JP2004318843A - Portable information processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable information processing device that substantially saves on a space and protects speakers while maintaining a stereo sound output of high sound quality, and prevents an intrusion of rain, dust and the like in outdoor use. <P>SOLUTION: The portable information processing device comprises a body part 1, a display part 3 with a built-in display panel 4, a back casing 7 of the display part 3, and speaker units 5 stored between the display panel 4 and the back casing 7. The back casing 7 has sound emission holes 7b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a portable information processing device having a built-in speaker unit.

  2. Description of the Related Art In recent years, information processing apparatuses such as personal computers have been equipped with a function called multimedia for processing video and audio due to improvements in performance. Under such circumstances, portable information processing apparatuses such as notebook personal computers have come to include a speaker that is an audio output function for reproducing high-quality sound. Such a notebook personal computer is disclosed, for example, in Patent Document 1.

  Hereinafter, a conventional portable information processing apparatus having a speaker will be described with reference to FIG.

  FIG. 6 is an external perspective view showing a conventional example of a notebook personal computer which is a portable information processing device. In FIG. 6, the notebook computer 10 includes a main body 12, a keyboard 14, a display device 16, a display panel 18, and a speaker panel 20. The display panel 18 is thin using a liquid crystal display or a plasma display. The display device 16 is freely opened and closed with respect to the main body 12 and is connected to the main body 12. When the display device 16 is closed, the upper end 16 </ b> A of the display device 16 is locked while being close to the main body 12. The speaker panel 20 has a flat plate shape as a whole, and is slidably mounted through a storage opening 22 provided in the display device side surface 16B. The speaker panel 20 is stored in the display device 16 when not in use. The speaker panel 20 is pulled out from the display device side surfaces 16B through the storage opening 22 during sound reproduction. That is, the speaker panel 20 is moved in and out in the direction of arrow 20A.

By doing so, the notebook computer, which is a conventional portable information processing device, aims to obtain high-quality stereo sound output when used, and to store the speakers when not in use, such as when carrying, to save space. ing.
JP-A-2002-359890

  However, in the above-mentioned conventional portable information processing apparatus, since the speaker panel 20 is pulled out to the left and right and used, a space for using the speaker is required. Therefore, the space is not substantially reduced. Further, there is a problem that it is necessary to take time to pull out the speaker panel 20, and furthermore, the speaker may be damaged when being pulled out.

  In addition, when the above-mentioned conventional portable information processing device is carried outdoors and used outdoors, it is easy for sudden rain or dust to enter the inside of the device, and these intrusions may affect internal devices such as a display panel. There is also the problem of giving.

  In order to solve the above problems, a portable information processing apparatus of the present invention includes a main body, a display unit which is attached to the main body so as to be openable and closable, and has a display panel built therein, a rear housing of the display unit, A speaker unit is provided between the body and the display panel, and the rear housing has a first sound emission hole for emitting sound from the speaker unit.

  The present invention provides a portable information processing apparatus having the above-described configuration and capable of substantially saving space and protecting speakers while maintaining high-quality stereo sound output. Further, the present invention provides a portable information processing device capable of preventing rain, dust, and the like from entering when used outdoors. Further, the present invention provides a portable information processing apparatus capable of maintaining high-quality stereo sound output not only when the display unit is opened but also when the display unit is closed.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.

(Embodiment 1)
FIG. 1 is an external perspective view showing a state in which a display unit of a notebook personal computer, which is a portable information processing device according to an embodiment of the present invention, is open. FIG. 2 is an external perspective view showing a state in which a display unit of a notebook personal computer, which is a portable information processing device according to an embodiment of the present invention, is closed. FIG. 3 is a cross-sectional view of a speaker storage portion of a notebook computer which is a portable information processing device according to one embodiment of the present invention. FIG. 4 is an exploded perspective view showing a speaker storage portion of a notebook personal computer which is a portable information processing device according to one embodiment of the present invention. FIG. 5 is an external view showing a state in which a display unit of a notebook personal computer, which is a portable information processing device according to an embodiment of the present invention, is closed. 1 to 5, the main unit 1 contains a circuit for executing information processing as a personal computer, a memory, a storage device, an input / output interface with an external device, and the like. Various keys are arranged in a predetermined arrangement on the keyboard 2. The display unit 3 houses a display panel 4. The rear surface of the display unit 3 is covered with a rear housing 7. Since a liquid crystal display device or a plasma display is used as the display panel 4, the display unit 3 is thin. The speaker unit 5 is a flat speaker. In the present embodiment, a flat piezoelectric speaker is used as the speaker unit 5 as an example. The speaker unit 5 is attached to the rear housing 7 of the display unit 3 with a fastening component such as a screw via a sealing material 6.

  The fastening parts such as the screws are not shown. Further, the sealing material 6 is formed of an elastic sheet material. The sealing material 6 prevents sound emitted to the rear side of the speaker unit 5 from wrapping around the front side and causing interference with sound emission on the front side of the speaker unit 5. Furthermore, the sealing material 6 can completely prevent rain or dust from entering the inside of the device from the sound emission holes 7b that could not be prevented by the mesh-shaped waterproof sheet 8. Further, it is difficult to transmit the vibration of the speaker unit 5 to the rear housing 7.

  The display unit 3 is connected to the main body 1 so as to be openable and closable with respect to the main body 1. The rear housing 7 of the display unit 3 has an uneven back surface, and a plurality of first sound emission holes 7b (hereinafter, referred to as sound emission holes 7b) are provided on right and left rising surfaces 7a of the uneven shape. Is provided. The mesh-shaped waterproof sheet 8 is attached so as to cover the sound emission hole 7b. The mesh-shaped waterproof sheet 8 is a metal sheet in which many round holes are opened in a mesh shape. The diameter of these holes is between 100 and 500 microns. The hole diameter of 100 to 500 microns is a diameter that can emit sound but cannot easily penetrate rain or dust. Preferably, about 70 holes having a diameter of about 300 microns are provided in 1 inch square.

  By providing the sound emission hole 7b on the rising surface 7a of the rear housing 7 in this way, the appearance is not impaired, and rain or dust can enter when the display section of the notebook computer is closed when used outdoors. It becomes difficult.

  In addition, second sound output holes 3a, 3b, 3c, 3d (hereinafter referred to as sound output holes 3a, 3b, 3c, 3d) are provided at the end of the front surface of the display unit 3. The sound emission hole 3a is located at the upper end of the front surface of the display unit 3, and the sound emission hole 3b is located at the lower end of the front surface of the display unit 3. The sound emission hole 3c is located at the left end of the front surface of the display unit 3, and the sound emission hole 3d is located at the right end of the front surface of the display unit 3. From the sound output hole 3c, the left sound output hole 3a, and the left sound output hole 3b, sound generated mainly in the left speaker unit 5 is output. The sound generated mainly by the right speaker unit 5 is emitted from the sound output hole 3d, the right sound output hole 3a, and the right sound output hole 3b.

  As described above, since the sound emission holes are provided at at least one end of the front surface of the display unit 3, it is possible to obtain higher-quality sound output even when the speaker unit 5 is housed in the display unit housing. . Furthermore, even a stereo sound can be faithfully emitted.

  Further, as shown in FIG. 3, the sound emission gap 7c is located between the periphery of the display panel 4 and the periphery of the rear housing 7 and exists on the left and right. Sound is also efficiently emitted from the sound emitting gap 7c. The sound mainly generated by the left speaker unit 5 is emitted from the left sound emitting gap 7c, and the sound mainly generated by the right speaker unit 5 is emitted from the right sound emitting gap 7c. .

  Next, a storage example of the speaker unit 5 will be further described with reference to FIG. In FIG. 4, a wall 7 e is provided on the rear housing 7. The wall 7e, the rising surface 7a, and the rear housing 7 form an open box on the surface facing the display panel 4. The speaker unit 5 is mounted on the open surface of the box. That is, the box formed by the wall 7e, the rising surface 7a, and the rear housing 7 functions as a so-called speaker box. By giving the function of the speaker box in this way, it is possible to reproduce sound of higher sound quality. Further, the shape and volume of the box formed by the wall 7e, the rising surface 7a, and the rear housing 7 affect a sound range and sound quality to be reproduced. Therefore, the shape and volume of the box may be determined so that a desired sound range and sound quality can be obtained. When a plurality of speakers having different sound ranges are used, a convenient box may be individually formed in each sound range.

  Note that the speaker unit 5 is attached to the rising surface 7a of the rear housing 7 with fastening parts such as screws. In FIG. 4, fastening parts such as screws are not shown. In FIG. 4, the illustration of the sealing material 6 is omitted.

  Next, storage of an audio amplifier for driving the speaker unit 5 will be described with reference to FIG. In FIG. 5, an audio amplifier 5a receives an audio signal output from a circuit housed in the main body 1. The audio amplifier 5 a power-amplifies the received audio signal and drives the speaker unit 5. Then, a sound is output from the speaker unit 5. Since the audio amplifier 5a functions to drive the speaker unit 5 by power-amplifying the audio signal, the audio amplifier 5a necessarily generates heat. By the way, the audio amplifier 5 a is attached to the rear housing 7 in a state where heat transfer between the audio amplifier 5 a and the rear housing 7 is good. The rear case 7 is formed of a magnesium alloy and has a very good thermal conductivity. Therefore, the rear housing 7 is equivalent to a heat radiator having high efficiency for the audio amplifier 5a, and efficient heat radiation of the audio amplifier 5a is realized.

  By the way, as can be seen from FIGS. 2 and 5, the right and left rising surfaces 7a are not parallel to each other, but have a relationship of being inclined to each other. Assuming that the left and right rising surfaces 7a are parallel to each other, interference of sound emitted through the sound emission holes 7b provided in the left and right rising surfaces 7a becomes a problem. That is, a fixed sound field directivity depending on the frequency of the sound is generated. However, in FIG. 2 and FIG. 5, the speaker units 5 are arranged along the left and right rising surfaces 7a which are inclined to each other, and the sound emission holes 7b are respectively formed in the left and right rising surfaces 7a which are inclined to each other. A plurality are formed. By doing so, the distance between the left and right sound emission holes 7b is no longer a constant value. Therefore, it is possible to suppress the fixed sound field directivity depending on the frequency of the sound. That is, the same effect as suppressing sound interference can be obtained. Since sound interference can be suppressed, the amount of attenuation of the sound volume can be reduced. Therefore, the volume can be increased.

  Next, the state of the inner surface of the rear housing 7 will be described with reference to FIG. In FIG. 4, dimples 7 d are provided on the inner surface of the rear housing 7. Due to the provision of the dimples 7d, the inner surface of the rear housing 7 has not a smooth flat surface but an uneven surface. The sound generated by the speaker unit 5 is reflected on a surface inside the rear housing 7. Due to the presence of such irregularities, components reflected from the inner surface of the rear housing 7 have components that are out of phase with each other. As a result, interference of sound emitted through the sound emission holes 7b provided on the left and right rising surfaces 7a can be further suppressed. That is, since sound interference can be further suppressed, the amount of attenuation of the sound volume can be further reduced. Therefore, the volume can be further increased.

  Further, as shown in FIGS. 1 and 3, a mesh sheet 9 is also attached to a gap between the periphery of the display panel 4 and the periphery of the rear housing 7. The hole diameter of this sheet 9 is about 500 to 1000 microns, which is a diameter capable of preventing foreign matter from entering.

  As described above, the portable information processing apparatus of the present invention accommodates the speaker unit between the rear housing of the display unit and the display panel, and has the sound emitting hole of the speaker unit in the rear housing. The rear housing has an uneven surface, and a sound emitting hole of the speaker unit may be provided on the rising surface of the uneven surface. In addition, a sound emission hole may be provided at the edge of the front surface of the display unit 3, and a sound emission gap may be provided between the periphery of the display panel and the periphery of the rear housing. A mesh sheet is attached to the sound emission hole.

  With such a configuration, the portable information processing device of the present invention can save substantial space and protect speakers while maintaining high-quality stereo sound output, and furthermore, can be used outdoors. Intrusion of rain and dust can be prevented.

  In addition, the portable information processing apparatus of the present invention has excellent rising range and sound quality by suppressing the sound interference by setting the rising surfaces to be inclined with respect to each other or by setting dimples on the surface of the rear housing. Can be realized. Further, the portable information processing device of the present invention forms a so-called speaker box with a rear housing, a rising surface, and a wall provided on the rear housing, and installs speakers in the speaker box to provide an excellent sound range. And sound quality.

  ADVANTAGE OF THE INVENTION The portable information processing apparatus of this invention can save a space substantially, can protect a speaker, and maintains a display part not only in a state where a display part is open, while maintaining high-quality stereo sound output. It has the effect of maintaining high-quality stereo audio output even in the closed state, and is useful as a portable information processing device or the like with a built-in speaker unit.

FIG. 1 is an external perspective view showing a state in which a display unit of a notebook personal computer, which is a portable information processing apparatus according to an embodiment of the present invention, is open. FIG. 1 is an external perspective view illustrating a notebook computer, which is a portable information processing apparatus according to an embodiment of the present invention, with a display unit closed. Sectional view of a speaker storage portion of a notebook personal computer which is a portable information processing device according to an embodiment of the present invention. FIG. 1 is an exploded perspective view showing a speaker storage portion of a notebook computer which is a portable information processing device according to an embodiment of the present invention. FIG. 1 is an external view illustrating a portable information processing apparatus according to an embodiment of the present invention, in which a display unit of a notebook computer is closed. External perspective view showing a conventional notebook computer

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Main body part 2 Keyboard 3 Display part 3a, 3b, 3c, 3d 2nd sound emission hole 4 Display panel 5 Speaker unit 6 Sealing material 7 Rear housing 7a Rising surface 7b 1st sound emission hole 7c Sound emission gap 7d Dimple 7e wall 8 waterproof sheet 9 mesh sheet

Claims (19)

A main unit, a display unit that is attached to the main unit so as to be openable and closable, and has a built-in display panel; a rear housing of the display unit; and a speaker unit housed between the rear housing and the display panel. A portable information processing device, comprising: a first sound emitting hole for emitting sound from the speaker unit; The portable information processing apparatus according to claim 1, further comprising a mesh-shaped waterproof sheet attached so as to cover the first sound output hole. 3. The portable information processing apparatus according to claim 2, wherein the pore size of the mesh of the waterproof sheet is 100 to 500 microns. 2. The portable information processing apparatus according to claim 1, wherein the rear housing has an uneven shape, and the first sound emission hole is provided on a rising surface of the uneven shape. The portable information processing apparatus according to claim 4, wherein the rising surface is provided at a symmetrical position on the rear housing, and the first sound emission hole is provided at each of the rising surfaces. The portable information processing device according to claim 1, wherein the speaker unit is attached to the rear housing via a sealing material. 2. The portable information processing apparatus according to claim 1, further comprising a sound emission gap located between a periphery of the display panel and a periphery of the rear housing, wherein the sound emission gap is used for sound emission. 8. The portable information processing apparatus according to claim 7, further comprising a mesh sheet attached so as to close the sound emitting gap. 9. The portable information processing device according to claim 8, wherein the mesh has a hole diameter of 500 to 1000 microns. 6. The portable information processing apparatus according to claim 5, wherein the rising surfaces are in an inclined relationship with each other. 2. The portable information processing device according to claim 1, wherein the display unit has a second sound output hole at an end of the front surface. 12. The portable information processing apparatus according to claim 11, wherein the second sound output hole is provided in a portion of the end located on the left and right of the front surface of the display unit. 12. The portable information processing apparatus according to claim 11, wherein the second sound output hole is provided in a portion of the end located above and below a front surface of the display unit. The portable information processing apparatus according to claim 4, wherein the rear housing further has a wall, a speaker box is formed by the rear housing, the rising surface, and the wall, and a speaker unit is attached to the speaker box. 15. The portable information processing device according to claim 14, wherein the speaker unit is fixed on a rising surface. 2. The portable information processing device according to claim 1, wherein the rear housing is formed of a magnesium alloy. 2. The portable information processing apparatus according to claim 1, wherein dimples are provided on a surface inside the rear housing. 2. The portable information processing apparatus according to claim 1, further comprising an audio amplifier for driving a speaker unit, wherein the audio amplifier is fixed to the rear housing so as to dissipate heat via the rear housing. 2. The portable information processing apparatus according to claim 1, wherein the speaker unit is a flat piezoelectric speaker.

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