Wall-mounted switching power supply

By designing a heat dissipation channel for the wall-mounted switching power supply and placing the output terminals at the bottom, the problems of large size and poor heat dissipation of switching power supply equipment are solved, achieving efficient heat dissipation and convenient installation and maintenance.

CN223613206UActive Publication Date: 2025-11-28JIUJIANG LIYUAN RECTIFICATION EQUIP CO LTD
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Patent Information

Application Number
CN202423184289.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-23
Publication Date
2025-11-28
Estimated Expiration
2034-12-23

AI Technical Summary

Technical Problem

Existing switching power supply equipment is large in size, occupies a lot of floor space, is complicated to install and disassemble, and has poor heat dissipation performance.

Method used

It adopts a wall-mounted structure, achieves efficient heat dissipation through a heat dissipation channel design, and places the output end at the bottom for easy cable connection. Combined with the removable enclosure design, it simplifies maintenance.

Benefits of technology

It saves ground space, improves installation flexibility, enhances heat dissipation efficiency, simplifies maintenance procedures, and improves ease of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of power conversion equipment, and discloses a wall-mounted switching power supply, which comprises a shell provided with a back plate and a surrounding plate; the wall hanging seat is arranged on the back plate; when the switching power supply is fixed in a wall-mounted suspension mode, a side plate body, facing the ground, of the shell is a lower auxiliary plate, and a side plate body, deviating from the ground, of the shell is an upper auxiliary plate. The heat dissipation channel is arranged in the shell, and a functional device is mounted at the heat dissipation channel; the output end is arranged on the lower auxiliary plate and penetrates through the lower auxiliary plate to extend out; the air inlet is formed in the lower auxiliary plate; the air outlet is formed in the upper auxiliary plate; the two ends of the heat dissipation exhaust channel are correspondingly connected with the air inlet and the air outlet respectively, so that external cooling air flow enters the heat dissipation exhaust channel, and air channel flowing heat dissipation is formed. According to the wall-mounted switching power supply provided by the utility model, the switching power supply can be directly suspended and installed, the ground space is saved, and the wall-mounted switching power supply can be compatible and suitable for various installation environments and is high in installation flexibility; and heat generated when the functional device works can be timely and effectively dissipated by means of the heat dissipation channel, so that stable operation of equipment is ensured.
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Description

TECHNICAL FIELD

[0001] The utility model relates to power conversion equipment technical field, concretely relates to a wall -hanging switching power supply. BACKGROUND

[0002] Switching power supply, also known as switching power supply, switching converter, is a kind of high frequency power conversion device, because of its high efficiency and flexibility and is widely used.

[0003] The working principle of switching power supply is that switching tube is turned on or cut off at extremely high speed through circuit control, make direct current be converted into high frequency alternating current, subsequently be provided with transformer and be processed, to generate the required voltage group or more.

[0004] However, in the existing switching power supply equipment, there are generally problems such as large size, complex installation and removal and poor heat dissipation performance;Traditional switching power supply equipment often occupies a large amount of ground space, is cumbersome and laborious during installation, consumes a lot of time, and is also relatively difficult to disassemble and maintain subsequently;Switching power supply generates heat continuously during the working process, and the heat in the equipment is often difficult to dissipate in time, which leads to the continuous increase of the temperature of the equipment and affects the use performance of the equipment. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a wall -hanging switching power supply to solve the problems that the existing switching power supply equipment is generally large in size, occupies a large amount of ground space, and is complex to install and remove, and poor in heat dissipation performance.

[0006] The utility model provides a wall -hanging switching power supply, it includes: the casing has the backplate and the surrounding board of detachable connection at the backplate, the wall -hanging seat is located in the backplate, is suitable for making switching power supply wall -hanging suspension fixed, wherein, when the switching power supply wall -hanging suspension is fixed, define the side plate body of the casing towards the ground as lower sub -plate, the side plate body away from the ground as upper sub -plate, the heat dissipation row is located in the inside of casing, the functional device is installed at the heat dissipation row, the output end is located at lower sub -plate and is set outwards through lower sub -plate, the air inlet is opened in lower sub -plate, is suitable for introducing the outside cooling wind flow, the air outlet is opened in upper sub -plate, is suitable for leading out the wind flow after heat exchange, wherein, the heat dissipation row both ends are corresponding with the air inlet and air outlet respectively, it is suitable for making the outside cooling wind flow enter the heat dissipation row, and the air duct flow is formed and is cooled.

[0007] In an alternative embodiment, the functional devices are arranged on the outer wall of the heat dissipation row;The functional devices include circuit boards, transformers and rectifier tubes;At least two circuit boards are arranged along the extension direction of the heat dissipation row;The transformer is sandwiched between the at least two circuit boards, and the rectifier tube is arranged beside the transformer.

[0008] In an alternative embodiment, the wall-hanging base comprises a mounting plate and a wing plate, the wing plate being extended and bent from the edge plate of the mounting plate; the wing plate is fixed to the back plate, and the mounting plate is arranged in parallel to the back plate.

[0009] In an alternative embodiment, at least two wall-hanging bases are arranged at opposite ends of the back plate along the height direction, and the mounting plate is arranged beyond the edge of the plate body of the back plate.

[0010] In an alternative embodiment, the plate body of the mounting plate beyond the edge of the back plate is defined as a mounting tongue, and a plurality of mounting holes are arranged on the mounting tongue.

[0011] In an alternative embodiment, the surrounding plate comprises a front plate and at least two side plates, the at least two side plates being extended and bent from the side edge plate of the front plate; the at least two side plates are respectively detachably connected to the back plate, and are adapted to surround the internal device.

[0012] In an alternative embodiment, at least two heat dissipation channels are arranged at intervals, and the two ends of the heat dissipation channels are respectively connected to the upper auxiliary plate and the lower auxiliary plate; at least two air inlets are arranged on the lower auxiliary plate and correspond to the heat dissipation channels respectively; and at least two air outlets are arranged on the upper auxiliary plate and correspond to the heat dissipation channels respectively.

[0013] In an alternative embodiment, further comprising a fan arranged in the heat dissipation channel and close to the air inlet.

[0014] In an alternative embodiment, the heat dissipation channel is provided with an air inlet grille at the end portion adjacent to the air inlet.

[0015] In an alternative embodiment, the back plate is provided with a vertical edge at the side plate surface close to the internal device, and the surrounding plate abuts against the vertical edge and is fixed by means of a bolt assembly.

[0016] Beneficial effects: By setting the wall-mounted switch power supply structure, the switch power supply can be directly hung and installed on the wall surface, thereby saving the ground space, and the wall-mounted installation mode enables the switch power supply to be compatible with various installation environments, providing higher installation flexibility; in addition, the setting of the heat dissipation channel enables the switch power supply structure to obtain high-efficiency heat dissipation performance, ensures stable operation, and the heat generated by the functional devices during work can be effectively dissipated in time, ensuring that the temperature inside the switch power supply is always maintained within a reasonable range, and the external cooling air flows into the heat dissipation channel through the air inlet, forming a circulating flow of the air duct to dissipate heat, improving the heat dissipation efficiency; the functional devices are arranged and installed in sequence at the outer wall of the heat dissipation channel, reducing the overall volume; the coaming and the back plate are detachably installed, and the coaming is designed in one-piece type, which is convenient for disassembling the coaming to directly maintain the internal devices of the power supply, simplifies the process of daily maintenance and inspection, and improves the work efficiency; the output end head is lowered and penetrates the lower sub-plate to extend outward, which is convenient for the connection of the cable, reduces the difficulty of the operator to install and arrange the cable on site, and the wall-mounted installation and the lowered design of the output end head improve the practicability and operation convenience of the switch power supply. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0018] Figure 1 FIG. 1 is a structural schematic diagram of the wall-mounted switch power supply of the present application;

[0019] Figure 2 FIG. 2 is a schematic diagram of the wall-mounted switch power supply of the present application after the coaming is removed;

[0020] Figure 3 FIG. 3 is a side view of the wall-mounted switch power supply of the present application;

[0021] Figure 4 FIG. 4 is a bottom view of the wall-mounted switch power supply of the present application.

[0022] Explanation of reference signs:

[0023] 1, shell; 11, back plate; 111, vertical edge; 12, coaming; 121, front panel; 122, side plate; 13, lower sub-plate; 131, air inlet; 14, upper sub-plate; 141, air outlet; 2, wall hanging seat; 21, mounting plate; 22, wing plate; 23, mounting tongue; 24, mounting hole; 3, heat dissipation channel; 31, fan; 32, air inlet grille; 4, output end; 5, functional device; 51, circuit board; 52, transformer; 53, rectifier tube. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0028] The embodiments of the present application will be described below in conjunction with Figures 1 to 4 The embodiments of the present application will be described below in conjunction with

[0029] According to the embodiments of the present application, a wall-mounted switching power supply is provided, comprising:

[0030] The shell 1 has a back plate 11 and a surrounding plate 12 which is detachably connected to the back plate 11, and the surrounding plate 12 is an integrated plate body, which is convenient to assemble and disassemble the surrounding plate 12 from the back plate 11, and when maintaining, the internal functional device 5 can be directly exposed by disassembling the surrounding plate 12, and the assembly and disassembly are time-saving and labor-saving.

[0031] The wall-mounted seat 2 is arranged on the back plate 11, which is used for directly suspending and fixing the switching power supply in a wall-mounted manner, thereby saving the ground space and making the installation more flexible and compatible with various installation environments.

[0032] Further, when the switching power supply is in a wall-mounted suspended and fixed state, the side plate body of the shell 1 facing the ground is defined as a lower sub-plate 13, and the side plate body away from the ground is defined as an upper sub-plate 14, that is, when the shell 1 is wall-mounted, the upper and lower side plate bodies are respectively the upper and lower sub-plates, and the upper and lower sub-plates are respectively fixed with the back plate 11, which are the basic support plate bodies for the design concept of the "lower-in and upper-out" air duct and the lower-located output end 4.

[0033] The heat dissipation channel 3 is arranged in the shell 1, and the functional devices 5 are arranged in sequence on the outer wall of the heat dissipation channel 3, and when the functional devices 5 work, the heat dissipation channel 3 can effectively dissipate heat, and the functional devices 5 are no longer distributed randomly, the overall volume is reduced, and the structural prerequisite for the wall-mounted installation mode is provided.

[0034] The output end 4 is arranged at the lower sub-plate 13 and protrudes outward through the lower sub-plate 13, the output end 4 is located below, which is convenient for the connection of the cable, reduces the difficulty of the on-site installation and arrangement of the cable by the operator, and has high practicability.

[0035] The air inlet 131 is arranged on the lower sub-plate 13, which is used for introducing external cooling air flow, the air outlet 141 is arranged on the upper sub-plate 14, which is used for leading out the heat-exchanged air flow, the heat dissipation channel 3 is hollow, and the two ends are respectively connected with the air inlet 131 and the air outlet 141, so that the external cooling air flow directly enters the heat dissipation channel 3 after passing through the air inlet 131, forms an air duct, and circulates and flows to dissipate heat, thereby ensuring that the heat generated by the functional device 5 during the working process can be timely and effectively dissipated.

[0036] Specifically, the functional devices 5 are arranged at the outer wall of the heat dissipation channel 3; the functional devices 5 include, but are not limited to, a circuit board 51, a transformer 52, and a rectifier tube 53, and the functional devices 5 play a role in electric energy conversion; at least two circuit boards 51 are arranged at intervals along the extension direction of the heat dissipation channel 3; the transformer 52 is interposed between the at least two circuit boards 51, and the rectifier tube 53 is arranged beside the transformer 52; in this embodiment, the two circuit boards 51 are arranged at intervals and at the same side outer wall of the heat dissipation channel 3, the transformer 52 is arranged between the two circuit boards 51, and the rectifier tube 53 is arranged beside the transformer 52 and arranged in parallel with the transformer 52.

[0037] The specific use mode of the wall-mounted switching power supply includes:

[0038] On the one hand, the wall-mounted installation mode is as follows: first, a suitable wall surface or support position is selected according to the installation environment, the wall hanging seat 2 is firmly installed on the wall surface or support using expansion screws or other fixing members, and it is ensured that the wall hanging seat 2 is stably installed without shaking, at this time, the shell 1 is in a stable suspended state without tilting or falling risk; second, the cable is connected, since the output end 4 is arranged at the lower sub plate 13 and extends outward, the operator can conveniently connect the cable from below, and according to actual needs, the cable is connected to the corresponding input and output ports, and it is ensured that the connection is firm and reliable; before formal use, it is necessary to check the state of the heat dissipation channel 3, the air inlet 131, and the air outlet 141, to ensure that the air inlet 131 is unobstructed and the air outlet 141 is free of obstructions, so as to form an effective air duct circulation.

[0039] On the other hand, when the switching power supply starts to work, the functional devices 5 such as the circuit board 51, the transformer 52, and the rectifier tube 53 will generate a large amount of heat, which is directly transmitted to the outer wall of the heat dissipation channel 3, at this time, the external cooling air flow is introduced into the shell 1 through the air inlet 131 on the lower sub plate 13 and directly enters the heat dissipation channel 3, the air flow smoothly flows in the heat dissipation channel 3, forming an air duct, the air flow in the air duct circulates to carry away the heat at the outer wall of the heat dissipation channel 3, and is discharged out of the shell 1 through the air outlet 141 on the upper sub plate 14, so as to ensure that the heat generated by the functional devices 5 during the working process can be timely and effectively dissipated, and the temperature inside the switching power supply is always maintained within a reasonable range.

[0040] On the other hand, during daily maintenance and inspection of the switching power supply, since the surrounding plate 12 is integrally arranged and detachably installed with the back plate 11, the surrounding plate 12 can be easily detached, and after being detached, the internal devices of the power supply can be directly maintained, the state of the functional devices 5 and the connection of the cable can be checked, and after the inspection is completed, the surrounding plate 12 can be directly installed, the surrounding plate 12 and the back plate 11 can be fixed by means of a bolt assembly, and the installation and disassembly are convenient and easy to maintain.

[0041] In this embodiment, by setting the wall-mounted switch power supply structure, the switch power supply can be directly suspended and installed on the wall surface, thereby saving the ground space, and the wall-mounted installation mode enables the switch power supply to be compatible with various installation environments, providing higher installation flexibility. In addition, the setting of the heat dissipation channel 3 enables the switch power supply structure to obtain high-efficiency heat dissipation performance, ensures stable operation, and the heat generated by the functional device 5 during work can be effectively dissipated in time, ensuring that the temperature inside the switch power supply always remains within a reasonable range. In addition, the external cooling air flows into the heat dissipation channel 3 through the air inlet 131, forms an air duct circulation flow, and improves the heat dissipation efficiency. The functional device 5 is arranged and installed in sequence at the outer wall of the heat dissipation channel 3, reducing the overall volume. The coaming 12 and the back plate 11 are detachably installed, and the coaming 12 is designed in an integral molding type, which is convenient for disassembling the coaming 12 to directly maintain the internal devices of the power supply, simplifies the process of daily maintenance and inspection, and improves the work efficiency. The output end 4 is arranged below and penetrates the lower sub-plate 13 to extend outward, which is convenient for the connection of the cable, and reduces the difficulty of the operator to install and arrange the cable on site. The wall-mounted installation and the lower design of the output end 4 improve the practicability and operation convenience of the switch power supply.

[0042] In some embodiments, in combination with Figures 1 to 3 As shown, the wall hanging seat 2 includes a mounting plate 21 and a wing plate 22, the wing plate 22 is extended and bent from the edge plate body of the mounting plate 21; the wing plate 22 is fixed with the back plate 11, and the mounting plate 21 is arranged in parallel with the back plate 11. When wall-mounted, the mounting plate 21 can be directly attached to the wall or support, ensuring the stability of wall-mounted installation, and the parallel arrangement of the mounting plate 21 and the back plate 11 can ensure the alignment of the switch power supply, avoiding performance degradation or failure of the switch power supply due to installation inclination, and has strong practicability.

[0043] In some embodiments, in combination with Figures 1 to 3 As shown, at least two wall hanging seats 2 are arranged on opposite sides of the back plate 11 along the height direction, forming a stable support structure to balance and stabilize the wall-mounted installation of the switch power supply; the mounting plate 21 is arranged beyond the edge of the plate body of the back plate 11, and the plate body of the mounting plate 21 beyond the edge of the back plate 11 is defined as a mounting tongue 23, a plurality of mounting holes 24 are arranged at the mounting tongue 23, and screws can be inserted through the mounting holes 24 to be fastened with the wall or support; wherein the mounting tongue 23 is arranged protruding from the shell 1, which is beneficial for the suspension operation of the worker, and the mounting tongue 23 is located at the top and bottom of the shell 1, so that the worker can directly fix the wall hanging seat 2 from the front, making the wall-mounted switch power supply more easy to install and use.

[0044] In some embodiments, in combination with Figure 1As shown, the enclosure 12 comprises a front panel 121 and at least two side panels 122, the at least two side panels 122 being formed by folding and extending from the two side edge panels of the front panel 121, and the enclosure 12 being integrally formed; the at least two side panels 122 are detachably connected with the back plate 11 respectively, so that the enclosure 12 surrounds the internal devices, and when daily maintenance or inspection is performed, the enclosure 12 can be directly detached to maintain the internal devices of the power supply, thereby simplifying the process of daily maintenance and inspection, and having high practicability.

[0045] In some embodiments, in combination with Figure 2 As shown, the at least two heat dissipation channels 3 are arranged at intervals, and the two ends of the heat dissipation channels 3 are connected with the upper auxiliary plate 14 and the lower auxiliary plate 13 respectively; the at least two air inlets 131 are formed in the lower auxiliary plate 13 and correspond to the heat dissipation channels 3 respectively; the at least two air outlets 141 are formed in the upper auxiliary plate 14 and correspond to the heat dissipation channels 3 respectively, and the outer walls of the at least two heat dissipation channels 3 are respectively provided with functional devices 5, which can reduce the overall volume of the switching power supply and independently and efficiently dissipate the heat generated by the functional devices 5 during operation, thereby having high practicability.

[0046] In some embodiments, in combination with Figure 4 As shown, further comprising a fan 31, the fan 31 being arranged in the heat dissipation channel 3 and being arranged close to and towards the air inlet 131, and the fan 31 rotating to introduce and guide the flow of air for efficient heat dissipation.

[0047] In some embodiments, in combination with Figure 4 As shown, the heat dissipation channel 3 is provided with an air inlet grille 32 at the joint end with the air inlet 131, the air inlet grille 32 comprising a plurality of slot openings arranged side by side, each slot opening being composed of two U-shaped slots arranged opposite to each other, which can block some sundries and shield the internal devices.

[0048] In some embodiments, in combination with Figure 2 As shown, the back plate 11 is provided with a vertical edge 111 at the side panel 122 close to the internal devices, the vertical edge 111 being perpendicular to the panel surface of the back plate 11 and fixed to the edge of the back plate 11, and the enclosure 12 abutting against the vertical edge 111 and being fixed by means of a bolt assembly; the vertical edge 111 can also be arranged to extend along the edge of the back plate 11, so that the upper auxiliary plate 14 and the lower auxiliary plate 13 abut against and are fixed to the vertical edge 111 at the corresponding positions.

[0049] Obviously, the above embodiments are only examples for clearly illustrating, and are not limitation to the embodiments. Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope of the present application.

Claims

1. A wall-mounted switching power supply, characterized by comprising: The utility model relates to a switch power supply wall hanging type suspension fixing device, including: The shell (1) has the backplate (11) and the enclosure (12) detachably connected at the backplate (11); The wall hanging seat (2) is arranged on the backplate (11) and is suitable for making switch power supply wall hanging type suspension fixing; Wherein, when the switch power supply wall hanging type suspension fixing, define the shell (1) towards the side plate body of ground as lower sub -plate (13), the side plate body of ground away as upper sub -plate (14); The heat dissipation row (3) is arranged in the shell (1), and the outer wall of the heat dissipation row (3) is provided with functional devices (5); The output end (4) is arranged on the lower sub -plate (13) and extends outward through the lower sub -plate (13); The air inlet (131) is arranged on the lower sub -plate (13) and is suitable for introducing external cooling air flow; The air outlet (141) is arranged on the upper sub -plate (14) and is suitable for leading out the air flow after heat exchange; Wherein, the heat dissipation row (3) two ends are corresponding with the air inlet (131) and the air outlet (141) respectively, and the external cooling air flow is suitable for entering the heat dissipation row (3) and forming the air duct flow dissipation.

2. The wall-mounted switching power supply according to claim 1, characterized in that, The functional devices (5) are arranged on the outer wall of the heat dissipation row (3); The functional devices (5) include circuit board (51), transformer (52) and rectifier tube (53); At least two circuit boards (51) are arranged along the extension direction of the heat dissipation row (3); The transformer (52) is clamped between the at least two circuit boards (51), and the rectifier tube (53) is arranged beside the transformer (52).

3. The wall-mounted switching power supply according to claim 1, characterized in that, The wall hanging seat (2) includes a mounting plate (21) and a wing plate (22), the wing plate (22) is extended and bent from the edge plate of the mounting plate (21); The wing plate (22) is fixed with the backplate (11), and the mounting plate (21) is arranged parallel to the backplate (11).

4. The wall-mounted switching power supply according to claim 3, characterized in that At least two wall hanging seats (2) are arranged on the opposite sides of the backplate (11) along the height direction, and the mounting plate (21) is arranged beyond the edge of the backplate (11).

5. The wall-mounted switching power supply according to claim 4, characterized in that The mounting plate (21) beyond the edge of the backplate (11) is defined as a mounting tongue (23), and a plurality of mounting holes (24) are formed in the mounting tongue (23).

6. The wall-mounted switching power supply according to claim 1, characterized in that, The enclosure (12) includes a front panel (121) and a side plate (122), and at least two side plates (122) are bent and extended from the side edges of the front panel (121); At least two side plates (122) are detachably connected with the backplate (11), and the enclosure (12) surrounds the internal devices.

7. The switch mode power supply of claim 1, wherein: At least two heat dissipation rows (3) are arranged at intervals, and the two ends of the heat dissipation row (3) are connected with the upper sub -plate (14) and the lower sub -plate (13) respectively; At least two air inlets (131) are arranged on the lower sub -plate (13) and correspond to the heat dissipation row (3) respectively; At least two air outlets (141) are arranged on the upper sub -plate (14) and correspond to the heat dissipation row (3) respectively.

8. The switch mode power supply according to claim 7, characterized in that Further comprising a fan (31) arranged in the heat dissipation channel (3) and close to the air inlet (131).

9. The switch mode power supply according to claim 8, characterized in that The heat dissipation channel (3) is provided with an air inlet grille (32) at the end part connected with the air inlet (131).

10. The s witching power supply for wall mounting according to claim 1, characterized in that The back plate (11) is provided with a vertical edge (111) at the side surface close to the functional device (5), and the surrounding plate (12) is in abutment with the vertical edge (111) and is fixed by means of a bolt assembly.