JPH0545708A - camera - Google Patents

Abstract

PURPOSE:To obtain a camera in which a film is perfectly shielded from light and which is suitable for a child by shielding a camera main body forming a film chamber from the light by photographing functional parts, forming a part of an outside structural member of a transparent material and further covering the outside of the structural member with a transparent exterior member. CONSTITUTION:A front cover 5 is held so as to freely rotatably around a shaft 6 by the hinge 1C of a camera main body and a hinge 5a so that it becomes the outside appearance of the front surface and the upper and lower surfaces of the camera and the internal mechanism(a shutter, a film feeding mechanism, etc.) of the camera is easily seen. A part of the structural member arranged outside the photographing functional parts, for example, a battery chamber block 21 is formed of transparent plastic and further the cover 5 being the exterior member for the outside of the structural member is constituted of the transparent member. Therefore, photographing is executed in a state where the internal mechanism is seen.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera which is designed so that a photographer who is new to photography, especially a child who holds the camera for the first time, can enjoy photography while learning the mechanism of the camera.

[0002]

2. Description of the Related Art In a conventional camera, a film chamber formed in a camera body is provided with a dark box completely shielded from light by a back cover, an exterior cover, and some mechanical parts so that a loaded film is never exposed except when photographing. Is configured to be.

[0003]

However, in order to make the internal mechanisms of the camera (shutter, film feeding mechanism, circuits, electric parts, etc.) visible for learning by children and beginners of photography, an external cover is required. In the case where the film chamber is easily disengaged, the film chamber cannot be shielded completely because there is a gap between the camera chamber and the camera body at a place where the mechanism is installed inside and outside the film chamber. Therefore, when looking at the internal mechanism of the camera, if the user forgets that the film is loaded and accidentally removes the exterior cover, the loaded film is exposed.

For the same reason, the exterior cover cannot be made transparent. For example, it is as follows when showing the part which is not shielded concretely.

(1) Normally, in the mounting portion of the camera body and the shutter, since only the light rays that have passed through the photographing lens pass through the opening of the shutter, it suffices to securely shield the cylinder around this opening. However, if the exterior cover is removed, the light rays will strike the shutter blade drive mechanism and actuators outside the cylinder around the shutter opening, and also the outermost circumference of the shutter unit.
Therefore, as shown in the central longitudinal sectional view of the conventional camera of FIG. 14, the lever 23 for driving the shutter blades 228, 229 is used.
If the escape of the locus of the second pin 232c is provided by a hole that penetrates the shutter unit from the front to the back, or if the shutter unit is fixed to the camera body, especially at the outermost peripheral portion of the shutter base plate 226 without considering light shielding. A light beam easily leaks into the film chamber 201a as indicated by an arrow in the figure.

(2) In the spool portion for winding the film, as shown in FIG. 15, the gear base plate 238 and the gear retainer 244 are transparent so that the gear train can be seen. The rays of light pass through the gap between the camera body 201 and the film winding spool 237 and leak into the film chamber 201a as indicated by the arrow.

(3) As shown in FIG. 16, in the fork portion which engages with the shaft of the film cartridge for rewinding the photographed film, as shown in FIG. 16, the gear retainer 244 is provided so that the gear train can be seen as before. Is transparent, so fork 2
The light beam leaks into the film chamber 201a as shown by the arrow through the hole 246a of the fork 46 and the gap between the fork and the fork gear 243.

An object of the present invention is to solve the above-mentioned various problems and to provide a camera suitable for children or beginners, which is completely shielded from light and is configured so that the inside can be seen through as much as possible. It is to be.

[0009]

The camera according to the present invention has the following features.

(A) The camera body, which is made of a light-shielding material and forms the film chamber, includes a back cover, a shutter member, a film winding spool member, a film rewinding fork member, and the like.
Light shielding is performed by using a photographing function component directly attached to the camera body, and at least a part of a structural member arranged outside the photographing function component is formed of a transparent material, and the outside can be opened or closed or detached. (B) The camera body, which is made of a light-shielding material and forms the film chamber, is covered with an exterior member made of a non-transparent material, such as a back cover, a shutter member, a film winding spool member, and a film rewinding fork member. Light shielding is performed by using a photographing functional component that is directly assembled, and at least a part of a structural member disposed outside the functional component is formed of a transparent material, and at least a part of an outer side thereof is formed of a transparent material. By covering with the member, the internal mechanism of the camera can be seen without exposing the film even when the film is loaded in the camera.

[0011]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS.

1 to 11, 1 is a camera body,
It is made of a light-shielding grade mold member, and can form the film chamber 1a and can be assembled with each mechanical component around it. Reference numeral 2 denotes a back lid, which is openably and closably held by the camera body by a hinge (not shown) so that the film can be taken in and out. With the member closed, the film chamber 1a is locked to the camera body so as to form a dark box.
In the closed state of the back lid, the rib 1b of the camera body and the rib 2a of the back lid are inlays and extend over the entire circumference of the back surface of the camera as shown in E of FIG. Reference numeral 5 denotes a front lid, which has the appearance of the front and upper and lower surfaces of the camera and has internal features (shutter, film feeding mechanism, circuits, electric parts, etc.) which are major features of the camera.
Hinge 1c on the camera body to make it easier to see
It is rotatably held around the shaft 6 by a hinge 5a. Another major feature of this camera is the front group 7a of the taking lens and the front group 8a of the finder lens (Fig. 5).
Holes 5b and 5c for the photographic lens and the finder lens, which can hold the pair of front groups and can hold the front group unit 9 as a set so that the focal length can be changed by exchanging the pair as a pair.
The front lid 5 has.

When the front lid 5 is closed around the axis 6 described above, the optical axes of the front lens group 7a and the rear lens group 7b of the taking lens and the front lens group 8a and the rear lens group 8b of the finder lens coincide with each other.

Reference numeral 5d is a lock claw formed on the front lid 5, and when the front lid 5 is closed, it engages with a lock member 10 provided on the camera body side to hold the front lid 5 in a closed state.

The lock member 10 is directly connected to the front lid lock knob 11 and is biased by a spring (not shown) or in the downward direction of FIG. To open the locked front lid 5, the front lid lock knob 11 may be slid upward.
5e is provided on the front lid 5 and is provided for pressing the battery 12 when the front lid 5 is closed so that the loaded battery 12 does not rattle and contact failure occurs between the battery contact pieces 13 and 14. It is a protrusion. Reference numeral 15 is a release button, which is held by the front lid 5, and when the front lid 5 is pushed in when the front lid 5 is closed, the protruding portion 15a is released.
The pad 16 of the push switch shown in is pressed to release. Reference numeral 5f denotes a film counter window provided on the front lid 5, which coincides with the position of the film counter display portion 17 which is provided on the main body side and shows the number of frames for film shooting when the front lid 5 is closed. A photometric lens 48 guides the light to a photometric sensor (not shown). 5g is a photometric lens window corresponding to the photometric lens position. 7b is a rear group of the photographing lens, and a front group unit 9
When the lens is attached, it becomes a predetermined focal length in combination with the front group 7a, and it becomes possible to shoot. Reference numeral 8b denotes a rear group of the finer lens, which forms a finder optical system corresponding to the focal length of the photographing lens when the front group unit 9 is mounted.

A block member 18 holds the rear group 8b of the finder lens and the photometric unit, and has a film counter display section 17, which is fixed to the upper surface of the camera body. Reference numeral 19 is an electric component such as a microcomputer for controlling the camera. Reference numeral 20 denotes a mounted circuit board, which electrically connects the microcomputer, a battery contact piece, a motor, a plunger, a film counter display portion, and signal contact pieces (not shown). Reference numeral 21 denotes a battery chamber block, which forms a battery chamber for connecting and holding the battery 12 and
The electric components 19 such as a microcomputer, the mounting circuit board 20, the battery 12, and the battery contact pieces 13 and 14 are made of a transparent plastic material so that they can be seen from the front and the top.
Further, the portions having no influence on the strength are perforated for weight reduction like 21a and 21b. Reference numeral 22 denotes a back cover, which is an exterior component for covering the upper and lower parts of the back surface of the camera other than the back cover 2, and although not shown, the upper and lower sides are connected to each other on the hinge side surface of the front lid 5. Reference numeral 23 denotes a side cover, which is an exterior component that covers the side surface of the front lid 5 opposite to the hinge side.

Reference numeral 24 is a main switch of the camera, which is turned on when moving to the right when viewed from the back of the slide switch provided on the upper right portion of the back of the camera, and turned off when moved to the left. Reference numeral 25 denotes a rear lens group holder for holding the rear group 7b of the photographic lens, which has a male screw on the outer periphery and is screwed with a female screw provided inside the cylindrical portion 26a of the shutter base plate 26. Since the rib 1d of the camera main body and the rib 26b of the shutter base plate are inlays and the shutter unit is fixed to the camera main body as shown by F in FIG. 6,
Even if the front lid 5 is opened like 7, 8, light does not leak.

A diaphragm plate 27 determines the aperture when the shutter is opened. 28 and 29 are shutter blades, and the exposure to the film is adjusted by the opening diameter formed by the opening degree of these two blades and the opening / closing time. Then, unless the release button 15 is pressed to take a picture, the shutter blades 28,
29 is closed to block the light from the film. Reference numeral 30 denotes a shutter control plunger, which draws the moving element 30a against the spring 30b by energization. 31 is a transmission lever, and the shaft 31
The lever is pivotally supported about a, one end 31b of the lever is engaged with the mover of the plunger, and the other end 31c is brought into contact with the blade drive lever 32.

The blade drive lever 32 is rotatably supported around a shaft 32a, and the transmission lever end 31 is provided on the front side of the lever.
It has a pin 32b which is in contact with c and serves as a spring hook, and has a blade drive pin 32c on the back side which is fitted in the holes of the shutter blades 28 and 29 to transmit the opening / closing drive force to the shutter blade. Reference numeral 33 is a blade opening spring, which applies a rotational force in the clockwise direction to the blade driving lever 32 to urge the shutter blades 28 and 29 in the opening direction. A cover plate 34 is a shutter base plate 2
6 is arranged so as to oppose to each other and forms a traveling space for the shutter blades. Here, considering the light shielding, the blade drive pin 32
The cover plate 34 is formed as a groove (34a) in which the meat is left so as not to penetrate the escape of the movement trajectory of c. 27 ~ 3
The shutter component No. 4 is held by the shutter base plate 26.

When the front lid 5 is closed and the front group unit 9 is mounted and the camera is ready for photographing, as shown in FIG. 4, the lens barrel portion 1e of the camera body and the rib 9a of the front group unit are inlays. Blocks light that enters the lens barrel from the outside. A film feeding motor 36 is fixedly held in a film take-up spool 37 by a transparent gear base plate 38 and a motor light shielding member 39 as shown in FIG. 40 is a motor pinion. 41 is a film feeding gear train, which is a planetary gear 42 on the way.
Thus, the forward / reverse rotation of the film feeding motor is switched and transmitted to the spool gear 37a provided on the film winding spool and the film rewinding fork gear 43. The film take-up spool 37 is fitted and supported by the camera body 1 and the transparent gear base plate on the lower side and by the motor light-shielding member 39 on the upper side, and is rotated by the power transmitted to the spool gear 37a to wind the film (FIG. 9). The transparent gear base plate 38 is the film feeding motor 3
6 as well as the film feed gear train 41,
And it is made of transparent plastic material so that the gear arrangement and movement can be seen from the outside. Reference numeral 44 denotes a transparent gear retainer, which is made of a transparent plastic material so as to prevent the film feeding gear train 41 from coming off and to see the gear arrangement and movement from the outside. And, 44 is the place that has no influence on strength.
There are holes like a and 44b for weight reduction. Four
Reference numeral 5 is an electrode of the film feeding motor 36, which is opposed to the +-
There are two and they are soldered to the mounting circuit board 20.

Here, considering light shielding of the film take-up spool, as shown in G in FIG. 9, the cylindrical rib 1f of the camera main body and the cylindrical rib 37b of the film take-up spool become spigot from the outside. The light entering the chamber 1a is blocked. In addition, as shown in the H section, the cylindrical rib 1 of the camera body
g and the cylindrical rib 39a or the step portion 39b of the motor light shielding member
Turns into a spigot and blocks light entering the film chamber 1a from the outside.

A film rewinding fork 46 has a fork portion 46a that engages with the shaft of the film cartridge, and a notched cylindrical portion 46b that engages with the engaging portion 43a of the film rewinding fork gear. The film rewinding fork gear is provided with a half-moon shaped hole 43b so that it can be engaged with the notched cylindrical portion 46b. Reference numeral 47 is a fork spring that allows the film rewinding fork to move up and down so that the film cartridge can be easily taken in and out. Is always biased upward.

Considering the light shielding of the film rewinding fork portion, in FIG. 10, the cylindrical ribs 1h and 1i of the camera body and the cylindrical rib 46c of the film rewinding fork are spigots, and the film winding Return fork 4
Since 6 does not have a through hole at all, the light coming through the half-moon shaped hole of the fork gear cannot enter the film chamber 1a. Further, as shown in FIG. 11, even if the film rewinding fork 46 is pushed downward until it hits, the cylindrical ribs 1h and 1i and 46c can form a spigot, so that light similarly enters the film chamber 1a. Can not.

In the present embodiment, the front lid 5 is openable and closable by means of a hinge, but it may be detachable by means of screws or known patching.

Next, a method of using the camera having the above structure will be described. The camera user selects the front group unit 9 so as to obtain a desired focal length, opens the front lid 5, sets the front group unit 9 on the front lid 5, and closes the front lid 5. Since the subsequent operation is no different from that of a known camera, it will be briefly described.
When the main switch 24 is turned on, the back cover 2 is opened and the film is loaded, and the back cover 2 is closed, the ISO sensitivity of the film is read by the DX reading switch (not shown), and the photographing is possible.
The film is automatically fed to the frame and the preparation for shooting is completed.

When the composition is determined through the viewfinder and the release button 15 is depressed, the photometric sensor senses the brightness of the outside world, and the microcomputer determines the exposure as well as the ISO sensitivity of the loaded film. Then, the program shutter that doubles as a diaphragm and shutter operates. In the operation, first, when the plunger 30 is energized, the mover 30a is retracted against the spring 30b, and the transmission lever 31 is rotated counterclockwise about the shaft 31a. Then, the blade drive lever 32 is urged clockwise by the blade opening spring 33 about the shaft 32a, so that the blade drive lever 32 follows the end 31c of the transmission lever 31 and rotates clockwise about the shaft 32a. Therefore, the shutter blades 28 connected to the blade driving lever 32 by the blade driving pin 32c,
29 begins to open. And when the specified opening diameter is reached,
A blade position detection sensor (not shown) obtains a signal to cut off the power supply to the plunger 30. Then, the spring 30
The slider 30a is pushed back by b (the spring 30b is strong and is set so as to push back the blade opening spring 33), and the shutter blades 28 and 29 are closed via the respective levers to complete the exposure.

Next, the film feeding motor 36 is energized, and the rotation is transmitted to the film take-up spool 37 via the film feeding gear train 41. The film is wound up one frame and the film counter 17 is advanced one frame, The preparation for shooting is complete. When the last frame of the film has been photographed in this way and the last frame of the film has been photographed, the film feeding motor 36 is energized in the opposite direction, the planetary gear 42 arranged in the middle of the film feeding gear train 41 is switched, and the motor 36 is moved. Is transmitted to the film rewinding fork to rewind the film. When the rewinding is completed, the motor 36 is stopped and the photographer opens the back cover 2 and takes out the photographed film.

(Embodiment 2) FIGS. 12 and 13 are views showing a second embodiment of the present invention. FIG. 12 is a central longitudinal sectional view when the front lid of the camera is opened, similar to FIG. 13 is a partial cross-sectional detailed view of the film winding spool portion as in FIG. 9.
Note that FIGS. 12 and 13 are shown for explaining the points different from the first embodiment, and the other portions are the same as those in the first embodiment. Therefore, only the points different from the first embodiment will be described below. Further, the components having the same functions as those in the first embodiment are indicated by the numbers used in the first embodiment plus 100.

In FIG. 12, the outermost peripheral portion of the shutter base plate 126 is surface-supported by the receiving portion 101j of the camera body like the portion I over the entire circumference, and the shutter unit is fixed to the camera body. Then, the step portion 101 is formed on the camera body.
k is also formed over the entire circumference, and the front surface thereof is flush with the front surface of the shutter base plate 126. Furthermore,
A donut-shaped light shielding member 150 is bonded to the front surface of the step portion 101k and the front surface of the shutter base plate 126 so as to cover the gap between the inner periphery of the step portion 101k and the outer periphery of the shutter base plate 126. Therefore, even if the front cover 5 is opened, the shutter unit is removed and the film chamber 101a is opened.
Light never enters inside.

In FIG. 13, the light shielding of the film take-up spool portion is shown on the surface 101l (101 ell) on the camera body side so as to cover the fitting gap between the camera body and the film take-up spool, as shown at J portion. Donut-shaped light blocking member 151
Are glued together. Therefore, the light entering the film chamber 101a from the outside is blocked.

The shading of the film rewinding fork portion is the same as that of the first embodiment.

(Embodiment 3) The third embodiment of the present invention is the same as the first embodiment except that the front lid 5 shown in the first embodiment is transparent. .. Therefore, the description of the structure and operation is omitted. Thus, even if the front lid 5 is transparent, light does not leak into the film chamber as long as it has the light-shielding structure described in the first embodiment.

Therefore, in the above-described first and second embodiments, the front lid must be opened to show the internal mechanism, and the front group unit 9 cannot be mounted with the front lid open. It was not possible to take a picture with the film visible, and the film wasted to see the movement of the internal mechanism with the film loaded. However, in the third embodiment, the photo can be taken with the internal mechanism visible. Moreover, since the person who is the subject can see the movement of the internal mechanism when taking a picture, the fun of shooting increases.

Even if the camera of the third embodiment is a camera in which the front lid 5 cannot be opened and closed and the photographing lens cannot be replaced, if the front lid 5 is transparent, the internal mechanism of the camera remains visible as in the case described above. It goes without saying that you can take pictures.

[0035]

As described above, in the camera of the present invention, the camera body forming the film chamber is shielded from light by using photographing function parts such as a shutter member and a film feeding member which are directly assembled to the camera body. In addition to doing this, the structural members placed on the outside are made of a transparent material, and the outside is covered with an exterior member made of a non-transparent material that can be opened or closed or detached. Therefore, the internal mechanism of the camera can be easily viewed without exposing the film even when the film is loaded in the camera.

Further, by making the exterior member transparent, a photograph can be taken even while the internal mechanism is visible. Therefore, depending on the photographing method, the photographer or the person who is the subject can see the movement of the internal mechanism of the camera at the time of photographing. Has the effect of increasing the fun of.

[Brief description of drawings]

FIG. 1 is a front view of a camera according to a first embodiment of the present invention.

FIG. 2 is a top view of the camera shown in FIG.

FIG. 3 is a bottom view of the camera shown in FIG.

FIG. 4 is a vertical cross-sectional view of the camera shown in FIG.

5 is a front view of the camera of FIG. 1 when a front cover is opened.

FIG. 6 is a top view of the camera of FIG. 1 when a front cover is opened.

FIG. 7 is a bottom view of the camera of FIG. 1 when the front lid is opened.

FIG. 8 is a vertical cross-sectional view of the camera shown in FIG. 1 when the front lid is opened (A
-A arrow view).

9 is a partial cross-sectional view of a film winding spool portion (FIG. 5C portion) of the camera of FIG.

10 is a partial cross-sectional view of a film rewinding fork portion (D portion in FIG. 5) of the camera in FIG.

11 is a view of the same portion as FIG. 10 when the fork is pushed down.

FIG. 12 is a vertical cross-sectional view of the central portion of the camera of the second embodiment of the present invention with the front lid open.

13 is a sectional view of the film winding spool of the camera shown in FIG.

FIG. 14 is a diagram for explaining a state in which light rays leak into a film chamber in a conventional camera.

FIG. 15 is a diagram for explaining a state in which light rays leak into a film chamber in a conventional camera.

FIG. 16 is a diagram for explaining a state in which light rays leak into a film chamber in a conventional camera.

[Explanation of symbols]

1, 101: camera body 1a, 101
a: Film chamber 2, 102: Back lid 5: Front lid 9: Front group unit 12, 112:
Battery 19: Electrical components such as microcomputer 20,1
20: Mounted circuit board 21, 121: Battery chamber block 22, 122:
Rear cover 26, 126: Shutter base plate 28, 29, 128,
129: Shutter blade 32, 132: Blade driving lever 34, 134:
Cover plate 36, 136: Film feeding motor 37, 137:
Film take-up spool 38,138: Transparent gear base plate 39,139:
Motor light shielding member 41, 141: Film feeding gear train 43, 143: Film rewinding fork gear 44, 144: Transparent gear retainer 46, 146: Film rewinding fork 150, 151: Light shielding member E part, F part, G part , H part, 1i, 1h, 46c: Inlay part I part, J part: Shading member mounting part

Claims (2)

[Claims] 1. A camera body having a film chamber and entirely made of a light-shielding material, and a shutter member and a film which are themselves constructed as a light-shielding means and are directly assembled to the camera body. A photographing functional component such as a feeding member, a structural member that is at least partially made of a transparent material and is arranged outside the photographing functional component, and a non-transparent material that is attached to and detached from the outside of the structural member. A camera capable of seeing through the interior, which has an exterior member that is openable and capable of opening and closing. 2. The camera according to claim 1, wherein the exterior member is made of a transparent material and covers at least a part of the outside of the structural member.