JP2004167155A - Acoustic device for game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic device having a wide regenerative frequency band and capable of reproducing a stereoscopic effective sound rich in presence in a game machine of which a location space is limited. <P>SOLUTION: The acoustic device for the game machine is provided with: a front sound chamber 55 for preventing the effective sound generated forwards from a loudspeaker 41 from being diffused from side to side; a rear sound chamber 53 for preventing the effective sound generated backwards from the loudspeaker 41 from being diffused; a duct 44 communicating the front sound chamber 55 and the rear sound chamber 53; a front derivation path 56 guiding the effective sound generated in the front chamber 55 to the front side of the game machine and forwards injecting the sound; and a lower derivation path 57 for guiding the effective sound generated in the front chamber 55 to the downside of the game machine and injecting the sound downwards. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an audio device for a gaming machine including a speaker that generates a sound effect according to a game development situation.
[0002]
[Prior art]
Pachinko machines, arranged ball machines, sparrow ball game machines, and the like are provided as gaming machines equipped with the above-described sound device. In a pachinko machine, which is a representative example of this type of gaming machine, a speaker is mounted at a required position on an upper ball tray or a board called a game auxiliary board located behind the bowl, so that a game development situation and occurrence of troubles occur. It is configured to generate sound effects such as music and voices of various timbres according to the situation (for example, see Patent Documents 1 and 2).
[0003]
[Patent Document 1]
JP-A-4-208181 (page 5-7, FIG. 1-3)
[Patent Document 2]
JP-A-6-23098 (pages 9-11, FIG. 3-FIG. 5)
[0004]
[Problems to be solved by the invention]
However, in conventional gaming machines, visual effects such as image display devices and lamps are emphasized, while the evaluation of auditory effects such as sound effects is low. In a simple form, a small speaker is attached to an empty space in the upper bowl and the game auxiliary board, and can be directly emitted to the player in front through the guard grille integrally molded with the upper bowl. Was something. For this reason, the conventional sound effects are only poor enough to sound a speaker, and there is a problem that it is difficult to form a sound field space that excites game development.
[0005]
In general, various components of a game machine for launching game balls one by one are arranged on an upper ball plate or a game auxiliary board to which a speaker is attached, so that a rich sound field can be obtained in a limited space. It has been considered difficult to provide an acoustic device that can form a space.
[0006]
The present invention has been made in view of the above-described problems, and has as its object to provide an acoustic device capable of forming a three-dimensional sound field space with a sense of realism using a single speaker.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention relates to a gaming machine provided with a speaker that generates a sound effect according to a game development situation. And a rear sound chamber formed behind the speaker to prevent sound effects generated from the speaker from being diffused (for example, the speaker housing 51 and the speaker housing 51 in the embodiment). A rear sound chamber 53), a duct connecting the front sound chamber and the rear sound chamber, and a front sound deriving path (for example, an implementation) that guides sound effects emitted to the front sound chamber to the front of the gaming machine and emits the sound forward. And a lower sound derivation path (for example, the lower derivation path 57 in the embodiment) for guiding the sound effect emitted to the front sound chamber below the gaming machine and emitting it downward. It constitutes an acoustic device of the gaming machine Te.
[0008]
According to the acoustic device having such a configuration, the rear sound chamber is formed behind the speaker, and is connected to the front sound chamber formed in front of the speaker by a duct. That is, the rear sound chamber formed on the rear side of the speaker forms an enclosure, and a duct provided in the enclosure constitutes a bass reflex speaker. Also, required game components can be attached to the front wall surface of the enclosure, which is lined with the front surface of the speaker, as necessary. As a result, it is possible to provide an audio device that has a wide reproduction frequency band and can reproduce realistic sound effects, compared to a conventional audio device that can reproduce only a high-pitched reproduction sound due to the emphasis on the mid-high range. it can.
[0009]
Also, the sound effect emitted to the front sound chamber during the game in this way is such that the sound effect guided through the front sound lead-out path is emitted forward from the ball plate structure, and the sound effect guided through the lower sound lead path is the ball plate sound. Injected downward from the structure. For this reason, it can be expected to form a three-dimensional sound field space that expands in the vertical direction with sound effects full of presence. Generally, a table on which a ball storage box is placed is provided below the ball dish structure (in front of the curtain plate), and sound effects emitted downward from the ball dish structure are sent to this table. The light is reflected or irregularly reflected by the game balls stored in the ball storage box to form a more three-dimensional and complex sound field. Therefore, according to the present configuration, it is possible to provide an acoustic device capable of forming a complex sound field space with a sense of realism with one speaker.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings by way of preferred examples. In the embodiment, a case will be mainly described in which the present invention is applied to a pachinko machine in which a game board is accommodated and held in a front deep portion of a front frame.
[0011]
First, a schematic configuration of the pachinko machine PM of the present embodiment will be briefly described with reference to FIGS. 1 to 3. Here, FIG. 1 is a front view of the pachinko machine PM, FIG. 2 is a rear view of the pachinko machine PM, and FIG. 3 is a front view of the pachinko machine PM in a state where the glass door 5 and the bowl 6 are opened and the game board 10 is removed. FIG.
[0012]
The pachinko machine PM is configured to have an outer rectangular frame size and forms a vertically-oriented fixed holding frame on the front of an opening of an outer frame 1, and a rectangular frame size corresponding to this is provided with a front frame 2 for opening / closing and mounting. A hinge mechanism 3a, 3b disposed on the upper and lower left side allows the door to be opened and closed and attached and detached, and is always engaged with the outer frame 1 using a locking device 4 called a double lock provided on the right front side. The combined closed state is maintained.
[0013]
On the front side of the front frame 2, a rectangular glass door 5 and a bowl 6 adapted to the front area of the front frame 2 are opened and closed by using hinge mechanisms 7 a, 7 b, 7 c provided on the front left side. It is detachably assembled, and is held in a closed state covering the front surface of the front frame 2 by a locking device 4 on the front right side and a lock mechanism not shown in detail. An operation handle 8 for performing a shooting operation of a game ball is attached to a lower right portion of the ball tray 6. The upper portion of the front frame 2 is rectangular frame-like housing frame 2a is recessed, a plurality of levers L _1, L 1 _... set to removably game board 10 by using a provided in the housing frame 2a The game area PA in front of the player is positioned behind the glass door 5 which is held and always closed and faces the player.
[0014]
On the back side of the front frame 2, there are provided a plurality of back set boards 30 having a window communicating with the front and rear at the center and formed in a rectangular frame shape slightly smaller than the front frame 2, provided on the back surface of the front frame 2. Are held in a detachable manner using the levers L ₂ , L ₂ . Each part of the back set board 30 is equipped with a prize ball device such as a ball storage tank 31 for storing game balls, a tank rail 32, an alignment waiting passage 33, a prize ball cassette 34, a prize ball discharge passage 35, and the like, and a back surface part. Various circuit boards such as a power supply board 37 and a main control board 38, electronic components, and the like are attached to the power supply board 37 and the main control board 38, and these devices and the image control board 18 attached to the back of the game board 10 are connected by a wire harness (not shown). I have.
[0015]
An auxiliary mechanism section called a game auxiliary board is formed in a lower region of the front frame 2 located below the housing frame 2a. Each part of the game auxiliary board 20 includes a hitting ball firing device 21, a back set board. A storage cassette 25 that is connected to the prize ball discharge passage 35 on the side 30 and temporarily stores game balls that cannot be discharged to the ball tray 6, a frame-side shutter mechanism 27 provided at an outlet of the storage cassette 25, an acoustic device 40 described in detail later, and the like. Is provided.
[0016]
The pachinko machine PM is provided for a game with the front frame 2, the glass door 5, and the ball tray 6 closed and locked together, and the game ball is stored in the ball tray 6, and the operation handle 8 is rotated to operate. The game is started. When the operation handle 8 is rotated, the game balls stored in the ball tray 6 are launched one by one into the game area PA of the game board 10 by the hit ball launching device 21, and the pachinko game is developed thereafter.
[0017]
In the pachinko machine PM schematically configured as described above, the acoustic device 40 is provided on the game auxiliary panel 20 and the ball plate 6 covering the front thereof.
[0018]
Hereinafter, with reference to FIGS. 4 to 9, the configurations of the game auxiliary board 20 and the ball tray 6 will be described first. Here, FIG. 4 is a plan sectional view of the pachinko machine PM viewed in the direction of arrow IV-IV in FIG. 1, FIG. 5 is a front view of the game auxiliary board 20 with the ball tray 6 removed, and FIG. FIG. 7 is a front view of the ball tray 6, FIG. 8 is a rear view of the ball tray 6, and FIG. FIG. 2 is a rear view schematically showing the internal structure of the device.
[0019]
A hit ball launching device 21 is attached to a lower left portion of the game auxiliary board 20. The hit ball launching device 21 is unitized, and a rotary solenoid 21a and its control circuit are mounted on the back side of a base plate serving as a substrate, and a hammer 21b, cushion rubbers 21c and 21d, a firing ball holder 21e, and the like are mounted on a front side. A screw is fixed to the lower left portion of the game assistance panel 20 from the back side of the front frame 2.
[0020]
On the upper left portion of the game assisting panel 20, a firing rail 22 for guiding the game ball hit by the hitting ball firing device 21 to the game board 10 is provided, and the left and right of the upper end opening of the firing rail 22 cannot reach the game area PA. A foul ball collection path 23 is formed for collecting the foul balls returned to the foul ball.
[0021]
The upper part of the game assistance board 20 has a cassette housing portion 24 having a recessed sectional view formed by projecting the board surface rearward, and FIG. 13 showing a cross section taken along the arrow XIII-XIII in FIG. 5 and XV− in FIG. The storage cassette 25 is stored in the cassette storage section 24 (see FIG. 15 showing a cross section taken along the arrow XV). The storage cassette 25 is formed into a box-like body having a bottom slope by processing and molding a transparent resin material, and is connected to the above-described foul ball collection path 23 through a foul ball collection port 23 that opens on the left side, and opens on the upper left side. The prize ball receiving port is connected to the prize ball discharge passage 35 of the back-set board, and further connected to the closed outlet 61a of the ball plate 6 in the closed state at the ball outlet 25a opened to the right front surface, and the ball plate 6 is completely discharged. No game balls are configured to be temporarily stored. The storage cassette 25 is locked and held in a set state accommodated in the cassette accommodating section 24 by a lock lever 26 provided in the shutter mechanism attaching section 28 so as to be slidable in the vertical direction (XI to arrow in FIG. 5). FIG. 11 and FIG. 15 each showing a sectional view).
[0022]
On the right side of the game assistance panel 20, a frame-side shutter mechanism 27 is provided in alignment with the ball outlet 25a of the storage cassette 25. The frame-side shutter mechanism 27 includes a frame-side shutter blade 27a that moves up and down in conjunction with the opening and closing operation of the ball plate 6, and when the ball plate 6 is opened horizontally, the frame-side shutter blade 27a is turned on in FIG. As shown by a two-dot chain line, the ball rises up and closes the ball outlet 25a of the storage cassette, so that the game balls stored in the storage cassette 25 do not fall out.
[0023]
On the other hand, the ball tray 6, which is always closed and held over the front surface of the game assisting panel 20, has a support plate 61 serving as a base plate of this structure, a plate member 62 for storing game balls, and is formed by projecting forward and supporting plate. Outer cover bodies 63 and 64 covering the front of the dish member 61 and the plate member 62, a passage member 65 provided inside the ball dish between the backing plate and the outer cover body, and the like are main structural members, and various mechanical devices are provided in each part. Equipped and configured.
[0024]
On the back surface of the abutment plate 61 facing the game assistance panel 20, a mechanism device corresponding to each mechanism on the game assistance panel side is provided. That is, a ball feed cassette 71 is provided corresponding to the hit ball firing device 21, a storage cassette see-through window 75 is provided corresponding to the storage cassette 25, and a ball plate side shutter mechanism 77 is provided corresponding to the frame side shutter mechanism 27. ing.
[0025]
The ball feed cassette 71 is disposed immediately before the hitting ball launching device 21 in the closed position of the ball tray 6 as indicated by a two-dot chain line in FIG. A guide passage 72 for aligning the game balls stored in the ball dish portion in a row and guiding the ball to the ball feed cassette 71 is formed in the dish member 62, and the game balls that are waiting to be aligned in the guide passage 72 are always arranged. Is guided to the ball feed cassette 71 from a cassette entrance 72b opened above the second shutter 82b closed and held. The operation of the ball feeding cassette 71 is controlled in synchronization with the operation of the rotary solenoid 21a in the hitting ball firing device 21. Whenever a game ball is fired from the hitting ball firing device 21 based on the turning operation of the operation handle 8, the ball feeding cassette 71 is activated. The game balls are sent out to the shooting ball holder 21e one by one.
[0026]
The storage cassette see-through window 75 is provided immediately before the storage cassette 25 set and held on the game auxiliary board 20 in the closed position of the ball tray 6 (see also FIGS. 13 and 15). The storage cassette see-through window 75 is integrally formed by a molding means such as injection molding using a transparent resin material, and is fixed from the back side of the contact plate 61 by fixing means such as screws. Thereby, the state inside the storage cassette 25 located behind the ball tray 6 can be confirmed from the front of the pachinko machine PM through the see-through window 75.
[0027]
The ball tray side shutter mechanism 77 is aligned with the ball outlet 25a of the storage cassette 25 when the ball tray 6 is in the closed position, and discharges the award balls and the like paid out through the storage cassette 25 to the plate member 62 through the outlet 61a. It is provided in. The bowl-side shutter mechanism 77 includes a bowl-side shutter blade 77a that moves up and down in conjunction with the opening and closing operation of the bowl-plate 6, and the bowl-side shutter blade 77a rises when the bowl 6 is opened horizontally. Thus, the game outlet stored in the plate member 62 is prevented from spilling behind the ball plate 6. That is, the above-described frame side shutter mechanism 27 and ball tray side shutter mechanism 77 are disposed with their respective shutter blades 27a and 77a facing each other, and both of them move up and down in conjunction with opening and closing of the bowl 6. Thus, even if the ball tray is opened and closed in a state where the game balls are stored in the storage cassette 25 or the ball tray 6, the game balls are not spilled.
[0028]
Inside the bowl 6, a ball removing mechanism for collecting game balls stored in the bowl member 62 is provided. The ball removing mechanism discharges the game balls stored in the dish member 62 in a short time, and discharges the game balls remaining in the guide passage 72 mainly after the ball is removed by the first ball removing mechanism 81. And a second ball removing mechanism 82.
[0029]
The first ball punching mechanism 81 is formed on the upper surface of the dish member 62 and has a ball punching hole 62b of about 3 cm in diameter. The ball pulling hole 62b is swingably opened and closed. The first shutter 81b held in force, the first ball release path 73 formed immediately below the first shutter 81b, the first ball release button 81a for opening and closing the first shutter, and the first The game balls connected to the ball pull-out path 73 and having an opening at the right side in rear view are connected to the second ball pull-out paths 74 described below, and the game balls discharged to these ball pull-out paths 73 and 74 are placed on the lower surface of the ball tray 6. It mainly includes a passage member 65 and the like in which a lower outlet path 57 leading to an outlet opening 59 formed in the center is formed.
[0030]
On the other hand, the second ball removing mechanism is provided on the downstream side of the guide passage 72, is folded in a V shape below the cassette entrance 72b in the guide passage 72, and is connected to the lower lead-out passage 57 at the downstream end junction 74b. A second ball emptying path 74, which is connected between the guide path 72 and the second ball emptying path 74, is swingably opened and closed. The communication between the two paths is always interrupted to allow game balls in the guide path 72 to enter the cassette entrance. A second shutter 82b for guiding to the second shutter 72b, a second ball release button 82a for opening and closing the second shutter, a passage member 65 described above, and the like are mainly constituted.
[0031]
The first ball release button 81a and the second ball release button 82a are both provided adjacent to the front of the bowl, and when the first ball release button 81a is pressed in against the urging force, the first shutter 81b is opened. The ball extraction port 62b is opened after swinging, and the game balls stored in the dish member 62 flow down the first ball extraction path 73 and the lower lead-out path 57, and are discharged from the exit opening 59 on the lower surface of the ball dish. . When the second ball release button 82a is pressed against the urging force, the second shutter 82b swings and retreats, and the guide passage 72 and the second ball release passage 74 communicate with each other. The sphere flows down the second bleed path 74 and the lower outlet path 57 and is discharged from the outlet opening 59. For this reason, the player places the ball storage box on the table installed on the game island and presses the first ball-pulling button 81a, and also presses the second ball-pulling button 82a, so that the ball tray is pressed. The entire game balls stored in 6 can be discharged.
[0032]
In addition, a passage opening is formed in the backing plate 61 in accordance with the passage shape of the lower lead-out passage 57 formed in the passage member 65, and a passage cover 66 is attached to cover the passage opening so as to be swingably openable and closable. ing. Thereby, cleaning and maintenance of the lower lead-out path 57 including the first ball pull-out path 73, or a ball-pulling-out procedure when a game ball is clogged in the lower lead-out path 57 can be easily performed. The passage cover 66 is always kept in a closed state by engagement of a lock claw 66c formed on the passage cover 66 with a locking slit formed on the abutment plate 61 (see FIG. 12).
[0033]
Now, in the game assisting panel 20 and the bowl 6 configured as described above, an acoustic device 40 is provided substantially at the center of each. Hereinafter, the acoustic device 40 will be described with reference to FIGS. 10 to 19.
[0034]
Here, FIG. 10 is a rear view showing a central portion of the ball dish 6 in an enlarged manner, FIG. 11 is a plan sectional view mainly showing the structure of the audio device on the game auxiliary board side as viewed in the directions indicated by arrows XI in FIG. FIG. 12 is a plan sectional view showing the structure of the sound device on the ball tray side as viewed in the direction of arrows XII-XII in FIG. 8, and FIG. 13 is the sound device on the game auxiliary board side as viewed in the direction XIII-XIII in FIG. 14 is a side cross-sectional view mainly showing the structure of FIG. 8, FIG. 14 is a side cross-sectional view of the ball plate 6 viewed in the direction of the arrow XIV-XIV in FIG. 8, and FIG. 15 is a game auxiliary board viewed in the direction of the arrow XV-XV in FIG. FIG. 16 is a side cross-sectional view mainly showing the structure of the acoustic device on the side, and FIG. 16 is a side cross-sectional view of the bowl 6 viewed in the direction of the arrows XVI-XVI in FIG.
[0035]
17 to 19 each show a speaker assembly that is a sub-assembly in which the speaker 41 is screw-fixed to the speaker base 42, and FIG. 17 is a front view of the speaker assembly. FIG. 18 is a plan view (partial cross-sectional view) of the speaker assembly, and FIG. 19 is a side cross-sectional view along arrow XIX-XIX in FIG.
[0036]
Note that the cross-sectional views of FIGS. 11 to 16 are described so that the cross-sectional positions of FIGS. 13 and 14 match and the cross-sectional positions of FIGS. 15 and 16 match, and a pair of cross-sectional views ( FIG. 13 and FIG. 14, and FIG. 15 and FIG. In addition, FIG. 12 which is a plan sectional view on the ball tray side is displayed in the front-rear direction for easy comparison with the corresponding plan sectional view on the game board side shown in FIG. Hereinafter, with reference to these drawings, the sound structure of the sound device 40 on the game auxiliary board 20 side will be described first.
[0037]
The sound structure of the game auxiliary board 20 includes a speaker 41, a speaker base 42 on which the speaker 41 is mounted and a speaker accommodating chamber 51 is formed, and an enclosure cover 43 which is attached adjacent to the speaker accommodating chamber 51 and forms a rear sound chamber 53. And a duct 44 for exhibiting a bass reflex effect.
The central part of the game assisting board 20 is formed by bulging the board surface backward like the cassette accommodating part 24 (see FIG. 13), and the hitting ball firing device 21 on the front left side, the upper casset accommodating part 24 on the right side, and the right side And a speaker housing portion 29 that is recessed so as to be surrounded by the lower edge of the lower front frame. Then, the speaker 41 is attached to the speaker housing 29 via the speaker base 42.
[0039]
As shown in FIGS. 17 to 19, the speaker base 42 mainly includes a baffle plate 421 for mounting the speaker 41 and a side cover 422 that covers the left side of the speaker 41, and has a substantially L-shape in plan view. It is integrally molded. At the center of the front of the baffle plate 421, a circular opening communicating this plate surface back and forth is formed, and a screw receiving boss 423 for screwing the speaker 41 in alignment with a fixing hole of the speaker frame is formed around the opening. Is formed.
[0040]
The speaker 41 is a so-called cone-type speaker unit, and includes a speaker frame, a cone as a diaphragm, a voice coil for driving the cone, a magnet, and the like, which form a framework of the unit. A flat flange portion is formed in front of the speaker frame so as to surround the outer periphery of the cone edge, and a fixing hole for fixing the speaker 41 is formed in the flange portion.
[0041]
The speaker 41 has a flange portion supported on the peripheral edge of the circular opening from the back side of the baffle plate 421, the fixing holes of the speaker frame are aligned with the screw receiving bosses 423, and the screws are screwed and fastened from behind to make the speaker base 42. And the front of the cone faces the front of the baffle plate 421 through the circular opening. Note that, in the speaker frame located behind the cone, many openings are actually formed and the back of the cone is also exposed behind the speaker frame, but the illustration of this opening is omitted in each figure. .
[0042]
The lower end of the baffle plate 421 extends downward to form a locking side 424, and is capable of engaging and disengaging with a locking slit 29 a formed to extend left and right below the speaker housing 29. A locking hook portion 425 and a screw boss fitting portion 426 are formed above the baffle plate 421, and are formed above the speaker housing portion 29 (projections between the cassette housing portion 24 and the speaker housing portion 29). The speaker base 42 can be positioned and locked to the speaker housing 29 by removably engaging with the hook engaging portion 29b and the screw boss 29c.
[0043]
The baffle plate 421 engages the locking side portion 424 with the locking slit 29a, and fits the locking hook portion 425 and the screw boss fitting portion 426 with the hook engaging portion 29b and the screw boss 29c, respectively. When the plate is locked, the center of the plate portion is disposed at substantially the same front-rear position as the front surface of the shutter mechanism mounting portion 28, and the locking side is positioned so that the plate surface is inclined forward by a predetermined angle. It is formed in an angular positional relationship that is relatively inclined with respect to the part 424, the locking hook part 425, and the like. Thereby, the speaker 41 attached to the baffle plate 421 is disposed downward at a predetermined angle, and the sound effect emitted forward from the cone is efficiently radiated from the outlet opening through the lower lead-out path 57. I have.
[0044]
In addition, a cover retainer 427 that protrudes forward is formed by bulging and molding at a lower portion on the right side of the baffle plate 421. On the front surface of the cover retainer 427, there is formed a pressing piece 427a that can be elastically displaced back and forth by separating the left, right and lower sides. The cover retainer 427 is formed so as to be aligned with the upper area of the lock claw 66c of the passage cover 66 attached to the ball dish 6, and when the ball dish 6 is closed, the pressing piece 427a of the passage cover 66 The passage cover 66 is elastically pressed by engaging with the rear surface, and the passage cover 66 is kept closed. Thereby, it is possible to prevent a fraudulent act such as inserting a cell, a piano wire, a bar or the like from the outlet opening 59 and pushing the passage cover 66 open.
[0045]
The side cover 422 extends rearward from the baffle plate 421 so as to cover the left side and a part of the upper side of the speaker 41 fixed to the baffle plate 421. As described above, the position and the shape of the side cover 422 are such that the speaker base 42 is locked when the locking side 424, the locking hook 425, and the screw boss fitting 426 are engaged with each other to lock the speaker base 42. The speaker housing 29 is formed so as to be aligned with the surrounding wall surface, and functions as a partition wall forming the left side wall of the speaker housing 29.
[0046]
The speaker assembly engages the locking side portion 424 of the speaker base 42 with the locking slit 29 a of the speaker housing portion 29, and connects the locking hook portion 425 and the screw boss fitting portion 426 of the speaker base 42 to the speaker housing portion 29, respectively. It is fitted and connected to the hook engaging portion 29b and the screw boss 29c, and a screw is inserted into the screw boss fitting portion 426 from the front side of the baffle plate 421 and tightened into the screw boss 29c, thereby being detachably fixed and held in the speaker housing portion 29. Is done. When the speaker assembly is fixed and held in this way, a speaker accommodating chamber 51 surrounded by a wall surface is formed behind the speaker 41.
[0047]
A rear sound chamber 53 is formed adjacent to the speaker housing chamber 51. The rear sound chamber 53 mainly includes an enclosure cover 43 attached to the back of the shutter mechanism attaching portion 28, and is formed behind the lock lever 26 and the frame side shutter mechanism 27 in the game auxiliary panel 20. As shown in FIGS. 6 and 11, the enclosure cover 43 has a depth substantially the same as that of the speaker housing 29, and is formed of a lid-like body extending left and right without a side wall on the side in contact with the speaker housing 51. The locking projection 43a formed on the lower portion and the sliding projection 43b formed on the front edge of the lower wall are locked to the speaker housing portion 29 and the shutter mechanism mounting portion 28, respectively. Removably attached to.
[0048]
An opening 52 is formed in a wall surface of the speaker housing portion 29 between the speaker housing room 51 and the rear sound chamber 53 (see FIG. 15), and the speaker housing room 51 and the rear sound room 53 are formed by the opening 52. A large-volume enclosure (speaker box) in which the internal volumes of these two chambers are combined by communication is formed. Inside the rear sound chamber 53, a cylindrical duct 44 protruding rearward from the shutter mechanism mounting portion 28 is formed by integral molding, and a front end thereof opens to the front surface of the shutter mechanism mounting portion 28 to form a port 44p. I have. As a result, a full-fledged bass-reflex speaker capable of exhibiting an original bass-reflex effect in which the reproduction frequency band is expanded, and in particular, the frequency characteristics of the bass range is expanded, is formed.
[0049]
Here, the design of the bass reflex type speaker is basically performed based on a well-known acoustic engineering design method, and specifically, the effective vibration radius of the speaker unit 41, the effective mass of the vibration system, the stiffness of the cone, and the like. Is used as a basic parameter, and these are substituted into a known calculation formula to calculate the volume of the enclosure, the opening area of the port 44p, the length of the duct 44, and the like. Further, detailed tuning is performed for each part based on the frequency characteristics of the reproduced sound. Has been given.
[0050]
By providing the speaker accommodating portion 29 in the center of the game auxiliary panel 20 and disposing the speaker 41 in this manner, a large-sized speaker having an aperture (effective vibration radius) 1.5 to 2 times as large as the conventional one can be obtained. The sound effect can be reproduced in a wide frequency band. Further, by forming a large enclosure extending substantially to the left and right with a depth substantially equal to that of the speaker accommodating chamber 51 on the back side of the game auxiliary board 20, a full-scale bass reflex provided with an enclosure having a necessary and sufficient volume is provided. This makes it possible to construct a type-type speaker, thereby reproducing a low-frequency range that cannot be obtained by simply enlarging the speaker diameter and reproducing a realistic sound effect over a wide band.
[0051]
Note that the speaker base 42, the enclosure cover 43, the duct 44, and the like can be appropriately changed according to the aperture of the speaker 41 used and the frequency characteristic to be reproduced. For example, the speaker base may be configured so as to cover the whole of the recessed speaker accommodating portion 29 by connecting the hitting ball launching device 21 and the shutter mounting portion 28, and to adjust the volume of the enclosure. The enclosure volume may be enlarged or reduced by changing the shape of the enclosure cover 43 in which the portion is formed obliquely, or by providing a partition wall inside. Further, with respect to the duct 44, the opening diameter and length of the port 44p can be appropriately changed in accordance with the above change, and the duct 44 can be configured to be detachable from the shutter mechanism mounting portion 28. Therefore, for example, while using different speakers for each pachinko machine type, it is possible to easily construct an acoustic device optimized for each of them.
[0052]
On the other hand, the acoustic structure on the ball tray side is formed by projecting rearward from the support plate 61 to form the front sound chamber 55 to form the front sound chamber 55, and is formed by projecting rearward from the outer cover body 63 to form the front lead-out path 56. The main components are a front outlet wall 46 (46a, 46b, 46c), and a passage member 65 that also serves as a discharge path for the ball removing mechanisms 81, 82 and forms a lower outlet path 57.
[0053]
The front sound chamber wall 45 includes continuous rib-shaped wall surfaces 45 a, 45 b, 45 c, 45 d, 45 e, 45 f, 45 g, etc., which are formed integrally and project rearward from the backing plate 61, and extend from the circular opening area of the baffle plate 421. A front sound chamber 55 is formed between the game auxiliary panel 20 and the abutment plate 61 around the outer periphery of the opening area of the port 44p, and the sound effect emitted forward from the cone of the speaker 41 and the port 44p of the duct 44 Prevents sound effects emitted forward from diffusing up and down or left and right. Further, the front sound chamber wall 45 is a fraud prevention wall for preventing a fraudulent act of mischievous playing on components such as the game auxiliary panel 20 and the game panel 10 by inserting a cell or a piano wire from an outlet opening 59 or an acoustic grill 58 described later. Also works as.
[0054]
In the front sound chamber 55 surrounded in the above manner, a front outlet 61h penetrating back and forth is provided on the plate surface of the backing plate 61 located in front of the port 44p, and is surrounded by the front outlet wall 46. Connected to the leading outflow path 56. The front lead-out wall 46 is composed of integrally formed wall surfaces 46 a, 46 b, 46 c and the like protruding rearward from the outer cover body 63, and guides sound effects forward of the ball dish 6 by these wall surfaces and the side wall surfaces of the passage member 65. The front lead-out path 56 is formed. For this reason, among the sound effects emitted to the front sound chamber 55, the low-range sound effect mainly emitted from the port 44p is efficiently guided forward through the front outlet 61h and the front outlet path 56, and The sound is emitted to the front of the pachinko machine from a louver-shaped acoustic grill 58 formed on the front surface of the cover body 63.
[0055]
On the other hand, in front of the speaker 41, the converging / falling portion of the above-described lower lead-out path 57 is located, and in front of the speaker 41, a merging cover portion of the passage cover 66 covering the merging / falling portion is located. . The merging cover portion is provided with a large number of small-diameter through-holes 66h penetrating the cover surface, and is configured to transmit sound effects to the front lower lead-out path 57 across the cover surface. As shown in a side sectional view of this region in FIG. 14, the merging and descending portion in the lower outlet path 57 includes a ceiling surface 65 s of a passage member 65 extending diagonally downward, and a bulging surface projecting diagonally downward from the abutment plate 61. 61s, it extends forward and extends vertically forward and is connected to an outlet opening 59 formed in the center of the lower surface of the bowl 6.
[0056]
Here, as described above, the baffle plate 421 of the speaker base 42 is inclined downward, and the speaker 41 is disposed in a downward posture inclined forward by a predetermined angle. The inclination angle of the lower passage 57 is set to be the same as or greater than the inclination angle of the speaker 41.
[0057]
For this reason, of the sound effects emitted to the front sound chamber 55, the sound effects in the mid-high range mainly emitted obliquely downward from the speaker 41 are emitted to the lower lead-out path 57 through a number of through holes 66h. The light is efficiently guided downward without repeating multiple front reflections in the lower lead-out path 57, and emitted downward from an outlet opening 59 formed on the lower surface of the bowl 6.
[0058]
Therefore, in the pachinko machine PM equipped with such an audio device 40, a full-fledged bass reflex type speaker is configured using the back of the game auxiliary panel 20 to reproduce realistic sound effects over a wide frequency band. At the same time, the sound effect mainly in the low frequency range is guided to the front outgoing path 56 and emitted from the acoustic grill 58 in front of the ball tray to the front of the pachinko machine, and the sound effect mainly in the middle and high range is guided to the lower outgoing path 57. It is discharged downward from the outlet opening 59 on the lower surface of the bowl. For this reason, it is possible to form a three-dimensional sound field space that extends vertically, with sound effects that vary in directivity depending on the reproduction sound range while overflowing with a sense of reality.
[0059]
The sound effect emitted downward from the outlet opening 59 is reflected on a game island table generally provided below the ball tray 6 (in front of the curtain plate), or a ball storage box placed on this table. It is irregularly reflected by the game balls inside to form a more three-dimensional and complex sound field. Therefore, according to this configuration, it is possible to form a complex and rich sound field space that is full of a sense of reality with one speaker.
[0060]
In the above-described embodiment, the passage cover 66 is provided with a large number of small-diameter through-holes 66 to share the ball extraction path and the lower sound output path, thereby forming a complicated sound field space with a simple and low-cost configuration. Although the example in which the opening is performed is disclosed, a grid or a mesh may be used instead of the through-hole 66h as long as an illegal action can be prevented. In addition, the ceiling surface 65s of the ball passage member 65 in the downward lead-out path 57 sets the inclination angle of this surface to a further larger value as long as it does not hinder the flow of the game ball from the first ball extraction path 73, or sets a predetermined curvature. The sound effect emitted from the speaker 41 may be more efficiently reflected to the outlet opening 59 by forming the sound effect into a rounded shape.
[0061]
【The invention's effect】
As described above, the present invention relates to a gaming machine provided with a speaker that generates a sound effect according to the development state of a game. A front sound chamber that prevents the sound from being diffused to the front, a rear sound chamber that is formed behind the speaker to prevent sound effects generated from the speaker from being diffused, and the front sound chamber and the rear sound chamber communicate with each other. Duct, a front sound derivation path that guides the sound effect emitted to the front sound chamber to the front of the gaming machine and emits the sound forward, and a sound effect emitted to the front sound chamber downwards by guiding the sound effect downward to the game machine. A sound device for a gaming machine is provided with a lower sound deriving path to be emitted.
[0062]
According to the above configuration, the rear sound chamber formed on the rear side of the speaker and the front sound chamber formed in front of the speaker are connected by a duct to form a bass reflex speaker, which is emitted to the front sound chamber during a game. The sound effect having a wide frequency band is emitted from the ball dish structure in two directions, forward and downward. For this reason, it can be expected to form a three-dimensional sound field space that expands in the vertical direction with sound effects full of presence. Also, it is possible to mount required game components on the front wall surface of the enclosure which is aligned with the front surface of the speaker. Further, the sound effect emitted downward from the ball plate structure is reflected on the table of the game island, or is irregularly reflected on the game ball in the ball storage box placed on the table, resulting in a more three-dimensional and complex sound. Form a place. Therefore, according to the present invention, it is possible to provide an audio device capable of forming a complex sound field space having a wide reproduction frequency band with a single sound source even in a gaming machine having a limited arrangement space.
[Brief description of the drawings]
FIG. 1 is a front view of a pachinko machine shown as an example of a gaming machine provided with an audio device according to the present invention.
FIG. 2 is a rear view of the pachinko machine.
FIG. 3 is a front view of the pachinko machine in a state where a glass door and a ball dish are opened and a game board is removed.
FIG. 4 is a plan sectional view of the pachinko machine as viewed in the direction of arrows IV-IV in FIG.
FIG. 5 is a front view of the game auxiliary board shown with the ball tray removed.
FIG. 6 is a rear view of the game auxiliary board as viewed from the back side of a front frame.
FIG. 7 is a front view of a ball dish.
FIG. 8 is a rear view of the ball dish.
FIG. 9 is a rear view schematically showing the internal structure of the ball dish with the backing plate removed.
FIG. 10 is an enlarged rear view showing a central portion of the ball tray.
11 is a cross-sectional plan view mainly showing the structure of the sound device on the game assistance board side as viewed in the directions indicated by arrows XI in FIG.
FIG. 12 is a plan sectional view showing the structure of the acoustic device on the ball tray side as viewed in the direction of arrows XII-XII in FIG. 8;
13 is a side cross-sectional view mainly showing the structure of the sound device on the game auxiliary board side as viewed in the XIII-XIII direction in FIG. 5; FIG. 14 is a side view of the ball dish as viewed in the direction of arrows XIV-XIV in FIG. It is sectional drawing.
15 is a side cross-sectional view mainly showing the structure of the sound device on the game auxiliary board side as viewed in the direction of arrows XV-XV in FIG. 5;
FIG. 16 is a side sectional view of the ball dish as viewed in the direction of arrows XVI-XVI in FIG. 8;
FIG. 17 is a front view of the speaker assembly.
FIG. 18 is a plan view (partial sectional view) of the speaker assembly.
FIG. 19 is a side sectional view taken along arrows XIX-XIX in FIG. 17;
[Explanation of symbols]
PA game area PM pachinko machine L ₁ lever L ₂ lever 1 outer frame 2 front frame (2a storage frame)
3a, 3b hinge mechanism 4 locking device 5 glass door 6 ball tray 7a, 7b, 7c hinge mechanism 8 operation handle 10 game board 18 image control board 20 game auxiliary board 21 hitting and firing device (21a rotary solenoid, 21b hammer,
21c, 21d cushion rubber, 21e firing ball holder)
22 firing rail 23 foul ball collection path 24 cassette accommodating section 25 storage cassette 26 lock lever 27 frame side shutter mechanism (27a frame side shutter blade)
28 Shutter mechanism mounting part 29 Speaker housing part (29a locking slit, 29b hook engaging part,
29c screw boss)
30 back set board 31 ball storage tank 32 tank rail 33 alignment waiting passage 34 prize ball cassette 35 prize ball discharge passage 37 power supply board 38 main control board 40 sound device 41 speaker 42 speaker base 43 enclosure cover (43a locking projection, 43b slide) Protrusion)
44 duct (44p port)
45 Front sound chamber wall (45a-45g wall surface)
46 Front exit wall (46a-46c wall surface)
48 mounting screw 51 speaker accommodating chamber 52 opening 53 rear sound chamber 55 front sound chamber 56 front outlet path 57 lower outlet path 58 acoustic grill 59 outlet opening 61 backing plate (61h front outlet, 61s bulging surface)
62 plate member (62b ball opening)
63 Outer cover body 64 Outer cover body 65 Passage member (65s ceiling surface)
66 passage cover (66c lock claw, 66h through hole)
71 Ball feed cassette 72 Guide passage (72b cassette entrance)
73 First ball emptying path 74 Second ball emptying path (74b junction)
75 Storage cassette see-through window 77 Ball dish side shutter mechanism (77a dish side shutter blade)
81 first ball release mechanism (81a first ball release button, 81b first shutter)
82 second ball release mechanism (82a second ball release button, 82b second shutter)
421 Baffle plate 422 Side cover 423 Screw receiving boss 424 Locking side 425 Locking hook 426 Screw boss fitting 427 Cover holding (427a pressing piece)

Claims (1)

An audio device for a gaming machine having a speaker that generates a sound effect according to a game development situation,
A front sound chamber formed in front of the speaker to prevent sound effects generated from the speaker from being diffused to the left and right sides;
A rear sound chamber formed behind the speaker to prevent sound effects generated from the speaker from being diffused;
A duct for communicating the front sound chamber and the rear sound chamber,
A front sound derivation path for guiding the sound effect emitted to the front sound chamber to the front of the gaming machine and emitting the sound forward, and guiding the sound effect emitted to the front sound chamber downward to the game machine and emitting the sound downward. A sound device for a gaming machine, comprising:

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