JPH03155028A - Deflection yoke - Google Patents
Deflection yokeInfo
- Publication number
- JPH03155028A JPH03155028A JP29464889A JP29464889A JPH03155028A JP H03155028 A JPH03155028 A JP H03155028A JP 29464889 A JP29464889 A JP 29464889A JP 29464889 A JP29464889 A JP 29464889A JP H03155028 A JPH03155028 A JP H03155028A
- Authority
- JP
- Japan
- Prior art keywords
- deflection coil
- deflection
- horizontal deflection
- deflection yoke
- radiation fin
- 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
- 230000005855 radiation Effects 0.000 claims abstract description 20
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 8
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 4
- 229920002379 silicone rubber Polymers 0.000 abstract description 6
- 239000004945 silicone rubber Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 239000003570 air Substances 0.000 abstract 1
- 239000012080 ambient air Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、偏向ヨーク、特に、受像管に装着される偏
向ヨークに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deflection yoke, and particularly to a deflection yoke mounted on a picture tube.
（従来の技術〕
従来、この種の装置としては、第５図ないし第８図に示
したものが知られている。図において、１は受像管Ｔに
巻着されたサドル−トロイダル形の偏向ヨークであり、
２はサドル形に巻線された水平偏向コイル、４はこの水
平偏向コイル２の外側に、セパレータ３を介して設けら
れた高透磁性のコア、５はトロイダル形に巻線された垂
直偏向コイルである。(Prior Art) Conventionally, as this type of device, the ones shown in Figs. 5 to 8 are known. York,
2 is a horizontal deflection coil wound in a saddle shape, 4 is a highly permeable core provided outside the horizontal deflection coil 2 with a separator 3 in between, and 5 is a vertical deflection coil wound in a toroidal shape. It is.
前記偏向ヨーク１は、水平偏向コイル２と、セパレータ
３と、高透磁コア４と、垂直偏向コイル５とから構成さ
れていた。The deflection yoke 1 was composed of a horizontal deflection coil 2, a separator 3, a high magnetic permeability core 4, and a vertical deflection coil 5.
首記構成において、水平および垂直偏向コイル２．５に
走査のためののこぎり波偏向電流を流すと、偏向磁界が
生じる。これと同時にこれら両コイル２，５には交流損
失（銅損、うず電流積および表皮損失）か発生し、他方
、コア４内には鉄損（ヒステリシス損、渦電流損）が発
生する。これらの損失は、コイル２．５に流れる偏向電
流の周波数が高くなり、または偏向電流が多くなるにし
たがって大となる。ところで、近年、画像の解像度を上
げるために水平偏向コイル２側の周波数を高くする方法
か採用されるようになり、また、大画面を得るために広
角偏向が要求され、偏向電流を多くなるようになった。In the above configuration, when a sawtooth wave deflection current for scanning is passed through the horizontal and vertical deflection coils 2.5, a deflection magnetic field is generated. At the same time, alternating current losses (copper loss, eddy current product, and skin loss) occur in both coils 2 and 5, and iron losses (hysteresis loss, eddy current loss) occur in the core 4. These losses increase as the frequency of the deflection current flowing through the coil 2.5 increases or as the deflection current increases. By the way, in recent years, a method has been adopted in which the frequency of the horizontal deflection coil 2 is increased to increase the resolution of the image, and wide-angle deflection is required to obtain a large screen, and the deflection current has to be increased. Became.
このため、偏向ヨーク１の各部の温度上昇が一層大とな
って、コア４の特性の劣化や、セパレータ３の変形およ
び偏向ヨーク全体の変形に伴うコンバーゼンス変化をひ
き起こしたり、絶縁物の熱劣化による偏向ヨーク１の耐
久性の低下をきたす等の問題が生じるようになフた。Therefore, the temperature rise in each part of the deflection yoke 1 becomes even greater, causing deterioration of the characteristics of the core 4, convergence changes due to deformation of the separator 3 and deformation of the entire deflection yoke, and thermal deterioration of the insulator. This may cause problems such as a decrease in the durability of the deflection yoke 1.
〔発明が解決しようとする課題）
しかしながら、従来の偏向ヨークにおいては、このよう
に高解像度又は、大偏向角を得ることを目的とした、水
平偏向コイル２の高周波化、大電流化に伴なって生じる
偏向ヨーク１の各部の温度上昇を抑えるため、コイル断
面積やコア体積の増大化あるいけ、冷却用ファンの設置
等の対策を講じているが、特に１３０ｋＨｚのような高
周波で走査するようなものや、１１０°偏向角等のもの
においては、充分な冷却効果を得ることができないとい
う問題があった。[Problems to be Solved by the Invention] However, in the conventional deflection yoke, as the horizontal deflection coil 2 is made to operate at a higher frequency and a larger current in order to obtain high resolution or a large deflection angle, In order to suppress the temperature rise in various parts of the deflection yoke 1 that occurs due to this, measures have been taken such as increasing the coil cross-sectional area and core volume, and installing cooling fans. There was a problem in that a sufficient cooling effect could not be obtained with a deflection angle of 110° or a deflection angle of 110°.
この考案の偏向コイルは、このような問題を解決するた
めになされたもので、高周波走査時や、偏向電流を大き
くする必要のあるときでも、偏向ヨークの温度上昇を抑
制てきる偏向ヨーク装置を得ることを目的としている。The deflection coil of this invention was created to solve these problems, and it is a deflection yoke device that suppresses the temperature rise of the deflection yoke even during high frequency scanning or when it is necessary to increase the deflection current. The purpose is to obtain.
このため、この発明に係る偏向ヨークは、水平偏向コイ
ルに、高熱伝導率と高電気抵抗を有するアルミナ、チッ
化アルミ等て製造した放熱フィンを取り付けたものであ
る。Therefore, in the deflection yoke according to the present invention, a radiation fin made of alumina, aluminum nitride, or the like having high thermal conductivity and high electrical resistance is attached to the horizontal deflection coil.
この発明における偏向ヨークは水平偏向コイルにアルミ
ナ、チッ化アルミ等で製造した高熱伝導率、高電気抵抗
を有する放熱フィンを取り付けたことにより、水γ偏向
コイルに発生した熱を効率よく空気中に放出することで
、水平偏向コイルの温度上昇を低減させ、また偏向ヨー
クのコアや垂直偏向コイル側に伝わる熱を減少させるこ
とてコア及垂直コイルの温度上昇も低減させることがで
きるように（動く。The deflection yoke of this invention has heat dissipation fins made of alumina, aluminum nitride, etc. with high thermal conductivity and high electrical resistance attached to the horizontal deflection coil, thereby efficiently transferring the heat generated in the water gamma deflection coil to the air. By releasing the heat, the temperature rise of the horizontal deflection coil can be reduced, and the heat transferred to the core of the deflection yoke and the vertical deflection coil side can be reduced, thereby reducing the temperature rise of the core and vertical coil. .
以下に、この発明の一実施例に係る偏向ヨークについて
図面−に基づいて説明する。A deflection yoke according to an embodiment of the present invention will be described below with reference to the drawings.
第１図はこの発明の一実施例の偏向ヨークを示す側断面
図、第２図は同正面図である。FIG. 1 is a side sectional view showing a deflection yoke according to an embodiment of the present invention, and FIG. 2 is a front view thereof.
面出部第５図〜第８図従来例と同一部分または相当部分
は同一符号を用いて説明の重視をさける。Extruded portions in FIGS. 5 to 8. Portions that are the same as or equivalent to those of the conventional example are designated by the same reference numerals to avoid emphasis on explanation.
図において、６は放熱フィン、７はシリコンゴムであり
、このシリコンゴム７で放熱フィン６とセパレータ３と
を接合するようになっている。In the figure, 6 is a heat radiation fin, and 7 is silicone rubber, and the heat radiation fin 6 and the separator 3 are joined by this silicone rubber 7.
受像管Ｔに装着される巻線した偏向ヨーク１は、サドル
形に＠線された水平偏向ヨーク２と、この水平偏向コイ
ル２の外側に、セパレータ３を解して設けた高速磁性の
コア４と、トロイダル形に巻線された垂直偏向コイル５
とから構成されている。The wire-wound deflection yoke 1 attached to the picture tube T includes a saddle-shaped horizontal deflection yoke 2 and a high-speed magnetic core 4 provided outside the horizontal deflection coil 2 through a separator 3. and a vertical deflection coil 5 wound in a toroidal shape.
It is composed of.
つぎに動作について説明する。まず、水平偏向コイル２
に放熱フィン６を接触させることによフて水平偏向コイ
ル２と放熱フィン６とを熱的に接合させ、水平偏向コイ
ル２で生じた熱が放熱フィン６に伝わるようにする。シ
リコンゴム７で、放熱フィン６とセパレータ３とを接合
することにより、放熱フィン６をセパレータ３に固定す
る。Next, the operation will be explained. First, horizontal deflection coil 2
By bringing the radiation fins 6 into contact with the horizontal deflection coil 2 and the radiation fins 6, the horizontal deflection coil 2 and the radiation fins 6 are thermally joined, and the heat generated by the horizontal deflection coil 2 is transmitted to the radiation fins 6. The heat dissipation fins 6 and the separator 3 are bonded together using silicone rubber 7, thereby fixing the heat dissipation fins 6 to the separator 3.
偏向ヨーク１の動作時の温度については、水平偏向コイ
ル２で生じた銅損、うず電流積および表皮損失によって
水平偏向コイル２の温度はＦ昇する。これに対し、放熱
フィン６は、電気抵抗が大きいために、高周波の下でも
発熱することなく、また、偏向ヨーク１の周囲に拡かフ
ているので、周囲の空気にふれているため低温状態であ
る。したがって、水平コイル２の温度と周囲温度とのｌ
によって、水平偏向コイル２て生した熱は放熱フィン６
を伝わって空気中に放出されるため、水゛Ｐ−偏向コイ
ル２の温度は低くなる。水平偏向コイル２の温度が低下
すれば、水平偏向コイル２は偏向ヨーク１各部で最も高
温であるため、水平偏向コイル２と垂直偏向コイル５な
らびにコア４との温度差が小さくなり、このため、水平
−偏向コイル２から垂直偏向コイル５および、コア４に
伝わる熱が減少し、垂直偏向コイル５およびにコア４の
温度か低下する。この結果、偏向周波数を上げて画像の
解像度を向上させることかてきる、偏向電流を大きくす
ることかてさ、広角度偏向かできる。Regarding the temperature of the deflection yoke 1 during operation, the temperature of the horizontal deflection coil 2 increases by F due to copper loss, eddy current product, and skin loss generated in the horizontal deflection coil 2. On the other hand, the heat radiation fins 6 have a large electrical resistance, so they do not generate heat even under high frequencies, and since they are spread around the deflection yoke 1, they are in contact with the surrounding air, so they are kept at a low temperature. It is. Therefore, l between the temperature of the horizontal coil 2 and the ambient temperature is
As a result, the heat generated by the horizontal deflection coil 2 is transferred to the radiation fin 6.
The temperature of the water P-deflection coil 2 decreases because the water is discharged into the air. If the temperature of the horizontal deflection coil 2 decreases, the temperature difference between the horizontal deflection coil 2, the vertical deflection coil 5, and the core 4 becomes smaller, because the horizontal deflection coil 2 is the highest temperature among the parts of the deflection yoke 1. The heat transferred from the horizontal deflection coil 2 to the vertical deflection coil 5 and core 4 decreases, and the temperature of the vertical deflection coil 5 and core 4 decreases. As a result, the resolution of the image can be improved by increasing the deflection frequency, the deflection current can be increased, and a wide angle of deflection can be achieved.
この発明の一実施例によりば、受像管Ｔに装着される水
平偏向コイル２に熱伝導率と電気抵抗が大きいアルミナ
、チッ化アルミナ等で製造した放熱フィン６を取り付け
たことにより、偏向ヨーク１各部における温度上昇を抑
制し、高周波走査時や、第本校電流使用時でも適正に動
作させることができ、信頼性がよい偏向ヨーク１が得ら
れるという効果がある。According to one embodiment of the present invention, the horizontal deflection coil 2 mounted on the picture tube T is provided with a radiation fin 6 made of alumina, alumina nitride, or the like having high thermal conductivity and electrical resistance, so that the deflection yoke 1 This has the effect of suppressing the temperature rise in each part, allowing proper operation even during high frequency scanning or when using the primary current, and providing a highly reliable deflection yoke 1.
前記実施例に示した放熱フィンは、アルミナ。The radiation fins shown in the above embodiments are made of alumina.
チッ化、アルミナ等のセラミックスに限定することなく
、高熱伝ｉｌＸ率であり、かつ、電気抵抗が大きいもの
であればよい。The material is not limited to ceramics such as nitride or alumina, but any material having a high thermal conductivity and high electrical resistance may be used.
また、前記実施例では、サドル−トロイダル形の偏向ヨ
ーク１について説明したが、これに限定されず、トロイ
ダル−トロダル形あるはサドル−サドル形であっても同
様の効果を奏する。Further, in the above embodiment, the deflection yoke 1 is of the saddle-toroidal type, but the deflection yoke 1 is not limited to this, and the same effect can be obtained even if the deflection yoke 1 is of the toroidal-toroidal type or the saddle-saddle type.
さらに、前記実施例では、放熱フィン６を、シリコンゴ
ム７でセパレータ３に固定した場合について説明したが
、第３図及び第４図に示したように、放熱フィン６に切
り欠き８を入れ、切り欠き８のところで放熱フィン６と
セパレータ３とをプラスチックのグリ１９で止めるよう
にしてもよい
（発明の効果）
以上に、説明してきたように、この発明によれば、水平
偏向コイルに直接放熱フィンを取り付けることにより、
偏向ヨーク各部の温度上昇を抑制し、高周波走査時や大
偏向電流使用時でも、適正に動作させることができる、
信頼性のよい偏向ヨークを提供できるという効果を奏す
る。Furthermore, in the embodiment described above, the case where the heat dissipation fin 6 was fixed to the separator 3 with the silicone rubber 7 was explained, but as shown in FIGS. The radiation fins 6 and the separator 3 may be fixed at the notches 8 with a plastic grille 19 (effects of the invention) As described above, according to the present invention, the heat radiation is directly applied to the horizontal deflection coil. By attaching fins,
It suppresses the temperature rise of each part of the deflection yoke, allowing proper operation even during high frequency scanning or when using large deflection currents.
This has the effect of providing a highly reliable deflection yoke.
第１図はこの発明の一実施例による偏向ヨークを示す側
断面図、第２図は同正面図、第３図はこの発明の他の実
施例による偏向ヨークを示す側断面図、第４図は同正面
図、第５図は従来の偏向ヨークを示す側断面図、第６図
は同断面図、第７図は同正面図、第８図は同偏向ヨーク
を受像管に着装した状態を示す説明図である。
１は偏向ヨーク、２は水平偏向コイル、３はセパレータ
、４はコア、５は垂直偏向コイル、６は放熱フィン、７
はシリコンゴム、Ｔは受像管である。
なお、各図中、同一符号は同一部分または相当部分を示
す。FIG. 1 is a side sectional view showing a deflection yoke according to one embodiment of the invention, FIG. 2 is a front view thereof, FIG. 3 is a side sectional view showing a deflection yoke according to another embodiment of the invention, and FIG. 5 is a side sectional view showing the conventional deflection yoke, FIG. 6 is a sectional view of the same, FIG. 7 is a front view of the same, and FIG. 8 is a state in which the same deflection yoke is attached to a picture tube. FIG. 1 is a deflection yoke, 2 is a horizontal deflection coil, 3 is a separator, 4 is a core, 5 is a vertical deflection coil, 6 is a radiation fin, 7
is silicone rubber, and T is a picture tube. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
ルに、熱伝導率と電気抵抗が大きいアルミナ、チッ化ア
ルミ等で製造した放熱フィンを取り付けたことを特徴と
する偏向ヨーク。A deflection yoke is characterized in that a radiation fin made of alumina, aluminum nitride, etc., which has high thermal conductivity and electrical resistance, is attached to a horizontal deflection coil wound around a deflection yoke that is attached to a picture tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29464889A JPH03155028A (en) | 1989-11-13 | 1989-11-13 | Deflection yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29464889A JPH03155028A (en) | 1989-11-13 | 1989-11-13 | Deflection yoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03155028A true JPH03155028A (en) | 1991-07-03 |
Family
ID=17810486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29464889A Pending JPH03155028A (en) | 1989-11-13 | 1989-11-13 | Deflection yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03155028A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000016369A1 (en) * | 1998-09-11 | 2000-03-23 | Koninklijke Philips Electronics N.V. | Cathode ray tube comprising a yoke ring provided with a cooling fin |
-
1989
- 1989-11-13 JP JP29464889A patent/JPH03155028A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000016369A1 (en) * | 1998-09-11 | 2000-03-23 | Koninklijke Philips Electronics N.V. | Cathode ray tube comprising a yoke ring provided with a cooling fin |
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