JP2571245Y2 - camera - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for capturing a specific image other than a subject image on a part of a film.

[0002]

2. Description of the Related Art By blocking a part of a subject image which is incident on a photographic lens and is captured on a film screen, a specific image different from the subject, for example, a service mark of a specific maker is exposed to the blocked part. The invention of a camera designed to be used for advertising or commemoration has already been filed by the same inventor as Japanese Utility Model Application No. Hei 5-14623. The present invention is to improve the above-mentioned invention from another point of view.

[0003]

[Problem to be solved by the present invention]
The device of No. 23 uses a strobe light source as light for photographing a specific image, and then introduces spectral light to expose the specific image.For example, when the subject is bright and does not need a strobe light, If the photographer forgets to turn on the strobe lighting switch, the strobe does not emit light at the time of photographing the subject, the specific image is not exposed to the film, and the initial purpose may not be achieved.

[0004] In addition, the cheapest "film with lens" without built-in strobe, so-called "single use camera"
In, because the above idea can not be implemented,
It could not be applied to products where the lowest price is desired, such as gift applications.

[0005] Furthermore, the "single-use camera", which is most suitable for carrying out the above-mentioned invention, has a tendency to increase in film sensitivity in recent years, and products equipped with ISO800 high-sensitivity film have already been put on the market. In the case of high-sensitivity films, the demand for a built-in flash type is decreasing.

The present invention has been made in view of such a point, and blocks a part of a subject image which is incident on a photographing lens of a camera having no built-in strobe and is photographed on a film screen. It is an object of the present invention to achieve at a very low cost that a specific image different from a subject is exposed.

[0007]

In order to achieve the above object, a camera according to the present invention captures a specific image other than a subject image on a part of a film screen by pressing a release button. A switch means having a first switch position to be activated first and a second switch position to be activated subsequently is provided to charge a capacitor from a power source at the second switch position and to charge the capacitor at the first switch position. The current charged in the capacitor is discharged to turn on a light source for exposing the specific image.

In a camera for photographing a specific image other than a subject image on a part of a film screen, a first switch position to be activated first and a second to be subsequently activated according to an operation of pressing a release button. A switch means having a switch position, the light source for exposing the specific image is turned on by the current charging the capacitor from the power supply at the second switch position, and the capacitor is charged at the first switch position. It is configured to discharge current.

[0009]

When the release button is pressed down with a fingertip, the capacitor is charged by the power supply in a very short time at the second switch position. When the release button is further depressed and the shutter is activated, when the fingertip is released from the release button, the release button returns to the initial position, so the switch returns to the first switch position, and current flows from the charged capacitor to the light source. Lights up and the specific image is exposed.

When the release button is depressed with a fingertip, the capacitor is charged by the power supply in an extremely short time at the second switch position, so that the light source is turned on by the current charged in the capacitor and specified. Expose the image. When the finger is further released from the release button after the release button is further depressed to operate the shutter, the release button returns to the initial position, the switch returns to the first position, and the charged capacitor is discharged.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a section of the camera lens of the present invention taken along a plane including the optical axis, and FIG. 2 shows a film image taken by the camera of FIG. In FIG.
1 is a front body forming a dark box, 2 is a middle body and is fixed to the front body 1, and 3 is a rear body provided with a film pressure plate portion 4, which is detachably attached to the front body 1 as a whole. It forms a dark box.

A photographing lens 6 is fixed to the center of the front body 1 by a lens frame 5.
Between them, shutter blades 7 are provided so as to be openable and closable.
The side wall of the middle body 2 determines the screen 21 photographed on the film 8, and the light-shielding wall 9 integral with the middle body 2 shields one or more of a part of the subject image 22 incident from the photographing lens 6. , Forming the shooting dark box 10 of the specific image 23. (See Fig. 2)

A specific original sheet 11 for imprinting a specific image 23 on the film 8 is adhered to the lower end portion of the photographing dark box 10 in FIG. The light source 12 is an ultra-small lamp or the like, which is inserted into the photographing dark box 10 from the left side wall of the middle body 2.

Reference numeral 13 denotes a color filter. When the light source 12 is an incandescent lamp and the film 8 is of a delight type, a bluish filter is used in order to make the color temperature uniform. It should be noted that the outer glass of the incandescent lamp may be blue glass instead of the color filter 13, and the color filter is not necessary if the light source is close to sunlight, such as a discharge lamp.

FIG. 3 is a front sectional view of a release button portion and a circuit diagram for lighting the light source 12. That is, a release button 31 is slidably attached to the upper part of the front body 1 in FIG. 1 so as to be vertically slidable on the paper surface. The release button 31 is in contact with the inner surface of the front body 1 due to the upward movement of the spring 32 and is stationary.

Reference numeral 33 denotes a one-circuit, two-contact switch.
The contact 33b is connected to the light source 12, the contact 33d is connected to the power supply 4, and the opposite end of the capacitor 35 on the switch side is connected by a common conductor. When the release button 31 is not pressed as shown in FIG. 3, the tip of the movable section 33a is
3b.

Next, the operation will be described. In FIG. 3, when the release button 31 is pressed down with a fingertip, the section 33 is pressed.
a is separated from the contact 33b and contacts the contact 33d, so that the capacitor 35 is charged by the power supply 34 in a very short time. Further, after the shutter button is operated by depressing the release button 31, the operation returns to the state of FIG. 3 again in order to release the fingertip from the release button 31. 35
A current flows through the light source 12 to light the light source 12. For example, even when a power supply lamp is used, since the current flows instantaneously, the filament does not break even when the current is made higher than the rated current of the lamp and light emission with high luminance is performed.

By turning on the light source 12 in the imaging dark box 10,
The light transmitted through the original sheet 11 exposes the film 8 to expose the specific image 23, and at the same time as the subject 22 is photographed, the specific image 23 is divided and photographed on the same film screen 21 to achieve the initial purpose. .

In the above configuration, the battery can be used even if the voltage of the battery of the power supply 34 drops, and the current consumption of the "single use camera" is very small. FIG. 4 shows an embodiment in which a constant voltage circuit is used so that the capacitor is always charged at a predetermined voltage even if the voltage is reduced. 3 are given the same reference numerals, and only different parts will be described. That is, 46 is a constant voltage circuit composed of one or a plurality of transistors, 43 is a switch interlocked with the switch 33, and forms a so-called two-circuit two-contact switch with the switch 33.

Next, the operation will be described. In FIG. 4, when the release button 31 is pressed down with a fingertip, the section 3
When the contact 3a is separated from the contact 33b and contacts the contact 33d, the capacitor 35 is charged from the power supply 34 via the constant voltage circuit 46 in a very short time. Further, after the shutter button is operated by pressing the release button 31 down, the state returns to the state of FIG. 4 again in order to release the fingertip from the release button 31, the piece 33a contacts the contact 33b, and the piece 43a contacts the contact 43b to charge. The light source 12 is turned on by the condensed condenser 35. Therefore, as in the example shown in FIG.
The specific image 23 is exposed by exposing the film 8 to light transmitted through the specific image 23, and the specific image 23 is divided and photographed on the same film screen 21 simultaneously with the photographing of the subject 22.

FIG. 5 shows still another embodiment in which the components are the same as those in FIG. 3, but the connections are different. That is,
In FIG. 5, when the release button 31 is depressed with a fingertip, the piece 33a separates from the contact 33b and comes into contact with the contact 33d, and the capacitor 35 is connected to the power supply 34 in a very short time.
, The light source 12 is turned on by the current charged in the capacitor 35. Furthermore, release button 3
After the shutter is actuated by depressing the shutter release button 1, the user returns to the state of FIG. 5 again to release the finger from the release button 31, and the section 33a contacts the contact point 33b to charge the charged capacitor 3.
5 discharges. For this reason, even if continuous shooting is performed,
5 does not cause the light source 12 to be darkened.

FIG. 6 shows that the battery shown in FIG. 5 is always charged through the light source 12 at a predetermined voltage even if the voltage of the battery 34 drops, so that the battery can be reused for resource saving. This is an embodiment using a constant voltage circuit 66. Also in this example, since it is completely the same as the case of FIG. 4 for the embodiment of FIG. 3, detailed description will be omitted.

[0023]

[Effects of the Invention] The camera of the present invention is constructed as described above, and has the following excellent effects. Cameras without a built-in flash, especially the lowest-priced "film with lens", or even the "single-use camera"
Since it can be applied and implemented, the number of components is small, the wiring is simple and the cost can be extremely low,
It is useful when applied to products where the lowest price is desired, such as gift applications. Even if a battery is used as the power supply, current flows only at the moment when the light source emits light, so that the battery life is extremely long. Even if it is applied to a "single use camera", the used parts can be recycled and reused from the viewpoint of global environmental protection. Since the used parts are reused, the parts cost is further reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a camera of an embodiment, which is a cross section taken along a plane including an optical axis of a taking lens.

FIG. 2 is a film screen taken by the camera of FIG. 1,

FIG. 3 is a front sectional view of a release button portion of one embodiment and a circuit diagram for turning on a light source;

FIG. 4 is a front sectional view of a release button portion and a circuit diagram for lighting a light source, showing another embodiment using a constant voltage circuit;

FIG. 5 is a front sectional view of a release button portion and a circuit diagram for lighting a light source, showing another embodiment;

FIG. 6 is a front sectional view of a release button portion and a circuit diagram for lighting a light source, showing another embodiment using a constant voltage circuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front body 2 Medium body 3 Rear body 6 Photographing lens 8 Film 9 Shielding wall 11 Original sheet 12 Light source 21 Screen 22 Subject image 23 Specific image 31 Release button 33, 43 Switch 34 Power supply 35 Capacitor 46, 66 Constant voltage circuit

Claims (2)

(57) [Scope of request for utility model registration] 1. A camera for photographing a specific image other than a subject image on a part of a film screen, according to a pressing operation of a release button, a first switch position which is operated first and a second switch which is operated subsequently. And a switch unit having a position, and charging a capacitor from a power supply at the second switch position, discharging a current charged in the capacitor at the first switch position, and exposing a light source for exposing the specific image. A camera characterized by being turned on. 2. A camera for photographing a specific screen other than a subject image on a part of a film screen, wherein a first switch position which operates first according to a pressing operation of a release button and a second switch position which subsequently operates. The light source for exposing the specific image is turned on by the current charging the capacitor from the power supply at the second switch position, and the current charged in the capacitor at the first switch position is provided. A camera characterized by discharging.