JPH0812371B2 - Film unit with lens having strobe - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit in which it is practically impossible for a user to reload and reuse the film after photographing. Particularly, the present invention relates to a film unit with a lens provided with a strobe.

[0002]

2. Description of the Related Art A film unit with a lens (hereinafter referred to as a film unit), which houses a film and has a simple photographing mechanism in a box-shaped container having a lens window on the front, is called "Sharun" or "Sharan". It is sold by the applicant as "Run. Hi". Since these film units are disposable, the manufacturing cost is kept as low as possible, and for example, a 1-speed shutter of about 1/100 second is used as the shutter. Then, the latitude of the film corresponds to the height of the subject brightness so that an appropriate print density is obtained during the print processing.

However, in photography indoors or at night, printed photographs are often underexposed. In consideration of such circumstances, the present applicant has disclosed in Japanese Patent Application No. Sho 62-90677 and Japanese Patent Application No. 62-123722 that the reprocessing of the existing film unit is minimized and the manufacturing cost is kept as low as possible. Proposing a film unit.

[0004]

However, the film unit with a strobe proposed so far by the above-mentioned application has a structure in which a separate strobe device is externally attached to a conventional film unit. The strobe device may come off due to shocks during transportation or carrying, or contact failure may occur at the contact point for synchronization, which is easily a cause of trouble.

Further, since the strobe is assembled separately,
It was necessary to incorporate batteries and capacitors in the casing, and the strobe device itself could not be sufficiently miniaturized. Therefore, the film unit to which such a strobe device is externally attached is not necessarily compact, and the manufacturing cost is not sufficiently low.

Therefore, it is conceivable that the strobe is built into the main body of the film unit, but in the lens-fitted film unit, the box-shaped main body itself is made extremely small, and the normal size is provided inside. Since the above film is loaded, it is necessary to devise to store the strobe device and the battery serving as a power source for the light emission.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and makes it possible to integrate a simple stroboscopic device into a compact structure and reduce the manufacturing cost. It is an object of the present invention to provide an optimum configuration for incorporating a strobe device in a film unit with a lens capable of performing.

[0008]

In order to achieve the above object, the present invention provides a patrone chamber in which a patrone is previously housed in a box-shaped main body having a photographing lens window on the front surface.
Equipped with a film roll chamber that stores unexposed film in a roll and a strobe device that emits a flash of light in synchronization with the opening of shutter blades, so that it cannot be reused after the taken film is taken out. In the film unit with lens, the cartridge chamber is formed so as to extend in the height direction in the vicinity of one end of the main body in the horizontal direction, and the film roll chamber is formed at a position spaced laterally from the cartridge chamber. A film regulating means for regulating the film is provided between the cartridge chamber and the film roll chamber so as to extend in the direction and at the exposure position near the rear surface of the main body.
Then, a stroboscopic illumination window is formed on the front surface near the other end of the main body, and a strobe circuit board supporting the stroboscopic light emitting means and the stroboscopic capacitor is provided inside the main body at a position behind the stroboscopic illumination window. Deploy. Further, in the inside of the main body portion, the stroboscopic light source battery is arranged laterally along the corner portion between the bottom portion and the front surface of the main body portion at a position between the cartridge chamber and the film roll chamber.

[0009]

When the shutter blade is opened by the shutter release operation, a sync signal for strobe emission is generated. This synchronizing signal is transmitted to the strobe circuit board, and the strobe light emitting tube attached to this circuit board emits a flash of light. A strobe circuit board supports a capacitor that stores energy for strobe light emission. This capacitor is charged by being supplied with power from a battery that is installed in a landscape orientation between the cartridge chamber and the film roll chamber. In the present invention, since the light emitting tube and the condenser of the strobe device are supported by the strobe circuit board, the strobe device itself has a compact structure and is easy to install.
It can be incorporated into the body of a film unit with a lens manufactured in an extremely small size without any support. Further, since the film unit with a lens is manufactured in a small size, the exposure position of the film formed in the vicinity of the back surface of the box-shaped main body is such that the lower end is located in the vicinity of the lower end of the main body. In this configuration, paying attention to the fact that the optical path for exposure from the exposure window on the front of the main body to the exposure position of the film spreads backward in a pyramid shape. By arranging it in the lateral direction along the corner between the bottom and front of the main unit at a position between the roll chamber and strobe light, it does not obstruct the optical path for exposure and It is possible to arrange the power supply battery in a limited dead space in the main body. As described above, according to the present invention, it is possible to obtain the optimum configuration for incorporating the strobe device in the lens-fitted film unit having the extremely small body.

Embodiments of the present invention will be described below with reference to the drawings.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 4 showing the appearance of a lens-equipped film unit (hereinafter abbreviated as film unit) 10 of the present invention, a main body 11 of the film unit 10 is covered with a paper box 12. The paper box 12 includes a taking lens 14, a window opening 15a, and a release button 1.
6, film counter display window 17, winding knob 18,
Holes for exposing the light emitting unit 20, the charging switch 21, and the neon lamp 22 (see FIG. 2) are opened, and shooting operations and display of required parts can be confirmed through these holes.

As will be described later in detail, the main body 11 has a roll 13 which is pulled out from the cartridge.
Five types of film rolls and a cartridge for winding the film rolls are loaded, and a user who purchases the film rolls can directly operate the release button 16 to take a picture. By operating the winding knob 18 every time a picture is taken, the exposed film is wound into the cartridge. Then, after the photographing of all the frames is completed, the images are submitted as they are to the developing dealer. At the developing station, the cartridge is taken out from the main body 11, the conventional developing and printing processes are performed, and the negative and the print photograph are returned to the user. Therefore, the main body 11 of the film unit 10 is disposable and cannot be returned to the user.

The main body 11 is molded of light-tight plastic, and a bottom lid 13 (see FIG. 2) formed integrally with the main body 11 via a hinge 64 is formed on the bottom of the main body 11. It is fixed by ultrasonic welding or the like and is light-tightly closed so that the user cannot remove it. In FIG. 3 showing a state in which the bottom lid 13 is removed from the main body 11 for the sake of simplicity, in order to regulate the cartridge chamber 11c, the film roll chamber 11d and the film at a predetermined exposure position in the central portion of the main body 11. The curved groove 11e is formed. This groove 11e
The curvature is set so as to coincide with the image forming plane of the taking lens 14, and it is considered that a negative image with sufficient image quality can be obtained even with the low-cost taking lens 14. At the time of assembling the main body 11, a cartridge 70 for 135 films and a film 71 pulled out from the cartridge 70 are loaded in the cartridge chamber 11c and the film roll chamber 11d, respectively.

Between the cartridge chamber 11c and the film roll chamber 11d, an AA dry battery 32 as a power source for the strobe is provided laterally along the corner between the bottom and front of the main body 11. , And is fitted and fixed in a battery receiving portion 65 formed integrally with the main body portion 11. One electrode of this battery 32 is soldered to an end of an L-shaped contact piece 26 described later via a lead wire 33, and the other electrode is soldered to a main capacitor 31 via a lead wire 34 and a printed circuit board 30. It is designed so that it does not come off easily.

FIG. 2 showing a side cross section of the film unit 10.
In the above, the printed circuit board 30 not only functions as a wiring portion for the components that form the strobe circuit 28, but also as a support. The light emitting part 20 is on the front upper part of the printed circuit board 30, the strobe circuit 28 is on the middle part, the charging switch 21 is on the lower part, and the main capacitor 3 is on the back surface.
1 is attached. The light emitting portion 20 is arranged so as to be excluded from the strobe lighting window formed on the front surface of the main body portion 11. The light emitting portion 20 is formed with a discharge tube storage chamber 20a having an umbrella-shaped cross section. It is metal-plated and has a mirror finish. A discharge tube 23 filled with xenon gas (Xe) is attached to the discharge tube storage chamber 20 a and is connected to a strobe circuit 28. This discharge tube 23 is protected and the discharge tube 2
A cover 24 made of transparent plastic for flattening the light distribution characteristic of No. 3 is adhered to the front surface of the discharge tube housing chamber 20a.

The charging switch 21 includes a Z-shaped contact piece 25.
And an L-shaped contact piece 26. The L-shaped contact piece 26 is made of a conductive metal having elasticity and is screwed to the lower end of the printed circuit board 30. The L-shaped contact piece 26 is adhered with a plastic molded insulating disc 27 for preventing electric shock as shown in the figure. One Z-shaped contact piece 25 is mounted on the printed circuit board 30 behind the insulating disk 27. The printed circuit board 3
The lower part of 0 is fixed to the main body 11 by a pin 36, and the upper part thereof is fixed to the main body 11 by a pin (not shown).

An opening 39 is formed in the upper part of the back surface of the main body 11, and a neon lamp 22 which is lit when the charging of the main capacitor 31 is completed and informs that the preparation for light emission is OK is fitted in the opening 39. It is connected to the printed circuit board 30 by a wire. The insulating disk 27 of the charging switch 21 is retracted from the front surface of the main body 11 and set in a position so that the charging switch 21 is not inadvertently pressed. Therefore, even if the battery 32 is pre-loaded, the concern that the battery 32 will be exhausted by the time the film unit 10 is handed to the user and the film unit 10 cannot be used when necessary.

The main part 11 of the film unit 10 is shown in FIG.
A shutter base 51 is integrally formed with the main body 11 at the center of the shutter base 51, and a shutter operating lever 52 is arranged above the shutter base 51. Shutter base 5
The shutter blade 50 is rotatably attached to the pin 51a formed on the first pin 51a.
It is urged in the counterclockwise direction by a spring 54 that is hung between 1c.

An opening 55 for exposure is opened at the center of the shutter base 51, and is normally closed by the shutter blades 50. Below this opening 55 is a groove 56.
Is provided, and the contact pieces 62, 6 of the synchro contact unit 60 are provided.
3 is stored. The synchro contact unit 60 is composed of elongated contact pieces 62, 63 made of a conductive metal, and a support member 61 molded by plastic so as to hold the contact pieces 62, 63 in a separated state. ing.

The tip of the contact piece 62 is bent toward the contact piece 63 so that the tip of the contact piece 62 surely contacts the contact piece 63 when the shutter blade 50 is fully opened. , 63 are adjusted. Also, the contact piece 62,
Although not shown, the ends 62a and 63a of 63 are connected to a trigger circuit in the flash circuit 28. Between the cartridge chamber 11c and the film roll chamber 11d below the contact pieces 62 and 63, the battery 32 as the power source for the strobe is integrally formed with the main body portion 11 and the battery receiving portion 65 is formed as described above. It is fitted and fixed in. In the conventional film unit, since the space between the cartridge chamber 11c and the film roll chamber 11d is made as narrow as possible for the sake of compactness, the space corresponding to the length of the battery 32 is insufficient. Then, Patrone room 11c
Battery 3 for strobe between the film roll chamber 11d and the film roll chamber 11d
Since the space for storing 2 is widened, it is very advantageous in terms of fixing and holding the battery and making the film unit compact. That is, the cartridge chamber 11c of the conventional film unit, which does not incorporate a strobe,
Even if the space between the film roll chamber 11d and the film roll chamber 11d is slightly widened, it is possible to store an AA type dry battery having a large shape as a single component.

Next, the operation of the present invention will be described.
First, with the left index finger or the like, the insulating disk 27 of the charging switch 21
When is pressed, the L-shaped contact piece 26 is bent as shown by the broken line in FIG. 2 to come into contact with the Z-shaped contact piece 25, and a current starts to flow from the battery 32 to the main capacitor 31 in the flash circuit 28. When the main capacitor 31 is sufficiently charged, the neon lamp 22 is turned on to inform that the charging is completed.

In FIG. 1 showing the state in which the shutter operating lever 52 is set, when the release button 16 is pushed in, the shutter operating lever 52 rotates vigorously while pressing the projection 50a. Then, the shutter blade 50 is rotated to the position indicated by the dotted line, and the opening 55 is fully opened. At the same time, the tip of the shutter blade 50 presses the contact piece 62, and the tip portion of the contact piece 62 contacts the contact piece 63.

At this moment, the ends 62a of the contact pieces 62, 63,
A short circuit signal is supplied to the trigger circuit in the strobe circuit 28 via 63a, and the high-voltage electric charge charged in the main capacitor 31 flows into the discharge tube 23 and is discharged and emitted.
Auxiliary lighting is provided toward the subject. At the next moment, the projection 50a of the shutter blade 50 is disengaged from the shutter charge lever 52 and is pulled back by the spring 54. Then, the shutter blade 50 comes into contact with the stopper 51b and stops, and the opening 55 is closed. Then, the neon lamp 22 is turned off at the same time when the discharge tube 23 is discharged and emitted, and is not turned on until the main capacitor 31 is charged again. When the pressing of the charging switch 21 is stopped, the L-shaped contact piece 26 returns to the position shown by the solid line in FIG. 2, and the charging of the strobe circuit 28 is stopped.

When the winding knob 18 is operated for the next photographing, the film 71 for one frame is wound on the cartridge 70 and the next frame is transferred to the exposure position. By repeating this, the Patrone 7
0 stores all the films 71. After all the frames have been shot, they are submitted to the development store as they are. In the photo lab, after removing the main body 11 from the paper box 12, the bottom cover 13 is opened and the cartridge 7 is removed from the main body 11.
0 is taken out, the lead wires 33 and 34 are cut, and the battery 32 is taken out from the battery receiving portion 65. The taken cartridge 70 is developed and printed as usual, and the negatives and prints are returned to the user.
Since it contains harmful substances, it is discarded separately from the film unit 10.

In the above-described embodiment, the bottom cover 13 is attached to the main body 1
Although it was fixed to the bottom surface of No. 1 by ultrasonic welding, it may be configured as shown in FIG. In the example shown in FIG. 5, the bottom lid 72 is flexibly formed on one bottom side of the main body 11, and the bottom lid 72 is locked at a position that covers the bottom surface of the main body 11 by using the claw 73. is there. As described above, various modes can be adopted for fixing and opening the bottom lid.

[0026]

As described above, in the lens-fitted film unit of the present invention, since the strobe light emitting tube and the condenser are supported on the strobe circuit board, the strobe device itself can be constructed compactly, and it is manufactured in an awkward manner. The strobe device can be easily incorporated into the body of the film unit with a lens. Further, a power source battery for stroboscopic light emission is arranged inside the main body portion at a position between the cartridge chamber and the film roll chamber, in the lateral direction along the corner portion between the bottom portion and the front surface of the main body portion. Therefore, the power source battery for stroboscopic light emission can be arranged in a limited dead space in the main body without any obstacle to the optical path for exposure. As described above, according to the present invention, it is possible to obtain the optimum configuration for incorporating the strobe device 2 in the lens-fitted film unit having an extremely small body.

[Brief description of drawings]

FIG. 1 is a front view in which a part of an outer surface portion is broken in order to disclose a main portion of an embodiment of the present invention.

FIG. 2 is a side sectional view of one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state in which the bottom cover of one embodiment of the present invention is removed.

FIG. 4 is a perspective view showing an appearance of an embodiment of the present invention.

FIG. 5 is a perspective view showing another configuration example of the bottom lid that covers the bottom surface of the main body.

[Explanation of Codes] 10 Film Unit 11 Main Body 12 Paper Box 14 Photographic Lens 20 Light Emitting Section 21 Charging Switch 32 Battery

Claims (1)

[Claims] 1. A box-shaped main body having a photographing lens window on a front surface thereof, a cartridge chamber for accommodating a cartridge in advance, a film roll chamber for accommodating an unexposed film in a roll shape, and a shutter blade opening in synchronization with each other. In the lens-equipped film unit having a strobe device that emits a flash of light, the strobe device being configured such that the film cannot be reused after the taken film is taken out. Is formed so as to extend in the height direction in the vicinity of the portion, the film roll chamber is formed to extend in the height direction at a position laterally spaced from the patrone chamber, the patrone chamber and the film roll chamber Between
A film regulating means for regulating a film is provided at an exposure position near a rear surface of the main body portion, a stroboscopic illumination window is formed on a front surface near the other end portion of the main body portion, and inside the main body portion, A strobe circuit board supporting a strobe light emitting means and a strobe condenser is disposed at a position behind the strobe illumination window, and inside the main body part, at a position between the cartridge chamber and the film roll chamber, the main body is provided. A film unit with a lens having a strobe, characterized in that a power source battery for stroboscopic light emission is arranged laterally along a corner between the bottom and the front of the section.