Control box and projector

Abstract

The utility model relates to the technical field of projectors, and discloses a control box and a projector, and the control box comprises a box housing, a backboard, at least two groups of guide structures, and at least two board cards. The back plate is connected with the box shell and is provided with a plug board surface and a wiring surface, and the plug board surface is opposite to the wiring surface; the at least two groups of guide structures are connected with the box shell and are positioned on one side of the back plate, which is towards the inserting plate surface; and one board card corresponds to one group of guide structures, and each board card is in guide fit with the corresponding group of guide structures and is inserted into the insertion board surface of the back board. Through the arrangement, installation, later maintenance, replacement and the like of the board card are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of projectors, in particular to a control box and a projector. Background Art

[0002] In a projector, since there are many functional modules that need to be controlled (for example, a light source module, a cooling module, etc.), it is often necessary to install multiple boards to realize circuit control of different functional modules.

[0003] Typically, when multiple boards are assembled into a machine, each board needs to be wired separately to be electrically connected to a corresponding functional module, which is inconvenient for the installation, subsequent maintenance, and replacement of the boards. Utility Model Content

[0004] The embodiments of the utility model aim to provide a control box and a projector, so as to solve the technical problems in the prior art that the board and card of the projector are inconvenient to install, and difficult to maintain and replace.

[0005] In a first aspect, an embodiment of the utility model provides a control box, the control box comprising:

[0006] Box shell;

[0007] A back plate connected to the box shell, the back plate having a board plugging surface and a wiring surface, the board plugging surface and the wiring surface are opposite to each other;

[0008] At least two sets of guide structures are connected to the box shell, and at least two sets of guide structures are located on the side of the back plate to which the plug-in surface faces;

[0009] At least two boards, one board corresponds to a group of guide structures, each board is matched with the corresponding group of guide structures and inserted into the board surface of the backplane.

[0010] In some embodiments, the backplane is installed on the outside of the box shell, and the plug-in end of the board card passes through the box shell and is plugged into the plug-in surface of the backplane.

[0011] In some embodiments, each group of guide structures includes two guide strips, which are respectively arranged on the opposite side walls of the box shell, the two guide strips are parallel to each other, and each guide strip is arranged in a direction perpendicular to the back panel, and the opposite edges of the board are respectively guided and matched along the two guide strips.

[0012] In some embodiments, both guide bars are provided with through slots, the notches of the through slots of the two guide bars face each other, and the two opposite edges of the board are respectively inserted into the through slots of the two guide bars;

[0013] Each through slot has a first limiting wall, a second limiting wall and a third limiting wall, the third limiting wall is connected between the first limiting wall and the second limiting wall, the plate card is located between the third limiting walls of the through slots of the two guide strips, and each edge is located between the first limiting wall and the second limiting wall of the corresponding through slot.

[0014] In some embodiments, a guide groove is provided at one end of the through slot away from the back plate, one end of the guide groove is connected to the through slot, and the other end of the guide groove expands outward in a direction away from the through slot.

[0015] In some embodiments, the control box further comprises at least two cover plates, one cover plate corresponding to one board card, the cover plate being arranged at one end of the board card away from the back plate, the cover plate being connected to the box shell, the cover plate being provided with a flange, and the flange being against the bottom surface of the board card.

[0016] In some embodiments, the control box further comprises a fastener connecting an end of the card away from the backplane and the flange.

[0017] In some embodiments, the control box also includes a heat dissipation device, which is connected to the box shell.

[0018] In some embodiments, heat dissipation holes are provided on opposite side walls of the box shell, and the heat dissipation holes on the opposite side walls of the box shell and the gap between two adjacent boards form a heat dissipation duct;

[0019] The heat dissipation device comprises a fan, and the fan is arranged on the outer side of one of the two opposite side walls.

[0020] In a second aspect, an embodiment of the utility model provides a projector, and the projector includes the control box as described above.

[0021] Compared with the prior art, in the embodiments of the utility model, on the first hand, a backplane serving as a transfer is provided between the board and the functional module, and each board is installed on the same backplane by plugging in, and each board is electrically connected to the corresponding functional modules through the backplane. In this way, each board does not need to be wired when plugged into the backplane, which facilitates the installation of the board and the subsequent maintenance and replacement, simplifies the wiring of the board, and realizes modular plug-in and pull-out of the board. On the second hand, a guide structure is provided to provide a guiding function when the board is plugged in, so that the board can be quickly and accurately plugged into the backplane along the guide structure, which facilitates the plug-in of the board on the backplane. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or several embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1It is a three-dimensional diagram of a control box provided in one embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Another perspective view of the control box shown;

[0025] Figure 3 yes Figure 1 The exploded view of the control box shown;

[0026] Figure 4 yes Figure 1 Another exploded view of the control box shown;

[0027] Figure 5 yes Figure 4 A schematic structural diagram of a guide strip of the guide structure shown;

[0028] Figure 6 yes Figure 3 The schematic diagram of the structure of the board and the cover plate shown;

[0029] Figure 7 yes Figure 1 The schematic cross-sectional view of the control box shown along the AA direction;

[0030] Figure 8 It is a three-dimensional diagram of a projector provided by another embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on another element, or there can be one or more centered elements therebetween. The terms "upper", "lower", "left", "right", "upper end", "lower end", "top" and "bottom" used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention.

[0033] See also Figures 1 to 4 , Figure 1 is a three-dimensional diagram of a control box 100 provided in one embodiment of the present invention. Figure 2 yes Figure 1 Another perspective view of the control box 100 shown, Figure 3 yes Figure 1 The structure of the control box 100 is shown in FIG. Figure 4 yes Figure 1 Another angle structural exploded view of the control box 100 is shown. The embodiment of the utility model provides a control box 100, which is installed in a projector and is used to control the functional modules of the projector. The control box 100 includes a box shell 10, a back plate 20, at least two sets of guide structures 30 and at least two boards 40.

[0034] The back panel 20 is connected to the housing 10 and has a board surface 201 and a wiring surface 202. The board surface 201 and the wiring surface 202 are opposite to each other. The board surface 201 is used for plugging with the board 40, and the wiring surface 202 is used for electrically connecting with the functional module of the projector.

[0035] The at least two groups of guide structures 30 are connected to the box shell 10 , and the at least two groups of guide structures 30 are located on the side of the back plate 20 that the board insertion surface 201 faces.

[0036] One board card 40 corresponds to a group of guide structures 30. Each board card 40 is guided and matched with the corresponding group of guide structures 30 and inserted into the plug-in surface 201 of the backplane 20. Each board card 40 is electrically connected to the corresponding functional module through the backplane 20, thereby realizing the circuit control of the functional module by the board card 40.

[0037] In the embodiments of the utility model, on the first hand, a backplane 20 serving as a transfer is provided between the board 40 and the functional modules, and each board 40 is installed on the same backplane 20 by plugging in, and each board 40 is electrically connected to the corresponding functional modules through the backplane 20. In this way, each board 40 does not need to be wired when plugged in with the backplane 20, which facilitates the installation of the board 40 and the subsequent maintenance and replacement, simplifies the routing of the board 40, and realizes modular plugging and unplugging of the board 40. On the second hand, a guide structure 30 is provided to provide a guiding function when the board 40 is plugged in, so that the board 40 can be quickly and accurately plugged into the backplane 20 along the guide structure 30, which facilitates the plugging of the board 40 on the backplane 20.

[0038] It is understandable that the type of the board 40 can be selected according to the type of the functional module to be controlled. For example, if the functional module is a light source module, then the board 40 corresponding to the light source module is a light source control board, which is used to control the switch and brightness adjustment of the light source module; for another example, if the functional module is a cooling module, then the board 40 corresponding to the cooling module is a temperature control board, which is used to monitor the temperature of the cooling object through a sensor and control the cooling module to work according to the temperature.

[0039] like Figures 1 to 4 As shown, the at least two boards 40 are spaced apart from each other in the upper and lower parts, each board 40 is received in the inner side of the housing 10 , and each board 40 is perpendicular to the backplane 20 .

[0040] In some embodiments, the back panel 20 is installed on the outside of the box shell 10, and the plug-in end of the board 40 passes through the box shell 10 and is plugged into the plug-in surface 201 of the back panel 20. In this way, the wiring surface 202 of the back panel 20 is exposed on the outside of the box shell 10, thereby facilitating the wiring of the wiring surface 202 of the back panel 20 with the functional module of the projector.

[0041] In some embodiments, a flange structure 101 is provided on the side adjacent to the edge of the box shell 10 and the back panel 20, and a plurality of wire holes 102 are provided on the flange structure 101. The wire holes 102 are used to allow wires connected to the wiring surface 202 of the back panel 20 to pass through, thereby facilitating wiring and reducing line entanglement.

[0042] In some other embodiments, the backplane 20 may also be installed on the inner side of the housing 10, and the wires connected to the wiring surface 202 of the backplane 20 pass through the housing 10 to be connected to the functional module.

[0043] like Figure 4 As shown, in some embodiments, each group of guide structures 30 includes two guide strips 31, and the two guide strips 31 are respectively arranged on the opposite side walls 11 of the box shell 10, the two guide strips 31 are parallel to each other, and each guide strip 31 is arranged in a direction perpendicular to the backplane 20, and the opposite edges of the board card 40 are respectively guided and matched along the two guide strips 31. In this way, the two guide strips 31 guide the opposite edges of the board card 40 at the same time, which can prevent the board card 40 from being skewed on any of the two opposite edges during the insertion process, and after the board card 40 is inserted into the backplane 20 along the two guide strips 31, the board card 40 is perpendicular to the backplane 20, which can ensure that the insertion point between the board card 40 and the backplane 20 has good electrical contact.

[0044] Please also read Figure 5 , Figure 5 yes Figure 4The structural schematic diagram of the guide bar 31 of the guide structure 30 shown in the figure, in some embodiments, the two guide bars 31 are each provided with a through slot 301, the notches of the through slots 301 of the two guide bars 31 face each other, and the two opposite edges of the board 40 are respectively inserted into the through slots 301 of the two guide bars 31. Each through slot 301 has a first limiting wall 3011, a second limiting wall 3012 and a third limiting wall 3013, the third limiting wall 3013 is connected between the first limiting wall 3011 and the second limiting wall 3012, the board 40 is located between the third limiting wall 3013 of the through slots 301 of the two guide bars 31, and each edge is located between the first limiting wall 3011 and the second limiting wall 3012 of the corresponding through slot 301.

[0045] In this embodiment, the first limiting wall 3011 and the second limiting wall 3012 of the through slots 301 of the two guide strips 31 can limit the overall upward and downward displacement of the board card 40 relative to the back plate 20, and the third limiting wall 3013 of the through slots 301 of the two guide strips 31 can limit the overall left and right displacement of the board card 40 relative to the back plate 20, so that the board card 40 can only be inserted into the board card 40 in a direction perpendicular to the board card 40 under the limitation of each through slot 301, thereby ensuring the accurate insertion of the board card 40 and the back plate 20; at the same time, the through slot 301 can also support the board card 40 at the edge of the board card 40, share the self-weight of the board card 40, avoid the deformation and poor insertion of the plug-in end of the board card 40 due to the concentrated effect of the self-weight of the board card 40, and help to ensure the stable insertion between the board card 40 and the back plate 20.

[0046] In some embodiments, a guide groove 302 is provided at one end of the through slot 301 away from the back plate 20, one end of the guide groove 302 is connected to the through slot 301, and the other end of the guide groove 302 expands outward in a direction away from the through slot 301, that is, along the direction pointing to the back plate 20, the cross-section of the guide groove 302 gradually becomes smaller until it is equal to the cross-section size of the through slot 301. In this way, when inserting the board 40, it is only necessary to make the edge of the board 40 fall into the range of the guide groove 302, and the guide groove 302 can guide the edge of the board 40 to be inserted into the through slot 301, so that the board 40 can be quickly inserted into the through slot 301 of the guide bar 31 and guided by the through slot 301.

[0047] In a specific implementation process, the guide strip 31 can be fixed on the box shell 10 by screw locking, welding, etc.

[0048] In some other embodiments, the guide structure 30 may also be other structures, not limited to the above-mentioned guide strip 31 structure. For example, the guide structure 30 is a strip groove structure opened on the opposite side walls 11 of the box shell 10, and the opposite two edges of the board 40 are respectively guided and matched with the strip groove structure on the opposite side walls 11 of the box shell 10.

[0049] See also Figure 6 , Figure 6 yes Figure 3 The structural schematic diagram of the board 40 and the cover 50 shown in the figure, in some embodiments, the control box 100 also includes at least two cover plates 50, one cover plate 50 corresponds to one board 40, the cover plate 50 is arranged at the end of the board 40 away from the back plate 20, the cover plate 50 is connected to the box shell 10, the cover plate 50 is provided with a flange 501, the flange 501 is against the bottom surface of the board 40, the flange 501 can support the end of the board 40 away from the back plate 20, share the self-gravity of the board 40, and further ensure the stable insertion of the board 40 and the back plate 20.

[0050] In some embodiments, a fastener 60 is further included, and the fastener 60 connects one end of the board 40 away from the backplane 20 and the flange 501, so that the board 40 and the cover 50 are fixed to each other. After the cover 50 is fixed to the box shell 10, the board 40 is also fixed relative to the box shell 10, which improves the stability of the board 40 after being inserted into the backplane 20, and can prevent the plug-in end of the board 40 from loosening from the backplane 20.

[0051] The fastener 60 may be a screw, and the screw thread connects the back plate 20 and the flange 501 .

[0052] During the operation of each board 40, each board 40 generates a certain amount of heat. If the heat accumulates inside the housing 10, it is easy to cause the temperature inside the housing 10 to rise, thereby affecting the normal operation of each board 40. Therefore, in some embodiments, the control box 100 further includes a heat sink 70, which is connected to the housing 10. The heat sink 70 is used to provide heat dissipation so that the heat generated by each board 40 during operation can be dissipated in time, thereby ensuring the normal operation of each board 40.

[0053] See also Figure 7 , Figure 7 yes Figure 1 The control box 100 is shown in a cross-sectional view along the AA direction. In some embodiments, the two opposite side walls 11 of the box shell 10 are provided with heat dissipation holes 103. The heat dissipation holes 103 on the two opposite side walls 11 of the box shell 10 and the gap between two adjacent boards 40 form a heat dissipation duct. The heat dissipation device 70 includes a fan 71, which is arranged on the outer side of one of the two opposite side walls 11.

[0054] When the fan 71 is started, the heat dissipation holes 103 on the opposite side walls 11 of the box shell 10 will form convection, and air enters the inner side of the box shell 10 through the heat dissipation holes 103 on the other of the two side walls. The air flows in the gap between two adjacent boards 40 and takes away the heat generated by the boards 40 when they are working, and then flows out of the outside of the box shell 10 through the heat dissipation holes 103 on one of the two side walls, and the cycle continues.

[0055] In some embodiments, the heat dissipation device 70 further includes a mounting cover 72, which covers the outer side of one of the two opposite side walls 11, so that a covering space 701 is formed between the mounting cover 72 and one of the two opposite side walls 11, and the covering space 701 is connected to each heat dissipation hole 103 on one of the two opposite side walls 11. The fan 71 is mounted on the mounting cover 72.

[0056] When the fan 71 is started, negative pressure can be formed in the cover space 701, thereby sucking the inner air of the housing 10 through the heat dissipation holes 103.

[0057] In some other embodiments, the heat dissipation device 70 may also be other devices for providing heat dissipation, such as a water cooling plate. The water cooling plate is attached to the box shell 10. The heat generated by the board 40 when working is transferred to the water cooling plate through heat conduction and dissipated by the water cooling plate.

[0058] like Figure 8 As shown, Figure 8 3 is a stereoscopic diagram of a projector 1000 provided in yet another embodiment of the present invention. This embodiment further provides a projector 1000, and the projector 1000 includes the control box 100 as described in any of the above embodiments.

[0059] The projector 1000 includes a housing 200 having an opening 210 . The control box 100 is received in the housing 200 , and each cover plate 50 of the control box 100 is disposed at the opening 210 . This facilitates the installation, maintenance, and replacement of the board 40 .

[0060] In a specific implementation process, the screws are threadedly connected to the cover plate 50 , the outer shell 200 and the box shell 10 in sequence, so that the cover plate 50 is fixed to the outer shell 200 and also fixed to the box shell 10 .

[0061] The projector 1000 of the embodiment of the utility model also has the advantages of the control box 100 described above, which will not be described in detail here.

[0062] It should be particularly noted that the projector provided in the embodiment of the utility model only shows the part related to the technical problem to be solved by the embodiment of the utility model. It can be understood that the projector provided in the embodiment of the utility model also includes other structures for realizing the functions of the projector, including but not limited to optical-mechanical components, heat dissipation components, etc.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Under the idea of ​​the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A control box, characterized in that: include: Box shell; A back plate connected to the box shell, the back plate having a board plugging surface and a wiring surface, the board plugging surface and the wiring surface facing away from each other; At least two sets of guide structures are connected to the box shell, and the at least two sets of guide structures are located on the side to which the plug-in surface of the back plate faces; At least two boards, one board corresponds to a group of guide structures, and each board is guided and matched with the corresponding group of guide structures and inserted into the board surface of the backplane.

2. The control box according to claim 1, characterized in that: The backplane is installed on the outer side of the box shell, and the plug-in end of the board passes through the box shell and is plugged into the plug-in board surface of the backplane.

3. The control box according to claim 1, characterized in that: Each group of the guide structures includes two guide bars, which are respectively arranged on the opposite side walls of the box shell, the two guide bars are parallel to each other, and each guide bar is arranged in a direction perpendicular to the back plate, and the opposite edges of the board are guided and matched along the two guide bars respectively.

4. The control box according to claim 3, characterized in that: The two guide bars are each provided with a through slot, the notches of the through slots of the two guide bars face each other, and the two opposite edges of the board are respectively inserted into the through slots of the two guide bars; Each of the through slots has a first limiting wall, a second limiting wall and a third limiting wall, the third limiting wall is connected between the first limiting wall and the second limiting wall, the plate card is located between the third limiting walls of the through slots of the two guide strips, and each of the edges is located between the first limiting wall and the second limiting wall of the corresponding through slot.

5. The control box according to claim 4, characterized in that: A guide groove is provided at one end of the through slot away from the back plate, one end of the guide groove is connected to the through slot, and the other end of the guide groove expands outward in a direction away from the through slot.

6. The control box according to claim 1, characterized in that: It also includes at least two cover plates, one cover plate corresponds to one board card, the cover plate is arranged at one end of the board card away from the back plate, the cover plate is connected to the box shell, and the cover plate is provided with a flange, and the flange is against the bottom surface of the board card.

7. The control box according to claim 6, characterized in that: A fastener is also included, and the fastener connects one end of the board away from the backplane and the flange.

8. The control box according to claim 1, characterized in that: It also includes a heat dissipation device, which is connected to the box shell.

9. The control box according to claim 8, characterized in that: The two opposite side walls of the box shell are provided with heat dissipation holes, and the heat dissipation holes on the two opposite side walls of the box shell and the gap between two adjacent boards form a heat dissipation duct; The heat dissipation device comprises a fan, and the fan is arranged on the outer side of one of the two opposite side walls.

10. A projector, characterized in that: Comprising a control box as described in any one of claims 1 to 9.

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