JPS597727Y2 - Projection picture tube - Google Patents
Projection picture tubeInfo
- Publication number
- JPS597727Y2 JPS597727Y2 JP9789877U JP9789877U JPS597727Y2 JP S597727 Y2 JPS597727 Y2 JP S597727Y2 JP 9789877 U JP9789877 U JP 9789877U JP 9789877 U JP9789877 U JP 9789877U JP S597727 Y2 JPS597727 Y2 JP S597727Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal cylindrical
- concave mirror
- target electrode
- cylindrical body
- picture tube
- 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
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
【考案の詳細な説明】
本考案は、投射形式のテレビジョン受像装置に用いられ
る投射型受像管に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a projection type picture tube used in a projection type television receiver.
一般に、投射型受像管は、電子銃とターゲット電極との
間に凹面鏡を備え、電子銃から放射されかつ偏向作用を
受けた変調電子ビームは、凹面鏡の中央孔を通ってター
ゲット電極にいたり、このターゲット電極の蛍光面を走
査する。Generally, a projection picture tube is equipped with a concave mirror between an electron gun and a target electrode, and the modulated electron beam emitted from the electron gun and deflected passes through the center hole of the concave mirror and reaches the target electrode. Scan the fluorescent screen of the target electrode.
そして、この走査によって蛍光面に得られた映像は、前
記凹面鏡で反射したのち、フェースプレート部を透過し
、管外のスクリーンに拡大画像を結ぶ。The image obtained on the phosphor screen by this scanning is reflected by the concave mirror and then transmitted through the face plate section, forming an enlarged image on a screen outside the tube.
このような投射型受像管においては、ターゲット電極の
光軸と凹面鏡の光軸とがずれていたり、あるいは両者の
相互間隔が適当でないと、良好な画像を得ることができ
ないので、管製造時には、両者の位置の精度がとくに重
要となる。In such a projection picture tube, if the optical axis of the target electrode and the concave mirror are misaligned, or if the distance between them is not appropriate, it is not possible to obtain a good image, so when manufacturing the tube, The accuracy of both positions is particularly important.
本考案は、この位置の精度を高くする構造を得ることを
目的とするもので、以下図面に示した実施例とともに説
明する。The present invention aims to obtain a structure that increases the accuracy of this position, and will be explained below along with embodiments shown in the drawings.
第１図および第２図において、ガラスからなる真空外囲
器１は、そのネック部２に電子銃３を、そして、ファン
ネル部４に凹面鏡５、ターゲット電極６、第１の金属円
筒体７、第２の金属円筒体８および連結部９等からなる
電極構体１０をそれぞれ封入している。1 and 2, a vacuum envelope 1 made of glass has an electron gun 3 in its neck part 2, a concave mirror 5 in a funnel part 4, a target electrode 6, a first metal cylinder 7, An electrode assembly 10 consisting of a second metal cylindrical body 8, a connecting portion 9, etc. is each enclosed.
凹面鏡５は、中央孔１１を有するガラス基体１２と、そ
の凹内面に反射面を形威すべく被着されたアルミニウム
等の金属膜１３とからなる。The concave mirror 5 consists of a glass substrate 12 having a central hole 11 and a metal film 13 made of aluminum or the like deposited on the concave inner surface of the glass substrate 12 to form a reflective surface.
また、アルミニウムまたはステンレス鋼等からなるター
ゲット電極６は、その凸状面上に蛍光面１４を有し、１
５は透光性のフェースプレート部、１６は集束コイル、
２６は偏向コイルを示す。Further, the target electrode 6 made of aluminum, stainless steel, etc. has a fluorescent screen 14 on its convex surface.
5 is a translucent face plate part, 16 is a focusing coil,
26 indicates a deflection coil.
第１の金属円筒体７は凹面鏡５とほぼ同一の外径を有し
、その一端縁において凹面鏡５を支持固定している。The first metal cylindrical body 7 has approximately the same outer diameter as the concave mirror 5, and supports and fixes the concave mirror 5 at one end thereof.
また第１の金属円筒体７とほぼ同径の第２の金属円筒体
８は、その一端縁に、これより内方へ突出した４個のタ
ーゲット支持片１７を固着してなり、この支持片１７の
先端にターゲット電極６が固定されている。The second metal cylindrical body 8, which has approximately the same diameter as the first metal cylindrical body 7, has four target support pieces 17 fixed to one end edge thereof and protrudes inward from the second metal cylindrical body 7. A target electrode 6 is fixed to the tip of the electrode 17.
２つの金属円筒体７，８は連結部９により一体に結合さ
れ電極構体１０を形或している。The two metal cylindrical bodies 7 and 8 are joined together by a connecting part 9 to form an electrode assembly 10.
なお１８はばね片で、前記電極構体１０をファンネル部
４の内面に支持するものである。Note that 18 is a spring piece that supports the electrode assembly 10 on the inner surface of the funnel portion 4.
連結部９は第３図に示すように、中央部に扶持部１９を
、両側に右ねじ部２０と左ねじ部２１とを有するねじ２
２と、金属円筒体７，８の内面に立てたねし穴を有する
保合部２３．２４とからなっている。As shown in FIG. 3, the connecting portion 9 is a screw 2 having a supporting portion 19 in the center and a right-handed threaded portion 20 and a left-handed threaded portion 21 on both sides.
2, and retaining parts 23 and 24 having perforated holes formed on the inner surfaces of the metal cylinders 7 and 8.
ねじ２２はこの投射型受像管の管軸方向に沿って位置し
、扶持部１９を外側から挾んで回すことにより２つの金
属円筒体７，８の間隔を変えることができる。The screw 22 is located along the tube axis direction of the projection picture tube, and can change the spacing between the two metal cylinders 7 and 8 by holding and turning the supporting portion 19 from the outside.
前記実施例では、連結部９として両側に右ねじ部２０と
左ねじ部２１とを有するねじ２２を用い、２つの金属円
筒体７，８を一体に結合するとともに、その間隔を変え
ることも可能であり、製造時に凹面鏡５と蛍光面１４と
の距離の微調整が容易にできる。In the above embodiment, a screw 22 having a right-handed threaded part 20 and a left-handed threaded part 21 on both sides is used as the connecting part 9, and the two metal cylindrical bodies 7 and 8 are connected together, and the interval between them can also be changed. Therefore, the distance between the concave mirror 5 and the fluorescent screen 14 can be easily finely adjusted during manufacturing.
またこの微調整は距離だけでなく、連結部９を数か所に
設けておけば、凹面鏡５と蛍光面１４との相対的角度を
微調整することも可能である。Further, this fine adjustment is not limited to the distance, but by providing the connecting portions 9 at several locations, it is also possible to finely adjust the relative angle between the concave mirror 5 and the fluorescent screen 14.
第４図は前記連結部の他の実施例を示すもので、保合部
２３ ａに一端のみ固着された小片２５を設けたもので
ある。FIG. 4 shows another embodiment of the connecting portion, in which a small piece 25 is provided with only one end fixed to the retaining portion 23a.
この小片２５がばねの働きをし、ねじ２２の緩みを防ぐ
とともに熱膨張による変形を少なくする。This small piece 25 acts as a spring to prevent the screw 22 from loosening and to reduce deformation due to thermal expansion.
なお前記実施例では連結部９を金属円筒体７，８の内面
側に設けたが、その外面側に設けても全く同様で゛ある
。In the above embodiment, the connecting portions 9 were provided on the inner surfaces of the metal cylinders 7 and 8, but the connection portions 9 may be provided on the outer surfaces as well.
以上のように本考案は、電子ビームを発する電子銃と、
前記電子ビームの照射により可視光を発する蛍光面を有
するターゲット電極と、前記可視光を前方へ反射する凹
面鏡と、前記ターゲット電極と前記凹面鏡とを支持する
支持体と、前記電子ビームの集束手段と偏向手段とから
なる投射型受像管において、前記支持体を前記凹面鏡を
固定した第１の金属円筒体と、前記ターゲット電極を固
定した第２の金属円筒体と、前記第１および第２の金属
円筒体を連結するために管軸方向に長くかつ両金属円筒
体の一部分に螺合したねじ部分を有する複数本のねじと
で構或したから、蛍光面と鏡面との相体的位置を微細か
つ連続的に、しかも両者間の結合状態を解いたり緩めた
りすることなく安定に調整でき、品質および生産性の高
い投射型受像管を得ることができる。As described above, the present invention includes an electron gun that emits an electron beam,
a target electrode having a fluorescent screen that emits visible light when irradiated with the electron beam; a concave mirror that reflects the visible light forward; a support that supports the target electrode and the concave mirror; and a focusing means for the electron beam. In a projection type picture tube, the support body is composed of a first metal cylindrical body to which the concave mirror is fixed, a second metal cylindrical body to which the target electrode is fixed, and the first and second metals. In order to connect the cylindrical bodies, a plurality of screws were used which were long in the tube axis direction and had threaded parts that were threaded into parts of both metal cylindrical bodies, so the relative positions of the fluorescent screen and the mirror surface could be finely adjusted. Further, it is possible to obtain a projection type picture tube that can be continuously and stably adjusted without undoing or loosening the connection between the two, and has high quality and productivity.
第１図は本考案の投射型受像管の一実施例を示す断面図
、第２図は同受像管の要部斜視図、第３図は同要部の拡
大斜視図、第４図は他の実施例の要部拡大斜視図である
。
３・・・・・・電子銃、５・・・・・・凹面鏡、７・・
・・・・第１の金属円筒体、８・・・・・・第２の金属
円筒体、９・・・・・・連結部、１４・・・・・・蛍光
面、１６・・・・・・集束コイル、２２・・・・・・ね
じ。Fig. 1 is a sectional view showing an embodiment of the projection type picture tube of the present invention, Fig. 2 is a perspective view of the main part of the picture tube, Fig. 3 is an enlarged perspective view of the main part, and Fig. 4 is another example. FIG. 2 is an enlarged perspective view of a main part of the embodiment. 3...electron gun, 5...concave mirror, 7...
...First metal cylindrical body, 8...Second metal cylindrical body, 9...Connecting portion, 14...Fluorescent screen, 16... ...Focusing coil, 22...screw.
Claims (1)
より可視光を発する蛍光面を有するターゲット電極と、
前記可視光を前方へ反射する凹面鏡と、前記ターゲット
電極と前記凹面鏡とを支持する支持体と、前記電子ビー
ムの集束手段と偏向手段とからなり、前記支持体は前記
凹面鏡を固定した第１の金属円筒体と、前記ターゲット
電極を固定した第２の金属円筒体と、前記第１および第
２の金属円筒体を連結するために管軸方向に長くかつ両
金属円筒体の一部分に螺合したねじ部分を有する複数体
のねじとからなることを特徴とする投射型受像管。an electron gun that emits an electron beam; a target electrode that has a fluorescent screen that emits visible light when irradiated with the electron beam;
The support body includes a concave mirror that reflects the visible light forward, a support body that supports the target electrode and the concave mirror, and a focusing means and a deflection means for the electron beam. A metal cylindrical body, a second metal cylindrical body to which the target electrode is fixed, and a metal cylindrical body that is long in the tube axis direction and screwed into a part of both metal cylindrical bodies to connect the first and second metal cylindrical bodies. 1. A projection picture tube comprising a plurality of screws each having a threaded portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9789877U JPS597727Y2 (en) | 1977-07-21 | 1977-07-21 | Projection picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9789877U JPS597727Y2 (en) | 1977-07-21 | 1977-07-21 | Projection picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5425020U JPS5425020U (en) | 1979-02-19 |
| JPS597727Y2 true JPS597727Y2 (en) | 1984-03-09 |
Family
ID=29033162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9789877U Expired JPS597727Y2 (en) | 1977-07-21 | 1977-07-21 | Projection picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS597727Y2 (en) |
-
1977
- 1977-07-21 JP JP9789877U patent/JPS597727Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5425020U (en) | 1979-02-19 |
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