JP5524515B2 - Blocking structure of component mounting opening - Google Patents

Description

  The present invention relates to a closing structure for a component mounting opening in an electronic device.

  Notification broadcasting systems for performing various types of notification broadcasting from a center to a plurality of dwelling units are widespread. This notification broadcasting system is generally configured by connecting a center device arranged on the center side and a receiver installed in each dwelling unit via a transmission line such as CATV. Then, when performing general broadcasts such as holding local events or emergency broadcasts in the event of a fire or earthquake, the center device transmits a notification broadcast signal via a transmission line, and the receiver receives the notification broadcast signal. Then, the announcement broadcast is output by voice through a speaker (see, for example, Patent Document 1).

  As such a receiver, a receiver capable of receiving and outputting FM radio has been proposed in addition to the general broadcast and emergency broadcast described above. Such a receiver is provided with an antenna for FM radio wave reception.

Japanese Patent Laid-Open No. 9-8753

  Here, since it is not necessary to attach an antenna to the housing of a receiver that does not have an FM radio reception function, it is not necessary to provide a component mounting port for attaching the antenna to the housing. On the other hand, since it is necessary to attach an antenna to the housing of the receiver having the FM radio reception function, it is necessary to provide a component attachment port for attaching the antenna to the housing.

  Thus, since there is a structural difference between the two cases, it may be considered to manufacture these cases completely individually. However, since this difference is a small difference, the manufacturing cost is reduced by using a common housing, and when the FM radio reception function is not provided, the component mounting port is blocked by a blocking component. It is conceivable to respond by doing. However, when the closed part is simply manufactured separately from the housing and attached, a new problem arises that it takes time to manufacture and manage the closed part.

  The present invention has been made in view of the above, and increases the labor of manufacturing and management in eliminating the structural difference that occurs in the housing of an electronic device depending on the presence or absence of a component such as an antenna. An object of the present invention is to provide a component attachment port closing structure that can prevent the above-described problem.

In order to solve the above-described problems and achieve the object, the component attachment port closing structure according to claim 1 is a component attachment port formed in a housing of a receiver that receives a signal , wherein the signal In a closing structure for closing a component mounting port for mounting an antenna for receiving the antenna when it is not necessary to mount the antenna, a blocking portion for closing the component mounting port is a member different from the housing. the a opening formed in the attached member fixed with the casing, only capable set removably in an opening formed in the position where the non-exposed shape upon fixing the receiver to the installation surface, the In the state where the blocking portion is removed from the opening of the attachment member, the opening is not exposed from the outside by fixing the receiver together with the attachment member while keeping the opening in the open state. State It is possible.

The component attachment port closing structure according to claim 2 is the component attachment port closing structure according to claim 1, wherein the attachment member is fixed to a back surface of the receiver, whereby the receiver is In order to fix the receiver in a standing state with respect to the installation surface by being fixed along the installation surface or fixed to the bottom surface of the receiver, A fixing plate that can be selectively fixed to the bottom surface of the receiver, and in any state where the fixing plate is fixed to the back surface of the receiver or the bottom surface of the receiver, the blocking portion is connected to the receiver. It was detachably provided at a position where it was not exposed when fixed to the installation surface .

The component attachment port closing structure according to claim 3 is the component attachment port closing structure according to claim 1 or 2 , wherein the attachment member is provided with the closing portion so as to face the housing. The closing portion is arranged so that the side surface of the closing portion is non-projecting toward the housing side than the side surface of the accessory member that contacts the side surface of the housing.

The component attachment port closing structure according to claim 4 is the component attachment port closing structure according to any one of claims 1 to 3 , wherein the attachment member is provided with the closing portion. The blocking portion is arranged such that a side surface of the blocking portion facing the surface is non-projecting toward the installation surface side than a side surface of the attachment member that contacts the installation surface.

According to the closing structure of the component attachment port according to claim 1, by providing the closing portion on the attachment member, the closing portion can be manufactured or managed together with the attachment member. Can be omitted. In particular, by forming the closing part integrally with the fixed plate, the manufacturing of the closing part becomes easy, and the manufacturing cost of the closing part can be reduced. Moreover, even if it is unnecessary to remove the blocking part by disposing the blocking part at a position where the receiver is not exposed when the receiver is fixed to the installation surface, the blocking part can be used by the user. It is possible to make the receiver inconspicuous, or when removing the blockage, it is possible to make the removed part inconspicuous from the user's perspective. Can be maintained.

According to the closing structure of the component attachment port according to claim 3 , when the closing portion is provided in the attachment member, the side surface of the closing portion that faces the housing comes from the side surface of the attachment member that contacts the side surface of the housing. Since the closed portion does not hinder the contact between the housing and the accessory member, the housing and the accessory member can be stably provided even when the removal of the closed portion is unnecessary. Can be fixed.

According to the closing structure of the component attachment port according to claim 4 , when the attachment member is provided with the closing portion, the side surface of the closing portion facing the installation surface is installed more than the side surface of the attachment member contacting the installation surface. Since it is non-projecting on the surface side, the blocking part does not hinder the contact between the installation surface and the attached member, so even if it is not necessary to remove the blocking part, the installation surface and the attached member are stably fixed. can do.

It is a perspective view which shows the receiver fixed to the installation wall. It is a figure which shows a receiver, (a) is a front view, (b) is a rear view, (c) is a bottom view. It is a figure which shows a fixed board, (a) is a front view, (b) is a right view, (c) is AA arrow sectional drawing of (a), (d) is a bottom view, (e) is a figure. (A) BB arrow sectional drawing, (f) is a rear view. It is a figure which shows a receiver with a fixed board, (a) is a rear view, (b) is a right view, (c) is a top view. It is a perspective view of the receiver fixed in the upright state. It is a figure which shows the receiver fixed by the upright state with a fixed board, (a) is a front view, (b) is a right view. It is a figure which shows a front cover, (a) is a rear view, (b) is a left view. It is a figure which shows a back cover, (a) is a front view, (b) is a left view. It is an enlarged view of a component attachment port, (a) is a perspective view, (b) is AA arrow sectional drawing of (a). It is a figure which shows an obstruction | occlusion piece, (a) is a perspective view, (b) is a longitudinal cross-sectional view, (c) is a cross-sectional view. It is a figure which shows a component attachment port periphery, (a) is a perspective view before attaching a closure piece to a component attachment port, (b) is a perspective view after attaching a closure piece to a component attachment port.

  Embodiments of a component attachment port closing structure according to the present invention will be described below in detail with reference to the accompanying drawings. First, the overall configuration of the electronic device will be described, then the component attachment port closing structure will be described, and finally, a modification to the present embodiment will be described. However, the present invention is not limited by this embodiment. In this embodiment, as an electronic device, a receiver that receives a notification broadcast signal transmitted from the center device of the notification broadcast system in a dwelling unit and outputs the notification broadcast will be described.

(Configuration-Receiver)
First, the basic configuration of the receiver will be described. FIG. 1 is a perspective view showing a receiver fixed to the installation wall W. FIG. 2A and 2B are diagrams showing a receiver, where FIG. 2A is a front view, FIG. 2B is a rear view, and FIG. 2C is a bottom view. As shown in FIG. 1 and FIGS. 2A to 2C, the receiver 1 is configured by housing a circuit board on which various electronic components and the like (not shown) are mounted inside a housing 3. The housing 3 is configured by combining a front cover 3a and a back cover 3b. Although the connection method of the front cover 3a and the back cover 3b is arbitrary, for example, the front cover 3a and the back cover 3b can be connected by fitting or screwing. In the following, the dimension L1 in FIG. 2A is the “length” of the receiver 1 (housing 3), the dimension L2 in FIG. 2A is the “width” of the receiver 1 (housing 3), and FIG. The dimension L3 in (c) is the “thickness” of the receiver 1 (housing 3). Here, as shown in FIG. 2A, the front shape of the receiver 1 (housing 3) is formed in a vertically long rectangular shape such that length L1> width L2.

  An operation unit 4 and a display unit 5 are provided on the front surface of the housing 3. Specifically, the operation unit 4 instructs the receiver 1 to output the notification broadcast operation unit 4a for instructing the reproduction of the recorded notification broadcast, and the output of the FM radio broadcast received from the antenna 17 described later. A radio broadcast operation unit 4b and a volume operation unit 4c for adjusting the broadcast volume are provided. Specifically, the display unit 5 includes a power display unit 5a that is turned on when the power is turned on, an emergency broadcast display unit 5b that is lit or blinked during emergency broadcasting, and a general broadcast display unit 5c that is lit or blinked during general broadcasting. ing. In addition, an acoustic hole 6 is provided on the front surface of the housing 3 for emitting sound output from a speaker (not shown) provided inside the housing 3 to the outside of the housing 3.

  Further, as shown in FIG. 2B, a coaxial cable 10 for inputting a notification broadcast signal to the receiver 1 is connected to the receiver 1 on the back surface of the housing 3. In the coaxial cable 10, the connector portion is accommodated in the accommodating space portion 7 formed on the upper side of the casing 3, and the cable portion is accommodated in the accommodating space portion 8 formed on the right side of the casing 3. Projecting outside the housing 3 is prevented. Further, on the rear surface of the housing 3, a power cord 11 for supplying power from a commercial power source to the receiver 1 is connected to the receiver 1. The power cord 11 is prevented from protruding outside the housing 3 by housing the connector portion and the cable portion in the housing space portion 9 formed on the lower left side of the housing 3.

  Further, as shown in FIG. 2B, on the back surface of the housing 3, the receiver 1 is connected with a transfer cable 13 for outputting various transfer signals. This transfer cable 13 has a connector portion housed in a housing space 14 formed on the upper left side of the housing 3. The cable portion of the transfer cable 13 is accommodated in the accommodating space portion 8 through a guide portion 15 formed along the width direction of the casing 3 in the vicinity of the upper and lower centers of the casing 3. With such a structure, the transfer cable 13 is prevented from protruding outside the housing 3. The coaxial cable 10, the power cord 11, and the transfer cable 13 are not shown except for FIG.

  The guide portion 15 includes a small diameter portion 15a, a medium diameter portion 15b, and a large diameter portion 15c. The small-diameter portion 15a is provided on the left side of the housing 3 in the figure, and is an opening formed with a diameter that allows at least the transfer cable 13 to be inserted. The middle diameter portion 15 b is provided on the right side of the housing 3 in the figure, and is an opening formed with a diameter at which the coaxial cable 10 can be inserted. The large diameter portion 15c is provided between the small diameter portion 15a and the medium diameter portion 15b, and is an opening having a larger diameter than the medium diameter portion 15b. By providing such a guide portion 15, various wirings can be routed between the right side and the left side of the housing 3. Here, as described above, the transfer cable 13 is routed to the accommodation space portion 8 via the guide portion 15. Further, by providing such a guide portion 15, various wirings are routed from the right side to the center of the housing 3 or from the left side to the center of the housing 3 and pulled out from the large diameter portion 15c to the outside of the housing 3. Is possible. For example, the transfer cable 13 can be pulled out of the housing 3 through the small diameter portion 15a and the large diameter portion 15c, or the coaxial cable 10 can be pulled out through the medium diameter portion 15b and the large diameter portion 15c. Can be pulled out to the outside. In addition, the guide part 15 may accommodate not only the transfer cable 13 or the coaxial cable 10 but also the power cord 11. In this case, the guide portion 15 is configured to communicate with the accommodation space portion 9.

  Further, as shown in FIGS. 2A and 2B, an antenna 17 for receiving radio waves such as FM radio is provided on the left side surface of the housing 3. Therefore, even when FM radio or the like cannot be received from the center apparatus, FM radio or the like can be received by the antenna 17.

  Further, as shown in FIGS. 2B and 2C, a plurality of locking holes 1 a and 1 b are formed on the back surface of the housing 3, and a plurality of locking holes 1 c are formed on the bottom surface of the housing 3. 1d is formed. These locking holes 1a to 1d are through holes for detachably locking a locking projection 24 of the fixing plate 20 described later. The locking holes 1a and 1b are formed in a rectangular shape at a plurality of locations that are symmetrical up and down with the center of gravity of the housing 3 as the center. The locking holes 1 c and 1 d are formed in a rectangular shape at a plurality of positions that are symmetrical with respect to the center position of the housing 3.

  As shown in FIG. 2A, the housing 3 includes a battery housing portion 30 that is a space for housing a battery (not shown) and a battery cover 40 that covers the battery housing portion 30 so as to be freely opened and closed. Is provided. Thus, by providing the battery cover 40 on the front surface of the housing 3, the battery cover 40 can be easily attached and detached and replaced.

(Configuration-fixed plate)
Next, the fixing plate 20 for fixing the receiver 1 configured as described above will be described. 3A and 3B are diagrams showing the fixed plate 20, wherein FIG. 3A is a front view (the side facing the receiver 1 is the front side), FIG. 3B is a right side view, and FIG. A sectional view taken along the arrow A, (d) is a bottom view, (e) is a sectional view taken along the line BB in (a), and (f) is a rear view. 4A and 4B are diagrams showing the receiver 1 together with the fixed plate 20, wherein FIG. 4A is a rear view, FIG. 4B is a right side view, and FIG. 4C is a plan view. The fixed plate 20 is a substantially plate-like body formed of a resin material, and is interposed between the receiver 1 and the installation surface, and fixes the receiver 1 to the installation surface.

  The fixing plate 20 includes an opening 21, a pair of upper and lower screw holes 22, 23, a plurality of locking protrusions 24, and a groove 25. In the following, the dimension L4 in FIG. 3A is the “length” of the fixing plate 20, the dimension L5 in FIG. 3A is the “width” of the fixing plate 20, and the dimension L6 in FIG. The “thickness”. Here, the length L4 of the fixed plate 20 is set to be the same or shorter than the length L1 of the receiver 1 described above and the same or shorter than the width L2 of the receiver 1. The width L5 of the fixed plate 20 is set to be the same or shorter than the width L2 of the receiver 1. Here, as shown in FIG. 3A, the front shape of the fixed plate 20 is formed in a vertically long rectangular shape such that length L4> width L5.

  The opening 21 is an opening for drawing out the transfer cable 13 or the coaxial cable 10 connected to the receiver 1 to the outside of the fixed plate 20 through the large diameter portion 15c of the guide portion 15 of the receiver 1. As shown in FIGS. 3A, 3 </ b> C, and 3 </ b> F, the fixing plate 20 is provided near the center of the upper, lower, left, and right sides. The opening 21 is formed in substantially the same shape (substantially rectangular shape) as the large diameter portion 15 c of the guide portion 15, and is disposed at a position corresponding to the large diameter portion 15 c of the guide portion 15. With this structure, when the receiver 1 is fixed to the installation wall W, the transfer cable 13 or the coaxial cable 10 is not protruded outside the housing 3 through the opening 21. It can be pulled into the installation wall W.

  The pair of upper and lower screw holes 22 and 23 are for locking attachment screws (not shown) screwed into the wall surface when the receiver 1 is fixed to the installation wall W. The upper screw hole 22 is a dharma-shaped hole, and is provided with a large-diameter portion 22a having a diameter through which the head of a mounting screw (not shown) can be inserted, and provided above the large-diameter portion 22a. The head portion of the mounting screw (not shown) cannot be inserted, but is configured to communicate with a small diameter portion 22b having a diameter through which the main body portion of the mounting screw (not shown) can be inserted. The lower screw hole 23 is formed with a diameter that allows a head portion of an attachment screw (not shown) to be inserted but a body portion of the attachment screw (not shown) can be inserted, and is long along the width direction of the fixing plate 20. It is formed as a long hole.

  The plurality of locking projections 24 are provided on the front surface of the fixing plate 20, and when the receiver 1 is fixed to the installation wall W as shown in FIGS. When the receiver 1 is fixed upright on the fixing plate 20, the locking holes 1c, 1d on the bottom surface of the receiver 1 are fixed. The receiver 1 is detachably attached to the fixed plate 20 by being detachably locked to the fixed plate 20.

  The plurality of locking protrusions 24 are substantially plate-like bodies formed of the same resin material as that of the fixing plate 20, and the positions and shapes corresponding to the locking holes 1 a and 1 b of the fixing plate 20 (side surface substantially L-shaped). The shape is formed so as to protrude from the fixed plate 20 toward the receiver 1, and is arranged along the length direction of the fixed plate 20. Further, when the receiver 1 is fixed to the installation wall W, the plurality of locking protrusions 24 are arranged so that the side portions of the locking protrusions 24 along the side surfaces of the fixing plate 20 protrude upward. ing. The size of the gap between the side of the locking projection 24 along the side surface of the fixing plate 20 and the fixing plate 20 is arbitrary, but the locking force between the locking projection 24 and the locking holes 1a to 1d is strong. Therefore, for example, it is preferable to correspond to the thickness of the casing 3 of the receiver 1. The connecting method of the plurality of locking projections 24 and the fixing plate 20 is arbitrary, but for example, there is a method in which the plurality of locking projections 24 and the fixing plate 20 are integrally formed by resin molding. However, it is not limited to such a connection method, but there is a method of fixing the plurality of locking projections 24 and the fixing plate 20 with an adhesive or the like. However, by forming by resin molding, it becomes easy to manufacture the fixing plate 20, and the manufacturing cost of the fixing plate 20 can be reduced.

  The groove portion 25 is provided on the front surface of the fixed plate 20, and fits the receiver 1 to the fixed plate 20 when the receiver 1 is fixed upright with respect to the fixed plate 20. It is. That is, the plurality of locking protrusions 24 described above are arranged at positions corresponding to the locking holes 1c and 1d on the bottom surface of the receiver 1 in the groove 25, and by arranging the receiver 1 in the groove 25, The locking protrusion 24 can be locked in the locking holes 1c and 1d. Further, the groove portion 25 is provided in substantially the same shape (substantially rectangular shape) as the bottom surface of the receiver 1, and the bottom portion of the groove portion 25 is fitted into the groove portion 25 by arranging the bottom surface of the receiver 1 in this groove portion 25. be able to.

  Specifically, when the receiver 1 is fixed in an upright state with respect to the fixed plate 20, the following is performed. FIG. 5 is a perspective view of the receiver 1 fixed in an upright state. 6A and 6B are diagrams showing the receiver 1 fixed in an upright state together with the fixing plate 20, in which FIG. 6A is a front view and FIG. 6B is a right side view. As shown in FIGS. 5, 6 (a) and 6 (b), the receiver 1 locks the locking protrusions 24 of the fixing plate 20 in the locking holes 1 c and 1 d on the bottom surface of the receiver 1, By sandwiching the short side portion (side portion in the width direction of the receiver 1) from the width direction of the fixed plate 20 by the groove portion 25 of the fixed plate 20, the receiver 1 is placed on the floor surface G. It is fixed in an upright state.

(Blocking structure of component mounting opening)
Next, the component attachment port closing structure in the receiver 1 configured as described above will be described. The component attachment port closing structure is a structure provided in the housing 3 and the fixing plate 20 in order to close the component attachment port for the antenna 17 formed in the housing 3 of the receiver 1.

(Blocking structure of component mounting port-component mounting port)
First, the component mounting port, which is a premise for providing the component mounting port closing structure, will be described. 7A and 7B are views showing the front cover 3a, in which FIG. 7A is a rear view (the side facing the installation wall W or the floor G is the back), and FIG. 7B is a left side view. 8A and 8B are views showing the back cover 3b, in which FIG. 8A is a front view (a side facing the front cover 3a is a front side), and FIG. 8B is a left side view. FIG. 9 is an enlarged view of a component attachment port, (a) is a perspective view, and (b) is a cross-sectional view taken along line AA in (a). In the following description, the dimension D1 in FIG. 9B is the “width” of the component mounting opening, and the dimension D2 in FIG. 9B is the “width” of the fitting groove. Also, the dimension W1 in FIG. 9B is the “total depth” of the component mounting port, the dimension W2 in FIG. 9B is the “first depth” of the component mounting port, and the dimension W3 in FIG. 9B. Is the “second depth” of the component mounting port (fitting groove), and the dimension W4 of FIG. 9B is the “third depth” of the component mounting port (W2 to W4 are from the outside of the front cover 3a. It is the order leading to the inside).

  As shown in FIGS. 7A and 7B and FIGS. 9A and 9B, a component attachment port 50 is provided in the upper portion of the left side surface of the front cover 3a. The component attachment port 50 is for attaching the antenna 17 attached to the receiver 1, and is a substantially semi-elliptical opening having a width D1 and an overall depth W1. The base end portion of the antenna 17 can be inserted into the front cover 3a through the component mounting port 50, and the base end portion can be mechanically and electrically attached to the receiver 1 with a known structure.

  The arrangement position, the number, and the shape of the component attachment port 50 are arbitrary as long as the antenna 17 can be attached to the front cover 3a. For example, the part attachment port 50 is arranged so as to be closed in the side surface of the front cover 3a. However, in the present embodiment, the component attachment port 50 is disposed so as to be open with respect to the boundary surface between the front cover 3a and the back cover 3b. Thereby, in the state before attaching the front cover 3a to the back cover 3b, since the component attachment port 50 is open | released, the closure piece mentioned later can be easily attached to the component attachment port 50. FIG.

  Further, a connection method for connecting a closing piece 60 described later to the component mounting port 50 is arbitrary, and a method such as adhesion or welding can be adopted. However, here, attachment by a fitting structure is performed. Is called. Specifically, a fitting groove 51 for fixing a closing piece 60 described later is provided on the peripheral surface of the component mounting port 50. The fitting groove 51 is formed on the peripheral surface of the component attachment port 50 with a planar shape (substantially semi-elliptical shape) having a width D2 (> D1) and a second depth W3 (<W1). The component mounting port 50 is arranged along the circumferential direction of the peripheral surface, and is formed so as to communicate with the component mounting port 50.

(Closing structure of part mounting port-closing piece)
Next, the closing piece 60 of the fixed plate 20 will be described. 10A and 10B are diagrams showing the closing piece 60, where FIG. 10A is a perspective view, FIG. 10B is a longitudinal sectional view, and FIG. 10C is a transverse sectional view. As shown in FIGS. 3A, 3 </ b> C, 3 </ b> F, and FIGS. 10A to 10C, the fixing plate 20 is provided with a closing piece 60. The closing piece 60 is a closing portion for closing the component attachment port 50. The closing piece 60 is a substantially semi-elliptical plate-like body made of a resin material. In the following, the dimension D3 (≈D2) in FIG. 10C is the “width” of the closing piece 60, and the dimension W5 (≈W3) in FIG. 10B is the “thickness” of the closing piece 60. In this way, by making the shape of the closing piece 60 substantially the same as the shape of the fitting groove 51, the outer surface of the front cover 3a and the outer surface of the closing piece 60 are flush with each other in the back direction of the front cover 3a. The front cover 3a and the back cover 3b can be brought into contact with each other with no gap through the closing piece 60.

  The arrangement position of the closing piece 60 is arbitrary, but the closing piece 60 is preferably arranged at a position that is not exposed when the receiver 1 is fixed to the installation wall W. Here, as shown in FIG. 3A, the length L4 of the fixed plate 20 is set to be the same as or shorter than the length L1 of the receiver 1 described above, and the width of the fixed plate 20 is set. Since L5 is set to be the same or shorter than the width L2 of the receiver 1, when the receiver 1 is fixed to the installation wall W, the fixing plate is used when the receiver 1 is viewed from the front. 20 is completely covered by the receiver 1. Therefore, even if the closing piece 60 is provided at any position of the fixed plate 20, the closing piece 60 or the opening 62 described later can be made unexposed.

  Moreover, it is preferable that the closing piece 60 is disposed at a position where the closing piece 60 is not exposed when it is fixed in an upright state with respect to the fixing plate 20. Here, as shown in FIGS. 5 and 6, since the groove portion 25 of the fixed plate 20 has substantially the same shape as the bottom surface of the receiver 1, the groove portion 25 of the fixed plate 20 has a shape of the receiver 1 when viewed from the top surface. It is completely covered by the bottom. Therefore, by disposing the closing piece 60 in the groove portion 25 of the fixed plate 20, the closing piece 60 or the opening 62 described later can be made unexposed.

  For these reasons, the closed piece 60 or the opening 62 described later can be disposed at a position where the receiver 1 is not visually recognized from the outside, regardless of the fixed state of the receiver 1. Can be maintained.

  Further, a projection 61 that protrudes outward is provided on one side surface of the closing piece 60. In the following, the dimension D4 in FIG. 10C is the “width” of the protrusion 61, and the dimension W6 in FIG. 10B is the “thickness” of the protrusion 61. The protrusion 61 is provided so that the outer surface of the closing piece 60 and the outer surface of the front cover 3 a are flush with each other when the closing piece 60 is attached to the fitting groove 51. For this reason, the protrusion 61 is formed as a substantially circular plate-like body that substantially corresponds to the component mounting port 50, and its width D4 is substantially equal to the width D1 of the component mounting port 50 and its thickness. W6 is substantially equal to the first depth W2 of the component attachment port 50. With such a structure, when the closing piece 60 is attached to the component attachment port 50, the outer surface of the protrusion 61 and the outer surface of the front cover 3a are substantially flush with each other, and the appearance of the receiver 1 is maintained. In addition, the closing piece 60 fixed to the fitting groove 51 can be easily removed.

  Although the connection method of the projection part 61 with respect to the obstruction | occlusion piece 60 is arbitrary, For example, you may form these integrally by resin molding, or you may connect with an adhesive agent etc. after forming in another body. The inner surface of the front cover 3a may be flush with the inner surface of the closing piece 60. However, since these inner surfaces do not affect the appearance of the receiver 1, a protruding portion is formed on the inner surface of the closing piece 60. 61 is not provided.

  Moreover, it is preferable that the fixing plate is stably fixed to the housing 3, the installation wall W, or the floor G. For example, the closing piece 60 is arranged so that the side surface of the closing piece 60 facing the back surface of the housing 3 is non-projecting toward the housing 3 side than the side surface of the fixing plate 20 contacting the back surface of the housing 3. May be. Accordingly, since the closing piece 60 does not hinder the contact between the housing 3 and the fixing plate 20, the housing 3 and the fixing plate 20 are stably fixed even when it is unnecessary to remove the closing piece 60. can do. Further, the side surface of the closing piece 60 facing the installation wall W or the floor surface G is non-projecting toward the installation wall W or the floor surface G side than the side surface of the fixing plate 20 in contact with the installation wall W or the floor surface G. As such, the closing piece 60 may be arranged. Thereby, since the blocking piece 60 does not hinder the contact between the installation wall W or the floor surface G and the fixing plate 20, even if it is not necessary to remove the blocking piece 60, it is fixed to the installation wall W or the floor surface G. The plate 20 can be stably fixed.

  In addition, in the present embodiment, the closing piece 60 is placed in the opening space of the opening 62 of the fixing plate 20 so that the closing piece 60 can be removed from the fixing plate 20. The fixing plate 20 is connected to the side wall of the fixing plate 20 via a connecting portion 63 provided between the fixing plate 20 and the closing piece 60. The arrangement position, the arrangement number, and the shape of the connecting portion 63 are arbitrary as long as the closing piece 60 can be connected to the front cover 3a. For example, the connecting portion 63 may be provided at both right and left ends of the closing piece 60. In the embodiment, it is provided at both upper and lower ends of the closing piece 60. Although the connection method for connecting the side wall of the fixing plate 20 and the closing piece 60 via the connecting portion 63 is arbitrary, for example, the fixing plate 20 and the closing piece 60 are integrated together with the connecting portion 63 by resin molding. (To remove the gap (opening 62) between the side wall and the closing piece 60 with respect to the side wall of the fixing plate 20). Further, the specific shape of the connecting portion 63 is arbitrary, but it is preferable to set it to a shape that can be easily detached from the fixed plate 20. For example, the connecting portion 63 is formed of a substantially plate-like body having a substantially rectangular shape. Alternatively, the connecting portion 63 may be formed in a planar shape having a vertical width and a horizontal width corresponding to the plate thickness. In addition, there is not only such a connection method but also a method of fixing the closing piece 60 and the fixing plate 20 with an adhesive or the like via the connecting portion 63. However, by forming it by resin molding, it becomes easy to manufacture the closing piece 60, the manufacturing cost of the closing piece 60 can be reduced, and the trouble of manufacturing and managing the closing piece 60 can be saved.

  In addition to the method of installing the closing piece 60, for example, the fixing plate 20 and the closing piece 60 are integrally formed by resin molding, and the perforation is formed on the boundary between the closing piece 60 and the fixing plate 20. May be interposed.

(Part mounting hole closure structure-mounting method)
Next, a method of attaching the closing piece 60 having the closing structure of the component attachment port 50 will be described. 11A and 11B are diagrams showing the periphery of the component attachment port 50, where FIG. 11A is a perspective view before the closing piece 60 is attached to the component attachment port 50, and FIG. 11B is a view after the closing piece 60 is attached to the component attachment port 50. FIG. Here, since the closing piece 60 is attached to the component attachment port 50 in the case of the receiver 1 that does not include the antenna 17, a method for attaching the component attachment port 50 in the case of the receiver 1 that does not include the antenna 17 will be described. .

  First, before assembling the receiver 1, the closing piece 60 attached to the fixed plate 20 is removed using a tool such as a finger or a nipper. Next, after accommodating a circuit board or the like on which various electronic components (not shown) are mounted inside the housing 3, before connecting the front cover 3 a and the back cover 3 b of the housing 3, the closing piece 60 is replaced with a component. It is attached to the attachment port 50. For example, the closing piece 60 is inserted into the fitting groove 51 of the component mounting port 50 from the back surface of the front cover 3a in a state where the protruding portion 61 of the closing piece 60 faces the outside of the front cover 3a. Then, after the closing piece 60 is inserted into the fitting groove 51, the front cover 3 a and the back cover 3 b are connected by fitting or screwing to fix the closing piece 60 to the component mounting port 50. By attaching the closing piece 60 in this manner, the component attachment port 50 can be closed and the appearance of the receiver 1 can be maintained. Further, since the outer surface of the front cover 3a and the outer surface of the closing piece 60 are flush with each other in the rear direction of the front cover 3a, the front cover 3a and the rear cover 3b are brought into contact with each other with no gap therebetween. It is possible to prevent dust and dust from entering the housing 3.

(effect)
As described above, according to the present embodiment, by providing the closing piece 60 on the fixed plate 20, the closing piece 60 can be manufactured or managed together with the fixed plate 20. Can be omitted. In particular, by forming the closing piece 60 integrally with the fixing plate 20, the closing piece 60 can be easily manufactured, and the manufacturing cost of the closing piece 60 can be reduced. Further, by disposing the closing piece 60 at a position where the receiving plate 1 is not exposed when the receiver 1 is fixed to the installation surface in the fixing plate 20, even if it is not necessary to remove the closing piece 60 The piece 60 can be made inconspicuous when viewed from the user, or when the closing piece 60 is removed, the removed portion can be made inconspicuous from the user. The appearance of the electronic device can be maintained. Further, the closing piece 60 can be easily removed by connecting the closing piece 60 and the fixing plate 20 via the connecting portion 63.

  In addition, the component attachment port 50 is formed in the front cover 3 a and is disposed so as to be open with respect to the boundary surface between the front cover 3 a and the back cover 3 b, so that the closing piece 60 is fitted into the component attachment port 50. When attaching to the joint groove 51, the closing piece 60 can be inserted from the back side of the front cover 3a toward the component attachment port 50, and the closing piece 60 can be easily attached.

  Further, when the closing piece 60 is formed so that the outer surface of the projection 61 of the closing piece 60 and the outer surface of the front cover 3a are flush with each other, when the closing piece 60 is attached to the component mounting port 50, Thus, it can be made inconspicuous when viewed from the user, and the appearance of the receiver 1 can be further maintained.

  Further, when the closing piece 60 is provided on the fixed plate 20, the side surface of the closing piece 60 facing the housing 3 is not protruded to the housing 3 side than the side surface of the fixing plate 20 contacting the back surface of the housing 3. Therefore, since the closing piece 60 does not hinder the contact between the housing 3 and the fixing plate 20, the housing 3 and the fixing plate 20 can be stably fixed.

  Further, when the closing piece 60 is provided on the fixed plate 20, the side surface of the closing piece 60 facing the installation wall W or the floor surface G is installed more than the side surface of the fixing plate 20 contacting the installation wall W or the floor surface G. Since it becomes a non-projecting shape on the wall W or floor G side, the closing piece 60 does not hinder the contact between the installation wall W or floor G and the fixing plate 20, so the installation wall W or floor G and the fixing plate 20 Can be fixed stably.

  Further, even when the antenna 17 for receiving FM radio or the like is not required for the receiver 1 for announcement broadcasting, the blocking piece 60 provided on the fixed plate 20 is not changed without changing the specifications of the receiver 1 itself. It is possible to change the specifications of the receiver 1 simply by attaching it to the component attachment port 50.

[Modification to this embodiment]
Although the present embodiment of the present invention has been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

  First, the problems to be solved by the invention and the effects of the invention are not limited to the above-described contents, and the present invention solves the problems not described above or has the effects not described above. There are also cases where only some of the described problems are solved or only some of the described effects are achieved.

(About the dimensions and shape of the component mounting opening and closing piece)
The dimensions and shapes of the component attachment port 50 and the closing piece 60 described or illustrated in the present embodiment are examples and can be changed. In particular, the details of the shape of each part of the closing piece 60 can be arbitrarily changed regardless of the component attachment port 50 as long as the function can be exhibited.

(Regarding the placement of the blocking piece)
In the present embodiment, the case where the closing piece 60 is disposed in the groove portion 25 of the fixed plate 20 has been described. However, the present invention is not limited to such an arrangement. For example, the closing piece 60 may be provided on the bottom surface or the back surface of the housing 3. Good.

(Regarding the location of the component mounting openings)
In the present embodiment, the case where the component attachment port 50 is arranged in the front cover 3a has been described. However, the present invention is not limited to such an arrangement. For example, the component attachment port 50 is arranged according to the attachment position of the antenna 17. Or may be arranged over the front cover 3a and the back cover 3b.

(Regarding application of component mounting openings)
In the present embodiment, the present invention is applied to the component mounting port 50 of the antenna 17, but is not limited to the application to such a component. For example, any component such as a component mounting port such as an unillustrated indicator light or a changeover switch is used. It can apply in order to block | close the component attachment port for attaching.

DESCRIPTION OF SYMBOLS 1 Receiver 1a, 1b, 1c, 1d Locking hole 3 Case 3a Front cover 3b Back cover 4 Operation part 4a Notification reproduction operation part 4b Radio broadcast operation part 4c Volume operation part 5 Display part 5a Power supply display part 5b Emergency broadcast display Part 5c General broadcast display part 6 Acoustic hole 7-9, 14 Accommodating space part 10 Coaxial cable 11 Power cord 13 Transfer cable 15 Guide part 15a, 22b Small diameter part 15b Medium diameter part 15c, 22a Large diameter part 17 Antenna 20 Fixed Plates 21 and 62 Opening portions 22 and 23 Screw holes 24 Locking projections 25 Groove portions 30 Battery housing portions 40 Battery covers 50 Component mounting ports 51 Fitting grooves 60 Closing pieces 61 Protruding portions 63 Connecting portions W Installation walls G Floor surface

Claims (4)

In a closing structure for closing a component mounting port for mounting an antenna for receiving the signal when the mounting of the antenna is unnecessary , which is a component mounting port formed in a housing of a receiver that receives a signal ,
The closing portion for closing the component attachment port is an opening formed in an accessory member which is a member different from the casing and is fixed together with the casing , and the receiver is fixed to the installation surface. capable set removably in an opening formed in the position where the non-exposed form in,
In a state in which the blocking portion is removed from the opening portion of the attachment member, the opening portion is not externally fixed by fixing the receiver to the installation surface together with the attachment member while keeping the opening portion open. Can be exposed,
Blocking structure of component mounting opening. The accessory member, by being fixed to the rear surface of the receiver, and fixed in a state where the receiver was placed along the installation surface, or by being fixed to the bottom surface of the receiver, the receiver A fixing plate that can be selectively fixed to the rear surface of the receiver or the bottom surface of the receiver in order to be fixed in an upright state with respect to the installation surface;
In any state where the fixing plate is fixed to the back surface of the receiver or the bottom surface of the receiver, the blocking portion is removed to a position where it is not exposed when the receiver is fixed to the installation surface. Possible,
The block structure of the component attachment port of Claim 1. When the closing portion is provided on the attachment member, the side surface of the closing portion facing the housing is non-projecting toward the housing side than the side surface of the attachment member that contacts the side surface of the housing. So that the blocking part is arranged,
The component attachment port closing structure according to claim 1 or 2. When the blocking portion is provided on the attachment member, the side surface of the blocking portion facing the installation surface is more non-projecting toward the installation surface than the side surface of the attachment member in contact with the installation surface. The blocking part is arranged in
The component attachment port closing structure according to any one of claims 1 to 3.

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