JP2001029620A - Circuit device for game - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circuit device for game where the fact of an illegal action in a circuit board itself is left as traces in the case that an illegal action is performed. SOLUTION: In this circuit device 6 for game provided with the circuit board 41 and upper and lower covers 21 and 61 for covering the circuit board 41 provided in a game machine, plural fixable parts are formed at the overlap part of the circuit board 41 and the lower cover 61. The fixable parts are fixed at the time of covering the circuit board 41 with the upper and lower covers 21 and 61 and the fixed fixable parts are removed at the time of separating the circuit board 41 and the upper and lower covers 21 and 61.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game circuit device having a circuit board used for a game machine such as a pachinko game machine and a slot machine.

[0002]

2. Description of the Related Art For example, a pachinko game machine is provided with a game control board on which electronic circuits such as a CPU for controlling the operation thereof and ROMs and RAMs as storage elements are arranged. This game control board is housed in a board box to protect the circuit from the outside and attach it to the back side of the gaming machine. This substrate box is configured by stacking a bottom member and a lid member.

Since a program for game control is stored in the ROM, illegally performing a game different from a normal game by replacing the ROM or rewriting a program in the ROM may be performed. is there. In order to prevent this fraud, it is conceivable to make the board box a structure that is difficult to open.

On the other hand, a game machine installed in a game store is inspected for a board that has been tampered with by a public organization, specifically, an inspection of the contents of the ROM. If the structure cannot be opened or cannot be easily opened, it will hinder the inspection of the circuit board in the board box. If you break the board box for such inspection or repair of the circuit board,
The board box cannot be reused.

[0005] In order to solve the above-mentioned problem, a sealing seal is applied to an overlapping portion of a bottom member and a lid member of a substrate box. Was used to cheat.

Therefore, illegal opening of the circuit board is prevented,
There has been proposed a substrate box that can be opened at the time of inspection or repair, and can be returned to a structure that prevents unauthorized opening after inspection or repair. One example is disclosed in JP-A-9-2
No. 25092. This is a control circuit device in which a control circuit board on which electronic components are mounted is housed inside a box body including at least a bottom member (bottom member) and a front member (lid member). When the and the front member are assembled, an overlapping portion is formed so as to overlap with each other, and unauthorized opening prevention is enabled at a plurality of locations of the overlapping portion to prevent unauthorized opening of the box body. A connection portion is formed, and one of the plurality of connection portions for preventing unauthorized opening is set as a spare and left in a state where the connection for preventing unauthorized opening is not performed. And, when the box body is opened after connecting the connection part for preventing unauthorized opening,
It has a structure in which traces of opening the box body remain at the joint for preventing unauthorized opening.

[0007]

However, as described above, the joint for preventing unauthorized opening of the box body is provided at the overlapping portion where the bottom member and the lid member overlap each other when the bottom member and the lid member are assembled. When the box body is opened, a new bottom member may be formed even if a trace of opening remains at the joint for preventing unauthorized opening, that is, even if traces of opening remain at the bottom member and the lid member. And a lid member,
If an illegally processed circuit board is accommodated therein, no trace of fraudulent activity remains, making it difficult to detect the fact of fraudulent activity.

The present invention has been made in view of the above circumstances, and provides a game circuit device in which, when an illegal act is committed, the fact remains as a trace on the circuit board itself.

[0009]

According to a first aspect of the present invention, there is provided:
In a game circuit device provided with a circuit board provided in a gaming machine and a cover for covering the circuit board, when a plurality of fixable portions are formed in an overlapping portion of the circuit board and the cover, and the circuit board is covered with the cover, When the fixable portion is fixed and the circuit board and the cover are separated from each other, the fixed fixable portion is removed.

According to a second aspect of the present invention, the cover comprises an upper cover covering the upper surface of the circuit board and a lower cover covering the lower surface of the circuit board, and the fixable portion is provided between the circuit board and the upper cover or the lower cover. It is characterized in that it is formed in an overlapping portion.

In a third aspect of the present invention, the cover comprises an upper cover covering the upper surface of the circuit board and a lower cover covering the lower surface of the circuit board, and the fixable portion is formed between the circuit board and the upper cover and the lower cover. It is characterized in that it is formed in an overlapping portion.

A fourth aspect of the present invention is characterized in that the circuit board includes a fixing portion fixed to the circuit board.

[0013]

According to the present invention, a plurality of fixable portions are formed at the overlapping portion between the circuit board and the cover. And
When the circuit board is covered, the fixable portion is fixed, and when the circuit board and the cover are separated from each other, the fixed fixable portion is removed. Therefore, in order to separate the circuit board from the cover after the fixable portion is once fixed, the fixed fixable portion must be removed. Since the fixable portion is formed at the overlapping portion of the circuit board and the cover, when the fixed fixable portion is removed, the portion of the circuit board and the cover forming the fixable portion is removed. Thus, a trace that separates the circuit board from the cover remains on the circuit board as well as the cover.

That is, when an unauthorized process is performed on a circuit board, traces are left on the cover and the circuit board, so that the fact of the unauthorized process can be easily found. In addition, after the circuit board and cover are separated due to improper treatment of the circuit board, a new circuit board and cover must be prepared in order not to leave traces of the circuit board and cover. Since it is hard to imagine cheating, illegal processing of the circuit board can be prevented.

According to a specific aspect of the present invention, a plurality of fixable portions can be formed at an overlapping portion between the circuit board and the upper cover or the lower cover. In addition, a plurality of fixable portions can be formed at an overlapping portion between the circuit board and the upper cover and the lower cover. Further, a plurality of fixable portions can be formed at the overlapping portion of the fixing portion fixed to the circuit board and the cover.

[0016]

Embodiments of the present invention will be described below.

FIG. 1 is a rear view of a pachinko gaming machine 1 using a circuit device according to the present invention. On the back, a power supply unit 2, a payout ball tank 3 storing payout balls, a ball discharging device 4 for paying out balls according to winning balls,
A hit ball launch control device 5 for launching a game ball, a game circuit device 6 having a plurality of fixable portions 81 to be described later and controlling a game operation of the game machine 1, and a game board surface (not shown) on the front of the game machine 1. There are provided a panel relay terminal board 7 for relaying to provided variable display devices, winning devices, winning ball sensors, lamps, LEDs, and other electrical equipment, and a card unit 8. In addition, electric devices such as a payout ball sensor (not shown), a payout number detection switch, and a solenoid are provided.

FIG. 2 is a plan view of the game circuit device 6, and FIG. 3 is an exploded perspective view. Hereinafter, the configuration of the game circuit device 6 will be described with reference to FIGS.

The game circuit device 6 includes a game control board 41,
It comprises an upper cover 21 and a lower cover 61.

The shape of the upper cover 21 is a box shape made of synthetic resin and having an open bottom. On the upper surface of the upper cover 21, there are provided a heat radiation opening 23 for releasing the heat generated by the game control board 41 to the outside, an inspection history display section 25 described later, and an opening / closing method instruction section 26. Upper cover 21
A connector opening 22 for a connector portion 42 provided on the game control board 41 is provided on a side surface of the game control board 41. On the inner surface of the upper cover 21, a locking hanging piece 24 having a claw portion 24a extending downward and engaging with the game control board 41, a spare screw holding portion 27 for holding a spare one-way screw 47, and A spare seal holding unit 28 for holding a spare seal 29 is provided.

The game control board 41 includes an electronic circuit 9 such as a CPU and a ROM, a connector section 42 for communication, a screw opening 43, and a plurality of board projections 4 provided with board projection holes 46.
5, and a locking port 48 for locking the locking hanging piece 24 provided on the upper cover 21. An identification number for identification is attached to each board protrusion 45.

The lower cover 61 is provided with a boss 62 for fixing the game control board 41 with the screw 44, a mounting boss 63 for fixing the game control board 41 to the game machine 1, and a stop for fixing the one-way screw 47 through the above-mentioned board projecting hole 46. A plurality of lower projecting portions 65 having mounting holes 66; and a base supporting portion 67 for supporting the game control board 41 by contacting the center of the lower surface of the game control board 41.
It has.

The substrate protrusion 45 and the lower protrusion 65
In order to facilitate the removal of the fixable portion 81 fixed as described later, a broken line cut (so-called perforation) 4
9 and 68 are provided so as to overlap each other (only the perforations 68 of the lower protrusion 65 are shown in FIG. 3).

A seal 29 is attached from the upper cover 21 to the lower cover 61.

FIG. 4 shows the IV of the game circuit device 6 shown in FIG.
FIG. 4 is a sectional view taken along line IV. As shown, the game control board 41
And a lower protruding portion 65 provided on the lower cover 61, a fixable portion 81 is formed. The fixable portion 81 is formed by screwing the one-way screw 47 into the fixing hole 66 through the board projecting hole 46.
Fixed. Unless the fixed portion 81 is removed, the lower cover 61 cannot be separated from the game control board 41.

The hanging hanging piece 2 provided on the upper cover 21
4 has the claw part 24a which protrudes outside as mentioned above. When the upper cover 21 is mounted on the game control board 41 from above, the locking hanging piece 24 moves downward while being elastically deformed. Then, when the claw portion 24a comes out below the locking port 48, the upper cover 21 is in a state of being engaged with the game control board 41. To release the engaged state, the upper cover 21 must be moved upward with the claw portion 24a moved below the locking port 48. For this reason,
Once the upper cover 21 and the lower cover 61 are attached to the game control board 41, the game control board 41 cannot be separated from the upper cover 21 unless the fixed fixable portion 81 is removed.

Here, the board perforations 49 and the lower perforations 68 provided on the board protruding portion 45 and the lower protruding portion 65 forming the fixable portion 81 overlap each other. For this reason, when an upward or downward force is applied to the fixable portion 81 at the time of inspection or the like, the board protrusion 45 and the lower protrusion 65 are broken at the perforations that are vertically overlapped. The part 81 can be easily removed. Note that such perforations 49 and 68 need not necessarily be provided. In that case, the fixable portion 81 may be cut with a nipper or the like.

In this embodiment, the fixable portion 81 is fixed with the one-way screw 47, but may be fixed with a rivet or heat welding.

In the present embodiment, when the fixed portions 81 fixed at two positions are removed from the ten fixed portions 81 formed by inspection after inspection as shown in FIG. In order to seal the board 41, the remaining fixable portion 81 may be fixed, and the upper cover 21 may be attached to the game control board 41. For this reason, even after inspection, etc.
Unauthorized opening can be prevented.

FIG. 5 is a front view of a portion of the inner surface of the upper cover 21 where a one-way screw 47 and a spare screw holding portion 27 for holding the one-way screw 47 are provided. After removing the fixable portion 81 fixed by inspection or the like and opening the game control board 41, by fixing one of the remaining fixable portions 81 using the spare one-way screw 47, the game control board can be easily formed. 41 can be sealed.

FIG. 6 is a front view of a spare seal 29 provided on the inner surface of the upper cover 21 and a spare seal holding portion 28 for holding the seal 29. Peeling off the seal 29 by inspection or the like, the game control board 4
After opening 1, the game control board 41 can be easily sealed using the spare sealing seal 29.

FIG. 7 is a front view of the inspection history display section 25 provided on the upper cover 21. This inspection history display section 2
5, the identification number given to each substrate protrusion 45 in FIG. 2 is described. Below the numbers indicating the identification numbers, there are provided blank spaces for displaying the inspection dates and marks, respectively.

According to inspection or the like, any of the fixable portions 81
Is removed, a date and a mark are written in a blank portion of the inspection history display unit 25 corresponding to the identification number given to the substrate protruding portion 45 constituting the removed fixable portion 81.

As shown in FIG. 1, the fixable portion 81
A gaming machine clerk can use the gaming machine 1 for maintenance and inspection of the gaming machine 1.
Is in a visible position when opened. Therefore, by comparing the description of the inspection history display section 25 with each of the fixable sections 81, it can be easily determined whether or not the illegal game control board 41 has been illegally opened.

FIG. 8 is a front view of the opening / closing method instructing section 26 provided on the upper cover 21. By following the illustrated procedure for opening and closing the game control board 41, the game control board 41 can be easily inspected.

[Second Embodiment] FIG. 9 shows a game circuit device 1 according to the second embodiment.
1 is an exploded perspective view of FIG. The shape of the upper cover 91 is a box shape made of synthetic resin with an open bottom surface. This top cover 9
On the upper surface of 1, an opening 23 for radiating heat generated by the game control board 41 to the outside, an inspection history display section 25, and an opening / closing method instruction section 26 are provided. Top cover 9
1 has a connector portion 4 provided on the game control board 92.
2 is provided with an opening 22 for a connector, and an upper protruding portion 31 having an upper protruding hole 32.

In this embodiment, as a cut for facilitating removal of the fixed portion 82 fixed as described later,
An upper perforation 51, a substrate perforation 49, and a lower perforation 68 are provided on the upper protruding portion 31, the substrate protruding portion 45, and the lower protruding portion 65, respectively (in FIG. 9, the upper perforation 31 and the lower perforation 68 are formed). Shown).

The game control board 92 includes various electronic circuits 9, a connector section 42 for communication, a plurality of board protrusions 45 provided with screw openings 43 and board protrusion holes 46. An identification number for identification is attached to each board protrusion 45.

FIG. 10 is a sectional view of the game circuit device 11. As shown in FIG. As shown in the drawing, the upper protruding portion 31 provided on the upper cover 91, the board protruding portion 45 provided on the game control board 92, and the lower protruding portion 65 provided on the lower cover 61 form a fixable portion 82. You. This fixable part 8
2 is fixed by screwing a one-way screw 47 into the fastening hole 66 through the upper projecting hole 32 and the substrate projecting hole 46. Unless the fixed portion 82 is removed, the upper cover 91 and the lower cover 61 cannot be separated from the game control board 92.

As shown in FIG. 10, when the fixable portion 82 is formed, the board perforations 49, the upper perforations 51, and the lower perforations 68 overlap each other. Therefore, if a force is applied upward or downward to the fixable portion 82, the upper projecting portion 31, the substrate projecting portion 45, and the lower projecting portion 65 are broken at the vertically overlapping perforations, so that the fixed fixable portion 82 is fixed. 82 can be easily removed.

Any of the fixable parts 82 for inspection or the like
Is removed, by writing a date and a mark in a blank portion of the inspection history display portion 25 corresponding to the identification number given to the board protrusion 45 constituting the removed fixable portion 82, Fraud can be easily detected. Note that the upper cover 91 is provided so that the game shop clerk can visually confirm whether or not the board protrusion 45 has been removed due to cheating when the game machine 1 is opened for maintenance and inspection of the game machine 1 or the like. Is desirably transparent. The identification number may be given to each upper protruding portion 31.

Next, referring to FIGS. 11 (A) and 11 (B), a person who intends to perform an illegal operation on the game control board 92 may use the one-way screw 4 which seals the game control board 92.
The upper protrusion 33 and the sealing cap 36, which are another mode of the upper protrusion 31 for preventing the user from touching the cover 7, will be described.

FIG. 11A is a perspective view showing an upper protruding portion 33 which is another mode of the upper protruding portion 31. FIG. The upper protruding portion 33 has an embedding hole 34. The embedding hole 34 has a projection 38 of a sealing cap 36 described later.
A groove 35 is provided for engaging the hook. Further, below the embedding hole 34, an upper protruding hole 32 for screwing the one-way screw 47 into the fastening hole 66 is provided.

FIG. 11B is a perspective view of the sealing cap 36. The sealing cap 36 is provided with a cap 37 for closing the embedding hole 34, that is, for hiding the head of the one-way screw 47, a projection 38, and a leg 39 connecting the cap 37 and the projection 38.

When the sealing cap 36 is inserted from above the embedding hole 34, the leg 39 moves downward while being elastically deformed. Then, the projection 38 is engaged with the groove 35, so that the one-way screw 47 cannot be touched.

[Third Embodiment] FIG. 12 shows a game circuit device 1.
FIG. 13 is an exploded perspective view of the game circuit device 12. Hereinafter, the configuration of the game circuit device 12 will be described with reference to FIGS.

The game circuit device 12 includes a game control board 11
1, an upper cover 101 and a lower cover 121.

The shape of the upper cover 101 is a box shape made of synthetic resin with an open bottom. The upper cover 101 has a heat dissipation opening 23 for releasing heat generated by the game control board 111 to the outside, a connector opening 22 for a connector portion 42 provided on the game control board 111, and an inspection history display section. 25, opening / closing method instruction unit 26, plural concave portions 102
An upper perforation 103 is provided so as to surround each of the recesses 102. An identification number for identification is given beside each recess 102.

The game control board 111 includes various electronic circuits 9,
A connector portion 42 for communication, a screw opening 43, a fixing boss 112 for fixing the one-way screw 47, and a board perforation 113 surrounding the fixing boss 112 are provided.

The lower cover 121 is mounted on the game control board 111.
62 for stopping the game with the screw 44, the mounting boss 63 for stopping the game machine 1, the outer cylinder 122, and the game control board 1.
11 and a lower perforation 123 (see FIG. 1), which is in contact with the center of the lower surface of the base 11 and supports the game control board 111.
4) is provided.

FIG. 14 shows the game circuit device 1 shown in FIG.
FIG. 4 is a sectional view taken along line XIV-XIV of FIG. Here, the fixable portion is
It is formed by the concave portion 102 and the fixing boss 112 attached to the game control board 111. The fixable portion is fixed by screwing the one-way screw 47 into the fixing boss 112 via the concave portion 102. The upper cover 101 cannot be separated from the game control board 111 unless the fixed portion that is fixed is removed.

As described above, an upper perforation 103 is provided on the upper surface of the upper cover 101 so as to surround each recess 102, and a board perforation 113 is provided on the game control board 111 so as to surround each fixing boss 112. Have been.

The lower cover 121 is provided with a lower perforation 123 along the inside of each outer cylinder 122.

To remove the fixed portion that can be fixed, a force is applied to the head of the one-way screw 47 downward with a punch or the like.
Then, the concave portion 102 comes off the upper cover 101 at the upper perforation 103, and a part of the game control board 111 surrounded by the board perforations 113 and the fixing boss 112 come off from the game control board 111.

Next, the bottom of the fixing boss 112 hits a portion surrounded by the lower perforation 123, and the portion separates from the lower cover 121 to form an opening. The above recess 10
2. A part of the game control board 111 surrounded by the one-way screw 47, the fixing boss 112 and the board perforation 113 is removed from the game circuit device 12 through this opening. That is, the fixable portion is removed. The outer cylinder 122 is provided to prevent the above-mentioned removed matter from remaining in the gaming circuit device 12.

When one of the fixable parts is removed for inspection or the like, the date and the stamp are written in the blank part of the inspection history display part 25 corresponding to the identification number of the concave part 102 constituting the removed fixable part. Is written, it is possible to easily detect fraudulent acts. When a game store clerk opens the gaming machine 1 for maintenance or inspection of the gaming machine 1 or the like, a part of the game control board 111 has been removed due to cheating, that is, the game control board 111 is surrounded by the board perforations 113. The upper cover 101 is desirably transparent so that the user can easily see whether or not the removed portion has been removed. After the game control board 111 is inspected or the like, the non-fixable fixable portion can be fixed and the game control board 111 can be sealed again.

In this embodiment, a spare screw, a spare screw holding portion, a spare sealing seal, and a spare seal holding portion may be provided. Further, an outer cylinder may be provided on the upper cover 101 so as to surround the recess 102. other,
The recess 102 may be provided with a groove so that the sealing cap 36 cannot contact the one-way screw 47.

[Fourth Embodiment] FIG. 15 is an exploded perspective view of a game circuit device 13. This game circuit device 13
The game control board 151 includes an upper cover 141 and a lower cover 161.

The upper cover 141 has a configuration in which the concave portion 102 of the upper cover 101 of the third embodiment is replaced by a long concave portion 142. An upper perforation 143 is provided to surround each long recess 142.

The game control board 151 has a connector section 42 for communication, a screw opening 43, fixing holes 152 for passing the one-way screw 47, and board perforations 153 so as to surround the fixing holes 152.

The lower cover 161 is connected to the game control board 151
Boss 62, mounting boss 63,
An inner boss 162 for screwing the one-way screw 47, an outer cylinder 122, a base support portion 67 that contacts the center of the lower surface of the game control board 151 and supports the game control board 151, and a lower perforation 163 (FIG. 16) described later. ing.

FIG. 16 is a sectional view of the game circuit device 13. As shown in FIG. As described above, an upper perforation 143 is provided on the upper surface of the upper cover 141 so as to surround each elongated recess 142, and a board perforation 153 is provided on the game control board 151 so as to surround each fixing hole 152. Have been. The lower cover 161 has a lower perforation 1 between each outer cylinder 122 and the inner boss 162 along the outer cylinder 122 and the inner boss 162.
63 are provided.

The fixable portion is formed by a long recess 142 of the upper cover 141, a portion of the game control board 151 surrounded by the board perforations 153, and an inner boss 162 of the lower cover 161. The upper surface around the inner periphery of the inner boss 162 is in contact with the bottom surface of the long recess 142. Game control board 1
The upper surface of the portion 51 surrounded by the board perforation 153 is in contact with the bottom surface of the long recess 142, and the lower surface is in contact with the upper surface around the outer periphery of the inner boss 162.

To remove the fixed portion that can be fixed, a force is applied to the head of the one-way screw 47 downward with a punch or the like. Then, the long concave portion 142 comes off the upper cover 141 at the upper perforation 143, a part of the game control board 151 surrounded by the board perforation 153 comes off the game control board 151, and the inner boss 162 becomes the lower perforation 163. Is separated from the lower cover 161 at the boundary. Then, a part of the game control board 151 surrounded by the long recess 142, the one-way screw 47, the board perforation 153 and the inner boss 162 are removed from the game circuit device 13.

When a game store clerk opens the gaming machine 1 for maintenance or inspection of the gaming machine 1 or the like, a part of the game control board 111 has been removed due to cheating, that is, the game control board 111 is surrounded by the board perforations 153. Top cover 1 to make it easier to see if the
41 is desirably transparent. After the game control board 151 is inspected, the non-fixable fixable portion can be fixed, and the game control board 151 can be sealed again.

[0066]

[Brief description of the drawings]

FIG. 1 is a view showing a rear surface of a gaming machine according to a first embodiment.

FIG. 2 is a plan view of the game circuit device according to the first embodiment.

FIG. 3 is an exploded perspective view of the game circuit device of the first embodiment.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a front view of a portion of the first embodiment where a spare screw holding portion is provided.

FIG. 6 is a front view of a spare seal holding unit according to the first embodiment.

FIG. 7 is a front view of an inspection history display unit according to the first embodiment.

FIG. 8 is a front view of an opening / closing method instruction unit according to the first embodiment.

FIG. 9 is an exploded perspective view of a game circuit device according to a second embodiment.

FIG. 10 is a sectional view of a game circuit device according to a second embodiment.

FIG. 11 is a perspective view of an upper projecting portion and a sealing cap according to another mode of the third embodiment.

FIG. 12 is a plan view of a game circuit device according to a third embodiment.

FIG. 13 is an exploded perspective view of a game circuit device according to a third embodiment.

FIG. 14 is a sectional view taken along line XIV-XIV of FIG. 12;

FIG. 15 is an exploded perspective view of a game circuit device according to a fourth embodiment.

FIG. 16 is a sectional view of a game circuit device according to a fourth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Game machine, 2 ... Power supply part, 3 ... Payout ball tank, 4 ... Ball ejection device, 5 ... Ball launch control device, 6 ... Game circuit device,
7 ... panel relay terminal board, 8 ... card unit, 11, 1
2, 13: game circuit device, 21: upper cover, 22 ...
Connector opening, 23: heat dissipation opening, 24: locking hanging piece, 25: inspection history display section, 26: opening / closing method instruction section, 2
7: spare screw holder, 28: spare seal holder, 29 ...
Sealing seal, 31, 33: Upper projecting portion, 36: Sealing cap, 41: Game control board, 42: Connector portion, 45 ...
Board protruding portion, 46: board protruding hole, 47: one-way screw, 48: locking port, 61: lower cover, 65: lower protruding portion, 66: fastening hole, 91, 101: upper cover, 102
... recess, 111 ... game control board, 112 ... fixed boss, 1
21 ... lower cover, 122 ... outer cylinder, 141 ... upper cover, 142 ... long recess, 151 ... game control board, 152 ...
Fixing holes, 161, lower cover, 162, inner boss.

Claims (4)

[Claims] 1. A game circuit device comprising: a circuit board provided in a gaming machine; and a cover for covering the circuit board, wherein a plurality of fixable portions are formed in an overlapping portion of the circuit board and the cover, A game circuit device, comprising: fixing the fixable portion when covering the circuit board with the cover; and removing the fixed fixable portion when separating the circuit board from the cover. 2. The game circuit device according to claim 1, wherein
The cover includes an upper cover that covers an upper surface of the circuit board and a lower cover that covers a lower surface of the circuit board, and the fixable portion is formed at an overlapping portion between the circuit board and the upper cover or the lower cover. A game circuit device characterized by the following: 3. The game circuit device according to claim 1,
The cover includes an upper cover that covers an upper surface of the circuit board and a lower cover that covers a lower surface of the circuit board, and the fixable portion is formed at an overlapping portion between the circuit board, the upper cover, and the lower cover. A game circuit device characterized by the following: 4. The game circuit device according to claim 1, wherein said circuit board includes a fixing portion fixed to said circuit board.