JP2020136963A - Wearable speaker system - Google Patents

Abstract

To reduce discomfort and unpleasantness caused to a user.SOLUTION: A wearable speaker system 100 includes: a speaker unit 102; and a bass reflex duct 111 communicating with an interior of the speaker unit 102 at one end part and contained at the interior of an enclosure 101. An opening part 103 is provided at the enclosure 101 and the other end part of the bass reflex duct is contained at the interior of the enclosure 101.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wearable speaker system that is worn and used by a user on a part of the body other than the ear.

In a speaker system, a large-diameter speaker or headphones may be used to obtain a sense of presence. However, when using a speaker system having a large-diameter speaker, a certain amount of space is required. Further, when headphones are used, since the headphones are used so as to sandwich both ears of the user, a feeling of fatigue is given to the user when the usage time is long.

Therefore, Patent Documents 1 and 2 describe a wearable speaker system that is worn on the user's body and used without blocking the user's ears. For example, Patent Document 1 describes a wearable speaker system including a U-shaped enclosure, in which an opening is provided in the enclosure, and the opening is an end portion of a bass reflex duct. Further, Patent Document 2 describes a wearable speaker system in which a wearable speaker system is configured by a speaker unit and a bellows cylinder, and the insides of the speaker unit and the bellows cylinder are communicated with each other.

Japanese Unexamined Patent Publication No. 2018-148479 (published on September 20, 2018) Japanese Unexamined Patent Publication No. 2018-148480 (published on September 20, 2018)

However, the above-mentioned prior art has the following problems. In the techniques described in Patent Documents 1 and 2, the end of the bass reflex duct serves as the opening of the enclosure as it is, and the wind noise accompanying the output from the bass reflex duct is directly output to the outside, which makes the user uncomfortable. It may give a feeling of strangeness.

One aspect of the present invention has been made in view of the above problems, and an object of the present invention is to realize a wearable speaker system that suppresses discomfort and discomfort given to the user.

In order to solve the above problems, the wearable speaker system according to one aspect of the present invention is a wearable speaker system having a U-shaped enclosure, and one of the speaker unit and one end thereof is inside the speaker unit. A bass reflex duct that communicates with the enclosure and is housed inside the enclosure, the enclosure is provided with an opening, and the other end of the bass reflex duct is inside the enclosure. It is characterized by being stored in.

According to one aspect of the present invention, since the end of the bass reflex duct is not an opening of the enclosure, the wind noise output from the bass reflex duct is not directly output from the enclosure. As a result, it is possible to prevent the user from directly hearing the wind noise, and it is possible to prevent the user from being uncomfortable or uncomfortable.

It is a figure which shows the outline of the wearable speaker system which concerns on embodiment of this invention, (a) is the front view of the wearable speaker system, and (b) is the perspective view. It is a figure for demonstrating the use example of the said wearable speaker system. It is the schematic for demonstrating the internal structure of the enclosure of the said wearable speaker system. It is the schematic for demonstrating the internal structure of the enclosure of the said wearable speaker system. It is the schematic for demonstrating the internal structure of the enclosure of the said wearable speaker system. In the above wearable speaker system, it is a figure for demonstrating how air enters and exits through an opening through an end of a bass reflex duct, and is a view seen from the outer surface of the enclosure, (b) is the inside of the enclosure. It is a figure which shows, (c) is the inside of an enclosure, and is the state which shows the state which removed the bellows tube. In this embodiment, it is a figure which shows the relationship between the bass reflex duct to which the weight is attached, and the bellows cylinder. It is a figure which shows the relationship between a bass reflex duct and a weight in this embodiment, (a) is a side view, and (b) is a perspective view. It is a figure which shows the relationship between the bellows cylinder and the bass reflex duct in this embodiment, (a) is the figure which shows the example of inserting a bass reflex duct into a bellows cylinder from the right direction, (b) is the figure which shows the bass reflex from the wrong direction. It is a figure which shows the example which inserts a duct into a bellows cylinder. (A) and (b) are diagrams for explaining the advantages due to the difference in the diameters of both ends of the bellows cylinder in the present embodiment. It is a figure which shows the detail of the fixed part of the bass reflex duct in this embodiment, (a) is the side view of the state which the bass reflex duct which attached the weight is inserted in the bellows cylinder, (b) is (b). It is a figure which shows the state which expanded the D area of a) and removed the weight.

[Overall configuration of wearable speaker system 100]
Hereinafter, one embodiment of the present invention will be described in detail. First, an outline of the wearable speaker system 100 according to the present embodiment will be described with reference to FIG. 1A and 1B are views showing an outline of a wearable speaker system 100, FIG. 1A is a front view of the wearable speaker system 100, and FIG. 1B is a perspective view. The bellows tube 110, the bass reflex duct (duct tube) 111, and the weight (cone) 112 shown in FIG. 1 are housed inside the enclosure 101 and cannot be seen from the outside, and are therefore shown by broken lines. ..

In the present embodiment, in the wearable speaker system 100, the direction in which sound is output from the speaker unit 102, that is, the direction toward the user's ear during use is the Y direction, from the right speaker (speaker unit 102R) of the speaker unit 102. The direction of the left speaker (speaker unit 102L) is the X direction, and the directions orthogonal to the X direction and the Y direction are the Z direction. Further, the surface of the wearable speaker system 100 viewed in the −Y direction is referred to as a front surface.

As shown in FIGS. 1A and 1B, the wearable speaker system 100 includes an enclosure 101. The enclosure 101 has a substantially U-shape (U-shape) when viewed from the front. The shape of the enclosure 101 when viewed from the front can also be expressed as a horseshoe shape, an inverted U shape, or the like. The enclosure 101 includes a portion extending in the Z direction from the central portion in the ± X direction (neck rear portion 101A) and a portion extending in the Z direction from the end portion of the neck rear portion (neck lateral portion 101B).

The rear neck portion 101A is made of a flexible member. The wearable speaker system 100 can be easily worn around the user's neck by slightly bending the rear neck portion 101A when worn by the user. On the other hand, the neck lateral portion 101B is composed of a member that is harder than the neck rear portion 101A.

Further, the speaker unit 102 is provided at the end of the enclosure 101. The side corresponding to the right ear of the user is referred to as the speaker unit 102R during use, the side corresponding to the left ear is referred to as the speaker unit 102L, and when it is not necessary to distinguish between the two, it is simply referred to as the speaker unit 102.

Since the speaker unit 102 can be realized by a known technique, detailed description thereof will be omitted, but the speaker unit 102 has a speaker having an opening in the Y direction, and the speaker includes a frame, a magnetic circuit, a diaphragm, etc. (not shown). included.

The openings 103 are openings provided in the enclosure 101, and in the present embodiment, four circular openings 103 are provided along the enclosure 101 on the inner side surface of the neck lateral portion 101B of the enclosure 101. The radius of the circle increases toward the portion 101A. The openings 103 are provided in the left and right neck lateral portions 101B of the enclosure 101, and the side corresponding to the speaker unit 102R is the opening 103R and the side corresponding to the speaker unit 102L is the opening 103L. When it is not necessary to distinguish between the two, the opening 103 is simply referred to. Further, the shape and number of the openings 103 are examples, and the number is not limited to a circle, and the number is not limited to four.

A bellows cylinder 110 is provided in the neck lateral portion 101B of the enclosure 101 provided with the opening 103. Therefore, it can be said that the opening 103 is provided at a position corresponding to the bellows cylinder 110 of the enclosure 101.

Next, a usage example of the wearable speaker system 100 will be described with reference to FIG. FIG. 2 is a diagram for explaining a usage example of the wearable speaker system 100. As shown in FIG. 2, in the wearable speaker system 100, the rear neck portion 101A of the enclosure 101 is positioned behind the user's neck, and the side neck portion 101B of the enclosure 101 is positioned from diagonally rearward of the user's neck to both sides of the neck. It is used by hanging it around the neck so that it is positioned diagonally forward to the left and right. As a result, the sound output from the speaker unit 102 reaches the user's ear appropriately. In addition, since the wearable speaker system 100 does not directly block the user's ears, it is possible to suppress the user from feeling tired as well as using the conventional headphones.

Next, the internal structure of the enclosure 101 will be described with reference to FIGS. 3 to 5. 3 to 5 are schematic views for explaining the internal structure of the enclosure 101. It should be noted that FIGS. 3 to 5 mainly show the members necessary for the description of the invention, and do not show all the members included in the enclosure 101. 3 is a view of the inside of the enclosure 101 from the front (Y direction), FIG. 4 is a view of the inside of the enclosure 101 from the side surface (X direction), and FIG. 5 is a view of the enclosure 101. It is a figure which looked at the inside of the from the opposite side (-Y direction).

As shown in FIGS. 3 to 5, inside the enclosure 101, the inside of the speaker unit 102 is connected to the end of the bellows cylinder 110 and the end of the bass reflex duct 111. Further, the bass reflex duct 111 has a tubular shape, and a weight 112 is attached to the central portion, and the weight 112 is held at substantially the center of the bellows cylinder 110.

Further, a sound absorbing material 104 is provided at an end of the bass reflex duct 111 opposite to the speaker unit 102.

Note that FIGS. 3 to 5 show one end of the wearable speaker system 100, and the other end has the same configuration.

The bellows tube 110 and the bass reflex duct 111 are inside the enclosure 101, more specifically behind the neck of the neck lateral portion 101B so that one end is on the speaker unit 102 side and the other end is on the neck rear portion 101A side. It is arranged closer to the portion 101A. Both ends of the bellows cylinder 110 are fixed by fixing portions formed on the inner surface of the enclosure 101. The bellows cylinder 110 is a bellows-shaped cylinder, and a valley fold and a mountain fold are repeated on the side surface. Since the valley fold and the mountain fold are repeated on the side surface, the bellows cylinder 110 can be expanded and contracted. Further, the substantially center of the bellows cylinder 110 includes a portion having a length substantially the same as the length of the weight 112 and in which valley folds and mountain folds are not formed so that the weight 112 can be held.

In this way, by connecting the inside of the speaker unit 102, the end of the bellows cylinder 110, and the end of the bass reflex duct 111 inside the enclosure 101, the fluctuation of the air pressure in the speaker unit 102 becomes the inside of the enclosure 101. It is transmitted to the bellows tube 110 and the bass reflex duct 111 through the space. Due to this fluctuation in air pressure, the weight 112 attached to the bass reflex duct 111 vibrates in the bellows cylinder 110. Then, the enclosure 101 vibrates due to this vibration. As a result, the enclosure 101 vibrates according to the output from the speaker unit 102, that is, the sound output from the speaker unit 102, so that the user can feel the vibration according to the output sound. .. In other words, it is possible to give the user a sense of presence.

Further, the end portion of the bass reflex duct 111 opposite to the speaker unit 102 is open to the rear neck portion 101A side of the enclosure 101. This opening leads to the opening 103 through the internal space of the enclosure 101. As a result, when the pressure inside the enclosure 101 fluctuates according to the vibration of the diaphragm of the speaker unit 102, the pressure inside the bass reflex duct 111 fluctuates, and the bass reflex is passed through the opening 103 through the end of the bass reflex duct 111. The sound based on the output from the duct 111 will be output. Of the pressure fluctuations inside the speaker unit 102 generated by the diaphragm, the high-frequency component is transmitted to the bass reflex duct 111 while being attenuated more than the low-frequency component. Therefore, the output from the bass reflex duct 111 mainly depends on the magnitude of the low-frequency component. It will be according to. Therefore, the sound output from the opening 103 also mainly corresponds to the low frequency component. As a result, the user can feel the bass from the output of the opening 103.

Next, with reference to FIG. 6, the reason why the wind noise due to the output from the bass reflex duct 111 becomes difficult to reach the user will be described. FIG. 6 is a diagram for explaining how air enters and exits through the opening 103 through the end of the bass reflex duct 111. FIG. 6A is a view seen from the outer surface of the enclosure 101, FIG. 6B is a view showing the inside of the enclosure 101, and FIG. 6C is a view showing the inside of the enclosure 101 and the bellows tube 110. It is a figure which shows the removed state.

In the prior art, the opening 103 is the end of the bass reflex duct 111. On the other hand, as shown in FIG. 6, in the present embodiment, the opening 103 and the end of the bass reflex duct 111 are connected to each other via the inside of the enclosure 101. Therefore, the air emitted from the end portion of the bass reflex duct 111 exits from the opening 103 through the inside of the enclosure 101 as shown by the broken line arrow in FIG. As a result, it is possible to prevent the user from directly hearing the wind noise from the bass reflex duct 111 as in the prior art. Further, in the present embodiment, the sound absorbing material 104 is provided at the end of the bass reflex duct 111. As a result, it is possible to further suppress that the wind noise from the bass reflex duct 111 is heard by the user.

As described above, the wearable speaker system 100 according to the present embodiment is a wearable speaker system 100 having a U-shaped enclosure 101, and one of the speaker unit 102 and one end thereof is inside the speaker unit 102. A bass reflex duct 111 that communicates with the enclosure 101 and includes a bass reflex duct 111 that is housed inside the enclosure 101. The enclosure 101 is provided with an opening 103, and the other end of the bass reflex duct 111. Is stored inside the enclosure 101.

[Details of bellows tube 110, bass reflex duct 111, weight 112]
Next, the details of the bellows cylinder 110, the bass reflex duct 111, and the weight 112 will be described with reference to FIGS. 7 to 11.

FIG. 7 is a diagram showing the relationship between the bass reflex duct 111 to which the weight 112 is attached and the bellows cylinder 110. A stopper (holding portion) 115 and a stopper 116 for holding the weight 112 are provided at substantially the center of the inside of the bellows cylinder 110. The stopper 115 has a longer length toward the center of the diameter of the bellows cylinder 110 than the stopper 116. As a result, when the bass reflex duct 111 to which the weight 112 is attached is inserted in the correct direction, that is, in the direction from the stopper 116 to the stopper 115, the weight 112 passes through the stopper 116 and is securely held by the stopper 115. Further, in the held state, the weight 112 is also held by the stopper 116. Further, the weight 112 is held inside the bellows cylinder 110 so that its side surface is in contact with the inner surface of the bellows cylinder 110.

8A and 8B are views showing the relationship between the bass reflex duct 111 and the weight 112, FIG. 8A is a side view seen from the side, and FIG. 8B is a perspective view seen from an angle. As shown in FIG. 8, the weight 112 has a cylindrical shape with an opening in the center. In other words, an opening is provided in the axial direction of the cylindrical shape. When the bass reflex duct 111 penetrates the opening, the weight 112 is held by the fixed portion of the bass reflex duct 111. In the example shown in FIG. 8, a cylindrical shape is formed by combining a plurality of disk-shaped weights, but the present invention is not limited to this. As shown in FIG. 8, the bass reflex duct 111 has a fixed portion larger than the radius of the opening of the weight 112 and a tapered insertion portion whose radius increases from the end toward the center in order to hold the weight 112. And have. The radius of the taper-shaped fixed portion side is slightly larger than the radius of the opening of the weight 112. As a result, the weight 112 can be easily inserted into the bass reflex duct 111, and once inserted, the weight 112 can be reliably held by the fixing portion and the inserting portion.
Since the weight 112 is fixed by the fixing portion and the inserting portion, these can be collectively referred to as a pair of fixing portions.

FIG. 9 is a diagram showing the relationship between the bellows cylinder 110 and the bass reflex duct 111. FIG. 9A is a diagram showing an example of inserting the bass reflex duct 111 into the bellows cylinder 110 from the correct direction, and FIG. 9B is a diagram showing an example of inserting the bass reflex duct 111 into the bellows cylinder 110 from the wrong direction. is there.

As shown in FIG. 9, the diameter A of the fixed portion of the bass reflex duct 111 and the diameters B and C of the end portions of the bellows cylinder 110 are all different in length, and the relationship is B> A> C. There is. That is, the diameters of both ends of the bellows cylinder 110 are different, and the diameter of the fixed portion of the bass reflex duct 111 is between the diameters of both ends of the bellows cylinder 110. As a result, the bass reflex duct 111 can be inserted into the bellows tube 110 from the end having a radius of B, but cannot be inserted from the end having a radius of C. As a result, it is possible to prevent the bass reflex duct 111 from being inserted from the wrong direction (see FIG. 9B).

FIG. 10 is a diagram for explaining the advantages of different diameters at both ends of the bellows cylinder 110. As shown in FIG. 10A, the diameter of the end of the bellows cylinder 110 opposite to the speaker unit 102 is reduced so that when the bellows cylinder 110 is arranged on the curved surface portion of the enclosure 101, the enclosure 101 It is preferable because it can avoid contact with (see the region shown by the broken line in FIG. 10B). Since the amplitude of the same end portion is smaller than that of the central portion, even if the diameter of the end portion is reduced, the influence on the vibration performance of the bellows cylinder 110 as a whole is small.

11A and 11B are views showing the details of the fixed portion of the bass reflex duct 111, and FIG. 11A is a side view showing a state in which the bass reflex duct 111 to which the weight 112 is attached is inserted into the bellows cylinder 110, and (b). ) Is a diagram showing a state in which the D region of (a) is enlarged and the weight 112 is removed.

As shown in FIG. 11B, the surface of the fixed portion of the bass reflex duct 111 on the side where the weight 112 comes into contact has a concave shape that curves toward the weight 112 side as it goes outward in the radial direction. .. The air based on the fluctuation of the atmospheric pressure due to the diaphragm of the speaker unit 102 travels inside the bellows cylinder 110 and tries to travel between the bass reflex duct 111 and the weight 112 as shown by the arrow in FIG. 11 (a). Here, if the fixed portion of the bass reflex duct 111 has a concave shape as in the present embodiment, the degree of adhesion between the fixed portion of the bass reflex duct 111 and the weight 112 is increased, and the space between the bass reflex duct 111 and the weight 112 is increased. It becomes difficult for the air to move. As a result, it is possible to prevent air from leaking from between the bass reflex duct 111 and the weight 112, and it is possible to reliably vibrate the weight 112 based on the fluctuation of the atmospheric pressure due to the diaphragm of the speaker unit 102.

[Summary]
The wearable speaker system 100 according to the first aspect of the present invention is a wearable speaker system 100 having a U-shaped enclosure 101, and a bass reflex in which one of the speaker unit 102 and one end communicates with the inside of the speaker unit 102. The duct 111 includes a bass reflex duct 111 housed inside the enclosure 101, the enclosure 101 is provided with an opening 103, and the other end of the bass reflex duct 111 is the enclosure. It is characterized in that it is stored inside the 101.

According to the above configuration, since the end of the bass reflex duct is not an opening of the enclosure, the wind noise output from the bass reflex duct is not directly output from the enclosure. As a result, it is possible to prevent the user from directly hearing the wind noise, and it is possible to prevent the user from feeling uncomfortable or uncomfortable.

In the wearable speaker system 100 according to the second aspect of the present invention, in the first aspect, the opening 103 may be provided on the U-shaped inner side surface of the enclosure 101.

According to the above configuration, it is possible to make the user recognize the output of the bass range from the bass reflex duct while suppressing the user from directly hearing the wind noise.

In the wearable speaker system 100 according to the third aspect of the present invention, in the first or second aspect, the sound absorbing material 104 may be provided at an end of the bass reflex duct 111 that does not communicate with the inside of the speaker unit 102.

According to the above configuration, it is possible to further suppress the wind noise from the bass reflex duct from being heard by the user.

In the wearable speaker system 100 according to the fourth aspect of the present invention, in any one of the first to third aspects, the enclosure 101 is provided with a bellows tube 110 that communicates with the speaker unit 102 inside, and the bass reflex duct 111. Is provided so as to penetrate the bellows cylinder 110, and the opening 103 may be provided at a position corresponding to the bellows cylinder 110 of the enclosure 101.

According to the above configuration, since the opening is located away from the end of the bass reflex duct, it is possible to prevent the user from directly hearing the wind noise, and the bass reflex to the user. The user can recognize the bass output from the duct.

In the wearable speaker system 100 according to the fifth aspect of the present invention, in any one of the first to fourth aspects, the plurality of openings 103 are provided, and the size increases as the distance from the end of the enclosure 101 increases. You may.

According to the above configuration, it is possible to prevent the user from directly hearing the wind noise, and it is possible to make the user recognize the output of the bass range from the bass reflex duct.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

100 Wearable Speaker System 101 Enclosure 102 (102L, 102R) Speaker Unit 103 (103L, 103R) Opening 104 Sound Absorbing Material 110 Bellows Tube 111 Bass Reflex Duct (Duct Tube)
112 Weight (cone)
115, 116 Stopper (holding part)

Claims (5)

A wearable speaker system with a U-shaped enclosure.
With the speaker unit
One of the ends is a bass reflex duct that communicates with the inside of the speaker unit, and includes a bass reflex duct that is stored inside the enclosure.
A wearable speaker system characterized in that the enclosure is provided with an opening and the other end of the bass reflex duct is housed inside the enclosure. The wearable speaker system according to claim 1, wherein the opening is provided on a U-shaped inner side surface of the enclosure. The wearable speaker system according to claim 1 or 2, wherein a sound absorbing material is provided at an end of the bass reflex duct that does not communicate with the inside of the speaker unit. Inside the enclosure, a bellows tube that communicates with the speaker unit inside is provided.
The bass reflex duct is provided so as to penetrate the bellows tube.
The wearable speaker system according to any one of claims 1 to 3, wherein the opening is provided at a position corresponding to the bellows cylinder of the enclosure. The wearable speaker system according to any one of claims 1 to 4, wherein a plurality of the openings are provided and the size increases as the distance from the end of the enclosure increases.

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