JP7264546B2 - Speaker system and covering - Google Patents

Description

The present invention relates to speaker systems.

Various types of loudspeaker systems are currently known. Among such speaker systems, there are also known speaker systems that can be used for ornamental purposes. For example, Patent Document 1 below discloses a speaker system having a speaker unit attached to a ceramic pot. Further, Patent Document 2 below discloses a speaker system having a speaker unit attached to a side portion of spheroidal porcelain.

In Patent Documents 1 and 2, a speaker unit is attached to the side of pot-like pottery or porcelain. That is, the pottery or porcelain serves as a baffle or enclosure for the speaker unit.

JP-A-6-319187 JP 2013-198026 A

Ceramic or porcelain loudspeaker baffles can help improve sound quality. However, the sound waves generated by the speaker unit may be repeatedly reflected off the inner wall of the ceramic or porcelain enclosure, resulting in an annoying rebound sound.

Therefore, a loudspeaker system capable of improving the sound quality due to the reverberation of the ceramic or porcelain plate is desired.

A speaker system according to one aspect includes a speaker unit, a frame to which the speaker unit is attached, and a covering that is spaced apart from the speaker unit at least in a region facing the speaker unit. . The covering is made of pottery or porcelain. A plurality of holes are provided in a region of the cover facing the speaker unit.

According to the above aspect, it is possible to provide a speaker system capable of improving the sound quality due to the reverberation of the earthenware or porcelain plate.

1 is a perspective view of a speaker system according to a first embodiment; FIG. 1 is a front view of a speaker system according to a first embodiment; FIG. 1 is a top view of a speaker system according to a first embodiment; FIG. 1 is a front view of the speaker system according to the first embodiment with the covering removed; FIG. 5A is a cross-sectional view of the speaker system along line 5A-5A of FIG. 1; FIG. 6A is an enlarged cross-sectional view of the covering along line 6A-6A of FIG. 1; FIG. FIG. 10 is a front view of a speaker system according to a second embodiment; FIG. FIG. 10 is a top view of a speaker system according to a second embodiment; FIG. 11 is a front view of a speaker system according to a third embodiment; FIG. 11 is a top view of a pedestal included in a speaker system according to a third embodiment; FIG. 11 is a front view of a speaker system according to a fourth embodiment; FIG. 11 is a front view of a speaker system according to a fifth embodiment;

Embodiments will be described below with reference to the drawings. In the following drawings, the same or similar parts are given the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the ratio of each dimension may differ from the actual one.

[First embodiment]
FIG. 1 is a perspective view of the speaker system according to the first embodiment. FIG. 2 is a front view of the speaker system according to the first embodiment. FIG. 3 is a top view of the speaker system according to the first embodiment. FIG. 4 is a front view of the speaker system according to the first embodiment with the covering removed. FIG. 5 is a cross-sectional view of the speaker system along line 5A-5A of FIG. 6 is an enlarged cross-sectional view of the covering along line 6A-6A of FIG. 1; FIG.

A speaker system 10 according to the first embodiment has a speaker unit 100 , a frame 110 and a cover 200 . The speaker unit 100 may have any known configuration.

As an example, speaker unit 100 may include transducer 102, diaphragm 104, and cone 106, for example. The vibrator 102 may be an element that converts an electric signal (audio signal) into vibration by a combination of a so-called voice coil and a permanent magnet. However, it should be noted that transducer 102 is not limited to this configuration. Although not shown, the speaker system 100 may have a device, an electric cord, or the like for receiving an electric signal (audio signal).

Diaphragm 104 may be vibrated by the action of vibrator 102 . Any known diaphragm can be used as the diaphragm 104 . The cone 106 may typically be cone-shaped (more specifically, a truncated cone-shaped opening at the bottom).

The speaker system 10 may have a plurality of speaker units 100 described above. In this case, the plurality of speaker units 100 may be attached to the same frame 110, which will be described later. By changing the frequency band suitable for each speaker unit 100, the audible frequency band of the entire speaker system 10 can be widened.

The frame 110 may be made of wood, for example. The frame 110 has a plate to which the speaker unit 100 is attached. Frame 110 may preferably constitute a box-shaped enclosure. If the frame 110 is a box-shaped enclosure, it is possible to further improve the sound quality of the bass range. The enclosure is not particularly limited, but may be a so-called closed type, buffless type, or the like. Note that the enclosure does not have to be completely sealed, and may have a through hole (not shown).

The frame 110 is preferably made of wood. In particular, frame 110 more preferably constitutes a wooden enclosure. As a result, the speaker system 10 can emit warm and stable sound by suppressing excessive reflection (resonance) of sound waves inside the enclosure. In particular, by combining earthenware or porcelain (cover 200) and wood (frame 110), it is possible to suppress harsh recoil sounds caused by repeated reflections while maintaining reverberating sounds peculiar to earthenware or porcelain. .

The cover 200 is provided at least in a region facing the speaker unit 100 with a space SP from the speaker unit 100 . More preferably, the cover 200 is provided with a space SP from the frame 110 to which the speaker unit 100 is attached.

The cover 200 is made of pottery or porcelain. Further, a plurality of holes 210 are provided in a region of cover 200 facing speaker unit 100 . It should be noted that holes 210 are indicated by gray or black areas in FIGS. A plurality of holes 210 are provided directly in the ceramic or porcelain wall. That is, the walls around the hole 210 are made of pottery or porcelain. The thickness of the pottery or porcelain forming the cover 200 may be, for example, about 0.5 mm to 2.0 cm. For example, by setting the thickness of the cover 200 to 0.5 mm or more, the cover 200 can withstand its own weight and is less likely to be distorted during firing.

Also, the cover 200 may be integrally formed of pottery or porcelain. That is, the covering 200 itself may be formed seamlessly. In this case, the plurality of holes 210 are formed directly in the seamless pottery or porcelain wall.

Sound waves emitted from the speaker unit 100 vibrate the cover 200 made of earthenware or porcelain. As a result, the speaker system 10 can emit a pleasant tone peculiar to pottery or porcelain. On the other hand, since a plurality of holes 210 are provided in the area of the cover 200 facing the speaker unit 100, sound waves are not excessively and repeatedly reflected by the cover 200 made of pottery or porcelain. Therefore, it is possible to suppress the generation of harsh recoil.

From the viewpoint of suppressing offensive rebound sound, the aperture ratio defined by the plurality of holes 210 in the region of the cover 200 facing the speaker unit 100 is, for example, in the range of 20% to 80%, preferably 30%. % to 70%. A plurality of holes 210 formed in pottery or porcelain can be formed by a carving method called openwork, for example, related to pottery.

A region S in which a plurality of holes 210 are provided (hereinafter sometimes referred to as a “hole formation region”) is larger than the region of speaker unit 100 when viewed from the direction facing speaker unit 100. . Therefore, some (typically, many) of the plurality of holes 210 are provided in an area overlapping with the speaker unit 100 when viewed from the direction facing the speaker unit 100, but the plurality of holes 210 The remaining part of them is provided in a region that does not overlap the speaker unit 100 when viewed from the direction directly facing the speaker unit 100 . The direction facing the speaker unit 100 may be the direction along the X-axis in the figure. When diaphragm 104 is cone-shaped as described above, the facing direction may be a direction along the central axis of the cone.

In this manner, when the plurality of hole forming areas S are larger than the area of the speaker unit 100, the sound waves emitted from the diaphragm 104 easily pass through the cover 200 and are effectively transmitted to the outside.

Furthermore, it is preferable that the total area of the plurality of holes 210 when viewed from the direction facing the speaker unit 100 is equal to or larger than the area of the diaphragm 104 . For example, the total area of the plurality of holes 210 viewed from the direction facing the speaker unit 100 is more preferably in the range of 1.0 to 2.0 times the area of the diaphragm 104. More preferably, it is in the range of 1.2 to 1.8 times the area. Diaphragm 104 acts to vibrate (compress and expand) air by vibration. In order for this vibrating air (sound wave) to effectively transmit vibrations to the outside from the plurality of holes 210, the total area of the holes 210 is preferably within the range described above. Here, when a plurality of speaker units 100 are provided, it is preferable that each speaker unit 100 satisfies the relationship between the area of the diaphragm 104 and the total area of the plurality of holes 210 .

In order to facilitate the effective transmission of sound waves emitted from diaphragm 104 to the outside from cover 200, the minimum distance between speaker system 100 and plurality of holes 210 is, for example, 5 cm or less, preferably 4 cm or less. can be

In addition, as described above, if the cover 200 is integrally and seamlessly formed of pottery or porcelain, it is possible to prevent abnormal noise caused by the collision of the pottery or porcelain at the joints due to vibration. .

The maximum diameter size of each hole 210 is, for example, 3 cm or less, preferably 2 cm or less. As a result, the cover 200 has a large number of small holes. Reducing the size of each hole 210 makes it difficult for foreign matter such as dirt and dust to enter the inside of the cover 200 . Further, by reducing the size of each hole 210, the speaker unit 100 becomes difficult to be visually recognized from the outside, and the design of the speaker system 10 can be improved. For example, when the cover 200 made of pottery or porcelain is decorated with a pattern, the plurality of holes 210 can also be recognized as part of the decoration. It becomes possible to improve the designability of.

In the first embodiment, a hole formation region S is provided for each speaker unit 100 . It is preferable that the plurality of holes 210 provided in the hole forming region S have diameter-enlarged regions 212 in which the diameter of the holes 210 increases toward the speaker unit 100 from the outside of the cover 200 (see FIG. 6). reference). In other words, one side of the cover 200 facing the speaker unit 100 is chamfered and curved at the edge adjacent to the hole 210 . As a result, the sound waves generated by the speaker unit 100 can easily pass through the hole 210 to the outside, and the sound quality of the speaker system 10 is improved.

Furthermore, it is preferable that the plurality of holes 210 have diameter-enlarging regions 211 in which the diameter of the holes 210 increases from the inside to the outside of the cover 200 (see FIG. 6). In other words, one outward facing side of the covering 200 is chamfered and curved at the edge adjacent to the hole 210 . This makes it easier for the sound waves to escape inward through the hole portions 210 when the air flows in through the hole portions 210 due to the vibration of the air accompanying the sound waves. As a result, the sound quality of the speaker system 10 is improved. More preferably, as shown in the figure, the diameter of the hole 210 formed in the covering 200 is relatively large near both the inner and outer surfaces, and relatively large near the center in the thickness direction of the covering 200. small.

Instead, if the edge of the cover 200 adjacent to the hole 210 is sharp on one side facing the speaker unit 100, sound waves are likely to be diffusely reflected, and a high-pitched reverberation sound is likely to be generated. However, the edge of the cover 200 adjacent to the hole 210 may be sharp if little high-pitched reverberation is generated.

The cover 200 is attached to the attached portion by a fixing member 300 . In the first embodiment, the attached portion is the frame 110 . Various members such as screws, screws, nails, and anchors can be used as the fixing member 300 .

An elastic member 400 is preferably provided between the frame 110 and the cover 200 . The elastic member 400 may be, for example, a rubber member. Vibration of frame 110 to which speaker unit 100 is attached is absorbed by elastic member 400 . As a result, it is possible to suppress the generation of noise caused by the vibration of the frame 110 directly hitting the cover 200 made of pottery or porcelain.

Moreover, it is preferable that an elastic member 310 is provided around the fixing member 300 , more specifically between the fixing member 300 and the cover 200 . In this case, it is possible to suppress the generation of abnormal noise caused by the vibration of the frame 110 coming into contact with the cover 200 via the fixing member 300 .

[Second embodiment]
Next, a speaker system according to the second embodiment will be described. FIG. 7 is a front view of the speaker system according to the second embodiment. FIG. 8 is a top view of the speaker system according to the second embodiment. Note that hereinafter, the same reference numerals are assigned to the same configurations as in the first embodiment. Below, the description may be abbreviate|omitted about the structure similar to 1st Embodiment.

In the second embodiment, the shape of the frame 110 and the shape of the cover 200 are different from those in the first embodiment. Specifically, the cover 200 covers the front surface 112 of the frame 110 to which the speaker unit 100 is attached and the side surface 114 continuously extending from the front surface 112 . The shape of the front surface 112 and the side surface 114 of the frame 110 are shaped along the shape of the cover 200 .

As a result, the cover 200 has a shape surrounding the sides of the front face 112 to which the speaker unit 100 is attached, so that sound leakage from the sides can be suppressed. This facilitates the generation of sounds peculiar to pottery or porcelain.

In the second embodiment, the hole forming regions S provided for the respective speaker units 100 are provided so as to overlap each other.

[Third embodiment]
Next, a speaker system according to the third embodiment will be described. FIG. 9 is a front view of the speaker system according to the third embodiment. FIG. 10 is a top view of a pedestal included in the speaker system according to the third embodiment. Note that FIG. 10 does not show the configuration other than the pedestal 500 . Note that hereinafter, the same reference numerals are assigned to the same configurations as in the first embodiment. Below, the description may be abbreviate|omitted about the structure similar to 1st Embodiment.

In the third embodiment, the cover 200 covers the entire frame 110 . That is, the cover 200 has a box-like shape, for example, like a pot. Here, if the frame 110 is a box-shaped enclosure, then in the third embodiment there will be a double box-shaped enclosure.

Since the speaker unit 100 and the frame 110 are surrounded by the cover 200 as an outer enclosure, it is possible to prevent sound from leaking from unintended locations other than the plurality of holes 210 .

In the third embodiment, the cover 200 and the frame 110 are provided on the pedestal 500 . The cover 200 and the frame 110 may be attached to the pedestal 500 by fixing members (not shown). Various members such as screws, screws, nails, and anchors can be used as the fixing member. Further, an elastic member as described above may be provided around the fixing member, more specifically, between the fixing member and the cover 200 .

Cover 200 does not have to be in direct contact with speaker unit 100 or frame 110 . As a result, it is possible to suppress the generation of noise caused by the vibration of the frame 110 directly hitting the cover 200 made of pottery or porcelain.

In the third embodiment, the cover 200 is attached to a pedestal 500 as an attached portion by a fixing member. Although not shown, an elastic member (for example, an elastic sheet) capable of absorbing vibration may be provided between the pedestal 500 and the cover 200 .

Here, since the dimensions of earthenware or porcelain change due to firing, it is difficult to form the cover 200 according to the dimensions designed in advance. On the other hand, since the dimensions of the frame 110 (especially the enclosure) of the speaker unit 100 are designed from the viewpoint of acoustics, there is little room for design changes.

Therefore, when the cover 200 is directly attached to the frame 110, it may be difficult to attach the cover 200 to the frame 110 if the cover 200 greatly deviates from the designed dimensions due to dimensional changes during firing. Here, in the third embodiment, the cover 200 is attached to the pedestal 500 instead of directly attached to the frame 110 .

Since the size and shape of the base 500 are sufficient as long as the cover 200 and the frame 110 can be mounted thereon, there is considerable room for design changes. Therefore, the size and shape of the pedestal 500 can be determined according to the dimensions of the manufactured covering 200 after the covering 200 is prepared first. As a result, it is possible to suppress the decrease in yield due to the dimensional deviation of the cover 200 made of pottery or porcelain.

From this point of view, it is preferable that the pedestal 500 is made of a material whose dimensions are difficult to change during manufacturing. For example, the pedestal 500 may be made of wood or synthetic resin. More preferably, the pedestal 500 may be made of wood. In this case, as described above, the combination of pottery or porcelain (cover 200) and wood (frame 110 and pedestal 500) maintains the reverberation sound peculiar to pottery or porcelain, while reducing the harshness caused by repeated reflections. Recoil can be suppressed.

In the third embodiment, the speaker system 10 has three speaker units 100, and the hole forming regions S provided for the respective speaker units 100 overlap each other.

[Fourth embodiment]
Next, a speaker system according to the fourth embodiment will be described. FIG. 11 is a front view of the speaker system according to the fourth embodiment. Note that hereinafter, the same reference numerals are assigned to the same configurations as in the first embodiment. Below, the description may be abbreviate|omitted about the structure similar to 1st Embodiment.

In the fourth embodiment, the cover 200 covers the entire frame 110 as in the third embodiment. That is, the cover 200 has a box-like shape, for example, like a pot. Here, if the frame 110 is a box-shaped enclosure, then in the fourth embodiment there will be a double box-shaped enclosure.

In the fourth embodiment, the covering 200 may have a lid portion 600 . By removing the lid portion 600, the speaker unit 100 and the frame body 110 can be accessed. This makes it possible to repair the speaker unit 100 when a problem occurs in the speaker unit 100 . In addition, the speaker unit 100 and the frame 110 can be placed inside the cover 200 during manufacturing with the lid 600 removed.

Alternatively, the bottom of cover 200 may be open so that speaker unit 100 and frame 110 can be accessed by removing cover 200 from pedestal 500 .

Further, in the fourth embodiment, the hole formation regions S are provided for every two speaker units 100 .

[Fifth embodiment]
Next, a speaker system according to the fifth embodiment will be described. FIG. 12 is a front view of the speaker system according to the fifth embodiment. Note that hereinafter, the same reference numerals are assigned to the same configurations as in the first embodiment. Below, the description may be abbreviate|omitted about the structure similar to 1st Embodiment.

In the fifth embodiment, a pair of left and right speaker systems are illustrated. In the fifth embodiment, similarly to the third and fourth embodiments, the cover 200 covers the frame 110 and the speaker unit 10 as a whole. That is, the cover 200 has a box-like shape, for example, like a pot. Furthermore, the speaker system 10 has a pedestal 500 as in the third and fourth embodiments. Materials for the cover 200 and the base 500 are as described in the above-described embodiment.

In the fifth embodiment, the cover 200 is decorated like a pattern. More specifically, the decoration is applied integrally to both the outside of the hole forming area S and the hole forming area S. As shown in FIG. By forming a large number of small holes 210, the walls of the cover 200 surrounding the holes 210 can also be decorated with patterns. As a result, it is possible to construct a speaker system with a high degree of design.

As described above, the subject matter of the present invention has been disclosed through embodiments, but the statements and drawings forming part of this disclosure should not be construed as limiting the present invention. Various alternative embodiments, implementations and operational techniques will become apparent to those skilled in the art from this disclosure. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention according to the valid scope of claims based on the above description.

10 Speaker System 100 Speaker Unit 104 Diaphragm 110 Frame 200 Cover 210 Hole 300 Fixing Member 310 Elastic Member 400 Elastic Member 500 Base 600 Cover S Hole Forming Area SP Space

Claims (7)

a speaker unit,
a frame to which the speaker unit is attached;
a covering arranged at least in a region facing the speaker unit with a gap from the speaker unit;
The covering is made of pottery or porcelain,
The frame is made of wood,
The cover is arranged to face the frame around the speaker unit and the speaker unit, and forms a space between the cover and the frame,
A plurality of holes are provided in a region of the cover facing the speaker unit,
The sound wave emitted by the speaker unit is transmitted outside from the plurality of holes through the space between the frame and the cover,
At least one of one surface of the cover facing the speaker unit and one surface facing the outside of the cover is chamfered and curved at an edge adjacent to the hole. . 2. The speaker system according to claim 1, wherein an area of said cover facing said speaker unit has an aperture ratio defined by said plurality of holes in a range of 20% to 80%. 3. The speaker system according to claim 1, wherein said plurality of holes are provided over a region overlapping said speaker unit and a region not overlapping said speaker unit when viewed in a direction directly facing said speaker unit. The diameter of each of the plurality of holes increases from the center in the thickness direction of the covering toward the speaker unit and/or from the center in the thickness direction of the covering toward the outer side of the covering. 4. A loudspeaker system according to any one of claims 1 to 3, comprising: The covering is attached to the attached portion by a fixing member,
5. The speaker system according to any one of claims 1 to 4, wherein an elastic member is provided between said cover and said attached portion. The covering is attached to the attached portion by a fixing member,
5. The speaker system according to claim 1, wherein an elastic member is provided between said cover and said fixing member. A covering attached to a region facing the speaker unit,
The covering is made of pottery or porcelain,
A plurality of holes are provided in a region of the cover facing the speaker unit,
At least one of one surface of the covering facing the speaker unit and one surface facing the outside of the covering is chamfered and curved at an edge adjacent to the hole. .

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