CN107894687A - A kind of school projecting apparatus protection device - Google Patents
A kind of school projecting apparatus protection device Download PDFInfo
- Publication number
- CN107894687A CN107894687A CN201711366998.7A CN201711366998A CN107894687A CN 107894687 A CN107894687 A CN 107894687A CN 201711366998 A CN201711366998 A CN 201711366998A CN 107894687 A CN107894687 A CN 107894687A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- projecting apparatus
- casing
- bar
- electric expansion
- 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.)
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of school projecting apparatus protection device; pass through being used cooperatively for casing, opening, chute, slide bar, sliding sleeve, connecting rod, movable sleeve, fix bar, first rotating shaft, the second fixed block, projecting apparatus, motion bar, sliding block and the first electric expansion bar; solve existing school does not have protection device with projecting apparatus; without using when, the problem of activity of student may cause damage to projecting apparatus；There is provided the setting of first rotating shaft, serves the effect for being flexibly connected projecting apparatus；There is provided the second electric expansion bar and the 3rd electric expansion bar, realizes the regulation of various dimensions；There is provided a number finish detection sensor, No. two finish check devices, dust arrester, air pumps, cpu controller driving dust arrester and air pump carry out automatic dust removing；There is provided temperature-humidity sensor, effectively monitors projecting apparatus environment.
Description
Technical field
The present invention relates to teaching equipment technical field, specially a kind of school's projecting apparatus protection device.
Background technology
Senior middle school is the abbreviation of senior middle school, and middle school of China is divided into junior high school and senior middle school, and wherein senior middle school belongs to advanced
The category of secondary education, senior middle school are educational institutions more high after China's nine-year compulsory education terminates, Shang Cheng junior middle schools, under open
University, to make within generally 3 years, Chinese senior middle school education refers to the senior middle-school education after junior middle school, including：Regular senior secondary school, Cheng Rengao
In, vocational high school, technical secondary school, intermediate technical school etc., belong to the category of senior middle-school education.
High school at school when need to use projecting apparatus, but existing school does not protect dress with projecting apparatus
Put, without using when, the activity of student may cause to damage to projecting apparatus, so as to shorten the service life of projecting apparatus,
Reduce the practicality of school's projecting apparatus.
Projecting apparatus protection device can not adjust height of projector, angle at present, lack actively to projecting apparatus lens cleaning
Device.
In addition, current projecting apparatus protection device can not be monitored to the working environment of projecting apparatus, while can not
The dust in protection device is actively removed, greatly reduces the projecting apparatus life-span.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of school projecting apparatus protection device, possess to projecting apparatus
The advantages that playing a protective role, solve existing school does not have protection device with projecting apparatus, without using when, the work of student
Dynamic the problem of damage may be caused to projecting apparatus.
To realize the above-mentioned purpose to be played a protective role to projecting apparatus, the present invention provides following technical scheme：A kind of school
With projecting apparatus protection device, including casing, the first fixed block is fixedly connected with the top of the casing, described top, which is fixed, to be connected
The 3rd electric expansion bar is connected to, the top of the 3rd electric expansion bar is fixedly connected with wall；The bottom of the casing opens up
There is opening, chute is offered on rear side of the cabinet wall, the both sides of the cabinets cavity are vertically fixedly connected with slide bar, institute
The surface for stating slide bar is arranged with sliding sleeve, and two sliding sleeve sides close to each other have been fixedly connected with connecting rod, the connecting rod
One end away from sliding sleeve is fixedly connected with movable sleeve, and the inner chamber of the movable sleeve slidably connects fix bar, the fix bar
With being fixedly connected at the top of cabinets cavity, the bottom of the movable sleeve is connected with the second fixation by first rotating shaft at top
Block, the bottom of second fixed block are fixedly connected with projecting apparatus, and the projecting apparatus is located at the top of opening, the movable sleeve back of the body
Motion bar is fixedly connected with the top of surface, the back surface of the motion bar is fixedly connected with the cunning used when coordinating with chute
Block, the bottom of the motion bar are fixedly connected with the first electric expansion bar, in the bottom and casing of first electric expansion bar
The bottom of chamber is fixedly connected, and the bottom that the motion bar is located on front side of the first electric expansion bar is fixedly connected with the second electric expansion
Bar, the bottom of second electric expansion bar are connected with the 3rd fixed block, the bottom of the 3rd fixed block and projecting apparatus
Top be fixedly connected；
The rear end of the cabinets cavity bottom is fixedly connected with cpu controller, and the front surface of the cpu controller is fixedly connected with
Radio communication device, the front end of the cabinet wall are fixedly connected with lens protecting apparatus, the lens protecting apparatus inwall
Front end is fixedly connected with No.1 finish detection sensor, and blowhole is offered at the top of the lens protecting apparatus, described to blow
Tracheae is communicated with the top of air holes, the one end of the tracheae away from lens protecting apparatus is through to the front end of casing and is fixedly connected
There is air pump, the back surface of the air pump is fixedly connected with the front surface of casing, and the front end at the top of the cabinets cavity is fixedly connected
There is dust arrester, the back surface of the dust arrester is fixedly connected with No. two finish check devices, the cabinets cavity top
Rear end be respectively fixedly connected with humidity sensor and temperature sensor, the bottom of the cabinets cavity is fixedly connected with alarm
Device, first electric expansion bar, the second electric expansion bar, the 3rd electric expansion bar, air pump, dust arrester and alarm it is defeated
Enter end to electrically connect with the output end of cpu controller, it is the No.1 finish detection sensor, No. two finish check devices, wet
Degree sensor, temperature sensor and the output end of radio communication device electrically connect with the input of cpu controller, the channel radio
The input of T unit is electrically connected with hand-held remote control.
Preferably, the surface of the slide bar is arranged with the first spacing pad, and the first spacing pad is positioned at the bottom of sliding sleeve.
Preferably, be fixedly connected with the second spacing pad at the top of the chute inner chamber, the bottom of the second spacing pad with
The top contact of sliding block.
Preferably, the quantity of the connecting rod is two, and two connecting rods are centrosymmetric on movable sleeve.
Preferably, the bottom of second electric expansion bar is connected by the activity of the inner chamber of the second rotating shaft and the 3rd fixed block
Connect, the top of the fix bar is by fixture with being fixedly connected at the top of cabinets cavity.
Compared with prior art, the invention provides a kind of school projecting apparatus protection device, possesses following beneficial effect：
1st, school projecting apparatus protection device, passes through casing, opening, chute, slide bar, sliding sleeve, connecting rod, movable sleeve, fixation
Bar, first rotating shaft, the second fixed block, projecting apparatus, motion bar, sliding block and the first electric expansion bar are used cooperatively, and are solved existing
There is school there is no protection device with projecting apparatus, without using when, student activity damage may be caused to ask projecting apparatus
Topic, possesses the advantages that being played a protective role to projecting apparatus, extends the service life of projecting apparatus, improve school's projecting apparatus
Practicality；
2nd, school projecting apparatus protection device, by the setting of the first spacing pad, the effect spacing to sliding sleeve is served, is avoided
Moved down because sliding sleeve is excessive, the phenomenon to be come off from fix bar occurs in movable sleeve, increases the stability of movable sleeve, makes
The stablizing effect of movable sleeve is more preferable, by the setting of the second spacing pad, avoids between sliding block and chute because hard collision occurs
The phenomenon of damage parts, the stability of sliding block is increased, extend the service life of sliding block, by the setting of first rotating shaft, risen
The effect for being flexibly connected projecting apparatus has been arrived, by the setting of the second rotating shaft, has served the effect for being flexibly connected the 3rd fixed block；
3rd, by the setting of first rotating shaft, the effect for being flexibly connected projecting apparatus is served；
4th, there is provided the 3rd electric expansion bar, by hand-held remote control and radio communication device cpu controller can be allowed to drive the 3rd
Electric expansion bar moves up and down, with regulating height of box body；There is provided the second electric expansion bar and the 3rd fixed block, opens the second electricity
Dynamic expansion link drives the 3rd fixed block to move up, you can adjusts the angle of projecting apparatus, realizes the regulation of various dimensions；
5th, it can allow cpu controller driving gas pump startup that camera lens is blowed by hand-held remote control and radio communication device, help
Help cleaning camera lens；
6th, there is provided No.1 finish detection sensor, when No.1 finish detection sensor detects that camera lens is unclean, CPU
Controller drives alarm equipment alarm, by keeping finish by it to lens cleaning or being filled by hand-held remote control and radio communication
Putting can allow cpu controller control alarm to eliminate alarm；
7th, there is provided dust arrester and No. two finish check devices to be connected with cpu controller, when No. two finish detections pass
When sensor detects that projecting apparatus is unclean in casing, cpu controller driving dust arrester carries out automatic dust removing；
8th, there is provided humidity sensor, temperature sensor, humidity sensor to be connected with cpu controller, when roof leak or case
When internal air humidity value reaches the preset value that influence projecting apparatus uses, cpu controller driving alarm equipment alarm, temperature sensor
It is connected with cpu controller, when projecting apparatus usage time is long causes heating to reach the preset value that influence projecting apparatus uses, CPU
Controller drives alarm equipment alarm.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the left view sectional view of the present invention.
Fig. 3 is A of the present invention partial enlarged drawing.
Fig. 4 is the sectional view of partial structurtes of the present invention.
Fig. 5 is present system schematic diagram.
In figure：1 casing, 2 first fixed blocks, 3 walls, 4 openings, 5 chutes, 6 slide bars, 7 sliding sleeves, 8 connecting rods, 9 movable sleeves,
10 fix bars, 11 first rotating shafts, 12 second fixed blocks, 13 projecting apparatus, 14 motion bars, 15 sliding blocks, 16 first electric expansion bars, 17
Second electric expansion bar, 18 the 3rd fixed blocks, 19 first spacing pads, 20 second spacing pads, 21 the 3rd electric expansion bars, 22 CPU
Controller, 23 radio communication devices, 24 lens protecting apparatus, 25 No.1 finish detection sensors, 26 blowholes, 27 tracheaes,
28 air pumps, 29 dust arresters, 30 No. two finish check devices, 31 humidity sensors, 32 temperature sensors, 33 alarms, 34
Hand-held remote control.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-5, a kind of school projecting apparatus protection device, including casing 1, the top of casing 1 is referred to be fixedly connected with
The top of first fixed block 2,2 is fixedly connected with the 3rd electric expansion bar 21, and the top of the 3rd electric expansion bar 21 is fixedly connected
There is wall 3；The bottom of casing 1 offers opening 4, and chute 5 is offered on rear side of the inwall of casing 1, and the both sides of the inner chamber of casing 1 are perpendicular
To slide bar 6 is fixedly connected with, the surface of slide bar 6 is arranged with sliding sleeve 7, and the surface of slide bar 6 is arranged with the first spacing pad 19, the first limit
Position pad 19 is located at the bottom of sliding sleeve 7, by the setting of the first spacing pad 19, serves the effect spacing to sliding sleeve 7, avoid because
Sliding sleeve 7 is excessive to be moved down, and the phenomenon to be come off from fix bar 10 occurs in movable sleeve 9, increases the stability of movable sleeve 9,
Make the stablizing effect of movable sleeve 9 more preferable, and two sides close to each other of sliding sleeve 7 have been fixedly connected with connecting rod 8, connecting rod 8
Quantity be two, and two connecting rods 8 are centrosymmetric on movable sleeve 9, and the one end of connecting rod 8 away from sliding sleeve 7, which is fixed, to be connected
Movable sleeve 9 is connected to, the inner chamber of movable sleeve 9 slidably connects fix bar 10, and the top at the top and the inner chamber of casing 1 of fix bar 10 is consolidated
Fixed connection, by fixture with being fixedly connected at the top of the inner chamber of casing 1, the bottom of movable sleeve 9 passes through the at the top of fix bar 10
One rotating shaft 11 is connected with the second fixed block 12, by the setting of first rotating shaft 11, serves and is flexibly connected projecting apparatus 13
Effect, the bottom of the second fixed block 12 are fixedly connected with projecting apparatus 13, and projecting apparatus 13 is located at the top of opening 4, and movable sleeve 9 carries on the back table
Motion bar 14 is fixedly connected with the top of face, the back surface of motion bar 14 is fixedly connected with the sliding block used when coordinating with chute 5
15, the second spacing pad 20 is fixedly connected with the top of the inner chamber of chute 5, and the bottom and the top of sliding block 15 of the second spacing pad 20 connect
Touch, by the setting of the second spacing pad 20, avoid between sliding block 15 and chute 5 because showing for damage parts occurs in hard collision
As increasing the stability of sliding block 15, extending the service life of sliding block 15, the bottom of motion bar 14 is fixedly connected with the first electricity
Dynamic expansion link 16, the bottom of the first electric expansion bar 16 are fixedly connected with the bottom of the inner chamber of casing 1, and motion bar 14 is positioned at the first electricity
The bottom of the dynamic front side of expansion link 16 is fixedly connected with the second electric expansion bar 17, and the bottom of the second electric expansion bar 17 is flexibly connected
There is the 3rd fixed block 18, the bottom of the second electric expansion bar 17 is connected by the activity of the inner chamber of the second rotating shaft and the 3rd fixed block 18
Connect, by the setting of the second rotating shaft, serve the effect for being flexibly connected the 3rd fixed block 18, the bottom of the 3rd fixed block 18 and throwing
The top of shadow instrument 13 is fixedly connected；
The rear end of the intracavity bottom of casing 1 is fixedly connected with cpu controller 22, and the front surface of cpu controller 22, which is fixedly connected, to be whether there is
Line communicator 23, the front end of the inwall of casing 1 are fixedly connected with lens protecting apparatus 24, the front end of the inwall of lens protecting apparatus 24
No.1 finish detection sensor 25 is fixedly connected with, the top of lens protecting apparatus 24 offers blowhole 26, blowhole 26
Top be communicated with tracheae 27, the one end of tracheae 27 away from lens protecting apparatus 24 is through to the front end of casing 1 and is fixedly connected
There is air pump 28, the back surface of air pump 28 is fixedly connected with the front surface of casing 1, and the front end of the inner cavity top of casing 1 is fixedly connected with
Dust arrester 29, the back surface of dust arrester 29 are fixedly connected with No. two finish check devices 30, after the inner cavity top of casing 1
End has been respectively fixedly connected with humidity sensor 31 and temperature sensor 32, and the bottom of the inner chamber of casing 1 is fixedly connected with alarm 33,
First electric expansion bar 16, the second electric expansion bar 17, the 3rd electric expansion bar 21, air pump 28, dust arrester 29 and alarm
33 input electrically connects with the output end of cpu controller 22,25, No. two finish inspection dresses of No.1 finish detection sensor
Put the output end of 30, humidity sensor 31, temperature sensor 32 and radio communication device 23 and the input electricity of cpu controller 22
Connection, the input of radio communication device 23 are electrically connected with hand-held remote control 34, and the 3rd electric expansion bar 21 connects with cpu controller 22
Connect, with radio communication device 23 cpu controller 22 can be allowed to drive in the 3rd electric expansion bar 21 by hand-held remote control 34 and moved down
It is dynamic, with the height of regulating box 1, by hand-held remote control 34 and radio communication device 23 cpu controller 22 can be allowed to drive air pump 28
Camera lens is blowed for startup, and camera lens is cleaned in help, when No.1 finish detection sensor detection 25 is unclean to camera lens,
Cpu controller 22 drive alarm 33 alarm, by lens cleaning by its keep finish or by hand-held remote control 34 with
Radio communication device 23 can allow cpu controller 22 to control alarm 33 to eliminate alarm, dust arrester 29 and No. two finish inspections
Look into device 30 to be connected with cpu controller 22, when No. two finish detection sensors 30 detect that projecting apparatus 13 is unclear in casing 1
When clean, cpu controller 22 drives dust arrester 29 to carry out automatic dust removing, and humidity sensor 31 is connected with cpu controller 22, works as room
When air humidity value reaches the preset value that influence projecting apparatus 13 uses in top leak or casing 1, the driving alarm of cpu controller 22
Device 33 is alarmed, and temperature sensor 32 is connected with cpu controller 22, causes heating to reach influence when the usage time of projecting apparatus 13 is long
During the preset value that projecting apparatus 13 uses, cpu controller 22 drives alarm 33 to alarm.
When in use, user drives motion bar 14 to move down by opening the first electric expansion bar 16, motion bar 14
The electric expansion bar 17 of movable sleeve 9 and second is driven to move down, movable sleeve 9 drives connecting rod 8 and first rotating shaft 11 to move down,
Second electric expansion bar 17 drives the 3rd fixed block 18 to move down, and first rotating shaft 11 drives the second fixed block 12 to move down,
Second fixed block 12 and the 3rd fixed block 18 drive projecting apparatus 13 to move down simultaneously, when projecting apparatus 13 is moved to the bottom of casing 1
During portion, open the second electric expansion bar 17 and drive the 3rd fixed block 18 to move up, you can the angle of adjustment projecting apparatus 13, work as throwing
Projecting apparatus 13 when not in use, can be conversely accommodated in casing 1 by shadow instrument 13, and dress is protected with projecting apparatus so as to reach the school
Put the effect protected to projecting apparatus 13.
In summary, school projecting apparatus protection device, casing 1, opening 4, chute 5, slide bar 6, sliding sleeve 7, company are passed through
Extension bar 8, movable sleeve 9, fix bar 10, first rotating shaft 11, the second fixed block 12, projecting apparatus 13, motion bar 14, sliding block 15 and first
Electric expansion bar 16 is used cooperatively, and solve existing school does not have protection device with projecting apparatus, without using when, student
Activity projecting apparatus may be caused damage the problem of.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of school projecting apparatus protection device, including casing（1）, it is characterised in that：The casing（1）Top fix connect
It is connected to the first fixed block（2）, it is described（2）Top be fixedly connected with the 3rd electric expansion bar（21）, the 3rd electric expansion
Bar（21）Top be fixedly connected with wall（3）；
The casing（1）Bottom offer opening（4）, the casing（1）Chute is offered on rear side of inwall（5）, the case
Body（1）The both sides of inner chamber are vertically fixedly connected with slide bar（6）, the slide bar（6）Surface be arranged with sliding sleeve（7）, and two
Sliding sleeve（7）Side close to each other has been fixedly connected with connecting rod（8）, the connecting rod（8）Away from sliding sleeve（7）One end fix
It is connected with movable sleeve（9）, the movable sleeve（9）Inner chamber slidably connect fix bar（10）, the fix bar（10）Top
With casing（1）It is fixedly connected at the top of inner chamber, the movable sleeve（9）Bottom pass through first rotating shaft（11）It is connected with second
Fixed block（12）, second fixed block（12）Bottom be fixedly connected with projecting apparatus（13）, the projecting apparatus（13）Positioned at opening
Mouthful（4）Top, the movable sleeve（9）Motion bar is fixedly connected with the top of back surface（14）, the motion bar（14）The back of the body
Surface is fixedly connected with and chute（5）The sliding block used during cooperation（15）, the motion bar（14）Bottom be fixedly connected with
One electric expansion bar（16）, first electric expansion bar（16）Bottom and casing（1）The bottom of inner chamber is fixedly connected, described
Motion bar（14）Positioned at the first electric expansion bar（16）The bottom of front side is fixedly connected with the second electric expansion bar（17）, described
Two electric expansion bars（17）Bottom be connected with the 3rd fixed block（18）, the 3rd fixed block（18）Bottom and projection
Instrument（13）Top be fixedly connected；
The casing（1）The rear end of intracavity bottom is fixedly connected with cpu controller（22）, the cpu controller（22）Positive table
Face is fixedly connected with radio communication device（23）, the casing（1）The front end of inwall is fixedly connected with lens protecting apparatus（24）,
The lens protecting apparatus（24）The front end of inwall is fixedly connected with No.1 finish detection sensor（25）, the lens protection
Device（24）Top offer blowhole（26）, the blowhole（26）Top be communicated with tracheae（27）, the tracheae
（27）Away from lens protecting apparatus（24）One end be through to casing（1）Front end and be fixedly connected with air pump（28）, the gas
Pump（28）Back surface and casing（1）Front surface be fixedly connected, the casing（1）The front end of inner cavity top, which is fixedly connected with, removes
Dirt device（29）, the dust arrester（29）Back surface be fixedly connected with No. two finish check devices（30）, the casing
（1）The rear end of inner cavity top has been respectively fixedly connected with humidity sensor（31）And temperature sensor（32）, the casing（1）Inner chamber
Bottom be fixedly connected with alarm（33）, first electric expansion bar（16）, the second electric expansion bar（17）, it is the 3rd electronic
Expansion link（21）, air pump（28）, dust arrester（29）And alarm（33）Input and cpu controller（22）Output end electricity
Connection, the No.1 finish detection sensor（25）, No. two finish check devices（30）, humidity sensor（31）, temperature
Sensor（32）And radio communication device（23）Output end and cpu controller（22）Input electrical connection, the channel radio
T unit（23）Input be electrically connected with hand-held remote control（34）.
A kind of 2. school projecting apparatus protection device according to claim 1, it is characterised in that：The slide bar（6）Table
Surface cover is provided with the first spacing pad（19）, the first spacing pad（19）Positioned at sliding sleeve（7）Bottom.
A kind of 3. school projecting apparatus protection device according to claim 1, it is characterised in that：The chute（5）Inner chamber
Top be fixedly connected with the second spacing pad（20）, the second spacing pad（20）Bottom and sliding block（15）Top contact.
A kind of 4. school projecting apparatus protection device according to claim 1, it is characterised in that：The connecting rod（8）'s
Quantity is two, and two connecting rods（8）On movable sleeve（9）It is centrosymmetric.
A kind of 5. school projecting apparatus protection device according to claim 1, it is characterised in that：Second electric expansion
Bar（17）Bottom pass through the second rotating shaft and the 3rd fixed block（18）Inner chamber be flexibly connected, the fix bar（10）Top lead to
Cross fixture and casing（1）It is fixedly connected at the top of inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366998.7A CN107894687A (en) | 2017-12-18 | 2017-12-18 | A kind of school projecting apparatus protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711366998.7A CN107894687A (en) | 2017-12-18 | 2017-12-18 | A kind of school projecting apparatus protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107894687A true CN107894687A (en) | 2018-04-10 |
Family
ID=61806673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711366998.7A Withdrawn CN107894687A (en) | 2017-12-18 | 2017-12-18 | A kind of school projecting apparatus protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107894687A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327696A (en) * | 2018-10-26 | 2019-02-12 | 陈小辉 | A kind of projector intelligent monitoring system and application method |
| CN110928115A (en) * | 2019-12-16 | 2020-03-27 | 赵霄阳 | Commercial long-range projection arrangement |
| CN111412836A (en) * | 2020-04-22 | 2020-07-14 | 哈尔滨学院 | Measuring device for visual transmission design convenient to carry |
| CN112305850A (en) * | 2019-08-01 | 2021-02-02 | 深圳市安信祥和科技有限公司 | Living room AI projection lamp and projection method thereof |
| CN113503440A (en) * | 2021-07-21 | 2021-10-15 | 许昌学院 | Intelligent home projector based on hand motion recognition |
-
2017
- 2017-12-18 CN CN201711366998.7A patent/CN107894687A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109327696A (en) * | 2018-10-26 | 2019-02-12 | 陈小辉 | A kind of projector intelligent monitoring system and application method |
| CN112305850A (en) * | 2019-08-01 | 2021-02-02 | 深圳市安信祥和科技有限公司 | Living room AI projection lamp and projection method thereof |
| CN110928115A (en) * | 2019-12-16 | 2020-03-27 | 赵霄阳 | Commercial long-range projection arrangement |
| CN111412836A (en) * | 2020-04-22 | 2020-07-14 | 哈尔滨学院 | Measuring device for visual transmission design convenient to carry |
| CN111412836B (en) * | 2020-04-22 | 2021-07-30 | 哈尔滨学院 | Measuring device for visual transmission design convenient to carry |
| CN113503440A (en) * | 2021-07-21 | 2021-10-15 | 许昌学院 | Intelligent home projector based on hand motion recognition |
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