CN110085117A - Electronic demonstration device - Google Patents

Electronic demonstration device Download PDF

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Publication number
CN110085117A
CN110085117A CN201910204144.1A CN201910204144A CN110085117A CN 110085117 A CN110085117 A CN 110085117A CN 201910204144 A CN201910204144 A CN 201910204144A CN 110085117 A CN110085117 A CN 110085117A
Authority
CN
China
Prior art keywords
barb
shell
display screen
rod
processor
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.)
Pending
Application number
CN201910204144.1A
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Chinese (zh)
Inventor
吕彬
Original Assignee
吕彬
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 吕彬 filed Critical 吕彬
Priority to CN201910204144.1A priority Critical patent/CN110085117A/en
Publication of CN110085117A publication Critical patent/CN110085117A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00Miscellaneous advertising or display means not provided for elsewhere
    • G09F19/12Miscellaneous advertising or display means not provided for elsewhere using special optical effects
    • G09F19/18Miscellaneous advertising or display means not provided for elsewhere using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Abstract

The present invention provides a kind of electronic demonstration devices, including shell, touch display screen is installed on the shell, processor and battery are installed in the shell, the touch display screen is as user's hand input device, and for showing the hand-written content of user, the handwritten content after identification is transferred to the display and shown by the processor for identifying after receiving the handwritten content that user is inputted by touch display screen;The battery is used to power to processor and display screen, electronic demonstration device provided by the invention, in public places such as coffee shop, restaurants, the purpose of oneself can be shown in touch display screen by way of text, consequently facilitating people at one's side understands the hope of oneself, this hope of oneself is made to be easier to realize.

Description

Electronic demonstration device
Technical field
The present invention relates to technical field of living goods, more particularly, to a kind of electronic demonstration device.
Background technique
As the improvement of people's living standards, the public arenas such as coffee-house, restaurant are no longer strange to people, people go this There are many purposes of kind public arena, and somebody is that trival matters mood agitation needs peace and quiet, and somebody is idler to need that people is looked for chat Common topic etc., and for people at one's side, due to not knowing oneself purpose, this hope of people is not easily accomplished, Therefore, it is necessary to one to show that device makes people at one's side know the purpose of oneself.
Summary of the invention
Therefore, the present invention provides a kind of electronic demonstration devices, to solve the above technical problems.
The technical scheme is that a kind of electronic demonstration device, including shell, touch display is installed on the shell Shield, processor and battery are installed in the shell, the touch display screen is used to show as user's hand input device The hand-written content of user, the processor for identifying after receiving the handwritten content that user is inputted by touch display screen, The handwritten content after identification is transferred to the display to show;The battery is used to power to processor and display screen.
Optionally, projection arrangement is also equipped on the shell, the projection arrangement is connected to the processor.
Optionally, wireless receiving module is installed in the shell, alarm is installed on the shell, it is described wirelessly to connect It receives module and the alarm is connected to the processor respectively, the processor is also used to control the wireless receiving module and connects The signal that the wireless transmitter module of special frequency channel issues is received, and controls alarm after the signal for receiving wireless transmitter module sending Device alarm.
Optionally, it is also equipped with USB interface on shell, for connecting input unit.
Optionally, the bottom surface of the shell is equipped with sucker, the sucker include sucker ontology and with sucker ontology one The fixed part of setting, the fixed part are internally provided with cavity, and the interior bottom positioned at the cavity of the cavity is circumferentially fixed to be had Multiple L shape locating parts are provided with piston in the cavity, are provided with spring between the piston and multiple L shape locating parts; It is provided with sliding slot on the shell, limiting slot is provided in the sliding slot, sliding shoe, the sliding shoe are provided in the sliding slot One end be against the slot bottom of the sliding slot, the other end extends the sliding slot and is connected with finger ring, and L shape is connected on the sliding block Piston rod, the opening direction of the L shape piston rod is towards the sliding slot, and when sliding block is depressed into bottom, L shape piston rod Bending part passes through the top position of the fixed part in the accommodating space, when sliding block rises to top, the folding of L shape piston rod Crook is located in the strip-shaped hole at the top of the fixed part;It is provided in the middle part of the sucker ontology and is connected to the cavity Hole, the edge in the hole are located at the inside of the fixed part.
Optionally, it is provided with extension at the top of the shell, is articulated at the top of the display screen on the extension, Also it is hinged with first connecting rod on the shell, the bottom of the display screen is provided with second connecting rod, the first connecting rod and described Second connecting rod is connected by limiting device;The limiting device includes fixing axle and turntable, and the fixing axle and described second connect Bar is fixedly connected, and the turntable is fixedly connected with the first connecting rod, and activity is riveted in the fixing axle, the fixing axle End be provided with card slot, the position by proximal edge of the turntable is provided with blocking column, torsion bullet is provided on the turntable One end of piece, the torsion elastic slice is stuck in the card slot, and the other end is provided with the first barb, and first barb is hooked in described Stop on column;The outer ring of the torque spring is provided with angling hole, and the torque spring is close to the outside of a circle of the outer ring It is provided with the second barb, the distance of second barb to first barb is less than the angling hole to first barb The distance of distance, one end to second barb on the inside of the close torque spring of the angling hole is greater than leaning on for the angling hole One end on the outside of nearly torque spring is to the distance of second barb, and the end of second barb is towards the torque spring The side of inside is provided with rake, the distance at center of the rake close to one end of second barb to the turntable The distance at center of the one end to the turntable greater than the rake far from second barb;The limiting device further includes Disk is protected, is fixed with newel on the protection disk, the tenon with card slot cooperation is provided on the newel.
Optionally, second barb is made using elastic material.
The purpose of oneself can be passed through text in public places such as coffee shop, restaurants by electronic demonstration device provided by the invention The form of word is shown in touch display screen, consequently facilitating people at one's side understands the hope of oneself, makes this hope of oneself It hopes and is easier to realize.
Detailed description of the invention
Fig. 1 is a kind of one of structural schematic diagram of electronic demonstration device of the present invention;
Fig. 2 is a kind of second structural representation of electronic demonstration device of the invention;
Fig. 3 is a kind of third structural representation of electronic demonstration device of the present invention;
Fig. 4 is enlarged drawing of the Fig. 3 at A;
Fig. 5 is the state diagram of L shape piston rod when pushing finger ring;
The state diagram of L shape piston rod when Fig. 6 is spring reset;
Fig. 7 makes a kind of mounting structure schematic diagram of touch display screen;
Fig. 8 is a kind of front elevation of the mounting structure schematic diagram of turntable;
Fig. 9 is a kind of side view of the mounting structure schematic diagram of turntable;
Figure 10 is a kind of partial profile structure of torsion elastic slice;
Figure 11 is a kind of structural schematic diagram of second barb;
Figure 12 is a kind of front elevation of structural schematic diagram for protecting disk;
Figure 13 is a kind of side view of structural schematic diagram for protecting disk.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1, the present invention provides a kind of electronic demonstration devices, referring to Fig. 1, including shell, are equipped on the shell Touch display screen is equipped with processor and battery in the shell,
The touch display screen is as user's hand input device, and for showing the hand-written content of user,
The hand-written content of user includes text, can also include color mark to emphasize key content, and color mark can be with It is realized by existing program, for example program is arranged in the font color in word,
The processor after receiving the handwritten content that user is inputted by touch display screen for identifying, after identification The handwritten content be transferred to the display and show;
The battery is used to power to processor and display screen.
The applicating example of the electronic demonstration device:, can be with when people are that trival matters mood agitation needs peace and quiet in coffee shop " Do not disturb " is inputted in touch display screen;In coffee shop, it is desirable to when people being looked for chat the topic of football, can be shown touching Input " chat, football content " on screen;It, can be defeated in touch display screen when thinking merely cuisines topic when people's equal meal at the restaurant Enter " chat, cuisines content " etc., these word contents are showed people at one's side by touch display screen.
The purpose of oneself can be passed through text in public places such as coffee shop, restaurants by electronic demonstration device provided by the invention The form of word is shown in touch display screen, consequently facilitating people at one's side understands the hope of oneself, makes this hope of oneself It hopes and is easier to realize.
In order to facilitate observation, referring to fig. 2, projection arrangement, the projection arrangement and the place are also equipped on the shell Device connection is managed, when in use, the content that people input can be projected into the places such as wall, desk by projection arrangement, so as to It is observed in bystander;When can be also used for people's object for appreciation game, game picture is incident upon the places such as wall, desk, facilitates people Operate, certainly, for ease of operation, USB interface can also be installed on shell, for connecting input unit (such as keyboard, mouse Mark etc.).
At the restaurant, calling set has been widely used, although the application of calling set is brought more convenient, right people, due to meal The uncertainty of shop flow of the people, therefore, what calling set receiver prepared be easy to cause waste too much, sometimes not enough very little, is This, applicant will be equipped with wireless receiving module in the shell, alarm, the wireless receiving mould are equipped on the shell Block and the alarm are connected to the processor respectively, and the processor is also used to control the wireless receiving module and receives spy Determine the signal that the wireless transmitter module of frequency range issues, and controls alarm report after the signal for receiving wireless transmitter module sending It is alert, in this way, the row number signal of the calling system in restaurant can be received by wireless receiving module, when having row number alarm to prompt People's pick-up, alarm can be the alarm of the forms such as existing vibration, light, sound.
In general, the electronic demonstration device using when be placed on the desk in coffee shop or dining room etc., in order to not influence people Using desk, the display device is often placed on the place that table angle etc. is kept to the side, once someone accidentally touches, it is easy to and it falls and falls Bad, for this purpose, applicant has also done following design, referring to Fig. 3-Fig. 6, the bottom surface of the shell 11 is equipped with sucker 12, the suction Disk includes sucker ontology 121 and the fixed part being wholely set with sucker ontology 122, and the fixed part is internally provided with cavity 123, The interior bottom positioned at the cavity of the cavity is circumferentially fixed multiple L shape locating parts 124, in general, multiple L shape locating parts one As be located at same level on, be wholely set with fixed part, piston 125, the piston and multiple institutes be provided in the cavity It states and is provided with spring 126 between L shape locating part;It is provided with sliding slot 111 on the shell, is provided with limiting slot in the sliding slot 112, limiting slot is normally at the middle part or lower part of sliding slot, and sliding shoe 113, one end of the sliding shoe are provided in the sliding slot It is against the slot bottom of the sliding slot, the other end extends the sliding slot and is connected with finger ring 114, in order to people's manual operation, institute It states and is connected with L shape piston rod 115 on sliding block, the opening direction of the L shape piston rod is pushed towards the sliding slot, and in sliding block When to bottom, the bending part of L shape piston rod passes through the top position of the fixed part in the accommodating space, rises in sliding block When top, the bending part of L shape piston rod is located in the strip-shaped hole 128 at the top of the fixed part;In general, the length etc. of bending In strip-shaped hole length or be slightly less than the length of strip-shaped hole, limit piston rod when bending is located in strip-shaped hole and shake, it is described The hole 127 being connected to the cavity is provided in the middle part of sucker ontology, the edge in the hole is located at the inside of the fixed part.
When in use, the bending part that L shape piston rod presses to L shape piston rod can be passed through the fixation by finger ring by people Portion top position in the accommodating space when, at this point, the state of L shape piston rod is as shown in figure 5, be pressed into limiting slot for sliding block Interior, at this point, spring energy-storage, piston slips down to least significant end in accommodating space, which is pushed discharge sucker ontology Gas by electronic demonstration device it is fixed after, pull finger ring, spring reset made to drive piston upwards, at this point, L shape piston rod State is as shown in fig. 6, form negative pressure in sucker body interior, sucker is bonded stronger, also, since the edge in hole is located at institute The inside of fixed part is stated, therefore, the edge in hole is adjacent to desktop, forms secondary seal, electronic demonstration device is firmly fixed to table On son, it is not easy to accidentally be touched off by people, when not needing display device, L shape piston rod is pressed to the folding of L shape piston rod by finger ring Crook passes through the top position of the fixed part in the accommodating space, and piston is made to slip down to least significant end in accommodating space, will Sliding block is pressed into limiting slot, so that the largely or entirely negative pressure of sucker body interior is laid down, after slightly firmly removing display device Storage.
In actual use, when touch display screen is vertical, people stand to be not easy to see clearly in touch display screen when seeing sometimes Content, therefore, for convenience by touch display screen with respect to shell adjust inclination, applicant has also done following design, referring to figure 7- Figure 13 is provided with extension 14 at the top of the shell, and the top of the display screen 13 is articulated on the extension, described Also it is hinged with first connecting rod 15 on shell, the bottom of the display screen is provided with second connecting rod 16, the first connecting rod and described Second connecting rod is connected by limiting device 17;The limiting device includes fixing axle 171 and turntable 172, the fixing axle and institute It states second connecting rod to be fixedly connected, the turntable is fixedly connected with the first connecting rod, and activity is riveted in the fixing axle, can It is realized by the way that blocking is arranged in turntable two sides, naturally it is also possible to be realized with rivet, be not specifically limited herein, use rivet reality Now, rivet can be regarded to a part of fixing axle as, the end of the fixing axle is provided with card slot 173, and the turntable leans on The position of proximal edge, which is provided with, stops column 174, is provided with torsion elastic slice 18 on the turntable, torsion elastic slice can also cry wind spring or One end of wind spring piece, the torsion elastic slice is stuck in the card slot, and the other end is provided with the first barb 175, first barb It is hooked on the blocking column;The outer ring of the torque spring is provided with angling hole 176, and the torque spring is close to the outer ring The outside of one circle is provided with the second barb 177, and it is preferable to use elastic material production for the second barb, for example uses elastic slice or spring system Make, the distance of second barb to first barb is less than the distance of the angling hole to first barb, described to incline One end on the inside of the close torque spring of inclined hole is greater than the close torque spring of the angling hole to the distance of second barb Distance of the one end in outside to second barb, the side of inside of the end of second barb towards the torque spring It is provided with rake 178, the distance at center of the rake close to one end of second barb to the turntable is greater than institute State the distance at center of the one end of rake far from second barb to the turntable;The limiting device further includes protection disk 179, newel 180 is fixed on the protection disk, and the tenon 181 with card slot cooperation is provided on the newel.It needs Illustrate, first connecting rod, second connecting rod and limiting device can be set in the middle position at the display screen back side, can also be Display screen two sides are respectively provided with, and are not specifically limited herein.
During use, people can by display screen along bottom to turning over, first connecting rod and second connecting rod stretching, extension, together When turntable rotated relative to fixed axis, torsion elastic slice is moved closer to from inner ring to the distance between each layer in outer ring, and accumulation of energy, works as inclination When hole moves to the second barb position, the second barb is caught in angling hole, can unclamp hand at this time, is generated in torsion elastic slice accumulation of energy Under reaction force, barb is stuck in angling hole, prevents first connecting rod and second connecting rod from relative rotation, thus by touch display screen Fixed certain angle overturns touch display screen when needing to pack up touch display screen slightly upward, and the second barb is made to be detached from inclination Touch display screen is resetted behind hole, in the case where being movably connected on turntable in fixing axle using rivet, can with it is hand steered live Touch display screen, rotation protection disk make rivet rotation drive turntable rotation that the second barb is made to be detached from angling hole.
Above-described embodiment is the illustration invented, and it is special should not to describe limitation with the exemplary embodiments of specification and attached drawing The protection scope of economic rights.
The preferred embodiments of the disclosure and embodiment are explained in detail above in conjunction with attached drawing, but it is of the invention It is not limited to the above embodiment and embodiment can also not take off within the knowledge of those skilled in the art Various changes can be made under the premise of from present inventive concept.In the claims, any reference between parentheses should not be accorded with Number be used as limitations on claims.Word "comprising" does not exclude the presence of element or step not listed in the claims.Word First, second and the use of third etc. do not indicate any sequence, these words can be construed to title.

Claims (7)

1. a kind of electronic demonstration device, which is characterized in that including shell, touch display screen, the shell are equipped on the shell Processor and battery are inside installed,
The touch display screen is as user's hand input device, and for showing the hand-written content of user,
The processor after receiving the handwritten content that user is inputted by touch display screen for identifying, by the institute after identification It states handwritten content and is transferred to the display and show;
The battery is used to power to processor and display screen.
2. electronic demonstration device according to claim 1, which is characterized in that be also equipped with projection arrangement, institute on the shell Projection arrangement is stated to be connected to the processor.
3. electronic demonstration device according to claim 1, which is characterized in that wireless receiving module is installed in the shell, Alarm is installed on the shell, the wireless receiving module and the alarm are connected to the processor respectively,
The processor is also used to control the wireless receiving module and receives the signal that the wireless transmitter module of special frequency channel issues, And alarm equipment alarm is controlled after the signal for receiving wireless transmitter module sending.
4. electronic demonstration device according to claim 2, which is characterized in that USB interface is also equipped on shell, for connecting Input unit.
5. electronic demonstration device according to claim 1-4, which is characterized in that install the bottom surface of the shell (11) There are sucker (12),
The sucker includes sucker ontology (121) and the fixed part (122) being wholely set with sucker ontology, inside the fixed part It is provided with cavity (123), the bottom in the cavity positioned at the cavity is circumferentially fixed multiple L shape locating parts (124), described It is provided in cavity piston (125), is provided with spring (126) between the piston and multiple L shape locating parts;
It is provided with sliding slot (111), is provided in the sliding slot limiting slot (112) on the shell, be provided with cunning in the sliding slot Motion block (113), one end of the sliding shoe are against the slot bottom of the sliding slot, and the other end extends the sliding slot and is connected with finger ring (114), L shape piston rod (115) is connected on the sliding block, the opening direction of the L shape piston rod towards the sliding slot, and When sliding block is depressed into bottom, the bending part of L shape piston rod passes through the top position of the fixed part in the accommodating space, When sliding block rises to top, the bending part of L shape piston rod is located in the strip-shaped hole (128) at the top of the fixed part;
The hole (127) being connected to the cavity is provided in the middle part of the sucker ontology, the edge in the hole is located at the fixation The inside in portion.
6. electronic demonstration device according to claim 1-4, which is characterized in that be provided with and prolong at the top of the shell Extending portion (14) is articulated on the extension at the top of the display screen (13), is also hinged with first connecting rod on the shell (15), the bottom of the display screen is provided with second connecting rod (16), and the first connecting rod and the second connecting rod pass through limit dress Set (17) connection;
The limiting device include fixing axle (171 and turntable (172), the fixing axle be fixedly connected with the second connecting rod, institute It states turntable to be fixedly connected with the first connecting rod, and activity is riveted in the fixing axle, the end of the fixing axle is provided with Card slot (173), the position by proximal edge of the turntable, which is provided with, stops column (174), is provided with torsion elastic slice on the turntable (18), one end of the torsion elastic slice is stuck in the card slot, and the other end is provided with the first barb (175), first barb It is hooked on the blocking column;
The outer ring of the torque spring is provided with angling hole (176), and the torque spring is close to the outside of a circle of the outer ring It is provided with the second barb (177), the distance of second barb to first barb is less than the angling hole to described first The distance of the distance of barb, one end to second barb on the inside of the close torque spring of the angling hole is greater than the inclination One end on the outside of the close torque spring in hole is to the distance of second barb, and the end of second barb is towards the torsion The side of the inside of spring is provided with rake (178), and the rake is close to one end of second barb to the turntable Center distance be greater than center of the one end of the rake far from second barb to the turntable distance;
The limiting device further includes protection disk (179), is fixed with newel (180) on the protection disk, on the newel It is provided with the tenon (181) with card slot cooperation.
7. electronic demonstration device according to claim 6, which is characterized in that second barb is made using elastic material 's.
CN201910204144.1A 2019-03-18 2019-03-18 Electronic demonstration device Pending CN110085117A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910204144.1A CN110085117A (en) 2019-03-18 2019-03-18 Electronic demonstration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910204144.1A CN110085117A (en) 2019-03-18 2019-03-18 Electronic demonstration device

Publications (1)

Publication Number Publication Date
CN110085117A true CN110085117A (en) 2019-08-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910204144.1A Pending CN110085117A (en) 2019-03-18 2019-03-18 Electronic demonstration device

Country Status (1)

Country Link
CN (1) CN110085117A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101359275A (en) * 2008-09-28 2009-02-04 宇龙计算机通信科技(深圳)有限公司 Handwriting input method for digital equipment, handwriting input device and mobile terminal
CN202301411U (en) * 2011-09-30 2012-07-04 老广新 Sucker type hook
CN102750104A (en) * 2012-06-29 2012-10-24 鸿富锦精密工业(深圳)有限公司 Electronic device with touch input unit
US20130093733A1 (en) * 2010-04-13 2013-04-18 Kenji Yoshida Handwriting input board and information processing system using handwriting input board
CN204904765U (en) * 2015-09-12 2015-12-23 胡强 Arc LED display screen based on handwriting input technique
CN206040180U (en) * 2016-08-31 2017-03-22 厦门轻游信息科技有限公司 Man -machine interactive advertisement display device
CN206097545U (en) * 2016-08-11 2017-04-12 尹芳 Multi -functional tourism management board of imparting knowledge to students
CN109343809A (en) * 2018-09-10 2019-02-15 天津大学 A kind of interaction display screen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101359275A (en) * 2008-09-28 2009-02-04 宇龙计算机通信科技(深圳)有限公司 Handwriting input method for digital equipment, handwriting input device and mobile terminal
US20130093733A1 (en) * 2010-04-13 2013-04-18 Kenji Yoshida Handwriting input board and information processing system using handwriting input board
CN202301411U (en) * 2011-09-30 2012-07-04 老广新 Sucker type hook
CN102750104A (en) * 2012-06-29 2012-10-24 鸿富锦精密工业(深圳)有限公司 Electronic device with touch input unit
CN204904765U (en) * 2015-09-12 2015-12-23 胡强 Arc LED display screen based on handwriting input technique
CN206097545U (en) * 2016-08-11 2017-04-12 尹芳 Multi -functional tourism management board of imparting knowledge to students
CN206040180U (en) * 2016-08-31 2017-03-22 厦门轻游信息科技有限公司 Man -machine interactive advertisement display device
CN109343809A (en) * 2018-09-10 2019-02-15 天津大学 A kind of interaction display screen

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