JP3223662B2 - Projection TV shielding structure - Google Patents
Projection TV shielding structureInfo
- Publication number
- JP3223662B2 JP3223662B2 JP24006593A JP24006593A JP3223662B2 JP 3223662 B2 JP3223662 B2 JP 3223662B2 JP 24006593 A JP24006593 A JP 24006593A JP 24006593 A JP24006593 A JP 24006593A JP 3223662 B2 JP3223662 B2 JP 3223662B2
- Authority
- JP
- Japan
- Prior art keywords
- shielding plate
- projection
- shielding
- rib
- bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Transforming Electric Information Into Light Information (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、プロジェクションテ
レビでスクリーン内面がほこり等でよごれないようにシ
ャーシ部とスクリーン部を遮蔽する遮蔽構造に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielding structure for shielding a screen portion from a chassis in a projection television so that the inner surface of the screen is not dusted.
【0002】[0002]
【従来の技術】図5は従来のプロジェクションテレビの
シャーシ部とスクリーン部を遮蔽板により遮蔽している
遮蔽構造を示す断面図である。図において、1はレン
ズ、2はCRT、3はこれらのレンズ1及びCRT2を
取付けて保持するブラケット、4はキャビネットに取付
けられたバックカバー、5は遮蔽板で、鉄板で作られか
つ反射防止のために黒艶消し塗装されている。6は遮蔽
板5を取付けるためにキャビネットに取付けられた取付
金具、7は遮蔽板5を取付けるネジ、8,9はブラケッ
ト3と遮蔽板5及び遮蔽板5とバックカバー部4にそれ
ぞれ貼付けられた緩衝材のクッションである。2. Description of the Related Art FIG. 5 is a sectional view showing a shielding structure in which a chassis and a screen of a conventional projection television are shielded by a shielding plate. In the figure, 1 is a lens, 2 is a CRT, 3 is a bracket for mounting and holding these lenses 1 and 2, 4 is a back cover mounted on a cabinet, 5 is a shielding plate, made of an iron plate and made of anti-reflection. It has a black matte paint for it. Reference numeral 6 denotes a mounting bracket mounted on the cabinet for mounting the shielding plate 5, 7 a screw for mounting the shielding plate 5, and 8 and 9 affixed to the bracket 3, the shielding plate 5, and the shielding plate 5 and the back cover part 4, respectively. It is a cushion of cushioning material.
【0003】次に、キャビネットの所定の位置に取付け
られたブラケット3とバックカバー4の間のスキマを無
くするために設計された遮蔽板5は、前方部をブラケッ
ト3に乗せて後方の取付部を取付金具6にネジ7で取付
ける。この時にそれぞれの部品のバラツキにより、わず
かなスキマが発生するために、ブラケット3と遮蔽板5
との間及び遮蔽板5とバックカバー4との間に、それぞ
れクッショクン8,9等の緩衝材を貼付してスキマを防
いでいる。[0003] Next, a shielding plate 5 designed to eliminate the gap between the bracket 3 and the back cover 4 attached to a predetermined position of the cabinet has a front portion mounted on the bracket 3 and a rear mounting portion. Is attached to the mounting bracket 6 with the screw 7. At this time, a slight gap is generated due to the variation of each part.
And between the shielding plate 5 and the back cover 4, cushioning materials such as cushions 8 and 9 are attached to prevent gaps.
【0004】[0004]
【発明が解決しようとする課題】従来のプロジェクショ
ンテレビの遮蔽構造は以上のように構成されているの
で、スクリーンサイズが異なる機種を開発する際には、
寸法が異なる新しい遮蔽板5を作り直す必要があり、遮
蔽板5の金型費用が多くかかる欠点があった。さらに遮
蔽板5の種類が増えて標準化ができないためにコストも
高くなって不利であった。また、遮蔽板5は鉄板ででき
ているために、寸法のバラツキを吸収してスキマを無く
すことが困難で、そのためにクッション8,9等の緩衝
材を貼付してスキマを無くしていたので部品や作業が増
えコストも高くなる欠点があった。さらに、遮蔽板5は
鉄板でできているために、プロジェクションテレビ内部
の投射光の反射を防ぐためには黒色艶消し塗装をする必
要があり、この塗装により部品のコストが非常に高くな
っていた。Since the shielding structure of the conventional projection television is configured as described above, when developing models having different screen sizes,
It is necessary to recreate a new shielding plate 5 having a different size, and there is a drawback that the mold cost of the shielding plate 5 increases. Further, the number of types of shielding plates 5 is increased and standardization cannot be performed, so that the cost is disadvantageously increased. Also, since the shielding plate 5 is made of an iron plate, it absorbs variations in dimensions and eliminates gaps.
A difficult score and is, because I lost the gap by attaching a buffer material such as cushion 8 and 9 parts and work there is an increased cost is also high disadvantage for it. Further, since the shielding plate 5 is made of an iron plate, it is necessary to apply a black matte coating in order to prevent the reflection of the projection light inside the projection television, and this coating has greatly increased the cost of parts.
【0005】この発明は以上のような問題点を解決する
ためになされたもので、一種類の遮蔽板で何機種にも対
応可能でコストを安くできると共に寸法のバラツキを吸
収してスキマを無くすることができかつ内部反射を防止
できるプロジェクションテレビの遮蔽構造を得ることを
目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. One type of shielding plate can be applied to any number of models and can reduce the cost. It is an object of the present invention to obtain a shielding structure for a projection television that can perform internal reflection and prevent internal reflection.
【0006】[0006]
【課題を解決するための手段】この発明によるプロジェ
クションテレビの遮蔽構造は、遮蔽板の一方リブ部を投
写管ユニットのブラケットに挿着しかつ他方をキャビネ
ットもしくはバックカバーと連結させると共にその間に
形状を可変させる複数個の屈曲部を設けたものである。
前記遮蔽板の他方にコの字型リブを設け、このコの字型
リブにキャビネットのバーを挿入し、かつ前記コの字型
リブの内面に凸部を設けて圧接できるようにしたもので
ある。前記遮蔽板の他方のバックカバー部と嵌合させる
部分に軟質ベローズ部を設けたものである。前記遮蔽板
のスクリーン側表面に細かな凹凸状の形状を設けたもの
である。According to the present invention, there is provided a shielding structure for a projection television in which one rib of a shielding plate is inserted into a bracket of a projection tube unit and the other is connected to a cabinet or a back cover, and a shape is formed therebetween. It is provided with a plurality of bending portions that can be changed.
A U-shaped rib is provided on the other side of the shielding plate, a bar of a cabinet is inserted into the U-shaped rib, and a convex portion is provided on an inner surface of the U-shaped rib so that the rib can be pressed. is there. A soft bellows portion is provided at a portion to be fitted to the other back cover portion of the shielding plate. A fine uneven shape is provided on the screen side surface of the shielding plate.
【0007】[0007]
【作用】この発明においては、遮蔽板のブラケット固定
側とキャビネットのバーの固定部との間に複数箇所の屈
曲部を設けたので、寸法の異なる機種でも奥行,上下方
向の寸法が変えられる。したがって同一の遮蔽板でシャ
ーシ部とスクリーン部が遮蔽でき、各機種ごとに遮蔽板
を製作する必要がない。また、遮蔽板のキャビネット固
定部はコの字型リブで受けているので、キャビネットの
バーを差込み固定するだけでシャーシ部とスクリーン部
が遮蔽でき、かつ凸部により圧接するのでネジ止めがな
くても結合でき作業性の向上になる。In the present invention, since a plurality of bent portions are provided between the bracket fixing side of the shielding plate and the fixing portion of the bar of the cabinet, the dimensions in the depth and vertical directions can be changed even for models having different dimensions. Therefore, the chassis and the screen can be shielded by the same shielding plate, and there is no need to manufacture a shielding plate for each model. Also, since the cabinet fixing part of the shielding plate is received with a U-shaped rib, the chassis part and the screen part can be shielded just by inserting and fixing the bar of the cabinet, and there is no screw fixing because it is pressed against the convex part. Can be combined to improve workability.
【0008】また、遮蔽板のバックカバー固定部に軟質
ベローズ部を設けたので、クッション等の緩衝材を使用
しなくてもバックカバーのリブ部に圧接するので寸法の
バラツキがあってもスキマの遮蔽ができる。また、遮蔽
板は押出成形品なので表面に細かな凹凸を設けて樹脂の
色を黒色にすることで投写光がプレートに当たった時乱
反射するので画面への影響を最少限にすることができ
る。Further, since a soft bellows portion is provided on the back cover fixing portion of the shielding plate, the rib is pressed against the rib portion of the back cover without using a cushioning material such as a cushion. Can shield. Further, since the shielding plate is an extruded product, fine irregularities are provided on the surface to make the color of the resin black, so that the projection light reflects irregularly when it hits the plate, so that the influence on the screen can be minimized.
【0009】[0009]
実施例1.以下、この発明の一実施例を図について説明
する。図1は断面図、図2は図1の遮蔽板を示す斜視
図、図3は他の使用状態を示す断面図であり、図中従来
例と同一部分には同一符号を付して説明を省略する。Embodiment 1 FIG. An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view, FIG. 2 is a perspective view showing the shielding plate of FIG. 1, and FIG. 3 is a cross-sectional view showing another use state. In FIG. Omitted.
【0010】図において、10は樹脂材料からなる遮蔽
板で、キャビネットの取付金具11にネジ12、ネジ穴
12Aにより取付けられる。13は遮蔽板10の一方に
設けられて投写管ユニットのブラケット3に挿着するリ
ブ部で、ブラケット3の板厚より若干小さめに作られて
ブラケット3に圧入してスキマがない状態でネジ14、
ネジ穴14Aによりブラケット3に固定される。15は
遮蔽板10の他方に設けられたコの字型リブで、キャビ
ネットのバー16に嵌合される。このコの字型リブ15
の内側には凸部17が設けられてバー16の板厚がばら
ついてもスキマができないようにしてある。18は遮蔽
板10の中間に形成した複数個の屈曲部で、この部分で
遮蔽板10が折曲して可変できるようにしてある。[0010] In FIG, 10 is a shielding plate made of a resin material, a screw 12 to the mounting bracket 11 of the cabinet, screw holes
12A . Reference numeral 13 denotes a rib portion provided on one side of the shielding plate 10 and inserted into the bracket 3 of the projection tube unit. The rib portion 13 is slightly smaller than the thickness of the bracket 3 and is pressed into the bracket 3 so that there is no gap between the screws 14. ,
It is fixed to the bracket 3 by the screw hole 14A . Reference numeral 15 denotes a U-shaped rib provided on the other side of the shielding plate 10 and is fitted to a bar 16 of the cabinet. This U-shaped rib 15
A convex portion 17 is provided on the inside of the bar so that no gap can be formed even if the thickness of the bar 16 varies. Reference numeral 18 denotes a plurality of bent portions formed in the middle of the shielding plate 10 at which the shielding plate 10 can be bent and changed.
【0011】遮蔽板10のコの字型リブ15をバー16
に挿し込み取付金具11にネジ12により固定して遮蔽
板10を取付けると共に一方のリブ部13をブラケット
3に挿入してネジ14で固定すれば遮蔽板10の装着が
完了する。その際、図1に示すようにバー16とブラケ
ット3との間隔が小さいときにはその屈曲部18で大き
く折曲することにより、また図3に示すようにバー16
とブラケット3との間隔が大きいときには屈曲部18は
さほど折曲しないで、それぞれに対応する。The U-shaped rib 15 of the shielding plate 10 is
The mounting of the shielding plate 10 is completed by mounting the shielding plate 10 by fixing the mounting plate 11 to the mounting bracket 11 with screws 12 and inserting one of the ribs 13 into the bracket 3 and fixing with the screws 14. At this time, when the interval between the bar 16 and the bracket 3 is small as shown in FIG. 1, the bar 16 is largely bent at the bent portion 18 as shown in FIG.
When the distance between the bracket 3 and the bracket 3 is large, the bent portion 18 does not bend so much and corresponds to each.
【0012】上記実施例のように遮蔽板10の他方をコ
の字型リブ15とし、かつこのコの字型リブ15の内側
に凸部17を設けておくと、遮蔽板10の他方をキャビ
ネットのバー16に挿入するだけでよく、しかも凸部1
7により圧接されるのでネジ止めが不要になる。If the other side of the shielding plate 10 is formed into a U-shaped rib 15 and a convex portion 17 is provided inside the U-shaped rib 15 as in the above-described embodiment, the other side of the shielding plate 10 becomes a cabinet. Only needs to be inserted into the bar 16 of the
Since it is pressed by 7, screwing becomes unnecessary.
【0013】実施例2.この実施例は、図4に示すよう
にコの字型リブ15との間に軟質ベローズ部19を設け
たものである。このように軟質ベローズ部19を設けて
おくと、これによりコの字型リブ15がたえず圧接状態
になり、スキマができないようになる。Embodiment 2 FIG. In this embodiment, a soft bellows portion 19 is provided between the U-shaped rib 15 and the U-shaped rib 15 as shown in FIG. When the soft bellows portion 19 is provided in this manner, the U-shaped rib 15 is constantly brought into a press-contact state, so that the gap cannot be formed.
【0014】実施例3.上記各実施例において、遮蔽板
10のスクリーン部側の表面を細かい凹凸状にすること
により、不要な投写光を乱反射させてスクリーンへの投
写光の影響を減らすことができる。Embodiment 3 FIG. In each of the above embodiments, by making the surface of the shielding plate 10 on the screen portion side finely irregular, unnecessary projection light is irregularly reflected, and the influence of the projection light on the screen can be reduced.
【0015】[0015]
【発明の効果】以上のように、この発明によれば形状を
可変させる屈曲部を有するので種々な寸法に対応させら
れる。したがって従来のように機種のレイアウトが変わ
る毎に遮蔽板を設計しなくても同一の部品で対応でき
る。また、キャビネットのバーの嵌合部はコの字型リブ
を圧入して取付けているのでスキマが発生することがな
いし、軟質ベローズ部が圧縮して圧接するようになって
いるのでいずれの場合も従来使用していた部品の寸法バ
ラツキによるスキマ防止用の緩衝材のクッションを廃止
できる。さらに、遮蔽板のスクリーン側表面に細かな凹
凸がつけられるので従来の如く鉄板に黒色艶消し塗装を
していたよりも安価にかつ確実に投写光の反射を防止で
きる。As described above, according to the present invention, since there is a bent portion whose shape is variable, it can be adapted to various dimensions. Therefore, the same components can be used without designing a shielding plate every time the layout of the model changes as in the related art. Also, since the U-shaped rib is press-fitted into the fitting part of the bar of the cabinet, no gap is generated, and the soft bellows part is compressed and pressed, so in any case, It is possible to eliminate the cushion of the cushioning material for preventing the gap due to the dimensional variation of the conventionally used parts. Further, since fine irregularities are formed on the screen side surface of the shielding plate, reflection of the projection light can be reliably and inexpensively prevented at a lower cost than when a black matte coating is applied to the iron plate as in the related art.
【図1】この発明の実施例1を示す断面図である。FIG. 1 is a sectional view showing Embodiment 1 of the present invention.
【図2】図1の遮蔽板を示す斜視図である。FIG. 2 is a perspective view showing the shielding plate of FIG. 1;
【図3】この発明の実施例1の他の使用例を示す断面図
である。FIG. 3 is a sectional view showing another example of use of the first embodiment of the present invention.
【図4】この発明の実施例2を示す断面図である。FIG. 4 is a sectional view showing a second embodiment of the present invention.
【図5】従来の遮蔽板の取付状態を示す断面図である。FIG. 5 is a cross-sectional view showing a mounting state of a conventional shielding plate.
1 レンズ 2 CRT 3 ブラケット 10 遮蔽板 11 取付金具 12 ネジ 13 リブ部 14 ネジ 15 コの字型リブ 16 バー 17 凸部 18 屈曲部 19 軟質ベローズ部 Reference Signs List 1 lens 2 CRT 3 bracket 10 shielding plate 11 mounting bracket 12 screw 13 rib portion 14 screw 15 U-shaped rib 16 bar 17 convex portion 18 bent portion 19 soft bellows portion
Claims (4)
ト部で、シャーシ部とスクリーン部を遮蔽板により遮蔽
する遮蔽構造において、前記遮蔽板の一方リブ部を投写
管ユニット部のブラケットに挿着しかつ他方をキャビネ
ットもしくはバックカバーと連結させると共にその間に
形状を可変させる複数個の屈曲部を設けたことを特徴と
するプロジェクションテレビの遮蔽構造。In a shielding structure in which a chassis and a screen are shielded by a shielding plate in a projection tube unit of a projection television, one rib of the shielding plate is inserted into a bracket of the projection tube unit and the other is inserted. A shielding structure for a projection television, comprising a plurality of bent portions which are connected to a cabinet or a back cover and have a variable shape therebetween.
のコの字型リブにキャビネットのバーを挿入し、かつ前
記コの字型リブの内面に凸部を設けて圧接できるように
したことを特徴とする請求項1のプロジェクションテレ
ビの遮蔽構造。2. A U-shaped rib is provided on the other side of the shielding plate, a bar of a cabinet is inserted into the U-shaped rib, and a convex portion is provided on an inner surface of the U-shaped rib so that the rib can be pressed. 3. The shielding structure for a projection television according to claim 1, wherein:
せる部分に軟質ベローズ部を設けたことを特徴とする請
求項1のプロジェクションテレビの遮蔽構造。3. The shielding structure for a projection television according to claim 1, wherein a soft bellows portion is provided at a portion of the shielding plate to be fitted to the other back cover portion.
の表面で反射しないように、遮蔽板の表面に細かな凹凸
状のスジをつけて投写光を乱反射させるようにしたこと
を特徴とする請求項1〜3のいずれかのプロジェクショ
ンテレビの遮蔽構造。4. The projection plate unit is characterized in that projection light is irregularly reflected by providing fine uneven lines on the surface of the shielding plate so that the projection light from the projection tube unit is not reflected on the surface of the shielding plate. A shielding structure for a projection television according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24006593A JP3223662B2 (en) | 1993-09-27 | 1993-09-27 | Projection TV shielding structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24006593A JP3223662B2 (en) | 1993-09-27 | 1993-09-27 | Projection TV shielding structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0799621A JPH0799621A (en) | 1995-04-11 |
JP3223662B2 true JP3223662B2 (en) | 2001-10-29 |
Family
ID=17053970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24006593A Expired - Fee Related JP3223662B2 (en) | 1993-09-27 | 1993-09-27 | Projection TV shielding structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3223662B2 (en) |
-
1993
- 1993-09-27 JP JP24006593A patent/JP3223662B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0799621A (en) | 1995-04-11 |
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