JP2010240274A - Game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To continue detection of an unfair act even when troubles or breakage or the like occurs in a sensor which detects a magnet, and to detect the unfair act due to the magnet approximately in all the areas of a game area, without reducing visibility of the game area. <P>SOLUTION: The game machine 1 includes: a game board 20 which has the game area 21 where a game ball is shot; a frame member 3 which is arranged on the front side of the game board 20 and has a window portion 5 from which the game area 21 is visibly recognized; a transparent plate unit 4 which is attachable/detachable to/from the window portion 5; a first coil 12a which generates a first induced electromotive force accompanying movement of the magnet near the transparent plate unit 4; a second coin 12b which generates a second induced electromotive force following movement of the magnet near the transparent plate unit 4; and an injustice detection portion 53 which detects the unfair act based on at least one of the first and second induced electromotive force. <P>COPYRIGHT: (C)2011,JPO&INPIT

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. In particular, if the entire game area is to be a magnetic detection area, it is necessary to dispose a flat plate member of approximately the same size as the glass plate between the two glass plates, which significantly reduces the visibility of the game area. Become.

  Further, the glass plate located on the front side of the game area is often hit by the player. The frame member holding the glass plate is opened and closed many times by the store clerk. Therefore, if the reed switch type magnetic sensor is placed between the two glass plates, the impact caused by the player hitting the glass plate or the impact caused by the opening / closing operation of the frame member by the store clerk can easily act on the reed switch type magnetic sensor. Or cause damage.

  Especially in this type of gaming machine, if the sensor for detecting the magnet breaks down, it will not be possible to detect fraudulent acts by the player, which may cause great damage to the hall (store). is there. Therefore, a sensor for detecting fraud is required to take all possible countermeasures against failure and damage.

  Therefore, the present invention has been made for the purpose of solving the above-mentioned problems, so that it is possible to continue to detect fraud even if a failure or breakage occurs in the sensor that detects the magnet, Furthermore, it is an object of the present invention to provide a gaming machine that can detect an illegal act by a magnet in almost the entire gaming area without lowering the visibility of the gaming area.

  In order to achieve the above object, an invention according to claim 1 is a game board having a game area where a game ball is launched, and a frame having a window portion disposed on the front side of the game board and allowing the game area to be visually recognized. A member, a transparent plate unit that can be attached to and detached from the window, a first coil that generates a first induced electromotive force as the magnet moves in the vicinity of the transparent plate unit, and the vicinity of the transparent plate unit And a second coil for generating a second induced electromotive force in accordance with the movement of the magnet, and a fraud detection means for detecting fraud based on at least one of the first and second induced electromotive forces. It is characterized by that.

  According to such a configuration, even if one of the first coil and the second coil is damaged or damaged, the magnet is used based on the induced electromotive force generated in the other coil. It becomes possible to continue detecting fraud.

  The invention according to claim 2 is the gaming machine according to claim 1, wherein each of the first and second coils is provided in the transparent plate unit and is wound around the periphery of the game area. It is characterized by being.

  According to this configuration, the first and second coils that generate an induced electromotive force with the movement of the magnet can be arranged without reducing the visibility of the game area, and the magnet can be disposed over substantially the entire game area. It becomes possible to detect fraud by

  According to a third aspect of the present invention, in the gaming machine according to the first aspect of the present invention, the gaming machine further includes a ball receiving portion that projects from the front side below the window portion and receives award balls. The coil is provided in the transparent plate unit and is arranged in a state of being wound a predetermined number of times along the periphery of the game area, and the second coil is around the upper surface of the portion protruding to the front side in the ball receiving portion Are arranged in a state of being wound a predetermined number of times.

  According to such a configuration, it is possible to arrange the first and second coils without reducing the visibility of the game area, and it is possible to detect fraudulent acts caused by magnets in almost the entire game area. In addition, since the possibility of the first and second coils failing at the same time is extremely low, even if a failure or breakage occurs in one coil, a magnet is generated based on the induced electromotive force generated in the other coil. It becomes possible to continue to detect fraudulent acts by Ryoko.

  The invention according to claim 4 is the gaming machine according to any one of claims 1 to 3, further comprising self-diagnosis means for detecting disconnection of the first and second coils.

  According to such a configuration, since the self-diagnosis means detects the disconnection of the first and second coils, it is possible to grasp whether or not the gaming machine is in a state where it is possible to detect an illegal act by the magnet. In the unlikely event that all of the first and second coils are disconnected, measures corresponding thereto can be quickly performed.

  According to the gaming machine according to the present invention, the first coil and the second coil are provided as the sensors for detecting the magnet, so that any one of the coils is broken or damaged. Even so, the other coil can continue to detect fraud. Furthermore, it becomes possible to detect fraudulent acts by magnets in almost the entire game area without lowering the visibility of the game area.

It is a perspective view which shows the external appearance structure of the game machine in 1st Embodiment. It is a figure which shows an example of the game board provided in a game machine main body. It is a figure which shows the state which open | released the frame member of the gaming machine. It is a figure which shows the state which removed the transparent plate unit from the frame member. It is a perspective view in the state where a part of transparent plate unit was cut in order to explain the detailed composition of a transparent plate unit in a 1st embodiment. It is a partial expanded sectional view which shows the example of arrangement | positioning of the coil in 1st Embodiment. It is a figure which expands and shows the part of the connector in a transparent plate unit. It is a figure which shows the form by which the connector of a coil is connected by mounting | wearing a frame member with a transparent plate unit. It is the figure which looked at the gaming machine of the first embodiment from the front. 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 in 1st Embodiment. It is a figure which shows the example of 1 structure of the self-diagnosis circuit which detects the disconnection of a coil. It is a perspective view which shows the external appearance structure of the game machine in 2nd Embodiment. It is a perspective view which shows the state which cut | disconnected a part of transparent plate unit in order to demonstrate the detailed structure of the transparent plate unit in 2nd Embodiment. It is a partial expanded sectional view which shows the example of arrangement | positioning of the coil to the transparent plate unit in 2nd Embodiment. 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 the figure which looked at the gaming machine in 2nd Embodiment from the front. It is the figure which looked at the game machine in 2nd Embodiment from the side. It is a figure which shows the concept of the signal processing when the fraudulent act by a magnet is performed in 2nd Embodiment.

  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.

(First embodiment)
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 is pivotally supported by a support portion 2a, 2a provided at the left end portion of the gaming machine main body 2 so as to be openable and closable around a predetermined vertical axis. In addition, the frame member 3 has a window portion 5 in which a transparent plate unit 4 for enabling visual recognition of the game board 20 provided in the gaming machine main body 2 is fitted at the center thereof.

  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 approximately at the center of the game board 20, and various board lamps and movable accessories for performance are provided around 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 displays 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, a through gate 29 is provided on the left side of the image display 25 to draw a normal symbol as the game ball passes. Below the image display 25, there are arranged a start opening 26 and an electric tulip 27 in which a big hit lottery is performed when a game ball enters, and a big winning opening 28 that opens and closes a predetermined number of times when the big win lottery is won. . Further, at the bottom of the game area 21, an out port 21a is provided for discharging game balls that have not entered any of the winning ports to the back side of the game board 20.

  In addition, on the outer right side of the game board 20 outside the game area 21, for example, a display 30 constituted by a plurality of LED light emitting elements is provided. The display 30 includes, for example, a normal symbol display 31 for displaying a normal symbol lottery result, a normal symbol hold indicator 32 for displaying the number of normal symbol lotteries held, and a special symbol corresponding to the result of the jackpot lottery. It has a special symbol display 33 for displaying, and a special symbol hold indicator 34 for displaying the number of lottery lotteries held. That is, the display 30 is for displaying the result of the normal symbol lottery and the result of the jackpot lottery as the game progresses. Such a display 30 is smaller than the image display 25, and the display is performed in a manner that is difficult for the player to grasp. Therefore, the player usually plays a game while visually recognizing the decorative symbols displayed on the image display 25.

  The game board 20 as described above is visible to the player through the transparent plate unit 4, and in particular, substantially the entire game area 21 on the game board 20 can be visually recognized.

  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. Furthermore, the frame member 3 includes a pair of left and right speakers 11 at the top thereof, and generates sound for various effects.

  FIG. 3 is a view showing a state in which the frame member 3 of the gaming machine 1 is opened. When the player plays a game, the frame member 3 is closed and locked by the gaming machine main body 2 as shown in FIG. 1, whereas a ball jam or the like occurs in the game area 21 during the game. Then, the store clerk unlocks the frame member 3 and opens the frame member 3 as shown in FIG.

  As shown in FIG. 3, the frame member 3 is provided with locking members 13 for fixing the transparent plate unit 4 at a plurality of peripheral edge portions of the window portion 5. The engaging members 13 are engaged with the peripheral edge of the transparent plate unit 4 fitted in the window portion 5 from the back side of the frame member 3, so that the transparent plate unit 4 is pressed against the frame member 3. Fix it. Therefore, when the transparent plate unit 4 is fixed in a state where it is fitted in the window portion 5, the peripheral edge portion of the transparent plate unit 4 and the frame member 3 are in close contact with each other, and it is assumed that the player strikes the transparent plate unit 4. There is no rattling. Even if the opening / closing operation of the frame member 3 is repeatedly performed, the transparent plate unit 4 does not fall off the frame member 3. As will be described later, the transparent plate unit 4 is provided with a coil 12 for detecting fraud caused by a magnet. The coil 12 is electrically connected to the frame member 3 at the lower right portion of the transparent plate unit 4. For this purpose, a connector 14 is provided.

  FIG. 4 is a diagram illustrating a state where the transparent plate unit 4 is detached from the frame member 3. When removing the transparent plate unit 4 attached to the window 5, for example, as shown in FIG. 4, each of the plurality of locking members 13 is rotated in the R direction so that the locking member 13 and the transparent plate unit 4 Release the engaged state. Then, the transparent plate unit 4 can be removed on the back side of the frame member 3. On the contrary, when the transparent plate unit 4 is attached to the frame member 3, the transparent plate unit 4 is fitted into the window portion 5 from the back side of the frame member 3, and each locking member 13 is opposite to the R direction shown in FIG. The transparent plate unit 4 can be fixed to the frame member 3 by rotating in the direction and engaging the locking member 13 with the transparent plate unit 4. Each locking member 13 may be provided with a biasing means such as a spring so as to press and bias the transparent plate unit 4 against the frame member 3.

  A connector 15 that is a pair of connectors 14 is provided on the lower right side of the back side of the frame member 3. For example, one of the connectors 14 and 15 may be a female connector and the other may be a male connector. When the transparent plate unit 4 is attached to the frame member 3, the connector 14 of the transparent plate unit 4 is connected to the connector 15 provided at the lower right side on the back side of the frame member 3. explain in detail.

  As shown in FIG. 4, the transparent plate unit 4 includes a transparent plate 40 made of a transparent glass plate and the like, and a holding portion 43 provided along the peripheral edge of the transparent plate 40. The holding portion 43 holds the transparent plate 40, and a flange portion 44 that engages with the locking member 13 of the frame member 3 is provided at a predetermined position on the upper and left sides of the holding plate 43. A connector 14 is provided.

  FIG. 5 is a perspective view showing a state in which a part of the transparent plate unit 4 is cut in order to explain the detailed configuration. As shown in FIG. 5, the transparent plate unit 4 includes two transparent plates 41 and 42 as the transparent plate 40, and these transparent plates 41 and 42 are parallel to each other by a holding portion 43 with a predetermined interval therebetween. Is retained. Among these, the 1st transparent plate 41 is a transparent plate located in the player side during a game. The second transparent plate 42 is a transparent plate located on the game board 20 side during the game.

  Further, as indicated by broken lines in FIG. 5, the transparent plate unit 4 is provided with two coils 12 a and 12 b as the coil 12 described above. These coils 12 a and 12 b are provided between the first transparent plate 41 and the second transparent plate 42, respectively, and are arranged in a state of being wound a predetermined number of times along a holding portion 43 that holds the transparent plate 40. These coils 12a and 12b each independently detect magnetism in the vicinity of the front of the game board 20. That is, in this embodiment, two coils 12a and 12b are provided as sensors for detecting magnetism on the front side of the game board 20. The coils 12a and 12b are less expensive than conventional reed switch type magnetic sensors and have no movable part (open / close type switch) unlike the reed switch type magnetic sensor. Even when an impact or the like is applied, there is a characteristic that the possibility of breakage is lower than in the past.

  FIG. 6 is a partially enlarged cross-sectional view showing an arrangement example of the coils 12 a and 12 b in the transparent plate unit 4. The holding portion 43 that holds the peripheral portions of the first transparent plate 41 and the second transparent plate 42 holds the gap between the first transparent plate 41 and the second transparent plate 42 at a predetermined interval. It has a spacer portion 43 a located between the second transparent plates 42.

  In the arrangement example of FIG. 6A, the groove 45 a is formed on the surface facing the second transparent plate 42 in the spacer 43 a of the holding portion 43, and the groove 45 b is formed on the surface facing the first transparent plate 41. Is formed. Of the plurality of coils 12a and 12b, the first coil 12a is disposed in the recessed groove 45a, and the second coil 12b is disposed in the recessed groove 45b. Since each of these concave grooves 45a and 45b is an annular groove formed along the periphery of the transparent plates 41 and 42, the transparent plate 41 is wound by winding the coils 12a and 12b along the concave grooves 45a and 45b. , 42 can be accommodated inside the coils 12a, 12b.

  Further, as shown in FIG. 6A, the concave plate 45a is provided on the surface of the spacer portion 43a facing the second transparent plate 42, and the coil 12a is arranged in the concave channel 45a, whereby the transparent plate unit 4 is framed. In the game state (the state shown in FIG. 1) attached to the member 3, it can be arranged so that the player cannot visually recognize the coil 12a. However, in the example of FIG. 6A, the coil 12b disposed in the concave groove 45b is disposed on the player side.

  In the arrangement example shown in FIG. 6A, the coils 12a and 12b are provided between the first transparent plate 41 and the second transparent plate 42, so that they are protected by the transparent plates 41 and 42. Therefore, for example, it is possible to prevent the coils 12a and 12b from being cut by a malicious player or the like.

  On the other hand, in the arrangement example of FIG. 6B, a concave groove 45a is formed on the surface of the spacer portion 43a of the holding portion 43 facing the second transparent plate 42, and the first of the plurality of coils 12a and 12b. The coil 12a is disposed in the concave groove 45a. The second coil 12 b is disposed along the tip of the spacer portion 43 a of the holding portion 43. Since the holding portion 43 is an annular member that holds the peripheral portions of the transparent plates 41 and 42, the coil 12 b is wound along the tip portion of the spacer portion 43 a, so that the substantially entire region of the transparent plates 41 and 42 is coiled. 12b can be stored inside. And the coil 12b can be arrange | positioned, without reducing the visibility of the game area | region 21 by fixing the coil 12b to the front-end | tip part of the spacer part 43a with an adhesive agent. Also in the arrangement example shown in FIG. 6B, the coils 12a and 12b are provided between the first transparent plate 41 and the second transparent plate 42, and are thus protected by the transparent plates 41 and 42. Therefore, for example, it is possible to prevent the coils 12a and 12b from being cut by a malicious player or the like.

  Next, FIG. 7 is an enlarged view showing the connector 14 in the transparent plate unit 4. When viewed from the side corresponding to the front side of the gaming machine 1, the connector 14 includes electrodes 17 that are individually connected to the coils 12 a and 12 b as shown in FIG. For example, the electrode 17 includes an electrode 17a composed of two terminals connected to the coil 12a and an electrode 17b composed of two terminals connected to the coil 12b. FIG.7 (b) is sectional drawing at the time of cut | disconnecting by the AA line in Fig.7 (a). In the present embodiment, for example, as shown in FIG. 7B, the holding portion 43 and the connector 14 are integrally formed. The coils 12 a and 12 b provided on the spacer portion 43 a of the holding portion 43 are individually connected to the electrodes 17 provided on the inner side of the connector 14 by conducting wires 19 wired inside the holding portion 43. Therefore, the conductive wire 19 that connects the coils 12a and 12b and the electrode 17 in the connector 14 can be prevented from being intentionally cut. 7B shows the attachment mode of the coil shown in FIG. 6A, the present invention is not limited to this, and the attachment mode shown in FIG. 6B may be used.

  The connector 14 as described above is provided at a predetermined position of the holding portion 43 so as to correspond to the position of the connector 15 provided on the back side of the frame member 3, and as shown in FIG. Is fitted into the window portion 5 from the back side of the frame member 3, so that the connector 14 of the transparent plate unit 4 can be attached to the connector 15 of the frame member 3. The electrode 17 provided and the electrode provided on the connector 15 are in contact with each other, and each of the coils 12a and 12b is electrically connected to the signal line 59 provided on the frame member 3.

  As shown in FIG. 3, the signal line 59 is wired near the rotation shaft of the frame member 3 below the window portion 5 and guided from the frame member 3 to the gaming machine main body 2. Thus, by routing the signal line 59 to the hinge side of the frame member 3, the wiring from the coils 12a and 12b can be installed inconspicuously. Further, with such wiring, even when the frame member 3 is opened and closed, an excessive stress is not applied to the signal line 59, and the signal line 59 is disconnected even when the frame member 3 is repeatedly opened and closed. There is no. The signal line 59 is wired to the back side of the gaming machine main body 2 and connected to a main control board 100 described later.

  As described above, in this embodiment, when the transparent plate unit 4 is attached to the frame member 3, the connectors 14 and 15 are connected to each other, and the coils 12a and 12b are electrically connected to the gaming machine 1. Therefore, there is no need to perform a separate operation for connecting the connectors 14 and 15 separately. Therefore, there is an advantage that the coils 12a and 12b provided on the transparent plate unit 4 can be reliably connected to the gaming machine 1, and the mounting operation and replacement operation of the transparent plate unit 4 can be performed efficiently. .

  When the transparent plate unit 4 is attached to the frame member 3 as described above, a player who is playing the game cannot directly touch the coil 12. Further, for example, even when a ball jam occurs during the game and the store clerk opens the frame member 3, it is possible to prevent the player from touching the coil 12 directly.

  FIG. 9 is a view of the gaming machine 1 according to the present embodiment as viewed from the front. In the state shown in FIG. 9, the player plays the game while paying attention to the behavior of the game ball launched into the game area 21 through the window portion 5 of the frame member 3 and the display of the decorative symbols on the image display 25. . In FIG. 9, the two coils 12a and 12b described above are arranged as indicated by broken lines in the drawing, for example. That is, the two coils 12a and 12b are wound a predetermined number of times along the periphery of the game area 21, and almost the entire game area 21 is accommodated inside the two coils 12a and 12b. Therefore, when the player brings the magnet close to the transparent plate unit 4, the magnetic flux penetrating each of the coils 12 a and 12 b is changed by whatever part of the game area 21. As a result, an induced electromotive force is generated in each coil 12a, 12b in a direction that cancels the change in magnetic flux. And the game machine 1 is comprised so that the fraudulent act by a magnet may be detected by detecting the induced electromotive force which generate | occur | produces in each coil 12a, 12b.

  FIG. 10 is a block diagram showing the 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 includes a game control unit 50 that controls operations relating to the game, a signal processing circuit 51 that processes output signals (inductive electromotive force) from the coils 12a and 12b, and whether or not an illegal act has been performed. And a fraud detector 53 for detecting the above. The signal processing circuit 51 is provided with a self-diagnosis circuit 52 that automatically detects disconnection of the coils 12a and 12b. As will be described later, the signal processing circuit 51 includes signal processing circuits 51a and 51b individually provided for the coils 12a and 12b, and the self-diagnosis circuit 52 also includes the coils 12a and 12b. Are provided with self-diagnosis circuits 52a and 52b provided individually.

  Further, on the main control board 100, 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 that the game ball has passed the predetermined through gate 29. A gate switch 83 for detecting a game ball, 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 big winning port 28, and a grand prize A big winning opening solenoid 86 for opening and closing the mouth 28, a normal symbol display 31, a normal symbol hold indicator 32, a special symbol display 33 and a special symbol hold indicator 34 are connected.

  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. . When the start switch 81 detects entry, the game control unit 50 performs a lottery lottery, starts a special symbol variation display on the special symbol display 33, and performs an effect according to the lottery result. In order to do so, 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. . Also, when the jackpot lottery by the game control unit 50 is won, the game control unit 50 displays a special symbol corresponding to the hit type after the change display of the special symbol, and starts opening / closing driving of the big winning opening solenoid 86. At the same time, by controlling each part of the sub-control board 200 according to the hit type, the gaming machine 1 is shifted to the special gaming state.

  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 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 effect content 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 background image display processing, decorative design display processing, and character image display processing on the VRAM 144, so that a background image, decorative design image, character image, etc. are displayed on the image display 25. It can be displayed in a superimposed manner. Further, the image control board 140 generates a sound effect for production from the speaker 11.

  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 87 based on instructions from the presentation control board 130, and various movable functions for presentation. The accessory driving unit 88 for driving the object is controlled.

  The signal processing circuit 51 provided on the main control board 100 is a circuit including various processing units such as a signal amplifier, a noise removal circuit, an inverting circuit, and an A / D converter, and each of the coils 12a and 12b includes The generated induced electromotive force is signal-processed and 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 frame member 3 is provided in the vicinity of the coils 12 a and 12 b, the wiring for connecting the coils 12 a and 12 b to the signal processing circuit 51 can be shortened as much as possible, and noise components input to the signal processing circuit 51 can be reduced. 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. 11 is a diagram illustrating a concept of signal processing when an illegal act using a magnet is performed. When moving the magnet M from the front side of the gaming machine 1 in the direction F1 approaching the transparent plate unit 4 and moving the magnet M in the direction F2 away from the transparent plate unit 4 as shown in FIG. The magnetic flux passing through the coils 12a and 12b provided in the frame member 3 increases, for example, at the beginning, and then decreases. Therefore, each of the coils 12a and 12b outputs output signals (induced electromotive forces) SG1 and SG3 as shown in FIGS. 11B and 11C as the magnet M moves in the directions F1 and F2. . In addition, when the winding direction of each coil 12a, 12b is a reverse direction, the positive / negative of an induced electromotive force becomes reverse to FIG.11 (b), (c). The signal processing circuit 51a connected to the coil 12a performs the signal processing in the various processing units described above on the output signal SG1 from the coil 12a as shown in FIG. Output. Further, the signal processing circuit 51b connected to the coil 12b sequentially performs the signal processing in the various processing units described above on the output signal SG3 from the coil 12b as shown in FIG. Is output. These output signals SG2 and SG4 are signals corresponding to the induced electromotive forces SG1 and SG3 generated by the coils 12a and 12b, respectively, and are output as digital signals, for example. The fraud detector 53 can detect whether or not the gaming machine 1 is cheating with a magnet by inputting these output signals SG2 and SG4.

  In particular, when the fraud detection unit 53 of the present embodiment receives one of the output signal SG2 based on the induced electromotive force SG1 generated in the coil 12a and the output signal SG4 based on the induced electromotive force SG3 generated in the coil 12b, As a result, it is possible to detect fraudulent acts using magnets. That is, even if one of the two coils 12a and 12b is disconnected, if the other coil is not disconnected, the fraud detector 53 is based on the induced electromotive force generated by the coil that is not disconnected. It is possible to detect fraudulent acts using magnets. Therefore, it has a perfect configuration for detecting fraud. Furthermore, since the coil is inexpensive, there is an advantage that such a perfect configuration can be realized at low cost.

  The number of turns of each coil 12a, 12b can be set as appropriate so as to have sufficient sensitivity to the approach and separation of the magnet M.

  Moreover, since each coil 12a, 12b is wound so that the game area | region 21 may be surrounded in the frame member 3, it is possible to detect the magnet M in the substantially whole region of the game area 21, and especially FIG. ), When the magnet M moves in the direction F1 approaching the transparent plate unit 4 or moves in the direction F2 away from the transparent plate unit 4, a large induced electromotive force is generated in each of the coils 12a and 12b. 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 moves in the vertical and horizontal directions with respect to the game area 21 while the magnet is in close proximity to the transparent plate unit 4, the magnetic flux penetrating the coils 12a and 12b also changes to some extent. Therefore, also in this case, an induced electromotive force is generated in each of the coils 12a and 12b. The induced electromotive force generated at this time is a small electromotive force as compared with the case of moving in the direction F1 or F2 shown in FIG. 11A, but the signal amplification factors in the signal processing circuits 51a and 51b are appropriately set in advance. It is possible to detect fraudulent behavior by adjusting to a proper value.

  As described above, in the gaming machine 1 according to the present embodiment, the magnet is moved in the vicinity of the game area 21 by the two coils 12a and 12b, the signal processing circuits 51a and 52b, and the fraud detector 53 provided in the transparent plate unit 4. If this is the case, it can be detected, and in particular, it has high sensitivity to the movement of the magnet approaching the game area 21 and the movement of the magnet moving away from the game area 21.

  Next, FIG. 12 is a diagram illustrating a configuration example of the self-diagnosis circuits 52a and 52b. As shown in FIG. 12A, the self-diagnosis circuit 52a is inserted, for example, at a position before the signal processing circuit 51a inputs the output signal SG1 from the coil 12a. The self-diagnosis circuit 52a includes a current source 54a connected to one end of the coil 12a, a current detection unit 55a connected to the other end of the coil 12a, and a disconnection of the coil 12a based on the detection result of the current detection unit 55a. And an abnormality detection unit 56a that detects the disconnection of the coil 12a and outputs an abnormality signal SG5 to the fraud detection unit 53. The current source 54a generates a weak constant current and causes the constant current to flow to one end of the coil 12a. When the coil 12a is not disconnected, the current detector 55a detects a constant current generated by the current source 54a. On the other hand, when the coil 12a is disconnected, the current detection unit 55a does not detect a constant current generated by the current source 54a. The abnormality detection unit 56a determines the disconnection of the coil 12a based on the current value detected by the current detection unit 55a. For example, when the current detection unit 55a does not detect any current, the abnormality detection unit 56a determines that the coil 12a is disconnected, and outputs an abnormality signal SG5 to the fraud detection unit 53. If the current detection unit 55a detects a current, the abnormality detection unit 56a determines that the coil 12a is not disconnected, and does not output an abnormality signal to the fraud detection unit 53.

  The self-diagnosis circuit 52b connected to the coil 12b is the same as described above. As shown in FIG. 12B, the current source 54b connected to one end of the coil 12b and the other end of the coil 12b are connected. Current detection unit 55b, and an abnormality detection unit 56b that detects disconnection of the coil 12b based on the detection result of the current detection unit 55b. When the abnormality detection unit 56b detects disconnection of the coil 12b, an abnormal signal is detected. SG6 is configured to be output to fraud detector 53.

  Therefore, the self-diagnosis circuit 52a, 52b can self-diagnose whether each coil 12a, 12b is functioning normally. The self-diagnosis by these self-diagnosis circuits 52a and 52b may be always performed 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.

  And the fraud detection part 53 can detect the disconnection of each coil 12a, 12b by inputting the abnormality signal SG5, SG6 output from each abnormality detection part 56a, 56b, and the fraud detection function by a magnet is carried out. Understand that the situation is not working effectively. When the fraud detection unit 53 detects that both the two coils 12a and 12b are disconnected, the fraud detection unit 53 outputs a signal indicating that both the two coils 12a and 12b are disconnected to the game control unit 50. On the other hand, in the state where only one of the two coils 12a and 12b is disconnected, since the other coil can detect fraud, the fraud detection unit 53 is in a state where the coil is disconnected. A signal indicating this is not output to the game control unit 50, and the function of detecting fraud is continued based on the induced electromotive force generated in the other coil.

  The game control unit 50 shown in FIG. 10 performs control according to the progress of the game by outputting a signal, a command, or the like 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 all of the two coils 12a and 12b are disconnected is received from the fraud detection unit 53, the game control unit 50 executes various processes for dealing with the coil disconnection at that timing. To do. 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. Further, the game control unit 50 notifies the hall computer via a communication interface (not shown) that the coil 12 is disconnected. Thereby, on the hall side, it is possible to grasp in real time which one of the many installed gaming machines has a disconnection state of the two coils 12a and 12b. Then, the gaming machine in which all of the coils 12a and 12b are disconnected can be stopped, or the transparent plate unit 4 can be replaced quickly.

  As described above, in the gaming machine 1 of the present embodiment, the coils 12a and 12b are arranged on the transparent plate unit 4 that is detachable from the window portion 5 of the frame member 3, and the induced electromotive force generated in the coils 12a and 12b. It is the structure which detects fraud based on this. Compared to a conventional reed switch type magnetic sensor or the like, the coil has a very simple structure, so that when a player strikes the transparent plate unit 4 or when a store clerk opens and closes the frame member The possibility of failure or damage due to impact or the like is extremely low, and stable fraud detection is possible.

  In addition, since the coils 12a and 12b in the present embodiment are both wound around the periphery of the game area 21, the visibility of the game area 21 is not deteriorated, and the magnet area is substantially used in the entire area of the game area 21. It is possible to detect fraud. 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.

  In particular, in the present embodiment, even if one of the two coils 12a and 12b is disconnected, it is possible to continue detecting fraud with the other coil. In addition, there is an advantage that such a configuration can be realized at low cost.

  Further, in the gaming machine 1 of the present embodiment, if the transparent plate unit 4 is attached to the window portion 5 of the frame member 3, the connector 14 is attached to the connector 15 thereby, so that the transparent plate unit 4 is attached. Apart from this, it is not necessary to perform wiring work or connection work for connecting the coils 12a, 12b provided on the transparent plate unit 4, and the work efficiency when the transparent plate unit 4 is mounted is improved. For example, it is conceivable to perform cable wiring in order to electrically connect the coils 12 a and 12 b to the frame member 3, but the cable wiring may be intentionally disconnected and is adopted as the gaming machine 1. Is less preferred. Therefore, by adopting a configuration in which the connector 14 is integrally attached to the holding portion 43 of the transparent plate unit 4 as in this embodiment, cable wiring can be eliminated as much as possible, and intentional disconnection of the cable is suppressed. You can expect the effect that you can.

  Moreover, in this embodiment, since the coils 12a and 12b are provided along the holding part 43 of the transparent plate unit 4, the coils 12a and 12b are not conspicuous at all. Since the coils 12a and 12b can be protected by providing the coils 12a and 12b between the first transparent plate 41 and the second transparent plate 42, an impact to such an extent that the coils 12a and 12b are disconnected is applied to each coil. In addition to preventing direct action on 12a and 12b, it is also possible to reduce the possibility of the coils 12a and 12b being cut by a malicious player or the like.

  Furthermore, in this embodiment, since the self-diagnosis circuits 52a and 52b for detecting the disconnection of the coils 12a and 12b are provided, in the unlikely event that all the two coils 12a and 12b are disconnected, an illegal act by the magnet is detected. Even if the situation becomes impossible, it is possible to quickly detect and deal with it.

(Second Embodiment)
Next, a second embodiment will be described. In the present embodiment, the same members as those already described in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Further, the control mechanism of the gaming machine 1 of the present embodiment is the same as that shown in FIG.

  FIG. 13 is a perspective view showing an external configuration of the gaming machine 1 in the present embodiment. As shown by a broken line in FIG. 13, the gaming machine 1 of the present embodiment includes a first coil 12 a provided in the transparent plate unit 4 that can be attached to and detached from the window portion 5 of the frame member 3, and the window portion 5. And a second coil 12b provided on the ball receiver 6 projecting downward from the front side.

  FIG. 14 is a perspective view showing a state in which a part of the transparent plate unit 4 is cut in order to explain the detailed configuration of the transparent plate unit 4. As shown by a broken line in FIG. 14, the transparent plate unit 4 is provided with a first coil 12a. The coil 12 a is provided between the first transparent plate 41 and the second transparent plate 42, and is arranged in a state of being wound a predetermined number of times along a holding portion 43 that holds the transparent plate 40. The coil 12a detects magnetism in the vicinity of the front of the game board 20.

  FIG. 15 is a partially enlarged cross-sectional view showing an arrangement example of the coils 12 a in the transparent plate unit 4. In the arrangement example of FIG. 15A, a concave groove 45 a is formed on the surface of the spacer portion 43 a of the holding portion 43 that faces the second transparent plate 42. And the coil 12a is arrange | positioned at the concave groove 45a, and can accommodate the substantially whole area | region of the transparent plates 41 and 42 in the inner side.

  Further, as shown in FIG. 15 (a), the concave plate 45a is provided on the surface of the spacer 43a facing the second transparent plate 42, and the coil 12a is arranged in the concave channel 45a, whereby the transparent plate unit 4 is framed. In the gaming state (the state shown in FIG. 13) attached to the member 3, it can be arranged so that the player cannot visually recognize the coil 12a.

  On the other hand, in the arrangement example of FIG. 15B, the first coil 12 a is arranged along the distal end portion of the spacer portion 43 a of the holding portion 43. Since the holding portion 43 is an annular member that holds the peripheral portions of the transparent plates 41 and 42, the coil 12 a is wound along the tip portion of the spacer portion 43 a, so that the substantially entire region of the transparent plates 41 and 42 is coiled. 12a can be stored inside. And the coil 12a can be arrange | positioned, without reducing the visibility of the game area | region 21 by fixing the coil 12a to the front-end | tip part of the spacer part 43a with an adhesive agent. Also in the arrangement example shown in FIG. 15B, the coil 12a is provided between the first transparent plate 41 and the second transparent plate 42, and is thus protected by the transparent plates 41 and 42. Therefore, for example, the coil 12a can be prevented from being cut by a malicious player or the like.

  Further, as shown by a broken line in FIG. 13, the second coil 12 b is arranged in a state where it is 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. Is done. The coil 12b is for detecting fraud due to a magnet in the vicinity of the upper portion of the ball receiving portion 6, and is configured not to be exposed on the surface of the ball receiving portion 6 by being arranged, for example, inside the upper surface cover of the ball receiving portion 6. Is provided. For this reason, the coil 12b cannot be confirmed from the appearance of the gaming machine 1.

  FIG. 16 is a partially cutaway view of the ball receiver 6 of the gaming machine 1 as viewed from the side. FIG. 17 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. 16 and 17, a holding portion 18 for holding the second coil 12 b is formed inside the ball receiving portion 6 projecting to the front side of the gaming machine 1 below the window portion 5. Yes. The holding portion 18 is formed in an annular shape inside the upper surface of the ball receiving portion 6. The coil 12b is disposed 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 12b 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.

  18 is a view of the gaming machine 1 according to the present embodiment as viewed from the front, and FIG. 19 is a view of the gaming machine 1 as viewed from the side. In the state shown in FIGS. 18 and 19, the player plays the 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. 18 and 19, the above-described coils 12a and 12b are arranged as indicated by broken lines in the drawing, for example. In other words, the first coil 12 a is provided in a state where it is wound a predetermined number of times so as to surround almost the entire game area 21, and the second coil 12 b is located on the front side below the transparent plate unit 4. It is provided in a state of being wound a predetermined number of times along the periphery of the upper surface of the protruding ball receiving portion 6. As shown in FIG. 18, the second coil 12 b 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 winning opening in order to guide the game ball to the starting opening 26, the electric tulip 27, and the big winning opening 28, the magnetic flux penetrating the first coil 12a changes accordingly. In addition, the magnetic flux passing through the second coil 12b also changes. As a result, an induced electromotive force is generated in each coil 12a, 12b in a direction that cancels the magnetic flux change. And the game machine 1 is comprised so that the fraudulent act by a magnet may be detected by detecting the induced electromotive force which generate | occur | produces in each coil 12a, 12b.

  Also, as shown in FIG. 18, the second coil 12b is provided in a state of projecting to the front side below the window portion 5 of the gaming machine 1, so that it detects fraudulent acts caused by magnets at a position closer to the player. Can do. Therefore, a magnet approaching the start port 26, the electric tulip 27, or the big winning port 28 located in the lower part of the game area 21 can be detected well.

  And since the 2nd coil 12b is not provided in the transparent plate unit 4, even if a player strikes a transparent glass plate, the impact by it does not act on the coil 12b, damage of the coil 12b, etc. Can be prevented. Further, as described above, the coil has a simple configuration that does not have a movable part such as a switch as compared with a conventional reed switch type magnetic sensor or the like, so that the coil itself 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 12b can sufficiently withstand the vibrations and impacts associated therewith.

  FIG. 20 is a diagram illustrating a concept of signal processing when an illegal act using a magnet is performed in the gaming machine 1 of the present embodiment. 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. 20 (a), or moving the magnet M in the direction F2 away from the transparent plate unit 4 The magnetic flux passing through the first coil 12a provided in the transparent plate unit 4 changes as the magnet M moves. Similarly, the magnetic flux passing through the second coil 12b provided in the ball receiving portion 6 also changes as the magnet M moves. Therefore, each of the coils 12a and 12b outputs the output signals (induced electromotive forces) SG1 and SG3 shown in FIGS. 20B and 20C as the magnet M moves in the directions F1 and F2. In addition, when the winding direction of each coil 12a, 12b is a reverse direction, the positive / negative of an induced electromotive force becomes reverse to FIG.20 (b), (c).

  20A, when the magnet M is moved in the direction F3 (downward) while the magnet M is close to the transparent plate unit 4, or the magnet M is moved in the direction F4 (upward). When moving the magnet M, the magnetic flux penetrating the second coil 12b provided in the ball receiving portion 6 changes as the magnet M moves. Therefore, also in this case, the coil 12b outputs the output signal (induced electromotive force) SG3 shown in FIG. 20C as the magnet M moves in the directions F3 and F4. Even in this case, since the magnetic flux passing through the first coil 12a slightly changes, the first coil 12a similarly outputs the output signal (induced electromotive force) SG1, but the sensitivity when the magnet M moves up and down. The second coil 12b is higher, and the vertical movement of the magnet can be detected well by the output signal SG3.

  The signal processing circuits 51a and 51b connected to the coils 12a and 12b perform various processes described above for the output signals SG1 and SG3 from the coils 12a and 12b as shown in FIGS. The output signals SG2 and SG4 are output by sequentially performing signal processing in the unit. And the fraud detection part 53 detects whether the fraudulent act by the magnet is performed in the gaming machine 1 by inputting those output signals SG2 and SG4.

  In particular, also in the present embodiment, the fraud detection unit 53 inputs one of the output signal SG2 based on the induced electromotive force SG1 generated in the coil 12a and the output signal SG4 based on the induced electromotive force SG3 generated in the coil 12b. Then, it detects that the fraudulent act by a magnet is performed by it. That is, even if one of the two coils 12a and 12b is disconnected, if the other coil is not disconnected, the fraud detector 53 is based on the induced electromotive force generated by the coil that is not disconnected. To detect fraudulent acts using magnets. Therefore, the gaming machine 1 of the present embodiment also has a perfect configuration for detecting fraud. Furthermore, since the coil is inexpensive, there is an advantage that such a perfect configuration can be realized at low cost.

  In particular, in the present embodiment, the first coil 12a can detect the movement of the magnet M well in almost the entire game area 21, whereas the second coil 12b is a starting port located at the lower part of the game area 21. 26, the movement of the magnet M in the vicinity of the electric tulip 27 or the big prize opening 28 can be detected well. For this reason, it is possible to satisfactorily detect the player's initial action of trying to bring the magnet M closer to the start opening 26, the big winning opening 28, etc. in order to perform an illegal act.

  As described above, the gaming machine 1 of the present embodiment detects, if the magnet M is moving in the vicinity of the game area 21 by the coils 12a and 12b, the signal processing circuits 51a and 51b, and the fraud detection unit 53. Can do.

  Note that the present embodiment is also similar to the first embodiment in that self-diagnosis circuits 52a and 52b for detecting disconnection of the coils 12a and 12b are provided.

  As described above, the gaming machine 1 of the present embodiment is arranged in a state where the first coil 12a is provided on the transparent plate unit 4 and wound around the gaming area 21 a predetermined number of times. Further, the second coil 12b is provided on the ball receiving portion 6 projecting to the front side below the window portion 5, and is arranged in a state where it is wound a predetermined number of times along the periphery of the upper surface. Therefore, each coil 12a, 12b can detect the movement of the magnet M satisfactorily at different positions of the gaming machine 1. Further, since the coils 12a and 12b are provided at different positions, the possibility that the two coils 12a and 12b are disconnected at the same time is extremely low. Even when one coil is disconnected, the other coil continues to detect fraud. It is possible.

(Modification)
As mentioned above, although several embodiment regarding this invention was described, this invention is not limited 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 can be applied to various gaming machines other than the gaming machines described above.

  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, in the second embodiment, the second portion along the periphery of the upper surface of the ball receiving portion 6 is provided. It is possible to detect fraud by a magnet by winding and arranging the coil 12b.

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 12a Coil (1st coil)
12b Coil (second coil)
20 Game board 21 Game area 51 (51a, 51b) Signal processing circuit 52 (52a, 52b) Self-diagnosis circuit (self-diagnosis means)
53 Fraud detection unit (fraud detection means)

Claims (4)

A game board having a 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 first coil that generates a first induced electromotive force as the magnet moves in the vicinity of the transparent plate unit;
A second coil that generates a second induced electromotive force as the magnet moves in the vicinity of the transparent plate unit;
Fraud detection means for detecting fraud based on at least one of the first and second induced electromotive forces;
A gaming machine comprising:   2. The gaming machine according to claim 1, wherein each of the first and second coils is provided in the transparent plate unit and is arranged in a state of being wound around the periphery of the gaming area. The ball receiving portion is provided so as to project to the front side below the window portion, and receives a prize ball,
The first coil is provided in the transparent plate unit, and is arranged in a state of being wound a predetermined number of times along the periphery of the game area,
2. The gaming machine according to claim 1, wherein the second coil is arranged in a state where it is 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.   4. The gaming machine according to claim 1, further comprising self-diagnosis means for detecting disconnection of the first and second coils.

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