JP4334396B2 - Fire alarm - Google Patents

Description

  The present invention relates to a fire alarm, and more particularly to a fire alarm that can be adjusted by a user.

  In conventional fire alarms, in order to determine a fire, it is determined that heat or smoke is at a predetermined level. This level can detect the presence of heat or smoke as a fire, and can also detect a heater (heat ) And smoking (in the case of smoke) are set at a certain level to prevent false alarms.

  Such a fire alarm device is provided with a buzzer or a speaker for sound alarm as a member for alarming, so that a buzzer sound and a necessary sound volume can be notified so that a wide range can be informed of a fire. A sound alarm is sounded.

As a conventional fire alarm device, there is known a residential fire alarm device provided with a drawstring capable of temporarily stopping an alarm issued in the event of a fire (see, for example, Patent Document 1).
JP 2003-99871 A

  However, depending on the user, the level of false alarms is low, or false alarms may be issued, and there is a demand for higher sensitivity, and conventional fire alarms cannot be adjusted by individual users.

  Similarly, the volume and quality of the alarm sound are constant regardless of the size of the alarmed house, etc., and the alarm sounds regardless of the installation location or the resident's hearing.

  Therefore, an object of the present invention is to obtain a fire alarm capable of setting the performance of a fire alarm according to the preference of a user such as a resident when used mainly in a house.

The present invention includes a main body, a detection unit that detects and outputs an environmental change based on a fire phenomenon, a determination unit that determines whether or not an alarm is necessary based on the output of the detection unit, and an alarm that receives a fire output from the determination unit In a fire alarm device having a judgment level for judging a fire as compared with the output from the detection part and having an adjusting means capable of adjusting the judgment level, A step portion formed on the back surface and having a diameter smaller than that of the main body and a notch portion formed on the outer peripheral surface of the step portion is provided, and the adjusting means is partially exposed from the notch portion and end at a position along the outer peripheral surface. The portion is arranged.

The present invention is characterized in that the adjusting means is a disk-shaped knob.

The present invention includes a main body, a detection unit that detects and outputs an environmental change based on a fire phenomenon, a determination unit that determines whether or not an alarm is necessary based on the output of the detection unit, and an alarm that receives a fire output from the determination unit In the fire alarm with a volume adjustment means that can adjust the volume and sound quality of the alarm from the alarm unit, and formed on the back of the main body, a step part having a smaller diameter than the main body, and a step part The sound volume adjusting means is characterized in that a part of the volume adjusting means is exposed from the notch and an end is disposed at a position along the outer periphery.

The present invention is characterized in that the volume adjusting means is a disk-shaped knob.

A main unit, a detection unit that detects and outputs an environmental change based on a fire phenomenon, a determination unit that determines the necessity of an alarm based on the output of the detection unit, and an alarm unit that generates an alarm in response to a fire output from the determination unit The discrimination unit has a discrimination level for discriminating a fire in comparison with the output from the detection unit, and can adjust the discrimination level, the adjustment means that can adjust the discrimination level, and the volume and sound quality of the alarm from the alarm unit In a fire alarm provided with a volume control means, provided on the rearmost surface of the main body, provided with a step portion having a smaller diameter than the main body and two notch portions formed at positions facing the outer peripheral surface of the step portion, One adjustment means is partially exposed from the notch, and an end is disposed at a position along the outer peripheral surface, and the volume adjusting means is partially exposed from the other notch and positioned along the outer peripheral surface. An end portion is disposed on the front side.

In the present invention, a notch portion is formed on the outer peripheral surface where the backmost step portion of the main body is formed, and a part of the adjusting means is exposed therefrom. For this reason, the adjustment means does not hinder the engagement with the base member when mounted on the ceiling or wall, is not visible from the front of the fire alarm, and is not easily touched by unrelated persons. In the state where the vessel is installed, there is an effect that the adjusting means cannot be touched.

In the present invention, since the adjusting means is a disk-shaped knob, there is an effect that it is easy to turn with a finger.

In the present invention, a notch portion is formed on the outer peripheral surface where the backmost step portion of the main body is formed, and a part of the volume adjusting means is exposed therefrom. For this reason, the volume adjustment means does not hinder the engagement with the base member when mounted on the ceiling or wall, is not visible from the front of the fire alarm, and is not easily touched by unrelated persons, In the state where the alarm is installed, there is an effect that the volume adjusting means cannot be touched.

In the present invention, since the volume adjusting means is a disk-shaped knob, there is an effect that it is easy to turn with a finger.

  According to the present invention, two notch portions are provided on the outer peripheral surface of the step portion formed on the rearmost surface of the main body at positions facing each other, and one of the notch portions is an adjustment unit, and the other is a volume adjustment unit. Each part is exposed. Therefore, the adjusting means and the volume adjusting means do not hinder the engagement with the base member when mounted on the ceiling or wall, are not visible from the front of the fire alarm, and are not easily touched by unrelated persons. In the state where the fire alarm is installed, there is an effect that the adjusting means and the volume adjusting means cannot be touched.

Embodiment 1
1 is a block circuit diagram showing a fire alarm device according to an embodiment of the present invention, FIG. 2 is a rear view of the appearance of the fire alarm device, FIG. 3 is a side view thereof, FIG. 4 is a front view thereof, and FIG. FIG. 5 is an explanatory view showing the installation of the fire alarm.

  The blocks constituting the fire alarm device S of this embodiment will be described. In FIG. 1, 1 is a battery as a power source, 2 is a power monitoring circuit by monitoring the voltage of the battery 1, and 3 is a power monitoring circuit 2. Switch circuit for opening and closing the power supply, 4 a constant voltage circuit for supplying a constant voltage (for example, 3 V), 5 a fire detection circuit as a detection unit for detecting smoke, heat, etc., 6 for a current limiting resistor 7 Is an acoustic stop switch that is also used for testing, connected in series, 8 is a microcomputer as a discriminator for controlling the processing of the entire fire alarm, and 9 is a fire discriminator when the microcomputer 8 discriminates a fire. Sensitivity setting circuit whose level can be adjusted by a variable resistor or the like, 10 is a voice synthesizing circuit having a function of outputting voices of various phrases from the speaker 11 as an alarm unit, and 12 outputs voices Switching circuit for supplying power to the voice synthesizing circuit 10 to be closed when 13 is volume setting circuit capable of adjusting the volume of sound to be uttered from the speaker 11 by a variable resistor or the like.

  As shown in FIGS. 2 to 5, the appearance of the fire alarm device S configured as described above is exposed on the back side of the main body 20, and a sensitivity setting knob 21 and a volume setting knob 22 are arranged. Has been. The sensitivity setting knob 21 and the volume setting knob 22 are connected to variable resistors (not shown) of the sensitivity setting circuit 9 and the volume setting circuit 13, respectively. By rotating both the knobs 21 and 22, A fire resistance level and a sound volume can be set by adjusting a resistance value of a variable resistor (not shown).

  The sensitivity setting knob 21 and the volume setting knob 22 have notches 26 and 27 formed on the outer peripheral surface 25 where the step portion 24 of the rearmost surface 23 of the main body 20 is formed, and a part thereof is exposed therefrom. is doing. And the end part of both the knobs 21 and 22 is arrange | positioned in the position along the outer peripheral surface 25, and it touches the knobs 21 and 22 along the outermost surface 23 or the outer peripheral surface 25 with a finger, and rotates. The operation can be performed.

  Here, both the knobs 21 and 22 are formed in a resistance shape such as a groove on the outer periphery of the disk-shaped operation portion, and are configured to be easily turned by a finger. Although not shown in detail, both knobs 21 and 22 show a mark indicating maximum and minimum and a scale indicating a variable stage.

  Such an arrangement of the knobs 21 and 22 is provided on the back side of the fire alarm S, and does not hinder the engagement with the base member 28 when attached to the ceiling or wall. It cannot be seen from the front of the container S, and it is a position where an unrelated person cannot easily touch. Further, since there is the outermost periphery 29 from the rearmost surface 23 of the fire alarm S through the outer peripheral surface 25 and the stepped portion 24, both the knobs 21 and 22 can be almost touched in the installed state of the fire alarm S. It is not possible.

  The shape of the main body 20 of the fire alarm S is related to a smoke type, and a smoke inlet 30 whose outer periphery is covered with a wire mesh is formed. Further, on the front face of the fire alarm S, a push button 31 and a string 32 for turning on the acoustic stop switch 6 are shown, and an acoustic port 33 corresponding to the position of the speaker 11 is shown.

  In addition, on the rearmost surface 23 of the fire alarm S, metal fittings 33 and 34 that engage with the base member 28 are provided. By being caught by the edges 35 and 36 of the base member 28, the main body 20 is engaged with the base member 28 screwed to the installation surface. At that time, the standing pieces 37 and 38 of the base member 28 are in positions where they abut against the outer peripheral surface 25 of the main body, respectively, so that the main body 20 can be easily rotated for engagement.

  By connecting the sensitivity setting knob 21 to the sensitivity setting circuit 9 and rotating the knob 21, a fire alarm is normally given when the smoke concentration is about 5% / m, for example. Then, when the resident who installs in the house wants a warning at the initial fire and wants to perform a highly sensitive fire detection, by rotating the knob 21, for example, about 2% The fire alarm device S can be made highly sensitive so as to issue a fire alarm at / m.

  Moreover, in the room where the fire alarm S is installed, when there is an opportunity for smoking by a plurality of people, it is possible to prevent the occurrence of false alarms by performing low-sensitivity fire detection, and the knob 21 is set to the above-described high sensitivity. By rotating in the direction opposite to the normalization, the fire alarm device S can be reduced in sensitivity so as to issue a fire alarm at about 10% / m, for example.

  The sensitivity change range at this time can be arbitrarily set, and may be set from high sensitivity to low sensitivity as described above, but when ensuring the maintenance of the predetermined detection sensitivity, the minimum sensitivity is set as the predetermined sensitivity, Only the direction of higher sensitivity can be made possible. As a result, it is possible to prevent a delay in alarm during an actual fire due to neglect of low sensitivity.

  Further, by connecting the volume setting knob 22 to the volume setting circuit 13 as described above, and rotating the knob 22, the house is adjacent to the sound for normal fire alarm. When all the persons are healthy persons, the volume of the alarm may be slightly low, and by rotating the knob 22, the volume of the alarm sound can be suppressed and the neighborhood can be considered.

  In addition, in a house where a fire alarm S is installed, if there are elderly people who are deaf and hard of hearing, a loud fire alarm can be made by increasing the volume, and the knob 21 is set as above. By rotating in the opposite direction, the volume of the fire alarm can be increased.

  The change range of the volume at this time can be set arbitrarily, and it may be set to both larger and smaller than the initial state as described above, but when ensuring the predetermined volume, the minimum volume is set as the initial volume. It is also possible to enable only the direction of loud volume. Thereby, it is possible to prevent a recognition delay at the time of an actual fire due to being kept small.

  In particular, when the resident includes a person with a hearing loss such as an elderly person, a volume higher than normal is desired, and it is important for life protection to surely notify a fire.

  In this embodiment, the sound setting means for setting the volume for the alarm sound has been described. However, the present invention is not limited to this, and the sound quality and tone color may be adjusted in combination or independently. That is, it may be difficult for the elderly to hear the high sound range, and since a timbre that can be heard easily is desired, various adjustments can be made regarding ringing.

  Next, the operation of the fire alarm device S configured as described above will be described.

  First, with respect to the overall movement, the battery 1 is set, the power is turned on, and initial setting is performed. Each routine of switch input determination processing, fire monitoring processing for determining whether or not a fire has occurred, disconnection monitoring processing for determining whether or not the fire detection circuit 5 is disconnected, battery voltage drop monitoring processing, and monitoring result output processing Are repeated sequentially.

  Next, each routine will be briefly described. First, the routine of each switch input determination process is terminated when the microcomputer 8 checks whether there is an input from the acoustic stop switch 6 and if there is no input from the switch 6. To do. Further, if there is an input from the switch 8, the presence or absence of the fire flag is set next. If the fire flag is set, a fire voice phrase indicating a fire state is output. The fire sound stop flag for stopping for a minute is set, and this routine is finished.

  Also, if the fire flag is not set, and if the disconnection flag is set next, whether or not the disconnection flag is set, an abnormal voice “Alarm is abnormal.” Replace the alarm. "Is output once, and this routine is terminated.

  Also, if the disconnection flag is not set, whether or not the voltage drop confirmation flag is set next, and if the voltage drop confirmation flag is set, the error sound "Alarm is abnormal. Replace." Processing for outputting once is performed, and this routine is terminated.

  Also, if the voltage drop confirmation flag is not set, check whether the voltage drop detection flag is set next, and if the voltage drop detection flag is set, the error sound “Alarm is abnormal. Replace. Please process "to output" once "and end this routine.

  Also, if the low voltage detection flag is not set, the fire alarm is judged to be in a normal state, and the fire sound “Fire. Fire” is output once to indicate that it is normal. To complete the routine.

  Next, in the fire monitoring processing routine, first, the microcomputer 8 captures the detection value from the fire detection circuit 5, and compares the detection value with the fire determination level, that is, the detection value becomes equal to or higher than the fire determination level. It is determined whether or not a fire has occurred. If it is determined that a fire has not occurred, the fire flag is cleared, and then a period during which the sound of the fire is not sounded is set. Therefore, the 5-minute timer processed in the microcomputer 8 is cleared, the fire sound stop flag is also cleared, and this routine is terminated.

  If it is determined that a fire has occurred, the fire flag is set and then the fire sound stop flag is set. If the fire sound stop flag is set, the timer counts for 5 minutes. Continue, then look at the presence or absence of 5 minutes, and if 5 minutes have not elapsed, end this routine.

  If it is determined that 5 minutes have passed, the timer is cleared for 5 minutes, the fire sound stop flag is cleared so that a fire sound can be output, and this routine is terminated.

  Next, the disconnection monitoring processing routine first checks whether or not a fire flag is set. If the fire flag is set, priority is given to fire detection, and the routine ends.

  If the fire flag is not set, it is next determined from the detection value from the fire detection circuit 5 whether or not it is disconnected. In other words, by looking at whether or not the detection value is almost not obtained, if no output is obtained, it is determined that some circuit element is disconnected, and if it is not disconnected, the disconnection flag is cleared and processing is performed. finish. If it is determined that a disconnection has occurred, a disconnection flag is set, and this routine is terminated.

  Next, the battery voltage drop monitoring process routine first looks at the presence or absence of the fire flag. If the fire flag is set, the fire detection is prioritized in the same way as the disconnection monitoring process routine described above. Exit.

  If the fire flag is not set, the battery voltage drop confirmation flag is checked next. If the battery voltage drop confirmation flag is set, it is held in that state. This routine is terminated without performing the drop monitoring process.

  If the battery voltage drop confirmation flag is not set, it is determined whether the voltage of the battery 1 is equal to or lower than a predetermined voltage value (for example, 5 V). The lowering detection flag is cleared, and this routine ends.

  In addition, if the voltage of the battery 1 is equal to or lower than a predetermined voltage value, after setting the voltage drop detection flag, whether or not the voltage drop is detected twice consecutively, if it is the first time, This routine ends.

  If it is determined that a voltage drop has been detected twice consecutively, the battery voltage drop confirmation flag is set, and this routine is terminated.

  Next, the monitoring result output processing routine first checks for the presence or absence of a fire flag, and if the fire flag is set, then checks whether or not the fire voice stop flag is set and then sets the fire voice stop flag. If a fire has occurred, a fire voice “fire is fire.” Is output as a voice message indicating the fire, and this routine is terminated.

  Similarly to the case where the fire flag is not set, even when the fire flag is set, even when the fire sound stop flag is set, the fire sound is not output and the process proceeds to the next.

  Next, the presence or absence of a disconnection flag is checked, and if the disconnection flag is not set, then the presence or absence of a battery voltage drop confirmation flag is checked. If the battery voltage drop confirmation flag is not set, this routine is terminated. .

  Further, when the disconnection flag or the battery voltage drop confirmation flag is set, it is checked whether or not counting of a one-hour timer (for abnormal sound output) processed inside the microcomputer 8 is started. If it is determined that the 1-hour timer has not been started, the microcomputer 8 outputs a sound to the speech synthesizer circuit 10 as a process of outputting the abnormal sound “Alarm is abnormal. Then, after inputting the voice selection signal and outputting the abnormal voice once, after receiving the back signal, the microcomputer 8 again inputs the voice output and the selection signal to the voice synthesis circuit 10 to output the abnormal voice. Then the timer is counted for 1 hour.

  If the 1-hour timer is started, the 1-hour timer is continued. Next, whether one hour has passed or not, if one hour has not passed, the timer (for alarm sound output) counting for 40 seconds similar to the one hour timer is started. Next, it is checked whether or not 40 seconds have elapsed. If 40 seconds have not elapsed, the processing is terminated. If 40 seconds have elapsed, the timer counter is cleared for 40 seconds and an alarm sound “beep” is output. This routine is terminated.

  If it is determined that one hour has elapsed, the abnormal sound “Alarm is abnormal. Replace it” is output twice as before, and then the 1-hour timer counter is cleared. End the routine.

  In the fire alarm device S according to the first embodiment, a fire detection circuit 5 that detects and outputs an environmental change based on a fire phenomenon, a microcomputer 8 that determines the necessity of an alarm based on the output of the fire detection circuit 5, and a microcomputer A speech synthesis circuit 10 and a speaker 11 that receive a fire output from 8 and issue an alarm are provided in the main body 20, and the microcomputer 8 is set with a discrimination level for discriminating a fire from the output from the fire detection circuit 5. Further, since the sensitivity setting knob 21 is arranged so that the sensitivity setting circuit 9 capable of changing the determination level can be operated from the outside of the main body 20, the user can easily determine the determination level according to his / her preference. There is an effect that can be adjusted.

  Further, the fire alarm S is arranged so that the volume setting knob 22 of the volume setting circuit 13 that can change the volume of the alarm sound generated by the fire output from the microcomputer 8 can be operated from the outside of the main body 20. The user can easily adjust the sound volume according to his / her preference, and can additionally or selectively adjust the sound quality and the like, and there is an effect that various adjustments can be made regarding ringing.

  In this fire alarm device S, the fire discrimination level is a level that is directly compared with the detected value, but it may be a comparison with a calculated value such as the rate of increase of the output value or the integral value. The knobs 21 and 22 for adjusting the sensitivity and volume may be configured to select a resistance value by combining a plurality of resistors using a dip switch or the like. Of course, the alarm sound may be a buzzer sound instead of a voice message.

Embodiment 2
Next, Embodiment 2 of the present invention will be described. The fire alarm Sp of the second embodiment has the same structure and block configuration as the fire alarm S of the first embodiment. The difference from the first embodiment is that the fire alarm Sp is simply a fire. Not only a fire alarm is issued based on the output of the detection circuit 5, but also has a pre-alarm level similar to the fire discrimination level, and this pre-alarm level is a higher sensitivity level than the fire discrimination level, so that a normal fire A preliminary warning can be issued earlier than the warning. And the voice alarm from the speaker 11 by the voice synthesis circuit 10 based on the output of the microcomputer 8 is not only a fire voice “fire. Fire” but also a pre-voice “confirming the scene” as a voice message indicating a preliminary fire alarm. Please do it. "

  The level set in the sensitivity setting circuit 9 by the rotation of the sensitivity setting knob 21 of the fire alarm Sp is a pre-alarm level, and the volume by the rotation of the volume setting knob 22 of the fire alarm Sp. The volume adjusted by the setting circuit 13 is the volume when pre-sound is generated. Therefore, the fire determination level of the fire alarm Sp is constant, and the fire alarm is also uttered at a predetermined volume. This has the advantage that the fire alarm of the fire alarm device Sp can be reliably performed since it is fixed.

  The pre-alarm level is set to be higher in sensitivity than the fire discrimination level as in the past, but when the fire discrimination level is about 5% / m, the pre-alarm level is set to about 2.5%, for example. / M. Since the fire discrimination level is fixed and reliably alarmed, this pre-alarm level can be widely applied to the high sensitivity side, for example, adjustment from a very low level of about 0.5 to 4% / m. Can be made possible.

  As for the preliminary alarm, the lower the pre-alarm level as described above, the higher the possibility that a false alarm will be produced. Accordingly, by reducing the volume of the preliminary alarm, it is possible to reduce inconvenience to the surroundings even if false alarms occur frequently. This combination of high-sensitivity level settings and low-volume alarms enables responses to extremely early fires, including the possibility of false alarms, so that when a fire actually occurs, it can be safely extinguished or evacuated. it can.

  About such operation | movement of the fire alarm Sp, it is substantially the same as the said Embodiment 1, However, A different point is demonstrated.

  First, the overall movement is the same, and each routine is executed in the same way. In the fire monitoring processing routine, the detection value from the fire detection circuit 5 is compared with the pre-alarm level based on the setting of the sensitivity setting circuit 9 in the same manner as the fire determination level. When the detected value does not exceed the fire discrimination level and exceeds the pre-alarm level, a preliminary alarm flag is set. This preliminary alarm flag is handled in the same manner as the fire flag when the fire determination level is exceeded. In other words, in the fire discrimination process, the fire sound stop flag is cleared not only when the fire flag is cleared but also when the AND condition clears the preliminary alarm flag. This is the case of the OR condition in which the preliminary alarm flag is set as well as the case where it is set.

  Next, in the monitoring result output processing routine that emits sound, the fire flag is set when the fire flag is set when the fire flag is set and the fire flag is not set when the fire flag is set. "Fire is fire." Is output at a fixed volume. Similarly, if the fire alarm stop flag is not set when the preliminary alarm flag is set, check the pre-sound "Check the site." Is output at a volume based on the setting of the volume setting circuit 13.

  In the fire alarm Sp in Embodiment 2, the microcomputer 8 has a fire discrimination level and a pre-alarm level as discrimination levels, the fire discrimination level is fixed, and the pre-alarm level is set by the sensitivity setting knob 21. The adjustment by the circuit 9 has an effect of guaranteeing a general fire discrimination function.

  Further, the fire alarm Sp generates an alarm sound corresponding to each of the fire sound based on the fire discrimination level from the microcomputer 8 and the pre sound from the pre-alarm level, and the volume of the fire sound is fixed. The volume of the sound can be adjusted by the volume setting circuit 13 by the volume setting knob 22 and has an effect of guaranteeing a general fire alarm function.

  In addition, since the fire sound and the pre-sound in the second embodiment are different in urgency at the time of the fire occurrence, it is desirable that the pre-sound is made a gentle tone and the fire sound is made a tight tone by the initial setting.

Embodiment 3
Next, a third embodiment of the present invention will be described. The fire alarm device Sd of the third embodiment has the same structure and block configuration as the fire alarm device S of the first embodiment, as in the second embodiment, and the difference from the first embodiment is as follows. Similar to the fire alarm Sp of the second embodiment, not only a fire alarm is issued based on the output of the fire detection circuit 5, but also a pre-alarm level similar to the fire discrimination level.

  Further, the difference from the fire alarm Sp of the second embodiment is that the sound from the speaker 11 by the voice synthesis circuit 10 based on the output of the microcomputer 8 is the fire sound “fire. Fire”, pre-voice “ In addition to “Please check the site.”, There is a dirty voice “air is dirty” as a voice message indicating pollution as environmental degradation at the installation location of the fire alarm Sp.

  That is, when the pre-alarm level can be set to a very low and high sensitivity like the fire alarm device Sp of the second embodiment, when the detection value output from the fire detection circuit 5 detects smoke, It may be an environmental abnormality such as air pollution, output due to dust or smoking. Therefore, in the fire alarm device Sd of the third embodiment, it is generated including the pre-sound and the contaminated sound.

  Such an operation of the fire alarm device Sd is almost the same as that of the second embodiment, and the difference will be briefly described.

  First, the overall movement and each routine are performed in the same way. Among them, the routine of the fire monitoring process is the same, and the detection value from the fire detection circuit 5 is compared with the pre-alarm level based on the setting of the sensitivity setting circuit 9 similarly to the fire discrimination level. Depending on the result, a fire flag or a preliminary alarm flag is set.

  And in the routine of the monitoring result output process that emits sound, there is a slight difference from the fire alarm device Sp of the second embodiment, and the fire flag is set by checking the presence or absence of the fire flag and the preliminary alarm flag. If the fire sound stop flag is not set, the fire sound “Fire is fire. Fire” is output at a fixed volume, and the fire sound stop flag is set when the preliminary alarm flag is set. If is not set, here, the dirty voice “Air is dirty” and the pre-voice “Check the site” are output at a volume based on the setting of the volume setting circuit 13. As a result, it can be used not only for confirming the occurrence of a fire but also for warnings such as smoking warnings in non-smoking places. These pre-voices and dirty voices may be integrated without being individually set, and the message contents are not limited to the exemplified words.

  Note that, as a modification of the third embodiment, a unit that can be set to selectively generate the pre-sound and the dirty sound, for example, a selection switch may be provided, and the sound may be limited to the sound of only the dirty sound. In this case, the pre-voice can summarize the content of the fire alarm, the contaminated audio can warn of the contamination, and the words to be spoken.

  The operation of the setting means is to set the contamination flag when the selection switch is turned on and clear the contamination flag when the selection switch is turned off. Further, in the monitoring result output processing routine, when the preliminary alarm flag is set and the pre-voice is to be uttered, the presence or absence of the contamination flag is checked. Say “It is dirty.” If the stain flag is not set, the pre-speech “Check the site.” These pre-speech sounds and fouling voices are not limited to the words exemplified in the contents, but as a fouling warning, the message is based on the premise that they will be installed in a non-smoking area, such as “This is smoking cessation. It is also possible.

  In addition, as a contamination warning, a plurality of audio contents may be prepared depending on the difference between non-smoking places and smoking places, necessity of ventilation, etc. Is possible.

  In this way, the fire alarm device Sd emits an audible alarm by a voice message, and the alarm sound for the pre-output can include or select a message for the contamination, and the message for the contamination can be used for the voice message. Depending on the situation, it is possible to include applications such as a smoking sensor and a fouling detection sensor.

1 is a block circuit diagram showing a first embodiment of the present invention. The rear view which shows the external appearance of 1st Embodiment. The side view which shows the external appearance of 1st Embodiment. The front view which shows the external appearance of 1st Embodiment. Explanatory drawing which shows the attachment method of 1st Embodiment.

Explanation of symbols

5 Fire detection circuit 8 Microcomputer 9 Sensitivity setting circuit 10 Speech synthesis circuit 11 Speaker 13 Volume setting circuit 21 Sensitivity setting knob 22 Volume setting knob

Claims (5)

A main body, a detection unit for detecting and outputting an environmental change based on a fire phenomenon, a determination unit for determining whether or not an alarm is necessary based on the output of the detection unit, and issuing an alarm in response to a fire output from the determination unit An alarm unit, the determination unit is compared with the output from the detection unit, has a determination level for determining a fire, in a fire alarm device having an adjustment means that can adjust the determination level,
Formed on the rearmost surface of the main body, and a step having a smaller diameter than the main body;
A notch portion formed on the outer peripheral surface of the stepped portion,
A part of the adjusting means is exposed from the cutout portion, and an end portion is disposed at a position along the outer peripheral surface.
The fire alarm according to claim 1, wherein the adjusting means is a disk-shaped knob.
A main body, a detection unit for detecting and outputting an environmental change based on a fire phenomenon, a determination unit for determining whether or not an alarm is necessary based on the output of the detection unit, and issuing an alarm in response to a fire output from the determination unit In a fire alarm device equipped with an alarm unit, and equipped with a volume adjustment means that can adjust the volume and sound quality of the alarm from the alarm unit,
Formed on the rearmost surface of the main body, and a step having a smaller diameter than the main body;
A notch portion formed on the outer peripheral surface of the stepped portion,
A part of the volume adjusting means is exposed from the cutout portion, and an end portion is disposed at a position along the outer peripheral surface.
4. The fire alarm according to claim 3, wherein the volume control means is a disk-shaped knob.
A main body, a detection unit for detecting and outputting an environmental change based on a fire phenomenon, a determination unit for determining whether or not an alarm is necessary based on the output of the detection unit, and issuing an alarm in response to a fire output from the determination unit An alarm unit, the discrimination unit has a discrimination level for discriminating a fire in comparison with the output from the detection unit, and an adjusting means capable of adjusting the discrimination level; and a volume of an alarm from the alarm unit In a fire alarm equipped with a volume adjustment means that can adjust sound quality etc.
Formed on the rearmost surface of the main body, and a step having a smaller diameter than the main body;
Two notched portions formed at opposing positions on the outer peripheral surface of the stepped portion,
The adjusting means is partially exposed from the one notch, and an end is disposed at a position along the outer peripheral surface,
A part of the volume adjusting means is exposed from the other cutout portion, and an end portion is disposed at a position along the outer peripheral surface.

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