JP2002223089A - Electric equipment and discharge lamp lighting device - Google Patents
Electric equipment and discharge lamp lighting deviceInfo
- Publication number
- JP2002223089A JP2002223089A JP2001018852A JP2001018852A JP2002223089A JP 2002223089 A JP2002223089 A JP 2002223089A JP 2001018852 A JP2001018852 A JP 2001018852A JP 2001018852 A JP2001018852 A JP 2001018852A JP 2002223089 A JP2002223089 A JP 2002223089A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- electric component
- electric
- plate
- radiating plate
- 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.)
- Withdrawn
Links
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気部品の放熱構
造を備えた電気機器および放電灯点灯装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric apparatus having a heat radiating structure for electric parts and a discharge lamp lighting device.
【０００２】[0002]
【従来の技術】従来、例えば、放電灯点灯装置において
は、金属ケース内に、点灯回路部品を構成する電気部品
を実装した基板を収納しており、この点灯回路部品のう
ちトランジスタなどの発熱量の多い電気部品つまり発熱
部品については発生した熱を金属ケースに伝達して放熱
する放熱構造が採られている。2. Description of the Related Art Conventionally, for example, in a discharge lamp lighting device, a substrate on which electric components constituting a lighting circuit component are mounted is housed in a metal case, and a heating value of a transistor or the like in the lighting circuit component. For a large number of electric components, that is, heat-generating components, a heat radiating structure for transmitting generated heat to a metal case and radiating heat is adopted.
【０００３】放熱構造としては、例えば、特開平８−１
６７３１８号公報に記載されているように、金属ケース
の側板を加工して基板上に実装される発熱部品の側面に
接触させたり、金属ケースの側板に設けた板ばねで発熱
部品を金属ケースの側板に押し付けることにより、発熱
部品を金属ケースに直接的に接合させて、発熱部品の熱
を金属ケースに放熱している。As a heat radiation structure, for example, Japanese Patent Application Laid-Open No. Hei 8-1
As described in Japanese Patent No. 67318, a side plate of a metal case is machined to be brought into contact with a side surface of a heat generating component mounted on a board, or a heat generating component is formed on a side plate of the metal case by a plate spring. By pressing against the side plate, the heat-generating component is directly joined to the metal case, and the heat of the heat-generating component is radiated to the metal case.
【０００４】また、放熱板を用い、この放熱板上に電気
部品の一面を接合させて配置し、この放熱板の端部を金
属ケースの側板に接合させることにより、発熱部品の熱
を放熱板を通じて金属ケースに放熱している。[0004] Further, by using a heat sink, one surface of the electric component is joined to and disposed on the heat sink, and the end of the heat sink is joined to the side plate of the metal case, so that the heat of the heat generating component is dissipated. Heat is dissipated to the metal case through.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、発熱部
品を金属ケースに直接的に接合させる場合で、金属ケー
スの側板を加工して基板上に実装される発熱部品の側面
に接触させる構造では、基板を金属ケースに組み込むの
に困難を要すとともに、発熱部品の側面と金属ケースと
を面で密着させることが困難で、十分な放熱性が得られ
ず、また、金属ケースの側板に設けた板ばねで発熱部品
を金属ケースの側板に押し付ける構造では、基板を金属
ケースに組み込むのに困難を要すとともに、発熱部品の
一面しか金属ケースに接合しないので、十分な放熱性が
得られない問題がある。However, in the case where the heat-generating component is directly joined to the metal case, the structure in which the side plate of the metal case is processed and brought into contact with the side surface of the heat-generating component mounted on the substrate is not used. In addition, it is difficult to incorporate the metal case into the metal case, it is difficult to make the side of the heat-generating component and the metal case closely adhere to each other, and sufficient heat dissipation cannot be obtained. In the structure in which the heat-generating component is pressed against the side plate of the metal case with a spring, it is difficult to incorporate the board into the metal case, and since only one surface of the heat-generating component is joined to the metal case, sufficient heat dissipation cannot be obtained. is there.
【０００６】また、放熱板を用いた場合には、放熱板に
対して発熱部品の一面しか接触しないので、発熱部品の
発熱を放熱板に十分に伝達することができず、十分な放
熱性が得られない問題がある。When a heat radiating plate is used, only one surface of the heat generating component contacts the heat radiating plate, so that the heat generated by the heat generating component cannot be sufficiently transmitted to the heat radiating plate, and sufficient heat radiating property cannot be obtained. There is a problem that cannot be obtained.
【０００７】このように従来の放熱構造では、発熱部品
の十分な放熱性が得られず、発熱部品が過熱して信頼性
が低下する問題がある。As described above, in the conventional heat dissipation structure, there is a problem that sufficient heat dissipation of the heat-generating component cannot be obtained, and the heat-generating component is overheated, thereby lowering reliability.
【０００８】本発明は、このような点に鑑みなされたも
ので、電気部品からの放熱性を向上させ、電気部品の信
頼性を向上できる電気機器および放電灯点灯装置を提供
することを目的とする。The present invention has been made in view of the above points, and an object of the present invention is to provide an electric device and a discharge lamp lighting device that can improve the heat radiation from electric components and improve the reliability of the electric components. I do.
【０００９】[0009]
【課題を解決するための手段】請求項１記載の電気機器
は、電気部品の一面側に熱伝達可能に配置される第１の
放熱板と；電気部品の一面と相反する他面側に熱伝達可
能に配置され、第１の放熱板との間で電気部品を挟み込
むとともに第１の放熱板に接合される第２の放熱板と；
電気部品が配置されるとともに第１の放熱板および第２
の放熱板の少なくとも一方が接合される金属ケースと；
を具備しているものである。According to a first aspect of the present invention, there is provided an electric device comprising: a first heat sink disposed so as to be able to transfer heat to one surface of an electric component; and a heat sink disposed on the other surface opposite to one surface of the electric component. A second heat dissipating plate disposed so as to be able to transmit and sandwiching the electric component between the first heat sink and the first heat sink;
The first heat sink and the second
A metal case to which at least one of the heat sinks is joined;
Is provided.
【００１０】そして、電気部品の一面側および他面側に
熱伝達可能に配置される第１の放熱板と第２の放熱板と
の間で電気部品を挟み込むことにより、熱伝達のための
有効面積を広くとれ、電気部品の熱が第１の放熱板およ
び第２の放熱板に有効に伝達されて、金属ケースに放熱
されるので、電気部品からの放熱性が向上し、電気部品
の信頼性が向上する。[0010] The electric component is sandwiched between the first heat radiating plate and the second heat radiating plate which are arranged so that heat can be transferred to one surface side and the other surface side of the electric component, so that an effective heat transfer is achieved. With a large area, the heat of the electric component is effectively transmitted to the first heat radiating plate and the second heat radiating plate and is radiated to the metal case, so that the heat radiation from the electric component is improved and the reliability of the electric component is improved. The performance is improved.
【００１１】請求項２記載の電気機器は、請求項１記載
の電気機器において、電気部品と第１の放熱板および第
２の放熱板の少なくとも一方との間に熱伝導シートが介
在されるものである。According to a second aspect of the present invention, there is provided the electrical device according to the first aspect, wherein a heat conductive sheet is interposed between the electrical component and at least one of the first radiator plate and the second radiator plate. It is.
【００１２】そして、電気部品と第１の放熱板および第
２の放熱板の少なくとも一方との間に熱伝導シートを介
在したので、電気部品と放熱板との接合面の平滑度のば
らつきによって接合面にギャップが生じるような場合で
も、電気部品と放熱板との密着性が向上し、電気部品の
熱が放熱板に有効に伝達される。Since the heat conductive sheet is interposed between the electric component and at least one of the first heat radiating plate and the second heat radiating plate, the electric component and the heat radiating plate are joined due to unevenness in the smoothness of the joint surface. Even when a gap is formed on the surface, the adhesion between the electric component and the heat sink is improved, and the heat of the electric component is effectively transmitted to the heat sink.
【００１３】請求項３記載の電気機器は、請求項１また
は２記載の電気機器において、電気部品の一面および他
面の略全面に第１の放熱板および第２の放熱板が配置さ
れるものである。According to a third aspect of the present invention, there is provided the electrical device according to the first or second aspect, wherein the first heat radiating plate and the second heat radiating plate are disposed on substantially one surface and the other surface of the electric component. It is.
【００１４】そして、電気部品の一面および他面の略全
面に第１の放熱板および第２の放熱板を配置したので、
熱伝達のための有効面積を広くとれ、電気部品の熱が第
１の放熱板および第２の放熱板に有効に伝達される。Since the first heat radiating plate and the second heat radiating plate are arranged on substantially the entire surface of one side and the other side of the electric component,
An effective area for heat transfer can be widened, and the heat of the electric component can be effectively transferred to the first radiator plate and the second radiator plate.
【００１５】請求項４記載の電気機器は、請求項１ない
し３いずれか一記載の電気機器において、第１の放熱板
および第２の放熱板の少なくとも一方は、中央に電気部
品が配置されるとともに両端が金属ケースの両側面に接
合されるものである。According to a fourth aspect of the present invention, there is provided the electrical device according to any one of the first to third aspects, wherein at least one of the first radiator plate and the second radiator plate has an electrical component disposed at the center. At the same time, both ends are joined to both side surfaces of the metal case.
【００１６】そして、第１の放熱板および第２の放熱板
の少なくとも一方は、中央に電気部品を配置するととも
に両端を金属ケースの両側面に接合したので、電気部品
から放熱板に伝達された熱が金属ケースの両側面に分散
させて有効に放熱される。At least one of the first radiator plate and the second radiator plate has an electric component disposed at the center and both ends are joined to both side surfaces of the metal case, so that the electric component is transmitted to the radiator plate. The heat is distributed to both sides of the metal case and is effectively dissipated.
【００１７】請求項５記載の放電灯点灯装置は、請求項
１ないし４いずれか一記載の電気機器の電気部品が、放
電ランプを点灯させる点灯回路部品を構成しているもの
である。According to a fifth aspect of the present invention, there is provided a discharge lamp lighting device, wherein the electric component of the electric device according to any one of the first to fourth aspects constitutes a lighting circuit component for lighting the discharge lamp.
【００１８】そして、請求項１ないし４いずれか一記載
の電気機器の電気部品が、放電ランプを点灯させる点灯
回路部品を構成しているので、点灯回路部品の信頼性が
向上する。Further, since the electric component of the electric device according to any one of claims 1 to 4 constitutes a lighting circuit component for lighting the discharge lamp, the reliability of the lighting circuit component is improved.
【００１９】[0019]
【発明の実施の形態】以下、本発明の一実施の形態を図
面を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.
【００２０】図１は放電灯点灯装置の断面図、図２は放
電灯点灯装置の上側の金属ケースを外した状態の平面図
であり、図３は第１の放熱板を示し、(a)は平面図、(b)
は正面図であり、図４は第２の放熱板を示し、(a)は平
面図、(b)は正面図であり、図５は点灯回路の回路図で
あり、図６は放電灯点灯装置のインダクタンス素子の部
分の断面図である。FIG. 1 is a cross-sectional view of the discharge lamp lighting device, FIG. 2 is a plan view of the discharge lamp lighting device with the upper metal case removed, and FIG. 3 shows a first radiator plate. Is a plan view, (b)
4 is a front view, FIG. 4 shows a second heat sink, (a) is a plan view, (b) is a front view, FIG. 5 is a circuit diagram of a lighting circuit, and FIG. It is sectional drawing of the part of the inductance element of a device.
【００２１】図１および図２に示すように、電気機器と
して放電灯点灯装置11を示し、この放電灯点灯装置11
は、筒形のケース体12、およびこのケース体12内に収納
される点灯回路部品13を実装した基板14を有している。As shown in FIGS. 1 and 2, a discharge lamp lighting device 11 is shown as an electric device.
Has a cylindrical case body 12 and a board 14 on which a lighting circuit component 13 housed in the case body 12 is mounted.
【００２２】ケース体12は、下側および上側の金属ケー
ス17，18を備え、これら金属ケース17，18は、基板部17
a，18aおよび基板部17a，18aの両側から略直角に折曲さ
れた両側の側板部17b，18bを有する断面略コ字形で、両
側の側板部17b，18b間に開口部17c，18cが形成されてい
る。そして、互いの開口部17c，18cを互いに対向させて
金属ケース17，18を組み合わせることで、両端方向に長
尺な筒形のケース体12が構成される。The case body 12 includes lower and upper metal cases 17, 18, and the metal cases 17, 18
a, 18a and both sides 17b of the base plate 17a, 18b are bent substantially at right angles from both sides of the base plate 17a, 18b, and the opening 17c, 18c is formed between the side plates 17b, 18b. Have been. Then, by combining the metal cases 17 and 18 with the openings 17c and 18c facing each other, the cylindrical case body 12 which is long in both end directions is configured.
【００２３】基板14は、ケース体12の長手方向に対応し
て長尺に形成され、上面に点灯回路部品13の大部分を構
成する各種の電気部品21が実装されている。基板14の両
端には入出力用の複数のリード線接続端子22が実装され
ている。The substrate 14 is formed to be long corresponding to the longitudinal direction of the case body 12, and has various electric components 21 constituting the majority of the lighting circuit component 13 mounted on the upper surface thereof. A plurality of input / output lead wire connection terminals 22 are mounted on both ends of the board 14.
【００２４】また、図５に示すように、放電灯点灯装置
11の点灯回路は、商用交流電源Ｅにダイオードブリッジ
で構成される全波整流回路25の入力端子が接続され、こ
の全波整流回路25の出力端子に容量の大きな第１のコン
デンサC1が接続され、この第１のコンデンサC1にはダイ
オードD1、および第１のコンデンサC1に比べて容量が小
さい第２のコンデンサC2の直列回路が接続されている。Also, as shown in FIG.
In the lighting circuit 11, an input terminal of a full-wave rectifier circuit 25 composed of a diode bridge is connected to a commercial AC power supply E, and a first capacitor C1 having a large capacity is connected to an output terminal of the full-wave rectifier circuit 25. A series circuit of a diode D1 and a second capacitor C2 having a smaller capacity than the first capacitor C1 is connected to the first capacitor C1.
【００２５】第２のコンデンサC2には、インバータ回路
26が接続されている。このインバータ回路26には、イン
バータトランスTrの一次巻線Tr1および共振用のコンデ
ンサC3の共振回路27、およびスイッチング素子となるト
ランジスタQ1のコレクタ、エミッタが接続されている。
トランジスタQ1のエミッタ、コレクタ間には、ダイオー
ドD2およびダイオードD3の直列回路が接続されている。
ダイオードD1とダイオードD2およびダイオードD3の接続
点との間には、充電用コンデンサC4およびインダクタン
ス素子としてのインダクタL1の直列回路が接続され、第
２のコンデンサC2、充電用コンデンサC4およびインダク
タL1などにて、振動回路28が構成されている。An inverter circuit is connected to the second capacitor C2.
26 is connected. The inverter circuit 26 is connected to a primary winding Tr1 of an inverter transformer Tr, a resonance circuit 27 of a resonance capacitor C3, and a collector and an emitter of a transistor Q1 serving as a switching element.
A series circuit of a diode D2 and a diode D3 is connected between the emitter and the collector of the transistor Q1.
A series circuit of a charging capacitor C4 and an inductor L1 as an inductance element is connected between the connection point of the diode D1 and the diode D2 and the diode D3, and is connected to the second capacitor C2, the charging capacitor C4, the inductor L1, and the like. Thus, a vibration circuit 28 is configured.
【００２６】インバータトランスTrの二次巻線Tr2に
は、放電ランプとしての蛍光ランプFLのフィラメントFL
１，FL2が接続され、これらフィラメントFL１，FL2には
始動用のコンデンサC5が接続されている。The secondary winding Tr2 of the inverter transformer Tr has a filament FL of a fluorescent lamp FL as a discharge lamp.
1 and FL2, and a starting capacitor C5 is connected to these filaments FL1 and FL2.
【００２７】そして、全波整流回路25の電圧値が充電用
コンデンサC4の電圧値以上のときには第１のコンデンサ
C1および第２のコンデンサC2からインバータ回路26に入
力電流が供給される。一方、全波整流回路25の電流値が
充電用コンデンサC4の電圧値より低下するときには、振
動回路27から入力電流が供給される。When the voltage value of the full-wave rectifier circuit 25 is higher than the voltage value of the charging capacitor C4, the first capacitor
An input current is supplied to the inverter circuit 26 from C1 and the second capacitor C2. On the other hand, when the current value of the full-wave rectifier circuit 25 becomes lower than the voltage value of the charging capacitor C4, the input current is supplied from the oscillation circuit 27.
【００２８】トランジスタQ1の高周波スイッチング動作
により、インバータトランスTrの一次巻線Tr1とコンデ
ンサC3との共振回路27が共振し、共振電圧がインバータ
トランスTrの二次巻線Tr2に誘起されて、蛍光ランプFL
に供給される。コンデンサC5により蛍光ランプFLの各フ
ィラメントFL１，FL2が予熱されるとともに、コンデン
サC5の両端に高電圧が発生して蛍光ランプFLの各フィラ
メントFL１，FL2間に印加され、蛍光ランプFLは始動、
点灯される。By the high-frequency switching operation of the transistor Q1, the resonance circuit 27 of the primary winding Tr1 of the inverter transformer Tr and the capacitor C3 resonates, and a resonance voltage is induced in the secondary winding Tr2 of the inverter transformer Tr, so that the fluorescent lamp FL
Supplied to The filaments FL1 and FL2 of the fluorescent lamp FL are preheated by the capacitor C5, and a high voltage is generated across the both ends of the capacitor C5 and applied between the filaments FL1 and FL2 of the fluorescent lamp FL.
It is lit.
【００２９】また、放電ランプFLを点灯させる点灯回路
部品13のうち、トランジスタQ1が発熱量が多い電気部品
つまり発熱部品として挙げられ、このトランジスタQ1に
放熱構造が採用される。Further, among the lighting circuit components 13 for lighting the discharge lamp FL, the transistor Q1 is cited as an electric component having a large amount of heat generation, that is, a heat generating component, and a heat dissipation structure is adopted for the transistor Q1.
【００３０】この放熱構造では、図１および図２に示す
ように、板状にモールドされたトランジスタQ1をその最
も広い面が基板14の上面に略平行状になるように倒した
状態で、このトランジスタQ1を下側と上側とから挟み込
む第１の放熱板31および第２の放熱板32を有している。In this heat dissipation structure, as shown in FIGS. 1 and 2, the transistor Q1 molded in a plate shape is folded down so that its widest surface is substantially parallel to the upper surface of the substrate 14. It has a first radiator plate 31 and a second radiator plate 32 that sandwich the transistor Q1 from below and above.
【００３１】第１の放熱板31は、図２および図３に示す
ように、例えば、熱伝達性に優れた銅などの金属材料
で、基板14上に取り付けられるベース部34、およびこの
ベース部34の両側から略直角に折曲されて金属ケース17
の両側の側板部17bの内面に接合される金属ケース接合
部35が形成されている。ベース部34の上面中央はトラン
ジスタQ1の一面側である下面側が配置される電気部品接
合部36として構成され、この電気部品接合部36の両側に
は、第２の放熱板32を固定するねじ37が螺着する取付孔
38が形成されているとともに、基板14と第１の放熱板31
とを固定するねじ39が螺着する複数の取付孔40が形成さ
れている。両側の金属ケース接合部35には、金属ケース
17の側板部17bに固定する図示しないねじが螺着する取
付孔41が形成されている。As shown in FIGS. 2 and 3, the first radiating plate 31 is made of, for example, a metal material such as copper having excellent heat conductivity, and is provided with a base portion 34 mounted on the substrate 14 and a base portion 34. The metal case 17 is bent almost at right angles from both sides of 34
Metal case joints 35 are formed on the inner surfaces of the side plates 17b on both sides of the metal case. The center of the upper surface of the base portion 34 is configured as an electric component joint portion 36 on which the lower surface side, which is one surface side of the transistor Q1, is disposed. On both sides of the electric component joint portion 36, screws 37 for fixing the second heat sink 32 are provided. Mounting screw holes
38, the substrate 14 and the first heat sink 31
Are formed with a plurality of mounting holes 40 into which screws 39 are fixed. The metal case joints 35 on both sides
A mounting hole 41 into which a screw (not shown) fixed to the side plate portion 17b of the screw 17 is screwed is formed.
【００３２】第２の放熱板32は、図２および図４に示す
ように、トランジスタQ1の他面側である上面側に配置さ
れる電気部品接合部43を有し、この電気部品接合部43の
両側から第１の放熱板31のベース部34へ向けて略直角に
折曲された折曲部44が形成され、これら両側の折曲部44
から両側方向に略直角に折曲されて第１の放熱板31のベ
ース部34上に接合される放熱板接合部45が形成されてい
る。両側の放熱板接合部45には、ねじ37が挿通される挿
通孔46が形成されている。As shown in FIGS. 2 and 4, the second heat sink 32 has an electric component joint 43 disposed on the upper surface, which is the other surface of the transistor Q1. Are formed at both sides of the first heat sink 31 toward the base portion 34 of the first heat sink 31 at substantially right angles.
A radiating plate joining portion 45 is formed, which is bent at substantially right angles in both side directions from above and is joined to the base portion 34 of the first radiating plate 31. Insertion holes 46 into which the screws 37 are inserted are formed in the heat sink joining portions 45 on both sides.
【００３３】トランジスタQ1と各放熱板31，32との間に
は、熱伝導に優れた材質で形成された熱伝導シート48，
49が介在されている。これら熱伝導シート48，49は、ト
ランジスタQ1と各放熱板31，32との間に、約２５〜５０
％程度の圧縮率に圧縮された状態で介在され、トランジ
スタQ1および各放熱板31，32に密着し、トランジスタQ1
と各放熱板31，32との間のギャップを無くしている。Between the transistor Q1 and each of the heat radiating plates 31, 32, a heat conductive sheet 48, made of a material having excellent heat conductivity,
49 are interposed. These heat conductive sheets 48 and 49 are provided between the transistor Q1 and the heat sinks 31 and 32 by about 25 to 50.
%, And is in close contact with the transistor Q1 and the heat sinks 31, 32,
The gap between the heat sinks 31 and 32 is eliminated.
【００３４】そして、点灯動作時に、トランジスタQ1か
ら発生した熱は、トランジスタQ1の下面側からは熱伝導
シート48を通じて第１の放熱板31に伝達され、トランジ
スタQ1の上面側からは熱伝導シート49を通じて第２の放
熱板32に伝達されるとともに、この第２の放熱板32から
第１の放熱板31に伝達され、第１の放熱板31から金属ケ
ース17に伝達されて放熱される。During the lighting operation, the heat generated from the transistor Q1 is transmitted from the lower surface of the transistor Q1 to the first radiator plate 31 through the heat conductive sheet 48, and is transmitted from the upper surface of the transistor Q1 to the heat conductive sheet 49. Is transmitted to the second heat radiating plate 32, and is transmitted from the second heat radiating plate 32 to the first heat radiating plate 31, and is transmitted from the first heat radiating plate 31 to the metal case 17 to be radiated.
【００３５】このように、トランジスタQ1の下面側およ
び上面側に配置される第１の放熱板31と第２の放熱板32
との間でトランジスタQ1を挟み込んでいることにより、
熱伝達のための有効面積を広くとれ、トランジスタQ1の
熱を第１の放熱板31および第２の放熱板32に有効に伝達
できて、金属ケース17に放熱できるので、トランジスタ
Q1からの放熱性を向上でき、トランジスタQ1の信頼性を
向上できる。As described above, the first radiator plate 31 and the second radiator plate 32 arranged on the lower surface side and the upper surface side of the transistor Q1 are provided.
With the transistor Q1 sandwiched between
Since the effective area for heat transfer can be widened, the heat of the transistor Q1 can be effectively transmitted to the first heat radiating plate 31 and the second heat radiating plate 32, and can be radiated to the metal case 17.
The heat dissipation from Q1 can be improved, and the reliability of transistor Q1 can be improved.
【００３６】さらに、トランジスタQ1と第１の放熱板31
および第２の放熱板32の少なくとも一方との間に熱伝導
シート48，49を介在したので、トランジスタQ1と第１の
放熱板31および第２の放熱板32との接合面の平滑度のば
らつきによって接合面にギャップが生じるような場合で
も、トランジスタQ1と第１の放熱板31および第２の放熱
板32との密着性を向上させ、トランジスタQ1の熱を第１
の放熱板31および第２の放熱板32に有効に伝達できる。
特に、熱伝導シート48，49を、トランジスタQ1と第１の
放熱板31および第２の放熱板32との間に、約２５〜５０
％程度の圧縮率に圧縮された状態で介在させることによ
り、熱伝導シート48，49がトランジスタQ1および第１の
放熱板31および第２の放熱板32に密着し、トランジスタ
Q1と第１の放熱板31および第２の放熱板32との間のギャ
ップを無くして熱伝達性を高めることができる。Further, the transistor Q1 and the first heat sink 31
And the heat conductive sheets 48 and 49 are interposed between at least one of the first heat radiating plate 32 and the second heat radiating plate 32. Therefore, even when a gap is generated in the bonding surface, the adhesion between the transistor Q1 and the first radiator plate 31 and the second radiator plate 32 is improved, and the heat of the transistor Q1 is transferred to the first radiator plate 32.
To the heat radiating plate 31 and the second heat radiating plate 32.
In particular, the heat conductive sheets 48 and 49 are provided between the transistor Q1 and the first radiator plate 31 and the second radiator plate 32 by about 25 to 50.
%, The heat conductive sheets 48 and 49 are brought into close contact with the transistor Q1 and the first heat radiating plate 31 and the second heat radiating plate 32, and
The gap between Q1 and the first radiator plate 31 and the second radiator plate 32 can be eliminated to enhance heat transfer.
【００３７】さらに、トランジスタQ1の下面および上面
の広い面の略全面に第１の放熱板31および第２の放熱板
32を配置したので、熱伝達のための有効面積を広くと
れ、トランジスタQ1の熱を第１の放熱板31および第２の
放熱板32に有効に伝達できる。Further, the first heat radiating plate 31 and the second heat radiating plate 31
Since the 32 is arranged, an effective area for heat transfer can be widened, and the heat of the transistor Q1 can be effectively transmitted to the first heat radiating plate 31 and the second heat radiating plate 32.
【００３８】さらに、第１の放熱板31の中央にトランジ
スタQ1を配置するとともに両端を金属ケース17の両側の
側板部17cに接合したので、トランジスタQ1から第１の
放熱板31に伝達された熱を金属ケース17の両側の側板部
17cに分散させて有効に放熱できる。Further, since the transistor Q1 is arranged at the center of the first heat sink 31 and both ends are joined to the side plates 17c on both sides of the metal case 17, the heat transferred from the transistor Q1 to the first heat sink 31 is formed. The metal case 17 on both side plates
The heat can be dissipated in 17c effectively.
【００３９】また、トランジスタQ1の広い面の一面に放
熱板が内蔵されている場合には、その放熱板が内蔵され
た一面からの発熱が他面からの発熱に比べて大きく、一
面側には熱伝導シートを介在させなくても、十分な熱伝
達性を得ることができるので、一面側に介在される熱伝
導シートを削減し、安価にできる。When a heat sink is built in one surface of the wide surface of the transistor Q1, the heat generated from one surface having the heat sink is larger than the heat generated from the other surface. Sufficient heat transfer can be obtained without interposing a heat conductive sheet, so that the number of heat conductive sheets interposed on one side can be reduced and the cost can be reduced.
【００４０】また、第２の放熱板32は、トランジスタQ1
から伝達される熱を第１の放熱板31に伝達して金属ケー
ス17に放熱するので、放熱効率が第１の放熱板31に比べ
て低いが、第２の放熱板32に銅などの熱伝導に優れた材
料を使用すれば、第２の放熱板32から第１の放熱板31へ
の熱伝達性を高め、放熱効率を向上できる。The second heat sink 32 is connected to the transistor Q1.
Is transmitted to the first heat radiating plate 31 to radiate heat to the metal case 17, so that the heat radiating efficiency is lower than that of the first heat radiating plate 31, If a material having excellent conductivity is used, the heat transfer from the second heat radiating plate 32 to the first heat radiating plate 31 can be improved, and the heat radiation efficiency can be improved.
【００４１】また、図６に示すように、振動回路28のイ
ンダクタンス素子としてのインダクタL1は、ニッケル系
のコア52に銅線53が巻かれた構造になっていて高周波電
流が流れるため、コア52の漏れ磁束により金属ケース1
7，18との間にリーケージロスを発生するとともに、コ
ア52が振動して騒音が発生してしまう。そこで、インダ
クタL1を基板14の中央に実装することにより、コア52の
漏れ磁束により金属ケース17，18との間に生じるリーケ
ージロスを低減でき、また、コア52を例えばシリコンな
どの振動吸収材54を介して金属ケース18で押えることに
より、コア52の振動を抑制して騒音の発生を低減できる
とともに、インダクタL1の発熱を振動吸収材54を通じて
金属ケース18に有効に放熱できる。As shown in FIG. 6, the inductor L1 as an inductance element of the oscillation circuit 28 has a structure in which a copper wire 53 is wound around a nickel-based core 52, and a high-frequency current flows. Leakage flux of metal case 1
Leakage loss is generated between the cores 7 and 18, and the core 52 vibrates to generate noise. Therefore, by mounting the inductor L1 at the center of the substrate 14, leakage loss generated between the metal cases 17, 18 due to leakage magnetic flux of the core 52 can be reduced, and the core 52 can be made of a vibration absorbing material 54 such as silicon. By pressing the metal case 18 through the metal case 18, the vibration of the core 52 can be suppressed and the generation of noise can be reduced, and the heat generated by the inductor L1 can be effectively radiated to the metal case 18 through the vibration absorbing material 54.
【００４２】[0042]
【発明の効果】請求項１記載の電気機器によれば、電気
部品の一面側および他面側に熱伝達可能に配置される第
１の放熱板と第２の放熱板との間で電気部品を挟み込む
ことにより、熱伝達のための有効面積を広くとれ、電気
部品の熱を第１の放熱板および第２の放熱板に有効に伝
達できて、金属ケースに放熱できるので、電気部品から
の放熱性を向上でき、電気部品の信頼性を向上できる。According to the first aspect of the present invention, the electric component is provided between the first heat radiating plate and the second heat radiating plate which are arranged so that heat can be transferred to one side and the other side of the electric component. , The effective area for heat transfer can be widened, the heat of the electric component can be effectively transmitted to the first radiator plate and the second radiator plate, and the heat can be radiated to the metal case. Heat dissipation can be improved, and the reliability of electrical components can be improved.
【００４３】請求項２記載の電気機器によれば、請求項
１記載の電気機器の効果に加えて、電気部品と第１の放
熱板および第２の放熱板の少なくとも一方との間に熱伝
導シートを介在したので、電気部品と放熱板との接合面
の平滑度のばらつきによって接合面にギャップが生じる
ような場合でも、電気部品と放熱板との密着性を向上さ
せ、電気部品の熱を放熱板に有効に伝達できる。According to the electric device of the second aspect, in addition to the effect of the electric device of the first aspect, heat conduction between the electric component and at least one of the first radiator plate and the second radiator plate. The interposition of the sheet improves the adhesion between the electrical component and the heat sink, and reduces the heat of the electrical component, even if there is a gap in the joint surface due to unevenness in the smoothness of the joint surface between the electrical component and the heat sink. It can be effectively transmitted to the heat sink.
【００４４】請求項３記載の電気機器によれば、請求項
１または２記載の電気機器の効果に加えて、電気部品の
一面および他面の略全面に第１の放熱板および第２の放
熱板を配置したので、熱伝達のための有効面積を広くと
れ、電気部品の熱を第１の放熱板および第２の放熱板に
有効に伝達できる。According to the electric device of the third aspect, in addition to the effects of the electric device of the first or second aspect, the first heat radiating plate and the second heat radiating plate are provided on substantially one surface and the other surface of the electric component. Since the plates are arranged, the effective area for heat transfer can be widened, and the heat of the electric component can be effectively transmitted to the first heat sink and the second heat sink.
【００４５】請求項４記載の電気機器によれば、請求項
１ないし３いずれか一記載の電気機器の効果に加えて、
第１の放熱板および第２の放熱板の少なくとも一方は、
中央に電気部品を配置するとともに両端を金属ケースの
両側面に接合したので、電気部品から放熱板に伝達され
た熱を金属ケースの両側面に分散させて有効に放熱でき
る。According to the electric device of the fourth aspect, in addition to the effects of the electric device of the first aspect,
At least one of the first heat sink and the second heat sink is
Since the electric component is arranged at the center and both ends are joined to both side surfaces of the metal case, the heat transmitted from the electric component to the heat radiating plate can be distributed to both side surfaces of the metal case to effectively radiate heat.
【００４６】請求項５記載の放電灯点灯装置によれば、
請求項１ないし４いずれか一記載の電気機器の電気部品
が、放電ランプを点灯させる点灯回路部品を構成してい
るので、点灯回路部品の信頼性を向上できる。According to the discharge lamp lighting device of the fifth aspect,
Since the electric component of the electric device according to any one of claims 1 to 4 constitutes a lighting circuit component for lighting the discharge lamp, the reliability of the lighting circuit component can be improved.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の電気機器の一実施の形態を示す放電灯
点灯装置の断面図である。FIG. 1 is a cross-sectional view of a discharge lamp lighting device showing an embodiment of an electric apparatus according to the present invention.
【図２】同上放電灯点灯装置の上側の金属ケースを外し
た状態の平面図である。FIG. 2 is a plan view of the discharge lamp lighting device with the upper metal case removed.
【図３】同上第１の放熱板を示し、(a)は平面図、(b)は
正面図である。FIGS. 3A and 3B show the first heat sink, FIG. 3A is a plan view, and FIG. 3B is a front view.
【図４】同上第２の放熱板を示し、(a)は平面図、(b)は
正面図である。FIGS. 4A and 4B show a second radiator plate, wherein FIG. 4A is a plan view and FIG. 4B is a front view.
【図５】同上点灯回路の回路図である。FIG. 5 is a circuit diagram of a lighting circuit according to the embodiment.
【図６】同上放電灯点灯装置のインダクタンス素子の部
分の断面図である。FIG. 6 is a cross-sectional view of an inductance element of the discharge lamp lighting device.
11 電気機器としての放電灯点灯装置 13 点灯回路部品 17，18 金属ケース 31 第１の放熱板 32 第２の放熱板 48，49 熱伝導シート FL 放電ランプとしての蛍光ランプ Q1 電気部品としてのトランジスタ 11 Discharge lamp lighting device as electric equipment 13 Lighting circuit parts 17, 18 Metal case 31 First heat sink 32 Second heat sink 48, 49 Heat conduction sheet FL Fluorescent lamp as discharge lamp Q1 Transistor as electric part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 辻 俊雄 東京都品川区東品川四丁目３番１号 東芝 ライテック株式会社内 Ｆターム(参考） 3K014 DA05 EA01 LB03 LB04 5E322 AA03 AA04 AA11 AB01 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toshio Tsuji 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo F-term in Toshiba Lighting & Technology Corporation (reference) 3K014 DA05 EA01 LB03 LB04 5E322 AA03 AA04 AA11 AB01
Claims (5)
れる第１の放熱板と；電気部品の一面と相反する他面側
に熱伝達可能に配置され、第１の放熱板との間で電気部
品を挟み込むとともに第１の放熱板に接合される第２の
放熱板と；電気部品が配置されるとともに第１の放熱板
および第２の放熱板の少なくとも一方が接合される金属
ケースと；を具備していることを特徴とする電気機器。A first heat radiating plate disposed on one side of the electric component so as to be able to transfer heat; and a first heat radiating plate disposed on the other side opposite to one side of the electric component so as to be able to transfer heat. A second radiator plate sandwiching the electric component therebetween and joined to the first radiator plate; and a metal case in which the electric component is disposed and at least one of the first radiator plate and the second radiator plate is joined. And electrical equipment comprising:
熱板の少なくとも一方との間に熱伝導シートが介在され
ることを特徴とする請求項１記載の電気機器。2. The electric device according to claim 1, wherein a heat conductive sheet is interposed between the electric component and at least one of the first radiator plate and the second radiator plate.
１の放熱板および第２の放熱板が配置されることを特徴
とする請求項１または２記載の電気機器。3. The electric device according to claim 1, wherein the first heat radiating plate and the second heat radiating plate are disposed on substantially the entire surface of one side and the other side of the electric component.
くとも一方は、中央に電気部品が配置されるとともに両
端が金属ケースの両側面に接合されることを特徴とする
請求項１ないし３いずれか一記載の電気機器。4. An electronic device according to claim 1, wherein at least one of the first heat radiating plate and the second heat radiating plate has an electric component disposed in the center and both ends are joined to both side surfaces of the metal case. 3. The electric device according to any one of 3.
機器の電気部品が、放電ランプを点灯させる点灯回路部
品を構成していることを特徴とする放電灯点灯装置。5. A discharge lamp lighting device, wherein the electric component of the electric device according to claim 1 constitutes a lighting circuit component for lighting a discharge lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001018852A JP2002223089A (en) | 2001-01-26 | 2001-01-26 | Electric equipment and discharge lamp lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001018852A JP2002223089A (en) | 2001-01-26 | 2001-01-26 | Electric equipment and discharge lamp lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002223089A true JP2002223089A (en) | 2002-08-09 |
Family
ID=18884818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001018852A Withdrawn JP2002223089A (en) | 2001-01-26 | 2001-01-26 | Electric equipment and discharge lamp lighting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002223089A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100669768B1 (en) | 2004-11-17 | 2007-01-16 | 삼성에스디아이 주식회사 | Structure for heat dissipation of intelligent power module, and display module equipped with the same |
| JP2008135235A (en) * | 2006-11-27 | 2008-06-12 | Matsushita Electric Works Ltd | Discharge lamp lighting device |
| JP2008258066A (en) * | 2007-04-06 | 2008-10-23 | Koizumi Lighting Technology Corp | Led luminaire |
| JP2010040597A (en) * | 2008-07-31 | 2010-02-18 | Toshiba Lighting & Technology Corp | Electrical component and lighting fixture |
| JP2010282753A (en) * | 2009-06-02 | 2010-12-16 | Denso Corp | Discharge lamp unit |
| JPWO2020144985A1 (en) * | 2019-01-10 | 2021-12-09 | ビークルエナジージャパン株式会社 | Battery pack |
-
2001
- 2001-01-26 JP JP2001018852A patent/JP2002223089A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100669768B1 (en) | 2004-11-17 | 2007-01-16 | 삼성에스디아이 주식회사 | Structure for heat dissipation of intelligent power module, and display module equipped with the same |
| JP2008135235A (en) * | 2006-11-27 | 2008-06-12 | Matsushita Electric Works Ltd | Discharge lamp lighting device |
| JP2008258066A (en) * | 2007-04-06 | 2008-10-23 | Koizumi Lighting Technology Corp | Led luminaire |
| JP2010040597A (en) * | 2008-07-31 | 2010-02-18 | Toshiba Lighting & Technology Corp | Electrical component and lighting fixture |
| JP2010282753A (en) * | 2009-06-02 | 2010-12-16 | Denso Corp | Discharge lamp unit |
| US8421359B2 (en) | 2009-06-02 | 2013-04-16 | Denso Corporation | Discharge lamp unit having heat dissipation structure |
| JPWO2020144985A1 (en) * | 2019-01-10 | 2021-12-09 | ビークルエナジージャパン株式会社 | Battery pack |
| JP7078757B2 (en) | 2019-01-10 | 2022-05-31 | ビークルエナジージャパン株式会社 | Battery pack |
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