JP2006038667A - Circuit board and game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circuit board capable of raising test efficiency, and a game machine using the circuit board. <P>SOLUTION: As a main board, a sub-board and an attachment board of a game machine, the circuit board 100 where a plurality of integrated circuit elements are mounted are used. On the circuit board 100, a multilayer wiring is laid and a multitude of through holes 130 are formed for connecting with each other layers. On the circuit board 100, conductive extension regions 131 are provided around specific through holes 130. The extension regions 131, through holes 130 and wiring connecting them are formed with the same conductive material. The through hole 130 provided with the extension region 131 plays a role of a test terminal by using the extension region 131. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a circuit board provided with multilayer wiring and having a plurality of through holes for connecting each layer, and a gaming machine using the circuit board.

  When testing the electrical characteristics of an integrated circuit element mounted on a circuit board, a dedicated test device is used. An example of such a dedicated test apparatus is a prober. The prober makes a test pin contact a test terminal (test pad) formed on a circuit board, and performs an electrical test of the integrated circuit element by a tester connected to the test pin. Here, the test terminal is formed at a predetermined location on the circuit board, and the test terminal and the terminal of the predetermined integrated circuit element are connected by a wiring pattern. Recently, a technique of using a through hole formed in a circuit board as a test terminal has also been proposed (see, for example, Patent Document 1).

JP 2001-330641 A

  By the way, when using a through hole as a test terminal, it is very difficult to visually identify the through hole to be used as a test terminal because the through hole is very small. Further, even if such a through hole is specified, it is difficult to properly bring the test pin into contact with the through hole, and a test pin contact error is likely to occur. For this reason, it took a long time to perform the test, and there was a problem that the test efficiency was lowered.

  The present invention has been made based on the above circumstances, and an object of the present invention is to provide a circuit board capable of increasing test efficiency and a gaming machine using the circuit board.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a circuit board in which a multi-layer wiring is provided and a plurality of through holes for connecting the respective layers are formed. This is characterized in that a conductive expansion region is provided on the surface.

  According to a second aspect of the present invention, in the circuit board according to the first aspect, the extension region, the through hole, and a wiring connected to these are formed of the same conductive material. .

  A game machine according to a third aspect of the invention for achieving the above object comprises the circuit board according to the first or second aspect.

  According to a fourth aspect of the present invention, in the gaming machine according to the third aspect, the circuit board is used as a main board that controls game contents and a sub board that assists the control performed by the main board. It is what.

  In the circuit board according to the first aspect of the present invention, by providing a conductive extended region around the predetermined through hole, the through hole serves to connect the respective layers, and the extended region is It can be used as a test terminal. Moreover, through holes can be easily distinguished from the circuit board through holes serving as test terminals, and the probe pins of the prober can be easily brought into contact with the through holes. Therefore, the use of such a circuit board can improve the test efficiency.

  In the circuit board according to the second aspect of the present invention, since the extension region, the through hole, and the wiring connected to these are formed of the same conductive material, a manufacturing process for forming the extension region is not newly added. The circuit board can be manufactured.

  In the gaming machine according to the third aspect of the invention, by providing the circuit board according to the first or second aspect, the test efficiency of the circuit board used in the gaming machine can be increased.

  In the gaming machine according to the fourth aspect of the present invention, the circuit board is used as the main board for controlling the game contents and the sub board for assisting the control performed by the main board, thereby testing the main board and the sub board. Efficiency can be increased.

  The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic front view of a gaming machine according to an embodiment of the present invention, and FIG. 2 is a schematic block diagram of the gaming machine. Here, a case where the gaming machine is a so-called pachislot machine called a pachislot machine will be described.

  As shown in FIG. 1 and FIG. 2, the spinning-type game machine of this embodiment includes a main board 10, five sub-boards 20 </ b> A, 20 </ b> B, 20 </ b> C, 20 </ b> D, 20 </ b> E, a first spinning reel 31 a, Second drum reel 31b, third drum reel 31c, first drum reel driving means 32a, second cylinder reel driving means 32b, third cylinder reel driving means 32c, display window 33, and medal insertion Mouth 34, medal discharge port 35, medal tray 36, insertion medal sensor 41, MAX bet button 42, one-sheet insertion button 43, start lever 44, first stop button 45a, and second stop button 45b, a third stop button 45c, a clearing button 46, a door sensor 47, a payout medal sensor 51, a payout motor 52, an effect control board 60, an image display unit 70, an illumination display unit 80, Speedy And a section 90.

  The main board 10 mainly performs control of game contents and payout of medals (game media). A plurality of integrated circuit elements such as a CPU and a ROM, and a plurality of electronic components such as capacitors are mounted on the main substrate 10. Such integrated circuit elements and electronic components are mounted not only on the front surface of the main substrate 10 but also on the back surface. The main substrate 10 is provided with multilayer wiring. Wirings formed in each layer are connected to each other through a large number of through holes formed in the main substrate 10. The ROM of the main board 10 stores various programs relating to game content control and the like. The CPU of the main board 10 executes the program stored in the ROM, thereby controlling the game contents, specifically, the management of the game state, the internal lottery process based on the random number value, the spinning reels 31a, 31b, 31c drive / stop processing, signal transmission processing to the effect control board 60, and the like are performed.

  The sub-boards 20A, 20B, 20C, 20D, and 20E are for assisting the control performed by the main board 10. That is, the sub-boards 20A, 20B, 20C, 20D, and 20E are formed on a board different from the main board 10 but are functionally boards belonging to the main board 10. For example, each of the sub-boards 20A, 20B, 20C, 20D, and 20E transmits or receives a signal necessary for the main board 10 to control the game contents or the medal payout to the main board 10 or receive it from the main board 10. To do. Specifically, the contents of these sub-boards are a reel board 20A, an operation part relay board 20B, a middle board 20C, a power board 20D, and a payout board 20E. A plurality of integrated circuit elements are mounted on each sub-board 20A, 20B, 20C, 20D, 20E. Each sub-board 20A, 20B, 20C, 20D, 20E is provided with multilayer wiring. And in each sub-board | substrate 20A, 20B, 20C, 20D, 20E, the wiring formed in each layer is connected mutually through many through holes.

  On the other hand, the effect control board 60 mainly performs control related to game effects. The effect control board 60 is functionally independent from the main board 10 in that it performs control related to game effects, and therefore has a completely different role from the sub boards 20A, 20B, 20C, 20D, and 20E. . The effect control board 60 controls the image display unit 70, the electrical decoration display unit 80, and the speaker unit 90 based on the signal from the main board 10.

  The reel substrate 20A controls the first drum reel driving unit 32a, the second drum reel driving unit 32b, and the third cylinder reel driving unit 32c based on a signal from the main substrate 10. The first drum reel drive means 32a drives the first drum reel 31a, the second drum reel drive means 32b drives the second drum reel 31b, and the third drum reel drive means 32c. Drives the third cylinder reel 31c. Here, as each reel drive means 32a, 32b, 32c, for example, a stepping motor is used. As shown in FIG. 1, the first spinning reel 31a, the second spinning reel 31b, and the third spinning reel 31c are arranged slightly above the center of the spinning reel game machine. Each spinning reel 31a, 31b, 31c has a symbol row in which a plurality of symbols are arranged in a row, and is configured to be rotatable.

  A transparent display window 33 is provided at a position corresponding to the reel reels 31a, 31b, 31c. The player displays three symbols attached to each of the spinning reels 31a, 31b, 31c from the display window 33 when the first spinning reel 31a, the second spinning reel 31b, and the third spinning reel 31c are stopped. Visually visible.

  The operation unit relay board 20B transmits a signal sent from a predetermined operation unit to the main board 10 or transmits a signal sent from the main board 10 to a predetermined operation unit. Here, the operation unit includes, for example, a insertion medal sensor 41, a MAX bet button 42, a one-sheet insertion button 43, a start lever 44, a first stop button 45a, a second stop button 45b, a third stop button 45c, and a checkout button. 46, door sensor 47, and the like.

  The inserted medal sensor 41 is provided inside a medal insertion slot 34 through which a player inserts medals, and detects that a medal has been inserted into the medal insertion slot 34. A detection signal from the inserted medal sensor 41 is sent to the main board 10 via the operation unit relay board 20B.

  The MAX bet button 42 and the single insert button 43 are game instruction means for instructing to bet a medal and play a game (game). The MAX bet button 42 is a button for selecting to play a game by betting three medals, and the one-insert button 43 is for selecting a game by betting one, two or three medals. It is a button to do. Specifically, by pressing the single insertion button 43 once, it is selected to play a game with one medal, and by pressing the single insertion button 43 twice, a game with two medals bet. Is selected, and by pressing the one-piece insertion button 43 three times, it is selected to play the game with three medals bet. In other words, pressing the single-load button 43 three times is the same as pressing the MAX bet button 42 once. When the MAX bet button 42 is pressed, a signal indicating that the MAX bet button 42 has been pressed is sent to the main board 10 via the operation unit relay board 20B. In addition, when the single sheet insertion button 43 is pressed, a signal indicating that the single sheet insertion button 43 has been pressed is sent to the main substrate 10 via the operation unit relay substrate 20B.

  In the present embodiment, six winning lines are set for stopping the three reel reels 31a, 31b, and 31c and aligning predetermined symbols. That is, three lines extending in the horizontal direction through each of the upper, middle and lower portions of the display window 33, lines extending from the upper left to the lower right of the display window 33, and from the lower left to the upper right of the display window 33. And a line extending from the middle of the left portion of the display window 33 toward the middle of the central portion and extending from the middle of the central portion toward the lower right. The effective winning line varies depending on how many medals are bet. When a game is played with one medal bet, only one winning line that extends in the horizontal direction through the center of the display window 33 is an effective winning line. When a game is played with two medals bet, only three winning lines extending in the horizontal direction through the upper, central and lower parts of the display window 33 are effective winning lines. When a game is played with three medals, all six pay lines are valid pay lines. When the three reel reels 31a, 31b, and 31c are stopped, when a predetermined symbol is aligned on a valid winning line among the six winning lines and a predetermined combination is established, the game is won, and a predetermined number of Medals are paid out.

  The start lever 44 is operated by the player to instruct to start the game. When the start lever 44 is operated, a signal indicating that the start lever 44 has been operated (game start signal) is sent to the main board 10 via the operation unit relay board 20B. When the main board 10 receives the game start signal, the main board 10 starts to rotate the three spinning reels 31a, 31b, and 31c.

  The first stop button 45a is for instructing to stop the rotation operation of the first drum reel 31a, and the second stop button 45b is for instructing to stop the rotation operation of the second drum reel 31b. The third stop button 45c is for instructing to stop the rotation operation of the third drum reel 31c. When the first stop button 45a is pressed, a signal indicating that the first stop button 45a has been pressed is sent to the main board 10 via the operation unit relay board 20B. When the second stop button 45b is pressed, a signal indicating that the second stop button 45b has been pressed is sent to the main board 10 via the operation unit relay board 20B. When the third stop button 45c is pressed, a signal indicating that the third stop button 45c has been pressed is sent to the main board 10 via the operation unit relay board 20B. When the main board 10 receives a signal indicating that each of the stop buttons 45a, 45b, and 45c has been pressed, the main board 10 stops the rotation operation of the spinning reel corresponding to the stop button. Thus, when the three reel reels 31a, 31b, 31c are stopped, a combination is established if the symbols attached to the reel reels 31a, 31b, 31c are in a specific combination on the effective winning line. For example, a predetermined number of medals are paid out.

  The checkout button 46 is for instructing to release a number of medals corresponding to the current number of credits. When the clearing button 46 is pressed, a signal indicating that the clearing button 46 has been pressed is sent to the main board 10 via the operation unit relay board 20B. When the main board 10 receives a signal indicating that the settlement button 46 has been pressed, the main board 10 sends a predetermined signal to the payout board 20E via the power supply board 20D, and the number of medals corresponding to the current number of credits is given to the medal outlet 35. To release from. The medal tray 36 is a tray for accumulating medals released from the medal discharge port 35.

  The door sensor 47 is for detecting that the door portion of the spinning cylinder type game machine is in an open state. When the door sensor 47 detects that the door portion is in an open state, the door sensor 47 transmits a signal indicating that the door portion is in an open state to the main substrate 10 via the operation unit relay substrate 20B. Based on the signal from the door sensor 47, the main board 10 recognizes that the door portion is in an open state.

  The middle board 20C is provided with a payout number display part 21c and a credit number display part 22c. The number-of-payout display unit 21c displays the number of medals to be paid out in accordance with the established combination when a predetermined combination is established in the game. The credit number display unit 22c displays the number of medal credits within a predetermined range. For example, the maximum number of credits can be displayed up to 50. In the present embodiment, for example, a display device including a plurality of LEDs is used as the payout number display unit 21c and the credit number display unit 22c. The main board 10 controls the payout number display part 21c and the credit number display part 22c by transmitting a predetermined signal to the middle board 20C.

  The power supply board 20D is for supplying power from an external commercial power supply to the main board 10 and the like. The payout board 20 </ b> E is for controlling the payout of medals based on a signal from the main board 10. In the present embodiment, the payout board 20E is connected to the power supply board 20D, and therefore, signal transmission with the main board 10 is performed via the power supply board 20D.

  The payout motor 52 is for driving a medal payout device (not shown). Specifically, when the payout board 20E sends a motor drive signal to the payout motor 52, the payout motor 52 drives the medal payout device, and the medal is paid out. The payout medal sensor 51 is for detecting a payout medal. The payout medal sensor 51 sends a predetermined signal to the payout board 20E each time a medal is paid out. Then, the payout board 20E transmits a signal from the payout medal sensor 51 to the main board 10 via the power supply board 20D. Thereby, the main board | substrate 10 can recognize how many medals were discharge | released.

  The image display unit 70 is provided on the upper side of the display window 33. In the present embodiment, a liquid crystal display device is used as the image display unit 70. As shown in FIGS. 1 and 2, the image display unit 70 includes a liquid crystal panel 71 and a liquid crystal control board 72 that controls the liquid crystal panel 71. The image display unit 70 variably displays images of a plurality of characters, numbers, figures, characters, and the like, thereby performing the advance notice of the winning combination, notification of predetermined information, and other game effects. The control of the image display unit 70 is performed by the effect control board 60 based on a signal from the main board 10.

  As shown in FIGS. 1 and 2, the electrical decoration display unit 80 includes a plurality of LED substrates 81 on which LEDs are mounted. Each LED board 81 is provided on the left side, the center, and the right side of the upper part of the spinning cylinder type game machine, and on the left side and the right side of the display window 12. The electrical display unit 80 notifies various game states and provides game effects. The control of the electrical display unit 80 is performed by the effect control board 60 based on a signal from the main board 10. In FIG. 2, only one LED substrate 81 is shown as a representative.

  The speaker unit 90 is provided on the front side of the swivel game machine. The speaker unit 90 is used to produce a game with sound. The control of the speaker unit 90 is performed by the effect control board 60 based on a signal from the main board 10.

  In general, in a gaming machine such as a swivel type gaming machine or a pachinko gaming machine, circuit boards other than the main board 10 and the sub boards 20A, 20B, 20C, 20D, and 20E are referred to as peripheral boards. That is, in the example of FIGS. 1 and 2, the effect control board 60, the liquid crystal control board 72, and the LED board 81 are peripheral boards. A plurality of integrated circuit elements and a plurality of electronic components are mounted on the peripheral substrate. The peripheral board is provided with multilayer wiring, and the wirings formed in each layer are connected to each other through a large number of through holes formed in the peripheral board.

  In the swivel type gaming machine of the present embodiment, each circuit board of the main board 10, the sub boards 20A, 20B, 20C, 20D, and 20E and the peripheral boards 60, 72, and 81 is electrically conductive around a predetermined through hole. A circuit board provided with an extension region is used. Hereinafter, such a circuit board will be described in detail. FIG. 3A is a schematic partial enlarged view of a circuit board used in the swivel game machine of the present embodiment, and FIG. 3B is a schematic partial cross-sectional view of the circuit board.

  As shown in FIG. 3, the circuit board 100 used for the main board 10, the sub boards 20A, 20B, 20C, 20D, and 20E and the peripheral boards 60, 72, and 81 includes a plurality of integrated circuit elements 110 such as a CPU and a capacitor. A plurality of electronic components (not shown), a large number of wirings 120, and a large number of through holes 130 are provided. The circuit board 100 is provided with multilayer wiring, and the integrated circuit element 110 and electronic components are mounted not only on the front surface but also on the back surface of the circuit board 100. The wiring 120 is formed in each layer of the circuit board 100. FIG. 3 shows a case where the wiring is a two-layer wiring formed on the front surface and the back surface of the substrate. In FIG. 3A, only one wiring 120 is shown and the other wirings are omitted.

  The through hole 130 is for connecting each layer and is formed at a predetermined location on the circuit board 100. The through hole 130 is covered with a conductive material. In the example of FIG. 3, the diameter of the through hole 130 is about 0.5 mm.

  In the present embodiment, a predetermined part of the through-holes 130 among the large number of through-holes 130 has a conductive extended region 131 around the through-hole 130 on the upper surface of the circuit board 100 as shown in FIG. Is forming. The shape of the extended region 131 is a substantially annular shape. Further, the extended region 131, the through hole 130, and the wiring 120 connected thereto are formed of the same conductive material.

  The extended region 131 is an enlarged region connecting the wiring 120 and the through hole 130 on the upper surface of the circuit board 100, and constitutes a part of the through hole 130. By providing the conductive extended region 131 around the through hole 130 in this way, the through hole 130 serves to connect each layer and also serves as a test terminal using the extended region 131. Can fulfill. For example, the electrical characteristics of the integrated circuit device 110 can be tested by bringing the probe pin of the prober into contact with the extended region 131. For this reason, it is desirable that the size of the extension region 131 is at least large enough to allow the probe pin of the prober to be easily contacted. In the example of FIG. 3, the outer diameter of the expansion region 131 is twice the diameter of the through hole 130, that is, about 1.0 mm. In addition, such a test may be performed at the time of board development. In such a case, since the operator manually performs the test, the size of the extension region 131 is determined by the operator with the naked eye. It is desirable that the size be discriminable.

  The extension region 131 is formed on the upper surface side of the circuit board 100. Generally, the test terminal is formed on the upper surface side of the circuit board, and the test is performed by bringing the test pin of the prober into contact with the test terminal from the upper side of the circuit board. An extended region 131 that fulfills the above is formed on the upper surface side of the circuit board 100. However, in some cases, the extended region 131 can be formed on the lower surface side of the circuit board 100 or on the upper surface side and the lower surface side of the circuit board 100.

  Such an extended region 131 is not necessarily provided for all the through holes 130. Since the extended region 131 is also used as a test terminal, it is sufficient to provide it only for the through hole 130 where it is necessary to provide the test terminal. Therefore, the circuit designer designs the wiring pattern on the circuit board 100 in consideration of the necessity of providing test terminals in advance. Specifically, when it is necessary to provide a test terminal at a certain location, a wiring pattern is designed so that a through hole is forcibly formed at that location and an extended region is provided in the through hole. In addition, when there is already a through hole necessary for connection between each layer, and it is desired to use the through hole as a test terminal, the wiring pattern is designed so as to provide an extended region in the through hole.

  By the way, with respect to gaming machines such as a swivel type gaming machine and a pachinko gaming machine, a test terminal is not provided on the main board and the sub board from the viewpoint of preventing fraud. In fact, this is stipulated by law. This is because if a test terminal is provided on the main board and the sub board, the test terminal may be used to input an illegal signal. On the other hand, there is no such limitation for the peripheral substrate. This is because the peripheral board performs control related to the production of the game, and therefore, the request for preventing fraud is not so strictly required for the peripheral board.

  In the present embodiment, as described above, the circuit board 100 in which the extension area 131 is provided around the predetermined through hole 130 is used for the main board 10 and the sub boards 20A, 20B, 20C, 20D, and 20E. The through hole 130 provided with 131 is also used as a test terminal. According to the standard of gaming machines, the “test terminal” is interpreted as a dedicated terminal used for testing. In the present embodiment, the extended region 131 constitutes a part of the through hole 130. Therefore, the through hole 130 serves as a test terminal as well as a role of connecting each layer. This is not a test terminal. For this reason, in the swivel type gaming machine of this embodiment, the circuit board 100 is used for the main board 10 and the sub boards 20A, 20B, 20C, 20D, and 20E. This is in conflict with the above-mentioned laws and regulations. Not what you want.

  In addition, a hole is formed in the circuit board, and a conductive expansion region is formed around the hole. If the hole does not serve to connect the layers, the hole Cannot be said to be a through-hole, but is considered to be used as a dedicated test terminal. Therefore, in this case, if such a circuit board is used for the main board 10 or the sub-boards 20A, 20B, 20C, 20D, and 20E, the above-mentioned laws and regulations are violated.

  When testing the electrical characteristics of the integrated circuit element 110 for each circuit board 100 of the main board 10, the sub boards 20B, 20C, 20D, and 20E and the peripheral boards 60, 72, and 81, first, The through hole 130 used as a test terminal for the integrated circuit element 110 to be tested this time is specified. At this time, since the wide extension region 131 is formed in the through hole 130, the operator can easily recognize the through hole 130. Next, as shown in FIG. 3 (b), the operator brings the probe pin of the prober into contact with the extended region 131 of the identified through hole 130 from above. At this time, since the extended region 131 is formed to a certain extent, the operator can easily and appropriately contact the probe pin of the prober with the extended region 131. Thereafter, the electrical characteristics of the integrated circuit element 110 are measured by sending a predetermined electrical signal from the prober body to the test pin. Here, the case where the test by the prober is manually performed has been described, but it is naturally possible to perform the test automatically.

  In the swivel type gaming machine of the present embodiment, the circuit board in which the conductive extension region is provided around the predetermined through hole is used for the main board, the sub board, and the peripheral board. In addition to connecting the layers, the expansion region can be used to serve as a test terminal. Moreover, through holes can be easily identified through holes as test terminals, and the probe pins of the prober can be easily brought into contact with the through holes. Therefore, the use of such a circuit board can improve the test efficiency. In addition, since the circuit board can be smoothly tested on the board production line, the production efficiency can be improved. Furthermore, since the circuit board can be debugged easily in the development of the board, the development period of the circuit board can be shortened.

  In addition, since the extension region, the through hole, and the wiring connected to these are formed of the same conductive material, the circuit board can be manufactured without newly adding a manufacturing process for forming the extension region. .

  In addition, this invention is not limited to said embodiment, A various deformation | transformation is possible within the range of the summary.

  In the above-described embodiment, the case where the circuit board of the present invention is used for the main board, the sub board, and the peripheral board in the spinning type gaming machine has been described. However, the circuit board of the present invention is applied to the spinning type gaming machine. In this case, in consideration of the regulation that “the main board and the sub board should not be provided with test terminals”, the circuit board may be used at least for the main board and the sub board, and the peripheral board is not necessarily used. There is no need.

  In the above embodiment, the case where the circuit board of the present invention is applied to a revolving game machine using a medal as a game medium has been described. For example, a game called a parrot machine, a pachilot machine, or the like. You may apply to the slot machine game machine which uses the pachinko ball as a medium. Further, the circuit board of the present invention may be applied to a pachinko gaming machine. Further, the circuit board of the present invention can be used not only for circuit boards in game machines but also for circuit boards mounted on various electronic devices.

  As described above, according to the circuit board of the present invention, by providing a conductive extended region around a predetermined through hole, the through hole serves to connect the respective layers, and The extended area can be used as a test terminal. Moreover, through holes can be easily distinguished from the circuit board through holes serving as test terminals, and the probe pins of the prober can be easily brought into contact with the through holes. For this reason, the use of such a circuit board can improve the test efficiency. Therefore, the circuit board of the present invention can be used for various circuit boards mounted on various electronic devices such as a main board and a sub board in a gaming machine such as a swivel type gaming machine or a pachinko gaming machine. .

It is a schematic front view of the gaming machine which is one embodiment of the present invention. It is a schematic block diagram of the gaming machine. (A) is a general | schematic fragmentary enlarged view of the circuit board used with the swivel type game machine of this embodiment, (b) is a schematic partial sectional view of the circuit board.

Explanation of symbols

10 main board 20A reel board 20B operation part relay board 20C middle board 21c payout number display part 22c credit number display part 20D power supply board 20E payout board 31a first drum reel 31b second drum reel 31c third drum reel 32a first 1st reel drive means 32b 2nd reel drive means 32c 3rd reel drive means 33 display window 34 medal slot 35 medal slot 36 medal tray 41 medal sensor 42 MAX bet button 43 single slot button 44 Start lever 45a First stop button 45b Second stop button 45c Third stop button 46 Checkout button 47 Door sensor 51 Payout medal sensor 52 Payout motor 60 Effect control board 70 Image display section 71 Liquid crystal panel 72 Liquid crystal control board 80 Illumination display section 81 LED board 90 Speaker section 100 times Road board 110 Integrated circuit element 120 Wiring 130 Through hole 131 Expansion area

Claims (4)

In the circuit board where a multi-layer wiring is applied and a number of through holes for connecting each layer are formed,
A circuit board comprising a conductive extension region around a predetermined through hole.   The circuit board according to claim 1, wherein the extended region, the through hole, and a wiring connected to the extended region are formed of the same conductive material.   A gaming machine comprising the circuit board according to claim 1. 4. The gaming machine according to claim 3, wherein the circuit board is used as a main board for controlling game contents and a sub board for assisting control performed by the main board.

Images