CN109991804A - A kind of lift Projection Display all-in-one machine - Google Patents
A kind of lift Projection Display all-in-one machine Download PDFInfo
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- CN109991804A CN109991804A CN201910415651.XA CN201910415651A CN109991804A CN 109991804 A CN109991804 A CN 109991804A CN 201910415651 A CN201910415651 A CN 201910415651A CN 109991804 A CN109991804 A CN 109991804A
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- projection
- fixedly connected
- recycling
- curtain
- rotation axis
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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
- G03B21/58—Projection screens collapsible, e.g. foldable; of variable area
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a kind of lift Projection Display all-in-one machines, belong to host computer field.A kind of lift Projection Display all-in-one machine, the present invention drives projection supporting mechanism rotating opening by driving mechanism and drives the rotation of curtain recovering mechanism at the same time, projection screen is unfolded and is supported, after the expansion, projector mechanism rotation is pushed by driving mechanism, it is set to adjust projection angle, follow projection screen to be unfolded and rotate always, after use finishes, projection supporting mechanism recycling is driven by driving mechanism, and curtain recovering mechanism is driven to recycle projection screen simultaneously, projector mechanism is adjusted the angle by driving mechanism at the same time, the invention can effectively control the height of projection screen, the size of entire display screen curtain can be adjusted by adjusting the height of projection screen, it is modified so as to the requirement preferably according to user.
Description
Technical field
The present invention relates to host computer field more particularly to a kind of lift Projection Display all-in-one machines.
Background technique
In the prior art, the whole size of all-in-one machine to a certain extent, depends primarily on the size of display, for 24
The very little above all-in-one machine carries more troublesome since size is larger.For this problem, there are two types of existing solutions: it
One, buy the lesser all-in-one machine of display sizes.The disadvantages of this solution is: 1, display sizes are smaller, largely can shadow
Ring the visual experience of people.2, visual fatigue is preferably caused using small-size display for a long time.Two, small size all-in-one machine collocation
Remote data indicator.The disadvantages of this solution is: remote data indicator is bulky, not portable, now using Projection Display all-in-one machine
Solution, can greatly reduce the occupied space of all-in-one machine, and can not to adjust projected display region big for existing all-in-one machine
It is small.
Summary of the invention
The purpose of the present invention is to solve projection angle and projected display region size can not be adjusted simultaneously, and
A kind of lift Projection Display all-in-one machine proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of lift Projection Display all-in-one machine, comprising: main chassis shell, projection screen and limiting slot, further includes: in projection
Fixed plate, projection bottom plate and limiting slot, the main chassis shell upper are provided with limiting slot, live inside the limiting slot
It is dynamic to be socketed with projection upper mounted plate, it is fixedly connected on front side of the projection upper mounted plate lower end with projection screen upper end, the projection
Curtain lower end passes through projection bottom plate and is fixedly connected with projection screen recovering mechanism, the projection screen recovering mechanism and driving
Mechanism engagement connection, the projection upper mounted plate lower end rear side are fixedly connected with projection supporting mechanism upper end, the projection support
It is fixedly connected on rear side of mechanism lower end and projection bottom plate lower end, the projection bottom plate is fixed with main chassis outer casing inner wall
Connection, the projection supporting mechanism lower end rear side are fixedly connected with driving mechanism, left and right above the main chassis case nose
Two sides are movably installed with projector mechanism, are fixedly connected on rear side of the projector mechanism with driving mechanism.
Preferably, the driving mechanism includes: servo motor, rotate gear, rotating wheel, rotates circle wheel, movable block, movement
Axis, transmission gear and rotation axis, the main chassis interior of shell left and right sides are fixedly installed with servo motor, the servo electricity
Machine front-end of spindle is successively fixedly installed with rotate gear and rotating wheel, and the company of engagement is taken turns with rotation circle in the outer side of rotate gear
It connects, the rotation circle wheel shaft interior portion movable sleeve is connected to shifting axle, and movable sleeve is connected to movable block, the movement on the shifting axle
The outer side of block is threadedly coupled with rotating wheel, and the shifting axle front end is fixedly connected with projector mechanism, and the rotation circle wheel is outer
Side engages connection with transmission gear, and the transmission gear axle center is fixedly connected with rotation shaft rear end, two before and after the rotation axis
End is all flexibly connected with main chassis outer casing inner wall, and company is engaged with projection screen recovering mechanism in the outer side of transmission gear
It connects, is fixedly connected on rear side of the rotation axis with projection supporting mechanism.
Preferably, the projection supporting mechanism includes: rotary supporting rod, transmission support bar, support rotating axis and driving wheel
Group, the rotation shaft rear end are fixedly connected with driving wheel group lower end, driving wheel group upper end axle center and support rotating shaft rear end
It is fixedly connected, is fixedly attached to inside rotary supporting rod lower end in the middle part of the support rotating axis, the support rotating shaft rear end is living
Dynamic to be socketed in inside projection bottom plate, support rotating axis upper end is flexibly connected by shaft with transmission support bar lower end,
Transmission support bar upper end is flexibly connected with projection upper mounted plate.
Preferably, the projection screen recovering mechanism include: curtain recycling runner, support fixed plate, recycling transmission gear,
Rotation axis and rotating wheel group are recycled, the outer side of transmission gear engages connection, the recycling transmission with recycling transmission gear
Gear axis is fixedly connected with the recycling inner side of rotation axis, is connected in the middle part of the recycling rotation axis with support fixed plate lower end activity
It connects, the outer one end of the recycling rotation axis is fixedly connected with rotating wheel group axle center, and rotating wheel group upper end axle center and curtain return
It receives runner left and right ends to be fixedly connected, all be connect with support fixed plate top movable at left and right sides of the curtain recycling runner, institute
It states curtain recycling runner to be fixedly connected with projection screen lower end, the support dead plate upper end and projection bottom plate lower surface are left
Right two sides are fixedly connected.
Preferably, the projector mechanism include: projection arrangement, projection slot and projection fixing axle, the shifting axle front end with
Projection arrangement bottom rear is fixedly connected, and the left and right sides is provided with projection slot, the throwing above the main chassis shell front side
Shadow slot internal activity is socketed with projection arrangement, and the left and right sides is fixed with the inner side of projection fixing axle and connected in the middle part of the projection arrangement
It connects, the outer side of the projection fixing axle is flexibly connected with projection slot inner wall.
Preferably, curtain limit plate is provided at left and right sides of the curtain recycling runner.
Compared with prior art, the present invention provides a kind of lift Projection Display all-in-one machine, have it is following the utility model has the advantages that
1. the present invention is provided with driving mechanism, projection supporting mechanism rotating opening is driven by driving mechanism and is driven at the same time
The rotation of curtain recovering mechanism, projection screen is unfolded and is supported, after the expansion, push projector mechanism by driving mechanism
Rotation makes it adjust projection angle, follows projection screen to be unfolded and rotate always, after use finishes, passes through driving mechanism
Projection supporting mechanism recycling is driven, and curtain recovering mechanism is driven to recycle projection screen simultaneously, passes through drive at the same time
Motivation structure adjusts the angle projector mechanism, which can effectively control the height of projection screen, can be by adjusting projection
The size of the height adjustment entire display screen curtain of curtain, is modified so as to the requirement preferably according to user.
2. be provided with driving mechanism in the present invention, when in use, by starting servo motor drive rotate gear and
Rotating wheel rotation drives to drive rotation circle wheel rotation and the thread groove by being arranged on rotating wheel drives movable block to move
Shifting axle moves forward, and by rotating circle wheel belt nutating gear rotation, rotation axis rotation is driven, to drive driving wheel group
Rotation drives the rotation of support rotating axis, drives rotary supporting rod rotation, the rotation of transmission support bar is driven, thus by rotational support
Bar and the expansion of transmission support bar, so that projection screen is unfolded.
3. being provided with projection screen recovering mechanism and projector mechanism in the present invention, when in use, pass through transmission gear
Recycling transmission gear rotation is driven, to drive recycling rotation axis rotation, the rotation of rotating wheel group is driven, so that curtain be driven to recycle
Runner rotation to be unfolded or be packed up work to projection screen, and is moved forward and backward by shifting axle, projection arrangement is driven to enclose
Around projection fixing axle rotation, so as to adjust the angle of projection arrangement.
Detailed description of the invention
Fig. 1 is a kind of overall schematic of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 2 is a kind of overall schematic of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 3 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 4 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 5 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 6 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 7 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 8 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Fig. 9 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention；
Figure 10 is a kind of fractionation schematic diagram of lift Projection Display all-in-one machine proposed by the present invention.
Figure label explanation:
101 main chassis shells, 102 projection screens, 103 limiting slots, 104 projection upper mounted plates, 105 projection bottom plates, 201
Servo motor, 202 rotate gears, 203 rotating wheels, 204 rotate circle wheels, 205 movable blocks, 206 shifting axles, 207 transmission gears,
208 rotation axis, 301 rotary supporting rods, 302 transmission support bars, 303 support rotating axis, 304 driving wheel groups, the recycling of 401 curtains turn
Wheel, 402 support fixed plates, 403 recycling transmission gears, 404 recycling rotation axis, 405 rotating wheel groups, 501 projection arrangements, 502 are thrown
Shadow slot, 503 projection fixing axles, 601 curtain limit plates.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", "top",
The orientation or positional relationship of the instructions such as "bottom", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with
Specific orientation construction and operation, therefore be not considered as limiting the invention.
Embodiment 1:
A kind of lift Projection Display all-in-one machine, comprising: main chassis shell 101, projection screen 102 and limiting slot 103 also wrap
Include: projection upper mounted plate 104, projection bottom plate 105 and limiting slot 103,101 top of main chassis shell are provided with limiting slot
103,103 internal activity of limiting slot is socketed with projection upper mounted plate 104, projection 104 lower end of upper mounted plate front side and projection screen
102 upper ends are fixedly connected, and 102 lower end of projection screen passes through projection bottom plate 105 and is fixedly connected with projection screen recovering mechanism,
Projection screen recovering mechanism engages connection, projection 104 lower end of upper mounted plate rear side and projection supporting mechanism upper end with driving mechanism
Be fixedly connected, projection supporting mechanism lower end with projection 105 lower end of bottom plate on rear side of be fixedly connected, project bottom plate 105 and
101 inner wall of main chassis shell is fixedly connected, and projection is fixedly connected on rear side of supporting mechanism lower end with driving mechanism, outside main chassis
The left and right sides is movably installed with projector mechanism above 101 front end of shell, is fixedly connected on rear side of projector mechanism with driving mechanism.
The present invention is provided with driving mechanism, drives projection supporting mechanism rotating opening and at the same time band by driving mechanism
Dynamic curtain recovering mechanism rotation, projection screen 102 is unfolded and is supported, and after the expansion, is pushed and is thrown by driving mechanism
The rotation of shadow mechanism, makes it adjust projection angle, follows projection screen 102 to be unfolded and rotate always, after use finishes, passes through
Driving mechanism drives projection supporting mechanism recycling, and curtain recovering mechanism is driven to recycle projection screen 102 simultaneously, with this
Projector mechanism is adjusted the angle by driving mechanism simultaneously, which can effectively control the height of projection screen 102, can be with
By adjusting the size of the height adjustment entire display screen curtain of projection screen 102, so as to preferably be wanted according to user
It asks and is modified.
Embodiment 2: based on embodiment 1 it is different be；
Driving mechanism includes: servo motor 201, rotate gear 202, rotating wheel 203, rotation circle wheel 204, movable block 205, movement
Axis 206, transmission gear 207 and rotation axis 208, the 101 inside left and right sides of main chassis shell are fixedly installed with servo motor
201,201 front-end of spindle of servo motor is successively fixedly installed with rotate gear 202 and rotating wheel 203, rotate gear 202 outer one
Connection is engaged with the round wheel 204 of rotation in side, rotates circle 204 axle center internal activities of wheel and is socketed with shifting axle 206, lives on shifting axle 206
Dynamic to be socketed with movable block 205, the outer side of movable block 205 is threadedly coupled with rotating wheel 203,206 front end of shifting axle and projector
Structure is fixedly connected, and is rotated 204 outer sides of circle wheel and is engaged connection, 207 axle center of transmission gear and rotation axis with transmission gear 207
208 rear ends are fixedly connected, and 208 rear and front end of rotation axis is all flexibly connected with 101 inner wall of main chassis shell, transmission gear 207
Outer side engages connection with projection screen recovering mechanism, and 208 rear side of rotation axis is fixedly connected with projection supporting mechanism.
Projecting supporting mechanism includes: rotary supporting rod 301, transmission support bar 302, support rotating axis 303 and driving wheel group
304,208 rear end of rotation axis is fixedly connected with 304 lower end of driving wheel group, 304 upper end axle center of driving wheel group and support rotating axis 304
Rear end is fixedly connected, and is fixedly attached to inside 301 lower end of rotary supporting rod in the middle part of support rotating axis 304, after support rotating axis 304
End is actively socketed on inside projection bottom plate 105, and 304 upper end of support rotating axis passes through shaft and 302 lower end of transmission support bar
It is flexibly connected, 302 upper end of transmission support bar is flexibly connected with projection upper mounted plate 104.
It is provided with driving mechanism in the present invention, when in use, rotate gear is driven by starting servo motor 201
202 and rotating wheel 203 rotate, to drive 204 rotation of rotation circle wheel, drive the thread groove simultaneously by being arranged on rotating wheel 203
It drives movable block 205 to move the forward movement of shifting axle 206, and is rotated by 204 band nutating gear 207 of rotation circle wheel, driven
Rotation axis 208 rotates, so that driving wheel group 304 be driven to rotate, support rotating axis 303 is driven to rotate, drives rotary supporting rod 301
Rotation drives transmission support bar 302 to rotate, to rotary supporting rod 301 and transmission support bar 302 are unfolded, thus will projection
Curtain 102 is unfolded.
Embodiment 3: based on Examples 1 and 2 it is different be；
Projection screen recovering mechanism includes: curtain recycling runner 401, support fixed plate 402, recycling transmission gear 403, recycling turn
Connection is engaged with recycling transmission gear 403 in moving axis 404 and rotating wheel group 405, the outer side of transmission gear 207, recycles driving cog
It takes turns 403 axle center to be fixedly connected with the recycling inner side of rotation axis 404,404 middle part of recycling rotation axis and support 405 lower end of fixed plate
Be flexibly connected, recycling the outer one end of rotation axis 404 be fixedly connected with 405 axle center of rotating wheel group, 405 upper end axle center of rotating wheel group and
Curtain recycling 401 left and right ends of runner are fixedly connected, curtain recycle the left and right sides of runner 401 all with support 402 top of fixed plate
It is flexibly connected, curtain recycling runner 401 is fixedly connected with 102 lower end of projection screen, and support 402 upper end of fixed plate and projection are lower solid
It is fixedly connected at left and right sides of 105 lower surface of fixed board.
Projector mechanism includes: projection arrangement 501, projection slot 502 and projection fixing axle 503,206 front end of shifting axle and projection
501 bottom rear of device is fixedly connected, and is provided with projection slot 502, projection slot at left and right sides of 101 front side top of main chassis shell
502 internal activities are socketed with projection arrangement 501, and the 501 middle part left and right sides of projection arrangement and the projection inner side of fixing axle 503 are solid
Fixed connection, the projection outer side of fixing axle 503 are flexibly connected with 502 inner wall of projection slot.
Curtain limit plate 601 is provided at left and right sides of curtain recycling runner 401.
It is provided with projection screen recovering mechanism and projector mechanism in the present invention, when in use, passes through transmission gear 207
It drives recycling transmission gear 403 to rotate, so that recycling rotation axis 404 be driven to rotate, drives rotating wheel group 405 to rotate, thus band
Dynamic curtain recycling runner 401 rotates, to be unfolded or be packed up work to projection screen 102, and passes through 206 front and back of shifting axle
It is mobile, drive projection arrangement 501 to rotate around projection fixing axle 503, so as to adjust the angle of projection arrangement 501.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of lift Projection Display all-in-one machine, comprising: main chassis shell (101), projection screen (102) and limiting slot
(103), it is characterised in that: further include: projection upper mounted plate (104), projection bottom plate (105) and limiting slot (103), it is described
Main chassis shell (101) top is provided with limiting slot (103), and limiting slot (103) internal activity is socketed with solid in projection
Fixed board (104), projection upper mounted plate (104) the lower end front side are fixedly connected with projection screen (102) upper end, the projection screen
Cloth (102) lower end passes through projection bottom plate (105) and is fixedly connected with projection screen recovering mechanism, the projection screen recycling machine
Structure engages connection with driving mechanism, is fixedly connected on rear side of projection upper mounted plate (104) lower end with projection supporting mechanism upper end,
It is fixedly connected on rear side of the projection supporting mechanism lower end and projection bottom plate (105) lower end, the projection bottom plate (105)
It is fixedly connected, is fixedly connected on rear side of the projection supporting mechanism lower end with driving mechanism, institute with main chassis shell (101) inner wall
It states the left and right sides above main chassis shell (101) front end and is movably installed with projector mechanism, the projector mechanism rear side and driving
Mechanism is fixedly connected.
2. a kind of lift Projection Display all-in-one machine according to claim 1, it is characterised in that: the driving mechanism packet
It includes: servo motor (201), rotate gear (202), rotating wheel (203), rotation circle wheel (204), movable block (205), shifting axle
(206), transmission gear (207) and rotation axis (208), the internal left and right sides of the main chassis shell (101) are fixedly installed with
Servo motor (201), servo motor (201) front-end of spindle are successively fixedly installed with rotate gear (202) and rotating wheel
(203), the outer side of the rotate gear (202) engages connection, described rotation circle wheel (204) axle center with rotation circle wheel (204)
Internal activity is socketed with shifting axle (206), and movable sleeve is connected to movable block (205), the movable block on the shifting axle (206)
(205) outer side is threadedly coupled with rotating wheel (203), and shifting axle (206) front end is fixedly connected with projector mechanism, described
Connection, transmission gear (207) axle center and rotation axis are engaged with transmission gear (207) in rotation circle wheel (204) outer side
(208) rear end is fixedly connected, and rotation axis (208) rear and front end is all flexibly connected with main chassis shell (101) inner wall, institute
It states transmission gear (207) outer side and engages connection, rotation axis (208) rear side and projection branch with projection screen recovering mechanism
Support mechanism is fixedly connected.
3. a kind of lift Projection Display all-in-one machine according to claim 2, it is characterised in that: the projection supporting mechanism
It include: rotary supporting rod (301), transmission support bar (302), support rotating axis (303) and driving wheel group (304), the rotation
Axis (208) rear end is fixedly connected with driving wheel group (304) lower end, driving wheel group (304) the upper end axle center and support rotating axis
(304) rear end is fixedly connected, and is fixedly attached to inside rotary supporting rod (301) lower end in the middle part of the support rotating axis (304), institute
It states support rotating axis (304) back end activity and is socketed in projection bottom plate (105) inside, support rotating axis (304) upper end
It is flexibly connected by shaft with transmission support bar (302) lower end, transmission support bar (302) upper end and projection upper mounted plate
(104) it is flexibly connected.
4. a kind of lift Projection Display all-in-one machine according to claim 2, it is characterised in that: the projection screen recycling
Mechanism include: curtain recycling runner (401), support fixed plate (402), recycling transmission gear (403), recycling rotation axis (404),
With rotating wheel group (405), connection, the recycling are engaged with recycling transmission gear (403) in the outer side of the transmission gear (207)
Transmission gear (403) axle center is fixedly connected with recycling rotation axis (404) inner side, in the middle part of the recycling rotation axis (404) and
Fixed plate (405) lower end is supported to be flexibly connected, the outer one end of the recycling rotation axis (404) and rotating wheel group (405) axle center are solid
Fixed connection, rotating wheel group (405) the upper end axle center are fixedly connected with curtain recycling runner (401) left and right ends, the curtain
All connect with support fixed plate (402) top movable at left and right sides of recycling runner (401), curtain recycling runner (401) and
Projection screen (102) lower end is fixedly connected, and the support fixed plate (402) upper end and projection bottom plate (105) lower surface are left
Right two sides are fixedly connected.
5. a kind of lift Projection Display all-in-one machine according to claim 2, it is characterised in that: the projector mechanism packet
It includes: projection arrangement (501), projection slot (502) and projection fixing axle (503), shifting axle (206) front end and projection arrangement
(501) bottom rear is fixedly connected, and is provided with projection slot (502) at left and right sides of main chassis shell (101) front side top,
Projection slot (502) internal activity is socketed with projection arrangement (501), the left and right sides and throwing in the middle part of the projection arrangement (501)
Shadow fixing axle (503) inner side is fixedly connected, and the outer side of the projection fixing axle (503) and projection slot (502) inner wall are living
Dynamic connection.
6. a kind of lift Projection Display all-in-one machine according to claim 4, it is characterised in that: the curtain recycles runner
(401) left and right sides is provided with curtain limit plate (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415651.XA CN109991804B (en) | 2019-05-18 | 2019-05-18 | Lifting type projection display all-in-one machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910415651.XA CN109991804B (en) | 2019-05-18 | 2019-05-18 | Lifting type projection display all-in-one machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109991804A true CN109991804A (en) | 2019-07-09 |
| CN109991804B CN109991804B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910415651.XA Active CN109991804B (en) | 2019-05-18 | 2019-05-18 | Lifting type projection display all-in-one machine |
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| CN (1) | CN109991804B (en) |
Cited By (4)
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| CN110880251A (en) * | 2019-11-30 | 2020-03-13 | 王毅 | Portable projection arrangement of marketing training teaching |
| CN112099300A (en) * | 2020-09-25 | 2020-12-18 | 广州互媒盈动文化传媒科技有限公司 | Multimedia equipment user interface |
| CN113160618A (en) * | 2021-02-28 | 2021-07-23 | 夏培准 | Multimedia teaching equipment |
| CN113443263A (en) * | 2020-03-24 | 2021-09-28 | 辽宁工业大学 | Portable digital media containing box |
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| CN113443263A (en) * | 2020-03-24 | 2021-09-28 | 辽宁工业大学 | Portable digital media containing box |
| CN113443263B (en) * | 2020-03-24 | 2022-11-25 | 辽宁工业大学 | Portable digital media containing box |
| CN112099300A (en) * | 2020-09-25 | 2020-12-18 | 广州互媒盈动文化传媒科技有限公司 | Multimedia equipment user interface |
| CN113160618A (en) * | 2021-02-28 | 2021-07-23 | 夏培准 | Multimedia teaching equipment |
| CN113160618B (en) * | 2021-02-28 | 2022-11-01 | 陕西易视通达科技有限公司 | Multimedia teaching equipment |
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| CN109991804B (en) | 2021-04-06 |
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