JP2009012845A - Disk-housing container, and shading cover case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk-housing container which is superior in shading property, and can prevent characteristic deterioration or the fading of a design by light from occurring over a long period of time, and to provide a shading cover case. <P>SOLUTION: This disk-housing container is equipped with a shading type disk mounting member 30, an upper lid member 10, and the shading cover case 20. In this case, the disk mounting member 30 can mount a disk 12. The lower surface of the upper lid member 10 is open, and the upper lid member 10 covers the top surface and the side surfaces of the disk which is mounted on the disk mounting member 30. The lower surface of the shading cover case 20 is open, and the shading cover case 20 covers the top surface and the side surfaces of the disk on the inside of the upper lid member 10. On the upper lid member 10, a lock section piece 13 which is projected to the outside from the lower edge external surface is installed. The disk mounting member 30 has a lock receiving section 33 which is projected from the disk mounting surface at a position corresponding to the lock section piece, and fastens the lock section piece 13 under a state of upward lock. On the lower edge external surface of the shading cover case 20, a flange section which reaches the lower surface of the lock section piece 13 under a state of being installed on the inside of the upper lid member 10 is installed for the disk-housing container. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk storage container and a light shielding cover case that avoid light irradiation on a storage disk and prevent light deterioration under long-term storage.

Conventionally, cylindrical storage containers for storing and storing various optical recording media such as CDs, DVDs, and BD disks have been widely used.
The cylindrical storage container is composed of a storage tray part and an upper cover part on which a disk is placed, and the storage tray part is usually formed of a thermoplastic resin containing a dye-based or pigment-based material. Opaque material is used. On the other hand, the upper lid part is made of a transparent or translucent material for the convenience of the user's visibility, and the storage disk and the jacket (paper describing the characteristics of the disk) stored together with the disk can be viewed. It is made like that.

However, optical recording media such as CD, DVD, and BD have a recording layer containing a transparent substrate and an organic dye, and a light reflecting metal layer. In addition, there is a risk of problems such as discoloration of the design (images formed with an ink jet printer) applied to the disk surface.
That is, from the viewpoint of user visibility, it is desirable that the upper lid part is transparent, but it is not desirable from the viewpoint of preventing deterioration of characteristics and appearance of the optical recording medium.

In view of the above problems, a proposal has been made for a storage container having a light shielding function (for example, see Patent Document 1 below).
This is to obtain a light shielding effect from the outside by sticking a predetermined light shielding sheet to the disk storage container.
However, since the shape of the storage container is three-dimensional, it is extremely difficult to apply the light-shielding sheet over the entire surface without a gap, and a sufficient light-shielding state has not always been obtained.

Japanese Patent Application Laid-Open No. 11-243837

  Accordingly, an object of the present invention is to provide a disk storage container and a light-shielding cover case that can form a sufficient light-shielding state and prevent characteristic deterioration and design fading due to light over a long period of time.

  According to the first aspect of the present invention, a light-shielding disk mounting member capable of mounting a plurality of disks in a stacked state, and a disk mounted on the disk mounting member, the lower surface of which is open. An upper lid member that covers the upper and side surfaces of the disc, and a lower surface that is open, and a light-shielding cover case that covers the upper and side surfaces of the disk on the inner side of the upper lid member. The disk mounting member has a lock piece protruding outward, and the disk mounting member protrudes from the disk mounting surface at a position corresponding to the lock piece and keeps the lock piece upward. A lock receiving portion that is locked in a state, and a flange that reaches the lower surface of the lock piece in a state of being provided inside the upper lid member is provided on the outer surface of the lower edge of the light shielding cover case. Discs featuring To provide paid container.

  According to a second aspect of the present invention, the light shielding cover case is composed of a disk-shaped upper wall portion and a side wall portion connected to the periphery of the upper wall portion. 2. The disc storage container according to claim 1, wherein a convex portion that contacts the periphery of the center hole of the disc is formed.

  According to a third aspect of the present invention, the disk mounting member has an annular protrusion protruding from the disk mounting surface along the side surface of the disk, and the light shielding cover case is formed of the annular protrusion. 3. The disk according to claim 1, wherein the disk comprises a lower part having a diameter corresponding to an outer peripheral surface, and an upper part having a diameter smaller than that of the lower part. A storage container is provided.

  According to a fourth aspect of the present invention, there is provided a light-shielding disk mounting member capable of mounting a plurality of disks in a stacked state, and a disk mounted on the disk mounting member, the lower surface of which is open. An upper lid member covering the upper and side surfaces of the upper lid member, and the upper lid member has a lock piece projecting outward from the outer surface of the lower edge, and the disk mounting member is attached to the lock piece. In a corresponding position, on the inner side of the upper lid member of the disk storage container having a lock receiving portion that protrudes from the disk mounting surface and locks the lock piece piece upward in a retaining state, A light-shielding cover case covering the upper and side surfaces of a disk, wherein a lower edge outer surface is provided with a flange that reaches the lower surface of the lock piece in a state of being provided inside the upper lid member. Provide a shading cover case To.

  According to a fifth aspect of the present invention, the upper wall portion includes a disk-shaped upper wall portion and a side wall portion continuous to the periphery of the upper wall portion. The lower surface of the upper wall portion is formed around the center hole of the disk. The convex part which contacts is formed, The light-shielding cover case of Claim 4 is provided.

  According to a sixth aspect of the present invention, the disk mounting member of the disk storage container is provided with an annular protrusion projecting from the disk mounting surface along the side surface of the disk. 6. The lower part having a diameter corresponding to the outer peripheral surface of the part, and an upper part connected to the upper end of the lower part through a stepped part and having a smaller diameter than the lower part. Provide a light shielding cover case.

  According to the first and fourth aspects of the present invention, the upper lid member is locked in an upwardly secured state by engaging the lock piece of the upper lid member and the lock receiving portion of the disk mounting member. For this reason, the shading cover case in which the collar portion reaches the lock piece of the upper lid member is also prevented from being pulled upward. As a result, the collar portion of the light shielding cover case comes into close contact with the disk mounting surface of the disk mounting member. Accordingly, it is possible to reliably block the incidence of ultraviolet rays, infrared rays, and the like from the outside, and to effectively prevent deterioration of the characteristics of the optical recording medium and fading of the printing surface under long-term storage.

Moreover, the mechanical strength in the vertical direction and the durability could be improved by providing the collar portion on the light shielding cover case.
Therefore, for example, when displaying at a storefront, the advertisement effect (internal visibility) is given priority, and a plurality of discs are accommodated by the disc mounting member and the upper lid member without using the light shielding cover case. When a user purchases a disk and stores it at home, the storage stability is given priority, and an attached (or optional) light-shielding cover case is provided inside the upper lid member for storage.
In this manner, the light shielding cover case can be used, not used, or used properly depending on the application, and the convenience of the trader and the user can be improved.

In order to ensure the compactness of the entire disk storage container, the shading cover case has a very small gap between the upper surface of the uppermost disk and the upper wall when storing the maximum number of disks that can be stored (for example, 10 sheets). It is preferable that it is comprised so that it may become. However, in this case, there is a possibility that the printing state of the label surface is deteriorated by rubbing the upper wall portion with the upper surface of the disc.
In this respect, according to the inventions of claims 2 and 5, the upper surface and the upper wall portion of the uppermost disc are provided by providing the light shielding cover case with the convex portions that contact the periphery of the central hole (non-printing area) of the disc. Even if the gap between the light shielding cover case and the disc label printing surface is very small, contact (rubbing) between the light shielding cover case and the disc label printing surface can be avoided, and deterioration of the printing state of the label surface can be reliably prevented.

  According to the third and sixth aspects of the present invention, the gap between the side surface of the disk and the side wall of the light shielding cover case can be minimized in the upper portion of the small diameter. Therefore, even if light enters the light shielding cover case, incident light can be prevented from being scattered in the cover case.

The disk storage container and the light shielding cover case of the present invention will be specifically described below with reference to the drawings.
The disc storage container of the present invention includes an upper lid member 10 (FIG. 1A), a light shielding cover case 20 (FIG. 1B), and a disc placement member 30 (FIG. 1C). Yes.
The disc mounting member 30 is made of a light-shielding material, and is provided with a cylindrical portion 11 that is inserted into the center hole of the disc at the center of the bottom surface portion 30a, so that a plurality of discs 12 are stacked. It is made to do.

When combined with the disk mounting member 30, the upper lid member 10 has a shape that covers the upper and side surfaces of the stacked disk 12.
Note that a plurality of (for example, three) lock pieces 13 protruding from the side wall surface are provided at equal intervals in the circumferential direction at the lower end of the side wall of the upper lid member 10, and at the peripheral end of the disk mounting member 30. The lock receiving portions 33 projecting from the bottom surface and extending inward in the radial direction so as to correspond to the plurality of lock portion pieces 13 are provided at a plurality of locations at equal intervals in the circumferential direction.
The upper lid member 10 is placed on the disk 12 mounted on the disk mounting member 30, and the upper lid member 10 is rotated with respect to the disk mounting member 30 (in the lock rotation direction), and the lock piece 13 of the upper lid member 10 and the disk By matching the lock receiving portion 33 of the mounting member 30, both are locked as shown in the sectional view of FIG. Moreover, if it rotates in the direction opposite to the lock rotation direction, the locking is released.
Although not shown, a stopper portion is formed on the lower surface of each lock receiving portion 33 so that the front end portion in the lock rotation direction abuts the front end portion in the lock rotation direction of each lock piece 13. Thereby, after each lock | rock part piece and each lock | rock receiving part latch, an upper cover member is prevented from rotating in a lock | rock rotation direction with respect to a disc mounting member any more.

When the upper lid member 10 is directly covered on the disk mounting member 30, a space indicated by a hatched line in FIG. 2 is generated.
The upper lid member 10 is made of a transparent or translucent material. For this reason, since light enters and scatters in the space, a light shielding cover case 20 is provided inside the upper lid member 10 to block this.

A detailed configuration of the light shielding cover case 20 of the present invention will be described with reference to FIGS.
FIG. 3A shows a side view of the light shielding cover case 20. The light shielding cover case 20 is formed of a thermoplastic resin (for example, polypropylene) containing an inorganic pigment. The content of the inorganic pigment is 1 to 10% by weight, preferably 5 to 8% by weight in consideration of light shielding properties and molding processability.
The light shielding cover case 20 is formed into a predetermined shape by, for example, vacuum forming. That is, it has a shape that covers the upper surface and side surfaces of the disc 12 accommodated and the upper portion of the cylindrical portion 11. That is, it is composed of a disk-shaped upper wall portion and a side wall portion continuous to the periphery of the upper wall portion, and the lower surface of the lock piece 13 is provided on the outer surface of the lower edge inside the upper lid member 10. The collar part 21 which reaches is provided.
FIG. 3B shows an enlarged cross-sectional view of the vicinity of the cylindrical portion 11 (the elliptical broken line portion in FIG. 3C). As shown in the drawing, it is preferable that a convex portion 22 that contacts the periphery of the center hole of the disk is formed on the lower surface of the upper wall portion of the light shielding cover case 20.

  As described above, by locking the lock piece 13 of the upper lid member 10 and the lock receiving portion 33 of the disk mounting member 30, the upper lid member 10 is locked in an upwardly retained state. For this reason, the light shielding cover case 20 in which the collar portion 21 reaches the lock portion piece 13 of the upper lid member 10 is also prevented from being pulled upward. As a result, the flange portion 21 of the light shielding cover case 20 comes into close contact with the disk mounting surface of the disk mounting member 30. Accordingly, it is possible to reliably block the incidence of ultraviolet rays, infrared rays, and the like from the outside, and to effectively prevent the deterioration of the characteristics of the optical recording medium and the fading of the printing surface under long-term storage (FIG. 3C) (FIGS. 3D and 3E)).

  Furthermore, by providing the shading cover case 20 with a convex portion 22 that contacts the periphery of the center hole (non-printing area) of the disc, as shown in FIG. 3C, the upper surface and upper wall of the uppermost disc. Even when the gap with the portion becomes very small, the contact (rubbing) between the light shielding cover case and the disc label printing surface can be avoided, and the printing state of the label surface can be reliably prevented.

Further, the disk mounting member 30 is provided with an annular convex portion 5 protruding along the side surface of the disk. The annular convex portion prevents the upper lid member and the lower end portion of the light shielding cover case 20 from contacting the side surface of the disk, and guides the rotation of the upper lid member at the time of locking and unlocking. The light shielding cover case 20 includes a lower part 20b having a diameter corresponding to the outer peripheral surface of the annular convex part, and an upper part 20a having a diameter smaller than that of the lower part. Is preferable (FIG. 3A).
By adopting such a configuration, the gap between the side surface of the disk and the side wall of the light shielding cover case can be minimized in the small-diameter upper portion 20a. Therefore, even if light enters the light shielding cover case, incident light can be prevented from being scattered in the cover case.

Next, a specific sample was prepared for the disk storage container of the present invention, and an optical recording medium storage experiment was performed using the sample.
[Experimental Example 1]
A disk storage container (sample 1) having a light shielding cover case (made of a thermoplastic resin containing 5% by weight of an inorganic pigment) and a disk storage container (sample 2) having no light shielding cover case were prepared.
Ten DVDs on which data was recorded by a commercially available drive were stacked and stored in samples 1 and 2 (FIG. 4).
Storage was performed for 0 to 600 hours under light irradiation conditions of 60,000 Lux, and signal reproduction and error value evaluation were performed every 100 hours (SA300 Advanced manufactured by Audeio Development Co., Ltd.).
The measurement results are shown in FIG.
The evaluation reference value conforms to DVD + R 8.5 GB Basic Format Specifications Version 1.1.

  It was confirmed that the disk storage container (sample 1) provided with the light shielding cover case was able to exhibit practically sufficient light shielding properties and effectively suppressed deterioration of the reproduction characteristics.

[Experiment 2]
Ten DVDs with images printed on the disk label surface were layered with a commercially available dye-based ink jet printer, and stored in the disk storage containers of Samples 1 and 2 used in Experimental Example 1, respectively.
Storage was performed for 20 to 100 hours under light irradiation conditions of 60,000 Lux, and visual sensory evaluation was performed on the discolored state of the inkjet printing surface every 20 hours.
The evaluation results are shown in Table 2 below.
Those in which the color change was not confirmed from the initial state were indicated as ◯, and those in which the color change was confirmed were indicated as x.

As shown in Table 2, in Sample 1 using the disk storage container having the light shielding cover case, the practically sufficient light shielding performance was exhibited, and therefore, fading of the printed state of the disk label surface could be effectively suppressed. It was confirmed.
On the other hand, in sample 2 using a disk storage container that does not have a light-shielding cover case, the discoloration is so noticeable that it can be confirmed visually after irradiation for about 20 hours, and there is a problem in practical use at the user level. Was confirmed.

(A) The schematic perspective view of the upper cover member which comprises a disk storage container is shown. (B) The schematic perspective view of a light shielding cover case is shown. (C) The schematic perspective view of the state which inserted and placed the disk center hole in the cylindrical part is shown. Represents the gap between the disc and the top lid member. (A) The side view of a shading cover case is shown. (B) A schematic cross-sectional view of a light shielding cover case, a cylindrical part, and a main part of the disk in the vicinity of the disk center hole is shown. (C) A schematic cross-sectional view of a state where a disk is placed, a light shielding cover case is mounted, and an upper lid member is further covered. (D) (e) The expanded schematic sectional drawing which shows the relative position of the collar part of a light-shielding cover case, a mounting member, and an upper cover member is shown. The sample in a preservation | save experiment is shown. The measurement result of the reproduction error of the sample disc is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Annular convex part 10 Upper cover member 11 Cylindrical part 12 Disc 13 Lock part piece 20 Light-shielding cover case 20a Upper part 20b Lower part 21 Grinder part 22 Convex part 30 Disc mounting member 33 Lock receiving part

Claims (6)

A light-shielding disk mounting member capable of mounting a plurality of disks in a stacked state; and
An upper lid member that has an open lower surface and covers an upper surface and a side surface of the disk placed on the disk placing member;
A lower surface is opened, and on the inner side of the upper lid member, a light shielding cover case covering the upper surface and side surfaces of the disk,
The upper lid member has a lock piece protruding outward from the outer surface of the lower edge,
The disk mounting member has a lock receiving portion that protrudes from the disk mounting surface at a position corresponding to the lock piece, and locks the lock piece upward in a state of being retained.
The disc storage container according to claim 1, wherein an outer surface of the lower edge of the light shielding cover case is provided with a flange that reaches the lower surface of the lock piece in a state of being provided inside the upper lid member. The light shielding cover case is composed of a disk-shaped upper wall part and a side wall part connected to the periphery of the upper wall part,
The disc storage container according to claim 1, wherein a convex portion that contacts a periphery of a center hole of the disc is formed on a lower surface of the upper wall portion of the light shielding cover case. The disk mounting member has an annular convex portion protruding along the side surface of the disk from the disk mounting surface,
The light shielding cover case includes a lower part having a diameter corresponding to the outer peripheral surface of the annular convex part, and an upper part having a smaller diameter than the lower part, connected to the upper end of the lower part via a step part. The disk storage container according to claim 1 or 2. A light-shielding disc placement member capable of placing a plurality of discs in a stacked state, and an upper lid that has an open lower surface and covers the upper and side surfaces of the disc placed on the disc placement member And the upper lid member has a lock piece projecting outward from the outer surface of the lower edge, and the disc placement member is located at a position corresponding to the lock piece. Covering the upper and side surfaces of the disc inside the upper lid member of the disc storage container that has a lock receiving portion that protrudes from the mounting surface and locks the lock piece piece upwardly A shading cover case,
A light-shielding cover case, wherein an outer surface of the lower edge is provided with a flange that reaches the lower surface of the lock piece in a state of being provided inside the upper lid member. It is composed of a disk-shaped upper wall part and a side wall part connected to the periphery of the upper wall part,
The light shielding cover case according to claim 4, wherein a convex portion that contacts a periphery of a center hole of the disk is formed on a lower surface of the upper wall portion. The disk mounting member of the disk storage container is provided with an annular convex portion protruding along the side surface of the disk from the disk mounting surface,
The lower part which has a diameter corresponding to the outer peripheral surface of the said annular convex part, and is connected to the upper end of the said lower part through a step part, and is comprised by the upper part of a smaller diameter than the said lower part, or characterized by the above-mentioned. 5. The light shielding cover case according to 5.

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