CN211252510U - Driver protector and vehicle - Google Patents
Driver protector and vehicle Download PDFInfo
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- CN211252510U CN211252510U CN201921762652.3U CN201921762652U CN211252510U CN 211252510 U CN211252510 U CN 211252510U CN 201921762652 U CN201921762652 U CN 201921762652U CN 211252510 U CN211252510 U CN 211252510U
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- display screen
- transparent plate
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- enclosure
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Abstract
The utility model relates to a driver protector and vehicle, driver protector include surrounding structure and display screen. The enclosing structure comprises a frame, a transparent plate and a rear cover, the transparent plate is arranged on the frame, the rear cover is arranged on the transparent plate, and an accommodating cavity is formed between the transparent plate and the rear cover. The display screen sets up in holding the cavity, and the transparent plate corresponds the setting with the display surface of display screen. Set up the display screen in holding the cavity, protect the display screen through transparent plate and back lid, reduce the damage of external materials such as dust, water to the display screen to the life of extension display screen. In addition, the display screen sets up in holding the cavity, and the removal of display screen is retrained from a plurality of directions to transparent plate and back lid to increase the stability that the display screen was installed on enclosing the structure.
Description
Technical Field
The utility model relates to the technical field of vehicles, especially, relate to a driver protector and vehicle.
Background
Along with the continuous improvement of urban traffic, more and more passenger trains are provided, and more passengers take the passenger trains. In recent years, a phenomenon in which passengers disturb a driver frequently occurs, which affects safe operation of a vehicle. In order to reduce the accident rate and the property loss rate, it is a common practice to install a guard rail beside the driver's seat, and to separate the driver and the passenger through the guard rail. In order to fully utilize the guard rail, a display screen is installed on the guard rail to display a route, display an advertisement, and the like. However, the conventional display screen is exposed, the display screen is easily damaged, and the installation stability of the display screen is poor.
SUMMERY OF THE UTILITY MODEL
Therefore, a driver protection device and a vehicle are needed, which can prolong the service life of the display screen and increase the installation stability of the display screen.
A driver protection device comprises a surrounding structure and a display screen, wherein the surrounding structure comprises a frame, a transparent plate and a rear cover, the transparent plate is arranged on the frame, the rear cover is arranged on the transparent plate, and an accommodating cavity is formed between the transparent plate and the rear cover; the display screen is arranged in the accommodating cavity, and the transparent plate is arranged corresponding to the display surface of the display screen.
The driver protection device at least has the following advantages:
above-mentioned driver protector, transparent plate setting are on the frame, and the back lid is established on the transparent plate to form the accommodation cavity that supplies the display screen to put into. Set up the display screen in holding the cavity, protect the display screen through transparent plate and back lid, reduce the damage of external materials such as dust, water to the display screen to the life of extension display screen. In addition, the display screen sets up in holding the cavity, and the removal of display screen is retrained from a plurality of directions to transparent plate and back lid to increase the stability that the display screen was installed on enclosing the structure.
In one embodiment, the driver protection device further comprises a fixing bracket, one end of the fixing bracket is connected to the display screen, and the other end of the fixing bracket is connected to the frame.
In one embodiment, one end of the fixed bracket is provided with a first mounting hole, and the first mounting hole corresponds to the frame; and a second mounting hole is formed in the other end of the fixed support and corresponds to the side face of the display screen.
In one embodiment, the driver guard further comprises a trim panel disposed on the frame, the transparent panel, and the trim panel forming an enclosure.
In one embodiment, the enclosure further comprises a side enclosure, a back enclosure connected to the side enclosure, and a guard door pivotally connected to the side enclosure.
In one embodiment, the connection between the side enclosure and the rear enclosure is an arc-shaped structure.
In one embodiment, the driver protection device further comprises a heat dissipation member, the heat dissipation member is arranged in the accommodating cavity, and the rear cover is provided with heat dissipation holes.
In one embodiment, the display screen is used for electrically connecting a station reporter; and/or a USB interface is arranged on the display screen; and/or a network port is arranged on the display screen; and/or the display screen is provided with an SIM card port.
In one embodiment, the display screen comprises a touch panel, a touch module and an electric control board, wherein the touch module is arranged on the touch panel and is electrically connected with the electric control board; the touch panel is provided with a point touch area, a sliding touch area and/or an information display area, the electric control board is provided with a touch module, a main chip and a display module, the touch module is used for sensing a hand-pointing touch or sliding touch action, and the main chip is used for driving the display module to display information.
A vehicle comprises a vehicle body and the driver protection device, wherein the driver protection device is arranged in the vehicle body.
In the vehicle, the transparent plate is arranged on the frame, and the rear cover is arranged on the transparent plate to form an accommodating cavity for the display screen to be placed in. Set up the display screen in holding the cavity, protect the display screen through transparent plate and back lid, reduce the damage of external materials such as dust, water to the display screen to the life of extension display screen. In addition, the display screen sets up in holding the cavity, and the removal of display screen is retrained from a plurality of directions to transparent plate and back lid to increase the stability that the display screen was installed on enclosing the structure.
Drawings
Fig. 1 is an exploded view of a driver guard according to an embodiment of the present invention;
fig. 2 is a rear view of a side enclosure of a driver guard according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a fixing bracket in the driver protection device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a display screen in the driver protection device according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a working principle of a touch display screen in the driver protection device according to an embodiment of the present invention.
Description of reference numerals:
10. the enclosure structure comprises an enclosure structure 11, a side enclosure, 12, a rear enclosure, 13, a frame, 131, a stand column, 132, a first beam, 133, a second beam, 134, a third beam, 14, a transparent plate, 15, a rear cover, 16, a decorative plate, 20, a display screen, 30, a fixed support, 31, a first fixed plate, 311, a first mounting hole, 32, a second fixed plate, 321 and a second mounting hole.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Referring to fig. 1, an embodiment of a driver protection device includes an enclosure 10 and a display screen 20. The enclosing structure 10 comprises a frame 13, a transparent plate 14 and a back cover 15, wherein the transparent plate 14 is arranged on the frame 13, the back cover 15 is arranged on the transparent plate 14 in a covering mode, and an accommodating cavity is formed between the transparent plate 14 and the back cover 15. The display screen 20 is arranged in the accommodating cavity, and the transparent plate 14 is arranged corresponding to the display surface of the display screen 20.
In the driver protection device, the transparent plate 14 is disposed on the frame 13, and the rear cover 15 is disposed on the transparent plate 14 to form a receiving cavity for the display screen 20 to be placed therein. The display screen 20 is arranged in the accommodating cavity, the display screen 20 is protected through the transparent plate 14 and the rear cover 15, damage to the display screen 20 caused by external substances such as dust, water and the like is reduced, and therefore the service life of the display screen 20 is prolonged. In addition, the display screen 20 is disposed within the receiving cavity, and the transparent plate 14 and the rear cover 15 restrict movement of the display screen 20 from multiple directions, thereby increasing stability of the display screen 20 mounted on the enclosure structure 10.
Specifically, the transparent plate 14 is a high-transparency acrylic plate, tempered glass, or the like. On the one hand, through the transparent plate 14, the passenger can see the display contents on the display screen 20; on the other hand, the transparent plate 14 can protect the display 20 and prevent the display 20 from being damaged, thereby prolonging the service life of the display 20.
Further, referring to fig. 1 to 3, the driver protection device further includes a fixing bracket 30, one end of the fixing bracket 30 is connected to the display screen 20, and the other end of the fixing bracket 30 is connected to the frame 13. The display screen 20 is firmly mounted on the frame 13 through the fixing bracket 30, so that the display screen 20 can be prevented from shaking. In this embodiment, the fixing bracket 30 is used to mount the display screen 20 without a frame. Compared with the traditional installation mode of the display screen 20, the installation mode of the display screen 20 in the embodiment can save the material cost of the installation frame of the display screen 20, and can also reduce the waste of space.
Specifically, referring to fig. 1 and 3, the fixing bracket 30 is L-shaped. One end of the fixing bracket 30 is provided with a first mounting hole 311, and the position of the first mounting hole 311 corresponds to the position of the frame 13. The other end of the fixing bracket 30 is provided with a second mounting hole 321, and the position of the second mounting hole 321 corresponds to the side surface of the display screen 20. Specifically, the fixing bracket 30 includes a first fixing plate 31 disposed horizontally and a second fixing plate 32 disposed vertically, the first mounting hole 311 is disposed on the first fixing plate 31, and the second mounting hole 321 is disposed on the second fixing plate 32. The first fastening member is inserted into the first mounting hole 311, and the fixing bracket 30 is detachably mounted on the frame 13 by the first fastening member. By detaching the first fastening member, the display screen 20 is easily detached from the frame 13, so that the display screen 20 can be easily replaced and maintained. The second fastening member is inserted into the second mounting hole 321, and the display screen 20 is detachably connected to the fixing bracket 30 by the second fastening member.
In the present embodiment, six fixing brackets 30 are provided, wherein three fixing brackets 30 are provided at intervals on one side of the display screen 20, and the other three fixing brackets 30 are provided at intervals on the other side of the display screen 20. Of course, the fixing brackets 30 may be disposed around the display panel 20 to firmly mount the display panel 20 on the frame 13. The number and the position of the fixing brackets 30 can be set according to actual requirements, such as the weight of the display screen 20, the degree of road bumpiness, and the like, but not limited thereto.
Further, referring to fig. 1, the rear cover 15 protrudes to form a certain space so as to completely surround the display screen 20. On one hand, the rear cover 15 covers the display screen 20, so that the display screen 20 can be protected; on the other hand, the wires of the display screen 20 can be hidden inside the rear cover 15, making the enclosure 10 cleaner.
In another embodiment, the display screen 20 is mounted on the rear cover 15 by using the fixing bracket 30, the rear cover 15 is slidably connected with the frame 13, and the position of the display screen 20 can be adjusted by moving the rear cover 15 upwards or downwards. Specifically, a slide groove is provided in the thickness direction of the frame 13, the slide groove being located inside the frame 13. Flanges on both sides of the rear cover 15 are located in the slide grooves, and the rear cover 15 is fixed to the frame 13 by screws, bolts, or the like. When the height of the display screen 20 needs to be adjusted, the screws, bolts, etc. are removed, and the rear cover 15 is pushed or pulled. After the display screen 20 is moved to a suitable height, the rear cover 15 is fixed to the frame 13 by screws, bolts, or the like.
In one embodiment, referring to fig. 1 and 2, the frame 13 includes a column 131 and a beam disposed on the column 131. Specifically, two columns 131 are provided, and the two columns 131 are disposed opposite to each other. The cross members are provided in three, a first cross member 132, a second cross member 133 and a third cross member 134. The two ends of the first beam 132 are connected to the top ends of the two columns 131, the two ends of the second beam 133 are connected to the bottom ends of the two columns 131, the third beam 134 is connected to the two columns 131, and the third beam 134 is located between the first beam 132 and the second beam 133. First beam 132, third beam 134 and upright 131 enclose a first mounting area in which transparent panel 14 is disposed. The second beam 133, the third beam 134 and the upright 131 are surrounded to form a second mounting area, and the decorative plate 16 is arranged in the second mounting area.
The decorative plate 16 may be transparent glass. By mounting the transparent glass on the frame 13, it is convenient for the driver to observe the dynamic state in the vehicle, and simultaneously, it is also convenient for the passenger to observe the driving state of the driver. Of course, the decorative plate 16 may be an aluminum alloy plate, which separates the driver from the passenger; on the other hand, aluminum alloys may reduce the weight of the enclosure structure 10, thereby reducing the capacity of the vehicle.
In another embodiment, the enclosure structure 10 is a guard rail structure. A transparent plate 14 is installed on the guard rail, a rear cover 15 covers the transparent plate 14, an accommodating cavity is formed between the transparent plate 14 and the rear cover 15, and a display screen 20 is installed in the accommodating cavity.
Further, referring to fig. 1, the enclosure structure 10 includes a side enclosure 11, a rear enclosure 12, and a guard door, the side enclosure 11 being located at a side of the driver's seat, and the rear enclosure 12 being located at a rear of the driver's seat. Specifically, one side of the rear enclosure 12 is connected to the vehicle body, the other side of the rear enclosure 12 is connected to the side enclosure 11, and the guard door is rotatably connected to the side enclosure 11. Alternatively, in another embodiment, the enclosure structure 10 includes a side enclosure 11 and a rear enclosure 12 connected together, and the side enclosure 11 and the front end of the vehicle body reserve a space for a driver to enter the driver's seat. Of course, the enclosure 10 may also comprise a rear enclosure 12 and a guard door, which is rotatably arranged on the rear enclosure 12.
Specifically, the protective door comprises a door frame and transparent glass, wherein the transparent glass is arranged on the door frame. Through the transparent glass, a driver can observe the getting-on condition of passengers so as to better control the time for starting the vehicle, and meanwhile, the driver is convenient to get off the interior of the vehicle and timely cope with emergencies.
In one embodiment, the transparent glass on the protective door is electrochromic glass. Under the action of an electric field, the electrochromic glass has adjustability of light absorption and transmission, and can selectively absorb or reflect external heat radiation. Meanwhile, when displaying colors, the electrochromic glass can effectively block most of infrared light and visible light, and plays a role in adjusting light, so that the anti-dazzle effect is realized, and driving is safer.
Further, referring to fig. 1, a first installation area and a second installation area are disposed on the side enclosure 11 and the rear enclosure 12, the transparent plate 14 is installed in the first installation area, and the decorative plate 16 is installed in the second installation area, so that the enclosure structure 10 of the present embodiment is a full enclosure structure 10. The full enclosure structure 10 can completely isolate passengers from drivers, prevent passengers from interfering with drivers, and reduce accident rate and property loss rate.
In one embodiment, referring to fig. 1, the display screen 20 is embedded in both the side enclosure 11 and the rear enclosure 12, so that the space of the side enclosure 11 and the rear enclosure 12 can be fully utilized, and the passengers can conveniently view the display contents on the display screen 20 from the side and the rear of the enclosure 10. Of course, the number and the arrangement position of the display screens 20 may be set according to actual requirements, for example, one display screen 20 is arranged, the display screen 20 is arranged on the rear enclosure 12, or the display screen 20 is arranged on the side enclosure 11, which is not limited to this.
Further, the junction of the side enclosure 11 and the rear enclosure 12 is an arc-shaped structure, so that the enclosure 10 can be prevented from hurting passengers in the vehicle, and the use safety of the enclosure 10 is improved.
In one embodiment, the driver guard further comprises a heat sink disposed within the receiving cavity, the display screen 20 being disposed within the heat sink. Specifically, the heat sink comprises a shell, and the top of the shell is provided with a ventilation cylinder which has a self-absorption function; the shell is also provided with an air inlet. The ventilation cylinders have different calibers, for example, the ventilation cylinders are in a trumpet shape. The display screen 20 can generate heat after working for a long time, and in the process that hot air around the display screen 20 rises along the inner wall of the ventilation cylinder, the air pressure at the part can be reduced due to the fact that the caliber of the ventilation cylinder becomes thick, and a low-pressure area is formed. Due to the action of the low pressure, air outside the heat dissipation piece is sucked into the heat dissipation piece from the air inlet hole and then into the ventilation cylinder, and the process is repeated. The circulation of air in the radiating piece can be realized through the ventilation cylinder, the heat generated by the display screen 20 is convenient to take away, and the effect of reducing the temperature in the display screen 20 is achieved.
Specifically, the rear cover 15 is provided with heat dissipation holes through which external cold air enters the accommodating cavity and is sucked into the heat dissipation member to reduce the temperature of the display screen 20. Simultaneously, the hot-air that looses in the section of thick bamboo from ventilative passes through this louvre, can get into the external world to the circulation that the cavity internal and external air was held in the realization.
In another embodiment, the heat sink includes a first ceramic sheet, a second ceramic sheet, an N-type semiconductor, a P-type semiconductor, a first metal sheet, and a second metal sheet, and is used for dissipating heat of the display lamp of the display screen 20. Specifically, the first metal sheet is arranged on the first ceramic sheet, the second metal sheet is arranged on the second ceramic sheet, and the N-type semiconductor and the P-type semiconductor are arranged at intervals. One end of the N-type semiconductor is connected to the first metal sheet, and the other end of the N-type semiconductor is connected to the second metal sheet. Similarly, one end of the P-type semiconductor is connected to the first metal sheet, and the other end of the P-type semiconductor is connected to the second metal sheet, so that the N-type semiconductor and the P-type semiconductor are connected to form a loop. The first ceramic piece is a cold end, the second ceramic piece is a hot end, and the first ceramic piece corresponds to the radiating holes of the rear cover 15, so that the temperature of the air around the display lamp can be reduced, and the radiating purpose is achieved.
Further, referring to fig. 4, the display screen 20 can control the display content in three ways: first, the display screen 20 is electrically connected with the station reporter and the central controller. In the running process of the vehicle, the station reporter acquires the running line of the vehicle and sends the running line to the central controller, the central controller sends the processed signal to the display screen 20, and the display screen 20 displays the current line so that passengers can check the line information on the display screen 20. The station reporter and the central controller are provided with the RS485 serial interface, and the RS485 serial interface adopts balanced transmission and differential reception, so that the station reporter and the central controller have good noise interference resistance. Secondly, a USB interface is arranged on the display screen 20, and the content to be displayed is transmitted to the display screen 20 through the USB interface, so as to display the content such as advertisement and public service video. Thirdly, a SIM card port is provided on the display screen 20, or a network port is provided on the display screen 20, and the display content can be updated through the internet by giving the data traffic to the display screen 20.
Specifically, the display screen 20 may be provided with one, two, or three of the first structure, the second structure, and the third structure, and video, line information, and the like are displayed through the display screen 20. In this embodiment, the display screen 20 is electrically connected to the station reporter and the central controller, and the display screen 20 is further provided with a USB interface and a network port, so that various modes can be changed to control the display content, and the diversity of the display content of the display screen 20 is increased.
In one embodiment, referring to fig. 5, the display screen 20 is a touch display screen 20. Specifically, the display screen 20 includes a touch panel, a touch module, and an electric control board, and the touch module is disposed on the touch panel and electrically connected to the electric control board. The touch panel is provided with one or more of a point touch area, a sliding touch area and an information display area, the electric control board is provided with a touch module, a main chip and a display module, the touch module is used for sensing a hand-pointing touch or sliding touch action and transmitting touch information to the main chip, and the main chip drives the display module to display the information. The display content of the display screen 20 can be changed by touching the module with a finger, for example, selecting a query site, selecting a video to play, and the like.
Further, the driver protection device also comprises a power supply, wherein the power supply is electrically connected with the display screen 20 and is used for supplying power to the display screen 20, so that the display screen 20 can normally display information. Specifically, the power supply may be an ac power supply or a rechargeable power supply, and is not limited herein.
In one embodiment, a vehicle, please refer to fig. 1 to 3, includes a vehicle body and a driver protection device in any of the above embodiments, and the driver protection device is disposed in the vehicle body.
In the vehicle, the transparent plate 14 is disposed on the frame 13, and the rear cover 15 covers the transparent plate 14 to form a receiving cavity for the display 20. The display screen 20 is arranged in the accommodating cavity, the display screen 20 is protected through the transparent plate 14 and the rear cover 15, damage to the display screen 20 caused by external substances such as dust, water and the like is reduced, and therefore the service life of the display screen 20 is prolonged. In addition, the display screen 20 is disposed within the receiving cavity, and the transparent plate 14 and the rear cover 15 restrict movement of the display screen 20 from multiple directions, thereby increasing stability of the display screen 20 mounted on the enclosure structure 10.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The driver protection device is characterized by comprising a surrounding structure and a display screen, wherein the surrounding structure comprises a frame, a transparent plate and a rear cover, the transparent plate is arranged on the frame, the rear cover is arranged on the transparent plate, and an accommodating cavity is formed between the transparent plate and the rear cover; the display screen is arranged in the accommodating cavity, and the transparent plate is arranged corresponding to the display surface of the display screen.
2. The driver guard of claim 1, further comprising a mounting bracket, one end of the mounting bracket being coupled to the display screen and the other end of the mounting bracket being coupled to the frame.
3. The driver guard of claim 2, wherein the fixed bracket has a first mounting hole at one end thereof, the first mounting hole corresponding to the frame; and a second mounting hole is formed in the other end of the fixed support and corresponds to the side face of the display screen.
4. The driver guard according to any one of claims 1 to 3, further comprising a trim panel disposed on the frame, the transparent panel and the trim panel forming an enclosure.
5. The driver guard according to any one of claims 1 to 3, wherein the enclosure structure further comprises a side enclosure, a rear enclosure connected to the side enclosure, and a guard door rotatably connected to the side enclosure.
6. The driver guard of claim 5, wherein the junction of the side enclosure and the rear enclosure is an arcuate structure.
7. The driver protection device according to any one of claims 1 to 3, further comprising a heat dissipation member disposed in the accommodation cavity, wherein the rear cover is provided with a heat dissipation hole.
8. The driver guard of any one of claims 1 to 3, wherein the display screen is configured to electrically connect to a station reporter; and/or a USB interface is arranged on the display screen; and/or a network port is arranged on the display screen; and/or the display screen is provided with an SIM card port.
9. The driver protection device according to any one of claims 1 to 3, wherein the display screen comprises a touch panel, a touch module and an electric control board, the touch module is arranged on the touch panel and is electrically connected with the electric control board; the touch panel is provided with a point touch area, a sliding touch area and/or an information display area, the electric control board is provided with a touch module, a main chip and a display module, the touch module is used for sensing a hand-pointing touch or sliding touch action, and the main chip is used for driving the display module to display information.
10. A vehicle comprising a vehicle body and a driver guard as claimed in any one of claims 1 to 9, the driver guard being disposed within the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762652.3U CN211252510U (en) | 2019-10-21 | 2019-10-21 | Driver protector and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921762652.3U CN211252510U (en) | 2019-10-21 | 2019-10-21 | Driver protector and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN211252510U true CN211252510U (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921762652.3U Active CN211252510U (en) | 2019-10-21 | 2019-10-21 | Driver protector and vehicle |
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| CN (1) | CN211252510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071228A (en) * | 2020-09-21 | 2020-12-11 | 国网江苏省电力有限公司无锡供电分公司 | Safety protection device for 5G base station power grid power supply |
-
2019
- 2019-10-21 CN CN201921762652.3U patent/CN211252510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071228A (en) * | 2020-09-21 | 2020-12-11 | 国网江苏省电力有限公司无锡供电分公司 | Safety protection device for 5G base station power grid power supply |
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