JP2006331858A - Lighting system - Google Patents

Lighting system Download PDF

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Publication number
JP2006331858A
JP2006331858A JP2005153882A JP2005153882A JP2006331858A JP 2006331858 A JP2006331858 A JP 2006331858A JP 2005153882 A JP2005153882 A JP 2005153882A JP 2005153882 A JP2005153882 A JP 2005153882A JP 2006331858 A JP2006331858 A JP 2006331858A
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Prior art keywords
circuit board
printed circuit
leds
radiator
holes
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JP2005153882A
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Japanese (ja)
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Hideaki Nagano
秀章 永野
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Canon Inc
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Canon Inc
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Priority to JP2005153882A priority Critical patent/JP2006331858A/en
Publication of JP2006331858A publication Critical patent/JP2006331858A/en
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  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high light-speed lighting system capable of obtaining an excellent heat radiation effect in a simple structure by having a radiator and LEDs in physical contact. <P>SOLUTION: The lighting system, for mounting in free detachment on an imaging device, is provided with a plurality of LEDs 3, a printed circuit board 4 equipped with a plurality of holes for mounting the plurality of LEDs 3, and a radiator 5 equipped with the same number of protrusions as that of the plurality of holes on the printed circuit board. Each of the plurality of LEDs 3 is arranged on a corresponding one of the holes fitted on the printed circuit board 4, and each of the plurality of protrusions of the radiator 5 is inserted into a corresponding position of the plurality of holes fitted on the printed circuit board 4 to come in contact with and be fixed to the LED 3 arranged on the printed circuit board 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ビデオカメラ等の撮像装置に装着されるＬＥＤを光源として用いる照明装置におけるＬＥＤの効果的な放熱構造に関するものである。   The present invention relates to an effective LED heat dissipation structure in an illumination device that uses an LED mounted on an imaging device such as a video camera as a light source.

ＬＥＤ（発光ダイオード）は、小型で消費電力の微小な光源として、その高輝度化、白色ＬＥＤの開発の進展につれて、信号機および液晶ディスプレイのバックパネル等様々な用途に適用され、一般照明用として蛍光灯、ハロゲンランプ等の光源に代わる光源として注目が集まっている。このような用途として使用するためにＬＥＤは高光束を必要とされる。そのためには、なるべく高い電流を用いてＬＥＤを駆動する必要があるが、高い電流による熱の発生のためにＬＥＤの性能を著しく劣化させるという問題も有り、例えば特開２００２-２５２３７３のような手段を用いて大電流によりＬＥＤ内部で発生した熱をＬＥＤ外部（パッケージ表面）へ効率よく放熱する構造のＬＥＤの開発も進んでいる。   LEDs (light-emitting diodes) are small and light-powered light sources that are applied to various applications such as traffic lights and back panels of liquid crystal displays as the development of white LEDs increases in brightness and fluorescent light for general lighting. Attention has been focused on as a light source to replace light sources such as lamps and halogen lamps. The LED is required to have a high luminous flux in order to be used as such an application. For this purpose, it is necessary to drive the LED using as high a current as possible, but there is also a problem that the performance of the LED is significantly deteriorated due to the generation of heat due to the high current. For example, a means such as JP-A-2002-252373 Development of an LED having a structure that efficiently dissipates heat generated inside the LED due to a large current to the outside of the LED (the package surface) is also progressing.

一般的に、高光速のＬＥＤを用いて照明装置を構成する場合には、ＬＥＤをプリント回路基板上に実装し装置の内部へ組み込まれる構成となるが、前記ＬＥＤ外部への放熱を効率よく行うＬＥＤを用いて照明装置を構成した場合においてもＬＥＤ外部まで伝達された熱を外気へ消散させるための良好な放熱経路を構成する必要があり、従来のプリント回路基板ではＬＥＤ内部で発生した熱を外気へ放熱するのためには効果的ではない。   In general, when a lighting device is configured using a high-speed LED, the LED is mounted on a printed circuit board and incorporated into the device, but heat is efficiently released to the outside of the LED. Even when a lighting device is configured using an LED, it is necessary to configure a good heat dissipation path for dissipating the heat transmitted to the outside of the LED to the outside air. In the conventional printed circuit board, the heat generated inside the LED is required. It is not effective for dissipating heat to the outside air.

そのために、プリント回路基板にスルーホールを構成し、ＬＥＤを実装していない裏面に熱を伝達しプリント回路基板裏面に接着された放熱器に熱を伝達させることにより、放熱器から効果的に放熱を行う構成のもの（例えば、特許文献１参照）や、金属基層の上に誘電体層を形成しその上にＬＥＤを実装し、通過部を設けた誘電体層のＬＥＤと金属基層の間には熱伝導部材を設けることにより放熱効果を高めた構成のもの（例えば、特許文献２参照）がある。
特開２００２−２５２３７３号公報 特開２００３−１２４５２４号公報 For this purpose, through holes are formed in the printed circuit board, heat is transferred to the backside where the LEDs are not mounted, and heat is transferred to the heatsink bonded to the backside of the printed circuit board. (For example, refer to Patent Document 1), or a dielectric layer formed on a metal base layer, an LED is mounted on the dielectric layer, and the LED of the dielectric layer provided with a passage portion is between the metal base layer and the metal base layer. Has a structure in which a heat conducting effect is enhanced by providing a heat conducting member (see, for example, Patent Document 2).
JP 2002-252373 A JP 2003-124524 A

上記のような手法は、放熱効果を高めるために効果があるが、放熱器とＬＥＤとの間に例えば接着剤等の物質が存在する為に、ＬＥＤの熱を伝達させて放熱させるための放熱器への熱伝達率が小さくなる。また、ＬＥＤを実装する為に用いる基板に特殊な加工を施しているために製造上の手間がかかるという問題があった。   The above-described method is effective for enhancing the heat dissipation effect. However, since a substance such as an adhesive exists between the heatsink and the LED, the heat dissipation for transferring the heat of the LED to dissipate the heat. The heat transfer rate to the vessel is reduced. In addition, there is a problem in that it takes time and effort to manufacture because the substrate used for mounting the LED is specially processed.

以上の課題を解決するために、本発明の照明装置は次の構成からなる。   In order to solve the above problems, the illumination device of the present invention has the following configuration.

即ち、撮像装置に着脱自在に装着される照明装置であって、複数のＬＥＤと、複数の穴が設けられた前記複数のＬＥＤを実装する為のプリント回路基板と、該プリント回路基板に設けられた複数の穴と同数の複数の突起を設けた放熱器とを備え、前記複数のＬＥＤのそれぞれは前記プリント回路基板に設けられた穴のうちの対応する１つの穴の上に配置され、該放熱器の複数の突起は前記プリント回路基板に設けられた複数の穴の対応する位置へ挿入され、かつ前記プリント回路基板上に配置された前記ＬＥＤに接触され固定される、ことを特徴とした照明装置とするものである。   That is, an illumination device that is detachably attached to an imaging device, and includes a plurality of LEDs, a printed circuit board for mounting the plurality of LEDs provided with a plurality of holes, and the printed circuit board. A plurality of holes and a heat radiator provided with the same number of protrusions, and each of the plurality of LEDs is disposed on a corresponding one of the holes provided in the printed circuit board, A plurality of protrusions of the radiator are inserted into corresponding positions of a plurality of holes provided in the printed circuit board, and are contacted and fixed to the LEDs arranged on the printed circuit board. A lighting device is provided.

本発明によれば、従来のプリント回路基板を用いることにより簡素な構成とすることが出来、かつ放熱器をＬＥＤに接触させることにより良好な放熱効果が得られ、高光速な照明装置を提供することができるものである。   According to the present invention, a simple configuration can be achieved by using a conventional printed circuit board, and a good heat dissipation effect can be obtained by bringing a radiator into contact with an LED, thereby providing a high-speed lighting device. It is something that can be done.

以下、本発明のビデオライト装置を添付図面を参照にして詳細に説明する。   Hereinafter, a video light device of the present invention will be described in detail with reference to the accompanying drawings.

図１に本実施のビデオライト装置の一実施の形態の構成の外観図を示す。   FIG. 1 shows an external view of a configuration of an embodiment of a video light device according to the present embodiment.

図２は図１に示すビデオライトの構造を示す展開図である。   FIG. 2 is a development view showing the structure of the video light shown in FIG.

図１および図２において、１はビデオライト本体であり、フロントカバー１１とリアカバー１２から構成され、フロントカバー１１の前面、上面および側面、リアカバー１２の上面と側面に換気用の穴が設けられている。   1 and 2, reference numeral 1 denotes a video light body, which includes a front cover 11 and a rear cover 12, and is provided with ventilation holes on the front surface, upper surface and side surfaces of the front cover 11 and on the upper surface and side surfaces of the rear cover 12. Yes.

２は集光レンズ部、３は白色ＬＥＤ、４はプリント回路基板、５は放熱器、６はＬＥＤ点灯回路基板、７はアクセサリシューである。   2 is a condenser lens unit, 3 is a white LED, 4 is a printed circuit board, 5 is a radiator, 6 is an LED lighting circuit board, and 7 is an accessory shoe.

また、本実施の形態ではビデオライトの電力供給手段としてバッテリーパック８をビデオライト本体後部に装着する。   In the present embodiment, the battery pack 8 is attached to the rear portion of the video light body as a power supply means for the video light.

白色ＬＥＤ３は、プリント回路基板４上に少なくとも１個以上実装されている。   At least one white LED 3 is mounted on the printed circuit board 4.

プリント回路基板４とＬＥＤ点灯回路基板６は図示しない接続ケーブルで電気的に接続されており、図示しない点灯／消灯スイッチをＯＮにすることにより、バッテリーパック９からの電力をＬＥＤ点灯回路基板６により制御しプリント回路基板４へ電力を供給し白色ＬＥＤ３を発光させ、集光レンズ２により光を集光させビデオライト本体の前方へ照射する。   The printed circuit board 4 and the LED lighting circuit board 6 are electrically connected by a connection cable (not shown), and the power from the battery pack 9 is supplied to the LED lighting circuit board 6 by turning on a lighting / lighting switch (not shown). Control is performed to supply power to the printed circuit board 4 to cause the white LED 3 to emit light, and the light is condensed by the condenser lens 2 and irradiated to the front of the video light main body.

また、本実施のビデオライトはアクセサリシュー８によりビデオカメラ本体に固定される。   Further, the video light of the present embodiment is fixed to the video camera body by the accessory shoe 8.

図３に本実施のビデオライトにおける放熱器の取り付け構造の展開図を示す。   FIG. 3 is a development view of a radiator mounting structure in the video light of the present embodiment.

図３に示すように、プリント回路基板４には白色ＬＥＤと同じ数の複数の穴４１があけられている。複数の白色ＬＥＤ３は、プリント回路基板４の複数の穴４１の上にそれぞれ実装される。   As shown in FIG. 3, the printed circuit board 4 has a plurality of holes 41 as many as the white LEDs. The plurality of white LEDs 3 are respectively mounted on the plurality of holes 41 of the printed circuit board 4.

放熱器５は、プリント回路基板４上の複数の穴４１の対応するように位置に複数の穴４１と同じ数の突起５１が設けてある。   The radiator 5 is provided with the same number of protrusions 51 as the plurality of holes 41 at positions corresponding to the plurality of holes 41 on the printed circuit board 4.

複数の白色ＬＥＤ３を実装したプリント回路基板４は、プリント回路基板４上にあけた複数の穴４１の対応する穴を放熱器５の対応する突起５１に差し込むことによりビデオライト本体１内部で位置決めされ、固定される。   The printed circuit board 4 on which the plurality of white LEDs 3 are mounted is positioned inside the video light body 1 by inserting the corresponding holes of the plurality of holes 41 formed on the printed circuit board 4 into the corresponding protrusions 51 of the radiator 5. Fixed.

放熱器５に設けた突起５１の突出量は、複数の白色ＬＥＤ３を実装したプリント回路基板４の対応する複数の穴４１に挿入し固定されたときに、白色ＬＥＤ３に物理的に接触することが可能となる最小の突出量である。   The protrusion amount of the protrusion 51 provided on the radiator 5 may physically come into contact with the white LED 3 when being inserted and fixed into the corresponding holes 41 of the printed circuit board 4 on which the plurality of white LEDs 3 are mounted. The smallest amount of protrusion possible.

また、プリント回路基板４と放熱器５の固定位置は、放熱器５の突起５１が物理的に接触している白色ＬＥＤ３のハンダ部等にかかる負荷を最小にするために、プリント回路基板４上の４２ａ、４２ｂの白色ＬＥＤのハンダ部から距離を持った位置にて固定する。   The fixing position of the printed circuit board 4 and the radiator 5 is set on the printed circuit board 4 in order to minimize the load applied to the solder portion of the white LED 3 where the protrusion 51 of the radiator 5 is in physical contact. 42a and 42b are fixed at positions spaced from the solder portions of the white LEDs.

図４に放熱器を固定したときの断面図を示す。   FIG. 4 shows a cross-sectional view when the radiator is fixed.

図４に示すように放熱器５の突起５１はプリント回路基板４上の複数の穴４１の対応する位置に基板の位置決めのために挿入されており、プリント回路基板４上に実装された白色ＬＥＤ３の発光面と反対の面に物理的に接触し、白色ＬＥＤ内部で発生した熱が放熱器５へと伝達される。   As shown in FIG. 4, the protrusions 51 of the radiator 5 are inserted into the corresponding positions of the plurality of holes 41 on the printed circuit board 4 for positioning the board, and the white LED 3 mounted on the printed circuit board 4. The surface opposite to the light emitting surface is physically contacted, and the heat generated inside the white LED is transmitted to the radiator 5.

本発明の実施例におけるビデオライトの外観図。The external view of the video light in the Example of this invention. 本発明の実施例におけるビデオライトの構造を示す展開図。The expanded view which shows the structure of the video light in the Example of this invention. 本発明の実施例におけるビデオライトの放熱器の取り付け構造を示す展開図。The expanded view which shows the attachment structure of the radiator of the video light in the Example of this invention. 本発明の実施例におけるビデオライトの放熱器の取り付け状態を示す断面図。Sectional drawing which shows the attachment state of the heat radiator of the video light in the Example of this invention.

符号の説明Explanation of symbols

１ ビデオライト本体
１１ フロントカバー
１２ リアカバー
２ 集光レンズ
３ 白色ＬＥＤ
４ プリント回路基板
４１ プリント回路基板に設けた穴
４２ａ プリント回路基板の固定位置
４２ｂ プリント回路基板の固定位置
５ 放熱器
５１ 放熱器に設けた突起
６ ＬＥＤ点灯回路基板
７ アクセサリシュー
８ バッテリーパック 1 Video Light Body 11 Front Cover 12 Rear Cover 2 Condensing Lens 3 White LED
DESCRIPTION OF SYMBOLS 4 Printed circuit board 41 Hole provided in printed circuit board 42a Fixed position of printed circuit board 42b Fixed position of printed circuit board 5 Radiator 51 Projection provided in radiator 6 LED lighting circuit board 7 Accessory shoe 8 Battery pack

Claims (5)

撮像装置に着脱自在に装着される照明装置であって、複数のＬＥＤと、複数の穴が設けられた前記複数のＬＥＤを実装する為のプリント回路基板と、該プリント回路基板に設けられた複数の穴と同数の複数の突起を設けた放熱器とを備え、前記複数のＬＥＤのそれぞれは前記プリント回路基板に設けられた穴のうちの対応する１つの穴の上に配置され、該放熱器の複数の突起は前記プリント回路基板に設けられた複数の穴の対応する位置へ挿入され、かつ前記プリント回路基板上に配置された前記ＬＥＤに接触され固定される、ことを特徴とした照明装置。   An illumination device that is detachably attached to an imaging device, wherein a plurality of LEDs, a printed circuit board for mounting the plurality of LEDs provided with a plurality of holes, and a plurality of LEDs provided on the printed circuit board Each of the plurality of LEDs is disposed on a corresponding one of the holes provided in the printed circuit board, and the heat radiator. The plurality of projections are inserted into corresponding positions of a plurality of holes provided in the printed circuit board, and are in contact with and fixed to the LEDs arranged on the printed circuit board. . 前記プリント回路基板と前記放熱器は、前記プリント回路基板上に配置された複数のＬＥＤを含む最小の長方形の領域外で固定される、ことを特徴とした請求項１に記載の照明装置。   The lighting device according to claim 1, wherein the printed circuit board and the radiator are fixed outside a minimum rectangular area including a plurality of LEDs arranged on the printed circuit board. 前記放熱器に設けた突起は、前記プリント回路基板の位置決めピンとなる、ことを特徴とした請求項１、２に記載の照明装置。   The lighting device according to claim 1, wherein the protrusion provided on the radiator serves as a positioning pin of the printed circuit board. バッテリーパックを装着し、該バッテリーパックから電源供給を受ける、ことを特徴とした請求項１から３に記載の照明装置。   The lighting device according to claim 1, wherein a battery pack is attached and power is supplied from the battery pack. 前記撮像装置に設けられた電源接点を有するアクセサリシューに勘合して保持され、該電源接点から電源供給を受ける、ことを特徴とした請求項１から３に記載の照明装置。   4. The lighting device according to claim 1, wherein the lighting device is held in engagement with an accessory shoe having a power contact provided in the imaging device, and is supplied with power from the power contact. 5.
JP2005153882A 2005-05-26 2005-05-26 Lighting system Withdrawn JP2006331858A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010186641A (en) * 2009-02-12 2010-08-26 Nikon Corp Lighting device
JP2010538429A (en) * 2007-08-27 2010-12-09 ダイアライト・コーポレーション LED-based hazardous area indicator light with universal mounting structure
JP2011510455A (en) * 2008-01-16 2011-03-31 ライツ、 キャメラ、 アクション エルエルシイ High light source assembly that can be used underwater
CN102221765A (en) * 2011-03-21 2011-10-19 深圳市迪比科电子科技有限公司 Fill light of digital camera
JP2013192051A (en) * 2012-03-14 2013-09-26 Fuji Xerox Co Ltd Light emitting device and image reading device
JP2013246342A (en) * 2012-05-28 2013-12-09 Nikon Corp Luminaire and inside cooling method for luminaire
CN105202378A (en) * 2015-10-23 2015-12-30 陈国经 Portable camera shooting and lighting device with high-power integrated LED

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010538429A (en) * 2007-08-27 2010-12-09 ダイアライト・コーポレーション LED-based hazardous area indicator light with universal mounting structure
JP2011510455A (en) * 2008-01-16 2011-03-31 ライツ、 キャメラ、 アクション エルエルシイ High light source assembly that can be used underwater
JP2010186641A (en) * 2009-02-12 2010-08-26 Nikon Corp Lighting device
CN102221765A (en) * 2011-03-21 2011-10-19 深圳市迪比科电子科技有限公司 Fill light of digital camera
CN102221765B (en) * 2011-03-21 2014-11-19 深圳市迪比科电子科技有限公司 Fill light of digital camera
JP2013192051A (en) * 2012-03-14 2013-09-26 Fuji Xerox Co Ltd Light emitting device and image reading device
JP2013246342A (en) * 2012-05-28 2013-12-09 Nikon Corp Luminaire and inside cooling method for luminaire
CN105202378A (en) * 2015-10-23 2015-12-30 陈国经 Portable camera shooting and lighting device with high-power integrated LED

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Effective date: 20080805