CN111301867A - Multi-angle projection type computer display device - Google Patents
Multi-angle projection type computer display device Download PDFInfo
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- CN111301867A CN111301867A CN202010251377.XA CN202010251377A CN111301867A CN 111301867 A CN111301867 A CN 111301867A CN 202010251377 A CN202010251377 A CN 202010251377A CN 111301867 A CN111301867 A CN 111301867A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
- B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
- B65D81/053—Corner, edge or end protectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
- B65D25/10—Devices to locate articles in containers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a multi-angle projection type computer display device, wherein a certain miniature concave-convex structure is formed on the surface of a white adhesive layer by a white longitudinal silk thread and a white transverse silk thread, so that the projection effect is improved, the reflection effect after projection is reduced, the display effect of a curtain is effectively improved, and the problems of poor display and reflection caused by certain angles are solved; according to the invention, the guide and wiping device is arranged on the projection screen, the top end of the guide and wiping device is connected and fixed with the winding device of the screen, the wiping plates are respectively arranged at the front side and the rear side inside the guide and wiping device, when the screen is lowered, the two wiping plates are controlled to be expanded to enable the screen to normally fall down, when the screen is wound, the two wiping plates are controlled to be attached to the screen, so that the screen is wiped by the wiping plates when the screen is wound, and the beneficial effect of automatically wiping the screen is achieved.
Description
Technical Field
The invention relates to the technical field of computer display, in particular to a multi-angle projection type computer display device.
Background
As one of the most common devices in people's daily life, computers are widely used in various fields of people's daily life, and usually, in daily teaching or meeting, a projection computer is often used to control a display device to play contents.
At present, for occasions such as a large meeting, a study and the like in a hall and the like, a plurality of projection devices are generally arranged so as to project screens from multiple angles, the display effect can be greatly improved in the mode, however, the use occasions of the projection devices are generally used in the large hall or the meeting room, which leads to that the display effect requirement is very high when the projection devices are used, however, the existing projection curtain is generally received by a milky white or white curtain, the structure is generally made of plastics, the structure is easy to reflect light when in display due to the large reflection effect, so that the problem of unclear observation is easy to occur when the projection device is observed at certain angles, the display effect is influenced, and the plastic structure is easy to damage, the outer surface of the curtain can be polluted by dust, the dust is not convenient to clean, and the definition of projection content is influenced.
Disclosure of Invention
Technical scheme (I)
The invention is realized by the following technical scheme: the invention provides a multi-angle projection type computer display device, which comprises a multi-angle projector and a plurality of projection screen mechanisms, wherein each projection lens of the multi-angle projector corresponds to one projection screen mechanism, and the suspension direction and the angle of each projection screen mechanism are different, wherein each projection screen mechanism at least comprises a winding device, a guiding and wiping device and a projection screen, one end of the projection screen is connected inside the winding device and is wound and unwound by the winding device, and the multi-angle projection type computer display device is characterized in that,
the guiding and wiping device is connected to a winding port of the winding device, and the projection curtain penetrates through the guiding and wiping device so as to be guided and wiped by the guiding and wiping device;
the two sides of the projection curtain in the width direction are provided with guide winding strips in a buckling mode, and the guide winding strips are wound by the winding device; and is
The guide rolling strip and the projection curtain are bonded and fixed together by a bonding strip;
the projection curtain at least comprises a plastic bottom layer, a tensile layer, a light absorption layer, a white longitudinal thread, a white transverse thread and a white adhesive layer in the thickness direction, wherein the tensile layer is integrally bonded on one surface of the plastic bottom layer, the light absorption layer is arranged on one surface of the tensile layer far away from the plastic bottom layer, the side of the light absorption layer far away from the tensile layer is provided with the white longitudinal silk thread, the white transverse silk thread which is vertically arranged with the white longitudinal silk thread is overlapped on the white longitudinal silk thread, a layer of white glue layer is coated and arranged between the white longitudinal silk thread and the white transverse silk thread and on one side of the white transverse silk thread far away from the white longitudinal silk thread, the white longitudinal silk threads and the white transverse silk threads enable the surface of the white glue layer to have a certain micro concave-convex structure, so that the projection effect is improved, and the reflection effect after projection is reduced.
Preferably, the tensile layer is a non-woven fabric tensile layer or a fine wire mesh tensile layer.
Preferably, the guide winding piece strip is of a smooth structure, the direction of the white transverse threads is along the width direction of the projection screen, and the white longitudinal threads are in the vertical direction of the projection screen in the stretching and winding process.
Further, as a preferred option, when the projection curtain is rolled up by the rolling device, the guiding and wiping device wipes and guides the projection curtain at the same time, and when wiping, the guiding and wiping device can apply a certain pressure to the projection curtain.
Further, as preferred, the bottom end of the projection curtain is also fixedly connected with a configuration block.
Further, as preferred, direction and wiping arrangement comprises shell, through-hole, connecting rod, activity wiping plate, polished rod and drive arrangement, the vertical through-hole of having seted up in middle part in the shell, shell top front side is through the mutual lock solid of bolt and connecting rod, the both sides all are embedded with the activity wiping plate around the shell is inside, the polished rod runs through two activity wiping plates, and both ends are through the mutual lock solid of bolt and shell respectively around the polished rod, activity wiping plate right-hand member rotates through pivot and drive arrangement and is connected, the connecting rod top is through the mutual lock solid of bolt and coiling mechanism.
Further, as an optimization, the winding device is composed of a fixed shell, a first motor, a winding shaft and a shaft seat, the right end inside the fixed shell is locked with the first motor through a bolt, an output shaft at the left end of the first motor is locked with the right end of the winding shaft through a bolt, the left end of the winding shaft is inserted into the shaft seat, the left end of the shaft seat is locked with the fixed shell through a bolt, the top end of the projection curtain is locked with the winding shaft through a bolt, the winding shaft winds the projection curtain, and the front side of the bottom end of the fixed shell is locked with a connecting rod through a bolt.
Further, as preferred, the driving device comprises a second motor, a screw rod, a movable rotating shaft, a first connecting rod and a second connecting rod, wherein an output shaft at the left end of the second motor is locked with the screw rod through a bolt, the screw rod transversely penetrates through the middle of the movable rotating shaft and is in threaded connection with the movable rotating shaft, the first connecting rod and the second connecting rod are arranged on the upper side and the lower side of the movable rotating shaft respectively, the right ends of the first connecting rod and the second connecting rod rotate along the movable rotating shaft, the left ends of the first connecting rod and the second connecting rod are rotatably connected with movable wiping plates on the front side and the rear side inside the shell respectively through rotating shafts, and the left end of the second motor is locked with the shell through a bolt.
Further, as preferred, the length of through-hole is greater than projection curtain length, and the thickness of through-hole is greater than projection curtain thickness, the activity is wiped the board and is provided with two, all is provided with between two activity wiping boards and wipes the cloth, and the length of wiping the cloth and projection curtain length unanimity.
Further, preferably, the surface of the polish rod is smooth, and the left end inside the movable wiping plate is attached to the polish rod; when the movable wiping plates are expanded, the first connecting rod and the second connecting rod are inclined outwards at an angle of forty-five degrees from right to left; the screw rod left and right sides all is provided with the stopper, and when the stopper contact of activity pivot and screw rod right-hand member, both sides laminating around two movable cleaning plates respectively with the projection curtain.
(II) advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention provides a multi-angle projection computer display device, which redesigns a projection curtain, wherein the projection curtain at least comprises a plastic bottom layer, a tensile layer, a light absorption layer, a white longitudinal silk thread, a white transverse silk thread and a white glue layer in the thickness direction, the tensile layer is integrally bonded on one surface of the plastic bottom layer, the light absorption layer is arranged on one surface of the tensile layer far away from the plastic bottom layer, the white longitudinal silk thread is arranged on one side of the light absorption layer far away from the tensile layer, the white transverse silk thread which is vertically arranged with the white longitudinal silk thread is overlapped on the white longitudinal silk thread, a white glue layer is coated between the white longitudinal silk thread and the white transverse silk thread and on one side of the white transverse silk thread far away from the white longitudinal silk thread, and the white longitudinal silk thread and the white transverse silk thread enable the surface of the white glue layer to have a certain micro concave-convex structure, the projection effect is improved, the reflection effect after projection is reduced, the display effect of the curtain is effectively improved, and the problems of poor display and reflection caused by certain angles are reduced;
(2) according to the invention, the guide and wiping device is arranged on the projection screen, the top end of the guide and wiping device is connected and fixed with the winding device of the screen, the wiping plates are respectively arranged at the front side and the rear side inside the guide and wiping device, when the screen is lowered, the two wiping plates are controlled to be expanded to enable the screen to normally fall down, when the screen is wound, the two wiping plates are controlled to be attached to the screen, so that the screen is wiped by the wiping plates when the screen is wound, and the beneficial effect of automatically wiping the screen is achieved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a sectional view of the internal structure of the winding device of the present invention;
FIG. 3 is a schematic view of the guiding and wiping device of the present invention;
FIG. 4 is a top sectional view of the internal structure of the guiding and wiping device of the present invention;
fig. 5 is a partially enlarged view of the area a of fig. 4 according to the present invention.
Fig. 6 is a schematic cross-sectional structure view of the projection curtain of the present invention in the thickness direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1-6, the present invention provides a multi-angle projection computer display device: the multi-angle projection screen comprises a multi-angle projector and a plurality of projection screen mechanisms, wherein each projection lens of the multi-angle projector corresponds to one projection screen mechanism, and the hanging direction and the hanging angle of each projection screen mechanism are different, each projection screen mechanism at least comprises a winding device 1, a guiding and wiping device 3 and a projection screen 4, wherein one end of the projection screen 4 is connected inside the winding device 1 and is wound and released by the winding device, and the multi-angle projection screen is characterized in that the guiding and wiping device 3 is connected to a winding port of the winding device, and the projection screen 4 penetrates through the guiding and wiping device 3 so as to be guided and wiped by the guiding and wiping device 3;
the two sides of the projection curtain 4 in the width direction are provided with guide winding strips 2 in a buckling mode, and the guide winding strips 2 are wound by the winding device; and is
The guide winding strip 2 and the projection curtain 4 are bonded and fixed together by a bonding strip 6;
the projection curtain 4 at least comprises a plastic bottom layer 7, a tensile layer 8, a light absorption layer 9, a white longitudinal silk thread 10, a white transverse silk thread 16 and a white glue layer 15 in the thickness direction, wherein the tensile layer is integrally bonded on one surface of the plastic bottom layer, the light absorption layer is arranged on the surface of the tensile layer far away from the plastic bottom layer, the white longitudinal silk thread is arranged on one side of the light absorption layer far away from the tensile layer, the white transverse silk thread vertically arranged with the white longitudinal silk thread is superposed on the white longitudinal silk thread, a white glue layer is coated between the white longitudinal silk thread and the white transverse silk thread and on one side of the white transverse silk thread 16 far away from the white longitudinal silk thread 10, and the white longitudinal silk thread 10 and the white transverse silk thread 16 make the surface of the white glue layer have a certain micro concave-convex structure, in order to improve the projection effect and reduce the reflection effect after projection.
In this embodiment, the tensile layer 8 is a non-woven fabric tensile layer or a thin wire mesh tensile layer.
The guide winding strip 2 is of a smooth structure, the direction of the white transverse silk thread 16 is along the width direction of the projection curtain, and the white longitudinal silk thread 10 is in the vertical direction of the projection curtain, wherein the projection curtain stretches out and is wound in.
Projection curtain 4 by when the coiling mechanism carries out the rolling, direction and wiping arrangement 3 are right simultaneously projection curtain 4 wipes and leads, and when wiping, direction and wiping arrangement can be right projection curtain applys certain pressure.
In order to ensure the droop effect and accuracy of the projection screen, the bottom end of the projection screen 4 is also fixedly connected with a configuration block 5.
The guiding and wiping device 3 is composed of a shell 31, a through hole 32, a connecting rod 33, movable wiping plates 34, a polish rod 35 and a driving device 36, wherein the through hole 32 is vertically formed in the middle of the inside of the shell 31, the front side of the top end of the shell 31 is mutually locked with the connecting rod 33 through a bolt, the movable wiping plates 34 are embedded into the front side and the rear side of the inside of the shell 31, the polish rod 35 penetrates through the two movable wiping plates 34, the front end and the rear end of the polish rod 35 are mutually locked with the shell 31 through bolts, the right end of each movable wiping plate 34 is rotatably connected with the driving device 36 through a rotating shaft, and the top end of the connecting rod 33 is mutually locked.
The winding device 1 comprises a fixed shell 11, a first motor 12, a winding shaft 13 and a shaft seat 14, wherein the right end inside the fixed shell 11 is mutually locked with the first motor 12 through a bolt, an output shaft at the left end of the first motor 12 is mutually locked with the right end of the winding shaft 13 through a bolt, the left end of the winding shaft 13 is inserted into the shaft seat 14, the left end of the shaft seat 14 is mutually locked with the fixed shell 11 through a bolt, the top end of the projection curtain 4 is mutually locked with the winding shaft 13 through a bolt, the winding shaft 13 winds the projection curtain 4, and the front side of the bottom end of the fixed shell 11 is mutually locked with a connecting rod 33 through a bolt.
The driving device 36 is composed of a second motor 361, a screw 362, a movable rotating shaft 363, a first connecting rod 364 and a second connecting rod 365, an output shaft at the left end of the second motor 361 is locked with the screw 362 through a bolt, the screw 362 transversely penetrates through the middle of the movable rotating shaft 363 and is in threaded connection with the movable rotating shaft 363, a first connecting rod 364 and a second connecting rod 365 are respectively arranged at the upper side and the lower side of the movable rotating shaft 363, the right ends of the first connecting rod 364 and the second connecting rod 365 rotate along the movable rotating shaft 363, the left ends of the first connecting rod 364 and the second connecting rod 365 are respectively in rotating connection with the movable locking wiping plates 34 at the front side and the rear side inside the shell 31 through rotating shafts, and the left end of the second motor 361 is mutually connected with the shell 31 through a bolt.
The length of through-hole 32 is greater than projection curtain 4 length, and the thickness of through-hole 32 is greater than projection curtain 4 thickness, activity wiping plate 34 is provided with two, all is provided with the wiping cloth between two activity wiping plates 34, and the length of wiping cloth is unanimous with projection curtain 4 length.
The surface of the polish rod 35 is smooth, and the left end inside the movable wiping plate 34 is attached to the polish rod 35; when the movable wiping plates 34 are expanded, the first connecting rod 364 and the second connecting rod 365 are inclined outwards at an angle of forty-five degrees from right to left; the left side and the right side of the screw 362 are provided with limit blocks, and when the movable rotating shaft 363 contacts with the limit blocks at the right end of the screw 362, the two movable wiping plates 34 are respectively attached to the front side and the rear side of the projection curtain 4.
Before the invention is used, the winding device 1 is firstly fixed on a required position, when the invention is used, power is supplied by external control equipment and control instructions are sent to respectively control the first motor 11 and the second motor 361, and a computer display projector is controlled to irradiate the display content of the computer on the projection screen 4 for displaying; after the device is used, the projection screen 4 needs to be rolled, when the projection screen 4 is rolled, the second motor 361 is controlled to generate power to drive the center of a circle at the right end of the screw 362 to rotate through the output shaft, the screw 362 drives the movable rotating shaft 363 to move rightwards through the thread fit between the screw 362 and the movable rotating shaft 363, the moving distance of the movable rotating shaft 363 is limited due to the fact that the left side and the right side of the screw 362 are provided with limit blocks, the situation that the movable wiping plate 34 clamps the projection screen 4 too tightly to influence the rolling of the projection screen 4 is avoided, the movable rotating shaft 363 pulls the right ends of the first connecting rod 364 and the second connecting rod 365 to move rightwards, when the movable wiping plate 34 expands, the first connecting rod 364 and the second connecting rod 365 incline outwards at an angle of forty-five degrees from right to left, and the movable wiping plate 34 is pulled to contract through the first connecting rod 364 and the second connecting rod 365 when the movable rotating shaft 363 moves, the movable wiping plates 34 are limited in moving track through the polish rod 35, so that the two movable wiping plates 34 are contracted to clamp the projection curtain 4, the first motor 12 is controlled to generate power to drive the winding shaft 13 to rotate through the output shaft, the projection curtain 4 is wound through the rotating shaft of the winding shaft 13, the projection curtain 4 is wiped through the movable wiping plates 34 during winding, and the beneficial effect of automatically wiping the projection curtain 4 is achieved; when the projection curtain 4 is placed down, the two wiping plates are controlled to expand, so that the curtain falls normally.
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 attributes 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.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A multi-angle projection type computer display device comprises a multi-angle projector and a plurality of projection screen mechanisms, wherein each projection lens of the multi-angle projector corresponds to one projection screen mechanism, and the hanging direction and the angle of each projection screen mechanism are different, wherein the projection screen mechanisms at least comprise a winding device (1), a guiding and wiping device (3) and a projection screen (4), one end of the projection screen (4) is connected inside the winding device (1) and is wound and unwound by the winding device, and the multi-angle projection type computer display device is characterized in that,
the guiding and wiping device (3) is connected to a winding opening of the winding device, and the projection curtain (4) penetrates through the guiding and wiping device (3) so as to be guided and wiped by the guiding and wiping device (3);
the two sides of the projection curtain (4) in the width direction are provided with guide winding strips (2) in a buckling mode, and the guide winding strips (2) are wound by the winding device; and is
The guide winding strip (2) and the projection curtain (4) are bonded and fixed together by a bonding strip (6);
the projection curtain (4) at least comprises a plastic bottom layer (7), a tensile layer (8), a light absorption layer (9), a white longitudinal silk thread (10), a white transverse silk thread (16) and a white glue layer (15) in the thickness direction, wherein the tensile layer is integrally bonded on one surface of the plastic bottom layer, the light absorption layer is arranged on one surface of the tensile layer far away from the plastic bottom layer, the white longitudinal silk thread is arranged on one side of the light absorption layer far away from the tensile layer, the white transverse silk thread vertically arranged with the white longitudinal silk thread is stacked on the white longitudinal silk thread, a white glue layer is arranged between the white longitudinal silk thread and the white transverse silk thread and on one side of the white transverse silk thread (16) far away from the white longitudinal silk thread (10), and the white longitudinal silk thread (10) and the white transverse silk thread (16) enable the surface of the white glue layer to have a certain miniature concave-convex structure, in order to improve the projection effect and reduce the reflection effect after projection.
2. A multi-angle projection computer display apparatus as claimed in claim 1, wherein: the tensile layer (8) is a non-woven fabric tensile layer or a thin steel wire mesh tensile layer.
3. A multi-angle projection computer display apparatus as claimed in claim 1, wherein: the guide winding strip (2) is of a smooth structure, the direction of the white transverse silk thread (16) is along the width direction of the projection curtain, and the white longitudinal silk thread (10) is in the vertical direction of stretching out and winding in the projection curtain.
4. A multi-angle projection computer display apparatus as claimed in claim 1, wherein: projection curtain (4) quilt when the coiling is carried out to the coiling mechanism, direction and wiping arrangement (3) are right simultaneously projection curtain (4) clean and the direction, and when cleaning, direction and wiping arrangement can be right projection curtain applys certain pressure.
5. A multi-angle projection computer display apparatus as claimed in any one of claims 1 to 4, wherein: the bottom end of the projection curtain (4) is also fixedly connected with a configuration block (5).
6. The multi-angle projection computer display apparatus of claim 5, wherein: the guiding and wiping device (3) is composed of a shell (31), a through hole (32), a connecting rod (33), a movable wiping plate (34), a polish rod (35) and a driving device (36), the through hole (32) is vertically formed in the middle of the inside of the shell (31), the front side of the top end of the shell (31) is locked with the connecting rod (33) through bolts, the movable wiping plate (34) is embedded into the shell (31) from front to back, the polish rod (35) penetrates through the two movable wiping plates (34), the front end and the rear end of the polish rod (35) are locked with the shell (31) through bolts respectively, the right end of the movable wiping plate (34) is rotatably connected with the driving device (36) through a rotating shaft, and the top end of the connecting rod (33) is locked with the winding device (1) through bolts.
7. The multi-angle projection computer display apparatus of claim 6, wherein: the winding device (1) is composed of a fixed shell (11), a first motor (12), a winding shaft (13) and a shaft seat (14), the right end inside the fixed shell (11) is locked with the first motor (12) through a bolt, an output shaft at the left end of the first motor (12) is locked with the right end of the winding shaft (13) through a bolt, the left end of the winding shaft (13) is inserted into the shaft seat (14), the left end of the winding shaft (14) is locked with the fixed shell (11) through a bolt, the top end of the projection curtain (4) is locked with the winding shaft (13) through a bolt, the winding shaft (13) winds the projection curtain (4), and the front side at the bottom end of the fixed shell (11) is locked with a connecting rod (33) through a bolt.
8. The multi-angle projection computer display apparatus of claim 7, wherein: the driving device (36) consists of a second motor (361), a screw rod (362), a movable rotating shaft (363), a first connecting rod (364) and a second connecting rod (365), an output shaft at the left end of the second motor (361) is mutually locked with a screw rod (362) through a bolt, the screw rod (362) transversely penetrates through the middle part of the movable rotating shaft (363), and is in threaded connection with the movable rotating shaft (363), the upper side and the lower side of the movable rotating shaft (363) are respectively provided with a first connecting rod (364) and a second connecting rod (365), and the right ends of the first connecting rod (364) and the second connecting rod (365) rotate along the movable rotating shaft (363), the left ends of the first connecting rod (364) and the second connecting rod (365) are respectively connected with the movable wiping plates (34) at the front side and the rear side in the shell (31) in a rotating way through a rotating shaft, the left end of the second motor (361) is locked with the shell (31) through a bolt.
9. A multi-angle projection computer display apparatus as claimed in claim 1, wherein: the length of through-hole (32) is greater than projection curtain (4) length, and the thickness of through-hole (32) is greater than projection curtain (4) thickness, activity wiping plate (34) are provided with two, all are provided with between two activity wiping plates (34) and wipe cloth, and wipe cloth's length and projection curtain (4) length unanimous.
10. A multi-angle projection computer display apparatus as claimed in claim 9, wherein: the surface of the polish rod (35) is smooth, and the left end inside the movable wiping plate (34) is attached to the polish rod (35); when the movable wiping plates (34) are expanded, the first connecting rod (364) and the second connecting rod (365) are inclined outwards at an angle of forty-five degrees from right to left; the left side and the right side of the screw rod (362) are provided with limiting blocks, and when the movable rotating shaft (363) is in contact with the limiting blocks at the right end of the screw rod (362), the two movable wiping plates (34) are respectively attached to the front side and the rear side of the projection curtain (4).
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| CN202010251377.XA CN111301867B (en) | 2020-04-01 | 2020-04-01 | Multi-angle projection type computer display device |
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| CN202010251377.XA CN111301867B (en) | 2020-04-01 | 2020-04-01 | Multi-angle projection type computer display device |
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| CN201514537U (en) * | 2009-09-27 | 2010-06-23 | 宏益科技材料股份有限公司 | Optical projection screen |
| CN102944966A (en) * | 2012-10-17 | 2013-02-27 | 廖长春 | Interactive type projection screen |
| CN204347421U (en) * | 2015-01-16 | 2015-05-20 | 西南石油大学 | A kind of projection screen with automatic dedusting function |
| CN204746926U (en) * | 2015-06-29 | 2015-11-11 | 南京工程学院 | Automatic clean projection curtain device |
| CN206426589U (en) * | 2016-12-15 | 2017-08-22 | 广州市柏拉图塑胶有限公司 | High definition curtain |
| CN106940512A (en) * | 2017-05-04 | 2017-07-11 | 杜美玲 | It is a kind of from cleaning type teaching projection screen |
| CN107354501A (en) * | 2017-07-08 | 2017-11-17 | 佛山市正略信息科技有限公司 | Adjustable folder bucket manipulator in a kind of electroplating device |
| CN109254489A (en) * | 2018-11-05 | 2019-01-22 | 成都菲斯特科技有限公司 | Projection screen and optical projection system |
| CN209231702U (en) * | 2018-12-03 | 2019-08-09 | 广州市柏拉图塑胶有限公司 | High definition curtain |
| CN209683765U (en) * | 2019-03-12 | 2019-11-26 | 杭州量大互联科技有限公司 | One kind being based on Internet of Things power transmission network object transport device |
| CN209486458U (en) * | 2019-04-24 | 2019-10-11 | 楚雄千镒广告传媒有限公司 | A kind of multimedia overhead projector cloth draw off mechanism |
| CN110451356A (en) * | 2019-08-06 | 2019-11-15 | 镇江市高等专科学校 | A kind of computer teaching projection screen wrap-up |
| CN110618579A (en) * | 2019-10-23 | 2019-12-27 | 浙江更土电子商务有限公司 | Automatic clean projection cloth |
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