Power supply box and display device using same

Abstract

The utility model relates to a power supply box and a display device using the same. The power supply box comprises a box body (31) and an upper cover (33), the upper cover (33) is installed at the open end of the box body (31), the box body (31) and the upper cover (33) define a containing cavity, a circuit board assembly and a heat dissipation piece (38) are installed in the containing cavity, the heat dissipation piece (38) is attached to a heating component of the circuit board assembly, and the heat dissipation piece (38) is connected with the box body (31). The heat dissipation piece (38) abuts against the inner wall of the box body (31) and is in heat conduction connection with the box body, and the heat dissipation piece (38) is used for conducting heat of the circuit board assembly to the box body (31). According to the utility model, the heat generated by the power supply box can be conducted to the box body of the power supply box through the heat dissipation piece, so that the heat dissipation is improved.

Description

Technical Field

[0001] This utility model relates to the field of display devices, and more specifically, to a power supply box and a display device using the power supply box. Background Technology

[0002] Large outdoor displays are typically composed of several display devices pieced together. Each display device includes a frame, several display modules mounted on the frame, and a power supply box mounted on the frame, which supplies power to the display modules. The power supply box generates significant heat during operation; if not dissipated promptly, this heat can affect the lifespan of both the power supply box and the display devices, and may even pose safety hazards. Therefore, an improvement solution is urgently needed. Utility Model Content

[0003] One objective of this application is to improve the heat dissipation of the power supply box.

[0004] Therefore, in a first aspect, this utility model provides a power supply box, including a box body and a top cover, the top cover being installed at the open end of the box body; the box body and the top cover forming a receiving cavity, a circuit board assembly and a heat sink being installed in the receiving cavity, the heat sink being attached to the heat-generating components of the circuit board assembly, the heat sink being abutting against the inner wall of the box body and forming a thermally conductive connection with the box body, for conducting the heat of the circuit board assembly to the box body.

[0005] In one embodiment of the present invention, the box body includes a bottom plate a and a first side wall b extending upward from the edge of the bottom plate a; the top cover can be fastened to the first side wall b.

[0006] In one embodiment of the present invention, the box body is rectangular and includes a bottom plate and a first side wall extending upward from the edge of the bottom plate; the heat dissipation component extends along the width direction of the box body and abuts against the two first side walls in the width direction.

[0007] In one embodiment of the present invention, the power supply box is provided with heat dissipation ridges, which are disposed on the upper cover and / or the box body.

[0008] In one embodiment of the present invention, the heat sink includes a main body and a plurality of heat sink fins extending from the main body; the heat sink fins extend along the width direction of the housing and are thermally connected to two first sidewalls in the width direction.

[0009] In one embodiment of the present invention, a connecting plate detachably connected to the housing is further included. The connecting plate can be connected to the frame of the display device. The connecting plate is a metal component and can be used to transfer the heat of the power supply box to the frame.

[0010] A second aspect of this utility model provides a display device, including a frame for mounting a display module, and a power supply box provided in the first aspect of this utility model. The power supply box is mounted to the frame and forms a thermally conductive connection with the frame, and the power supply box is used to supply power to the display module.

[0011] In one embodiment of this utility model, the frame includes several outer side frames, several vertical beams, and several horizontal beams; the several outer side frames are connected sequentially to form the outer frame of the frame, the two ends of the vertical beams are respectively connected to the corresponding outer side frames to form a thermally conductive connection, the two ends of the horizontal beams are respectively connected to the corresponding vertical beams and the outer side frames to form a thermally conductive connection; the power supply box forms a thermally conductive connection with the vertical beams.

[0012] In one embodiment of this utility model, the frame is provided with frame ridges, and the frame ridges include at least one of the following: a border ridge provided to the outer edge; a vertical beam ridge provided to the vertical beam; and a horizontal beam ridge provided to the horizontal beam.

[0013] In one embodiment of this utility model, the power supply box is located between two vertical beams. The power supply box is detachably installed on the two vertical beams via a connecting plate. The connecting plate is a metal part and can be used to transfer the heat of the power supply box to the vertical beams.

[0014] In one embodiment of the present invention, the connecting plate is made of sheet material and includes a first connecting portion detachably connected to the power box and a second connecting portion detachably connected to the frame; the first connecting portion and the second connecting portion form an L-shaped bend; one of the first connecting portion and the second connecting portion allows operation from the back of the frame, and the other allows operation from the front of the frame, thereby allowing the power box to be installed and removed from both the front and back of the frame.

[0015] In one embodiment of this utility model, adjacent outer frames are detachably connected by corner brackets to form a thermally conductive connection.

[0016] By implementing this utility model, the heat generated by the power supply box can be conducted to the box body through the heat dissipation component, thus improving heat dissipation. Attached Figure Description

[0017] To further illustrate the specific technical details of this case, please refer to the accompanying drawings, in which:

[0018] Figure 1 A schematic diagram of the back of a display device provided in an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of the front of the display device shown;

[0020] Figure 3 yes Figure 2 The diagram shown is an illustration of the display device after part of the display module has been removed.

[0021] Figure 4 Figure 3 A schematic diagram of the back of the display device shown;

[0022] Figure 5 and Figure 6 for Figure 1 Schematic diagrams of the power supply box used by the display device from different viewing angles;

[0023] Figure 7 yes Figure 3 A partial enlarged view of part A of the display device shown;

[0024] Figure 8 yes Figure 4 A partial enlarged view of part B of the display device shown;

[0025] Figure 9 yes Figure 4 An exploded view of the power supply box shown.

[0026] Figure 10 yes Figure 4 A partial enlarged view of section C of the display device shown;

[0027] Figure 11 yes Figure 4 A partial enlarged view of section D of the display device shown;

[0028] Figure 12 yes Figure 5 An exploded view of the power supply box shown.

[0029] Figure 13 yes Figure 5 A schematic cross-sectional view of the power supply box shown.

[0030] Figure 14 yes Figure 12 A partial enlarged view of part E of the power supply box shown. Detailed Implementation

[0031] The technical solutions in the embodiments of this utility model will now be described with reference to the accompanying drawings.

[0032] refer to Figure 1One embodiment of the present invention provides a display device 100 including a frame 10, a plurality of display modules 20 mounted on the frame 10, and a power supply box 30 mounted on the frame 10, etc., the power supply box 30 being used to supply power to the display modules 20. In this embodiment, there are 8 display modules 20, mounted on the frame 10 in a 4-row, 2-column arrangement; however, the present invention is not limited to this specific configuration.

[0033] In this embodiment, the display module 20 is an LED display module, including a substrate and an LED display array mounted on the front side of the substrate. The front side of the display module 20 is the light-emitting surface and needs to face the audience when in use. Figure 1 The back side of the substrate is schematically shown. Understandably, the display module 20 generates heat when it is in operation. The display module 20 can transfer heat to the frame 10 by thermal radiation or thermal conduction. Preferably, the display module 20 is thermally connected to the frame 10 so that heat can be transferred to the frame 10 by thermal conduction.

[0034] In this embodiment, the frame 10 includes four sequentially connected outer frame edges 11. Adjacent outer frame edges 11 are connected by corner brackets 13. Both the outer frame edges 11 and the corner brackets 13 are thermally conductive metal parts, thereby transferring heat between them. The outer frame edges 11 and the corner brackets 13 are detachably connected, making it convenient to select an appropriate length of outer frame edge 11 as needed to form a frame 10 of a suitable size.

[0035] In this embodiment, the four outer frame borders form a rectangle, namely the upper outer frame border, the lower outer frame border, the left outer frame border, and the right outer frame border. The frame 10 also includes two vertical beams 15 and six horizontal beams 17. The two vertical beams 15 are arranged in parallel, and the two ends of each vertical beam 15 are connected to the upper outer frame border and the lower outer frame border respectively, forming a thermally conductive connection. One vertical beam 15 is connected to the left outer frame border by three horizontal beams 17, and the other vertical beam 15 is connected to the right outer frame border by three horizontal beams 17. The vertical beams 15 and horizontal beams 17 are also thermally conductive metal parts, and thermally conductive connections are formed at their joints. The display module 20 is arranged in the corresponding grids divided by the horizontal beams 17. The power supply box 30 is located between the two vertical beams 15, installed to the two vertical beams 15 and forming a thermally conductive connection, thereby conducting the heat generated by the power supply box 30 to the frame 10.

[0036] refer to Figure 2 After the display device 100 is assembled, the display module 20 covers the front of the frame 10, blocking the frame 10 and the power supply box 30, etc.

[0037] refer to Figure 3 and Figure 4The frame 10 of the display device 100 is provided with a plurality of connecting portions 18, each connecting portion 18 having a non-circular connecting hole 19. The display module 20 is detachably mounted to the connecting portion 18 via the disassembly structure 50. The connecting portion 18 may be integrally provided to the frame 10, for example, as part of the vertical beam 15, or it may be a component additionally connected to the frame.

[0038] refer to Figures 3 to 6 The power supply box 30 is mounted to the vertical beam 15 via a connecting plate 39. The power supply box 30 is elongated and has a cable 37 at one end for connecting to an external power source, etc. The connecting plate 39 is a heat-conducting metal component, which facilitates the conduction of heat from the power supply box 30 to the vertical beam 15.

[0039] In this embodiment, the power supply box 30 includes a box body 31 and a top cover 33, with the top cover 33 mounted to the open end of the box body 31. One side of the top cover 33 is rotatably mounted to one side of the box body 31 via several hinges 35, and the other side of the top cover 33 is equipped with several latches 36 for locking to the other side of the box body 31. The box body 31 and the top cover 33 form a closed space for housing circuit boards and related components (collectively referred to as circuit board assemblies).

[0040] refer to Figures 7 to 9 , Figures 12 to 14 The power supply box 31 includes a base plate 31a and a first sidewall 31b extending upward from the edge of the base plate 31a. The outer surface of the base plate 31a has an outwardly extending connecting seat 32, which is integrally formed with the base plate 31. A connector is disposed within the connecting seat 32 to connect with the display module 20. Preferably, an annular sealing ring is fitted around the outer periphery of the connecting seat 32 to enhance its waterproof connection with the display module 20. The power supply box 30 housing is provided with heat dissipation ridges 33f to accelerate heat dissipation. The heat dissipation ridges 33f are provided at least up to the top cover 33. Understandably, heat dissipation ridges can be provided on both the top cover 33 and the box 31 as needed.

[0041] When the power supply box 30 is working, its circuit board assembly, especially the chips, will generate heat. In this specification and claims, the heat-generating components in the circuit board assembly are collectively referred to as heat-generating components. A heat sink 38 is installed inside the power supply box 30. The heat sink 38 is attached to the heat-generating components of the circuit board assembly to absorb the heat generated by the heat-generating components. The heat sink 38 abuts against the inner wall of the box body 31 and forms a thermally conductive connection with the box body 31, used to conduct heat from the circuit board assembly to the box body 31. In this embodiment, the box body 31 is cuboid in shape, including a base plate 31a and a first sidewall 31b extending upward from the edge of the base plate 31a. The heat sink 38 extends along the width direction of the box body 31 and abuts against the two first sidewalls 31b in the width direction, thereby increasing the contact area and improving heat conduction efficiency. Preferably, the heat sink 38 includes a main body and a plurality of heat dissipation fins 38f extending from the main body. The heat dissipation fins 38f extend along the width direction of the box body 31 and are thermally connected to the two first sidewalls 31b in the width direction.

[0042] The power supply box 30 also includes a first waterproof component 41 and a second waterproof component 43 sandwiched between the bottom cover 31 and the top cover 33. The first waterproof component 41 and the second waterproof component 43 form a double waterproof layer in at least a partial area to strengthen the waterproof connection between the bottom cover 31 and the top cover 33. The first waterproof component 41 and the second waterproof component 43 can be arranged adjacent to each other or at a certain distance.

[0043] In this embodiment, the first waterproof component 41 is sandwiched between the top edge 31d of the first sidewall 31b and the top cover 33, and the second waterproof component 43 is sandwiched between the outer side of the first sidewall 31b and the top cover 33. The first waterproof component 41 is a closed-loop ring. The bottom surface 34 of the top cover 33 is provided with a first receiving groove 33c, and the first waterproof component 41 is received in the first receiving groove 33c. In this embodiment, the first waterproof component 41 has a first groove 42 near the bottom cover 31, and the first groove 42 of the first waterproof component 41 is installed to the top edge 31d of the first sidewall 31b, thereby enhancing stability and waterproofness.

[0044] The second waterproof component 43 can also be a closed-loop ring. In an alternative embodiment, the second waterproof component 43 is a non-closed-loop ring, or formed from several discrete waterproof components. Preferably, the second waterproof component 43 has a D-shaped cross-section, including a sealing plane 43a and a sealing arc surface 43b sequentially connected to each other. The sealing plane 43a abuts against the first sidewall 31b of the base 31, and the sealing arc surface 43b abuts against the sidewall 35 of the upper cover 33. The first sidewall 31b of the bottom cover 31 is provided with a second receiving groove 31c, and the second waterproof component 43 is received in the second receiving groove 31c. Understandably, in an alternative embodiment, the second receiving groove 31c can be provided on the sidewall 35 of the upper cover 33.

[0045] Preferably, the second waterproof component 43 is provided with a through hole 44 extending along its length direction, and the diameter direction of the through hole 44 is squeezed by the bottom cover 31 and the top cover 33.

[0046] The power supply box 30 is detachably mounted to the frame 10 via a connecting plate 39. The connecting plate 39 includes a first connecting portion 46 detachably connected to the power supply box 30 and a second connecting portion 48 detachably connected to the frame 10. The first connecting portion 46 is connected to an end of the power supply box 30, allowing operation from the rear of the frame 10, thereby allowing the power supply box 30 to be installed and removed from the rear of the frame 10. The second connecting portion 48 is connected to the front of the vertical beam 15, allowing operation from the front of the frame 10, thereby allowing the power supply box 30 to be installed and removed from the front of the frame 10. Understandably, if the second connecting portion 48 is connected to the rear of the vertical beam 15, the second connecting portion 48 can be operated from the rear of the frame 10; correspondingly, the first connecting portion 46 can be operated from the front of the frame 10.

[0047] In this embodiment, the first connecting part 46 and the second connecting part 48 form an L-shaped bend. The second connecting part 48 is detachably connected to the front of the frame 10, and the first connecting part 46 is detachably connected to the end of the power supply box 10.

[0048] Preferably, both the first connecting part 46 and the second connecting part 48 are sheet-like, and the connecting plate 39 is formed by bending the sheet material. The power supply box 30 is located between the two vertical beams 15. The second connecting part 48 is detachably connected to the two vertical beams 15 by screws, and the first connecting part 46 is detachably connected to the end of the power supply box 30 by screws. The connecting plate 39 is a heat-conducting metal part, which facilitates the conduction of heat from the power supply box 30 to the frame 10.

[0049] refer to Figure 10 and Figure 11 In this embodiment, the outer frame 11 is provided with frame ridges 11f. The frame ridges 11f accelerate heat dissipation and also have an anti-slip function, making it easier for users to move the frame 10 or display device 100 using the outer frame 11. The vertical beam 15 can also be provided with vertical beam ridges 15f, which also accelerate heat dissipation. The horizontal beam 17 can also be provided with horizontal beam ridges 17f, which also accelerate heat dissipation. When the outer frame 11, vertical beam 15, and horizontal beam 17 are all provided with corresponding ridges, the heat dissipation effect is optimal. At the same time, it also increases the friction coefficient of the frame 10, making it easier for users to move. Understandably, ridges can be provided on one or two of the outer frame 11, vertical beam 15, and horizontal beam 17 as needed.

[0050] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A power supply box, comprising a box body (31) and a top cover (33), the top cover (33) being mounted to the open end of the box body (31), characterized in that, The box body (31) and the top cover (33) form a receiving cavity, in which a circuit board assembly and a heat sink (38) are installed. The heat sink (38) is attached to the heat-generating components of the circuit board assembly and abuts against the inner wall of the box body (31) and forms a thermally conductive connection with the box body, so as to conduct the heat of the circuit board assembly to the box body (31).

2. The power supply box as described in claim 1, characterized in that, The box (31) is rectangular and includes a base plate (31a) and a first sidewall (31b) extending upward from the edge of the base plate (31a); the heat sink (38) extends along the width direction of the box (31) and abuts against the two first sidewalls (31b) in the width direction.

3. The power supply box as described in claim 1, characterized in that, The power supply box (30) is provided with heat dissipation ridges (33f), which are provided on the upper cover (33) and / or the box body.

4. The power supply box as described in claim 2, characterized in that, The heat sink (38) includes a main body and a plurality of heat sink fins (38f) extending from the main body; the heat sink fins (38f) extend along the width direction of the housing (31) and are thermally connected to the two first sidewalls (31b) in the width direction.

5. A display device, comprising a frame (10) for mounting a display module (20), and further comprising a power supply box as claimed in any one of claims 1 to 4, the power supply box being mounted to the frame (10) and forming a thermally conductive connection with the frame (10), the power supply box (30) being used to supply power to the display module (20).

6. The display device as claimed in claim 5, characterized in that, The frame (10) includes several outer frame edges (11), several vertical beams (15), and several horizontal beams (17); the several outer frame edges (11) are connected in sequence to form the outer frame of the frame (10); the two ends of the vertical beams (15) are respectively connected to the corresponding outer frame edges (11) and form a thermally conductive connection; the two ends of the horizontal beams (17) are respectively connected to the corresponding vertical beams (15) and the outer frame edges (11) and form a thermally conductive connection; the power supply box (30) forms a thermally conductive connection with the vertical beams (15).

7. The display device as claimed in claim 6, characterized in that, The frame (10) is provided with frame ridges, and the frame ridges include at least one of the following: A border ridge (11f) is provided on the outer border (11). Vertical beam ridges (15f) are provided on the vertical beam (15); The crossbeam ridge (17f) is provided on the crossbeam (17).

8. The display device as claimed in claim 7, characterized in that, The power box (30) is located between two vertical beams (15). The power box (30) is detachably installed on the two vertical beams (15) via a connecting plate (39). The connecting plate (39) is a metal part and can be used to transfer the heat of the power box to the vertical beams (15).

9. The display device as claimed in claim 8, characterized in that, The connecting plate (39) is made of sheet material and includes a first connecting portion (46) detachably connected to the power box (30) and a second connecting portion (48) detachably connected to the frame (10); the first connecting portion (46) and the second connecting portion (48) form an L-shaped bend; one of the first connecting portion (46) and the second connecting portion (48) allows operation from the back of the frame (10), and the other allows operation from the front of the frame (10), thereby allowing the power box (30) to be installed and removed from both the front and back of the frame (10).

10. The display device as claimed in claim 6, wherein adjacent peripheral bezels (11) are detachably connected by corner brackets (13) and form a thermally conductive connection.

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