JP3850011B2 - Film unit with lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a film unit with a lens having a data copying device for optically copying display data such as dates displayed on a data display means onto a photographic film.
[0002]
[Prior art]
A film unit with a lens (hereinafter referred to as a “film unit”) having a simple photographing mechanism in which a film is loaded in advance is manufactured and sold by the present applicant. Various types of film units are sold, and those having various mechanisms have been proposed.
[0003]
As one of them, for example, a device incorporating a data copying device for optically copying display data such as shooting date displayed on a data display means such as liquid crystal onto a film has been proposed. According to this, a shutter member dedicated to data copying is integrally formed on the shutter blade for photographing, and the shutter member opens the optical path of the data copying light, so that data can be transferred to the photographic film.
[0004]
[Problems to be solved by the invention]
However, if an impact or vibration is applied by dropping the film unit or the like, the shutter blades move, and the optical path of the data copying light is opened. As a result, the data imprinting device is activated, and there is a problem that erroneous display data is imprinted on the photographic film.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a lens-fitted photo film unit that can prevent the malfunction of a data copying device caused by dropping or vibration.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the lens-fitted photo film unit of the present invention includes a unit body having a photographing mechanism including a shutter button, a subject light incident aperture and a data imprinted light incident on a front surface of a dark box forming an exposure aperture. With a lens provided with a shutter blade integrally formed with a photographing shutter portion that opens and closes the subject light incident aperture and a data shutter portion that opens and closes the data imprinting light incident aperture. In the film unit, a shutter that is provided independently of the shutter blade and moves from an insertion position where the data copying light is inserted into the optical path to a retreat position where it is retracted from the optical path in response to a shutter button release operation. A member is provided. The shutter member is preferably retracted from the optical path before the data shutter portion opens the data imprinting light incident opening. In addition, the shutter member is configured by a plate-like spring member that is rotatably attached, and a rotation restricting member that restricts the rotation of the shutter member is provided on the rotation path of the shutter member. When one end of the shutter member is pressed by the member in conjunction with the release operation of the shutter button, the rotation of the shutter member is restricted, and by this restriction, the shutter member is elastically deformed and the other end is retracted from the optical path. It is preferable that the insertion position is biased.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The external appearance of the lens-fitted photo film unit 1 of the present invention is shown in FIG. The unit main body 2 is obtained by covering the front and back surfaces of the main body base 3 with a front cover 4 and a rear cover 5, and an exposure unit 6 formed at the center of the main body base 3 and a strobe device 7 on the side thereof.
[0008]
A cartridge storage chamber 8 and a film storage chamber 9 are integrally formed so as to sandwich the exposure unit 6 and the strobe device 7. In these storage chambers, the cartridge 10 in the manufacturing process of the lens-fitted film unit 1 and the film roll 11a in which the film 11 is drawn out from the cartridge 10 and combined into a roll form are respectively obtained at the time of production of the film unit. Pre-installed.
[0009]
From the front cover 4, the photographing lens 12, the finder lens 13, the strobe light emitting unit 14, and the strobe selection knob 15a are exposed. The front cover 4 has a daylighting window 16, and a part of the light guide member 17 is exposed from the daylighting window 16. A switching knob 44a for switching ON / OFF of a data copying module 38, which will be described later, is exposed below the daylighting window 16, and is slidably attached up and down.
[0010]
The light guide member 17 is made of a plastic mixed with a fluorescent dye, and takes in part of external light and strobe light from the strobe light emitting unit 14 as data copying light. For this reason, the light guide member 17 includes an external light daylighting surface 17 a directed toward the subject through the daylighting window 16, and a strobe light daylighting surface 17 b at a part below the strobe light emitting unit 14.
[0011]
The light guide member 17 includes an external light guide member that guides external light incident from the external light sampling unit 17a to the irradiation unit 17c, and a strobe light guide that guides strobe light incident from the strobe light sampling unit 17b to the irradiation unit 17c. Although it is made as an injection-molded product in which the members are integrated, the external light guide member and the strobe light guide member may be separated as long as the irradiation unit 17c is shared.
[0012]
On the upper surface of the unit body 2, a shutter button 23, a film counter 24, and a light guide 25 for displaying the completion of charging of the strobe are exposed. A finder eyepiece window 26 is formed in the rear cover 5, and bottom covers 27 and 28 that cover the bottom openings of the cartridge storage chamber 8 and the film storage chamber 11 are formed integrally. The bottom cover 27 is opened when the film cartridge 10 in which the film 11 that has been photographed is taken out is taken out. A label seal 29 is attached so as to cover the surface of the unit main body 2. The label seal 29 has a function of protecting the main body and is used to clean the appearance, and a required portion of the label seal 29 is provided with an opening for exposing a portion necessary for a photographing operation to the surface.
[0013]
A winding knob 31 is provided in the upper part of the cartridge storage chamber 8, and a winding shaft formed integrally with the lower surface thereof engages with the spool of the film cartridge 10. By rotating the winding knob 31 for each photographing, the film that has been photographed is wound into the film cartridge 10 by one frame. The shutter mechanism incorporated in the exposure unit 6 is charged for the next shooting in conjunction with the film one frame winding, and when the film one frame feeding is completed, the winding knob 31 is moved by the lock lever incorporated in the exposure unit 6. Is locked.
[0014]
An aperture (not shown) formed in the main body base 3 limits the exposure range for one frame on the front surface of the photographic film sent to the photographing position. A dark box portion 32 protruding in a square tube shape is integrally formed in front of the aperture, and a shutter opening 32a is formed on the front surface thereof.
[0015]
The exposure unit 6 is based on the dark box portion 32, and includes a photographing lens 12, a shutter blade 33, a shutter mechanism including a spring 34, a shutter charge mechanism, a film winding mechanism, a film counter mechanism including a film counter 24, and a harmful light shielding frame 35. Etc., and further holds an objective and an eyepiece constituting the finder 13. In addition to the shutter opening 32a, a data copying opening 32b is formed on the front surface of the dark box part 32, and is opened and closed by a photographing shutter part 33a and a data shutter part 33b integrally formed with the shutter blade 33, respectively.
[0016]
The shutter blade 33 is covered with a shutter cover 37 in which the photographing lens 12 is incorporated, and a data imprinting module 38 for imprinting the photographing date is assembled on the front surface thereof. The data imprinting module 38 includes an IC chip including a clock circuit and a liquid crystal driver, a liquid crystal plate 39 that displays the current date according to a time signal from the clock circuit, and a battery 41. Further, the battery contact piece 42 is attached to the front cover 4, and when the front cover 4 is attached to the main body base 3, the battery contact piece 42 is pressed to come into contact with the battery 41 and the clock circuit, and data is copied. Power supply to the module 38 is started. Therefore, the inspection of the data imprint module 38 and the date setting need to be performed with the front cover 4 attached to the main body base 3.
[0017]
The harmful light shielding frame 35 blocks harmful light that goes out of the exposure range defined by the aperture from the light that has passed through the photographing lens 12. Therefore, the film 11 is exposed only with subject light directed only to the exposure range, and a clear image without flare is obtained.
[0018]
The irradiation unit 17c of the light guide member 17 is located on the front surface of the liquid crystal plate 39 of the data copying module 38, and the external light collected from the external light collection unit 17a of the light guide member 17 and the strobe light collection unit 17b. The collected strobe light is guided to the irradiation unit 17 c by diffusion and reflection inside the light guide member 17, and irradiated to the liquid crystal plate 39 to become data imprinting light.
[0019]
As a result, when the shooting location is bright and the amount of external light is large, it is possible to obtain a sufficient amount of light as data imprinting light only with the external light collected from the external light sampling unit 17a. On the other hand, when the shooting location is dark and the amount of external light collected from the external light sampling unit 17a is small, a part of the flash light is collected from the strobe light sampling unit 17b by the strobe light to ensure a sufficient amount of light. Is done.
[0020]
Further, a shutter member 43 and a changeover switch 44 are provided in front of the data copying module 38. As shown in FIG. 4, the shutter member 43 is composed of a protrusion 43a, a mounting portion 43b, a blade portion 43c, and stopper portions 43d and 43e, and is formed of a thin metal plate having a spring property. The attachment portion 43b is attached to a shaft 37a provided on the shutter cover 37, and is swingable between a position where the blade portion 43c is inserted on the optical path of the data copying light and a position where it is retracted from the optical path. Has been.
[0021]
Further, a locking lever 40 is formed on the shutter button 23, and the protrusion 43a is locked. When the shutter button 23 is pressed, the protrusion 43a is pressed by the locking lever 40, and the shutter member 43 is rotated clockwise toward the retracted position where the shutter is retracted from the optical path of the data copying light.
[0022]
Further, the shutter cover 37 is provided with a stopper member 37b, and the data copying module 38 is provided with a stopper pin 38a. When the shutter member 43 is rotated in the clockwise direction, the blade portion 43c is retracted from the optical path of the data recording light, and the stopper portion 43e is brought into contact with the stopper member 37b to be elastically deformed, so that the shutter member 43 is counterclockwise. Biased in the direction. At this time, since the stopper portion 43d abuts against the stopper pin 38a, the blade portion 43c retreats from the optical path of the data copying light while the attachment portion 43b is elastically deformed. When the release of the shutter button 23 is released, the shutter member 43 returns to the insertion position where the shutter member 43 is inserted on the optical path of the data copying light by its restoring force. Since the protrusion 43a presses the locking lever 40 in the left direction in the drawing by the restoring force of the shutter member 43, the restoring force also serves as an assisting force when the shutter button 23 returns to the original position.
[0023]
Further, even if vibration or impact is applied to the lens-fitted photo film unit 1, the stopper portion 43e contacts the stopper member 37b, so that the shutter member 43 does not rotate. Even if the blade portion 43c is retracted from the optical path of the data imprinting light, the stopper portion 43d comes into contact with the stopper pin 38a, and the blade portion 43c immediately returns to the original position by its reflection force. Inadvertent copying of data to the film 11 is not performed.
[0024]
Further, when the shutter release is performed, after the shutter member 43 opens the optical path of the data recording light, the shutter blade 33 is kicked by a kick lever (not shown) and rotates in the clockwise direction in the drawing. As a result, the data shutter section 33b is retracted from the optical path of the data imprinting light, the data imprinting opening 32b is opened, and the data imprinting light is incident on the film 11 to perform data imprinting. After the shutter member 43 is retracted from the optical path of the data imprinting light, the shutter blade 33 is rotated to open the optical path of the data imprinting light, so that the data imprinting light is reliably incident on the film 11 and the data. Imprinting is performed.
[0025]
The changeover switch 44 is provided with a changeover knob 44a and a switch window 44b. The switching knob 44a is exposed to the outside from the front cover 4, and the photographer slides up and down between an ON position where the switching knob 44a is set upward and an OFF position where the switching knob 44a is set downward, and the data copying module 38 Switch ON / OFF. When the switching knob 44a is set to the ON position, the switch window 44b is inserted on the optical path of the data imprinting light, and the liquid crystal plate 39 can be irradiated with the data imprinting light. When the switching knob 44a is set to the OFF position, the switch window 44b is retracted from the optical path of the data imprinting light, and the data imprinting light is blocked by the window frame 44c. This makes it impossible to irradiate the liquid crystal plate 39 with data imprinting light, and thus imprinting data becomes impossible.
[0026]
The strobe device 7 has a circuit board 45 serving as a base and a circuit component such as a capacitor and an oscillation transformer constituting a charging unit, a power supply battery 46, and a strobe light emitting unit 14. In addition, the receiving plate 47 is supported by pins protruding to the front side of the circuit board 45. The receiving plate 47 slidably holds the switch plate 15 in which the strobe selection knob 15a is integrally provided.
[0027]
When the strobe selection knob 15a provided on the front cover 4 is slid upward, the switch plate 15 rises, the switch contact piece 49 comes into contact, and strobe charging is started. Further, when the switch plate 15 is raised, the light guide 25 is raised via an arm integrally provided at the upper end of the switch plate 15 and protrudes from the unit body 2. When the charging is completed, the charging completion display lamp is turned on, and the tip of the light guide 25 shines brightly to display the charging completion to the photographer and the subject. A sync switch 48 provided on the circuit board 45 is for obtaining a trigger signal for strobe light emission, and is turned on when the shutter blade 33 is opened to apply to the discharge tube to emit strobe light.
[0028]
FIG. 5 schematically shows the imaging optical section of the present embodiment. As described above, the dark box portion 32 provided in the exposure unit 6 is formed with the data copying opening 32b, and the liquid crystal plate 39 of the data copying module 38 is positioned so as to cover the opening 32b. Then, by opening and closing the shutter blades 33 and the shutter member 43, the data light 55 passing through the liquid crystal plate 39 using the light emitted from the irradiation unit 17c as preparation light for obtaining data is incorporated into the opening 32b and the harmful light shielding frame 35. After passing through the imaging lens 50 for data transfer, the image is formed on the data imaging area 52 in the exposure range 51 on the film 11. At the same time, the photographing light 54 incident from the photographing lens 12 through the aperture opening 53 also enters the dark box portion 32 from the photographing opening 32a by opening and closing the shutter blade 33, passes through the harmful light shielding frame 35, and Imaging is performed by forming an image within the exposure range 51 of the film 11.
[0029]
The operation of the above embodiment will be described. As shown in FIG. 4A, when the shutter button 23 is not depressed, the stopper member 37b is provided, so that the shutter member 43 does not rotate, and the blade portion 43c is assumed to be data. Even when retracted from the optical path of the imprinted light, the stopper portion 43d and the stopper pin 38a come into contact with each other, and the blade portion 43c immediately returns to its original position by its reflection power. As a result, the shutter member 43 opens the liquid crystal plate 39 even if the shutter blade 33 swings due to an impact or vibration applied to the lens-fitted photo film unit 1 while the changeover switch knob 44a is set to the ON position. Therefore, the imprint data module 38 does not operate and inadvertent data imprinting on the film 11 is not performed.
[0030]
In order to perform further data copying in shooting in a bright shooting place such as in the daytime or in a bright room, the switch knob 44a is set to the ON position. Then, the winding knob 31 is rotated to feed the film one frame and the shutter is charged, and then the shutter button 23 is pressed. As shown in FIG. 4B, when the shutter button 23 is pressed, first, the shutter member 43 is rotated clockwise in the drawing, and is elastically deformed by the contact between the stopper member 37b and the stopper pin 38a. The optical path of the data imprinting light is opened. Thereby, the external light collected from the external light sampling unit 17a of the light guide member 17 exposed on the front surface of the front cover 4 is guided to the liquid crystal plate 39 through the irradiation unit 17c.
[0031]
Thereafter, as shown in FIG. 4C, the shutter mechanism incorporated in the exposure unit 6 is operated to open and close the shutter blades 33, and the data imprinted light that has passed through the liquid crystal plate 39 passes through the data imprint opening 32b. Incident. Further, photographing light from a subject incident from the photographing lens 12 is incident from the shutter opening 32a, and one photographing is performed. When the shutter button 23 is released, the shutter blade 33 closes the shutter opening 32a, and the shutter member 43 is inserted into the optical path of the data copying light. Note that when the shooting location is bright, a large amount of external light is collected from the external light sampling unit 17a, so that a sufficient amount of data can be obtained. When data copying is not performed, the switching knob 44a may be set to the off position.
[0032]
When the shooting location is dark, it is normal to perform flash shooting. When performing strobe shooting, the strobe selection knob 15a is slid upward to start strobe charging. The photographer confirms the completion of charging with the light guide 25 and presses the shutter button 23. As a result, the shutter blade 33 and the stopper member 43 are opened and closed in the same manner as described above, and the photographing light and the data imprinting light enter the dark box portion 32. Also, at the moment when the shutter blade 33 is opened, the synchro switch 48 is instantaneously turned on and a trigger signal is sent to the strobe circuit, which is applied to the discharge tube and strobe light is emitted.
[0033]
During strobe photography, external light is guided from the external light collecting unit 17a to the irradiation unit 17c. On the other hand, the strobe light irradiated on the strobe light collecting unit 17b is also guided to the irradiation unit 17c. Both of these lights become data imprinting lights.
[0034]
By repeating the above operation, all the films 11 stored in the unit main body 2 are photographed. The lens-fitted photo film unit 1 for which all the frames of the film 11 have been photographed is subjected to simultaneous printing at a developing dealer, collected at a developing station, and developed and printed. The developed film 11 and the printed photo are returned to the user, and the lens-fitted photo film unit 1 is collected from the developing station and recycled.
[0035]
In the above embodiment, the shutter member 43 is formed of a thin metal plate having a spring property, but may be formed of plastic or the like. Further, the shutter button 23 and the shutter member 43 may be integrally formed.
[0036]
【The invention's effect】
As described above, according to the lens-fitted photo film unit of the present invention, the lens unit is provided independently of the shutter blade, and is inserted from the insertion position where the data copy light is inserted into the optical path in response to the shutter button release operation. Since the shutter member that moves to the retreat position that retracts from the optical path is provided, the data copying device does not operate carelessly even if strong vibration or impact is applied to the lens-fitted photo film unit.
[0037]
In addition, since the shutter member is retracted from the optical path before the data shutter portion opens the data recording light incident opening, the data recording can be reliably performed.
[0038]
The shutter member is configured by a plate-like spring member that is rotatably attached. A rotation restricting member that restricts the rotation of the shutter member is provided on the rotation path of the shutter member. When one end of the shutter member is pressed in conjunction with the release operation of the shutter button, the rotation of the shutter member is restricted, and by this restriction, the shutter member is elastically deformed and the other end is retracted from the optical path and the insertion is performed. Since it is biased to the position, the shutter button and the shutter member can be interlocked with a simple configuration, and the rotation of the shutter member due to vibration or impact to the lens-fitted photo film unit can be prevented.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a lens-fitted photo film unit embodying the present invention.
FIG. 2 is an exploded perspective view of a lens-fitted photo film unit.
FIG. 3 is a perspective view showing a main part of a data copying device for a lens-fitted photo film unit.
FIG. 4 is an explanatory diagram showing the operation of the shutter member.
FIG. 5 is a perspective view showing a main part of an imaging optical system of a lens-fitted photo film unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Film unit with a lens 2 Unit main body 23 Shutter button 33 Shutter blade 33a Shooting shutter part 33b Data shutter part 37b Stopper member 38 Data imprint module 38a Stopper pin 40 Locking lever 43 Shutter member

Claims (3)

A unit body equipped with a shooting mechanism including a shutter button, and a subject light incident aperture and a data imprinting light incident aperture are provided independently on the front surface of the dark box forming the exposure aperture, and the subject light incident aperture is opened and closed. A lens-fitted photo film unit having a shutter blade integrally formed with a photographing shutter part and a data shutter part for opening and closing a data imprinting light incident opening.
Provided independently of the shutter blades, and provided with a shutter member that moves in response to a release operation of the shutter button from an insertion position where the data imprinted light is inserted into the optical path to a retreat position where the data is retracted from the optical path. A lens-equipped film unit. 2. The lens-fitted photo film unit according to claim 1, wherein the shutter member is retracted from the optical path before the data shutter part opens the data imprinting light incident opening. The shutter member is configured by a plate-like spring member that is rotatably attached, and a rotation restricting member that restricts the rotation of the shutter member is provided on the rotation path of the shutter member. When one end of the shutter member is pressed in conjunction with the release operation of the shutter button, the rotation of the shutter member is restricted. By this restriction, the shutter member is elastically deformed and the other end is retracted from the optical path and the insertion is performed. The film unit with a lens according to claim 1, wherein the film unit is biased to a position.

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