JP2002045543A - Pinball game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent malinfluence on various kinds of substrates for control, or the like that control a game due to noise by breaking electromagnetic noise being generated in the ball passage of a putting out device and a game ball traveling in the putting out device due to electrostatic discharge by static electricity, and reinforcing countermeasures against noise. SOLUTION: A copper-plated layer 55 is formed on the inner and outer surfaces of a case 50 for forming a zigzag ball passage 50e of the putting out device 35. Therefore, when the case 50e is made of such insulating member as a synthetic resin, and a game ball 50e supplied to the zigzag ball passage 50e from a tank rail due to fall, especially the right radiation of the putting out device of the electromagnetic noise can be effectively broken by the double plated layer 55 even if electromagnetic noise is generated by electrified static electricity, thus reliably preventing the malinfluence on the plurality of substrates for control being arranged at the right side of the putting out device 35 and reinforcing countermeasures against noise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball game machine, and in particular, absorbs and blocks electromagnetic noise generated by electrostatic discharge due to static electricity charged on a game ball moving in a ball passage of a payout device, and takes measures against the noise. Concerning those that have been strengthened.

[0002]

2. Description of the Related Art Conventionally, in a ball-and-ball game machine such as a pachinko machine, a back mechanism plate is detachably mounted on the back side of a front frame.
A ball tank and a tank rail extending therefrom are provided above the back mechanism plate, and game balls conveyed from game ball conveyance paths provided for each island structure of the pachinko hall are supplied to the ball tank. . A payout device for paying out game balls is provided on a side portion of the back mechanism plate, and a payout ball passage connected to the payout device is provided below the back mechanism plate. Therefore, when a game ball wins the prize means, the payout device is driven, a predetermined number of game balls are paid out as a prize ball through the ball passage of the payout device, and these paid out game balls pass through the payout ball passage. The ball is discharged from the upper plate outlet to the ball tray.

[0003] In addition, out balls and winning balls used for ball games are collected at the hole side through a game ball collection path, polished by a polishing device, and then returned to a ball tank via a game ball conveyance path. It is being supplied. By the way, in addition to the game ball transport path for supplying the game ball to the ball tank, the payout ball passages such as the tank rail and the ball passage of the payout device are made of synthetic resin, so that the game balls are polished by a polishing device. The generated static electricity is charged on the game ball, or when the game ball is brought into frictional contact with the transfer path or the game ball or collides with the transfer path or the game ball during the transfer along the game ball transfer path on the hole side, the static electricity is generated. This may cause the game balls to be charged (so-called contact charging).

Further, the conveyed game balls are supplied into the ball tank by dropping, and when the ball is supplied from the ball tank to the next tank rail by dropping, the game ball is supplied only to the ball tank or the tank rail. In addition, static electricity is also generated when the ball collides with the game ball, and furthermore, when the ball moves along the meandering ball passage of the dispensing device, and when the game ball comes into frictional contact with the passage wall of the ball passage or the game ball. Is generated, and there is a high possibility that the static electricity is charged to the game ball.

[0005] This means that the game ball is a metal, but when moving along a path of an insulator made of synthetic resin while frictionally contacting or colliding with the path or the game ball, some static electricity generated in the game ball is generated. Although the sphere moves to the insulator passage, static electricity is also charged to the insulator passage, but the game sphere moving in the ball passage of the payout device is likely to be charged with static electricity.

As described above, when a game ball charged with static electricity moves sequentially from a ball tank to a tank rail or a payout device, the game ball collides with or separates from the game ball or the ball tank. Point concentrated discharge occurs in the air.
As a result, electromagnetic wave noise is generated due to the generation of a magnetic field, which has an adverse effect on control signals of various control units that control game control, and the control units may stop operating or malfunction. Therefore, conventionally, a metal plate is provided in a part of a payout ball passage where a game ball such as a ball tank, a tank rail or the like collides during movement and static electricity is likely to be generated, so that the metal ball can be brought into contact with the game ball, and the inner frame is formed outside. The hinge metal rotatably connected to the frame and the metal plate are brought into contact with a ground line so that the static electricity charged on the game ball is grounded to the hinge metal.

[0007]

As described above, a metal plate is provided in a part of a payout ball passage through which a game ball is easily contacted during movement, and static electricity charged to the game ball is transferred to the metal plate and the ground line. At this time, the hinge fittings of the inner frame are grounded to escape, but since the hinge fittings are small and not a full-scale grounding plate, a sufficient grounding effect is not obtained at present. Therefore, the noise of the electromagnetic waves generated by the electrostatic discharge of the moving game ball has an adverse effect on various control boards and the like that control the game control, which causes a problem that the game control is hindered. .

[0008] Further, the electromagnetic noise due to the static electricity that has stopped in the passage such as the tank rail or the ball passage of the dispensing device, which is an insulator, also adversely affects the game control.
An object of the present invention is to cut off electromagnetic wave noise generated by electrostatic discharge due to static electricity charged on a ball passage of a payout device and a game ball moving the payout device so that noise countermeasures can be strengthened, and game control is performed. It is possible to prevent adverse effects of various noises on various control boards and the like that control the control boards.

[0009]

According to a first aspect of the present invention, there is provided a ball game machine comprising: a plurality of control boards each formed on an independent board in accordance with control contents of game control; and a game ball supplied from outside. In a ball game machine having a ball tank for temporarily storing and a payout device for paying out a game ball supplied from the ball tank to a player side, a game ball moving on a ball passage of the payout device is charged. A conductive member is provided at a predetermined portion of a case forming a spherical passage so as to block electromagnetic wave noise generated by electrostatic discharge of the generated static electricity.

[0010] The plurality of control boards are formed as independent boards, and game control is executed by these control boards. The game balls supplied from the outside are supplied to the ball tank by dropping and temporarily stored therein, and the game balls in the ball tank are paid out to the player side by the payout device via the tank rail. By the way, since the ball passages of these ball tanks and the dispensing device are made of insulating material such as synthetic resin, when the game balls supplied to the ball tank are supplied to the dispensing device via the tank rail, the tank rails and the dispensing device are used. Further, there is a case where static electricity is generated by frictionally contacting or colliding with the game ball, and the static electricity is charged on the game ball or the passage wall (so-called contact charging).

When a game ball collides with or separates from a game ball or a passage wall of a payout device, a point-concentrated discharge occurs with the game ball, or an electrostatic discharge occurs in the air, thereby generating a magnetic field. Causes electromagnetic noise. However, since the conductive member is provided at a predetermined portion of the case forming the ball passage of the dispensing device, electromagnetic wave noise due to static electricity charged on the game ball in the ball passage of the dispensing device is reliably blocked by the conductive member. Therefore, noise countermeasures for a plurality of control boards can be strengthened.

Here, when the predetermined portion is at least one of an inner surface and an outer surface of the case (claim 2),
Since at least one of the inner surface and the outer surface of the case is formed of a conductive member, the conductive member can effectively block radiation of electromagnetic wave noise due to static electricity charged on the game ball in the ball passage of the dispensing device. . Therefore, noise measures for a plurality of control boards can be strengthened.

In the case where the predetermined portion is at least one of an inner surface and an outer surface of the side wall of the case facing the control board, the side wall of the case facing the control board may be provided. Since at least one of the inner surface and the outer surface is formed of a conductive member, the conductive member can effectively radiate electromagnetic wave noise due to static electricity charged to the game ball in the ball passage of the dispensing device, particularly to the control substrate side. Can be shut off. Therefore, it is possible to enhance measures against noise for a plurality of control boards arranged on the side wall portion side of the dispensing device.

In the case where the conductive member is provided along the inner surface of the case including the spherical passage (claim 4), the conductive member is simply provided along the inner surface of the case including the spherical passage. Thus, noise countermeasures can be strengthened.

Further, when the conductive member is provided along the inner surface of the side wall portion facing the control substrate, the conductive member may be provided along the inner surface of the side wall portion facing the control substrate. , Noise measures can be enhanced.

In the case where the conductive member is made of a conductive film (claim 6), the conductive film can be easily formed, and the static electricity charged on the game ball moving in the ball passage inside the case can be used. Even when electromagnetic noise is generated, the electromagnetic noise can be effectively absorbed and blocked by the conductive coating.

Further, when the conductive member is made of a thin metal plate (claim 7), the conductive member is made of a thin metal plate.
The shielding performance against the generated electromagnetic wave noise can be improved, and even if the electromagnetic wave noise is generated by the static electricity charged in the game ball moving in the ball passage inside the case, the electromagnetic wave noise is effectively absorbed by the metal plate Can be shut off.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is an example in which the present invention is applied to a first-class pachinko machine called a card-type ball game machine installed in an island structure of a pachinko hall, and an island structure provided in a pachinko hall. In
A plurality of card-type ball lending machines 1 and a plurality of pachinko machines 2 are alternately arranged in the length direction, and the card-type ball lending machine 1 is electrically connected to the pachinko machine 2.

As shown in FIGS. 1 to 4, a pachinko machine 2 which is a card-type ball game machine has a rectangular frame-shaped outer frame 3 and a front frame 4 pivotally attached to the outer frame 3 so as to be openable and closable. The outer frame 3 is detachably attached to an island structure (not shown) in a state where the card-type ball lending machine 1 is sandwiched therebetween.
A game board 5 is detachably attached to the front frame 4 from the back side,
A glass door 6 having a window 6a and a front plate (not shown) of a ball tray 8 are pivotally connected to the front side of the game board 5 so as to be openable and closable, respectively. A game ball 25 for firing is provided on its front panel.
Is mounted on the ball receiving tray 8 for storing
A lower plate 9 for storing game balls 25 overflowing or withdrawn from the ball tray 8 and a firing handle 11 of a firing means 10 are provided.

The firing means 10 includes a firing handle 11 which can be rotated and a firing motor (not shown) for firing a game ball 25 with a hitting hammer 12 with a hitting force corresponding to the turning angle of the firing handle 11. Have. An operation panel 14 for lending the ball to the card-type ball lending machine 1 is provided on the right side of the ball tray 8, and the operation panel 14 has a remaining card display section 14a for displaying the remaining card with three digits.
And a ball lending switch 14b for instructing a ball lending of a predetermined amount of game balls 25, and a return switch 14c for instructing a card return at the end of the game.

As shown in FIG. 2, the game board 5 is provided with a substantially annular guide rail 15 comprising an outer rail and an inner rail made of metal, and a game area 5a inside the guide rail 15 has Color liquid crystal display 16, symbol starting means (symbol starting and winning means) 17, opening and closing winning means (large winning means) 18, a plurality of normal winning means 19 (in this case, in addition to the normal winning means 19 in the upper stage, opening and closing type Winning Means 1
For example, on the left and right sides of 8, for example, six ordinary winning means 19),
Two gates 20 (passing ports) and the like are respectively provided at predetermined positions.

The liquid crystal display 16 functions as a symbol display means 22 for displaying a variable symbol and displaying a background image and moving images of various characters. The symbol display means 22 displays the background image and the character in an animated manner and, for example, three (left, middle,
On the condition that the game ball 25 wins the symbol starting means 17, the display symbols of the symbol display portions 22 a to 22 c are displayed in a variable manner (scroll display) for a predetermined time on condition that the game ball 25 wins. Then, the game is stopped in the stop symbol pattern determined based on the lottery result according to the winning timing of the game ball 25 to the symbol starting means 17.

Immediately above the liquid crystal display 16, ordinary winning means 19 and second symbol display means 23 are provided. The second symbol display means 23 has an ordinary symbol display section for displaying one ordinary symbol, and the game ball 2 which has passed the
When 5 is detected, the display symbol of the normal symbol display section fluctuates for a predetermined time, and displays the stop symbol determined by the lottery value selected at the time when the game ball 25 passes through the gate 20 to stop. Has become. Symbol starting means 17
Is a motorized tulip having a pair of left and right openable pawls 17a that can be opened and closed. When the stop symbol after the change of the second symbol display means 23 hits and the symbol is displayed, the open / close nail 17a is opened.
Is released only for a predetermined time, making it easier to win a prize.

The opening / closing type winning means 18 has an opening / closing plate 18a which can be opened forward, and when the stop symbol after the change of the symbol display means 22 is a winning symbol such as "777", a special game called "big hit" is played. Starting, the opening / closing plate 18a is opened forward. There is a specific area 18b inside the open / close type winning means 18, and when a winning ball passes through the specific area 18b, the special game is continued.

After the opening / closing plate 18a of the opening / closing type winning means 18 is opened, a predetermined time has elapsed or a predetermined number (for example, 1)
(0) when the game ball 25 wins and the opening / closing plate 18a closes, the special game ends when the game ball 25 does not pass through the specific area 18b. The special game is continued up to a predetermined number of times (for example, 16 times), and the state is controlled to be advantageous to the player.

As shown in FIGS. 3 and 4, on the back side of the front frame 4, a back mechanism plate 30 for holding the game board 5 from the back side is detachably mounted. The back mechanism plate 30 has an opening 30a. A ball tank 33 and a tank rail 34 extending therefrom are provided on the upper side thereof, and a dispensing device 35 connected to the tank rail 34 is provided on a side portion of the back mechanism plate 30. On the side, a passage unit 36 connected to the payout device 35 is provided. Dispensing device 3
The game balls 25 paid out from 5 are paid out to the ball tray 8 via a winning ball payout passage (not shown) of the passage unit 36.

Here, the ball tank 33 and the ball passage 75e of the payout device 35 for paying out the game balls 25 supplied from the ball tank 33 to the player are made of synthetic resin (insulator). Therefore, the game ball 25 becomes the tank rail 34
When the game ball 25 frictionally contacts or collides with the tank rail 34, the ball passage 75e, and the game ball 25 while moving in the ball passage 75e inside the payout device 35, static electricity is generated. In many cases, not only the game balls 25 but also the ball passages 75e of the payout device 35 are charged.

At the opening 30a of the back mechanism plate 30, a back cover 37 mounted on the back side of the game board 5 and the winning means 17 to
A prize ball discharge gutter (not shown) for discharging the game ball 25 which has won the prize 19 is respectively fitted. A main control board 39 is provided inside a case 38 mounted on the back cover 37, and a symbol control board 40 is provided in front of the main control board 39. Below the main control board 39, a lamp control board 42 is provided inside a case 41a attached to the back cover 37, and a sound control board 43 is provided inside a case 41b adjacent to the case 41a.

A power supply board 45 and a payout control board 46 are provided inside the case 44 mounted on the back mechanism plate 30 below the cases 41a and 41b. Further, a firing control board 48 is provided inside a case 47 mounted on the rear side of the firing means 10. The control boards 39 to 40, 42 to 43, 45 to 46, 48 are each composed of an independent printed board, and the control boards 39, 40, 42,
43 and 46 each include a CPU, a ROM, a RAM, and the like.
Microcomputers (not shown) each comprising a chip integrated circuit are provided.

The main control board 39 and other control boards 40,
42, 43, and 46 are electrically connected to each other through connectors by a plurality of signal lines, and are used to cause the control boards 40, 42, 43, and 46 to execute predetermined game operations from the main control board 39. Control commands can be transmitted by one-way communication. By adopting one-way communication of control commands,
It is possible to reliably prevent improper operation related to symbol stoppage, significantly reduce the control load on the main control means, and simplify transmission control.

A main control means is formed on the main control board 39 and controls so-called game control of the game board 5 relating to input / output of signals to various game parts, game ball detection switches and the like provided on the game board 5. Mainly governs. A symbol control means is formed on the symbol control board 40, and the liquid crystal display 16 is controlled based on a symbol control command transmitted from the main control means.
Or display control for displaying various moving images and background images, and variably controlling the symbols of the symbol display portions 22a to 22c,
The fluctuation is stopped and controlled by the designated control symbol.

A lamp control means is formed on the lamp control board 42 and controls the lighting of a lamp group including a large number of display lamps provided on the game board 5 and the like. Sound control board 4
A sound control means 3 is provided on 3 and controls sound output for various kinds of sound effects to speakers. A launch control means is formed on the launch control board 48, and controls the launch control of the game balls 25 by driving the launch motor.

Next, a payout device 35 disposed vertically at the left end of the tank rail 34 and paying out game balls 25 in response to a payout command will be described. In this case, the ball tank 3
The game balls 25 stored in 3 are supplied to the payout device 35 through two passages via the tank rail 34,
The configuration is such that the game ball 25 can be quickly paid out by the two ball passages 75e of the payout device 35. As shown in FIGS. 5 and 6, the dispensing device 35 is a unit having a predetermined width and a box shape that is long in the vertical direction and made of synthetic resin. The case 50 includes a right case 50b and a left case 50 with a central partition wall 50a interposed therebetween.
c.

The right case 50b and the left case 50
c, there is one (one) ball passage 50 independent of each other.
e is formed in a meandering shape to the vicinity of the lower end, and the game balls 25 paid out by the payout device 35
Through the dispensing ball passage 50f at the lower end where the 0e has joined.
It is paid out to the winning ball payout passage (not shown) of the next passage unit 36. Since the internal structures of the right case 50b and the left case 50c are symmetrical and the same, the right case 50b will be described. Inside the right case 50b, a single meandering spherical passage 50e in a side view is formed by a meandering passage wall 50d.

The meandering spherical passage 50 of the dispensing device 35
Downstream from the middle of e, a payout rotating body 51 that sequentially pays out two game balls 25 by rotation is pivotally supported by the case 50. The payout rotating body 51 is driven to rotate in a predetermined rotation direction at the time of payout by a payout motor 52 composed of a stepping motor. In the first half immediately above the payout ball passage 50f, a prize ball detection sensor 53a for detecting the game ball 25 to be paid out as a prize ball is supported by the right case 50b, and is paid out as a lending ball in the latter half thereof. A rental ball detection sensor 53b that detects the game ball 25 is supported by the right case 50b.

The payout rotating body 51 and the two detection sensors 53a,
A payout switching blade 54 is provided in the payout ball passage 50f between 53b, and the payout switching blade 54 is pivotally supported at its lower end so as to swing back and forth. The payout switching blade 54 is switched to a prize ball payout state shown by a solid line when a switching solenoid actuator (not shown) is driven,
When the switching solenoid is not driven, it is switched to the rental ball payout state shown by the two-dot chain line. Therefore, the game ball 25 paid out as a prize ball can be detected by the prize ball detection sensor 53a, and the game ball 25 paid out as a rental ball can be awarded and detected by the ball detection sensor 53b.

As shown in FIGS. 5 and 6, the entire surface of the synthetic resin case 50 of the dispensing device 35, that is, including the meandering passage wall 50d, includes a partition wall 50a, a right case 50b, and a left case 50c. The copper plating layer 55 is uniformly formed on all of the inner surface and the outer surface. In this case, since the case 50 is made of synthetic resin, the case 50
First, a conductive film is formed on the inner surface and the outer surface, and then a plating process is performed to form a plating layer 55. Here, the plating layer 55 corresponds to a conductive film. Further, the plating layer 55 may be a conductive plating layer of an aluminum alloy, a copper alloy, or the like.

Next, the meandering spherical passage 50 of the dispensing device 35
The action of shielding (shielding) electromagnetic wave noise due to static electricity charged on the game ball 25 and the case 50 moving e will be described. The game balls 25 polished by the hole-side polishing device (not shown) are supplied to a ball tank 33 via a game ball transfer path (not shown), which is an insulator, and are temporarily stored therein. Is supplied to the dispensing device 35 through

The plurality of game balls 25 supplied to the ball passage 50e of the payout device 35 include static electricity generated when the ball is polished by the polishing device, the middle of the conveyance in the game ball conveyance path, or the ball tank 33 or the like. Tank rail 34 and ball passage 5
When the game ball 25 is supplied by dropping, the game ball 25 generates friction when it comes into frictional contact or collision with the synthetic resin ball tank 33, the tank rail 34, the ball passage 50e, and the game ball 25, The generated static electricity is the game ball 2
5 is highly charged (so-called contact charging), and the static electricity may also be charged to the case 50.

In this case, although the game ball 25 is made of metal, the degree of friction at the curved portion 50g of the ball passage 50e becomes large, and large static electricity is generated, and some of the generated static electricity is transferred to the passage wall 50d and charged. However, the static electricity may be mainly charged on the game ball 25, and the game ball 25 is charged in the ball passage 50e of the case 50 in this charged state.
Move in a meandering shape along In a state where the game ball 25 has a large amount of static electricity, the game ball 25 and the passage wall 50d
When moving along the ball path 50e while colliding with or moving away from the game ball 25, point-discharge is performed with the approaching game ball 25, or electrostatic discharge is performed in the air.

As a result, electromagnetic wave noise is generated due to the generation of the magnetic field. Further, noise may occur due to static electricity charged in the case 50. However, since the plating layer 55 is formed on the inner surface and the outer surface of the case 50, the noise of the electromagnetic waves generated by the static electricity charged on the game ball 25 and the case 50 is reliably blocked (shielded) by the double plating layer 50. In particular, emission of electromagnetic noise to the right of the dispensing device 35 can be suppressed. Therefore, it is possible to reliably prevent the plurality of control boards 39, 40, 42, 43, and 46 disposed on the right side of the payout device 35 from being adversely affected by noise.

As described above, since the copper plating layers 55 are formed on the inner surface and the outer surface of the case 50 forming the meandering spherical passage 50e of the dispensing device 35, the case 50 is an insulating member such as a synthetic resin. When the game ball 25 supplied from the tank rail 34 is charged with static electricity by falling into the meandering ball passage 50e, even if electromagnetic noise is generated by the charged static electricity,
In particular, radiation to the right of the dispensing device 35 is applied to the double plating layer 5.
5 can effectively block. Therefore, the plurality of control boards 39, 4 arranged on the right side of the payout device 35
It is possible to reliably prevent the adverse effects of the noise on 0, 42, 43, and 46, and to strengthen the noise countermeasures.

A description will be given of a modified form in which the above-described embodiment is partially modified. 1) A thin metal film may be formed on the inner or outer surface of the case 50 of the dispensing device 35 by vacuum evaporation by evaporating copper or aluminum metal. 2] As shown in FIG. 7, the case 50 of the payout device 35A
The plating layer 55A may be formed on the right side wall facing the control boards 39, 40, 42, 43, 46 of A, that is, the entire inner surface of the right side wall 50h of the right case 50b. Further, a plating layer 5 is formed on the entire outer surface of the right side wall 50h.
5A may be formed.

3] As shown in FIG. 8, the payout device 35B
Control boards 39, 40, 42, 43,
A conductive member 45 made of a thin copper plate may be detachably attached to the entire outer surface of the right side wall facing the 46, that is, the entire right side wall 50h of the right case 50b. In this case, a plating layer may be formed on the inner surface of the right side wall 50h. 4] Cases 50, 5 of payout devices 35, 35A, 35B
An antistatic agent may be sprayed on at least one of the inner and outer surfaces of 0A and 50B, or a thin-film conductive sheet made of conductive rubber or resin mixed with metal pieces may be adhered.

5] The cases 50, 50A, 50B of the dispensing devices 35, 35A, 35B may be made of a conductive resin (conductive member) such as a conductive rubber or a resin mixed with metal pieces. 6] The present invention is not limited to the above-described embodiments and modifications, and various modifications may be made without departing from the spirit of the present invention. The present invention can be applied to various ball and ball game machines such as ball machines.

[0046]

According to the first aspect of the present invention, since a plurality of control substrates, a ball tank, and a dispensing device are provided, and a conductive member is provided at a predetermined portion of a case forming a ball passage of the dispensing device, When the case forming the ball passage of the ball tank or the dispensing device is an insulating member such as a synthetic resin, and electromagnetic noise is generated due to electrostatic discharge of static electricity charged on the game ball moving in the ball passage of the case. However, the electromagnetic noise can be reliably blocked by the conductive member, and the adverse effects of the noise on the control signals and the like of the plurality of control boards that control game control can be reliably prevented. Therefore, noise measures for a plurality of control boards can be strengthened.

According to the second aspect of the present invention, since the predetermined portion is at least one of the inner surface and the outer surface of the case, at least one of the inner surface and the outer surface of the case is formed of a conductive member. The radiation of electromagnetic wave noise due to static electricity charged on the game ball in the ball passage of the device can be effectively blocked by the conductive member. Therefore, noise measures for a plurality of control boards can be strengthened. The other effects are the same as those of the first aspect.

According to the third aspect of the present invention, the predetermined portion is at least one of the inner surface and the outer surface of the side wall portion facing the control board of the case. Since at least one of the inner surface and the outer surface is formed of a conductive member, the conductive member can effectively radiate electromagnetic wave noise due to static electricity charged to the game ball in the ball passage of the dispensing device, particularly to the control substrate side. Can be shut off. Therefore, it is possible to enhance measures against noise for a plurality of control boards arranged on the side wall portion side of the dispensing device. Other effects are the same as those of the second aspect.

According to the fourth aspect of the present invention, since the conductive member is provided along the inner surface of the case including the spherical passage,
By simply providing the conductive member along the inner surface of the case including the spherical passage, noise countermeasures can be enhanced. Other effects similar to those of any one of the first to third aspects are exhibited. Claim 5
According to the invention, since the conductive member is provided along the inner surface of the side wall portion facing the control substrate, the conductive member is provided only along the inner surface of the side wall portion facing the control substrate. Thus, noise countermeasures can be strengthened. Other effects similar to those of any one of the first to third aspects are exhibited.

According to the sixth aspect of the present invention, since the conductive member is made of a conductive film, the conductive film can be easily formed, and the game ball moving in the ball passage inside the case is charged by static electricity. Even when electromagnetic noise is generated, the electromagnetic noise can be effectively absorbed and blocked by the conductive coating. In addition, the same effect as any one of the first to fifth aspects is obtained.

According to the seventh aspect of the present invention, since the conductive member is made of a thin metal plate, the thin metal plate can enhance the shielding property against generated electromagnetic wave noise, and furthermore, the inside of the case can be improved. Even when electromagnetic wave noise is generated due to static electricity charged on the game ball moving in the ball passage, the electromagnetic wave noise can be effectively absorbed by the metal plate and cut off. In addition, the same effect as any one of the first to fifth aspects is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a pachinko machine (ball game machine) according to an embodiment of the present invention.

FIG. 2 is a front view of a game board of the pachinko machine.

FIG. 3 is a rear view of the pachinko machine.

FIG. 4 is a side view of the pachinko machine.

FIG. 5 is a front view of the dispensing device.

FIG. 6 is a vertical sectional side view taken along line FF of FIG. 5;

FIG. 7 is a partially cutaway view corresponding to FIG. 5 according to a modified embodiment.

FIG. 8 is a partial cutaway view corresponding to FIG.

[Explanation of symbols]

 2 Pachinko machine (ball game machine) 25 Game ball 35 Payout device 39 Main control board 40 Symbol control board 42 Lamp control board 43 Sound control board 46 Payout control board 50 Case 50h Side wall 50e Meandering ball passage 55 Plating layer 55A Plating Layer 56 conductive member

Claims (7)

[Claims] A plurality of control boards (39, 40, 42, 43, 46) each formed on an independent board according to the control content of game control.
And a ball tank (33) for temporarily storing a game ball (25) supplied from the outside, and a payout device (payout device (Pa) for paying the game ball (25) supplied from the ball tank (33) to the player side (35, 45A, 35B) and the ball discharge device (35, 45A, 35B) in the ball path (50e) of the payout device (35, A conductive member (55, 55A, 50A) is formed at a predetermined portion of a case (50, 50A, 50B) forming a spherical passage (50e) so as to block generated electromagnetic wave noise.
56) A ball and ball game machine characterized by the following. 2. The ball game machine according to claim 1, wherein the predetermined portion is at least one of an inner surface and an outer surface of the case (50, 50A, 50B). 3. The side wall portion (50h) facing the control board (39, 40, 42, 43, 46) of a case (50, 50A, 50B).
The ball game machine according to claim 2, wherein the ball game machine is at least one of an inner surface and an outer surface. 4. The conductive member (55, 55A, 56) is connected to a spherical passage.
The ball game machine according to any one of claims 1 to 3, characterized in that the ball game machine (50e) is provided along the inner surface of the case (50, 55A, 56). 5. The method according to claim 1, wherein the conductive member (55, 55A, 56) is provided along an inner surface of a side wall (50h) facing the control board (39, 40, 42, 43, 46). The ball game machine according to any one of claims 1 to 3, wherein: 6. The ball game machine according to claim 1, wherein said conductive member (55, 55A) is made of a conductive film. 7. The ball game machine according to claim 1, wherein said conductive member (56) is made of a thin metal plate and is provided detachably.