JP2008154898A - Device for preventing fraudulent act of game machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for preventing fraudulent acts capable of reliably detecting a fraudulent act when a whole board case of a control board is exchanged to a fraudulently altered model. <P>SOLUTION: The device 100 for preventing a fraudulent act of a game machine includes: a light source device 110 for forming a board case 31 of a control board with a transparent resin material to which a fluorescent dye is added and radiating an excitation light for exciting the fluorescent pigment to the board case 31; a light detector 120 for detecting fluorescence in the board case irradiated with the excitation light; a determination part 154 for determining whether or not the fluorescence is detected in the optical detector by radiating the excitation light towards the board case 31 from the light source device 110; and an alarm means 155 for sounding an alarm when it is determined by the determination part that the fluorescence is not detected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fraud prevention device for a gaming machine comprising a control board that controls the operation of the gaming machine and a board case that is formed of a transparent resin material and accommodates and holds the control board and is attached to the gaming machine.

  In gaming machines such as pachinko machines and slot machines, in order to prevent fraudulent acts on the control board that controls the operation of the gaming machines and to provide a fair game, when a fraudulent act is made on the control board, for example, a game program is A transparent substrate that can be visually inspected from the outside when it is replaced with a tampered illegal ROM, or when a tampering such as adding a fraudulent circuit by blowing a so-called jumper wire on the back side of the substrate It is attached to the gaming machine in a state accommodated in a case.

  For the ROM mounted on the control board, a seal sticker using hologram technology or an irreversible seal sticker by delamination is pasted on the board surface across the ROM, and a game facility staff sees through the board case. By visually confirming the application state of the seal seal, it is possible to inspect whether or not the ROM has been illegally replaced. In addition, regarding the structure of the board case, a plurality of lock mechanisms with a structure that cannot be opened unless the board case is partially broken (the control board cannot be accessed) are provided in easy-to-view parts. Various unauthorized opening prevention mechanisms configured so that the presence or absence of fraud can be inspected by visually confirming the state of these are proposed and put into practical use (see, for example, Patent Document 1 and Patent Document 2). .

Japanese Patent No. 3693113 JP 2003-340125 A

  However, in recent years, forgery technology on the side of fraudsters has become more sophisticated, and the conventional fraud prevention measures as described above detect this fraudulent activity when the control board is replaced with a fraudulently modified product along with the board case. There was a problem that it was difficult to do.

  For example, with regard to seal seals, forgery printing technology on the side of fraudsters has become sophisticated, and it has become difficult to accurately determine the authenticity of the seals even if a staff member at a game facility looks at the seal seals. As for the board case, if the lock mechanism is replaced with an unopened board assembly by combining a counterfeit board case made by copying a legitimate board case and an illegally modified control board, Even if an attendant visually inspects the lock mechanism in detail, fraud cannot be detected. In addition, the illegally acquired board assembly is illegally modified by breaking the lock mechanism from the back side of the board case, which is relatively difficult to detect, with a thin drill or iron, etc. If a board assembly with a lock mechanism camouflaged so that it does not exist, even if the game facility staff visually confirms the board case attached to the gaming machine, the lock mechanism is camouflaged within the scope of daily inspection. It has become difficult to do. Such fraudulent activity is often noticed later from the aggregate value of the hall computer, and is often detected by detailed inspection after removing the board assembly from the gaming machine, thus preventing damage based on fraudulent activity. There was a problem that it was not possible.

  The present invention has been made in view of such problems, and provides a fraud prevention device capable of reliably detecting this fraud when the control board is replaced with a fraudulent remodeled product together with the substrate case. A further object of the present invention is to provide a gaming machine fraud prevention device that can further prevent the occurrence of damage based on fraud.

  In order to solve the above problems and achieve the object, the present invention provides a control board (for example, the main control board 30 and the payout control board 40 in the embodiment) that controls the operation of the gaming machine (for example, the pachinko machine PM in the embodiment). Etc.) and a board case that is formed of a transparent resin material and accommodates and holds the control board and is attached to the gaming machine. In this fraud prevention device, a substrate case is formed of a transparent resin material to which a fluorescent dye is added, a light source device that irradiates the substrate case with excitation light that excites the fluorescent dye, and fluorescence in the substrate case that is irradiated with the excitation light. And a determination means for irradiating excitation light from the light source device toward the substrate case and determining whether fluorescence corresponding to the irradiation is detected by the photodetector (for example, determination in the embodiment) Unit 154), and alarm means that activates an alarm when it is determined that the fluorescence corresponding to the irradiation is not detected by the determination means (for example, the alarm output unit 155 in the embodiment, the image display device 12 of the pachinko machine PM, the electrical decoration) Device 15, speaker 16, etc.).

  In the present invention, it is preferable that the determination means is configured to make the above determination when the gaming machine is activated.

  In the present invention, the control board includes a door-like member that can be opened and closed (for example, the front frame 2 in the embodiment, a front mask in the slot machine, and the like) and an opening / closing detector that detects an opening / closing state of the door-like member. It is also preferable that the determination means is attached to the inside of the machine body so that the determination is performed when the opening / closing detector detects the closing of the door-shaped member.

  Note that the photodetector is preferably configured to selectively detect light having an emission wavelength due to fluorescence of the fluorescent dye added to the substrate case.

  The light source device is preferably configured to selectively emit light having a wavelength in the absorption spectrum band of the fluorescent dye added to the substrate case, and transmits light having a wavelength in the absorption spectrum band of the fluorescent dye to the light source device. It is desirable to provide a band-pass filter that blocks light having a wavelength in the emission spectrum band of the fluorescent dye.

  In the gaming machine fraud prevention device according to the present invention, the substrate case is formed of a transparent resin material to which a fluorescent dye is added, and in the judging means, fluorescence corresponding to the excitation light emitted from the light source device toward the substrate case is emitted. It is determined whether or not the light is detected by the photodetector, and when it is determined that no fluorescence is detected, an alarm is activated by the alarm means. Here, “alarm activation” in this specification means flashing or warning for an illumination device or an image display device provided in the gaming machine! In addition to visual alarm operations such as flashing characters or graphics, auditory alarm operations that generate alarm sounds from gaming machine speakers, each part of the gaming machine (for example, a game ball launcher in a pachinko machine, Including ball operation devices, such as reel units and medal payment devices in slot machines), and visual and auditory alarm operations on game islands based on alarm signals output to external output terminals, and games It is a concept including a similar alarm operation in the management room of the facility.

  That is, the fluorescence is detected by the photodetector only when a substrate case to which a specified fluorescent dye is added is attached, and the substrate case that does not contain the fluorescent dye does not emit light due to fluorescence. It is judged that the alarm is activated. Therefore, according to the present invention, it is possible to reliably detect such illegal acts even for illegally modified products that are not visually different from regular products or that are difficult to detect by daily visual inspection due to clever disguise. Can do.

  In the present invention, according to the configuration in which the determination means performs the abnormality determination when the gaming machine is started up, the control board (board assembly) housed in the board case is replaced by a fraudulent person from an authorized product to an unauthorized modified product. Since then, an alarm is activated when the gaming machine is started, so it is prevented before unfair gaming with a tampered control board is started, and damage caused by fraud is prevented in advance. be able to.

  Further, in the present invention, according to the configuration in which the determination means makes an abnormality determination when the closing of the door-like member is detected by the open / close detector, the board assembly is replaced from an authorized product to an unauthorized modified product by an unauthorized person. An alarm is activated when the door-like member is closed. For this reason, for example, even if a clerk at a gaming facility opens a door-like member and is replaced with a tampered product when the seat is removed by calling, etc., an alarm is activated when the door-like member is closed Can prevent damages based on fraud.

  Note that the photodetector can prevent malfunction due to light other than fluorescence in the substrate case according to a configuration that selectively detects light having an emission wavelength due to fluorescence of the fluorescent dye added to the substrate case. And fraud detection accuracy can be improved.

  According to the configuration in which the light source device selectively emits light having a wavelength in the absorption spectrum band of the fluorescent dye added to the substrate case, the fluorescent dye can be efficiently excited and the absorption spectrum band By suppressing the emission of light other than the above, it is possible to suppress the occurrence of erroneous detection due to reflected light and diffused light from the substrate case and peripheral components, and improve the detection accuracy of fraud. In addition, according to the configuration provided with a band-pass filter that transmits light in the absorption spectrum band of the fluorescent dye and blocks light in the emission spectrum band, a white light source, a lamp in the near ultraviolet region including the visible light region, etc. In the same manner as described above, the detection accuracy of fraud can be improved with a simple configuration using a relatively inexpensive light source.

  Therefore, according to the present invention, it is possible to provide a fraud prevention device capable of reliably detecting this fraudulent action when the control board is replaced with a fraudulent modified product together with the board case. It is possible to provide a fraud prevention device for a gaming machine that can prevent the occurrence of damage based on an action.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As an example of a gaming machine to which the present invention is applied, a front view and a rear view of a pachinko machine PM are shown in FIGS. 2 and 3, respectively, and the overall configuration of the pachinko machine PM will be outlined below with reference to this figure.

  In the pachinko machine PM, a front frame 2 for opening and closing mounted on a front surface of an outer frame 1 configured to have a predetermined frame size of an outer rectangular shape and forming a vertically fixed holding frame is formed on the front surface of the opening and closing of the rectangular frame size corresponding to this. The frame hinge mechanisms 3a and 3b arranged on the upper left and right sides of the front side are attached to the front so as to be able to be opened and closed laterally and attached to and detached from each other. The locking device 4 provided on the right side of the front is always used to engage the outer frame 1. When connected, they are kept closed.

  On the front side of the front frame 2, a rectangular glass door 5 and a ball tray unit 6 adapted to the front side area can be opened / closed and detached sideways using hinge mechanisms 7a, 7b, 7c provided on the left side of the front. It is assembled in a possible manner and is always kept closed using the locking device 4. A launch handle 8 for performing a launch operation of the game ball is provided at the lower right side of the ball tray unit 6. On the upper part of the front frame 2, an accommodation frame for detachably accommodating and holding the game board 10 from the front is formed integrally with the front frame 2, and the game board 10 configured with a predetermined gauge setting is attached to and detached from the accommodation frame. The set is held as possible. A game area PA in which a game ball can roll is formed on the front surface of the game board 10 and surrounded by guide rails inside and outside, and a large number of game nails are placed therein. A winning device 13 or the like is provided so that the player can face the player through the glass door 5 that is always kept closed. Each part of the glass door 5 and the game board 10 is provided with an illumination device 15 such as an LED or a lamp for visually producing the game development, and a speaker 16 for generating sound effects is provided at the back of the ball tray unit 6. Is provided.

  A mechanism set board 20 called a back set board is attached to the back side of the front frame 2, and award ball payout mechanism such as a ball storage tank 21 and a ball payout device 22, and a game ball are fired here. Various ball processing mechanisms such as a game ball launching device, a game ball discharge mechanism that guides game balls such as safe balls and out balls discharged from the game board 10 to a collection device of the game facility are provided. In addition, each part on the rear side of the game board 10 and the back set board 20 is provided on the game board 10 in accordance with the game development status on the main control board 30 that controls the operation of the pachinko machine PM in an integrated manner. An image control board 35 for controlling the operation of the image display apparatus, a payout control board 40 for controlling the operation of the ball payout apparatus based on a command signal from the main control board 30, and a game in accordance with an operation signal from the firing handle 8. A launch control board 45 that controls the operation of the ball launcher, a power board 46 that has a main power switch and supplies power to each part in the pachinko machine, a terminal board 47 that outputs various information of the pachinko machine PM to the outside of the base, etc. The pachinko machine PM is configured to be operable by being attached and connected by a connector cable. The front frame 2 is provided with an open / close detector 9 (not shown in FIGS. 2 and 3, see FIG. 1) for detecting the open / closed state of the front frame 2 with respect to the outer frame 1, and the detection signal is It is input to a control unit 150 which will be described later.

  In the pachinko machine PM configured as described above, each control board such as the main control board 30, the image control board 35, the payout control board 40, and the launch control board 45 suppresses unauthorized modification to the control board. Even when unauthorized modification is made, the state is accommodated in a pachinko machine in a state of being accommodated in a substrate case molded of a transparent resin material so that the state can be visually inspected from the outside. In addition, the substrate case of the main control board 30 or the payout control board 40 is provided with an easy-to-recognize unauthorized opening prevention mechanism 50 including a plurality of lock mechanisms having a structure in which the case cannot be opened unless a part of the board case is broken. Is provided.

  Here, the configuration of the substrate case that accommodates and holds the control substrates 30 and 40 and the configuration of the unauthorized opening prevention mechanism 50 provided in the substrate case are disclosed in detail in Patent Documents 1 and 2 by the present applicant. It is already known. Therefore, although detailed description thereof is omitted in the present specification, the substrate case 31 and the unauthorized opening prevention mechanism 50 will be briefly described by taking the main control substrate 30 as an example for easy understanding of the following description.

  As shown in FIG. 4, the substrate case (a) in a closed state and the substrate case (b) in a state in which a part (connecting portion) of the closed case is cut and opened are shown in FIG. Broadly speaking, the main control board is composed of a case main body member 31B and a case lid member 31C, and is pivotably pivotable at a hinge portion provided on the left end side of each other and fixed to the case lid member 31C with screws. 30 is accommodated and held inside the case in the closed position. The unauthorized opening prevention mechanism 50 includes a plurality of (four locations in the drawing) lock mechanisms, and each lock mechanism includes a main body side engaging portion 51b and a lid provided at the right ends of the case main body member 31B and the case cover member 31C. A side engaging portion 51c and a connecting member 52 mounted between the side engaging portion 51c in the locking direction and the unlocking direction are included.

  When the connection member 52 is mounted in the locking direction on one body side engaging portion 51b (the lowermost body side engaging portion at the time of factory shipment) and the substrate case is closed, the connection member 52 is locked. The claws are expanded and fitted inside the main body side engaging portion 51b and the lid side engaging portion 51c to connect and fix the case main body member 31B and the case lid member 31C, and the substrate case 31 is held in the closed state. In this closed state, the substrate case cannot be opened unless the thin connecting portion 53 that connects the case lid member and the lid-side engaging portion 51c is cut with a nipper or the like. It has become. When the connecting member 52 is mounted in the unlocking direction, the lock claw of the connecting member 52 is elastically held without being fitted inside the main body side engaging portion 51b and the lid side engaging portion 51c. .

  In the pachinko machine PM, in addition to the unauthorized opening prevention mechanism 50, a fraud prevention apparatus using fluorescence of a fluorescent dye is provided. FIG. 1 shows a block diagram of the fraud prevention apparatus 100, and FIG. 5 shows the basic configuration of the light source device and the photodetector in the fraud prevention apparatus 100. The fraud prevention device 100 includes a light source device 110 that irradiates the substrate case 31 (case body member 31B) with excitation light that excites the fluorescent dye while forming the substrate case 31 from a transparent resin material to which a predetermined fluorescent dye is added. The photo detector 120 detects fluorescence in the substrate case 31, and a control unit 150 that emits excitation light to the light source device 110 and performs control based on a detection signal input from the photo detector 120.

Here, “fluorescence” will be briefly explained. This phenomenon is caused by the fact that a molecule that has been excited electronically (excited singlet state (S ₁ )) by absorbing light energy by irradiation with excitation light is non-radiative. This is a phenomenon in which the energy difference is emitted as light in the process of transition to the electron ground state (S ₀ ) after falling to the lowest energy level in the excited state due to decay, and from the excited singlet state (S ₁ ) It is distinguished from phosphorescence emitted in the process of transition to the electronic ground state (S ₀ ) through the excited triplet state (T ₁ ) due to deflection. Various molecules that generate fluorescence are known. For example, fluorescent dyes such as rhodamine B, pyranine, fluorescein, and quinine are widely used for fluorescence spectroscopic analysis and pathological immunostaining.

  In the fraud prevention apparatus 100, at least one of these known fluorescent dyes is added to a transparent resin material, for example, a resin material such as ABS or polycarbonate (PC), and the substrate case is formed by a molding means such as injection molding. 31 (case body member 31B) is integrally formed, and the appearance in appearance is the same as that of a conventional substrate case to which these pigments are not added.

  The light source device 110 is an excitation source for exciting the doped fluorescent dye by irradiating the substrate case 31 with excitation light. As understood from the fluorescence emission mechanism, the fluorescent dye has an absorption spectrum band with high excitation efficiency in a certain wavelength range. For example, rhodamine B that emits red (orange) fluorescence has a wavelength of 500 to 570 nm. Fluorescein that emits green fluorescence has an absorption spectrum band in each wavelength band of about 390 to 440 nm for perylene that emits blue fluorescence.

  And if excitation light contains the wavelength of the said absorption spectrum zone | band, a fluorescent pigment | dye can be excited and fluorescence can be produced. For this reason, the light source device 110 as the excitation source may be any device that can irradiate light including the absorption spectrum band of the fluorescent dye, and is a broadband light source including the visible light region to the ultraviolet region, such as a metal halide lamp or a cold cathode. A tube or the like, or a lamp in the visible light region and a lamp in the ultraviolet region can be provided side by side.

  The photodetector 120 detects fluorescence in the substrate case 31 irradiated with excitation light from the light source device 110. Due to the mechanism of fluorescence, the fluorescence emission spectrum is longer than the wavelength of the excitation light, and each fluorescent dye is in the visible light region as described above. Accordingly, the photodetector only needs to be able to detect light in the visible light region including the emission spectrum band of the fluorescent dye, and can be configured using, for example, a photodiode, a phototransistor, a CCD, or the like.

  Here, when the light source device 110 and the light detector 120 having a wide spectrum band are used as described above, if the light detector 120 is arranged on the reflection optical axis of the excitation light, the reflection from the substrate case 31 is performed. Can be affected by light. On the other hand, since the fluorescence is generated by the transition of the excited state of the molecule, the light emitted by the fluorescence becomes diffused light from the back of the substrate case. 5, the incident angle α of the excitation light incident on the substrate case 31 from the light source device 110 and the angle β formed by the detection optical axis of the photodetector 120 with respect to the normal B of the substrate case 31 Are arranged at different angles (the optical axis of the photodetector is removed from the optical axis of the reflected light and the photodetector 120 is disposed) so that the reflected light from the substrate case 31 does not enter the photodetector 120 directly. Yes. Thereby, the presence or absence of fluorescence can be detected while suppressing erroneous detection due to the reflected light from the substrate case 31.

  The control unit 150 is a control device that performs control based on a detection signal that is emitted from the light detector 120 by causing the light source device 110 to emit excitation light. As shown in FIG. 1, the control unit 150 includes a light source control unit 151, a storage unit 152, a determination unit 154, an alarm output unit 155, and the like. A detection signal is input to the control unit 150 from the photodetector 120.

  The light source control unit 151 is a control unit that controls the operation of the light source device 110, and outputs an operation signal to the light source device 110 at a predetermined inspection timing to emit excitation light from the light source device 110. The storage unit 152 is irradiated with excitation light from the light source device 110 in a state where the appropriate substrate case 31 is attached to the pachinko machine PM, and when the fluorescent light is generated in the irradiated portion of the substrate case 31, the photodetector 120. The value of the detection signal (reference signal value) of the light intensity to be detected in the above has a predetermined width in consideration of the variation in the addition rate of the fluorescent dye, the light intensity variation of the light source device 110, the stability of the light intensity, etc. And stored in advance.

  The determination unit 154 calculates the value of the detection signal input from the photodetector 120 and the reference signal value preset and stored in the storage unit 152 in a state where the operation signal is output from the light source control unit 151 to the light source device 110. Compare. When the detection signal value is within the range of the reference signal value, it is determined that a proper board case is attached and is normal. On the other hand, if the detection signal value is outside the range of the reference signal value, it is determined that an appropriate substrate case is not attached and there is an abnormality. The alarm output unit 155 does not output an alarm signal when the determination unit 154 determines normal, and operates the pachinko machine PM as usual. On the other hand, when the determination unit 154 determines that there is an abnormality, an alarm signal is output to activate the alarm.

  There are various types of alarm operations. For example, the lighting device 15 of the pachinko machine PM blinks or the image display device 12 provided in the center of the game board 10 is warned! An alarm that visually notifies the user of an abnormality, such as reversing the characters or graphics, and an audible abnormality that generates an alarm sound from the sound effect generating speaker 16 provided in the pachinko machine PM. At least one of the alarm operations is performed among the alarm operation and the alarm operation for preventing the execution of the game and notifying the abnormality by restricting the operation of the game ball launching device 22 or the ball payout device 22 of the pachinko machine PM. The alarm output unit 155 outputs an alarm signal to the external output terminal of the terminal board 47. In amusement facilities, this alarm signal is used to cause visual and auditory alarms to operate on lamps and speakers provided on the game island, and similar to lamps, speakers, hall computers, etc. provided in the management facility of the gaming facility. Can be activated.

  In the fraud prevention apparatus 100 having such a configuration, the light source control unit 151 outputs an operation signal to the light source device 110 at a predetermined inspection timing to emit excitation light from the light source device 110, and the determination unit 154 includes the photodetector 120. Is compared with the reference signal value set and stored in the storage unit 152 to determine whether or not the detection signal value is within the range of the reference signal value. When the determination unit 154 determines that the detection signal value is within the range of the reference signal value, that is, when fluorescence of a predetermined intensity is detected in the substrate case 31, the alarm output unit 155 outputs an alarm signal. The pachinko machine PM is operated as usual without any problems. On the other hand, if the detection signal value is outside the range of the reference signal value, that is, if fluorescence of a predetermined intensity is not detected, it is determined that an appropriate board case is not mounted (there is an abnormality) and an alarm is issued. The output unit 155 outputs an alarm signal to cause the alarm operation as described above.

  For this reason, the game facility staff can determine whether or not an appropriate main control board is installed depending on whether or not an alarm is activated. Even against this, it is possible to reliably detect such fraud.

  The “predetermined inspection timing” can be set in various ways. For example, when the main power switch is turned on in the power supply board 46 and an activation signal is input from the power supply board 46 (a certain delay time). Can be set as the inspection timing. The main control board 30 is replaced by temporarily turning off the main power switch between the terminals of the connector in order to prevent a short circuit due to the attachment / detachment of the connector cable connected to the board and damage to the semiconductor element mounted on the main control board. It must be done with no potential difference. According to the setting that the inspection timing is set when the pachinko machine is started, an alarm is activated when the pachinko machine PM is started after the main control board 30 is replaced with an illegally modified board by the unauthorized person. . For this reason, not only when unauthorized modification is performed during the business hours of the game facility, but also when the game facility staff is not at midnight, immediately after starting the pachinko machine, that is, the pachinko machine However, it is possible to detect that there is an abnormality before the game is played on the main control board that has been illegally modified yet, and it is possible to prevent the occurrence of damage based on illegal activities.

  The predetermined inspection timing can also be set when the front frame 2 is closed by the outer frame 1 from the detection signal of the open / close detector 9 provided on the front frame 2 of the pachinko machine. In order to replace the main control board 30, the front frame 2 must be opened with respect to the outer frame 1 fixed to the game island, and the game is performed with the front frame 2 closed and locked to the outer frame 1. Is called. According to the setting in which the inspection timing is set when the front frame 2 is closed, an alarm is activated when the front frame 2 is closed after the main control board 30 is replaced with an illegally modified article together with the board case 31 by an unauthorized person. The For this reason, for example, when a clerk at a gaming facility opens the front frame 2 and is exchanged for a fraudulent modification when the seat is removed by calling or the like, or a fraudster secretly opens the front frame 2 Even if it is replaced with an illegally modified product, an alarm is activated when the front frame 2 is closed. Therefore, the clerk of the game facility can detect that there is an abnormality immediately after the front frame 2 is closed, that is, before it is used for the game on the illegally modified main control board 30, and the damage caused by the illegal act Can be prevented in advance.

  In the above, the light source device 110 and the light detector 120 are both configured using the light source and the light detector having a broad spectrum as they are. However, hereinafter, the light source device and the light detection with improved detection accuracy are shown. The configuration of the vessel will be described. FIG. 6 shows a configuration of a light source device 110 ′ according to another embodiment. The light source device 110 ′ includes a light source 111 that emits excitation light and a lens 112 that collects excitation light emitted from the light source. Is done.

  In the light source device 110 ′ having this configuration, the excitation light emitted from the light source 111 is collected by the lens 112 and irradiated onto the substrate case 31. When the addition rate of the fluorescent dye with respect to the substrate case 31 is constant, the fluorescence emission intensity is proportional to the light intensity of the excitation light until reaching the saturation intensity. Therefore, the emission intensity (luminance) of the fluorescence can be increased by condensing the excitation light to a constant spot diameter by the lens 112 and increasing the power density of the excitation light applied to the substrate case 31. Therefore, according to such a configuration, the S / N ratio can be improved by increasing the emission intensity of the fluorescence detected by the photodetector 120, and the detection accuracy of the fraud prevention device 100 can be improved. Can do.

  In the light source device 110 ′, the light source 111 can use a broadband lamp or the like similar to the light source device 110 described above, but selectively uses light in the absorption spectrum band of the fluorescent dye added to the substrate case 31. It can comprise using the light source to radiate | emit. Specifically, when rhodamine B is selected as the fluorescent dye, a yellow-green wavelength selective LED or a wavelength selective fluorescent tube having a light emission distribution in the wavelength band of 510 to 560 nm is used, and fluorescein is selected as the fluorescent dye. In this case, when a blue wavelength selective LED or a near-ultraviolet UV lamp having a light emission distribution at 470 to 500 nm centering on 490 nm is used and perylene is added as a fluorescent dye, the light emission distribution is at 390 to 410 nm. An ultraviolet lamp in the ultraviolet region (ultraviolet lamp) is used. If a light source having an emission wavelength corresponding to the absorption spectrum of the fluorescent dye is used, the excitation efficiency of the fluorescent dye added to the substrate case 31 can be increased, and the detection accuracy by the fraud prevention apparatus 100 can be further improved. Can do.

  Next, FIG. 7 shows still another configuration example of the light source device 110 ″ and the photodetector 120 ′. This light source device 110 includes the light source 111 and the lens 112 similar to those described above, and an outlet portion of the light source device. In addition, a band pass filter 113 that transmits light in the absorption spectrum band of the fluorescent dye and blocks light in the emission spectrum band of the fluorescent dye is provided. The component light in the emission spectrum band of the fluorescent dye is removed from the excitation light generated, and the light in the absorption spectrum band of the fluorescent dye is selectively emitted, so that the substrate case 31 and peripheral components (the substrate surface of the main control board 30) Occurrence of erroneous detection due to reflected light and diffused light from a mounted component or the like), and thereby detection accuracy of fraud can be increased. 3 can be used not only with a light source of a specific wavelength, but also with a relatively inexpensive light source such as a broadband white light source or a near-ultraviolet lamp including the visible light region. By selectively using the band-pass filter 113 for the wavelength band, it is possible to easily configure an anti-fraud device corresponding to the fluorescent dye. For example, even when the fluorescent dye added to the substrate case is changed, The bandpass filter 113 may be changed, and the light source 111 can be shared.

  The photodetector 120 ′ includes a photodetector element 121, a lens 122, and a band pass filter 123. As the light detection element 121, a detection element capable of detecting light in the wavelength band transmitted through the band-pass filter 123 can be used. For example, a general detector in the visible light region such as the above-described photodetector, phototransistor, or CCD is used. be able to. The lens 122 is a condensing lens that condenses the light incident on the photodetector from the substrate case 31 onto the light detection element 121, thereby reducing the diameter of the light incident on the light detection element 121 and reducing the power density. Thus, fluorescence can be detected with high speed and high accuracy by a small detection element. In the photodetector 120 ′, a band-pass filter that selectively transmits only light in the emission wavelength band due to fluorescence is provided in the incident portion, and light in the spectral band other than fluorescence is blocked. That is, the light detector 120 'selectively detects light having an emission wavelength due to the fluorescence of the fluorescent dye.

  According to such a configuration, even if reflected light and diffused light from the substrate case 31 and peripheral components (such as the substrate surface of the main control board 30 and mounting components) are incident on the photodetector 120 ′, this detector The component light other than fluorescence is blocked by the band-pass filter 123 provided at the entrance of the fluorescent light, and only the light of the emission spectrum component of the fluorescent dye is condensed and detected by the lens 122 on the light detection element 121. Accordingly, the fluorescence generated in the regular substrate case 31 can be detected at high speed and with high accuracy, and the influence of the external light around the photodetector and the seal that reflects or diffuses the excitation light is attached to the modified substrate case. It is possible to obtain a high-accuracy fraud prevention device that further prevents fraudulent acts that are detected by a photodetector and camouflaged so that there is no abnormality, thereby further improving the fraud detection accuracy. In addition, since the fraud prevention device corresponding to the fluorescent dye can be easily configured by selectively using the bandpass filter 123 of the wavelength band corresponding to the fluorescent dye, the fluorescent dye added to the substrate case is changed. Even in this case, the band-pass filter 123 may be changed according to this, and the photodetecting element 121 can be shared.

  In addition, it is preferable to change the fluorescent dye added to the substrate case 31 at an appropriate interval in order to prevent illegal acts. For example, with respect to the substrate case 31 having the same appearance, the fluorescent dye added to the substrate case 31 is changed at appropriate intervals such as the model, version, production lot, or production month of the pachinko machine PM. In the case where the detector is provided with the bandpass filters 113 and 123, the fraud prevention apparatus 100 is configured by changing these bandpass filters 113 and 123 in accordance with the change of the fluorescent dye. According to such a configuration, not only a fraudulent modification product to which no fluorescent dye is added, but also a fraudulent person obtains a substrate case to which a fluorescent dye is added, even if a fraudulent person obtains a substrate case of a different fluorescent dye, As a result, the detection accuracy of fraud can be maintained. In addition, by applying such a configuration, even if the substrate case to which the fluorescent dye is added can be duplicated, the probability of detecting fraud is increased, so that the deterrent effect by the fraud prevention device 100 is synergistically increased. Can do.

  In the embodiment described above, the example in which the fraud prevention device according to the present invention is applied to the main control board 30 of the pachinko machine PM has been described. However, the present invention is not limited to the image control board 35, the payout control board 40, and the like. The same effect can be applied to other control boards and control boards attached to other game machines of different types, such as arrange ball machines, sparrow ball game machines, slot machines, and the like.

It is a block diagram which shows the structure of the fraud prevention apparatus which concerns on this invention. It is a front view of the pachinko machine shown as an example of the gaming machine to which the present invention is applied. It is a rear view of the pachinko machine. It is a perspective view which illustrates the substrate case (a) of the closed state about the substrate case of the control board to which the present invention is applied, and the substrate case (b) of the opened state. It is explanatory drawing which shows the basic composition of the light source device and photodetector in the fraud prevention apparatus which concerns on this invention. It is explanatory drawing which shows the other structural example of the said light source device. It is explanatory drawing which shows the further another structural example of the said light source device and a photodetector.

Explanation of symbols

PM Pachinko machine (game machine)
2 Front frame (door-shaped member)
9 Open / close detector 12 Image display device (alarm means)
15 Lighting equipment (alarm means)
16 Speaker (alarm means)
30 Main Control Board 31 Board Case 100 Fraud Prevention Device 110, 110 ′, 110 ″ Light Source Device 111 Light Source 112 Lens 113 Band Pass Filter 120, 120 ′ Photodetector 121 Photodetector Element 122 Lens 123 Bandpass Filter 150 Control Unit 151 Light source control unit 152 Storage unit 154 Determination unit (determination means)
155 Alarm output section (alarm means)

Claims (6)

A gaming machine fraud prevention device comprising a control board for controlling the operation of a gaming machine, and a board case that is formed of a transparent resin material and accommodates and holds the control board and is attached to the gaming machine,
While forming the substrate case with a transparent resin material to which a fluorescent dye is added,
A light source device for irradiating the substrate case with excitation light for exciting the fluorescent dye;
A photodetector for detecting fluorescence in the substrate case irradiated with the excitation light;
Determining means for irradiating the excitation light from the light source device toward the substrate case, and determining whether fluorescence corresponding to the irradiation is detected by the photodetector;
An apparatus for preventing fraudulent acts of a gaming machine, comprising: alarm means that activates an alarm when it is determined by the determining means that fluorescence corresponding to the irradiation is not detected.   2. The gaming machine fraud prevention apparatus according to claim 1, wherein the judging means is configured to make the judgment when the gaming machine is activated. The control board is attached to the inside of the gaming machine body having a door-like member that can be opened and closed and an open / close detector that detects an open / closed state of the door-like member,
The gaming machine according to claim 1 or 2, wherein the judging means is configured to make the judgment when the opening / closing detector detects that the door-like member is closed. apparatus.   The said photodetector is comprised so that the light of the light emission wavelength by the fluorescence of the said fluorescent pigment added to the said substrate case may be selectively detected, The Claim 1 characterized by the above-mentioned. Device for preventing illegal acts of gaming machines as described in 1.   5. The light source device according to claim 1, wherein the light source device is configured to selectively emit light having a wavelength in an absorption spectrum band of the fluorescent dye added to the substrate case. 6. Device for preventing illegal acts of gaming machines as described in 1.   The light source device includes a band-pass filter that transmits light having a wavelength in the absorption spectrum band of the fluorescent dye added to the substrate case and blocks light having a wavelength in the emission spectrum band of the fluorescent dye. The gaming machine fraud prevention apparatus according to claim 5.

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