JPH0429227A - Camera - Google Patents

Abstract

PURPOSE:To easily hold a camera and to prevent misphotographing like camera blurring by arranging a film winder at the rear of a photographic lens. CONSTITUTION:This camera is provided with a lens barrel 16 arranged in front of an aperture 5, a film magazine housing chamber adjacent to the side of the aperture 5, a gripping part 30 with which the film magazine housing chamber 6 is covered, and a film winder 39 which is arranged at the rear of the aperture 5 so as to winde the film which passes through the behind of the aperture and is exposed. That is, members apart from the gripping part 30 are arranged at the rear of the lens barrel 16 to not only suppress the moment applied to the gripping part 30 as much as possible but also improve the weight balance in the before and behind directions. Thus, the camera has such form that it can be easily held, and the occurrence of camera blurring or the like for photographing is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to cameras, and more particularly to the arrangement of internal mechanisms of cameras that use film as a recording medium.

:Prior Art] Conventionally, many technical ideas have been obtained regarding how to stabilize a camera when it is held with fingers and how to reduce photographic errors such as camera shake.

For example, in the camera described in Japanese Patent Application Laid-open No. 1-207733, a grip portion extending forward approximately parallel to the lens barrel is provided in order to eliminate the moment generated by the weight of the lens barrel opening extending forward. There is a camera in which the camera is supported in a well-balanced manner by grasping this grip part with the fingers.

[Problems to be Solved by the Invention] However, in the structure of the camera described in JP-A-1-207733, a film magazine storage chamber is provided on the side of the lens barrel opposite to the grip portion. However, if the film winding device is placed here,
A moment is generated centered on an axis parallel to the optical axis, that is, in the direction in which the grip portion extends, which causes camera shake during photographing.

An object of the present invention is to suppress the moment due to the weight of the camera itself as much as possible, and to obtain a camera that is easy to hold.

[Means and effects for solving the problem] In order to solve the above-mentioned drawbacks of conventional cameras, an aperture that defines a shooting light flux and forms a shooting screen is provided in a camera that is used by loading film into the camera body. a lens barrel placed in front of the opening; a film magazine storage chamber adjacent to the side of the opening for storing a film magazine; and a grip section provided to cover the film magazine storage chamber. and a film winding device disposed behind the aperture in order to wind up the exposed film that has passed through the rear of the aperture. It is placed at the rear to minimize the moment applied to the grip and to improve the front-to-rear weight balance.

[Example] Hereinafter, the present invention will be described in detail based on illustrated embodiments.

1 to 7 are diagrams showing a first embodiment of the present invention.

FIG. 1 is a horizontal sectional view of the camera in this embodiment.

The camera 1 is divided into a camera body 2 and a back cover 3 that can be opened and closed with respect to the camera body 2, as shown in FIG.

A rear plate 4 is arranged at the rear of the camera body 2.
An opening 5 defining a film photographing screen is formed approximately in the center of the rear plate 4, and a film magazine storage chamber 6 for storing a film magazine is formed on the side of the opening 5 in the rear plate 4.

A capacitor 7 for a flash light emitting device, which will be described later, is placed in front of the film magazine storage chamber 6, and a printed circuit board 9 supporting electrical components 8 such as ICs is placed between the capacitor 7 and the film magazine storage chamber 6. has been done.

Further, in the front part of the rear plate 4, a vine mechanism 10 is arranged in a known manner, and a drive mechanism 11 for the shutter mechanism 10 is arranged.
and the wall surface 12 of the film magazine storage chamber 6.
A printed circuit board 14 supporting electrical components 13 such as the like is arranged.

A mirror hook 15, which will be described later, is arranged on the entire surface of the shutter mechanism 10, and a lens barrel 16 is arranged in front of the mirror hook 15, and the optical axis 0 of the lens barrel 16 is aligned with the opening. It coincides with the center of 5.

Inside the mirror box 15, a main mirror 17 is arranged as shown in the vertical sectional view of FIG.
8 is arranged substantially horizontally with respect to the main body 2.

This finder screen 18 is adjusted to be in a position optically conjugate with the film surface.

At the top of the mirror box 15 of the camera body 2,
A bulging portion 19 is formed that bulges upward from the back cover 3.

A prism 20 is provided inside this bulging portion 19, a roof mirror 21 is provided behind it, and a mirror 21 is provided behind the prism 20.
A plane mirror 22 is arranged at the rear lower part of the camera, and an eyepiece lens 23 is arranged behind it, and these are connected to a finder optical system 24.
It consists of

The prism 20 has an optical entrance surface facing the finder screen 18 and an exit surface facing the tano mirror 21.

The exit surface of this roof mirror 21 faces a plane mirror 22, and the plane mirror 22 faces an eyepiece 23.

The photographing light beam passes through the lens barrel 16 and passes through the main mirror 17.
The light is reflected upward by the beam and forms an image on the finder screen 18.

This image is prism 20. Dach mirror 21. plane mirror 2
2, the image is converted into an erect image, and is emitted to the rear of the camera 1 through the eyepiece lens 23, so that it can be observed by the photographer.

The main mirror 17 is located at the position shown in FIG. 2 during observation by the photographer, and guides the photographing light beam to the finder optical system as described above, and is moved to a position called the finder screen 18 by a drive mechanism (not shown) at the time of photographing. The photographing light beam jumps up and guides the photographing light flux through the aperture 6 to the film surface.

A shaft 25 is provided in front of the prism 20 and near the outer wall of the camera body 2, and a flashlight emitter 26 is attached to the shaft 25. The camera body 2 is pivotably supported in an open position and an open position in which it stands substantially upright above the camera body 2 as shown in the vertical cross-sectional view of FIG.

When the flashlight emitter 26 is in the open position as shown in FIG.
However, second light emitting means 28 are arranged below, and these first light emitting means 27 and second light emitting means 28 are each supplied with power by the capacitor 7, and
A control circuit (not shown) controls light emission when the flashlight emitter 26 is in the open state.

The outer periphery of the front and side surfaces of the capacitor 7 is the camera body 2.
It forms a front half 31 of a grip section 30 that is covered by an outer wall 29 of the camera and is held by the photographer's fingers.

Further, the drive mechanism 11 and the printed circuit board 14 of the shutter mechanism 10 are arranged between the wall surface 12 of the film magazine storage chamber 6 and the mirror box 15, but this space is used for storing films carried out from the film magazine. This utilizes the space required to straighten the curling to a flat surface before reaching the opening 5.

Further, in front of the drive mechanism 11 and the printed circuit board 14 of the shutter mechanism 10, the front half 31 and the lens barrel 1 are connected to each other.
It is covered by a connecting wall 33 that connects with the outer wall 32 of No. 6 and is set back from the front half 31.

As shown in FIG. 1, the back cover 3 is pivotally supported on the camera body 2 by a shaft 34 provided on the camera body 2 so as to be openable and closable.

A protrusion 35 that protrudes toward the rear of the camera 1 is provided in a portion of the back cover 3 located behind the opening 5 .

Inside the protruding portion 35, there is a battery storage chamber 37 in which a power source battery 36 is stored, a film winding chamber 38 for winding up a film that has been photographed, and a motor provided inside the film winding chamber 38. A film winding spool 39 and a sprocket 40 are provided which are rotatably driven by a driving source such as the like.

Further, at the rear end of the interior of the protruding portion 35, a printed circuit board 41 is provided, which is connected to the printed circuit board 9.14 by an electrical connection such as a flexible printed circuit board (not shown).

The number of remaining frames of the film is displayed on the rear surface of this printed circuit board 41.
Number of film frames taken and shutter speed.

A liquid crystal display board (hereinafter abbreviated as LCD) 42 that displays various photographic information such as aperture value and exposure correction amount is electrically connected.

This LCD 42 transmits the various photographic information to the camera 1 via a transparent protective panel 43 fixed to the rear end surface of the protrusion 35.
Display toward the rear.

The printed circuit board 41 is connected to the LCD 42. protection panel 4
3, and this widened part has an LCD 42.3 as shown in the rear view of FIG. Switches are provided that are opened and closed by operation buttons 44 to 47 provided on the side of the protection panel 43.

These switches, for example, are used to select frequently used shooting operations such as exposure compensation settings and exposure mode settings.The photographer can control the camera 1 by operating the operation buttons 44 to 47 as appropriate. Change various shooting operations,
can be controlled.

Furthermore, an opening/closing plate 52 is provided below the LCD 42 and can be opened and closed with respect to the protrusion 35. When this opening/closing plate 52 is opened, it is possible to rewind the film before the end of the film, change data imprinted on the film, etc. A switch member for setting 9 and selecting a photographing operation that is usually not used frequently is exposed on the outside of the camera.

A rear portion of the back cover 3 of the film magazine storage chamber 6 has a thin wall portion 5 whose rear end surface is formed in front of the protruding portion 35.
3 is provided.

Even if you place your thumb on this thin part 53,
The dimensions are such that the thumb does not protrude further back than the protrusion 35.

The side of this thin wall portion 530 is continuous with the grip portion 30 and forms a rear half portion 54 of the grip portion 30 .

The lower end of this rear half part 54 is formed on the same plane as the thin part 53, and the upper end protrudes rearward from this plane, so that when the grip part 30 is gripped by the photographer, the thumb of the photographer's finger will It is designed to hang.

Next, various external parts of the camera 1 in this embodiment will be explained using the plan view shown in FIG.

A power switch 55 is arranged at the rear left of the top surface of the camera body 2, and by sliding it toward the front of the camera 1, the power of the camera 1 is turned on.

A pair of zoom operation buttons 56 and 57 are provided on the right side of the outer wall 32 that covers the lens barrel 16, and by pushing the operation buttons 56, the lens barrel 16 can be moved to the long focal point side. By pushing the operation button 57, zooming is performed to the short focus side.

A release button 58 is arranged at the front of the upper surface of the grip section 30, and by pressing this button, a photographing operation is started.

An operating knob 59 is provided on the right side of the flashlight emitter 26, which opens the flashlight emitter 26 as shown in FIG. 3 when operated.

Next, the operation of the camera 1 in this embodiment will be explained.

First, turn on the power switch of the camera, release the back cover locking mechanism (not shown) in order to load film into the camera 1 prior to shooting, and then move the camera body 2 as shown in the cross-sectional view of FIG. Open the back cover 3.

And the film magazine 6 is placed in the film magazine storage chamber 6.
0, and place the tip of the film 61 extending from the opening of the film magazine 60 near the shaft 34.

When the back cover 3 is closed with respect to the camera body 2 in this state, this is detected by a back cover closing operation detection means (not shown), and the sprocket 40 begins to rotate counterclockwise in FIG. 6.

As a result of this rotation, the sprocket 40 and the perforations of the film 61 engage with each other, and the leading end of the film 61 is sent into the film winding chamber 38 in front of the film winding spool 39 .

When the film winding spool 39 begins to rotate clockwise after a certain period of time has elapsed from the start of rotation of the sprocket 40,
The leading end of the film 61 is wound onto the film winding spool 39.

At the same time, the sprocket 40 is separated from the drive source,
From now on, the rear sprocket 4o rotates following the conveyance of the film 61, and becomes a member that detects this conveyance plate by rotation.

When photographing, as shown in the perspective view in FIG. 7, the grip section 30 of the camera 1 is held with the fingers of the right hand, the index finger is placed on the release button 58, and the fingers of the left hand are placed on the outer wall of the lens barrel 16. 32, so that the thumb is just lightly pressing the vicinity of the zoom operation buttons 56 and 57.

To take a photograph, the release button 58 may be pressed to execute the photographing sequence, and to change the focal length of the lens barrel 16, the zoom operation buttons 56 and 57 may be sequentially operated.

As described above, by arranging the winding device, which was conventionally located on the opposite side of the grip 1 knob 35, behind the opening 5, that is, behind the lens barrel 16, no rotational moment is applied to the grip 30, and the front and rear weights are reduced. You can get a balance or a good camera.

In addition, in the camera 1 according to the present embodiment, the eyepiece lens 23 of the finder optical system 24 is arranged above the protrusion 35, so when looking through the eyepiece lens 23 with the right eye, objects that obstruct the view in front of the left eye. This left eye can also be used to observe the imaging area.

Furthermore, when the camera 1 is placed in a vertical position with the grip portion 30 facing upward, 16 outer walls 3 of the lens barrel are formed flat.
2 is supported by the palm of the left hand, making it possible to hold it stably.

Next, a second embodiment of the present invention will be described using FIG. 8.

FIG. 8 is a horizontal sectional view of the camera in this embodiment.

In this embodiment, the same members as those of the camera 1 in the above-described first embodiment are given the same reference numerals, and detailed explanations will be omitted.

The camera 62 is divided into a camera body 2 and a back cover 63 disposed at the rear of the camera body 2, as shown in FIG.

This J! ! f63 is a stationary part 64 that is integrated with the camera body 2 in a portion facing the wall surface 12 of the film magazine storage chamber 6, and a shaft 65 provided in this stationary part 64.
It is divided into an opening/closing part 66 which is pivotally supported so as to be freely openable and closable.

The opening/closing portion 66 is locked to the camera body 2 by a locking mechanism (not shown) provided on the camera body 2.

An initial hoisting sprocket 67 is disposed near the interface between the stationary portion 64 and the opening/closing portion 66, and this initial hoisting sprocket 67 is connected to a hoisting drive mechanism (not shown) and is rotationally driven. It has two states: a state in which it is connected, and a state in which this connection is released and it is rotated by conveyance of the film.

Next, the operation of the camera 63 in this embodiment will be explained.

First, turn on the power switch of the camera 63, release the back cover locking mechanism (not shown) in order to load film into the camera 63 prior to shooting, and open/close the opening/closing member 6 from the camera body 2.
5 is opened.

And the film magazine 6 is placed in the film magazine storage chamber 6.
0, and the leading end of the film 61 extending from the opening of the film magazine 60 is inserted between the camera body 2 and the stationary part 64.

If the opening/closing member 65 is closed with respect to the camera body 2, this will be detected by the back cover closing operation detection means (not shown).
The initial soil rolling sprocket 67 begins to rotate counterclockwise in FIG.

As a result of this rotation, the initial soil rolling sprocket 67 and the perforations of the film 61 engage with each other, and the leading end of the film 61 is conveyed to a position overlapping the sprocket 40.

Then, the sprocket 40 starts to rotate counterclockwise in FIG. 8, and this rotation causes the sprocket 40 and the film 61 to
The perforations of the film 61 are engaged with each other, and the leading end of the film 61 is fed forward to the film winding frame 39.

At the same time, the initial hoisting sprocket 67 is disconnected from the drive source, and the subsequent initial hoisting sprocket 67 rotates as the film 61 is conveyed.

When the film winding spool 39 begins to rotate clockwise after a certain period of time has elapsed from the start of rotation of the sprocket 40,
The leading end of the film 61 is wound onto the film winding spool 39.

At the same time, the sprocket 40 is separated from the drive source,
From now on, the rear sprocket 40 rotates following the conveyance of the film 61, and becomes a member that detects the amount of conveyance through rotation.

In this embodiment, the film is loaded after the power switch is turned on, but the program executed by the CPU in the camera 1 is adjusted and the power switch is turned on.
Of course, the film loading operation may be started by closing the back cover.

When photographing, it is sufficient to hold the camera as shown in the perspective view in FIG. 7 and photograph, as in the first embodiment.

By configuring as described above, the camera 63 in this embodiment not only obtains the same effect as the camera 1 shown in the first embodiment described above, but also has the ability to
Since the weight of the opening/closing member 65 that opens against the camera 65 is small, even if the camera 63 is tilted so that the grip portion 30 is facing downward while the opening/closing member 65 is open, the problem of the camera 63 closing due to its own weight can be eliminated. .

In addition, the above-mentioned 1. In the second embodiment, the grip part 30 is shaped to extend in the height direction of the cameras 1 and 63, but it is also shaped to extend in the direction parallel to the optical axis on the side of the lens barrel 16. Of course, it is also possible to have a continuous shape.

[Effects of the Invention] As detailed above (in the present invention, the film winding device, which was conventionally disposed on the opposite side of the grip section across the lens barrel, is disposed behind the photographing lens.
The front and rear balance is good, and the center of gravity is 1. Since the camera is moved toward the tap section, it is possible to obtain a camera that is easy to hold and prevents photographing errors such as camera shake.

[Brief explanation of the drawing]

1 is a horizontal sectional view of the camera according to the first embodiment of the present invention; FIG. 2 is a vertical sectional view of the camera; FIG. 3 is a vertical sectional view showing the activated state of the flashlight emitting device in the camera; 5 is a plan view of the camera; FIG. 6 is a horizontal sectional view showing the back cover of the camera in an open state; FIG. 7 is a perspective view showing the camera in a gripped state; FIG. 8 is a horizontal sectional view of a camera in a second embodiment of the present invention. 1.62...Camera 2...Camera body 3.63.
...Back cover 5...Opening 6...Film magazine storage chamber 16...Lens barrel 80...Grip part 39.
・・Film winding spool (film) cover ff) 4
0... Sprocket (film winding device) 67...
Sprocket for initial soil rolling (film winding device)

Claims (2)

[Claims] (1) In a camera that is used with film loaded into the camera body, there is an opening provided in the camera body that defines the shooting light flux and forms the shooting screen; a film magazine storage chamber for storing a magazine; a lens barrel disposed in front of the opening; a grip portion provided to cover the film magazine storage chamber; A camera comprising: a film winding device disposed behind the opening for winding the film; (2) The camera according to claim 1, wherein the film winding device is disposed within the back cover of the camera, and comes into contact with the film and winds it when the back cover is closed.