CN108133680A - A kind of holographic projector of good damping effect - Google Patents
A kind of holographic projector of good damping effect Download PDFInfo
- Publication number
- CN108133680A CN108133680A CN201711458223.2A CN201711458223A CN108133680A CN 108133680 A CN108133680 A CN 108133680A CN 201711458223 A CN201711458223 A CN 201711458223A CN 108133680 A CN108133680 A CN 108133680A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- spring
- far
- holographic projector
- damping effect
- 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.)
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Classifications
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
-
- 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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Acoustics & Sound (AREA)
- Combustion & Propulsion (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Theoretical Computer Science (AREA)
- Vibration Dampers (AREA)
Abstract
The present invention relates to line holographic projections technical fields, and disclose a kind of holographic projector of good damping effect, including protection cabinet, the bottom of the security protection shield cabinet wall is fixedly connected with telescopic rod, buffer board is fixedly connected at the top of the telescopic rod, the surface of the telescopic rod is socketed with the first spring, the both sides of the buffer board are connected with the first hinged seat, the described one end of first hinged seat far from buffer board is connected with supporting rod, the one end of the supporting rod far from the first hinged seat is connected with fixing pipe, the one end of the supporting rod far from the first hinged seat is fixedly connected with there is fixed plate, the one end of the fixed plate far from supporting rod is fixedly connected with second spring, the fixed plate is with second spring in the inside of fixing pipe.The holographic projector good damping effect of the good damping effect, can effectively protect holographic projector, the use for the person of being convenient to use.
Description
Technical field
The present invention relates to line holographic projections technical field, specially a kind of holographic projector of good damping effect.
Background technology
Line holographic projections technology, also referred to as virtual image technology are that simultaneously reconstructed object is true using interference and diffraction principle record
The technology of 3-D view, line holographic projections technology can not only generate three-dimensional aerial mirage phantom, and mirage phantom can also be made to be produced with performing artist
It is raw interactive, performance is completed together, generates shocking performing effect, the exhibition of scope of application showpiece, automobile garment news conference, dance
Platform program, interaction, bar amusement, place interaction etc..
While line holographic projections extensive use, the type of holographic projector also increasingly increases, therefore holography is thrown
The protection of image device also slowly obtains the attention of people, and conventional projection device is only simply set up, since stage etc. is existing
Field easily generates vibration, therefore projection arrangement be easy to cause and collides with, it has not been convenient to a kind of use of user, it is proposed that damping effect
Good holographic projector solves the above problems.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of holographic projector of good damping effect, has damping
The advantages that effect is good solves the problems, such as that conventional projection device easily causes and collides with.
(2) technical solution
To realize the purpose of above-mentioned good damping effect, the present invention provides following technical solution：A kind of good damping effect it is complete
Projection arrangement is ceased, including protection cabinet, the bottom of the security protection shield cabinet wall is fixedly connected with telescopic rod, the telescopic rod
Top is fixedly connected with buffer board, and the surface of the telescopic rod is socketed with the first spring, and the both sides activity of the buffer board is even
The first hinged seat is connected to, the described one end of first hinged seat far from buffer board is connected with supporting rod, and the supporting rod is separate
One end of first hinged seat is connected with fixing pipe, and the one end of the supporting rod far from the first hinged seat is fixedly connected solid with having
Fixed board, the one end of the fixed plate far from supporting rod are fixedly connected with second spring, and the fixed plate is with second spring solid
The inside of fixed tube, the one end of the fixing pipe far from supporting rod are connected with the second hinged seat, and the top of the buffer board is consolidated
Surely rubber slab is connected with, heat emission hole is offered at the top of the rubber slab, increasing stop block is provided at the top of the rubber slab, it is described
Cylinder slot is fixedly connected at left and right sides of protection cabinet inner wall, the inner wall of the cylinder slot is fixedly connected with third spring, described
The one end of third spring far from cylinder slot inner wall is fixedly connected with elastic plate, and the one end of the elastic plate far from third spring, which is fixed, to be connected
Buffer bar is connected to, the one end of the buffer bar far from elastic plate is fixedly connected with snap-gauge, the one end of the snap-gauge far from buffer bar
Foam-rubber cushion is fixedly connected with, the top movable of the rubber slab is connected with the holographic projector between two snap-gauges.
Preferably, the quantity of the cylinder slot, elastic plate and buffer bar is six, and the quantity of the third spring is six
Group, and each group of quantity is three.
Preferably, the shape of the snap-gauge is L-type plate.
Preferably, the inner wall of the protection cabinet is installed with radiator, and radiator is by accumulator and fan
It forms.
Preferably, the bottom of first spring is fixedly connected with protection cabinet, the top of first spring and buffering
Plate is fixedly connected.
Preferably, the length of the rubber slab is more than the length of buffer board, and is contacted between rubber slab and snap-gauge.
(3) advantageous effect
Compared with prior art, the present invention provides a kind of holographic projectors of good damping effect, have following beneficial
Effect：
The holographic projector of the good damping effect, by under the common cooperation of telescopic rod, the first spring and buffer board, making
Holographic projector has certain buffer capacity in the vertical direction, can be effective when holographic projector being caused to vibrate because of collision
Play protective action, under the collective effect of the first hinged seat, fixed plate, second spring, fixing pipe and the second hinged seat, make
The damping effect of buffer board is more preferable, so as to make better protecting effect, then in cylinder slot, third spring, buffer bar, snap-gauge and sponge
Under the common cooperation of pad, make holographic projector that there is good buffering effect in the horizontal direction, effectively play the guarantor to it
Shield, the use for the person of being convenient to use, under the common cooperation of heat emission hole and radiator, team's holographic projector at work into
Row heat dissipation, prevents because temperature is excessively high, leads to machine breakdown, the use for the person of being convenient to use.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged drawing of A in the present invention 1.
In figure：1 protection cabinet, 2 telescopic rods, 3 buffer boards, 4 first springs, 5 first hinged seats, 6 supporting rods, 7 fixing pipes,
8 fixed plates, 9 second springs, 10 second hinged seats, 11 rubber slabs, 12 heat emission holes, 13 increase stop blocks, 14 cylinder slots, 15 third springs,
16 elastic plates, 17 buffer bars, 18 snap-gauges, 19 foam-rubber cushions, 20 holographic projectors.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
- 2 are please referred to Fig.1, a kind of holographic projector of good damping effect including protection cabinet 1, is pacified in protection cabinet 1
The bottom of wall is fixedly connected with telescopic rod 2, and the top of telescopic rod 2 is fixedly connected with buffer board 3, and the surface of telescopic rod 2 is socketed with
First spring 4, the bottom of the first spring 4 are fixedly connected with protection cabinet 1, and the top of the first spring 4 is fixed with buffer board 3 to be connected
It connects, by under the common cooperation of telescopic rod 2, the first spring 4 and buffer board 3, holographic projector 20 being made to have in the vertical direction
Certain buffer capacity when holographic projector 20 being caused to vibrate because of collision, can play it effective protective action, buffer board
3 both sides are connected with the first hinged seat 5, and first one end of hinged seat 5 far from buffer board 3 is connected with supporting rod 6,
The one end of supporting rod 6 far from the first hinged seat 5 is connected with fixing pipe 7, and the one end of supporting rod 6 far from the first hinged seat 5 is consolidated
With there is fixed plate 8, the one end of fixed plate 8 far from supporting rod 6 is fixedly connected with second spring 9,8 and second bullet of fixed plate for fixed connection
For spring 9 in the inside of fixing pipe 7, the one end of fixing pipe 7 far from supporting rod 6 is connected with the second hinged seat 10, in the first hinge
Under joint chair 5, fixed plate 8, second spring 9, the collective effect of 7 and second hinged seat 10 of fixing pipe, make the damping effect of buffer board 3
More preferably, so as to make better protecting effect, the top of buffer board 3 is fixedly connected with rubber slab 11, and the length of rubber slab 11, which is more than, to be delayed
The length of punching 3, the top of rubber slab 11 offer heat emission hole 12, and the inner wall of protection cabinet 1 is installed with radiator, and
Radiator is made of accumulator and fan, coordinates the collective effect of heat emission hole 12, holographic projector 20 is made to carry out at work
Heat dissipation, prevents because temperature is excessively high, leads to machine breakdown, the use for the person of being convenient to use, and the top of rubber slab 11 is provided with increasing resistance
Block 13 can effectively reduce holographic projector 20 and move, cylinder slot has been fixedly connected at left and right sides of 1 inner wall of protection cabinet
14, the inner wall of cylinder slot 14 is fixedly connected with third spring 15, and the one end of third spring 15 far from 14 inner wall of cylinder slot is fixedly connected with
Elastic plate 16, the one end of elastic plate 16 far from third spring 15 are fixedly connected with buffer bar 17, cylinder slot 14, elastic plate 16 and buffering
The quantity of bar 17 is six, and the quantity of third spring 15 is six groups, and each group of quantity is three, and buffer bar 17 is far from elasticity
One end of plate 16 is fixedly connected with snap-gauge 18, is contacted between rubber slab 11 and snap-gauge 18, makes snap-gauge 18 vibrated in the device
When, damping can be effectively carried out, the shape of snap-gauge 18 is L-type plate, prevents from falling into dust in the device, and machine is caused event occur
Barrier, the one end of snap-gauge 18 far from buffer bar 17 are fixedly connected with foam-rubber cushion 19, and the top movable of rubber slab 11 is connected with positioned at two
Holographic projector 20 between a snap-gauge 18, then in cylinder slot 14, third spring 15, buffer bar 17, snap-gauge 18 and foam-rubber cushion 19
Common cooperation under, make holographic projector 20 that there is good buffering effect in the horizontal direction, effectively play the guarantor to it
Shield, the use for the person of being convenient to use.
In conclusion the holographic projector of the good damping effect, passes through telescopic rod 2, the first spring 4 and buffer board 3
Under common cooperation, make holographic projector 20 that there is certain buffer capacity in the vertical direction, when leading to holographic projector because of collision
During 20 vibration, effective protective action can be played to it, in the first hinged seat 5, fixed plate 8, second spring 9,7 and of fixing pipe
Under the collective effect of second hinged seat 10, the damping effect for making buffer board 3 is more preferable, so as to make better protecting effect, then in cylinder
Slot 14, third spring 15, buffer bar 17, snap-gauge 18 and foam-rubber cushion 19 common cooperation under, make holographic projector 20 in level side
To with good buffering effect, effectively playing the protection to it, the use for the person of being convenient to use, in heat emission hole 12 and
Under the common cooperation of radiator, holographic projector 20 is made to radiate at work, prevents from, because temperature is excessively high, machine being caused to damage
It is bad, the use for the person of being convenient to use.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this practical relationship or sequence.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of holographic projector of good damping effect, including protection cabinet (1), it is characterised in that：The peace protection cabinet
(1) bottom of inner wall is fixedly connected with telescopic rod (2), and buffer board (3) is fixedly connected at the top of the telescopic rod (2), described
The surface of telescopic rod (2) is socketed with the first spring (4), and the both sides of the buffer board (3) are connected with the first hinged seat
(5), the one end of first hinged seat (5) far from buffer board (3) is connected with supporting rod (6), and the supporting rod (6) is separate
One end of first hinged seat (5) is connected with fixing pipe (7), and the one end of the supporting rod (6) far from the first hinged seat (5) is consolidated
With there is fixed plate (8), the one end of the fixed plate (8) far from supporting rod (6) is fixedly connected with second spring (9), institute for fixed connection
Fixed plate (8) is stated with second spring (9) in the inside of fixing pipe (7), the one end of the fixing pipe (7) far from supporting rod (6)
The second hinged seat (10) is connected with, rubber slab (11), the rubber slab are fixedly connected at the top of the buffer board (3)
(11) heat emission hole (12) is offered at the top of, is provided at the top of the rubber slab (11) and increases stop block (13), the protection cabinet
(1) cylinder slot (14) has been fixedly connected at left and right sides of inner wall, the inner wall of the cylinder slot (14) is fixedly connected with third spring
(15), the one end of the third spring (15) far from cylinder slot (14) inner wall is fixedly connected with elastic plate (16), the elastic plate
(16) one end far from third spring (15) is fixedly connected with buffer bar (17), the separate elastic plate (16) of the buffer bar (17)
One end is fixedly connected with snap-gauge (18), and the one end of the snap-gauge (18) far from buffer bar (17) is fixedly connected with foam-rubber cushion (19),
The top movable of the rubber slab (11) is connected with the holographic projector (20) between two snap-gauges (18).
2. a kind of holographic projector of good damping effect according to claim 1, it is characterised in that：The cylinder slot
(14), the quantity of elastic plate (16) and buffer bar (17) is six, and the quantity of the third spring (15) is six groups, and each
Group quantity is three.
3. a kind of holographic projector of good damping effect according to claim 1, it is characterised in that：The snap-gauge (18)
Shape be L-type plate.
4. a kind of holographic projector of good damping effect according to claim 1, it is characterised in that：The protection cabinet
(1) inner wall is installed with radiator, and radiator is made of accumulator and fan.
5. a kind of holographic projector of good damping effect according to claim 1, it is characterised in that：First spring
(4) bottom is fixedly connected with protection cabinet (1), and the top of first spring (4) is fixedly connected with buffer board.
6. a kind of holographic projector of good damping effect according to claim 1, it is characterised in that：The rubber slab
(11) length is more than the length of buffer board (3), and is contacted between rubber slab (11) and snap-gauge (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458223.2A CN108133680A (en) | 2017-12-28 | 2017-12-28 | A kind of holographic projector of good damping effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458223.2A CN108133680A (en) | 2017-12-28 | 2017-12-28 | A kind of holographic projector of good damping effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108133680A true CN108133680A (en) | 2018-06-08 |
Family
ID=62393578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711458223.2A Withdrawn CN108133680A (en) | 2017-12-28 | 2017-12-28 | A kind of holographic projector of good damping effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108133680A (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547900A (en) * | 2018-07-12 | 2018-09-18 | 徐工集团工程机械有限公司 | Launch protective device |
| CN108730406A (en) * | 2018-07-05 | 2018-11-02 | 安徽云图信息技术有限公司 | A kind of computer cabinet based on network security |
| CN108741215A (en) * | 2018-09-15 | 2018-11-06 | 江西中烟工业有限责任公司 | A kind of tobacco processing filament cutter of damping |
| CN108870038A (en) * | 2018-06-28 | 2018-11-23 | 芜湖威灵数码科技有限公司 | A kind of damping of multimedia projector |
| CN109036189A (en) * | 2018-08-17 | 2018-12-18 | 孙同娟 | A kind of combined advertisement frame of rotary multi |
| CN109118993A (en) * | 2018-08-17 | 2019-01-01 | 孙同娟 | A kind of bidirectional displaying frame of multistage fixed damping |
| CN109185389A (en) * | 2018-08-09 | 2019-01-11 | 襄阳美标朗源动力实业有限公司 | A kind of non-natural gas used for automobile generating set |
| CN109240030A (en) * | 2018-10-17 | 2019-01-18 | 北京西柚传媒科技有限公司 | A kind of huge curtain projection arrangement mounting box |
| CN109283509A (en) * | 2018-07-24 | 2019-01-29 | 前海盛德技术（深圳）有限公司 | Laser radar based on multilayer ceramic circuit board emits light source assembly |
| CN109898632A (en) * | 2019-03-27 | 2019-06-18 | 日照源立泵业有限公司 | Prefabricated pumping plant with remote monitoring function |
| CN110687769A (en) * | 2018-07-06 | 2020-01-14 | 石景华 | Air holographic display device supporting WIFI communication mode |
| CN110989280A (en) * | 2020-01-06 | 2020-04-10 | 李智薇 | Circular screen type 360-degree panoramic holographic projection display device |
| CN111196222A (en) * | 2020-01-21 | 2020-05-26 | 郑州天匠电子科技有限公司 | Holographic image device of public automobile |
| CN111546971A (en) * | 2020-06-09 | 2020-08-18 | 国网山东省电力公司莱阳市供电公司 | Electric power safety propaganda device |
| CN111729326A (en) * | 2018-08-29 | 2020-10-02 | 范甬挺 | Protection pad with safety protection performance based on entertainment wind tunnel |
| CN112042715A (en) * | 2019-06-07 | 2020-12-08 | 南宁学院 | Sausage processing device |
| CN112751586A (en) * | 2021-01-19 | 2021-05-04 | 南京誉葆科技有限公司 | Radio frequency communication system for aircraft |
| CN112782925A (en) * | 2021-02-03 | 2021-05-11 | 河北民族师范学院 | 3D holographic image projection equipment |
| CN113503433A (en) * | 2021-06-30 | 2021-10-15 | 王小翠 | Holographic projector |
| JP7528735B2 (en) | 2020-11-17 | 2024-08-06 | 株式会社リコー | Image Projection Device |
-
2017
- 2017-12-28 CN CN201711458223.2A patent/CN108133680A/en not_active Withdrawn
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108870038A (en) * | 2018-06-28 | 2018-11-23 | 芜湖威灵数码科技有限公司 | A kind of damping of multimedia projector |
| CN108730406A (en) * | 2018-07-05 | 2018-11-02 | 安徽云图信息技术有限公司 | A kind of computer cabinet based on network security |
| CN110687769A (en) * | 2018-07-06 | 2020-01-14 | 石景华 | Air holographic display device supporting WIFI communication mode |
| CN108547900A (en) * | 2018-07-12 | 2018-09-18 | 徐工集团工程机械有限公司 | Launch protective device |
| CN109283509A (en) * | 2018-07-24 | 2019-01-29 | 前海盛德技术（深圳）有限公司 | Laser radar based on multilayer ceramic circuit board emits light source assembly |
| CN109185389A (en) * | 2018-08-09 | 2019-01-11 | 襄阳美标朗源动力实业有限公司 | A kind of non-natural gas used for automobile generating set |
| CN109118993A (en) * | 2018-08-17 | 2019-01-01 | 孙同娟 | A kind of bidirectional displaying frame of multistage fixed damping |
| CN109036189A (en) * | 2018-08-17 | 2018-12-18 | 孙同娟 | A kind of combined advertisement frame of rotary multi |
| CN111729326A (en) * | 2018-08-29 | 2020-10-02 | 范甬挺 | Protection pad with safety protection performance based on entertainment wind tunnel |
| CN108741215A (en) * | 2018-09-15 | 2018-11-06 | 江西中烟工业有限责任公司 | A kind of tobacco processing filament cutter of damping |
| CN109240030A (en) * | 2018-10-17 | 2019-01-18 | 北京西柚传媒科技有限公司 | A kind of huge curtain projection arrangement mounting box |
| CN109898632A (en) * | 2019-03-27 | 2019-06-18 | 日照源立泵业有限公司 | Prefabricated pumping plant with remote monitoring function |
| CN112042715A (en) * | 2019-06-07 | 2020-12-08 | 南宁学院 | Sausage processing device |
| CN110989280A (en) * | 2020-01-06 | 2020-04-10 | 李智薇 | Circular screen type 360-degree panoramic holographic projection display device |
| CN110989280B (en) * | 2020-01-06 | 2021-09-03 | 李智薇 | Circular screen type 360-degree panoramic holographic projection display device |
| CN111196222A (en) * | 2020-01-21 | 2020-05-26 | 郑州天匠电子科技有限公司 | Holographic image device of public automobile |
| CN111546971B (en) * | 2020-06-09 | 2021-08-03 | 国网山东省电力公司莱阳市供电公司 | Electric power safety propaganda device |
| CN111546971A (en) * | 2020-06-09 | 2020-08-18 | 国网山东省电力公司莱阳市供电公司 | Electric power safety propaganda device |
| JP7528735B2 (en) | 2020-11-17 | 2024-08-06 | 株式会社リコー | Image Projection Device |
| CN112751586A (en) * | 2021-01-19 | 2021-05-04 | 南京誉葆科技有限公司 | Radio frequency communication system for aircraft |
| CN112751586B (en) * | 2021-01-19 | 2022-05-03 | 南京誉葆科技有限公司 | Radio frequency communication system for aircraft |
| CN112782925A (en) * | 2021-02-03 | 2021-05-11 | 河北民族师范学院 | 3D holographic image projection equipment |
| CN112782925B (en) * | 2021-02-03 | 2022-05-20 | 河北民族师范学院 | 3D holographic image projection equipment |
| CN113503433A (en) * | 2021-06-30 | 2021-10-15 | 王小翠 | Holographic projector |
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Application publication date: 20180608 |