JPH09311414A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the dimension in a lateral direction of a film unit with a lens so as to obtain the compact film unit with a lens by disposing a cylindrical battery and a main capacitor below an exposure part. SOLUTION: The cylindrical battery 13 and the main capacitor for a stroboscope 14 are arranged between a scroll chamber 10a and a cartridge chamber 10b below the exposure part 10c so that their longitudinal directions may be in parallel with the feeding direction of film F. By using an AAA type battery as the battery 13, especially, the width of the film unit with a lens is prevented from getting thick even when the battery 13 and the capacitor 14 are juxtaposed. Since a part C1 where a film entrance exists is projected from other outer periphery part C2, a distance between the scroll chamber 10a and the cartridge chamber 10b is constituted so that the dimension D2 on a photographing lens side may be larger than the dimension D1 on a film side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of a cylindrical battery and a main capacitor used for a built-in strobe in a lens-fitted film unit.

[0002]

2. Description of the Related Art Conventionally, in a film unit with a lens, a scroll chamber in which an unexposed film is wound up in advance in a manufacturing process, and a shutter is opened / closed at the time of photographing to convert the subject light into an unexposed film. An exposure section for exposing and a cartridge chamber for loading a cartridge for winding up and storing the film exposed by the exposure section are arranged in order, and in a film unit with a lens having a built-in strobe, a strobe is provided. The AA type battery, which is the power source, was placed on the side of the scroll chamber so that its longitudinal direction was parallel to the film winding axis.

Further, a main strobe capacitor is arranged on the side of the scroll chamber such that its longitudinal direction is parallel to the winding axis of the film, and a cylinder is provided below the exposure unit between the scroll chamber and the cartridge chamber. The invention in which the type battery is arranged so that its longitudinal direction is parallel to the film feeding direction is
It is described in JP-B-8-12371.

[0004]

However, in any of the above-mentioned prior arts, since the cylindrical battery or the main capacitor is arranged on the side portion of the scroll chamber, the lateral dimension of the lens-fitted film unit becomes large. Was inevitable.

In view of such a problem, it is an object of the present invention to achieve miniaturization of a film unit with a lens without arranging a cylindrical battery or a main capacitor on the side portion of a scroll chamber.

[0006]

Means for Solving the Problems The above problems include a scroll chamber in which an unexposed film is wound in advance during manufacturing,
An exposure section for exposing the unexposed film at the time of shooting, a cartridge chamber for loading a cartridge for winding and storing the film exposed by the exposure section for each shooting, are arranged in order, and a lens having a built-in strobe In the attached film unit, between the scroll chamber and the cartridge chamber below the exposure unit, the cylindrical battery used for the strobe and the main capacitor are arranged such that their longitudinal directions are parallel to the film feeding direction. Placed in
Alternatively, in a film unit with a lens, in which an unexposed film is wound up on a reel in advance at the time of manufacturing, and an exposed film is wound up in a cartridge for each photographing, a cylindrical battery is housed in the reel. .

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a film unit with a lens of the present invention will be described in detail with reference to FIGS.

First, the basic form of the lens-fitted film unit of the present invention will be described with reference to FIGS. 1 is an external front view of the lens-fitted film unit, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG.

First, as shown in FIG. 1, a photographing lens 1, a finder 2, and a stroboscopic light emitting section 3 are arranged on the front of the exterior of the film unit with lens.

Next, the inside of the lens-fitted film unit will be described with reference to the cross-sectional views of FIGS. 2 and 3. In both figures, only the structure relating to the present invention is shown, and other members are omitted. In the present embodiment, a film unit with a lens loaded with a new standardized film called APS (hereinafter referred to as IX240 film) released in this year (1996) will be described, but IX2 is not always required.
The film is not limited to 40 films, and all similar films fall within the scope of the present invention.

In the manufacturing process of the film unit with lens, the unexposed film F is pulled out from the cartridge C in advance as much as possible, and the film F is rolled on the reel 11 arranged in the scroll chamber 10a provided in the camera body 10. Wind it up. The cartridge C is housed in the cartridge chamber 10b provided in the camera body 10. After that, the front cover 4 is attached to the subject side and the rear cover 5 is attached to the photographer side to cover the camera body 10 in a light-tight manner.

When shooting is performed using the film unit with a lens manufactured as described above, the shutter 12 opens and closes,
The subject lens exposes the unexposed film F by the taking lens L. The portion where the film F is exposed is referred to as an exposure portion 10c. The exposed film is wound into the cartridge C frame by frame by a film winding mechanism (not shown) which is a well-known conventional means.

The lens-fitted film unit of the present invention has a built-in strobe. The stroboscopic light emitting unit 3 for irradiating the subject with stroboscopic light is composed of a xenon tube, a reflecting mirror, etc., which are not shown, but in order to reduce red eyes generated when photographing a person, a photographing lens is used as much as possible. A farther position is preferable, and the farther position is arranged above the scroll chamber 10a in the camera body 10. Although not shown, a strobe oscillation circuit, a rectification circuit, a charging circuit, a trigger circuit, and the like are mounted on a printed circuit board, and a gap between the outer surface of the scroll chamber 10a and the front cover 4 and an outer surface of the scroll chamber 10a are provided. It is arranged in a dead space between the outer surface of the exposure section 10c.

Other main components of the strobe are a battery as a power source for the strobe, and a main capacitor for accumulating high-voltage charges for causing the xenon tube to emit light. A cylindrical battery is suitable as a strobe battery, and in the past, an AA battery was particularly frequently used. The battery and the main capacitor require a large space inside the lens-equipped film unit, and their layout affects the overall size of the lens-equipped film unit.

In the present invention, as shown in FIGS. 1 to 3, a cylindrical battery 13 and a main capacitor 14 are provided below the exposure section 10c between the scroll chamber 10a and the cartridge chamber 10b. It is arranged so that the direction is parallel to the feeding direction of the film F. In particular, by using the AAA battery as the cylindrical battery 13, even if the cylindrical battery 13 and the strobe main capacitor 14 are arranged in parallel, the width of the film unit with lens does not become thick.

In the IX240 film cartridge, since the portion C1 having the film inlet / outlet projects from the other outer peripheral portion C2, as is apparent from FIG.
The distance between the scroll chamber 10a and the cartridge chamber 10b is set such that the dimension D1 on the photographing lens side is larger than the dimension D1 on the film side.
Can be made larger. Since the size of the cylindrical battery 13 is determined by the JIS standard and there is no degree of freedom in size, when aiming to make the film unit with a lens ultra-miniaturized, the size D of the film side even if a AAA battery is used.
Although it is difficult to design it so as to be housed in the range of 1, it can be housed in the range of the dimension D2 on the photographing lens side. On the other hand, the main capacitor 14 does not have a public standard such as JIS standard and is only regulated by the manufacturer's in-house standard. Although there are some restrictions on the diameter, there is considerable freedom regarding the length. Therefore, it is possible to set a dimension that can be sufficiently accommodated even in the short dimension D2 on the photographing lens side. Of course, if you choose a short length main capacitor,
Since the condenser capacity also decreases, the guide number of the strobe also decreases, but it can be offset by making the F number of the taking lens brighter.

Further, when the cylindrical battery 13 can be stored in the range of the dimension D1 without necessarily wanting the ultra-small film unit with a lens, the cylindrical battery 13 is arranged on the film side contrary to the above. The condenser 14 may be housed within the range of the dimension D2 on the photographing lens side.

Further, when aiming for further thinning or when using a main capacitor having a relatively large diameter, it may be difficult to arrange the cylindrical battery 13 and the main capacitor 14 in parallel as described above. At this time, as shown in FIG. 4, an arcuate projection 24a may be provided on the outer wall of the front cover 24 to widen the internal space.

In addition, when it becomes difficult to arrange the cylindrical battery 13 and the main capacitor 14 in parallel because it becomes necessary to arrange some unit below the exposure unit 10c, as shown in FIG. It is also possible to dispose only 14 below the exposure unit 10c and dispose the cylindrical battery 13 inside the cylindrical reel 21. The outer diameter of the reel 21 of this embodiment is the same as that of the reel 1 shown in FIG.
It is necessary to make the scroll chamber 20a of the camera body 20 slightly larger because it has to be larger than the outer diameter of 1, but as compared with the case where the battery is arranged on the side portion of the scroll chamber as in the conventional case, The lateral dimension of the lens-fitted film unit is reduced.

[0020]

According to the film unit with a lens of claims 1 to 4, since the cylindrical battery and the main capacitor are arranged below the exposure portion, the lateral dimension of the film unit with a lens becomes small and the size is small. The lens-equipped film unit can be realized.

According to the lens-equipped film unit of the present invention, since the cylindrical battery is arranged in the reel, the lateral dimension of the lens-equipped film unit is reduced, and a small-sized lens-equipped film unit can be realized. .

[Brief description of drawings]

FIG. 1 is an external front view of a film unit with a lens.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is a vertical cross-sectional view of a lens-equipped film unit in which an arcuate protrusion is provided on the outer wall of the front cover.

FIG. 5 is a cross-sectional view of a film unit with a lens in which a cylindrical battery is arranged inside a reel.

[Explanation of symbols]

 F film C cartridge L shooting lens 3 stroboscopic light emitting unit 4,24 front cover 5 rear cover 10,20 camera body 10a, 20a scroll chamber 10b cartridge chamber 10c exposure unit 11,21 reel 13 cylindrical battery 14 main capacitor

Claims (6)

[Claims] 1. A scroll chamber for prewinding an unexposed film during manufacturing, an exposure unit for exposing the unexposed film during photographing, and a film exposed by the exposure unit for each photographing. In a film unit with a lens, in which a cartridge chamber for accommodating a cartridge to be stored is sequentially arranged, and a lens unit having a built-in strobe is provided between the scroll chamber and the cartridge chamber below the exposure unit, and is a cylinder used for the strobe. A film unit with a lens, wherein a die battery and a main capacitor are arranged such that their longitudinal directions are parallel to the film feeding direction. 2. The cylindrical battery is formed to be longer than the main capacitor, the cylindrical battery is arranged on a photographing lens side, and the main capacitor is arranged on a film side. The film unit with the lens described. 3. The lens-equipped film unit according to claim 1, wherein an arcuate projection extending along the cylindrical battery is provided on an outer wall on the object side. 4. The lens-equipped film unit according to claim 1, wherein the cylindrical battery is a AAA battery. 5. A lens-equipped film unit in which an unexposed film is wound up on a reel in advance at the time of manufacture, and the exposed film is taken up in a cartridge for each photographing, wherein a cylindrical battery is housed in the reel. Characteristic film unit with lens. 6. The film unit with lens according to claim 5, wherein the cylindrical battery is a AAA battery.