JPH1031257A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain space saving by combining an improved battery and members such as a motor, etc., and efficiently arranging them, as for a camera using the improved battery which can be repeatedly charged/discharged. SOLUTION: A main battery 34 and a main capacitor 36 are vertically arranged on the same axis, and also, an auxiliary battery 40 is arranged so as to be parallel and adjacent to the main battery 34. Besides, the positive electrode armature of the auxiliary battery 40 and the positive electrode armature of the main battery 34 are formed of one armature member 41, and the armature member 41 is used in common. Besides, by storing the main battery 34 inside the auxiliary battery 40, a battery cover 42 is used in common. Thus, the miniaturization of the camera is accomplished, and also, the number of parts is reduced. And the auxiliary battery 40 which must be frequently replaced as compared with the main battery 34 can be easily attached/detached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera having a power supply device capable of supplying a large capacity and a large current to a circuit such as a strobe or a film winding means using a rechargeable battery of a metal lithium series. About the camera.

[0002]

2. Description of the Related Art A conventional camera uses a manganese or lithium primary battery as a power source and a secondary battery such as a NiCd battery as a power source. Also, a power supply device for charging a secondary battery built in a camera using a solar cell has been proposed (JP-A-63-91641). However, a manganese primary battery has a low voltage, and therefore requires a plurality of batteries to obtain a high voltage, and it is difficult to obtain a large capacity current. However, there is a problem that it is not suitable for a camera which consumes a large current in recent years. on the other hand,
Lithium-based primary batteries have the advantage of being able to obtain high voltage and large capacity current, but the batteries themselves are expensive and environmental problems at the time of disposal have been pointed out. Furthermore,
Lithium-based primary batteries are sometimes more difficult to obtain in travel destinations or overseas than manganese or alkaline primary batteries. In such cases, use the camera when the batteries are exhausted. There is a problem that it is necessary to give up or to carry a spare battery in advance in order to prevent such a situation, which is complicated.

[0003] Although charging of a primary battery is generally prohibited, as described in detail in JP-A-7-130400 and JP-A-8-84619, a lithium-based primary battery is described. Even under a certain condition, the battery can be charged safely. The lithium batteries (especially metal lithium batteries) described in these publications are charged at a time rate current of about 2 μC to 5 mC when the remaining amount is within the range of 5 to 95% of the capacity C. By doing so, without impairing the properties of the primary battery,
Charge and discharge can be repeated. In each of the above publications,
There is disclosed a method in which the lithium battery and the solar battery are combined and applied to a camera, and the lithium battery is charged by electric power generated by the solar battery.

[0004] In the present specification, a battery having both characteristics of a primary battery and characteristics of a secondary battery is referred to as an "improved battery".
I will call it.

[0005]

However, in a power supply device having a solar cell, the solar cell itself is expensive, and the temperature of the camera increases due to the need to expose the camera to high illuminance during charging. There was a risk of failure. Furthermore, when the secondary battery (improved battery) is rapidly consumed, the problem that the camera cannot be used has not been solved because the amount of power generated by the solar battery is small and it takes time to charge.

From such a viewpoint, there has been proposed a power supply device for charging the improved battery with an auxiliary battery such as an AA battery (see Japanese Patent Application No. 7-273050). When incorporating the improved battery into the camera, it is desirable to reduce the size and cost of the camera by saving space and reducing the number of parts while considering the relationship with other members constituting the camera.

The present invention has been made in view of such circumstances, and provides a small-sized camera using a battery (improved battery) which can be repeatedly charged and released, and a camera which is advantageous in terms of cost. With the goal.

[0008]

According to a first aspect of the present invention, in order to achieve the above object, when the self-discharge rate of the primary battery is substantially equal and the remaining amount is equal to or greater than a predetermined capacity, the discharge and recharge is repeatedly performed. A possible main battery, an auxiliary battery that supplies charging energy to the main battery, and a booster that boosts an output voltage of the auxiliary battery, and supplies power to the main battery via the booster to supply the main battery with power. A charging means for charging a battery, a film transport motor supplied with power from the main battery and transporting the film, and a main capacitor for storing electric charge for strobe light emission; the auxiliary battery and the film transport motor , And at least one of the main capacitors and the main battery are characterized in that axes indicating their respective longitudinal directions are arranged on the same axis.

According to the present invention, at least one of the auxiliary battery, the film transport motor, and the main capacitor is arranged on the same axis as the axis indicating the longitudinal direction of the main battery. A plurality of members including the main battery can be effectively stored. Thereby, downsizing of the camera can be achieved. The invention according to claim 2 is an auxiliary battery,
At least one of the film transport motor and the main condenser is adjacent to the main battery, and their longitudinal axes are arranged in parallel. Such an arrangement can also save space. Particularly, at least one of the auxiliary battery, the film transport motor, and the main capacitor is arranged on the same axis as the axis indicating the longitudinal direction of the main battery, and other than the one arranged on the same axis of the main battery. By arranging in parallel with the axis indicating the longitudinal direction of the main battery, further space saving can be achieved.

According to a third aspect of the present invention, at least one of the auxiliary battery, the film transport motor, and the main capacitor is arranged adjacent to the main battery, and the axes indicating their longitudinal directions are arranged in directions orthogonal to each other. It is characterized by doing. According to the present invention, at least one of the auxiliary battery, the film transport motor, and the main capacitor can be combined with the main battery to achieve an efficient arrangement without waste. Such an arrangement is particularly effective when the height of the main battery is relatively small.

Further, by efficiently arranging at least one of the auxiliary battery, the motor for transporting the film, and the main capacitor in combination with the main battery, the contact piece can be shared and the number of parts can be reduced. There is an advantage that it can be reduced. Thereby, assembly becomes easy, and cost reduction can be achieved. Furthermore, there is an advantage that the contact piece can be omitted by directly contacting at least one of the positive electrode and the negative electrode of the main battery with the printed board.

In addition, since the main battery storage chamber for storing the main battery is provided at the back of the auxiliary battery storage chamber for storing the auxiliary battery, the battery cover can be shared, and the auxiliary battery having a higher replacement frequency than the main battery can be used. There is an advantage that the battery can be easily attached and detached.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the camera according to the present invention will be described below in detail with reference to the accompanying drawings. FIG.
3 is an internal perspective view of the camera to which the present invention is applied, FIG. 1 is a front view, FIG. 2 is a top view, and FIG. 3 is a left side view. Reference numeral 12 at the center of the camera 10 shown in FIG. 1 denotes a lens barrel storage section for storing a photographing lens barrel (not shown), and a film cartridge (patrone) (not shown) is provided on the right side of the lens barrel storage section 12. Is formed, and a film take-up chamber 16 is provided on the left side.
Are formed. The upper part of the cartridge chamber 14, that is,
A flash device 18 is provided at the upper right corner of the front of the camera. On the left side of the strobe device 18, an AF light projecting unit 20, an AF light receiving unit 22, and a finder unit 24 are provided in this order.

The cartridge chamber 14 is provided with a spool drive shaft 26 which engages with a spool of a film cartridge loaded in the chamber, and a detection switch (not shown) for detecting the presence or absence of the film cartridge. I have. On the other hand, the film take-up chamber 16 is provided with a take-up spool 28 for taking up the film sent from the film cartridge. The take-up spool 28 is formed in a hollow cylindrical shape, and has a film transport motor 30 incorporated therein. The rotational force of the film transport motor 30 is transmitted to the take-up spool 28, and the gear trains 32A, 32B,.
The power is transmitted to the spool drive shaft 26 via 32I and 32J.

That is, when the film transport motor 30 rotates forward, the film is sent out from the film cartridge loaded in the cartridge chamber 14 and the take-up spool 2 is rotated.
8 When the film transport motor 30 is reversed, the spool drive shaft 26 of the cartridge chamber 14 is rotated.
Is reversed, and the film wound on the winding spool 28 is rewound into the film cartridge. The rotation of the film transport motor 30 is controlled by the camera controller, and the film is fed one frame (winding up). When the end of the film is detected after all the frames of the film have been photographed, the film transport motor 30 is driven in reverse, and the drawn-out film is automatically rewound into the film cartridge.

A film rewind lever (not shown) is provided on the rear surface of the camera 10. By operating the film rewind lever, the film can be rewound to the cartridge before the completion of all frame shooting. I can do it. On the left side of the take-up spool 28, a main battery 34 for supplying electric power to various circuits in the camera and a main capacitor 36 for a strobe are vertically arranged vertically. That is, the main batteries 34 are arranged on the same axis on the columnar main capacitor 36 for storing electric charges for strobe light emission. In addition, a partition plate 38 is provided between the main battery 34 and the main capacitor 36.

The main battery 34 is a rechargeable battery dedicated to a camera with a small self-discharge, and is an improved battery having both characteristics of a primary battery and a secondary battery. Although the configuration of the main battery 34 will be described in detail later, for example, a battery having a self-discharge rate of 5% / year or less is used, and its voltage is 3.2 V when properly charged. The shape of the main battery 34 is not particularly limited, but is formed, for example, in the same shape as a current CR2-type battery.

An auxiliary battery 40 for supplying charging energy to the main battery 34 is disposed behind the main battery 34 and the main capacitor 36 (see FIG. 3). Auxiliary battery 40
Are arranged vertically in parallel with the arrangement direction of the main battery 34 and the main capacitor 36, and the positive electrode of the auxiliary battery 40 and the positive electrode of the main battery 34 are in contact with a common contact piece member 41. Also, a battery cover 4 is provided at the rear corner of the camera 10.
2 is provided on the shaft 42A so as to be openable and closable.
The auxiliary battery 40 is stored in an auxiliary battery storage chamber formed inside the second battery 2. A main battery storage chamber for storing the main battery 34 is provided at the back of the auxiliary battery storage chamber. That is, by opening the battery cover 42, the auxiliary battery 40 stored in the auxiliary battery storage chamber can be taken out and replaced, and the main battery 34 disposed at the back is taken out with the auxiliary battery 40 taken out. You can do it.

The auxiliary battery storage chamber is, for example, one AA
A manganese-based AA battery is housed as the auxiliary battery 40. The auxiliary battery 40 is not limited to an AA battery, but may be a primary battery of another form. However, manganese-based AA batteries are widely used and can be easily obtained at low cost anywhere in the world. There are advantages.

In FIG. 1, reference numeral 43 denotes a camera control circuit, reference numeral 44 denotes a boosting circuit for charging, and reference numeral 46 denotes a mounting space for a charging circuit for the main capacitor 36. The power supply of the camera 10 is the main battery 3
4. The main battery 34 and the auxiliary battery 40 are electrically connected to the booster circuit, the control circuit, and the like via the contact members 41, 47, and 48, although not shown in detail. Connected. Then, power is supplied from the main battery 34 to the strobe device 18, the film transport motor 30, the zoom motor 49, the control circuit 43, and the like.

Next, the main battery will be described. Main battery 3
4, the improved battery is used as described above. As the positive electrode active material of the improved battery, manganese dioxide is preferable, and particularly, manganese dioxide synthesized by electrolysis and manganese dioxide chemically synthesized are preferable. As a material that can be used as the negative electrode active material, lithium metal and lithium alloy (any metal that forms an alloy with lithium may be used, but Al, Mn, Sn, Mg, Cd, and In are particularly preferable, and an alloy containing Al is particularly preferable). Preferably, it is used.

A conductive agent, a binder, a filler and the like can be added to the electrode mixture. The conductive agent may be any electronic conductive material that does not cause a chemical change in the configured battery. The addition amount is not particularly limited,
It is preferably from 1 to 50% by weight, particularly preferably from 2 to 30% by weight. As the binder, a polysaccharide, a thermoplastic resin, a polymer having rubber elasticity, or a mixture thereof can be used. The amount of the binder added is not particularly limited, but is preferably 1 to 50% by weight, and particularly preferably 2 to 30% by weight.

As the filler, any fibrous material that does not cause a chemical change in the constructed battery can be used. Usually, fibers such as olefin-based polymers such as polypropylene and polyethylene, glass, and carbon are used. Although the amount of the filler is not particularly limited,
~ 30% by weight is preferred. The non-aqueous electrolyte is generally composed of a solvent and a lithium salt (anion and lithium cation) dissolved in the solvent, and comprises propylene carbonate and / or butylene carbonate and 1,2-dimethoxyethane and / or diethyl carbonate. An electrolyte containing LiCF ₃ SO ₃ , LiClO ₄ , LiBF ₄ and / or LiPF ₆ in the mixed solution of the carbonate is preferable. The amount of these electrolytes to be added to the battery is not particularly limited, but may be used in a required amount depending on the amounts of the positive electrode active material and the negative electrode active material and the size of the battery.

Although the volume ratio of the solvent is not particularly limited,
In the case of a mixture of propylene carbonate and / or butylene carbonate to 1,2-dimethoxyethane,
0.4 / 0.6 to 0.6 / 0.4 is preferred. The concentration of the supporting electrolyte is not particularly limited, but may be 0.1 to 1 liter of the electrolytic solution.
2-3 moles are preferred. The metal lithium-based battery having such a configuration has a self-discharge rate as small as that of a primary battery, and when discharged from a fully charged state to below a specified energy value, the function as a storage battery thereafter rapidly increases. It has the property of decreasing to With the capacity in a fully charged state as 100 as a reference, the amount of discharged energy is represented by the usage rate with respect to the total energy,
I will call it.

According to the experiment, when the discharge and the charge are repeated within the range where the depth of discharge does not exceed 5%, the deterioration of the main battery is small, the cycle life is large, and the photographing of 3000 shots or more is sufficiently possible. . On the other hand, when used at a depth of discharge of 30%, the performance of the main battery as a storage battery is reduced, and the cycle life is shortened. In this case, only about 1000 shots can be repeatedly shot. The deeper the depth of discharge, the shorter the cycle life becomes.The deeper the depth of discharge, the lower the performance as a storage battery, and the smaller the electrical capacity that can be stored in the main battery by recharging. Cycle life is also reduced.

That is, it is desirable that the main battery be used so as to be repeatedly charged and discharged in a range of a shallow depth of discharge. Therefore, when this improved battery is actually used, a proper depth of discharge is set in accordance with the setting of the limit of use as a camera, and management is performed so that discharge and charge are repeated so as not to exceed the range of the depth of discharge. There is a need to. FIG. 4 shows an example of the configuration of a charging circuit for charging main battery 34 with auxiliary battery 40. The charging circuit 50 includes a charging control circuit 52 and a boosting circuit 54 as shown in FIG.
The charging control circuit 52, respectively detects a voltage V _CR and the voltage V _E of the auxiliary battery 40 of the main battery 34, for example, a main battery 34
The voltage V _CR, becomes smaller than the voltage value 3.2 V of the full charge state (V _CR <3.2V), and voltage V _E of the auxiliary battery 40
When V _E ≧ 0.9 V (the end voltage of the auxiliary battery 40), the booster circuit 54 is operated to charge the main battery 34.

On the other hand, the charging control circuit 52 determines that the main battery 34 is
When fully charged (voltage V_CR= 3.2V)
 Or when the auxiliary battery 40 is exhausted and the voltage V of the auxiliary battery 40 is
_EIs V _EStops booster circuit 54 when <0.9V
Let it. Further, the charge control circuit 52 controls the remaining of the auxiliary battery 40.
In order to display the amount and the like on the liquid crystal panel 60, the auxiliary battery 4
A signal indicating a voltage of 0 is output to the display control circuit 62.

As described above, the display control circuit 62 receives the signal indicating the voltage of the auxiliary battery 40 from the charge control circuit 52, the signal from the film counter indicating the remaining amount of the film, the strobe switch, the shutter button, and the self-timer. The signal from the switch etc. is added,
The required display is performed on the liquid crystal panel 60 based on these input signals. The charging control circuit 52 is supplied with driving power from the main battery 34.

Next, the boosting circuit 54 will be described. FIG. 5 is a circuit diagram showing an example of the booster circuit. As shown in the figure, the booster circuit 54 is of a push-pull type, and the power source of the auxiliary battery 40 is
2, the current is converted into alternating current by the transistors Q 1 and Q 2 which are alternately turned on by the transistor T 2, and the voltage is boosted via the transformer T.
By rectifying by 5, the DC voltage is converted to a DC voltage necessary for charging the main battery 34.

Here _, assuming that the number of turns on the primary side and the secondary side of the transformer T is n _{1 and} n ₂ , the voltage V on the primary side of the transformer T is
₁ and the voltage V ₂ on the secondary side are expressed by the following equation (1):

[0031]

## EQU1 ## There is a relationship of V ₁ / V ₂ = n ₁ / n ₂ (1). On the other hand, the voltages V ₁ and V ₂ required on the primary side and the secondary side of the transformer T are:

[0032]

## EQU2 ## V ₁ = 0.9−V _DS = 0.7 [V] (Min) (2)

[0033]

V ₂ = 3.2 + 0.7 × 2 + 0.5 = 5.1 [V] (3) (where 0.9: final voltage of auxiliary battery 40 V _DS : saturation voltage between drain and source of transistors Q1 and Q2 3.2: The maximum voltage of the main battery 34 is 0.7 × 2: the voltage drop in the rectifier circuit 55). Therefore, the turns ratio n ₂ / n ₁ of the transformer T is

[0034]

## EQU4 ## n ₂ / n ₁ = V ₂ / V ₁と 7.3 (4) As described above, the charging circuit 50 shown in FIG. 4 transfers the charging energy of the auxiliary battery 40 to the main battery 34 every time the voltage V _CR of the main battery 34 becomes V _CR <3.2 V, and Charge. Then, when the main battery 34 is fully charged (when the voltage V _CR becomes 3.2 V), the charging operation is stopped.

After the main battery 34 is fully charged,
When the electric capacity of the main battery 34 decreases due to the use of the camera, the charging energy is transferred from the auxiliary battery 40. The electric capacity of the main battery 34 increases with the charging time, and the electric capacity of the auxiliary battery 40 decreases. Thus, the main battery 34
The energy of the auxiliary battery 40 is transferred to the main battery 34 in accordance with the energy consumption of the main battery 34, so that the main battery 34 is always kept in a state close to full charge.

By doing so, there is an advantage that the main battery 34 can be easily handled without fear of overdischarge deterioration. Further, since the main battery 34 is a lithium-based battery,
As compared with the auxiliary battery 40, a high voltage and a large current can be supplied to the camera, so that a camera requiring a large current can be supported, and the charging time of the strobe can be shortened.

Now, when the charging energy of the auxiliary battery 40 is transferred to the main battery 34 and the capacity of the auxiliary battery 40 reaches almost 0 (when the voltage of the auxiliary battery 40 reaches its final voltage 0.9V), thereafter, Unless you replace the auxiliary battery 40,
The charging energy is not supplied from the auxiliary battery 40 to the main battery 34. However, the main battery 34 has its voltage V
_{Since the CR} is maintained in a state of charge close to full charge, there is a certain amount of electricity that can be consumed (for example, an amount of electricity capable of taking 100 shots) until the voltage V _CR reaches a predetermined battery check level. doing. Therefore, the camera can be continuously used without immediately replacing the auxiliary battery 40 with a new one.

Also, when replacing the auxiliary battery 40, the auxiliary battery 40 may be an AA dry battery, and thus has an advantage that it can be easily obtained at low cost anywhere in the world.
Further, since the charging circuit 50 has the boosting circuit 54,
AA batteries that have been used in other devices can be used to some extent. In this embodiment, when the voltage V _CR of the main battery 34 falls below 3.2 V, the auxiliary battery 4
Although the zero charging energy is transferred to the main battery 34, the present invention is not limited to this, and charging may be started after the voltage of the main battery 34 reaches a predetermined voltage value (for example, 3.0 V). Alternatively, the number of shots after the state of full charge may be counted, and when the number of shots reaches a predetermined value (for example, 100 shots), the charging energy of the auxiliary battery 40 may be transferred to the main battery 34. However, in this case, the charge control circuit 62 needs to receive a signal indicating the number of shots from the camera.

According to the camera configured as described above, as described with reference to FIG.
6 are arranged vertically on the same axis and the auxiliary battery 40 is arranged in parallel with and adjacent to the main battery 34, so that the main battery 34 and the main capacitor 36 and the auxiliary battery 40 can be efficiently stored. Also, as described above, the auxiliary battery 4
By arranging the main battery 34 and the main battery 34 in parallel,
The positive electrode contact piece of the auxiliary battery 40 and the positive electrode contact piece of the main battery 34 can be formed by one contact piece member 41, and there is an advantage that the contact piece member 41 can be shared. This allows
The size of the camera can be reduced, and the number of parts can be reduced.

Further, by disposing the main battery 34 that does not need to be replaced deeply in the auxiliary battery 40 that needs to be replaced, the battery cover 42 can be shared and the battery cover 42 can be opened. Therefore, there is an advantage that the auxiliary battery 40 can be easily attached and detached. Next, the second embodiment of the present invention
An embodiment will be described.

FIG. 6 shows a main configuration of a camera according to a second embodiment of the present invention. FIG. 6 is an internal perspective view of the left side of the camera according to the second embodiment of the present invention, and the front view and the top view are omitted. In the following description, the same or similar members as those of the camera shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted.

In the camera 10 shown in FIG. 6, a column-shaped main capacitor 36 is vertically arranged on the left side of the take-up spool 28, and a main battery 34 is provided behind the main capacitor 36 (ie, on the left side in FIG. 6). And the auxiliary battery 40 and the main battery are arranged coaxially and vertically. The main battery 34 and the auxiliary battery 40 are arranged so that their positive electrodes face each other, and a partition plate 64 is provided between the main battery 34 and the auxiliary battery 40. The upper surface of the partition plate 64 is provided with a contact piece 41A to which the positive electrode of the main battery 34 contacts, and the lower surface of the partition plate 64 is provided with a contact piece 41B to which the positive electrode of the auxiliary battery 40 contacts. The contact pieces 41A and 41B are formed by bending one metal contact piece member 41 into a desired shape, and are attached so as to sandwich the partition plate 64 from both upper and lower surfaces.

According to this configuration, the main battery 34, the main capacitor 36, and the auxiliary battery 40 can be stored compactly, and the positive electrode contact piece 41A of the auxiliary battery 40 and the positive electrode contact piece 41B of the auxiliary battery 34 are combined into one. It can be formed by the contact piece member 41. Thereby, the size of the camera can be reduced, and the number of parts can be reduced.

Next, a third embodiment of the present invention will be described. FIG. 7 shows a third camera of the present invention.
2 shows a main configuration of the embodiment. FIG. 7 is an internal perspective view of the left side of the camera according to the third embodiment of the present invention, and the front view and the top view are omitted. In the following description, the same or similar members as those of the camera shown in FIGS. 1 to 3 are denoted by the same reference numerals, and description thereof will be omitted.

In the camera 10 shown in FIG. 7, a column-shaped main capacitor 36 is vertically arranged on the left side of the take-up spool 28, and the main battery 3 is provided below the main capacitor 36.
4 are arranged horizontally. That is, the axis indicating the longitudinal direction of the main capacitor 36 and the axis indicating the longitudinal direction of the main battery 34 are arranged to be orthogonal to each other. Also,
The auxiliary battery 40 is located on the left side of the main capacitor 36 in FIG.
Are arranged in parallel with the main capacitor 36. The negative electrode of the main battery 34 and the auxiliary battery 4
Each of the negative electrodes 0 comes in contact with the contact pieces 66A and 66B formed integrally with the common metal contact piece member 66.

According to this configuration, the main battery 34, the main capacitor 36, and the auxiliary battery 40 can be efficiently stored in a limited space, and the main battery 34 and the auxiliary battery 34 can use a common contact member. can do. Thereby, the size of the camera can be reduced, and the number of parts can be reduced. Next, a fourth embodiment of the present invention will be described.

FIGS. 8 to 10 are perspective views showing the inside of a camera according to a fourth embodiment of the present invention. FIG.
9 is a top view and FIG. 10 is a left side view. In addition, FIG.
The same or similar members as those of the camera shown in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted. In the camera shown in FIG. 8, a cylindrical main condenser 36 is disposed inside a take-up spool 28, and a film transport motor 30 and a main battery 34 are arranged vertically on the left side of the film take-up chamber 16 so as to be coaxial. Are located in The rotation force of the film transport motor 30 is controlled by the gear 32A as shown in FIG.
The gear trains 32C, 32D, 32E,..., 32L,
The power is transmitted to the spool drive shaft 26 via 2M.

The positive electrode of the main battery 34 disposed below the film transport motor 30 directly contacts and is electrically connected to the printed board 70 on which an electric circuit is formed. The main capacitor 36 is also directly soldered to the printed board 70 to simplify the wiring. An auxiliary battery 40 for supplying charging energy to the main battery 34 is disposed behind the main battery 34 and the film transport motor 30 (see FIG. 10). The auxiliary battery 40 is disposed vertically in parallel with the arrangement direction of the main battery 34 and the film transport motor 30, and the negative electrode of the auxiliary battery 40 is connected to the common contact piece member 72 together with the negative electrode of the main battery 34. Be abutted.

As described above, the film transport motor 30
And the main battery 34 are combined and arranged on the same axis, and the auxiliary battery 40 is arranged in parallel adjacent to them, so that each of the above members can be effectively stored in a limited space. In addition, there is an advantage that a common contact member can be used. In addition, since the positive electrode of the main battery 34 is directly in contact with the printed board 70, the contact piece can be omitted, and wiring can be facilitated. In addition,
When the replacement of the main battery 34 is not performed, the positive electrode of the main battery 34 may be directly soldered to the printed board 70.

In the description of the first to fourth embodiments, the case where the shape of the main battery 34 is the same as that of the current CR2 battery has been described as an example. However, the shape of the main battery is not particularly limited. Instead, various forms are conceivable. The number of main batteries is not limited to one. For example, a plurality of small-capacity main batteries can be provided. In such a case, the shape of each main battery can be reduced, and Space can be used more effectively.

[0051]

As described above, according to the camera of the present invention, at least one of the auxiliary battery, the film transport motor, and the main capacitor is arranged on the same axis in combination with the main battery. Thus, there is an advantage that the space can be saved and the camera can be downsized.

Further, at least one of the auxiliary battery, the film transport motor, and the main capacitor is
By arranging the main batteries in such a manner that their longitudinal axes are parallel to each other, a limited space can be effectively used and the camera can be downsized. Furthermore, at least one of the auxiliary battery, the film transport motor, and the main capacitor is adjacent to the main battery, and the axes indicating the respective longitudinal directions are arranged in directions orthogonal to each other. Can be efficiently arranged and can be stored compactly inside the camera.

In this way, by combining at least one of the auxiliary battery, the film transport motor, and the main capacitor with the main battery and efficiently arranging the same, the contact piece can be shared. There is an advantage that the number of parts of the contact piece member can be reduced. Thereby, cost reduction can be achieved. In particular, by directly contacting at least one of the positive electrode and the negative electrode of the main battery with the printed board, the contact piece member can be omitted, and wiring becomes easy.

Further, since the main battery storage chamber for storing the main battery is provided at the back of the auxiliary battery storage chamber for storing the auxiliary battery, the battery cover can be shared, and the auxiliary battery which is frequently replaced compared with the main battery is provided. There is an advantage that the battery can be easily attached and detached.

[Brief description of the drawings]

FIG. 1 is a front internal perspective view of a camera showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the inside of the upper surface of the camera according to the first embodiment of the present invention.

FIG. 3 is a side internal perspective view of the camera showing the first embodiment of the present invention.

FIG. 4 is a block diagram including a charging circuit for charging a main battery with an auxiliary battery.

FIG. 5 is a circuit diagram illustrating an example of a booster circuit.

FIG. 6 is a side internal perspective view of a camera showing a second embodiment of the present invention.

FIG. 7 is a side internal perspective view of a camera showing a third embodiment of the present invention.

FIG. 8 is a front internal perspective view of a camera showing a fourth embodiment of the present invention.

FIG. 9 is a perspective view showing the inside of the upper surface of a camera according to a fourth embodiment of the present invention.

FIG. 10 is a side internal perspective view of a camera showing a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Camera 14 ... Cartridge chamber 16 ... Film take-up chamber 18 ... Strobe device 28 ... Take-up spool 30 ... Film transport motor 34 ... Main battery 36 ... Main capacitor 40 ... Auxiliary battery 41, 47, 48, 66, 72 ... Contact piece 42 ... Battery lid 50 ... Charging circuit 52 ... Charge control circuit 54 ... Boost circuit 70 ... Printed board

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Akio Omiya 1-324 Uetake-cho, Omiya-shi, Saitama Fuji Photo Optical Machine Co., Ltd.

Claims (6)

[Claims] A main battery capable of repeatedly releasing and charging when the self-discharge rate of the primary battery is substantially equal to and having a remaining amount equal to or more than a predetermined capacity; an auxiliary battery for supplying charging energy to the main battery; Charging means for supplying power to the main battery through the boosting means to charge the main battery; and boosting the output voltage of the auxiliary battery, and transporting a film supplied with power from the main battery. A film transport motor, and a main capacitor for accumulating electric charge for strobe light emission, wherein at least one of the auxiliary battery, the film transport motor, and the main capacitor and the main battery have respective longitudinal sides. A camera, wherein axes indicating directions are arranged on the same axis. 2. A main battery that is substantially equal to the self-discharge rate of the primary battery and can be repeatedly discharged and charged when the remaining amount is equal to or more than a predetermined capacity; an auxiliary battery that supplies charging energy to the main battery; Charging means for supplying power to the main battery through the boosting means to charge the main battery; and boosting the output voltage of the auxiliary battery, and transporting a film supplied with power from the main battery. A film transport motor, and a main capacitor for accumulating electric charge for strobe light emission, wherein at least one of the auxiliary battery, the film transport motor, and the main capacitor is adjacent to the main battery, and A camera, wherein axes indicating a longitudinal direction are arranged in parallel. 3. A main battery that is substantially equal to the self-discharge rate of the primary battery and can be repeatedly discharged and charged when the remaining amount is equal to or greater than a predetermined capacity; an auxiliary battery that supplies charging energy to the main battery; Charging means for supplying power to the main battery through the boosting means to charge the main battery; and boosting the output voltage of the auxiliary battery, and transporting a film supplied with power from the main battery. A film transport motor, and a main capacitor for accumulating electric charge for strobe light emission, wherein at least one of the auxiliary battery, the film transport motor, and the main capacitor is adjacent to the main battery, and A camera characterized in that axes indicating longitudinal directions are arranged in directions orthogonal to each other. 4. The battery according to claim 1, wherein at least one of the auxiliary battery, a film transport motor, and a main capacitor is electrically connected to the main battery through one contact piece member. Item 6. The camera according to item 1, 2 or 3. 5. The battery according to claim 1, wherein at least one of the positive electrode and the negative electrode of the main battery is directly in contact with and electrically connected to a printed circuit board on which an electric circuit is formed. Or the camera according to 3. 6. It has a battery cover which is opened and closed at the time of battery replacement,
An auxiliary battery storage section in which the auxiliary battery is removably stored is provided inside the battery cover, and a main battery storage section in which the main battery is removably stored in the back of the auxiliary battery storage section. 3. The camera according to claim 2, wherein the auxiliary battery and the main battery are provided adjacent to each other, and axes indicating their respective longitudinal directions are arranged in parallel.