JP6975763B2 - Information equipment and its manufacturing method - Google Patents

Description

The present invention relates to an information device having a speaker in a housing and a method for manufacturing the same.

Information devices such as notebook-type personal computers (hereinafter referred to as notebook-type PCs) and tablet-type PCs may be provided with a speaker in a main body housing including a keyboard or a touch panel. The main body housing is provided with an acoustic hole for outputting the sound of the speaker to the outside. A large number of acoustic holes are provided according to the area of the speaker. From a design point of view, a layout relationship with the keyboard, and for the purpose of preventing foreign matter from entering, the acoustic hole may be formed at the bottom of the main body housing, and the speaker may be arranged downward in accordance with this (for example). , Patent Document 1). Generally, the speaker and the acoustic hole are provided along the edge of the main body housing. Generally, in the case of resin molding of the main body housing and the acoustic hole, after filling the cavity with resin, the two molds are separated in the vertical direction to open the mold.

Japanese Unexamined Patent Publication No. 10-69369

Recently, mobile terminals are becoming thinner. Further, from the viewpoint of design, the lower surface of the edge portion of the main body housing may be inclined to make the end of the main body housing thinner. In this case, when the speaker is arranged downward along the edge of the main body housing, at least a part thereof is located above the inclined portion of the main body housing. Then, at least a part of the acoustic hole needs to be formed in the inclined portion. When the main body housing and the acoustic hole are formed by resin molding, since the two molds are opened in the vertical direction, the acoustic hole also has a shape that uniformly penetrates in the vertical direction.

However, if the acoustic hole penetrates the inclined plate in the vertical direction, the sound cannot pass smoothly depending on the direction of the speaker, resulting in a so-called trapped sound. Also, since the sound of the speaker is basically diffused radially, if the acoustic holes are in a uniform penetration direction, the sound can pass smoothly in a specific direction, but the acoustic holes in other directions. The sound quality deteriorates because it is blocked to some extent by the part.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an information device capable of improving the sound quality of a speaker and a method for manufacturing the same.

In order to solve the above-mentioned problems and achieve the object, the information device according to the first aspect of the present invention is an information device having a speaker in a housing having an upper cover and a lower cover, and the lower cover is A bottom plate that is a mounting portion, an inclined plate that inclines upward from the bottom plate toward the edge of the housing, and a plurality of acoustic holes provided in the inclined plate, and the acoustic holes are inclined. It penetrates perpendicularly to the plate, and the speaker unit of the speaker is arranged above the plurality of acoustic holes.

In such an information device, since the acoustic hole penetrates perpendicularly to the inclined plate provided therein, the sound of the speaker easily passes through, and the sound quality can be improved without becoming a so-called clogged sound. Further, since a gap is secured between the inclined plate and the mounting surface, the sound passing through the acoustic hole of the inclined plate is guided to the side of the main body housing, and is easy for the user to hear.

The acoustic hole is provided from the bottom plate to the inclined plate, and the acoustic hole in the bottom plate may penetrate perpendicularly to the bottom plate. This allows the speakers to be placed above them from the bottom plate to the tilt plate.

The diaphragm of the speaker unit may be arranged according to the average inclination angle of the portion of the lower cover facing the speaker unit. This makes it easier for the sound of the speaker to pass through the acoustic hole.

The inclined plate is a flat plate, and the bottom plate and the inclined plate may be connected to each other via a bent portion. The inclined plate can be easily formed by the bent portion.

The bottom plate and the inclined plate are connected to each other via a bent portion, and the distance between the acoustic holes adjacent to each other via the bent portion between the bottom plate and the inclined plate is such that the adjacent acoustic holes in the bottom plate. It may be larger than the distance between the above and the adjacent acoustic holes in the inclined plate. As a result, it is easy to form a bent portion, and sufficient strength is maintained.

The bottom plate and the inclined plate may be one metal plate.

The acoustic hole may be circular.

The method for manufacturing an information device according to a second aspect of the present invention is a method for manufacturing an information device in which a speaker is provided in a housing having an upper cover and a lower cover, and a plurality of acoustic holes are formed in a metal plate. In the process, the metal plate is bent at a position including a region where a plurality of the acoustic holes are formed, and a bottom plate as a mounting portion and an inclined plate inclined upward from the bottom plate toward the edge of the housing. It has a step of forming and a step of arranging the speaker unit on the upper part of the plurality of acoustic holes.

According to the method for manufacturing such an information device, a bottom plate as a mounting portion, an inclined plate inclined upward from the bottom plate toward the edge of the main body housing, and a plurality of acoustic holes are formed in the inclined plate. be able to. Further, the acoustic hole can be formed so as to penetrate perpendicularly to the bottom plate and the inclined plate depending on the position.

According to the above aspect of the present invention, since the acoustic hole penetrates perpendicularly to the inclined plate provided therein, the sound of the speaker can easily pass through and the sound quality can be improved.

FIG. 1 is a plan view of an information device according to an embodiment. FIG. 2 is a bottom view of the information device according to the embodiment. FIG. 3 is a schematic front sectional view taken along the line III to III in FIG. 1. FIG. 4 is a partially enlarged schematic front sectional view of FIG. FIG. 5 is a partially enlarged bottom view of FIG. 2. 6A and 6B are views showing an information device according to a modified example, FIG. 6A is a partially enlarged cross-sectional front view of the information device according to the first modified example, and FIG. 6B is a second modified example. It is a partially enlarged sectional front view of an information device. FIG. 7 is a flowchart showing a method of manufacturing an information device. 8A and 8B are diagrams for explaining a manufacturing process of an information device, FIG. 8A is a diagram for explaining an acoustic hole forming process, and FIG. 8B is a diagram for explaining a bending process.

Hereinafter, embodiments of the information device and the manufacturing method thereof according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment.

FIG. 1 is a plan view of the information device 10 according to the embodiment, and specifically, is a view looking down on the information device 10 in which the display housing 18 is opened from the main body housing 14 by the hinge 20 and used as the usage mode. Is. In this embodiment, a notebook PC is exemplified as the information device 10. The information device 10 may be, for example, a tablet PC, a smartphone, or the like.

Hereinafter, based on the direction in which the display device 16 of the information device 10 as shown in FIG. 1 is visually recognized from the front, the front side of the main body housing 14 is the front side, the back side is the rear side, and the thickness direction is the vertical direction and the width direction. Is called left and right to explain. It should be noted that these directions are for convenience of explanation. Therefore, for example, the above-mentioned vertical direction and horizontal direction may be reversed depending on the usage mode, installation posture, and the like. Further, when the information device 10 is a tablet type PC, the display surface side is upward.

As shown in FIG. 1, the information device 10 includes a main body housing 14 having a keyboard device 12 and a display housing 18 having a display device 16. The display housing 18 is rotatably connected to the rear end of the main body housing 14 via a pair of left and right hinges 20, 20. The display housing 18 is thin and its frame is thin. The display device 16 is, for example, a liquid crystal display. The hinge 20 is arranged along the rear wall.

The main body housing 14 is a thin box body formed by the upper cover 22 and the lower cover 24. The main body housing 14 has a flat shape and is rectangular in a plan view. The upper cover 22 is a plate-shaped member constituting the upper surface and the four side surfaces of the main body housing 14. When the information device 10 is a tablet PC, the touch panel type display device 16 may also serve as most or all of the upper cover 22.

The lower cover 24 is a member constituting the mounting surface of the main body housing 14. The upper cover 22 is made of a metal plate such as magnesium or a carbon plate. The lower cover 24 is made of a metal plate for pressing such as an aluminum plate.

Speakers 26R and 26L are provided at the front left and right ends inside the main body housing 14. The speakers 26R and 26L can reproduce stereo sound, and are provided substantially downward (see FIG. 4). The speakers 26R and 26L are rectangular shapes that are long in the front-rear direction in a plan view, and are arranged substantially along the end of the main body housing 14. The speakers 26R and 26L are short in the left-right direction but long in the front-back direction, and the area of the diaphragm 46a (see FIG. 4) is secured to be appropriately wide, which is suitable not only for high-pitched sound but also for low-pitched sound output. Instead of the speakers 26R and 26L, the speakers 27R and the speakers 27L may be provided at the left and right ends of the front edge inside the main body housing 14.

FIG. 2 is a bottom view of the information device 10. As shown in FIG. 2, the lower cover 24 of the main body housing 14 has a bottom plate 30 which is a mounting portion, and inclined plates 32a, 32b, which are inclined upward from the bottom plate 30 toward the four edges of the main body housing 14. It is a shallow tray shape with 32c and 32d. The lower cover 24 further includes a hole group 36a, 36b composed of a plurality of acoustic holes 34 provided from the bottom plate 30 to the inclined plates 32a, 32b. The bottom plate 30 and the inclined plates 32a to 32d are obtained from one metal plate, and the number of parts is small and the cost is low.

The inclined plates 32a, 32b, 32c and 32d are provided along the right edge, the left edge, the leading edge and the trailing edge of the lower cover 24 in order. The bottom plate 30 and the inclined plate 32a are connected via a bent portion 38a, the bottom plate 30 and the inclined plate 32b are connected via a bent portion 38b, and the bottom plate 30 and the inclined plate 32c have a bent portion 38c. The bottom plate 30 and the inclined plate 32d are connected via a bent portion 38d. The front inclined plate 32c has a relatively wide width, and the rear inclined plate 32d has a relatively narrow width. The width of the left and right inclined plates 32a and 32b is changed so that the front end portion is relatively wide and the rear end portion is relatively narrow so as to connect the front inclined plate 32c and the rear inclined plate 32d. The bottom plate 30 is a flat plate that occupies most of the lower cover 24, and includes a plurality of rubber feet 40 and a vent 42. The acoustic holes 34 of the hole groups 36a and 36b are separately provided in the first group 44a provided on the bottom plate 30 and the second group 44b provided on the inclined plates 32a and 32b.

The hole groups 36a and 36b are provided at positions corresponding to the speakers 26R and 26L. When speakers 27R and 27L (see FIG. 1) are provided in place of the speakers 26R and 26L, the holes 37a and 37b may be provided at positions corresponding to these as shown by virtual lines. The hole groups 37a and 37b are composed of a plurality of acoustic holes 34 like the hole groups 36a and 36b.

FIG. 3 is a schematic front sectional view taken along the line III to III in FIG. 1. As shown in FIG. 3, the right side wall 22a and the left side wall 22b of the main body housing 14 are a part of the upper cover 22, but a part of the lower cover 24 forms the side walls 22a and 22b depending on the design conditions. You may be doing it. Since the inclined plates 32a and 32b are inclined upward toward the edge of the main body housing 14 on the right side of the bent portion 38a of the lower cover 24 and on the left side of the bent portion 38b, the side walls 22a and 22b are vertically oriented. The width is narrow, and a sharp image effect can be obtained on the design. As described above, the speakers 26R and 26L are provided along the right edge and the left edge of the main body housing 14. The speaker 26R is provided in an upper portion extending from the bottom plate 30 to the inclined plate 32a, and the speaker 26L is provided in an upper portion extending from the bottom plate 30 to the inclined plate 32b. However, when the left-right dimensions of the speakers 26R and 26L are small (for example, in the case of a small size dedicated to high-pitched sound reproduction), the speakers 26R and 26L are arranged only above the inclined plates 32a and 32b and above the bottom plate 30. It does not have to be extended to. In this case, the acoustic hole 34 of the first group 44a can be omitted.

FIG. 4 is a partially enlarged schematic front sectional view of FIG. 3, showing the speaker 26R on the right side and its surroundings. FIG. 5 is a partially enlarged bottom view of FIG. 2, showing the hole group 36a on the right side and its periphery. Since the speaker 26L on the left side and its periphery are symmetrical with FIG. 4, and the hole group 36b on the left side and its periphery are symmetrical with FIG. 5, detailed description thereof will be omitted. However, each part may be slightly asymmetrical on the left and right for reasons such as layout.

As shown in FIG. 4, about half of the speaker 26R is located above the bottom plate 30, and about half of the rest is located above the inclined plate 32a. The upper part of the speaker 26R has a flat plate shape along the inner surface of the upper cover 22. The lower portion of the speaker 26R straddles the hole group 36a and is inclined from the bottom plate 30 to the inclined plate 32a. Therefore, the speaker 26R has a shape in which the vertical width of the left-side portion is long and the vertical width of the right-side portion is short. The upper surface of the speaker 26R is connected to the upper cover 22 via a sponge 50, and the lower surface of the speaker 26R is connected to the lower cover 24 via two sponges 52. One sponge 52 is provided between the left end of the lower surface of the speaker 26R and slightly to the left of the hole group 36a in the bottom plate 30, and the other sponge 52 is located between the right end of the lower surface of the speaker 26R and the hole group 36a in the inclined plate 32a. It is provided between the right side and the right side. The sponges 50 and 52 prevent the vibration of the speaker 26R from propagating to the main body housing 14.

The speaker 26R occupies most of the space between the upper cover 22 and the lower cover 24, and the gap between the side walls 22a is sufficiently narrow, so that the space efficiency in the main body housing 14 is good. The speaker 26R is fixed to the upper cover 22 via, for example, a sponge 50 or an elastic bush (not shown), and by attaching the lower cover 24 to the upper cover 22 in that state, the sponge 52 is compressed and stabilized.

The speaker 26R has a speaker unit 46 and a speaker box 48. The speaker unit 46 generates sound by the vibration of the diaphragm 46a. The speaker box 48 is a part generally called a cabinet or an enclosure, and an appropriate volume is secured so as to reverberate the low-pitched sound emitted by the speaker unit 46. Further, the speaker box 48 has a hollow 49 in a portion other than the speaker unit 46, and functions as a back chamber of the speaker unit 46 to improve sound quality.

The left and right ends of the speaker unit 46 are fixed to the mounting seats 48a and 48b of the speaker box 48, respectively. Since the opening formed on the lower surface of the speaker box 48 is closed by the speaker unit 46, the speaker 26R forms a sealed speaker. However, depending on the specifications, for example, a back load horn type or a bass reflex type may be used.

The speaker unit 46 is arranged so as to be inclined with respect to the bottom plate 30. Specifically, the diaphragm 46a of the speaker unit 46 (when the diaphragm 46a is not a flat surface, a line segment connecting both ends in the cross-sectional view) is the average inclination angle of the portion of the lower cover 24 where the speaker unit 46 faces. It is arranged according to. In this case, it is the average inclination angle between the bottom plate 30 and the inclined plate 32a, in other words, it is 1/2 of the inclination angle of the inclined plate 32a. Although the average tilt angle in the present application is not strict and accurate, it may be a substantially average tilt angle to the extent that the effect that the sound of the speaker unit 46 easily passes through the acoustic hole 34 can be obtained. Further, the center line J of the diaphragm 46a intersects with the bent portion 38a. The gap g between the left end of the lower surface of the diaphragm 46a and the bottom plate 30 and the gap g between the right end of the lower surface and the inclined plate 32a are equal. The distance d between the left end of the lower surface of the diaphragm 46a and the nearest acoustic hole 34 and the distance d between the right end of the lower surface and the nearest acoustic hole 34 are equal.

As described above, the plurality of acoustic holes 34 constituting the hole group 36a are separately provided in the first group 44a formed on the bottom plate 30 and the second group 44b formed on the inclined plate 32a. The acoustic holes 34 are all the same circular shape, but the inclination angles are different between those provided in the first group 44a and those provided in the second group 44b. That is, the acoustic hole 34 of the first group 44a penetrates perpendicularly to the extending surface of the bottom plate 30 and is parallel to the vertical direction of the main body housing 14. The acoustic hole 34 of the second group 44b penetrates perpendicularly to the extending surface of the inclined plate 32a and is inclined according to the inclination angle of the inclined plate 32a. Since the acoustic hole 34 is circular, it is easy to form, but it may have another shape, for example, a rectangle depending on the design conditions.

In the inclined plate 32a, at least the region of the second group 44b in which the acoustic hole 34 is provided is a flat plate, and the bottom plate 30 and the inclined plate 32a are connected to each other via a bent portion 38a. Such a shape can be easily processed because it can be obtained only by forming the bent portion 38a with respect to the flat plate of the base material.

As shown in FIG. 5, a large number of acoustic holes 34 of the first group 44a of the bottom plate 30 and the second group 44b of the inclined plate 32a are provided side by side vertically and horizontally over almost the entire surface facing the speaker 26R. The vertical and horizontal spacing p1 of the adjacent acoustic holes 34 in the first group 44a and the vertical and horizontal spacing p2 of the adjacent acoustic holes 34 in the second group 44b are both set sufficiently small, and a plurality of acoustics in these regions are set. The aperture ratio of the holes 34 is high, and the sound of the speaker 26R can easily pass through. The interval p1 and the interval p2 may be set equally. Although the acoustic hole 34 of the second group 44b in FIG. 5 is a slightly vertically long ellipse, it is a perfect circle when viewed from the plane perpendicular direction of the inclined plate 32a. In the first group 44a and the second group 44b, when the acoustic holes 34 are arranged in the same number (for example, 5 rows each), the strength and the acoustic balance are good.

Further, the distance p3 of the acoustic holes 34 adjacent to the bottom plate 30 and the inclined plate 32a via the bent portion 38a is set to be larger than the distance p1 and the distance p2, so that the bent portion 38a can be easily formed. Sufficient strength is maintained. As is clear from FIG. 5, the bent portion 38a is slightly inclined with respect to the side wall 22a forming the edge of the main body housing 14. The hole group 36a is also slightly inclined with respect to the side wall 22a in accordance with the extending direction of the bent portion 38a. Although the speaker 26R is parallel to the side wall 22a, it may be arranged in the extending direction of the bent portion 38a depending on the layout conditions.

In the information device 10 configured in this way, since the acoustic hole 34 provided in the inclined plate 32a penetrates perpendicularly to the inclined plate 32a, the sound of the speaker 26R easily passes through, so-called trapped sound. It is possible to improve the sound quality without becoming. Further, since a gap is secured between the inclined plate 32a and the mounting surface (for example, a desk surface), the sound passing through the acoustic hole 34 of the inclined plate 32a is guided to the side of the main body housing 14, and the user Is easy to hear.

Further, in the information device 10, since the speaker unit 46 is arranged above the acoustic hole 34, the distance between the speaker unit 46 and the acoustic hole 34 is short and sound can easily pass through.
Furthermore, since the speaker unit 46 is arranged according to the average inclination angle of the facing portion of the lower cover 24, the penetration direction of the acoustic hole 34 generally points to the diaphragm 46a, and sound easily passes through. The sound generated from the diaphragm 46a radiates radially, but the sound radiated downward and diagonally to the left escapes from the acoustic hole 34 provided in the bottom plate 30, and the sound radiated diagonally to the right is provided in the inclined plate 32a. It escapes from the made acoustic hole 34. Therefore, the sound of the speaker unit 46 is emitted to the outside in a well-balanced manner and with almost no obstruction.

Next, the information devices 10A and 10B according to the modified example of the present embodiment will be described. In the description of the information devices 10A and 10B, the same components as those of the information device 10 are designated by the same reference numerals, and detailed description thereof will be omitted. 6A and 6B are views showing an information device according to a modified example, FIG. 6A is a partially enlarged cross-sectional front view of the information device 10A according to the first modified example, and FIG. 6B is a second modified example. It is a partially enlarged sectional front view of the information device 10B. In the main body housings 14A and 14B of the information devices 10A and 10B, the speaker 26R is arranged at the same position as the main body housing 14 and in the same direction.

As shown in FIG. 6A, the main body housing 14A of the information device 10A includes an upper cover 22 and a lower cover 24A. The lower cover 24A includes a bottom plate 30, an inclined plate 32aa that inclines upward from the bottom plate 30 toward the edge of the main body housing 14A, and an inclined plate 32ab that inclines upward from the inclined plate 32aa toward the edge. Be prepared. The bottom plate 30 and the inclined plate 32aa are connected via a bent portion 38aa, and the inclined plate 32aa and the inclined plate 32ab are connected via a bent portion 38ab. A plurality of acoustic holes 34 are formed from the bottom plate 30 to the inclined plate 32aa and the inclined plate 32ab to form a hole group 36Aa. The acoustic hole 34 penetrates vertically to each of the provided locations, that is, the bottom plate 30, the inclined plate 32aa, and the inclined plate 32ab. The lower cover 24A is a metal plate, and the bent portions 38aa and 38ab are formed by bending. The bending angles of the bent portion 38aa and the bent portion 38ab may be the same or different. The length of the inclined plate 32aa and the length of the inclined plate 32ab may be the same or different. Further, the inclined plate 32aa may be set to be longer depending on the design conditions, and the inclined plate 32aa may cover almost the entire lower portion of the speaker unit 46. The number of bent portions may be 3 or more.

As shown in FIG. 6B, the main body housing 14B of the information device 10B includes an upper cover 22 and a lower cover 24B. The lower cover 24B includes a bottom plate 30 and an inclined plate 32ac that is inclined upward from the bottom plate 30 toward the edge of the main body housing 14B. The inclined plate 32ac is a curved surface that is convex downward and gently curved, and covers almost the entire lower part of the speaker unit 46. The bottom plate 30 and the inclined plate 32ac are continuously connected. A plurality of acoustic holes 34 are formed in the inclined plate 32ac to form a hole group 36Ba. The acoustic hole 34 penetrates perpendicularly to the inclined plate 32ac depending on the location where the acoustic hole 34 is provided. The lower cover 24B is a metal plate, and the inclined plate 32ac is formed by bending. The information devices 10A and 10B have the same or almost the same effects as the above-mentioned information device 10.

Next, a method of manufacturing the information device 10 will be described. FIG. 7 is a flowchart showing a manufacturing method of the information device 10. 8A and 8B are views for explaining a manufacturing process of the information device 10, FIG. 8A is a diagram for explaining an acoustic hole forming process, and FIG. 8B is a diagram for explaining a bending process.

In step S1 of FIG. 7, first, the acoustic hole forming process is carried out. That is, a plurality of acoustic holes 34 are formed in the metal plate that is the base material of the lower cover 24. As shown in FIG. 8A, in the acoustic hole forming step, the base material plate of the lower cover 24 is placed on the table 56 in which a plurality of punched holes 54 are formed, and a CNC (Computerized Manual Control) drill is used from above. Drill at 58. The acoustic hole 34 is formed by the drill 58 penetrating the base material and fitting into the punch hole 54. The formed acoustic hole 34 penetrates perpendicularly to the base metal. A plurality of drills 58 may be used to form some or all of the acoustic holes 34 at the same time. The table 56 may be omitted depending on the processing conditions. In addition to the drill 58, for example, a laser or a punch may be used as a means for forming the acoustic hole 34 perpendicular to the surface.

The bending step is carried out in step S2. That is, the metal plate is bent at a position including the region where the plurality of acoustic holes 34 are formed to form the bottom plate 30 and the inclined plate 32a. As shown in FIG. 8B, in the bending step, the semi-finished product of the lower cover 24 is sandwiched between the upper mold 62 and the lower mold 64 having surfaces bent into opposite shapes, and the bent portion 38a (see FIG. 4). ), The bottom plate 30 and the inclined plate 32a are formed. In the bending step, the bent portions 38a to 38d (see FIG. 2) may be formed at the same time.

The assembly process is carried out in step S3. That is, predetermined parts such as the speakers 26R and 26L, the keyboard device 12, and the motherboard are attached to the upper cover 22. The speakers 26R and 26L are arranged at positions where the speaker unit 46 is located above the acoustic hole 34. Then, the main body housing 14 is obtained by combining the upper cover 22 and the lower cover 24. Further, the information device 10 can be obtained by attaching the separately assembled display housing 18.

According to the method of manufacturing the information device 10, a plurality of the bottom plate 30 which is a mounting portion, the inclined plate 32a which is inclined upward from the bottom plate 30 toward the edge of the main body housing 14, and the inclined plate 32a. The acoustic hole 34 can be formed. Further, the acoustic hole 34 can be formed so as to penetrate perpendicularly to the bottom plate 30 and the inclined plate 32a depending on the position.

The present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

10, 10A, 10B Information equipment 14, 14A, 14B Main body housing 18 Display housing 22 Top cover 22a, 22b Side wall 24, 24A, 24B Bottom cover 26R, 26L Speaker 30 Bottom plate 32a, 32aa, 32ab, 32b, 32c Inclined plate 34 Acoustic holes 36a, 36b, 36Aa, 36Ba, 37a, 37b Hole group 38a, 38aa, 38ab, 38b, 38c, 38d Bending part 44a 1st group 44b 2nd group 46 Speaker unit 46a Diaphragm 48 Speaker box

Claims (7)

An information device having a speaker in a housing having an upper cover and a lower cover.
The lower cover is
The bottom plate, which is the mounting part,
An inclined plate that inclines upward from the bottom plate toward the edge of the housing,
A plurality of acoustic holes provided over the inclined plate from said bottom plate,
Equipped with
The acoustic hole in the inclined plate penetrates perpendicularly to the inclined plate.
The acoustic hole in the bottom plate penetrates perpendicularly to the bottom plate.
An information device characterized in that the speaker unit of the speaker is arranged above a plurality of the acoustic holes. In the information device according to claim 1,
An information device characterized in that the diaphragm of the speaker unit is arranged according to an average inclination angle of a portion of the lower cover facing the speaker unit. In the information device according to claim 1 or 2.
The inclined plate is a flat plate,
An information device characterized in that the bottom plate and the inclined plate are connected to each other via a bent portion. In the information device according to any one of claims 1 to 3.
The bottom plate and the inclined plate are connected to each other via a bent portion.
The distance between the acoustic holes adjacent to each other through the bend between the bottom plate and the inclined plate is larger than the distance between the adjacent acoustic holes in the bottom plate and the distance between the adjacent acoustic holes in the inclined plate. An information device characterized by that. In the information device according to any one of claims 1 to 4.
An information device characterized in that the bottom plate and the inclined plate are one metal plate. In the information device according to any one of claims 1 to 5.
An information device characterized in that the acoustic hole is circular. A method of manufacturing an information device having a speaker in a housing having an upper cover and a lower cover.
The process of forming multiple acoustic holes in a metal plate and
The metal plate is bent at a position including a region where a plurality of the acoustic holes are formed to form a bottom plate as a mounting portion and an inclined plate inclined upward from the bottom plate toward the edge of the housing. And the process to do
The process of arranging the speaker unit above the plurality of acoustic holes and
A method of manufacturing an information device, characterized in that it has.

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