WO2023238256A1 - Display device - Google Patents

Display device Download PDF

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Publication number
WO2023238256A1
WO2023238256A1 PCT/JP2022/023017 JP2022023017W WO2023238256A1 WO 2023238256 A1 WO2023238256 A1 WO 2023238256A1 JP 2022023017 W JP2022023017 W JP 2022023017W WO 2023238256 A1 WO2023238256 A1 WO 2023238256A1
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WO
WIPO (PCT)
Prior art keywords
sound
sound wave
speaker
display
hole
Prior art date
Application number
PCT/JP2022/023017
Other languages
French (fr)
Japanese (ja)
Inventor
浦純也
毛利重実
Original Assignee
バルミューダ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by バルミューダ株式会社 filed Critical バルミューダ株式会社
Priority to PCT/JP2022/023017 priority Critical patent/WO2023238256A1/en
Publication of WO2023238256A1 publication Critical patent/WO2023238256A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
    • H04N5/655—Construction or mounting of chassis, e.g. for varying the elevation of the tube
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

Definitions

  • the present invention relates to a display device.
  • the display device includes a display section (display) and a speaker.
  • the display section displays images and videos.
  • the display unit is, for example, an organic EL (Electro Luminescence) display or a liquid crystal display.
  • the speaker converts an electrical signal corresponding to an image or video into a sound wave (sound) and outputs it.
  • the plurality of speakers include speakers with different output bands, such as a speaker that outputs sound waves in the mid-high range and a speaker that outputs sound waves in the low range.
  • the sound waves output from each of the plurality of speakers are emitted to the outside of the display device.
  • An object of the present invention is to provide a display device equipped with a plurality of speakers that achieves excellent acoustic effects with a novel configuration.
  • a display device includes a display including a display surface on which an image is displayed, and a rear speaker unit disposed behind the display surface and outputting rear sound waves, the rear speaker unit comprising: A sound guide comprising: a sound wave reflecting member that reflects rear sound waves; and at least one sound guiding portion that guides the rear sound waves reflected by the sound wave reflecting member in a direction different from the direction in which the rear sound waves are incident on the sound wave reflecting member. It is characterized by having a rear sound wave output hole that emits rear sound waves guided to the rear sound wave to the outside.
  • the present invention can achieve excellent acoustic effects with a novel configuration in a display device equipped with a plurality of speakers.
  • FIG. 1 is a block diagram showing an embodiment of a display device according to the present invention.
  • 2 is a front perspective view of the display device of FIG. 1.
  • FIG. 3 is a rear perspective view of the display device of FIG. 2.
  • FIG. 3 is a front view of the display device of FIG. 2.
  • FIG. 3 is a rear view showing a part of the internal structure of the display device of FIG. 2.
  • FIG. 4 is a cross-sectional view taken along line AA of the display device in FIG. 3.
  • FIG. 3 is a front perspective view showing a part of the internal structure of the display device of FIG. 2.
  • FIG. 3 is a schematic diagram showing the traveling direction of sound waves output from a front speaker unit included in the display device of FIG. 2.
  • FIG. 3 is a schematic diagram showing the traveling direction of sound waves output from a front speaker unit included in the display device of FIG. 2.
  • FIG. 3 is a plan view showing a schematic configuration of a rear speaker box included in the display device of FIG. 2.
  • FIG. 10 is an exploded perspective view of the rear speaker box of FIG. 9.
  • FIG. 10 is a perspective view showing a schematic configuration of a holding member included in the rear speaker box of FIG. 9.
  • FIG. 10 is a sectional view taken along the line BB of the rear speaker box in FIG. 9.
  • FIG. 10 is a sectional view taken along the line CC of the rear speaker box in FIG. 9.
  • FIG. 10 is a schematic cross-sectional view taken along line EE of the display device in FIG. 9.
  • FIG. 10 is a view taken along arrow F of the rear speaker box in FIG. 9.
  • FIG. 10 is a view of the rear speaker box shown in FIG. 9 in the direction of arrow G.
  • FIG. 10 is an exploded perspective view of the rear speaker box of FIG. 9.
  • FIG. 10 is a perspective view showing a schematic configuration of a holding member included in the rear speaker box of
  • this device is a general term for a television device (hereinafter referred to as “television”), a PC (Personal Computer), and the like. The following description will be made using a case where the present device is a television as an example.
  • the "X-axis direction” means the direction along the X-axis when the three mutually orthogonal axes shown in each figure are the X-axis, Y-axis, and Z-axis, respectively.
  • the left-right direction in the present apparatus for example, the left-right direction in the paper plane in FIG. 4
  • the "Y-axis direction” is a direction along the Y-axis, and in this embodiment, is the vertical direction in the present apparatus (for example, the vertical direction in the paper plane in FIG. 4).
  • the "Z-axis direction” is a direction along the Z-axis, and in this embodiment, it is the front-rear direction (front-back direction, for example, the front-rear direction of the paper in FIG. 4) of the present apparatus.
  • the "+X-axis direction” is the positive direction of the X-axis direction, and in this embodiment is the right direction.
  • the "-X-axis direction” is the negative direction of the X-axis direction, and in this embodiment is the left direction.
  • the "+Y-axis direction” is the positive direction of the Y-axis direction, and in this embodiment is upward.
  • the "-Y-axis direction” is the negative direction of the Y-axis direction, and in this embodiment is downward.
  • the "+Z-axis direction” is the positive direction of the Z-axis direction, and in this embodiment, is the front (front direction).
  • the "-Z-axis direction” is the negative direction of the Z-axis direction, and in this embodiment, is the rear direction (back direction).
  • FIG. 1 is a block diagram showing an embodiment of this device.
  • FIG. 2 is a front perspective view of the device.
  • FIG. 3 is a rear perspective view of the device.
  • This device 1 receives television broadcasting, displays images and videos, and outputs sound waves (sounds) corresponding to the images and videos.
  • This device 1 includes a display section D, a reception section RE, a signal processing section P, a front speaker unit 10, a rear speaker unit 20, a subwoofer unit 30, a display case 40 (see FIG. 5), and an angle It includes an adjustment mechanism 50 (see FIG. 5), a housing 60, a stand 70, and a hinge portion 80 (see FIG. 7).
  • the display section D displays images and videos based on video data to be described later.
  • the display section D includes a display surface S on which images and videos are displayed.
  • the display section D is, for example, an organic EL (Electro Luminescence) display.
  • the display portion D is a rectangle configured with long sides extending in the left-right direction and short sides extending in the up-down direction.
  • the left-right direction is an example of the "lateral direction" in the present invention.
  • the size of the display section D is, for example, 65 inches.
  • the display section D is arranged so that the display surface S faces forward when the device 1 is arranged in a normally used state.
  • Display section D is an example of a "display" in the present invention.
  • the display section may be a liquid crystal display or other thin display.
  • the size of the display section is not limited to 65 inches. That is, for example, the size of the display section may be 55 inches.
  • the receiving unit RE receives television broadcasting from the outside via an antenna (not shown), and outputs a broadcast signal based on the received television broadcasting.
  • the receiving unit RE includes a receiving circuit (not shown).
  • the receiving section RE includes a circuit board on which a receiving circuit is mounted.
  • the signal processing unit P generates video data and audio data by performing predetermined signal processing on the broadcast signal received by the receiving unit RE.
  • the signal processing section P includes a signal processing circuit (not shown).
  • the signal processing section P includes a circuit board on which a signal processing circuit is mounted.
  • FIG. 4 is a front view of this device.
  • the front speaker unit 10 converts an audio signal based on audio data into a sound wave and outputs it.
  • the sound waves output from the front speaker unit 10 (hereinafter referred to as "front sound waves") are, for example, sound waves in the frequency range of medium to treble ranges.
  • the front speaker unit 10 is arranged on the sides (right side, left side) of the display surface S (display section D).
  • the front speaker unit 10 is housed in a housing 60.
  • the front speaker unit 10 includes a pair of upper speakers 11 and a pair of lower speakers 12. The specific configuration of the front speaker unit 10 will be described later.
  • FIG. 5 is a rear view showing a part of the internal structure of the device 1. As shown in FIG. In the figure, for convenience of explanation, illustration of a part of the housing 60 (a rear frame body 64 to be described later) is omitted.
  • the rear speaker unit 20 converts an audio signal based on audio data into a sound wave and outputs it.
  • the sound waves output from the rear speaker unit 20 (hereinafter referred to as "rear sound waves") are, for example, sound waves in the frequency range of low to medium ranges. In this case, the rear sound waves include a lower frequency band than the front sound waves.
  • the rear speaker unit 20 is arranged behind the display surface S (see FIG. 4) (at the rear of the display case 40).
  • the rear speaker unit 20 includes a pair of rear speaker boxes 21 (a right speaker box 21R, a left speaker box 21L). The specific configuration of the rear speaker unit 20 will be described later.
  • the subwoofer unit 30 converts an audio signal based on audio data into a sound wave and outputs it.
  • the sound waves output from the subwoofer unit 30 (hereinafter referred to as "sub sound waves") are, for example, sound waves in a bass frequency band. That is, unlike front sound waves and rear sound waves, sub-sound waves are sound waves that have low directivity and include a low frequency band.
  • the subwoofer unit 30 is arranged behind the display surface S (at the rear of the display case 40). The specific configuration of the subwoofer unit 30 will be described later.
  • each of the front speaker unit, rear speaker unit, and subwoofer unit may be connected to the signal processing section via a filter.
  • the filter is, for example, a high-pass filter that passes signals with frequencies higher than the cutoff frequency and blocks signals with frequencies lower than the cutoff frequency.
  • the display unit case 40 is a support member that supports the display unit D (see FIG. 4) from the back side.
  • the display case 40 is arranged behind the display D.
  • the size of the display unit case 40 is larger than the size of the display unit D in the vertical and horizontal directions.
  • the shape of the display part case 40 is a substantially rectangular case corresponding to the shape of the display part D.
  • the display case 40 is an example of a "display case" in the present invention.
  • FIG. 6 is a sectional view taken along the line AA in FIG. 3.
  • the following description regarding the angle adjustment mechanism 50 also refers to FIG. 5 as appropriate.
  • the angle adjustment mechanism 50 adjusts the tilt angle of the display section D in the vertical direction. That is, the display section D can be adjusted by the angle adjustment mechanism 50 so that the display surface S is tilted in the vertical direction.
  • the angle adjustment mechanism 50 is arranged at the rear of the display case 40.
  • the angle adjustment mechanism 50 includes a rod 51, a cylinder tube 52, a motor 53, a plate member 54, and a link member 55.
  • the rod 51 moves back and forth (expands and contracts) inside the cylinder tube 52 by driving the motor 53.
  • the rod 51 is housed in the cylinder tube 52 with a portion of one end protruding from the cylinder tube 52 .
  • the rod 51 is a so-called piston rod.
  • One end (upper end) of the rod 51 is connected to the display case 40 via a plate member 54 .
  • the cylinder tube 52 accommodates the rod 51 so that it can move forward and backward.
  • the cylinder tube 52 is a cylindrical member that is open at one end (distal end) and closed at the proximal end (lower side) and is capable of accommodating the rod 51 .
  • a proximal end of the cylinder tube 52 is connected to a link member 55 .
  • the motor 53 is a drive source that moves the rod 51 forward and backward.
  • Motor 53 is connected to cylinder tube 52 .
  • the rod 51, cylinder tube 52, and motor 53 constitute a so-called electric cylinder.
  • the plate member 54 supports the rod 51 and connects it to the display case 40.
  • the plate member 54 is attached to the rear surface of the display case 40.
  • the link member 55 is rotatably connected to the cylinder tube 52 and the stand 70, and the connection angle between the cylinder tube 52 and the stand 70 changes according to a change (change) in the tilt angle of the display section D. do.
  • the angle adjustment mechanism 50 uses the pushing and pulling force on the display case 40 when the rod 51 advances (extends) from the cylinder tube 52 and when the rod 51 retreats (shrinks) into the cylinder tube 52.
  • the tilt angle of the display section D in the vertical direction can be adjusted. That is, the angle adjustment mechanism 50 adjusts (changes) the tilt angle of the display section D in the vertical direction using the pushing and pulling force on the display section case 40 caused by the forward and backward movement (extension and contraction) of the rod 51. Therefore, a person (hereinafter referred to as a "viewer") Hm (see FIG. 8) who visually recognizes the images and videos of the present device 1 can adjust the tilt angle within a predetermined range to view the images and videos.
  • the housing 60 includes a display section D, a reception section RE, a signal processing section P, a front speaker unit 10, a rear speaker unit 20, a subwoofer unit 30, a display section case 40, an angle adjustment mechanism 50,
  • the hinge part 80 is accommodated.
  • the housing 60 includes a display section D, a reception section RE, a signal processing section P, a front speaker unit 10, a rear speaker unit 20, a subwoofer unit 30, a display section case 40, an angle adjustment mechanism 50,
  • the hinge portion 80 is protected from external physical impact.
  • the display section D, excluding the display surface S is housed in the housing 60. That is, the display surface S is housed in the housing 60 in a state where it can be viewed by the viewer Hm.
  • the housing 60 includes an upper frame 61, a lower frame 62, a side frame 63 (right side frame 63R, left side frame 63L), a rear frame 64, a front sound wave output hole 65h, and a rear sound wave output hole. It includes a hole 66h and an acoustic adjustment hole 67h.
  • the housing 60 is configured by combining an upper frame 61, a lower frame 62, a side frame 63, and a rear frame 64.
  • the upper frame body 61 is placed above the display section D to protect the display section D from physical impact from above.
  • the upper frame body 61 extends in the left-right direction and is connected to the side frame bodies 63.
  • the upper frame body 61 includes an upper plate portion 61a and a first front plate portion 61b.
  • the upper plate portion 61a protects the display portion D from above.
  • a part of the rear sound wave output hole 66h (an upper right sound wave output hole 66Rh2 and an upper left sound wave output hole 66Lh2, which will be described later) is arranged in the upper frame 61.
  • the first front plate part 61b is a plate part that is arranged from the front end of the upper plate part 61a to the upper part of the display part D and is inclined with respect to the display surface S.
  • the lower frame body 62 is arranged below the display section D to protect the display section D from physical impact from below.
  • the lower frame body 62 extends in the left-right direction and is connected to the side frame bodies 63.
  • the lower frame body 62 includes a lower plate portion 62a and a second front plate portion 62b.
  • the lower plate portion 62a protects the display portion D from below.
  • the lower frame body 62 includes a notch (not shown) with which a portion of the stand 70 engages.
  • the second front plate part 62b is a plate part that is arranged from the front end of the lower plate part 62a to the lower part of the display part D and is inclined with respect to the display surface S.
  • the side frame body 63 is arranged on the side of the display section D to protect the display section D from physical impact from the side.
  • the side frame body 63 extends in the vertical direction.
  • the upper end of the side frame body 63 is connected to the upper frame body 61.
  • the lower end of the side frame body 63 is connected to the lower frame body 62.
  • the right side frame 63R is placed on the right side of the display section D to protect the display section D from physical impact from the right side.
  • the right side frame 63R includes a right plate portion 63Ra and a third front plate portion 63Rb.
  • a part of the front speaker unit 10 is housed in the right side frame 63R.
  • the right plate portion 63Ra protects the display portion D from the right side.
  • a part of the rear sound wave output hole 66h (a right side sound wave output hole 66Rh1 to be described later) is arranged in the right side frame 63R.
  • the third front plate part 63Rb is a plate part that is arranged from the front end of the right plate part 63Ra to the side (right part) of the display part D and is inclined with respect to the display surface S.
  • a part of the front sound wave output hole 65h (an upper right sound wave output hole 65h1 and a lower right sound wave output hole 65h3, which will be described later) are arranged in the third front plate portion 63Rb.
  • the left side frame 63L is arranged on the left side of the display section D to protect the display section D from physical impact from the left side.
  • the left side frame 63L includes a left plate portion 63La and a fourth front plate portion 63Lb.
  • a part of the front speaker unit 10 is housed in the left frame 63L.
  • the left plate portion 63La protects the display portion D from the left side.
  • a part of the rear sound wave output hole 66h (left side sound wave output hole 66Lh1 to be described later) is arranged in the left side frame 63L.
  • the fourth front plate part 63Lb is a plate part that is arranged from the front end of the left plate part 63La to the side (left part) of the display part D and is inclined with respect to the display surface S.
  • a part of the front sound wave output hole 65h (upper left sound wave output hole 65h2 and lower left sound wave output hole 65h4, which will be described later) is arranged in the fourth front plate portion 63Lb
  • the rear frame body 64 is arranged at the rear of the display section D (display section case 40) and protects the display section D from physical impact from behind.
  • the upper portion of the rear frame body 64 is connected to the rear end portion of the upper plate portion 61a (upper frame body 61).
  • a lower portion of the rear frame body 64 is connected to a rear end portion of the lower plate portion 62a (lower frame body 62).
  • the right portion of the rear frame body 64 is connected to the right plate portion 63Ra (right side frame body 63R).
  • the left portion of the rear frame body 64 is connected to the left plate portion 63La (left side frame body 63L).
  • a rear speaker unit 20, a subwoofer unit 30, and an angle adjustment device are installed in a space constituted by the display section D (display section case 40), the rear frame 64, the right frame 63R, and the left frame 63L.
  • a mechanism 50 is housed.
  • a sound adjustment hole 67h is arranged in the rear frame body 64.
  • the front sound wave output hole 65h emits front sound waves from the side frame 63 (casing 60) to the front of the display surface S.
  • the front sound wave output hole 65h is an opening that penetrates the side frame body 63 in the front direction (front-rear direction).
  • the front sound wave output hole 65h includes four sound wave output holes (upper right sound wave output hole 65h1, upper left sound wave output hole 65h2, lower right sound wave output hole 65h3, and lower left sound wave output hole 65h4).
  • the upper right sound wave output hole 65h1 and the lower right sound wave output hole 65h3 are arranged in the third front plate portion 63Rb (right side frame 63R).
  • the upper left sound wave output hole 65h2 and the lower left sound wave output hole 65h4 are arranged in the fourth front plate portion 63Lb (left side frame 63L).
  • the upper right sound wave output hole 65h1 and the upper left sound wave output hole 65h2 are arranged corresponding to the pair of upper speakers 11.
  • the upper right sound wave output hole 65h1 and the upper left sound wave output hole 65h2 are arranged above the center of the device 1 in the vertical direction.
  • the lower right sound wave output hole 65h3 and the lower left sound wave output hole 65h4 are arranged corresponding to the pair of lower speakers 12.
  • the lower right sound wave output hole 65h3 and the lower left sound wave output hole 65h4 are arranged below the same center.
  • the size of the display section D is 65 inches.
  • the upper right sound wave output hole 65h1 and the lower right sound wave output hole 65h3 are spaced apart from each other by about 50 centimeters in the vertical direction.
  • the upper left sound wave output hole 65h2 is spaced apart from the lower left sound wave output hole 65h4 by about 50 centimeters. In this way, the so-called surround effect is enhanced by arranging the front sound wave output holes 65h at a distance in the vertical direction.
  • the rear sound wave output hole 66h emits rear sound waves guided to the sound guide portions (right sound guide portion 25R, left sound guide portion) (see FIGS. 11 and 12), which will be described later, to the outside of the housing 60.
  • the rear sound wave output hole 66h includes a right sound wave output hole 66Rh corresponding to the right speaker box 21R, and a left sound wave output hole 66Lh corresponding to the left speaker box 21L.
  • the function, shape, and size of the right sound wave output hole 66Rh are the same as the function, shape, and size of the left sound wave output hole 66Lh.
  • the only difference between the right sound wave output hole 66Rh and the left sound wave output hole 66Lh is the arrangement position in the housing 60. Therefore, the following configuration regarding the rear sound wave output hole 66h will be explained using the right sound wave output hole 66Rh as an example.
  • the right sound wave output hole 66Rh includes a right side sound wave output hole 66Rh1 and an upper right sound wave output hole 66Rh2.
  • the right side sound wave output hole 66Rh1 communicates with a right side sound guide section 25R1 (sound guide section) (see FIG. 13), which will be described later.
  • the right side sound wave output hole 66Rh1 is arranged in the right plate portion 63Ra (right side frame 63R).
  • the right side sound wave output hole 66Rh1 is an opening that penetrates rightward (laterally) in the right plate portion 63Ra (right side frame 63R).
  • the upper right sound wave output hole 66Rh2 communicates with the upper right sound guide section 25R2 (sound guide section), which will be described later.
  • the upper right sound wave output hole 66Rh2 is arranged in the upper plate portion 61a (upper frame body 61).
  • the upper right sound wave output hole 66Rh2 is an opening that penetrates upward (in the vertical direction) in the upper plate portion 61a (upper frame body 61).
  • the function, shape, and size of the right sound wave output hole 66Rh are the same as those of the left sound wave output hole 66Lh. That is, the left sound wave output hole 66Lh includes a left side sound wave output hole 66Lh1 and an upper left sound wave output hole 66Lh2.
  • Each of the right side sound wave output hole 66Rh1 and the left side sound wave output hole 66Lh1 is an example of a “side sound wave output hole” in the present invention.
  • the upper right sound wave output hole 66Rh2 and the upper left sound wave output hole 66Lh2 are examples of "upper sound wave output holes” in the present invention.
  • the sound adjustment hole 67h adjusts the sound of the rear sound wave emitted from the rear sound wave output hole 66h.
  • the sound adjustment hole 67h adjusts the air pressure within the sound guide section (the right side sound guide section 25R1, the upper right sound guide section 25R2) for the vibration of the right speaker 22R (see FIG. 9), which will be described later.
  • the sound adjustment hole 67h includes a right sound adjustment hole 67Rh corresponding to the right speaker box 21R, and a left sound adjustment hole 67Lh corresponding to the left speaker box 21L.
  • the function, shape, and size of the right sound adjustment hole 67Rh are the same as those of the left sound adjustment hole 67Lh.
  • the only difference between the right sound adjustment hole 67Rh and the left sound adjustment hole 67Lh is the arrangement position in the rear frame 64 (casing 60). Therefore, the following configuration regarding the sound adjustment hole 67h will be explained using the right sound adjustment hole 67Rh as an example.
  • the right sound adjustment hole 67Rh includes a first right sound adjustment hole 67Rh1 and a second right sound adjustment hole 67Rh2.
  • the first right acoustic adjustment hole 67Rh1 communicates with a right side characteristic hole 26Rh1 (right acoustic characteristic hole 26Rh), which will be described later.
  • the first right sound adjustment hole 67Rh1 is arranged in the rear frame 64.
  • the first right sound adjustment hole 67Rh1 is a hole extending in the vertical direction.
  • the second right acoustic adjustment hole 67Rh2 communicates with an upper right characteristic hole 26Rh2 (right acoustic characteristic hole 26Rh), which will be described later.
  • the second right sound adjustment hole 67Rh2 is arranged in the rear frame body 64.
  • the second sound adjustment hole 67R2 is a hole extending in the left-right direction.
  • the first right sound adjustment hole 67Rh1 and the second right sound adjustment hole 67Rh2 are openings that penetrate rearward (front-back direction) in the rear frame 64.
  • the function, shape, and size of the right sound adjustment hole 67Rh are the same as the function, shape, and size of the left sound adjustment hole 67Lh. That is, the left sound adjustment hole 67Lh includes a first left sound adjustment hole 67Lh1 and a second left sound adjustment hole 67Lh2.
  • Each of the first right sound adjustment hole 67Rh1 and the first left sound adjustment hole 67Lh1 is an example of a "first sound adjustment hole” in the present invention.
  • Each of the second right sound adjustment hole 67Rh2 and the second left sound adjustment hole 67Lh2 is an example of a "second sound adjustment hole” in the present invention.
  • the stand 70 is a stand for placing the device 1 on a mounting surface Su such as a floor or a pedestal.
  • FIG. 7 is a front perspective view showing a part of the internal structure of the device 1. As shown in FIG. In the figure, illustration of the lower frame body 62 is omitted for convenience of explanation.
  • the hinge portion 80 is arranged at the lower part of the display case 40 and connects the display case 40 (see FIG. 5) and the stand 70.
  • the hinge section 80 maintains the adjusted (changed) state of the display section D when the tilt angle of the display section D is adjusted by the angle adjustment mechanism 50 (see FIG. 5).
  • the front speaker unit 10 includes a pair of upper speakers 11 and a pair of lower speakers 12.
  • the pair of upper speakers 11 are arranged above the center of the short side of the display section D.
  • the pair of lower speakers 12 are arranged below the center of the short side of the display section D.
  • FIG. 8 is a schematic diagram showing the traveling direction of front sound waves output from the front speaker unit 10.
  • the figure shows the traveling direction of the front sound waves output from the pair of upper speakers 11 (L1 indicated by the two-dot chain line) and the traveling direction of the front sound waves output from the pair of lower speakers 12 (L2 indicated by the two-dot chain line).
  • the relationship between Hm and the viewer Hm is schematically shown.
  • the figure also shows how the display surface S is arranged so as to be inclined with respect to the mounting surface Su, and how the viewer Hm is watching while sitting on a chair Ch.
  • a traveling direction L1 of front sound waves output from a pair of upper speakers 11 and a traveling direction L2 of front sound waves output from a pair of lower speakers 12 are schematically shown.
  • the pair of upper speakers 11 and the pair of lower speakers 12 are Indicates the state of being placed outside of. The following description also refers to FIGS. 2 and 4.
  • Each of the pair of upper speakers 11 outputs a front sound wave.
  • the pair of upper speakers 11 includes an upper right speaker 11R and an upper left speaker 11L (not shown in FIG. 2).
  • the upper right speaker 11R outputs (emits sound) forward the front sound wave (sound) for the right channel among the front sound waves.
  • the upper right speaker 11R is disposed at the upper part of the display unit case 40 on the right side of the display unit D via an upper right speaker holding member (not shown).
  • the upper right speaker 11R is arranged (attached) with the surface from which sound waves are output (hereinafter referred to as "output surface") facing forward (for example, in front of the mounting surface Su in the horizontal direction).
  • the traveling direction L1 of the front sound wave output from the upper right speaker 11R is horizontal to the mounting surface Su.
  • the upper left speaker 11L outputs (emits sound) forward the front sound wave (sound) for the left channel among the front sound waves.
  • the upper left speaker 11L is arranged (attached) to the upper part of the display case 40 on the left side of the display D via an upper left speaker holding member (not shown).
  • the upper left speaker 11L is arranged with its output surface facing forward (for example, forward in the horizontal direction with respect to the mounting surface Su).
  • the traveling direction L1 of the front sound wave output from the upper left speaker 11L is horizontal to the mounting surface Su. That is, the traveling direction L1 of the front sound waves output from the upper left speaker 11L is the same as the traveling direction L1 of the front sound waves output from the upper right speaker 11R.
  • stereo mode sound waves front sound waves
  • front sound waves are output forward from the pair of upper speakers 11 by the front sound waves for the right channel and the front sound waves for the left channel.
  • Each of the pair of lower speakers 12 outputs a front sound wave.
  • the pair of lower speakers 12 includes a lower right speaker 12R and a lower left speaker 12L (not shown in FIG. 2).
  • the lower right speaker 12R outputs (emits sound) forward the front sound wave (sound) for the right channel among the front sound waves.
  • the lower right speaker 12R is arranged at the lower part of the display unit case 40 on the right side of the display unit D via a lower right speaker holding member (not shown).
  • the lower right speaker 12R is arranged with its output surface facing forward (eg, forward perpendicular to the in-plane direction of the display surface S).
  • the traveling direction L2 of the front sound wave output from the lower right speaker 12R is perpendicular to the in-plane direction of the display surface S.
  • "In-plane direction of display surface S" is a direction parallel to display surface S.
  • the lower left speaker 12L outputs (emits sound) forward the front sound wave (sound) for the left channel among the front sound waves.
  • the lower left speaker 12L is arranged at the lower part of the display unit case 40 on the left side of the display unit D via a lower left speaker holding member (not shown).
  • the lower left speaker 12L is arranged with its output surface facing forward (eg, forward perpendicular to the in-plane direction of the display surface S).
  • the traveling direction L2 of the front sound wave output from the lower left speaker 12L is perpendicular to the in-plane direction of the display surface S. That is, the traveling direction L2 of the front sound wave output from the lower right speaker 12R and the traveling direction L2 of the front sound wave output from the lower left speaker 12L are the same.
  • the traveling direction L1 of the front sound waves output from the upper right speaker 11R and the traveling direction L1 of the front sound waves output from the upper left speaker 11L are the same as the traveling direction L2 of the front sound waves output from the lower right speaker 12R, and the traveling direction L2 of the front sound waves output from the lower right speaker 12R. This is different from the traveling direction L2 of the front sound waves output from the speaker 12L. In other words, the traveling direction L1 of the front sound waves output from the pair of upper speakers 11 is different from the traveling direction L2 of the front sound waves output from the pair of lower speakers 12.
  • the traveling direction L1 of the front sound waves output from the pair of upper speakers 11 and the traveling direction L2 of the front sound waves output from the pair of lower speakers 12 both reach the ear Ea of the viewer Hm. This is the direction we are headed.
  • stereo mode sound waves front sound waves
  • front sound waves are output forward by a front sound wave for the right channel and a front sound wave for the left channel.
  • the front sound wave for the right channel output from the upper right speaker 11R is a sound wave with the same component as the front sound wave for the right channel output from the lower right speaker 12R.
  • the front sound wave for the left channel outputted from the upper left speaker 11L is a sound wave having the same component as the front sound wave for the left channel outputted from the lower left speaker 12L. That is, the components of the front sound waves (front sound waves in stereo mode) output from the pair of upper speakers 11 are the same as the components of the front sound waves (front sound waves in stereo mode) output from the pair of lower speakers 12.
  • the present device 1 can provide the audience with a realistic sound spread from the front speaker unit 10. As a result, the surround effect is enhanced.
  • the upper right speaker 11R is arranged with a distance of about 50 centimeters from the lower right speaker 12R in the vertical direction.
  • the upper left speaker 11L is arranged at a distance of about 50 centimeters from the lower left speaker 12L in the vertical direction.
  • the pair of upper speakers 11 are arranged at a distance from the pair of lower speakers 12 in the vertical direction, thereby further enhancing the surround effect.
  • the rear speaker unit 20 includes a pair of rear speaker boxes 21.
  • the pair of rear speaker boxes 21 are configured by each component described later and output rear sound waves.
  • the pair of rear speaker boxes 21 includes a right speaker box 21R and a left speaker box 21L.
  • the right speaker box 21R is arranged on the right side of the rear of the display surface S (see FIG. 4) (the rear of the display case 40).
  • the left speaker box 21L is arranged on the left side of the rear of the display surface S (the rear of the display case 40).
  • the function, shape, and size of the right speaker box 21R are the same as those of the left speaker box 21L.
  • the only difference between the right speaker box 21R and the left speaker box 21L is the arrangement position in the display case 40. Therefore, the following configuration regarding the rear speaker box 21 will be explained using the right speaker box 21R as an example.
  • FIG. 9 is a plan view showing a schematic configuration of the right speaker box 21R (rear speaker box 21).
  • FIG. 10 is an exploded perspective view of the right speaker box 21R of FIG. 9.
  • FIG. 11 is a perspective view showing a schematic configuration of the right holding member 23R.
  • FIG. 12 is a sectional view taken along the line BB in FIG.
  • FIG. 13 is a sectional view taken along line CC in FIG.
  • FIG. 14 is a schematic cross-sectional view taken along line EE in FIG. 3. In this figure, illustration of some structural members and lines is omitted except for those necessary for explanation.
  • the right speaker box 21R includes a right speaker 22R, a right holding member 23R, a right sound wave reflecting member 24R, a right sound guide part 25R (right side sound guide part 25R1, right upper sound guide part 25R2), and a right acoustic characteristic hole.
  • 26Rh right side characteristic hole 26Rh1, right upper characteristic hole 26Rh2
  • right sound guide hole 27Rh right side sound guide hole 27Rh1, right upper sound guide hole 27Rh2
  • the right speaker 22R outputs (emits) a rear sound wave (sound) for the right channel among the rear sound waves.
  • the right speaker 22R is arranged with its output surface facing rearward. That is, the direction in which the rear sound waves are output from the right speaker 22R is the rear direction.
  • the right speaker may be placed with its output surface facing forward. At this time, the direction in which the rear sound waves are output from the right speaker is the front direction.
  • the right holding member 23R holds the right speaker 22R.
  • the right holding member 23R is arranged behind the display surface S (at the rear of the display case 40). Further, the right holding member 23R is arranged between the display section D and the right sound wave reflecting member 24R.
  • the shape of the right holding member 23R is approximately "L" shaped.
  • the right holding member 23R includes a right speaker holding portion 231R, a right inclined surface 232R, and a right wall portion 233R.
  • the right speaker holding section 231R holds the right speaker 22R.
  • the right inclined surface 232R constitutes a part of the right sound guiding section 25R.
  • the right inclined surface 232R is connected to the right speaker holding portion 231R.
  • the right inclined surface 232R includes a right inclined surface 232R1 and an upper right inclined surface 232R2.
  • the right side inclined surface 232R1 extends from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side.
  • the right side inclined surface 232R1 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side.
  • the right side inclined surface 232R1 is a tapered inclined surface.
  • the upper right inclined surface 232R2 extends from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side.
  • the upper right inclined surface 232R2 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side.
  • the upper right inclined surface 232R2 is a tapered inclined surface.
  • each of the right side inclined surface and the right upper inclined surface may be a curved surface that is curved and inclined.
  • the right wall portion 233R is erected rearward from the right inclined surface 232R.
  • the right wall portion 233R constitutes a part of the sound guiding portion (right sound guiding portion 25R) together with the right inclined surface 232R.
  • the right wall portion 233R includes a right side wall portion 233R1 and an upper right wall portion 233R2.
  • FIG. 15 is a view taken along arrow F in FIG.
  • FIGS. 9 to 14 will also be referred to as appropriate (the same applies to FIG. 16).
  • the right side wall portion 233R1 is erected rearward from the right side inclined surface 232R1 from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side.
  • the right side wall portion 233R1 gradually slopes upward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. That is, the direction in which the right side wall portion 233R1 is inclined is different from the direction in which the right side inclined surface 232R1 is inclined.
  • the slope of the right side wall portion 233R1 is a curved surface.
  • the curved surface of the right side wall portion 233R1 is a so-called exponential curve. Note that the slope of the right side wall portion may be a tapered slope that gradually slopes upward.
  • FIG. 16 is a view taken along arrow G in FIG. 9.
  • the upper right wall portion 233R2 is erected rearward from the upper right inclined surface 232R2 from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side.
  • the upper right wall portion 233R2 gradually slopes rightward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. That is, the direction in which the upper right wall portion 233R2 is inclined is different from the direction in which the upper right inclined surface 232R2 is inclined.
  • the slope of the upper right wall portion 233R2 is a curved surface.
  • the curved surface of the upper right wall portion 233R2 is a so-called exponential curve.
  • the upper right wall portion 233R2 is inclined in a direction approaching the right side wall portion 233R1. Note that the slope of the upper right wall portion may be a tapered slope that gradually slopes toward the right.
  • the right speaker holding portion 231R is integrally configured with a right inclined surface 232R (right side inclined surface 232R1, right upper inclined surface 232R2) and a right wall portion 233R (right side wall portion 233R1, right upper wall portion 233R2). That is, the right speaker holding portion 231R, the right inclined surface 232R, and the right wall portion 233R are each a part of the right holding member 23R.
  • the right speaker holding portion may be configured with the right inclined surface (right side inclined surface, right upper inclined surface) and the right wall portion (right side wall portion, right upper wall portion) as separate members.
  • the right sound wave reflecting member 24R reflects the rear sound wave output from the right speaker 22R.
  • the right sound wave reflecting member 24R is arranged behind the display section D and the right holding member 23R.
  • the right sound wave reflecting member 24R is assembled to the right holding member 23R.
  • the shape of the right sound wave reflecting member 24R is approximately "L" shaped, corresponding to the shape of the right holding member 23R.
  • the right sound guiding portion 25R guides the rear sound waves reflected by the right sound wave reflecting member 24R to the right and upward. That is, the right sound guide portion 25R guides the rear sound wave in a direction different from the direction in which it enters the right sound wave reflection member 24R.
  • the right sound guide section 25R is composed of a right inclined surface 232R, a right wall section 233R, and a right sound wave reflecting member 24R. In other words, the right sound guiding section 25R is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the right sound guide section 25R includes a right sound guide section 25R1 and an upper right sound guide section 25R2.
  • the right side sound guiding portion 25R1 guides the rear sound wave reflected by the right sound wave reflecting member 24R from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side.
  • the right side sound guide section 25R1 is a sound guide space extending in the left-right direction and is configured of a right side inclined surface 232R1, a right side wall section 233R1, and a right sound wave reflecting member 24R. That is, the right side sound guide section 25R1 is composed of the right holding member 23R and the right sound wave reflecting member 24R.
  • the right side sound guide section 25R1 moves from the right speaker holding section 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 between the right speaker holding section 231R (right speaker 22R) and the right side sound wave output hole 66Rh1. It has an inclined surface that slopes toward the side. This inclined surface is the right inclined surface 232R1. In other words, the right side sound guide portion 25R1 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side.
  • the right side wall portion 233R1 is inclined upward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. That is, the right side sound guide portion 25R1 is inclined forward and upward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. That is, in the internal space of the right side sound guiding section 25R1, the width in the front-rear direction and the width in the vertical direction increase from the right speaker holding section 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side ( spread).
  • the cross-sectional area perpendicular to the left-right direction (the cross-sectional area in the front-rear direction and up-down direction perpendicular to the left-right direction) of the right side sound guide portion 25R1 is the right side sound wave from the right speaker holding portion 231R (right speaker 22R) side. It gradually expands toward the output hole 66Rh1 side.
  • the cross-sectional area of the right sound guiding portion 25R1 in the direction perpendicular to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and vertical direction perpendicular to the left-right direction) is equal to that of the right speaker holding portion 231R (right speaker 22R). ) side toward the right side sound wave output hole 66Rh1 side.
  • the upper right sound guiding portion 25R2 guides the rear sound waves reflected by the right sound wave reflecting member 24R from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side.
  • the upper right sound guide portion 25R2 is a sound guide space extending in the vertical direction and includes an upper right inclined surface 232R2, an upper right wall portion 233R2, and a right sound wave reflecting member 24R.
  • the upper right sound guiding section 25R2 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the upper right sound guide section 25R2 moves from the right speaker holding section 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 between the right speaker holding section 231R (right speaker 22R) and the upper right sound wave output hole 66Rh2. It has an inclined surface that slopes toward the side. This inclined surface is the upper right inclined surface 232R2. In other words, the upper right sound guide portion 25R2 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side.
  • the upper right wall portion 233R2 is inclined rightward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. That is, the upper right sound guide portion 25R2 is inclined forward and rightward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. That is, in the internal space of the upper right sound guide section 25R2, the width in the front-rear direction and the width in the left-right direction increase from the right speaker holding section 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side ( spread).
  • the cross-sectional area perpendicular to the vertical direction (the cross-sectional area in the front-rear direction and the horizontal direction perpendicular to the vertical direction) of the upper right sound guiding portion 25R2 is the same as the upper right sound wave from the right speaker holding portion 231R (right speaker 22R) side. It gradually expands toward the output hole 66Rh2 side.
  • the cross-sectional area of the right side sound guiding portion 25R1 in the direction perpendicular to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and the left-right direction perpendicular to the up-down direction) is the same as that of the right speaker holding portion 231R (right speaker 22R). ) side toward the upper right sound wave output hole 66Rh2 side.
  • the right acoustic characteristic hole 26Rh communicates with the outside of the rear frame 64 (casing 60) via the right acoustic adjustment hole 67Rh (acoustic adjustment hole 67h).
  • the right acoustic characteristic hole 26Rh is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the right acoustic characteristic hole 26Rh includes a right side characteristic hole 26Rh1 and an upper right characteristic hole 26Rh2.
  • the right side characteristic hole 26Rh1 communicates with the outside of the rear frame 64 (casing 60) via the first right sound adjustment hole 67Rh1 (sound adjustment hole 67h).
  • the right side characteristic hole 26Rh1 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the right side characteristic hole 26Rh1 is arranged on the opposite side of the right side sound guiding portion 25R1 with respect to the right speaker 22R in the left-right direction.
  • the right side characteristic hole 26Rh1 is a hole extending in the vertical direction.
  • the upper right characteristic hole 26Rh2 communicates with the outside of the rear frame 64 (casing 60) via the second right acoustic adjustment hole 67Rh2 (acoustic adjustment hole 67h).
  • the upper right characteristic hole 26Rh2 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the upper right characteristic hole 26Rh2 is arranged on the opposite side of the upper right sound guide portion 25R2 with respect to the right speaker 22R in the vertical direction.
  • the upper right characteristic hole 26Rh2 is a hole extending in the left-right direction.
  • the right sound guide hole 27Rh emits the rear sound wave guided into the right sound guide part 25R to the outside of the housing 60 via the right sound wave output hole 66Rh.
  • the right sound guiding hole 27Rh is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the right sound guide hole 27Rh is an outlet of the right sound guide part 25R.
  • the right sound guide hole 27Rh includes a right sound guide hole 27Rh1 and an upper right sound guide hole 27Rh2.
  • the right side sound guide hole 27Rh1 emits the rear sound wave guided to the right side sound guide portion 25R1 to the outside of the right side frame 63R (casing 60) via the right side sound wave output hole 66Rh1.
  • the right side sound guide hole 27Rh1 is an outlet of the right side sound guide part 25R1.
  • the right side sound guiding hole 27Rh1 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the upper right sound guide hole 27Rh2 emits rear sound waves guided to the upper right sound guide portion 25R2 to the outside of the upper frame body 61 (casing 60) via the upper right sound wave output hole 66Rh2.
  • the upper right sound guiding hole 27Rh2 is an outlet of the upper right sound guiding portion 25R2.
  • the upper right sound guiding hole 27Rh2 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
  • the function, shape, and size of the right speaker box 21R are the same as the function, shape, and size of the left speaker box 21L. That is, the left speaker box 21L includes a left speaker (not shown), a left holding member 23L (see FIG. 5), a left sound wave reflecting member 24L (see FIG. 5), a left sound guide section (not shown), and a left speaker box 21L. It includes an acoustic characteristic hole 26Lh and a left sound guide hole (not shown).
  • the left holding member 23L includes a left speaker holding part (not shown), a left inclined surface (not shown), and a left wall part (not shown).
  • the left inclined surface includes a left inclined surface (not shown) and an upper left inclined surface (not shown).
  • the left wall includes a left side wall (not shown) and an upper left wall (not shown).
  • the left sound guide section includes a left side sound guide section (not shown) and an upper left sound guide section (not shown).
  • the left acoustic characteristic hole 26Lh includes a left side characteristic hole 26Lh1 and an upper left characteristic hole 26Lh2.
  • the left sound guide hole includes a left side sound guide hole (not shown) and an upper left sound guide hole (not shown).
  • the right speaker 22R and the left speaker are each an example of a "rear speaker” in the present invention.
  • the right holding member 23R and the left holding member 23L are each an example of a “holding member” in the present invention.
  • the right sound wave reflecting member 24R and the left sound wave reflecting member 24L are each an example of a "sound wave reflecting member” in the present invention.
  • the right sound guide section 25R and the left sound guide section are each an example of a "sound guide section” in the present invention.
  • the right side sound guide section 25R1 and the left side sound guide section are each an example of a "side sound guide section” in the present invention.
  • the upper right sound guide section 25R2 and the upper right sound guide section are examples of the "upper sound guide section” in the present invention.
  • the right acoustic characteristic hole 26Rh and the left acoustic characteristic hole 26Lh are each an example of an "acoustic characteristic hole” in the present invention.
  • Each of the right side characteristic hole 26Rh1 and the left side characteristic hole 26Lh1 is an example of a "side acoustic characteristic hole” in the present invention.
  • the upper right characteristic hole 26Rh2 and the upper left characteristic hole 26Lh2 are examples of the "upper acoustic characteristic hole” in the present invention.
  • the left speaker outputs (emits sound) rear sound waves (audio) for the left channel among the rear sound waves.
  • the left speaker is arranged with its output surface facing rearward. That is, the direction in which the rear sound waves are output from the left speaker is the rear direction.
  • the left speaker may be placed with its output surface facing forward. At this time, the direction in which the rear sound waves are output from the left speaker is the front direction.
  • the right speaker 22R outputs (emits) rear sound waves (audio) for the right channel among the rear sound waves. Therefore, stereo mode sound waves (rear sound waves) are output from the right speaker 22R and the left speaker by the rear sound waves for the right channel output from the right speaker and the rear sound waves for the left channel output from the left speaker. be done.
  • a part of the rear sound wave (audio) for the right channel output from the right speaker 22R is reflected to the right by the right sound wave reflecting member 24R, and then passes through the right sound guide section 25R1 and the right sound guide part 25R1.
  • the sound is emitted from the right side sound wave output hole 66Rh1 to the outside of the right side frame 63R (casing 60) via the hole 27Rh1.
  • another part of the rear sound wave (audio) for the right channel output from the right speaker 22R is reflected upward by the right sound wave reflecting member 24R, and then passes through the upper right sound guide section 25R2 and the upper right sound guide.
  • the sound is emitted from the upper right sound wave output hole 66Rh2 to the outside of the upper frame body 61 (casing 60) via the hole 27Rh2.
  • a part of the rear sound wave (audio) for the left channel output from the left speaker is reflected to the left by the left sound wave reflecting member 24L, and then passes through the left sound guide section and the left sound guide hole.
  • the sound is emitted from the left side sound wave output hole 66Lh1 to the outside of the left side frame 63L (casing 60) through the left side sound wave output hole 66Lh1.
  • another part of the rear sound wave (audio) for the left channel output from the left speaker 22L is reflected upward by the left sound wave reflecting member 24L, and then is sent to the upper left sound guide section and the upper left sound guide hole.
  • the sound is emitted from the upper left sound wave output hole 66Lh2 to the outside of the upper frame body 61 (casing 60).
  • the rear sound waves output from the rear speakers (right speaker 22R, left speaker) are reflected within the sound guide parts (right sound guide part 25R, left sound guide part), and are reflected in the lateral sound wave output holes (right side sound guide part 25R, left sound guide part).
  • the housing 60 (right side frame 63R, left side frame 63L, The sound is emitted to the outside of the upper frame body 61).
  • the present device 1 uses the rear speaker unit 20 to cause rear sound waves to reach the viewer from four directions. Therefore, the present device 1 can provide the audience with a realistic sound spread. Furthermore, the present device 1 uses the rear speaker unit 20 to cause rear sound waves having a time difference from the front sound waves to reach the viewer from four directions. Therefore, the present device 1 can provide the audience with a realistic sound spread. As a result, the surround effect is enhanced.
  • the subwoofer unit 30 includes a subwoofer 31 and a subwoofer box 32.
  • the subwoofer 31 outputs sub-sound waves that are a mixture of sound waves for the right channel and sound waves for the left channel.
  • the subwoofer 31 is arranged with its output surface facing downward.
  • the subwoofer box 32 holds the subwoofer 31 and accommodates it inside.
  • the subwoofer box 32 is arranged at the lower part of the display case 40 at the substantially center thereof.
  • the sub-sound waves output from the subwoofer 31 go around below the housing 60 and reach the viewer.
  • the present device 1 uses the subwoofer unit 30 to deliver low-frequency sub-sound waves with low directivity, which are different from front and rear sound waves, to the viewer, thereby creating a sense of realism for the viewer. It can provide a wide range of sound. As a result, the surround effect is enhanced.
  • the device 1 includes a rear speaker unit 20 that outputs rear sound waves, and a housing 60 that houses the rear speaker unit 20.
  • the housing 60 includes a rear sound wave output hole 66h that emits rear sound waves to the outside of the housing 60.
  • This device 1 causes second sound waves to reach the viewer from four directions from the rear speaker unit 20. Thereby, the present device 1 can provide a realistic sound spread to the listener.
  • the device 1 includes, in addition to the rear speaker unit 20, the front speaker unit 10 that outputs front sound waves.
  • the housing 60 includes a front sound wave output hole that emits front sound waves to the outside of the housing 60 in addition to the rear sound wave output hole.
  • the present device 1 causes front sound waves to reach the viewer from the front speaker unit 10, and rear sound waves to reach the viewer from four directions with time differences from the front sound waves from the rear speaker unit 20. Thereby, the present device 1 can provide a realistic sound spread to the listener.
  • the cross-sectional area of the right side sound guiding portion 25R1 in the direction orthogonal to the traveling direction of rear sound waves is It gradually expands from the speaker holding portion 231R (right speaker 22R) side toward the right side sound wave output hole 66Rh1 side.
  • the cross-sectional area of the upper right sound guiding portion 25R2 in the direction perpendicular to the traveling direction of the rear sound wave is the same as that of the right speaker holding portion 231R (right speaker 22R).
  • this device 1 realizes the so-called horn effect.
  • the right sound guide portion 25R communicates with the outside of the housing 60 via the right sound adjustment hole 67Rh. Therefore, in the present device 1, air pressure within the right sound guide section 25R can be adjusted to suppress air from becoming trapped inside the right sound guide section 25R. As a result, the acoustic characteristics inside the right sound guide section 25R are adjusted as appropriate.
  • the upper right speaker 11R is arranged with a distance of about 50 centimeters from the lower right speaker 12R in the vertical direction.
  • the upper left speaker 11L is arranged at a distance of about 50 centimeters from the lower left speaker 12L in the vertical direction.
  • the pair of upper speakers 11 are arranged at a distance from the pair of lower speakers 12 in the vertical direction, thereby further enhancing the surround effect produced by the present device 1.
  • the cross-sectional area of the right side sound guiding portion 25R1 in the direction orthogonal to the traveling direction of rear sound waves is the same as that for holding the right speaker. It gradually expands from the portion 231R (right speaker 22R) side toward the right side sound wave output hole 66Rh1 side.
  • the cross-sectional area of the upper right sound guiding portion 25R2 in the direction orthogonal to the traveling direction of the rear sound wave is the same as that of the right speaker holding portion 231R (right speaker 22R).
  • the cross-sectional area in the direction perpendicular to the traveling direction of the rear sound wave (the cross-sectional area in the front-rear direction and vertical direction perpendicular to the left-right direction) of the right sound guide part is the same as that of the right speaker holding part (right speaker). It may be constant from the side toward the right side sound wave output hole side.
  • the cross-sectional area of the upper right sound guide section in the direction perpendicular to the traveling direction of rear sound waves is from the right speaker holding part (right speaker) side to the upper right It may be constant toward the sound wave output hole side. Even with such a configuration, the surround effect produced by the present device 1 is enhanced compared to conventional display devices.
  • the sound waves output from each of the front speaker unit 10, rear speaker unit 20, and subwoofer unit 30 are stereo mode sound waves.
  • the sound waves output from each unit may be monaural mode sound waves.
  • the present device may include a covering member around the front sound wave output hole in order to prevent dust from entering the front speaker unit from the outside. Further, the present device may include a covering member around the rear sound wave output hole in order to prevent dust from entering the rear speaker unit from the outside.
  • the present device may include a covering member around the sound adjustment hole in order to prevent dust from entering the sound guide section from the outside.
  • the length of the right characteristic hole extending in the vertical direction and the length of the upper right characteristic hole extending in the left and right direction are appropriately set according to the manner in which acoustic characteristics are to be characterized. That is, for example, the length of the right side characteristic hole extending in the vertical direction may be a length that corresponds to the right speaker holding part without extending over the right upper inclined surface. Similarly, the length of the upper right characteristic hole extending in the left-right direction may be a length corresponding to the right speaker holding portion without extending over the right side inclined surface.
  • the length of the first right acoustic adjustment hole extending in the vertical direction may be approximately the same length as the length of the right side characteristic hole extending in the vertical direction.
  • the length of the second right acoustic adjustment hole extending in the left-right direction may be approximately the same as the length of the right upper characteristic hole extending in the left-right direction.
  • the right acoustic characteristic hole may be composed of only one of the right side characteristic hole and the upper right characteristic hole.
  • the right sound adjustment hole may be comprised only of adjustment holes that correspond to (communicate with) either one of the first right sound adjustment hole and the second right sound adjustment hole. .
  • the arrangement angles of the pair of upper speakers and the pair of lower speakers inside the housing may be variable. That is, for example, depending on the tilt of the display section (display surface) by the angle adjustment mechanism or the viewing position of the viewer, the viewer can use, for example, a remote control to adjust the pair of upper speakers and the pair of lower speakers. By changing the arrangement angle of each speaker inside the housing, you can enjoy listening to and viewing this device with ideal acoustics.

Abstract

Provided is a display device which is equipped with a plurality of speakers and which realizes excellent sound effect with a novel configuration. 　A display device 1 has: a display D equipped with a display surface S for displaying images; and a rear speaker unit 20 that is disposed behind the display surface and outputs rear sound waves. The rear speaker unit is equipped with: a sound wave reflective member 24R, 24L for reflecting rear sound waves; and at least one sound guide part 25R, 25L for guiding the rear sound waves reflected by the sound wave reflective member in a direction different from a direction in which the rear sound waves enter the sound wave reflective member. Rear sound wave output holes 66h for externally radiating the rear sound waves guided by the sound guide part are provided.

Description

表示装置display device
　本発明は、表示装置に関する。 The present invention relates to a display device.
　テレビジョン装置やＰＣ（Personal Computer）等の表示装置として、画像や映像を表示すると共に、画像や映像に応じた音波（音声）を出力するものが存在する。表示装置は、表示部（ディスプレイ）とスピーカとを備える。表示部は、画像や映像を表示する。表示部は、例えば、有機ＥＬ（Electro Luminescence）ディスプレイや液晶ディスプレイなどである。スピーカは、画像や映像に応じた電気信号を音波（音声）に変換して出力する。 There are display devices such as television devices and PCs (Personal Computers) that display images and videos and output sound waves (sounds) corresponding to the images and videos. The display device includes a display section (display) and a speaker. The display section displays images and videos. The display unit is, for example, an organic EL (Electro Luminescence) display or a liquid crystal display. The speaker converts an electrical signal corresponding to an image or video into a sound wave (sound) and outputs it.
　このような表示装置として、複数のスピーカを備えた様々な表示装置が知られている（例えば、特許文献１－３参照）。 Various display devices equipped with a plurality of speakers are known as such display devices (see, for example, Patent Documents 1 to 3).
　複数のスピーカは、中高音域の音波を出力するスピーカや、低音域の音波を出力するスピーカなど、出力帯域の異なるスピーカを含む。複数のスピーカそれぞれから出力された音波は、表示装置の外部に放音される。 The plurality of speakers include speakers with different output bands, such as a speaker that outputs sound waves in the mid-high range and a speaker that outputs sound waves in the low range. The sound waves output from each of the plurality of speakers are emitted to the outside of the display device.
特開２０１８－１２９６８６号公報Japanese Patent Application Publication No. 2018-129686 特開２００６－３３７８５号公報Japanese Patent Application Publication No. 2006-33785 特許第６４６３１２９号公報Patent No. 6463129
　本発明は、複数のスピーカを備える表示装置において、新規な構成で優れた音響効果を実現する表示装置を提供することを目的とする。 An object of the present invention is to provide a display device equipped with a plurality of speakers that achieves excellent acoustic effects with a novel configuration.
　本発明に係る表示装置は、画像が表示される表示面を備えるディスプレイと、表示面の後方に配置されて、リア音波を出力するリアスピーカユニットと、を有してなり、リアスピーカユニットは、リア音波を反射する音波反射部材と、音波反射部材で反射されたリア音波を、リア音波が音波反射部材に入射する方向とは異なる方向に導く少なくとも１つの音導部と、を備え、音導部に導かれたリア音波を、外部に放音するリア音波出力孔、を有してなることを特徴とする。 A display device according to the present invention includes a display including a display surface on which an image is displayed, and a rear speaker unit disposed behind the display surface and outputting rear sound waves, the rear speaker unit comprising: A sound guide comprising: a sound wave reflecting member that reflects rear sound waves; and at least one sound guiding portion that guides the rear sound waves reflected by the sound wave reflecting member in a direction different from the direction in which the rear sound waves are incident on the sound wave reflecting member. It is characterized by having a rear sound wave output hole that emits rear sound waves guided to the rear sound wave to the outside.
　本発明は、複数のスピーカを備える表示装置において、新規な構成で優れた音響効果を実現できる。 The present invention can achieve excellent acoustic effects with a novel configuration in a display device equipped with a plurality of speakers.
本発明に係る表示装置の実施の形態を示すブロック図である。1 is a block diagram showing an embodiment of a display device according to the present invention. 図１の表示装置の正面斜視図である。2 is a front perspective view of the display device of FIG. 1. FIG. 図２の表示装置の背面斜視図である。3 is a rear perspective view of the display device of FIG. 2. FIG. 図２の表示装置の正面図である。3 is a front view of the display device of FIG. 2. FIG. 図２の表示装置の内部構造の一部を示す背面図である。3 is a rear view showing a part of the internal structure of the display device of FIG. 2. FIG. 図３の表示装置のＡ－Ａ線矢視断面図である。4 is a cross-sectional view taken along line AA of the display device in FIG. 3. FIG. 図２の表示装置の内部構造の一部を示す正面斜視図である。3 is a front perspective view showing a part of the internal structure of the display device of FIG. 2. FIG. 図２の表示装置が備えるフロントスピーカユニットから出力される音波の進行方向を示す模式図である。3 is a schematic diagram showing the traveling direction of sound waves output from a front speaker unit included in the display device of FIG. 2. FIG. 図２の表示装置が備えるリアスピーカボックスの概略構成を示す平面図である。3 is a plan view showing a schematic configuration of a rear speaker box included in the display device of FIG. 2. FIG. 図９のリアスピーカボックスの分解斜視図である。10 is an exploded perspective view of the rear speaker box of FIG. 9. FIG. 図９のリアスピーカボックスが備える保持部材の概略構成を示す斜視図である。10 is a perspective view showing a schematic configuration of a holding member included in the rear speaker box of FIG. 9. FIG. 図９のリアスピーカボックスのＢ－Ｂ線矢視断面図である。10 is a sectional view taken along the line BB of the rear speaker box in FIG. 9. FIG. 図９のリアスピーカボックスのＣ－Ｃ線矢視断面図である。10 is a sectional view taken along the line CC of the rear speaker box in FIG. 9. FIG. 図９の表示装置のＥ－Ｅ線矢視概略断面図である。10 is a schematic cross-sectional view taken along line EE of the display device in FIG. 9. FIG. 図９のリアスピーカボックスのＦ矢視図である。10 is a view taken along arrow F of the rear speaker box in FIG. 9. FIG. 図９のリアスピーカボックスのＧ矢視図である。10 is a view of the rear speaker box shown in FIG. 9 in the direction of arrow G. FIG.
　以下、図面を参照しながら、本発明に係る表示装置の実施の形態について説明する。本発明に係る表示装置（以下「本装置」という。）は、テレビジョン装置（以下「テレビ」という。）やＰＣ（Personal Computer）等の総称である。以下の説明は、本装置がテレビである場合を例に説明される。 Hereinafter, embodiments of a display device according to the present invention will be described with reference to the drawings. The display device according to the present invention (hereinafter referred to as "this device") is a general term for a television device (hereinafter referred to as "television"), a PC (Personal Computer), and the like. The following description will be made using a case where the present device is a television as an example.
　以下の説明において、特に断りがない限り、各図に示される相互に直交する３軸をそれぞれＸ軸、Ｙ軸およびＺ軸としたとき、「Ｘ軸方向」は、Ｘ軸に沿う方向であり、本実施の形態では本装置における左右方向（例えば、図４における紙面左右方向）である。「Ｙ軸方向」は、Ｙ軸に沿う方向であり、本実施の形態では本装置における上下方向（例えば、図４における紙面上下方向）である。「Ｚ軸方向」は、Ｚ軸に沿う方向であり、本実施の形態では本装置における前後方向（正面－背面方向、例えば、図４における紙面手前奥方向）である。「＋Ｘ軸方向」は、Ｘ軸方向の正の方向であり、本実施の形態では右方である。「－Ｘ軸方向」は、Ｘ軸方向の負の方向であり、本実施の形態では左方である。「＋Ｙ軸方向」は、Ｙ軸方向の正の方向であり、本実施の形態では上方である。「－Ｙ軸方向」は、Ｙ軸方向の負の方向であり、本実施の形態では下方である。「＋Ｚ軸方向」は、Ｚ軸方向の正の方向であり、本実施の形態では前方（正面方向）である。「－Ｚ軸方向」は、Ｚ軸方向の負の方向であり、本実施の形態では後方（背面方向）である。 In the following description, unless otherwise specified, the "X-axis direction" means the direction along the X-axis when the three mutually orthogonal axes shown in each figure are the X-axis, Y-axis, and Z-axis, respectively. , in this embodiment, is the left-right direction in the present apparatus (for example, the left-right direction in the paper plane in FIG. 4). The "Y-axis direction" is a direction along the Y-axis, and in this embodiment, is the vertical direction in the present apparatus (for example, the vertical direction in the paper plane in FIG. 4). The "Z-axis direction" is a direction along the Z-axis, and in this embodiment, it is the front-rear direction (front-back direction, for example, the front-rear direction of the paper in FIG. 4) of the present apparatus. The "+X-axis direction" is the positive direction of the X-axis direction, and in this embodiment is the right direction. The "-X-axis direction" is the negative direction of the X-axis direction, and in this embodiment is the left direction. The "+Y-axis direction" is the positive direction of the Y-axis direction, and in this embodiment is upward. The "-Y-axis direction" is the negative direction of the Y-axis direction, and in this embodiment is downward. "+Z-axis direction" is the positive direction of the Z-axis direction, and in this embodiment, is the front (front direction). The "-Z-axis direction" is the negative direction of the Z-axis direction, and in this embodiment, is the rear direction (back direction).
●表示装置●
●表示装置の構成
　図１は、本装置の実施の形態を示すブロック図である。
　図２は、本装置の正面斜視図である。
　図３は、本装置の背面斜視図である。 ●Display device●
●Configuration of display device FIG. 1 is a block diagram showing an embodiment of this device.
FIG. 2 is a front perspective view of the device.
FIG. 3 is a rear perspective view of the device.
　本装置１は、テレビジョン放送を受信して、画像や映像を表示すると共に、画像や映像に応じた音波（音声）を出力する。本装置１は、表示部Ｄと、受信部ＲＥと、信号処理部Ｐと、フロントスピーカユニット１０と、リアスピーカユニット２０と、サブウーファユニット３０と、表示部ケース４０（図５参照）と、角度調節機構５０（図５参照）と、筐体６０と、スタンド７０と、ヒンジ部８０（図７参照）と、を有してなる。 This device 1 receives television broadcasting, displays images and videos, and outputs sound waves (sounds) corresponding to the images and videos. This device 1 includes a display section D, a reception section RE, a signal processing section P, a front speaker unit 10, a rear speaker unit 20, a subwoofer unit 30, a display case 40 (see FIG. 5), and an angle It includes an adjustment mechanism 50 (see FIG. 5), a housing 60, a stand 70, and a hinge portion 80 (see FIG. 7).
　表示部Ｄは、後述される映像データに基づく画像や映像が表示される。表示部Ｄは、画像や映像が表示される表示面Ｓを備える。表示部Ｄは、例えば、有機ＥＬ（Electro Luminescence）ディスプレイである。表示部Ｄは、左右方向に延びる長辺と、上下方向に延びる短辺と、で構成される矩形である。左右方向は、本発明における「側方向」の例である。表示部Ｄの大きさは、例えば、６５インチである。表示部Ｄは、通常使用される状態で本装置１が配置されたとき、前方に表示面Ｓが向くように配置される。表示部Ｄは、本発明における「ディスプレイ」の例である。 The display section D displays images and videos based on video data to be described later. The display section D includes a display surface S on which images and videos are displayed. The display section D is, for example, an organic EL (Electro Luminescence) display. The display portion D is a rectangle configured with long sides extending in the left-right direction and short sides extending in the up-down direction. The left-right direction is an example of the "lateral direction" in the present invention. The size of the display section D is, for example, 65 inches. The display section D is arranged so that the display surface S faces forward when the device 1 is arranged in a normally used state. Display section D is an example of a "display" in the present invention.
　なお、本発明において、表示部は、液晶ディスプレイ、その他の薄型ディスプレイでもよい。 Note that in the present invention, the display section may be a liquid crystal display or other thin display.
　また、本発明において、表示部の大きさは、６５インチサイズに限定されない。すなわち、例えば、表示部の大きさは、５５インチサイズでもよい。 Furthermore, in the present invention, the size of the display section is not limited to 65 inches. That is, for example, the size of the display section may be 55 inches.
　受信部ＲＥは、アンテナ（不図示）を介して、外部からテレビジョン放送を受信し、受信されたテレビジョン放送に基づく放送信号を出力する。受信部ＲＥは、受信回路（不図示）を備える。受信部ＲＥは、受信回路が実装される回路基板を含む。 The receiving unit RE receives television broadcasting from the outside via an antenna (not shown), and outputs a broadcast signal based on the received television broadcasting. The receiving unit RE includes a receiving circuit (not shown). The receiving section RE includes a circuit board on which a receiving circuit is mounted.
　信号処理部Ｐは、受信部ＲＥが受信した放送信号に所定の信号処理を施すことによって、映像データと音声データとを生成する。信号処理部Ｐは、信号処理回路（不図示）を備える。信号処理部Ｐは、信号処理回路が実装される回路基板を含む。 The signal processing unit P generates video data and audio data by performing predetermined signal processing on the broadcast signal received by the receiving unit RE. The signal processing section P includes a signal processing circuit (not shown). The signal processing section P includes a circuit board on which a signal processing circuit is mounted.
　図４は、本装置の正面図である。 FIG. 4 is a front view of this device.
　フロントスピーカユニット１０は、音声データに基づく音声信号を音波に変換して出力する。フロントスピーカユニット１０から出力される音波（以下「フロント音波」という。）は、例えば、中音域～高音域の周波数帯域の音波である。フロントスピーカユニット１０は、表示面Ｓ（表示部Ｄ）の側方(右方、左方)に配置される。フロントスピーカユニット１０は、筐体６０に収容される。フロントスピーカユニット１０は、一対の上スピーカ１１と、一対の下スピーカ１２と、を備える。フロントスピーカユニット１０の具体的構成は、後述される。 The front speaker unit 10 converts an audio signal based on audio data into a sound wave and outputs it. The sound waves output from the front speaker unit 10 (hereinafter referred to as "front sound waves") are, for example, sound waves in the frequency range of medium to treble ranges. The front speaker unit 10 is arranged on the sides (right side, left side) of the display surface S (display section D). The front speaker unit 10 is housed in a housing 60. The front speaker unit 10 includes a pair of upper speakers 11 and a pair of lower speakers 12. The specific configuration of the front speaker unit 10 will be described later.
　図５は、本装置１の内部構造の一部を示す背面図である。
　同図では、説明の便宜上、筐体６０の一部（後述される後枠体６４）の図示が省略される。 FIG. 5 is a rear view showing a part of the internal structure of the device 1. As shown in FIG.
In the figure, for convenience of explanation, illustration of a part of the housing 60 (a rear frame body 64 to be described later) is omitted.
　リアスピーカユニット２０は、音声データに基づく音声信号を音波に変換して出力する。リアスピーカユニット２０から出力される音波（以下「リア音波」という。）は、例えば、低音域～中音域の周波数帯域の音波である。この場合、リア音波は、フロント音波よりも低音域の周波数帯域を含む。リアスピーカユニット２０は、表示面Ｓ（図４参照）の後方（表示部ケース４０の後部）に配置される。リアスピーカユニット２０は、一対のリアスピーカボックス２１（右スピーカボックス２１Ｒ，左スピーカボックス２１Ｌ）を備える。リアスピーカユニット２０の具体的構成は、後述される。 The rear speaker unit 20 converts an audio signal based on audio data into a sound wave and outputs it. The sound waves output from the rear speaker unit 20 (hereinafter referred to as "rear sound waves") are, for example, sound waves in the frequency range of low to medium ranges. In this case, the rear sound waves include a lower frequency band than the front sound waves. The rear speaker unit 20 is arranged behind the display surface S (see FIG. 4) (at the rear of the display case 40). The rear speaker unit 20 includes a pair of rear speaker boxes 21 (a right speaker box 21R, a left speaker box 21L). The specific configuration of the rear speaker unit 20 will be described later.
　サブウーファユニット３０は、音声データに基づく音声信号を音波に変換して出力する。サブウーファユニット３０から出力される音波（以下「サブ音波」という。）は、例えば、低音域の周波数帯域の音波である。すなわち、サブ音波は、フロント音波や、リア音波と異なり、指向性が低い低音域の周波数帯域を含む音波である。サブウーファユニット３０は、表示面Ｓの後方（表示部ケース４０の後部）に配置される。サブウーファユニット３０の具体的構成は、後述される。 The subwoofer unit 30 converts an audio signal based on audio data into a sound wave and outputs it. The sound waves output from the subwoofer unit 30 (hereinafter referred to as "sub sound waves") are, for example, sound waves in a bass frequency band. That is, unlike front sound waves and rear sound waves, sub-sound waves are sound waves that have low directivity and include a low frequency band. The subwoofer unit 30 is arranged behind the display surface S (at the rear of the display case 40). The specific configuration of the subwoofer unit 30 will be described later.
　なお、フロントスピーカユニットとリアスピーカユニットとサブウーファユニットそれぞれは、フィルタを介して信号処理部と接続されてもよい。フィルタは、例えば、カットオフ周波数以上の周波数の信号を通過させ、カットオフ周波数未満の周波数の信号を遮断するハイパスフィルタである。 Note that each of the front speaker unit, rear speaker unit, and subwoofer unit may be connected to the signal processing section via a filter. The filter is, for example, a high-pass filter that passes signals with frequencies higher than the cutoff frequency and blocks signals with frequencies lower than the cutoff frequency.
　表示部ケース４０は、表示部Ｄ（図４参照）を背面側から支持する支持部材である。表示部ケース４０は、表示部Ｄの後方に配置される。表示部ケース４０の大きさは、上下・左右方向において、表示部Ｄの大きさよりも大きい。表示部ケース４０の形状は、表示部Ｄの形状に対応する略矩形のケースである。表示部ケース４０は、本発明における「ディスプレイケース」の例である。 The display unit case 40 is a support member that supports the display unit D (see FIG. 4) from the back side. The display case 40 is arranged behind the display D. The size of the display unit case 40 is larger than the size of the display unit D in the vertical and horizontal directions. The shape of the display part case 40 is a substantially rectangular case corresponding to the shape of the display part D. The display case 40 is an example of a "display case" in the present invention.
　図６は、図３のＡ－Ａ線矢視断面図である。
　角度調節機構５０に関する以下の説明は、図５も適宜参照される。 FIG. 6 is a sectional view taken along the line AA in FIG. 3.
The following description regarding the angle adjustment mechanism 50 also refers to FIG. 5 as appropriate.
　角度調節機構５０は、表示部Ｄの上下方向に対するチルト角を調節する。すなわち、表示部Ｄは、角度調節機構５０により、表示面Ｓが上下方向に傾くように調節可能である。角度調節機構５０は、表示部ケース４０の後方に配置される。角度調節機構５０は、ロッド５１と、シリンダチューブ５２と、モータ５３と、プレート部材５４と、リンク部材５５と、を備える。 The angle adjustment mechanism 50 adjusts the tilt angle of the display section D in the vertical direction. That is, the display section D can be adjusted by the angle adjustment mechanism 50 so that the display surface S is tilted in the vertical direction. The angle adjustment mechanism 50 is arranged at the rear of the display case 40. The angle adjustment mechanism 50 includes a rod 51, a cylinder tube 52, a motor 53, a plate member 54, and a link member 55.
　ロッド５１は、シリンダチューブ５２内をモータ５３の駆動により進退（伸縮）する。ロッド５１は、一端側の一部をシリンダチューブ５２から突出させた状態でシリンダチューブ内に収容される。ロッド５１は、いわゆるピストンロッドである。ロッド５１の一端側端部（上方側の端部）は、プレート部材５４を介して表示部ケース４０に連結される。 The rod 51 moves back and forth (expands and contracts) inside the cylinder tube 52 by driving the motor 53. The rod 51 is housed in the cylinder tube 52 with a portion of one end protruding from the cylinder tube 52 . The rod 51 is a so-called piston rod. One end (upper end) of the rod 51 is connected to the display case 40 via a plate member 54 .
　シリンダチューブ５２は、ロッド５１を進退可能に収容する。シリンダチューブ５２は、一端側（先端側）が開放され、基端側（下方側）が閉塞された、ロッド５１を収容可能な筒状部材である。シリンダチューブ５２の基端側端部は、リンク部材５５に連結される。 The cylinder tube 52 accommodates the rod 51 so that it can move forward and backward. The cylinder tube 52 is a cylindrical member that is open at one end (distal end) and closed at the proximal end (lower side) and is capable of accommodating the rod 51 . A proximal end of the cylinder tube 52 is connected to a link member 55 .
　モータ５３は、ロッド５１を進退させる駆動源である。モータ５３は、シリンダチューブ５２に連結される。 The motor 53 is a drive source that moves the rod 51 forward and backward. Motor 53 is connected to cylinder tube 52 .
　ロッド５１と、シリンダチューブ５２と、モータ５３とは、いわゆる電動シリンダ―を構成する。 The rod 51, cylinder tube 52, and motor 53 constitute a so-called electric cylinder.
　プレート部材５４は、ロッド５１を支持すると共に、表示部ケース４０に連結させる。プレート部材５４は、表示部ケース４０の後面に取り付けられる。 The plate member 54 supports the rod 51 and connects it to the display case 40. The plate member 54 is attached to the rear surface of the display case 40.
　リンク部材５５は、シリンダチューブ５２とスタンド７０とに回動可能に連結されて、表示部Ｄのチルト角の変化（変更）に応じて、シリンダチューブ５２とスタンド７０との間の連結角度が変化する。 The link member 55 is rotatably connected to the cylinder tube 52 and the stand 70, and the connection angle between the cylinder tube 52 and the stand 70 changes according to a change (change) in the tilt angle of the display section D. do.
　このように、角度調節機構５０は、ロッド５１がシリンダチューブ５２から進出（伸長）したときと、ロッド５１がシリンダチューブ５２に退避（縮小）したときとにおいて、表示部ケース４０に対する押引力により、表示部Ｄの上下方向に対するチルト角を調節可能にする。すなわち、角度調節機構５０は、ロッド５１の進退（伸縮）により生じる表示部ケース４０に対する押引力で、表示部Ｄの上下方向に対するチルト角を調節（変更）する。このため、本装置１の画像や映像を視認する者（以下「聴視者」という。）Ｈｍ（図８参照）は、所定の範囲内においてチルト角を調節して視認可能である。 In this way, the angle adjustment mechanism 50 uses the pushing and pulling force on the display case 40 when the rod 51 advances (extends) from the cylinder tube 52 and when the rod 51 retreats (shrinks) into the cylinder tube 52. The tilt angle of the display section D in the vertical direction can be adjusted. That is, the angle adjustment mechanism 50 adjusts (changes) the tilt angle of the display section D in the vertical direction using the pushing and pulling force on the display section case 40 caused by the forward and backward movement (extension and contraction) of the rod 51. Therefore, a person (hereinafter referred to as a "viewer") Hm (see FIG. 8) who visually recognizes the images and videos of the present device 1 can adjust the tilt angle within a predetermined range to view the images and videos.
　図２－４に戻る。
　筐体６０は、表示部Ｄと、受信部ＲＥと、信号処理部Ｐと、フロントスピーカユニット１０と、リアスピーカユニット２０と、サブウーファユニット３０と、表示部ケース４０と、角度調節機構５０と、ヒンジ部８０と、を収容する。筐体６０は、表示部Ｄと、受信部ＲＥと、信号処理部Ｐと、フロントスピーカユニット１０と、リアスピーカユニット２０と、サブウーファユニット３０と、表示部ケース４０と、角度調節機構５０と、ヒンジ部８０と、を外部からの物理的な衝撃などから保護する。表示部Ｄは、表示面Ｓを除き、筐体６０に収容される。すなわち、表示面Ｓは、聴視者Ｈｍに聴視可能な状態で筐体６０に収容される。 Return to Figure 2-4.
The housing 60 includes a display section D, a reception section RE, a signal processing section P, a front speaker unit 10, a rear speaker unit 20, a subwoofer unit 30, a display section case 40, an angle adjustment mechanism 50, The hinge part 80 is accommodated. The housing 60 includes a display section D, a reception section RE, a signal processing section P, a front speaker unit 10, a rear speaker unit 20, a subwoofer unit 30, a display section case 40, an angle adjustment mechanism 50, The hinge portion 80 is protected from external physical impact. The display section D, excluding the display surface S, is housed in the housing 60. That is, the display surface S is housed in the housing 60 in a state where it can be viewed by the viewer Hm.
　筐体６０は、上枠体６１と、下枠体６２と、側枠体６３（右側枠体６３Ｒ，左側枠体６３Ｌ）と、後枠体６４と、フロント音波出力孔６５ｈと、リア音波出力孔６６ｈと、音響調整孔６７ｈと、を備える。筐体６０は、上枠体６１と、下枠体６２と、側枠体６３と、後枠体６４とが結合されて構成される。 The housing 60 includes an upper frame 61, a lower frame 62, a side frame 63 (right side frame 63R, left side frame 63L), a rear frame 64, a front sound wave output hole 65h, and a rear sound wave output hole. It includes a hole 66h and an acoustic adjustment hole 67h. The housing 60 is configured by combining an upper frame 61, a lower frame 62, a side frame 63, and a rear frame 64.
　上枠体６１は、表示部Ｄの上方に配置されて、表示部Ｄを、上方からの物理的な衝撃などから保護する。上枠体６１は、左右方向に延びて、側枠体６３に連結される。上枠体６１は、上板部６１ａと第１前板部６１ｂとを備える。上板部６１ａは、表示部Ｄを上方より保護する。上枠体６１には、リア音波出力孔６６ｈの一部（後述される右上方音波出力孔６６Ｒｈ２，左上方音波出力孔６６Ｌｈ２）が配置される。第１前板部６１ｂは、上板部６１ａの前端部から表示部Ｄの上部にかけて配置される、表示面Ｓに対して傾斜する板部である。 The upper frame body 61 is placed above the display section D to protect the display section D from physical impact from above. The upper frame body 61 extends in the left-right direction and is connected to the side frame bodies 63. The upper frame body 61 includes an upper plate portion 61a and a first front plate portion 61b. The upper plate portion 61a protects the display portion D from above. A part of the rear sound wave output hole 66h (an upper right sound wave output hole 66Rh2 and an upper left sound wave output hole 66Lh2, which will be described later) is arranged in the upper frame 61. The first front plate part 61b is a plate part that is arranged from the front end of the upper plate part 61a to the upper part of the display part D and is inclined with respect to the display surface S.
　下枠体６２は、表示部Ｄの下方に配置されて、表示部Ｄを、下方からの物理的な衝撃などから保護する。下枠体６２は、左右方向に延びて、側枠体６３に連結される。下枠体６２は、下板部６２ａと第２前板部６２ｂとを備える。下板部６２ａは、表示部Ｄを下方より保護する。下枠体６２は、スタンド７０の一部が係合する切欠（不図示）を備える。第２前板部６２ｂは、下板部６２ａの前端部から表示部Ｄの下部にかけて配置される、表示面Ｓに対して傾斜する板部である。 The lower frame body 62 is arranged below the display section D to protect the display section D from physical impact from below. The lower frame body 62 extends in the left-right direction and is connected to the side frame bodies 63. The lower frame body 62 includes a lower plate portion 62a and a second front plate portion 62b. The lower plate portion 62a protects the display portion D from below. The lower frame body 62 includes a notch (not shown) with which a portion of the stand 70 engages. The second front plate part 62b is a plate part that is arranged from the front end of the lower plate part 62a to the lower part of the display part D and is inclined with respect to the display surface S.
　側枠体６３は、表示部Ｄの側方に配置されて、表示部Ｄを、側方からの物理的な衝撃などから保護する。側枠体６３は、上下方向に延びる。側枠体６３の上端は、上枠体６１に連結される。側枠体６３の下端は、下枠体６２に連結される。 The side frame body 63 is arranged on the side of the display section D to protect the display section D from physical impact from the side. The side frame body 63 extends in the vertical direction. The upper end of the side frame body 63 is connected to the upper frame body 61. The lower end of the side frame body 63 is connected to the lower frame body 62.
　右側枠体６３Ｒは、表示部Ｄの右方に配置されて、表示部Ｄを、右方からの物理的な衝撃などから保護する。右側枠体６３Ｒは、右板部６３Ｒａと第３前板部６３Ｒｂとを備える。右側枠体６３Ｒには、フロントスピーカユニット１０の一部が収容される。右板部６３Ｒａは、表示部Ｄを右方より保護する。右側枠体６３Ｒには、リア音波出力孔６６ｈの一部（後述される右側方音波出力孔６６Ｒｈ１）が配置される。第３前板部６３Ｒｂは、右板部６３Ｒａの前端部から表示部Ｄの側部（右部）にかけて配置される、表示面Ｓに対して傾斜する板部である。第３前板部６３Ｒｂには、フロント音波出力孔６５ｈの一部（後述される右上音波出力孔６５ｈ１，右下音波出力孔６５ｈ３）が配置される。 The right side frame 63R is placed on the right side of the display section D to protect the display section D from physical impact from the right side. The right side frame 63R includes a right plate portion 63Ra and a third front plate portion 63Rb. A part of the front speaker unit 10 is housed in the right side frame 63R. The right plate portion 63Ra protects the display portion D from the right side. A part of the rear sound wave output hole 66h (a right side sound wave output hole 66Rh1 to be described later) is arranged in the right side frame 63R. The third front plate part 63Rb is a plate part that is arranged from the front end of the right plate part 63Ra to the side (right part) of the display part D and is inclined with respect to the display surface S. A part of the front sound wave output hole 65h (an upper right sound wave output hole 65h1 and a lower right sound wave output hole 65h3, which will be described later) are arranged in the third front plate portion 63Rb.
　左側枠体６３Ｌは、表示部Ｄの左方に配置されて、表示部Ｄを、左方からの物理的な衝撃などから保護する。左側枠体６３Ｌは、左板部６３Ｌａと第４前板部６３Ｌｂとを備える。左側枠体６３Ｌには、フロントスピーカユニット１０の一部が収容される。左板部６３Ｌａは、表示部Ｄを左方より保護する。左側枠体６３Ｌには、リア音波出力孔６６ｈの一部（後述される左側方音波出力孔６６Ｌｈ１）が配置される。第４前板部６３Ｌｂは、左板部６３Ｌａの前端部から表示部Ｄの側部（左部）にかけて配置される、表示面Ｓに対して傾斜する板部である。第４前板部６３Ｌｂには、フロント音波出力孔６５ｈの一部（後述される左上音波出力孔６５ｈ２，左下音波出力孔６５ｈ４）が配置される。 The left side frame 63L is arranged on the left side of the display section D to protect the display section D from physical impact from the left side. The left side frame 63L includes a left plate portion 63La and a fourth front plate portion 63Lb. A part of the front speaker unit 10 is housed in the left frame 63L. The left plate portion 63La protects the display portion D from the left side. A part of the rear sound wave output hole 66h (left side sound wave output hole 66Lh1 to be described later) is arranged in the left side frame 63L. The fourth front plate part 63Lb is a plate part that is arranged from the front end of the left plate part 63La to the side (left part) of the display part D and is inclined with respect to the display surface S. A part of the front sound wave output hole 65h (upper left sound wave output hole 65h2 and lower left sound wave output hole 65h4, which will be described later) is arranged in the fourth front plate portion 63Lb.
　後枠体６４は、表示部Ｄ（表示部ケース４０）の後方に配置されて、表示部Ｄを、後方からの物理的な衝撃などから保護する。後枠体６４の上部は、上板部６１ａ（上枠体６１）の後端部と連結される。後枠体６４の下部は、下板部６２ａ（下枠体６２）の後端部と連結される。後枠体６４の右部は、右板部６３Ｒａ（右側枠体６３Ｒ）と連結される。後枠体６４の左部は、左板部６３Ｌａ（左側枠体６３Ｌ）と連結される。表示部Ｄ（表示部ケース４０）と、後枠体６４と、右側枠体６３Ｒと、左側枠体６３Ｌと、で構成される空間内に、リアスピーカユニット２０と、サブウーファユニット３０と、角度調節機構５０と、が収容される。後枠体６４には、音響調整孔６７ｈが配置される。 The rear frame body 64 is arranged at the rear of the display section D (display section case 40) and protects the display section D from physical impact from behind. The upper portion of the rear frame body 64 is connected to the rear end portion of the upper plate portion 61a (upper frame body 61). A lower portion of the rear frame body 64 is connected to a rear end portion of the lower plate portion 62a (lower frame body 62). The right portion of the rear frame body 64 is connected to the right plate portion 63Ra (right side frame body 63R). The left portion of the rear frame body 64 is connected to the left plate portion 63La (left side frame body 63L). A rear speaker unit 20, a subwoofer unit 30, and an angle adjustment device are installed in a space constituted by the display section D (display section case 40), the rear frame 64, the right frame 63R, and the left frame 63L. A mechanism 50 is housed. A sound adjustment hole 67h is arranged in the rear frame body 64.
　フロント音波出力孔６５ｈは、フロント音波を、側枠体６３（筐体６０）から表示面Ｓの前方に放音する。フロント音波出力孔６５ｈは、側枠体６３において前方（前後方向）に貫通する開口である。フロント音波出力孔６５ｈは、４つの音波出力孔（右上音波出力孔６５ｈ１，左上音波出力孔６５ｈ２，右下音波出力孔６５ｈ３，左下音波出力孔６５ｈ４）を備える。４つの音波出力孔６５ｈ１－６５ｈ４のうち、右上音波出力孔６５ｈ１と右下音波出力孔６５ｈ３とは、第３前板部６３Ｒｂ（右側枠体６３Ｒ）に配置される。４つの音波出力孔６５ｈ１－６５ｈ４のうち、左上音波出力孔６５ｈ２と左下音波出力孔６５ｈ４とは、第４前板部６３Ｌｂ（左側枠体６３Ｌ）に配置される。 The front sound wave output hole 65h emits front sound waves from the side frame 63 (casing 60) to the front of the display surface S. The front sound wave output hole 65h is an opening that penetrates the side frame body 63 in the front direction (front-rear direction). The front sound wave output hole 65h includes four sound wave output holes (upper right sound wave output hole 65h1, upper left sound wave output hole 65h2, lower right sound wave output hole 65h3, and lower left sound wave output hole 65h4). Among the four sound wave output holes 65h1 to 65h4, the upper right sound wave output hole 65h1 and the lower right sound wave output hole 65h3 are arranged in the third front plate portion 63Rb (right side frame 63R). Among the four sound wave output holes 65h1 to 65h4, the upper left sound wave output hole 65h2 and the lower left sound wave output hole 65h4 are arranged in the fourth front plate portion 63Lb (left side frame 63L).
　右上音波出力孔６５ｈ１と左上音波出力孔６５ｈ２とは、一対の上スピーカ１１に対応して配置される。右上音波出力孔６５ｈ１と左上音波出力孔６５ｈ２とは、本装置１の上下方向における中心よりも上方に配置される。右下音波出力孔６５ｈ３と左下音波出力孔６５ｈ４とは、一対の下スピーカ１２に対応して配置される。右下音波出力孔６５ｈ３と左下音波出力孔６５ｈ４とは、同中心よりも下方に配置される。 The upper right sound wave output hole 65h1 and the upper left sound wave output hole 65h2 are arranged corresponding to the pair of upper speakers 11. The upper right sound wave output hole 65h1 and the upper left sound wave output hole 65h2 are arranged above the center of the device 1 in the vertical direction. The lower right sound wave output hole 65h3 and the lower left sound wave output hole 65h4 are arranged corresponding to the pair of lower speakers 12. The lower right sound wave output hole 65h3 and the lower left sound wave output hole 65h4 are arranged below the same center.
　前述のとおり、本実施の形態において、表示部Ｄの大きさは、６５インチである。このとき、上下方向において、右上音波出力孔６５ｈ１は、右下音波出力孔６５ｈ３と約５０センチメートルの距離を空けて配置される。同様に、上下方向において、左上音波出力孔６５ｈ２は、左下音波出力孔６５ｈ４と約５０センチメートルの距離を空けて配置される。このように、フロント音波出力孔６５ｈが上下方向において距離を空けて配置されることにより、いわゆる、サラウンド効果は、高まる。 As mentioned above, in this embodiment, the size of the display section D is 65 inches. At this time, the upper right sound wave output hole 65h1 and the lower right sound wave output hole 65h3 are spaced apart from each other by about 50 centimeters in the vertical direction. Similarly, in the vertical direction, the upper left sound wave output hole 65h2 is spaced apart from the lower left sound wave output hole 65h4 by about 50 centimeters. In this way, the so-called surround effect is enhanced by arranging the front sound wave output holes 65h at a distance in the vertical direction.
　リア音波出力孔６６ｈは、後述される音導部（右音導部２５Ｒ，左音導部）（図１１，１２参照）に導かれたリア音波を、筐体６０の外部に放音する。リア音波出力孔６６ｈは、右スピーカボックス２１Ｒに対応する右音波出力孔６６Ｒｈと、左スピーカボックス２１Ｌに対応する左音波出力孔６６Ｌｈと、を備える。右音波出力孔６６Ｒｈの機能や形状・大きさは、左音波出力孔６６Ｌｈの機能や形状・大きさと同じである。右音波出力孔６６Ｒｈと左音波出力孔６６Ｌｈとの相違は、筐体６０における配置位置のみである。そこで、以下のリア音波出力孔６６ｈに関する構成は、右音波出力孔６６Ｒｈを例に説明される。 The rear sound wave output hole 66h emits rear sound waves guided to the sound guide portions (right sound guide portion 25R, left sound guide portion) (see FIGS. 11 and 12), which will be described later, to the outside of the housing 60. The rear sound wave output hole 66h includes a right sound wave output hole 66Rh corresponding to the right speaker box 21R, and a left sound wave output hole 66Lh corresponding to the left speaker box 21L. The function, shape, and size of the right sound wave output hole 66Rh are the same as the function, shape, and size of the left sound wave output hole 66Lh. The only difference between the right sound wave output hole 66Rh and the left sound wave output hole 66Lh is the arrangement position in the housing 60. Therefore, the following configuration regarding the rear sound wave output hole 66h will be explained using the right sound wave output hole 66Rh as an example.
　右音波出力孔６６Ｒｈは、右側方音波出力孔６６Ｒｈ１と右上方音波出力孔６６Ｒｈ２とを備える。 The right sound wave output hole 66Rh includes a right side sound wave output hole 66Rh1 and an upper right sound wave output hole 66Rh2.
　右側方音波出力孔６６Ｒｈ１は、後述される右側方音導部２５Ｒ１（音導部）（図１３参照）と連通する。右側方音波出力孔６６Ｒｈ１は、右板部６３Ｒａ（右側枠体６３Ｒ）に配置される。右側方音波出力孔６６Ｒｈ１は、右板部６３Ｒａ（右側枠体６３Ｒ）において、右方（側方（側方向））に貫通する開口である。 The right side sound wave output hole 66Rh1 communicates with a right side sound guide section 25R1 (sound guide section) (see FIG. 13), which will be described later. The right side sound wave output hole 66Rh1 is arranged in the right plate portion 63Ra (right side frame 63R). The right side sound wave output hole 66Rh1 is an opening that penetrates rightward (laterally) in the right plate portion 63Ra (right side frame 63R).
　右上方音波出力孔６６Ｒｈ２は、後述される右上方音導部２５Ｒ２（音導部）と連通する。右上方音波出力孔６６Ｒｈ２は、上板部６１ａ（上枠体６１）に配置される。右上方音波出力孔６６Ｒｈ２は、上板部６１ａ（上枠体６１）において、上方（上下方向）に貫通する開口である。 The upper right sound wave output hole 66Rh2 communicates with the upper right sound guide section 25R2 (sound guide section), which will be described later. The upper right sound wave output hole 66Rh2 is arranged in the upper plate portion 61a (upper frame body 61). The upper right sound wave output hole 66Rh2 is an opening that penetrates upward (in the vertical direction) in the upper plate portion 61a (upper frame body 61).
　前述のとおり、右音波出力孔６６Ｒｈの機能や形状・大きさは、左音波出力孔６６Ｌｈの機能や形状・大きさと同じである。すなわち、左音波出力孔６６Ｌｈは、左側方音波出力孔６６Ｌｈ１と左上方音波出力孔６６Ｌｈ２とを備える。 As described above, the function, shape, and size of the right sound wave output hole 66Rh are the same as those of the left sound wave output hole 66Lh. That is, the left sound wave output hole 66Lh includes a left side sound wave output hole 66Lh1 and an upper left sound wave output hole 66Lh2.
　右側方音波出力孔６６Ｒｈ１と左側方音波出力孔６６Ｌｈ１それぞれは、本発明における「側方音波出力孔」の例である。右上方音波出力孔６６Ｒｈ２と左上方音波出力孔６６Ｌｈ２それぞれは、本発明における「上方音波出力孔」の例である。 Each of the right side sound wave output hole 66Rh1 and the left side sound wave output hole 66Lh1 is an example of a "side sound wave output hole" in the present invention. The upper right sound wave output hole 66Rh2 and the upper left sound wave output hole 66Lh2 are examples of "upper sound wave output holes" in the present invention.
　音響調整孔６７ｈは、リア音波出力孔６６ｈから放音されるリア音波の音響を調整する。音響調整孔６７ｈは、後述される右スピーカ２２Ｒ（図９参照）が振動するための音導部（右側方音導部２５Ｒ１，右上方音導部２５Ｒ２）内の空気圧を調整する。音響調整孔６７ｈは、右スピーカボックス２１Ｒに対応する右音響調整孔６７Ｒｈと、左スピーカボックス２１Ｌに対応する左音響調整孔６７Ｌｈと、を備える。右音響調整孔６７Ｒｈの機能や形状・大きさは、左音響調整孔６７Ｌｈの機能や形状・大きさと同じである。右音響調整孔６７Ｒｈと左音響調整孔６７Ｌｈとの相違は、後枠体６４（筐体６０）における配置位置のみである。そこで、以下の音響調整孔６７ｈに関する構成は、右音響調整孔６７Ｒｈを例に説明される。 The sound adjustment hole 67h adjusts the sound of the rear sound wave emitted from the rear sound wave output hole 66h. The sound adjustment hole 67h adjusts the air pressure within the sound guide section (the right side sound guide section 25R1, the upper right sound guide section 25R2) for the vibration of the right speaker 22R (see FIG. 9), which will be described later. The sound adjustment hole 67h includes a right sound adjustment hole 67Rh corresponding to the right speaker box 21R, and a left sound adjustment hole 67Lh corresponding to the left speaker box 21L. The function, shape, and size of the right sound adjustment hole 67Rh are the same as those of the left sound adjustment hole 67Lh. The only difference between the right sound adjustment hole 67Rh and the left sound adjustment hole 67Lh is the arrangement position in the rear frame 64 (casing 60). Therefore, the following configuration regarding the sound adjustment hole 67h will be explained using the right sound adjustment hole 67Rh as an example.
　右音響調整孔６７Ｒｈは、第１右音響調整孔６７Ｒｈ１と第２右音響調整孔６７Ｒｈ２とを備える。 The right sound adjustment hole 67Rh includes a first right sound adjustment hole 67Rh1 and a second right sound adjustment hole 67Rh2.
　第１右音響調整孔６７Ｒｈ１は、後述される右側方特性孔２６Ｒｈ１（右音響特性孔２６Ｒｈ）と連通する。第１右音響調整孔６７Ｒｈ１は、後枠体６４に配置される。第１右音響調整孔６７Ｒｈ１は、上下方向に延在する孔である。 The first right acoustic adjustment hole 67Rh1 communicates with a right side characteristic hole 26Rh1 (right acoustic characteristic hole 26Rh), which will be described later. The first right sound adjustment hole 67Rh1 is arranged in the rear frame 64. The first right sound adjustment hole 67Rh1 is a hole extending in the vertical direction.
　第２右音響調整孔６７Ｒｈ２は、後述される右上方特性孔２６Ｒｈ２（右音響特性孔２６Ｒｈ）と連通する。第２右音響調整孔６７Ｒｈ２は、後枠体６４に配置される。第２音響調整孔６７Ｒ２は、左右方向に延在する孔である。 The second right acoustic adjustment hole 67Rh2 communicates with an upper right characteristic hole 26Rh2 (right acoustic characteristic hole 26Rh), which will be described later. The second right sound adjustment hole 67Rh2 is arranged in the rear frame body 64. The second sound adjustment hole 67R2 is a hole extending in the left-right direction.
　第１右音響調整孔６７Ｒｈ１と第２右音響調整孔６７Ｒｈ２それぞれは、後枠体６４において後方（前後方向）に貫通する開口である。 The first right sound adjustment hole 67Rh1 and the second right sound adjustment hole 67Rh2 are openings that penetrate rearward (front-back direction) in the rear frame 64.
　前述のとおり、右音響調整孔６７Ｒｈの機能や形状・大きさは、左音響調整孔６７Ｌｈの機能や形状・大きさと同じである。すなわち、左音響調整孔６７Ｌｈは、第１左音響調整孔６７Ｌｈ１と第２左音響調整孔６７Ｌｈ２とを備える。 As mentioned above, the function, shape, and size of the right sound adjustment hole 67Rh are the same as the function, shape, and size of the left sound adjustment hole 67Lh. That is, the left sound adjustment hole 67Lh includes a first left sound adjustment hole 67Lh1 and a second left sound adjustment hole 67Lh2.
　第１右音響調整孔６７Ｒｈ１と第１左音響調整孔６７Ｌｈ１それぞれは、本発明における「第１音響調整孔」の例である。第２右音響調整孔６７Ｒｈ２と第２左音響調整孔６７Ｌｈ２それぞれは、本発明における「第２音響調整孔」の例である。 Each of the first right sound adjustment hole 67Rh1 and the first left sound adjustment hole 67Lh1 is an example of a "first sound adjustment hole" in the present invention. Each of the second right sound adjustment hole 67Rh2 and the second left sound adjustment hole 67Lh2 is an example of a "second sound adjustment hole" in the present invention.
　図５－６に戻る。
　スタンド７０は、本装置１を床面や台座等の載置面Ｓｕに載置するための台である。 Return to Figure 5-6.
The stand 70 is a stand for placing the device 1 on a mounting surface Su such as a floor or a pedestal.
　図７は、本装置１の内部構造の一部を示す正面斜視図である。
　同図では、説明の便宜上、下枠体６２の図示が省略される。 FIG. 7 is a front perspective view showing a part of the internal structure of the device 1. As shown in FIG.
In the figure, illustration of the lower frame body 62 is omitted for convenience of explanation.
　ヒンジ部８０は、表示部ケース４０の下部に配置されて、表示部ケース４０（図５参照）とスタンド７０とを連結する。ヒンジ部８０は、角度調節機構５０（図５参照）により表示部Ｄのチルト角が調節されたときに、調節された（変化した）表示部Ｄの状態を維持する。 The hinge portion 80 is arranged at the lower part of the display case 40 and connects the display case 40 (see FIG. 5) and the stand 70. The hinge section 80 maintains the adjusted (changed) state of the display section D when the tilt angle of the display section D is adjusted by the angle adjustment mechanism 50 (see FIG. 5).
●フロントスピーカユニットの構成
　図２と図４とに戻る。
　前述のとおり、フロントスピーカユニット１０は、一対の上スピーカ１１と、一対の下スピーカ１２と、を備える。一対の上スピーカ１１は、表示部Ｄの短辺における中心よりも上方に配置される。一対の下スピーカ１２は、表示部Ｄの短辺における中心よりも下方に配置される。 ●Configuration of front speaker unit Return to FIGS. 2 and 4.
As described above, the front speaker unit 10 includes a pair of upper speakers 11 and a pair of lower speakers 12. The pair of upper speakers 11 are arranged above the center of the short side of the display section D. The pair of lower speakers 12 are arranged below the center of the short side of the display section D.
　図８は、フロントスピーカユニット１０から出力されるフロント音波の進行方向を示す模式図である。
　同図は、一対の上スピーカ１１から出力されるフロント音波の進行方向（二点鎖線で示すＬ１）と、一対の下スピーカ１２から出力されるフロント音波の進行方向（二点鎖線で示すＬ２）と、聴視者Ｈｍと、の関係を模式的に示す。また、同図は、表示面Ｓが載置面Ｓｕに対して傾斜するように配置されている様子と、聴視者ＨｍがイスＣｈに着座している状態で聴視している様子と、一対の上スピーカ１１から出力されるフロント音波の進行方向Ｌ１と、一対の下スピーカ１２から出力されるフロント音波の進行方向Ｌ２と、を模式的に示す。さらに、同図では、説明の便宜上、一対の上スピーカ１１と、一対の下スピーカ１２と、の配置角度を示すために、一対の上スピーカ１１と、一対の下スピーカ１２とが、本装置１の外部に配置されている状態を示す。
　以下の説明は、図２と図４とも参照される。 FIG. 8 is a schematic diagram showing the traveling direction of front sound waves output from the front speaker unit 10.
The figure shows the traveling direction of the front sound waves output from the pair of upper speakers 11 (L1 indicated by the two-dot chain line) and the traveling direction of the front sound waves output from the pair of lower speakers 12 (L2 indicated by the two-dot chain line). The relationship between Hm and the viewer Hm is schematically shown. The figure also shows how the display surface S is arranged so as to be inclined with respect to the mounting surface Su, and how the viewer Hm is watching while sitting on a chair Ch. A traveling direction L1 of front sound waves output from a pair of upper speakers 11 and a traveling direction L2 of front sound waves output from a pair of lower speakers 12 are schematically shown. Furthermore, in the figure, for convenience of explanation, to show the arrangement angles of the pair of upper speakers 11 and the pair of lower speakers 12, the pair of upper speakers 11 and the pair of lower speakers 12 are Indicates the state of being placed outside of.
The following description also refers to FIGS. 2 and 4.
　一対の上スピーカ１１それぞれは、フロント音波を出力する。一対の上スピーカ１１は、右上スピーカ１１Ｒと左上スピーカ１１Ｌ（図２では不図示）とを備える。 Each of the pair of upper speakers 11 outputs a front sound wave. The pair of upper speakers 11 includes an upper right speaker 11R and an upper left speaker 11L (not shown in FIG. 2).
　右上スピーカ１１Ｒは、フロント音波のうち、右チャンネル用のフロント音波（音声）を前方に出力（放音）する。右上スピーカ１１Ｒは、表示部Ｄの右側方における表示部ケース４０の上部に、右上スピーカ保持部材（不図示）を介して配置される。右上スピーカ１１Ｒは、音波が出力される面（以下「出力面」という。）を前方（例えば、載置面Ｓｕに対する水平方向の前方）に向けて配置される（取り付けられる）。右上スピーカ１１Ｒから出力されるフロント音波の進行方向Ｌ１は、載置面Ｓｕに対して水平である。 The upper right speaker 11R outputs (emits sound) forward the front sound wave (sound) for the right channel among the front sound waves. The upper right speaker 11R is disposed at the upper part of the display unit case 40 on the right side of the display unit D via an upper right speaker holding member (not shown). The upper right speaker 11R is arranged (attached) with the surface from which sound waves are output (hereinafter referred to as "output surface") facing forward (for example, in front of the mounting surface Su in the horizontal direction). The traveling direction L1 of the front sound wave output from the upper right speaker 11R is horizontal to the mounting surface Su.
　左上スピーカ１１Ｌは、フロント音波のうち、左チャンネル用のフロント音波（音声）を前方に出力（放音）する。左上スピーカ１１Ｌは、表示部Ｄの左側方における表示部ケース４０の上部に、左上スピーカ保持部材（不図示）を介して配置される（取り付けられる）。左上スピーカ１１Ｌは、出力面を前方（例えば、載置面Ｓｕに対する水平方向の前方）に向けて配置される。左上スピーカ１１Ｌから出力されるフロント音波の進行方向Ｌ１は、載置面Ｓｕに対して水平である。すなわち、左上スピーカ１１Ｌから出力されるフロント音波の進行方向Ｌ１は、右上スピーカ１１Ｒから出力されるフロント音波の進行方向Ｌ１と同じである。 The upper left speaker 11L outputs (emits sound) forward the front sound wave (sound) for the left channel among the front sound waves. The upper left speaker 11L is arranged (attached) to the upper part of the display case 40 on the left side of the display D via an upper left speaker holding member (not shown). The upper left speaker 11L is arranged with its output surface facing forward (for example, forward in the horizontal direction with respect to the mounting surface Su). The traveling direction L1 of the front sound wave output from the upper left speaker 11L is horizontal to the mounting surface Su. That is, the traveling direction L1 of the front sound waves output from the upper left speaker 11L is the same as the traveling direction L1 of the front sound waves output from the upper right speaker 11R.
　このように、一対の上スピーカ１１からは、右チャンネル用のフロント音波と、左チャンネル用のフロント音波と、によって、ステレオモードの音波（フロント音波）が前方に出力される。 In this way, stereo mode sound waves (front sound waves) are output forward from the pair of upper speakers 11 by the front sound waves for the right channel and the front sound waves for the left channel.
　一対の下スピーカ１２それぞれは、フロント音波を出力する。一対の下スピーカ１２は、右下スピーカ１２Ｒと左下スピーカ１２Ｌ（図２では不図示）とを備える。 Each of the pair of lower speakers 12 outputs a front sound wave. The pair of lower speakers 12 includes a lower right speaker 12R and a lower left speaker 12L (not shown in FIG. 2).
　右下スピーカ１２Ｒは、フロント音波のうち、右チャンネル用のフロント音波（音声）を前方に出力（放音）する。右下スピーカ１２Ｒは、表示部Ｄの右側方における表示部ケース４０の下部に、右下スピーカ保持部材（不図示）を介して配置される。右下スピーカ１２Ｒは、出力面を前方（例えば、表示面Ｓの面内方向に対して垂直となる前方）に向けて配置される。右下スピーカ１２Ｒから出力されるフロント音波の進行方向Ｌ２は、表示面Ｓの面内方向に対して垂直である。「表示面Ｓの面内方向」は、表示面Ｓに平行な方向である。 The lower right speaker 12R outputs (emits sound) forward the front sound wave (sound) for the right channel among the front sound waves. The lower right speaker 12R is arranged at the lower part of the display unit case 40 on the right side of the display unit D via a lower right speaker holding member (not shown). The lower right speaker 12R is arranged with its output surface facing forward (eg, forward perpendicular to the in-plane direction of the display surface S). The traveling direction L2 of the front sound wave output from the lower right speaker 12R is perpendicular to the in-plane direction of the display surface S. "In-plane direction of display surface S" is a direction parallel to display surface S.
　左下スピーカ１２Ｌは、フロント音波のうち、左チャンネル用のフロント音波（音声）を前方に出力（放音）する。左下スピーカ１２Ｌは、表示部Ｄの左側方における表示部ケース４０の下部に、左下スピーカ保持部材（不図示）を介して配置される。左下スピーカ１２Ｌは、出力面を前方（例えば、表示面Ｓの面内方向に対して垂直となる前方）に向けて配置される。左下スピーカ１２Ｌから出力されるフロント音波の進行方向Ｌ２は、表示面Ｓの面内方向に対して垂直である。すなわち、右下スピーカ１２Ｒから出力されるフロント音波の進行方向Ｌ２と、左下スピーカ１２Ｌから出力されるフロント音波の進行方向Ｌ２とは、同じである。つまり、右上スピーカ１１Ｒから出力されるフロント音波の進行方向Ｌ１と、左上スピーカ１１Ｌから出力されるフロント音波の進行方向Ｌ１とは、右下スピーカ１２Ｒから出力されるフロント音波の進行方向Ｌ２と、左下スピーカ１２Ｌから出力されるフロント音波の進行方向Ｌ２とは、異なる。換言すれば、一対の上スピーカ１１から出力されるフロント音波の進行方向Ｌ１は、一対の下スピーカ１２から出力されるフロント音波の進行方向Ｌ２と異なる。 The lower left speaker 12L outputs (emits sound) forward the front sound wave (sound) for the left channel among the front sound waves. The lower left speaker 12L is arranged at the lower part of the display unit case 40 on the left side of the display unit D via a lower left speaker holding member (not shown). The lower left speaker 12L is arranged with its output surface facing forward (eg, forward perpendicular to the in-plane direction of the display surface S). The traveling direction L2 of the front sound wave output from the lower left speaker 12L is perpendicular to the in-plane direction of the display surface S. That is, the traveling direction L2 of the front sound wave output from the lower right speaker 12R and the traveling direction L2 of the front sound wave output from the lower left speaker 12L are the same. In other words, the traveling direction L1 of the front sound waves output from the upper right speaker 11R and the traveling direction L1 of the front sound waves output from the upper left speaker 11L are the same as the traveling direction L2 of the front sound waves output from the lower right speaker 12R, and the traveling direction L2 of the front sound waves output from the lower right speaker 12R. This is different from the traveling direction L2 of the front sound waves output from the speaker 12L. In other words, the traveling direction L1 of the front sound waves output from the pair of upper speakers 11 is different from the traveling direction L2 of the front sound waves output from the pair of lower speakers 12.
　本実施の形態において、一対の上スピーカ１１から出力されるフロント音波の進行方向Ｌ１と、一対の下スピーカ１２から出力されるフロント音波の進行方向Ｌ２とは、共に聴視者Ｈｍの耳Ｅａに向かう方向である。 In this embodiment, the traveling direction L1 of the front sound waves output from the pair of upper speakers 11 and the traveling direction L2 of the front sound waves output from the pair of lower speakers 12 both reach the ear Ea of the viewer Hm. This is the direction we are headed.
　また、一対の下スピーカ１２からは、右チャンネル用のフロント音波と、左チャンネル用のフロント音波と、によって、ステレオモードの音波（フロント音波）が前方に出力される。 Further, from the pair of lower speakers 12, stereo mode sound waves (front sound waves) are output forward by a front sound wave for the right channel and a front sound wave for the left channel.
　さらに、右上スピーカ１１Ｒから出力される右チャンネル用のフロント音波は、右下スピーカ１２Ｒから出力される右チャンネル用のフロント音波と同じ成分の音波である。左上スピーカ１１Ｌから出力される左チャンネル用のフロント音波は、左下スピーカ１２Ｌから出力される左チャンネル用のフロント音波と同じ成分の音波である。すなわち、一対の上スピーカ１１から出力されるフロント音波（ステレオモードのフロント音波）の成分は、一対の下スピーカ１２から出力されるフロント音波（ステレオモードのフロント音波）の成分と同じである。 Further, the front sound wave for the right channel output from the upper right speaker 11R is a sound wave with the same component as the front sound wave for the right channel output from the lower right speaker 12R. The front sound wave for the left channel outputted from the upper left speaker 11L is a sound wave having the same component as the front sound wave for the left channel outputted from the lower left speaker 12L. That is, the components of the front sound waves (front sound waves in stereo mode) output from the pair of upper speakers 11 are the same as the components of the front sound waves (front sound waves in stereo mode) output from the pair of lower speakers 12.
　このため、本装置１は、フロントスピーカユニット１０より、聴視者に対して臨場感のある音の広がりを提供できる。その結果、サラウンド効果は、高まる。 Therefore, the present device 1 can provide the audience with a realistic sound spread from the front speaker unit 10. As a result, the surround effect is enhanced.
　さらに、右上スピーカ１１Ｒは、上下方向において、右下スピーカ１２Ｒと約５０センチメートルの距離を空けて配置される。左上スピーカ１１Ｌは、上下方向において、左下スピーカ１２Ｌと約５０センチメートルの距離を空けて配置される。このように、一対の上スピーカ１１は、一対の下スピーカ１２と上下方向において距離を空けて配置されることにより、サラウンド効果は、より高まる。 Furthermore, the upper right speaker 11R is arranged with a distance of about 50 centimeters from the lower right speaker 12R in the vertical direction. The upper left speaker 11L is arranged at a distance of about 50 centimeters from the lower left speaker 12L in the vertical direction. In this way, the pair of upper speakers 11 are arranged at a distance from the pair of lower speakers 12 in the vertical direction, thereby further enhancing the surround effect.
●リアスピーカユニットの構成
　図５に戻る。
　前述のとおり、リアスピーカユニット２０は、一対のリアスピーカボックス２１を備える。一対のリアスピーカボックス２１は、後述される各構成部材により構成されて、リア音波を出力する。一対のリアスピーカボックス２１は、右スピーカボックス２１Ｒと左スピーカボックス２１Ｌとを備える。右スピーカボックス２１Ｒは、表示面Ｓ（図４参照）の後方（表示部ケース４０の後部）における右部に配置される。左スピーカボックス２１Ｌは、表示面Ｓの後方（表示部ケース４０の後部）における左部に配置される。右スピーカボックス２１Ｒの機能や形状・大きさは、左スピーカボックス２１Ｌの機能や形状・大きさと同じである。右スピーカボックス２１Ｒと左スピーカボックス２１Ｌとの相違は、表示部ケース４０における配置位置のみである。そこで、以下のリアスピーカボックス２１に関する構成は、右スピーカボックス２１Ｒを例に説明される。 ●Configuration of rear speaker unit Return to Figure 5.
As described above, the rear speaker unit 20 includes a pair of rear speaker boxes 21. The pair of rear speaker boxes 21 are configured by each component described later and output rear sound waves. The pair of rear speaker boxes 21 includes a right speaker box 21R and a left speaker box 21L. The right speaker box 21R is arranged on the right side of the rear of the display surface S (see FIG. 4) (the rear of the display case 40). The left speaker box 21L is arranged on the left side of the rear of the display surface S (the rear of the display case 40). The function, shape, and size of the right speaker box 21R are the same as those of the left speaker box 21L. The only difference between the right speaker box 21R and the left speaker box 21L is the arrangement position in the display case 40. Therefore, the following configuration regarding the rear speaker box 21 will be explained using the right speaker box 21R as an example.
　図９は、右スピーカボックス２１Ｒ（リアスピーカボックス２１）の概略構成を示す平面図である。
　図１０は、図９の右スピーカボックス２１Ｒの分解斜視図である。
　図１１は、右保持部材２３Ｒの概略構成を示す斜視図である。
　図１２は、図９のＢ－Ｂ線矢視断面図である。
　図１３は、図９のＣ－Ｃ線矢視断面図である。
　図１４は、図３のＥ－Ｅ線矢視概略断面図である。同図では、説明に必要な構成部材や線を除き、一部の構成部材や線の図示が省略されている。 FIG. 9 is a plan view showing a schematic configuration of the right speaker box 21R (rear speaker box 21).
FIG. 10 is an exploded perspective view of the right speaker box 21R of FIG. 9.
FIG. 11 is a perspective view showing a schematic configuration of the right holding member 23R.
FIG. 12 is a sectional view taken along the line BB in FIG.
FIG. 13 is a sectional view taken along line CC in FIG.
FIG. 14 is a schematic cross-sectional view taken along line EE in FIG. 3. In this figure, illustration of some structural members and lines is omitted except for those necessary for explanation.
　右スピーカボックス２１Ｒは、右スピーカ２２Ｒと、右保持部材２３Ｒと、右音波反射部材２４Ｒと、右音導部２５Ｒ（右側方音導部２５Ｒ１，右上方音導部２５Ｒ２）と、右音響特性孔２６Ｒｈ（右側方特性孔２６Ｒｈ１，右上方特性孔２６Ｒｈ２）と、右音導孔２７Ｒｈ（右側方音導孔２７Ｒｈ１，右上方音導孔２７Ｒｈ２）と、を備える。 The right speaker box 21R includes a right speaker 22R, a right holding member 23R, a right sound wave reflecting member 24R, a right sound guide part 25R (right side sound guide part 25R1, right upper sound guide part 25R2), and a right acoustic characteristic hole. 26Rh (right side characteristic hole 26Rh1, right upper characteristic hole 26Rh2), and right sound guide hole 27Rh (right side sound guide hole 27Rh1, right upper sound guide hole 27Rh2).
　右スピーカ２２Ｒは、リア音波のうち、右チャンネル用のリア音波（音声）を出力（放音）する。右スピーカ２２Ｒは、出力面を後方に向けて配置される。すなわち、右スピーカ２２Ｒからリア音波が出力される方向は、後方向である。 The right speaker 22R outputs (emits) a rear sound wave (sound) for the right channel among the rear sound waves. The right speaker 22R is arranged with its output surface facing rearward. That is, the direction in which the rear sound waves are output from the right speaker 22R is the rear direction.
　なお、右スピーカは、出力面を前方に向けて配置されてもよい。このとき、右スピーカからリア音波が出力される方向は、前方向である。 Note that the right speaker may be placed with its output surface facing forward. At this time, the direction in which the rear sound waves are output from the right speaker is the front direction.
　右保持部材２３Ｒは、右スピーカ２２Ｒを保持する。右保持部材２３Ｒは、表示面Ｓの後方（表示部ケース４０の後部）に配置される。また、右保持部材２３Ｒは、表示部Ｄと右音波反射部材２４Ｒとの間に配置される。右保持部材２３Ｒの形状は、略「Ｌ」型である。右保持部材２３Ｒは、右スピーカ保持部２３１Ｒと、右傾斜面２３２Ｒと、右壁部２３３Ｒと、を備える。 The right holding member 23R holds the right speaker 22R. The right holding member 23R is arranged behind the display surface S (at the rear of the display case 40). Further, the right holding member 23R is arranged between the display section D and the right sound wave reflecting member 24R. The shape of the right holding member 23R is approximately "L" shaped. The right holding member 23R includes a right speaker holding portion 231R, a right inclined surface 232R, and a right wall portion 233R.
　右スピーカ保持部２３１Ｒは、右スピーカ２２Ｒを保持する。 The right speaker holding section 231R holds the right speaker 22R.
　右傾斜面２３２Ｒは、右音導部２５Ｒの一部を構成する。右傾斜面２３２Ｒは、右スピーカ保持部２３１Ｒに連結される。右傾斜面２３２Ｒは、右側方傾斜面２３２Ｒ１と右上方傾斜面２３２Ｒ２とを備える。 The right inclined surface 232R constitutes a part of the right sound guiding section 25R. The right inclined surface 232R is connected to the right speaker holding portion 231R. The right inclined surface 232R includes a right inclined surface 232R1 and an upper right inclined surface 232R2.
　右側方傾斜面２３２Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、延在する。右側方傾斜面２３２Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、前方に向けて徐々に傾斜する。右側方傾斜面２３２Ｒ１は、テーパ―傾斜面である。 The right side inclined surface 232R1 extends from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. The right side inclined surface 232R1 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. The right side inclined surface 232R1 is a tapered inclined surface.
　右上方傾斜面２３２Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、延在する。右上方傾斜面２３２Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、前方に向けて徐々に傾斜する。右上方傾斜面２３２Ｒ２は、テーパ―傾斜面である。 The upper right inclined surface 232R2 extends from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. The upper right inclined surface 232R2 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. The upper right inclined surface 232R2 is a tapered inclined surface.
　なお、右側方傾斜面と右上方傾斜面それぞれは、湾曲して傾斜する湾曲面でもよい。 Note that each of the right side inclined surface and the right upper inclined surface may be a curved surface that is curved and inclined.
　右壁部２３３Ｒは、右傾斜面２３２Ｒから後方に立設される。右壁部２３３Ｒは、右傾斜面２３２Ｒと共に、音導部（右音導部２５Ｒ）の一部を構成する。右壁部２３３Ｒは、右側方壁部２３３Ｒ１と右上方壁部２３３Ｒ２とを備える。 The right wall portion 233R is erected rearward from the right inclined surface 232R. The right wall portion 233R constitutes a part of the sound guiding portion (right sound guiding portion 25R) together with the right inclined surface 232R. The right wall portion 233R includes a right side wall portion 233R1 and an upper right wall portion 233R2.
　図１５は、図９のＦ矢視図である。
　以下の説明においては、図９－図１４も適宜参照される（図１６についても同じ）。 FIG. 15 is a view taken along arrow F in FIG.
In the following description, FIGS. 9 to 14 will also be referred to as appropriate (the same applies to FIG. 16).
　右側方壁部２３３Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、右側方傾斜面２３２Ｒ１から後方に立設される。右側方壁部２３３Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、上方に向けて徐々に傾斜する。すなわち、右側方壁部２３３Ｒ１が傾斜する方向は、右側方傾斜面２３２Ｒ１が傾斜する方向とは異なる。右側方壁部２３３Ｒ１の傾斜は、湾曲する湾曲面である。右側方壁部２３３Ｒ１の湾曲面は、いわゆるエクスポーネンシャルカーブである。なお、右側方壁部の傾斜は、上方に向けて徐々に傾斜するテーパ―傾斜面でもよい。 The right side wall portion 233R1 is erected rearward from the right side inclined surface 232R1 from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. The right side wall portion 233R1 gradually slopes upward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. That is, the direction in which the right side wall portion 233R1 is inclined is different from the direction in which the right side inclined surface 232R1 is inclined. The slope of the right side wall portion 233R1 is a curved surface. The curved surface of the right side wall portion 233R1 is a so-called exponential curve. Note that the slope of the right side wall portion may be a tapered slope that gradually slopes upward.
　図１６は、図９のＧ矢視図である。 16 is a view taken along arrow G in FIG. 9.
　右上方壁部２３３Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、右上方傾斜面２３２Ｒ２から後方に立設される。右上方壁部２３３Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、右方に向けて徐々に傾斜する。すなわち、右上方壁部２３３Ｒ２が傾斜する方向は、右上方傾斜面２３２Ｒ２が傾斜する方向とは異なる。右上方壁部２３３Ｒ２の傾斜は、湾曲する湾曲面である。右上方壁部２３３Ｒ２の湾曲面は、いわゆるエクスポーネンシャルカーブである。また、右上方壁部２３３Ｒ２は、右側方壁部２３３Ｒ１と近づく方向に傾斜する。なお、右上方壁部の傾斜は、右方に向けて徐々に傾斜するテーパ―傾斜面でもよい。 The upper right wall portion 233R2 is erected rearward from the upper right inclined surface 232R2 from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. The upper right wall portion 233R2 gradually slopes rightward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. That is, the direction in which the upper right wall portion 233R2 is inclined is different from the direction in which the upper right inclined surface 232R2 is inclined. The slope of the upper right wall portion 233R2 is a curved surface. The curved surface of the upper right wall portion 233R2 is a so-called exponential curve. Further, the upper right wall portion 233R2 is inclined in a direction approaching the right side wall portion 233R1. Note that the slope of the upper right wall portion may be a tapered slope that gradually slopes toward the right.
　右スピーカ保持部２３１Ｒは、右傾斜面２３２Ｒ（右側方傾斜面２３２Ｒ１，右上方傾斜面２３２Ｒ２）と、右壁部２３３Ｒ（右側方壁部２３３Ｒ１，右上方壁部２３３Ｒ２）と一体的に構成される。すなわち、右スピーカ保持部２３１Ｒと右傾斜面２３２Ｒと右壁部２３３Ｒそれぞれは、右保持部材２３Ｒの一部である。 The right speaker holding portion 231R is integrally configured with a right inclined surface 232R (right side inclined surface 232R1, right upper inclined surface 232R2) and a right wall portion 233R (right side wall portion 233R1, right upper wall portion 233R2). That is, the right speaker holding portion 231R, the right inclined surface 232R, and the right wall portion 233R are each a part of the right holding member 23R.
　なお、右スピーカ保持部は、右傾斜面（右側方傾斜面，右上方傾斜面）と、右壁部（右側方壁部，右上方壁部）と別々の部材で構成されていてもよい。 Note that the right speaker holding portion may be configured with the right inclined surface (right side inclined surface, right upper inclined surface) and the right wall portion (right side wall portion, right upper wall portion) as separate members.
　右音波反射部材２４Ｒは、右スピーカ２２Ｒから出力されたリア音波を反射させる。右音波反射部材２４Ｒは、表示部Ｄと右保持部材２３Ｒよりも後方に配置される。右音波反射部材２４Ｒは、右保持部材２３Ｒに組付けられる。右音波反射部材２４Ｒの形状は、右保持部材２３Ｒの形状に対応する、略「Ｌ」型である。 The right sound wave reflecting member 24R reflects the rear sound wave output from the right speaker 22R. The right sound wave reflecting member 24R is arranged behind the display section D and the right holding member 23R. The right sound wave reflecting member 24R is assembled to the right holding member 23R. The shape of the right sound wave reflecting member 24R is approximately "L" shaped, corresponding to the shape of the right holding member 23R.
　右音導部２５Ｒは、右音波反射部材２４Ｒで反射されたリア音波を、右方、および、上方に導く。すなわち、右音導部２５Ｒは、リア音波が右音波反射部材２４Ｒに入射する方向とは異なる方向に導く。右音導部２５Ｒは、右傾斜面２３２Ｒと、右壁部２３３Ｒと、右音波反射部材２４Ｒと、で構成される。すなわち、右音導部２５Ｒは、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。右音導部２５Ｒは、右側方音導部２５Ｒ１と右上方音導部２５Ｒ２とを備える。 The right sound guiding portion 25R guides the rear sound waves reflected by the right sound wave reflecting member 24R to the right and upward. That is, the right sound guide portion 25R guides the rear sound wave in a direction different from the direction in which it enters the right sound wave reflection member 24R. The right sound guide section 25R is composed of a right inclined surface 232R, a right wall section 233R, and a right sound wave reflecting member 24R. In other words, the right sound guiding section 25R is composed of a right holding member 23R and a right sound wave reflecting member 24R. The right sound guide section 25R includes a right sound guide section 25R1 and an upper right sound guide section 25R2.
　右側方音導部２５Ｒ１は、右音波反射部材２４Ｒで反射されたリア音波を、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、導く。右側方音導部２５Ｒ１は、右側方傾斜面２３２Ｒ１と、右側方壁部２３３Ｒ１と、右音波反射部材２４Ｒと、で構成される、左右方向に延びる音導空間である。すなわち、右側方音導部２５Ｒ１は、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。つまり、右側方音導部２５Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）と右側方音波出力孔６６Ｒｈ１との間において、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて傾斜する傾斜面を備える。この傾斜面は、右側方傾斜面２３２Ｒ１である。換言すれば、右側方音導部２５Ｒ１は、前方に向けて、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、徐々に傾斜する。 The right side sound guiding portion 25R1 guides the rear sound wave reflected by the right sound wave reflecting member 24R from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. The right side sound guide section 25R1 is a sound guide space extending in the left-right direction and is configured of a right side inclined surface 232R1, a right side wall section 233R1, and a right sound wave reflecting member 24R. That is, the right side sound guide section 25R1 is composed of the right holding member 23R and the right sound wave reflecting member 24R. In other words, the right side sound guide section 25R1 moves from the right speaker holding section 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 between the right speaker holding section 231R (right speaker 22R) and the right side sound wave output hole 66Rh1. It has an inclined surface that slopes toward the side. This inclined surface is the right inclined surface 232R1. In other words, the right side sound guide portion 25R1 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side.
　また、前述のとおり、右側方壁部２３３Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、上方に向けて傾斜する。すなわち、右側方音導部２５Ｒ１は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、前方および上方に向けて傾斜する。つまり、右側方音導部２５Ｒ１の内部空間では、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、前後方向の幅、および、上下方向の幅が、大きくなる（広がる）。このため、右側方音導部２５Ｒ１における、左右方向に直交する断面積（左右方向に直交する前後方向・上下方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側にかけて、徐々に拡大する。換言すれば、右側方音導部２５Ｒ１における、リア音波の進行方向に直交する方向の断面積（左右方向に直交する前後方向・上下方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側に向けて、徐々に拡大する。 Furthermore, as described above, the right side wall portion 233R1 is inclined upward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. That is, the right side sound guide portion 25R1 is inclined forward and upward from the right speaker holding portion 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side. That is, in the internal space of the right side sound guiding section 25R1, the width in the front-rear direction and the width in the vertical direction increase from the right speaker holding section 231R (right speaker 22R) side to the right side sound wave output hole 66Rh1 side ( spread). Therefore, the cross-sectional area perpendicular to the left-right direction (the cross-sectional area in the front-rear direction and up-down direction perpendicular to the left-right direction) of the right side sound guide portion 25R1 is the right side sound wave from the right speaker holding portion 231R (right speaker 22R) side. It gradually expands toward the output hole 66Rh1 side. In other words, the cross-sectional area of the right sound guiding portion 25R1 in the direction perpendicular to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and vertical direction perpendicular to the left-right direction) is equal to that of the right speaker holding portion 231R (right speaker 22R). ) side toward the right side sound wave output hole 66Rh1 side.
　右上方音導部２５Ｒ２は、右音波反射部材２４Ｒで反射されたリア音波を、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、導く。右上方音導部２５Ｒ２は、右上方傾斜面２３２Ｒ２と、右上方壁部２３３Ｒ２と、右音波反射部材２４Ｒと、で構成される、上下方向に延びる音導空間である。すなわち、右上方音導部２５Ｒ２は、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。つまり、右上方音導部２５Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）と右上方音波出力孔６６Ｒｈ２との間において、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて傾斜する傾斜面を備える。この傾斜面は、右上方傾斜面２３２Ｒ２である。換言すれば、右上方音導部２５Ｒ２は、前方に向けて、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、徐々に傾斜する。 The upper right sound guiding portion 25R2 guides the rear sound waves reflected by the right sound wave reflecting member 24R from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. The upper right sound guide portion 25R2 is a sound guide space extending in the vertical direction and includes an upper right inclined surface 232R2, an upper right wall portion 233R2, and a right sound wave reflecting member 24R. In other words, the upper right sound guiding section 25R2 is composed of a right holding member 23R and a right sound wave reflecting member 24R. In other words, the upper right sound guide section 25R2 moves from the right speaker holding section 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 between the right speaker holding section 231R (right speaker 22R) and the upper right sound wave output hole 66Rh2. It has an inclined surface that slopes toward the side. This inclined surface is the upper right inclined surface 232R2. In other words, the upper right sound guide portion 25R2 gradually slopes forward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side.
　また、前述のとおり、右上方壁部２３３Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、右方に向けて傾斜する。すなわち、右上方音導部２５Ｒ２は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、前方および右方に向けて傾斜する。つまり、右上方音導部２５Ｒ２の内部空間では、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、前後方向の幅、および、左右方向の幅が、大きくなる（広がる）。このため、右上方音導部２５Ｒ２における、上下方向に直交する断面積（上下方向に直交する前後方向・左右方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側にかけて、徐々に拡大する。換言すれば、右側方音導部２５Ｒ１における、リア音波の進行方向に直交する方向の断面積（上下方向に直交する前後方向・左右方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側に向けて、徐々に拡大する。 Further, as described above, the upper right wall portion 233R2 is inclined rightward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. That is, the upper right sound guide portion 25R2 is inclined forward and rightward from the right speaker holding portion 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side. That is, in the internal space of the upper right sound guide section 25R2, the width in the front-rear direction and the width in the left-right direction increase from the right speaker holding section 231R (right speaker 22R) side to the upper right sound wave output hole 66Rh2 side ( spread). Therefore, the cross-sectional area perpendicular to the vertical direction (the cross-sectional area in the front-rear direction and the horizontal direction perpendicular to the vertical direction) of the upper right sound guiding portion 25R2 is the same as the upper right sound wave from the right speaker holding portion 231R (right speaker 22R) side. It gradually expands toward the output hole 66Rh2 side. In other words, the cross-sectional area of the right side sound guiding portion 25R1 in the direction perpendicular to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and the left-right direction perpendicular to the up-down direction) is the same as that of the right speaker holding portion 231R (right speaker 22R). ) side toward the upper right sound wave output hole 66Rh2 side.
　右音響特性孔２６Ｒｈは、右音響調整孔６７Ｒｈ（音響調整孔６７ｈ）を介して後枠体６４（筐体６０）の外部と連通する。右音響特性孔２６Ｒｈは、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。右音響特性孔２６Ｒｈは、右側方特性孔２６Ｒｈ１と、右上方特性孔２６Ｒｈ２と、を備える。 The right acoustic characteristic hole 26Rh communicates with the outside of the rear frame 64 (casing 60) via the right acoustic adjustment hole 67Rh (acoustic adjustment hole 67h). The right acoustic characteristic hole 26Rh is composed of a right holding member 23R and a right sound wave reflecting member 24R. The right acoustic characteristic hole 26Rh includes a right side characteristic hole 26Rh1 and an upper right characteristic hole 26Rh2.
　右側方特性孔２６Ｒｈ１は、第１右音響調整孔６７Ｒｈ１（音響調整孔６７ｈ）を介して後枠体６４（筐体６０）の外部と連通する。右側方特性孔２６Ｒｈ１は、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。右側方特性孔２６Ｒｈ１は、左右方向において、右スピーカ２２Ｒに対して右側方音導部２５Ｒ１とは反対側に配置される。右側方特性孔２６Ｒｈ１は、上下方向に延在する孔である。 The right side characteristic hole 26Rh1 communicates with the outside of the rear frame 64 (casing 60) via the first right sound adjustment hole 67Rh1 (sound adjustment hole 67h). The right side characteristic hole 26Rh1 is composed of a right holding member 23R and a right sound wave reflecting member 24R. The right side characteristic hole 26Rh1 is arranged on the opposite side of the right side sound guiding portion 25R1 with respect to the right speaker 22R in the left-right direction. The right side characteristic hole 26Rh1 is a hole extending in the vertical direction.
　右上方特性孔２６Ｒｈ２は、第２右音響調整孔６７Ｒｈ２（音響調整孔６７ｈ）を介して後枠体６４（筐体６０）の外部と連通する。右上方特性孔２６Ｒｈ２は、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。右上方特性孔２６Ｒｈ２は、上下方向において、右スピーカ２２Ｒに対して右上方音導部２５Ｒ２とは反対側に配置される。右上方特性孔２６Ｒｈ２は、左右方向に延在する孔である。 The upper right characteristic hole 26Rh2 communicates with the outside of the rear frame 64 (casing 60) via the second right acoustic adjustment hole 67Rh2 (acoustic adjustment hole 67h). The upper right characteristic hole 26Rh2 is composed of a right holding member 23R and a right sound wave reflecting member 24R. The upper right characteristic hole 26Rh2 is arranged on the opposite side of the upper right sound guide portion 25R2 with respect to the right speaker 22R in the vertical direction. The upper right characteristic hole 26Rh2 is a hole extending in the left-right direction.
　右音導孔２７Ｒｈは、右音導部２５Ｒ内に導かれるリア音波を、右音波出力孔６６Ｒｈを介して筐体６０の外部に放音する。右音導孔２７Ｒｈは、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。右音導孔２７Ｒｈは、右音導部２５Ｒの出口である。右音導孔２７Ｒｈは、右側方音導孔２７Ｒｈ１と、右上方音導孔２７Ｒｈ２と、を備える。 The right sound guide hole 27Rh emits the rear sound wave guided into the right sound guide part 25R to the outside of the housing 60 via the right sound wave output hole 66Rh. The right sound guiding hole 27Rh is composed of a right holding member 23R and a right sound wave reflecting member 24R. The right sound guide hole 27Rh is an outlet of the right sound guide part 25R. The right sound guide hole 27Rh includes a right sound guide hole 27Rh1 and an upper right sound guide hole 27Rh2.
　右側方音導孔２７Ｒｈ１は、右側方音導部２５Ｒ１に導かれるリア音波を、右側方音波出力孔６６Ｒｈ１を介して右側枠体６３Ｒ（筐体６０）の外部に放音する。右側方音導孔２７Ｒｈ１は、右側方音導部２５Ｒ１の出口である。右側方音導孔２７Ｒｈ１は、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。 The right side sound guide hole 27Rh1 emits the rear sound wave guided to the right side sound guide portion 25R1 to the outside of the right side frame 63R (casing 60) via the right side sound wave output hole 66Rh1. The right side sound guide hole 27Rh1 is an outlet of the right side sound guide part 25R1. The right side sound guiding hole 27Rh1 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
　右上方音導孔２７Ｒｈ２は、右上方音導部２５Ｒ２に導かれるリア音波を、右上方音波出力孔６６Ｒｈ２を介して上枠体６１（筐体６０）の外部に放音する。右上方音導孔２７Ｒｈ２は、右上方音導部２５Ｒ２の出口である。右上方音導孔２７Ｒｈ２は、右保持部材２３Ｒと右音波反射部材２４Ｒとで構成される。 The upper right sound guide hole 27Rh2 emits rear sound waves guided to the upper right sound guide portion 25R2 to the outside of the upper frame body 61 (casing 60) via the upper right sound wave output hole 66Rh2. The upper right sound guiding hole 27Rh2 is an outlet of the upper right sound guiding portion 25R2. The upper right sound guiding hole 27Rh2 is composed of a right holding member 23R and a right sound wave reflecting member 24R.
　前述のとおり、右スピーカボックス２１Ｒの機能や形状・大きさは、左スピーカボックス２１Ｌの機能や形状・大きさと同じである。すなわち、左スピーカボックス２１Ｌは、左スピーカ（不図示）と、左保持部材２３Ｌ（図５参照）と、左音波反射部材２４Ｌ（図５参照）と、左音導部（不図示）と、左音響特性孔２６Ｌｈと、左音導孔（不図示）と、を備える。 As mentioned above, the function, shape, and size of the right speaker box 21R are the same as the function, shape, and size of the left speaker box 21L. That is, the left speaker box 21L includes a left speaker (not shown), a left holding member 23L (see FIG. 5), a left sound wave reflecting member 24L (see FIG. 5), a left sound guide section (not shown), and a left speaker box 21L. It includes an acoustic characteristic hole 26Lh and a left sound guide hole (not shown).
　また、左保持部材２３Ｌは、左スピーカ保持部（不図示）と、左傾斜面（不図示）と、左壁部（不図示）と、を備える。左傾斜面は、左側方傾斜面（不図示）と左上方傾斜面（不図示）とを備える。左壁部は、左側方壁部（不図示）と左上方壁部（不図示）とを備える。 Further, the left holding member 23L includes a left speaker holding part (not shown), a left inclined surface (not shown), and a left wall part (not shown). The left inclined surface includes a left inclined surface (not shown) and an upper left inclined surface (not shown). The left wall includes a left side wall (not shown) and an upper left wall (not shown).
　さらに、左音導部は、左側方音導部（不図示）と左上方音導部（不図示）とを備える。左音響特性孔２６Ｌｈは、左側方特性孔２６Ｌｈ１と左上方特性孔２６Ｌｈ２とを備える。左音導孔は、左側方音導孔（不図示）と左上方音導孔（不図示）とを備える。 Further, the left sound guide section includes a left side sound guide section (not shown) and an upper left sound guide section (not shown). The left acoustic characteristic hole 26Lh includes a left side characteristic hole 26Lh1 and an upper left characteristic hole 26Lh2. The left sound guide hole includes a left side sound guide hole (not shown) and an upper left sound guide hole (not shown).
　右スピーカ２２Ｒと左スピーカそれぞれは、本発明における「リアスピーカ」の例である。右保持部材２３Ｒと左保持部材２３Ｌそれぞれは、本発明における「保持部材」の例である。右音波反射部材２４Ｒと左音波反射部材２４Ｌそれぞれは、本発明における「音波反射部材」の例である。右音導部２５Ｒと左音導部それぞれは、本発明における「音導部」の例である。右側方音導部２５Ｒ１と左側方音導部それぞれは、本発明における「側方音導部」の例である。右上方音導部２５Ｒ２と右上方音導部それぞれは、本発明における「上方音導部」の例である。右音響特性孔２６Ｒｈと左音響特性孔２６Ｌｈそれぞれは、本発明における「音響特性孔」の例である。右側方特性孔２６Ｒｈ１と左側方特性孔２６Ｌｈ１それぞれは、本発明における「側方音響特性孔」の例である。右上方特性孔２６Ｒｈ２と左上方特性孔２６Ｌｈ２それぞれは、本発明における「上方音響特性孔」の例である。 The right speaker 22R and the left speaker are each an example of a "rear speaker" in the present invention. The right holding member 23R and the left holding member 23L are each an example of a "holding member" in the present invention. The right sound wave reflecting member 24R and the left sound wave reflecting member 24L are each an example of a "sound wave reflecting member" in the present invention. The right sound guide section 25R and the left sound guide section are each an example of a "sound guide section" in the present invention. The right side sound guide section 25R1 and the left side sound guide section are each an example of a "side sound guide section" in the present invention. The upper right sound guide section 25R2 and the upper right sound guide section are examples of the "upper sound guide section" in the present invention. The right acoustic characteristic hole 26Rh and the left acoustic characteristic hole 26Lh are each an example of an "acoustic characteristic hole" in the present invention. Each of the right side characteristic hole 26Rh1 and the left side characteristic hole 26Lh1 is an example of a "side acoustic characteristic hole" in the present invention. The upper right characteristic hole 26Rh2 and the upper left characteristic hole 26Lh2 are examples of the "upper acoustic characteristic hole" in the present invention.
　左スピーカは、リア音波のうち、左チャンネル用のリア音波（音声）を出力（放音）する。左スピーカは、出力面を後方に向けて配置される。すなわち、左スピーカからリア音波が出力される方向は、後方向である。 The left speaker outputs (emits sound) rear sound waves (audio) for the left channel among the rear sound waves. The left speaker is arranged with its output surface facing rearward. That is, the direction in which the rear sound waves are output from the left speaker is the rear direction.
　なお、左スピーカは、出力面を前方に向けて配置されてもよい。このとき、左スピーカからリア音波が出力される方向は、前方向である。 Note that the left speaker may be placed with its output surface facing forward. At this time, the direction in which the rear sound waves are output from the left speaker is the front direction.
　前述のとおり、右スピーカ２２Ｒは、リア音波のうち、右チャンネル用のリア音波（音声）を出力（放音）する。このため、右スピーカから出力される右チャンネル用のリア音波と、左スピーカから出力される左チャンネル用のリア音波と、により、ステレオモードの音波（リア音波）が右スピーカ２２Ｒ，左スピーカより出力される。 As described above, the right speaker 22R outputs (emits) rear sound waves (audio) for the right channel among the rear sound waves. Therefore, stereo mode sound waves (rear sound waves) are output from the right speaker 22R and the left speaker by the rear sound waves for the right channel output from the right speaker and the rear sound waves for the left channel output from the left speaker. be done.
　ここで、右スピーカ２２Ｒから出力される、右チャンネル用のリア音波（音声）の一部は、右音波反射部材２４Ｒで右方に反射された後、右側方音導部２５Ｒ１と右側方音導孔２７Ｒｈ１とを介して、右側方音波出力孔６６Ｒｈ１から右側枠体６３Ｒ（筐体６０）の外部に放音される。また、右スピーカ２２Ｒから出力される、右チャンネル用のリア音波（音声）の他の一部は、右音波反射部材２４Ｒで上方に反射された後、右上方音導部２５Ｒ２と右上方音導孔２７Ｒｈ２とを介して、右上方音波出力孔６６Ｒｈ２から上枠体６１（筐体６０）の外部に放音される。 Here, a part of the rear sound wave (audio) for the right channel output from the right speaker 22R is reflected to the right by the right sound wave reflecting member 24R, and then passes through the right sound guide section 25R1 and the right sound guide part 25R1. The sound is emitted from the right side sound wave output hole 66Rh1 to the outside of the right side frame 63R (casing 60) via the hole 27Rh1. In addition, another part of the rear sound wave (audio) for the right channel output from the right speaker 22R is reflected upward by the right sound wave reflecting member 24R, and then passes through the upper right sound guide section 25R2 and the upper right sound guide. The sound is emitted from the upper right sound wave output hole 66Rh2 to the outside of the upper frame body 61 (casing 60) via the hole 27Rh2.
　同様に、左スピーカから出力される、左チャンネル用のリア音波（音声）の一部は、左音波反射部材２４Ｌで左方に反射された後、左側方音導部と左側方音導孔とを介して、左側方音波出力孔６６Ｌｈ１から左側枠体６３Ｌ（筐体６０）の外部に放音される。また、左スピーカ２２Ｌから出力される、左チャンネル用のリア音波（音声）の他の一部は、左音波反射部材２４Ｌで上方に反射された後、左上方音導部と左上方音導孔とを介して、左上方音波出力孔６６Ｌｈ２から上枠体６１（筐体６０）の外部に放音される。 Similarly, a part of the rear sound wave (audio) for the left channel output from the left speaker is reflected to the left by the left sound wave reflecting member 24L, and then passes through the left sound guide section and the left sound guide hole. The sound is emitted from the left side sound wave output hole 66Lh1 to the outside of the left side frame 63L (casing 60) through the left side sound wave output hole 66Lh1. In addition, another part of the rear sound wave (audio) for the left channel output from the left speaker 22L is reflected upward by the left sound wave reflecting member 24L, and then is sent to the upper left sound guide section and the upper left sound guide hole. The sound is emitted from the upper left sound wave output hole 66Lh2 to the outside of the upper frame body 61 (casing 60).
　このように、リアスピーカ（右スピーカ２２Ｒ，左スピーカ）から出力されるリア音波は、音導部（右音導部２５Ｒ，左音導部）内で反射されて、側方音波出力孔（右側方音波出力孔６６Ｒｈ１，左側方音波出力孔６６Ｌｈ１）と、上方音波出力孔（右上方音波出力孔６６Ｒｈ２，左上方音波出力孔６６Ｌｈ２）それぞれから筐体６０（右側枠体６３Ｒ，左側枠体６３Ｌ，上枠体６１）の外部に放音される。 In this way, the rear sound waves output from the rear speakers (right speaker 22R, left speaker) are reflected within the sound guide parts (right sound guide part 25R, left sound guide part), and are reflected in the lateral sound wave output holes (right side sound guide part 25R, left sound guide part). The housing 60 (right side frame 63R, left side frame 63L, The sound is emitted to the outside of the upper frame body 61).
　このため、本装置１は、リアスピーカユニット２０によりリア音波を４方向より聴視者に到達させる。そのため、本装置１は、聴視者に対して臨場感のある音の広がりを提供できる。しかも、本装置１は、リアスピーカユニット２０により、フロント音波とは時間差のあるリア音波を４方向より聴視者に到達させる。そのため、本装置１は、聴視者に対して臨場感のある音の広がりを提供できる。その結果、サラウンド効果は、高まる。 For this reason, the present device 1 uses the rear speaker unit 20 to cause rear sound waves to reach the viewer from four directions. Therefore, the present device 1 can provide the audience with a realistic sound spread. Furthermore, the present device 1 uses the rear speaker unit 20 to cause rear sound waves having a time difference from the front sound waves to reach the viewer from four directions. Therefore, the present device 1 can provide the audience with a realistic sound spread. As a result, the surround effect is enhanced.
●サブウーファユニットの構成
　図５と図６とに戻る。
　サブウーファユニット３０は、サブウーファ３１と、サブウーファボックス３２と、を備える。 ●Subwoofer unit configuration Return to FIGS. 5 and 6.
The subwoofer unit 30 includes a subwoofer 31 and a subwoofer box 32.
　サブウーファ３１は、右チャンネル用の音波と、左チャンネル用の音波とがミックスされたサブ音波を出力する。サブウーファ３１は、出力面を下方に向けて配置される。 The subwoofer 31 outputs sub-sound waves that are a mixture of sound waves for the right channel and sound waves for the left channel. The subwoofer 31 is arranged with its output surface facing downward.
　サブウーファボックス３２は、サブウーファ３１を保持すると共に、内部に収容する。サブウーファボックス３２は、表示部ケース４０の略中央の下部に配置される。 The subwoofer box 32 holds the subwoofer 31 and accommodates it inside. The subwoofer box 32 is arranged at the lower part of the display case 40 at the substantially center thereof.
　サブウーファ３１から出力されるサブ音波は、筐体６０の下方を回り込んで聴視者に到達する。 The sub-sound waves output from the subwoofer 31 go around below the housing 60 and reach the viewer.
　このため、本装置１は、サブウーファユニット３０により、フロント音波とリア音波とは異なる指向性の低い低域のサブ音波を聴視者に到達させることで、聴視者に対して臨場感のある音の広がりを提供できる。その結果、サラウンド効果は、高まる。 For this reason, the present device 1 uses the subwoofer unit 30 to deliver low-frequency sub-sound waves with low directivity, which are different from front and rear sound waves, to the viewer, thereby creating a sense of realism for the viewer. It can provide a wide range of sound. As a result, the surround effect is enhanced.
●まとめ●
　以上説明した実施の形態によれば、本装置１は、リア音波を出力するリアスピーカユニット２０と、リアスピーカユニット２０とを収容する筐体６０と、を有してなる。筐体６０は、リア音波を筐体６０の外部に放音するリア音波出力孔６６ｈを備える。本装置１は、聴視者に対して、リアスピーカユニット２０から第２音波を４方向から到達させる。これにより、本装置１は、聴視者に対して臨場感のある音の広がりを提供できる。 ●Summary●
According to the embodiment described above, the device 1 includes a rear speaker unit 20 that outputs rear sound waves, and a housing 60 that houses the rear speaker unit 20. The housing 60 includes a rear sound wave output hole 66h that emits rear sound waves to the outside of the housing 60. This device 1 causes second sound waves to reach the viewer from four directions from the rear speaker unit 20. Thereby, the present device 1 can provide a realistic sound spread to the listener.
　また、以上説明した実施の形態によれば、本装置１は、リアスピーカユニット２０に加えて、フロント音波を出力するフロントスピーカユニット１０を有してなる。筐体６０は、リア音波出力孔に加えて、フロント音波を筐体６０の外部に放音するフロント音波出力孔を備える。本装置１は、聴視者に対して、フロントスピーカユニット１０からフロント音波を到達させて、リアスピーカユニット２０からフロント音波とは時間差をもってリア音波を４方向から到達させる。これにより、本装置１は、聴視者に対して臨場感のある音の広がりを提供できる。 Furthermore, according to the embodiment described above, the device 1 includes, in addition to the rear speaker unit 20, the front speaker unit 10 that outputs front sound waves. The housing 60 includes a front sound wave output hole that emits front sound waves to the outside of the housing 60 in addition to the rear sound wave output hole. The present device 1 causes front sound waves to reach the viewer from the front speaker unit 10, and rear sound waves to reach the viewer from four directions with time differences from the front sound waves from the rear speaker unit 20. Thereby, the present device 1 can provide a realistic sound spread to the listener.
　また、以上説明した実施の形態によれば、右側方音導部２５Ｒ１における、リア音波の進行方向と直交する方向の断面積（左右方向と直交する前後方向・上下方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側に向けて、徐々に拡大する。同様に、右上方音導部２５Ｒ２における、リア音波の進行方向に直交する方向の断面積（上下方向に直交する前後方向・左右方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側に向けて、徐々に拡大する。すなわち、右側方音導部２５Ｒ１の形状と、右上方音導部２５Ｒ２の形状とは、いわゆるホーン形状である。このため、本装置１は、いわゆるホーン効果を実現する。 Further, according to the embodiment described above, the cross-sectional area of the right side sound guiding portion 25R1 in the direction orthogonal to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and vertical direction orthogonal to the left-right direction) is It gradually expands from the speaker holding portion 231R (right speaker 22R) side toward the right side sound wave output hole 66Rh1 side. Similarly, the cross-sectional area of the upper right sound guiding portion 25R2 in the direction perpendicular to the traveling direction of the rear sound wave (the cross-sectional area in the front-back direction and the left-right direction perpendicular to the up-down direction) is the same as that of the right speaker holding portion 231R (right speaker 22R). It gradually expands from the side toward the upper right sound wave output hole 66Rh2 side. That is, the shape of the right side sound guide part 25R1 and the shape of the right upper sound guide part 25R2 are so-called horn shapes. Therefore, this device 1 realizes the so-called horn effect.
　さらに、以上説明した実施の形態によれば、右音導部２５Ｒは、右音響調整孔６７Ｒｈを介して筐体６０の外部と連通する。このため、本装置１では、右音導部２５Ｒ内の空気圧を調整して、右音導部２５Ｒの内部に空気が籠るのを抑制できる。その結果、右音導部２５Ｒの内部の音響の特性は、適宜調整される。 Furthermore, according to the embodiment described above, the right sound guide portion 25R communicates with the outside of the housing 60 via the right sound adjustment hole 67Rh. Therefore, in the present device 1, air pressure within the right sound guide section 25R can be adjusted to suppress air from becoming trapped inside the right sound guide section 25R. As a result, the acoustic characteristics inside the right sound guide section 25R are adjusted as appropriate.
　さらにまた、右上スピーカ１１Ｒは、上下方向において、右下スピーカ１２Ｒと約５０センチメートルの距離を空けて配置される。左上スピーカ１１Ｌは、上下方向において、左下スピーカ１２Ｌと約５０センチメートルの距離を空けて配置される。このように、一対の上スピーカ１１は、一対の下スピーカ１２と上下方向において距離を空けて配置されることにより、本装置１が奏するサラウンド効果は、より高まる。 Furthermore, the upper right speaker 11R is arranged with a distance of about 50 centimeters from the lower right speaker 12R in the vertical direction. The upper left speaker 11L is arranged at a distance of about 50 centimeters from the lower left speaker 12L in the vertical direction. In this way, the pair of upper speakers 11 are arranged at a distance from the pair of lower speakers 12 in the vertical direction, thereby further enhancing the surround effect produced by the present device 1.
　なお、以上説明した実施の形態では、右側方音導部２５Ｒ１における、リア音波の進行方向と直交する方向の断面積（左右方向と直交する前後方向・上下方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右側方音波出力孔６６Ｒｈ１側に向けて、徐々に拡大する。同様に、右上方音導部２５Ｒ２における、リア音波の進行方向と直交する方向の断面積（上下方向と直交する前後方向・左右方向の断面積）は、右スピーカ保持部２３１Ｒ（右スピーカ２２Ｒ）側から右上方音波出力孔６６Ｒｈ２側に向けて、徐々に拡大する。しかし、本発明において、右側方音導部における、リア音波の進行方向に直交する方向の断面積（左右方向に直交する前後方向・上下方向の断面積）は、右スピーカ保持部（右スピーカ）側から右側方音波出力孔側に向けて、一定でもよい。同様に、右上方音導部における、リア音波の進行方向と直交する方向の断面積（上下方向と直交する前後方向・左右方向の断面積）は、右スピーカ保持部（右スピーカ）側から右上方音波出力孔側に向けて、一定でもよい。このような構成によっても、本装置１が奏するサラウンド効果は、従来の表示装置に比べて高まる。 In the embodiment described above, the cross-sectional area of the right side sound guiding portion 25R1 in the direction orthogonal to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and vertical direction orthogonal to the left-right direction) is the same as that for holding the right speaker. It gradually expands from the portion 231R (right speaker 22R) side toward the right side sound wave output hole 66Rh1 side. Similarly, the cross-sectional area of the upper right sound guiding portion 25R2 in the direction orthogonal to the traveling direction of the rear sound wave (the cross-sectional area in the front-back direction and the left-right direction orthogonal to the up-down direction) is the same as that of the right speaker holding portion 231R (right speaker 22R). It gradually expands from the side toward the upper right sound wave output hole 66Rh2 side. However, in the present invention, the cross-sectional area in the direction perpendicular to the traveling direction of the rear sound wave (the cross-sectional area in the front-rear direction and vertical direction perpendicular to the left-right direction) of the right sound guide part is the same as that of the right speaker holding part (right speaker). It may be constant from the side toward the right side sound wave output hole side. Similarly, the cross-sectional area of the upper right sound guide section in the direction perpendicular to the traveling direction of rear sound waves (the cross-sectional area in the front-rear direction and left-right direction perpendicular to the up-down direction) is from the right speaker holding part (right speaker) side to the upper right It may be constant toward the sound wave output hole side. Even with such a configuration, the surround effect produced by the present device 1 is enhanced compared to conventional display devices.
　また、以上説明した実施の形態では、フロントスピーカユニット１０とリアスピーカユニット２０とサブウーファユニット３０それぞれから出力される音波は、ステレオモードの音波であった。しかし、本発明において、各ユニットから出力される音波は、モノラルモードの音波でもよい。 Furthermore, in the embodiment described above, the sound waves output from each of the front speaker unit 10, rear speaker unit 20, and subwoofer unit 30 are stereo mode sound waves. However, in the present invention, the sound waves output from each unit may be monaural mode sound waves.
　さらに、本装置は、フロントスピーカユニットを、外部からの埃の侵入から防ぐために、フロント音波出力孔の周囲に被覆部材を備えてもよい。また、本装置は、リアスピーカユニットを、外部からの埃の侵入から防ぐために、リア音波出力孔の周囲に被覆部材を備えてもよい。 Further, the present device may include a covering member around the front sound wave output hole in order to prevent dust from entering the front speaker unit from the outside. Further, the present device may include a covering member around the rear sound wave output hole in order to prevent dust from entering the rear speaker unit from the outside.
　さらにまた、本装置は、音導部を、外部からの埃の侵入から防ぐために、音響調整孔の周囲に被覆部材を備えてもよい。 Furthermore, the present device may include a covering member around the sound adjustment hole in order to prevent dust from entering the sound guide section from the outside.
　さらにまた、右側方特性孔の上下方向に延在する長さと、右上方特性孔の左右方向に延在する長さとは、音響を特性する態様に応じて、適宜設定される。すなわち、例えば、右側方特性孔の上下方向に延在する長さは、右上方傾斜面にはかからずに、右スピーカ保持部に対応する長さでもよい。同様に、右上方特性孔の左右方向に延在する長さは、右側方傾斜面にはかからずに、右スピーカ保持部に対応する長さでもよい。この構成に対応して、第１右音響調整孔の上下方向に延在する長さは、右側方特性孔の上下方向に延在する長さと略同じ長さでよい。同様に、第２右音響調整孔の左右方向に延在する長さは、右側上方特性孔の左右方向に延在する長さと略同じ長さでよい。 Furthermore, the length of the right characteristic hole extending in the vertical direction and the length of the upper right characteristic hole extending in the left and right direction are appropriately set according to the manner in which acoustic characteristics are to be characterized. That is, for example, the length of the right side characteristic hole extending in the vertical direction may be a length that corresponds to the right speaker holding part without extending over the right upper inclined surface. Similarly, the length of the upper right characteristic hole extending in the left-right direction may be a length corresponding to the right speaker holding portion without extending over the right side inclined surface. Corresponding to this configuration, the length of the first right acoustic adjustment hole extending in the vertical direction may be approximately the same length as the length of the right side characteristic hole extending in the vertical direction. Similarly, the length of the second right acoustic adjustment hole extending in the left-right direction may be approximately the same as the length of the right upper characteristic hole extending in the left-right direction.
　さらにまた、右音響特性孔は、右側方特性孔と右上方特性孔とのうち、いずれか一方の特性孔のみで構成されてもよい。同様に、右音響調整孔は、第１右音響調整孔と第２右音響調整孔とのうち、先のいずれか一方の特性孔に対応する（連通する）調整孔のみで構成されてもよい。 Furthermore, the right acoustic characteristic hole may be composed of only one of the right side characteristic hole and the upper right characteristic hole. Similarly, the right sound adjustment hole may be comprised only of adjustment holes that correspond to (communicate with) either one of the first right sound adjustment hole and the second right sound adjustment hole. .
　さらにまた、一対の上スピーカと、一対の下スピーカそれぞれの筐体の内部における配置角度は、可変でもよい。すなわち、例えば、角度調節機構による表示部（表示面）の傾きや、聴視者の聴視位置に応じて、聴視者は、例えば、リモコンなどを用いて一対の上スピーカと、一対の下スピーカそれぞれの筐体の内部における配置角度を変えることにより、理想の音響で本装置の聴視を楽しめる。 Furthermore, the arrangement angles of the pair of upper speakers and the pair of lower speakers inside the housing may be variable. That is, for example, depending on the tilt of the display section (display surface) by the angle adjustment mechanism or the viewing position of the viewer, the viewer can use, for example, a remote control to adjust the pair of upper speakers and the pair of lower speakers. By changing the arrangement angle of each speaker inside the housing, you can enjoy listening to and viewing this device with ideal acoustics.
１　表示装置
１０　　　　フロントスピーカユニット
１１　　　　一対の上スピーカ
１１Ｒ　　　右上スピーカ
１１Ｌ　　　左上スピーカ
１２　　　　一対の下スピーカ
１２Ｒ　　　右下スピーカ
１２Ｌ　　　左下スピーカ
２０　　　　リアスピーカユニット
２１　　　　一対のリアスピーカボックス
２２Ｒ　　　右スピーカ（リアスピーカ）
２３Ｒ　　　右保持部材（保持部材）
２３Ｒ１　　右壁部（壁部）
２３Ｒ２　　右傾斜面（傾斜面）
２４Ｒ　　　右音波反射部材（音波反射部材）
２５Ｒ　　　右音導部（音導部）
２５Ｒ１　　右側方音導部（側方音導部）
２５Ｒ２　　右上方音導部（上方音導部）
２６Ｒｈ　　右音響特性孔（音響特性孔）
２６Ｒｈ１　右側方特性孔（側方音響特性孔）
２６Ｒｈ２　右上方特性孔（上方音響特性孔）
３０　　　　サブウーファユニット
４０　　　　表示部ケース（ディスプレイケース）
５０　　　　角度調節機構
５１　　　　ロッド
５２　　　　シリンダチューブ
５３　　　　モータ
６０　　　　筐体
６１　　　　上枠体
６２　　　　下枠体
６３　　　　側枠体
６４　　　　後枠体
６５ｈ　　　フロント音波出力孔
６６ｈ　　　リア音波出力孔
６６Ｒｈ　　右音波出力孔
６６Ｌｈ　　左音波出力孔
６６Ｒｈ１　右側方音波出力孔（側方音波出力孔）
６６Ｌｈ１　左側方音波出力孔（側方音波出力孔）
６６Ｒｈ２　右上方音波出力孔（上方音波出力孔）
６６Ｌｈ２　左上方音波出力孔（上方音波出力孔）
６７ｈ　　　音響調整孔
６７Ｒｈ　　右音響調整孔
６７Ｌｈ　　左音響調整孔
６７Ｒｈ１　第１右音響調整孔（第１音響調整孔）
６７Ｌｈ１　第１左音響調整孔（第１音響調整孔）
６７Ｒｈ２　第２右音響調整孔（第２音響調整孔）
６７Ｌｈ２　第２左音響調整孔（第２音響調整孔）
Ｄ　　　　　表示部（ディスプレイ） 1 Display device 10 Front speaker unit 11 Pair of upper speakers 11R Upper right speaker 11L Upper left speaker 12 Pair of lower speakers 12R Lower right speaker 12L Lower left speaker 20 Rear speaker unit 21 Pair of rear speaker boxes 22R Right speaker (rear speaker)
23R Right holding member (holding member)
23R1 Right wall part (wall part)
23R2 Right inclined surface (slanted surface)
24R Right sound wave reflecting member (sound wave reflecting member)
25R Right sound guide part (sound guide part)
25R1 Right side sound guide part (side sound guide part)
25R2 Upper right sound guide part (upper sound guide part)
26Rh Right acoustic characteristic hole (acoustic characteristic hole)
26Rh1 Right side characteristic hole (side acoustic characteristic hole)
26Rh2 Upper right characteristic hole (upper acoustic characteristic hole)
30 Subwoofer unit 40 Display case (display case)
50 Angle adjustment mechanism 51 Rod 52 Cylinder tube 53 Motor 60 Housing 61 Upper frame 62 Lower frame 63 Side frame 64 Rear frame 65h Front sound wave output hole 66h Rear sound wave output hole 66Rh Right sound wave output hole 66Lh Left sound wave output hole 66Rh1 Right side sound wave output hole (side sound wave output hole)
66Lh1 Left side sound wave output hole (side sound wave output hole)
66Rh2 Upper right sound wave output hole (upper sound wave output hole)
66Lh2 Upper left sound wave output hole (upper sound wave output hole)
67h Sound adjustment hole 67Rh Right sound adjustment hole 67Lh Left sound adjustment hole 67Rh1 1st right sound adjustment hole (1st sound adjustment hole)
67Lh1 1st left sound adjustment hole (1st sound adjustment hole)
67Rh2 2nd right sound adjustment hole (2nd sound adjustment hole)
67Lh2 2nd left sound adjustment hole (2nd sound adjustment hole)
D Display section (display)

Claims (17)

  1. 　画像が表示される表示面を備えるディスプレイと、
    　前記表示面の後方に配置されて、リア音波を出力するリアスピーカユニットと、
    を有してなり、
    　前記リアスピーカユニットは、
    　前記リア音波を反射する音波反射部材と、
    　前記音波反射部材で反射された前記リア音波を、前記リア音波が前記音波反射部材に入射する方向とは異なる方向に導く少なくとも１つの音導部と、
    を備え、
    　前記音導部に導かれた前記リア音波を、外部に放音するリア音波出力孔、
    を有してなる、
    ことを特徴とする表示装置。     a display including a display surface on which an image is displayed;
    a rear speaker unit disposed behind the display surface and outputting rear sound waves;
    It has
    The rear speaker unit is
    a sound wave reflecting member that reflects the rear sound wave;
    at least one sound guide portion that guides the rear sound waves reflected by the sound wave reflection member in a direction different from a direction in which the rear sound waves are incident on the sound wave reflection member;
    Equipped with
    a rear sound wave output hole that emits the rear sound wave guided by the sound guiding section to the outside;
    consisting of
    A display device characterized by:
  2. 　前記リアスピーカユニットは、
    　一対のリアスピーカボックス、
    を含み、
    　前記リアスピーカボックスは、
    　前記リア音波を出力するリアスピーカと、
    　前記音波反射部材と、
    　前記音導部と、
    を備える、
    請求項１記載の表示装置。     The rear speaker unit is
    A pair of rear speaker boxes,
    including;
    The rear speaker box is
    a rear speaker that outputs the rear sound wave;
    The sound wave reflecting member;
    The sound guiding section;
    Equipped with
    The display device according to claim 1.
  3. 　前記音導部の前記リア音波の進行方向と直交する方向の断面積は、前記リアスピーカ側から前記リア音波出力孔側に向けて徐々に拡大する、
    請求項２記載の表示装置。     A cross-sectional area of the sound guiding portion in a direction perpendicular to the traveling direction of the rear sound wave gradually increases from the rear speaker side toward the rear sound wave output hole side.
    The display device according to claim 2.
  4. 　前記音導部の前記リア音波の進行方向と直交する方向の断面積は、前記リアスピーカ側から前記リア音波出力孔側に向けて一定である、
    請求項２記載の表示装置。     A cross-sectional area of the sound guiding portion in a direction perpendicular to the traveling direction of the rear sound wave is constant from the rear speaker side toward the rear sound wave output hole side.
    The display device according to claim 2.
  5. 　前記音導部は、前記リアスピーカと前記リア音波出力孔との間において、前記リアスピーカ側から前記リア音波出力孔側にかけて、前記ディスプレイ側に徐々に傾斜する傾斜面を備える、
    請求項３記載の表示装置。     The sound guiding portion includes an inclined surface that gradually slopes toward the display from the rear speaker side to the rear sound wave output hole side between the rear speaker and the rear sound wave output hole.
    The display device according to claim 3.
  6. 　前記リアスピーカボックスは、
    　前記リアスピーカを保持する保持部材、
    を備え、
    　前記音導部は、前記保持部材と前記音波反射部材とで構成され、
    　前記音波反射部材は、前記ディスプレイよりも前記後方に配置され、
    　前記保持部材は、前記ディスプレイと前記音波反射部材との間に配置され、
    　前記傾斜面は、前記保持部材の一部である、
    請求項５記載の表示装置。     The rear speaker box is
    a holding member that holds the rear speaker;
    Equipped with
    The sound guiding section is composed of the holding member and the sound wave reflecting member,
    The sound wave reflecting member is arranged at the rear of the display,
    The holding member is arranged between the display and the sound wave reflecting member,
    the inclined surface is a part of the holding member;
    The display device according to claim 5.
  7. 　前記保持部材は、
    　前記傾斜面から前記後方に立設する壁部、
    を備え、
    　前記壁部は、前記リアスピーカ側から前記リア音波出力孔側にかけて、前記傾斜する方向とは異なる方向に向けて湾曲する、
    請求項６記載の表示装置。     The holding member is
    a wall portion erected rearward from the inclined surface;
    Equipped with
    The wall portion is curved in a direction different from the inclined direction from the rear speaker side to the rear sound wave output hole side.
    The display device according to claim 6.
  8. 　前記リアスピーカから前記リア音波が出力される方向は、後方向である、
    請求項２乃至７のいずれかに記載の表示装置。     The direction in which the rear sound waves are output from the rear speaker is the rear direction.
    A display device according to any one of claims 2 to 7.
  9. 　前記リアスピーカユニットを収容する筐体、
    を有してなり、
    　前記筐体は、
    　前記リア音波出力孔から放音される前記リア音波の音響を調整する音響調整孔、
    を備え、
    　前記リアスピーカボックスは、
    　前記リアスピーカを保持する保持部材と、
    　前記音響調整孔を介して前記筐体の外部と連通する音響特性孔と、
    を備え、
    　前記音響特性孔は、前記保持部材と前記音波反射部材とで構成される、
    請求項２記載の表示装置。     a housing housing the rear speaker unit;
    It has
    The casing is
    a sound adjustment hole that adjusts the sound of the rear sound wave emitted from the rear sound wave output hole;
    Equipped with
    The rear speaker box is
    a holding member that holds the rear speaker;
    an acoustic characteristic hole that communicates with the outside of the housing via the acoustic adjustment hole;
    Equipped with
    The acoustic characteristic hole is composed of the holding member and the sound wave reflecting member.
    The display device according to claim 2.
  10. 　前記ディスプレイは、側方向に延びる長辺と、前記側方向と直交する上下方向に延びる短辺と、を備える矩形であり、
    　前記音導部は、
    　前記側方向に延びる側方音導部と、
    　前記上下方向に延びる上方音導部と、
    を備え、
    　前記音響特性孔は、
    　前記側方向において、前記リアスピーカに対して前記側方音導部とは反対側に配置される側方音響特性孔と、
    　前記上下方向において、前記リアスピーカに対して前記上方音導部とは反対側に配置される上方音響特性孔と、
    を備え、
    　前記筐体は、
    　前記ディスプレイの側方に配置される側枠体と、
    　前記ディスプレイの上方に配置される上枠体と、
    　前記ディスプレイの前記後方に配置される後枠体と、
    を備え、
    　前記リア音波出力孔は、
    　前記側枠体に配置されて、前記側方音導部と連通する側方音波出力孔と、
    　前記上枠体に配置されて、前記上方音導部と連通する上方音波出力孔と、
    を備え、
    　前記音響調整孔は、
    　前記後枠体に配置されて、前記側方音響特性孔と連通する第１音響調整孔と、
    　前記後枠体に配置されて、前記上方音響特性孔と連通する第２音響調整孔と、
    を備え、
    　前記リアスピーカから出力される前記リア音波は、前記側方音波出力孔と前記上方音波出力孔それぞれから前記筐体の外部に放音される、
    請求項９記載の表示装置。     The display has a rectangular shape including a long side extending in a lateral direction and a short side extending in an up-down direction perpendicular to the lateral direction,
    The sound guiding section is
    a lateral sound guiding portion extending in the lateral direction;
    the upper sound guide portion extending in the vertical direction;
    Equipped with
    The acoustic characteristic hole is
    a lateral acoustic characteristic hole disposed on the side opposite to the lateral sound guide portion with respect to the rear speaker in the lateral direction;
    an upper acoustic characteristic hole disposed on a side opposite to the upper sound guide portion with respect to the rear speaker in the vertical direction;
    Equipped with
    The casing is
    a side frame body disposed on the side of the display;
    an upper frame body disposed above the display;
    a rear frame body disposed at the rear of the display;
    Equipped with
    The rear sound wave output hole is
    a lateral sound wave output hole disposed in the side frame body and communicating with the lateral sound guiding section;
    an upper sound wave output hole disposed in the upper frame body and communicating with the upper sound guide part;
    Equipped with
    The sound adjustment hole is
    a first acoustic adjustment hole disposed in the rear frame body and communicating with the lateral acoustic characteristic hole;
    a second acoustic adjustment hole disposed in the rear frame body and communicating with the upper acoustic characteristic hole;
    Equipped with
    The rear sound waves output from the rear speakers are emitted to the outside of the housing from the side sound wave output holes and the upper sound wave output holes, respectively.
    The display device according to claim 9.
  11. 　前記表示面の側方に配置されて、フロント音波を出力するフロントスピーカユニットと、
    　前記フロントスピーカユニットを収容する筐体と、
    を有してなり、
    　前記筐体は、
    　前記フロント音波を、前記筐体から前記表示面の前方に放音するフロント音波出力孔と、
    　前記ディスプレイの前記側方に配置される側枠体と、
    を備え、
    　前記フロント音波出力孔は、前記側枠体において前後方向に貫通する開口である、
    請求項１記載の表示装置。     a front speaker unit disposed on the side of the display surface and outputting front sound waves;
    a casing that accommodates the front speaker unit;
    It has
    The casing is
    a front sound wave output hole that emits the front sound wave from the housing to the front of the display surface;
    a side frame body disposed on the side of the display;
    Equipped with
    The front sound wave output hole is an opening that penetrates the side frame in the front-rear direction.
    The display device according to claim 1.
  12. 　前記ディスプレイは、側方向に延びる長辺と、前記側方向と直交する上下方向に延びる短辺と、を備える矩形であり、
    　前記フロントスピーカユニットは、
    　前記ディスプレイの前記短辺における中心よりも上方に配置される一対の上スピーカと、
    　前記中心よりも下方に配置される一対の下スピーカと、
    を含み、
    　前記側方は、
    　左側方と、
    　右側方と、
    を含み、
    　一対の前記上スピーカは、
    　前記ディスプレイの前記左側方に配置される左上スピーカと、
    　前記ディスプレイの前記右側方に配置される右上スピーカと、
    を含み、
    　一対の前記下スピーカは、
    　前記ディスプレイの前記左側方に配置される左下スピーカと、
    　前記ディスプレイの前記右側方に配置される右下スピーカと、
    を含む、
    請求項１１記載の表示装置。     The display has a rectangular shape including a long side extending in a lateral direction and a short side extending in an up-down direction perpendicular to the lateral direction,
    The front speaker unit is
    a pair of upper speakers arranged above the center of the short side of the display;
    a pair of lower speakers arranged below the center;
    including;
    The side is
    The left side and
    The right side and
    including;
    The pair of upper speakers are
    an upper left speaker placed on the left side of the display;
    an upper right speaker placed on the right side of the display;
    including;
    The pair of lower speakers are
    a lower left speaker placed on the left side of the display;
    a lower right speaker placed on the right side of the display;
    including,
    The display device according to claim 11.
  13. 　前記上スピーカから出力される前記フロント音波の進行方向は、前記下スピーカから出力される前記フロント音波の進行方向と異なる、
    請求項１２記載の表示装置。     The traveling direction of the front sound wave output from the upper speaker is different from the traveling direction of the front sound wave output from the lower speaker.
    The display device according to claim 12.
  14. 　前記下スピーカから出力される前記フロント音波の進行方向は、前記表示面の面内方向に対して垂直である、
    請求項１３記載の表示装置。     The traveling direction of the front sound wave output from the lower speaker is perpendicular to the in-plane direction of the display surface.
    The display device according to claim 13.
  15. 　前記上スピーカから出力される前記フロント音波の進行方向は、前記表示装置が載置される載置面に対して水平である、
    請求項１４記載の表示装置。     The traveling direction of the front sound wave output from the upper speaker is horizontal to a mounting surface on which the display device is mounted.
    The display device according to claim 14.
  16. 　前記上スピーカと前記下スピーカそれぞれの前記筐体の内部における配置角度は、可変である、
    請求項１５記載の表示装置。     The arrangement angles of the upper speaker and the lower speaker inside the housing are variable;
    The display device according to claim 15.
  17. 　前記ディスプレイは、側方向に延びる長辺と、前記側方向と直交する上下方向に延びる短辺と、を備える矩形であり、
    　前記ディスプレイの前記上下方向に対するチルト角を調節可能な角度調節機構と、
    　前記ディスプレイを支持するディスプレイケースと、
    を有してなり、
    　前記角度調節機構は、
    　前記ディスプレイケースに連結されるロッドと、
    　前記ロッドを進退可能に収容するシリンダチューブと、
    を備え、
    　前記ロッドの進退により生じる前記ディスプレイケースに対する押引力で、前記チルト角を変更する、
    請求項１記載の表示装置。     The display has a rectangular shape including a long side extending in a lateral direction and a short side extending in an up-down direction perpendicular to the lateral direction,
    an angle adjustment mechanism capable of adjusting a tilt angle of the display in the vertical direction;
    a display case that supports the display;
    It has
    The angle adjustment mechanism is
    a rod connected to the display case;
    a cylinder tube that accommodates the rod in a movable manner;
    Equipped with
    changing the tilt angle by a push/pull force on the display case caused by moving the rod back and forth;
    The display device according to claim 1.
PCT/JP2022/023017 2022-06-07 2022-06-07 Display device WO2023238256A1 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107874U (en) * 1989-11-07 1991-11-06
JPH08331685A (en) * 1995-05-26 1996-12-13 Sanyo Electric Co Ltd Speaker device and television receiver using this
US20090278006A1 (en) * 2008-05-08 2009-11-12 Samsung Electronics Co., Ltd. Lifting device for display apparatus
JP2011139017A (en) * 2009-12-31 2011-07-14 Sutech Trading Ltd Slide-type electronic device
US20210200264A1 (en) * 2019-12-31 2021-07-01 Samsung Electronics Co., Ltd. Display apparatus and sound outputting method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03107874U (en) * 1989-11-07 1991-11-06
JPH08331685A (en) * 1995-05-26 1996-12-13 Sanyo Electric Co Ltd Speaker device and television receiver using this
US20090278006A1 (en) * 2008-05-08 2009-11-12 Samsung Electronics Co., Ltd. Lifting device for display apparatus
JP2011139017A (en) * 2009-12-31 2011-07-14 Sutech Trading Ltd Slide-type electronic device
US20210200264A1 (en) * 2019-12-31 2021-07-01 Samsung Electronics Co., Ltd. Display apparatus and sound outputting method thereof

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