JPH07222824A - Safety device for carbon dioxide fire-extinguishing facility - Google Patents

Abstract

PURPOSE:To prevent an unnecessary start of a fire-extinguishing facility caused by an erroneous manipulation or the like, so as to ensure a safety by providing fire-extinguishing operation limiting means including a timer for limiting transmission of a start instruction signal to a starting device until a predetermined time elapse from the time when a cover of a control box is opened, even though a start control button is operated. CONSTITUTION:A control part 41 for a carbon dioxide fire-extinguishing facility, incorporates fire-extinguishing operation limiting means 46 including a timer 46a for limiting transmission of a start instruction signal to a starting device until a time required for confirming a safety such that a person in a protecting area has escaped, elapses after covers of control boxes 33A, 33B are opened, even though start control buttons located in the control boxes 33A, 33B are depressed, in addition to a delay timer 45, means 47 for informing a depression waiting time for the start control buttons in association with the opening of the covers of the control boxes, and means 48 for informing a start preparation completing condition, that is, the completion of elapse of a time set up on the timer 46a in the fire-extinguishing operation limiting means 46.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a facility for extinguishing a fire by activating a carbon dioxide extinguishing equipment when a fire occurs in the protective compartment and releasing a carbon dioxide extinguishing agent into the protective compartment. For more details, regarding the safety device for carbon dioxide fire extinguishing equipment, which regulates the activation due to an erroneous operation when the equipment is activated by human operation with respect to the activation operation button in the operation box installed in or near the protective compartment. Is.

[0002]

2. Description of the Related Art Generally, in this type of carbon dioxide fire extinguishing equipment, if it is operated unnecessarily due to an erroneous operation such as an operation mistake, it often leads to a personal injury. For example, when a person is inside the protective compartment, a carbon dioxide fire extinguishing system is activated due to an erroneous operation, and a carbon dioxide fire extinguishing agent is released, and when it fills the protective compartment, a fatal accident due to suffocation may occur. Therefore, in carbon dioxide fire extinguishing equipment, it is necessary to strictly consider its safety measures.

Generally, causes of extinguishing agent extinguishing due to non-fire in carbon dioxide extinguishing equipment are (a) generation of pseudo start signal due to disconnection or short circuit of external electric wiring connecting between control unit and operation box, etc. (B) Incorrect operation in the operation box is possible. As measures to prevent accidents caused by the release of fire extinguishing agents due to non-fire, those that have been legislated and have been actually implemented in the past, in addition to (a) above, (1) Ground fault of wiring , If a short circuit is detected, it is determined whether it is a pseudo start signal or a true signal, and if it is a pseudo signal, the start stage is not entered. There is a type in which a shutoff valve is provided between a carbon dioxide container in a fire extinguishing facility and an intervening selection valve in a fire extinguishing agent pipe arranged corresponding to each protection section.

FIG. 5 is a system diagram of carbon dioxide fire extinguishing equipment. In FIG. 5, a plurality of protective sections A and B are provided with extinguishant spray heads 30A and 30B and a fire detector 31, respectively.
A, 31B are provided, and each protection section A,
A start operation button (not shown) for giving a start command to the electric starter 32 inside the vicinity of the outside of B
Further, operation boxes 33A and 33B each having an emergency stop operation button (not shown) for releasing the start command and having an opening / closing door (not shown) are installed. The respective extinguishant jet heads 30A and 30B are provided with a plurality of carbon dioxide containers 36 through the extinguishant pipes 34A and 34B and the common pipe 35.
The fire extinguishing agent pipes 34A, 34B are provided with selection valves 37A, 37B, and a shutoff valve 38 is provided near the outlet of the common pipe 35. Further, the carbon dioxide containers 36 are equipped with openers 39, respectively, which are set in advance in accordance with the sizes (volumes) of the protection zones A and B in response to the activation signal from the activation device 32. A certain number of openers 39 are opened.

On the other hand, a detection signal from the fire detectors 31A and 31B, a start command signal from a start operation button in the operation boxes 33A and 33B, and an emergency stop signal from an emergency stop operation button are received by the receiving unit 40 and then the starter device is provided. A control unit (control panel) 41 for transmitting to 32 is provided. The control unit 41 includes a delay timer (not shown) that outputs a start command signal to the starter 32 after a predetermined time has elapsed after operating the start operation button. When the time is up, the corresponding opening device 39 is opened to release the carbon dioxide extinguishing agent from the extinguishing agent jet heads 30A and 30B of the protection section A or B. In addition, the selection valve 3
Pressure switches 42A and 42B are installed downstream of 7A and 37B, and the pressure due to the extinguishing agent discharged into the protective compartment A or B is detected, and the filling display provided outside the vicinity of each protective compartment A or B. The lamps 43A and 43B are turned on.

[0006] In the carbon dioxide fire extinguishing equipment having the above structure, the fire operation flow when the equipment is manually started is as shown in FIG. In the following description, the flow when a fire occurs in the protection zone A will be described, but the same applies when a fire occurs in another protection zone B. First, find and confirm a fire (step S
1) The person who opens the open / close door of the operation box 33A (step S
2) Along with this, an evacuation warning such as a voice warning is output (step S3). Next, after confirming the evacuation of the personnel in the protected area A, the operation button for activation in the operation box 33A is pressed (step S4), and in conjunction with this, a device such as, for example, a ventilation fan in the protected area A. The information for stopping or moving out is output (step S5).

Simultaneously with the pressing operation of the activation operation button, the delay timer in the control section 41 starts the time counting operation (step S6). If the fire is extinguished or extinguished before the delay timer times out (about 25 seconds), the operation switch for emergency stop in the operation box 33A is pressed. The presence / absence of a pressing operation on the emergency stop operation switch is determined (step S7), and if there is an operation, the process returns to step S1 and the information output for stopping or taking out the device in the protection section A is restored. (Step S8). If the delay timer times out without any operation (step S
9), a start command signal is output from the control unit 41 to the starting device 32, the corresponding opener 39 is opened, and the corresponding selection valve 37A is opened (step S1).
0), the carbon dioxide fire extinguishing agent in the carbon dioxide container 36 is discharged from the head 30A into the protective compartment A through the pipes 35 and 34A (step S11).

At this time, the pressure switch 42A is actuated (step S12), and in response to the pressure detection signal, the filling indicator lamp 43A provided outside the protection section A is turned on to indicate the filled state of the extinguishing agent to the outside. (Step S1
3).

[0009]

By the way, the operation boxes 33A, 33B of the carbon dioxide fire extinguishing equipment can be easily approached and operated by an unspecified number of people in order to respond swiftly when a fire is detected. It is usually installed in a position. Therefore, when it is not a fire, the operation box may be mistaken for the operation box in other equipment, or it may be operated by mischief,
There is a problem that the fire extinguishing equipment will always start even by such an erroneous operation or a mischievous operation. That is, when the opening / closing doors of the operation boxes 33A and 33B are opened and the activation operation button is pressed, the extinguishant is discharged into the protective compartment unless the emergency stop operation button is pressed. In particular, in the case of an erroneous operation or a mischievous operation, since the evacuation warning is output when the door is opened, the feeling is upset, and it is actually difficult to press the emergency stop operation button. As a result, the fire extinguishing agent is likely to be released even though it is not a fire.

As a countermeasure against such an erroneous operation, the above-mentioned means (1) which has been conventionally implemented is completely useless, and the shut-off valve in the means (2) is essentially a control part or an operation box. It is provided to keep the piping closed to prevent the extinguishant from being released during functional tests such as the above, and is kept open at all times to stop the release of the extinguishant due to erroneous operation or mischief. In order to do so, it is necessary to move to the installation location and perform a closing operation, which is more difficult to operate than pressing the emergency stop operation button. Therefore, the conventional measures (1) and (2) cannot be solutions to the above-mentioned erroneous operations and mischievous operations.

The present invention has been made in view of the above circumstances, and provides a safety device for a carbon dioxide fire extinguishing facility capable of ensuring safety by preventing unnecessary activation of the fire extinguishing facility due to erroneous operation or mischief. The purpose is to do.

[0012]

In order to achieve the above object, a safety device for a carbon dioxide fire extinguishing facility according to the invention of claim 1 is installed in or near a protective compartment, and a carbon dioxide fire extinguishing system is provided inside thereof. An operation box with an opening / closing door equipped with a start operation button that gives a start command to the equipment starter and an emergency stop operation button that cancels the start command, and timing from the time of operating the above start operation button Carbon dioxide comprising a control unit including a delay timer for operating the carbon dioxide fire extinguishing equipment so as to release a fire extinguishing agent by transmitting a start command signal to a starter of the carbon dioxide fire extinguishing equipment after a predetermined time has elapsed A safety device for fire extinguishing equipment, wherein the control unit operates the startup operation button until a predetermined time elapses after the opening / closing door of the operation box is opened. Extinguishing operation regulating means including a timer for regulating the transmission of the start command signal to the braking system in which is provided.

The carbon dioxide fire extinguishing equipment safety device having the above construction is provided with an informing means for informing the operation standby time for the activation operation button when the opening / closing door of the operation box is opened, or the fire extinguishing operation regulation. It is desirable to additionally provide an informing means for informing the start ready state in which the timer in the means has timed out.

Further, the safety device of the carbon dioxide fire extinguishing equipment according to the invention of claim 4 is installed in or near the protective compartment, and a start command is given to the inside of the safety equipment of the carbon dioxide fire extinguishing equipment. An operation box with an opening / closing door equipped with a start operation button and an emergency stop operation button for canceling the start command, and the carbon dioxide fire extinguishing equipment after a predetermined time after a timed operation from the time of operating the start operation button. A safety device for carbon dioxide fire extinguishing equipment, comprising a control unit including a delay timer for operating the carbon dioxide fire extinguishing equipment so as to release a fire extinguishing agent by transmitting a start command signal to a starter, the control means being Is for permitting transmission of a start command signal to the starting device when the opening / closing door of the operation box is opened and the operation button for starting is continuously operated for a predetermined time. Extinguishing operation regulating means including Ma in which is provided.

The carbon dioxide fire extinguisher safety device having the above-mentioned structure is provided with a notifying means for notifying the operation continuation time for the starting operation button when the opening / closing door of the operation box is opened, or the fire extinguishing operation regulation. It is desirable to additionally provide an informing means for informing a start-up state in which the timer in the means has timed out.

[0016]

According to the invention of claim 1, when there is no fire,
Even if the operation box of other equipment is mistaken or if the opening / closing door of the operation box is opened by mischief and the operation button for starting inside the operation box is pressed, the operation of the fire extinguishing restriction means including the timer will restrict the operation. , The start command signal is not transmitted to the starter instantaneously, and the start operation button is pressed after the predetermined time required to confirm whether the personnel in the protected area have evacuated. The start command signal is transmitted to the starter. Therefore, it is possible to prevent unnecessary activation of the fire extinguishing equipment due to an erroneous operation or a mischievous operation, and avoid occurrence of a fatal accident or the like due to an unexpected release of carbon dioxide when a person is present in the protected area.

According to the invention of claim 4, similarly to the above, even if the operation button for activation is pressed due to an error or mischief in the operation box, the operation time is set in the timer in the fire extinguishing operation restricting means. The activation command signal is not transmitted to the activation device unless it is continued for a predetermined time or longer. In other words, by prolonging the time length of the operation act of pressing the activation operation button, it is possible to prevent unnecessary activation of fire extinguishing equipment due to erroneous operation or mischievous operation, which is generally an instant or short-time operation, and By confirming whether the person is correct or not, it is possible to avoid the occurrence of a fatal accident or the like due to the unexpected release of carbon dioxide when a person is inside the protected area.

Particularly, in the case of the invention of claim 1, in the case of the invention of claim 4, the operation standby time for the activation operation button is notified, and in the case of the invention of claim 4, the operation continuation time for the activation operation button is informed. When the fire occurs, the operator can be clearly notified of the operation procedure and a predetermined fire extinguishing start can be ensured. Further, in any of the first and fourth aspects of the invention, by notifying the state in which the timer in the fire extinguishing operation regulating means has timed up, that is, the state in which the operation regulation is released, the pressing operation on the activation operation button or By clearly informing the operator of the next action such as release of the pressing operation, it is possible to speed up the prescribed fire extinguishing and speed up the evacuation of the operator himself.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The system diagram of the carbon dioxide fire extinguishing equipment in this embodiment is as shown in FIG. 5, to which speakers 44A and 44B as an informing tool by an informing means described later are added.

FIG. 1 is a block diagram of the carbon dioxide fire extinguishing equipment. In FIG. 1, the same components as those in FIG. 5 are designated by the same reference numerals and the description thereof will be omitted. Here, in addition to the delay timer 45 described above, the control unit 41 has an opening / closing door (not shown) in the operation boxes 33A and 33B.
It is provided in the operation boxes 33A and 33B until the time (about 5 seconds) necessary for confirming the safety due to the evacuation of the personnel in the protective compartments A and B after opening the Fire-extinguishing restricting means 46 including a timer 46a for restricting transmission of a start command signal to the starting device 32 even if the start-up operation button is pressed, and pressing the start-up operation button with opening of the opening / closing door. Notify the operation standby time (about 5 seconds), specifically, a voice message such as "This is a fire extinguishing equipment starter. Please check the situation in the protected area before pressing the start operation button" The informing means 47 for outputting through the speakers 44A and 44B and the timer 46a in the fire extinguishing operation regulating means 46 informs the start preparation completed time, specifically, " Press the button for dynamic operation "
Such as a voice message to the speaker 44A, 44B
And an informing means 48 for re-outputting through. In addition to the speaker that outputs the voice message, the notification tool in each of the notification means 47 and 48 may be an LED or LC.
It may be a super display tool using D.

In the safety device for the carbon dioxide fire extinguishing equipment having the above-mentioned structure, the fire operation flow when the equipment is manually started is as shown in FIG. In the following description, the flow when a fire occurs in the protection zone A will be described, but the same applies when a fire occurs in another protection zone B. First, a person who discovers and confirms a fire (step S20) opens the opening / closing door of the operation box 33A (step S21), and along with this, an evacuation warning such as a voice warning is output (step S22) and an alarm means. Voice message corresponding to pressing operation standby time (about 5 seconds) such as 47 is activated, "This is the activation device for fire extinguishing equipment. Please check the situation in the protected area before pressing the activation operation button" Is output through the speaker 44A (step S23). At the same time, the timer 46a in the fire-extinguishing restriction means 46 starts the time counting operation, and it is determined whether or not a predetermined time (5 seconds) set to a length at which it is possible to confirm that the personnel in the protected area A have evacuated has elapsed. The determination is made (step S24). During this time, even if the activation button is pressed, the activation command signal is not transmitted to the activation device 42 due to the restricting action of the fire extinguishing operation restricting means 46.

When the timer 46a of the fire extinguishing operation restricting means 46 times up (a predetermined time elapses), the notifying means 48 is activated and corresponds to a start preparation completed state such as "please press the start operation button". The voice message is re-outputted through the speaker 44A (step S25), the output voice message is received, and the activation operation button in the operation box 33A is pressed (step S26). Information for stopping or taking out and moving a device such as a ventilation fan in A is output (step S27).

Simultaneously with the pressing operation of the activation operation button, the delay timer 45 in the control section 41 starts the time counting operation (step S28). It is determined whether or not the fire has been extinguished or extinguished until the delay timer 45 has timed out (about 25 seconds), and the emergency stop operation switch in the operation box 33A has been pressed. (Step S29), and if there is an operation, step S29.
At the same time as returning to step 26, the information output for stopping or carrying out the device in the protected area A is restored (step S30). Then, if the delay timer 45 times out without any operation (step S31), the control unit 41
A start command signal is output from the starter 32 to open the corresponding opener 39, and the corresponding selection valve 37A is opened (step S32), so that the carbon dioxide extinguishing agent in the carbon dioxide container 36 is released. It is discharged from the head 30A into the protective section A through the pipes 35 and 34A (step S33).

At this time, the stop valve 3 which is open at the same time
The pressure switch 42A installed downstream of 8 operates (step S34), and in response to the pressure detection signal, the filling indicator lamp 43A provided outside the vicinity of the protection zone A is turned on to fill the extinguishing agent. To the outside (step S3
5).

The fire operation flowchart shown in FIG. 2 is based on the timer 46 in the fire extinguishing operation restricting means 46.
When a is timed up, the notification means 48 operates,
A voice message corresponding to a ready-to-start state such as "please press the button for starting operation" is displayed on the speaker 44.
Although the case of re-outputting through A (44B) has been described, the output of such a voice message in the start preparation state (step S25) may be omitted, and in this case, the notification unit 48 is not necessary. In addition, in the above-described embodiment, when the opening / closing door of the operation box 33A (33B) is opened, the evacuation warning such as a voice warning is output and the notifying means 47 is actuated. Check the situation in the compartment and then press the button for start-up operation. ”A voice message corresponding to the pressing operation standby time (about 5 seconds) is displayed on the speaker 44A (4).
4B), and the fire extinguishing operation regulating means 46.
Although the timer 46a starts the time counting operation in the above, the timer 46a time measuring operation in the fire extinguishing operation restricting means 46 may be started after the activation operation button is once pressed.

FIG. 3 is a flow chart showing a fire operation flow in the case of manually activating the safety device for carbon dioxide extinguishing equipment according to another embodiment of the present invention. The difference is that the control unit 4
The timer 46a of the fire-extinguishing restricting means 46 (see FIG. 1) in No. 1 starts the timekeeping operation at the time of pressing the start operation button in the operation boxes 33A and 33B, and the pressing operation is performed for a predetermined time (5 When the time is up for about 2 seconds), the transmission of the activation command signal to the activation device 32 is allowed, and the notification means 47 notifies the duration of the pressing operation on the activation operation button. To do
Specifically, the point that the voice message "Please check the situation in the protected area and then press and hold the start operation button for 5 seconds" is output through the speakers 44A and 44B, and the fire extinguishing control means 46. Timer 46a
When the time is up, the notification means 48 notifies the startup start state, specifically, the voice message "Fire extinguishing equipment has been started" is output through the speakers 44A and 44B. Other configurations are exactly the same. Further, the difference as the operation flow is the same as the flow of FIG. 2 in that step S26 precedes steps S24 and S25, and is otherwise the same.

Even in the safety device for carbon dioxide fire extinguishing equipment having the operation flow shown in FIG. 3, the output of a voice message in a starting state such as "fire extinguishing equipment has been activated" by the notifying means 48 (step S25)
May be omitted.

FIG. 4 is a flow chart showing a fire operation flow in the case of manually activating the safety device for carbon dioxide extinguishing equipment according to another embodiment of the present invention. It is a combination of the configurations of. Specifically, the fire-extinguishing restricting means 46 (see FIG. 1) in the control unit 41 is provided with the operation boxes 33A and 33B.
The operation boxes 33A and 33B until a predetermined time (about 5 seconds) elapses after the opening / closing door (not shown) is opened.
A timer that restricts the transmission of the start command signal to the starter 32 even if the start operation button provided therein is pressed and the operation boxes 33A and 3A after the timer expires
Only when the pressing operation of the start-up operation button in 3B is started, the timing operation is started, and when the pressing operation is continued for a predetermined time (about 5 seconds) and time is up, the start-up device 32 is started. It is equipped with both a timer that permits the transmission of the command signal, and the notification means 48 uses the above-mentioned 2
Of the two timers, a notification means that operates when the former timer times out and outputs a voice message corresponding to the start ready state, and a voice means that operates when the latter timer times out and corresponds to the start start state It has both functions of a notification means for outputting a message.

The flow of the fire operation in the safety device of the carbon dioxide fire extinguishing equipment having the above-described structure when the fire occurs in one of the protection zones A will be described below. First, find and confirm a fire (step S2
0) opens the open / close door of the operation box 33A (step S
21), and accordingly, an evacuation warning such as a voice warning is output (step S22) and the notification means 47 is issued.
Is activated, and a voice message corresponding to the pressing operation standby time (about 5 seconds) such as “This is a fire extinguishing equipment starter. Please check the situation in the protected area before pressing the start operation button”. It is output through the speaker 44A (step S23). At the same time, one of the timers in the fire extinguishing control means 46 starts the time counting operation, and it is determined whether or not a predetermined time (5 seconds) set in advance has elapsed (step S24). During this time, even if the activation operation button is pressed, the activation command signal is not transmitted to the activation device 32 due to the restricting action of the fire extinguishing operation restricting means 46.

When one of the timers in the fire extinguishing control means 46 has timed out (elapse of a predetermined time), the notification means 48 is activated and the "start operation button 5
A voice message corresponding to the ready-to-start state such as "press and hold for 2 seconds" is re-outputted through the speaker 44A (step S25), and in response to the output voice message, the operation button for activation in the operation box 33A is pressed. Operate (step S26).

Whether or not the other timer in the fire extinguishing operation restricting means 46 starts the timekeeping operation at the time when the activation operation button is pressed, and whether or not the pressing operation duration has exceeded a predetermined time (about 5 seconds). Is determined (step S36),
When the predetermined time has elapsed, the notification means 48 is reactivated,
A voice message corresponding to the start-up status "Fire extinguishing equipment has been started" is output through the speaker 44A (step S37), and at the same time, the equipment such as the ventilation fan in the protection section A is stopped or taken out. Is output (step S27). After this,
As in the case of FIGS. 2 and 3, the operation proceeds in the order of steps S28 to S35.

In each of the above-mentioned embodiments, the set time of the timer 46a in the fire extinguishing control means 46 is sufficient for confirming the evacuation of personnel in the protection zones A and B and the confirmation of the operator's correctness / incorrectness, for example. In time, it is better to be as short as possible.

[0033]

As described above, according to the invention of claim 1, when it is not a fire, a mistake with the operation box of other equipment,
Alternatively, even if the opening / closing door of the operation box is opened by mischief and the activation operation button inside the operation box is pressed, the activation command signal is not transmitted to the activation device instantly, and the personnel in the protection compartment are Only when the activation operation button is pressed after the elapse of the time required to confirm that the person has evacuated, the activation device can transmit the activation command signal. Therefore, it is possible to prevent unnecessary activation of fire extinguishing equipment due to erroneous operation or mischievous operation, and avoid occurrence of serious situations such as fatal accidents due to unexpected release of carbon dioxide when people are in the protected area. Has the effect.

According to the invention of claim 4, similarly to the above, even if the activation operation button is pressed due to a mistake or mischief of the operation box, as long as the operation time is not continued for a predetermined time or longer. Since the transmission of the start command signal to the starter can be prevented, that is, one of the start conditions is that the operator can confirm the correctness of the operation by increasing the time length of the operation action for the start operation button. By that,
In general, it prevents accidental start-up of fire extinguishing equipment due to erroneous operation or mischievous operation, which is an instantaneous or short-time operation, and causes accidents such as death due to unexpected release of carbon dioxide in the presence of people in the protected area. There is an effect that it can be avoided.

Further, in the case of notifying the operation standby time for the activation operation button in the case of the invention of claim 1 and the operation continuation time for the activation operation button in the case of the invention of claim 4, when a normal fire occurs, The operator can be clearly informed of the operating procedure, and a predetermined fire extinguishing can be ensured. Furthermore, in any one of the first and fourth aspects of the invention, by adopting a configuration in which the state in which the timer in the fire-extinguishing operation regulating means has timed out, that is, the state in which the operation regulation is released, is notified, the starting operation is performed. By clearly notifying the operator of the next action such as a pressing operation on the button or releasing the pressing operation, it is possible to speed up the prescribed fire extinguishing and speed up the evacuation of the operator himself.

[Brief description of drawings]

FIG. 1 is a block diagram showing a safety device for carbon dioxide extinguishing equipment according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a fire operation flow by manual activation according to the above embodiment.

FIG. 3 is a flowchart showing a fire operation flow by manual activation according to another embodiment of the present invention.

FIG. 4 is a flowchart showing a fire operation flow by manual activation according to another embodiment of the present invention.

FIG. 5 is a system diagram of carbon dioxide extinguishing equipment.

FIG. 6 is a flowchart showing a fire operation flow by manual activation in a conventional carbon dioxide fire extinguishing facility.

[Explanation of symbols]

 32 starter device 33A, 33B operation box 41 control unit 45 delay timer 46 fire extinguishing operation regulation means 46a timer 47, 48 notification means A, B protection section

Claims (6)

[Claims] 1. Installed in or near a protected area,
Inside, an operation box with an opening / closing door equipped with a start operation button for giving a start command to the starter of the carbon dioxide fire extinguishing equipment and an emergency stop operation button for canceling the start command, and the above start operation A control unit including a delay timer for operating the carbon dioxide fire extinguishing equipment so as to release a fire extinguishing agent by transmitting a start command signal to the starter of the carbon dioxide fire extinguishing equipment after a lapse of a predetermined time after operating the button. A safety device for carbon dioxide fire extinguishing equipment comprising, wherein the control unit operates the starting operation button until a predetermined time elapses after the opening / closing door of the operation box is opened. Also provided is a safety device for carbon dioxide fire extinguishing equipment, which is provided with a fire extinguishing operation restricting means including a timer for restricting transmission of a start command signal to the starter. 2. The safety device for carbon dioxide fire extinguishing equipment according to claim 1, further comprising an informing means for informing an operation standby time for the operation button for starting when the opening / closing door of the operation box is opened. 3. The safety device for carbon dioxide fire extinguishing equipment according to claim 1, further comprising an informing means for informing a start ready state in which the timer in the fire extinguishing operation regulating means has timed out. 4. Installed in or near a protected area,
Inside, an operation box with an opening / closing door equipped with a start operation button for giving a start command to the starter of the carbon dioxide fire extinguishing equipment and an emergency stop operation button for canceling the start command, and the above start operation A control unit including a delay timer for operating the carbon dioxide fire extinguishing equipment so as to release a fire extinguishing agent by transmitting a start command signal to the starter of the carbon dioxide fire extinguishing equipment after a lapse of a predetermined time after operating the button. A safety device for carbon dioxide fire extinguishing equipment, comprising: the control unit, when the opening / closing door of the operation box is opened and the operation button for activation is continuously operated for a predetermined time, the activation is performed. A safety device for carbon dioxide fire extinguishing equipment, characterized in that a fire extinguishing operation regulating means including a timer that allows transmission of a start command signal to the device is provided. 5. The safety device for carbon dioxide fire extinguishing equipment according to claim 4, further comprising an informing means for informing an operation continuation time of the activation operation button when the opening / closing door of the operation box is opened. 6. The safety device for carbon dioxide extinguishing equipment according to claim 4, further comprising an informing means for informing a start-up state in which the timer in the fire extinguishing operation regulating means has timed out.