JPH10179885A - Base board accommodating box of game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a board accommodation box for game machine having a high electromagnetic shielding effect of such a structure as capable of viewing the circuit board accommodated internally by equipping the box with electro- conductivity over the whole peripheral wall. SOLUTION: The upper wall surface of a lid is formed from a conductive plate 94 having transparency, and it is arranged so that conductive fibers 95 of the plate 94 are in electric continuity to a conductive body frame 104 in the condition that the components are installed to form a circuit board box. Thereby the accommodated circuit board 61 can be viewed externally to permit easy judgement of any undue deed committed to the circuit board 61, and also the electromagnetic shielding effect of the board box can be still more enhanced by structuring so that the whole peripheral wall of the box is put in the continuity condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a board storage box of a gaming machine for storing a circuit board in a covered state.

[0002]

2. Description of the Related Art Conventionally, pachinko game machines and slot machines are provided with many circuit boards. In particular, on a game control circuit board for controlling a game operation, a large number of electronic elements such as an MPU, a ROM, and a RAM constituting a microcomputer are mounted. In many cases, different game contents can be realized by exchanging a ROM in which a program for controlling a game operation is stored.
For this reason, the game control circuit board is usually housed and provided in a resin box in order to prevent fraud. Such a board storage box includes a box body (mounting board) on which a circuit board is mounted, and a lid (cover member) that covers an upper part of the box body, and the lid is transparent to the upper opening of the lid frame. The plate was attached and formed. As a result, the internal circuit board can be visually recognized from the see-through plate of the lid, and it is easy to determine whether the circuit board is illegal (illegal work such as connecting jumper wiring or mounting electronic components). However, on the other hand, since the see-through plate is made of a transparent synthetic resin, the box itself is vulnerable to static electricity and the circuit board tends to malfunction. Further, as disclosed in Japanese Utility Model Application Laid-Open No. 6-74182 (hereinafter referred to as "prior art"), a conductive mesh is provided on each of the box main body side and the lid body side, so that the box is provided with an electromagnetic wave. There has been proposed a device that provides a shielding effect and prevents a malfunction of a circuit due to a wireless device or the like. This also corresponds to prevention of malfunction of the circuit board due to static electricity.

[0003]

However, the above-mentioned prior art does not have a structure in which the box body and the lid are electrically connected. For this reason, since the electromagnetic shielding effect (electrostatic prevention effect) is not so high, it is necessary to individually ground the conductive mesh on the box body side and the conductive mesh on the lid body via a ground wire. The present invention has been made in view of the above-described circumstances, and the object thereof is to:
In a board storage box in which a circuit board to be housed therein can be viewed, the mounting board on which the circuit board is mounted has conductivity, and the conductive board on the cover member side is provided on the mounting board in a conductive manner, so that the electromagnetic wave is provided. It is an object of the present invention to provide a gaming machine board storage box having a high shielding effect (static electricity preventing effect).

[0004]

The means adopted by the present invention to attain the above object is a circuit board (game control circuit board 6) as shown in FIGS. 1, 4, 7 and 9.
In a board storage box (circuit board box 62) of a gaming machine (ball game machine 1) that stores 1) in a covered state,
The mounting board (box main body 100) on which the game control circuit board 61 is mounted, and a flat conductive plate 94 having conductivity and transparency are mounted on a cover base (lid frame 81). A cover member (lid body 80) that covers the upper part of the box body 100 so that the box body 100 can be visually recognized from the outside. The box body 100 is made conductive and the box body 100 and the lid body 80 are assembled. The conductive plate 94 is electrically connected to the box body 100. With such a configuration, the circuit board box 62 including the lid 80 and the box body 100 can be brought into a conductive state as in the case where the circuit board box 62 is entirely covered with one conductive member. For this reason, the electromagnetic shielding effect (static electricity prevention effect) of the box 62 can be further enhanced. Further, when grounding is performed using a ground wire to enhance the electromagnetic shielding effect (static electricity prevention effect), it is not necessary to provide a separate ground wire for the lid and the box body as in the related art.

As shown in FIGS. 7 and 8, a ground line 61a is provided on the game control circuit board 61, and when the box body 100 and the lid 80 are assembled, the box body 100 and the conductive When the plate 94 is electrically connected to the ground line 61a,
Since the ground effect can be obtained by assembling the circuit board box 62, it is not necessary to provide a ground wire, and the workability of assembling can be improved.

As shown in FIGS. 5 and 6, when the conductive plate 94 is attached to the lid frame 81, the direction of the conductive plate 94 is regulated so that the conductive plate 94 is assembled in a direction in which the conductive plate 94 is electrically connected to the box body 100. Is a conductive plate 94
Can be prevented from being mounted incorrectly, such as mounting the circuit board box 6 as an assembled body.
When completing 2, the conductive plate 94 can be reliably conducted to the box body 100.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, the overall configuration of the ball game machine 1 will be described with reference to FIGS. FIG.
2 is a front view of the ball game machine 1 according to the embodiment, and FIG.
Is a rear view of the ball and ball game machine 1. FIG.

The ball game machine 1 has an outer frame 2 formed in a vertically elongated rectangular shape, and is pivotally supported by one side of the outer frame 2 so as to be openable and closable, and has substantially the main components of the ball game machine 1. The frame base 3 includes a frame base 3, all of which are collectively provided, and a glass plate holding frame 4, which is provided on the upper front surface of the frame base 3 so as to be freely opened and closed. The main components provided on the frame base 3 include the glass plate holding frame 4, the game board 40, the upper plate 12, the lower plate 18 including the ashtray 21, the operation handle 22, the mechanism plate 50, and the hit ball firing device 71. In the illustrated embodiment, a card unit device 30 as a unit device for renting out game balls to a player is attached to the side of the ball game machine 1.

The glass plate holding frame 4 has a game board 4 to be described later.
A circular see-through window 5 capable of substantially seeing through the game area of No. 0 is opened, and a glass plate is mounted from the back of the circular see-through window 5. Further, the glass plate holding frame 4 is provided with a decorative LED 7 on the upper part thereof along the outer periphery of the circular see-through window 5 and decorative fluorescent lamps 6a and 6b on both left and right sides thereof. This decoration L
The ED 7 and the decorative fluorescent lamps 6a and 6b are turned on or blinked in accordance with the game state, and inform the player when a special game state has occurred or continue, and enhance the atmosphere of the game. In the upper part of the support side of the glass plate holding frame 4, a broken-out LED 8 that notifies that there is not enough prize balls to be paid out, or a predetermined number of prize balls are paid out based on the occurrence of winning balls. Are provided, and speakers 10a and 10b that generate sound effects according to the progress of the game are provided on the upper left and right sides of the glass plate holding frame 4. Note that, among the above-described configurations, the decoration LE
D7, the broken-out LED 8 and the payout LED 9 have a plurality of LEs.
D is configured to be mounted on a printed wiring board, but by configuring this printed wiring board with a metal-based printed wiring board, the heat radiation effect of the heat generated from the LED can be enhanced. .

Next, the structure of the upper plate 12 which is attached to the lower part of the glass plate holding frame 4 so as to be openable and closable will be described.
The upper plate 12 is configured by fixing a plate member obtained by combining a plurality of synthetic resin members to the surface of the synthetic resin upper plate opening / closing plate 11. The upper plate opening / closing plate 11 is provided with a ball removal operation lever 16 at the upper end on the open side. The ball removing operation lever 16 is provided so as to be movable in the left-right direction, and moves in one direction against the urging force of a spring (not shown) to move the balls stored in the upper plate 12 to the upper plate opening / closing plate 11. The ball-dropping path (not shown) formed on the back surface is caused to flow down to the lower plate 24. The upper plate 12 has a built-in piezoelectric buzzer 17 therein. The piezoelectric buzzer 17 is called a beep when a game ball lending abnormality occurs (for example, a continuous beep, a beep, a beep) or when a game ball is lent (for example, every time a game ball worth 100 yen is paid out). Sound), a notification sound notifying the effect is generated.

The above-mentioned upper plate 12 will be described in more detail. The upper plate 12 communicates a prize ball payout port 14 formed on the upstream side with a hit ball supply port 15 formed on the downstream side. The storage alignment path 13 is formed, and an upper bowl detector (not shown) is provided in the middle bottom surface of the storage alignment path 13 at the back surface. The upper counter ball detector detects a hit ball remaining in the upper counter 12. In addition, the upper plate 12 is provided with an operation unit which is operated when borrowing a game ball via a card unit device 30 provided adjacent to the ball game machine 1. The operation unit includes a ball lending switch, a return switch, an automatic ball lending switch, a frequency display LED, and an automatic ball lending display LED (both not shown). The ball lending switch is operated when borrowing a game ball by the card unit device 30. The return switch is for returning the card inserted into the card insertion slot 33 of the card unit device 30 at the end of the game. The frequency display LED displays the remaining amount of the card inserted into the card insertion slot 33 of the card unit device 30. In addition, the automatic ball lending switch is a manual mode in which a game ball to be borrowed is operated by operating the ball lending switch, and an automatic ball lending switch is provided when the remaining amount of hit balls of the upper plate 12 is no longer detected by the upper ball detector. The automatic ball payout display LED is lit when the automatic motor is selected and set.

When a big hit game state occurs in the game contents of the game board 40 described later, there is a chance to acquire a large number of winning balls in a short time. As described above, a huge chance for the player of the jackpot game state is,
In some cases, it may occur when the remaining balls on the upper plate 12 have almost disappeared. In such a case, it is necessary to successively fire a ball to make the ball hit a specific winning area of the variable winning ball device 42. Nevertheless, since the hit ball does not remain in the upper plate 12, the ball rental switch must be operated in a hurry to borrow a game ball. However, since a game ball is paid out after operating the ball lending switch, and it takes some time until the ball is fired and reaches the specific winning area of the variable winning ball apparatus 42, during that time, Although there is an inconvenience of missing an advantageous chance (establishment of continuation right), in the present embodiment, if the automatic ball lending switch is set to the automatic mode, the upper ball detector detects no hit ball. The game balls are automatically paid out to the upper plate 12 when is detected, so that the above-mentioned inconvenience does not occur. If the above control is not performed as the upper plate 12, the upper plate detector and the automatic ball lending switch may be omitted.

The lower plate 18 attached to the lower part of the frame base 3 is a prize ball overflowing from the upper plate 12, and is discharged from a surplus ball payout port 19 through a surplus ball passage (not shown). Of the prize balls, and the lower plate 18
A ball extraction operation lever 20 is slidably attached to the front wall of the camera. By operating the ball-pulling operation lever 20, the prize balls stored in the lower plate 18 can be balled down and transferred to a portable ball-box. An ashtray 21 is provided on the left side of the lower plate, and an operation handle 22 is provided on the right side. The operation handle 22 has a built-in main switch and a touch antenna (both not shown) for starting driving of a launching device motor 72 of a hitting ball launching device 71, which will be described later, and adjusts the resilience.

The front structure of the ball game machine 1 is substantially as described above, but in the illustrated embodiment, the card unit device 30 is adjacent to the ball game machine 1. The card unit device 30 is operated by operating the above-described operation unit provided on the upper surface of the upper plate 12. Thus, the card unit device 30 has a usable indicator 31 for displaying whether the card unit device 30 is in a usable state and a card game machine 1 on which side the card unit device 30 corresponds. Linkage stand direction indicator 32 to be displayed
And a card slot 33 for inserting a magnetic card as a recording medium. The card unit device 30 configured as described above is controlled by a unique control circuit, and includes a ball lending switch, a return switch, a frequency display LED, and a control board (described later) provided on the upper plate 12. It is connected to the winning ball payout control board 63 stored in the box 64. Note that the card unit device 30 may be incorporated in the ball game machine 1. In the present embodiment, the card unit device 30 is exemplified as a unit device for renting out game balls to a player, but may be a unit device into which a bill or the like can be inserted, for example.

Next, the front structure of the game board 40 will be described. The game board 40 is stored and fixed in a game board storage frame (not shown) integrally formed on the back side of the frame base 3. A guide rail (not shown) is attached to the surface of the plywood in a substantially spiral shape. The inside of the guide rail is set as a game area, and a shot ball fired falls. . In the gaming area,
In the case shown in the figure, a start winning prize hole 43 for allowing variable display of the drum-shaped variable display device 41, the variable prize ball device 42 and the drum-shaped variable display device 41 is provided, and prize holes 44 and 45 for simply winning balls. In addition, a windmill or a number of obstacle nails for changing the flowing direction and speed of the hit ball are provided, and at the bottom of the game area, an out port 46 for taking a hit ball which does not win any winning area is provided. ing.

On the other hand, on the back side of the ball game machine 1, a mechanism plate 50 is provided so as to be openable and closable, as shown in FIG.
A window opening 51 is opened in the center of the mechanism plate 50, and a winning ball collecting cover body 52 attached to the back surface of the game board 40 passes through the window opening 51. The winning ball set cover body 52 is provided with a relay board 53 and the drum-shaped variable display device 41 provided with a drum display control circuit board 54. The boards 53 and 54 are connected to each other. The game board 40 is provided on the relay board 53.
The above various electric components are connected, and a game control circuit board 61 described later is connected. On the other hand, to the drum display control circuit board 54, various electric components (drum motor, drum lamp, drum sensor, etc.) constituting the variable display device 41 are connected, and a game control circuit board 61 is connected.

The mechanism plate 50 has a ball tank 55 for paying out a predetermined number of prize balls based on the generated prize balls.
The prize ball payout device 56, the ball alignment rail 57, the curve gutter 58, and the passage body 59 for sending the balls in the ball tank 55 to the prize ball payout device 56, the prize ball detector 60a and the prize ball discharge solenoid 60b. Winning ball processing device 60 provided, a circuit board box 62 containing a game control circuit board 61, and a control board box 64 containing a prize ball payout control board 63.
And a relay board box 66 storing a unit relay board 65 and a terminal board box 68 storing a terminal board 67. The game control circuit board 61 includes a CPU, a RAM, and a ROM, and controls a game operation of a game device such as the variable drum display device 41 and the variable winning ball device 42. Award ball payout control board 63
Controls the operation of the prize ball payout device 56. The unit relay board 65 relays wiring between the ball game machine 1 and the card unit device 30. The terminal board 67 supplies power to the game control circuit board 61. On the back surface of the ball game machine 1, a control board box 70 accommodating a decoration control board 69 and a hit ball launching device 71 provided with a launching device motor 72 are provided in an area other than the mechanism plate 50 described above. ing. Decoration control board 69
Controls the operation of electric decorative components (such as lamps) provided on the front surface of the ball game machine 1 based on commands or data from the game control circuit board 61.

The above-mentioned various substrates and apparatuses are provided with connectors for connecting predetermined wirings.
In particular, the terminal board 67 housed in the terminal board box 68 not only supplies power to the game control circuit board 61, but also various electric devices provided in the ball game machine 1, for example, the above-described boards and hit balls. Power is also supplied to the firing device 71, and a terminal for relaying a signal line inside the ball game machine 1 or relaying a signal line between the ball game machine 1 and the outside is provided.

Next, the configuration of a board box containing circuit boards for various controls will be described by taking the circuit board box 62 as an example. As shown in FIG. 3, the circuit board box 62 includes an assembly of a lid body 80 and a box body 100 that house the game control circuit board 61 therein.
The assembly is attached to the mechanism plate 50 via an attachment base 120. First, the game control circuit board 61 housed in the box 62 will be described with reference to FIG. As shown in FIG. 7, the circuit board 61 is formed by a rectangular printed wiring board, and most of the upper surface is formed as an electronic component mounting area 74 for mounting an electronic component 73 such as a ROM. An area on one side in the width direction is formed as a connector mounting area 76 in which the connector 75 is mounted. In the circuit board 61, stop holes 77 are formed at both ends on one side in the width direction, and engagement holes 78 are formed at both ends on the other side in the width direction. The circuit board 6
A plating portion 79 is provided on the outer periphery of the stop hole 77 on the upper surface and the lower surface of 1. When the circuit board 61 is fixed to the body frame 104, which will be described later, with a screw 110, the plating portion 79 is used to connect the ground line 61a of the circuit board 61 to the body frame 10
4 to protect the circuit board 61 from static electricity.

As shown in FIG. 4, the lid body 80 is made of a synthetic resin (in this embodiment, polycarbonate) lid frame 81.
And a conductive plate 94 having transparency and conductivity. The lid frame 81 has an upper edge portion 82 having an opening 83.
And a side wall 90 erected over the entire periphery of the lower surface of the upper edge 82. A plurality of welding protrusions 84 are provided on the lower surface of the upper edge portion 82 at predetermined intervals on the inward side of the portion where the side wall portion 90 is erected, and are provided near two corners on one end (front end) side in the width direction. A positioning boss 85 having an engaging hole 85a is provided in a protruding manner. The plurality of welding projections 84
Among them, the one located at the right end part on the front end side is formed as a positioning welding projection 84a having a shorter length than the others. The outer peripheral end of the upper edge portion 82 is provided so as to protrude slightly outward from the standing portion of the side wall portion 90. Engagement claws 86 are formed on the outer peripheral end of the upper edge portion 82 at the long side portion on the front end side and the rear end portion on both side ends, and a mounting hole 87a is formed near the center of both side ends. A piece 87 extends. The mounting hole 87a is provided in the box body 1 described in detail later.
At the time of assembly with 00, the head 99a of the screw (counterhead screw) 99
Has a tapered shape so as to enter the upper wall surface of the lid frame 81 (see FIG. 9). A recess 88 for attaching a model name sticker 89 is provided on a portion of the upper edge 82 on the upper surface side.
Are formed. On the other hand, the side wall portion 90 has a radiating hole 9 for releasing heat generated from the housed circuit board 61 to the outside.
1 is drilled in the front end wall. In addition, a concave portion 92 is formed in a lower portion of the mounting piece 87 on both side walls of the side wall portion 90,
At the upper end of the concave portion 92, an insertion hole 93 having substantially the same length as the width dimension (dimension in the front-rear direction) of the mounting piece 87 is formed. The concave portion 92 is for releasing interference with a later-described mounting boss portion 114 in an assembled state with the box body 100, and the insertion hole 93 is for inserting a later-described mounting piece 98 when the conductive plate 94 is mounted. Things.

The conductive plate 94 is formed of a rectangular plate made of a transparent synthetic resin (in the present embodiment, made of vinyl chloride), and conductive fibers 95 having a black coating are provided on the lower surface thereof so as to be joined to the whole area. I have. The conductive plate 94 is provided with a plurality of insertion holes 96 through which the welding projections 84 on the lid frame 81 side are individually inserted. At two corners on one end (front end) side in the width direction, an assembled state with the lid frame 81 is provided. Thus, a notch 97 for releasing interference with the positioning boss 85 is formed. At the longitudinal ends of the conductive plate 94, mounting pieces 98 having mounting holes 98a are formed.
Are formed in the same dimensions as the mounting pieces 87 on the lid frame 81 side. The one located at the right end on the front end side of the plurality of insertion holes 96 is formed as a positioning insertion hole 96a corresponding to the positioning welding protrusion 84a on the lid frame 81 side.
Therefore, when the conductive plate 94 is attached to the lid frame 81 as will be described in detail later, the positioning welding projection 84a must be always aligned with the positioning insertion hole 96a. This makes it possible to uniquely determine the state of attachment of the conductive plate 94 to the lid frame 81, and to avoid mounting errors such as mounting the conductive plate 94 upside down.

Here, the above-mentioned conductive fiber will be briefly described. The conductive fiber is roughly divided into metal (copper, brass, nickel, aluminum, etc.) filaments woven into a mesh, and synthetic fibers. And conductive particles (copper, carbon, etc.) coated or impregnated. In any type of conductive fiber, from the viewpoint of electromagnetic shielding effect and light transmittance, 50 to 250 mesh (particularly, It is desirable that the opening ratio is 10 to 90% (especially 30 to 80% is good). And on the structure called mesh,
Although the transparency is inevitably deteriorated, in the present embodiment, in order to suppress this, the transparency is improved by making the conductive fiber 95 a dark color (black in the embodiment) avoiding the metal color. I have.

In this embodiment, the conductive plate 94 is formed by joining the conductive fiber 95 to the transparent synthetic resin plate. However, the structure of the conductive plate is not limited to this.
A conductive plate may be formed by burying conductive fibers in a transparent synthetic resin plate. In this case, the transparency can be improved by making the transparent synthetic resin plate dark. Further, a conductive plate (commonly referred to as a CRT filter or the like) may be formed by forming a transparent conductive layer. To briefly explain this transparent conductive layer, the transparent conductive layer is made of gold, platinum, silver,
Metals such as tin, aluminum, nickel, palladium, or antimony, metal oxides such as indium oxide or tin oxide, or mixtures thereof are subjected to conductivity and transparency by a method such as vacuum deposition, sputtering, ion plating, or CVD. It is formed on a surface of a resin material or the like as a layer having a thickness. The thickness of the transparent conductive layer is usually 5
１０００1000 nm, and its electrical conductivity is 100
An electric resistivity of 00Ω / □ or less, preferably 1000Ω / □ or less is suitable.

Thus, the cover 80 inserts the mounting piece 98 into the insertion hole 93 of the lid frame 81 in a state where the conductive plate 94 is bent, and inserts the welding projection 84 of the lid frame 81 through the conductive plate 94. The cover frame 81 and the conductive plate 94 are inserted into the holes 96 and the welding projections 84 protruding from the insertion holes 96 are ultrasonically welded.
Are assembled. At this time, the conductive plate 94
As shown in FIG. 6A, the conductive fiber 95 is
It is assembled in a state where it is arranged inside 0. The mounting holes 98a of the conductive plate 94 are arranged on the same axis as the mounting holes 87a of the lid frame 81, and the positioning welding projections 84a of the lid frame 81 are aligned with the positioning insertion holes 96a of the conductive plate 94.
Is welded in a state where it is inserted through. In addition, the welding projection 8
In the welding of No. 4, when the lid frame 81 (welding projection 84) and the conductive plate 94 are formed of the same material, the welded portion of the welding projection 84 is mixed with the conductive plate 94, and more firm welding can be performed. Become. The lid 80 may be assembled by heat welding other than ultrasonic welding, by using a solvent or an adhesive, or by using screws or locking claws.

Next, the set dimensions of the lid frame 81 and the conductive plate 94 will be described. The mounting piece 87 of the lid frame 81 and the mounting piece 98 of the conductive plate 94 are shown in FIGS.
As shown in the figure, it is provided at different positions on the left and right,
Each dimension L ′ · L1 ′ · L of the lid frame 81 shown in FIG.
The following (1) to (2) are shown between 2'.R'.R1'.R2 'and each dimension L.L1.L2.R.R1.R2 of the conductive plate 94 shown in FIG. Equation (7) holds.

L = L ′ = R = R ′ (1) L + L1 + L2 = R + R1 + R2 (2) L ′ + L1 ′ + L2 ′ = R ′ + R1 ′ + R2 ′ (3) L1 ≠ R1 (4) L2 ≠ R2 .. (5) L1 ′ ≠ R1 ′ (6) L2 ′ ≠ R2 ′ (7) For this reason, even if the conductive fibers 95 of the conductive plate 94 are arranged above the lid 80, the assembly may be performed in a manner as shown in FIG. As shown in FIG. 6B, one mounting piece 98 of the conductive plate 94 is
Does not enter the insertion hole 93, and as a result, one of the mounting holes 98a
Cannot be arranged on the same axis as the mounting hole 87a. That is, in the present embodiment, as described above, the positioning welding protrusion 84a on the lid frame 81 side and the positioning insertion hole 9 on the conductive plate 94 side.
6a, the lid frame 81 and the conductive plate 94
According to each of the set dimensions, the mounting error of the conductive plate 94 can be avoided. In other words, the conductive plate 94
The assembly as the lid 80 is completed only when the conductive fibers 95 are arranged inside the lid 80.

On the other hand, as shown in FIG. 7, the box body 100 has a bottom plate 101 having transparency and a body frame 104.
And The bottom plate 101 is made of a transparent synthetic resin rectangular plate, and insertion holes 102 are formed near four corners thereof. A cylindrical wall 103 protruding upward is provided on the periphery of the insertion hole 102. This cylindrical wall 10
Reference numeral 3 denotes a mounting boss 109 and a positioning boss 111, which will be described later, inserted through the insertion holes 102 when the main body frame 104 is assembled.
And the circuit board 61 is supported at a predetermined distance from the bottom plate 101 together with the mounting boss 109 (see FIG. 8B).

The main body frame 104 is made of synthetic resin having conductivity (in this embodiment, made of carbon-containing polystyrene).
And an opening 105 is formed on the lower surface. An engaging piece 106 having an L-shaped cross section is formed on the inner peripheral edge of the opening 105 on both sides in the width direction with a predetermined length. In the remaining lower surface area other than the opening 105, a locking hole 107 for locking an engagement protrusion 124 of a mounting table 120, which will be described later, and a plurality of elliptical transparent holes 108.
And are drilled. At two corners on the rear end side of the lower surface area, mounting bosses 109 for fixing the circuit board 61 with screws 110 are erected, and the two corners on the front end side have an engagement projection 111a at the upper end. A boss 111 is provided upright. The positioning boss 111 is mounted on the circuit board box 6.
When the engagement protrusion 111a engages with the engagement hole 78 on the circuit board 61 side and the engagement hole 85a on the lid frame 81 side in the assembled state as 2, the lid 8 with respect to the box body 100 is
0 and the circuit board 61 are positioned. On the other hand, on the side wall of the main body frame 104, mounting pieces 112 are formed at upper ends on both sides in the longitudinal direction so as to protrude outward. A recess 113 is formed in the mounting piece 112 so that the mounting pieces 87 and 98 on the lid 80 side are fitted therein.
The lid 80 is inserted through the mounting holes 87a and 98a on the lid 80 side.
A mounting boss portion 114 for fixing the screw 99 is formed. Further, a heat radiation hole 1 is provided on a side wall at one end (front end) in the width direction.
A notch 116 is formed on the side wall on the other end (rear end) side in the width direction so that the connector wiring of the circuit board 61 can be easily attached and detached.

The lid 80 and the box main body 100 are attached to the circuit board 6 by the following assembly.
1 (circuit board box 62). First, each boss 109/111 is inserted into the insertion hole 102.
The bottom plate 101 is loaded into the main body frame 104 in a state in which is inserted, and as shown in FIGS. 8A and 8B, the fixing holes 77 of the circuit board 61 are fixed to the mounting bosses 109 with screws 110 from above. At this time, the positioning of the circuit board 61 with respect to the main body frame 104 is performed by inserting the engaging protrusions 111a of the positioning bosses 111 into the engaging holes 78 (see B in FIG. 7). Next, the lid 80 is put on the box body 100 in a state where the mounting pieces 87 and 98 are fitted in the recesses 113 of the mounting piece 112. At this time, the side wall (partition wall 81a) on the rear end side of the lid frame 81 has the electronic component mounting area 74 and the connector mounting area 7 of the circuit board 61 as shown in FIG.
6 is partitioned inside and outside the lid frame 81. Thus, the wiring can be attached to and removed from the connector 75 without removing the lid 80. On the other hand, the outer surfaces of the side walls other than the partition wall 81a are
It is in contact with the inner surface of the side wall on the 0 side, and in this state, the engaging claw 86 on the side of the lid 80 is engaged with the outer surface of the side wall of the box body 100. The lid 80 is formed by engaging the engaging hole 85a of the positioning boss 85 with the engaging protrusion 111a inserted through the engaging hole 78 of the circuit board 61 (B in FIG. 4 and FIG. 7).
), And positioning with the box body 100 is performed.

Next, in the direction A shown in FIGS. 4 and 7, the mounting piece 87 (mounting hole 87a) of the lid frame 81 and the conductive plate 9
The four mounting pieces 98 (mounting holes 98a) are screwed to the mounting bosses 114 of the main body frame 104 with screws 99. Then, the screw 99 stop portion and the contact outer wall of the lid 80 and the box body 100 (in the present embodiment, the outer wall near the mounting piece 112).
And the rectangular hologram seal 117.1 respectively
18 is attached. As a result, an assembly (circuit board box 62) in which the circuit board 61 is accommodated in a fixed state in the internal space between the lid 80 and the box body 100 is configured. The conductive fibers 95 of the conductive plate 94 disposed inside the lid 80 are in a state of being electrically connected to the conductive main body frame 104 by fastening the screws 99 between the lid 80 and the box main body 100. Thus, the conductive plate 94 on the lid 80 side is connected to the ground line 61 of the circuit board 61 via the main body frame 104.
a.

By the way, the above-mentioned screw (counterhead screw) 99
As described above, the head 99a enters the upper wall surface of the lid frame 81, and the terminal plane of the head 99a is located on the same plane as the upper wall surface of the lid frame 81 in the tightened state. Also,
The outer peripheral end of the lid 80 (upper edge 82) is
0 and the box body 100 (body frame 10
4) It is arranged at the same position as the outer surface of the side wall. For this reason,
A hologram seal 117 for sealing the screw 99 stop portion,
Also, the hologram seal 118 for sealing the contact outer wall between the lid 80 and the box body 100 is securely stuck on a flat surface (the seal 118 is bent in the middle). Peeling and damage can be prevented, and fraudulent acts on the seals 117 and 118 can be easily determined.

Here, the hologram seal will be briefly described. The hologram seal includes a hologram layer, a light reflection layer, and an adhesive layer, and a hologram pattern formed on the hologram layer is formed into a pattern that is difficult to forge. so,
It prevents stickers from being replaced due to fraud. In this hologram pattern, coherent light (laser light) incident on the surface of the hologram seal enters the light reflection layer through the embossed surface of the hologram layer, and is reflected from the light reflection layer to the outside of the hologram seal as hologram interference light. It is formed by doing. By the way, the hologram seal 118 of the present embodiment can determine whether or not a regular circuit board is housed by setting the board number of the housed circuit board 61 to a hologram design.
It is desirable that the hologram symbols of the hologram seals 117 and 118 be configured from information on the circuit board 61 or the ball-and-ball game machine 1.

As described above, in the circuit board box 62 according to the present embodiment, the hologram seal 117 is used for the screw 99 fixing portion of the lid 80 and the box body 100 and the contact outer wall.
The sealing state of 118 secures the covering state of the circuit board 61. The circuit board box 62 includes a conductive plate 94 forming the upper surface thereof and a bottom plate 1 forming the lower surface thereof.
The mounting surfaces (upper surface) and the solder surface (lower surface) of the circuit board 61 can be seen from the outside by forming each of the materials 01 from a material having transparency. For this reason,
When an illegal operation (for example, an illegal operation of connecting a jumper wiring or mounting an electronic component) is performed on the circuit board 61, the illegal operation can be immediately recognized. Further, the conductive plate 94 provided in the box 62 can provide an electromagnetic shielding effect. By the way, in the present embodiment, the electromagnetic shield effect of the box 62 is made by making the outer peripheral wall of the circuit board box 62 composed of the lid 80 and the box body 100 conductive as a whole. The effect is further enhanced.

The circuit board box 62 according to the present embodiment
Can have the following effects. That is,
Unauthorized acts on the box 62 can be easily determined. In general, when an illegal act is performed by separating the welded portion, if the separated portion is welded or adhered again, it is very difficult to determine whether the illegality is detected. In the case of the present embodiment, the welding protrusion of the lid frame 81 is used. When 84 is separated, the conductive plate 94 falls on the circuit board 61. Therefore, the conductive plate 94 prevents the circuit board 61 from being modified. Also, the hologram seals 117 and 118 are peeled off and the box body 1 is removed.
When the hologram seal 117 is opened,
・ Even if the 118 is re-applied, the trace remains firmly, so that it is immediately known that the improper operation has been performed.

Next, a mounting table 120 for mounting the circuit board box 62 to the mechanism plate 50 will be described with reference to FIG.
This will be described with reference to FIG. As shown in FIG. 3, the mounting base 120 is formed of a rectangular plate made of a synthetic resin (in the present embodiment, made of carbon-containing polypropylene, but may be made of metal). Are provided at predetermined intervals. The direction in which the engagement rails 121 are provided is the left-right direction along the long side of the mounting base 120. On each long side (front and rear edges) of the mounting base 120, a guide piece 122 orthogonal to the substrate surface is provided to protrude. A release lever 123 that elastically deforms is formed at the right end of the mounting base 120, and the base of the release lever 123 is
An engagement projection 124 that engages with the locking hole 107 on the 0 side is protrudingly provided. Also, the mechanism plate 5 is provided on the substrate surface of the mounting table 120.
A fixing hole 125 for screwing the mounting base 120 is formed in a mounting boss (not shown) on the 0 side.

The mounting table 120 is fixed to a predetermined portion on the mechanism plate 50 by being screwed to the mechanism plate 50 through the retaining hole 125. When mounting the circuit board box 62 on the mounting base 120,
The box 62 is slidably mounted on the mounting table 120 from the left side. At this time, the engagement rail 121 on the mounting base 120 side is engaged with the engagement piece 106 on the box 62 side, and the guide piece 122 guides the sliding movement of the box 62. Then, the release lever 123 on the mounting base 120 side is caused by such a sliding movement of the box 62.
Is elastically deformed downward, and finally, the locking hole 107 on the box 62 side engages with the engagement protrusion 124 on the mounting base 120 side, and the mounting of the box 62 is completed. On the other hand, when removing the circuit board box 62 from the mounting base 120, the release lever 123 is pushed downward to release the engagement between the locking hole 107 and the engagement projection 124, and the box 62 is slid to the left from this state. Can be easily removed. That is, the circuit board box 62 is configured to be detachable from the mounting table 120 fixed to the mechanism plate 50 with screws.

As described above, the circuit board box 62 according to the present embodiment is configured such that the upper wall surface of the lid 80 is formed by the conductive plate 94 having transparency, so that the circuit board
1 is visually recognizable from the outside, and illegal acts on the circuit board 61 can be easily determined. In the assembled state of the circuit board box 62, the conductive plate 94 is electrically connected to the box body 100 having conductivity. For this reason, the outer peripheral wall of the box 62 including the lid 80 and the box body 100 can be entirely brought into a conductive state, and the electromagnetic shielding effect of the box 62 can be further improved.

In this embodiment, the ground line 61a is provided on the circuit board 61 to be housed, and the box body 100 and the conductive plate 94 are electrically connected to the ground line 61a when the box body 100 and the lid 80 are assembled. It has become. For this reason, the circuit board box 6
Since the grounding effect is obtained by assembling 2, it is not necessary to provide a ground wire, and the workability of assembling can be improved. In addition, the ground line 6 is
1a, without using a ground wire,
May be grounded. Also in this case, the workability is improved because it is not necessary to separately provide ground wires for the lid and the box main body as in the prior art. In attaching the conductive plate 94 to the lid frame 81, the direction is regulated so that the conductive plate 94 is assembled in a direction in which the conductive plate 94 is electrically connected to the box body 100. For this reason, it is possible to avoid a mounting error such as mounting the conductive plate 94 upside down. In particular, in the case of the conductive plate 94 in which the conductive fibers are bonded only to one surface of the transparent synthetic resin plate for cost reduction, even if it is difficult to know which surface the conductive fibers are bonded to, the conductive plate 94 may be used as an assembly. When the circuit board box 62 is completed, the conductive plate 94 can be reliably conducted to the box body 100.

The configuration of the circuit board box is not limited to the above-described embodiment (first embodiment).
Hereinafter, other configurations will be described as second to fifth embodiments. Further, in the following description, for the sake of convenience, the same components and components having the same functions as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and detailed description thereof is omitted. I do. First, in the first embodiment, the dimensions L, R, L ', and R' of the mounting piece 87 of the lid frame 81 and the mounting piece 98 of the conductive plate 94 are set to the same size, but the invention is not limited to this. Not something. FIG. 10 (A)
As in the second embodiment shown in (B), the dimensions of the attachment piece 87 of the lid frame 81 and the attachment piece 98 of the conductive plate 94 may be different between left and right (L ≠ R, L ′ ≠ R ′). As described above, in the second embodiment, the dimensions of the mounting pieces 87 and 98 are made different on the left and right, so that the lid frame 81 and the conductive plate 94 are made bilaterally asymmetric. A positioning boss 85 is provided on the lid frame 81,
Since the notch portions 97 are provided in the conductive plate 94, respectively, the lid frame 81 and the conductive plate 94 are also asymmetrical in the vertical direction. That is, the conductive plate 94 with respect to the lid frame 81
In order to uniquely determine the mounting state of the
If the conductive plate 94 has an asymmetric shape in the left-right direction and the up-down direction, any shape may be used. By adopting this shape, it is possible to avoid erroneous mounting of the conductive plate 94.

Next, in the first embodiment, the lid frame and the conductive plate are attached by welding the welding projections, and the transparent conductive plate is provided directly to the opening of the lid frame.
It is not limited to this. For example, as in the third embodiment shown in FIG. 11, the lid 130 may be configured by the lid frame 131 and the conductive plate 134. On the upper surface of the lid frame 131, there are no openings and welding projections, and instead, a plurality of heat radiation holes 132 are formed. Engaging claws 133 are formed at both ends in the width direction of the lid frame 131. On the other hand, since there is no need to insert the welding protrusion into the conductive plate 134, no insertion hole is formed. Then, the mounting piece 98 is inserted into the insertion hole 93 of the lid frame 131 in a state where the conductive plate 134 is bent, and both ends in the width direction of the conductive plate 134 are
By engaging (fitting) with the first engaging claw 133, the lid 131 is configured as an assembly of the lid frame 131 and the conductive plate 134. As described above, in the third embodiment, the work of welding the lid frame and the conductive plate is reduced by mounting the lid frame and the conductive plate with the engagement claws. Note that the conductive plate 134 has a heat radiation hole 132
May be provided with a heat radiating hole communicating with the radiator. In addition, since the conductive plate is formed by bonding conductive fibers to a transparent synthetic resin plate, it is suitable for mass production and is inexpensive. For example, make a conductive plate in a sheet shape,
Then, the conductive plate 94 (134) can be cut off. Furthermore, since only one side is joined, the cost can be reduced.
Further, when the outer shape is substantially rectangular as in the case of the conductive plates 141 and 176 to be described later, there is less residue when cut off, so that waste is reduced.

Next, the circuit board box 6 of the fourth embodiment will be described.
2 'will be described with reference to FIGS. 12 to 17A. As shown in FIG. 12, the circuit board box 62 'includes an assembly of a lid 140 and a box body 100 for accommodating the game control circuit board 61 therein.
It is configured to be attached to the mechanism plate 50 through the intermediary 20.
As shown in FIG. 13, the lid 140 includes a conductive plate 141 having transparency and conductivity and a lid frame 144. The conductive plate 141 is formed of a rectangular flat plate made of a transparent synthetic resin, and conductive fibers 142 are provided on the lower surface thereof so as to be joined to the whole area. In addition, two notches 143 are formed at one end (front end) in the width direction of the conductive plate 141.

The lid frame 144 is made of a transparent synthetic resin, and has a positioning boss 85 having an engaging hole 85a, a mounting piece 87 having a mounting hole 87a, and a heat radiation hole 91, similarly to the lid frame 81. Have been. At one end (front end) side in the width direction of the lid frame 144, two locking portions 145 for locking (inserting) the cutout portion 143 on the conductive plate 141 side are formed.
On the other end (rear end) in the width direction, locking claws 146 for locking the other end in the width direction of the conductive plate 141 are formed at two places. On the lower surface side of the locking portion 145, a concave surface 145a is formed (see FIG. 16A). The concave surface 145a matches the rounded tip shape of the locking portion 145, and
The notch 143 is easy to insert. On the other hand, the locking claw 146 is provided with a projection 146a for bending the locking claw 146 to lock the conductive plate 141 (see FIG. 16B). Further, there is no opening on the upper surface of the lid frame 144, and a concave portion 147 for attaching the model name seal 89 is provided.
And a concave portion 148 for guiding the attachment of the hologram seal 118 are formed.

Next, the lid frame 144 and the conductive plate 14
1 will be described. The pair of left and right locking portions 145 and locking claws 146 formed on the lid frame 144 are shown in FIG.
As shown in FIG. 4, the conductive plate 14 is provided at a position corresponding to each of the pair of left and right locking portions 145.
A cutout 143 on one side is formed. Also, the conductive plate 1
The notch 143 of the cover 41, in other words, the locking portion 145 and the locking claw 146 of the lid frame 144 are provided at left-right asymmetric positions (L ≠ R). For this reason, the lid frame 14 described later in detail.
4 and the conductive plate 141 are attached.
14A, as shown in FIG. 14A, has a configuration in which the conductive fibers 142 can be attached to the lid frame 144 only in a state where the conductive fibers 142 face the upper surface of the lid frame 144. That is, the conductive fibers 14
When the conductive plate 141 is attached to the lid frame 144 in a state where the surface on which the second plate 2 is not joined faces the upper surface of the lid frame 144, as shown in FIG.
Protrudes from the lid frame 144, and the mounting holes 87a of the lid frame 144
Can be closed by the conductive plate 141, so that the operator can notice the mounting error only at a glance. As described above, in the fourth embodiment, similarly to the lid body 80, the conductive fibers 142 of the conductive plate 141 are formed asymmetrically in the vertical and horizontal directions so that the conductive fibers 142 of the conductive plate 141 The assembled body as the lid 140 is completed only when facing the upper surface.

The lid 140 and the box body 100 described above are configured as an assembly (circuit board box 62 ') in which the circuit board 61 is housed by the following assembly. First, the circuit board 61 is screwed into the box body 100 in the same manner as when the circuit board box 62 is assembled.
Stop 10 (see FIG. 15). Next, the lid frame 144 is put on the box body 100 whose upper surface is open. At this time, the partition wall 144a of the lid frame 144 is in a state where the electronic component mounting area 74 and the connector mounting area 76 of the circuit board 61 are partitioned inside and outside the lid frame 144, as shown in FIG. On the other hand, side walls other than the partition wall 144a are shown in FIG.
As shown in FIG. 5 (B), the outer surface thereof is
In contact with the inner surface of the side wall. Next, the lid frame 14
4 is fixed to the mounting piece 112 of the box body 100 with the screw 99, and the screw 99 fixing portion and the lid frame 144 are fixed.
The rectangular hologram seals 117 and 118 are attached to the contact outer wall (portion where the concave portion 148 is formed) of the box body 100, respectively. Then, FIG.
As shown in (B), the conductive plate 141 is attached to the lid frame 144 by locking the conductive plate 141 with the locking claws 146 with the notch 143 inserted into the locking portion 145, and the lid 140 and the box The circuit board box 62 'including the main body 100 is completed.

As described above, in the circuit board box 62 'according to the fourth embodiment, similarly to the circuit board box 62, in the assembled state, the conductive plate 141 is electrically connected to the box body 100 having conductivity. It has become. For this reason, the outer peripheral wall of the box 62 'composed of the lid 140 and the box body 100 can be made conductive as a whole, and the electromagnetic shielding effect of the box 62' can be further improved. Further, the circuit board box 62 ′ is formed by connecting the conductive plate 141 to the locking portion 14 of the lid frame 144.
5 and the locking claw 146, the conductive plate 141 can be easily attached to and detached from the lid frame 144.
Further, the lid frame 144 is made transparent. Thus, the circuit board 61 can be easily and reliably checked by easily removing the conductive plate 141 having a feeling of being smoked by the bonding of the conductive fibers 142 from the lid frame 144. The method of attaching the detachable conductive plate 141 and the lid frame 144 is not limited to the locking portion 145 and the locking claw 146, and may be screwed. Also, the conductive plate 1
41 is not necessarily required to have transparency,
In 4, only the upper surface portion may be made transparent.

In the circuit board box 62 'of the fourth embodiment, as shown in FIG. 17A, the outer peripheral end of the conductive plate 141 is arranged at the same position as the outer peripheral surface of the side wall on the main body frame 104 side. It has a configuration, but is not limited to this. For example, as in the fifth embodiment shown in FIG. 17B, a guide portion 1 having an L-shaped cross section is provided at the upper end of the side wall of the main body frame 104.
50 may be formed over the entire periphery, and the outer peripheral edge of the conductive plate 141 may be closed by the guide portion 150. FIG.
As in the sixth embodiment shown in FIG. 7 (C), the guide piece 151 having an L-shaped cross section is screwed over the entire periphery of the main body frame 104.
By stopping, the outer peripheral edge of the conductive plate 141 may be closed by the guide piece 151. In addition, the guide piece 151
It is made of synthetic resin having conductivity,
A pressing projection 151a for pressing the conductive plate 141 is formed. As described above, in the fifth and sixth embodiments, the guide portion 150 (the guide piece 15
According to 1), the outer peripheral end of the conductive plate 141 is closed. For this reason, the contact area between the conductive fibers 142 of the conductive plate 141 and the main body frame 104 can be further expanded, and the electromagnetic shielding effect of the conductive plate 141 can be further improved. Further, the guide portion 150 (the guide piece 151) for closing the outer peripheral end of the conductive plate 141 is
The mounting mistake such as mounting the 41 upside down is avoided.

Next, the circuit board box 6 of the seventh embodiment will be described.
2 "will be described with reference to Fig. 18 to Fig. 20. As shown in Fig. 18, the circuit board box 62" is an assembly of a lid 160 and a box body 180 that house the game control circuit board 61 therein. This assembly is attached to the mechanism plate 50 via the attachment base 120.

As shown in FIG. 19, the lid 160 includes a transparent upper plate 161, a metal lid frame 168, and a transparent and conductive conductive plate 176.
The upper plate 161 is made of a rectangular plate made of a transparent synthetic resin, and a plurality of welding projections 162 protrude from the outer peripheral end on the lower surface thereof at predetermined intervals. A fitting surface 163 for fitting the conductive plate 176 is formed in a concave shape on the inner periphery of the projecting portion of the welding projection 162. One corner of the fitting surface 163 is
It has an R shape different from the other three corners, and is formed as a positioning portion 164 for positioning the conductive plate 176. At both ends in the longitudinal direction on the lower surface side, mounting holes 16 are provided.
A mounting projection 165 formed by drilling 5a protrudes. On the other hand, a model name label 16
6 is formed.

The lid frame 168 is formed by bending a stamped and formed metal plate.
69, and the outer peripheral edge portion has a side wall all around. Note that a circular cutout 169a is provided at one corner of the opening 169 so as to cope with a case where a changeover switch for setting a probability is provided on the circuit board 61 (to avoid interference between the changeover switch and the lid frame 168). Are drilled. Further, one side wall in the width direction is provided so as to protrude downward as compared with the other side walls, and partitions the electronic component mounting area 74 and the connector mounting area 76 into and out of the lid frame 168 when the circuit board 61 is housed. 168a. In the remaining upper surface area other than the opening 169, a plurality of insertion holes 170 for individually inserting the plurality of welding projections 162 on the upper plate 161 side are formed. An insertion hole 171 through which the mounting projection 165 is inserted is formed. On the other hand, three side walls except for the partition wall 168a are provided on the side walls of the lid frame 168.
2 is provided, and a heat dissipation hole 173 for releasing heat generated from the housed circuit board 61 to the outside is formed in the partition wall 168a.
Are drilled. Further, a positioning protrusion 174 is provided on each side wall in the longitudinal direction of the lid frame 168 so as to project inward. The above-mentioned mounting hole 172 is provided with a screw (counterhead screw) 175 at the time of assembling with the box main body 180 described later in detail.
Has a tapered shape such that the head of the cover frame 168 enters the side wall surface of the lid frame 168.

The conductive plate 176 is formed of a rectangular plate made of a transparent synthetic resin, and conductive fibers 177 coated with black are provided on the lower surface side of the rectangular plate. Conductive plate 176
Are formed in shapes corresponding to the four corners of the fitting surface 163 on the upper plate 161 side, respectively. That is, the conductive plate 1
One corner of 76 is formed as a positioning R portion 178 having an R shape different from the other three corners. Therefore, when attaching the conductive plate 176 to the upper plate 161, the positioning R portion 178 must always be aligned with the positioning portion 164 on the upper plate 161 side. Thus, the mounting state of the conductive plate 176 with respect to the upper plate 161 can be uniquely determined, and mounting errors such as mounting the conductive plate 176 upside down can be avoided.

Thus, the lid 160 is mounted on the upper plate 1 with the conductive plate 176 attached to the fitting surface 163 of the upper plate 161.
The welding projections 162 of the 61 are inserted into the insertion holes 172 of the lid frame 168, and the welding projections 162 are ultrasonically welded to form an assembly of the upper plate 161, the lid frame 168, and the conductive plate 176. .

On the other hand, as shown in FIG. 20, the box main body 180 includes a transparent bottom plate 181 and a metal main body frame 187. The bottom plate 181 is made of a transparent synthetic resin rectangular plate, and has a circuit board 61 on its upper surface.
Flanges 182 for supporting the lower surface of the upper surface are erected in the vicinity of the four corners and in the center of both ends in the width direction. Note that a slit 183 for releasing interference with an engagement piece 193 described later is formed in the flange piece 182 erected near two corners on one side in the width direction. On the other hand, on the lower surface side of the bottom plate 181, a flange piece 184 for maintaining a predetermined interval with the main body frame 187 is provided upright. In addition, bottom plate 1
81 have cutouts 185a, 185b, 186 at the corners on the other side in the width direction and at the approximate center at one side in the longitudinal direction, respectively.
Are drilled. The cutouts 185a and 185b are cutouts for releasing interference with screwed portions of the circuit board 61, and the cutouts 186 are for releasing interference with the engagement protrusions 124 when mounted on the mounting base 120. Notch.

The main body frame 187 is formed by bending a stamped and formed metal plate, has an opening 188 on the lower surface, and has a shape having side walls all around its outer peripheral edge. I have. An engagement piece 1 having an L-shaped cross section is provided on the inner peripheral edge of the opening 188 on both sides in the width direction.
Reference numeral 89 is formed with a predetermined length, and a locking piece 190 having a locking hole 190a is formed on one longitudinal side of the inner peripheral edge. In the remaining lower surface area other than the opening 188, a plurality of elliptical transparent holes 191 are formed. At both ends on one side in the width direction in the lower surface area,
A mounting piece 192 having a mounting hole 192a formed therein is formed.
An engagement piece 193 provided with a is formed. The attachment piece 192 and the engagement piece 193 are formed by bending a part of the stamped metal plate upward. The tip of the engaging piece 189 is slightly bent downward so that the engaging piece 189 is easily engaged with the engaging rail 121 on the mounting base 120 when mounted on the mounting base 120.

On the other hand, on the side wall of the main body frame 187, there are formed mounting pieces 194 in which mounting holes 194a are formed in three side walls except for one side wall in the width direction. This mounting piece 194 is
It is bent inward with an L-shaped cross section. Mounting piece 1
The upper portions of the three side walls on which 94 are formed are formed as contact piece portions 187a that have an L-shaped cross section and are bent inward. The amount of inward bending of the contact piece 187a is set to the same value as the thickness of the side wall of the lid frame 168. In other words, the lid 160 and the box body 18
0, the side wall surface of the lid frame 168 is
It is set so as to be located on the same plane as the side wall surface of 87. A positioning recess 195 is formed in each contact piece 187a in the longitudinal direction of the main body frame 187. The positioning concave portion 195 engages with the positioning protrusion 174 on the lid frame 168 side to perform positioning at the time of assembling with the lid 160. A fixing piece 196 bent inward is formed on one side wall in the width direction of the main body frame 187. The fixing piece 196 fixes the circuit board 61 by sandwiching the upper surface of the circuit board 61 in a mounted state, and prevents the circuit board 61 from being damaged due to disconnecting a connector from the circuit board 61 or the like. On the other hand, on the other side wall in the width direction of the main body frame 187, a heat radiation hole 197 is formed. Reinforcing pieces 198 extend from both side walls in the width direction of the main body frame 187 at both ends in the longitudinal direction.
The reinforcing piece 198 is bent inward from the extending portion, thereby pressing both side walls in the longitudinal direction of the main body frame 187 from inside, thereby improving the strength of the main body frame 187.
Also, since the gap between the side walls is closed, it is impossible to illegally remodel by widening the side walls. Such a reinforcing piece may be provided not only on the main body frame 187 but also on the lid frame 168 side.

The lid 160 and the box body 180 described above are configured as an assembly (circuit board box 62 ") in which the circuit board 61 is housed by the following assembly: First, the circuit board 61 and the bottom plate. 181, and is mounted on the main body frame 187. At this time, the circuit board 6
The upper surface of 1 is sandwiched between the fixing pieces 196. Next, the engaging projection 193a of the engaging piece 193 is inserted into the engaging hole 78 of the circuit board 61, while the stop hole 7 of the circuit board 61 is inserted.
The circuit board 61 is fixed to the main body frame 187 with the bottom plate 181 interposed therebetween by fixing screws 7 to the mounting holes 192a of the mounting pieces 192. In addition, in the fixing of the circuit board 61, when the hole positions of the stop hole 77 and the mounting hole 192a are matched, the circuit board 61 is slightly displaced, so that the engaging projection 193a and the engaging hole 78 are engaged. The one side in the width direction of the circuit board 61 which is not screwed is also fixed.

Next, the box body 1 whose upper surface is open
The cover 160 is put on the cover 80. At this time, the partition wall 168a of the lid 160 is connected to the electronic component mounting area 7 of the circuit board 61.
4 and the connector mounting area 76 are partitioned inside and outside the lid frame 168. On the other hand, the inner surface of the side wall other than the partition wall 168a has the contact piece 187 on the box body 180 side.
a and is flush with the side wall surface of the main body frame 187. The positioning projection 174 on the lid 160 side is aligned with the positioning recess 195 on the box body 180 side.
Is engaged with the cover 160 and the box body 18.
0 is positioned relative to each other. Then, in the two directions A and C shown in FIGS.
The mounting holes 194a, 165a of the upper plate 161 and the mounting holes 172 of the lid frame 168 are fastened together with screws 175, and the mounting holes 194a of the main frame 187 and the mounting holes 172 of the lid frame 168 are With a screw 175,
The screw 175 stop portion is covered with a rectangular hologram seal 200 from above and sealed. Thereby, the lid 160
(Circuit board box 62 ″) in which the circuit board 61 is housed in a fixed state in the internal space between the box and the box body 180
Is configured.

The screw (flat screw) 175 for fastening the main frame 187, the upper plate 161, and the lid frame 168 together has a head that enters the side wall surface of the lid frame 168 and is fastened to the end of the head. The plane is located on the same plane as the side wall surface of the lid frame 168. Also, the hologram seal 200 for sealing the screw 175 stop portion has a box 62 ″ in the longitudinal direction.
Are arranged in parallel with the vertical direction of the
0, while the lower end is positioned on the side wall surface of the main body frame 187. That is, the hologram seal 200 is securely stuck on a flat surface formed by the side walls of the lid frame 168 and the main body frame 187.

As described above, the circuit board box 62 ″ according to the seventh embodiment includes a lid 160 and a box body 180.
The cover of the circuit board 61 is ensured by sealing the portion where the screw 175 is fixed with the hologram seal 200. In the circuit board box 62 ″, the side wall surface on which the screw 175 is formed has a flat surface shape, and the side wall surface of the lid frame 168, the side wall surface of the main body frame 187, and the upper surface of the upper plate 161 constitute the flat surface. Hologram Sticker 2
00 is affixed. Therefore, the hologram seal 200 is stuck to the screw 175 fixing portion and the joint surface between the lid 160 and the box main body 180 and the joint surface between the upper plate 161 and the lid frame 168, and the circuit is more reliably formed. Substrate 6
1 is ensured. Further, similarly to the circuit board box 62, in the circuit board box 62 ″, the conductive plate 176 is electrically connected to the box body 180 having conductivity in the assembled state.
Specifically, the conductive plate 176 is attached to the lid frame 168 so that the conductive plate 176 and the lid frame 168 conduct, and the lid frame 168 is connected.
And the body frame 187 are electrically connected. For this reason, the outer peripheral wall of the box 62 ″ including the lid 160 and the box body 180 can be made entirely conductive, and thus the electromagnetic shielding effect of the box 62 ″ is further improved.

In each of the above embodiments, the board storage box of the present invention is a circuit board box for storing a game control circuit board for a ball game machine, but the present invention is not limited to this. For example, a board storage box for storing a prize ball payout control board or the like may be used. In other words, any board storage box that needs to prevent illegal acts on the internal circuit board may be used. Further, the gaming machine may be a gaming machine other than a ball-and-ball gaming machine (for example, a slot machine, a coin game, or the like). Furthermore, the materials forming the various constituent members are not particularly limited to those described in the embodiment. For example, the transparent upper plate may be formed of a glass material instead of a transparent synthetic resin. In addition, the conductive plate of the present embodiment covers almost the entire upper surface of the circuit board box, so that the outer peripheral wall is in an entire conductive state. However, the present invention is not limited to this, and the conductive plate may cover only a part of the upper surface. Good. However, it goes without saying that the electromagnetic shielding effect (electrostatic prevention effect) is higher when the outer peripheral wall is entirely in a conductive state.

The following can be grasped from the embodiments described above. (1) The conductive plate is attached by welding or bonding from the inside of the cover base. With this configuration, welding (adhesion) between the conductive plate and the cover base is performed.
In a case where the circuit board is dishonestly acted by cutting off the portion, the conductive plate falls onto the circuit board, and the conductive plate prevents the circuit board from being modified even if it is attempted.

[0061]

As is apparent from the above description, according to the first aspect of the present invention, in a board storage box of a gaming machine for storing a circuit board in a covered state, a mounting board for mounting the circuit board is provided. A cover having a planar conductive plate having conductivity and transparency attached to a cover base, and a cover member covering an upper portion of the mounting board so that the circuit board can be visually recognized from the outside. And the conductive plate is electrically connected to the mounting substrate when the mounting substrate and the cover member are assembled. With this configuration, the conductive state can be achieved in the same manner as when the substrate storage box including the cover member and the mounting substrate is entirely covered with one conductive member. For this reason, the electromagnetic shielding effect (antistatic effect) of the box can be further enhanced. Further, when grounding is performed using a ground wire to enhance the electromagnetic shielding effect (static electricity prevention effect), it is not necessary to provide a separate ground wire for the lid and the box body as in the related art.

According to a second aspect of the present invention, a ground line is provided on the circuit board, and the mounting board and the conductive plate are electrically connected to the ground line when the mounting board and the cover member are assembled. Since the grounding effect can be obtained by assembling the board storage box, it is not necessary to provide a ground wire, and the workability of assembling can be improved.

In the third aspect of the present invention, when the conductive plate is attached to the cover base, the direction is regulated so that the conductive plate is assembled in a direction in which the conductive base is connected to the mounting base. A mounting error such as mounting can be avoided, and when the board storage box as an assembly is completed, the conductive plate can be reliably connected to the mounting board.

[Brief description of the drawings]

FIG. 1 is a front view showing a ball game machine according to a first embodiment of the present invention.

FIG. 2 is a rear view showing the ball game machine.

FIG. 3 is a perspective view showing a circuit board box and a mounting base.

FIG. 4 is an exploded perspective view showing a lid.

FIG. 5A is an explanatory diagram showing set dimensions of a lid frame, and FIG. 5B is an explanatory diagram showing set dimensions of a conductive plate.

FIG. 6 (A) is an explanatory view showing a state where a conductive plate is correctly attached to a lid frame, and FIG. 6 (B) is an explanatory view showing a state where the conductive plate is attached to the lid frame upside down. .

FIG. 7 is an exploded perspective view showing a box body and a circuit board.

FIG. 8A is a plan view showing a screwed portion of the circuit board, and FIG. 8B is a longitudinal sectional view showing the screwed portion of the circuit board.

FIG. 9A is a partial longitudinal sectional view showing a state where the conductive plate is electrically connected to the main body frame by screwing the lid and the box main body, and FIG. 9B is a partial longitudinal sectional view showing the lid and the box main body; 3 is a partial longitudinal sectional view showing an assembled state of FIG.

FIG. 10A is an explanatory diagram showing set dimensions of a lid frame in the second embodiment, and FIG. 10B is an explanatory diagram showing set dimensions of a conductive plate in the second embodiment.

FIG. 11 is a perspective view illustrating an attached state of a conductive plate and a lid according to a third embodiment.

FIG. 12 is a perspective view illustrating a circuit board box and a mounting base according to a fourth embodiment.

FIG. 13 is an exploded perspective view showing a lid according to a fourth embodiment.

FIG. 14A is an explanatory view showing a state in which a conductive plate is correctly attached to a lid frame of the fourth embodiment, and FIG.
FIG. 10 is an explanatory view showing a state in which a conductive plate is mounted upside down on a lid frame of the fourth embodiment.

FIG. 15A is a plan view showing a screwed portion of the circuit board of the fourth embodiment, and FIG. 15B is a longitudinal sectional view showing the screwed portion of the circuit board of the fourth embodiment. It is.

FIG. 16A is a longitudinal sectional view showing a state where a conductive plate is locked to a locking portion of a lid frame according to the fourth embodiment, and FIG. 16B is a lid frame according to the fourth embodiment. FIG. 5 is a longitudinal sectional view showing a state where the conductive plate is locked by the locking claws.

FIG. 17A is a longitudinal sectional view showing a mounting position of an outer peripheral end of a conductive plate in a fourth embodiment, and FIG. 17B is a guide portion of a main body frame in the fifth embodiment; FIG. 13C is a longitudinal sectional view showing a state in which the outer peripheral end of the conductive plate is closed with a guide piece screwed to the main body frame of the sixth embodiment. It is.

FIG. 18 is a perspective view illustrating a circuit board box and a mounting base according to a seventh embodiment.

FIG. 19 is an exploded perspective view showing a lid according to a seventh embodiment.

FIG. 20 is an exploded perspective view showing a box body and a circuit board according to a seventh embodiment.

[Explanation of symbols]

 Reference Signs List 1 ball game machine (game machine) 40 game board 50 mechanism board 61 game control circuit board (circuit board) 61a ground line 62 circuit board box (board storage box) 80 cover (cover member) 81 cover frame (cover base) 84 welding protrusion 86 engaging claw 87 mounting piece 94 conductive plate 96 insertion hole 98 mounting piece 95 conductive fiber 100 box body (mounting board) 101 bottom plate 104 body frame 112 mounting piece 113 recess 117/118 hologram seal 120 mounting base

Claims (3)

[Claims] 1. A board storage box of a gaming machine for storing a circuit board in a covered state, wherein a mounting board for mounting the circuit board and a flat conductive plate having conductivity and transparency are mounted on a cover base. And a cover member that covers the upper side of the mounting board so that the circuit board can be visually recognized from the outside, and the conductive board is provided with conductivity while the mounting board and the cover member are assembled. A board storage box for a gaming machine, wherein the board is electrically connected to a mounting board. 2. A ground line is provided on the circuit board, and the mounting board and the conductive plate are electrically connected to a ground line when the mounting board and the cover member are assembled. 2. The board storage box of the gaming machine according to 1. 3. The gaming machine according to claim 1, wherein, in attaching the conductive plate to the cover base, a direction is regulated so that the conductive plate is assembled in a direction in which the conductive base is connected to the mounting base. PCB storage box.