit unit 33 is mutually connected. It is connected to the. From the control circuit unit 33,
The cable 40 is pulled out from the opening notch 30 (not shown) via the connector 41.

A method of mounting the liquid crystal unit mounting structure formed as described above will be described below. First,
The center accessory 10 is attached to the surface of the game board 1. Then, the set plate 5 is fitted so that the openings 14 of the set plate 5 overlap each other from the back of the center accessory 20, that is, the back of the veneer plate 9 forming the game board 1. The center accessory 10 and the set board 5 are provided with a veneer board 9 by a predetermined method, for example, tucker, stepple, screwing, or adhesive.
Fixed to.

Inside the set plate 5, a front case 6 having a U-shape provided with a front opening 24 to be placed so as to face the front opening, and the front case 6 together with the set plate 5. The U-shaped rear case 7 that is integrally fastened in a state of being sandwiched between them is assembled as follows so that the entire case becomes a box shape.

The liquid crystal panel 32 and the backlight unit 3 are provided along the predetermined groove provided in the front case 6.
1 and the control circuit unit 33 are incorporated. Then, the liquid crystal panel section 32 and the backlight unit 31 are connected to the cable 3
The cables 40 of the control circuit unit 33 are connected to the control circuit unit 33 by means of 8 and 35, respectively, and the cable 40 of the control circuit unit 33 is pulled out from the opening notch 30 a of the back case 7.

Sides 25a, 2 of the U-shaped back case 7
End projections 28a provided at the respective ends of 5b,
28b is fitted through the side through holes 14a and 14b provided in the end portions 14c and 14d of the surface 17 of the front case 6 so as to fit therethrough. At the same time, the stoppers 13a and 13b provided on the upper surface 16 and the lower surface 18 of the front case 6 and the upper and lower penetrating protrusions 43a and 43b provided on the upper and lower ends of the upper flat surface portion 27 of the back case 7, respectively. Hole 42
The parts a and 42b are fitted to each other and the whole is fixed in a box shape.

The front case 6 and the back case 7 fixed to the box shape are inserted into the inside of the set plate 5 fixed to the veneer plate 9, and the front case 6 is attached to the front opening 14 of the set plate 5.
Insert until it hits. In this state, the support claws 12a, 12b, 1 for fixing the set plate 5 and the back case 7 provided on the side surfaces 23, 21 of the set plate 5 respectively.
Hook-shaped notch 11 provided at the tip of 2c, 12d
a, 11b, 11c and 11d are side surface through holes 2 respectively.
9a, 29b, 29c and 29d are fitted.

Then, the blower 8 is provided on the upper flat surface portion 27 of the back case 7, and the convex portions 30b and 30c and the supporting claws 30d,
Inserted between 30e and fixed, power line 8e of blower 8
Is connected to a predetermined power source of a pachinko machine (not shown).
From the opening notch 30a of the back case 7 to the control circuit unit 3
A cable 40 of No. 3 is pulled out and connected to a predetermined signal line of a pachinko machine (not shown).

[0042]

According to the liquid crystal unit mounting structure of the first aspect of the present invention, it is composed of a set plate, a front case and a back case, and is assembled into a box shape by fitting and locking the whole.
By adopting a structure in which the liquid crystal panel unit, the backlight unit, and the control circuit unit are installed along the groove provided in the front case, it is possible to provide a liquid crystal unit mounting structure suitable for recycling of a pachinko machine.

According to the liquid crystal unit mounting structure of the second aspect, since the front case has the V-shaped folding portion having the hinge function, one plate is bent in a U-shape to form a liquid crystal. A case having upper and lower groove portions for holding the panel portion, the backlight unit and the control circuit unit is easily formed.

According to the third aspect of the present invention, the liquid crystal unit is assembled by attaching the set plate to the veneer plate forming the game board, fitting the front case and the back case, and combining them in a box shape by locking. As a result, each part can be easily maintained, replaced, and disassembled, and recycling can be promoted.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of a game board.

FIG. 2 is a sectional view of a side surface of the set plate when the set plate, the front case, and the back case are combined and arranged on the back surface of the veneer plate (gauge plate).

FIG. 3 is a front view when viewed from the back case side in FIG.

FIG. 4 is an external perspective view of a set plate, a front case, and a back case.

FIG. 5 is an external perspective view of a liquid crystal panel unit, a backlight unit, and a control circuit unit.

FIG. 6 is an external perspective view before the front case is bent and formed.

FIG. 7 is a cross-sectional view of a conventional liquid crystal display device for a pachinko machine.

[Explanation of symbols]

5 set plate 6 front case 7 back case 8 blower 9 veneer plate 10 center accessory 12a, 12b, 12c, 12d support claws 13a, 13b stoppers 14a, 14b side through hole 14 front opening 15a, 15b, 15c, 15d, 15e, 15f, 1
5g, 15h Grooves 19a, 19b, 19c, 19d, 19e, 19f, 1
9g, 19h Convex portion 28a, 28b End convex portion 29a, 29b, 29c, 29d Side through hole 31 Backlight unit 32 Liquid crystal panel 33 Control circuit unit 42a, 42b Upper and lower through holes

Claims (3)

[Claims] 1. A mounting structure for a liquid crystal unit mounted and used on a pachinko machine, comprising: a set plate having a front opening provided on the back surface of a game board and a rear housing; A U-shaped front case provided with a front opening that is placed inside so as to face the front opening,
It is composed of a U-shaped back case that is integrally fastened in a state of being sandwiched between the front case and the set plate, and the whole is combined in a box shape. The front case is provided with a hook-shaped supporting claw for fixing the back case, and the front case has a groove portion for holding the liquid crystal panel part, the backlight unit and the control circuit unit, which is incorporated in the front case, and the front case and the back case. Stoppers for fixing the case are provided on the upper surface and the lower surface, and side through-holes through which end protrusions provided on both ends of the back case are engaged are provided at both ends of the surface provided with the front opening. In the back case, end projections that engage through side through holes provided at both ends of the surface of the front case where the front opening is formed are provided at both end portions of the side surface, and the set plate side surface is provided. And the set plate provided in Side through-holes to which support claws for fixing the back case are locked are provided on both side surfaces, and upper and lower through-holes are provided at the upper and lower ends for penetrating engagement with stoppers provided on the front case. Characteristic liquid crystal unit mounting structure. 2. The liquid crystal unit mounting structure according to claim 1, wherein the front case has a V-shaped folding portion having a hinge function. 3. A set plate provided on the back surface of the game board that constitutes a front surface opening portion and a rear surface storage portion, and a front surface opening portion that is placed inside the set plate so as to face the front surface opening portion. It is composed of a U-shaped front case provided and a U-shaped back case that is integrally fastened with the front case sandwiched between the set plate and the set plate on the back of the game board. Fix, incorporate the liquid crystal panel unit, the backlight unit and the control circuit unit along the groove provided in the front case,
The liquid crystal panel, the backlight unit, and the control circuit unit are connected to each other, and the U-shaped back case is combined so as to form a box shape as a whole, and the end protrusions provided on both ends of the side surface of the back case. Through the side through holes provided at both ends of the surface of the front case where the front opening is provided, and the stoppers provided at the upper and lower surfaces of the front case are engaged with the back through the stoppers. The front case and the back case are fixed in a box shape by penetratingly engaging the upper and lower through holes provided at the upper and lower ends of the case, and the supporting claws for fixing the set plate and the back case provided on the side surface of the set plate are provided. A method of mounting a liquid crystal unit, characterized in that the liquid crystal unit is fitted into side through holes provided on both sides of a box-shaped back case formed by a front case and a back case.