CN116527834B - Campus face high-definition video public telephone device based on VOIP - Google Patents
Campus face high-definition video public telephone device based on VOIP Download PDFInfo
- Publication number
- CN116527834B CN116527834B CN202310472024.6A CN202310472024A CN116527834B CN 116527834 B CN116527834 B CN 116527834B CN 202310472024 A CN202310472024 A CN 202310472024A CN 116527834 B CN116527834 B CN 116527834B
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- CN
- China
- Prior art keywords
- cover
- sliding
- sliding cover
- dust
- dust removing
- 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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- 239000000428 dust Substances 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000007790 scraping Methods 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000004891 communication Methods 0.000 claims description 7
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 229920000742 Cotton Polymers 0.000 claims description 4
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/141—Systems for two-way working between two video terminals, e.g. videophone
- H04N7/147—Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention provides a campus face high-definition video public telephone device based on VOIP, when a call handle is taken down, a hook switch is sprung, a control module drives a starting sliding mechanism to drive a sliding cover to move, in the moving process of the sliding cover, a dust cover is lifted up and moves along with the sliding cover under the action of a guide groove, the sliding cover and the dust cover are far away from a touch screen board, and the touch screen board is opened, so that a user can perform video call operation; the dust removing device comprises a sliding cover, a dust removing plate, a dust removing cover, a driving mechanism and a dust removing mechanism, wherein the driving mechanism can drive the dust removing plate to move through the driving mechanism in the sliding cover moving process, the dust removing plate and the dust removing cover form linkage, and the dust removing plate moves to the touch screen plate to carry out dust removing work after the dust removing cover rises; when hanging up the phone and resetting the call handle, the hook switch is pressed down, the control module drives the sliding cover to reset through the sliding mechanism, the dust cover covers the touch screen panel again, the control module starts the disinfection lamp to work for a certain time and then closes, a certain dustproof and disinfection effect is achieved, and good safety performance is achieved when high-definition video call is achieved.
Description
Technical Field
The invention relates to the technical field of campus communication, in particular to a campus face high-definition video public telephone device based on VOIP.
Background
The middle and primary school stage is an important stage in the life of a person, and the study and life management of the middle and primary school students also attracts more and more attention of parents and schools. Because the self-distinguishing and preventing capability of students in middle and primary schools is weak, the time management and control capability is weak, the entertainment of the smart phone is stronger and stronger, and the use of the smart phone brings a lot of negative effects to the students, so that the students are not allowed to use the mobile phone in many schools, but the contact between the students and parents is cut off when the mobile phone is forbidden to enter the schools, so that the students can be ensured to learn in concentration, and the contact with the parents is kept.
VOIP is a voice call technology based on voice transmission, which is characterized in that voice data codes are compressed through a voice compression algorithm, then the voice data are packed, data packets are sent to a receiving place through a network, the voice data packets are strung together and restored to original voice signals after decompression processing.
Disclosure of Invention
The invention aims to solve the problems by providing a campus face high-definition video public telephone device based on VOIP aiming at the defects in the technology.
The invention provides a campus face high-definition video public telephone device based on VOIP, comprising:
the base telephone is provided with a control module, a VOIP telephone module, a communication module, a card reader, a touch screen board and a front camera, wherein the VOIP telephone module, the communication module, the card reader, the touch screen board and the front camera are electrically connected with the control module;
a conversation handle, wherein a placing groove for placing the conversation handle is formed in the base machine, and a fork switch is arranged at the placing groove;
the sliding cover is movably arranged on the base machine and can cover the touch screen board, and a sterilizing lamp is arranged on the sliding cover;
the sliding mechanism is in transmission connection with the sliding cover and can drive the sliding cover to move;
the dustproof cover is a transparent cover capable of transmitting light, is in sliding connection with the sliding cover and can lift relative to the sliding cover, can tightly cover the touch screen board, and is provided with a guide groove capable of guiding the sliding cover to lift;
a dust scraping plate movably mounted on the base machine;
the transmission mechanism is in transmission connection with the dust scraping plate and can drive the dust scraping plate to reversely move relative to the sliding cover in the moving direction according to the moving process of the sliding cover;
the control module is respectively and electrically connected with the hook switch, the sterilizing lamp and the sliding mechanism.
Preferably, the sliding mechanism comprises a driving motor and a screw, the driving motor is arranged on the base machine, the driving motor is in transmission connection with the screw and can drive the screw to rotate, and the sliding cover is provided with a screw hole matched with the screw.
Preferably, the dust cover is provided with a sliding rod, and the sliding cover is provided with a sliding groove for the sliding rod to vertically move.
Preferably, the guide groove includes a horizontal guide groove and an inclined guide groove, and the slide bar is movable along the horizontal guide groove and the inclined guide groove.
Preferably, the transmission mechanism comprises a first air cylinder, a first piston rod, a second air cylinder, a second piston rod and a communicating pipe, wherein the first air cylinder and the second air cylinder are arranged on the base machine and are communicated with the bottoms of the two air cylinders through the communicating pipe, the first piston rod is movably arranged on the first air cylinder, the second piston rod is movably arranged on the second air cylinder, the first piston rod is connected with the sliding cover, and the second piston rod is connected with the dust scraping plate and can drive the dust scraping plate to move.
Preferably, the bottom area of the second inflator cavity is smaller than the bottom area of the first inflator cavity.
Preferably, the bottom of the dust scraping plate is provided with a cotton sliver.
Preferably, the base unit is provided with a voice prompt, and the control module is electrically connected with the voice prompt.
Preferably, a sealing rubber strip is arranged on the periphery of the bottom of the dust cover.
Compared with the prior art, the invention has the following beneficial effects:
the control module drives the starting sliding mechanism to drive the sliding cover to move, the dust cover is lifted and moves along with the sliding cover under the action of the guide groove in the sliding cover moving process, the sliding cover and the dust cover are far away from the touch screen board, the touch screen board is opened, and a user can perform video call operation; the dust removing device comprises a sliding cover, a dust removing plate, a dust removing cover, a driving mechanism and a dust removing mechanism, wherein the driving mechanism can drive the dust removing plate to move through the driving mechanism in the sliding cover moving process, the dust removing plate and the dust removing cover form linkage, and the dust removing plate moves to the touch screen plate to carry out dust removing work after the dust removing cover rises; when hanging up the phone and resetting the call handle, the hook switch is pressed down, the control module drives the sliding cover to reset through the sliding mechanism, the dust cover covers the touch screen panel again, the control module starts the disinfection lamp to work for a certain time and then closes, a certain dustproof and disinfection effect is achieved, and good safety performance is achieved when high-definition video call is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only preferred embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an external structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a switch in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an internal structure of an embodiment of the present invention;
FIG. 4 is a schematic diagram of a transmission mechanism according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a sliding cover, a dust cover and a touch panel according to an embodiment of the invention.
In the figure, 1-base unit; 11-a touch panel; 12-a front camera; 13-a hook switch; 2-a call handle; 3-sliding cover; 31-a chute; 4-a sliding mechanism; 41-a drive motor; 42-screw; 5-a dust cap; 51-slide bar; 6-a guide groove; 61-a horizontal guide slot; 62-inclined guide slots; 7-a dust scraping plate; 8-a transmission mechanism; 81-a first inflator; 82-a first piston rod; 83-a second cylinder; 84-a second piston rod; 85-communicating pipe; 9-voice prompter.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
Example 1:
referring to fig. 1 to 5, the present invention provides a campus face high definition video public telephone device based on VOIP, including:
the base telephone 1 is provided with a control module, a VOIP telephone module, a communication module, a card reader, a touch screen panel 11 and a front camera 12 which are electrically connected with the control module;
a conversation handle 2, wherein a placing groove for placing the conversation handle 2 is formed in the base unit 1, and a hook switch 13 is arranged at the placing groove;
a sliding cover 3, wherein the sliding cover 3 is movably installed on the base unit 1 and can cover the touch screen panel 11, and a sterilizing lamp is arranged on the sliding cover 3;
the sliding mechanism 4 is in transmission connection with the sliding cover 3 and can drive the sliding cover 3 to move;
the dustproof cover 5 is a transparent cover capable of transmitting light, the dustproof cover 5 is in sliding connection with the sliding cover 3 and can lift relative to the sliding cover 3, the dustproof cover 5 can tightly cover the touch screen panel 11, and the base machine 1 is provided with a guide groove 6 capable of guiding the sliding cover 3 to lift;
a dust scraper 7, said dust scraper 7 being movably mounted on said base unit 1;
the transmission mechanism 8 is in transmission connection with the dust scraping plate 7 and can drive the dust scraping plate 7 to reversely move relative to the moving direction of the sliding cover 3 according to the moving process of the sliding cover 3;
the control module is electrically connected with the hook switch 13, the sterilizing lamp and the sliding mechanism 4 respectively.
The control module, the VOIP telephone module, the touch screen panel 11, the front camera 12 and the communication module are matched to realize network video call, when the call handle 2 is taken down to carry out the call, the hook switch 13 is sprung, the control module drives the starting sliding mechanism 4 to drive the sliding cover 3 to move, in the moving process of the sliding cover 3, the dust cover 5 is lifted and moves along with the sliding cover 3 under the action of the guide groove 6, the sliding cover 3 and the dust cover 5 are far away from the touch screen panel 11, the touch screen panel 11 is opened, and a user can carry out video call operation; the transmission mechanism 8 can drive the dust scraping plate 7 to move through the transmission mechanism 8 in the moving process of the sliding cover 3, the dust scraping plate 7 and the dust cover 5 form linkage, and the dust scraping plate 7 moves to the touch screen plate 11 to carry out dust cleaning work after the dust cover 5 rises; when the telephone is hung up and the call handle 2 is reset, the hook switch 13 is pressed down, the control module drives the sliding cover 3 to reset through the sliding mechanism 4, the dust cover 5 covers the touch screen panel 11 again, the control module starts the disinfection lamp to work for a certain time and then is closed, a certain dustproof and disinfection effect is achieved, and good safety performance is achieved when high-definition video call is achieved. Wherein, control module is the start-up to the system that a plurality of STM32 singlechip are constituteed, and the sterilamp is UVC ultraviolet ray sterilamp.
Specifically, the sliding mechanism 4 includes a driving motor 41 and a screw 42, the driving motor 41 is disposed on the base unit 1, the driving motor 41 is in transmission connection with the screw 42 and can drive the screw 42 to rotate, and the sliding cover 3 is provided with a screw hole matched with the screw 42.
Specifically, the dust cover 5 is provided with a slide bar 51, and the slide cover 3 is provided with a slide groove 31 for the slide bar 51 to move vertically.
Specifically, the guide groove 6 includes a horizontal guide groove 61 and an inclined guide groove 62, and the slide bar 51 is movable along the horizontal guide groove 61 and the inclined guide groove 62.
When the sliding cover 3 drives the dust cover 5 to move downwards, the sliding rod 51 moves towards the horizontal guide groove 61 along the inclined guide groove 62 under the limiting action of the sliding groove 31, namely the dust cover 5 rises relative to the touch screen panel 11 and is away from the touch screen panel 11 along with the sliding cover 3; when the sliding cover 3 drives the dust cover 5 to move upwards, the sliding rod 51 moves along the horizontal guide groove 61, the dust cover 5 approaches to the touch screen, and when the sliding rod 51 moves to the inclined guide groove 62 and moves along the inclined guide groove 62, the dust cover 5 presses down until covering the touch screen panel 11, so that the dust-proof work of the touch screen panel 11 is realized.
Example 2:
referring to fig. 1 to 5, in combination with the technical solution of embodiment 1, in this embodiment, the transmission mechanism 8 includes a first air cylinder 81, a first piston rod 82, a second air cylinder 83, a second piston rod 84, and a communicating pipe 85, both the first air cylinder 81 and the second air cylinder 83 are disposed on the base unit 1 and communicate bottoms of the two air cylinders through the communicating pipe 85, the first piston rod 82 is movably mounted on the first air cylinder 81, the second piston rod 84 is movably mounted on the second air cylinder 83, the first piston rod 82 is connected with the sliding cover 3, and the second piston rod 84 is connected with the dust scraping plate 7 and can drive the dust scraping plate 7 to move.
Specifically, the bottom area of the inner cavity of the second air cylinder 83 is smaller than the bottom area of the inner cavity of the first air cylinder 81.
Through the cooperation of the first air cylinder 81 and the second air cylinder 83, when the sliding cover 3 moves downwards and drives the first piston rod 82 to move, air in the first air cylinder 81 is discharged into the second air cylinder 83, the second piston rod 84 is pushed to move under the action of air pressure, the second piston rod 84 drives the dust scraping plate 7 to move, wherein the bottom area of the inner cavity of the second air cylinder 83 is smaller than that of the inner cavity of the first air cylinder 81, through the size design, the stroke amount of the second piston rod 84 is larger than that of the first piston rod 82, namely, when the dust cover 5 is lifted to the top, the dust scraping plate 7 just moves to the bottom position of the touch screen 11, and the second piston rod 84 can push the dust scraping plate 7 to perform dust removal on the touch screen 11 after the dust cover 5 is lifted.
Example 3:
referring to fig. 1 to 5, in the present embodiment, a cotton sliver is provided at the bottom of the dust scraping plate 7 in combination with the technical solutions of embodiment 1 and embodiment 2. The dust removal effect of the dust scraping plate 7 is improved by arranging a cotton sliver at the bottom of the dust scraping plate 7.
Specifically, the base unit 1 is provided with a voice prompt 9, and the control module is electrically connected with the voice prompt 9.
The voice prompt device 9 is matched with the control module to realize the voice operation prompt function.
Specifically, a sealing rubber strip is arranged on the periphery of the bottom of the dust cover 5.
Sealing properties when the dust cover 5 covers the touch panel 11 are improved by providing a sealing strip on the periphery of the bottom portion against dust.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the disclosed technology. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technology of the present invention fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a campus face high definition video public telephone device based on VOIP which characterized in that includes:
the base telephone is provided with a control module, a VOIP telephone module, a communication module, a card reader, a touch screen board and a front camera, wherein the VOIP telephone module, the communication module, the card reader, the touch screen board and the front camera are electrically connected with the control module;
a conversation handle, wherein a placing groove for placing the conversation handle is formed in the base machine, and a fork switch is arranged at the placing groove;
the sliding cover is movably arranged on the base machine and can cover the touch screen board, and a sterilizing lamp is arranged on the sliding cover;
the sliding mechanism is in transmission connection with the sliding cover and can drive the sliding cover to move;
the dustproof cover is a transparent cover capable of transmitting light, is in sliding connection with the sliding cover and can lift relative to the sliding cover, can tightly cover the touch screen board, and is provided with a guide groove capable of guiding the sliding cover to lift;
a dust scraping plate movably mounted on the base machine;
the transmission mechanism is in transmission connection with the dust scraping plate and can drive the dust scraping plate to reversely move relative to the sliding cover in the moving direction according to the moving process of the sliding cover;
the control module is respectively and electrically connected with the hook switch, the sterilizing lamp and the sliding mechanism, and can control the working states of the sterilizing lamp and the sliding mechanism according to the working states of the hook switch;
the dust cover is provided with a sliding rod, and the sliding cover is provided with a sliding groove for the sliding rod to move vertically;
the guide groove comprises a horizontal guide groove and an inclined guide groove, and the sliding rod can move along the horizontal guide groove and the inclined guide groove;
the transmission mechanism comprises a first air cylinder, a first piston rod, a second air cylinder, a second piston rod and a communicating pipe, wherein the first air cylinder and the second air cylinder are arranged on the base machine and are communicated with the bottoms of the two air cylinders through the communicating pipe, the first piston rod is movably arranged on the first air cylinder, the second piston rod is movably arranged on the second air cylinder, the first piston rod is connected with the sliding cover, and the second piston rod is connected with the dust scraping plate and can drive the dust scraping plate to move;
the bottom area of the second air cylinder inner cavity is smaller than that of the first air cylinder inner cavity.
2. The campus face high-definition video public telephone device based on VOIP according to claim 1, wherein:
the sliding mechanism comprises a driving motor and a screw, the driving motor is arranged on the base machine, the driving motor is in transmission connection with the screw and can drive the screw to rotate, and a screw hole matched with the screw is formed in the sliding cover.
3. The campus face high-definition video public telephone device based on VOIP according to claim 1, wherein:
the bottom of the dust scraping plate is provided with a cotton sliver.
4. The campus face high-definition video public telephone device based on VOIP according to claim 1, wherein:
the base phone is provided with a voice prompt, and the control module is electrically connected with the voice prompt.
5. The campus face high-definition video public telephone device based on VOIP according to claim 1, wherein:
and sealing rubber strips are arranged on the periphery of the bottom of the dust cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472024.6A CN116527834B (en) | 2023-04-27 | 2023-04-27 | Campus face high-definition video public telephone device based on VOIP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472024.6A CN116527834B (en) | 2023-04-27 | 2023-04-27 | Campus face high-definition video public telephone device based on VOIP |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116527834A CN116527834A (en) | 2023-08-01 |
| CN116527834B true CN116527834B (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310472024.6A Active CN116527834B (en) | 2023-04-27 | 2023-04-27 | Campus face high-definition video public telephone device based on VOIP |
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| Country | Link |
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| CN (1) | CN116527834B (en) |
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| CN207473572U (en) * | 2017-11-08 | 2018-06-08 | 东莞市展程机电设备有限公司 | A kind of novel touch screen |
| CN209562640U (en) * | 2019-03-18 | 2019-10-29 | 上海市共进通信技术有限公司 | Intelligent doorway machine based on VOIP |
| CN111092979A (en) * | 2019-12-29 | 2020-05-01 | 杭州宽福科技有限公司 | Fixing device for wall-mounted landline telephone |
| CN111371935A (en) * | 2018-12-25 | 2020-07-03 | 广州萌优客教育科技有限公司 | Communication telephone with dustproof function |
| WO2022003218A1 (en) * | 2020-06-29 | 2022-01-06 | Leopoldo Fabra Utray | Mobile cleaning, air-freshening and disinfecting robot |
| CN218004085U (en) * | 2022-05-31 | 2022-12-09 | 华芯科技(恩施)有限公司 | LCD touch screen with antibacterial function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9995995B2 (en) * | 2016-11-10 | 2018-06-12 | E-Lead Electronic Co., Ltd. | Head-up display device with dust cover |
-
2023
- 2023-04-27 CN CN202310472024.6A patent/CN116527834B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130085574A (en) * | 2012-01-20 | 2013-07-30 | 권오관 | Multi accessory apparatus for a mobile phone |
| CN207473572U (en) * | 2017-11-08 | 2018-06-08 | 东莞市展程机电设备有限公司 | A kind of novel touch screen |
| CN111371935A (en) * | 2018-12-25 | 2020-07-03 | 广州萌优客教育科技有限公司 | Communication telephone with dustproof function |
| CN209562640U (en) * | 2019-03-18 | 2019-10-29 | 上海市共进通信技术有限公司 | Intelligent doorway machine based on VOIP |
| CN111092979A (en) * | 2019-12-29 | 2020-05-01 | 杭州宽福科技有限公司 | Fixing device for wall-mounted landline telephone |
| WO2022003218A1 (en) * | 2020-06-29 | 2022-01-06 | Leopoldo Fabra Utray | Mobile cleaning, air-freshening and disinfecting robot |
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| Publication number | Publication date |
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| CN116527834A (en) | 2023-08-01 |
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