JPH08114896A - Film unit with lens - Google Patents

Abstract

PURPOSE: To provide a film unit with a lens where a unit main body and a paper box come into contact and are not separated, and which is excellent in appearance and operability. CONSTITUTION: Folding lines 5a and 5b formed in circular-arc shaped curves are provided in the grip cover area 5c of a curved surface 5 covering the grip part 3b of the unit main body 3 out of respective surfaces constituted by the paper box 4. When the paper box 4 is assembled, the grip cover area 5c of the curved surface 5 is swollen forward by the folding lines 5a and 5b. Thus, the grip part 3b of the unit main body 3 constituted of the curved surface is covered without interstice.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit in which a unit body incorporating a film and incorporating a photographing lens and a shutter mechanism is housed in a folded paper box.

[0002]

2. Description of the Related Art A film unit with a lens such as "Sharp Run is Super 800" (trade name) can be taken immediately on the spot of purchase, and it is easy to take it to a store that handles development after shooting. Is widely used from. From such a usage pattern, the lens-fitted film unit is made low in cost, and a paper box on which a cosmetic print is applied is used as the exterior.

[0003] Such a paper box prevents dirt from adhering to the unit body and ingress of dust, and has a clear design so as to be differentiated from other products and to be improved in marketability. By printing the operating method and the like, it has a function as a manual and has an important function of notifying the user of an appropriate operating method.

On the other hand, the outer surface of the unit main body has been changed from an initial box shape composed of only a flat surface to a shape utilizing a curved surface. In particular, by making the grip portion and the front surface curved, improvement in operability and compactness have been achieved, and a favorable result has also been brought from the design aspect.

However, as described above, when the outer surface of the unit main body is formed of a curved surface, the paper box with less flexibility and the unit main body do not fit perfectly, and a gap is often opened. It was Especially when the paper box absorbs moisture, the paper box warps due to the restoring force of the paper, and the paper box rises from the unit body, which not only makes the appearance unsightly, but also causes dust and foreign matter to get into the gaps, which may cause a malfunction of the lens film unit. It can be a cause. In addition, in a lens-fitted film unit with a built-in strobe device, the portion of the paper box that covers the strobe charge button is raised, which makes it difficult to operate the strobe charge button.

In particular, in the case of the lens-fitted film unit having the grip portion as described above, the paper box is easily lifted from the unit main body in the vicinity of the boundary step from the central portion of the front surface where the photographing lens and the like are exposed to the grip portion,
This is a particular problem in terms of product appearance.

In order to solve such a problem, the applicant of the present invention, for example, as disclosed in Japanese Utility Model Publication No. 6-6348, bends the folding lines of the paper box facing each other, and the surface of the paper box surrounded by the folding lines. Is a curved film that is curved toward the unit body (inside), so that the outer surface of the paper box is pressed against the unit body, and the unit body and the paper box do not separate even if the material stretches slightly. Is proposed.

[0008]

However, in the above-mentioned method, the surface of the paper box is curved toward the unit body (inside), and therefore, when the outer surface of the unit body is a flat surface, the method is applied with little discomfort. However, if this is applied to a lens-fitted film unit in which the outer surface of the unit body is curved outward, a large gap is created between the upper and lower portions of the curved surface, which is not desirable in appearance. Not only that, but there is also a problem in terms of operability.

The present invention has been made in consideration of the above-mentioned problems of the prior art, and a unit main body having a grip portion in which a part of the outer surface is bulged outward and a paper box for accommodating the unit main body are provided without a gap. It is an object of the present invention to provide a lens-fitted film unit that is closely attached and has good appearance and operability.

[0010]

To achieve the above object, in a paper box covering a unit body, a curved polygonal line is formed at a portion corresponding to a boundary step between a grip portion of the unit body and a portion not gripping the unit body. By forming the, the unit body and the paper box are brought into close contact with each other. According to a second aspect of the present invention, the polygonal line is formed by two parallel curved lines. Further, in the third aspect, the polygonal line is formed by two curved lines having different curvatures, both ends of which intersect each other at one point.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an external perspective view of a lens-fitted film unit embodying the present invention. FIG. 3 is an explanatory diagram showing the unit body and the paper box before inserting the unit body in FIG. 2 into the paper box. The lens-fitted film unit 2 includes a unit body 3 and a paper box 4 that covers the unit body 3. As shown in FIG. 1, the paper box 4 is assembled into a cube that covers the lens-fitted film unit 2 by adhering each of the margins 4a to 4g.

Among the respective surfaces of the paper box 4, the curved surface 5 that covers the front surface 3a of the unit main body 3 and the grip portion 3b that is curved and bulges forward, includes the grip portion 3b to the front surface 3a. Folding lines 5a and 5b for covering the curved step up to the bottom with no gap are formed in an arc shape with the same curvature, and when the paper box 4 is assembled, the folding line 5a
The grip cover region 5c of the curved surface 5 bulges forward due to a and 5b. As a result, the front surface 3a of the unit main body 3 and the grip portion 3b each having a curved surface in which the central portion gradually bulges from the left end toward the grip portion 3b as shown by the one-dot chain line in FIG. It is possible to cover without gaps.

The unit body 3 is provided with a taking lens 6, a viewfinder 7, a strobe light emitting section 8, a strobe charging button 9, a shot number display plate 11, a charging completion lamp 12, a release button 13, and the like, and the paper box 4 described above. Has
Openings are provided to expose these.
An unexposed photographic film (not shown) is built in the unit body 3.

The operation of such a configuration will be described.
When the unit body 3 of the lens-fitted film unit 2 of the present invention is covered with the paper box 4, the lens-fitted film unit 2 is placed on the paper box 4 in the unfolded state in which printing is completed as shown in FIG. Film unit with lens 2
After folding each surface so as to wrap, the glue margins 4a to 4g are adhered.

At this time, since the folding lines 5a and 5b of the paper box 4 are each formed in an arcuate curved line, when the paper box 4 is assembled, the grip cover area 5c bulges forward and curves. It is possible to cover the grip portion 3b that is present without any gap. In this way, the front surface 3a and the grip portion 3b of the unit body 3 which are curved surfaces are covered with the paper box 4 without any gap, and the curved surface 5 of the paper box 4 and the front surface 3 of the unit body 3 are covered.
a and the grip portion 3b are held in close contact with each other.

As a result, a gap is formed between the unit body 3 and the paper box 4 and the appearance is unsightly, or dust or foreign matter enters the gap to break the lens-fitted photo film unit 2, or the strobe charge button 9 is removed. The covered part will be lifted, and it will not be difficult to operate the strobe charge button. Further, since the grip portion 3b is in close contact with the grip cover region 5c of the paper box 4 without any gap, the sense of stability when holding the lens-fitted film unit 2 is significantly improved.

The shape of the fold line for covering the curved surface is not limited to the arc-shaped fold line having the same curvature as described above, but for example, the fold line 22a provided on the curved surface 22 of the paper box 21 shown in FIG. , 22b, of course, they may be formed by arcs having different curvatures.

Further, in each of the above-described embodiments, only the front surface of the unit main body and the front surface of the corresponding paper box are curved forward, but in addition to this, any surface of the unit main body is curved outward. Then, according to this, each surface of the corresponding paper box may be curved outward.

[0019]

As described above, according to the lens-fitted film unit of the present invention, a curved polygonal line is formed in the portion of the paper box corresponding to the vicinity of the boundary step between the grip portion and the non-grip portion of the unit body. Since the unit body and the paper box are in close contact with each other, there is no gap, the appearance,
It is now possible to provide a lens-fitted film unit with good operability.

[Brief description of drawings]

FIG. 1 is a plan view showing a paper box of a lens-fitted film unit embodying the present invention.

FIG. 2 is an external perspective view showing a lens-fitted film unit embodying the present invention.

FIG. 3 is an external perspective view of a paper box of the lens-fitted film unit embodying the present invention and a unit main body housed in the paper box.

FIG. 4 is a second embodiment showing a paper box of the lens-fitted film unit embodying the present invention.

[Explanation of symbols]

 2 Film unit with lens 3 Unit body 3a Front surface 3b Grip part 4 Paper box 5 Curved surface 5a, 5b Folding line

Claims (3)

[Claims] 1. A paper box formed by bending a unit main body, which comprises a photographing mechanism such as a photographing lens and a shutter, has an unexposed film built therein in advance, and has a grip portion in which a part of the outer surface is bulged outward. In the lens-fitted film unit housed in the above, in the paper box, at the portion corresponding to the vicinity of the boundary step between the grip portion and the non-grip portion of the outer surface, by forming a curved polygonal line, the unit main body and the A film unit with a lens that is closely attached to a paper box. 2. The lens-fitted film unit according to claim 1, wherein the polygonal line is two parallel curved lines. 3. The lens-fitted film unit according to claim 1, wherein the polygonal line is two curves having different curvatures, both ends of which intersect each other at one point.