JPH0217901B2 - - Google Patents
Info
- Publication number
- JPH0217901B2 JPH0217901B2 JP11445181A JP11445181A JPH0217901B2 JP H0217901 B2 JPH0217901 B2 JP H0217901B2 JP 11445181 A JP11445181 A JP 11445181A JP 11445181 A JP11445181 A JP 11445181A JP H0217901 B2 JPH0217901 B2 JP H0217901B2
- Authority
- JP
- Japan
- Prior art keywords
- thermal expansion
- metal piece
- shadow mask
- coefficient
- 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
- 239000002184 metal Substances 0.000 claims description 82
- 229910052751 metal Inorganic materials 0.000 claims description 82
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000010894 electron beam technology Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims 2
- 239000010935 stainless steel Substances 0.000 claims 2
- 238000003466 welding Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000008646 thermal stress Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000035882 stress Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001374 Invar Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/06—Screens for shielding; Masks interposed in the electron stream
- H01J29/07—Shadow masks for colour television tubes
- H01J29/073—Mounting arrangements associated with shadow masks
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Description
【発明の詳細な説明】
本発明は色選別電極としてシヤドウマスクを有
するカラー受像管に係り、特にそのシヤドウマス
ク支持構体に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color picture tube having a shadow mask as a color selection electrode, and particularly to its shadow mask support structure.
シヤドウマスクを有するカラー受像管において
は、稼動中シヤドウマスクが電子ビームの衝撃を
受けて加熱され、熱膨張しシヤドウマスクの電子
ビーム透過孔によつて規定される螢光スクリーン
への電子ビーム通路が変化するため色ずれを生じ
る。このため、シヤドウマスクを外囲器内の螢光
スクリーンに近接して支持するシヤドウマスク支
持構体にシヤドウマスクの熱膨張による電子ビー
ム通路の変化を補償するように温度上昇につれて
シヤドウマスクを螢光スクリーン側へ近づけるよ
うな補償手段をもたせている。 In a color picture tube having a shadow mask, during operation, the shadow mask is heated by the impact of the electron beam, expands thermally, and changes the path of the electron beam to the fluorescent screen defined by the electron beam transmission holes in the shadow mask. Color shift occurs. For this reason, the shadow mask support structure that supports the shadow mask close to the fluorescent screen in the envelope is designed to move the shadow mask closer to the fluorescent screen as the temperature rises to compensate for changes in the electron beam path due to thermal expansion of the shadow mask. We have adequate means of compensation.
このような補償手段としては、例えば特公昭44
−3547号公報または米国特許第3803436号明細書
に記載されているような低熱膨張金属片と高熱膨
張金属片とを貼合せてなるバイメタルをシヤドウ
マスク支持構体の一部に使用するもの、或は特公
昭47−28191号公報または米国特許第3573527号明
細書に記載されているように低熱膨張金属片と高
熱膨張金属片の２種を長手方向に並設したバイメ
タルでシヤドウマスク支持構体を形成したものが
知られている。 As such compensation means, for example,
-3547 or U.S. Pat. No. 3,803,436, in which a bimetal formed by laminating a low thermal expansion metal piece and a high thermal expansion metal piece is used as a part of the shadow mask support structure, or a special As described in Publication No. 47-28191 or U.S. Pat. No. 3,573,527, a shadow mask support structure is formed of a bimetal in which two types of metal pieces, a low thermal expansion metal piece and a high thermal expansion metal piece, are arranged side by side in the longitudinal direction. Are known.
これら既知のシヤドウマスク支持構体は、いず
れも一端部はシヤドウマスクを保持したマスクフ
レームに溶接され、他端部はパネルに植設された
パネルピンに係止されている。この場合、マスク
フレームとシヤドウマスク支持構体との固定を強
固にするために、マスクフレームとシヤドウマス
ク支持構体とは複数個所において溶接されてい
る。 In each of these known shadow mask support structures, one end is welded to a mask frame holding a shadow mask, and the other end is locked to a panel pin implanted in a panel. In this case, in order to firmly fix the mask frame and the shadow mask support structure, the mask frame and the shadow mask support structure are welded at a plurality of locations.
前述のシヤドウマスク支持構体は、カラー受像
管の動作中の温度上昇による電子ビームの特定発
光螢光体へのミスランデイング防止という機能に
対しては充分な作用を行なうものの、カラー受像
管の製造工程で受ける高温の熱処理により下記の
如き特性の劣化をもたらすことが明らかになつ
た。 Although the shadow mask support structure described above has a sufficient function of preventing mislanding of the electron beam to a specific light-emitting phosphor due to temperature rise during color picture tube operation, it It has become clear that the high-temperature heat treatment that is applied causes the following properties to deteriorate.
即ちカラー受像管の製造工程、例えば排気工程
などでは400〜450℃とカラー受像管の動作中の温
度70〜80℃に比べ極めて高温の熱処理が行なわれ
る。その結果、この工程ではシヤドウマスク、マ
スクフレーム及びシヤドウマスク支持構体も熱膨
張する。ところでシヤドウマスク支持構体はバイ
メタルからなり、マスクフレームと熱膨張係数が
異なり、両者の接合部分に熱歪を発生する。すな
わち支持構体は重いシヤドウマスク構成を保持す
る必要上、マスクフレームの側壁部に数個所のス
ポツト溶接で固着されており、両部材の熱膨張差
に基づく熱応力は溶接点に作用する。高い熱処理
温度によりこの熱応力は非常に大きく、マスクフ
レーム或はシヤドウマスク支持構体に永久変形を
生じることがあり、シヤドウマスクと螢光スクリ
ーンとの相対位置関係にずれを発生させ、カラー
受像管の色再現性を劣化させることがある。しか
もこの熱歪みの影響を減じるためにスタビライジ
ング炉を通して熱的に安定させるなどの処理が不
可欠であつた。 That is, in the manufacturing process of color picture tubes, such as the exhaust process, heat treatment is performed at a temperature of 400 to 450°C, which is much higher than the temperature of 70 to 80°C during operation of color picture tubes. As a result, the shadow mask, mask frame, and shadow mask support structure also undergo thermal expansion during this step. By the way, the shadow mask support structure is made of bimetal and has a different thermal expansion coefficient from the mask frame, causing thermal strain at the joint between the two. That is, in order to support the heavy shadow mask configuration, the support structure is fixed to the side wall of the mask frame by spot welding at several locations, and thermal stress based on the difference in thermal expansion between the two members acts on the welding points. Due to the high heat treatment temperature, this thermal stress is extremely large and may cause permanent deformation of the mask frame or shadow mask support structure, causing a shift in the relative position between the shadow mask and the fluorescent screen, and impairing the color reproduction of the color picture tube. It may cause deterioration of sex. Furthermore, in order to reduce the effects of this thermal distortion, it was essential to thermally stabilize the material by passing it through a stabilizing furnace.
本発明はカラー受像管の製造工程での熱処理に
おいて、マスクフレーム、シヤドウマスク支持構
体の位置関係に永久変形が発生するのを防止し、
所定のシヤドウマスクと螢光スクリーンとの位置
関係を保持する機械的に強固であり、ばね定数を
強くすることが可能なシヤドウマスク支持構体を
有するカラー受像管を提供することを目的として
いる。 The present invention prevents permanent deformation in the positional relationship between the mask frame and the shadow mask support structure during heat treatment in the manufacturing process of color picture tubes,
It is an object of the present invention to provide a color picture tube having a mechanically strong shadow mask support structure that maintains a predetermined positional relationship between a shadow mask and a fluorescent screen and can have a strong spring constant.
次に第１図乃至第４図により本発明のカラー受
像管の一実施例を説明する。 Next, one embodiment of the color picture tube of the present invention will be explained with reference to FIGS. 1 to 4.
即ち、シヤドウマスクを有するカラー受像管を
構成する外囲器１０はパネル１１フアンネル１２
及びネツク１３からなり、パネル１１の内面には
赤、緑及び青に発光する螢光スクリーン１４が被
着形成され、ネツク１３には電子銃１５が内装さ
れている。また軟鉄からなるシヤドウマスク１６
の多数の円状、矩形状などの電子ビーム透過孔を
有し、電子銃１５から発射された電子ビーム１９
を選択的に螢光スクリーン１４に到達させて特定
発光色の螢光体ドツトまたはストライプを励起発
光させる。シヤドウマスク１６の周囲は鉄板を成
形し、例えば矩形枠状としたマスクフレーム１７
で保持している。シヤドウマスク１６とマスクフ
レーム１７との接合は点溶接を局部的に施して行
なう。そしてこのシヤドウマスク１６とマスクフ
レーム１７とでシヤドウマスク構体１８を構成す
る。 That is, an envelope 10 constituting a color picture tube having a shadow mask includes a panel 11 and a funnel 12.
A fluorescent screen 14 that emits red, green, and blue light is adhered to the inner surface of the panel 11, and an electron gun 15 is housed in the neck 13. Also, a shadow mask 16 made of soft iron
The electron beam 19 emitted from the electron gun 15 has a large number of circular, rectangular, etc. electron beam transmission holes.
selectively reaches the fluorescent screen 14 to excite fluorescent dots or stripes of a specific luminescent color and cause them to emit light. The periphery of the shadow mask 16 is a mask frame 17 made of iron plate, for example, in the shape of a rectangular frame.
It is held in The shadow mask 16 and the mask frame 17 are joined by spot welding locally. This shadow mask 16 and mask frame 17 constitute a shadow mask structure 18.
マスクフレーム１７の管軸２１とほぼ平行な外
側壁にはマスクフレーム周囲の３または４個所に
シヤドウマスク支持構体３０が接続等で固定され
る。一方、パネル１１のスカート部にパネルピン
２０が外囲器内に突出するように植設されてい
る。このシヤドウマスク支持構体３０をパネルピ
ン２０に係止させることにより、シヤドウマスク
構体１８は外囲器内に確固に弾性的に保持され、
シヤドウマスク１６が螢光スクリーン１４に所定
の間隔で近接配置されている。 Shadow mask support structures 30 are fixed to the outer wall of the mask frame 17 substantially parallel to the tube axis 21 at three or four locations around the mask frame by connections or the like. On the other hand, a panel pin 20 is implanted in the skirt portion of the panel 11 so as to protrude into the envelope. By locking this shadow mask support structure 30 to the panel pin 20, the shadow mask structure 18 is firmly and elastically held within the envelope.
A shadow mask 16 is arranged close to the fluorescent screen 14 at a predetermined interval.
第２図及び第３図はシヤドウマスク支持構体３
０をマスクフレーム１７に固定した状態を示す。 Figures 2 and 3 show the shadow mask support structure 3.
0 is shown fixed to the mask frame 17.
即ち、シヤドウマスク支持構体３０はマスクフ
レーム１７とほぼ等しい熱膨張係数を有する細条
状の中央弾性金属片３１とこの中央弾性金属片３
１の一主面の長手方向の一方の端縁部に沿つて積
層接合された中央弾性金属片３１よりも高い熱膨
張係数を有する細条状の高熱膨張金属片３２と、
中央弾性金属片３１の一主面の長手方向の他方の
端縁部に沿つて積層接合された中央弾性金属片３
１より熱膨張係数が小さい細条状の低熱膨張金属
片３３とからなり、各金属片３１，３２，３３は
極部的または全面を溶接し、断面凸状に形成さ
れ、全体として弾性体として働くようになつてい
る。 That is, the shadow mask support structure 30 includes a strip-shaped central elastic metal piece 31 having a coefficient of thermal expansion approximately equal to that of the mask frame 17, and this central elastic metal piece 3.
A strip-shaped high thermal expansion metal piece 32 having a higher coefficient of thermal expansion than the central elastic metal piece 31 laminated and bonded along one edge in the longitudinal direction of one main surface of the metal piece 1;
A central elastic metal piece 3 laminated and bonded along the other longitudinal edge of one main surface of the central elastic metal piece 31
Each of the metal pieces 31, 32, 33 is partially or entirely welded to form a convex cross section, and the whole is made of an elastic body. I'm starting to work.
このようなシヤドウマスク支持構体３０の一端
部３４と他端３６とは中央部３５に対して相互に
反対方向に所定角度だけ折曲される。このシヤド
ウマスク構体３０はマスクフレーム１７の外囲器
軸、即ち管軸２１とほぼ平行をなす外側壁２２に
一端部３４が溶接されている。この場合マスクフ
レーム１７との溶接部３７は中央弾性金属片３１
部分に数個所設定し、強固に取付ける。マスクフ
レーム１７へは高熱膨張金属片３２が螢光スクリ
ーン１４側に位置するように取付ける。一方、シ
ヤドウマスク支持構体３０の他端部３６の中央弾
性金属片３１部分にパネルピンと嵌合するための
係止孔部３７が設けられている。 One end 34 and the other end 36 of the shadow mask support structure 30 are bent at a predetermined angle in opposite directions with respect to the center 35. This shadow mask structure 30 has one end 34 welded to the outer wall 22 which is substantially parallel to the envelope axis of the mask frame 17, that is, the tube axis 21. In this case, the welding part 37 with the mask frame 17 is the central elastic metal piece 31.
Set it in several places on the part and attach it firmly. The high thermal expansion metal piece 32 is attached to the mask frame 17 so as to be located on the fluorescent screen 14 side. On the other hand, a locking hole 37 for fitting a panel pin is provided in a portion of the central elastic metal piece 31 of the other end 36 of the shadow mask support structure 30.
シヤドウマスク支持構体３０はカラー受像管の
製造工程でシヤドウマスク構体１８がパネルピン
２０に何度も取着、取りはずしが行なわれ、また
耐振性を得るため、かなり強固な弾性体であるこ
とが要求される。更にカラー受像管の製造工程に
おける400〜450℃の高温の熱処理によつても弾性
を損なわないことが望まれる。マスクフレーム１
７に使用される冷間圧延鋼板が熱膨張係数120×
10-7／℃であることから、本実施例では中央弾性
金属片３１の材料として析出硬化系のJIS規格631
（17Cr−7Ni−Al−Fe、熱膨張係数116×10-7／
℃）を1000℃で析出硬化させ、圧延・成形後480
℃で１時間の焼鈍を施したものを用いた。パネル
ピン２０に使われる材料がパネル１１のガラスの
熱膨張係数が115×10-7／℃程度の18Cr−Fe合金
からなることから、これに近い中央弾性金属片３
１の100〜130×10-7／℃の係数は支持構体３０、
パネルピン２０間の係合にも好ましいものとな
る。パネルピン２０はテーパ状の側壁を有し、こ
れに支持構体３０の係止孔部３７が着脱可能に嵌
合するが両者間の熱膨張係数に大きな差がある
と、両者が不所望に喰いこみを起し、精度よくシ
ヤドウマスク構体１８を保持できない。しかし本
実施例においてはこのような不都合を生じない。 The shadow mask support structure 30 is required to be a fairly strong elastic body since the shadow mask structure 18 is attached to and removed from the panel pins 20 many times during the manufacturing process of color picture tubes, and in order to obtain vibration resistance. Furthermore, it is desirable that the elasticity not be impaired even by heat treatment at a high temperature of 400 to 450° C. in the manufacturing process of color picture tubes. mask frame 1
The cold rolled steel plate used in 7 has a thermal expansion coefficient of 120×
10 -7 /°C, in this example, the material of the central elastic metal piece 31 is JIS standard 631, which is a precipitation hardening type.
(17Cr−7Ni−Al−Fe, thermal expansion coefficient 116×10 -7 /
℃) is precipitation hardened at 1000℃, and after rolling and forming, the temperature is 480℃.
The material was annealed at ℃ for 1 hour. Since the material used for the panel pin 20 is an 18Cr-Fe alloy whose coefficient of thermal expansion is approximately 115×10 -7 /℃ of the glass of the panel 11, the central elastic metal piece 3 is similar to the material used for the panel pin 20.
The coefficient of 100 to 130×10 -7 /℃ is the support structure 30,
This is also preferable for the engagement between the panel pins 20. The panel pin 20 has a tapered side wall, into which the locking hole 37 of the support structure 30 is removably fitted, but if there is a large difference in the coefficient of thermal expansion between the two, they may bite undesirably. This causes the shadow mask structure 18 to not be held accurately. However, in this embodiment, such a problem does not occur.
低熱膨張金属片３３としてはアンバーのような
36Ni−64Fe合金（熱膨張係数15×10-7／℃）を
用い、一方高熱膨張金属片３２としてはSUS302
（18Cr−8Ni−Fe、熱膨張係数173×10-7／℃）を
用いた。 The low thermal expansion metal piece 33 is made of amber-like material.
A 36Ni-64Fe alloy (thermal expansion coefficient 15×10 -7 /°C) was used, while SUS302 was used as the high thermal expansion metal piece 32.
(18Cr-8Ni-Fe, thermal expansion coefficient 173×10 -7 /°C) was used.
上述した一実施例のシヤドウマスク支持構体３
０の詳細は第４図に示すように19インチ用のもの
で各金属片３１，３２，３３のそれぞれの幅e1，
e2，e3が５mm板厚ｄが0.8mmに選ばれ、また支持
構体３０は一端部３４の長さl1が27mm中央部３５
の長さl3が42mm、他端部３６の長さl2が15mmパネ
ルピンとの係止孔部３７の直径は８mm積層接合部
の幅e4，e5は約２mmに設定された。尚低熱膨張金
属片３３としてアンバーを用いる場合、アンバー
は機械的強度が弱いのでシヤドウマスク支持構体
３０の機械的強度を考慮するとアンバーの幅は支
持構体の全幅の1/3以下が望ましい。 Shadow mask support structure 3 of one embodiment described above
The details of 0 are for 19 inches as shown in Fig. 4, and the width e 1 of each metal piece 31, 32, 33,
e 2 and e 3 are selected to be 5 mm, and the plate thickness d is selected to be 0.8 mm, and the length l 1 of the one end portion 34 of the support structure 30 is selected to be 27 mm, and the center portion 35 is selected to be 5 mm.
The length l 3 of the other end 36 was set to 42 mm, the length l 2 of the other end 36 was set to 15 mm, the diameter of the locking hole 37 with the panel pin was set to 8 mm, and the widths e 4 and e 5 of the laminated joint portion were set to about 2 mm. Note that when amber is used as the low thermal expansion metal piece 33, since amber has low mechanical strength, when considering the mechanical strength of the shadow mask support structure 30, the width of the amber is preferably 1/3 or less of the total width of the support structure.
さて、上述のように構成されたシヤドウマスク
支持構体３０はマスクフレーム１７に溶接固定さ
れ、またパネルピン２０と嵌合される中央弾性金
属片３１が両金属とほぼ等しい熱膨張係数をもつ
ので、カラー受像管の製造工程における排気工程
での高温の熱処理において、マスクフレーム１７
とシヤドウマスク支持構体３０の溶接点３７間の
両部材の熱膨張はほぼ等しくなり、熱膨張量の差
により溶接点に作用する熱応力を極めて小さくす
ることができ、溶接部位における永久変形に起因
するシヤドウマスク１６と螢光スクリーン１４の
位置関係のずれというカラー受像管における致命
的欠陥を生じることがない。溶接点３７近傍では
高熱膨張金属片３２、低熱膨張金属片３３がマス
クフレーム１７から浮いているのでシヤドウマス
ク１６をマスクフレーム１７に保持する時の逃げ
が得られ、支持構体３０の取付け位置の選択の自
由度が増加するし、また支持構体３０の熱変形時
に不所望な応力が生じない。即ち、高熱膨張金属
片３２と低熱膨張金属片３３は中央弾性金属片３
１の同一面側に固定されているので、熱膨張時に
支持構体の長手方向に直角の短手方向側に生ずる
応力は中央弾性金属片３１の両側で夫々逆方向に
働き全体として相殺されるので不所望な応力は生
じない。更に中央弾性金属片３１と高熱膨張金属
片３２、低熱膨張金属片３３よつて形成される断
面形状がほぼ凸形状と機械的に強い形となつてい
るので支持構体３０としての弾性強度が上昇し、
従つて各素材の厚さも薄くすることが可能であ
る。従つて従来不可欠であつたスタビライジング
炉を通すという熱処理を不要にできカラー受像管
の製造コストを安価にするし、支持構体３０の製
造も簡単になる。またパネルピン２０との係止部
においてもパネルピン２０に喰いこむ量が少なく
熱処理後においても所定のシヤドウマスクと螢光
スクリーンとの間隔を保つごとに寄与することが
できる。 Now, the shadow mask support structure 30 configured as described above is fixed to the mask frame 17 by welding, and since the central elastic metal piece 31 fitted with the panel pin 20 has approximately the same coefficient of thermal expansion as both metals, color image reception is possible. In the high temperature heat treatment in the exhaust process in the tube manufacturing process, the mask frame 17
The thermal expansion of both members between the welding point 37 of the shadow mask support structure 30 and the welding point 37 of the shadow mask support structure 30 becomes almost equal, and the thermal stress acting on the welding point can be made extremely small due to the difference in the amount of thermal expansion. A fatal defect in the color picture tube, such as misalignment between the shadow mask 16 and the fluorescent screen 14, does not occur. In the vicinity of the welding point 37, the high thermal expansion metal piece 32 and the low thermal expansion metal piece 33 are floating from the mask frame 17, which provides relief when holding the shadow mask 16 on the mask frame 17, making it easy to select the mounting position of the support structure 30. The degree of freedom is increased and undesired stresses are not generated during thermal deformation of the support structure 30. That is, the high thermal expansion metal piece 32 and the low thermal expansion metal piece 33 are the central elastic metal piece 3.
1, the stress generated on the short side perpendicular to the longitudinal direction of the support structure during thermal expansion acts in opposite directions on both sides of the central elastic metal piece 31 and is canceled out as a whole. No undesired stresses occur. Furthermore, since the cross-sectional shape formed by the central elastic metal piece 31, the high thermal expansion metal piece 32, and the low thermal expansion metal piece 33 is approximately convex and mechanically strong, the elastic strength of the support structure 30 is increased. ,
Therefore, it is possible to reduce the thickness of each material. Therefore, the heat treatment of passing through a stabilizing furnace, which has been indispensable in the past, is no longer necessary, which reduces the manufacturing cost of the color picture tube and also simplifies the manufacturing of the support structure 30. Furthermore, the portion that engages with the panel pin 20 has a small amount of biting into the panel pin 20, and can contribute to maintaining a predetermined distance between the shadow mask and the fluorescent screen even after heat treatment.
前記実施例ではシヤドウマスク支持構体は、中
央弾性金属片とその両側に積層接合部を介して設
けられた高及び低熱膨張金属片の３つのそれぞれ
熱膨張係数の異なる金属片によて構成されていた
が、カラー受像管の移動時におけるシヤドウマス
クの熱膨張に対する補償を行なうことは、マスク
フレームとほぼ等しい熱膨張係数を有する弾性金
属片と、この弾性金属片の一主面の長手方向の一
方の端縁部に沿つて積層接合された高或は低熱膨
張金属片との二者の組合せ構造によつても可能で
ある。しかしながら、この二者の組合せ構造では
両金属片の熱膨張係数差が必然的に小さくなり、
温度変化に対して完全な補償を行なうためにはシ
ヤドウマスク支持構体のマスクフレームとの溶接
点とパネルピンとの係上部との距離を大きく、つ
まりシヤドウマスク支持構体の長さを長くしなく
てはならない。このような長さを長くされたシヤ
ドウマスク支持構体は振動に対して厚さ方向への
ねじれ、変形に弱く重いシヤドウマスク構体を支
持するための支持構体に要求される特性を満足す
るものではない。これに対して実施例のシヤドウ
マスク支持構体では高及低熱膨張金属片を幅狭側
面でつき合せたバイメタルと同様の偏位量を得る
ことができ支持構体の長大化を招くことがなく、
カラー受像管の振動によつてもねじれ変形を起こ
すことがない利点がある。 In the above embodiment, the shadow mask support structure was composed of three metal pieces having different coefficients of thermal expansion: a central elastic metal piece and high and low thermal expansion metal pieces provided on both sides of the central elastic metal piece via laminated joints. However, in order to compensate for the thermal expansion of the shadow mask when the color picture tube is moved, an elastic metal piece having a coefficient of thermal expansion approximately equal to that of the mask frame and one longitudinal end of one main surface of this elastic metal piece are used. A combination of the two with high or low thermal expansion metal pieces laminated and bonded along the edges is also possible. However, in this combination structure of the two, the difference in the coefficient of thermal expansion between the two metal pieces will inevitably become smaller.
In order to completely compensate for temperature changes, the distance between the welding point of the shadow mask support structure to the mask frame and the engagement part of the panel pin must be increased, that is, the length of the shadow mask support structure must be increased. A shadow mask support structure having such a long length is susceptible to twisting and deformation in the thickness direction due to vibration, and does not satisfy the characteristics required of a support structure for supporting a heavy shadow mask structure. On the other hand, the shadow mask support structure of the embodiment can obtain the same amount of deflection as a bimetal in which high and low thermal expansion metal pieces are brought together on narrow sides, and does not cause the support structure to become elongated.
This has the advantage that torsional deformation does not occur even when the color picture tube vibrates.
第５図は本発明のカラー受像管の他の実施例に
使用されるシヤドウマスク支持構体を示す。 FIG. 5 shows a shadow mask support structure used in another embodiment of the color picture tube of the present invention.
即ちシヤドウマスク支持構体２０はSUS631か
らなる中央弾性金属片４１とアンバーからなる低
熱膨張金属片４３とSUS302からなる高熱膨張金
属片４２からなり、各金属片４１，４２，４３の
幅はそれぞれ8.0mm、3.8mm、3.8mmであり、パネル
ピンとの係止孔部４４が中央弾性金属片４１にの
み包含されるように設けられている。また各金属
片４１，４２，４３の積層接合は×印で示すよう
に１mm間隔のスポツト溶接で接合されている。こ
の実施例においては係止孔部４４が中央弾性金属
片４１にのみ包含されているので、カラー受像管
の製造時においてシヤドウマスク支持構体４０が
パネルピンに喰いこむことがより少なくなる利点
を有する。また各金属片４１，４２，４３の接合
部では熱膨張係数差が小さいため支持構体が熱変
形する場合にも接合部での熱応力は小なく、それ
ぞれの接合部を必ずしも切れ目なく全面で強固に
接合する必要はなく、本実施例のようにスポツト
溶接で機械的強度は充分であつた。このように各
金属片をスポツトし溶接で接合した場合には溶接
が簡単で短時間で行なえるため接合時の熱の発生
が少なく、シヤドウマスク支持構体の製造時の支
持構体が変形することが少なく、精度の良い支持
構体が安価に得られる。尚第４図に示す構造にお
いて各金属片を第５図のようにスポツト溶接する
場合には、パネルピンとの係止孔部３７が３つの
金属片に及んでいるため、機械的強度を考慮した
場合先端部３６では連続的に溶接することが望ま
しい。 That is, the shadow mask support structure 20 consists of a central elastic metal piece 41 made of SUS631, a low thermal expansion metal piece 43 made of invar, and a high thermal expansion metal piece 42 made of SUS302, and the width of each metal piece 41, 42, 43 is 8.0 mm, respectively. 3.8 mm, and 3.8 mm, and is provided so that the locking hole 44 with the panel pin is included only in the central elastic metal piece 41. The metal pieces 41, 42, and 43 are laminated and joined by spot welding at intervals of 1 mm, as shown by the x marks. In this embodiment, since the locking hole portion 44 is included only in the central elastic metal piece 41, there is an advantage that the shadow mask support structure 40 is less likely to bite into the panel pin during the manufacture of a color picture tube. In addition, since the difference in coefficient of thermal expansion is small at the joints between the metal pieces 41, 42, and 43, even if the support structure is thermally deformed, the thermal stress at the joints is not small, and each joint is strong over the entire surface without any gaps. There was no need to join the parts to each other, and spot welding as in this example provided sufficient mechanical strength. When each metal piece is spotted and welded together in this way, welding is easy and can be done in a short time, so less heat is generated during joining, and the support structure is less likely to deform when manufacturing the shadow mask support structure. , a highly accurate support structure can be obtained at low cost. In the structure shown in Fig. 4, when each metal piece is spot welded as shown in Fig. 5, the locking hole 37 with the panel pin extends over three metal pieces, so mechanical strength must be considered. In this case, it is desirable to weld the tip 36 continuously.
第６図は本発明のカラー受像管の更に他の実施
例に使用するシヤドウマスク支持構体５０を示す
ものである。 FIG. 6 shows a shadow mask support structure 50 used in yet another embodiment of the color picture tube of the present invention.
即ちシヤドウマスク構体は低熱膨張金属片５３
としてアンバーからなる第１の低熱膨張金属片５
４析出硬化系の低熱膨張金属（Ni32−Co14−
Ti1.6−Fe、熱膨張係数58×10-7／℃、800℃で30
分析出硬化させた後600℃で24時間焼鈍）からな
る第２の低熱膨張金属片５５からなつている。中
央弾性金属片５１及び高熱膨張金属片５２はそれ
ぞれSUS631、SUS302で構成されている。各金
属片５４，５５，５１及び５２は積層接合部を除
いて幅３mm、３mm、５mm、３mmであり断面形状
は、金属片５１と５４を端面接合した場合ほぼ凸
字形となつており、シーム溶接またはスポツト溶
接で一体化されている。本実施例ではスプリング
特性の弱いアンバーの量を減ずることができ、よ
り耐振性にすぐれたシヤドウマスク支持構体を備
えるカラー受像管が得られる利点がある。 That is, the shadow mask structure is made of a low thermal expansion metal piece 53.
A first low thermal expansion metal piece 5 made of amber as
4 Precipitation hardening low thermal expansion metal (Ni32−Co14−
Ti1.6−Fe, thermal expansion coefficient 58×10 -7 /℃, 30 at 800℃
The second low thermal expansion metal piece 55 is composed of a second low thermal expansion metal piece 55 which is annealed at 600° C. for 24 hours after being analytically hardened. The central elastic metal piece 51 and the high thermal expansion metal piece 52 are made of SUS631 and SUS302, respectively. Each of the metal pieces 54, 55, 51, and 52 has a width of 3 mm, 3 mm, 5 mm, and 3 mm, excluding the laminated joints, and the cross-sectional shape is approximately convex when the metal pieces 51 and 54 are joined face-to-face, with a seam. Integrated by welding or spot welding. This embodiment has the advantage that the amount of amber having weak spring characteristics can be reduced, and a color picture tube having a shadow mask support structure with better vibration resistance can be obtained.
第１図乃至第４図は本発明のカラー受像管の一
実施例を示す図であり、第１図はカラー受像管の
概略説明図、第２図はシヤドウマスク構体にシヤ
ドウマスク支持構体を取着した状態を示す要部平
面図、第３図はシヤドウマスク支持構体によりシ
ヤドウマスク構体をパネルに取着した状態を示す
要部断面図、第４図はシヤドウマスク支持体の斜
視図、第５図及び第６図は本発明のカラー受像管
のそれぞれ他の実施例に使用するシヤドウマスク
支持構体である。
１０……外囲器、１６……シヤドウマスク、１
７……マスクフレーム、３０，４０，５０……シ
ヤドウマスク支持構体、３１，４１，５１……中
央弾性金属片、３２，４２，５２……高熱膨張金
属片、３３，５３……低熱膨張金属片。
1 to 4 are diagrams showing one embodiment of the color picture tube of the present invention, FIG. 1 is a schematic explanatory diagram of the color picture tube, and FIG. 2 is a diagram showing a shadow mask support structure attached to a shadow mask structure. 3 is a sectional view of the main parts showing the state in which the shadow mask structure is attached to the panel by the shadow mask support structure; FIG. 4 is a perspective view of the shadow mask support; FIGS. 5 and 6 are shadow mask support structures used in each of the other embodiments of the color picture tube of the present invention. 10... Envelope, 16... Shadow mask, 1
7...Mask frame, 30,40,50...Shadow mask support structure, 31,41,51...Central elastic metal piece, 32,42,52...High thermal expansion metal piece, 33,53...Low thermal expansion metal piece .
Claims (1)
スクと、このシヤドウマスクを周辺で保持したマ
スクフレームとからなるシヤドウマスク構体と、
内面に螢光スクリーンを形成したパネルと、この
パネルと共に外囲器を形成するフアンネル及びネ
ツクと、このネツク内に前記螢光スクリーンに対
設して前記シヤドウマスク構体を保持するシヤド
ウマスク支持構体とを具備するカラー受像管にお
いて前記シヤドウマスク支持構体は一端部が前記
マスクフレームに固定され、他端部が前記パネル
内壁に植設されたパネルピンに係止され、かつ前
記マスクフレームとほぼ等しい熱膨張係数を有す
る中央弾性金属片と、この中央弾性金属片の一主
面の長手方向の一方の端縁部に沿つて積層接合さ
れ前記中央弾性金属片よりも高い熱膨張係数を有
する高熱膨張金属片と、前記中央弾性金属片の一
主面の長手方向の他方の端縁部に沿つて積層接合
され、前記中央弾性金属片よりも低い熱膨張係数
を有する低熱膨張金属片とからなることを特徴と
するカラー受像管。 ２ 中央弾性金属片が100乃至130×10-7／℃の熱
膨張係数を有し、高熱膨張金属片が150×10-7／
℃以上の熱膨張係数を有し、低熱膨張金属片が80
×10-7／℃以下の熱膨張係数を有してなることを
特徴とする特許請求の範囲第１項記載のカラー受
像管。 ３ マスクフレームが鉄であり、中央弾性金属片
がステンレス鋼SUS631であり、高熱膨張金属片
がステンレス鋼SUS302であり、低熱膨張金属片
がアンバーであることを特徴とする特許請求の範
囲第１項記載のカラー受像管。 ４ 各金属片が局部的に接合されていることを特
徴とする特許請求の範囲第１項記載のカラー受像
管。 ５ 低熱膨張金属片が相互に熱膨張係数の異なる
２種の金属からなることを特徴とする特許請求の
範囲第１項記載のカラー受像管。 ６ 中央弾性金属片の熱膨張係数がパネルピンの
熱膨張係数とマスクフレームの熱膨張係数の間に
あることを特徴とする特許請求の範囲第１項記載
のカラー受像管。 ７ アンバーの幅がシヤドウマスク支持構体の全
幅の1/3以下であることを特徴とする特許請求の
範囲第３項記載のカラー受像管。[Scope of Claims] 1. A shadow mask structure consisting of a shadow mask having a large number of electron beam transmission holes, and a mask frame that holds the shadow mask at its periphery;
A panel having a fluorescent screen formed on its inner surface, a funnel and a neck forming an envelope together with the panel, and a shadow mask support structure disposed within the network and holding the shadow mask structure opposite to the fluorescent screen. In the color picture tube, the shadow mask support structure has one end fixed to the mask frame, the other end locked to a panel pin planted in the inner wall of the panel, and has a coefficient of thermal expansion substantially equal to that of the mask frame. a central elastic metal piece; a high thermal expansion metal piece that is laminated and bonded along one longitudinal edge of one main surface of the central elastic metal piece and has a higher coefficient of thermal expansion than the central elastic metal piece; A collar comprising a low thermal expansion metal piece that is laminated and bonded along the other longitudinal edge of one principal surface of the central elastic metal piece and has a lower coefficient of thermal expansion than the central elastic metal piece. Picture tube. 2. The central elastic metal piece has a coefficient of thermal expansion of 100 to 130×10 -7 /℃, and the high thermal expansion metal piece has a coefficient of thermal expansion of 150×10 -7 /℃.
A low thermal expansion metal piece with a coefficient of thermal expansion greater than 80℃
The color picture tube according to claim 1, characterized in that the color picture tube has a coefficient of thermal expansion of ×10 -7 /°C or less. 3. Claim 1, characterized in that the mask frame is made of iron, the central elastic metal piece is made of stainless steel SUS631, the high thermal expansion metal piece is made of stainless steel SUS302, and the low thermal expansion metal piece is made of amber. Color picture tube as described. 4. The color picture tube according to claim 1, wherein each metal piece is locally joined. 5. The color picture tube according to claim 1, wherein the low thermal expansion metal piece is made of two types of metals having mutually different coefficients of thermal expansion. 6. The color picture tube according to claim 1, wherein the coefficient of thermal expansion of the central elastic metal piece is between the coefficient of thermal expansion of the panel pin and the coefficient of thermal expansion of the mask frame. 7. The color picture tube according to claim 3, wherein the width of the amber is 1/3 or less of the total width of the shadow mask support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11445181A JPS5816442A (en) | 1981-07-23 | 1981-07-23 | Color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11445181A JPS5816442A (en) | 1981-07-23 | 1981-07-23 | Color picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5816442A JPS5816442A (en) | 1983-01-31 |
| JPH0217901B2 true JPH0217901B2 (en) | 1990-04-23 |
Family
ID=14638053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11445181A Granted JPS5816442A (en) | 1981-07-23 | 1981-07-23 | Color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5816442A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4614375A (en) * | 1985-10-21 | 1986-09-30 | General Motors Corporation | Sun visor stowed on pillar |
| US5502350A (en) * | 1993-07-05 | 1996-03-26 | Hitachi Metals Ltd. | Shadow mask support member having high strength and thermal deformation resistant low-expansion alloy plate and high expansion alloy plate and method of producing the same |
| US6265818B1 (en) | 1994-09-02 | 2001-07-24 | Philips Electronics North America Corporation | Stiffened support springs and CRT incorporating same |
-
1981
- 1981-07-23 JP JP11445181A patent/JPS5816442A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5816442A (en) | 1983-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0217901B2 (en) | ||
| JP2703881B2 (en) | Color picture tube | |
| US6683402B2 (en) | Color display tube provided with a color selection electrode | |
| RU2089006C1 (en) | Color kinescope (versions) | |
| JPS6113344B2 (en) | ||
| JP2000260343A (en) | Color cathode ray tube | |
| JPH0821332B2 (en) | Color picture tube | |
| JP2001057162A (en) | Color picture tube | |
| JPH08329850A (en) | Color cathode-ray tube | |
| JPH04262342A (en) | Shadow mask structure for color crt | |
| JP4068054B2 (en) | Mask support blade structure without welding for CRT | |
| JPH06176703A (en) | Shadow mask used for color picture tube | |
| JPS60127641A (en) | Shadow mask for color picture tube | |
| JPH1131461A (en) | Color picture tube and its manufacture | |
| JPH0822777A (en) | Color cathode-ray tube | |
| JPH07272635A (en) | Color cathode-ray tube | |
| KR200145254Y1 (en) | Cathode heater of crt | |
| JPH0446363Y2 (en) | ||
| JPH02177229A (en) | Manufacture of flat shadow mask body | |
| KR20000054916A (en) | Mask assembly for cathode ray tube | |
| JPH0473248B2 (en) | ||
| JPH06162944A (en) | Mounting structure of inner beam shield and inner magnetic shield on mask and mounting method therefor | |
| JPH02186535A (en) | Color television picture tube | |
| JPH11297227A (en) | Color selection electrode structure for cathode-ray tube | |
| JPS61188836A (en) | Color picture tube |