JP2000019598A - Film unit with lens having thin battery unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the supply amount of electric power per unit time of a battery unit and to make a film unit with a lens compact and lightweight by using the thin battery unit as the power source battery. SOLUTION: In this film unit with a lens 2 in which a photographing mechanism and a stroboscope device are assembled and a power source battery for supplying electric power to the stroboscope device is incorporated in a unit main body in which a film is previously loaded, a thin battery unit 1 is used as the power source battery. The primary battery or the second battery can be used as the battery. In the case of the primary battery, the manganese battery and the alkali manganese battery having an aqueous electrolyte and the lithium manganese battery and the lithium graphite fluoride battery having a non-aqueous electrolyte are preferable. In the case of the secondary battery, the Ni-Cd battery and the Nickel hydrogen battery having an aqueous electrolyte and the lithium ion battery having a non-aqueous electrolyte are preferable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery unit having an increased power supply per unit time, reduced size and weight, and a film unit with a lens using the same.

[0002]

2. Description of the Related Art A film unit with a lens is manufactured and sold by the present applicant so that photographers can easily enjoy photography at any time. The film unit with a lens is a unit that incorporates a simple photographing mechanism and has a built-in photo film in advance, so you can take a picture immediately at the place of purchase, and you can also send it to a developing dealer after shooting. Because of its simplicity, it is generally widely used. This film unit with a lens starts with a camera that incorporates only basic photographing mechanisms, such as "Sharprun Super800" (trade name), and switches to "Sharprun Fl
There are various types, such as a device equipped with a strobe device such as "ash" (trade name), which enables shooting at night or indoors, and the user can select a device according to the application.

The built-in flash-equipped lens-equipped film unit further has a built-in battery for supplying power to the strobe device.
A single AA alkaline battery is used. The AA alkaline battery is widely used as a power supply battery in various portable devices, and is easily available at low cost and is easy to handle.

[0004]

However, as a power source battery for a film unit with a built-in strobe type lens, a single AA alkaline battery described above is likely to have an insufficient power supply per unit time. This is because it takes about 5 seconds at the first time and about 6 seconds at the 50th time to fully charge the main capacitor for flash emission prior to flash photography, and in some cases, a photo opportunity may be missed.

[0005] Furthermore, when considering the incorporation of a simple autofocus device or a film winder device in order to improve the function of a film unit with a lens, power supply shortage is not possible with a single AA alkaline battery. Clearly, its practical use is extremely difficult. In addition, if two or more AA alkaline batteries are incorporated, such a problem can be solved. However, the space for assembling the batteries is increased, and the compactness which is an inherent feature of the film unit with the lens is impaired. On the other hand, Japanese Patent Laid-Open No.
No. 55 discloses that one battery unit is formed by connecting two batteries each having a rated output voltage of 1.5 V, the same diameter as that of an AA battery, and a length of 25 ± 2 mm in series, and using this as a power battery. It has been proposed to increase the amount of power supply per unit time by using the battery and to suppress the battery storage space to one AA battery. However, since the shape of the battery is cylindrical, a wasted space is always created. Furthermore, such a cylindrical battery is a metal container (battery can).
, Which has the disadvantage of increasing the weight, which is disadvantageous for reducing the size and weight. In addition, 5-83
No. 759 discloses that a plate-shaped rechargeable battery is disposed between the printed circuit board of the strobe unit and the unit main body. However, in this position, a space for accommodating the battery is limited and a sufficient electrode area is obtained. The required capacity, high current characteristics, and low temperature characteristics cannot be obtained.

The present invention has been made in view of the above circumstances, and provides a battery unit capable of increasing the amount of power supply per unit time and reducing the size and weight, and a film unit with a lens using the same. With the goal.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a lens having a built-in power source battery for supplying power to the strobe device, while incorporating a photographing mechanism and a strobe device in a unit body pre-loaded with a film. This is achieved by a film unit with a lens, wherein a thin battery unit is used as the power supply battery.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below, but the present invention is not limited thereto. (1) In a film unit with a lens in which a photographing mechanism and a strobe device are incorporated in a unit main body in which a film is loaded in advance, and a power battery for supplying power to the strobe device is incorporated, a thin battery unit is used as the power battery. A film unit with a lens, characterized in that it is used. (2) The film unit with a lens according to item 1, wherein the power supply battery is a thin battery unit having an open circuit voltage of 2 V or more and 30 V or less. (3) The film unit with lens according to item 1 or 2, wherein the power supply battery is a thin battery unit in which a plurality of unit cells are connected or stacked in parallel and / or series. (4) The lens according to any one of Items 1 to 3, wherein the power battery is a thin battery unit having a thickness of 0.1 mm to 8 mm and an area of 1.1 cm ^{2 to} 50 cm ^2. With film unit. (5) The lens-equipped film unit according to any one of (1) to (4), wherein the power supply battery is mounted inside the back cover of the lens-equipped film unit.

The type of battery used in the present invention may be a primary battery or a secondary battery. In the case of a primary battery, specifically, a battery having an aqueous electrolyte such as a manganese battery or an alkaline manganese battery, or a battery having a non-aqueous electrolyte such as a lithium manganese battery or a lithium fluorinated graphite battery is preferable. In the case of a secondary battery, specifically, a battery having an aqueous electrolyte such as a nickel cadmium (NiCd) battery or a nickel hydrogen battery or a battery having a non-aqueous electrolyte such as a lithium ion battery is preferable. Specifically, Patent Publication No. 26
No. 92816.

The form of the battery used in the present invention is preferably thin, preferably rectangular or square, but may be any shape according to the film unit body with lens. The thickness is preferably from 0.1 mm to 8 mm, particularly preferably from 0.1 mm to 5 mm. Further, the thickness is preferably 0.1 mm or more and 3 mm or less. The area is preferably from 1.1 cm ^{2 to} 50 cm ² ,
In particular, it is preferably from ² cm ^{2 to} 40 cm ² . Moreover,
It is preferably from 3 cm ^{2 to} 30 cm ² . The open circuit voltage of the battery used in the present invention is preferably 2 V or more and 30 V or less, but in order to achieve this, batteries of less than 2 V may be combined in series. A more preferable open circuit voltage is 3 V or more and 20 V or less. In addition, unit cells may be connected in parallel in order to improve electrode suitability by increasing the electrode area, or a combination of series and parallel may be used. The location inside the lens-equipped film unit main body for accommodating the thin battery of the present invention may be any position, and examples thereof include a rear cover portion on the back side of the main body, and an upper or lower portion of the film unit main body. Alternatively, a thin battery may be processed into a curved shape and placed around the film cartridge. A particularly preferred location is inside the rear cover on the back of the body.

[0011]

The present invention will be described in more detail with reference to specific examples, but the present invention is not limited to the examples unless it exceeds the gist of the invention.

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. A positive electrode mainly composed of manganese dioxide, a negative electrode mainly composed of zinc, and two unit cells in which an electrolyte composed mainly of an aqueous solution of potassium hydroxide were stacked in series, a thickness of 2 mm, a length of 30 mm,
A thin (sheet type) battery (battery of the present invention) having a width of 70 mm was prepared (FIG. 1). The open circuit voltage of this battery was 3.2V. FIG. 2 shows the appearance of a film unit with a lens using the battery unit of the present invention. The main body of the film unit is mainly made of plastic, incorporates a simple photographing mechanism and a strobe, and is loaded with a 135 film with a cartridge in advance so that the user cannot take it out. FIG. 3 is an exploded perspective view of the film unit with a lens according to the present invention. Film unit body 3
Are an exposure unit 4 incorporating a shutter mechanism and a film unwinding mechanism, a strobe unit 5, a patrone 6, a photographic film 7 drawn out of the patrone 6 and a roll form, and a patrone chamber 10 and a film chamber 11 for accommodating these, respectively. A main body 12 in which a winding knob 15 is rotatably mounted on an upper part of the patrone chamber 10;
A front cover 13 in which a release button 16 and a strobe switch 17 are integrally formed, and a rear cover 1 in which bottom covers 18 and 19 of a patrone chamber 10 and a film chamber 11 are integrally formed.
4 The sheet-type battery 1 is housed inside a rear cover of the film unit 2 with a lens. Each part is made of an integrally molded product by injection molding of a plastic resin, and is assembled by nail coupling.

After assembling the exposure units 4 on the front surface of the main body 12, a front cover 13 is attached so as to cover them, and the shutter mechanism and the film winding preventing mechanism are protected by the front cover 13. After storing the patrone 6 and the photographic film 7 in the patrone room 10 and the film room 11, respectively, the rear cover 14 is incorporated into the back of the main body 12, and the patrone room 10 and the film room 11 are light-tightly closed. . The winding knob 15 is covered by the upper surface of the front cover 13. The hoisting knob 15 has an opening 25
And the surface 15a of the opening 2
It becomes exposed from 5. For comparison, a single AA alkaline battery, which is a conventional power battery, was also prepared in the bottom of the film unit body.

A continuous strobe light emission test was performed on the above-described film unit with a lens equipped with the battery of the present invention and the film unit with a lens equipped with an AA battery for comparison. The time from the start of the strobe charging operation to the completion of charging (charging time) was repeatedly measured, and the charging times of the second shot and the 50th shot were compared. After charging was completed, the strobe was fired to return to an uncharged state, and the next measurement was performed after a pause. The measurement interval at this time was a total of 30 seconds for the charge time and the pause time. I made it. Test at 25 ° C, -1
The test was performed at a temperature of 0 ° C. and −20 ° C. Table 1 shows the results.

[0015]

[Table 1]

The shorter the time required for charging during flash photography, the better. Therefore, as is clear from Table 1, the sheet-type battery of the present invention is superior to the case of one AA alkaline battery. This tendency is not only at the initial shot (second shot) but also at the 50th shot, and the charging time difference between the present invention and the comparative example is further increased. Further, the difference in charging time at low temperatures (-10 ° C, -20 ° C) was further increased, indicating that the present invention was excellent. Further, the total weight of the film unit with the lens was 85% in the comparative example.
It was shown that the weight can be reduced from g to 73 g.

Example 2 A film unit with a lens of the present invention was prepared in the same manner as in Example 1 except that the following battery of the present invention was used as a thin battery, and a continuous strobe light emission test was performed in the same manner as in Example 1. went. A positive electrode sheet in which a 20 μm-thick positive electrode mixture layer mainly composed of manganese dioxide was formed on a positive electrode current collector in which conductive carbon black was coated on a 50 μm-thick polyester film, and further thereon The polymer solid electrolyte layer has a thickness of 15% of a mixture of a polymer of monoester methacrylate represented by the formula (I) and LiClO _4.
A μm layer was provided. Next, aluminum was vapor-deposited on the polymer solid electrolyte by a vacuum vapor deposition method to provide a metal thin film layer as a negative electrode. A thin (sheet type) battery (battery of the present invention) having a thickness of 0.5 mm, a length of 30 mm, and a width of 70 mm was prepared by laminating two sets of the unit cells in series.

[0018]

Embedded image

The open circuit voltage of this battery was 2.8V.
As a result of performing a continuous strobe light emission test in the same manner as in Example 1,
As is clear from Table 1, it was better than the comparative example. It was also found that the total weight of the film unit with the lens was reduced to 69 g.

[0020]

As described above, according to the present invention, it is possible to shorten the charging time of the strobe and reduce the weight of the film unit with the lens.

[Brief description of the drawings]

FIG. 1 is a diagram of a sheet-type battery of the present invention.

FIG. 2 is an external perspective view of a film unit with a lens including the battery unit shown in FIG.

FIG. 3 is an exploded perspective view of a film unit with a lens including the battery unit shown in FIG. 1;

Claims (5)

[Claims] 1. A film unit with a lens in which a photographing mechanism and a strobe device are incorporated in a unit main body loaded with a film in advance, and a power battery for supplying power to the strobe device is built-in. A film unit with a lens, characterized by using a unit. 2. The power supply battery has an open circuit voltage of 2 V or more and 30 or more.
The lens-equipped film unit according to claim 1, wherein the battery unit is a thin battery unit of V or less. 3. The film unit with a lens according to claim 1, wherein the power supply battery is a thin battery unit in which a plurality of unit cells are connected or stacked in parallel and / or series. 4. The power supply battery has a thickness of 0.1 mm or more and 8 m or more.
m or less, the lens-fitted film unit according to claim 1, wherein the area is a thin battery unit of 1.1 cm ² or more 50 cm ² or less. 5. The lens-equipped film unit according to claim 1, wherein the power supply battery is mounted inside a back cover of the lens-equipped film unit.