JPH11237663A - Film unit with lens provided with built-in stroboscope and card type battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To greatly contribute to miniaturization by eliminating useless space in comparison with the case that the conventional cylindrical battery such as an AA type battery or an AAA type battery is used in a film unit with a lens provided with a built-in stroboscope. SOLUTION: Relating to this film unit with a lens provided with a built-in stroboscope, a stroboscope is incorporated and a plate-like card type battery B1 is used as the power source of the stroboscope. In such a case, a holding surface 14a holding film F with the peripheral part of a photographic image frame 11c in a unit main body 11 is formed on the inner surface of a rear cover 14, and the card type battery B1 is embedded in the outer surface of the cover 14 corresponding to the holding surface 14a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a film unit with a built-in strobe using a card type battery, and a card type battery used as a power source for the strobe.

[0002]

2. Description of the Related Art In a lens-equipped film unit with a built-in strobe, an AA battery serving as a power source for the strobe is arranged vertically in a position next to a roll film chamber around which an unexposed film is wound. Have been done.

[0003] In addition, a AAA battery is also arranged in parallel with a main condenser below a photographic lens or the like.

An instant camera with a built-in strobe in which a flat battery is stored together with a film is commercially available.

[0005]

In the former case of the prior art, the lateral dimension of the lens-equipped film unit is inevitably increased by the outer diameter of the AA battery, and the lens-equipped film unit is reduced in size. It is difficult.

[0006] In the latter case of the prior art, a thin main capacitor is used, and the capacitance must be reduced.

[0007] Further, cylindrical batteries such as AA batteries and AAA batteries tend to have wasted space around the circumference.

The present invention has been made in view of such a problem, and proposes a film unit with a built-in strobe lens which achieves downsizing by efficiently arranging batteries and does not affect the main condenser. Is an object to be solved by the invention.

[0009]

The above object is achieved by any of the following means.

A film unit with a built-in strobe and a strobe built-in lens using a flat card type battery as a power source of the strobe, and a holding surface for holding a film between the unit body and a peripheral portion of a photographing frame. A film unit with a built-in strobe lens, wherein the film unit is formed on an inner surface of a rear cover, and the card type battery is embedded in an outer surface of the rear cover corresponding to the holding surface.

[0011] A film unit with a built-in strobe and a lens with a built-in strobe using a flat card-shaped battery as a power source for the strobe, wherein the card-type battery is embedded in a rear cover that covers the unit body from the rear, A film unit with a built-in strobe lens, wherein the film is held between one surface of a battery and a peripheral portion of a photographing frame of the unit body.

A film unit having a built-in strobe and a lens with a built-in strobe using a flat card-shaped battery as a power source of the strobe, wherein a printed board on which electric components for the strobe are mounted is rolled around an unexposed film. A film unit with a built-in strobe lens, wherein the card type battery is arranged near an outer wall of a room and parallel to the printed circuit board.

A flat card-shaped battery is used as a power source for the strobe, a conductive pattern is formed on an insulating outer surface of the card-type battery, and an electric component for a strobe is mounted on the conductive pattern. Characteristic film unit with built-in strobe lens.

A card type battery wherein a conductive pattern is formed on an outer surface portion having an insulating property and used as a power source for a strobe light.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a film unit with a built-in strobe of the present invention will be described with reference to the drawings.

First, an embodiment using a flat card-shaped battery as shown in FIG. 1 as a power supply for the strobe will be described. In the card-type battery B1, B1a, B1b
Are positive and negative electrodes, respectively.

FIG. 2 is a cross-sectional view of a film unit with a built-in strobe lens.

In the film unit with the lens, the patrone P is placed in the patrone chamber 11 of the unit body 11 during the manufacturing process.
The unexposed film F loaded in a and unloaded from the cartridge P is wound around the roll film chamber 11b and shipped.

When the user presses a release button (not shown), the shutter 12 is opened, subject light is focused on the film F by the photographing lens 13, and the film F is exposed to form a photographing screen. The film F is held between the periphery of the image frame 11c of the unit main body 11 forming the image screen and the holding surface 14a formed on the inner surface of the rear cover 14.

A front cover 15 covers and protects various photographing mechanisms mounted on the unit body together with the rear cover 14, and shields the film F from light.

Here, the card type battery B1 used as a power source of the strobe is buried in a rectangular recess provided on the outer surface of the rear cover 14 corresponding to the holding surface 14a. Then, it is covered with a paper cover 16 so as not to be seen from the outside. Note that a label may be attached instead of the paper cover.

The printed circuit board 17 of the strobe is arranged near the outer wall of the roll film chamber 11b, and the electric components of the strobe are arranged in a space 18 between the outer wall of the roll film chamber 11b and the outer wall forming the picture frame 11c. Mounted on the printed circuit board 17.

On the printed circuit board 17, two long battery contact pieces 19 (which are vertically overlapped in the figure) are erected and soldered, and the tips of the electrodes B1a, B1a of the card type battery B1 are provided at the tips.
It is in pressure contact with B1b. Therefore, when the main switch (not shown) is turned on, the current of the card-type battery B1 flows to the printed circuit board 17, and the charging operation is performed.

Next, an embodiment in which the arrangement of the card type battery B1 is different from that described above will be described with reference to FIG. FIG. 3 is a cross-sectional view of the film unit with a lens, but shows only the roll film chamber side from the optical axis of the taking lens.

The unit body 21, the shutter 22, the taking lens 23, the rear cover 24, and the front cover 25 have the same configurations as those described above, and thus description thereof will be omitted. The printed circuit board 27 of the strobe is disposed near the outer wall of the roll film chamber 21b, and the electric components of the strobe are disposed in the roll film chamber 21b.
The printed circuit board 27 is mounted in a space 28 between the outer wall b and the outer wall forming the image frame 21c. The card-type battery B1 is disposed in front of the printed circuit board 27 in the space on the back surface of the front cover 25 in parallel with the printed circuit board 27, and has two battery contact pieces 29 soldered to the printed circuit board 27 (upper and lower in the figure). Overlaps.)
Are in pressure contact with the respective electrodes B1a and B1b of the card-type battery B1.

In this embodiment, the printed circuit board 27 and the card-type battery B1 are arranged in parallel. However, a conductive pattern is formed on the insulating outer surface of the card-type battery B1, and this conductive pattern is formed. The electric component for strobe light may be directly mounted on the conductive pattern. As a result, the printed board 27 becomes unnecessary, so that the thickness is reduced and the cost is significantly reduced.

Next, an embodiment in which a card-type battery having a shape different from that of the above-described card-type battery B1 and a film is held on the surface of the card-type battery will be described.

First, a description will be given based on FIG. 4 which is a cross-sectional view of a film unit with a built-in strobe lens. The configuration of FIG. 4 is similar to FIG. 2, and the same members are denoted by the same reference numerals. is there.

FIG. 4 differs from FIG. 2 in that the card-type battery B2 is embedded in the concave portion provided on the inner surface of the rear cover 34 from the photographing lens 13 side.
2 has a slightly curved surface B2a, and holds the film F between the unit body 1 and the periphery of the photographing frame 11c. Although not shown, a projection that comes into contact with the peripheral portion of the card-type battery B2 is provided from a position that does not interfere with the film F in the peripheral portion of the photographing image frame 11c of the unit body 1, and the other portion of the card-type battery B2 Of the card-type battery B is brought into contact with the bottom surface 34a of the concave portion of the rear cover 34.
Holding 2.

That is, the present embodiment is characterized in that one surface B2a of the card-type battery B2 is used as a holding surface for holding a film, and this holding surface is obtained by simply bending a flat surface. However, it is more preferable to provide a plurality of ribs or a plurality of irregularities in the longitudinal direction of the film in consideration of frictional resistance at the time of film winding.

The battery contact piece 39 is pressed against an electrode provided on one surface B2a of the card type battery B2 at a position where it does not interfere with the film F.

Further, unlike the card type battery as shown in FIG. 4, a card type battery having flanges on the left and right is used, and a groove is provided in the rear cover in a direction perpendicular to the plane of FIG. 4, and the flange of the card type battery is inserted into this groove. It may be inserted.

Next, description will be made with reference to FIG. 5 which is a cross sectional view of a film unit with a built-in strobe lens. The structure of FIG. 5 is similar to FIG. 4, and the same members are denoted by the same reference numerals. It is.

In FIG. 5, similarly to FIG. 4, the card type battery B3 is embedded from the photographing lens 13 side on the inner surface of the rear cover 44, and one surface B3a of the card type battery B3 is provided.
Holds the film F between the unit body 1 and the periphery of the photographing image frame 11c. Also, the point that the card-type battery B3 is held by a protrusion (not shown) provided on the unit body 11 and that the battery contact piece 49 is pressed against the electrode of the card-type battery B2 at a position where it does not interfere with the film F. The same is true for
However, the portion of the rear cover 44 in which the card-type battery B3 is embedded is formed in a through hole, and the card-type battery B3
Is different in that the other surface B3b is exposed outward.
Note that even if the card type battery B3 is exposed, it is covered with the paper cover 16.

Although the card type battery B3 is embedded from the inside of the rear cover 44 in FIG. 5, it may be configured to be embedded from the outside.

[0036]

According to the film unit with a built-in strobe according to the first to eighth aspects and the card-type battery according to the ninth aspect, when a card-type battery is used, a conventional AA battery or AAA battery can be used. As compared with the case where a cylindrical battery such as a battery is used, there is no useless space, and the battery can be disposed in a space that was not possible in the past, thus greatly contributing to downsizing of the film unit with a built-in strobe lens.

[Brief description of the drawings]

FIG. 1 is a perspective view of a card-type battery.

FIG. 2 is a cross-sectional view of a film unit with a built-in strobe lens.

FIG. 3 is a cross-sectional view of a film unit with a built-in strobe lens.

FIG. 4 is a transverse sectional view of a film unit with a built-in strobe lens.

FIG. 5 is a cross-sectional view of a film unit with a built-in strobe lens.

[Explanation of symbols]

 B1, B2, B3 Card type battery B1a, B1b Electrode F film 11, 21 Unit main body 11b, 21b Roll film room 11c, 21c Photographing frame 14, 24, 34, 44 Rear cover 14a Holding surface 17, 27 Printed circuit board 19, 29,39,49 Battery contacts

Claims (9)

[Claims] 1. A film unit with a built-in strobe and a lens with a built-in strobe using a flat card type battery as a power supply of the strobe, and a holding unit for holding a film between the unit body and a peripheral portion of a photographing frame. A film unit with a built-in strobe lens, wherein a surface is formed on an inner surface of a rear cover, and the card-type battery is embedded in an outer surface of the rear cover corresponding to the holding surface. 2. A film unit with a built-in strobe and a strobe built-in lens using a flat card-shaped battery as a power source for the strobe, wherein the card-type battery is embedded in a rear cover for covering the unit body from behind, A film unit with a built-in flash, wherein the film is held between one surface of the card-type battery and the periphery of a photographing frame in the unit body. 3. The film unit with a built-in flash according to claim 2, wherein the other surface of the card-type battery is in contact with a bottom surface of a concave portion provided on an inner surface of the rear cover. 4. The film unit with a built-in flash according to claim 2, wherein the other surface of the card type battery is exposed to the outside through a through hole provided in the rear cover. 5. A printed circuit board on which an electric component for a strobe is mounted is disposed near an outer wall of a roll film chamber around which an unexposed film is wound, and an electrode of the card type battery and the printed circuit board do not interfere with the film. The film unit with a built-in flash according to any one of claims 1 to 4, wherein the film unit is connected at a position. 6. The film unit with a built-in flash according to claim 1, wherein the card type battery exposed to the outside is covered with a paper cover or a label. 7. A film unit having a built-in strobe and a lens with a built-in strobe using a flat card type battery as a power source of the strobe, wherein a printed board on which electric components for the strobe are mounted is wound with an unexposed film. A film unit with a built-in strobe lens, wherein the card type battery is disposed near an outer wall of a roll film chamber and parallel to the printed circuit board. 8. A flat card-shaped battery is used as a power source for the strobe, a conductive pattern is formed on an insulating outer surface of the card-shaped battery, and an electric component for a strobe is mounted on the conductive pattern. A film unit with a built-in strobe lens. 9. A card-type battery wherein a conductive pattern is formed on an outer surface portion having an insulating property and used as a power source for a strobe.