WO2015005484A1

WO2015005484A1 - Display device and television receiver

Info

Publication number: WO2015005484A1
Application number: PCT/JP2014/068626
Authority: WO
Inventors: 健一諏訪; 仁長谷川; 崇熊代; 智裕山道; 大樹岩田
Original assignee: シャープ株式会社
Priority date: 2013-07-12
Filing date: 2014-07-11
Publication date: 2015-01-15
Also published as: JP5658853B1; JP2015019324A

Abstract

Provided are a display device and a television receiver which are capable of preventing chattering noise of a housing. A display device (10) is provided with a display unit (20) which has a screen for displaying an image on the front side, and a housing (30, 40) in which an opening is provided in a portion corresponding to the screen and which has a bottom wall (311, 4131), the display device is provided with a support plate (100) for supporting the display unit (20), and the support plate (100) is disposed to be in contact with the inner surface of the bottom wall (311, 4131) of the housing (30, 40). By having the above configuration, the display device and a television receiver can prevent chattering noise of the housing.

Description

Display device and television receiver

The present application relates to a display device and a television receiver that prevent chatter noise in a casing.

¡Speakers fixed to the housing of the display device generate vibration associated with sound. When the vibration from the speaker propagates to the joint of the divided housing, the divided housing components come into contact with each other to generate a so-called chattering sound, which degrades the performance quality of the product. Therefore, as a measure against chatter noise, a buffer tape, a buffer sheet, or the like is attached to the joint portion of the divided housing portions. On the other hand, a speaker system is disclosed that removes chatter noise by fixing a heavy base with bolts to the bottom surface of the bottom plate of a speaker cabinet constituting the speaker box (see, for example, Patent Document 1).

Japanese Utility Model Publication 7-49901

However, affixing a buffer tape, a buffer sheet, etc. is a cumbersome operation, and an operation for confirming that the buffer tape, the buffer sheet, etc. are not peeled off from the joint portion of the housing part also occurs. Further, when the speaker system according to Patent Document 1 is attached to the outside of the display device, the appearance of the display device is deteriorated due to the heavy base.

This application has been made in view of such circumstances. The objective is to provide the display apparatus and television receiver which can prevent the chatter sound of a housing | casing.

The display device according to the present application is a display device including a display unit having a screen for displaying an image on the front side and a housing having a bottom wall provided with an opening corresponding to the screen and supporting the display unit. The support plate is provided in contact with the inner surface of the bottom wall of the housing.

The display device according to the present application is characterized in that the display unit and the support plate are connected to each other, and a support column that supports the display unit is provided.

The display device according to the present application includes a reproducing unit that reproduces an image recorded on a recording medium, and the support plate supports the reproducing unit.

The display device according to the present application is characterized in that an opening smaller than the support plate is formed in the bottom wall of the casing.

A display device according to the present application includes a speaker box in which a speaker is fixed inside a box, the support plate is disposed below the center of the display unit, and the support plate is in contact with the inner surface of the bottom wall of the housing A part of is directly under the speaker box.

A television receiver according to the present application includes the display device described above and a reception unit that receives a television broadcast, and the display unit of the display device displays an image related to the television broadcast received by the reception unit. It is configured to display on a screen, and the reproduction unit records an image relating to a television broadcast received by the reception unit.

According to the display device and the television receiver according to the present application, it is possible to prevent the chatter noise of the housing.

It is the perspective view which looked at the television receiver from the front side. It is the perspective view which looked at the television receiver from the back side. It is the perspective view which looked at the television receiver which removed the back cabinet from the back side. It is the disassembled perspective view which looked at the television receiver which removed the back cabinet and the speaker box from the back side. It is an expansion perspective view of a plate edge part. It is the perspective view which looked at the support | pillar from the back side. It is the perspective view which looked at the support | pillar from the bottom face side. It is a fragmentary sectional view of the television receiver lower part cut | disconnected by the vertical cut surface which passes the center of a speaker box. It is a front view of a speaker box. It is a perspective view which shows the rear surface vicinity of the front cabinet where a speaker box is attached. It is a fragmentary sectional view of the lower part of the television receiver cut | disconnected by the part different from the speaker box cross section of FIG. It is a rear view of a speaker box. It is a fragmentary perspective view which shows the inner surface of the box part of the back cabinet facing the right speaker box from the front left side. It is explanatory drawing which shows a mode that a speaker box is attached to a front cabinet. It is the perspective view which looked at the support plate from the upper part of the front side. It is the perspective view which looked at the projection part of the back cabinet from the front side lower part. It is a fragmentary sectional view of the television receiver lower part cut | disconnected by the vertical cut surface which passes the center of a television receiver. It is a bottom view of a television receiver.

A display device according to an embodiment of the present application is used for, for example, a television receiver, an electronic blackboard, a monitor connected to a tuner (receiver), a monitor connected to a desktop computer, and digital signage. Display. Hereinafter, as an example of the display device, a television receiver will be described based on the drawings relating to the embodiment.

FIG. 1 is a perspective view of the television receiver 10 as seen from the front side. Here, when the viewer faces the screen 21 on which the television receiver 10 in the standing posture displays an image, the viewer side from the screen 21 is the front side or the front side, and the opposite is the rear side or the back side. To do. The screen 21 has a horizontally long rectangular shape. From the viewer toward the screen 21, the right side in the long side direction of the screen 21 is the right side of the television receiver 10, and the left side in the long side direction of the screen 21 is the left side of the television receiver 10. An upper side in the short side direction of the screen 21 is an upper side of the television receiver 10, and a lower side in the short side direction of the screen 21 is a lower side of the television receiver 10. FIG. 1 shows a television receiver 10 viewed from the left side on the front side.

The television receiver 10 includes a display unit 20 and a front cabinet (housing) 30. The display unit 20 is, for example, a liquid crystal panel module, a plasma module, an organic EL (Electro Luminescence) module, a CRT (Cathode Ray Tube) module, or the like. The display unit 20 has a rectangular plate shape, and has a horizontally long rectangular screen 21 on the front side.

The front cabinet 30 is a part of a housing that covers the front side of the display unit 20, and is made of, for example, a synthetic resin. A portion of the front cabinet 30 corresponding to the screen 21 of the display unit 20 is provided with a horizontally-long rectangular opening. Therefore, the front cabinet 30 viewed from the front has a horizontally long rectangular frame shape.

The lower end portion of the front cabinet 30 constitutes a flat flange portion 31 projecting over the entire length to the front side. The top-view shape of the flange portion 31 is an isosceles trapezoidal shape with a shorter front side. If the television receiver 10 receives a force that falls forward, the bottom surface of the flange 31 presses the installation surface of the television receiver 10 so that the television receiver 10 avoids overturning. It is configured.

A strip-shaped decorative plate 32 extending in the left-right direction is arranged on the front side of the front cabinet 30 located between the lower end of the opening corresponding to the screen 21 and the flange portion 31. There are three decorative boards 32, one on each of the left side, the center, and the right side, arranged on the front side of the front cabinet 30. The left and right decorative plates 32 are attached to the front surface of the front cabinet 30. On the left side of the left decorative panel 32 are a plurality of openings through which LEDs (Light Emitting Diodes) indicating ON / OFF of the power source and a receiving unit for receiving an infrared signal from a remote controller (not shown) can be seen. It is arranged in a straight line. In the rear lower center of the television receiver 10, an optical disk drive 80 (see FIG. 3) described later is disposed. The central decorative board 32 is attached to the front surface of the optical disk drive 80. An opening from which a button for inserting and removing the tray of the optical disk drive 80 protrudes is disposed at a position on the left side of the right decorative plate 32.

FIG. 2 is a perspective view of the television receiver 10 viewed from the back side. The television receiver 10 includes a back cabinet (housing) 40. The back cabinet 40 is a part of a housing that covers the rear side of the television receiver 10. The back cabinet 40 is made of, for example, a synthetic resin and has a dish shape that protrudes substantially rearward.

However, the lower part of the back cabinet 40 constitutes a flange portion 41 projecting to the rear side. The thickness of the flange portion 41 in the vertical direction is thicker than the flange portion 31 of the front cabinet 30. The flange portion 41 includes

box portions

411 and 412 and a protrusion 413. The

box portions

411 and 412 constitute the left and right sides of the flange portion 41 and have a rectangular parallelepiped shape extending in the left-right direction. The projecting portion 413 constitutes the central portion of the flange portion 41 and projects further to the rear side than the

box portions

411 and 412. The upper surface of the protrusion 413 has an isosceles trapezoidal shape with a shorter rear side. The overall top view shape of the flange portion 41 protrudes rearward and forms a mountain shape with an expanded skirt. The vicinity of the boundary between the box part 411, the protrusion 413, and the box part 412 in the flange part 41 has a curved shape and is excellent in design.

The average width of the flange portion 41 in the front-rear direction is wider than the average width of the flange portion 31 in the front-rear direction. If the television receiver 10 receives a force to fall backward, the bottom surface of the flange 41 presses the installation surface of the television receiver 10 so that the television receiver 10 avoids toppling. It is configured.

The television receiver 10 does not include a stand that supports itself in a standing posture. The flange portion 31 of the front cabinet 30 in contact with the installation surface and the flange 41 of the back cabinet 40 are replaced with a stand. Thus, the lower part of the television receiver 10 realizes a new design that combines both the functionality and the decoration.

FIG. 3 is a perspective view of the television receiver 10 with the back cabinet 40 removed as viewed from the back side. The television receiver 10 includes a tuner 50, a speaker box 60, an HD (Hard Disk) drive (playback unit) 70, and an optical disk drive (playback unit) 80.

The tuner 50 is a tuning device that selects and receives a radio wave of a required channel related to television broadcasting, converts it into a signal of a constant frequency, and outputs it.
The display unit 20 displays an image related to the television broadcast received by the tuner 50 on the screen 21 in accordance with an operation based on the remote controller.
In addition to the tuner 50, a plurality of substrates related to power supply, image processing, control, and the like are attached to the rear surface of the display unit 20.

The speaker box 60 includes a rectangular parallelepiped box 61 extending in the horizontal direction. The box 61 is formed by joining a plurality of members made of synthetic resin, for example, by ultrasonic welding. Therefore, the box body 61 has high hermeticity. The television receiver 10 includes two speaker boxes 60. The two speaker boxes 60 are attached to the rear surface portions of the front cabinet 30 respectively corresponding to the positions of the left side and the right side of the rear lower end of the display unit 20. Each speaker box 60 is covered by

box portions

411 and 412 of the back cabinet 40 when the television receiver 10 is assembled. The speaker box 60 outputs audio related to the television broadcast received by the tuner 50 in response to an operation based on the remote controller.

The left and right ends of the lower part of the front cabinet 30 on both outer sides of the left and right speaker boxes 60 each have a substantially triangular shape, and the outermost part has a small bottom surface in contact with the installation surface.

The HD drive 70 has a magnetic disk, and is a recording device that records image and audio signals related to television broadcasting received by the tuner 50 on the magnetic disk. The HD drive 70 is also a playback device that plays back image and audio signals recorded on the magnetic disk. The display unit 20 inputs an image signal reproduced by the HD drive 70 and displays an image corresponding to the input signal on the screen 21. The speaker box 60 receives the audio signal reproduced by the HD drive 70 and outputs the audio corresponding to the input signal.

The optical disc drive 80 is a recording device that records image and audio signals related to television broadcasting received by the tuner 50 on an optical disc such as a DVD (Digital Versatile Disc) and a BD (Blu-ray Disc, registered trademark). The optical disc drive 80 is also a playback device that plays back image and audio signals recorded on the optical disc. The display unit 20 inputs an image signal reproduced by the optical disc drive 80 and displays an image corresponding to the input signal on the screen 21. The speaker box 60 receives a sound signal reproduced by the BD drive 90 and outputs a sound corresponding to the input signal.
The optical disc drive 80 can also play back image and audio signals related to content such as movies recorded in advance on the optical disc.

4 is an exploded perspective view of the television receiver 10 with the back cabinet 40 and the speaker box 60 removed, as viewed from the back side, FIG. 5 is an enlarged perspective view of the end portion of the plate 91, and FIG. FIG. 7 is a perspective view of the support column 90 viewed from the bottom side. The television receiver 10 includes two

metal columns

90 and 90 and a support plate 100 that support the display unit 20. A metal plate 91 having a horizontally long rectangular shape is provided at the lower rear surface of the display unit 20.

Each end portion of the plate 91 is provided with one convex portion 91a and four

screw holes

91b, 91b, 91b, 91b. The four screw holes 91b are equally arranged around the convex portion 91a.

The support plate 100 is a metal plate having a semicircular or semi-elliptical shape having a string on the front side. The support plate 100 is made of, for example, iron and has sufficient strength. Two concave portions 100a and 100a and four

screw holes

100b, 100b, 100b, and 100b are provided in the left and right portions of the upper surface of the support plate 100, respectively. The two recesses 100a are arranged side by side. Two screw holes 100b are arranged side by side on the front side of the recess 100a, and two screw holes 100b are arranged side by side on the rear side of the recess 100a.

The flange portion 31 of the front cabinet 30 and the flange portion 41 of the back cabinet 40 each have a bottom wall in contact with the installation surface. The support plate 100 is disposed in contact with the upper surfaces of the bottom walls of the flange portion 31 and the flange portion 41.

The support column 90 extends vertically, and has a L-shape in side view with its lower end extending rearward. The support 90 is configured by bending a sheet metal from three directions. The bending strength of the support 90 is improved by bending the left and right portions of the sheet metal backward.

The front-rear dimension of the lower part 93 of the support column 90 is larger than the front-rear dimension of the upper part, and the area of the lower part 93 is larger than the upper part. Therefore, the bending strength is further improved.

The strength of the bottom of the column 90 is increased by bending from the left and right and from the front. As shown in FIGS. 6 and 7, in the bottom portion of the support column 90, the upper portion 94 is a portion formed by bending from the front, and the lower portion 95 is a portion formed by bending from the left and right.

The upper end portion of the support column 90 is provided with a center hole 90a and four

insertion holes

90b, 90b, 90b, 90b that are equally distributed around the center hole 90a and into which screws are inserted. The positions of the center hole 90a and the insertion hole 90b correspond to the positions of the convex portion 91a and the screw hole 91b, respectively.

The bottom of the column 90 is provided with four

insertion holes

90d, 90d, 90d and 90d into which screws are inserted. Further, two

convex portions

90 c and 90 c protrude from the bottom lower surface of the support column 90. The positions of the convex portion 90c and the insertion hole 90d correspond to the concave portion 100a and the screw hole 100b, respectively.

The support column 90 is arranged so that the projection 91 a of the plate 91 is inserted into the center hole 90 a of the support column 90 and the projection 90 c of the support column 90 is inserted into the recess 100 a of the support plate 100. The convex portion 91 a prevents the position shift of the column 90 with respect to the plate 91. Further, the convex portion 90 c prevents the positional shift of the support column 90 with respect to the support plate 100.

Screws are inserted into the four insertion holes 90 b at the top of the support column 90, and the inserted screws are screwed into the screw holes 91 b of the plate 91. The column 90 is fixed to a predetermined position of the plate 91 by four screws and the convex portion 91a.

Screws are inserted into the four insertion holes 90 d at the bottom of the support column 90, and the inserted screws are screwed into the screw holes 100 b of the support plate 100. The support column 90 is fixed to a predetermined position of the support plate 100 by four screws and a convex portion 90c. The two support columns 90 are fixed by screws to the approximate center of the left half and the approximate center of the right half of the support plate 100, respectively. Thereby, the loads of the display unit 20 and the tuner 50 are supported by the support plate 100 via the support column 90. One or three or more struts 90 may be provided on the support plate 100. Moreover, the support | pillar 90 is not limited to the structure which bent the sheet metal. For example, it may be a solid or hollow column or a cylinder.

The HD drive 70 is fixed on the rectangular metal plate 71 with screws on the upper side of the optical disk drive 80. A bracket 92 having an L-shaped cross-sectional view and extending backward is fixed to the two columns 90 with screws. The metal plate 71 to which the HD drive 70 is fixed is fixed to a metal fitting 92 fixed to the column 90 with screws. Therefore, the loads of the HD drive 70, the metal plate 71, and the metal fitting 92 are supported by the support plate 100.

The optical disc drive 80 is fixed from the side with a screw inside a metal box 81 fixed on the support plate 100 with a screw. Therefore, the loads of the optical disc drive 80 and the box 81 are supported by the support plate 100.

The HD drive 70, the metal plate 71 and the metal fitting 92, the optical disc drive 80 and the box 81 are separated by a slight gap and are not in direct contact with each other. For this reason, the HD drive 70 and the optical disc drive 80 are configured so as not to propagate vibrations caused by their own operations.

FIG. 8 is a partial cross-sectional view of the lower portion of the television receiver 10 cut along a vertical cut surface passing through the center of the speaker box 60.
FIG. 9 is a front view of the speaker box 60.
The speaker box 60 includes a box body 61, a speaker 62, a first passage port 63, and a first cylinder part 64. The speaker 62 is a device that emits sound waves by changing the oscillating current into mechanical vibrations of the membrane.

The speaker 62 is horizontally long, and is fixed to the lower part of the box body 61 in a direction to output sound forward. A rectangular first passage port 63 extending in the left-right direction is provided in the portion of the box body 61 that faces the speaker 62. The first passage port 63 is an opening that allows the sound output from the speaker to pass outside the box body 61. The first cylinder portion 64 is a cylinder projecting forward from the box 61 portion at the peripheral edge of the first passage port 63, and the tip shape thereof is a rectangular frame shape extending in the left-right direction as with the first passage port 63. Make. The first cylinder portion 64 constitutes an acoustic path through which the sound output from the speaker 62 passes.

The speaker box 60 includes a bass reflex duct 66 (see FIGS. 8, 11 and 12). The bass reflex duct 66 is a circular tube provided at the upper rear side inside the box body 61. The bass reflex duct 66 amplifies low-frequency sound output from the speaker 62 by Helmholtz resonance.

FIG. 10 is a perspective view showing the vicinity of the rear surface of the front cabinet 30 to which the speaker box 60 is attached. In the rear surface portion of the front cabinet 30 corresponding to the first cylindrical portion 64, a first discharge port 34 having the same shape as the tip of the first cylindrical portion 64 is provided. The first discharge port 34 is an opening through which sound from the speaker 62 that has passed through the first tube portion 64 is discharged to the outside. The inside of the first discharge port 34 is divided into a plurality of openings by a lattice.

Between the front-end | tip part of the 1st cylinder part 64, and the peripheral part of the 1st discharge port 34, the 1st shock absorbing material 120 clamped by these interposes. The first cushioning material 120 has a rectangular frame shape similar to the distal end portion of the first cylindrical portion 64. The first buffer material 120 is made of an ethylene vinyl acetate copolymer resin, and a plurality of closed cells are formed therein. The ethylene vinyl acetate copolymer resin is softer than, for example, a thermosetting resin, and harder than urethane, for example. In addition, the closed cell type resin has lower air permeability than the resin having an open cell structure. Therefore, the first buffer material 120 has a great effect of absorbing sound and vibration caused by the speaker 62 and preventing propagation of sound and vibration.

FIG. 11 is a partial cross-sectional view of the lower portion of the television receiver 10 taken along a portion different from the cross section of the speaker box 60 of FIG.
FIG. 12 is a rear view of the speaker box 60.
A part of the rear surface of the box body 61 also serves as a part of the side surface of the bass reflex duct 66, and a part of the rear surface is rounded to protrude rearward.

The speaker box 60 includes a second passage port 67. The second passage port 67 is one opening of the bass reflex duct 66 connected to the surface of the box body 61. In other words, the bass reflex duct 66 is a circular pipe extending from the second passage port 67 toward the inside of the box body 61. The other opening of the bass reflex duct 66 is an open end and is disposed inside the box body 61.
The bass reflex duct 66 may be a square tube, and the second passage port 67 may be square or rectangular.

A donut-shaped second cushioning material 130 is bonded around the second passage port 67. The inner diameter of the second buffer material 130 is substantially the same as the diameter of the second passage port 67. The material of the second buffer material 130 is the same as the material of the first buffer material 120.

FIG. 13 is a partial perspective view showing the inner surface of the box portion 412 of the back cabinet 40 facing the right speaker box 60 from the front left side. The box portion 412 facing the second passage port 67 of the speaker box 60 is provided with a circular second discharge port 42 that discharges the low-frequency sound amplified by the bass reflex duct 66 to the outside. A second cylindrical portion 43 protrudes from the peripheral edge of the second discharge port 42 toward the second cushioning material 130 on the front side. The second cylinder portion 43 constitutes a sound path through which the sound output from the second passage port 67 passes.

Next, a procedure for attaching the speaker box 60 will be described.
FIG. 14 is an explanatory diagram showing a state in which the speaker box 60 is attached to the front cabinet 30. The front cabinet 30 is placed on a substantially horizontal base with the rear side of the front cabinet 30 facing upward. The first cushioning material 120 is temporarily fixed around the first discharge port 34. In that case, the 1st shock absorbing material 120 is affixed around the 1st discharge port 34 with a seal | sticker. Alternatively, the first shock absorber 120 is temporarily fixed around the first discharge port 34 by inserting a protrusion protruding from the rear surface of the front cabinet 30 into a cut or hole provided in the first shock absorber 120. The

The mounting ribs 65 each having a through hole in the front-rear direction are protruded from both side surfaces of the box 61 of each speaker box 60 (FIGS. 9, 12, and 14). A donut-shaped cushioning material is attached to the inner wall of the through hole. The speaker box 60 is fixed to the front cabinet 30 by fixing the mounting ribs 65 to the bosses 33 protruding from the rear surface of the front cabinet 30 with screws. At that time, the first cushioning material 120 is pressed back and forth, and is sandwiched between the distal end portion of the first cylindrical portion 64 and the peripheral portion of the first discharge port 34.

When the attachment of the parts such as the display unit 20 to the front cabinet 30 is completed, the back cabinet 40 is stacked on the front cabinet 30 with the front side of the back cabinet 40 facing downward. The back cabinet 40 and the front cabinet 30 are engaged with each other at the engaging portions. And the back cabinet 40 and the front cabinet 30 are fastened with the screw put in the some hole provided in the circumference | surroundings of the back cabinet 40 from the rear side. At that time, the second cushioning material 130 is sandwiched between the distal end portion of the second cylindrical portion 43 and the peripheral edge portion of the second passage port 67.

FIG. 15 is a perspective view of the support plate 100 as viewed from above the front side. The support plate 100 includes a support plate portion 101 and a frame wall portion 102. The support plate portion 101 is a main body of the support plate 100 and is a semicircular or semi-elliptical plate. The front side of the support plate portion 101 forms a straight edge substantially parallel to the long side of the screen 21. The outer shape of the support plate 101 is symmetric with respect to the center line in the front-rear direction. An intermediate edge portion between the front edge of the support plate portion 101 and the rear end is slightly angular.

The support plate portion 101 has a two-stage plateau shape, and includes a bottom wall 1012, two middle-stage walls 1012, and two support bottom walls 1013 from below to above. The bottom wall 1011 constitutes the lowest flat surface. A plurality of ventilation holes are perforated at the center of the bottom wall 1011. The two middle step walls 1012 form a pentagonal flat portion that rises upward from the bottom wall 1011, and are arranged symmetrically with respect to the center line of the support plate portion 101 in the front-rear direction.

The two column bottom walls 1013 each form a rectangular flat portion that swells upward from the middle step wall 1012 and is arranged symmetrically with respect to the center line of the support plate portion 101 in the front-rear direction. The flat portion of the column bottom wall 1013 constitutes a bonding surface to which the column 90 is bonded with a screw. The flat part of the column bottom wall 1013 is slightly inclined rearward. The support column 90 is attached to the support column bottom wall 1013 so that the extending direction thereof is perpendicular to the support column wall 1013. Therefore, the display unit 20 and the like are fixed to the support column 90 in a posture that is slightly inclined rearward.

Four thin linear notches 1014 are provided on the front edge of the support plate portion 101 toward the rear. The front side edge of the support plate portion 101 divided by these four notches 1014 includes three extending portions 1015 and two lower extending portions 1016. The extending portions 1015 and the lower extending portions 1016 are arranged alternately.

The extending portion 1015 constitutes a flat surface obtained by extending the flat surface of the bottom wall 1011. On the other hand, the lower extending portion 1016 is L-shaped in an elevational view, and is located between the inner portions of the two notches 1014 so as to be positioned below the extending portion 1015 by the thickness of the front cabinet 30. The base located at is slightly bent downward. Therefore, when the support plate portion 101 is viewed from the front, the distal end portions of the extending portion 1015 and the lower extending portion 1016 are arranged in a staggered manner. The front cabinet 30 is locked to the support plate 100 by the extended portion 1015 and the lower extended portion 1016 sandwiching the bottom wall of the flange portion 31 of the front cabinet 30.

The frame wall portion 102 is a wall that rises upward from the semicircular or semi-elliptical peripheral end of the support plate portion 101. A screw hole 1021 is provided in the front-rear direction at the rearmost and central portion of the frame wall portion 102.

FIG. 16 is a perspective view of the protrusion 413 of the back cabinet 40 as viewed from the lower front side. The protrusion 413 is a part of the back cabinet 40 that covers the support plate 100, the lower portion of the support 90, the HD drive 70, and the optical disc drive 80 from the rear side (FIGS. 2 and 3). The protrusion 413 includes a bottom wall 4131, a side wall 4132, and a top wall 4133.

The bottom wall 4131 has a belt shape along the frame wall portion 102 of the support plate 100, and constitutes a bottom surface where the back cabinet 40 contacts the installation surface. At the time of assembling the television receiver 10, the support plate portion 101 of the support plate 100 is placed on the upper surface of the bottom wall 4131.

The side wall 4132 has one step portion, and includes a lower side wall 4134 and an upper side wall 4135 which are divided by the step portion. The upper side wall 4135 is wider in the vertical direction than the lower side wall 4134 and protrudes more rearward. The width of the lower side wall 4134 in the vertical direction is substantially the same as the height of the frame wall portion 102 of the support plate 100. When the television receiver 10 is assembled, the frame wall 102 of the support plate 100 is brought into contact with the lower side wall 4134. A screw hole 4136 is provided in the front-rear direction at the rearmost and central portion of the lower side wall 4134.

Three ribs 4137 are extended on the front side edge of the top wall 4133. The three ribs 4137 are members for fixing the protruding portion 413 and the back cabinet 40 portion above the flange portion 41 including the protruding portion 413.

FIG. 17 is a partial cross-sectional view of the lower part of the television receiver 10 cut along a longitudinal cut surface passing through the center of the television receiver 10.
A claw is provided at the tip of the upper surface of the rib 4137 of the protrusion 413. Further, a claw that engages with a claw of the rib 4137 is provided at the lower end of the back cabinet 40 portion above the protrusion 413. By the engagement of these claws, the protrusion 413 and the back cabinet 40 portion above the protrusion 413 are coupled.

The screw 414 and the support plate 100 of the back cabinet 40 are fixed by screwing the screw into the screw hole 4136 of the back cabinet 40 and the screw hole 1021 of the support plate 100 from the rear side. The support plate 100 is placed on the bottom wall 311 of the front cabinet 30 and the bottom wall 4131 of the back cabinet 40. In more detail about the front side, the extending portion 1015 of the support plate 100 is placed on the bottom wall 311 of the flange portion 31 of the front cabinet 30.

FIG. 18 is a bottom view of the television receiver 10. 18 correspond to the rear side and the front side of the television receiver 10, respectively. In FIG. 18, hatching is applied to portions where the front cabinet 30 and the back cabinet 40 are in contact with the installation surface of the television receiver 10. A portion where the front cabinet 30 and the back cabinet 40 are in contact with the installation surface includes a central portion and side end portions. Both side ends are a small area of the bottom wall 311 of the front cabinet 30, and most of the load of the television receiver 10 is configured to be applied to the central portions of the front cabinet 30 and the back cabinet 40.

When viewed from below, the bottom wall 311 portion of the front cabinet 30 that is pressed downward by the extending portion 1015 of the support plate 100 corresponds to the portion of the front cabinet 30 that contacts the installation surface. Further, the bottom wall 4131 of the back cabinet 40 pressed downward by the rear edge of the support plate 100 corresponds to the portion of the back cabinet 40 that is in contact with the installation surface.

There are also two parts of the back cabinet 40 in contact with the installation surface between the bottom wall 311 and the bottom wall 4131, and these parts constitute a part of the bottom wall of the

box portions

411, 412 of the back cabinet 40. ing. Most of the bottom walls of the

box portions

411 and 412 are not in contact with the installation surface. On the other hand, when viewed from below, the left end portion 4111 of the bottom wall of the box portion 411 and the right end portion 4121 of the bottom wall of the box portion 412 are in contact with the installation surface. A part of the support plate 100 is in contact with the upper surfaces of the left end portion 4111 of the bottom wall of the box portion 411 and the right end portion 4121 of the bottom wall of the box portion 412, and the left end portion 4111 of the bottom wall and the bottom wall The right end 4121 is pressed downward.

In the bottom center of the television receiver 10 as viewed from the bottom, an opening smaller than the support plate 100 is formed in the

bottom walls

311, 4111, 4131, 4121 of the casing composed of the front cabinet 30 and the back cabinet 40 as a whole. . Alternatively, the

bottom walls

311, 4111, 4131, 4121 are arranged in a frame shape so as to border the periphery of the lower surface of the support plate 100.

Further, in FIG. 18, thick chain lines are drawn in the bottom areas of the front cabinet 30 and the back cabinet 40 that correspond directly below the speaker box 60 (see FIG. 3). A part of the portion (hatched portion) where the housing of the television receiver 10 is in contact with the installation surface is included in the bottom region (thick chain line portion) of the housing corresponding to the position directly below the speaker box 60.

Part of the part (

bottom walls

311, 4111, 4121) where the support plate 100 and the

bottom wall

311, 4111, 4131, 4121 inside the casing of the television receiver 10 are in contact is located directly below the speaker box 60. To do. That is, the housing portion of the television receiver 10 located immediately below the speaker box 60 is pressed downward by the support plate 100.

In the above description, the bottom center of the television receiver 10 as viewed from the bottom is generally provided with an opening smaller than the support plate 100 in the

bottom walls

311, 4111, 4131, 4121 of the casing composed of the front cabinet 30 and the back cabinet 40. It had been. However, an opening may not be provided in the bottom wall of the casing composed of the front cabinet 30 and the back cabinet 40, and the entire lower surface of the support plate 100 may press the entire bottom wall of the casing downward.

In the above description, the support plate 100 has a semicircular or semi-elliptical shape, but the shape of the support plate 100 is not limited thereto. The support plate 100 may be, for example, rectangular, H-shaped, V-shaped, X-shaped, C-shaped, Y-shaped, U-shaped, O-shaped, D-shaped, or M-shaped.

According to the television receiver 10, the chatter noise of the housing can be prevented.
The support plate 100 supports loads of the display unit 20, the tuner 50, the HD drive 70, the optical disc drive 80, and the like. Therefore, the loads of the support plate 100, the display unit 20, the tuner 50, the HD drive 70, the optical disc drive 80, etc. reach the

bottom walls

311, 4111, 4131, 4121 of the casing on which the support plate 100 is placed. Become. As a result, the

bottom walls

311, 4111, 4131, 4121 of the casing are pressed by the support plate 100 and the mounting surface, so that the vibration of the casing, which is the main cause of chatter noise, is reduced. Further, by reducing the vibration of the casing, the vibrations of various substrates attached to the rear surface of the display unit 20 are also reduced, and chatter noise generated by touching them can be prevented.

According to the television receiver 10, the positional relationship between the speaker box 60, the housing portion of the television receiver 10 near the speaker box 60 and the support plate 100 contributes to the prevention of chatter noise in the housing.
Part of the vibration caused by the sound output from the speaker 62 is transmitted to the chassis near the speaker box 60 and propagates to the entire chassis. Due to this propagation, chatter noise is generated at the joints between the casings, the joints between the casings and other members, and the like. For this reason, when this propagation is attenuated by a large element, the amount of vibration propagation into the housing can also be reduced, and consequently chatter noise can be reduced.
A chassis portion directly below the speaker box 60 disposed near the bottom surface of the chassis is closest to the speaker box 60 and is most susceptible to vibration from the speaker box 60. Therefore, by pressing a part of the casing directly below the speaker box 60 with the support plate 100, the vibration of the casing caused by the speaker 62 or the speaker box 60 can be greatly reduced.

The disclosed embodiments should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The technical features (configuration requirements) described in each embodiment can be combined with each other, and a new technical feature can be formed by combining them.

The display device includes a display unit 20 having a screen for displaying an image on the front side, and an opening provided in a portion corresponding to the screen, and a

housing

30 and 40 having

bottom walls

311, 4131, 4111, 4121. And a support plate 100 for supporting the display unit 20, and the support plate 100 is disposed in contact with the inner surfaces of the

bottom walls

311, 4131, 4111 and 4121 of the

casings

30 and 40.

According to the display device, it is possible to prevent chatter noises of the

housings

30 and 40.
The support plate 100 supports the load of the display unit 20. Therefore, the loads of the support plate 100 and the display unit 20 reach the

bottom walls

311, 4111, 4131, 4121 of the casing on which the support plate 100 is placed. As a result, the

bottom walls

311, 4111, 4131, 4121 of the

housings

30, 40 are pressed by the support plate 100 and the mounting surface, so that vibrations of the

housings

30, 40 that are the main cause of chatter noise are reduced. . Further, by reducing the vibrations of the

housings

30 and 40, vibrations of various substrates attached to the rear surface of the display unit 20 are also reduced, and chatter noise generated by touching them can be prevented.

The display device includes reproducing

units

70 and 80 for reproducing an image recorded on a recording medium, and the support plate 100 supports the reproducing

units

70 and 80.

The support plate 100 supports the loads of the display unit 20, the HD drive 70, and the optical disc drive 80. Therefore, the loads of the support plate 100, the display unit 20, the HD drive 70, and the optical disc drive 80 reach the

bottom walls

311, 4111, 4131, 4121 of the

casings

housings

The display device is characterized in that an opening smaller than the support plate 100 is formed in the

bottom walls

311, 4111, 4131, 4121 of the

casings

30, 40.

According to the display device, since the openings are provided in the

bottom walls

311, 4131, 4111, 4121, air can easily enter and exit from the vent holes drilled in the support plate 100, and heat dissipation efficiency can be improved. .

The display device includes a speaker box 60 in which a speaker 62 is fixed inside a box body 61, the support plate 100 is disposed below the center of the display unit 20, and the support plate 100 is attached to the

housings

30 and 40. A

portion

311, 4111, 4121, which is in contact with the inner surface of the

bottom walls

311, 4111, 4131, 4121, is directly below the speaker box 60.

According to the display device, by pressing a part of the chassis directly below the speaker box 60 with the support plate 100, the vibration of the chassis due to the speaker 62 or the speaker box 60 can be greatly reduced.

The television receiver 10 includes the display device described above and a receiving unit 50 that receives a television broadcast. The display unit 20 of the display device displays an image related to the television broadcast received by the receiving unit 50. It is configured to display on the screen, and the

reproduction units

70 and 80 are configured to record an image relating to the television broadcast received by the reception unit 50.

According to the television receiver 10, the chatter noise of the

housings

30 and 40 can be prevented.

The display device is characterized in that the support plate 100 is disposed below the center of the display unit 20 and has a semicircular or semi-elliptical shape having a string on the front side.

According to the display device, since the support plate 100 is formed according to the shape of the

casings

30 and 40, the

bottom walls

311, 4131, 4111 and 4121 can be pressed evenly without being biased.

10 Television receiver (display device)
20 Display unit 21 Screen 30 Front cabinet (housing)
311 Bottom wall 40 Back cabinet (housing)
4111 Bottom wall 4121 Bottom wall 4131 Bottom wall 50 Tuner (receiver)
60 Speaker box 61 Box 62 Speaker 70 HD drive (playback unit)
80 Optical disk drive (playback unit)
90 support 100 support plate

Claims

In a display device having a display unit having a screen for displaying an image on the front side and an opening provided in a portion corresponding to the screen, and having a casing having a bottom wall,
A support plate for supporting the display unit;
The display device, wherein the support plate is disposed in contact with the inner surface of the bottom wall of the casing.
The display device according to claim 1, further comprising a support column that connects the display unit and a support plate and supports the display unit.
A playback unit for playing back images recorded on a recording medium;
The display device according to claim 1, wherein the support plate supports the reproducing unit.
The display device according to claim 1, wherein an opening smaller than the support plate is formed in a bottom wall of the housing.
A speaker box with a speaker fixed inside the box is provided.
The support plate is disposed below the center of the display unit,
5. The display device according to claim 1, wherein a part of a portion where the support plate is in contact with an inner surface of a bottom wall of the casing is directly below the speaker box.
A display device according to any one of claims 1 to 5;
A receiver for receiving television broadcasts,
The display unit of the display device is configured to display an image related to the television broadcast received by the receiving unit on the screen.
The television receiver characterized in that the reproduction unit records an image relating to a television broadcast received by the reception unit.