JP4932457B2 - Bullet ball machine - Google Patents

Description

  The present invention relates to a ball game machine including a shielding device that can be displaced into an open state in which identification information displayed on a display device is visible and a shielding state in which the identification information is invisible.

In a ball game machine (pachinko machine), a display device (symbol display device) capable of variably displaying identification information composed of numbers and symbols is attached to the rear side of the game board, and the identification displayed on the display device Information can be visually recognized from the display window (transparent window portion) of the center accessory (large decorative member) provided in the approximate center of the game board. Then, between the display window on the game board and the display device, when the gaming state becomes a predetermined state, the display window is shielded to conceal the identification information, etc. so as to enhance the effect effect during the game. An apparatus is provided (see, for example, Patent Document 1).
JP 2004-135585 A

  However, the shielding device in the above-described ball game machine has a moving stroke corresponding to the size of the display window from the upper end to the lower end of the display window and vice versa with the power of a motor or the like. Since the display window is opened and closed only by moving up and down, if the display window becomes larger as the display screen becomes larger, the opening and closing movement stroke of the shielding plate becomes longer, and the display window is often opened and closed. It may take time and interfere with the game. In addition, if the opening / closing operation of the shielding plate is speeded up to shorten the opening / closing time, a large burden is placed on the motor, the shielding plate, etc., which may cause an early failure.

  In view of the above-described conventional problems, an object of the present invention is to provide a ball game machine that can quickly open and close a display window without imposing a heavy burden on a motor or a shielding plate.

According to the present invention, the above problem is solved as follows.
(1) A display device capable of displaying identification information relating to a game, a game board having a circular display window provided in front of the display device and allowing the identification information to be visually recognized, the display window and the display An open state in which the display window is opened to make the identification information visible, and a part or all of the display window is shielded and part or all of the identification information is invisible. in a ball-shooting game machine having a displaceable shielding device to shield state, the shielding device, said game board rear surface side is directly or indirectly fixed to the and polymerized rearwardly relative to the display window wherein the base plate having an opening to the identification information visible through the display window, forward and reverse rotatable motor disposed in front facing the rear surface of the game board in the base plate to be displayed on the display device Te And motor, which has external teeth on the outer circumference, is supported on the base plate for rotation around a virtual rotation axis facing the front-rear direction approximately matches the center of the display window, the virtual rotation axis by the power of the motor And a circular rotating plate capable of rotating by a predetermined angle around the base plate, and a front surface of the base plate and around the rotating plate so as to be swingable by a support shaft facing in the front-rear direction. A plurality of sector gears meshed with the external teeth and capable of swinging in synchronization with the rotation of the rotating plate, and located on the front surface of the base plate and swingable around the support shaft integrally with the plurality of sector gears. a is, in synchronization with the rotation of the rotary disc, and the identification information displayed on opening the display window the display device visible through the opening of the display window and the base plate That the open position and, a part or shield the whole the display device movable in the blocking position of the invisible part or all of the identification information displayed plurality of shielding plates of the display window, The rotating plate is disposed on the front surface of the base plate so as to be directly in front of the opening of the base plate and directly behind the display window, and when the plurality of shielding plates are in the open position, And the swinging end portion is positioned outside the outer periphery of the rotating plate and located between the back side of the game board and the front surface of the base plate, and the display window is opened. , When in the shielding position, the respective swinging end portions are concentrated in the vicinity of the virtual rotation axis to shield part or all of the display window, and the plurality of sector gears are respectively It has a collar part which can slide in back-and-forth direction alternately with respect to the side of the external tooth in the rotation plate, and can suppress shakiness in the front-rear direction of the rotation plate .

(2) above (1) Oite in section the rotating plate, is formed into a disk shape by transparent synthetic resin material.

(3) above (1) or (2) Oite to claim, wherein the shielding device, so that the rotating plate can rotate around the imaginary rotation axis, the support for supporting the periphery or near the rotating plate Means.

According to the present invention, the following effects can be obtained.
According to the first aspect of the present invention, the plurality of shielding plates are moved from the open position located outside the rotating plate to the shielding position located near the virtual rotation axis of the rotating plate and vice versa, that is, to the radius of the display window. Since the display window can be opened and closed by rotating it by substantially the corresponding movement stroke, the load on the motor and the shielding plate can be reduced, and the display window can be opened and closed quickly.
Furthermore, each of the plurality of sector gears is provided with flanges that can alternately slide in the front-rear direction with respect to the side surfaces of the outer teeth of the rotating plate, so that by suppressing the back-and-forth movement of the rotating plate Engagement between the sector gear and the rotating plate is ensured, and the plurality of shielding plates can be reliably swung in synchronization with the rotation of the rotating plate.

According to the second aspect of the present invention, since the rotating plate is formed in a disc shape with a transparent synthetic resin material, the identification information displayed on the display device can be visually recognized through the rotating plate. .

According to the third aspect of the present invention, the rotating plate can be reliably supported by the supporting means so as to be able to rotate around the virtual rotational axis.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the front side of the drawing in FIG. 1 showing the front view of the ball game machine is “front or front surface”, the back side of the drawing is “rear side or back surface”, the left side is “left”, The right side is “right”.

  As shown in FIGS. 1 and 2, the ball game machine 1 includes a gaming machine frame 2 installed on a gaming island of a gaming facility such as a gaming store, and identification information 100 (FIG. 1 only). A display device 3 capable of variably displaying, a game board 4 which will be described later on the front surface of the display device 3 and disposed in front of the display device 3, and a circular glass plate 61 is fitted in the center, A front door 6 is pivotally attached to a left portion of the gaming machine frame 2 by an up and down hinge shaft (not shown), and a handle 7 provided at a lower right front portion of the gaming machine frame 2 is rotated. Thus, a game ball stored in a ball storage tray 8 provided below the front door 6 is driven into the game area 4 from a launching device (not shown), and a predetermined game can be performed.

  The game board 5 is formed of an opaque material such as veneer plywood, and a circular (including elliptical) game area 4 surrounded by the guide rails 9 and 10 is formed on the board surface (front surface). A circular display window 12 is provided at a substantially central portion of the game area 4. The display window 12 is formed by a center accessory 13 described later.

  The game area 4 includes a large number of game nails 11 for changing the flow direction of game balls, a center member 13 made of synthetic resin, a normal symbol operation gate 14 through which a game ball can pass or enter, and a game A plurality of winning holes 15 into which balls can enter, a symbol start port 16 into which gaming balls can enter, a first state that is disadvantageous for the player (a closed state in which the gaming balls are substantially incapable of winning) and the player A large winning device 17 that can be displaced to a second state (open state in which a game ball can win a prize) advantageous to the player is arranged. Further, at the lowermost part of the game area 4, there is provided an out port 18 for discharging the game ball driven into the game area 4 to the rear of the game board 5, and further to the right side of the center accessory 13 in the game area 4. The auxiliary display window 51 is perforated.

The game ball launched from the launching device is guided by the guide rails 9 and 10, is driven into the game area 4, and flows down while coming into contact with the game nail 11, and enters either the winning opening 15 or the symbol start opening 16. In such a case, a predetermined number of game balls are awarded to the player as prize balls, and if none of them is entered, it is discharged from the out port 18 to the rear of the game board 5.

  The display device 3 has a display unit 301 composed of a liquid crystal screen or the like on the front surface, and is fixed to the gaming machine frame 2 so that the display unit 301 faces the back surface of the game board 5. The identification information 100 displayed on the display unit 301 is variably displayed for a predetermined time based on a predetermined probability when the game ball that has been driven into the game area 4 enters the symbol start port 16 and then stops. Is displayed. When the combination of the identification information 100 that is confirmed and displayed is a predetermined display mode, for example, as shown in FIG. 1, when three identical numbers “7” are arranged, a specific gaming state (so-called big hit state) ) Is generated, and the big prize device 17 is displaced from the first state to the second state, and a predetermined game value is given to the player.

The gaming board 5 can be attached to and detached from the gaming machine frame 2 with the display device 3 attached to the gaming machine frame 2 by being arranged in front of the display device 3. As a result, the gaming theme of the gaming machine 1 can be easily changed by removing the gaming board 5 and the various parts attached to the gaming board 5 from the gaming machine frame 2 and replacing them with a new gaming board 5. The display device 3 can be reused while attached to the gaming machine frame 2.

  The center accessory 13 is fixed to the game board 5. The circular display window 12 provided in the center accessory 13 enables visual recognition of the identification information 100 displayed on the display unit 301 from the front of the gaming machine 1. A transparent plate 121 is provided on the rear side of the display window 12.

Below the display window 12 of the center accessory 13, among the game balls that have been driven into the game area 4, the game balls that have entered the warp inlet 134 provided on the left side of the center accessory 13 are left and right and front and rear. A stage 131 that can be rolled is formed. Similarly, on the lower front surface of the stage 1301, a game ball that has entered the drop opening 132 provided at the center rear of the stage 131 among the game balls that have rolled the stage 131 is designed. A discharge port 133 for discharging right above the start port 16 is provided. Note that the game ball discharged from the discharge port 133 is discharged directly above the symbol start port 15, so that the probability of entering the symbol start port 16 is high.

  The auxiliary display window 51 is provided in a region where a game ball that is driven into the game region 4 does not flow down and at a position facing the right region of the display unit 301 in the display device 3, and displays auxiliary information displayed on the display unit 301. Visible. The auxiliary information assists the display of the identification information 100 and enhances the effect. Thus, the identification information 100 is displayed in the central area of the display unit 301 facing the display window 12, and the auxiliary information is displayed in the right area of the display unit 301 facing the auxiliary window 51. With the device 3, the effect information can be viewed from the display window 12, and the auxiliary information can be viewed from the auxiliary display window 51.

  As shown in FIG. 5, the back surface of the game board 5 is displaced via the upper set plate 19 into an open state (see FIGS. 1 and 3) in which the display window 12 is opened and a shield state (see FIG. 4) in which the display window 12 is shielded. A possible shielding device 20 is attached.

As described above, since the display device 3 is disposed on the gaming machine frame 2 side and the shielding device 20 is disposed on the game board 5 side, it is necessary to consider the mounting relationship of the display device 3 to the game board 5 as in the past. Since there is no property, the display window 12 can be enlarged.

A lower set plate 21 is attached below the upper set plate 19. The lower set 21 is integrally formed with a discharge path 211 for discharging game balls that have entered the winning holes 15 and the symbol start port 16 to the rear side of the game board 5, and the front surface of the game board 5. A printed circuit board 42 mounted with LEDs for illuminating is attached. In addition, you may fix the shielding apparatus 20 directly to the back surface of the game board 5 without the upper set board 19 as needed.

The upper set board 19 is made of a translucent or transparent synthetic resin, and is fixed to the back surface of the game board 5 by a plurality of bolts (not shown) so as to surround the rear side periphery of the center accessory 13. . As shown in FIG. 7, the upper set plate 19 has an opening 191 that overlaps backward with respect to the display window 12 of the center accessory 13 and does not hinder the visual recognition of the identification information 100 from the display window 12. A plurality of (four in the present embodiment) columnar attachment portions 192 for projecting a predetermined amount rearward and supporting the shielding device 20 are integrally provided.

  As shown in FIGS. 6 and 7, the shielding device 20 rotates at a predetermined angle around a metal base plate 23, a motor 24, and a virtual rotation axis O that faces the front-rear direction via the relay gear 25 by the rotation of the motor 24. A possible rotating plate 26, six (even number) sector gears 28 to 33 pivotally supported at respective positions by a support shaft 27 facing the base plate 23 in the front-rear direction, and the sector gears 28 to 33 rotate integrally with each other. Six movable shielding plates 34 to 39 are provided.

When the shielding device 20 is in the open state, the display window 12 is opened so that the identification information 100 can be viewed from the display window 12, and when the shielding device 20 is also in the shielded state, the display window 12 is shielded. The identification information 100 is concealed so that the identification information 100 cannot be viewed from the display window 12.

All movable parts of the motor 24, the relay gear 25, the rotating plate 26, the sector gears 28 to 33 and the shielding plates 34 to 39 in the shielding device 20 are arranged on the front side of the base plate 23 facing the back surface of the game board 5. As a result, since all the movable parts do not protrude rearward from the base plate 23 which is a fixed part, the movable part comes into contact with the display unit 301 of the display device 3 or the like, and the display unit 301 is damaged. It can be surely prevented.

In the present embodiment, the sector gears 28 to 33 and the shielding plates 34 to 39 are formed separately, but the sector gears 28 to 33 and the shielding plates 34 to 39 may be integrally formed. Further, the rotation of the motor 24 may be directly transmitted to the rotating plate 26 without using the relay gear 25.

  The base plate 23 has a circular opening 231 at the center, and the opening 231 is substantially aligned rearward with respect to the display window 12 of the center accessory 13, and a predetermined amount is provided between the front surface and the rear surface of the game board 5. Are fixed to the mounting portion 192 of the upper set plate 19 by the bolts 22 so that a gap is formed. Accordingly, the motor 24, the relay gear 25, the rotating plate 26, the sector gears 28 to 33, and the shielding plates 34 to 39 attached to the front surface of the base plate 23 do not interfere with the rear part of the center accessory 13. As a result, the depth dimension of the stage 131 in the center accessory 13 can be increased, and various movements of the game ball can be made, so that the fun of the game can be further improved.

  The rotation plate 26 is formed in a disk shape by a transparent acrylic resin plate, and is aligned with the rear of the display window 12 and centered on a virtual rotation axis O facing in the front-rear direction substantially matching the center of the display window 12. It is supported by the base plate 23 so that it can rotate. Thereby, even if the rotating plate 26 is arranged so as to be aligned with the display window 12, the rotating plate 26 does not block the visual recognition of the identification information 100 from the display window 12.

On the outer periphery of the rotary plate 26, external teeth 261 that can be engaged with the sector gears 28 to 33 and four arm portions 262 to 265 projecting in the radial direction are provided.

  An outer tooth 262 a that meshes with a small gear 251 provided integrally with the relay gear 25 is provided on the outer peripheral edge of the upper left arm portion 262.

  The outer peripheral edge of the upper left arm portion 262 is provided by a pressing member 44 rotatably provided on a shaft 43 for pivotally supporting the relay gear 25 on the base plate 23, and the outer peripheral edge of each arm portion 263 to 265 is a base. It is clamped in the front-rear direction by each pressing member 40 rotatably provided on each shaft 41 facing the front-rear direction fixed to the play 23. Thereby, the rotating plate 26 is supported by the base plate 23 so as to be able to rotate at a predetermined angle around the virtual rotation axis O so as not to rattle in the front-rear direction.

Note that the support means for supporting the rotating plate 26 so as to be able to rotate about the virtual rotation axis O is replaced with holding the vicinity of the outer periphery of the rotating plate 26, that is, the outer peripheral edges of the arm portions 262 to 265. Thus, the outer peripheral edge of the rotating plate 26 may be directly sandwiched.

Around the rotating plate 26 in the base plate 23, six support shafts 27 facing in the front-rear direction for rotatably supporting the sector gears 28 to 33 and the shielding plates 34 to 39 on the base plate 23 are fixed at equal intervals. Yes.

The sector gears 28 to 33 and the shielding plates 34 to 39 are integrally rotatable, are rotatably supported by the respective support shafts 27, and are point-symmetric with respect to the virtual rotation axis O of the rotation plate 26. It is arranged to become.

The sector gears 28 to 33 mesh with the external teeth 262a of the rotating plate 26, respectively, and are synchronized with the rotation of the rotating plate 26 from the open position shown in FIG. 8 to the shielded position shown in FIGS. Rotate simultaneously in the same direction around the pivot 27.

On the arc-shaped outer peripheral edges of the sector gears 28 to 33, flange portions 28 a to 33 a that can alternately slide in the front-rear direction with respect to the side surfaces of the external teeth 261 of the rotating plate 26 are provided. Specifically, the sector gears 28, 30, and 32 are provided with flange portions 28 a, 30 a, and 32 a that are in sliding contact with the rear side surfaces of the external teeth 261, and the sector gears 29, 31, and 33 are provided with front portions of the external teeth 261. The flange parts 29a, 31a, and 33a which are in sliding contact with the side surfaces are provided. Thereby, the backlash of the rotating plate 26 in the front-rear direction can be suppressed, and the engagement between the sector gears 28 to 33 and the external teeth 261 of the rotating plate 26 can be ensured.

The shielding plates 34 to 39 are substantially bow-shaped in front view, and in synchronization with the rotation of the rotating plate 26, together with the sector gears 28 to 33, from the open position shown in FIG. 8 to the shielding position shown in FIGS. On the other hand, they rotate simultaneously in the same direction around the pivot 27.

  When the shielding plates 34 to 39 are in the open position, the swinging end of the shielding plates 34 to 39 is retracted to the outside of the rotating plate 26 so that the identification information 100 is visually recognized from the display window 12. Further, when it is in the shielding position, the swinging end portion is located in the vicinity of the virtual rotation axis O, and the display window 12 is shielded except for the vicinity of the center thereof. Visibility is disabled. Thereby, since each shielding plate 34-39 can open and close the display window 12 only by rotating only the moving stroke substantially equivalent to the radius of the display window 12 and the rotating plate 26, the motor 24, each shielding plate It is possible to quickly open and close the display window 12 while reducing the burden on the lines 34 to 39.

Further, since the sector gears 28 to 33 and the shielding plates 34 to 39 are arranged so as to be point-symmetric with respect to the virtual rotation axis O of the rotating plate 26, each shielding plate 34 is increased with an increase in the size of the display window 12. Even if .about.39 is increased, each of the shielding plates 34 to 39 can be quickly rotated to each position with a small force by the small motor 24 with a small output.

That is, when the sector gears 28 to 33 and the shielding plates 34 to 39 are arranged so as to be point symmetric with respect to the virtual rotation axis O of the rotating plate 26, the rotational moment due to its own weight is caused between the shielding plates in the point symmetric positions. Act in opposite directions. Thus, as shown in FIG. 8, when the shielding device 20 is in an open state, for example, a rotational moment due to its own weight acts on the shielding plate 35 counterclockwise (arrow A direction) about the support shaft 27. In addition, a rotational moment due to its own weight acts on the shielding plate 38 that is point-symmetric with respect to the shielding plate 35 in the clockwise direction (in the direction of arrow B) about the support shaft 27. The rotation moment acting on the shielding plate 35 is transmitted to the rotation plate 26 via the sector gear 29 so as to act clockwise (arrow C direction), and the rotation moment acting on the shielding plate 38 is Then, it is transmitted via the sector gear 32 so as to act counterclockwise (arrow D direction) with respect to the rotating plate 26. As a result, the rotational moments transmitted to the rotating plate 26 cancel each other, so the rotating plate 26 is rotated by the small motor 24 with a small output, and the shielding plates 34 to 39 are lightly moved to the open position and the shielding position. It can be quickly rotated by force.

7 to 10, 45 is a sensor that detects the open position of the shielding plate 39. When the sensor 45 detects the open position of the shielding plate 39, the power supply to the motor 24 is stopped.

  Next, operation | movement of the shielding apparatus 20 in this embodiment is demonstrated. As shown in FIG. 8, when the shielding device 20 is in the open state, the shielding plates 34 to 39 are in the open position, and as shown in FIGS. 12, the identification information 100 displayed on the display unit 301 is visible.

  When the motor 24 rotates forward from the open / closed state, the rotation is transmitted to the rotating plate 26 via the relay gear 25. The rotary plate 26 rotates around the virtual rotation axis O by a predetermined angle (an angle corresponding to the number of external teeth 262a of the arm portion 262) from the open position shown in FIG. In synchronization with this, all the shielding plates 34 to 39 are simultaneously rotated from the open position toward the virtual rotation axis O via the sector gears 28 to 33 and stopped at the shielding position. Then, as shown in FIG. 4, the display window 12 is shielded so that the identification information 100 displayed on the display unit 21 is hidden from view from the display window 12.

  Further, when the motor 24 rotates in the reverse direction from the shielded state, the rotation is transmitted to the rotating plate 26 via the relay gear 25. The rotating plate 26 rotates about a virtual rotation axis O from the shielding position shown in FIG. In synchronism with this, all the shielding plates 34 to 39 are simultaneously rotated from the shielding position toward the outer periphery of the rotating plate 26 via the sector gears 28 to 33 and stopped at the open position. 12 is released.

As an opportunity to open and close the shielding device 20, for example, the gaming state is a reach state (two pieces of identification information 100 are confirmed and displayed with the same design, and the remaining one piece of identification information 100 is the two pieces of identification information. If it is confirmed and displayed with the same design as 100, a state where there is a possibility of a big hit is possible. In such a case, when the gaming state becomes the reach state, each of the shielding plates 34 to 39 is moved from the open position to the shielding position, so that the identification information 100 displayed on the display unit 301 is concealed and cannot be visually recognized. And Then, after the predetermined time has elapsed, when the last piece of identification information 100 is stopped and confirmed and displayed, the respective shielding plates 34 to 39 are rotated from the shielding position to the open position, and the identification that has been concealed until then is performed. By making the information 100 suddenly visible, it is possible to enhance the effect of reaching at the time of reaching.

As mentioned above, although one Embodiment of this invention was described, it is possible to give the following various deformation | transformation and change with respect to this Embodiment within the range which does not deviate from the summary of this invention.
(I) When the shielding plates 34 to 39 are in the shielding position, the entire area of the display window 12 is shielded.
(Ii) The number of the shielding plates 34 to 39 is appropriately changed. In this case, it is preferable to use an even number.

1 is a front view of a ball game machine to which an embodiment of the present invention is applied. It is a perspective view of a ball game machine with the game board removed from the game machine frame. It is a front view of a game board when a shielding apparatus exists in an open state. It is a front view of a game board when a shielding apparatus is in a shielding state. It is a back view of a game board when a shielding apparatus is in a shielding state. It is a disassembled perspective view of the shielding apparatus seen from diagonally forward. It is a disassembled perspective view of the shielding apparatus seen from diagonally back. It is a front view of the shielding apparatus when it exists in an open state. It is a front view of the shielding apparatus when it exists in a shielding state. It is a reverse view of the shielding apparatus in a shielding state. It is a longitudinal section schematic diagram of a game board. It is the XII-XII line longitudinal cross-sectional view in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ball game machine 2 Game machine frame 3 Display apparatus 4 Game area 5 Game board 6 Front door 7 Handle 8 Ball storage tray 9, 10 Guide rail 11 Game nail 12 Display window 13 Center accessory 14 Normal symbol operation gate 15 Winning mouth 16 Symbol starting port 17 Large winning device 18 Out port 19 Upper set plate 20 Shielding device 21 Lower set plate 22 Bolt 23 Base plate 24 Motor 25 Relay gear 26 Rotating plate 27 Shafts 28-33 Sector gears 28a-33a Hooks 34-39 Shielding Plate 40 Holding member 41 Shaft 42 Printed circuit board 43 Shaft 44 Holding member 45 Sensor 51 Auxiliary display window 61 Glass plate 100 Identification information 121 Transparent plate 131 Stage 132 Drop port 133 Discharge port 134 Warp port 191 Opening 192 Mounting portion 211 Discharge path 231 Opening 251 Small gear 261 External teeth 262 to 265 Arm 62a external tooth 301 display unit O imaginary rotation axis

Claims (3)

A display device capable of displaying identification information relating to a game, a game board having a circular display window provided in front of the display device and allowing the identification information to be visually recognized, and the display window and the display device An open state in which the display window is opened to make the identification information visible, and a shielding state in which a part or all of the display window is shielded to make part or all of the identification information invisible In a ball game machine equipped with a displaceable shielding device,
The shielding device is
A base plate that is directly or indirectly fixed to the back side of the game board and has an opening that allows the identification information displayed on the display device by being superimposed rearward with respect to the display window to be visible through the display window. When,
A motor capable of forward and reverse rotation disposed on the front surface of the base plate facing the back surface of the game board ;
And having external teeth on the outer circumference, is supported on the base plate for rotation around a virtual rotation axis facing the front-rear direction approximately matches the center of the display window, around the imaginary rotation axis by the power of the motor A circular rotating plate capable of rotating a predetermined angle;
It is pivotally supported on the front surface of the base plate and around the rotating plate by pivots facing in the front-rear direction, and is engaged with the external teeth of the rotating plate and synchronized with the rotation of the rotating plate. A plurality of swingable sector gears,
In the front surface of the base plate displays a swingable to said plurality of sector gear and said support shaft around integrally respectively, in synchronization with the rotation of the rotary disc, to open the display window the display device some or all of the identification information open position and visible through the opening of the display window and the base plate, the identification information displayed on the shields a part or all of the display window the display device to be And a plurality of shielding plates that can be moved to a shielding position that makes it invisible ,
The rotating plate is disposed on the front surface of the base plate so as to be located in front of the opening of the base plate and directly behind the display window.
When the plurality of shielding plates are in the open position, the respective swing end portions are at positions outside the outer periphery of the rotating plate, and the back surface side of the game board and the front surface of the base plate The display window is opened by being positioned between the display windows, and when in the shielding position, the respective swinging end portions are concentrated in the vicinity of the virtual rotation axis so that part or all of the display window is Shielding
Each of the plurality of sector gears has a flange portion that alternately slides in the front-rear direction with respect to the side surface of the external tooth of the rotating plate, and that can suppress rattling in the front-rear direction of the rotating plate. A ball game machine. It said rotary plate, ball-shooting game machine according to claim 1, characterized by forming into a disk shape by transparent synthetic resin material. The shielding device, so that the rotating plate can rotate around the imaginary rotation axis, according to claim 1, wherein further comprising a support means for supporting the outer circumference or near the rotating plate A ball game machine.

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