JP2011245230A - Speaker for game machine and game machine using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a speaker for a game machine for detecting fraudulent actions to a game machine such as inserting a wire or a piano wire into a speaker diaphragm and breaking through the speaker diaphragm, and to provide the game machine using the speaker, the speaker for a game machine being particularly more inexpensive than a conventional speaker for a game machine therefore easily adopted, and detecting fraudulent actions with stable operations.SOLUTION: In the speaker for the game machine, a diaphragm has an insulating base body and a conductive layer connected to one of both positive and negative terminals of a conduction detection terminal by a connection line on the surface on the front surface side of the base body, a front surface panel and a frame formed of an energizing metal are connected holding an insulating gasket therebetween, and the front surface panel is connected to the other of both positive and negative terminals of the conduction detection terminal by the connection line.

Description

  The present invention relates to a game machine speaker for playing game sound including sound effects, notification sounds, etc. of game machines, and a game machine using the same, and in particular, acts of cheating on game machines through the game machine speakers. The present invention relates to a gaming machine speaker capable of detecting the presence or absence of fraudulent acts and notifying an administrator or neighboring players when such a player is present, and a gaming machine using the same.

  In game machines such as pachinko machines, slot machines, arcade game machines, etc., a speaker is attached to reproduce voices such as voices that enhance the effect of playing the game or various warning sounds. . In a game machine speaker, a vibration system including a speaker diaphragm is likely to be destroyed when a player touches, so that a cover or a front panel is generally provided on the front side. In addition, there are some players who try to cheat on gaming machines even if they break wires by inserting wires or piano wires into the gaming machine speakers. There is an amusement machine that adds a device to the configuration of a speaker for an amusement machine.

  For example, conventionally, it is a cover body that can be disposed at a predetermined position of a gaming machine and that can protect the front side of an output unit in a sound effect output device that can output various sound effects according to the gaming state, and the cover body Consists of a first cover member and a second cover member that are each formed with an opening that allows passage of various sound effects output from the output portion of the sound effect output device, and is overlapped in the front-rear direction. The first cover member disposed in the vicinity of the portion is spaced apart at a required interval in the front-rear direction so as to be concave toward the substantially central portion, and has a plurality of restrictions whose outer dimensions become smaller toward the rear side. And the second cover member disposed on the front side of the first cover member corresponds to the outer frame of the first cover member. A plane formed in a dish-like size A plurality of openings are formed in the first cover member, the openings formed in the first and second cover members are set to different shapes, and foreign matter that has passed through the openings of the second cover member is removed from the first cover member. There is a cover body of a sound effect output device characterized in that it is configured to be regulated by (Patent Document 1).

  In addition, for example, in order to prevent an illegal act of inserting a fraudulent member such as a piano wire from a sound outlet and operating internal devices, a support plate on the gaming machine main body side and a front side of the support plate And a front cover that includes a speaker including a speaker unit on the support plate, and a sound emitting opening corresponding to the speaker provided on the front cover. There is a gaming machine characterized in that a fraud prevention wall is integrally provided on the mounting plate and projecting toward the front cover outside the sound emission port (Patent Document 2). .

  Alternatively, in a gaming machine capable of playing with a game medium as a speaker unit capable of detecting fraudulent acts at an early stage and preventing them by detecting that a speaker capable of performing fraudulent notification has been destroyed. A speaker unit that is arranged and performs a sound effect, the speaker performing the sound effect by a sound generation operation based on energization, a detection unit that detects the operation of the speaker, and a detection result by the detection unit There is a speaker unit that includes a control unit that determines whether or not the operation of the speaker is normal and transmits a notification signal when the operation is determined to be abnormal (Patent Document 3).

  In addition, in order to provide a gaming machine in which the speaker's diaphragm breaks down and the speaker loses its function as an alarm means and can prevent subsequent illegal acts on the gaming machine, the diaphragm is vibrated to generate sound from the front. A gaming machine equipped with an output speaker, wherein a diaphragm breakage detecting means for detecting whether or not the diaphragm has been broken through by a foreign object from the front side of the diaphragm so that the diaphragm cannot be visually recognized from the outside. There is a gaming machine characterized by being provided on the rear side (Patent Document 4). In addition, foreign matter insertion detection means for detecting whether or not foreign matter has been inserted from the front of the speaker toward the diaphragm, the foreign matter insertion detection means covers the front surface of the diaphragm of the speaker. A moving plate supported in front of the speaker so as to be movable in the front-rear direction; and a movement detecting means for detecting whether the moving plate has moved from the predetermined position in the front-rear direction over a predetermined distance with respect to the speaker. There is a gaming machine characterized by comprising (Patent Document 5).

  However, there is a problem with the conventional configuration in order to detect fraudulent acts on a gaming machine that inserts a wire or a piano wire into a gaming machine speaker and breaks through the speaker diaphragm. For example, in order to realize a speaker for a game machine including the detection unit for detecting the operation of the speaker of Patent Document 3, the diaphragm break detection unit of Patent Document 4, or the moving plate and the movement detection unit of Patent Document 5. The cost is much higher than that of a conventional speaker for an amusement machine, and there is a problem that it is difficult to adopt in reality.

  On the other hand, in the conventional wiring structure of the diaphragm of the speaker, at least two conductor portions are formed on one surface of the diaphragm, and the conductor portions serve as an input conduction path to the voice coil. A terminal member corresponding to the conductor part is arranged on the frame in which the diaphragm is to be incorporated, and the outer peripheral part of the conductor part is pressed against the terminal member by pressing and fixing the outer peripheral part of the diaphragm through the fixing member. Some are connected (Patent Document 6).

Japanese Patent No. 4003209 JP 2008-229230 A JP 2008-82191 A JP 2009-101064 A JP 2009-101066 A Japanese Utility Model Publication No. 62-64096

  The present invention has been made in order to solve the above-described problems of the prior art, and the purpose of the present invention is to improperly operate a gaming machine that inserts a wire or a piano wire into a gaming machine speaker and breaks through the speaker diaphragm. A gaming machine speaker for detecting an action and a gaming machine using the same, and in particular, a gaming machine that is cheaper and easier to adopt than a conventional gaming machine speaker, and that can detect an illegal act with stable operation. It is to provide a speaker.

  A speaker for a game machine according to the present invention includes a frame including an attachment part attached to a fixed attachment part of a game machine, a diaphragm attached from the front side so as to be able to vibrate with respect to the frame, and a front surface of the diaphragm having air permeability. A front panel covering the side, and the diaphragm has an insulating base and a conductive layer connected to one of the positive and negative terminals of the conduction detection terminal by a connection line on the front side surface of the base, A front panel and a frame formed of conductive metal sandwich and connect an insulating gasket, and the front panel is connected to the other of the positive and negative terminals of the conduction detection terminal by a connection line. .

  Preferably, in the speaker for a game machine according to the present invention, the base of the diaphragm is formed of paper, a woven cloth containing carbon fiber, or a resin, and the conductive layer of the diaphragm is a woven cloth containing carbon fiber, metal The front panel is formed from a punching member in which a large number of small holes are provided in a metal plate made of an alloy containing iron or aluminum.

  Preferably, the game machine speaker of the present invention further includes an edge connected to the outer peripheral portion of the diaphragm, and the edge is formed on the insulating base and the conductive layer of the diaphragm on the front surface of the base. It has a conductive layer that conducts.

  Preferably, the game machine speaker of the present invention further includes a dust cap that covers an inner periphery of the diaphragm, and the dust cap is provided on the surface of the insulating base and the front side of the base. A conductive layer which is electrically connected to the layer;

  Preferably, the gaming machine of the present invention is the above gaming machine speaker, the continuity detection circuit connected to the continuity detection terminal, the control circuit connected to the output terminal of the continuity detection circuit, the gaming machine speaker and the game. And an insulating member sandwiched between the fixed mounting portions of the machine, and the conductive layer of the diaphragm and the front panel are in an insulated state in which they are not conducted by the gasket and the insulating member.

  The operation of the present invention will be described below.

  A speaker for a game machine according to the present invention includes a frame including an attachment part attached to a fixed attachment part of a game machine, a diaphragm attached from the front side so as to be able to vibrate with respect to the frame, and a front surface of the diaphragm having air permeability. A front panel covering the side; and a gasket sandwiched between the front panel and the frame. The diaphragm is formed of an insulating material such as a paper material, a woven fabric containing carbon fiber, or a resin, and a surface of the substrate is typically a metal foil such as an aluminum foil or a representative surface. Specifically, it has a conductive layer formed by woven fabric containing carbon fiber or metal deposition such as aluminum deposition. The front panel and the frame are made of a conductive metal, and the gasket is made of paper, resin, rubber or other insulating material. The gaming machine speaker is fixed via an insulating member sandwiched by the fixed mounting part of the gaming machine, and is attached to the fixed mounting part of the gaming machine in an insulated state in which the gaming machine and the front panel of the gaming machine speaker are not electrically connected. And playing the game voice of the game machine.

  In the game machine speaker according to the present invention, the diaphragm has a conductive layer formed by metal foil or metal vapor deposition on the surface on the front side of the base, and this conductive layer is connected to the positive / negative of the conduction detection terminal. Connected to one of both terminals. Further, the front panel of the game machine speaker is preferably formed of a punching member in which a large number of small holes are provided in a metal plate made of an alloy containing iron or aluminum. In addition, in the game machine speaker of the present invention, the front panel and the frame are connected by sandwiching an insulating gasket, and the front panel is connected to the other of the positive and negative terminals of the conduction detection terminal by the connection line. It is connected.

  Therefore, when a player performs an illegal act such as inserting a conductor such as a wire or a piano wire into the speaker for the game machine of the present invention, the conductive layer of the diaphragm that is originally not conductive and the front panel However, since it becomes conductive through the inserted metal wire or piano wire, the game machine can detect fraud. That is, the game machine includes the speaker for the game machine of the present invention, the continuity detection circuit connected to the continuity detection terminal, and the control circuit connected to the output terminal of the continuity detection circuit. If it is detected that the conductive layer and the front panel are in a short-circuit state where the conductive layer of the diaphragm and the front panel are in a conductive state, compared to the normal state where the conductive layer and the front panel are attached to the fixed mounting portion in an insulating state where they are not conductive, Can detect cheating. Since the continuity detection circuit has a simple configuration that detects the presence or absence of continuity between the conductive layer of the diaphragm of a gaming machine speaker and the front panel, the continuity detection circuit is less expensive than conventional gaming machine speakers. Easy to do.

  A diaphragm for a gaming machine speaker has a conductive layer on the front surface of the base, and the front panel is formed of a punching member in which a large number of small holes are provided in a metal plate made of an alloy containing iron or aluminum. Then, since the inserted wire or piano wire is easy to contact, it is possible to easily detect such an illegal act. Further, when the edge connected to the outer periphery of the diaphragm so as to vibrate the diaphragm has an insulating base and a conductive layer connected to the conductive layer of the diaphragm on the front surface of the base Alternatively, if the dust cap covering the inner periphery of the diaphragm has an insulating base and a conductive layer conducting to the conductive layer of the diaphragm on the front surface of the base, the inserted wire Or since the area which a piano wire contacts substantially expands, it can be easy to detect such a fraud.

  Gaming machines can detect fraudulent acts such as inserting wires or piano wires into the amusement machine speakers. In particular, the cost is cheaper and easier to adopt than conventional gaming machine speakers, and the operation is stable. Thus, it is possible to provide a gaming machine speaker capable of detecting fraud.

It is sectional drawing explaining the speaker 1 for game machines by preferable embodiment of this invention. Example 1 FIG. 4 is a front view and a side view (partially A-A ′ cross-sectional view) illustrating a slot machine 20 according to a preferred embodiment of the present invention. Example 1 It is sectional drawing explaining the speaker 1 for game machines by preferable embodiment of this invention. Example 1

  FIG. 1 is a cross-sectional view illustrating a game machine speaker 1 according to a preferred embodiment of the present invention. FIG. 2 is a view for explaining a slot machine 20 which is a game machine in which the game machine speaker 1 is attached as left and right speakers 1L and 1R. Specifically, FIG. 2A is a front view of the slot machine 20, and FIG. 2B is a side view thereof (partially a sectional view at the center). In FIG. 1, a structure in which the gaming machine speaker 1 is attached to the slot machine 20 is depicted as a half sectional view from the top side. Further, as shown in FIG. 1, the game machine speaker 1 is connected to a control circuit 30 via a continuity detection circuit 31 described later. In addition, illustration and description of the internal structure and the like that are not necessary for the description of the gaming machine speaker 1 or the slot machine 20 are omitted.

  The game machine speaker 1 of the present embodiment is an electrodynamic speaker having a diameter of about 10 cm, and is a speaker having a speaker diaphragm 2 which is a cone diaphragm having a circular inner periphery and outer periphery. The outer peripheral end of the speaker diaphragm 2 is supported by an edge 3, and the outer peripheral end of the edge 3 is fixed to the frame 6. Further, a round cylindrical bobbin 4a constituting the voice coil 4 is connected to the inner peripheral end of the speaker diaphragm 2, and the bobbin 4a around which the coil 4b of the voice coil 4 is wound and fixed. Is supported by the damper 5 so as to vibrate. A magnetic circuit 10 to be described later fixed to the frame 6 has a magnetic gap in which the coil 4b of the voice coil 4 is disposed. In the slot machine 20, the frame 6 of the gaming machine speaker 1 is attached to a fixed attachment portion 21 provided on the inner side of the slot machine 20 via an insulating member 18.

  The slot machine 20 has a fixed mounting portion 21 to which the game machine speaker 1 is fixed on the front side of the casing to which the reels 23a to 23c, the medal processor, and the like are mounted. The door body 22 is provided. When the door body 22 is opened, maintenance of the slot machine 20 and internal part assembly can be performed. In addition, a reel window 23, a medal insertion hole 24, a switch 25, a display 26, and a medal discharge hole 27 are attached to the door body 22. That is, the gaming machine speaker 1 is attached to the front side of the slot machine 20 so that the front panel 15 having air permeability covering the front side of the speaker diaphragm 2 is exposed from the sound emission hole provided on the front side of the door body 22. Is attached.

  Further, in the slot machine 20 of the present embodiment, when playing, when a player inserts a medal into the medal insertion hole 24 and presses the start button 25s, the reels 23a to 23c start to rotate, and any stop button 25b is pressed. The corresponding reels 23a to 23c stop rotating. A plurality of symbols are printed on the reels 23 a to 23 c, and medals are ejected from the medal processor 29 through the medal discharge hole 27 according to the symbols when the reels 23 a to 23 c are stopped. The game is controlled by a control circuit 30 including a CPU, a memory, and the like. Since the left speaker 1 </ b> L and the right speaker 1 </ b> R of the present embodiment for reproducing the notification sound and the like are attached to the door body 22 of the slot machine 20, the audio signal output from the control circuit 30 is amplified (not shown). Amplified by the circuit and supplied to the left speaker 1L and the right speaker 1R, which are respectively arranged on the left and right in front of the player. Therefore, the slot machine 20 of the present embodiment can provide a player with a powerful reproduction sound from the front of the player. In addition, the control circuit 30 is connected to a continuity detection circuit 31 (described later) provided inside the housing of the slot machine 20, and the continuity detection circuit 31 is connected to a continuity detection terminal of the gaming machine speaker 1 via a connection line 32. Is connected to a terminal 17 including

  In a speaker 1 for a game machine, a speaker diaphragm 2 which is a cone-shaped diaphragm is a paper cone diaphragm having an insulating base formed by paper-making and cutting a pulp material. And a conductive layer 2a formed by adhering a woven fabric containing carbon fibers. In addition, the edge 3 is an edge having a roll shape with a convex cross section, and in this embodiment, the woven fabric of flexible fibers is used as a base material and impregnated with a phenol resin, which is a thermosetting resin, and is heated. The conductive layer 3a is formed by adhering a woven fabric containing carbon fibers to the front surface of the base material.

  The speaker diaphragm 2 is supported at its outer peripheral edge by the edge 3, and the outer peripheral edge of the edge 3 is fixed to the frame 6, so that the speaker diaphragm 2 is attached from the front side so as to vibrate with respect to the frame 6. It has been. A gasket 14 made of resin is bonded to the front surface side of the outer peripheral portion of the edge 3, and a front panel 15 is bonded to the front surface side of the gasket 14.

  The voice coil 4 is formed of a bobbin 4a formed in a cylindrical shape, and a coil 4b wound around one end thereof and supplied with an audio current. The bobbin 4a is connected to the inner peripheral end of the speaker diaphragm 2 by an adhesive on the outer surface side of the cylinder. The coil 4b is disposed in a circular magnetic gap of the magnetic circuit 10 described later. The tinsel wire 9 is soldered to the lead wire of the coil 4b on the cylindrical outer surface side of the bobbin 4a, and conducts the audio current supplied to the terminal 7 to the coil 4b.

  The damper 5 is a corrugation damper having a circular inner shape and outer shape formed by impregnating a phenol resin with a woven fabric of flexible fibers as a base material. The inner peripheral end of the damper 5 is connected to the cylindrical outer surface side of the bobbin 4 a to support the vibration system including the speaker diaphragm 2. The outer peripheral end side of the damper 5 is fixed to a fixing portion of the frame 6. The damper 5 may be a corrugation damper of another shape, or may be formed of other materials, and has an arm that connects the inner ring and the outer ring, Alternatively, a butterfly damper formed of resin may be used.

  The frame 6 is an iron plate frame press-molded in a basket shape corresponding to the shape of the speaker diaphragm 2 and is formed from a punching member in which a large number of small holes are provided in a steel plate made of an alloy containing iron. The frame 6 includes an attachment portion attached to the fixed attachment portion 21 of the slot machine 20, a substantially circular first fixing portion that fixes the edge 3 corresponding to the outer peripheral end portion of the speaker diaphragm 2, and an inner portion of the speaker diaphragm 2. A substantially circular second fixing portion for fixing the damper 5 corresponding to the peripheral end portion; a substantially circular third fixing portion extending from the second fixing portion to fix the magnetic circuit 10; a first fixing portion; A connecting portion for connecting the second fixing portion; and an attaching portion for attaching the terminal 7 and the terminal 17 to the connecting portion. Therefore, the speaker vibration system including the speaker diaphragm 2, the edge 3, the voice coil 4, the dust cap 8, and the damper 5 is supported so as to be able to vibrate with respect to the frame 6. In addition, a large number of small holes 6a are defined in the connecting portion of the frame 6 formed from a punching member.

  The dust cap 8 is a substantially dome-shaped member formed by papermaking and cutting a pulp material, and is attached to the end of the bobbin 4a of the voice coil 4 with an adhesive. The dust cap 8 has a conductive layer 8a formed by adhering a woven fabric containing carbon fibers to the front surface thereof. The dust cap 8 is a circular dust cap corresponding to the voice coil 4 having a cylindrical cross section, and prevents dust such as iron powder from entering the circular magnetic gap of the magnetic circuit 10. The dust cap 8 may be fixed to the speaker diaphragm 2 with an adhesive.

  In FIG. 1, the conductive layer 2a of the speaker diaphragm 2 indicated by diagonal lines, the conductive layer 3a of the edge 3, and the conductive layer 8a of the dust cap 8 are connected so as to be electrically connected to each other, and a connection tinsel wire 16b described later. Is connected to one of the positive and negative terminals of the conduction detection terminal of the terminal 17. The connection tinsel wire 16b makes the both ends of the conductive layer 2a of the speaker diaphragm 2 and the terminal 17 fixed to the frame 6 solder to each other through a metal eyelet 19 provided on the speaker diaphragm 2.

  The magnetic circuit 10 includes an annular top plate 11 fixed to the frame 6 by caulking, a center pole inserted into a circular hole formed in the center of the top plate 11, and a flat plate-like under plate. It comprises a pole 12 having a ring shape and an annular magnet 13. The top plate 11 and the pole 12 form a circular magnetic gap having a uniform width. The magnet 13 is bonded so as to be sandwiched between the top plate 11 and the under plate of the pole 12. The magnet 13 of the present embodiment is a ferrite magnet, and may be a Nd—Fe—B rare earth magnet having a larger residual magnetization and coercive force, and having a small volume and a strong coercive force. The magnetic circuit 10 is an external magnet type magnetic circuit in which a magnet is disposed outside a region to be projected when the coil 4b of the voice coil 4 is viewed in plan.

  Therefore, when an audio current is supplied to the coil 4b of the voice coil 4 of the gaming machine speaker 1 via the terminal 7, a driving force is applied to the voice coil 4 disposed in the magnetic gap, and the voice coil 4 is moved back and forth. It vibrates in the direction (vertical direction in the figure), and the connected speaker diaphragm 2 also vibrates in the front-rear direction. In the case of the game machine speaker 1 of this embodiment, the speaker diaphragm 2 which is a lightweight paper cone diaphragm formed by making and cutting pulp material is provided, so that the reproduction efficiency of the electrodynamic speaker is improved. Can be increased.

  The gasket 14 provided on the front side of the outer peripheral portion of the edge 3 is a member formed by molding a resin into a ring shape having a rectangular cross section. For example, the gasket 14 is an insulating member made of ABS resin and not electrically conducting. The gasket 14 may be a gasket formed by laminating and cutting paper materials, and may be an insulating member such as rubber that is not electrically conductive.

  A front panel 15 formed of a punching member in which a large number of small holes are provided in a steel plate made of an alloy containing iron is bonded to the front side of the gasket 14. Since the front panel 15 has air permeability due to the small holes, the reproduction efficiency of the game machine speaker 1 can be increased as the small holes are larger and the aperture ratio is higher. However, the front panel 15 that prevents the vibration system including the speaker diaphragm 2 of the speaker 1 for amusement machines from being destroyed should have an appropriate aperture ratio that balances securing of reproduction efficiency and prevention of foreign matter intrusion. desired.

  Further, the front panel 15 of the game machine speaker 1 is made of an electrically conductive metal, and is insulated from the frame 6 also made of the electrically conductive metal by an insulating gasket 14. The frame 6 of the game machine speaker 1 is fixed via an insulating member 18 held between the fixed mounting portions 21 of the slot machine 20. Since the insulating member 18 is a sheet-like airtight material that fills the gap with the frame 6 and enhances airtightness, the speaker diaphragm can be used even when the fixed mounting portion 21 of the slot machine 20 is made of a material such as conductive metal. 2 and the frame 6 and the front panel 15 are ensured to be attached to the fixed attachment portion 21 of the slot machine 20 in an insulated state.

  When the fixed mounting portion 21 of the slot machine 20 is a conductive member such as metal, the insulating member 18 is used to fix the frame 6 of the speaker 1 for game machines, and the frame 6 is fixed. It is preferable to use an insulating resin screw or the like for the fixture. Further, when the fixed mounting portion 21 of the slot machine 20 is an insulating member such as a resin, and the frame 6 of the game machine speaker 1 is fixed, the frame 6 and the front panel 15 are kept in an insulated state. The insulating member 18 can be omitted. Of course, an insulating member 18 may be further provided between the front panel 15 of the gaming machine speaker 1 and the door body 22 of the slot machine 20 to ensure insulation between the frame 6 and the front panel 15.

  In addition to the terminal 7 to which the audio signal is input, the connecting portion of the frame 6 is provided with a mounting portion for attaching a terminal 17 provided with both positive and negative terminals of the conduction detection terminal. That is, the terminal 17 is provided with both positive and negative terminals of a conduction detection terminal for detecting conduction between the front panel 15 and the conductive layer 2a of the speaker diaphragm 2, and the front panel 15 and the positive terminal of the conduction detection terminal are connected to each other. The conductive layer 2a of the speaker diaphragm 2 and the negative terminal of the conduction detection terminal are connected by a connection tinsel wire 16b. The terminal 17 including both positive and negative terminals of the continuity detection terminal is connected to the continuity detection circuit 31 via the connection line 32.

  The continuity detection circuit 31 includes a DC power supply that applies a positive potential between both positive and negative terminals, a protective resistor that protects the DC power supply from overcurrent when the positive and negative terminals are short-circuited, and a short circuit between the positive and negative terminals. And a current measuring circuit (not shown) for measuring the level of the current i flowing through the protective resistor when it is applied. In the continuity detection circuit 31, the conductive layer 2 a of the speaker diaphragm 2 that is originally fixed to the frame 6 and the front panel 15 that is not conductive by sandwiching the insulating gasket 14 are in a conductive state. In this case, the level of the current i flowing through the connection line 16a, the connection tinsel line 16b, and the connection line 32 is measured, and if the current i exceeds a predetermined value, the conductive layer 2a of the speaker diaphragm 2 and the front panel 15 And are detected to be short-circuited. The control circuit 30 of the slot machine 20 is connected to the output terminal of the continuity detection circuit 31. Therefore, compared to the normal state in which the continuity detection circuit 31 is attached to the fixed mounting portion 21 in an insulated state where the conductive layer 2a of the speaker diaphragm 2 and the front panel 15 are not conductive, the conductive layer 2a of the speaker diaphragm 2 If it is detected that the front panel 15 is in a short-circuited state, the control circuit 30 of the slot machine 20 can easily detect fraud.

  FIG. 3 is a diagram for explaining a case where an illegal act is performed on the gaming machine speaker 1 of the slot machine 20 of the present invention. A player who intends to cheat inserts the wire X shown in the small hole of the front panel 15 of the speaker 1 for the game machine, breaks through the speaker diaphragm 2, and places the tip portion of the wire X inside the casing of the slot machine 20. An operation of the control circuit 30 is changed from a normal state by contacting any one of the circuits. A player who tries to cheat can easily insert the tip portion of the wire X into the small hole of the front panel 15 of the speaker 1 for the gaming machine exposed to the front side of the slot machine 20. However, when the tip portion of the wire X comes into contact with the speaker diaphragm 2 and tries to enter the back side thereof, the wire X is electrically connected to the conductive layer 2a of the speaker diaphragm 2 or the edge 3 at the contact X1. Either the layer 3a or the conductive layer 8a of the dust cap 8 must be contacted.

  In addition, when a player who attempts fraud operates the wire X, the contact X2 on the front side of the wire X comes into contact with the front panel 15 that defines the small hole. As a result, when the wire X is made of a conductive metal such as a piano wire, the conductive layer 2a of the speaker diaphragm 2 and the front panel 15 of the speaker 1 for an amusement machine that is not normally conductive are inserted. Thus, the control circuit 30 of the slot machine 20 can detect an illegal act on the gaming machine speaker 1 via the continuity detection circuit 31. In other words, in a normal state where the conductive layer 2a of the speaker diaphragm 2 and the front panel 15 are attached to the fixed mounting portion 21 in an insulated state without conduction, the current i does not flow through the conduction detection circuit 31, but the speaker diaphragm 2 If the continuity detection circuit 31 detects that the conductive layer 2a and the front panel 15 are in a short-circuit state, the control circuit 30 connected to the continuity detection circuit 31 has a conductive wire X that breaks through the speaker diaphragm 2. It can be detected that the inserted fraud has been done.

  The control circuit 30 that has detected that an illegal act has been made on the game machine speaker 1 informs the manager of the slot machine 20 or surrounding players. That is, the control circuit 30 changes the control mode of the slot machine 20 to stop the game, emits a predetermined lamp or LED, and notifies an alarm, or the central management to which the slot machine 20 is connected. Control such as notifying an alarm signal to the apparatus can be performed.

  In the case of the present embodiment, the speaker diaphragm 2, the edge 3, and the dust cap 8 are each formed of a conductive layer 2a formed by adhering a woven fabric containing carbon fiber on the front surface thereof, or 3a or 8a, which are connected to each other. In addition, since the frame 6 and the front panel 15 are formed of a punching member provided with a large number of small holes in a steel plate made of an alloy containing iron, the inserted wire or piano wire is easy to contact, It is easy to detect fraud. The slot machine 20 including the gaming machine speaker 1 capable of detecting the presence or absence of fraud in this embodiment has an advantage that the cost is lower and easier to adopt than the conventional gaming machine speaker.

  In the gaming machine speaker 1 of this embodiment, the frame 6 is disposed on the back side of the edge 3, and the magnetic circuit 10 is disposed on the back side of the dust cap 8. The speaker diaphragm 2 has the widest area. Rather than trying to break through the edge 3 or the dust cap 8 with the conductive wire X, the speaker diaphragm 2 tries to break through the conductive wire X with the conductive wire X. It can be said that fraudulent acts that occur are more frequent. Therefore, in the game machine speaker 1, the conductive layer 2a is provided on the front surface of the speaker diaphragm 2 even if the conductive layer 3a of the edge 3 or the conductive layer 8a of the dust cap 8 is not formed respectively. Thus, it is only necessary to detect conduction with the front panel 15.

  In addition, if the frame 6 is an iron plate frame press-molded in a basket shape, a large number of small holes 6a may be provided only in the connecting portion that connects the first fixing portion and the second fixing portion. The frame 6 is not limited to the case of using a punching member in which a large number of small holes are previously provided in a steel plate made of an alloy containing iron. When using a normal steel plate, the frame 6 may be provided with a large number of small holes in the opening window portion defined in the connecting portion at any stage of the press molding process.

  In this embodiment, since the frame 6 is provided with a large number of small holes 6a, the stiffness of air on the back side of the speaker diaphragm 2 can be reduced as compared with the case where the frame 6 is sealed without opening. . Therefore, even if it has a function of preventing an increase in the minimum resonance frequency f0 and detecting fraud, it is possible to realize the gaming machine speaker 1 having excellent reproduction capability in the low sound range. Of course, if the small hole 6a of the frame 6 is made small or the small hole 6a is not provided in the frame 6, the risk of fraudulent acts on the gaming machine speaker 1 can be further reduced, so the frame 6 is not necessarily limited. It is not necessary to provide a large number of small holes 6a as shown in FIG.

  Further, in this embodiment, another terminal 17 is provided at the connecting portion of the frame 6, and both positive and negative terminals of the conduction detection terminal for detecting conduction between the front panel 15 and the conductive layer 2 a of the speaker diaphragm 2 are provided. However, the conduction detection terminal may be separately provided on each of the front panel 15 and the conductive layer 2a of the speaker diaphragm 2. In some cases, the sections may be cut and raised in the respective molding steps of the front panel 15 and the frame 6, and these may be used as the conduction detection terminals.

  In addition, the method for detecting that the continuity detection circuit 31 is in a short-circuit state where the conductive layer 2a of the speaker diaphragm 2 and the front panel 15 are conductive is not limited to the above case. The power supply circuit included in the continuity detection circuit 31 may be an AC power supply circuit having a specific frequency. In addition, the control circuit 30 uses, as a reference for detecting that an illegal act has been performed, when the short-circuit state is longer or shorter than a predetermined time, or when the short-circuit state is detected more than a predetermined number of times within a predetermined time. If done, it may be determined that fraud has occurred.

  In the present embodiment, the continuity detection circuit 31 is provided in the casing of the slot machine 20 separately from the game machine speaker 1, but the continuity detection circuit 31 is integrated with the game machine speaker 1. It may be provided. That is, the game machine speaker includes a continuity detection terminal that connects the front panel and the frame to both the positive and negative terminals through connection lines, and a continuity detection circuit that is connected to the continuity detection terminal. Or what is necessary is just to be fixed to the magnetic circuit.

  In addition, the speaker for the game machine of the present embodiment is not limited to the case where the outer shape of the speaker diaphragm or the frame is the above-mentioned circular shape, and the major axis dimension and the minor axis dimension such as a track shape, an elliptical shape, an oval shape, a rectangular shape, and a rectangular shape. It may be an elongated gaming machine speaker with a large ratio. Further, the base of the speaker diaphragm 2 may be made of a woven fabric containing carbon fibers or a resin other than paper. Moreover, the conductive layer 2a of the speaker diaphragm 2 may be formed by metal foil or metal vapor deposition other than the woven fabric containing carbon fiber.

  The game machine speaker according to the present invention is not only a speaker built in a game machine, a pachinko machine, or a game machine such as a slot machine, but also an electronic device with a built-in speaker, which requires prevention of fraud. It can also be applied to vending machines or ATMs.

DESCRIPTION OF SYMBOLS 1, 1a Speaker 2 for game machines Speaker diaphragm 3 Edge 4 Voice coil 5 Damper 6 Frame 7 Terminal 8 Dust cap 9 Kinshi wire 2a, 3a, 8a Conductive layer 10 Magnetic circuit 11 Top plate 12 Pole 13 Magnet 14 Gasket 15 Front panel 16a connecting wire 16b connecting tinsel wire 17 terminal 18 insulating member 19 eyelet 20 slot machine 21 fixed mounting portion 22 door body 23 reel window 24 medal insertion hole 25 switch 26 indicator 27 medal discharge hole 30 control circuit 31 continuity detection circuit 32 connecting line

Claims (5)

A frame including an attachment portion attached to a fixed attachment portion of the game machine, a diaphragm attached to the frame from the front side so as to vibrate, and the front panel having air permeability and covering the front side of the diaphragm; With
The diaphragm has an insulating base and a conductive layer connected to one of the positive and negative terminals of the conduction detection terminal by a connection line on the front surface of the base;
The front panel and the frame formed of a conductive metal sandwich and connect an insulating gasket, and the front panel is connected to the other of the positive and negative terminals of the conduction detection terminal It is connected to the,
Speaker for game machines. The base of the diaphragm is formed from paper, a woven fabric containing carbon fibers, or a resin;
The conductive layer of the diaphragm is formed by a woven fabric containing carbon fiber, metal foil, or metal vapor deposition,
The front panel is formed from a punching member provided with a large number of small holes in a metal plate made of an alloy containing iron or aluminum.
The game machine speaker according to claim 1. An edge connected to the outer periphery of the diaphragm;
The edge has an insulating base and a conductive layer that is electrically connected to the conductive layer of the diaphragm on the front surface of the base.
The speaker for game machines according to claim 1 or 2. A dust cap that covers the inner periphery of the diaphragm;
The dust cap has an insulating base and a conductive layer connected to the conductive layer of the diaphragm on the front surface of the base.
The game machine speaker according to any one of claims 1 to 3.   5. The game machine speaker according to claim 1, a continuity detection circuit connected to the continuity detection terminal, a control circuit connected to an output terminal of the continuity detection circuit, and the game machine speaker. And an insulating member sandwiched between the fixed mounting portions of the game machine, wherein the conductive layer of the diaphragm and the front panel are in an insulating state in which the gasket and the insulating member do not conduct electricity. Machine.