CN108172035B - Portable projection screen is used in computer teaching - Google Patents
Portable projection screen is used in computer teaching Download PDFInfo
- Publication number
- CN108172035B CN108172035B CN201810106841.9A CN201810106841A CN108172035B CN 108172035 B CN108172035 B CN 108172035B CN 201810106841 A CN201810106841 A CN 201810106841A CN 108172035 B CN108172035 B CN 108172035B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- vertical cylinder
- positioning groove
- curtain
- rotating shaft
- 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
Links
Images
Classifications
-
- 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
-
- 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
- G03B21/56—Projection screens
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a portable projection screen for computer teaching, which comprises a left vertical cylinder, a right vertical cylinder, two supporting legs and a curtain, wherein the upper end and the lower end of the left vertical cylinder and the right vertical cylinder are respectively and correspondingly provided with an upper support and a lower support; the left vertical cylinder comprises a first upright post arranged between the corresponding upper support and the corresponding lower support, a first rotating shaft arranged on the first upright post in a rotatable manner, a first cylinder body arranged outside the first rotating shaft and a first power source arranged on the first cylinder body and used for driving the first rotating shaft to rotate; a first strip-shaped through hole for the curtain to pass through is formed in the right side of the first cylinder; the first rotating shaft is provided with a first limiting groove for clamping the end part of the curtain; the front side of first barrel opens and is equipped with a plurality of groups constant head tank, and every group constant head tank includes first constant head tank and is located the second constant head tank under the first constant head tank. The projector can be conveniently used when the field is changed by matching the components, and is convenient to carry.
Description
Technical Field
The invention relates to a projection screen, in particular to a portable projection screen for computer teaching.
Background
Currently, projectors and projection screens used in cooperation therewith have been widely used in teaching due to improvement of office conditions. With the development of scientific technology, the projection technology is rapidly developed, and projectors are developed towards smaller, lighter and more intelligent directions. However, the structure of the projection screen is substantially unchanged. Whole projection screen is not only bulky moreover, and weight is heavy, carries inconveniently, has influenced the use when the projecting apparatus changes the place.
Disclosure of Invention
The invention provides a portable projection screen for computer teaching, which can solve the problems.
A portable projection screen for computer teaching comprises a left vertical cylinder, a right vertical cylinder, two supporting legs for mounting the left vertical cylinder and the right vertical cylinder, and a curtain mounted between the left vertical cylinder and the right vertical cylinder, wherein the upper end and the lower end of the left vertical cylinder and the lower end of the right vertical cylinder are correspondingly provided with an upper support and a lower support; the left vertical cylinder comprises a first upright post arranged between the corresponding upper support and the corresponding lower support, a first rotating shaft arranged on the first upright post in a rotatable manner, a first cylinder body arranged outside the first rotating shaft and a first power source arranged on the first cylinder body and used for driving the first rotating shaft to rotate; a first strip-shaped through hole for the curtain to pass through is formed in the right side of the first cylinder; the first rotating shaft is provided with a first limiting groove for clamping the end part of the curtain; the right vertical cylinder comprises a second upright column arranged between the corresponding upper support and the corresponding lower support and a second cylinder body positioned outside the second upright column; a second strip-shaped through hole for the curtain to pass through is formed in the left side of the second cylinder; the second upright post is provided with a second limiting groove for clamping the end part of the curtain; the supporting legs comprise bottom plates, universal wheels arranged at the bottoms of the bottom plates and telescopic lifting devices arranged above the bottom plates; the upper end of the lifting device is provided with a supporting plate, and the lower support is arranged on the supporting plate; a plurality of groups of positioning grooves are formed in the front side of the first barrel, and each group of positioning grooves comprises a first positioning groove and a second positioning groove located right below the first positioning groove; the first positioning groove and the second positioning groove are provided with connecting rods, and two ends of each connecting rod are respectively provided with positioning blocks matched with the first positioning groove and the second positioning groove; and a third positioning groove which is the same as the second positioning groove is formed in the position, opposite to the first positioning groove, on the second barrel.
Preferably, the bottom plate is a U-shaped plate, a mounting groove is formed in the bottom of the U-shaped plate, a buffer spring is mounted in the mounting groove, and the upper end of the buffer spring is connected with the bottom of the lifting device.
Preferably, elastic pads are symmetrically arranged on two side walls in the U-shaped plate.
Preferably, the lifting device comprises an electric telescopic rod and a second power source which is arranged on the bottom plate and used for driving the electric telescopic rod.
Preferably, the device also comprises a shell capable of enclosing the left vertical cylinder and the right vertical cylinder, wherein the shell comprises a front shell and a rear shell, and the left end of the front shell is hinged with the left end of the rear shell; the right end of the front shell is provided with a plurality of protruding parts, and the right end of the rear shell is provided with a recessed part matched with the protruding parts.
The invention can realize the movement or carrying of the whole device by controlling the universal wheels. The right vertical cylinder and the left vertical cylinder can be fixed by the connecting rod. Finally, through the cooperation of each part, can conveniently realize the use when the place is changed to the projecting apparatus, convenient to carry.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the two vertical cylinders of the present invention, partially broken away;
FIG. 3 is a schematic illustration of the present invention when not in use;
FIG. 4 is a schematic view of the lifting device of FIG. 3 after retraction;
fig. 5 is a schematic view of the present invention with a housing attached.
Description of reference numerals:
1-bottom plate, 11-mounting groove, 12-buffer spring, 13-elastic pad, 2-universal wheel, 3-lifting device, 4-support plate, 5-lower support, 6-left vertical cylinder, 61-first upright column, 62-first rotating shaft, 63-first cylinder, 631-first positioning groove, 632-second positioning groove, 64-connecting rod, 7-upper support, 8-curtain, 9-right vertical cylinder, 91-second cylinder, 911-third positioning groove, 92-second upright column and 10-shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, a portable projection screen for computer teaching comprises a left vertical cylinder 6, a right vertical cylinder 9, two support legs for mounting the left vertical cylinder 6 and the right vertical cylinder 9, and a curtain 8 mounted between the left vertical cylinder 6 and the right vertical cylinder 9, wherein the upper end and the lower end of the left vertical cylinder 6 and the right vertical cylinder 9 are correspondingly provided with an upper support 7 and a lower support 5; the left vertical cylinder 6 comprises a first upright post 61 arranged between the corresponding upper support 7 and the corresponding lower support 5, a first rotating shaft 62 rotatably arranged on the first upright post 61, a first cylinder 63 arranged outside the first rotating shaft 62, and a first power source arranged on the first cylinder 63 and used for driving the first rotating shaft 62 to rotate; a first strip-shaped through hole for the curtain 8 to pass through is formed in the right side of the first cylinder 63; the first rotating shaft 62 is provided with a first limiting groove for clamping the end part of the curtain 8; the right vertical cylinder 9 comprises a second vertical column 92 installed between the corresponding upper support 7 and lower support 5 and a second cylinder 91 positioned outside the second vertical column 92; a second strip-shaped through hole for the curtain 8 to pass through is formed in the left side of the second cylinder 91; a second limiting groove used for clamping the end part of the curtain 8 is formed in the second upright post 92; the supporting legs comprise a bottom plate 1, universal wheels 2 arranged at the bottom of the bottom plate 1 and a lifting device 3 which is arranged above the bottom plate 1 and can be stretched and retracted; the upper end of the lifting device 3 is provided with a support plate 4, and the lower support 5 is arranged on the support plate 4; a plurality of groups of positioning grooves are formed in the front side of the first cylinder 63, and each group of positioning grooves comprises a first positioning groove 631 and a second positioning groove 632 positioned right below the first positioning groove 631; the first positioning groove 631 and the second positioning groove 632 are provided with a connecting rod 64, and two ends of the connecting rod 64 are respectively provided with a positioning block matched with the first positioning groove 631 and the second positioning groove 632; a third positioning groove 911 identical to the second positioning groove 632 is formed at a position of the second cylinder 91 opposite to the first positioning groove 631.
Preferably, the bottom plate 1 is a U-shaped plate, the bottom of the U-shaped plate is provided with a mounting groove 11, a buffer spring 12 is mounted in the mounting groove 11, the upper end of the buffer spring 12 is connected with the bottom of the lifting device 3, and vibration in the moving process can be reduced.
Preferably, elastic pads 13 are symmetrically arranged on two side walls in the U-shaped plate.
Preferably, the lifting device 3 comprises an electric telescopic rod and a second power source installed on the bottom plate 1 for driving the electric telescopic rod.
Preferably, the device further comprises a shell 10 capable of enclosing the left vertical cylinder 6 and the right vertical cylinder 9, wherein the shell 10 comprises a front shell and a rear shell, and the left end of the front shell is hinged with the left end of the rear shell; the right end of the front shell is provided with a plurality of protruding parts, and the right end of the rear shell is provided with a recessed part matched with the protruding parts. The shell 10 can protect the left vertical cylinder 6 and the right vertical cylinder 9 by being additionally arranged, and the collision of other objects in the carrying process is ensured.
As shown in fig. 5, in a normal state (when not in use), the two universal wheels 2 are in a locked state. When in use, the universal wheel 2 is firstly opened, and the whole device is moved to a required occasion. The projection of the housing 10 is then removed from the recess and the entire housing 10 is removed, as shown in fig. 4. The right end of the connecting rod 64 is taken down from the third positioning slot 911 and is rotatably clamped in the second positioning slot 632. Then, the first power source is started, and the right vertical tube 9 is moved away from the left vertical tube 6 until the curtain 8 is completely stretched. And finally, starting a second power source to control the electric telescopic rod to extend to the required height, as shown in figure 1. Of course, the second power source may be started first to control the electric telescopic rod to extend to a desired height, then the connecting rod 64 is taken down to start the first power source, and the right vertical tube 9 is moved in a direction away from the left vertical tube 6 until the curtain 8 is completely extended. After use, the storage can be performed in reverse order of the above-described unfolding process. Finally, the projector can be conveniently used when the field is changed through the matching of all the parts, and the projector is convenient to carry.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A portable projection screen for computer teaching is characterized by comprising a left vertical cylinder (6), a right vertical cylinder (9), two supporting legs for mounting the left vertical cylinder (6) and the right vertical cylinder (9), and a curtain (8) mounted between the left vertical cylinder (6) and the right vertical cylinder (9), wherein the upper end and the lower end of the left vertical cylinder (6) and the right vertical cylinder (9) are correspondingly provided with an upper support (7) and a lower support (5);
the left vertical cylinder (6) comprises a first upright post arranged between the corresponding upper support (7) and the corresponding lower support (5), a first rotating shaft arranged on the first upright post in a rotatable manner, a first cylinder arranged outside the first rotating shaft and a first power source arranged on the first cylinder and used for driving the first rotating shaft to rotate; a first strip-shaped through hole for a curtain (8) to pass through is formed in the right side of the first cylinder; the first rotating shaft is provided with a first limiting groove for clamping the end part of the curtain (8);
the right vertical cylinder (9) comprises a second upright column arranged between the corresponding upper support (7) and the corresponding lower support (5) and a second cylinder body positioned outside the second upright column; a second strip-shaped through hole for a curtain (8) to pass through is formed in the left side of the second cylinder; the second upright post is provided with a second limiting groove for clamping the end part of the curtain (8);
the supporting legs comprise a bottom plate (1), universal wheels (2) arranged at the bottom of the bottom plate (1) and a lifting device (3) which is arranged above the bottom plate (1) and can be stretched and retracted;
the upper end of the lifting device is provided with a supporting plate (4), and the lower support (5) is arranged on the supporting plate (4);
a plurality of groups of positioning grooves are formed in the front side of the first barrel, and each group of positioning grooves comprises a first positioning groove and a second positioning groove located right below the first positioning groove; the first positioning groove and the second positioning groove are provided with connecting rods, and two ends of each connecting rod are respectively provided with positioning blocks matched with the first positioning groove and the second positioning groove; and a third positioning groove with the same structure as the second positioning groove is formed in the position, opposite to the first positioning groove, on the second barrel.
2. The portable projection screen for computer teaching as claimed in claim 1, wherein the base plate (1) is a U-shaped plate, the bottom of the U-shaped plate is provided with an installation groove (11), the installation groove (11) is internally provided with a buffer spring (12), and the upper end of the buffer spring (12) is connected with the bottom of the lifting device (3).
3. A portable projection screen for computer teaching as claimed in claim 2 wherein elastic pads (13) are symmetrically mounted on both side walls of the U-shaped board.
4. The portable projection screen for computer teaching as claimed in claim 1, wherein the lifting means (3) comprises an electric telescopic rod and a second power source mounted on the base plate (1) for driving the electric telescopic rod.
5. The portable projection screen for computer teaching as claimed in claim 1, further comprising a housing (10) capable of enclosing the left stand cylinder (6) and the right stand cylinder (9), wherein the housing (10) comprises a front case and a rear case, and the left end of the front case is hinged with the left end of the rear case; the right end of the front shell is provided with a plurality of protruding parts, and the right end of the rear shell is provided with a recessed part matched with the protruding parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106841.9A CN108172035B (en) | 2018-02-02 | 2018-02-02 | Portable projection screen is used in computer teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810106841.9A CN108172035B (en) | 2018-02-02 | 2018-02-02 | Portable projection screen is used in computer teaching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108172035A CN108172035A (en) | 2018-06-15 |
| CN108172035B true CN108172035B (en) | 2020-02-21 |
Family
ID=62513203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810106841.9A Active CN108172035B (en) | 2018-02-02 | 2018-02-02 | Portable projection screen is used in computer teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108172035B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112863257B (en) * | 2021-01-21 | 2022-04-29 | 菏泽学院 | Case analysis device for political and economic teaching |
| CN113992899A (en) * | 2021-10-21 | 2022-01-28 | 浙江科比特科技有限公司 | Unmanned aerial vehicle passes back image composite graph equipment in real time |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2185905Y (en) * | 1994-05-31 | 1994-12-21 | 陈建军 | Folding back transparent type polyester fibre projection screen |
| CN101038432A (en) * | 2006-02-14 | 2007-09-19 | 精工爱普生株式会社 | Portable projection screen assembly |
| CN102243429A (en) * | 2011-06-16 | 2011-11-16 | 中国科学院福建物质结构研究所 | Portable screen of micro projector |
| CN204347422U (en) * | 2015-01-20 | 2015-05-20 | 临沂大学 | A kind of computer teaching Scroll projection screen |
| CN105372921A (en) * | 2015-12-15 | 2016-03-02 | 重庆触视科技有限公司 | Portable projection screen |
| CN205844733U (en) * | 2016-07-19 | 2016-12-28 | 中国人民解放军空军勤务学院 | A kind of teaching projection screen |
| CN107219717A (en) * | 2017-06-19 | 2017-09-29 | 冯雪 | Projection screen display device is used in teaching |
-
2018
- 2018-02-02 CN CN201810106841.9A patent/CN108172035B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2185905Y (en) * | 1994-05-31 | 1994-12-21 | 陈建军 | Folding back transparent type polyester fibre projection screen |
| CN101038432A (en) * | 2006-02-14 | 2007-09-19 | 精工爱普生株式会社 | Portable projection screen assembly |
| CN102243429A (en) * | 2011-06-16 | 2011-11-16 | 中国科学院福建物质结构研究所 | Portable screen of micro projector |
| CN204347422U (en) * | 2015-01-20 | 2015-05-20 | 临沂大学 | A kind of computer teaching Scroll projection screen |
| CN105372921A (en) * | 2015-12-15 | 2016-03-02 | 重庆触视科技有限公司 | Portable projection screen |
| CN205844733U (en) * | 2016-07-19 | 2016-12-28 | 中国人民解放军空军勤务学院 | A kind of teaching projection screen |
| CN107219717A (en) * | 2017-06-19 | 2017-09-29 | 冯雪 | Projection screen display device is used in teaching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108172035A (en) | 2018-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108172035B (en) | Portable projection screen is used in computer teaching | |
| CN210804955U (en) | City planning overall arrangement show mechanism | |
| CN212960663U (en) | Informationized teaching projection device | |
| US2346274A (en) | Projection screen stand | |
| CN210402774U (en) | Remote education recording terminal | |
| CN203643681U (en) | Portable mobile support of cylindrical telescope | |
| CN207421664U (en) | A kind of projector equipment adjusted based on slide | |
| CN216201866U (en) | Computer support convenient to accomodate | |
| CN105625757A (en) | Small foldable stage | |
| CN207312785U (en) | A kind of portable actinobacillus device with height adjusting structure | |
| CN110103235B (en) | Adjustable mobile multimedia display automation robot | |
| CN204903274U (en) | A tensile test appearance for condenser | |
| CN212379710U (en) | Education projector | |
| CN208039905U (en) | A kind of Collapsible building support underframe | |
| CN113763756B (en) | Projection equipment for high school teaching and use method thereof | |
| CN212156388U (en) | External projector equipment for computer | |
| CN217273296U (en) | Portable level gauge support frame | |
| CN219891599U (en) | Software development test equipment | |
| CN207096667U (en) | A kind of foldable multifunctional projector | |
| CN104957878B (en) | Multifunctional convenient table | |
| CN103698881A (en) | Portable drum type telescope moving support | |
| CN215219993U (en) | Movable automobile teaching aid model display stand | |
| CN211126856U (en) | Integrated display device of comprehensive wiring standard management and chemistry | |
| CN216387907U (en) | Display with protection frame function | |
| CN220303369U (en) | Multi-display screen bracket for computer software development |
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 |