JP2009139760A - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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JP2009139760A
JP2009139760A JP2007317502A JP2007317502A JP2009139760A JP 2009139760 A JP2009139760 A JP 2009139760A JP 2007317502 A JP2007317502 A JP 2007317502A JP 2007317502 A JP2007317502 A JP 2007317502A JP 2009139760 A JP2009139760 A JP 2009139760A
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liquid crystal
crystal panel
frame
dust
display device
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Hiroshi Takahashi
洋 高橋
Kenta Moribe
研太 守部
Kenichiro Ito
賢一郎 伊東
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Sharp Corp
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Sharp Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which can enhance the dust-proofing property of a peripheral edge side of a liquid crystal panel in a configuration in which a peripheral edge of the liquid crystal panel is held on both front and rear sides by a frame edge of a front cabinet portion and a holder holding a peripheral edge rear side of the liquid crystal panel. <P>SOLUTION: The liquid crystal display device includes: the liquid crystal panel 1 having a display surface 1a on its front side; a lamp 21 disposed on the rear side of the liquid crystal panel 1; a case body 22 housing and supporting the lamp 21; a cabinet 5 shielding the peripheral edge and rear side of the liquid crystal panel 1; and the frame-shaped holder 4 disposed on the rear side of the liquid crystal panel 1 in the cabinet 5 and holding the peripheral edge rear side of the liquid crystal panel 1. The cabinet 5 has a frame portion 51 disposed on the peripheral edge front side of the liquid crystal panel 1 and clamping the peripheral edge of the liquid crystal panel 1 on front and rear sides with the holder 4, and is provided with a dust-proof cylinder portion 10 protecting the part between the frame portion 51 on the peripheral edge side of the liquid crystal panel 1 and the peripheral edge of the case body 22 against dust, thereby enhancing the dust-proofing property of the peripheral edge side of the liquid crystal panel 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は液晶テレビジョン等の液晶表示装置に関する。   The present invention relates to a liquid crystal display device such as a liquid crystal television.

液晶テレビジョン等の液晶表示装置は、前側に表示面を有し直方体をなす液晶パネルと、該液晶パネルの周縁部前側を保持する前保持枠体と、液晶パネルの周縁部後側を保持する後保持枠体と、該後保持枠体の後側に配されている光源部と、液晶パネルの周縁部前側に配される額縁部を有し、液晶パネルの周縁部及び光源部の後側を隠蔽するキャビネットとを備える（例えば、特許文献１、２参照）。   A liquid crystal display device such as a liquid crystal television has a liquid crystal panel having a rectangular parallelepiped with a display surface on the front side, a front holding frame that holds the front side of the peripheral part of the liquid crystal panel, and a rear side of the peripheral part of the liquid crystal panel A rear holding frame, a light source arranged on the rear side of the rear holding frame, and a frame arranged on the front side of the peripheral edge of the liquid crystal panel; (See, for example, Patent Documents 1 and 2).

前保持枠体は、液晶パネルの周縁部前面に対向する環板部、及び該環板部の外縁から後方へ延出されている角筒部を有する。後保持枠体は、液晶パネルの周縁部後面に対向する環板部、及び該環板部の外縁から後方へ延出されている角筒部を有し、前保持枠体及び後保持枠体の周方向複数箇所が雄螺子で結合されることにより液晶パネルの周縁部を前後で挾持してあり、また、前保持枠体及び後保持枠体夫々の角筒部により液晶パネルの周縁側を隠蔽し、キャビネットに開設されている放熱孔等からキャビネット内へ侵入した塵埃が液晶パネルの後面に付着するのを防ぐように構成されている。   The front holding frame has an annular plate portion facing the front surface of the peripheral edge of the liquid crystal panel, and a rectangular tube portion extending rearward from the outer edge of the annular plate portion. The rear holding frame has a ring plate portion facing the rear surface of the peripheral portion of the liquid crystal panel, and a rectangular tube portion extending rearward from the outer edge of the ring plate portion, and includes a front holding frame and a rear holding frame. The peripheral part of the liquid crystal panel is held in front and back by being coupled with a plurality of peripheral screws in the circumferential direction, and the peripheral side of the liquid crystal panel is held by the square tube part of each of the front holding frame and the rear holding frame. It is configured to conceal and prevent dust that has entered the cabinet from the heat dissipation holes or the like established in the cabinet from adhering to the rear surface of the liquid crystal panel.

光源部は上下に離隔して並置されている複数のランプと、前側が開放され、該ランプを支持するケース体とを有し、該ケース体の周縁部に前記キャビネットが取付けられている。   The light source section has a plurality of lamps arranged in parallel with each other in the vertical direction and a case body that is open on the front side and supports the lamp, and the cabinet is attached to the peripheral edge of the case body.

キャビネットは、前保持枠体の環板部（実質的には液晶パネルの周縁部前側）を隠蔽する額縁部、及び該額縁部の外縁から後方へ延出され、前保持枠体より大形の角筒部を有するキャビネット前分体と、ケース体の後側を隠蔽する皿状板部、及び該皿状板部の外縁から前方へ延出され、前保持枠体より大形の角筒部を有するキャビネット後分体とを備え、キャビネット前分体の角筒部及びキャビネット後分体の角筒部同士が嵌合され、額縁部及び皿状板部がケース体の周縁部に複数本の雄螺子で結合されている。
特開２００６−２１５５１２号公報 特開２００６−２１５４９２号公報 The cabinet extends rearward from the frame portion that conceals the ring plate portion of the front holding frame (substantially the front side of the peripheral edge of the liquid crystal panel) and the outer edge of the frame, and is larger than the front holding frame. A cabinet front part having a square tube part, a dish-like plate part that conceals the rear side of the case body, and a square tube part that extends forward from the outer edge of the dish-like plate part and is larger than the front holding frame The square tube part of the cabinet front part and the square tube part of the cabinet rear part are fitted to each other, and a plurality of frame parts and dish-like plate parts are provided on the peripheral part of the case body. They are connected with male screws.
JP 2006-215512 A JP 2006-215492 A

ところが、特許文献１、２のように構成された従来の液晶表示装置は、前保持枠体及び後保持枠体が液晶パネルの周縁部を前後で挾持することによりパネルモジュールが形成され、該パネルモジュールがキャビネット内に配されているため、液晶表示装置の薄型化が制限され、改善策が要望されていた。   However, in the conventional liquid crystal display device configured as in Patent Documents 1 and 2, a panel module is formed by the front holding frame and the rear holding frame holding the peripheral edge of the liquid crystal panel forward and backward, and the panel module is formed. Since the modules are arranged in the cabinet, thinning of the liquid crystal display device is limited, and improvement measures have been demanded.

そこで、本発明の出願人はパネルモジュールを構成する前保持枠体をなくし、キャビネット前分体の額縁部と後保持枠体とにより液晶パネルの周縁部を前後に挾持することにより薄型化することができるように構成した液晶表示装置を先に開発した。   Accordingly, the applicant of the present invention eliminates the front holding frame constituting the panel module, and thins the liquid crystal panel by holding the peripheral edge of the liquid crystal panel back and forth with the frame part and the rear holding frame of the cabinet front part. We first developed a liquid crystal display device that can be used for this purpose.

しかし、先に開発された液晶表示装置にあっては、パネルモジュールを構成する前保持枠体がないため、液晶パネル周縁側の防塵性が低下することになり、さらなる改善策が要望されていた。   However, in the previously developed liquid crystal display device, since there is no front holding frame that constitutes the panel module, the dustproof property on the peripheral side of the liquid crystal panel is lowered, and further improvement measures have been demanded. .

本発明は斯かる事情に鑑みてなされたものであり、主たる目的はキャビネット前分体の額縁部と、液晶パネルの周縁部後側を保持してある保持体とにより液晶パネルの周縁部を前後で挾持する構成において、額縁部及び保持体の少なくとも一方に、液晶パネルの周縁より外側に配され、額縁部及び保持体間を防塵する防塵筒部を設けることにより、液晶パネル周縁側の防塵性を高めることができる液晶表示装置を提供することにある。   SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a main object thereof is to move the peripheral portion of the liquid crystal panel forward and backward by a frame portion of the front cabinet body and a holding body that holds the rear side of the peripheral portion of the liquid crystal panel. In at least one of the frame portion and the holding body, a dust-proof cylindrical portion that is disposed outside the peripheral edge of the liquid crystal panel and protects the space between the frame portion and the holding body is provided on the liquid crystal panel peripheral side. An object of the present invention is to provide a liquid crystal display device capable of increasing the brightness.

本発明に係る液晶表示装置は、前側に表示面を有する液晶パネルと、該液晶パネルの周縁部及び後側を隠蔽するキャビネットと、該キャビネット内で前記液晶パネルの後側に配され、該液晶パネルの周縁部後側を保持してある保持体とを備える液晶表示装置において、前記キャビネットは、前記液晶パネルの周縁部前側に配され、該液晶パネルの周縁部を前記保持体とにより前後に挾持する額縁部を有し、該額縁部及び保持体の少なくとも一方は、前記液晶パネルの周縁より外側に配され、前記額縁部及び保持体間を防塵する防塵筒部を有することを特徴とする。   The liquid crystal display device according to the present invention includes a liquid crystal panel having a display surface on the front side, a cabinet for concealing a peripheral portion and a rear side of the liquid crystal panel, and a rear side of the liquid crystal panel in the cabinet. In the liquid crystal display device including the holding body holding the rear side of the peripheral edge of the panel, the cabinet is arranged on the front side of the peripheral edge of the liquid crystal panel, and the peripheral edge of the liquid crystal panel is moved back and forth by the holding body. It has a frame part to be held, and at least one of the frame part and the holding body is arranged outside the peripheral edge of the liquid crystal panel, and has a dust-proof cylinder part that prevents dust between the frame part and the holding body. .

この発明にあっては、キャビネット前分体の額縁部と保持体とにより液晶パネルの周縁部を前後で挾持した状態で、液晶パネル周縁側の額縁部及び保持体間を防塵筒部が防塵しているため、液晶パネル周縁側の防塵性を高めることができる。   In the present invention, the dust-proof cylinder portion prevents dust between the frame portion on the peripheral side of the liquid crystal panel and the holding body in a state where the peripheral portion of the liquid crystal panel is held back and forth by the frame portion and the holding body of the cabinet front division. Therefore, the dustproof property of the liquid crystal panel peripheral side can be improved.

また、本発明に係る液晶表示装置は、前記保持体は、前記液晶パネルへ光を照射するランプを収容支持してあるケース体であることが好ましい。
この発明にあっては、ランプとともに光源部を構成するケース体が保持体を兼ねており、該ケース体と額縁部とにより液晶パネルの周縁部を挾持しているため、液晶表示装置の前後の厚さをより一層薄くすることができ、また、部品点数を削減でき、軽量化及びコストの低減を図ることができる。 In the liquid crystal display device according to the present invention, the holding body is preferably a case body that accommodates and supports a lamp that irradiates light to the liquid crystal panel.
In this invention, the case body that constitutes the light source unit together with the lamp also serves as the holding body, and the peripheral part of the liquid crystal panel is held between the case body and the frame portion. The thickness can be further reduced, the number of parts can be reduced, and weight reduction and cost reduction can be achieved.

また、本発明に係る液晶表示装置は、前記防塵筒部は、前記額縁部及び保持体の他方と接触する弾性部材を有することが好ましい。
この発明にあっては、液晶パネル周縁側の額縁部及び保持体間を、防塵筒部に設けられている弾性部材を撓ませて遮断することができるため、額縁部、保持体及び防塵筒部の寸法誤差、変形に影響されることなく液晶パネル周縁側の防塵性を高めることができる。 In the liquid crystal display device according to the present invention, it is preferable that the dust-proof cylinder part has an elastic member that contacts the other of the frame part and the holding body.
In this invention, since the elastic member provided in the dust-proof cylinder part can be bent and blocked between the frame part on the peripheral side of the liquid crystal panel and the holder, the frame part, the holder and the dust-proof cylinder part The dust-proof property on the peripheral side of the liquid crystal panel can be enhanced without being affected by the dimensional error and deformation.

また、本発明に係る液晶表示装置は、前記防塵筒部は、前記額縁部及び保持体に突設され、端部が互いに重なる第１及び第２の筒部分体であることが好ましい。
この発明にあっては、額縁部及び保持体夫々に筒部分体があり、筒部分体の端部同士が重なっているため、額縁部、保持体及び防塵筒部の寸法誤差に影響されることなく液晶パネル周縁側の防塵性を高めることができる。 In the liquid crystal display device according to the present invention, it is preferable that the dust-proof cylindrical portion is a first and second cylindrical partial body that protrudes from the frame portion and the holding body and whose end portions overlap each other.
In this invention, the frame part and the holding body each have a cylindrical part, and the ends of the cylindrical part are overlapped with each other, so that it is affected by dimensional errors of the frame part, the holding body, and the dust-proof cylindrical part. In addition, it is possible to improve the dustproof property on the peripheral side of the liquid crystal panel.

また、本発明に係る液晶表示装置は、前記防塵筒部は、前記額縁部及び保持体の一方に突設され、端面に溝を有する第３の筒部分体と、他方に突設され、その端部が前記溝に挿入される第４の筒部分体であることが好ましい。
この発明にあっては、額縁部及び保持体夫々に筒部分体があり、一方の筒部分体の溝に、他方の筒部分体の端部が挿入されているため、額縁部、保持体及び防塵筒部の寸法誤差に影響されることなく液晶パネル周縁側の防塵性を高めることができる。 Further, in the liquid crystal display device according to the present invention, the dust-proof cylinder portion is provided to protrude from one of the frame portion and the holding body, and has a third cylinder portion having a groove on the end surface, and is provided to the other. It is preferable that an end part is the 4th cylinder partial body inserted in the said groove | channel.
In the present invention, each of the frame portion and the holding body has a cylindrical portion, and since the end of the other cylindrical portion is inserted into the groove of the one cylindrical portion, the frame portion, the holding body, and The dust-proof property on the peripheral side of the liquid crystal panel can be improved without being affected by the dimensional error of the dust-proof cylinder portion.

本発明によれば、キャビネット前分体の額縁部と保持体とにより液晶パネルの周縁部を前後で挾持した状態で、液晶パネル周縁側の額縁部及び保持体間を防塵筒部が防塵しているため、液晶パネル周縁側の防塵性を高めることができる。   According to the present invention, in a state where the peripheral edge of the liquid crystal panel is held back and forth by the frame part and the holding body of the front part of the cabinet, the dust-proof cylinder part prevents dust between the frame part on the peripheral side of the liquid crystal panel and the holding body. Therefore, the dustproof property on the peripheral side of the liquid crystal panel can be improved.

以下本発明をその実施の形態を示す図面に基づいて詳述する。
実施の形態１
図１は本発明に係る液晶表示装置の構成を示す一部を省略した縦断側面図、図２は他の箇所が縦断された断面図、図３は要部の構成を示す拡大断面図である。 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
Embodiment 1
FIG. 1 is a longitudinal side view with a part omitted showing the configuration of a liquid crystal display device according to the present invention, FIG. 2 is a sectional view in which other portions are longitudinally cut, and FIG. 3 is an enlarged sectional view showing the configuration of the main part. .

この液晶表示装置はテレビ画像を表示する表示面１ａを前側に有する液晶パネル１と、該液晶パネル１の後側に配されている光源部２と、該光源部２及び液晶パネル１間に配されている光学シート３と、該光学シート３及び液晶パネル１間に配され、液晶パネル１の周縁部後側を保持する枠状の保持体４と、液晶パネル１の周縁部前側に配される額縁部５１を有し、液晶パネル１の周縁部及び光源部２の後側を隠蔽するキャビネット５と、光源部２の後面に取付けられているスタンドとを備える液晶テレビジョン、換言すれば液晶表示装置である。   The liquid crystal display device includes a liquid crystal panel 1 having a display surface 1a for displaying a television image on the front side, a light source unit 2 disposed on the rear side of the liquid crystal panel 1, and a light source unit 2 and a liquid crystal panel 1 disposed between the light source unit 2 and the liquid crystal panel 1. The optical sheet 3, the optical sheet 3 and the liquid crystal panel 1, the frame-shaped holding body 4 that holds the rear side of the peripheral part of the liquid crystal panel 1, and the front side of the peripheral part of the liquid crystal panel 1. A liquid crystal television having a frame portion 51 that covers the peripheral edge of the liquid crystal panel 1 and the rear side of the light source unit 2, and a stand attached to the rear surface of the light source unit 2, in other words, liquid crystal It is a display device.

液晶パネル１は略直方体をなし、該液晶パネル１の上縁部前面及び下縁部前面に、電子部品が実装されている複数のフレキシブルプリント基板６の一端が接続されている。   The liquid crystal panel 1 has a substantially rectangular parallelepiped shape, and one ends of a plurality of flexible printed boards 6 on which electronic components are mounted are connected to the front surface of the upper edge portion and the front surface of the lower edge portion of the liquid crystal panel 1.

液晶パネル１の後側に配されている保持体４は、液晶パネル１の周縁部後面に対向する矩形の環板部４１と、環板部４１の外縁から後方へ延出されている角筒部４２と、環板部４１の中途から後方へ延出されているシート位置決め凸部４３とを有する。   The holding body 4 arranged on the rear side of the liquid crystal panel 1 includes a rectangular ring plate portion 41 facing the rear surface of the peripheral edge portion of the liquid crystal panel 1 and a rectangular tube extending rearward from the outer edge of the ring plate portion 41. Part 42 and a sheet positioning convex part 43 extending rearward from the middle of the annular plate part 41.

環板部４１の前面には、液晶パネル１の周縁部を弾性的に受止める帯状の弾性体７が貼着されており、角筒部４２の複数の周方向位置に、後方へ延出されている係止爪４４が一体成形されている。係止爪４４は可撓性を有する脚部の先端に爪部が設けられており、該爪部が後記する被係止部に係止されるように構成されている。また、角筒部４２の上壁外面及び下壁外面にはフレキシブルプリント基板６夫々の他端に接続されているプリント回路基板８が取付けられている。   A band-shaped elastic body 7 that elastically receives the peripheral edge of the liquid crystal panel 1 is attached to the front surface of the ring plate portion 41, and is extended rearward at a plurality of circumferential positions of the rectangular tube portion 42. A locking claw 44 is integrally formed. The locking claw 44 is provided with a claw portion at the tip of a flexible leg portion, and the claw portion is configured to be locked to a locked portion described later. A printed circuit board 8 connected to the other end of each flexible printed circuit board 6 is attached to the outer surface of the upper wall and the lower wall of the rectangular tube portion 42.

光源部２は、複数本が上下に離隔して並置されている円筒形をなすランプ２１と、該ランプ２１を収容支持し、且つ光学シート３の周縁部を支持する深皿形をなすケース体２２と、ケース体２２の後壁内面に沿って配され、ケース体２２内に収容されているランプ２１が発光した光をケース体２２の開放側へ反射させる反射シート２３とを備え、ケース体２２の後壁外面に回路基板等の電気部品が取付けられている。   The light source unit 2 includes a cylindrical lamp 21 in which a plurality of light sources are vertically spaced apart from each other, and a case body having a deep dish shape that accommodates and supports the lamp 21 and supports the peripheral edge of the optical sheet 3. 22 and a reflection sheet 23 that is arranged along the inner surface of the rear wall of the case body 22 and reflects the light emitted from the lamp 21 accommodated in the case body 22 to the open side of the case body 22, Electrical components such as a circuit board are attached to the outer surface of the rear wall 22.

ランプ２１は両端部に電極を有する冷陰極管又は熱陰極管であり、ケース体２２内の両側に並設された凹形保持部に両端部が保持され、また、中間部がランプクリップによりケース体２２の後壁に保持されている。   The lamp 21 is a cold-cathode tube or a hot-cathode tube having electrodes at both ends, both ends are held by concave holding portions arranged in parallel on both sides in the case body 22, and an intermediate portion is formed by a lamp clip. It is held on the rear wall of the body 22.

ケース体２２は略直方体をなし、前側の開放縁には光学シート３のシート面に沿って外方へ延出され、光学シート３の周縁部を受止める受止部２２ａと、該受止部２２ａの外縁から後方へ延出され、延出端から前方へ屈曲する二重角筒部２２ｂと、該二重角筒部２２ｂの端縁から前記シート面に沿う方向へ延出され、額縁部５１の外縁側と対向する環板部２２ｃとを有し、該環板部２２ｃの外縁側の複数の周方向位置に、前後方向へ貫通する貫通孔２４が設けられている。また、後壁の外縁側の複数の周方向位置に、螺子孔２５及び係止爪４４に対応する被係止部２６が夫々開設されている。   The case body 22 has a substantially rectangular parallelepiped shape, the front opening edge extends outward along the sheet surface of the optical sheet 3, and a receiving portion 22 a that receives the peripheral edge of the optical sheet 3, and the receiving portion A double rectangular tube portion 22b extending rearward from the outer edge of 22a and bending forward from the extended end; and a frame portion extending from the end edge of the double rectangular tube portion 22b in the direction along the sheet surface. A through-hole 24 penetrating in the front-rear direction is provided at a plurality of circumferential positions on the outer edge side of the ring plate portion 22c. Moreover, the to-be-latched part 26 corresponding to the screw hole 25 and the latching claw 44 is respectively opened at a plurality of circumferential positions on the outer edge side of the rear wall.

キャビネット５は、液晶パネル１の周縁部前側に配され、保持体４の環板部４１を隠蔽する額縁部５１、及び該額縁部５１の外縁から後方へ延出され、保持体４より大形の角筒部５２を有するキャビネット前分体５ａと、ケース体２２の後側を隠蔽する皿状板部５３、及び該皿状板部５３の外縁から前方へ延出され、保持体４より大形の角筒部５４を有するキャビネット後分体５ｂとを備え、角筒部５２，５４同士の嵌合により防塵するように構成されている。   The cabinet 5 is arranged on the front side of the peripheral portion of the liquid crystal panel 1, extends to the rear from the frame portion 51 that conceals the ring plate portion 41 of the holding body 4, and the outer edge of the frame portion 51, and is larger than the holding body 4. The front cabinet body 5a having the rectangular tube portion 52, the dish-like plate portion 53 that conceals the rear side of the case body 22, and the outer edge of the dish-like plate portion 53 extend forward and are larger than the holding body 4. And a rear cabinet 5b having a square tube portion 54, and is configured to be dust-proof by fitting the square tube portions 52 and 54 together.

キャビネット前分体５ａの額縁部５１は液晶パネル１より大形に形成され、内周側で液晶パネル１の前面と対向する箇所には、液晶パネル１の周縁部を弾性的に保持する帯状の弾性体９が貼着されており、額縁部５１の外縁側で、環板部４１と対向する位置には、後方へ延出され、額縁部５１及びケース体２２の周縁部間を閉塞して防塵する防塵筒部１０が一体成形されており、また、額縁部５１及び角筒部５２の境界部の複数の周方向位置に、螺子孔５５を有する筒形ボス５５ａが一体成形されている。   The frame part 51 of the cabinet front body 5a is formed to be larger than the liquid crystal panel 1, and a belt-like shape that elastically holds the peripheral part of the liquid crystal panel 1 at a position facing the front surface of the liquid crystal panel 1 on the inner peripheral side. The elastic body 9 is attached, and is extended rearward at a position facing the ring plate portion 41 on the outer edge side of the frame portion 51, and the space between the frame portion 51 and the peripheral portion of the case body 22 is blocked. A dust-proof cylinder part 10 for dust prevention is integrally formed, and cylindrical bosses 55 a having screw holes 55 are integrally formed at a plurality of circumferential positions at the boundary between the frame part 51 and the square cylinder part 52.

防塵筒部１０は、額縁部５１及び環板部２２ｃ間の距離より短く形成され、該防塵筒部１０の端縁に、環板部２２ｃに接触する帯状の弾性部材が両面テープ等の結合手段により結合されている。   The dust-proof cylinder part 10 is formed shorter than the distance between the frame part 51 and the ring plate part 22c, and a belt-like elastic member that contacts the ring plate part 22c is connected to the edge of the dust-proof cylinder part 10 such as a double-sided tape. Are combined.

キャビネット後分体５ｂの皿状板部５３の外縁部には螺子孔２５に対応する複数の筒形ボス５６が周方向へ離隔して一体成形されており、また、皿状板部５３には複数の放熱孔５７が開設されている。   A plurality of cylindrical bosses 56 corresponding to the screw holes 25 are integrally formed on the outer edge portion of the dish-like plate portion 53 of the cabinet rear part 5 b so as to be spaced apart from each other in the circumferential direction. A plurality of heat radiation holes 57 are opened.

以上のように構成された液晶表示装置は例えば次の(1) 〜(6) の工程で組立てられる。
(1) 作業台上に開放部を上向にして平置きされたケース体２２内に反射シート２３、ランプ２１が組込まれ、光源部２が形成される。この光源部２の上側に光学シート３が載置され、該光学シート３の周縁部が受止部２２ａに支持される。
(2) 光学シート３の上側に保持体４が載置され、該保持体４の係止爪４４がケース体２２の被係止部２６に嵌入係止され、保持体４及びケース体２２が一体となる。この際、受止部２２ａ及び環板部４１の間で光学シート３の周縁部を保持することができ、また、光学シート３のシート面に沿う方向への移動をシート位置決め凸部４３により規制することができ、光学シート３を位置決めすることができる。
(3) 作業台上に額縁部５１が下側となるように平置きされたキャビネット前分体５ａの内側に液晶パネル１が挿入され、額縁部５１に載置される。
(4) 結合された保持体４及びケース体２２は、保持体４が下側となるように反転され、この反転状態で液晶パネル１の上側に載置される。この際、額縁部５１及び環板部４１が液晶パネル１の周縁を挾持し、また、防塵筒部１０の弾性部材１１が環板部２２ｃに密接状に接触し、液晶パネル１周縁側の額縁部５１及び環板部２２ｃ間を閉塞する。
(5) 環板部２２ｃの貫通孔２４に雄螺子１２を挿入し、該雄螺子１２を、螺子孔５５に緊締することにより、キャビネット前分体５ａ及びケース体２２が一体に結合される。
(6) キャビネット後分体５ｂの筒形ボス５６に雄螺子１３を挿入し、該雄螺子１３を螺子孔２５に緊締することにより、キャビネット前分体５ａ、ケース体２２及びキャビネット後分体５ｂが一体に結合される。 The liquid crystal display device configured as described above is assembled by, for example, the following steps (1) to (6).
(1) The reflection sheet 23 and the lamp 21 are assembled in the case body 22 that is placed flat on the work table with the open part facing upward, and the light source unit 2 is formed. The optical sheet 3 is placed on the upper side of the light source part 2, and the peripheral part of the optical sheet 3 is supported by the receiving part 22a.
(2) The holding body 4 is placed on the upper side of the optical sheet 3, the locking claws 44 of the holding body 4 are fitted and locked into the locked portions 26 of the case body 22, and the holding body 4 and the case body 22 are Become one. At this time, the peripheral edge portion of the optical sheet 3 can be held between the receiving portion 22a and the ring plate portion 41, and the movement of the optical sheet 3 in the direction along the sheet surface is restricted by the sheet positioning convex portion 43. The optical sheet 3 can be positioned.
(3) The liquid crystal panel 1 is inserted into the inside of the front cabinet body 5 a that is placed flat so that the frame portion 51 is on the lower side on the work table, and placed on the frame portion 51.
(4) The combined holding body 4 and case body 22 are inverted so that the holding body 4 is on the lower side, and placed on the upper side of the liquid crystal panel 1 in this inverted state. At this time, the frame portion 51 and the ring plate portion 41 hold the periphery of the liquid crystal panel 1, and the elastic member 11 of the dust-proof cylinder portion 10 is in close contact with the ring plate portion 22 c so that the frame on the periphery side of the liquid crystal panel 1 The space between the portion 51 and the ring plate portion 22c is closed.
(5) By inserting the male screw 12 into the through hole 24 of the ring plate portion 22c and tightening the male screw 12 to the screw hole 55, the cabinet front segment 5a and the case body 22 are integrally coupled.
(6) The male screw 13 is inserted into the cylindrical boss 56 of the cabinet rear part 5b, and the male screw 13 is fastened to the screw hole 25, whereby the cabinet front part 5a, the case body 22 and the cabinet rear part 5b. Are joined together.

以上のように額縁部５１と保持体４の環板部４１との間で液晶パネル１の周縁部を挾持した際、防塵筒部１０の弾性部材１１がケース体２２の環板部２２ｃに接触し、液晶パネル１周縁側の額縁部５１及びケース体２２の周縁部間を閉塞して防塵するため、図１の矢印に示すようにキャビネット後分体５ｂに開設されている複数の放熱孔５７からキャビネット内へ侵入した塵埃が、ケース体２２及び角筒部５２，４４間の空間を経て額縁部５１及びケース体２２間の空間へ進行することがあっても、この塵埃が額縁部５１及びケース体２２間の空間から液晶パネル１側へ進行するのを防ぐことができ、液晶パネル１の後面に塵埃が付着するのを防ぐことができる。   As described above, when the peripheral portion of the liquid crystal panel 1 is held between the frame portion 51 and the ring plate portion 41 of the holding body 4, the elastic member 11 of the dust-proof cylinder portion 10 contacts the ring plate portion 22 c of the case body 22. In order to close the frame 51 on the periphery of the liquid crystal panel 1 and the periphery of the case body 22 to prevent dust, a plurality of heat radiation holes 57 are formed in the cabinet rear partition 5b as shown by arrows in FIG. Even if the dust that has entered the cabinet from the inside passes through the space between the case body 22 and the rectangular tube portions 52 and 44 and travels to the space between the frame portion 51 and the case body 22, this dust is Propagation from the space between the case bodies 22 toward the liquid crystal panel 1 can be prevented, and dust can be prevented from adhering to the rear surface of the liquid crystal panel 1.

実施の形態２
図４は本発明に係る液晶表示装置の他の構成を示す一部を省略した縦断側面図、図５は要部の構成を示す拡大断面図である。この液晶表示装置は、実施の形態１における防塵筒部１０を、額縁部５１から後方へ延出されている第１の筒部分体１０ａと、ケース体２２の周縁部から前方へ延出され、第１の筒部分体１０ａの端部と重なる第２の筒部分体１０ｂとを有する構成としたものである。 Embodiment 2
FIG. 4 is a vertical side view with a part omitted showing another configuration of the liquid crystal display device according to the present invention, and FIG. 5 is an enlarged cross-sectional view showing the configuration of the main part. In this liquid crystal display device, the dust-proof cylinder part 10 according to the first embodiment is extended forward from the first cylinder part 10a extending rearward from the frame part 51 and the peripheral part of the case body 22, The second cylinder part body 10b overlaps with the end of the first cylinder part body 10a.

第１の筒部分体１０ａは額縁部５１の中途に一体成形されており、第２の筒部分体１０ｂは二重角筒部２２ｂの端縁から前方へ延出されている。また、第２の筒部分体１０ｂは第１の筒部分体１０ａよりも小形に形成され、額縁部５１及び環板部４１間で液晶パネル１の周縁部を挾持した際、筒部分体１０ａ，１０ｂ同士が重なり、液晶パネル１周縁側の額縁部５１及びケース体２２の周縁部間を閉塞して防塵することができるように構成されている。   The first cylinder part 10a is integrally formed in the middle of the frame part 51, and the second cylinder part 10b extends forward from the edge of the double rectangular cylinder part 22b. The second cylinder part 10b is formed to be smaller than the first cylinder part 10a, and when the peripheral part of the liquid crystal panel 1 is held between the frame part 51 and the ring plate part 41, the cylinder part 10a, 10b overlaps, and it is comprised so that between the frame part 51 of the liquid crystal panel 1 peripheral side and the peripheral part of the case body 22 may be obstruct | occluded, and it can protect.

二重角筒部２２ｂの外側角筒部には筒形ボス５５ａに対応する複数の結合片２７が切起しにより形成され、該結合片２７に、螺子孔５５に対応する貫通孔２８が開設されている。   A plurality of coupling pieces 27 corresponding to the cylindrical boss 55a are formed by cutting and raising in the outer square cylindrical portion of the double rectangular cylindrical portion 22b, and a through hole 28 corresponding to the screw hole 55 is formed in the coupling piece 27. Has been.

この実施の形態にあっては、結合片２７の貫通孔２８に雄螺子１２を挿入し、該雄螺子１２を、螺子孔５５に緊締することにより、キャビネット前分体５ａ及びケース体２２が一体に結合される。この際、額縁部５１の筒部分体１０ａと、ケース体２２の筒部分体１０ｂとが互いに重なり、液晶パネル１周縁側の額縁部５１及びケース体２２の周縁部間を閉塞して防塵することができる。従って、キャビネット後分体５ｂに開設されている複数の放熱孔からキャビネット５内へ侵入した塵埃が液晶パネル１側へ進行するのを防ぐことができ、液晶パネル１の後面に塵埃が付着するのを防ぐことができる。   In this embodiment, by inserting the male screw 12 into the through hole 28 of the coupling piece 27 and tightening the male screw 12 to the screw hole 55, the cabinet front segment 5a and the case body 22 are integrated. Combined with At this time, the cylindrical part 10a of the frame part 51 and the cylindrical part 10b of the case body 22 overlap each other, and the frame part 51 on the peripheral side of the liquid crystal panel 1 and the peripheral part of the case body 22 are closed to prevent dust. Can do. Therefore, it is possible to prevent dust that has entered the cabinet 5 from the plurality of heat radiation holes provided in the rear cabinet 5b from traveling to the liquid crystal panel 1 side, and the dust adheres to the rear surface of the liquid crystal panel 1. Can be prevented.

また、以上のように構成された液晶表示装置は、実施の形態１と同様の工程で組立られる。
その他の構成及び作用は実施の形態１と同様であるため、同様の部品については同じ符号を付し、その詳細な説明及び作用効果の説明を省略する。 The liquid crystal display device configured as described above is assembled in the same process as in the first embodiment.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

実施の形態３
図６は本発明に係る液晶表示装置の他の構成を示す一部を省略した縦断側面図、図７は要部の構成を示す拡大断面図である。この液晶表示装置は、実施の形態１における防塵筒部１０を、額縁部５１から後方へ延出され、端面に環状の溝１０ｃを有する第３の筒部分体１０ｄと、ケース体２２の周縁部から前方へ延出され、端部が溝１０ｃに挿入される第４の筒部分体１０ｅとを有する構成としたものである。 Embodiment 3
FIG. 6 is a vertical sectional side view showing another configuration of the liquid crystal display device according to the present invention, and FIG. 7 is an enlarged cross-sectional view showing the configuration of the main part. In this liquid crystal display device, the dust-proof cylindrical portion 10 according to the first embodiment is extended rearward from the frame portion 51, the third cylindrical partial body 10 d having an annular groove 10 c on the end surface, and the peripheral portion of the case body 22. It is set as the structure which has the 4th cylinder partial body 10e extended from the front to the front, and an edge part being inserted in the groove | channel 10c.

第３の筒部分体１０ｄは額縁部５１の中途に一体成形されており、第４の筒部分体１０ｅは二重角筒部２２ｂの端縁から前方へ延出されている。また、第４の筒部分体１０ｅは第３の筒部分体１０ｄよりも薄肉に形成され、額縁部５１及び環板部４１間で液晶パネル１の周縁部を挾持した際、第４の筒部分体１０ｅが第３の筒部分体１０ｄの溝１０ｃに挿入されるように構成されている。   The third cylinder part 10d is integrally formed in the middle of the frame part 51, and the fourth cylinder part 10e extends forward from the edge of the double rectangular cylinder part 22b. The fourth cylinder part 10e is formed thinner than the third cylinder part 10d. When the peripheral part of the liquid crystal panel 1 is held between the frame part 51 and the ring plate part 41, the fourth cylinder part 10e is formed. The body 10e is configured to be inserted into the groove 10c of the third cylindrical partial body 10d.

二重角筒部２２ｂの外側角筒部には筒形ボス５５ａに対応する複数の結合片２７が切起しにより形成され、該結合片２７に、螺子孔５５に対応する貫通孔２８が開設されている。   A plurality of coupling pieces 27 corresponding to the cylindrical boss 55a are formed by cutting and raising in the outer square cylindrical portion of the double rectangular cylindrical portion 22b, and a through hole 28 corresponding to the screw hole 55 is formed in the coupling piece 27. Has been.

この実施の形態にあっては、結合片２７の貫通孔２８に雄螺子１２を挿入し、該雄螺子１２を、螺子孔５５に緊締することにより、キャビネット前分体５ａ及びケース体２２が一体に結合される。この際、ケース体２２の筒部分体１０ｅが額縁部５１の筒部分体１０ｄの溝１０ｃに挿入されて液晶パネル１周縁側の額縁部５１及びケース体２２の周縁部間を閉塞して防塵しているため、キャビネット後分体５ｂに開設されている複数の放熱孔からキャビネット５内へ侵入した塵埃が液晶パネル１側へ進行するのを防ぐことができ、液晶パネル１の後面に塵埃が付着するのを防ぐことができる。   In this embodiment, by inserting the male screw 12 into the through hole 28 of the coupling piece 27 and tightening the male screw 12 to the screw hole 55, the cabinet front segment 5a and the case body 22 are integrated. Combined with At this time, the cylindrical part 10e of the case body 22 is inserted into the groove 10c of the cylindrical part 10d of the frame part 51 to close the gap between the frame part 51 on the peripheral side of the liquid crystal panel 1 and the peripheral part of the case body 22 to prevent dust. Therefore, it is possible to prevent dust that has entered the cabinet 5 from a plurality of heat radiation holes provided in the cabinet rear partition 5b from proceeding to the liquid crystal panel 1 side, and dust adheres to the rear surface of the liquid crystal panel 1. Can be prevented.

また、以上のように構成された液晶表示装置は、実施の形態１と同様の工程で組立られる。
その他の構成及び作用は実施の形態１と同様であるため、同様の部品については同じ符号を付し、その詳細な説明及び作用効果の説明を省略する。 The liquid crystal display device configured as described above is assembled in the same process as in the first embodiment.
Since other configurations and operations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof and description of operations and effects are omitted.

尚、以上説明した実施の形態では、額縁部５１及び角筒部５２を有するキャビネット前分体５ａを有する構成としたが、その他、角筒部５２がなく、額縁部５１がキャビネット前分体５ａである構成としてもよい。この場合、キャビネット後分体５ｂの角筒部５４は額縁部５１に至るまで延出される。   In addition, in embodiment mentioned above, it was set as the structure which has the cabinet front part 5a which has the frame part 51 and the square cylinder part 52, but there is no square cylinder part 52 and the frame part 51 has the cabinet front part 5a. It is good also as composition which is. In this case, the rectangular tube part 54 of the cabinet rear part 5 b extends to reach the frame part 51.

また、以上説明した実施の形態１では額縁部５１に防塵筒部１０を設けたが、その他、防塵筒部１０はケース体２２の周縁部（例えば環板部２２ｃ）に設ける構成としてもよい。この場合、防塵筒部１０の端面に弾性部材１１が設けられる。   Moreover, in Embodiment 1 demonstrated above, although the dust-proof cylinder part 10 was provided in the frame part 51, the dust-proof cylinder part 10 is good also as a structure provided in the peripheral part (for example, ring-plate part 22c) of the case body 22. In this case, the elastic member 11 is provided on the end surface of the dust-proof cylinder portion 10.

また、以上説明した実施の形態１では保持体４をケース体２２に結合し、額縁部５１に突設された防塵筒部１０をケース体２２に接触させるか、又は筒部分体１０ｂ，１０ｅをケース体２２に設けたが、その他、額縁部５１に突設された防塵筒部１０が接触する被接触部を保持体４の周縁部に設けるか、又は筒部分体１０ａ，１０ｄを保持体４の周縁部に設ける構成としてもよい。   Moreover, in Embodiment 1 demonstrated above, the holding body 4 is couple | bonded with the case body 22, and the dust-proof cylinder part 10 protrudingly provided by the frame part 51 is made to contact the case body 22, or cylinder part 10b, 10e is attached. Although provided in the case body 22, a contacted portion that contacts the dust-proof cylindrical portion 10 projecting from the frame portion 51 is provided at the peripheral portion of the holding body 4, or the cylindrical portion bodies 10 a and 10 d are provided in the holding body 4. It is good also as a structure provided in the peripheral part.

また、以上説明した実施の形態１では、防塵筒部１０を環状とし、筒部分体１０ａ，１０ｂ，１０ｄ，１０ｅを環状としたが、その他、防塵筒部１０、筒部分体１０ａ，１０ｂ，１０ｄ，１０ｅは周方向の一部が欠除された筒形、又は周方向へ離隔して配された筒形の構成としてもよい。   Moreover, in Embodiment 1 demonstrated above, although the dust-proof cylinder part 10 was cyclic | annular and the cylinder part bodies 10a, 10b, 10d, and 10e were cyclic | annular, in addition, the dust-proof cylinder part 10 and cylinder part bodies 10a, 10b, and 10d are used. , 10e may have a cylindrical shape in which a part in the circumferential direction is omitted, or a cylindrical shape that is spaced apart in the circumferential direction.

本発明に係る液晶表示装置の構成を示す一部を省略した縦断側面図である。It is the vertical side view which abbreviate | omitted one part which shows the structure of the liquid crystal display device which concerns on this invention. 本発明に係る液晶表示装置の他の箇所が縦断された断面図である。It is sectional drawing by which the other location of the liquid crystal display device based on this invention was longitudinally cut. 本発明に係る液晶表示装置の要部の構成を示す拡大断面図である。It is an expanded sectional view which shows the structure of the principal part of the liquid crystal display device which concerns on this invention. 本発明に係る液晶表示装置の他の構成を示す一部を省略した縦断側面図である。It is the vertical side view which abbreviate | omitted one part which shows the other structure of the liquid crystal display device based on this invention. 本発明に係る液晶表示装置の要部の構成を示す拡大断面図である。It is an expanded sectional view which shows the structure of the principal part of the liquid crystal display device which concerns on this invention. 本発明に係る液晶表示装置の他の構成を示す一部を省略した縦断側面図である。It is the vertical side view which abbreviate | omitted one part which shows the other structure of the liquid crystal display device based on this invention. 本発明に係る液晶表示装置の要部の構成を示す拡大断面図である。It is an expanded sectional view which shows the structure of the principal part of the liquid crystal display device which concerns on this invention.

符号の説明Explanation of symbols

１ 液晶パネル
１ａ 表示面
２１ ランプ
２２ ケース体
４ 保持体
５ キャビネット
５１ 額縁部
４ 保持体
１０ 防塵筒部
１０ａ 第１の筒部分体
１０ｂ 第２の筒部分体
１０ｃ 溝
１０ｄ 第３の筒部分体
１０ｅ 第４の筒部分体 DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 1a Display surface 21 Lamp 22 Case body 4 Holder 5 Cabinet 51 Frame part 4 Holder 10 Dust-proof cylinder part 10a First cylinder part 10b Second cylinder part 10c Groove 10d Third cylinder part 10e Fourth cylinder part

Claims (5)

前側に表示面を有する液晶パネルと、該液晶パネルの周縁部及び後側を隠蔽するキャビネットと、該キャビネット内で前記液晶パネルの後側に配され、該液晶パネルの周縁部後側を保持してある保持体とを備える液晶表示装置において、前記キャビネットは、前記液晶パネルの周縁部前側に配され、該液晶パネルの周縁部を前記保持体とにより前後に挾持する額縁部を有し、該額縁部及び保持体の少なくとも一方は、前記液晶パネルの周縁より外側に配され、前記額縁部及び保持体間を防塵する防塵筒部を有することを特徴とする液晶表示装置。   A liquid crystal panel having a display surface on the front side, a cabinet for concealing the peripheral edge and the rear side of the liquid crystal panel, and arranged on the rear side of the liquid crystal panel in the cabinet, and holding the rear side of the peripheral edge of the liquid crystal panel The cabinet includes a frame portion that is disposed on the front side of the peripheral portion of the liquid crystal panel, and that holds the peripheral portion of the liquid crystal panel back and forth with the holding body, At least one of a frame part and a holding body is arranged outside the periphery of the liquid crystal panel, and has a dust-proof cylinder part that prevents dust between the frame part and the holding body. 前記保持体は、前記液晶パネルへ光を照射するランプを収容支持してあるケース体である請求項１記載の液晶表示装置。   The liquid crystal display device according to claim 1, wherein the holding body is a case body that houses and supports a lamp that emits light to the liquid crystal panel. 前記防塵筒部は、前記額縁部及び保持体の他方と接触する弾性部材を有する請求項１記載の液晶表示装置。   The liquid crystal display device according to claim 1, wherein the dust-proof cylinder portion includes an elastic member that contacts the other of the frame portion and the holding body. 前記防塵筒部は、前記額縁部及び保持体に突設され、端部が互いに重なる第１及び第２の筒部分体である請求項１記載の液晶表示装置。   2. The liquid crystal display device according to claim 1, wherein the dust-proof cylinder part is a first and second cylinder part that protrudes from the frame part and the holding body and whose end parts overlap each other. 前記防塵筒部は、前記額縁部及び保持体の一方に突設され、端面に溝を有する第３の筒部分体と、他方に突設され、その端部が前記溝に挿入される第４の筒部分体である請求項１記載の液晶表示装置。   The dust-proof cylinder part protrudes from one of the frame part and the holding body, has a third cylinder part having a groove on the end surface, and protrudes from the other, and the end part is inserted into the groove. The liquid crystal display device according to claim 1, wherein the liquid crystal display device is a cylindrical portion.
JP2007317502A 2007-12-07 2007-12-07 Liquid crystal display device Pending JP2009139760A (en)

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JP2007317502A JP2009139760A (en) 2007-12-07 2007-12-07 Liquid crystal display device

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Application Number Title Priority Date Filing Date
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Country Link
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07168177A (en) * 1993-12-15 1995-07-04 Canon Inc Liquid crystal display device
JP2007086649A (en) * 2005-09-26 2007-04-05 Sharp Corp Liquid crystal display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07168177A (en) * 1993-12-15 1995-07-04 Canon Inc Liquid crystal display device
JP2007086649A (en) * 2005-09-26 2007-04-05 Sharp Corp Liquid crystal display device

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