JPS61230579A - Back plane projection type video projector - Google Patents

Back plane projection type video projector

Info

Publication number
JPS61230579A
JPS61230579A JP7084185A JP7084185A JPS61230579A JP S61230579 A JPS61230579 A JP S61230579A JP 7084185 A JP7084185 A JP 7084185A JP 7084185 A JP7084185 A JP 7084185A JP S61230579 A JPS61230579 A JP S61230579A
Authority
JP
Japan
Prior art keywords
mirror
cabinet
holding frame
mirror holding
operated
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.)
Pending
Application number
JP7084185A
Other languages
Japanese (ja)
Inventor
Osamu Shiyuugisono
祝儀園 修
Yukiaki Iwahara
岩原 幸明
Yoshinori Horikawa
堀川 善憲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7084185A priority Critical patent/JPS61230579A/en
Publication of JPS61230579A publication Critical patent/JPS61230579A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To make a device compact by making the depth narrow when it is not operated by setting a mirror and a mirror holding frame outside of a cabinet in such a way that they can turn to the inside of the device and containing the mirror holding frame inside when the device is not operated. CONSTITUTION:A mirror holding frame 4 which holds a mirror 5 is mounted on a cabinet 3 through a turning shaft 6 and the device is structured that both of the mirror holding frame 4 and the mirror 5 can turn in the inside direction of the cabinet 3. When the back plane projection-typed projector is operated, the mirror holding frame 4 is drawn out to the outside of the cabinet 3 for use. When operating, a picture image is outputted from a cathode-ray tube 1 and it is projected on a transmission-typed screen 7 by a projection lens 2 through the mirror 5 from the back plane. Also, when the device is not operated, like in time of packing carrying, the mirror holding frame 4 is turned in the arrow A direction and is contained within the inside of the cabinet 3. Thereby, the device is made to be compact by decreasing the depth and the packing volume is decreased resulting the increase of the carrying volume at carrying.

Description

【発明の詳細な説明】 〔発明の利用分野」 本発明は、背面投写形ビデオプロジェクタに関し、更に
詳しくは、該プロジェクタをコンパクト化するための構
造に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a rear projection video projector, and more particularly to a structure for making the projector compact.

〔発明の背景〕[Background of the invention]

特開昭57−138479号公報に記載のように、従来
の前面投写形ビデオグロジェクタは、ブラウン管、投写
レンズ、シャシ等を回動することによって、キャビネッ
ト内部へ収納し、コンパクト化を図っている。しかしな
がら背面投写形ビデオプロジェクタの場合は、前面投写
形ビデオグロジェクタの場合とは異な)、直視形テレビ
と同様な形mをして元来コンパクトなものであったため
、従来では大きさに関し何んら配慮する必要がなかった
。しかし、近年、背面投写形ビデオプロジェクタにおい
ても、スクリーンサイズが大きくなるとhう傾向に6)
、それにつれ、装置全体の大きさも大型化されてきたた
め、装置全体を梱包した)、運搬した)する際、コンパ
クト化ができるようにする必要に迫られてきた。
As described in Japanese Unexamined Patent Publication No. 57-138479, a conventional front projection type video projector is designed to be compact by rotating the cathode ray tube, projection lens, chassis, etc. and storing them inside the cabinet. . However, in the case of a rear projection video projector, unlike the case of a front projection video projector), it has the same shape as a direct-view television and was originally compact, so conventionally there were no issues regarding size. There was no need to take any consideration. However, in recent years, even in rear-projection video projectors, there is a tendency to increase the screen size6).
As a result, the size of the entire device has increased, and there has been a need to make the entire device more compact when it is packaged (packed) and transported).

〔発明の目的) 本発明は、上記した様な事情に鑑みなされたものであ)
、従って、本発明の目的は、稼動時には本来の大きさ及
び形態を保ち、非稼動時にはコンパクト化することがで
きる背面投写形ビデオプpジェクタを提供することにあ
る。
[Object of the invention] The present invention was made in view of the above-mentioned circumstances.)
Therefore, an object of the present invention is to provide a rear projection type video projector that can maintain its original size and shape when in operation and can be made compact when not in operation.

〔発明の概要) 本発明は、上記した目的を達成するために、鏡及び鏡を
保持し取ル付けるための枠(以下、鏡保持枠と略記する
。)をキャビネットの外釦出して、キャビネット自体の
奥行きを低減するとともk。
[Summary of the Invention] In order to achieve the above-mentioned object, the present invention provides a mirror and a frame for holding and attaching the mirror (hereinafter abbreviated as mirror holding frame) to the outside of the cabinet by protruding it from the outside button of the cabinet. It also reduces the depth of itself.

前記鏡保持枠は、キャビネットとの接触部を支点とし内
側に回動できるよう設置して、プロジェクタの非稼動時
にはキャビネットの内部に鏡保持枠を収納できるように
したものである。
The mirror holding frame is installed so that it can rotate inward about the contact portion with the cabinet as a fulcrum, so that the mirror holding frame can be stored inside the cabinet when the projector is not in operation.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の一実施例を第1図、第2図により説明す
る。
An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

第1図は、木兄BAI/cおける背面投写形ビデオグロ
ジェクタの稼動時の状態を示す断面図、#r2FIlは
、同じく稼動して−ないとき(梱包時、らるbは運搬時
等)の状態を示す断面図、である。
Figure 1 is a sectional view showing the state of the rear projection video projector in Kinei BAI/c when it is in operation. FIG.

第1図及びfa2図におりて、1はブラウン管、2は投
写レンズ、3はキャビネット、4は鏡保持枠、5は鏡、
6は回動軸、7は透過形スクリーン、である。
In Figure 1 and Figure FA2, 1 is a cathode ray tube, 2 is a projection lens, 3 is a cabinet, 4 is a mirror holding frame, 5 is a mirror,
6 is a rotating shaft, and 7 is a transparent screen.

本実施例では、第1図及び第2図に示す様に、fR5を
保持してhる鏡保持枠4が、キャビネット3に回動軸6
を介して取ル付けられてお〕、その回動軸6を中心に鏡
保持枠4はwM5とともにキャビネット3の内側方向へ
回動できる構造となって^る。
In this embodiment, as shown in FIG. 1 and FIG.
The mirror holding frame 4 is configured to be able to rotate inward of the cabinet 3 together with the wM 5 about the rotation axis 6.

従って、背面投写形グロジェクタを稼動する場合には、
第1図に示す様に%鏡保持枠4をキャビネット5の外側
に引き出して使用する。稼動時には、ブラウン管1から
画像が出力され、投写レンズ2に、より鏡5を介して透
過形スクリーン7上に背面より投写される@鏡保持枠4
をキャビネット3の外側処引き出すことにより、画像進
行経路における投写レンズ2と透過形スクリーン7との
間の距離は規定の大きさになシ、正常な画像をスクリー
ン7上に映し出すことができる。
Therefore, when operating a rear projection type glo projector,
As shown in FIG. 1, the mirror holding frame 4 is pulled out to the outside of the cabinet 5 for use. During operation, an image is output from the cathode ray tube 1 and projected from the rear onto the transmission screen 7 via the projection lens 2 via the mirror 5 @mirror holding frame 4
By pulling out the projection lens 2 to the outside of the cabinet 3, the distance between the projection lens 2 and the transmission screen 7 in the image progression path can be maintained at a specified size, and a normal image can be projected on the screen 7.

また、梱包時や運搬時の様に非稼動状態に″ある場合は
、第2図に示す様に1鏡保持枠4を矢印Aの方向に回動
してキャビネット3の内部へ収納する。これ釦よって、
装置の奥行きが短くなってコンパクト化することができ
る。従って、梱包にあたっては、梱包容量を減らし、運
搬I/cToたっては1回当)の運搬量を増やすことが
できる。
When the mirror is in a non-operating state, such as during packaging or transportation, the mirror holding frame 4 is rotated in the direction of arrow A and stored inside the cabinet 3, as shown in FIG. By the button,
The depth of the device is shortened and it can be made more compact. Therefore, when packaging, it is possible to reduce the packaging capacity and increase the amount of transportation I/cTo (one time).

ところで、一般に、建物の出入口の寸法は、高さ180
0mm、幅800 mmである。その為、スクリーンサ
イズが45インチ程度の背面投写形ビデオグロジェクタ
では、投写レンズ2とスクリーン7との間の距離が短か
い(例えば、1200順程度)ので、装置全体の大きさ
も小さく、本来の大きさく即ち稼動時の大きさ)にて容
易に建物を出入シすることができるが、スクリーンサイ
ズが約55インチ以上VC′%なると、投写レンズとス
クリーンとの間の距離が大きく(例えば、スクリーンサ
イズが58インチで1500mm)なるので、装置全体
の大きさも大きくなシ、そのため、本来の大きさでは建
物の出入口を自由通シ抜けることができない場合もある
。しかしながら、本実施例では、スクリーンサイズが大
きく、例えば、装置の奥行きが稼動時に800 mmあ
る場合でも、非稼動時には800 mm以下にすること
ができるので、建物の出入口を容易に通シ抜けることが
できる。
By the way, in general, the dimensions of the entrance and exit of a building are 180 mm in height.
0mm, width 800mm. Therefore, in a rear projection type video projector with a screen size of about 45 inches, the distance between the projection lens 2 and the screen 7 is short (for example, about 1200 mm), so the overall size of the device is small, and However, if the screen size is approximately 55 inches or more (VC'%), the distance between the projection lens and the screen will be large (e.g., the screen Since the size of the device is 58 inches (1500 mm), the overall size of the device is large, and therefore, the device may not be able to pass freely through the entrance of a building at its original size. However, in this embodiment, the screen size is large; for example, even if the depth of the device is 800 mm when in operation, it can be reduced to 800 mm or less when not in operation, so that it can easily pass through the entrance of a building. can.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、稼動時における装置の奥行きが建物の
出入口の幅よシも広い背面投写形ビデ第1ロジェクタで
あっても、非稼動時忙は英行きを狭くしてコンパクト化
することがてきるので、容易に装置を運搬することがで
きると−う効果がある。また、更に、奥行きを狭くする
ことによって、1回当シの運搬量を増やすことができる
という効果もある。
According to the present invention, even if the device is a rear projection bidet first projector whose depth when in operation is wider than the width of a building entrance/exit, it can be made more compact by narrowing the front end when it is not in operation. This has the advantage that the device can be easily transported. In addition, by narrowing the depth, there is also the effect that the amount of per-go transport can be increased.

【図面の簡単な説明】[Brief explanation of the drawing]

1s1図は、本発明における背面投写形ビデオグロジェ
クタの稼動時の状態を示す断面図、第2図は、同じく非
稼動時の状態を示す断面図、である。 1・・・ブラウン管 2川投写レンズ 3・・・キャプネット 4・・・鏡保持枠 5・・・鏡 6・・・回動軸 7・・・透過形スクリーン
1s1 is a cross-sectional view showing the rear projection type video projector according to the present invention when it is in operation, and FIG. 2 is a cross-sectional view showing the same state when it is not in operation. 1... Braun tube 2 projection lens 3... Cap net 4... Mirror holding frame 5... Mirror 6... Rotating shaft 7... Transmissive screen

Claims (1)

【特許請求の範囲】 1)画像発生源と、該画像発生源の前方に配置された投
写レンズとをキャビネットの内部に有すると共に、鏡と
透過形スクリーンをそれぞれ前記キャビネットに取付け
、前記画像発生源からの画像を投写レンズにより鏡を介
して前記透過形スクリーンに投写するようにした背面投
写形ビデオプロジェクタにおいて、 前記鏡は前記キャビネットへ回動自在に軸支され、前記
プロジェクタの稼動時には、キャビネット外へ回動した
姿勢をとることによって反射鏡としての機能を果たし、
非稼動時には、キャビネット内へ回動して収納されるよ
うにしたことを特徴とする背面投写形ビデオプロジェク
タ。
[Scope of Claims] 1) An image generation source and a projection lens disposed in front of the image generation source are provided inside a cabinet, and a mirror and a transmission screen are respectively attached to the cabinet, and the image generation source In the rear projection video projector, the mirror is rotatably supported on the cabinet, and when the projector is in operation, the mirror is rotatably supported on the cabinet. By taking a rotated posture, it functions as a reflector,
A rear projection video projector characterized in that it can be rotated and stored in a cabinet when not in operation.
JP7084185A 1985-04-05 1985-04-05 Back plane projection type video projector Pending JPS61230579A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7084185A JPS61230579A (en) 1985-04-05 1985-04-05 Back plane projection type video projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7084185A JPS61230579A (en) 1985-04-05 1985-04-05 Back plane projection type video projector

Publications (1)

Publication Number Publication Date
JPS61230579A true JPS61230579A (en) 1986-10-14

Family

ID=13443189

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7084185A Pending JPS61230579A (en) 1985-04-05 1985-04-05 Back plane projection type video projector

Country Status (1)

Country Link
JP (1) JPS61230579A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04180375A (en) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd Projection type television receiver
US5276524A (en) * 1991-06-05 1994-01-04 Konami Kogyo Kabushiki Kaisha Wide display with two CRTs arranged to form a non-overlapping juxtaposed image with one CRT movable from an accommodated position to an operative position

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04180375A (en) * 1990-11-14 1992-06-26 Matsushita Electric Ind Co Ltd Projection type television receiver
US5276524A (en) * 1991-06-05 1994-01-04 Konami Kogyo Kabushiki Kaisha Wide display with two CRTs arranged to form a non-overlapping juxtaposed image with one CRT movable from an accommodated position to an operative position

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