九、發明說明： 【發明所屬之技術領域】 本發明係涉及一種音箱結構’尤係涉及一種移動 電子設備之音箱結構。 【先前技術】 。隨著資訊産業之快速發展，移動電子設備如移動 電話（Mobile telephone)、個人數位助理（pDA)之需求量 大增。移動電話作爲通訊工具，其最基本之功能係傳 輸聲音信號。爲傳輸聲音信號，需採用電聲轉換元件 將聲音信號轉換爲電訊號，或者將電訊號轉換爲結構 震動以産生聲音。其中，廣泛應用之將電訊號轉換爲 聲曰之電聲轉換元件爲揚聲器（L〇u(jSpeaker) 〇 近年來’由於移動電話不斷朝向輕薄短小之方向 發展，在移動電話中使用之揚聲器之尺寸也受到限 制。爲使揚聲器之發聲得到良好之共鳴，通常直接在 移動電話之内部空間裏設置音箱殼體，將揚聲器收容 於内以作爲揚聲器之音箱，&而提高該移動電話之發 聲品質。 然而’移動電話不斷朝著輕薄短小之方向發展， 移動電話之内部空間也隨之减小’這就使揚聲器音箱 之有效容積减小’從而提高該揚聲器音箱之低頻共振 頻，。該揚聲器音箱低頻共振頻率之提高將降低該揚 聲器之低音表現能力，提高揚聲器之失真度，從而影 1323135 響該移動電話之發聲品質。 【發明内容】 有鑒於此，有必要提供一種具有提升發聲品質之 音箱結構及採用該音箱結構之移動電子設備。 一種音箱結構，包括音箱殼體及置於該音箱殼體 内之揚聲器，該音箱殼體内形成有前音響室及後音響 室，該揚聲器設於該前音響室及後音響室之間，該前 音響室上設有出音孔與外界連通，該前音響室與該後 音響室之間藉由導音管連通。 一種移動電子設備，包括一外殼，該外殼上設有 出音孔，該外殼内設有音箱結構，該音箱結構包括音 箱殼體、置於該音箱殼體内之揚聲器及與揚聲器電連 接之電路板，該音箱殼體内形成有前音響室及後音響 室，該揚聲器設於該前音響室及後音響室之間，該前 音響室上設有出音孔並與該外殼上之出音孔對應，該 前音響室與該後音響室之間藉由導音管連通。 與習知技術相比，上述音箱結構中分別形成前、 後音響室結構，揚聲器向前及向後發出之聲波分別進 入該前、後音響室產生共振，並藉由該導音管將該前 音響室與該後音響室連通。由於該導音管之連通，該 揚聲器與該後音響室形成倒相式音箱結構，該後音響 室發出之聲波與該前音響室之聲波叠加並且共振後 傳遞至外界，從而有效地降低該音箱結構之低頻共振 頻率，擴展頻帶之寬度，提高低音揚聲器單元之輻射 7 效率，進而提升移動電話之發聲品質。 【實施方式】 下面參照附圖，結合實施例作進一步說明。 圖1所示爲本發明移動電子設備之其中一實施例 中以移動電話100爲例之結構示意圖。該移動電話100 包括一電話外殼10，該電話外殼10大致呈長方體形結 構’該電話外殼ίο之底部區域形成一按鍵區11，中央 區域形成一顯示區12，頂端則形成一發聲區13。該發 聲區13之侧壁上設有出音孔132。 請參照圖1與圖2 ’該電話外殼1〇之内部於對應移 動電話100之發聲區13之位置設有一音箱結構2〇，該 音箱結構20包括一電路板30、一框體4〇、一揚聲器50 及一音箱殼體60。該揚聲器50置於該音箱殼體6〇内， 該音箱殼體60及該電路板30之間夾設該框體4〇，從而 形成該音箱結構20。當然，該音箱結構2〇除了應用於 圖1所示直板式移動電話100之外，還可應用於各類折 叠式移動電話或電子設備。 請參照圖2至圖4，該音箱殼體60爲一長方形半封 閉結構’其由一底板61及四侧板62、63、64及65合圍 而形成一收容空間。該等侧板62、63、64及65之頂面 均位於同一平面上，以便與該框體4〇緊密貼合。 請參照圖4及圖5，該音箱殼體6〇之底板61上向四 侧板62、63、64及65之延伸方向延伸形成一圓管形環 墙66。該環墙66靠近該底板61之一端向内凸伸設有環 狀凸緣661 ’該凸緣661與該底板61接觸且合圍而形成 第一腔體60a，環墙66與該凸緣661之頂端合圍而形成 第二腔體60b。該音箱殼體60内還設有一將該環墙66 與側板62連接之隔板67，以及一將該環墙66與側板65 連接之隔板68。該底板61、環墙66、隔板67、68以及 侧板62、65合圍而形成第三腔體60c;該底板61、環墙 66、隔板67、68以及侧板62、63、64、65合圍而形成 第四腔體60d。該隔板67、68之頂面與該側板62、65 之頂面共面，該環墙66與該第三腔體60c相接部份之頂 面與該側板62、65之頂面共面，該環墙66與該第四腔 體60d相接部份之頂面低於該側板62、65之頂面，借 此高度差而將該第二腔體6〇b與第四腔體6〇d相連 通。該環墙66與該第四腔體60d相接部份之上端設有 一凹槽662。該環墙66之凸緣661上對應第三腔體6(^ 之位置設有一通音孔663，該通音孔663將該第一腔體 60a與第二腔體60c相連通。當然，該環墙66也可與該 侧板62相貼接而省略該隔板67，同樣能形成該第三腔 體60c及第四腔體60d。 該側板65上設有一出音孔651，該出音孔651對應 該電話外设10之出音孔132設置，將該第三腔體6〇c與 周圍環境連通。 該隔板68之底部與該底板61之間設有一導音管 69，該導音管69爲一半圓形管體且與該底板61合圍而 形成之一聲音通道，該導音管69整體呈L型結構。該 1323135 導音管69設於該第三腔體内，且料音管69將該第 二腔體60c與該第四腔體6〇d連通。其中，該導音管69 之L型結構使得其可在該第三腔體6〇c之有限空間内 得到較長之長度。鱗音㈣之管口對準該側板65之 出音孔651設置。 凊參照圖2及圖3，該揚聲器5〇爲一圓柱狀結構， 該揚聲器50之正面設有複數前出音孔52(如圖3所 示）’該揚聲器50之背面設有複數後出音孔54(如圖2所 示）’該揚聲器50侧面上設有一凸耳56。該揚聲器5〇 電連接至電路;fe3G，祕將電路板3G輸人之電訊號轉 化爲聲波’並藉由前出音孔52及後出音孔54傳出。該 揚聲器50可組裴於該音箱殼體60之環墙66内，組裝 時’該揚聲器50之前出音孔52朝向該第一腔體6〇a，且 該揚聲器50之正面與該凸緣661之頂面抵接，以利用 該揚聲器50分隔形成第一腔體60a與第二腔體60b，該 揚聲器50之凸耳56與該環墙66之凹槽662緊密配合， 以將該揚聲器50固定於該第二腔體6〇b内。 請參照圖2、圖3及圖6，該框體40係由橡膠、玻 璃纖維布等制振材料製成，該框體4〇設於該音響殼體 60之側板62、63、64及65以及隔板67、68之頂面上（如 圖6所示），並夾設於該音箱殼體60與電路板30之間。 該框體40包括一外框41及設於該外框41内之一内框 42。該外框41及該内框42爲厚度和寬度均相同之片體 結構。該外框41之形狀與該音響殼體60之側板62、 10 1323135 63、64及65之頂面圍成之形狀大致相同，但該外框41 之寬度大於該側板62、63、64及65頂面之寬度。該内 框42之形狀與隔板67、環墙66與第三腔體60c相接部份 及隔板68之頂面圍成之形狀大致相同。該框體4〇被夾 設於該殼體60之侧板62、63、64及65以及該隔板67、 68之頂面與該電路板30之間’該框體4〇與該電路板3〇 及音箱殼體60之接觸處利用枯合劑（圖未示）進行充分 之填充粘合，以填補該電路板3〇與音箱殼體60間之空 隙，從而使該第三腔體6〇c、第四腔體60d藉由導音管 69相連通’達成制振與防止第三腔體6〇c與第四腔體 60d内聲音泄漏之效果。 組裝後，該第一腔體60a與第三腔體60c藉由通音 孔663相連通形成一前音響室61a;該第二腔體60b與第 四腔體60d藉由該環墙66頂面之高度差相連通形成一 後音響室61b，該後音響室61b藉由導音管69而與該前 音響室61a連通。 揚聲器50由前出音孔52及後出音孔54發出之聲 波’分別進入該前音響室61a及後音響室61b産生共 振’並藉由音箱殼體60之侧板65上之出音孔651輻射 至外界。其中，該揚聲器50由前出音孔52發出之聲波 與該前音響室61a内之空氣發生共振然後經出音孔651 輻射至外界；揚聲器5〇由後出音孔54發出之聲波與該 後音響室61b内之空氣發生共振，然後藉由該導音管 69傳遞至該前音響室61a内，與該前音響室6U内之聲 11 132.3135 . 波叠加並與該前音響室61a内之空氣發生共振，然後經 • 該出音孔651輻射至外界。其中，該揚聲器50與該後 音響室61b之結合方式與倒相式音箱之結構相同，從 該揚聲器50之後出音孔54輻射出之聲波在相位上與 從揚聲器50前出音孔52輻射出之聲波倒相，然而該導 音管69將該後出音孔54輻射之聲波之相位倒轉180 度，所以從後音響室61b經由導音管69傳遞至前音響 室61a之聲波與揚聲器50從前音孔52輻射出之聲波在 • 到達該前音響室61a時係同相叠加之，所以該音箱結構 20能提供比沒有該導音管69時更寬之頻帶，使諧振頻 率之峰值向低頻處移動，降低低頻共振頻率，從而提 高發聲之低頻共振效果。由於該導音管69之管口對準 該出音孔651設置，便於直接將該導音管69傳遞之聲 波輻射至外界，從而提高該後音響室61b内聲波之輻 射效率。 根據聲-振分析軟體SYSNOISE類比可得出，當該 ® 音箱殼體60中未設置該導音管69時，該前、後音響室 61a、61b之最低共振頻率分別爲3000Hz、6500Hz ;而 設置該導音管69後，該前、後音響室61a、61b相互連 通，其最低共振頻率爲494Hz。由此可見，採用該音 箱結構20之移動電話100可提高發聲之低頻共振效 果，提高揚聲器低音單元之輻射效率，擴展頻帶之寬 度，從而提升聲音之質感與豐富感，使聲音響度適當 並趨於穩定，避免鈴聲尖銳化或破音現象之發生，進IX. Description of the Invention: [Technical Field] The present invention relates to a speaker structure ‘in particular to a speaker structure of a mobile electronic device. [Prior Art]. With the rapid development of the information industry, the demand for mobile electronic devices such as mobile telephones and personal digital assistants (pDAs) has increased significantly. As the communication tool, the most basic function of a mobile phone is to transmit sound signals. In order to transmit a sound signal, an electroacoustic conversion element is required to convert the sound signal into an electrical signal, or to convert the electrical signal into a structural vibration to generate sound. Among them, the widely used electroacoustic conversion component that converts a telecommunication signal into a sonar is a speaker (L〇u (jSpeaker) 〇 In recent years, the size of a speaker used in a mobile phone has been developed due to the continuous development of a mobile phone in a light and short direction. In order to make the sound of the speaker resonate well, the speaker housing is usually placed directly in the internal space of the mobile phone, and the speaker is housed therein to serve as a speaker for the speaker, and the sound quality of the mobile phone is improved. However, 'the mobile phone is constantly moving towards a light and short direction, and the internal space of the mobile phone is also reduced', which reduces the effective volume of the speaker speaker, thereby increasing the low-frequency resonance frequency of the speaker. The increase of the resonance frequency will reduce the bass performance of the speaker and improve the distortion of the speaker, so that the sound quality of the mobile phone is 1323135. [Invention] In view of this, it is necessary to provide a speaker structure with improved sound quality and Mobile electronic device using the speaker structure. The speaker structure comprises a speaker housing and a speaker disposed in the speaker housing, wherein the speaker housing is formed with a front sound chamber and a rear sound chamber, and the speaker is disposed between the front sound chamber and the rear sound chamber, The front sound chamber is provided with a sound hole communicating with the outside, and the front sound room and the rear sound room are connected by a sound tube. A mobile electronic device includes a casing, and the sound hole is arranged on the outer casing, The speaker structure is arranged in the outer casing, the speaker structure comprises a speaker housing, a speaker disposed in the speaker housing, and a circuit board electrically connected to the speaker, wherein the speaker housing is formed with a front sound chamber and a rear sound chamber, the speaker The sound chamber is disposed between the front sound chamber and the rear sound chamber, and the sound chamber is provided with a sound hole corresponding to the sound hole on the outer casing, and the sound chamber is connected between the front sound chamber and the rear sound chamber. Compared with the prior art, the front and rear acoustic chamber structures are respectively formed in the speaker structure, and the sound waves emitted from the speaker forward and backward respectively enter the front and rear sound chambers to generate resonance, and the sound is generated by the sound guide tube Front sound room The rear sound chamber is connected. Due to the communication of the sound guiding tube, the speaker and the rear sound chamber form an inverted speaker structure, and the sound waves emitted by the rear sound chamber are superimposed with the sound waves of the front sound room and are resonated and transmitted to the outside. Therefore, the low frequency resonance frequency of the speaker structure is effectively reduced, the width of the frequency band is extended, and the radiation efficiency of the woofer unit is improved, thereby improving the sound quality of the mobile phone. Embodiments Hereinafter, further description will be made with reference to the accompanying drawings. 1 is a schematic structural view of a mobile phone 100 according to an embodiment of the mobile electronic device of the present invention. The mobile phone 100 includes a phone case 10, and the phone case 10 has a substantially rectangular parallelepiped structure. The bottom area forms a button area 11, the central area forms a display area 12, and the top end forms a sounding area 13. The sound emitting area 13 is provided with a sound hole 132 on the side wall. Referring to FIG. 1 and FIG. 2, a speaker structure 2 is disposed inside the phone housing 1 at a position corresponding to the sound emitting area 13 of the mobile phone 100. The speaker structure 20 includes a circuit board 30, a frame body 4, and a frame. The speaker 50 and a speaker housing 60. The speaker 50 is placed in the speaker housing 6〇, and the housing 4 is interposed between the speaker housing 60 and the circuit board 30, thereby forming the speaker structure 20. Of course, the speaker structure 2 can be applied to various types of folding mobile phones or electronic devices in addition to the bar type mobile phone 100 shown in FIG. Referring to FIG. 2 to FIG. 4, the speaker housing 60 is a rectangular semi-closed structure which is surrounded by a bottom plate 61 and four side plates 62, 63, 64 and 65 to form a receiving space. The top surfaces of the side plates 62, 63, 64 and 65 are all located on the same plane so as to be in close contact with the frame body 4. Referring to Figures 4 and 5, the bottom plate 61 of the speaker housing 6 extends in the direction in which the four side plates 62, 63, 64 and 65 extend to form a circular tubular wall 66. The annular wall 66 protrudes inwardly from one end of the bottom plate 61 and has an annular flange 661. The flange 661 is in contact with the bottom plate 61 and is enclosed to form a first cavity 60a. The ring wall 66 and the flange 661 The top end is rounded to form a second cavity 60b. The speaker housing 60 is further provided with a partition 67 connecting the annular wall 66 and the side plate 62, and a partition 68 connecting the annular wall 66 and the side plate 65. The bottom plate 61, the annular wall 66, the partitions 67, 68, and the side plates 62, 65 are enclosed to form a third cavity 60c; the bottom plate 61, the ring wall 66, the partitions 67, 68, and the side plates 62, 63, 64, 65 is enclosed to form a fourth cavity 60d. The top surfaces of the partitions 67, 68 are coplanar with the top surfaces of the side plates 62, 65, and the top surface of the portion of the ring wall 66 that is in contact with the third cavity 60c is coplanar with the top surfaces of the side plates 62, 65. The top surface of the portion of the annular wall 66 that meets the fourth cavity 60d is lower than the top surface of the side plates 62, 65, and the second cavity 6b and the fourth cavity 6 are separated by the height difference. 〇d is connected. A groove 662 is defined at an upper end of the annular wall 66 and the fourth cavity 60d. The flange 661 of the ring wall 66 is provided with a sound hole 663 corresponding to the third cavity 6 (the sound hole 663 communicates with the first cavity 60a and the second cavity 60c. Of course, The ring wall 66 can also be attached to the side plate 62 to omit the partition plate 67, and the third cavity 60c and the fourth cavity 60d can be formed. The side plate 65 is provided with a sound hole 651. The hole 651 is disposed corresponding to the sound hole 132 of the telephone peripheral 10, and communicates the third cavity 6〇c with the surrounding environment. A sound guiding tube 69 is disposed between the bottom of the partition 68 and the bottom plate 61. The sound tube 69 is a semi-circular tube body and is surrounded by the bottom plate 61 to form a sound channel, and the sound guiding tube 69 has an L-shaped structure as a whole. The 1323135 sound tube 69 is disposed in the third cavity body and is provided. The sound tube 69 communicates the second cavity 60c with the fourth cavity 6〇d. The L-shaped structure of the sound guiding tube 69 is such that it can be obtained in the limited space of the third cavity 6〇c. The length of the long sound is set to the sound hole 651 of the side plate 65. Referring to FIG. 2 and FIG. 3, the speaker 5 is a cylindrical structure, and the front surface of the speaker 50 is provided. There are a plurality of front sound holes 52 (shown in FIG. 3). The back surface of the speaker 50 is provided with a plurality of sound holes 54 (shown in FIG. 2). A speaker 56 is provided on the side of the speaker 50. The speaker 5 is provided. 〇Electrical connection to the circuit; fe3G, secretly converts the 3G input signal of the circuit board into sound waves' and transmits it through the front sound hole 52 and the rear sound hole 54. The speaker 50 can be assembled in the speaker housing In the ring wall 66 of the 60, the sound hole 52 of the speaker 50 faces the first cavity 6〇a before assembly, and the front surface of the speaker 50 abuts the top surface of the flange 661 to utilize the speaker 50. The first cavity 60a and the second cavity 60b are separated, and the lug 56 of the speaker 50 is closely matched with the groove 662 of the ring wall 66 to fix the speaker 50 in the second cavity 6〇b. Referring to FIG. 2, FIG. 3 and FIG. 6, the frame body 40 is made of a vibration-damping material such as rubber or fiberglass cloth, and the frame body 4 is disposed on the side plates 62, 63, 64 and 65 of the acoustic housing 60. And the top surface of the partitions 67, 68 (shown in FIG. 6), and is interposed between the speaker housing 60 and the circuit board 30. The frame 40 includes an outer frame 41 and is disposed thereon. An inner frame 42 in the frame 41. The outer frame 41 and the inner frame 42 are a sheet structure having the same thickness and width. The shape of the outer frame 41 and the side plates 62, 10 1323135 63, 64 of the acoustic housing 60 And the shape of the top surface of the 65 is substantially the same, but the width of the outer frame 41 is greater than the width of the top surfaces of the side plates 62, 63, 64 and 65. The shape of the inner frame 42 and the partition 67, the ring wall 66 and the The three cavity 60c abutting portion and the top surface of the partition plate 68 are substantially identical in shape. The frame body 4 is sandwiched between the side plates 62, 63, 64 and 65 of the casing 60 and the partition plate 67. Between the top surface of the 68 and the circuit board 30, the contact between the frame 4 and the circuit board 3 and the speaker housing 60 is sufficiently filled and bonded by a dry agent (not shown) to fill the gap. a gap between the circuit board 3 and the speaker housing 60, so that the third cavity 6〇c and the fourth cavity 60d are connected by the sound tube 69 to achieve vibration suppression and prevent the third cavity 6〇c And the effect of sound leakage in the fourth cavity 60d. After assembly, the first cavity 60a and the third cavity 60c communicate with each other through the sound hole 663 to form a front acoustic chamber 61a; the second cavity 60b and the fourth cavity 60d are topped by the annular wall 66 The height difference is connected to form a rear acoustic chamber 61b, and the rear acoustic chamber 61b communicates with the front acoustic chamber 61a via the sound guide tube 69. The sound waves emitted from the front sound hole 52 and the rear sound hole 54 of the speaker 50 respectively enter the front sound chamber 61a and the rear sound chamber 61b to resonate and pass through the sound hole 651 on the side plate 65 of the speaker casing 60. Radiation to the outside world. The sound wave emitted by the front sound hole 52 of the speaker 50 resonates with the air in the front sound chamber 61a and is radiated to the outside through the sound hole 651; the sound wave emitted from the rear sound hole 54 of the speaker 5 and thereafter The air in the acoustic chamber 61b resonates and is transmitted to the front acoustic chamber 61a by the sound guiding tube 69, superimposed with the sound of the front sound chamber 6U and the air in the front acoustic chamber 61a. Resonance occurs and is radiated to the outside through the sound hole 651. The combination of the speaker 50 and the rear acoustic chamber 61b is the same as that of the inverted speaker. The sound wave radiated from the sound hole 54 after the speaker 50 radiates out in phase and from the sound hole 52 of the speaker 50. The sound wave is inverted, but the sound tube 69 reverses the phase of the sound wave radiated by the rear sound hole 54 by 180 degrees, so that the sound wave transmitted from the rear sound chamber 61b to the front sound chamber 61a via the sound guide tube 69 and the speaker 50 are before. The sound waves radiated from the sound hole 52 are superimposed in phase when reaching the front sound chamber 61a, so the speaker structure 20 can provide a wider frequency band than when the sound guide tube 69 is absent, and the peak of the resonance frequency is shifted to the low frequency. , reduce the low frequency resonance frequency, thereby improving the low frequency resonance effect of the vocalization. Since the nozzle of the sound guiding tube 69 is disposed in alignment with the sound hole 651, it is convenient to directly radiate the sound transmitted from the sound guiding tube 69 to the outside, thereby improving the radiation efficiency of the sound wave in the rear sound chamber 61b. According to the analogy of the acoustic-vibration analysis software SYSNOISE, when the sound guide tube 69 is not disposed in the speaker enclosure 60, the lowest resonance frequencies of the front and rear acoustic chambers 61a, 61b are 3000 Hz and 6500 Hz, respectively; After the sound guide tube 69, the front and rear acoustic chambers 61a, 61b communicate with each other, and the lowest resonance frequency is 494 Hz. It can be seen that the mobile phone 100 adopting the speaker structure 20 can improve the low-frequency resonance effect of the vocalization, improve the radiation efficiency of the speaker woofer, and expand the width of the frequency band, thereby improving the texture and richness of the sound, and making the sound sound sound appropriate. Stable, avoiding the sharpening or broken sound of the ringtone
C S 12 而獲得良好之發聲品質。 另外，上述音箱結構20中由於夾設了框體40，可 防止音箱結構20漏出聲波，使聲音之頻率特性趨於穩 定；同時，該框體40由制振材料製成，可降低由於揚 聲器50之發聲所引起之揚聲器50與電路板30間共振 之傳遞’從而可避免聲音受到干擾，提升移動電話1〇〇 之發聲品質。 請參照圖7，其所示爲本發明第二實施例之示意 圖’其與第一實施例之不同之處在於，該音箱殼體7〇 中之導音管79設於該第四腔體60d内，且其自由端之 管口朝向與出音孔651相反之方向，即朝向聲波來源 之方向。根據倒相式音箱之原理可知，該導音管79可 達成與第一實施例中導音管69同樣之功效，即提高該 音箱殼體70之低頻共振效果。 請參照圖8，其所示爲本發明第三實施例之示意 圖’其與第一實施例之不同之處在於，該音箱殼體8〇 中之導音管89爲一直管，該第三腔體80c由底板81、側 板83、84、隔板87、88及環墙86合圍而成，該側板83 上設有一出音孔832將該第三腔體80c與外界連通，相 應地’該第四腔體80d由底板81、側板82、83、84、 85、隔板87、88及環墙86合圍而形成。該導音管89可 達成與第一實施例中導音管69同樣之功效，即提高該 音箱殼體80之低頻共振效果’且藉由該第三腔體8〇c 及第四腔體80d之設置，可將該音箱結構80之出音孔 13 1323135 . 832設置在相對第一實施例中之出音孔651之另一側。 由以上敘述可知，藉由該等導音管69、79及89之 設置，將該前、後音響室61a、61b相連通，使該後音 響室61b發出之聲波與該前音響室61a之聲波叠加並且 共振後傳遞至外界，從而有效地降低該音箱結構20之 低頻共振頻率，擴展頻帶之寬度，提高揚聲器低音單 元之輻射效率，進而提升移動電話100之發聲品質。 綜上所述，本發明符合發明專利要件，爰依法提 • 出專利申請。惟，以上所述者僅為本發明之較佳實施 例，舉凡熟悉本案技藝之人士，在爰依本發明精神所 作之等效修飾或變化，皆應涵蓋於以下之申請專利範 圍内。 【圖式簡單說明】 圖1爲本發明移動電子設備（以移動電話爲例）其中一 實施例之結構示意圖。 圖2爲圖1所示移動電話内之音箱結構沿第一視角之 立體分解圖。 圖3爲圖2所示音箱結構沿第二視角之立體分解圖。 圖4爲圖2所示音箱結構中之音箱殼體之立體圖。 圖5爲圖2所示音箱結構中之音箱殼體之俯視圖。 圖6爲圖2所示音箱結構之部分組裝圖。 圖7爲本發明移動電子設備第二實施例中音箱殼體 之立體圖。 圖8爲本發明移動電子設備第三實施例中音箱殼體 14 1323135 之立體圖。 【主要元件符號說明】 移動電話 100 按鍵區 11 顯不區 12 發聲區 13 出音孔 132 音箱結構 20 電路板 30 框體 40 内框 41 外框 42 • 揚聲器 50 前出音孔 52 後出音孔 54 凸耳 56 音箱殼體 60 、 70 、 80 第一腔體 60a 第二腔體 60b 第三腔體 60c - 第四腔體 60d 底板 61 ' 81 前音響室 61a 後音響室 61b 側板 62、63、64、 65 ' 82、83 、84 ' 85 出音孔 651 ' 832 環牆 66 ' 86 • 凸緣 661 凹槽 662 通音孔 663 > 863 導音管 69、79、89 隔板 67、68、87、88 15C S 12 and get good vocal quality. In addition, in the speaker structure 20, since the frame 40 is interposed, the sound structure of the speaker structure 20 can be prevented from leaking out, and the frequency characteristic of the sound tends to be stable. Meanwhile, the frame 40 is made of a vibration-damping material, which can be reduced by the speaker 50. The transmission of resonance between the speaker 50 and the circuit board 30 caused by the sounding can prevent the sound from being disturbed, and improve the sound quality of the mobile phone. Please refer to FIG. 7, which is a schematic view of a second embodiment of the present invention. The difference from the first embodiment is that the sound guiding tube 79 in the speaker housing 7 is disposed in the fourth cavity 60d. The nozzle at the free end thereof faces in the opposite direction to the sound hole 651, that is, in the direction of the source of the sound wave. According to the principle of the inverted speaker, the sound guiding tube 79 can achieve the same effect as the sound guiding tube 69 of the first embodiment, that is, the low frequency resonance effect of the speaker housing 70 is improved. Please refer to FIG. 8 , which is a schematic view of a third embodiment of the present invention. The difference from the first embodiment is that the sound tube 89 in the speaker housing 8 is a straight tube, and the third chamber is The body 80c is formed by a bottom plate 81, side plates 83, 84, partitions 87, 88 and a ring wall 86. The side plate 83 is provided with a sound hole 832 for communicating the third cavity 80c with the outside, correspondingly The four-chamber 80d is formed by the bottom plate 81, the side plates 82, 83, 84, 85, the partition plates 87, 88, and the ring wall 86. The sound guiding tube 89 can achieve the same effect as the sound guiding tube 69 in the first embodiment, that is, to improve the low frequency resonance effect of the speaker housing 80 and by the third cavity 8〇c and the fourth cavity 80d. The sound hole 13 1323135 . 832 of the speaker structure 80 can be disposed on the other side of the sound hole 651 in the first embodiment. As apparent from the above description, the front and rear acoustic chambers 61a and 61b are connected by the arrangement of the sound guiding tubes 69, 79, and 89, so that the sound waves emitted from the rear acoustic chamber 61b and the sound waves of the front acoustic chamber 61a are obtained. Superimposed and transmitted to the outside after resonance, thereby effectively reducing the low frequency resonance frequency of the speaker structure 20, expanding the width of the frequency band, and improving the radiation efficiency of the speaker woofer, thereby improving the sound quality of the mobile phone 100. In summary, the present invention complies with the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of an embodiment of a mobile electronic device (taking a mobile phone as an example) of the present invention. 2 is an exploded perspective view of the speaker structure in the mobile phone of FIG. 1 along a first viewing angle. 3 is an exploded perspective view of the speaker structure of FIG. 2 along a second viewing angle. 4 is a perspective view of the speaker housing in the speaker structure shown in FIG. 2. FIG. 5 is a top plan view of the speaker housing in the speaker structure shown in FIG. 2. FIG. Figure 6 is a partial assembled view of the speaker structure shown in Figure 2. Figure 7 is a perspective view of a speaker housing in a second embodiment of the mobile electronic device of the present invention. Figure 8 is a perspective view of a speaker housing 14 1323135 in a third embodiment of the mobile electronic device of the present invention. [Main component symbol description] Mobile phone 100 Key area 11 Display area 12 Sound area 13 Sound hole 132 Speaker structure 20 Circuit board 30 Frame 40 Inner frame 41 Frame 42 • Speaker 50 Front sound hole 52 Rear sound hole 54 lug 56 speaker housing 60, 70, 80 first cavity 60a second cavity 60b third cavity 60c - fourth cavity 60d bottom plate 61' 81 front sound room 61a rear sound room 61b side plates 62, 63, 64, 65 ' 82, 83, 84 ' 85 sound hole 651 ' 832 ring wall 66 ' 86 • flange 661 groove 662 sound hole 663 > 863 sound tube 69, 79, 89 partition 67, 68, 87, 88 15