JPH06266055A - Cell unit and film unit with lens using said unit - Google Patents

Abstract

PURPOSE:To increase the supply amt. of electric power per unit time and to suppress the housing space for dry cells to a volume of one dry cell by connecting two dry cells having the same diameters as that of AA type dry cell and a specified length and a specified rated voltage in series to constitute one cell unit. CONSTITUTION:The cell unit 25 is composed of two rod-like short cells 40, 50 connected in series. The cell 40 has an anode at the top end 41 and on the outer wall 42 and a cathode on the rear end 43. The cell 40 has 1.5V rated voltage, 14+ or -0.5mum diameter D same as that of AA type alkali cell, and 25+ or -2mm length H. The cell 50 has the same structure as that of the cell 40. The cell unit 25 is equipped with an anode terminal 30 on the outer wall of the cell 40 which is disposed in the front side and a cathode terminal 31 on the rear face 53 of the cell 50 disposed on the rear side. Two cells 40, 50 are coverd with a shrink film 60 to make one body to expose only the anode terminal 30 and the cathode terminal 31.

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 amount of power supply per unit time and a lens-fitted film unit using the battery unit.

[0002]

2. Description of the Related Art A film unit with a lens "Sharan-run Hi" (product name) and a film unit with a built-in flash "Shaun-run Flash" are designed by the applicant so that photographers can easily enjoy taking pictures at any time. , "Sharp Run Flash Panorama" (brand name), etc. are widely marketed. Such a lens-fitted photo film unit is, for example, as known from Japanese Patent Publication No. 32-32615, in which a photo film is built in advance in a unit body having a simple photo-taking mechanism. You can request DPE for each film unit as well.

The lens-equipped film unit with a built-in strobe has a built-in battery for supplying electric power to the strobe device. Up to now, the rated output voltage is 1.5.
A single AA alkaline battery of V is used. This AA alkaline battery is widely used as a power battery in various portable devices, is inexpensive, easily available, and easy to handle.

[0004]

However, as the power source battery for the film unit with a built-in strobe lens, the single AA alkaline battery described above tends to provide insufficient power supply per unit time. I mean,
This is because it takes about 6 seconds even for the first time and 7.5 seconds for the 30th time to fully charge the main capacitor for strobe light emission before stroboscopic photography, and it often happens that a shutter chance is missed.

Further, in order to improve the function of the lens-fitted photo film unit, in consideration of incorporating a simple autofocus device or a film winder device, a single AA alkaline battery causes insufficient power supply. Obviously, its practical application is extremely difficult. Although this problem can be solved by incorporating two or more AA alkaline batteries, the battery assembling space is increased and the compactness which is the original feature of the lens-fitted film unit is hindered.

The present invention has been made in view of the above circumstances, and a battery unit capable of increasing the amount of power supply per unit time and suppressing the battery storage space to one AA battery. It is an object to provide a film unit with a lens using this.

[0007]

In order to achieve the above-mentioned object, the present invention connects two batteries in series with a rated output voltage of 1.5 V and the same diameter as the size AA battery and a length of 25 ± 2 mm. Then 1
Each battery unit is configured and used as a power battery. In addition, one rear end surface of the batteries connected in series is a cathode,
The front end surface and the peripheral surface of the other battery are preferably used as the anode.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows the appearance of a lens-fitted film unit using the battery unit of the present invention. The unit main body 10 is mainly made of plastic and has a simple photographing mechanism and a strobe incorporated therein, and a 135 film with a cartridge is preloaded so that it cannot be taken out by a user. The unit main body 10 is used while being covered with a paper box 11 whose outer surface is printed to improve its appearance. Therefore, the paper box 11 is formed with openings for exposing the taking lens 12, the viewfinder 13, the shutter button 14, the film winding knob 15, the film counter window 16, the strobe light emitting unit 17, the strobe charging switch 18, etc. to the outside. ing.

FIG. 3 shows the unit body 10 with the bottom plate removed. The unit main body 10 includes a film roll chamber 20 for storing the photographic film in a roll shape,
A patrone chamber 21 for accommodating the patrone is provided. Next to the film roll chamber 20, a strobe device 2 is provided.
2 are arranged, the film roll chamber 20 and the patrone chamber 2
An exposure chamber 23 for exposing the photographic film is formed between the exposure chamber 23 and 1. Further, below the exposure chamber 23, a battery chamber 26 that houses a battery unit 25 for strobe light emission is formed.

A strobe device 22 is provided in the battery chamber 26.
A part of the substrate 27 is arranged so as to project from the. The substrate 27 in the battery chamber 26 has the anode terminal 3 of the battery unit 25.
An anode contact piece 32 that contacts 0 and a cathode contact piece 33 that contacts the cathode terminal 31 are provided.

FIG. 1 shows the structure of a battery unit. The battery unit 25 is configured by connecting two rod-shaped and short batteries 40 and 50 in series. Battery 4
In No. 0, the anode is arranged on the front end face 41 and the peripheral face 42, and the cathode is arranged on the rear end face 43. Moreover, the rated output voltage of the battery 40 is 1.5 V, and the diameter D is the same as that of the AA alkaline battery.
It is preferable that the length H is about ± 0.5 mm and the length H is about 25 ± 2 mm. Since the battery 50 has the same configuration, only the reference numeral is attached.

The battery unit 25 has an anode terminal 30 on the peripheral surface 42 of the battery 40 arranged on the front side and a cathode terminal 31 on the rear end surface 53 of the battery 50 arranged on the rear side.
The two batteries 40 and 50 are integrally covered with a shrink film 60 which exposes only the anode terminal 30 and the cathode terminal 31 and shrinks when irradiated with, for example, ultraviolet rays. The thickness of the shrink film 60 is 100 μm.
It is good to make it about.

FIG. 5 is a graph showing the charging characteristics of the battery unit having the above-mentioned configuration, which is measured repeatedly by the time from the start of the strobe charging operation to the completion of the charging. In addition, after charging is completed, the strobe is turned on to return to the uncharged state, and after the rest time, the next measurement is performed. The measurement interval at this time is the sum of the charge time and the rest time is 30 seconds. I tried to be. For comparison, in addition to the case of one AA alkaline battery which is a conventional power supply battery,
The measurement results when various batteries having a rated output voltage of 1.5 V and different lengths are connected in series are also shown. The strobe device used for the measurement is the conventional AA alkaline battery 1
Only for the case of the book, it is for 1.5V, and 3 for measuring other batteries.
Used for V. Also, "1/3" battery and "2/3"
The battery is 1/3 times and 2/3 times as long as the AA alkaline battery.

The shorter the time required for charging at the time of flash photography, the better. Therefore, in FIG. 5, the lower the characteristic graph is, the better the charging performance is. Therefore, in order to improve the charging performance as compared with the conventional one, the charging performance is better than that of the case of one AA alkaline battery. It is necessary to select the battery whose characteristic graph is located on the lower side. "1/3" battery and 2 which make the length when connected in series shorter than that of one conventional AA alkaline battery and 2
With the 2.5 mm battery, the initial charging time is almost the same as the conventional one, but the required time increases rapidly as the number of times of charging is increased, and it can be said that the charging performance is inferior to the conventional one. On the other hand, AA type batteries, AAA type batteries, "2/3" batteries,
With the 27.5 mm battery, the characteristic graph is always lower than the characteristic graph of the conventional battery, and it can be said that the charging performance is superior to the conventional one. However, when these are connected in series, the length becomes much longer than that of one AA alkaline battery, and the unit main body 10 cannot be accommodated in the lens-fitted film unit. It is not suitable as a power supply battery to be used.

Next, the operation of the present invention will be described. When the unit body 10 is assembled, the battery unit 25 is inserted into the battery chamber 26. At this time, since the two batteries 40 and 50 forming the battery unit 25 are integrally covered by the shrink film 60, they can be easily inserted into the battery chamber 26 as in the case of handling one battery. can do. Further, in the battery unit 25, the anode terminal 30 is provided on the peripheral surface of the battery, and the anode contact piece 3 in the battery chamber 26 is provided.
Since 2 is also provided so as to be in contact with the peripheral surface of the battery, an AA type battery having a similar outer shape is not inserted by mistake. Similarly, the battery unit 25 will not be accidentally inserted into a lens-fitted film unit that uses AA batteries.

When a photographer purchases a lens-fitted film unit with a built-in flash and takes a photograph, the photographer first rotates the film winding knob 15 until the rotation of the film winding knob 15 is locked, and charges the shutter to take a photograph. Prepare.

When stroboscopic photography is performed, the stroboscopic charging switch 18 provided on the front surface of the lens-fitted film unit is pressed to charge the main condenser for stroboscopic light emission. At this time, in the battery unit 25, the batteries 40 and 50 having a rated output voltage of 1.5V are connected in series, so that power is supplied from the battery unit 25 at a voltage of 3.0V. Then, the blinking cycle of the neon lamp that notifies the charging status becomes short, and the charging is completed when the lighting is changed to lighting approximately 3 seconds after the pressing of the strobe charging switch 18 is started. After the charging is completed, the subject is framed through the finder 13 to an appropriate position and the shutter button 14 is operated, and the strobe light emitting section 17 emits light in synchronization with this shutter release, and the photographing screen on the photographic film is exposed.

After one photographing is completed, the film winding knob 15 is operated to wind the exposed photographic film around the cartridge chamber 21 side. When the sprocket that rotates following the feeding of the photo film detects one frame fixed length feeding,
The film winding knob 15 is locked to notify that the next photographing preparation is completed. Then, the shooting can be performed again.

The pressure of the cathode contact piece 33 may change due to vibrations or shocks applied while the lens-fitted film unit is being carried or during photography, or the environment may change, and the power supplied from the battery unit 25 may fluctuate. . However, since the anode terminal 30 is located on the peripheral surface of the battery unit 25, the load on the cathode contact piece 33 is reduced, the pressure change is suppressed, and the fluctuation of the supplied power can also be suppressed. Then, since the battery unit 25 constantly supplies a stable power, even if the battery is repeatedly charged for flash photography, the charging time does not increase sharply, and the 30th charging takes about 5 seconds. Complete.

When the exposure is repeated as described above and "0" appears in the film counter window 16 for displaying the number of remaining films, it means that the whole frame photographing is completed. Then, take the film unit with lens to a development shop and request a DPE.
Print processing is performed and a print photograph is obtained.

In the above embodiment, the two batteries are integrally connected by the shrink film, but as shown in FIG. 4, the male screws 71, 8 are attached to the front end faces of the batteries 70, 80.
1. Form the female screws 72 and 82 having the same inner diameter as the outer diameters of the male screws 71 and 81 on the rear end surface, and screw them into the battery 7
You may make it connect 0 and 80. According to this embodiment, the two batteries 70 and 80 are engaged with each other by a pair of screws, so that the batteries can be connected more reliably and stable power supply can be performed.

[0022]

As described above, according to the present invention, the rated output voltage is 1.5 V, the diameter is the same as the AA battery, and the length is 25 ± 2 m.
Since the two m batteries are connected in series, the amount of power supplied per unit time can be doubled while the size is almost the same as that of the conventional AA type battery. Furthermore, since the anode terminal is provided on the peripheral surface of the battery, it can be prevented from being misused with an AA battery having a similar outer shape.

[Brief description of drawings]

FIG. 1 is a sectional view of a battery unit of the present invention.

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

FIG. 3 is a bottom view showing a state where the bottom plate of the lens-fitted film unit shown in FIG. 2 is removed.

FIG. 4 is a cross-sectional view showing another connection method of two batteries.

FIG. 5 is a graph showing the relationship between the number of times of repeated charging of various batteries and the charging time.

[Explanation of symbols]

 10 unit main body 22 strobe device 25 battery unit 40,50 battery 41,51 front end surface 42,52 peripheral surface 43,53 rear end surface D diameter H length

Claims (3)

[Claims] 1. A battery unit characterized in that two batteries having a rated output voltage of 1.5 V and the same diameter as a size AA battery and a length of 25 mm ± 2 mm are connected in series and integrally connected. 2. The battery unit according to claim 1, wherein one rear end surface of the batteries connected in series is a cathode and the front end surface and the peripheral surface of the other battery are an anode. 3. A lens-fitted film unit in which a photographing mechanism and a strobe device are incorporated in a unit main body in which a film is preliminarily loaded, and a power supply battery for supplying electric power to the strobe device is built in. 25m long with the same diameter as type 3 battery
A film unit with a lens comprising a battery unit in which two m ± 2 mm batteries are connected in series and integrally connected.