CN113409621B - Naked eye 3D projection equipment for geography teaching - Google Patents
Naked eye 3D projection equipment for geography teaching Download PDFInfo
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- CN113409621B CN113409621B CN202110582125.XA CN202110582125A CN113409621B CN 113409621 B CN113409621 B CN 113409621B CN 202110582125 A CN202110582125 A CN 202110582125A CN 113409621 B CN113409621 B CN 113409621B
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- 230000001681 protective effect Effects 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000000428 dust Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2085—Undercarriages with or without wheels comprising means allowing sideward adjustment, i.e. left-right translation of the head relatively to the undercarriage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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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
- G03B21/14—Details
- G03B21/145—Housing details, e.g. position adjustments thereof
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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
- G03B35/00—Stereoscopic photography
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
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Abstract
The invention relates to naked eye 3D projection equipment for geography teaching, which belongs to the technical field of projection equipment and comprises a transverse rail, a vertical moving mechanism, a naked eye 3D projection device, a transparent cover and a protective cover; the horizontal rail is arranged above a blackboard in a classroom, the vertical moving mechanism slides on the horizontal rail through a sliding block, the vertical moving mechanism vertically rotates relative to the sliding block, the transparent cover is arranged on the outer surface of the naked eye 3D projection device, the protective cover is arranged on the outer surface of the transparent cover, and the naked eye 3D projection device slides on the vertical moving mechanism through the protective cover; the invention provides naked eye 3D projection equipment for geography teaching, a teacher only needs to carry a naked eye 3D projection device in class, the naked eye 3D projection device is arranged on a vertical rail on a blackboard in class, the naked eye 3D projection device can move up and down left and right and the angle can be adjusted, and a weak light environment beneficial to projection can be created.
Description
Technical Field
The invention belongs to the technical field of projection equipment, and particularly relates to naked eye 3D projection equipment for geography teaching.
Background
The naked eye 3D technology utilizes the parallax of two eyes of a person, and can obtain a vivid three-dimensional image with space and depth without any auxiliary equipment such as 3D glasses, helmets and the like. Naked eye 3D projection equipment can design into style of calligraphy and wall-hanging two kinds for naked eye 3D both can directly stand and put subaerial, also can articulate on the wall, can furthest promote space utilization.
Because a large amount of natural phenomena, mountains and rivers, geological structures and ocean currents move in geography teaching, students cannot obtain visual feelings only through textbook contents and instruction of teachers, the existing naked eye 3D projection equipment is also applied to the teaching, and if the naked eye 3D projection equipment is applied to the geography teaching, the students can know course knowledge more visually through teaching of the natural geography phenomena and simulated geography phenomenon experiments displayed through a naked eye 3D technology in a classroom, but the existing naked eye 3D projection equipment is too high in manufacturing cost and too large in classroom coverage cost. Therefore, a naked eye 3D projection device for geography teaching is proposed.
Disclosure of Invention
The invention aims to solve the problems and provide a naked eye 3D projection device for geography teaching, which is simple in structure and reasonable in design.
The invention realizes the purpose through the following technical scheme:
a naked eye 3D projection device for geography teaching comprises a transverse rail, a vertical moving mechanism, a naked eye 3D projection device, a transparent cover and a protective cover;
the transverse rail and vertical moving mechanism is used for transverse and vertical movement of the naked eye 3D projection device;
the transparent cover is used for protecting the naked eye 3D projection device;
the protection cover is used for protecting the transparent cover and creating a weak light projection environment for the naked eye 3D projection device;
the transparent cover is arranged on the outer surface of the naked eye 3D projection device, the protective cover is arranged on the outer surface of the transparent cover, and the naked eye 3D projection device slides on the vertical moving mechanism through the protective cover.
As a further optimization scheme of the invention, the vertical moving mechanism comprises a vertical rail, a sliding seat and a mounting seat, the upper end of the vertical rail slides on the transverse rail through a sliding block, the sliding seat is installed on the vertical rail in a sliding mode, the mounting seat is fixedly installed on the sliding seat, and the naked eye 3D projection device is fixed on the mounting seat through a protective cover.
As a further optimization scheme of the invention, the two ends of the sliding seat are both provided with an arc hole and a fixing hole, and the mounting seat passes through the arc hole and the fixing hole through two groups of fastening knobs at the two ends and is fixed on the sliding seat.
As a further optimization scheme of the invention, the fixed hole and the arc hole are concentric, and the mounting seat rotates on the sliding seat by taking the fixed hole as the center of circle.
As a further optimization scheme of the invention, the protective cover comprises a surrounding edge and an installation fixture block, the surrounding edge is positioned on the periphery of the transparent cover, the installation fixture block is fixedly positioned at the cross-shaped intersection of the surrounding edge extending to the transparent cover, and the installation fixture block and the installation seat are mutually clamped and fixed.
As a further optimized scheme of the invention, the protective cover further comprises four groups of triangular baffles and a closing cover, the four groups of baffles are respectively and rotatably arranged on the four sides of the surrounding edge, and when the four groups of baffles are overlapped, the closing cover is fixed at the overlapped position among the four groups of baffles.
As a further optimization scheme of the invention, the baffle plate comprises a trapezoidal plate and two groups of triangular plates, the trapezoidal plate and the two groups of triangular plates form an equilateral triangle in an initial state, and the two groups of triangular plates form a rectangle with the trapezoidal plate when the two groups of triangular plates rotate outwards through pin shafts until oblique edges coincide with the oblique edges of the trapezoidal plate.
As a further optimization scheme of the invention, the overlapped right-angle edges of the two groups of the set squares are provided with fan-shaped grooves, the inside of each fan-shaped groove is provided with a folding fan blade, the circle center end of the folding fan blade is fixed in the fan-shaped groove, and the free end of the folding fan blade and the free end of the adjacent folding fan blade are mutually attracted.
As a further optimization scheme of the invention, the inner side surface of the baffle is provided with a continuous and uninterrupted protruding structure, and the protruding structure is one or a combination of a semicircular strip and a triangular strip.
As a further optimization scheme of the invention, two groups of dust-blocking curtains which are symmetrically attracted with each other are arranged on the transverse rail and the vertical rail, each dust-blocking curtain is composed of a plurality of linearly arranged curtain lattices, and the upper end of each dust-blocking curtain is provided with a mounting strip.
The invention has the beneficial effects that:
1. the invention provides naked eye 3D projection equipment for geography teaching, a teacher only needs to carry a naked eye 3D projection device in class, and the naked eye 3D projection device is arranged on a vertical rail on a blackboard in class and can move left and right up and down and adjust the angle.
2. When the projection device is not used, the transparent cover and the naked eye 3D projection device are protected by the protective cover, and when the projection device is used, the protective cover is opened and is enclosed around the transparent cover in front of the naked eye 3D projection device, so that a weak light environment is created, and projection is facilitated, and students can watch the projection more clearly.
Drawings
FIG. 1 is a schematic diagram of a use state of a naked eye 3D projection device for geography teaching, provided by the invention;
FIG. 2 is a schematic view of a naked eye 3D projection device of the naked eye 3D projection equipment for geography teaching according to the invention;
FIG. 3 is a completely enclosed structure diagram of a protective cover of the naked eye 3D projection device for geography teaching according to the invention;
FIG. 4 is a half-open structure diagram of a protective cover of the naked eye 3D projection device for geography teaching, provided by the invention;
FIG. 5 is a fully opened structure diagram of a protective cover of the naked eye 3D projection device for geography teaching according to the invention;
FIG. 6 is a rear view of a protective cover of the naked eye 3D projection device for geography teaching according to the invention;
FIG. 7 is a schematic diagram of a protruding structure of a baffle surface of a naked eye 3D projection device for geography teaching according to the invention;
FIG. 8 is a schematic view of a dust curtain of the naked eye 3D projection device for geography teaching according to the invention.
In the figure: 1. a transverse rail; 11. a curtain lattice; 12. mounting a bar; 2. a vertical moving mechanism; 21. a vertical rail; 22. a sliding seat; 23. a mounting seat; 24. an arc hole; 25. a fixing hole; 26. fastening a knob; 3. a naked eye 3D projection device; 4. a transparent cover; 5. a protective cover; 51. surrounding edges; 52. mounting a clamping block; 53. a baffle plate; 531. a trapezoidal plate; 532. a set square; 533. a pin shaft; 534. a sector groove; 535. folding the fan blades; 54. closing the cover; 55. and (4) a protruding structure.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1, the naked eye 3D projection apparatus for geography teaching of this embodiment includes a naked eye 3D projection device 3, a cross rail 1 and a vertical moving mechanism 2 for horizontal and vertical movement of the naked eye 3D projection device 3, a transparent cover 4 for protecting the naked eye 3D projection device 3, and a protective cover 5 for protecting the transparent cover 4 and creating a weak projection environment for the naked eye 3D projection device 3, the naked eye 3D projection device 3 adopts a holographic 3D projection suspension naked eye instrument lamp, a fan rotates to form a screen which can be imaged in the air, the cross rail 1 is installed above a classroom blackboard, the vertical moving mechanism 2 slides on the cross rail 1 through a sliding block, the vertical moving mechanism 2 rotates vertically relative to the sliding block, the transparent cover 4 is disposed on the outer surface of the naked eye 3D projection device 3, bore hole 3D projection arrangement 3's control box passes translucent cover 4 and fixes on safety cover 5, safety cover 5 sets up the surface at translucent cover 4, bore hole 3D projection arrangement 3 slides on vertical moving mechanism 2 through safety cover 5, when using, rotate vertical moving mechanism 2 from cross rail 1 ninety degrees, then fix bore hole 3D projection arrangement 3 on vertical moving mechanism 2 through safety cover 5, insert the power cord on the socket on vertical moving mechanism 2, then expand safety cover 5 completely, build the projection environment of a weak light outside bore hole 3D projection arrangement 3, can pass through cell-phone conveying or USB interface transmission control box of inserting control box then the projection with geographical teaching content, when the fan rotates, teaching content can appear in the fan rotation region.
As shown in fig. 2, the naked eye 3D projection apparatus for geography teaching of this embodiment, the vertical moving mechanism 2 includes a vertical rail 21, a sliding seat 22, and a mounting seat 23, the upper end of the vertical rail 21 slides on the horizontal rail 1 through a sliding block, the sliding seat 22 is slidably mounted on the vertical rail 21, the mounting seat 23 is fixedly mounted on the sliding seat 22, the naked eye 3D projection apparatus 3 is fixed on the mounting seat 23 through a protection cover 5, circular arc holes 24 and fixing holes 25 are respectively formed at both ends of the sliding seat 22, the mounting seat 23 passes through the circular arc holes 24 and the fixing holes 25 through two sets of fastening knobs 26 at both ends and is fixed on the sliding seat 22, the fixing holes 25 and the circular arc holes 24 are concentric, the mounting seat 23 rotates on the sliding seat 22 with the fixing holes 25 as a circle center, when the starting position is set, the naked eye 3D projection apparatus 3 and the vertical rail 21 are parallel to each other, the two sets of fastening knobs 26 are located on the same vertical straight line, when an angle needs to be adjusted, the fastening knob 26 located in the circular arc hole 24 slides upward along the circular arc hole 24 to change the mounting seat 23 so that the mounting seat 23 can be inclined, an optimal projection angle of a student can be adjusted within a certain range, and the optimal projection angle for watching students.
As shown in fig. 3-7, in the naked eye 3D projection apparatus for geography teaching of this embodiment, the protection cover 5 includes a surrounding edge 51 and an installation fixture block 52, the surrounding edge 51 is located at the periphery of the transparent cover 4, the installation fixture block 52 is fixedly located at a cross-shaped intersection where the surrounding edge 51 extends to the transparent cover 4, the installation fixture block 52 is fixedly engaged with the installation seat 23, thereby fixing the transparent cover 4 and the whole naked eye 3D projection apparatus 3 by fixing the installation fixture block 52, and the control box of the naked eye 3D projection apparatus 3 is fixedly connected with the installation fixture block 52.
As shown in fig. 3, the protective cover 5 further includes four sets of triangular baffles 53 and a closing cover 54, the four sets of baffles 53 are located in front of the transparent cover 4 to protect the transparent cover 4 and the naked-eye 3D projection device 3, the four sets of baffles 53 are respectively rotatably arranged on four sides of the surrounding edge 51, the rotating range of the baffles 53 is 0 to 90 degrees, when the four sets of baffles 53 are overlapped, the closing cover 54 is fixed at the overlapped position in the middle of the four sets of baffles 53, a quarter of convex rings are arranged on the four sets of baffles 53, a groove matched with the convex rings is arranged at the lower end of the closing cover 54 to just fix the four sets of baffles 53, and a handle is further arranged at the upper end of one surrounding edge 51 to facilitate the teacher to carry the teacher.
As shown in fig. 4, the baffle 53 includes a trapezoidal plate 531 and two sets of triangular plates 532, the trapezoidal plate 531 and the two sets of triangular plates 532 form an equilateral triangle in an initial state, the two sets of triangular plates 532 rotate outwards through a pin 533, when the baffle 53 is turned up to form a proper angle with the transparent cover 4 in use, then the two sets of triangular plates 532 are respectively rotated towards two sides, so that the inclined sides of the triangular plates 532 coincide with the inclined sides of the trapezoidal plate 531, the two sets of triangular plates 532 and the trapezoidal plate 531 form a rectangle, as shown in fig. 5, the right-angle sides where the two sets of triangular plates 532 coincide are provided with fan-shaped grooves 534, black folding fan blades 535 are arranged inside the fan-shaped grooves 534, the circle center ends of the folding fan blades 535 are fixed in the fan-shaped grooves 534, the free ends of the folding fan blades 535 attract the free ends of the adjacent folding fan blades 535, in order to form a full enclosure structure, after the four-side baffle 53 forms a rectangle, the folding fan blades 535 are unfolded from the fan-shaped grooves 534, the adjacent folding fan blades 535 are fixed to each other through a magnetic attraction or fixing structure, so that the adjacent rectangular baffles 535 are covered, and a dark projection area is formed in front of the 3D projection device 3.
As shown in fig. 7, a continuous black protruding structure 55 is provided on the inner surface of the baffle 53, the protruding structure 55 is made of silica gel, and the protruding structure 55 is one or a combination of a semicircular strip with a diameter of 1-5cm and a triangular strip with a length of 2-10cm and a height of 1-5 cm. The included angle between the baffle plate 53 and the transparent cover 4 is divided into 30 degrees, 60 degrees and 90 degrees, a brightness meter is placed at the center position of the transparent cover 4, the brightness of the combination of the a and the convex structures 55 which are semicircular strips, the b and the convex structures 55 which are triangular strips, and the c and the convex structures 55 which are semicircular strips and triangular strips are respectively measured, the measurement result a < c < b, and the convex structures 55 are preferably semicircular strips with continuous and uninterrupted diameters of 1-5 cm.
As shown in fig. 8, the bore hole 3D projection equipment for geography teaching of this embodiment all is equipped with the dirt blocking curtain of two sets of mutual symmetry attractions on horizontal rail 1 and the perpendicular rail 21, and the dirt blocking curtain has a plurality of linear arrangement's curtain check 11 to constitute, and the upper end of dirt blocking curtain is equipped with mounting bar 12, and when sliding does not appear on the track of horizontal rail 1 and perpendicular rail 21, the dirt blocking curtain coincides naturally, can prevent to advance the dust in the track, and the dirt blocking curtain adopts the design of the curtain check 11 of symmetry, does not influence the slip moreover.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The naked eye 3D projection equipment for geography teaching is characterized by comprising a transverse rail (1), a vertical moving mechanism (2), a naked eye 3D projection device (3), a transparent cover (4) and a protective cover (5);
the transverse rail (1) and the vertical moving mechanism (2) are used for transversely and vertically moving the naked eye 3D projection device (3);
a transparent cover (4) for protecting the naked eye 3D projection device (3);
the protection cover (5) is used for protecting the transparent cover (4) and creating a weak light projection environment for the naked eye 3D projection device (3);
the horizontal rail (1) is installed above a blackboard in a classroom, the vertical moving mechanism (2) slides on the horizontal rail (1) through a sliding block, the vertical moving mechanism (2) vertically rotates relative to the sliding block, the transparent cover (4) is arranged on the outer surface of the naked eye 3D projection device (3), the protective cover (5) is arranged on the outer surface of the transparent cover (4), and the naked eye 3D projection device (3) slides on the vertical moving mechanism (2) through the protective cover (5);
the vertical moving mechanism (2) comprises a vertical rail (21), a sliding seat (22) and a mounting seat (23), the upper end of the vertical rail (21) slides on the transverse rail (1) through a sliding block, the sliding seat (22) is installed on the vertical rail (21) in a sliding mode, the mounting seat (23) is fixedly installed on the sliding seat (22), and the naked eye 3D projection device (3) is fixed on the mounting seat (23) through a protection cover (5);
the protective cover (5) comprises a surrounding edge (51) and an installation clamping block (52), the surrounding edge (51) is located on the periphery of the transparent cover (4), the installation clamping block (52) is fixedly located at the cross position where the surrounding edge (51) extends to the transparent cover (4), and the installation clamping block (52) and the installation seat (23) are mutually clamped and fixed;
the protective cover (5) further comprises four groups of triangular baffles (53) and a closing cover (54), the four groups of baffles (53) are respectively and rotatably arranged on the four sides of the surrounding edge (51), and when the four groups of baffles (53) are overlapped, the closing cover (54) is fixed at the overlapped position of the middles of the four groups of baffles (53);
the baffle (53) comprises a trapezoidal plate (531) and two groups of triangular plates (532), the trapezoidal plate (531) and the two groups of triangular plates (532) form an equilateral triangle in an initial state, the two groups of triangular plates (532) rotate outwards through a pin shaft (533) until the oblique edges coincide with the oblique edges of the trapezoidal plate (531), and the two groups of triangular plates (532) and the trapezoidal plate (531) form a rectangle;
the right-angle sides of the two sets of the triangular plates (532) which are overlapped are provided with fan-shaped grooves (534), the inside of each fan-shaped groove (534) is provided with a folding fan blade (535), the circle center end of each folding fan blade (535) is fixed in the corresponding fan-shaped groove (534), and the free end of each folding fan blade (535) is mutually attracted with the free end of the adjacent folding fan blade (535).
2. The naked-eye 3D projection device for geography teaching according to claim 1, wherein the two ends of the sliding seat (22) are both provided with an arc hole (24) and a fixing hole (25), and the mounting seat (23) is fixed on the sliding seat (22) through two groups of fastening knobs (26) at the two ends penetrating through the arc hole (24) and the fixing hole (25).
3. The naked eye 3D projection device for geography teaching according to claim 2, wherein the fixing hole (25) is concentric with the circular arc hole (24), and the mounting seat (23) rotates on the sliding seat (22) with the fixing hole (25) as the center.
4. The naked eye 3D projection device for geography teaching according to claim 1, wherein the inner side surface of the baffle (53) is provided with a continuous uninterrupted protruding structure (55), and the protruding structure (55) is one or two of a semicircular strip and a triangular strip.
5. The naked eye 3D projection device for geography teaching according to claim 1, wherein the transverse rail (1) and the vertical rail (21) are respectively provided with two groups of dust blocking curtains which are symmetrically attracted to each other, each dust blocking curtain is composed of a plurality of linearly arranged curtain lattices (11), and the upper end of each dust blocking curtain is provided with a mounting strip (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110582125.XA CN113409621B (en) | 2021-05-27 | 2021-05-27 | Naked eye 3D projection equipment for geography teaching |
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| CN202110582125.XA CN113409621B (en) | 2021-05-27 | 2021-05-27 | Naked eye 3D projection equipment for geography teaching |
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| CN113409621A CN113409621A (en) | 2021-09-17 |
| CN113409621B true CN113409621B (en) | 2022-11-15 |
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| CN114393597B (en) * | 2022-02-23 | 2024-06-14 | 深圳市精壹机电设备有限公司 | Clamping device with protection structure for electric automation |
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| JP2007032654A (en) * | 2005-07-25 | 2007-02-08 | Canon Inc | Apparatus attachment device, adjustment tool, and imaging device with adjustment mechanism |
| CN104143272A (en) * | 2014-07-24 | 2014-11-12 | 西安交通大学 | Stereoscopic image display machine based on interactive teaching |
| CN205504410U (en) * | 2016-03-12 | 2016-08-24 | 天津智信数字科技有限公司 | Three -dimensional camera equipment's of 3D automatic adjustment system |
| CN205655987U (en) * | 2016-04-21 | 2016-10-19 | 安徽凯盛众普新光源有限公司 | Light guide plate checkout stand of angularly adjustable |
| CN107798925A (en) * | 2017-12-06 | 2018-03-13 | 企创创（广州）科技有限公司 | A kind of intelligent tutor auxiliary platform equipment |
| CN108682202A (en) * | 2018-04-27 | 2018-10-19 | 伍伟权 | A kind of literal arts line holographic projections teaching equipment |
| CN211624788U (en) * | 2020-02-18 | 2020-10-02 | 山东百特展览工程有限公司 | Naked eye 3D all-in-one machine for mechanical teaching |
| CN111554132A (en) * | 2020-05-18 | 2020-08-18 | 许昌学院 | Multimedia teaching selection projection instrument |
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