CN221863204U - Control cabinet and electronic stop board - Google Patents

Abstract

The utility model first discloses a control cabinet, including a cabinet body and a display screen and an electrical control module arranged in the cabinet body. The display screen and the electrical control module are arranged at intervals, and fan groups are respectively arranged at the bottom and top of the cabinet body. A guide duct plate for diverting the air volume is correspondingly arranged between each fan group and the display screen. The display screen, the guide duct plate and the protective glass on the front side of the cabinet body divide the space in the cabinet body into a heat dissipation duct in front of the screen and a heat dissipation duct behind the screen. The utility model further provides an electronic bus stop sign. The control cabinet and electronic bus stop sign provided by the utility model divide the internal space formed by the cabinet body and the front windshield into two duct spaces, the heat dissipation duct in front of the screen and the heat dissipation duct behind the screen, by arranging the guide duct plate and the display screen, thereby realizing a dual-duct heat dissipation structure, concentrating the air volume and dissipating it evenly, and effectively ensuring the heat dissipation in front of the screen and the heat dissipation of electrical components behind the screen.

Description

A control cabinet and an electronic station sign

Technical Field

The utility model belongs to the technical field of electronic bus stop signs, and in particular relates to a control cabinet and an electronic bus stop sign.

Background Art

As an important means of transportation for urban residents' daily travel, public transportation is a green travel measure strongly advocated by the country, and bus stops play an important role.

The internal layout of the existing electronic bus stop products is roughly as follows: the electronic display screen is fixed by a screen fixing beam, the screen fixing beam is fixedly connected to the outer box, a certain space is left between the electronic display screen and the front windshield for ventilation and heat dissipation in front of the screen, and a front-screen heat dissipation fan unit is arranged under the screen; an electrical control module is provided behind the screen, and the control module is usually also fixed on the screen fixing beam, and then a fan unit is arranged under the module for ventilation and heat dissipation.

In the prior art, two sets of ventilation and heat dissipation systems need to be configured for the display screen and the electrical control module behind the screen respectively, which can easily cause uneven ventilation distribution and fail to achieve ideal heat dissipation effects. It is also more likely to cause the internal circulating wind field of the electronic bus stop to be dispersed and unconcentrated, causing turbulence in the wind field and generating greater wind noise. At the same time, the overall structural form of the bus stop is also relatively complex.

In view of this, the present utility model is proposed.

Utility Model Content

The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a control cabinet and an electronic bus stop sign with a dual-duct heat dissipation structure design, so that the air volume is concentrated and evenly distributed, effectively ensuring the heat dissipation in front of the screen and the heat dissipation of electrical components behind the screen; the cabinet-type design makes the ventilation path relatively concentrated, and will not cause the dispersion of the wind field inside the electronic bus stop sign.

In order to solve the above technical problems, the utility model first provides a control cabinet, which adopts the following technical solutions:

A control cabinet comprises a cabinet body and a display screen and an electrical control module arranged in the cabinet body, wherein the display screen and the electrical control module are arranged at intervals, and fan groups are respectively arranged at the bottom and the top of the cabinet body, and guide duct plates for diverting air volume are correspondingly arranged between each of the fan groups and the display screen, and the display screen, the guide duct plate and the protective glass on the front side of the cabinet body divide the space in the cabinet body into a heat dissipation duct in front of the screen and a heat dissipation duct behind the screen.

Furthermore, the display screen and the electrical control module are fixed to each other via a screen fixing beam.

Furthermore, a hinge mechanism is installed on the screen fixing beam, and the electrical control module is flipably connected to the screen fixing beam through the hinge mechanism.

Furthermore, the cabinet includes a left side panel and a right side panel, and the left side panel and the right side panel are provided with holes for the screen fixing beam to pass through. The left side panel and the right side panel are fitted with both sides of the display screen to seal the left and right sides of the heat dissipation duct in front of the screen and the heat dissipation duct behind the screen.

Furthermore, each of the fan units is assembled with the cabinet via a fan unit mounting plate.

Furthermore, the fan assembly mounting plate is generally in a "U" shape, with the bend on the same side as the display screen facing away from the display screen, and the end of the bend on the same side as the electrical control module is bent vertically in a direction away from the electrical control module.

Furthermore, the air guide duct plate is installed obliquely between the fan unit and the display screen.

Furthermore, the air guide duct plate includes a fan mounting plate, a guide plate and a display screen mounting plate which are integrally formed or sequentially assembled and fixed, and the guide plate is obliquely arranged between the fan mounting plate and the display screen mounting plate.

Furthermore, the display screen mounting plate includes a support plate and a side plate, one end of the support plate is connected to the guide plate, and the other opposite end is connected to the side plate, the support plate abuts against the bottom or top of the display screen, and the side plate abuts against the side of the display screen.

The second invention object of the utility model is to provide an electronic bus stop sign, which adopts the following technical solution:

An electronic bus stop sign comprises the control cabinet as described above.

Compared with the prior art, the control cabinet and electronic station sign provided by the utility model have the following beneficial effects:

The display screen and electrical control module are fixed and integrated into a whole through the screen fixing beam. When renovating or upgrading the site, you only need to connect and fix the screen fixing beam with the electronic station sign box. The whole installation is simple, fast, time-saving and labor-saving.

The dual-duct heat dissipation structure design divides the internal space formed by the cabinet and the front windshield into two duct spaces: the front heat dissipation duct and the rear heat dissipation duct through the guide duct plate and the display screen. The first fan unit is installed under the first fan unit mounting plate to blow air into the cabinet, and the fresh air is diverted through the guide duct plate and then enters the cabinet;

The second fan unit is installed above the second fan unit mounting plate and exhausts air outside the cabinet to concentrate the air volume and distribute it evenly, effectively ensuring the heat dissipation in front of the screen and the heat dissipation of electrical components behind the screen.

The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

FIG1 is a schematic diagram of a control cabinet structure provided by the utility model;

FIG2 is a partial cutaway schematic diagram of a control cabinet provided by the present invention;

Fig. 3 is an enlarged view of portion E in Fig. 2;

FIG4 is a schematic diagram of a heat dissipation air path of a control cabinet provided by the utility model;

In the figure: 1. display screen; 2. screen fixing beam; 3. electrical installation plate; 4. first fan unit installation plate; 5. first fan unit air guide duct plate; 6. second fan unit air guide duct plate; 7. second fan unit installation plate; 8. left side plate of cabinet; 9. right side plate of cabinet; 10. cabinet cover; 11. first fan unit; 12. second fan unit; 13. adhesive rubber strip; 14. windshield; 15. fixing plate; 16. electrical control module.

It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments.

DETAILED DESCRIPTION

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The utility model first provides a control cabinet, including a cabinet body and a display screen 1 and an electrical control module 16 arranged in the cabinet body. The display screen 1 and the electrical control module 16 are arranged at intervals, and fan groups are respectively arranged at the bottom and top of the cabinet body. A guide duct plate for diverting air volume is correspondingly arranged between each fan group and the display screen 1. The display screen 1, the guide duct plate and the protective glass on the front side of the cabinet body divide the space in the cabinet body into a heat dissipation duct in front of the screen and a heat dissipation duct behind the screen.

In this embodiment, an electronic bus stop sign is taken as an example to introduce the specific structure of a control cabinet provided by the utility model.

The electronic bus stop described in this embodiment can be a bus electronic bus stop sign, which is used to display bus operation information. Passengers can query the real-time bus route on the electronic bus stop sign and place advertisements on the display screen; or the electronic bus stop sign can be an information sign in a station or airport, without any requirements or restrictions.

The electronic bus stop sign comprises a box body, a windshield 14 is arranged at the front end of the box body, a control cabinet is embedded in the box body, a certain gap is left between the display screen 1 and the windshield 14 , and the display screen 1 is protected by the windshield 14 .

The control cabinet can be used alone or embedded in the electronic bus stop. When the control cabinet is used alone, a protective glass is set in front of the display screen 1. In this mode, the protective glass is fixed to the left side plate 8 of the cabinet, the right side plate 9 of the cabinet, the first fan unit mounting plate 4, and the second fan unit mounting plate 7, and a gap is left between the protective glass and the display screen 1 to form a heat dissipation duct in front of the screen. When the control cabinet is embedded in the electronic bus stop, the control cabinet can be directly embedded in the electronic bus stop. The front face of the electronic bus stop box does not need to be provided with a front windshield 14, or the protective glass of the control cabinet is cancelled, and the front windshield 14 set on the electronic bus stop box protects the display screen. That is, when the control cabinet is embedded in the box of the electronic bus stop, either the front windshield 14 of the box or the protective glass of the control cabinet can be set.

As shown in FIG. 1 to FIG. 3 , the control cabinet includes a cabinet body, in which an electrical control module 16 and a display screen 1 are arranged, and a double air duct structure for diverting fresh air is provided in the cabinet body to achieve unified and centralized ventilation and heat dissipation.

The display screen 1 is used to display bus route information, real-time operation status, and can also be used to play advertisements or videos; the electrical control module 16 includes an electrical installation board 3, various electrical components for power distribution, communication and control, and is used to control, protect, monitor and measure the display information of the display screen 1.

The cabinet includes a fan assembly installation plate, a left side panel 8 of the cabinet, a right side panel 9 of the cabinet, and a cabinet cover 10 arranged on the back of the cabinet. The cabinet cover 10 is a rectangular thin plate, covering the back of the electrical control module 16. The fan assembly installation plate has a bending structure on both sides along the length direction, one side is bent downward, and the other side is bent upward; specifically, the side of the fan assembly installation plate on the same side as the display screen 1 is vertically bent in the direction away from the display screen 1, and the side of the fan assembly installation plate on the same side as the electrical control module 16 is vertically bent in the center direction of the electrical control module 16, so that the cross-section of the fan assembly installation plate is generally in the shape of "ㄣ"; further, the bent portion on the same side as the electrical control module 16 is vertically bent again in the direction away from the electrical control module 16, so that a step is formed between the bending structure on this side and the main structure of the fan assembly installation plate.

Specifically, the fan assembly mounting plate includes a first fan assembly mounting plate 4 and a second fan assembly mounting plate 7. The first fan assembly mounting plate 4 is arranged at the bottom of the cabinet, and its two ends are respectively fixedly connected to or integrally formed with the left side plate 8 and the right side plate 9 of the cabinet. The front side of the first fan assembly mounting plate 4 (the side assembled and fixed with the front windshield 14) is bent downward (bent away from the display screen 1), the bent front side is sealed and fixed to the front windshield 14, and the rear side is bent upward (bent toward the center direction of the electrical control module 16) and then bent outward, and the outward bent part (bent away from the electrical control module 16) is fixed to the cabinet cover 10; the second fan assembly mounting plate 7 is arranged at the top of the cabinet, and its two ends are respectively fixedly connected to or integrally formed with the left side plate 8 and the right side plate 9 of the cabinet. The front side of the second fan unit mounting plate 7 (the side assembled and fixed with the windshield 14) is bent upward (bent away from the display screen 1), the bent front side is fixed to the windshield 14, the rear side is bent downward (bent toward the center direction of the electrical control module 16) and then bent outward (bent away from the electrical control module 16), and the outward bent portion is fixed to the cabinet cover 10, or as shown in Figure 1, a fixing plate 15 is also provided above the cabinet cover 10, and the outward bent portion of the rear side of the second fan unit mounting plate 7 is fixed to the fixing plate 15 or formed as one piece.

It should be noted that the fan unit mounting plate can be used as the top plate and bottom plate of the cabinet, or mounting grooves can be set on the top plate and bottom plate of the cabinet, and the fan unit mounting plate is fixed to the cabinet at the mounting groove without any requirements or restrictions. And the fan unit mounting plate is provided with a mounting circular hole of the size of the fan unit for mounting the fan unit. Or the left side plate 8, the right side plate 9, the top plate and the bottom plate of the cabinet are fixed to each other as a whole, and mounting circular holes are directly opened on the top plate and the bottom plate, and the fan unit is directly mounted on the bottom plate and the top plate.

A screen fixing beam 2 is provided in the cabinet. The screen fixing beam 2 is a U-shaped profile, which is horizontally arranged in the cabinet. The number of uses and the fixing position are determined according to the volume of the display screen 1 and the electrical control module 16 to be fixed. The U-shaped bottom plate is fixed to the back of the display screen 1. One end of the electrical control module 16 is fixed to the two side plates of the U-shaped cabinet through a hinge mechanism, and can be rotated along the fixing point of the cabinet side plate with the screen fixing beam 2 under the drive of the hinge mechanism. The other end is fixed to the screen fixing beam 2 through a detachable locking member.

The display screen 1 and the electrical control module 16 are fixed by the screen fixing beam 2 and integrated into a whole set and then set in the cabinet. The two ends of the screen fixing beam 2 are fixed to the left side panel 8 and the right side panel 9 of the cabinet. The left side panel 8 and the right side panel 9 of the cabinet are provided with sockets. The two ends of the screen fixing beam 2 pass through the sockets of the left side panel 8 and the right side panel 9 of the cabinet so as to be plugged and fixed with the two side panels; the screen fixing beam 2 passes through the left side panel 8 and the right side panel 9 of the cabinet and is provided with screw holes on both sides, which are fixedly connected with the box screws of the electronic station sign. The display screen 1 and the electrical control module 16 are assembled and connected with the cabinet through the screen fixing beam 2 to form an integral module, which realizes simple, fast, time-saving and labor-saving operation during assembly, and avoids the shortcomings of many scattered parts and complicated processes.

In this embodiment, a guide air duct plate is provided in the box body to form a double air duct structure in the cabinet body, so as to effectively dissipate the operating heat generated by the display screen 1 and the electrical control module 16. The double air duct structure includes a front-screen heat dissipation air duct and a rear-screen heat dissipation air duct. The display screen 1 divides the space between the cabinet body and the front windshield 14 into two air duct spaces, namely, the front-screen heat dissipation air duct and the rear-screen heat dissipation air duct. The front-screen heat dissipation air duct is surrounded by the display screen 1, the front windshield 14, and the cabinet side panels.

The heat dissipation duct behind the screen is surrounded by the display screen 1, the cabinet side panels, and the cabinet cover 10; the double duct structure can achieve the heat dissipation effect both in front of and behind the screen, and can also achieve the heat dissipation before and after the electrical control module 16.

Specifically, a first fan unit 11 is installed on the first fan unit mounting plate 4, and a second fan unit 12 is installed on the second fan unit mounting plate 7, so that fan units are respectively arranged on the top and bottom of the cabinet to realize air circulation in the cabinet. The fan unit may include a plurality of fans and a wind hood arranged outside the fan.

Between the hood and the display screen 1, a guide air duct plate is provided. The hood of the first fan unit 11 is connected to the bottom of the display screen 1 via the first fan unit guide air duct plate 5, and the hood of the second fan unit 12 is connected to the top of the display screen 1 via the second fan unit guide air duct plate 6. The cabinet is divided into a front-screen heat dissipation duct and a rear-screen heat dissipation duct as shown in FIG4 through the guide air duct plate, the display screen 1, and the front windshield 14 embedded in the bus stop box by the control cabinet. Among them, the space surrounded by the first fan unit guide air duct plate 5, the display screen 1, the second fan unit guide air duct plate 6, the front windshield 14, and the cabinet side panels is the front-screen heat dissipation duct, and the space surrounded by the first fan unit guide air duct plate 5, the display screen 1, the second fan unit guide air duct plate 6, the cabinet cover plate 10, and the cabinet side panels is the rear-screen heat dissipation duct.

Furthermore, the fan of the first fan unit 11 is an induced draft fan, which introduces fresh air outside the cabinet into the cabinet from the bottom of the cabinet. The first fan unit guide duct plate 5 diverts the introduced fresh air, and the diverted fresh air enters the heat dissipation duct in front of the screen and the heat dissipation duct behind the screen respectively; the fan of the second fan unit 12 is an air guide fan (hair dryer), which discharges the air after heat exchange out of the cabinet. As shown in Figure 4, after the fresh air enters the heat dissipation duct behind the screen, it reaches the electrical control module 16, where the fresh air is again blown by the wind to form two heat dissipation ducts again. The back of the display screen 1 and the back of the electrical control module 16 form one duct, and the front of the electrical control module 16 and the cabinet cover 10 form another duct. After the fresh air blows through the electrical control module 16, it merges again to form a heat dissipation duct.

The guide air duct plate is connected obliquely between the fan unit and the display screen 1. The first fan unit guide air duct plate 5 and the second fan unit guide air duct plate 6 have the same structure and are arranged at both ends of the display screen 1. Taking the first fan unit guide air duct plate 5 as an example, the guide air duct plate includes a fan mounting plate, a guide plate and a display screen mounting plate that are integrally formed or sequentially assembled and fixed, and the guide plate is obliquely arranged between the fan mounting plate and the display screen mounting plate.

Specifically, the guide air duct plate is tiltedly connected between the fan unit and the display screen 1, so that the fresh air can enter the heat dissipation duct in front of the screen and the heat dissipation duct behind the screen more smoothly, so that the plane of the display screen mounting plate does not block the fresh air and cause excessive wind resistance.

The fan mounting plate is located at the bottom and is assembled and fixed with the first fan unit mounting plate 4. An escape zone is set on the fan unit mounting plate. The fan cover is set at the escape zone. The bottom of the guide plate at the escape zone is stuck on the top of the fan cover. The display screen mounting plate is located at the top of the guide plate, including a support plate and a side plate. One end of the support plate is connected to the guide plate, and the other end is connected to the side plate. The bottom of the display screen 1 is against the top surface of the support plate, that is, the bottom of the display screen sits on the top surface of the support plate, and the display screen is supported by the support plate. The side plate is against the rear side of the display screen. As shown in Figure 3, the support plate and the side plate form an L shape, and the side plate can play a role in limiting the position of the display screen 1.

The second fan group air guide duct plate 6 has the same structure as the first air guide duct, and is arranged in a mirror image. The display screen mounting plate is located at the bottom of the air guide plate, and the fan mounting plate is located at the top of the air guide plate. The specific structure is not described in detail. The display screen 1 is engaged between the first fan group air guide duct plate 5 and the second fan group air guide duct plate 6, which plays a role of fixing and supporting the display screen 1. At the same time, the side plate of the display screen mounting plate plays a role of limiting the display screen 1.

In the utility model, the first fan unit 11 is installed at the bottom of the cabinet through the first fan unit mounting plate 4, and is used for blowing air into the cabinet so that fresh air is diverted into the cabinet; the second fan unit 12 is installed at the top of the cabinet through the second fan unit mounting plate 7, and is used for exhausting air outside the cabinet; the ventilation volume is evenly and concentratedly distributed, thereby achieving an ideal heat dissipation effect.

The first fan group 11 and the second fan group 12 are respectively composed of four fans. The four fans of the first fan group 11 are arranged in a straight line and installed below the first fan group mounting plate 4 to allow fresh air to blow into the cabinet; the four fans of the second fan group 12 are arranged in a straight line and installed above the second fan group mounting plate 7 to discharge the fresh air in the cabinet to the outside to achieve heat dissipation.

The cabinet side panels are vertical rectangular thin plates, including a cabinet left side panel 8 and a cabinet right side panel 9, which are engaged with both sides of the cabinet, and the top and bottom are respectively fixed or integrally formed with the cabinet top panel, the second fan unit mounting plate 7, the bottom plate, and the first fan unit mounting plate 4. The cabinet left side panel 8 and the cabinet right side panel 9 are sealed and fixed to the left and right ends of the display screen 1, and the heat dissipation duct in front of the screen and the heat dissipation duct behind the screen are sealed, so that the fresh air entering the cabinet through the first fan unit 11 at the bottom of the cabinet is concentrated through the double-layer duct space and then discharged from the cabinet through the second fan unit 12 at the top of the cabinet, and the heat emitted by the electronic display screen 1 and other electrical components in the cabinet is taken out.

After the cabinet is installed in the electronic bus stop box, it fits tightly with the front windshield 14 of the electronic bus stop to form a closed space. A rubber strip 13 with adhesive backing is pasted on the front face of the cabinet to prevent air leakage and rain leakage, so that the space inside the cabinet is completely closed; the rubber strip 13 with adhesive backing plays a role in shock absorption and eliminating friction damage when the cabinet contacts the windshield 14.

Compared with the prior art, the control cabinet and electronic station sign provided by the utility model have the following beneficial effects:

The display screen and electrical control module are fixed and integrated into a whole through the screen fixing beam. When renovating or upgrading the site, you only need to connect and fix the screen fixing beam with the electronic station sign box. The whole installation is simple, fast, time-saving and labor-saving.

The dual-duct heat dissipation structure design divides the internal space formed by the cabinet and the front windshield into two duct spaces: the front heat dissipation duct and the rear heat dissipation duct through the guide duct plate and the display screen. The first fan unit is installed under the first fan unit mounting plate to blow air into the cabinet, and the fresh air is diverted through the guide duct plate and then enters the cabinet;

The second fan unit is installed above the second fan unit mounting plate and exhausts air outside the cabinet to concentrate the air volume and distribute it evenly, effectively ensuring the heat dissipation in front of the screen and the heat dissipation of electrical components behind the screen.

The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims (10)

1. A control cabinet, comprising a cabinet body, a display screen and an electrical control module arranged in the cabinet body, characterized in that: the display screen and the electrical control module are arranged at intervals, fan groups are respectively arranged at the bottom and the top of the cabinet body, and guide duct plates for diverting air volume are correspondingly arranged between each of the fan groups and the display screen, and the display screen, the guide duct plate and the protective glass on the front side of the cabinet body divide the space in the cabinet body into a heat dissipation duct in front of the screen and a heat dissipation duct behind the screen. 2. A control cabinet according to claim 1, characterized in that the display screen and the electrical control module are fixed to each other by a screen fixing beam. 3. A control cabinet according to claim 2, characterized in that a hinge mechanism is installed on the screen fixing beam, and the electrical control module is flipably connected to the screen fixing beam through the hinge mechanism. 4. A control cabinet according to claim 2, characterized in that: the cabinet body includes a left side panel and a right side panel, and the left side panel and the right side panel are provided with holes for the screen fixing beam to pass through, and the left side panel and the right side panel are fitted with both sides of the display screen to seal the left and right sides of the heat dissipation duct in front of the screen and the heat dissipation duct behind the screen. 5. A control cabinet according to claim 1, characterized in that each of the fan units is assembled with the cabinet body via a fan unit mounting plate. 6. A control cabinet according to claim 5, characterized in that: the fan unit mounting plate is generally in a "U" shape, the bend on the same side as the display screen is away from the direction of the display screen, and the end of the bend on the same side as the electrical control module is bent vertically in the direction away from the electrical control module. 7. A control cabinet according to any one of claims 1 to 6, characterized in that the air guide duct plate is installed obliquely between the fan unit and the display screen. 8. A control cabinet according to any one of claims 1 to 6, characterized in that the air guide duct plate comprises a fan mounting plate, a guide plate and a display mounting plate which are integrally formed or sequentially assembled and fixed, and the guide plate is tilted between the fan mounting plate and the display mounting plate. 9. A control cabinet according to claim 8, characterized in that: the display screen mounting plate includes a support plate and a side plate, one end of the support plate is connected to the guide plate, and the other opposite end is connected to the side plate, the support plate abuts against the bottom or top of the display screen, and the side plate abuts against the side of the display screen. 10. An electronic bus stop sign, characterized by comprising the control cabinet according to any one of claims 1 to 9.