CN109581790A - A kind of projector of College English classroom easy access - Google Patents
A kind of projector of College English classroom easy access Download PDFInfo
- Publication number
- CN109581790A CN109581790A CN201910025854.8A CN201910025854A CN109581790A CN 109581790 A CN109581790 A CN 109581790A CN 201910025854 A CN201910025854 A CN 201910025854A CN 109581790 A CN109581790 A CN 109581790A
- Authority
- CN
- China
- Prior art keywords
- fixed
- seat shell
- projector
- axial
- hingedly
- 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
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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
- G03B21/16—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
- G03B21/14—Details
- G03B21/142—Adjusting of projection optics
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a kind of projectors of College English classroom easy access, it include connection component under seat shell, lower cover plate, projection lens angular adjustment component, detachable, upper fixed column, elastic anti-seismic arc spring plate and on connection component is auxiliarily fixed, radiating subassembly is provided in seat shell, the lower section of the seat shell is removably provided with the lower cover plate；Projector of the invention can very easily repair disassembly, it installs very quick and easy, and when in use, radiating subassembly good heat dissipation effect, heat dissipation is uniform, elastic anti-seismic arc spring plate can be very good to realize cushioning effect, avoid rigidly connected fatigue damage, the present invention is in the installation and removal of maintenance, axially position after need to only engaging, often it will not lead to the problem of loosening because of installation and removal, projection lens angular adjustment of the invention is very easy, it is accurate convenient for the position of projected picture, the present invention can greatly improve the safety and quality of instruction of English teaching.
Description
Technical field
The present invention relates to a kind of projectors of College English classroom easy access, belong to projector apparatus technical field.
Background technique
Currently, generally requiring using projector for the English teaching of university and completing college English curriculum
It practises and imparts knowledge to students.Projector can not only greatly simplify the convenience of English teaching, furthermore, it is possible to effectively improve English teaching matter
Amount.Current university's projector is generally fixed at the top of wall, and this fixed form is difficult to dismantle, once there is event in projector
Barrier, it will be difficult to repair, need to get off fixed expansion Bolt dismantling, and be installed again after repairing well and easily lead to expand
Bolt looseness causes to install stationarity variation, and if position is looked for be installed again, it is unsharp that it is easy to appear pictures
Problem causes to repair very complicated.Further, since the oscillation of projector cooling fan at runtime, this to use expansion bolt
Rigid connection easily lead to for a long time vibrate after there is wild effect, over time, be easy to appear failure.In addition, once
There is the problems such as small-sized earthquake, this rigid connection is extremely easy to appear accident.
The present invention in view of the above problems, providing a kind of projector of College English classroom easy access, tie up by raising projector
The convenience with installation is repaired, meanwhile, it is adjusted convenient for the projection angle of projector.
Summary of the invention
To achieve the above object, the invention provides the following technical scheme: a kind of projection of College English classroom easy access
Instrument, which is characterized in that it includes connection component, upper fixation under seat shell, lower cover plate, projection lens angular adjustment component, detachable
Column, elastic anti-seismic arc spring plate and on connection component is auxiliarily fixed, wherein radiating subassembly, the seat are provided in the seat shell
The lower section of shell is removably provided with the lower cover plate；
The upper end of the seat shell uses connection component under the detachable to be connected to fixed column lower end；
The upper end of fixed column is fixed on the elastic anti-seismic arc spring plate, the elastic anti-seismic arc spring plate
Upper surface is concave structure；
The upper end of the elastic anti-seismic arc spring plate is fixed in fixed wall top using three connecting pins, and the connecting pin is stretched
Enter to be fixed in the fixed wall top；
It is linked together between three connecting pins using connection component is auxiliarily fixed on described；
It is provided with the circuit control module of modularized design in the seat shell, is dissipated in the seat shell with the radiating subassembly
The opposite side in hot outlet side is provided with projection lens using projection lens angular adjustment component adjustable-angle.
Further, preferably, the projection lens angular adjustment component include hingedly enclosed against adjustable column, external envelope,
Interior envelope hingedly encloses, elastic head, adjusts screw hole and be provided in described in the seat shell ontology in adjusting nut, the seat shell
Envelope hingedly encloses, and has been wholely set external envelope on the projection lens and has hingedly enclosed, and the interior envelope, which hingedly encloses, protrudes into envelope in institute
State the hinged corral of external envelope at region in, the center that the interior envelope hingedly encloses is protruded into the end that the external envelope is hingedly enclosed,
The end that the external envelope is hingedly enclosed is provided with elastic head, and the elastic head is folded in the hinged circle center of interior envelope, the seat shell
It is located at the lower end that the interior envelope hingedly encloses on interior seat shell ontology and is provided with adjusting screw hole, the adjusting screw hole internal screw thread is adjusted
Against adjustable column described in being provided with, the end against adjustable column abuts against the projection lens side end face setting, described to support
External screw-thread connection by adjustable column is described against adjusting nut.
Further, preferably, the elastic anti-seismic arc spring plate is made of the thin steel spring plate of edge behind centre.
Further, preferably, under the detachable connection component include upper axially position disk, it is outer locking sleeve, lower solid
Reservation, lower axial positioning disk, axial connection ring one and axial connection ring two, the lower end of fixed column are provided with plug, institute
It states and is provided with axial link slot in the lower circumference of fixed column, the lower fixed seat is fixedly installed in the seat shell, it is described
The upper end of lower fixed seat is provided with socket, and the socket is plugged together with the plug and connect, and also sets on the circumference of the lower fixed seat
It is equipped with axial link slot, after the socket and the plug plug together, the axial direction connection ring one and axial connection ring two are detained respectively
If being connected on the axial link slot, so that the socket and plug is axially connected together, the axial direction connection ring one
Cross section with axial connection ring two is semi-circular structure, external after the axial direction connection ring one and the axial fastening of connection ring two
Coaxial sleeve is equipped with the outer locking sleeve, and the upper end of the outer locking sleeve is using the upper axial direction being located on fixed column
Positioning disk carries out top axial positioning and fixes, and the lower end of the outer locking sleeve is using the lower axle being located on the lower fixed seat
Lower end axially position is carried out to positioning disk to fix.
Further, preferably, the outer locking sleeve is fixed on the axial direction using multiple clamping screw positioning
In connection ring one or axial connection ring two.
Further, preferably, the inserting position of the socket and the plug is provided with positioning card, fixed column
Lower end is provided with blind hole, and the upper end of the lower fixed seat is also equipped with blind hole, and at least one centralized positioning column protrudes into described solid
In the blind hole of fixed column and the blind hole of lower fixed seat.
Further, preferably, be auxiliarily fixed on described connection component include connection ontology, clamp ring, locking intermediate plate and
Screw hole, the connection ontology there are three locking slot, are hingedly provided with along the setting of its center circumference array on the locking slot
Clamp ring, the connecting pin are locked in the locking slot by the clamp ring, the clamp ring using the locking intermediate plate into
Row locking setting, described lock are located in the fixed wall top on intermediate plate using the screw in the screw hole.
Further, preferably, the radiating subassembly includes cooling fan, thermal vias cover, heat-radiation branch pipe and heat dissipation master
Pipe, the cooling fan are arranged in the seat shell, and heat dissipation ventilation cover is provided at the air outlet of the cooling fan, described to dissipate
The inlet port of air-heater connects the heat dissipation supervisor, and the heat dissipation is responsible for upper array and is provided with multiple heat-radiation branch pipes, described to dissipate
Hot leg pipe is arranged towards the circuit control module.
Further, preferably, further including dust excluding plate, the heat-radiation branch pipe passes through the dust excluding plate and is arranged to be located in
On the dust excluding plate.
Compared with prior art, the beneficial effects of the present invention are:
Projector of the invention can very easily repair disassembly, and installation is very quick and easy, and is using
When, radiating subassembly good heat dissipation effect, uniformly, elastic anti-seismic arc spring plate can be very good to realize cushioning effect for heat dissipation, avoid
Rigidly connected fatigue damage, the present invention is in the installation and removal of maintenance, and axially position after need to only engaging will not be because of
Installation and removal often cause the problem of loosening, meanwhile, the angular adjustment of projection lens of the invention is very easy, just
Accurate in the position of projected picture, the present invention can greatly improve the safety and quality of instruction of English teaching.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of the projector of College English classroom easy access of the invention；
Fig. 2 be a kind of projector of College English classroom easy access of the invention on connecting component structure be auxiliarily fixed show
It is intended to；
Fig. 3 be a kind of projector of College English classroom easy access of the invention detachable under connecting component structure illustrate
Figure；
Fig. 4 is a kind of projection lens angular adjustment modular construction of the projector of College English classroom easy access of the invention
Schematic diagram；
Wherein, 1, seat shell, 2, lower cover plate, 3, circuit control module, 4, cooling fan, 5, thermal vias cover, 6, heat dissipation branch
Pipe, 7, dust excluding plate, 8, heat dissipation supervisor, 9, projection lens angular adjustment component, 10, projection lens, 11, against adjustable column, 12, just
Tear connection component under formula open, 13, upper fixed column, 14, elastic anti-seismic arc spring plate, 15, connecting pin, 16, on connection group is auxiliarily fixed
Part, 17, fixed wall top, 18, clamp ring, 19, locking intermediate plate, 20, screw hole, 21, centralized positioning column, 22, upper axially position disk,
23, outer locking sleeve, 24, clamping screw, 25, lower fixed seat, 26, lower axial positioning disk, 27, positioning card, 28, axial connection ring
One, 29, axial connection ring two, 30, external envelope hingedly enclose, 31, interior envelope hingedly enclose, 32, elastic head, 33, adjust screw hole, 34,
Against adjusting nut.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the present invention provides a kind of technical solution: a kind of projector of College English classroom easy access,
It is characterized in that, it include connection component 12 under seat shell 1, lower cover plate 2, projection lens angular adjustment component 9, detachable, it is upper solid
Fixed column 13, elastic anti-seismic arc spring plate 14 and on connection component is auxiliarily fixed, wherein be provided with radiating subassembly in the seat shell 1,
The lower section of the seat shell is removably provided with the lower cover plate 2；
The upper end of the seat shell 1 uses connection component 12 under the detachable to be connected to fixed 13 lower end of column；
The upper end of fixed column 13 is fixed on the elastic anti-seismic arc spring plate 14, the elastic anti-seismic arc spring
The upper surface of plate 14 is concave structure；
The upper end of the elastic anti-seismic arc spring plate 14 is fixed in fixed wall top 17 using three connecting pins, the connection
Pin 15, which protrudes into, to be fixed in the fixed wall top 17；
It is linked together between three connecting pins 15 using connection component 16 is auxiliarily fixed on described；
Be provided with the circuit control module 3 of modularized design in the seat shell 1, in the seat shell 1 with the radiating subassembly
The opposite side in heat dissipation outlet side projection lens 10 is provided with using projection lens angular adjustment component adjustable-angle.
In the present embodiment, as shown in figure 4, the projection lens angular adjustment component includes against adjustable column 11, outsourcing
Network hingedly encloses 30, interior envelope and hingedly encloses 31, elastic head 32, adjusts screw hole 33 and the seat in adjusting nut 34, the seat shell 1
It is provided with the interior envelope in shell ontology and hingedly encloses 31, external envelope has been wholely set on the projection lens 10 and has hingedly enclosed 30, institute
It states interior envelope and hingedly encloses 31 and protrude into envelope in the region that the external envelope hingedly encloses that 30 surround, the external envelope hingedly encloses 30
The center that the interior envelope hingedly encloses 31 is protruded into end, and the end that the external envelope hingedly encloses 30 is provided with elastic head 32, described
Elastic head 32 is folded in the hinged circle center of interior envelope, is located at the interior envelope on the seat shell ontology in the seat shell and hingedly encloses down
End, which is provided with, adjusts screw hole 33,33 internal screw thread of adjustings screw hole adjusting be provided with described in against adjustable column 11, it is described against tune
The end of segmented column 11 abuts against 10 side end face of projection lens and is arranged, described in the external screw-thread connection against adjustable column 11
Against adjusting nut 34.
In the present embodiment, the elastic anti-seismic arc spring plate is made of the thin steel spring plate of edge behind centre.
As shown in figure 3, connection component includes upper axially position disk 22, outer locking sleeve 23, lower fixation under the detachable
Seat 25, lower axial positioning disk 26, axial connection ring 1 and axial connection ring 2 29, the lower end of fixed column 13 is provided with
Plug is provided with axial link slot in the lower circumference of fixed column 13, is fixedly installed in the seat shell described lower solid
Reservation 25, the upper end of the lower fixed seat 25 are provided with socket, and the socket is plugged together with the plug and connect, the lower fixed seat
Circumference on be also equipped with axial link slot, after the socket and the plug plug together, the axial direction connection ring 1 and axial
Connection ring 2 29 is detained to set respectively and is connected on the axial link slot, so that the socket and plug is axially connected together,
The cross section of the axial direction connection ring 1 and axial connection ring 2 29 is semi-circular structure, the axial direction connection ring one and axis
Outer, coaxial is arranged with the outer locking sleeve 23 after fastening to connection ring two, and the upper end of the outer locking sleeve 23 is using positioning
Upper axially position disk 22 on fixed column carries out top axial positioning and fixes, and the lower end of the outer locking sleeve uses
The lower axial positioning disk 26 being located on the lower fixed seat carries out lower end axially position and fixes.
Wherein, as preferred embodiment, the outer locking sleeve is fixed on using multiple positioning of clamping screw 24
In the axial direction connection ring one or axial connection ring two.The inserting position of the socket and the plug is provided with positioning card 27, institute
The lower end for stating fixed column is provided with blind hole, and the upper end of the lower fixed seat is also equipped with blind hole, at least one centralized positioning column
21 protrude into the blind hole of fixed column and the blind hole of lower fixed seat.
As shown in Fig. 2, it includes connection ontology, clamp ring 18, locking intermediate plate 19 and spiral shell that connection component is auxiliarily fixed on described
Nail hole 20, the connection ontology there are three locking slot, are hingedly provided with along the setting of its center circumference array on the locking slot
Clamp ring 18, the connecting pin are locked in the locking slot by the clamp ring, and the clamp ring 18 is pressed from both sides using the locking
Piece 19 carries out locking setting, uses the screw in the screw hole 20 to be located in the fixed wall top on the locking intermediate plate 19
On.
As shown in Figure 1, the radiating subassembly includes that cooling fan 4, thermal vias cover 5, heat-radiation branch pipe 6 and heat dissipation are responsible for 8,
The cooling fan 4 is arranged in the seat shell, and heat dissipation ventilation cover 5 is provided at the air outlet of the cooling fan 4, described to dissipate
The inlet port of air-heater connects the heat dissipation supervisor 8, and array is provided with multiple heat-radiation branch pipes 6 on the heat dissipation supervisor 8, described
Heat-radiation branch pipe 6 is arranged towards the circuit control module 3.
It further include dust excluding plate 7 to guarantee dust-proof effect, the heat-radiation branch pipe 6 passes through the dust excluding plate 7 and is arranged so as to fixed
Position is on the dust excluding plate.
Projector of the invention can very easily repair disassembly, and installation is very quick and easy, and is using
When, radiating subassembly good heat dissipation effect, uniformly, elastic anti-seismic arc spring plate can be very good to realize cushioning effect for heat dissipation, avoid
Rigidly connected fatigue damage, the present invention is in the installation and removal of maintenance, and axially position after need to only engaging will not be because of
Installation and removal often cause the problem of loosening, meanwhile, the angular adjustment of projection lens of the invention is very easy, just
Accurate in the position of projected picture, the present invention can greatly improve the safety and quality of instruction of English teaching.
It 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 variations, modification, replacement can be carried out to these embodiments 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 (9)
1. a kind of projector of College English classroom easy access, which is characterized in that it includes seat shell, lower cover plate, projection lens
Connection component under angular adjustment component, detachable, upper fixed column, elastic anti-seismic arc spring plate and on connection component is auxiliarily fixed,
Wherein, radiating subassembly is provided in the seat shell, the lower section of the seat shell is removably provided with the lower cover plate；
The upper end of the seat shell uses connection component under the detachable to be connected to fixed column lower end；
The upper end of fixed column is fixed on the elastic anti-seismic arc spring plate, the upper end of the elastic anti-seismic arc spring plate
Face is concave structure；
The upper end of the elastic anti-seismic arc spring plate is fixed in fixed wall top using three connecting pins, and the connecting pin protrudes into solid
It is scheduled in the fixed wall top；
It is linked together between three connecting pins using connection component is auxiliarily fixed on described；
It is provided with the circuit control module of modularized design in the seat shell, goes out in the seat shell with the heat dissipation of the radiating subassembly
The opposite side in gas end is provided with projection lens using projection lens angular adjustment component adjustable-angle.
2. a kind of projector of College English classroom easy access according to claim 1, it is characterised in that: the projection
Angle lens adjust component include hingedly enclose against adjustable column, external envelope, interior envelope hingedly encloses, elastic head, adjusting and are supported screw hole
By adjusting nut, it is provided with the interior envelope in the seat shell ontology in the seat shell and hingedly encloses, is integrally set on the projection lens
External envelope is equipped with hingedly to enclose, the interior envelope hingedly enclose protrude into envelope the hinged corral of the external envelope at region in, it is described
The center that the interior envelope hingedly encloses is protruded into the end that external envelope is hingedly enclosed, and the end setting that the external envelope is hingedly enclosed is flexible
Head, the elastic head are folded in the hinged circle center of interior envelope, and it is hinged to be located at the interior envelope on the seat shell ontology in the seat shell
The lower end of circle is provided with adjusting screw hole, the adjusting screw hole internal screw thread adjusting be provided with it is described against adjustable column, it is described against tune
The end of segmented column abuts against the projection lens side end face setting, and the external screw-thread connection against adjustable column is described against tune
Save nut.
3. a kind of projector of College English classroom easy access according to claim 2, it is characterised in that: the elasticity
Antidetonation arc spring plate is made of the thin steel spring plate of edge behind centre.
4. a kind of projector of College English classroom easy access according to claim 3, it is characterised in that: described just to tear open
Connection component includes upper axially position disk, outer locking sleeve, lower fixed seat, lower axial positioning disk, one and of axial connection ring under formula
Axial connection ring two, the lower end of fixed column are provided with plug, are provided with axial direction in the lower circumference of fixed column
Link slot is fixedly installed the lower fixed seat in the seat shell, and the upper end of the lower fixed seat is provided with socket, the socket
It plugs together and connect with the plug, axial link slot, the socket and the plug are also equipped on the circumference of the lower fixed seat
After plugging together, the axial direction connection ring one and axial connection ring two detains to set respectively and be connected on the axial direction link slot, so as to by institute
It states socket and plug to be axially connected together, the cross section of the axial direction connection ring one and axial connection ring two is semi-circular knot
Outer, coaxial is arranged with the outer locking sleeve, the external lock after structure, the axial direction connection ring one and axial connection ring two fasten
The upper end of fixed cylinder carries out top axial positioning using the upper axially position disk being located on fixed column and fixes, described outer
The lower end of locking sleeve carries out lower end axially position using the lower axial positioning disk being located on the lower fixed seat and fixes.
5. a kind of projector of College English classroom easy access according to claim 4, it is characterised in that: the external lock
Fixed cylinder is fixed in the axial connection ring one or axial connection ring two using multiple clamping screw positioning.
6. a kind of projector of College English classroom easy access according to claim 5, it is characterised in that: the socket
The inserting position of the plug is provided with positioning card, the lower end of fixed column is provided with blind hole, the lower fixed seat it is upper
End is also equipped with blind hole, and at least one centralized positioning column protrudes into the blind hole of fixed column and the blind hole of lower fixed seat.
7. a kind of projector of College English classroom easy access according to claim 3, it is characterised in that: described auxiliary
Helping and being fixedly connected with component includes connection ontology, clamp ring, locking intermediate plate and screw hole, and the connection ontology is along its center circumferential
Array setting is hingedly provided with clamp ring on the locking slot, the connecting pin is locked by the clamp ring there are three locking slot
In the locking slot, the clamp ring carries out locking setting using the locking intermediate plate, uses on the locking intermediate plate described
Screw in screw hole is located in the fixed wall top.
8. a kind of projector of College English classroom easy access according to claim 1, it is characterised in that: the heat dissipation
Component includes that cooling fan, thermal vias cover, heat-radiation branch pipe and heat dissipation supervisor, the cooling fan are arranged in the seat shell,
Heat dissipation ventilation cover is provided at the air outlet of the cooling fan, the inlet port of the cooling fan connects the heat dissipation master
Pipe, the heat dissipation are responsible for upper array and are provided with multiple heat-radiation branch pipes, and the heat-radiation branch pipe is arranged towards the circuit control module.
9. a kind of projector of College English classroom easy access according to claim 8, it is characterised in that: further include preventing
Dirt plate, the heat-radiation branch pipe pass through the dust excluding plate and are arranged to be located on the dust excluding plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025854.8A CN109581790B (en) | 2019-01-09 | 2019-01-09 | Projecting apparatus of college english classroom easy access |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025854.8A CN109581790B (en) | 2019-01-09 | 2019-01-09 | Projecting apparatus of college english classroom easy access |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109581790A true CN109581790A (en) | 2019-04-05 |
| CN109581790B CN109581790B (en) | 2020-10-30 |
Family
ID=65916221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910025854.8A Active CN109581790B (en) | 2019-01-09 | 2019-01-09 | Projecting apparatus of college english classroom easy access |
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| Country | Link |
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| CN (1) | CN109581790B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000171897A (en) * | 1998-12-04 | 2000-06-23 | Toshiba Corp | Liquid crystal projector |
| JP2007155975A (en) * | 2005-12-02 | 2007-06-21 | Matsushita Electric Ind Co Ltd | Rear projection apparatus |
| CN205588920U (en) * | 2016-04-29 | 2016-09-21 | 王丽萍 | Building engineering car supports chassis |
| CN106019786A (en) * | 2016-08-08 | 2016-10-12 | 成都恒胜达科技有限公司 | Projector shell with dust prevention and heat dissipation functions |
| CN205859545U (en) * | 2016-07-31 | 2017-01-04 | 唐山师范学院 | Scialyscope protection hanging is cased |
| CN106383398A (en) * | 2015-08-04 | 2017-02-08 | 江苏宜清光电科技有限公司 | Lens capable of carrying out 360 degree projection |
| CN206112446U (en) * | 2016-10-25 | 2017-04-19 | 胡欣 | Dual -purpose type construction machinery auxiliary stay vibration damper |
| CN106896630A (en) * | 2017-04-25 | 2017-06-27 | 安徽庆睿实业有限责任公司 | A kind of intelligent multimedia projecting apparatus |
| CN208270914U (en) * | 2018-06-22 | 2018-12-21 | 马芝芳 | A kind of projector |
-
2019
- 2019-01-09 CN CN201910025854.8A patent/CN109581790B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000171897A (en) * | 1998-12-04 | 2000-06-23 | Toshiba Corp | Liquid crystal projector |
| JP2007155975A (en) * | 2005-12-02 | 2007-06-21 | Matsushita Electric Ind Co Ltd | Rear projection apparatus |
| CN106383398A (en) * | 2015-08-04 | 2017-02-08 | 江苏宜清光电科技有限公司 | Lens capable of carrying out 360 degree projection |
| CN205588920U (en) * | 2016-04-29 | 2016-09-21 | 王丽萍 | Building engineering car supports chassis |
| CN205859545U (en) * | 2016-07-31 | 2017-01-04 | 唐山师范学院 | Scialyscope protection hanging is cased |
| CN106019786A (en) * | 2016-08-08 | 2016-10-12 | 成都恒胜达科技有限公司 | Projector shell with dust prevention and heat dissipation functions |
| CN206112446U (en) * | 2016-10-25 | 2017-04-19 | 胡欣 | Dual -purpose type construction machinery auxiliary stay vibration damper |
| CN106896630A (en) * | 2017-04-25 | 2017-06-27 | 安徽庆睿实业有限责任公司 | A kind of intelligent multimedia projecting apparatus |
| CN208270914U (en) * | 2018-06-22 | 2018-12-21 | 马芝芳 | A kind of projector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109581790B (en) | 2020-10-30 |
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