EP3816954A1 - Dispositif anti-sinistre - Google Patents

Dispositif anti-sinistre Download PDF

Info

Publication number
EP3816954A1
EP3816954A1 EP19827345.0A EP19827345A EP3816954A1 EP 3816954 A1 EP3816954 A1 EP 3816954A1 EP 19827345 A EP19827345 A EP 19827345A EP 3816954 A1 EP3816954 A1 EP 3816954A1
Authority
EP
European Patent Office
Prior art keywords
housing
front wall
prevention device
disaster prevention
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19827345.0A
Other languages
German (de)
English (en)
Other versions
EP3816954B1 (fr
EP3816954A4 (fr
Inventor
Yoshitake Shimada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP3816954A1 publication Critical patent/EP3816954A1/fr
Publication of EP3816954A4 publication Critical patent/EP3816954A4/fr
Application granted granted Critical
Publication of EP3816954B1 publication Critical patent/EP3816954B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Definitions

  • the present disclosure generally relates to disaster prevention devices.
  • the present disclosure specifically relates to a disaster prevention device including a housing in which a circuit block is accommodated.
  • Patent Literature 1 discloses a fire detector (a disaster prevention device).
  • the fire detector includes: an attachment base configured to be attached to a ceiling material, a wall material, or the like with two attachment screws; a housing detachably attachable to the attachment base; and a smoke detection module (a circuit block) to be disposed in the housing.
  • the fire detector of Patent Literature 1 is attached to a ceiling material, a wall material, or the like.
  • the fire detector is preferably inconspicuous when attached to the ceiling material, the wall material, or the like.
  • Patent Literature 1 JP 2016-128989 A
  • the disaster prevention device of one aspect of the present disclosure includes: a circuit block; and a housing having a front wall and a rear wall.
  • the housing accommodates the circuit block between the front wall and the rear wall.
  • At least one of the front wall or the rear wall has a recess in a surface of the at least one of the front wall or the rear wall such that the at least one of the front wall or the rear wall has a partially reduced thickness, the surface facing an inner side of the housing.
  • the circuit block has a part located in the recess.
  • FIGS. 1 and 2 shows an alarm 10 of an embodiment.
  • the alarm 10 is one of disaster prevention devices.
  • the alarm 10 according to the present embodiment is a disaster prevention device that takes an alarm action when detecting smoke generated by a fire or the like.
  • a disaster prevention device detects this smoke and takes the alarm action by, for example, outputting a warning sound or cooperating with another apparatus by a communication function.
  • the "disaster prevention device” is an apparatus installed in a facility for the purpose of, for example, preventing disasters such as a fire, preventing the spread of damage caused by disasters, or restoring from disasters.
  • the disaster prevention device when the disaster prevention device has a warning function of taking an alarm action, the disaster prevention device is also referred to as an alarm.
  • the disaster prevention device when the disaster prevention device has a detection function of detecting a target substance, the disaster prevention device is also referred to as a detector.
  • the disaster prevention device may have both the warning function and the detection function, and in this case, the disaster prevention device may be referred to as a detector or an alarm.
  • Examples of a facility in which such a disaster prevention device is installed include dwelling facilities such as multiple residential dwelling complexes and detached dwelling houses, and non-dwelling facilities such as hotels, office buildings, schools, welfare facilities, commercial facilities, theme parks, hospitals, and factories.
  • the alarm 10 is installed by being attached to, for example, a ceiling or a wall in a room, a corridor, a staircase, or the like in a facility.
  • the alarm (the disaster prevention device) 10 includes: a circuit block 20; and a housing 50 which has a front wall 61 and a rear wall 71 and in which the circuit block 20 is accommodated between the front wall 61 and the rear wall 71.
  • the front wall 61 has a recess 63 in a surface of the front wall 61 such that the front wall 61 has a partially reduced thickness, the surface facing an inner side of the housing 50.
  • Part (an electronic component 22a) of the circuit block 20 is in the recess 63.
  • the rear wall 71 has a recess 73 in a surface of the rear wall 71 such that the rear wall 71 has a partially reduced thickness, the surface facing the inner side of the housing 50.
  • Part (a sensor 40) of the circuit block 20 is in the recess 73.
  • providing the recess 63 enables a space available for accommodation of the circuit block 20 in the housing 50 to be increased.
  • the part (the electronic component 22a) of the circuit block 20 is in the recess 63 as illustrated in FIGS. 3 and 8 .
  • the size of the housing 50 in particular, the thickness of the housing 50
  • providing the recess 73 enables the space available for accommodation of the circuit block 20 in the housing 50 to be increased.
  • the part (the sensor 40) of the circuit block 20 is in the recess 73 as illustrated in FIGS. 3 and 8 .
  • the size of the housing 50 in particular, the thickness of the housing 50
  • the alarm 10 is downsized.
  • FIG. 3 is a sectional view merely schematically illustrating the alarm 10, and only to make the description easier to understand, the dimensions of components of the alarm 10 are illustrated differently from those in other drawings such as FIG. 1 .
  • the alarm 10 includes the circuit block 20 and the housing 50.
  • the alarm 10 further includes an operation button 90 and a battery 100. Note that it is not essential that the battery 100 is included in the components of the alarm 10. That is, the alarm 10 does not necessarily have to include the battery 100.
  • the circuit block 20 includes a sound outputter 30 and the sensor 40.
  • the sound outputter 30 is a device configured to generate a sound. More specifically, the sound outputter 30 is an electro-acoustic transducer configured to receive an electric signal and output a sound (a sonic wave). Examples of the electro-acoustic transducer include loudspeakers and buzzers.
  • the sound outputter 30 includes a diaphragm 31.
  • the sound outputter 30 has a disk shape as a whole. Moreover, the diaphragm 31 has a disk shape.
  • the sensor 40 is a device configured to detect the target substance.
  • the target substance is smoke.
  • the target substance is not limited to the smoke but may be carbon monoxide, carbon dioxide, or other gases. That is, the target substance may be a substance which is desired to be detected for disaster prevention. Such a target substance can be accordingly selected also depending on the kind of the disaster prevention device.
  • the sensor 40 has a detection space S11 and is configured to detect the target substance in the detection space S11. More specifically, the sensor 40 includes a case 41, a light-emitting element 42, and a light-receiving element 43 as illustrated in FIG. 10 .
  • the case 41 has a hollow disk shape.
  • the case 41 is made of a synthetic resin.
  • the case 41 is a molded product made of, for example, a synthetic resin.
  • the case 41 has an internal space which is the detection space S11.
  • the case 41 has a plurality of paths 411 connecting a space lateral to the case 41 to the detection space S11.
  • the plurality of paths 411 each have a bent shape.
  • the target substance is taken from an outer side of the case 41 into the detection space S11 while light is suppressed from entering the detection space S11 from the outer side of the case 41.
  • the light-emitting element 42 and the light-receiving element 43 are accommodated in the case 41.
  • the sensor 40 detects smoke based on a change in the quantity of light reflected by the smoke in the detection space S11 or light transmitted through the detection space S11.
  • light-emitting element 42 outputs light toward the detection space S11.
  • the light-receiving element 43 is disposed at a location where direct light from the light-emitting element 42 is not incident on the light-receiving element 43 and scattered light by smoke in the detection space S11 is incident on the light-receiving element 43. Thus, in a state where no smoke is present in the detection space S11, the light-receiving element 43 does not receive the light output from the light-emitting element 42.
  • the light-receiving element 43 receives light (scattered light) which is the light output from the light-emitting element 42 and then scattered by the smoke.
  • the sensor 40 is configured to detect smoke present in the detection space S11 based on a light receiving state of the light-receiving element 43.
  • the light-emitting element 42 is, for example, a Light Emitting Diode (LED).
  • the light-receiving element 43 is, for example, a Photodiode (PD).
  • the circuit block 20 further includes a printed wiring board 21 and one or more electronic components 22 including a switch.
  • the electronic component 22 is mounted on the printed wiring board 21.
  • the sensor 40 is also mounted on the printed wiring board 21.
  • the sound outputter 30 and the battery 100 are electrically connected to the printed wiring board 21 via, for example, electric wires.
  • the printed wiring board 21 and the one or more electronic components 22 form a control circuit.
  • the control circuit controls the sound outputter 30 based on an output from the sensor 40. More specifically, when the sensor 40 detects smoke, the control circuit gives an electric signal to the sound outputter 30 to generate a sound.
  • the housing 50 accommodates the circuit block 20 (including the sound outputter 30 and the sensor 40).
  • the housing 50 also accommodates the operation button 90 and the battery 100.
  • the housing 50 has a disk shape which is a circular shape in plan view.
  • the housing 50 is fixed to a mounting surface (e.g., a ceiling surface).
  • the housing 50 is not directly fixed to the mounting surface but is indirectly fixed to the mounting surface by being fixed to an attachment base fixed to the mounting surface.
  • the housing 50 may directly be fixed to the mounting surface.
  • the housing 50 includes a first cover 60, a second cover 70, and a partition 80.
  • the first cover 60 is a front side portion
  • the second cover 70 is a back side portion. That is, in the alarm 10, it is assumed that the second cover 70 is used by being directly or indirectly fixed to the mounting surface.
  • the first cover 60, the second cover 70, and the partition 80 are made of a synthetic resin.
  • the first cover 60, the second cover 70, and the partition 80 are, for example, molded products made of a synthetic resin.
  • the first cover 60 includes the front wall (a first wall) 61 and a peripheral wall (a first peripheral wall) 62.
  • the front wall 61 has a plate-like shape.
  • the front wall 61 has a circular plate shape.
  • the peripheral wall 62 protrudes from a peripheral edge of the front wall 61 toward the second cover 70.
  • the peripheral wall 62 is cylindrical.
  • the front surface 61 has the recess (a first recess) 63 in the surface (a rear surface) (an upper surface in FIG. 3 ) of the front wall 61 such that the front wall 61 has a partially reduced thickness, the surface facing the inner side of the housing 50.
  • the front wall 61 has a prescribed part (a first prescribed part) 61a forming the recess 63 and a peripheral part (a first peripheral part) 61b surrounding the prescribed part 61a.
  • the prescribed part 61a is a part having a circular shape
  • the peripheral part 61b is a part having an annular shape.
  • the prescribed part 61a is a central part of the front wall 61.
  • the recess 63 is located at the center in the rear surface of the front wall 61.
  • the prescribed part 61a has a thickness that gradually changes. More specifically, the thickness of the prescribed part 61a gradually decreases from an edge to the center of the prescribed part 61a.
  • the surface (the rear surface), which faces the inner side of the housing 50, of the front wall 61 has, at least at the prescribed part 61a, a greater curvature than a surface (a front surface), which faces an outer side of the housing 50, of the front wall 61.
  • the prescribed part 61a and the peripheral part 61b have the same curvature on a front surface side of the front wall 61, but the prescribed part 61a has a greater curvature than the peripheral part 61b on a back surface side of the front wall 61.
  • the recess 63 is formed.
  • a long dashed double-short dashed line L60 shows a contour of the rear surface of the prescribed part 61a when the prescribed part 61a has, also at the back surface side, the same curvature as the peripheral part 61b (i.e., when the thickness of the front wall 61 is not partially reduced).
  • the long dashed double-short dashed line L60 shows a state where the thickness of the prescribed part 61a is not reduced to t11 but remains t12 equal to the thickness of the peripheral part 61b.
  • the part (the electronic component 22a) of the circuit block 20 is in the recess 63 as illustrated in FIGS. 3 and 8 .
  • the size of the housing 50 in particular, the thickness of the housing 50
  • the alarm 10 is downsized.
  • the front wall 61 has a shielding part 61c covering the sound outputter 30.
  • the shielding part 61c is part of the front wall 61 and faces the sound outputter 30.
  • the shielding part 61c extends to the prescribed part 61a and the peripheral part 61b.
  • the front wall 61 has no opening in the shielding part 61c. That is, the shielding part 61c has an airtight structure.
  • the shielding part 61c has a shape which difficultly functions as a cone or a diaphragm to the sound from the sound outputter 30. That is, the shielding part 61c does not have a structure that amplifies a vibration.
  • the shielding part 61c may have a structure that reduces the sound pressure of a sound (see arrow P12 in FIG. 3 ) that propagates from the sound outputter 30 through the shielding part 61c and then reaches the outside of the housing 50 to be lower than the sound pressure of a sound that propagates from the sound outputter 30 through air passages P11 (see FIG. 3 ) and then reaches the outside of the housing 50.
  • air passages P11 will be described later in detail.
  • the first cover 60 includes a tubular part 64.
  • the tubular part 64 protrudes from the shielding part 61c toward the sound outputter 30.
  • the tubular part 64 is in contact with the entire circumference of the sound outputter 30 protruding from the shielding part 61c (see FIGS. 3 and 9 ).
  • the tubular part 64 is cylindrical.
  • the sound outputter 30 is disposed with the diaphragm 31 facing the front wall 61, and the tubular part 64 abuts the sound outputter 30 to surround the diaphragm 31.
  • the tubular part 64 has an airtight structure.
  • the tubular part 64 and the shielding part 61c form a hermetically closed box. In other words, a hermetically sealed space S12 is formed in front of the sound outputter 30.
  • the front wall 61 of the first cover 60 has an opening 65.
  • the opening 65 is formed to expose the operation button 90.
  • the opening 65 has a circular shape.
  • the operation button 90 is a member for operating the switch of the circuit block 20.
  • the operation button 90 is movable along the thickness of the front wall 61 to the first cover 60.
  • the operation button 90 is made of a synthetic resin.
  • the operation button 90 is a molded product made of a synthetic resin.
  • the second cover 70 includes the rear wall (a second wall) 71 and a peripheral wall (a second peripheral wall) 72.
  • the rear wall 71 has a plate shape.
  • the rear wall 71 has a circular plate shape.
  • the peripheral wall 72 protrudes, from a peripheral edge of the rear wall 71, both toward the first cover 60 and away from the first cover 60.
  • the peripheral wall 72 is cylindrical.
  • the rear wall 71 has the recess (a second recess) 73 in the surface (a front surface) (a lower surface in FIG. 3 ) of the rear wall 71 such that the rear wall 71 has a partially reduced thickness, the surface facing the inner side of the housing 50.
  • the rear wall 71 has a prescribed part (a second prescribed part) 71a forming the recess 73 and a peripheral part (a second peripheral part) 71b surrounding the prescribed part 71a.
  • the prescribed part 71a is a part having a circular shape
  • the peripheral part 71b is a part having an annular shape.
  • the prescribed part 71a is located to be shifted from a central part of the rear wall 71.
  • the thickness of the prescribed part 71a does not change and is uniform unlike the thickness of the prescribed part 61a.
  • the prescribed part 71a is thinner than the peripheral part 71b but protrudes to the outside of the housing 50 more than the peripheral part 71b.
  • the prescribed part 71a is thinner than the peripheral part 71b, thereby forming the recess 73.
  • a long dashed double-short dashed line L70 shows a contour of the front surface of the prescribed part 71a when the prescribed part 71a has the same thickness as the peripheral part 71b (i.e., when the thickness of the rear wall 71 is not partially reduced).
  • the long dashed double-short dashed line L70 shows a state where the thickness of the prescribed part 71a is not t21 but remains t22 which is equal to the thickness of the peripheral part 71b.
  • Providing the recess 73 increases the space available for accommodation of the circuit block 20 in the housing 50.
  • the part (the sensor 40) of the circuit block 20 is in the recess 73 as illustrated in FIGS. 3 and 8 .
  • the size of the housing 50 in particular, the thickness of the housing 50
  • the alarm 10 is downsized.
  • the second cover 70 has a wall part (a second wall part) 74.
  • the wall part 74 is formed on the surface, which faces the inner side of the housing 50, of the rear wall 71.
  • the wall part 74 forms part of a specific guide wall 87a which will be described later.
  • the rear wall 71 of the second cover 70 has an opening 75.
  • the opening 75 is formed for removal of the battery 100.
  • the opening 75 has a rectangular shape.
  • the second cover 70 includes a plurality of attachment pawls 76 provided on the rear wall 71.
  • the plurality of attachment pawls 76 protrude from the surface, which faces the outer side of the housing 50, of the rear wall 71.
  • the plurality of attachment pawls 76 are used to attach the alarm 10 to the above-described attachment base.
  • the partition 80 is disposed between the first cover 60 and the second cover 70.
  • the partition 80 partitions the space between the first cover 60 and the second cover 70 into a first space S51 between the first cover 60 and the partition 80 and a second space S52 between the second cover 70 and the partition 80.
  • the partition 80 includes a partition plate 81.
  • the partition plate 81 has a circular plate shape.
  • the partition plate 81 is sized to be on an inner side of the peripheral wall 62 of the first cover 60.
  • the partition plate 81 entirely covers the opening of the peripheral wall 62 as illustrated in FIGS. 8 to 10 .
  • the partition plate 81 has a surface facing the second cover 70 and located on a substantially the same plane as a surface which is a tip end of the peripheral wall 62.
  • the partition 80 has an opening 82, a holder 83, a battery accommodation part 84, a plurality of through holes 85, and a plurality of supporting parts 86.
  • the opening 82, the holder 83, the battery accommodation part 84, the plurality of through holes 85, and the plurality of supporting parts 86 are provided to the partition plate 81.
  • the opening 82 is a pore through which the sensor 40 protrudes toward the second space S52.
  • the opening 82 has a size that allows the case 41 of the sensor 40 to pass therethrough.
  • the opening 82 has a circular shape.
  • the printed wiring board 21 and the sound outputter 30 are accommodated in the first space S51, and the sensor 40 protrudes through the opening 82 toward the second space S52.
  • the sensor 40 is accommodated in the second space S52.
  • the sound outputter 30 and the sensor 40 are accommodated respective spaces (the first space S51 and the second space S52) separated from each other by the partition 80. This reduces the possibility that the sensor 40 is influenced by the sound generated by the sound outputter 30.
  • the holder 83 is a part for accommodation of the sound outputter 30.
  • the holder 83 has a bottom 831 which is formed at the partition plate 81 and which has a shape recessed toward the second cover 70.
  • the bottom 831 is a counter part which is part of the partition 80 and which faces the sound outputter 30.
  • the bottom 831 is elastic. That is, the thickness and the shape of the bottom 831 are determined such that the bottom 831 is elastic.
  • the holder 83 has a support projection 832 and a plurality of positioning projections 833.
  • the support projection 832 abuts the central part of the sound outputter 30.
  • the support projection 832 protrudes from the bottom 831 toward the first cover 60.
  • the support projection 832 is cylindrical.
  • Each of the plurality of positioning projections 833 abuts a side surface and a rear surface of the sound outputter 30 at the edge of the sound outputter 30.
  • the plurality of projections 833 are disposed to surround the sound outputter 30.
  • the plurality of projections 833 abut the side surface and the rear surface of the sound outputter 30 to guide the sound outputter 30 to a specified location with respect to the partition plate 81.
  • a space for propagation of the sound from the sound outputter 30 is formed between the sound outputter 30 and the bottom 831 of the holder 83.
  • the bottom 831 is elastic. Therefore, the sound outputter 30 can be pressed by the bottom 831 against the front wall 61 (the tubular part 64) of the first cover 60.
  • the sound outputter 30 can be stably disposed in the first space S51.
  • the battery accommodation part 84 is a part for accommodation of the battery 100.
  • the battery accommodation part 84 has a recess 841 which is formed at the partition plate 81 and which is a part recessed toward the first cover 60.
  • the recess 841 accommodates part of the battery 100.
  • the battery accommodation part 84 further has a peripheral wall 842 which surrounds the battery 100 part of which is accommodated in the recess 841.
  • the peripheral wall 842 separates the interior of the battery accommodation part 84 from the second space S52. Thus, the battery 100 can be protected from smoke flowing into the second space S52.
  • the plurality of through holes 85 are pores penetrating the partition plate 81.
  • the plurality of through holes 85 connect the first space S51 to the second space S52.
  • the plurality of through holes 85 are pathways of a sound from the first space S51 to the second space S52.
  • the plurality of through holes 85 are located at an edge portion of the partition plate 81.
  • the plurality of through holes 85 each have an arc-like shape.
  • the plurality of through holes 85 are arranged to surround the opening 82.
  • the plurality of through holes 85 include specific through holes 85a located on an opposite side of the opening 82 from the holder 83.
  • the plurality of supporting parts 86 support the rear wall 71 of the second cover 70 with respect to the partition plate 81.
  • the plurality of supporting parts 86 each have a prism shape.
  • the plurality of supporting parts 86 determines the distance between the partition plate 81 and the rear wall 71.
  • the distance between the partition plate 81 and the rear wall 71 and the dimensions of the peripheral wall 62 and the peripheral wall 72 are determined such that the peripheral wall 62 and the peripheral wall 72 do not come into contact with each other and an opening 51 is formed between the peripheral wall 62 and the peripheral wall 72 ( FIGS. 1 , 3 , 8 , and 9 ).
  • the opening 51 is used to transmit the sound from the sound outputter 30 to the outside of the housing 50. That is, as illustrated in FIG. 3 , the housing 50 has the air passages P11 through which the sound from the sound outputter 30 is transmitted to the outside of the housing 50 via the opening 51 provided at a location (i.e., a lateral part of the housing 50) different from that of the shielding part 61c.
  • the air passages P11 transmit the sound from the sound outputter 30 to a space lateral to the housing 50.
  • the air passages P11 transmit the sound from the sound outputter 30 via the first space S51, the through holes 85, and the second space S52 to the outside of the housing 50.
  • the air passages P11 correspond to the through holes 85 on a one-to-one basis. That is, the same number of air passages P11 as the through holes 85 are provided.
  • the sound outputter 30 outputs the sound toward both the front wall 61 and the rear wall 71.
  • the sound output from the sound outputter 30 toward the front wall 61 passes through the hermetically sealed space S12, propagates through the shielding part 61c, and reaches the outside of the housing 50.
  • the sound output from the sound outputter 30 toward the rear wall 71 passes through the first space S51 (in particular, the space between the sound outputter 30 and the bottom 831 and the space between the printed wiring board 21 and the front wall 61), the through holes 85, and the second space S52 and reaches the outside of the housing 50.
  • the sound from the alarm 10 includes the sound (a first sound) which advances from the sound outputter 30 toward the front wall 61, propagates through the shielding part 61c, and reaches the outside of the housing 50 and the sound (a second sound) which advances from the sound outputter 30 toward the rear wall 71, passes through the through holes 85, and reaches the outside of the housing 50.
  • the sound a first sound
  • the sound a second sound
  • the sound a second sound
  • the specific through holes 85a of the plurality of through holes 85 are disposed at a location which is on an opposite side of the opening 82 from the holder 83 and which is apart from the sound outputter 30. Providing the specific through holes 85a suppresses the first sound and the second sound from canceling each other. More specifically, the through holes 85 are formed in the partition 80 (the partition plate 81) such that the waveform of the first sound and the waveform of the second sound are not in antiphase at a reference point in front of the housing 50. This suppresses the sound volume of the sound from the alarm 10 from decreasing.
  • the opening 51 is also used to introduce smoke into the detection space S11.
  • the housing 50 has, in the second space S52, a plurality of introduction paths P13 connecting the detection space S11 of the sensor 40 to the opening 51 of the housing 50 ( FIGS. 3 and 10 ).
  • the plurality of introduction paths P13 are defined by the plurality of guide walls 87.
  • the peripheral wall 842 of the battery accommodation part 84 also defines, together with the plurality of guide walls 87, the introduction paths P13.
  • part of the partition 80 which forms the introduction paths P13 is denoted by shading of dots.
  • the guide walls 87 extend from the peripheral edge of the partition plate 81 toward the sensor 40 such that smoke entering the second space S52 from the opening 51 is guided to the detection space S11.
  • the plurality of through holes 85 are located at the peripheral edge of the partition plate 81.
  • the plurality of through holes 85 include a through hole communicated with the introduction path P13.
  • the air passages P11 and the introduction paths P13 share the space between the opening 51 and the through holes 85. This enables the air passages P11 and the introduction path P13 to be efficiency arranged.
  • the housing 50 includes the plurality of guide walls 87 defining the introduction paths P13.
  • the plurality of guide walls 87 except for the specific guide wall 87a, are formed on the partition plate 81 of the partition 80. Some of the guide walls 87 are formed integrally with the supporting parts 86.
  • the guide wall 87a is a guide wall extending across the bottom 831 (the counter part facing the sound outputter 30) of the partition 80.
  • the specific guide wall 87a has: a pair of first wall parts 871, 871 protruding from the partition 80 toward the second cover 70; and the second wall part 74 protruding from the second cover 70 toward the partition 80.
  • the second wall part 74 is located between the pair of first wall parts 871, 871. Providing the second wall part 74 can reduce the possibility that the guide wall 87a suppresses the bottom 831 from being deformed. This can reduce the possibility that pressing of the sound outputter 30 at the bottom 831 against the front wall 61 is inhibited.
  • part of the guide wall 87a that overlaps the support projection 832 is the second wall part 74. This can further reduce the possibility that the guide wall 87a suppresses the bottom 831 from being deformed.
  • the second wall part 74 is not in contact with the bottom 831 as illustrated in FIG. 9 . This can further reduce the possibility that the guide wall 87a suppresses the bottom 831 from being deformed.
  • the shielding part 61c is a part covering the sound outputter 30 in the housing 50 and has an airtight structure.
  • the shielding part 61c can protect the sound outputter 30 from smoke, moisture, and the like. Since the shielding part 61c has the airtight structure, the sound from the sound outputter 30 does not pass directly through the shielding part 61c.
  • the housing 50 has the air passages P11, and therefore, the housing 50 can transmit the sound from the sound outputter 30 to the outside of the housing 50. via the opening 51 provided at a location different from that of the shielding part 61c.
  • the sound volume can be secured. As described above, according to the alarm 10, the sound volume can be secured while the sound generation source (the sound outputter 30) is protected.
  • providing the recess 63 increases the space available for accommodation of the circuit block 20 in the housing 50.
  • the part (electronic component 22a) of the circuit block 20 is in the recess 63 as illustrated in FIGS. 3 and 8 .
  • the size of the housing 50 in particular, the thickness of the housing 50
  • providing the recess 73 enables the space available for accommodation of the circuit block 20 in the housing 50 to be increased.
  • the part (the sensor 40) of the circuit block 20 is in the recess 73 as illustrated in FIGS. 3 and 8 .
  • the size of the housing 50 in particular, the thickness of the housing 50
  • the alarm 10 is downsized.
  • FIG. 11 shows an alarm 10A of a first variation.
  • the alarm 10A includes a housing 50A different from the housing 50 of the alarm 10.
  • the housing 50A includes a second cover 70A different from the second cover 70 of the housing 50.
  • FIG. 11 is, in a similar manner to FIG. 3 , a sectional view merely schematically illustrating the alarm 10, and only to make the description easier to understand, the thicknesses of components of the alarm 10A are emphasized.
  • the second cover 70A has openings 77.
  • the openings 77 are, in a similar manner to the opening 51, used to transmit a sound from a sound outputter 30 to the outside of the housing 50A.
  • the openings 77 are provided, for example, at a location of a rear wall 71, the location overlapping through holes 85.
  • the openings 77 are used to transmit the sound from the sound outputter 30 to the outside of the housing 50A. That is, as illustrated in FIG. 11 , the housing 50A has air passages P11A through which the sound from the sound outputter 30 to the outside of the housing 50A via the openings 77 provided at locations (i.e., rear parts of the housing 50A) different from that of the shielding part 61c. Thus, the air passages P11A transmit the sound from the sound outputter 30 to a space behind the housing 50A. In particular, the air passages P11A transmit the sound from the sound outputter 30 via a first space S51, the through holes 85, and a second space S52 to the outside of the housing 50A.
  • the openings 77 are provided at the locations, which overlap the through holes 85, of the rear wall 71.
  • the air passages P11A correspond to the through holes 85 on a one-to-one basis. That is, the same number of air passages P11A as the through holes 85 are provided.
  • the housing 50A includes not only air passages P11 but also the air passages P11A.
  • the housing 50A transmits the sound from the sound outputter 30 to both the space behind the housing 50A and a space lateral to the housing 50A. More specifically, the housing 50A transmits the sound from the sound outputter 30 to the outside of the housing 50A through the openings 51 and 77 provided at locations different from the location of the shielding part 61c.
  • the openings 77 are also used to introduce smoke into a detection space S11 in a similar manner to the opening 51.
  • the housing 50A has, in the second space S52, a plurality of introduction paths P13A connecting the detection space S11 of a sensor 40 to the outside of the housing 50A ( FIG. 11 ). That is, the housing 50A includes not only introduction paths P13 but also the introduction paths P13A. Thus, the housing 50A easily introduces smoke into the detection space S11.
  • FIGS. 12 to 14 show an alarm 10B of a second variation.
  • the alarm 10B includes a circuit block 20 and a housing 50B.
  • the alarm 10B further includes an operation button 90 and a battery 100.
  • the circuit block 20, the operation button 90, and the battery 100 are similar to those of the alarm 10, and thus, the description thereof is omitted.
  • the housing 50B accommodates the circuit block 20 (including a sound outputter 30 and a sensor 40).
  • the housing 50B also accommodates the operation button 90 and the battery 100.
  • the housing 50B has a disk shape which is a circular shape in plan view.
  • the housing 50B includes a first cover 60B and a second cover 70B.
  • the first cover 60B is a front side portion
  • the second cover 70B is a back side portion.
  • the first cover 60B and the second cover 70B are made of a synthetic resin.
  • the first cover 60B and the second cover 70B are molded products made of, for example, a synthetic resin.
  • the first cover 60B includes a front wall (a first wall) 610 and a peripheral wall (a first peripheral wall) 620.
  • the front wall 610 has a plate-like shape.
  • the front wall 610 has a circular plate shape.
  • the peripheral wall 620 protrudes from a peripheral edge of the front wall 610 toward the second cover 70B.
  • the peripheral wall 620 is cylindrical.
  • the front wall 61 has a recess 630 in a surface of the front wall 610 such that the front wall 610 has a partially reduced thickness, the surface facing an inner side of the housing 50B.
  • the front wall 610 includes a prescribed part 610a forming the recess 630 and a peripheral part 610b surrounding the prescribed part 610a.
  • providing the recess 630 increases a space for accommodation of the circuit block 20 in the housing 50B.
  • the size of the housing 50B in particular, the thickness of the housing 50B
  • the front wall 610 has a shielding part 610c covering the sound outputter 30.
  • the shielding part 610c is part of the front wall 610 and faces the sound outputter 30.
  • the front wall 610 has no opening in the shielding part 610c. That is, the shielding part 610c has an airtight structure.
  • the first cover 60B further has a tubular part 640.
  • the tubular part 640 protrudes from the shielding part 610c toward the sound outputter 30.
  • the tubular part 640 is in contact with the entire circumference of the sound outputter 30 protruding from the shielding part 610c.
  • the tubular part 640 is cylindrical.
  • the tubular part 640 has an airtight structure.
  • the tubular part 640 and the shielding part 610c form a hermetically closed box.
  • the front wall 610 of the first cover 60B has an opening 650.
  • the opening 650 is formed to expose the operation button 90.
  • the opening 650 has a circular shape.
  • the second cover 70B has a rear wall (a second wall) 710 and a peripheral wall (a second peripheral wall) 720.
  • the rear wall 710 has a plate shape.
  • the rear wall 710 has a circular plate shape.
  • the peripheral wall 720 protrudes from a peripheral edge of the rear wall 710 away from the first cover 60B.
  • the peripheral wall 720 is cylindrical.
  • the second cover 70B includes a circuit accommodation part 730.
  • the circuit accommodation part 730 is a part for accommodation of the sensor 40.
  • the circuit accommodation part 730 has a shape recessed in the rear wall 710 toward an opposite side from the first cover 60B.
  • the circuit block 20 is accommodated in the housing 50B in a state where the sensor 40 is located in the circuit accommodation part 730.
  • the second cover 70B further includes a battery accommodation part 740.
  • the battery accommodation part 740 is a part for accommodation of a battery 100.
  • the battery accommodation part 740 has a part in the rear wall 710, the part recessed toward the first cover 60B.
  • the second cover 70B further includes a plurality of supporting parts 750.
  • the plurality of supporting parts 750 support the front wall 610 of the first cover 60B with respect to the second cover 70B.
  • the plurality of supporting parts 750 each have a prism shape.
  • the plurality of supporting parts 750 determines the distance between the front wall 610 and the rear wall 710. The distance between the front wall 610 and the rear wall 710 and the dimensions of the peripheral wall 620 and the peripheral wall 720 are determined such that the peripheral wall 620 and the peripheral wall 720 do not come into contact with each other and an opening 510 is formed between the peripheral wall 620 and the peripheral wall 720 (see FIG. 12 ).
  • the second cover 70B includes a plurality of attachment pawls 760 provided on the rear wall 710.
  • the plurality of attachment pawls 760 protrude from a surface of the rear wall 710, the surface facing an outer side of the housing 50B.
  • the plurality of attachment pawls 760 are used to attach the alarm 10B to the above-described attachment base.
  • the opening 510 described above is used to transmit a sound from the sound outputter 30 to the outside of the housing 50B. That is, as illustrated in FIG. 12 , the housing 50B has air passages P11B through which the sound from the sound outputter 30 is transmitted to the outside of the housing 50B via the opening 510 provided at a location (i.e., a lateral part of the housing 50B) different from that of the shielding part 610c. Thus, the air passages P11B transmit the sound from the sound outputter 30 to a space lateral to the housing 50B.
  • the opening 510 is also used to introduce smoke into a detection space S11.
  • the housing 50B has, in the housing 50B, a plurality of introduction paths P13B connecting the detection space S11 of the sensor 40 to the opening 510 of the housing 50B (see FIG. 12 ).
  • the plurality of introduction paths P13B are defined by a plurality of guide walls 770.
  • the guide walls 770 extend from the peripheral edge of the rear wall 710 toward the sensor 40 such that smoke entering the housing 50B from the opening 51 is guided to the detection space S11. As illustrated in FIG. 13 , the plurality of guide walls 770 are formed on the rear wall 710 of the second cover 70B. The plurality of guide walls 770 are formed integrally with some of the supporting parts 750.
  • the housing 50B includes the first cover 60B and the second cover 70B. That is, the housing 50B includes no partition 80 unlike the housing 50. That is, the partition 80 is not essential.
  • each component of the alarm 10 is not limited to that in the embodiment and may be accordingly modified.
  • the sound outputter 30 and the sensor 40 are not limited to those in the example described above but may be replaced with conventionally known devices.
  • the circuit block 20 does not necessarily have to include both the sound outputter 30 and the sensor 40.
  • the circuit block 20 of the alarm 10 does not have to include the sensor 40. In this case, no introduction path P13 is required.
  • the circuit block 20 does not have to include a switch, and in this case, neither the operation button 90 nor the opening 65 are required.
  • the shape of the housing 50 of the alarm 10 is not limited to that of the embodiment but may accordingly be modified.
  • the housing 50 does not have to have a circular shape but may be rectangular or polygonal in plan view.
  • the first cover 60 and the second cover 70 also does not have to have a circular shape but may be rectangular or polygonal in plan view.
  • the plurality of through holes 85 and 85a are arranged to surround the sensor 40.
  • the one through hole 85 is preferably formed to surround the sensor 40.
  • the housing 50 has at least one or more through holes 85 and does not necessarily have to have a plurality of through holes 85.
  • the through hole(s) 85 does not have to have an arc-like shape but may have a circular shape, a polygonal shape, or any other desired shape.
  • the location of the through hole(s) 85 is not limited to that described in the above-described embodiment, and the through hole 85 may be disposed at an appropriate location.
  • the housing 50 includes at least one or more air passages P11 and does not necessarily have to have a plurality of air passages P11.
  • the air passages P11 do not have to correspond to the through holes 85 on a one-to-one basis.
  • the air passage P11 may have two or more through holes 85, and the two or more through holes 85 may be present in series or in parallel in the air passage P11.
  • the housing 50 does not necessarily have to have a plurality of introduction paths P13 and may, for example, include only one introduction path P13.
  • the introduction path P13 does not have to share the opening 51 with the air passage P11. Note that when the circuit block 20 of the alarm 10 includes no sensor 40, the introduction path P13 is naturally not required.
  • the shielding part 61c is part of the front wall 61, but this is a mere example.
  • part of the rear wall 71 may be a shielding part. That is, in the housing 50, a part facing the sound outputter 30 (in particular, a part located in front of the diaphragm 31 of the sound outputter 30) may be the shielding part.
  • the shielding part 61c does not necessarily have to have the airtight structure.
  • the shielding part 61c may have one or more sound holes.
  • the shielding part 61c may function as a cone or a diaphragm to the sound from the sound outputter 30. That is, the shielding part 61c may have a structure that amplifies a vibration.
  • the shielding part 61c may have a structure that increases the sound pressure of a sound (see arrow P12 in FIG. 3 ) that propagates from the sound outputter 30 through the shielding part 61c and then reaches the outside of the housing 50 to be higher than the sound pressure of a sound that propagates from the sound outputter 30 through air passages P11 (see FIG. 3 ) and then reaches the outside of the housing 50.
  • the thickness of the prescribed part 61a gradually decreases from the edge of the prescribed part 61a toward the center but may stepwise decrease. However, a sink mark at the time of shaping is more easily suppressed when the thickness of the prescribed part 61a gradually decreases. This facilitates the formation of the housing 50 by a shaping technique.
  • the prescribed part 61a is at least thinner than the peripheral part 61b and may have uniform thickness.
  • the surface, which faces the inner side of the housing 50, of the front wall 61 may have, not only at the prescribed part 61a but at the entirety of the surface, a greater curvature than a surface of the front wall 61, the surface facing the outer side of the housing 50.
  • the first cover 60 may have a plurality of prescribed parts 61a (i.e., recesses 63).
  • the prescribed part 71a has a uniform thickness, but the thickness of the prescribed part 71a may gradually or stepwise decrease from the edge of the prescribed part 71a toward the center.
  • the surface, which faces the inner side of the housing 50, of the rear wall 71 may have, at least at the prescribed part 71a, a greater curvature than a surface of the rear wall 71, the surface facing the outer side of the housing 50.
  • the second cover 70 may have a plurality of prescribed parts 71a (i.e., recesses 73).
  • the thicknesses of both the front wall 61 and the rear wall 71 partially decrease. That is, at least one of the front wall 61 or the rear wall 71 has a recess 63 or 73 in the surface of the at least one of the front wall 61 or the rear wall 71 such that the at least one of the front wall 61 or the rear wall 71 has a reduced thickness, the surface facing the inner side of the housing 50.
  • the alarm 10A includes both the air passage P11 and the air passage P11A, but in this case, the air passage P11 is not essential. That is, in the alarm 10A, the housing 50A does not have to have the opening 51.
  • a disaster prevention device (10; 10A; 10B) of a first aspect includes a circuit block (20) and a housing (50; 50A; 50B).
  • the housing (50; 50A; 50B) includes a front wall (61; 610) and a rear wall (71; 71A) and accommodates the circuit block (20) between the front wall (61; 610) and the rear wall (71; 71A).
  • At least one of the front wall (61; 610) or the rear wall (71; 71A) has a recess (63, 73; 630) in a surface of the at least one of the front wall (61; 610) or the rear wall (71; 71A) such that the at least one of the front wall (61; 610) or the rear wall (71; 71A) has a partially reduced thickness, the surface facing an inner side of the housing (50; 50A; 50B).
  • the circuit block (20) has a part (22a, 40) located in the recess (63,73;630). According to the first aspect, the size is reduced.
  • a disaster prevention device (10; 10A; 10B) of a second aspect would be realized in combination with the first aspect.
  • the rear wall (71; 71A) has the recess (73) in the surface of the rear wall (71; 71A) such that the rear wall (71; 71A) has the partially reduced thickness, the surface of the rear wall (71; 71A) facing the inner side of the housing (50; 50A).
  • the second aspect enables the disaster prevention device to be downsized.
  • a disaster prevention device (10; 10A; 10B) of a third aspect would be realized in combination with the second aspect.
  • the rear wall (71; 71A) has a prescribed part (71a) forming the recess (73) and a peripheral part (71b) surrounding the prescribed part (71a).
  • the prescribed part (71a) is thinner than the peripheral part (71b).
  • a disaster prevention device (10; 10A; 10B) of a fourth aspect would be realized in combination with the third aspect.
  • the prescribed part (71a) protrudes farther in the outside of the housing (50; 50A) than the peripheral part (71b).
  • the fourth aspect enables the disaster prevention device to be downsized.
  • a disaster prevention device (10; 10A; 10B) of a fifth aspect would be realized in combination with the first aspect.
  • the front wall (61; 610) has the recess (63; 630) in the surface of the front wall (61; 610) such that the front wall (61; 610) has the partially reduced thickness, the surface of the front wall (61; 610) facing the inner side of the housing (50; 50A; 50B).
  • the fifth aspect enables the disaster prevention device to be downsized.
  • a disaster prevention device (10; 10A; 10B) of a sixth aspect would be realized in combination with the fifth aspect.
  • the prescribed part (61a; 610a) forming the recess (63; 630) has a thickness that gradually changes.
  • the sixth aspect facilitates shaping of the housing (50; 50A; 50B) by a shaping technique.
  • a disaster prevention device (10; 10A; 10B) of a seventh aspect would be realized in combination with the sixth aspect.
  • the thickness of the prescribed part (61a; 610a) gradually decreases from an edge to a center of the prescribed part (61a; 610a).
  • the seventh aspect facilitates shaping of the housing (50; 50A; 50B) by a shaping technique.
  • a disaster prevention device (10; 10A; 10B) of an eighth aspect would be realized in combination with the sixth or seventh aspect.
  • the surface, which faces the inner side of the housing (50; 50A; 50B), of the front wall (61; 610) has, at least in the prescribed part (61a; 610a), a greater curvature than a surface of the front wall (61; 610), the surface facing an outer side of the housing (50; 50A; 50B).
  • the eighth aspect facilitates shaping of the housing (50; 50A; 50B) by a shaping technique.
  • a disaster prevention device (10; 10A; 10B) of a ninth aspect would be realized in combination with the eighth aspect.
  • the front wall (61; 610) has the prescribed part (61a; 610a) and a peripheral part (61b; 610b) surrounding the prescribed part (61a; 610a).
  • the ninth aspect enables the disaster prevention device to be downsized.
  • a disaster prevention device (10; 10A; 10B) of a tenth aspect would be realized in combination with the ninth aspect.
  • the prescribed part (61a; 610a) and the peripheral part (61b; 610b) of the front wall (61; 610) have a same curvature on the outer side of the housing (50; 50A; 50B).
  • the front wall (61; 610) has a greater curvature in the prescribed part (61a; 610a) than in the peripheral part (61b; 610b) on the inner side of the housing (50; 50A; 50B).
  • the tenth aspect facilitates shaping of the housing (50; 50A; 50B) by a shaping technique.
  • a disaster prevention device (10; 10A) of an eleventh aspect would be realized in combination with any one of the sixth to tenth aspects.
  • the prescribed part (61a) corresponds to a central part of the front wall (61; 610).
  • the eleventh aspect enables the disaster prevention device to be downsized.
  • the housing (50; 50A; 50B) includes a first cover (60; 60B) having the front wall (61; 610), a second cover (70; 70A) having the rear wall (71; 71A), and a partition (80).
  • the partition (80) is disposed between the first cover (60; 60B) and the second cover (70; 70A).
  • the circuit block (20) is accommodated in a divided manner on a first cover (60; 60B) side and a second cover (70; 70A) side.
  • the circuit block (20) includes: a sound outputter (30) configured to generate a sound; and a sensor (40) having a detection space (S11) and configured to detect a target substance in the detection space (S11).
  • the sound outputter (30) is disposed in a first space (S51) between the first cover (60; 60B) and the partition (80).
  • the sensor (40) is disposed in a second space (S52) between the second cover (70; 70A) and the partition (80).
  • the thirteenth aspect reduces the possibility that the sensor (40) is influenced by the sound generated by the sound outputter (30).
  • a disaster prevention device (10; 10A) of a fourteenth aspect would be realized in combination with the thirteenth aspect.
  • the housing (50; 50A; 50B) includes an air passage (P11; P11A; P11B) configured to transmit the sound from the sound outputter (30) to a space behind or lateral to the housing (50; 50A; 50B).
  • the fourteenth aspect improves acoustic characteristics of the disaster prevention device.
  • a disaster prevention device (10; 10A; 10B) of a fifteenth aspect would be realized in combination with the fourteenth aspect.
  • the front wall (61; 610) has a shielding part (61c; 610c) covering the sound outputter and having an airtight structure.
  • the sound volume is secured while the sound generation source is protected.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
EP19827345.0A 2018-06-28 2019-06-12 Dispositif anti-sinistre Active EP3816954B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018123640A JP2020004130A (ja) 2018-06-28 2018-06-28 防災機器
PCT/JP2019/023189 WO2020004022A1 (fr) 2018-06-28 2019-06-12 Dispositif anti-sinistre

Publications (3)

Publication Number Publication Date
EP3816954A1 true EP3816954A1 (fr) 2021-05-05
EP3816954A4 EP3816954A4 (fr) 2021-08-18
EP3816954B1 EP3816954B1 (fr) 2024-07-31

Family

ID=68986403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19827345.0A Active EP3816954B1 (fr) 2018-06-28 2019-06-12 Dispositif anti-sinistre

Country Status (3)

Country Link
EP (1) EP3816954B1 (fr)
JP (1) JP2020004130A (fr)
WO (1) WO2020004022A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05281975A (ja) * 1992-03-10 1993-10-29 Rohm Co Ltd 圧電発音体
JP3284480B2 (ja) * 1993-03-31 2002-05-20 能美防災株式会社 火災感知器
JP2569080Y2 (ja) * 1993-06-24 1998-04-22 矢崎総業株式会社 着脱カバーの係止構造
US6778091B2 (en) * 2001-01-09 2004-08-17 Qualey, Iii James R. Smoke chamber
JP5172412B2 (ja) * 2008-03-24 2013-03-27 パナソニック株式会社 火災警報器
JP6241639B2 (ja) * 2012-09-13 2017-12-06 パナソニックＩｐマネジメント株式会社 防災受信機
JP6562337B2 (ja) 2015-01-09 2019-08-21 パナソニックＩｐマネジメント株式会社 火災感知器
EP3376483A4 (fr) * 2015-10-26 2019-09-18 Hochiki Corporation Dispositif d'alarme

Also Published As

Publication number Publication date
JP2020004130A (ja) 2020-01-09
EP3816954B1 (fr) 2024-07-31
EP3816954A4 (fr) 2021-08-18
WO2020004022A1 (fr) 2020-01-02

Similar Documents

Publication Publication Date Title
EP2273464B1 (fr) Dispositif avertisseur sonore
EP2093730B1 (fr) Détecteur d'incendie
JP7519609B2 (ja) 警報器、及び警報システム
TW200941415A (en) Photoelectric smoke detector
JP2012256250A (ja) 煙感知器
EP3816954B1 (fr) Dispositif anti-sinistre
JP4887441B2 (ja) 警報出力器
EP3681172A1 (fr) Appareil acoustique
JP2012058945A (ja) 炎感知器
AU2004267508B2 (en) A compact smoke alarm
JP2014086962A (ja) 電気機器の防水構造
GB2421620A (en) Fire alarm sounder
JP2024090252A (ja) 防災機器
JP5322985B2 (ja) 警報器
JP2009259261A (ja) 火災警報システム
WO2011007220A1 (fr) Avertisseur d'incendie
AU2011203296B2 (en) Sounder
WO2008139183A1 (fr) Détecteur
JP2019168832A (ja) 煙感知器
JP2009157424A (ja) 警報器
EP3742413A1 (fr) Détecteur de fumée
JP2019197510A (ja) 警報音響装置
JP2002074539A (ja) 火災感知器

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20201223

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: G08B0017000000

Ipc: G08B0017107000

A4 Supplementary search report drawn up and despatched

Effective date: 20210720

RIC1 Information provided on ipc code assigned before grant

Ipc: G08B 17/107 20060101AFI20210714BHEP

Ipc: G08B 17/113 20060101ALI20210714BHEP

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230519

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240207

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED