JPH07306441A - Camera battery pack built-in structure - Google Patents

Abstract

(57) [Summary] [Purpose] The remaining battery capacity can be easily displayed when the secondary battery pack is installed in the camera body, and a single battery check can be performed as necessary. [Structure] Battery pack 1 that is detachably loaded into the camera
As a secondary battery that can be used repeatedly, means for calculating the charge / discharge amount for this battery, and means 12 for displaying the remaining capacity of the secondary battery obtained by this means. The battery remaining capacity display means in this secondary battery pack is made visible from the outside by the notch 20 provided on the back side of the camera body 2 when the battery is loaded into the camera. Further, the secondary battery pack is provided with means for operating the display means in accordance with the connecting operation to the camera or the charger.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a still camera,
The present invention relates to a built-in structure of a battery pack loaded to drive various electric and electronic parts arranged in a camera body.

[0002]

2. Description of the Related Art In recent years, still cameras, like various devices and apparatuses in other fields, have a remarkable tendency toward computerization. Therefore, various electric and electronic parts are incorporated in the camera. It is becoming available. In order to cope with such computerization, a battery power source incorporated in the camera body is required to have a large capacity and cost reduction, and also as an incorporated structure in the camera body, it is easy to use and good in appearance. Is required to be considered.

In general, as a battery used in this type of still camera, an AA type battery, which is relatively easily available, is often used, and a battery chamber formed in a part of the camera body. It was either loaded directly into the, or was loaded using a battery pack incorporating the battery.

In a camera using such a battery, a battery check circuit having a simple circuit configuration is provided in the camera body to detect the consumption of the AA type battery, for example, a shutter button of the camera or a dedicated one. The battery check circuit is activated by depressing the check button of, and the result can be confirmed on the display section inside the viewfinder or outside the main body. Here, in the battery check for detecting the degree of consumption of the AA type battery as described above, it is only necessary to detect the open circuit voltage in view of the discharge characteristics of the battery, so that the camera body has a simple circuit. .

[0005]

In the still camera as described above, a secondary battery such as a nicad battery that can be repeatedly used by charging is used instead of the primary battery that cannot be repeatedly used as an AA battery as a battery power source. It is desired to use a battery pack not only because it is easy to use, but also because the running cost is low, the low temperature characteristics are good, and it is particularly preferred by professional photographers. Then, it is conceivable to adopt a configuration of a secondary battery pack 1 including a nickel-cadmium battery or the like, a camera main body 2 into which the secondary battery pack 1 is mounted, and a charger 3 for the secondary battery pack 1 as shown in FIGS. 10 and 11. Yes (not known).

In these figures, 4 is a photographic lens mounted on the front surface of the camera body 2, and 5 is a finder for confirming a subject image. By looking at the finder 5, a shutter button (not shown) is pressed. The film is exposed. Reference numeral 6 denotes a battery pack housing formed at the bottom of the camera body 2, and the secondary battery pack 1 is loaded in the housing 6.

The secondary battery pack 1 has a structure in which a plurality of nickel-cadmium batteries are housed inside and is covered with a resin case, and has a shape at the outer end that can be easily attached to and detached from the camera body 2. The rectangular head 1a is formed, and the electrode portions 7 and 8 are formed at two positions at the end of the insertion portion 1b.
Further, a charging jack 9 is provided on the side of the insertion portion 1b.

Then, such a secondary battery pack 1 is
As shown in FIGS. 10 and 11, the storage section 6 on the camera side
When loaded and assembled from the lateral direction, the electrode portions 7 and 8 come into contact with electrodes (not shown) provided in the camera body 2 so as to face each other, and the secondary electrodes are operated depending on the operation of each portion on the camera side. Power is supplied from the battery inside the battery pack 1.

When the secondary battery (NiCd battery) in the secondary battery pack 1 is exhausted, the square head 1a is pulled out from the storage portion 6 in the lateral direction, and the charging jack 9 on the side portion thereof. The charging is performed by inserting the charging plug 10 pulled out from the charger 3 into the. Reference numeral 11 is an AC plug that is pulled out from the charger 3 and used by being inserted into a household outlet or the like.

In the secondary battery pack 1 as described above, a circuit means (not shown) for calculating the remaining capacity of the nickel-cadmium battery inside and a display section 12 for displaying the remaining capacity of the battery obtained by this means. And are provided. That is, in this type of nickel-cadmium battery, the current product for charging by the charger 3 and the current product for discharging, that is, operating the internal mechanism in the camera body 2 are always integrated and calculated. The remaining capacity can be displayed.

Here, the remaining capacity display section 12 is composed of a plurality of so-called bar graph-shaped segments by liquid crystal display, and the length of the bar displayed based on the result obtained by the remaining capacity detection circuit means. Indicates the remaining capacity. The display unit 12 may be configured by a light emitting diode array or the like as a display unit, and can be displayed by emitting light by performing a push button operation or the like. The simplest way to provide such a battery remaining capacity display unit 12 in the secondary battery pack 1 is as follows.
As shown in FIGS. 10 and 11, the end surface of the square head 1a of the pack 1 and the like are conceivable.

However, in such a structure, since the state-of-charge display section 12 is on the side of the camera body 2, it is difficult to instantly visually recognize it during actual use such as during photographing.

Further, in the above-mentioned secondary battery pack 1, when the remaining capacity is displayed by a check button or the like provided on the pack, the push button operation can be performed without any problem when the pack is a single unit. When the camera is loaded and used, the operability may be impaired depending on the position where the button is attached to the pack 1. In other words, even if the user suddenly tries to check the battery during shooting, or if the user tries to check the battery during charging by the charger 3, it is inconvenient because the button must be pressed one by one.

Further, in constructing a camera in which the above-described secondary battery pack is loaded, primary batteries (such as AA type batteries) that cannot be repeatedly used are directly or indirectly packaged and used. It is also necessary to consider that, and it is considered to dispose the battery check circuit for the primary battery as described above in the camera body 2. That is, the selection of whether to use a battery pack for a primary battery or a secondary battery as such a battery pack is
This is done in consideration of the balance between the frequency of battery usage and the cost of the camera.

In order to achieve a circuit and a display unit for checking the battery of such a primary battery pack with the minimum necessary configuration, it is the best choice to incorporate a simple one into the camera body 2 side. . However, in such a configuration, when the secondary battery pack 1 including the remaining capacity display circuit means is used, the remaining capacity display circuit means and the battery check circuit means for the primary battery provided on the camera side coexist. Will be done. Therefore, when the secondary battery pack 1 is used, forgetting this and activating the means on the camera side, that is, the battery check circuit means for the AA type battery, and making an incorrect determination of the battery capacity, etc. May lead to problems.

The present invention has been made in view of the above circumstances, and uses, for example, a rechargeable secondary battery pack for driving various electric and electronic parts arranged in the camera body. When the battery is charged, the remaining capacity of the battery can be displayed easily and properly when it is installed in the camera body or when it is connected to the battery charger. It is an object of the present invention to provide a battery pack built-in structure for a camera, which can easily check the battery even when an unusable primary battery pack is used.

[0017]

In order to meet such a demand, a battery pack built-in structure of a camera according to the present invention,
As a battery pack that is removably loaded in the camera, a rechargeable secondary battery, means for calculating the charge / discharge amount for this battery, and means for displaying the remaining capacity of the secondary battery obtained by this means In addition to the above configuration, the battery remaining capacity display means in the secondary battery pack is configured to be visible from the outside by the notch or the transparent window provided on the back side of the camera body when the battery is loaded into the camera.

Further, according to the present invention, the secondary battery pack is provided with means for operating the remaining capacity display means of the battery according to the connecting operation of the secondary battery pack to the camera or the charger.

Further, according to the present invention, a part of the secondary battery pack is provided with a means for controlling the operation of the remaining capacity display means of the battery by a manual operation, and the operation control means of the display means is used as a secondary battery. It is equipped with a means to operate in conjunction with the operation of connecting the battery pack to the camera and charger.

Further, according to the present invention, a part of the secondary battery pack is provided with a means for controlling the operation of the remaining capacity display means of the battery by a manual operation, and the operation control means of the display means is used as a secondary battery. The battery pack is provided with a means for operating in conjunction with the connecting operation to the camera, and the battery pack is provided with means for controlling the operation of the display means according to the connecting operation to the charger.

Further, according to the present invention, the secondary battery pack including the above-described reusable secondary battery and the primary battery pack having a non-reusable primary battery can be selectively loaded and used. In doing so, a means for detecting that the secondary battery pack is mounted on the camera body side having means for checking and displaying the remaining capacity of the primary battery corresponding to the primary battery pack, and the output of this detecting means By this means, means for controlling the primary battery remaining capacity display means is provided.

[0022]

According to the present invention, the battery residual capacity indication of the secondary battery pack can be visually recognized from the back side by the notch or the transparent window provided in the camera body.

Further, according to the present invention, when the secondary battery pack is left alone, the capacity is not displayed and the battery can be checked as needed.
When connected to a camera or charger, the capacity can be displayed constantly or selectively.

Furthermore, according to the present invention, when the primary battery pack, which is a basic usage pattern, is loaded, the battery check is performed by the battery check circuit attached to the camera body side, while the remaining capacity is displayed. When a secondary battery pack capable of performing the above is used, the operation of the circuit on the camera side is prohibited, and the remaining capacity can be displayed on the circuit on the pack side.

[0025]

1 to 3 show an embodiment of a battery pack assembling structure of a camera according to the present invention, in which the same or corresponding parts as those in FIGS. 10 and 11 described above are designated by the same reference numerals. The description is omitted.

According to the present invention, the housing portion 6 of the camera body 2
As a battery pack 1 that is removably loaded in the battery, as is apparent from the circuit configuration shown in FIG. 3, a rechargeable secondary battery (nicad battery) 30 and a charge / discharge amount for the battery 30 Of the secondary battery pack 1 and a means for calculating the remaining capacity of the secondary battery 30 obtained by this means (display circuit 32 including the display section 12). As shown in FIGS. 1 and 2, the display section 12 serving as the battery remaining capacity display means can be easily viewed from the rear side of the camera body 2 when the camera is loaded, that is, even when the camera is held. It is characterized in that it is provided on the back side of the visible camera body 2.

Here, in this embodiment, a substantially rectangular notch 20 is provided on the rear side of the camera facing the housing portion 6 of the camera body 2, and the notch 20 is engaged with the notch 20 of the camera body 2. An overhang portion 21 exposed on the back side is provided on a side portion on the back side of the pack 1, and a case where the battery remaining capacity display portion 12 such as a liquid crystal display is provided on the surface of the overhang portion 21 is shown. With such a configuration, the battery remaining capacity display of the secondary battery pack 1 is
This can be performed in a state in which it is easily visible by the display unit 12 facing the back side of the camera body 2.

In this embodiment, the notch 20 is formed on the back side of the camera body 2 so that the display section 12 on the pack 1 side displays the remaining battery capacity. However, as a modified example thereof, as shown in FIGS. 4 and 5, for example, a transparent window 22 in which a transparent resin plate material is integrally incorporated is provided on the back side of the camera body 2, and the side portion on the pack 1 side is provided. The remaining capacity display portion 12 formed at the corresponding position may be configured to be visible from the outside. According to such a configuration, the display state of the display unit 20 can be visually recognized from the rear of the camera through the transparent window 22, and the display unit 12 such as a liquid crystal display can be protected from the impact force applied from the outside by the presence of the transparent window 22. It has the advantage that it protects against damage and is strong against external shocks.

Here, the secondary battery pack 1 as described above.
FIG. 3 shows an electric circuit of the camera body 2 into which the battery is loaded and the charger 3 as well. To briefly explain this, the circuit on the left side of the drawing is the internal circuit of the charger 3, and in this circuit, the AC power from the AC plug 11 is the rectifier circuit 33.
The charging current, which is connected to the charging terminal and is converted into direct current, is inserted into the charging jack 9 of the charging plug 10 (see FIG. 10), so that the charging terminal 34 (CHG) and the ground terminal 35 are connected.
(GND) and is output to the circuit on the secondary battery pack 1 side. The rectifier circuit 33 described above may be one that simply outputs an appropriate current to the secondary battery 30, or a known charging method that automatically stops the charging current by monitoring the terminal voltage. It may include a circuit.

The circuit shown in the center of FIG. 3 is an internal circuit of the secondary battery pack 1 which is a main part of the present invention. The current from the circuit on the charger 3 side charges the secondary battery (nicad battery) 30 from the terminals 34 and 35 described above through the diode 36 and the resistor 37. Here, the diode 36 is for preventing the secondary battery 30 from being damaged when a voltage having a polarity different from that of the charger 3 is erroneously applied to the terminals 34 and 35. In addition, this secondary battery 30
Current from the discharge terminal 38 (DIS) for discharging
And the ground terminal 39 (GND) to the internal circuit on the camera body 2 side. Here, the discharge terminal 38,
Reference numeral 39 corresponds to the electrodes 7 and 8 provided on the insertion end side of the pack 1 described above.

The resistor 37 is intended to convert the current between the terminals 34 and 35 into a voltage, which is indicated by an arrow I during charging.
c. At the time of discharging, the current in the direction of the arrow Id is converted into a voltage and output to the current detection circuit 40. The current detection circuit 40 grasps the direction identification and the current amount of the current generated as described above, and outputs the result to the arithmetic circuit 31.

On the other hand, the timing output of the timing circuit 41 is also applied to the arithmetic circuit 31, and the current capacity of the secondary battery 30 at that time is obtained by calculation with the above-mentioned charge / discharge current amount. That is, the charging capacity for the secondary battery 30 is determined from the product of the charging current and the charging time during charging, and the discharging capacity from the secondary battery 30 is determined from the product of the discharging current and the discharging time during discharging, and the difference between the former and the latter is obtained. Therefore, the remaining capacity of the secondary battery 30 is obtained. Then, by displaying the obtained current capacity on the display unit 12 via the display circuit 32, the photographer can recognize the remaining capacity of the secondary battery 30 in the pack 1.

The circuit on the right side of FIG. 3 is the internal circuit of the camera body 2 described above, and the power supply from the secondary battery 30 via the discharging terminals 38 and 39 is first performed by the DC-DC converter 42. (D / D). Also, DC
The function of the DC converter 42 is activated by the operation of a power switch (not shown), and a constant voltage is supplied to the exposure control circuit 43 and the like. The exposure control circuit 34 and the like include a control system for measuring the brightness of the subject, operating the shutter and diaphragm based on the result, and further winding the film.

Although not shown in detail in the circuit diagram of FIG. 3, the arithmetic circuit 31 and the display circuit 3 described above are omitted.
A power supply system is connected to 0 so as to be constantly energized.

FIGS. 6 and 7 show a second embodiment according to the present invention. In this embodiment, as the secondary battery pack 1, a battery remaining capacity display portion 12 or the like is manually operated on a part thereof. In the case where a battery check button 50 that can be operated and controlled by loading the camera body 2 into the storage section 6 is used and the check button 50 is not pressed, for example, when it is left alone. Is
It shows a case where the display unit 12 is configured not to display the remaining capacity. And by doing this,
Battery consumption can be suppressed by the current consumption of the display circuit 32 and the like when the battery check is unnecessary, and it is particularly suitable when an LED is used as the display unit 12.

That is, in the present embodiment, when it is desired to confirm the battery remaining capacity, the check button 50 provided on the outside of the pack 1 is pressed to perform the display on the display unit 12 only during that time. ing. Then, when using the secondary battery pack 1 having such a check button 50, according to the present invention, a control means such as the battery check button 50 for controlling the remaining capacity display of the battery is provided as a secondary battery. A feature is that a means for operating in conjunction with the connection operation of the pack 1 to the camera body 2 and the charger 3 is additionally provided.

More specifically, in this embodiment, a check button 50 is provided on the side of the insertion portion 1b of the pack 1 so as to project the pack 1 from the storage portion 6 of the camera body 2.
When it is loaded into the camera, it is automatically pressed by its inner wall portion, so that the remaining capacity is always displayed when it is loaded into the camera. Further, when the charger 3 is connected to the secondary battery pack 1 by inserting the charging plug 10 into the charging jack 9, the state is detected by the circuit configuration in the pack 1 and the display circuit 32 or the like is activated. The remaining capacity is displayed.

FIG. 7 shows an internal circuit of the secondary battery pack 1 for performing such a function. This will be described. In this circuit, the arithmetic circuit 31 is always energized because the operation for executing the calculation of the charging / discharging current amount is always required. On the side, a contact 51 that is turned on / off in association with the battery check button 50 is provided.
0 is turned on by a manual operation or a loading operation into the camera (the housing portion 6 of the camera body 2), the circuit 3
2 is connected to the ground side so that it can be energized and the capacity state by the arithmetic circuit 31 is displayed.

The input of the charging terminal 34 (CHG) is
It is also connected to a transistor 52, and this transistor 52 can connect the display circuit 32 to the ground side in parallel with the contact 51. According to such a configuration, by connecting the charger 3 to the charging jack 9 of the secondary battery pack 1, the charging current charges the battery 20, while the charger 3 is connected to the pack 1. It is possible to display the battery capacity by turning on the transistor 52, which is a means for operating in conjunction with the operation, and grounding the display circuit 32 to start the operation.

Therefore, according to such a configuration, when the secondary battery pack 1 is left alone, the capacity is not displayed, and the battery check button 50 is operated as necessary to perform the battery check. The capacity can be displayed at all times when the camera and the charger 3 are used.

In this embodiment, in order to display the information on the display unit 12, the check button 50 is inserted into the camera body 2 of the camera body 2 by loading the secondary battery pack 1 on the camera side by the inner wall of the storage unit 6. Although it is pressed directly to maintain the state, and when it is connected to the charger 3, a similar operation is performed by an electric signal, but such mechanical and electric operation control is They may be opposite to each other, or they may be configured by similar means. In short, when the secondary battery pack 1 is left unattended, the capacity is not displayed, and the display can be performed only when the battery is connected to the camera body 2 and the charger 3.

FIGS. 8 and 9 show a third embodiment of the present invention. In this embodiment, the secondary battery pack 1 including the above-mentioned reusable secondary battery 30 and the primary battery which cannot be repeatedly used. A configuration for constructing a camera body 2 that can be used by selectively loading a primary battery pack 60 in which a battery (for example, an AA battery or the like) 61 is incorporated is shown.

That is, when constructing such a dual-purpose camera, as shown in FIG. 8, the primary battery pack 60 is used.
Assuming that the battery check button 62
And a display lamp 63 such as an LED, and a battery check circuit for a primary battery is built in the camera body 2. When the check button 62 is pressed, the built-in circuit is activated, and when the battery capacity is sufficient, the indicator lamp 63 lights up to notify the photographer. Further, when the battery capacity is insufficient, the indicator light 63 blinks or the like, so as to notify that effect.

In the battery check circuit provided in the camera body 2 as described above, the determination condition is set only for the primary battery such as the AA type battery, and the correct determination cannot be performed for the secondary battery. This is because the use of the secondary battery is limited as compared to the AA battery 61.

Here, the primary battery pack 60 in which the primary battery 61 is incorporated and loaded into the housing portion 6 of the camera body 2 is
As shown in FIG. 8, the case body has a battery chamber 64 into which the battery 61 can be detachably incorporated. Also,
At the insertion end of the case body that constitutes the pack 60, the discharge terminals 7 and 8 similar to those of the secondary battery pack 1 described above are provided, and in addition to this, the battery pack identification electrode 65 (DET) is provided. It is provided.

In such a structure, the battery check when using either the camera body 2 or each of the battery packs 1 and 60 is properly used as follows.
That is, when the primary battery pack 60 is used, the battery check button 62 provided on the camera body 2
By pressing, the built-in circuit for the primary battery
When the battery remaining capacity is sufficient, the indicator light 63 is turned on, and when the battery is exhausted, it blinks to notify the state. On the other hand, when the secondary battery pack 1 is loaded, the remaining capacity can be confirmed by the lighting condition on the display unit 12 outside the pack 1.

However, the problem in such a case is that if the camera is provided with a dedicated checking circuit means for the primary battery and the secondary battery pack 1 is provided with a dedicated check circuit means for the primary battery, the photographer does not know which battery is used. Check button 62 on the camera when you forget to load packs 1 and 60
There is a possibility that a problem may occur in which the battery capacity is erroneously grasped by pressing only the button and seeing only the display state of the indicator lamp 63 accompanying this.

Therefore, according to the present invention, as described above, the battery check circuit 66 (B) that corresponds to the primary battery pack 60 and checks and displays the remaining capacity of the primary battery 61.
C) and means for detecting the loading of the secondary battery pack 1 on the camera body 2 side having means such as the indicator lamp 63 (in this embodiment, means for confirming the presence or absence of the battery pack identification electrode 65), and this detecting means. The detection output of the primary battery indicates the remaining capacity of the primary battery (the battery check circuit 66 and the indicator lamp 6).
It is characterized in that a means for controlling 3) is provided.

Here, 67 in FIG. 9 is the check button 62.
This contact 67 is a contact which is turned on and off by the contact 67, and when the pack is on the primary battery side and the identification electrode 65 is present, the battery check circuit 66 connected to the indicator 63 side is selectively grounded. The circuit on the camera body 2 side is activated.

In this structure, the identification electrode 6
When 5 is not present, the check circuit 66 or the like does not operate regardless of the pressing operation of the check button 62, and the indicator lamp 63 does not light up or blink. Therefore, in such a configuration, when the primary battery pack 60, which is the basic usage pattern, is loaded, the battery check circuit 66 attached to the camera body 2 side performs a battery check while displaying the remaining capacity. When the secondary battery pack 1 capable of performing the above is used, the operation of the circuit 66 on the camera side is prohibited, and the remaining capacity can be displayed by the circuit on the pack 1 side.

The present invention is not limited to the structure of the above-described embodiment, but the camera body 2, the battery packs 1, 60, the charger 3 are included.
It is free to appropriately change and change the shape, structure, etc. of each part including the above. For example, in the embodiment described above,
Although a Nicad battery is exemplified as the secondary battery, the present invention is not limited to this, and even a reusable battery such as a lead storage battery,
Similar effects can be obtained.

The camera body 2 of the battery packs 1 and 60
The loading location and loading direction are not limited to the structure of loading the lower portion of the camera body 2 from the lateral direction as in the above-described embodiment.

[0053]

As described above, according to the battery pack built-in structure of the camera according to the present invention, the secondary battery which can be repeatedly used as a battery pack which is detachably mounted in the camera, It comprises a means for calculating the charge / discharge amount and a means for displaying the remaining capacity of the secondary battery obtained by this means, and means for displaying the remaining capacity of the battery in the secondary battery pack is provided in the camera body when it is loaded into the camera. Since it is configured to be visible from the back side by the cutout portion and the transparent window, the following excellent effects can be obtained despite the simple configuration.

That is, according to the present invention, the battery remaining capacity of the secondary battery pack can be displayed in a state where it can be easily seen from the rear side of the camera body, and the posture can be changed without changing the photographing posture with the camera. Since the remaining capacity can be confirmed quickly, there is no problem of missing a shooting opportunity.

Further, according to the present invention, the secondary battery pack is provided with means for controlling the operation of the battery remaining capacity display means by manual operation, and the operation control means of this display means is used as the camera of the secondary battery pack. Or a means for activating the battery according to the connecting operation to the charger, or a means for indicating the remaining capacity of this battery in the secondary battery pack depending on the connecting operation to the camera or the charger of the secondary battery pack. Since a means is provided, it is possible to prevent the capacity display from being displayed when the secondary battery pack is left alone, so it is possible to prevent unnecessary battery consumption, and even in this case it is necessary. The battery can be checked accordingly, and when the battery is charged by connecting to a camera or charger that requires quick capacity check, the capacity can always be displayed properly and reliably.

Further, according to the present invention, a part of the secondary battery pack is provided with a means for controlling the operation of the remaining capacity display means of the battery by a manual operation, and the operation control means of the display means is provided as a secondary battery. By providing a means for operating the battery pack in conjunction with the camera's connection operation, or providing this battery pack with a means for controlling the operation of the display means in accordance with the connection operation to the charger, Similarly to the above, the remaining capacity of the secondary battery pack can be appropriately and reliably displayed as needed.

Further, according to the present invention, the secondary battery pack including the above-described reusable secondary battery and the primary battery pack having the non-reusable primary battery can be selectively loaded and used. In doing so, a means for detecting that the secondary battery pack is loaded on the main body of the camera having means for checking and displaying the remaining capacity of the primary battery corresponding to the primary battery pack, and the primary output based on the output of this detecting means. Since the means for controlling the battery remaining capacity display means is provided, when the primary battery pack, which is the basic usage pattern, is loaded, the battery check is performed by the battery check circuit attached to the camera body side. On the other hand, when using a secondary battery pack that can display the remaining capacity,
Since the operation of the circuit on the camera side is prohibited and the remaining capacity can be displayed on the circuit on the pack side, it is possible to prevent malfunction due to misunderstanding by the photographer.

[Brief description of drawings]

FIG. 1 is a schematic exploded perspective view showing an embodiment of a battery pack assembling structure of a camera according to the present invention.

FIG. 2 is a schematic perspective view showing an embodiment of a battery pack assembling structure of a camera according to the present invention in a state in which a secondary battery pack is installed.

FIG. 3 is an electric circuit diagram of a camera using the secondary battery pack according to the present invention.

FIG. 4 is a schematic exploded perspective view showing a modified example of the present invention.

FIG. 5 is a schematic perspective view showing a modified example of the present invention in FIG. 4 in an assembled state.

FIG. 6 is a schematic exploded perspective view showing a second embodiment of the battery pack built-in structure of the camera according to the present invention.

FIG. 7 is a circuit diagram for explaining a circuit configuration in the secondary battery pack in the embodiment of FIG.

FIG. 8 is a schematic exploded perspective view showing a third embodiment of the battery pack assembling structure of the camera according to the present invention.

FIG. 9 is a circuit diagram for explaining a battery check circuit on the primary battery pack and the camera body side.

FIG. 10 is a schematic exploded perspective view for explaining a schematic configuration of a camera using a secondary battery pack.

FIG. 11 is a schematic perspective view of a battery pack assembled state for explaining a schematic configuration of a camera using a secondary battery pack.

[Explanation of symbols]

1 ... Secondary battery pack, 2 ... Camera body, 3 ... Charger, 6
... Battery pack storage section, 7,8 ... Terminal, 9 ... Charging jack, 10 ... Charging plug, 12 ... Battery remaining capacity display section,
20 ... Notch, 22 ... Transparent window, 30 ... Secondary battery (nicad battery), 31 ... Arithmetic circuit, 32 ... Display circuit, 50 ... Battery check button, 51 ... Contact, 52 ... Transistor, 6
0 ... Primary battery pack, 61 ... Primary battery, 62 ... Battery check button, 63 ... Indicator light, 65 ... Battery pack identification electrode, 66 ... Battery check circuit, 67 ... Contact.

Claims (10)

[Claims] 1. A camera in which a battery pack is removably loaded, wherein the battery pack is a rechargeable secondary battery, a means for calculating the charge / discharge amount of the battery, and the means obtained by the means. The battery remaining capacity indication in the battery pack when the battery pack is mounted in the camera is provided with a notch in a portion of the camera where the battery pack is loaded. A structure for assembling a battery pack of a camera, wherein the means is configured to be visible through the cutout portion. 2. A camera in which a battery pack is removably loaded, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. The battery remaining capacity is displayed in the battery pack when the battery pack is mounted in the camera, and a transparent window is provided in a portion of the camera where the battery pack is mounted. A battery pack built-in structure for a camera, wherein the means is configured to be visible through the transparent window. 3. A camera in which a battery pack is removably loaded, wherein the battery pack is a rechargeable secondary battery, a means for calculating the charge / discharge amount of the battery, and the means obtained by the means. A battery pack built into a camera, characterized in that the battery pack comprises means for displaying the remaining capacity of the battery, and the battery pack is provided with means for operating the display means according to the connection operation of the battery pack to the camera. Construction. 4. A camera in which a battery pack is detachably mounted, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. A battery pack for a camera, characterized in that the battery pack comprises means for displaying the remaining capacity of the battery, and the battery pack is provided with means for operating the display means in accordance with the operation of connecting the battery pack to the charger. Built-in structure. 5. A camera in which a battery pack is removably loaded, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. The battery pack comprises means for displaying the remaining capacity of the battery, and the battery pack is provided with means for operating the display means in accordance with the operation of connecting the camera of the battery pack to the battery charger. Battery pack built-in structure. 6. A camera in which a battery pack is detachably mounted, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. The battery pack comprises means for displaying the remaining capacity of the battery, and a means for controlling the operation of the display means by a manual operation is provided in a part of the battery pack, and the operation control means for the display means is connected to the camera of the battery pack. A battery pack built-in structure for a camera, characterized in that a means for operating in conjunction with the connection operation of is attached. 7. A camera in which a battery pack is removably mounted, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. The battery pack comprises means for displaying the remaining capacity of the battery, and a means for controlling the operation of the display means by a manual operation is provided in a part of the battery pack, and the operation control means for the display means is connected to the camera of the battery pack. A camera provided with means for operating in conjunction with the connection operation of the battery pack, and means for controlling the operation of the display means according to the connection operation of the battery pack to the charger. Built-in battery pack structure. 8. A camera in which a battery pack is detachably mounted, wherein the battery pack is a rechargeable secondary battery, a means for calculating the charge / discharge amount of the battery, and the means obtained by the means. The battery pack comprises means for displaying the remaining capacity of the battery, and a part of the battery pack is provided with means for controlling the operation of the display means by manual operation, and the operation control means for the display means is the camera of the battery pack, A structure for assembling a battery pack of a camera, characterized in that a means for operating in conjunction with a connecting operation to a charger is additionally provided. 9. A camera in which a battery pack is removably mounted, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. The battery pack comprises means for displaying the remaining capacity of the battery, and means for controlling the operation of the display means by manual operation is provided in a part of the battery pack, and the battery pack is connected to the charger of the battery pack. A battery pack built-in structure for a camera, characterized in that means for controlling the operation of the display means according to the operation is provided. 10. A camera to which a battery pack is detachably mounted, wherein the battery pack is a rechargeable secondary battery, a means for calculating a charge / discharge amount for the battery, and the means obtained by the means. A secondary battery pack configured by means for displaying the remaining capacity of the battery and a primary battery pack having a primary battery that cannot be repeatedly used are configured to be selectively loaded and used, and on the camera body side, Means for checking and displaying the remaining capacity of the primary battery corresponding to the primary battery pack, and means for detecting that the secondary battery pack is loaded,
And a means for controlling the primary battery state of charge display means according to the output of the detection means.