CN117173844B - LED audible and visual alarm device with dampproofing function - Google Patents

LED audible and visual alarm device with dampproofing function Download PDF

Info

Publication number
CN117173844B
CN117173844B CN202311450269.5A CN202311450269A CN117173844B CN 117173844 B CN117173844 B CN 117173844B CN 202311450269 A CN202311450269 A CN 202311450269A CN 117173844 B CN117173844 B CN 117173844B
Authority
CN
China
Prior art keywords
mounting ring
rotating
led
lampshade
visual alarm
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.)
Active
Application number
CN202311450269.5A
Other languages
Chinese (zh)
Other versions
CN117173844A (en
Inventor
钱正忠
黄井成
吴春荣
王小林
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.)
Nantong Meilai Industrial Intelligent Technology Co ltd
Original Assignee
Nantong Meilai Industrial Intelligent Technology 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 Nantong Meilai Industrial Intelligent Technology Co ltd filed Critical Nantong Meilai Industrial Intelligent Technology Co ltd
Priority to CN202311450269.5A priority Critical patent/CN117173844B/en
Publication of CN117173844A publication Critical patent/CN117173844A/en
Application granted granted Critical
Publication of CN117173844B publication Critical patent/CN117173844B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The invention relates to the technical field of audible and visual alarms, and discloses an LED audible and visual alarm device with a dampproof function. The upper surface of the base is provided with a first mounting ring, a second mounting ring, a first fixing ring and a power supply bin, and a power supply is arranged in the power supply bin; the lampshade is respectively connected with the first mounting ring and the second mounting ring through threads, the lampshade is provided with an air outlet, and the whole lampshade is made of transparent materials; the rotating cover is provided with a rotating plate, a permanent magnet and fan blades, the lampshade is rotationally connected with the rotating cover, and the rotating plate comprises a cleaning layer, a rotating layer and a reflecting layer from outside to inside. The invention has the advantages that the fan blades are arranged in the rotating cover, the fan blades are driven to rotate by the rotation of the rotating cover, the air circulation is driven, and the influence of moist air on internal circuits and accessories is reduced.

Description

LED audible and visual alarm device with dampproofing function
Technical Field
The invention relates to the technical field of audible and visual alarms, in particular to an LED audible and visual alarm device with a dampproof function.
Background
The LED audible and visual alarm device is an alarm signal device which is used in dangerous places and can send alarm signals to people through sound and various lights, can be used outdoors or indoors, also can be used in places such as factories and indoors, and can be used for starting an audible and visual alarm circuit to send out audible and visual alarm signals when emergency such as accidents or fires happen on production sites, thereby achieving the purpose of alarming, and also can be used with a manual alarm button to achieve the purpose of simple audible and visual alarm.
The LED audible and visual alarm device is usually fixedly arranged at a certain position, if the arranged position is at a dark place, moist air can corrode internal circuits and accessories of the LED audible and visual alarm device, the service life is shortened, and the problem of inaccurate detection easily occurs.
Disclosure of Invention
(one) technical problem: aiming at the defects of the prior art, the invention provides the LED audible and visual alarm device with the dampproof function, and solves the problems that the traditional LED audible and visual alarm device is corroded by humid air after being installed in a dark place for a long time, the service life is shortened, and the detection is inaccurate.
(II) technical scheme: in order to solve the problems, the invention provides an LED audible and visual alarm device with a dampproof function, which comprises a base, a lampshade, a rotating cover, a coil, an LED warning lamp, a warning horn, a smoke detector, a humidity sensor, a temperature sensor and a circuit controller, wherein a first mounting ring, a second mounting ring, a first fixing ring and a power supply bin are arranged on the upper surface of the base, the first mounting ring is provided with internal threads, the diameter of the second mounting ring is smaller than that of the first mounting ring, the second mounting ring and the first mounting ring are coaxial, the second mounting ring is provided with external threads, the power supply bin is arranged in the central position of the upper surface of the base, the first fixing ring is arranged on the upper surface of the base, the upper surface of the power supply bin is provided with an LED lamp holder, and the power supply bin is electrically connected with the LED lamp holder, the circuit controller, the coil, the warning horn, the humidity smoke detector and the temperature sensor respectively;
threads are arranged on the inner side and the outer side of the lower end of the lampshade, the lampshade is respectively connected with the first mounting ring and the second mounting ring through threads, a through air outlet is formed in the axis of the lampshade, a rotating ring is arranged on the side wall inside the lampshade, a connecting table is arranged at the axis of the top end inside the lampshade, and the whole lampshade is made of transparent materials;
the rotating cover comprises rotating plates, permanent magnets and fan blades, wherein the rotating plates respectively comprise a cleaning layer, a rotating layer and a reflecting layer from outside to inside, the fan blades are fixedly arranged on the inner side wall of the rotating plates, the permanent magnets are fixedly arranged at the bottom of the inner side of the rotating cover, the rotating cover is rotationally connected with the lampshade, the number of the rotating plates is four, and the four rotating plates are uniformly distributed;
the coil is fixedly arranged on the upper surface of the base, and the coil and the permanent magnet are coaxial;
the LED warning lamp is electrically connected with the LED lamp holder;
the circuit controller is fixedly arranged on the upper surface of the base, and the circuit controller is respectively and electrically connected with the coil, the LED lamp holder and the warning loudspeaker.
The number of the first fixing rings is four, and the four first fixing rings are arranged on the inner side of the second mounting ring.
The coil passes through the first fixing ring and is fixedly connected with the base.
The lower end of the outer side wall of the lampshade is provided with a mounting ring, the lower end of the mounting ring is provided with a sealing gasket, and the side wall of the lampshade is uniformly provided with ventilation holes.
At least twenty ventilation holes are formed.
The rotary cover is characterized in that a second fixed ring is arranged at the lower end of the inner side wall of the rotary cover, the second fixed ring is fixedly connected with the permanent magnet, a rotary groove is formed in the outer side surface of the rotary plate, a penetrating connecting hole is formed in the axis of the rotary cover, the rotary groove is rotationally connected with the rotary ring, and the connecting hole is rotationally connected with the connecting table.
The number of the fan blades is four, and the number of the second fixing rings is four.
The LED warning lamp is fixedly arranged at the upper end of the LED lamp holder, and the warning horn, the smoke detector, the humidity sensor and the temperature sensor are fixedly arranged on the upper surface of the base and in the second mounting ring.
The number of the warning horns is three.
(III) beneficial effects: the invention has the advantages that:
the fan blades are arranged in the rotating cover, and are driven to rotate through rotation of the rotating cover, so that air circulation is driven, and influence of moist air on internal circuits and accessories is reduced.
The cleaning layer is arranged on the outermost layer of the rotating plate, and the cleaning layer cleans the inner side of the lampshade when rotating, so that dust is prevented from adhering to the inner side of the lampshade to influence the light effect.
Drawings
FIG. 1 is a schematic diagram of a perspective structure of an LED audible and visual alarm device with a moisture-proof function;
FIG. 2 is an exploded view of the LED audible and visual alarm device with moisture protection shown in FIG. 1;
FIG. 3 is a cross-sectional view of the LED audible and visual alarm device with moisture-proof function shown in FIG. 1;
FIG. 4 is a schematic perspective view of a base of the present invention;
figure 5 is a cross-sectional view of a lamp housing of the present invention;
fig. 6 is a schematic perspective view of a rotating cover according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-6, the present invention provides a technical solution: an LED audible and visual alarm device 100 with a dampproof function comprises a base 1, a lampshade 2, a rotary cover 3, a coil 4, an LED warning lamp 5, a warning loudspeaker 6, a smoke detector 7, a humidity sensor 8, a temperature sensor 9 and a circuit controller 10.
The base 1 upper surface is provided with first collar 11, second collar 12, first solid fixed ring 15 and power storehouse 13, and first collar 11 is provided with the internal thread, and second collar 12 diameter is less than first collar, and second collar 12 is coaxial with first collar 11, and second collar 12 is provided with the external screw thread, and first collar 11 is used for connecting lamp shade 2 with second collar 12. The power supply bin 13 is arranged at the center of the upper surface of the base 1, an LED lamp holder 14 is arranged on the upper surface of the power supply bin 13, a power supply is arranged in the power supply bin 13 and is respectively electrically connected with the LED lamp holder 14, the coil 4, the warning horn 6, the smoke detector 7, the humidity sensor 8, the temperature sensor 9 and the circuit controller 10, the first fixing rings 15 are arranged on the upper surface of the base 1, the number of the first fixing rings 15 is four, and the first fixing rings 15 are used for fixing the coil 4.
Threads are arranged on the inner side and the outer side of the lower end of the lampshade 2, the lower end of the lampshade 2 is respectively connected with the first mounting ring 11 and the second mounting ring 12 through threads, a penetrating air outlet hole 21 is formed in the axis of the lampshade 2, the air outlet hole 21 is used for discharging air in the lampshade 2, ventilation holes 22 are uniformly formed in the side wall of the lampshade 2, the number of the ventilation holes 22 is at least twenty, and the ventilation holes 22 are used for enabling external air to enter the lampshade 2. The inside lateral wall of lamp shade 2 is provided with swivel becket 23, and lamp shade 2 inboard top axle center department is provided with connection platform 26, and swivel becket 23 and connection platform 26 are used for realizing the rotation of lamp shade 2 and rotatory cover 3 and are connected, and lamp shade 2 wholly is transparent material preparation to guarantee that inside light can pierce through lamp shade 2. The lower end of the outer side wall of the lampshade 2 is provided with a mounting ring 24, and the lower end of the mounting ring 24 is provided with a sealing gasket 25.
The rotating cover 3 is provided with the rotating plate 31, the permanent magnet 32, the second fixing ring 33 and the fan blades 34, the rotating plate 31 comprises a cleaning layer 311, a rotating layer 312 and a reflecting layer 313 from outside to inside, the cleaning layer 311 is used for erasing sundries on the inner side wall of the lampshade 2, the lamplight can be ensured to be clearly transmitted through the lampshade 2, and the reflecting layer 313 is used for reflecting the lamplight, so that the lamplight emitted to the outside is brighter. The projection of the rotating plates 31 on the horizontal plane is in a sector shape with an included angle of 45 degrees, the number of the rotating plates 31 is four, the four rotating plates 31 are uniformly distributed, and the projection included angles of the adjacent rotating plates 31 on the horizontal plane are all 45 degrees. The fan blades 34 are fixedly arranged on the inner side wall of the rotating plate 31, the number of the fan blades 34 is two, the second fixing rings 33 are arranged at the bottom of the rotating cover 3, the number of the second fixing rings 33 is four, and the permanent magnets 32 penetrate through the second fixing rings 33 to be fixedly connected with the rotating cover 3. The outer side surface of the rotating plate 31 is provided with a rotating groove 36, the axle center of the rotating cover 3 is provided with a connecting hole 35 penetrating through, the rotating groove 36 is rotationally connected with the rotating ring 23, the connecting hole 35 is rotationally connected with the connecting table 26, and the rotating cover 3 is rotationally connected with the lampshade 2. The coil 4 is electrified and the permanent magnet 32 generates interaction force, the permanent magnet 32 drives the rotating cover 3 to rotate, the fan blades 34 upwards discharge the gas in the rotating cover 3 through the connecting holes 35 in the rotating cover 3 rotating process, and meanwhile, the light of the LED warning lamp is blocked periodically along with the rotation of the rotating plate 31, so that a flickering light effect is generated.
The coil 4 passes through the first fixing ring 15 and is fixedly connected with the base 1, and the coil 4 and the permanent magnet 32 are coaxial.
The LED warning lamp 5 is fixedly arranged at the upper end of the LED lamp holder 14 and is electrically connected with the LED lamp holder 14.
The warning horn 6, the smoke detector 7, the humidity sensor 8, the temperature sensor 9 and the circuit controller 10 are fixedly arranged on the upper surface of the base 1 and are arranged inside the second mounting ring 12, the warning horn 6, the smoke detector 7, the humidity sensor 8, the temperature sensor 9 and the circuit controller 10 are respectively electrically connected with a power supply, the circuit controller 10 is respectively electrically connected with the LED lamp holder 14, the warning horn 6 and the coil 4, and the circuit controller 10 receives information detected by the smoke detector 7, the humidity sensor 8 and the temperature sensor 9 and controls the working states of the LED lamp holder 14, the warning horn 6 and the coil 4. The smoke detector 7 is used for detecting the smoke concentration in the environment, the temperature sensor 9 is used for detecting the temperature of the environment, and when the smoke detector 7 and the temperature sensor 9 detect abnormal information, the circuit controller 10 controls the LED lamp holder 14, the warning horn 6 and the coil 4 to work; when the humidity sensor 8 detects that the air humidity is abnormal, the circuit controller 10 controls the coil 4 to be electrified, and the rotating cover 3 rotates to drive air circulation, so that the moist air is prevented from corroding equipment.
The number of warning horns 6 is three.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. An LED audible and visual alarm device that possesses dampproofing function, its characterized in that: the intelligent smoke detector comprises a base, a lamp shade, a rotating cover, a coil, an LED warning lamp, a warning horn, a smoke detector, a humidity sensor, a temperature sensor and a circuit controller, wherein a first mounting ring, a second mounting ring, a first fixing ring and a power supply bin are arranged on the upper surface of the base, the first mounting ring is provided with internal threads, the diameter of the second mounting ring is smaller than that of the first mounting ring, the second mounting ring and the first mounting ring are coaxial, the second mounting ring is provided with external threads, the power supply bin is arranged at the central position of the upper surface of the base, the first fixing ring is arranged on the upper surface of the base, an LED lamp holder is arranged on the upper surface of the power supply bin, and the power supply is respectively electrically connected with the LED lamp holder, the circuit controller, the coil, the warning horn, the smoke detector, the humidity sensor and the temperature sensor;
threads are arranged on the inner side and the outer side of the lower end of the lampshade, the lampshade is respectively connected with the first mounting ring and the second mounting ring through threads, a through air outlet is formed in the axis of the lampshade, a rotating ring is arranged on the side wall inside the lampshade, a connecting table is arranged at the axis of the top end inside the lampshade, and the whole lampshade is made of transparent materials;
the rotating cover comprises rotating plates, permanent magnets and fan blades, wherein the rotating plates respectively comprise a cleaning layer, a rotating layer and a reflecting layer from outside to inside, the fan blades are fixedly arranged on the inner side wall of the rotating plates, the permanent magnets are fixedly arranged at the bottom of the inner side of the rotating cover, the rotating cover is rotationally connected with the lampshade, the number of the rotating plates is four, and the four rotating plates are uniformly distributed;
the coil is fixedly arranged on the upper surface of the base, and the coil and the permanent magnet are coaxial;
the LED warning lamp is electrically connected with the LED lamp holder;
the LED warning lamp comprises a base, a circuit controller, a fan blade, a permanent magnet, a rotating plate, a fan blade, a rotating cover, a permanent magnet, a rotating plate, a connecting table, a coil, a permanent magnet, a fan blade, a rotating cover, a rotating plate, a rotating groove, a connecting hole penetrating through the rotating plate, a connecting hole and a rotating plate.
2. The LED audible and visual alarm with moisture protection function according to claim 1, wherein: the number of the first fixing rings is four, and the four first fixing rings are arranged on the inner side of the second mounting ring.
3. The LED audible and visual alarm with moisture protection function according to claim 2, wherein: the coil passes through the first fixing ring and is fixedly connected with the base.
4. The LED audible and visual alarm with moisture protection function according to claim 1, wherein: the lower end of the outer side wall of the lampshade is provided with a mounting ring, the lower end of the mounting ring is provided with a sealing gasket, and the side wall of the lampshade is uniformly provided with ventilation holes.
5. The LED audible and visual alarm with moisture protection function according to claim 4, wherein: at least twenty ventilation holes are formed.
6. The LED audible and visual alarm with moisture protection function according to claim 5, wherein: the number of the fan blades is four, and the number of the second fixing rings is four.
7. The LED audible and visual alarm with moisture protection function according to claim 1, wherein: the LED warning lamp is fixedly arranged at the upper end of the LED lamp holder, and the warning horn, the smoke detector, the humidity sensor and the temperature sensor are fixedly arranged on the upper surface of the base and in the second mounting ring.
8. The LED audible and visual alarm with moisture protection function according to claim 1, wherein: the number of the warning horns is three.
CN202311450269.5A 2023-11-02 2023-11-02 LED audible and visual alarm device with dampproofing function Active CN117173844B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311450269.5A CN117173844B (en) 2023-11-02 2023-11-02 LED audible and visual alarm device with dampproofing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311450269.5A CN117173844B (en) 2023-11-02 2023-11-02 LED audible and visual alarm device with dampproofing function

Publications (2)

Publication Number Publication Date
CN117173844A CN117173844A (en) 2023-12-05
CN117173844B true CN117173844B (en) 2024-03-08

Family

ID=88930206

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311450269.5A Active CN117173844B (en) 2023-11-02 2023-11-02 LED audible and visual alarm device with dampproofing function

Country Status (1)

Country Link
CN (1) CN117173844B (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM267824U (en) * 2004-11-03 2005-06-11 Adda Corp Heat sink fan having light-emitting effect
CN101127468A (en) * 2007-07-11 2008-02-20 无锡开普动力有限公司 A cooling fan structure for permanent magnetic generator
DE102006040014A1 (en) * 2006-08-25 2008-03-13 Werner Reiser Light for use as e.g. signal light of police- and fire brigade emergency vehicle, has orifice arranged between light source and external shell, provided in hemispherical shaped and rotated by drive with less speed with respect to shell
CN101619731A (en) * 2008-07-04 2010-01-06 富准精密工业(深圳)有限公司 Cooling fan
TWM388432U (en) * 2010-05-13 2010-09-11 Ching Mars Corp Vehicle alarm lamps
CN102980095A (en) * 2012-11-03 2013-03-20 河南锐骑文化传播有限公司 Light-emitting diode (LED) spot light
CN206001300U (en) * 2016-08-31 2017-03-08 刘贤平 A kind of LEDbulb lamp
CN109210894A (en) * 2018-10-26 2019-01-15 北京交通大学 A kind of asphalt rotating thin-film drying unit
CN109764260A (en) * 2019-01-28 2019-05-17 顾怡宁 A kind of energy-saving lamp
CN212537738U (en) * 2020-08-25 2021-02-12 四川省宝路华交通设施有限公司 Vehicle-mounted warning lamp
CN212990252U (en) * 2020-10-29 2021-04-16 石家庄铁道大学 Railway traction power supply fault alarm lamp
CN216814031U (en) * 2022-04-01 2022-06-24 李婷 Super high-rise warning lamp device
CN216924060U (en) * 2021-11-12 2022-07-08 深圳市星河谷科技有限公司 Multifunctional LED lamp
CN114777050A (en) * 2022-04-27 2022-07-22 六安市世辉照明科技有限公司 Program-controlled Christmas LED lamp with good heat dissipation performance
CN116682219A (en) * 2023-07-03 2023-09-01 深圳市尚为照明有限公司 Acousto-optic alarm lamp

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM267824U (en) * 2004-11-03 2005-06-11 Adda Corp Heat sink fan having light-emitting effect
DE102006040014A1 (en) * 2006-08-25 2008-03-13 Werner Reiser Light for use as e.g. signal light of police- and fire brigade emergency vehicle, has orifice arranged between light source and external shell, provided in hemispherical shaped and rotated by drive with less speed with respect to shell
CN101127468A (en) * 2007-07-11 2008-02-20 无锡开普动力有限公司 A cooling fan structure for permanent magnetic generator
CN101619731A (en) * 2008-07-04 2010-01-06 富准精密工业(深圳)有限公司 Cooling fan
TWM388432U (en) * 2010-05-13 2010-09-11 Ching Mars Corp Vehicle alarm lamps
CN102980095A (en) * 2012-11-03 2013-03-20 河南锐骑文化传播有限公司 Light-emitting diode (LED) spot light
CN206001300U (en) * 2016-08-31 2017-03-08 刘贤平 A kind of LEDbulb lamp
CN109210894A (en) * 2018-10-26 2019-01-15 北京交通大学 A kind of asphalt rotating thin-film drying unit
CN109764260A (en) * 2019-01-28 2019-05-17 顾怡宁 A kind of energy-saving lamp
CN212537738U (en) * 2020-08-25 2021-02-12 四川省宝路华交通设施有限公司 Vehicle-mounted warning lamp
CN212990252U (en) * 2020-10-29 2021-04-16 石家庄铁道大学 Railway traction power supply fault alarm lamp
CN216924060U (en) * 2021-11-12 2022-07-08 深圳市星河谷科技有限公司 Multifunctional LED lamp
CN216814031U (en) * 2022-04-01 2022-06-24 李婷 Super high-rise warning lamp device
CN114777050A (en) * 2022-04-27 2022-07-22 六安市世辉照明科技有限公司 Program-controlled Christmas LED lamp with good heat dissipation performance
CN116682219A (en) * 2023-07-03 2023-09-01 深圳市尚为照明有限公司 Acousto-optic alarm lamp

Also Published As

Publication number Publication date
CN117173844A (en) 2023-12-05

Similar Documents

Publication Publication Date Title
US6626557B1 (en) Multi-colored industrial signal device
CN213458354U (en) Household fire monitoring and alarming device
WO2006031487A2 (en) Explosion-proof multi-status multi-color visual indicator
WO2016161885A1 (en) Modular illumination device having multiple detection functions
CN117173844B (en) LED audible and visual alarm device with dampproofing function
CN212675678U (en) Intelligent property remote video analysis alarm device
JP6526828B2 (en) Modular lighting device with multiple detection functions
CN201196354Y (en) Escaping indicator light
CN210039028U (en) Smoke alarm for indoor fire fighting of building
CN213365722U (en) Novel household smoke alarm
CN112669559A (en) Fire detector for electric appliance
CN217008360U (en) Wireless fire alarm device for fire engineering
JP6681130B2 (en) Fire detector
CN114234089A (en) LED ceiling lamp is used in sitting room with dustproof function
CN211124302U (en) Dustproof smoke alarm
CN211399704U (en) LED with alarm function for smart home
CN220933586U (en) Fire monitoring alarm device
CN213183015U (en) Fire detection alarm based on single chip microcomputer
CN219017072U (en) Laboratory safety alarm warning mechanism
CN210006175U (en) Smoke alarm
CN111429687B (en) Intelligent alarm for community security
CN216793050U (en) Fire acousto-optic alarm with built-in positioning structure for constructional engineering
CN219662753U (en) Fire control facility supervisory equipment
CN207764934U (en) A kind of intelligently encoding type fire acousto-optic alarm
CN210865018U (en) Novel NB independent type photoelectric smoke sensor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant