JP2002017976A - Pinball game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To intensify a countermeasure against noises of a pinball game machine by enhancing its absorbing effect by electrostrostatic noises, to enable to reuse the static electricity without noises in its power source circuit, and to prevent harmful effects by noises on various control circuits, or the like, which controls the game. SOLUTION: The power source circuit board 45 has a noise-absorbing circuit 87 which consists of a surge absorbing device 88, varistors 89 and 90, or the like, and absorbs noises. As a result, even if a game ball or the inside of a ball tank has an electro static charge (so-called contact charge) when a game ball is stored in the ball tank, the electro static charge in the ball or the inside of the ball tank is removed through a conductive member fixed in the ball tank and is supplied to the noise-absorbing circuit 87. The noise-absorbing circuit 87 then absorbs noises by the electro static charge securely and a countermeasure to noises can be intensified by enhancing a grounding effect. Therefore, harmful effects by noises on various control circuits, or the like, which controls the game can be securely prevented.

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 more particularly to a noise reduction circuit provided on a power supply board for guiding noise due to static electricity generated in the ball game machine to a power supply board. Regarding what was done.

[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 guiding passage connected to the payout device is provided below the back mechanism plate.
Therefore, when the game ball wins the winning means, the payout device is driven, a predetermined number of game balls are paid out as a prize ball,
These paid out game balls are paid out to the upper plate from the upper plate outlet through the payout ball guiding passage.

[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, since the transport path such as the game ball transport path, the ball tank, the tank rail, and the game ball payout path is an insulator made of synthetic resin, the static electricity generated when the game ball is polished by the polishing device is charged to the game ball. In the course of being transported along the game ball transport path on the hall side, static electricity is generated when the game ball frictionally contacts or collides with the transport path or the game ball, and the game ball is charged (so-called contact (Charge).

[0004] Furthermore, when the ball is supplied from the game ball conveyance path into the ball tank by dropping, static electricity is also generated when the ball collides with a plurality of game balls in the ball tank, and this static electricity can be charged to the game ball. High in nature. This means that some of the static electricity generated in the game ball is transferred to the insulator passage when the game ball is made of metal, but moves along the passage of the insulator made of synthetic resin while colliding with the passage or the game ball. Thus, although the static electricity is also charged in the path of the insulator, the game balls supplied to and stored in the ball tank tend to be charged with the static electricity.

When these electrostatically charged game balls move from a ball tank to a tank rail or a payout device, the game balls themselves act as antennas to discharge static electricity in the air or generate a magnetic field. In addition, noise due to the electrostatic discharge or electrostatic induction is generated, adversely affects 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 game ball dispensing passage in which a game ball such as a ball tank or a tank rail collides during movement and static electricity is easily generated, and the inner frame is rotatably mounted on the outer frame. The connected hinge metal and the metal plate are connected by a ground line so that static electricity charged on the game ball is grounded to the hinge metal.

[0006]

As described above, a metal plate is provided in a part of a game ball payout passage through which a game ball easily contacts during movement, and static electricity charged on the game ball is dissipated by the metal plate and the ground line. However, since the hinge fitting is small and not a full-scale grounding plate, a sufficient grounding effect is not obtained at present. Therefore, noise caused by electrostatic discharge or electrostatic induction from a moving game ball has a bad influence on various control boards or the like that control game control, which causes a problem of hindering game control. I have.

[0007] Further, noise due to static electricity charged in the path of the insulator also adversely affects game control. An object of the present invention is to effectively absorb noise due to static electricity so that noise countermeasures can be strengthened, to enable the static electricity that has absorbed the noise to be reused in a power supply circuit, and to control game control. To be able to prevent the adverse effects of noise on various control boards, etc.
And so on.

[0008]

According to the first aspect of the present invention, there is provided a ball game machine, wherein a plurality of control boards are provided on independent boards in accordance with the control contents of game control, and power is supplied to these control boards. In a ball and ball game machine provided with a power supply board for supplying, a noise absorption circuit for absorbing noise due to static electricity is provided on the power supply board.

The power supply board generates various powers required for control of DC 5 V and the like, and supplies these powers to a plurality of control boards formed on independent boards, so that game control is executed by these control boards. Is done. Since the power supply substrate is provided with a noise absorbing circuit, noise due to static electricity is reliably absorbed by the noise absorbing circuit. Therefore,
For example, during the movement of the game ball after being supplied into the ball tank from the game ball transport path on the hall side and passing through an insulating path such as a tank rail, a payout device, or a payout guide path, the game ball is electrostatically charged due to collision or friction. Even if a noise occurs, the noise due to the static electricity can be reliably absorbed by the noise absorbing circuit, and noise countermeasures can be strengthened.

Here, when the noise absorbing circuit has a surge absorbing element for absorbing a surge component up to a predetermined voltage and a varistor for absorbing noise that cannot be absorbed by the surge absorbing element (claim 2), Surge components of noise generated by static electricity up to a predetermined voltage are absorbed by the surge absorbing element, and thereafter, weak noise that cannot be absorbed by the surge absorbing element is absorbed by the varistor. For example, even for a large noise having a surge voltage of 200 V or more, the surge component up to about 200 V is absorbed by the surge absorbing element, and the remaining weak noise can be reliably absorbed by the varistor.

When the noise absorbing circuit is connected to an input line of a DC generating circuit on a power supply board (claim 3), the harmless noise is absorbed by the cooperation of the surge absorbing element and the varistor. The static electricity can be supplied to the DC generation circuit and reused.

[0012]

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. , 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 7 are pivotally connected to the front side of the game board 5 so as to be openable and closable, respectively. An upper plate cover 8 for storing game balls 76 for firing is attached to a front plate (not shown), and an upper plate cover 8 is provided below the front frame 4.
Plate 9 for storing game balls 76 overflowing or extracted from
And a firing handle 11 of the firing means 10.

The firing means 10 includes a firing handle 11 that can be rotated and a firing motor 13 (see FIG. 5) for firing a game ball 76 with a hitting hammer 12 with a hitting force corresponding to the turning angle of the firing handle 11. ) And so on. An operation panel 14 for ball lending operation for the card-type ball lending machine 1 is provided on the right portion of the upper plate cover 8.
4, a card balance display section 14a for displaying the card balance with a three-digit number, a ball lending switch 14b for instructing the ball lending of a predetermined amount of game balls 76, and a return command for returning the card at the end of the game. A switch 14c is provided.

As shown in FIG. 2, a guide rail 15 comprising a metal outer rail and an inner rail is provided on the game board 5 in a substantially annular shape, 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 moving 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,
Right), the display symbols of the symbol display portions 22a to 22c are fluctuated (scroll display) for a predetermined time on condition that the game ball 76 wins the symbol starting means 17. Then, the game ball 76 is stopped in the stop symbol pattern determined based on the lottery result according to the winning timing of the game ball 76 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 balls 7 passing through the gate 20 are displayed.
When 6 is detected, the display symbol of the normal symbol display section fluctuates for a predetermined time, and displays a stop symbol determined by the lottery value selected at the time when the game ball 76 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 open / close prize means 18 has an open / close 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 elapses or a predetermined number (for example, 1).
When no game ball 76 wins and the opening / closing plate 18a closes, the special game ends when the game ball 76 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. A payout ball guiding passage 36 connected to the payout device 35 is provided on the side. The game ball 76 paid out from the payout device 35 is the payout ball guiding path 3
6, the liquid is discharged from the upper plate discharge port 8a to the upper plate cover 8.

Here, each of the ball tank 33, the tank rail 34, the payout device 35, the payout ball guiding passage 36, and the upper plate cover 8, which constitute a payout path for paying out the game balls 76 stored in the ball tank 33, is provided. Is a synthetic resin (insulator). Therefore, during the movement of the game ball 76 from the ball tank 33 to the game ball payout passage,
In case of frictional contact or collision with 6, static electricity is generated,
In many cases, the generated static electricity is charged on the payout passage and the game ball 76.

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 prize means 17 to
A winning ball discharge gutter (not shown) for discharging the game ball 76 that has won the 19 is fitted with each other. 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, to significantly reduce the control load of the main control unit 50, and to simplify transmission control.

Next, various functions achieved through a plurality of control programs stored in advance in the control device of the pachinko machine 2 will be described with reference to a functional block diagram of FIG. However, these various functions are achieved by the aforementioned microcomputer or the like. The main control means 50 configured on the main control board 39 is mainly responsible for so-called game control of the game board 5 relating to input / output of signals to various game components, game ball detection switches and the like provided on the game board 5. At the same time, a control command is transmitted to a symbol control unit 60, a payout control unit 70, a lamp control unit 71, a sound control unit 72, and the like, which will be described later, as necessary.

The symbol control means 60 formed on the symbol control board 40 performs display control for displaying various moving images and background images on the liquid crystal display 16 based on the symbol control command transmitted from the main control means 50. Execution is performed, and the symbols on the symbol display sections 22a to 22c are subjected to variation control, and the variation is stopped and controlled with the instructed stop symbol. Dispensing control board 46
A payout control means 70 is provided above. The payout control means 70 receives a payout control command from the main control means 50 and controls the payout of the game balls 76 by the payout device 35.

The lamp control means 71 provided on the lamp control board 42 receives a lamp control command from the main control means 50 and controls the lighting of a lamp group 74 including a large number of display lamps provided on the game board 5 or the like. Govern The sound control means 72 provided on the sound control board 43 receives a sound control command from the main control means 50 and controls sound output for various sound effects to the speaker SP. The launch control means 73 configured on the launch control board 48 drives the launch motor 13 and controls the launch of the game ball 76.

The main control means 50 includes a lottery means 51, a judgment means 52, a special game generating means 53, and a probability varying means 5.
4 and a command transmission means 55 and the like. The lottery means 51 uses a lottery counter to set a numerical value in a small update cycle (for example, about 2 msec cycle) in a predetermined range (for example, 0 to 0 msec).
299), and by extracting the numerical value when the game ball 76 wins in the symbol starting means 17, the lottery regarding the hit in the state advantageous to the player and the detachment in the state unfavorable to the player can be performed. Do. The determination means 52 determines “big hit” based on the lottery value supplied from the lottery means 51 when the game ball 76 wins the symbol starting means 17,
It is determined which of “missing (including the reaching reach)”.

For example, when the lottery numerical value is a predetermined specific numerical value "71", it is determined as "big hit",
When there are many other numerical values, it is determined to be "out". The special game generating means 53 is included in the game control when the special determination result such as the big hit is received from the determining means 52, or when the stopped symbol after the change of the symbol display means 22 becomes the specific display such as the big hit symbol. The opening / closing plate 18a of the opening / closing type prize means 18 is operated as described above by a predetermined special game generating routine, and a special game for giving the player an advantageous profit state is executed.

The probability varying means 54, when receiving the special judgment result of "big hit" from the judging means 52, decides either "probability fluctuation" or "non-probability fluctuation" for the "big hit" by lottery, In the case of the probability fluctuation type big hit, set the probability fluctuation mode, until the next or next big hit, or until the symbol fluctuates a predetermined number of times, to increase the number of specific numerical values for lottery by the lottery means 51 than usual, Increase the jackpot probability.

The command transmitting means 55 receives the judgment result from the judging means 52, transmits a symbol control command (two-byte configuration including hit / miss data) to the symbol control means 60 when the symbol fluctuates, and pays out the game balls 76. Transmits a payout control command (2-byte configuration including payout number data) to the payout control means 70. Here, the hit / miss data is composed of any one of “probability variable jackpot”, “non-probability variable jackpot”, and “miss”, and the fluctuation time data is the time required for symbol fluctuation (for example, 40 seconds,
60 seconds). The payout number data is data for instructing the payout number of the game balls 76, such as five or ten.

Further, the command transmission means 55 transmits a lamp control command (two-byte configuration) to the lamp control means 71 when the lamp group 74 is turned on, and a sound control command (two-byte configuration) when the speaker SP outputs a sound effect. Is transmitted to the sound control means 72. The symbol control unit 60 has a stop symbol determination unit 61, receives the symbol control command transmitted from the command transmission unit 55, analyzes the received symbol control command, and based on the control command obtained by the analysis. The symbol variation in each of the symbol display sections 22a to 22c of the symbol display means 22 is controlled.

The stop symbol determining means 61 will be briefly described. In the fluctuation pattern table, a plurality of patterns are respectively provided for "probability variable jackpot", "non-probability variable jackpot", "missing reach", and "missing normal". The data is stored, and based on the "hit / miss data" included in the symbol control command, any one of the hit jackpot pattern or the hit pattern is determined by lottery.

Next, the ball tank 33 will be described. As shown in FIGS. 6 to 8, the ball tank 33 is a box made of synthetic resin with an open top, and the left end of the bottom wall 33 a is provided with a stored game ball 76 on the lower tank rail 34.
A discharge port 33b having a substantially rectangular shape in plan view and supplied by dropping is formed. On the left side wall 33c of the ball tank 33, a conductive member 78 made of a metal such as a copper plate for forcibly (positively) discharging and removing static electricity charged on the game balls 76 stored in the ball tank 33 is provided. Fixed.

The conductive member 78 is connected at the upper end thereof to an outer fixed plate 78a and an inner fixed plate 78b which are opposed to each other so as to be fitted and mounted from above so as to straddle the left side wall 33c. The fixing plate 78b includes a rectangular extending portion 78c extending in a vertical position to the right from the front end of the lower end of the fixing plate 78b and a fixing portion 78d integrally formed in a bent shape with the outer fixing plate 78a.

As shown in FIG. 6, the extension portion 78c is provided so as to face the discharge port 33b from the front side and extend below the discharge port 33b, and is supplied to the tank rail 34 via the discharge port 33b. A part of the game ball 76 is extended portion 78
c can be directly contacted. The conductive member 78 is fixed to the ball tank 33 by screwing the fixing portion 78d,
One end of a ground line 92 is connected to the lower end of the fixed portion 78d via a lug plate 79, and the other end of the ground line 92 is connected to a noise absorbing circuit 87 of the power supply board 45 described later.

Next, the power supply board 45 will be described with reference to FIG. A 24V generation circuit 82 for generating 24V DC and a 24V generation circuit 82 are connected to input lines 81a and 81b of 24V AC supplied from the outside via the connector 80.
A 5V generation circuit 83 for generating 5V and a 12V generation circuit 84 for generating 12V DC are connected to each other. The DC generated by these generating circuits 82 to 84 is supplied to the control board 3
9, 40, 42, 43, 46, etc. The input line 81a is provided with a fuse 85. A varistor 86 is provided between the input lines 81a and 81b to return a high-voltage alternating current of 47 V or more to an external 24 V AC power supply.

The power supply board 45 is provided with a noise absorbing circuit 87 close to the connector 91. The other end of the ground line 92 is connected to the input of the surge absorbing element 88 via a connector 91, and the output of the noise absorbing circuit 87 is connected to the input line 8 in the previous stage of the 24 V generating circuit 82.
1a and 81b. This noise absorbing circuit 8
7, the surge absorbing element 88 and the varistor 89 are connected in series and connected to the input line 81a, and the surge absorbing element 88 and the varistor 90 are connected in series and connected to the input line 81b. The other end of the ground line 92 is connected to the input of the surge absorbing element 88 via a connector 91.

The surge absorbing element 88 is provided with a pair of electrodes facing each other with a small gap therebetween, and is provided with a predetermined voltage (for example, 20
It is an element that immediately absorbs a surge component (voltage or current such as noise whose magnitude changes rapidly) up to 0 V).
Noise that cannot be absorbed by the surge absorbing element 88 is dulled by the varistors 89 and 90 so as to be surely absorbed. Next, the game balls 7 stored in the ball tank 33
The operation when the static electricity on the inner surface of the ball tank 6 and the spherical tank 33 is removed by the conductive member 78 and absorbed by the noise absorbing circuit 87 will be described.

The game balls 76 polished by the hole-side polishing device (not shown) are supplied to the ball tank 33 through a game ball transfer path (not shown) which is an insulator, and are stored in the ball tank 33. The plurality of game balls 76 include static electricity generated when being polished using a cloth or the like by a polishing device, static electricity generated due to collision or friction between the game balls 76 in the course of being conveyed on the game ball conveyance path, Further, when the ball is supplied from the game ball transport path into the ball tank 33 by dropping, the ball tank 33
There is a high possibility that the static electricity generated when colliding with a plurality of game balls 76 in the inside is charged (so-called contact charging), and the static electricity also charges the inner surface of the ball tank 33.

In this case, when the game ball 76 is made of metal, it moves along the game ball transfer path, which is an insulator made of synthetic resin, with the game ball transfer path and the game balls 76 while colliding or frictionally moving. Some of the static electricity charged on the game balls 76 is transferred to the game ball transport path, and although the static electricity is also charged on the game ball transport path, the game balls 7 supplied to the ball tank 33 and stored therein.
6 may be charged with static electricity. In addition, when the game ball 76 of the ball tank 33 is supplied to the tank rail 34 through the narrow discharge port 33b by dropping, the game ball 7
6 comrades rub and collide, this also causes
Static electricity is generated in the game ball 76.
It is often charged.

By the way, as described above, the static electricity is generated in the game ball 76.
Also, even when the inner surface of the ball tank 33 is charged, when the game ball 76 is supplied to the tank rail 34 through the discharge port 33b, it directly contacts the inner fixed plate 78b or the extended portion 78c, Alternatively, the contact is made indirectly via the game ball 76.
As a result, the static electricity charged to the game ball 76 or the ball tank 33
The static electricity charged on the inner surface of the noise absorbing circuit 8 is positively removed by the conductive member 78 and the noise absorbing circuit 8
7 is reliably supplied.

In the noise absorbing circuit 87, noise due to static electricity removed by the conductive member 78 is, for example, as shown in FIG.
As shown in (a), even when a high surge voltage is present (refer to the input-side noise waveform), as shown in the output-side noise waveform of FIG. 10B, for example, a surge component up to 200 V is immediately absorbed. ing. Thereafter, the weak noise that cannot be absorbed by the surge absorbing element 88 is removed by the varistors 89 and 9.
It is dulled by 0 and absorbed reliably. Finally, harmless static electricity in which noise has been absorbed by the cooperation of the surge absorbing element 88 and the varistors 89 and 90 can be supplied to the DC generation circuits 82 to 84 for reuse.

As described above, since the noise absorbing circuit 87 for absorbing the noise due to the static electricity generated in the pachinko machine 2 is provided on the power supply board 45, the game balls 76 are stored in the ball tank 33 when the game balls 76 are stored. Even when static electricity is charged, the noise is removed by the conductive member 78 provided in the ball tank 33 and supplied to the noise absorbing circuit 87, so that noise due to static electricity can be reliably absorbed by the noise absorbing circuit 87, and the grounding effect is enhanced. Noise measures can be strengthened. Therefore, various control boards 39, 40, 42, 43, 46 for controlling the game control.
And the like can be reliably prevented from being adversely affected by noise.

The noise absorbing circuit 87 is connected to the power supply board 4
Input lines 81a and 81 of the DC generation circuits 82 to 84 of FIG.
Since the surge absorbing element 88 and the varistors 89 and 90 cooperate, the harmless static electricity whose noise has been absorbed can be supplied to the DC generation circuits 82 to 84 for reuse. Here, the surge absorbing element 88 and the varistor 89,
A noise absorbing circuit 87 composed of 90 or the like may be provided.

A modification of the above embodiment will be described. 1) The noise absorbing circuit 87 may be configured to absorb noise by combining various elements other than the surge absorbing element 88 and the varistors 89 and 90. 2] A conductive member is provided at any place other than the ball tank 33, such as the tank rail 34, the payout device 35, the payout ball guiding passage 36, and the like, and the static electricity charged on the game ball 76 is removed by these conductive members. May be absorbed by the noise absorption circuit 87.

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 types of ball-and-ball game machines such as a game machine and a sparrow ball machine.

[0048]

According to the first aspect of the present invention, a plurality of control boards and a power supply board are provided, and the power supply board is provided with a noise absorbing circuit for absorbing noise due to static electricity. Absorption can be reliably absorbed by the absorption circuit,
The grounding effect can be enhanced and noise countermeasures can be strengthened.
Therefore, it is possible to reliably prevent adverse effects due to noise on various control units and the like that control game control.

According to the second aspect of the present invention, the noise absorbing circuit has a surge absorbing element for absorbing a surge component up to a predetermined voltage and a varistor for absorbing noise that cannot be absorbed by the surge absorbing element. The surge component of the noise generated up to the predetermined voltage can be absorbed by the surge absorbing element, and thereafter, the weak noise that cannot be absorbed by the surge absorbing element can be absorbed by the varistor.
The other effects are the same as those of the first aspect.

According to the third aspect of the present invention, since the noise absorbing circuit is connected to the input line of the DC generating circuit on the power supply board, the harmless noise is absorbed by the cooperation of the surge absorbing element and the varistor. The static electricity can be supplied to the DC generation circuit and reused. Other claim 1
Or, the same effect as that of 2 is achieved.

[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 functional block diagram of a control system of the pachinko machine.

FIG. 6 is a perspective view of a conductive member provided in the ball tank.

FIG. 7 is a plan view of a ball tank.

FIG. 8 is a front view of a ball tank.

FIG. 9 is a wiring diagram of internal wiring provided on a power supply substrate.

10A is a diagram illustrating a noise waveform on the input side of the surge absorbing element, and FIG. 10B is a diagram illustrating a noise waveform on the output side of the surge absorbing element.

[Explanation of symbols]

 2 Pachinko machine (ball game machine) 39 Main control board 40 Symbol control board 42 Lamp control board 43 Sound control board 45 Power supply board 46 Delivery control board 82 24V generation circuit 83 5V generation circuit 84 12V generation circuit 87 Noise absorption circuit 88 Surge Absorbing element 89 Varistor 90 Varistor 81a Input line 81b Input line

Claims (3)

[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 power supply board (45) for supplying power to these control boards (39, 40, 42, 43, 46), wherein the power supply board (45) generates noise due to static electricity. A ball game machine characterized by having a noise absorbing circuit (87) for absorbing noise. The noise absorbing circuit (87) includes a surge absorbing element (88) for absorbing a surge component up to a predetermined voltage, and a varistor (89, 90) for absorbing noise that cannot be absorbed by the surge absorbing element (88). 2. The ball game machine according to claim 1, further comprising: 3. A power supply board (4) comprising:
3. The ball game machine according to claim 1, wherein the ball game machine is connected to the input lines (81a, 81b) of the DC generation circuit (82-84).