JP2002351018A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply display the completion of the preparation of photographing with strobe light. SOLUTION: When a main operation member 2 is moved to a photographing position, a light guide 10 is turned to a projecting position where its one end 10a projects on the upper part of a unit main body, and a photographic window 5 is opened. When the light guide 10 is at the projecting position, a stroboscopic switch 17 is turned on to start charging in a stroboscopic device. A winding detection switch turned on in response to the completion of winding by one frame is connected to a light emitting diode 18 emitting light when the charging completed in series. When winding by one frame is completed and the charging is completed, the light emitting diode 18 emits the light, which is projected to the outside through the light guide 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens having a built-in flash device.

[0002]

2. Description of the Related Art Various types of lens-equipped film units in which an unexposed photographic film is pre-loaded in a unit body in which various simple photographing mechanisms such as a photographing lens and a shutter device are incorporated are sold. Some of the lens-equipped film units have a built-in strobe device so that photographing can be performed at night or indoors.

When taking a picture with a film unit with a lens, the take-up knob is rotated prior to taking a picture to wind up the photographic film by one frame. When the winding of one frame is completed, the winding knob is locked, and further rotation operation cannot be performed. The photographer can know that the winding of one frame of the photo film is completed by locking the winding knob.

A strobe device is composed of a main capacitor, a circuit for charging the main capacitor, a strobe discharge tube for discharging the charged main capacitor to emit strobe light, and the like. It is necessary to charge the main capacitor to a specified charging voltage by turning on the charging switch. In the strobe device built in the film unit with a lens, a light emitting diode or a neon tube that emits light when the main capacitor is charged to a specified charging voltage is provided.
This informs that strobe light emission has become possible.

[0005]

By the way, when performing flash photography, it is necessary to complete the winding of the photographic film and to complete the charging of the main capacitor. Therefore, the photographer must confirm that the winding of the photographic film has been completed and that the charging of the main capacitor has been completed. However, whether or not the winding of the photographic film has been completed cannot be determined only by looking at the film unit with the lens. Therefore, it is necessary to rotate the winding knob to check whether the operation is possible or not, and also to check the completion of charging.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a built-in strobe device with a built-in strobe device which makes it possible to easily determine whether or not preparation for strobe shooting has been completed. It is an object to provide a film unit.

[0007]

In order to solve the above-mentioned problem, according to the first aspect of the present invention, the photo film is turned on in response to completion of winding of one frame of the photographic film by the film winding operation member. Winding detection switch,
When the charging of the main capacitor is completed and the wind-up detection switch is turned on, a light is emitted and display means is provided for external display.

According to the second aspect of the present invention, there is provided a main operation member movable between a photographing position and a non-photographing position, and the strobe device is turned on / off in conjunction with the movement of the main operation member. And a switch for charging the main capacitor when the main operation member is set to the photographing position and the charging switch is turned on.

According to the third aspect of the present invention, the display means includes a projecting position where one end emitting light when the charging of the main capacitor is completed and the wind-up detection switch is turned on is projected from the unit main body, and the one end is a unit. It has a display member that is movable between a storage position stored in the main body, and a display position that is movable between a photographing position and a non-photographing position of the main operation member. An interlocking member is provided for moving the display member to a projecting position by moving the main operating member to a photographing position.

In the fourth aspect of the present invention, the display member can be operated to move from the protruding position to the storage position with the main operation member being in the photographing position, and the strobe device is configured such that the display member protrudes to the storage position. A light emission selection switch that is switched between an on state that permits strobe light emission and an off state that prohibits strobe light emission in conjunction with movement between the display member and the light emission selection switch that is turned off by moving the display member to the storage position. Then, the strobe light emission is prohibited.

According to a fifth aspect of the present invention, the display means includes a light emitting element which emits light when charging of the main capacitor is completed and the wind-up detection switch is turned on, wherein the display member comprises a light guide, By being moved to the protruding position, the light from the light emitting element is emitted from one end side with the other end facing the light emitting element arranged in the unit main body.

According to the present invention, the photographing lens can be freely moved between an open position in which the photographing window exposing the photographing lens is opened and a closed position in which the photographing window is closed, and is opened when the main operation member is in the photographing position. A lens cover that is moved to the closed position when the camera is not in the photographing position.

[0013]

1 and 2 show the appearance of a film unit with a lens embodying the present invention. FIG.
2 illustrates a state in which the main operation member 2 is set to the non-shooting position, and FIG. 2 illustrates a state in which the main operation member 2 is set to the shooting position.

The film unit with a lens includes a unit body 3 and an exterior body 4 that partially covers the unit body 3.
In the unit body 3, various photographing mechanisms are incorporated, and an unexposed film cartridge is loaded in advance. The film unit with a lens has a built-in flash device.

On the front surface of the unit body 3, there are provided a photographing window 5, an object side window 6a of a finder 6, and a strobe light emitting section 7 of a strobe device for irradiating strobe light toward a subject. On the upper surface of the unit body 3, there are provided a main operating member 2, a release button 8, a counter window 9 for displaying the number of remaining frames that can be photographed, and an opening 11 through which one end 10a of the light guide 10 projects. In FIG. 1, a part of a winding knob 12 as a winding operation member for performing a film winding operation is exposed. Further, in the film unit with a lens, a lens cover 13 for opening and closing the photographing window 5 is provided.

The main operating member 2 is slidable between a non-photographing position and a photographing position, and the lens cover 13 and the light guide 10 are interlocked with the main operating member 2, respectively. As shown in FIG. 1, when the main operation member 2 is set to the non-shooting position, the lens cover 13 is set to the closed position, the shooting window 5 is closed, and the light guide 10 is closed.
Is a storage position in which one end 10a is stored in the unit body 3. In this state, the release button 8
Is prohibited, and the photographing cannot be performed.

As shown in FIG. 2, when the main operation member 2 is set at the photographing position, the lens cover 13 moves from the closed position to the open position where the photographing window 5 is opened.
The photographing lens 15 is exposed in the photographing window 5, and the light guide 10 is rotated to a projecting position where one end 10 a of the light guide 10 projects above the unit main body 3. In this state, the pressing operation of the release button 8 is permitted.

The winding knob 12 is rotatable in the direction of arrow A shown in FIGS. 1 and 2 (hereinafter, the film winding direction). When the wind-up knob 12 is rotated, the photo film is wound up and the shutter is charged. The winding knob 12 is locked when the film winding for one frame is completed, so that further rotation operation, that is, film winding cannot be performed. The lock of the winding knob 12 is 1
It is released when the shooting of the frame is completed.

The light guide 10 as a display member of the display means is rotated between the storage position and the protruding position in conjunction with the operation of the main operation member 2 as described above. The light guide 10 includes a strobe switch 17 (see FIG. 5) having a function of a charge switch for turning on / off a charging operation performed prior to strobe light emission and a function of a light emission selection switch for selecting whether or not to use strobe light emission. Linked.

When the light guide 10 is in the stowed position, the strobe switch 17 is turned off, the charging operation is not performed, and the strobe light emission is prohibited. When the light guide 10 is in the protruding position, the strobe switch 17 is turned on to perform a charging operation and allow strobe light emission.

When the light guide 10 is at the protruding position, light from the light emitting diode 18 (see FIG. 5) disposed in the unit main body 3 receives one end 1 of the light guide 10.
The light emitted from the light-emitting diode 18a is displayed on the outside of the lens-fitted film unit. As will be described later, the light emitting diode 18 emits light when charging for strobe light emission is completed and film winding is completed. Thus, the photographer can confirm that the charging is completed by the light emission of the one end 10a of the light guide 10 at the protruding position, and that the film winding is completed.

The light guide 10 includes a main operating member 2
When is set to the photographing position, by pressing one end 10a, it can be rotated to the storage position. As described above, the strobe switch 17 is turned on / off according to the turning position of the light guide 10, and thus the main operation member 2 is set to the photographing position,
If the photographing is performed with the light guide 10 in the storage position, the photographing can be performed without emitting the strobe light.

FIG. 3 shows a schematic configuration of the unit main body 3. In FIG. 3, the light guide 10, the lens cover 13, and the like are omitted. The unit main body 3 is loaded with an IX240 type film cartridge 20 at the time of manufacture. The film cartridge 20 includes a cartridge 21 and a photographic film 22. A cartridge chamber 23 and a film roll chamber 24 are provided inside the unit body 3.
The cartridge 21 is provided in the cartridge chamber 23, and the cartridge 21 is provided in the film roll chamber 24.
Each of the photo films 22 drawn out of the printer and rolled is loaded.

The cartridge chamber 23 and the film roll chamber 2
4, an aperture 25 for defining the exposure screen size on the photographic film 22 is formed, and a dark box 26 for blocking a photographic optical path between the photographic lens 15 and the photographic film 22 is provided on the front side thereof. ing. A shutter device 28 that opens and closes a shutter opening 27 in response to a pressing operation of the release button 8 is disposed between the taking lens 15 and the dark box 26. Further, a shutter device 28 is provided in the dark box 26.
In addition, various parts constituting a shutter mechanism, a film winding mechanism, a film counter mechanism, and the like are assembled.

On the front surface of the film roll chamber 24, there is provided a strobe device 29 in which various components are assembled into a circuit board to form a unit. The strobe light emitting unit 7 is exposed on the front surface of the unit body 3. .

At the upper part of the cartridge chamber 23, the winding knob 12 is rotatably arranged. As shown in FIG. 4, the winding knob 12 has a drive shaft 12 a integrally formed on the lower surface of the winding knob 12.
With the spool 21a. Thus, when the winding knob 12 is rotated in the film winding direction, the photographed film 22 which has been photographed is wound on the spool 21a which rotates in conjunction with this operation.

The photo film 22 is provided with a predetermined number of frames in which the photographing frames 30 are virtually partitioned. In the photo film 22, two perforations 22a and 22b having different sizes are formed along one side edge for one photographing frame 30. Each of the perforations 22 a and 22 b is provided at an end of the photographing frame 30. The photographic film 22 is perforated by the film winding operation of the winding knob 12.
The film frame 30 is wound up one by one from the film roll chamber 24 toward the cartridge chamber 23 so that the photographing frame 30 faces the aperture 25 using b.

The winding knob 12 has a tooth row 12
b is formed, and a check pawl 31 provided inside the unit main body 3 is engaged with the tooth row 12b. The check pawl 31 prevents the winding knob 12 from rotating in a direction opposite to the film winding direction.

The film winding mechanism, the film counter mechanism, and the shutter mechanism include a shutter driving lever 33, a winding lever 34, a winding spring 35, a charge spring 36,
It is composed of a cam member 37, a sprocket 38, a first shaft 39, a second shaft 40, a number display plate 41, a shutter blade 42 and the like.

The first shaft 39 has a number display plate 41, a charge spring 36, and a shutter drive lever 33 in this order from the top.
The winding lever 34 and the winding spring 35 are rotatably attached to the second shaft 40 in this order from above.

The sprocket 38 has large and small teeth 38a,
38b are provided at two rotationally symmetric positions. The set of large and small teeth 38a, 38b is sequentially engaged with a pair of large and small perforations 22a, 22b of the photographic film 22.

The cam member 37 has a two-tooth gear 43, a winding cam 44, a charge cam 45, and a shaft 4
6 are formed integrally. The locking cam 44 has a pair of grooves 44a provided at rotationally symmetric positions.
The shaft portion 46 is engaged with the sprocket 38, and the sprocket 38 rotates following the transfer of the film.
Rotate degrees.

The two-tooth gear 43 is disposed so as to mesh with a tooth row 41a provided on the outer periphery of the number display plate 41, and the cam member 37 rotates by 180 degrees so that the number display plate 41 is rotated.
One step forward. On the upper surface of the number display plate 41, a scale for displaying the number is provided corresponding to the rotation pitch. Since this scale is a remaining number display scale indicating the number of frames that can be photographed at that time, the number of remaining frames can be confirmed by observing this scale through the counter window 9.

The shutter drive lever 33 is rotatable between a charge position and a drive completion position, and is urged by a charge spring 36 toward the drive completion position. The stop lever 34 is rotatable between a stop position and a stop release position, and is urged by a stop spring 35 toward the stop position. The charge cam 45 includes a pair of cams 45a at rotationally symmetric positions. A pair of cams 45
An engagement arm 33a provided on the shutter drive lever 33 is arranged in the rotation trajectory a. When the cam member 37 rotates and the cam 45a presses the engagement arm 33a, the shutter drive lever 33 is rotated toward the charge position against the bias of the charge spring.

The shutter drive lever 33 has an engagement arm 33
a, the rising piece 33b and the kicking arm 3
3c is provided so as to protrude in the radial direction about the first shaft 39. Further, the winding stop lever 34 is provided with a falling piece 34a, a claw portion 34b, a lock claw 34c, and a pressed piece 34d, which protrude radially around the second shaft 40. The lock claw 34c engages with the tooth row 12b when the stop lever 34 is at the stop position, and
2 is locked, and the tooth row 1 is
Retract outside the rotation locus of 2b to release the rotation lock.

A pressing piece 48 is formed integrally with the lock claw 34c. The winding detection switch 49 includes, for example, a pair of contact pieces 49a and 49b.
a and 49 b are arranged in the movement locus of the pressing piece 48. The winding detection switch 49 is connected to the winding stop lever 34.
Is in the unwinding position, the contact piece 49a is pressed by the pressing piece 48 and is elastically deformed and comes into contact with the contact piece 49b to be turned on. When the unwinding position is at, the pressing of the contact piece 49a is released. Because it is off. That is, when the film winding is completed, the winding detection switch 49 is turned on.

When the stop lever 34 is at the stop position, the pawl portion 34b enters the groove 44a of the stop cam 44 and prevents the rotation of the sprocket 38 together with the cam member 37. Further, while the winding stop lever 34 is rotating toward the winding stop position, the falling piece 34a becomes the rising piece 3a.
3b, the shutter drive levers 33 are engaged with each other when they are rotated to the winding stop position and hold the shutter drive lever 33 at the charge position.

On the lower surface of the release button 8, a pressing rod 8a is formed integrally. This pressing rod 8a
When the release button 8 is pressed, the pressed piece 34 d is pressed, and the winding stop lever 34 is rotated toward the winding stop release position. By this rotation, the engagement between the falling piece 34a and the rising piece 33b is released, and the shutter drive lever 33 is instantaneously rotated from the charge position to the drive completion position by the bias of the charge spring 36. During this rotation, the kicking arm 33c kicks off the upper end 42a of the shutter blade 42, so that the shutter blade 42 swings to open the shutter opening 27. Shutter blade 42
After the shutter opening 27 is fully opened, the pull-back spring 5
The shutter is returned to the position where the shutter opening 27 is closed by the bias of 1. Thus, the shutter blades 42 are driven, and the shutter opening 27 is opened and closed.

When the shutter drive lever 33 rotates to the drive completion position, the rising piece 33b enters the rotation locus of the falling piece 34a, and holds the winding stop lever 34 at the winding release position. When the lock stop lever 34 is in the lock release position, the lock claw 34c moves to the tooth row 12b.
And the claw portion 34 b is retracted from the groove 44.
This allows the next film winding operation.

In the film winding operation after the photographing of the last photographing frame is completed, it is necessary to wind the entire photographic film 22 into the cartridge 21 while maintaining the state in which the film wrapping is released. Therefore, a cam 52 is formed on the lower surface of the number display plate 41. This cam 5
When the number display plate 41 rotates to a rotation position where the remaining number is zero in conjunction with the film winding operation, the winding stop lever 3
4 and engages with the rising protrusion 34e, thereby holding the winding stop lever 34 at the winding stop releasing position, and continuing the winding operation.

As shown in FIG. 5, the light guide 10
It has a shape that is bent in a substantially “C” shape. The light guide 10 is attached to the shaft 54, is rotatable between the storage position and the projecting position as described above, and is urged toward the projecting position by the spring 55.

The main operation member 2 is formed integrally with the slide plate 56. The slide plate 56 includes the light guide 10.
A rod 57 extending toward the other end 10b is provided. A long slot 58 is formed in the rod 57 along the direction in which the rod 57 extends, and a guide shaft 59 is inserted through the slot 58. Thereby, the slide plate 56 is slidable between the first position and the second position corresponding to the photographing position and the non-photographing position of the main operation member 2. The elongated hole 58 is provided with minute concave portions 58a and 58b, and the guide shaft 59 is provided with minute convex portions 59a. The convex portion 59a is click-coupled to one of the concave portions 58a and 58b. This prevents the slide plate 56 from easily moving from the first position and the second position.

The end 60 of the rod 57 is connected to the light guide 1
0 enters the movement locus of the other end 10b. Thereby, as shown in FIG. 5, when the main operation member 2 is set to the photographing position, the other end 10 b is brought into contact with the end portion 60 of the slide plate 56 set to the first position by the bias of the spring 55. The light guide 10 rotates to the projecting position. When the main operating member 2 is moved from the photographing position to the non-photographing position, the slide plate 56 is slid from the first position to the second position, and the light guide 10 is pushed by the end portion 60 pressing the other end 10b. It rotates to the storage position against the bias of the spring 55. As described above, the light guide 10 is rotated between the projecting position and the storage position by the movement of the main operation member 2 by the slide plate 56 as an interlocking member.

When the light guide 10 is in the protruding position, it is urged by the spring 55 and the other end 10b is only in contact with the end portion 60. When the light guide 10a is pressed, the light guide 10 rotates from the projecting position to the storage position.

A strobe switch 17 is arranged in the movement locus of the other end 10b of the light guide 10. As the strobe switch 17, for example, a push type switch is used. When the light guide 10 is at the protruding position, it is pressed by the other end 10b to be turned on, and otherwise turned off.

Further, the light guide 10 at the projecting position
The light emitting diode 18 is disposed at a position facing the other end 10b of the light emitting diode. As described above, the light emitting diode 18 emits light when charging for the strobe is completed and film winding is completed. The light emitted from the light emitting diode 18 enters the light guide 10 from the other end 10b, is guided to the one end 10a through the inside, and is emitted.

The lens cover 13 is attached to the shaft 62 so as to be rotatable between a closed position where the photographing window 5 is closed and an open position where the photographing window 5 is opened. A pin 57 a provided on the front surface of the rod 57 is inserted into an engagement hole 13 a provided on the upper part of the lens cover 13. This allows
When the main operation member 2 is moved to the photographing position, the lens cover 1 is moved.
When the main window 2 is moved to the non-imaging position by rotating the main operating member 2 from the closed position to the closed position, the imaging window 5 is closed. Can be

The slide plate 56 is integrally formed with a pressing regulating portion 56a for inhibiting the pressing operation of the release button 8. When the slide plate 56 slides, the pressing regulating portion 56a slides between a pressing prohibiting position inserted below the release button 8 and a pressing allowing position retracted from below the release button 8. When the slide plate 56 is at the second position, the pressing restricting portion 56b is in the pressing prohibiting position, and the release restricting portion 56a
Is supported from below, so that the pressing operation of the release button 8 is prohibited.

When the slide plate 56 is at the first position, the pressing restricting portion 56a is at the pressing allowable position, and the pressing operation of the release button 8 is enabled, so that the photographing can be performed. Note that the pressing control portion 56a is provided with the release button 8
And the winding knob 12 disposed immediately below the pressing knob 12 so that the pressing regulating portion 56a
Therefore, even if the release button 8 is strongly pressed, the release button 8 is not pressed down.

In FIG. 6 showing the circuit configuration of the strobe device 29, the strobe device 29 is roughly composed of a strobe switch 17, a booster circuit 63, a trigger circuit 64, a main capacitor 65, a strobe discharge tube 66, and a battery 67 serving as a power supply. . As the strobe switch 17, a three-contact switch is used. The strobe switch 17 has functions of a charge switch and a light emission selection switch as described above, and is turned on when the light guide 10 is at the protruding position.

The booster circuit 63 includes an oscillation transistor 68,
It comprises an oscillation transformer 69, a rectifying diode 70, and the like. Oscillation transistor 68 and oscillation transformer 69
Is used to charge the main capacitor 65.
A known blocking oscillation circuit for converting a low voltage into a high voltage is constructed.

While the flash switch 17 is on, the booster circuit 63 operates, and the primary current flowing through the primary coil 69a of the oscillation transformer 69 is applied to the oscillation transistor 6
8 to increase or decrease. By increasing or decreasing this primary current,
An AC high voltage is generated in the secondary coil 69b. The rectifying diode 70 rectifies and outputs the alternating current generated in the secondary coil 69b. Main capacitor 65 is charged with the output current from boosting circuit 63.

A strobe discharge tube 66 is connected between the terminals of the main capacitor 65. This strobe discharge tube 66
Are arranged in the strobe light emitting section 7. Trigger electrode 6
When a trigger voltage is applied to 6a, the main capacitor 6a
5 discharges in the strobe discharge tube 66 to emit strobe light.

The trigger circuit 64 includes the trigger capacitor 7
1, a trigger coil 72, a synchro switch 73 and the like. The trigger capacitor 71 is charged with the output current from the booster circuit 63 when the strobe switch 17 is on, similarly to the main capacitor 65. The sync switch 73 is turned on and off in synchronization with the opening and closing of the shutter blades 42.

When the shutter switch 42 is fully opened and the synchro switch 73 is turned on while the strobe switch 17 is on, the charged trigger capacitor 71 is turned on by the trigger coil 72 via the turned on strobe switch 17.
A discharge current to the primary side of When a discharge current flows on the primary side, the trigger coil 72 generates a trigger voltage of, for example, about 4 kV on its secondary side, and applies this to the strobe discharge tube 66 via the trigger electrode 66a. Thus, strobe light emission is performed.

When the flash switch 17 is off,
Even when the synchro switch 73 is turned on, since the discharge path of the trigger capacitor 71 is opened by the strobe switch 17, the trigger capacitor 71 does not discharge, so that no strobe light is emitted.

The light emitting diode 18 as a light emitting element constituting the display means is provided with a tertiary coil 69 of an oscillation transformer 69.
It is connected between the terminals c. This light emitting diode 18
Utilizes the fact that the voltage between the terminals of the tertiary coil 69c increases as the charging voltage of the main capacitor 65 increases during the operation of the booster circuit, and emits light when the main capacitor 65 reaches the specified charging voltage. Has been.
The specified charging voltage is set to a charging voltage of the main capacitor 65, for example, 300V, at which a designed strobe light emission amount can be obtained.

A winding detection switch 49 is connected to the light emitting diode 18 in series. As described above, the winding detection switch 49 is turned on when film winding is completed. Thereby, the light emitting diode 18
Emits light only when the charging of the main capacitor 65 is completed during the operation of the booster circuit 63 and the film winding is completed.

Next, the operation of the above embodiment will be described. When the main operation member 2 is set at the non-photographing position, the slide cover 56 is at the second position, so that the lens cover 13 is at the closed position and the photographing window 5 is closed. Further, at this time, the pressing restricting portion 56b is at the pressing prohibition position, and even if the release button 8 is pressed, the release button 8 is not pressed. Therefore, since the pressing rod 8a of the release button 8 does not rotate the lock lever 34 toward the lock release position, the shutter blade 42 is not opened or closed even if the film winding is completed, and 30 is not wasted. In addition, since the light guide 10 is in the storage position and one end 10a does not protrude above the unit body 3, the photographer can visually confirm that the photographing is not possible.

When photographing, the main operation member 2 is slid to set the photographing position. The sliding movement of the main operation member 2 to the shooting position causes the slide plate 56 to move to the second position.
From the position to the first position. As a result, the lens cover 13 pivots from the closed position to the open position to open the photographing window 5, and the pressing operation of the release button 8 is performed by moving the pressing restricting portion 56a from the pressing prohibiting position to the pressing allowing position. It becomes possible.

Further, with the movement of the slide plate 56 to the first position, the light guide 1 held at the storage position
0 rotates from the storage position to the protruding position by the urging force of the spring 55. Then, when the light guide 10 reaches the protruding position, the strobe switch 17 is
Is pressed and turned on.

When the strobe switch 17 is turned on, the boosting circuit 63 starts operating, and charging of the main capacitor 65 starts. This charging increases the charging voltage of the main capacitor 65. The time required for the charging voltage of the main capacitor 65 to reach the specified charging voltage, that is, the charging time required for completing the charging varies depending on the amount of charge remaining in the main capacitor 65 at the start of charging, but is usually several seconds. . When the strobe switch 17 is turned on, the strobe light emission is allowed.

As described above, when the main operation member 2 is set to the photographing position, the main condenser is charged and, at the same time, the state where the strobe light emission is allowed, that is, the strobe photographing state where the photographing is performed by the strobe light emission is performed.

For example, when film winding has been completed, the shutter drive lever 33 is at the drive completion position, and the stop lever 34 is at the stop position. Therefore, since the winding detection switch 49 is turned on by the pressing piece 48 provided on the winding lever 34, when the main capacitor 65 is charged to the specified charging voltage, the tertiary coil 6 is turned on.
The light emitting diode 18 starts emitting light at the terminal voltage 9c.

On the other hand, when the film winding operation is not completed after the previous photographing, for example, when the film winding is not completed, the shutter driving lever 33 is at the drive completion position, and the winding stop lever 34 is released. In position.
Therefore, the winding detection switch 49 is off. Therefore, even if the main capacitor 65 is charged to the specified charging voltage, the light emitting diode 18 does not emit light.

When the photo film 22 is wound by rotating the winding knob 12, the photo film 22 is wound up by the spool 21a. At this time, the sprocket 38 engages with the perforations 22a and 22b and rotates.
Following this, the cam member 37 rotates.

The rotation of the cam member 37 causes the charge cam 4
5 rotates the shutter drive lever 33 toward the charge position. Then, the unexposed shooting frames are stored in the aperture 25.
Is set, that is, when the winding is completed, the claw portion 34b enters the groove 44a and the stop lever 3
4 rotates to the winding stop position by the urging of the winding spring 35. Due to this rotation, the falling piece 34a enters the rotation locus of the rising piece 33b, and the shutter drive lever 33 is held at the charge position.

When the stop lever 34 is rotated to the stop position, the lock claw 34c engages with the tooth row 12b to lock the rotation operation of the winding knob 12, and one contact piece 49a of the winding detection switch 49 is pressed. It is pressed by the piece 48 and comes into contact with the other contact piece 49b. As a result, the winding detection switch 49 is turned on, and the light emitting diode 18 emits light.

Since the other end 10 b of the light guide 10 at the projecting position is opposed to the light emitting diode 18,
Light from the light emitting diode 18 enters the inside of the light guide 10 from the other end 10b and passes through the inside of the light guide 10.
Injected from a.

As described above, one end 10 of the light guide 10 is
Since a emits light with the light of the light emitting diode 18, the photographer simply looks at the light emission, the main capacitor 65 is charged to the specified charging voltage, and preparation for strobe light emission is completed, and the film is wound up to perform shooting. You can confirm that preparation is completed. Therefore, it is not necessary to rotate the winding knob 12 to confirm that the film winding has been completed, and to confirm whether or not the film can be rotated. In addition, when performing flash photography, it is sometimes necessary to pay attention only to whether or not preparation for flash emission has been completed and to forget to confirm whether or not film winding has been completed. In the unit, there is no such thing.

When performing flash photography, the photographer
After checking through the light emission of the light guide 10 of the light emitting diode 18, check the shooting range by looking through the finder 6, and then press the release button 8 while keeping the light guide 10 in the protruding position without pressing the light guide 10. Take a picture.

When the release button 8 is pressed, the pressed piece 34d is pressed by the pressing rod 8a, so that the stop lever 34 rotates toward the stop position. When the stop lever 34 is rotated toward the stop position, the falling piece 34 a is turned into the rising piece 33.
The shutter drive lever 33 is released from the rotation locus of FIG. Thereby, the shutter drive lever 33
Is rotated from the charge position to the drive completion position by the urging force of the charge spring 36.

While rotating toward the drive completion position, the shutter drive lever 33 kicks off the upper end 42a of the shutter blade 42 disposed behind the taking lens 15 and kicks it off with the arm 33c. The kicked shutter blades 42
The shutter opening 27 is rotated toward the open position where the shutter opening 27 is opened against the urging of the return spring 51, and after the shutter opening 27 is fully opened, the shutter opening 27 is returned to the closed position where the shutter opening 27 is closed. The subject light transmitted through the photographing lens 15 by opening and closing the shutter opening 27 is transmitted to the shutter opening 2.
The light is incident on the photographic film 22 set in the aperture 25 through the.

At the moment when the shutter opening 27 is fully opened, the shutter switch 42 turns on the synchro switch 73. Since the flash switch 17 is turned on, when the synchro switch 73 is turned on, the trigger capacitor 71 charged together with the main capacitor 65 is charged.
Is discharged, and a trigger voltage is applied to the strobe discharge tube 66. Thus, strobe light emission is performed. The strobe light emitted from the strobe light emitting unit 7 is reflected by the subject, and a part of the reflected light enters the photographic film 22 through the photographing lens 15 and the shutter opening 27.

The shutter drive lever 33 has been rotated to the drive completion position after the shutter blade 42 has been kicked off. During the rotation of the shutter blade 42 to the drive completion position after kicking the shutter blade 42, the rising piece 33b enters the rotation locus of the falling piece 34a, so that the shutter driving lever 3
At 3, the stop lever 34 is held at the stop position.
When the wind-up lever 34 is rotated to the wind-up releasing position, the rotation operation of the wind-up knob 12 and the rotation of the sprocket 38 are allowed, and the wind-up detection switch 49 is turned off.

Since the flash switch 17 is turned on, the main capacitor 65 is charged after the flash photography, and the charged voltage rises to reach the specified charging voltage. However, since the winding detection switch 49 is off, the light emitting diode 18 does not emit light.

As described above, when the winding knob 12 is rotated to wind the photographic film 22 by one frame, the shutter drive lever 33 is rotated to the drive completion position and the wind stop lever 34 is rotated to the wind stop position. Will be retained. By the rotation of the winding lever 34 to the winding position, the winding detection switch 49 is turned on, and the light emitting diode 18 emits light. Then, the light from the light emitting diode 18 emits light at one end 10a of the light guide 10, so that the photographer can know that the winding has been completed and the charging for strobe light emission has been completed.

On the other hand, when photographing is performed without flash light emission, the light guide 10 is held at the storage position by pushing down the one end 10a protruding above the unit body 3 against the bias of the spring 55. In this state, the photographing is performed by pressing the release button 8. At this time, the light emitting diode 18 is
If the light guide 10 is moved to the stowed position after confirming the light emission of, it is possible to prevent a mistake that the photographing is not performed even if the release button 8 is pressed, so that a shutter chance is not missed.

When the light guide 10 is in the storage position, the flash switch 17 is turned off, and the booster circuit 63 stops. When the booster circuit 63 stops, the main capacitor 6
Even if 5 is charged to the specified charging voltage, it cannot be observed from the outside, but the light emitting diode 18 is turned off.

When the release button 8 is pressed, the shutter blades 42 open and close the shutter opening 27 and turn on the synchro switch 73 as in the case of flash photography, but the light guide 10 is held in the storage position. Since the strobe switch 17 is turned off, the trigger capacitor 71 does not discharge, so that strobe light is not emitted regardless of whether the main capacitor 65 is charged.

When the photographing is not performed, the main operation member 2 is slid from the photographing position to the non-photographing position. With this operation, the slide plate 56 slides from the first position to the second position. As a result, the light guide 10 rotates from the protruding position to the storage position, and accordingly, the strobe switch 17 is turned off and the booster circuit 63 stops. Further, the lens cover 13 is set to the closed position, and the photographing window 5 is closed. Further, the pressing restricting portion 56a moves to the pressing prohibition position, and the pressing of the release button 8 is prohibited.

In the above-described embodiment, the completion of film winding is detected by turning on / off the winding detection switch in conjunction with the winding stop lever. However, the completion of film winding may be detected by another configuration. In the above embodiment,
Lens cover with slide plate integrated with main operation member,
Although the light guide and the like are moved in conjunction with each other, for example, a configuration in which the main operation member is integrally provided on the lens cover and the light guide and the like are moved in conjunction with the opening and closing of the lens cover by the main operation member may be used. Good. Further, the light of the light emitting diode is emitted to the outside through the light guide 10. For example, the light emitting diode is attached to the tip of a member that is moved between a position protruding from the unit main body and a housed position. There may be. further,
Although the light emitting diode 18 is used as a light emitting element for indicating that the charging of the main capacitor 65 is completed and the film winding is completed, a neon tube, a light bulb, or the like may be used.

[0083]

As described above, according to the film unit with the lens of the present invention, the winding detection switch which is turned on when the winding of one frame of the photographic film is completed, and the charging of the main capacitor of the strobe device. When the winding detection switch has been turned on, the display means for emitting light and displaying it externally is provided. It is possible to confirm that the battery is fully charged and the preparation for strobe light emission has been completed, and that the film has been wound and the preparation for photographing has been completed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a film unit with a lens according to the present invention.

FIG. 2 is a perspective view showing an appearance of a film unit with a lens in a state where a main operation member is in a photographing position.

FIG. 3 is an explanatory diagram illustrating a schematic configuration of a unit main body.

FIG. 4 is an exploded perspective view showing main parts of a winding mechanism and a winding stopping mechanism.

FIG. 5 is an exploded perspective view showing an interlocking mechanism of a main operation member and a light guide lens cover.

FIG. 6 is a circuit diagram showing a circuit of the strobe device.

[Explanation of symbols]

 Reference Signs List 2 Main operation member 3 Unit main body 5 Shooting window 7 Strobe light emitting section 8 Release button 10 Light guide 12 Winding knob 13 Lens cover 17 Strobe switch 18 Light emitting diode 22 Photo film 29 Strobe device 34 Winding lever 49 Winding detection switch 56 Slide plate 65 Main capacitor

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 15/03 G03B 15/03 J 3K098 KL 15/05 15/05 17/02 17/02 17/04 17/04 17/18 17/18 B H05B 41/30 H05B 41/30 C 41/32 41/32 Z F term (reference) 2H053 AA03 AC11 AC16 CA41 2H083 CC05 CC06 CC28 CC37 CC48 2H100 AA61 DD13 2H101 AA01 2H102 AA56 AB13 BB05 CA04 3K098 AA01 AA13 BB20

Claims (6)

[Claims] 1. A film winding operation member for winding up a photographic film by one frame and a main condenser are charged, and the electric charge of the main condenser is discharged by a strobe discharge tube to irradiate a strobe light toward a subject. In a film unit with a lens in which an unexposed photographic film is pre-loaded in a unit main body having a built-in flash device, in response to completion of winding of the photographic film by one frame by the film winding operation member. A film unit with a lens, comprising: a wind-up detection switch that is turned on; and a display unit that emits light when the main-capacitor charging is completed and the wind-up detection switch is turned on and displays the light externally. 2. The electronic device according to claim 1, further comprising a main operation member movable between a photographing position and a non-photographing position, wherein the strobe device includes a charging switch that is turned on and off in conjunction with movement of the main operation member. The film unit with a lens according to claim 1, wherein the main condenser is charged by turning on a charge switch when the main operation member is set to a photographing position. 3. The display means includes: a protruding position in which one end of the main capacitor, which emits light when the main capacitor is completely charged and the windup detection switch is turned on, protrudes from the unit main body; A display member movable between the projecting position and the non-photographing position by moving the display member between the photographing position and the non-photographing position. 3. A film unit with a lens according to claim 1, wherein an interlocking member for moving the display member is provided, and the display member is moved to a protruding position by moving the main operation member to a photographing position. 4. The display device is configured to be operable to move from a protruding position to a storage position with the main operation member being in a photographing position, and the strobe device is provided between the protrusion position of the display member and the storage position. A flash select switch that is switched between an on state that permits strobe light emission and an off state that prohibits strobe light emission in conjunction with the movement of the strobe light. The film unit with a lens according to claim 3, wherein light emission is prohibited. 5. The display means includes a light emitting element which emits light when the main capacitor is completely charged and the winding detection switch is turned on, wherein the display member is constituted by a light guide, and is provided at a projecting position. The lens according to claim 3, wherein the lens is moved so that light from the light emitting element is emitted from the light emitting surface on one end side with the other end facing the light emitting element disposed in the unit main body. With film unit. 6. A non-photographing device which is movable between an open position in which a photographing window exposing a photographing lens is opened and a closed position in which the photographing window is closed, wherein the main operating member is in the open position when the photographing position is in the photographing position. The lens cover according to any one of claims 2 to 5, further comprising a lens cover which is moved to a closed position when in a position.
A film unit with a lens according to the item.