JP2000250194A - Black box and black box kit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive black box capable of completely shielding the inside from light at the time of using and easy in handling and capable of simply assembling. SOLUTION: The black box is composed of a fox main body 10, a cap 20 and light shielding sleeves 40 placed to face each other and attached to a pair of side plates 17 each provided with an arm passing hole (opening) about at the center through a light shielding sleeve attaching guide, and the light shielding sleeve 40 is structured to be made of cloth, to have rubber line inside and a freely expandable arm inserting port 41 and to be freely detachably attached to the box main body 10 through the guide. The box main body 10 and the cap 20 are members formed of a corrugated fiberboard and are offered with the light shielding sleeve attaching guide, the light shielding sleeve 40 and assembling parts as the black box kit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dark box used for assembling or repairing work in a light-shielded state, and more particularly to developing a silver halide photograph or solving a trouble of a silver halide camera containing a film. Concerning the dark box.

[0002]

2. Description of the Related Art An undeveloped film photographed by a silver halide camera can be reproduced as a photographic image through a development and printing process. At the time of development, the undeveloped film wound around a patrone in the camera is taken out and reeled. It is necessary to put together the take-up reel and the developing tank into the developing tank filled with the developing solution. In addition, when the undeveloped film is taken out from the patrone and wound on a reel, the undeveloped film needs to be performed in a dark place protected from light so that the undeveloped film is not exposed to light.

[0003] In a photo lab or the like, when a patrone is inserted, there is a device that automatically winds up a reel in a light-shielded device to perform development. However, when an individual performs development, it is necessary to provide a dark room in a house or a separate building. The undeveloped film is taken out as a dark place by shielding light from a closed room such as a bathroom or a closet, mounted on a reel, and stored in a developing tank.

[0004] However, it is difficult for an individual to set up a development place in a house, apart from a professional photographer, because ordinary photographers have difficulty due to the size of the house and economical reasons. However, in many cases, it is difficult to completely shield a bathroom or a closet from light so that a complete dark place is obtained. In addition, it was necessary to perform the operation in a dark place not only at the time of development but also to solve or repair the trouble of the silver halide camera which occurred while the film was stored.

Conventionally, when undeveloped film is taken out in a place where it is difficult to completely block light, mounted on a reel and stored in a developing tank, troubles or repairs of a silver halide camera caused while the film is stored are solved. For example, a dark bag (dark bag: a bag configured to allow an arm to be inserted) or a dark box having a box-shaped arm formed on a side surface of the box is used as a tool used for such purposes.

In the dark background, the space is narrow,
When taking out the undeveloped film from the patrone in the bag of the user, the developing tank moves in the dark bag and tilts, causing problems such as spilling of the developing solution, and inconvenience such as light entering from the perforation because the bag is made of cloth. Yes, it is often used as an auxiliary tool in dark places.

[0007]

On the other hand, in the dark box, if the light shielding is complete, the undeveloped film is taken out from the patrone, mounted on a reel and stored in a developing tank.
Eliminate troubles with the silver halide camera, such as repairing the silver halide camera when it becomes impossible to wind up the film during shooting, and repairing troubles such as the inability to remove the instant camera from the box-shaped film container. In such a case, the operation can be performed with the undeveloped film accommodated, so it is convenient to provide a dark place such as a bathroom or a closet, but the conventional dark box has a cylindrical arm, so the user inserts the arm. When moved, a gap is created between the inside of the arm and the user's arm,
There was a problem that light entered.

Further, since the cylindrical body of the arm portion is made of a hard material and cannot be moved, it does not fit the user's arm at the time of use, which is one of the causes of a gap, and at the same time, the operation in the groping state inside the dark box. However, there was also a problem that it was difficult to do, and the usability was poor.

[0009] Further, since the above-mentioned conventional dark box is shipped from the manufacturer as a finished product and provided to the store, it is bulky, and the distribution cost per unit (mainly freight) is high, so that it is difficult to provide it at low cost. was there.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a user-friendly dark box which can completely shield the inside during use, and to provide an inexpensive dark box kit which can easily assemble the dark box.

[0011]

In order to solve the above-mentioned problems, a dark box according to a first aspect of the present invention comprises a box body having a pair of opposing side plates provided with arm holes, and a lid for sealing the box body. When,
A light-shielding sleeve attaching portion provided outside the arm through hole of each side plate portion provided with the arm through hole.

According to a second aspect of the present invention, in the dark box according to the first aspect, the light-shielding sleeve mounting portion has a neck attached to the mouth of the arm through hole, and a flange formed perpendicular to the neck and an arm through. And a light sleeve mounting guide having a hole.

According to a third aspect of the present invention, in the dark box according to the first aspect of the invention, the light-shielding sleeve uses an extensible member at the mouth and the other one of the mouths from the mouth on the light-shielding sleeve mounting portion side. Is formed small.

According to a fourth aspect of the present invention, in the dark box according to the first or third aspect, the light-shielding sleeve is made of cloth, and a light-shielding thin film member is bonded, adhered or applied to the inside.

According to a fifth aspect of the present invention, in the dark box according to any one of the first to fourth aspects, the lid is formed separately from the box main body, and when used, is pressed against the upper portion of the box main body by a pressing member when used. It is characterized in that the box body is sealed.

According to a sixth aspect of the present invention, in the dark box according to any one of the first to fourth aspects, the lid is formed integrally with the box main body, and has a locking member attached to the lid. In use, the lid is hung on the box body by the hooking member to be pressed against the upper part of the box body to seal the box body. Or the dark box according to item 1.

According to a seventh aspect of the present invention, in the dark box according to the fifth or sixth aspect, at least one pressing member for pressing the lid, a part of which is fixed to the bottom of the box body, is provided.

[0018] The dark box kit of the eighth invention is characterized by comprising the following members. a: a first member which is folded at the time of assembling to form a lid portion which is folded and integrated with the bottom and a pair of side plate portions and the box body; b: as a side plate portion having an arm through hole; A pair of second members joined or adhered to the side plate portions of the above to constitute a box body; c: a third member having an assembly groove for a lid portion and constituting a lid portion for sealing the upper portion of the box body during assembly, d. : A light-shielding sleeve member having an attachment port configured to be attachable to the light-shielding sleeve attachment guide and an aperture formed with an aperture, e: a neck attached to the mouth of the arm aperture of the second member, and the neck A light-shielding sleeve mounting guide having a flange and an arm through hole formed perpendicularly to the sleeve.

A ninth invention provides a dark box kit comprising the following members. a: a first member which is folded at the time of assembling to form a lid portion which is folded and integrated with the bottom and a pair of side plate portions and the box body; b: a side plate having an arm through hole; A pair of second members that are joined or adhered to the side plate portion to form a box body; c: a light-shielding sleeve having an attachment port configured to be attachable to a light-shielding sleeve mounting guide and an aperture formed by an aperture; A light-shielding sleeve mounting guide having a neck attached to the mouths of two arm through holes, a flange formed perpendicular to the neck, and an arm through hole.

According to a tenth aspect of the present invention, in the dark box kit according to the eighth or eighth aspect, the light-shielding sleeve uses an extensible member at the mouth, and the other side of the light-shielding sleeve mounting guide side from the mouth. Is characterized in that the opening is formed small.

An eleventh invention is characterized in that, in the dark box kit according to the tenth invention, the light-shielding sleeve is made of cloth, and a light-shielding thin film member is bonded, adhered or applied to the inside.

The twelfth aspect of the present invention relates to the eighth to eleventh aspects.
In the dark box kit of any one of the above inventions, the first member, the second member, and the third member are made of cardboard.

[0023]

FIG. 1 is a perspective view showing an embodiment of a dark box according to the present invention. A dark box 100 includes a box body 10 and a lid 20.
And a light-shielding sleeve 4 attached via a light-shielding sleeve attachment guide 30 to a pair of side plates 17 at positions opposing each other in the box body 10 and provided with an arm through hole (hole) substantially at the center.
0. Further, in the embodiment, the box body 10 and the lid 20 are formed of thick paperboard such as corrugated cardboard. However, the present invention is not limited to this, and may be formed of a wooden plate, a synthetic resin plate, or a metal plate. In the embodiment, the inside and the outside of the box main body 20 are entirely black, but the present invention is not limited to this.

The light-shielding sleeve mounting guide 30
(FIGS. 3 (a) and 6 (d)) show the periphery (outside of the side plate 17) of the arm through hole 19 (FIG. 2) which is not visible because it is covered with the light shielding sleeve 40 in FIG. ), And one opening 42 of the light shielding sleeve 40 is attached so as to cover the light shielding sleeve attachment guide.

The light-shielding sleeve 40 is shown in a spindle shape in FIG. 1, but may be a shape in which both ends are stretchable and contracted like a drawing sleeve (or a lantern sleeve) (FIG. 5E). Further, the other one opening 41 of the light shielding sleeve 40 is formed so as to be extendable and contractible as a through hole for a user's arm, and is formed with a narrowed tip, so that it is reduced to a small diameter when not in use, and when used, When the user passes through the arm, the arm is in close contact with the arm and no gap is generated.

In the example shown in FIG. 1, a pressing member 40 that presses the lid 20 to bring the lid 20 into close contact with the upper portion of the box body is attached to the box body 10. Edges 12 and 18 for joining (or bonding) the bottom 11 and the side plate 13 to the side plate 17 are provided on the side where the bottom 11 of the box body and the side plate 17 of the other pair of side plates 13 are in contact. In this example, the joining screw 1
5, the side plate 17 and the edge 12 and the edge 18 are joined to form the box body 10 (the side plate 17 and the edge 12 and the edge 18 are bonded with an adhesive to form the box body 10). May be done).

FIG. 2 is an explanatory diagram of an example of use of the dark box shown in FIG. 1 and 2, the dark box 100 is composed of the box body 10 and the lid 2.
0 are separately formed, and the lid 20 is put on the box body 10 at the time of use, so that the inside of the dark box 10 is in a light-shielding state.

Further, the operation of the arm of the user inside the dark box during the development (for example, the operation of taking out the undeveloped film from the patrone and storing the reel with the film wound around the reel in a groping state, etc.) causes the lid 20 to move. The lid 20 is pressed against the box body 10 by the pressing member 50 so that light does not enter due to displacement or removal.

The pressing member 50 is made of an elastic member (for example, a rubber belt) as shown in FIG. 3B, and is configured so that a part thereof can be fixed to the box body. In the embodiment, the pressing portion member 50 is a ring-shaped rubber belt, and a stopper 51 is formed by attaching a double-sided adhesive paper to a part of the rubber belt so that the pressing portion member 50 can be adhered and fixed to the bottom portion 11 and wrapped around the box body 10. Not limited to, for example, the bottom 11
Alternatively, a fastener is provided on one of the side plates 13 and the belt 50
Alternatively, a hooking member may be attached to and fixed to a fastener provided on the side plate.

When a stretchable member such as a rubber belt is used as the pressing member 50, the lid 20 is lifted upward as shown in FIG. After removing the lid 20 (or keeping it shifted), put necessary members such as a patrone, a film mounting reel, a developing tank and the like (in the case of repair, a silver halide camera and a tool) into the box main body 10 and then again put the belt 50 Is lifted, and the lid 20 is put on the box body 10.

In this embodiment, the pressing member 50 is fixed to the box main body 10. However, the pressing member 50 is not fixed to the box main body 20, but the cover 20 is put on the box main body. The section 20 and the box body 10 may be hung around. Alternatively, the lid 20 and the box body 10 may be tied around with a string.

FIG. 3 is a view for explaining a method for attaching the light-shielding sleeve to the side plate 17 of the dark box 10 and a diagram showing an embodiment (cross section) of the structure of the light-shielding sleeve attachment guide.

As shown in FIGS. 3A and 3B, the light-shielding sleeve 40 is provided with an arm through hole 19 provided in the side plate 17 of the box body 10.
A light-shielding sleeve mounting guide 30 having a rectangular flange is attached to the periphery of the neck 32 so that one opening 42 of the light-shielding sleeve 40 covers the flange 33 of the light-shielding sleeve mounting guide 30 as shown in FIG. Attach.

The mounting guide 30 is formed of a hard member (a mirror panel made of polystyrene in the embodiment) integrally formed as shown in the example of (d), and has a hole (arm through hole) having substantially the same size as the arm through hole 19. ) 31, a neck 32 forming an attachment portion on the side plate 17 side, and an edge (flange) 33 formed perpendicular to the neck 32. When attaching the light-shielding sleeve mounting guide 30 to the side plate 17, the arm through hole 19 provided in the light shielding sleeve mounting guide 30 and the arm through hole 33 provided in the side plate 17 are aligned, and then the mounting portion 31 is bonded to the side plate 17. Attach with the agent. In the embodiment, the mounting portion 31 of the light-shielding sleeve mounting guide 30 and the side plate 17 are bonded, but may be bonded with screws or the like.

The light-shielding sleeve 40 is an arm made of cloth whose inside is rubberized, and is detachable from the light-shielding sleeve mounting guide 30. Also, as shown in the example of (c), elastic members 45 and 46 such as rubber rings are inserted into the mouth portions 41 and 42 at both ends to make the mouth portions 41 and 42 extendable. The mouth 42 side is larger than the mouth 41 side and has a diameter about the outer diameter of the neck 32 of the light-shielding sleeve mounting guide 30 or slightly smaller than that. If it exceeds, it will be reduced to the outer diameter of the neck 32 and will be caught by the flange 33, so that it will not fall off or come off during the operation of the user's arm in the dark box. In the embodiment, since the flange 33 is formed in a square shape, the light-shielding sleeve 40 is easily caught and does not fall off or come off during use. However, the shape of the flange 33 is not limited to a square (that is, the shape of the light-shielding sleeve 40). Any shape that can be easily caught and does not come off or come off during use can be used).

The flange 33 and the light shielding sleeve 4
The light shielding film (rubber behind the cloth) shields light from the inside, and the light shielding sleeve adheres to the wrist (or arm) by the elastic member (rubber ring) 46 of the arm insertion opening 42, so that external light Cut off. As shown in FIG. 7, a double light-shielding sleeve provided with two arm insertion holes and having a double arm inserted may be used to assure light-shielding properties.

FIG. 4 is a view showing one embodiment of a light shielding structure on the upper part of the box main body 10 of the dark box.
Light-shielding packings (rubbers with grooves) 63, 63, 67, 67 are attached to the tops of the side plates 13, 13, 17, 17 respectively. Further, rubber (or sponge) 25, 25, 26,
Attach 26. At the time of use, a developing member (or a camera, a tool, or the like) is inserted, and then the lid 10 is closed, and FIGS.
Is pressed by a pressing member 50 such as a rubber belt as shown in FIG.

FIG. 5 is an exploded view of the main members constituting the dark box 100 shown in FIG. 1. At the stage of shipment from the manufacturer, these members and the joining members (screw, nut, or adhesive (shown in FIG. 1)) are used. 1) is shipped as a kit, and the user or the retailer selects the box body 10 and the lid 2 as shown in FIG. 1 based on these members and the assembly instructions provided by the manufacturer.
A dark box consisting of zeros can be assembled.

In FIG. 5, (a) is a view showing an example of a base member for assembling the box body as shown in FIG. 1, and the base member 11 'is made of cardboard (including the case of cardboard (in the embodiment, cardboard is used). , The bottom part 11, the side parts 13,
13 are provided, and edges 12, 18, and 18 for joining with the side plate member 17 shown in (b). The edge 12 and the edge 18 are provided with joining screw holes 12A and 18A.

FIG. 1B shows an example of a side plate member for mounting a light-shielding sleeve as shown in FIG. 1, which is made of the same material as the base member 11 ', and has a bottom (= upper side) 12a of the side plate 11. Is equal to the length of the edge of the bottom 11 of the base member 11 ', and the side 12b is equal to the length of the edge of the side 13 of the base member 11'. A hole 19 for passing an arm is provided substantially at the center of the side plate 17, and the base member 11 'is provided around the hole.
Screw hole 1 so as to align with screw holes 12A and 18A
7 are arranged.

At the time of assembly, the side 1 of the base member 11 '
3 and 13 are bent until they become vertical, respectively, and the edges 12, 12, 18, and 18 are also bent vertically, and the side plate 17 is arranged inside (or outside), and the respective screw holes are aligned. By inserting a screw and fastening with a nut, a box body as shown in FIGS. 1 and 2 can be constructed.

In the embodiment, the main body member 10 'and the side member 17' are joined by joining members such as screws (and nuts). However, the main body member 10 'and the side member 17' are bonded. Alternatively, the box body may be assembled, in which case the screw holes 12A, 18A and 17A are not provided. Note that it is desirable to provide a guide groove (or fold) for bending at the boundary between the bottom 11 of the base member 11 'and the side plate 13 so that the side plate 13 can be easily bent vertically during assembly.

(C) shows a lid member constituting the lid of the dark box, which may be made of the same material as the above-mentioned base member 11 '.
Different materials may be used. The lid member 20 ′ includes a lid top plate and side plates 21, 21 and 22, 22.
Edges 23, 23 provided with joining screw holes 23A are extended from both ends in the longitudinal direction of 2, respectively. Also, the side plate 2
Screw holes 21A for forming lids by being joined to the edges 23, 23 are provided at positions matching the screw holes 23A.

At the time of assembly, the side plates 21, 21 and 22,
22 is folded inward vertically so that the side plate 2
2 screw hole 23A of the edge 23 and screw hole 21A of the side plate 21
Fig. 1
And the lid 20 as shown in FIG. 2 can be comprised.

In the embodiment, the edges 23, 23 are joined with joining members such as screws (and nuts). However, the lids may be assembled by bonding the edges 23, 23. Well, in this case, screw holes 23A and 21
A is not provided. A guide groove (or fold) for folding is formed on the top plate of the lid member 20 'and the edge 2 so that the edges 21 and 23 of the lid member 20' can be easily bent vertically during assembly.
It is desirable to provide them at the boundaries between 1 and 23.

In the embodiment, the basic member 1 of the dark box kit is used.
1 ', the side plate 17 and the lid member are made of cardboard, but may be made of other thick paperboard, a plate made of synthetic resin or thin metal.

FIG. 4D is a view showing an example of a light-shielding sleeve mounting guide. In this embodiment, a styrene-made Mirapane is used, but a hard member may be used. And a square flange 33. The shape of the flange 33 is not limited to a square.

(E) shows an example of a light-shielding sleeve. The light-shielding sleeve 40 is a cloth-shaped arm part made of rubber with the inside thereof rubberized. The mouth portions 41 and 42 are made freely expandable and contractible by inserting elastic members 45 and 46. Further, the shape is narrowed down so that the diameter of the mouth 41 side is smaller than the diameter of the mouth 42 side. The inside of the light-shielding sleeve 40 is rubberized in the embodiment, but may be formed so as to guarantee light-shielding properties. For example, a synthetic resin may be applied to form a light-shielding thin film. Good.

(F) shows an example of the pressing member. In the embodiment, a stopper 51 for fixing is provided on a part of the rubber belt.
However, the stopper 51 need not be provided. The pressing member may not be provided as a dark box kit.

FIG. 6 is a view showing a modification of the dark box of the present invention, in which the box body and the lid are not separated from each other.
Reference numeral 0 denotes a lid 20 formed integrally with the box main body 10 and a pair of side plates 17 provided with arm through holes (holes) in the center of the box main body 10 at opposing positions, through a light-shielding sleeve mounting guide 30. Light shielding sleeve 40 attached
And The side plate 17, the light-shielding sleeve mounting guide 30 and the light-shielding sleeve 40 have the same configuration as that of FIG. 1, and may have the same material and color.

In FIG. 6, the dark box 100 has a clasp 71 attached to the front of the box body 10 and a hooking member 72 attached to the front of the lid 20. The lid 20 is opened as shown in FIG. After the developing member (or camera or tool) is put inside the box, the clasp 71 and the hanging member 72 are hung with a rubber string as shown in FIG. I do. Although the rubber cord 72 is used in the embodiment, the clasp 71 and the latch member 72 may be configured to be directly latchable so that the dark box 100 can be sealed.

When each member constituting the dark box shown in FIG. 6 is made into a dark box kit, the lid member 20 'shown in FIG. 6C is attached to one side of the side plate 18 of the base member 11' shown in FIG. May be used (in this case, the lid member in FIG. 6C is unnecessary).

FIG. 7 is a view showing a modified example of the light-shielding sleeve, in which a sleeve-like cuff (arm insertion port) 47 is further provided inside the light-shielding sleeve 40 to make the sleeve double. Upper, light-shielding through section mounting guide 30
Is shown in a cross-section in a state where it is attached to the radiator). In FIG. 7, a stretchable member is used for the mouth portion 47 of the inner sleeve, and the other mouth portion 48 is sewn, joined or bonded at a portion near the mouth portion 42 of the sleeve 40 to form a double sleeve. Is composed. The light-shielding sleeve configured as described above comes into close contact with the arm inserted by the user at two places (47, 45), so that the light-shielding property of the sleeve 40 is guaranteed.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made.

[0055]

As described above, according to the present invention, the arm portion is formed in a sleeve shape, and the arm insertion side is configured to be in close contact with the user's arm, so that the operation of the arm in the dark box is achieved. Is easy and easy to use. Also, external light does not enter the dark box from the arm during operation.

Further, since the arm portion (light shielding sleeve) is configured to be detachable, it is not bulky when not in use and does not take up a storage space. Also, replacement is possible.

Further, a more complete light-shielding state can be maintained by using an arm (light-shielding sleeve) having a double sleeve. In addition, since it is possible to attach a pressing member that presses the lid to the box, the tightness of the dark box itself is increased, and it is possible to prevent external light from entering due to displacement of the lid due to movement of the arm during operation in the dark box, The inside of the dark box can be completely shaded.

Further, since a dark box kit in which each member constituting the dark box is formed of cardboard or other thick paperboard can be provided, the store or the user can easily assemble the dark box. Further, the use of the dark box kit eliminates the need for assembling costs, and also reduces the transportation costs, so that it can be provided at a low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a dark box of the present invention.

FIG. 2 is an explanatory diagram of a usage example of the dark box shown in FIG.

FIG. 3 is a diagram illustrating a method of attaching a light-shielding sleeve and an embodiment of a structure of a light-shielding sleeve attachment guide.

FIG. 4 is a view showing one embodiment of a light shielding structure on an upper part of a box body of a dark box.

FIG. 5 is a view (plan view) showing main members constituting the dark box kit shown in FIG. 1;

FIG. 6 is a view showing a modified example of the dark box of the present invention.

FIG. 7 is a view showing a modification of the light shielding sleeve.

[Explanation of symbols]

REFERENCE SIGNS LIST 10 box body 10 ′ base member (first member) 17 side plate (second member) 19, 33 arm through hole 20 lid (lid portion) 20 ′ lid member (third member) 30 light shielding sleeve mounting guide (light shielding sleeve mounting portion) 40) light-shielding sleeve 41 mouth (arm insertion opening) 42 mouth (mouth on the light-shielding sleeve mounting side) 50 rubber band (pressing member) 100 dark box

Claims (12)

[Claims] 1. A box body provided with an arm through hole in a pair of opposing side plates, a lid for sealing the box body, and an outer side of the arm through hole of each side plate provided with the arm through hole. And a light-shielding sleeve mounting portion provided in the dark box. 2. The light-shielding sleeve mounting portion comprises an optical sleeve mounting guide having a neck attached to the mouth of the arm through-hole, a flange formed perpendicular to the neck, and an arm through-hole. The dark box according to claim 1, wherein: 3. The light-shielding sleeve according to claim 1, wherein the light-shielding sleeve uses an elastic member at an opening, and the other opening is smaller than the opening on the side of the light-shielding sleeve mounting portion. Dark box. 4. The dark box according to claim 1, wherein the light-shielding sleeve is made of cloth, and a light-shielding thin film member is bonded, adhered, or applied to the inside thereof. 5. The box body according to claim 1, wherein the lid is formed separately from the box body, and when used, is pressed against an upper portion of the box body by a pressing member to seal the box body. Or the dark box according to item 1. 6. The box part is formed integrally with the box body, and has a hook member attached to the lid part. In use, the cover part is hooked on the box body by the hook member. The dark box according to any one of claims 1 to 4, wherein the box body is pressed against the upper part of the box body by being stopped to seal the box body. 7. The dark box according to claim 5, further comprising at least one pressing member for pressing a lid, a part of which is fixed to a bottom portion of the box main body. 8. A dark box kit comprising the following members. a: a first member which is bent at the time of assembling to form a pair of side plates with the bottom, b: a side plate having an arm through hole, which is joined or adhered to the bottom of the first member and a pair of side plates at the time of assembling; A pair of second members constituting the main body, c: a third member having an assembly groove for a lid portion, and constituting a lid portion for sealing the upper portion of the box main body during assembly, d: attachable to a light-shielding sleeve mounting guide. A light-shielding sleeve member having a structured mounting opening and an arm opening formed by squeezing; e: a neck attached to the mouth of the arm through hole of the second member, and a flange and an arm formed perpendicular to the neck. A light-shielding sleeve mounting guide having a through hole. 9. A kit for a dark box, comprising: a: a first member which is folded at the time of assembling to form a lid portion which is folded and integrated with the bottom and a pair of side plate portions and the box body; b: a side plate having an arm through hole; A pair of second members that are joined or adhered to the side plate portion to form a box body; c: a light-shielding sleeve having an attachment port configured to be attachable to a light-shielding sleeve attachment guide and an arm-through port formed by drawing; A light-shielding sleeve mounting guide having a neck attached to the mouths of two arm through holes, a flange formed perpendicular to the neck, and an arm through hole. 10. The light-shielding sleeve uses an elastic member at an opening, and the other opening is formed smaller than the opening on the light-shielding sleeve mounting guide side. 9. The dark box kit according to 9. 11. The dark box kit according to claim 10, wherein the light-shielding sleeve is made of cloth, and a light-shielding thin film member is bonded, adhered or applied to the inside thereof. 12. The dark box kit according to claim 8, wherein the first member, the second member, and the third member are made of cardboard.