JP2012019899A - Game machine and speaker case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To exhibit a uniform sealing effect without increasing fastening points to fix a speaker, thereby preventing sound leakage.SOLUTION: A game machine includes a front-face case member and a rear-face case member. The front-face case member comprises a front-face portion located between a sound hole formation portion and the peripheral edge of the speaker to bring a sealing member on the peripheral edge into contact with the entire area thereof, and a sidewall portion extending from the front-face portion toward the rear-face side, and accommodates the peripheral edge in an inside space formed by the front-face portion and the sidewall portion. The rear-face case member has an installation portion to be fastened to the rear face of the sound hole formation portion and is fastened to the rear face of the sound hole formation portion with the front-face case member in between. The rear-face case member includes a pressing portion that is formed in a consecutive or intermittent manner so as to be brought into contact with the entire area of the rear face of the peripheral edge, and presses the peripheral edge toward the front-face case side by tightening force of the rear-face case member with respect to the sound hold formation portion.

Description

  The present invention relates to a gaming machine represented by a slot machine (pachislot machine) and a pachinko machine.

  A gaming machine such as a slot machine is equipped with a speaker to output sound in order to enhance the effect (for example, Patent Document 1). In the case of a slot machine, the speaker is generally disposed on the back surface of the front door and is fixed to the components of the front door. The speaker usually has a diaphragm and a frame that supports the diaphragm, and the frame has a flange-shaped portion so as to surround the periphery of the diaphragm. When fixing the speaker, it is common to use a hole formed in advance in the flange-shaped portion of the frame and screw it to the front door component.

JP 2006-1116098 A

  In recent years, there are an increasing number of game machines that produce a large volume in order to improve the production effect. In this case, it is necessary to prevent sound leakage to the side of the speaker. As a measure against sound leakage, a method is adopted in which a sealing member is provided in a flange-like portion of the frame so as to surround the diaphragm so as to be in close contact with the components of the front door. However, as described above, when fixing the speaker, in the method of screwing to the front door component using the holes formed in the flange-shaped part of the frame, the sealing member is surrounded by the fastening force around the screw. Although the sealing performance is increased, the sealing performance may be lowered at a site away from the screw. In order to solve this problem, if the fastening force is increased, the frame may be distorted. Also, if the number of fastening sites with screws is increased and the site where the fastening force is applied is evenly distributed, the mounting work of the speaker becomes complicated.

  An object of the present invention is to provide a sealing property more evenly and prevent sound leakage without increasing the number of fastening sites for fixing a speaker.

  According to the present invention, in the gaming machine in which the speaker is disposed on the back surface of the sound hole forming portion in which the sound hole is formed, the speaker supports the diaphragm and the diaphragm and surrounds the periphery of the diaphragm. A frame having a peripheral portion, and a sealing member is disposed on the front surface of the peripheral portion so as to surround the peripheral edge of the diaphragm, and the game table has a sound hole overlapping the sound hole, A front portion that is interposed between the sound hole forming portion and the peripheral portion and the seal member contacts over the entire region, and a side wall portion that extends from the front portion to the back side, and A front case member that accommodates a peripheral part in an inner space formed by the front part and the side wall part, and an attachment part fastened to the back surface of the sound hole forming part, A back case member fastened to the back of the sound hole forming portion; The back case member is formed continuously or intermittently so as to contact the back surface of the peripheral portion over the entire circumference thereof, and the peripheral portion by the fastening force of the back case member to the sound hole forming portion There is provided a gaming table comprising a pressing portion that presses the front side to the front case side.

  In addition, according to the present invention, there is provided a speaker case for a game stand in which a speaker is disposed on the back of a sound hole forming portion in which a sound hole is formed, the speaker supporting the diaphragm and the diaphragm. And a frame having a peripheral portion surrounding the periphery of the diaphragm, and a seal member is disposed on the front surface of the peripheral portion so as to surround the periphery of the diaphragm, and the speaker case includes the sound A front part that has a sound hole overlapping the hole, is interposed between the sound hole forming part and the peripheral part, and the seal member abuts over the entire area, and extends from the front part to the back side A front case member that accommodates the peripheral portion in an inner space formed by the front portion and the side wall portion, and an attachment portion that is fastened to the back surface of the sound hole forming portion. The sound hole forming portion is sandwiched between the front case members. A rear case member fastened to a surface, and the rear case member is formed continuously or intermittently so as to contact the rear surface of the peripheral edge over the entire circumference, and the rear case member A speaker case is provided that includes a pressing portion that presses the peripheral edge portion toward the front case by a fastening force with respect to the sound hole forming portion.

  ADVANTAGE OF THE INVENTION According to this invention, without increasing the fastening site | part for speaker fixation, a sealing performance can be exhibited more equally and sound leakage prevention can be aimed at.

1 is an external perspective view of a slot machine 100 according to an embodiment of the present invention. 4 is a circuit block diagram of a control unit of the slot machine 100. FIG. (A) is a diagram showing the arrangement of symbols applied to each reel (left reel 110, middle reel 111, right reel 112) in a plan view, and (b) is the type of winning combination of the slot machine 100. Illustration. The flowchart which shows the flow of a main control part main process. The disassembled perspective view around the speaker 200 of the upper lamp unit 143. (A) is a figure which shows the structure of the back part of the sound hole 143b, (b) is a permeation | transmission figure of the structure around the speaker 200 at the time of looking at the sound hole 143b from the front. (A) And (b) is a perspective view of the speaker 200 which changed the viewpoint. (A) And (b) is a perspective view of the front case member 10 which changed the viewpoint. (A) And (b) is a perspective view of the back case member 20 which changed the viewpoint. (A) And (b) is a perspective view of the speaker unit which changed the viewpoint. FIG. 11A is a front view of the speaker unit, and FIG. 11B is a cross-sectional view of the speaker unit along line AA in FIG. (A) And (b) is explanatory drawing of the attachment aspect of a speaker unit. (A) And (b) is sectional drawing of the speaker unit from which a fastening state differs. (A) And (b) is a figure which shows the other structural example of the case for speakers. (A) thru | or (c) is a figure which shows the example of arrangement | positioning of the attaching part 24a and the engaging part 13. FIG.

  Hereinafter, a gaming table according to an embodiment of the present invention will be described. This game table is provided with a plurality of types of symbols, a plurality of reels that are rotationally driven, a start lever for instructing the rotation of the reels, and each reel. A stop button for stopping, a lottery means for determining whether or not internal winning of a plurality of types of winnings is achieved by lottery, a reel stop control means for performing stop control related to the stop of reel rotation based on the lottery result of the lottery means, Determination means for determining whether or not the symbol combination displayed by the reels stopped based on the lottery result of the lottery means is a symbol combination predetermined corresponding to the winning combination internally, and a symbol stop mode Is a slot machine comprising payout control means for performing a game medium payout process for paying out a game medium corresponding to the predetermined prize mode.

  The gaming machine according to the embodiment of the present invention inserts a bill into the bill insertion slot, executes a lottery based on a bet and a start operation, displays a lottery result on a lottery result display device, and at the time of winning, the number of bonus coins Can be added to the remaining credit number, and when cash-out is selected, a casino machine that issues a receipt in which a code corresponding to the remaining credit number is written from the receipt issuing machine can be used.

  The present invention is suitable for a game machine in which a speaker is arranged on the back of a sound hole forming part in which a sound hole is formed and outputs sound effects relating to a game from this speaker. Other examples include pachinko machines, arrange ball game machines, sparrow ball game machines, and smart balls.

<Overall configuration>
A slot machine 100 shown in FIG. 1 includes a main body 101 and a front door 102 that is attached to the front surface of the main body 101 and can be opened and closed with respect to the main body 101. Inside the center of the main body 101 (not shown), three reels (left reel 110, middle reel 111, right reel 112) having a plurality of types of symbols arranged on the outer peripheral surface are arranged and stored in the direction of the rotation axis. The slot machine 100 is configured to be rotatable. These reels 110 to 112 are rotationally driven by a driving device such as a stepping motor.

  In the present embodiment, as will be described later, an appropriate number of symbols are printed on a reel band at equal intervals, and the reels 110 to 112 are configured by affixing the reel band to a predetermined annular body. When viewed from the player, the symbols on the reels 110 to 112 are generally displayed three in the vertical direction from the symbol display window 113 so that a total of nine symbols can be seen. Then, by rotating the reels 110 to 112, the combination of symbols that can be seen by the player varies. That is, each of the reels 110 to 112 functions as a display device that displays a plurality of combinations of symbols in a variable manner. In addition to the reel, an electronic image display device such as a liquid crystal display device can also be used as such a display device. In this embodiment, three reels are provided in the center of the slot machine 100. However, the number of reels and the installation position of the reels are not limited to this.

  A backlight (not shown) for illuminating the individual symbols displayed on the symbol display window 113 is disposed on the back of each of the reels 110 to 112. It is desirable that the backlight is shielded for each symbol so that the individual symbols can be illuminated evenly. In the slot machine 100, an index sensor (not shown) that is an optical sensor including a light projecting unit and a light receiving unit is provided in the vicinity of each of the reels 110 to 112. A light shielding piece of a certain length provided on the reel passes between the light receiving portion and the light receiving portion. Based on the detection result of the sensor, the position of the symbol on the reel in the rotation direction is determined, and the reels 110 to 112 are stopped so that the target symbol is displayed on the winning line.

  The effective pay line is determined in advance by the number of medals bet as a game medium. There are five pay lines 114. For example, when one medal is bet, the middle horizontal pay line is valid, and when two medals are betted, the upper horizontal win line and the lower horizontal pay line are added. If three are valid and three medals are bet, five lines including a right-down winning line and an upper-right winning line are valid as winning lines. The number of winning lines 114 is not limited to five. For example, when one medal is bet, the middle horizontal winning line, the upper horizontal winning line, the lower horizontal winning line, the right Five lines, the down line and the upper right line, may be valid as the winning lines.

  The bet buttons 131 and 132 are buttons for inserting a predetermined number of medals (referred to as credits) stored electronically in the slot machine 100. In this embodiment, every time the bet button 131 is pressed, a maximum of three cards are inserted, and when the bet button 132 is pressed, three cards are inserted. Hereinafter, the bet button 132 is also referred to as a MAX bet button.

  The medal slot 141 is an slot for a player to insert a medal when starting a game. That is, the medal can be inserted electronically by the bet buttons 131 and 132, or an actual medal can be inserted (insertion operation) from the medal insertion slot 141. is there. The medals inserted into the medal insertion slot 141 pass through a medal selector provided in the slot machine 100, and regular medals are selected and the passage of medals is detected.

  The start lever 135 is a lever type switch for starting the rotation of the reels 110 to 112. That is, when a desired number of medals is inserted into the medal insertion slot 141 or when the bet buttons 131 and 132 are operated and the start lever 135 is operated, the reels 110 to 112 start rotating. The operation on the start lever 135 is referred to as a game start operation.

  The stop button unit 136 is provided with stop buttons 137 to 139. The stop buttons 137 to 139 are button-type switches for individually stopping the reels 110 to 112 that have started rotating by operating the start lever 135, and are associated with the reels 110 to 112. Hereinafter, the operation on the stop buttons 137 to 139 is referred to as a stop operation, the first stop operation is referred to as a first stop operation, the next stop operation is referred to as a second stop operation, and the last stop operation is referred to as a third stop operation. Note that a light emitter may be provided inside each stop button 137 to 139, and when the stop button 137 to 139 can be operated, the light emitter may be turned on to notify the player.

  The payment button 134 is a button for adjusting the medals electronically stored in the slot machine 100 and the bet medals and discharging them from the medal payout exit 155. The door key hole 140 is a hole into which a key for unlocking the front door 102 of the slot machine 100 is inserted. Below the stop button unit 136 is provided a title panel 162 for displaying the model name and pasting various types of certificate. At the lower part of the title panel 162, a medal payout opening 155 and a medal tray 161 are provided.

  The sound hole 180 is a hole for outputting the sound of a speaker provided inside the slot machine 100 to the outside. The side lamps 144 provided on the left and right portions of the front door 102 are decorative lamps for exciting games. An effect device 160 is disposed above the front door 102, and an upper lamp unit 143 is provided above the effect device 160. A sound hole 143b is formed in the main body member 143a of the upper lamp unit 143 to form a sound hole forming portion.

  The effect device 160 includes a liquid crystal display device 157, an effect member (not shown) and a driving mechanism thereof, and performs an effect by the image display by the effect display device 157 and the effect member. Note that the liquid crystal display device 157 is not limited to a liquid crystal display device, but may be configured to display various effect images and various game information. For example, a multi-segment display (7-segment display), a dot matrix display, an organic display An EL display, a plasma display, a reel (drum), or a display device including a projector and a screen may be used. Further, the display screen has a rectangular shape and is configured so that the player can visually recognize the entire display screen. In the case of this embodiment, the display screen is rectangular, but may be square. In addition, a decorative object (not shown) may be provided on the periphery of the display screen, and a part of the peripheral edge of the display screen may be hidden by the decorative object, so that the display screen looks irregular. In the present embodiment, the display screen is a flat surface, but may be a curved surface.

<Control unit>
FIG. 2 describes in detail the circuit configuration of the control unit of the control unit of the slot machine 100. This figure shows a circuit block diagram of the control unit. The control unit of the slot machine 100 can be broadly divided into main effects according to a main control unit 300 that controls the progress of the game and a command signal (hereinafter simply referred to as “command”) transmitted by the main control unit 300. And a second sub-control unit 500 that controls various devices based on a command transmitted from the first sub-control unit 400.

<Main control unit>
First, the main control unit 300 of the slot machine 100 will be described. The main control unit 300 includes a basic circuit 302 that controls the entire main control unit 300. The basic circuit 302 includes a CPU 304, control program data, lottery data used in the internal lottery of a winning combination, and reel stop. A ROM 306 for storing a position, a RAM 308 for temporarily storing data, an I / O 310 for controlling input / output of various devices, and a counter timer 312 for measuring time and frequency It is installed. Note that another storage device may be used for the ROM 306 and the RAM 308, and this is the same for the first sub-control unit 400 described later.

  The CPU 304 of the basic circuit 302 operates by inputting a clock signal of a predetermined period output from the crystal oscillator 314 as a system clock. Further, when the power is turned on, the CPU 304 transmits the frequency division data stored in the predetermined area of the ROM 306 to the counter timer 312. The counter timer 312 sets the interrupt time based on the received frequency division data. An interrupt request is transmitted to the CPU 304 at every interrupt time. In response to this interrupt request, the CPU 304 monitors each sensor and transmits a drive pulse. For example, when the clock signal output from the crystal oscillator 314 is set to 8 MHz, the frequency division value of the counter timer 312 is set to 1/256, and the data for frequency division of the ROM 306 is set to 47, the interrupt reference time is 256 × 47 ÷ 8 MHz. = 1.504 ms. WDT 313 is a watchdog timer.

  The basic circuit 302 includes a random number generation circuit 316 that is used as a hardware random number counter that changes a numerical value in a range of 0 to 65535, and a start signal output circuit 338 that outputs a start signal (reset signal) when the power is turned on. When the activation signal is input from the activation signal output circuit 338, the CPU 304 starts game control (starts a main control unit main process described later).

  In addition, the basic circuit 302 is provided with a sensor circuit 320, and the CPU 304 performs various sensors 318 (a bet button 131 sensor, a bet button 132 sensor, a medal detection sensor for a medal selector, a stop button 137 sensor, a stop sensor for each interrupt time. Button 138 sensor, stop button 139 sensor, checkout button 134 sensor, medal payout sensor for medals paid out from the medal payout device, reel 110 index sensor, reel 111 index sensor, reel 112 index sensor, etc. is doing. When the sensor circuit 320 detects the H level of the start lever sensor, a signal indicating this detection is output to the random number generation circuit 316. Receiving this signal, the random number generation circuit 316 latches the value at that timing and stores it in a register that stores the random value used for the lottery.

  Two start lever 135 sensors are installed inside the start lever 135 and detect a start operation by the player. The stop button 137 sensor, the stop button 138 sensor, and the stop button 139 are installed in each of the stop buttons 137 to 139, and detect the operation of the stop button by the player.

  The bet button 131 sensor and the bet button 132 sensor are installed in each of the medal insertion buttons 130 to 132, and an insertion operation for inserting a medal electronically stored in the RAM 308 as an insertion medal into the game. Is detected. The settlement button 134 sensor is provided on the settlement button 134. When the settlement button 134 is pressed once, the medals stored electronically are settled. The medal payout sensor is a sensor for detecting a medal paid out by the medal payout device. Each of the above sensors may be a non-contact type sensor or a contact type sensor.

  The index sensor of the reel 110, the index sensor of the reel 111, and the index sensor of the reel 112 are installed at predetermined positions on the mounting bases of the reels 110 to 112, and each time the light shielding piece provided on the reel passes, Become a level. When detecting this signal, the CPU 304 determines that the reel has made one rotation, and resets the rotational position information of the reel to zero.

  The main control unit 300 is provided with a drive circuit 322 for driving a stepping motor provided in a reel device including reels 110 to 112, and a drive circuit for driving a solenoid provided in a medal selector 336 for selecting inserted medals. 324 is provided, a drive circuit 326 for driving a motor provided in the medal payout device 337 is provided, and a drive circuit 328 for driving various lamps 335 is provided.

  Further, an information output circuit 334 (external concentration terminal board 248) is connected to the basic circuit 302, and the main control unit 300 is connected to an external hall computer (not shown) or the like via the information output circuit 334. The game information (for example, game state) of the slot machine 100 is output to the information input circuit 652 provided.

  In addition, the main control unit 300 includes an output interface for transmitting a command to the first sub control unit 400 and enables communication with the first sub control unit 400. Note that information communication between the main control unit 300 and the first sub control unit 400 is one-way communication, and the main control unit 300 is configured to be able to transmit signals such as commands to the first sub control unit 400. However, the first sub-control unit 400 is configured not to transmit a signal such as a command to the main control unit 300.

<Sub control unit>
Next, the first sub control unit 400 of the slot machine 100 will be described. The first sub-control unit 400 includes a basic circuit 402 that receives a control command transmitted from the main control unit 300 via an input interface and controls the entire first sub-control unit 400 based on the control command. The basic circuit 402 includes a CPU 404, a RAM 408 for temporarily storing data, an I / O 410 for controlling input / output of various devices, and a counter timer 412 for measuring time and frequency. It is installed. The CPU 404 of the basic circuit 402 operates by inputting a clock signal of a predetermined period output from the crystal oscillator 414 as a system clock, and controls the control program and data for controlling the entire first sub-control unit 400, lighting of the backlight A ROM 406 in which data for controlling patterns and various displays is stored is provided.

  The CPU 404 transmits the frequency division data stored in the predetermined area of the ROM 406 to the counter timer 412 via the data bus at a predetermined timing. The counter timer 412 determines an interrupt time based on the received frequency dividing data, and transmits an interrupt request to the CPU 404 at each interrupt time. The CPU 404 controls each IC and each circuit based on the interrupt request timing.

  The first sub-control unit 400 is provided with a sound source IC 418, and the sound source IC 418 is provided with a speaker 180a for the sound hole 180 and a speaker 200 for the sound hole 143b via an output interface. The sound source IC 418 controls the sound output from the amplifier and speakers 180a and 200 in accordance with a command from the CPU 404. The sound source IC 418 is connected to an S-ROM (sound ROM) in which sound data is stored, and the sound data acquired from the ROM is amplified by an amplifier and output from the speakers 180a and 200.

  Further, the first sub-control unit 400 is provided with a drive circuit 422, and various lamps 420 (upper lamp unit 143, side lamp 144, title panel 162, etc.) are provided on the drive circuit 422 via an input / output interface. ing.

  In addition, the CPU 404 transmits and receives signals to the second sub control unit 500 via the output interface. In the second sub-control unit 500 of the slot machine 100, the drive devices included in the liquid crystal display device 157 and the rendering device 160 are controlled. In this way, the performance is executed as the game progresses.

<Pattern arrangement>
A symbol arrangement applied to each of the reels 110 to 112 will be described with reference to FIG. This figure is a diagram in which the arrangement of symbols applied to each reel (left reel 110, middle reel 111, right reel 112) is developed in a plane.

  In each reel 110 to 112, a plurality of types (eight types in this embodiment) of symbols shown on the right side of the figure are arranged in a predetermined number of frames (21 frames of numbers 0 to 20 in this embodiment). Also, numbers 0 to 20 shown at the left end of the figure are numbers indicating the arrangement positions of symbols on the reels 110 to 112. For example, in the present embodiment, the “replay” symbol for the number 1 frame on the left reel 110, the “bell” symbol for the number 0 frame on the middle reel 111, and the “bell” symbol for the number 2 frame on the right reel 112. "Watermelon" design is arranged respectively.

<Type of winning prize>
Next, the types of winning combinations of the slot machine 100 will be described with reference to FIG. This figure shows the types of winning combinations (including actuating combinations), symbol combinations corresponding to each winning combination, and the operation or payout of each winning combination.

  Of the winning combinations in the present embodiment, the big bonuses (BB1, BB2) and the regular bonus (RB) are used as a combination for shifting to the bonus game, and the replay (replay) is a replay without newly inserting a medal. Each winning combination is sometimes distinguished from a winning combination and sometimes called an “acting combination”. However, in the “winning combination” in this embodiment, a big bonus, a regular bonus, and a replay that are operating combinations are included. included. In addition, “winning” in the present embodiment includes a case where a symbol combination of an actuator not accompanied by a medal payout (without medal payout) is displayed on an active line, for example, a big bonus, regular Includes bonuses and replay wins.

  The winning combination of the slot machine 100 includes a big bonus (BB1, BB2), a regular bonus (RB), a small combination (cherry, watermelon, bell), and replay (replay). Needless to say, the type of winning combination is not limited to this and can be arbitrarily adopted.

  “Big Bonus (BB1, BB2)” (hereinafter sometimes simply referred to as “BB”) is a special combination (operating combination) in which a big bonus game (BB game), which is a special game, is started by winning a prize. . Corresponding symbol combinations are “white 7-white 7-white 7” for BB1, and “blue 7-blue 7-blue 7” for BB2. Further, flag carryover is performed for BB1 and BB2. That is, when BB1 and BB2 are won internally, a flag indicating this is set (stored in a predetermined area of the RAM 308 of the main control unit 300), but even if BB1 and BB2 are not won in the game, a prize is won. Until then, the flag indicating the internal winning is maintained, and even after the next game, BB1 and BB2 are being internally selected, and the symbol combination corresponding to BB1 “white 7-white 7-white 7”, the symbol corresponding to BB2 The combination “blue 7-blue 7-blue 7” is in a state of winning a prize.

  The “regular bonus (RB)” is a special combination (operating combination) in which a regular bonus game (RB game) is started by winning. The corresponding symbol combination is “bonus-bonus-bonus”. Note that the RB carries over the flag as well as the above-mentioned BB. However, in the big bonus game (BB game) (details will be described later), the regular bonus game (RB game) is won internally and the combination of symbols is displayed on the winning line. In addition, the regular bonus game is started after the start of the big bonus game, and when the regular bonus game is finished once, the regular bonus game is automatically started so that the next regular bonus game is immediately started. It is good. “Short (cherry, watermelon, bell)” (hereinafter, simply referred to as “cherry”, “watermelon”, “bell”) is a winning combination in which a predetermined number of medals are paid out by winning. The symbol combinations are “cherry-ANY-ANY” for cherry, “watermelon-watermelon-watermelon” for watermelon, and “bell-bell-bell” for bell. The corresponding payout number is as shown in FIG. In the case of “cherry-ANY-ANY”, the symbol of the left reel 110 may be “cherry”, and the symbol of the middle reel 111 and the right reel 112 may be any symbol.

  “Replay” is a winning combination (operating combination) in which a game can be performed without inserting a medal (game medium) in the next game by winning, and no medal is paid out. The corresponding symbol combination is “replay-replay-replay” for replay.

<Type of gaming state>
Next, the types of gaming state of the slot machine 100 will be described. In this embodiment, the gaming state of the slot machine 100 is roughly divided into a normal game, a BB game, an RB game, and an internal winning game of a big bonus (BB) and a regular bonus (RB). However, it may be divided into a general game, a BB game, and an RB game.

<Normal game>
The winning combinations that are internally won for normal games include a big bonus (BB), regular bonus (RB), replay (replay), and small roles (cherry, watermelon, bell). “Big Bonus (BB)” is a special combination (operating combination) in which a big bonus game (BB game), which is a special game, is started by winning. “Regular Bonus (RB)” is a special combination (operating combination) that starts a regular bonus game (RB game) upon winning. The “replay” (replay) is a winning combination (operating combination) in which a game can be performed without a medal being inserted in the next game by winning, and no medal is paid out. The “small role” is a winning combination in which a predetermined number of medals are paid out by winning.

  In addition, the internal winning probability of each combination is a range of random values obtained at the time of internal lottery from numerical data corresponding to the range of lottery data associated with each combination from lottery data prepared for normal games. It is calculated by the value divided by the numerical data (for example, 65535). The lottery data prepared for the normal game is divided into several numerical ranges in advance, and each combination and lose is associated with each numerical range. It is determined whether the random number value obtained as a result of executing the internal lottery is a value corresponding to the lottery data corresponding to which combination, and the internal lottery combination is determined. This lottery data is provided with settings 1 to 6 in which the winning probabilities of at least one combination are different, and a game shop clerk can arbitrarily select and set any set value.

  In normal games, the result of the internal lottery is set to be largely lost (big bonus (BB), regular bonus (RB), replay (replay) and small role won), and the medal to be won The total number is less than the total number of medals inserted. Therefore, it is a gaming state that is disadvantageous for the player. However, when a predetermined condition is satisfied (for example, when a specific symbol combination is displayed), it is a gaming state that may be changed to increase the probability of internal winning of replaying. In this case, When a predetermined number of medals are paid out by winning a small role, there are cases where the total number of medals to be acquired exceeds the total number of medals inserted, resulting in a gaming state that is beneficial to the player.

<BB game>
The BB game is set to be in a gaming state that is beneficial to the player. That is, the BB game is in a gaming state in which the total number of medals to be acquired exceeds the total number of medals inserted. In this embodiment, the BB game is started by winning a big bonus (BB), and an RB game (described later) can be continuously executed repeatedly, and a predetermined number (for example, during the game) The process ends when more than 465 medals are obtained. However, the BB game does not allow the RB game to be executed continuously and repeatedly, and sets the role to start the RB game (the symbol combination is, for example, replay-replay-replay), and if this role is won internally, or The RB game may be set to start when winning. Furthermore, in the BB game, when the BB general game excluding the RB game during the BB game is executed a predetermined number of times (for example, 30 times), or the number of the RB games executed during the BB game is a predetermined number of times. It may be made to end when it reaches (for example, three times).

<RB game>
The RB game is set so as to be in a gaming state that is beneficial to the player. That is, the RB game is in a gaming state in which the total number of medals to be acquired exceeds the total number of medals inserted. In this embodiment, the RB game is started by winning a regular bonus (RB), and one predetermined role is set to a variation that increases the probability of internal winning (for example, “setting 1” “normal game”). Increase the internal winning probability 1/15 of “small role 1” to an internal winning probability 1 / 1.2 which is a predetermined value) and win a predetermined number (for example, 8 times) It ends when there is. A BB game ends when a predetermined number of wins are made (for example, 8 times) or when the number of RB games executed during the RB game reaches a predetermined number of times (for example, 8 times). You may make it do.

<Big winning (BB) and regular bonus (RB) internal winning games>
The winning combination that is internally won for the internal winning game of the big bonus (BB) and the regular bonus (RB) includes a replay and a small role. The big bonus (BB) and the regular bonus (RB) are not won internally, and are game states in which a symbol combination corresponding to the big bonus (BB) or the regular bonus (RB) can be won.

  However, the probability of the internal winning of the replay may be changed from the next game internally won in the big bonus (BB) and the regular bonus (RB). Until the symbol combination corresponding to the big bonus (BB) and regular bonus (RB) wins, the total number of medals to be acquired is almost the same as the total number of inserted medals, and is compared with the normal game. The gaming state may be beneficial to the player.

<Main control unit main processing>
A main control unit main process executed by the CPU 304 of the main control unit 300 will be described with reference to FIG. This figure is a flowchart showing the flow of main processing of the main control unit. As described above, the main control unit 300 is provided with the start signal output circuit (reset signal output circuit) 338 that outputs the start signal (reset signal) when the power is turned on. The CPU 304 of the basic circuit 302 to which this activation signal has been input starts reset by a reset interrupt and executes the main process of the main control unit shown in FIG. 4 according to the control program stored in advance in the ROM 306.

  When the power is turned on, first, various initial settings are performed in S1. In this initial setting, setting of the stack initial value to the stack pointer (SP) of the CPU 304, setting of interrupt inhibition, initial setting of the I / O 310, initial setting of various variables stored in the RAM 308, operation permission to the WDT 313, and initial setting Set the value.

  In S2, a medal insertion / start operation acceptance process is executed. Here, it is checked whether or not a medal has been inserted, and the winning line display lamp 120 is turned on in response to the insertion of the medal. Note that when a re-win is won in the previous game, a process of inserting the same number of medals as the number of medals inserted in the previous game is performed, so that it is not necessary for the player to insert medals. Further, it is checked whether or not the start lever 135 has been operated. If there is an operation of the start lever 135, the process proceeds to S3.

  In S3, the number of inserted medals is determined and an effective winning line is determined. In S4, the random number generated by the random number generation circuit 316 is acquired. In S5, the winning combination lottery table stored in the ROM 306 is read according to the current gaming state, and an internal lottery is performed using this and the random value acquired in S4. As a result of the internal lottery, when any winning combination is won internally, the internal winning flag of the winning combination is turned ON. In S6, reel stop data is selected based on the internal lottery result.

  In S7, rotation of all reels 110 to 112 is started. In S8, the stop buttons 137 to 139 can be received. When any of the stop buttons is pressed, any of the reels 110 to 112 corresponding to the pressed stop button is selected as the reel stop control data selected in S6. Stop based on. The reel stop control basically allows the combination of symbols corresponding to the winning combination to be displayed when there is an internal winning winning combination, and the symbol corresponding to any combination in the case of a loss, etc. Reel stop control such as so-called pull-in and kick-out is performed so that combinations are not displayed.

  When all the reels 110 to 112 are stopped, the process proceeds to S9. In S9, a winning determination is performed. Here, when a picture combination corresponding to some winning combination is displayed on the activated winning line 114, it is determined that the winning combination is won. For example, if “bell-bell-bell” is aligned on the activated winning line, it is determined that the player has won the bell. Also, the internal winning flag is reset unless the flag is carried over.

  In S10, if any winning combination with payout is won, the number of medals corresponding to the winning combination is paid out according to the number of winning lines. In S11, a game state control process is performed. In the game state control process, a process related to transition of each game state of normal game, BB game, RB game, and internal winning game is performed, and the game state is shifted when those start conditions and end conditions are satisfied. Thus, in this embodiment, a privilege is given to the player based on the combination of symbols that are stopped and displayed. Thus, one game is completed. Thereafter, the game proceeds by returning to S2 and repeating the above-described processing.

<Mounting structure of speaker 200>
Next, a mounting structure of the speaker 200 disposed on the back surface of the main body member 143a of the upper lamp unit 143 will be described. FIG. 5 is an exploded perspective view of the periphery of the speaker 200 of the upper lamp unit 143, as viewed from the back side of the main body member 143a. In the present embodiment, a speaker case including a front case member 10 and a back case member 20 is attached to the speaker 200 to constitute a speaker unit, which is fastened to the back surface of the main body member 143a by screws 30. In the case of the present embodiment, speaker units are respectively attached to the left and right ends of the main body member 143a.

  FIG. 6A is a diagram showing the configuration of the back surface portion of the sound hole 143b. On the back surface of the main body member 143a, a cylindrical mounting portion 1 having a screw hole into which a screw 30 is screwed, a pin-shaped positioning member 2 for positioning the speaker unit, and a pin-shaped contact portion 3 for contacting the speaker unit. Is formed. A plurality of contact portions 3 are provided, and the length from the back surface of the main body member 143a is set so that the front end surfaces thereof are located on the same plane. That is, the plane defined by the front end surface of the contact portion 3 defines the position of the speaker unit in the depth direction. In the case of this embodiment, four contact portions 3 are provided, and three of them are shown in FIG. The positioning member 2 defines the vertical and horizontal positions of the speaker unit.

  In the case of the present embodiment, the sound hole 143b is composed of a large number of through holes formed in a honeycomb shape, but various forms can be adopted as the hole, and a linear hole may be used. In the case of the present embodiment, the sound holes 143b are formed in a honeycomb shape, so that when the upper lamp unit 143 is viewed from the front, as shown in FIG. 10 and the speaker 200) can be seen through. That is, the area occupied by a large number of through holes as the sound holes 143b is made larger than the area on the front side of the speaker unit (particularly the front case member 10 and the speaker 200). This contributes to improving the decorativeness of the front door 102. In particular, the decorativeness can be further improved by coloring the front case member 10 with a color different from the color applied to a large number of through holes or by applying a pattern.

  FIGS. 7A and 7B are perspective views of the speaker 200 with different viewpoints. The speaker 200 has a general configuration, and in the same figure, a frame 201 having an open front surface, a diaphragm 202 supported by the frame 201, a drive unit 203 supported by the frame 201, a frame 201, a terminal portion 204 supported by 201. The frame 201 is made of metal, for example, and has a flange-shaped peripheral portion 201 a surrounding the peripheral edge of the diaphragm 202. The diaphragm 202 is made of paper or the like, for example. The drive unit 203 includes a coil, a permanent magnet, and the like, and applies vibration to the diaphragm 202. Electrical wiring for driving signals of the driving unit 203 is connected to the terminal unit 204.

  A seal member 210 is fixed to the front surface of the peripheral edge 201a. The seal member 210 is provided for preventing sound leakage, and is, for example, laminated paper. The seal member 210 is continuously formed over the entire periphery so as to surround the periphery of the diaphragm 202, and protrudes from the periphery 201a to the front side thereof.

  FIGS. 8A and 8B are perspective views of the front case member 10 with different viewpoints. The front case member 10 is made of resin, for example. The front case member 10 has a shape that follows the peripheral shape of the diaphragm 202, and includes a front portion 11, a side wall portion 12, and an engaging portion 13 in which an opening 10 a that is a sound hole overlapping the sound hole 143 b is formed. And comprising. In the present embodiment, the periphery of the diaphragm 202 has an oval shape, and thus the opening 10a has an oval shape. The shape of the opening 10a may be other than the shape shown in the figure as long as it functions as a sound hole.

  The front surface of the front portion 11 is formed flat, and the front end surface of the contact portion 3 comes into contact with the main body member 143a attached to the back surface of the upper lamp unit 143. The side wall part 12 is extended from the peripheral edge of the front part 11 to the back side. The end surface 12a of the side wall part 12 is located on the same plane.

  In the internal space of the front case member 10 formed by the front part 11 and the side wall part 12, a part on the front side of the speaker 200, particularly a part including the peripheral part 201a and the peripheral part of the diaphragm 202 is accommodated. For this reason, in the attached state, the front part 11 is interposed between the contact part 3 and the peripheral part 201a, and the surface of the seal member 210 comes into contact with the back face 11a. The back surface 11a has a width or size that allows the surface of the seal member 210 to abut over the entire area.

  The engaging portion 13 is configured to engage the front case member 10 and the back case member 20 with each other. In the case of this embodiment, the engaging portion 13 protrudes from the side wall portion 12 in the back direction to form a rectangular engaging hole 13a. ing. The front case member 10 and the back case member 20 are not necessarily configured to engage with each other, but the speaker unit can be assembled before being attached to the main body member 143a, so that the convenience of the assembly work can be improved.

  FIGS. 9A and 9B are perspective views of the back case member 20 with different viewpoints. The back case member 20 is made of resin, for example. The back case member 20 includes a side wall portion 21 that forms an opening 20a through which the speaker 200 can be inserted except for the peripheral edge portion 201a. An end surface abutting portion 21 a is formed on the front surface of the side wall portion 21 so that the end surface 12 a of the side wall portion 12 can come into contact therewith.

  A pressing portion 22 that protrudes from the side wall portion 21 to the front side is formed inside the end surface abutting portion 21a. The pressing portion 22 is formed so that the tip thereof is in contact with the back surface of the peripheral edge portion 201a over the entire circumference. In the case of the present embodiment, the pressing portion 22 is continuously formed and has an annular shape. However, the pressing portion 22 does not necessarily have to be formed continuously, and may be formed intermittently including a portion that is missing in the middle and does not contact the back surface of the peripheral edge portion 201a. Even if the contact portions are formed intermittently, for example, if the contact portions are formed at an equal pitch, the back surface of the peripheral edge portion 201a can be pressed over the entire periphery. However, the back surface of the peripheral portion 201a can be pressed more uniformly when the pressing portion 22 is continuously formed as in the present embodiment.

  A mounting portion 24 is formed on the side of the side wall portion 21. The attachment portion 24 has a plate shape protruding to the side of the side wall portion 21 and includes an attachment hole 24a through which the screw 30 is inserted. The attachment portion 24 is fastened to the attachment portion 1 by screwing the screw 30 through the attachment hole 24 a and screwing into the screw hole of the attachment portion 1. The mounting portion 24 is also provided with a positioning hole 24b. The positioning member 2 is inserted into the positioning hole 24b so that the rear case member 20 is positioned, that is, the speaker unit is positioned in the vertical and horizontal directions. The

  The back case member 20 also includes two engaging portions 23 corresponding to the engaging portions 13 of the front case member 10. In the case of this embodiment, the engaging part 23 has a wedge shape, and is inserted into the engaging hole 13a of the front case member 10 to be detachably engaged.

  The front case member 10 and the back case member 20 having such a configuration are assembled by engaging the engaging portions 13 and 23 so as to accommodate the front side portion of the speaker 20 to constitute a speaker unit. To do. 10A and 10B are perspective views of the speaker unit with different viewpoints. The diaphragm 202 of the speaker 200 can be seen from the opening 10 a of the front case member 10, but the seal member 210 is hidden by the front portion 10. Further, the back side portion of the speaker 200 is exposed to the outside through the opening 20 a of the back case member 20.

  FIG. 11A is a front view of the speaker unit, and FIG. 11B is a cross-sectional view of the speaker unit along the line AA in FIG. As shown in FIG. 11 (b), the pressing portion 22 of the back case member 20 enters the inner space of the front case member 10, and a seal member is provided between the front end of the pressing portion 22 and the back surface 11 a of the front portion 11. 210 and the peripheral part 201a are interposed. Therefore, if the pressing portion 22 can be pressed to the front portion 11 side, the seal member 210 can be brought into close contact with the back surface 11a of the front portion 11 to prevent sound leakage.

  Here, the seal member 210 has a manufacturing error in its thickness. Generally, the design thickness and error value of a seal member product are shown on a catalog. Assuming that the design thickness of the seal member 210 is 2 mm and the error value is ± 0.3 mm, the actual thickness of the seal member 210 is in the range of 1.7 mm to 2.3 mm. Therefore, it is necessary to absorb this error.

  In the case of the present embodiment, it is assumed that the engagement by the engaging portions 13 and 23 has a certain amount of play. That is, the engaging portion 13 and the engaging portion 23 are regulated in a direction away from each other so that the front case member 10 and the rear case member 20 are not separated from each other, but there is some play in the approaching direction. That is, the engaging portions 13 and 23 define the maximum separation distance between the tip of the pressing portion 22 and the back surface 11a of the front portion 11.

  On the other hand, the front case member 10 and the back case member 20 can abut the end surface 12a of the side wall portion 12 and the end surface abutting portion 21a of the side wall portion 21. And the back case member 20 are restricted in the direction in which they are close to each other. That is, the end surface 12 a of the side wall portion 12 and the end surface abutting portion 21 a of the side wall portion 21 define a minimum separation distance between the tip of the pressing portion 22 and the back surface 11 a of the front portion 11.

  The gap between the front end of the pressing portion 22 and the back surface 11a of the front portion 11 can be changed in width within the range of the difference between the maximum separation distance and the minimum separation distance. The error of can be absorbed. And adjustment of the clearance gap between the front-end | tip of the press part 22 and the back surface 11a of the front part 11, in other words, the force which the press part 22 presses the peripheral part 201a to the front part 11 side is attachment of the back case member 20. It adjusts with the fastening force with respect to the part 1, and pressurizes the sealing member 210 appropriately, and exhibits sealing performance.

  12 (a) and 12 (b) are explanatory views of the manner in which the speaker unit is attached, and are plan views before and after the speaker unit is attached. FIG. 12A shows a state before installation. In the example of FIG. 12a, the end surface 12a of the side wall part 12 and the end surface contact part 21a of the side wall part 21 are separated by a width W1. This assumes a case where the total value of the actual thicknesses of the seal member 210 and the peripheral edge portion 201a is larger than the minimum separation distance.

  Thus, by fastening the screw 30 as shown in FIG. 12B, the back case member 20 is fastened to the attachment portion 1 so as to sandwich the front case member with the contact portion 3. The front case member 10 is fixed by contact with the contact portion 3, while the distance from the plane SR defined by the front end surface of the contact portion 3 to the front end surface of the mounting portion 1 is attached from the front of the front portion 11. When the tightening force is increased due to the relationship with the distance to the front surface of the portion 24, the back case member 20 moves in a direction approaching the main body member 143 a, thereby causing a gap between the tip of the pressing portion 22 and the back surface 11 a of the front portion 11. The gap between is narrowed. As a result, the seal member 210 is compressed and a sealing force is exhibited.

  And since the press part 22 is formed so that it may contact | abut to the back surface of the peripheral part 201a over the perimeter, the fastening force which acts on the attachment part 24 is disperse | distributed, and it becomes the pressing force of the press part 22, and presses The pressing force of the portion 22 acts on the seal member 210 more uniformly without being extremely locally biased. Therefore, the sealing performance can be exhibited more evenly and the sound leakage can be prevented without increasing the fastening site for fixing the speaker.

  FIG. 11A shows a front view of the speaker unit in an attached state. In the case of this embodiment, the attachment portion 24 is located at two positions (both left and right end portions) that are both ends in the longitudinal direction of the speaker unit. Are provided respectively. Since the fastening force acts on both the left and right ends of the speaker unit in the attached state, it is promoted that the pressing force of the pressing portion 22 acts on the seal member 210 more uniformly.

  If the fastening force is too strong, there are problems such as excessive crushing of the seal member 210. In the case of this embodiment, when the end surface 12a of the side wall portion 12 and the end surface abutting portion 21a of the side wall portion 21 are in contact with each other, the tip of the pressing portion 22 and the back surface 11a of the front surface portion 11 are closer to each other. Since this is hindered by the side walls 12 and 21, it is possible to avoid a state in which the pressing force acts too strongly on the seal member 210.

  13A, the end surface 12a of the side wall portion 12 and the end surface abutting portion 21a of the side wall portion 21 are in contact with each other, and the distance W2 between the front end of the pressing portion 22 and the back surface 11a of the front surface portion 11 is minimum. The state where the separation distance is reached is shown. The minimum separation distance may be a value obtained by adding the value of the thickness of the peripheral portion 201a to a value obtained by subtracting the error value from the design thickness of the seal member 210 (for example, 1.7 mm in the above numerical example). preferable. If it does so, the sealing performance by the seal member 210 can be generally ensured irrespective of the manufacturing error of the seal member 210.

  13B, conversely, the distance W2 between the front end of the pressing portion 22 and the back surface 11a of the front portion 11 is the maximum separation distance, and is regulated by the engaging portion 13 and the engaging portion 23. Indicates the state. The maximum separation distance is a value obtained by adding the error value and the thickness of the peripheral portion 201a to the design thickness of the seal member 210 (for example, 2.3 mm + the thickness of the peripheral portion 201a in the above numerical example). Is preferred. If it does so, the sealing performance by the seal member 210 can be generally ensured irrespective of the manufacturing error of the seal member 210.

<Other embodiments>
In the above embodiment, the front case member 10 and the back case member 20 can be separated, but may be connected to each other. FIGS. 14A and 14B are diagrams showing another configuration example of the speaker case. The flexible case 14 and the front case member 10 are used instead of the one engaging portion 13 or 23 in the above embodiment. The back case member 20 is connected.

  From the open state of FIG. 14 (a), a not-shown speaker is sandwiched between the closed state as shown in FIG. 14 (b), and the engaging portion 13 and the corresponding engaging portion (not shown) Assembling the speaker unit is completed. By connecting the front case member 10 and the back case member 20, there is an advantage that one side is not lost.

  Next, the engaging force between the engaging portions 13 and 23 may be a pressing force by the pressing portion 22. For example, it is assumed that the maximum separation distance is a value obtained by adding the thickness of the peripheral portion 201 a to the design thickness of the seal member 210. If the actual thickness of the seal member 210 is larger than the design thickness due to a manufacturing error, the front case member 10 and the rear case member 20 cannot be engaged with each other by the engaging portions 13 and 23, or the seal member 210 is compressed. To be engaged. In the latter case, the engaging force between the engaging portions 13 and 23 becomes a pressing force by the pressing portion 22.

  In such a case, it is desirable that the engaging force between the engaging portions 13 and 23 and the pressing force by the fastening force act in a balanced manner. Therefore, it is desirable to arrange the set of attachment portions 24 and the set of engaging portions 13 and 23 symmetrically.

  15 (a) to 15 (c) are diagrams showing examples of arrangement of the set of mounting portions 24 and the set of engaging portions 13 and 23, both of which show a state in which the speaker unit is mounted on the back surface of the main body member 143a. It is a front view of the assumed speaker case. FIGS. 15A to 15C also illustrate a case where a speaker case is formed in accordance with the shape of the speaker 200, and FIG. 15 (b) shows the case of a circular shape, and FIG. 15 (c) shows the case of a square (square).

  15 (a) to 15 (c), lines CLv and CLh show two perpendicular line segments passing through the center when a diaphragm (not shown) is viewed from the front, and the line CLh is up and down. A line CLv is a line segment that bisects a diaphragm (not shown) on the left and right. The engaging portion 13 (and the engaging portion 23 (not shown)) is disposed on the line CLv, and in particular, the mounting hole 24a of the mounting portion 24 is disposed on the line CLh.

  With such a configuration, even when the pressing force is exerted by the engaging force between the engaging portions 13 and 23, the balance with the pressing force by the fastening force can be achieved.

Claims (9)

In the game stand in which the speaker is arranged on the back of the sound hole forming part where the sound hole is formed,
The speaker includes a diaphragm, and a frame that supports the diaphragm and has a peripheral portion that surrounds the periphery of the diaphragm;
A seal member is disposed on the front surface of the peripheral portion so as to surround the peripheral edge of the diaphragm.
The game table is
A sound hole that overlaps the sound hole, and is interposed between the sound hole forming portion and the peripheral edge portion, and a front portion where the seal member abuts over the entire area, and extends from the front portion to the back side. A front case member including a side wall portion provided therein, and housing the peripheral edge portion in an inner space formed by the front portion and the side wall portion;
A back case member fastened to the back surface of the sound hole forming portion with an attachment portion fastened to the back surface of the sound hole forming portion, and sandwiching the front case member;
The back case member is
It is formed continuously or intermittently so as to contact the back surface of the peripheral portion over the entire periphery, and the peripheral portion is pressed toward the front case by the fastening force of the back case member to the sound hole forming portion. A game stand comprising a pressing portion. In the game stand of Claim 1,
The back case member is
A game table comprising an end surface abutting portion that is formed so that an end surface of the side wall portion can abut and that defines a minimum separation distance between the pressing portion and the front portion of the front case member. In the game stand of Claim 2,
The gaming table according to claim 1, wherein the minimum separation distance is a value obtained by adding a value of the thickness of the peripheral edge to a value obtained by subtracting the error value from a design thickness of the seal member. In the game stand of Claim 1,
The game table characterized in that the front case member and the back case member respectively include engaging portions that engage with each other. In the game stand of Claim 4,
The game table according to claim 1, wherein the engaging portion defines a maximum separation distance between the pressing portion and the front portion of the front case member. In the game stand of Claim 5,
The gaming table according to claim 1, wherein the maximum separation distance is a value obtained by adding an error value and a thickness value of the peripheral edge portion to a design thickness of the seal member. In the game stand of Claim 1,
The mounting portion is
When the front case member and the back case member are viewed from the front in a state where they are attached to the back surface of the sound hole forming portion, they are respectively provided at two positions which are both ends in the longitudinal direction. A game table that features In the game stand of Claim 4, 5 or 7,
When the diaphragm is viewed from the front, the engaging portion is disposed on one of two perpendicular segments passing through the center of the diaphragm, and the mounting portion is disposed on the other line segment. A game table that features A speaker case for a gaming table in which a speaker is arranged on the back of a sound hole forming portion where a sound hole is formed,
The speaker includes a diaphragm, and a frame that supports the diaphragm and has a peripheral portion that surrounds the periphery of the diaphragm;
A seal member is disposed on the front surface of the peripheral portion so as to surround the peripheral edge of the diaphragm.
The speaker case is
A sound hole that overlaps the sound hole, and is interposed between the sound hole forming portion and the peripheral edge portion, and a front portion where the seal member abuts over the entire area, and extends from the front portion to the back side. A front case member including a side wall portion provided therein, and housing the peripheral edge portion in an inner space formed by the front portion and the side wall portion;
A back case member fastened to the back surface of the sound hole forming portion with an attachment portion fastened to the back surface of the sound hole forming portion, and sandwiching the front case member;
The back case member is
It is formed continuously or intermittently so as to contact the back surface of the peripheral portion over the entire periphery, and the peripheral portion is pressed toward the front case by the fastening force of the back case member to the sound hole forming portion. A speaker case comprising a pressing portion.