JPS6364115B2 - - Google Patents
Info
- Publication number
- JPS6364115B2 JPS6364115B2 JP58191692A JP19169283A JPS6364115B2 JP S6364115 B2 JPS6364115 B2 JP S6364115B2 JP 58191692 A JP58191692 A JP 58191692A JP 19169283 A JP19169283 A JP 19169283A JP S6364115 B2 JPS6364115 B2 JP S6364115B2
- Authority
- JP
- Japan
- Prior art keywords
- cathode ray
- ray tube
- lens
- transparent
- transparent liquid
- 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
Links
- 239000007788 liquid Substances 0.000 claims description 31
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 239000012780 transparent material Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/006—Arrangements for eliminating unwanted temperature effects
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、受像管の管面にレンズ群を配置して
画像の拡大投写を行なう投写形受像機に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a projection type receiver in which a lens group is arranged on the tube surface of a picture tube to enlarge and project an image.
かかる投写形受像機において、投写画面におけ
るコントラストを向上させる目的等で、受像管を
構成するブラウン管とレンズ間に樹脂又は液体等
の透明体を充填する技術が知られているが、その
従来技術としては、第１図に示すように、ブラウ
ン管１とレンズ群２のうちの第１レンズ３に透明
樹脂４を接着又は粘着するか、第２図に示すよう
にブラウン管１と第１レンズ３間にパツキング６
を用いて透明液体５を封入していた。
In such projection type receivers, a technique is known in which a transparent material such as resin or liquid is filled between the cathode ray tube and the lens constituting the picture tube for the purpose of improving the contrast on the projection screen. As shown in FIG. 1, a transparent resin 4 is glued or adhered to the cathode ray tube 1 and the first lens 3 of the lens group 2, or as shown in FIG. Packing 6
The transparent liquid 5 was sealed using the .
そこでブラウン管１とレンズ群２をシヤシ９に
取り取けるとブラウン管１と第１レンズ３間の透
明材４，５に大きな圧力が加わることがある。 Therefore, when the cathode ray tube 1 and the lens group 2 are attached to the chassis 9, a large pressure may be applied to the transparent materials 4 and 5 between the cathode ray tube 1 and the first lens 3.
一方通常投写用ブラウン管１の表面は100℃近
く温度が変化する為、ブラウン管１及びブラウン
管１に近接した透明材４，５等は、大きく伸縮し
てブラウン管１と第１レンズ３間で圧力の変化を
繰り返えす。この為、ブラウン管１やレンズ群２
が破損したり、パツキング６が破損して透明液体
５が流れ出るという欠点があつた。 On the other hand, since the temperature of the surface of the normal projection cathode ray tube 1 changes by nearly 100 degrees Celsius, the cathode ray tube 1 and the transparent materials 4, 5, etc. close to the cathode ray tube 1 expand and contract significantly, causing pressure changes between the cathode ray tube 1 and the first lens 3. Repeat. For this reason, the cathode ray tube 1 and lens group 2
There were disadvantages in that the packing 6 was damaged and the transparent liquid 5 flowed out.
本発明の目的は、前述した従来技術の欠点をな
くし、ブラウン管とレンズをシヤシに取り付けた
時又は温度変化等によつて発生するブラウン管と
レンズとの間の圧力の変化でブラウン管やレンズ
又はパツキング部等が破損しないようにした安全
な投写形受像機を提供することにある。
An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art, and to prevent pressure changes between the cathode ray tube and the lens, which occur when the cathode ray tube and the lens are attached to the chassis or due to temperature changes, etc. It is an object of the present invention to provide a safe projection type receiver which is prevented from being damaged.
上記目的を達成するため、本発明においては、
受像管の管面とその前方に配置したレンズとの間
の空間に透明な液体を充填することにより該空間
から空気層を除去して成る投写形受像機におい
て、前記空間を構成する容器として伸縮自在な弾
性部分を含む容器を用い、容器内透明液体の体積
変化を前記弾性部分の伸縮により吸収するように
すると共に、該弾性部分が受像管で発生する熱を
放出して前述の体積変化を減少せしめるようにし
たことを特徴としている。
In order to achieve the above object, in the present invention,
In a projection type receiver in which a space between a tube surface of a picture tube and a lens placed in front of the picture tube is filled with a transparent liquid to remove an air layer from the space, an expandable container is used as a container constituting the space. A container including a flexible elastic part is used to absorb changes in the volume of the transparent liquid in the container by expanding and contracting the elastic part, and the elastic part releases heat generated in the picture tube to absorb the volume change. It is characterized in that it is made to decrease.
次に図を参照して本発明の一実施例を説明す
る。第３図は本発明の一実施例の要部を示す断面
図である。同図を参照する。ブラウン管１とレン
ズ群２のうちの第１レンズ３間に透明液体５を入
れた透明樹脂袋７をブラウン管１と第１レンズ３
にその各面を接着又は粘着して取りつける。
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a sectional view showing essential parts of an embodiment of the present invention. Refer to the same figure. A transparent resin bag 7 containing a transparent liquid 5 is placed between the cathode ray tube 1 and the first lens 3 of the lens group 2.
Attach each side with adhesive or glue.
一方前記透明樹脂袋７の側面には前記透明液体
５が流入、流出可能なように弾性袋８を設ける。
仮にブラウン管１とレンズ群２をシヤシ９に取り
付けた時、ブラウン管１と第１レンズ３との間の
間隔が狭くなり透明材７，５に圧力が加わつたと
すると、透明液体５の一部は弾性袋８に流れ込み
弾性袋８はわずかにふくらんで安定する。 On the other hand, an elastic bag 8 is provided on the side surface of the transparent resin bag 7 so that the transparent liquid 5 can flow in and out.
Suppose that when the cathode ray tube 1 and lens group 2 are attached to the chassis 9, the distance between the cathode ray tube 1 and the first lens 3 becomes narrower and pressure is applied to the transparent materials 7 and 5. It flows into the elastic bag 8, and the elastic bag 8 is slightly inflated and stabilized.
仮にブラウン管１と第１レンズ３間の距離を
0.3cmとし、透明樹脂袋７の厚さは２枚で0.2cm、
又透明液体５の厚さは0.1cmとする。又、第１レ
ンズ３は半径６cmの円とすると、第１レンズ３に
面する透明液体５の体積は２×62×0.1≒11.3cm3と
なる。 If the distance between the cathode ray tube 1 and the first lens 3 is
0.3cm, and the thickness of the two transparent resin bags 7 is 0.2cm.
Also, the thickness of the transparent liquid 5 is 0.1 cm. Further, assuming that the first lens 3 is a circle with a radius of 6 cm, the volume of the transparent liquid 5 facing the first lens 3 is 2×6 2 ×0.1≈11.3 cm 3 .
今ブラウン管１とレンズ群２と取り付け、さら
に温度変化があつてブラウン管１と第１レンズ３
間が圧縮されて0.27cmとなつたとすると透明液体
５の厚さは0.07cmとなり、余剰液体ΔTは、ΔT＝
２×62×0.03≒3.39cm3となる。従つて弾性袋８は
約４cm3の液体が飲み込めれば十分である。 Now, we have installed cathode ray tube 1 and lens group 2, and due to temperature changes, we have installed cathode ray tube 1 and lens group 3.
If the gap is compressed to 0.27cm, the thickness of the transparent liquid 5 will be 0.07cm, and the excess liquid ΔT will be ΔT=
2×6 2 ×0.03≒3.39cm 3 . Therefore, it is sufficient for the elastic bag 8 to be able to swallow approximately 4 cm 3 of liquid.
第５図に弾性袋８の一例（拡大断面図）を示
す。弾性袋８は予じめａに示す如き形状にして透
明液体５を封じ込む。そこで液体５が矢印２０の
方向に流れると弾性袋８はｂに示す形状に変形す
る。そこで斜線部の面積を0.2cm3とする（約ｌ＝
１cm、ｄ＝0.28cm）と、弾性袋８は第６図（正面
図）で示すように第１レンズ３の外周を囲むよう
に20cmあれば４cm3の透明液体５を飲みこむことが
出来る。 FIG. 5 shows an example (enlarged sectional view) of the elastic bag 8. The elastic bag 8 is shaped in advance as shown in a to seal the transparent liquid 5 therein. When the liquid 5 flows in the direction of the arrow 20, the elastic bag 8 deforms into the shape shown in b. Therefore, the area of the shaded area is set to 0.2 cm 3 (approximately l =
1 cm, d=0.28 cm), and if the elastic bag 8 is 20 cm long so as to surround the outer periphery of the first lens 3 as shown in FIG. 6 (front view), it can swallow 4 cm 3 of transparent liquid 5.
透明液体５及び透明樹脂袋７はブラウン管１に
使用しているガラス、及び第１レンズ３に使用し
ているガラス又はプラスチツク等の屈折率に近い
ほど効果が上がる。 The closer the refractive index of the transparent liquid 5 and the transparent resin bag 7 is to that of the glass used for the cathode ray tube 1 and the glass or plastic used for the first lens 3, the better the effect will be.
一般にレンズは屈折率ｎ＝1.5付近であるが、
実用面から一例を示すと、(イ)透明液体５にエチル
グリコール液（ｎ≒1.42）、(ロ)弾性袋をそなえた
透明樹脂袋にアクリルシート（ｎ≒1.5）、(ハ)透明
接着剤にアクリル系接着剤（ｎ≒1.5）、を使用す
るとコントラスト比で２倍近くの改良が確認出来
る。 Generally, lenses have a refractive index of around n=1.5,
To give an example from a practical standpoint, (a) ethyl glycol liquid (n≒1.42) as the transparent liquid 5, (b) acrylic sheet (n≒1.5) in a transparent resin bag equipped with an elastic bag, and (c) transparent adhesive. When acrylic adhesive (n≒1.5) is used, an improvement of nearly twice the contrast ratio can be confirmed.
第４図は本発明の他の実施例の要部を示す断面
図である。同図に示す実施例は、ブラウン管１と
第１レンズ３の面に接する透明樹脂袋７の中央部
分をブラウン管１と第１レンズ３の面で兼用した
ものである。 FIG. 4 is a sectional view showing the main parts of another embodiment of the present invention. In the embodiment shown in the figure, the central portion of the transparent resin bag 7 which is in contact with the surfaces of the cathode ray tube 1 and the first lens 3 is also used as the surface of the cathode ray tube 1 and the first lens 3.
本発明の他の実施例について第７図（断面図）
を使つて説明する。 Another embodiment of the present invention FIG. 7 (cross-sectional view)
Explain using.
ブラウン管１の表面及び第１レンズ３の表面に
透明樹脂袋７を透明接着剤又は粘着剤ではりつけ
る。前記透明樹脂袋７にはブラウン管１及び第１
レンズ３の表面からはずれた空気、又はシヤシ９
に接する部分に弾性袋８を設ける。 A transparent resin bag 7 is attached to the surface of the cathode ray tube 1 and the surface of the first lens 3 using a transparent adhesive or adhesive. The transparent resin bag 7 contains a cathode ray tube 1 and a first tube.
Air removed from the surface of the lens 3 or shell 9
An elastic bag 8 is provided in the portion that comes into contact with.
今、ブラウン管１に通電して投写光を発射する
とブラウン管１の表面は発熱し、透明液体５に伝
わり、透明液体５は膨張する。しかし、膨張して
発生する余剰液体は矢印２１の方向に弾性袋８に
入り安定する。 Now, when the cathode ray tube 1 is energized and projected light is emitted, the surface of the cathode ray tube 1 generates heat, which is transmitted to the transparent liquid 5, and the transparent liquid 5 expands. However, the surplus liquid generated by the expansion enters the elastic bag 8 in the direction of arrow 21 and stabilizes.
一方ブラウン管１の表面で発生した熱は透明液
体５に伝達し、透明液体５は対流をおこし弾性袋
８の空気又はシヤシ９に接する部分から放熱さ
れ、弾性袋８は放熱袋１０としても働く。そこで
ブラウン管１で発生する熱が放熱されることにな
り、透明液体５の膨張も減少する、又ブラウン管
１の温度を下げることが出来る為、その分ブラウ
ン管１の輝度を上げる事が出来、２重の効果が得
られる。 On the other hand, the heat generated on the surface of the cathode ray tube 1 is transferred to the transparent liquid 5, which causes convection and is radiated from the portion of the elastic bag 8 that contacts the air or the shell 9, and the elastic bag 8 also functions as a heat radiation bag 10. Therefore, the heat generated in the cathode ray tube 1 is dissipated, the expansion of the transparent liquid 5 is also reduced, and the temperature of the cathode ray tube 1 can be lowered, so the brightness of the cathode ray tube 1 can be increased accordingly, and the The effect of this can be obtained.
本発明のさらに他の実施例を第８図（断面図）
を使つて説明する。 FIG. 8 (cross-sectional view) shows still another embodiment of the present invention.
Explain using.
ブラウン管１の表面と第１レンズ３の表面との
間隔が比較的広い場合は、弾性袋８はブラウン管
１と第１レンズ間に設置する。温度変化による透
明液体５の膨張、収縮等の体積変化は弾性袋８が
伸び縮みして吸収され、ブラウン管１と第１レン
ズ３間の圧力変化は軽減される。 When the distance between the surface of the cathode ray tube 1 and the surface of the first lens 3 is relatively wide, the elastic bag 8 is installed between the cathode ray tube 1 and the first lens. Volume changes such as expansion and contraction of the transparent liquid 5 due to temperature changes are absorbed by the elastic bag 8 which expands and contracts, and pressure changes between the cathode ray tube 1 and the first lens 3 are reduced.
以上述べたとおり本発明によれば、ブラウン管
とレンズ間に透明材を充填した場合、ブラウン
管・レンズ間に発生する圧力変化に応じて、透明
樹脂袋内の透明液体が弾性袋に出入りする為、ブ
ラウン管とレンズ間には破壊的な圧力が全く加わ
らなくなり、安全に透明材を保持出来るという利
点がある。これにより、ブラウン管の爆破や液体
の流出による火災の危険等がなくなり、コントラ
ストの高い高性能な投写形受像機が実用出来る。
As described above, according to the present invention, when a transparent material is filled between the cathode ray tube and the lens, the transparent liquid in the transparent resin bag moves in and out of the elastic bag in response to pressure changes occurring between the cathode ray tube and the lens. This has the advantage that no destructive pressure is applied between the cathode ray tube and the lens, and the transparent material can be held safely. This eliminates the risk of fire caused by explosion of the cathode ray tube or spillage of liquid, and a high-performance projection receiver with high contrast can be put into practical use.
さらにブラウン管１の表面に発生する熱は透明
液体５に伝導し、透明液体５は対流して弾性袋８
（放熱袋）の外部表面から放熱する為、ブラウン
管１の冷却効果を得ることが出来る。そこで前述
弾性袋８（放熱袋）の外部表面を広くして空気又
は他の熱伝導体により多く接するようにすること
によりブラウン管１の冷却効果を高めることが出
来る。 Further, the heat generated on the surface of the cathode ray tube 1 is conducted to the transparent liquid 5, and the transparent liquid 5 is convected to form an elastic bag 8.
Since heat is radiated from the external surface of the (heat radiating bag), the effect of cooling the cathode ray tube 1 can be obtained. Therefore, the cooling effect of the cathode ray tube 1 can be enhanced by widening the external surface of the elastic bag 8 (heat dissipation bag) so that it comes into contact with air or other heat conductors more.
以上のように本発明によると、温度変化を少な
くして、圧力変化を軽減させることが出来、一方
ブラウン管１を冷却することにより輝度を上げる
ことが出来、実用効果大である。 As described above, according to the present invention, temperature changes can be reduced and pressure changes can be reduced, and on the other hand, brightness can be increased by cooling the cathode ray tube 1, which has great practical effects.
第１図、第２図はそれぞれ従来の投写形受像機
の要部を示す断面図、第３図乃至第５図はそれぞ
れ本発明の実施例の要部を示す断面図、第６図は
第５図に示す実施例の正面図、第７図、第８図は
それぞれ本発明の他の実施例の要部を示す断面
図、である。
符号説明、１……ブラウン管、２……レンズ
群、３……第１レンズ、４……透明樹脂、５……
透明液体、６……パツキング、７……透明樹脂
袋、８……弾性袋、９……シヤシ、１０……放熱
袋。
FIGS. 1 and 2 are sectional views showing the main parts of a conventional projection receiver, FIGS. 3 to 5 are sectional views showing the main parts of an embodiment of the present invention, and FIG. FIG. 5 is a front view of the embodiment shown in FIG. 5, and FIGS. 7 and 8 are sectional views showing essential parts of other embodiments of the present invention. Description of symbols, 1... Braun tube, 2... Lens group, 3... First lens, 4... Transparent resin, 5...
Transparent liquid, 6... Packing, 7... Transparent resin bag, 8... Elastic bag, 9... Shade, 10... Heat dissipation bag.
Claims (1)
の間の空間に透明な液体を充填することにより該
空間から空気層を除去して成る投写形受像機にお
いて、 前記空間を構成する容器の一部を、該容器内に
透明な液体を充填したとき、その体積変化を伸縮
により吸収する如き弾性部材によつて形成したこ
とを特徴とする投写形受像機。[Scope of Claims] 1. A projection type receiver in which a space between a tube surface of a picture tube and a lens disposed in front of the picture tube is filled with a transparent liquid to remove an air layer from the space, comprising: A projection type image receiver characterized in that a part of a container constituting the space is formed of an elastic member that expands and contracts to absorb changes in volume when the container is filled with a transparent liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19169283A JPS6084080A (en) | 1983-10-15 | 1983-10-15 | Projective type receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19169283A JPS6084080A (en) | 1983-10-15 | 1983-10-15 | Projective type receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6084080A JPS6084080A (en) | 1985-05-13 |
| JPS6364115B2 true JPS6364115B2 (en) | 1988-12-09 |
Family
ID=16278871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19169283A Granted JPS6084080A (en) | 1983-10-15 | 1983-10-15 | Projective type receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6084080A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6212038A (en) * | 1985-07-09 | 1987-01-21 | Matsushita Electric Ind Co Ltd | Projection picture tube device |
| JPH0241979Y2 (en) * | 1985-08-06 | 1990-11-08 | ||
| JPS6237153U (en) * | 1985-08-26 | 1987-03-05 | ||
| JPH0448624Y2 (en) * | 1985-12-26 | 1992-11-16 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109320A (en) * | 1978-02-15 | 1979-08-27 | Matsushita Electronics Corp | Projection image receiver |
| JPS5628571A (en) * | 1979-08-16 | 1981-03-20 | Matsushita Electric Ind Co Ltd | Television projecting unit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS597731Y2 (en) * | 1979-06-07 | 1984-03-09 | ソニー株式会社 | cathode ray tube equipment |
| JPS6322605Y2 (en) * | 1980-04-22 | 1988-06-21 | ||
| JPS57170262U (en) * | 1981-04-22 | 1982-10-26 |
-
1983
- 1983-10-15 JP JP19169283A patent/JPS6084080A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54109320A (en) * | 1978-02-15 | 1979-08-27 | Matsushita Electronics Corp | Projection image receiver |
| JPS5628571A (en) * | 1979-08-16 | 1981-03-20 | Matsushita Electric Ind Co Ltd | Television projecting unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6084080A (en) | 1985-05-13 |
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