JP2006239238A - Game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a game machine which prevents a fraudulent change of winning probability in a setting change operation section. <P>SOLUTION: A setting change button 45 to change winning probability is composed of an upper shift button 45a which gradually increases winning probability every time the button is depressed and a lower shift button 45b which gradually lowers winning probability every time the button is depressed. The upper and lower shift buttons are stored in a common supporting member 45c and made freely rotatable. A function stopping means to stop the function of the other shift button not operated for a fixed period when either the upper shift button or the lower shift button is operated. Furthermore, a display device 46 to display a set value corresponding to a lottery table selected when a setting change is made is provided in the housing of the game machine to ensure that the device is exposed by the opening of a front door 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a gaming machine such as a slot machine installed and used in a game hall such as a pachinko parlor.

  A slot machine installed and used in a game hall such as a pachinko parlor can give medals a certain value, and exchange medals earned by playing games for various prizes. The slot machine is provided with various drive devices such as a lamp device and a sound generation device that are operated based on supply of medals, and a control circuit device corresponding to control these drive devices inside the casing. Therefore, when the player plays a game, the game is filled with interest by appropriately operating these. In recent years, a variable symbol display device such as a reel display device or a liquid crystal image display device capable of variably displaying a predetermined symbol (identification information) is built in, and when a predetermined condition is satisfied, the symbol is changed and then stopped. The thing which operates a symbol variable display apparatus so that it may become the mainstream.

In addition, the slot machine installed in the amusement hall can change the winning probability of a plurality of types of winning roles in six stages, and a setting change operation unit provided with a probability changing setting board for changing the winning probability is provided. Is provided. If the setting change operation unit or probability change setting board is illegally operated, the winning probability will be changed illegally, so the setting change key cylinder that switches whether or not to change the winning probability to the setting change operation unit and winning A setting change button for changing the probability is provided, and the setting change button can be operated by inserting the setting key into the setting change key cylinder and rotating the setting key to a position where the setting change button can be operated. By doing so, it is possible to change the winning probability with the signal from the setting change key cylinder and the signal from the setting change button, or instead of the regular setting key inserted into the setting change key cylinder For example, a dummy setting key is inserted in advance to prevent foreign matter from entering.
JP 2004-135844 A

  However, in the slot machine as described above, for example, there is a so-called goto action in which a foreign object such as a piano wire is inserted and a setting change key cylinder or a setting change button is illegally operated to malfunction and illegally change a winning probability. What happens is a problem. Goto acts are becoming more and more malicious every year, and while the loss of profits at the amusement hall has increased, players have become more dissatisfied with the inability to play games fairly.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a gaming machine that can prevent an unauthorized change of a winning probability in a setting change operation unit.

  In order to achieve the above object, the gaming machine of the present invention exposes a plurality of lottery tables having different winning probabilities and a front door that covers the front surface of the gaming machine housing so as to be operable, A setting change operation unit that is operated when selecting one of a plurality of lottery tables, and in the gaming machine in which a game is executed using the lottery table selected by the setting change operation unit, the setting change The operation unit includes an up-shift button for selecting one of the plurality of lottery tables so that the winning probability for each pressing operation is sequentially increased, and the winning probability for each pressing operation is sequentially A lower shift button for selecting one of the plurality of lottery tables and a common button support member on which these shift buttons are juxtaposed, and the upper shift button It said button support member so down the position of the lower shift button changes is rotatably supported.

  Further, there is provided a function stop means for stopping the function of the other button for a certain period when one of the up / down shift buttons is operated.

  Further, a display device for displaying a set value corresponding to the selected lottery table is provided, and this display device is provided inside the gaming machine so that it can be observed by opening the front door. .

  According to the gaming machine of the present invention, the upper shift button that selects one of the plurality of lottery tables so that the winning probability of winning per order is sequentially increased every time the setting change operation unit performs the pressing operation, and the pressing It is composed of a lower shift button for selecting one of the plurality of lottery tables so that the winning probability per winning operation is sequentially reduced, and these shift buttons are used as a common button support member. Since the button support member is rotatably supported so that the positions of the upper shift button and the lower shift button are changed, the upper and lower shift buttons are rotated to a position shifted from the normal position. Therefore, since the normal position of the up / down shift button is not known from the outside of the gaming machine, the up / down shift button cannot be operated illegally, and illegal actions can be prevented.

  In addition, when any one of the up / down shift buttons is operated, a function stop means is provided to stop the function of the other shift button that has not been operated for a certain period of time. Even if you try to operate the shift button after inserting it, the position of the tip of the foreign object is unstable, and if you touch the shift button, the shift button will rotate, making it difficult to operate the same shift button continuously, which is illegal The operation of changing the winning probability can be prevented.

  Further, a display device that displays a set value corresponding to the selected lottery table has been conventionally provided on the front surface of the gaming machine. In the present invention, however, the housing of the gaming machine can be viewed by opening the front door. Since it is provided in the body, it is possible to prevent the winning probability from being changed illegally because the result cannot be visually recognized even if the winning probability is changed without opening the front door.

  FIG. 1 shows an appearance of a slot machine 10 which is an embodiment of a gaming machine using the present invention. The slot machine 10 has a transition to a normal mode in which a game is played by betting 1 to 3 medals, a regular bonus (hereinafter referred to as RB) mode, and an RB mode in which the probability of acquiring medals is higher than in the normal mode. A big bonus (hereinafter referred to as BB) mode that is performed a predetermined number of times (for example, three times) is provided. If RB is won in the winning combination lottery in the normal mode and RB is won, the mode is changed from the normal mode to the RB mode. If BB is won in the winning combination lottery in the normal mode and BB is won, the mode is changed from the normal mode to the BB mode. Further, in the RB mode, a game with one medal bet is performed, and the RB mode is ended by winning a maximum of 8 times or playing a maximum of 12 games.

  As shown in FIG. 1, the slot machine 10 includes a housing 11 and a front door 12 that is rotatably attached to the front surface of the housing 11. The front door 12 is divided into two parts, and includes an upper upper door 12a and a lower lower door (door) 12b. The inside of the housing 11 is opened by the upper door 12a and the lower door 12b. A display window 14 is provided on the upper door 12a. A first reel 15a, a second reel 15b, and a third reel 15c are provided in the back of the display window 14. A plurality of types of symbols are arranged on the outer peripheral surfaces of the first to third reels 15a to 15c, and three symbols per reel are displayed through the display window 14 when the reels stop. In the slot machine 10, a total of five straight winning lines, each of which is a combination of the symbols of each reel, are set, three horizontally and two diagonally. A liquid crystal display device 16 is provided on the side of the display window 14 and performs various game effects such as, for example, notifying the type of winning combination won using animation. A display unit 17 is provided below the display window 14. Although the display unit 17 displays numerical values such as the number of times the winning combination is won, the setting value corresponding to the conventional lottery table selected when the winning probability is changed is not displayed. This set value is displayed on a display unit described later provided inside the housing of the gaming machine.

  The lower door 12b has a 1-bet button 18 for inserting medals one by one each time it is pressed, a MAX bet button 19 for inserting 3 medals at a time, and a payout button 20 for paying out credited medals. Various start buttons, the medal insertion slot 21, the start of the rotation of the first to third reels 15a to 15c, and the start lever 22 that is pressed when the changed winning probability is fixed, for stopping the rotating reel, respectively. First to third stop buttons 23 to 25 are provided. In addition, a medal tray 26 is provided on the lower door 12 b, and medals obtained when winning is awarded to the medal tray 26 from the payout opening 27.

  A cylinder 28 is provided on the side of the front surface of the lower door 12b. When a door key, which is a dedicated key, is inserted into the cylinder 28 and rotated, the locking of the lower door 12b is released. As a result, the lower door 12b can be rotated to open the housing 11. When the front door 12 is closed, the upper door 12a and the lower door 12b are engaged, and the lower door 12b is rotated to open the lower portion of the housing 11. When the engagement between the upper door 12a and the upper door 12a is released, the upper door 12a can be rotated.

  As shown in FIG. 2, a setting change device 41 that is operated when selecting a six-stage winning probability is provided inside the slot machine 10. The setting change device 41 is provided in the back of the lower door 12b. When the lower door 12b is rotated, the setting change device 41 is exposed to the outside.

  As shown in FIG. 3, a setting change key cylinder 42 that switches between enabling or disabling the setting change button 45 that is operated when changing the winning probability is provided on the front of the setting changing device 41. And a power switch 44 for switching the power of the slot machine 10 on / off, a setting change button 45 for changing the winning probability, and a lottery table selected every time the winning probability is changed by the setting change button 45 A display 46 for displaying the set value is provided. The setting change key cylinder 42, the setting change button 45, and the display 46 constitute a setting change operation unit.

  A setting key 43 corresponding to the setting change key cylinder 42 is inserted. After turning the setting key 43 from the OFF position to the ON position with the power switch 44 turned off, turning on the power switch 44 enables the operation of the setting change button 45 to change the winning probability. It becomes possible. At this time, insertion of medals is not accepted, and it is impossible to play a game while changing the winning probability.

  The setting change button 45 includes an upper shift button 45a in which the winning probability is sequentially increased each time the button is pressed, and a lower shift button 45b in which the winning probability is sequentially decreased each time the button is pressed. Each time the upper shift button 45a is pressed, the six-stage winning probability increases in the order of setting value 1 → setting value 2 → setting value 3 → setting value 4 → setting value 5 → setting value 6; Each time 45b is pressed, the winning probabilities in six stages are sequentially changed so as to decrease in the order of setting value 6 → setting value 5 → setting value 4 → setting value 3 → setting value 2 → setting value 1. Go. The set value is associated with the winning probability so that the winning probability increases as the numerical value increases. Since the set values corresponding to the lottery table (described later) selected based on the changed winning probability are sequentially displayed on the display unit 46, the winning probability can be changed while checking the set values. When the start lever 22 is pressed after the change of the winning probability with the setting change button 45 is completed, the winning probability selected as a result of the changing operation is confirmed. When the setting key 43 is turned to the OFF position after the selected winning probability is confirmed, the change of the winning probability is completed, and a game can be played.

  As shown in FIG. 4, the upper shift button 45a and the lower shift button 45b constituting the setting change button 45 have a shape in which a semicircular kamaboko-shaped columnar portion and a cylindrical portion are integrated in the longitudinal direction. The diameter of the cylindrical part 45a ′ of the upper shift button 45a is slightly larger than the diameter of the cylindrical part 45b ′ of the lower shift button 45b. In addition, near the tip of each kamaboko type columnar part is a kamaboko type columnar part having a slightly smaller radius. The upper shift button 45a and the lower shift button 45b are accommodated in the support member 45c in a form in which the flat portions of the kamaboko-shaped columnar portions face each other. The structure of the support member 45c has a cylindrical shape with a lid 48 and a bottom surface 47 as shown in FIG. There is a partition plate 45d in the center of the inside of the cylinder, and the upper shift button 45a and the lower shift button 45b are accommodated via coil springs 49a and 49b across the partition plate 45d. A cylindrical part 45a ′ of the upper shift button and a cylindrical part 45b ′ of the lower shift button are inserted into the coil springs 49a and 49b, respectively. The bottom surface 47 of the support member 45c is provided with circular openings 47a and 47b through which the cylindrical portions 45a ′ and 45b ′ of the upper shift button 45a and the lower shift button 45b can pass. The lid 48 is provided with semicircular openings 48a and 48b so that the top part of the upper shift button 45a and the lower shift button 45b passes through the semi-cylindrical columnar part.

  FIG. 5 shows a state in which the up / down shift buttons 45a and 45b are housed in the support member 45c. As shown in FIG. 5, the columnar portions at the ends of the up and down shift buttons 45a and 45b protrude from the openings 48a and 48b of the lid of the support member 45c to the outside of the support member 45c. The up / down shift buttons 45a and 45b are normally pushed to the lid side of the support member 45c by coil springs 49a and 49b, and the respective cylindrical portions 45a ′ and 45b ′ are housed inside the support member 45c. Alternatively, when the columnar part at the tip of each 45b is pressed, it is pushed out from the opening 47a or 47b on the bottom surface of the support member 45c to the outside of the support member 45c.

  The up / down shift buttons 45a and 45b are housed in the support member 45c and housed in the setting change device 41 together with the setting change key cylinder 42 as the setting change button 45. FIG. 6 shows a state in which the setting change button 45 is assembled to the setting change device 41. The tip portions of the up and down shift buttons 45a and 45b are out of the front surface of the setting change device 41 so that they can be operated easily. The setting change device 41 is provided with an opening 45e for receiving a setting change button 45 and a cylinder 51 having a bottom surface 51c on the inner side of the setting change device 41 of the opening 45e. The setting change button 45 is passed through the opening 45e. It is stored in the cylinder 51.

  The cylinder 51 is fixed to the front plate of the setting change device 41, and the setting change button 45 can be rotated together with the support member 45c in the cylinder 51. In FIG. 6, the setting change button 45 is rotated and the up and down shift buttons 45a and 45b are in the normal positions (in this embodiment, the position where the upper shift button 45a is directly above the lower shift button 45b is set as the normal position. It shows a state that is out of position. A method of fixing the cylinder 51 to the setting changing device 41 is a method in which a screw portion is provided at the opening 45e and the tip of the cylinder 51 and screwed in, although not shown.

  The bottom surface 51c of the cylinder 51 is provided with openings 51a and 51b. When the up / down shift button 45a or 45b is pressed, the column part 45a 'or 45b' of the up / down shift button is pushed out through the opening 51a or 51b. It has a structure. The sizes of the opening 51a and the opening 51b are such that the cylindrical portion 45a ′ of the upper shift button or the cylindrical portion 45b ′ of the lower shift button passes through each other, and therefore the size of the opening 51b is the size of the opening. The size is slightly smaller than the size of the portion 51a, and the size is such that the cylindrical portion 45a 'of the upper shift button cannot pass through the opening 51b.

  A probability change setting board 50 is provided inside the setting change device 41, the setting change key cylinder 42 is electrically connected (not shown), and the upper shift button 45a or the lower shift button 45b is in a normal position. The original upper shift button 45A and the original lower shift button 45B that are touched and pressed when pressed are provided. The structure of the original upper shift button 45A and the original lower shift button 45B is the same as that of the setting change button used in the conventional gaming machine, and detailed description thereof is omitted. When the setting key 43 is inserted into the setting change key cylinder 42 and the setting change button 45 is turned from the OFF position where the setting change button 45 cannot be operated to the ON position where it can be operated, the power switch 44 is turned ON. The board 50 is in an electrically operable state, and the winning probability can be changed by operating the setting change button 45.

  When the setting change button 45 is in the normal position and either the up / down shift button 45a or 45b is pressed, the original upper shift button 45A or the original lower shift button 45B provided on the probability change setting board 50 is changed. Can be pressed. When the setting change button 45 is rotated in the cylinder 51 provided in the opening 45e of the setting changing device 41 and is not in the proper position (FIG. 6), even if the up / down shift button 45a or 45b is pressed, Since the cylindrical portions 45a ′ and 45b ′ of the shift button cannot pass through the opening 51a or 51b provided on the bottom surface of the cylinder 51, the original upper shift button 45A provided on the probability change setting board 50 or the original The down shift button 45B cannot be pressed.

  As shown in FIG. 7, the operation of the slot machine 10 is basically controlled by a control unit 62 including a CPU (setting selection execution means) 60 and a memory 61. In addition to the CPU 60 and the memory 61, the control unit 62 is provided with an electronic lottery unit 70 and a winning combination determining unit 71, which will be described later, and are electrically connected to the probability change setting board 50 described above. The ROM area of the memory 61 stores a program for executing a game and a program for setting a winning probability, and these programs are read by the CPU 60.

  The medal sensor 63 detects a medal inserted from the medal insertion slot 21 and inputs a medal detection signal to the CPU 60. The CPU 60 counts the number of medals based on the detection signal from the medal sensor 63, and thereby determines the number of valid activated pay lines. The start signal sensor 64 inputs a game start signal to the CPU 60 when the start lever 22 is operated. In response to this, the CPU 60 rotates the first to third reels 15a to 15c. The rotation and stop control of the first to third reels 15 a to 15 c are performed by the CPU 60 and the reel drive controller 65. The stop button sensors 66a to 66c input a stop signal for each reel to the CPU 60 when the stop buttons 23 to 25 are operated. In response to this, the CPU 60 and the reel drive controller 65 perform stop control of the first to third reels 15a to 15c.

  The CPU 60 operates the electronic lottery unit 70 in response to the game start signal. The electronic lottery unit 70 includes a random number generator and a random number sampling circuit, and draws one random value every time a game is started. The random value selected by lottery is input to the winning combination determining unit 71. The winning combination determining unit 71 determines what winning combination is to be given in the currently executed game according to the input value. The CPU 60 causes the hopper device 40 to pay out a prescribed number of medals according to the determined type of winning combination, or adds the prescribed number to the credit counter.

  The winning combination determination unit 71 is provided with a plurality of lottery tables in which all random numbers generated by the random number generator of the electronic lottery unit 70 are grouped into a plurality of numerical ranges, and the winning combination is assigned to each group. ing. The first lottery table 72 includes RBs and BBs that give a right to shift to the RB mode and the BB mode in which the player is more likely to be profitable than the normal mode, a small part that pays out a predetermined number of medals, and medals The winning combination such as replay that gives the right to play the next game with the same number of bets without throwing in, and losing is assigned, and the random number sampled in the game in the normal mode belongs to which group Used for judgment. Then, the type or loss of the winning combination to be won is determined depending on which winning combination the sampled random number value belongs to.

  The first winning table 72 is provided with first to sixth lottery tables 73a to 73f associated with six-stage winning probabilities. The first to sixth lottery tables 73a to 73f are grouped into random numbers so that the winning probabilities and the winning probabilities of the above-mentioned winning combinations are different from each other. For this reason, the winning probability of the slot machine 10 changes depending on which of the first to sixth lottery tables 73a to 73f is compared with the random number sampled by the electronic lottery unit 70.

  Of the first to sixth lottery tables 73a to 73f, the first lottery table 73a has the lowest winning probability, and the winning probability is increased in the order of the second, third, fourth, fifth and sixth lottery tables. The winning probabilities for roles and losers are set. When the setting value 1 displayed on the display 46 is selected by operating the setting change button 45, the first lottery table 73a is selected. When the setting value 2 is selected, the second lottery table 73b is selected. The third lottery table 73c when the set value 4 is selected, the fourth lottery table 73d when the set value 4 is selected, the fifth lottery table 73e when the set value 5 is selected, and the sixth lottery table 73f when the set value 6 is selected. Is used.

  As shown in FIG. 8, when the operation signal of the setting change button 45 is input, the CPU 60 causes the display 46 to display the setting value selected by the setting change button 45. For example, the setting value is displayed as “−1−” when the setting value 1 is set, “−2” when the setting value 2 is set, and “−2” when the setting value 3 is set. “-3-”, “−4” when set value 4 is set, “−5” when set value 5 is set, “−6” when set value 6 is set -"Is displayed on the display 46. The setting change button 45 includes an upper shift button 45a and a lower shift button 45b, and the CPU 60 displays these indications every time the upper shift button 45a is pressed, from “−1−” to “−2”. The display of setting values is switched in the order of “−3−3” → “−4” → “−5−5” → “−6−6”, and each time the lower shift button 45b is pressed, The display of setting values is switched in the order of “−6” → “−5” → “−4” → “−3−3” → “-2-” → “−1−”.

  In response to the operation signal of the setting change button 45, the CPU 60 identifies the first to sixth lottery tables 73a to 73f corresponding to the winning probabilities selected by the setting change button 45. When the start lever 22 is pressed, the contents of the selected first to sixth lottery tables 73a to 73f are written in the RAM area of the memory 61, and the winning probability is determined. Thereby, selection of the winning probability is completed. When a game is played, the CPU 60 refers to the RAM area of the memory 61 and identifies the type of lottery table for collating the random value sampled by the electronic lottery unit 70. Then, the winning combination lottery is performed using the identified first to sixth lottery tables 73a to 73f.

  Next, the operation of the slot machine 10 configured as described above will be described. In order to change the winning probability in the slot machine 10, first, the lower door 12b is unlocked and the lower door 12b is opened. When the setting key 43 is inserted into the setting change key cylinder 42 and rotated to the ON position and the power switch 44 is turned ON, the probability change setting board 50 becomes operable and the setting change button 45 responds to this. The winning probability can be changed by the above operation. At the same time, the CPU 60 reads a program for setting the winning probability stored in the ROM area of the memory 61.

  When the up / down shift buttons 45a and 45b are rotated and are not in the proper positions when the setting change button 45 can be operated, the up / down shift buttons 45a and 45b are manually returned to the normal positions. The upper and lower shift buttons 45a and 45b do not know which is the upper shift button 45a and which is the lower shift button 45b in appearance. To return the setting change button 45 to the normal position, the setting change button 45 is once rotated to a position where the boundary line of the up / down shift button becomes horizontal. At that position, the shift button below is pressed. If the upper shift button 45a is located downward, it can be seen that the column portion 45a ′ of the upper shift button cannot pass through the opening 51b provided in the bottom surface 51c of the cylinder 51, so that the top and bottom are reversed. Therefore, the setting change button 45 can be rotated 180 ° to return to the normal position.

  FIG. 9 shows an operation flow for changing the winning probability by the setting change button 45. If it is confirmed that the setting change button 45 is in the proper position, either the up / down shift button 45a or 45b is pressed. Then, the original shift button corresponding to one of the pressed shift buttons is pressed, and the winning probability is changed. In the following description, the operation of the original shift button is omitted. When the setting key 43 is inserted into the setting change key cylinder 42 and rotated to the ON position and then the power switch 44 is turned ON, the setting value N set at that time is displayed on the display 46. In this state, for example, when the up shift button 45a is pressed, a set value that is one level higher than the set value displayed on the display unit 46 is displayed. For example, when the set value N displayed in advance is “−4−4”, the set value is changed to “−5−” and displayed on the display unit 46 by pressing the up shift button 45a. When the upper shift button 45a is subsequently pressed, the set value is changed from “−5−” to “−6−” and displayed. For example, when the lower shift button 45b is first pressed, the set value “−4−” of the display unit 46 is changed to “−3−” and the next set value is displayed. When the lower shift button 45b is subsequently pressed, the set values are changed and displayed as "-2-" and "-1-".

  By the way, in the present invention, there is provided a function stopping means for stopping the function of the other shift button that has not been pressed for a certain period when either one of the up and down shift buttons 45a or 45b is pressed. This function stop means is set in a program for executing the setting of the winning probability stored in the ROM area of the memory 61. As shown in FIG. 9, for example, when the upper shift button 45a is first pressed, a command is issued from the CPU 60, a timer is started, and a signal for stopping the function of the lower shift button 45b for a certain period is issued. Even if 45b is pressed, the set value is not changed, and measurement of a predetermined time interval is started. If the winning shift is changed by operating the up shift button 45a again, the operation can be continued. However, when the set value N becomes “−6”, the set value can be changed even if the up shift button 45a is operated. Not done. During this time, if the function of the lower shift button 45b is not restored, the set value is not changed even if the lower shift button 45b is operated. When the predetermined time has elapsed, the function of the lower shift button 45b is restored. The predetermined time interval is set as a parameter in the above program and can be changed as appropriate according to the situation.

  When the function of the lower shift button 45b is restored and the lower shift button 45b is pressed, a command is issued from the CPU 60, the function of the upper shift button 45a is stopped for a certain period, and the winning probability is changed on the display unit 46. As a result, the set value “−5-”, which is immediately below “−6-”, is displayed. When the lower shift button 45b is subsequently pressed, the winning probability is changed and can be changed until the set value N becomes “−1−”. When the set value N becomes “−1−”, the set value is not changed even if the lower shift button 45b is operated. If the function of the upshift button 45a is not restored, the operation for increasing the winning probability also does not function. To end the change of the winning probability with the selected setting value, the setting key 43 is returned to the OFF position, and the start lever 22 is pressed to confirm the setting change.

  Thus, the setting change button 45 is freely rotatable together with the support member 45c, and is operated when either the upper shift button 45a or the lower shift button 45b of the setting change button 45 is operated. The shift button that did not exist is controlled by the function stop means so that the set value cannot be changed even if it is operated until a predetermined time elapses, so a foreign object such as a piano wire is inserted from the outside of the gaming machine and the up / down shift button Even if an attempt is made to operate 45a or 45b, the correct position of the setting change button is not known, the position of the tip of the foreign object is unstable, or a foreign object comes into contact with either the up / down shift button 45a or 45b and the setting change button Since it will rotate, it is difficult to operate the same shift button continuously. It is impossible to.

  In addition, in the conventional gaming machine, the indicator on which the set value corresponding to the selected lottery table is displayed is provided at a position where it can be visually recognized from the front of the front door. In the present invention, this indicator is attached to the front door. Since the setting change key cylinder 42 and the setting change button 45 are provided on the front surface of the setting change device 41 exposed by opening, it is necessary to change the setting while confirming the setting value on the display unit 46. Therefore, it is possible to prevent an act of illegally changing the setting.

  Since the slot machine of the present embodiment has the above-described configuration, it cannot be operated even if the setting change operation unit is operated in a dark manner, and the winning probability can be prevented from being illegally changed as compared with a conventional gaming machine.

  In the above embodiment, the shape of the up / down shift button is a semicircular kamaboko-shaped column, but as two columnar shift buttons, these are housed in a common support member and are supported together with the support member or You may turn freely in a member. In other words, the upper and lower shift buttons have the same shape in appearance, and the shape of the shift button is not limited to a semicircular shape or a circular shape as long as it can be rotated together with or in the support member.

  Further, in the above embodiment, as a method for determining the normal position where the setting change of the setting change button is possible, the diameter of the column part of the up / down shift button is made large and small, and the cylinder in which the support member is stored is arranged. A similar difference in the diameter of the opening provided on the bottom surface prevents the shift button having a large diameter cylindrical portion from passing through the opening having a small diameter, and the shift button having a large diameter corresponds to the opening. We used the method of confirming the normal position by passing through, but the cylindrical part of the shift button is one cylinder and the other is a triangular prism, and the opening on the bottom of the cylinder is also the same size circle and triangle, and one opening is the other The shift button may be prevented from passing through. Alternatively, a shutter is provided outside the bottom surface of the support member, and when the setting change button is in the proper position, the shutter is open, and when the setting change button is rotated together with the support member, the shutter is not in the normal position. It is good also as a structure where is closed.

    In addition, as a function stop means for stopping the function of the other shift button that was not pressed when either one of the upper and lower shift buttons is pressed, a timer is provided to measure a predetermined time interval, The system uses a method to restore the function of the shift button that has been stopped due to the passage of time.However, if you press one of the upper and lower shift buttons for the first time, and then press the other shift button continuously, be sure to The function of the shift button may be started by holding down the shift button for a certain period of time, or function stop means for stopping all the functions of the setting change itself for a certain period.

  Also, when one of the up / down shift buttons is pressed, the other shift button that has not been pressed is pressed, so that a warning is given by means such as a buzzer or a flashing indicator light. It may be. And you may provide said function stop means and this warning means together.

  Furthermore, in the said embodiment, although the indicator which displays a setting value was provided in the housing | casing opened by opening a front door, you may provide in the back surface of a front door. That is, it cannot be visually recognized from the outside when the front door is closed, but is not limited to the inside of the housing as long as it is exposed and visible for the first time when the front door is opened.

It is a perspective view which shows the external appearance of the slot machine which implemented this invention. It is the perspective view which opened the lower door of the slot machine which implemented this invention. It is a perspective view which shows a setting change apparatus. It is a disassembled perspective view which shows the structure of a setting change button. It is the perspective view which accommodated the setting change button in the common support member. It is the disassembled perspective view which mounted | wore the setting change apparatus with the setting change button. It is a block diagram of a control system of the slot machine implementing the present invention. It is a figure which shows the setting value of a display device when an up-down shift button is operated. It is a flowchart when operating the up-and-down shift button.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Slot machine 11 Case 12 Front door 12b Lower door 41 Setting change device 42 Setting change key cylinder 45 Setting change button 45a Upper shift button 45b Lower shift button 45A Original upper shift button 45B Original lower shift button 46 Indicator 60 CPU
70 Electronic lottery part 71 Winning role determination part 72-73 Lottery table

Claims (3)

A plurality of lottery tables with different winning probabilities and a front door covering the front of the gaming machine housing are exposed to be operated and operated when one of the plurality of lottery tables is selected. A game machine in which a game is executed using the lottery table selected by the setting change operation unit.
The setting change operation unit includes an upper shift button for selecting one of the plurality of lottery tables so that a win probability is sequentially increased for each pressing operation, and a winning winning for each pressing operation. A lower shift button for selecting one of the plurality of lottery tables so that the probability decreases sequentially, and a common button support member on which these shift buttons are juxtaposed, the upper shift button and the lower A gaming machine, wherein the button support member is rotatably supported so that the position of a shift button changes.   The gaming machine according to claim 1, further comprising a function stop unit that stops the function of the other button for a predetermined time when one of the up / down shift buttons is operated. A display device for displaying a set value corresponding to the selected lottery table is provided, and the display device is provided inside the gaming machine so that it can be observed by opening the front door. The gaming machine according to 1 or 2.

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