JP5244041B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine including a liquid crystal display device that displays an effect image.

  For example, in a pachinko gaming machine that uses a game ball as a game medium, a center case having a liquid crystal display device is generally provided in a game area in which a game ball fired by a launching device rolls down. In this liquid crystal display device, various effect images are displayed according to the gaming state, and the interest of the player is improved. Here, the liquid crystal display device has a backlight disposed behind the liquid crystal display panel, and displays the image on the liquid crystal display panel by illuminating the liquid crystal display panel with illumination of the backlight. is there.

  Such a pachinko gaming machine is generally one in which a predetermined effect image is always displayed on the liquid crystal display device during the opening of the game hall. On the other hand, for the purpose of improving the lifetime of the backlight of the liquid crystal display device, a configuration has been proposed in which the backlight is turned off or dimmed when the player is not using it (for example, a patent) Reference 1).

JP 2001-79224 A

  By the way, in a game arcade where a gaming machine such as the above-mentioned pachinko machine is installed, it is normal for a player to play a game with the same gaming machine for a relatively long time, or for a player to frequently change gaming machines. is there. Therefore, even when the backlight of the liquid crystal display device is turned off or dimmed when it is not used by the player as in the conventional configuration described above, the state of being not used by the player is limited. However, there was a limit to its effect.

  The present invention is an attempt to solve the above-described problems, and proposes a gaming machine that can efficiently improve the action and effect produced by dimming the backlight of a liquid crystal display device.

  The present invention relates to a gaming machine comprising a liquid crystal display device that displays an effect image on the liquid crystal display panel by illuminating the liquid crystal display panel with a backlight, and display control means for driving and controlling the liquid crystal display device. When the display control means determines that the player is not using it by detecting the machine use detection means, the light amount of the backlight is set in advance. Control processing for adjusting according to the set low light intensity value, and control processing for adjusting the light amount of the backlight according to the set high light intensity value higher than the set low light intensity value when the start of use is detected by the machine use detection means If it is determined that the projector has been continuously used for a predetermined time based on detection by the machine use detection means, the backlight light intensity is set between the set high light intensity value and the set low light intensity value. A game machine, characterized in that it shall have a light amount adjustment process contents for executing the control process of adjusting to reduced manner.

  Here, as the machine base use detection means, in the case of a pachinko gaming machine, detection means by a touch sensor provided on a launch handle for launching a game ball, start memory data generated by winning a predetermined start opening A means for confirming the display, a means for confirming the change display of the special symbol triggered by the winning at the start opening, and the like can be suitably used. In the case of a slot machine, means for confirming the remaining number of inserted coins, button operation, and the like can be suitably used.

  In such a configuration, when the light amount of the backlight of the liquid crystal display device is low when not being used by the player, is increased when the player starts use, and then continuously used for a predetermined time. Adjust and control so as to decrease in stages. As a result, the power consumption of the backlight can be reduced when it is not being used by the player, and the amount of light from the backlight can be reduced even when the player continues to use it for a relatively long time. The power consumption can be suppressed by gradually reducing the power consumption. As described above, the present invention performs the control process for reducing the light amount of the backlight not only when not being used by the player but also when being continuously used by the player. The effect of suppressing power consumption is high, and an excellent energy saving effect is achieved. In particular, in pachinko machines and slot machines, as described above, there are many cases in which a player plays a game with a single gaming machine for a relatively long time, so that an effect of suppressing power consumption is high. obtain.

  Then, the brightness of the effect image displayed on the screen (liquid crystal display panel) of the liquid crystal display device can be gradually reduced by performing the control process for gradually reducing the amount of light of the backlight. This makes it difficult for players to understand the reduction. In addition, if the backlight is controlled so that the amount of light is suddenly reduced, the screen of the liquid crystal display device becomes dark rapidly, so that the player can clearly recognize this. There is also a risk that it may be mistaken as a disadvantageous notice display, which may reduce the interest of the game. However, in the present invention, as described above, even during a game, a reduction in the amount of light of the backlight is difficult for the player to understand, and the effect of suppressing the power consumption of the backlight while maintaining the fun of the game properly. Can be obtained. In addition, by reducing the amount of light of the backlight in steps as described above, it is possible to relieve eye fatigue caused by the player gazing at the screen of the liquid crystal display device for a relatively long time. Thereby, a player's concentration can be maintained and the interest property of a game can also be improved.

  In this configuration, as the set high light value and the set low light value, when the control process according to the set low light value is shifted to the control process according to the set high light value, the light quantity of the backlight has been drastically improved. A configuration in which the difference between the two is set to be relatively large is preferable so that the player can clearly recognize this. The set high light amount value and the set low light amount value may be set as absolute values of the light amount of the backlight, respectively, or may be set as values indicating the ratio or change amount for changing the light amount. Further, as the process of reducing the light amount step by step, the light amount may be reduced to a light amount adjusted according to the set low light amount value, or may be reduced to a predetermined light amount higher than the set low light amount value. May be. Further, as the control process that gradually decreases, the interval of each decreasing process is set to be relatively long, so that it is more difficult for the player to understand the decrease in the light amount.

  In the gaming machine described above, when the light amount adjustment processing content of the display control means determines that the player is not using the machine using detection means, the contrast of the liquid crystal display panel is set to a preset setting contrast. If it is determined that it has been used continuously for a predetermined time based on the control process that adjusts according to the reference value and the detection by the machine use detection means, the contrast of the liquid crystal display panel is stepped according to the stepwise decrease in the amount of light from the backlight. A configuration is proposed in which a control process for adjusting the height to be higher is executed.

  In such a configuration, the brightness of the screen of the liquid crystal display device accompanying the gradual decrease in the amount of light is performed by performing the process of increasing the contrast in steps so as to match the process of decreasing the amount of light of the backlight in steps. The decrease in brightness can be compensated by increasing the contrast, so that the apparent decrease in brightness is suppressed on the screen of the liquid crystal display device. Therefore, it is possible to make it harder for the player to understand the brightness reduction of the screen of the liquid crystal display device when the process of reducing the amount of light of the backlight stepwise is performed.

  Here, in this configuration, after the adjustment process for increasing the contrast stepwise, when the player is not used, the contrast is adjusted and controlled according to the set contrast reference value. Then, when the player starts using, the adjustment control may be performed so as to maintain the contrast according to the set contrast reference value, or the adjustment control may be performed so as to increase or decrease the contrast. Note that the set contrast reference value may be set as an absolute value of contrast, or may be set as a value indicating a ratio or a change amount for changing the contrast.

  In the gaming machine described above, a light amount adjustment volume for adjusting the light amount of the backlight of the liquid crystal display device by remote control is provided, and the display control means adjusts the light amount of the backlight according to the operation of the light amount adjustment volume. A control process for reducing the contrast and increasing the contrast of the liquid crystal display panel according to the decrease in the light quantity, or a control process for increasing the light quantity of the backlight and reducing the contrast of the liquid crystal display panel according to the improvement in the light quantity. A configuration is proposed that includes the contents of remote adjustment processing to be performed.

  Here, since the light amount adjustment volume is disposed so as to be remotely operated, the player cannot normally operate it, but is operated by the game hall side. For this reason, the amusement hall side can change the amount of light of the backlight by operating this light amount adjustment volume based on its own judgment. Therefore, by reducing the amount of light, the power consumption of the backlight can be suppressed to save energy. Can be appropriately executed. Since the adjustment control is performed so as to improve the contrast in accordance with the control for reducing the light amount of the backlight, it is possible to suppress an apparent brightness change on the screen of the liquid crystal display device. Thereby, even if the light amount adjustment volume is operated, the brightness of the screen of the liquid crystal display device does not change apparently, and it is difficult for the player to understand that the control process is executed by the light amount adjustment volume operation. Therefore, even if the light amount adjustment volume is operated during the game, the player can proceed with the game without noticing it, and the interest of the game can be maintained.

  As described above, the gaming machine of the present invention adjusts the amount of light of the backlight according to the set low light amount value when the player is not using it by detection of the machine base use detecting means, and the machine base use detecting means. When the start of use is detected, the light amount of the backlight is adjusted according to the set high light amount value. When it is determined that the backlight is continuously used for a predetermined time, a control process is performed to adjust the light amount of the backlight in a stepwise manner. Because it is so, it is possible to suppress the power consumption of the backlight when not used by the player, and to suppress the power consumption of the backlight even when used for a relatively long time, An excellent energy saving effect can be obtained. In particular, in the case where a game continues for a relatively long time, such as a pachinko game machine or a slot machine, the above-described energy saving effect can be further enhanced. In addition, during the game, the amount of light from the backlight is reduced stepwise, so that the eyestrain caused by the player gazing at the screen of the liquid crystal display device for a relatively long time. The feeling can be alleviated and it is difficult for the player to understand the decrease in the amount of light from the backlight, so that the interest of the game can be kept appropriate.

  In the above-described gaming machine, when it is determined that the machine base use detecting means is continuously used for a predetermined time, the contrast of the liquid crystal display panel is increased stepwise in accordance with the stepwise decrease in the amount of light of the backlight. Since the control process for adjusting the brightness of the liquid crystal display device can be compensated by increasing the contrast of the screen brightness of the liquid crystal display device due to the stepwise decrease in the amount of light. On the screen, a decrease in apparent brightness is suppressed, and the effect of maintaining the above-mentioned game interest is further improved.

  In the above-described gaming machine, by remotely operating the light amount adjustment volume, the control for reducing the light amount of the backlight and improving the contrast according to the light amount reduction, and improving the light amount of the backlight and contrast according to the light amount improvement. In the case of a configuration in which the control is performed to reduce the light amount, the light amount of the backlight can be adjusted by operating the light amount adjustment volume on the game hall side, so that the light amount of the backlight is reduced. By performing the operation, energy saving can be appropriately performed. In addition, since the contrast is adjusted in accordance with the backlight light amount adjustment, the apparent brightness of the liquid crystal display panel can be maintained, so that the player's emotions are accompanied by the backlight light amount adjustment by the game hall side. Can be suppressed, and the interest of the game can be properly maintained.

1 is a perspective view of a pachinko gaming machine 1. FIG. 1 is a front view of a game board 10 provided in a pachinko gaming machine 1. FIG. It is a block diagram which shows the control circuit which controls a game. It is a flowchart which shows a light quantity adjustment process. It is a flowchart which shows a remote adjustment process.

Embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in FIG. 1, the pachinko gaming machine 1 includes an outer frame 2 fixed to a game island facility (not shown) and a gaming machine main body 3 that covers a front opening of the outer frame 2. The gaming machine main body 3 includes a front frame 5 in which a game board 10 (see FIG. 2) is attached to a substantially circular opening at the upper center, and one side edge of the front frame 5 is connected to the outer frame via the hinge member 4. It is pivotally attached to 2 so that it can be opened and closed. Further, the front frame 5 is provided with a glass plate 6 that covers the game board 10. In addition, an upper tray 7 and a lower tray 8 are vertically arranged at the lower portion of the front frame 5, and a launching handle 9 is projected on the right side of the lower tray 8.

  FIG. 2 is a front view of the game board 10 described above. A substantially circular game area 12 is defined by a guide rail 11 on the front surface of the game board 10, and a center case 13 incorporating various game members is disposed in the center of the game area 12. A liquid crystal display device 14 is assembled to the center case 13. The liquid crystal display device 14 displays various effect images on its screen (liquid crystal display panel 41).

  Note that special symbols A, B, and C are also displayed on the screen of the liquid crystal display device 14. The special symbols A, B, and C start to fluctuate when a game ball flows into a starting port 22 of the variable prize winning device 21, which will be described later, and then stop and hit or lose according to a stop symbol pattern consisting of a combination of each special symbol. Confirm. When the winning stop symbol pattern is confirmed and displayed, a special game operation for opening and closing a special prize opening 26 described later is executed a predetermined number of times, and a lot of prize balls are obtained by winning the game balls in the special prize opening 26. be able to. Since this special game operation can obtain a large amount of prize balls, a special symbol A, B, C hit stop pattern mode leading to the execution of the special game operation is most desired by the player.

  Under the center case 13, a special start memory number display device 17 and a normal start memory number display device 18 each comprising four LEDs are provided. The special start memory number display device 17 stores the number of special symbol start memories that are generated each time the game ball flows into the start port 22 when game balls continuously flow into the start port 22 of the variable prize device 21 described later ( Hereinafter, the special symbol starting memory number) is displayed by the number of lighting of the LED. Further, the normal start memory number display device 18 displays the number of normal symbol start memories that change a normal symbol (not shown), which will be described later (hereinafter referred to as a normal symbol start memory number), according to the number of lighting LEDs. . Here, the number of special symbol starting memories and the number of ordinary symbol starting memories are set to four as upper limit numbers, respectively.

  Normal symbol start gates 19, 19 are arranged on the left and right sides of the center case 13, and a normal symbol start switch S2 provided on each normal symbol start gate 19 by the passing of a game ball (see FIG. 3). When a game ball detection signal is generated from (), a normal symbol (not shown) fluctuates on the display screen of the liquid crystal display device 14, and stops after a predetermined time, and various symbol patterns are displayed.

  Also, below the center case 13, a variable winning device 21 having a start port 22 through which game balls can flow and a pair of left and right opening / closing wing pieces (not shown) is disposed. A special symbol start switch S1 (see FIG. 3) for detecting a game ball is disposed inside the start port 22. According to the detection of the game ball by the special symbol start switch S1, a liquid crystal display is provided as described above. The special symbols A, B, C are started to change on the screen of the device 14. Also, the pair of left and right open / close wing pieces are raised in a vertical direction so that a single game ball can be won from above, and the game ball is expanded in an inverted C shape from both sides to the left and right sides. It is converted and driven to a tilting position that makes it easy to win. When the display result of the normal symbol (not shown) is a predetermined hit symbol, the opening / closing blade piece tilts for a predetermined time (about 0.2 seconds) with the normal electric accessory solenoid (not shown) as the drive source. The game ball is easily expanded into the start port 22 by being expanded to the position.

  Further, a special electric accessory 25 having a large winning opening 26 is disposed below the variable winning device 21. The special electric accessory 25 has a horizontally long rectangular opening / closing piece 27, and the opening / closing piece 27 is controlled to be opened / closed by a built-in large winning opening solenoid (not shown), so that the big winning opening 26 is opened or closed. Is converted to When the special symbols A, B, and C variably displayed on the screen of the liquid crystal display device 14 are fixedly displayed in a predetermined hit stop pattern mode (in the case of a big win), the special electric accessory 25 is a big prize opening. The special game operation is executed by opening and closing the 26. In the special game operation, the opening / closing piece 27 is tilted forward and opened, and in the opened state, the game ball is guided into the big winning opening 26 through the guiding action on the upper surface of the opening / closing piece 27 and a predetermined opening time (for example, 30 seconds), or a predetermined number (for example, 9) of game balls during the predetermined opening time, the open / close piece 27 stands and the grand prize opening 26 is closed. (In the embodiment, 15 times), a large amount of game balls are won in the big prize opening 26, and a predetermined profit is provided to the player. A count switch S3 (see FIG. 3) for detecting a winning game ball is provided inside the special electric accessory 25.

  In addition, the game area 12 is provided with a plurality of general winning ports 58, and a predetermined number of prizes are awarded in accordance with the winning detection of the game ball by the general winning switch S4 (see FIG. 3) provided therein. The ball is paid out.

  Further, as shown in FIG. 1, the firing handle 9 is provided so as to protrude forward from the lower portion of the front frame 5, and a base member (not shown) fixed to the front frame 5, the base An operation unit 31 is provided on the front side of the member so as to be rotatable, and a hemispherical handle cover 32 is provided on the front side of the operation unit 31. Here, the operation part 31 is provided with three protrusions 31a protruding on the outer periphery thereof, and can be easily rotated by the protrusions 31a. A rotation angle detection sensor 33 (see FIG. 3) that detects and outputs a rotation angle from the steady angle position of the operation unit 31 is disposed inside the firing handle 9. According to the rotation angle detected by the detection sensor 33, the game ball is launched into the game area 12 by a launching device (not shown). Further, a touch sensor 34 (see FIG. 3) for detecting that the player's hand touches the handle cover 32 is also disposed inside the launching handle 9. If the hand is not detected, even if the operation unit 31 is rotated from the normal angle position, this is invalidated and the game ball is not fired.

Next, the control circuit of the pachinko gaming machine 1 described above will be described with reference to the block diagram shown in FIG.
The control circuit includes a main control board 80, a payout control board 81, an effect control board 82, a power supply board 83, and a launch control board 84. The main control board 80 is constituted by a microcomputer and controls the game of the pachinko gaming machine 1 in an integrated manner. Various switches and sensors such as the special symbol start switch S1, the normal symbol start switch S2, and the count switch S3 are connected to the main control board 80 via a panel surface relay terminal plate 90.

  The main control board 80 includes a central control unit CPU that executes arithmetic processing according to input signals from various switches and sensors and outputs predetermined command signals, a storage device ROM that stores control programs used for arithmetic processing, and the like. A storage device RAM that can read and write various data at any time is connected via an address bus (not shown) that unilaterally transmits information for designating an address for reading and writing data, and a data bus (not shown) that exchanges data Thus, a substrate circuit of the main control board 80 is configured. In the storage device ROM, a control program, a normal hit random number table, a normal hit symbol random number table, a big hit random number table, a big hit symbol random number table, a lost symbol random number table, a reach random number table, a reach symbol random number table, a reach aspect random number table, etc. Fixed data is stored. Then, as will be described later, when the game ball flows into the start port 22 and the special symbol start switch S1 is turned on, the central control unit CPU draws random numbers in each random number table, and the big hit random number value and the big hit symbol disorder A numerical value, a lost symbol random value, a reach random number value, a reach symbol random value, a reach mode random value, etc. are selected. The storage RAM also has a storage area for temporarily storing the number of ON operations of the special symbol start switch S1 and the normal symbol start switch S2, etc., a register area constituting the soft timer, a work area, and the like. .

  Further, the board circuit of the main control board 80 is provided with a clock device (not shown) that outputs a predetermined clock pulse, and is connected to the central control unit CPU. The central control unit CPU performs arithmetic processing in time series by using clock pulses at regular intervals, and sequentially executes a series of processing operations. In addition, a timer TM that counts clock pulses output by the clock device and measures time is also connected.

  Further, the board circuit of the main control board 80 is provided with an input port (not shown) and an output port (not shown) through which the central control unit CPU performs data communication with peripheral devices, via the output port. Command signals from the main control board 80 are transmitted to the input ports of the payout control board 81, the effect control board 82, and the launch control board 84. A special symbol start switch S1, a normal symbol start switch S2, a count switch S3, a general winning switch S4, a light quantity adjustment volume 50, which will be described later, and the like are provided at the input port of the main control board 80 via a panel surface relay terminal plate 90. It is connected. The main control board 80 checks the detection states of these switches and sensors at predetermined time intervals (for example, every 2 ms), and when there is a signal input, the signal is waveform-shaped by the waveform shaping circuit and the central control unit CPU And the information is stored in the storage device RAM. The output port of the main control board 80 is connected to a large winning opening solenoid and a normal electric accessory solenoid via a panel relay terminal board 90, and operates when the central controller CPU selects a predetermined condition. Is done.

  The central control unit CPU of the main control board 80 and each central control unit CPU installed on each of the control boards 81 to 84 described above are arithmetic units in which arithmetic units (ALUs) for processing predetermined data are coupled. And a register for storing data to be input / output to / from the arithmetic unit and a read instruction, a decoder for decoding the instruction, and the like. Note that the arithmetic processing capability of each central control unit CPU is determined by the number of coupled arithmetic units. Then, the central control unit CPU of the main control board 80 transmits a command signal generated in a predetermined format to each of the control boards 81 to 84, and the central control unit CPU of each of the control boards 81 to 84 determines in accordance with this command signal. This control is executed.

  On the other hand, the above-described effect control board 82 performs drive control of the liquid crystal display device 14 described above, control for generating sound from various speakers, control for emitting various lamps and LEDs, and the like. The effect control board 82 is connected to the liquid crystal display device 14, a lamp control board 86 for controlling the light emission of various LEDs via the LED relay terminal board, and an effect relay terminal board 87 to which a speaker is connected. Has been. Here, the liquid crystal display device 14 includes a backlight 42 for illuminating the liquid crystal display panel 41 from behind, and the backlight 42 is connected via the lamp control board 86. The backlight 42 is in this embodiment, and a white LED is used. The effect control board 82 also includes a central control device CPU, a storage device ROM, and a storage device RAM, similarly to the main control board 80 described above. Such an effect control board 82 controls and executes the display of the effect image by the liquid crystal display device 14, the light emission of each LED, and the sound generation of the speaker in accordance with the effect command signal received from the main control board 80. The process for controlling the liquid crystal display device 14 is related to the main part of the present invention and will be described in detail later.

  The payout control board 81 controls the driving of a ball payout device (not shown) for paying out award balls and rental balls. The payout control board 81 drives the above-described ball payout device (not shown) in accordance with the payout command signal received from the main control board 80, and executes control for paying out predetermined prize balls.

  The launch control board 84 controls the launch of a game ball by driving and controlling a launch device (not shown) according to the operation of the launch handle 9 described above. The launch angle detection sensor 33 and the touch sensor 34 described above. Is connected. The launcher is driven and controlled in accordance with the rotation angle signal input from the rotation angle detection sensor 33. Furthermore, it is confirmed by the input signal from the touch sensor 34 that the player is operating the firing handle 9. The launch control board 84 is also connected to the main control board 80 described above, and when a predetermined command signal is input from the main control board 80, drive control is performed accordingly. Furthermore, in the present embodiment, when a signal indicating the operation of the firing handle 9 is input from the touch sensor 34, this is output to the main control board 80. Thereby, the main control board 80 confirms whether or not the firing handle 9 is being operated.

  The power supply board 83 described above converts the power supplied from the external power source into a predetermined voltage, and the main control board 80, the payout control board 81, the effect control board 82 (and the lamp control board 86) described above, The power is transmitted to the launch control board 84. The power supply board 83 is supplied with AC 24V current from an external power source. Circuits for converting the AC24V into DC32V, DC12V, and DC5V are provided. In addition, an overload protection circuit, a reset circuit, a backup capacitor (backup power supply) and the like that prevent excessive current from flowing are provided.

  The main control board 80, the payout control board 81, the effect control board 82 (and the lamp control board 86), and the launch control board 84, each of which is supplied with DC32V, DC12V, and DC6V power from the power supply board 83, are respectively driven and controlled. A predetermined electric power is distributed to a motor, a solenoid, a switch, a sensor, an LED, a speaker, a display device, and the like.

Next, the control mode by the control circuit shown in FIG. 3 will be described according to the operation of the pachinko gaming machine 1.
When the above-described launching handle 9 is operated by a player, a game ball is launched into the game area 12 by driving and controlling a launching device (not shown) according to the rotation angle of the operation unit 31. When the game ball passes through the normal symbol start gate 19 and the normal symbol start switch S2 is turned ON, the main control board 80 selects the normal hit random number value and the normal hit random number value as the normal symbol start process. Furthermore, a control process for changing the normal symbol (not shown) by the liquid crystal display device 14 is performed by the effect control board 82, and the normal symbol is fixedly stopped according to the selected normal random number value and the normal random symbol value. I do. Here, when the normal symbol hits and is fixedly stopped in the symbol form, control is performed to expand the opening / closing wing piece (not shown) of the variable winning device 21 to the tilting position. When the game ball passes through the normal symbol start gate 19 continuously, each random number is selected for each passage and temporarily stored in the storage device RAM as the normal symbol start memory. According to the stored number, the LED of the normal starting stored number display device 18 is turned on. And when the normal symbol start memory | storage is memorize | stored, it digests in the order of the generation | occurrence | production, and the control process which fluctuates and stops a normal symbol as mentioned above is performed.

  When the game ball rolling down in the game area 12 flows into the start port 22 of the variable prize device 21, the special symbol start switch S1 is turned ON, and the main control board 80 extracts each random number value described above and the special symbol. A start port process for storing the start memory is performed. Here, the central control unit CPU of the main control board 80 is operated by turning on the special symbol start switch S1, and the big hit random number table, the big hit symbol random number table, the lost symbol random number table, the reach random number table stored in the storage device ROM, A jackpot random number value, a jackpot symbol random number value, and the like are extracted from the reach symbol random number table, the reach mode random number table, and the like by lottery. Then, in response to a command signal from the main control board 80, the effect control board 82 drives and controls the liquid crystal display device 14 to change the special symbols A, B, and C, and the special control according to each random number selected by the lottery described above. A control process for stopping and displaying symbols A, B, and C is executed. Here, if the big hit random number value is a hit, the big hit symbol random number value is selected and the winning symbol is determined, and the hit symbol variation pattern to be displayed on the screen of the liquid crystal display device 14 is selected according to the other random number values. The control board 82 displays a series of symbol generation processes until the special symbol A, B, C is hit and fixedly stopped in the stop symbol form on the liquid crystal display device 14. Then, when the special symbols A, B, and C are confirmed and stopped in the symbol mode, as described above, an open / close round that opens and closes the special winning opening 26 is started as a special game operation. On the other hand, if the big hit random number is lost, the lost symbol random value is selected to determine the lost symbol, and the lost symbol variation pattern is selected according to the other random number values. , C are displayed in a series of symbol generation processes until the symbol is stopped in a manner of losing symbol pattern.

  When the game ball continuously flows into the start port 22, each time the special symbol start switch S1 is turned ON, each random number value such as the big hit random number is selected and used as the special symbol start memory. The data is stored and held in the storage device RAM in the order of occurrence, and the LEDs of the special start memory number display device 17 are sequentially turned on according to the start memory number. Since the number of memory of this special symbol start memory is set to a maximum of four, even if a game ball flows into the start port 22 in a state where four special symbol start memories are stored, No special symbol start memory is generated. When the special symbol start memory is stored and held, it is digested in the order of generation and the symbol generation process described above is executed. In addition, the LED of the special start memory number display device 17 is turned off according to the digestion of the special symbol start memory.

Next, the main part of the present invention will be described.
The liquid crystal display device 14 disposed in the center case 13 includes a liquid crystal display panel 41, a backlight 42, a drive circuit 43, a power supply circuit 44, and the like (see FIG. 3). Here, the liquid crystal display panel 41 has a general structure including a polarizing filter, a transparent electrode, a liquid crystal, an alignment film, a color filter, and the like. The power supply circuit 44 controls the light emission of the backlight 42 and the drive circuit 43 applies a voltage to the transparent electrode to control the liquid crystal to be aligned in a predetermined direction according to the alignment film. Is displayed. As a control process for displaying an image with such a liquid crystal display device 14, a conventionally used control method can be applied, and the details thereof are omitted.

  The effect control board 82 drives and controls the drive circuit 43 in accordance with a command signal from the main control board 80 and drives the power supply circuit 44 via the lamp control board 86 to drive the liquid crystal display device 14 described above. Control (see FIG. 4). That is, the effect control board 82 selects effect image data set and stored in advance according to the command signal input from the main control board 80, and drives and controls the drive circuit 43 according to the effect image data. Control to apply a voltage to the transparent electrode of the liquid crystal display panel 41 is performed. Furthermore, the effect control board 82 performs control to supply power to the backlight 42 according to a predetermined pulse width by drivingly controlling the power supply circuit 44 via the lamp control board 86. Thus, by executing the power supply control to the backlight 42 and the drive control of the liquid crystal display panel 41, a desired effect image is displayed on the liquid crystal display panel 41.

  In the present embodiment, the effect control board 82 performs drive control of the power supply circuit 44 of the liquid crystal display device 14 to perform a control process (see FIG. 4) for adjusting the light quantity of the backlight 42. This control processing program and data are provided. As this control process, the amount of power of the backlight 42 is adjusted by controlling the amount of power supplied to the backlight 42. This power supply amount is used by the player and a set high power supply amount that is set to a high power supply amount so that the player can clearly display the effect image with a brightness that can be visually recognized during the game. In order to suppress power consumption in a state where the power is not supplied, a set low power supply amount in which the amount of power to be supplied is set low is set in advance. That is, when the power supply circuit 44 is driven and controlled in accordance with the set low power supply amount, the amount of power supplied to the backlight 42 is small and the amount of light is also reduced, so the screen of the liquid crystal display device 14 (the liquid crystal display panel 41). ) Is displayed with a relatively dark brightness. On the other hand, when the power supply circuit 44 is driven and controlled in accordance with the set high power supply amount, the amount of power supplied to the backlight 42 is large, so that the amount of light is also increased. Therefore, the brightness displayed on the screen of the liquid crystal display device 14 is increased. Is bright enough. As the set high power supply amount and the set low power supply amount set as the power supply amount, the power supply amount difference between them is set relatively large, and the power circuit 44 sets the set high power supply amount from the set low power supply amount. When switching to the supply amount, the screen of the liquid crystal display device 14 is made to brighten rapidly, and this change in brightness is made clear to the player.

  Further, as a control process for increasing or decreasing the amount of light of the backlight 42, the power supply amount of the backlight 42 is reduced by 10% triggered by the establishment of a predetermined condition, and thereafter every time a preset reduction processing time elapses. A control process (see FIG. 4) for adjusting the power supply amount so as to decrease by 10% is performed. As will be described later, the power supply circuit 44 repeatedly performs control to reduce the power supply amount by 10% from the state where the power supply amount is controlled according to the set high power supply amount described above. The amount of light from the backlight 42 is gradually reduced by 10%. And even if the light quantity of the backlight 42 is reduced stepwise in this way, the light quantity reduction for each time is relatively small at 10%. Therefore, the brightness of the screen of the liquid crystal display device 14 is reduced with this light quantity reduction. However, it is difficult for the player to understand this decrease in brightness. Furthermore, by setting the reduction processing time to a relatively long time, it can be made more difficult to understand that the brightness of the screen of the liquid crystal display device 14 gradually decreases.

  Here, the process of reducing the power supply amount by 10% is performed in the present embodiment at a maximum of 10 times, and is maintained at the power supply amount after the 10th execution. Here, the power supply amount after 10 executions is a value that is reduced by about 65% compared to the power supply amount controlled by the set high power supply amount, and is controlled by the set low power supply amount. It is higher than the power supply. That is, the process of gradually reducing the light amount of the backlight 42 is executed between the set high power supply amount and the set low power supply amount. Further, the reduction processing time, which is the interval for performing the power supply amount reduction processing, is set in advance as a predetermined constant time in this embodiment so that the reduction processing is periodically executed. Furthermore, in this embodiment, it is confirmed that a predetermined continuous use time has elapsed since the player started using the control process for reducing the power supply amount in stages. As a condition, it is executed. As a specific example, the continuous use time is set as 30 minutes, and the reduction processing time is set as 15 minutes.

  In this embodiment, the effect control board 82 includes a control processing program and data for adjusting the contrast of the liquid crystal display panel 41 by controlling the drive circuit 43 to drive. Here, as drive control of the drive circuit 43, contrast is adjusted by controlling voltage application to a transparent electrode (not shown) of the liquid crystal display panel 41. As a contrast control process (see FIG. 4), a set contrast reference value is set in advance as a reference for controlling the voltage application to the transparent electrode, and the drive circuit 43 is driven and controlled according to the set contrast reference value. The contrast of the liquid crystal display panel 41 is maintained at a predetermined reference level. Furthermore, in this embodiment, a control process (see FIG. 4) for adjusting the contrast so as to increase stepwise is executed. This control process is executed in synchronization with the above-described control process for gradually reducing the amount of power supplied to the backlight 42. That is, the process is executed on the condition that the above-described continuous use time has elapsed since the start of use by the player, and a process for increasing the contrast in accordance with a decrease in the amount of power supplied to the backlight 42 is performed. Similarly, every time elapses, a process for increasing the contrast is performed. The process of increasing the contrast stepwise is executed 10 times in the same manner as the process of decreasing the power supply amount to the backlight 42 stepwise. Further, in the process of adjusting to improve the contrast, the brightness of the screen of the liquid crystal display device 14 is reduced (darkened) by reducing the amount of power supplied to the backlight 42 by 10%. The contrast adjustment control is set so that it is as difficult to understand as possible. As a result, even if the amount of power supplied to the backlight 42 is reduced each time the above-described continuous use time and the subsequent reduction processing time elapse, the change in the brightness of the screen of the liquid crystal display device 14 appears apparently. It ’s harder for players to understand.

  Even when the control process for increasing or decreasing the amount of light of the backlight 42 or the process for adjusting the contrast is performed as described above, a predetermined effect image is displayed on the screen of the liquid crystal display device 14 (the liquid crystal display panel 41 according to the gaming state). ). Therefore, when not used by the player, a predetermined effect image is displayed on the relatively dark screen of the liquid crystal display device 14.

  On the other hand, the above-described main control board 80 performs use determination processing for determining whether or not the pachinko gaming machine 1 is used by a player. As this use determination process (see FIG. 4), in this embodiment, the presence / absence of an input signal from the touch sensor 34 of the firing handle 9 and the presence / absence of storage of the special symbol start memory and the normal symbol start memory are stored. The determination processing is set based on whether or not the symbol generation process is executed in the liquid crystal display device 14. More specifically, it is confirmed whether or not the player is operating the firing handle 9 based on an input signal from the touch sensor 34 of the firing handle 9, and if not, the storage device of the main control board 80 is stored. It is confirmed whether or not undigested special symbol start memory or normal symbol start memory is stored in the RAM. Further, if there is no undigested start memory, it is confirmed on the liquid crystal display device 14 whether or not the symbol generation process is being executed. If the symbol generation process is not executed as a result of sequentially performing the three stages of confirmation processing, a preset unused time is set and measurement of the unused time is started. When this non-use time elapses, it is determined that the pachinko gaming machine 1 is not used by the player. As described above, in this embodiment, when the player does not operate the firing handle 9, there is no unknown start memory, and the symbol generation process is not executed, the unused time is digested for a limited time. Thus, processing for determining that the player is not using the player is performed. Further, in this use determination process, when the player's operation is confirmed by an input signal from the touch sensor 34 of the firing handle 9 in a state where the player is not using, it is determined that the player has started to use. In this embodiment, the non-use time is set as 5 minutes.

  If it is determined that the player is not using the above-described use determination process, a command signal is output from the main control board 80 to the effect control board 82, and the effect control board 82 drives and controls the power supply circuit 44 for setting. Control is performed so that the power supply amount is supplied in accordance with the low power supply amount, and the light amount of the backlight 42 is adjusted. At the same time, the drive circuit 43 is driven to adjust the contrast according to the set contrast reference value. When such a control process is executed from a state in which the player is in use, the amount of light of the backlight 42 decreases, and the screen brightness of the liquid crystal display device 14 becomes dark. On the other hand, when it is determined that the input has been started by obtaining an input signal from the touch sensor 34 of the launch handle 9 in a state of not being used, the effect control board 82 uses the power supply circuit 44 to change the power supply amount according to the set high power supply amount. Control to adjust is performed (see FIG. 4). As a result, the amount of light of the backlight 42 is increased, and the screen of the liquid crystal display device 14 is rapidly brightened. Here, in the drive circuit 43, the control process for adjusting the contrast according to the set contrast reference value is continuously executed.

  In this embodiment, a light amount adjustment volume 50 (see FIG. 3) for remotely operating the drive circuit 43 and the power supply circuit 44 of the liquid crystal display device 14 of the pachinko gaming machine 1 is provided. The light amount adjustment volume 50 is installed at a location away from the main body of the pachinko gaming machine 1 and is managed by the game hall so that the player cannot easily operate it. The light quantity adjustment volume 50 is connected to the panel surface relay terminal plate 90 by wiring for transmitting an adjustment signal generated by the operation, and the adjustment signal is transmitted to the main control board 80 via the panel surface relay terminal plate 90. To input. Here, the light amount adjustment volume 50 of the present embodiment is a dial type that can be rotated, and can be rotated up to 90 degrees from the preset reference position to the left and right. The rotation angle with respect to the reference position is output as the adjustment signal. When a rotation operation is performed to the left of the reference position, a negative rotation angle is output as an adjustment signal. When a rotation operation is performed to the right of the reference position, a positive rotation angle is output as an adjustment signal.

  When the adjustment signal is input from the light amount adjustment volume 50, the main control board 80 controls the effect of a command signal for adjusting and controlling the light amount and contrast of the backlight 42 of the liquid crystal display device 14 in accordance with the adjustment signal. Output to the substrate 82. Here, as the adjustment control (see FIG. 5) between the light amount and the contrast of the backlight 42, the power supply amount and the contrast to the backlight 42 at that time and the rotation angle of the light amount adjustment volume 50 (the reference position described above) are used. Is performed according to the rotation angle). As this correction processing, at the maximum rotation angle (90 degrees) to the left and right of the light amount adjustment volume 50, the power supply amount to the backlight 42 is increased or decreased by 30%, and the contrast is changed in accordance with this increase or decrease. A correction process is performed according to the rotation angle. The correction processing corrects the set high power supply amount, the set low power supply amount, and the set contrast reference value according to the rotation angle. Here, the correction of the power supply amount and the correction of the contrast are performed so that the plus and minus directions are opposite to each other. For example, when the light amount adjustment volume 50 is rotated 30 degrees to the left side, the power supply circuit 44 adjusts the power supply amount so as to be reduced by 10% (corresponding to 1/3 of the maximum rotation angle). In accordance with the reduction in the supply amount, the drive circuit 43 is driven and controlled to increase the contrast (see FIGS. 4 and 5). Then, the set high power supply amount and the set low power supply amount are corrected to values that are reduced by 10%, and accordingly, the set contrast reference value is corrected to be increased. In addition, when it is rotated to the right, the correction is made so that plus / minus is reversed.

  Further, in the state where the light amount adjustment volume 50 is rotated and maintained at a predetermined rotation angle, as described above, the power supply amount and contrast to the backlight 42 are corrected according to the rotation angle, and the set high power supply is performed. The corrected value of the amount, the set low power supply amount, and the set contrast reference value is maintained (see FIG. 5). Therefore, even when the pachinko gaming machine 1 is not being used by the player or when the player has started using the corrected state, the control process is executed according to the corrected set values. Note that the control process for gradually reducing the power supply amount to the backlight 42 is a process for reducing the power supply amount by 10%, and after correction according to the rotation angle, A process of reducing the power supply amount by 10% is performed. The same applies to the control processing for increasing the contrast stepwise.

  In the present embodiment, the main control board 80 and the effect control board 82 constitute display control means according to the present invention. In addition, the machine base usage detecting means for detecting whether or not the player is using the machine is configured by the touch sensor 34 and the main control board 80 for performing the usage determination process. Then, according to the determination of the use determination process, the power supply amount to the backlight 42 is adjusted in the non-use state and the start of use, and the power supply circuit 44 is driven and controlled so as to decrease the power supply amount step by step. The process of driving and controlling the drive circuit 43 in order to adjust the contrast according to the power supply amount is the light amount adjustment process content (see FIG. 4) according to the present invention. Further, the processing for correcting the power supply amount and the contrast to the backlight 42 according to the operation of the light amount adjustment volume 50 is the contents of the remote adjustment processing according to the present invention (see FIGS. 4 and 5). The set low power supply amount described above is preset in order to drive and control the power supply circuit 44 according to this and adjust the light amount of the backlight 42, and is set to the set low light amount value according to the present invention. It is equivalent. Similarly, the set high power supply amount described above corresponds to the set high light amount value according to the present invention.

  Next, a flow of control processing for changing the light amount and contrast of the backlight 42 of the liquid crystal display device 14 will be described. This control process is executed by the light quantity adjustment process of FIG. 4 and the remote adjustment process of FIG. 5 incorporated in a main process (not shown) that is continuously executed at predetermined time intervals. Yes.

  For example, when the pachinko gaming machine 1 according to the present embodiment is not used by a player, the liquid crystal display device 14 supplies power to the backlight 42 according to the set low power supply amount by the light amount adjustment processing of FIG. The amount is controlled so that the amount of light of the backlight 42 is adjusted, and the contrast of the liquid crystal display panel 41 is adjusted according to the set contrast reference value. Thereby, in the liquid crystal display device 14 of the pachinko gaming machine 1, the screen is relatively dark, and a predetermined effect image is displayed on the screen in the brightness state. It is assumed that the above light quantity adjustment volume 50 is maintained at the reference position.

  When the player starts playing a game with the pachinko gaming machine 1, when the player touches the launch handle 9, the main control board 80 obtains an input signal detected by the touch sensor 34 of the launch handle 9, and the effect control board 82. A command signal is output to Then, as shown in FIG. 4, the effect control board 82 controls the power supply amount to the backlight 42 according to the set high power supply amount to adjust the light amount of the backlight 42. Thereby, the screen of the liquid crystal display device 14 becomes bright. Further, the main control board 80 starts time digestion of the continuous use time. Here, the contrast is controlled and maintained according to the set contrast reference value described above.

  When the game by the player is continuously executed and the above-described continuous use time elapses, the effect control board 82 executes a process of reducing the power supply amount to the backlight 42 by 10%. That is, power is supplied to the backlight 42 according to the power supply amount that is 10% lower than the set high power supply amount. In synchronization with this process, a process for improving the contrast is performed in accordance with the reduction of the power supply amount. Furthermore, time digestion of the reduction treatment time is started. Thereafter, when the reduction processing time elapses, processing for reducing the power supply amount to the backlight 42 by 10% and processing for improving the contrast are performed again. Then, the time digestion of the reduction processing time is started again. As described above, the process of reducing the power supply amount and the process of improving the contrast are repeated every time the reduction process time elapses, and intermittently executed up to 10 times. Thus, by reducing the power supply amount to the backlight 42 in stages, the power consumption amount to the backlight 42 can be gradually reduced. Since the contrast is improved as the light quantity of the backlight 42 is reduced, it is difficult for the player to understand the brightness reduction of the liquid crystal display device 14. Since the amount of light of the backlight 42 is substantially reduced by the process of reducing the power supply amount to the backlight 42 in a stepwise manner as described above, an effect of relieving the player's eye feeling of fatigue can be achieved.

  In this embodiment, when the above-described process for reducing the power supply amount to the backlight 42 is repeated 10 times, this reduction process is terminated and the subsequent power supply amount and contrast are maintained. I have to.

  In addition, if the player releases his hand from the launch handle 9 while playing a game, the touch sensor 34 does not detect the input signal indicating detection. When the input signal is stopped in this way, the main control board 80 checks whether or not an undigested special symbol start memory or normal symbol start memory is stored in the storage device RAM. Further, it is checked whether or not the symbol generation process is being executed on the liquid crystal display device 14. If there is an undigested start-up memory or the symbol generation process is being executed, it is determined that the game is continuing, and the above-described processing during the game is maintained. On the other hand, if there is no undigested start-up memory and the symbol generation process has not been executed, time digestion of a preset non-use time is started, and when the non-use time elapses, it is not used by the player Is determined. When this determination is obtained, the power supply amount to the backlight 42 is processed according to the set low power supply amount, and the contrast is processed according to the set contrast reference value. Thereby, the liquid crystal display device 14 is in a state in which the screen is relatively darkened, and a predetermined effect image is displayed on the screen in the brightness state. When it is determined that the player is not using the power supply to the backlight 42 in a stepwise manner as described above, if the player determines that the power is not being used by the player, the number of times of the reduction processing is less than 10 and the processing ends. Reset the count.

  Furthermore, when the attendant of the game hall reduces the light amount of the backlight 42 of the liquid crystal display device 14 in consideration of the environment and energy saving, the light amount adjustment volume 50 is rotated from the reference position to the left side. . When the light amount adjustment volume 50 is turned, a control process for adjusting the power supply amount and the contrast to the backlight 42 is performed according to the remote adjustment process of FIG. Here, if the light amount adjustment volume 50 is rotated 45 degrees to the left from the reference position, the power supply amount is corrected to be reduced by 15% according to the rotation angle, and the power supply amount is reduced. The power supply circuit 44 and the drive circuit 43 are driven and controlled according to these corrections (see FIG. 4). Even when the light amount adjustment volume 50 is operated, the screen brightness of the liquid crystal display device 14 is apparently difficult to understand. Therefore, the power supply amount of the backlight 42 can be reduced without making the player notice the brightness change. Can be reduced. Since the power supply amount of the backlight 42 is corrected according to the previous rotation angle (in this case, 45 degrees to the left) until the light quantity adjustment volume 50 is rotated next time, The stepwise lowering process is adjusted and controlled based on the corrected state. Similarly, the set low power supply amount and the set high power supply amount are adjusted based on the corrected state. A similar adjustment control process is performed for contrast.

  As described above, the pachinko gaming machine 1 according to the present embodiment brightens the screen of the liquid crystal display device 14 when the game is started, and changes the brightness of the screen when the game continues for a predetermined time (continuous use time). Is reduced. When the game is not being executed, the screen of the liquid crystal display device 14 is made darker than when the game is being executed. By controlling the amount of power supplied to the backlight 42 of the liquid crystal display device 14 in this way, the power consumption is suppressed when the game is not being performed, and the power consumption is also suppressed when the game is being continued. To be able to. Thereby, the pachinko gaming machine 1 according to the present embodiment exhibits excellent energy saving. Further, by reducing the amount of power supplied to the backlight 42 when the game has continued for a relatively long time, it is possible to alleviate the feeling of fatigue that occurs in the eyes of the player watching the liquid crystal display device 14. Since the process for improving the contrast is executed in synchronization with the stepwise reduction process of the power supply amount, it is difficult for the player to understand the brightness change beyond the apparent screen of the liquid crystal display device 14. doing. Thereby, since the effect image displayed on the liquid crystal display device 14 can be continuously viewed without a sense of incongruity, the effects of reducing power consumption and reducing the player's fatigue can be achieved while maintaining the interest of the game.

  In the liquid crystal display device 14, the power consumption required for the backlight 42 occupies much of the driving power of the liquid crystal display device 14, and the effect of reducing this is high. In particular, the power consumption is reduced not only in a state where a game is not being performed but also in a state where the game is being continuously executed, and thus the contribution to the energy saving effect is extremely high.

  Further, by rotating the light amount adjustment volume 50, the game hall side can appropriately adjust the light amount of the backlight 42, so that the power consumption of the backlight 42 can be suppressed by an independent judgment on the game hall side. It is also possible to save energy. Even when the light amount of the backlight 42 is reduced by the light amount adjustment volume 50, the liquid amount display is performed in the same manner as in the case of the change in the brightness class because the control is performed to improve the contrast. Since the brightness change on the panel 41 is apparently difficult to understand, the same effects can be obtained.

  In the above-described embodiment, when the game is continuously executed, the processing is repeatedly executed up to 10 times as a process of gradually reducing the power supply amount to the backlight 42. This reduction process can be set in various ways. For example, the maximum number of repetitions can be set less than 10 times, or can be set more than 10 times. Further, it may be controlled to repeatedly decrease to the set low power supply amount. Furthermore, as a single reduction process, the reduction rate may be set to another fixed value of 10%, or the reduction rate may be changed so as to decrease stepwise by 5 to 20%. It is also possible to set the decrease rate to increase or decrease every time. Here, in addition to setting the reduction rate as the reduction process, the amount of reduction can also be set, and it can be set as a fixed value or a variation value in the same manner as the reduction rate. Also, the time interval for performing stepwise reduction processing (decrease processing time) can be set as appropriate, and the time intervals may be set to increase or decrease in order.

  Further, in the above-described embodiment, the machine use detection that detects whether or not the player is playing a game by the process of determining the touch sensor of the firing handle, the number of unstarted starting memories, and the symbol generation process However, as another configuration, a sensor for detecting a player on a chair arranged in front of the machine base may be provided as the machine base use detection means. In this case, when the player is detected by the sensor, it is determined that the game is started.

  Moreover, although the Example mentioned above is the structure provided with the light quantity adjustment volume 50 for every pachinko game machine 1, it can also be set as the structure provided with the light quantity adjustment volume which controls a several pachinko game machine simultaneously.

  In this invention, it is not limited to the Example mentioned above, About another structure, it can change suitably within the range of the meaning of this invention.

1 Pachinko machine (game machine)
14 Liquid crystal display device 34 Touch sensor (Machine use detection means)
41 Liquid crystal display panel 42 Backlight 50 Light quantity adjustment volume 80 Main control board (display control means)
82 Production control board (display control means)

Claims (2)

In a gaming machine comprising a liquid crystal display device that displays an effect image on the liquid crystal display panel by illuminating the liquid crystal display panel with a backlight, and display control means for driving and controlling the liquid crystal display device.
While equipped with a machine base use detecting means for detecting whether or not the player is in use,
The display control means
When it is determined that the player is not using the machine using detection means, a control process for adjusting the amount of light of the backlight according to a preset low light value,
When detecting the start of use by the machine use detection means, a control process for adjusting the light amount of the backlight according to a set high light amount value that is higher than the set low light amount value;
A control process that adjusts the light amount of the backlight so as to decrease stepwise between the set high light value and the set low light value when it is continuously used for a predetermined time by the detection of the machine use detection means. for example Bei the light intensity adjustment processing what you want to do,
Furthermore, it is equipped with a light amount adjustment volume for adjusting the light amount of the backlight of the liquid crystal display device by remote control,
In accordance with the operation of the light amount adjustment volume, the display control means reduces the light amount of the backlight and increases the contrast of the liquid crystal display panel according to the light amount decrease, or increases the light amount of the backlight and improves the light amount. A remote control processing content for performing any one of the control processing for reducing the contrast of the liquid crystal display panel in response to the content is provided . The amount of light adjustment processing of the display control means is as follows:
When it is determined that the player is not using the machine using detection means, a control process for adjusting the contrast of the liquid crystal display panel according to a preset contrast reference value,
Control that adjusts the contrast of the liquid crystal display panel to be increased step by step according to the stepwise decrease in the amount of light from the backlight when it is determined that the device has been continuously used for a predetermined time by the detection of the machine base detection means. The gaming machine according to claim 1, wherein the gaming machine is configured to execute processing.

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