JP2007193595A - Fire alarm bracket and fire alarm system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire alarm bracket that can be used by structurally combining it with a fire alarm and a fire alarm system, and to provide a fire alarm system that comprises the fire alarm and the fire alarm bracket. <P>SOLUTION: The fire alarm bracket 20 to be integrally jointed with the fire alarm 10 comprising a sensing part 11, a sound output part 13, an electric circuit 12, and a case 15 comprise: a light output part 21, an electric circuit part 23 and a case 25. When the sensing part 11 of the fire alarm 10 senses fire, alarm outputs are outputted, not only from the sound output part 13 of the fire alarm 10, but also from the light output part 21 of the fire alarm bracket 20, so that fire alarm having higher alarm efficiency can be performed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a fire alarm bracket that allows a fire alarm to be attached and detached, and a fire alarm system thereof.

  Conventionally, there are fire alarms that automatically detect smoke and heat and notify people in the building with a warning bell. Generally, there are a plurality of types of fire alarms arranged on the ceiling depending on the type of sensor. A differential fire alarm that notifies of a fire when the ambient temperature rise rate exceeds a threshold, a constant temperature fire alarm that notifies of a fire when the ambient temperature exceeds a threshold, and smoke that has entered the sensor A photoelectric fire alarm that detects a fire by detecting the fire with an optical system installed in the sensing unit due to the influence of the fire, an ultraviolet fire that detects a fire by detecting ultraviolet and infrared rays of the flame and notifies the fire There are alarms.

As described above, there are a plurality of types of fire alarms, and appropriate types of fire alarms are arranged in accordance with the installation environment to appropriately perform the fire alarm.
However, although fire can be detected accurately with background fire alarms, it is common to use a buzzer built into the fire alarm as a means of notifying the fire. Has the problem of insufficient. In addition, even a person who is not hearing-impaired may not be able to hear an alarm sound when listening to music (especially wearing headphones) or watching television.

  Here, there is a receiver (P-type receiver, R-type receiver) for communicating with each fire alarm installed in the case of a large building such as a building and informing a fire prevention manager, This receiver detects a fire from each fire alarm and emits a warning sound and emits a lamp that identifies the fire area. Not only is the fire notification target person a fire prevention manager, but the lamp that emits light also notifies. It does not improve.

  In addition, there is certainly a need for a fire alarm for those who cannot hear sound, but the normal fire alarm function may be sufficient. Therefore, it is desirable to use a normal fire alarm and to be a fire alarm for those who cannot hear sound as necessary.

  The present invention has been made to solve the above-mentioned problems, and includes a fire alarm bracket that can be used in a structural combination with a fire alarm, and a fire alarm comprising the fire alarm and the fire alarm bracket. The purpose is to provide a system.

  (1) A fire alarm system according to the present invention applies a voltage to a sound output unit that receives a detection signal from a detection unit that detects a fire with a sensor, a sound output unit that outputs sound by applying a voltage, and a detection unit. A fire alarm having an electric circuit unit, a case that covers the sensing unit, the sound output unit, and the electric circuit unit, a light output unit that outputs light by applying a voltage, and a sensing unit or an electric circuit unit of the fire alarm unit And a fire alarm bracket having a case for covering the light output part and the electric circuit part, and the case of the fire alarm is provided with the fire alarm. It is detachable from the case of the instrument bracket.

  Thus, in the present invention, the fire alarm bracket that can be integrally attached with the fire alarm comprising the sensing part, the sound output part, the electric circuit, and the case is composed of the light output part, the electric circuit part, and the case. When the detector of the detector detects a fire, not only the sound output unit of the fire alarm but also the light output unit of the fire alarm bracket is output, so that fire notification with a higher notification property can be performed. In particular, even if it is difficult for a hearing-impaired person or the like to hear an alarm sound, the light output unit provides the notification, so that it is possible to reliably notify the hearing-impaired person or the like. Further, such an operation is performed only when the fire alarm is attached to the fire alarm bracket, and it can be attached and used when light output is required. Furthermore, the production cost of only the fire alarm can be greatly reduced as compared with the case where a fire alarm for the hearing impaired person is produced separately.

Examples of the sensing unit include a differential sensing unit, a thermal sensing sensing unit, a smoke sensing sensing unit, and a flame sensing sensing unit.
The sound output unit corresponds to, for example, a sound generator such as a speaker, a bell, or a piezoelectric buzzer.
Examples of the light output unit include a strobe, an incandescent bulb (halogen bulb), and a discharge lamp (HID lamp, arc lamp, xenon lamp, fluorescent lamp, mercury lamp, sodium lamp).
In addition to the circuit board on which the copper wire pattern is formed, the electric circuit naturally includes a circuit consisting of only the connection without using the circuit board.
For power supply, household AC current and batteries can be used.

  (2) A fire alarm system according to the present invention applies a voltage to a sound output unit that receives a detection signal from a detection unit that detects a fire with a sensor, a sound output unit that outputs a sound when a voltage is applied, and a detection unit. A fire alarm having an electric circuit part, a case that covers the sensing part, the sound output part, and the electric circuit part, a sound output part that outputs a sound by applying a voltage, and a sensing part or an electric circuit part of the fire alarm And a fire alarm bracket having a case that covers the sound output part and the electric circuit part, and the case of the fire alarm is provided with the fire alarm. It is detachable from the case of the instrument bracket.

Thus, in the present invention, unlike (1), the fire alarm bracket has a sound output unit instead of the light output unit. By doing so, not only the sound output unit of the fire alarm but also the sound output unit of the fire alarm bracket can be notified, and the notification performance can be enhanced synergistically. Further, even if a failure occurs in one sound output unit, the other sound output unit can output an alarm sound, which is extremely reliable. Here, the fire alarm and the fire alarm bracket are configured separately, and the possibility of failure of both sound output units is extremely low.
In particular, if the sound output part of the fire alarm bracket outputs a sound lower than the sound output part of the fire alarm, it is easy for the hearing impaired to hear a low sound, and the fire can be reliably notified.

(3) A fire alarm system according to the present invention applies a voltage to a sound output unit that receives a detection signal from a detection unit that detects a fire with a sensor, a sound output unit that outputs a sound by applying a voltage, and a detection unit. A fire alarm having an electrical circuit unit, a case that covers the sensing unit, the sound output unit, and the electrical circuit unit, a light output unit that outputs light when voltage is applied, and a sound output unit that outputs sound when voltage is applied And an electric circuit unit that receives a signal from the sensing unit or the electric circuit unit of the fire alarm and applies a voltage to the light output unit and / or the sound output unit, and covers the light output unit, the sound output unit, and the electric circuit unit. A fire alarm bracket having a case to be attached, and the case of the fire alarm is detachable from the case of the fire alarm bracket.
Thus, in the present invention, in addition to (1), the fire alarm bracket has a sound output part. By doing so, the failure rate as a whole becomes extremely low, and high reliability can be obtained.

(4) The fire alarm system according to the present invention outputs light and / or sound output from the light output part of the fire alarm bracket based on the sound output from the sound output part of the fire alarm as necessary. The sound output from the unit is output.
Thus, in the present invention, according to the sound output from the sound output unit of the fire alarm, light is output from the light output unit of the fire alarm bracket, or sound is output from the sound output unit of the fire alarm bracket. Therefore, it is possible to notify the user of the notification of the fire alarm and the notification of the fire alarm bracket in cooperation with each other. By linking, unified notification becomes possible, and notification can be performed in a natural manner. If the notification is not linked, the notification may be inconsistent and the user may have doubts about the operation of the fire alarm.

  “To output light output from the light output unit of the fire alarm bracket and / or sound output from the sound output unit based on the sound output from the sound output unit of the fire alarm” means, for example, fire The light from the light output unit can be output in synchronization with the sound of the alarm, or the sound from the sound output unit can be output. In addition to the synchronization, light can be output from the light output unit of the fire alarm bracket or sound can be output from the sound output unit during a period in which no sound is output by the sound output unit of the fire alarm.

(5) In the fire alarm system according to the present invention, the fire alarm bracket is provided with a sensing unit for newly detecting a fire with a sensor, if necessary.
As described above, in the present invention, not only the fire alarm but also the fire alarm bracket is provided with a detection unit, so even if the detection unit of the fire alarm breaks down, the fire is appropriately detected and fired. Can be notified.

(6) The fire alarm system according to the present invention is realized by a fire detection method in which the sensor of the fire alarm and the sensor of the fire alarm bracket are different as necessary.
As described above, in the present invention, in addition to (5), the fire detection system of the fire alarm detector and the fire alarm bracket sensor are made different, so it depends on the fire alarm system environment and the fire condition. The fire can be detected and notified without fail.

  (7) The fire alarm bracket according to the present invention includes a light output unit that outputs light by voltage application, an electric circuit unit that applies voltage to the light output unit, and a case that covers the light output unit and the electric circuit unit. A fire alarm bracket having a sensing unit for detecting a fire with a sensor, a sound output unit for outputting sound by applying a voltage, and an electric for applying a voltage to the sound output unit in response to a detection signal from the sensing unit. A fire alarm case having a circuit part and a case that covers the sensing part, the sound output part, and the electric circuit part is detachable from the case of the fire alarm bracket. The electric circuit unit of the fire alarm bracket receives a signal from the unit and applies a voltage to the light output unit.

Thus, in the present invention, the fire alarm system can grasp the fire alarm bracket as a sub-combination invention.
These outlines of the invention do not enumerate the features essential to the present invention, and a sub-combination of these features can also be an invention.

(First embodiment of the present invention)
[1. Outline configuration of fire alarm system]
FIG. 1 is a plan view of a fire alarm system according to the present embodiment and a sectional view in a removed state. FIG. 2 is a block diagram of the fire alarm system according to the present embodiment.
The fire alarm system according to the first embodiment of the present invention includes a fire alarm 10 that detects a fire and notifies a user, and a fire detector 10 that is structurally connected to the fire alarm 10 and detects a fire from the fire alarm 10. And a fire alarm bracket 20 that notifies the user in synchronization with the notification of the fire alarm 10.

[1.1 General configuration of fire alarm]
The fire alarm 10 includes a sensing unit 11 disposed in an upper central portion, a circuit board 12 electrically connected to the sensing unit 11, a piezoelectric buzzer 13 for alerting an alarm sound, and electric power to each electrical component. It consists of a battery 14 to be supplied and an outer case 15 that houses them.
The outer peripheral surface of the bottom portion of the outer case 15 is formed with a male screw. A flat metal piece 15 a electrically connected to the circuit board is disposed in the recess formed in the center of the bottom surface of the outer case 15.
A piezoelectric buzzer 13 is provided on the inner surface of the upper portion of the outer case 15 to notify an alarm sound in response to power supply from the circuit board 12 to be electrically connected. The exterior case 15 portion with which the piezoelectric buzzer 13 is in contact is formed with stripe-shaped holes in order to efficiently output an alarm sound from the piezoelectric buzzer 13.

A small-diameter hole is formed in the upper part of the outer case 15, and a plastic with high permeability is fitted into the small hole. The LED 16 is disposed on the circuit board 12 so that the top portion of the LED 16 is aligned with the small hole when disposed on the inner wall of the exterior case 15.
A switch 17 is provided on the bottom surface of the outer case 15, and a part of the circuit board 12 is turned on when the switch is pressed. Specifically, the switch 17 has an external contact switch piece 17b at one end of a small rod 17a and a circuit board contact switch metal piece 17c at the other end, and a spring 17d is inserted into the small rod 17a. When the user depresses the external switch piece 17b, the spring 17d is retracted, and the circuit board contact switch metal piece 17c is brought into contact with a part of the circuit board 12 to be put in.

[1.2 Outline configuration of fire alarm bracket]
The fire alarm bracket 20 includes a strobe 21 for informing alarm light, a piezoelectric buzzer 22 for informing alarm sound, a circuit board 23 electrically connected to the strobe 21, and a battery 24 for supplying power to each electrical component. And an outer case 25 for interiorizing them.
An internal thread is formed on the inner wall surface of the concave fire alarm receiver 25 a at the top of the outer case 25. A flat metal piece 25b is surface-mounted on the circuit board 23 at the convex portion formed at the center of the bottom of the fire alarm receiver 25a.

  A piezoelectric buzzer 22 is provided on the inside of the upper right end of the outer case 25 in the same manner as the piezoelectric buzzer 13 is provided on the inner surface of the outer case 15. An alarm sound is notified according to the power supply from the circuit board 23 electrically connected. The exterior case 25 portion with which the piezoelectric buzzer 22 is in contact is formed with a stripe-shaped hole in order to efficiently output an alarm sound from the piezoelectric buzzer 22.

[1.3 Connection structure of fire alarm and fire alarm bracket]
The fire alarm 10 and the fire alarm bracket 20 are detachable, and the fire alarm 10 can be attached to the fire alarm bracket 20 disposed on the ceiling, which is structurally integrated. It becomes a shape.
The fire alarm 10 can be attached to and detached from the fire alarm bracket 20 by forming a screw connection structure with the female screw at the top of the outer case 25 and the male screw at the bottom 15 of the outer case. Further, in a state where the fire alarm 10 is attached to the fire alarm bracket 20, the flat metal piece 25 b of the fire alarm receiver 25 a of the outer case 25 and the flat metal piece 15 a of the bottom recess of the outer case 15 are electrically connected. Will be connected.

  In addition, in a state where the fire alarm 10 is attached to the fire alarm bracket 20, the horizontal center line of the piezoelectric buzzer 13 of the fire alarm 10 and the horizontal center line of the piezoelectric buzzer 22 of the fire alarm bracket 20 in the plan view The rotation stop of the screw is formed so that the vertical positions of the piezoelectric buzzer 13 of the fire alarm 10 and the piezoelectric buzzer 22 of the fire alarm bracket 20 are different in the plan view. By doing so, when the piezoelectric buzzer 13 of the fire alarm 10 and the piezoelectric buzzer 22 of the fire alarm bracket 20 notify the alarm sound at the same time, the generation of the resonance sound can be suppressed. Although it is necessary to prevent the horizontal position of the piezoelectric buzzer 13 of the fire alarm 10 and the piezoelectric buzzer 22 of the fire alarm bracket 20 from overlapping, in this embodiment, the shape of the fire alarm bracket 20 and the fire alarm The horizontal positions of the piezoelectric buzzer 13 of the fire alarm 10 and the piezoelectric buzzer 22 of the fire alarm bracket 20 do not overlap from the position of the receiver 25a.

  In addition to this, the horizontal center line of the battery 14 installed in the fire alarm 10 in the plan view and the fire alarm bracket 20 in the state where the rotation for screw fitting is stopped by the rotation of the screw is stopped. The horizontal center line of the battery 24 is also on the same straight line. By doing so, it is possible to make up the mutual power supply circuit with a compact configuration by arranging the batteries 14 and 24 in the vicinity, and to make up for the other battery even when the battery capacity of one battery is exhausted. . In particular, it is preferable that the mutual power supply circuit is separately formed by providing contacts on the fire alarm 10 and the fire alarm bracket 20.

When such a fire alarm 10 is attached to the fire alarm bracket 20, the electrical connection is complete, and the signal from the sensing unit 11 of the fire alarm 10 reaches the circuit board 12. In addition to reaching the circuit board 23, the strobe 21 and the piezoelectric buzzer 22 are also notified when a fire is detected.
The signal from the sensing unit 11 of the fire alarm 10 is received for a predetermined period, and the light emission of the strobe 21 and the alarm sound of the piezoelectric buzzer 22 are notified in synchronization.

[2. Explanation of components]
[2.1 Sensor]
The sensing unit includes a differential method, a heat sensing method, a smoke sensing method, and a flame sensing method. The differential type sensing unit includes a plus, a minus, a diaphragm, a leak hole, and an exterior case, and a contact is turned on when air inside the sensing unit expands to sense a fire. The heat sensing method is also called the constant temperature spot type sensing method. The sensing part of this method consists of plus, minus, heat receiving plate, circular bimetal and exterior case, and the contact is turned on when the temperature of the sensing part exceeds the threshold However, it can detect a fire. The smoke detection method is also called a photoelectric spot type detection method, and the detection unit of this method consists of a light emitting part, a light receiving part, a labyrinth wall and an exterior case, and when smoke enters the labyrinth part, more than a predetermined amount of smoke is emitted. The light from the light-emitting part reaches the light-receiving part due to diffused reflection caused by smoke particles entering and senses a fire. The flame detection method is also called ultraviolet spot type detection method or infrared spot type detection method. It consists of an ultraviolet sensor, an infrared sensor, and an exterior case. It is something to perceive.

[2.2 Sound notification means]
The sound notification means of the fire notification system according to the present embodiment includes the piezoelectric buzzer 13 of the fire alarm 10 and the piezoelectric buzzer 22 of the fire alarm bracket 20. The piezoelectric buzzer 22 outputs a sound range lower than that of the piezoelectric buzzer 13.
Further, as described above, the alarm sound output of the piezoelectric buzzer 13 and the alarm sound output of the piezoelectric buzzer 22 are synchronized, and the same synchronization in which the alarm sound outputs of the piezoelectric buzzer 13 and the piezoelectric buzzer 22 are the same. From a partial rest period synchronization that outputs an alarm sound of the piezoelectric buzzer 22 during a part of the rest period of the piezoelectric buzzer 13 and a total rest period synchronization that outputs an alarm sound of the piezoelectric buzzer 22 during all the rest periods of the piezoelectric buzzer 13. Become.

[2.2.1 Same synchronization]
FIG. 3 is a timing chart of the same synchronization of the alarm sound and the strobe of the fire alarm system according to the present embodiment.
If the sensing unit 11 is a smoke sensing system, smoke is generated, and after a while, light from the light emitting unit is diffusely reflected by the smoke and reaches the light receiving unit, and the sensing unit 11 outputs a sensing signal to the circuit board 12. The circuit board 12 that has received the sensing signal supplies power from the battery 14 to the piezoelectric buzzer 13 at a predetermined timing, and intermittently outputs an alarm sound. The predetermined timing is, for example, an alarm sound output period of 5 ± 0.3 [seconds] and a pause period of 1.5 ± 0.3 [seconds].

  In response to the alarm sound output from the piezoelectric buzzer 13, an alarm sound is output from the piezoelectric buzzer 22. That is, an alarm sound from the piezoelectric buzzer 22 is output when an alarm sound is output from the piezoelectric buzzer 13, and an alarm sound from the piezoelectric buzzer 22 is output when the output of the alarm sound from the piezoelectric buzzer 13 is stopped. Stop output. In order to synchronize in this way, a synchronization signal is output from the circuit board 12 to the circuit board 23 via the flat metal piece 15a and the flat metal piece 25b. Although the synchronization signal can be output only at the start time, it is preferable to output the synchronization signal every time in accordance with the output of the piezoelectric buzzer 13. Doing so minimizes synchronization disruptions. More specifically, a partial small voltage of the output voltage to the piezoelectric buzzer 13 is output to the circuit board 23 as a synchronization signal.

  Hearing loss, particularly sensorineural hearing loss, is often characterized by a high degree of hearing loss in a high frequency range, although the degree of deafness is not high in a low frequency range. Accordingly, even if the alarm sound of the piezoelectric buzzer 13 alone cannot be heard, the alarm sound of the piezoelectric buzzer 22 can be heard by outputting the alarm sound of the piezoelectric buzzer 22, and the alarm sound of the piezoelectric buzzer 13 alone can be heard to some extent. The person can hear the alarm sound more clearly.

[2.2.2 Partial suspension period synchronization]
FIG. 4 is a timing chart of the alarm sound and the strobe partial rest period synchronization of the fire alarm system according to the present embodiment.
The piezoelectric buzzer 13 outputs an alarm sound as in FIG. An alarm sound is output from the piezoelectric buzzer 22 according to a pause period of the alarm sound from the piezoelectric buzzer 13. That is, the alarm sound from the piezoelectric buzzer 22 is output when the output of the alarm sound from the piezoelectric buzzer 13 is stopped, and the alarm sound from the piezoelectric buzzer 22 is output when the output of the alarm sound from the piezoelectric buzzer 13 is resumed. Pause the output of. In order to synchronize in this way, a synchronization signal is output from the circuit board 12 to the circuit board 23 via the flat metal piece 15a and the flat metal piece 25b. The synchronization signal may be a signal according to the output of the alarm sound of the piezoelectric buzzer 13 or a signal according to a pause period of the alarm sound of the piezoelectric buzzer 13. In the former case, the circuit board 23 outputs an alarm sound of the piezoelectric buzzer 22 during the pause period of the synchronization signal, and in the latter case, the circuit board 23 outputs an alarm sound of the piezoelectric buzzer 22 during the output period of the synchronization signal.

  By doing in this way, since the alarm sound output of the piezoelectric buzzer 13 and the alarm sound output of the piezoelectric buzzer 22 do not overlap, the generation of resonance sound due to the alarm sound of the piezoelectric buzzer 13 and the alarm sound of the piezoelectric buzzer 22 is prevented. be able to. In particular, since the alarm sound of the piezoelectric buzzer 22 is output only in a part rather than the entire time of the pause period, there is a period in which the alarm sound is not output, and the alarm sound of the piezoelectric buzzer 13 and the alarm sound of the piezoelectric buzzer 22 are sounded. Even if there are few differences, it can be distinguished.

[2.2.3 Synchronization of all pauses]
FIG. 5 is a timing chart for synchronizing the alarm sound and strobe period of the fire alarm system according to the present embodiment. The difference from the partial pause period synchronization of FIG. 4 is that the alarm sound of the piezoelectric buzzer 22 is output during the entire pause period of the alarm sound output of the piezoelectric buzzer 13.
By doing in this way, a hearing-impaired person can hear the alarm sound which is easy to hear for many periods, preventing the generation | occurrence | production of the resonance sound by the alarm sound of the piezoelectric buzzer 13 and the alarm sound of the piezoelectric buzzer 22.

[2.3 Light emission notification means]
The light emission notification means (which can also be used as flash notification means) of the fire notification system according to the present embodiment is a strobe 21. A strobe light (flash bulb) is a light source that emits light for a short time using the good discharge characteristics of xenon gas. Other than strobe lights, incandescent lamps (halogen lamps) and discharge lamps (HID lamps, arc lamps, xenon lamps, fluorescent lamps, mercury lamps, sodium lamps) can also be used as long as they have a high notification capability. For example, the notification characteristics may be improved by applying a high voltage and using the light source with a high output.

In FIG. 3 (same synchronization of alarm sound), the strobe 21 is flashed in accordance with the output of the alarm sound of the piezoelectric buzzer 13.
In FIG. 4 (synchronization of a part of the alarm sound during the pause period) and FIG. 5 (synchronization of the entire period of the alarm sound), the strobe 21 is flashed in accordance with the output of the alarm sound of the piezoelectric buzzer 22.
Even if the strobe 21 is flashed in accordance with either the alarm sound output of the piezoelectric buzzer 13 or the alarm sound output of the piezoelectric buzzer 22, it is transmitted to the user as a flash of the strobe 21 corresponding to the alarm sound. easy.

[3. Mounting operation]
First, the fire alarm 10 is attached to the fire alarm bracket 20. Next, the fire alarm bracket mounting base 30 is mounted on the ceiling surface. Finally, the fire alarm bracket 20 integrated with the fire alarm 10 is attached to the fire alarm bracket mounting base 30. The mounting order here is an example, the fire alarm bracket mounting base 30 is attached to the ceiling surface, the fire alarm bracket 20 is attached to the fire alarm bracket mounting base 30, and the fire alarm 10 is attached to the fire alarm bracket 20. The order of attachment may be used.

[3.1 Attaching the fire alarm to the fire alarm bracket]
The male screw formed at the bottom of the fire alarm 10 is fitted to the female screw of the fire alarm receiver 25a of the fire alarm bracket 20 and rotated in the fastening direction until it is stopped to fix the screw. Thus, the fire alarm 10 and the fire alarm bracket 20 are connected in an integral shape.

[3.2 Attaching the fire alarm bracket bracket to the ceiling]
Screw the fire alarm bracket mounting base 30 to the ceiling. Two screw holes are formed on the bottom surface of the fire alarm bracket mounting base 30.

[3.3 Mounting the Fire Alarm Bracket to the Fire Alarm Bracket Mounting Base]
The edge surface of the fire alarm bracket receiving portion 31 on the upper part of the fire alarm bracket mounting base 30 is formed with a female screw. On the other hand, the bottom peripheral surface of the fire alarm bracket 20 is formed with a male screw. Therefore, the male screw of the fire alarm bracket 20 provided with the fire alarm 10 is fitted to the female screw of the fire alarm bracket mounting base 30 and rotated in the fastening direction until the screw is stopped to fix the screw. Thus, the fire alarm 10, the fire alarm bracket 20, and the fire alarm bracket mounting base 30 are connected in an integral shape.

[4. Use behavior]
From the time when the battery is set in the fire alarm 10, the sensing unit 11 starts sensing fire. Moreover, LED16 as an energizing lamp is also lit.
When a fire occurs, the sensing unit 11 outputs a fire sensing signal to the circuit board 12 due to, for example, the generation of smoke. The circuit board 12 outputs an alarm sound from the piezoelectric buzzer 13 and blinks the LED 16 as an operation light. At the same time, the circuit board 12 outputs a synchronization signal to the circuit board 23 of the fire alarm bracket 20. The circuit board 23 receiving the synchronization signal flashes the strobe 21 based on the synchronization signal, and outputs an alarm sound from the piezoelectric buzzer 22.

  In this way, when the fire alarm system is informing at the time of fire, when the user presses the switch 17, the local circuit of the circuit board 12 becomes conductive, and this is triggered by an alarm sound from the piezoelectric buzzer 13. The LED 16 stops blinking and the output of the synchronization signal is stopped. The circuit board 23 from which the synchronization signal is not input stops the flash of the strobe 21 and the alarm sound of the piezoelectric buzzer 22.

[4.1 Test operation]
When the user presses the switch 17 for a long time, the local circuit of the circuit board 12 becomes conductive, and a fire detection signal is output from the sensing unit 11 to the circuit board 12. Since the fire detection signal is output, the piezoelectric buzzer 13 normally outputs an alarm sound, the LED 16 blinks, the strobe 21 flashes, and the piezoelectric buzzer 22 outputs an alarm sound. Therefore, when a failure has occurred in the device, any of these notification components will not operate.
After pressing the switch 17 for a long time, pressing the switch 17 again returns from the test operation.

[5. Effects of the embodiment]
As described above, according to the fire alarm system according to the present embodiment, the fire alarm 10 that can be used alone is connected to the fire alarm bracket 20 so as to be notified by the piezoelectric buzzer 13 of the fire alarm 10. In addition, notification by the strobe 21 and the piezoelectric buzzer 22 of the fire notification bracket 20 is also made, and it is possible to realize a high notification property especially for the hearing impaired among the users. Further, since the alarm sound of the piezoelectric buzzer 13 and the flash light of the strobe 21 and the alarm sound of the piezoelectric buzzer 22 are outputted in synchronization, it becomes an integrated notification and an easy-to-understand notification is realized for the user. Further, since the alarm sound of the piezoelectric buzzer 22 lower than the alarm sound of the piezoelectric buzzer 13 is adopted, it is easy for the hearing impaired person to hear the alarm sound. Furthermore, although the fire alarm system includes the fire alarm 10 and the fire alarm bracket 20, since it has an integrated shape in the attached state, the aesthetic appearance is not impaired.

(Second embodiment of the present invention)
The fire alarm system according to the second embodiment of the present invention is configured in the same manner as the fire alarm system according to the first embodiment. The fire alarm bracket 20 also has a sensor, and the fire alarm signal is used as a parent. The point which outputs to a machine and the new connection form of the fire alarm 10 and the fire alarm bracket 20 are different.
FIG. 6 is a plan view of the fire alarm system according to the present embodiment and a sectional view in a removed state. FIG. 7 is a block diagram of the fire alarm system according to the present embodiment.

[1. Sensing part of fire alarm bracket]
The sensing unit 26 is disposed in the vicinity of the upper left end of the fire alarm bracket 20. The sensing unit 26 may be the same type as the sensing unit 11 of the fire alarm 10 or may be a sensing unit employing a different type. In the case where the sensing unit 26 is configured as a sensing unit of the same type, even when a fault occurs in one sensing unit, the other sensing unit operates, so that the reliability is high. Further, when the sensing unit 26 is configured as another type of sensing unit, not only the reliability is improved, but also the fire can be sensed more precisely regardless of the environment and fire conditions.

  In the first embodiment, the fire detection signal from the sensing unit 11 is output to the circuit board 12, but in this embodiment, the fire detection signal from the sensing unit 26 is output to the circuit board 23. The fire detection signal of the sensing unit 26 is also output to the circuit board 12, and the circuit board 12 receives this fire detection signal, outputs an alarm sound from the piezoelectric buzzer 13, flashes the LED 16, and strobes via the synchronization signal. 21 is flashed and an alarm sound is output from the piezoelectric buzzer 22. Here, although it demonstrated as a synchronous signal being output from the circuit board 12, the structure which outputs a synchronous signal from the circuit board 23 may be sufficient.

[2. Transfer]
A transfer signal line 27 is connected to the circuit board 23, and this transfer signal line 27 is connected to a flat metal piece 25 c disposed on the bottom surface of the fire alarm bracket 20. The flat metal piece 25c abuts the flat metal piece 31a disposed on the upper surface of the fire alarm bracket mounting base 30 in a state where the fire alarm bracket 20 is attached to the fire alarm bracket mounting base 30. The transfer signal line 32 extends to the flat metal piece 31a from the flat metal piece 31a of the fire alarm bracket mounting base 30 toward the bottom surface. One end of the transfer signal line 32 is connected to the flat metal piece 31a, and the other end of the transfer signal line 32 is connected to a master unit (not shown).

The master unit is electrically connected directly or indirectly to each fire alarm. When a fire is detected, the master unit receives a transfer signal from the corresponding fire alarm and is installed in the master unit itself. An alarm sound is output from the buzzer. Some master devices not only output an alarm sound but also display the location of the corresponding fire alarm as a fire location using an LED or liquid crystal display. Further, when there is a transfer signal from the corresponding fire alarm, the master unit transfers the transfer signal to the remaining fire alarms. The fire alarm that receives the transfer signal performs the same operation as when a fire is detected by each fire alarm.
In addition to the described fire detection signal, there is a test signal as the transfer signal. By transmitting this test signal from the master unit to each fire alarm, the test with each fire alarm can be performed.

[3. Connection form of other fire alarms and fire alarm brackets]
In the first embodiment, the external thread is formed on the bottom of the fire alarm 10 and the internal thread is formed on the top of the fire alarm bracket 20, but in this embodiment, the internal thread is formed only on the fire alarm bracket 20. . Two screw holes are formed on the bottom surface of the fire alarm 10. There is a detachable mounting plate 18 that is slightly larger than the bottom diameter of the fire alarm 10. Two holes are also formed in the attachment / detachment mounting plate 18. The hole of the attaching / detaching mounting plate 18 is aligned with the screw hole of the fire alarm 10 and fixed with screws. Then, the attachment / detachment mounting plate 18 slightly protrudes from the bottom surface of the fire alarm 10, and the fire alarm 10 is attached to the fire alarm bracket 20 by fitting the female screw of the fire alarm bracket 20 using this protruding portion. Screw.

[4. Effects of this embodiment]
As described above, according to the fire alarm system according to the present embodiment, since the sensing unit is disposed not only in the fire alarm but also in the fire alarm bracket, one of the sensing unit, the circuit board, and the piezoelectric buzzer is broken. Even in such a case, at least an alarm sound can be output, and the reliability is extremely high. In addition, a warning signal can be output at a remote location by outputting a transfer signal from the fire alarm system to the master unit. Furthermore, when attaching to the fire alarm bracket 20 without forming a male screw on the bottom peripheral surface of the fire alarm 10, the detachable mounting plate 18 can be attached and fitted to the fire alarm bracket 20, so that the fire The design change of the alarm device 10 is very small.

(Other embodiments)
[1. Connection form of other fire alarms and fire alarm brackets]
FIG. 8 is a plan view of a fire alarm system according to another embodiment, a schematic cross-sectional view in a detached state, and a plan view of a fire alarm bracket alone.
The fire alarm system of FIG. 8 is also configured similarly to the fire alarm system according to the first embodiment, and the fire alarm 10 has a substantially L-shape on the bottom surface of the fire alarm 10 instead of the flat metal piece 15a. A detachable terminal 19 is provided so as to form a detachable terminal receiver 28 having a substantially L-shaped cross section in the fire alarm receiver 25a instead of the flat metal piece 25b of the fire alarm bracket 20. A metal piece is exposed at the attachment / detachment terminal receptacle 28, and the attachment / detachment terminal 19 is fitted to the attachment / detachment terminal receptacle 28 and rotated in a predetermined direction, whereby the metal piece and the attachment / detachment terminal 19 are connected. The circuit board 12 and the circuit board 23 can exchange signals. The detachable terminal 19 and the detachable terminal receiver 28 are not only used for exchanging signals, but the fire alarm 10 and the fire alarm bracket 20 are connected by the engagement of the detachable terminal 19 and the detachable terminal receiver 28. Connected.

[2. Frequency change]
In the fire alarm system according to the first embodiment, the alarm sound of the piezoelectric buzzer 13 and the alarm sound of the piezoelectric buzzer 22 are low in the sound of the piezoelectric buzzer 22 and easy to hear for the hearing impaired. It is also possible to change the pitch of the 13 alarm sounds and the alarm sound of the piezoelectric buzzer 22. If the output period of the alarm sound of the piezoelectric buzzer 13 and the output period of the alarm sound of the piezoelectric buzzer 22 are set to one cycle, the sound can be lowered every cycle, and the sound is more easily heard by the hard of hearing. Can be shifted. Moreover, it can also be set as the structure which the sound pitch of the piezoelectric buzzers 13 and 22 changes within 1 period, for example, can also be set as the structure which makes the sound level of the piezoelectric buzzer 22 low.

FIG. 9B is a diagram showing that the pitch of the alarm sound of the piezoelectric buzzer 22 changes with each cycle.
Here, it has been explained that the pitch of the sound of the piezoelectric buzzer 22 is changed. However, it is also possible to change the volume of the sound of the piezoelectric buzzer, and the hearing-impaired person becomes easier to hear over time.

[3. Flash brightness change]
In the fire alarm system according to the first embodiment, the flash luminance of the strobe 21 is the same. However, the flash luminance can be changed, and the flash luminance increases as the period increases. It can also be set as the structure to do. By doing in this way, it is possible to be surely noticed even to a user who has not noticed. In addition, even a low-sighted person can be more surely noticed because the flash brightness increases.
FIG. 9C shows that the flash luminance of the strobe 22 changes with each period.

  In addition, a illuminance meter may be newly provided to measure the illuminance at the position where the fire alarm system is disposed, and the flash luminance corresponding to the measured value may be output from the strobe 21. Increasing the flash brightness of the strobe 21 even though the illuminance is low means that the user is sufficiently informed by the flash of the strobe 21 but the flash voltage with a higher applied voltage is informed. Power consumption. Therefore, the light is output at a flash brightness based on the measured illuminance so as not to cause unnecessary flash brightness.

[4. Flash color change]
In the fire alarm system according to the first embodiment, the flash color of the strobe 21 is not particularly described, but the flash color of the strobe 21 is normally white, but the flash color is changed sequentially using the color strobe. It can also be made. Color strobes are usually realized by rotating the cellophane in a revolver form using multiple color cellophanes.

[5. Configuration where there is no electrical connection between the fire alarm and the fire alarm bracket]
In the fire alarm system according to each of the embodiments described above, the fire alarm 10 and the fire alarm bracket 20 exchange signals between the circuit boards via the signal line and the metal piece, and the fire detection signal and the synchronization signal are transmitted. Although transmission / reception was performed, without using such a signal line and metal piece, the fire alarm bracket 20 includes a microphone to detect an alarm sound from the piezoelectric buzzer 13 of the fire alarm 10, and this detection signal Accordingly, the flash of the strobe 21 and the alarm sound of the piezoelectric buzzer 22 can be output. Moreover, it can also be set as the structure which exchanges the fire detection signal and synchronous signal which used the radio signal instead of wired communication.

  Although the present invention has been described with the above embodiments, the technical scope of the present invention is not limited to the scope described in the embodiments, and various modifications or improvements can be added to these embodiments. . And embodiment which added such a change or improvement is also contained in the technical scope of the present invention. This is apparent from the claims and the means for solving the problems.

It is the top view of the fire alarm system which concerns on the 1st Embodiment of this invention, and sectional drawing of a removal state. 1 is a block configuration diagram of a fire alarm system according to a first embodiment of the present invention. It is a timing chart of the same synchronization of the alarm sound and strobe of the fire alarm system according to the first embodiment of the present invention. It is a timing chart of the alarm sound of the fire alarm system according to the first embodiment of the present invention and the strobe partial pause period synchronization. It is a timing chart of the alarm sound of the fire alarm system according to the first embodiment of the present invention and the synchronization of all strobe periods. It is the top view of the fire alarm system which concerns on the 2nd Embodiment of this invention, and sectional drawing of a removal state. It is a block block diagram of the fire alarm system which concerns on the 2nd Embodiment of this invention. It is the top view of the fire alarm system which concerns on other embodiment of this invention, the schematic sectional drawing of a removal state, and the top view of a fire alarm bracket single-piece | unit. It is a timing chart of alarm sound and strobe of a fire alarm system according to another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fire alarm 11 Sensing part 12 Circuit board 13 Piezoelectric buzzer 14 Battery 15 Exterior case 15a Flat metal piece 16 LED
17 switch 17a small bar 17b external contact switch piece 17c circuit board contact switch metal piece 17d spring 18 detachable mounting plate 19 detachable terminal 20 fire alarm bracket 21 strobe 22 piezoelectric buzzer 23 circuit board 24 battery 25 outer case 25a fire alarm Receiving part 25b Flat metal piece 25c Flat metal piece 26 Sensing part 27 Transfer signal line 28 Removable terminal holder 30 Fire alarm bracket mounting base 31 Fire alarm bracket receiving part 31a Flat metal piece 32 Transfer signal line

Claims (7)

A sensing unit for detecting a fire with a sensor, a sound output unit for outputting sound by applying a voltage, an electric circuit unit for receiving a sensing signal from the sensing unit and applying a voltage to the sound output unit, and these sensing unit and sound output unit And a fire alarm having a case covering the electric circuit part,
A light output unit that outputs light by voltage application, an electric circuit unit that receives a signal from a sensing unit or an electric circuit unit of a fire alarm and applies a voltage to the light output unit, and covers the light output unit and the electric circuit unit A fire alarm bracket having a case to
A fire alarm system in which a case of a fire alarm is detachable from a case of the fire alarm bracket. A sensing unit for detecting a fire with a sensor, a sound output unit for outputting sound by applying a voltage, an electric circuit unit for receiving a sensing signal from the sensing unit and applying a voltage to the sound output unit, and these sensing unit and sound output unit And a fire alarm having a case covering the electric circuit part,
A sound output unit that outputs sound when voltage is applied, an electric circuit unit that receives a signal from a sensing unit or an electric circuit unit of a fire alarm, and applies a voltage to the sound output unit, and covers the sound output unit and the electric circuit unit A fire alarm bracket having a case to
A fire alarm system in which a case of a fire alarm is detachable from a case of the fire alarm bracket. A sensing unit for detecting a fire with a sensor, a sound output unit for outputting sound by applying a voltage, an electric circuit unit for receiving a sensing signal from the sensing unit and applying a voltage to the sound output unit, and these sensing unit and sound output unit And a fire alarm having a case covering the electric circuit part,
A light output unit that outputs light when voltage is applied, a sound output unit that outputs sound when voltage is applied, and a signal from a sensing unit or an electric circuit unit of a fire alarm device that receives voltage from the light output unit and / or the sound output unit A fire alarm bracket having an electric circuit part for applying the light, a case for covering the light output part, the sound output part and the electric circuit part,
A fire alarm system in which a case of a fire alarm is detachable from a case of the fire alarm bracket. The light output from the light output unit of the fire alarm bracket and / or the sound output from the sound output unit is output based on the sound output from the sound output unit of the fire alarm. The fire alarm system according to any one of the above. The fire alarm system according to any one of claims 1 to 4, wherein the fire alarm bracket further includes a sensing unit that senses a fire with a sensor. The fire notification system according to claim 5, wherein the detection unit of the fire alarm and the detection unit of the fire alarm bracket are realized by different fire detection methods. A fire alarm bracket having a light output unit that outputs light by voltage application, an electric circuit unit that applies a voltage to the light output unit, and a case that covers the light output unit and the electric circuit unit,
A sensing unit for detecting a fire with a sensor, a sound output unit for outputting sound by applying a voltage, an electric circuit unit for receiving a sensing signal from the sensing unit and applying a voltage to the sound output unit, and these sensing unit and sound output unit And a case of a fire alarm having a case covering the electric circuit part is detachable from the case of the fire alarm bracket,
A fire alarm bracket that receives a signal from a sensing part or an electric circuit part of the fire alarm and applies an electric voltage to the light output part of the electric circuit part of the fire alarm bracket.

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