CN110345354A - A kind of Multifunctional projector based on Internet of Things - Google Patents

A kind of Multifunctional projector based on Internet of Things Download PDF

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Publication number
CN110345354A
CN110345354A CN201910527838.9A CN201910527838A CN110345354A CN 110345354 A CN110345354 A CN 110345354A CN 201910527838 A CN201910527838 A CN 201910527838A CN 110345354 A CN110345354 A CN 110345354A
Authority
CN
China
Prior art keywords
projector
holder
fixing pipe
place position
internet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910527838.9A
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Chinese (zh)
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CN110345354B (en
Inventor
彭国远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sichuan Xincheng Precision Electronics Co ltd
Original Assignee
Anhui Xincheng Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Xincheng Technology Co Ltd filed Critical Anhui Xincheng Technology Co Ltd
Priority to CN201910527838.9A priority Critical patent/CN110345354B/en
Publication of CN110345354A publication Critical patent/CN110345354A/en
Application granted granted Critical
Publication of CN110345354B publication Critical patent/CN110345354B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/18Heads with mechanism for moving the apparatus relatively to the stand
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/14Details
    • G03B21/16Cooling; Preventing overheating
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Abstract

The present invention relates to porjector technology fields, and in particular to a kind of Multifunctional projector based on Internet of Things, including two projectors, fixation kit, ear block, holder, limiting device, driving device.Beneficial effects of the present invention: by the way that two projectors are arranged, the project content of major part is subjected to seamless segmentation, individually projection, project content can be watched clear and completely in this way, in addition driving device is set, two holders are driven to be rotated by driving device, view field's joining place gap of two projectors is set to be able to carry out adjustment, avoid gap excessive, influence drop shadow effect, holder is set, by the way that projector is placed in place position, projector can be protected at least to some extent, and it is provided with radiating groove, the heat generated after projector long-time use is distributed in time.

Description

A kind of Multifunctional projector based on Internet of Things
Technical field
The present invention relates to porjector technology fields, and in particular to a kind of Multifunctional projector based on Internet of Things.
Background technique
Projector be it is a kind of the profile of workpiece is amplified using optical element, and the optics instrument being projected on shadow screen Device.It can make profile measurement with transmitted light, it is also possible to the surface shape and observation piece surface of reflected light measurement blind hole.Projection The particularly suitable measurement complex outline of instrument and tiny workpiece, as clock and watch part, punching parts, electronic component, template, mold, screw thread, Gear and molding cutter etc., checkability is high, easy to use;It is widely used in measuring room, workshop, to instrument and meter and clock Table row industry is especially suitable.Also known as projector is a kind of equipment that can be projected image or video on curtain, can be by not The same computer of interface together, VCD, DVD, BD, game machine, DV etc., which are connected, plays corresponding vision signal.
Projector is now widely used for family, office, school and public place of entertainment, according to working method difference, has The different types such as CRT, LCD, DLP.
In the internet of things era, Internet of Things is equally may be implemented in projector, is connect by computer with projector, on projector Project content is controlled by computer, but in practical projection operation, it is possible that following situation: single projector into When row projection operation, since view field's area of projector limits, causes the content of projection to be not easy clearly to be watched, project Effect is undesirable, is divided into multiple small fragments at this time or by project content, individually carries out projecting or using computer, pass through Computer is connect with projector, project content is played out at webpage form (pulled down project content by computer, Amplification, similar web browsing operations), the drop shadow effect of both settling modes is all undesirable, it brings inconvenience to the quality of projection, That is, watching project content inconvenience.
Summary of the invention
It is an object of the invention to overcome problems of the prior art, a kind of multi-functional throwing based on Internet of Things is provided Shadow instrument, it may be implemented to make two projectors while be projected, and increase drop shadow effect.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved by the following technical solutions:
A kind of Multifunctional projector based on Internet of Things, including two projectors, further includes:
Fixation kit, the fixation kit include a substrate, two transverse slats, a vertical plate, and the substrate is connected to be put vertically It sets on face, two transverse slats are opposed to be set on substrate up and down, and the vertical plate is connected to vertically on two transverse slats;
Ear block, the ear block set there are two and are opposed to be fixed in vertical plate upper and lower ends up and down respectively;
Holder, there are two the holder is set, and one end is equipped with one first free bearing, on two holders First free bearing is pivotally connected with two ear blocks respectively, the holder far from first free bearing one end outer wall be equipped with it is being placed for projector, The place position of blind hole form;
Limiting device, the limiting device are used for projector limit in place position;
Driving device, the driving device is for driving two holders synchronous with ear block articulated section opposite along the first free bearing Rotation.
Further, the holder is equipped with radiating groove be connected to place position, nicked form.
Further, the driving device includes:
Cylinder, the cylinder are mounted on fixation kit;
Floating junction, the floating junction are drivingly connected on cylinder;
Hinge-rod, there are two the hinge-rod is set, one end is pivotally connected with the floating junction both ends respectively;
Second free bearing, second free bearing are set there are two being respectively and fixedly connected on two holder opposite side outer walls, two institutes The hinge-rod other end is stated to be pivotally connected with two the second free bearings respectively.
Further, the limiting device includes:
Fixing pipe, the fixing pipe are tubular structure closed at one end, are arranged in pairs and its closed end is right respectively It should be fixed in two holder opposite sides;
Fixture block, the coaxial slide fit of fixture block are set in fixing pipe, are made of magnetic conductive material;
Bar, the bar are coaxially fixed on fixture block and are pierced by fixing pipe closed end, the corresponding fixed duct occlusion End is equipped with the through-hole passed through for bar slide fit, and the bar is pierced by fixing pipe one end and pierces into holder to place position, and its Circumferential surface against the projector towards on one end face of place position oral area, by projector limit in place position;
Elastic component, the elastic component are set in fixing pipe, are used to support the fixture block, the bar is driven to pierce into placement In storehouse;
Electromagnet, the electromagnet are set in fixing pipe, and magnetism is generated when being powered, and drive the fixture block towards its movement.
Further, the elastic component including but not limited to uses spring.
Further, the elastic component is made of non-magnetic material.
Beneficial effects of the present invention: by the way that two projectors are arranged, carrying out seamless segmentation for the project content of major part, Individually projection, such project content can be watched clear and completely, driving device are in addition arranged, is driven by driving device Two holders are rotated, and so that view field's joining place gap of two projectors is able to carry out adjustment, are avoided gap excessive, Influence drop shadow effect, be arranged holder, by the way that projector is placed in place position, can at least to some extent to projector into Row protection, and it is provided with radiating groove, the heat generated after projector long-time use is distributed in time, setting limit dress It sets, fixture block is supported by elastic component, pierces into bar in place position, and make its circumferential surface against projector end face, on the one hand Projector is limited, makes projector is firm to be placed in place position, on the other hand, not will cause extruding to projector Wound, in addition limiting device is set as being powered by electromagnet, generates magnetism, makes fixture block under magnetic-adsorption effect, driving bar is remote From holder, bar is pulled manually without using person, keeps operation easier, while realizing automation to a certain extent.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will be described below to embodiment required Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached Figure.
Fig. 1 is schematic perspective view of the invention;
Fig. 2 is the schematic diagram of Fig. 1 neutral body structure depression angle;
Fig. 3 is Fig. 1 neutral body structural blast schematic diagram;
In attached drawing, component representated by each label is as follows:
1- projector, 2- substrate, 3- transverse slat, 4- vertical plate, 5- ear block, 6- holder, the first free bearing of 7-, 8- place position, 9- Radiating groove, 10- cylinder, 11- floating junction, 12- hinge-rod, the second free bearing of 13-, 14- fixing pipe, 15- fixture block, 16- bar, 17- elastic component, 18- electromagnet.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below will In conjunction with the attached drawing in the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention Example, all other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The scope of protection of the invention.
A kind of Multifunctional projector based on Internet of Things as shown in Figs. 1-3, including two projectors 1, further includes:
Fixation kit, the fixation kit include 2, two transverse slats 3 of a substrate, a vertical plate 4, and the substrate 2 is connected to perpendicular On straight placed side, two about 3 transverse slats are opposed to be set on substrate 2, and the vertical plate 4 is connected on two transverse slats 3 vertically;
Ear block 5, the ear block 5 set there are two and are opposed to be fixed in 4 upper and lower ends of vertical plate up and down respectively;
Holder 6, there are two the holder 6 is set, and one end is equipped with one first free bearing 7, two holders 6 On the first free bearing 7 be pivotally connected respectively with two ear blocks 5, the holder 6 is equipped with far from 7 one end outer wall of the first free bearing for projector 1 place position 8 place, blind hole form;
Limiting device, the limiting device are used for the limit of projector 1 in place position 8;
Driving device, the driving device are synchronous with 5 articulated section of ear block along the first free bearing 7 for driving two holders 6 It relatively rotates.
The holder 6 is equipped with radiating groove 9 be connected to place position 8, nicked form.
The driving device includes:
Cylinder 10, the cylinder 10 are mounted on fixation kit;
Floating junction 11, the floating junction 11 are drivingly connected on cylinder 10;
Hinge-rod 12, there are two the hinge-rod 12 is set, one end is pivotally connected with 11 both ends of floating junction respectively;
Second free bearing 13, second free bearing 13 are set there are two being respectively and fixedly connected on two holders, 6 opposite side outer wall, and two A 12 other end of the hinge-rod is pivotally connected with two the second free bearings 13 respectively.
The limiting device includes:
Fixing pipe 14, the fixing pipe 14 are tubular structure closed at one end, in pairs setting and its closed end point It Dui Ying not be fixed in two 6 opposite sides of holder;
Fixture block 15, the coaxial slide fit of the fixture block 15 are set in fixing pipe 14, are made of magnetic conductive material;
Bar 16, the bar 16 is coaxially fixed on fixture block 15 and is pierced by 14 closed end of fixing pipe, corresponding described solid Determine 14 closed end of pipe and be equipped with the through-hole passed through for 16 slide fit of bar, the bar 16 is pierced by 14 one end of fixing pipe and pierces into holder 6 in place position 8, and its circumferential surface against the projector 1 towards on 8 oral area of place position, one end face, the projector 1 is limited In place position 8;
Elastic component 17, the elastic component 17 are set in fixing pipe 14, are used to support the fixture block 15, drive the bar 16 pierce into place position 8;
Electromagnet 18, the electromagnet 18 are set in fixing pipe 14, and magnetism is generated when being powered, drives 15 court of fixture block It is moved.
The elastic component 17 including but not limited to uses spring, and spring is easily purchased and replaced.
The elastic component 17 is made of non-magnetic material, and when electromagnet being avoided to be powered, the influence of deformation is caused to elastic component.
The present invention is when in use: when installation projector, connection electromagnet power supply, electromagnet are powered first, generate magnetic, drive Dynamic fixture block makes bar remove place position, is at this time again put into projector by the oral area of place position towards the sliding of box direction is located remote from, It is then turned off power supply, electromagnet power-off loses magnetism, and under the action of the spring, driving bar penetrates in place position fixture block, circumferential surface Against projector towards an end face of place position oral area, make projector is firm to be placed in place position, the linking of adjustment view field When locating gap size, starting cylinder, cylinder movement, driving hinge-rod movement first, and holder is driven to cut with scissors along ear block and first The rotation of seat articulated section, two holders are synchronously relatively close, and (or separate, concrete condition regards the weight in two projector regions Depending on folded range), when view field's joining place gap of two projectors disappears substantially, cylinder stopping movement, two at this time The project content of the view field of projector forms a complete project content so that it is convenient to the viewing of project content, by It is synchronous relative rotation in two holders, saves the time in adjustment view field gap, improve efficiency.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification, It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only It is limited by claims and its full scope and equivalent.

Claims (6)

1. a kind of Multifunctional projector based on Internet of Things, including two projectors (1), which is characterized in that further include:
Fixation kit, the fixation kit include a substrate (2), two transverse slats (3), a vertical plate (4), substrate (2) connection On vertical placed side, two transverse slats (3) are opposed to be set on substrate (2) up and down, and the vertical plate (4) is connected to two vertically On a transverse slat (3);
Ear block (5), the ear block (5) set there are two and are opposed to be fixed in vertical plate (4) upper and lower ends up and down respectively;
Holder (6), there are two the holder (6) sets, and one end is equipped with one first free bearing (7), two placements The first free bearing (7) on box (6) is pivotally connected with two ear blocks (5) respectively, and the holder (6) is far from outside the first free bearing (7) one end Wall is equipped with place position (8) place for projector (1), blind hole form;
Limiting device, the limiting device are used for projector (1) limit in place position (8);
Driving device, the driving device are same along the first free bearing (7) and ear block (5) articulated section for driving two holders (6) Step relatively rotates.
2. a kind of Multifunctional projector based on Internet of Things according to claim 1, which is characterized in that the holder (6) it is equipped with radiating groove (9) be connected to place position (8), nicked form.
3. a kind of Multifunctional projector based on Internet of Things according to claim 1, which is characterized in that the driving device Include:
Cylinder (10), the cylinder (10) are mounted on fixation kit;
Floating junction (11), the floating junction (11) are drivingly connected on cylinder (10);
Hinge-rod (12), there are two the hinge-rod (12) sets, one end is pivotally connected with the floating junction (11) both ends respectively;
Second free bearing (13), second free bearing (13) set there are two being respectively and fixedly connected on two holder (6) opposite side outer walls, Two hinge-rod (12) other ends are pivotally connected with two the second free bearings (13) respectively.
4. a kind of Multifunctional projector based on Internet of Things according to claim 1, which is characterized in that the limiting device Include:
Fixing pipe (14), the fixing pipe (14) are tubular structure closed at one end, in pairs setting and its closed end point It Dui Ying not be fixed in two holder (6) opposite sides;
Fixture block (15), the coaxial slide fit of the fixture block (15) are set in fixing pipe (14), are made of magnetic conductive material;
Bar (16), the bar (16) are coaxially fixed on fixture block (15) and are pierced by fixing pipe (14) closed end, corresponding institute It states fixing pipe (14) closed end and is equipped with the through-hole passed through for bar (16) slide fit, the bar (16) is pierced by fixing pipe (14) one Holder (6) is pierced into in place position (8) in end, and its circumferential surface against the projector (1) towards one end face of place position (8) oral area On, by the projector (1) limit in place position (8);
Elastic component (17), the elastic component (17) are set in fixing pipe (14), are used to support the fixture block (15), described in driving Bar (16) pierces into place position (8);
Electromagnet (18), the electromagnet (18) are set in fixing pipe (14), and magnetism is generated when being powered, drives the fixture block (15) towards its movement.
5. a kind of Multifunctional projector based on Internet of Things according to claim 4, which is characterized in that the elastic component (17) spring is including but not limited to used.
6. a kind of Multifunctional projector based on Internet of Things according to claim 4 or 5, which is characterized in that the elasticity Part (17) is made of non-magnetic material.
CN201910527838.9A 2019-06-18 2019-06-18 Multifunctional projector based on Internet of things Expired - Fee Related CN110345354B (en)

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Application Number Priority Date Filing Date Title
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CN110345354B CN110345354B (en) 2021-09-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110895379A (en) * 2019-11-22 2020-03-20 江苏盐西世纪教育产业项目开发有限公司 Multi-camera multi-projector structured light experimental device

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GB481198A (en) * 1936-09-10 1938-03-08 George Carwardine Improvements in equipoising mechanism
EP0390010A1 (en) * 1989-03-24 1990-10-03 Kabushiki Kaisha Topcon Stereoscopic image apparatus
CN203825352U (en) * 2014-04-15 2014-09-10 Gqg股份有限公司 Projector storage device
CN204009328U (en) * 2014-05-23 2014-12-10 广州艾恩电子有限公司 Portable translucent equipment
US9372386B2 (en) * 2012-04-10 2016-06-21 Seiko Epson Corporation Projection system, support, and image display method
CN206555654U (en) * 2017-01-09 2017-10-13 东莞市瀚艺实业有限公司 A kind of rotating camera support base
CN206904530U (en) * 2017-05-27 2018-01-19 苏州长平视听设备有限公司 A kind of projector rack with parcel tray
CN207020451U (en) * 2017-06-28 2018-02-16 歌尔科技有限公司 Projection arrangement and projection robot
CN107833498A (en) * 2016-09-16 2018-03-23 淄博夸克医药技术有限公司 The projecting apparatus that a kind of management teaching uses
CN107990127A (en) * 2018-01-09 2018-05-04 贾凡瑾 A kind of Chinese language of twin-lens dual-projection superposition reads aloud subtitle projection plate
CN207584295U (en) * 2017-12-14 2018-07-06 吴津青 A kind of electronic projection apparatus mounting bracket
CN108713862A (en) * 2018-06-26 2018-10-30 安徽六启教育软件科技有限公司 Teaching desk
CN109557758A (en) * 2017-09-25 2019-04-02 江苏华夏知识产权服务有限公司 A kind of smart projector based on Internet of Things

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB481198A (en) * 1936-09-10 1938-03-08 George Carwardine Improvements in equipoising mechanism
EP0390010A1 (en) * 1989-03-24 1990-10-03 Kabushiki Kaisha Topcon Stereoscopic image apparatus
US9372386B2 (en) * 2012-04-10 2016-06-21 Seiko Epson Corporation Projection system, support, and image display method
CN203825352U (en) * 2014-04-15 2014-09-10 Gqg股份有限公司 Projector storage device
CN204009328U (en) * 2014-05-23 2014-12-10 广州艾恩电子有限公司 Portable translucent equipment
CN107833498A (en) * 2016-09-16 2018-03-23 淄博夸克医药技术有限公司 The projecting apparatus that a kind of management teaching uses
CN206555654U (en) * 2017-01-09 2017-10-13 东莞市瀚艺实业有限公司 A kind of rotating camera support base
CN206904530U (en) * 2017-05-27 2018-01-19 苏州长平视听设备有限公司 A kind of projector rack with parcel tray
CN207020451U (en) * 2017-06-28 2018-02-16 歌尔科技有限公司 Projection arrangement and projection robot
CN109557758A (en) * 2017-09-25 2019-04-02 江苏华夏知识产权服务有限公司 A kind of smart projector based on Internet of Things
CN207584295U (en) * 2017-12-14 2018-07-06 吴津青 A kind of electronic projection apparatus mounting bracket
CN107990127A (en) * 2018-01-09 2018-05-04 贾凡瑾 A kind of Chinese language of twin-lens dual-projection superposition reads aloud subtitle projection plate
CN108713862A (en) * 2018-06-26 2018-10-30 安徽六启教育软件科技有限公司 Teaching desk

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110895379A (en) * 2019-11-22 2020-03-20 江苏盐西世纪教育产业项目开发有限公司 Multi-camera multi-projector structured light experimental device

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