CN115472033A - Traffic road condition voice early warning device based on 4G/5G internet of things technology - Google Patents
Traffic road condition voice early warning device based on 4G/5G internet of things technology Download PDFInfo
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- CN115472033A CN115472033A CN202211058996.2A CN202211058996A CN115472033A CN 115472033 A CN115472033 A CN 115472033A CN 202211058996 A CN202211058996 A CN 202211058996A CN 115472033 A CN115472033 A CN 115472033A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention relates to the technical field of voice early warning of traffic road conditions, in particular to a voice early warning device of traffic road conditions based on a 4G/5G internet of things technology; comprises a support, a heat conducting fin, a connecting pipeline, a fan, a protection box and a waterproof cover; lead to the inside of pillar through the conducting strip with the soil temperature transmission, the rotation that utilizes the inside fan of pillar makes the air current flow, make air current and conducting strip carry out the heat transfer, pass through the air current with secret constant temperature and transmit to the box in, make the temperature in the box also tend to invariable, realize that electrical components is in suitable operating temperature always, take out the water of pillar bottom gathering through pumping equipment, then wash solar panel's surface and the camera lens department of camera, disperse rivers through the shower nozzle, it is more even to make to wash solar panel, reduce the influence of dust.
Description
Technical Field
The invention relates to the technical field of voice early warning of traffic road conditions, in particular to a voice early warning device of traffic road conditions based on a 4G/5G internet of things technology.
Background
The speed of a motor vehicle is all relatively fast on high speed, the accident takes place in the current side, if the driver discovery of back car is untimely, cause the driver to be unable promptly to dodge, lead to the accident of knocking into the back easily, through the traffic road conditions pronunciation early warning device based on 4G 5G thing allies oneself with the technique, can utilize 4G 5G thing allies oneself with the technique and give the rear owner with the road condition in the place ahead in real time, let the rear owner make the judgement in advance, take braking measure in advance to make the vehicle slow down, reduce the probability that the secondary accident takes place.
The voice early warning device not only needs to survey road condition information in real time through the camera, but also needs to transmit information to the rear car owner in time when the accident happens to the road at the front side, so the voice early warning device is usually arranged on two sides of the road, is convenient for survey the condition on the road more accurately and transmit information in time, but the voice early warning device needs to be exposed in the external environment when working, and the normal operation of the voice early warning device can be influenced by the external temperature change.
When the electric appliance is in summer, the temperature in the box body can rise rapidly under the heat of the electric appliance element and the irradiation of strong sunlight, a cooling method which is usually adopted is to cool the electric appliance element in a mode of arranging a fan in the box body, but the method can not quickly cool the temperature in the box body, the fan can only ensure that the temperature in the box body is reduced by about 3-4 ℃, and the cooling effect of the fan is poorer and poorer along with the increasingly strong external sunlight, so that the electric appliance element is easy to damage in a long-term high-temperature environment; in winter, in low-temperature rainy and snowy weather, snow water is easy to permeate into the interior of equipment in the melting process to cause damage of electrical elements, and meanwhile, at low temperature, the surfaces of the electrical elements can also have water condensation and icing phenomena.
In view of this, the invention provides a traffic road condition voice early warning device based on a 4G/5G internet of things technology, and the problem is solved.
Disclosure of Invention
In order to make up the defects of the prior art, the problems that electrical elements are easy to break down due to the high external temperature for a long time and the electrical elements cannot work normally in a low-temperature environment in the prior art are solved; the invention provides a traffic road condition voice early warning device based on a 4G/5G internet of things technology.
The technical scheme adopted by the invention for solving the technical problems is as follows: a traffic road condition voice early warning device based on 4G/5G internet of things technology includes: the box, be provided with electrical components in the box, the box top is provided with solar panel and camera, its characterized in that:
the two support columns are arranged in a hollow mode, one end of each support column is closed, the other end of each support column is not closed, the unsealed end of each support column is fixedly connected with the box body and communicated with the interior of the box body, and a connecting pipeline is fixedly connected to the two support columns close to the closed ends;
the heat conducting plate group consists of single heat conducting plates, the heat conducting plate group is fixedly connected to one end of the closed pillar, the upper half part of the heat conducting plate group extends into the inside of the pillar, the lower half part of the heat conducting plate group is positioned outside the pillar, and the heat conducting plate group is arranged in parallel to the connecting pipeline;
the two fans are fixedly connected inside the support column respectively; the fan is arranged above the heat conducting sheet set;
the heat conducting fin group is embedded into the soil at one end of the strut fixedly connected with the heat conducting fin group, the embedding depth is 2-3.2 meters, for example, in an upper sea area, the temperature of 3 meters underground is 12-16 ℃ throughout the year and is less influenced by external temperature changes, the part of the heat conducting fin group outside the strut is in contact with the soil, the whole temperature of the heat conducting fin group is the same as the soil temperature under the action of heat transfer, the closed ends of the two struts are provided with connecting pipelines to be connected, the other ends of the two struts are communicated with the inside of the box body, so that the whole inner space is in a shape of a Chinese character 'hui', the rotating directions of two fans inside the strut are opposite, so that internal air flow can circularly flow, when the air flow moves to the heat conducting fin group, the heat transfer is carried out between the heat conducting fin group, the temperature of the air flow is the same as that of the heat conducting fin group, the heat transfer efficiency can be accelerated by the arrangement of the heat conducting fin group, the heat conducting fin group is parallel to the connecting pipelines, so that the air flow can more smoothly circulate, the blocking of the heat conducting fin group to the electric elements inside the box body can be in proper working temperature.
Preferably, a water pumping device is arranged between the two pillars and close to the closed end, a water pipe is connected with a water inlet of the water pumping device, the water pipe of the water inlet is respectively communicated with the interiors of the two pillars, a small hole is formed in the part of the heat conducting sheet group extending into the pillars, and the lower edge of the small hole is flush with the bottom surface of the inner side of the closed end of the pillar;
when the air current carries out the heat transfer, moisture in the air can condense into the drop of water when the hot gas flow meets cold object, and the drop of water can assemble in the bottom of pillar under the effect of gravity, then in time discharges the water that condenses through pumping equipment to set up aperture and aperture lower limb and the inboard bottom surface of pillar blind end flush on the heat conduction piece group, guarantee that the hydroenergy between the heat conduction piece group is taken out completely.
Preferably, a water outlet of the pumping equipment is connected with a water pipe, and the other end of the water pipe is respectively arranged on the upper surface of the solar panel and the lens of the camera;
the water pipe that the pumping equipment delivery port is connected is provided with two delivery ports, sets up respectively in solar panel's upper surface department and the camera lens department of camera, then can utilize rivers to wash solar panel's surface and the camera lens department of camera, reduces the influence of dust to equipment.
Preferably, a support is arranged above the box body, the support is arranged in an inclined manner, the solar panel is fixedly connected to the support, a spray head is arranged at one end, close to the upper end, of the support, and the spray head is connected with a water pipe of the water outlet;
the shelf of the fixed solar panel is inclined, so that the light can be better irradiated to the solar panel, the water flow and the dust can flow away as soon as possible after the water flow is washed, the water outlet pipe close to the solar panel is connected with the spray head on the support, the spray head can disperse the water flow, the water flow is uniform, and the surface of the washed solar panel is improved.
Preferably, the lower edge of the inner side of the water pipe of the water inlet is flush with the bottom surface of the inner side of the closed end of the support column; so that the water flow gathered at the bottom end of the supporting column can be pumped away by the pumping equipment.
Preferably, a certain distance is reserved between the position of the connecting pipeline and the bottom end of the strut; make rivers gather can not influence the flow of air current in the bottom of the pillar in the mouth of pipe of connecting tube, can realize simultaneously that rivers assemble when a certain amount, the work of drawing water for when rivers accumulate a certain amount, pumping equipment just can start, realized pumping equipment and carried out the waste that intermittent type work reduced electric power.
Preferably, the height of the part of the heat conducting plate group in the inner part of the support column is higher than the upper edge of the pipe orifice of the connecting pipe; when the air current moves, the air current passing through the interior of the connecting pipeline can pass through the heat conducting plate group and carry out heat transfer.
Preferably, the inside of the box body is fixedly connected with a protection box, and an electrical element is arranged in the protection box; the hot air is blown on the protective box, so that the hot air is prevented from being directly blown on the electrical element, and water drops are formed on the protective box.
Preferably, the bottom end surfaces of the interior of the box body and positioned at two sides of the pillar communication part are obliquely arranged; the flow of the water drops is accelerated, and the residue of the water drops in the box body is reduced.
Preferably, a waterproof cover is arranged above the fan and is in a conical arrangement; the fan is used for preventing condensed water drops from dropping on blades of the fan and influencing the normal operation of the fan, and meanwhile, the conical arrangement can enable the water drops to flow around along the conical surface and avoid a motor of the fan.
The invention has the following beneficial effects:
1. the traffic road condition voice early warning device based on the 4G/5G internet of things technology is characterized in that a support, a heat conducting sheet set, a connecting pipeline, a fan, a protection box and a waterproof cover are arranged; the heat conducting sheet set transmits the soil temperature to the inside of the support, the airflow flows by the aid of rotation of the fan inside the support, the airflow and the heat conducting sheet set are subjected to heat transmission, and then the airflow flows into the box body.
2. The traffic road condition voice early warning device based on the 4G/5G internet of things technology is characterized in that a water pumping device, a water pipe, a bracket and a spray head are arranged; the water of gathering bottom the pillar is taken out through pumping equipment, then washes solar panel's the surface and the camera lens department of camera, disperses rivers through the shower nozzle, and it is more even to make to wash solar panel, reduces the influence of dust.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view taken at A in FIG. 1;
FIG. 3 is a cross-sectional view of the arrangement of the set of fins of FIG. 1;
FIG. 4 is a cross-sectional view of the sprinkler structure of FIG. 1;
FIG. 5 is a partial cross-sectional view of the case or like structure of FIG. 1;
in the figure: 1. a box body; 2. an electrical component; 3. a solar panel; 4. a pillar; 5. a heat conducting sheet set; 6. connecting a pipeline; 7. a fan; 8. a water pumping device; 9. a water pipe; 10. a small hole; 11. a support; 12. a spray head; 13. a protection box; 14. a waterproof cover; 15. a camera is provided.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-5;
the technical scheme adopted by the invention for solving the technical problems is as follows: a traffic road condition voice early warning device based on 4G/5G internet of things technology includes:
the solar energy collection box comprises a box body 1, wherein an electrical element 2 is arranged in the box body 1, and a solar panel 3 and a camera 15 are arranged above the box body 1;
the number of the pillars 4 is two, the pillars 4 are arranged in a hollow manner, one end of each pillar 4 is closed, the other end of each pillar 4 is not closed, the non-closed end of each pillar 4 is fixedly connected with the box body 1 and communicated with the interior of the box body 1, and a connecting pipeline 6 is fixedly connected to the two pillars 4 close to the closed end;
the heat conducting plate group 5 is composed of a single heat conducting plate group 5, the heat conducting plate group 5 is fixedly connected to one end of the pillar 4, the upper half part of the heat conducting plate group 5 extends into the pillar 4, the lower half part of the heat conducting plate group 5 is positioned outside the pillar 4, and the heat conducting plate group 5 is arranged in parallel to the connecting pipeline 6;
two fans 7 are arranged, and the two fans 7 are fixedly connected inside the strut 4 respectively; the fan 7 is arranged above the heat conducting plate group 5;
the first embodiment;
firstly, the installation position of equipment is determined, then a worker buries one end of a strut 4 fixedly connected with a heat conducting plate group 5 into the soil, marks are drawn on the surface of the strut 4 according to the required embedding depths of different areas, the worker adjusts the embedding depth according to the positions of the marks, so that the heat conducting plate group 5, a fan 7 and a pumping device 8 at the bottom end of the strut 4 are all underground, after the equipment is installed, solar energy is converted through a solar panel to supply power for electrical components, redundant electric quantity is stored in a storage battery, a camera 15 on a box body 1 captures road pictures in real time, then the road pictures are transmitted to the equipment behind through a 4G/5G physical connection technology, dangerous accidents occur on the road at the front side, the box body 1 at the rear side can give out alarm sound, and then a driver at the rear side is reminded to adopt corresponding braking measures in time, so that the safety of the driver at the rear side is protected; when the equipment is in a hot place under climatic conditions or in summer, the external environment temperature is high, the electrical component 2 is easily damaged due to long-time high temperature, the ground heat wave cannot be quickly transmitted to the deep layer of soil and can only be slowly transmitted downwards, so the underground temperature is much lower than the external environment temperature, because the heat conducting plate group 5 penetrates through the bottom of the support 4, the temperature of the soil is transmitted to the inside of the support 4, wherein the heat conducting plate group 5 is made of aluminum, the heat conducting effect of aluminum is good, the heat transmission speed is high, when the temperature in the box body 1 is overhigh, two fans 7 in the support 4 start to rotate and rotate in different directions, the fan 7 in one support 4 rotates anticlockwise to drive the air flow in the support 4 to move downwards, so that the hot air flow in the box body 1 blows to the heat conducting plate group 5, when the height of the heat conducting plate group 5 in the strut 4 is lower than the upper edge of the inner side of the connecting pipeline 6, part of the hot air flow can not contact the heat conducting plate group 5, so that the heat transfer efficiency is reduced, so that the height of the part of the heat conducting plate group 5 in the strut 4 is higher than the upper edge of the inner side of the connecting pipeline 6, the downward moving hot air flow can fully contact with the heat conducting plate group 5 at the bottom end of the strut 4 and carry out heat transfer, the contact area of the hot air flow and the heat conducting plate group 5 is increased by arranging a plurality of heat conducting plate groups 5, the heat transfer efficiency is improved, the air flow passes through the heat conducting plate group 5, enters the other strut 4 through the connecting pipeline 6 and continues to carry out heat transfer with the heat conducting plate group 5 in the strut 4, the heat exchange is carried out between the hot air flow and the underground soil through the heat conducting plate as a medium, the temperature of the hot air flow is reduced, the fan 7 in the strut 4 rotates clockwise, and drives the air flow in the strut 4 to move upwards, the cold air flow at the bottom of the support 4 is blown to the inside of the box body 1, so that the electrical element 2 in the box body 1 is cooled, and the heat is cooled in a heat transfer mode, the hot air flow is absorbed by utilizing the air flow and the cold air flow is blown in, compared with the prior art that the heat is radiated in a mode of arranging a single fan 7 in the box body 1, the process of cold and heat exchange with the underground is added, and the effect of cooling by blowing underground low temperature into the box body 1 is obvious;
when the hot air flow contacts with heat conducting plate group 5, the surface temperature of heat conducting plate group 5 is close to the underground temperature, because there is a temperature difference between the temperature of heat conducting plate group 5 and the temperature of hot air flow, therefore, the water in the hot air flow forms water drops on the surface of the low-temperature heat conducting plate group 5, when the water drops are gathered to a certain amount, the water drops flow to the bottom end of the pillar 4 under the action of self gravity and are converged, and in order to prevent the convergence of the water drops from influencing the flow efficiency of the air flow in the connecting pipeline 6, the connecting duct 6 is positioned at a distance from the bottom end of the mast 4, so that the bottom end of the mast 4 is at a distance, used for receiving water drops, when the water level reaches the connecting pipeline 6, a water level sensor is arranged in the connecting pipeline 6 to start a water pumping device 8 to pump water away, the parts of the heat conducting plate groups 5 in the supporting columns 4 are respectively provided with small holes 10, the lower edges of the heat conducting plate groups are flush with the inner bottom surfaces of the closed ends of the supporting columns 4, so that the water between the heat conducting plate groups 5 can be pumped away, a water pipe 9 connected with the water outlets of the water pumping device 8 is provided with two water outlets which are respectively arranged at the upper surface of the solar panel 3 and the lens of the camera 15, then the surface of the solar panel 3 and the lens of the camera 15 can be washed by water flow, the influence of dust on the equipment is reduced, since the solar panel 3 has a large area, the direct washing and cleaning effect through the water pipe 9 is poor, as shown in fig. 4, the outlet of the water pipe 9 is connected with a spray head 12, the spray head 12 can make the water flow disperse uniformly to wash the surface of the solar panel 3, the cleaning effect is increased, and the support 11 of fixed solar panel 3 inclines to set up, can make better perpendicular incidence solar panel 3 of light on the one hand, on the other hand makes rivers and dust flow away as soon as possible after rivers wash.
Example two;
when the equipment is installed in a place with cold weather conditions or in winter, the external environment temperature is low, the surface of the electrical element 2 can be condensed and frozen, the endurance of the low-temperature environment battery is reduced, no solar panel 3 supplies power at night, the battery power cannot enable the equipment to operate overnight, the underground temperature is higher than the external environment temperature, the land temperature is transmitted to the inside of the strut 4 through the heat conducting plate group 5, then the fan 7 in one strut 4 rotates anticlockwise to drive the airflow in the strut 4 to move downwards, so that the cold airflow in the box body 1 blows to the heat conducting plate group 5, the airflow enters the inside of the other strut 4 through the connecting pipeline 6 after passing through the heat conducting plate group 5 and is continuously subjected to heat transfer with the heat conducting plate group 5 in the strut 4, the temperature of the cold airflow is increased, and the fan 7 in the strut 4 rotates clockwise, the airflow in the supporting column 4 is driven to move upwards, so that the hot air flow at the bottom of the supporting column 4 is blown to the interior of the box body 1, the temperature in the box body 1 is increased, and because the hot air flow is directly blown to the electrical element 2, water drops are easily generated on the surface of the electrical element 2, and the short circuit and other problems of the electrical element 2 are easily caused, as shown in figure 5, a protection box 13 is arranged in the box body 1, the electrical element 2 is arranged in the protection box 13, so that the hot air flow is directly blown to the protection box 13 and is not blown to the electrical element 2, the water drops are only generated outside the protection box 13, the water drops are dripped on the bottom end face in the box body 1 under the influence of self gravity, the bottom end faces at two sides of the communication position of the supporting column 4 in the box body 1 are obliquely arranged, the flow of the water drops can be accelerated, the residue of the water drops in the box body 1 is reduced, a waterproof cover 14 is arranged above the fan 7, the waterproof cover 14 is conical, prevent that the water droplet from dripping on fan 7's motor, influence fan 7's normal operating, the toper setting can make the water droplet flow around along the toper face simultaneously, the motor department of keeping away fan 7 flows along the inboard face of pillar 4 downwards, make the water droplet gathering in the bottom of pillar 4, the size of bottom of buckler 14 slightly is greater than the size of fan 7 motor, be less than the size reduction of pillar 4 diameter to the influence that the air current flows, because water and heat conduction piece group 5 contact also can carry out the heat transfer, so the temperature of water also can rise, when washing solar panel 3 and camera 15 through pumping equipment 8, can melt and wash surperficial frost and dust.
Claims (10)
1. A traffic road condition voice early warning device based on 4G/5G internet of things technology includes: box (1), be provided with electrical components (2) in box (1), box (1) top is provided with solar panel (3) and camera (15), its characterized in that:
the two struts (4) are arranged, the struts (4) are arranged in a hollow mode, one end of each strut (4) is closed, the other end of each strut is not closed, the unsealed end of each strut (4) is fixedly connected with the box body (1) and communicated with the interior of the box body (1), and a connecting pipeline (6) is fixedly connected to each strut (4) close to the closed end;
the heat conducting plate group (5) is composed of single heat conducting plates, the heat conducting plate group (5) is fixedly connected to one end of the support column (4) in a closed mode, the upper half portion of the heat conducting plate group (5) extends into the support column (4), the lower half portion of the heat conducting plate group is located outside the support column (4), and the heat conducting plate group (5) is arranged in parallel to the connecting pipeline (6);
two fans (7) are arranged, and the two fans (7) are fixedly connected inside the strut (4) respectively; the fan (7) is arranged above the heat conducting plate group (5).
2. The traffic road condition voice early warning device based on the 4G/5G internet of things technology as claimed in claim 1, wherein: two pillar (4) are close to and are provided with pumping equipment (8) between the blind end, what pumping equipment (8) water inlet was connected has water pipe (9), the water pipe (9) of water inlet communicate with each other with two pillar (4) are inside respectively, aperture (10) have been seted up to the part that conducting strip group (5) stretched into pillar (4) inside, aperture (10) lower limb flushes with the inboard bottom surface of pillar (4) blind end.
3. The traffic road condition voice early warning device based on the 4G/5G internet of things technology as claimed in claim 2, wherein: the delivery port of pumping equipment (8) is connected with water pipe (9), the other end of water pipe (9) sets up the camera lens department at the upper surface department of solar panel (3) and camera (15) respectively.
4. The traffic road condition voice early warning device based on the 4G/5G internet of things technology as claimed in claim 1, wherein: box (1) top is provided with support (11), support (11) slope sets up, solar panel (3) link firmly on support (11), support (11) one end of leaning on is provided with shower nozzle (12), shower nozzle (12) link to each other with water pipe (9) of delivery port.
5. The traffic road condition voice early warning device based on 4G/5G internet of things technology of claim 2, characterized in that: the lower edge of the inner side of the water pipe (9) of the water inlet is flush with the bottom surface of the inner side of the closed end of the support column (4).
6. The traffic road condition voice early warning device based on 4G/5G internet of things technology of claim 1, characterized in that: and a certain distance is reserved between the position of the connecting pipeline (6) and the bottom end of the strut (4).
7. The traffic road condition voice early warning device based on the 4G/5G internet of things technology as claimed in claim 1, wherein: the height of the part of the heat conducting plate group (5) in the support column (4) is higher than the upper edge of the pipe orifice of the connecting pipe (6).
8. The traffic road condition voice early warning device based on the 4G/5G internet of things technology as claimed in claim 1, wherein: the box body (1) is fixedly connected with a protection box (13) inside, and an electric appliance element (2) is arranged inside the protection box (13).
9. The traffic road condition voice early warning device based on 4G/5G internet of things technology of claim 1, characterized in that: the bottom end faces of the interior of the box body (1) and the two sides of the communication position of the support columns (4) are obliquely arranged.
10. The traffic road condition voice early warning device based on the 4G/5G internet of things technology as claimed in claim 1, wherein: a waterproof cover (14) is arranged above the fan (7), and the waterproof cover (14) is in a conical shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211058996.2A CN115472033B (en) | 2022-08-30 | 2022-08-30 | Traffic road condition voice early warning device based on 4G/5G Internet of things technology |
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| CN202211058996.2A CN115472033B (en) | 2022-08-30 | 2022-08-30 | Traffic road condition voice early warning device based on 4G/5G Internet of things technology |
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| CN115472033B CN115472033B (en) | 2023-08-01 |
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| CN115472033B (en) | 2023-08-01 |
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