CN1069578A - Data writing device and camera with non-replaceable film - Google Patents

Abstract

Data writing device (40) is to lower frame body (50) and upper frame body (60) The jaws are combined into an integrated assembly, and it is from the upper frame (60) insert year and month data indication wheel (70), day indication wheel (80) outside Shafts (71), (81), are pressed into the flanged inserts from the outside of the lower frame (50) Pins (78), (88) to secure the write data board (75), (85) to the shaft (71), the device of (81) front end. In lower frame body (50) and upper frame body (60) A light-emitting diode (91) is housed on the clip-in structure of the The light reflected and projected on the film through the light holes (53a), (53b) Rear reflector (96).

Description

The present invention relates to a data writing device for writing data such as date, month, and date on a photographic film, and more specifically, to a non-replaceable film camera with a simple structure commonly called a disposable camera or a disposable camera. Applicable simple and inexpensive small data writing device.

A non-replaceable film camera, often referred to as a disposable camera or a disposable camera, is composed of a roll of film preloaded in the case, a simple manual film winding mechanism, a simple manual shutter mechanism, and It is composed of a photographic lens and the like, and there is no film replacement mechanism that the user can operate by himself. Therefore, only the prescribed number of sheets of a roll of photographic film can be photographed, and it is impossible for the user to change the film by himself. Such a camera with a non-replaceable film is cheap if it can be purchased with a certain increase in the unit price of the photographic film. In a sense, it can be called "film with lens". Therefore, it has the advantage of being easy to use when you do not have your favorite camera at hand, such as traveling or gatherings. Even this non-replaceable film camera is equipped with a flash device like a normal camera, but it is not equipped with a data writing device for writing data sets such as the year, month, and day into the photographic film. Although the number of photographs taken by a camera with a non-replaceable film is limited, and the period of use must also be limited, it is still strongly required to leave data on each photo in the photo arrangement.

Conventionally, most photographic cameras such as general 35 mm twin-lens reflex cameras or single-lens reflex cameras are equipped with data writing devices for cameras (camera miniature modules). This data writing device for cameras, as shown in FIG. 36, is mounted on the back of the photo film 2 inside the camera back cover 1, and exposes the digital group of the year, month, and day data against the back of the photo film. The data writing device has light source 3a such as light-emitting diode or tungsten bulb in the resin box that is about 3cm in length and width and about 3mm in thickness, and the light emitted by the light source along the plane of the box is reflected at right angles and deflected to the thickness direction of the box. The reflection mirror 3b of the reflective light, and the transmissive liquid crystal display 3c illuminated by the reflected light, and the shading plate 3d etc. which limit the illumination range of the display, so that the data digit group shape obtained by the transmissive liquid crystal display 3c The transmitted light is projected onto the back of the photographic film 2 intact with parallel beams. Since the digital group of writing data changes the digital signal of the liquid crystal driver through an external operation, the multi-digit number of the year, month, and day represented by the transmissive liquid crystal display 3c can be changed freely. Therefore, the written year, month, and day data There is no limit.

The data writing device (mechanism, micro-component) for a camera with such a structure may also be applicable to a film non-replaceable camera, but because the cost of electronic devices such as the transmissive liquid crystal display 3c and its driving integrated circuit is high, it is difficult to The advantage of cheapness of a camera whose film cannot be replaced is lost. Therefore, a practical data writing device applicable to a non-replaceable film camera should be simple and inexpensive. Because the role of the transmissive liquid crystal display 3c is to make the illuminating light take the shape of the data light and project it, the inventor's proposal is to replace this transmissive liquid crystal display, and focus on, for example, the year, month, and day data with light transmission. The writing data plate at the top can be rotated by hand to select the appropriate writing data number.

In such a case, the number of data that can be written into the data section (year, month, day) that can be displayed on the data plate is naturally limited by the area, but since the film cannot be replaced, the camera can only be used within a certain period of time. , so as long as the year, month and day data of a certain period can be selected. But for a writing device that changes during use, it is necessary to equip a writing data board with updated data. Therefore, there is a need for a writing device having a structure in which a data plate can be easily attached and detached.

However, to adopt a data device with a write-in data plate, even if it is a simple and low-cost structure, the device itself must be structurally suitable for a non-replaceable film camera, and it must have a small structure (for example, about 3 cm in length and width, thickness about 3mm) design conditions. Moreover, the data writing device using the light-transmitting liquid crystal display mounted in the existing camera can select data through electronic static operation, but because the writing data plate is movable, it must be fully considered Problems such as the looseness of the data board written in the structure. Because, when problems such as eccentric rotation, looseness, bending, etc. occur when writing the data plate, the transmitted light passing through the data part is disturbed, so that the data digits exposed on the photographic film are deformed, defective, blurred, etc. , resulting in deterioration of exposure quality. In such a writing device using a movable structure system, there must be a data selection mechanism for its exposure quality problem. That is, it is necessary to select a so-called specific data section such that the writing data plate turns to a specific position and remains stationary in this position.

Therefore, in order to realize the purpose of an inexpensive and compact data writing device suitable for a camera that cannot be replaced with a film, the first subject of the present invention is to provide a data writing device that is easy to attach and detach a writing data board, and the second The problem is to realize the structure that can prevent the writing data plate from eccentric rotation, looseness, bending, etc., and the third problem is to realize a mechanism suitable for data selection on the writing device.

The main components related to the data writing device of the present invention are an upper frame, a lower frame, a light source, an optical facility, a data writing board, and a data indication wheel. The light source is housed in an assembly composed of an upper frame and a lower frame. The optical facility is a facility for projecting the light emitted by the light source to the outside through the light-transmitting hole of the lower frame. The writing data plate has a plurality of light-transmitting or light-shielding data portions at approximately equidistant positions from the center of rotation. And the data indicator wheel has a flange portion with a data indicator portion directly or indirectly corresponding to the data portion written in the data plate at a position approximately equidistant from the center of rotation.

The present invention adopts such structural components, and adopts a clip-in structure to form these components into a combined structure. That is to say, the feature of the present invention is that the data indicator wheel is located on the outer side of the upper frame and can rotate the assembly, while the data writing board is located on the outer side of the lower frame so that each data portion faces the selective ground. For the light-transmitting hole, the writing data plate can also be fixed on the data indicating wheel in a detachable manner. As a specific fixing form for installing the data writing board on the data indicating wheel, for example, a shaft that is structured as a data indicating wheel and passes through the shaft hole of the above-mentioned assembly is provided, and a bolt with a flange is used for writing the data board, etc. fixed on the front end of the shaft. It is possible to make fine adjustments by turning the data wheel back and forth by hand to select the appropriate data to write to the data plate, but in the present invention a data selection mechanism that does make the data plate rotationally stationary is used. That is, the data selection mechanism is composed of a ratchet gear formed on the inner surface of the flange portion of the data indicating wheel, and a jumper that engages with the ratchet gear formed on the above-mentioned upper frame. Here, on one of the ratchet teeth or the jumper, it is preferable to form an inclined surface capable of transitioning to the meshing state when the upper frame body and the data indicating wheel are assembled. In addition, the data indicator wheel has an inner peripheral groove between the above-mentioned shaft portion and the above-mentioned ratchet tooth portion, and the upper frame preferably has a cylindrical portion fitted in the inner peripheral groove on the shaft hole opening flange. In addition, their engaging position is preferably near the light-transmitting hole.

The writing data board is not limited to one, and multiple boards can also be used. One data board may be used when the occupied space of the data part is relatively small, but separate data boards are used when data of different natures are to be written. However, when there are three or more data boards, it is difficult to arrange and change multiple data units in a single lighting range from a single light source. Because each data board is in one-to-one correspondence with the data indicating wheel, it is necessary to ensure that the flange portion of the data indicating wheel has a sufficient area. In fact, the writing data slab is composed of a disc-shaped first writing data slab and a disc-shaped second data slab. The aforementioned data indicating wheel is composed of a first data indicating wheel corresponding to the first written data plate and a second data indicating wheel corresponding to the second written data plate. In a related situation, the first data writing plate and the aforementioned second data writing plate are arranged in an overlapping area, and it is preferable to arrange the light-transmitting holes facing the overlapping area. Moreover, in the case where the data portion is light-transmissive, the light-transmitting hole is formed by the first light-transmitting hole facing the aforementioned data portion of the first writing data plate and the aforementioned data portion facing the second writing data plate. The second light-transmitting hole is formed, preferably, the first light-transmitting hole and the second light-transmitting hole are separated by a light-shielding partition. In this way, in the case of using two data boards, if you want to write the year, month and day data, it is best to set the year, month and month data on the first data board, and set the day data on the second one. write to the data board. In addition, it is preferable to provide non-light-transmitting non-data portions on the first and second data writing plates, respectively.

When applying the data writing device with the clip-in structure as described above to a non-replaceable film camera, the camera body is used as the structure for installing the data writing device, and the data light transmission hole is formed at the same time as the camera body. The exposure action of the shutter blade itself is the mechanical switch device of the lighting control circuit of the light source that is linked and closed. And as a lighting control circuit, it is preferable to have a timing power supply circuit for supplying power to the light source for a certain time due to the closure of the mechanical switching device in the aforementioned data writing device. In addition, it is preferable to attach a light source power supply battery to the data writing device side.

In a configuration in which the writing operation and the shutter blade are snapped, it is necessary to provide a mechanical switch device on the camera body side for detecting the shutter blade operation. In addition, in order to have the data writing function without causing excessive addition of camera parts and design changes, although the above-mentioned sandwich structure is adopted, the following circuit system must be provided on the data writing device side. That is, as a light source lighting control circuit, it is characterized in that there is a manual switch device that generates a lighting command signal for controlling the lighting of the light source, a detection device that detects the completion of film winding and generates a detection signal, and memorizes whether the film winding is completed or not according to the detection signal. A device in the completed state, and a timing power supply circuit that sends a detection signal at an appropriate time to make the internal battery supply power to the light source for a certain period of time when the film is in the state of completion of winding, and a device that prohibits power supply to the light source when the film is in the state of unfinished winding Prevents repeated lighting circuits. Here, the detecting device is a mechanical switch device that is inserted into the guide hole and opened and closed by an elastic member that moves up and down when the photographic film rolls up. In the case of adopting a data writing device having such a structure, the camera body is used as a mechanism capable of mounting the data writing device, and it is sufficient to provide a data light transmission hole.

In addition to automatic writing linked to the action of the shutter blade and manual writing after film winding is complete, part of the shooting light introduced into the camera body can also be used as the writing timing. That is, in the data writing device adopting the above-mentioned clip-in structure, an optical sensor is provided facing the lower frame to sense the light transmission portion, and the sensor sends out a light detection signal at an appropriate time to send the light from the built-in battery to the light source. Make a timing power supply loop for a certain power supply time. On the side of the camera body of the data writing device adopting this structure, as a structure for mounting the data writing device, a circuit for guiding the data light transmission hole and part of the imaging light to the sensor is formed. This optical path may also be a projection optical path formed by a guide hole of a photographic film. And it can also be a light transmission hole formed at the rear cover of the camera main body within the picture angle range of the photographic film. In addition, the optical path may also be a dedicated optical path formed outside the area occupied by the photographic film.

In this way, in the present invention, there is an assembly of clamping the first clamping structure with the upper frame and the lower frame of the light source and optical facilities, and clamping the assembly with the data indicating wheel and the writing data board. structure. Therefore, its combination and interchangeability of parts are better. In particular, because the write-in data board is on the outer side of the lower frame and the data indicating wheel is on the outer side of the upper frame, it is possible to write the data board and the data indicating wheel without disassembling the assembly of the two frames. It can be replaced, and the assembled body with a higher cost ratio can be reused. The writing data board is a structure fixed directly to the data indicating wheel, without a rotation transmission mechanism. Therefore, it is self-evident that the number of parts can be reduced as much as possible, the problem of transmission looseness will not occur when the rotation transmission mechanism is used, and the selection of writing data can be performed correctly. In addition, because the data selection mechanism composed of the ratchet gear and the jumping part is provided, it is possible to manually stop the data indicating wheel at every equal angle, so that the data part and the light transmission hole can be kept in constant contact. unanimous. Therefore, there is no deformation and shadow of the written data. Although the data is written by manual operation, the data exposure quality can be greatly improved. When an inclined surface is formed on one of the ratchet teeth or the jumper to make the upper frame body and the data indicating wheel assembled and brought into meshing state, the ratchet teeth and the jumper are guided by the inclined surface due to the assembly operation. The parts are naturally meshed, so no special operations are required to make the two mesh together. The inner peripheral groove formed on the data indicator wheel has a cylindrical portion fitted to the inner peripheral groove in the upper frame, so the supporting length of the bearing is longer than the depth of the inner peripheral groove. This helps to suppress the assembly looseness between the shaft and the shaft seat, and may also suppress the gap in the data part of the writing data board, so that it is hoped that the quality of writing can be improved. Moreover, when the meshing portion of the ratchet tooth portion and the jumping portion is near the light transmission, the offset in the data writing portion, etc., will have little influence due to loose meshing, so the deformation of the written data can be suppressed. .

In the case of using two writing data boards, the year, month, day data portion can be mounted on the two data boards, though it is only provided with an appropriate small box structure on a non-replaceable film camera. In this case, there is a year and month data part on one writing data board, and the day data part is on the other writing data board, as long as the data board with the year and month data part and its indicator wheel are replaced, it is possible Update all year month day data. When the first writing data plane and the second writing data plane are arranged in a range where they partially overlap, it is possible to prevent writing through light other than the data portion. Similarly, when the first light-transmitting hole and the second light-transmitting hole are separated by the light-shielding spacer, even if there is transmitted light other than the data part, the light-shielding can be shielded by the light-shielding spacer. In addition, when a non-data portion is formed on the data plate, it is possible to appropriately obtain a photograph without writing data.

Data can be written automatically by photographing operations by providing a mechanical switching device that closes the light source lighting control circuit in conjunction with the shutter blade exposure action of the camera itself. Similarly, in the data writing device, in the timing power supply circuit structure with a certain power supply time for the light source due to the closure of the mechanical switch, no matter how fast the shutter jumps, after completing the data exposure for a certain period of time, it can be used. There is no bias in the written quality (exposure) of each photo taken. Also, when a light source power supply battery is included in the assembly on the side of the data writing device, a writing test may be performed in advance using only the data writing device as a reliability test.

As the control circuit for lighting the light source, there is a manual switch device that generates a lighting command signal to control the lighting of the light source, a detection device that detects the completion of film winding and generates a detection signal, and the film winding completed or unfinished state memorized by the detection signal The memory device, and the timing power supply circuit that generates a detection signal when the film roll is completed, and the internal battery supplies power to the light source for a certain period of time, and the circuit that stops the power supply to the light source when the film roll is not completed, etc. In the structure, when the manual switch device is not operated, the data writing operation is not performed. When not writing data, it is not necessary to select the number indicating wheel and the non-data part of the data plate. Furthermore, since data writing is not performed when film winding is not completed, double writing can be prevented.

In the case of using a light sensor with a light-sensitive transmission part facing the lower frame, and a timing power supply circuit that uses the light detection signal sent by the sensor as a turning point to make the built-in battery supply power to the light source for a certain period of time, the light source can be turned on. The structure of the control circuit is simplified. In particular, when part of the photographic light is used as the optical path leading to the sensor, and the guide hole of the photo film is used as the optical path for forming the light projection on the camera itself, the amount of light received by the sensor is large, and it is difficult to minimize the design change of the camera itself. The advantages.

As described above, the present invention is characterized in that it is provided with a light source installed in the internal space of an assembly composed of an upper frame and a lower frame, and a light transmission unit that allows light emitted by the light source to pass through the lower frame. An optical device with a hole projected to the outside, and a writing data plate having a plurality of light-transmitting or light-blocking data portions at approximately equal distances from the center of rotation, and a data indicating wheel having a flange portion, the flange portion The part has a data indication part directly or indirectly corresponding to the data part of the data writing board at approximately equidistant from the center of rotation. The data indicating wheel is located on the outer side of the upper frame and can rotate relative to the assembled body, and the data writing board is located on the lower side. The outer side of the frame allows each data part to selectively face the light-transmitting hole, and the data writing board can also be detached and fixed on the data indicator wheel independently, and the light source and optical device are clamped by the upper frame and the lower frame An assembly of the first clamping structure, and a structure clamping the assembly with the data indicating wheel and the writing data plate. Therefore, there are the following effects.

1. It has good assembly and parts replacement. In particular, without disassembling the assembled body, the writing data board and the data indicating wheel can be replaced, and the assembled body can be reused. Also, because there is no special rotation transmission mechanism, the number of parts can be greatly reduced and it is relatively firm, and the problem of loose transmission will not occur, and the appropriate writing data can be correctly selected.

2. Because there is a data selection mechanism consisting of a ratchet gear and a jumping part, it is possible to manually turn the data indicating wheel and stop it at all equal angles, so that the data part and the light transmission hole are always consistent. Therefore, the written data has no shadow, etc. Although the data is written manually, the data exposure quality can be improved.

3. Since the inner peripheral groove is formed on the data indicating wheel, and the upper frame body is formed with a cylindrical portion fitted with the inner peripheral groove, the supporting length of the bearing is longer than the depth of the inner peripheral groove. Because this helps to suppress the installation gap between the shaft and the shaft hole, and because it can suppress the gap in the data part of the writing data board, the quality of writing can be improved.

4. Moreover, when the meshing part of the ratchet tooth part and the jumping part is near the light transmission hole, the offset of the data part to be written, etc. will have less influence caused by the loose meshing, so that the written data can be suppressed. deformation etc. Here, when an inclined surface is formed on one of the ratchet tooth portion or the jump control portion to make the upper frame body and the data indicating wheel assembled and brought into the meshing state, the ratchet tooth part jump control portion is on the inclined surface due to the assembly operation. The inside is guided to engage, so there is no need for special operations to engage the two.

5. In the case of using two write-in data boards, although it is a rather small structure attached to the non-replaceable film camera, the year, month, day data section can be attached to the two data boards. At this time, the year and month data part can be attached to one writing data board, and the date data part can be attached to the other writing data board, and it is possible to update any year, month and day by only replacing the data board with the year and month data part. data

6. When the first writing data plate and the second writing data plate are arranged in a partially overlapping region, it is possible to prevent writing of transmitted light other than the data portion.

7. Similarly, when the first light transmission hole and the second light transmission hole are separated by a light shielding plate, even if the transmitted light other than the data portion appears, the light shielding plate can be used to shield the light.

8. Furthermore, when a non-data portion is formed on a data plate, it is also suitable to obtain a photo without writing data.

9. When the structure of the mechanical switch device that is provided with the exposure action of the shutter blade of the camera body and closes the light source lighting control circuit is adopted, the data can be written automatically. Moreover, in the data writing device, due to the structure of the timing power supply circuit that supplies power to the light source for a certain period of time due to the closure of the mechanical switchgear, no matter how the moving speed of the shutter is, the data exposure of a certain period of time can usually be completed, and the photographic Every write quality is unbiased. In addition, when a light source power supply battery is mounted next to the data writing device, it is possible to perform a pre-writing test using only the data writing device.

10. As the light source lighting control circuit, there is a manual switch device that generates a lighting command signal to control the lighting of the light source, a detection device that generates a detection signal for detecting the completion of film winding, and stores the completed or unfinished state of film winding according to the detection signal. The memory device, and the timing power supply circuit that supplies power to the light source for a certain period of time from the built-in battery based on the detection signal that occurs when the film is in the complete winding state, and the prevention of prohibiting the power supply to the light source when the film is in the unfinished state In the structure of the repetitive lighting circuit, the data writing operation is not performed unless the manual switch operation is performed. Here, when the data is not being written, it is best not to rotate the data indicator wheel. Furthermore, since data writing is not performed while the film is in an unrolled state, double writing can be prevented.

11. In the case of using a light sensor with a sensory light transmission part facing the lower frame, and a timing power supply circuit that uses the light detection signal sent by the sensor as a turning point to make the built-in battery generate power for the light source for a certain period of time, The structure of the light source control circuit can be simplified.

12. Especially, if a part of the photographic light is used as the optical path leading to the sensor, and the guide hole of the photo film is used on the camera body side to form the projecting optical path, the amount of light received by the sensor is relatively large, and the design change of the camera itself can also be minimized. advantage.

Fig. 1 is a longitudinal sectional view showing a non-replaceable film camera equipped with a data writing device according to a first embodiment of the present invention.

Fig. 2 is an exploded perspective view showing the camera body and the data writing device of the non-replaceable film camera with the front cover removed.

Fig. 3 is an exploded perspective view showing the same data writing device as viewed from the direction of the upper housing.

Fig. 4 is an exploded perspective view showing the same data writing device as viewed from the direction of the lower housing.

Fig. 5 is a plan view showing the same data writing device as seen from the upper housing side.

Fig. 6 is a cross-sectional view showing a state cut along line A-A in Fig. 5 .

Fig. 7 is a cross-sectional view showing a state cut along line B-B in Fig. 5 .

Fig. 8 is a plan view showing two data indicating wheels in the same data writing device.

Fig. 9 is a plan view showing two data writing boards in the same data writing device.

Fig. 10(A) is a plan view showing the meshing relationship between the skip part and the tooth part in the same data writing device, and Fig. 10(B) is a sectional view showing the meshing relationship between the skip part and the tooth part in the same data writing device .

Fig. 11 is a plan view showing a switchgear according to the same embodiment.

Fig. 12 is a cross-sectional view showing a state cut along line C-C in Fig. 11 .

Fig. 13 is a plan view showing the installed state of the same switchgear.

Fig. 14 mentions the electronic circuit diagram of the light source lighting control loop in the same embodiment.

15 is an exploded perspective view showing the camera body, the data writing device and the switch device when the front cover of the non-replaceable film camera with the data writing device according to the second embodiment of the present invention is removed.

Fig. 16 is a plan view showing an assembled state of the same switchgear.

Fig. 17 is a plan view showing the same data writing device seen from its upper casing.

Fig. 18 is a sectional view showing a state in which a switch board is mounted in the same switchgear.

Fig. 19 is an electronic circuit diagram showing a light source lighting control circuit in the same embodiment.

Fig. 20 is a timing chart illustrating the operation of the lighting control circuit for the same light source.

Fig. 21 is an exploded perspective view showing the camera body and the data writing device when the front cover of the non-replaceable film camera with the data writing device according to the third embodiment of the present invention is removed.

Fig. 22 is a plan view showing the state of the same data writing device seen from the upper housing side.

Fig. 23 is a cross-sectional view showing a state cut along line D-D in Fig. 22 .

Fig. 24 is a sectional view showing a switch mechanism for detecting film winding in the same data writing device.

Fig. 25 is a sectional view showing an assembled state of a switch plate in the same switch mechanism.

Fig. 26 is an electronic circuit diagram showing a light source lighting control circuit in the same embodiment.

Fig. 27 is a timing chart for explaining the operation of the same light source lighting control circuit.

Fig. 28 is a longitudinal sectional view showing a non-replaceable film camera equipped with a data writing device according to a fourth embodiment of the present invention.

Fig. 29 is a front view showing the same film non-replaceable camera.

Fig. 30 is an exploded perspective view showing the camera body and the data writing device of the non-replaceable film camera with the front cover removed.

Fig. 31 is a plan view showing the state of the same data writing device seen from the upper housing side.

Fig. 32 is a cross-sectional view showing a state cut along line E-E in Fig. 31 .

Fig. 33 is an electronic circuit diagram showing a light source lighting control circuit in the same embodiment.

Fig. 34 is a timing chart for explaining the operation of the same light source lighting control circuit.

FIG. 35(A) is a plan view showing a modified side of the same embodiment, and FIG. 35(B) is a plan view showing another modification of the same embodiment.

Fig. 36 is a longitudinal sectional view of a conventional camera with a built-in transmission type liquid crystal display type data writing device.

The following are the best embodiments for implementing the present invention.

Example 1

1 is a longitudinal sectional view showing a non-replaceable film camera equipped with a data writing device according to a first embodiment of the present invention, and FIG. 2 shows the camera body and data of the non-replaceable film camera with the front cover removed. An exploded oblique view of the writing device and switching device.

The body of this film-incapable camera 100 has a front cover 10 made of resin, a middle cover 20 made of resin and a rear cover 30 made of resin. lens opening 12 and the like. The middle cover 20 has a light guide tube 21 and the like which limit the imaging optical path, and it makes the light projection of the subject within the determined photographing frame size of the photographic film 2 . The rear cover 30 has a plurality of protrusions 31 , a data transmission hole 32 , a viewing window 33 , etc., which are slidably attached to the photo film and extend along the roll-up direction of the photo film 2 . The light introducing cylinder 21 of the middle cover 20 is overlapped with the light introducing frame 22 in a claw combination manner. In front of the light transmission hole 22a formed in the light introduction frame 22, a shutter blade 23 that jumps up and can rotate back and forth is provided. Furthermore, the lens frame 25 housing the photographic lens 24 is superimposed on the front surface of the shutter blade 23 in the form of claws facing the light introduction frame 22 .

On the other hand, a small (about 3 cm in length and width, about 3 mm in thickness) data writing device 40 is detachably mounted on the front side of the rear cover 30 as will be described later. The data writing device 40, as will be described later, actually sandwiches the necessary components inside a lower frame (lower cover) 50 made of black resin and an upper frame (upper cover) 60 made of black resin. In the assembled structure, there is a flank structure that presses the data indicating wheels 70, 80 and the writing data plates 75, 85 outside the structure. The circuit board 90 protruding from the lower end of the data writing device 40 is connected to the substrate 111 of the switch device 110 provided near the shutter blade 23 by common electric wires 111a, 111a. In addition, the camera 100 that cannot be replaced with film is usually covered by a perforated decorative carton cover (not shown) at the front of the photographic lens 24 and the viewfinder hole 11 and necessary positions.

As shown in FIG. 2 , a rectangular recessed device receiving portion 34 is formed on the rear cover 30 of the camera body, and positioning pins 35 a, 35 b are erected at a pair of opposite corners of the device receiving portion 34 . In addition, a pair of engagement claws 36a, 36b are provided on the left and right portions of the device housing portion 34 . Further, a groove portion 37 for drawing out the lead wires 111a, 111a is formed at the lower end portion of the device housing portion 34. As shown in FIG.

Fig. 3 is an exploded perspective view showing the state of the data writing device related to the present embodiment seen from its upper frame, Fig. 4 is an exploded perspective view showing the state of the same data writing device seen from its lower frame, Fig. 5 It is a plan view showing the state seen from the upper housing side of the same data writing device. FIG. 6 is a sectional view showing a state cut along line A-A in FIG. 5 , and FIG. 7 is a sectional view showing a state cut along line B-B in FIG. 5 , Fig. 8 is a plan view showing two data indicating wheels in the same data writing device, and Fig. 9 is a plan view showing two writing data pads in the same data writing device.

The data writing device 40 is formed by combining the upper frame body 50 and the upper frame body 60 with claws, and the data indication wheels 70, 80 and the writing data plates 75, 85 are respectively arranged on both sides of the assembled body. And install and fix with the insert pin 78,88 of band flange. As shown in FIG. 4 , positioning pins 61 a and 61 b are erected on the inner surface side of the thin portion of the upper frame body 60 . In addition, positioning pin holes 92a, 92b are formed in the circuit board 90 on which the light emitting diode 91 as a light source is mounted. And the circuit board 90 has a protruding part 93, and a positioning pin hole 92b is formed on the protruding part 93. A resistor 94 for limiting the power supply of the light emitting diode 91 is provided between the lead end 95 a of the circuit board 90 and the light emitting diode 91 . When the circuit board 90 is assembled on the upper frame body 60 by aligning the positioning pin holes 92a, 92b with the pins 61a, 61b at the mating position, only the extended length of the protruding part 93 can align the thickness direction of the circuit board. Therefore, with good assembly performance, the circuit board 90 should not be moved when the soldering of the wires 111a, 111b at the outlets 95a, 95b on the outside of the circuit board 90 is not ideal, so that the light-emitting diodes can be prevented. The set offset of the exit face. In addition, for the electrical connection between the data writing device 40 and the switch device 110, instead of the wire 111a, a printed circuit board or the like may be used.

As shown in Fig. 4 and Fig. 6, a reflector storage room 62 is formed on the inner surface side of the upper frame 60 near the center, and a reflector composed of vapor-deposited aluminum on a glass plate is installed on its inclined surface at an inclination angle of about 45°. Mirror 96. In the region from the light source housing portion 63 on the inner surface side of the upper housing 60 to the mirror housing chamber 62 , a diffuse reflection prevention structure is formed together with the configuration of the lower housing 50 described below. The anti-diffuse reflection structure is a plurality of slit structures 64 formed on the inner surface of the non-reflective grinding process for the attenuation of reflected light. In the upper frame body 60, the first slit structure is a slit defining protrusion 64aa formed on the bottom surface close to the light source housing portion 63 with a triangular cross section and a slit with a triangular cross section perpendicular to the left and right sides thereof. Limit the composition of 64ab and 64ac. The second slit structure is located in the direction in which the light advances compared to the first slit structure, and is formed of a slit-defining protrusion 64ba having a triangular cross-section formed on the bottom surface on the inner side of the housing 60 . The third slit structure is located further in the direction of light advance than the second slit structure, and is a cross section perpendicular to the left and right sides of the slit defining protrusion 64ca formed on the inner bottom surface of the upper frame 60 and having a triangular cross section. Triangular slits define protrusions 64cb, 64cc. The fourth slit structure is located in front of the light traveling direction relative to the third slit structure, and is formed by a protrusion 64da formed on the bottom surface of the inner surface side of the upper frame body 60 and having a triangular cross-section to define the slit. The fifth slit structure is located further forward in the direction of light propagation than the fourth slit structure, and is formed by the slit-limiting protrusions 64ea formed on the bottom surface of the inner surface side of the upper frame body 60 and having a triangular cross-section at right angles to its left and right sides. The slit-limiting protrusions 64eb and 64ec having a triangular cross section are formed.

At a substantially symmetrical position sandwiching the reflector storage chamber 62 in the middle, a cylindrical shape that can be divided into shaft holes 65a, 66a that can rotate the shaft portions 71, 81 of the data indicator wheels 70, 80 can be rotated back and forth. Bearing parts 65, 66. In addition, at the corners of the pair of thick walls of the upper frame body 60, positioning pins 67a, 67b for determining the assembly position of the lower frame body 50 are erected as follows. In addition, coupling holes 67 c that engage with coupling claws of the lower frame body 50 are formed at three places in the thick portion of the upper frame body 60 .

On the other hand, as shown in FIG. 3 , circumferential grooves 65 b and 66 b are formed around the cylindrical bearings 65 b and 66 on the surface of the upper frame 60 . Through-holes 65c, 66c are provided on the opposite inner sides of the two circumferential grooves 65b, 66b, and jumpers 65d, 66d protruding from the side walls of each through-hole 65c, 66c and integrated with the side walls. The bases of the jumping parts 65d and 66d are elastic, and the respective ends are provided with mountain-shaped hooks 65e and 66e facing the bearings 65 and 66 . In addition, data selection instruction mark portions 68 a and 68 b are formed on the thick wall on the short side of the upper housing 60 .

As shown in FIG. 3 , the lower frame body 50 has circular openings 51, 52 that can be fitted with the cylindrical bearing portions 65, 66 of the upper frame body 60 and a region sandwiched between the two circular openings 51, 52. The data light formed in the hole passes through the holes 53a, 53b. Furthermore, the data light transmission lights 53a and 53b are separated by the light-shielding partition 53c. As described later, the data light transmission hole 53a makes the data light of the year and month pass through, and the date data light passes through another data light transmission hole 53b. In relation, it is longer than the lateral dimension of the data light transmission hole 53b. Ribs 51a, 52a that just represent the numeral "5" are formed on the outer peripheries of the two data light transmission holes 53a, 53b. These two edges 51a, 52a, in addition to acting as stiffeners for the device, also have the function of preventing stray light from the writing optical system. 3 and 6, the slit defining protrusions 55a, 55b, 55c constituting a part of the plurality of slit structures 64 are formed in parallel with the data light transmission holes 53a, 53b. Three coupling holes 67 c are formed in the thick portion of the upper frame body 60 , but the coupling claws 54 coupled to them are erected on the inner surface of the lower frame body 50 . In addition, at the four corners of the lower housing 50, positioning pin holes 55 for fitting the positioning pins 67a, 67b of the upper housing 60 and the positioning pins 35a, 35b of the camera body are formed. In addition, ear-shaped coupling portions 56a, 56b are formed on the outside of the short side of the lower frame body 50, and these engage with the coupling claw portions 36a, 36b of the camera body. In addition, on the surface of the lower housing 50 , thin-walled data plate storage portions 51 b and 52 b are defined around the circular openings 51 and 52 . As will be described later, since the pair of write data boards 75 and 85 are different in size, the corresponding data board storage portion 52b is larger than the other data board storage portion 51b.

The data indicator wheel 70 has a shaft 71 that can be fitted into the shaft hole 65a, a disc-shaped flange 72 integrally formed with one end thereof, and a toothed ring portion 73 integrally formed inside the flange portion 72. (Ratchet part). Plain knurling is formed on the peripheral surface of the flange portion 72 . In addition, near the edge of the surface of the flange portion 72, as shown in FIG. 8, a day display portion 72a representing an odd number among numbers "1" to "31" is formed by screen printing or mimeograph, and is sandwiched between Adjacent day indications 72a, 72b between dot indications 72a and "dots" are indicated. These dot display parts 72b represent even numbers between numbers "1" to "31", which is a convenient way to write date data in the limited space of the flange part 72. Therefore, a date display portion having a large number of numerals can be attached to the flange portion 71 having a small area, and an error in overlapping data can be prevented due to improved visibility. On the front end surface of the shaft 71 of the data indicator wheel 70, a pin hole 71a for press-fitting the pin portion 78a of the insert pin 78 with a flange and an arc groove 71b, 71b for wrapping the hole 71a are formed. . In addition, on the front end surface of the shaft portion 71 , positioning pins 71 c , 71 c that are aligned with the positioning pin holes 75 a , 75 a of the writing data board 75 are erected. The tooth top diameter of the toothed annular portion 73 is smaller than the diameter of the flange portion 72 . An inner peripheral groove 73 a is provided between the toothed ring portion 73 and the shaft portion 71 . The toothed annular portion 73 is fitted into the inner peripheral groove 65b of the upper frame body 60, and its toothed portion 73b is engaged with the mountain-shaped hook portion 65e of the skipping portion 65d.

Likewise, the data indicating wheel 80 has a shaft portion 81 capable of fitting into the shaft hole 66a, and a disc-shaped flange portion 82 integrally formed at its front end, and a belt portion integrally formed inside the flange portion 82. Tooth ring part (ratchet part) 83 . Plain knurling is formed on the peripheral surface of the flange portion 82 . For example, the last two digits of "92" in 1992, the last two digits of 1993 "93" and the last two digits of 1994 are formed on the inner peripheral surface of the flange part 82 by screen printing or mimeograph method. The year display part 82a of "94", and the odd-numbered month display part 82b in the numbers "1" to "12" on the periphery of the year display part 82a representing the numeral "92", and the year display part 82b representing the number "93" On the periphery of the part 82a, the odd-numbered month display part 82b in numbers "1" to "12" and the numbers "1", "3" and "5" are shown on the periphery of the year display part 82a showing the number "94". The month indication part 82b, and the dot indication part 82c which expresses a dot sandwiched between the adjacent month indications 82b, 82b. The dot representation part 82c implies an even numbered month, which is a convenient way to write year and month data in the limited base of the flange part 82. Therefore, large numbers can be written on the flange portion 82 having a small area, and the visibility can be improved to prevent data overlapping errors. In addition, a non-data representation range 82d of at least one interval is provided between the month representation "1" to which the numeral "92" belongs and the dot representation to which the numeral "94" belongs.

On the front end surface of the shaft portion 81 of the data indicator wheel 80, a pin hole 81a is formed so that the pin portion 88a of the plug pin 88 with a flange has a press-fit interference, and an arc groove 81b that wraps around the pin hole 81a, 81b. Positioning pins 81 c , 81 c that fit into the positioning pin holes 85 a , 85 a of the writing data board 85 are vertically provided on the front end surface of the shaft portion 81 . The tooth tip diameter of the toothed annular portion 83 is smaller than the diameter of the flange portion 82 . An inner peripheral groove 83 a is provided between the toothed ring portion 83 and the shaft 81 . The toothed ring 83 is fitted into the circumferential groove 66b of the upper frame body 60, and its toothed portion 83b engages with the chevron-shaped hook 66e of the skipping portion 66d.

Like this, a pair of data indicating wheel 70,80 just can represent the year month day data between the 30 months between January 1, 1992 to June 30, 1994 for example in the Gregorian calendar. The 30-month data are presented for the following reasons. The film non-replaceable type camera which cannot be replaced by the user himself when used up is ordered to be about two years. Even considering the storage period of the camera whose film cannot be replaced by the data writing device, 30 months of data writing is enough, and the long-term date data with so-called 5 years or 10 years is unnecessary. Furthermore, a bent portion 112d is formed on the edge of the data finger portion 112a, and is inserted into the inner wall of the fixing hole 111c formed in the substrate 111. As shown in FIG. At the front end of the connection piece 112b, there is a curved contacted portion 112e that contacts the outer edge of the shutter blade 23 as will be described later. Another switch plate 113 has a plate-like portion 113a glued to the base plate 111 and a connecting piece 113b protruding from one end thereof. Two positioning pin holes 113c are formed in the plate portion 113a, and the two positioning pins 111e of the base plate 111 are inserted into the positioning pin holes 113c to fix the switch plate 113 to the base plate 111. The lead wire 111a is connected to one end of the plate-like portion 113a of the switch plate 113 by soldering. There is a bent portion 114a in the negative terminal plate 114, which is inserted into an insertion hole 111f formed in the base plate. The other end of the negative terminal plate 114 is soldered to the lead wire 111a. The negative electrode 116 a side of the disc-shaped battery 116 is pressed against the negative electrode terminal plate 114 . In addition, the positive electrode 116 b side of the battery 116 is pressed by the battery pressing plate 115 . The two ends of the battery pressing plate 115 form hooks 115a that engage with the protrusions 111g formed on the base plate. The battery pressing plate 115 is equipped with a spring 115b near the center, and uses its elastic force to press the battery 116 tightly. At one end of the battery pressing plate 115 is formed a bifilar spring 115c, which is inserted into the fixing hole 111c of the base plate. One leg of the bifilar spring 115c is in elastic contact with the bent portion 111d of the switch plate 112, and the other leg is in elastic contact with the inner wall of the fixing hole 111c. In this bifilar spring 115c, the battery pressure plate 115 serving as the positive electrode is electrically connected to the switch plate 112 . The assembly method of the switch device 110 is as follows. First, after the positioning pin holes 112c, 113c of the opening plates 112, 113 are overlapped with the pins 111c, 111e on the base plate 111 and the two are assembled, the curved portion of the negative terminal plate 114 is 114a is inserted into the hole 111f of the substrate. Then, the battery 116 is mounted on the negative terminal plate 114, and the double-strand spring 115c of the battery pressing plate 115 is inserted into the fixing hole 111d, and the hook 115a is fastened to the protrusion 112g.

Fig. 14 is a circuit diagram showing a light bulb lighting control circuit of the data writing device in this embodiment. On the switch device mounted on the side of the camera body, as mentioned above, the dot display part 72b on the battery indicator wheel 70 that indicates between "31" and "1" overlaps with the mark 68a, so that the data indicator wheel 80 The non-data representation part 82d in the middle overlaps with the mark 68b, and can be used to set the state of not forming data writing. When the data writing device is shipped from the factory, since it is set in such a non-data writing state in advance, it is possible to prevent the user from writing inappropriate data inadvertently at the time of purchase.

The writing data pads 75 and 85 are formed, for example, by recording predetermined data on a photographic film base and punching it into a circle. The writing data plate 75 has a light-transmitting (transparent) date data portion 75b formed in the shape of numerals "1" to "31" around it, and the rest forms an opaque portion. There is at least one space between the data part of the number "31" and the data part of the number "1", an opaque non-data area 75c. A central hole 75d penetrating through the pin portion 78 of the flanged pin 78 is formed at the center of the write data plate 75, and two positioning pin holes 75a are also formed as described above. The writing data plate 85 is a circular plate larger than the writing data plate 75, and there are numbers "92 1" ~ "92 12", numbers "93 1" ~ "93 12", and numbers "94 1" around it. ~The translucent (transparent) year and month data part 85b made in the shape of "94 6", and the rest of the area is an opaque part. Because the year and month data portion 85b of the "year" and "month" data is formed on one writing data board 85, two data boards can be used to represent three sets of data of the year, month and day, thereby reducing the number of components and enabling Miniaturize and reduce costs. In addition, when selecting three groups of data, only need to turn the two indicator wheels, which can make the operation easy. An opaque non-data area 85c with at least one gap is left between the data part of the number "92 1" and the data part of the number "94 6". A center hole 85b penetrating through the pin portion 88 of the flanged plug 88 is formed at the center of the write data plate 85, and two positioning pin holes 85a are also formed as described above. Such writing data plates 75, 85 with light-transmitting parts and opaque parts, as mentioned above, can be obtained by photolithography, but are not limited to this, and can also be printed with transparent plastic film, printing paper, etc. The upper shafts 65e, 66e mesh with the toothed portions 73b, 83b. Therefore, it is only necessary to insert the shafts 71, 81 into the shaft holes 65a, 66a. By inserting in this way, the positioning pins 71 c , 81 c of the shafts 71 , 81 protrude into the spaces of the data plate storage portions 51 , 52 . Next, the pin holes 75a, 85a of the data boards 75, 85 are fitted into the protruding positioning pins 71c, 81c. In this way, the indication data on the data indication wheel 70,80 corresponds to the data written on the data plate 75,85. Then, as the pin portion 78a of the plug 78 is pressed and fixed to the center hole 75d and the pin hole 71b, the pin portion 88a of the plug 88 is pressed and fixed to the center hole 85d and the pin hole 81b.

Like this, the assembling method of data write-in device 40 is that optical components are put into the upper frame body, outside the assembled body of upper frame body 60 and lower frame body 50, along with the data indicating wheel 70,80 such as rivet shape Load it from the side of the upper frame body 50, and at the same time assemble the data boards 75, 85 from the side of the lower frame body 50, and then press them in with the bolts 78, 88. Therefore, the assembly work efficiency is high. When replacing the data board with 30 months of year and month data, the data board 85 can be easily taken out by pulling out the latch 88 .

The reason why such good assembly and replaceability is arranged depends on the structure of the data indication wheel 70,80. That is to say, the data indication wheel 70,80 not only has the function of data representation, but also because there are toothed ring portions 73,83 that determine the rotational position on its flange portion inner surface, and at the same time, on the shaft 71,81 The front end also has positioning pins 71c, 81c that determine the position of the data boards 75, 85. Here, as shown in FIG. 7 , the tooth tip diameters of the toothed ring portions 73 , 83 are smaller than the diameters of the flange portions 72 , 82 . Of course, this makes it possible to insert the indicator wheel 70, 80 so that the diameter of the flange portion 72, 82 is as close as possible to the diameter of the ring portion 73c, 83c than the diameter of the shaft 71, 81 . Between the toothed part 73a, 83a and the mountain-shaped hook 65e, 66e of the jumping part 65d, 66d, there will inevitably be an engagement gap. The digital part 75b, 85b of the digital part 75b, 85b increases and becomes larger, and the digital deformation of the written data makes it easier for defects and blurring to occur. However, the current data is obtained by duplicating on photographic paper using diffusion copying technology. Likewise, it can also be formed by etching or punching a metal plate or the like. In addition, the scanned data can be produced by using methods such as monochromatic scanning technology of laser printing.

The flanged plug 78 is composed of a pin portion 78a and a flange portion 78b connected to one end thereof, and a protruding front end formed on the outer edge of the flange portion 78b can avoid the occurrence of the positioning pin 71c passing through the pin hole 75a. The notch 78c. And the plug pin 85 with flange is made of pin portion 88a and the flange portion 88b that links with its one end, at the outer edge shape gap portion 88c of this flange portion 88b, to avoid being passed through pin hole 85a by locating pin 81c resulting in a protruding front end.

Regarding the assembling method of the data writing device 40 constituted in this way, at first, the mirror 96 and the circuit board 90 are packed into the upper frame body 60, and then the positioning pin holes 55, 55 of the lower frame body 50 are positioned and stacked on the pins. 67a, 67a, fasten and combine the three coupling claws 54 with the coupling hole 67, so that the upper frame body 60 and the lower frame body 50 are integrated. Needless to say, as a result of this, the fixing of the reflector 96 and the circuit board 90 is completed, and the bearing portions 65 , 66 are also fitted into the openings 51 , 52 . Therefore, since the positioning pins 67a, 67b and the positioning bladder holes 55, 55 are provided, the positioning combination operation is easy to perform. In addition, because the three joint claws 54 are arranged on the vertices of the device 40 and the equilateral triangle, the joint precision of the thin plate-shaped upper frame body 60 and the lower frame body 60 is excellent, effectively preventing the occurrence of bending and deflection, etc. without messing up the arrangement of the internal optics. Secondly, for the assembly of the upper frame body 60 and the lower frame body 50, the shafts 71, 81 of the data indicator wheels 70, 80 are inserted into the shaft holes 65a, 66a of its upper frame body 60, on the shaft 71, 81 During the insertion process, the tooth-shaped portions 73b, 83b of the toothed ring portions 73, 834 on the data indicator wheels 70, 80 properly contact the mountain-shaped hooks 65e, 66e of the skipping parts 65d, 66d, but the Since the inclined surfaces 65f, 66f shown in Figure 10(B) are formed on the contacted parts of the shape hooks 65e, 66e, the jumping parts 65d, 66d elastically retreat from the flange position in Figure 10(A) to the double point Scribing position, mountain-shaped hook In this example, because the tooth-shaped parts 73a, 83a are located close to the flange parts 72, 82, the increase of the meshing gap can be suppressed, which is beneficial to the improvement of data exposure quality. Further, in the indicator wheels 70, 80, circumferential grooves 65b, 66b are formed on the inner peripheries of the toothed ring portions 73, 83, and bearings 65, 66 are fitted therein. Therefore, the axial support length of the bearing becomes longer with the depth of the circumferential grooves 65b, 66b, compared with the case where the circumferential grooves 65b, 66b are not provided. The length of the bearings 65, 66 in this example is about 4mm, and since the depth of the circumferential grooves 65b, 66b is about 1mm, the circumferential grooves increase the supporting length by about 33%. The increase of this support length has the effect of suppressing the additional clearance and eccentric rotation of the indicator wheels 70, 80 themselves, thereby also suppressing the deformation, chipping and blurring of the numbers written on the surface. In addition, in this example, as shown in FIG. 5 , since the skipping parts 65d and 66d are arranged in the vicinity of the data light transmission holes 53a and 53b, that is, they are arranged on the inner side of the adjacent indicator wheels 70 and 80, Therefore, gaps and deformations at the portions of the data plates 75, 85 facing the data light transmission holes 53a, 53b can also be suppressed. If, if the jumper setting part is at the corner of the upper frame body 60, the meshing gap between the jumper part and the toothed part will increase, and the data plate part facing the data light transmission hole will be deformed and deformed. Skew etc.

Fig. 11 is a plan view of the switchgear in this example, Fig. 12 is a sectional view showing a cutaway state along line C-C in Fig. 11, and Fig. 13 is a plan view showing an installation pattern of the same switchgear. The switch device 110 is composed of a base plate 111 , switch plates 112 , 113 , a negative electrode connection 114 and a battery pressing plate 115 . The base plate 111 is a planar L-shaped insulating plate and has two positioning pin holes 111b. Since the position of the positioning pin hole 111b coincides with the pin 20a formed on the middle cover 20, the switch device 111 is mounted on the camera body. The switch plate 112 has a plate-shaped portion 112a glued on the base plate 111 and a connecting piece 112b extending from one end thereof. Two positioning pin holes 112c are formed in the plate portion 112a, and the two positioning pins 111c of the base plate 111 are positioned and inserted into the pin holes 112c so that the switch plate 112 is fixed to the base plate 111. A plate shape 116 and switch plates 112, 113 as switches connected in series thereto. On the circuit board 90 on the writing device 40 side, as described above, a resistor 94 and a light emitting diode connected in series thereto are mounted. The switch plate 113 is connected to the light emitting diode 91 by a wire 111b, and the negative pole of the battery 116 is connected to the resistor 94 by a wire 111a. In addition, although the lead wires 111a and 111b are used in this example, a printed circuit board or the like may be used instead.

As shown in FIG. 13 , the camera of the non-replaceable film type usually completes the roll-up action by turning the roll-up knob 16 of the film by hand and puts it in a shooting ready state. Here, when the shutter lever 17 does not move, the shutter blade 23 covers the light transmission hole 22a between the photographic lens 24 and the photographic film. Now, if the shutter frame lever 17 is pushed down, the light-transmitting hole 22a is opened because the shutter blade 23 is rotated around its shaft 23a from the position of the solid line in FIG. exposure. Due to the rotation of the shutter blade 23, its edge portion presses down the curved connected portion 112e of the switch plate 112 to bend. Therefore, the contact piece 112b of the switch plate 112 is contacted with the contact piece 113b of the switch plate 113, so the switch is closed, and the battery 116 supplies power to the light-emitting diode 91 to light the light-emitting diode 91 for a certain period of time. Conversely, when the shutter lever 17 is released, the shutter blade 23 and the shutter lever 17 return to their original state due to the elastic force of the return spring 19 . Here, the structure is such that when the shutter blade 23 rotates, the movable contact piece 112b of the switch plate 112 that moves therewith comes into contact with the contact piece 113b of the switch plate 113 . That is to say, the switch boards 112 and 113 can also serve as a detection device for detecting the lighting time of the light-emitting diode and a switch for supplying power thereto. Thereby, do not need to change the design of its mechanism system to the existing film can not replace type camera body, as long as load onto switch gear and just become.

If the light emitting diode 91 is turned on, the light emitted by it passes through the multiple slit structure 64 to prevent diffuse reflection and reaches the reflector 96, where it is reflected in the thickness direction of the device. Then, the reflected light passes through the data light transmission 51a, 51b, and illuminates the data portions 75b, 85b of the data plates 75, 85 facing the light transmission holes. Because the data portion 75b, 85b has light transmission, the shape of the data 75b, 85b digit group can be obtained by its illuminating light, and the projection light makes the inside of the photo film 2 expose the data. Thus, writing of data on the photo film 2 is completed. Here, since the data plates 75 and 85 partially overlap each other, it is possible to block the passing light near the data portions 75b and 85b and near the periphery of the data plates 75 and 85 . In addition, the data light transmission holes 53a, 53b are separated by the light-shielding baffle 53c, which blocks the passing light near the data plates 75, 85 near the data 75b, 85b, and plays a role of strengthening light-shielding. Thus, with respect to the surface of the film 2, as shown in FIG. 7, the light transmission ranges _D1 and _D2 are defined. In the present embodiment, since the circumferential portion of the year and month data plate 75 with a large diameter is placed on the outside, and the circumferential portion of the date data plate 85 with a small diameter is placed inside, therefore, when the year and month data plate 75 is replaced, it is possible to Damage or deformation of the data portion 85b due to undesired curling of the periphery of the date plate 85 is prevented.

Example 2

Next, a second embodiment of the present invention will be described. First, in summary, this embodiment has the following features. In the first embodiment, the battery 116 is mounted on the substrate 111 on the side of the switch device 110 , but in this embodiment, the battery 116 is mounted on the side of the data writing device 140 . Similarly, a light source lighting control circuit is installed inside the data writing device 140 to keep the lighting time constant for each data writing.

Fig. 15 is an exploded perspective view showing the camera body, the data writing device and the switch device when the front cover of the non-replaceable film camera equipped with the data writing device according to the second embodiment of the present invention is removed, and Fig. 16 is an exploded perspective view showing Fig. 17 is a plan view showing the state of the same data writing device viewed from the upper housing side. In addition, in FIGS. 15 to 17, the same parts as those shown in the first embodiment are assigned the same symbols, and their descriptions are omitted.

The switch device 120 is composed of a substrate 121 and switch plates 122 and 123 . The base plate 121 is a substantially L-shaped planar insulating plate with two positioning pin holes 111b. The position of the pin hole 111b coincides with the pin 20a formed in the middle cover 20 so that the switch device 120 is assembled on the camera body. The switch plate 122 has a plate portion 122a bonded to the base plate 121 and a contact piece 122b extending from one end thereof. Two positioning pin holes 122c are formed on the plate portion 112a, and the two positioning pins 121c of the base plate 121 are positioned and inserted into the pin holes 122 to fix the switch plate 122 to the base plate 121. One end of the plate-like portion 122a is connected to the lead wire 111a by soldering. The front end of the contact piece 122b has a curved contacted portion 122e that contacts the edge of the shutter blade 23 . Another switch plate 123 has a plate-like portion 123a bonded to the base plate 121 and a movable contact piece 123b extending from one end thereof. Two pin holes 123 c are formed on the plate portion 113 a , and the two positioning pins 121 e of the base plate 121 are positioned and inserted into these pin holes 123 c to fix the switch plate 123 to the base plate 121 . The lead wire 111a is connected to one end of the plate-like portion 123a of the switch plate 123 by soldering. Thus, in the present embodiment, the switch device 120 has two switch plates 122, 123, the same as in Embodiment 1, the contact piece 122b, 123b is switched as the shutter blade rotates back and forth, but no battery is installed here.

On the one hand, in the structure of the data writing device 140, the data selection mechanisms of the data indicating wheels 70, 80 and the data plates 75, 85, etc. have the same structure as that of the first embodiment, but on the other hand, the circuit board 190 The loading structure of the loading member and the battery 116 is different from that of the first embodiment. The circuit board 190 is sandwiched between the upper frame 160 and the lower frame 150 . A battery 116, a tungsten bulb 191 as a light source, an integrated circuit 192, a capacitor 193, a resistor 194, and the like are mounted on the circuit board 190. Copper foil electrodes and wiring patterns are formed at necessary locations on the surface of the circuit board 190 . A bulb 191, a capacitor 193, and a resistor 194 are fixed to these electrode portions by soldering. The integrated circuits 192 are connected to the circuit board 190 by cable bonding when they are paired, and are connected by soldering when the ICs are assembled. Compared with light-emitting diodes, tungsten lamp 191 has good exposure quality because it emits light in the full wavelength range, but its brightness fluctuates greatly. Therefore, the resistor 194 that determines the length of lighting time should be graded according to its impedance value , install a resistor corresponding to the level of brightness of the bulb 191, and adjust the lighting time to ensure that the amount of light written is constant. Positioning pin holes 190a, 190b are formed on the circuit board 190 so as to be coupled to the positioning pins 160e, 160f of the upper frame 160 at appropriate positions. The battery 116 is held by the flange 116a formed on the upper frame 160 around the periphery of the battery 116, the plate spring 130a of the negative terminal plate 130, and the lower frame 150. The negative terminal plate 130, as shown in FIG. 18, has a positioning pin hole 130b matching the position of the positioning pin 160a formed on the upper frame body 160, and hook portions 130c are formed on both sides of the positioning pin hole 130b. The hook portion 130c fits on the protrusion 160a of the upper frame 160 . The negative electrode terminal plate 130 also has a plate-like spring portion 130d elastically contacting the negative electrode of the circuit board 190 . On the one hand, as shown in FIG. 18 , the positive terminal plate 135 has a positioning pin hole 135a that matches the positioning pin 160c formed on the upper frame 160 , and hooks 135b are formed on both sides of the positioning pin hole 135c. The hook 135b is engaged with the protrusion 160d of the upper frame 160 . The positive terminal plate 135 has a plate spring 135c on one side that is in close contact with the side surface of the battery 116 and is in elastic contact with it, and has a plate spring 135d that is in close contact with the positive electrode of the circuit board 190 and is in elastic contact with it. In this way, because the battery 116 is embedded in the data writing device 140 side, the structure of the switch device 120 side is simple, and the space on the camera body side can be saved. When the data writing device 140 is used, a large number of design changes are not made to the camera body. can. In addition, the battery 116 is installed on the side of the data writing device 140. As will be described later, it is possible to perform a data writing test only by using the data writing device 140 alone.

Fig. 19 is a circuit diagram showing the configuration of a light source lighting control circuit of the data writing device according to the present embodiment. This circuit is formed by the contact piece 122b of the switch device 120 and the shutter switch SW formed with the contact piece 123b, and the integrated circuit 192 on the side of the data writing device 190, and the resistor 194 and the capacitor 193 externally connected to the integrated circuit, and the tungsten wire Light 191, and battery 116 constitute. The integrated circuit 192 has a monostable multivibrator 192a, an analog switch SW ₁ and a drop resistor R ₁ . The monostable multivibrator 192a has inverters INV ₁ to INV ₃ , a capacitor C ₁ and a drop resistor R ₂ .

Now, when the analog switch SW is disconnected (OFF), point A is at low level (Vss) because point A has a voltage drop across resistor _R1 as shown in Figure ₂₀ , and the The input is stepped down across resistor _R2 so that the output E of inverter _INV3 is high (V ₀₀ ). Thus, the input B of the inverter INV ₁ is high, the output D thereof is low, and the output of the inverter INV ₃ is high. As a result, the external capacitor 193 is charged and the internal capacitor _C1 is discharged. Then, the shutter blade 23 rotates. If the shutter switch SW is closed (ON) at time _t0 , because the input A of the analog switch SW ₁ becomes high level, the analog switch SW ₁ is turned on, and the input of the inverter INV ₁ B is still at a high level, the two poles of the capacitor 193 are turned on and its charged charge is discharged. If at time t ₁ , the shutter blade 23 is reset and the shutter switch SW is turned off (OFF). As a result, input A returns low and analog switch SW ₁ opens. Thus, since input A goes low, input B of inverter INV ₁ goes low because capacitor 193 has no charge and the potential difference between the two electrodes is zero. As a result, the output D of the inverter INV ₁ becomes a high potential, and the potential difference between the two ends of the electrodes is zero because the capacitor C ₁ has no charge, and the input of the inverter INV ₂ also becomes a high potential, so its Output E becomes low potential. Then, the output F of the inverter INV ₃ becomes a low potential, and the tungsten lamp 191 is turned on. However, since the capacitor _C1 is slowly charged, the input potential of the inverter _INV2 also drops, that is, its output E reverses to a high potential at time _t3 . The time _T1 to reach this reversal depends on the time constants of capacitor _C1 and resistor _R1 . Furthermore, since the capacitor _C1 and the resistor R are formed in a semiconductor integrated circuit, their time constants are relatively small. When the output E of the inverter INV ₂ is at a high potential, the external capacitor 193 starts charging. During this charging process, as shown in Figure 20, the input B of the inverter INV ₁ rises exponentially, but if its input B reaches the threshold voltage of the inverter INV ₂ (typically V ₀₀ /2), at time The output D at _t4 is reversed from high potential to low potential. The time T ₂ to reach the reversal depends on the time constants of the resistor 194 and the capacitor 193 . As a result, since the output F of the inverter INV ₂ becomes a high potential, the tungsten filament lamp 191 is turned off. Therefore, the lighting time of the tungsten filament lamp 191 is the low-level time T (=T ₁ +T ₂ ) of the output F, and even if there is some deviation during the ON period of the shutter switch SW, the lighting time can be kept constant. . In particular, when the shutter switch is closed (ON), the capacitor 193 is rapidly and instantaneously discharged by the analog switch SW _1. By pressing the shutter lever 17, the time for the shutter switch SW linked to this to be closed (ON) is (t ₁ -t ₀ ) Even if it is very short, the capacitor 193 can be set in the state of no charge, so it is possible to reduce the voltage of the input B to the low potential Vss, so that the lighting time does not vary.

Example 3

Next, a third embodiment of the present invention will be described. As an outline of this embodiment, the device of this embodiment is characterized in that it does not include a switch device, and has a light bulb lighting control system and a double lighting prevention circuit for performing data writing by manual operation.

Fig. 21 is an exploded perspective view showing the camera body and the data writing device when the cover of the non-replaceable film camera equipped with the data writing device according to the third embodiment of the present invention is removed; body to see a plan view of the state of the same data writing device. In addition, in FIGS. 21 and 22, the same components as those shown in the first embodiment are given the same reference numerals, and their descriptions are omitted.

As shown in FIG. 21 , a device housing portion 34 of a concave portion is formed on the camera body rear cover 30 . The device housing portion 34 is not formed with grooves for leading out wires as in the first and second embodiments. This is because there is no switching device in this embodiment. In this device housing portion 34, a portion different from the first and second embodiments is the formation of an insertion hole 38 for a plate spring to be described later. Here, in the data writing device 240, the internal optical system, the upper housing 260, and the lower housing 250 have substantially the same configuration as those of the first and second embodiments. The lower side of the upper frame 260 protrudes from the lower frame 250, and a V-shaped plate spring 296b of a switch device 296 for film winding detection described later is provided inside the protruding portion 250a. The data writing device 240 is embedded and fixed in the device housing portion 34 .

In the internal structure of the data writing device 240, the data selection mechanisms of the data indicating wheels 70, 80 and the data plates 75, 85, etc. have the same structure as that of the first embodiment, but the components mounted on the circuit board 290 and the folder of the battery 116 The holding structure and the like are different from the first embodiment. The circuit board 290 is sandwiched between the upper frame 260 and the lower frame 250 . On this circuit board 290 are mounted a battery 116, a tungsten lamp 291 as a light source, an integrated circuit 292, a capacitor 293, a resistor 294, and the like. Copper foil electrodes and circuit wiring are formed at necessary locations on the surface of circuit board 290 . A bulb 291, a capacitor 293, and a resistor 294 are fixed to these electrode portions with solder. The integrated circuits 292 are connected to the circuit board 290 by cable bonding when paired, and connected by soldering when the ICs are assembled. Compared with light-emitting diodes, tungsten filament lamp 291 has good exposure quality because it emits light in the full wavelength range, but its brightness deviation is large, so the resistance value of resistor 294 that determines the length of lighting time should be graded, so it should be assembled with the lamp. 291 resistors with a level corresponding to the brightness are used to adjust the lighting time to keep the amount of writing light constant. Positioning pin holes 290a, 290b are formed on the circuit board 290 so as to be combined with the pins 260e, 260f of the upper frame 260 at appropriate positions.

On the upper housing 260 of the data writing device 240, as shown in FIGS. 22 and 23, a push button switch 295 for lighting a bulb is installed. The contact point 295a of this push button switch 295 controls the circuit of the bulb lighting system described later on the circuit board 296 . Inside the secondary output portion 250a of the upper frame 260, as shown in FIGS. 22 and 24, a switch 296 for film winding detection composed of two plate springs 296a and 296b is installed. The front end of the plate spring 296 a is always in contact with the circuit wiring of the circuit board 296 . Another plate spring 296b has a V-shaped bent portion 296c as shown in FIG. in the release hole 20a. As a result, during the winding process of the photo film 2, since the photo film 2 moves in the direction of the arrow in FIG. Due to the vertical movement of the V-shaped bent portion 296c, the front end portion 296d is in repeated contact/non-contact with the circuit wiring.

The battery 116 is clamped by the lower frame 250 by the flange 116 a formed around the periphery of the battery 116 on the upper frame 260 and the plate spring 230 a of the negative terminal plate 230 . The negative terminal plate 230, as shown in FIG. 25, has a positioning pin hole 230b matching the position of the positioning pin 260a formed on the upper frame body 260, and hook portions 230c are formed on both sides of the pin hole 230b. The hook portion 230c is engaged with the protrusion 260b of the upper frame 260 . In addition, the negative electrode terminal plate 230 has a plate spring 230d elastically contacting the negative electrode of the circuit board 290 . On the one hand, as shown in FIG. 25 , the positive terminal plate 235 has a positioning pin hole 235 a that matches the positioning pin 260 c formed on the upper frame 260 , and hook portions 235 b are formed on both sides of the pin hole 235 c. The hook 235b is engaged with the protrusion 260d of the upper frame 260 . The positive terminal plate 235 has a plate spring 235c extending from one side and elastically contacting the side surface of the battery 116, and a plate spring portion 235d protruding from the other side and elastically contacting the positive electrode of the circuit board 290. In this way, in the data writing device of this embodiment, the battery 116 is embedded in the data writing device 140 side, and the switching device as in the first and second embodiments is not provided. When the data writing device 240 is used, It is only necessary to provide the release hole 20a in the middle cover 20 of the camera body and the storage portion 34 in the rear cover 30, and there is no need for a large number of design changes to the existing structure. Furthermore, while the battery 116 is mounted on the data writing device 240, as in the second embodiment, it is possible to use the data writing device 240 alone for the data writing check.

Fig. 26 is a circuit diagram showing the construction of the lighting circuit and the double lighting prevention circuit of the data writing device according to the present embodiment. The circuit is composed of a button switch 295 for lighting, a detection switch 296 for film winding, an integrated circuit 292, a resistor 294 and a capacitor 293 external to the integrated circuit, a tungsten lamp 291, a battery 116 and a capacitor 299 for preventing oscillation. The integrated circuit 292 is composed of a monostable and multivibrator 292a, analog switches SW ₀ , SW ₁ , drop resistors R ₁ , R ₃ , a counter 292b and a set-reset flip-flop 292c. The monostable multivibrator 292a has inverters INV ₁ -INV ₃ , a capacitor C ₁ and a drop resistor R ₂ .

Now, when the photographic film 2 is in the non-winding state, when the button switch 296 is disconnected (OFF), point A has a voltage drop due to the resistance R, as shown in Figure 27, point A is at a low potential (Vss) , and since the input of the inverter INV ₃ is stepped down by the resistor R ₂ , the output E of the inverter INV ₃ is at a high potential (V ₀₀ ). Therefore, the input B of the inverter INV ₁ is high, the output D thereof is low, and the output F of the inverter INV ₃ is high. As a result, the external capacitor 293 is charged while the internal capacitor _C1 is discharged. Next, when shooting, turn the film roll-up knob to roll up the photographic film 2. As mentioned above, the V-shaped bent portion 296c of the roll-up detection switch 296 is reciprocally inserted and detached from the guide hole 2a, and moves up and down, as shown in FIG. 27 Show, switch 296 just does the opening and closing of a certain number of times. Since there are 8 guide holes in a frame in a general 35mm camera, 8 pulses are added to the clock pulse input CL of the counter 292b by a complete scrolling operation. If there are 8 sawtooths (generally N teeth), the pulse rises, and the QN output of the counter 292b rises from low level (Vss potential) to high level (V ₀₀ level). Because of the rise of the QN output, the voltage of the setting terminal S of the trigger circuit 292c rises, as shown in FIG. 27 , and its Q1 output shifts from a low potential to a high potential. Therefore, the analog switch SW ₀ is turned on, passing its input to the output. At time t ₀ , if the push button switch 259 is pressed by hand to turn it on, the analog switch SW ₁ is turned on, the input B of the inverter INV ₁ is still at a high potential, and the two poles of the capacitor 293 are turned on to discharge the charged charge . At time t ₁ , the button switch 295 returns to the off state, the input A returns to low potential, and the analog switch SW ₁ is turned on. At this time, since the input A drops to a low potential, the potential difference between the two poles is zero because the capacitor 293 has no charge, and the input B of the inverter INV ₁ drops to a low potential. As a result, the output D of the inverter INV ₁ becomes a high potential, but since the capacitor C ₁ has no charge, the potential difference between the two poles is zero, and the input of the inverter INV ₂ also becomes a high potential, so its output E becomes into a low potential. And the counter 292b is reset together with the flip-flop 292c. Since the output E shifts to a low potential, the output F of the inverter INV ₂ becomes a low potential, and thus the tungsten filament lamp 291 is turned on. However, since the capacitor _C1 is slowly charged, the input potential of the inverter _INV2 also drops, and soon its output E reverses to a high potential at time _t3 . The time _T1 to reach the reversal depends on the time constants of capacitor _C1 and resistor _R1 . Also, since the capacitor _C1 and the resistor _R1 are formed by semiconductor integrated circuits, their time constants are small. At time t ₃ , the output E of the inverter INV ₂ goes high and starts charging the external capacitor 293 . During this charging process, as shown in Fig. 27, the input B of the inverter INV ₁ rises exponentially, but when the input B reaches the threshold voltage of the inverter INV ₂ (generally V ₀₀ /2), at Time T ₄ output D reverses from high potential to low potential. The time T ₂ to reach the reversal depends on the time constants of the resistor 294 and the capacitor 293 . As a result, the output F of the inverter INV ₂ becomes a high potential, and the tungsten filament lamp 291 is turned off. Therefore, the lighting time of the tungsten filament lamp 291 is the low potential time T (=T ₁ +T ₂ ) of the output F, and even if the turn-on time of the push button switch 295 varies somewhat, the lighting time can be kept constant. In particular, when the push button switch 295 is turned on, the analog switch SW ₁ quickly discharges the capacitor 293 instantaneously. Therefore, the turn-on time (t ₁ -t ₀ ) caused by the push-in method of the push button switch 295 is not instantaneous even if it is instantaneous. It can be set that the capacitor 123 is indeed in an uncharged state, so that the voltage of the input B must drop to the low potential V ₃₃ , thus ensuring no deviation in the lighting time. This lighting circuit is not linked to the shutter blade of the camera itself, but the light bulb 291 is turned on by pressing the button switch 295 . Therefore, it is necessary to have a function to prevent repeated lighting. In this embodiment, the function of preventing repeated lighting is performed by the roll-up detection circuit. That is, the scroll detection circuit 280 is composed of a scroll detection switch 296, a counter 292b, a trigger circuit 292c, and an analog switch _SW0 . When the scrolling operation is not completed or incomplete, because the QN output of the counter 292b is at a low level, the Q1 output of the flip-flop circuit 292c is at a low level. Therefore, the analog switch SW ₀ is in the off state, as shown in FIG. 27 , even if the push button switch 295 is in the on state at time _t5 , the input high potential is not transmitted to the output A, thus preventing repeated lighting.

Example 4

Next, a fourth embodiment of the present invention will be described. In this embodiment, it is characterized in that the light sensor is used to receive the light beam of the object during shooting, so as to determine the light emitting time of the light source of the data writing device.

28 is a longitudinal sectional view of a non-replaceable film camera equipped with a data writing device according to a fourth embodiment of the present invention, FIG. 29 is a front view of the non-replaceable film camera, and FIG. 30 is a non-replaceable film camera. An exploded oblique view of the camera body and data writing device when the front cover of the camera is removed. Figure 31 is a plan view showing the state of the same data writing device seen from the direction of its upper frame, and Figure 32 is a cross-sectional view of the same writing device . Furthermore, in this embodiment, the same parts as those in the first embodiment are given the same reference numerals, and their descriptions are omitted.

In the camera body in this embodiment, the lower part of the light introduction tube 21 of the cover 20 is provided with a sensing light introduction optical path 21a, and at the lower part of the film bonding surface of the rear cover 30, there is formed a sensor light guide that passes through the sensing light introduction path 21a. A part of it is introduced into the light transmission hole 39 of the light sensor 310. The light transmission holes 39 are formed at the corners of the device housing portion 34 at the same positions as the guide holes 2 a on the film as will be described later. In addition, a sensor window 350 a is formed at a portion corresponding to the light transmission hole 30 on the lower housing 350 of the data writing device 340 . As shown in Figure 29, after the manual film roll-up knob 16 completes the roll-up, when the shutter lever 17 is pressed down, the shutter blade 23 rotates around its axis 23a from the position of the solid line in Figure 29 to the position of the broken line at two o'clock to allow light to pass through. The aperture 22a is opened to expose the photo film 2 of the subject. During exposure, a part of the object light is projected onto the light sensor 310 through the sensing light introduction optical path 21a, the light transmission hole 39 and the sensing window 350a.

In the internal structure of the data writing device 340, the data selection mechanisms of the data indicator wheels 70, 80 and the data plates 75, 85, etc. have the same structure as that of the first embodiment, and the components mounted on the circuit board 390 and the folder of the battery 116 The mounting mechanism etc. are different from the first embodiment. The circuit board 390 is sandwiched between the upper frame body 360 and the lower frame body 350 . The circuit board 390 is loaded with a tungsten filament lamp 391 as a light source, an optical sensor (light guide) 310, and electronic components which will be described later. Copper foil electrodes and circuit layouts are formed on required parts of the surface of the circuit board 390 . The bulb 391, the optical sensor 310, etc. are fixed to these electrode portions by soldering. Positioning pin holes 390 a , 390 b are formed on the circuit board 390 , and they are matched with the positions of the positioning pins 360 a , 360 b of the upper frame 360 . As shown in FIG. 31 , the photosensor 310 mounted on the circuit board 390 faces the sensor window 350 a of the lower housing 350 . The battery 116 is sandwiched between the battery pressure plate 392 of the plate spring on the positive electrode side and the battery pressure plate 393 of the plate spring on the negative electrode side. The ends 392 a and 393 b of the battery press plates 392 , 393 are in contact with the return wiring of the circuit board 390 .

Fig. 33 is a circuit diagram showing a light bulb lighting control circuit in the digital writing device according to this embodiment. The bulb lighting control circuit is composed of the aforementioned light sensor (light guide) 310, battery 116, luminous trigger signal amplifying circuit 394, monostable multivibrator 395, output circuit 396 and tungsten filament lamp 391. The light-emitting trigger signal amplifying circuit 394 is composed of the load resistor R ₅ of the light sensor 310 , the PNP semiconductor transistor Tr ₁ and its collector resistor R ₅ . The monostable multivibrator 395 is composed of a bypass capacitor C ₅ , a two-input NOT gate 395a, a capacitor C ₆ for determining the time constant, an inverter INV ₅ , a drop resistor R ₇ and a boost resistor R ₈ . The output O of the inverter INV ₅ is used as the first input of the NOT gate 395, and the second input terminal of the NOT gate 395a is stepped down through the resistor _R7 .

The output circuit 396 is composed of an inverter INV ₆ and a PNP semiconductor transistor Tr ₂ .

During the non-light-receiving period of the photosensor 310 , the input L of the inverter INV ₅ is at a high potential (V ₀₀ potential) due to the boost resistor R ₈ , so its output O is at a low potential (Vss potential). Therefore, the first input of the NOT gate 395a is also at a low potential, and the second input M of the NOT gate 395a is also at a low potential due to the dropping resistor _R7 , so the output N of the NOT gate 395a is at a high potential. As a result, capacitor C6 is in an uncharged state because both poles of capacitor _C6 are at high potential. Here, as mentioned above, when the shutter lever is depressed, the light sensor 310 receives a part of the subject light, and the transistor _Tr1 is turned on due to the voltage drop of the load resistor _R5 , and a trigger pulse of positive polarity appears at its collector. . The trigger pulse passes through the bypass capacitor C ₅ . The second input terminal M of the invertor 395a, as shown in FIG. 34, is supplied with a trigger pulse which rises at time _t0 . When the potential of the trigger pulse exceeds the threshold of the invertor 395a at time _t , the output N of the invertor 395a is reversed to a low potential. When the output N is inverted to a low potential, the input L of the inverter INV ₅ is lowered to a low potential because the capacitor C ₆ is in an uncharged state. Thereby, the output O of the inverter INV ₅ is shifted from a low potential to a high potential. At this time, even if the second input M of the NOT gate 395a also returns to a low potential (eg, even instantaneously during the light receiving period), the first input of the NOT gate 395a becomes a high potential, so the output N of the NOT gate 395a remains at a low potential. Capacitor _C6 continues to charge. Moreover, the capacitor _C6 and the boost resistor _R8 determine the time constant to charge the capacitor slowly. At this time, the input L of the inverter INV ₅ rises exponentially from a low potential to a high potential as shown in Figure 34. If it reaches the threshold of the inverter INV ₂ (usually V ₀₀ /2) at time _t3 , Then the output O of the inverter INV ₅ is reversed from high potential to low potential. Since this inversion puts the output N of the invertor 395a at a high potential, the capacitor _C6 is discharged and the input L of the inverter _INV5 becomes high. Thus, due to the generation of the trigger pulse M, the time T is determined only by the time constant of the capacitor _C6 and the voltage boosting resistor _R8 , and the output O of the inverter _INV5 remains at a high potential. As a result, the bulb 391 is turned on only during the lighting time T. As shown in FIG. Moreover, although the formation time of the trigger pulse M is long or short (the time for the shutter bar to be depressed is also long or short), once the trigger pulse is generated, the luminescence of only time T must be obtained.

In the above-mentioned embodiment, the sensor light introduction optical path 21a is arranged at the lower part of the light introduction cylinder 21 of the middle cover 20 so as to overlap with the guide hole of the photo film 2, but if the installation position of the sensor light introduction optical path 21a is set at It is sufficient that part of the subject light reaches the position on the photosensor 310 . Fig. 35 is a front view of a non-replaceable film camera according to a modified example of the present embodiment. In the modified example shown in FIG. 35(A), the light introduction cylinder 21 of the so-called inner cover 20 is independent, and a dedicated sensor light introduction optical path 21b is formed on a non-overlapping portion other than the photographic film 2 . On the other hand, in the modified example shown in FIG. 35(B), a dual-purpose structure is adopted in which the light introducing cylinder 21 itself serves as the sensor light introducing light path. In this case, since the amount of light reaching the photosensor 310 is transmitted through the photo film 2, the light intensity received by the photosensor 310 is worse than that of the modified example shown in FIG. 35(A). However, the middle cover 20 of the camera body does not need to be changed at all, and only the device receiving portion 34 having a light-transmitting hole on the rear cover 30 needs to be changed. In addition, the above-mentioned light source lighting control circuit consumes very little current when the bulb is not ignited, so it can work for a long time with only a single battery. Also, since no components requiring high voltage are used, it is possible to operate with a 1.5V power supply. In addition, since the number of components is small and expensive components are not used, the circuit can be constructed at a low cost.

Also, in the present invention, although calendar data such as year, month, and day are used as write data, it is not limited thereto, and it is also possible to realize data having suitable data such as place names, names of places of interest, heart marks, and signs such as stars. Board's writing device. Furthermore, it is also possible for the user to select such a writing device and simply attach it to a non-replaceable film camera.

As described above, the data writing device according to the present invention is suitable for use in what is generally called a disposable camera or a disposable camera because it is simple, inexpensive, and compact in structure because it is limited in the selection of the data part of the data plate. A data writing device for a camera whose film cannot be replaced.

Claims (22)

1. A data writing device, which is characterized in that the device is equipped with a light source installed in the inner space of an assembly composed of an upper frame and a lower frame, and a transparent lens for allowing light emitted by the light source to pass through the lower frame. The optical device projected from the light hole to the outside, and the writing data plate with multiple sets of light-transmitting or opaque data parts at approximately equidistant from the center of rotation, and the data indicating wheel with flange parts, the method The blue part has a data indication part directly or indirectly corresponding to the data part written in the data plate at a position approximately equidistant from the center of rotation. The data indication wheel is located on the outer side of the upper frame and allows the assembly to rotate. The data writing board is located on the outer side of the lower frame body and makes each data portion selectively face the light transmission hole, and the data indicating wheel is detachably fixed. 2. The data writing device according to claim 1, wherein the data indicating wheel has a shaft portion passing through the shaft hole of the assembly body, and the data writing board can be attached and detached by a positioning pin with a flange. fixed to the front end of the shaft. 3. The data writing device according to claim 2, wherein the data indicating wheel has a ratchet tooth part inside the flange part, and at the same time, the above-mentioned upper frame has a jumper that meshes with the ratchet tooth part. department. 4. The data writing device according to claim 3, characterized in that, on one side of the ratchet tooth part or the skip part, a shape is formed so that the above-mentioned upper frame body and the above-mentioned data indicating wheel can be moved to the meshing position when they are assembled. state slope. 5. The data writing device according to claim 4, wherein said data indicating wheel has an inner peripheral groove between said shaft and said ratchet gear, and at the same time, said upper frame is opened in said shaft hole The edge portion has a cylindrical portion fitted into the inner peripheral groove portion. 6. The data writing device according to claim 3 or claim 5, characterized in that, the meshing position of the ratchet tooth portion and the skipping portion is near the light-transmitting hole. 7. The data writing device according to each of claims 1 to 6, characterized in that the above-mentioned writing data plate is composed of a disk-shaped first writing data plate and a disk-shaped second writing plate. The data indicating wheel is composed of a first data indicating wheel corresponding to the first writing data plate and a second writing data indicating wheel corresponding to the second writing data plate. 8. The data writing device according to claim 7, characterized in that, the first data writing board and the second data writing board are arranged in a partially overlapping area, and the light-transmitting hole is arranged facing the overlapping area. 9. The data writing device according to claim 8, wherein the light transmission holes include a first light transmission hole facing the data part of the first writing data plate and a second light writing hole facing the second data writing plate. The second light-transmitting hole of the above-mentioned data portion, the first light-transmitting hole and the second light-transmitting hole are separated by a light-shielding plate. 10. The data writing device according to any one of claims 6 to 9, wherein said first writing data board has a year and month data section, and said second writing data board has a date data section. 11. The data writing device according to any one of claims 6 to 10, wherein said first and second data writing plates each have a non-transparent non-data portion. 12. A camera with a non-replaceable film, characterized in that the camera includes a data writing device, the device is equipped with a light source installed in the inner space of the assembled body formed by combining the upper frame and the lower frame, and a device for using The light emitted by the light source passes through the light-transmitting hole of the lower frame to project the optical device to the outside, and the write-in data board has multiple sets of light-transmitting or opaque data parts at approximately equidistant from the center of rotation, And a data indicating wheel with a flange part, the flange part has a data indicating part directly or indirectly corresponding to the data part written in the data plate at a position approximately equidistant from the center of rotation, and the data indicating wheel is located on the The outer side of the frame body and the assembly can be rotated. The data writing board is located on the outer side of the lower frame body and allows each data part to selectively face the light transmission hole. The data indicating wheel is detachably fixed. ,and This camera also has the back cover that is used for can install said data writing device, forms the camera body of data light transmission hole, and The exposure action of the shutter blade of the camera body actuates and closes the mechanical switch device of the light source lighting control circuit. 13. The non-replaceable film camera according to claim 12, characterized in that the lighting control circuit is located in the data writing device and has a time limit for supplying power to the light source for a certain period of time by closing the mechanical switch device. power supply circuit. 14. The non-replaceable film camera according to claim 12 or 13, wherein said battery for powering said light source is incorporated in said data writing means. 15. A data writing device, the device is equipped with a light source installed in the inner space of the assembly composed of the upper frame and the lower frame, and the light emitted by the light source passes through the light transmission hole of the lower frame to the Externally projected optics, and a writing data plate having sets of light-transmitting or opaque data portions approximately equidistant from the center of rotation, and a data indicating wheel with a flange portion in the There is a data indication part directly or indirectly corresponding to the data part of the writing data plate at approximately equal distance from the center of rotation. The data indicating wheel is located on the outer side of the upper frame and can rotate the assembly. The data writing The plate is located on the outer side of the lower frame and allows each data part to selectively face the light-transmitting hole. The data indicating wheel is detachably fixed, and it is characterized in that the writing device also has, A manual switch device that generates a lighting command signal for controlling the lighting of the light source, a detection device that detects the completion of film winding to generate a detection signal, and a device that memorizes the state of film winding completion or incompleteness by the detection signal, and on the film When the roll is completed, the built-in battery supplies power to the light source for a certain period of time based on the generation of the detection signal, and the circuit for preventing repeated lighting that prohibits power supply to the light source when the film roll is not completed. 16. The data writing device according to claim 15, wherein said detection means is a mechanical switch means for opening and closing by an elastic member fitted into the guide hole and moving up and down due to the winding up of the photographic film. 17. A non-replaceable film camera, characterized in that the camera has the data writing device as defined in claim 15 or 16, and a rear cover of the camera body capable of mounting the data writing device and forming a data light transmission hole. . 18. A data writing device, the device is equipped with a light source installed in the inner space of the assembly composed of the upper frame and the lower frame, and the light emitted by the light source passes through the light transmission hole of the lower frame to the Externally projected optics, and a writing data plate having sets of light-transmitting or opaque data portions approximately equidistant from the center of rotation, and a data indicating wheel with a flange portion in the There is a data indication part directly or indirectly corresponding to the data part of the writing data board at approximately equidistant from the center of rotation. The data indicating wheel is located on the outer side of the upper frame and can rotate the assembly. The board is located on the outer side of the lower frame and allows each data part to selectively face the light transmission hole. The data indicating wheel is detachably fixed on the writing device, and the data writing device also has The light sensor facing the light-sensitive transmission part of the lower frame, and the time-limited power supply circuit that uses the light detection signal generated by the sensor as a turning point to supply power to the light source for a certain period of time from the built-in battery. 19. A camera with a non-replaceable film, characterized in that the camera has the data writing device as defined in claim 18, and the data writing device can be installed and formed so that the data light transmission hole and a part of the photographing light are guided to the above-mentioned The camera body of the optical path of the sensor. 20. A non-replaceable film camera as claimed in claim 19, wherein said optical path is a projection optical path formed by a film guide hole. 21. A non-replaceable film camera as claimed in claim 19, wherein said optical path is a light-transmitting hole formed on the back cover of said camera body within the corner range of the photographic film frame. 22. A non-replaceable film camera as claimed in claim 19, wherein said optical path is a dedicated optical path formed outside the area occupied by the film.

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