JPS62187331A - Camera - Google Patents

Abstract

PURPOSE:To reduce the size of a camera and also compact it by using a capacitor whose cross section is flat for an electronic flash device. CONSTITUTION:The capacitor 15 of the electronic flash device is positioned between a film cartridge chamber 6 and a cover 3 right below a light emission part 1 so that the long sides of the cross section shape are set in the front-rear direction of the camera. The capacitor is wound in a flat elliptic column shape. Thus, the capacitor is made flat so that is stored excellently, so the camera is made compact, and the distance between the light emission part and the optical axis of a lens is large, so the adverse influence of an electromagnetic wave generated by the discharging of the capacitor upon elements of an electric circuit 10 is reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a camera incorporating an electronic flash device.

[Conventional technology]

In a conventional camera of this kind, as shown in FIGS. 6 and 7, the capacitor (15) of the electronic flash device
was cylindrical. Incidentally, that capacitor (15
) is the diameter (dragon) x length (fin) of 16 x 30 or 14
．． A size of about 5x50 is required.

For reasons that will become clear from the explanation below, the condenser (15) is located inside the camera, which is surrounded by the body (2) and the cover (3), around the close-up lens (4). At the rear of the shutter block (12), at the bottom of the light-shielding tube (5), there are a film cartridge chamber (6) and a film winding chamber (7).
It was placed between. The upper part of the inside of the camera includes a control circuit board (10) on which electric circuit elements such as a control microcomputer, a control IC1 resistor, a capacitor, and a transistor are mounted, and a viewfinder unit including an autofocus distance measuring section. ) (11) and a light emitting part (1) of an electronic flash device are arranged. (14) is a battery as a power source.

[Problem that the invention seeks to solve]

However, when using the conventional camera, the camera is a rectangular parallelepiped like a lunch box, but the condenser is cylindrical, so it is difficult to fit the condenser inside the camera, and it is difficult to install the condenser. A large dead space is likely to be formed. Therefore, the small size of the camera,
This imposed constraints on compactness.

In addition, as mentioned above, when a capacitor is placed at the bottom of the light-shielding tube, the size and shape of the space at the bottom of the light-shielding tube are relatively close to the size and shape of the capacitor, and the space at the bottom of the light-shielding tube is By making the capacitor a little larger, the capacitor can be installed, so the camera can be made smaller and more compact than when the capacitor is installed elsewhere, such as on the side of the camera as shown by the imaginary line in Figure 7. easy. However, when trying to make a camera thinner, for example, it is necessary to install a capacitor with a smaller diameter and longer length in order to secure the capacity of the capacitor. If you try to make the camera smaller in the width direction, you will need to install a capacitor with a larger diameter and shorter length for the same reason as above. , cameras become thicker.

As detailed above, conventional cameras have reached the limit of compactness and miniaturization.
We are focusing on using large lithium batteries as power sources for quick charging of electronic flash devices, and using LED's and PLCDs.
As devices become more multi-functional, such as various displays, microcomputer control, and automatic flashing of electronic flash devices, they inevitably become larger.

An object of the present invention is to make a camera smaller and more compact.

[Means for solving problems]

A feature of the camera according to the present invention is that the capacitor of the electronic flash device is formed flat in cross section. The effects and effects thereof are as follows.

[For production]

Since the capacitor has a flat cross-sectional shape, it can be installed so that it can be attached to the cover or body of a rectangular parallelepiped camera such as a lunch box, compared to conventional cylindrical capacitors. , fits well and reduces dead space.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 3, there is a camera in which an electronic flash device is incorporated, and the light emitting part (1
) is installed at the upper right corner when viewed from the front so that the distance from the optical axis of the photographic lens is large.

Inside the camera, which is surrounded by the main body (2) and the cover (3), there is a film cartridge chamber (6) and a film winding chamber ( 7) are arranged.

Also, inside the camera, on the upper side, there is a control microcomputer (8). 111C (9), a control circuit board (10) on which electrical circuit elements such as resistors, capacitors, and transistors are mounted, and a finder unit (11).
and are arranged. The finder unit (11
) is composed of a frame (lla), a finder (llb), an autofocus lens (llc), and a cover plate (lid) that prevents harmful light from entering the finder optical path. In addition, in this finder unit (11), the optical path (
Focusing on the fact that L) becomes narrower toward the photographer's eye (E), by arranging the cover plate (lid) closer to the optical path (L), the distance between the cover plate (lid) and the control circuit board (10) is reduced. The control IC (9) is placed in the camera, thereby making the camera more compact in the height direction.

An autofocus mechanism chamber (13) is located in front of the shutter block (12) provided around the photographic lens (4).
) is configured.

A battery (14) as a power source is arranged between the film winding chamber (7) and the left side plate of the cover (3), and a capacitor (15) of the electronic flash device is connected to the film cartridge. between the chamber (6) and the right side plate part of the cover (3), and arranged directly below the light emitting part (1) so that the long side of the cross-sectional shape is located along the front-rear direction of the camera. There is. The capacitor (15) is wound in the shape of a flat elliptical cylinder so that the whole has a flat shape, whereas conventional capacitors are wound in the shape of a cylinder. And the power supply voltage from the battery (14) is 300V.
A booster circuit system that boosts the voltage to a certain degree, and the capacitor (15
) is mounted with a flash circuit board (17) mounted with an electric circuit element group (16) including a trigger circuit system that causes the light-emitting part (1) to emit light by discharging the charges accumulated in the light-shielding tube (5). It is located in

In addition, (18) is a winding mechanism arranged above and below the film winding chamber (7), and (19) is a film feeding mechanism arranged on the light-shielding tube (5) side of the film winding chamber (7). (20) is the sprocket of the light shielding tube (5).
) through the gear train (21) provided at the top of the winding mechanism (
18) is a rewinding fork that is interlocked with , (22) is a film pressure plate, and (23) is a back cover.

Incidentally, the capacitance of the capacitor (15) is 170 μF to 2
00μF, and the size varies depending on the need and the size of the camera, but the maximum length is 70m1+, and the standard is about 48m, and the long side is 17 to 35mm, and the standard is 26mm.
m, the short side is 8 to 10 dragons, and the standard is about 'J+n.

[Another example]

Next, another embodiment of the present invention will be shown.

The capacitor (15) in the present invention also includes a capacitor formed into a flat shape by arranging a plurality of small diameter cylindrical capacitors (15a) in parallel, as shown in FIG.

In the above embodiment, the capacitor (15) was arranged so that its longitudinal direction was in the direction of the film winding axis, but as shown in FIG. In a camera in which the capacitors (15) are arranged one above the other, the capacitor (15) may be arranged so that its longitudinal direction is perpendicular to the film winding axis.

〔Effect of the invention〕

In summary, according to the present invention, the capacitor is formed into a flat shape that fits easily inside the camera, so the dead space created when installing the capacitor is small, and even when a large lithium battery is used or multi-functionality is used, It has now become possible to make cameras smaller and more compact.

In particular, when the capacitor is arranged so that the long side of the cross-sectional shape is located along the front and back direction of the camera,
By setting the length of the long side so that it fits within the front and back width of a compact and compact camera, and setting the length of the capacitor so that it fits within the vertical or horizontal width of the camera, the capacitor can be Although the camera can be made sufficiently flat, the space within the camera can be utilized to the fullest in both front and rear widths, vertical widths, and width directions, and a sufficient capacity can be secured as a capacitor for an electronic flash device.

In addition, when the capacitor is placed adjacent to the light emitting part of an electronic flash device, the light emitting part is placed in order to increase the distance between the light emitting part and the optical axis of the shadow lens, and at the same time the capacitor and the light emitting part are placed adjacent to each other. Therefore, the negative effects on various electric circuit elements due to electromagnetic waves generated due to discharge of the capacitor can be minimized as much as possible.

[Brief explanation of drawings]

1 to 3 show an embodiment of the camera according to the present invention, in which FIG. 1 is a cross-sectional plan view, FIG. 2 is a vertical rear view, FIG. 3 is a vertical cross-sectional side view, and FIG. FIG. 5 is a perspective view and a longitudinal rear view of the main part (capacitor) showing another embodiment. FIG. 6 and FIG. 7 are a longitudinal side view and a longitudinal rear view showing a conventional example. (15)... Capacitor, (1)...
Light emitting part.

Claims (3)

[Claims] (1) A camera incorporating an electronic flash device, in which the capacitor of the electronic flash device is formed flat in cross section. (2) The camera according to claim (1), wherein the capacitor is arranged such that the long side of its cross-sectional shape is located along the front-rear direction of the camera. (3) The camera according to claim (1) or (2), wherein the capacitor is arranged at a location adjacent to a light emitting section of an electronic flash device.