JP5650307B1 - Thin display device - Google Patents

Abstract

Provided is a technology capable of attaching a wireless communication unit using a space in which a speaker is arranged in a thin display device including a speaker. When not screwed, a boss tip portion 126a of an attachment fixing boss 126 and a boss tip contact portion 165b of a boss mounting portion 165 are slightly separated from each other. At this time, the outer edge arrangement surface 161a and the arrangement portion front end surface 125a are in contact with each other. When the fixing openings 165a and 126b are screwed together, the boss tip portion 126a and the boss tip contact portion 165b come into contact with each other. At this time, the attachment base surface 161 is relatively close to the direction of the cover main body 121 by the distance, and the attachment base surface 161 is pulled, so that the sealability between the attachment base surface 161 and the attachment placement portion 125 is good. Maintained. [Selection] Figure 13

Description

  The present invention relates to a technique for fixing a wireless communication unit in a thin display device.

  In a thin display device typified by a liquid crystal television, a wireless communication unit used for wireless communication such as remote control communication is often arranged in a resin frame under a front cabinet in front of the display device body.

  However, in recent years, the progress of thinning, lightening, and narrowing the frame of display devices has been further advanced. In such a situation, the space in which the wireless communication unit has been conventionally arranged has become narrow, and it has become difficult to secure a mounting space. In recent years, in addition to remote control communication, transmission / reception of synchronization signals for 3D video, wireless LAN, and Bluetooth communication (registered trademark) have been performed, and it is important to secure an arrangement space for these wireless communication units. It has become to.

  Various techniques have been proposed for the arrangement of wireless communication units and the like from the viewpoint of effective use of space. For example, there is a technique in which a light receiving device that receives a light beam of a signal source is built in a speaker box and the directivity is expanded (see, for example, Patent Document 1). More specifically, a knob is provided at one end of an operation lever formed in an L shape, and a long hole is provided at the other end, and is pivotally supported on the front plate of the fixed chassis. On the other hand, a rotating chassis to which a light receiving unit is attached is provided. The rotating chassis is rotatably held on the front plate of the fixed chassis via a rotating shaft. When the knob is turned to the left or right, the drive piece engaged with the long hole is tilted, and the rotating chassis is rotated up and down. With such a configuration, the optical axis of the light receiving unit is inclined upward or downward, and the light receiving range of the light beam can be arbitrarily set.

JP-A-6-152533

  By the way, in addition to the narrowing of the frame as described above, it is difficult to arrange a wireless communication unit such as an infrared ray with a dedicated space in front of the main body from the viewpoint of the design restriction of the housing (particularly the front cabinet). There was a case.

  In the technique disclosed in Patent Document 1, a light receiving unit is arranged in a speaker box. However, applying this technique as it is is from the viewpoint of ensuring sealing performance and functionality at the time of manufacture, and in recent years. As described above, in a situation where the narrowing of the frame and the thinning are remarkable, another technique is not realistic and is required.

  This invention is made | formed in view of the above situations, Comprising: It aims at providing the technique which solves the said subject.

The thin display device of the present invention includes a cabinet at the outer edge of the display unit, a speaker box disposed so as to cover the back of the cabinet, and wireless communication disposed within an area surrounded by the cabinet and the speaker box. A unit, and an attachment that is a part of an enclosure that includes the speaker box and the cabinet, and the cabinet constitutes a part of the enclosure and the wall surface on which the attachment is disposed on the back An attachment placement portion formed so as to surround a predetermined region and a boss extending from the region surrounded by the attachment placement portion, and the attachment is disposed by contacting the tip of the boss, A fixing part to be screwed to the attachment placement part And, before the said attachment and the attachment arrangement portion is fixed screw, the spaced apart and the distal end and the fixed portion of the boss, the attachment includes an attachment base portion fixed to the attachment arrangement of the cabinet And a rib extending forward from the attachment base portion and fixing the wireless communication unit to the extended end portion.

  ADVANTAGE OF THE INVENTION According to this invention, in the thin display apparatus provided with a speaker, the technique which can attach a radio | wireless communication unit using the space where a speaker is arrange | positioned can be provided.

It is a figure which shows the liquid crystal television based on 1st Embodiment. It is a figure which shows the front cover of the state which attached the speaker box cover to the back based on 1st Embodiment. It is sectional drawing (X1-X1 sectional drawing of FIG. 2) of the front cover of the state which attached the speaker box cover to the back based on 1st Embodiment. It is sectional drawing (X3-X3 sectional drawing of FIG. 2) of the front cover of the state which attached the speaker box cover to the back based on 1st Embodiment. It is a figure which shows the front cover of the state which removed the speaker box cover of the back based on 1st Embodiment. It is sectional drawing (Y1-Y1 sectional drawing of FIG. 5) of the front cover of the state which removed the speaker box cover of the back based on 1st Embodiment. It is sectional drawing (Y3-Y3 sectional drawing of FIG. 5) of the front cover of the state which removed the speaker box cover of the back based on 1st Embodiment. It is a perspective view of the attachment in the state where IR unit was attached concerning a 1st embodiment. It is a figure which shows the attachment of the state in which the IR unit was attached based on 1st Embodiment. It is a figure which shows the attachment of the state from which IR unit was removed based on 1st Embodiment. It is a figure which expands and shows the area | region in which the attachment arrangement | positioning part by which the attachment for IR units is arrange | positioned based on 1st Embodiment was formed. It is a three-view figure of the attachment based on 2nd Embodiment. It is a figure which shows the state which the attachment based on 2nd Embodiment was attached to the attachment arrangement | positioning part. It is a perspective view which shows the state which the attachment based on 2nd Embodiment was attached to the attachment arrangement | positioning part.

  Next, modes for carrying out the present invention (hereinafter, simply referred to as “embodiments”) will be specifically described with reference to the drawings.

<First Embodiment>
FIG. 1 is a diagram showing a liquid crystal television 10. As illustrated, the liquid crystal television 10 includes a front cover 20 in a lower region of the display panel 12. The front cover 20 includes a cover main body 21 and a cover mounting portion 22.

  A speaker cover 30 and a trim 33 are disposed on the cover body 21. A speaker unit to be described later is disposed inside the speaker cover 30. Further, an IR cover 75 is attached in the vicinity of the left end portion (region A) of the speaker cover 30, and an IR unit 70 (see FIG. 2 and the like) to be described later is disposed on the back inner side. The IR unit 70 is used for infrared communication with a remote controller, 3D glasses, or the like. In the present embodiment, the liquid crystal television 10 is illustrated as a thin display device, but the present invention can also be applied to an organic EL television or the like.

  FIG. 2 is a diagram showing the front cover 20 with the speaker box cover 40 attached to the back surface. 2A is a front view, FIG. 2B is a rear view, FIG. 2C is a bottom view, and FIG. 2D is an X2-X2 cross-sectional view of FIG. 2A.

  FIG. 3 is a cross-sectional view of the front cover 20 with the speaker box cover 40 attached to the back surface, and is a cross-sectional view taken along the line X1-X1 in FIG. FIG. 4 is a cross-sectional view of the front cover 20 with the speaker box cover 40 attached to the back surface, and is a cross-sectional view taken along the line X3-X3 of FIG.

  FIG. 5 is a view showing the front cover 20 with the rear speaker box cover 40 removed. 5 (a) is a front view, FIG. 5 (b) is a rear view, FIG. 5 (c) is a bottom view, and FIG. 5 (d) is a Y2-Y2 cross-sectional view of FIG. 5 (a). FIGS. 5A to 5D correspond to FIGS. 2A to 2D described above.

  FIG. 6 is a cross-sectional view of the front cover 20 with the speaker box cover 40 on the back surface removed, and is a cross-sectional view of Y1-Y1 in FIG. It is a figure of the state which removed the speaker box cover 40 from the state of FIG. FIG. 7 is a cross-sectional view of the front cover 20 with the speaker box cover 40 on the back surface removed, and is a cross-sectional view along Y3-Y3 in FIG. It is a figure of the state which removed the speaker box cover 40 from the state of FIG.

  For example, as shown in FIG. 2, two left and right speaker box covers 40 and a back cover 50 between them are arranged and attached to the back of the front cover 20. The front cover 20, the speaker box cover 40, and the back cover 50 are resin molded products.

  A first speaker body 47 and a second speaker body 48 are arranged inside the speaker box cover 40, more specifically, in a space covered with the front cover 20 and the speaker box cover 40.

  The area where the first speaker body 47 is disposed and the area where the second speaker body 48 is disposed are formed as independent spaces. That is, in the region where the first speaker body 47 is arranged, the front cover 20 and the speaker box cover 40 form a first speaker box 45 (enclosure) of the speaker system. Similarly, in the region where the second speaker main body 48 is disposed, the front cover 20 and the speaker box cover 40 form a second speaker box 46.

  An IR unit 70 is disposed inside one of the first speaker boxes 45 (here, the first speaker box 45 on the left side of FIG. 2A or FIG. 2D). Specifically, a rib-shaped attachment arrangement portion 25 is formed in a predetermined region on the back surface of the cover main body 21. An attachment 60 to which the IR unit 70 is attached is fixed to the attachment placement unit 25. As a result, in the first speaker box 45 on the left side of the figure, the attachment placement unit 25 functions as a partial structure of the enclosure.

  FIG. 8 is a perspective view of the attachment 60 with the IR unit 70 attached.

  FIG. 9 is a view showing the attachment 60 with the IR unit 70 attached thereto. 9 (a) is a front view, FIG. 9 (b) is a bottom view, FIG. 9 (c) is a Z1-Z1 sectional view of FIG. 9 (a), and FIG. 9 (d) is Z2- of FIG. 9 (a). It is Z2 sectional drawing.

  FIG. 10 is a diagram showing the attachment 60 with the IR unit 70 removed. 10 (a) is a front view, FIG. 10 (b) is a rear view, FIG. 10 (c) is a plan view, FIG. 10 (d) is a bottom view, FIG. 10 (e) is a right side view, and FIG. ) Is a left side view, and FIG. 10G is a W1-W1 cross-sectional view of FIG.

  FIG. 11 is an enlarged view showing a region where the substantially L-shaped attachment arrangement portion 25 where the attachment 60 for the IR unit 70 is arranged is formed.

  The attachment 60 is a resin molded product, and includes a plate-like attachment base portion 61, first and second fixing ribs 62, 63, and first and second rib structures extending vertically from the attachment base portion 61 to the front. Second guide walls 67 and 68 are provided.

  More specifically, the attachment base 61 is substantially L-shaped (inverted L-shaped in FIG. 9 and the like), and a fixing opening 65 is formed in the inner region of the bent portion. First and second fixing ribs 62 and 63 are vertically formed on the front surface side of the attachment base portion 61. More specifically, first fixing ribs 62 are formed in the vicinity of the right and lower outer edges of the region corresponding to the L-shaped laterally extending portion. Moreover, the 2nd fixing rib 63 is formed in the left side and upper part of the L-shaped part extended horizontally.

  The first and second fixing ribs 62 and 63 are formed at the same height, and are arranged so that the substrate surface of the IR unit 70 is in contact with the tip portion thereof. Further, in order to fix the substrate of the IR unit 70, the first and second fixing ribs 62 and 63 are formed with claw-shaped locking portions 62a and 63a, respectively. The substrate of the IR unit 70 has locking recesses 72 and 73 for locking the locking portions 62a and 63a. A positioning piece 62b is formed on the first fixing rib.

  A first guide wall 67 is formed in a region on the right side of the L-shaped vertically extending region, and a second guide wall 68 is formed in a left region. The first guide wall 67 is formed continuously with the first fixing rib 62, but is formed lower than the height of the first fixing rib 62. Similarly, the second guide wall 68 is formed continuously with the second fixing rib 63, but is formed lower than the height of the second fixing rib 63. The first and second guide walls 67 and 68 have a line shaping structure for wiring, and guide the wiring of the IR unit 70 to the wiring opening 28 shown in FIGS. 4 and 7.

  Further, the left portion of the first fixing rib 62 is formed to be separated from the second fixing rib 63 by a predetermined distance. That is, the first fixing rib 62 is not formed in the vicinity of the left end portion of the L-shaped side extending portion.

  Therefore, a communication path from the upper right to the lower left of the attachment 60 is formed in a state where the IR unit 70 is disposed on the first and second fixing ribs 62 and 63. The upper right portion of the communication path communicates with the wiring opening 28 described above.

  Further, a box cover fixing boss 69 is formed on the back side of the attachment base portion 61, and a screw (screw) is fastened to fix the speaker box cover 40.

  With the attachment base portion 61 of the attachment 60 attached to the attachment placement portion 25, the sealed state of the first speaker box 45 is secured. That is, the IR unit 70 is disposed in the front portion of the attachment placement unit 25. Further, an IR opening 27 is formed on the front side, and an IR cover 75 is attached. Further, several openings are formed in the front cover 20 for wiring the IR unit 70. Therefore, if sealing such as the absence of the attachment base 61 is not taken into consideration, the function of the first speaker box 45 as an enclosure becomes inappropriate. However, in this embodiment, the sealed state of the first speaker box 45 can be ensured.

  In the IR unit 70, an infrared transmitting / receiving element is disposed on a substrate on which a predetermined circuit is formed. Since the IR unit 70 is disposed at the tip portions of the first and second fixing ribs 62 and 63, the infrared transmitting / receiving element of the IR unit 70 can be positioned to the immediate vicinity of the IR cover 75.

  When the IR unit 70 is disposed at the left and right ends of the liquid crystal television 10 as in the present embodiment instead of the center in the left-right direction, it is brought close to the surface of the front cover 20 from the viewpoint of communication characteristics such as directivity. Is preferred. Also in this respect, the present embodiment can achieve good performance. Further, even when the shape of the IR unit 70 is changed due to the change of the infrared transmitting / receiving element or the like, it is possible to cope to some extent by changing only the first and second fixing ribs 62 and 63. Therefore, the design change of the front cover 20 can be avoided, and only the design change of the attachment 60, that is, the small part design change can be dealt with.

  In the first speaker box 45, the IR unit 70 is arranged in the attachment arrangement unit 25 using an attachment 60 that functions as a seal cover (SEAL cover). As a result, the performance of the speaker unit can be ensured as desired. That is, since the attachment base portion 61 of the attachment 60 becomes a structure as a part of the enclosure of the first speaker box 45, an opening is formed according to the arrangement structure of the IR unit 70, and the sealing performance is lowered. It is avoiding.

  Note that the volume in the speaker box is an element that determines the characteristics of the speaker box (the first and second speaker boxes 45 and 46). Since the frequency characteristics and output of the speaker change depending on the movement of air in the speaker box, the left and right speaker characteristics need to be the same as much as possible in the stereo speaker. When the IR unit 70 that is a wireless communication unit is arranged in the speaker box, it is necessary to consider that the volume and the internal shape of the speaker box are not different from each other depending on the installation of the wireless communication unit. That is, it is necessary to make the speaker box have the same volume and the same internal shape regardless of whether or not the IR unit 70 is arranged. Therefore, in this embodiment, after the IR unit 70 is arranged at the end of one speaker as described above and the attachment 60 (seal cover) is attached, the shape of the ends of both the left and right speakers (here, both the left and right) The internal shape of the first speaker box 45 is the same. As a result, the volume and internal shape of the left and right speaker boxes are the same, and the sound quality of the speakers can be maintained appropriately. In order to obtain the same structure, the shape of the front cover 20 on the side where the IR unit 70 is not disposed is formed in accordance with the structure on the side where the IR unit 70 is disposed, that is, the structure of the attachment 60 (attachment base portion 61). May be. Further, the same structure as that on the side where the IR unit 70 is arranged may be adopted on the side where the IR unit 70 is not arranged. In other words, the back structure (speaker box portion) of the front cover 20 is the same on the left and right, and one has the attachment 60 with the IR unit 70 attached, and the other has only the attachment 60 without the IR unit 70 attached. Also good.

  Further, when the IR unit 70 is arranged as far as the surface of the front cover 20, it is necessary to work carefully using a jig or the like if it is a conventional general technique. However, in this embodiment, the attachment 60 to which the IR unit 70 is attached can be arranged up to a desired position, that is, the front cover 20 (the IR cover 75) just by placing and fixing the attachment 60 to the attachment placement unit 25. The workability is improved.

  Furthermore, since the IR unit 70 is disposed on the attachment 60, so-called chatter (vibration / noise) due to substrate resonance at the time of sound output can be avoided.

<Second Embodiment>
12A and 12B are three views of the attachment 160 according to this embodiment. FIG. 12A is a front view, FIG. 12B is a bottom view, and FIG. 12C is a side view. 13A and 13B are views showing a state in which the attachment 160 is attached to the attachment placement portion 125. FIG. 13A is a plan view, FIG. 13B is a cross-sectional view taken along line D1-D1 of FIG. 13 (c) is a cross-sectional view taken along the line D2-D2 of FIG. 13 (a). FIG. 14 is a perspective view showing a state in which the attachment 160 is attached to the attachment placement portion 125, and corresponds to FIG. 13 (a). In the following description, the description of the configuration and function similar to those of the first embodiment will be omitted as appropriate, and the description will be focused on the fixing structure between the attachment 160 and the cover main body 121 that is characteristic of the present embodiment. .

  As in the first embodiment, a rib-like attachment placement portion 125 is formed in a predetermined area on the back surface of the cover main body 121 of the front cover 120 so as to surround the predetermined area in a frame shape. The attachment 160 is fixed to the attachment placement unit 125. In the cover main body 121, a region surrounded by the attachment placement portion 125 is referred to as a cover-side enclosure surface 129 for convenience.

  Specifically, the attachment 160 is a resin molded product, and includes a rectangular plate-shaped attachment base portion 161, a plate-shaped guide wall 167 that extends vertically forward from the attachment base portion 161, and the first and first attachments. Two fixing ribs 162 and 163 are provided.

  The guide wall 167 is formed in a substantially U shape in a bottom view at a position slightly inside the outer edge of the rectangular attachment base surface 161. Here, the U-shape is inverted, and the guide wall 167 is not formed on the upper side portion. Note that, on the left and right sides and the lower side of the attachment base surface 161, the region from the outer edge to the guide wall 167 and the region of the upper side corresponding to the region are the outer edge arrangement surface 161a. When the attachment base surface 161 is attached to the attachment placement portion 125, the placement portion distal end surface 125a, which is the flat surface of the tip of the attachment placement portion 125, contacts the outer edge placement surface 161a.

  An IR unit 70 (not shown) is attached to the locking portions 162a and 163a at the tips of the first and second fixing ribs 162 and 163, as in the first embodiment.

  A box cover fixing boss 169 extending upward (in the direction of the back surface of the liquid crystal television 10) is provided at the approximate center of the attachment base surface 161. A boss mounting portion 165 is provided near the box cover fixing boss 169. The boss mounting portion 165 is used for fixing to the attachment base surface 161 with a screw (not shown).

  Specifically, the boss mounting portion 165 has a fixing opening that penetrates the attachment base surface 161 in the vicinity of the center of the shape slightly convex on the upper surface side of the attachment base surface 161 (the side opposite to the cover main body 121). 165a is formed.

  On the bottom surface side of the attachment base surface 161, a boss tip contact portion 165b having a circular concave shape is formed so as to surround the periphery of the fixing opening 165a.

  On the other hand, in the cover main body 121, a substantially cylindrical attachment fixing boss 126 is provided to extend from the cover side enclosure surface 129 at a position corresponding to the boss mounting portion 165 inside the attachment placement portion 125. In a state where the attachment 160 is attached to the cover main body 121, the boss leading end portion 126 a that is the leading end surface of the attachment fixing boss 126 faces the attachment placement portion 125. In addition, a fixing opening 126b used for screw fixing is formed in the boss tip 126a.

  When not screwed, the boss tip 126a of the attachment fixing boss 126 and the boss tip abutting portion 165b of the boss mounting portion 165 are slightly separated as shown in FIGS. 13B and 13C. doing. At this time, the outer edge arrangement surface 161a and the arrangement portion front end surface 125a are in contact with each other.

  When the fixing openings 165a and 126b are screwed together, the boss tip portion 126a and the boss tip contact portion 165b come into contact with each other. At this time, since the attachment base surface 161 is relatively close to the direction of the cover main body 121 by the distance, the attachment base surface 161 is pulled, so that the attachment base surface 161 and the attachment placement portion 125 have good sealing performance. Maintained. As a result, no sealing material is required for sealing the attachment base surface 161 and the attachment placement portion 125. Further, since the boss mounting portion 165 and the box cover fixing boss 169 are formed on the attachment base surface 161, the work of mounting the attachment 160 to the cover body 121 is reduced.

  In the present embodiment, in the attachment 160, the guide walls 167 are formed on three sides (left and right and lower sides) of the attachment base surface 161. The adhesion between the guide wall 167 and the attachment placement portion 125 contributes to the sealing performance. On the other hand, the guide wall 167 is not formed on the upper side. Therefore, in this region, it is necessary to ensure good sealing performance only by joining the outer edge arrangement surface 161a and the arrangement portion front end surface 125a. From this point of view, the boss mounting portion 165 is formed not on the center of the attachment base surface 161 but on the upper side.

  The guide wall 167 may be omitted. In this case, the boss mounting portion 165 is preferably at the center of the attachment base surface 161. Further, from the viewpoint of improving the sealing performance, a slight build-up shape (such as a convex shape) may be formed on the outer portion of the guide wall 167 and at a certain distance from the attachment base surface 161.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to combinations of the respective components and the like, and such modifications are within the scope of the present invention.

  For example, in the present embodiment, the IR unit 70 is exemplified as the wireless communication unit, but the present invention can also be applied to other types of wireless communication units such as a wireless LAN and Bluetooth (registered trademark). In addition, from the viewpoint of securing the airtightness of the first speaker box 45 and the like, an adhesive rubber material may be provided at the attachment portion of various structural members. Moreover, although this embodiment is applied to the front cover from which the lower part of the front cabinet is separated, it is naturally applicable to a type of cabinet in which the front cover is not separated.

10 LCD TV 12 Display panel 20, 120 Front cover (cabinet)
21, 121 Cover body 22 Cover mounting portion 25, 125 Attachment placement portion 27 IR opening 28 Wiring opening 30 Speaker cover 33 Trim 40 Speaker box cover 45 First speaker box 46 Second speaker box 47 First speaker body 48 Second speaker main body 50 Rear cover 60, 160 Attachment 61, 161 Attachment base 62, 162 First fixing rib 62a, 63a, 162a, 163a Locking portion 62b Positioning piece 63, 163 Second fixing rib 65 Fixing opening 67 First guide wall 68 Second guide wall 69, 169 Box cover fixing boss 70 IR units 72, 73 Locking recess 75 IR cover 125a Arrangement portion front end surface 126 Attachment fixing boss 126a Boss front end 126b fixing opening 129 cover side enclosure surface 161a outer placement surface 165 boss attachment portion 165a fixing opening 165b boss tip end abutting portion 167 guide wall

Claims (1)

A cabinet on the outer edge of the display,
A speaker box arranged to cover the back of the cabinet;
A wireless communication unit disposed inside an area surrounded by the cabinet and the speaker box;
An attachment that is part of an enclosure comprising the speaker box and the cabinet;
Have
The cabinet constitutes a part of the enclosure and extends from an attachment placement portion formed so as to surround a predetermined region with a wall surface shape on which the attachment is placed on a back surface, and an area surrounded by the attachment placement portion With a boss,
The attachment has a fixed portion that is screwed to the attachment placement portion and arranged to contact the tip of the boss.
In a state before the attachment and the attachment placement portion are fixed with screws, the tip of the boss and the fixing portion are separated from each other ,
The attachment includes an attachment base portion fixed to an attachment placement portion of the cabinet, and a rib extending forward from the attachment base portion and fixing the wireless communication unit to an extended end portion. > A thin display device characterized by that.

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