JPH04123750A - Heat sink for deflection coil - Google Patents
Heat sink for deflection coilInfo
- Publication number
- JPH04123750A JPH04123750A JP24267190A JP24267190A JPH04123750A JP H04123750 A JPH04123750 A JP H04123750A JP 24267190 A JP24267190 A JP 24267190A JP 24267190 A JP24267190 A JP 24267190A JP H04123750 A JPH04123750 A JP H04123750A
- Authority
- JP
- Japan
- Prior art keywords
- deflection coil
- heat sink
- heat
- thermal conductivity
- ceramic
- 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.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 8
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 abstract description 2
- 230000020169 heat generation Effects 0.000 abstract description 2
- 239000012212 insulator Substances 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 101100112084 Arabidopsis thaliana CRT2 gene Proteins 0.000 description 1
- 101100235014 Capsicum annuum LCY1 gene Proteins 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
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
Landscapes
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、磁気シールドケース等の空気の対流が著し
く小さい容器内に収容されているＣＲＴにおける偏向コ
イルの放熱を行う偏向コイル用ヒートシンクに間するも
のである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a heat sink for a deflection coil that radiates heat from a deflection coil in a CRT housed in a container such as a magnetic shield case where air convection is extremely small. It is something to do.
［従来の技術］
一般に、電磁偏向形のＣＲＴは解像度を向上させようと
すると走査線本数を増加させることになるので、偏向コ
イルでの発熱が増加する。このため、従来は冷却ファン
によって冷却を行っている。[Prior Art] Generally, in order to improve the resolution of an electromagnetic deflection type CRT, the number of scanning lines must be increased, which increases heat generation in the deflection coil. For this reason, conventionally, cooling has been performed using a cooling fan.
［発明が解決しようとする課題］
しかしながら外部磁界の影響を避けるためにＣＲＴを磁
気シールドする場合は、シールドケース内の空気の対流
が著しく低下し十分な冷却が行われないが、シールドケ
ース内に磁界を発生する冷却ファンを設けることはでき
ない。また、シールドケース外部から冷却ファンで冷却
するため、シールドケースにファンの風を通過させる穴
を設けた場合はシールドケースの磁気シールド効果が低
下してしまうという課題があった。磁気シールドをＣＲ
Ｔモニタ筐体全体で行う場合も同様の課題が生じる。ま
た、防滴等の目的のために密閉構造の筐体にし、かつ無
騒音を要求される場合は冷却ファンを設けることができ
ず、筐体内の空気の対流が著しく低下するため、偏向コ
イルの発熱量が小さい範囲でしか偏向コイルを使用する
ことができなかった。すなわち、偏向コイルに流す電流
値とその周波数を制限せざるを得なかった。[Problems to be Solved by the Invention] However, when magnetically shielding a CRT to avoid the influence of external magnetic fields, air convection within the shield case is significantly reduced and sufficient cooling is not achieved. A cooling fan that generates a magnetic field cannot be provided. Furthermore, since the shield case is cooled from the outside by a cooling fan, there is a problem in that the magnetic shielding effect of the shield case is reduced if holes are provided in the shield case to allow the wind from the fan to pass through. CR magnetic shield
A similar problem occurs when the entire T-monitor housing is used. In addition, if the housing has a sealed structure for drip-proofing purposes and noise-free operation is required, a cooling fan cannot be installed, and air convection within the housing will be significantly reduced. Deflection coils could only be used within a range where the amount of heat generated was small. In other words, it was necessary to limit the current value and frequency that flows through the deflection coil.
Ｃ課題を解決するための手段Ｊ
このような課題を解決するためにこの発明は、熱伝導性
の良い接着剤を介して偏向コイルに接着された熱伝導度
の良いセラミック製ヒートシンクにより偏向コイルに発
生した熱を放熱するものである。C Means for Solving the Problems J In order to solve these problems, the present invention provides a method for attaching the deflection coil to the deflection coil using a ceramic heat sink with good thermal conductivity, which is bonded to the deflection coil via an adhesive with good thermal conductivity. It radiates the generated heat.
ＣｆＦ＝ｍＥ
偏向コイルで発生した熱が接着剤を介してセラミックス
製ヒートシンクに伝えられ、そのヒートシンクの熱伝導
によって外部に放散される。CfF=mE The heat generated by the deflection coil is transmitted to the ceramic heat sink via the adhesive, and is dissipated to the outside by the heat conduction of the heat sink.
［実施例］ 図はこの発明の一実施例を示す断面図である。[Example] The figure is a sectional view showing an embodiment of the present invention.
図においてＣＲＴＬの青面倒は画面に表示された画像の
回転、移動および歪みを発生させる外部磁界の影響を受
けないようにするため、磁気シールド効果を有するシー
ルドケース２によって覆われている。３は屠肉コイル、
４はその偏向コイルで発生した熱を伝達するセラミック
ス製のヒートシンクであって、ヒートシンク４の偏向コ
イル３に接触する部分はその偏向コイルの外周とできる
だけ同一形状、同一傾斜になるように形成され、極力接
触面積が広くなるようにしている。また、セラミックス
は例えば窒化アルミニウムのように熱伝導度の良いもの
を用いている。In the figure, the blue side of the CRTL is covered by a shield case 2 having a magnetic shielding effect in order to prevent it from being affected by external magnetic fields that cause rotation, movement, and distortion of images displayed on the screen. 3 is a carcass coil,
Reference numeral 4 denotes a ceramic heat sink that transmits the heat generated by the deflection coil, and the portion of the heat sink 4 that contacts the deflection coil 3 is formed to have the same shape and inclination as possible to the outer circumference of the deflection coil. We try to make the contact area as wide as possible. Further, as the ceramic, a material having good thermal conductivity, such as aluminum nitride, is used.
偏向コイル３とヒートシンク４との間は例えば熱伝導性
シリコン接着剤等の適度の柔軟性を有し、熱伝導性の良
好な接着剤５で接着されている。そしてヒートシンク４
は非磁性体金属６を介してシールドケース２に取り付け
られている。The deflection coil 3 and the heat sink 4 are bonded together with an adhesive 5 having appropriate flexibility and good thermal conductivity, such as a thermally conductive silicone adhesive. and heat sink 4
is attached to the shield case 2 via a non-magnetic metal 6.
このように構成された装置においてヒートシンク４はセ
ラミックすなわち非磁性体でかつ絶縁体であるため、ヒ
ートシンク４が偏向コイルで発生した磁界（ｉｔ向磁界
〉を乱すことがなく、また偏向磁界によって渦電流が流
れることもないので、自己発熱することもない、また、
熱伝導性の良いセラミックを用いているため、偏向コイ
ル３で発生した熱を伝え易い、さらに偏向コイル３とヒ
ートシンク４とは熱伝導性の良い接着剤５によって接着
されているので、その接着剤は偏向コイルの凹部にも十
分入り込み、接着剤は偏向コイル３の殆ど全ての外周に
密接することになる。したがって偏向コイル３で発生し
、その外周まで伝えられた熱は殆どヒートシンク４に伝
えられる。また偏向コイル３の外周とヒートシンク４の
内壁の形状および傾斜はできるだけ同一となるように形
成されているので、偏向コイルからヒートシンク４まで
の熱抵抗は非常に小さくなる。In the device configured in this way, the heat sink 4 is made of ceramic, that is, a non-magnetic material and an insulator, so the heat sink 4 does not disturb the magnetic field generated by the deflection coil (it direction magnetic field), and the deflection magnetic field does not cause eddy currents. Since there is no flow, there is no self-heating, and
Since ceramic with good thermal conductivity is used, it is easy to transfer the heat generated by the deflection coil 3.Furthermore, since the deflection coil 3 and the heat sink 4 are bonded with an adhesive 5 with good thermal conductivity, the adhesive The adhesive will fully penetrate into the recessed portion of the deflection coil, and the adhesive will be in close contact with almost the entire outer periphery of the deflection coil 3. Therefore, most of the heat generated in the deflection coil 3 and transmitted to its outer periphery is transmitted to the heat sink 4. Further, since the outer periphery of the deflection coil 3 and the inner wall of the heat sink 4 are formed to have the same shape and inclination as possible, the thermal resistance from the deflection coil to the heat sink 4 becomes extremely small.
ヒートシンク４はアルミ等の非磁性体金属６で押圧され
て固定され、その非磁性体金属６はシールドケース２に
取り付けられている。また、ヒートシンク４と非磁性体
金属６の接触面はできるだけ密着するように加工されて
いる。このように非磁性体金属でヒートシンクを押圧し
て固定することによってセラミックス製のヒートシンク
の重量がＣＲＴのネックにかかるのを防いで取り付は上
の強度を大きくしており、しかも磁界を乱さないように
している。また、非磁性体金属は熱伝導度が良好である
ばかりでなく、セラミックスに比べて機械的強度が強く
しかも加工性にも優れているので、シールドケースへの
取り付けが容易である。The heat sink 4 is pressed and fixed by a non-magnetic metal 6 such as aluminum, and the non-magnetic metal 6 is attached to the shield case 2. Further, the contact surfaces between the heat sink 4 and the non-magnetic metal 6 are processed so as to be in close contact with each other as much as possible. In this way, by pressing and fixing the heat sink with non-magnetic metal, the weight of the ceramic heat sink is prevented from being applied to the neck of the CRT, increasing the strength of the mounting, and it does not disturb the magnetic field. That's what I do. In addition, non-magnetic metals not only have good thermal conductivity, but also have stronger mechanical strength and better workability than ceramics, so they can be easily attached to the shield case.
ヒートシンク４は適度な柔軟性を有する接着剤で偏向コ
イルに接着されているので、外部からの振動や衝撃が加
えられても、綾衡材の役目を果たし振！ｆｒ撃を十分吸
収でき、ＣＲＴに無理な力がかかることがない。なお、
ヒートシンク４、非磁性体金属６およびシールドケース
２の接触面に、例えばシリコン・パウンド等の熱伝導性
コンパウンドを塗布することにより、放熱効率を一層向
上させることができる。Since the heat sink 4 is bonded to the deflection coil with an adhesive having appropriate flexibility, it acts as a balancing material and prevents vibration even if external vibrations or shocks are applied. It can sufficiently absorb FR shock, and no excessive force is applied to the CRT. In addition,
By applying a thermally conductive compound such as silicone compound to the contact surfaces of the heat sink 4, non-magnetic metal 6, and shield case 2, heat dissipation efficiency can be further improved.
［発明の効果］
以上説明したようにこの発明は、熱伝導性の良いセラミ
ック製のヒートシンクと非磁性体金属によって偏向コイ
ルで発生する熱を外部に放散するようにしたので、密閉
空間を有し、冷却用のファンを使用できない環境でも効
率良く放熱を行うことができるという効果を有する。[Effects of the Invention] As explained above, the present invention uses a ceramic heat sink with good thermal conductivity and a non-magnetic metal to dissipate the heat generated in the deflection coil to the outside, so that it has a closed space. This has the effect that heat can be efficiently dissipated even in an environment where a cooling fan cannot be used.
図はこの発明の一実施例を示す断面図である。
１・・・・ＣＲＴ、２−・・・シールドケース、・・ヒ
ートシンク、
・・非磁性体金属。
３・・・・偏向コイル、４・
５・・・・接着剤、６・The figure is a sectional view showing an embodiment of the present invention. 1...CRT, 2-...shield case,...heat sink,...non-magnetic metal. 3... Deflection coil, 4. 5... Adhesive, 6.
Claims (1)
容器内に収容されているＣＲＴにおける偏向コイルの放
熱を行う偏向コイル用ヒートシンクにおいて、 熱伝導性の良い接着剤を介して偏向コイルに接着されか
つ熱伝導度の良いセラミックスを用いてヒートシンクを
構成したことを特徴とする偏向コイル用ヒートシンク。[Scope of Claims] A heat sink for a deflection coil that radiates heat from a deflection coil in a CRT in which at least a portion of the deflection coil is housed in a container with extremely low air convection, wherein the deflection coil is bonded to the deflection coil via an adhesive having good thermal conductivity. A heat sink for a deflection coil, characterized in that the heat sink is made of ceramics that are bonded to a substrate and have good thermal conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2242671A JPH0782818B2 (en) | 1990-09-14 | 1990-09-14 | Heat sink for deflection coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2242671A JPH0782818B2 (en) | 1990-09-14 | 1990-09-14 | Heat sink for deflection coil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04123750A true JPH04123750A (en) | 1992-04-23 |
| JPH0782818B2 JPH0782818B2 (en) | 1995-09-06 |
Family
ID=17092506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2242671A Expired - Fee Related JPH0782818B2 (en) | 1990-09-14 | 1990-09-14 | Heat sink for deflection coil |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0782818B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000005743A3 (en) * | 1998-07-21 | 2000-04-27 | Koninkl Philips Electronics Nv | Cathode ray tube having a deflection unit provided with a fan |
| EP0640857B1 (en) * | 1993-08-25 | 2000-10-11 | Sumitomo Electric Industries, Ltd. | Optical switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810358U (en) * | 1981-07-14 | 1983-01-22 | 中央無線株式会社 | Yoke assembly for image pickup tube |
| JPS6362138A (en) * | 1986-08-11 | 1988-03-18 | イー―システムズ，インコーポレイテッド | Deflection yoke for oscilloscope with heat radiation mechanism |
| JPH0218257U (en) * | 1988-07-19 | 1990-02-06 |
-
1990
- 1990-09-14 JP JP2242671A patent/JPH0782818B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810358U (en) * | 1981-07-14 | 1983-01-22 | 中央無線株式会社 | Yoke assembly for image pickup tube |
| JPS6362138A (en) * | 1986-08-11 | 1988-03-18 | イー―システムズ，インコーポレイテッド | Deflection yoke for oscilloscope with heat radiation mechanism |
| JPH0218257U (en) * | 1988-07-19 | 1990-02-06 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0640857B1 (en) * | 1993-08-25 | 2000-10-11 | Sumitomo Electric Industries, Ltd. | Optical switch |
| WO2000005743A3 (en) * | 1998-07-21 | 2000-04-27 | Koninkl Philips Electronics Nv | Cathode ray tube having a deflection unit provided with a fan |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0782818B2 (en) | 1995-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6642717B2 (en) | Magnetic resonance apparatus having a mechanically damped gradient coil system | |
| KR100370444B1 (en) | Mri magnetic field generator | |
| JP5025164B2 (en) | Equipment for heat shielding superconducting magnets | |
| JP4924949B2 (en) | Reactor | |
| CA2301270A1 (en) | Vibration exciter | |
| JP3985987B2 (en) | Speaker device and cooling device for speaker device | |
| JP2010027733A (en) | Cooling structure of reactor | |
| JPH04123750A (en) | Heat sink for deflection coil | |
| JPH0652649B2 (en) | Deflection yoke | |
| JPH05215183A (en) | Vibrationproofing support device | |
| JP2000175295A (en) | Speaker system | |
| US6424085B1 (en) | Cathode ray tube having a deflection unit | |
| JP3418862B2 (en) | Radiation shield plate | |
| JPH03155028A (en) | Deflection yoke | |
| JP2003197359A (en) | Induction heating cooker | |
| JPS588536B2 (en) | magnetron | |
| KR920002591Y1 (en) | Anti-heat type deflection yoke | |
| JPH04246330A (en) | Magnetic resonance imaging device | |
| JPH0574094U (en) | Speaker unit | |
| KR940004343Y1 (en) | Indirectly heated structure of speaker | |
| JPH06243798A (en) | Deflecting yoke | |
| KR100292459B1 (en) | Heat radiation apparatus of deflection yoke in crt | |
| JP3209583B2 (en) | Magnetic resonance imaging equipment | |
| JP3262176B2 (en) | Superconducting magnet device | |
| JPH11233047A (en) | Deflecting yoke and cathode-ray tube type display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070906 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080906 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080906 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090906 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090906 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100906 Year of fee payment: 15 |
|
| LAPS | Cancellation because of no payment of annual fees |