JP2000159285A - Cassette case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a cassette from heat rays without spoiling transparency of a case and to prevent deformation under heat and heat deterioration from occurring to a recording medium such as magnetic tape by a method wherein an external part of the case is formed of transparent resin with a heat ray absorbing agent mixed, or a transparent protective layer including the heat ray absorbing agnet is formed at the external part of the case. SOLUTION: A main body part 2 and a lid part 3 constituting an external part of a cassette case 1 are formed of a heat ray absorbing transparent resin which is made up by mixing a heat ray absorbing agent made of iridium stannic oxide powder having the property of absorbing heat rays with transparent resin. The iridium stannic oxide powder is mixed, while being formed in pellets, with the resin at the rate of a few to several tens percentage, and the pellets are melted and molded by injection molding. Or a transparent protective layer containing a heat ray absorbing agent made of the iridium stannic oxide powder having the property of absorbing heat rays may be formed at the external face or the internal face of the external part of the main body part 2 and the lid part 3, which are molded beforehand of an ordinary transparent resin, of the cassette case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent resin cassette case for accommodating cassettes such as audio cassettes and video cassettes.

[0002]

2. Description of the Related Art Conventionally, cassettes such as audio cassettes and video cassettes are sold in a cassette case made of a transparent resin, and are sold in a cassette case even after use.

[0003]

However, since the above-mentioned cassette case is formed so as to be transparent so that the stored cassette can be seen, the position where a heat ray such as direct sunlight is irradiated while the cassette is stored is provided. If left unattended, the heat ray energy will pass directly through the cassette case and reach the internal cassette, causing the cassette to become hot and suffer thermal damage. Have problems that occur.

[0004] For example, when the audio cassette is stored in a cassette case in an outdoor car in a sunny place and is exposed to direct sunlight when the weather is fine, the direct sunlight is passed through the cassette case to the cassette through the cassette case in addition to an increase in the temperature inside the vehicle. After irradiation, the cassette becomes hot and after a long period of time, the resin cassette is deformed and cannot be loaded into the tape deck of the audio system, running of the magnetic tape becomes unstable, Sticking, elongation, etc. may occur, and the recording / reproducing performance may be degraded.

The present invention has been made in view of the above points, and an object of the present invention is to provide a cassette case that protects a cassette from heat rays without impairing transparency.

[0006]

A cassette case according to the present invention which has solved the above-mentioned problems is made of a transparent resin for accommodating a cassette such as an audio cassette, a video cassette and the like. It is characterized by being formed by.

Further, another cassette case of the present invention is characterized in that a transparent protective layer containing a heat ray absorbing agent is formed on an outer shell portion.

As the above-mentioned heat ray absorbent, iridium tin oxide powder is preferable.

The transparent protective layer is formed by attaching a film containing a heat ray absorbent, coating a paint containing a heat ray absorbent, or the like.

[0010]

According to the present invention as described above, the outer shell of the cassette case is formed of a transparent resin mixed with a heat absorber such as iridium tin oxide powder or the outer shell contains the heat absorber. By forming a transparent protective layer, even if heat rays such as direct sunlight are irradiated, the heat rays are absorbed and blocked by the cassette case, and the temperature rise of the cassette housed inside can be suppressed and the transparency of the case is impaired. In addition, the cassette can be protected from heat rays to prevent thermal deformation and thermal deterioration of a recording medium such as a magnetic tape, thereby maintaining performance.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a perspective view of a cassette case according to one embodiment.

In the cassette case 1, a main body 2 and a lid 3 are connected to each other via a hinge 4 so as to be freely opened and closed, and a storage space for storing an audio cassette (not shown) is formed inside. At the same time, a projection 5 for fixing the reel is formed.

The main body part 2 and the lid part 3 which constitute the outer part of the cassette case 1 are made of a transparent resin mixed with a heat ray absorbent made of iridium tin oxide powder having a property of absorbing heat rays. Molded with resin.

The iridium tin oxide powder is mixed with the resin in the form of pellets in a proportion of several percent to several tens percent, and the pellets are melted and injection molded.

When an audio cassette is accommodated in the cassette case 1 as described above and left on a sunny day in a place exposed to direct sunlight in a car outdoors, the cassette case 1 absorbs heat rays and is cut off. In addition, the rise in the temperature of the cassette inside was suppressed, and thermal deterioration such as thermal deformation of the cassette could be prevented.

Further, as another embodiment, the main body 2 and the lid 3 of the cassette case 1 are molded in advance with a normal transparent resin, and a heat ray is applied to the outer surface or the inner surface of the outer portion. A transparent protective layer containing a heat ray absorber made of iridium tin oxide powder having an absorbing property may be formed.

The transparent protective layer is formed by applying a film containing a powder of iridium tin oxide,
It is formed by coating a paint containing a tin oxide powder or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cassette case according to one embodiment of the present invention.

[Explanation of symbols]

 1 cassette case 2 main body 3 lid

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsu Aramaki 2-26-30 Nishiazabu, Minato-ku, Tokyo Fujisha Shin Film Co., Ltd. F term (reference) 3E068 AA02 AA06 AB01 AC05 BB01 CC04 CE01 CE03 CE06 DD40 DE01 EE40

Claims (3)

[Claims] 1. A cassette case made of a transparent resin for accommodating a cassette such as an audio cassette and a video cassette, wherein the outer shell is formed of a transparent resin mixed with a heat ray absorbent. 2. A cassette case made of a transparent resin for accommodating a cassette such as an audio cassette and a video cassette, wherein a transparent protective layer containing a heat ray absorbent is formed on an outer shell portion. 3. The cassette case according to claim 1, wherein the heat ray absorbent is a powder of iridium tin oxide.