JP4196002B2 - Portable information processing device - Google Patents

Description

  The present invention relates to a portable information processing apparatus incorporating a 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 that processes video and audio due to the improvement in performance. Under such circumstances, portable information processing devices such as notebook personal computers have come to be equipped with a speaker that is an audio output function for reproducing high-quality sound. Such a notebook personal computer is disclosed in Patent Document 1, for example.

  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 apparatus. 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 openable and closable with respect to the main body 12 and is coupled to the main body 12. When the display device 16 is closed, the upper end portion 16 </ b> A of the display device 16 is locked in the state of being close to the main body 12. The speaker panel 20 has a flat plate shape as a whole and is slidably attached through a storage port 22 provided on the side surface 16B of the display device. The speaker panel 20 is accommodated in the display device 16 when not in use. The speaker panel 20 is pulled out from the both side surfaces 16B of the display device through the storage opening 22 during audio reproduction. That is, the speaker panel 20 is put in and out in the direction of the arrow 20A.

In this way, notebook computers, which are conventional portable information processing devices, aim to obtain high-quality stereo sound output when used, and to save space by storing speakers when not in use, such as when carrying them. ing.
JP 2002-359890 A

  However, in the above-described conventional portable information processing apparatus, the speaker panel 20 is pulled out to the left and right for use, so that a space for using the speaker is required. Therefore, there is no substantial space saving. In addition, it takes time to pull out the speaker panel 20, and there is a problem that the speaker may be damaged when it is pulled out.

  In addition, when the above-described conventional portable information processing device is carried outdoors and used outdoors, it is easy to invade the inside of equipment such as unexpected rain and dust, and these intrusions affect the internal devices such as the display panel. There is also the problem of giving.

In order to solve the above-described problems, a portable information processing device according to the present invention includes a main body, a display unit including a display panel attached to the main body so as to be opened and closed, a rear housing of the display unit, and the display. And a speaker unit housed between the panel and the rear portion of the rear housing is formed in a concavo-convex shape to form a non-parallel and bilaterally symmetric rising surface on the left and right sides of the rear housing, and A plurality of sound emitting holes for emitting the sound of the speaker unit are formed on each rising surface, and each speaker box is formed by the rear housing, the rising surface formed on the rear housing, and a wall formed on the rear housing. A speaker unit is mounted at each position of the open surface of the speaker box that is configured and faces the display panel.

The present invention provides a speaker box for a speaker unit provided between the display panel built in the display unit and the rear case of the display unit as described above, and the rising surface formed on the rear case. And a wall formed on the rear housing thereof, it is possible to obtain a high-quality stereo sound output with substantial space saving. High-quality stereo sound output with reduced sound interference not only when the display unit is open, but also when the display unit is closed is obtained from the parallel sound emission holes on the symmetric rising surfaces. It is something that can be done. In addition, when a conventional speaker is used outdoors such as a drawer type, it is possible to prevent rain and dust from entering.
Further, according to the present invention, an output of the speaker unit is further provided by the unevenness formed by attaching the speaker unit to the rising surface of the rear housing and providing dimples on the inner surface of the rear housing constituting a part of the speaker box. There is an effect that the interference of sound can be suppressed.

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

(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 apparatus according to an embodiment of the present invention is opened. 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 apparatus according to an embodiment of the present invention is closed. FIG. 3 is a cross-sectional view of a speaker housing portion of a notebook personal computer that is a portable information processing apparatus according to an embodiment of the present invention. FIG. 4 is an exploded perspective view showing a speaker housing portion of a notebook personal computer which is a portable information processing apparatus according to an 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 apparatus according to an embodiment of the present invention is closed. 1 to 5, the main body 1 stores 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. A display panel 4 is housed in the display unit 3. Further, the back surface of the display unit 3 is covered with a back housing 7. Since a liquid crystal display device, a plasma display, or the like 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 exemplified as the speaker unit 5. The speaker unit 5 is attached to the rear housing 7 of the display unit 3 with a fastening member such as a screw through a sealing material 6.

  Note that fastening parts such as screws are not shown. Moreover, the sealing material 6 is formed of a sheet material having elasticity. This sealing material 6 prevents the sound emitted to the back side of the speaker unit 5 from flowing into the front side and causing interference with the sound emitted from the front side of the speaker unit 5. Furthermore, the sealing material 6 can completely prevent intrusion of rain, dust, and the like from the sound emitting hole 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 unit 1 so as to be openable and closable with respect to the main body unit 1. The rear housing 7 of the display unit 3 has an uneven back surface, and a plurality of first sound emitting holes 7b (hereinafter referred to as sound emitting holes 7b) are formed on the left and right rising surfaces 7a of the uneven shape. Is provided. The mesh-shaped waterproof sheet 8 is affixed so as to close the sound emitting 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 100-500 microns. The hole diameter of 100 to 500 microns is a diameter that can emit sound but cannot easily enter rain or dust. Preferably, about 70 holes with a hole diameter of about 300 microns are provided in 1 inch square.

  In this way, by providing the sound emitting hole 7b on the rising surface 7a of the rear housing 7, it does not impair the aesthetic appearance, and rain or dust can enter when the display portion of the notebook computer is closed when used outdoors. It becomes difficult.

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

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

  Further, as shown in FIG. 3, the sound emission gap 7 c exists 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 emitted efficiently from the sound emission gap 7c. The sound emitted from the left speaker unit 5 is mainly emitted from the left sound emission gap 7c, and the sound mainly produced from the right speaker unit 5 is emitted from the right sound emission gap 7c. .

  Next, a storage example of the speaker unit 5 will be further described with reference to FIG. In FIG. 4, the rear housing 7 is provided with a wall 7 e. 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 at the position of the open surface of the box. That is, the box formed by the wall 7e, the rising surface 7a, and the back housing 7 functions as a so-called speaker box. By providing the function of the speaker box in this way, it is possible to reproduce a higher quality sound. In addition, the shape and volume of the box formed by the wall 7e, the rising surface 7a, and the back housing 7 affect the 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. Further, when a plurality of speakers having different sound ranges are used, a convenient box for each sound range may be individually formed.

  The speaker unit 5 is attached to the rising surface 7a of the rear housing 7 by fastening parts such as screws. In FIG. 4, fastening parts such as screws are not shown. Moreover, in FIG. 4, the description of the sealing material 6 is omitted.

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

By the way, as can be seen from FIGS. 2 and 5, the left and right rising surfaces 7a are not parallel to each other but are inclined to each other. Assuming that the left and right rising surfaces 7a are parallel to each other, there is a problem of interference of sound emitted through the sound emitting holes 7b provided in the left and right rising surfaces 7a. That is, a fixed sound field directivity depending on the sound frequency is generated. However, in FIGS. 2 and 5, the speaker units 5 are arranged along the left and right rising surfaces 7a that are inclined with respect to each other, and the sound emitting holes 7b are respectively formed on the left and right rising surfaces 7a that are inclined with respect to each other. A plurality are formed. By doing so, the distance between the left and right sound emission holes 7b is not a constant value. Therefore, the fixed sound field directivity depending on the sound frequency can be suppressed. That is, the same effect as suppressing sound interference can be obtained. It is possible to suppress the interference of sound, Ru can reduce the amount of attenuation of the volume.

Next, the state of the inner surface of the back housing 7 will be described with reference to FIG. In FIG. 4, dimples 7 d are provided on the inner surface of the back housing 7. By providing the dimple 7d, the inner surface of the back casing 7 is not a smooth flat surface but has irregularities. The sound generated by the speaker unit 5 is reflected by the inner surface of the rear housing 7. Due to the presence of such irregularities, components that are out of phase with each other are generated in the sound reflected on the inner surface of the back casing 7. As a result, it is possible to further suppress interference of sound emitted through the sound emitting holes 7b provided in the left and right rising surfaces 7a. That is, it is possible to further suppress interference of the sound, Ru can further reduce the attenuation of sound.

  Further, as shown in FIGS. 1 and 3, a mesh-like 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 the sheet 9 is about 500 to 1000 microns, and is a diameter that can prevent entry of foreign matter.

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

By being configured in this manner, the portable information processing apparatus of the present invention can substantially save space and can protect the speaker by preventing entry of rain, dust, etc. when used outdoors.

In addition, the portable information processing device of the present invention has an excellent sound range and sound quality by suppressing the interference of sound by setting the rising surfaces to be inclined with respect to each other or by providing dimples on the surface of the rear housing. realizable. Furthermore, the portable information processing apparatus of the present invention forms a so-called speaker box with the rear casing, the rising surface, and the wall provided on the rear casing, and the speaker is installed in the speaker box, so that an excellent sound range is obtained. And sound quality.

Portable information processing apparatus of the present invention, aims to substantial space saving, can protect the speaker and not only states open the display unit, a high-quality stereo sound output even with closed display unit It is useful as a portable information processing apparatus having a built-in speaker unit.

1 is an external perspective view showing a state in which a display unit of a notebook computer that is a portable information processing apparatus according to an embodiment of the present invention is opened. 1 is an external perspective view showing a state in which a display unit of a notebook computer that is a portable information processing apparatus according to an embodiment of the present invention is closed. Sectional drawing of the speaker storage part of the notebook computer which is a portable information processing apparatus of one embodiment of this invention The disassembled perspective view which shows the speaker storage part of the notebook computer which is a portable information processing apparatus of one embodiment of this invention 1 is an external view showing a state in which a display unit of a notebook personal computer that is a portable information processing apparatus according to an embodiment of the present invention is closed. External perspective view showing a conventional notebook computer

Explanation of symbols

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 Back surface housing 7a Standing surface 7b First sound emission hole 7c Sound emission gap 7d Dimple 7e Wall 8 Tarpaulin 9 Mesh sheet

Claims (3)

A main body, a display unit attached to the main body so as to be openable and closable, a display panel built in the display unit, and a speaker unit housed between a rear housing of the display unit and the display panel; A rear surface portion of the rear housing is formed in a concavo-convex shape to form a non-parallel and bilaterally symmetric rising surface on the left and right sides of the rear housing, and the rising surface A plurality of sound emission holes for emitting sound of the speaker unit are formed respectively, and a speaker box is configured by the rear casing, the rising surface formed on the rear casing, and a wall formed on the rear casing. A portable information processing apparatus , wherein a speaker unit is mounted at a position of an open surface of the speaker box facing the display panel . The portable information processing apparatus according to claim 1, wherein each of the speaker units is attached to a rising surface of the rear housing by a fastening component . The portable information processing apparatus according to claim 1, wherein irregularities are formed by providing dimples on an inner surface of a rear casing constituting a part of the speaker box .

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