JP4512735B2 - Game machine - Google Patents

Description

  The present invention relates to a ball game machine such as a pachinko machine and a game machine such as a slot machine.

Conventionally, in this type of gaming machine, a speaker is mounted on the front side of the speaker box, and an air passage (one end of which communicates with the speaker box and the other end opens toward the front side of the gaming machine) The thing of the structure provided with the duct body (resonance body) which comprises a bass-reflex path | pass is known (for example, refer patent document 1).
That is, in the one disclosed in Patent Document 1, an extending plate portion is formed to extend downward at a lower portion of a middle frame (corresponding to a main body frame) assembled to be openable and closable on the front side of the outer frame. Yes.
The extension plate portion is formed with a speaker sound emission port and a bass reflex sound emission port, and a partition wall constituting an enclosure (corresponding to a speaker box) is provided on the back surface (rear surface) of the extension plate portion. ing.
Then, a speaker unit (corresponding to a speaker) is attached to the back surface of the extension plate portion in a state of being aligned with the speaker sound emission port.
On the other hand, a bass reflex duct (corresponding to a duct body) connected to a bass reflex sound emission port is formed so as to form a maze-like duct structure extended and refracted by a partition wall.
JP 2003-308744 A (page 4-9, FIG. 2)

By the way, in the bass reflex type speaker device having the structure as described above, the bass reflex duct is resonated by the sound wave of the reverse phase generated in the speaker box when the speaker is activated (vibration of the diaphragm). Sound in a sound range (for example, a low sound range) is enhanced.
In the bass reflex duct, the volume of the speaker box, the cross-sectional area and the length of the air passage of the bass reflex duct are set in accordance with numerical values obtained by a well-known calculation formula.
However, there are many cases where the sound in a specific sound range is not enhanced even though the cross-sectional area and length of the air passage of the bass reflex duct are formed corresponding to the numerical values obtained by a well-known calculation formula. This is due to differences in the shape, material, strength, thickness, etc. of the speaker box and bass reflex duct.
For this reason, in order to enhance the sound in a specific range with the bass reflex duct, it is necessary to produce a large number of prototypes and repeat the test.
In the invention disclosed in Patent Document 1, many speaker boxes (partition walls) integrally including bass reflex ducts having different cross-sectional areas and lengths of air passages are manufactured, and these are assembled to the back surface of the extension plate portion for testing. There is a problem that it has to be repeated and requires a lot of work and time.

  In view of the above problems, an object of the present invention is to provide a gaming machine having a speaker box structure that can easily obtain a speaker box including a duct body that resonates well with sound waves in a specific sound range.

In order to achieve the object, a gaming machine according to the invention of claim 1
"A game board in which a main body frame having an opening space that opens in front and rear is attached to the front side of the outer frame so as to be opened and closed by a hinge mechanism, and a game board is detachably fitted to the back side along the opening space of the main body frame A game board mounting body constituting the mounting frame is provided, and a mechanism mounting body for mounting the ball payout device is provided on the back side of the game board mounting body, while a speaker is formed in a speaker box formed at a lower portion of the main body frame. Is a gaming machine equipped with detachable storage from the front side,
The main body frame is integrally formed of synthetic resin in a state where the game board mounting body and the mechanism mounting body constituting the gaming board mounting frame are aligned in the front-rear direction, and at a lower front side than the opening space of the main body frame. Forming the main body frame with the box-shaped speaker box having a front opening for accommodating the speaker and the acoustic opening having a front opening for releasing the speaker sound in front left and right adjacent to each other at the front left part Sometimes it is integrally formed,
The speaker box is disposed at a position that is substantially flush with the upper wall, the lower wall, the left and right side walls, and the rear surface of the mechanism mounting body, with reference to the flat plate surface on the lower front side of the opening space of the body frame. An acoustic chamber of a rectangular space having a depth larger than the length in the front-rear direction of the speaker is defined in the interior surrounded by the peripheral wall with the rear wall, and a narrow vertical width is formed in a substantially front half of the right side wall. The opening that communicates with the acoustic chamber is partitioned and formed on the upper side and the lower edge of the narrow vertical opening of the right side wall, and is formed in a side-by-side direction as a duct mounting part. For the rail piece, a duct body for attaching the acoustic chamber and the opening to form an acoustic passage is attached,
The duct body is
A substantially semi-cylindrical main body part whose front part is closed and whose rear part is opened in a substantially U-shaped cross section that opens toward the right side wall of the speaker box;
A flat plate-like front support piece extending forward by a predetermined length from the closed front portion of the main body,
A rear support piece extending rearward of the opened rear portion of the main body, and
A slide piece protruding from the upper and lower outer edges of the main body part and the front support piece,
The overall length in the front-rear direction is formed to be substantially the same as the depth of the speaker box, and the slide piece is inserted into the slide groove of the rail piece in a meshing manner and pressed into the back of the acoustic chamber to be fixed, It constitutes a substantially crank-shaped sound transmission path in plan view that communicates the interior of the interior of the chamber and the side opening of the opening,
The speaker is detachably coupled in a state where a cone is aligned with a square front lid-like speaker mounting plate having a sound transmitting hole that is detachably attached to the front of the opening of the speaker box. While the plate is attached to the front face of the opening of the speaker box, the front end portion of the front support piece of the duct body is pressed in contact, while the speaker itself is housed in the acoustic chamber and the rear end is the acoustic unit. It is configured to be placed in a state where it is located at a substantially intermediate position facing the front inner surface of the rear wall of the chamber,
Further, the duct body has a plurality of types in which the position and shape of the slide piece with respect to the rail piece are unified and the transverse opening area of the acoustic passage of the main body part is different so that the duct mounting part can be mounted in common. A gaming machine characterized in that it can be selected from among them and can be detachably mounted . "
Is a summary.

In the above configuration, the internal dimensions (cross-sectional area, length), material (for example, synthetic resin materials having different hardness, metal materials other than synthetic resin materials, ceramic materials, etc.), wall thickness, and the like are variously varied. Prototype many duct bodies.
Then, with respect to one commercialized speaker box, the resonance test of the prototype duct body is performed in a state where the duct installation section is shared and the numerous trial duct bodies are detachably attached to the duct installation section. It can be done easily. This makes it possible to easily obtain a duct body that resonates well with sound waves in a specific sound range.
That is, as compared with the case where a large number of speaker boxes integrally provided with a duct body are manufactured and the test is repeated, a large number of prototype ducts are manufactured as described above for a single speaker box and a resonance test is performed. By repeating, the duct body which has the desired characteristic can be obtained easily. For this reason, the trial production cost can be significantly reduced.
Then, based on the prototype test, a duct body that resonates well with sound waves in a specific sound range is manufactured (mass production), and the duct body is mounted on the duct mounting portion of the speaker box, so that the sound in the specific sound range is improved. It can be increased, and the game effect by sound can be improved.

In the above configuration, by selecting a duct body having desired characteristics and mounting the duct body on the duct mounting portion of the speaker box, it is possible to satisfactorily resonate with a sound wave having a desired specific range.
That is, when a duct body corresponding to the heavy bass region is selected and mounted, the duct body resonates well with the sound wave of the heavy bass region, thereby enhancing the sound in the heavy bass region. .
In addition, when a duct body corresponding to the low range close to the mid range is selected and installed, the duct body resonates well with the sound waves in the low range close to the mid range, thereby reducing the low range close to the mid range. It becomes possible to enhance the sound.
For example, in a gaming machine such as a pachinko machine (including an arrangement ball machine and a sparrow ball machine) in which a game board equipped with a symbol display device is detachably mounted, a symbol display device that produces a symbol using adventure and action as a motif. When the equipped game board is installed, it is desirable to produce a sound such as a collision sound or explosion sound with a deep bass to enhance the sense of presence. In this case, a duct body corresponding to the heavy bass range is selected and mounted.
In addition, when a game board equipped with a symbol display device that produces a humorous character that does not require heavy bass sounds as a motif is installed, the duct body corresponding to the bass range close to the mid range is selected. Install.
That is, by preparing a plurality of duct bodies having different characteristics corresponding to game boards having different motifs, a duct body having desired characteristics corresponding to the game board every time the game board is attached / detached and replaced. By selecting and attaching to the duct mounting portion of the speaker box, it is possible to quickly cope with it and to effectively enhance the game effect by sound.
In other words, in the past, in order to effectively perform the sound effect with the sound corresponding to each game board having a different motif, it is necessary to replace the entire speaker box, which requires a lot of labor and replacement costs. Such labor and cost can be greatly reduced.

  In the above configuration, when the duct body is attached to one wall surface of the peripheral wall of the speaker box, the slide convex portion or slide concave portion of the duct body is opposed to the slide concave portion or slide convex portion forming the duct mounting portion of the one wall surface of the speaker box. Are slid in one direction to engage the slide concave portion and the slide convex portion. As a result, the duct body can be easily and quickly mounted on one wall surface of the peripheral wall of the speaker box.

According to this invention, the duct body with variously different cross-sectional areas and lengths of the air passage can be detachably mounted on the duct mounting portion of the speaker box so that the resonance test of the duct body can be easily performed. Compared with the case where a large number of speaker boxes integrally provided with a duct body are manufactured and tested, the cost can be greatly reduced.
And the sound of a specific sound range can be favorably enhanced by the duct body mounted on the duct mounting portion of the speaker box, and the game effect by sound can be improved.

  Next, the best mode for carrying out the present invention will be described with reference to examples.

  FIG. 1 is a perspective view showing a state in which a main body frame is opened on one side of an outer frame of the gaming machine and a glass door is opened on one side of the main body frame. FIG. 2 is a front view showing the entire front side of the gaming machine. FIG. 3 is a rear view showing the entire rear side of the gaming machine. FIG. 4 is a perspective view showing the main body frame and the game board of the gaming machine separated from the front right side. FIG. 5 is a perspective view showing the main body frame of the gaming machine from the upper left front side. FIG. 6 is a perspective view showing the relationship between the speaker box, the duct body and the speaker of the main body frame separately. FIG. 7 is a perspective view showing the speaker mounting plate, the speaker, and the vibration-proof packing separately. FIG. 8 is a side sectional view showing a state in which the speaker is mounted on the speaker box. FIG. 9 is a side sectional view showing a state in which the duct body is mounted on the side wall of the speaker box. FIG. 10 is a plan sectional view based on the line XX of FIG. For convenience of explanation, in the gaming machine, the player side will be described as the front and the opposite side as the back.

[About the outline of gaming machines]
As shown in FIGS. 1 to 3, a pachinko machine as a gaming machine includes an outer frame 10, a main body frame 30, a game board 40, a glass door 130, and the like.
The outer frame 10 is formed in a vertically rectangular frame shape by upper, lower, left and right frame members, and a main body frame 30 is attached to one side of the front surface of the outer frame 10 by a main body frame opening / closing hinge mechanism 20 so as to be opened and closed forward. ing.

[About the body frame]
The main body frame 30 is integrally formed of a synthetic resin material, and as shown in FIG. 4, a game board mounting body 31 is formed on the front side, and a mechanism mounting body 160 is formed on the rear side. Thus, the main body frame 30 has a function of a conventional front frame (sometimes called an inner frame, a front frame, etc.) and a mechanism plate (sometimes called a back mechanism plate, a back set plate, etc.). Yes.
In addition, the main body frame 30 is detachably engaged with a locking tool provided on the outer frame 10 on the rear side on the free end side opposite to the hinge mechanism to lock the main body frame 30 in a closed state. A main body frame locking hook 145 is disposed.

As shown in FIGS. 4 and 5, the game board mounting body 31 on the front side of the main body frame 30 has a game board mounting frame 33 into which the game board 40 is detachably exchanged from the front side. A rear surface receiving portion 34 for receiving a rear peripheral edge portion of the game board 40 is formed on the inner periphery of the rear (inner side) frame portion 33.
Further, front presser portions 35 are formed at two locations on the upper and lower portions of the inner wall surface on the one side of the game board mounting frame 33 with a space where one side portion of the game board 40 can be inserted into the rear surface receiving portion 34. ing.
Further, as shown in FIG. 5, locking grooves 36 corresponding to the lock members 50 of the game board 40 are formed at two locations on the upper and lower sides of the other inner wall surface of the game board mounting frame 33.
In addition, a main body side connector 37 for electrically connecting the main body frame 30 side and the game board 40 side is installed in the vicinity of the other side portion of the game board mounting frame 33.
Further, a turnbuckle-type tightening tool 55 is mounted on the lower side of the game board mounting frame 33 to press and tighten the lower front portion of the game board 40 against the rear surface receiving portion 34 of the game board mounting frame 33.

[About the game board]
As shown in FIGS. 1 and 4, the game board 40 is formed in a substantially square plate shape having a size that fits into the game board mounting frame 33 of the game board mounting body 31. A guide rail 41 having an outer rail 42 and an inner rail 43 is provided on the board surface (front surface) of the game board 40, and a game area 44 is defined inside the guide rail 41.
In the game board 40, in the game area 44, a game-related device, for example, a game device 46 called a center game, a symbol display device 48, a game device such as a winning device, a windmill, a guide nail, Various equipment such as lamp decoration members are arranged. Among these various equipments, the rear part of the predetermined equipment, in this embodiment 1, the rear part 47a of the accessory main body 47 of the accessory device 46 is arranged to protrude to the rear side of the game board 40 (FIG. 3). reference).
As shown in FIG. 4, a front structural member 40 a made of synthetic resin is attached to the front surface of the game board 40 in the outer region of the guide rail 41.

In the first embodiment, the accessory body 46 of the accessory device 46 is formed with an opening window at a substantially central portion, and the display surface 49 of the symbol display device (for example, liquid crystal panel) 48 is on the rear side of the accessory body 47. Is mounted facing the opening window.
The accessory body 47 is fitted into an assembly hole penetrating in the center of the game board 40, and the rear portion 47 a of the accessory body 47 and the symbol control board box 48 a of the symbol display device 48 are arranged on the game board 40. It protrudes and is arrange | positioned at the back side (refer FIG. 3).

Further, as shown in FIGS. 4 and 5, the lock member 50 is provided at two positions above and below the front side of the front component member 40 a on the front surface of the game board 40 at positions corresponding to the locking grooves 36 of the game board mounting frame 33. Is mounted so as to be rotatable by a shaft and a long hole in the left-right direction.
The game board 40 (including the front component member 40 a) is inserted between the rear receiving part 34 and the front holding part 35 on the left and right sides of the game board mounting frame 33, and The lock portion 51 is inserted into and engaged with the locking groove 36 of the game board mounting frame 33 so that it is mounted on the game board mounting body 31 of the main body frame 30 (see FIG. 1).

Further, in the first embodiment, on the back side of the game board 40, a function and a box as a collective bag that receives balls flowing into various winning devices and guides the balls to a predetermined position in a portion extending from the center to the lower part. A rear cover body 60 having a function as a mounting portion is provided. The rear cover body 60 includes a sub control board box 65 in which a sub control board such as a sound control board (speaker control board) and a lamp control board is housed, and a main control board box 61 in which the main control board is housed. It is mounted in a state where it is superimposed on the front and back (see FIG. 3).
Further, when the rear cover body 60, the sub control board box 65, and the main control board box 61 are respectively attached to the rear side of the game board 40, the game board is mounted from the front side of the game board mounting body 31 of the main body frame 30. The rear cover body 60, the sub control board box 65, and the main control board box 61 are arranged so as not to protrude outward from the outline of the game board 40 so that the game board 40 can be fitted and installed in the frame 33.

  In the first embodiment, the game board 40 is inserted into the game board mounting frame 33 from the front side of the game board mounting body 31 of the main body frame 30 on the lower side of the rear side of the game board 40. A game board side connector 45 that is detachably inserted into the main body side connector 37 is installed (see FIGS. 4 and 5).

[About the speaker box structure of the body frame]
As shown in FIGS. 4 to 6, a box-shaped speaker box 70 that opens to the front is provided below the opening of the game board mounting body (game board mounting frame 33) 31 on the synthetic resin main body frame 30. It is integrally formed.
In the first embodiment, as shown in FIGS. 6 and 8 to 12, one side of the lower region located below the game board mounting body 31 on the front surface of the main body frame 30 (an operation handle 115 described later is provided). The speaker box 70 is integrally formed on the side opposite to the first side.
That is, the speaker box 70 is integrally provided with an upper wall 72, a lower wall 73, left and right side walls 74, and a rear wall 75. A cone-type speaker 94 is mounted on the front side of the speaker box 70 via a speaker mounting plate 90 so as to close the opening of the space. As a result, the space between the rear side of the cone (that is, the diaphragm) 99 of the speaker 94 and the rear wall 75 is used as the acoustic chamber 71.
In particular, in order to prevent the movement of the cone (that is, the diaphragm) 99 of the speaker 94 from being hindered by sound waves generated in the acoustic chamber 71 when the speaker 94 is operated, the speaker wall 70 has a rear wall 75 that is a game. It is formed large with a depth dimension exceeding the rear side of the board mounting body 31.
As a result, the depth dimension of the speaker box 70 is ensured to be sufficiently large for the speaker 94. In the first embodiment, the speaker box 70 is formed large up to a position where the rear wall 75 is substantially flush with the rear surface of the mechanism mounting body 160 on the rear side of the main body frame 30.

Further, as shown in FIGS. 6 and 8 to 12, the inner walls of the upper wall 72, the lower wall 73, and the left and right side walls 74 of the space portion (acoustic chamber 71) of the speaker box 70 have a plurality of steps. As a result, the speaker box 70 is formed in a stepped shape having a wide opening side and a narrow back side. Further, the rear wall 75 is also formed in a stepped shape in which the upper half is shallow and the lower half is deep.
Further, as shown in FIGS. 8 to 10, the inner wall surfaces of the upper wall 72, the lower wall 73, and the left and right side walls 74 constituting the peripheral wall of the speaker box 70 are inclined so that the opening side is wide and the back side is narrow. The surfaces 72b, 73b, 74b (or tapered surfaces) are formed.

One side of the acoustic chamber 71 of the speaker box 70 has one end connected to the back side of the acoustic chamber 71 and the other end having an opening 85 opened to the front side of the main body frame 30. A passage (acoustic passage) 80 is provided.
In the first embodiment, as shown in FIGS. 6 and 10, a duct mounting portion 300 is formed on the inner wall surface of one side wall 74 a of the acoustic chamber 71 of the speaker box 70.

Further, at least one of the side wall 74 and the duct body 81 of the acoustic chamber 71 of the speaker box 70 is provided with a concave portion 76 (or 82) corresponding to the air passage 80.
In the first embodiment, as shown in FIGS. 6 and 10, the concave strips 76 and 82 corresponding to the air passage 80 between the one side wall 74 a of the acoustic chamber 71 of the speaker box 70 and the duct body 81. Are formed respectively.
Then, the air passage 80 on the duct body 81 side is bent outward and opened forward by the concave stripe portion 76 of the speaker box 70.
That is, at the substantially middle height position of one side wall 74 a of the acoustic chamber 71, a long concave portion 76 extending in the front-rear direction is formed from the rear side portion of the side wall 74 to the front end.
In addition, the duct mounting portion 300 on the inner wall surface of one side wall 74a of the speaker box 70 has a slide groove 78 as a slide recess corresponding to the duct body 81 along the upper and lower portions of the side opening of the recess 76. Each of the rail pieces 79 is formed integrally. In addition, a rail piece 79a having a slide groove 78a as a slide recess is also formed integrally with the back side portion of one side wall 74a of the acoustic chamber 71.

[Duct body of speaker box]
As shown in FIGS. 6, 9, and 10, the duct body 81 is formed separately from the speaker box 70 and is detachably mounted on the duct mounting portion 300 of the speaker box 70.
Further, in the first embodiment, the duct body 81 is formed of a synthetic resin material so as to be long in the front-rear direction, and has a substantially semi-cylindrical cross section in which the front end is closed by a curved wall (arc wall) and the rear end is opened. Is formed. A recess 82 corresponding to the air passage 80 is formed in the half cylinder portion of the duct body 81.
Further, the duct body 81 is integrally formed with a flat front support piece 83 extending forward from the front portion by a predetermined length, and the upper and lower edges of the front support piece 83 are formed in the slide groove 78. A corresponding slide piece (corresponding to a slide convex portion of the present invention) 83a is used.
Further, a rear support piece 84 having a substantially U-shape is integrally formed at the rear end of the duct body 81, and the upper edge portion of the rear support piece 84 is formed as a slide piece 84a corresponding to the slide groove 78a. Yes.

The duct body 81 has a stepped portion or a rear wall of the one side wall 74a in a state where the slide pieces 83a, 84a of the duct body 81 are inserted into the slide grooves 78, 78a of the one side wall 74a from the front side of the speaker box 70. The duct body 81 is positioned and attached to the one side wall 74a by being slid to a predetermined position in contact with 75.
Further, in a state where the duct body 81 is mounted on the one side wall 74a, the front side of the concave portion 76 of the one side wall 74a is blocked by the front support piece 83 of the duct body 81, thereby opening forward. An opening 85 of the air passage 80 is configured.

In particular, the internal dimensions (cross-sectional area, length), material, thickness, and the like of the air passage 80 of the duct body 81 are set so as to satisfactorily resonate with sound waves in a specific sound range.
In other words, it is formed of various materials such as synthetic resin materials with different hardness, metal materials other than synthetic resin materials, ceramic materials, etc., and many different shapes, lengths, cross-sectional areas, wall thicknesses, etc. Prototype ducts are manufactured, and the resonance test is repeatedly performed in a state where these many trial ducts are detachably mounted on the duct mounting portion 300 of the speaker box 70 formed integrally with the product main body frame 30. .
As a result of the resonance test, a trial duct that resonates well with sound waves in a specific sound range is selected, and a duct body 81 is formed (mass produced) based on the trial duct. The duct body 81 is detachably mounted on the duct mounting portion 300 of the speaker box 70 formed integrally with the main body frame 30.

Further, the specific sound range is mainly heavy bass, but there is a bass range close to the middle tone range and a mid range between them in addition to the heavy bass range. For this reason, also in the plurality of duct bodies 81, 81A,... Having characteristics corresponding to the respective bass ranges, a large number of trial ducts corresponding to the duct bodies 81, 81A,. Each of these prototype ducts is manufactured, and the resonance test is repeatedly performed in a state in which the large number of prototype ducts are detachably mounted on the duct mounting portion 300 of the speaker box 70 integrally molded with the main body frame 30 that has been commercialized.
As a result of the resonance test, prototype ducts that satisfactorily resonate with sound waves in the deep bass region, the bass region close to the middle tone region, and the middle bass region are selected. Then, duct bodies 81, 81A... Are formed (mass produced) based on each prototype duct.
In this way, a plurality of duct bodies 81, 81A... Having different characteristics are formed (mass produced) and prepared.
Among the plurality of duct bodies 81, 81A,..., A duct body having a desired characteristic, for example, the duct body 81 is selected, and the selected duct body 81 is a single product main body. The speaker box 70 formed integrally with the frame 30 is detachably and interchangeably mounted on the duct mounting portion 300.
FIG. 13 shows that a duct body 81 having a small cross-sectional area of the air passage 80 and a characteristic corresponding to a heavy bass region is detachably mounted on a duct mounting portion 300 of a speaker box 70 integrally formed with one main body frame 30. It is sectional drawing which shows the state made.
FIG. 14 shows that a duct body 81A having a characteristic corresponding to a low sound range having a large cross-sectional area of the air passage 80A and close to a mid sound range is attached to and detached from a duct mounting portion 300 of a speaker box 70 integrally formed with one main body frame 30. It is sectional drawing which shows the state with which mounting | wearing was possible.

Further, in the first embodiment, as shown in FIGS. 6 and 9, the peripheral walls of the speaker box 70, that is, the front edge portions of the upper wall 72, the lower wall 73, and the left and right side walls 74 have a substantially square ring shape. Thus, the protrusion is slightly protruded from the front surface of the main body frame 30, and the protrusion is an annular protrusion 70a.
Furthermore, boss portions 70b for mounting the speaker 94 via the speaker mounting plate 90 and screws are formed at a plurality of locations near the four corners of the annular protrusion 70a on the front edge of the speaker box 70, respectively.

[Speaker structure of speaker box]
As shown in FIGS. 6 and 7, the speaker (speaker device) 94 uses a so-called cone-type speaker in which a magnet 98 and a cone (diaphragm) 99 constituting main parts thereof are supported by a speaker frame 95. ing. The speaker 94 is mounted on the speaker mounting plate 90 at a flange portion 96 formed at the front edge of the speaker frame 95.
The speaker mounting plate 90 that is mounted by closing the opening of the acoustic chamber 71 of the speaker box 70 is formed in a substantially rectangular shape that is slightly larger than the annular protrusion 70a on the front edge of the speaker box 70 by a synthetic resin material.
In addition, a concave portion 91 into which the flange portion 96 of the speaker frame 95 is positioned and fitted is formed on the front surface of the speaker mounting plate 90. A boss portion 91 a corresponding to a screw screwed through an attachment hole penetrating the flange portion 96 of the speaker frame 95 is integrally formed on the bottom portion of the concave portion 91.
Further, an opening hole through which the magnet 98 and the cone 99 forming the main part of the speaker 94 protrude rearward is formed at the center of the bottom of the recess 91.

  That is, the speaker mounting plate 90 is inserted with a magnet 98 and a cone 99 constituting main parts of the speaker 94 from the front side of the recess 91 through the opening hole of the recess 91, and the flange portion 96 of the speaker frame 95 is provided with the recess 91. It is inserted in. In this state, the screw is screwed into the boss portion 91a at the bottom of the recess 91 through the mounting hole of the flange portion 96 of the speaker frame 95, so that the speaker 94 is mounted on the speaker mounting plate 90 in a positioned state. .

In addition, attachment portions 90 a each having attachment holes corresponding to the boss portions 70 b on the front edge of the speaker box 70 are integrally formed on the peripheral portion of the speaker mounting plate 90 toward the outside.
Further, the speaker mounting plate 90 and the mounting portions 90a of the respective mounting portions 90a are substantially perpendicular to the back surface and cover the outer surfaces of the annular projecting portion 70a and the boss portion 70b of the speaker box 70. Thus, the folding edge 90b is formed in an annular shape.
Further, on the back side of the speaker mounting plate 90, a substantially square as a vibration isolating member that is fitted between the folded edge 90b and the outer portion of the recess 91 and corresponds to the annular protrusion 70a on the front edge of the speaker box 70. An annular vibration-proof packing 93 is attached.

That is, as shown in FIGS. 8 and 9, the speaker mounting plate 90 is fitted so as to cover the outer side surfaces of the annular projecting portion 70a and the boss portion 70b of the speaker box 70 at the folded edge 90b. As a result, the boss portions 70b of the speaker box 70 and the mounting holes of the mounting portions 90a of the speaker mounting plate 90 are aligned in the same center line. In this state, the screws 94 are screwed into the boss portions 70b through the mounting holes of the mounting portions 90a of the speaker mounting plate 90, so that the speaker 94 is mounted on the speaker box 70 via the speaker mounting plate 90. .
Further, in a state where the speaker 94 is mounted on the speaker box 70 via the speaker mounting plate 90, the anti-vibration packing 93 made of an elastic material such as silicone rubber is formed between the annular protrusion 70 a of the speaker box 70 and the speaker mounting plate 90. It is sandwiched between and slightly elastically compressed. The vibration during the operation of the speaker 94 is absorbed by the vibration-proof packing 93 and is therefore reduced from being transmitted to the main body frame 30.

[About the lower area on the front side of the body frame]
As shown in FIGS. 4 and 5, a launch rail 68 that guides a ball toward the launch path of the game board 40 is inclined at the upper portion of the lower region of the front surface of the main body frame 30 near the speaker 94. It is attached to.
A lower front plate 110 is mounted on the front side of the lower region on the front surface of the main body frame 30 so as to cover the lower half of the lower region. A lower pan 111 is provided at a substantially central portion of the front surface of the lower front plate 110, and an operation handle 115 is provided near one side.
As shown in FIGS. 4 and 8, the lower front plate 110 is attached to the front side of the lower region of the front surface of the main body frame 30, so that the front of the substantially lower half of the speaker 94 is covered by the lower front plate 110.
In other words, a large-sized speaker 94 is disposed in the lower region of the front surface of the main body frame 30 so that the lower front plate 110 covers and hides the front of the substantially lower half of the speaker 94.
As shown in FIGS. 8 to 10, the lower front plate 110 is formed with openings at positions corresponding to the openings 94 of the speaker 94 and the air passage 80, and the openings have a plurality of slit-like shapes. A closing plate 110a having an acoustic through hole is mounted.

[About glass doors]
As shown in FIGS. 1 and 2, on one side of the front surface of the main body frame 30, a glass door 130 is moved forward by a door opening / closing hinge mechanism 120 so as to cover a portion extending from the upper end of the main body frame 30 to the lower front plate 110. It can be opened and closed. On the opposite side to the hinge mechanism of the glass door 130, on the rear side of the free end side, a latch that detachably engages with a door locking hook 141 provided on the main body frame 30 to lock the glass door 130 in a closed state. (Not shown) is provided.
Further, the glass door 130 is provided with a window frame 132 constituting an opening window through which the game area 44 of the game board 40 can be seen from the front. The window frame 132 has a transparent plate 133 such as a glass plate or a transparent resin plate. Is installed.
Further, substantially the entire surface of the glass door 130 except for the opening window is decorated by a front decorative member in which a lamp or the like is installed, and an upper plate 136 is formed at the lower part of the front surface of the glass door 130 (see FIG. 2).
The glass door 130 is formed with a plurality of slit-like acoustic through holes 137 at positions facing the front of the speaker 94.

[About the mechanism mounting body on the rear side of the body frame]
On the other hand, as shown in FIG. 3, a sphere tank 165 and a tank rail 175 having a volume capable of storing a large number of spheres are mounted in a communication manner on the upper portion of the mechanism mounting body 160 on the rear side of the main body frame 30. . In addition, a ball dispensing device 210 that is unitized in a vertically long shape is mounted in the vertical direction near one side (right side as viewed in FIG. 3) of the mechanism mounting body 160 of the main body frame 30.
Further, in the first embodiment, as shown in FIG. 3, the lower inclined end portion of the firing rail 100 is provided on one side (left side in FIG. 3) of the lower region of the mechanism mounting body 160 on the rear side of the main body frame 30. A launching device unit 230 having a launching hammer 233 for firing a ball sent to the launching position, a firing motor 232 for operating the firing hammer 233, and the like is mounted. Further, a power supply board box 240 having a power supply board, a frame control board box 234 having a frame control board, and the like are attached to the central portion of the lower region of the mechanism mounting body 160.

[Operation and Effect of Example 1]
The gaming machine according to the first embodiment is configured as described above.
Accordingly, during the game, for example, when the symbols displayed on the display surface 49 of the symbol display device 48 are variably displayed, when the reach state is reached, when the jackpot is reached, etc. The speaker 94 is operated based on a signal transmitted from a sound control circuit configured on the control board. Then, a sound generated by the operation of the speaker 94 is output in front of the gaming machine. In addition, sound due to the operation of the speaker 94 is emitted forward from the opening 85 through the acoustic chamber 71 and the air passage 80 of the speaker box 70.

In the gaming machine according to the first embodiment, the duct body 81 is formed separately from the speaker box 70, and is configured to be detachably mounted on the duct mounting portion 300.
The duct body 81 is formed as described below, and is attached to the duct attachment portion 300 so as to be attachable / detachable.
That is, the internal dimensions (cross-sectional area, length), material (for example, synthetic resin materials having different hardness, metal materials other than synthetic resin materials, materials of ceramic materials, etc.), wall thickness, and the like are variously varied. A large number of prototype duct bodies are manufactured, and the duct mounting portion 300 of one speaker box 70 (in this embodiment, the speaker box 70 integrally formed with the main body frame 30) in which these many prototype duct bodies are commercialized. The resonance test is performed by attaching to the detachable and replaceable.
Accordingly, a duct body that resonates well with sound waves in a specific sound range is set, and the duct body 81 is manufactured based on the duct body. Then, the duct body 81 is detachably mounted on the duct mounting portion 300 of one productized speaker box 70 (the speaker box 70 of the main body frame 30).
As described above, since the duct body 81 having desired characteristics can be easily obtained, the cost can be greatly reduced as compared with the case where many speaker boxes integrally provided with the duct body are manufactured and the test is repeated. Can be reduced.
The duct body 81 attached to the duct attachment portion 300 of the speaker box 70 can favorably enhance the sound in the specific sound range and improve the game effect by the sound.

In the first embodiment, a plurality of duct bodies 81, 81A... Having different characteristics are formed and prepared.
Then, a duct body having desired characteristics is selected from the plurality of duct bodies 81, 81A..., And the selected duct body is a single speaker box 70 (with the main body frame 30). It is attached to the duct mounting part 300 of the integrally formed speaker box 70) so as to be attachable / detachable.
As shown in FIG. 13, when the duct body 81 having the characteristics corresponding to the heavy bass range is selected and mounted, the duct body 81 resonates well with the sound waves in the heavy bass range, and thereby the heavy bass range. It becomes possible to enhance the sound.
Further, as shown in FIG. 14, when the duct body 81A having characteristics corresponding to the low sound range close to the mid sound range is selected and mounted, the duct body 81A is excellent for the sound waves in the low sound range close to the mid sound range. It is possible to reinforce the low-frequency sound close to the mid-range due to resonance.

For example, in a gaming machine in which a game board 40 having a symbol display device 48 is detachably attached, when the game board 40 having a symbol display device 48 that produces a symbol effect using adventure and action as a motif is attached. It is desirable to enhance the sense of presence by producing sounds such as collision sounds and explosion sounds with deep bass. In this case, the duct body 81 corresponding to the heavy bass range is selected and mounted.
In addition, when the game board 40 having the symbol display device 48 that produces a symbol with a humorous character that does not require heavy bass sounds as a motif is mounted, the duct body 81 corresponding to the bass range close to the mid range. Select and install.
That is, by preparing a plurality of duct bodies 81 having different characteristics corresponding to the game boards 40 having different motifs, the desired characteristics corresponding to the game board 40 each time the game board 40 is detached and replaced. By selecting the duct body 81 having the above and mounting the duct body 81 on the duct mounting portion 300 of the speaker box 70, it is possible to quickly cope with it and to effectively perform the game effect by sound.
In other words, conventionally, in order to effectively perform a game effect by sound corresponding to game boards with different motifs, it is necessary to replace the entire speaker box 70, which requires a lot of labor and replacement costs. Such trouble and cost can be greatly reduced.

Further, in the first embodiment, when the duct body 81 is detachably mounted on the duct mounting portion 300 of the speaker box 70, the duct body 81 is inserted into the slide grooves 78, 78a of the one side wall 74a from the front side of the speaker box 70. In the state where the slide pieces 83a and 84a are inserted, the duct body 81 is slid to a predetermined position where it abuts against the stepped portion of the one side wall 74a or the rear wall 75, so that the duct body 81 is positioned on the one side wall 74a. To be installed.
In this way, the duct body 81 can be easily and quickly attached to the speaker box 70.

Further, in the first embodiment, the speaker box 70 is a main body integrally including a game board mounting body 31 to which the game board 40 is detachably mounted and a mechanism mounting body 160 to which the ball payout device 210 is mounted. The frame 30 is formed integrally with the main body frame 30 simultaneously with the synthetic resin material. For this reason, the trouble of separately forming and assembling the speaker box 70 with respect to the main body frame 30 can be saved.
Further, in the first embodiment, the speaker box 70 is formed to have a depth dimension in which the rear wall 75 exceeds the rear side of the game board mounting body 31. For this reason, it is possible to satisfactorily suppress the movement of the cone (diaphragm) 99 of the speaker 94 from being hindered by sound waves generated in the acoustic chamber 71 when the speaker 94 is operated.
In other words, the depth dimension of the speaker box 70 can be easily reduced in such a size that the movement of the cone (diaphragm) 99 of the speaker 94 can be prevented from being hindered by sound waves generated in the acoustic chamber 71 when the speaker 94 is operated. Can be set to
In addition, the speaker 94 can be mounted stably and firmly by integrally forming the box-shaped speaker box 70 that opens to the front simultaneously with the molding of the main body frame 30 having a large size, high rigidity, and a large depth dimension in the front-rear direction. In addition, it is possible to prevent the generation of abnormal noise such as chatter noise and the sound wave in the acoustic chamber 71 from leaking, and the acoustic effect can be improved satisfactorily.
As described above, it is possible to mount the long duct body 81 along the inner wall surface of the one side wall 74a of the speaker box 70 having a large depth dimension, thereby easily configuring the air passage 80 having a large depth dimension. It becomes possible.

  In the first embodiment, the duct body 81 is mounted on the inner wall surface of one side wall 74 a of the speaker box 70, and the air passage 80 is bent outward by the concave portion 76 of the one side wall 74 a of the speaker box 70. To open forward. For this reason, the sound discharge property can be improved by increasing the cross-sectional area of the air passage 80 by an amount corresponding to the cross-sectional area of the concave portion 76 of the one side wall 74a of the speaker box 70.

  In the first embodiment, the duct body 81 is formed in a substantially semi-cylindrical cross section, and the air passage 80 is configured by the cooperation of the inner wall surface of one side wall 74a of the speaker box 70 and the duct body 81. The air passage 80 having the required cross-sectional area can be configured by the small duct body 81 having a small cross-sectional area, and the acoustic chamber 71 is reduced from being narrowed by the size of the duct body 81 that is reduced in size. Can do.

Further, in the gaming machine according to the first embodiment, by simultaneously forming the main body frame 30 having a large size, high rigidity, and a large depth dimension in the front-rear direction, a box-shaped speaker box 70 opening forward is integrally formed. When the speaker 94 is in operation, the main body frame 30 can be prevented from vibrating (resonating) due to the vibration of the cone (vibrating plate) 99 of the speaker 94.
Thereby, for example, it is possible to prevent a problem that the firing rail 100 and the firing hammer 233 of the launching device are vibrated unexpectedly due to vibration during operation of the speaker 94. As a result, it is possible to prevent a launch failure in which the launch state of a ball (pachinko ball) launched from the launch position of the launch rail 100 by the launch hammer 233 changes unexpectedly.
In addition, a speaker box 70 is formed on the other side portion opposite to the launching device disposed on one side portion of the main body frame 30. As a result, the speaker box 70 can be formed at a position far from the launching device, so that it is possible to reduce the transmission of vibration during operation of the speaker 94 to the launching device.
In other words, due to vibration transmission during operation of the speaker 94, it is possible to satisfactorily prevent a launch failure caused by unexpectedly changing a ball (pachinko ball) launched from the launch position of the launch rail 100. .

As shown in FIGS. 8 to 10, the inner wall of the speaker box 70 (the inner wall surfaces of the upper wall 72, the lower wall 73, and the left and right side walls 74) is formed in a stepped shape having a wide opening side and a narrow back side. ing. For this reason, the strength of the speaker box 70 can be improved satisfactorily, the vibration of the speaker box 70 when the speaker 94 is activated can be suppressed well, and the effect of preventing the vibration of the main body frame 30 is great.
Further, since the inner wall of the speaker box 70 formed in a step shape is wide at the opening side and narrow at the back side, for example, after the speaker box 70 is formed simultaneously with the molding (for example, injection molding) of the main body frame 30 with a synthetic resin material, When removing the mold, it is possible to prevent a problem that the removal of the main body frame 30 is difficult due to the speaker box 70.
Further, the inner wall of the speaker box 70 is formed on an inclined surface or a tapered surface that is inclined so that the opening side is wide and the back side is narrow, so that the body frame 30 can be removed more easily.

In the first embodiment, when the speaker 94 is attached to the speaker box 70, first, the flange portion 96 of the speaker frame 95 is fitted into the concave portion 91 of the speaker attachment plate 90 and attached by screws. Thus, the speaker 94 can be easily mounted on the speaker mounting plate 90 with the speaker 94 positioned.
Next, the folding edge 90b of the peripheral portion of the speaker mounting plate 90 is fitted so as to cover the outer surface of the annular protrusion 70a and the boss portion 70b formed at the periphery of the opening of the acoustic chamber 71 of the speaker box 70. . Thereafter, by screwing a screw into the boss portion 70b of the speaker box 70 through the mounting hole of the speaker mounting plate 90, the speaker mounting plate 90 can be easily and displaced so as to close the opening of the acoustic chamber 71 of the speaker box 70. (See FIGS. 8 to 10).
As described above, the speaker 94 can be stably and firmly attached to the speaker box 70 by the speaker attachment plate 90, and the acoustic performance during operation of the speaker 94 can be improved.

Further, on the back side of the speaker mounting plate 90, an elastic body such as silicone rubber which is fitted between the folded edge 90b and the outer portion of the recess 91 and corresponds to the annular protrusion 70a on the front edge of the speaker box 70 is provided. A substantially square annular vibration-proof packing 93 is attached.
And the speaker 94 is mounted | worn through the vibration-proof packing 93 and the speaker mounting plate 90 in the opening part of the acoustic chamber 71 of the speaker box 70 (refer FIGS. 8-10).
For this reason, vibration during operation of the speaker 94 is absorbed by the vibration-proof packing 93. As a result, vibration during operation of the speaker 94 can be prevented from being transmitted to the main body frame 30, and vibration (resonance) of the main body frame 30 due to vibration transmission can be satisfactorily suppressed.

Next, a second embodiment of the present invention will be described with reference to FIGS.
FIG. 15 shows a speaker box duct mounting structure according to Embodiment 2 of the present invention, and is an explanatory view showing a state in which a duct body having a small hole diameter is detachably mounted. FIG. 16 is an explanatory view showing a state in which a duct body having an intermediate hole diameter is detachably mounted. FIG. 17 is an explanatory view showing a state where a duct body having a large hole diameter is detachably mounted.
As shown in FIGS. 15 to 17, a duct is mounted on the inner wall surface or outer wall surface of one wall 275 forming the peripheral wall of the speaker box 270 integrally formed with the main body frame 30 in the same manner as in the first embodiment. The part 300 is constituted by a slide concave part 278 (or a slide convex part 283a).

Further, in the plurality of duct bodies 281, 281A, 281B,... Having different characteristics, slide protrusions extending in the front-rear direction are attached to the outer surface of the duct body 300 so as to be detachable and replaceable by a one-way sliding operation. Portions 283a (or slide recesses 278) are respectively formed.
Since the other configuration of the second embodiment is configured in substantially the same manner as the first embodiment, the description thereof is omitted.

Therefore, this second embodiment also has substantially the same operational effects as the first embodiment.
That is, as described in the first embodiment, the duct body 281 (or 281A, 281B,...) Is attached to the duct mounting portion 300 of one productized speaker box 270 (the speaker box 70 of the main body frame 30). ) Is detachably mounted. For this reason, it is possible to easily perform the resonance test of the trial duct body in a state where the duct installation section 300 is shared and a large number of trial duct bodies are detachably attached to the duct installation section 300. As a result, the duct body 281 (or 281A, 281B...) That resonates well with sound waves in a specific sound range can be easily obtained.
As a result, the cost can be greatly reduced as compared with the case where a large number of speaker boxes integrally provided with a duct body are manufactured and the test is repeated.
And the duct body 281 (or 281A, 281B...) Attached to the duct attachment part 300 of the speaker box 70 can favorably enhance the sound in the specific sound range, and improve the game effect by sound. Can do.

The specific sound range is mainly heavy bass, but in addition to the heavy bass range, there are a bass range close to the middle tone range and a middle bass range. The bodies 281, 281 A, 281 B... Are formed and prepared.
Then, a duct body having desired characteristics is selected from the plurality of duct bodies 281, 281A, 281B..., And the selected duct body is a single speaker box 270 (body frame). 30 is attached to the duct mounting part 300 of the speaker box 270) integrally formed with the detachable and replaceable part.
As shown in FIG. 15, a duct body 281A having a small hole diameter (or long) air passage 280 corresponding to the heavy bass range and attached to the duct mounting portion 300 in a detachable and replaceable manner. The sound in the range can be enhanced well.
Further, as shown in FIG. 17, a duct body 281B having a large hole diameter (or short length) air passage 280B that can be attached to and detached from the duct mounting portion 300 corresponding to a low-frequency range close to the mid-range. Thus, it is possible to favorably enhance the sound in the low range close to the mid range.
Further, as shown in FIG. 16, a duct body 281B corresponding to an intermediate low frequency range and having an air passage 280A having an intermediate hole diameter is detachably mounted on the duct mounting portion 300, so that the intermediate low frequency range can be changed. Sound can be enhanced well.
In the plurality of duct bodies 281, 281 A, 281 B..., The cross-sectional shape of the air passages 280, 280 A, 280 B. There may be.

[About other embodiments]
The present invention is not limited to the first and second embodiments.
For example, in the first and second embodiments, the case where the duct mounting portion 300 provided on one wall surface of the peripheral wall of the speaker box 70 is configured by a slide concave portion or a slide convex portion is exemplified. Any structure may be used as long as it is a structure in which a prototype duct body and a plurality of duct bodies capable of satisfactorily enhancing sound waves in a plurality of specific sound ranges having different sound ranges can be mounted appropriately and removable.
For example, the present invention can be carried out even when the duct mounting portion is configured to include a boss portion corresponding to a screw that allows the duct body to be attached and detached.
In the first and second embodiments, the main body frame 30 attached to the front surface of the outer frame 10 so as to be openable and closable includes a conventional front frame (sometimes referred to as an inner frame, a front frame, etc.) and a mechanism plate ( However, the present invention is not limited to this.
That is, a front frame having a game board mounting body 31 on which the game board 40 is mounted on the front surface of the outer frame 10 is detachably mounted, and a mechanism plate on which a ball payout device is mounted is disposed behind the front frame. The present invention can be adopted even with a gaming machine of the type described above. In this case, the front frame corresponds to the main body frame.
Further, the present invention can be applied to gaming machines other than pachinko machines, for example, gaming machines that perform slot games using pachinko balls, and slot machines that perform slot games using medals.

It is a perspective view which shows the state by which the main body frame was opened by the one side of the outer frame of the game machine which concerns on Example 1 of this invention, and the glass door was opened by the one side of the main body frame. It is a front view which similarly shows the whole front side of a gaming machine. It is a rear view which similarly shows the whole rear side of a gaming machine. It is the perspective view which isolate | separated the main body frame and game board of a gaming machine similarly, and shows diagonally from the upper right front. It is a perspective view which similarly shows the main body frame of a game machine from diagonally upper left front. It is a perspective view which isolate | separates and similarly shows the relationship between the speaker box of a main body frame, a duct body, and a speaker. It is a perspective view which isolate | separates and shows a speaker mounting plate, a speaker, and vibration proof packing similarly. FIG. It is a sectional side view which shows the state in which the speaker was similarly mounted | worn with the speaker box. It is side sectional drawing which shows the state by which the duct body was similarly mounted | worn with the side wall of the speaker box. FIG. 10 is a plan sectional view based on the XX line in FIG. 9. It is a perspective view which similarly shows a main body frame from the front side. It is a perspective view which similarly shows a main body frame from the back side. It is explanatory drawing which shows the state by which the duct body was mounted | worn so that attachment or detachment was possible at the duct mounting part of the speaker box. It is explanatory drawing which shows the state with which the duct body of the same large hole diameter was mounted | worn so that attachment or detachment was possible. The duct box mounting structure of the speaker box which concerns on Example 2 of this invention is shown, and it is explanatory drawing which shows the state with which the duct body of a small hole diameter was mounted | worn so that attachment or detachment was possible. It is explanatory drawing which shows the state in which the duct body of the same intermediate hole diameter was similarly mounted | worn so that attachment or detachment was possible. It is explanatory drawing which shows the state with which the duct body of the same large hole diameter was mounted | worn so that attachment or detachment was possible.

DESCRIPTION OF SYMBOLS 10 Outer frame 30 Main body frame 31 Game board mounting part 33 Game board mounting frame 40 Game board 70 Speaker box 71 Sound room
72 Upper wall
73 Lower wall
74 Side wall
74a right side wall
75 Rear wall 78 Slide groove (slide recess)
79 Rail piece 80, 80a Sound passage 81 Duct body
83 Front support piece 83a Slide piece (slide convex part)
84 Rear support piece
85 opening
90 Speaker mounting plate 94 Speaker
99 corn
160 Mechanism wearing body
210 Ball dispenser
300 Duct mounting part

Claims (1)

A main body frame having an opening space that opens in front and rear is mounted on the front side of the outer frame so that it can be opened and closed by a hinge mechanism, and a game board is mounted on the back side along the opening space of the main body frame so as to be detachable. A game board mounting body constituting the frame is provided, and a mechanism mounting body for mounting the ball payout device is provided on the back side of the game board mounting body, while a speaker is placed in a speaker box formed at the lower part of the main body frame. A gaming machine that is detachably stored from the front side,
The main body frame is integrally formed of synthetic resin in a state where the game board mounting body and the mechanism mounting body constituting the gaming board mounting frame are aligned in the front-rear direction, and at a lower front side than the opening space of the main body frame. Forming the main body frame with the box-shaped speaker box having a front opening for accommodating the speaker and the acoustic opening having a front opening for releasing the speaker sound in front left and right adjacent to each other at the front left part Sometimes it is integrally formed,
The speaker box is disposed at a position that is substantially flush with the upper wall, the lower wall, the left and right side walls, and the rear surface of the mechanism mounting body, with reference to the flat plate surface on the lower front side of the opening space of the body frame. An acoustic chamber of a rectangular space having a depth larger than the length in the front-rear direction of the speaker is defined in the interior surrounded by the peripheral wall with the rear wall, and a narrow vertical width is formed in a substantially front half of the right side wall. The opening that communicates with the acoustic chamber is partitioned and formed on the upper side and the lower edge of the narrow vertical opening of the right side wall, and is formed in a side-by-side direction as a duct mounting part. For the rail piece, a duct body for attaching the acoustic chamber and the opening to form an acoustic passage is attached,
The duct body is
A substantially semi-cylindrical main body part whose front part is closed and whose rear part is opened in a substantially U-shaped cross section that opens toward the right side wall of the speaker box;
A flat plate-like front support piece extending forward by a predetermined length from the closed front portion of the main body,
A rear support piece extending rearward of the opened rear portion of the main body, and
A slide piece protruding from the upper and lower outer edges of the main body part and the front support piece,
The overall length in the front-rear direction is formed to be substantially the same as the depth of the speaker box, and the slide piece is inserted into the slide groove of the rail piece in a meshing manner and pressed into the back of the acoustic chamber to be fixed, It constitutes a substantially crank-shaped sound transmission path in plan view that communicates the interior of the interior of the chamber and the side opening of the opening,
The speaker is detachably coupled in a state where a cone is aligned with a square front lid-like speaker mounting plate having a sound transmitting hole that is detachably attached to the front of the opening of the speaker box. While the plate is attached to the front face of the opening of the speaker box, the front end portion of the front support piece of the duct body is pressed in contact, while the speaker itself is housed in the acoustic chamber and the rear end is the acoustic unit. It is configured to be placed in a state where it is located at a substantially intermediate position facing the front inner surface of the rear wall of the chamber,
Further, the duct body has a plurality of types in which the position and shape of the slide piece with respect to the rail piece are unified and the transverse opening area of the acoustic passage of the main body part is different so that the duct mounting part can be mounted in common. A gaming machine characterized in that it can be selected from among them and can be detachably mounted .

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