Grating screen power supply box and grating screen

Abstract

The utility model discloses a grating screen power supply box and a grating screen, and relates to the grating screen power supply box technology field, the grating screen power supply box comprises a power supply box body, the power supply box body is provided with an inner cavity, the power supply box body is provided with an upper end and a lower end in a height direction, and is provided with a front end and a rear end in a width direction, and the upper end and the lower end of the front end of the power supply box body are respectively provided with a support plate; the supporting plates are symmetrically arranged along the power box body, the longitudinal section of each supporting plate is in an L shape, a front plate is arranged at the end, away from the power box body, of each supporting plate and extends in the length direction of the power box body, a first cavity channel is defined by the front end face of the power box body, the front plates and the supporting plates, and the long edge of the first cavity channel extends in the length direction of the front plates. The first cavity channel covers the front end face of the power supply box body, first through openings are formed in the two opposite side faces of the front plate in the height direction, and the heat dissipation requirement of the power supply module under the normal use condition can be met without a heat dissipation fan.

Description

Technical Field

[0001] The utility model relates to the technical field of a grating screen power supply box, in particular to a grating screen power supply box and a grating screen. Background Art

[0002] The power box of the existing grating screen is usually installed perpendicular to the light bar, and a power module is installed inside the power box. In order to meet the heat dissipation requirements of the power module under normal use and realize rapid heat dissipation of the power box, some power boxes are also equipped with cooling fans, which are used to assist heat dissipation. However, most power boxes have a certain degree of sealing. As a result, the cooling fan cannot quickly blow heat to the outside of the power box, which leads to poor heat dissipation effect of the cooling fan. At the same time, due to the long length of the grating screen, when installing the cooling fan, it is necessary to install multiple cooling fans arranged along the length direction of the power box, which greatly increases the thickness of the power box, resulting in an increase in the projection area of ​​the power box on the grating screen, thereby affecting the light transmittance of the grating screen. Utility Model Content

[0003] The main purpose of the utility model is to provide a grating screen power supply box and a grating screen, aiming to solve the problem in the prior art that multiple cooling fans are installed inside the power supply box, which greatly increases the thickness of the power supply box, resulting in an increase in the projection area of ​​the power supply box on the grating screen, thereby affecting the light transmittance of the grating screen.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A grating screen power box, comprising a power box body, the power box body has an inner cavity, the power box body has an upper end and a lower end in the height direction, and has a front end and a rear end in the width direction, the upper end and the lower end of the front end of the power box body are respectively provided with support plates, the support plates are symmetrically arranged along the power box body, the longitudinal section of the support plate is L-shaped, a front plate is provided at one end of the support plate away from the power box body, the front plate extends along the length direction of the power box body, the front face of the power box body, the front plate and the support plate are combined to form a first cavity, the long side of the first cavity extends along the length direction of the front plate, the first cavity covers the front face of the power box body, the two side faces opposite to each other in the height direction of the front plate are provided with first openings, the first openings are connected to the first cavity, an opening is provided at the connection between the front plate and the support plate, the openings are arranged at intervals along the upper and lower ends of the front plate, and the openings located at the upper end of the front plate are opposite to the openings located at the lower end of the front plate.

[0006] Optionally, a mounting opening is provided on the end of the power box body opposite to the front plate, and the mounting opening is connected to the inner cavity. The power box body is provided with protrusions above and below the mounting opening, respectively, and the protrusions are provided with mounting holes, and the mounting holes are arranged along the edge of the protrusion.

[0007] Optionally, a top plate is provided at the upper end of the power box body, and the top plate is located between the upper mounting hole and the upper end surface of the power box body. The upper end surface of the power box body, the top plate, the support plate and the protrusion together form a second cavity, and the long side of the second cavity extends along the length direction of the top plate. Second openings are provided on two opposite side surfaces in the width direction of the top plate, and the second openings are connected to the second cavity.

[0008] Optionally, a bottom plate is fixedly provided at the lower end of the power box body, and the bottom plate is located between the mounting hole below and the lower end surface of the power box body. The lower end surface of the power box body, the bottom plate, the support plate and the protrusion together enclose a third cavity. A third opening is provided on two opposite side surfaces in the width direction of the bottom plate, and the third opening is connected to the third cavity.

[0009] Optionally, the front plate, the top plate, the bottom plate, the support plate and the projection are all integrally formed with the power box body.

[0010] Optionally, a protruding plate is provided on the front end face of the power box body, and the protruding plate is located in the first cavity. The protruding plate and the power box body are integrally formed, and the long side of the protruding plate extends along the length direction of the power box body. There are multiple protruding plates, and the protruding plates are arranged at intervals along the height direction of the power box body, and there is a gap between the protruding plate and the front plate.

[0011] Optionally, a power module is fixedly disposed in the inner cavity, and a thermally conductive adhesive pad is disposed between the power module and the inner wall of the power box body.

[0012] Optionally, a cover plate is installed on the power box body corresponding to the installation opening, and a fixing hole is opened on the cover plate corresponding to the installation hole.

[0013] Optionally, a groove is formed at one end of the cover plate opposite to the power box body, and a long side of the groove extends along the length direction of the cover plate.

[0014] The utility model also provides a grating screen, comprising the grating screen power supply box.

[0015] The technical solution of the utility model adopts the utility model, by setting a front plate, the front plate and the power box body are enclosed to form a first cavity, when the grating screen equipped with the power box of the utility model is installed horizontally, that is, the power box body is in a vertical state, the heat inside the power box body is conducted through the power box body to the first cavity, the air inside the first cavity expands in volume due to heat, and the density decreases, and it flows upward along the first cavity and is discharged from the first cavity through the first port or opening and takes away the heat, and the external low-temperature air enters the first cavity from the first port at the lower part of the first cavity, this process is continuously circulated to form a chimney effect, similarly, when the grating screen equipped with the power box of the utility model is installed vertically, that is, the power box body is in a horizontal state, the hot air inside the power box body is conducted to the first cavity It flows along the first cavity, passes through the opening on the first cavity and is discharged from the first cavity to take away heat, and the external low-temperature air enters the first cavity from the opening at the lower end. This process is continuously circulated to form a chimney effect, so that the utility model has a good heat dissipation effect. In this way, the utility model does not require a cooling fan to meet the heat dissipation requirements of the power module under normal use. Since there is no need to install a cooling fan, there is no need to significantly increase the thickness of the power box. This solves the problem that the prior art needs to install multiple cooling fans arranged along the length direction of the power box when meeting the heat dissipation requirements of the power module under normal use, which significantly increases the thickness of the power box and increases the projection area of ​​the power box on the grating screen, thereby affecting the light transmittance of the grating screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of a grating screen power supply box of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 This is a schematic diagram of the rear structure of an embodiment of the power box body of the utility model;

[0019] Figure 4 It is a rear view of an embodiment of the grating screen power supply box of the utility model;

[0020] Figure 5 It is a left view of an embodiment of a grating screen power supply box of the utility model.

[0021] Explanation of the accompanying drawings: 1. Power box body; 101. Inner cavity; 102. Mounting port; 2. Front plate; 201. Opening; 3. First cavity; 4. First through port; 5. Convex plate; 6. Cover plate; 601. Groove; 602. Fixing hole; 7. Top plate; 8. Second cavity; 9. Second through port; 10. Bottom plate; 11. Third cavity; 12. Third through port; 13. Thermal conductive pad; 14. Support plate; 15. Convex extension; 1501. Mounting hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0026] The utility model provides a grating screen power supply box.

[0027] See also Figure 1-5 In the embodiment of the utility model, the grating screen power supply box includes a power supply box body 1, the power supply box body 1 opens an inner cavity 101, the power supply box body 1 has an upper end and a lower end in the height direction, and has a front end and a rear end in the width direction, and the upper end and the lower end of the front end of the power supply box body 1 are respectively provided with a support plate 14, the support plate 14 is symmetrically arranged along the power supply box body 1, and the longitudinal section of the support plate 14 is L-shaped, and the end of the support plate 14 away from the power supply box body 1 is provided with a front plate 2, and the front plate 2 extends along the length direction of the power supply box body 1, and the power supply box body The front end face of the body 1, the front plate 2 and the support plate 14 together form a first cavity 3, the long side of the first cavity 3 extends along the length direction of the front plate 2, the first cavity 3 covers the front end face of the power box body 1, and first openings 4 are provided on the two side faces opposite to each other in the height direction of the front plate 2, the first openings 4 are connected to the first cavity 3, an opening 201 is provided at the connection between the front plate 2 and the support plate 14, the openings 201 are spaced apart along the upper and lower ends of the front plate 2, and the openings 201 at the upper end of the front plate 2 are opposite to the openings 201 at the lower end of the front plate 2 one by one.

[0028] The technical solution of the utility model is to set a front plate 2, and the front plate 2 and the power box body 1 are combined to form a first cavity 3, and the first cavity 3 covers the front end surface of the power box body 1. When the grating screen with the power box installed is installed horizontally, that is, the power box body 1 is in a vertical state, after working for a long time, the heat inside the power box body 1 is conducted to the first cavity 3 formed between the front plate 2 and the power box body 1. The air inside the first cavity 3 expands in volume and decreases in density due to heat. It flows upward along the first cavity 3 and is discharged from the first cavity 3 through the first opening 4 or the opening 201 and takes away the heat. The external low-temperature air enters the first cavity 3 from the first opening 4 at the lower part of the first cavity 3. This process is continuously circulated to form a chimney effect. When the grating screen with the power box installed is installed vertically, that is, the power box body 1 is in a horizontal state, after working for a long time, the heat inside the power box body 1 is conducted to the first cavity 3 enclosed between the front plate 2 and the power box body 1. The air inside the first cavity 3 expands in volume and decreases in density due to heat. The air flows along the first cavity 3 through the opening 201 at the upper end and is discharged from the first cavity 3 and takes away the heat. The external low-temperature air enters the first cavity 3 from the opening 201 at the lower end. This process is circulated continuously to form a chimney effect. The chimney effect makes the power box body 1 cool down quickly, and the heat inside the power box body 1 is continuously taken away, so that the power box has a good heat dissipation effect. When the grating screen is in a vertical state, the first opening 4 can be blocked. In this way, the chimney effect is better.

[0029] See also Figure 2 and Figure 3In one embodiment of the utility model, a mounting opening 102 is provided on the end of the power box body 1 opposite to the front plate 2, and the mounting opening 102 is communicated with the inner cavity 101. The power box body 1 is provided with protrusions 15 above and below the mounting opening 102, respectively. The protrusion 15 is provided with mounting holes 1501, and the mounting holes 1501 are arranged along the edge of the protrusion 15.

[0030] The technical solution of the utility model is to set up an installation port 102. During the installation process, the power module is installed inside the power box body 1 through the installation port 102. After the installation is completed, the power box body 1 is fixed by bolts passing through the installation holes 1501 to prevent it from falling off.

[0031] See also Figure 1 and Figure 2 In one embodiment of the utility model, a top plate 7 is provided at the upper end of the power box body 1, and the top plate 7 is located between the upper mounting hole 1501 and the upper end surface of the power box body 1. The upper end surface of the power box body 1, the top plate 7, the support plate 14 and the protrusion 15 together form a second cavity 8, and the long side of the second cavity 8 extends along the length direction of the top plate 7. Second openings 9 are provided on two opposite side surfaces in the width direction of the top plate 7, and the second openings 9 are connected to the second cavity 8.

[0032] In the technical aspect of the utility model, when the grating screen of the utility model is installed horizontally, the power box body 1 is in a vertical state. After working for a long time, the heat inside the power box body 1 is conducted to the second cavity 8 enclosed between the top plate 7 and the power box body 1. The air inside the second cavity 8 expands in volume and decreases in density due to heat. It flows upward along the second cavity 8 and is discharged from the second cavity 8 through the second port 9 at the upper end of the second cavity 8 and takes away the heat. The external low-temperature air enters the second cavity 8 from the second port 9 at the lower part of the second cavity 8. This process is continuously circulated to form a chimney effect, further improving the heat dissipation effect.

[0033] See also Figure 1 and Figure 2 In one embodiment of the utility model, a bottom plate 10 is fixedly provided at the lower end of the power box body 1. The bottom plate 10 is located between the lower mounting hole 1501 and the lower end surface of the power box body 1. The lower end surface of the power box body 1, the bottom plate 10, the support plate 14 and the protrusion 15 together form a third cavity 11. A third opening 12 is provided on two opposite side surfaces in the width direction of the bottom plate 10. The third opening 12 is connected to the third cavity 11.

[0034] When the grating screen of the utility model is installed horizontally, the power box body 1 is in a vertical state. After working for a long time, the heat inside the power box body 1 is conducted to the third cavity 11 enclosed between the bottom plate 10 and the power box body 1. The air inside the third cavity 11 expands in volume and decreases in density due to heat. The air flows upward along the third cavity 11 and is discharged from the third cavity 11 through the third port 12 at the upper end of the third cavity 11 and takes away the heat. The external low-temperature air enters the third cavity 11 from the third port 12 at the lower part of the third cavity 11. This process is circulated continuously to form a chimney effect.

[0035] See also Figure 1 In one embodiment of the utility model, the front plate 2, the top plate 7, the bottom plate 10, the support plate 14 and the protrusion 15 are all integrally formed with the power box body 1.

[0036] The technical solution of the utility model provides an integrally formed front plate 2, top plate 7 and bottom plate 10, so that the speed of heat conduction is faster.

[0037] See also Figure 2 In one embodiment of the utility model, a protruding plate 5 is provided on the front end face of the power box body 1. The protruding plate 5 is located in the first cavity 3. The protruding plate 5 and the power box body 1 are integrally formed. The long side of the protruding plate 5 extends along the length direction of the power box body 1. A plurality of protruding plates 5 are provided. The protruding plates 5 are arranged at intervals along the height direction of the power box body 1, and there is a gap between the protruding plate 5 and the front plate 2.

[0038] The technical solution of the utility model is to set a convex plate 5, which increases the surface area of ​​the front end face of the power box body 1, thereby increasing the heat exchange area with the air inside the first cavity 3, so that the heat exchange speed between the power box body 1 and the air inside the first cavity 3 is faster. Multiple convex plates 5 can increase the surface area of ​​the front end face of the power box body 1 to a large extent, increase the heat exchange area with the air inside the first cavity 3, so that the heat exchange speed between the power box body 1 and the air inside the first cavity 3 is faster. Setting a gap can prevent the first cavity 3 from being separated by the back convex plate 5, thereby making it impossible to form a heat dissipation cavity from the lower end opening 201 to the upper end opening 201.

[0039] See also Figure 3 In one embodiment of the utility model, a power module is fixedly installed in the inner cavity 101 , and a thermal conductive pad 13 is arranged between the power module and the inner wall of the power box body 1 .

[0040] The technical solution of the utility model is to set a thermally conductive adhesive pad 13, and the thermally conductive adhesive pad 13 fills the gap between the power module and the power box body 1, so that the heat generated by the power module is conducted to the power box body 1 more quickly. Preferably, the thermally conductive adhesive pad 13 can be set on the inner wall close to the side of the front plate 2. Since the first cavity 3 can form two heat dissipation cavities according to the installation method of the grating screen, therefore, setting the thermally conductive adhesive pad 13 on the inner wall close to the side of the front plate 2 can conduct the heat to the first cavity 3 more quickly.

[0041] See also Figure 2 In one embodiment of the utility model, a cover plate 6 is installed at a position of the power box body 1 corresponding to the installation opening 102 , and a fixing hole 602 is opened at a position of the cover plate 6 corresponding to the installation hole 1501 .

[0042] During installation, the power module is installed inside the mounting port 102 through the mounting port 102. After the cover plate 6 is put on, bolts are inserted into the mounting holes 1501 and the fixing holes 602 to fix the cover plate 6 to prevent it from falling off. The presence of the cover plate 6 can effectively prevent water from entering the inner cavity 101 through the mounting port 102.

[0043] See also Figure 4 and Figure 5 In one embodiment of the utility model, a groove 601 is formed at one end of the cover plate 6 opposite to the power box body 1 , and the long side of the groove 601 extends along the length direction of the cover plate 6 .

[0044] The technical solution of the utility model is to set the groove 601. The existence of the groove 601 can reduce the weight of the cover plate 6, and at the same time increase the surface area of ​​the cover plate 6, increase the heat exchange area between the cover plate 6 and the external air, and make the heat exchange speed between the cover plate 6 and the external air faster.

[0045] The utility model also provides a grating screen, including a grating screen power box. The specific structure of the grating screen power box refers to the above-mentioned embodiment. Since the grating screen adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A grating screen power supply box, comprising a power supply box body, wherein the power supply box body has an inner cavity, characterized in that: The power box body has an upper end and a lower end in the height direction, and a front end and a rear end in the width direction. The upper end and the lower end of the front end of the power box body are respectively provided with support plates, and the support plates are symmetrically arranged along the power box body. The longitudinal section of the support plate is L-shaped, and a front plate is provided at the end of the support plate away from the power box body. The front plate extends along the length direction of the power box body. The front end face of the power box body, the front plate and the support plate are combined to form a first cavity. The long side of the first cavity extends along the length direction of the front plate. The first cavity covers the front end face of the power box body. First through openings are provided on two opposite side faces of the front plate in the height direction, and the first through opening is connected to the first cavity. An opening is provided at the connection between the front plate and the support plate, and the openings are spaced along the upper and lower ends of the front plate. The openings located at the upper end of the front plate are opposite to the openings located at the lower end of the front plate one by one.

2. The grating screen power supply box according to claim 1, characterized in that: The power box body has an installation opening on one end opposite to the front plate, the installation opening is communicated with the inner cavity, the power box body has protrusions above and below the installation opening, the protrusions have installation holes, and the installation holes are arranged along the edge of the protrusions.

3. The grating screen power supply box according to claim 2, characterized in that: A top plate is provided at the upper end of the power box body, and the top plate is located between the upper mounting hole and the upper end surface of the power box body. The upper end surface of the power box body, the top plate, the support plate and the protrusion together form a second cavity, and the long side of the second cavity extends along the length direction of the top plate. Second openings are provided on two opposite side surfaces in the width direction of the top plate, and the second openings are communicated with the second cavity.

4. The grating screen power supply box according to claim 3, characterized in that: A bottom plate is fixedly provided at the lower end of the power box body, and the bottom plate is located between the mounting hole below and the lower end surface of the power box body. The lower end surface of the power box body, the bottom plate, the support plate and the protrusion together enclose a third cavity. A third opening is provided on two opposite side surfaces in the width direction of the bottom plate, and the third opening is connected to the third cavity.

5. The grating screen power supply box according to claim 4, characterized in that: The front plate, the top plate, the bottom plate, the support plate and the projection are all integrally formed with the power box body.

6. The grating screen power supply box according to claim 1, characterized in that: A convex plate is provided on the front end face of the power box body, and the convex plate is located in the first cavity. The convex plate and the power box body are integrally formed, and the long side of the convex plate extends along the length direction of the power box body. There are multiple convex plates, and the convex plates are arranged at intervals along the height direction of the power box body, and there is a gap between the convex plate and the front plate.

7. The grating screen power supply box according to claim 1, characterized in that: A power module is fixedly arranged in the inner cavity, and a thermal conductive rubber pad is arranged between the power module and the inner wall of the power box body.

8. The grating screen power supply box according to claim 2, characterized in that: A cover plate is installed on the power box body corresponding to the installation opening, and a fixing hole is opened on the cover plate corresponding to the installation hole.

9. The grating screen power supply box according to claim 8, characterized in that: A groove is formed at one end of the cover plate opposite to the power box body, and the long side of the groove extends along the length direction of the cover plate.

10. A grating screen, characterized in that: It comprises a grating screen power supply box as described in any one of claims 1 to 9.

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