JP4764529B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus including a card holder.

  An electronic circuit device that realizes a large-scale electronic circuit by dividing an electronic circuit into a plurality of functional blocks and mounting them on a plurality of printed wiring boards and connecting a plurality of printed wiring boards corresponding to each functional block Are known.

  When connecting a plurality of printed wiring boards, there is a risk that the order of connecting the printed wiring boards is wrong and output signals collide with each other between the printed wiring boards. In order to avoid such a situation, it is possible to output an output signal only when it is determined that the connection is correctly made using the identification information of the connector that connects the printed wiring boards and the lamination position information of each board. The technique to do is disclosed (for example, refer patent document 1).

JP 2006-303167 A

  As an example of the electronic circuit device described above, there is a card holder for inserting and holding a B-CAS (BS-Conditional Access Systems) card necessary for receiving terrestrial digital broadcasting on a television or the like. In this B-CAS card holder, six printed wiring boards are connected via stacking connectors.

  In order to indicate the assembly order of a plurality of printed wiring boards, numerals indicating the order are appended on each printed wiring board. However, since the assembly work is performed artificially, it has not been possible to prevent any errors from occurring.

  An object of the present invention is to provide a broadcast receiving apparatus including a card holder that can prevent an error in the assembly order of printed wiring boards in a structure that holds a plurality of printed wiring boards.

  In order to achieve the object, a broadcast receiving apparatus according to one aspect of the present invention is opposite to a first printed wiring board, a second printed wiring board overlaid on the first printed wiring board, and the first printed wiring board. A third printed wiring board superimposed on the second printed wiring board on the side, a fourth printed wiring board superimposed on the third printed wiring board on the opposite side of the second printed wiring board, a first printed wiring board, and A first printed wiring board and a second printed circuit board including a first portion provided between at least one end of the second printed wiring board and positioned between the first printed wiring board and the second printed wiring board; Provided at the end of at least one of the first connector for electrically connecting the wiring boards, the second printed wiring board and the third printed wiring board, and between the second printed wiring board and the third printed wiring board And is located in Includes a second part having a shape different from that of the first part, electrically connecting the second printed wiring board and the third printed wiring board, a second printed wiring board, and a third printed wiring board. Including a third portion provided at at least one end of the first portion and positioned between the third printed wiring board and the fourth printed wiring board and having a shape different from the first portion and the second portion. And a third connector electrically connecting the third printed wiring board and the fourth printed wiring board.

  The broadcast receiving apparatus according to one aspect of the present invention includes a first printed wiring board, a second printed wiring board overlaid on the first printed wiring board, and a second side opposite to the first printed wiring board. A third printed wiring board overlaid on the printed wiring board, a fourth printed wiring board overlaid on the third printed wiring board on the opposite side of the second printed wiring board, and the first printed wiring board and the second printed wiring A first connector including a first portion extending between the first printed wiring board and the second printed wiring board; and a second connector between the second printed wiring board and the third printed wiring board. A second connector that includes a second portion that extends and has a different shape from the first portion, and that electrically connects the second printed wiring board and the third printed wiring board; and a third printed wiring board and a fourth printed wiring 1st while extending between the plates It includes a third portion having a minute and a different shape from the second portion has a third connector for electrically connecting the third printed wiring board and the fourth printed circuit board, the.

  According to said structure, in the structure holding a some printed wiring board, a broadcast receiving apparatus provided with the card holder which can prevent the error of the assembly order of a printed wiring board can be provided.

The perspective view which shows the card holder which concerns on 1st Embodiment. Sectional drawing along the vertical direction of the card holder shown in FIG. The perspective view which showed the card holder shown in FIG. 1 from the rear part The perspective view which shows the base of a card holder shown in FIG. 1, and a 6th printed wiring board. The perspective view which showed the process of attaching a supporting member after attaching the 1st-5th printed wiring board to the base of the card holder shown in FIG. The perspective view which showed the next process of the attachment process of the card holder shown in FIG.

  Below, with reference to FIGS. 1-6, embodiment of the card holder 11 used for a television receiver is described. The card holder 11 is for inserting and holding a B-CAS (BS-Conditional Access Systems) card necessary for receiving and viewing terrestrial digital broadcast waves with a television receiver or the like, for example. The television receiver includes a tuner for receiving terrestrial digital broadcast waves and selecting each channel. Further, the card holder 11 is built in a recording device or the like of a television receiver, and can hold a maximum of six different types of B-CAS cards by inserting them at the same time.

  The B-CAS card stores key information for decrypting broadcast waves encrypted by the B-CAS method into a viewable form. The types of B-CAS cards are “Red Card” compatible with BS / 110 degree CS / Digital Terrestrial Digital Receiver, “Blue Card” compatible with Digital Terrestrial Receiver, and Cable TV Set Top There is an “orange card” etc. corresponding to the box. Various broadcast waves can be viewed by inserting a card suitable for the receiver into the card holder 11.

  First, the structure of the card holder 11 will be described with reference to FIG. FIG. 1 is a perspective view showing a card holder 11 according to the first embodiment.

  The card holder 11 includes a printed wiring board unit 14 including first to sixth printed wiring boards 12A to 12F, a base 15 surrounding the bottom and sides of the printed wiring board unit 14, and the printed wiring board unit 14 A guide 16 attached to the front portion and a pair of support members 17 for fixing the first to sixth printed wiring boards 12A to 12F to the base 15 are provided. The card 32 is inserted along the insertion direction S from the opening 36 of the guide 16.

  Next, the internal structure of the card holder 11 will be described with reference to FIG. FIG. 2 is a cross-sectional view along the longitudinal direction of the card holder 11 shown in FIG.

  As shown in FIG. 2, the first to sixth printed wiring boards 12 </ b> A to 12 </ b> F each include a first surface 27 that is an upper surface and a second surface 28 that is a lower surface. First to sixth card connectors 33A to 33F into which a card 32 is inserted and a plurality of circuit components 34 are mounted on the first surface 27 of the first to sixth printed wiring boards 12A to 12F, respectively. Yes. The first to sixth card connectors 33 </ b> A to 33 </ b> F have a flat and thin box shape, and open a front portion facing the guide 16. As shown in FIG. 1, the card 32 is inserted into the first to sixth card connectors 33A to 33F.

  A first stacking connector 13A is disposed between the first printed wiring board 12A and the second printed wiring board 12B, and these are electrically connected and physically fixed. Further, a second stacking connector 13B is disposed between the second printed wiring board 12B and the third printed wiring board 12C, and these are electrically connected and physically fixed. . A third stacking connector 13C is disposed between the third printed wiring board 12C and the fourth printed wiring board 12D, and these are electrically connected and physically fixed. A fourth stacking connector 13D is disposed between the fourth printed wiring board 12D and the fifth printed wiring board 12E, and these are electrically connected and physically fixed. A fifth stacking connector 13E is disposed between the fifth printed wiring board 12E and the sixth printed wiring board 12F, and these are electrically connected and physically fixed.

  That is, the lines provided in the first to sixth printed wiring boards 12A to 12F are electrically connected by the first to fifth stacking connectors 13A to 13E arranged between them.

  The number of terminals provided in the first to fifth stacking connectors 13A to 13E is different from each other.

  The line provided in the sixth printed wiring board 12F continues from the fifth to the first printed wiring boards 12E to 12A. Similarly, the lines provided in the fifth printed wiring board 12E continue from the fourth to the first printed wiring boards 12D to 12A. In this way, the lines provided in each printed wiring board continue to the printed wiring board inserted in the upper part thereof. That is, the number of lines increases in order from the sixth printed wiring board 12F to the first printed wiring board 12A. Therefore, the card holder 11 cannot function correctly unless the first to sixth printed wiring boards 12A to 12F are assembled in order.

  Next, the first to fifth stacking connectors 13A to 13E according to the present invention will be described with reference to FIG. FIG. 3 is a perspective view showing the card holder 11 shown in FIG. 1 from the rear.

  As shown in FIG. 3, the widths of the first to fifth stacking connectors 13A to 13E are defined as W1 to W5. The length decreases in order from W1 to W5, and none of the first to fifth stacking connectors 13A to 13E has the same width.

  On the second surfaces 28 of the first to fifth printed wiring boards 12A to 12E, concave connectors that are fitted to the first to fifth stacking connectors 13A to 13E are mounted. The printed wiring boards are connected by fitting the concave connectors corresponding to the first to fifth stacking connectors 13A to 13E. Therefore, it is impossible to change the order of the first to sixth printed wiring boards 12A to 12F held by the card holder 11.

  That is, the first stacking connector 13A is used only for connecting the first printed wiring board 12A and the second printed wiring board 12B. The second stacking connector 13B is used only for connecting the second printed wiring board 12B and the third printed wiring board 12C. The third stacking connector 13C is used only for connecting the third printed wiring board 12C and the fourth printed wiring board 12D. The fourth stacking connector 13D is used only for connecting the fourth printed wiring board 12D and the fifth printed wiring board 12E.

  The fifth stacking connector 13E is used only for connecting the fifth printed wiring board 12E and the sixth printed wiring board 12F. As a result, the positions of the first to sixth printed wiring boards 12A to 12F are not interchanged.

  The first to fifth stacking connectors 13A to 13E are arranged at the second position 56 in the vicinity of the outer peripheral portions of the first to sixth printed wiring boards 12A to 12F. The second position 56 is disposed at a position opposite to the first position 55 described later with respect to the central portion of the first to sixth printed wiring boards 12A to 12F. That is, by providing the first to fifth stacking connectors 13A to 13E near the outer peripheral portion instead of the central portion, it is easy to visually recognize from the outside. Accordingly, the stacking connector can be easily seen by the operator when assembling the card holder, and the workability when connecting the stacking connector is improved.

  Next, components constituting the card holder 11 will be described with reference to FIGS. First, the structure of the base 15 will be described with reference to FIG. FIG. 4 is a perspective view showing the base of the card holder shown in FIG. 1 and a sixth printed wiring board.

  As shown in FIG. 4, the base 15 is made of a metal sheet and has a “U” -shaped cross-sectional shape. The base 15 includes a bottom wall 15A, a side wall 15B that rises from a pair of opposing sides of the bottom wall 15A, and a receiving piece 18 that is provided at the upper front end of the side wall 15B. The side wall 15B has a plurality of horizontally long through holes 21 and a plurality of rectangular openings 22. The receiving piece 18 has a screw hole 18A for fixing a screw passed through a through hole 45 of the mounting portion 38 described later.

  Further, small pieces 35 as shown in FIG. 4 are bonded to the upper sides of the second to sixth card connectors 33B to F of the second to sixth printed wiring boards 12B to F, respectively. The small piece 35 is provided at a first position 55 in the vicinity of the outer peripheral portion of the first to fifth printed wiring boards 12A to 12E. The dimension obtained by adding the heights of the card connectors 33B to F and the small pieces 35 is substantially equal to the height dimension of the stacking connectors 13A to 13E. For this reason, when the first to sixth printed wiring boards 12A to 12F are stacked in a direction facing each other, the first to fifth printed wiring boards are arranged so that the positions where the stacking connectors 13A to 13E are provided are higher. It is prevented that 12A-E inclines. In addition, the small piece 35 should just be between the adjacent printed wiring boards 12, for example, may be provided in the 2nd surface of 1st-5th printed wiring boards 12A-E. In the present embodiment, since the small piece 35 is provided above the second to sixth card connectors 33B to 33F, a wide mounting space is secured on the second to fifth printed wiring boards 12B to E. ing.

  Next, the structure of the support member 17 will be described with reference to FIG. FIG. 5 is a perspective view showing a process of attaching a support member after attaching the first to fifth printed wiring boards to the base of the card holder shown in FIG.

  As shown in FIG. 5, each of the pair of support members 17 has a rectangular plate shape, and each has five holding claws 23 protruding toward the first to fifth printed wiring boards 12A to 12E. ing. Each holding claw 23 has a U-shaped cross section, and can hold the first to fifth printed wiring boards 12A to 12E sandwiched from above and below. Further, each support member 17 includes four claw portions 24 that fit into a part of the plurality of openings 22 of the side wall 15B, and three positioning members that fit into a part of the plurality of openings 22 of the side wall 15B. Each pin 25 and a hook 26 that fits into one of the plurality of openings 22 in the side wall 15B. The pair of support members 17 can be easily removed from the base 15 by lifting the hook 26 and releasing the engagement with the base 15 and then sliding the claw portion 24 in the direction in which the hook 24 is released.

  Each of the support members 17 has a bent portion 19, and the bent portion 19 abuts against the rear end portions of the first to fifth printed wiring boards 12 </ b> A to 12 </ b> E to position them. .

  Next, the structure of the guide 16 will be described with reference to FIG. FIG. 6 is a perspective view showing the next step of the card holder attaching step shown in FIG.

  As shown in FIG. 6, the guide 16 is provided separately from the first to sixth printed wiring boards 12A to 12F, and the card 32 is directed in the direction of the first to sixth card connectors 33A to 33F. You can guide to. The guide 16 is formed by integrally molding a synthetic resin. The guide 16 has a total of six rectangular open portions 36 corresponding to the first to sixth card connectors 33A to 33F. That is, the guide 16 includes a main body 37 in which the periphery of each open portion 36 is defined in a frame shape, an attachment portion 38 provided adjacent to the main body 37, a hook portion provided at an end portion on the lower side of the main body 37, The main body is in contact with the first to sixth protruding pieces 42A-F protruding from the main body 37 toward the first to sixth card connectors 33A-F and the first to fifth printed wiring boards 12A-E. First to fifth contact pieces 43 </ b> A to 43 </ b> E protruding from 37. The hook portion is hooked in a hole 44 provided in the bottom wall 15 </ b> A of the base 15. As shown in FIG. 1, the attachment portion 38 has a through hole 45 for passing a screw, and the guide 16 can be fixed to the base 15 by passing the screw through the through hole 45.

  The first to sixth projecting pieces 42A to 42F project in pairs toward the first to sixth printed wiring boards 12A to 12F, respectively. The first to sixth projecting pieces 42A to 42F are inserted into the first to sixth groove portions 31A to 31F of the first to sixth printed wiring boards 12A to 12F, respectively. A small amount protrudes upward from the first surface 27 of the printed wiring boards 12A to 12F. The projecting amounts of the first to sixth projecting pieces 42A to 42F projecting from the first surface 27 are, for example, about 0.1 mm to 0.4 mm.

  The first to sixth projecting pieces 42A to 42F can be inserted into and removed from the first to sixth groove portions 31A to 31F in the insertion direction S of the card 32. The first to sixth projecting pieces 42A to 42F are in contact with the lower surface of the card 32, and can guide the card 32 from the lower side toward the first to sixth card connectors 33A to 33F.

  The first to sixth projecting pieces 42A to 42F can position the first to sixth printed wiring boards 12A to 12F in the extending direction, that is, the horizontal direction. The first to sixth protruding pieces 42A to 42F extend in directions parallel to the first to sixth printed wiring boards 12A to 12F, respectively. The first to sixth projecting pieces 42A to 42F are arranged at positions inside the first to fifth contact pieces 43A to 43E.

  As shown in FIG. 2, the first contact piece 43 </ b> A is in contact with the first surface 27 of the first printed wiring board 12 </ b> A. The second contact piece 43B is in contact with the first surface 27 of the second printed wiring board 12B. The third contact piece 43C abuts against the first surface 27 of the third printed wiring board 12C. The fourth contact piece 43D is in contact with the first surface 27 of the fourth printed wiring board 12D. The fifth contact piece 43E is in contact with the first surface 27 of the fifth printed wiring board 12E.

  Further, as shown in FIG. 5, the first to sixth printed wiring boards 12A to 12F have first to sixth groove portions 31A to 31A to which the first to sixth projecting pieces 42A to 42F of the guide 16 are respectively inserted. F is paired. The first to sixth groove portions 31A to 31F are provided at the end portions of the printed wiring boards 12A to 12F facing the guides 16 and penetrate the printed wiring boards 12A to 12F in the thickness direction. The first to sixth groove portions 31A to 31F extend along the direction from the end face of each printed wiring board 12A to 12F toward the first to sixth card connectors 33A to 33F, that is, along the insertion direction S of the card 32. Yes.

  As shown in FIG. 4, the first to sixth groove portions 31 </ b> A to 31 </ b> F each have a near end portion 39 at the position of the end facing the guide 16. The near end portion 39 forms a tapered surface that expands toward the main body 37 of the guide 16. The near end portion 39 can smoothly guide insertion of first to sixth projecting pieces 42A to 42F described later into the first to sixth groove portions 31A to 31F.

  Subsequently, the assembly process of the card holder 11 of the present embodiment will be described with reference to FIGS. As shown in FIG. 4, first, the sixth printed wiring board 12F is fixed to the bottom wall 15A of the base 15 with screws 48 or the like. Next, the fifth printed wiring board 12E is fixed to the sixth printed wiring board 12F using the fifth stacking connector 13E. Next, the fourth printed wiring board 12D is fixed to the fifth printed wiring board 12E using the fourth stacking connector 13D. Further, the third printed wiring board 12C is fixed to the fourth printed wiring board 12D using the third stacking connector 13C. Further, the second printed wiring board 12B is fixed to the third printed wiring board 12C using the second stacking connector 13B. Then, using the first stacking connector 13A, the first printed wiring board 12A is fixed to the second printed wiring board 12B. In this state, the first to sixth printed wiring boards 12A to 12F are temporarily fixed by the stacking connectors 13A to 13E.

  In the present embodiment, the stacking connectors 13A to 13E are provided so that the widths W1 to W5 become shorter in order. Therefore, since the first to sixth printed wiring boards 12A to 12F that can use the stacking connectors 13A to 13E are determined as a pair, the order cannot be changed.

  Then, the first support member 17 is attached to one side wall 15B of the base 15 and the first to sixth printed wiring boards 12A to 12F. Subsequently, the second support member 17 is attached to the other side wall 15B of the base 15 and the first to sixth printed wiring boards 12A to 12F. As shown in FIG. 5, the mounting of these support members 17 is performed by first bringing the support members 17 close to each other in the direction D1 approaching the side wall 15B of the base 15 and passing the holding claws 23 through the through holes 21. The pin 25 and the hook 26 are passed through the openings 22 respectively. Subsequently, the support member 17 is moved along the direction D <b> 2 toward the front, and each claw portion 24 is hooked on an edge portion around the through hole 21. As a result, the hook 26 falls to the inside of the through hole 21 and is locked. The first to sixth printed wiring boards 12A to 12F are held from both sides by the holding claws 23 of the support member 17, respectively.

  6, the guide 16 is moved along the insertion direction S of the card 32, and the guide 16 is fixed to the base 15 and the first to sixth printed wiring boards 12A to 12F.

  At this time, the first to sixth protruding pieces 42A to 42F of the guide 16 enter inside the first to sixth groove portions 31A to 31F of the first to sixth printed wiring boards 12A to 12F, respectively. The first to fifth contact pieces 43A to 43E of the guide 16 are in contact with the first surfaces 27 of the first to fifth printed wiring boards 12A to 12E, respectively. Further, the positioning rib 47 protruding from the side wall 15B of the base 15 is inserted into the fixing hole 46 provided in the mounting portion 38 of the guide 16, and the state shown in FIG. In the state shown in FIG. 1, the hook portion is fitted inside the hole portion 44 and is locked. In this state, the screw is fixed to the through hole 45 of the attachment portion 38 and the screw hole 18A of the receiving piece 18, and the assembling process of the card holder 11 is completed.

  According to the card holder 11 according to the present embodiment configured as described above, the first to fifth stacking connectors 13A to 13E are inserted into the card holder 11 by making the widths W1 to W5 different. An error in the assembly order of the first to sixth printed wiring boards 12A to 12F can be prevented.

  That is, the first to sixth printed wiring boards 12A to 12F on which the first to sixth card connectors 33A to 33F for inserting the card 32 are mounted can be correctly arranged. Therefore, in the card holder 11 into which a plurality of types of cards 32 are inserted, the first to sixth card connectors 33A to 33F corresponding to the respective cards 32 are correctly arranged, and the reliability in manufacturing the card holder is improved.

  In addition, since only the shape is changed without changing the installation positions of the first to fifth stacking connectors 13A to 13E, the arrangement space for the first to fifth stacking connectors 13A to 13E is newly provided on the printed wiring board. It is not necessary to provide it. Accordingly, it is possible to more easily prevent an error in the assembly order of the first to sixth printed wiring boards 12A to 12F without increasing the size of the card holder.

  Further, the first to fifth stacking connectors 13A to 13E are arranged at the second position 56 in the vicinity of the outer peripheral portions of the first to sixth printed wiring boards 12A to 12F, so that the first to fifth stacking connectors are arranged. The connectors 13A to 13E are easy to see. Therefore, the connection is facilitated and the working efficiency is improved, and the assembly can be performed while confirming the change in the widths W1 to W5 of the first to fifth stacking connectors 13A to 13E.

  In the present embodiment, the structure in which the widths W1 to W5 are sequentially shortened from the first stacking connector 13A to the fifth stacking connector 13E has been described. However, the present invention is not limited to this. That is, it is only necessary that the first to fifth stacking connectors 13A to 13E have different shapes and can determine a pair of printed wiring boards that can be connected. From the viewpoint of work efficiency during assembly, in order to make the assembly order of the first to sixth printed wiring boards 12A to 12F easy to understand, the shapes of the first to fifth stacking connectors 13A to 13E are sequentially changed. Is more desirable. Also, numbers indicating the assembly order may be added to the surfaces of the first to sixth printed wiring boards 12A to 12F to further suppress errors in the assembly order.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

11 Card holders 12A to F First to sixth printed wiring boards 13A to E First to fifth stacking connectors 14 Printed wiring board unit 15 Base 15A Bottom wall 15B Side wall 16 Guide 17 Support member 18 Receiving piece 18A Screw hole 19 Bending portion 21 Through hole 22 Opening portion 23 Holding claw 24 Claw portion 25 Pin 26 Hook 27 First surface 28 Second surface 31A to F First to sixth groove portions 32 Cards 33A to F First to sixth cards Connector 34 Circuit component 35 Small piece 36 Opening portion 37 Main body 38 Mounting portion 39 Near end portions 42A to F First to sixth projecting pieces 43A to E First to fifth contact pieces 44 Hole portion 45 Through hole 46 Fixing hole 47 Rib 48 Screw S Insertion direction

Claims (5)

A first printed wiring board;
A second printed wiring board overlaid on the first printed wiring board;
A third printed wiring board superimposed on the second printed wiring board on the side opposite to the first printed wiring board;
A fourth printed wiring board overlaid on the third printed wiring board on the side opposite to the second printed wiring board;
A first connector including a first side surface extending between the first printed wiring board and the second printed wiring board, and electrically connecting the first printed wiring board and the second printed wiring board;
Includes a second side surface having a shape different from the first side surface extends between said third printed circuit board and the second printed circuit board, said third printed circuit board and the second printed circuit board A second connector for electrical connection;
It includes a third side having a shape different from the first side surface and the second side surface extends between the fourth printed wiring board and the third printed wiring board, the said third printed circuit board first 3rd connector which electrically connected 4 printed wiring boards,
A broadcast receiving apparatus. The first to third connectors are broadcast receiving apparatus according to claim 1, toward the third connector from said first connector, turn and which are located so that the width of the side becomes wider. The first to fourth printed wiring boards each have a card connector for attaching and detaching a card,
It broadcast receiving apparatus according to claim 1 or 2 kinds of cards to be removably attached to the card connector are different from each other for each of the card connector. 4. The broadcast receiving apparatus according to claim 3 , wherein the card has key information for decrypting broadcast waves. The broadcast receiving apparatus according to claim 4 , further comprising a tuner that receives the broadcast wave.

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