Gaming machine

Abstract

To provide gaming machines that can reduce costs. [Solution] The circuit board unit installed on the circuit board base is sealed to the circuit board base by a sealing member installed on the circuit board base, and it is possible to open it by destroying the sealing member. The gaming machine can be partially modified by changing a part of the circuit board set while maintaining the installation state of the back box. When a partial modification is made, the circuit board unit is the target of modification, the sealing member is the target of modification, and the circuit board base is not the target of modification. The sealing member, which is the target of modification, can be destroyed without using a prescribed tool, and no trace of destruction is left on the circuit board base, which is not the target of modification.

Description

【Technical Field】 【0001】 The present invention relates to a gaming machine. 【Background Art】 【0002】 As a gaming machine, a slot machine equipped with a plurality of reels having a plurality of symbols arranged on the outer peripheral surface, a start lever, a stop button, etc. is known. In the slot machine, when the rotation of the reels is started based on a game start operation, an internal lottery using a lottery table is performed. When the reels stop, a symbol combination corresponding to the winning combination selected in the internal lottery is displayed. When the winning combination wins, as a process corresponding to the winning combination, for example, a medal payout process for paying out medals (game values) or a replay process for enabling a replay without newly consuming medals is performed. 【0003】 Among such gaming machines, there is one configured such that when the substrate case is illegally removed from the support plate, a trace remains (see, for example, Patent Document 1). 【Prior Art Documents】 【Patent Documents】 【0004】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2021-133007 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0005】 By the way, in gaming machines, cost reduction is required. 【0006】 The present invention has been made in view of the above circumstances, and an object thereof is to provide a gaming machine capable of reducing costs. 【Means for Solving the Problems】 【0007】 In order to achieve the above object, the gaming machine according to the present invention is It comprises a back box (for example, a casing 11), a front door (for example, a front door 12), and a circuit board set (for example, a circuit board set 310), The aforementioned substrate set comprises a substrate base (e.g., substrate base 350), a substrate unit (e.g., first substrate unit 320), and a sealing member (e.g., sealing member 340), The aforementioned substrate unit comprises a substrate and a substrate case for housing the substrate, The substrate unit installed on the substrate base is sealed to the substrate base by the sealing member installed on the substrate base, and can be opened by breaking the sealing member. The aforementioned gaming machine is capable of partial model changes, which involve modifying a portion of the circuit board set while maintaining the installation state of the back box. When the aforementioned partial model change is made, the circuit board unit is subject to change, the sealing member is subject to change, and the circuit board base is not subject to change. The sealing member to be modified can be destroyed without using a predetermined tool. No traces of the damage remain on the substrate base that is not subject to modification. 【0008】 In the aforementioned partial model change, the circuit board unit and the sealing member are changed, but the circuit board base does not need to be changed. In other words, the partial model change can be performed without changing the circuit board base. Therefore, the number of parts that need to be changed when performing the partial model change can be reduced. This reduces costs. Furthermore, the sealing member can be broken and the circuit board unit opened without using a specific tool (e.g., wire cutters). This improves work efficiency. Furthermore, even if the sealing member is destroyed, no traces of the destruction remain on the circuit board base. This prevents the gaming machine from being deemed defective or counterfeit based on the presence of such traces. [Effects of the Invention] 【0009】 According to the present invention, costs can be reduced. [Brief explanation of the drawing] 【0010】 [Figure 1] This is a perspective view from the front, showing an example of a gaming machine according to an embodiment of the present invention. [Figure 2] This is a perspective view showing the internal configuration of the enclosure. [Figure 3] This is a view of the gaming machine and its dedicated unit from the front. [Figure 4] This is a perspective view of the reel unit from the front. [Figure 5] This is a perspective view of a conventional slot machine's reel unit, seen from the front. [Figure 6] This diagram illustrates the crimping of the main body of the circuit board unit in a conventional gaming machine. [Figure 7] This is a perspective view of a circuit board set for a gaming machine according to an embodiment of the present invention, viewed from the front. [Figure 8] This is a view of the circuit board base from the front. [Figure 9] The same is a perspective view showing the substrate base, where (a) is a view from the front right upper diagonal, and (b) is a view from the front right lower diagonal. [Figure 10] This is a view of the circuit board base from the front left and slightly below. [Figure 11] This is a view of the first and second circuit board units from the rear. [Figure 12] The same is a perspective view showing the first substrate unit and the second substrate unit, where (a) is a view from the rear right upper diagonal, and (b) is a view from the rear right lower diagonal. [Figure 13] The same is a perspective view showing the sealing member, where (a) is a view from the front right upper diagonal and (b) is a view from the rear left upper diagonal. [Figure 14] The same diagram illustrates the fitting of the sealing member and the substrate base, where (a) shows the fitting portion of the substrate base and (b) shows the claw portion of the sealing member. [Figure 15]It is a diagram for explaining the procedure of removing the sealing member. [Figure 16] It is a diagram for explaining the procedure of removing the substrate unit from the substrate base and attaching the substrate unit to the substrate base. [Figure 17] It is a diagram for explaining the procedure of removing the sealing member. [Figure 18] It is a diagram for explaining the procedure of removing the substrate unit from the substrate base and attaching the substrate unit to the substrate base. [Figure 19] It is a diagram for explaining the seal. (a) shows the seal for managing the first substrate unit, and (b) shows the seal attached to the sealing member. 【Mode for Carrying Out the Invention】 【0011】 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The gaming machine of this embodiment is a gaming machine 10 in which game value as electronic information is used instead of game medals (medals) as gaming media, and the game is played by consuming or granting game value. The gaming machine 10 (FIG. 1) is a so-called smart pachislo (registered trademark). Different from a conventional slot machine that inserts physical medals when playing a game and pays out physical medals by winning a combination, the gaming machine 10 uses game value as electronic information without using physical medals, and is a gaming machine (medal-less gaming machine) in which game value is consumed or granted by the game. Note that the game value in the medal-less gaming machine corresponds to the medal, which is the game value in the conventional slot machine, and since the game value in the medal-less gaming machine can be regarded as a virtual medal (electronified medal), the game value in this embodiment may be referred to as a medal (game medal). Also, hereinafter, the number of game values is regarded as the number of virtual medals, and the number of game values may be indicated as "~ pieces" or "~ units". 【0012】 In the following explanation, "front and back" generally means that when the player is in front of the gaming machine 10, the player's side is "front" and the gaming machine side is "back." "Up and down" means that the top surface of the gaming machine is "up" and the bottom surface is "down." "Left and right" means that the left hand side of the player playing the gaming machine is "left" and the right hand side is "right." Furthermore, terms such as "parallel," "perpendicular," "identical," and "right angle," as well as values ​​of length and angle, used in this specification to specify shapes, geometric conditions, and their degrees, shall not be bound by strict meanings, but shall be interpreted to include a range that allows for the expectation of similar functionality. 【0013】 Figure 1 is a perspective view of the gaming machine 10 as seen from the front. As shown in Figure 1, the gaming machine 10 of this embodiment comprises a box-shaped housing 11 with an open front side facing the player, and a front door 12 that opens and closes the front opening of the housing 11. The front door 12 is rotatably connected via a hinge and opens and closes the opening of the housing 11. The front door 12 is divided into an upper door 12a and a lower door 12b, and these upper door 12a and lower door 12b can be opened and closed relative to the housing 11. The front door 12 may also be a single, integrated structure that is not divided into an upper door 12a and a lower door 12b. 【0014】 The enclosure 11 is formed in a box shape with an open front (having a front opening). The enclosure 11 comprises a top plate 2, a back plate 3, a bottom plate 4, and left and right side plates 5 and 6. The left side plate 5 is referred to as the left side plate 5, and the right side plate 6 is referred to as the right side plate 6. In this embodiment, the top plate 2, back plate 3, bottom plate 4, left side plate 5, and right side plate 6 are made of resin. However, at least some of the plates may be made of a material other than resin (such as metal or wood). 【0015】 In this embodiment, the inner surfaces of the top plate 2, back plate 3, bottom plate 4, left side plate 5, and right side plate 6 that face inward from the housing 11 are referred to as "inner surfaces." The bottom surface of the top plate 2, the front surface of the back plate 3, the top surface of the bottom plate 4, the right side of the left side plate 5, and the left side of the right side plate 6 are "inner surfaces." Also in this embodiment, the outer surfaces of the top plate 2, back plate 3, bottom plate 4, left side plate 5, and right side plate 6 that face outward from the housing 11 are referred to as "outer surfaces." The top surface of the top plate 2, the back surface of the back plate 3, the bottom surface of the bottom plate 4, the left side of the left side plate 5, and the right side of the right side plate 6 are "outer surfaces." 【0016】 A liquid crystal display 13 (display means) is provided approximately in the center of the upper door 12a as a performance device. The liquid crystal display 13 displays various images (performance images) to assist or enhance the game. A speaker 14 (sound output means) is provided on the lower door 12b as a performance device. The speaker 14 outputs various performance sounds (music, sound effects, voices, etc.) to assist or enhance the game. A lamp 38 (lighting device, lighting means, outer perimeter lamp) is provided on the front door 12 for notification and performance purposes. In addition, movable parts that can be operated by actuators, etc., may be provided as performance devices. 【0017】 Furthermore, a display window 16 is provided on the upper door 12a. Behind the display window 16 (the first display area 13a, described later), the reel unit is positioned so that a portion of it can be seen through the display window 16. Each reel 20a to 20c has its outer surface divided into 20 sections (20 areas) at regular intervals, and one of several types of symbols is placed in each section. In other words, multiple types of symbols are arranged in a row on the outer surface of each reel 20a to 20c. When each reel 20a to 20c stops, three symbols per reel (upper, middle, and lower) are displayed through the display window 16. The display window 16 is also provided with upper, middle, and lower sections as display positions for viewing the symbols of each reel 20a to 20c, and the number of active lines is set by the combination of the display positions of each reel 20a to 20c. In this embodiment, the effective line is composed of the upper section of the first reel 20a, the middle section of the second reel 20b, and the lower section of the third reel 20c. 【0018】 In this embodiment, the number of game values ​​required for one game (specified number, specified number of tokens) is set to 3, and when the specified number of game values ​​is inserted, the active lines are activated. As the game starts, each reel 20a to 20c starts to rotate and an internal lottery is performed to determine whether one of the winning combinations is won or lost (not won). Next, when the reels 20a to 20c stop, if the symbol combination corresponding to the winning combination determined by the internal lottery is displayed on the active line, this winning combination is awarded, and the processing corresponding to the awarded winning combination (award processing) is performed. In other words, whether or not a winning combination has been awarded is indicated by the symbol combination displayed through the display window 16 when the reels 20a to 20c stop. The active lines can be said to be lines for determining whether a winning combination has been awarded. 【0019】 The liquid crystal display 13 is positioned in front of the reel unit, which is equipped with reels 20a to 20c. The liquid crystal display 13 can perform effects by displaying predetermined displays (display objects) on its display surface. Display objects refer to things like people, animals, vehicles, buildings, natural objects (e.g., rocks, trees, etc.), characters, backgrounds, patterns, designs, and other things (images) that are displayed on the liquid crystal display 13. The liquid crystal display 13 has a display area that is outside the reels (second display area 13b), which is a display area that does not overlap with the reels 20a to 20c when viewed from the front, and a display area in front of the reels (first display area 13a), which overlaps with the reels 20a to 20c when viewed from the front. The second display area 13b is formed to surround the first display area 13a. The liquid crystal display 13 is a transmissive liquid crystal display, and is designed to make components behind the first display area 13a (transparent area) visible. The first display area 13a has multiple states, including a transparent state and a state in which a display object (animation image) is displayed (transparent display state). When the first display area 13a is transparent, the patterns on the reels 20a to 20c are visible. When the first display area 13a is in the state in which a display object is displayed, the animation image is displayed in front of the reels 20a to 20c. In the state in which the first display area 13a is in the state in which a display object is displayed, there may be a state in which the patterns on the reels 20a to 20c are visible (easily visible) and a state in which they are not visible (difficult to see). Thus, the first display area 13a is an area in which the patterns on the reels 20a to 20c are visible and an animation image can be displayed. In Figure 1, the first display area 13a (display window 16) is shown as three divided regions, but it is not limited to this and may be a single horizontally elongated rectangular region. 【0020】 The second display area 13b is the portion of the liquid crystal display 13's display area excluding the first display area 13a. The second display area 13b can display images for special effects. It is also possible to display a single, cohesive image spanning both the second display area 13b and the first display area 13a. The second display area 13b is not transparent and cannot be used to allow visibility of components behind it. The liquid crystal display 13 does not have to be a transmissive liquid crystal display, and the reels 20a to 20c do not necessarily have to be visible through the liquid crystal display 13 (first display area 13a). In other words, the display window 16 may be made of a transparent panel (which cannot display any objects), and the reels 20a to 20c may be visible through that display window 16. 【0021】 Although not shown in Figure 1, a game information display unit is provided below the display window 16. The game information display unit consists of LEDs, lamps, a 7-segment display, etc., and displays various game information such as the number of game values ​​paid out in a single game and error information. The game information display unit includes a first main display, a second main display, and a sub-display. The game information display unit may also include a favorable section display. 【0022】 The lower door 12b (operation panel) is equipped with a bet button 23 operated when betting (inserting) game value, a start lever 24 (game start operation means) operated when starting the game, a stop button 26 (stop operation means) (stop buttons 26a, 26b, 26c) operated when stopping the rotating reels, and an effect button 25 (effect operation means) operated when advancing the effects, etc. The bet button 23 may also include a MAX bet button (first bet button) operated when betting 3 (predetermined number) game value and a 1 bet button (second bet button) operated when betting 1 game value. 【0023】 The performance button 25 (performance operation means) is operated when advancing the performance (changing the manner of the performance), etc. The performance button 25 is formed to be pressable, and when pressed, the manner of the performance image displayed on the liquid crystal display 13 changes, for example. By providing the performance button 25 and enabling its operation at predetermined triggers, it is possible to increase the player's sense of participation in the game and improve the enjoyment of the game. For example, the performance button 25 becomes operational when a performance is being executed that makes the player expect to transition to a favorable state, and an image instructing the operation (PUSH image) is displayed on the liquid crystal display 13 (PUSH performance). When the performance button 25 is operated, the result of the game (for example, whether or not a favorable state is transitioned) is announced. Note that the performance button 25 is not limited to the shape of a button, but may also be in the shape of a lever, etc., as long as it is configured to be able to detect the player's operation. 【0024】 Furthermore, a door key cylinder 69 is provided on the lower door 12b. The lower door 12b (front door 12) can be unlocked by inserting a door key into the door key cylinder 69. Specifically, the lower door 12b can be unlocked by rotating (twisting) the door key inserted into the door key cylinder 69 clockwise from its initial position. Alternatively, an error can be cleared by rotating (twisting) the door key inserted into the door key cylinder 69 counterclockwise from its initial position. 【0025】 Furthermore, a lower panel 91 is provided on the lower door 12b. A light source (LED) for illumination is provided on the back side of the lower panel 91, and the lower panel 91 is illuminated from behind by the light emitted from this light source. 【0026】 As shown in Figure 2, a reel unit 31 is provided inside the housing 11. The reel unit 31 includes three reels 20a, 20b, and 20c displaying multiple patterns around their periphery, a drive motor (stepping motor) for rotating the reels 20a to 20c, and index sensors provided corresponding to the reels 20a to 20c. Each reel is fixed to the output shaft of the respective stepping motor. The stepping motors are four-phase stepping motors. Each stepping motor comprises a rotor and a stator having coils for the first phase, second phase, third phase, and fourth phase. Each stepping motor is excited by 1-2 phase excitation, which alternates between supplying a 1-phase excitation pulse to turn on one coil and supplying a 2-phase excitation pulse to turn on one coil and the other adjacent coils. Each step update of the excitation pulse results in a displacement of half a step angle (1 step angle for every 2 steps update), and 504 steps update (252 step angle displacement) completes one rotation of each reel 20a-20c. The stepping motor has a step angle of approximately 1.43° and an interrupt time t for updating the excitation pulse by one step of 1.49 ms. In addition, each index sensor detects the edge of a semicircular index attached to the inside of each reel 20a-20c. Based on the detection information from these index sensors, control is performed for the rotation and stopping of the reels 20a-20c. 【0027】 A power supply unit 32, which houses a power supply device (power supply means) for supplying power to each component, is provided on the upper surface of the bottom plate 4 inside the housing 11. The power supply unit 32 is a roughly rectangular box shape and is located inside the housing 1 (placed on the bottom plate 4). The power supply unit 32 is equipped with a power switch, and when the power switch is turned ON (on state), power is supplied from the power supply unit 32 to each component. Note that some components may be supplied with power even when the power supply unit 32 is OFF (disconnected state). A power connector (not shown) provided on the back of the power supply unit 32 is connected to a power cable (power harness) that connects to an outlet supplying commercial power (AC100V). Specifically, a connector provided at one end of the power harness is connected to the power connector, and a plug provided at the other end of the power harness is connected to the outlet. The power supply board of the power supply unit 32 creates a DC power supply (e.g., 5V, 12V, 24V, etc.) from the power sent from outside the gaming machine via the power harness and supplies power to each component of the gaming machine. 【0028】 As shown in Figure 3, a dedicated unit 200 (specific unit, game value lending device) is provided on the side (right side) of the gaming machine 10 as a device for lending game value (capable of performing control related to the lending of game value). The gaming machine 10 and the dedicated unit 200 are connected via a harness and are able to communicate with each other. The front of the dedicated unit 200 is provided with a banknote slot 201 into which banknotes can be inserted, a card insertion / extraction slot 202 into which cards (game value management media) can be inserted / extracted, a lending button 203 (lending operation means), a replay button 204 (lending operation means), and a card return button 205, etc. The card is used to manage the number of game value owned by the player. In other words, the number of game value owned by the player can be ascertained by the card. The card may also be capable of storing a prepaid balance. Furthermore, the management of the number of game values ​​using cards may be carried out by storing the number of game values ​​on the card itself, or by storing the number of game values ​​in a designated management device installed in the gaming hall, etc., and linking the number of game values ​​stored in the management device, etc. with the identification information stored on the card (such as the player's ID or the unique identification number for each card). 【0029】 In the dedicated unit 200, an operation (press operation) on the lending button 203 is accepted as a lending operation (game value transfer operation) that transfers game value to the gaming machine 10. When the lending button 203 is pressed, the stored value, etc., that is stored as a prepaid balance in the banknotes or cards inserted into the banknote slot 201 is consumed, and a predetermined number (for example, 50) of game value is credited to the gaming machine 10. In addition, in the dedicated unit 200, an operation (press operation) on the replay button 204 is accepted as a lending operation (game value transfer operation) that transfers game value to the gaming machine 10. When the replay button 204 is pressed, the game value owned by the player, which is managed by the card (game value linked to the card), is consumed, and a predetermined number (for example, 50) of game value is credited to the gaming machine 10. In other words, in this embodiment, an operation on the loan button 203 or the replay button 204, which are loan operation means, is accepted as a loan operation (game value transfer operation), and based on the loan operation, a predetermined number of game values ​​are transferred (loaned) from the dedicated unit 200 to the game machine 10. 【0030】 As shown in Figure 1, the lower door 12b is equipped with a game token count display device 211 (game value count display device, game value indicator) and a counting button 212. The game token count display device 211 and the counting button 212 are located on the side (right side) of the lower door 12b. Based on the lending operation in the dedicated unit 200, the gaming machine 10 sets a value equivalent to a predetermined number of game values ​​as credits. The number of credits (the number of game tokens usable for gameplay) is displayed on the game token count display device 211. The game token count display device 211 has a 5-digit (or 6-digit) 7-segment display, and the number of credits is displayed on this 7-segment display. In the gaming machine 10, the upper limit of the number of credits may be set, for example, within the range of values ​​that can be displayed on the game token count display device 211. In the gaming machine 10, when the bet button 23 is operated while game values ​​are stored as credits, the stored game values ​​are set to the input state up to a predetermined limit. 【0031】 Conventional slot machines are equipped with a coin slot, a tray, a hopper unit, a cash box, etc., but the gaming machine of this embodiment does not have these. 【0032】 The gaming machine 10 is equipped with various circuit boards, including a main control board (main control means) that controls the progress of the game, a sub-control board (sub-control means) that controls the effects according to the progress of the game, and a game value control board (game value control means, medal count control board) that controls the number of game values. In other words, the main control board, sub-control board, game value control board, etc. are installed inside the casing 11. 【0033】 The main control board receives input signals from input means such as the bet button 23, start lever 24, and stop button 26, performs various calculations to execute the game, and controls output means such as the reel unit 31 based on the calculation results. The main control board is also equipped with a setting change key cylinder and setting change buttons. Note that the setting change key cylinder and setting change buttons may be provided in components other than the main control board (for example, the power supply unit 32). 【0034】 The setting change key cylinder (setting key switch) has two states: OFF and ON. In other words, it is possible to switch between the OFF and ON states. The setting change key cylinder is designed to accept a setting key. The setting change key cylinder is initially in the OFF state. When the inserted setting key is rotated 90 degrees clockwise from its initial position, the state of the setting change key cylinder switches from OFF to ON. When the setting key is rotated 90 degrees counterclockwise from the position where the setting change key cylinder is ON back to its initial position, it switches from ON to OFF. The setting change button can also be pressed. 【0035】 The sub-control board receives signals (information) sent from the main control board and input signals from input means such as the performance button 25, performs various calculations to execute the performance, and controls various performance devices such as the liquid crystal display 13 and speaker 14 based on the calculation results. 【0036】 The main control board and the sub-control board are electrically connected, allowing the main control board to transmit various information (signals), such as information indicating the game status, to the sub-control board. However, the sub-control board cannot transmit information to the main control board. The functions of each board, such as the main control board and the sub-control board, are realized by hardware such as various processors (CPU, DSP, etc.), ICs, or information storage media such as ROM and RAM, and software consisting of predetermined programs pre-stored in ROM, etc. 【0037】 The game value control board (game value control means) controls the number of game values ​​(credits) stored in the game value memory area. Based on the occurrence of a predetermined role (minor role) and the awarding of a predetermined number of game values, the game value control means increases the number of credits by that predetermined number. Furthermore, when an operation to insert game values ​​(operation of the bet button 23) is performed at the start of the game, the game value control means decreases the number of credits by the amount of game values ​​inserted. At this time, the game medal display device 211 displays a value obtained by subtracting the number of bets from the number of held medals (credits). 【0038】 The game value control means controls the reception of game value transferred from the dedicated unit 200 to the game machine 10. When game value is transferred from the dedicated unit 200 to the game machine 10, the game value control means increases the number of credits by the amount of game value being transferred. The game value control means also controls the transfer of game value from the game machine 10 to the dedicated unit 200. When game value is transferred from the game machine 10 to the dedicated unit 200, the game value control means decreases the number of credits by the amount of game value being transferred. The game value control means also displays the number of game values ​​stored as credits (number of credits) on the game medal display device 211 and changes the display content of the game medal display device 211 according to the increase or decrease in the number of credits. 【0039】 The counting button 212 is operated when sending (returning, transferring) information (credits) indicating a value equivalent to a predetermined number of credits (all or part of the number of credits) to the dedicated unit 200. The counting button 212 is equipped with a press part (operation part), and the press part is formed to be pressable. Based on the operation (press operation) of the counting button 212 as a counting operation (return operation), such as when the player finishes playing, it is possible to transfer the credited game value from the game machine 10 to the dedicated unit 200. Then, after the game value has been transferred to the dedicated unit 200, when the card return button 205 (Figure 3) is operated (press operation) a card that allows the player to know the number of game values ​​they possess is ejected from the dedicated unit 200 (card insertion / discharge port 202). 【0040】 Based on the lending operation in the dedicated unit 200, a predetermined number of game value (game tokens) is assigned to the game machine 10 (credits are added). Next, when the bet button 23 is operated, the game value is set to the input state up to a predetermined limit, and a value equivalent to the number of game value (game tokens) set to the input state is subtracted from the credits. In other words, the number of game value displayed on the game token display device 211 decreases. 【0041】 The main control board and the game value control board are electrically connected and capable of bidirectional communication. The game value control board may be integrally formed with the main control board. 【0042】 In the gaming machine of this embodiment, when a predetermined number of game values ​​are set to the input state, the start lever 24 becomes operational, that is, it becomes possible to start playing. Next, when the game start operation is performed on the activated start lever 24, the rotation of each reel 20a to 20c begins. Next, when the rotation speed of the reels increases to a predetermined speed and enters a steady rotation state, the stop buttons 26a to 26c become operational. Next, when the activated stop buttons 26a to 26c are operated, the rotation of the corresponding reel stops. Next, when the rotation of all reels 20a to 20c stops, depending on the result of the game, a process is performed to add a predetermined number of game values ​​(add to credits), or a process is performed to make it possible to start playing again without consuming new game values ​​(replay process), and one game (1 play) ends. Also, when the counting button 212 is operated, a predetermined number of credits (game tokens) are sent (returned) to the dedicated unit 200. Then, when the card return operation is performed in the dedicated unit 200, the card with the predetermined information stored on it is ejected from the dedicated unit 200. 【0043】 Furthermore, if a predetermined button is operated (pressed) while the game value in the gaming machine 10 is set to the bet state, the bet value may be returned to the credits. In other words, a predetermined button may be provided that is operated when the game value that has been bet (set to the bet state) is returned to the credits by the operation of the bet button 23. Based on the operation of the predetermined button, a process (bet return process) is executed to return the game value set to the bet state to the credits. The bet return process is a process in which the setting of the game value to the bet state is canceled, and a value equivalent to the number of game values ​​that was set to the bet state is added to the number of credits. If a predetermined button is operated while there is game value set to the bet state, the game value is returned to the credits based on that, and the number of game tokens displayed on the game token display device 211 increases. 【0044】 In the gaming machine of this embodiment, the reel unit 300 shown in Figure 4 is detachably attached to the inside of the housing 11. The reel unit 300 comprises a frame 301 (main frame), and various parts are supported (fixed) to the frame 301, forming a unit. One of the parts supported by the frame 301 is the circuit board set 310. 【0045】 Here, we will describe the reel unit used in conventional gaming machines. Figure 5 shows a conventional reel unit 900. The reel unit 900 includes a circuit board set 910. The circuit board set 910 consists of a circuit board unit (main control circuit board unit), a sealing member (crimping member), a plate-shaped circuit board base (main control circuit board base), etc. The circuit board unit (circuit board module, circuit board assembly) consists of a circuit board (main control circuit board) and a circuit board case for housing the circuit board (for example, a transparent ABS resin case). The circuit board unit is mounted on the circuit board base. The circuit board base is located behind the circuit board. The "circuit board" housed in the circuit board case consists of a plate-shaped circuit board body (board) on which electronic components are mounted. 【0046】 Figure 6(a) shows the upper left of the circuit board set 910 when viewed from the front. The circuit board unit is fastened with crimping screws B1 and crimped to the main body side (to the housing 11 side). In this embodiment, "the circuit board unit is crimped to the main body side (to the housing 11 side)" (the circuit board unit is sealed to the circuit board base) means that the circuit board unit is fixed to the circuit board base and cannot be removed (opened) without destroying a predetermined component. In this embodiment, the act of crimping (sealing) the circuit board unit to the main body side (circuit board base) is called "main body crimping". The first crimping to the main body side is called "B crimping". 【0047】 After the main body is crimped (B crimp), the circuit board unit may be removed from the circuit board base (opened) for inspection or other purposes. In conventional gaming machines, when removing the circuit board unit from the circuit board base, it was necessary to cut (destroy) three points around the tightening point of the crimping screw B1 with a designated tool (such as wire cutters) as shown in Figure 6(b). As a result, in conventional gaming machines, the sealing material and the circuit board base were destroyed when opened, leaving traces (marks of destruction) on the main body (circuit board base). 【0048】 After inspecting the circuit board unit, the main body can be crimped again. In other words, the main body can be crimped twice. The second crimping to the main body is called "C crimping". Figure 6(c) shows the lower left of the circuit board set 910 when viewed from the front. C crimping is a sealing method similar to B crimping, but is performed in a different location (lower left) than B crimping. 【0049】 By the way, when new gaming machines are developed, they replace the ones installed in the market (gaming parlors). This replacement can be called a model change. There are two types of model changes for gaming machines: a complete model change, which involves changing (replacing) the entire gaming machine, and a partial model change, which involves changing (replacing) a part of the gaming machine (some parts) while maintaining the installation state of the cabinet 11 (back box). A partial model change can be described as a model change in which at least a part of the circuit board set is replaced and many parts are reused. 【0050】 In conventional gaming machines, when performing a partial model change and replacing the circuit board unit (main control circuit board unit), the work shown in Figure 6(b) (work using tools) was performed, which resulted in the circuit board base being damaged (damage marks remaining on the circuit board base). Therefore, it was necessary to replace the circuit board base when performing a partial model change. 【0051】 As will be described in detail later, the gaming machine of this embodiment can reduce the number of parts that need to be changed when performing a partial model change. Furthermore, the gaming machine of this embodiment can be partially modified without using any special tools (such as wire cutters or screwdrivers). In addition, the gaming machine of this embodiment can be partially modified without leaving any traces on the main body (on the circuit board base). The configuration of this embodiment will be described in detail below. 【0052】 Figure 7 is a perspective view of the substrate set 310 according to this embodiment, viewed from the front. The substrate set 310 comprises a first substrate unit 320, a second substrate unit 330, a sealing member 340 (crimping member), a substrate base 350, and the like. The substrate base 350 is formed in a plate shape and is positioned on the rear side (rear side), and is capable of supporting (attaching) the first substrate unit 320, the second substrate unit 330, and the sealing member 340. 【0053】 The first circuit board unit 320 consists of a circuit board (main control board, first circuit board) and a circuit board case (for example, a transparent ABS resin case, first circuit board case) that houses the circuit board. Multiple types of electronic components are mounted on the circuit board. The circuit board case (first circuit board case) consists of a first case that covers the first surface (front) of the circuit board and a second case that covers the second surface (back) of the circuit board. The circuit board is housed (sealed) inside the circuit board case. 【0054】 The second circuit board unit 330 consists of a circuit board (game value control circuit board, second circuit board) and a circuit board case (for example, a transparent ABS resin case, second circuit board case) that houses the circuit board. Multiple types of electronic components are mounted on the circuit board. The circuit board case (second circuit board case) consists of a first case that covers the first surface (front) of the circuit board and a second case that covers the second surface (back) of the circuit board. The circuit board is housed (sealed) inside the circuit board case. 【0055】 The main control board (first board) related to the first board unit 320 and the game value control board (second board) related to the second board unit 330 are connected BtoB (electrically connected via board-to-board connectors) within the range of area S. 【0056】 Figure 8 is a view of the substrate base 350 from the front. Figure 9(a) is a perspective view of the substrate base 350 from the front right diagonally above. Figure 9(b) is a perspective view of the substrate base 350 from the front right diagonally below. Figure 10 is a perspective view of the substrate base 350 from the front left diagonally below. The substrate base 350 is made of resin, has a long rectangular shape in the left-right direction, and is formed to be able to attach (support) the first substrate unit 320, the second substrate unit 330, and the sealing member 340. 【0057】 As shown in Figure 8, the substrate base 350 is provided with seven base-side engaging portions 351 (351a to 351g). The base-side engaging portions 351 are formed to be able to engage with the substrate-side engaging portions, which will be described later. As shown in Figures 9(a) and 9(b), the base-side engaging portion 351 is roughly L-shaped when viewed from above, with an opening on the right side. The substrate-side engaging portion can enter the inside of the base-side engaging portion 351 from the right side. 【0058】 Figure 11 is a view of the first circuit board unit 320 and the second circuit board unit 330 from the rear side (rear side). Figure 12(a) is a perspective view of the first circuit board unit 320 and the second circuit board unit 330 from the rear right diagonally above. Figure 12(b) is a perspective view of the first circuit board unit 320 and the second circuit board unit 330 from the rear right diagonally below. As shown in Figure 11, the second circuit board unit 330 is equipped with four circuit board-side engaging portions 331 (331a to 331d). The first circuit board unit 320 is equipped with three circuit board-side engaging portions 321 (321a to 321c). As shown in Figures 12(a) and 12(b), the circuit board-side engaging portions 321 and 331 are roughly L-shaped when viewed from the top and bottom, with the left side open when viewed from the front of the gaming machine. 【0059】 The substrate-side engaging portion 331a can engage with the base-side engaging portion 351a of the substrate base 350. The substrate-side engaging portion 331b can engage with the base-side engaging portion 351b of the substrate base 350. The substrate-side engaging portion 331c can engage with the base-side engaging portion 351c of the substrate base 350. The substrate-side engaging portion 331d can engage with the base-side engaging portion 351d of the substrate base 350. The substrate-side engaging portion 321a can engage with the base-side engaging portion 351e of the substrate base 350. The substrate-side engaging portion 321b can engage with the base-side engaging portion 351f of the substrate base 350. The substrate-side engaging portion 321c can engage with the base-side engaging portion 351g of the substrate base 350. 【0060】 As shown in Figures 9(a) and 9(b), the substrate base 350 includes a first wall portion 352 (upper wall portion) formed on the upper side (along the upper edge) and extending in the left-right direction, and a second wall portion 353 (lower wall portion) formed on the lower side (along the lower edge) and extending in the left-right direction. The first wall portion 352 and the second wall portion 353 are walls perpendicular to the bottom surface of the substrate base 350. 【0061】 Returning to Figure 7, Figure 7 shows the second substrate unit 330 placed in a predetermined position on the substrate base 350 and slid to the left (one side in the left-right direction), with the substrate-side engaging portion 331 (Figure 11, etc.) engaged with the base-side engaging portion 351 (Figure 8, etc.), and the second substrate unit 330 is held in place by the substrate base 350. At this time, the movement of the second substrate unit 330 to the left and in the front-back direction is restricted by this engagement. In addition, the movement of the second substrate unit 330 in the up-down direction is restricted by the first wall portion 352 and the second wall portion 353 shown in Figure 9. 【0062】 Figure 7 shows the first substrate unit 320 placed in a predetermined position on the substrate base 350 and slid to the left (one side in the left-right direction), with the substrate-side engaging portion 321 (Figure 11, etc.) engaged with the base-side engaging portion 351 (Figure 8, etc.), and the first substrate unit 320 is held in place by the substrate base 350. At this time, the movement of the first substrate unit 320 to the left and in the front-back direction is restricted by this engagement. In addition, the movement of the first substrate unit 320 in the up-down direction is restricted by the first wall portion 352 and the second wall portion 353 shown in Figure 9. 【0063】 As shown in Figure 10, the substrate base 350 has a third wall portion 354 (right wall portion) formed on the right side when viewed from the front and extending in the vertical direction. The third wall portion 354 is a wall portion perpendicular to the bottom surface of the substrate base 350. 【0064】 As shown in Figure 7, the sealing member 340 (crimping member) is a member fitted between the first substrate unit 320 (the right end) and the substrate base 350 (the third wall portion 354 shown in Figure 10). In this embodiment, the fitting of the sealing member 340 fixes (seals) the first substrate unit 320 to the substrate base 350, i.e., "crimping the main body". 【0065】 Figure 13(a) is a perspective view of the sealing member 340 from the front. Figure 13(b) is a perspective view of the sealing member 340 from the rear. The sealing member 340 is made of resin and is a box-shaped member with an open rear (back) surface. The sealing member 340 comprises a claw portion 341, a first housing portion 342 (first part), and a second housing portion 343 (second part). As shown in Figure 13(b), the claw portion 341 consists of a pair of claw portions provided at a predetermined interval in the left-right direction. The first housing portion 342 and the second housing portion 343 are box-shaped portions into which a member can enter. The sealing member 340 can be said to be divided into three rooms (spaces). 【0066】 As shown in Figures 8 and 10, the substrate base 350 is provided with a mating portion 355. The mating portion 355 is formed to be matable with (the claw portion locks into) the claw portion 341 of the sealing member 340. The mating portion 355 is formed at the tip of a wall portion (a pair of wall portions provided at a predetermined distance in the left-right direction) erected on the bottom surface of the substrate base 350, and is a portion that protrudes inward (inward in the left-right direction) for a predetermined length. 【0067】 Furthermore, a disengagement portion 356 is provided below the mating portion 355. Unlike the mating portion 355, the disengagement portion 356 does not protrude inward by a predetermined length. 【0068】 Here, as shown in Figure 14(a), if we let the left-right distance of the fitted portion 355 be interval M and the left-right distance of the disengaging portion 356 be interval N, then interval N is greater than interval M. Also, as shown in Figure 14(b), let the left-right distance (longest distance) of the claw portion 341 be interval L1. Also, let the left-right distance of the base end of the claw portion 341 be interval L2. Interval M is smaller than interval L1 and slightly larger than interval L2. Therefore, when the sealing member 340 is pushed from the front to the back, the claw portion 341 engages (locks) with the fitted portion 355. As a result, the sealing member 340 is held (fixed) to the substrate base 350. 【0069】 As will be explained in detail later, the sealing member 340, after undergoing the prescribed processing, can be moved (slid) downward, and when moved downward, the claw portion 341 reaches the engagement release portion 356. When the claw portion 341 reaches the engagement release portion 356, the engagement of the claw portion 341 is released (the claw is disengaged) because the gap N is greater than the gap L1. Therefore, the sealing member 340 can be pulled towards the front and removed from the substrate base 350. 【0070】 As described above, when the sealing member 340 is pushed in from the front to the back, the claw portion 341 engages (locks) with the fitting portion 355, and the sealing member 340 is held (fixed) to the substrate base 350. Figure 7 can be said to represent the state in which the main body crimping has been achieved. In the state in which the main body crimping has been performed, the movement of the first substrate unit 320 and the second substrate unit 330 to the right is restricted, and the first substrate unit 320 and the second substrate unit 330 cannot be removed from the substrate base 350. 【0071】 In this embodiment, the main body can be crimped twice, similar to conventional gaming machines. The first crimping of the main body is called "B crimping," and the second crimping of the main body is called "C crimping." The sealing member 340 is equipped with a first housing section 342 and a second housing section 343, and is configured to allow for two sealing operations. 【0072】 First, let's explain crimping method B. As shown in Figures 8 and 10, the substrate base 350 is provided with a first projection 357. The first projection 357 is a rectangular prism-shaped portion erected on the bottom surface of the substrate base 350. The first projection 357 can be housed inside the first housing portion 342 of the sealing member 340 (it is fitted into the first housing portion 342). 【0073】 In this embodiment, the B crimping is performed by housing the first projection 357 in the first housing portion 342 of the sealing member 340 (fitting the first projection 357 and the first housing portion 342 together) and fitting the claw portion 341 into the fitting portion 355 (attaching the sealing member 340 to the substrate base 350). The B crimping in this embodiment can be performed without using any special tools (such as a screwdriver). 【0074】 In the crimped state (Figure 7), the sealing member 340 has its claw portion 341 fitted into the fitting portion 355, restricting its movement in the front-to-back direction. Also, as shown by the dashed line in Figure 7, the sealing member 340 is sandwiched between the right end of the first substrate unit 320 and the substrate base 350 (the third wall portion 354 shown in Figure 10), restricting its movement in the left-to-right direction. Furthermore, since the sealing member 340 houses the first projection 357 in the first housing portion 342 (the first housing portion 342 and the first projection 357 are fitted together), its movement in the up-to-down direction is restricted. 【0075】 Next, we will explain the case where, after crimping B has been performed, the first substrate unit 320 is removed from the substrate base 350 for inspection, etc., and then the first substrate unit 320 is reattached to the substrate base 350 and crimping C is performed again. As shown in Figure 15(a), the first housing portion 342 of the sealing member 340 is damaged (broken). That is, the part that restricts the vertical movement of the sealing member 340 is damaged. Without using any special tools (such as nippers), the worker can separate (cut) the first housing portion 342 from the main body of the sealing member 340 by bending it towards the worker. At this time, the first projection 357 (substrate base 350) is not damaged as a result of the damage to the first housing portion 342. In other words, no trace is left on the main body side (substrate base 350). The sealing member 340, now without the first housing portion 342, can slide (move) downwards. 【0076】 As shown in Figure 15(b), the sealing member 340, which no longer has the first housing portion 342, is slid downward. As a result of this sliding (movement), the claw portion 341 of the sealing member 340 reaches the engagement release portion 356, and the engagement of the claw portion 341 is released. In other words, the claw that restricts movement in the front-rear direction is released. 【0077】 As shown in Figure 15(c), pull the sealing member 340 towards you to remove it (separate it from the substrate base 350). 【0078】 As shown in Figure 16(a), the first substrate unit 320 is slid to the right (the other side in the left-right direction). The engagement between the substrate-side engaging portion 321 and the base-side engaging portion 351 is released. 【0079】 As shown in Figure 16(b), pull the first substrate unit 320 towards you to remove it (separate it from the substrate base 350). 【0080】 Although not shown in the diagram, after inspecting the first substrate unit 320, the first substrate unit 320 is placed on the substrate base 350 and slid to the left. 【0081】 As shown in Figures 8 and 10, the substrate base 350 is provided with a second projection 358. The second projection 358 is a plate-shaped portion (rib) erected on the bottom surface of the substrate base 350. The second projection 358 can be housed inside the second housing portion 343 of the sealing member 340. In this embodiment, the C crimping is performed by housing the second projection 358 in the second housing portion 343 of the sealing member 340 (fitting the second projection 358 and the second housing portion 343 together) and fitting the claw portion 341 into the fitting portion 355 (attaching the sealing member 340 to the substrate base 350). In this embodiment, the C crimping can be performed without using any special tools (such as a screwdriver). 【0082】 Figure 16(c) shows the state in which the second projection 358 is housed in the second housing portion 343 of the sealing member 340, the sealing member 340 is fitted, and the C-crimping is performed. Once the C-crimping is performed, the movement of the first substrate unit 320 is restricted again, making it impossible to remove the first substrate unit 320. Note that to remove the first substrate unit 320 from this C-crimped state, the second housing portion 343 of the sealing member 340 is damaged (broken). The worker can bend the second housing portion 343 toward the front without using tools such as nippers, and separate (cut) the second housing portion 343 from the main body of the sealing member 340. At this time, the second projection 358 (substrate base 350) is not damaged due to the damage to the second housing portion 343. In other words, no trace is left on the main body side (substrate base 350). 【0083】 In this embodiment, it is not possible to perform crimping C before crimping B. When fitting the sealing member 340 while the first housing portion 342 and the second housing portion 343 are undamaged, if one attempts to accommodate the second projection 358 in the second housing portion 343, the first projection 357 and the first housing portion 342 interfere, preventing the sealing member 340 from being fitted. On the other hand, when fitting the sealing member 340 while the first housing portion 342 and the second housing portion 343 are undamaged, if one attempts to accommodate the first projection 357 in the first housing portion 342, the second projection 358 and the second housing portion 343 do not interfere, allowing the sealing member 340 to be fitted. This prevents incorrect assembly. This prevents products from being shipped with crimping C performed instead of crimping B. In this embodiment, however, a state in which the first projection 357 is housed in the first housing portion 342 and the second projection 358 is housed in the second housing portion 343, i.e., a state in which both are fitted together, is not realized. 【0084】 In the state where the first housing section 342 is damaged, there is nothing that interferes with the first projection 357 of the sealing member 340 (Figure 16(c)), so the second projection 358 can be housed in the second housing section 343. That is, the sealing member 340 can be fitted in such a way that the second projection 358 is housed in the second housing section 343, and then crimping can be performed. 【0085】 In this embodiment, in crimping method B, the second projection 358 is not housed in the second housing portion 343, while in crimping method C, the second projection 358 is housed in the second housing portion 343. Therefore, when crimping method C is performed, the position of the sealing member 340 is slightly higher than when crimping method B is performed. 【0086】 Next, the procedure for partial model changes will be described. Here, we will show the case where partial model changes are performed from a state where C crimping has been completed, but it may also be the case where partial model changes are performed from a state where B crimping has been completed. In the partial model change according to this embodiment, the first board unit 320 is changed (replaced) and the sealing member 340 is changed (replaced), but the board base 350 is not changed (not replaced). Also, the second board unit 330 can be reused without being changed. 【0087】 As shown in Figure 17(a), the second housing portion 343 of the sealing member 340 is damaged (broken). At this time, the second projection 358 (substrate base 350) is not damaged due to the damage to the second housing portion 343. In other words, no trace is left on the main body side (substrate base 350). 【0088】 As shown in Figure 17(b), the sealing member 340, which no longer has the second housing portion 343, is slid downward. When the sealing member 340 moves downward and the claw portion 341 reaches the engagement release portion 356, the engagement of the claw portion 341 is released (the claw comes off). 【0089】 As shown in Figure 17(c), pull the sealing member 340 towards you to remove it (separate it from the substrate base 350). 【0090】 As shown in Figure 18(a), the first substrate unit 320 is slid to the right (the other side in the left-right direction). The engagement between the substrate-side engaging portion 321 and the base-side engaging portion 351 is released. 【0091】 As shown in Figure 18(b), pull the first substrate unit 320 towards you to remove it (separate it from the substrate base 350). 【0092】 Although not shown in the diagram, a new first circuit board unit 320 (the first circuit board unit 320 of the new model) is placed on the circuit board base 350 and slid to the left. 【0093】 As shown in Figure 18(c), a new sealing member 340, i.e., a sealing member 340 having a first housing portion 342 and a second housing portion 343, is fitted into the substrate base 350 (i.e., crimping is performed). 【0094】 The first circuit board unit 320 and the sealing member 340 are replaced, but partial model changes can be made without destroying (replacing) the circuit board base 350. In other words, the circuit board base 350 can be reused. Therefore, the number of parts that need to be changed when making partial model changes can be reduced (compared to conventional methods). This reduces costs. 【0095】 Furthermore, partial model changes can be performed without using specific tools (such as pliers or screwdrivers). This improves work efficiency. Since model changes involve changing many units at once (consecutively), enabling changes without tools significantly reduces work time. 【0096】 Furthermore, partial model changes can be performed without leaving any traces (marks resulting from the destruction of the sealing component 340) on the main unit. This prevents the gaming machine from being classified as defective or counterfeit based on the presence of such traces. 【0097】 Furthermore, while no traces are left on the main body, traces are left on the sealing member 340. Therefore, the worker can quickly determine whether (a) neither the first housing section 342 nor the second housing section 343 is broken, (b) the first housing section 342 is broken but the second housing section 343 is not, or (c) both the first housing section 342 and the second housing section are broken. This makes it easy to verify whether any fraud has occurred. 【0098】 As shown in Figure 18(c), the first substrate unit 320 is equipped with a seal 325. Although not shown in other figures, the first substrate unit 320 is equipped with a seal 325. The seal 325 is attached to the substrate case related to the first substrate unit 320. 【0099】 Figure 19(a) shows the details of the seal 325. The seal 325 has the main board number (board identification information) and a QR code (registered trademark) printed on it. The QR code (registered trademark) is the rectangular area in the upper left (the area with diagonal lines). The seal 325 is designed so that text can be written on (or stamped). The seal 325 has sections A 411, B 412, C 413, and D 414 which are fields on which text can be written (or stamped). 【0100】 Column A 411 is used when the circuit board related to the first circuit board unit 320 is assembled (sealed) into the circuit board case, and the date (date of work) and the name of the person in charge (name of the worker) are entered there. Column B 412 is used when the first substrate unit 320 is sealed to the substrate base 350 using the sealing member 340, that is, when the first main body crimping (B crimping) is performed, and the date (work date) and the name of the person in charge (worker's name) are entered. Column C 413 is used when an on-site inspection takes place, the first circuit board unit 320 is removed, and then the first circuit board unit 320 is resealed to the circuit board base 350 using the sealing member 340, that is, when the second main body crimping (C crimping) is performed, and the date (date of work) and the name of the person in charge (name of worker) are recorded. Column D 414 is used when the circuit board related to the first circuit board unit 320 is removed from the circuit board case due to replacement or other reasons, and then reassembled (re-sealed) into the circuit board case. The date (date of work) and the name of the person in charge (name of the worker) are recorded there. 【0101】 Although not shown in the diagram, the second substrate unit 330 may be equipped with a seal equivalent to that of the seal 325 and configured to be managed in the same way as the first substrate unit 320. 【0102】 As shown in Figure 19(b), a seal 345 is attached to the sealing member 340. The seal 345 consists of a seal 345a (for example, blue) and a transparent seal 345b that covers the seal 345a. The seal 345b protects the surface of the seal 345a. The seal 345a has identification information Z (identifier, management number) printed on it, which enables the identification of the sealing member 340. The identification information Z consists of multiple characters (characters include numbers, symbols, etc.), and one piece of identification information Z is assigned to one sealing member 340. In other words, there is no duplicate identification information Z, and it is possible to identify one individual (sealing member 340) from one piece of identification information Z. The identification information Z may also be information (management number) linked to the first substrate unit 320 (main control board). 【0103】 In addition to the identification information Z, the seal 345a has a QR code (registered trademark) and the manufacturer's name printed (displayed) on it. By reading the QR code (registered trademark) using an information terminal, the worker can obtain information related to the sealing member 340 (including the identification information Z). 【0104】 Seal 345a is a weak (easily torn, fragile) seal. Seal 345a is designed to tear when attempted to peel it off. Furthermore, attempting to peel off the transparent seal 345b covering seal 345a will cause seal 345a to tear accordingly. Therefore, once seal 345 is peeled off (or attempted to be peeled off), it is impossible to restore seal 345 to its original state. In other words, any attempt to peel off seal 345 will always leave a trace. This makes it easier to detect fraud and improves fraud prevention performance. In addition, it is difficult to peel off seal 345 and attach it to another sealing member 340. Therefore, seal 345 cannot be reused and sealing member 340 cannot be duplicated. This prevents the duplication of sealing member 340 and fraud from occurring. 【0105】 In this embodiment, the board set 310 comprises a first board unit 320 (board: main control board) and a second board unit 330 (board: game value control board), with each board electrically connected (BtoB connection). Since each board is equipped with a CPU, this specification can be called a 2-board 2-CPU system. 【0106】 (modified version) It may be configured as one board with two CPUs. That is, the main control board and the game value control board may not be separate but consist of a single board, and two CPUs may be mounted on that single board. In other words, the main control board (a single board) may be configured to also perform the functions of the game value control board. In that case, B2B connection between boards is unnecessary. In this embodiment, the second board unit 330 may be omitted, and the system may consist only of the first board unit 320. 【0107】 The gaming machine of this embodiment is It comprises a back box (for example, a casing 11), a front door (for example, a front door 12), and a circuit board set (for example, a circuit board set 310), The aforementioned substrate set comprises a substrate base (e.g., substrate base 350), a substrate unit (e.g., first substrate unit 320), and a sealing member (e.g., sealing member 340), The aforementioned substrate unit comprises a substrate and a substrate case for housing the substrate, The substrate unit installed on the substrate base is sealed to the substrate base by the sealing member installed on the substrate base, and can be opened by breaking the sealing member. The aforementioned gaming machine is capable of partial model changes, which involve modifying a portion of the circuit board set while maintaining the installation state of the back box. When the aforementioned partial model change is made, the circuit board unit is subject to change, the sealing member is subject to change, and the circuit board base is not subject to change. The sealing member to be modified can be destroyed without using a predetermined tool. No traces of the damage remain on the substrate base that is not subject to modification. 【0108】 In the aforementioned partial model change, the circuit board unit and the sealing member are changed, but the circuit board base does not need to be changed. In other words, the partial model change can be performed without changing the circuit board base. Therefore, the number of parts that need to be changed when performing the partial model change can be reduced. (1) This can reduce costs. Furthermore, the sealing member can be broken and the circuit board unit opened without using a specific tool (e.g., nippers). (2) This improves work efficiency. Furthermore, even if the sealing member is destroyed, no traces of the destruction remain on the substrate base. (3) This prevents the gaming machine from being deemed a defective or counterfeit product based on the presence of such traces. According to this embodiment, the above (1), (2), and (3) can be realized in a suitable manner with a good balance. 【0109】 Furthermore, in the gaming machine of this embodiment, The sealing member has an identifier (e.g., identification information Z) that identifies the sealing member. The sealing components can be managed (identified) based on identifiers, allowing for verification of whether or not they have been tampered with. This improves the effectiveness of fraud prevention and enables early detection of any fraudulent activity. 【0110】 Furthermore, the present invention is not limited to the embodiments described above, and can be implemented in various modified forms without departing from its essence. In addition, within the scope of the invention, it is possible to freely combine, modify, or omit any of the components. Moreover, the invention according to this embodiment is not limited to the gaming machine 10 (Smart Pachi Slot®), but can also be applied to conventional gaming machines (conventional slot machines), that is, gaming machines in which players can physically touch gaming tokens, play games by inserting gaming tokens, and receive gaming tokens into a tray based on winning predetermined combinations. [Explanation of symbols] 【0111】 11. Cabinet (back box) 12 Front Door 310 PCB Set 320 First circuit board unit (circuit board unit) 340 Sealing component 350 PCB base Z Identification Information

Claims

[Claim 1] A gaming machine comprising a back box, a front door, and a circuit board set, The aforementioned substrate set comprises a substrate base, a substrate unit, and a sealing member. The aforementioned substrate unit comprises a substrate and a substrate case for housing the substrate, The substrate unit installed on the substrate base is sealed to the substrate base by the sealing member installed on the substrate base, and can be opened by breaking the sealing member. The aforementioned gaming machine is capable of partial model changes, which involve modifying a portion of the circuit board set while maintaining the installation state of the back box. When the aforementioned partial model change is made, the circuit board unit is subject to change, the sealing member is subject to change, and the circuit board base is not subject to change. The sealing member to be modified can be destroyed without using a predetermined tool. A gaming machine in which no traces of the aforementioned damage remain on the circuit board base that is not subject to modification. [Claim 2] The gaming machine according to claim 1, wherein the sealing member has an identifier that identifies the sealing member.

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