JP5485573B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine such as a pachinko gaming machine that launches a game ball on a game board surface.

  A gaming machine such as a pachinko gaming machine, when game balls launched into the game area of the game board are bounced off by a number of nails, etc., flow down the game area and enter the various winning holes, a predetermined number of prize balls Pay out. In such a gaming machine, an illegal act using a magnet may be performed. That is, by moving the magnet in a state where the magnet is close to the game board surface, the game ball is illegally guided to the winning opening.

  Conventionally, in this type of gaming machine, as one of the techniques for detecting fraud by a magnet, for example, a reed switch type magnetic sensor in which a reed switch is closed when a magnet approaches, a frame member positioned on the front side of the gaming machine The technique of arrange | positioning between these two glass plates is proposed (patent document 1). In this technique, a plurality of reed switch type magnetic sensors are arranged on a flat plate member or a card member, and are inserted between two glass plates.

JP 2005-137877 A

  However, in the case of the above prior art, when the magnetic detection area is enlarged, a flat plate member or a card-like member is arranged in a form covering a part of the game area visually recognized by the player. There is a problem of lowering.

  Further, the glass plate located on the front side of the game area is often hit by the player. Therefore, if the reed switch type magnetic sensor is placed between two glass plates, the impact of the player hitting the glass plate is likely to act on the switch part (movable part) that opens and closes the reed switch type magnetic sensor, causing failure or damage. There is also a problem that it is likely to be a factor of this.

  Furthermore, if a lead-type magnetic sensor is arranged between two glass plates, it is possible for a player who performs fraud to easily check the installation position of the sensor, so that an illegal act that the sensor cannot detect is devised. . Therefore, it is preferable to arrange the sensor for detecting fraud so that it is not visually recognized by the player.

  Accordingly, the present invention has been made for the purpose of solving the above-described problems, and provides a gaming machine that can detect illegal acts by a magnet without deteriorating the visibility of a gaming area. It is to provide.

In order to achieve the above object, the invention according to claim 1 is a gaming machine, comprising a gaming board having a substantially circular gaming area on which a gaming ball is launched, and a front side of the gaming board, wherein the gaming area A frame member having a window portion that can be visually recognized, a transparent plate unit that can be attached to and detached from the window portion, and a ball receiving portion that is provided to project to the front side below the window portion and receives award balls. A coil that is wound a predetermined number of times along the periphery of the upper surface of the portion that protrudes to the front side in the ball receiving portion, the magnet moves toward or away from the transparent plate unit, and the transparent plate JP further comprising a fraud detection means for detecting a fraud on the basis of the induced electromotive force generated in the coil in response to variation of magnetic flux when the magnet in a state in which magnets are close to move vertically to the unit It is set to.

  According to this invention, since the coil is provided in the ball receiving portion projecting to the front side below the window portion of the frame member and the fraud is detected based on the induced electromotive force generated in the coil, the window Visibility of the game area through the part is not lowered, and fraudulent acts by the magnet can be detected well.

  The invention according to claim 2 is the gaming machine according to claim 1, wherein the coil is provided inside the ball receiving portion.

  According to this invention, it can be set as the structure by which the player who performs fraud cannot confirm the installation position of a coil easily.

  The invention according to claim 3 is the gaming machine according to claim 1 or 2, further comprising self-diagnosis means for detecting disconnection of the coil.

  According to this invention, since the self-diagnosis means detects the disconnection of the coil, it is possible to grasp whether or not the gaming machine is in a state where it is possible to detect an illegal act.

  According to the gaming machine according to the present invention, it is possible to satisfactorily detect an illegal act by a magnet without reducing the visibility of the game area.

It is a perspective view which shows the external appearance structure of the game machine which is one Embodiment of this invention. It is a figure which shows the example of 1 structure of the game board provided in a game machine main body. It is the partially cutaway view which looked at the ball receiving part of the gaming machine from the side. It is an expansion perspective view of the state where a part of ball receiving part was notched. It is a figure which shows the state which open | released the frame member from the game machine main body. It is the figure which looked at the gaming machine from the front. It is the figure which looked at the gaming machine from the side. It is a block diagram which shows the control mechanism of a gaming machine. It is a figure which shows the concept of the signal processing when the fraudulent act by a magnet is performed. It is a figure which shows the example of 1 structure of the self-diagnosis circuit which detects the disconnection of a coil.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the embodiments described below, members that are common to each other are denoted by the same reference numerals, and duplicate descriptions thereof are omitted.

  FIG. 1 is a perspective view showing an external configuration of a gaming machine 1 in the present embodiment. A gaming machine 1 according to the present embodiment includes a gaming machine main body 2 fixed to an island facility of a hall (store) and a frame member 3 provided on the front side of the gaming machine main body 2. The frame member 3 has a window portion 5 in which a transparent plate unit 4 for making the gaming board 20 provided in the gaming machine main body 2 visible is fitted at the center thereof. The frame member 3 is pivotally supported by a support portion 2a provided at the left end portion of the gaming machine body 2 so as to be openable and closable around a predetermined vertical axis. Normally, the frame member 3 is locked in a state where it is closed to the gaming machine main body 1, but for example, when a ball clogging or the like occurs in the game board 20, the store clerk unlocks the frame member 3 and opens it to the front side. Can eliminate clogged balls.

  Here, first, an example of the gaming board 20 provided in the gaming machine main body 2 of the gaming machine 1 will be described. FIG. 2 is a front view showing an example of the game board 20. As shown in FIG. 2, the game board 20 has a substantially circular game area 21 surrounded by an outer rail 22 and an inner rail 23. The game ball is launched into the game area 21 from the gap between the outer rail 22 and the inner rail 23 provided on the left side of the game area 21. An image display 25 is provided inside the game area 21 so as to be positioned substantially at the center of the game board 20, and various board lamps and movable accessories for production are provided at the periphery of the image display 25. A center accessory 24 equipped with the above is provided. The image display 25 is composed of a liquid crystal display or the like, and is used to display various effect images for effects, a notification image for the player, and the like. In addition, the game area 21 includes known members such as a number of nails, through gates, windmills, various winning openings, and out openings around the center role 24. Therefore, the game ball launched into the game area 21 rolls while changing the course by many nails and windmills, passes through the through gate, enters the various winning holes, or discharges from the out port. Is done.

  In the case of the illustrated example, below the image display 25, there are a start opening 26 and an electric tulip 27 in which a big hit lottery is performed by entering a game ball, and a big winning opening 28 that opens and closes a predetermined number of times when the big win lottery is won. Is arranged. If many game balls enter the start opening 26 or the electric tulip 27, the chance of winning the jackpot lottery increases. Therefore, the player enters more game balls into the start opening 26 or the electric tulip 27. Try to. Further, when the big prize opening 28 is open, if a lot of game balls enter the big prize opening 28, the number of prize balls that the player acquires increases, so the player opens the big prize opening 28 when the big hit. Tries to enter more game balls. In general, the start opening 26, the electric tulip 27, and the special winning opening 28 are generally provided at positions lower than the center of the game board 20 as shown in FIG. In particular, in recent years, with the increase in the screen size of the image display device 25, the start port 26, the electric tulip 27, and the big prize winning port 28 are increasingly disposed at lower positions in the game area 21. At the bottom of the game area 21, there is provided an out port 29 for discharging game balls that have not won any winning ports.

  In addition, a display 30 for displaying a special symbol corresponding to the jackpot lottery result or displaying the number of held balls entered in the start opening 26 on the lower right side of the game board 20 outside the game area 21. Is provided.

  When the player plays a game, substantially the entire game area 21 of the game board 20 as described above can be visually recognized through the transparent plate unit 4 fitted in the frame member 3. The transparent plate unit 4 has two transparent glass plates (not shown) arranged in parallel at a predetermined interval on the front side of the game board 20.

  Further, as shown in FIG. 1, the frame member 3 has a ball receiving portion 6 formed in a state of projecting to the front side of the gaming machine 1 below the window portion 5. On the upper surface of the ball receiving portion 6, a ball receiving tray 8 formed in a concave shape is provided for receiving a prize ball paid out from the gaming machine 1. For example, the bottom of the ball tray 8 is inclined to the right, and when the game ball is paid out, the ball tray 8 rolls to the right and a game ball launching mechanism provided on the back side of the frame member 3. Led to. Further, on the upper surface of the ball receiving portion 6, there are provided various effect buttons 9 that are operated by the player to enjoy the effects.

  A handle lever 7 that is operated by the player is provided at the lower right portion of the ball receiving portion 6 that is formed in this way. When the player rotates the handle lever 7 in the clockwise direction, the game ball launching mechanism is activated, and the game ball is launched into the game area 21 of the game board 20 at a predetermined time interval with a hitting force according to the operation angle. .

  Further, the frame member 3 includes frame lamps 10 for various effects provided on the upper side and both left and right sides of the window portion 5 and on the lower side of the ball receiving portion 6. Further, the frame member 3 includes a pair of left and right speakers 11 at the top thereof.

  Further, as shown by a broken line in FIG. 1, the gaming machine 1 includes a coil 12 wound a predetermined number of times along the periphery of the upper surface of the portion protruding to the front side in the ball receiving portion 6 provided below the window portion 5. ing. The coil 12 is for detecting fraud by a magnet, and is provided in a form that is not exposed on the surface of the ball receiving portion 6 by being disposed, for example, inside the upper surface cover of the ball receiving portion 6. For this reason, the coil 12 cannot be confirmed from the appearance of the gaming machine 1.

  FIG. 3 is a partially cutaway view of the ball receiver 6 of the gaming machine 1 as viewed from the side. FIG. 4 is an enlarged perspective view of a state in which a part of the ball receiving portion 6 is cut away. As shown in FIGS. 3 and 4, a holding portion 18 for holding the coil 12 is formed inside the ball receiving portion 6 that protrudes to the front side of the gaming machine 1 below the window portion 5. The holding portion 18 is formed in an annular shape inside the upper surface of the ball receiving portion 6. The coil 12 is arranged in a state of being wound a predetermined number of times along a holding portion 18 formed in an annular shape on the ball receiving portion 6. By arranging the coil 12 in the ball receiving portion 6 projecting to the front side in this way, compared to the case where the reed switch type magnetic sensor is arranged in the transparent plate unit 4 as in the prior art, the illegal act by the magnet is detected by the player. It becomes possible to detect at a closer position.

  FIG. 5 is a view showing a state in which the frame member 3 is released from the gaming machine main body 2. As shown in FIG. 5, the cable 19 connected to the coil 12 provided in the ball receiving portion 6 is wired in the vicinity of the rotation axis of the frame member 3 below the window portion 5, and from the frame member 3 to the gaming machine main body. Led to two. In this way, by routing the cable 19 to the hinge side of the frame member 3 and wiring, the wiring from the coil 12 can be installed inconspicuously. Moreover, even when the frame member 3 is opened and closed by such wiring, an excessive stress does not act on the cable 19, and the cable 19 is not disconnected even if the frame member 3 is repeatedly opened and closed. . The cable 19 is wired to the back side of the gaming machine body 2 and connected to a main control board 100 described later.

  6 is a view of the gaming machine 1 according to the present embodiment as viewed from the front, and FIG. 7 is a view of the gaming machine 1 as viewed from the side. In the state shown in FIGS. 6 and 7, the player plays a game while paying attention to the behavior of the game ball launched into the game area 21 through the window 5 of the frame member 3, the display screen of the image display 25, and the like. Do. 6 and 7, the above-described coil 12 is arranged as indicated by a broken line in the figure, for example. That is, as described above, the coil 12 is provided inside the ball receiving portion 6 projecting to the front side below the transparent plate unit 4 and is wound around the upper surface of the ball receiving portion 6 a predetermined number of times. Is provided.

  As shown in FIG. 6, the coil 12 is located in the vicinity of the lower side of the start opening 26, the electric tulip 27, and the special winning opening 28 in the game board 20. Therefore, for example, when a player brings a magnet close to the vicinity of the winning opening in order to guide the game ball to the start opening 26, the electric tulip 27, and the big winning opening 28, the magnetic flux penetrating the coil 12 changes accordingly. As a result, an induced electromotive force is generated in the coil 12 in a direction to cancel the magnetic flux change. The gaming machine 1 is configured to detect an illegal act by a magnet by detecting an induced electromotive force generated in the coil 12.

  As shown in FIG. 7, the coil 12 is provided in a state of projecting to the front side below the window portion 5 of the gaming machine 1, so that an illegal act by a magnet can be detected at a position closer to the player. Therefore, the approach of the magnet to the start opening 26, the electric tulip 27, or the big winning opening 28 in the game area 21 can be detected well.

  Thus, in this embodiment, since the coil 12 is not provided in the transparent plate unit 4, even if a player strikes a transparent glass plate, for example, the impact by it does not act on the coil 12, and the coil 12 Can be prevented. Compared with a conventional reed switch type magnetic sensor or the like, the coil 12 has a simple structure that does not have a movable part such as a switch, and thus has an advantage that the coil 12 is not easily damaged. Therefore, even when the player repeatedly hits the effect button 9 provided on the upper surface of the ball receiving portion 6, the coil 12 can sufficiently withstand the vibrations and impacts associated therewith.

  Next, FIG. 8 is a block diagram showing a control mechanism of the gaming machine 1 and shows various control boards attached to the back side of the gaming machine 1. The gaming machine 1 includes a main control board 100 that controls main operations related to games, and a sub-control board 200 that controls each unit based on signals and commands output from the main control board 100. In the case of this embodiment, the sub control board 200 includes a payout control board 120, an effect control board 130, an image control board 140, a lamp control board 150, and the like.

  The main control board 100 detects whether or not a fraudulent act has been performed by a game control unit 50 that controls operations related to the game, a signal processing circuit 51 that processes an output signal (induced electromotive force) from the coil 12, and a magnet. A fraud detection unit 53 that performs The signal processing circuit 51 is provided with a self-diagnosis circuit 52 that automatically detects disconnection of the coil 12.

  The main control board 100 also includes a start port switch 81 for detecting that a game ball has entered the start port 26, an electric chew solenoid 82 for opening and closing the electric tulip 27, and a fact that the game ball has passed a predetermined through gate. A gate switch 83 for detecting, a normal winning port switch 84 for detecting that a game ball has entered the normal winning port, a big winning port switch 85 for detecting that a game ball has entered the main winning port 28, and a big winning port A special winning opening solenoid 86 for driving the opening / closing 28, a normal symbol display 31, a normal symbol hold indicator 32, a special symbol indicator 33, and a special symbol hold indicator 34 are connected. The normal symbol display 31, the normal symbol hold indicator 32, the special symbol indicator 33, and the special symbol hold indicator 34 are displays included in the indicator 30 provided in the lower right part of the game board 20.

  The game control unit 50 includes a CPU 101, a ROM 102, and a RAM 103. The game control unit 50 sends a winning ball command to the payout control board 120 when each of the start port switch 81, the normal winning port switch 84, and the big winning port switch 85 detects the entry of a game ball. The payout control board 120 includes a CPU 121, a ROM 122, and a RAM 123, and is configured to control a payout motor 124 provided on the back side of the game board 20. When a prize ball command is input from the main control board 100, A predetermined number of balls are paid out in accordance with the winning entrance.

  In addition, the game control unit 50 is configured to perform a big hit lottery or a normal symbol lottery. For example, when the gate switch 83 detects the passage of a game ball, a normal symbol lottery for opening and closing the electric tulip 27 is performed, and if elected, the electric chew solenoid 82 is driven for a predetermined time or a predetermined number of times to open the electric tulip 27. . When a game ball enters the opened electric tulip 27, the ball is detected by the start port switch 81 as in the case of entering the start port 26, for example. When the start port switch 81 detects the entry, the game control unit 50 performs a jackpot lottery, starts displaying a special symbol on the special symbol display 33, and causes an effect according to the lottery result. Therefore, a signal or command is sent to the effect control board 130. Also, when the start port switch 81 detects a ball entry, if the special symbol variation display is in progress, the special symbol variation display accompanying the ball entry is suspended and the number of suspensions is displayed on the special symbol hold indicator 34. . In addition, when the jackpot lottery by the game control unit 50 is won, the game control unit 50 displays a special symbol corresponding to the type of winning after the special symbol variation display, and opens and closes the big prize opening that opens and closes the big prize opening 28. Transition to gaming. And game control part 50 controls each part of sub control board 200 according to the hit classification.

  The effect control board 130 includes a CPU 131, a ROM 132, a RAM 133, and a real time clock (RTC) 134. In addition, the effect control board 130 receives a signal when the effect button 9 is operated. The production control board 130 determines specific production contents during the game based on signals and commands from the main control board 100, and controls each of the image control board 140 and the lamp control board 150. In addition, when the player operates the effect button 9, the effect control board 130 may change the content of the effect accordingly. The real-time clock (RTC) 134 is a clock circuit (timer) that counts the current time in real time regardless of whether the power is turned on.

  The image control board 140 includes a CPU 141, a ROM 142, a RAM 143, and a VRAM 144. The image control board 140 displays a variation of the decorative symbols on the image display 25 based on an instruction from the effect control board 130 and is designated by the effect control board 130. The display image on the image display unit 25 is controlled, for example, by stopping the variable display with the selected pattern. The image control board 140 performs various effects such as a reach effect and a character appearing on the image display 25 based on the designation from the effect control board 130. The VRAM 144 is a memory that writes an image to be displayed on the image display 25. The CPU 141 executes various processes such as a background image display process, a decorative symbol display process, and a character image display process on the VRAM 144, so that a background image, a decorative symbol image, a character image, etc. are displayed on the image display unit 25. Display in a superimposed manner. Further, the image control board 140 generates a sound effect for production from the speaker 11. Further, the image control board 140 can display a warning to the player on the image display 25 based on a command from the main control board 100 when an illegal act by a magnet is detected as will be described later.

  The lamp control board 150 includes a CPU 151, a ROM 152, and a RAM 153, and lights various lamps including the frame lamp 10 and the panel lamp 61 based on instructions from the presentation control board 130, and various movable functions for presentation. The accessory driving unit 62 for driving the object is controlled.

  The signal processing circuit 51 provided on the main control board 100 includes various circuits such as a signal amplifier, a noise removal circuit, an inverting circuit, and an A / D converter, and performs signal processing on the induced electromotive force generated by the coil 12. Is output to the fraud detector 53. However, the signal processing circuit 51 is not necessarily provided on the main control board 100. For example, if the signal processing circuit 51 is provided in the vicinity of the coil 12 of the ball receiving portion 6, the wiring from the coil 12 to the signal processing circuit 51 can be shortened as much as possible, and the noise component input to the signal processing circuit 51. Can be suppressed.

  The fraud detection unit 53 is a processing unit that detects the presence or absence of fraudulent acts by a magnet based on an output signal from the signal processing circuit 51. When the fraud detection unit 53 detects a fraudulent act using a magnet, the fraud detection unit 53 outputs a signal indicating that the fraudulent act is being performed to the game control unit 50.

  FIG. 9 is a diagram illustrating a concept of signal processing when an illegal act using a magnet is performed. When moving the magnet M in the direction F1 approaching the transparent plate unit 4 from the front side of the gaming machine 1 as shown in FIG. 9A, or moving the magnet M in the direction F2 away from the transparent plate unit 4 The magnetic flux passing through the coil 12 provided in the ball receiving portion 6 changes as the magnet M moves. Therefore, the coil 12 outputs the output signal (induced electromotive force) SG1 shown in FIG. 9B as the magnet M moves in the directions F1 and F2. In addition, when the winding direction of the coil 12 is the reverse direction, the sign of the induced electromotive force is opposite to that in FIG. 9B.

  9A, when the magnet M is moved in the direction F3 (upward) in a state where the magnet M is close to the transparent plate unit 4, or the magnet M is moved in the direction F4 (downward). When moving the magnet M, the magnetic flux penetrating the coil 12 provided in the ball receiving portion 6 changes as the magnet M moves. Therefore, also in this case, the coil 12 outputs the output signal (induced electromotive force) SG1 shown in FIG. 9B as the magnet M moves in the directions F3 and F4. In this case as well, when the winding direction of the coil 12 is reverse, the sign of the induced electromotive force is opposite to that in FIG. 9B.

  The signal processing circuit 51 outputs the output signal SG2 by sequentially performing the signal processing in the various circuits described above on the output signal SG1 from the coil 12 as shown in FIG. 9B. The output signal SG2 is a signal corresponding to the induced electromotive force generated by the coil 12, and is output as a digital signal, for example. The fraud detector 53 can detect whether or not the gaming machine 1 is cheating with a magnet by inputting the output signal SG2. The number of turns of the coil 12 can be appropriately set so as to have sufficient sensitivity to the approach and separation of the magnet M with respect to the transparent plate unit 4 or the vertical movement in the state of approaching the transparent plate unit 4.

  In particular, since the coil 12 of the present embodiment is wound around the upper surface of the ball receiving portion 6 projecting to the front side of the gaming machine 1 below the transparent plate unit 4 provided in the window portion 5, When the magnet M is brought closer to the transparent plate unit 4 so as to approach the start opening 26, the electric tulip 27 or the big prize winning opening 28 provided at the lower center of the game area 21 (direction F1 in FIG. 9A), Along with this, the magnetic flux penetrating the coil 12 changes greatly, and a large induced electromotive force is generated in the coil 12. Therefore, it is possible to satisfactorily detect an initial operation of the player who tries to bring the magnet closer to the transparent plate unit 4 in order to perform an illegal act.

  Further, if the magnet M is moved in the vertical direction (direction F3 or direction F4) with respect to the game area 21 while the magnet M is in close proximity to the transparent plate unit 4, the magnetic flux penetrating the coil 12 is changed accordingly. Then, a relatively large induced electromotive force is generated in the coil 12. Therefore, it is possible to satisfactorily detect an operation of moving the magnet M in an attempt to guide the game ball attracted by the player with the magnet M approaching the transparent plate unit 4 to the starting port 26 or the like.

  Further, when the magnet is moved in the left-right direction with respect to the game area 21 in a state where the magnet is in close proximity to the transparent plate unit 4, the magnetic flux passing through the coil 12 changes accordingly, and an induced electromotive force is applied to the coil 12. Occur. The induced electromotive force generated at this time is a small electromotive force as compared with the case where the magnet M moves in the direction F1, F2, F3 or F4 shown in FIG. 9A, but the signal amplification in the signal processing circuit 51 is performed. It is possible to detect fraud by adjusting the rate to an appropriate value in advance.

  As described above, the gaming machine 1 according to the present embodiment can detect the magnet M if it moves in the vicinity of the gaming area 21 by the coil 12, the signal processing circuit 51, and the fraud detection unit 53. In particular, the gaming machine 1 according to the present embodiment has the coil 12 provided in the ball receiving portion 6 that protrudes from the lower side of the game board 20 to the front side, so that the starting opening 26 and the big winning opening 28 in the gaming area 21 are provided. It has a high sensitivity to the movement of the magnet M approaching the region of the lower center. That is, the gaming machine 1 of the present embodiment has a high sensitivity to the magnet M approaching the winning opening such as the start opening 26 and the big winning opening 28 where a person who performs an illegal act is likely to guide the game ball. Can be detected.

  Next, FIG. 10 is a diagram illustrating a configuration example of the self-diagnosis circuit 52. The self-diagnosis circuit 52 is inserted, for example, at a position before the signal processing circuit 51 inputs the output signal SG1 from the coil 12. The self-diagnosis circuit 52 includes a current source 52a connected to one end of the coil 12, a current detection unit 52b connected to the other end of the coil 12, and a disconnection of the coil 12 based on the detection result of the current detection unit 52b. And an abnormality detection unit 52c that detects the disconnection of the coil 12 when the abnormality detection unit 52c detects the disconnection of the coil 12. The current source 52 a generates a weak constant current and causes the constant current to flow to one end of the coil 12. When the coil 12 is not disconnected, the current detector 52b detects a constant current generated by the current source 52a. On the other hand, when the coil 12 is disconnected, the current detector 52b does not detect a constant current generated by the current source 52a. The abnormality detection unit 52c determines the disconnection of the coil 12 based on the current value detected by the current detection unit 52b. For example, when the current detection unit 52 b does not detect any current, the abnormality detection unit 52 c determines that the coil 12 is disconnected and outputs an abnormality signal to the fraud detection unit 53. If the current detection unit 52b detects a current, the abnormality detection unit 52c determines that the coil 12 is not disconnected, and does not output an abnormality signal to the fraud detection unit 53. Such a self-diagnosis circuit 52 can self-diagnose whether the coil 12 is functioning normally. Such a self-diagnosis circuit 52 may always perform a self-diagnosis after the game machine 1 is powered on. Further, after the power is turned on, the self-diagnosis may be repeatedly performed at regular time intervals.

  The fraud detection unit 53 can detect the disconnection of the coil 12 by inputting the abnormality signal output from the abnormality detection unit 52c, and the fraud detection function using the magnet is not operating effectively. Grasp that. Then, when detecting the disconnection of the coil 12, the fraud detection unit 53 outputs a signal indicating that the coil 12 is disconnected to the game control unit 50.

  The game control unit 50 shown in FIG. 8 performs control according to the progress of the game by outputting a signal or a command to the sub-control board 200 as described above. The output of the fraud detector 53 is monitored.

  And when the signal which shows that the fraudulent act is performed from the fraud detection part 53, the game control part 50 performs various processes for a fraud countermeasure at the timing. For example, by outputting a fraud warning command to the effect control board 130, a warning screen is displayed on the image display 25 and a warning sound is generated from the speaker 11. Further, the surrounding lamps are informed by lighting the frame lamp 10 and the like in a predetermined pattern. In addition, the game control unit 50 notifies the hall computer through a communication interface (not shown) that an illegal act using a magnet is being performed. Thereby, on the hall side, it is possible to grasp in real time which of the gaming machines installed in the game machine is being cheated by the magnet.

  When the signal indicating that the coil 12 is disconnected is received from the fraud detector 53, the game control unit 50 executes various processes for dealing with the coil disconnection at that timing. For example, by outputting a predetermined command to the effect control board 130, a screen such as “Please call a clerk” is displayed on the image display 25, or a predetermined sound is generated from the speaker 11. Further, the surrounding lamps are informed by lighting the frame lamp 10 and the like in a predetermined pattern. In addition, the game control unit 50 notifies the hall computer via a communication interface (not shown) that the coil 12 is in a disconnected state. Thereby, on the hall side, it is possible to grasp in real time which gaming machine coil 12 is in a disconnected state among a large number of installed gaming machines. As a result, it is possible to stop the use of the gaming machine in which the coil 12 is disconnected, or to quickly replace the coil 12 or the like.

  As described above, the gaming machine 1 of the present embodiment has the ball receiving portion 6 projecting to the front side below the window portion 5 in the frame member 3, and the coil 12 is disposed in the ball receiving portion 6. An illegal act is detected based on the induced electromotive force generated in the coil 12. Compared to a conventional reed switch type magnetic sensor or the like, the coil 12 has a very simple structure, and is low in cost but resistant to impacts and vibrations, and can perform stable fraud detection.

  Further, since the coil 12 in the present embodiment is arranged in a state of being wound around the upper surface of the ball receiving portion 6, the visibility of the game area 21 is not deteriorated, and the start opening 26 and the big prize are won. It is possible to satisfactorily detect fraudulent acts caused by magnets in the lower center of the game area 21 where a winning opening advantageous to the player such as the mouth 28 is arranged. In addition, as described above, the gaming machine 1 according to the present embodiment can satisfactorily detect the initial operation of the player who is going to perform an illegal act from now on, so that the player can display the warning screen on the image display 25. It is also possible to prevent misconduct in advance, for example, by deterring misconduct.

  Moreover, in this embodiment, the coil 12 can be arrange | positioned so that it cannot be visually recognized from the outside by providing the coil 12 inside the upper surface of the ball receiving part 6. Further, in the present embodiment, since the self-diagnosis circuit 52 that detects the disconnection of the coil 12 is provided, even if the coil 12 is disconnected and an improper act by the magnet cannot be detected, It is possible to detect and deal with it promptly.

  As mentioned above, although one Embodiment regarding this invention was described, this invention is not restricted to the content mentioned above, A various modification is applicable.

  For example, in the above-described embodiment, a gaming machine in which a big hit lottery is performed when a game ball enters the start opening 26 and the big winning opening 28 is opened and closed a predetermined number of times when the big hit lottery is won is exemplified. However, the gaming machine of the present invention is not necessarily limited to such a gaming machine, and various gaming machines other than the above-described gaming machines (for example, gaming machines referred to as wings and the like). Of course, it is applicable.

  Moreover, in the said embodiment, although the structural example in which the ball receiving part 6 was integrally provided with respect to the frame member 3 which has the window part 5 was shown, it is not necessarily restricted to such. For example, the ball receiving portion 6 may be configured separately from the frame member 3, and when a ball clogging or the like occurs in the game board 20, only the frame member 3 above the ball receiving portion 6 may be opened to the front side. Even in this case, since the ball receiving portion 6 is provided in a state of projecting to the front side below the window portion 5, by arranging the coil 12 by winding it around the upper surface, fraud due to the magnet can be prevented. It is possible to detect.

DESCRIPTION OF SYMBOLS 1 Game machine 2 Game machine main body 3 Frame member 4 Transparent board unit 5 Window part 6 Ball receiving part 12 Coil 20 Game board 21 Game area 51 Signal processing circuit 52 Self-diagnosis circuit (self-diagnosis means)
53 Fraud detection unit (fraud detection means)

Claims (3)

A game board having a substantially circular game area in which game balls are launched;
A frame member disposed on the front side of the game board and having a window portion through which the game area can be visually recognized;
A transparent plate unit detachable from the window,
A ball receiving portion provided on the front side below the window portion and receiving a prize ball;
A coil wound a predetermined number of times along the periphery of the upper surface of the portion protruding to the front side in the ball receiving portion;
Generated by the coil in response to a change in magnetic flux when the magnet moves in a direction toward or away from the transparent plate unit and when the magnet moves in the vertical direction with the magnet approaching the transparent plate unit Fraud detection means for detecting fraud based on the induced electromotive force
A gaming machine comprising:   The gaming machine according to claim 1, wherein the coil is provided inside the ball receiving portion.   The gaming machine according to claim 1, further comprising self-diagnosis means for detecting disconnection of the coil.

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