CN116193783B - Dampproofing switching power supply - Google Patents
Dampproofing switching power supply Download PDFInfo
- Publication number
- CN116193783B CN116193783B CN202310296298.4A CN202310296298A CN116193783B CN 116193783 B CN116193783 B CN 116193783B CN 202310296298 A CN202310296298 A CN 202310296298A CN 116193783 B CN116193783 B CN 116193783B
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- CN
- China
- Prior art keywords
- top cover
- shell
- power supply
- cover body
- shielding structure
- Prior art date
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Casings For Electric Apparatus (AREA)
- Dc-Dc Converters (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention provides a dampproof switching power supply, and relates to the technical field of power supply equipment; the moistureproof switching power supply comprises a shell and a circuit device arranged in the shell; wherein the shell comprises a shell body and a top cover; the top cover comprises a top cover body and a movable rain shielding structure; the top cover body is fixedly connected to the upper end of the shell; the movable rain shielding structure is positioned in the top cover body, and a ventilation and heat dissipation channel is formed between the movable rain shielding structure and the shell; the movable rain shielding structure is connected with the top cover body in a sliding manner along the vertical direction, and shields the ventilation and heat dissipation channels through downward movement. According to the dampproof switch power supply provided by the invention, the shell is matched with the top cover, so that the dampproof switch power supply can effectively remove heat generated by the circuit device from the shell through the ventilation and heat dissipation channel in non-rainy weather, and meanwhile, the ventilation and heat dissipation channel can be shielded through the movable rain shielding structure in rainy weather.
Description
Technical Field
The invention relates to the technical field of power supply equipment, in particular to a moistureproof switching power supply.
Background
With the development of economy and society, the urban appearance is gradually changed, various large-sized outdoor electronic billboards and large-sized LED display screens are visible everywhere in the city, the large-sized outdoor electronic billboards and the LED display screens are powered by an external 400W switching power supply, and the switching power supply is generally composed of a shell and a circuit device which is arranged in the shell and has relatively mature technology; when the switch power supply is used and installed, the switch power supply is usually exposed outdoors and is easy to be affected by rainwater in the use process; once rainwater enters the shell of the switching power supply, a circuit device in the shell is easy to damage, so that the switching power supply is invalid; in order to prevent rainwater from invading an internal circuit device, the existing dampproof switch power supply generally adopts a shell sealing mode to waterproof and dampproof the internal circuit device; however, as the switching power supply is in operation, some power elements in the circuit device generate more heat; if heat is not dissipated in time, the circuit device can work under the overheat condition, so that the service life of the switching power supply is influenced; therefore, the shell of the current dampproof switch power supply is not beneficial to heat dissipation of the circuit device, and the service life of the switch power supply is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problem that a shell of a dampproof switch power supply in the prior art is unfavorable for heat dissipation, the invention provides the dampproof switch power supply, and the movable rain shielding structure is arranged in sliding connection with a top cover body, so that the movable rain shielding structure can move downwards under the action of gravity of rainwater to shield a ventilation heat dissipation channel, and rainwater is prevented from entering a shell, so that the dampproof and heat dissipation effects of the switch power supply can be considered, and the problem that the shell of the dampproof switch power supply in the prior art is unfavorable for heat dissipation is solved.
The technical scheme adopted for solving the technical problems is as follows:
a dampproof switch power supply comprises a shell and a circuit device arranged in the shell; wherein, the liquid crystal display device comprises a liquid crystal display device,
the shell comprises a shell body and a top cover;
the top cover comprises a top cover body and a movable rain shielding structure;
the top cover body is fixedly connected to the upper end of the shell;
the movable rain shielding structure is positioned in the top cover body, and a ventilation and heat dissipation channel is formed between the movable rain shielding structure and the shell;
the movable rain shielding structure is connected with the top cover body in a sliding manner along the vertical direction, and shields the ventilation and heat dissipation channels through downward movement.
Optionally, the top cover body comprises a top cover bottom plate and a top cover side plate surrounding the top cover bottom plate; a sliding hole and a through hole are arranged between the top cover bottom plate and the top cover side plate; the movable rain shielding structure is in sliding connection with the top cover body through the sliding hole and the through hole.
Optionally, a vent hole is formed in the top cover bottom plate.
Optionally, the movable rain shielding structure comprises a water collecting box, a drainage plate, a sliding column and a return spring;
the drainage plate and the sliding column are connected to the bottom end of the water collection box, and penetrate through the top cover body;
the drainage plate is positioned at the outer side of the shell, and the inside of the water collection box is communicated with the outer side of the drainage plate;
the reset spring is sleeved on the outer side of the sliding column;
the water collecting box and the drainage plate are in sliding connection with the top cover body through the sliding column and the reset spring.
Optionally, a plurality of water guide grooves arranged at intervals are arranged on the outer side of the drainage plate.
Optionally, the inner side of the drainage plate is provided with a plurality of air guide grooves which are arranged at intervals.
Optionally, a limit column is arranged at the bottom end of the water collecting box.
Optionally, the movable rain shielding structure further comprises a water collecting sponge positioned above the water collecting box.
Optionally, the bottom plate of the water collecting box is made of aluminum alloy.
Optionally, the top cover further comprises a dust guard positioned above the top cover body.
The beneficial effects of the invention are as follows:
according to the dampproof switch power supply provided by the invention, the shell is matched with the top cover, so that heat generated by the circuit device can be effectively removed from the shell through the ventilation and heat dissipation channel in non-rainy weather, and meanwhile, the ventilation and heat dissipation channel can be shielded through the movable rain shielding structure in rainy weather, so that rainwater is prevented from invading the circuit device, and the dampproof switch power supply can achieve dampproof and heat dissipation functions.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a moisture resistant switching power supply of the present invention;
FIG. 2 is an exploded view of the moisture resistant switching power supply of the present invention;
FIG. 3 is a schematic view of the structure of the cap body of the present invention;
FIG. 4 is a schematic view of the top cover of the present invention;
FIG. 5 is a cross-sectional view taken along A-A of FIG. 4;
fig. 6 is a schematic view of the rear structure of the sliding rain shield structure of the present invention.
In the figure: 1-a housing; 2-top cover; 21-a top cover body; 211-top cover bottom plate; 2111-mounting slots; 2112-vent holes; 212-top cover side panels; 213-slide hole; 214-a through hole; 22-a mobile rain barrier; 221-a water collecting box; 2211-a limit column; 222-drainage plate; 2221-water guide groove; 2222-wind scooper; 223-sliding column; 224-a return spring; 225-a water collection sponge; 23-dust guard.
Detailed Description
The present invention will now be described in further detail. The embodiments described below are exemplary and intended to illustrate the invention and should not be construed as limiting the invention, as all other embodiments, based on which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
In the description of the present invention, it should be understood that the terms "first" and "second" are used merely to simplify the description and are not to be construed as indicating or implying relative importance or as implying a number of technical features which are indicated. Thus, a feature defined as "first", "second" may include one or more such feature, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, a first feature "above" or "below" a first feature may include both the first feature and a second feature in direct contact, and may also include both the first feature and the second feature not in direct contact but in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply indicating that the first feature is at a lower level than the second feature.
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In order to solve the problem that a shell of a dampproof switch power supply in the prior art is unfavorable for heat dissipation, the invention provides the dampproof switch power supply, which is shown in figures 1 and 2 and comprises a shell and a circuit device arranged in the shell; the specific composition of the circuit device can be any structural form or model of the circuit device in the prior art, and the specific composition can be selected according to actual use requirements; the shell is used for protecting the circuit device arranged in the shell; the shell comprises a shell body 1 and a top cover 2; the top cover 2 comprises a top cover body 21 and a movable rain shielding structure 22; the top cover body 21 is fixedly connected to the upper end of the shell 1; the movable rain shielding structure 22 is positioned in the top cover body 21, and a ventilation and heat dissipation channel is formed between the movable rain shielding structure 22 and the shell 1; the movable rain shielding structure 22 is slidably connected with the top cover body 21 along the vertical direction and shields the ventilation and heat dissipation channels by moving downwards.
In the normal working process of the moistureproof switching power supply, if the moistureproof switching power supply is not in rainy weather, the upper part of the movable rain shielding structure 22 is not extruded by rainwater, the movable rain shielding structure is in a lifting state, and the inside and the outside of the shell are ventilated through a ventilation and heat dissipation channel between the sliding rain shielding structure 22 and the shell 1, so that heat dissipation is realized; in contrast, in rainy days, rainwater is collected above the sliding rain shielding structure 22, and under the action of gravity of the rainwater, the movable rain shielding structure 22 moves downwards to shield a ventilation and heat dissipation channel, so that the rainwater is prevented from entering the inside of the shell, and the dampproof effect of rainy days is realized; along with the weather, after the rainwater above the movable rain shielding structure 22 evaporates, the movable rain shielding structure 22 is not extruded by the rainwater, and the movable rain shielding structure 22 ascends again, does not shield the ventilation and heat dissipation channels, and further recovers heat dissipation.
According to the dampproof switch power supply provided by the invention, the shell 1 is matched with the top cover 2, so that heat generated by the circuit device can be effectively removed from the shell through the ventilation and heat dissipation channel in non-rainy weather, and meanwhile, the ventilation and heat dissipation channel can be shielded through the movable rain shielding structure 22 in rainy weather, so that rainwater is prevented from invading the circuit device, and the dampproof switch power supply can achieve dampproof and heat dissipation functions.
In particular, the preferred shell 1 of the invention is in a barrel-shaped structure, and the top cover 2 connected to the upper end of the shell jointly forms a shell suitable for protecting the circuit device; referring to fig. 3, the preferred roof body 21 of the present invention includes a roof bottom 211, and a roof side panel 212 surrounding the roof bottom 211; a sliding hole 213 and a through hole 214 are arranged between the top cover bottom plate 211 and the top cover side plate 212, and the movable rain shielding structure 22 is slidably connected with the top cover body 21 through the sliding hole 213 and the through hole 214.
The invention preferably uses the top cover body 21 to connect with the shell 1 through the fastener; in order to facilitate the connection between the top cover body 21 and the housing 1, as shown in fig. 4 and 5, the bottom of the top cover bottom plate 211 is preferably provided with a mounting groove 2111 adapted to the housing 1, and in the assembly process, after the housing 1 is mounted in the mounting groove 2111, the top cover body 21 is connected with the housing 1 by a fastener, so that the assembly difficulty is reduced and the assembly precision is improved.
To facilitate heat dissipation within the enclosure, the present invention preferably provides vent holes 2112 in the top cover floor 211, as shown in fig. 3.
In order to realize the sliding connection between the movable rain shielding structure 22 and the top cover body 21, referring to fig. 2, the movable rain shielding structure 22 in the present invention includes a water collecting box 221, a drainage plate 222, a sliding column 223 and a return spring 224; wherein the drainage plate 222 and the sliding column 223 are connected to the bottom end of the water collecting box 221, and the drainage plate 222 and the sliding column 223 are all penetrated through the top cover body 21; the drainage plate 222 is positioned at the outer side of the shell 1, and the inside of the water collecting box 221 is communicated with the outer side of the drainage plate 222 so as to drain the accumulated water in the water collecting box 221 to the outer side of the shell 1 through the drainage plate 222; specifically, the sliding column 223 is adapted to be connected to the top cover body 21 through the sliding hole 213, and the drainage plate 222 is adapted to be connected to the top cover body 21 through the through hole 214; the return spring 224 is sleeved outside the sliding column 223; the water collection box 221 and the drainage plate 222 are slidably connected to the top cover body 21 through a sliding column 223 and a return spring 224.
In the working process of the dampproof switching power supply, in the non-rainy weather, no water is accumulated in the water collecting box 221, at the moment, the movable rain shielding structure 22 is in a rising state under the action of the reset spring 224, at the moment, a ventilation and heat dissipation channel is formed by a gap between the drainage plate 222 and the shell 1, and the inside and the outside of the shell can be ventilated through the ventilation and heat dissipation channel, so that heat dissipation is realized; in rainy days, rainwater is accumulated in the water collecting box 221, under the action of gravity of the rainwater, the reset spring 224 is extruded, the water collecting box 221 moves downwards, the drainage plates 222 move downwards synchronously, and the gap between the drainage plates and the shell 1 is gradually reduced until the drainage plates are completely shielded, so that the rainwater is prevented from entering the shell; as the rainwater in the water collecting box 221 is led out through the drainage plate 222 and the evaporation effect is gradually reduced, the water collecting box 221 and the drainage plate 222 gradually rise until the water collecting box is completely lifted up under the action of the return spring 224, so that the heat dissipation function is gradually restored.
The bottom of the sliding post 223 is preferably coupled to the sliding hole 213 by a nut in order to prevent the sliding post 223 from being removed.
In order to facilitate the drainage of the accumulated water in the water collecting box 221 through the drainage plate 222, the outer side of the drainage plate 222 is preferably provided with a plurality of water guide grooves 2221 arranged at intervals.
Further, in order to improve the heat dissipation effect, referring to fig. 6, the inner side of the drainage plate 222 is preferably provided with a plurality of air guide grooves 2222 arranged at intervals, so that after the drainage plate 222 moves down under the action of squeezing rainwater, the inside of the shell can still communicate with the outside through the air guide grooves 2222 arranged in the drainage plate 222, and therefore, even in rainy weather, the moisture-proof switch power supply can ensure the moisture-proof function and also can consider the heat dissipation function.
According to the invention, the water guide grooves 2221 and the air guide grooves 2222 are respectively arranged on the inner side and the outer side of the water guide plate 222, so that the water guide plate 222 has water guide and ventilation functions, is multipurpose, has dampproof and heat dissipation properties, and is beneficial to simplifying the structure of the dampproof switch power supply.
In order to ensure the heat dissipation function after the drainage plate 222 moves downwards, the bottom end of the water collecting box 221 is preferably provided with the limit columns 2211, and further preferably the number of the limit columns 2211 is four, so that the downward movement position of the water collecting box 221 can be limited through the limit columns 2211, the water collecting box 221 is prevented from being attached to the top cover bottom plate 211 in the downward movement process, and therefore effective air circulation with the outside in the outer shell in rainy weather is ensured.
The movable rain shielding structure 22 in the invention is moved downwards by the gravity action of the rainwater to realize moisture prevention, so that the movable rain shielding structure 22 is moved downwards only when the rainwater in the water collecting box 221 is accumulated to a certain amount; the accumulation of rainwater in the water collecting box 221 is a process of gradually accumulating from less to more, so if the rainwater in the water collecting box 221 is accumulated to the movable rain shielding structure 22 for too long, the rainwater can enter the housing 1 before the drainage plate 222 shields the ventilation and heat dissipation channels, and the damp-proof effect is reduced.
In order to ensure the dampproof effect, the movable rain shielding structure 22 of the invention preferably further comprises a water collecting sponge 225 positioned above the water collecting box 221, and rainwater can be timely collected in rainy days by utilizing the characteristic that the water collecting sponge 225 is easy to absorb water, so that the water accumulation amount in the water collecting box 221 is rapidly increased, the movable rain shielding structure 22 can be caused to move downwards in a short time, and then ventilation and heat dissipation channels can be shielded in time through the drainage plates 222, thereby ensuring the dampproof effect.
In order to improve the heat dissipation effect, the bottom plate of the water collecting box 221 is preferably made of aluminum alloy, so that the water collecting sponge 225 is directly contacted with the bottom plate made of aluminum alloy, and the characteristic of good heat conduction performance of aluminum alloy is utilized, so that on one hand, heat in the shell 1 is conveniently led out through the aluminum alloy bottom plate, and on the other hand, evaporation of water in the water collecting sponge 225 is accelerated in the heat conduction process, so that rainwater in the water collecting sponge 225 can be reduced in a short time after rain stop, the movable rain shielding structure 22 can be timely lifted, and further the heat dissipation function of the moisture-proof switch power supply can be recovered as soon as possible.
In order to prevent the function of the water collecting box 221 from being affected by the entry of foreign matters, the top cover 2 of the present invention preferably further comprises a dust-proof plate 23 above the top cover body 21, and the dust-proof plate 23 is provided with a mesh structure.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (8)
1. A dampproof switch power supply is characterized by comprising a shell and a circuit device arranged in the shell; wherein, the liquid crystal display device comprises a liquid crystal display device,
the shell comprises a shell body (1) and a top cover (2);
the top cover (2) comprises a top cover body (21) and a movable rain shielding structure (22);
the top cover body (21) is fixedly connected to the upper end of the shell (1);
the movable rain shielding structure (22) is positioned in the top cover body (21), and a ventilation and heat dissipation channel is formed between the movable rain shielding structure (22) and the shell (1);
the movable rain shielding structure (22) is connected with the top cover body (21) in a sliding manner along the vertical direction and shields the ventilation and heat dissipation channel through downward movement;
the top cover body (21) comprises a top cover bottom plate (211) and a top cover side plate (212) which is enclosed around the top cover bottom plate (211); a sliding hole (213) and a through hole (214) are arranged between the top cover bottom plate (211) and the top cover side plate (212); the movable rain shielding structure (22) is in sliding connection with the top cover body (21) through the sliding hole (213) and the through hole (214);
the movable rain shielding structure (22) comprises a water collecting box (221), a drainage plate (222), a sliding column (223) and a return spring (224);
the drainage plate (222) and the sliding column (223) are both connected to the bottom end of the water collecting box (221), the sliding column (223) is suitable for being connected with the top cover body (21) through the sliding hole (213), and the drainage plate (222) is suitable for being connected with the top cover body (21) through the through hole (214), so that the drainage plate (222) and the sliding column (223) are both penetrated through the top cover body (21);
the drainage plate (222) is positioned at the outer side of the shell (1), and the inside of the water collecting box (221) is communicated with the outer side of the drainage plate (222);
the return spring (224) is sleeved outside the sliding column (223);
the water collection box (221) and the drainage plate (222) are in sliding connection with the top cover body (21) through the sliding column (223) and the return spring (224).
2. The moisture-proof switching power supply as claimed in claim 1, wherein a vent hole (2112) is provided in the top cover base plate (211).
3. The moisture-proof switching power supply as claimed in claim 1, characterized in that a plurality of water guide grooves (2221) are arranged at intervals on the outer side of the water guide plate (222).
4. A moisture-proof switching power supply as claimed in claim 3, characterized in that the inner side of the flow guiding plate (222) is provided with a plurality of air guiding grooves (2222) arranged at intervals.
5. The moisture-proof switching power supply as claimed in claim 4, wherein a limit post (2211) is provided at a bottom end of the water collecting box (221).
6. The moisture resistant switching power supply as in any one of claims 1-5 wherein said movable rain barrier structure (22) further comprises a water collection sponge (225) located above said water collection box (221).
7. The moisture-proof switching power supply as claimed in claim 6, wherein the bottom plate of the water collecting box (221) is made of aluminum alloy.
8. The moisture-proof switching power supply as claimed in claim 6, wherein the top cover (2) further comprises a dust-proof plate (23) located above the top cover body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310296298.4A CN116193783B (en) | 2023-03-24 | 2023-03-24 | Dampproofing switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310296298.4A CN116193783B (en) | 2023-03-24 | 2023-03-24 | Dampproofing switching power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116193783A CN116193783A (en) | 2023-05-30 |
| CN116193783B true CN116193783B (en) | 2023-08-22 |
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ID=86442505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310296298.4A Active CN116193783B (en) | 2023-03-24 | 2023-03-24 | Dampproofing switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116193783B (en) |
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| CN213367969U (en) * | 2020-09-16 | 2021-06-04 | 上海昱辰机电工程有限公司 | High-applicability outdoor security monitoring equipment based on rainwater cleaning |
| CN214624611U (en) * | 2021-05-08 | 2021-11-05 | 深圳市碧绿天科技有限公司 | Damp-proof internal and external heat dissipation non-inductive film resistor |
| CN114828506A (en) * | 2022-06-09 | 2022-07-29 | 王亚洲 | Local area network switch |
| CN114843902A (en) * | 2022-07-02 | 2022-08-02 | 南通莱隆电器成套设备有限公司 | Electrical distribution device with intelligent regulation function |
| WO2022252329A1 (en) * | 2021-05-31 | 2022-12-08 | 南京驭逡通信科技有限公司 | Waterproof monitoring device and waterproof method therefor |
| CN115548944A (en) * | 2022-11-01 | 2022-12-30 | 宁波三星智能电气有限公司 | Waterproof heat dissipation device for electric energy meter and control method |
| CN218449063U (en) * | 2022-11-01 | 2023-02-03 | 宁波三星智能电气有限公司 | Waterproof heat abstractor of electric energy meter |
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2023
- 2023-03-24 CN CN202310296298.4A patent/CN116193783B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209402033U (en) * | 2019-03-28 | 2019-09-17 | 李洁 | A kind of outdoor rain-proof moisture-proof metering case |
| CN213367969U (en) * | 2020-09-16 | 2021-06-04 | 上海昱辰机电工程有限公司 | High-applicability outdoor security monitoring equipment based on rainwater cleaning |
| CN214624611U (en) * | 2021-05-08 | 2021-11-05 | 深圳市碧绿天科技有限公司 | Damp-proof internal and external heat dissipation non-inductive film resistor |
| WO2022252329A1 (en) * | 2021-05-31 | 2022-12-08 | 南京驭逡通信科技有限公司 | Waterproof monitoring device and waterproof method therefor |
| CN114828506A (en) * | 2022-06-09 | 2022-07-29 | 王亚洲 | Local area network switch |
| CN114843902A (en) * | 2022-07-02 | 2022-08-02 | 南通莱隆电器成套设备有限公司 | Electrical distribution device with intelligent regulation function |
| CN115548944A (en) * | 2022-11-01 | 2022-12-30 | 宁波三星智能电气有限公司 | Waterproof heat dissipation device for electric energy meter and control method |
| CN218449063U (en) * | 2022-11-01 | 2023-02-03 | 宁波三星智能电气有限公司 | Waterproof heat abstractor of electric energy meter |
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|---|---|
| CN116193783A (en) | 2023-05-30 |
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