JP2001091992A - Film unit with waterproof type lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film unit with a waterproof type lens having a structure by which flowing-out liquid does not stick to the film unit with a lens even in the case that liquid leakage is caused at a power source battery. SOLUTION: The film unit 2 with the waterproof type lens is constituted of a waterproof case 4, the film unit 3 with the lens housed at inside and a battery chamber 31. The power source battery 30 is housed in the battery chamber 31, and a positive electrode armature 32 and a negative electrode armature 33 insert-formed to the battery chamber 31 are made to abut on a positive electrode 30a and a negative electrode 30b. The armature 32 and the armature 33 are connected with the positive electrode terminal 38 and the negative electrode terminal 39 of a stroboscopic unit 15, and the stroboscopic unit 15 is supplied with power by the battery 30. Since the chamber 31 is provided at the outside of the film unit 3, liquid flowing out from the chamber 30 does not flow to the film unit 3, so that harmful liquid does not stick to a hand when the film unit 3 taken out from the waterproof case 4 is handled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a waterproof lens.

[0002]

2. Description of the Related Art A lens-equipped film unit which is sold in a state in which a film is loaded in advance is simple and inexpensive in that the film can be taken out to a developing dealer without taking out the film after photographing. , Is widely used in general. In order to make such a film unit with a lens available under water, the film unit with a lens is housed in a waterproof case with a watertight structure, and the film with a lens can be operated from outside the waterproof case. Units such as “Sharp Run Waterproof” and the like (product name) are commercially available from the present applicant.

In the above-mentioned waterproof type lens-fitted film unit, a waterproof case for closing the lens-fitted film unit in a watertight manner comprises a plastic case body for accommodating the lens-fitted film unit through an opening on the back, and an opening on the back of the case body. It consists of a watertight lid.

[0004]

However, in the above-mentioned waterproof type lens-equipped film unit, when the waterproof case is damaged due to a drop impact or the like and water enters inside, the strobe built in the lens-equipped film unit is used. There is a danger that the power supply battery of the device will short circuit and liquid leakage will occur. In particular, when an alkaline battery is used as a power supply battery, it is extremely dangerous if a strong alkaline solution harmful to the human body comes into contact with a hand or the like.

[0005] Further, when a used waterproof film unit with a lens is collected at a developing laboratory through a DPE store, the film unit with a lens is taken out of the waterproof case and development work is performed. Do not remove the film cartridge from the unit body, perform film development, print processing, etc. without noticing that the liquid leaks to the surface of the film unit with lens or the film cartridge. There is a high possibility of touching the liquid.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has a structure in which a leaked liquid does not adhere to a lens-fitted film unit even when a power battery leaks. The purpose is to provide a unit.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a film unit with a waterproof lens according to the present invention includes a photographing mechanism including a strobe device, a film unit with a lens incorporating a photographic film, and a lens thereof. A waterproof lens-equipped film unit comprising a waterproof case that covers the attached film unit in a watertight manner, wherein a battery serving as a power source of the strobe device is housed in a battery chamber provided outside the lens-equipped film unit. Is what you do. The battery chamber is formed inside the waterproof case or independently provided outside the waterproof case.

[0008]

FIG. 2 is a perspective view showing the appearance of a film unit 2 with a waterproof lens according to the present invention. The waterproof lens-fitted film unit 2 includes a lens-fitted film unit 3 having a built-in photographing mechanism, and a waterproof case 4 containing the lens-fitted film unit 3. At the center of the front surface of the waterproof case 4, there is provided a front exposing portion 7 which is a transparent portion for exposing the photographing lens 5 and the object side finder window 6 of the lens-fitted film unit 3 to the outside.

A shutter lever 9 for performing shutter release is provided on the left side of the front exposing section 7, and a push-type strobe operation member 10 for turning on a strobe circuit from the outside is provided on the right side. A strobe exposure unit 11 which is a transparent unit for radiating toward a subject is provided.

On the upper surface of the waterproof case 4, a winding dial 8 which is rotatably operated when winding one frame of film is attached in a watertight manner, and a top surface exposing portion which is a transparent portion for exposing a counter window for displaying the remaining number of images to be taken out to the outside. 12 are provided.

FIGS. 1 and 3 are an exploded perspective view of a film unit 2 with a waterproof lens and a sectional view of a main part showing an outline of an internal structure thereof. Inside the waterproof case 4, a film unit 3 with a lens and a power
And a battery chamber 31 for storing the same.

FIG. 4 is an exploded perspective view of the film unit 3 with a lens. The film unit with lens 3 is composed of a cartridge body 19 and a photographic film 2 wound in a roll.
, A plastic body base 13 in which a cartridge chamber 26 and a film chamber 27 are formed respectively, an exposure unit 14 and a strobe unit 15 mounted on the front side of the base 13, respectively, and the front and back of the body base 13. And a front cover 16 and a rear cover 17 made of plastics, respectively. The exposure unit 14 includes a shutter mechanism, a film counter mechanism,
It is a combination of members necessary for photography, such as a film unwinding mechanism, and is detachably attached to the main body base 13 by nail coupling.

A winding knob 28 is mounted on the upper portion of the cartridge chamber 26. By rotating the winding knob 28, the film can be wound, and the film counter disk 14a is provided below the counter window 14a in conjunction with the feeding of the film. Goes one step forward. When one frame of film has been fed, the film winding stop mechanism operates and the winding knob 9 is locked. Further, during this film winding period, shutter charging is performed by the shutter mechanism. When the shutter lever 9 is pressed down, the shutter blades open and close to perform one exposure, and the lock on the winding knob 28 is released. Then, by repeating the film winding operation and the pressing operation of the shutter lever 9, the exposed film is wound into the cartridge body 19.

The strobe unit 15 includes a circuit board 35 on which a circuit pattern is formed and on which electric components constituting a strobe circuit are provided, a light emitting unit 36 held on the circuit board 35, and the like. The light emitting section 36 is provided with a flash discharge tube and a reflector surrounding the flash discharge tube, and a protector 36a is mounted on the front surface.

The circuit board 35 is removably attached to the main body base 13 by engaging an opening 35a with a claw 13a formed between the exposure unit 14 and the film roll chamber 27.

At one end of the circuit board 35, a positive terminal 38 and a negative terminal 39, which are entirely formed by bending a metal plate, are provided.
It is fixed by soldering to a circuit pattern formed on the circuit board 35. The positive and negative terminals 38 and 39 project from the lower side of the circuit board 35 toward the side surface of the lens-fitted film unit 3, and the ends thereof are connected to a positive electrode connecting portion 32 a and a negative electrode connecting portion 33 b of the battery chamber 31. It has become.

As shown in FIGS. 1 and 3, in a box-shaped battery chamber 31 made of plastic, a positive electrode contact piece 32 and a negative electrode contact piece 33 formed by bending a metal plate are insert-molded. One end of each of the negative electrode contact pieces 32 and 33 is in contact with the positive electrode 30 a and the negative electrode 30 b of the power supply battery 30 inside the battery chamber 31, and the other end protrudes from the side surface of the battery chamber 31 to the outside, respectively. And, as a negative electrode connecting portion 33a, it is connected to a positive electrode terminal 38 and a negative electrode terminal 39 provided in the strobe unit 15 through an opening formed on a side surface of the film unit 3 with a lens.
Thus, the power supply battery 30 supplies power to the strobe circuit from outside the film unit 3 with the lens. In the present embodiment, an alkaline battery is used as the power supply battery 30.

As shown in FIG. 3, the waterproof case 4 has a substantially rectangular case body 21 for accommodating the lens-fitted film unit 3 and the battery 31 through an opening on the back, and the case body 2
1 and a case back lid 22 for closing the opening on the back in a watertight manner.

The case body 21 is formed in two colors so that an elastomer covers the transparent plastic layer. An opening is formed in a part of the elastomer, and a transparent plastic layer exposed from the opening forms an exposed portion such as the front exposed portion 7 and the strobe exposed portion 11 described above. The elastomer is a polymer material having rubber-like elasticity, and waterproofs and waterproofs the waterproof case 4. The strobe operating member 1 provided on the front of the case body 21
No. 0 has a form in which an opening is formed in the plastic layer and the opening is covered with an elastomer. for that reason,
The pressing portion 18 can be pressed from the outside of the waterproof case 4 via the elastically deformable elastomer. As a result, the electric contact piece 35b provided on the back side of the pressing portion 18 (FIG. 4)
) Contacts a pair of contacts on the circuit board 35 and conducts, so that the strobe circuit is turned on and the main capacitor 35 is turned on.
c is charged. When the synchro switch 35d is short-circuited by the operation of the shutter mechanism at the time of photographing, a flash is emitted from the strobe light emitting unit 36.

The case back cover 22 is made of a transparent plastic, and an object side finder window (not shown) provided on the back side of the film unit 3 with the lens is externally observed through the case back cover 22. I can do it. As shown in FIG. 3, locking holes 23 are provided on both side pieces on the front side (the surface that engages with the case body 21) of the case back lid 22.
Are respectively provided with two pieces 24 to be locked. These locked pieces 24 are engaged with locking claws (not shown) formed on the inner side wall of the case body 21. As a result, the case back lid 22 is firmly attached to the case body 21.

A rectangular frame-shaped ridge (not shown) is integrally formed on the outer periphery of the rear surface of the case body 21, and a rectangular frame-shaped concave groove is formed on the periphery of the case back lid 22. 22a
Are formed. When the case body 21 and the case back lid 22 are joined, the O-ring 25 is press-fitted into the concave groove 22a, and the ridge is fitted into the concave groove 22a so as to crush the O-ring 25, thereby providing waterproofing. The inside of case 4 is made watertight.

The battery chamber 31 is inserted into the case body 21.
When inserting the film unit 3 with the lens to which the lens is connected, the locked holes 31a formed on the upper and lower surfaces of the battery chamber 31
Are the locking claws 2 formed on the inner walls of the upper and lower surfaces of the case body 13.
1a (see FIG. 1). Thereby, the battery chamber 31 is attached to the case main body 13, and the opening formed in the front face of the battery chamber 31 is closed by the front inner wall of the case main body 13.

The used water-resistant film unit 2 with lens is collected by a developer through a DPE store. In the developing station, the film unit with lens 3 is first taken out of the waterproof case 4. At this time, there is a case where the power supply battery 30 that has received water or the like has leaked. However, as described above, the power supply battery 30 is stored in the battery chamber 31 provided outside the lens-fitted film unit 3. Thus, the outflow of the strong alkaline solution or the like leaked from the power supply battery 30 does not reach the lens-fitted film unit 3. Thus, after taking out the lens-fitted film unit 3 from the waterproof case 4, the developing operation can be performed without touching a harmful liquid such as a strong alkaline liquid.

Next, a second embodiment of the present invention will be described. Note that the same parts as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof will be omitted. FIG. 5 is an exploded perspective view of the film unit 42 with a waterproof lens according to the present embodiment, and FIG. 6 is a sectional view of a main part showing an outline of the internal structure.

As shown in FIG. 5 and FIG.
The lens-equipped film unit 3 is housed inside the camera. A battery chamber 60 for housing the power supply battery 30 is provided outside the waterproof case 44 independently. In addition, the film unit with lens 3 stored in the waterproof case 44
Is the same as in the first embodiment.

The waterproof case 44 comprises a substantially rectangular case body 51 for accommodating the film unit 3 with a lens through an opening on the back, and a case back lid 52 for closing the opening on the back of the case body 51 in a watertight manner.

As in the first embodiment, the case body 51 is formed in two colors so that an elastomer covers the transparent plastic layer, and the exposed portions such as the front exposed portion 7 and the strobe exposed portion 11 are formed. Also, a strobe operation member 10 and the like are provided.

The case back lid 52 is made of a transparent plastic, and an object side finder window (not shown) provided on the back side of the film unit 3 with the lens is externally observed through the case back lid 52. I can do it. As shown in FIG. 5, locking holes 53 are formed in both side pieces on the front side (the surface that engages with the case body 51) of the case back lid 52.
Are provided, each of which is provided with two locked pieces 54. These locked pieces 54 are engaged with locking claws (not shown) formed on the inner side wall of the case body 51. As a result, the case back lid 52 is securely attached to the case main body 52.

A rectangular frame-shaped ridge (not shown) is integrally formed on the outer periphery of the rear surface of the case body 51, and a rectangular frame-shaped concave groove is formed on the periphery of the case back lid 52. 52a
Are formed. When the case main body 51 and the case back lid 52 are connected, the O-ring 55 is press-fitted into the concave groove 52a, and the ridge is fitted into the concave groove 52a so as to crush the O-ring 55, thereby providing waterproofing. The inside of the case 44 is made watertight.

The battery chamber 60 has the same configuration as the waterproof case 44 described above, and has a substantially rectangular battery chamber main body 61 for accommodating the power supply battery 30 through an opening at the back, and a watertight seal at the opening at the back of the battery chamber main body 61. And a back cover 62 for the battery compartment.

A positive electrode contact piece 63 and a negative electrode contact piece 64 formed by bending a metal plate are insert-molded in a battery chamber 61 made of plastic.
And 64 are connected to the positive electrode 30a of the power battery 30 respectively.
The negative electrode 30b contacts the negative electrode 30b inside the battery chamber 60, and the other end protrudes outward from the side surface of the battery chamber main body 61. Are connected to a positive electrode terminal 38 and a negative electrode terminal 39 provided in the strobe unit 15 through an opening formed in a side surface of the flash unit 15. Thereby, the power supply battery 30 is used for the film unit 3 with the lens.
In addition, power is supplied to the strobe circuit from outside the waterproof case 44. In the present embodiment, an alkaline battery is used as the power supply battery 30.

The battery compartment back cover 62 is made of plastic, and as shown in FIG. 5, both side pieces on the front side (the surface that engages with the battery compartment main body 61) of the battery compartment back cover 62 are covered. Two locked pieces 66 each having a locking hole 65 are provided. These locked pieces 66 are attached to the battery chamber main body 6.
1 is engaged with a locking claw (not shown) formed on the inner wall of the side surface. Thereby, the battery compartment back cover 62 is securely attached to the battery compartment main body 62.

A rectangular frame-shaped ridge (not shown) is integrally formed on the outer periphery of the rear surface of the battery chamber main body 61, similarly to the case main body 51. In the same manner as in the case back lid 52, a rectangular frame-shaped concave groove 62a is formed. Then, similarly to the waterproof case 44, the O-ring 67 is press-fitted into the concave groove 62a, and the ridge is fitted into the concave groove 62a to make the inside of the battery chamber 60 watertight.

When the waterproof case 44 containing the lens-fitted film unit 3 and the battery chamber 60 containing the power supply battery 30 are connected, the positive and negative terminals 63a and 64a are connected to the positive and negative terminals 38 and 39. At the same time, a locking claw 6 formed above and below the side surface of the battery chamber main body 61
1 a and 61 b are engaged with engaged holes 44 a and 44 b formed in the side surface of the waterproof case 44. This allows
Battery compartment 60 is securely attached to waterproof case 44.

The used water-proof lens-fitted film unit 2 is collected at a developing laboratory via a DPE store. At the developing station, the lens-fitted film unit 3 is first taken out of the waterproof case 44. At this time, there is a case where the power battery 30 that has received water or the like has leaked, but as described above, the power battery 30 is
4 is housed in a battery chamber 60 provided independently outside, and leakage of strong alkaline solution or the like leaked from the power supply battery 30 is as follows.
It does not extend to the film unit 3 with a lens. Thus, after taking out the lens-fitted film unit 3 from the waterproof case 4, the developing operation can be performed without touching a harmful liquid such as a strong alkaline liquid.

Although the present invention has been described with reference to the two embodiments shown in the drawings, the present invention can be variously modified.

In the above embodiment, the battery compartment is provided on the right side of the lens-fitted film unit. However, the present invention is not limited to this. It is possible.

In the above embodiment, an alkaline battery is used as a power supply battery. However, it is more preferable to use a manganese battery or the like from which a dangerous strong alkaline solution does not flow out.

[0039]

As described above, according to the waterproof lens-equipped film unit of the present invention, by providing the battery compartment outside the lens-equipped film unit, harmful liquids such as strong alkaline liquid leaking from the power supply battery can be obtained. Does not adhere to the lens-fitted film unit, and the developing operation of the lens-fitted film unit taken out of the waterproof case can be performed safely.

Further, when seawater or the like enters the inside of the film unit with a waterproof lens, a short circuit occurs in the power supply battery, and hydrogen and oxygen are generated by electrolysis, a spark or the like emitted from the circuit board of the strobe device. Thereby, it is possible to prevent the danger of igniting them.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a film unit with a waterproof lens according to the present invention.

FIG. 2 is an external perspective view of a film unit with a waterproof lens according to the present invention.

FIG. 3 is an exploded perspective view of the film unit with a waterproof lens according to the present invention.

FIG. 4 is an exploded perspective view of the lens-fitted film unit shown in FIG. 3;

FIG. 5 is an exploded perspective view showing another embodiment of the film unit with a waterproof lens according to the present invention.

FIG. 6 is a sectional view of a main part of the film unit with a waterproof lens shown in FIG. 5;

[Explanation of symbols]

 2 Film unit with waterproof lens 3 Film unit with lens 4, 44 Waterproof case 7 Front exposure unit 10 Strobe operation member 11 Strobe exposure unit 12 Top exposure unit 15 Strobe unit 16 Front cover 17 Rear cover 21, 51 Case main body 22, 52 Case back cover 30 Power supply battery 31, 60 Battery compartment 32, 63 Positive contact piece 33, 64 Negative contact piece 35 Circuit board 38 Positive terminal 39 Negative terminal 61 Battery room main body 62 Battery room back cover

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03C 3/00 575 G03C 3/00 575B

Claims (3)

[Claims] 1. A waterproof lens-equipped film unit comprising a photographing mechanism including a strobe device, a lens-equipped film unit incorporating a photographic film, and a waterproof case for covering the lens-equipped film unit in a watertight manner. Wherein the battery serving as the power source is stored in a battery chamber provided outside the lens-equipped film unit. 2. The film unit with a waterproof lens according to claim 1, wherein the battery chamber is formed inside the waterproof case. 3. The film unit with a waterproof lens according to claim 1, wherein the battery chamber is provided independently outside the waterproof case.