JP2016156239A - Inspection cover with loudspeaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection cover with loudspeaker which is installed as a cover in an inspection port formed in an indoor structure which is easy-to-handle and free from strangeness.SOLUTION: An inspection cover with loudspeaker 20 is an inspection cover installed in an inspection port 10 formed in an indoor structure (ceiling part 5). The inspection cover with loudspeaker 20 includes a planar loudspeaker 30 which has a vibration plate 31 oriented to a chamber space being incorporated with a cover body 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inspection lid with a speaker attached to an inspection opening established in an indoor structure.

  Recently, a technique has been proposed in which a speaker is incorporated into an inspection lid of an inspection port provided on the ceiling of a bathroom (see, for example, Patent Document 1). The inspection lid with a speaker of the same document is a speaker using cone paper as a diaphragm, waterproofed and drip-proof treated and embedded in the lid body.

Japanese Patent No. 3528767

  However, when a cone-shaped speaker is attached to the inspection lid, it is not appropriate from the viewpoint of aesthetic sense to dispose the speaker in the room in order to dispose such an inspection lid on the ceiling without a sense of incongruity. In addition, a cover may be attached to the speaker, but the cover may become an unnatural shape as an inspection lid. Furthermore, if a large cone paper is to be attached to the lid body, naturally the depth dimension (thickness dimension) of the inspection lid also increases, which may make it difficult to remove and attach the inspection lid.

  The present invention has been proposed in view of such circumstances, and its purpose is to provide an inspection lid with a speaker that is easy to handle and has no sense of incongruity as a lid that is attached to an inspection opening established in an indoor structure. There is.

  In order to achieve the above object, an inspection lid with a speaker according to the present invention is an inspection lid with a speaker that is attached to an inspection port established in an indoor structure, and the lid body has a diaphragm facing an indoor space. It features a flat speaker.

  According to the inspection lid with a speaker of the present invention, since it has the above-described configuration, there is no sense of incongruity as a lid attached to an inspection port opened in an indoor structure. In addition, since the speaker built into the lid is a flat speaker, it is not bulky in the depth direction, and even if the plane of the diaphragm of the flat speaker becomes large, there is no possibility that handling such as removal and attachment will be difficult.

It is the perspective view which shows the example of an installation aspect (example of bathroom installation) of the inspection lid | cover with a speaker which concerns on one Embodiment of this invention, and a partial expanded schematic longitudinal cross-sectional view. It is explanatory drawing of an example of the inspection lid | cover with a speaker, (a) is a top view (surface which appears on a bathroom ceiling part surface) of the inspection lid, (b) is a longitudinal cross-sectional view which shows the attachment state of the inspection lid. It is explanatory drawing of the other example of the inspection lid | cover with a speaker, (a) is a top view (surface which appears on a bathroom ceiling part surface) of the inspection lid, (b) is a longitudinal cross-sectional view which shows the attachment state of the inspection lid. is there. (A) is a perspective view which shows the procedures for putting in and out the inspection lid, and (b) is an enlarged plan view (a state where the bathroom ceiling part is looked up). (A) (b) is a top view which shows two other examples of the inspection lid | cover with a speaker.

  Hereinafter, various examples of an inspection lid with a speaker (hereinafter abbreviated as an inspection lid) according to an embodiment of the present invention will be described with reference to the accompanying drawings. First, the schematic basic configuration of the inspection lids 20, 20... In each example will be described.

  The inspection lid 20 is an inspection lid attached to the inspection port 10 established in the indoor structure. A flat speaker 30 is incorporated in the lid main body 21 so that the diaphragm 31 faces the indoor space.

  Since the present inspection lid 20 has such a configuration, there is no sense of incongruity as a lid attached to the inspection opening 10 opened in an indoor structure such as the ceiling portion 5. Further, since the speaker incorporated in the lid is the flat speaker 30, the depth dimension (thickness dimension) of the inspection lid 20 to the back side of the ceiling can be reduced. Therefore, it is easy to handle such as removing and attaching the inspection lid 20. In addition, since the flat speaker 30 is incorporated in the inspection lid 20, it is not necessary to process the indoor structure only for the attachment of the speaker, and it is possible to save the trouble of attachment and to facilitate the construction. it can.

  As the inspection port 10 to which such an inspection lid 20 is attached, one that is established in an indoor structure such as a ceiling portion 5, a wall portion 4, or a floor portion in a building is assumed. Below, the inspection lid | cover 20 attached to the inspection port 10 of the ceiling part 5 of the bathroom 1 is demonstrated (refer FIG. 1).

  In the bathroom 1 shown in FIG. 1, a bathtub 9 is provided on the side of the wall 4 facing the door 3 so as to be adjacent to the washing place 2, and a mirror and shower are provided on the side of the wall 4 next to the wall 4. Facilities are provided.

  An indoor lamp 6 is disposed on the ceiling portion 5 of the bathroom 1, and an inspection port 10 for entering the back of the ceiling is opened in the vicinity thereof. The inspection port 10 is provided with an inspection lid 20 (part with cross-hatching in the figure). The inspection port 10 has an elliptical shape, and a similar elliptical inspection lid 20 is detachably attached (see FIGS. 2A and 3A).

  An installation section 11 for installing the inspection lid 20 is provided on the back of the ceiling plate at the opening edge of the inspection port 10. A flange portion 23 provided on the entire circumference of the inspection lid 20 is placed on the installation portion 11, and the inspection port 10 is closed by a lid plate portion 22 surrounded by the flange portion 23. The flange portion 23 has a stepped shape with the lid plate portion 22 of the lid main body 21. If the inspection lid 20 is correctly installed, the lid plate portion 22 fits into the inspection port 10 from the back side of the ceiling. There is no possibility that the lid main body 21 is laterally shifted unless it is moved upward.

  As shown in the enlarged view of FIG. 1, the inspection lid 20 includes a lid plate portion 22 formed including a flat diaphragm 31 of a flat speaker 30, and a speaker cover disposed on the back side of the lid plate portion 22. And the circuit unit 33 including the magnetic circuit 34 as a main component. The circuit unit 33 is electrically connected to the amplifier 8 disposed on the back side of the ceiling unit 5. The detailed configuration of the flat speaker 30 will be described later together with the description of the following embodiments.

  The flat speaker 30-is one device member of an audio device for enjoying sound information in the bathroom 1. An operation panel 13 for operating the acoustic device is provided on the wall 4 adjacent to the bathtub 7. The operation panel 13 may be connected to the audio device via a wiring passing through the back side of the ceiling part 5 and the wall part 4 or may be wirelessly connectable.

  Next, various embodiments of the inspection lid 20 in which the flat speaker 30 is incorporated in the lid body 21 will be described with reference to FIGS. The example shown in FIGS. 2 and 3 is an example of the inspection lid 20 in which almost the entire lid plate portion 22 is composed of the diaphragm 31 of the flat speaker 30, which is shown in FIGS. 5A and 5B. The example is an example of the inspection lid 20 in which the diaphragm 31 of the flat speaker 30 is incorporated in a part of the lid plate portion 22.

  FIG. 2A is a plan view of the inspection lid 20, and FIG. 2B is a vertical cross-sectional view showing an attachment state of the inspection lid 20. 2A is a surface that faces the indoor space (appears on the surface of the ceiling portion 5) when the inspection lid 20 is attached to the inspection port 10. FIG.

  In the inspection lid 20, most of the lid plate portion 22 of the lid body 21 is composed of a diaphragm 31 of a flat speaker 30.

  The inspection lid 20 shown in FIG. 2 has an elliptical shape as shown in FIG. 2A, and a flange portion 23 is formed around the entire periphery. A portion surrounded by the flange portion 23 of the lid main body 21 in FIG. 2A is a lid plate portion 22 that closes the inspection port 10.

  The flat speaker 30 includes a flat plate-like diaphragm 31 constituting most of the lid plate portion 22 and a magnetic circuit 34 disposed on the back side of the lid plate portion 22. Each of these parts is connected by a frame 37 made of a thin steel material or the like having a magnetic circuit 34 fixed and a peripheral edge fixed to a gasket 39 provided on the outer peripheral side of the diaphragm 31.

  As will be described later, the diaphragm 31 includes a low-frequency diaphragm 31L and a high-frequency diaphragm 31H. Each of the diaphragms 31L and 31H is formed of a material such as foamed resin, wood, metal, paper, or glass. Further, the diaphragms 31L and 31H may be formed of a new material such as a honeycomb panel or an aluminum composite plate. The outer shape of the diaphragm 31 (a low-frequency diaphragm 31L described later) is an elliptical shape that substantially matches the shape of the inspection port 10.

  The flat speaker 30 is a composite speaker, and includes a mechanism for outputting a bass sound with a large diameter and a mechanism for outputting a high sound with a small diameter. Specifically, the magnetic circuit 34 has a low-pitched magnetic circuit 34L and a high-pitched magnetic circuit 34H, and the diaphragm 31 has a low-pitched diaphragm 31L and a high-pitched diaphragm 31H.

  The low-frequency magnetic circuit 34L includes a circular back plate 34a including a center ball 34b, a ring-shaped magnet 34c, and a ring-shaped top plate 34d. A concave portion 34e is formed in the center of the lower surface of the center pole 34b of the low-pitched magnetic circuit 34L, and the high-pitched magnetic circuit 34H is coupled to the concave portion 34e.

  Similar to the configuration of the low-pitched magnetic circuit 34L, the high-pitched magnetic circuit 34H includes a circular back plate 34a including a center ball 34b, a ring-shaped magnet 34c, and a ring-shaped top plate 34d. Yes.

  A frame 37 is coupled to the low-frequency magnetic circuit 34L. A low-pitched edge 32L is coupled to the peripheral portion of the frame together with the gasket 39, and a low-frequency diaphragm 31L having an elliptical ring shape as illustrated in FIG. 2A is coupled to the low-frequency edge 32L. . An elliptic high-frequency diaphragm 31H is arranged in the central hole of the low-frequency diaphragm 31L via a high-frequency edge 32H.

  The bass diaphragm 31L and the periphery of the frame 37 are fixed by bonding with an adhesive or the like, and the internal space formed by the bass magnetic circuit 34L, both diaphragms 31L and 31H, and the frame 37 is sound. It is a sealed space that does not leak. As shown in FIG. 2B, the treble magnetic circuit 34H is arranged in this sealed space.

  A voice coil 35 is coupled to the magnetic gap of the bass magnetic circuit 34L, and a cylindrical transmission member 36 around which the voice coil 35 is wound is coupled to the bass diaphragm 31L. The intermediate portion of the transmission member 36 is connected to and held by the frame 37 by a damper 38.

  A voice coil 35 is also coupled to the magnetic gap of the treble diaphragm 31H, and a cylindrical transmission member 36 around which the voice coil 35 is wound is coupled to the high temperature diaphragm 31H.

  Thus, the low-frequency diaphragm 31L is vibrated by the driving force generated from the low-frequency magnetic circuit 34L and the voice coil 35, and the high-temperature diaphragm 31H is vibrated by the driving force generated from the high-temperature magnetic circuit 34H and the voice coil 35. Sound is generated by this.

  When such an inspection lid 20 is placed so that the flange portion 23 is placed on the installation portion 11 of the inspection port 10 and the inspection port 10 is closed by the lid plate portion 22 (the vibration plate 31), the entire surface of the vibration plate 31 is covered. Facing the space in the bathroom. Further, the lid surface of the lid plate portion 22 (the surface facing the indoor side) is arranged substantially flush with the surface of the surrounding ceiling portion 5. That is, the inspection lid 20 and the surrounding ceiling portion 5 have substantially the same height surface with a gap between them.

  Thus, since the flat speaker 30 is incorporated in the inspection lid 20, it is not necessary to process the ceiling part 5 and the wall part 4 only for the attachment of the speaker, and the installation work can be saved. Simplification can be achieved.

  In addition, since the lid portion 22 is substantially flat including both edges 32L and 32H, the diaphragm 31 can be obtained by matching the color and pattern of the diaphragm 31 with the ceiling portion 5 when the inspection opening 10 is closed with the inspection lid 20. There is almost no sense of incongruity as a part of the ceiling part 5. Therefore, there is almost no possibility that the aesthetic feeling is impaired by the exposed diaphragm 31. In addition, since almost the entire lid surface of the lid plate portion 22 of the lid body 21 is constituted by the diaphragm 31, the diaphragm 31 can be enlarged according to the dimensions of the inspection lid 20. Thus, even when almost the entire cover surface of the cover plate portion 22 is configured by the diaphragm 31, the cover surface is substantially flush with the surface of the surrounding ceiling portion 5, so that the speaker itself is not noticeable. . Thus, there is a high possibility that the inspection lid 20 is recognized only as a simple lid attached to the inspection port 10.

  The lid plate portion 22 includes a low-pitched vibration plate 31L, a high-pitched vibration plate 31H, a low-pitched sound edge 32L, and a high-pitched sound edge 32H. Since these appear on the lid surface, the lid plate portion 22 is prevented from exposing them. You may make it cover.

  The example shown in FIG. 3 is an example of the inspection lid 20 in which the entire lid plate portion 22 is composed of the diaphragm 31 of the flat speaker 30. FIG. 3A is a plan view of the inspection lid 20, and FIG. 3B is a vertical cross-sectional view showing an attachment state of the inspection lid 20. In addition, the surface shown as a plan view in FIG. 3A is a surface that faces the indoor space (appears on the ceiling portion 5 surface) when attached to the inspection port 10.

  In the inspection lid 20, the entire lid plate portion 22 of the lid body 21 is composed of a diaphragm 31 of a flat speaker 30.

  The inspection lid 20 shown in FIG. 3 has an elliptical shape as shown in FIG. 3A, and a flange portion 23 is formed around the entire periphery. A portion surrounded by the flange portion 23 of the lid body 21 in FIG. 3A is a lid plate portion 22 that closes the inspection port 10.

  The planar speaker 30 includes a flat diaphragm 31 that constitutes the entire cover plate portion 22 and a magnetic circuit 34 disposed on the back side of the cover plate portion 22. The magnetic circuit 34 is fixed to the center portion of a frame 37 made of a thin steel material or the like, and the outer peripheral end surface on the back side of the diaphragm 31 is fixed to the peripheral portion of the frame 37.

  The diaphragm 31 has an elliptical shape that matches the shape of the inspection port 10 and is formed of a foamed resin, a material such as wood, metal, paper, glass, or a new material such as a honeycomb panel or an aluminum composite plate.

  The diaphragm 31 and the frame 37 are fixed at the peripheral edge by bonding with an adhesive or the like, and the internal space formed between the diaphragm 31 and the frame 37 is a sealed space that does not leak sound. . As shown in FIG. 3B, the magnetic circuit 34 is arranged in a state of being fixed to the frame 37 in this sealed space.

  The detailed configuration and structure of the magnetic circuit 34 are substantially the same as the low-pitched magnetic circuit 34L and the high-pitched magnetic circuit 34H shown in FIG. 2B, and thus detailed illustration and description thereof will be omitted.

  A voice coil 35 is coupled to the magnetic gap of the magnetic circuit 34, and a cylindrical transmission member 36 around which the voice coil 35 is wound is coupled to the diaphragm 31. The intermediate portion of the transmission member 36 is connected to and held by the frame 37 by a damper 38.

  A bent horizontal flat portion 36 a is formed at the lower end of the transmission member 36, and the horizontal flat portion 36 a is joined to the center portion of the diaphragm 31. Thus, sound is generated by vibrating the diaphragm 31 by the driving force generated from the magnetic circuit 34 and the voice coil 35.

  Further, since the horizontal flat portion 36a is provided, the horizontal flat portion 36a is used in place of the conventional edge (low sound edge 32L, high sound edge 32H) also used in FIG. Can do. Since it is not necessary to form an edge on the flat speaker 30, the diaphragm 31 can be provided on the entire cover plate portion 22.

  As in the example shown in FIG. 2, the inspection lid 20 vibrates when the flange portion 23 is placed on the installation portion 11 and the inspection port 10 is closed by the lid plate portion 22 (vibrating plate 31). The entire surface of the board 31 faces the space in the bathroom. Further, the lid surface of the lid plate portion 22 (the surface facing the indoor side) is arranged substantially flush with the surface of the surrounding ceiling portion 5.

  Thus, since the flat speaker 30 is incorporated in the inspection lid 20, it is not necessary to process the ceiling part 5 and the wall part 4 only for the attachment of the speaker, and the installation work can be saved. Simplification can be achieved. Moreover, when attaching a speaker to the bathroom 1, since the narrow ceiling part 5 can be utilized effectively, the convenience of this inspection lid | cover 20 is high.

  Further, since the diaphragm 31 of the flat speaker 30 is formed as a large flat plate without unevenness, the diaphragm 31 can be obtained by matching the color and pattern of the diaphragm 31 with the ceiling portion 5 in a state where the inspection opening 10 is closed with the inspection lid 20. Almost never feel uncomfortable as part of the ceiling 5. Therefore, there is almost no possibility that the aesthetic feeling is impaired by the exposed diaphragm 31. In addition, since the entire lid surface of the lid plate portion 22 of the lid body 21 is configured by the diaphragm 31, the diaphragm 31 can be enlarged according to the dimensions of the inspection lid 20. Thus, even when the entire cover surface of the cover plate portion 22 is configured by the diaphragm 31, the cover surface is substantially flush with the surface of the surrounding ceiling portion 5, so that the speaker itself is not noticeable. Thus, there is a high possibility that the inspection lid 20 is recognized only as a simple lid attached to the inspection port 10.

  Further, the inspection lid 20 of FIG. 3 has no edge, and the entire lid surface of the lid plate portion 22 can be formed by the flat diaphragm 31, which is excellent in aesthetics. Furthermore, since the entire lid surface of the inspection lid 20 vibrates, the acoustic effect is great. Of course, the diaphragm 31 may be covered with a cover.

  As described above, the inspection lid 20 allows the bathroom 1 to be used as an excellent acoustic space in a simple manner. In addition, when installing this inspection lid | cover 20 in the bathroom 1 like the said embodiment, it cannot be overemphasized that it is desirable to waterproof and drip-proof the principal part of the plane speaker 30. FIG.

  As described above, the inspection lids 20 and 20 illustrated in FIG. 2 and FIG. 3 are configured by the diaphragm 31 in almost the entire lid surface of the lid plate portion 22. It can be enlarged to match. Therefore, it is effective for output in the low sound range. Since the speaker is a flat speaker 30, even if the diaphragm 31 is arranged on almost the entire cover surface as in the examples of FIGS. 2 and 3, it is not bulky in the depth direction and is difficult to handle such as removal and attachment. There is no fear of becoming.

  Also, the elliptical inspection lids 20 and 20 illustrated in FIG. 2 and FIG. 3 have a shape that matches the elliptical shape of the inspection port 10, so that they are attached and removed as shown in FIG. 4. What is necessary is just to put in and out the inspection lid 10 with respect to the inspection port 10 of the ceiling part 5. Specifically, for example, as shown in FIG. 4 (b), the inspection lid 20 may be taken in and out so that the major axis direction of the inspection lid 20 is substantially orthogonal to the major axis direction of the inspection port 10.

  If the shape of the inspection lid 20 is a perfect circle, naturally the outer shape does not change even if the orientation of the inspection lid 20 is changed. Therefore, if the shape of the inspection port 10 and the inspection lid 20 is a perfect circle, the inspection lid 20 can hardly be inserted into and removed from the inspection port 10 if the inspection lid 20 is further formed with the flange portion 23. However, since the outer shapes of the main inspection port 10 and the main inspection lid 20 are elliptical, even if the flange portion 23 is formed on the entire circumference side of the lid plate portion 22, the inspection lid 20 is as shown in FIG. You can securely put in and out by changing the direction. In order to ensure the insertion and removal, as shown in FIG. 4B, the dimension of the major axis R1 of the inspection port 10 is larger than the dimension of the minor axis R2 of the inspection lid 20 including the flange portion 23. It goes without saying that there is a need.

  Thus, by making the shape of the inspection port 10 and the inspection lid 20 elliptical, it is not difficult to put in and out the inspection lid 20, and inspection of the back of the ceiling and maintenance of the flat speaker 30 (see FIG. 2 etc.) Can be performed easily and quickly.

  Further, the shape of the inspection port 10 and the inspection lid 20 may be a non-circular shape (a shape other than a circular shape) such as a square or a hexagon. Of course, the shape of the inspection port 10 and the inspection lid 20 may be a perfect circle. In that case, the shape of the inspection port 10 is a perfect circle that is slightly larger than the outer shape of the lid plate portion 22 of the inspection lid 20, and a passage port through which the flange portion 23 can be taken in and out of the periphery of the inspection port 10 is provided. What is necessary is just to provide.

  In addition, the outer shape of the diaphragm 31 of the inspection lids 20 and 20 illustrated in FIGS. 2 and 3 is a shape that matches the elliptical shape of the lid plate portion 22, but is a perfect circle shape like the magnetic circuit 34. May be. In that case, the lid plate portion 22 may be configured by fitting the diaphragm 31 into a frame having an elliptical outer shape.

  FIGS. 5A and 5B are plan views showing other two examples of the inspection lid 20. These are inspection lids 20 each having a lid plate portion 22 configured by attaching a diaphragm 31 having a perfect circular shape to a frame plate 22a. The inspection lid 20 in FIG. 4A includes one diaphragm 31, and the inspection lid 20 in FIG. 5B includes two diaphragms 31 and 31.

  As shown by broken lines in the figure, for example, a magnetic circuit 34 shown in FIG. 3 is incorporated in the lid main body 21 of these inspection lids 20 corresponding to the diaphragm 31. The lid body 21 includes a flange portion 23 on the outer peripheral side of the lid plate portion 22.

  Although the diaphragm 31 shown in FIGS. 5 (a) and 5 (b) is a perfect circle, the diaphragm 31 is attached to the frame plate 22a so that the inspection lid 20 has an elliptical shape, and is inserted into and removed from the inspection port 10. Therefore, there is no particular problem with the shape of the diaphragm 31.

  Moreover, the inspection lid 20 may be attached to the inspection port 10 provided in the ceiling part 5 other than the bathroom 1, or may be attached to various wall parts 4 (see FIG. 1) and inspection ports provided on the floor. . The inspection lid 20 may be attached to the inspection port 10 of various indoor structures such as the ceiling, the wall 4, and the floor of a kitchen, a washroom, a living room, a living room, an office, and the like.

  Further, the inspection lid 20 is not limited to one that can be removed when the inspection port 10 is opened. For example, it may be hinged to the opening edge of the inspection port 10 so that it can be opened and closed, or it may be attached to the back of the ceiling so that it can be freely opened and closed.

5 Ceiling (indoor structure)
10 Inspection port 20 Inspection lid with speaker (Inspection lid)
21 Lid body 22 Lid plate part 30 Flat speaker 31 Diaphragm

Claims (4)

An inspection lid with a speaker attached to an inspection opening established in an indoor structure,
An inspection lid with a speaker, characterized in that a flat speaker is incorporated in the lid body so that the diaphragm faces the indoor space. In claim 1,
The indoor structure is a ceiling;
An inspection lid with a speaker, wherein the lid body has a non-circular shape. In claim 1 or 2,
The flat speaker is an inspection lid with a speaker in which the entire lid surface of the lid body vibrates. In claim 3,
An inspection lid with a speaker, wherein the lid surface of the lid body is formed substantially flush with a ceiling surface around the lid body.

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