JP5190851B2 - Board case for gaming machines - Google Patents

Description

  The present invention relates to a board case for accommodating a control board used for controlling a gaming machine such as a slot machine, and more particularly, it is difficult to illegally open and take the board case, and even if it is illegally opened. The present invention relates to a board case for a gaming machine that effectively prevents illegal acts such as modification of a control board by making the discovery of the fact easy or reliable.

  In gaming machines such as slot machines and pachinko machines, control related to game play, such as winning lottery and symbol display control, is performed by a control board called a main control board. In recent years, in addition to the main control board, there is a control board that performs substantial control relating to the appearance of balls using a control board called a sub-control board.

  And in such a gaming machine, by replacing the ROM that stores the control program of the main control board or the sub control board with an illegal one, or by giving an illegal signal to the control board from the outside, There is a problem with cheating such as executing different and inappropriate games. Therefore, the control board such as the main control board is accommodated in a board case made of a transparent case base and a case lid that can be seen from the outside, and each case member cannot be easily opened to prevent unauthorized access to the control board. The technology to do is known.

  For example, Patent Document 1 discloses a so-called “caulking” prevention of unauthorized opening, in which a connecting member is inserted into a cylindrical container-like cylindrical opening formed opposite to each other in a case base and a case lid and connected in a non-detachable manner. Means are disclosed.

  The structure of the conventional substrate case disclosed in Patent Document 1 will be described with reference to the perspective view of FIG. 1 and the cross-sectional view of FIG. The substrate case of FIG. 1 accommodates a control substrate 900 of a slot machine, and is mainly composed of a case base 901 and a case lid 902 formed of a transparent resin. The case base 901 and the case lid 902 are connected to each other so that the hinge shaft 903 and the hinge bearing 904 can be opened and closed, and the cylindrical container-like cylindrical openings 905 and 906 that open to face each other. Are formed at four locations on the case base 901 and the case lid 902, respectively. When the control board 900 is accommodated, when the cylindrical connection member 907 is inserted into any pair of the above-described cylindrical openings and the case lid 902 is closed to the case base 901 side, each end of the connection member 907 is provided. The board case is closed so as not to be detached by engaging the sides inside the cylindrical openings 905 and 906.

  In addition, the board case is attached to a pair of left and right bracket members 908 and 909 fixed in the casing of the gaming machine by means of unauthorized detachment prevention described below. That is, a similar cylindrical opening 911 is formed on the right side of the case lid 902 so as to face a plurality of cylindrical container-shaped cylindrical openings 910 arranged in the bracket member 908, and these cylindrical openings 910, 911 are formed. By inserting the connection member 907 having the same shape as described above into any of the above pairs and engaging the inside thereof, the board case is mounted in the casing of the gaming machine so as not to be detached.

  Here, FIG. 2A is a cross-sectional view showing a schematic structure of the unauthorized detachment preventing means in a state where the conventional substrate case (901, 902) is mounted on the bracket member 908, and FIG. It is sectional drawing of the unauthorized detachment | leave prevention means in the state which removed the substrate case from the bracket member.

  Engaging protrusions that are elastically deformable in the inner direction are formed at both ends of the connection member 907, and a cylindrical opening 911 is cantilevered on the case lid 902 via a rod-shaped connecting portion 912. ing. As shown in FIG. 2A, in the state in which the substrate case (901, 902) is mounted on the bracket member 908, the engagement protrusions of the connection members 907 inserted into the respective cylindrical openings 910, 911 and Engagement recesses inside each cylindrical opening engage with each other, and these engagement states cannot be released by an external operation.

  In a gaming machine installed in a game store, in order to check whether the control board 900 has been tampered with or whether its operation is legally compatible, Sampling inspections are conducted from time to time. For this reason, the board case of the gaming machine can take out the accommodated control board 900 by the following method.

  That is, after the connecting portion 912 of the cylindrical opening 911 in the engaged state is separated from the case lid 902 main body with a nipper or the like, the substrate case is removed from the bracket members 908 and 909. Then, the control board 900 can be taken out by opening the board case by separating the cylindrical opening 906 that is also in the engaged state with respect to the taken-out board case from the case lid 902.

  As described above, the substrate case having the conventional structure includes the unauthorized opening prevention means, the unauthorized removal prevention means, and the like, thereby making it difficult to open and remove the board case from the housing, and to open the cylindrical opening 906 on the front side. , 911, the cutting trace of the connecting portion 912 is left as objective evidence of the opening or removing of the substrate case made in the past.

JP 2004-209238 A

  On the other hand, if the substrate case is returned to its original place after being illegally opened or taken and the cut traces of the connecting portions 912 supporting the cylindrical openings 906 and 911 are overlooked during visual inspection, There is a risk that the discovery of this fact will be delayed and the damage spread. The conventional substrate case has not taken any consideration or countermeasure in this regard.

  The present invention has been made in view of such a conventional problem, and it is possible to easily or reliably find traces of unauthorized open or illegally taken in a board case that accommodates a control board of a gaming machine. The purpose is to provide a board case for a gaming machine that suppresses damage as much as possible while restraining actions.

The present invention, control is interposed between the control circuit case cover and the case body which faces the substrate is housed, for a game machine game machine attached to the mounting surface via a bracket member which is fixed to the mounting surface of the In the case of the substrate, the case lid is provided with an opening that is aligned with the shape of the connection member so that the connection member can be inserted, and in which an engagement portion that engages with the inserted connection member is formed. is, opening, together with the cross-sectional surface is cantilevered U-shaped body by Ri those the casing lid to the connecting portion of a recess of the connecting portion of the U-shape toward the bracket member side The connecting portion is a pair of plate-like girders erected in a direction orthogonal to the mounting surface, and is flush with the surface of the case lid, and between the girders. A plate-like thin film portion that is stretched over and that is orthogonal to the mounting surface of the thin film portion The length of each girder portion is shorter than the length in the direction parallel to the mounting surface, and the length of the thin film portion in the direction parallel to the mounting surface is perpendicular to the mounting surface of each girder portion. The girder part can be individually cut by a cutting tool.

According to the board case for the onset Ming gaming machine, the bracket member odor Te holds one end of the connection member which is fixed to the mounting surface of the gaming machine, supported by the connecting portion to the casing cover of the board case by inserting the other end side of the connecting member to the opening being, a substrate case bracket member is mounted irremovably. This makes it difficult to open the substrate case.

Further, when the substrate case is detached from the bracket member, the connecting portion must be cut and the opening portion must be separated from the case lid main body, so that a cut trace of the connecting portion remains as a history of attaching and detaching the substrate case. Here, the connecting portion is configured to have a pair of plate-like girders and a thin plate-like thin film portion bridged between the girders, and the girders mainly have strength against the case lid body. The thin film portion is bridged between the respective girder portions and faces the front surface, so that the opening portion is connected to the case lid body with a relatively wide area when viewed from the front surface. The thin film portion is provided on the same plane as the surface of the case lid, and is disposed so as to be parallel to the vertical plane of the gaming machine. Further, the length in the direction orthogonal to the mounting surface is The length in the direction parallel to the mounting surface is shorter, and the length in the direction parallel to the mounting surface is longer than the length in the direction orthogonal to the mounting surface of each girder. When the connecting portion is cut and the substrate case is detached, the cut state is largely left by the thin film portion having a wide area so that it can be easily seen from the front. Therefore, it is possible to prevent the fact of detachment from the bracket member from being overlooked.

Moreover, since the thin film part of a connection part is thin plate shape, it can be easily stabbed, for example with a cutting tool, and each girder part can be cut | disconnected separately by piercing a thin film part with a cutting tool.

According to the gaming machine substrate case of the present invention, an opening connected to the case lid body, a connection member held by a bracket member fixed to the mounting surface of the gaming machine, and an opening connected to the case lid body. By making the engagement connection, it is impossible to detach and make it difficult to attach and detach the substrate case. In addition, since the connecting portion for supporting the opening portion on the case lid body is formed to have a thin film portion in a wide area facing the front surface, the cutting trace is easily visible and the fact of desorption is overlooked. To prevent. Therefore, even when the substrate case is illegally taken from the mounting surface and returned, the illegal fact can be reliably detected by the cutting trace of the connecting portion shown in the wide area. Thereby, it is possible to prevent unauthorized removal of the substrate case and to suppress damage. Moreover, since each girder part can be cut | disconnected separately, for example by piercing a thin film part with a cutting tool, a connection part can be cut | disconnected with comparatively small force.

It is a disassembled perspective view showing the structure of the substrate case by a prior art example. (A) is sectional drawing showing the structure of the unauthorized removal prevention means in the state which mounted | wore the bracket member with the substrate case by a prior art example, (b) is the unauthorized removal prevention means in the state which removed the substrate case by a conventional example from the bracket member It is sectional drawing showing this structure. It is a front view showing the external appearance of the slot machine by one Embodiment of this invention. FIG. 3 is a front view illustrating a structure inside a housing by opening a front door of the slot machine according to the embodiment of the present invention. It is a perspective view showing the external appearance of the main control board assembly by one Embodiment of this invention. It is a disassembled perspective view showing the structure of the main control board assembly by one Embodiment of this invention. It is the disassembled perspective view which looked at the substrate case by one Embodiment of this invention from back. It is a perspective view which expands and represents a part of case lid by one Embodiment of this invention. It is a perspective view which expands and represents a part of case lid by one Embodiment of this invention, Comprising: It is a figure for demonstrating the effect of the surrounding wall part which has an inclined wall surface. It is a front view of the substrate case by one Embodiment of this invention. It is an external appearance perspective view of the connection member used for the unauthorized opening prevention means by one Embodiment of this invention. It is a front view which expands and represents the connection member holding | maintenance part of the unauthorized opening prevention means by one Embodiment of this invention. It is a longitudinal cross-sectional view of the connection member holding | maintenance part of the unauthorized opening prevention means by one Embodiment of this invention. It is a cross-sectional view of the connection member holding part of the unauthorized opening prevention means according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the unauthorized opening prevention means by one Embodiment of this invention. It is an external appearance perspective view of the connection member used for the unauthorized detachment | leave prevention means by one Embodiment of this invention. It is a cross-sectional view of the unauthorized detachment prevention means according to an embodiment of the present invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings. First, a schematic configuration of a gaming machine including the board case of the present invention will be described by taking a slot machine as an example. Here, FIG. 3 is a front view showing the appearance of the slot machine, and FIG. 4 is a view showing the internal structure of the slot machine with the front door opened.

  First, the external structure of the slot machine SM will be described with reference to FIG. In the slot machine SM, a front door FD forming a so-called front panel is attached so as to be openable and closable with respect to a housing (MB) which is a substantially rectangular box. The front door FD is roughly divided into an upper panel portion UP and a lower panel portion LP designed to enhance the visual effect, and these are integrally formed of hard plastic. In addition, a tray unit TU in which a tray portion for storing medals is formed is provided below the front door FD.

  An upper lamp UL and a side lamp SL incorporating a high-intensity light emitting diode are disposed on the peripheral portion of the upper panel portion UP. In addition, sound emitting units SAL and SAR for production that have built-in speakers and generate sound effects related to games are arranged on the left and right of the upper panel unit UP, respectively. In addition, a liquid crystal display unit FPD as an effect display device that mainly displays an image related to the effect of the game is disposed between the effect sound emitting units SAL and SAR.

  Further, a panel unit PU having a flat panel surface is attached to the upper panel portion UP, and a substantially rectangular transparent display window FW is formed at the center thereof. Each of the reels R1, R2, and R3 viewed through the display window FW has a cylindrical shape and can be independently rotated, and three reels are arranged in the axial direction in the housing. The player can visually check the three symbols in the vertical direction and the three rows in the horizontal direction through the display window FW among the plural types of symbols arranged on the outer peripheral surface of each reel R1, R2, R3.

  Between the upper panel portion UP and the lower panel portion LP, an operation console OPT on which switches for performing a game operation are arranged is integrally formed. The console OPT is provided with a medal insertion part MD having an insertion slot for inserting medals, a bet button BET, a start lever STL, and stop buttons STB1, STB2, and STB3.

  The bet button BET is a button switch for presenting the number of medals to bet on one game of the slot machine. The slot machine SM rotates the reels R1, R2, and R3 all at once when a bet is placed on the game by pressing any one of the bet buttons BET and the start lever STL is tilted. At this time, the slot machine SM performs winning lottery by internal processing. Then, the corresponding reels R1, R2, and R3 are stopped by pressing the stop buttons STB1, STB2, and STB3, respectively. When all the reels are stopped and the combination of symbols displayed on the active line set in the display window FW coincides with the winning combination won by the internal lottery, the winning is determined.

  The lower panel LP is provided with a display panel DP for displaying a picture of an appearing character and the like so that the player can recognize the model type of the slot machine SM. The saucer unit TU arranged below the lower panel portion LP has a medal payout port MEX for discharging medals to the saucer portion at the time of winning, etc., and an effect sound emitting portion SAB that has built-in speakers and produces effect sound effects. Are arranged respectively.

  Next, the internal structure of the slot machine SM will be described with reference to FIG. A main control board assembly MCA for housing a main control board MCB that controls the overall operation of the slot machine SM in a board case 100 is attached to the upper part of the back plate in the housing MB. The main control board MCB is a control circuit board formed on the basis of a microcomputer including MPU, ROM, RAM, etc., and is accommodated in a board case 100 according to the present invention which is a transparent plastic case.

  A reel unit RU including reels R1, R2, and R3 is provided in the center of the housing MB. The reel unit RU has a predetermined height in the housing MB so that when the front door FD is closed on the housing MB side, the reels R1, R2, and R3 face the display window FW formed in the panel unit PU. It is positioned and attached to a fixed frame. Each reel R1, R2, R3 is rotationally driven by a stepping motor connected to the respective central axis. At the top of the reel unit RU, a rotating device board (not shown) for sending a four-phase driving pulse signal to each stepping motor is attached, and the main control board MCB applies a rotating drive (excitation) pulse to the rotating device board. By sending data, the reels are controlled to rotate, brake and stop.

  Below the reel unit RU, medals inserted from the medal insertion unit MD are stored, and a hopper device HPU that discharges medals from the medal discharge port MEX at the time of payout of a prize, and spilling medals overflowing from the hopper device HPU are accommodated. An auxiliary storage unit MST and a main power supply device PWU that distributes power to each device built in the slot machine SM are provided.

  Speakers SPL and SPR are attached to the upper surface of the rear surface of the front door FD so as to face the sound emitting portions SAL and SAR for effects described above. Although not shown in FIG. 4, a liquid crystal display unit FPD is attached between the speakers SPL and SPR, and a sub-control board SCB for controlling and driving the liquid crystal display unit and the like is transparent on the back side of the liquid crystal display unit. It is accommodated and attached to the substrate case. Sub-control board SCB is a display control of effect video by liquid crystal display unit FPD, illumination control using upper lamp UL and side lamp SL, and effect sound effect control using effect sound emission parts SAL, SAR, SAB Etc., mainly control related to the production of the game.

  Below the sub-control board SCB, a panel unit PU having a transparent display window FW for allowing the reels R1, R2, and R3 to be seen on the front surface is attached. Operation of the cold cathode fluorescent lamp CFL, the start lever STL, the stop buttons STB1, STB2, STB3, etc. for irradiating the outer peripheral surfaces of the reels R1, R2, R3 to brightly display the symbols on the back side of the panel unit PU A central display board CDB that functions as a relay board for transferring the output signals of the switches to the main control board MCB is provided and formed as a unit.

  A medal sorting device MSU is attached below the panel unit PU. The medal sorting device MSU is a device that determines and distributes the suitability of medals inserted into the medal insertion unit MD. The medal sensor built in the medal sorting device MSU detects a regular medal inserted in the medal insertion unit MD and sends a detection signal to the main control board MCB.

  Below the medal sorting device MSU, a guide member G1 that guides the regular medal sorted by this to the hopper device HPU, and a medal (or foreign matter) removed by the medal sorting device MSU is guided to the medal discharge port MEX. A guide member G2 is provided. In addition, a guide member G3 that guides medals discharged from the discharge port of the hopper device HPU to the medal discharge port MEX is provided at the lower back of the front door FD. Further, a speaker SPB is mounted adjacent to the medal discharge port MEX so as to face the above-described effect sound emitting unit SAB.

  The slot machine SM configured as described above enters a standby state when a prize is won in the previous game and the payout of medals is completed, or when a loss is confirmed in the previous game. By pressing the bet button BET in this standby state, a medal is bet on the game from the medal (credit) stored inside, and the game starts. When the start lever STL is tilted in the game start state, the main control board MCB rotates the three reels R1, R2, and R3 all at once. At the same time, the winning combination is internally drawn, and the result is stored in a flag (internal lottery flag).

  Next, when the player presses the stop buttons STB1, STB2, STB3 in an arbitrary order, the main control board MCB sequentially stops the corresponding reels accordingly. When it is detected that all the reels R1, R2, and R3 have stopped, it is determined whether or not the symbol displayed on each reel matches the symbol combination related to the winning combination corresponding to the flag. When the symbols related to the winning prize are displayed on the active line and the winning is confirmed, a medal with a predetermined number of dividends is added to the number of credits according to the type of the winning prize, and the number of medals to be credited is determined. When the upper limit value is exceeded, the hopper device HPU is driven to pay out a considerable number of medals to the tray portion of the tray unit TU, thereby paying the player a prize medal.

  Next, a substrate case 100 that accommodates the main control board MCB of the slot machine SM and a main control board assembly MCA using the same will be described. Here, FIG. 5 is a perspective view showing the appearance of the main control board assembly MCA, FIG. 6 is an exploded perspective view showing the structure, and FIG. 7 is an exploded perspective view of the board case 100 as seen from the back.

  Referring to these drawings, the main control board assembly MCA includes a main control board MCB, and a case base 200 and a case lid 300 which are opposed to each other and sandwich the main control board MCB. The substrate case 100 includes a case base 200 and a case lid 300, and the main control board assembly MCA has the case base 200 on the back side and the case lid 300 in front via a pair of left and right bracket members BRa and BRb. It is arranged on the side and attached to the inside of the back plate of the housing MB.

  The first bracket member BRa located on the left side in FIG. 6 includes a flat plate portion 10 that faces and holds the back surface of the substrate case 100, and a side wall portion 11 that stands forward along the left edge of the flat plate portion 10. , And a support base portion 12 erected forward from the lower edge of the flat plate portion 10, and these are integrally formed of hard plastic. The flat plate portion 10 is appropriately formed with a number of bolt holes 10a through which a mounting bolt for mounting and fixing to the back plate of the housing MB (see FIG. 4) of the gaming machine is inserted at a predetermined position. In addition, a fitting recess 306 for stably holding the substrate case 100 by fitting a fitting protrusion 306 (see FIG. 7) formed on the side portion of the case lid 300 of the substrate case 100 inside the side wall portion 11. 11a is formed in two places at the top and bottom.

  The second bracket member BRb located on the right side in FIG. 6 is integrally formed of hard plastic like the first bracket member BRa, and the flat plate portion 20 facing the back surface of the substrate case 100; A side wall portion 21 standing on the right edge of the flat plate portion 20, a step portion 21a formed inside the side wall portion 21, and two columnar support pillar portions 23 that are implanted in the step portion 21a and extend forward. A plurality of (for example, four) cylindrical openings 24 formed at positions close to the side wall portion 21 of the flat plate portion 20, and a hook-like locking projection 25a extending forward from the upper edge of the flat plate portion 20 and inside the tip. And a support base portion 22 erected forward from the lower edge of the flat plate portion 20 so as to face the locking arm 25. The upper surface of the locking arm 25 is a surface that is elastically compressed when it is opened outward, and a rib 25b is formed along the elastic compression direction. Further, the upper surface of the support base portion 22 is formed flat so as to place and support the lower outer edge of the substrate case 100.

  The cylindrical opening 24 of the bracket member BRb constitutes one of illegal detachment preventing means as an engaging means for detachably mounting the substrate case 100, and a cylindrical connection member 500 described later is inserted into the engagement. An engagement recess (24a) for engaging the projections (502, 504) is formed on the inner wall of the cylindrical container. The flat plate portion 20 is formed with bolt holes 20a for attachment similar to the first bracket member BRa at appropriate locations.

  Note that the flat plate portions 10 and 20 of the first and second bracket members BRa and BRb may be integrally formed so as to be flush with each other, and the substrate case 100 may be attached by one bracket member.

  Next, the case base 200 constituting one side of the substrate case 100 has a substantially rectangular box shape whose front side is open and is integrally formed of transparent plastic. Then, the main control board MCB is fixed to the bottom plate 203 on which the ribs are formed via screws (not shown) (see FIG. 6).

  On the lower side wall 204 of the case base 200, hinge bearings 201 are formed at three locations at predetermined intervals for hinge connection with the case lid 300 in a swingable manner (see FIG. 6). More specifically, the lower side wall 204 of the case base 200 is formed to be slightly inwardly shifted from the lower side end of the bottom plate 203, and the arc-shaped hinge bearing 201 that opens downward is lower than the lower side end of the bottom plate 203. Each is formed at a position recessed upward.

  Further, at both ends of the upper side wall of the case base 200, a locking arm 202 having a locking hole 202a at the tip and elastically deformable in the vertical direction is formed.

  Further, on the upper side wall of the case base 200, two connection member holding portions 210 (unauthorized opening prevention means) for holding a square connection member 400 for detachably engaging the case lid 300, and a cylindrical shape are provided. A bottomed cylindrical container-like cylindrical opening 240 into which the connection member 500 is inserted to engage the case lid 300 and a cylindrical container opening 250 for storing the spare connection member 500 are formed. . The case base 200 and the case lid 300 are engaged with each other in a non-detachable manner mainly through a rectangular connecting member 400. However, even if the cylindrical connecting member 500 is inserted into the cylindrical opening 240, the case base is supplementarily provided. The members can be engaged with each other. For example, there is a case where the board case 100 is opened at an amusement store and the operation of the internal main control board MCB is checked and then returned to the manufacturer, etc., but important electronic components such as ROM mounted on the main control board MCB are transported. In order not to be stolen inside, the substrate case 100 is resealed using a spare cylindrical opening 240.

  The case lid 300 constituting the other side of the substrate case 100 has a substantially rectangular box shape whose back side is open, and is integrally formed of a transparent plastic. The lower portion of the case lid 300 has a double-wall structure including an outer wall 302 and an inner wall 307, and a plurality of hinge shafts 301 are aligned with the hinge bearing 201 of the case base 200 at the end of the inner wall 307. It is formed (see FIG. 7). When assembling the substrate case 100, the case cover 300 and the case base 200 can be freely opened and closed by fitting the hinge shaft 301 of the case cover 300 into the hinge bearing 201 of the case base 200 at an angle within a predetermined range. Connected.

  Locking protrusions 303 are formed on both ends of the upper side wall of the case lid 300, respectively. The case lid 300 is closed by swinging to the case base 200 side, the locking arm 202 of the case base 200 is elastically deformed, and the locking hole 202a is locked to the locking projection 303, thereby closing the case members. State is to be maintained.

  In addition, on the upper side wall of the case lid 300, a rectangular tube opening 310 with a bottom that opens in a square shape so that the rectangular tube portion 410 of the connection member 400 can be inserted is formed at two locations via connecting portions 312. Yes (means to prevent unauthorized opening). Although details will be described later, an engagement recess 311 that can be engaged with the engagement protrusion 412 of the square tube portion 410 of the inserted connection member 400 is formed on the inner wall of the square tube opening 310.

  Further, on the upper side wall of the case lid 300, a cylindrical opening 340 for opposingly engaging with the cylindrical opening 240 on the case base 200 side through the connection member 500 and a cylinder on the case base 200 side are also provided. Opposite to the container opening 250, a cylindrical container opening 350 for storing the spare connection member 500 is formed through the coupling parts 342 and 352, respectively.

  When the case lid 300 is closed to the case base 200, the surrounding wall portion 319 including the connection member holding portion 210 and the square tube opening portion 310 together, and the surrounding wall portion 349 surrounding the cylindrical openings 240 and 340, A surrounding wall portion 359 surrounding the cylindrical container openings 250 and 350 is formed on the upper side wall of the case lid 300, respectively.

  Here, the structure of the surrounding wall portion 319 will be described with reference to FIG. 7 and FIG. 8 which is a partially enlarged view of the case lid 300. That is, the surrounding wall portion 319 is formed on the case lid 300 as an outer wall surrounding the outer peripheral edge of the rectangular tube opening 310 with a predetermined gap, and the side facing the connecting member holding portion 210 is an opening. When the case lid 300 is closed to the case base 200, the connection member holding portion 210 is fitted into the square tube opening 310 through this opening, thereby connecting the square tube opening 310 and the connection member holding portion 210 to each other. It includes a form surrounding the unauthorized opening prevention means (engagement means). In addition, one side wall of the surrounding wall portion 319 is an inclined wall surface 320 that gradually increases in thickness from the front side to the back side. The surrounding wall portion 319 having such a structure prevents unauthorized access to the unauthorized opening prevention means from the outside, and makes it difficult to perform unauthorized actions such as destroying the engaged state using a cutter or the like. Further, as shown in FIG. 9, even if a hole is opened by an unauthorized tool D such as a drill from the side of the inclined wall surface 320 and the unauthorized opening prevention means is destroyed, traces such as the drilling are, for example, from the front side. Since the inspector P can easily visually check, it is possible to quickly find such a fraud fact.

  In addition, the surrounding wall part 349 surrounding the cylindrical openings 240 and 340 and the surrounding wall part 359 surrounding the cylindrical container openings 250 and 350 are also formed to prevent unauthorized access to the openings from the outside. .

  Further, when the substrate case 100 is attached to the bracket members BRa and BRb, a cylindrical opening 330 that opens to face the cylindrical opening 24 of the bracket member BRb is formed on the side wall of the case lid 300 via the connecting portion 333, respectively. Yes (means to prevent unauthorized withdrawal).

  The circle in FIG. 8 shows a detailed cross section of the connecting portion 333 that connects the cylindrical opening 330 to the case lid 300 main body. As shown in the same circle, the connecting portion 333 is spanned so as to close the gap between the two parallel bar bodies 333a, and both the girder portions 333a, and has a surface facing the front. A thin plate-like thin film portion 333 b is formed integrally with the case lid 300 main body and the cylindrical opening 330. Further, the connecting portion 333 is also required to support the cylindrical opening 330 in a cantilevered manner by the girder portion 333a, while being able to be cut using a tool such as a nipper. In other words, the connecting portion 333 is designed with a cross-sectional area of the beam portion 333a or the like based on a strength balance that satisfies both of these conflicting requirements. Moreover, the space | interval of the connection part 333 visually recognized from the front is made wider than before, and it makes it easy to see by closing between each beam part 333a with the thin film part 333b. That is, by making it easy to see the cut state of the connecting portion 333 showing the desorption trace of the substrate case 100 from the front, it is possible to easily or reliably detect unauthorized desorption of the substrate case 100.

  Furthermore, for example, the rectangular tube opening 310 shown in FIGS. 7 and 8 is also cantilevered by the case lid 300 main body by connecting portions 312 and 312a having the same structure. Although not shown, the connecting portions 312 and 312a also include a spar portion and a thin film portion. The thin film portion increases the surface area of the connecting portion so that the cut state can be easily seen from the front. Since it has the same effect, it is the idea included in the substantially same technical range.

  A rectangular frame 304 surrounding the cylindrical opening 330 is formed on the side of the case lid 300 on which the cylindrical opening 330 is formed. A locking end 308 for locking the locking arm 25 of the bracket member BRb is formed on the upper end portion of the rectangular frame portion 304. Further, fitting protrusions 306 are formed at two upper and lower portions on the side wall of the case lid 300 on the opposite side where the cylindrical opening 330 is formed. In addition to these, in the case lid 300, connector insertion holes 361, 362, 363 through which connectors mounted on the main control board MCB for electrically connecting other control circuit boards, built-in devices and the like through harnesses are inserted. Are formed at corresponding positions.

  The main control board MCB is equipped with a ROM that stores setting data relating to the appearance of the slot machine SM and a program relating to operation control. In this embodiment, the mounting position of such important electronic components is the board case. It is determined in relation to 100 structures. That is, as is apparent from the front view of the substrate case 100 shown in FIG. 10, the ROM is disposed in a close place where the unauthorized opening prevention means (310, 340) is provided. This is to prevent illegal acts such as forcibly opening the substrate case 100 and stealing the internal ROM. Similarly, an important electronic component such as a ROM is arranged near the cylindrical opening 340 which is a preliminary opening prevention means to prevent the theft of the component during return transportation of the main control board assembly MCA. Yes.

  The board case 100 is assembled by mounting the main control board MCB to the case base 200 with screws and fitting the hinge shaft 301 of the case cover 300 into the hinge bearing 201 of the case base 200 at an angle within a predetermined range. And the case base 200 are connected to be freely opened and closed. When the case lid 300 is closed, as shown in FIG. 5, the locking hole 202a of the locking arm 202 on the case base 200 side and the locking projection 303 on the case lid 300 side are engaged. At this time, since the end portions of the peripheral walls of the case base 200 and the case lid 300 are in close contact with each other, the main control board MCB cannot be illegally accessed from the outside of the case using a wire or the like. .

  Further, simply closing the case lid 300 to the case base 200 only locks the locking arm 202 with the locking projection 303 by its elastic deformation force, and it can be easily opened by releasing these locking states. Is in a state. Accordingly, the connection member 400 is inserted into one or both of the connection members holding portions 210 of the case base 200, and the case base 200 is engaged with and connected to the rectangular tube opening 310 of the case lid 300 via the connection member 400. The main cover board MCB is accommodated in a state in which the case lid 300 is detachably connected and cannot be easily opened.

  The unauthorized opening preventing means as the engaging means for detachably engaging the substrate case members will be described in detail below. Here, FIG. 11 is an external perspective view of the connection member 400 described above, FIG. 12 is an enlarged front view showing the connection member holding part 210 of the case base 200, and FIG. 13 is a longitudinal section of the connection member holding part 210 in FIG. 14 and 14 are cross-sectional views of the connecting member holding portion 210 in FIG.

  First, referring to FIG. 11, the connecting member 400 is connected to a rectangular tube-shaped square tube portion 410 and a bottom portion of the square tube portion 410 and is perpendicular to the axis of the rectangular tube portion 410 (in the drawing, up and down). And a widened portion 420 having a substantially rectangular parallelepiped shape whose longitudinal direction is a direction), and these are integrally formed of hard plastic. The rectangular tube portion 410 is formed of a hollow and rectangular tube body 411, and the upper and lower surfaces of the tube body 411 are defined by U-shaped grooves 413 that leave one side, and projecting upward and downward, respectively. 412 is formed. The engaging convex portion 412 has a taper (a slope that gradually protrudes outward from the end toward the widened portion 420) on the insertion side of the rectangular tube portion 410, and the U-shaped groove 413 defines the cylindrical body 411. Elastic deformation is possible toward the inside.

  The widened portion 420 has a dimension that is wider than the width in the left-right direction of the rectangular tube portion 410, and the longitudinal direction thereof is longer than one side of the rectangular tube portion 410. As shown in FIG. 11, the left and right widened area surfaces on the front surface of the widened portion 420 and sandwiching the rectangular tube portion 410 are referred to as “widened surfaces” 421 here.

  FIG. 12A shows an enlarged view of the connection member holding portion 210 before the connection member 400 is inserted, and FIG. 13A shows a longitudinal section taken along the line Av-Av shown in FIG. FIG. 14A shows a cross section along the line Ah-Ah shown in FIG. Referring to these drawings, the connecting member holding portion 210 includes a pair of guide wall portions 212 facing each other from the upper side wall to the inside of the case (in the vertical direction in FIGS. 12 and 13), and a guide wall. The front end of the portion 212, that is, the end of each guide wall portion 212 on the side facing the case lid (300) (not shown) is bent at a substantially right angle so as to face each other, and has a locking convex portion 211 protruding inward. Is formed.

  The connecting member holding part 210 has dimensions and shapes determined in relation to the connecting member 400 so that the connecting member 400 can be held in a predetermined position and posture. That is, the above-described pair of guide wall portions 212 are parallel to each other at an interval corresponding to the width of the widened portion 420 of the connection member 400, and the locking projections 211 are opened inside the case base 200 and The protruding length of the stop convex portion 211 corresponds to the width of the widened surface 421 of the connection member 400. An insertion port 213 for inserting the connection member 400 into the connection member holding part 210 is formed at the end of the guide wall part 212 inside the case base 200.

  When the case lid 300 is engaged so as not to be detached, the connection member 400 is first inserted into the connection member holding portion 210. Here, FIG. 12B shows a front appearance of the connection member holding portion 210 in a state where the connection member 400 is inserted into a predetermined position where the connection member 400 can be engaged with the rectangular tube opening (310) of the case lid. FIG. 13B shows a longitudinal section along the Bv-Bv line shown in FIG. 12B, and FIG. 14B shows a transverse section along the Bh-Bh line shown in FIG. 12B. As shown in these drawings, in order to insert the connection member 400 into the connection member holding portion 210, each widening portion 420 of the connection member 400 is guided from the inside of the case base 200 along the longitudinal direction thereof. It is inserted between 212 (insertion port 213), and the engaging part 410 is slid to the upper side wall of the case base body 200 in a state where the engaging part 410 protrudes from the gap between the respective locking convex parts 211. At this time, the both side surfaces of the widened portion 420 are sandwiched between the guide wall portions 212 and slidably guided, whereby the connecting member 400 is slid to a predetermined upper position while maintaining its posture (orientation).

  In the state in which the connection member 400 is inserted in a predetermined position in the connection member holding portion 210, the widening surface 421 of the connection member 400 abuts on the locking convex portion 211 protruding inward of the guide wall portion 212. Reference numeral 400 denotes a state in which the movement in the direction in which the case lid 300 is detached is restricted and prevented from coming off.

  Next, the details of the square tube opening 310 on the case lid 300 side, which is another component of the above-described unauthorized opening prevention means, will be described. Here, FIG. 15A is a longitudinal sectional view of the connecting member holding portion 210 of the case base 200 and the rectangular tube opening 310 facing the connecting member holding portion 210, and FIG. 15B is engaged and connected via the connecting member 400. It is a longitudinal cross-sectional view of the connection member holding | maintenance part 210 and the square tube opening part 310 showing a state.

  As described above, the rectangular tube opening 310 is formed in a container shape having a rectangular opening in alignment with the dimensional shape of the rectangular tube portion 410 so that the rectangular tube portion 410 of the connecting member 400 can be inserted and fitted. The case lid 300 is connected to the main body via a connecting portion 312 that can be cut using a tool such as a nipper. In addition, on the inner wall of the square tube opening 310, engagement concave portions 311 that are stepped portions having an enlarged diameter that can be engaged with the engagement convex portions 412 of the square tube portion 410 are formed at two locations, upper and lower. In addition, a surrounding wall portion 319 is extended on the upper side wall of the case lid 300 so as to surround the outer edge of the square tube opening portion 310.

  As shown in FIG. 15B, when the case lid 300 is closed to the case base 200, the rectangular tube portion 410 of the connecting member 400 is inserted into the rectangular tube opening 310 of the case lid 300. The engagement convex portion 412 of the connection member 400 once elastically deforms inward so as to follow the side surface of the rectangular tube portion 410, and when it reaches the engagement concave portion 311, it returns to the original protruding state and enters the engagement concave portion 311. Engage. On the other hand, on the case base 200 side, the widened portion 420 of the connecting member 400 abuts against the locking convex portion 211 of the connecting member holding portion 210 and is prevented from coming off. Thus, since the unauthorized opening prevention means is engaged and connected inside the case base 200 and the case lid 300 via the connection member 400, these board case members can be separated from each other once in the engaged state. become unable.

  According to the unauthorized opening prevention means for connecting the substrate case members to each other, the case lid 300 and the case base 200 are opened unless the connecting portion 312 is cut and the rectangular tube opening 310 is separated from the case lid 300 main body. Can not be. In other words, when the substrate case 100 is opened to check the operation of the main control board MCB, it is intended to cut the connecting portion 312 to separate the square tube opening 310 from the case body. That is, when the state of the connecting portion 312 is viewed, it can be easily confirmed whether or not the substrate case 100 is opened. Furthermore, according to the connecting portion 312a of the embodiment shown in FIG. 9, since the square tube opening 310 is also connected to a part of the surrounding wall portion 319 via the thin film portion, the region that can be viewed from the front side becomes wide. ing. Therefore, a large cut trace of the connecting portion 312a is left, and the fact of opening the substrate case 100 can be easily confirmed.

  In addition, in the unauthorized opening preventing means of the present embodiment, the connecting member 400 is formed by including the rectangular tube-shaped square tube portion 410 and the substantially rectangular parallelepiped widened portion 420 wider than the rectangular tube portion 410, and the case On the base body 200 side, the both ends of the widened portion 420 are locked in a posture in which the longitudinal direction of the widened portion 420 is orthogonal to the upper side wall of the case base 200, so that the connecting member 400 is held so as not to come off. That is, since the connection member holding part 210 is provided with a relatively long locking region from the upper side wall of the case base 200 toward the inside of the case and holds the widened part 420 of the connection member 400, for example, illegally using a drill. Even if the locked state is to be released, the locked state cannot be released unless the case base 200 is completely destroyed.

  Further, by providing the case lid 300 with a surrounding wall portion 319 surrounding the rectangular tube opening 310 and the connecting member holding portion 210, unauthorized access from the outside to the unauthorized opening prevention means can be prevented, and a cutter or a drill can be used. Use it to make it more difficult to cheat such as destroying the engaged state. Even if a hole is opened by a drill or the like from the side of the surrounding wall portion 319 and the unauthorized opening prevention means is destroyed, traces such as perforations left on the inclined wall surface 320 can be easily seen from the front side. You can quickly discover the facts. Furthermore, if the unauthorized opening prevention means is destroyed until this locked state is released, the destruction traces are also enormous, so the fact of such illegal acts can be easily or quickly discovered, and the damage caused by this is minimized. To the limit.

  Next, the unauthorized detachment preventing means for attaching the substrate case 100 to the housing MB so as not to be detached via the bracket members BRa and BRb will be described. Here, FIG. 16 is an external perspective view of the connection member 500 used for the unauthorized detachment preventing means, and FIG. 17 is a structure of the cylindrical opening 24 of the bracket member BRb and the cylindrical opening 330 on the case lid 300 side facing this. FIG.

  Referring to FIG. 16, the connecting member 500 has a hollow cylindrical body 501, and rotation restriction grooves 506 and 507 that are notched grooves having a predetermined width are formed at both ends of the cylindrical body 501. In the vicinity of each end of 501, a pair of engaging convex portions 502 and 504 that are defined by U-shaped grooves 503 and 505 that leave one side and project radially outward are formed.

  The engaging projections 502 and 504 have inclined surfaces that gradually protrude outward from the respective ends of the cylinder 501 toward the center, and are directed toward the inside of the cylinder 501 by the U-shaped grooves 503 and 505. And elastically deformable. Furthermore, the engaging convex portions 502 and 504 have tapered surfaces 502a and 504a in which corner portions in the counterclockwise direction when viewed from the respective end sides are cut out obliquely.

  The rotation restricting grooves 506 and 507 and the engaging projections 502 and 504 formed at both ends of the connecting member 500 are in a positional relationship in which the phase is shifted by about 90 degrees around the cylindrical axis of the cylindrical body 501. is there.

  Next, referring to FIG. 17, the cylindrical opening 24 formed in the flat plate portion 20 of the bracket member BRb has a cylindrical container shape, and one end of the connection member 500 is inserted into the inner wall thereof. At this time, the engagement recess 24a for engaging the engagement projection 504 (or the engagement projection 502) is formed as a stepped portion whose diameter is increased at two opposing positions. Two protrusions 24 b are formed on the bottom inner wall of the cylindrical opening 24.

  The cylindrical opening 330 on the case lid 300 side has a bottomed cylindrical container shape that opens toward the bracket member BRb, and is connected to the main body of the case lid 300 via a connecting portion 333. The connecting part 333 is composed of two girder parts 333a and a thin film part 333b spanning the gap between the girder parts 333a (see the enlarged view of FIG. 8). Engaging recesses 331 are formed at two opposing positions on the inner wall of the cylindrical opening 330, and protrusions 332 are formed at two opposite positions on the bottom inner wall of the cylindrical opening 330.

  The procedure for mounting the substrate case 100 assembled with the main control board MCB in an unremovable manner via the bracket members BRa and BRb is as follows. Here, the bracket members BRa and BRb are fixed in advance by inserting mounting bolts (not shown) through the bolt holes 10a and 20a and fastening them to the housing back plate of the gaming machine.

  First, one end of the connection member 400 is inserted into any cylindrical opening 24 formed in the bracket member BRb. At this time, the engaging convex portion 504 is once elastically deformed to the inside of the cylinder, then returns to the original protruding state, engages with the engaging concave portion 24a, and fits into the cylindrical opening 24. On the other hand, the case main body is moved toward the bracket member while the fitting protrusion 306 (see FIG. 7) formed on the side wall of the case lid 300 is fitted to the fitting recess 11a (see FIG. 6) of the bracket member BRa at an appropriate angle. The support column part 23 is inserted through the support hole 305 of the rectangular frame part 304. At this time, the other end of the connecting member 400 inserted into the cylindrical opening 24 of the bracket member BRb is inserted into the cylindrical opening 330 of the opposing case lid 300, and the engaging convex portion 502 is the cylindrical opening. The engagement recess 331 of 330 is engaged and fitted. Thereby, the substrate case 100 is attached to the bracket member BRb so as not to be detached. The board case 100 may be mounted on the bracket members BRa and BRb after the connection member 500 is first fitted into the cylindrical opening 330 of the case lid 300.

  The main body 100 of the main control board assembly MCA is supported by the flat plate portion 10, the side wall portion 11, the support base portion 12, and the flat plate portion 20 and the step portion 21a of the bracket member BRb, and the bracket member BRb. The locking projection 25a of the locking arm 25 is once elastically deformed outward and locked to the locking end 308 on the upper edge of the case lid 300 so that it is held by each part of the bracket members BRa and BRb. It is mounted stably (see FIG. 5). Further, since the bolt holes 10a and 20a for fixing the bracket members BRa and BRb to the housing are closed by the back surface of the case base 200, the board case 100 together with the bracket members BRa and BRb is used in the gaming machine unless the case base 200 is removed. It is not taken away from the case.

  When the substrate case 100 is removed from the housing for inspection of the main control board MCB, the connecting portion 333 of the cylindrical opening 330 into which the connecting member 500 is inserted is cut to separate the cylindrical opening. The substrate case 100 can be detached from the bracket member BRb.

  For example, when the gaming machine is shipped from the factory, the connection member 500 is inserted into the lowest cylindrical opening among the plurality of cylindrical openings 24 and 330, and the board case 100 is engaged and connected. Then, when inspecting the main control board MCB after installing a gaming machine in a pachinko hall or other gaming store, the connecting portion 333 is cut using a tool such as a nipper and the cylindrical opening 330 is moved to the bracket member BRb side. The substrate case 100 is removed from the housing while remaining.

  After the inspection, in order to return the substrate case 100 to the bracket members BRa and BRb and mount them, the connecting member 500 is inserted into the unused cylindrical openings 24 and 330 and engaged and connected. At this time, the spare connection member 500 stored in the cylindrical container openings 250 and 350 (see FIG. 6) may be used, but the connection member 500 is removed from the used cylindrical opening 330 that has lost its connection function. It may be taken out and reused.

  That is, when the cylindrical opening 330 left on the bracket member BRb side is rotated counterclockwise, the taper surface 502a (or 504a) of the connection member 500 is engaged with the engaging recess 331 (or 24) of the cylindrical opening 330 (or 24). 24a) Since they are brought into contact with the side stepped portion and elastically deformed and drawn in the radial center direction, these engagement states are released. In this state, the separated cylindrical opening 330 can be pulled out from the cylindrical opening 24, and the internal connection member 500 can be taken out.

  Each cylindrical opening 330 of the case lid 300 is provided with an alphabetic identification code in the order of, for example, A, B, C, D from the bottom, and the case lid is adjacent to each cylindrical opening. 300 is engraved on the front surface. When the substrate case 100 is removed and inspected as described above, the identification code of the re-engaged cylindrical opening 330 and the inspection history such as the inspection date, the name of the person inspecting, and the inspection result are pasted on the case lid 300. It is managed by writing on the attached inspection sheet.

  As described above, according to the substrate case 100 of this embodiment provided in a gaming machine such as the slot machine SM, the rectangular tube portion 410 having a rectangular tube shape and the widened portion 420 having a substantially rectangular parallelepiped shape wider than the rectangular tube portion. The unauthorized opening is effectively prevented by provision of an unauthorized opening prevention means for detachably engaging and connecting the case base 200 and the case lid 300 via the connecting member 400 comprising: Even if it is done, the fact can be easily or quickly discovered.

  That is, the connection member holding part 210 provided on the case base 200 provides a relatively long locking region in the inner direction of the case base 200 to lock and hold the widened part 420 of the connection member 400. Even if the widened portion 420 is destroyed by using a drill or the like to illegally release the locked state, the case base 200 must be completely destroyed.

  Further, by providing the case lid 300 with a surrounding wall portion 319 surrounding the rectangular tube opening 310 and the connecting member holding portion 210, unauthorized access from the outside to the unauthorized opening prevention means is prevented, and the unauthorized action is completed. Make it more difficult. And even if a hole is opened by a drill or the like from the side of the surrounding wall portion 319 and the unauthorized opening prevention means is destroyed, traces such as perforations left on the inclined wall surface 320 can be easily visually recognized from the front side. Such fraud facts can be discovered quickly.

  Furthermore, if the unauthorized opening prevention means is destroyed until this locked state is released, the destruction traces are also enormous, so the fact of such illegal acts can be easily or quickly found and the damage caused by the illegal acts is suppressed. be able to.

  Further, according to the unauthorized detachment preventing means for preventing the unauthorized detachment of the substrate case 100 from the bracket members BRa and BRb, the substrate case 100 is separated by the cutting state of the connecting portion 333 that connects the cylindrical opening 330 to the case lid 300. It can be confirmed whether or not it has been detached. In particular, since the connecting portion 333 is composed of two girder portions 333a and a thin film portion 333b having a wide area as viewed from the front, spanned by a gap between the girder portions 333a, the cut state is largely left. It becomes easy to see from the front. Therefore, even if the substrate case 100 is illegally detached from the bracket members BRa and BRb, the fact can be reliably detected. As a result, it is possible to prevent unauthorized removal of the substrate case 100 and suppress damage.

  The board case 100 according to the present invention may contain not only the use of the main control board of the slot machine but also other control circuit boards such as a sub control board that mainly controls the production. Further, the present invention can also be applied to a control circuit board mounted on other game machines that operate by a microcomputer such as a pachinko machine or a ball ball game machine.

SM slot machine MCB main control board MCA main control board assembly BRa, BRb bracket member 10 flat plate part 10a bolt hole 11 side wall part 11a fitting recess 12 support base part 20 flat plate part 20a bolt hole 21 side wall part 21a step part 22 support base part DESCRIPTION OF SYMBOLS 23 Support pillar part 24 Cylindrical opening 24a Engaging recessed part 24b Protruding part 25 Locking arm 25a Locking protrusion 25b Rib 100 Substrate case 200 Case base body 201 Hinge bearing 202 Locking arm 202a Locking hole 203 Bottom plate 204 Lower side wall 210 Connection member Holding part 211 Locking convex part 212 Guide wall part 213 Insertion port 240 Cylindrical opening 250 Cylindrical container opening part 300 Case cover 301 Hinge shaft 302 Outer wall 303 Locking protrusion 304 Rectangular frame part 305 Supporting hole 306 Fitting protrusion 307 Inner wall 308 Engagement Stop end 310 Square tube opening 311 Engaging recess 312 Connecting portion 319 Enclosing wall portion 320 Inclined wall surface 330 Cylindrical opening 331 Engaging recess 332 Protruding portion 333 Connecting portion 333a Girder portion 333b Thin film portion 340 Cylindrical opening portion 342 Connecting portion 349 Enclosing wall portion 350 Cylindrical container opening 352 Connecting portion 359 Enclosing wall portion 361, 362, 363 Connector insertion hole 400 Connection member 410 Square tube portion 411 Tubular body 412 Engaging projection 413 Groove 420 Widening portion 421 Widening surface 500 Connecting member 501 Tubular 502 Engagement Joint convex portion 502a Tapered surface 503 Groove 504 Engaging convex portion 504a Tapered surface 505 Groove 506, 507 Rotation restricting groove 900 Control substrate 901 Case base 902 Case lid 903 Hinge shaft 904 Hinge bearing 905, 906 Cylindrical opening 907 Connection member 908, 909 Brake Preparative members 910 and 911 cylindrical opening 912 connecting part

Claims (1)

Braking is interposed between the control circuit case cover and the case body which faces the substrate is accommodated, there in a game machine for a game machine board case attached to the mounting surface via a bracket member which is fixed to the mounting surface of the And
The case lid is provided with an opening in which an opening is formed in conformity with the shape so that the connection member can be inserted, and an engagement portion is formed to engage with the inserted connection member.
Opening, together with the cross-sectional surface is cantilevered to the body of the U-shaped person the case lid Ri by the connecting portion of the U-shaped recess of the connecting portion of the is directed to said bracket member side And
The connecting portion is a pair of plate-like girders erected in a direction orthogonal to the mounting surface, and is flush with the surface of the case lid, and is spanned between the girders. A plate-shaped thin film portion,
The length of the thin film portion in the direction orthogonal to the mounting surface is shorter than the length of each girder portion in the direction parallel to the mounting surface,
The length in the direction parallel to the mounting surface of the thin film portion is longer than the length in the direction orthogonal to the mounting surface of each girder portion,
A board case for a gaming machine, wherein the girder can be individually cut by a cutting tool.

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