Sound adjustment device for mobile devices

Abstract

To provide a sound adjustment tool for a mobile terminal which has a simple structure and is excellent in both sound collection and sound insulation. [Solution] A sound control device 1 for a mobile terminal includes a base 2 on which a mobile terminal 20 is placed, a pair of side walls 3 that rise approximately perpendicular to the base 2 and are disposed on both sides of the base 2, and a rear wall 4 that rises approximately perpendicular to the base 2 and is disposed on the rear side of the base 2, with the side walls 3 and rear wall 4 being integrally connected. The sound control device 1 for a mobile terminal is shaped using origami paper. A base 10 is prepared on both sides of which a shape that will become the basis for origami is printed, and the three-dimensional sound control device 1 for a mobile terminal can be created by folding it along creases 11. When a user speaks into the mobile terminal 20, the sound is reflected off the inner surfaces of the side walls 3 and rear wall 4 and directed inward. At the same time, the side walls 3 and rear wall 4 act as soundproofing to prevent sound from leaking to the outside, ensuring that the mobile terminal 20 can reliably pick up even quiet voices.

Description

[Technical Field]

[0001] The present invention relates to a sound control device for a mobile terminal that is placed around the mobile terminal to collect and block sound. [Background technology]

[0002] BACKGROUND ART Techniques for reducing sounds of conversations on mobile terminals (such as mobile phones, smartphones, and tablet computers) and external sounds are known (Patent Documents 1 and 2).

[0003] Patent document 1 describes a mobile phone soundproofing device box that uses leather, synthetic leather, vinyl, cloth, or other soft materials to create a soundproof cover case for a mobile phone, allowing for easy soundproofing and, by adding herbs or other materials, allowing for comfortable conversations.

[0004] Patent Document 2 describes a smartphone / mobile terminal cover that has a manners board that blocks nasal breathing installed on the right end of the bottom cover of the cover that opens up and down, and a soundproof manners board installed on the bottom end of the bottom cover of the cover that opens up and down, thereby preventing nasal breathing noise and further reducing external noise and conversation leakage. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 10-285261 [Patent Document 2] Japanese Patent Application Publication No. 2018-182645 Summary of the Invention [Problem to be solved by the invention]

[0006] Patent Document 1 has a problem in that it is a pre-formed soundproofing box, which must be prepared for each model, resulting in poor versatility. Furthermore, there is no wall around the mobile phone to block sound, which means that sound collection and soundproofing effects cannot be expected. Patent Document 2 has a manners board in front of the smartphone, which is a mobile terminal, but there is no wall around the smartphone to block sound, which means that sound collection and soundproofing effects cannot be expected.

[0007] These problems (issues) do not preclude the existence of other problems. Furthermore, each aspect of the present invention described below does not necessarily solve all of these problems (issues). Furthermore, other problems (issues) may be identified from the description of the specification, drawings, or claims.

[0008] In view of the above circumstances, the present invention has an object to provide a sound control device for a mobile terminal that has a simple structure and is excellent in both sound collection and sound insulation. [Means for solving the problem]

[0009] As a result of intensive research and development into the above-mentioned problems, the inventors of the present invention have discovered the following revolutionary sound adjustment tool for mobile terminals.

[0010] A first aspect of the present invention for solving the above problem resides in a sound adjustment device for a mobile terminal, characterized by comprising a base for placing a mobile terminal thereon, a pair of side walls on either side of the base that rise in a direction approximately perpendicular to the base, a rear wall on the rear side of the base that rises in a direction approximately perpendicular to the base, the side walls and the rear wall being integrally connected, and the front side opposite the rear side being open.

[0011] Here, "substantially vertical direction" is a concept that includes not only the vertical direction but also directions (angles) close to the vertical direction, and examples thereof include a range of -10° to 10°, preferably a range of -5° to 5°, relative to the vertical direction (when the inside of the sound control device for mobile terminals (the direction in which the mobile terminal is placed) is considered the negative direction and the opposite side is considered the positive direction).

[0012] In this first aspect, when a mobile terminal is placed on the base, it is surrounded on three sides by the side walls and the back wall. Sound emitted toward the mobile terminal is reflected inward by the inner surfaces of the side walls and the back wall and collected, ensuring that even quiet voices can be heard by the mobile terminal. Furthermore, the emitted sound is blocked by the side walls and the back wall, reducing sound leakage to the outside. Furthermore, sound from outside is also blocked, providing soundproofing. As a result, voices can be spoken quietly toward the mobile terminal, reducing concern for those around you and allowing for voice input and conversation with peace of mind. Because the voices can be spoken quietly, the sound adjustment device for a mobile terminal according to this aspect can be used safely in school classrooms, company conference rooms, and other places.

[0013] A second aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that the mobile terminal is placed on the base so that the microphone of the mobile terminal is located at the back.

[0014] In the second aspect, since the microphone of the mobile terminal is positioned at the back, sound emitted from above diagonally downwards towards the back wall is reflected off the back wall and reaches the microphone of the mobile terminal reliably, and sound that spreads to the left and right is also reflected off both side walls and reaches the microphone of the mobile terminal reliably in the same way as if it were reflected off the back wall, so the mobile terminal can reliably recognize the voice even if it is spoken in a very quiet voice.

[0015] A third aspect of the present invention is the sound control device for a mobile terminal according to the first or second aspect, characterized in that the side walls have a first side wall located at the rear side and formed integrally and continuously with the rear wall at the same height as the rear wall, and a second side wall extending from the first side wall toward the front side and having a height shorter than the first side wall.

[0016] In the third aspect, the height of the second side wall is low, so the mouth can be brought closer to the mobile terminal, allowing the mobile terminal to recognize sounds even when spoken in a quieter voice, reducing concerns about those around the user and allowing the user to use the sound adjustment device for a mobile terminal with peace of mind.

[0017] A fourth aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that a reinforcing portion is provided at the lower part of the side wall.

[0018] In the fourth aspect, the side walls have reinforcing portions at the bottom, which stabilize the side walls and prevent the side walls and rear wall from collapsing during use, allowing for safe use.

[0019] A fifth aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that a reinforcing portion is provided over the entire side wall.

[0020] In the fifth aspect, the side walls that rise upward do not collapse during use, providing stable walls. Also, although the side walls may shake when touched by hands during use, they do not collapse, preventing any inconvenience during use.

[0021] A sixth aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that roofs are provided on the upper portions of the side walls and the back wall, projecting forward.

[0022] In the sixth aspect, sound leaking upward is reliably reflected by the roof, improving the sound collection effect and allowing you to speak into the mobile terminal in a quieter voice.

[0023] A seventh aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that a reflecting portion that reflects sound is provided on the base side of the back wall or the side wall.

[0024] According to the seventh aspect, the sound is reflected more effectively by the back wall or the side wall and reaches the microphone of the mobile terminal more reliably, so that the mobile terminal can more reliably recognize the voice even if the voice is uttered in an even quieter voice.

[0025] An eighth aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that a sound insulating part for blocking sound is provided on the rear wall or the side wall opposite the base side.

[0026] According to the eighth aspect, external sounds are blocked by the sound-insulating part, making it difficult for external sounds to reach the microphone of the mobile terminal, and the mobile terminal can reliably recognize the voice even if the voice is spoken in a quieter voice.

[0027] A ninth aspect of the present invention is the sound control device for a mobile terminal according to the third aspect, characterized in that the first side wall is provided with a folding line that bends inward from the rear end of the first side wall toward the upper end of the second side wall.

[0028] In the ninth aspect, after use, the container can be easily folded along the folding line and becomes almost flat, making it easy to store in a bag or the like and easy to carry. When reused, the container can be easily returned to its original shape using the rear wall, making it highly convenient to use.

[0029] A tenth aspect of the present invention is the sound control device for a mobile terminal according to the first aspect, characterized in that the base, side walls, and rear wall are formed by folding along creases drawn on a base on which the shape is printed on both sides.

[0030] In the tenth aspect, the origami is folded along the creases, and can be provided to multiple people at the same time in a classroom or conference room, allowing them to easily create sound adjustment devices for mobile terminals.

[0031] An eleventh aspect of the present invention is the sound control device for a mobile terminal according to the ninth aspect, characterized in that the folds are mainly vertical fold lines and horizontal fold lines. Note that in this case, the shape of the base is, for example, rectangular.

[0032] In the eleventh aspect, the sound adjustment tool for a mobile terminal can be folded quickly with simple movements, so that even children can fold it and it can be used in classes at elementary schools, etc. Furthermore, by providing a base (origami paper), it can be used in conference rooms, etc., and it is possible to provide a sound adjustment tool for a mobile terminal that can be adapted to many situations. [Brief explanation of the drawings]

[0033] [Figure 1]1 is a perspective view showing an example of a first embodiment of a sound adjustment device for a mobile terminal according to the present invention. [Figure 2] FIG. 2 is a development view of a base (origami paper) that is the base of the sound control device for a mobile terminal of FIG. 1. [Figure 3] 2 is a perspective view showing the sound control device for a mobile terminal of FIG. 1 in the middle of being folded. FIG. [Figure 4] 1 is a table showing measurement results of Examples and Comparative Examples. [Figure 5] FIG. 10 is a perspective view showing an example of a second embodiment of a sound adjustment device for a mobile terminal according to the present invention. [Figure 6] FIG. 6 is a development view of a base (origami paper) that is the base of the sound control device for a mobile terminal of FIG. 5. [Figure 7] FIG. 10 is a perspective view showing an example of a third embodiment of a sound control device for a mobile terminal according to the present invention. [Figure 8] FIG. 8 is a development view of a base (origami paper) that is the base of the sound control device for a mobile terminal of FIG. 7. [Figure 9] FIG. 10 is a perspective view showing an example of a fourth embodiment of a sound adjustment device for a mobile terminal according to the present invention. [Figure 10] FIG. 10 is a development view of a base (origami paper) that is the base of the sound control device for a mobile terminal of FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0034] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of a sound control device for a mobile terminal according to the present invention will be described below with reference to the accompanying drawings. However, the present invention is not limited to the following embodiment.

[0035] (First embodiment) 1, the sound control device 1 for a mobile terminal of this embodiment includes a base 2 on which a mobile terminal 20 is placed, a pair of side walls 3 that rise vertically relative to the base 2 and are disposed on both sides of the base 2, and a rear wall 4 that rises vertically relative to the base 2 and is disposed on the rear side of the base 2, and the side walls 3 and the rear wall 4 are integrally connected. The side walls 3 and the rear wall 4 intersect at right angles and are arranged in a U-shape when viewed from above.

[0036] The sound control device 1 for a mobile terminal is used by placing the mobile terminal 20 on a base 2. For ease of explanation, the side that comes to the front when in use will be referred to as the front side, and the side opposite the front side will be referred to as the back side (see FIG. 1).

[0037] Base 2 is surrounded on three sides by both side walls 3 and a rear wall 4, but the front side is open so that mobile terminal 20 can be easily placed on base 2 from the front. Side walls 3 of mobile terminal sound control device 1 have a first side wall 3b on the rear side that is the same height as rear wall 4 and is formed integrally and continuously with rear wall 4, and a second side wall 3a that extends from first side wall 3b toward the front side and is shorter in height than first side wall 3b.

[0038] The mobile terminal 20 is not particularly limited and may be, for example, a smartphone or a tablet, and in this embodiment, it is assumed that a smartphone is used.

[0039] The sound control device 1 for a mobile terminal is shaped using origami paper. As shown in Figure 2, a base 10 is prepared in advance, on which a shape that will become the base of the origami is printed on both sides of a piece of paper, such as A4 or A3 size. The base 10 serves as the base for the origami. The three-dimensional sound control device 1 for a mobile terminal can be created by folding the base 10 along fold lines 11 (vertical fold lines and horizontal fold lines) printed on the base 10 and then applying glue to the glue points 12 and pasting them together.

[0040] Numbers indicating the folding order are printed on the base 10, so anyone can easily fold it in the numerical order to create the sound control device for a mobile terminal 1. There are no particular limitations on the thickness, color, weight, etc. of the base 10 as long as it can be folded, and commercially available copy paper, cardboard, etc. can be used.

[0041] Note that the top of Fig. 2 is the front side of the paper and the bottom side is the back side of the paper, but either side is acceptable. Also, Fig. 2 indicates with parentheses where the base 2, second side wall 3a, first side wall 3b, and rear wall 4 of the mobile terminal sound control device 1 are located on the base 10. Below, the basic layout is the same as in Fig. 2.

[0042] The basic shape of the origami (including pictures, letters, figures, etc.) can be registered (created) in advance in PDF format or the like, and multiple copies can be printed as needed, allowing for flexible provision of the base body 10. As a result, a simple and low-cost sound adjustment device 1 for a mobile terminal can be provided. Furthermore, the material is paper, making it inexpensive and lightweight.

[0043] As shown in FIG. 1, the glued portion 12 has a rectangular region 5 at the bottom of the first side wall 3b of the side wall 3 in the shaped state. Region 5 is a rectangle bounded by the outer surface of the second side wall 3a and an extension line from the top surface of the first side wall 3b toward the rear wall 4. Region 5 is a reinforcing portion P that is thicker than other portions. Specifically, the thickness is greater below a diagonal line 5c connecting the vertex 5a of the bottom surface of the second side wall 3a and the vertex 5b of the boundary of the first side wall 3b. That is, by gluing the glued portion 12 shown in FIG. 2, parts of the base 10 overlap (three layers in the first embodiment), creating thickness and making it stronger than other single-layer portions. The presence of the reinforcing portion P on the side wall 3 side ensures a solid shape and prevents it from easily bending during use.

[0044] Furthermore, the diagonal line 5c of the region 5 is also a folding line 5c along which the first side wall 3b and the second side wall 3a are bent inward. As shown in Fig. 3, when the region 5 is folded along the folding line 5c so that it overlaps with the other, the sound control device 1 for a mobile terminal can be easily folded and stored in a bag or the like. That is, the sound control device 1 for a mobile terminal according to this embodiment can be easily stored and therefore easily carried, and can also be easily reused because it can be reshaped by manually erecting the back wall 4 and the side wall 3.

[0045] Next, the mobile terminal (smartphone) 20 is placed on the base 2. The mobile terminal 20 is placed so that the microphone side of the mobile terminal 20 is positioned on the rear wall 4 side. The tip of the mobile terminal 20 may be in contact with or close to the rear wall 4, but it is preferable to place the mobile terminal 20 with a predetermined space between it and the rear wall 4. By placing the mobile terminal 20 with a predetermined space between it and the rear wall 4, it is possible to collect more sound reflected by the inner surfaces of the rear wall 4 and the side wall 3. The front side of the mobile terminal sound control device 1 is the speaker side and camera side of the mobile terminal 20.

[0046] When the user speaks toward the mobile terminal 20, the sound is reflected by the inner surfaces of the side wall 3 and the back wall 4 and collected inward into the mobile terminal sound control device 1. The sound is then picked up by the microphone, so even a quiet voice can be reliably heard by the mobile terminal 20. In particular, the height of the first side wall 3b and the back wall 4 is higher than that of the second side wall 3a, resulting in a high sound collection effect. Furthermore, the side wall 3 and the back wall 4 reflect the voice inward and reduce sound leakage to the outside, providing a soundproofing effect, allowing the user to speak toward the mobile terminal 20 without worrying about disturbing others.

[0047] Furthermore, because the height of the second side wall 3a is lower than that of the first side wall 3b, the mouth can be brought closer to the microphone of the mobile terminal 20. Furthermore, the forehead can be brought closer to the back wall 4, so the sound collection effect is improved even when speaking softly. At the same time, the side wall 3 and the back wall 4 block (insulate) external sounds, making it possible to more reliably prevent erroneous recognition by the mobile terminal 20.

[0048] In recent years, with the spread of AI, the use of mobile devices 20 with voice input has increased. Voice input is also becoming more common in school classes. Furthermore, calls are now possible on business trains such as the Shinkansen. Voice input and conversation with mobile devices 20 that cause as little disturbance as possible are desired. The sound adjustment device 1 for a mobile device of this embodiment has high sound collection capabilities, reduces sound leakage to the surrounding area, allows the mobile device 20 to be recognized even with a quiet voice, and blocks surrounding sounds, making it highly useful. It is easily foldable and thin, making it easy to carry and usable whenever teleworking or other similar tasks are required. Furthermore, the base body 10 can be easily provided to many people using printing, and can be folded in a short time, allowing the sound adjustment device 1 for a mobile device to be quickly prepared (manufactured).

[0049] <Example> A sound control device for mobile devices shown in Figure 1 was made using A4 copy paper (thickness: 90 μm). The sound volume (average dB) was measured using software (Decibel X) under the following conditions for a case where an iPhone (registered trademark) SE2 was placed on this sound control device for mobile devices (Example) and a case where the sound control device for mobile devices was not used (Comparative Example). Sound source: iPad(R) pro Sound used: Sound Works (school bell) Distance between iPhone® SE2 microphone and sound source: 23 cm The results are shown in Figure 4. In the examples in the figure, "rear" refers to the case where measurements were taken with the sound source placed on the outer surface of the back wall, "side" refers to the case where measurements were taken with the sound source placed on the outer surface of the right wall, and "inner surface" refers to the case where the sound source was placed on the front side and the sound output from the sound source was reflected by the back wall and side walls and collected. The comparative example refers to the case where measurements were taken in the same condition but with the mobile terminal sound control device removed.

[0050] As can be seen from this figure, by using a sound control device for a mobile terminal, it is possible to block external sounds and collect sounds from the front.

[0051] (Second embodiment) The sound control device 1 for a mobile terminal shown in FIG. 5 is the second embodiment, and compared to the first embodiment, the first side wall 3b and the second side wall 3a are thicker and the number of reinforcing members P is increased, resulting in greater strength. Everything except the base 2 and the back wall 4 is made up of several layers. The base 10 in the first embodiment is A4 size, but the base 10 of the second embodiment shown in FIG. 6 is A3 size, with more folded parts and more overlapping parts. For example, the side wall 3 is made up of three layers, and the region 5 is made up of six layers. Apart from the increased number of reinforcing members P, this is basically the same as the first embodiment.

[0052] The fold lines 11 printed on the base 10 are a simple configuration consisting mainly of vertical and horizontal fold lines with some diagonal fold lines 11a, allowing anyone to fold the desired shape in a short amount of time. In the first embodiment, there is one vertical fold and two horizontal folds, while in the second embodiment there is one vertical fold and six horizontal folds, and the main actions are simple vertical and horizontal folds, with several glue points 12, making this an extremely easy origami.

[0053] (Third embodiment) The sound control device for a mobile terminal 1 shown in Figure 7 is a third embodiment. In contrast to the second embodiment, a roof 6 is provided on the upper part of the side wall 3 and the rear wall 4, projecting forward. A fold 11b for vertical folding is provided on the upper part of the base 10 shown in the lower diagram of Figure 8, and the roof 7 can be formed by folding the fold 11b. The roof 6 reflects sound leaking upward, further improving the sound collection ability.

[0054] (Fourth embodiment) The sound control device 1 for a mobile terminal shown in FIG. 9 is a fourth embodiment. In contrast to the first embodiment, this device has a structure that allows the use of a tablet-type personal computer as the mobile terminal 20. The sound control device 1 for a mobile terminal of the fourth embodiment can be formed by folding the base body 10 shown in FIG. 10. While the first to third embodiments are intended for use with a smartphone, the fourth embodiment is intended for use with a tablet-type personal computer, and is longer in width and depth than the first embodiment. Other aspects are the same as the first embodiment.

[0055] (Other embodiments) In the above-described embodiment, nothing is provided on the inner surface of the back wall or side wall (the direction in which the mobile terminal is placed), but a reflective portion that reflects sound may be provided on the inner surface of the side wall or back wall. The reflective portion may be made of any material or have any shape as long as it can reflect sound. Examples of reflective portions include plastic plates. By providing such a reflective portion (attaching or placing a plate-shaped reflective portion on the inner surface of the side wall or back wall), the sound collection and soundproofing effects of the mobile terminal sound control device can be improved. Note that the reflective portion does not need to be provided on the entire inner surface of the back wall or side wall; it is sufficient to provide it on at least a portion.

[0056] Furthermore, in the above-described embodiment, nothing was provided on the outer surface of the wall or side wall (the opposite side from the direction in which the mobile terminal is placed), but a sound-blocking portion that blocks sound may be provided on the outer surface of the side wall or rear wall (a plate-shaped sound-blocking portion may be attached or placed on the outer surface of the side wall or rear wall). The sound-blocking portion is not particularly limited as long as it can block sound, and examples include commercially available plate-shaped insulating materials and sound-absorbing materials. Because the sound-blocking portion blocks external sound, external sound is less likely to reach the microphone of the mobile terminal, and the mobile terminal can reliably recognize the voice even if the voice is spoken in a quieter voice. Note that the sound-blocking portion does not need to be provided on the entire outer surface of the rear wall or side wall; it may be provided on at least a portion.

[0057] Furthermore, although paper is used as the substrate in the above-described embodiment, the present invention is not limited to this. For example, metal, plastic, cardboard, etc. may be used as the substrate.

[0058] The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. In addition, the material, shape, dimensions, numerical values, form, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention. [Explanation of symbols]

[0059] 1. Sound adjustment tool for mobile devices 2 pedestal 3 side wall 3a 2nd side wall 3b 1st side wall 4 Back wall 5 areas 5c Diagonal (folding line) 6. Roof 10 Base 11 fold 11a Diagonal fold 11b Vertical fold crease 12 Glue points 20 Mobile devices P strength part

Claims

1. a base on which the mobile terminal is placed; a pair of side walls extending substantially perpendicularly to the base on both sides of the base; a rear wall rising on a rear side of the base in a direction substantially perpendicular to the base; The side wall and the rear wall are integrally connected, The front side opposite to the back side is open, A mark indicating a placement position of a microphone of the mobile terminal is displayed on the rear side of the base. Sound adjustment tool for mobile devices.

2. The mobile terminal is placed on the base so that a microphone of the mobile terminal is located at the rear side. The sound control device for a mobile terminal according to claim 1.

3. The side wall includes a first side wall located on the rear side and integrally formed with the rear wall at the same height as the rear wall; a second side wall extending from the first side wall toward the front side and having a height lower than that of the first side wall, The sound control device for a mobile terminal according to claim 1 or 2.

4. A reinforcing portion is provided at the lower portion of the side wall. The sound control device for a mobile terminal according to claim 1.

5. A reinforcing portion is provided over the entire side wall. The sound control device for a mobile terminal according to claim 1.

6. A base for placing a mobile terminal; a pair of side walls extending substantially perpendicularly to the base on both sides of the base; a rear wall rising on a rear side of the base in a direction substantially perpendicular to the base; The side wall and the rear wall are integrally connected, The front side opposite to the back side is open, A roof is provided on the upper part of the side wall and the rear wall, extending toward the front side. Sound adjustment tool for mobile devices.

7. A reflective portion that reflects sound is provided on the rear wall or the side wall on the base side.

2. The sound control device for a mobile terminal according to claim 1.

8. a sound-insulating portion for blocking sound is provided on the rear wall or the side wall opposite to the base side; 2. The sound control device for a mobile terminal according to claim 1.

9. A base for placing a mobile terminal; a pair of side walls extending substantially perpendicularly to the base on both sides of the base; a rear wall rising on a rear side of the base in a direction substantially perpendicular to the base; The side wall and the rear wall are integrally connected, The front side opposite to the back side is open, The side wall includes a first side wall located on the rear side and integrally formed with the rear wall at the same height as the rear wall; a second side wall extending from the first side wall toward the front side and having a height lower than that of the first side wall, The first side wall is provided with a folding line that bends inward from the rear end of the first side wall toward the upper end of the second side wall. Sound adjustment tool for mobile devices.

10. The base, the side walls, and the rear wall are formed by folding along creases drawn on a base on which a shape is printed on both sides. The sound control device for a mobile terminal according to claim 9.

11. The fold lines are mainly vertical fold lines and horizontal fold lines. The sound control device for a mobile terminal according to claim 9.

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