TWI712996B - Acoustic device - Google Patents

Abstract

The purpose of the present invention is to prevent the beauty of appearance from being damaged, and to shorten the evacuation time. The acoustic device (1) includes a control unit, a first output unit (11), a second output unit, and a housing (4). The control unit receives information related to the specific event and determines whether the specific event has occurred. The first output unit (11) outputs sound to notify the occurrence of a specific event. The second output unit outputs illumination light. The housing (4) has a base fixed to the structure (C1) and a front wall (4B) located on the front side of the base. The front wall portion (4B) has a slit (9) recessed toward the base portion on the front surface (40). The slit (9) has an acoustic hole (H1) in the first area (91) of the inner surface (90) to guide the above-mentioned sound to the outside of the casing (4), and is in the second area of the inner surface (90) (92) It has a window (H2) that leads the above-mentioned illuminating light to the outside of the housing (4).

Description

Sound device

The present invention generally relates to an audio device, and more specifically, relates to an audio device that notifies an external event such as a fire.

As a previous example, the alarm device described in Document 1 (JP2010-49604A) is exemplified. The siren is equipped with a smoke detection part in the center of the protective cover that opens the smoke inlet to detect the fire when the smoke generated by the fire reaches a specific concentration. In addition, the siren has an audio hole on the lower left side of the smoke detection part of the protective cover, and a speaker is built in the back to output alarm sounds and voice messages. Residential alarms are installed on walls such as living rooms and bedrooms of houses, and when a fire occurs, it detects the fire and starts an alarm.

Of course, there is a need for a residential police device (audio device) that can further shorten the evacuation time of residents. For example, consider adding other notification functions 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, when it is desired to newly set other notification functions to the siren, it may damage the aesthetics (looks) of the siren.

The present invention has been completed in view of the above-mentioned reasons, and its object is to provide an audio device that can suppress damage to the aesthetics of the appearance and shorten the evacuation time.

An audio device of one aspect of the present invention is installed in the structure. The audio device described above includes a control unit, a first output unit, a second output unit, and a housing. The control unit receives information related to a specific event and determines whether the specific event has occurred. The first output unit outputs a sound to notify the occurrence of the specific event when the control unit determines that the specific event has occurred. The second output unit outputs illuminating light for illuminating the surrounding area based on the information. The casing houses the control unit, the first output unit, and the second output unit. The housing has 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 its front surface. The slit has an acoustic hole in the first area of the inner surface for guiding the sound to the outside of the casing, and the second area of the inner surface has a window hole for guiding the illuminating light to the outside of the casing .

(1) Summary The following embodiment is only one of various embodiments of the present invention. The following embodiments can be modified in various ways according to the design and the like as long as the purpose of the invention can be achieved. In addition, each of the drawings 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 size ratio.

As shown in FIG. 6, the acoustic device 1 of this embodiment is installed in the structure C1 (building materials 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 casing 4. The control unit 10 receives information related to a specific event and determines whether a specific event has occurred.

Here, the so-called "specified event" assumes fire as an example. Therefore, as an example, the audio device 1 is a fire alarm that outputs sounds such as a warning sound when a fire occurs. However, as long as the specific event is the target of the alarm, it is not limited to fire. It can also be a gas leak, a tsunami, an earthquake, and the intrusion of suspicious persons.

As shown in FIG. 5, the audio device 1 of this embodiment further has a photoelectric sensor (detection part 2) for detecting smoke inside it, but the detection part 2 can also be a constant temperature sensor for detecting heat Device. In addition, the detection unit 2 may be separated from the audio device 1. The control unit 10 of the audio device 1 can also receive fire-related information by communicating with other audio devices (fire alarms) equipped with a detection unit.

The audio device 1 is installed on one surface (ceiling surface or wall surface) of a structure C1 such as a room, a bedroom, a staircase, a corridor, etc. in a house. The residence may also be an independent residence or a collective residence (apartment). Furthermore, the audio device 1 may be installed in a non-residential structure C1 (ceiling surface, wall surface, etc.) instead of being installed in a residence. As non-residential examples, it includes office buildings, theaters, cinemas, auditoriums, game halls, complex facilities, restaurants, department stores, schools, hotels, hotels, hospitals, nursing homes, kindergartens, libraries, museums, art galleries, underground streets, stations, and Airport etc.

The first output unit 11 outputs an alarm sound to notify the occurrence of a fire when it is determined by the control unit 10 that a fire as a specific event has occurred. The second output unit 12 outputs light that illuminates the surrounding area R1 (refer to FIG. 6) based on the information related to the fire. In addition, the light of the second output part 12 may be called "illumination light", but the light of the second output part 12 is weaker than the illuminating light output by ordinary lighting equipment, and is used to illuminate the evacuation route. The degree of light. The "surrounding area R1" mentioned here is the area facing the ceiling when the audio device 1 is installed on the ceiling surface (for example, the floor), and when the audio device 1 is installed on the wall surface, it is with the wall surface Opposite area (e.g. wall).

The casing 4 houses the control unit 10, the first output unit 11 and the second output unit 12. The housing 4 has a base 4A (refer to 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 recessed in the direction approaching the base portion 4A on the front surface 40 thereof. The first area 91 of the inner surface 90 of the slit 9 has an acoustic hole H1 for guiding the alarm sound to the outside of the casing 4, and the second area 92 of the inner surface 90 has an acoustic hole H1 for guiding the illuminating light to the outside of the casing 4 The window hole H2.

According to this structure, not only the alarm sound is output, but also the illumination light is output. Therefore, the evacuation time can be shortened. In addition, the acoustic hole H1 and the window hole H2 are provided on the inner surface 90 of the slit 9, so these holes have an inconspicuous structure. Therefore, it is possible to prevent the beauty of the appearance from being damaged, and to shorten the evacuation time.

(2) Details (2.1) Overall composition Hereinafter, the overall structure of the acoustic device 1 of this embodiment will be described in detail. Here, as an example, the audio device 1 is a battery-type fire alarm. However, the audio device 1 may also be a fire alarm that is electrically connected to an external power source (such as a commercial power system), and converts AC power (such as an effective value of 100 V) supplied from the external power source into a DC current to drive it.

Hereinafter, as shown in FIG. 6, as an example, it is assumed that the audio device 1 is installed on the ceiling surface (one surface of the structure C1) of the bedroom in the residence of the occupant 100. In this way, the upper, lower, and left-right arrows illustrated in FIG. 1 are used to specify the up, down, and left-right directions of the acoustic device 1 for description. These arrows are only recorded for the purpose of explanation and are not accompanied by entities. Moreover, these directions are not intended to limit the use direction of the audio device 1.

As shown in FIG. 5, the audio 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 operating part 3 and the actuation lamp 15. Here, as an example, the audio device 1 is a stand-alone fire alarm, and it is assumed that it does not have a communication function for communicating with other fire alarms.

(2.2) Shell The housing 4 houses the control unit 10, the first output unit 11, the second output unit 12, the battery 13, the detection unit 2, and the circuit board B1 for mounting the control unit 10 and the circuit components constituting the various circuits (refer to the figure). 4) Wait. Although illustration is omitted, the various circuits mentioned here are, for example, the following acoustic circuit, first lighting circuit, second lighting circuit, and power supply circuit.

The case 4 is made of synthetic resin, for example, made of flame-retardant ABS (Acrylonitrile-Butadiene-Styrene) resin. The housing 4 is formed in a flat cylindrical shape as a whole. As shown in FIG. 3, the housing 4 includes a box body 4H with an open upper end, and a base 4A. The base 4A is assembled by covering the open upper end of the box body 4H. The box body 4H includes a front wall portion 4B (the lower wall portion in FIG. 1) and a side wall portion 4C.

The base 4A has a disc 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 4A has, for example, a plurality of through holes (fixing portions) penetrating in the thickness direction and for inserting mounting screws, and the base 4A can be screwed and fixed to the ceiling surface with the mounting screws. With the base 4A fixed to the ceiling surface, the base 4A is inserted into the upper end of the box body 4H, thereby assembling the base 4A and the box body 4H.

The front wall portion 4B has a circular plate shape, and is located on the front side of the base portion 4A (the lower side in FIG. 1). As shown in FIGS. 1 and 2A, the front wall portion 4B has slits 9 recessed in the direction (upward direction) approaching the base 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. As an example, 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 casing 4 are connected to each other when viewed from the front of the front wall portion 4B. On the front surface 40 of the front wall portion 4B, there is a region R10 surrounded by the slit 9 (refer to FIG. 2A). The center P1 of the region R10 coincides with the center of the outer circumference of the housing 4 when viewed from the front of the front wall portion 4B. Furthermore, the so-called "unanimity" mentioned here may not be strictly unanimous, and it also includes situations where people's perception can be called unanimity in the following.

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

Furthermore, the slit 9 has an acoustic hole H1 and a window hole H2 in the first area 91 and the second area 92 of the inner surface 90, respectively. The sound hole H1 is a hole used to guide the alarm sound of the first output unit 11 to the outside of the casing 4 and is opposite to the first output unit 11 in the casing 4. In addition, the window hole H2 is a hole for guiding the illuminating light of the second output portion 12 to the outside of the casing 4, and is opposed to the second output portion 12 in the casing 4. Furthermore, the sound hole H1 and window hole H2 in the slit 9 will be described in detail in the column of "(2.8) Sound hole and window hole" below.

As shown in FIG. 3, the side wall part 4C protrudes toward the base part 4A from the peripheral edge E1 of the front wall part 4B. Furthermore, the surface of the side wall portion 4C is not straight in the vertical direction, but is slightly inclined so that the closer to the base portion 4A (the further upward), the smaller the diameter of the box body 4H (see FIG. 3). In short, the diameter of the lower end side of the box body 4H is slightly larger than the diameter of the upper end side of the box body 4H.

The side wall portion 4C has an opening 41 that allows fire smoke to flow into the labyrinth (the detection space of the detection portion 2) provided in the housing 4. The opening 41 includes a plurality of through holes arranged along the circumferential direction of the housing 4. The housing 4 has a partition wall that partitions the internal space into two upper and lower parts. The labyrinth and detection portion 2 are located in the upper first space, and the control portion 10, the first output portion 11, the second output portion 12, and the circuit board B1 are located in the lower second space.

Furthermore, the casing 4 is attached to the front wall portion 4B, and supports the operation portion 3 so that the lower surface of the operation portion 3 is exposed to the outside of the casing 4. The operation unit 3 accepts operation input from the outside. The operation part 3 can be pushed upward by a pressing operation with a user's finger or the like. The operation part 3 is a disc-shaped member with light-transmitting properties. The operation part 3 is arranged opposite to the actuating lamp 15 contained in the housing 4. In addition, the operation unit 3 is configured to press a button switch (not shown) housed in the housing 4 by a pressing operation.

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

(2.3) The first output 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 to notify the occurrence of the fire.

The first output unit 11 is composed of a speaker that converts electrical signals into sound. The speaker has a diaphragm, and generates an alarm sound by mechanically vibrating the diaphragm according to an electric signal. The loudspeaker is formed in a front-view circular shape and has a circular plate shape. The first output unit 11 outputs an alarm sound (for example, the sound of "beep") under the control of the control unit 10. The first output unit 11 preferably changes the size of the alarm sound (sound pressure level) to output the alarm sound. The alarm sound may also include a sweeping sound from bass to treble, for example. The alarm sound may also include a sound message such as "Fire! Fire!". Here, it is assumed that the alarm sound includes a sweeping sound and a sound message immediately following the sweeping sound.

On the circuit board B1, for example, circuit components constituting an audio circuit are mounted. The audio circuit has a low-pass filter and amplifier. When the acoustic circuit receives a PWM (Pulse Width Modulation) signal corresponding to the alarm sound generated by the control unit 10 when a fire occurs, it uses a low-pass filter to convert the signal into a sinusoidal sound signal and It is amplified by an amplifier and output from the first output unit 11 in the form of a warning sound.

The first output unit 11 also tentatively outputs an alarm sound during operation inspection. The first output unit 11 outputs audio messages such as "normal." or "abnormal." based on the state of the audio device 1. The operation check can be performed by operating the operating part 3 or pulling a cord (not shown) derived from the housing 4. The first output unit 11 may also output a voice message that announces the content when the replacement time of the battery 13 approaches. The battery 13 is, for example, a lithium battery.

(2.4) Output 2 The second output unit 12 outputs illumination light. The second output unit 12, under the control of the control unit 10, outputs illuminating light for illuminating the surrounding area R1 based on the information related to the fire.

The second output unit 12 has one or a plurality of white LEDs (Light Emitting Diodes) 12A for illumination mounted on the circuit board B1 as a light source (refer to FIG. 4: here, two LEDs 12A). The second output unit 12 is extinguished in the normal time (during fire monitoring), and starts to be turned on when the control unit 10 determines that a fire has occurred (the output of the illumination light).

Each LED12A is configured as a package type LED in which at least one LED chip is mounted in the center of the mounting surface of a flat mounting substrate. For example, the LED chip is preferably a blue light emitting diode emitting blue light from the light emitting surface. In addition, the mounting surface of the substrate including the LED chip is covered with a sealing resin mixed with a fluorescent substance that converts the wavelength of the blue light emitted from the LED chip. The LED12A is configured to emit white illumination light from the light-emitting surface by applying a DC voltage between the anode electrode and the cathode electrode. The color of the illuminating light is not limited to white, and may be other light colors. However, it is more desirable that the light color of the actuating lamp 15 is not covered.

On the circuit board B1, circuit components constituting a first lighting circuit for lighting the LED12A of the second output unit 12 are mounted. The first lighting circuit uses the DC power discharged from the battery 13 to light the LED 12A under the control of the control unit 10. When the audio device 1 is electrically connected to the commercial power system, the first lighting circuit converts the AC power supplied from the power system into a DC current to light up the LED 12A.

The light (illumination light) emitted from the second output portion 12 is led out to the outside of the casing 4 via the light guide member 8 (refer to FIG. 4). The light guide member 8 is formed of, for example, a transparent acrylic resin or the like. 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 part 80 is inserted into the window hole H2 from the circuit board B1 side, and is exposed from the window hole H2 (refer to 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 and bed of the bedroom, etc.) is illuminated.

The second output unit 12 is also lit on a trial basis during operation inspection. The operation check of the second output unit 12 is the same as that of the first output unit 11, and can be performed by pressing the operating unit 3 or pulling the cord.

(2.5) Actuating light The actuating lamp 15 has a red LED 15A (refer to FIG. 5) mounted on the circuit board B1 as a light source. The operating lamp 15 is turned off at normal times (during fire monitoring), and starts to flicker (or light up) when the control unit 10 determines that a fire has occurred. When the warning by the siren stops, the actuating lamp 15 under the control of the control unit 10 stops flashing.

On the circuit board B1, circuit components constituting a second lighting circuit for blinking the LED 15A of the operating lamp 15 are mounted. The second lighting circuit uses the DC power discharged from the battery 13 under the control of the control unit 10 to blink the LED 15A. When the audio device 1 is electrically connected to a commercial power system, the second lighting circuit converts the AC power supplied from the power system into a DC current to make the LED 15A blink.

The light emitted from the actuated lamp 15 is led out to the outside of the housing 4 through the operation part 3 having light permeability. The occupant 100 can recognize that the audio device 1 is in operation (detecting a fire) by visually recognizing the operating part 3 flashing red. The actuation lamp 15 also flashes during the operation check. The operation check of the actuating lamp 15 can be performed by pressing the operation unit 3 or pulling the cord, similarly to the first output unit 11. In addition, the operating lamp 15 also flashes when the replacement time of the battery 13 is approaching or when a malfunction occurs. When the operation unit 3 is operated during the flashing, the first output unit 11 will output a voice message conveying the content of the approaching replacement time or the content of the failure.

(2.6) Detection Department The detection unit 2 detects a fire as a specific event. Here, as an example, the detection unit 2 is a photoelectric sensor (smoke detection unit) that detects smoke. As shown in FIG. 5, the detection unit 2 includes, for example, a light-emitting unit 21 such as an LED, and a light-receiving unit 22 such as a photodiode. The light-emitting portion 21 and the light-receiving portion 22 are arranged in the labyrinth of the housing 4 such that the light-receiving surface of the light-receiving portion 22 deviates from the optical axis of the irradiated light of the light-emitting portion 21. When a fire occurs, smoke will 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 casing 4, most of the irradiated light from the light emitting part 21 does not reach the light receiving surface of the light receiving part 22. On the other hand, when there is smoke in the tortuous path of the casing 4, the irradiated light of the light emitting part 21 is scattered by the smoke, and a part of the scattered light reaches the light receiving surface of the light receiving part 22. That is, the detecting unit 2 uses the light receiving unit 22 to receive the irradiated light from the light emitting unit 21 scattered by the smoke.

The detection part 2 is electrically connected to the control part 10. The detection unit 2 sends an electrical 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 amount of light of the detection signal received from the detection unit 2 into a smoke density (event level) to determine the fire. Furthermore, the detection unit 2 may also send 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 a fire (smoke) based on the amount of light received by the light receiving unit 22, and send a detection signal including information that the fire has occurred to the control unit 10.

(2.7) Control section The control unit 10 is composed of, for example, a microcomputer mainly composed of a CPU (Central Processing Unit) and a memory. In other words, the control unit 10 is realized by a computer with a CPU and a memory, and the computer functions as the control unit 10 by executing a program stored in the memory by the CPU. Here, the program is pre-recorded in the memory, but it can also be provided through telecommunication lines such as the Internet, or recorded on a non-transitory recording medium such as a memory card.

The control unit 10 controls the first output unit 11, the audio circuit, the second output unit 12, the actuating lamp 15, the first lighting circuit, the second lighting circuit, the detection unit 2, and the like. In addition, the control unit 10 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 related to a fire as a specific event and determine whether a fire has occurred. Specifically, the control unit 10 monitors the detection signal (information) received from the detection unit 2 and determines whether the event level contained in the detection signal exceeds a threshold. As mentioned above, as an example, the event level is the smoke density after conversion. However, the event level can also be the amount of light.

The control unit 10 stores a threshold in its own memory. For example, the control unit 10 may periodically determine whether the smoke concentration exceeds the threshold value at a specific time interval, and as long as the smoke concentration exceeds the threshold value once, it is determined that a fire has occurred. The specific time interval is, for example, a 5-second interval. Alternatively, the control unit 10 may count the number of times that the smoke concentration continuously exceeds the threshold value, and when the number of times reaches a predetermined number of times, it may be determined that a fire has occurred. Of course, the control unit 10 can also directly determine that a fire has occurred as long as it receives a detection signal containing information that a fire has occurred from the detection unit 2.

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

In addition, when the control unit 10 determines that a fire has occurred, it sends a control signal for lighting the second output unit 12 to the first lighting circuit, and a control signal for flashing the operating lamp 15 to the second lighting circuit. Light up the circuit. When the first lighting circuit receives a control signal from the control unit 10, it lights the second output unit 12 with a constant brightness. When the second lighting circuit receives a control signal from the control unit 10, it causes the operating lamp 15 to start blinking.

The control unit 10 also determines the smoke concentration during the alarm (when the alarm is sounded). If the smoke concentration becomes less than the reference value during the alarm, the control unit 10 stops the generation of the PWM signal to stop the output of the alarm sound by the first output unit 11, and sends the stop signal to the first lighting circuit and In the second lighting circuit, the light output from the second output unit 12 and the actuating lamp 15 also stops. That is, when the control unit 10 determines that the fire (smoke) is eliminated, it automatically stops the output of the alarm sound, the output of the illumination light, and the flickering of the operating lamp 15.

In addition, the control unit 10 stops the output of the alarm sound when the button switch in the housing 4 is turned on by pressing the operation unit 3 during the alarm. If the occupant 100 judges that the alarm of the audio device 1 is a false alarm, the alarm sound can be stopped by pressing the operation part 3. The warning stop of the siren can also be realized by pulling the rope.

On the other hand, when the control unit 10 turns on the button switch in the housing 4 by pressing the operation unit 3 during non-alarming, it performs a specific operation test for operation inspection. The operation test includes a sound output test of the first output unit 11, a light output test of the second output unit 12, and a flicker test of the actuating lamp 15, etc. The action test can also be achieved by pulling the rope.

Here, for example, when a fire breaks out in a house in the middle of the night, the occupant 100 who is sleeping in the bedroom of the house may get up from the bed in a state of near darkness after hearing the alarm sound, and It is difficult to instantly grasp the path and direction from the bed to the door connected to the corridor. In addition, the occupant 100 may, for example, want to walk to the wall switch in the dark by groping with their hands, and turn on the lighting of the bedroom, and the action until the wall switch is turned on may delay evacuation. In addition, if the occupant 100 is, for example, a hearing-impaired person, there is a possibility that the occurrence of a fire may not be noticed by the alarm sound (sound). In contrast, the audio device 1 not only outputs the alarm sound, but also outputs the illumination light of the second output unit 12, so the occupant 100 is likely to instantly grasp the path from the bed to the door connected to the corridor (evacuation path), saving The time to light up the bedroom lighting. Moreover, even if the occupant 100 is a hearing impaired, it is highly likely that the occurrence of a fire will be detected by the illumination light of the second output unit 12. In short, the audio device 1 not only outputs the alarm sound, but also outputs the illumination light, so the evacuation time can be shortened.

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

As described above, the acoustic hole H1 and the window hole H2 are respectively arranged in the first area 91 and the second area 92 of the inner surface 90 of the annular slit 9 having a specific groove width. As an example, the cross section of the slit 9 of the present embodiment cut along the diameter direction of the front wall portion 4B is a rectangular recess, and the first area 91 and the second area 92 are the bottom surface 900 of the inner surface 90 (see FIG. 2B) A part of the area. Therefore, when viewed from the front of the front wall portion 4B, the sound hole H1 and the window hole H2 are in a visible position.

However, at least any one of the first area 91 and the second area 92 may be a partial area of the first inner surface 901 (refer to FIG. 2B) on the center P1 side of the area R10 in the inner surface 90, or may be the peripheral edge E1 side Part of the second inner surface 902 (refer to FIG. 2B). In addition, at least one of the first region 91 and the second region 92 may also be a region spanning both the bottom surface 900 and the first inner side surface 901 (or the second inner side surface 902), or a region spanning the bottom surface 900 and the second 1 The entire area of the inner surface 901 and the second inner surface 902. In addition, the cross section of the slit 9 is not limited to being recessed in a rectangular shape, and may be recessed in a V shape, for example.

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

As shown in FIG. 2A, the sound hole H1 is arranged such that the sound hole H1, the center P1, and the operation portion 3 are arranged in a row when viewed from the front of the front wall portion 4B (refer to the imaginary line A1 in FIG. 2A). On the other hand, the window hole H2 is provided on a virtual line A2 perpendicular to the virtual line A1 and passing through the center P1 when viewed from the front of the front wall portion 4B. Furthermore, in the example shown in the figure, the window hole H2 is located closer to the rear side than the center P1, but may be located closer to the front side than the center P1. In addition, the relative positional relationship between the acoustic hole H1, the window hole H2, the center P1, and the operation part 3 in the illustrated example is also an example. For example, the position of the sound hole H1 and the position of the window hole H2 can also be interchanged. Moreover, the window hole H2 may also be provided on the right side of the operation part 3 on the imaginary line A1.

In this way, in this embodiment, not only the output of the alarm sound but also the output of the illuminating light is performed. In addition, the sound hole H1 and the window hole H2 are provided on the inner surface 90 of the slit 9, so these holes have an inconspicuous structure . That is, when the sound device 1 is installed in a structure C1 such as a ceiling of a house, it is not easy to give an impression that the sound hole H1 and the window hole H2 are emphasized with respect to the structure C1. Therefore, it is possible to prevent the aesthetics of the sound device 1 from being damaged, and to shorten the evacuation time.

In addition, since the window hole H2 that emits the illuminating light is located in the slit 9, it is possible to suppress the dazzling feeling (glare) brought to the occupant 100. Furthermore, in addition to being installed on the ceiling surface, the audio device 1 may also be installed on the wall surface, for example. In this case, the sound hole H1 and the window hole H2 are provided on the inner surface 90 of the slit 9, thereby preventing the possibility of foreign matter such as dust entering the housing 4 from the holes.

In addition, the slit 9 has a shape along the outer periphery of the casing 4, so that a slit 9 having a sense of integration with the casing 4 can be provided, and the acoustic hole H1 and the window hole H2 have a more inconspicuous structure. Furthermore, 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, so that the slit 9 can be provided with a more integrated feeling with the housing 4.

In addition, the operating portion 3 is arranged in the area R10 surrounded by the slit 9 when viewed from the front of the front wall portion 4B. Therefore, it is possible to provide the slit 9 with the housing 4 and the operating portion 3 and the sound hole H1 And the window hole H2 becomes a more inconspicuous structure.

In addition, the slit 9 is ring-shaped, so that the slit 9 that is more integrated with the housing 4 can be improved. In particular, the outer circumference of the casing 4 is circular, and the slit 9 is a ring-shaped concentric circle with the outer circumference of the casing 4, so that the slit 9 with a more integrated feeling can be provided.

Assuming that the slit 9 is not provided in the front wall portion 4B, for the front surface 40 of the front wall portion 4B, the positional relationship and size relationship between the holes for audio and the holes for light windows must be considered as inconspicuous as possible, which may limit design freedom degree. However, by providing the slit 9 as in the present embodiment, as long as it is the inner surface 90 of the slit 9, it is not easy to be restricted by the position of the first area 91 and the second area 92 and the restriction of the circumferential length. The design freedom of the sound hole H1 and window hole H2 can be improved.

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

(2.9) The structure of the outer side of the shell Hereinafter, the structure of the outer side of the housing 4 will be described in detail while referring to FIG. 3.

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

Because the front wall portion 4B has such a front surface 40, it can be provided that when viewing the entire casing 4, the casing 4 near the periphery E1 looks thinner in the upper and lower directions, and is a thin casing 4 as a whole. With such a thin casing 4, the acoustic device 1 is inconspicuous with respect to the structure C1.

In addition, the opening 41 of the side wall 4C of the present embodiment has a tapered surface T1 at its opening edge for guiding the inflow of fire smoke. The opening edge includes a first edge 411 on the side of the base 4A and a second edge 412 on the side of the front wall 4B. The tapered surface T1 is located at at least the second edge 412 of the first edge 411 and the second edge 412. In the illustrated example, as an example, the tapered surface T1 is located at both the first edge 411 and the second edge 412. The tapered surface T1 on the lower side is an inclined surface inclined in such a way that the closer to the base 4A, the closer to the detection space (labyrinth) in the housing 4. The tapered surface T1 on the upper side is an inclined surface inclined in such a way that the farther away from the base 4A, the closer to the detection space (labyrinth) of the housing 4. Furthermore, the tapered surface T1 on the lower side has a larger area than the tapered surface T1 on the upper side, and the length in the vertical direction is also larger.

Because the side wall 4C has such a tapered surface T1, fire smoke can more easily flow into the detection space in the housing 4, which can improve the fire detection performance. In addition, with the tapered surface T1 at both the first edge 411 and the second edge 412, the side wall portion 4C looks like a narrowed shape, and the aesthetics of the appearance of the audio device 1 is also improved.

In particular, the portion D1 of the side wall 4C from the lower end of the tapered surface T1 on the lower side to the peripheral edge E1 looks thinner due to the presence of the tapered surface T1. Therefore, the fire smoke detection performance is improved, and the appearance from the peripheral edge E1 of the front wall portion 4B to the second edge 412 becomes thin, and the aesthetics of the appearance becomes better.

(3) Variations Here are a few examples of changes. Hereinafter, the above-mentioned embodiment is referred to as a "basic example". Each of the modified examples described below can be appropriately combined with the above-mentioned basic examples and/or other modified examples for application.

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 have a polygonal ring shape in addition to the circular ring shape. For example, if the outer peripheral shape of the housing 4 when viewed from the front is regular hexagonal or regular octagonal, the appearance of the slit 9 can also be a regular hexagonal ring or regular octagonal shape matching the outer peripheral shape of the housing 4 The edge of the ring.

The slit 9 in the basic example has a shape that matches the outer circumference of the housing 4. However, it is not necessary to match the shape of the slit 9 with the outer circumference of the housing 4. For example, compared to the housing 4 whose outer peripheral shape is circular, the slit 9 may also be a regular octagonal ring.

In the basic example, the number of each of the sound hole H1 and the window hole H2 is one, but it may be two or more. For example, two acoustic holes H1 may be arranged along the circumferential direction of the slit 9. For example, two window holes H2 may be provided at the left and right ends of the slit 9 with a center P1 in between. In addition, the number of sound holes H1 and the number of window holes H2 may be different from each other.

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

Also, like the acoustic device 1A of the modified example shown in FIG. 7, the slit 9 includes 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 circumference of the housing 4 when viewed from the front of the front wall portion 4B. In the modified example of FIG. 7, the acoustic hole H1 and the window hole H2 are also inconspicuous structures. Furthermore, here, both the sound hole H1 and the window hole H2 are provided in one of the C-shaped small slits 9X, and one of the holes may be provided in the other small slit 9X.

Alternatively, one or more dummy slits may be provided separately from the slit 9. The dummy slit is, for example, an annular ring that is concentric with the slit 9 and may be smaller in diameter (or larger in diameter) than the slit 9. In this case, the dummy slit is arranged inside the slit 9. In this way, by providing the dummy slit, it is not easy to give the impression that the (mainly) slit 9 is provided with the sound hole H1 and the window hole H2.

The sound device 1 of the basic example is a stand-alone fire alarm. That is, the audio device 1 of the basic example does not have a communication function for communicating with other fire alarms. However, the audio device 1 may also be a linked type fire alarm that has a communication function for communicating with other fire alarms. Communication can be done wirelessly or wired.

In addition, the audio device 1 may be configured to be able to communicate with equipment other than the fire alarm. The so-called equipment other than the fire alarm is, for example, a mobile terminal (such as a smart phone) carried by the occupant 100, and a security monitoring device installed in the house.

(4) Advantages As described above, the acoustic device (1, 1A) of 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 casing (4). The control unit (10) receives information related to a specific event and determines whether a specific event has occurred. The first output unit (11) outputs a sound to notify the occurrence of the specific event when the control unit (10) determines that a specific event has occurred. The second output unit (12) outputs illuminating light for illuminating the surrounding area (R1) based on the above information. The casing (4) houses the control unit (10), the first output unit (11), and the second output unit (12). The casing (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 part (4B) has a slit (9) recessed in the direction approaching the base part (4A) on its front surface (40). The slit (9) has an acoustic hole (H1) in the first area (91) of the inner surface (90) to guide the above-mentioned sound to the outside of the casing (4), and is in the second area of the inner surface (90) (92) It has a window (H2) that leads the above-mentioned illuminating light to the outside of the housing (4). According to the first aspect, not only the output of sound (alarm sound) but also the output of illumination light is performed, and the acoustic hole (H1) and window hole (H2) are provided on the inner surface (90) of the slit (9), so The holes become inconspicuous structures. Therefore, it is possible to prevent the beauty of the appearance from being damaged, and to shorten the evacuation time.

The acoustic device (1, 1A) of the second aspect is in the first aspect, and it is preferable that the slit (9) is formed along the side of the housing (4) when viewed from the front of the front wall (4B) The shape of the periphery. According to the second aspect, a slit (9) with a sense of unity with the housing (4) can be provided, and the acoustic hole (H1) and window hole (H2) have a more inconspicuous structure.

The acoustic device (1) of the third aspect is in the second aspect, and the slit (9) is preferably a slit (9) in the circumferential direction of the outer periphery when viewed from the front of the front wall part (4B) ) A ring shape formed by connecting one end to the other end. According to the third aspect, a slit (9) that is more integrated with the housing (4) can be provided. In addition, the design freedom of the acoustic holes (H1) and window holes (H2) in the slit (9) can be improved.

The acoustic device (1A) of the fourth aspect is in the second aspect, and preferably the slit (9) includes 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) have a more inconspicuous structure.

The sound device (1, 1A) of the fifth aspect is in any of the second to fourth aspects, preferably the center (P1) of the area (R10) surrounded by the slit (9) The front wall part (4B) coincides with the center of the outer periphery when viewed from the front. According to the fifth aspect, a slit (9) that is more integrated with the housing (4) can be provided.

The audio device (1, 1A) of the sixth aspect is in any one of the second to fifth aspects, and preferably further includes an operation part (3) that accepts operation input from the outside. The operation part (3) is preferably arranged on the front surface (40) of the front wall part (4B) when viewed from the front of the front wall part (4B), in the area (R10) surrounded by the slit (9). According to the sixth aspect, a slit (9) having a sense of integration with the housing (4) and the operating portion (3) can be provided, and the acoustic hole (H1) and window hole (H2) have a more inconspicuous structure.

The acoustic device (1, 1A) of the seventh aspect is in any one of the first to sixth aspects, and preferably the front surface (40) of the front wall portion (4B) is more from the center (P2) ) Toward the periphery (E1), the closer to the base (4A), the way to tilt. According to the seventh aspect, a thin casing (4) as a whole can be provided, and the acoustic device (1, 1A) is inconspicuous with respect to the structure (C1).

The acoustic device (1, 1A) of the eighth aspect is in any one of the first to seventh aspects, and preferably the so-called specific event refers to a fire. The audio device (1, 1A) is preferably further provided with a detection part (2), the detection part (2) is housed in the casing (4) and detects fire. The control unit (10) preferably receives the detection result from the detection unit (2) as the above-mentioned information and determines whether a fire has occurred. According to the eighth aspect, it is possible to provide an audio device (1, 1A) with a detection unit (2) that can prevent the aesthetics of appearance from being damaged and shorten the evacuation time.

The audio device (1, 1A) of the ninth aspect is in the eighth aspect, and it is preferable that the detecting part (2) is a smoke detecting part. The housing (4) preferably further has a side wall portion (4C) that protrudes from the peripheral edge (E1) of the front wall portion (4B) toward the base portion (4A). The side wall part (4C) preferably has an opening part (41) that allows fire smoke to flow into the detection space of the smoke detection part (detection part 2) in the housing (4). The opening (41) preferably has a tapered surface (T1) at its opening edge to guide the inflow of fire smoke. According to the ninth aspect, the tapered surface (T1) can improve the detection performance of fire smoke.

The acoustic device (1, 1A) of the tenth aspect is in the ninth aspect, and it is preferable that the opening edge includes a first edge (411) on the side of the base (4A) and a first edge (411) on the side of the front wall (4B). 2 edges (412). The tapered surface (T1) is preferably located at at least the second edge (412) of the first edge (411) and the second edge (412). According to the tenth aspect, the tapered surface (T1) can improve the detection performance of fire smoke, and it has a thin appearance from the periphery (E1) of the front wall (4B) to the second edge (412) , The aesthetics of appearance becomes better.

Regarding the configurations of the second to tenth aspects, they are not necessary for the audio device (1, 1A) and can be omitted as appropriate.

1‧‧‧Sound device 1A‧‧‧Sound device 2‧‧‧Detection Department 3‧‧‧Operation Department 4‧‧‧Shell 4A‧‧‧Base 4B‧‧‧Front wall 4C‧‧‧Sidewall 4H‧‧‧Box 8‧‧‧Light guide member 9‧‧‧Slit 9X‧‧‧Small slit 10‧‧‧Control Department 11‧‧‧The first output 12‧‧‧Second output 12A‧‧‧LED 13‧‧‧Battery 15‧‧‧Moving light 15A‧‧‧LED 21‧‧‧Lighting part 22‧‧‧Light receiving part 40‧‧‧Front surface 41‧‧‧Opening 80‧‧‧Exposed part 90‧‧‧Inner surface 91‧‧‧Region 1 92‧‧‧Region 2 100‧‧‧occupants 411‧‧‧First Fate 412‧‧‧Second Fate 900‧‧‧Bottom 901‧‧‧The first inner side 902‧‧‧Second inner side A1‧‧‧Imaginary line A2‧‧‧Imaginary line C1‧‧‧Structure D1‧‧‧The part of the side wall from the lower end of the tapered surface to the periphery E1‧‧‧The periphery of the front wall H1‧‧‧Sound hole H2‧‧‧Window hole P1‧‧‧Center P2‧‧‧Center Area around R1‧‧‧ R10‧‧‧Region T1‧‧‧Conical surface

Fig. 1 is an external view of an audio device according to an embodiment. Fig. 2A is a front view of an acoustic device according to an embodiment, and Fig. 2B is a front view of main parts of an acoustic device according to an embodiment. Fig. 3 is a side view of an audio device of an embodiment. Fig. 4 is a perspective view of a second output part and a light guide member in the acoustic device of an embodiment. Fig. 5 is a block diagram of the acoustic device of an embodiment. Fig. 6 is a diagram showing the state of a bedroom provided with an audio device of an embodiment. Fig. 7 is a front view of a modified example of the acoustic device of an embodiment.

3‧‧‧Operation Department

4‧‧‧Shell

4B‧‧‧Front wall

8‧‧‧Light guide member

9‧‧‧Slit

11‧‧‧The first output

40‧‧‧Front surface

80‧‧‧Exposed part

90‧‧‧Inner surface

91‧‧‧Region 1

92‧‧‧Region 2

900‧‧‧Bottom

901‧‧‧The first inner side

902‧‧‧Second inner side

A1‧‧‧Imaginary line

A2‧‧‧Imaginary line

H1‧‧‧Sound hole

H2‧‧‧Window hole

P1‧‧‧Center

P2‧‧‧Center

R10‧‧‧Region

Claims (8)

An audio device is installed in a structure, and includes: a control unit that receives information related to a specific event and determines whether the specific event has occurred; a first output unit that is determined by the control unit to have occurred In the case of a specific event, a sound is output to notify the occurrence of the above-mentioned specific event; a second output unit that outputs illuminating light to illuminate the surrounding area based on the above-mentioned information; and a housing that houses the control unit, the first output unit, and the The second output portion; and the housing has 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 toward the direction approaching the base portion on its front surface; The slit is located in the first area of the inner surface and has an acoustic hole for leading out the sound to the outside of the housing, and in the second area of the inner surface, there is a way to lead out the illumination light to the outside of the housing Window; the so-called specific event refers to a fire; the audio device further has a detection unit housed in the housing and detects the fire; the control unit receives the detection result from the detection unit as The above information and determine whether the above fire has occurred; the above detection unit is a smoke detection unit; The housing further has a side wall that protrudes from the periphery of the front wall to the base; the side wall has an opening that allows fire smoke to flow into the detection of the smoke detector in the housing Space; The opening has a tapered surface at its opening edge to guide the inflow of the fire smoke. The acoustic device of claim 1, wherein the slit has a shape along the outer periphery of the housing when viewed from the front of the front wall portion. The acoustic device of claim 2, wherein the slit has a ring shape formed by connecting one end and the other end of the slit in the circumferential direction of the outer periphery when viewed from the front of the front wall portion. An audio device according to claim 2, wherein the slit includes a plurality of small slits, and the plurality of small slits are arranged along the outer periphery when viewed from the front of the front wall portion. An audio device according to any one of claims 2 to 4, wherein the center of the area surrounded by the slit is consistent with the center of the outer periphery when viewed from the front of the front wall. An audio device according to any one of Claims 2 to 4, which further includes an operation unit that accepts operation inputs from the outside, and the operation unit is located on the front surface of the front wall when viewed from the front of the front wall. It is arranged in the area surrounded by the slit. An audio device according to any one of claims 1 to 4, wherein the front surface of the front wall portion is inclined so as to approach the base portion from the center toward the periphery. The audio device of claim 1, wherein the opening edge includes a first edge on the base side and a second edge on the front wall side, and the tapered surface is located at least of the first edge and the second edge. The second edge.

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