JP2013165794A - Circuit board for game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circuit board for game machines capable of preventing a fraud by Nikoichi (producing a unit by combining components of a plurality of defective units) and consequently further improving fraud prevention properties.SOLUTION: An auxiliary board 50 including an auxiliary conductive portion 51 to be served as a part of an electronic circuit in the side of a main control board 30, and an easy rupture portion 52 liable to be ruptured compared with other portions is connected to a main control board 30. The easy rupture portion 52 is configured to be ruptured when external force is applied to the auxiliary board 50, such that the auxiliary conductive portion 51 is cut off. Further, a connection 53 of the auxiliary board 50 is configured to peel a part of a conductive pattern 34 of the main control board 30, when the auxiliary board 50 is peeled from the main control board 30. Thereby, when a person applies large force to the auxiliary board 50 or tries to peel the auxiliary board 50, the electronic circuit in the side of the main control board 30 is broken and it becomes impossible to secure the main control board 30 with no damage, thus making it impossible to do Nikoichi.

Description

  The present invention relates to a circuit board for gaming machines provided with a main board on which a plurality of electronic elements constituting a predetermined circuit are attached and a conductive pattern for electrically connecting these electronic circuits is formed.

Conventionally, a gaming machine of a slot machine has a gaming device necessary for playing a game, a control device in which a control circuit for controlling the operation of the gaming device is formed, and a power supply device that supplies power to the gaming device and the control board Etc. are provided.
Among these, the control device includes a ROM that stores a program for controlling gaming operations, and a CPU that includes an LSI or the like having a high-speed calculation function, and a control board that executes the program stored in the ROM by the CPU. It has been.
Such a control device includes a substrate case made of transparent synthetic resin formed in a box shape, and replaces a genuine ROM provided on the control substrate with an unauthorized ROM storing an unauthorized program that is easy to win. In order to prevent illegal acts, the control board is housed inside the above-mentioned board case.

The substrate case for storing the control board has a box shape with one side opened, and a base part on which the control board is installed, and a cover part that covers the upper side of the control board installed on the base part. What is provided is common.
And these base parts and a cover part are couple | bonded together in the closed state, in order to protect the control board installed in the inside from an unauthorized act.

Here, the board case is generally formed with a screw insertion hole in the lid portion through which a screw for joining the lid portion and the base portion to each other is inserted. Then, a screw is inserted into a screw insertion hole formed in the lid, and the tip of the screw is screwed to the base so that the lid and the base are joined to each other.
Further, a sealing cap for sealing the insertion hole is fitted into the screw insertion hole. Once this sealing cap is fitted into the screw insertion hole, it cannot be removed from the lid unless the lid or the sealing cap is destroyed.

Therefore, after the lid portion and the base portion are joined to each other with the screw inserted into the screw insertion hole, the sealing cap is fitted into the screw insertion hole, and the screw inserted into the screw insertion hole is sealed with the sealing cap. If the lid or the sealing cap is not destroyed, the sealing cap cannot be removed from the lid, and consequently the substrate case cannot be opened.
In other words, the lid part is joined to the base part with screws, and the board case is closed by sealing the screw inserted through the screw insertion hole with the sealing cap, and then opening the board case, the lid part and the sealing part are sealed. Since at least one of the stop caps is destroyed and the trace remains on the lid or the sealing cap, when the substrate case is opened to illegally replace the ROM of the control board, the substrate case is not attached to the lid or the sealing cap. An open trace remains, and this trace makes it possible to clearly determine that an illegal act has been performed, thereby preventing an illegal act on the control board such as an illegal replacement of the ROM (for example, Patent Document 1).

In addition, a sealing seal is applied across both the base portion and the lid portion provided in the substrate case, and a cap that is attached to a covering position that covers the sealing seal is provided, and the cap is further covered. When removing by moving from the position, a cutting member that cuts the sealing seal is provided on the cap, and when opening the substrate case, removing the cap from the substrate case results in a substrate case in which the cutting member cuts the sealing seal. It is known (see, for example, Patent Document 2).
According to such a substrate case, when the cap is removed from the substrate case in order to open the substrate case, the sealing seal is cut by the cutting member, thereby leaving a mark indicating that the substrate case has been opened. ing.
For this reason, if the board case is opened and an illegal act is performed on the control board, such as an illegal exchange of the ROM, the sealing sticker is cut, so that the administrator of the gaming machine confirms that the illegal act has been performed. You can know and prevent damage caused by fraud.

JP 2007-312916 A JP 2010-178903 A

  In the board case as described above, a plurality of the same board cases are collected, and for each board case, the parts to be secured intact are determined to be different between the board cases, and other parts are destroyed and determined. It is possible to create a so-called two-in-one board case by securing the parts intact and making another intact board case with the secured parts. An illegal ROM is installed inside this two-in-one board case. If it is mounted and installed in the gaming machine, each board case cannot be distinguished from a genuine board case, so that illegal acts on the control board such as illegal exchange of ROM cannot be prevented.

Here, in order to prevent fraudulent actions caused by two board cases, a U-shaped bracket that directly attaches a seal seal to the ROM attached to the control board or holds the ROM attached to the IC socket from above. It is conceivable that both ends of the screw are screwed to the control board and these screws are sealed with caulking. However, if the control board is performed two by one, each control board cannot be distinguished from a genuine control board. Therefore, it is not possible to prevent illegal acts on the control board such as illegal exchange of ROM.
For this reason, there is a demand that it is possible to prevent fraud by one by one, thereby further improving the performance of preventing fraud.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to prevent illegal acts by two one by one, and therefore to further improve the performance of preventing illegal acts. An object is to provide a circuit board for a gaming machine.

Each invention described below has been made in order to achieve the above-described object, and will be described below using the embodiment of the invention shown in the drawings.
In addition, although the code | symbol used in embodiment is attached | subjected to each following component for convenience of explanation, this does not limit the technical scope of this invention.

(Claim 1)
The invention described in claim 1 is characterized by the following points.
That is, according to the first aspect of the present invention, a plurality of electronic elements constituting a predetermined circuit are attached, and a main body substrate on which a conductive pattern (34) for electrically connecting these electronic circuits is formed ( 30) a circuit board for a gaming machine comprising an auxiliary conductive portion (51) which is coupled to the main body substrate (30) and which is a part of an electronic circuit formed on the main body substrate (30). The auxiliary substrate (50) is provided, and the auxiliary substrate (50) is formed with an easily tearable portion (52) that is easier to tear than other portions across the auxiliary conductive portion (51). A coupling portion (53) coupled to the main body substrate (30) in a state of covering at least a part of the conductive pattern (34) formed on the main body substrate (30), and the easy tearing portion (52 ) Is formed such that when an external force is applied to the auxiliary substrate (50), it is torn before other parts, The auxiliary conductive portion (51) is formed to be cut as the easily tearable portion (52) is torn by an external force applied to the auxiliary substrate (50), and the conductive substrate (30) is electrically conductive. In the pattern (34), when the auxiliary substrate (50) is peeled off from the main body substrate (30), a portion of the auxiliary substrate (50) covered by the coupling portion (53) is the auxiliary substrate (50). The coupling portion (53) is formed so as to be peeled off from the main body substrate (30).

(Effect of Claim 1)
The present invention configured as described above has the following effects.
In other words, according to the first aspect of the present invention, the auxiliary substrate provided with the auxiliary conductive portion which is a part of the electronic circuit formed on the main substrate is coupled to the main substrate and formed across the auxiliary conductive portion. In addition, an easily tearable portion that is easier to tear than other portions is provided on the auxiliary substrate, and when an external force is applied to the auxiliary substrate, the easily tearable portion is torn before the other portions, thereby the auxiliary conductive portion. Therefore, if the part of the main board that should be protected from fraud is covered with the auxiliary board, the auxiliary board is removed from the main board in order to remove the auxiliary board. Is applied, the easy tearing portion is torn, the auxiliary conductive portion is cut, the circuit formed by the conductive pattern of the main body substrate is shut off, and the electronic circuit formed on the main body substrate is broken inoperably.
In addition, the auxiliary substrate is provided with a coupling portion that is coupled to the main body substrate in a state of covering at least a part of the conductive pattern formed on the main body substrate, and when the auxiliary substrate is peeled off from the main body substrate, Since the part covered by the joint part of the auxiliary board is peeled off from the main board together with the joint part of the auxiliary board, two main body boards are prepared. Of these, by destroying the main board side, the auxiliary board can be removed intact, and for the other main board, the auxiliary board side can be destroyed, removing the main board intact, and used as one by two Even when trying to separate the auxiliary substrate from the main substrate, the portion of the conductive pattern covered by the auxiliary substrate coupling portion together with the auxiliary substrate coupling portion Stripped from the body substrate, which also is blocked circuit to form a conductive pattern of the main body substrate, an electronic circuit formed on the base substrate may be destroyed inoperative.
Accordingly, the auxiliary board may be used to protect a portion of the main board from unauthorized actions, such as a ROM mounted on the main board or a pin protruding from the back surface of the main board in a connector (receptacle) mounted on the main board. If you cover it, if you try to cheat on these parts, the easy tearing part of the auxiliary board will tear, the auxiliary conductive part will be cut, and the electronic circuit formed on the main board will be broken inoperably , The purpose of cheating will not be achieved, thereby preventing cheating.
In addition, even when trying to obtain an intact main board from a plurality of main boards, if the auxiliary board is separated from the main board, the circuit formed by the conductive pattern on the main board is cut off and the electronic circuit formed on the main board is activated. Because it is impossible to destroy, it is impossible to obtain an intact main body board, and therefore, it is possible to prevent illegal acts by one by one, thereby further improving the performance of preventing illegal acts. The object is achieved.

It is a front view showing a slot machine according to an embodiment of the present invention. FIG. 3 is a front view showing the inside of the housing of the slot machine according to the embodiment. It is a front view which shows the main board | substrate case which concerns on the said embodiment. It is a disassembled perspective view which shows the main board | substrate case which concerns on the said embodiment. It is a disassembled perspective view which shows the principal part of the main board case which concerns on the said embodiment. It is a side view which shows the auxiliary substrate which concerns on the said embodiment. It is a front view which shows the auxiliary substrate which concerns on the said embodiment. It is a perspective view which shows the auxiliary substrate which concerns on the said embodiment from the front side. It is a perspective view which shows the auxiliary substrate which concerns on the said embodiment from the back side. It is sectional drawing in the XX line of FIG. It is a disassembled perspective view which shows the principal part of the main control board which concerns on the said embodiment. FIG. 6 is an enlarged front view, partly broken, showing a substrate case according to a modification of the present invention.

DESCRIPTION OF EMBODIMENTS Embodiments that are embodiments for carrying out the present invention will be described below with reference to the drawings.
[First Embodiment]
(Overview of slot machine 1)
FIG. 1 shows a slot machine 1 as a gaming machine according to the first embodiment of the present invention. In FIG. 1, the slot machine 1 performs a game in which the rotating reel 11 is stopped so that a plurality of types of symbols written on each of the three rotating reels 11 form a predetermined combination. . As shown in FIG. 1, the slot machine 1 includes a housing 2 that houses various devices of the slot machine 1 and has a rectangular front shape.
The housing | casing 2 is a box-shaped member by which the whole front surface was opened. And the front opening of the housing | casing 2 is block | closed with the front door 3 attached to the said housing | casing 2 so that rotation was possible. The front door 3 is automatically locked when it is closed.

The front door 3 includes an upper panel portion 4 and a lower panel portion 5 that substantially bisect the front surface. Below the lower panel portion 5, there is provided a tray unit 6 integrally formed with a tray portion 6A for storing medals to be paid out at the time of winning a prize. Moreover, between the upper panel part 4 and the lower panel part 5, the console 7 for performing operation which concerns on a game is formed so that it may protrude to the player side.
Here, the upper panel portion 4 and the lower panel portion 5 have a decorative plate made of synthetic resin attached to the surface in order to ensure an excellent appearance in terms of design.

(Upper panel part 4)
The upper panel portion 4 is provided with a display window 4A formed in a rectangular shape above the console 7 and in the center in the width direction in FIG.
Here, each of the three rotating reels 11 provided inside the housing 2 is marked with a plurality of types of symbols on its outer peripheral surface. The symbols of each rotary reel 11 are visible from the outside of the housing 2 through the display window 4A.

At the upper edge portion of the upper panel portion 4, there is provided an effect lighting device 4B whose front shape is formed in an inverted trapezoidal shape. The effect lighting device 4B is disposed substantially at the center of the upper edge portion of the upper panel portion 4. Both end portions of the lighting device for effect 4B are broken at positions in front of the upper panel portion 4 without reaching the corners.
In addition, in the vicinity of both corners on the upper side of the upper panel portion 4, a pair of effect lighting devices 4 </ b> C for drawing a Chinese numeral “eight” is provided while the front shape is formed in a curved belt shape. Each of these effect lighting devices 4C has an upper end portion disposed in the vicinity of the end portion of the effect lighting device 4B, and a lower end portion thereof extends obliquely downward toward the side edge of the upper panel portion 4. It has become.
Furthermore, another side lighting device 4D connected to the lower end of the lighting device for effect 4C is provided on both side edges of the upper panel portion 4, respectively. Each of these effect lighting devices 4D is formed in a strip shape elongated in the vertical direction, similar to the effect lighting device 4C. From the lower end of the effect lighting device 4C to the side edge of the upper panel portion 4 It extends along and reaches the immediate vicinity of the console 7.
Each of these lighting devices for production 4B to 4D includes a light source such as a high-intensity light emitting diode disposed inside a red lens, and the visual in the game is turned on or blinking according to the progress of the game. This enhances the production effect.

A liquid crystal display device 4E for displaying a game effect image is provided between the display window 4A and the effect lighting device 4B. The liquid crystal display device 4E displays various images including moving images as the game progresses.
On both sides of the liquid crystal display device 4E, audio output units 4F each having a speaker that generates sound effects relating to the game are provided.

(Operating console 7)
The console 7 is provided with various switches necessary for operations in the game.
That is, a key hole 7A into which a key for unlocking the front door 3 is inserted is provided at the right end portion in FIG. A medal insertion portion 7C having a medal insertion slot 7B for inserting medals is provided obliquely above and to the left of the keyhole 7A.
Three stop switches 7D that are operated when stopping each of the three rotary reels 11 are provided obliquely to the left of the medal slot 7B. Among these three stop switches 7D, a max bet switch 7E capable of betting the maximum number of medals in one operation is provided obliquely above and to the left of the stop switch 7D arranged at the left end.
In addition, a start switch 7F that is operated when rotating the three rotary reels 11 at the same time is provided on the left side of the leftmost stop switch 7D and obliquely below the left of the max bet switch 7E. Yes. In the diagonally upper left of the start switch 7F, there is a bet switch 7G that can bet one medal stored in one operation, in other words, bet switch 7G that is operated when betting one medal one by one. Yes.
Further, a settlement switch 7H for paying out medals stored at the time of settlement is provided diagonally to the left of the bet switch 7G.

(Lower panel part 5 and saucer unit 6)
The lower panel portion 5 is provided with a panel 5A on which a character or the like representing a model type of the slot machine 1 is drawn. On both sides of the panel 5A, there are provided lighting devices for production 5B formed in a strip shape elongated in the vertical direction.
The saucer unit 6 is provided with a medal payout port 6B for discharging medals paid out toward the saucer unit 6A when winning a prize, and a speaker for generating sound effects related to the game, in addition to the above-described saucer unit 6A for storing medals. A voice output unit 6C and an ashtray unit 6D for receiving cigarette ash, butts, etc. are provided.

(Internal device housed in the housing 2)
Next, an internal device provided inside the housing 2 will be briefly described.
Inside the housing 2, as shown in FIG. 2, three main board cases 40 containing a main control board 30 (to be described later) equipped with a CPU comprising a microcomputer (not shown) for controlling the gaming operation of the slot machine 1 are provided. The reel unit 10 includes a reel unit 10 having a motor (not shown) that drives each of the rotary reels 11 and a container unit 12A for storing a large number of medals, and a tray unit 6A. A hopper unit 12 that discharges medals toward the camera, a power supply device 13 that supplies power to these devices, and the like are provided.
Among these, the reel unit 10 has a plurality of rotating reels 11 each formed in a cylindrical shape. A plurality of kinds of symbols are written on the outer peripheral surfaces of the rotary reels 11 although not particularly shown.

The back side surface of the front door 3 controls the operation of the liquid crystal display device 4E, the lighting devices 4B to 4D and the sound output units 4F and 6C corresponding to the liquid crystal display device 4E arranged on the front side surface. A sub-board case 8A that houses the sub-control board 8 is provided.
In addition, a medal selector 14 for determining the suitability of the inserted medal is provided on the back side surface of the front door 3 corresponding to the medal insertion port 7B opened on the front side surface.

(Main board case 40 and main control board 30)
Next, the main board case 40 containing the main control board 30 will be briefly described.
As shown in FIGS. 3 and 4, the main board case 40 is formed in a box shape, and the main control board 30 is accommodated therein.
The main board case 40 is a member made of a transparent synthetic resin that can be visually recognized from the outside, and can be divided into a base part 41 and a lid part 42.

The base portion 41 is to which the main control board 30 is attached, and is fixed to the housing 2 via a fixing member having an appropriate structure.
The lid part 42 covers the main control board 30 attached to the base part 41 and protects the main control board 30. When combined with the base part 41, the lid part 42 is sealed together with the base part 41. A space is formed.

The base portion 41 and the lid portion 42 are coupled to each other by a caulking member 41A and a caulking receiving portion 42A, a screw 43, and a locking piece 41E and a locking hole 42E.
That is, the caulking member 41A is formed in a cylindrical shape and a wedge-shaped locking projection on the outer peripheral surface, although not particularly shown.
The caulking receiving portion 42A is formed as a part of the lid portion 42. The caulking receiving portion 42A is not particularly shown, but is formed in a cylindrical shape capable of fitting the caulking member 41A therein, and a recess for locking the engaging protrusion of the caulking member 41A is formed on the inner peripheral surface. Yes.

In the vicinity of the upper corner of the base portion 41 in FIG. 4, a caulking attachment portion 41B to which a caulking member 41A is fixed is formed.
As shown in FIG. 4, the caulking attachment portion 41B is a box-shaped portion having an open surface facing the lid portion 42 side. As shown in FIG. 5, in addition to the caulking member 41A, a metal cylindrical protection plate 41C that covers the caulking member 41A and protects the caulking member 41A is installed inside the caulking attachment portion 41B. .
The caulking member 41A attached to the inside of the caulking attachment part 41B is fixed to the caulking attachment part 41B when the lid part 42 is coupled to the base part 41, that is, when the main board case 40 is closed, It is impossible to move.

Returning to FIG. 4, the lid portion 42 is provided with a caulking receiving / receiving portion 42 </ b> B in which a caulking receiving portion 42 </ b> A is formed, corresponding to the caulking attachment portion 41 </ b> B on the base portion 41 side, as shown in FIG. 4. ing.
As shown in FIG. 4, the caulking receiving / receiving portion 42 </ b> B is a box-shaped portion having an open surface facing the base portion 41 side. A metal cylindrical protective plate (not shown) that covers the periphery of the crimping receiving part 42A and protects the crimping receiving part 42A is installed inside the crimping receiving part 42B.

  When the caulking member 41A and the caulking receiving portion 42A are fitted to each other inside the base portion 41 and the lid portion 42, thereafter, the caulking member 41A and the caulking receiving portion 42A are placed on either side wall of the caulking attachment portion 41B or the caulking receiving storage portion 42B. The fitting cannot be released unless at least one of the caulking member 41A and the caulking receiving portion 42A is broken by making a hole.

  The screw 43 passes through both a later-described screw insertion hole 42C formed in the lid portion 42 and a later-described screw insertion hole 31 formed in the main control board 30, and passes through a boss 41D erected on the base portion 41 side. Thus, the base portion 41 and the lid portion 42 are coupled to each other. The connection structure of the base portion 41 and the lid portion 42 by the screw 43 will be described in detail later.

A plurality of locking pieces 41E whose tip portions extend downward are provided at the lower edge of the base portion 41 in FIG.
A plurality of locking holes 42E are provided in the side wall portion 42F of the lid portion 42 in the lower part in FIG. 4 corresponding to the locking pieces 41E on the base portion 41 side.
The base portion 41 and the lid portion 42 are configured such that the lower end portions of the base portion 41 and the lid portion 42 are connected to each other by fitting the distal end portion of the locking piece 41E on the base portion 41 side into the locking hole 42E on the lid portion 42 side. It has become.

Returning to FIG. 3, a cover member 60 having an inverted U-shaped cross section is attached to the center portion of the upper edge of the main board case 40 in FIG. 3 in order to sandwich the base portion 41 and the lid portion 42 from both sides. Yes.
Here, a portion of the main substrate case 40 covered with the cover member 60 is provided with a tag attaching surface 44 to which an IC tag seal (not shown) is attached as shown in FIGS.

The tag sticking surface 44 is divided into two parts, a base side surface 44A provided on the base portion 41 side and a lid side surface 44B provided on the lid portion 42 side.
In each of the base side surface 44A and the lid side surface 44B, slits 44C and 44D extending in the vertical direction are formed at intermediate positions in the horizontal direction in FIG.
Further, a gap 44E extending in the left-right direction in FIG. 3 is formed between the base side surface 44A and the lid side surface 44B.

Further, the cover member 60 is provided with a blade insertion hole 60A formed in a circular shape while being opened at a substantially central portion in the vicinity of the lower edge in FIG.
The blade insertion hole 60A is inserted with a breaking member 61 having a head that expands in a circular shade shape in accordance with the blade insertion hole 60A.
When the breaking member 61 is inserted into the blade insertion hole 60A of the cover member 60, the breaking member 61 is integrated with the cover member 60 and moves together with the cover member 60.

In the above, in order to remove the main board case 40 from the main board case 40 after the cover member 60 is mounted in a state where the base part 41 and the lid part 42 are coupled to each other and the IC tag seal is stuck to the tag sticking surface 44. When the member 60 is moved upward in FIG. 3, a blade (not shown) provided on the breaking member 61 divides the IC tag seal to the left and right.
Further, when the main board case 40 is opened with the cover member 60 removed from the main board case 40, the base side surface 44A and the lid side surface 44B are separated and divided into left and right parts, and the IC tag seal is further divided up and down. It is like that.

The main control board 30 is a main board on which a plurality of electronic elements constituting a predetermined circuit are mounted, and an LSI (not shown) that serves as the above-described microcomputer is a main electronic element.
In addition to the above-mentioned LSI, the main control board 30 includes a ROM 32, which is a storage medium storing a control program, and various types of large and small connected to the end of a cable (not shown) for external connection. Connectors (receptacles) 33A to 33C and the like are provided.
Further, on the surface of the main control board 30, a conductive pattern for electrically connecting an electronic circuit attached to the main control board 30, for example, a conductive pattern 34 for electrically connecting the ROM 32, and An auxiliary substrate 50 that covers the entire ROM 32 from above is provided.

The auxiliary substrate 50 is a member made of a transparent synthetic resin film or the like, and as shown in FIGS. 6 to 9, the center portion bulges out from the peripheral portion to form a rounded lid shape. It is formed.
The ROM 32 covered with the auxiliary board 50 is visible from the outside of the auxiliary board 50 because the auxiliary board 50 is transparent, and the main board case 40 is also transparent. Visible.

The planar shape of the auxiliary substrate 50 in FIG. 7 is an oval shape whose dimension in the left-right direction is larger than the dimension in the vertical direction, in other words, an oval shape whose longitudinal direction is the left-right direction.
As shown in FIGS. 7 and 8, the auxiliary substrate 50 is provided with a plurality of auxiliary conductive portions 51 that are coupled to the main control substrate 30 and are part of an electronic circuit formed on the main control substrate 30. .
Each of the plurality of auxiliary conductive portions 51 is a conductive pattern having electrical conductivity, extends in a direction intersecting the longitudinal direction, and is arranged in parallel to each other.
Here, as the auxiliary conductive portion 51, for example, a copper etching pattern, a vapor deposition pattern, a transparent electrode pattern, or the like formed on the surface of the auxiliary substrate 50 can be employed.

Further, on the center line extending in the left-right direction in FIG. 7 in the auxiliary substrate 50, as shown in FIGS. 7 to 9, a plurality of perforated holes 52A penetrating through the auxiliary substrate 50 and formed in a rectangular shape are provided. It is formed so as not to overlap with the conductive portion 51.
By these perforated holes 52A, an easily tearable portion 52 that is easier to tear than other portions is formed on the center line of the auxiliary substrate 50 extending in the left-right direction in FIG.
The easy tearing portion 52 is formed so as to tear before the other portion when an external force is applied to the auxiliary substrate 50. Further, the easy tearing portion 52 is formed across all of the plurality of auxiliary conductive portions 51. As a result, the auxiliary conductive portion 51 is cut at the easy tear portion 52 when the auxiliary substrate 50 is torn at the easy tear portion 52.

Further, the auxiliary board 50 is provided with a coupling portion 53 that is coupled to the main control board 30 side.
The coupling portion 53 is coupled to the main control board 30 while covering the conductive pattern 34 which is a part of the conductive pattern formed on the main control board 30.
Here, the coupling portion 53 is a portion that performs both electrical connection and mechanical joining in the auxiliary substrate 50.
The auxiliary board 50 is used when the auxiliary board 50 or the main control board 30 is attached to the base part 41 or the lid part 42 is attached to the base part 41 in the vicinity of both end portions of the easily tearable part 52. A screw insertion hole 54 through which a screw to be inserted is inserted is formed.

Returning to FIG. 5, the main control board 30 is formed in the vicinity of both side edges along the longitudinal direction of the ROM 32 as shown in FIG. 5, and the longitudinal direction of the ROM 32 so as to cross all the conductive patterns 34. A pair of coupling regions 34A extending along the line A is provided.
The coupling portion 53 on the auxiliary substrate 50 side is formed of ACF (anisotropic conductive film), and is bonded by heating and pressurizing while being pressed against the coupling region 34A on the main control substrate 30 side. It is coupled to the coupling region 34A on the side.
Thus, the coupling portion 53 is a mechanical connector that mechanically joins the auxiliary board 50 to the main control board 30.

Here, when the coupling portion 53 formed of ACF is crimped to the coupling region 34A, it has conductivity in the thickness direction, but does not conduct current in the direction along the surface of the main control board 30. It has electrical insulation.
Thus, the coupling portion 53 also serves as an electrical connector for electrically connecting only the conductive patterns 34 on the main control board 30 side and the opposing conductive portions 51 on the auxiliary board 50 side. Yes.
Further, the conductive pattern 34 of the main control board 30 is a part covered by the coupling portion 53 of the auxiliary board 50 when the auxiliary board 50 is peeled from the main control board 30, that is, a part included in the coupling region 34A. Are peeled off from the main control board 30 together with the coupling portion 53 of the auxiliary board 50.

Next, the coupling structure of the base portion 41 and the lid portion 42 by the screw 43 described above, and the connector 33B disposed in the vicinity of the coupling structure will be described.
Of the base portion 41 and the lid portion 42, the lid portion 42 has a concave upper surface in FIG. 10 corresponding to the boss 41D on the base portion 41 side, as shown in FIG. A recess 42D is formed. On the bottom surface of the recess 42D, a screw recess 42G that is coaxial with the recess 42D and has a smaller diameter than the recess 42D is provided.
The screw insertion hole 42C through which the screw 43 is inserted is formed on the bottom surface of the screw recess 42G.

Here, between the screw insertion holes 31 formed in the main control board 30, as shown in FIG. 11, the connector 33B described above is provided.
The connection pin 33E provided on the connector 33B protrudes from the back surface of the main control board 30, and is further covered and protected by a small auxiliary board 50A similar to the auxiliary board 50 described above.
As shown in FIG. 11, the small auxiliary substrate 50A is formed of the same material as the auxiliary substrate 50 and has the same shape and structure, but is different in size from the auxiliary substrate 50. In other words, the small auxiliary board 50A is obtained by downsizing the auxiliary board 50 in accordance with the arrangement dimension of the connection pins 33E provided on the connector 33B.
The small auxiliary board 50A includes a plurality of auxiliary conductive parts 51 that are part of an electronic circuit formed on the main control board 30, and an easy tear part 52 that is easier to tear than the other parts, like the auxiliary board 50 described above. A coupling portion 53 coupled to the main control board 30 side and a screw insertion hole 54 through which a screw such as the screw 43 is inserted are formed.

Returning to FIG. 10, the screw 43 includes a recess 42D, a screw recess 42G, a screw insertion hole 42C on the bottom surface of the screw recess 42G, a screw insertion hole 54 of the small auxiliary board 50A, and a screw insertion hole 31 of the main control board 30. And is screwed into the boss 41D of the base part 41, thereby connecting the base part 41 and the lid part 42, and the main control board 30 and the small auxiliary board 50A in a predetermined position in the main board case 40. It is fixed.
The screw 43 connecting the base portion 41 and the lid portion 42 is housed in the recess 42D. A caulking cap 42H is fitted in the recess 42D in which the screw 43 is accommodated so that it cannot be removed.

The caulking cap 42H seals the screw 43. Unless the caulking cap 42H is broken and removed from the recess 42D, the screw 43 and the boss 41D cannot be unscrewed, and the main board case 40 cannot be opened.
Thus, when releasing the main board case 40, it is necessary to destroy the lid portion 42 or the caulking cap 42H of the main board case 40 in order to release the screw 43 and the boss 41D from being screwed. When the case 40 is opened, the trace remains.
Since the trace of opening the main board case 40 remains, the unauthorized opening of the main board case 40 can be promptly detected, and after the discovery, by taking predetermined measures, the main board case 40 can be opened. In addition, even if an illegal act is performed on the main control board 30 or the like, the occurrence of damage due to the illegal act can be prevented.

At this time, it is conceivable to connect the unauthorized cable harness to which the unauthorized control board for illegally changing the hopper unit 12 or the like or illegally changing the game setting is connected to the connection pin 33E of the connector 33B.
Then, in order to connect the unauthorized cable harness to the connection pin 33E of the connector 33B, the main board case 40 is opened. At this time, even if there is no trace of the main board case 40 opened, the small auxiliary board 50A Since the connection pin 33E of the connector 33B is covered, an illegal act by the illegal cable harness is prevented.
In other words, to connect the unauthorized cable harness to the connection pin 33E of the connector 33B, it is necessary to break the small auxiliary board 50A or remove the small auxiliary board 50A from the main board case 40, and if the small auxiliary board 50A is broken, While the easily tearable portion 52 is torn and the auxiliary conductive portion 51 is cut, when the small auxiliary substrate 50A is removed from the main substrate case 40, a part of the conductive pattern 34 formed on the main substrate case 40 (see FIG. 11). Is peeled off from the main board case 40, and in any case, the electronic circuit formed in the main board case 40 is destroyed, thereby preventing an illegal act by the illegal cable harness.

(Effect of embodiment)
According to this embodiment as described above, the following effects can be obtained.
That is, the auxiliary substrate 50 and the small auxiliary substrate 50A provided with the auxiliary conductive portion 51 which is a part of the electronic circuit formed on the main control substrate 30 are coupled to the main control substrate 30 and cross the auxiliary conductive portion 51. When the auxiliary board 50 and the small auxiliary board 50A are each provided with an easy tearing portion 52 that is formed and is easier to tear than the other parts, and an external force is applied to the auxiliary board 50 and the small auxiliary board 50A, First, the easy tearing portion 52 was torn, and thus the auxiliary conductive portion 51 was cut off. Therefore, the ROM 32, which is a portion to be protected from unauthorized actions on the main control board 30, was covered with the auxiliary board 50, and the connector 33B In order to remove the auxiliary board 50 and the small auxiliary board 50A from the main control board 30 when performing an illegal act by covering the connection pin 33E with the small auxiliary board 50A, a large force is applied to the auxiliary board 50 and the small auxiliary board 50A. In addition, easy tear 52 Torn, the auxiliary conductive section 51 is cut, the circuit conductive patterns of the main control board 30 is formed is cut off, the electronic circuit formed on the main control board 30 is destroyed inoperative.

  Further, a coupling portion 53 coupled to the main control board 30 in a state of covering at least a part of the conductive pattern 34 formed on the main control board 30 is provided on each of the auxiliary board 50 and the small auxiliary board 50A, and the auxiliary board 50 and When the small auxiliary board 50A is peeled off from the main control board 30, the portion of the conductive pattern 34 of the main control board 30 that is covered by the coupling portion 53 of the auxiliary board 50 and the small auxiliary board 50A is the auxiliary board 50 and the small auxiliary board. Since the main control board 30 is peeled off together with the coupling portion 53 of the board 50A, the two main control boards 30 are illegally obtained. For one main control board 30, the main control board 30 and the auxiliary board 50 are obtained. And the small auxiliary board 50A, by destroying the main control board 30 side, the auxiliary board 50 and the small auxiliary board 50A are removed intact, and for the other main control board 30, the auxiliary board 50 and the small auxiliary board 50A are removed. Destroy 50A Even if the main control board 30 is removed without being damaged, and one of them is used as one by one, if one of the auxiliary board 50 and the small auxiliary board 50A is separated from the main control board 30, it is covered by the coupling portion 53 in the conductive pattern 34. The removed portion is peeled off from the main control board 30 together with the coupling portion 53, and this also blocks the circuit formed by the conductive pattern 34 of the main control board 30 and the electronic circuit formed on the main control board 30 It is destroyed inoperably.

Accordingly, the ROM 32, which is a portion to be protected from fraud on the main control board 30, is covered with the auxiliary board 50, and the connection pins 33E of the connector 33B attached to the main control board 30 are covered with the small auxiliary board 50A. If an illegal act is attempted on these parts, the easy tearing portion 52 of the auxiliary board 50 is torn, the auxiliary conductive part 51 is cut, and the electronic circuit formed on the main control board 30 is inoperably destroyed. The purpose of fraud will not be achieved, thereby preventing fraud.
Further, even if it is attempted to obtain an intact main control board 30 from a plurality of main control boards 30, if one of the auxiliary board 50 and the small auxiliary board 50A is separated from the main control board 30, the conductive pattern 34 of the main control board 30 is changed. Since the circuit to be formed is interrupted and the electronic circuit formed on the main control board 30 is inoperably destroyed, it is not possible to obtain an intact main control board 30, and therefore, illegal acts by one by one. In this way, it is possible to further improve fraud prevention performance.

In addition, this invention is not limited to the said embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included.
For example, the auxiliary substrate is not limited to being bonded only to the main body substrate, but may be disposed across the main body substrate and the substrate case, and may be bonded to both the main body substrate and the substrate case.

For example, as shown in FIG. 12, a connection portion 45 having a connection surface 45A that forms the same surface as the surface of the main control board 30 is provided inside the main board case 40. 30 and the connecting surface 45A of the connecting portion 45 are arranged and coupled.
Then, on the connection surface 45A of the connection portion 45, a conductive coating 46 for electrically connecting a plurality of auxiliary conductive portions 51 provided on the auxiliary substrate 50 appropriately and a lid portion 42 side (not shown) are formed. A caulking hole 47 for fitting the caulking protrusion into the inside is formed.
After the auxiliary board 50 is arranged and coupled across the surface of the main control board 30 and the coupling surface 45A of the coupling part 45, the lid part 42 is coupled to the base part 41 and the lid part 42 side is not shown. The caulking projection is fitted into the caulking hole 47 so that the lid portion 42 and the connecting surface 45A are integrated.
In this way, when the lid portion 42 is separated from the base portion 41 in order to open the main substrate case 40, the easily tearable portion 52 of the auxiliary substrate 50 is torn or the coupling portion 53 removes a part of the conductive pattern 34. The main control board 30 is destroyed because it is peeled off, thereby preventing fraud.

Further, the main board is not limited to the main control board 30 that controls the game operation, but may be the sub control board 8 that controls the production operation, and the board case is limited to the main board case 40 that houses the main control board 30. Instead, a sub-board case 8A for housing the sub-control board 8 may be used.
The present invention can be applied not only to a slot machine but also to a ball game machine such as a pachinko machine. In short, a game provided with a control board on which a control circuit for controlling a device provided in the game machine is formed. Applicable to all machines.

1 Slot machines as gaming machines
30 Main control board as main board
34 Conductive pattern
50, auxiliary board
Small auxiliary board as 50A auxiliary board
51 Auxiliary conductive part
52 Easy tear
53 Joint

Claims (1)

A gaming machine circuit board comprising a main body board on which a plurality of electronic elements constituting a predetermined circuit are attached and a conductive pattern for electrically connecting these electronic circuits is formed,
An auxiliary substrate is provided that is coupled to the main body substrate and is provided with an auxiliary conductive portion that is part of an electronic circuit formed on the main body substrate.
In the auxiliary substrate, an easily tearable portion that is easier to tear than other portions is formed across the auxiliary conductive portion, and at least a part of the conductive pattern formed on the main substrate is covered with the main body. A coupling portion coupled to the substrate is provided;
The easy tearing part is formed so as to tear before the other part when an external force is applied to the auxiliary substrate,
The auxiliary conductive portion is formed to be cut as the easily tearable portion is torn by an external force applied to the auxiliary substrate.
When the auxiliary substrate is peeled off from the main body substrate, the conductive pattern of the main substrate is peeled off from the main body substrate together with the connecting portion of the auxiliary substrate. A circuit board for gaming machines, which is formed as described above.

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