JPH0572607A - Consecutive photographing camera - Google Patents

Abstract

PURPOSE:To emit flash light in accurate timing at the time of consecutive photographing. CONSTITUTION:A shutter plate 18 for executing consecutive photographing by rotation is driven by a stepping motor 21. The motor 21 takes a rotating position corresponding to the number of driving pulses supplied from a driver IC 59. The number of driving pulses is counted by a counter 60. The counted value by the counter 60 is transmitted to a trigger signal generation circuit 66 through an MPU 58 with the rotation of the shutter plate 18. By referring to a timing table 67, the circuit 66 generates a trigger signal every time the number of driving pulses counted by the counter 60 attains timing for totally opening an exposing aperture. Whenever the trigger signal is supplied to a stroboscope control circuit 68 every photographing for respective consecutive photographing image plane, a stroboscopic device 12 emits the light to perform consecutive photographing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous shooting camera capable of sequentially performing exposures at short time intervals by one release operation, and at the time of each exposure, emitting flash light accurately. Is.

[0002]

2. Description of the Related Art When a moving subject is sequentially photographed with a time lag, a photographic image whose movement has stopped can be obtained at each moment of photography. It can be observed as an image, which is very convenient. In order to easily realize such a continuous shooting function, a disk-shaped shutter plate having a slit-shaped opening is rotated so as to cross a plurality of exposure openings horizontally arranged in the film feeding direction. The applicant of the present application has proposed a continuous shooting camera in which exposure is sequentially performed at the moment when the opening of the shutter plate crosses the exposure opening.
No. 326, etc. According to this continuous shooting camera, there is no need to feed the film during the continuous shooting period,
Compared to the method of continuous shooting while feeding the film, it is possible to perform continuous shooting quietly and at high speed.

[0003]

When the continuous shooting camera is to be used indoors, a flash device such as a strobe is required. However, so far, when performing continuous shooting at high speed by rotating the shutter plate, no proposal has been made to accurately obtain a trigger signal for flash emission in accordance with the exposure timing of each continuous shooting frame. In the shooting method using a stroboscope, the shooting timing is determined by the flash firing timing itself, and multiple subject images are multiple-exposed within a single shooting screen. It's essentially different from shooting.

The present invention has been made in consideration of the above circumstances, and a trigger signal for flash emission can be obtained at an appropriate timing when sequentially exposing a plurality of continuous frames by rotating a shutter disk. The purpose of the present invention is to provide a continuous shooting camera.

[0005]

To achieve the above object, the present invention rotates a shutter plate so as to traverse a plurality of exposure openings arranged along the feeding direction of the film, and the openings formed in the shutter plate. Is configured so that exposure is sequentially performed when it crosses the exposure opening, and a trigger signal for flash light emission is generated in synchronization with the rotation of the shutter plate. Further, in the one in which the shutter plate is driven by the stepping motor,
The number of drive pulses supplied to the stepping motor is counted to monitor the rotational position of the stepping motor, and a flash firing trigger signal is sequentially output at each instant when the opening crosses the exposure opening.

[0006]

1 is a diagram showing the appearance of a continuous shooting camera using the present invention.
0, eight photographing lenses 3a to 3h are horizontally arranged and attached to the front surface of the camera body 2, and the optical axes of the respective lenses are parallel to each other. Taking lens 3a-3
d is integrally formed with one lens plate 4 formed of a transparent resin such as acrylic resin, and the photographing lenses 3e to 3h.
Is integrally formed with the other lens plate 5. A winding knob 6 is provided on the back side of the camera body 2 to simultaneously wind the film and set the shutter. Further, on the upper part of the camera body 2, an R / L setting knob 7 for switching the continuous shooting order as necessary, a speed setting knob 8 for changing the continuous shooting speed, and a strobe selection for selecting whether or not to perform stroboscopic shooting. A knob 9 and a shutter button 10 are provided. A hot shoe 13 for mounting the strobe device 12 is further provided on the upper surface of the camera body 2. The strobe device 12 is dedicated to this continuous shooting camera, and when the strobe device 12 is attached to the hot shoe 13, the strobe device 12 is electrically connected to the plurality of contacts 13a provided on the hot shoe 13.

As shown in FIG. 2, a shutter substrate 15 having eight exposure openings 14a to 14h corresponding to the taking lenses 3a to 3h is provided inside the camera body 2. The exposure openings 14a to 14h have the same inner diameter. Shafts 16 and 17 are planted on the shutter substrate 15 at equal distances above and below a straight line connecting the centers of the exposure openings 14a to 14h, and disk-shaped shutter plates 18 and 19 are rotatable. Support. Therefore, from the shaft 16, the exposure opening 14a and the exposure opening 14d
Are equidistant, the exposure openings 14b and 14c are equidistant, the exposure openings 14e and 14h are equidistant, and the exposure openings 14f and 14g are equidistant from the axis 17.

Gears 18a and 19a are formed on the outer peripheries of the shutter plates 18 and 19 and mesh with each other. On the lower part of the front side of the shutter substrate 15, a substrate table 15a is provided.
A printed circuit board 20 is mounted via the, and a stepping motor 21 and electronic parts such as an LSI for controlling the stepping motor 21 are mounted on the printed circuit board 20. The drive gear 21a fixed to the shaft of the stepping motor 21 projects from the hole 15b of the shutter substrate 15 and meshes with the gear 18a of the shutter plate 18. Further, a reflection type photo sensor 22 is attached to the printed board 20, and photoelectrically detects the reflection piece 23 fixed to the shutter plate 18 through the hole 15c of the shutter board 15.

A winding stop release lever 24 for releasing the winding stop of the winding knob 6 immediately after the end of exposure is slidably attached via shafts 15d and 15e to the upper part of the front surface of the shutter substrate 15 and is supported by a spring 24a in the figure. It is urged from right to left. A locking lever 25 that is engaged with the claw portion 24a and stops the unwinding release lever 24 at a predetermined position is biased in the clockwise direction and is attached above the unwinding release lever 24.

Immediately after the end of the exposure, the locking lever 25 is pushed from below to release the locking of the winding stop lever 24.
It is rotatably provided between the shutter substrate 15 and the shutter substrate 15, and is biased in the clockwise and counterclockwise directions by torsion springs 28 and 29, respectively, and normally contacts the stopper and stops at the illustrated position. The lifting levers 26, 27 are also movable in the direction of the rotation axis, and these are the torsion springs 28, 2 described above.
It is pressed toward the shutter substrate 15 side by the urging force of 9 in the axial direction.

The claw portions 26a of the lifting levers 26, 27,
27 a is a circular groove 1 formed in the central portion of the shutter plate 18 by penetrating the inverted V-shaped opening 15 f of the shutter substrate 15.
It is located so as to enter the 8b and sandwich the convex portion 31 from the left and right. The claws 26a and 27a have a tapered surface on the shutter plate 18 side, and when the shutter plate 18 rotates clockwise, the convex portion 31 has a claw 27a at the initial stage of rotation.
Although it is pushed from the inside, it does not rotate because the honey raising lever 27 comes into contact with the stopper and is prevented from rotating in the counterclockwise direction. However, due to the action of the tapered surface of the claw portion 27a, the rattling of the shaft is prevented. It is retracted in the axial direction while tilting. Then, at the end of the clockwise rotation operation of the shutter plate 18, the projection 3
1 presses the claw portion 26a from the outside, and the lifting lever 26
Is rotated in the counterclockwise direction, the end portion 26b of the lifting lever 26 rotates the locking lever 25 in the counterclockwise direction. As a result, the engagement between the locking lever 25 and the claw portion 24b of the unwinding release lever 23 is released, and the unwinding release lever 24 is moved leftward in the drawing by the bias of the spring 24a.

A cam plate 37 is fixed to a shaft 36 of the winding stop knob 6, and a winding stop lever 35 is engaged with and disengaged from a recess 37a of the cam plate 37. The winding stop lever 35 enters the recess 37a and locks the winding knob 6 when the winding operation is completed by operating the winding knob 6. Further, the winding stop release lever 24 has the spring 2
When it is moved to the left by the urging force of 4a, the end portion 24c
Upon receiving the pressing force, it rotates clockwise to release the engagement with the recess 37a. The outer circumference of the winding knob 6 is knurled, and the reverse rotation operation of the winding knob 6 is prohibited by pressing the tip of a leaf spring against this.
A film winding shaft 39 is attached to the center of the shaft 36 via a friction ring 38. A gear 41 is fixed to the lowermost end of the shaft 36, and a gear 42 that meshes with the gear 41,
Sprocket 46 for feeding the film 45 through 43
Is attached.

A gear 47 is integrally fixed to the lower portion of the winding stop cam 37, and meshes with a gear 49 via a gear 48. There is a pin 51 on top of this gear 49.
Is fixed, and the pin 51 presses the end portion 24d of the unwinding release lever 24 by rotating the gear 49,
The unwinding release lever 24 is moved to a position where the claw portion 24b is engaged with the locking lever 25. The gear 49 is rotated once while the winding knob 6 is rotated twice, and the film 45 is fed by two frames (38 mm × 2 = 76 mm) during that time.

The shutter plates 18 and 19 are provided with two slits 18c, 18d, 19b and 19c, respectively. The slits 18c, 18c are the shutter plate 18
It is on the same straight line passing through the center of
b and 19c are on the same straight line passing through the center of the shutter plate 19. The slits 18c, 18d or the slits 19b, 19c are not necessarily the respective shutter plates 18,
It does not have to be on the same straight line from the center of 19, and can be positively shifted in consideration of the timing of photographing.

These slits 18c, 18d, 19
In b and 19c, the slit length (the length of the shutter plate in the radial direction) is not less than the inner diameter of the exposure openings 14a to 14h, and the slit width (the width of the shutter plate in the circumferential direction).
Is also larger than the inner diameter of the exposure openings 14a to 14h. However, the slit widths of the outer slits 18c and 19b and the slit widths of the inner slits 18d and 19c are changed according to the distances from the shafts 11 and 12, respectively.
This is to eliminate the difference in the exposure amount due to the difference between the moving speeds of the outer slits 18c and 19b and the moving speeds of the inner slits 18d and 19c due to the difference in the distance from the rotation center. Also, the slits 18c, 18
Since the slit widths of d, 19b, and 19c are all larger than the inner diameter of the exposure aperture, there is a period in which the exposure apertures 14a to 14h are in the fully open state in the process of rotating the shutter plates 18 and 19.

When the drive gear 21a is rotated, the shutter plates 18 and 19 are simultaneously rotated by the meshing of the gears 18a and 19a. For example, when photographing a subject moving to the right, the shutter plate 18 is rotated counterclockwise and the shutter plate 19 is rotated clockwise. As a result, the slit 18c opens and closes the exposure opening 14a, and then the slit 18d opens and closes the exposure openings 14b and 14c. Then, the exposure opening 14d is sequentially opened and closed by the slit 18c. Similarly, the slits 19b and 19c sequentially open and close the exposure openings 14e, 14f, 14g and 14h. When the film 45 is exposed in this way,
The continuous shooting screens 52a to 52 of 8 frames are included in the screens 45a and 45b for one full frame of the film 45 of 35 mm width.
h is exposed. A diaphragm plate 54 is provided between the lens plates 4 and 5 and the shutter substrate 15, and the lens plates 4 and 5 are attached to the shutter substrate 15 by a pressing frame 55.

FIG. 1 schematically shows the electrical construction of the continuous shooting camera. The driving of the stepping motor 21 that drives the shutter plate 18 is controlled by the MPU 58. The driver IC 59 supplies a drive pulse to the stepping motor 21 in response to a command from the MPU 58, and the stepping motor 21 rotates by a fixed angle for each supply of one drive pulse. Since the shutter plate 18 is directly connected to the stepping motor 21 and rotated, the rotational position of the shutter plate 18 corresponds to the number of drive pulses supplied to the stepping motor 21. The number of drive pulses supplied to the stepping motor 21 is counted by the counter 60, and therefore the count value of the counter 60 corresponds to the rotational position of the shutter plate 18 in a one-to-one correspondence. Further, when one photographing sequence is completed, the count value of the counter 60 is cleared by the reset signal from the MPU 58.

FIG. 3 shows the rotational positions of the shutter plates 18 and 19, and P ₀ is the initial position. When the shutter plate 18 reaches the rotational position P ₁ by driving the stepping motor 21, the slit 18c enters a state where the exposure opening 14a is opened, and the exposure of the continuous shooting screen 52a is started. In this exposure, the slit 18c causes the exposure opening 14a.
End when you finish passing. The stepping motor 21 continues to rotate, and the exposure openings 14b, 14c, 1 are opened by the slits 18d, 18c at the rotational positions P ₂ , P ₃ , P _4.
The exposure through 4d is started. Also, the shutter plate 1
8, the shutter plate 19 is also rotating. When the shutter plate 19 reaches the rotational positions Q ₅ , Q ₆ , Q ₇ , and Q ₈ , the exposure openings 14e, 14f, 14g, 14 are sequentially exposed.
The exposure through h is started. These rotational positions P ₁
Count of the number of drive pulses, i.e. the counter 60 as it passes through to P ₄ and Q ₅ to Q ₈ are always constant for each respective rotational positions.

The MPU 58 is further connected with a release signal generating circuit 62, a continuous shooting interval setting circuit 63, a flash photographing switching circuit 64, and an R / L mode switching circuit 65, and a shutter button 10, a speed setting knob 8, and a flash selection knob. 9
Also, the operation of the R / L setting knob 7 and the set position information are input. The continuous shooting interval setting circuit 63 inputs the pulse interval variable data of the drive pulse supplied to the stepping motor 21 corresponding to the set position of the speed setting knob 8. When the speed setting knob 8 is set to the high speed mode position (index "H"), the stepping motor 21 is supplied with the drive pulse having the narrowest pulse interval, and the shutter plates 18 and 19 rotate at the highest speed, for example, 0. 8 frames are continuously shot in 3 seconds. Also, set the speed setting knob 8 to the middle speed mode position,
0.8 when set to the low speed mode position
8 frames are continuously shot in 1 second and 1.3 seconds. However,
The shutter plates 18 and 19 rotate at the rotational positions P ₁ , P ₂ , P ₃ and P.
_4, the rotational position _{Q 5, Q 6, Q 7} , thereafter reaching Q _8, until exposure through each of the exposure aperture is completed, maintaining the exposure amount of each continuous shooting screen 52a~52h constant Therefore, the stepping motor 21 is driven at a constant speed regardless of the setting position of the speed setting knob 8. That is, the continuous shooting interval setting circuit 63 changes only the continuous shooting interval when performing continuous shooting of 8 frames. Program ROM
In addition to the drive program for the stepping motor 21 described above, 69 stores a series of shooting sequence programs necessary for driving this continuous shooting camera.

The strobe photographing switching circuit 64 inputs to the MPU 58 information as to whether or not photographing is performed with the strobe device 12 according to the set position of the strobe selection knob 9.
When the flash photography is selected, the MPU 58 supplies the count value data of the counter 60 to the trigger signal generation circuit 66. The trigger signal generation circuit 66 refers to the timing table 67 and refers to the slits 18c, 18d, 19b, 19
A trigger signal is input to the strobe control circuit 68 at the timing when c completely opens the exposure openings 14a to 14h, and the strobe device 12 is caused to emit light via the strobe control circuit 68. Therefore, the timing table 67 has slits 18c,
The number of drive pulses when 18d, 19b and 19c fully open the exposure openings 14a to 14h is stored.

FIG. 6 shows an example of the strobe control circuit 68. The booster circuit 70 charges the main capacitor 71 having a large capacity. An insulated gate bipolar transistor (IGBT) 73 is connected in series with the xenon tube 72, and by controlling the IGBT 73 and the thyristor 74 for trigger, strobe light emission control during continuous shooting is performed as shown in FIG. .. That is, when the terminal Y is set to the low level and a gate voltage is applied to the IGBT 73 and a trigger signal is applied to the terminal X to turn on the thyristor 74, the xenon tube 72 emits light, and a high level signal is applied to the terminal Y to turn the IGBT 73 on. The emission of the xenon tube 72 is stopped by turning off. When the gate voltage is applied to the IGBT 73 again immediately after the IGBT 73 is turned off, the xenon tube 72 emits light for the second time by the next trigger signal, and the second light emission can be stopped by cutting off the gate voltage. it can. Therefore, the counter 60
By sequentially controlling the terminals X and Y on the basis of the count value of, the strobe device 12 can be made to emit light at each successive shooting timing.

The operation in the case of performing stroboscopic photography with the continuous shooting camera will be described. For example, when shooting a golf swing of a right-handed person continuously from the top position to the follow-through position, set the R / L setting knob 7 to the index “R”.
To suit. This allows the shutter plate 18 to move to the position shown in FIG.
Drive control of the stepping motor 21 is performed so that the shutter plate 19 is rotated counterclockwise and clockwise.
When the subject starts backswing and reaches the top position, the shutter button 10 is pressed. As a result, the stepping motor 21 starts driving, the shutter plate 18 rotates counterclockwise in FIGS. 2 and 3 via the drive gear 21a, and the shutter plate 19 rotates clockwise in conjunction with this. At the beginning of this rotation, the projection 3 of the shutter plate 18
1 contacts the tapered surface of the claw portion 27a of the honey lifting lever 27, but the honey lifting lever 27 is pushed up in the axial direction and retracts, so that the shutter plate 18 continues to rotate with a slight load. To be done.

By supplying the drive pulse, the shutter plate 18,
19 continues to rotate, and as shown in FIG. 4, when the number of drive pulses supplied to the stepping motor 21 becomes N ₁ , N ₂ , ..., N ₈ , respectively, each shutter plate 18, 19 reaches the rotational positions P ₁ , P ₂ , P ₃ , P ₄ , or the rotational positions Q ₅ , Q ₆ , Q ₇ , Q ₈ , and exposure is started. When the exposure is started, the rotation speeds of the shutter plates 18 and 19 are constant regardless of the setting position of the speed setting knob 8, and the exposure is performed for each exposure time of ΔT. It should be noted that the shutter plates 18 and 19 start rotating from the initial position P ₀ and reach the above-mentioned rotational positions P ₁ , P ₂ , P ₃ , P ₄ and rotational positions Q ₅ , Q ₆ , Q ₇ , Q ₈ . Although the time varies depending on the set position of the speed setting knob 8, the number of drive pulses supplied to the stepping motor 21 is constant.
During the period ΔS in which the exposure openings 14a to 14h are fully opened, the number of drive pulses supplied is N ₁ , N ₂ , ..., N, respectively.
After the number of drive pulses reaches ₈ , a certain number of drive pulses are continuously supplied and then a certain number of drive pulses are further supplied. Then, the numbers N _t1 , N _t2 , N _t3 , ..., N _t8 of the drive pulses corresponding to the start point of the period ΔS are stored in the timing table 67 as the generation timing of the trigger signal. Then, the trigger signal generation circuit 66 monitors the count value of the counter 60 with reference to the timing table 67, and when the count value becomes N _t1 , N _t2 , N _t3 , ..., N _t8 , that is, each Rotational positions P ₁ , P ₂ , P ₃ , P
_{After 4} , Q ₅ , Q ₆ , Q ₇ , and Q ₈ , the trigger signal is generated at the moment when the period ΔS is started.

In this way, the trigger signal is sequentially generated at the timing when the exposure openings 14a to 14h are fully opened, and after the trigger signal is generated, a fixed number of drive pulses are supplied (within the period of ΔS). A high-level pulse is applied to Y, the gate voltage of the IGBT 73 is cut off, and the flash device 12 stops emitting light. As a result, the strobe device 12 emits a constant amount of light when the continuous shooting screens 52a to 52h are photographed, and the continuous shooting screens 52a to 52h have the same exposure amount. As shown in FIG. 7, the gate voltage of the IGBT 73 is raised immediately after stopping the light emission once, and the strobe device 12 is ready to emit light by the next trigger signal.

Further, the slit 1 of the shutter plates 18 and 19
The slit widths of 8c, 18d, 19b, and 19c are narrower than the inner diameters of the exposure openings 14a to 14h, and the exposure opening 1 is exposed at the time of exposure.
When 4a to 14h are not fully opened, it is possible to adjust the light emission amount of the strobe device 12 according to the slit width. Regarding the shutter plates 18 and 19, if the slit widths of the outer slits 18c and 19b are different from the inner slits 18d and 19c, respectively, the strobe device 12 emits the same light when these slits reach the center of the exposure aperture. Even if the light is emitted with the light amount, the same exposure amount is not obtained. In such a case, as shown in FIG. 8, after the wide slits 18d and 19c give a trigger signal at the timing of passing through the center of the exposure aperture to cause the strobe device 12 to emit light, the emission time is shortened. to, cut off early the gate voltage of the IGBT73 as shown at the timing T _a, after the narrow slit 18c, 19b is given a trigger signal to electronic flash device 12 at a timing that passes through the center of the exposure opening, the light emission time So that the gate voltage of the IGBT 73 is cut off at the timing T _b so as to be longer. As a result, it is possible to eliminate the variation in the exposure amount due to the difference in the slit width and to keep the exposure amount of each continuous shooting screen 52a to 52h constant.

Immediately after the exposure opening 14h is opened and closed, the convex portion 31 abuts against and presses against the claw portion 27a of the honey raising lever 27, and twists the honey raising lever 27 against the bias of the spring 29. Rotate clockwise. As a result, the locking lever 25 is pushed up by the end portion 27b of the swivel lifting lever 27, rotated counterclockwise, and disengaged from the claw portion 24b. The winding stop release lever 24 is moved to the gear 49 side by the spring 24a, and the end portion 24c rotates the winding stop lever 35 in the clockwise direction. As a result, the claw portion 35a of the winding stop lever 35 is disengaged from the recess 37a of the winding stop cam 37, and the winding stop of the winding knob 6 is released. When the shutter plates 18 and 19 are rotated 360 ° and returned to the initial position, the photo sensor 21 photoelectrically detects the reflecting piece 23 to detect the shutter plates 18 and 1.
Stop 9 at the initial position. In addition, the strobe selection knob 9
Is set to the strobe off position and photographing is performed, the trigger signal generating circuit 66 is turned off and the strobe device 12 does not operate, and the shutter plates 18 and 19 are rotated to similarly perform continuous shooting. ..

Since the winding stop of the winding knob 6 is released when one continuous shooting is completed in this way, the winding knob 6 is operated in preparation for the next photographing. When the winding knob 6 is rotated, the sprocket 4 is moved through the gears 41, 42, 43.
6 rotates, and the film 45 is fed through the perforations 45c. At the same time, the film winding shaft 3
9 is rotated, and the film 45 is wound around the film winding shaft 39. The film winding speed by the film winding shaft 39 changes depending on the amount of film wound on the film winding shaft 39 and does not match the film feeding amount by the sprocket 46, but this is absorbed by the friction ring 38. You can

On the other hand, the gear 49 rotates counterclockwise via the gears 47 and 48 in association with the winding operation of the winding knob 6, but when the winding knob 6 has been operated only once, the gear 49 is halfway. Only after rotating, the pin 51 is not yet in contact with the end 24d of the unwinding lever 24. Therefore, the winding stop lever 35 maintains the state of being rotated clockwise by the end 24c, the claw portion 35a does not enter the recess 37a of the winding stop cam 37, and the rotation of the winding knob 6 is not blocked. When the winding knob 6 is continuously rotated, the pin 51 presses the end portion 24d to start moving the winding stop lever 24 to the right in the drawing. As a result, the winding stop lever 35, which has been prevented from rotating counterclockwise by the end portion 24c, rotates in the counterclockwise direction, and the claw portion 35a comes into contact with the circumferential end surface of the winding stop cam 37. .. Further, the claw portion 24b engages with the locking lever 25, and the unwinding release lever 24 is locked at the position moved to the right. When the winding knob 6 is further rotated continuously, the claw portion 35a enters the recess 37a of the winding stop cam 37 and the winding knob 6 is locked when the winding knob 6 is rotated exactly twice. At the same time, the film 45 is fed for two frames, and the preparation for the next shooting is completed.

Since the panorama print service is currently provided for each frame of a 35 mm full-size screen, continuous print pictures of four frames can be obtained from the continuous shooting screens 52a to 52h, and two panorama print pictures can be obtained. Thus, a continuous shooting screen of 8 frames can be obtained. Further, when a subject whose movement direction is leftward is to be continuously shot, such as a golf swing of a left-handed player, the R / L setting knob 7 is set to the index “L” and shooting is performed. This allows
A drive pulse of opposite polarity is supplied to the stepping motor 21, so that the shutter plate 18 rotates clockwise and the shutter plate 19 rotates counterclockwise. Immediately after the rotation starts, the convex portion 31 of the shutter plate 18 comes into contact with the tapered surface of the claw portion 27a of the honey raising lever 27, but the honey raising lever 27 is retracted in the axial direction, and the shutter plates 18 and 19 continue as they are. And then rotated. As a result, the exposure openings 14h, 14g, ...
.., 14a are sequentially shot, and continuous shooting screens 52h, 52 are displayed.
Shooting is performed in the order of g, 52f, ..., 52a.

Immediately after the exposure of the final continuous shooting screen 52a, the convex portion 3 is formed.
Since 1 presses the claw portion 26a of the honey raising lever 26 to rotate the honey raising lever 26, the locking lever 25 is pushed up by the end portion 26b of the honey raising lever 26, and the claw portion 24b of the unwinding release lever 24. Get out of. by this,
The winding stop release lever 24 is moved to the gear 49 side, and the end 2
4c rotates the winding stop lever 35 clockwise,
The claw portion 35a of the winding stop lever 35 is disengaged from the recess 37a of the winding stop cam 37, and the winding knob 6 is unlocked.
Also, during this time, the shutter plates 18 and 19 return to the initial positions. In the two print photographs taken in this way, the frames are arranged in order from the right side with the passage of time, and it is possible to reproduce a continuous shooting scene that is easy to see in accordance with the movement direction of the left-handed player. Since the shooting interval can be changed only by adjusting the rotation speed of the stepping motor 21, it is considered that the motion speed becomes slow at the beginning and the end of the motion, for example, after the continuous shooting screen 52a is shot, continuous shooting is performed. It is also possible to set a long time interval until the screen 52b is photographed and a time interval after the continuous shooting screen 52g is photographed and then the continuous shooting screen 52h is photographed.

The above embodiment utilizes the fact that the rotations of the shutter plates 18 and 19 are completely synchronized with the number of drive pulses supplied to the stepping motor 21, and the strobe device 12 is controlled based on the number of drive pulses. Although a trigger signal for emitting light is generated, as shown in FIG. 9, projections 60a to 60h are formed on the shutter plate 18, and these projections 60a to 60h form a switch S _T for trigger signal generation. It is also possible to have a configuration to turn on. Of course, the timing at which these protrusions 60a to 60h turn on the switch S _T is the period ΔS in FIG.
The shutter plate 19 may have a similar configuration. Further, a conducting piece is fixed on the same circumference of one of the shutter plates, and these conducting pieces are used for the period ΔS.
It is also possible to conduct the sliding contact during this period to obtain the trigger signal. Such a configuration is used when the shutter plate is rotated by the charging force of the DC motor or the spring.

Although the present invention has been described above based on the illustrated embodiment, a plurality of main capacitors are used instead of using the strobe device 12 which uses one main capacitor 71 to make the xenon tube 72 emit light a plurality of times. Use these main capacitors sequentially from the xenon tube 72
Alternatively, a discharge current may be supplied to each of the plurality of xenon tubes, or a plurality of xenon tubes may be provided to cause another xenon tube to emit light for each continuous shooting screen. Also, such a strobe device can be built in the camera body. Further, the present invention can be applied to a case in which, for example, eight flash cubes are arranged instead of the strobe device 12 and one flash cube is emitted each time a trigger signal is supplied. Is.
Further, the number of continuous shooting screens and the screen size are not limited to those in the above embodiment.

[0033]

As described above, according to the continuous shooting camera of the present invention, the trigger signal is obtained in synchronization with the rotation of the shutter plate that performs continuous shooting by rotation, so that an accurate timing is obtained during the exposure of each continuous shooting screen. The flash can be fired with.
Further, when the shutter plate is driven by the stepping motor, it is possible to obtain the trigger signal for flash light emission at an appropriate timing while monitoring the number of drive pulses supplied to the stepping motor.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a continuous shooting camera using the present invention.

FIG. 2 is an exploded perspective view showing an outline of a shutter mechanism of a continuous shooting camera using the present invention.

FIG. 3 is a diagram illustrating the operation of a shutter plate.

FIG. 4 is a timing chart showing the relationship between the number of drive pulses supplied to the stepping motor and the rotational position of the shutter plate.

FIG. 5 is a timing chart showing the timing of generation of a trigger signal.

FIG. 6 is a circuit diagram showing a strobe control circuit.

FIG. 7 is a timing chart showing the operation of the strobe control circuit.

FIG. 8 is a timing chart showing another control mode of the strobe control circuit.

FIG. 9 is a schematic diagram showing another configuration example for obtaining a trigger signal.

FIG. 10 is an external view of a continuous shooting camera using the present invention.

[Explanation of symbols]

 2 camera body 12 strobe device 13 hot shoe 18, 19 shutter plate 21 stepping motor 60 counter 66 trigger signal generation circuit 67 timing table 68 strobe control circuit

Claims (2)

[Claims] 1. A plurality of exposure apertures arranged in a straight line along a film feeding direction, and a disc-shaped shutter plate,
An opening formed on the shutter plate to perform exposure across the exposure opening at a predetermined position among the exposure openings by rotation of the shutter plate, and a moment when the opening crosses the exposure opening in synchronization with rotation of the shutter plate. A continuous shooting camera comprising: trigger signal generating means for sequentially outputting a trigger signal for flash emission. 2. A plurality of exposure openings arranged in a straight line along a film feeding direction, and a disc-shaped shutter plate,
An opening formed in this shutter plate for performing exposure across a predetermined position of the exposure openings by rotation of the shutter plate, a stepping motor for driving the shutter plate, and a drive pulse supplied to the stepping motor. And a trigger signal generating means for sequentially outputting a trigger signal for flash light emission at each instant when the opening crosses the exposure opening and monitors the rotational position of the stepping motor. Photo camera.