JP2019091768A - Cable television broadcast device, substrate module, and maintenance method of cable television broadcast device - Google Patents

Abstract

To provide a cable television broadcast device which can achieve compactification while securing proper cooling by air-cooling.SOLUTION: A cable television broadcast device 100 includes: a substrate module 1 including a first substrate 11 and a first connector 13; a housing 2 which detachably houses the substrate module 1 and includes a back wall 23; a fan 3 installed at the housing 2; and a back plane 4 having a second substrate 41 with a major surface 41A intersecting with a first direction α, and a second connector 42 installed at the second substrate 41 and electrically connected to the first connector 13, the back plane 4 disposed within the housing 2. In the first direction α, the back plane 4 is disposed between an opening 29 and the fan 3 and spaced away from the fan 3. In a plan view along the first direction α, an overlapping portion is formed between the fan 3 and the back plane 4.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a cable television broadcast apparatus, a substrate module, and a maintenance method of the cable television broadcast apparatus.

  In a cable television station that provides cable television broadcasting, cable television broadcasting equipment (head end) that transmits signals received from terrestrial television broadcasting, communication satellites, etc. to a cable television transmission network is used. The cable television broadcasting apparatus has a structure in which a substrate module corresponding to each channel is accommodated in a housing. In cable television broadcasting, a large number of channels are provided, so a large number of substrate modules are accommodated in a housing. The electronic components included in the substrate module generate heat along with their operation. Therefore, cooling within the housing is important.

  Air cooling is mentioned as a method for cooling such an electronic device. Various structures have been proposed for appropriately cooling the inside of the housing by air cooling (see, for example, Patent Documents 1 and 2).

International Publication No. 2011/135715 International Publication No. 2007/070758

  When a large number of channels are provided, housings containing a large number of substrate modules are housed in a rack so as to be stacked. However, when a large number of cases are stacked, the ease of maintenance may be reduced or a large installation area may be required. Therefore, compactness is required for cable television broadcasting equipment.

  Therefore, it is an object of the present invention to provide a cable television broadcast apparatus and a substrate module included in the cable television broadcast apparatus capable of achieving compactness while securing appropriate cooling by air cooling. Another object of the present invention is to provide a maintenance method of cable television broadcasting equipment that facilitates maintenance of cable television broadcasting equipment.

  A cable television broadcast apparatus according to the present invention has a substrate module including a first substrate and a first connector disposed on the first substrate, and an opening, and the substrate module is oriented in a first direction from the opening. And a housing including a back wall positioned at an end opposite to the opening in the first direction, and the housing is installed in the housing. A fan for discharging the gas in the body to the outside, a second substrate having a main surface intersecting in the first direction, and a second connector provided on the second substrate and electrically connected to the first connector; And a backplane disposed within the housing. In the first direction, a backplane is disposed between the opening and the fan, spaced from the fan. In plan view along the first direction, there is an overlap between the fan and the backplane.

  A substrate module according to the present invention is a substrate module removably installed by being inserted and removed along a first direction with respect to a housing of a cable television broadcast apparatus having an opening. The substrate module is provided on a first substrate having a main surface, the first substrate installed on the first substrate, and installed on the first substrate on a first connector used for electrical connection in the interior of the housing, and external electrical connection And an external connector used for The first connector and the external connector are arranged at different positions in a first direction and a direction perpendicular to the first direction in a plane along the main surface.

  The maintenance method of cable television broadcasting equipment according to the present invention is a maintenance method of cable television broadcasting equipment including a substrate module, a housing, an external connector, and a fourth connector. The substrate module includes a first substrate and a third connector disposed on the first substrate. The housing has an opening, and the substrate module is detachably accommodated by inserting and removing the substrate module from the opening along the first direction, and the opening is the opening in the first direction. Includes a back wall located at the opposite end. The external connector is installed at the back wall and used for electrical connection with the outside. The fourth connector is disposed in the housing and electrically connected to the third connector and the external connector. The maintenance method of the cable television broadcast apparatus includes a step of electrically separating the third connector and the fourth connector, a step of separating the substrate module from the housing along the first direction, and a new substrate module. And inserting the fourth connector into the housing along the first direction from the opening and electrically connecting the fourth connector to the third connector of the new substrate module. The separating step, the separating step, the inserting step and the connecting step are performed while maintaining the state in which the external wiring connecting the external connector and the outside is connected to the external connector.

  According to the cable television broadcasting apparatus and the substrate module, compactness can be achieved while securing appropriate cooling by air cooling. According to the maintenance method of the cable television broadcasting equipment, the maintenance work of the cable television broadcasting equipment becomes easy.

FIG. 2 is a schematic perspective view showing the structure of a cable television broadcast apparatus in the first embodiment. FIG. 2 is a schematic perspective view showing the structure of a cable television broadcast apparatus in the first embodiment. FIG. 2 is a schematic perspective view showing the internal structure of the cable television broadcast apparatus in the first embodiment. It is a schematic sectional drawing in alignment with line segment IV-IV of FIG. FIG. 10 is a schematic perspective view showing the structure of a cable television broadcast apparatus in the second embodiment. FIG. 10 is a schematic perspective view showing the structure of a cable television broadcast apparatus in the second embodiment. FIG. 16 is a schematic perspective view showing the internal structure of a cable television broadcast apparatus in the second embodiment. It is a schematic sectional drawing in alignment with line segment VIII-VIII of FIG. It is a flowchart which shows the outline | summary procedure of the maintenance method of a cable television broadcasting apparatus.

Description of an embodiment of the present invention
First, embodiments of the present invention will be listed and described. The cable television broadcast apparatus of the present application has a substrate module including a first substrate and a first connector provided on the first substrate, and an opening, and the substrate module is arranged along the first direction from the opening. A housing including a back wall which accommodates the substrate module in a removable manner by being inserted and removed and which is detachably located at an end opposite to the opening in the first direction; A second substrate having a main surface intersecting with the first direction, and a second connector disposed on the second substrate and electrically connected to the first connector; And a backplane disposed within the housing. In the first direction, a backplane is disposed between the opening and the fan, spaced from the fan. In plan view along the first direction, there is an overlap between the fan and the backplane.

  In the cable television broadcast apparatus of the present application, the fan and the backplane overlap in a plan view along the first direction. Therefore, the projection area of the cable television broadcast apparatus can be reduced in plan view along the first direction. As a result, it is possible to achieve compactness of cable television broadcasting equipment. Further, in the cable television broadcast apparatus of the present application, in the first direction, the backplane that obstructs the air flow is disposed at an interval from the fan. Thus, the gas (air) flowing into the casing from the opening side bypasses the backplane, flows into the fan, and is discharged to the outside. Therefore, appropriate cooling by air cooling can be ensured. As described above, according to the cable television broadcast apparatus of the present invention, compactness can be achieved while securing appropriate cooling by air cooling.

  In the cable television broadcasting apparatus, a backplane may be disposed between the first connector and the fan. By doing so, the structure of the cable television broadcast apparatus can be easily achieved.

  In the cable television broadcast apparatus, the fan may be installed at the back wall. By doing so, it becomes easy to properly discharge the gas in the housing to the outside.

  In the cable television broadcast apparatus, the back wall may be formed with a ventilation hole which is a through hole penetrating the back wall in the thickness direction. The fan may be installed at a position corresponding to the vent holes on the outer wall surface of the back wall. As described above, by adopting the structure in which the fan is installed on the outer wall of the housing, the assembly of the cable television broadcast apparatus becomes easy.

  In the above-described cable television broadcast apparatus, an insertion hole may be formed in the back wall, which is a through hole penetrating the back wall in the thickness direction. The substrate module may further include an external connector used for electrical connection with the outside. The external connector may penetrate through the insertion hole and protrude to the outside of the housing. Thus, the number of parts can be reduced by adopting a structure in which the external connector included in the substrate module protrudes to the outside of the housing.

  In the cable television broadcast apparatus, the substrate module may further include a third connector installed on the first substrate. The cable television broadcasting device is installed at the back wall and is an external connector used for electrical connection with the outside, and a fourth connector disposed in the housing and electrically connected to the third connector and the external connector. May be further provided. As described above, by adopting the structure in which the external connector is installed in the housing, for example, in the case where maintenance work for replacing the substrate module is required, the wiring between the external connector and the outside is maintained, The substrate module can be detached from the housing. As a result, it becomes unnecessary to attach and remove the wiring between the external connector and the outside at the time of maintenance work, and the maintenance work becomes easy. When the fourth connector and the external connector are electrically connected, the fourth connector and the external connector are a single integrated connector, more specifically, for example, a single connector. That is, the state in which the connection ports are disposed at both ends in the flow direction of the electricity is included.

  The substrate module of the present application is a substrate module which is detachably installed by being inserted and removed along a first direction with respect to a housing of a cable television broadcast apparatus having an opening. The substrate module is provided on a first substrate having a main surface, the first substrate installed on the first substrate, and installed on the first substrate on a first connector used for electrical connection in the interior of the housing, and external electrical connection And an external connector used for The first connector and the external connector are arranged at different positions in a first direction and a direction perpendicular to the first direction in a plane along the main surface.

  In the substrate module of the present application, the first connector and the external connector, which have a large volume and obstruct the air flow, are different in the first direction and the direction perpendicular to the first direction in the plane along the main surface of the first substrate. Placed in position. This makes it easy to secure a sufficient gas flow path between the first connector and the external connector without enlarging the first substrate more than necessary. As a result, according to the substrate module of the present application, compactness can be achieved while securing appropriate cooling of the cable television broadcast equipment by air cooling.

  In the substrate module, the first substrate may include a first region whose length along the first direction is shorter than other regions. In the first direction, the first connector is disposed at the end of the first region opposite to the end on the opening side, and the external connector is the end on the opening side It may be disposed at the end of the other area opposite to the part. By thus installing the first connector and the external connector at the end of the substrate, connection between these connectors and other components is facilitated.

  The maintenance method of cable television broadcasting equipment of the present application is a maintenance method of cable television broadcasting equipment including a substrate module, a housing, an external connector, and a fourth connector. The substrate module includes a first substrate and a third connector disposed on the first substrate. The housing has an opening, and the substrate module is detachably accommodated by inserting and removing the substrate module from the opening along the first direction, and the opening is the opening in the first direction. Includes a back wall located at the opposite end. The external connector is installed at the back wall and used for electrical connection with the outside. The fourth connector is disposed in the housing and electrically connected to the third connector and the external connector. The maintenance method of the cable television broadcast apparatus includes a step of electrically separating the third connector and the fourth connector, a step of separating the substrate module from the housing along the first direction, and a new substrate module. And inserting the fourth connector into the housing along the first direction from the opening and electrically connecting the fourth connector to the third connector of the new substrate module. The separating step, the separating step, the inserting step and the connecting step are performed while maintaining the state in which the external wiring connecting the external connector and the outside is connected to the external connector.

  In the maintenance method of cable television broadcasting equipment of the present application, after electrically separating the third connector and the fourth connector, the substrate module is detached from the housing. Thereafter, a new substrate module, ie, a replacement substrate module or a repaired substrate module, is inserted into the housing, and the fourth connector is connected to the third connector of the new substrate module. And a series of these procedures are implemented, maintaining the state where the external wiring which connects an external connector and the exterior was connected to an external connector. As a result, it becomes unnecessary to attach and remove the wiring between the external connector and the outside in the maintenance operation, and the maintenance operation can be easily performed.

[Details of the Embodiment of the Present Invention]
Next, embodiments of a cable television broadcast apparatus, a substrate module and a cable television broadcast apparatus maintenance method according to the present invention will be described with reference to the drawings. In the following drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated.

Embodiment 1
First, a cable television broadcast apparatus and a substrate module according to the first embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a schematic perspective view showing the structure of a cable television broadcast apparatus according to Embodiment 1 as viewed from the front upper right. FIG. 2 is a schematic perspective view showing the structure of a cable television broadcast apparatus according to Embodiment 1 as viewed from the rear upper left side. FIG. 3 is a schematic perspective view showing a state in which one of the substrate modules is inserted into the housing with the upper wall of the housing removed to show the internal structure of the housing and the structure of the substrate module. . FIG. 4 is a schematic cross-sectional view (a schematic cross-sectional view in the YZ plane) taken along line segment IV-IV of FIG.

  Referring to FIGS. 1 to 4, cable television broadcasting apparatus 100 according to the present embodiment is a cable television broadcasting apparatus that transmits signals received from terrestrial television broadcasting, communication satellites, etc. in a cable television station to a cable television transmission network (see FIG. Head end). The cable television broadcast apparatus 100 has a structure in which a plurality of substrate modules 1 corresponding to each channel are accommodated in a housing 2. The cable television broadcast apparatus 100 includes a substrate module 1, a housing 2, a fan 3, and a backplane 4.

  As shown in FIGS. 3 and 4, the substrate module 1 includes a first substrate 11 having a flat plate shape, a plurality of electronic components 12 disposed on one major surface 11A of the first substrate 11, and The connector 13 and the external connector 14 are included. The first substrate 11 is a printed circuit board. A circuit (not shown) made of a conductor such as copper is formed on one main surface 11A of the first substrate 11 and on the other main surface and inside. Then, on the main surface 11A, for example, a processor, a memory, an electrolytic capacitor, an IC (Integrated Circuit), an LSI (Large-Scale Integrated circuit), etc. are relatively large volumes so as to be electrically connected to this circuit A plurality of electronic components 12 are arranged. On the other hand, on the other main surface opposite to main surface 11A, a plurality of relatively small electronic components such as a chip capacitor and a chip resistor are arranged to be electrically connected to the circuit. ing. The first connector 13 is disposed on the major surface 11A so as to be electrically connected to the circuit. The first connector 13 is used for electrical connection inside the housing 2. More specifically, the first connector 13 is used, for example, for power supply, transmission and reception of signals with other substrate modules, and the like. The external connector 14 is disposed on the main surface 11A so as to be electrically connected to the circuit. The external connector 14 is used for electrical connection with the outside. The external connector 14 is, for example, a BNC connector, an F-type connector, or the like.

  The first connector 13 and the external connector 14 are disposed at different positions in a plane along the main surface 11A in a direction (Z-axis direction) perpendicular to the first direction α (Y-axis direction) and the first direction α. ing. More specifically, the first substrate 11 includes a first area 11B whose length along the first direction α (length in the Y-axis direction) is shorter than other areas. In the first direction α, the first connector 13 is disposed at the end of the first region 11B on the opposite side to the end on the opening 29 side. The external connector 14 is disposed at an end portion of the region other than the first region 11B on the opposite side to the end portion on the opening 29 side.

  Referring to FIGS. 1 and 3, substrate module 1 further includes a protection plate 16 and a handle 16A. The protection plate 16 has a rectangular flat plate shape. The protection plate 16 is connected to the outer peripheral surface of the first substrate 11 such that the main surface intersects (orthogonalizes) the plane including the one main surface 11A of the first substrate 11. The handle 16 </ b> A is disposed on the main surface of the protection plate 16 opposite to the side connected to the first substrate 11. When pulling out the substrate module 1 from the housing 2, the operator can hold the handle 16 </ b> A.

  The housing 2 has a shape in which a wall corresponding to one surface of a rectangular box is removed. That is, the housing 2 has a rectangular box shape having the opening 29. The housing 2 detachably accommodates the plurality of substrate modules 1 by inserting and removing the substrate modules 1 from the opening 29 along the first direction α (Y-axis direction). The housing 2 includes an upper wall 21, a bottom wall 22, a back wall 23, and a pair of side walls 24. When the cable television broadcast apparatus 100 is installed (stored in a rack), the XY plane in FIGS. 1 to 4 coincides with the horizontal plane. The Z-axis direction coincides with the vertical direction. The top wall 21 and the bottom wall 22 face each other across the internal space of the housing 2. The pair of side walls 24 oppose each other across the internal space of the housing 2. The back wall 23 is located at an end opposite to the opening 29 in the first direction α. The substrate module 1 is housed in the housing 2 such that the main surface 11A is along the YZ plane. The substrate module 1 is housed in the housing 2 such that the main surface 11A intersects the plane along the inner wall surfaces of the top wall 21 and the bottom wall 22 (so that it intersects at right angles). The top wall 21 and the bottom wall 22 do not have through holes for introducing a cooling gas (air).

  The fan 3 is installed in the housing 2 and discharges the gas in the housing 2 to the outside. The fan 3 is installed in the back wall 23. More specifically, referring to FIG. 4, fan 3 includes a main body 32 that forms an air flow by rotating around a central axis, and a case 31 that accommodates main body 32. The back wall 23 is formed with a ventilation hole 23B which is a through hole penetrating the back wall 23 in the thickness direction. The fan 3 is installed at a position corresponding to the vent holes 23B of the outer wall surface of the back wall 23.

  3 and 4, the back plane 4 is disposed on the second substrate 41 having the main surface 41A intersecting (orthogonal to) the first direction α, and on the main surface 41A of the second substrate 41. And a second connector 42 electrically connected to the first connector 13. The main surface 41A is orthogonal to the Y-axis direction and parallel to the XZ plane. The second substrate 41 is disposed in the housing 2 so as to extend from one side wall 24 to the other side wall 24. The second connectors 42 are arranged on the second substrate 41 by the number corresponding to the number of the substrate modules 1 that can be accommodated in the housing 2.

  The backplane 4 is disposed between the opening 29 and the fan 3 in the first direction α. The backplane 4 is spaced apart from the fan 3 in the first direction α. That is, there is a space between the backplane 4 and the fan 3. The backplane 4 is disposed between the first connector 13 and the fan 3. In plan view along the first direction α, the fan 3 and the back plane 4 overlap. In the present embodiment, the back of the fan 3 in the Z-axis direction (the direction perpendicular to the first direction α in the plane along the main surface 11A) is back in plan view along the first direction α. The width of the plane 4 in the Z-axis direction is included.

  Referring to FIG. 4, in the back wall 23 of the housing 2, an insertion hole 23 </ b> A which is a through hole penetrating the back wall 23 in the thickness direction is formed. The external connector 14 on the first substrate 11 penetrates the insertion hole 23A and protrudes to the outside of the housing 2. An external wire 91 for connecting the external connector 14 to the outside is connected to the external connector 14.

  In the cable television broadcast apparatus 100 of the present embodiment, the fan 3 and the back plane 4 overlap in a plan view along the first direction α. Therefore, the projection area of the cable television broadcast apparatus 100 in a plan view along the first direction α is reduced. More specifically, in the cable television broadcast apparatus 100 of the present embodiment, the positions of the fan 3 and the backplane 4 in the height direction (Z-axis direction) of the housing 2 overlap. Therefore, the height of the housing 2 can be suppressed. As a result, downsizing of the cable television broadcast apparatus 100, more specifically, provision of the low-profile cable television broadcast apparatus 100 is realized. Further, referring to FIG. 4, in the cable television broadcast apparatus 100, in the first direction α, the backplane 4 which is an obstacle to the air flow is disposed at an interval from the fan 3. As a result, the gas (air) flowing into the housing 2 from the opening 29 side bypasses the backplane 4 along the air flow β, flows into the fan 3 and is discharged to the outside. Therefore, proper cooling by air cooling is secured. As described above, the cable television broadcast apparatus 100 is a cable television broadcast apparatus achieving compactification while securing appropriate cooling by air cooling.

  Furthermore, in the cable television broadcast apparatus 100 according to the present embodiment, the backplane 4 and the fan 3 are upper (bottom wall 22) than the center of the housing 2 in the height direction of the housing 2 (Z-axis direction). It is preferable to be disposed on the side closer to the upper wall 21). As a result, the gas (air) heated and reduced in density can be smoothly discharged to the outside by the fan 3. Although the above-mentioned composition is not an essential composition in cable television broadcasting equipment of this application, by satisfying this, more efficient cooling by air cooling can be achieved.

  Further, in the substrate module 1 of the present embodiment, the first connector 13 and the external connector 14 having a large volume and obstructing the air flow are in a plane along the main surface 11A of the first substrate 11 (in the YZ plane) (Y axis direction) and the direction (Z axis direction) perpendicular to the first direction are arranged at different positions. Thus, it is easy to secure a sufficient gas flow path (air flow β) between the first connector 13 and the external connector 14 without enlarging the first substrate 11 more than necessary. As a result, the substrate module 1 is a substrate module capable of achieving compactness while securing appropriate cooling of the cable television broadcast apparatus 100 by air cooling.

  Furthermore, between the first connector 13 on the first substrate 11 and the end of the first substrate 11 on the bottom wall 22 side, a component having a larger protrusion height from the main surface 11A than the first connector 13 is disposed It is preferable not to Thereby, a smooth air flow bypassing the backplane 4 can be secured. Although the above-mentioned composition is not an essential composition in a substrate module of this application, by satisfying this, more efficient cooling by air cooling can be achieved.

Second Embodiment
Next, Embodiment 2 which is another embodiment will be described with reference to FIGS. 5 to 8. 5, 6, 7 and 8 correspond to FIGS. 1, 2, 3 and 4 used in the description of the first embodiment, respectively.

  The cable television broadcast apparatus 100 and the substrate module 1 of the present embodiment basically have the same structure as in the case of the first embodiment, and exhibit the same effects. However, the cable television broadcast apparatus 100 according to the second embodiment is different from the case of the first embodiment in that the external connector 5 is installed on the back wall 23 of the housing 2 and the like.

  5 to 8, substrate module 1 of the second embodiment further includes a third connector 15 disposed on first substrate 11. Unlike the case of the first embodiment, the first substrate 11 of the second embodiment does not have the first region 11B whose length in the first direction α is shorter than other regions. That is, the first substrate 11 has a rectangular plate shape having a constant length in the first direction α (Y-axis direction). The third connector 15 is disposed at an end portion of the main surface 11A opposite to the end portion on the opening 29 side in the first direction α. The external connector 5 is installed on the back wall 23 of the housing 2. The external connector 5 is, for example, a BNC connector, an F-type connector, or the like. Then, the cable television broadcast apparatus 100 is disposed in the housing 2 and electrically connects the fourth connector 62 electrically connected to the third connector 15, the fourth connector 62, and the external connector 5. And one wiring 92.

  More specifically, referring to FIGS. 7 and 8, cable television broadcast apparatus 100 further includes a sub-backplane 6 disposed in housing 2. The sub backplane 6 is disposed on the major surface 61A of the third substrate 61 with the major surface 61A intersecting (orthogonal to) the first direction α, and is electrically connected to the third connector 15 And a fourth connector 62. The main surface 61A is orthogonal to the Y-axis direction and parallel to the XZ plane. The third substrate 61 is disposed in the housing 2 so as to extend from one side wall 24 to the other side wall 24. The fourth connectors 62 are arranged on the third substrate 61 by the number corresponding to the number of the substrate modules 1 that can be accommodated in the housing 2.

  In the cable television broadcast apparatus 100 of the present embodiment, the external connector 5 is installed in a housing. Therefore, for example, when the maintenance work for replacing the substrate module 1 is required, the substrate module 1 can be detached from the housing 2 while maintaining the state in which the external wiring 91 is connected to the external connector 5. As a result, it becomes unnecessary to attach and detach the external wiring 91 at the time of maintenance work, and the maintenance work becomes easy. Specific procedures for maintenance work will be described in a third embodiment described later.

Third Embodiment
Next, an embodiment of a method of maintaining a cable television broadcast apparatus of the present invention will be described. In the maintenance method of the present embodiment, the maintenance method of the cable television broadcast apparatus 100 of the second embodiment will be described as an example.

  Referring to FIG. 9, in the method of maintaining a cable television broadcast apparatus according to the present embodiment, first, the output from the external connector is cut off (step (S10)). Specifically, referring to FIG. 8, the output from external connector 5 to the outside through external wiring 91 is cut off. At this time, referring to FIG. 1, the function of the substrate module 1 to be subjected to the maintenance operation is substituted by a substrate module 1 other than the substrate module 1 to be subjected to the maintenance operation among the plurality of substrate modules 1. By interrupting the output from the external connector 5 to the outside, interruption of the broadcast can be avoided. This operation can be performed, for example, by operating an externally installed control module (not shown).

  Next, referring to FIGS. 9 and 8, the third connector 15 and the fourth connector 62 are electrically separated (step (S20)). Specifically, referring to FIG. 8, while holding the handle 16A, the operator pulls the substrate module 1 away from the back wall 23 along the first direction α. Thereby, the third connector 15 and the fourth connector 62 are separated, and the first connector 13 and the second connector 42 are separated. At this time, the state where the fourth connector 62 and the external connector 5 are connected by the first wiring 92 is maintained.

  Next, the substrate module 1 is detached from the housing 2 along the first direction α (step (S30)). If the extracted substrate module 1 can be reused by carrying out cleaning or the like, the cleaning or the like is carried out. Further, if the taken out substrate module 1 can be reused by repairing it, the repair is carried out. On the other hand, when the substrate module 1 is not reused, a substitute is prepared.

  Next, a new substrate module 1 is inserted into the housing 2 along the first direction α from the opening 29 (step (S40)). Here, the new substrate module 1 to be inserted may be one that has been subjected to cleaning etc. or repair after being taken out in the step (S30), or may be a substitute.

  Next, the fourth connector 62 and the third connector 15 of the new substrate module 1 are electrically connected (step (S50)). Specifically, referring to FIG. 8, the substrate module 1 is pushed toward the back wall 23 along the first direction α. Thus, the third connector 15 and the fourth connector 62 are connected, and the first connector 13 and the second connector 42 are connected.

  Referring to FIGS. 9 and 8, next, the interruption of the output from external connector 5 is released (step (S60)). Specifically, referring to FIG. 8, the blocking of the output from external connector 5 to the outside through external wiring 91 is released. At this time, referring to FIG. 1, when the substrate module 1 other than the substrate module 1 to be subjected to the maintenance operation among the plurality of substrate modules 1 is in a state to substitute the function of the substrate module 1 to be the object of the maintenance operation. , And with the cancellation of the above-mentioned blocking, stop the substitution. By the above procedure, the maintenance method of the cable television broadcast apparatus of the present embodiment is completed.

  In the maintenance method of the cable television broadcast apparatus 100 of the present embodiment, the board module 1 is separated after the output from the external connector 5 is cut off and the third connector 15 and the fourth connector 62 are electrically separated. Detach from case 2. Thereafter, a new substrate module 1 is inserted into the housing 2 and the fourth connector 62 and the third connector 15 of the new substrate module 1 are connected, and then the interruption of the output from the external connector 5 is released. Then, during these operations, the state in which the external wiring 91 is connected to the external connector 5 is maintained. As a result, it becomes unnecessary to attach and detach the external wiring 91 at the time of maintenance work, and the maintenance work can be easily performed.

  It should be understood that the embodiments disclosed herein are illustrative in all respects and not restrictive in any respect. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The cable television broadcast apparatus and the substrate module of the present application can be applied particularly advantageously to cable television broadcast apparatus and substrate modules that are required to achieve compactness while ensuring appropriate cooling by air cooling. The maintenance method of cable television broadcasting equipment of the present application can be applied particularly advantageously to maintenance work of cable television broadcasting equipment that requires simplification.

REFERENCE SIGNS LIST 1 board module 2 housing 3 fan 4 back plane 5 external connector 6 sub back plane 11 first board 11 A main surface 11 B first area 12 electronic component 13 first connector 14 external connector 15 third connector 16 protection plate 16 A handle 21 Wall 22 bottom wall 23 back wall 23A insertion hole 23B ventilation hole 24 side wall 29 opening 31 case 32 main body 41 second substrate 41A main surface 42 second connector 61 third substrate 61A main surface 62 fourth connector 91 external wiring 92 first Wiring 100 cable TV broadcasting equipment

Claims (9)

A substrate module including a first substrate and a first connector disposed on the first substrate;
It has an opening, and the substrate module is detachably accommodated by inserting and removing the substrate module from the opening along a first direction, and the side opposite to the opening in the first direction A housing including a back wall located at an end of the housing;
A fan installed in the housing and discharging gas in the housing to the outside;
A second substrate having a main surface intersecting the first direction, and a second connector disposed on the second substrate and electrically connected to the first connector, and disposed in the housing And a backplane that
In the first direction, the backplane is disposed between the opening and the fan at a distance from the fan;
A cable television broadcast apparatus in which the fan and the backplane overlap in a plan view along the first direction.   The cable television broadcast apparatus according to claim 1, wherein the backplane is disposed between the first connector and the fan.   The cable television broadcast apparatus according to claim 1, wherein the fan is installed in the back wall. The back wall is formed with a ventilation hole which is a through hole penetrating the back wall in the thickness direction,
The cable television broadcast apparatus according to claim 3, wherein the fan is installed at a position corresponding to the vent hole on the outer wall surface of the back wall. An insertion hole, which is a through hole penetrating the back wall in the thickness direction, is formed in the back wall,
The substrate module further includes an external connector used for external electrical connection,
The cable television broadcast apparatus according to any one of claims 1 to 4, wherein the external connector penetrates the insertion hole and protrudes to the outside of the housing. The substrate module further includes a third connector installed on the first substrate,
The cable television broadcasting device
An external connector installed on the back wall and used for electrical connection with the outside;
The cable television broadcast apparatus according to any one of claims 1 to 4, further comprising a fourth connector disposed in the housing and electrically connected to the third connector and the external connector. . A substrate module detachably installed by inserting and removing along a first direction with respect to a housing of a cable television broadcast apparatus having an opening,
A first substrate having a main surface;
A first connector disposed on the first substrate and used for electrical connection inside the housing;
An external connector disposed on the first substrate and used for electrical connection to the outside;
A substrate module, wherein the first connector and the external connector are arranged at different positions in a direction perpendicular to the first direction and the first direction in a plane along the main surface. The first substrate includes a first region whose length along the first direction is shorter than other regions,
In the first direction,
The first connector is disposed at an end of the first region opposite to the end on the side closer to the opening,
The substrate module according to claim 7, wherein the external connector is disposed at an end of the other area opposite to the end on the opening side. A substrate module including a first substrate and a third connector disposed on the first substrate;
It has an opening, and the substrate module is detachably accommodated by inserting and removing the substrate module from the opening along a first direction, and the side opposite to the opening in the first direction A housing including a back wall located at an end of the housing;
An external connector installed on the back wall and used for electrical connection with the outside;
A maintenance method of a cable television broadcast apparatus comprising: a fourth connector disposed in the housing and electrically connected to the third connector and the external connector,
Electrically separating the third connector and the fourth connector;
Separating the substrate module from the housing along the first direction;
Inserting a new substrate module from the opening along the first direction into the housing;
Electrically connecting the fourth connector to the third connector of the new substrate module;
The cable separating step, the separating step, the inserting step and the connecting step are performed while maintaining a state in which an external wire connecting the external connector and the outside is connected to the external connector. How to maintain TV broadcasting equipment.

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