JP3232176B2 - Film unit with lens - Google Patents

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 reduced thickness of a unit body and improved portability.

[0002]

2. Description of the Related Art Recently, the horizontal side of a print is two times longer than the vertical side.
A panoramic camera for creating a wide panoramic print by changing the ratio more than twice as long has been provided. Some panoramic cameras switch the exposure screen between full size and panoramic size even during the shooting of one film, such as “Cardia Mini Everyday OP” (product name) sold by the present applicant. There is something that can be done. Such a camera that can be switched in the middle has a full size of 24 mm x 36 mm (aspect ratio 1.5), which regulates the exposure range for the film in conjunction with the operation of an operation unit provided outside. And an exposure screen switching mechanism for inserting a flat mask from above and below the full size exposure frame and switching the exposure screen to a panoramic size regulated to 13 mm × 36 mm (aspect ratio 2.8). .

The above-described exposure screen switching mechanism is built in a film unit with a lens having a built-in strobe, and
A film unit with a standard / panorama switching type lens (hereinafter, referred to as a "film unit") capable of switching the exposure screen between a full size and a panoramic size even during the shooting of a book film so that the shooting can be performed. −65
No. 522 is proposed. In this film unit, an operation unit for interlocking a flat mask is interposed between a front cover body constituting a front cover and a cover plate fixed to the front surface of the front cover body.

[0004]

However, in the above-described conventional lens-equipped film unit with a built-in strobe, the strobe light-emitting portion is held between the main body and the front cover, and a step-up transformer or a transistor is provided on the front cover side. Since the printed circuit board to which the lead wires of the electrical elements such as are soldered is provided, when the front cover consisting of the front cover body and the cover plate is attached to the main body, the locking claw formed on the cover plate However, there arises a problem that the solder contacts a raised portion of the printed circuit board. When such a problem occurs, the lead wire bent by the locking claw is short-circuited, causing a problem that the strobe does not emit light. For this reason, when the front cover composed of the front cover body and the cover plate is attached to the main body, a space is required, and the thickness of the unit main body is increased, and the portability is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to provide a film unit with a lens in which the thickness of a unit main body is reduced and portability is improved.

[0006]

In order to achieve the above object, in a film unit with a lens according to the present invention, a front cover is constituted by a front cover main body and a cover member fixed to a front surface of the front cover main body. The engaging claws formed on the cover member are fitted into the engaging holes formed on the main body, and when these are attached to the main body, the number of the engaging holes and the engaging claws is reduced.
And a part is located in front of the printed circuit board.
In addition, the locking claw does not hit the soldered portion of the printed circuit board interposed between the main body and the front cover.

[0007]

FIG. 7 shows a lens-equipped film unit in which either a standard photographing mode or a panoramic photographing mode can be selected for photographing. This film unit 2 with a lens is a unit body 3 made of resin.
And a paper box 4 for packaging the same. On the front surface of the unit main body 3, a photographing lens 5, an operation knob operated when switching the photographing mode 6, a finder objective opening 7 for defining a full size field of view having the same aspect ratio as the full size exposure screen, and the finder objective opening 7 A panorama field frame 8, a strobe light emitting section 9, and a charge switch 10 for defining a panorama field of view having the same aspect ratio as the panorama exposure screen inserted into and removed from the inside, a release button 11 on the upper surface, a remaining frame number display window 12, neon A tube lighting display window 13 is provided. Reference numeral 14 denotes a hoist knob. In addition, paper box 4
Is formed with a plurality of openings, and the photographing lens 5 and the like are exposed from each of the openings. Therefore, the film unit 2 with the lens performs photographing with the paper box 4 attached.

The unit main body 3 comprises a main body 15, a rear cover 16 and a front cover 17 shown in FIGS. 2 and 3, the rear cover 16 being on the rear side of the main body 15, and the front cover 17 being on the front side of the main body 15. It is mounted as shown in FIG. Main body 15
A patrone room 19 for accommodating a 135 type patrone 18 and a film room 21 for accommodating an unexposed photographic film 20 drawn out from the patrone 18 are formed on both sides of the patrone.

An exposure unit 22 shown in FIG. 2 is locked to the front of the main body 15 so as to be sandwiched between the patrone chamber 19 and the film chamber 21. The exposure unit 22 incorporates a wrap unit 23 and a two-viewfinder unit 26 including an objective lens 24 and an eyepiece 25 (see FIG. 6). Note that reference numerals 5a and 2
Reference numeral 6a denotes an optical axis of the photographing lens 5 and an optical axis of a finder.

After the exposure unit 22 is assembled, a printed circuit board 30 holding the strobe light-emitting unit 9 is further assembled on the front surface of the film chamber 21. As shown in FIG. 5, the printed board 30 includes a board main body 32 in which many through holes 31 are formed, and a circuit piece 33 printed on the front surface of the board main body 32. As shown in FIG. 2, on the rear side of the printed circuit board 30, there are provided many electric elements such as a main capacitor 34, a resistor 35 (see FIG. 1), a step-up transformer, and a transistor (not shown). Electric contact pieces 38 and 39 that come into contact with both poles of the dry battery 37 are mounted.

The lead wires of many of the above-described electric elements are inserted into the respective through holes 31 and are soldered to the respective circuit pieces 33 at the front side of the substrate main body 32. As shown in FIG. 1, for example, the soldered portion of the circuit piece 33 and the lead wire 35a is in a state where the lead wire 35a of the resistor 35 projects from the through hole 31 and the solder 3 is placed around the lead wire 35a.
3a is excited. For this reason, on the front surface side of the printed circuit board 30, approximately the same number of the lead wires 35 a as the number of the through holes 31 and the protrusion of the solder 33 a are formed.

As shown in FIG. 3, the front cover 17 includes a front cover main body 40 and a cover plate 41 locked to the front surface thereof.
And the panoramic field frame 8 incorporated between them. In the panoramic field frame 8, the operation knob 6,
An opening 43 having an aspect ratio of 1: 2.8, a triangular mark 44 formed on the lower edge of the opening 43, a pair of notches 45 and 46, and a cam plate 47 are integrally formed.

On the front surface of the front cover body 40, a storage space 48 for storing the panoramic view frame 8 slidably in the direction of the arrow, and four engagement members into which the four locking claws 41a of the cover plate 41 are fitted. Stop holes 49a to 49d are formed. When the front cover main body 40 is attached to the main body 15,
Locking holes 49a, 49b among the locking holes 49a to 49d.
The front cover body 40 is located at a position facing the exposure unit 22 and the patrone chamber 19, and the locking holes 49c and 49d are located at positions avoiding the raised portion of the solder 33a of the printed circuit board 30 as shown in FIG. Are located.

At the lower end edge of the storage space 48, a pair of click claws 50,
51 are formed as shown in FIG. Click claw 5
When 0 is inserted into the notch 45, the panorama field frame 8 is moved to the panorama shooting position where the panorama field frame 8 is inserted into the finder objective opening 7.
When the click claw 51 is fitted into the notch 46, the panorama field frame 8 is click-stopped at the normal photographing position retracted outside the finder objective opening 7, respectively.

The cover plate 41 has a finder objective opening 7 and a slot 5 for exposing the operation knob 6 to the outside.
5 have been established. On both sides of the cover plate 41,
The above-mentioned four locking claws 41a to 41d are formed in pairs. After the panoramic view frame 8 is stored in the storage space 48, these locking claws 41 a to 41 d are
a to 49d, the cover plate 41 is nailed to the front cover main body 40, and these are attached to the main body portion 15. At this time, as shown in FIG. 1, the tips of the locking claws 41c and 41d do not abut on the protruding portion of the solder 33a and do not bend the lead wire 35a.

When the operation knob 6 is slid from left to right in the slot 55 in a state where the cover plate 41 is fixed to the front cover body 40, the panoramic field frame 8 is moved from the normal photographing position to the panoramic photographing position and from the right. Slide to the left,
The panoramic field frame 8 moves from the panoramic shooting position to the normal shooting position.

FIG. 6 shows an exposure screen size switching mechanism provided in the exposure unit 22. While the panoramic field frame 8 is being moved from the normal photographing position to the panoramic photographing position, the cam plate 47 presses the intermediate lever 60 provided above the finder unit 26. When the intermediate lever 60 is rotated counterclockwise against the bias of the spring 61 by this pressing, the rotatable crank lever 63 inserted from the side of the exposure chamber 62 into the interior is rotated clockwise. Move.

A rotatable upper light-shielding plate 64 and a lower light-shielding plate 65 are mounted in the exposure chamber 62 via a shaft. The upper light shielding plate 64 has an arm 67 having a pin 66 formed at the tip, and the lower light shielding plate 65 has the pin 6.
Arms 69 with which the abutments 6 abut are provided. Further, a spring 70 for urging the upper light-shielding plate 64 and the lower light-shielding plate 65 in the opening direction is hung on these arms 67 and 69. The spring 70 includes a crank lever 63 and a cam plate 4.
7, the panoramic field frame 8 is urged in a direction to move it to the normal photographing position.

The crank lever 63 is provided on the upper light shielding plate 6.
When the crank lever 63 is rotated clockwise as described above, the upper light shielding plate 64 is moved from the full size position shown in FIG. It moves toward the panoramic position shown in FIG. At the same time, the lower light shielding plate 65 is moved from the full size position to the panorama position via the pin 66.

Note that the upper light-shielding plate 64 is
To prevent light passing through the shutter opening from being reflected internally,
A plurality of light-shielding grooves 7 each having a sawtooth cross section along the film feeding direction.
2 are integrally formed as shown in FIGS.
The lower light-shielding plate 65 has a curved shape along the bottom surface of the exposure chamber 62 in order to reliably prevent flare due to internal reflection, and has a cross-sectional shape in which the edge 73 is L-shaped upward. Has become. As shown in FIG. 4, the edge 73 and the edge 74 of the upper light-shielding plate have the same curved shape as the film supporting surface of the rear cover 16 along the horizontal direction.

Next, the operation of this embodiment will be described. In the assembly line of the factory, first, the patrone room 19 and the film room 2
1, the exposure unit 22 is mounted, and the printed circuit board 30 is mounted.
Is locked on the front side of the film chamber 21. Thereafter, the cover plate 41 is nailed to the front cover body 40, and the front cover 17 with the panoramic view frame 8 interposed therebetween is attached to the body 15
With a nail from the front side. At this time, the locking claws 41c and 41d formed on the cover plate 41 are stored between the raised portions of the solder 33a of the printed circuit board 30, as shown in FIG. For this reason, the front cover 1 can be used without causing a useless gap between the front cover 17 and the printed circuit board 30.
7 is assembled to the main body 15. Thereby, since the thickness of the unit main body 3 does not increase, the portability of the film unit with lens 2 is not impaired. In addition,
This film unit 2 with a lens is a panoramic field frame 8
Is shipped from the factory in the panoramic shooting mode inserted into the finder objective opening 7.

The photographer who has purchased the lens-fitted film unit 2 first performs a film winding operation. A shutter charge is performed in conjunction with the film winding operation, and a release operation of the release button 11 becomes possible.
Preparation for shooting is completed. Here, the photographer selects either the standard shooting mode or the panoramic shooting mode. And
When shooting in the panoramic shooting mode, the release button 11 may be pressed as it is. In addition, when performing photographing in the standard photographing mode, the operation knob 6 at the panoramic photographing position shown in FIG.

By this pressing, the click connection between the notch 46 and the click claw 51 is released, and the panoramic field frame 8 is released.
Moves from right to left in the storage space 48. By this movement, the intermediate lever 60 is released from the pressing of the cam plate 47, and is rotated clockwise in FIG. 6 by the urging of the springs 61 and 70. By the rotation of the intermediate lever 60, the pressing of the intermediate lever 60 is released, and the crank lever 63 is rotated counterclockwise by the bias of the spring 70. When the crank lever 63 is rotated in this manner, the upper light shielding plate 64
The lower light shielding plate 65 rotates in the opening direction by the bias of the spring 70.

When the operation knob 6 is further pressed and the panoramic field frame 8 is moved to the middle of the finder objective opening 7,
The engagement between the intermediate lever 60 and the cam plate 47 is completely released. Accordingly, the intermediate lever 60 is biased by the springs 61 and 70, and the crank lever 63, the upper light-shielding plate 64, and the lower light-shielding plate 65 are moved by the spring 70 in the standard photographing position direction and the full size position direction. Is done.

Thereafter, when the operation knob 6 is further pressed and the panoramic field frame 8 is completely sent out of the finder objective opening 7, the click claw 50 is fitted into the notch 45. Due to this click stop, the panoramic field frame 8 does not enter the finder objective opening 7 thereafter. At this time, the entire panoramic field frame 8 is hidden behind the cover plate 41.

In this state, when the user looks through the eyepiece lens 25, the subject can be observed within the full-size field of view. When the release button 11 is pressed, the subject is displayed on the full-size screen of the film. Thereafter, when performing a new photographing, after performing the film winding operation, the standard photographing mode or the panoramic photographing mode by the operation knob 6 is appropriately selected, the framing is performed, and then the release button 11 is pressed. .

After photographing in the standard photographing mode, when photographing in the panoramic photographing mode, the operation knob 6 is pressed rightward in the slot 55. By this pressing, the click connection between the notch 45 and the click claw 50 is released. When the operation knob 6 is further pressed rightward and slid, the panoramic field frame 8 is inserted into the finder objective opening 7.

When the panoramic field frame 8 is inserted halfway, the cam plate 47 presses the intermediate lever 60 and the upper light shielding plate 64 and the lower light shielding plate 65 via the crank lever 63.
Are turned in the closing direction against the bias of the spring 70. When the operation knob 6 is slid to the panorama shooting position, the panoramic field frame 8 is completely inserted into the finder objective opening 7 and the upper light shielding plate 64 and the lower light shielding plate 65 are moved to the positions shown in FIG.
Is rotated to the panorama position shown in FIG. At this time, the click claw 51 is fitted into the notch 46, so that the panoramic view frame 8 is at the panorama shooting position, and the upper light shielding plate 64 and the lower light shielding plate 65 are not moved unless the operation knob 6 is slid. And the exposure screen size becomes the panorama size.

By looking through the eyepiece lens 25 in the above state, the subject can be observed in the panoramic visual field. When the release button 11 is pressed, the subject is displayed on the panoramic size screen of the film. Thereafter, the photographing is repeated, and when the photographing of all the frames is completed, the film unit with lens 2 may be submitted to the developing laboratory as it is. At the photo lab, the cartridge containing the exposed film is taken out and the photographed film is developed. Note that two types of exposure screen sizes, full size and panorama size, are mixed in this photographed film, so displaying that fact on the patrone simplifies the printing work at the developing laboratory.

[0030]

As described in detail above, in the film unit with lens of the present invention, the front cover is constituted by the front cover main body and the cover member fixed to the front surface of the front cover, and formed on the front cover main body. The locking claw formed on the cover member is fitted into the locking hole, and when these are mounted on the main body, the locking claw is attached to the soldered portion of the printed circuit board interposed between the main body and the front cover. Since the nails are prevented from hitting, the front cover and the printed circuit board can be more closely adhered to each other, so that the unit body can be assembled without increasing the thickness, and the portability of the film unit with the lens is improved. be able to.

[Brief description of the drawings]

FIG. 1 is a diagram showing a positional relationship between a locking claw formed on a cover plate fixed to a front surface of a cover main body and a solder bulging portion of a printed circuit board when the unit main body is assembled.

FIG. 2 is an exploded perspective view showing a main part of the film unit with a lens.

FIG. 3 is an exploded perspective view showing a front cover of the film unit with a lens.

FIG. 4 is a sectional view showing the inside of the unit main body.

FIG. 5 is a front view of a printed circuit board.

FIG. 6 is an exploded perspective view showing an essential part of an exposure screen size switching mechanism.

FIG. 7 is a perspective view showing the appearance of a film unit with a lens.

FIG. 8 is a diagram illustrating a positional relationship between a pair of light shielding plates in a standard photographing mode.

FIG. 9 is a diagram illustrating a positional relationship between a pair of light shielding plates in a panoramic shooting mode.

[Explanation of symbols]

 2 Film unit with lens 3 Unit main body 9 Strobe light emitting part 15 Main body 16 Rear cover 17 Front cover 20 Photo film 30 Printed circuit board 33a Solder 35a Lead wire 40 Front cover main body 41 Cover plate 41a-41d Locking claws 49a-49d Locking hole

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-165153 (JP, A) JP-A-5-45802 (JP, A) JP-A-5-64850 (JP, U)

Claims (1)

(57) [Claims] 1. A strobe having a photographing mechanism and pre-loaded with an unexposed photographic film, comprising a main body, a front cover and a rear cover mounted before and after the main body, and comprising a strobe discharge tube and a reflector. In a film unit with a lens, a printed circuit board holding a light emitting portion and soldering lead wires of electric elements such as a booster coil and a transistor on a front cover side between a main body portion and a front cover, The cover is composed of a front cover main body and a cover member fixed to the front surface of the cover, and a locking claw formed on the cover member is fitted into a locking hole formed on the front cover main body, and these are inserted into the main body. When mounted, the locking hole and the locking
At least a part of the nail is located in front of the printed circuit board.
A film unit with a lens , wherein the locking claw does not hit a soldered portion of a printed circuit board.