WO2019188420A1

WO2019188420A1 - Audio device

Info

Publication number: WO2019188420A1
Application number: PCT/JP2019/010865
Authority: WO
Inventors: 向山　文祥; 高橋　秀晃; 舞珍坂
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2018-03-29
Filing date: 2019-03-15
Publication date: 2019-10-03
Also published as: EP3779907A4; TWI712996B; JP7002006B2; EP3779907B1; EP4089656A1; EP3779907A1; TW201942880A; JP2019175395A

Abstract

An objective of the present disclosure is, while avoiding impairment of outward appearances, to effect a reduction in evacuation times. Provided is an audio device comprising a control part, a first output part (11), a second output part, and a casing (4). The control part receives information relating to a specified event and determines whether the specified event has occurred. The first output part (11) outputs a sound as a notification of the occurrence of the specified event. The second output part outputs illumination light. The casing (4) comprises a base part which is anchored to a structure body (C1), and a front wall part (4B) which is positioned forward of the base part. The front wall part (4B) comprises a slit (9) in a front surface (40) thereof, said slit (9) being hollowed in a direction approaching the base part. The slit (9) comprises: an audio hole (H1) in a first region (91) in an inner surface (90) thereof, said audio hole (H1) being for guiding the sound externally to the casing (4); and a viewport (H2) in a second region (92) of the inner surface (90), said viewport (H2) being for guiding the illumination light externally to the casing (4).

Description

Sound equipment

The present disclosure relates generally to an audio device, and more particularly to an audio device that notifies that an external event such as a fire has occurred.

As a conventional example, a residential alarm device described in Patent Document 1 is illustrated. In this residential alarm, a smoke detector having a smoke inlet is opened at the center of the cover, and a fire is detected when smoke from the fire reaches a predetermined concentration. In addition, the house alarm has an acoustic hole on the lower left side of the smoke detection part in the cover, and a speaker is built in behind it to output an alarm sound and a voice message. The home alarm is installed on, for example, a wall surface of a living room or a bedroom of a house, and in the event of a fire, the fire is detected and an alarm is started.

JP 2010-49604 A

By the way, a residence guard (acoustic device) that can shorten the evacuation time of residents is desired. For example, it is conceivable to add another notification function in addition to the alarm sound, and perform both the output of the alarm sound and the execution of the notification function when a specific event occurs. However, if another notification function is newly provided in the home alarm, the appearance (aesthetic appearance) of the home alarm may be impaired.

The present disclosure has been made in view of the above-described reasons, and an object thereof is to provide an audio device capable of shortening the evacuation time while suppressing the appearance from being impaired.

The acoustic device according to one embodiment of the present disclosure is installed in a structure. The acoustic device includes a control unit, a first output unit, a second output unit, and a housing. The control unit receives information on the specific event and determines whether the specific event has occurred. The first output unit outputs a sound so as to notify the occurrence of the specific event when the control unit determines that the specific event has occurred. The second output unit outputs illumination light that illuminates a surrounding area according to the information. The housing houses the control unit, the first output unit, and the second output unit. The housing includes a base portion fixed to the structure and a front wall portion located on the front side of the base portion. The front wall portion has a slit recessed in a direction approaching the base portion on the front surface thereof. The slit has an acoustic hole that guides the sound to the outside of the housing in a first region on the inner surface, and a window hole that guides the illumination light to the outside of the housing on a second region of the inner surface. Have.

FIG. 1 is an external view of an audio device according to an embodiment. FIG. 2A is a front view of the above-described acoustic device, and FIG. 2B is a front view of a main part of the above-described acoustic device. FIG. 3 is a side view of the above acoustic device. FIG. 4 is a perspective view of a second output unit and a light guide member in the above-described acoustic device. FIG. 5 is a block configuration diagram of the above-described acoustic device. FIG. 6 is a diagram showing a state of the bedroom in which the above-described acoustic device is installed. FIG. 7 is a front view of a modification of the above-described acoustic device.

(1) Outline The following embodiment is only one of various embodiments of the present disclosure. The following embodiments can be variously modified according to the design or the like as long as the object of the present disclosure can be achieved. Each figure described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component in each figure does not necessarily reflect the actual dimensional ratio. Not exclusively.

As shown in FIG. 6, the acoustic device 1 of the present embodiment is installed on a structure C1 (a construction material such as a ceiling or a wall). As shown in FIG. 5, the acoustic device 1 includes a control unit 10, a first output unit 11, a second output unit 12, and a housing 4. The control unit 10 receives information on the specific event and determines whether the specific event has occurred.

Suppose here that "specific event" is a fire as an example. Therefore, the acoustic device 1 is, for example, a fire alarm device that outputs a sound such as an alarm sound when a fire occurs. However, the specific event is not limited to a fire as long as it is an alarm sound issue target, and may be a gas leak, a tsunami, an earthquake, a suspicious person intrusion, or the like.

As shown in FIG. 5, the acoustic device 1 of the present embodiment further includes a photoelectric sensor (detector 2) that detects smoke inside, but the detector 2 is a constant temperature that detects heat. It may be a sensor of the type. The detection unit 2 may be a separate body from the acoustic device 1. The control unit 10 of the audio device 1 may receive information on fire through communication with another audio device (fire alarm device) provided with a detection unit.

The acoustic device 1 is installed on one surface (ceiling surface or wall surface) of the structure C1 such as a room, bedroom, stairs, and corridor in a house. The house may be a detached house or an apartment house (apartment). Furthermore, the acoustic device 1 may be installed not only in a house but also in a non-residential structure C1 (ceiling surface or wall surface). Non-residential examples include office buildings, theaters, cinemas, public halls, amusement halls, complex facilities, restaurants, department stores, schools, hotels, inns, hospitals, nursing homes, kindergartens, libraries, museums, museums, underground malls, stations Including airports.

The first output unit 11 outputs an alarm sound so as to notify the occurrence of a fire when the control unit 10 determines that a fire that is a specific event has occurred. The 2nd output part 12 outputs the light which illuminates surrounding field R1 (refer to Drawing 6) according to the information about a fire. In addition, although the light of the 2nd output part 12 may be called "illumination light", the light of the 2nd output part 12 is weakness compared with the illumination light which a general lighting fixture outputs, and the evacuation route Is enough to illuminate The “surrounding region R1” referred to here is a region (for example, a floor surface) facing the ceiling surface when the acoustic device 1 is installed on the ceiling surface, but when the acoustic device 1 is installed on the wall surface, It is a region (for example, a wall surface) facing the wall surface.

The housing 4 accommodates the control unit 10, the first output unit 11, and the second output unit 12. The housing 4 has a base 4A (see FIG. 3) fixed to the structure C1, and a front wall 4B located on the front side of the base 4A. As shown in FIGS. 1 and 2A, the front wall portion 4B has a slit 9 that is recessed in the front surface 40 in a direction approaching the base portion 4A. The slit 9 guides an audible sound to the first region 91 of the inner surface 90 to the outside of the housing 4, and guides the illumination light to the second region 92 of the inner surface 90 to the outside of the housing 4. And a window hole H2.

この According to this configuration, not only alarm sound but also illumination light is output. Therefore, the evacuation time can be shortened. Moreover, since the acoustic hole H1 and the window hole H2 are provided in the inner surface 90 of the slit 9, these holes have a structure which is not conspicuous. Therefore, it is possible to shorten the evacuation time while suppressing the appearance from being deteriorated.

(2) Details (2.1) Overall Configuration Hereinafter, the overall configuration of the acoustic device 1 of the present embodiment will be described in detail. Here, the acoustic device 1 is a battery-type fire alarm as an example. However, the acoustic device 1 is a fire alarm device that is electrically connected to an external power source (for example, a commercial power system), and is driven by converting AC power (for example, an effective value of 100 V) supplied from the external power source into a DC current. There may be.

Hereinafter, as illustrated in FIG. 6, it is assumed that the acoustic device 1 is installed on the ceiling surface of the bedroom (one surface of the structure C1) in the residence of the resident 100 as an example. Thus, the vertical and horizontal directions of the acoustic device 1 will be described with reference to the vertical and horizontal arrows shown in FIG. These arrows are described only for the purpose of assisting the explanation, and are not accompanied by an entity. Further, these directions are not intended to limit the use direction of the acoustic device 1.

As shown in FIG. 5, the acoustic device 1 includes a control unit 10, a first output unit (sound output unit) 11, a second output unit (light output unit) 12, a detection unit 2, and a housing 4. For example, the battery 13, the operation unit 3, and the operation lamp 15 are further provided. Here, as an example, it is assumed that the acoustic device 1 is a single-type fire alarm and does not have a communication function for communicating with other fire alarms.

(2.2) Case The case 4 includes the control unit 10, the first output unit 11, the second output unit 12, the battery 13, the detection unit 2, and the circuit components constituting the control unit 10 and various circuits. A circuit board B1 (see FIG. 4) to be mounted is accommodated therein. Although illustration is omitted, the various circuits referred to here are, for example, an acoustic circuit, a first lighting circuit, a second lighting circuit, and a power circuit, which will be described later.

The housing 4 is made of a synthetic resin, for example, a flame retardant ABS resin. The housing 4 is formed in a flat cylindrical shape as a whole. As shown in FIG. 3, the housing 4 includes a case 4 H whose upper end is opened and a base 4 A. The base 4A is assembled so as to close the open upper end of the case 4H. The case 4H includes a front wall portion 4B (a lower wall portion in FIG. 1) and a side wall portion 4C.

The base 4A has a disk shape. The base 4A has a fixing portion, and is fixed to one surface (installation surface) of the structure C1 by the fixing portion. Specifically, the base portion 4A has, for example, a plurality of through holes (fixing portions) that can be inserted through the thickness direction and into which mounting screws can be inserted, and the base portion 4A is fixed to the ceiling surface with the mounting screws. It is possible. The base 4A and the case 4H are assembled by fitting the base 4A into the upper end of the case 4H while the base 4A is fixed to the ceiling surface.

The front wall portion 4B has a disc shape and is located on the front side (lower side in FIG. 1) of the base portion 4A. As shown in FIGS. 1 and 2A, the front wall portion 4B has a slit 9 that is recessed in a direction (upward direction) approaching the base portion 4A on the front surface 40 (lower surface in FIG. 1). As shown in FIG. 2A, the slit 9 has a shape along the outer periphery of the housing 4 when viewed from the front of the front wall portion 4B. For example, when viewed from the front of the front wall portion 4B, the slit 9 has an annular shape (closed shape) in which one end and the other end of the slit 9 in the circumferential direction of the outer periphery of the housing 4 are connected to each other. ing. A region R10 (see FIG. 2A) surrounded by the slit 9 exists on the front surface 40 of the front wall portion 4B. The center P1 of the region R10 coincides with the center of the outer periphery of the housing 4 when viewed from the front of the front wall portion 4B. Note that the term “match” here does not have to be exact match, but also includes what can be said to be coincidence by human visual recognition.

Particularly in this embodiment, the slit 9 is formed in an annular shape having a predetermined groove width when viewed from the front of the front wall portion 4B (downward in FIG. 1). That is, the outer appearance of the slit 9 is also annular in accordance with the circular outer periphery of the housing 4 when viewed from the front.

The slit 9 has an acoustic hole H1 and a window hole H2 in the first region 91 and the second region 92 of the inner surface 90, respectively. The acoustic hole H 1 is a hole for leading the alarm sound of the first output unit 11 to the outside of the housing 4, and faces the first output unit 11 in the housing 4. Further, the window hole H 2 is a hole for leading the illumination light of the second output unit 12 to the outside of the housing 4, and faces the second output unit 12 in the housing 4. The acoustic hole H1 and the window hole H2 in the slit 9 will be described in detail in the later section “(2.8) Acoustic hole and window hole”.

As shown in FIG. 3, the side wall part 4C protrudes from the peripheral edge E1 of the front wall part 4B toward the base part 4A. Note that the surface of the side wall portion 4C is not straight along the vertical direction, but is slightly inclined so that the diameter of the case 4H becomes smaller as it approaches the base portion 4A (upward) (see FIG. 3). In short, the diameter on the lower end side of the case 4H is slightly larger than the diameter on the upper end side of the case 4H.

The side wall 4C has an opening 41 through which fire smoke flows into the labyrinth (the detection space of the detection unit 2) provided in the housing 4. The opening 41 is composed of a plurality of through holes arranged along the circumferential direction of the housing 4. The housing | casing 4 has a partition wall which partitions the internal space into two upper and lower sides. The labyrinth and detection unit 2 is in the upper first space, and the control unit 10, the first output unit 11, the second output unit 12, the circuit board B1, and the like are in the lower second space.

Further, the casing 4 supports the operation section 3 so that the lower surface of the operation section 3 is exposed to the outside of the casing 4 at the front wall section 4B. The operation unit 3 receives an operation input from the outside. The operation unit 3 can be pushed upward by a pressing operation with a user's finger or the like. The operation unit 3 is a disk-shaped member having translucency. The operation unit 3 is disposed to face the operating lamp 15 accommodated in the housing 4. The operation unit 3 is configured to push a push button switch (not shown) housed in the housing 4 by a push operation.

In the present embodiment, the operation unit 3 is disposed in a region R10 surrounded by the slit 9 on the front surface 40 of the front wall 4B when viewed from the front of the front wall 4B. Here, as an example, the operation unit 3 is arranged on the right side of the center P1 of the region R10.

(2.3) First Output Unit The first output unit 11 outputs sound (sound wave). When the control unit 10 determines that a fire has occurred, the first output unit 11 outputs an alarm sound so as to notify the occurrence of the fire.

The 1st output part 11 is constituted by a speaker which converts an electric signal into sound. The speaker has a diaphragm and emits an alarm sound by mechanically vibrating the diaphragm in accordance with an electrical signal. The speaker is formed in a circular shape when viewed from the front and has a disk shape. The first output unit 11 outputs an alarm sound (for example, “beep” sound) under the control of the control unit 10. It is preferable that the 1st output part 11 outputs a warning sound by changing the magnitude | size (sound pressure level) of a warning sound. The alarm sound may include, for example, a sweep sound that is swept from a low tone to a high tone. The alarm sound may include a voice message such as “fire. Fire”. Here, it is assumed that the alarm sound is composed of a sweep sound and a voice message continuous with the sweep sound.

For example, circuit components constituting an acoustic circuit are mounted on the circuit board B1. The acoustic circuit includes a low-pass filter and an amplifier. When the acoustic circuit receives a PWM (Pulse Width Modulation) signal corresponding to the alarm sound generated by the control unit 10 in the event of a fire, it converts it into a sinusoidal sound signal with a low-pass filter and amplifies it with an amplifier. To be output from the first output unit 11.

The first output unit 11 outputs an alarm sound as a test even during operation check. The first output unit 11 outputs a voice message such as “normal” or “abnormal” according to the state of the audio device 1. The operation check can be executed by operating the operation unit 3 or pulling a drawstring (not shown) led out from the housing 4. When the replacement time of the battery 13 is approaching, the first output unit 11 may output a voice message notifying that effect. The battery 13 is a lithium battery, for example.

(2.4) Second Output Unit The second output unit 12 outputs illumination light. The second output unit 12 outputs illumination light that illuminates the surrounding region R 1 in accordance with information related to fire under the control of the control unit 10.

The second output unit 12 has one or more illumination white LEDs (Light Emitting Diodes) 12A mounted on the circuit board B1 as a light source (see FIG. 4: here two LEDs 12A). The second output unit 12 is turned off during normal times (when monitoring a fire), and starts turning on (outputs illumination light) when the control unit 10 determines that a fire has occurred.

Each LED 12A is configured as a package type LED in which at least one LED chip is mounted at the center of the mounting surface of the flat mounting substrate. The LED chip is preferably a blue light emitting diode that emits blue light from the light emitting surface, for example. The mounting surface of the substrate including the LED chip is covered with a sealing resin mixed with a fluorescent material that converts the wavelength of blue light emitted from the LED chip. The LED 12A is configured to emit white illumination light from the light emitting surface when a DC voltage is applied between the anode electrode and the cathode electrode. The color of the illumination light is not limited to white, and other light colors may be used. However, it is desirable not to cover the light color of the operating lamp 15.

Circuit parts constituting the first lighting circuit for lighting the LED 12A of the second output unit 12 are mounted on the circuit board B1. The first lighting circuit lights the LED 12 A using DC power discharged from the battery 13 under the control of the control unit 10. When the acoustic device 1 is electrically connected to a commercial power system, the first lighting circuit converts the AC power supplied from the power system into a DC current to light the LED 12A.

The light (illumination light) emitted from the second output unit 12 is led out of the housing 4 through the light guide member 8 (see FIG. 4). The light guide member 8 is formed of, for example, a transparent acrylic resin. The light guide member 8 has a bridge shape and is mounted on the circuit board B1. The exposed portion 80 at the lower end of the light guide member 8 faces the two LEDs 12A. The exposed portion 80 is inserted into the window hole H2 from the circuit board B1 side and exposed from the window hole H2 (see FIG. 2B). The light emitted from the LED 12A is led out of the window hole H2 through the exposed portion 80 of the light guide member 8, and the surrounding area R1 (here, the floor surface of the bedroom, the bed, etc.) is illuminated.

The second output unit 12 is lit on a trial basis during operation check. Similar to the first output unit 11, the operation check of the second output unit 12 can be performed by pressing the operation unit 3 or pulling the pull string.

(2.5) Operation lamp The operation lamp 15 has red LED15A (refer FIG. 5) mounted in circuit board B1 as a light source. The operation lamp 15 is turned off during normal times (when monitoring a fire), and starts blinking (or turned on) when the control unit 10 determines that a fire has occurred. The operation lamp 15 stops blinking under the control of the control unit 10 when the alarm sound is stopped.

Circuit parts constituting a second lighting circuit for blinking the LED 15A of the operation lamp 15 are mounted on the circuit board B1. The second lighting circuit blinks the LED 15 A using DC power discharged from the battery 13 under the control of the control unit 10. When the acoustic device 1 is electrically connected to a commercial power system, the second lighting circuit converts AC power supplied from the power system into DC current, and causes the LED 15A to blink.

The light emitted from the operation lamp 15 is led out of the housing 4 through the operation unit 3 having translucency. The resident 100 can know that the acoustic device 1 is operating (detecting a fire) by visually recognizing the operation unit 3 blinking in red. The operating lamp 15 blinks even during operation check. As with the first output unit 11, the operation check of the operation lamp 15 can be executed by pushing the operation unit 3 or pulling the pull string. The operation lamp 15 also blinks when the replacement time of the battery 13 is approaching or a failure occurs. When the operation unit 3 is operated while blinking, the first output unit 11 outputs a voice message notifying that the replacement time is approaching or that a failure has occurred.

(2.6) Detector The detector 2 detects a fire that is a specific event. Here, the detection part 2 is a photoelectric sensor (smoke detection part) which detects smoke as an example. As shown in FIG. 5, the detection unit 2 includes a light emitting unit 21 such as an LED and a light receiving unit 22 such as a photodiode. The light emitting unit 21 and the light receiving unit 22 are arranged in the labyrinth of the housing 4 so that the light receiving surface of the light receiving unit 22 deviates from the optical axis of the irradiation light of the light emitting unit 21. When a fire occurs, smoke can be introduced into the labyrinth through the opening 41 in the side wall 4C of the housing 4.

When there is no smoke in the labyrinth of the housing 4, the light emitted from the light emitting unit 21 hardly reaches the light receiving surface of the light receiving unit 22. On the other hand, when smoke is present in the labyrinth of the housing 4, the irradiation light of the light emitting unit 21 is scattered by the smoke, and a part of the scattered light reaches the light receiving surface of the light receiving unit 22. That is, the detection unit 2 receives the irradiation light of the light emitting unit 21 scattered by the smoke by the light receiving unit 22.

The detection unit 2 is electrically connected to the control unit 10. The detection unit 2 transmits an electric signal (detection signal) indicating a voltage level corresponding to the amount of light received by the light receiving unit 22 to the control unit 10. The control unit 10 converts the light amount of the detection signal received from the detection unit 2 into a smoke concentration (event level) and determines fire. The detection unit 2 may transmit a detection signal indicating a voltage level corresponding to the smoke density to the control unit 10 after converting the amount of light received by the light receiving unit 22 into a smoke density. Alternatively, the detection unit 2 may determine the occurrence of fire (smoke) from the amount of light received by the light receiving unit 22 and transmit a detection signal including information that a fire has occurred to the control unit 10.

(2.7) Control Unit The control unit 10 is composed of, for example, a microcomputer having a CPU (Central Processing Unit) and a memory as main components. In other words, the control unit 10 is realized by a computer having a CPU and a memory, and the computer functions as the control unit 10 when the CPU executes a program stored in the memory. The program is recorded in advance in the memory here, but may be provided by being recorded through a telecommunication line such as the Internet or in a non-temporary recording medium such as a memory card.

The control unit 10 controls the first output unit 11, the acoustic circuit, the second output unit 12, the operation lamp 15, the first lighting circuit, the second lighting circuit, the detection unit 2, and the like. The control unit 10 also controls a power supply circuit that generates operating power for various circuits from the DC power of the battery 13.

The control unit 10 is configured to receive information on a fire that is a specific event and determine whether or not a fire has occurred. Specifically, the control unit 10 monitors a detection signal (information) received from the detection unit 2 and determines whether or not the event level included in the detection signal exceeds a threshold value. As described above, the event level is the smoke density after conversion as an example. However, the event level may be a light amount.

The control unit 10 stores a threshold value in its own memory. The control unit 10 may determine, for example, whether or not the smoke density periodically exceeds a threshold at a predetermined time interval, and may determine that a fire has occurred once the smoke density exceeds the threshold. The predetermined time interval is, for example, a 5-second interval. Alternatively, the control unit 10 may count the number of times that the smoke concentration has continuously exceeded the threshold, and may determine that a fire has occurred when the number of times reaches a specified number. Of course, if the control part 10 receives the detection signal containing the information that the fire broke out from the detection part 2, you may determine that the fire broke out directly.

When the control unit 10 determines that a fire has occurred based on the smoke concentration, the control unit 10 starts to output an alarm sound from the first output unit 11. Specifically, the control unit 10 generates a PWM signal corresponding to a sweep sound whose frequency changes linearly with the passage of time, and outputs the PWM signal to the acoustic circuit. The PWM signal is converted into an audio signal by an acoustic circuit, and a sweep sound (alarm sound) is output from the first output unit 11. Moreover, the control part 10 produces | generates the PWM signal corresponding to an audio | voice message based on the message data memorize | stored in own memory, and outputs it to an acoustic circuit. The PWM signal is converted into an audio signal by an acoustic circuit, and an audio message (alarm sound) is output from the first output unit 11.

When the control unit 10 determines that a fire has occurred, the control signal for lighting the second output unit 12 is sent to the first lighting circuit, and the control signal for blinking the operating lamp 15 is sent to the second lighting circuit. Send each one. When receiving the control signal from the control unit 10, the first lighting circuit lights the second output unit 12 with a certain brightness. When receiving the control signal from the control unit 10, the second lighting circuit causes the operation lamp 15 to start operation blinking.

The control unit 10 determines the smoke concentration even during an alarm (while an alarm sound is being issued). If the smoke concentration falls below the reference value during the alarm, the control unit 10 stops generating the PWM signal, stops the output of the alarm sound by the first output unit 11, and sends the stop signal to the first lighting circuit and The light is transmitted to the second lighting circuit, and the light output from the second output unit 12 and the operation lamp 15 is also stopped. That is, when the control unit 10 determines that the fire (smoke) has disappeared, the control unit 10 automatically stops the output of the alarm sound, the output of the illumination light, and the blinking of the operation lamp 15.

Further, the control unit 10 stops the output of the alarm sound when the push button switch in the housing 4 is turned on by pressing the operation unit 3 during the alarm. If the resident 100 determines that the alarm of the audio device 1 is a false alarm, the alarm sound can be stopped by pressing the operation unit 3. The alarm sound can be stopped by pulling the drawstring.

On the other hand, when the push button switch in the housing 4 is turned on by a push operation to the operation unit 3 during a non-alarm, the control unit 10 executes a predetermined operation test for operation check. The operation test includes a sound output test of the first output unit 11, a light output test of the second output unit 12, a blinking test of the operation lamp 15, and the like. The operation test can also be performed by pulling the drawstring.

Here, for example, when a fire occurs in a house at midnight, the resident 100 sleeping in the bedroom of the house wakes up from the bed in a state close to darkness after hearing an alarm sound and goes from the bed to the hallway. It may be difficult to instantaneously grasp the route and direction to the connected door. In addition, the resident 100 may go to the wall switch by searching in the dark and try to turn on the light in the bedroom. The action until the wall switch is turned on can lead to a delay in evacuation. In addition, if the resident 100 is a hearing impaired person, for example, there is a possibility that the occurrence of a fire may not be noticed only by an alarm sound (sound). On the other hand, since the acoustic device 1 outputs not only the alarm sound but also the illumination light of the second output unit 12, the resident 100 instantaneously takes a route (evacuation route) from the bed to the door connected to the hallway. And the possibility of saving time to turn on the lighting in the bedroom increases. Moreover, even if the resident 100 is a hearing impaired person, the possibility that a fire will be noticed by the illumination light of the second output unit 12 is increased. In short, since the acoustic device 1 outputs not only the alarm sound but also the illumination light, the evacuation time can be shortened.

(2.8) Acoustic hole and window hole Hereinafter, the acoustic hole H1 and the window hole H2 will be described in detail with reference to FIGS. 2A and 2B.

As described above, the acoustic hole H1 and the window hole H2 are respectively disposed in the first region 91 and the second region 92 of the inner surface 90 of the annular slit 9 having a predetermined groove width. As an example, the slit 9 of the present embodiment has a rectangular cross section cut along the radial direction of the front wall portion 4 B, and the first region 91 and the second region 92 have a bottom surface 900 ( FIG. 2B) is a partial region. Accordingly, when viewed from the front of the front wall portion 4B, the acoustic hole H1 and the window hole H2 can be seen.

However, at least one of the first region 91 and the second region 92 may be a partial region of the first inner side surface 901 (see FIG. 2B) on the center P1 side of the region R10 in the inner surface 90, or the peripheral edge It may be a partial region of the second inner side surface 902 (see FIG. 2B) on the E1 side. Further, at least one of the first region 91 and the second region 92 is a region extending over both the bottom surface 900 and the first inner side surface 901 (or the second inner side surface 902), or the bottom surface 900 and the first inner side surface 901. It may be a region extending over the entire area with the second inner surface 902. The cross section of the slit 9 is not limited to being recessed in a rectangular shape, and may be recessed, for example, in a V shape.

Each of the acoustic hole H1 and the window hole H2 is provided on the bottom surface 900 of the slit 9 as described above, and the width dimension of these holes is the same as the width dimension of the slit 9. In particular, each of the acoustic hole H1 and the window hole H2 is also curved in an arc shape with the center P1 of the region R10 as the center of the circle in accordance with the shape of the bottom surface 900 of the slit 9. The acoustic hole H1 and the window hole H2 have opening areas having the same shape and size. Here, as an example, the length in the circumferential direction of each of the acoustic hole H1 and the window hole H2 is substantially equal to the diameter of the operation portion 3 when viewed from the front of the front wall portion 4B. However, the length in the circumferential direction of each of the acoustic hole H1 and the window hole H2 may be, for example, about one third of the length in the circumferential direction of the slit 9, or one quarter.

As shown in FIG. 2A, the acoustic hole H1 is provided so that the acoustic hole H1, the center P1, and the operation part 3 are arranged in a line when viewed from the front of the front wall portion 4B (see FIG. 2A). Virtual line A1). On the other hand, the window hole H2 is provided on a virtual line A2 that is perpendicular to the virtual line A1 and passes through the center P1 when viewed from the front of the front wall portion 4B. In the illustrated example, the window hole H2 is located behind the center P1, but may be located closer to the front than the center P1. Further, the relative positional relationship among the acoustic hole H1, the window hole H2, the center P1, and the operation unit 3 in the illustrated example is also an example. For example, the position of the acoustic hole H1 and the position of the window hole H2 may be interchanged. Further, the window hole H2 may also be provided on the right side of the operation unit 3 on the virtual line A1.

As described above, in this embodiment, not only the alarm sound but also the illumination light is output, and the acoustic hole H1 and the window hole H2 are provided in the inner surface 90 of the slit 9, so that these holes are not easily noticeable. It has a structure. That is, when the acoustic device 1 is installed on the structure C1 such as the ceiling of a house, for example, it is possible to make it difficult to give an impression that the acoustic hole H1 and the window hole H2 are emphasized to the structure C1. Therefore, the evacuation time can be shortened while suppressing the appearance of the acoustic device 1 from being deteriorated.

Further, since the window hole H2 from which the illumination light is radiated is in the slit 9, the glare given to the resident 100 can be suppressed. The acoustic device 1 may be installed on a wall surface other than the ceiling surface, for example. In this case, since the acoustic hole H1 and the window hole H2 are provided in the inner surface 90 of the slit 9, it is possible to suppress the possibility that foreign matters such as dust enter the housing 4 from these holes.

Moreover, since the slit 9 has a shape along the outer periphery of the housing 4, the slit 9 having a sense of unity with the housing 4 can be provided, and the acoustic hole H 1 and the window hole H 2 have a less noticeable structure. . Further, the center P1 of the region R10 surrounded by the slit 9 coincides with the center of the outer periphery of the housing 4 when viewed from the front of the front wall portion 4B. 9 can be provided.

Further, since the operation unit 3 is disposed in the region R10 surrounded by the slit 9 when viewed from the front of the front wall 4B, the slit 9 having a sense of unity with the housing 4 and the operation unit 3 is provided. In other words, the acoustic hole H1 and the window hole H2 are more inconspicuous.

Further, since the slit 9 is annular, the slit 9 having a sense of unity with the housing 4 can be provided. In particular, since the outer periphery of the housing 4 has a circular shape and the slit 9 has an annular shape that is concentric with the outer periphery of the housing 4, it is possible to provide the slit 9 with a more integrated feeling.

If the slit 9 is not provided in the front wall portion 4B, the positional relationship and the dimensional relationship in which the acoustic hole and the hole for the optical window are as inconspicuous as possible with respect to the front surface 40 of the front wall portion 4B are considered. This may limit the degree of design freedom. However, since the slit 9 is provided as in the present embodiment, if the inner surface 90 of the slit 9 is provided, the positional limitation on the first region 91 and the second region 92 and the limitation on the length in the circumferential direction are performed. The degree of freedom in designing the acoustic hole H1 and the window hole H2 can be increased.

Incidentally, the exposed portion 80 of the light guide member 8 is inserted into the window hole H2 from the circuit board B1 side as described above. Further, as shown in FIG. 2B, the exposed portion 80 is curved in an arc shape with substantially the same shape as the opening region of the window hole H2 when viewed from the front of the front wall portion 4B, and the opening of the window hole H2 It has dimensions slightly smaller than the area. The surface (lower surface) of the exposed portion 80 is substantially flush with the bottom surface 900 of the slit 9. Therefore, the light emitted from the second output portion 12 can be efficiently derived through the exposed portion 80 of the light guide member 8 inserted into the window hole H2.

(2.9) Structure on the Outside of the Case Hereinafter, the structure on the outside of the case 4 will be described in detail with reference to FIG.

The front surface 40 of the front wall portion 4B of the present embodiment is inclined so as to approach the base portion 4A as it goes from the center P2 toward the peripheral edge E1. Specifically, the front surface 40 has a gently curved shape with the center P2 as a vertex when the housing 4 is viewed from the side. The “center P2” of the front surface 40 referred to here coincides with the center P1 of the region R10 surrounded by the slit 9.

Since the front wall portion 4B has such a front surface 40, when the entire casing 4 is viewed, the vertical dimension of the casing 4 in the vicinity of the peripheral edge E1 appears thin, and the overall thickness is thin. The housing 4 can be provided. By having such a thin housing 4, the acoustic device 1 becomes less conspicuous with respect to the structure C 1.

Moreover, the opening 41 of the side wall 4C of the present embodiment has a tapered surface T1 that guides the inflow of fire smoke at the opening edge. The opening edge includes a first edge 411 on the base portion 4A side and a second edge 412 on the front wall portion 4B side. The tapered surface T 1 is at least at the second edge 412 of the first edge 411 and the second edge 412. In the illustrated example, as an example, the tapered surface T 1 is on both the first edge 411 and the second edge 412. The lower tapered surface T1 is an inclined surface that is inclined so as to approach the detection space (labyrinth) in the housing 4 as it approaches the base 4A. The upper tapered surface T1 is an inclined surface that is inclined so as to approach the detection space (labyrinth) of the housing 4 as the distance from the base 4A increases. Note that the lower tapered surface T1 has a larger area and a longer vertical length than the upper tapered surface T1.

Since the side wall portion 4C has such a tapered surface T1, fire smoke is more likely to flow into the detection space in the housing 4, and the fire detection performance can be improved. Further, the tapered surface T1 on both the first edge 411 and the second edge 412 makes the side wall portion 4C look narrow, and the appearance of the acoustic device 1 is also improved.

Particularly, the portion D1 from the lower end of the lower tapered surface T1 to the peripheral edge E1 in the side wall portion 4C becomes thinner due to the presence of the tapered surface T1. Therefore, while improving the detection performance of fire smoke, a thin appearance is obtained from the peripheral edge E1 of the front wall portion 4B to the second edge 412, and the appearance is improved.

(3) Modified Examples Below, several modified examples are listed. Hereinafter, the above-described embodiment is referred to as a “basic example”. Each of the modifications described below can be applied in appropriate combination with the basic example and / or other modifications described above.

The slit 9 of the basic example has an annular shape when viewed from the front of the front wall portion 4B. However, the slit 9 may be a polygonal annular shape in addition to the annular shape. For example, when the outer peripheral shape of the housing 4 when viewed from the front is a regular hexagonal shape or a regular octagonal shape, the appearance of the slit 9 is also a regular hexagonal or regular octagonal shape in accordance with the outer peripheral shape. May be.

The slit 9 of the basic example has a shape that matches the outer peripheral shape of the housing 4. However, it is not essential to match the shape of the slit 9 to the outer peripheral shape of the housing 4. For example, the slit 9 may be a regular octagonal ring with respect to the casing 4 having a circular outer peripheral shape.

In the basic example, the number of each of the acoustic holes H1 and the window holes H2 is one, but may be two or more. For example, the two acoustic holes H 1 may be arranged along the circumferential direction of the slit 9. For example, two window holes H2 may be provided on both left and right ends of the slit 9 so as to sandwich the center P1 therebetween. Further, the number of acoustic holes H1 and the number of window holes H2 may be different from each other.

The slit 9 in the basic example is one closed ring. However, the slit 9 may not be a closed ring. For example, the slit 9 may have a partially opened shape, or may have a C shape, for example, when viewed from the front of the front wall portion 4B.

Further, as in the acoustic device 1A of the modification shown in FIG. 7, the slit 9 may be composed of a plurality of small slits 9X (two in the example of FIG. 7). In this case, the two small slits 9X are arranged along the outer periphery of the housing 4 when viewed from the front of the front wall portion 4B. Also in the modified example of FIG. 7, the acoustic hole H1 and the window hole H2 are inconspicuous. Here, both the acoustic hole H1 and the window hole H2 are provided in one C-shaped small slit 9X, but one of these holes may be provided in the other small slit 9X. .

Alternatively, one or a plurality of dummy slits may be provided separately from the slit 9. For example, the dummy slit may have an annular shape concentric with the slit 9 and may have a smaller diameter (or larger diameter) than the slit 9. In this case, the dummy slit is disposed inside the slit 9. By providing the dummy slit in this way, it is difficult to give an impression that the (main) slit 9 is provided with the acoustic hole H1 and the window hole H2.

The acoustic device 1 of the basic example was a single type fire alarm. That is, the acoustic device 1 of the basic example does not have a communication function for communicating with other fire alarms. However, the acoustic device 1 may be an interlocking fire alarm having a communication function for communicating with other fire alarms. Communication may be performed wirelessly or may be performed by wire.

Also, the audio device 1 may be configured to be able to communicate with devices other than the fire alarm. Devices other than the fire alarm are, for example, a portable terminal (for example, a smartphone) carried by the resident 100, a security monitoring device installed in a house, and the like.

(4) Advantages As described above, the acoustic device (1, 1A) according to the first aspect is installed in the structure (C1). The acoustic device (1, 1A) includes a control unit (10), a first output unit (11), a second output unit (12), and a housing (4). The control unit (10) receives information on the specific event and determines whether the specific event has occurred. The first output unit (11) outputs a sound so as to notify the occurrence of the specific event when the control unit (10) determines that the specific event has occurred. A 2nd output part (12) outputs the illumination light which illuminates the surrounding area | region (R1) according to the said information. A housing | casing (4) accommodates a control part (10), a 1st output part (11), and a 2nd output part (12). The housing (4) has a base (4A) fixed to the structure (C1) and a front wall (4B) located on the front side of the base (4A). The front wall (4B) has a slit (9) that is recessed in a direction approaching the base (4A) on the front surface (40). The slit (9) has an acoustic hole (H1) for guiding the sound to the outside of the housing (4) in the first region (91) of the inner surface (90), and a second region (92) of the inner surface (90). ) Has a window hole (H2) for guiding the illumination light to the outside of the housing (4). According to the first aspect, not only the sound (alarm sound) is output but also the illumination light is output, and the acoustic hole (H1) and the window hole (H2) are provided on the inner surface (90) of the slit (9). Therefore, these holes are inconspicuous. Therefore, it is possible to shorten the evacuation time while suppressing the appearance from being deteriorated.

Regarding the acoustic device (1, 1A) according to the second aspect, in the first aspect, the slit (9) extends along the outer periphery of the housing (4) when viewed from the front of the front wall (4B). It is preferable that the shape is different. According to the 2nd aspect, the slit (9) with a sense of unity with a housing | casing (4) can be provided, and an acoustic hole (H1) and a window hole (H2) become a structure which is not conspicuous.

Regarding the acoustic device (1) according to the third aspect, in the second aspect, when the slit (9) is viewed from the front of the front wall (4B), the slit (9) in the circumferential direction of the outer periphery is It is preferable that one end and the other end have an annular shape connected to each other. According to the third aspect, it is possible to provide the slit (9) having a sense of unity with the housing (4). Moreover, the design freedom of the acoustic hole (H1) and the window hole (H2) in the slit (9) can be increased.

In the acoustic device (1A) according to the fourth aspect, in the second aspect, the slit (9) is preferably composed of a plurality of small slits (9X). The plurality of small slits (9X) are preferably arranged along the outer periphery when viewed from the front of the front wall portion (4B). According to the fourth aspect, the acoustic hole (H1) and the window hole (H2) are less noticeable.

In the acoustic device (1, 1A) according to the fifth aspect, in any one of the second to fourth aspects, the center (P1) of the region (R10) surrounded by the slit (9) is the front wall. When viewed from the front of the portion (4B), it is preferable to coincide with the center of the outer periphery. According to the fifth aspect, it is possible to provide the slit (9) having a sense of unity with the housing (4).

In the acoustic device (1, 1A) according to the sixth aspect, in any one of the second to fifth aspects, it is preferable that the acoustic device (1, 1A) further includes an operation unit (3) that receives an operation input from the outside. When viewed from the front of the front wall portion (4B), the operation portion (3) is disposed in a region (R10) surrounded by the slit (9) on the front surface (40) of the front wall portion (4B). It is preferable. According to the sixth aspect, the slit (9) having a sense of unity with the housing (4) and the operation unit (3) can be provided, and the acoustic hole (H1) and the window hole (H2) are less noticeable. Become.

With regard to the acoustic device (1, 1A) according to the seventh aspect, in any one of the first to sixth aspects, the front surface (40) of the front wall portion (4B) has a peripheral edge ( It is preferable to incline so that it may approach a base part (4A), so that it goes to E1). According to the 7th aspect, a thin housing | casing (4) can be provided as a whole, and an acoustic apparatus (1, 1A) becomes difficult to stand out with respect to a structure (C1).

Regarding the acoustic device (1, 1A) according to the eighth aspect, in any one of the first to seventh aspects, the specific event is preferably a fire. It is preferable that the acoustic device (1, 1A) further includes a detection unit (2) that is housed in the housing (4) and detects a fire. The control unit (10) preferably receives the detection result from the detection unit (2) as the information and determines whether or not a fire has occurred. According to the 8th aspect, the acoustic apparatus (1, 1A) with a detection part (2) which can aim at shortening of an evacuation time can be provided, suppressing that the external appearance looks impaired.

Regarding the acoustic device (1, 1A) according to the ninth aspect, in the eighth aspect, the detection unit (2) is preferably a smoke detection unit. The housing (4) preferably further includes a side wall portion (4C) protruding from the peripheral edge (E1) of the front wall portion (4B) toward the base portion (4A). The side wall (4C) preferably has an opening (41) that allows fire smoke to flow into the detection space of the smoke detector (detector 2) in the housing (4). The opening (41) preferably has a tapered surface (T1) for guiding the inflow of fire smoke at the opening edge. According to the ninth aspect, the fire smoke detection performance can be improved by the tapered surface (T1).

Regarding the acoustic device (1, 1A) according to the tenth aspect, in the ninth aspect, the opening edge includes a first edge (411) on the base part (4A) side and a front wall part (4B) side. A second edge (412). The tapered surface (T1) is preferably at least on the second edge (412) of the first edge (411) and the second edge (412). According to the tenth aspect, the tapered surface (T1) improves the fire smoke detection performance, and has a thin appearance from the peripheral edge (E1) of the front wall portion (4B) to the second edge (412). The appearance can also be improved.

The configurations according to the second to tenth aspects are not essential to the acoustic device (1, 1A) and can be omitted as appropriate.

DESCRIPTION OF

SYMBOLS

1, 1A sound apparatus 10 Control part 11 1st output part 12 2nd output part 2 Detection part 3 Operation part 4 Case 4A Base part 4B Front wall part 4C Side wall part 40 Front surface 41 Opening part 411 1st edge 412 2nd edge 9 Slit 90 Inner surface 91 First region 92 Second region 9X Small slit C1 Structure E1 Front wall edge H1 Acoustic hole H2 Window hole P1 Center P2 Center R1 Surrounding region R10 Region T1 Tapered surface

Claims

An acoustic device installed in a structure,
A control unit that receives information on a specific event and determines whether the specific event has occurred;
A first output unit that outputs a sound so as to notify the occurrence of the specific event when the control unit determines that the specific event has occurred;
A second output unit that outputs illumination light that illuminates a surrounding area according to the information;
A housing that houses the control unit, the first output unit, and the second output unit;
With
The housing includes a base fixed to the structure, and a front wall located on the front side of the base,
The front wall portion has a slit recessed in a direction approaching the base portion on the front surface thereof,
The slit is
An acoustic hole for guiding the sound to the outside of the housing in a first region of the inner surface;
A window hole for guiding the illumination light to the outside of the housing in the second region of the inner surface;
Having
Acoustic device.
The slit has a shape along the outer periphery of the housing when viewed from the front of the front wall.
The acoustic device according to claim 1.
The slit has an annular shape in which one end and the other end of the slit in the circumferential direction of the outer periphery are connected to each other when viewed from the front of the front wall portion.
The acoustic device according to claim 2.
The slit is composed of a plurality of small slits,
The plurality of small slits are arranged along the outer periphery when viewed from the front of the front wall portion.
The acoustic device according to claim 2.
The center of the region surrounded by the slit coincides with the center of the outer periphery when viewed from the front of the front wall.
The acoustic device according to any one of claims 2 to 4.
An operation unit for receiving an operation input from the outside is further provided,
When viewed from the front of the front wall portion, the operation portion is disposed in a region surrounded by the slit on the front surface of the front wall portion.
The acoustic device according to any one of claims 2 to 5.
The front surface of the front wall portion is inclined so as to approach the base portion from the center toward the periphery.
The acoustic device according to any one of claims 1 to 6.
The specific event is a fire,
A detector that is housed in the housing and detects the fire;
The control unit receives a detection result from the detection unit as the information and determines whether or not the fire has occurred.
The acoustic device according to any one of claims 1 to 7.
The detection unit is a smoke detection unit,
The housing further includes a side wall portion projecting from a peripheral edge of the front wall portion toward the base portion,
The side wall has an opening that allows fire smoke to flow into the detection space of the smoke detector in the housing,
The opening has a tapered surface that guides the inflow of the fire smoke at the opening edge thereof,
The acoustic device according to claim 8.
The opening edge includes a first edge on the base side and a second edge on the front wall side,
The tapered surface is at least at the second edge of the first edge and the second edge.
The acoustic device according to claim 9.