JPS5849923A - Electronic shutter for automatic dimming strobe - Google Patents

Abstract

PURPOSE:To prevent the waste of a battery, by switching the exposure to a mechanical constant exposure without connecting the battery to an electronic shutter and connecting the battery only to a flash device when the flash device is used. CONSTITUTION:A changeover switch 22 is switch and connected to the side of a contact (b) to make an electronic switching circuit E for the automatic exposure control unoperated, and a flash device F is made operated. When a release member 11 is depressed, a main capacitor C1 of the flash device F is charged. Power is not supplied to the electronic switching circuit E by the changeover switch 22, and a sector is opened or closed to perform a mechanical constant exposure operation. A movable iron core 14 is moved upward to close a synchronizing switch 23, and a flash discharge tube Xe is ignited by a trigger circuit B to illuminate an object. Thus, since the battery is not connected to the electronic shutter but is connected only to the flash device, the waste of the battery is prevented.

Description

【発明の詳細な説明】 本発明は、閃光装置と共に使用される電子シャッタ付カ
メラに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a camera with an electronic shutter used with a flash device.

最近のカメラは、殆んどが電気的制御による電子シャッ
タを採用し、被写体の明るさに依存して自動的に適正露
出を制御すると共に、閃光装置を内蔵して不充分な明る
さの場合には閃光装置を使って撮影する様になっている
。Most modern cameras use electrically controlled electronic shutters, which automatically control the appropriate exposure depending on the brightness of the subject, and also have a built-in flash device in case the brightness is insufficient. It is now possible to take pictures using a flash device.

然るに、斯種カメラでは電子シャッタと閃光装置とが同
一の電池によって制御されるため、電池の消耗が激しく
特に閃光装置は、着しく電池を消耗するため、電子シャ
ッタを正常に作動し得ないまでに電池電圧が低下する。However, in this type of camera, the electronic shutter and the flash device are controlled by the same battery, so the battery is rapidly consumed, and the flash device in particular consumes the battery rapidly, so that the electronic shutter cannot operate properly. The battery voltage decreases.

本発明は、上記に鑑み閃光装置を使用する場合には電子
シャッタに電池を接続することなく、機械的な一定露出
とし、閃光装置にのみ電池を接続して消耗を防ぐことを
目的とするものである。In view of the above, the present invention aims to provide a constant mechanical exposure without connecting a battery to the electronic shutter when using a flash device, and to prevent battery consumption by connecting the battery only to the flash device. It is.

本発明によれば、単一電池により閃光装置と電子シャッ
タとを制御するカメラにおいて、自然光による自動露出
作動と閃光露出作動とを切換えるモード切換装置と、電
子シャッタを機械的な一定露出に切換える切換手段と、
前記電子シャッタに同調して作動する閃光装置とを備え
、前記モード切換装置を自然光による自動露出作動から
、閃光露出作動へ切換えることにより前記電子シャッタ
を機械的な一定露出で作動させ、閃光装置による撮影を
遂行し、適正な露出を与える状態まで照明された時、閃
光装置の発光を停止するものである。According to the present invention, in a camera that controls a flash device and an electronic shutter using a single battery, there is provided a mode switching device that switches between automatic exposure operation using natural light and flash exposure operation, and a mode switching device that switches the electronic shutter to mechanical constant exposure. means and
and a flash device that operates in synchronization with the electronic shutter, and by switching the mode switching device from an automatic exposure operation using natural light to a flash exposure operation, the electronic shutter is operated with a constant mechanical exposure, and the flash device operates in synchronization with the electronic shutter. The flash device stops emitting light when a photograph is taken and the light is illuminated to a level that provides proper exposure.

以下図示した本発明の一実施例について説明する０図は
シャッタのチャージ状態を示し、１はシャッタ基板で、
１ａは撮影用アパーチユアを示す。An embodiment of the present invention shown below will be explained. Figure 0 shows the charged state of the shutter, 1 is the shutter board,
1a shows the photographing aperture.

２は絞り羽根を着ねるセクターで２枚のうち１枚のみを
示しである。３はセクター開閉レバーでシャッタ基板上
の軸３ａを回転中心とし、立命部３ｈと前記セクター２
の溝に嵌遊するビン５ｃ。2 is the sector in which the aperture blades are attached, and only one of the two blades is shown. Reference numeral 3 denotes a sector opening/closing lever, which rotates around the shaft 3a on the shutter board, and connects the vertical section 3h and the sector 2.
The bottle 5c fits into the groove.

および突起部３ｄを有し、バネ４により左旋性を与えら
れ、セクター２を閉鎖状態に保っている。and a protrusion 3d, and is given levorotation by a spring 4 to keep the sector 2 in a closed state.

５は駆動部材で、長溝５ａ、５ｂを有し、シャッタ基板
１上に植設されたビン５ｃ、５ｄによってガイドされ、
バネ６によって右方向に付勢力を与えられている。また
駆動部材５には、突起部５ｇ、５ｓが形成されていて、
ビン５ｆ、５ｈ。A driving member 5 has long grooves 5a and 5b and is guided by bottles 5c and 5d planted on the shutter substrate 1.
A biasing force is applied to the right by a spring 6. Further, the driving member 5 is formed with protrusions 5g and 5s,
Bins 5f, 5h.

５ノが植設されている。さらに駆動部材５には、ラック
５ｆが形成され、ガバナ装置１６に噛合っている。７は
駆動レバーで、前記駆動部材５上の軸７αを回転中心と
し、カム面７ｂ　、７ｏおよび斜面７ｄが形成され、バ
ネ８によって右旋性を与えられていて、前記駆動部材５
上のビン５ｆによって位置決めされている。９は係止爪
でシャッタ基板１上の軸９αを回転中心とし、前記駆動
部材５の突起部５−を係止している立命部９ｈと腕部９
Ｇを有し、バネ１０により左旋性を与えられている。１
１はレリーズ部材で長溝１１ｇ、１１＆を有し、シャッ
タ基板１上に植設されたビン１１ｇ、１１ｄによりガイ
ドされ、バネ１２により上昇位置で停止している。また
レリーズ部材１１には、ビン１１ｇ、１１／が植設され
ている。１３は連動レバーで、シャッタ基板１上の軸１
３１Ｋを回転中心とし、前記レリーズ部材１１とバネ１
７により連結され、レリーズ部材１１のビン１１！と当
接している１５６およびフォーク部１３６を有する。１
４は電磁装置の可動鉄片で、長溝１４Ｇ、１４ｂを有し
、シャッタ基板１上に植設されたビン１４ｅ、１４ｄに
よりガイドされ、前記連動レバー１３のフォーク部１３
ｃに嵌遊するビン１４−が植設されている。また可動鉄
片１４には前記セクター開閉レバー３の突起部３ｄを規
正するためのカム面１４／と前記駆動レバー７のカム面
７ｃと対向する突起部１４ｔおよび吸着面１４ムが形成
されている。１５は電磁装置の鉄芯でシャッタ基板１に
固定されている。１８は電磁装置のコイルである。5 plants have been planted. Furthermore, a rack 5f is formed on the drive member 5 and meshes with the governor device 16. Reference numeral 7 denotes a drive lever, which rotates around an axis 7α on the drive member 5, has cam surfaces 7b, 7o, and a slope 7d, and is given dextrorotation by a spring 8.
It is positioned by the upper bin 5f. Reference numeral 9 denotes a locking claw that rotates around an axis 9α on the shutter base plate 1, and includes a standing portion 9h and an arm portion 9 that lock the protrusion 5- of the drive member 5.
G, and is given levorotation by a spring 10. 1
A release member 1 has long grooves 11g, 11&, is guided by bottles 11g, 11d planted on the shutter substrate 1, and is stopped at a raised position by a spring 12. Furthermore, bottles 11g and 11/ are implanted in the release member 11. 13 is an interlocking lever, which is connected to the shaft 1 on the shutter board 1.
31K as the center of rotation, the release member 11 and the spring 1
7, and the bottle 11 of the release member 11! 156 and a fork portion 136 in contact with the fork portion 156 . 1
Reference numeral 4 denotes a movable iron piece of an electromagnetic device, which has long grooves 14G and 14b, is guided by pins 14e and 14d planted on the shutter board 1, and is guided by the fork part 13 of the interlocking lever 13.
A bottle 14-, which fits into the hole c, is installed. Further, the movable iron piece 14 is formed with a cam surface 14/ for regulating the projection 3d of the sector opening/closing lever 3, a projection 14t facing the cam surface 7c of the drive lever 7, and a suction surface 14m. Reference numeral 15 is an iron core of an electromagnetic device fixed to the shutter substrate 1. 18 is a coil of an electromagnetic device.

１９は電源スィッチを示し、２０は電子的スイッチング
回路Ｉの起動スイッチを示す。上記スイッチ１９．２０
を含む回路は、広く知られたものであるので詳記しない
。19 indicates a power switch, and 20 indicates an activation switch of the electronic switching circuit I. Above switch 19.20
Since the circuit including the above is widely known, it will not be described in detail.

また、鉄片レバー爪２１は、軸２１ｇによりシャッタ基
板１に回転可能に軸支され、バネ２１６で右旋性を与え
られており、可動鉄片１４の曲部を係止する係止段２１
ｃと、駆動部材５の突起部５（に係合する突起２１ｄと
、ビン５ｊに係合するバネ２１−とを備えている。バネ
２１−は、バネ２１６より強いが、ビン５ｊに係合する
場合のみバネ２１ｂに抗して、鉄片レバー爪２１を軸２
１ａのまわりに左旋回させ、係止段２１６を可動鉄片の
曲部の作動域へ変位させる。Further, the iron piece lever pawl 21 is rotatably supported on the shutter base plate 1 by a shaft 21g, and is given dextrorotation by a spring 216.
c, a protrusion 21d that engages with the protrusion 5 of the drive member 5, and a spring 21- that engages with the bottle 5j.The spring 21- is stronger than the spring 216, but does not engage with the bottle 5j. Only when the iron piece lever pawl 21 is moved against the spring 21b
1a to the left to displace the locking step 216 to the operating range of the curved portion of the movable iron piece.

電池Ｑは、電源スィッチ１９を介して、切換スイッチ２
２が１に接続された場合にはスイッチング回路Ｅに供給
され、ｂに接続された場合には閃光装置７に供給される
。The battery Q is connected to the selector switch 2 via the power switch 19.
When 2 is connected to 1, it is supplied to the switching circuit E, and when connected to b, it is supplied to the flash device 7.

閃光装置１は、昇圧回路Ａ、主コンデンサーＯＫ、閃光
放電管Ｘｓ、）リガー回路Ｂ、シンクロスイッチ２３．
転流コンデンサー０２．抵抗Ｒ９受光素子Ｓを含む発光
停止回路りから成る。The flash device 1 includes a booster circuit A, a main capacitor OK, a flash discharge tube Xs, a rigger circuit B, a synchro switch 23.
Commutation capacitor 02. It consists of a light emission stop circuit including a resistor R9 and a light receiving element S.

シンクロスイッチ２３は、可動鉄片１４の作動終了時に
閉成され、トリガー回路Ｂを起動する。The synchro switch 23 is closed when the movable iron piece 14 finishes operating, and activates the trigger circuit B.

次にその作動方法について、自然光による自動霧出作動
の場合から説明する。Next, the method of operation will be explained, starting from the case of automatic misting operation using natural light.

図の状態からレリーズ部材１１が押し下げられるとレリ
ーズ部材１１の初期作□動で電源スィッチ１９が閉成さ
れ、コイル１８が通電し鉄芯１５が可動鉄片１４を吸引
する。このときレリーズ部材１１のビン１１／が下降す
るのでレリーズ部材１１のビン１１＃が係止爪９の腕部
９ｃを押して係止爪９を右旋させ係止爪９の立向部９ｂ
が駆動部材５の突起部５−の係止を舊除し駆動部材５は
右方向に走行を開始する。この時駆動部材５はガバナ装
置１６によって緩速に走行し駆動部材５のビン５ｋによ
ってスイッチ２ｏを開き、電子的スイッチング回路を起
動させる。この作動に関連して、駆動部材５上の駆動レ
バー７のカム面７ｂが、セクター開閉レバー３の立向ｓ
３ｂを押し、セクター開閉レバー３はバネ４に抗して右
旋しはじめ、セクター２を開かせる。被写体輝度情報に
関連してスイッチング回路が反転し、コイル１８への通
電が断れ、鉄芯１５が消磁するとバネ１７の緊張力が、
連動レバー１５を介して伝えられている可動鉄片１４は
急速に上昇し突起部１４Ｆは駆動レバー７のカム面７ｃ
と当接し駆動レバー７はバネ８に抗して左旋する１＝シ
たがって、駆動レバー７のカム面７ｂは、セクター開閉
レバー３の立向部３ｂの軌跡外に回動するので駆動部材
５のセクター開閉レバー３への駆動力が断れ、セクター
開閉レバー３はバネ４により左旋してセクター２を閉鎖
する。When the release member 11 is pushed down from the state shown in the figure, the power switch 19 is closed by the initial operation of the release member 11, the coil 18 is energized, and the iron core 15 attracts the movable iron piece 14. At this time, since the pin 11/ of the release member 11 is lowered, the pin 11# of the release member 11 pushes the arm portion 9c of the locking pawl 9 and rotates the locking pawl 9 to the right, thereby causing the vertical portion 9b of the locking pawl 9 to rotate.
The protrusion 5- of the drive member 5 is released from the lock, and the drive member 5 starts moving rightward. At this time, the drive member 5 is driven slowly by the governor device 16, and the pin 5k of the drive member 5 opens the switch 2o and activates the electronic switching circuit. In connection with this operation, the cam surface 7b of the drive lever 7 on the drive member 5
3b, the sector opening/closing lever 3 begins to rotate to the right against the spring 4, opening the sector 2. When the switching circuit is reversed in relation to the object brightness information, the current to the coil 18 is cut off, and the iron core 15 is demagnetized, the tension of the spring 17 is
The movable iron piece 14, which is being transmitted via the interlocking lever 15, rapidly rises, and the protrusion 14F touches the cam surface 7c of the drive lever 7.
1 = Therefore, the cam surface 7b of the drive lever 7 rotates out of the trajectory of the vertical portion 3b of the sector opening/closing lever 3, so the drive lever 7 rotates to the left against the spring 8. The driving force to the sector opening/closing lever 3 is cut off, and the sector opening/closing lever 3 is rotated to the left by the spring 4 to close the sector 2.

ここで、可動鉄片１４が上昇位置で停止しているので、
セクター開閉レバー３がバウンド等でセクター２を再び
開く方向にＩＪＪｉｉ動しようとする場合には、セクタ
ー開閉レバー３の突起部３ｄが、７動鉄片１４の面１４
／に当接し、それを妨げる。Here, since the movable iron piece 14 is stopped at the raised position,
When the sector opening/closing lever 3 tries to move in the direction of re-opening the sector 2 due to bounce or the like, the protruding part 3d of the sector opening/closing lever 3 moves against the surface 14 of the seven moving iron pieces 14.
/ comes into contact with and obstructs it.

上記作動において、駆動部材５が右方向へ走行すること
により、ビン５ｊがバネ２１−の押圧を解くので、鉄片
レバー爪２１は、バネ２１ｈにより係止段２１６が可動
鉄片１４の曲部を係止しない位置まで右旋回する。In the above operation, as the driving member 5 moves to the right, the pin 5j releases the pressure of the spring 21-, so the iron piece lever pawl 21 causes the locking stage 216 to lock the curved part of the movable iron piece 14 by the spring 21h. Turn right until you can't stop.

撮影終了にあたって、レリーズ部材１１の押圧を除くと
レリーズ部材１１はバネ１２により上昇する。このとき
レリーズ部材１１のビン１１／によって、連動レバー１
３を左旋させ、それにつれて可動鉄片１４も初期の位置
に復帰する。レリーズ部材１１の上昇停止位置では、ス
イッチ１９が開かれ、シャッタ回路の通電を断つ。At the end of photographing, when the pressure on the release member 11 is removed, the release member 11 is raised by the spring 12. At this time, the interlocking lever 1 is moved by the pin 11/ of the release member 11.
3 is rotated to the left, and the movable iron piece 14 also returns to its initial position. When the release member 11 is at the raised stop position, the switch 19 is opened and the shutter circuit is de-energized.

シャッタを次の撮影のためにチャージする場合、駆動部
材５を、バネ６に抗して左方向へ走行させると、開閉レ
バー３の立向部３ｂに、駆動レバー７の斜面７ｄが係合
して、駆動レバー７を左旋回し、カム面７ｈが立向部３
６を通過した点で、両者は図示状態に戻り、突起部５−
が立向部９６に係止され、図示状態でチャージが完了す
る。When charging the shutter for the next photograph, when the drive member 5 is moved to the left against the spring 6, the slope 7d of the drive lever 7 engages with the vertical portion 3b of the opening/closing lever 3. Then turn the drive lever 7 to the left so that the cam surface 7h is aligned with the vertical part 3.
6, both return to the state shown in the figure, and the protrusion 5-
is locked to the vertical portion 96, and charging is completed in the illustrated state.

次に閃光露出作動の場合について説明すると、先ず切換
スイッチ２２をｂ側に切換接続し、自動露出制御のため
の電子的スイッチング回路Ｉを不作動とし、代って閃光
装置１を作動状態にする。Next, to explain the case of flash exposure operation, first, the selector switch 22 is switched to the b side, the electronic switching circuit I for automatic exposure control is deactivated, and the flash device 1 is activated instead. .

前述の場合と同様に、レリーズ部材１１を押し下げると
、スイッチ１９が閉じ閃光装置１の主コンデンサ−〇、
が充電される。As in the case described above, when the release member 11 is pushed down, the switch 19 closes and the main capacitors of the flash device 1 -
is charged.

切換スイッチ２２により、電子的スイッチング回路ｌに
は通電され゛ず、鉄芯１５は励磁されない。Due to the changeover switch 22, the electronic switching circuit 1 is not energized and the iron core 15 is not energized.

レリーズ部材１１の押し下げにより、バネ１７を介して
連動レバー１３が軸１５ｍのまわりに右旋回し、可動鉄
片１４が鉄芯１５に引着されないので、フォーク部１３
ｅでビン１′４−を携行して、可動鉄片１４の曲部が鉄
片レバー爪２１の係止部２１ｃに係合するまで可動鉄片
１４を上方へ移動し、さらにレリーズ部材１１を押し下
げると、バネ１７がチャージされ、続いてビン１１＃に
より係止爪９を右旋回して、立面部９ｂと突起５−との
係合を解く。When the release member 11 is pressed down, the interlocking lever 13 rotates to the right around the shaft 15m via the spring 17, and the movable iron piece 14 is not attracted to the iron core 15, so the fork part 13
When carrying the bottle 1'4- with e, move the movable iron piece 14 upward until the curved part of the movable iron piece 14 engages with the locking part 21c of the iron piece lever pawl 21, and further push down the release member 11. The spring 17 is charged, and then the locking pawl 9 is turned to the right by the pin 11# to disengage the vertical portion 9b and the protrusion 5-.

駆動部材５は、係止を解かれるとバネ６により右方向へ
走行し、ピン５ｊがバネ２１−の押圧を解くが、鉄片レ
バー爪２１は、すてに係止段２１Ｇに曲部が係止されて
いるので、バネ２１６の力では右旋回できず、可動鉄片
１４を係止する。When the drive member 5 is released, it moves to the right by the spring 6, and the pin 5j releases the pressure from the spring 21-. Since it is stopped, it cannot be turned to the right by the force of the spring 216, and the movable iron piece 14 is stopped.

駆動部材５がさらに右方向へ走行すると、駆動レバー７
のカム面７６が、開閉レバー３の立面部３ｂを携行して
開閉レバー３を軸３ａのまわりに右旋回し、セクター２
を開く。When the drive member 5 moves further to the right, the drive lever 7
The cam surface 76 of the opening/closing lever 3 carries the vertical surface 3b of the opening/closing lever 3 and rotates the opening/closing lever 3 to the right around the shaft 3a.
open.

駆動部材５が、ガバナー１６で遅延されながらセクター
２を開き、一般的な中間程度の露出（例、えば、１Ｆ８
．１／１２５秒）に達すると、突起部５シが突起２１ｄ
を押し、鉄片レバー爪２１を軸２１ａのまわりに右旋回
させる。The drive member 5 opens the sector 2 while being delayed by the governor 16 to provide a typical medium exposure (e.g. 1F8
．． 1/125 seconds), the protrusion 5shi moves to the protrusion 21d.
Press to turn the iron piece lever pawl 21 to the right around the shaft 21a.

鉄片レバー爪２１が右旋回すると、係止段２１６が可動
鉄片１４の曲部の係止を解き、可動鉄片１４は、バネ１
７の力により、溝１４ａ、１４ｂに沿って上方へ移動し
、前述の場合と同様に突起部１４？が、駆動レバー７を
左旋回させ、カム面７ｂと立面部３ｂとの係合を解き、
開閉レバー３は、バネ４により軸３αのまわりに左旋回
して、セクター２を閉じ露出を終了する。When the iron piece lever pawl 21 turns to the right, the locking stage 216 releases the lock on the curved part of the movable iron piece 14, and the movable iron piece 14
7 moves upward along the grooves 14a, 14b, and as in the previous case, the protrusion 14? However, the drive lever 7 is turned to the left to disengage the cam surface 7b and the vertical surface portion 3b,
The opening/closing lever 3 is rotated to the left around the axis 3α by the spring 4 to close the sector 2 and complete the exposure.

なお、可動鉄片１４が上方へ移動した時、シンクロスイ
ッチ２５が閉成されるので、トリガー回路Ｂにより閃光
放電管Ｘｓが点火され被写体が照明される。同時に受光
素子Ｓが被写体の照明状態を発光停止回路りに入力し、
適正露出状態まで照明された時点で閃光放電管Ｘｅの発
光を停止する。Note that when the movable iron piece 14 moves upward, the synchro switch 25 is closed, so the flash discharge tube Xs is ignited by the trigger circuit B, and the subject is illuminated. At the same time, the light receiving element S inputs the illumination state of the subject to the light emission stop circuit,
When the illumination reaches the proper exposure state, the flash discharge tube Xe stops emitting light.

上記放電管Ｘｓの点火および停止は、瞬時に行われるの
で、突起部１４ｆが駆動レバー７のカム面７＆と立面部
３＆との係合を解き、開閉レバー３がセクター２を、閉
じる前に行われる。Since the discharge tube Xs is ignited and stopped instantaneously, the projection 14f disengages the cam surface 7& of the drive lever 7 and the vertical surface 3&, and the opening/closing lever 3 closes the sector 2. It will be done.

上記説明から明らかな如く、本発明によれば、単一電源
電池ｑを用いて電子シャッタと、閃光装置とを作動させ
る構造にした場合においても、閃光装置を使用する場合
には電子シャッタには給電を必要とせず、機械的な一定
露出作動が行われるため、例え閃光装置での電流消耗が
激しくとも、露出作動に影響を与えることがなく、また
シャッタ側の電流消費が全くないので節約にもなり極め
て有益である。As is clear from the above description, according to the present invention, even when the electronic shutter and the flash device are operated using a single power supply battery q, when the flash device is used, the electronic shutter is not required. Since constant exposure operation is performed mechanically without the need for power supply, even if the flash device consumes a lot of current, it will not affect the exposure operation, and there is no current consumption on the shutter side, so you can save money. It is also extremely beneficial.

また、閃光装置アを使用した場合においても、撮影距離
に応じて照明時間が調整されるタイプ、または実施例の
如く受光素子により照明が停止されるタイプ喀の閃光装
置を用いて常に適正露光の撮影が行われ、更にこれらの
タイプの閃光装置は撮影距離に応じて消費電流も調整さ
れ、特に近距離の場合には消耗が少くなり、本発明の目
的と一致するものである。In addition, even when using a flash device, it is possible to always maintain proper exposure using a flash device of the type that adjusts the illumination time depending on the shooting distance, or the type that stops the illumination by a light receiving element as in the example. In addition, these types of flash devices adjust their current consumption according to the shooting distance, and consume less electricity, especially at short distances, which is consistent with the object of the present invention.

【図面の簡単な説明】[Brief explanation of the drawing]

図は、本発明の電子式プログラムシャッタのチャージ状
態を示す平面図であり、図中、１・・・シャッタ基板 ２　・・・セクター ３・・・セクター開閉レバー ５・・・駆動部材 ７・・・駆動レバー １１・・・レリーズ部材 １３・・・連動レバー １４・・・可動鉄片（鉄片レバー） １５・・・鉄芯 ２１・・・鉄片レバー爪 ２２・・・切換スイッチ である。 以　　上 出願人　　セイコー光機株式会社 代理人　　弁理士　最上　　務The figure is a plan view showing the charging state of the electronic program shutter of the present invention, and in the figure, 1... shutter board 2... sector 3... sector opening/closing lever 5... drive member 7... - Drive lever 11... Release member 13... Interlocking lever 14... Movable iron piece (iron piece lever) 15... Iron core 21... Iron piece lever pawl 22... Changeover switch. Applicant Seiko Koki Co., Ltd. Agent Patent Attorney Tsutomu Mogami

Claims (2)

【特許請求の範囲】[Claims] （１）発光光量を調整可能な閃光装置を備えたカメラ用
電子シャッタにおいて、電子回路により静１される電磁
石が、被写体輝度に応じて自動的に露出を制御する電子
シャッタを、前記電子回路の不作動状態を検出して機械
的な一定露出制御に切換える切換手段と、自然光による
自動露出と閃光による自動露出とを切換えるモード切換
装置と、被写体距離に応じて前記閃光装置の発光光量を
調整するストロボ装置とを備え、前記モード切換装置を
閃光による自動露出に切換えた場合、前記電子回路を不
作動にして前記切換手段により前記電子シャッタを機械
的な一定露出制御に切換え、被写体距離に応じたストロ
ボ装置の発光光量に依存した露出制御を行うことを特徴
とする自動調光ストロボ用電子シャッタ。(1) In an electronic shutter for a camera equipped with a flash device that can adjust the amount of emitted light, an electromagnet that is staticized by an electronic circuit controls the electronic shutter that automatically controls exposure according to the brightness of the subject. a switching means for detecting an inoperative state and switching to mechanical constant exposure control; a mode switching device for switching between automatic exposure using natural light and automatic exposure using flash; and adjusting the amount of light emitted by the flash device according to the subject distance. and a strobe device, when the mode switching device is switched to automatic exposure using flash, the electronic circuit is deactivated and the switching means switches the electronic shutter to mechanical constant exposure control, and the mode switching device switches the electronic shutter to mechanical constant exposure control according to the subject distance. An electronic shutter for an automatic light control strobe that performs exposure control depending on the amount of light emitted by a strobe device. （２）　　レリーズ操作により係止が解除されて走行し
作動の途中から露出を開始し、作動終了域で露出を終了
する駆動部材と、前記電磁石により吸着保持され露出の
終結のため作動する鉄片レバーと、前記鉄片レバーが前
記電磁石に吸着保持される位置から僅かに走行した位置
で前記鉄片レバーを係止し、前記駆動部材により前記係
止を解かれる鉄片レバー爪とから成る切換手段を設け、
前記モード切轡装置を閃光による自動露出に切換えた場
合前記電子回路を不作動とし前記鉄片レバーを前記電磁
石から僅かに走行した位置で前記鉄片レバー爪により係
止し、前記駆動部材が露出を開始した後、予め定められ
た時間経過後に前記係止を解き露出を終了することを特
徴とする特許請求の範囲第１項記載の電子シャッタ。(2) A drive member that is released from the lock by the release operation and travels, starts exposure in the middle of the operation, and ends the exposure at the end of operation, and an iron piece lever that is attracted and held by the electromagnet and operates to terminate the exposure. and an iron lever claw that locks the iron lever at a position slightly traveled from the position where the iron lever is attracted and held by the electromagnet, and is released from the lock by the driving member,
When the mode switching device is switched to automatic exposure using flash light, the electronic circuit is deactivated, the iron piece lever is locked by the iron piece lever claw at a position slightly traveled from the electromagnet, and the driving member starts exposing. 2. The electronic shutter according to claim 1, wherein the lock is released after a predetermined period of time has elapsed, and the exposure is completed.