JP2004178908A - Universal lighting device for photography - Google Patents

Universal lighting device for photography Download PDF

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Publication number
JP2004178908A
JP2004178908A JP2002342345A JP2002342345A JP2004178908A JP 2004178908 A JP2004178908 A JP 2004178908A JP 2002342345 A JP2002342345 A JP 2002342345A JP 2002342345 A JP2002342345 A JP 2002342345A JP 2004178908 A JP2004178908 A JP 2004178908A
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Japan
Prior art keywords
illuminator
rotation
frame
main body
rotating frame
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JP2002342345A
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Japanese (ja)
Inventor
Yoichi Namariyama
洋一 鉛山
Yoshiharu Uchida
義春 内田
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UCHIDA GIKEN KK
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UCHIDA GIKEN KK
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Priority to JP2002342345A priority Critical patent/JP2004178908A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device for photography soft and easy for lighting and alternative to stroboscope light. <P>SOLUTION: Two illuminator bodies in which high-brightness and high-efficient fluorescent lamps are combined to be surface light sources are set to be a pair. Each illuminator body is oscillatable by using a universal joint mechanism and can automatically maintain gravitational balance.Furthermore, an illuminating angle against a photographic subject can be set easily. Inverter modulated light type fluorescent lamps are adopted to make fine adjustment. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、写真やビデオ撮影を容易にするための、撮影用照明装置に関するものである。
【0002】
【従来の技術】
従来、自然光に頼らないスタジオなどの撮影においては、手軽で便利なストロボが主に用いられていたが、ストロボ光による撮影は強力な点光源のため、大きな明暗差で強い影が生じやすく、被写体の質感や諧調を表現するのにアンブレラや各種のディフューザ、レフ板等を駆使してライティングを行なっていた。又光源の位置や光量をかえる毎に、フラッシュメーター等で随所の定常光とストロボ光を測定する必要がありその都度発光する必要があった。
一方、光源を何灯も組み合わせて撮影する場合や、ビンやガラス、アクセサリー類等の透過性のある被写体では、反射光のみならず透過光のみ、または透過光を併用する撮影がなされ、適正露光値の把握が更に困難となり、その都度ポロライドカメラ等で何回もテスト撮影をする事が多々あった。
更にストロボ発光器は、電気をコンデンサーにチャージして瞬時に放電するものであるが、放電後速やかにチャージする必要がある。業務用は最低でも1KWs、通常2〜3KWsを2〜3台同時に、且つ断続的に使用するのでピークに耐え得る大容量の電源設備が必要であった。
又、近年著しく進歩しているデジタルカメラは、従来の銀塩フィルムに比べ、撮像素子の特性上現時点では白飛び、黒つぶれが強い、即ち高輝度、低照度部分での諧調表現が困難である。従ってストロボ光をディフューズ(拡散)あるいはバウンス(反射)させて、強い陰影の軽減やハイライト部の諧調の再現を試みていたがベストとは言えなかった。
尚、照明器の機構においては、首振り自在の照明器は有ったが、各仮想回転軸が照明器本体の重心と合致し、且つ2台の照明器本体が、互いに重力のバランスを取りながら連動する物は無かった。(例えば、特許文献1参照)
【0003】
【特許文献1】
特開平7−65623号公報 (第2−3頁、第8図)
【発明が解決しようとする課題】
本発明は、上記の事情に鑑み、自然光が利用できなかったり、又不都合な場合に使用する撮影用照明を、効果的で効率良く使するために考慮されたものであり、その目的は、
(1) 面光源の利用により被写体に極端な陰影を作らず、よりソフトな感じを演出し、その状況を容易に把握できる撮影用照明器具を提供する事。
(2) 被写体に効率よく、又効果的に照射出来るように、光源の位置と、角度を自在に設定できる機構を提供する事。
(3) 照明器本体の位置や角度を変えても転倒しないように、自然にバランスが採れて、常に安定した状態が保持できる機構を提供する事。
(4) 照明器本体の位置や角度を変更する場合、速やかに且つ円滑に行える機構を提供する事。
【0004】
【課題を解決するための手段】
かかる課題を解決した本発明の、撮影用ユニバーサルライティング装置は、
蛍光灯を組み込んだ照明器本体の外周に間隔を持って外設する回転枠を設け、前記照明器本体は外周の上下対称となる軸着点で前記回転枠に回動自在に軸着され、前記回転枠は、前記照明器本体の仮想回転軸と直交する仮想回転軸上の2点で外接する連結バーの一端にある軸着点に回動自在に軸着され、前記連結バーの他端にある軸着点には、併設した照明器本体を組み込んだ回転枠を前記回転枠と互いに干渉しない間隔で軸着し、前記2本の連結バーはその中央部にある軸着点で、更に外接する支柱と回動自在に軸着され、前記支柱は、キャスターを有し全体を保持する架台に固定された装置である。
【0005】
尚、照明器本体を保持する回転枠の軸着点を通る仮想回転軸と、前記回転枠と連結バーとの軸着点を通る仮想回転軸は、互いに交差し、その交点が前記照明器本体の重心と重なる様に構成され、同様に併設した照明器本体も回転枠との軸着点を通る仮想回転軸と、前記回転枠と前記連結バーとの軸着点を通る仮想回転軸は交差し、その交点が併設した前記照明器本体の重心と重なる様に構成することで、各々の照明器本体を常に安定した状態に保持できる。
【0006】
更に前記の撮影用ユニバーサルライティング装置の照明器本体、回転枠、連結バー、及び支柱のそれぞれに設けた軸着点に於いて、パッキンの締め付け具合で静止摩擦力を調整出来るようにする事で照明器本体の位置や角度の調節を速やかに且つ円滑に行う事が出来る。
【0007】
【作用】
本発明は、前記の様に蛍光灯を用いた照明器本体を2台1組とし、位置や首振り角を自由に設定できる様にした事で、ストロボの瞬間的な発光による点光源から、連続的な面光源が得られ、ソフトな陰影を継続的に創る事が出来、且つ2台の照明器本体を駆使して、速やかに各々の位置と角度を効率よく効果的にセットする事が出来るように成ったので、陰影や中間色の出具合をカメラのファインダーで直接確認しながら、確実な撮影が出きる様に成り、特別な経験や勘を必要とせず、極めて高能率な撮影作業が出来るようになった。
【0008】
【発明の実施の形態】
本発明の実施の形態について実施例となる図面を参照して説明する。
図1は、本発明の実施例の全体構成を示す正面説明図であって、1,1’は蛍光灯を装着した照明器本体(以下本体と称す)、2,2’は本体1,1’を回動自在に連結した軸着点101,102及び103,104を介して保持する回転枠、3,3’は両端に回転枠2,2’を互いに干渉しない状態で軸着点201,202、及び203,204で連結する連結バーで、4,4’は連結バー3,3’をほぼ中央の軸着点301、302で支持する支柱、5はキャスター6を有し支柱4,4’を介し全体を保持する架台である。
【0009】
この実施例では照明器本体1,1’に、ソフトな陰影を継続的に得るために蛍光灯を用いたが、通常の蛍光灯では、ソフトで継続的な照明が得られる反面、輝度不足と成るので、近年開発された高周波点灯式ツインパラレル蛍光灯を採用する事により、高能率でちらつきの無い照明 (定格96Wで8,600lm,周波数50,000Hz) が得られた。
【0010】
照明器本体は約900mm角の筐体に、ツインパラレル蛍光灯96W4本を組み込み、全光束34,400lmを効率良く片面に集中させるための反射板を設けた。これを1装置に2台組み込み、それぞれの位置と角度を、被照体に対し最適に合わせる事によって、人物1人の場合はISO 100のフイルムで、絞り8、シャッター速度1/60sec以上で撮れるようになった。
但し業務用としては、2組の装置を左右に配し調光でバランスを採りながら撮影するのが望ましい。
尚多人数の場合は装置数を増やして対応する。
【0011】
撮影用照明には輝度と同じく演色性(色の見え方に及ぼす光源の性質)が重要な要素である。 デジタルカメラの場合はホワイトバランスや色調が、撮影の前後にカメラ自体やパソコンで調整ができるので問題はないが、銀塩フィルムの場合は演色性の良いランプ(例えば色温度5,000K、Ra99等)を使用するか、補色性の有る他のランプを混用するか、又はレンズフィルターで調整する等の配慮が必要である。
【0012】
被照面照度は、本体の位置や角度を変えて調整する事が基本であるが、ランプを選択して点滅したり、電気的な調光を併用して行う事で最適なライティングを行う事が出きる。
【0013】
また、本体1,1’の位置や設定角の固定は、光量の固定と同意語で重要な事であり、その方法は、凹凸の組み合わせや、角度設定用円板を用いて固定する事も出きるが、確実な固定と共に、円滑で迅速に操作出来る事が好ましい。その為に先ず照明器本体1,1’の重心に仮想回転軸を合わせることによって無用な回転力を無くし、更に本体1と1’との質量が均衡する様に連結バー3,3’の中央に軸着点301,302を設け回転力を相殺して、各軸着点(101,102,103,104,201,202,203,204,301,302)での保持に要する力を極力軽減した上で、静摩擦と動摩擦を応用した保持と回動の機能を兼備した軸着点を設けた。
【0014】
かかる構成に於ける全体の移動や回転は、キャスター6によって行い、本体1,1’の左右回動は、本体1が軸着点101、102を仮想軸として回動し、本体1’は軸着点103、104を仮想軸として回動する、上下回動は、本体1が軸着点201、202を仮想軸として回動し、本体1’は軸着点203、204を仮想軸として回動する。尚、本体1と1’の前後回動は、連結バー3,3’の軸着点301,302を仮想軸として回動する。更に、連結バー3,3’を延長する場合は、延長部401,402及び403,404で、連結バー3,3’部材内のインサート(点線図示)を引き出して各ロックビス410でロックする。更に各ロックビス410を外して、インサートを引き出せば分離する事ができる。連結バー3,3’の延長は後述する実施例3,4に対応する為であり、分離は装置の高さ約2.2Mを約1.3Mに下げて、別の部屋等への小移動や格納を容易にする為である。更に輸送等大移動の場合は、各軸着点(101,102,103,104,201,202,203,204,301,302)と、ジョイント部501,502のナットを外して分解する。
尚、電源や調光部等電気関係については図2及び図7で説明する。
【0015】
図2は、本発明の実施例の全体構造を示す側面説明図であって、全体を支え移動機能を持つ架台5は、支柱4と、軸着点301を介し連結バー3を支持し、連結バー3は軸着点201を介して回転枠2を支持する。更に回転枠2は軸着点101を介して本体1を順次支持している。併設の本体1’も同様に架台5を支持していて、それぞれが矢印の如く、軸着点を中心にして回動し、又架台5がキャスター6によって前後左右に変角移動が出来る事は図1での説明した通りである。尚ノブ330は軸着点301に於いて、ロックを緩め(静摩擦力を軽減し)て、本体1,1’を前後回動させ、任意の角度で再度ロックする為のものである。
【0016】
601は電源コード。602は中継コードで、本体1から本体1’への電力と調光信号を中継する。701はメインスイチ付き調光器で、入力電力のON/OFFと、調光信号の送出を行う。702は分電盤で、本体1’の電気回路を切り替えて調光信号のON/OFFと、4本の蛍光灯を2本ずつ分割点灯する。
【0017】
図3は、本発明の実施例となる回動部の構造断面を説明する説明図である。 先ず図3(A)は、本体1と回転枠2を軸着している軸着点101の断面図で、110は貫通しているボルト、120はドライメタル、130は回転枠2に固定した円筒、140は2枚構成のパッキン、150は本体1の補強材、160は平ワッシャ、170はスプリングワッシャ、180はナットで構成されている。尚本体1’も本体1と同様に構成されている。
【0018】
回動と保持、即ち動摩擦力と静摩擦力の調節は、ボルト110とナット180で締め付け強度で行い、ドライメタル120、円筒130、回転枠2、パッキン140、補強材150、平ワッシャ160及びスプリングワッシャ170相互間の摩擦力を利用して、適度な手動力で回動し始め、放すと確実に保持する強度を求めて行う。更に保持する強度が回動によって度々変化しない様に、即ち各接触面の圧力が回動によって変わらないように、ナット180の自由回転を阻止する為ダブルナットとしている。
【0019】
図3(B)は、回転枠2と連結バー3とを軸着している軸着点201の断面図である。その構成はボルト210の一端が回転枠2に固定され、2枚構成のパッキン260を連結バー3,3’に固定された円筒250で挟み、更に連結バー3,3’をドライメタル240と平ワッシャ270、スプリングワッシャ230で挟みナット220で締め付けてなっている。尚、回転枠2’も回転枠2と同様に構成されている。
【0020】
作用は前述の図3(A)と同様で、ナット220を締め付ける事によってパッキン260同士と、パッキン260、回転枠2、連結バー3、ドライメタル240、平ワッシャ270及びスプリングワッシャ230相互間の摩擦抵抗を調節している。尚ボルト210が回転枠2に固定されているので、回動により生ずる回転枠2と連結バー3の位相のずれが連結バー3とナット220間に現われその結果ナット220とボルト210間に相対的な動きが生じて、締め付け圧力が変わり摩擦力が変わっては不都合なため、鍔つきドライメタル240を挿入し、これを含めた摩擦力より大きな阻止力が得られるようにナット220側にスプリングワッシャ230を用いている。
【0021】
図3(C)は、連結バー3と支柱4とを軸着した軸着点301の断面図である。その構成はボルト310の一端が連結バー3に固定され、連結バー3と支柱4の間にパッキン320を挟んで貫通している、ノブ330は支柱4との間にスプリングワッシャ340と平ワッシャ350を挟み、ボルト310と係合している。尚、連結バー3’と支柱4’との軸着点301’も同様に構成されている。
【0022】
動作原理は前記の図3(A)及び図3(B)と同様であるが、摩擦力をノブ330の締め付け方で調整している。尚回動するのは連結バー3,3’と、これに固定されているボルト310であり、回動によって摩擦力の設定が度変わらないように支柱4,4’側に平ワッシャ350を、ノブ330側に回動抵抗の大きいスプリングワッシャ340を配して,ノブ330がボルト310と共に回動するように配慮している。図3(A)や図3(B)と同様にボルト310と支柱4,4’の間にドライメタルを用いなかったのは、回動より制動を重視した為である。
【0023】
図4は、本発明の実施例の代表的な第1の使用例を示す説明図で、本体1を連結バー3,3’の回動によって、少し前方にせり出し、且つ回転枠2の軸着点201,202によって少々下方に傾斜し、更に軸着点101、102を回転軸として少し右に振った例である。一方本体1’は連結バー3,3’の動きに連動して、少し後方に退き軸着点103、104を回転軸として、少々右に振った状態を現わしている。
【0024】
本体1,1’は、何れも上下左右、どの角度に振っても重心は常に連結バーの軸着点201と、対応する軸着点202及び軸着点203、204を結ぶ仮想の回転軸上に有り、更にその質量は支柱4,4’との軸着点301,302で均衡している為、静止摩擦力は小さくても安定した状態を保持する事が出来る。
【0025】
図5は、本発明の実施例の第2の使用例で、主に小型商品やアクセサリーの撮影に用いる形態を示す説明図である。本体1は回転枠2を介する軸着点101,102及び201,202による二次元の動きで、好ましい照射角を設定し、本体1’は連結バー3,3’の軸着点203,204でほぼ90°上向きに回動し、更に延長部403,404’で連結バー3,3’のインサート部分を引き出し固定した状態である。被写体は、本体1’の上方にガラス板等を介して置き、上下の本体1,1’からの照射角や光量をアジャストしながら撮影する。
【0026】
図6は、本発明の実施例の第3の使用例で,展示品や子供達など横に広がって居る様な被写体の撮影に用いる形態を示す説明図である。+連結バー3,3’をやや水平にし、軸着点201と対応する軸着点202及び軸着点203と対応する軸着点204で回転枠2,2’を約90°回動し、更に軸着点101、102及び103、104において、それぞれ本体1,1’を大く回動した例を示している。尚連結バー3,3’の延長部401,403は必要に応じ、それぞれ対応する延長部402、404と共にインサートを同じ長さだけ引き出している
【0027】
図7は、本発明の実施例の電気回路を示す説明図で、601は電源コード、701はメインスイチ付き調光器(ライトコントローラ)、603は負荷出力線、604はインバータ器具(蛍光灯を含む、本体1を示す)、605はインバータ器具(蛍光灯を含む、本体1’を示す)、606は個別電源スイチ、607は調光信号出力線、608は調光信号ON/OFFスイチである。
【0028】
電源の電圧はAC100V, 周波数は 50,60Hz共用、容量は本体一台当たり348W、計696Wで、電流約7Aは家庭でも充分使える容量である、尚調光信号は10V,50,000Hzである。
【0029】
【発明の効果】
以上の説明で明らかなように、本発明による請求項1 ̄3に記載の撮影用ユニバーサルライティング装置は、近年開発された高輝度、高能率の高周波点灯式ツインパラレル蛍光灯を光源とし、これを必要数(96W,4本)組み込んだ本体2台を1組とし、更に前記本体を個別に照射角の設定が、ワンタッチで出来る様にしたのでその効果は、ストロボに代わる撮影用照明器として、光量を確保し、蛍光灯による面光源を得る事が出来、更に陰影やトーンの設定が容易に成った事で、モデル側も強烈なフラッシュを何回も浴びる事が無く、特に子供の場合は自然な表情が掴み易く成り、撮影作業の能率を飛躍的に向上させる事が出来た。
更に、今後業務用としての利用が益々積極的になる、デジタルカメラとは相性が良く、最適なライティング装置である。
【0030】
【図面の簡単な説明】
【図1】本発明の実施例の全体構成を示す正面説明図である。
【図2】本発明の実施例の全体構成を示す側面説明図である。
【図3】(A),(B),(C) 本発明の軸着点の実施例を示す構造断面図である。
【図4】本発明の実施例の代表的な第1の使用例を示す説明図である。
【図5】本発明の実施例の第2の使用例で主に小型商品の撮影に用いる形態を示す説明図である。
【図6】本発明の実施例の第3の使用例で展示品など横に広い被写体の撮影に用いる形態を示す説明図である。
【図7】本発明の実施例の電気回路を示す説明図である。
【0031】
【符号の説明】
1、1’ 照明器本体
2、2’ 回転枠
3、3’ 連結バー
4、4’ 支柱
5、 架台
6、 キャスター
101,102,103,104, 201,202,203,204, 301,302 軸着点
401,402,403,404、 延長部
410 ロックビス
501,502、 ジョイント部
120、240 ドライメタル
130、250 パイプ
140、260、320 パッキン
150 本体補強材
160,270,350 平ワッシャ
180、220 ナット
170、230,340 スプリングワッシャ
330 ノブ
601 電源コード
602 中継コード
603、 負荷出力線
604、 インバータ器具(本体1)
605、 インバータ器具(本体1’)
606、 個別電源スイチ
607、 調光信号出力線
608 調光信号ON/OFFスイチ
701 メインスイチと調光器
702 分電盤
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lighting device for photographing for facilitating photographing and video photographing.
[0002]
[Prior art]
In the past, simple and convenient strobes were mainly used for shooting in studios that do not rely on natural light.However, since strobe light is a powerful point light source, strong shadows are likely to occur due to large differences in contrast, and He used umbrellas, various diffusers, and reflectors to express the texture and tones of the lighting. Also, every time the position of the light source or the amount of light is changed, it is necessary to measure the steady light and the strobe light everywhere with a flash meter or the like, and it is necessary to emit light each time.
On the other hand, when shooting with a combination of multiple light sources, or with transparent objects such as bottles, glasses, accessories, etc., shooting is performed not only with reflected light but also with transmitted light alone or with transmitted light, and proper exposure is performed. It became more difficult to ascertain the value, and in many cases, test photography was often performed with a polo ride camera or the like.
Further, the strobe light emitter charges electricity to a capacitor and discharges it instantaneously. However, it is necessary to charge immediately after the discharge. For business use, at least 1 KWs, usually 2 to 3 KWs is used simultaneously and intermittently, so a large-capacity power supply equipment that can withstand peaks is required.
Further, digital cameras, which have made remarkable progress in recent years, are more likely to have overexposure and underexposure due to the characteristics of an image sensor than conventional silver halide films, that is, it is difficult to express gradation in a high-luminance, low-illuminance portion. . Therefore, the stroboscopic light was diffused (diffused) or bounced (reflected) to reduce strong shadows and reproduce the gradation of the highlight portion, but this was not the best.
In the illuminator mechanism, there was an illuminator that can swing freely, but each virtual rotation axis matches the center of gravity of the illuminator body, and the two illuminator bodies balance gravity with each other. There was nothing linked to it. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP-A-7-65623 (page 2-3, FIG. 8)
[Problems to be solved by the invention]
In view of the above circumstances, the present invention has been considered in order to use shooting light used when natural light is not available or inconvenient, or inconvenient, in an effective and efficient manner.
(1) To provide a lighting device for photography that produces a softer feeling by using a surface light source without creating an extreme shadow on a subject, and that can easily grasp the situation.
(2) To provide a mechanism capable of freely setting the position and angle of the light source so that the object can be efficiently and effectively irradiated.
(3) To provide a mechanism that is naturally balanced and can always maintain a stable state so that it does not fall even if the position or angle of the illuminator body is changed.
(4) To change the position and angle of the illuminator body quickly and smoothly.
[0004]
[Means for Solving the Problems]
The universal lighting device for photography according to the present invention which has solved the above-described problems,
A rotating frame is provided on the outer periphery of the illuminator body incorporating the fluorescent lamp with an interval provided therebetween, and the illuminator body is rotatably mounted on the rotating frame at an axially symmetrical point of the outer periphery, The rotary frame is rotatably mounted on a pivot point at one end of a connection bar circumscribing at two points on a virtual rotation axis orthogonal to the virtual rotation axis of the illuminator body, and the other end of the connection bar. At the shaft attachment point, a rotating frame incorporating the illuminator body attached thereto is axially attached at an interval that does not interfere with the rotating frame, and the two connecting bars are further provided at a shaft attachment point at the center thereof. The apparatus is a device that is rotatably mounted on a circumscribing column, and the column is fixed to a gantry that has casters and holds the whole.
[0005]
In addition, a virtual rotation axis passing through an axis attachment point of the rotating frame holding the illuminator body and a virtual rotation axis passing through the axis attachment point of the rotation frame and the connecting bar intersect each other, and the intersection point is the illuminator body. The illuminator main body, which is also configured to overlap the center of gravity of the illuminator, also intersects the virtual rotation axis passing through the axis attachment point with the rotation frame and the virtual rotation axis passing through the axis attachment point of the rotation frame and the connection bar. However, by configuring the intersection point to overlap the center of gravity of the illuminator body provided side by side, each illuminator body can always be kept in a stable state.
[0006]
Furthermore, at the shaft attachment points provided on each of the illuminator body, the rotating frame, the connecting bar, and the support of the above-mentioned universal lighting device for photography, the static friction force can be adjusted by tightening the packing so that the illumination is performed. Adjustment of the position and angle of the container main body can be performed quickly and smoothly.
[0007]
[Action]
The present invention provides a set of two illuminators using a fluorescent lamp as described above, and a position and a swing angle can be freely set. A continuous surface light source can be obtained, soft shadows can be created continuously, and the two illuminator bodies can be used to quickly and efficiently set each position and angle efficiently. As it is now possible, you can check the appearance of shadows and neutral colors directly with the viewfinder of the camera, and you can shoot reliably, without the need for special experience or intuition, extremely high efficiency shooting work I can do it.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the drawings as examples.
FIG. 1 is an explanatory front view showing the overall configuration of an embodiment of the present invention, in which reference numerals 1 and 1 ′ denote an illuminator main body (hereinafter referred to as a main body) equipped with a fluorescent lamp, and reference numerals 2 and 2 ′ denote main bodies 1 and 1. , 3 and 3 ′ are held via shaft attachment points 101, 102 and 103, 104, which are rotatably connected to each other. The connecting bars 202, 203, and 204 are connected to each other. 4, 4 'are supporting columns that support the connecting bars 3, 3' at substantially central shaft attachment points 301, 302. 5 is a column having casters 6, and 4 and 4 '. 'Is a gantry that holds the whole through.
[0009]
In this embodiment, fluorescent lamps are used for the illuminator main bodies 1 and 1 'in order to continuously obtain soft shadows. However, ordinary fluorescent lamps provide soft and continuous illumination, but lack brightness. Therefore, by adopting a high-frequency twin-parallel fluorescent lamp developed recently, highly efficient and flicker-free illumination (8,600 lm at a rating of 96 W, frequency of 50,000 Hz) was obtained.
[0010]
The main body of the illuminator was equipped with four twin-parallel fluorescent lamps 96W in a casing of about 900 mm square, and provided a reflector for efficiently concentrating the total luminous flux of 34,400 lm on one side. By incorporating two of these in one device and optimally adjusting the position and angle to the object to be illuminated, in the case of one person, an ISO 100 film can be used with an aperture of 8 and a shutter speed of 1/60 sec or more. It became so.
However, for business use, it is desirable to arrange two sets of devices on the left and right and shoot while adjusting the balance with light control.
In the case of a large number of people, the number of devices is increased to cope with the problem.
[0011]
As with luminance, color rendering (the nature of the light source that affects the appearance of color) is an important factor for lighting for photography. In the case of a digital camera, there is no problem since the white balance and color tone can be adjusted by the camera itself or a personal computer before and after shooting, but in the case of a silver halide film, a lamp with good color rendering properties (for example, a color temperature of 5,000K, Ra99, etc.) ), Mixing with another lamp having a complementary color, or adjusting with a lens filter.
[0012]
The illuminance of the illuminated surface is basically adjusted by changing the position and angle of the main unit, but it is possible to perform optimal lighting by selecting a lamp and blinking or using electric dimming together I can come out.
[0013]
The fixing of the position and the setting angle of the main bodies 1 and 1 'is important in synonymous with the fixing of the light amount, and the fixing method may be a combination of unevenness or a fixing disk using an angle setting disk. Although it can come out, it is preferable that it can be operated smoothly and promptly with reliable fixing. For this purpose, unnecessary rotation force is eliminated by first aligning the virtual rotation axis with the center of gravity of the illuminator bodies 1, 1 ', and furthermore, the center of the connecting bars 3, 3' so that the mass of the bodies 1 and 1 'is balanced. Are provided with shaft attachment points 301 and 302 to offset the rotational force and minimize the force required for holding at each shaft attachment point (101, 102, 103, 104, 201, 202, 203, 204, 301, 302). After that, a shaft attachment point having a function of holding and rotating applying static friction and dynamic friction is provided.
[0014]
In this configuration, the entire movement and rotation are performed by the casters 6, and the left and right rotations of the main bodies 1 and 1 'are performed by rotating the main body 1 around the axis attachment points 101 and 102, and the main body 1' In the vertical rotation in which the rotation points 103 and 104 are rotated as virtual axes, the main body 1 rotates with the rotation points 201 and 202 as virtual axes, and the main body 1 ′ rotates with the rotation points 203 and 204 as virtual axes. Move. In addition, the main body 1 and 1 ′ are rotated back and forth about the shaft attachment points 301 and 302 of the connecting bars 3 and 3 ′ as virtual axes. Further, when extending the connection bars 3, 3 ', the inserts (shown by dotted lines) in the members of the connection bars 3, 3' are pulled out by the extensions 401, 402 and 403, 404, and locked by the lock screws 410. Furthermore, each lock screw 410 can be removed and the insert can be separated by pulling out the insert. The extension of the connecting bars 3, 3 'is to correspond to the embodiments 3 and 4 described later, and the separation is performed by lowering the height of the apparatus from about 2.2M to about 1.3M and moving it to another room or the like. And to facilitate storage. Further, in the case of large movement such as transportation, the shaft attachment points (101, 102, 103, 104, 201, 202, 203, 204, 301, 302) and the nuts of the joint portions 501, 502 are removed and disassembled.
The electrical relationship such as a power supply and a light control unit will be described with reference to FIGS.
[0015]
FIG. 2 is an explanatory side view showing the entire structure of the embodiment of the present invention. A gantry 5 supporting the whole and having a moving function supports the connecting bar 3 via a support column 4 and a shaft attachment point 301, and is connected. The bar 3 supports the rotating frame 2 via a shaft attachment point 201. Further, the rotating frame 2 sequentially supports the main body 1 via the shaft attachment point 101. Similarly, the attached main body 1 'also supports the gantry 5, each of which rotates around an axis attachment point as shown by an arrow, and that the gantry 5 can be moved to the front, rear, left and right by the casters 6. This is as described in FIG. Note that the knob 330 is used to loosen the lock (reduce the static friction force) at the shaft attachment point 301, rotate the main body 1, 1 'back and forth, and lock it again at an arbitrary angle.
[0016]
601 is a power cord. A relay cord 602 relays power and a dimming signal from the main body 1 to the main body 1 '. Reference numeral 701 denotes a dimmer with a main switch for turning on / off input power and transmitting a dimming signal. Reference numeral 702 denotes a distribution board which switches the electric circuit of the main body 1 'to ON / OFF of a dimming signal and divides and lights four fluorescent lamps two by two.
[0017]
FIG. 3 is an explanatory diagram illustrating a structural cross section of the rotating unit according to the embodiment of the present invention. First, FIG. 3 (A) is a cross-sectional view of a shaft attachment point 101 where the main body 1 and the rotary frame 2 are mounted, 110 is a penetrating bolt, 120 is dry metal, and 130 is fixed to the rotary frame 2. A cylinder, 140 is a two-piece packing, 150 is a reinforcing material of the main body 1, 160 is a flat washer, 170 is a spring washer, and 180 is a nut. In addition, the main body 1 'is configured similarly to the main body 1.
[0018]
The rotation and holding, that is, the adjustment of the dynamic friction force and the static friction force are performed with the tightening strength of the bolt 110 and the nut 180, and the dry metal 120, the cylinder 130, the rotating frame 2, the packing 140, the reinforcing member 150, the flat washer 160, and the spring washer are used. Using the frictional force between the 170, the rotation is started with an appropriate manual force, and the strength for securely holding when released is obtained. Further, a double nut is used to prevent free rotation of the nut 180 so that the holding strength does not frequently change due to the rotation, that is, the pressure of each contact surface does not change due to the rotation.
[0019]
FIG. 3B is a cross-sectional view of a shaft attachment point 201 where the rotation frame 2 and the connection bar 3 are attached to each other. The structure is such that one end of a bolt 210 is fixed to the rotating frame 2, a two-packing 260 is sandwiched by a cylinder 250 fixed to the connecting bars 3, 3 ′, and the connecting bars 3, 3 ′ are flattened with the dry metal 240. The washer 270 and the spring washer 230 pinch the nut and tighten it with the nut 220. Note that the rotating frame 2 ′ is configured similarly to the rotating frame 2.
[0020]
The operation is the same as that of FIG. 3A described above. By tightening the nut 220, the friction between the packings 260, the packing 260, the rotating frame 2, the connecting bar 3, the dry metal 240, the flat washer 270, and the spring washer 230 is increased. Adjusting the resistance. Since the bolt 210 is fixed to the rotating frame 2, a phase shift between the rotating frame 2 and the connecting bar 3 caused by the rotation appears between the connecting bar 3 and the nut 220, and as a result, the relative displacement between the nut 220 and the bolt 210. When the tightening pressure changes and the frictional force changes, it is inconvenient if the frictional force changes. Therefore, the flanged dry metal 240 is inserted, and a spring washer is mounted on the nut 220 side so that a larger stopping force than the frictional force including the flanged metal is obtained. 230 is used.
[0021]
FIG. 3C is a cross-sectional view of a shaft attachment point 301 where the connection bar 3 and the support column 4 are attached. The configuration is such that one end of a bolt 310 is fixed to the connecting bar 3 and penetrates through the packing 320 between the connecting bar 3 and the support 4. The knob 330 is provided between the support 4 and the spring washer 340 and the flat washer 350. And is engaged with the bolt 310. Incidentally, a shaft attachment point 301 'between the connecting bar 3' and the support 4 'is similarly configured.
[0022]
The operation principle is the same as in FIGS. 3A and 3B described above, but the frictional force is adjusted by tightening the knob 330. The connection bars 3, 3 'and the bolts 310 fixed thereto are rotated. Flat washers 350 are provided on the columns 4, 4' so that the setting of the frictional force is not changed by the rotation. A spring washer 340 having large rotation resistance is arranged on the knob 330 side so that the knob 330 rotates together with the bolt 310. 3A and FIG. 3B, no dry metal was used between the bolt 310 and the columns 4, 4 'because braking was more important than turning.
[0023]
FIG. 4 is an explanatory view showing a first typical use example of the embodiment of the present invention. The main body 1 is slightly protruded forward by the rotation of the connection bars 3 and 3 ′, and the rotation frame 2 is attached to the shaft. This is an example of tilting slightly downward by points 201 and 202, and further swinging slightly to the right with the pivot points 101 and 102 as rotation axes. On the other hand, the main body 1 ′ retreats a little backward in association with the movement of the connecting bars 3 and 3 ′, and shows a state in which the main body 1 ′ is slightly swung to the right with the pivot points 103 and 104 as rotation axes.
[0024]
The center of gravity of the main body 1, 1 'is always on the virtual rotation axis connecting the connecting point 201 of the connecting bar, the corresponding connecting point 202, and the connecting points 203, 204, regardless of the angle at which the main body 1, 1' is swung. Since the mass is balanced at the shaft attachment points 301 and 302 with the columns 4 and 4 ', a stable state can be maintained even if the static friction force is small.
[0025]
FIG. 5 is an explanatory view showing a second example of use of the embodiment of the present invention, which is mainly used for photographing small products and accessories. The main body 1 sets a preferable irradiation angle by two-dimensional movement by the axis attachment points 101, 102 and 201, 202 via the rotating frame 2, and the main body 1 'is set at the axis attachment points 203, 204 of the connecting bars 3, 3'. This is a state in which it is rotated upward by approximately 90 °, and the insert portions of the connecting bars 3, 3 'are pulled out and fixed by the extensions 403, 404'. The subject is placed above the main body 1 'via a glass plate or the like, and is photographed while adjusting the irradiation angles and light amounts from the upper and lower main bodies 1 and 1'.
[0026]
FIG. 6 is an explanatory diagram showing a third example of use of the embodiment of the present invention, which is used for photographing an object such as an exhibit or children that is spreading horizontally. + The connecting bars 3, 3 'are made slightly horizontal, and the rotating frames 2, 2' are rotated about 90 ° at the shaft mounting points 202 and 204 corresponding to the shaft mounting points 201 and 203, Further, an example is shown in which the main bodies 1 and 1 'are largely rotated at the shaft attachment points 101 and 102 and 103 and 104, respectively. The extension portions 401 and 403 of the connecting bars 3 and 3 'extend the insert by the same length as necessary together with the corresponding extension portions 402 and 404.
FIG. 7 is an explanatory diagram showing an electric circuit according to an embodiment of the present invention. Reference numeral 601 denotes a power cord, 701 denotes a dimmer with a main switch (light controller), 603 denotes a load output line, and 604 denotes an inverter device (including a fluorescent lamp). 605, an inverter device (including a fluorescent lamp, indicating the main body 1 '), 606, an individual power switch, 607, a dimming signal output line, and 608, a dimming signal ON / OFF switch.
[0028]
The power source voltage is AC 100V, the frequency is 50 and 60Hz, the capacity is 348W per main body, totaling 696W, and the current of about 7A is enough to be used at home, and the dimming signal is 10V, 50,000Hz.
[0029]
【The invention's effect】
As is clear from the above description, the universal lighting apparatus for photography according to claim 1 of the present invention uses a high-luminance, high-efficiency, high-frequency lighting twin-parallel fluorescent lamp recently developed as a light source. The required number (96W, 4 units) of the two main units are combined into a single unit, and the main unit can be individually set for the irradiation angle with a single touch. By securing the amount of light, it was possible to obtain a surface light source by fluorescent light, and since the setting of shadows and tones was easy, the model side did not take intense flashes many times, especially for children Natural expressions became easier to grasp, and the efficiency of shooting work was dramatically improved.
Furthermore, it is an optimal lighting device that is compatible with digital cameras, which will be increasingly used for business use in the future.
[0030]
[Brief description of the drawings]
FIG. 1 is an explanatory front view showing the overall configuration of an embodiment of the present invention.
FIG. 2 is an explanatory side view showing the entire configuration of the embodiment of the present invention.
FIGS. 3A, 3B, and 3C are structural cross-sectional views showing an embodiment of a shaft attachment point according to the present invention.
FIG. 4 is an explanatory diagram showing a first typical use example of the embodiment of the present invention.
FIG. 5 is an explanatory diagram showing a mode mainly used for photographing a small product in the second use example of the embodiment of the present invention.
FIG. 6 is an explanatory diagram showing a form used for photographing a horizontally wide subject such as an exhibit in a third use example of the embodiment of the present invention.
FIG. 7 is an explanatory diagram showing an electric circuit according to an example of the present invention.
[0031]
[Explanation of symbols]
1, 1 'illuminator body 2, 2' rotating frame 3, 3 'connecting bar 4, 4' support 5, gantry 6, casters 101, 102, 103, 104, 201, 202, 203, 204, 301, 302 axes Landing points 401, 402, 403, 404, extension portions 410, lock screws 501, 502, joint portions 120, 240 dry metal 130, 250 pipes 140, 260, 320 packing 150 body reinforcing members 160, 270, 350 flat washers 180, 220 nuts 170, 230, 340 Spring washer 330 Knob 601 Power cord 602 Relay cord 603, Load output line 604, Inverter equipment (Main body 1)
605, inverter equipment (main unit 1 ')
606, individual power switch 607, dimming signal output line 608 dimming signal ON / OFF switch 701 main switch and dimmer 702 distribution board

Claims (3)

蛍光灯を組み込んだ照明器本体(1)の外周に間隔を持って外設する回転枠(2)を設け、前記照明器本体(1)は外周の上下対称となる軸着点(101,102)で前記回転枠(2)に回動自在に軸着され、前記回転枠(2)は、前記照明器本体(1)の仮想回転軸と直交する仮想回転軸上の2点で外接する連結バー(3,3’)の一端にある軸着点(201,202)に回動自在に軸着され、前記連結バー(3,3’)の他端にある軸着点(203,204)には、併設した照明器本体(1’)を組み込んだ回転枠(2’)を前記回転枠(2)と互いに干渉しない間隔で軸着し、前記2本の連結バー(3,3’)はその中央部にある軸着点(301,302)で、更に外接する支柱(4,4’)と回動自在に軸着され、前記支柱(4,4’)は、キャスター(6)を有し全体を保持する架台(5)に固定されて成ることを特徴とする撮影用ユニバーサルライティング装置。A rotating frame (2) is provided at the outer periphery of the illuminator main body (1) incorporating the fluorescent lamp with a space therebetween, and the illuminator main body (1) has a shaft attachment point (101, 102) vertically symmetrical about the outer periphery. ), The rotation frame (2) is rotatably mounted on a shaft, and the rotation frame (2) is circumscribed at two points on a virtual rotation axis orthogonal to the virtual rotation axis of the illuminator body (1). The pivot point (201, 202) at one end of the bar (3, 3 ') is rotatably pivoted, and the pivot point (203, 204) at the other end of the connecting bar (3, 3'). , A rotating frame (2 ′) incorporating the illuminator body (1 ′) attached thereto is pivotally mounted at an interval that does not interfere with the rotating frame (2), and the two connecting bars (3, 3 ′) Is pivotally attached to a circumscribing support (4, 4 ') at a shaft attachment point (301, 302) at the center thereof, and is connected to the support (4, 4'). ) Is photographic universal lighting apparatus characterized by comprising anchored to the frame (5), which contains the entire a caster (6). 照明器本体(1)を保持する回転枠(2)の軸着点(101,102)を通る仮想回転軸と、前記回転枠(2)と連結バー(3,3’)との軸着点(201,202)を通る仮想回転軸は、互いに交差し、その交点が前記照明器本体(1)の重心と重なる様に構成され、同様に併設した照明器本体(1’)も回転枠(2’)との軸着点(103,104)を通る仮想回転軸と、前記回転枠(2’)と前記連結バー(3,3’)との軸着点(203,204)を通る仮想回転軸は交差し、その交点が併設した前記照明器本体(1’)の重心と重なる様に構成されたことを特徴とする請求項1記載の撮影用ユニバーサルライティング装置。An imaginary rotation axis passing through an axis attachment point (101, 102) of a rotation frame (2) holding the illuminator body (1), and an axis attachment point of the rotation frame (2) and the connecting bar (3, 3 '). The virtual rotation axes passing through (201, 202) intersect with each other, and the intersection is overlapped with the center of gravity of the illuminator main body (1). 2 ′) and a virtual rotation axis passing through an axis (203, 204) between the rotating frame (2 ′) and the connecting bar (3, 3 ′). 2. The universal lighting device for photographing according to claim 1, wherein the rotation axes intersect with each other, and the intersection of the rotation axes overlaps with the center of gravity of the illuminator body (1 '). 照明器本体(1,1’)、回転枠(2,2’)、連結バー(3,3’)及び支柱(4,4’)の各軸着点(101,102,103,104,201,202,203,204,301,302)に於いて、ボルト、ナットによるパッキンの締め付け具合で静止摩擦力を調整出来るようにしたことを特徴とする請求項1又は2記載の撮影用ユニバーサルライティング装置。Axes (101, 102, 103, 104, 201) of illuminator body (1, 1 '), rotating frame (2, 2'), connecting bar (3, 3 ') and support (4, 4'). 3. The universal lighting device according to claim 1, wherein the static frictional force can be adjusted by tightening the packing with bolts and nuts. .
JP2002342345A 2002-11-26 2002-11-26 Universal lighting device for photography Pending JP2004178908A (en)

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JP2010009886A (en) * 2008-06-25 2010-01-14 Panasonic Electric Works Co Ltd Lighting apparatus
JP2010049935A (en) * 2008-08-21 2010-03-04 Panasonic Electric Works Co Ltd Illumination fixture
JP2012069343A (en) * 2010-09-22 2012-04-05 Idec Corp Lighting unit
JP2014137964A (en) * 2013-01-18 2014-07-28 Toshiba Lighting & Technology Corp Luminaire
CN106764944A (en) * 2017-02-17 2017-05-31 马斌 A kind of light of stage equipment box
GB2621999A (en) * 2022-08-30 2024-03-06 Peng cheng lai Light panel swapping mechanism between top and side shot photography

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100715161B1 (en) 2005-07-07 2007-05-07 경원대학교 산학협력단 Photo shoot illumination light box
JP2010009886A (en) * 2008-06-25 2010-01-14 Panasonic Electric Works Co Ltd Lighting apparatus
JP2010049935A (en) * 2008-08-21 2010-03-04 Panasonic Electric Works Co Ltd Illumination fixture
JP2012069343A (en) * 2010-09-22 2012-04-05 Idec Corp Lighting unit
JP2014137964A (en) * 2013-01-18 2014-07-28 Toshiba Lighting & Technology Corp Luminaire
CN106764944A (en) * 2017-02-17 2017-05-31 马斌 A kind of light of stage equipment box
CN106764944B (en) * 2017-02-17 2018-01-30 广州最高灯光设备有限公司 A kind of light of stage equipment box
GB2621999A (en) * 2022-08-30 2024-03-06 Peng cheng lai Light panel swapping mechanism between top and side shot photography

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