JP6557508B2 - Display device and television receiver - Google Patents

Description

  The present invention relates to a display device including a rear cabinet and a television receiver.

  Thin display devices that occupy a small indoor area compared to the size of the display screen are widely used because they can effectively use a limited indoor space. One type of display device is a liquid crystal display device that includes a liquid crystal panel as a display panel. A liquid crystal display device is a display unit in which a liquid crystal panel that displays an image on the front surface, a backlight that irradiates light on the back surface of the liquid crystal panel, and a front cabinet that covers the periphery of the liquid crystal panel from the front side are integrated. Is covered by a rear cabinet (cover) from the back.

  For example, in Patent Document 1, the front cabinet and the rear cabinet are fixed by fitting two L-shaped holding ribs provided in the rear cabinet and a U-shaped fitting rib provided in the front cabinet. A fixing structure is described.

Japanese Patent Laid-Open No. 1-265596

  Incidentally, it is necessary to provide an operation unit for performing various operations in the display device. This type of operation unit is generally arranged in front of the backlight and exposed to the outside through a window hole provided in the front cabinet. In recent years, however, the front cabinet covers the peripheral portion of the display surface of the front cabinet. With this type of display device, it is difficult to secure a space for arranging the operation unit within the limited edge width of the front cabinet.

  In a display device narrowed to cope with this problem, a convex portion (fixed seat) is provided on the back surface of the display unit, and an operation portion fixed to the convex portion is provided through a window hole provided on the rear surface of the rear cabinet. A mounting structure that exposes to the outside is adopted.

  However, when this mounting structure is adopted, when the display unit and the cover (rear cabinet) are assembled, it is necessary to position the projection on the display unit and the window hole on the cover in a planar manner. This positioning is particularly troublesome in a display device having a large display unit. However, when the assembly is performed in a state where the positioning is insufficient, the peripheral portion of the window hole rides on the convex portion, and the operation unit There is a risk that the operation unit may be damaged.

  The mounting structure described above is also employed in terminal portions provided with input / output terminals for connection with external devices, and similar problems occur in these terminal portions.

  The present invention has been made in view of such circumstances, and provides a display device and the like that can easily assemble a display unit and a cover that require positioning of a convex portion and a window hole. With the goal.

A display device according to the present invention includes a display unit that displays an image on the front surface and a cover that covers the display unit from the back side, and a window hole formed in the cover is provided on the back of the display unit. In the display device provided with a convex portion exposed to the outside, a fitting portion that is provided in the vicinity of the convex portion and the window hole and that is fitted to each other at the facing portion between the cover and the display unit is provided. The fitting portion includes a fitting concave portion provided in the cover body, and a fitting convex portion provided in the display unit and fitted into the fitting concave portion, wherein the fitting concave portion is opposed to the fitting concave portion. The thickness of the two ribs decreases toward the edge of the cover .

A display device according to the present invention includes a display unit that displays an image on the front surface and a cover that covers the display unit from the back side, and a window hole formed in the cover is provided on the back of the display unit. In the display device provided with the convex portions exposed to the outside, the display device includes a plurality of fitting portions that are fitted to each other at the facing portion between the cover and the display unit, and at least one of the plurality of fitting portions. Are provided in the vicinity of the convex portion and the window hole, and each of the plurality of fitting portions is provided in a fitting concave portion provided in the cover body and in the display unit, and is fitted in the fitting concave portion. And the fitting recess has two opposing ribs, and the thickness of the two ribs decreases toward the edge of the cover. To do.

  In the display device according to the present invention, the fitting recess has a U-shape, and the fitting protrusion has a plate shape having an edge abutting against a parallel side of the U-shape.

  In the display device according to the present invention, the fitting concave portion has a rectangular frame shape, and the fitting convex portion has a plate shape having an edge abutting against a rectangular parallel side.

  In the display device according to the present invention, the fitting concave portion has a rectangular frame shape, and the fitting convex portion has a cross shape having an edge portion in contact with each side of the rectangle.

  The display device according to the present invention is characterized in that the convex portion is a fixed seat for fixing an operation unit for operating the display device.

  A television receiver according to the present invention includes the above-described display device and a receiving unit that receives a television broadcast, and displays video on the display unit based on the television broadcast received by the receiving unit. It is characterized by being.

  According to the present invention, it is possible to easily assemble the display unit and the cover.

It is a front side perspective view which outlines the external appearance of a display apparatus. It is a disassembled perspective view which shows the principal part structure of a display apparatus. It is a back side perspective view which shows the left edge part of the back surface of a display apparatus. It is a rear view which shows the left edge part of the backlight chassis fixed to the middle cabinet. It is a front view which shows the left edge part of a rear cabinet. It is a front view of a rear cabinet. It is a conceptual diagram which shows the left edge part of a display apparatus, and has shown the operation part periphery. It is a conceptual diagram which shows the left edge part of a display apparatus, and has shown the operation part periphery. It is a conceptual diagram which shows the left edge part of a display apparatus, and has shown the operation part periphery.

Embodiment 1
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. In the following description, the upper and lower sides and the left and right sides indicated by arrows in each figure are represented.

  FIG. 1 is a front perspective view schematically showing the appearance of the display device 1. FIG. 2 is an exploded perspective view showing a main configuration of the display device 1. The display device 1 includes a display unit 2 and a rear cabinet (cover) 3 that covers the back surface of the display unit 2.

  Further, the illustrated display device 1 is configured as a television receiver including a receiving unit 290 and a signal processing unit 291. The receiving unit 290 is connected to an antenna (not shown) and receives a television broadcast via the antenna. The signal processing unit 291 demodulates the data related to the television broadcast received by the receiving unit 290, separates the video data from the demodulated data, and outputs the separated video data. The display unit 2 displays a video based on the video data output from the signal processing unit 291.

  The display unit 2 includes a front cabinet 20, a liquid crystal panel 21, an optical sheet 22, a panel chassis 23, a light guide plate 24, a backlight chassis 27, and a middle cabinet 28.

  The liquid crystal panel 21 has a rectangular plate shape and is provided on a rectangular display surface that displays an image on one surface (front surface). The front cabinet 20 is a metal rectangular frame formed in the same size as the liquid crystal panel 21. In the following description, the display surface side of the liquid crystal panel 21 is the front side, and the other side is the back side.

  The optical sheet 22 is configured by laminating a diffusion sheet, a BEF (Brightness Enhance Film) sheet, a polarizing sheet, and the like.

  The panel chassis 23 is a resin-made rectangular frame formed in the same size as the liquid crystal panel 21.

  The light guide plate 24 is a flat plate made of a resin material having translucency such as PMMA (acrylic resin) or polycarbonate resin, and is formed to have the same size as the liquid crystal panel 21.

  The backlight chassis 27 is a metal box that is slightly larger than the liquid crystal panel 21 and formed in the same size as the panel chassis 23. The back surface of the heat sink 26 is attached to the lower end of the front surface of the backlight chassis 27, and the backlight chassis 27 holds the heat sink 26 from the back side.

  The middle cabinet 28 is a resin rectangular frame formed in the same size as the backlight chassis 27, and abuts on the periphery of the backlight chassis 27.

  The display unit 2 further includes a light source unit 25 provided on one end face and a heat sink 26 attached to the front surface of the light source unit 25 from the front side of the light source unit 25. The light source unit 25 is a light source substrate in which a plurality of light sources 25a are mounted on one surface of a rectangular plate-shaped substrate. The light source 25a is, for example, a light emitting diode (LED), and is provided side by side on the substrate along the longitudinal direction as shown in FIG. The light source unit 25 is fixed to the backlight chassis 27 with the mounting surface of the light source 25a facing upward.

  The heat sink 26 is fixed along the lower edge of the backlight chassis 27. The heat radiating plate 26 is a flat plate made of metal such as aluminum having a large heat capacity and high thermal conductivity.

  The display unit 2 includes a front cabinet 20, a liquid crystal panel 21, an optical sheet 22, a panel chassis 23, a light guide plate 24, a backlight chassis 27 to which a light source unit 25 and a heat radiating plate 26 are fixed, and a middle cabinet 28 in this order. Are fastened with screws or the like.

  With such a configuration, the peripheral edges of the liquid crystal panel 21 and the light guide plate 24 are sandwiched between the front cabinet 20, the middle cabinet 28, and the panel chassis 23 that are in contact with the liquid crystal panel 21 from the front side.

  The display device 1 is configured by attaching a rear cabinet 3 to the back side of the display unit 2. The rear cabinet 3 is made of a resin formed in a rectangular shallow dish having the same size as the backlight chassis 27, and covers the backlight chassis 27 and the middle cabinet 28 from the back side of the middle cabinet 28. With the configuration described above, in the display device 1 of the present embodiment, the light emitted from each light source 25a of the light source unit 25 passes through the light guide plate 24 and is irradiated to the liquid crystal panel 21 as uniform planar light.

  Next, the connecting structure of the display unit 2 and the rear cabinet 3 in which a plurality of places are fixed with screws or the like will be described in more detail. FIG. 3 is a rear perspective view showing the left edge portion of the rear surface of the display device 1. FIG. 4 is a rear view showing the left edge portion of the backlight chassis 27 fixed to the middle cabinet 28. As shown in FIGS. 3 and 4, the backlight chassis 27 includes a fixed seat (convex portion) 270 at a position spaced from the left edge to the right side, and an operation portion 271 fixed to the back side of the fixed seat 270. The fixed seat 270 is a base for fixing the operation unit 271. The operation unit 271 has a rectangular shape in plan view and includes a plurality of buttons 272 arranged in the vertical direction. Each button 272 is a button for power on / off, volume switching, program switching, and the like.

  The middle cabinet 28 includes positioning ribs (fitting protrusions) 281 erected on the back side at a position spaced from the left end to the right side. The positioning rib 281 has a rectangular shape that is long in the vertical direction in plan view. The cross-sectional shape of the positioning rib 281 in the vertical direction has a trapezoidal shape. The shape of the positioning rib 281 is not limited to this. For example, the positioning rib 281 may be elliptical or triangular in plan view. The positioning rib 281 includes an upper edge 282 and a lower edge 283.

  FIG. 5 is a front view showing the left edge portion of the rear cabinet 3. The rear cabinet 3 is fitted with a window hole 31 provided at a position spaced to the right from the left edge, and a rib surrounded on three sides between the left edge of the window hole 31 and the left edge of the rear cabinet 3. And a recess 32. Specifically, the fitting recess 32 is provided between the upper left corner of the window hole 31 and the left edge of the rear cabinet 3. The window hole 31 has a rectangular shape in plan view and corresponds to the operation unit 271. That is, the fitting recess 32 is provided in the vicinity of the fixed seat 270 and the window hole 31. The fitting recess 32 includes an upper rib 33 provided at the upper portion, a lower rib 34 provided at the lower portion, and a connection rib 35 connecting the upper rib 33 and the right end of the lower rib 34 to the left edge portion of the rear cabinet 3. It has a U-shape in plan view that is released. The upper rib 33 and the lower rib 34 are thinner toward the tip. The cross-sectional shapes of the upper rib 33 and the lower rib 34 in the left-right direction are triangular. The connecting rib 35 has a rectangular cross-sectional shape in the vertical direction. The fitting recess 32 corresponds to the positioning rib 281.

  FIG. 6 is a front view of the rear cabinet 3. A plurality of fitting recesses 32 are provided at the edge of the rear cabinet 3. In the large display device 1, if the thickness of the rear cabinet 3 is reduced, there is a problem that it is weak against pressure in the front and back direction. For this reason, the fitting recess 32 also has a role as a reinforcing member provided to reinforce the rear cabinet 3, and comes into contact with the rear surface of the middle cabinet 28 when assembled with the display unit 2 described later. The edge of the cabinet 3 is supported in the front-rear direction, and deformation of the edge of the rear cabinet 3 is prevented.

  FIG. 7 is a conceptual diagram showing the left edge portion of the display device 1 and shows the periphery of the operation unit 271. Below, the connection method of the backlight chassis 27, the middle cabinet 28, and the rear cabinet 3 is demonstrated. The backlight chassis 27 is connected to the middle cabinet 28 with screws. Next, the middle cabinet 28 aligns the operating portion 271 with the position of the window hole 31 and abuts the positioning rib 281 against the fitting recess 32. Since the positioning rib 281 has a trapezoidal shape, the positioning rib 281 is moved to the normal position. The edge portions 282 and 283 of the positioning rib 281 are locked by contacting the side surfaces of the upper rib 33 and the lower rib 34, the operation portion 271 is fitted in the window hole 31, and the rear cabinet 3 is screwed. Connect by fixing. That is, the display device 1 includes a fitting portion that is fitted to each other at the facing portion between the rear cabinet 3 and the display unit 2 and includes a fitting recess 32 and a positioning rib 281.

  According to this embodiment, the display unit 2 and the rear cabinet 3 can be easily assembled by fitting the fitting portions together.

  According to the present embodiment, the positioning rib 281 restricts the vertical movement of the rear cabinet 3 by bringing the edges 282 and 283 into contact with the inner surface of the U-shaped parallel side of the fitting recess 32, and thus the window hole 31. Can be prevented from climbing on the operation unit 271. Since the positioning rib 281 has a trapezoidal shape, the display unit 2 and the rear cabinet 3 can be easily assembled by the positioning rib 281 guiding the positioning rib 281 to the normal position.

  According to the present embodiment, since the fitting recess 32 is U-shaped, it can be easily integrally formed, so that the manufacturing cost can be reduced.

  In this embodiment, the fitting recess 32 is provided in the middle cabinet 28 and the positioning rib 281 is provided in the rear cabinet 3. However, the fitting recess 32 is provided in the rear cabinet 3 and the positioning rib 281 is provided in the middle cabinet 28. Also good.

  Moreover, although the fixed seat 270 which fixed the operation part 271 in this embodiment was demonstrated, it is not restricted to this. For example, the fixed seat 270 may fix an input / output terminal for connection to an external device.

Embodiment 2
FIG. 8 is a conceptual diagram showing the left edge portion of the display device 1 and shows the periphery of the operation unit 271. In the following, the configuration and operation other than those specifically described are the same as those of the first embodiment, and the description is omitted for the sake of brevity. The fitting recess 32 includes an upper rib 33 and a connecting rib 36 that connects tip portions of the lower rib 34. The positioning rib 281 has a rectangular shape that is long in the left-right direction in plan view. The positioning rib 281 includes a left edge 282 and a right edge 283. The positioning rib 281 is in contact with the connection ribs 35 and 36. That is, the positioning rib 281 restricts the movement of the rear cabinet 3 in the vertical and horizontal directions by bringing the edge part into contact with the rectangular parallel side of the fitting recess 32.

  According to this embodiment, since the rear cabinet 3 has the positioning ribs 281 that contact the edges 282 and 283 with the inner surfaces of the rectangular parallel sides of the fitting recess 32, the movement in the left-right direction is also restricted. It is possible to prevent the 31 edge from riding on the operation unit 271.

Embodiment 3
FIG. 9 is a conceptual diagram showing the left edge portion of the display device 1 and shows the periphery of the operation unit 271. In the following, the configuration and operation other than those specifically described are the same as those of the second embodiment, and the description is omitted for the sake of brevity. The positioning rib 281 has a cross shape in plan view. The positioning rib 281 includes an upper edge 282, a lower edge 283, a left edge 284, and a right edge 285. Upper, lower, left and right edges 282, 283, 284 and 285 of the positioning rib 281 are in contact with the inner surface of the fitting recess 32. That is, the positioning rib 281 restricts the vertical movement of the rear cabinet 3 by bringing the edges 282, 283, 284 and 285 into contact with the inner surfaces of the rectangular sides of the fitting recess 32.

  According to this embodiment, when injection molding is performed because the positioning rib 281 has a cross shape in plan view, the pressure injected from the front surface is uniform with respect to the surface. For this reason, since it becomes difficult for the pressure of injection molding to concentrate on one point, it can prevent that an unevenness | corrugation is produced | generated by the back side of the rear cabinet 3. FIG. As a result, it is possible to avoid manufacturing the display device 1 having a poor appearance.

  The display device 1 according to the present invention includes a display unit 2 that displays an image on the front surface and a cover 3 that covers the display unit 2 from the back side. The display unit 2 is opened on the cover 3 on the back of the display unit 2. In the display device 1 in which the convex portion 270 exposed to the outside through the window hole 31 is provided, provided in the vicinity of the convex portion 270 and the window hole 31, the cover 3 and the display unit 2 It is characterized by including a fitting portion that fits to each other at the facing portion.

  According to this embodiment, the display unit 2 and the rear cabinet 3 can be easily assembled by fitting the fitting portions together.

  In the display device 1 according to the present invention, the fitting portion includes a fitting recess provided in one of the cover 3 or the display unit 2 and a fitting protrusion provided in the other and fitted in the fitting recess. And a section.

  According to the present embodiment, the positioning rib 281 restricts the vertical movement of the rear cabinet 3 by bringing the edges 282 and 283 into contact with the inner surface of the U-shaped parallel side of the fitting recess 32, and thus the window hole 31. Can be prevented from climbing on the operation unit 271.

  In the display device 1 according to the present invention, the fitting recess 32 has a U-shape, and the fitting protrusion 281 has a plate shape having edges 282 and 283 that are in contact with parallel sides of the U-shape. And

  According to the present embodiment, since the fitting recess 32 is U-shaped, it can be easily integrally formed, so that the manufacturing cost can be reduced.

  In the display device 1 according to the present invention, the fitting concave portion 32 has a rectangular frame shape, and the fitting convex portion 281 has a plate shape having edge portions 282 and 283 that are in contact with the parallel sides of the rectangle. And

  According to this embodiment, since the rear cabinet 3 has the positioning ribs 281 that contact the edges 282 and 283 with the inner surfaces of the rectangular parallel sides of the fitting recess 32, the movement in the left-right direction is also restricted. It is possible to prevent the 31 edge from riding on the operation unit 271.

  In the display device 1 according to the present invention, the fitting concave portion 32 has a rectangular frame shape, and the fitting convex portion 281 has a cross shape having edge portions 282, 283, 284, and 285 that abut each side of the rectangle. It is characterized by doing.

  According to this embodiment, when injection molding is performed because the positioning rib 281 has a cross shape in plan view, the pressure injected from the front surface is uniform with respect to the surface. For this reason, since it becomes difficult for the pressure of injection molding to concentrate on one point, it can prevent that an unevenness | corrugation is produced | generated by the back side of the rear cabinet 3. FIG. As a result, it is possible to avoid manufacturing the display device 1 having a poor appearance.

  The display device according to the present invention is characterized in that the convex portion 270 is a fixed seat 270 for fixing an operation portion 271 for operating the display device 1.

  According to this embodiment, since the edge of the window hole does not ride on the operation unit 271, damage to the operation unit 271 can be prevented.

  A television receiver according to the present invention includes the above-described display device 1 and a receiving unit 290 that receives a television broadcast, and displays video on the display unit 2 based on the television broadcast received by the receiving unit 290. It is characterized by being displayed.

  The embodiment disclosed this time is to 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 meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Display unit 270 Fixed seat (convex part)
271 Operation part 281 Positioning rib (fitting convex part)
282 Edge 283 Edge 284 Edge 285 Edge 3 Rear cabinet (cover)
31 Window hole 32 Fitting recess 290 Receiver

Claims (7)

A display unit that displays an image on the front surface and a cover that covers the display unit from the back side, and a protrusion that is exposed to the outside through a window hole formed in the cover on the back of the display unit In the provided display device,
Provided in the vicinity of the convex portion and the window hole, and provided with a fitting portion that fits to each other at the facing portion of the cover and the display unit ,
The fitting portion is
A fitting recess provided in the cover;
A fitting projection provided on the display unit and fitted into the fitting depression;
With
The fitting recess has two opposing ribs,
The thickness of the said 2 rib is thin toward the edge part of the said cover body, The display apparatus characterized by the above-mentioned . A display unit that displays an image on the front surface and a cover that covers the display unit from the back side, and a protrusion that is exposed to the outside through a window hole formed in the cover on the back of the display unit In the provided display device,
A plurality of fitting portions that are fitted to each other at opposing portions of the cover body and the display unit,
At least one of the plurality of fitting portions is provided in the vicinity of the convex portion and the window hole,
Each of the plurality of fitting portions is
A fitting recess provided in the cover;
A fitting projection provided on the display unit and fitted into the fitting depression;
With
The fitting recess has two opposing ribs,
The thickness of the two ribs decreases toward the edge of the cover body
A display device. The fitting recess is U-shaped,
The display device according to claim 1 , wherein the fitting convex portion has a plate shape having an edge portion that abuts against a U-shaped parallel side. The fitting recess has a rectangular frame shape,
The fitting protrusions, a display device according to claim 1 or claim 2 forming a plate shape having abutting edges of a rectangular parallel sides. The fitting recess has a rectangular frame shape,
The fitting protrusions, a display device according to claim 1 or claim 2 forming a cross shape having abutting edges to the rectangle of each side.   The display device according to any one of claims 1 to 5, wherein the convex portion is a fixed seat for fixing an operation unit for operating the display device. A display device according to any one of claims 1 to 6,
A receiver for receiving television broadcasts,
A television receiver characterized in that an image is displayed on the display unit based on a television broadcast received by the receiving unit.

Images