JP2013055702A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an output sound quality.SOLUTION: An electronic apparatus in an embodiment comprises: a housing having a pair of corner parts and an inner sealed space; a pair of loudspeaker boxes housed in the sealed space near each corner part; and a pair of loudspeakers housed in a pair of the loudspeaker boxes in a direction crossing with a thickness direction of the housing. The housing includes a pair of first openings provided near each loudspeaker box, and a second opening positioned between a pair of the first openings and continued to the sealed space. Each loudspeaker box comprises a first duct guiding sounds from a first face of each loudspeaker to each first opening, and a second duct guiding sounds from a second face of each loudspeaker toward the sealed space.

Description

  Embodiments described herein relate generally to a television and an electronic device having a speaker.

  For example, some electronic devices such as notebook portable computers have speaker units on the left and right.

JP 2004-357220 A

  In such an electronic device, since sound quality can be a factor that determines competitiveness in the market, there is always a need for improvement in sound quality, and improvement in output sound quality is required.

  An electronic apparatus according to an embodiment includes a housing having a pair of corners and an inner sealed space, a pair of speaker boxes housed in the sealed space near the corners, and the pair of speakers. A pair of speakers housed in a direction intersecting the thickness direction of the housing in the box, the housing comprising a pair of first openings provided in the vicinity of each speaker box, and the pair of speakers. A second opening that is located between the first openings and continuous with the sealed space, and each speaker box transmits sound from the first surface of each speaker. And a second duct for guiding sound from the second surface of each speaker toward the sealed space.

The front view which showed the television which is an example of the electronic device concerning 1st Embodiment. Sectional drawing along F2-F2 line | wire of the television shown in FIG. The perspective view which showed the portable computer which is an example of the electronic device concerning 2nd Embodiment. FIG. 4 is a perspective view showing the inside of the portable computer shown in FIG. 3 with a part of the display cabinet and the first case of the housing removed. FIG. 4 is a top view showing a main body of the portable computer shown in FIG. 3. The front view which showed the main-body part of the portable computer shown in FIG. FIG. 6 is a cross-sectional view of the portable computer shown in FIG. 5 taken along line F7-F7. FIG. 4 is a top view showing the inside of the main body of the portable computer shown in FIG. 3 through a first case of the housing. FIG. 9 is a cross-sectional view showing the main body shown in FIG. 8 cut in the horizontal direction at the height of the second duct of the speaker box. The perspective view which showed the 1st case and the speaker box in the state which removed the 2nd case of the housing | casing in the main-body part of the portable computer shown in FIG. The perspective view which showed the 1st case of the housing | casing from the inner side (back side) in the main-body part of the portable computer shown in FIG. Sectional drawing along the vertical direction of the main-body part of the portable computer shown in FIG. The perspective view which showed the 2nd case of the housing | casing from the inner side (back side) in the main-body part of the portable computer shown in FIG. The front view which showed the tablet type portable computer which is an example of the electronic device concerning 3rd Embodiment. The perspective view which showed the tablet type portable computer shown in FIG. 14 from the back.

  Hereinafter, with reference to FIGS. 1 and 2, an embodiment of a television as an example of an electronic apparatus will be described. Further, in the first embodiment, the front side (that is, the user side) is the front direction F, the back side as viewed from the user is the rear direction B, the left side when viewed from the user is the left direction L, and the right side when viewed from the user is the right direction. R, the upper direction as viewed from the user is defined as the upward direction U, and the lower direction as viewed from the user is defined as the downward direction D.

As shown in FIG. 1, the television 11 according to the present embodiment is a thin display device having a rectangular appearance. As shown in FIG. 1, the television 11 includes, for example, a main body portion 12 and a stand portion 13 (a support portion, a base, a support portion, and a leg portion) that supports the main body portion 12.

  The main body 12 has a housing 14 made of, for example, synthetic resin. The main body 12 includes a display panel 15 (display device, display module, display unit), a pair of speaker boxes (speaker unit, sound emitting unit, box, support unit, housing) 16, and one speaker box 16. A total of two speakers 17 (a pair of speakers) housed individually, a system board connected to the display panel 15 for overall control of the television, a tuner board, and a power circuit board are provided inside the housing 14. In preparation. The display panel 15 is composed of, for example, a rectangular plate-like liquid crystal panel, but may be composed of other types of display panels such as a plasma display panel and an organic EL panel.

  The casing 14 includes a plurality of corners (corners, corners, ends, edges, peripheral edges) 18 and a sealed space (closed) provided inside the casing 14 and sealed (substantially sealed). A space surrounded by regions / walls, a space kept low in air permeability, a region closed from the outside of the housing, and a region surrounded entirely by the housing inner wall and parts) 21. The pair of speaker boxes 16 are housed in a sealed space 21 of the housing 14. As shown in FIG. 2, each speaker 17 is housed in a direction intersecting the thickness direction T of the housing 14 in the speaker box 16. The plurality of corner portions 18 include a pair of corner portions 18A near the lower direction D where the pair of speaker boxes 16 are provided.

  The casing 14 includes a frame-shaped first case 22 (mask, first casing, first member) covering the front surface of the display panel 15 and a second case 23 (cover, first cover) covering the rear surface of the display panel 15. 2 housings, second member). The first case 22 is a portion that is mainly visible to the user, and the second case 23 is a portion that is located on the opposite side of the first case 22 and is difficult to see from the user. The housing 14 has a sealed space 21 at a position near the front direction F inside. The periphery of the sealed space 21 is, for example, a first case 22, a second case 23, and a protrusion protruding from the second case 23 (protrusion, peripheral part, peripheral wall, wall, side part, surface, Region) 24. The protruding portion 24 is an example of a member that defines the periphery of the sealed space 21, and is not limited to the one protruding from the second case 23, and may protrude from the first case 22, or may be detachable.

  As shown in FIGS. 1 and 2, the first case 22 includes a portion 55 (a portion facing the speaker box 16) facing the speaker box 16 and a plurality of minute through holes, for example, in one area. And a second opening (sound emission part, output part, sound emission area, output area) 25 formed by the provision. The second opening 25 is located between a pair of first openings 27 described later, and is continuous (communication) with (facing) the sealed space 21. On the inner surface of the first case 22, a plurality of reinforcing ribs (protrusions, reinforcing portions, lattice portions, support portions, supports) 26 for reinforcing the same are arranged in a honeycomb shape, a lattice shape, or the like. ing. Since the configuration of the plurality of ribs 26 is the same as that of the second embodiment, the detailed description will be given in the second embodiment.

  The second case 23 has a pair of first openings 27 provided in the vicinity of each speaker box 16 (that is, in the vicinity of each corner 18). The first opening 27 extends in a direction crossing the thickness direction T of the housing 14.

  Each speaker box 16 includes a support portion 30 that supports the speaker 17 and a first duct (guide portion, communication portion, one surface to a peripheral surface) that guides sound from the first surface 17A of the speaker 17 to the first opening portion 27. A second duct (a member extending toward the first opening 27) and a second duct (guide member) for guiding sound from the second surface 17B opposite to the first surface 17A of the speaker 17 toward the sealed space 21. A guide part, a communication part, a member surrounding one surface or a peripheral surface, and a member extending toward the sealed space 21). Since the configuration of each speaker 17, the configuration of each speaker box 16, and the structure around the speaker box 16 are the same as those in the second embodiment, the details thereof will be described in the second embodiment.

  Then, the effect | action of the speaker box 16 of this embodiment is demonstrated. In the present embodiment, sound emitted from the first surface 17 </ b> A of the speaker 17 is guided by the first duct 31 and transmitted from the first opening 27 to the outside of the housing 14. At that time, the sound mainly guided by the first duct 31 and emitted from the first opening 27 is a relatively directional high and middle range sound (for example, several hundred Hz or more). The sound emitted from the second surface 17 </ b> B of the speaker 17 is guided by the second duct 32 and emitted into the sealed space 21 of the housing 14 and resonates in the sealed space 21. And the sound emitted from the left and right speaker boxes 16 (second duct 32) is synthesized and enhanced in the sealed space 21. The sound guided to the sealed space 21 is mainly a low-frequency sound (for example, several hundred Hz or less). Most of the sound enhanced in the sealed space is transmitted to the outside of the casing 14 through the second opening 25 provided in the first case 22 (also from other through holes provided in the casing 14). Transmitted to the outside).

  In this embodiment, sound in the low frequency range is transmitted to the outside of the housing 14 through the second opening 25. However, the sealed space 21 is in a completely (substantially complete) sealed state, and the housing 14 Sound may be transmitted to the outside by vibrating itself.

  According to the first embodiment, the television 11 includes a housing 14 having a pair of corners 18 </ b> A and a sealed space 21, and a pair of speakers housed in the sealed space 21 near each corner 18. A box 16 and a pair of speakers 17 housed in a direction intersecting the thickness direction T of the housing 14 in the pair of speaker boxes 16, and the housing 14 is provided in the vicinity of each speaker box 16. Each speaker box 16 includes a first pair of first openings 27 and a second opening 25 located between the pair of first openings 27 and continuous with the sealed space 21. The first duct 31 that guides the sound from the first surface 17A to the first openings 27 and the sound from the second surface 17B opposite to the first surface 17A of each speaker 17 are guided toward the sealed space 21. A second duct 32

  According to this configuration, since the speaker 17 is provided in a direction intersecting with the thickness direction T of the housing 14, the speaker 17 having a large aperture can be installed in the housing 14. In order to produce a good sound, the speaker 17 having a circular shape and a moderate size is desirable. Therefore, according to the above configuration, high sound quality can be realized without increasing the thickness dimension of the housing 14.

  Further, according to the above configuration, the sound from the first surface 17 </ b> A of the speaker 17 can be directly emitted to the outside of the housing 14 via the first duct 31. Further, the sound from the second surface 17B of the speaker 17 can be guided into the sealed space 21 via the second duct 32, so that mainly low-frequency sounds can be resonated in the sealed space 21. The low frequency sound emitted from the second duct 32 of each speaker box 16 is synthesized and enhanced in the sealed space 21, and is transmitted to the outside of the housing 14 through the second opening 25. As described above, in this embodiment, sound is emitted through two different paths, so that a heavy sound can be generated and high sound quality can be realized.

  In addition, since the details of each part are the same as those in the second embodiment, they will be described in the next second embodiment.

  Next, a second embodiment of the electronic device will be described with reference to FIGS. The portable computer 41, which is an example of the electronic device of the second embodiment, is different in appearance from the television 11 of the first embodiment, but the structure around the main body 12 is generally the same as that of the first embodiment. ing. In the following embodiments, the front side (that is, the user side) is the front direction F, the rear side is the rear direction B when viewed from the user, the left side is the left direction L when viewed from the user, and the right side is the right direction R when viewed from the user. The upper direction as viewed from the user is defined as the upward direction U, and the downward direction as viewed from the user is defined as the downward direction D.

  As shown in FIG. 3, the portable computer 41 is a so-called notebook personal computer. The portable computer 41 covers the main body part (first part, a support part that supports the display part) 12 and the main body part 12 (the display is closed or covered), A display unit (display unit, second portion) 42 that can stand up (in a state where the display crosses the main body unit 12 or is exposed), and between the main unit 12 and the display unit 42. And a provided hinge portion (connecting portion, connecting portion, rotating portion) 43. The display unit 42 includes a display panel 15 (display device, display module, display unit, component) and a display cabinet 44 (housing, cover, wall, surface) that covers the periphery of the display panel 15. .

  In this embodiment, the display panel 15 is composed of, for example, a rectangular plate (substantially square, rectangular) liquid crystal panel, but is composed of other types of display panels such as a plasma display panel and an organic EL panel. It may be.

  The main body 12 includes a housing (a housing constituent member, an assembly part, a surrounding portion) 14 formed of a metal, for example, a magnesium alloy, and a keyboard (an input portion, an input receiving portion, a receiving portion) attached to the housing 14. Operation unit, operation region, interface unit, input module, unit, component) 45 and touch pad (input unit, input reception unit, receiving unit, operation unit, operation region, interface unit, input module, unit, component, surface, touch Sensor area 46 and touch pad buttons 47 (input unit, input receiving unit, receiving unit, operation unit, operation region, interface unit, input module, unit) provided on the housing 14 in the vicinity of the touch pad 46 , Parts, buttons). As shown in FIG. 4, the main body 12 includes a printed circuit board (board, electronic component, component, module) 51, a battery unit (battery, power supply unit, unit, charging unit, component, module) 52, A fan unit (cooling device, fan, heat radiating part) 53 for cooling components on the circuit board 51, a pair of speaker boxes (box, support part, housing) 16 and one speaker box 16 are housed. A total of two speakers 17 (a pair of speakers and an output device) are provided inside the housing 14. The printed circuit board 51 controls the entire portable computer 41 in an integrated manner. The battery unit 52 is located in the housing 14 at a position in the front direction F (touch pad / touch pad button / position near the palm rest, position near the display / hinge, away from the fan unit). At a position away from the vent / connector opening of the housing). The fan unit 53 is located in the rear direction B in the casing 14 (touch pad / touch pad button / position opposite to the palm rest side, position near the display / hinge, away from the battery unit). And in a space where the vents and connector openings of the housing communicate with each other.

  As shown in FIG. 7, the housing 14 includes a plurality of corner portions (corner portions, corner portions, end portions, edge portions, peripheral edge portions) 18 and a first case provided at a position (upper side) viewed by the user. (Mask, first housing, first member) 22 and second case (cover, second member) provided on the opposite side (lower side) of first case 22 and abutted (combined) with first case 22 2 housings, second member, bottom) 23. The plurality of corner portions 18 include a pair of corner portions 18A near the front direction F where the pair of speaker boxes 16 are provided.

  The housing 14 has a sealed space 21 at a position near the front direction F inside. The sealed space 21 is positioned on the inner side of the palm rest part (wall / surface / region opposite to the hinge / display with respect to the keyboard) 54 (on the opposite side to the front end of the housing 14 and the end provided with the hinge). End, edge). The periphery of the sealed space 21 is defined (enclosed) by, for example, the first case 22, the second case 23, and the battery unit 52 of the housing 14. The battery unit 52 is an example of a member that defines the periphery of the sealed space 21. However, the battery unit 52 includes a part, a wall, a surface, and a region having a shape extending between the first case 22 and the second case 23 in the housing 14. For example, a standing wall protruding from the inside of the housing 14 or a wall formed by arranging a plurality of parts closely may be used. The pair of speaker boxes 16 are housed in the sealed space 21.

  Each speaker 17 is housed in a direction intersecting the thickness direction T of the housing 14 in the speaker box 16. The speaker 17 has a diameter of about 16 mm to 20 mm, for example, and has a circular shape.

  A keyboard 45 is attached to the first case 22 at a substantially central portion (a position surrounded by a peripheral portion), and the palm rest portion 54, the touch pad 46, and the touch pad are located at a position closer to the front direction F than the keyboard 45. A button 47 is provided. The first case 22 has a second opening 25 that is continuous with the sealed space 21, and a touch pad button 47 is disposed inside the second opening 25. As shown in FIG. 8, the second opening 25 is located between a pair of first openings 27 described later.

  The first case 22 includes a portion (surface, inner surface, wall, region) 55 (portion facing the speaker box 16) facing the speaker box 16 and a plurality of reinforcing members protruding toward the inner side (sealed space 21). Ribs (protruding portions, reinforcing portions, lattice portions, supporting portions, supports) 26. The plurality of ribs 26 have a honeycomb shape (hexagonal shape) and are mainly provided at positions corresponding to the palm rest portion 54. In this example, the ribs 26 are designed in a honeycomb shape, but the ribs may be arranged in, for example, a lattice shape or other shapes as long as a certain degree of rigidity, bending rigidity, and deformation suppressing function of the casing 14 can be secured. May be provided.

  As shown in FIG. 11, the plurality of ribs 26 are provided at positions away from the portion 55, and are not provided at the portion 55 facing the speaker box 16. That is, the rib 26 protrudes away from the portion 55. Further, the first case 22 is provided with a pair of positioning pins (protrusions, positioning portions, stoppers, support portions) 56 for positioning the speaker box 16.

  The second case 23 has a pair of first openings 27 in the vicinity of the pair of corners 18 </ b> A and in the vicinity of the pair of speaker boxes 16. Although the 1st opening part 27 is provided in the 2nd case 23 which is hard to see from a user, it is provided in the front direction F which is what is called a user side. The 1st opening part 27 is provided in the curved part (curved and the design curve was provided) near the front direction F of the 2nd case 23 (refer FIG. 7). The first opening 27 extends in a direction crossing the thickness direction T of the housing 14. Further, the second case 23 has a fan unit intake port 57 and an exhaust port 58 at positions near the rear direction B of the housing 14 (see FIG. 5).

  As shown in FIG. 12, the battery unit 52 has a longitudinal direction along the longitudinal direction of the casing (along the direction in which the pair of speakers are arranged). Further, the battery unit 52 has a height sufficient to seal the sealed space 21 (height over the inner surface facing in the thickness direction of the casing 14, the same thickness as the inner thickness of the casing 14, approximately the same thickness, The first area 59 (speaker area, space for sound reverberation, the front part of the casing, the casing) has a speaker box 16 provided with a height that can block or substantially block the air permeability in the casing. A space in which the air permeability to the outside is kept low), the printed circuit board 51 and components (electronic components, heating elements) mounted thereon, a fan unit (fan, fan case, motor, fan blade) 53, and fan unit 53 2nd area | region 60 (the cooling area | region, the space which collected the electronic components, the space which can improve the air permeability from the exterior of a housing | casing) where the fin for cooling (heat radiation part, heat radiating member) 66 to which the wind from is applied is arrange | positioned When And partitions a. As a result, the battery unit 52 exhibits a sound insulation effect, and the noise from the fan unit 53 and the like (the sound of wind flowing through the housing, Wind noise, motor vibration / operation noise, and electronic component operation noise).

  As shown in FIGS. 4 and 13, the intake port 57, the exhaust port 58, and the connector opening 65 are concentrated in the second region 60 near the rear B of the housing 14 (they are positioned close to each other). ). Since the first region 59 and the second region 60 are partitioned by the battery unit 52, the air in the second region 60 flows into the first region 59 even if a vent hole is provided in the first region 59. There is nothing (can be suppressed).

  As shown in FIGS. 11 and 12, the first case 22 has a keyboard support (support portion, support portion, plate portion, support surface, wall) 64 that supports the keyboard 45. The keyboard support 64 has a plurality of hexagonal (honeycomb) holes 64A. As shown in FIG. 12, since one surface of the printed circuit board 51 is in close contact (substantially in close contact) with the keyboard support 64 (with an insulator (not shown) in between), the sound from the fan unit 53 or the like is Leakage from 64A to the outside of the housing 14 is prevented.

  In order to realize such a configuration, in the present embodiment, a component (a component protruding from the surface such as a surface mounting side component) arranged on one surface of the printed circuit board 51 is surrounded by a hole 64A. The surface which opposes the part which became is avoided, and it arrange | positions according to the inner edge shape of the hole 64A.

  As shown in FIG. 12, a plurality of parts 67 having a large height are concentrated on the other surface of the printed circuit board 51 opposite to the one surface. For this reason, in this embodiment, it can arrange | position so that one surface of the printed circuit board 51 may closely_contact | adhere to the keyboard support 64, and the use efficiency of the space in the housing | casing 14 can be improved significantly.

  As shown in FIG. 4 and the like, the longitudinal direction of the printed circuit board (substrate) 51 is along the longitudinal direction (left-right direction) of the housing 14. For this reason, wind flows along the longitudinal direction of the housing 14 in the second region 60 partitioned by the battery unit 52. For this reason, it can be said that the shape of the printed circuit board (board | substrate) 51 is along the flow direction of a wind. In particular, large components (components with high mounting height) that generate a large amount of heat are concentrated on the other surface where the wind flows along the surface, so that these components can be radiated collectively.

  As shown in FIGS. 6, 13, etc., a part (motor) of the fan unit 53 and the bottom wall of the casing 14 (second case 23) corresponding thereto protrude below the bottom wall of the other part. ing. In addition, a plurality of vent holes (openings) are provided in a portion protruding downward from the bottom wall. For this reason, it is difficult for noise and vibration from the fan unit 53 to be transmitted to the inside of the housing 14.

  The rubber legs that support the housing 14 are located directly below the tall connectors (RGB connector and LAN connector). With this configuration, the housing 14 can be tilted forward. If the housing 14 is tilted forward, it is difficult for the user to propagate the sound in the second region 60 (a keyboard or a printed circuit board, which is a sound insulator located between the second region 60 and the user). Can be directed against).

  As shown in FIG. 13, the exhaust port 58 is provided on the rear B side wall of the housing 14, and discharges the wind from the fan unit 53 toward the rear B to the outside of the housing 14. For this reason, it can be said that the position of the exhaust port 58 is provided in the direction opposite to the first opening 27 and the second opening 25 shown in FIGS. 3 and 5. Therefore, the exhaust sound coming out from the exhaust port 58 comes out in the opposite direction to the sound from the speaker 17, and this does not adversely affect the acoustic effect exhibited by the speaker box 16.

  Each speaker box 16 is provided in front F of the housing 14. Each speaker box 16 is formed so as to accommodate one speaker 17 therein, for example, by synthetic resin. Each speaker box 16 is aligned with the first case 22 of the housing 14 via a positioning pin 56 and is fixed by, for example, a screw (fixing tool, fastening part, stopper member, fixing part) or the like. As shown in FIG. 7, the speaker box 16 includes a support 30 that supports the speaker 17, and a first duct that guides sound from the first surface 17 </ b> A (front surface) of the speaker 17 toward the first opening 27. Sound from the guide portion, the communication portion, the member surrounding one surface or the peripheral surface, the member extending toward the first opening 27, the member, the wall, the surrounding portion) 31 and the second surface 17B (rear surface) of the speaker 17 Second duct (guide portion, communication portion, member surrounding one surface or circumferential surface, member extending toward second opening portion 25, member, guiding toward sealed space 21 and second opening portion 25 continuous therewith, Wall, enclosure part) 32.

  One wall (a part) of the first duct 31 includes a portion 55 of the first case 22 of the housing 14 facing the speaker box 16. Therefore, more precisely, the speaker box 16 has a groove (opening, recess, protrusion, standing wall, wall) 61 that constitutes the other wall (other part) of the first duct 31. Yes. The groove portion 61 is an elastic member (low rigidity member, flexible member, deformable / displaceable member) 62 that defines the periphery of the groove portion 61, and a wall portion (surface portion) that constitutes (also serves as) a part of the second duct 32. 63. The elastic member 62 is bonded to the wall portion 63. The elastic member 62 is made of, for example, a sponge, but may be another type of elastic body such as rubber. The speaker box 16 is abutted against the portion 55 of the first case 22 via the elastic member 62. The second duct 32 is formed in a tubular shape.

  Subsequently, the operation of the speaker box 16 of the present embodiment will be described with reference to FIGS. In the present embodiment, the speaker 17 emits sound toward the inner surface of the housing 14 (region surrounded by the ribs 26). That is, the sound emitting surface faces the inner surface of the first case 22. Sound emitted from the first surface 17 </ b> A of the speaker 17 is guided by the first duct 31 and released from the first opening 27 to the outside of the housing 14. At this time, the sound mainly guided by the first duct 31 and emitted from the first opening 27 is a relatively directional high and middle range sound (for example, several hundred Hz or more). The sound emitted from the second surface 17 </ b> B of the speaker 17 is guided by the second duct 32 and emitted into the sealed space 21 of the housing 14 and resonates in the sealed space 21. And the sound emitted from the left and right speaker boxes 16 (second duct 32) is synthesized and enhanced in the sealed space 21. The sound guided to the sealed space 21 is mainly a low-frequency sound (for example, several hundred Hz or less) with little directivity. Most of the sound enhanced in the sealed space 21 is transmitted to the outside of the housing 14 through the second opening 25 provided in the first case 22 (from other through holes provided in the housing 14). Is also transmitted to the outside).

  In this embodiment, sound in the low frequency range is transmitted to the outside of the housing 14 through the second opening 25. However, the sealed space 21 is completely sealed, and the housing 14 itself is vibrated. In this way, the sound may be transmitted to the outside.

  According to the second embodiment, the portable computer 41 includes a housing 14 having a pair of corner portions 18A, a pair of speaker boxes 16 housed in the housing 14 in the vicinity of each corner portion 18, and a pair. A pair of speakers 17 housed in a direction intersecting the thickness direction T of the housing 14 in the speaker box 16, and the housing 14 is a pair of first openings provided in the vicinity of each speaker box 16. Part 27 and a second opening 25 located between the pair of first openings 27, and each speaker box 16 is configured to guide the sound from each speaker 17 to each first opening 27. 1 duct 31 and a second duct 32 that guides the sound from each speaker 17 toward the second opening 25.

  According to this configuration, since the speaker 17 is provided in a direction intersecting with the thickness direction T of the housing 14, the speaker 17 having a large aperture can be installed in the housing 14. In order to produce a good sound, a circular speaker with a moderate size is necessary. Therefore, according to the above configuration, high sound quality can be realized without increasing the thickness dimension of the housing 14.

  Further, according to the above configuration, the sound from the speaker 17 can be transmitted as it is to the outside of the housing 14 via the first duct 31. Further, it is possible to guide the sound from the speaker 17 into the sealed space 21 via the second duct 32 and resonate mainly low-frequency sound in the sealed space 21. The low frequency sound emitted from the second duct 32 of each speaker box 16 is synthesized and enhanced in the sealed space 21, and is transmitted to the outside of the housing 14 through the second opening 25. As described above, in this embodiment, sound is transmitted to the outside of the housing 14 through two different paths, so that a heavy sound can be generated and high sound quality can be realized.

  The housing 14 has a portion 55 facing the speaker box 16, and the portion 55 forms one wall of the first duct 31. The speaker box 16 covers the other wall of the first duct 31. A groove 61 is formed. According to this configuration, since the housing 14 can also serve as one of the wall portions of the first duct 31, compared with the case where both the first duct 31 and the second duct 32 are provided in the speaker box 16. Thus, the thickness dimension of the speaker box 16 can be reduced. Thereby, the housing 14 can be further reduced in thickness.

  Further, the groove portion 61 has an elastic member 62 that defines the periphery thereof and abuts against the portion 55. According to this configuration, vibration of the speaker box 16 that occurs when sound is generated can be absorbed by the elastic member 62. As a result, vibration generated in the speaker box 16 is not transmitted to the housing 14 as it is, and chattering in the housing 14 can be prevented and deterioration in the texture of the portable computer 41 can be prevented (that is, The portable computer 41 can have a high-class feeling.)

  The portable computer 41 has a member that is provided in the housing 14 and that defines the periphery of the sealed space 21. According to this configuration, it is possible to prevent sound from leaking from the sealed space 21 and enhance (resonate) the low-frequency sound in the sealed space 21 to achieve high sound quality.

  The housing 14 includes a first case 22 that is visually recognized by the user and a second case 23 that is on the opposite side of the first case 22, and the first opening 27 is provided in the second case 23. It is done. According to this configuration, the first opening 27 can be made difficult to see from the user, and the texture of the portable computer 41 can be improved.

  The first opening 27 extends in a direction that intersects the thickness direction of the housing 14. In recent years, since the casing 14 of the portable computer 41 has been significantly reduced in thickness, the first opening 27 can be made difficult to be seen from the user by this configuration as well. Thereby, the texture of the portable computer 41 can be improved.

  Further, the housing 14 has a rib 26 protruding toward the sealed space 21 at a position away from the portion. According to this configuration, it is possible to prevent the rib 26 from interfering with the transmission of sound in the first duct 31 and to achieve the expected acoustic effect. Further, it is possible to prevent the rib 26 and the speaker box 16 from interfering with each other and contribute to the thinning of the housing 14.

  The sealed space 21 is provided inside the palm rest portion 54 provided in the housing 14. According to this configuration, the sealed space inside the palm rest portion 54 can be effectively used as a location where sound is resonated. As a result, high sound quality can be realized without any particular increase in space. Furthermore, since the first opening portion 27 is provided on the user side of the second case 23, the sound transmitted from the first opening portion 27 is efficiently transmitted to the user, thereby also realizing high sound quality. it can. Further, the first opening 27 is not blocked by the user's hand.

  Next, a third embodiment of the electronic device will be described with reference to FIGS. A tablet-type portable computer 71, which is an example of the electronic device of the third embodiment, has an external structure different from that of the second embodiment, but the other parts are the same as those of the second embodiment. For this reason, mainly different parts will be described, and common parts will be denoted by common reference numerals and description thereof will be omitted. In the following embodiments, the front side (that is, the user side) is the front direction F, the rear side is the rear direction B when viewed from the user, the left side is the left direction when viewed from the user, the right side is the right direction when viewed from the user, The upper direction when viewed from the top is defined as the upward direction, and the lower direction when viewed from the user is defined as the downward direction.

  The tablet-type portable computer 71 includes a housing 14 made of metal, for example, a magnesium alloy, and a touch panel display panel 15 provided inside the housing 14 so that a part thereof is exposed to the outside. ing. As shown in FIG. 14, the tablet portable computer 71 includes a printed circuit board 51, a battery unit 52, a fan unit 53, a pair of speaker boxes 16, and a pair of speakers 17 in the housing 14. I have. The printed circuit board 51 controls the entire portable computer 41 in an integrated manner. The user can perform a desired operation on the tablet portable computer 71 by bringing a finger or the like into contact with the touch panel display panel 15.

  As shown in FIG. 15, the housing 14 includes a plurality of corners 18, a first case 22 provided at a position (upper side) viewed by a user, and a side (lower side) opposite to the first case 22. A second case 23 provided and abutted against the first case 22. The plurality of corner portions 18 include a pair of corner portions 18A near the lower direction D where the pair of speaker boxes 16 are provided. The housing 14 has a sealed space 21 at a position close to the downward direction D inside. The periphery of the sealed space 21 is defined by, for example, the first case 22, the second case 23, and the battery unit 52 of the housing 14. The battery unit 52 is an example of a member that defines the periphery of the sealed space 21. The pair of speaker boxes 16 are housed in the sealed space 21.

  The first case 22 has a portion 55 facing the speaker box 16, a second opening 25 formed by, for example, collectively providing a plurality of minute through holes in one region, and an inner side (sealed space 21). And a plurality of reinforcing ribs 26 protruding toward the surface. The second opening 25 is located between a pair of first openings 27 described later, and is continuous with the sealed space 21. The plurality of ribs 26 are provided on the inner surface of the first case 22 and have a honeycomb shape (hexagonal shape). Further, the plurality of ribs 26 are provided at positions deviated from the portion 55 and are not provided at the portion 55 facing the speaker box 16 as in the second embodiment.

  The second case 23 has a pair of first openings 27 in the vicinity of the pair of corners 18 </ b> A and in the vicinity of the pair of speaker boxes 16. The first opening 27 is provided in the second case 23 that is difficult to be seen by the user, but is provided in the downward direction D on the user side when used by being held by hand. The first opening 27 extends in a direction crossing the thickness direction T of the housing 14. Further, the second case 23 has an intake / exhaust port 72 for the fan unit 53 at a position near the upper direction U of the housing 14 (see FIG. 15).

  Each speaker box 16 is formed so as to accommodate one speaker 17 therein, for example, by synthetic resin. The speaker box 16 includes a support 30 that supports the speaker 17, a first duct 31 that guides sound from the first surface 17 </ b> A (front surface) of the speaker 17 toward the first opening 27, and a second of the speaker 17. It has the 2nd duct 32 which guides the sound from the surface 17B (rear surface) toward the sealed space 21 and the 2nd opening part 25 following this.

  A part of the first duct 31 includes a portion 55 facing the speaker box 16 of the first case 22 of the housing 14. For this reason, more precisely, the speaker box 16 has a groove portion 61 that constitutes another portion of the first duct 31. The groove portion 61 has an elastic member 62 that defines the peripheral edge thereof, and a wall portion 63 that constitutes (also serves as) a part of the second duct 32. The elastic member 62 is bonded to the wall portion 63. The elastic member 62 is made of, for example, a sponge, but may be another elastic body such as rubber. The second duct 32 is formed in a tubular shape.

  The operation of the speaker box 16 of this embodiment is the same as that of the second embodiment. In this embodiment, sound in the low frequency range is transmitted to the outside of the housing 14 through the second opening 25. However, the sealed space 21 is completely sealed, and the housing 14 itself is vibrated. In this way, the sound may be transmitted to the outside.

  According to the third embodiment, the portable computer 41 includes a housing 14 having a pair of corner portions 18A, a pair of speaker boxes 16 housed in the housing 14 near each corner portion 18, and a pair of speakers. A pair of speakers 17 housed in a direction intersecting the thickness direction T of the housing 14 in the speaker box 16, and the housing 14 is a pair of first openings provided in the vicinity of each speaker box 16. Part 27 and a second opening 25 located between the pair of first openings 27, and each speaker box 16 is configured to guide the sound from each speaker 17 to each first opening 27. 1 duct 31 and a second duct 32 that guides the sound from each speaker 17 toward the second opening 25.

  According to this configuration, since the speaker 17 is provided in a direction intersecting with the thickness direction T of the housing 14, the speaker 17 having a large aperture can be installed in the housing 14. In addition, the sound from the speaker 17 can be transmitted as it is to the outside of the housing 14 via the first duct 31, and the sound from the speaker 17 is guided into the sealed space 21 via the second duct 32. Thus, it is possible to resonate mainly low-frequency sounds in the sealed space 21. As described above, since the sound is transmitted to the outside of the housing 14 through two different paths, a heavy sound can be generated and high sound quality can be realized.

  The electronic device is not limited to the television 11 and the portable computers 41 and 71 shown in the above embodiment, but may be other electronic devices such as a mobile phone, an electronic book reader that electronically displays books, images, and the like. Of course, it can be implemented.

  Further, the electronic device is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine the component covering different embodiment suitably.

  The invention described in the claims at the beginning of application of Japanese Patent Application No. 2011-190568, which is the original application of the present application, will be added below.

[11]
A housing provided with a first opening and a second opening;
A speaker emitting sound toward the inner surface of the housing;
A first member for passing sound from the speaker through the first opening;
A second member that passes the sound from the speaker toward the second opening;
Electronic equipment having

DESCRIPTION OF SYMBOLS 11 ... Television, 14 ... Housing | casing, 16 ... Speaker box, 17 ... Speaker, 17A ... 1st surface, 17B ... 2nd surface, 18A ... A pair of corner | angular part, 21 ... Sealed space, 22 ... 1st case, 23 ... 2nd case, 25 ... 2nd opening part, 26 ... Rib, 27 ... 1st opening part, 31 ... 1st duct, 32 ... 2nd duct, 41 ... Portable computer, 42 ... Display part, 43 ... Hinge part, 52 ... Battery unit, 55 ... part, 61 ... groove, 62 ... elastic member, 71 ... tablet-type portable computer

Claims (11)

A housing having a corner and a space inside,
A speaker box housed in the space near the corner;
A speaker housed in a direction intersecting the thickness direction of the housing in the speaker box;
With
The housing is
A first opening provided in the vicinity of the speaker box;
A second opening continuous with the space;
Including
The speaker box is
A first duct for guiding sound from the first surface of the speaker to the first opening;
A second duct for guiding the sound from the second surface of the speaker toward the space;
With electronic equipment. The housing has a portion facing the speaker box, and the portion forms one wall of the first duct;
The electronic device according to claim 1, wherein the speaker box has a groove portion that forms another wall of the first duct.   The electronic device according to claim 2, wherein the groove includes an elastic member that defines a peripheral edge of the groove and is in contact with the portion.   The electronic device according to claim 3, further comprising a member that is provided in the housing and defines a periphery of the space. The housing includes a first case visually recognized by a user, and a second case on a side opposite to the first case,
The electronic device according to claim 4, wherein the first opening is provided in the second case.   The electronic device according to claim 5, wherein the first opening extends in a direction intersecting the thickness direction of the housing.   The electronic device according to claim 6, wherein the casing has a rib protruding toward the space at a position away from the portion. A housing with corners;
A speaker box housed in the housing near the corner;
A speaker housed in a direction intersecting the thickness direction of the housing in the speaker box;
With
The housing is
A first opening provided in the vicinity of the speaker box;
A second opening located between the first openings;
A portion facing the speaker box;
Including
The speaker box is
A first duct for guiding sound from the speaker to the first opening;
A second duct for guiding the sound from the speaker toward the second opening;
Have
The part is an electronic device that forms one wall of the first duct. A space is formed inside the housing,
The electronic device according to claim 8, wherein the space is provided inside a palm rest portion provided in the housing. The housing includes a first case visually recognized by a user, and a second case on a side opposite to the first case,
The electronic device according to claim 8, wherein the first opening is provided on a user side of the second case. A housing with corners;
A speaker box housed in the housing near the corner;
A speaker housed in a direction intersecting the thickness direction of the housing in the speaker box;
With
The housing is
A first opening provided in the vicinity of the speaker box;
A second opening located between the first openings;
A portion facing the speaker box;
Including
The speaker box is
A first duct for guiding sound from the speaker to the first opening;
A second duct for guiding the sound from the speaker toward the second opening;
An elastic member that abuts on the part and forms part of the wall of the first duct;
Electronic equipment having

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