JP4477327B2 - Game machine - Google Patents

Description

  The present invention relates to a gaming machine capable of notifying that a power interruption has occurred during operation after power is restored.

Conventional gaming machines having this type of power-off notification function have been as follows. That is, after the power to the control circuit for controlling the gaming machine is cut off, the RAM is actually cleared when the power is turned on again together with the erasure (RAM clear) operation of the volatile memory provided in the control circuit. There has been a gaming machine that notifies a display device whether or not it has been broken (see, for example, Patent Document 1).
According to this, it is also notified that the power has been cut off by the display device that notifies the RAM clear.
JP 2001-347032 A (Claims etc.)

However, in the above prior art, after the RAM is cleared and the power is turned on again, the notification is not performed when the power is turned off and the power is turned on again immediately (the RAM is not cleared at this time).
In view of the above, it is conceivable that the above prior art is configured to always notify that the power supply has been interrupted when the power is restored, regardless of the RAM clear.
However, if the power-off notification is simply made when the power is restored, a notification display is performed when the power is restored from the power-off while the gaming machine is operating (during business hours). For this reason, it becomes a hindrance to the game for the player who wants to play with the gaming machine after the notification display. In addition, for the game hall manager side, if the operation of stopping the notification display is performed while the gaming machine is in operation, the game of the player will be temporarily hindered, so it will be postponed. There is a possibility that the notification display (power interruption during operation) may be missed due to being dropped. If the notification display is configured to automatically stop after a certain period of time, the notification display will not interfere with the game, but the game manager may further increase the possibility of missing the notification display.

By the way, it is normally impossible for only a certain gaming machine to turn off the power during the operation of the game room, except when the protection function against the overcurrent or the like of the gaming machine is activated. This is because, in amusement halls, the power of a large number of installed gaming machines is usually turned on once before opening the store, and is usually shut off once after closing. . Therefore, the fact that a certain gaming machine is turned off during operation is considered to be a case where there is an illegal act in a special case.
In other words, in gaming machines, such as pachinko machines, it is illegal to replace the control circuit (main board) that controls the entire pachinko machine, or to replace the harness connected to this control circuit with another device. Actions are often made. When such an illegal act is performed while the amusement hall is in operation, the power supply to the main board of the pachinko machine is almost temporarily cut off.
Therefore, if the game hall manager can know that a certain gaming machine has been turned off during the operation of such a game hall, this kind of fraud can be known. In this case, it is desirable that the game site manager can know the information reliably and at an early point without disturbing the game of the player.

  The present invention has been made in view of the above-mentioned demands. In a game arcade where a large number of gaming machines are installed, it is possible to notify a gaming machine that has been powered off during operation after power is restored. , A gaming machine that does not interfere with the game of the player, and can be surely known at an early stage by the game hall administrator, and can detect illegal acts during the operation of the game hall reliably and early. The purpose is to provide.

In order to achieve the above object, the invention according to claim 1 of the claims includes a control means for performing control related to the amount of payout of the prize medium, and a power supply circuit for supplying power to the control means. the gaming machine comprising: a power-off indicator for informing whether the interruption of the power supply at the first of the power supply after starting to the control means from the power supply circuit within a defined time period has occurred,
Setting the form of a point off switching control of the power supply disconnection indicator in advance, is held, the first and control procedures of subsequent of the point off switching control to supply at the start of the power supply to the control unit from the power supply circuit position is initialized, power-off of the point off the switching control from the initialized control procedure located, actually starting the power supply disconnection indicator in unpowered state not turn off the point with respect to the power-off indicator a display lamp control means, said point off switching control of the power supply disconnection indicator control unit by the oN operation, from the on-operation time, of the said point off switching control running in unpowered state in the on-operation time actually and a power-off confirmation switch to perform in a powered state to a point off the power supply disconnection indicator to the power-off display lamp from the position in accordance with the control procedure And wherein the door.

  The invention according to claim 2 of the claims is the invention according to claim 1, wherein the gaming machine is a pachinko machine, and the pachinko machine is turned on by opening the front door. A door open sensor is provided, the power cutoff confirmation switch is also used as the door open sensor, and the power cutoff indicator lamp is provided on the front side of the front open / close door.

  According to the invention described in claim 1 of the scope of claims, in a game hall where a large number of gaming machines are installed, it is possible to notify a gaming machine that has been powered off during operation after power is restored. . In particular, when the power-off confirmation switch is turned on after the game hall is closed, it is possible for the game hall manager to know it reliably and at an early time without disturbing the game of the player. Therefore, it is particularly useful for reliable and early detection of fraud during the operation of the amusement hall.

According to the invention described in claim 2, when the gaming machine is a pachinko machine having a door opening sensor that is turned on by opening the front opening / closing door, the power disconnection confirmation switch is opened. Since the power cut-off indicator lamp is provided on the front side of the front door, the following effects can be obtained.
In other words, in pachinko amusement halls, it is common for a number of pachinko machines to be arranged in the left-right direction of an area called an island, and after closing the store, before turning off the power, adjusting the nail, etc. In many cases, the front door is opened for each table. In such a case, according to the present invention, with the opening of the front opening / closing door of the pachinko machine, that is, without any special operation, whether or not there was a power interruption for a large number of arranged pachinko machines It is possible to overlook the display of whether or not to display each pachinko machine arrangement at once, and to easily and efficiently detect fraud.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol shows the same or an equivalent part between each figure.
FIG. 1 is a front view showing an outline of an embodiment of a gaming machine according to the present invention, here a pachinko machine, and FIG. 2 is a perspective view showing a state in which the front door is also opened.
In the figure, 1 is a game board of a pachinko machine, 1a is a game board surface (board surface), and a guide path 3 for guiding a game ball (not shown) to the game area 2 is formed on the board surface 1a. The outer rails 4 and 5 are attached in an arc shape. On the inside of the board surface 1a, inside the outer rails 4 and 5 (game area 2), there are various board parts such as a symbol display device 6, a symbol start winning port 7, a normal winning port 8, a large winning port 9, A windmill 10, a decorative indicator lamp 11, and the like are provided.
The large winning opening 9 is configured such that, when opened, the winning opening is significantly larger than the other winning openings 7, 8,.

In addition, an out port 12 into which a game ball that has not won a prize enters is provided at the lowermost part inside the rails 4 and 5 on the board surface 1a, and the parts 6 to 11 and the out port 12 are appropriately avoided. A large number of game nails 13 (only part of which are shown) are driven into the place.
The board surface 1a is covered with the transparent glass plate 14 of the front opening / closing door (glass door) 16 which is mainly composed of the transparent glass plate 14 and a frame 15 holding the transparent glass plate 14 to prevent the game ball from being detached from the game area 2. Is done. The front opening / closing door 16 is supported by a hinge portion 17 so as to freely open and close the panel surface 1a.

  Below the board surface 1a, a tray 18 for a game ball and a handle 19 for launching the game ball are provided. The handle 19 can be driven by a player to activate a game ball launching device (not shown) by driving it and drive a game ball (not shown) in the tray 18 into the game area 2. It is.

  Reference numeral 20 denotes a pachinko machine main body including the game board 1 and the game ball launching device. The main body 20 is supported by the hinge portion 17 in a rectangular frame 21 so as to be opened and closed. Various control circuits including a main control circuit, which will be described later, are attached to the back of the game board 1, and maintenance and inspection of the various control circuits can be performed by opening the main body 20 as shown in the figure. It is possible as well.

  In the present invention, a plurality of power-off indicator lamps LP for notifying whether or not the power-off has occurred after turning on the power to the main control circuit which will be described later are provided on the front side upper part of the frame 15 of the front door 16. Here, five (LP1 to LP5) are juxtaposed in the left-right direction. The power cut-off indicator lamps LP (LP1 to LP5) are also used as door opening indicator lamps that operate as a point indicator lamp by a door opening sensor 22 (see FIG. 2) that is turned on by opening the front opening / closing door 16. The door opening sensor 22 is formed of a push button switch here, and is turned off when the front opening / closing door 16 is closed and turned on when the front opening / closing door 16 is opened by a protrusion 23 provided on the back surface of the front opening / closing door 16.

FIG. 3 is a block diagram showing a main part of the pachinko machine shown in FIGS. 1 and 2.
As can be seen from this figure, the pachinko machine includes a winning ball sensor 31..., A main control circuit 32, a symbol control circuit 33, a sound effect control circuit 34, and an indicator light control circuit 35. Further, a prize winning opening solenoid 36 and a prize ball payout control circuit 37 are also provided. In the figure, reference numeral 30 denotes a power supply circuit that supplies power to the control circuits 32 to 35, 37, and the like.

  The winning ball sensor 31 includes a switch for detecting a winning ball, and is provided in one-to-one correspondence with the winning ports 7 to 9 provided on the board surface 1a shown in FIG. Of these, 31 a is a start winning ball sensor that detects a winning ball to the start winning port 7.

The main control circuit 32 is a circuit that controls the control circuits 33 to 35, 37, the special prize opening operation solenoid 36 and the like (the whole pachinko machine), and includes an input port 32a, a CPU 32b, an output port 32c, a ROM 32d, a RAM 32e, and the like. Prepare.
The ROM 32d stores a pachinko game program read and executed by the CPU 32b, data necessary for executing the program, and the like. The RAM 32e is used as a work area when the above program is executed.

As shown in FIG. 3, winning ball sensors 31... (Including a starting winning ball sensor 31 a) are connected to the main control circuit 32, and the input port 32 a of the main control circuit 32 is connected to the winning ball sensors 31. .. Are received and given to the CPU 32b.
When detecting the winning ball, the CPU 32b outputs a signal to the symbol control circuit 33, the sound effect control circuit 34, the indicator light control circuit 35, the winning ball payout control circuit 37, etc. via the output port 32c, or operates the big winning opening. The solenoid 36 is activated to perform a game process corresponding to the winning.

  The symbol control circuit 33 is a control circuit that causes the symbol display device 6 to display various symbols (images). The sound effect control circuit 34 is a control circuit that generates various sound effects (including synthesized sound) from the speaker 34a. Further, the indicator light control circuit 35 is a control circuit that turns on and off various decorative indicator lights 11 on the panel surface 1a shown in FIG. The special winning opening operating solenoid 36 is a solenoid that is activated during the big hitting operation and opens the special winning opening 9. The prize ball payout control circuit 37 is a control circuit that causes the prize ball device 37a to pay out a prize ball corresponding to a winning prize.

  Here, during the game operation, the main control circuit 32 generates a jackpot-determined random number from a counter (not shown) at a predetermined cycle, and at the time of winning a game ball to the start winning port 7 shown in FIG. The random number value (random value) generated when the sensor 31a detects the starting winning ball is acquired and compared with a preset jackpot value (a jackpot lottery). Then, the main control circuit 32 determines that it is a big hit when the random value matches the big hit value, and performs the big hit processing described below.

  Specifically, when a game ball wins the starting winning opening 7 shown in FIG. 1, the main control circuit 32 receives the signal from the starting winning ball sensor 31a and draws the big hit lottery. At the same time, a winning ball payout signal for paying out a winning ball for winning is output, a symbol change start signal is generated, the symbol display device 6 is controlled via the symbol control circuit 33, and the left of the screen 6a is displayed. In the middle and right display areas LA, CA, and RA, changes in symbols L, C, and R displayed on the display are started.

The three symbols L, C, and R are finally stopped. If the big hit lottery result is a big hit, the symbols L, C, and R at the time of the stop are predetermined types of symbols, for example, “7, 7 , 7 ”are displayed (see FIG. 1).
When the symbol display device 6 displays a big hit symbol (becomes a big hit), the big winning opening 9 is opened, and more winnings, that is, winning balls are achieved.

  In the big hit process, in addition to the opening operation of the special winning opening 9 by the operation of the special winning opening actuating solenoid 36 shown in FIG. 3, various effect operations by the symbol display device 6, the sound effect output device 34a, the decorative indicator lamp 11 and the like ( Image display, sound effect generation, indicator lamp turn-off operation) and prize ball payout operation by the prize ball device 37a.

  As described above, the main control circuit 32 is a control circuit that greatly affects the award medium, in this case, the number of award balls paid out, and is likely to be a target of fraud. That is, all or a part (board) of the main control circuit 32 is replaced with another altered circuit (board), or a harness part (not shown) connected to the main control circuit 32 is replaced with another circuit. For example, it is easy to carry out fraudulent acts such as making it easy to win big hits and paying out many prize balls.

Therefore, in the present invention, in addition to the power-off indicator lamps LP (LP1 to LP5) described above, a power-off indicator light control means 41 and a power-off confirmation switch 42 are provided.
In this case, the power-off indicator lamp control means 41 is a control circuit in which the on / off switching control mode (flashing pattern) of the power-off indicator lamps LP (LP1 to LP5) is set and held in advance.
In this embodiment, when the power-off indicator lamp LP1 is lit for 0.2 seconds, the LP2 is lit for 0.2 seconds, and then LP3 is lit for 0.2 seconds. Then, after LP4 is lit for 0.2 seconds, LP5 is lit for 0.2 seconds. Hereinafter, similarly, a control form is employed in which LP1 to LP5 are repeatedly lit, that is, LP1 to LP5 are lit in a sequential and cyclic manner for 0.2 seconds. Note that the number of power-off indicator lamps LP, the lighting time, and the like are not limited to this example.

  This power-off indicator lamp control means 41 is initialized by an initialization command sent from the main control circuit 32 at the start of power supply from the power supply circuit 30 to the main control circuit 32, usually at the time of power-on operation. This is a control circuit that starts the above-described switching-on / off switching control from the beginning of the control procedure position, specifically from the beginning of the control program, in an unpowered state (without actually turning on / off) the power-off indicator lamp LP.

  The power-off confirmation switch 42 can be turned on when desired, and by this on-operation, the power-off indicator lamps LP (LP1 to LP5) are turned on and off by the power-off indicator lamp control means 41 from that point in a power supply state (actually This is a switch that is turned on and off.

In the example shown in FIG. 3, the power-off indicator lamp control means 41 is built in the indicator lamp control circuit 35. For example, when the indicator light control circuit 35 includes a CPU, a ROM, a RAM, and the like (not shown), and the CPU executes a control program stored in the ROM or the like to turn off the decorative indicator lamp 11. The power-off indicator lamp control means 41 is configured such that its function is described in the control program and executed. In such a case, the on / off switching control mode can be arbitrarily set by describing it as the on / off switching control program section in the control program. The control circuits 33 to 35 use a common CPU, ROM, RAM, and the like (not shown), execute a control program stored in the ROM and the like, and execute the control circuits 33 to 35 (the power-off indicator light control means 41). Including all of the functions).
In the example shown in FIG. 3, the power-off confirmation switch 42 is also used as the door opening sensor 22. As described above, the power-off indicator lamps LP (LP1 to LP5) are also used as the door opening indicator lamp that operates as a point indicator lamp by the door opening sensor 22 that is turned on by opening the front opening / closing door 16 (see FIG. 2). is doing.

Hereinafter, the operation of the power-off indicator lamp control means 41 will be described with reference to FIG. 4. Prior to that, the operation during the power-on operation of the control circuits 32 to 35 and 37 will be described.
Each of the control circuits 32 to 35, 37 is not shown in FIG. 4, but when the power supply from the power supply circuit 30 is turned on before opening the pachinko amusement hall (when the power is turned on: once a day) At the start of power supply. Specifically, the control state is initialized by, for example, clearing 0 in the RAM built in each of the control circuits 32 to 35, 37. The control circuits 33 to 35 and 37 are initialized by an initialization command from the main control circuit 32. Normally, after the store is closed, until the power is turned off (the power is shut off), initialization is not performed for reasons other than the power-on operation before opening the store.
The power-off indicator lamps LP (LP1 to LP5) set and held in the power-off indicator lamp control means 41 in the indicator-light control circuit 35 are similarly turned on and off (flashing pattern). Until the power is turned off, the initialization is not performed for reasons other than the power-on operation before opening the store.

  First, in step 401, the power-off indicator lamp control means 41 determines whether or not an initialization command from the main control circuit 32 has been received. If received, in step 402, the on / off switching control mode (flashing pattern) is determined. Is initialized. The continuous processing from step 401 to step 402 is performed once (once a day) when power supply to the main control circuit 32 is started, usually before the pachinko game hall is opened, and when power is turned on from the power circuit 30. Only done. In addition, a large number of pachinko machines are usually installed in the pachinko amusement hall, but these multiple pachinko machines are performed all at once, for example, in units of islands or in a row.

In step 403, it is determined according to the flashing pattern whether the power-off indicator lamp LP to be lit is LP1 to LP5, and the corresponding power-off indicator lamp LP is turned on. When the power is turned on before the game hall is opened, the blinking pattern is initialized in step 401, so LP1 is selected and lit.
In step 404, it is determined whether or not the lighting time of the power-off indicator lamp LP that has been turned on has reached a specified value, here 0.2 seconds. If so, the next power-off indicator lamp LP, here LP2, is turned on in step 405. If not, jump to step 406.

In step 406, it is determined whether or not the front opening / closing door 16 shown in FIG. 2 is being opened (the door opening sensor 22; the power-off confirmation switch 42 is being turned on). If it is open, after the execution of step 407, if it is not open, the first time (first round) processing is terminated at that point.
In Step 407, from the time of execution of Step 407, the power-off indicator lamp LP is actually started to be turned on, that is, the on / off switching control is started in the power supply state with respect to the power-off indicator lamp LP.
In the description of Steps 403 to 405 before executing Step 407, “lighting” refers to a power-off indicator lamp LP in an unpowered state, that is, an on / off switching control state that is not actually lit. .

Steps 401 to 407 described above are repeated at a predetermined cycle, for example, at an interval of 4 ms, but the determination result of step 401 is NO (no) until the power is shut off after the game hall is closed after the second round. . This is because the initialization command is not transmitted from the main control circuit 32 during this period.
The processing of step 403 and step 405 after the second round follows the blinking pattern set and held in the RAM or the like. That is, in step 403 and step 405 in each round, the power-off indicator lamp LP that is currently turned on is updated and lit according to the blinking pattern (lighting order and cycle of each LP).
As long as step 407 is not executed, “lighting” in steps 403 to 405 in the second and subsequent rounds also indicates the on / off switching control state in which the power-off indicator lamp LP is not actually turned on.

  As described above, in step 407, the power-off indicator lamp LP is actually turned on (LP1 to LP5 are turned on / off) from the time of execution. However, the front opening / closing door 16 is opened after the game hall is closed. Since it is performed before the power is shut off, for adjusting the nail, etc., it is not performed before the game hall is closed, and step 407 is not executed during this time. When step 407 is executed after the game hall is closed, the processing operation continues until the power from the power supply circuit 30 is cut off.

The above operation will be described in the case where the present invention is applied to each pachinko machine in a game arcade where a large number of pachinko machines are installed.
Now, assume that the front opening / closing doors 16 (see FIG. 2) are opened for all or most of the pachinko machines for closing the power supply, before turning off the power, adjusting the nails, etc. after the game hall is closed.
Then, when step 406 of the flowchart shown in FIG. 4 is executed, it is determined that the front opening / closing door 16 is open (YES), and in step 407, the actual power-off indicator LP is turned on (LP1 to LP5 are turned on and off). The
Here, if an illegal act is performed in a pachinko machine, for example, a board on which all or a part of the main control circuit 32 is mounted is replaced with a modified board while the game hall is in operation, the power supply to the main control circuit 32 Supply is temporarily interrupted. Thereafter, the power supply is resumed (power return). In this case, the continuous processing from step 401 to step 402 in the flowchart shown in FIG. 4 is performed. Therefore, the blinking pattern is initialized, and the on / off switching control is started from the first control procedure position, that is, the lighting is started from the power-off indicator lamp LP1. This is because the continuous processing from step 401 to step 402 is performed when power supply from the power supply circuit 30 is started (at the time of power supply start) as described above.

Here, both in the case of the power-on operation ( when starting the first power supply of the day) and when the power is restored (when the power supply is started after the power-on operation, that is, when the power supply is resumed) Since the switching control mode (flashing pattern) itself is common, each of the power-off indicator lights LP1 to LP5 is lit individually and sequentially from LP1 for 0.2 seconds. However, when the flashing pattern is initialized only once at the time of the power-on operation, and when the power supply is temporarily interrupted and then re-initialized (at power recovery), the power-off indicator lamp LP1 is turned on. The starting point is different. Although it is conceivable that the power-off indicator lamp LP that starts to light when the power is restored becomes the same power-off indicator lamp LP as when it was initialized only during the power-on operation, this is a rare case. Even if the same power-off indicator light LP is obtained, each power-off indicator light LP (including LP1) is lit for 0.2 seconds, so it is considered that there is almost no coincidence until the lighting start and end times. .
Therefore, the lighting-off states (lighting sequence, cycle) of the power-off indicator lights LP1 to LP5 of the pachinko machine of a large number of machines to which the present invention is applied (two or more cannot be compared later will be compared) are compared with each other. If you look at it, you can know the gaming machine that was turned off while it was running, here it was cheating. If only one pachinko machine, or only a limited number of pachinko machines, is in a lit-off state different from the majority of other pachinko machines, it is determined that the pachinko machine is a pachinko machine that has been cheated. it can. In other words, it can be determined that an illegal act has been made extremely easily and clearly.
Power-off indicator lights LP1 to LP5 do not turn off during pachinko machines that have been cheated during operation, but are always turned off after the store is closed. In addition, the amusement hall manager can know it reliably and at an early point in time.

Further, according to the above-described embodiment, since the power-off confirmation switch 42 is also used as the door opening sensor 22 and the power-off indicator lamp LP is provided on the front side of the front opening / closing door 16, the power-off is performed for a large number of pachinko machines. The display of whether or not there was can be looked at once for each pachinko machine arrangement, and fraudulent discovery can be easily and efficiently performed.
That is, in the pachinko amusement hall, as described above, it is common that a large number of pachinko machines are arranged in the left-right direction of the area called the island, and after closing the store, before turning off the power, nailing adjustment etc. For this reason, the front doors are often opened for all pachinko machines. In such a case, according to the present embodiment, with the opening of the front opening / closing door of the pachinko machine, that is, without any special operation, the power is cut off for a large number of arranged pachinko machines. The display of whether or not there was can be looked at once for each pachinko machine arrangement, and fraudulent discovery can be easily and efficiently performed.

In the above-described embodiment, the power interruption is mainly used for discovery of fraud. However, it is needless to say that the power interruption may be widely used to determine that the power interruption has occurred.
In addition, applicable game machines are not limited to pachinko machines.
Furthermore, in the above-described embodiment, the door opening sensor 22 (power-off confirmation switch 42) is directly connected to the main control circuit 32, and the ON operation of the door opening sensor 22 is directly given to the main control circuit 32. It is not limited to only. In a system in which the door opening sensor 22 is connected to the prize ball payout control circuit 37 and the door opening information is transmitted to the computer on the game hall manager side together with the prize ball payout information, the on operation of the door opening sensor 22 is determined as an award. You may make it give to the main control circuit 32 via the ball payout control circuit 37.
Further, the power-off indicator lamp control means 41 may be built in the main control circuit 32.

It is a front view which shows the principal part of one Embodiment of the pachinko machine to which this invention was applied. It is a perspective view which shows the pachinko machine same as the above in the state which opened the front door. It is a block diagram which shows the principal part of a pachinko machine same as the above. It is a flowchart for demonstrating operation | movement of the power-off indicator light control means in FIG.

Explanation of symbols

22: Door open sensor, 32: Main control circuit (control means), 30 power supply circuit, 35: Indicator light control circuit, 41: Power interruption indicator light control means, 42: Power interruption confirmation switch, LP (LP1 to LP5): Power-off indicator light.

Claims (2)

In a gaming machine comprising control means for performing control related to the number of payouts of prize media, and a power supply circuit for supplying power to the control means,
A power-off indicator lamp for notifying whether or not the power-off occurred after the first supply of the power from the power supply circuit to the control means within a predetermined period ;
Setting the form of a point off switching control of the power supply disconnection indicator in advance, is held, the first and control procedures of subsequent of the point off switching control to supply at the start of the power supply to the control unit from the power supply circuit position is initialized, power-off of the point off the switching control from the initialized control procedure located, actually starting the power supply disconnection indicator in unpowered state not turn off the point with respect to the power-off indicator Indicator light control means;
The point off switching control of the power supply disconnection indicator control unit by the ON operation, from the on-operation time, according the the control procedure of the point off switching control running in unpowered state in the on-operation time position game machine characterized by comprising a power-off confirmation switch to perform in a powered state to more the actual point off the power supply disconnection indicator against power failure indicator.   2. The gaming machine according to claim 1, wherein the gaming machine is a pachinko machine, the pachinko machine is provided with a door opening sensor that is turned on by an opening operation of the front opening / closing door, and the power-off confirmation switch is configured to open the door. A gaming machine that is also used as a sensor, and a power-off indicator lamp is provided on a front side of the front opening / closing door.

Images