JPH0527209B2 - - Google Patents
Info
- Publication number
- JPH0527209B2 JPH0527209B2 JP58205802A JP20580283A JPH0527209B2 JP H0527209 B2 JPH0527209 B2 JP H0527209B2 JP 58205802 A JP58205802 A JP 58205802A JP 20580283 A JP20580283 A JP 20580283A JP H0527209 B2 JPH0527209 B2 JP H0527209B2
- Authority
- JP
- Japan
- Prior art keywords
- projection
- panel
- pad
- tube
- fluorescent surface
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000011521 glass Substances 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
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/87—Arrangements for preventing or limiting effects of implosion of vessels or containers
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は投射形のブラウン管に係り、特にパネ
ルを冷却する冷却形投射管に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a projection type cathode ray tube, and more particularly to a cooling type projection tube for cooling a panel.
投射形テレビジヨンに用いる高輝度投射管は、
高輝度を得るためにけい光面入力エネルギーを大
きくしているが、けい光体が塗布されたパネルは
ガラス製で、その熱伝導度を小さく、連続動作時
には熱放散の困難なパネル中央部が著しく高温に
なる。そのため、けい光体の温度依存性による輝
度低下、パネルの中央部と周辺部との温度差によ
るクラツク発生などの問題が生じる。
High-brightness projection tubes used in projection television are
In order to obtain high brightness, the input energy of the phosphor surface is increased, but the panel coated with the phosphor is made of glass, which reduces its thermal conductivity, and the central part of the panel, where heat dissipation is difficult during continuous operation, is It gets extremely hot. This causes problems such as a decrease in brightness due to the temperature dependence of the phosphor and the generation of cracks due to the temperature difference between the center and peripheral areas of the panel.
このような問題に対処するため、従来、第１図
に示すような冷却形投射管が提案されている。す
なわち、裏面にけい光面１０が形成されたけい光
面パネル１１の前方に所定間隔を保つて透明パネ
ル１２が配置され、両パネル１１，１２の周縁部
間には放熱効果を有する枠状の金属構体１３が挿
入されている。前記金属構体１３は前記両パネル
１１，１２に接着剤１４で接着されて内部空間１
５が密封され、この内部空間１５に透明なエチレ
ングリコールなどの冷媒が封入されている。 In order to deal with such problems, a cooled projection tube as shown in FIG. 1 has been proposed. That is, a transparent panel 12 is arranged at a predetermined distance in front of a phosphorescent panel 11 having a phosphorescent surface 10 formed on the back surface, and a frame-shaped frame having a heat dissipation effect is placed between the peripheral edges of both panels 11 and 12. A metal structure 13 is inserted. The metal structure 13 is bonded to both the panels 11 and 12 with an adhesive 14 to form the inner space 1.
5 is sealed, and this internal space 15 is filled with a refrigerant such as transparent ethylene glycol.
このように、けい光面パネル１１の前面外部を
透明な冷媒で冷却するので、けい光面パネル１１
中央部の温度上昇は少なくなり、輝度の低下も減
少し、またパネルクラツク発生も防止される。 In this way, since the front exterior of the fluorescent panel 11 is cooled with a transparent refrigerant, the fluorescent panel 11
The temperature rise in the central area is reduced, the decrease in brightness is also reduced, and the occurrence of panel cracks is also prevented.
ところで、かかる冷却形投射管をテレビジヨン
装置に組込み、投射レンズとの位置出しをする場
合、投射レンズの入力レンズとけい光面１０との
距離を所定の範囲に設定する必要がある。しかし
ながら、従来の冷却形投射管は、透明パネル１２
の厚さのばらつき、冷媒封入部の厚さのばらつ
き、けい光面パネル１１の厚さのばらつきなどに
より、前記した投射レンズの入力レンズとけい光
面１０との距離の精度が十分にとれなく、フオー
カスずれおよびコンバーゼンスずれが大きいとい
う欠点があつた。なお、１６は取付ラグを示す。
また、冷却機構の保持にも種々の問題があつた。 By the way, when such a cooled projection tube is incorporated into a television apparatus and its position relative to the projection lens is determined, it is necessary to set the distance between the input lens of the projection lens and the fluorescent surface 10 within a predetermined range. However, in the conventional cooled projection tube, the transparent panel 12
Due to variations in the thickness of the refrigerant sealing part, variations in the thickness of the refrigerant sealing part, variations in the thickness of the fluorescent surface panel 11, etc., the distance between the input lens of the projection lens and the fluorescent surface 10 cannot be determined sufficiently; The disadvantage was that the focus shift and convergence shift were large. Note that 16 indicates a mounting lug.
Furthermore, there were various problems in maintaining the cooling mechanism.
本発明の目的は、前述したような従来の欠点及
び問題を解決した優れた冷却形の投射形のブラウ
ン管を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide an improved cooling projection type cathode ray tube that overcomes the drawbacks and problems of the prior art as described above.
本発明は、バルブのフアンネル部にパツドを設
け、このパツドを基準に他の部材との距離を所定
の寸法に設定できること及び係止部として使用で
きるようにしたことを特徴とするものである。
The present invention is characterized in that a pad is provided in the funnel portion of the valve, and that the distance from other members can be set to a predetermined dimension based on this pad, and that it can be used as a locking portion.
以下本発明を図面に示す実施例によつて説明す
る。
The present invention will be explained below with reference to embodiments shown in the drawings.
まず、第２図は投射レンズとけい光面との距離
を所定の範囲に精度良く設定できる冷却形投射管
の一実施例を示すもので、第２図においてフアン
ネル部１７にはけい光面１０を基準としてパツド
１８が設けられている。このパツド１８とけい光
面１０との間隔は、けい光面パネル１１とフアン
ネル部１７を溶着する際に調整し、ばらつきが少
ないようにパツド１８をフアンネル部１７に取付
ける。一方、投射テレビ装置の橋体１９に固定さ
れたホルダー２０には、橋体固定部２０ａと、取
付ラグ取付部２０ｂと、前記パツド１８に当接さ
せる位置決め部２０ｃとが形成されている。前記
ホルダー２０は、例えばアルミダイカスト鋳物で
作り、特にパツド１８に接する位置決め部２０ｃ
の面と橋体１９に固定される橋体固定部２０ａの
面との間隔は高精度に製作し、ばらつきが少ない
ようにする。 First, FIG. 2 shows an embodiment of a cooled projection tube in which the distance between the projection lens and the phosphor surface can be accurately set within a predetermined range. A pad 18 is provided as a reference. The distance between the pad 18 and the fluorescent surface 10 is adjusted when the fluorescent surface panel 11 and the funnel part 17 are welded together, and the pad 18 is attached to the funnel part 17 so that there is little variation. On the other hand, the holder 20 fixed to the bridge body 19 of the projection television apparatus is formed with a bridge body fixing part 20a, a mounting lug attachment part 20b, and a positioning part 20c brought into contact with the pad 18. The holder 20 is made of aluminum die-casting, for example, and has a positioning portion 20c in contact with the pad 18.
The distance between the surface of the bridge body 19 and the surface of the bridge body fixing part 20a fixed to the bridge body 19 is manufactured with high precision so that there is little variation.
そこで、投射管をホルダー２０に固定するに
は、投射管に取付けられたパツド１８をホルダー
２０の位置決め部２０ｃに当接させ、取付ラグ１
６とホルダー２０の取付ラグ取付部２０ｂ間にス
プリングワツシヤー２１を介在し、ねじ２２で固
定する。前記のようにスプリングワツシヤー２１
を介在させることにより、取付ラグ１６の管軸方
向の位置のばらつきは吸収される。 Therefore, in order to fix the projection tube to the holder 20, the pad 18 attached to the projection tube is brought into contact with the positioning part 20c of the holder 20, and the mounting lug 1
A spring washer 21 is interposed between the mounting lug mounting portion 20b of the holder 20 and the mounting lug mounting portion 20b of the holder 20, and is fixed with a screw 22. Spring washers 21 as mentioned above
By interposing the mounting lug 16, variations in the position of the mounting lug 16 in the tube axis direction are absorbed.
このように、けい光面１０を基準としてフアン
ネル部１７に取付けられたパツド１８を基準とし
て投射管の取付ラグ１６をホルダー２０に固定す
るので、投射レンズとけい光面との距離は所定の
範囲に高精度に設定される。このため、フオーカ
スずれおよびコンバーゼンスずれの少ない良好な
画像が得られる。 In this way, since the mounting lug 16 of the projection tube is fixed to the holder 20 using the fluorescent surface 10 as a reference and the pad 18 attached to the funnel part 17 as a reference, the distance between the projection lens and the fluorescent surface is kept within a predetermined range. Set to high precision. Therefore, a good image with less focus shift and convergence shift can be obtained.
また、第２図の実施例では投射レンズとけい光
面との距離を高精度に設定することについて説明
したが、本発明は他の例えば冷却機構を保持する
手段としても用いることができるなど種々の目的
に対応できることは勿論である。 Furthermore, although the embodiment shown in FIG. 2 describes setting the distance between the projection lens and the fluorescent surface with high precision, the present invention can also be used in various other ways, such as as a means for holding a cooling mechanism. Of course, it can be used for any purpose.
本発明によれば、パツドにより高精度の位置決
めが可能となり、フオーカスおよびコンバーゼン
スずれの少ない良好な画像が得られると共に、さ
らには係止部として使用することも可能で機械的
保持が確実、かつ簡便となるなど優れた効果を呈
するものである。
According to the present invention, the pad enables highly accurate positioning and provides good images with less focus and convergence deviation, and can also be used as a locking part, ensuring reliable and simple mechanical holding. It exhibits excellent effects such as.
第１図は従来の冷却形投射管の要部断面図、第
２図は本発明の冷却形投射管の一実施例を示す要
部断面図である。
１０……けい光面、１１……パネル、１６……
取付ラグ、１７……フアンネル、１８……パツ
ド、２０……ホルダー。
FIG. 1 is a sectional view of a main part of a conventional cooled projection tube, and FIG. 2 is a sectional view of a main part of an embodiment of a cooled projection tube of the present invention. 10...Fluorescent surface, 11...Panel, 16...
Mounting lug, 17... Funnel, 18... Padded, 20... Holder.
Claims (1)
する他端側に電子銃を有し、かつ前記けい光面を
冷却する冷却手段を有する投射形のブラウン管に
おいて、前記バルブのフアンネル部のパネル近傍
外面に該バルブの管軸方向の位置決め基準となる
パツドを有することを特徴とする投射形のブラウ
ン管。1. In a projection-type cathode ray tube having a fluorescent surface at one end of the bulb, an electron gun at the opposite end, and cooling means for cooling the fluorescent surface, A projection type cathode ray tube, characterized in that it has a pad on the outer surface near the panel that serves as a reference for positioning the bulb in the tube axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20580283A JPS60100345A (en) | 1983-11-04 | 1983-11-04 | Reinforcing type cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20580283A JPS60100345A (en) | 1983-11-04 | 1983-11-04 | Reinforcing type cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60100345A JPS60100345A (en) | 1985-06-04 |
| JPH0527209B2 true JPH0527209B2 (en) | 1993-04-20 |
Family
ID=16512920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20580283A Granted JPS60100345A (en) | 1983-11-04 | 1983-11-04 | Reinforcing type cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60100345A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2983813B2 (en) * | 1993-10-13 | 1999-11-29 | 三洋電機株式会社 | CRT device, method of mounting CRT device, and pachinko machine with CRT device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4318122Y1 (en) * | 1965-12-04 | 1968-07-26 | ||
| JPS5056122A (en) * | 1973-09-14 | 1975-05-16 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57195748U (en) * | 1981-06-08 | 1982-12-11 |
-
1983
- 1983-11-04 JP JP20580283A patent/JPS60100345A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4318122Y1 (en) * | 1965-12-04 | 1968-07-26 | ||
| JPS5056122A (en) * | 1973-09-14 | 1975-05-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60100345A (en) | 1985-06-04 |
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