CN111812935B - Novel three-dimensional holographic projector display equipment - Google Patents
Novel three-dimensional holographic projector display equipment Download PDFInfo
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- CN111812935B CN111812935B CN202010778128.6A CN202010778128A CN111812935B CN 111812935 B CN111812935 B CN 111812935B CN 202010778128 A CN202010778128 A CN 202010778128A CN 111812935 B CN111812935 B CN 111812935B
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- 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
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- 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
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- Business, Economics & Management (AREA)
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- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses novel three-dimensional holographic projector display equipment which comprises a bottom plate and a top plate, wherein a first mounting plate and a second mounting plate are fixedly welded on two sides of the opposite ends of the bottom plate and the top plate respectively, a first sliding groove and a second sliding groove are formed in the front parts of the left ends of the first mounting plate and the second mounting plate respectively, a supporting mechanism is movably connected between the first mounting plate and the second mounting plate together, a pushing mechanism is fixedly installed at the upper end of the bottom plate and fixedly connected with the supporting mechanism, two sliding plates and two fixing plates are fixedly connected at the upper end of the top plate, a display mechanism is connected in the two sliding plates in a sliding mode together, a projection plate is detachably installed at the left end of the display mechanism, and a driving mechanism is fixedly installed at the upper end of the bottom plate. The novel three-dimensional holographic projector display equipment is compact in structure, convenient to fold and store, capable of rapidly disassembling and assembling the projection plate, small in storage space, multifunctional and strong in stability.
Description
Technical Field
The invention relates to the field of landscaping equipment, in particular to novel three-dimensional holographic projector display equipment.
Background
The holographic projection technology belongs to a 3D technology, and originally refers to a technology for recording and reproducing a real three-dimensional image of an object by utilizing an interference principle. Then, with the guidance of science fiction movies and commercial propaganda, the concept of holographic projection is gradually extended to commercial activities such as stage performance, exhibition and exhibition. However, the holography which we know at ordinary times is not the holography projection in the strict sense, but a holography projection technology of the type which uses Peltier's ghost, edge blanking and the like to realize 3D effect.
The equipment operation that present holographic projection display equipment adopted the projection structure more, because projection equipment adopts mostly to fix on the desktop of the correspondence of projection curtain when using, the projection curtain is fixed in on the wall, can't dismantle display device according to the demand of teaching and carry after the use, reduce through the use convenience in the teaching field, and occupation space is big, can't fold it after the use and accomodate, stability is relatively poor in accommodation process, very easily take place to rock, influence the projection effect, therefore, we have provided a novel holographic stereographic projector display equipment.
Disclosure of Invention
The invention mainly aims to provide a novel stereoscopic holographic projector display device which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a novel stereoscopic holographic projector display device comprises a bottom plate and a top plate, wherein the bottom plate and the top plate are the same in size and are symmetrically distributed up and down, a first mounting plate and a second mounting plate are fixedly welded on two opposite ends of the bottom plate and the top plate respectively, a first sliding groove and a second sliding groove are formed in the front portions of the left ends of the first mounting plate and the second mounting plate respectively, a supporting mechanism is movably connected between the first mounting plate and the second mounting plate together, the front portions of the supporting mechanism are connected in the corresponding first sliding groove and the corresponding second sliding groove in a sliding manner, a pushing mechanism is fixedly mounted at the upper end of the bottom plate and is fixedly connected with the supporting mechanism together, two sliding plates and two fixing plates are fixedly connected at the upper end of the top plate, the fixing plates are positioned at the right side of the sliding plates, and a display mechanism is connected in the two sliding plates together in a sliding manner, the left end demountable installation of display mechanism has a projection board, the upper end fixed mounting of roof has a actuating mechanism, actuating mechanism's left end runs through the fixed plate and is located the slide and is in the same place with display mechanism threaded connection, the fixed welding of the upper end right part of bottom plate has a fixing base, the equal swing joint in both ends of fixing base has a traction lever, the traction lever is L type structure, and the left part of traction lever is through pivot and display mechanism swing joint, the right-hand member fixed mounting of roof has a handle.
Preferably, the supporting mechanism includes a backup pad and No. two backup pads, a backup pad and No. two backup pads all are provided with two, and the middle part of a backup pad and No. two backup pads is through pivot swing joint, two the lower part of a backup pad has a lower transfer line through bearing swing joint jointly, two the upper portion of No. two backup pads has an upper drive pole through bearing swing joint jointly, go up equal fixedly connected with spacing ring in both ends of drive pole and spacing ring.
Preferably, the upper portion of a backup pad and the lower part of No. two backup pads all through the pivot respectively with No. two mounting panels and a mounting panel swing joint, sliding connection is in a spout that corresponds respectively at the both ends of transfer line down, go up the both ends of transfer line and pass through sliding connection respectively in No. two spouts that correspond, the spacing ring all is located the outside of a mounting panel and No. two mounting panels.
Preferably, pushing mechanism includes electric telescopic handle, electric telescopic handle fixed connection is in the upper end of bottom plate, electric telescopic handle's one end fixed mounting has a connecting block, open at the middle part of connecting block has a spread groove, the connecting block passes through the middle part of spread groove fixed connection at transfer line down.
Preferably, actuating mechanism includes positive and negative motor and follows the driving wheel, positive and negative motor fixed mounting is in the upper end of roof, bull stick of output fixedly connected with of positive and negative motor, action wheel of one end fixedly connected with of bull stick, be provided with two from the driving wheel, and two threaded rods of the equal fixedly connected with in middle part from the driving wheel, two the one end of threaded rod all runs through the fixed plate that corresponds and is located the slide, two from the common transmission of driving wheel and action wheel and be connected with a drive belt.
Preferably, display mechanism includes the show board, the lower extreme both sides of show board all have a slider through pivot swing joint, the left end of slider is opened has one and is controlled the screw hole of break-over, the left end both sides of show board all open a mounting groove, the mounting groove is T type structure.
Preferably, the sliding block is connected in the sliding plate in a sliding mode, the threaded hole is in threaded connection with the corresponding threaded rod, and the two ends of the display board are movably connected with the traction rod through the rotating shaft.
Preferably, the rear end of the projection plate is fixedly welded with two mounting blocks, the structures of the mounting blocks are matched with the structures of the mounting grooves and correspond to the positions of the mounting grooves, and the lower end faces of the mounting blocks and the lower end faces of the projection plate are located on the same horizontal plane.
Preferably, the installation block is connected to the installation groove in a sliding manner to fixedly connect the projection plate with the display plate, and the cross section of the front end of the projection plate is larger than that of the front end of the display plate.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the threaded rod is in threaded connection with the driving wheel to drive the rotating rod to slide left and right in the sliding plate, the traction rod rotates to pull the display board to turn up and down, projection can be realized when the display board is perpendicular to the upper end face of the top plate, the display mechanism can be stored and folded when the display board is parallel to the upper end face of the top plate, the functions are various, the storage space is reduced, and the operation is convenient.
2. According to the invention, the mounting block is slidably connected in the mounting groove until the lower end of the mounting block is tightly attached to the lower groove wall of the mounting groove, the projection plate is fixedly connected with the display plate, the operation is convenient and fast, the mounting and dismounting can be fast carried out, the structure is simple through the arrangement of the T-shaped structure, and the stability of the projection plate in the use process is improved.
3. According to the invention, the connecting block is pulled to move by stretching the electric telescopic rod, and the upper included angle between the first supporting plate and the second supporting plate is controlled to change by sliding the lower transmission rod in the first sliding groove, so that the upper transmission rod is driven to slide in the second sliding groove, the distance between the bottom plate and the top plate is changed, the height adjustment is realized, the structure is compact, and the stability is strong.
Drawings
Fig. 1 is a schematic overall structure diagram of a novel stereoscopic holographic projector display device according to the invention;
FIG. 2 is a schematic diagram of the overall structure of a novel holographic stereographic projector display device according to the present invention;
FIG. 3 is a schematic connection diagram of a display mechanism of a novel holographic stereographic projector display device according to the present invention;
FIG. 4 is a schematic structural diagram of a supporting mechanism of a novel holographic stereographic projector display device according to the present invention;
FIG. 5 is a schematic structural diagram of a driving mechanism of a novel holographic stereographic projector display device according to the present invention;
FIG. 6 is a schematic structural diagram of a display mechanism of a novel holographic stereographic projector display device according to the present invention;
FIG. 7 is a schematic structural diagram of a pushing mechanism of a novel holographic stereographic projector display device according to the present invention;
fig. 8 is a schematic structural diagram of a projection plate of a novel stereoscopic holographic projector display device according to the present invention.
In the figure: 1. a base plate; 2. a top plate; 3. a first mounting plate; 4. a second mounting plate; 5. a first chute; 6. a second chute; 7. a support mechanism; 8. a pushing mechanism; 9. a slide plate; 10. a drive mechanism; 11. a display mechanism; 12. a projection plate; 13. a fixed seat; 14. a draw bar; 15. a fixing plate; 16. a handle; 71. a first support plate; 72. a second support plate; 73. a transmission rod is arranged; 74. a lower transmission rod; 75. a limiting ring; 81. an electric telescopic rod; 82. connecting blocks; 83. connecting grooves; 101. a positive and negative motor; 102. a rotating rod; 103. a driving wheel; 104. a driven wheel; 105. a threaded rod; 106. a transmission belt; 111. a display board; 112. a slider; 113. a threaded hole; 114. mounting grooves; 121. and (7) installing the block.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-8, a novel stereoscopic holographic projector display device comprises a bottom plate 1 and a top plate 2, wherein the bottom plate 1 and the top plate 2 have the same size, the bottom plate 1 and the top plate 2 are symmetrically distributed up and down, a first mounting plate 3 and a second mounting plate 4 are respectively fixedly welded on two sides of the opposite end of the bottom plate 1 and the top plate 2, a first sliding groove 5 and a second sliding groove 6 are respectively formed in the front part of the left end of the first mounting plate 3 and the front part of the second mounting plate 4, a supporting mechanism 7 is jointly and movably connected between the first mounting plate 3 and the second mounting plate 4, the front part of the supporting mechanism 7 is slidably connected in the corresponding first sliding groove 5 and second sliding groove 6, a pushing mechanism 8 is fixedly installed on the upper end of the bottom plate 1, the pushing mechanism 8 is fixedly connected with the supporting mechanism 7, two sliding plates 9 and two fixing plates 15 are fixedly connected to the upper end of the top plate 2, the fixing plate 15 is located on the right of the sliding plates 9, the two sliding plates 9 are connected with a display mechanism 11 in a sliding mode, the left end of the display mechanism 11 is detachably provided with a projection plate 12, the upper end of the top plate 2 is fixedly provided with a driving mechanism 10, the left end of the driving mechanism 10 penetrates through the fixing plate 15 and is located in the sliding plates 9 and connected with the display mechanism 11 in a threaded mode, the right portion of the upper end of the bottom plate 1 is fixedly welded with a fixing seat 13, two ends of the fixing seat 13 are movably connected with a traction rod 14, the traction rod 14 is of an L-shaped structure, the left portion of the traction rod 14 is movably connected with the display mechanism 11 through a rotating shaft, and the right end of the top plate 2 is fixedly provided with a handle 16.
The supporting mechanism 7 comprises a first supporting plate 71 and a second supporting plate 72, the first supporting plate 71 and the second supporting plate 72 are both provided with two supporting plates, the middle parts of the first supporting plate 71 and the second supporting plate 72 are movably connected through a rotating shaft, the lower parts of the first supporting plate 71 are jointly connected with a lower transmission rod 74 through a bearing, the upper parts of the second supporting plate 72 are jointly connected with an upper transmission rod 73 through a bearing, two ends of the upper transmission rod 73 and two ends of the limiting ring 75 are fixedly connected with a limiting ring 75, the upper transmission rod 73 and the lower transmission rod 74 are limited, and the upper transmission rod 73 and the lower transmission rod 74 are prevented from slipping from the first sliding groove 5 and the second sliding groove 6.
The upper portion of a backup pad 71 and the lower part of No. two backup pads 72 all through the pivot respectively with No. two mounting panels 4 and No. 3 swing joint of mounting panel, sliding connection is in corresponding spout 5 respectively at the both ends of lower drive rod 74, the both ends of going up drive rod 73 are respectively through sliding connection in corresponding spout 6 No. two, spacing ring 75 all is located the outside of mounting panel 3 and No. two mounting panels 4, the change of the distance between bottom plate 1 and roof 2 is realized through the contained angle change between backup pad 71 and No. two backup pads 72, realize display mechanism 11's altitude mixture control.
Pushing mechanism 8 includes electric telescopic handle 81, electric telescopic handle 81 fixed connection is in the upper end of bottom plate 1, electric telescopic handle 81's one end fixed mounting has a connecting block 82, open at the middle part of connecting block 82 has a spread groove 83, connecting block 82 passes through the middle part of spread groove 83 fixed connection at transfer line 74 down, make connecting block 82 promote down transfer line 74 slide in a spout 5 through electric telescopic handle 81 is flexible, realize the altitude mixture control of roof 2, the simple operation, compact structure, and high stability.
The sliding block 112 is connected in the sliding plate 9 in a sliding mode, the threaded hole 113 is in threaded connection with the corresponding threaded rod 105, the sliding block 112 slides in the sliding plate 9 through the threaded connection of the threaded hole 113 and the threaded rod 105, two ends of the display board 111 are movably connected with the traction rod 14 through a rotating shaft, and the display board 111 can be pushed to rotate to be parallel to the upper end face of the top plate 2 through the traction rod 14.
The rear end of the projection plate 12 is fixedly welded with two mounting blocks 121, the structure of the mounting blocks 121 is matched with the structure of the mounting grooves 114 and the positions of the mounting blocks are corresponding, and the lower end face of the mounting blocks 121 and the lower end face of the projection plate 12 are located on the same horizontal plane, so that the mounting is convenient, and the mounting is stable and reliable.
The mounting block 121 is slidably connected in the mounting groove 114 to fixedly connect the projection board 12 with the display board 111, and the front cross-sectional dimension of the projection board 12 is larger than that of the display board 111.
It should be noted that, in the holographic projection process, the electric telescopic rod 81 can be opened first, the connecting block 82 is pulled to move to a side close to the electric telescopic rod 81 by the contraction of the electric telescopic rod 81, the lower transmission rod 74 is driven to slide in the first sliding groove 5 at the moment, the included angle between the upper parts of the first supporting plate 71 and the second supporting plate 72 is reduced, the upper transmission rod 73 is driven to slide in the second sliding groove 6, the distance between the bottom plate 1 and the top plate 2 is increased, the position of the projection plate 12 is raised, the electric telescopic rod 81 can be closed until the height requirement of the projection plate 12 by a user is met, then the positive and negative motor 101 is opened, the rotating rod 102 is driven by the positive and negative motor 101 to rotate the driving wheel 103, the driven wheel 104 is driven to rotate by the transmission belt 106, the rotating rod 102 is driven to slide to the right in the sliding plate 9 by the threaded connection of the threaded rod 105 and the driving wheel 103, at the moment, the traction rod 14 rotates to pull the display board 111 to turn upwards until the display board 111 is perpendicular to the upper end face of the top plate 2, the positive and negative motor 101 is closed, the mounting block 121 is connected in the mounting groove 114 in a sliding manner until the lower end of the mounting block 121 is tightly attached to the lower groove wall of the mounting groove 114, the projection board 12 is fixedly connected with the display board 111, holographic projection can be used, mounting and dismounting are facilitated, quick mounting and dismounting of the projection board 12 can be realized, after the use is finished, rotation can be found through the positive and negative motor 101, the traction rod 14 rotates reversely, so that the upper end face of the display board 111 is parallel to the upper end of the top plate 2, the storage space is reduced, the distance between the top plate 2 and the bottom plate 1 is reduced by increasing the included angle between the upper parts of the first supporting plate 71 and the second supporting plate 72 through the extension of the electric telescopic rod 81, folding and storage space is small and high in flexibility, convenient adjustment, strong stability and wide popularization and application.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A novel three-dimensional holographic projector display device comprises a bottom plate (1) and a top plate (2), and is characterized in that: the size of bottom plate (1) and roof (2) is the same, and bottom plate (1) and roof (2) are upper and lower symmetric distribution, the opposition end both sides of bottom plate (1) and roof (2) fixed welding respectively have a mounting panel (3) and a mounting panel (4) No. two, the left end front portion of mounting panel (3) and mounting panel (4) has opened a spout (5) and a spout (6) No. two respectively, common swing joint has a supporting mechanism (7) between mounting panel (3) and mounting panel (4), and the anterior sliding connection of supporting mechanism (7) is in corresponding spout (5) and spout (6) No. two, the upper end fixed mounting of bottom plate (1) has a pushing mechanism (8), and pushing mechanism (8) and supporting mechanism (7) fixed connection are in the same place, the upper end of roof (2) fixedly connected with two slide boards (9) and two fixed plates (15), and fixed plate (15) are located slide board (9) right-hand, two common sliding connection has a display mechanism (11) in slide board (9), the left end demountable installation of display mechanism (11) has a projection board (12), the upper end fixed mounting of roof (2) has a actuating mechanism (10), the left end of actuating mechanism (10) runs through fixed plate (15) and is located slide board (9) and is in the same place with display mechanism (11) threaded connection, the upper end right part fixed welding of bottom plate (1) has a fixing base (13), the both ends of fixing base (13) all swing joint have a traction rod (14), traction rod (14) are L type structure, and the left part of traction rod (14) is through pivot and display mechanism (11) swing joint, the display mechanism comprises a top plate (2), a handle (16) is fixedly mounted at the right end of the top plate (2), a driving mechanism (10) comprises a positive and negative motor (101) and a driven wheel (104), the positive and negative motor (101) is fixedly mounted at the upper end of the top plate (2), the output end of the positive and negative motor (101) is fixedly connected with a rotating rod (102), one end of the rotating rod (102) is fixedly connected with a driving wheel (103), the driven wheel (104) is provided with two driving wheels, the middle parts of the two driven wheels (104) are fixedly connected with a threaded rod (105), one end of each threaded rod (105) penetrates through a corresponding fixed plate (15) and is positioned in a sliding plate (9), the two driven wheels (104) and the driving wheel (103) are jointly connected with a driving belt (106) in a transmission manner, the display mechanism (11) comprises a display plate (111), and two sliding blocks (112) are movably connected with the two sides of the lower end of the display plate (111) through rotating shafts, the left end of slider (112) is opened has screw hole (113) of controlling break-through, the left end both sides of show board (111) all opened one mounting groove (114), mounting groove (114) are T type structure, slider (112) sliding connection in slide (9) and screw hole (113) and threaded rod (105) threaded connection who corresponds, the both ends of show board (111) all are in the same place through pivot and traction lever (14) swing joint.
2. The novel holographically projected display device of claim 1, wherein: supporting mechanism (7) are including backup pad (71) and No. two backup pads (72), backup pad (71) and No. two backup pads (72) all are provided with two, and the middle part of backup pad (71) and No. two backup pads (72) is through pivot swing joint, two the lower part of backup pad (71) has a lower transfer line (74), two through bearing swing joint jointly the upper portion of No. two backup pads (72) has one to go up drive rod (73) through bearing swing joint jointly, go up drive rod (73) and spacing ring (75) equal fixedly connected with in both ends spacing ring (75).
3. The new type of holographic stereographic projector display device of claim 2, wherein: the upper portion of a backup pad (71) and the lower part of No. two backup pads (72) all through the pivot respectively with No. two mounting panels (4) and a mounting panel (3) swing joint, the both ends difference sliding connection of transfer line (74) is in a spout (5) that corresponds down, go up the both ends of transfer line (73) and pass through sliding connection respectively in No. two spouts (6) that correspond, spacing ring (75) all are located the outside of a mounting panel (3) and No. two mounting panels (4).
4. The novel holographically projected display device of claim 1, wherein: pushing mechanism (8) include electric telescopic handle (81), electric telescopic handle (81) fixed connection is in the upper end of bottom plate (1), the one end fixed mounting of electric telescopic handle (81) has a connecting block (82), open at the middle part of connecting block (82) has a spread groove (83), connecting block (82) are through spread groove (83) fixed connection at the middle part of transfer line (74) down.
5. The novel holographically projected display device of claim 1, wherein: the rear end fixed welding of projection board (12) has two installation pieces (121), the structure of installation piece (121) and the structure looks adaptation of mounting groove (114) and the position is corresponding, the lower terminal surface of installation piece (121) and the lower terminal surface of projection board (12) are located same horizontal plane.
6. The novel holographically projected display device of claim 5, wherein: the mounting block (121) is connected to the mounting groove (114) in a sliding manner to fixedly connect the projection plate (12) with the display plate (111), and the cross section size of the front end of the projection plate (12) is larger than that of the front end of the display plate (111).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010778128.6A CN111812935B (en) | 2020-08-05 | 2020-08-05 | Novel three-dimensional holographic projector display equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010778128.6A CN111812935B (en) | 2020-08-05 | 2020-08-05 | Novel three-dimensional holographic projector display equipment |
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| CN111812935A CN111812935A (en) | 2020-10-23 |
| CN111812935B true CN111812935B (en) | 2021-11-12 |
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| CN112826438A (en) * | 2020-12-31 | 2021-05-25 | 马春雪 | Inspection device for ophthalmic therapy of convenient inspection |
| CN113101618A (en) * | 2021-05-31 | 2021-07-13 | 潘琰 | Department of chest abdomen postoperative respiratory rehabilitation training ware for paediatrics |
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| CN101048698A (en) * | 2004-09-17 | 2007-10-03 | 保罗·柯乐比 | Screen assembly |
| CN204829178U (en) * | 2015-08-11 | 2015-12-02 | 姜锦权 | Device is erected to plain type projection curtain |
| CN106383430A (en) * | 2016-11-03 | 2017-02-08 | 郭洪礼 | Holographic image display system |
| CN107093335A (en) * | 2017-06-21 | 2017-08-25 | 林海 | One kind upset instructional terminal |
| CN210377890U (en) * | 2019-08-08 | 2020-04-21 | 大庆师范学院 | Multi-functional japanese teaching demonstration teaching aid |
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- 2020-08-05 CN CN202010778128.6A patent/CN111812935B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101048698A (en) * | 2004-09-17 | 2007-10-03 | 保罗·柯乐比 | Screen assembly |
| CN204829178U (en) * | 2015-08-11 | 2015-12-02 | 姜锦权 | Device is erected to plain type projection curtain |
| CN106383430A (en) * | 2016-11-03 | 2017-02-08 | 郭洪礼 | Holographic image display system |
| CN107093335A (en) * | 2017-06-21 | 2017-08-25 | 林海 | One kind upset instructional terminal |
| CN210377890U (en) * | 2019-08-08 | 2020-04-21 | 大庆师范学院 | Multi-functional japanese teaching demonstration teaching aid |
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