JP2008211381A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact display device which prevents increase in outside dimensions resulting from installation of a speaker unit. <P>SOLUTION: The speaker unit 1 is installed downward in a back face of a panel unit 3. And, a sound emitting plane of the speaker unit 1 is composed so as to be nearly perpendicular to a back face of the panel unit 3. And a slit 21 also used for heat dissipation of the panel unit 3, is formed near the speaker unit 1 of a back cabinet 2. Voice from the speaker unit 1 is output from louvers 23 prepared in the slit 21. The louvers 23 composed of a plurality of plates, incline towards a front face side of the panel unit 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display device that displays an image, and more particularly to a display device in which a speaker unit is provided on the back surface of a panel unit.

  Many display devices called so-called thin televisions, such as a liquid crystal display or a plasma display, have a speaker integrally attached thereto. This integrated speaker is attached to the lower two places on the lower side of the display panel, the upper two places, or two places on the left and right of the middle stage, and can enjoy sound as well as video.

By the way, when such an integrated speaker is attached to the periphery of the display panel, the external size in the vertical or horizontal direction of the apparatus increases only at the speaker mounting portion. A technique for solving such a problem and reducing the size is disclosed (for example, see Patent Document 1). Patent Document 1 attempts to reduce the size by overlapping a part of the speaker on the back side of the display panel.
JP 2006-319723 A

  However, the technique described in Patent Document 1 has a limit on miniaturization, and there is a problem that sound from a speaker hits the display panel and the display panel vibrates. In recent years, the display panel has been increased in size, and as a result, the speaker has also been increased in size. As a result, the problem of gradually increasing the external dimensions in the vertical and horizontal directions has become apparent.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a speaker unit on the back of the panel unit, a sound emitting surface substantially perpendicular to the back of the panel unit, and a louver provided in the opening. Accordingly, it is an object of the present invention to provide a display device capable of realizing a reduction in size by outputting an audio signal and preventing an increase in outer dimensions due to the attachment of a speaker unit.

  Another object of the present invention is that the speaker unit is provided on the rear surface of the panel unit, the sound output surface is the rear side, and the sound is output from the opening through the reflection plate inside the housing, resulting in the attachment of the speaker unit. An object of the present invention is to provide a display device that can prevent downsizing and increase the size of the display device.

  Another object of the present invention is to provide a display device capable of reducing the vibration of the speaker relative to the panel unit by attaching the speaker unit to the panel unit via a buffer member.

  Another object of the present invention is to provide a display device capable of outputting a more reproducible sound while ensuring miniaturization by outputting sound from a second speaker having a different sound range through an opening on the front surface of the housing. It is to provide.

  Another object of the present invention is to provide a display device capable of outputting sound with a high reproducibility by opening a part of an enclosure and outputting sound.

  The display device according to the present invention includes a panel unit that displays an image, a speaker unit that is provided on the rear surface of the panel unit, and whose sound emitting surface is substantially perpendicular to the rear surface of the panel unit, and the panel unit and the speaker unit. A housing for housing the housing, an opening formed in the housing in the vicinity of the speaker unit, and a louver provided in the opening.

  In the display device according to the present invention, the louver is inclined toward the front side of the panel portion.

  The display device according to the present invention is characterized in that the louver is constructed of a plurality of plates that are installed in the opening and are inclined toward the front side of the panel unit.

  A display device according to the present invention accommodates a panel unit that displays an image, a speaker unit that is provided on the back surface of the panel unit, and an angle formed by the back surface and the sound emitting surface is an acute angle, and the panel unit and the speaker unit. And an opening formed in the vicinity of the speaker unit of the casing, and a louver provided in the opening.

  A display device according to the present invention accommodates a panel unit that displays an image, a speaker unit that is provided on the back surface of the panel unit, and an angle formed by the back surface and the sound emitting surface is an acute angle, and the panel unit and the speaker unit. And a reflection plate projecting from the inner wall of the housing in the vicinity of the speaker unit, and an opening formed in the housing in the vicinity of the speaker unit.

  A display device according to the present invention includes a panel unit that displays an image, a speaker unit that is provided on the back surface of the panel unit and whose sound output direction is opposite to the front of the panel unit, and the panel unit and the speaker unit. It is characterized by comprising a housing to be accommodated, a reflector projecting on the inner wall of the housing in the vicinity of the speaker unit, and an opening formed in the housing in the vicinity of the speaker unit.

  The display device according to the present invention is characterized in that the speaker units are provided at two places on the left and right sides on the lower side of the rear surface of the panel unit.

  The display device according to the present invention is characterized in that the speaker units are provided at two places on the upper left and right sides of the back of the panel unit.

  The display device according to the present invention is characterized in that the speaker units are provided at two locations near the center of the left corner and the right corner on the back of the panel unit.

  The display device according to the present invention includes a buffer member that is attached to absorb vibration transmitted from the speaker unit to the panel unit.

  In the display device according to the present invention, the speaker unit includes a first speaker and an enclosure that accommodates the first speaker, a second opening that opens in the housing on the front side of the panel unit, and the second opening. And a second speaker having a different sound range from the first speaker that outputs sound through the unit.

  The display device according to the present invention further includes a third opening that opens in the enclosure.

  The display device according to the present invention includes a fourth opening that opens to the housing on the front side of the panel portion, and a tubular connecting pipe that connects the third opening and the fourth opening. And

  In the present invention, the panel section inside the housing displays an image. The speaker unit is provided on the back surface of the panel unit. And the sound emission surface of a speaker unit is comprised so that it may become substantially perpendicular | vertical with respect to the back surface of a panel part. And the opening part which also serves as heat dissipation of a panel part is formed in the speaker unit vicinity of a housing | casing. The sound from the speaker unit is output from a louver provided in the opening. What is necessary is just to incline this louver toward the front side of a panel part. This speaker unit is provided at two places on the left and right sides on the lower side or upper side of the rear surface of the panel unit. Or this speaker unit is provided in two places near the approximate center of the left corner and the right corner of the panel unit back surface.

  In the present invention, the louver is installed in the opening. Moreover, the louver comprised from several board inclines toward the front side of a panel part.

  In the present invention, the speaker unit is provided on the rear surface of the panel unit, and the angle formed by the rear surface and the sound emitting surface is an acute angle smaller than 90 degrees. In this case as well, sound is output from the louver provided in the opening. Further, when the sound output direction is opposite to the front surface of the panel unit, a reflector is projected from the inner wall of the housing in the vicinity of the speaker unit. In this case, the sound is reflected by the reflecting plate, and the sound is output through an opening formed in the housing near the speaker unit.

  In the present invention, the buffer member is attached to absorb vibration from the speaker unit to the panel unit.

  In the present invention, the speaker unit includes a first speaker and an enclosure for accommodating the first speaker. Furthermore, a second speaker having a different sound range from the first speaker is prepared. A second opening that opens in the housing is provided on the front side of the panel unit, and sound is output from the second speaker through the second opening.

  In this invention, the 3rd opening part opened to an enclosure is provided. A low frequency sound is output from the third opening.

  In this invention, the 4th opening part opened to a housing | casing is provided in the panel front side. And a tubular connection pipe is connected between the 3rd opening and the 4th opening. Low-frequency sound is output to the front side through the connecting pipe.

  In the present invention, the speaker unit is provided on the back surface of the panel unit. And the sound emission surface of a speaker unit is comprised so that it may become substantially perpendicular | vertical with respect to the back surface of a panel part. And the audio | voice from a speaker unit is output from the louver provided in an opening part. Thereby, since the speaker unit does not affect the increase in the vertical or horizontal outer dimensions, the display device can be reduced in size. In addition, since the louver is provided in the opening portion that also serves as heat dissipation and the sound is output, the sound is appropriately transmitted to the user.

  In the present invention, the louver is installed in the opening, and the louver composed of a plurality of plates is inclined toward the front side of the panel unit. Thereby, it becomes possible to transmit the sound from the speaker unit to the viewer side by the inclination to the front side of the louver while maintaining the heat dissipation function.

  In the present invention, the speaker unit is provided on the rear surface of the panel unit, and the angle formed by the rear surface and the sound emitting surface is an acute angle smaller than 90 degrees. In this case as well, sound is output from the louver provided in the opening. Furthermore, when the sound output direction is opposite to the front surface of the panel unit, a reflector is projected from the inner wall of the housing in the vicinity of the speaker unit. In this case, the sound is reflected by the reflecting plate, and the sound is output through an opening formed in the housing near the speaker unit. Thus, it is possible to install a speaker freely according to the acoustic setting, such as installing backward.

  In the present invention, the buffer member is attached to absorb vibration from the speaker unit to the panel unit. Thereby, even when the volume increases, it is possible to avoid a situation in which the panel portion vibrates.

  In the present invention, the speaker unit includes a first speaker and an enclosure for accommodating the first speaker. Furthermore, a second speaker having a different sound range from the first speaker is prepared. A second opening that opens in the housing is provided on the front side of the panel unit, and sound is output from the second speaker through the second opening. This makes it possible to reproduce sound such as high sounds without increasing the vertical or horizontal external dimensions.

  In the present invention, a low-frequency sound is output from the third opening that opens in the enclosure. Thereby, it becomes possible to improve reproducibility while achieving size reduction.

  In the present invention, the tubular connecting pipe is connected between the third opening and the fourth opening. Low-frequency sound is output to the front side through the connecting pipe. As a result, the present invention has an excellent effect, for example, it is possible to effectively utilize the space of the housing and to realize a more compact sound while reproducing a more powerful sound.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view showing an assembled state of the display device. The display device includes a front housing (hereinafter referred to as a front cabinet) 4, a rear housing (hereinafter referred to as a back cabinet) 2, a panel unit 3 interposed between the front cabinet 4 and the back cabinet 2, and a speaker unit. 1 and 1 are comprised. In the following description, the display device is described as being a liquid crystal display, but may be another thin display such as a plasma display, an organic EL (electroluminescence) display, or a surface-conduction electron-emitter display (SED).

  A rectangular panel unit 3 for displaying an image on the front side includes a liquid crystal substrate, a holding frame for holding the liquid crystal substrate, an optical sheet disposed on the back surface of the liquid crystal substrate, and a plurality of fluorescent tubes disposed on the back surface of the optical sheet. A backlight backlight 33 to be held and a rectangular backlight shield 33 covering the backlight holder (both not shown) are superposed. On the back surface of the backlight shield 33, electrical components 31, 31... Such as a circuit board and a power supply board are attached. Speaker units 1 and 1 are attached to the left and right two locations on the lower back side of the backlight shield 33.

  As will be described later, the sound emitting surface of the speaker unit 1 is attached so as to be substantially perpendicular to the plane related to the back surface of the backlight shield 33, and the sound from the speaker unit 1 is output downward. The front cabinet 4 provided on the front surface of the display device has a rectangular opening having an area slightly smaller than the area of the panel unit 3 in a front view. A frame having an L-shaped cross section is formed so as to cover the four sides of the opening. Locking means (not shown) is provided at the four corners of the front cabinet 4, and the panel unit 3 is fixed to the front cabinet 4 with screws or the like.

  The back cabinet 2 has a rectangular shape in plan view and a dish shape having a predetermined depth so as to cover the speaker units 1, 1 and the electrical components 31, 31... Having a predetermined height. The front surface of the back cabinet 2 has an opening having an area larger than the area of the panel portion 3 in a front view. The back cabinet 2 is attached to the front cabinet 4 with the panel portion 3 interposed therebetween. In this way, the panel unit 3 with the speaker unit 1 attached to the back surface is accommodated between the front cabinet 4 and the back cabinet 2.

  FIG. 2 is a perspective view showing an attachment state of the speaker unit 1, and FIG. 3 is a schematic perspective view showing an attachment state of the angle. Speaker units 1 and 1 are attached at two positions on the lower right side of the back side of the backlight shield 33 at symmetrical positions when viewed from the center of the panel portion 3. The reference numerals of the back speaker unit 1 are omitted as appropriate. The speaker unit 1 is attached to the backlight shield 33 with an angle 5 interposed.

  As shown in FIG. 3, the tray-shaped angle 5 includes a flat plate portion 51, side plate portions 52 and 52, flange portions 55 and 55, screw holes 56, 56, 56 and 56, and through holes 53, 53, 53 and 53. Consists of including. Side plate portions 52, 52 project from both side ends of a rectangular flat plate portion 51 extending on the same plane as the back surface of the panel portion 3. The protruding direction of the side plate portion 52 whose one end is supported by the flat plate portion 51 is a direction that is substantially perpendicular to the flat plate portion 51. At the other end of the side plate portion 52, a rectangular flange portion 55 extends substantially parallel to the flat plate portion 51. Screw holes 56 and 56 for fixing the speaker unit 1 are provided at two locations on the upper and lower portions of the flange portion 55. Through holes 53, 53, 53, 53 for passing screws 54, 54, 54, 54 are provided at the four corners of the flat plate portion 51.

  On the back surface of the backlight shield 33, four screw holes 32, 32, 32, 32 are formed at positions corresponding to the through holes 53, 53, 53, 53. When attaching the angle 5, the center of the through holes 53, 53, 53, 53 is aligned with the center of the screw holes 32, 32, 32, 32 of the backlight shield 33, and the screws 54, 54, 54, 54 are screwed. Match. In the present embodiment, the embodiment has been described in which the angle 5 is attached to the back surface of the backlight shield 33 by screwing the screw 54 and the screw hole 32. However, the angle 5 is fixed by an appropriate locking means such as an adhesive or a hook. What should I do?

  As shown in FIG. 2, the speaker unit 1 includes an enclosure 14, a speaker 11, a guide plate 111, a second speaker 12, a third speaker 13, a third opening 143, a duct 131 as a connecting pipe, and hooks 146, 146, and 146. 146 and the like. The enclosure 14 that houses the speaker 11 has a hollow rectangular parallelepiped shape, and is fixed to the back surface of the backlight shield 33 via the angle 5. U-shaped hooks 146 and 146 having a U-shape in a plan view project in parallel with the extending direction of the flange portion 55 on the left and right in the vicinity of the middle stage of the side surface 142 of the enclosure 14. The hooks 146 are provided at two places on the left side 142 and two places on the right side 142, for a total of four places, and dumbbell-shaped rubber bushes (buffer members) 56B, 56B, 56B, 56B covered with rubber. It is locked to.

  When the enclosure 14 is attached to the angle 5, the rubber bush 56 </ b> B is locked to the hook 146. Then, the enclosure 14 is placed on the flange portion 55 of the angle 5 so that the central axis of the rubber bush 56B coincides with the center of the screw hole 56 of the flange portion 55. Next, a screw (not shown) is passed through the inside of the rubber bush 56B from the back side to the front side of the panel part 3 and screwed into the screw hole 56 on the flange part 55, so that the angle 5 is moved onto the flange part 55. Fixing is complete. In this case, the bottom surface of the enclosure 14 is separated from the flat plate portion 51 of the angle 5. Thereby, the vibration by the speaker 11 is absorbed by the rubber bush 56B.

  In this embodiment, the example in which the rubber bush 56B is used as the buffer member has been described. However, the present invention is not limited to this. For example, instead of the rubber bush 56B, a donut-shaped gel or the like may be inserted between the lower surface of the hook 146 and the flange portion 55. In addition, rubber, sponge or the like is attached to the flange portion 55, the side plate portion 52 and the flat plate portion 51 of the angle 5 with an adhesive, and the speaker unit 1 is fixed in a state of being in direct contact with the flat plate portion 51 and the flange portion 55 or the like. You may do it. In addition, the hook 146 may be used as a buffer member and may be formed of an elastic resin or the like. Further, in the present embodiment, the lower side of the speaker unit 1 is attached so as to protrude a predetermined length from the lower side of the backlight shield 33, but the speaker unit 1 may be attached at an appropriate position above this. good.

  A speaker 11 is attached downward near the center of the bottom surface 141 of the enclosure 14. The speaker 11 has a sound emitting surface that is substantially perpendicular to a plane related to the back surface of the panel unit 3, and the sound is output downward. On left and right sides of the speaker 11 on the bottom surface 141 of the enclosure 14, guide plates 111, 111 for guiding the sound downward are projected toward the lower side of the enclosure 14. The guide plate 111 has a rectangular shape and is extended so that the longitudinal direction thereof is the same as a slit to be described later. The sound from the speaker 11 whose sound emitting surface is substantially perpendicular to the plane related to the back surface of the panel unit 3 is output downward according to the guidance of the guide plate 111. In the vicinity of the speaker unit 1 on the lower long side of the front cabinet 4, a plurality of discharge holes 41 for guiding sound from the speakers 11 to the front side of the front cabinet 4 are formed.

  In the present embodiment, the speaker 11 uses a mid range scorker, and in addition, a second speaker 12 and a third speaker 13 having different sound ranges are provided. In the following description, it is assumed that the second speaker 12 is a high-frequency tweeter 12 and the third speaker 13 is a low-frequency woofer 13. Note that the tweeter 12 and the woofer 13 are not necessarily provided, and a full-range speaker may be adopted as the speaker 11. Further, the combination of the above-described speakers is merely an example, and if the sound range is different, a subwoofer for the super low range, a super tweeter for the super high range, a mid bass for the mid and low range may be appropriately combined.

  The tweeter 12 is fixed to the lower left and right two places of the panel unit 3 on the rear surface of the front cabinet 4. Second openings (hereinafter referred to as tweeter openings) 42 and 42 are formed at two places on the lower side of the long side of the front cabinet 4, and the tweeter 12 has a voice in front through the tweeter opening 42. It is fixed to the front so that it can be output to the side. FIG. 4 is a perspective view showing the lower side of the display device. A recess 45 extending in the longitudinal direction is formed on the lower side of the front cabinet 4 with respect to the front surface of the panel unit 3. The recess 45 has an opening on the front side of the front cabinet 4 and is recessed toward the back side from the plane formed by the front surface of the front cabinet 4.

  A tweeter opening 42 is formed in the concave portion 45 at the front right corner of the front cabinet 4, and a discharge hole 41 for outputting sound from the speaker 11 to the front side is formed on the left side. A later-described fourth opening (hereinafter referred to as a woofer opening 44) is formed. The discharge holes 41, 41,... Made up of a plurality of holes are punched in a honeycomb shape in the longitudinal direction of the recess 45 of the front cabinet 4. Although not shown, a tweeter opening 42, a discharge hole 41, and a woofer opening 44 are similarly formed from the left side to the center on the left side that is symmetrical with these. As shown in FIG. 2, locking portions 46, 46,..., Each having a screw hole formed at the center, project from the front side to the back side at appropriate locations on the front cabinet 4. The back cabinet 2 is overlaid on the front cabinet 4, screws (not shown) are inserted from the back side of the back cabinet 2, and screwed into the locking portion 46 to complete the attachment.

  FIG. 5 is a cross-sectional view showing a cross section of the woofer 13. The speaker unit 1 is a so-called bass reflex type in which a low frequency resonance duct 131 is attached to a part of a sealed enclosure 14. A third opening 143 is provided at the corner of the bottom surface 141 of the enclosure 14. One end of a J-shaped tubular duct 131 having a sectional view is inserted into the enclosure 14. The duct 131 protrudes from the bottom surface 141, extends from the back side of the front cabinet 4 toward the front side by approximately 90 degrees, and the other end faces the woofer opening 44.

  The bass in the enclosure 14 is directed toward the concave portion 45 of the front cabinet 4 through the duct 131 and is output from the woofer opening 44 toward the front side of the panel portion 3. In this embodiment, the duct 131 of the woofer 13 is described as being output from the woofer opening 44 located on the front side of the front cabinet 4. However, the other end of the duct 131 faces downward as in the speaker 11. And may be output in a downward direction that is the same direction as the speaker 11. In addition, sound may be output downward from the woofer opening 44 in the same manner as the speaker 11 without using the duct 131.

  6 is a longitudinal sectional view showing a longitudinal section in the vicinity of the speaker 11 of the display device, FIG. 7 is a schematic perspective view showing the bottom surface of the display device, and FIG. 8 is an enlarged sectional view showing details of the cross section of the louver. The speaker 11 is attached to the enclosure 14 so that its sound emitting surface is substantially perpendicular to the plane formed by the back surface of the panel unit 3, that is, the sound output direction is downward. The speaker 11 includes a yoke 112, a magnet 113, a frame 114, a damper 117, a diaphragm 110, and an edge 115. A yoke 112 passes through the doughnut-shaped magnet 113, and a skirt-shaped frame 114 is provided downwardly below these.

  A damper 117 is installed on the upper side of the frame 114, and an edge 115 having a semicircular cross-sectional view is provided downward at the tip of the frame 114. A dish-like diaphragm 110 is attached to the inner peripheral side of the edge 115 that is annular when viewed from the bottom in a state of opening downward. The diaphragm 110 having a circular shape when viewed from the bottom has a shape in which the opening diameter gradually increases toward the lower side. In the present embodiment, the description will be made assuming that the same plane as the opening surface having the largest diameter of the dish-shaped diaphragm 110 is the sound emitting surface. The periphery of the speaker unit 1 attached to the back surface of the panel unit 3 is covered with a front cabinet 4 and a back cabinet 2.

  As shown in FIG. 6, the bottom surface of the back cabinet 2 is inclined at a predetermined angle with respect to a plane formed by the back surface of the panel unit 3 so as to be smaller than 90 degrees. The bottom surface of the back cabinet 2 may be parallel to the sound emitting surface, that is, substantially perpendicular to the plane formed by the back surface of the panel unit 3. On the bottom surface of the back cabinet 2, a plurality of openings (hereinafter referred to as slits) 21, 21,... Serving both for heat dissipation and sound emission are formed in a direction from the front side to the back side of the panel unit 3. That is, when viewed from the bottom, a plurality of slits 21, 21,... The slits 21, 21,... Are provided in a lattice shape between the frames 22, 22,.

  At the lower position of the speaker 11 on the bottom surface of the back cabinet 2, louvers 23, 23,. The louver 23 is a rectangular flat plate extending in the same direction as the longitudinal direction of the back surface of the panel unit 3, and one side of the long side is constructed on the bottom surface of the back cabinet 2 in a direction intersecting the slit 21. . In a cross-sectional view, the louver 23 is inclined in a direction toward the front side of the panel unit 3 from one side of the long side toward the other side of the long side. The inclination angle of the louver 23 with respect to the bottom surface of the back cabinet 2 may be set to about 30 degrees, for example. As shown in FIG. 7, the frames 22, 22,... Are formed with slits 21, 21,. ··· is formed in a lattice shape.

  The sound from the diaphragm 110 of the speaker 11 is output in a direction perpendicular to the sound emitting surface. The sound is directed to the bottom surface of the back cabinet 2, reflected by the inclined surfaces of the louvers 23, 23,... Through the slits 21, 21,. Is output. The slit 21, the frame 22, and the louver 23 described above are also provided at the symmetrical position on the bottom surface of the back cabinet 2 for sound emission of the other speaker 11. Further, as shown in FIG. 2, part of the sound from the speaker 11 is also emitted from the emission hole 41. The louver 23 may have a trapezoidal shape in the bottom view as shown in FIG. The trapezoidal louver 23 is formed in a tapered shape that becomes narrower toward the left and right corners on the bottom surface of the back cabinet 2. That is, the reflection surface of the louver 23 is configured such that the center side of the bottom surface of the back cabinet 2 is larger than the left and right end sides. In this case, the sound from the speaker 11 is output toward the center near the front side of the panel unit 3.

Embodiment 2
The second embodiment relates to a form in which the sound emitting surface is inclined. FIG. 9 is a longitudinal sectional view showing a longitudinal section in the vicinity of the speaker 11 according to the second embodiment. The speaker 11 is attached so that the output direction of the sound is not downward but inclined rearward. As shown in FIG. 9, the speaker 11 is tilted so that the angle between the sound emitting surface of the speaker 11 and the plane related to the back surface of the panel unit 3 on the center side of the display device is smaller than 90 degrees (acute angle). It is attached. For example, it may be about 80 degrees. The side surface of the frame 114 of the speaker 11 is held by the bottom surface of the enclosure 14 so that the speaker 11 is inclined.

  In this case, the sound emitting surface which is the opening surface where the diameter of the dish-shaped diaphragm 110 is the widest is an acute angle with respect to the plane related to the back surface of the panel unit 3. As in the first embodiment, the sound from the speaker 11 is output perpendicular to the sound emitting surface. And the sound which goes to the back cabinet 2 bottom face is reflected by the louvers 23, 23, ... through the slits 21, 21, .... The sound reflected by the louver 23 is emitted toward the front side of the panel unit 3. In the present embodiment, the example in which the speaker 11 is tilted has been described. However, the speaker unit 1 itself may be tilted. Even in this case, the sound from the speaker 11 is reflected by the louver 23, and the reflected sound is emitted toward the front side of the panel unit 3.

  The second embodiment is configured as described above, and the other configurations and operations are the same as those of the first embodiment. Therefore, corresponding parts are denoted by the same reference numerals, and detailed description thereof is omitted.

Embodiment 3
The third embodiment relates to a form in which the speaker unit 1 is attached to the upper left and right two places on the back of the panel unit 3. FIG. 10 is a schematic perspective view showing an assembled state of the display device according to the third embodiment, and FIG. 11 is a longitudinal sectional view showing a vertical section in the vicinity of the speaker 11 according to the third embodiment. The speaker units 1 and 1 are attached to the left and right upper two places on the backlight shield 33 which is the back surface of the panel unit 3. The speaker 11 is attached to the enclosure 14 upward so that sound is output upward. As shown in FIG. 11, the sound emitting surface of the speaker 11 is attached so as to be substantially perpendicular to the plane related to the back surface of the panel unit 3.

  In the vicinity of the speaker 11 on the upper side of the back cabinet 2, slits 21, 21, ..., frames 22, 22, ... and louvers 23, 23, ... are provided. The slit 21 is provided from the front side to the back side in a direction intersecting the back surface of the panel unit 3. A louver 23 is installed in a direction facing the speaker 11 on the upper surface of the back cabinet 2 in a direction crossing the slit 21. The louver 23 is a rectangular flat plate extending in the longitudinal direction of the back cabinet 2 as in the first embodiment, and one long side is attached to the upper surface of the back cabinet 2. In a cross-sectional view, the louver 23 is inclined in a direction toward the front side of the panel unit 3 from one side of the long side toward the other side of the long side. The inclination angle of the louver 23 with respect to the upper surface of the back cabinet 2 may be set to about 30 degrees, for example. Although not shown, the enclosure 14 may be attached via the angle 5.

  As shown in FIG. 11, the sound from the speaker 11 is output vertically above the sound emitting surface. And the sound which goes to the upper surface of the back cabinet 2 is reflected by the louvers 23, 23, ... through the slits 21, 21, .... The sound reflected by the louver 23 is emitted toward the front side of the panel unit 3. A third opening 143 for the woofer 13 is provided on the upper surface of the enclosure 14, and a duct 131 protrudes upward from the third opening 143. The protruding duct 131 bends 90 degrees toward the front side of the panel unit 3 and extends for a predetermined length from the back side toward the front side. On the upper long side of the front cabinet 4, woofer openings 44, 44 are provided at symmetrical positions, and tweeter openings 42, 42 are provided at symmetrical positions outside these. As in the first embodiment, the discharge hole 41 may be formed between the woofer opening 44 and the tweeter opening 42.

  The panel portion 3 is attached to the front cabinet 4 so that the other end of the duct 131 coincides with the woofer opening 44. The tweeters 12 and 12 are attached to the inner wall of the upper long side of the front cabinet 4 at symmetrical positions. The sound is output from the tweeter 12 so that the sound is output from the tweeter opening 42. The sound from the tweeter 12 and the woofer 13 is output from the tweeter opening 42 and the woofer opening 44 on the front upper side of the front cabinet 4, respectively.

  The third embodiment is configured as described above, and the other configurations and operations are the same as those of the first and second embodiments. Therefore, corresponding parts are denoted by the same reference numerals, and detailed description thereof is omitted. To do.

Embodiment 4
The fourth embodiment relates to a mode in which the speaker unit 1 is provided at two locations near the center of the left corner and the right corner of the back surface of the panel unit 3. FIG. 12 is a schematic perspective view showing an assembled state of the display device according to the fourth embodiment, and FIG. 13 is a cross-sectional view showing a cross section in the vicinity of the speaker 11 according to the fourth embodiment. The speaker units 1 and 1 are respectively attached at two locations near the center of the left and right corners on the backlight shield 33 which is the back surface of the panel unit 3. The speaker 11 is attached to the enclosure 14 sideways so that sound is output to the side. As shown in FIG. 13, the sound emitting surface of the speaker 11 is attached so as to be substantially perpendicular to the plane related to the back surface of the panel unit 3.

  In the vicinity of the speaker 11 on the side of the back cabinet 2, slits 21, 21,..., Frames 22, 22,. The slit 21 is provided from the front side to the back side in a direction intersecting the back surface of the panel unit 3. A louver 23 is installed at a position facing the speaker 11 on the side of the back cabinet 2 in a direction intersecting with the slit 21. The louver 23 is a rectangular flat plate extending in the longitudinal direction of the side surface of the back cabinet 2 as in the first embodiment, and one long side is attached to the side surface of the back cabinet 2. In a cross-sectional view, the louver 23 is inclined in a direction toward the front side of the panel unit 3 from one side of the long side toward the other side of the long side. The inclination angle of the louver 23 with respect to the side surface of the back cabinet 2 may be about 30 degrees, for example. Although not shown, the enclosure 14 may be attached via the angle 5.

  The sound from the speaker 11 is output perpendicular to the sound emitting surface. And the sound which goes to the back cabinet 2 side surface is reflected by the louvers 23, 23, ... through the slits 21, 21, .... The sound reflected by the louver 23 is emitted toward the front side of the panel unit 3. A third opening 143 for the woofer 13 is provided on the side surface of the enclosure 14, and a duct 131 projects from the third opening 143 to the side. The protruding duct 131 bends 90 degrees toward the front side of the panel unit 3 and extends for a predetermined length from the back side toward the front side. On each short side of the front cabinet 4, woofer openings 44, 44 are provided at symmetrical positions. At the upper symmetrical positions, the tweeter openings 42, 42 are located on the short side of the front cabinet 4, respectively. Is provided. As in the first embodiment, the discharge hole 41 may be formed between the woofer opening 44 and the tweeter opening 42.

  The panel portion 3 is attached to the front cabinet 4 so that the other end of the duct 131 coincides with the woofer opening 44. The tweeters 12 and 12 are attached to the inner wall of the short side of the front cabinet 4 at symmetrical positions. The sound is output from the tweeter 12 so that the sound is output from the tweeter opening 42. Audio from the tweeter 12 and the woofer 13 is output from the tweeter opening 42 and the woofer opening 44 on the left and right short sides of the front cabinet 4 respectively.

  The fourth embodiment is configured as described above, and the other configurations and operations are the same as those of the first to third embodiments. Therefore, the corresponding parts are denoted by the same reference numerals and detailed description thereof is omitted. To do.

Embodiment 5
The fifth embodiment relates to a form in which the speaker 11 is inclined backward. FIG. 14 is a longitudinal sectional view showing a longitudinal section in the vicinity of the speaker 11 according to the fifth embodiment. As in the first embodiment, the enclosure 14 of the speaker unit 1 is mounted on the backlight shield 33 at the lower back of the panel unit 3. In the first embodiment, the enclosure 14 is provided so that the sound output direction of the speaker 11 is directed downward. However, in the fifth embodiment, the speaker 11 has the back surface 26 and the bottom surface 27 of the back cabinet 2 whose sound is obliquely rearward. Are provided so as to be output toward the inclined surface 25. The inner surfaces of the back surface 26, the bottom surface 27, and the inclined surface 25 constitute the inner wall of the back cabinet 2.

  As shown in FIG. 14, the speaker 11 is attached so that the angle formed by the sound emitting surface of the speaker 11 and the plane formed by the back surface of the panel unit 3 on the center side of the display device is an acute angle. In this case, the sound emitting surface which is the opening surface where the diameter of the dish-shaped diaphragm 110 is the widest is an acute angle with respect to the plane related to the back surface of the panel unit 3. This may be about 30 degrees, for example. The side surface of the frame 114 of the speaker 11 is held by the enclosure 14 so that the speaker 11 is inclined. The back cabinet 2 includes a back surface 26, a bottom surface 27, an inclined surface 25, and a reflection plate 24.

  Between the back surface 26 and the bottom surface 27 of the back cabinet 2, a rectangular inclined surface 25 that is substantially parallel to the sound emitting surface in a sectional view is formed. .. Are formed on the inner wall of the inclined surface 25 in the vicinity of the speaker 11 so as to protrude at a predetermined angle with respect to the inclined surface. A slit 21 serving as both heat dissipation and sound emission is formed at one end of the bottom surface 27 near the inclined surface 25. FIG. 15 is a schematic perspective view showing the bottom surface of the display device according to the fifth embodiment. The slits 21, 21,... Are formed in a lattice shape by the frames 22, 22,. The reflecting plate 24 has a rectangular shape extending in the longitudinal direction of the inclined surface 25, and the sound reflected by the reflecting plate 24 passes through slits 21, 21,. Is output.

  As shown in FIG. 14, the reflection plate 24 protruding from the inclined surface 25 may be at an angle such that sound from the speaker 11 is output through the slit 21 due to reflection of the reflection plate 24. For example, the angle in the sectional view formed by the inclined surface 25 and the reflecting plate 24 may be about 120 degrees. In this case, the sound reflected by the reflecting plate 24 is output toward the lower side of the front cabinet 4 from the slit 21 formed on the bottom surface, and is emitted toward the front side of the panel unit 3. The speaker unit 1, the inclined surface 25, the reflecting plate 24, and the slit 21 described above are provided symmetrically on the lower left and right sides of the display device. Further, as described in the third and fourth embodiments, the speaker unit 1, the inclined surface 25, the reflecting plate 24, and the slits 21 according to the present embodiment are arranged at two places on the upper left and right sides of the display device. You may make it arrange | position in the approximate center part. Further, the speaker unit 1 may be attached to the panel unit 3 through the angle 5 as in the first embodiment.

  The fifth embodiment has the above-described configuration, and the other configurations and operations are the same as those of the first to fourth embodiments. Therefore, the corresponding parts are denoted by the same reference numerals and detailed description thereof is omitted. To do.

Embodiment 6
The sixth embodiment relates to a form in which the speaker 11 is attached backward. FIG. 16 is a longitudinal sectional view showing a longitudinal section in the vicinity of the speaker 11 according to the sixth embodiment. As in the first embodiment, the enclosure 14 of the speaker unit 1 is mounted on the backlight shield 33 at the lower back of the panel unit 3. Although the enclosure 14 is provided in the enclosure 14 so that the sound output direction of the speaker 11 faces downward in the first embodiment, in the sixth embodiment, the speaker 11 includes the back surface 26 and the bottom surface 27 of the back cabinet 2 where the sound is behind. It is provided so that it may output toward the inclined surface 25 between.

  As shown in FIG. 16, the speaker 11 is attached to the back surface so that the sound emitting surface of the speaker 11 and the plane formed by the back surface of the panel unit 3 are substantially parallel. That is, the speaker unit 1 is fixed to the rear surface of the panel unit 3 so that the sound output direction of the speaker 11 is opposite to the front surface of the panel unit 3. The back surface of the enclosure 14 is open and holds the side surface of the frame 114 of the speaker 11. As in the fifth embodiment, the back cabinet 2 includes a back surface 26, a bottom surface 27, an inclined surface 25, and a reflection plate 24.

  Between the back surface 26 and the bottom surface 27 of the back cabinet 2, a rectangular inclined surface 25 that is inclined at a predetermined angle in a sectional view is formed. .. Are formed on the inner surface of the inclined surface 25 in the vicinity of the speaker 11 so as to protrude at a predetermined angle with respect to the inclined surface. A slit 21 serving as both heat dissipation and sound emission is formed at one end of the bottom surface 27 near the inclined surface 25. The sound from the speaker 11 is emitted toward the reflecting plate 24 on the inclined surface 25. The sound reflected by the reflecting plate 24 is output toward the lower side of the front cabinet 4 from the slit 21 formed on the bottom surface, and is emitted toward the front side of the panel unit 3. The speaker unit 1, the inclined surface 25, the reflecting plate 24, and the slit 21 described above are provided symmetrically on the lower left and right sides of the display device. Further, as described in the third and fourth embodiments, the speaker unit 1, the inclined surface 25, the reflecting plate 24, and the slits 21 according to the present embodiment are arranged at two places on the upper left and right sides of the display device. You may make it arrange | position in the approximate center part. Further, the speaker unit 1 may be attached to the panel unit 3 through the angle 5 as in the first embodiment.

  The sixth embodiment has the above-described configuration, and the other configurations and operations are the same as those of the first to fifth embodiments. Therefore, the corresponding parts are denoted by the same reference numerals and detailed description thereof is omitted. To do.

It is a typical perspective view which shows the assembly state of a display apparatus. It is a perspective view which shows the attachment state of a speaker unit. It is a typical perspective view which shows the attachment state of an angle. It is a perspective view which shows a display apparatus lower side. It is sectional drawing which shows the cross section of a woofer. It is a longitudinal cross-sectional view which shows the vertical cross section of the speaker vicinity of a display apparatus. It is a typical perspective view which shows the bottom face of a display apparatus. It is an expanded sectional view showing details of a section of a louver. 6 is a longitudinal sectional view showing a longitudinal section in the vicinity of a speaker according to Embodiment 2. FIG. FIG. 10 is a schematic perspective view showing an assembled state of a display device according to Embodiment 3. 6 is a longitudinal sectional view showing a longitudinal section in the vicinity of a speaker according to Embodiment 3. FIG. FIG. 6 is a schematic perspective view showing an assembled state of a display device according to Embodiment 4. FIG. 9 is a cross sectional view showing a cross section in the vicinity of a speaker according to a fourth embodiment. FIG. 10 is a longitudinal sectional view showing a longitudinal section in the vicinity of a speaker according to a fifth embodiment. FIG. 10 is a schematic perspective view showing a bottom surface of a display device according to a fifth embodiment. FIG. 10 is a longitudinal sectional view showing a longitudinal section in the vicinity of a speaker according to a sixth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Speaker unit 2 Back cabinet 3 Panel part 4 Front cabinet 5 Angle 11 Speaker 12 Tweeter 13 Woofer 14 Enclosure 21 Slit 22 Frame 23 Louver 24 Reflector 25 Inclined surface 26 Back surface 27 Bottom surface 31 Electrical component 33 Backlight shield 41 Emission hole 42 Tweeter Opening 44 for woofer 45 recessed portion 51 flat plate portion 52 side plate portion 53 through hole 55 flange portion 56 screw hole 56B rubber bush 131 duct 143 third opening portion 146 hook 115 edge 110 vibration plate 112 yoke 113 magnet 114 frame 117 damper

Claims (13)

A panel section for displaying images,
A speaker unit provided on the back surface of the panel unit, the sound emitting surface being substantially perpendicular to the back surface of the panel unit;
A housing for housing the panel unit and the speaker unit;
An opening formed near the speaker unit of the housing;
And a louver provided in the opening. The louver is
The display device according to claim 1, wherein the display device is inclined toward a front side of the panel unit. The louver is
The display device according to claim 1, wherein the display device includes a plurality of plates that are installed in the opening and are inclined toward the front side of the panel unit. A panel section for displaying images,
A speaker unit provided on the back surface of the panel unit, and an angle formed by the back surface and the sound emitting surface is an acute angle;
A housing for housing the panel unit and the speaker unit;
An opening formed near the speaker unit of the housing;
And a louver provided in the opening. A panel section for displaying images,
A speaker unit provided on the back surface of the panel unit, and an angle formed by the back surface and the sound emitting surface is an acute angle;
A housing for housing the panel unit and the speaker unit;
A reflector projecting from the inner wall of the housing in the vicinity of the speaker unit;
A display device comprising: an opening formed in the casing in the vicinity of the speaker unit. A panel section for displaying images,
A speaker unit that is provided on the back of the panel unit and whose sound output direction is opposite to the front of the panel unit;
A housing for housing the panel unit and the speaker unit;
A reflector projecting from the inner wall of the housing in the vicinity of the speaker unit;
A display device comprising: an opening formed in the casing in the vicinity of the speaker unit. The speaker unit is
The display device according to any one of claims 1 to 6, wherein the display device is provided at two locations on the left and right sides below the back of the panel unit. The speaker unit is
The display device according to any one of claims 1 to 6, wherein the display device is provided at two places on the upper left and right sides of the rear surface of the panel unit. The speaker unit is
The display device according to any one of claims 1 to 6, wherein the display device is provided at two locations near the center of the left corner and the right corner of the back of the panel unit. The display device according to claim 1, further comprising: a buffer member attached to absorb vibration transmitted from the speaker unit to the panel unit. The speaker unit includes a first speaker and an enclosure for housing the first speaker,
A second opening that opens to the housing on the front side of the panel portion;
The display device according to claim 1, further comprising: a second speaker having a different sound range from the first speaker that outputs sound through the second opening. The display device according to claim 11, further comprising a third opening that opens in the enclosure. A fourth opening that opens to the housing on the front side of the panel;
The display device according to claim 12, further comprising: a tubular connecting pipe that connects the third opening and the fourth opening.

Images