JP2008211736A - Electronic device - Google Patents

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JP2008211736A
JP2008211736A JP2007048903A JP2007048903A JP2008211736A JP 2008211736 A JP2008211736 A JP 2008211736A JP 2007048903 A JP2007048903 A JP 2007048903A JP 2007048903 A JP2007048903 A JP 2007048903A JP 2008211736 A JP2008211736 A JP 2008211736A
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speaker
housing
sound
sound emitting
emitting hole
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Mitsutaka Sakamoto
光隆 坂本
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To improve acoustic characteristics by mounting a speaker on a housing so that arrangement direction of a speaker body does not affect thickness direction and width direction of a mobile-phone body when a sound discharge hole is provided at a side surface or a ridge line of the mobile-phone body, and by ensuring airtightness of a front air chamber. <P>SOLUTION: The device is provided with a speaker 3, electronic device housings (1, 2) with the built-in speaker 3 wherein a housing sound discharge hole 6 which outputs sound output from a speaker sound discharge hole 3a to the outside of the housing is formed and a speaker holding structure part 10 which holds the speaker 3 so as to press the speaker 3 to a cushion member 4 provided between an inner wall of the housing and the speaker 3 in contact with a chamfered part 5 formed in a rear side of a surface provided with the speaker sound discharge hole 3a. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、音声を出力するスピーカを備えた携帯電話機等の電子機器に関するものである。   The present invention relates to an electronic device such as a mobile phone provided with a speaker for outputting sound.

音声を出力するスピーカを備えた電子機器である携帯電話機は、筐体に放音孔が設けられ、筐体内部にスピーカが設けられている。スピーカから出力された音声は放音孔を介して外部に出力される。携帯電話機をより小型化、薄型化するため、スピーカを携帯電話機に実装する手法についても工夫されている。   A mobile phone that is an electronic device including a speaker that outputs sound includes a sound emitting hole in a housing and a speaker in the housing. The sound output from the speaker is output to the outside through the sound emission hole. In order to make the mobile phone smaller and thinner, a technique for mounting the speaker on the mobile phone has also been devised.

小型化を図ることのできるスピーカ配置構造として、携帯電話機のデザインに伴って生まれる、意匠ケース内面と基板収納部との間の空間を有効利用する技術が特許文献１に記載されている。スピーカの放音孔を意匠ケースの放音孔に向けるのではなく、携帯電話機本体内側に向けてスピーカを配置できるような保持構造とし、スピーカ裏面の凸となっている磁石を覆っている鉄板であるヨークを意匠ケース内面と基板収納部との間に生まれる空間に収める構造をとる。   As a speaker arrangement structure that can be miniaturized, Patent Document 1 discloses a technology that effectively uses the space between the inner surface of the design case and the substrate housing portion, which is born with the design of a mobile phone. Instead of directing the speaker's sound emission hole to the design case's sound emission hole, the holding structure is such that the speaker can be placed toward the inside of the mobile phone body, and an iron plate covering the convex magnet on the back of the speaker A certain yoke is structured to be housed in a space created between the inner surface of the design case and the substrate housing portion.

特開平７−１６２４９５号公報JP-A-7-162495

ところで、特許文献１に記載の手法を用いてスピーカを実装した場合、意匠ケースの放音孔が配置されている部位に、スピーカ裏面の磁石を覆っている鉄板であるヨークを収める空間が必要になるなどの制約がある。また、スピーカ裏面のヨーク自体の厚みが携帯電話機本体の厚みに与える影響は微小であり、それよりも、スピーカ本体の配置方向による携帯電話機本体の厚みへ及ぼす影響の方が大きいため、携帯電話機本体の小型化、薄型化を図る上で大きな効果を期待することはできない。   By the way, when a speaker is mounted using the method described in Patent Document 1, a space for housing a yoke, which is an iron plate covering the magnet on the back surface of the speaker, is required in the portion where the sound emission holes of the design case are arranged. There are restrictions such as becoming. In addition, the thickness of the yoke itself on the back of the speaker has a small effect on the thickness of the mobile phone main body, and the influence of the arrangement direction of the speaker main body on the thickness of the mobile phone main body is larger than that. A large effect cannot be expected in reducing the size and thickness of the device.

本発明は、外部から供給された電気信号に基づいて空気を振動させて音声を生成するスピーカ振動板を内蔵するスピーカ筐体の面のうち、スピーカ振動板と対向する面に形成されて、スピーカ振動板が生成した音声を外部に出力するスピーカ放音孔を有するスピーカと、このスピーカを内蔵するとともに、スピーカ放音孔から出力された音声を筐体の外部に出力する筐体放音孔が形成された電子機器筐体と、スピーカのスピーカ放音孔が設けられた面の背面側に形成された面取り部に接触して、筐体の内壁とスピーカとのあいだに設けられたクッション部材にスピーカを押圧するようにスピーカを保持するスピーカ保持構造部とを設けたものである。   The present invention is formed on a surface facing a speaker diaphragm among the surfaces of a speaker housing incorporating a speaker diaphragm that vibrates air based on an electric signal supplied from the outside to generate sound. A speaker having a speaker sound emitting hole for outputting the sound generated by the diaphragm to the outside, and a housing sound emitting hole for incorporating the speaker and outputting the sound output from the speaker sound emitting hole to the outside of the housing A cushion member provided between the inner wall of the housing and the speaker is in contact with the formed electronic device housing and a chamfered portion formed on the back side of the surface where the speaker sound emission hole of the speaker is provided. A speaker holding structure for holding the speaker so as to press the speaker is provided.

本発明は、外部から供給された電気信号に基づいて空気を振動させて音声を生成するスピーカ振動板を内蔵するスピーカ筐体の面のうち、スピーカ振動板と対向する面に形成されて、スピーカ振動板が生成した音声を外部に出力するスピーカ放音孔を有するスピーカと、このスピーカを内蔵するとともに、スピーカ放音孔から出力された音声を筐体の外部に出力する筐体放音孔が形成された電子機器筐体と、スピーカのスピーカ放音孔が設けられた面の背面側に形成された面取り部に接触して、筐体の内壁とスピーカとのあいだに設けられたクッション部材にスピーカを押圧するようにスピーカを保持するスピーカ保持構造部とを設けたので、電子機器本体の薄型化を図ることができ、かつ、良好な音響特性を実現できるという効果を奏する。   The present invention is formed on a surface facing a speaker diaphragm among the surfaces of a speaker housing incorporating a speaker diaphragm that vibrates air based on an electric signal supplied from the outside to generate sound. A speaker having a speaker sound emitting hole for outputting the sound generated by the diaphragm to the outside, and a housing sound emitting hole for incorporating the speaker and outputting the sound output from the speaker sound emitting hole to the outside of the housing A cushion member provided between the inner wall of the housing and the speaker is in contact with the formed electronic device housing and a chamfered portion formed on the back side of the surface where the speaker sound emission hole of the speaker is provided. Since the speaker holding structure portion that holds the speaker so as to press the speaker is provided, it is possible to reduce the thickness of the electronic device main body and achieve excellent acoustic characteristics.

実施の形態１．
以下、本発明の実施の形態１に係る電子機器について、図１を参照して説明する。図１は、本発明に係る電子機器のスピーカ実装部分の断面を示す断面図である。以下の説明では、図１に示す電子機器は携帯電話機とする。図１に示す携帯電話機は、意匠ケース（前）１と意匠ケース（後）２が組み合わせられて筐体が形成されている。筐体放音孔６は、筐体の側面に形成されている。スピーカ３は、外部から供給された電気信号に基づいて空気を振動させて音声を生成するスピーカ振動板をスピーカ筐体内部に内蔵している。スピーカ３は、意匠ケース（前）１と対向するように配置されている。スピーカ３のスピーカ放音孔３ａは筐体に対して垂直方向を向いており、筐体放音孔６は筐体に対して水平方向に向いている。つまり、スピーカ放音孔３ａと筐体放音孔６の開口方向は略直角になっている。 Embodiment 1 FIG.
Hereinafter, an electronic apparatus according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view showing a cross section of a speaker mounting portion of an electronic apparatus according to the present invention. In the following description, the electronic device illustrated in FIG. 1 is a mobile phone. The mobile phone shown in FIG. 1 has a case formed by combining a design case (front) 1 and a design case (rear) 2. The housing sound emitting hole 6 is formed on the side surface of the housing. The speaker 3 has a built-in speaker diaphragm that vibrates air based on an electrical signal supplied from the outside to generate sound. The speaker 3 is disposed so as to face the design case (front) 1. The speaker sound emitting hole 3a of the speaker 3 is oriented in the vertical direction with respect to the housing, and the housing sound emitting hole 6 is oriented in the horizontal direction with respect to the housing. That is, the opening direction of the speaker sound emission hole 3a and the housing sound emission hole 6 is substantially perpendicular.

図２は、一般的な電子機器のスピーカ実装部分の一例を示す断面図である。スピーカを電子機器筐体に取り付ける場合、より高い音響特性を得るためには、スピーカより発した音を漏らさず意匠ケースに設けられている放音孔から出力させる構造をとる必要がある。そのために、意匠ケースとスピーカとの間に生まれる前気室の密閉性が重要である。前気室の密閉性を高め、音漏れを防ぐため、図２に示すように、意匠ケース（前）１とスピーカ７との間に挟んでいるクッション部材８に対してまんべんなく圧縮力をかける構造が必要となってくる。そのため、意匠ケース（前）１に設けられている放音孔６の向きに対して、スピーカ７の放音孔７ａの向きを合わせるように設計されている。放音孔６とスピーカ放音孔７ａの向きをあわせることにより、意匠ケース（前）１の内壁１ａとスピーカ７本体が平行となり、その間に挟んだクッション部材８に対してまんべんなく均一な圧縮力を与えることができる。しかし、その構造を用いることによって、デザイン上、放音孔６が携帯電話機本体の側面や、稜線沿いに設けられている場合には、スピーカ７の配置もそのデザインに合わせた配置となり、スピーカ７の形状が携帯電話機本体の厚みに大きく影響する問題も生じ得る。   FIG. 2 is a cross-sectional view illustrating an example of a speaker mounting portion of a general electronic device. When the speaker is attached to the electronic device casing, in order to obtain higher acoustic characteristics, it is necessary to take a structure in which sound emitted from the speaker is output from the sound emission hole provided in the design case without leaking. For this purpose, the airtightness of the front air chamber created between the design case and the speaker is important. In order to improve the airtightness of the front air chamber and prevent sound leakage, as shown in FIG. 2, a structure in which a compressive force is applied evenly to the cushion member 8 sandwiched between the design case (front) 1 and the speaker 7 Will be needed. For this reason, the sound emitting hole 7 a of the speaker 7 is designed so that the direction of the sound emitting hole 7 a provided in the design case (front) 1 is aligned. By aligning the direction of the sound emitting hole 6 and the speaker sound emitting hole 7a, the inner wall 1a of the design case (front) 1 and the main body of the speaker 7 become parallel, and a uniform compressive force is applied evenly to the cushion member 8 sandwiched therebetween. Can be given. However, by using the structure, when the sound emitting hole 6 is provided on the side surface of the mobile phone body or along the ridgeline by design, the arrangement of the speakers 7 is also arranged according to the design. The shape of the mobile phone may greatly affect the thickness of the mobile phone body.

そこで、本発明は図１に示すように、スピーカ３に面取り部５を形成することとした。具体的には、スピーカ３の裏面、すなわち、スピーカ３のスピーカ放音孔３ａ側を表面としたときの背面側の一辺を面取りすることにより、面取り部５を形成している。この面取り部５が形成されたスピーカ３を、スピーカ３裏面の面取り部５を携帯電話機本体の内壁と接触させることにより、携帯電話機本体に保持する構造とした。この構造を利用することにより、前気室９（意匠ケースとスピーカとの間に生まれる空間）を密閉する為に用いるクッション部材４に対して、携帯電話機本体内部のスピーカ固定部からの圧縮力が、スピーカ３の配置方向に関係なく、まんべんなく圧縮力を加えることができる。本構造を用いることにより、前気室９を密閉するために用いるクッション部材４に対して、意匠ケースの放音孔６に対してスピーカ３の放音孔３ａの向きを合わせる必要がなく、携帯電話機本体の薄型化を図ることができるという効果を奏する。   Therefore, in the present invention, the chamfered portion 5 is formed on the speaker 3 as shown in FIG. Specifically, the chamfered portion 5 is formed by chamfering one side of the back surface of the speaker 3, that is, when the speaker sound emitting hole 3 a side of the speaker 3 is the front surface. The speaker 3 in which the chamfered portion 5 is formed is configured to be held on the mobile phone body by bringing the chamfered portion 5 on the back surface of the speaker 3 into contact with the inner wall of the mobile phone body. By utilizing this structure, the compressive force from the speaker fixing portion inside the mobile phone body is applied to the cushion member 4 used to seal the front air chamber 9 (the space created between the design case and the speaker). Regardless of the arrangement direction of the speaker 3, the compressive force can be applied evenly. By using this structure, it is not necessary to match the direction of the sound emission hole 3a of the speaker 3 with respect to the sound emission hole 6 of the design case with respect to the cushion member 4 used for sealing the front air chamber 9, and There is an effect that the telephone body can be thinned.

図１は、デザイン上、携帯電話機本体の筐体放音孔が筐体の側面に設けられているもののスピーカの実装構造を示す断面図である。スピーカ３の配置方向は、スピーカ３の放音孔３ａを、携帯電話機本体の筐体放音孔６に向けるように配置するのではなく、携帯電話機本体の厚みに対して、影響の最も少ない配置の仕方を選択している。具体的には、スピーカ３が、携帯電話機本体の筐体放音孔６とスピーカ３のスピーカ放音孔３ａの向きが直角になるよう、スピーカ３は筐体内部に配置されている。このように配置するとき、意匠ケース１上とスピーカ３との間の空間である前気室９を密閉するためには、携帯電話機本体の厚み方向のみではなく、携帯電話機本体側面方向をもカバーするクッション部材４が必要である。スピーカ３の裏面（表面をスピーカ放音孔３ａ側としたとき）の一辺に面取り部５を形成するとともに、図１のようにスピーカ３の面取り部５を保持する構造をもつスピーカ保持構造部としてホルダー１０を用いることにより、側面までカバーするクッション部材４に対しても、圧縮力をかけることができ、意匠ケース（前）１とスピーカ３との間に生まれた前気室９の密閉性を保つことができる。   FIG. 1 is a cross-sectional view showing a mounting structure of a speaker in which a housing sound emitting hole of a mobile phone body is provided on a side surface of the housing by design. The arrangement direction of the speaker 3 is not arranged so that the sound emitting hole 3a of the speaker 3 is directed to the housing sound emitting hole 6 of the mobile phone body, but has the least influence on the thickness of the mobile phone body. Choose how to do. Specifically, the speaker 3 is arranged inside the casing so that the speaker 3 has a right angle with respect to the casing sound emitting hole 6 of the mobile phone body and the speaker sound emitting hole 3a of the speaker 3. In this arrangement, in order to seal the front air chamber 9 which is the space between the design case 1 and the speaker 3, not only the thickness direction of the mobile phone body but also the side surface direction of the mobile phone body is covered. A cushion member 4 is required. As a speaker holding structure portion having a structure in which the chamfered portion 5 is formed on one side of the back surface of the speaker 3 (when the front surface is the speaker sound emission hole 3a side) and the chamfered portion 5 of the speaker 3 is held as shown in FIG. By using the holder 10, a compressive force can be applied to the cushion member 4 covering up to the side surface, and the airtightness of the front air chamber 9 born between the design case (front) 1 and the speaker 3 is improved. Can keep.

上記説明のように、本発明は、携帯電話機本体の筐体放音孔６が側面に設けられている場合や、短稜に設けられている場合などに、スピーカ３を、スピーカ３のスピーカ放音孔３ａを携帯電話機本体の筐体放音孔６に向けて配置するのではなく、携帯電話機本体の厚みに対して、スピーカ３の形状が最も影響のない向き（筐体放音孔６の開口方向とスピーカ放音孔３ａの開口方向が略直角）を選択し配置する。したがって、携帯電話機本体の薄型化を図ることができるものである。そして、スピーカ３に形成された面取り部５を保持する保持構造部材を採用することにより、クッション部材４に対して、携帯電話機本体内部のスピーカ固定部からの圧縮力が、スピーカ３の配置方向に関係なく、まんべんなく圧縮力を加えることができる。したがって、前気室９の密閉性を低下させることなく配置することができ、良好な音響特性を実現できる。   As described above, according to the present invention, the speaker 3 is connected to the speaker 3 when the housing sound emitting hole 6 of the mobile phone main body is provided on the side surface or on the short ridge. Rather than disposing the sound hole 3a toward the housing sound emitting hole 6 of the mobile phone body, the direction in which the shape of the speaker 3 has the least influence on the thickness of the mobile phone body (the housing sound emitting hole 6) The opening direction and the opening direction of the speaker sound emission hole 3a are selected and arranged. Therefore, the mobile phone body can be thinned. Then, by adopting a holding structure member that holds the chamfered portion 5 formed on the speaker 3, the compressive force from the speaker fixing portion inside the mobile phone body is applied to the cushion member 4 in the arrangement direction of the speaker 3. Regardless, the compression force can be applied evenly. Therefore, it can arrange | position without reducing the sealing property of the front air chamber 9, and can implement | achieve a favorable acoustic characteristic.

実施の形態２．
図３は、本発明の実施の形態２に係る電子機器のスピーカ実装部分の断面を示す断面図である。図３は、デザイン上、携帯電話機本体の筐体放音孔６が筐体の稜線部に設けられているもののスピーカの実装構造を示す断面図である。図３において、図１と同一の符号は同一または相当部分を示すので説明は省略する。図３は図１と異なり、携帯電話機本体の幅方向の小型化を目的としたときに有効な配置となっている。例えば、携帯電話機本体の筐体放音孔６が筐体の稜線部に設けられているデザインのとき、筐体放音孔６方向に向くようにスピーカ３を斜めに傾けた状態で配置すると、携帯電話機本体の厚み、幅ともにスピーカ３の形状や配置構造に大きく影響をうけることになる。一方、図３のような構造をとった場合には、幅方向に対して大きな小型化が望める。スピーカ３の裏面の一辺に面取り部５が形成されている点、スピーカ３の面取り部５を保持する構造をもつホルダー１０を用いる点は図１に示すものと同様であり、側面までカバーするクッション部材４に対しても、圧縮力をかけることができ、意匠ケース（前）１とスピーカ３との間に生まれた前気室９の密閉性を保つことができる。 Embodiment 2. FIG.
FIG. 3 is a cross-sectional view showing a cross section of the speaker mounting portion of the electronic apparatus according to Embodiment 2 of the present invention. FIG. 3 is a cross-sectional view showing a mounting structure of a speaker in which a housing sound emitting hole 6 of the mobile phone main body is provided in a ridge line portion of the housing in terms of design. In FIG. 3, the same reference numerals as those in FIG. FIG. 3 differs from FIG. 1 in that the arrangement is effective for the purpose of downsizing the mobile phone body in the width direction. For example, when the housing sound emitting hole 6 of the mobile phone body is designed to be provided at the ridge line portion of the housing, the speaker 3 is arranged in an inclined state so as to face the housing sound emitting hole 6 direction. Both the thickness and width of the mobile phone body are greatly affected by the shape and arrangement structure of the speaker 3. On the other hand, when the structure as shown in FIG. 3 is adopted, a large size reduction can be expected in the width direction. The point that the chamfered portion 5 is formed on one side of the back surface of the speaker 3 and the point that the holder 10 having a structure for holding the chamfered portion 5 of the speaker 3 is used are the same as those shown in FIG. A compressive force can also be applied to the member 4, and the airtightness of the front air chamber 9 born between the design case (front) 1 and the speaker 3 can be maintained.

また、本構造を用いることにより、どのような位置に意匠ケースの放音孔が設けられていても、スピーカを斜めに配置したりすることが無く、携帯電話機本体内部の保持構造を簡単にすることができることや、レシーバなど他の音響部品の配置にも応用ができる。   Moreover, by using this structure, the speaker is not disposed obliquely regardless of the position where the sound emission hole of the design case is provided, and the holding structure inside the mobile phone body is simplified. It can be applied to other acoustic components such as receivers.

本発明の実施の形態１に係る電子機器のスピーカ実装部分の断面を示す断面図である。It is sectional drawing which shows the cross section of the speaker mounting part of the electronic device which concerns on Embodiment 1 of this invention. 電子機器のスピーカ実装部分の一例を示す断面図である。It is sectional drawing which shows an example of the speaker mounting part of an electronic device. 本発明の実施の形態２に係る電子機器のスピーカ実装部分の断面を示す断面図である。It is sectional drawing which shows the cross section of the speaker mounting part of the electronic device which concerns on Embodiment 2 of this invention.

符号の説明Explanation of symbols

１ 意匠ケース（前）、２ 意匠ケース（後）、３ スピーカ、４ クッション部材、
５ 面取り部、６ 放音孔、７ スピーカ、８ クッション部材、９ 前気室、
１０ ホルダー 1 design case (front), 2 design case (rear), 3 speaker, 4 cushion member,
5 Chamfered portion, 6 Sound emission hole, 7 Speaker, 8 Cushion member, 9 Front air chamber,
10 Holder

Claims (3)

外部から供給された電気信号に基づいて空気を振動させて音声を生成するスピーカ振動板を内蔵するスピーカ筐体の面のうち、前記スピーカ振動板と対向する面に形成されて、前記スピーカ振動板が生成した音声を外部に出力するスピーカ放音孔を有するスピーカと、
このスピーカを内蔵するとともに、前記スピーカ放音孔から出力された音声を筐体の外部に出力する筐体放音孔が形成された電子機器筐体と、
前記スピーカの前記スピーカ放音孔が設けられた面の背面側に形成された面取り部に接触して、前記筐体の内壁と前記スピーカとのあいだに設けられたクッション部材に前記スピーカを押圧するように前記スピーカを保持するスピーカ保持構造部とを設けたことを特徴とする電子機器。 The speaker diaphragm is formed on a surface facing a speaker diaphragm out of a surface of a speaker housing having a built-in speaker diaphragm that vibrates air based on an electric signal supplied from outside. A speaker having a speaker sound emitting hole for outputting the sound generated by
An electronic device housing in which a housing sound emitting hole that outputs the sound output from the speaker sound emitting hole to the outside of the housing is formed, with the built-in speaker.
The speaker is pressed against a cushion member provided between the inner wall of the housing and the speaker in contact with a chamfered portion formed on the back side of the surface of the speaker where the speaker sound emission hole is provided. An electronic apparatus comprising a speaker holding structure for holding the speaker as described above. スピーカ保持構造部は、筐体放音孔が電子機器筐体の側面に形成されている場合に、前記電子機器筐体の内壁とスピーカ放音孔が略平行な位置であって前記スピーカ放音孔と前記筐体放音孔の開口方向が略直角になるように、スピーカを保持することを特徴とする請求項１に記載の電子機器。 The speaker holding structure is configured so that when the housing sound emitting hole is formed on a side surface of the electronic device housing, the inner wall of the electronic device housing and the speaker sound emitting hole are positioned substantially parallel to each other. The electronic apparatus according to claim 1, wherein the speaker is held such that an opening direction of the hole and the housing sound emitting hole is substantially perpendicular. スピーカ保持構造部は、筐体放音孔が電子機器筐体の稜線に形成されている場合に、前記電子機器筐体の側面内壁とスピーカ放音孔が略平行になるようスピーカを保持することを特徴とする請求項１に記載の電子機器。 The speaker holding structure holds the speaker so that the inner wall of the side surface of the electronic device casing and the speaker sound emitting hole are substantially parallel when the housing sound emitting hole is formed on the ridge line of the electronic device casing. The electronic device according to claim 1.
JP2007048903A 2007-02-28 2007-02-28 Electronic device Withdrawn JP2008211736A (en)

Priority Applications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014068807A1 (en) * 2012-10-29 2014-05-08 Ｎｅｃカシオモバイルコミュニケーションズ株式会社 Portable terminal device and meth od for manufacturing portable terminal device
JP2017535090A (en) * 2014-12-26 2017-11-24 ゴーアテック インコーポレイテッドＧｏｅｒｔｅｋ Ｉｎｃ Speaker module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014068807A1 (en) * 2012-10-29 2014-05-08 Ｎｅｃカシオモバイルコミュニケーションズ株式会社 Portable terminal device and meth od for manufacturing portable terminal device
CN104756471A (en) * 2012-10-29 2015-07-01 Nec卡西欧移动通信株式会社 Portable terminal device and meth od for manufacturing portable terminal device
JPWO2014068807A1 (en) * 2012-10-29 2016-09-08 日本電気株式会社 Mobile terminal device and method for manufacturing mobile terminal device
US9485337B2 (en) 2012-10-29 2016-11-01 Nec Corporation Mobile terminal device and method for manufacturing the same
JP2017535090A (en) * 2014-12-26 2017-11-24 ゴーアテック インコーポレイテッドＧｏｅｒｔｅｋ Ｉｎｃ Speaker module

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