JPH10221764A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film unit with a lens whose width is made small without increasing its thickness by devising the arrangement of a dry cell, etc., and a method for electric connection to the dry cell. SOLUTION: The external wall of a film roll chamber 6 is formed to project in semi-cylindrical shape. A circuit board 31 is longitudinally arranged on the side surface 6a, which is close to an aperture, of the external wall of the chamber 6 so as to be horizontal with respect to the front surface of a main body base part 10. The one-end side of a pair of contact plates 36 and 15 made of metallic thin plate is fixed on the circuit board 31. The contact plates 36 and 15 are extended toward the other side surface 6b of the external wall of the chamber 6. The dry cell 30 is longitudinally arranged along the side surface 6b of the chamber 6 by the contact plates 36 and 15. A main capacitor 33 is arranged between the chamber 6 and a cartridge chamber.

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 built-in strobe and a lens.

[0002]

2. Description of the Related Art A film unit with a lens in which a simple photographing mechanism is incorporated and in which an unexposed film is loaded in advance is generally widely used because photographing can be performed simply by purchasing the film. A film unit with a lens that has a built-in strobe and enables shooting in the dark is available.

[0003] This film unit with a lens is provided with an aperture for determining an exposure range of the film.
A main body base provided with a film roll chamber for storing a rolled unexposed film and a cartridge chamber for storing a cartridge into which a photographed film is wound, a front cover for covering a front surface and a back surface of the main body base, respectively; It is composed of a rear cover and a flat circuit board which is horizontally disposed between the front surface of the base of the main body and the front cover, and on which circuit parts for a strobe are mounted.

According to the present applicant, a circuit board is arranged on the outer wall of the film roll chamber close to the aperture at a position lower than the top of the film roll chamber, and a dry battery serving as a power source of the strobe device is mounted on the substrate surface of the circuit board. A lens-equipped film unit having an overall thickness less than the outer diameter of the cartridge, which is disposed between the film roll chamber and the cartridge chamber so as not to overlap, is sold.

[0005]

However, in the lens-fitted photo film unit having the above-described structure, since the dry battery is disposed between the photo film roll chamber and the cartridge chamber, the distance between the photo film roll chamber and the cartridge chamber is determined. Further, it has been difficult to further reduce the size of the film unit with a lens in the width direction.

The present invention has been made in consideration of the above-described problems, and has been devised by arranging a dry battery or a circuit board serving as a power source of a strobe and an electric connection between the dry battery and the circuit board without increasing the thickness. It is an object of the present invention to provide a lens-fitted film unit capable of reducing the width.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a circuit board is vertically elongated along a side surface near an aperture of an outer wall of a film roll chamber protruding in a semi-cylindrical shape. A pair of contact plates made of a thin metal plate having one end fixed to the circuit board are extended toward the other side of the outer wall of the film roll chamber, and these pair of contact plates serve as a power source of the strobe device. The dry battery is vertically arranged along the other side of the outer wall of the film roll chamber.

According to the second aspect of the present invention, the circuit board is vertically arranged along the side of the outer wall of the film roll chamber protruding in a semi-cylindrical shape near the aperture, and the circuit board is arranged on the other side of the outer wall of the film roll chamber. A contact piece holding portion for holding a pair of contact pieces connected to the circuit board by a lead wire is formed, and a dry battery serving as a power source of the strobe device is film-rolled by the pair of contact pieces attached to these contact piece holding portions. It is arranged vertically long along the other side of the outer wall of the room.

According to the third aspect of the present invention, the main capacitor for strobe light emission is arranged so as not to overlap the substrate surface of the circuit board.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of a film unit with a lens using the present invention will be described. FIG. 2 is an exploded perspective view of the lens-fitted film unit. The film unit with a lens is provided integrally with a film roll chamber 6 for accommodating a rolled unexposed film 5 and a cartridge chamber 8 for accommodating a cartridge 7 in which a photographed film 5 is wound, with an exposure mechanism interposed therebetween. A main unit base 10, a front cover 11 and a rear cover 12 that respectively cover the front and back surfaces of the main unit base 10, and a strobe unit 13 that is incorporated into the front surface of the main unit base 10 and covered by the incorporation of the front cover 11. ing. In addition,
The storage of the film 5 may be wound around a core rotatably stored in the film roll chamber 6.

A winding knob 13 is rotatably arranged above the cartridge chamber 8. The shaft of the take-up knob 13 is engaged with one end of a spool 7a rotatably incorporated in the cartridge 7, and by rotating in the direction of the arrow in the figure, the photographed film 5 It is wound inside. The top of the outer wall of the film roll chamber 6 is formed with a recess 16 into which a contact plate 15 described later enters.

The exposure mechanism 18 includes a film counter mechanism,
Dark box 2 in addition to the film unwinding mechanism and shutter mechanism
0, a photographing lens 21, a finder device 22, and the like, and are incorporated in the front surface of the main body base 10.
Further, the dark box 20 is divided so that a part of the dark box 20 is left in the main body base 10, and the components of the exposure mechanism 18 described above are attached to the other dark box 20 to form unitized parts. You may make it attach to a detachably. Further, instead of attaching the finder device 22 to the exposure mechanism 18, the finder device 22 may be attached to the front cover 11.

The front cover 11 has a shutter button 23,
A charging switch 24, a protruding portion 25, and the like are provided. The protruding portion 25 is formed to protrude along the outer wall of the cartridge chamber 8 in order to make the overall thickness of the film unit with a lens less than the outer diameter of the cartridge 7.
It is used as a grip when shooting.

The rear cover 12 has a film support surface 27 for supporting the film surface from the back side. At the bottom of the rear cover 12, a pull-top type lid 2 that covers the bottom openings of the cartridge chamber 8 and the film roll chamber 6 is provided.
8, 29 are provided respectively.

The front cover 11 and the rear cover 12 have battery support pieces 11a, 12b that follow the outer peripheral surface of the dry battery 30 and are curved.
a is integrally formed.

The strobe unit 13 is printed with wirings constituting a known strobe circuit, and has conductive surfaces 31a, 31b.
The light emitting section 3 is provided on the flat circuit board 31 on which the base 31b is formed.
2, main capacitor 33, synchro switch 34, L
The ED 35 and the contact plates 36 and 15 made of a thin metal plate for incorporating the dry battery 30 are configured. A contact piece 38 is incorporated between the outermost wall of the film roll chamber 6 and the front cover 11, and when the charge switch 24 is pressed, the conductive surfaces 31a and 31b are short-circuited by the contact piece 38, and Charging is started. When the charging is completed and the flash photography is enabled, the LED 35 is turned on to notify the user through the viewing window 40 provided in the rear cover 12. When the shutter button 23 is pressed, the synchro switch 34 is short-circuited in response to the opening and closing of the shutter blades, and strobe light is emitted from the light emitting unit 32.

As shown in FIG. 2, the outer wall of the film roll chamber 6 is formed to project in a semi-cylindrical shape on the front side. An aperture 41 for determining the exposure range of the film 5 is provided between the film roll chamber 6 and the cartridge chamber 8 so as to be sandwiched therebetween. The circuit board 31 is provided on a side surface 6 of the outer wall of the film roll chamber 6 near the aperture 41.
The main body 10 is disposed vertically long along a.

The contact plates 36, 15 having one end fixed to the circuit board 31 are extended toward the side surface 6b farther from the aperture 41 of the outer wall of the film roll chamber 6, and are provided on the upper and lower portions of the film roll chamber 6. The dry batteries 30 are incorporated between them. The dry battery 30 is vertically arranged along the side surface 6 b of the outer wall of the film roll chamber 6. The outer peripheral surface of the dry battery 25 has battery support pieces 14a,
Since it is supported by 15a, rattling is prevented. The main condenser 33 is laid on the bottom between the film roll chamber 6 and the cartridge chamber 7. Since the degree of freedom of the shape of the main condenser 33 is high, the space between the film roll chamber 6 and the cartridge chamber 8 can be narrowed to reduce the width of the lens-fitted film unit.

Further, with the above configuration, the film roll chamber 6 and the cartridge chamber 7 can be provided as close as possible to the aperture 41, and the main body base 11 does not need to be provided with a holding portion for the dry battery 25. Therefore, the main body base 11 and the exposure mechanism can be used as they are for a film unit with a lens without a strobe, and the cost can be reduced from the mass production effect.

Since the contact plate 15 enters the recess 16 of the film roll chamber 6, the contact plate 15 is
There is no increase in thickness due to passing over. The main capacitor 33 is arranged so as not to overlap with the circuit board 31. Of course, the circuit board 31 does not overlap with the top of the outer peripheral surface of the film roll chamber 6, which helps to reduce the thickness of the lens-fitted film unit.

Further, as shown in FIG. 3, two divided circuit boards 31a and 31b may be used. One circuit board 3
The reference numeral 1a is vertically arranged along the side surface 6a of the outer wall of the film roll chamber 6, and is disposed horizontally with respect to the front surface of the main body base 10.
A contact plate 3 having one end fixed to the circuit board 31a and extending toward the side surface 6b of the outer wall of the film roll chamber 6.
6 and 15 incorporate the other circuit board 31b.
The circuit board 31b is provided on the side surface 6 of the outer wall of the film roll chamber 6.
The main body 10 is vertically arranged along the line b. Thus, the two circuit boards 31a, 31a
By using the above, a sufficient space for assembling circuit components is secured, so that conventional large circuit components can be reused.

As shown in FIG. 4, a circuit board 31 and lead wires 53, 54 are disposed vertically on the front surface of the main body 10 vertically along the side surface 6a of the outer wall of the film roll chamber 6.
Each of the pair of contact pieces 53, 54 connected by the above is held by a pair of contact piece holding portions 51, 52 integrally provided above and below the side surface 6b of the outer wall of the film roll chamber 6, and the dry battery 30 is rolled. It may be arranged vertically long along the side surface 6 a of the outer wall of the chamber 6. Connect the contact piece holding portion 51 to the front cover 1
1 and the rear cover 12.

In the above-described embodiment, the circuit board is disposed horizontally with respect to the front surface of the main body base. However, the present invention is not limited to this. The circuit board may be vertically oriented along a side of the outer wall of the film roll chamber near the aperture and perpendicular to the front surface of the main body base. In the above embodiment, the main capacitor and the circuit board are arranged so as not to overlap with each other, but the present invention is not limited to this.

[0024]

As described above, in the present invention, electrical connection is made using a pair of metal contact plates, a pair of lead wires, and a pair of contact plates connected to the lead wires. The battery, which is the power source of the strobe device, can be vertically arranged along the other side surface of the outer wall of the film roll chamber without increasing the power consumption. By reducing the width of the film roll chamber and the cartridge chamber, the size of the lens-equipped film unit can be reduced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a film unit with a lens according to the present invention.

FIG. 2 is an exploded perspective view of the lens-fitted film unit of the present invention.

FIG. 3 is an exploded perspective view of a lens-fitted film unit using a two-divided circuit board.

FIG. 4 is an exploded perspective view of a lens-fitted film unit using a pair of lead wires and a pair of contact plates connected thereto.

[Explanation of symbols]

 Reference Signs List 5 film 6 film roll chamber 7 cartridge 8 cartridge chamber 10 main body base 11 front cover 12 rear cover 30 dry battery 31 circuit board 32 light emitting section 33 main capacitor 36, 15 contact plate 37 light emitting section

Claims (3)

[Claims] 1. A film roll chamber for accommodating a rolled film and a cartridge chamber for accommodating a cartridge in which a photographed film is wound, so as to sandwich an aperture for determining a film exposure range,
The outer wall of the film roll chamber is disposed between the front and rear covers of the main body, the front and rear covers of which cover the front and back of the main body, respectively. A lens-equipped film unit having a flat circuit board on which a strobe circuit element is mounted, wherein the circuit board extends vertically along a side surface near an aperture of an outer wall of a film roll chamber protruding in a semi-cylindrical shape. A pair of contact plates made of a thin metal plate having one end fixed to the circuit board are extended toward the other side of the outer wall of the film roll chamber, and these pair of contact plates serve as a power source of the strobe device. A film unit with a lens, wherein a dry battery is vertically arranged along the other side of the outer wall of the film roll chamber. 2. A film roll chamber for accommodating a rolled film and a cartridge chamber for accommodating a cartridge in which a photographed film is wound, so as to sandwich an aperture for determining a film exposure range,
The outer wall of the film roll chamber is disposed between the front and rear covers of the main body, the front and rear covers of which cover the front and back of the main body, respectively. A lens-equipped film unit having a flat circuit board on which a strobe circuit element is mounted, wherein the circuit board extends vertically along a side surface near an aperture of an outer wall of a film roll chamber protruding in a semi-cylindrical shape. A contact piece holding portion for holding a pair of contact pieces connected to the circuit board by a lead wire is formed on the other side of the outer wall of the film roll chamber while being arranged, and a pair of contact pieces attached to these contact piece holding portions is formed. A battery unit with a lens, characterized in that a dry battery serving as a power source of the strobe device is vertically arranged along the other side surface of the outer wall of the film roll chamber by the contact piece of the strobe device. G. 3. The film unit with a lens according to claim 1, wherein a main condenser for strobe light emission is arranged so as not to overlap a substrate surface of the circuit board.