JP3703688B2 - Pachinko machine protection circuit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a protection circuit of a pachinko machine used to protect not only components such as lamps and solenoids provided in the pachinko machine, but also electrical circuits that drive these components.
[0002]
[Prior art]
Pachinko machines are made up of a wide variety of components, and in recent years, models with a winning device called a so-called accessory tend to dominate. When the predetermined condition is satisfied, this accessory is configured to change the flow of pachinko balls, and thus change the entire pachinko game, by performing an operation different from that in the normal game.
[0003]
In general, the accessory uses a solenoid as a power source as the above-described constituent member, and the operation of the accessory is controlled by inputting a pulse signal to the solenoid and repeating excitation and demagnetization as appropriate according to the input timing.
[0004]
In addition, there are models that generate sound effects to display that when driving an accessory, and at the same time, by turning on or blinking indicators consisting of lamps etc. as components above in various places of the pachinko machine, In addition to stimuli to the auditory sense by sound, stimuli are given to the visual sense by the light of the display.
[0005]
As a result, the components of the pachinko machine further increase game change through hearing and vision.
[0006]
By the way, the component members of the pachinko machine including the above-mentioned accessory attract the player's attention and keep the game motivation good by intricately intertwining the minute operations between the component members. .
[0007]
Next, constituent members of a conventional pachinko machine will be described below with reference to the case of the lamps L1 and L2 shown in FIGS.
[0008]
In FIG. 4, the resistor R1 is connected in parallel to the transistor Tr1 in the output stage, and the lamp L1 is connected in series to one end thereof. In the lamps used in pachinko machines, filaments when the lamp is turned off are mainly used for models whose resistance value is reduced to about one-tenth of that when the lamp is turned on. It is necessary not to flow.
[0009]
Therefore, a slight current depending on the resistance value of the resistor R1 is flowed at the time of extinguishing, and the filament is heated weakly, thereby suppressing a decrease in the resistance value of the filament and suppressing an excessive flow of the starting current at the time of lighting. .
[0010]
In the conventional example shown in FIG. 5, the transistor Tr2, the resistor R2, and the lamp L2 are connected in series to limit the flow rate of the instantaneous current.
[0011]
[Problems to be solved by the invention]
However, in the electric circuit of FIG. 4, since the current always flows through the filament regardless of whether the lamp L1 is turned on or off, not only the lamp life is shortened but also the power consumption when the number of lamps and the number of pachinko machines are large. This leads to an economic problem of enormous amounts.
[0012]
In addition, it is necessary to select a resistor having a relatively high resistance value, and experimental data must be taken for the selection. Therefore, labor and time are consumed, making it difficult to shorten the development time. Furthermore, when the lamp L1 is short-circuited, almost no current flows through the resistor R1, so an overcurrent flows through the transistor Tr1 and causes the transistor Tr1 to be destroyed.
[0013]
On the other hand, in the electric circuit shown in FIG. 5, it is desirable to reduce the resistance value of the resistor R2 in order to suppress the influence on the brightness of the lamp L2, but the resistor R2 hinders the improvement of the efficiency of the circuit. . In addition, in order to set the resistance value of the resistor R2 to an appropriate value, experimental data is required in the same manner as described above, which makes it difficult to shorten the development time.
[0014]
Further, the constituent members of the pachinko machine are not repeated in a monotonous operation during the game, and in recent years, there is a tendency that ON-OFF is repeatedly controlled intensively in a relatively short time if it is finely controlled. For this reason, the constituent members are liable to be destroyed not only in the main body but also in the driver circuit.
[0015]
The present invention has been made in view of the circumstances described above, it is possible to prevent overcurrent breakdown of the components and the driver circuit of the pachinko machine, and the thermal destruction due to overcurrent can be prevented in Rupa penis machine An object is to provide a protection circuit.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is for detecting at least one of voltage and current of power supplied to a component from a power supply source for supplying drive power to the component of a pachinko machine. A detection circuit, a supply stop circuit that takes one of a state of supplying power to the component and a state of stopping the supply of power, and a detection value detected by the detection circuit from a predetermined allowable range A chopping timer circuit that starts measurement of a predetermined time when it is off, and inputs a signal for interrupting the supply of power at a predetermined period during the measurement of the time, and the supply stop When the temperature of the circuit is overheated from a predetermined allowable range, the overheat detection circuit detects the overheat state and inputs an overheat detection signal to the supply stop circuit. The provided, the supply stop circuit is characterized by stopping the supply of power to the components by an input of said overheat signal.
[0017]
According to the above configuration, the component member is driven by the power supplied from the power supply source by the supply stop circuit, while the detection circuit detects whether the power is an appropriate voltage or current, and the detection. When the value is appropriate, the driving of the component is continued, and when the detected value is out of the allowable range, the supply of power to the component is interrupted at a predetermined cycle by inputting a predetermined signal to the supply stop circuit. . Further, when the temperature of the supply stop circuit is overheated from the allowable range beyond the upper limit, the supply of electric power to the constituent members is stopped by inputting an overheat detection signal to the supply stop circuit.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a protection circuit for a pachinko machine according to the present invention will be described below with reference to FIGS.
1 is a protection circuit (hereinafter abbreviated as a protection circuit) of the pachinko machine of the present invention provided in the pachinko machine 1 shown in FIG. 2, and the protection circuit indicated by 2 is a power supply source not shown. It is connected.
[0019]
The protection circuit 2 is formed by an integrated circuit mainly including a detection circuit 3 indicated by a virtual line, a supply stop circuit 4 and a chopping timer circuit 5 also indicated by a virtual line, and includes a gate terminal G, a drain terminal D, and a source terminal S. Has a three-terminal structure.
[0020]
By forming the integrated circuit in this way, the protection circuit 2 can be easily handled and the mounting area on the substrate or the like can be reduced as compared with the case where the protective circuit 2 is configured by individual components.
[0021]
2, the protection circuit 2 includes constituent members of the pachinko machine 1 including a display unit indicated by reference numerals 6 and 7 in FIG. 2, a decorative lamp, a solenoid not shown, and the like, and driver circuits of the constituent members (illustrated). Both are electrically protected. The solenoid is provided at a special winning opening indicated by reference numeral 8 in FIG.
[0022]
In these components, a bias current is supplied from a control circuit (not shown) to the gate terminal G during normal gaming, the lamps 6 and 7 are turned off, and the solenoid is demagnetized. As a result, the special winning opening 8 is closed, and the pachinko ball does not win the special winning opening 8.
[0023]
On the other hand, when a predetermined condition is satisfied according to the progress of the game, a drive signal for driving the constituent member is input to the gate terminal G of the protection circuit 2 from the control circuit.
[0024]
When this drive signal is input to the gate terminal G, the drive signal flows to the gate terminal g of the FET 12 to be described later of the supply circuit 4 via the input protection circuit 13 and the resistor R, and the drain terminal d and source terminal of the FET 12 are supplied. The interval between s is closed.
[0025]
For this reason, between the source terminal S and the drain terminal D of the protection circuit 2 will be in an ON state, and an electric current will flow into the said structural member.
[0026]
The lamps 6 and 7 are turned on, while the solenoid is in an excited state. As a result, the large winning opening 8 in the closed state is opened to facilitate the winning of the pachinko ball, so that a right advantageous to the player is generated.
[0027]
Returning to FIG. 1, the detection circuit 3 of the protection circuit 2 includes an overcurrent detection circuit 9 and an overvoltage detection circuit 10. The detection circuit 3 constantly detects (or measures) the current value and voltage value of the electric power supplied to the constituent members.
[0028]
The overvoltage detection circuit 10 is for detecting an overvoltage such as a surge voltage. When an overvoltage is detected, a voltage is applied between a g terminal and a source terminal s of the FET 12 to be described later to turn the FET 12 on. The overvoltage applied between the drain terminal d and the source terminal s is reduced, and the FET 12 is protected from the overvoltage.
[0029]
In the present embodiment, the detection circuit 3 detects both the current and voltage detection values. However, the detection circuit 3 detects only one of the current and voltage detection values, for example, only the current value. You may comprise.
[0030]
The supply stop circuit 4 takes either one of a state in which power is supplied from the power supply source to the structural member and a state in which the supply of power is stopped, and an open / close circuit 11 and a power MOS FET (hereinafter referred to as FET) 12 It is composed of
[0031]
The switching circuit 11 is connected between the gate terminal g and the source terminal s of the FET 12, and the FET 12 opens and closes between the drain terminal d and the source terminal s in accordance with a drive signal to be described later input from the switching circuit 11 to the gate terminal g. To do.
[0032]
Thereby, the supply stop circuit 4 can take one of two states, that is, a state in which power is supplied to the above-described components and a state in which the supply of power is stopped.
[0033]
The overcurrent detection circuit 9 is connected between the drain terminal d, the gate terminal g, and the source terminal s of the FET 12, and the overvoltage detection circuit 10 is connected between the source terminal s and the drain terminal d of the FET 12.
[0034]
As a result, the FET 12 supplies power between the drain terminal d and the source terminal s, and further between the drain terminal D and the source terminal S based on the presence / absence of a signal input from the gate terminal G to the gate terminal g. Make it intermittent.
[0035]
Further, the gate terminal g of the FET 12 and the gate terminal G of the protection circuit 2 are connected via a resistor R and an input protection circuit 13. The resistor R and the input protection circuit 13 protect the protection circuit 2 from input to the gate terminal G (described later).
[0036]
When the current detection value by the overcurrent detection circuit 9 deviates from a predetermined allowable range, the overcurrent detection circuit 9 detects the current exceeding the upper limit of the allowable range in this embodiment. An overcurrent detection signal is input to the chopping timer circuit 5 assuming that an abnormality has occurred.
[0037]
The chopping timer circuit 5 starts measuring the predetermined chopper time simultaneously with the input of the overcurrent detection signal, and simultaneously with the measurement of the chopper time, the chopping timer circuit 5 generates the chopper signal C and is measuring the chopper time. Then, the generation of the chopper signal C is continued (see later-described FIG. 3).
[0038]
The chopper signal C described above is for interrupting the supply of power at a predetermined cycle (for example, several hundred μsec), and the chopping timer circuit 5 inputs the generated chopper signal C to the open / close circuit 11 of the supply stop circuit 4.
[0039]
Subsequently, the opening / closing circuit 11 inputs an opening / closing signal for opening / closing between the source terminal s and the drain terminal d of the FET 12 at the same period as the chopper signal C based on the period of the chopper signal C to the gate terminal g.
[0040]
As a result, the source terminal S and the drain terminal D of the protection circuit 2 are opened / closed at the same cycle as the chopper signal C, and the supply of power is interrupted from the drain terminal D through the source terminal S to the above-described components at a predetermined cycle.
[0041]
Further, a setting member 14 may be provided as shown by the dotted line in FIG. The setting member 14 is provided in the chopping timer circuit 5 and includes terminals T1 and T2 extending from the chopping timer circuit 5 and a resistor r.
[0042]
The resistor r is for setting the chopper time. The chopper time depends on the resistance value of the resistor r, and the resistance value is arbitrarily set in accordance with the type and specification of the constituent member.
[0043]
When the specification of the resistor r is determined, the resistor r is connected between the terminals T1 and T2 by soldering. If the resistor r is connected to the terminals T1 and T2 via means such as a detachable socket instead of being connected by soldering, an arbitrary chopper time can be easily set.
[0044]
In the present embodiment, the configuration in which the chopper time is set depending on the resistance value of the resistor r has been described. However, the present invention is not limited to this. You may comprise so that chopper time may be set according to capacity | capacitance increase / decrease.
[0045]
In FIG. 1, 15 is an overheat detection circuit, and the overheat detection circuit 15 is used when the temperature in the protection circuit 2 deviates from a predetermined allowable range due to an abnormality in power supply to the above components. When the upper limit is exceeded, the switching circuit 11 is used to turn the FET 12 off, and when the temperature falls within the allowable range, the FET 12 is turned on or maintained in accordance with the input to the gate terminal G. To do.
[0046]
The overheat detection circuit 15 incorporates a temperature sensor (not shown), and is connected between the source terminal S and the switching circuit 11. The overheat detection circuit 15 detects that the overheat state is abnormal when the peripheral circuit of the source terminal S is out of the allowable temperature range set in advance in the temperature sensor, in other words, exceeds the upper limit. A detection signal is input to the switching circuit 11.
[0047]
When the protection circuit 2 of the present invention configured as described above is used, the drive signal is not generated during normal game, and the supply stop circuit 4 of the protection circuit 2 is in a non-operating state. Electric power is not supplied to the above-described components of the machine 1.
[0048]
When a predetermined condition is satisfied according to the progress of the game, the source terminal S and the drain terminal D of the protection circuit 2 are turned on based on the input of the drive signal to the gate terminal G as described above, and the configuration A current flows through the member.
[0049]
The detection circuit 3 maintains the current game when the detected current value by the overcurrent detection circuit 9 is within the allowable range, while the detected current value by the overcurrent detection circuit 9 exceeds the upper limit of the allowable range. The chopping timer circuit 5 starts measuring the chopper time and continuously generates the chopper signal C during the measurement of the chopper time.
[0050]
In this way, if the detected value of the current by the overcurrent detection circuit 9 is within the allowable range, when the upper limit of the allowable range is exceeded, the chopper signal C is input to the supply stop circuit 4, so the switching circuit 11 gates the switching signal. Input to terminal g.
[0051]
As a result, the supply stop circuit 4 can intermittently supply power to the constituent members at the same cycle as the chopper signal C by opening and closing between the drain terminal d and the source terminal s.
[0052]
For this reason, even if an overcurrent flows through the component member, the power supply based on the chopper signal C can be intermittently interrupted at a predetermined cycle, so that the total power supply amount to the component member and its driver circuit is reduced, In addition to preventing destruction of the above-described structural members and their peripheral circuits due to excessive supply of FET 12, it is possible to prevent destruction of the FET 12 itself.
[0053]
In the lamps 6 and 7, the difference in resistance value between the filament (not shown) when it is turned on and off is about 10 times, so the tendency to become overcurrent is very large.
[0054]
Therefore, the supply of electric power is continued until the detected current value by the overcurrent detection circuit 9 exceeds the upper limit of the allowable range, and when the upper limit is exceeded, the supply of electric power to the above components is interrupted at the same cycle as the chopper signal C. By doing so, the filament of the lamp is preheated.
[0055]
Since the current value of the power supplied to the lamps 6 and 7 is gradually reduced by increasing the resistance value due to the residual heat, the generation of the chopper signal C is stopped when the current value falls to the allowable range, and the lamp 6 , 7 can be switched to normal lighting without damage.
[0056]
Also, if the peripheral circuit of the source terminal S is overheated for some reason, for example, due to a short circuit and exceeds the temperature preset in the temperature sensor of the overheat detection circuit 15, the overheat state is detected and regarded as abnormal, The detection signal is input to the open / close circuit 11, and the FET 12 is turned off to stop the power supply to the above-described components.
[0057]
For this reason, the total amount of power supplied to the component members and the driver circuit is made zero, so that the temperature detected by the temperature sensor of the overheat detection circuit 15 gradually decreases. And when it falls to the temperature range preset by the said temperature sensor, it can transfer to the electric power supply of a normal state.
[0058]
For this reason, destruction of the above-described components, peripheral circuits thereof, and FET 12 itself due to excessive power supply is prevented.
[0059]
When a voltage exceeding a preset allowable value is applied between the drain terminal D and the source terminal S, this is detected by the overvoltage detection circuit 10. Then, the overvoltage detection circuit 10 turns on the FET 12 to prevent destruction of the above components, its peripheral circuits, and the protection circuit 2 itself.
[0060]
【The invention's effect】
Since the present invention is configured as described above, the chopping timer circuit inputs a predetermined signal to the supply stop circuit when the power supplied from the power supply source to the component is out of a predetermined allowable range. Supply is interrupted at predetermined intervals.
[0061]
As a result, excessive power supply to the components can be prevented in advance, so that not only the components but also the peripheral circuits thereof are prevented from being destroyed, thereby extending the lifetime of the components and their peripheral circuits and thus the product. There is an economic effect.
[0062]
Further, when the temperature of the supply stop circuit is overheated from the allowable range beyond the upper limit, the supply of electric power to the constituent members is stopped by inputting an overheat detection signal to the supply stop circuit.
[0063]
According to this, it is possible to prevent thermal destruction of the constituent members and their peripheral circuits due to overcurrent, which has a great economic effect.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of a protection circuit for a pachinko machine according to the present invention.
FIG. 2 is a front view of a pachinko machine to which the circuit shown in FIG. 1 is applied.
FIG. 3 is a diagram showing an operation timing of the circuit shown in FIG.
FIG. 4 is a circuit diagram for preventing overcurrent according to a conventional example.
FIG. 5 is a circuit diagram showing a conventional example different from FIG. 4;
[Explanation of symbols]
2 Protection circuit 3 Detection circuit 4 Supply stop circuit 5 Chopping timer circuit 6, 7 Lamp
12 FET
14 Setting material
15 Overheat detection circuit

Claims (1)

A detection circuit for detecting a voltage and / or current of power supplied to the component from a power supply source for supplying driving power to the component of the pachinko machine, and supplying power to the component A supply stop circuit that takes one of a state of stopping and a state of stopping the supply of power, and a predetermined time when the detection value detected by the detection circuit is out of a predetermined allowable range . A chopping timer circuit for inputting a signal for starting and stopping the supply of power at a predetermined period to the supply stop circuit during measurement of the time, and the temperature of the supply stop circuit from a predetermined allowable range An overheat detection circuit that detects an overheat state when an overheat is exceeded and inputs an overheat detection signal to the supply stop circuit, and the supply stop circuit includes the overheat detection circuit. Protection circuit of the pachinko machine, characterized in that stops power supply to the components by an input of the detection signal.

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