JPS584247A - Projection-type cathode-ray tube - Google Patents
Projection-type cathode-ray tubeInfo
- Publication number
- JPS584247A JPS584247A JP9009581A JP9009581A JPS584247A JP S584247 A JPS584247 A JP S584247A JP 9009581 A JP9009581 A JP 9009581A JP 9009581 A JP9009581 A JP 9009581A JP S584247 A JPS584247 A JP S584247A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- projection
- ray tube
- face
- glass plate
- 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
Links
Classifications
-
- 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
-
- 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
- H01J29/86—Vessels; Containers; Vacuum locks
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はフェース部の外側に前面ガラス板を設けた投
写形陰極線管に闘すh屯のであ為。DETAILED DESCRIPTION OF THE INVENTION The present invention is a development of a projection type cathode ray tube in which a front glass plate is provided on the outside of the face portion.
家庭用0投写形テレビシロンの殆んどは、陰極線管上の
高輝度画像を屈折レンズを用いて映写スクリーン上に拡
大投写や為方式を採用している。Most home-use 0-projection televisions employ a method in which a high-brightness image on a cathode ray tube is enlarged and projected onto a projection screen using a refractive lens.
周知のように、屈折レンズには2種の収差、すなわち、
像面湾曲収差と広義の球面収首とがあり一ζO両者を共
tでIibだけ小冨(することがレンズ設計のボインシ
である。しかし、この両者は一般に叩矛盾するものであ
り、特に屈折率の比較的小ざなプラスチックを使用した
1折しンーズにおいては、像面補正用に断念にレンズを
追加する必要があ口、屈折レンズの性能向上に大暑な障
害となっているばか抄でなく、価格を高−ものにしてい
る・
このような欠点を解決するために、第1g1K示すよう
な投写形陰極線管S提案されている。同図におい?%(
1)は陰極線管であり、内部にフェースM(2)の内面
に塗布冨れ魚螢光11(3)と電子ビームを射出−f為
電子銃(4)とを含んでいる。この陰極線管(1)の特
徴J:+るところは、フェースms (2)の内面、外
面の形状を屈折レンズ系(5)の側c凹とLleと6C
&る・これは、屈折レンズ系(6)による最適ホーカス
点を連ねることによりで龜る面、いわゆ為最適像面が屈
折レンズ系(6)の側TIcl!lとな為という像面湾
曲収差を、画面の1辺では光学系の倍率を高<L、中央
部では光学系の倍率を小5く+為ことにより最適像面を
平坦化し°ようとする−ので64この提案は、確かに、
屈折レンズ系(6)の高性能化と低価格化をもたらすも
のではあるが一一方一投写形陰極着管の信頼性を低下さ
せるという重大欠点があることが判明した@すなわち、
嬉1wiに示されるような投写WI陰極纏管は、フェー
ス−(2)が屈折レンズ系(5)の偏に向かって口とな
っているために、大気圧に弱いということである。As is well known, refractive lenses have two types of aberrations:
There are field curvature aberration and spherical convergence in a broad sense, and the key to lens design is to reduce both ζO by Iib at t.However, these two terms are generally contradictory, and in particular refraction For single-refraction lenses that use plastic with a relatively small index, it is necessary to add a lens for image plane correction, which is not a stupid thing that has become a huge obstacle to improving the performance of refraction lenses. In order to solve these drawbacks, a projection type cathode ray tube S as shown in No. 1g1K has been proposed.
Reference numeral 1) is a cathode ray tube, which includes therein a fluorescent light 11 (3) coated on the inner surface of a face M (2) and an electron gun (4) for emitting an electron beam. The characteristic J:+ of this cathode ray tube (1) is that the shape of the inner and outer surfaces of the face ms (2) is the same as that of the refractive lens system (5), which is concave, Lle, and 6C.
&ru・This is a surface that is blurred by connecting the optimal focus points of the refractive lens system (6), so-called the optimal image surface is on the side of the refractive lens system (6) TIcl! In order to reduce the field curvature aberration, which is caused by l, we try to flatten the optimal image plane by increasing the magnification of the optical system on one side of the screen to a high <L, and at the center, decreasing the magnification of the optical system to 5+. -So64 This proposal is certainly
Although this system improves the performance and lowers the price of the refractive lens system (6), it has been found that it has a serious drawback in that it reduces the reliability of the single projection cathode tube.
The projection WI cathode-wrapped tube as shown in Figure 1wi is vulnerable to atmospheric pressure because the face (2) serves as a mouth toward the polarization of the refractive lens system (5).
第2図は上記の改善策を施した投写形陰極線管(1)を
示す、この陰極線管(υの製造には、まずフェースII
(2) ノ内面に螢光ElF(3)%形成gし、りt
n”e4i1着M(6)ICJ、 b y z −x
u(2)to外*ci*面ガラス(吟が接着される。し
かるのちに、電子銃(4)が封じ込められ一排気装置に
より内部の空気などOガスがスg (2) トの−のガ
スは、フェース部(2)の周辺部につけられた板厚方向
に貫通するガス接電孔(a)を通して111%冨れる・
このようにして作られた投写廖陰緬纏蕾(1)では、従
来フェースII (り [加わって■な大気圧は、ナベ
てII[lガラス板(7)に加わることにな抄、一方、
この前面ガラス板(′F)は平板で&為ので亀大気圧に
よる信慣性低下は全く問題とならない。Figure 2 shows a projection cathode ray tube (1) with the above-mentioned improvement measures.
(2) Formation of fluorescent ElF(3)% on the inner surface of the
n”e4i 1st place M (6) ICJ, b y z -x
The electron gun (4) is then sealed and the exhaust device removes O gas such as the air inside (2). The gas is enriched by 111% through the gas contact hole (a) that penetrates in the thickness direction of the face part (2).
In the projection screen (1) created in this way, the atmospheric pressure that is conventionally applied to the face II ,
Since this front glass plate ('F) is a flat plate, a decrease in reliability due to atmospheric pressure is not a problem at all.
なお、lll5lIIIvc示すように一上記一面ガラ
ス板(γ)にレンズ咋用をもっ曲−1念と見ば前面ガラ
ス(7)の7エース謳側(7&)を平らとして、これと
逆の外側(7b)を国とするような曲面を構成すること
がある。このようにすることによって、lll1ガラス
板(γ)Kレンズ系(5)の作用の少なくとも一部をも
なせろことがで禽、あるーは少なくとも像面湾曲収差レ
ンズと同様の効果をもなせ、これによって7工−ス部(
1)の内外面の[!ie程度を織じ、螢光面(3)のm
成を容易にすることがで禽る。In addition, as shown in lll5lIIIvc, if you put a lens plate on the one-sided glass plate (γ) above, make the 7 ace side (7 &) of the front glass (7) flat, and the opposite side (7 &). 7b) may be constructed as a country. By doing so, it is possible to achieve at least a part of the effect of the glass plate (γ)K lens system (5), or at least the same effect as that of a curvature of field aberration lens. , As a result, the 7th construction department (
1) Internal and external [! m of the fluorescent surface (3)
Birds can be easily formed.
しかし、上記のような構成#/i−投写彫陰極纏管の使
用吹製の特異性を全(無視しtもの11重大な欠点のあ
ることが分つな、それは、一般的vc%投写形陰極纏管
は非常に大食なパフ−密度(II極加連電圧X単位−檀
当りの電流密度)で使用冨れるため、に、螢光面の温度
上昇が見られ、この温度上昇に起因す為螢光体の温度消
光の防止を図るために、歓熱効果をよく中ることは自わ
めて重要である・ところが、II2[、嬉墨aIk示冨
れた構成では、電子銃(4)からの電子ビームが直II
hたるフェース部(8)が高真空領域をは冨んで外気と
擁しているために一員常に昇温することが分った。However, if we ignore all the peculiarities of the use of projection-carved cathode-wrapped tubes as described above, it turns out that there are 11 serious drawbacks, which are the general VC% projection type. Since the cathode-coated tube is used at a very high puff density (II pole applied voltage x unit - current density per tube), an increase in temperature of the fluorescent surface is observed, and this Therefore, in order to prevent temperature quenching of the phosphor, it is extremely important to fully absorb the heating effect. 4) The electron beam from
It has been found that the face part (8), which is the main part, is exposed to outside air in a high vacuum region, so that the temperature of the face part (8) constantly rises.
この発明は上記欠点を解消するためにな冨れたもので、
フェース部とそe1面ガラス板とのIIの空間の圧力を
大気圧よ伽小畜(、管内圧力よ抄大吉(すること(よ抄
、フェース部放熱特性を改善で自るようにしな投写形陰
極線管を提供することを目的としている。This invention has been developed to overcome the above-mentioned drawbacks.
The pressure in the space between the face part and the glass plate on the first side is equal to atmospheric pressure, and the pressure inside the pipe is determined by improving the heat dissipation characteristics of the face part. The purpose is to provide cathode ray tubes.
以下、この発明の一実施例を図1iにもとづいて説明す
る。An embodiment of the present invention will be described below with reference to FIG. 1i.
44図はこの発明にかかる投写形陰極纏蕾の一部切欠側
面図である。このWにお−て、(・)バ一端を関ロLm
ガラス筒で−このガラス筒(@の端面慕は陰極線1j(
1)の7工−ス部(2)に対向する前面ガラス板(?)
となり、かり*g嬬取付は用の側amとなって−る・す
なわち%*aiガラス板(吟は側壁に)の開口偏肩縁に
お−で、接着剤(@を介してフェース部(2)の外側に
%@ec接着冨接着−る。家な、上記ガラス筒(呻と7
エースIII(りとで廖成冨れた空間(ロ)は、本%E
E(1%IE)よ−小菖(、管内圧力(1「6あるーは
I Q rorr)よ鋤大食−圧力状態に保持冨れ、
かつその亀めのv111I@の排気は、上記側l1o4
に設けられた#P%孔■を逓して行なわれてお鯵、11
4図で#f−この#気孔鱒はaに封じ切った被層を示し
て―る。FIG. 44 is a partially cutaway side view of the projection type cathode-bound bud according to the present invention. At this W, move one end of the (・) bar to the Sekiro Lm.
In a glass tube - The end face of this glass tube (@ is the cathode ray 1j (
The front glass plate (?) facing the 7th floor part (2) of 1)
Therefore, to attach the lever, attach it to the opening edge of the glass plate (Gin is on the side wall) on the side of the glass plate (Gin is on the side wall), and apply the adhesive (@) to the face part ( 2) Adhesive glue is attached to the outside of the glass tube.
Ace III
E (1% IE) - small irises (, pressure inside the pipe (1 "6 is I Q rorr) - maintain the pressure state,
And the exhaust of the turtle v111I@ is on the above side l1o4
Horse mackerel, 11
In Figure 4, #f-this #stomata trout shows the sealed layer in a.
上記構成においては、電子銃(4)からの電子ビームが
直接あなる7エースII(2)繻低真空領域□空間(ロ
)をはざんで外気と接す為ため、フェースII(υ0強
度を保持すると同時に、充分&被熱効果を得ることがで
自為、実験によれば一上記空W4(ロ)の圧力は10−
5DtJtorr a[”t’、?!−xgcaa強g
および歓熱につ−で充分な効果のあることが分つな・ま
た−この空間@は、いったん真空ee冨れたのち#e%
空気よ)分子量の小高い気体、セよえば水素1ヘリウム
などで上EfE力に置換冨れ為と一歓熱効Mにお−て、
よ―すぐtL亀411性が得られ為ことも分ったー
ms図に示すようWle、9面ガラス板(ηと側−(至
)とを別体Wc形成−fることがで禽、この真書(γ)
、■関を接着剤(6)で接合+為構成によっても、11
411の場合と同じ効果を得ることがで自る・宜魚%前
面ガラス板(つけフラン)&亀のとしなが、そO断面形
状轄任意IC1!電で1為も0で、たとえば第3図で説
明しなような白面をもなせることがで1/1ムまた、フ
ェース部(2)の螢光面(助を設は亀内面はフラン)I
Ic形成すると七がで自る。In the above configuration, the electron beam from the electron gun (4) directly contacts the outside air across the 7 Ace II (2) low vacuum region □ space (B), so the face II (υ0 intensity is According to experiments, the pressure in the above air W4 (b) is 10-
5DtJtorr a["t',?!-xgcaa strong g
It turns out that there is a sufficient effect in relation to and enthusiasm.Also, once this space is filled with vacuum, #e%
Air) A gas with a slightly high molecular weight, such as hydrogen and helium, is substituted with the EfE force and has a thermal effect M.
As shown in the ms figure, it was possible to form a separate Wc from the 9-sided glass plate (η and side). This true book (γ)
, 11 by joining the gate with adhesive (6) +
The same effect as in the case of 411 can be obtained by using the front glass plate (with a flange) and the tortoise, but with any IC1 in the cross-sectional shape! For example, it is possible to create a white surface as shown in Fig. 3. Also, the fluorescent surface of the face part (2) ) I
When Ic is formed, seven will appear.
以上の説明から解るように、この発明によれ1フ工−ス
部とその外側に接着冨れた前面ガラス板との間の空間の
圧力を大気圧より小高(、管内圧力よロス1くしたので
、電子ビームが直11&*る上eフェースme腋熱特性
を改譬して、画質の向上を■る投写形陰極線管を提供す
ることかで禽る・As can be seen from the above explanation, the present invention allows the pressure in the space between the first floor and the front glass plate glued to the outside to be slightly higher than atmospheric pressure (and to reduce the pressure loss by 1 compared to the pressure inside the pipe). Therefore, we would like to provide a projection cathode ray tube that improves image quality by modifying the heat characteristics of the upper e-face and armpit where the electron beam is directed.
I11図1kvhLIii厘は従来の投写形陰極線管の
一1iisat欠側面図−箇411はこの発明の一実施
例にかか為投写形陰極線管の−lc@欠側tmiii%
IIS■はこの発明の他の実施例kかかる投写彫陰極纏
管の一部切欠側面厘である・
(り・−フェース部、(3)・・・螢光ll1%(7)
−前面ガラス板、(ロ)−am
なお、図中同一符号は同−tたけ相当部分を示す・
代理人 葛舒信−(外1名)
第2図
第4図
手続補正書(自発)6.補
特許庁12官殿 1補ム
・明
(1)
2、発明の名称
と投写形陰極−管
3、補正をする者
正の対象
細書の「特許請求の範囲」および「発明の詳説間」の各
欄。
正の内容
細書:
特許請求の範囲を別紙の通り補正します。
@6頁第20行目客
「10→=。γ500T0..Jとあゐt ro、1〜
”’Torr J訂正しオす。
以 上
別 紙
補正後の特許請求の範囲
r (1) f元画を有するフェース部の少なくと1外
面が凹形状であり、かつ王妃フェース部の外1mK前面
ガラス板が接着された投写形陰極線管におhて、上記フ
ェース部と上記前面ガラス板との間の空間を大電圧より
小さく、管内圧力より太きくしたことを特徴とする投写
形陰極線管。
(21上記空間の圧力t0.1〜”’Torrとした特
許請求の範囲第1項記載の投写形陰極線管。
(3)上記空間に含まれる気体を空気より分子量の小さ
な気体とした特許請求の範@第1項または第2項記載の
投写形陰極線管。
(4)上記空間に含まれる気体をヘリウムあるいけ水素
とした特許請求の範囲第5項記載の投写形陰極線管、」Figure I11 is a cutaway side view of a conventional projection cathode ray tube. Section 411 is an embodiment of the present invention.
IIS■ is a partially cut-out side surface of a projection-engraved cathode tube according to another embodiment of the present invention.
-Front glass plate, (b) -am In addition, the same reference numerals in the drawings indicate parts corresponding to the same number. Agent Ge Shuxin - (1 other person) Figure 2 Figure 4 Procedural amendment (voluntary) 6. Supplementary Patent Office 12 Offices 1 Supplementary Patent Office (1) 2. Title of the invention
and the projection type cathode tube 3, the "Claims" and "Detailed Description of the Invention" columns of the subject specification of the person making the amendment. Correct description of contents: The claims are amended as shown in the attached sheet. @Page 6, line 20 Customer “10→=.γ500T0..J and Atro, 1~
``'Torr J Corrected. Above appendix: Scope of patent claims after amendment (1) At least one outer surface of the face portion having an original image is concave, and 1 mK in front of the outside of the queen face portion 1. A projection cathode ray tube to which a glass plate is bonded, characterized in that a space between the face portion and the front glass plate is smaller than a large voltage and larger than an internal pressure of the tube. (21) A projection type cathode ray tube according to claim 1, in which the pressure in the space is set to t0.1 to ''' Torr. (4) The projection cathode ray tube according to claim 5, wherein the gas contained in the space is helium or hydrogen.
Claims (4)
形状であり、かつ上記7工−ス部の外1gに前面ガラス
板が接着された投写形陰極線管において、上記フェース
部と上記前面ガラス板との間の空間を大気圧より小さく
、管内圧力より大きくし之ことを特徴とする投写形陰極
線管。(1) In a projection cathode ray tube in which at least the outer surface of the 7-piece portion having a fluorescent surface is concave and a front glass plate is adhered to 1g outside the 7-piece portion, the face portion and A projection cathode ray tube characterized in that the space between the front glass plate and the front glass plate is smaller than atmospheric pressure and larger than the pressure inside the tube.
した特許請求の範囲第1項記載の投写形陰極線管。(2) The projection type cathode ray tube according to claim 1, wherein the pressure in the space is 10 to S OOTart .
な気体とした特許請求の範囲第1項または第2項記載の
投写形陰極纏管。(3) The projection type cathode-wrapped tube according to claim 1 or 2, wherein the gas contained in the space has a molecular weight smaller than that of air.
とした特許請求の範@11M5項記載の投写形陰極線管
。(4) The projection cathode ray tube according to claim @11M5, wherein the gas contained in the space is helium or hydrogen.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9009581A JPS584247A (en) | 1981-06-08 | 1981-06-08 | Projection-type cathode-ray tube |
DE19823221626 DE3221626A1 (en) | 1981-06-08 | 1982-06-08 | Projection cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9009581A JPS584247A (en) | 1981-06-08 | 1981-06-08 | Projection-type cathode-ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS584247A true JPS584247A (en) | 1983-01-11 |
Family
ID=13988955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9009581A Pending JPS584247A (en) | 1981-06-08 | 1981-06-08 | Projection-type cathode-ray tube |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS584247A (en) |
DE (1) | DE3221626A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1047869C (en) * | 1994-09-16 | 1999-12-29 | 株式会社金星社 | Braun tube for a projection television receiver |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19840590A1 (en) * | 1998-09-05 | 2000-03-09 | Brigitte Kobilarov | Concave display screen front panel for PCs and TVs forms section of a sphere with center point front of the screen at normal distance for using display for normal size of front panel |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2172775A (en) * | 1935-01-30 | 1939-09-12 | Telefunken Gmbh | Optical system |
US2569654A (en) * | 1948-11-19 | 1951-10-02 | John M Cage | Cathode-ray tube |
DE1804396U (en) * | 1957-01-26 | 1960-01-21 | Telefunken Gmbh | VACUUM VESSELS, IN PARTICULAR VACUUM VESSELS FOR CATHODE BEAM TUBES. |
CA1117176A (en) * | 1977-10-19 | 1982-01-26 | Eiichi Miyazaki | Cathode ray tube with a concave surface |
AU522177B2 (en) * | 1978-02-06 | 1982-05-20 | Esplin Kloss Henry | Projection tv tube |
JPS597731Y2 (en) * | 1979-06-07 | 1984-03-09 | ソニー株式会社 | cathode ray tube equipment |
-
1981
- 1981-06-08 JP JP9009581A patent/JPS584247A/en active Pending
-
1982
- 1982-06-08 DE DE19823221626 patent/DE3221626A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1047869C (en) * | 1994-09-16 | 1999-12-29 | 株式会社金星社 | Braun tube for a projection television receiver |
Also Published As
Publication number | Publication date |
---|---|
DE3221626C2 (en) | 1988-09-08 |
DE3221626A1 (en) | 1983-02-03 |
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