JPS621178A - Housing box for laser recording body - Google Patents

Abstract

PURPOSE:To reduce the power consumption by constituting both a box body and a cover body, of a heat insulating material, attaching a cooling element, connecting a heating surface to a radiation fin, controlling power supply to the cooling element by a signal from a temperature sensing element, and keeping a temperature in a housing space at a set temperature or below. CONSTITUTION:A housing box 3 for a laser recording body is constituted of a box body 4 consisting of a hat insulating material such as foaming styrol, etc., and a cover body 5 consisting of a heat insulating material in the same way. A cooling element 8 is buried in the side face of the box body 4. A metallic plate electrode 9 which becomes an endothermic surface of the cooling element 8 is placed so as to face a case housing space 12 of the box body 4, and a metallic plate electrode 10 which becomes a heating side is connected to heat conducting plate 13. A signal from a temperature sensing element 16 is inputted to an amplifier 17, and by controlling a relay 20, the inside of the space for housing the laser recording body in the box body can be brought to a temperature control more uniformly and efficiently.

Description

[Detailed Description of the Invention] 1. The present invention relates to compact discs, which have been used in place of records in recent years, or laser discs, which have been used in place of videos (hereinafter referred to as "compact discs" and "laser discs"). This box relates to a box for storing a recording medium (abbreviated as a recording medium).

In recent years, laser recording media called compact discs or laser discs have begun to be used in place of records and tapes. This laser recording medium is
Their popularity has increased significantly in recent years because they provide clear sound and images with less noise, are smaller in size and have a larger storage capacity than records, tapes, etc.

By the way, a laser recording medium is a digital sound or image recording medium that records sound or image information in the form of bits on the surface of a disk, irradiates the disk with a laser beam, and reproduces the sound or image by reading the reflected light. Image source.

Such a laser recording medium consists of a plastic substrate and a metal reflective film deposited on the substrate. Bits are formed on the metal reflective film, and the thickness of the laser recording medium is about 1.5 mm. The bit spacing in the radial direction is approximately 1.6 μm. However, when heat is applied to this laser recording medium,
This poses a problem in that the bit interval, etc. may change slightly, and the plastic layer that is the substrate may be thermally distorted, making it impossible to reproduce sound or images faithfully.

For example, if this laser recording material is left at a temperature of 40 to 50 degrees Celsius for a long time, the sound will be distorted during playback.
If the temperature exceeds 70'C, irreversible sound distortion may occur.

On the other hand, as the range of activities has expanded, reading or reproducing information recorded on a laser recording medium is not limited to indoors where the temperature is kept almost constant as in the past,
It is spreading outdoors.

By the way, information recorded on such laser recording media is read using a laser beam without using a record stylus or the like, so it is less likely to generate noise and can reproduce clear sounds or images. It is not preferable to store it in a place where high temperature conditions may continue for a long time, such as outdoors in midsummer, because laser recording media are sensitive to high temperatures as described above.

Therefore, leaving the laser recording medium in a closed car for a long period of time during high temperatures such as summer may damage the information recorded on the laser recording medium, and do not leave the car air conditioner on when the vehicle is parked. However, storage and management of laser recording media is troublesome.

Furthermore, if the laser recording medium is left in a closed room, the indoor temperature may reach a high temperature of 40° C. or higher in the summer, and there is a risk that the laser recording medium will be exposed to high temperatures and be adversely affected. Particular attention must be paid to the storage of laser recording materials that are to be preserved for long periods of time as records. In the summer, people sometimes try to enjoy laser recordings on the coast, lakeside, etc., but when doing so, there is a risk that the laser recording media may be exposed to direct sunlight or exposed to high temperatures. . In order to prevent this, a storage box for the laser recording medium may be necessary.

By the way, the inventors have discovered that if the laser recording medium is simply stored in a storage box made of plastic or the like, the storage box may reach a high temperature of 40'C or more, which may have an adverse effect on the laser recording medium. Ta. Therefore, there is a strong desire for a laser recording medium storage box that can solve the above-mentioned problems.

The present invention has been made in view of the above-mentioned problems, and it is possible to easily store a laser recording medium in a normal state regardless of the ambient temperature, and the structure is simple and inexpensive. The purpose of the present invention is to provide a storage box for a laser recording medium.

Both the box body and the lid attached to the box body are made of a heat insulating material, a cooling element is attached to the box body or the lid, and the heat absorption surface of the cooling element is exposed to the storage space, and the heat absorption surface is exposed to the inside of the storage space. The surface of the cooling element is connected to a heat dissipation fin that protrudes outside the storage space via a heat conductive plate, and the power supply to the cooling element is controlled by a signal from a temperature sensing element provided within the storage space. It is configured to keep the temperature below the set temperature.

With this configuration, simply by connecting a predetermined power supply to this laser recording medium storage box, the cooling element absorbs heat from inside the storage box, and when the inside of this storage box reaches a predetermined temperature, the temperature sensing element The power supply is cut off and the inside of this storage box is kept at a constant temperature.

Expanding illusion and Susukomaho week Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.

Fig. 1 is a perspective view showing a commercially available laser recording medium in a case, Fig. 2 is a partially cutaway schematic perspective view showing an embodiment of the present invention, and Fig. 3 is a - 4 is a sectional view taken along the line (2) and is a circuit diagram of the same embodiment.

As shown in FIG. 11, the laser recording medium 1 is housed in a flat plastic case 2 and is commercially available.
The laser recording medium storage box 3 of this embodiment stores the cases 2 in an upright position in a lined manner.

This storage box 3 for laser recording media consists of a box body 4 made of a heat insulating material such as styrofoam, and a lid body 5 also made of a heat insulating material. A metal plate (not shown) having good thermal conductivity may be applied to the entire or part of the inner surface of the box body 4, if necessary.

This box body 4 has a comb-shaped case support protrusion 6 on the bottom.
It is a box-like body in which a large number of are formed and the upper surface is open, and the lid body 5 is attached to this box body 4 via a hinge 7, so that when the lid body 5 is closed, the box body 4 is in a sealed state. It has become.

A cooling element 8 is embedded in opposite sides of the box body 4. This cooling element 8 has a semiconductor 11 (P-type semiconductor and N-type semiconductor) interposed between metal plate electrodes 9 and 10, and when a current is passed from one metal plate electrode 9 to the other metal electrode 10, the belt chain As a result of this effect, heat is absorbed at the junction between the metal plate electrode 9 and the semiconductor 11 on one side, and heat is generated at the junction between the metal electrode plate 10 and the semiconductor 11 on the other side.

If this metal electrode 9 is brought into close contact with the metal plate (not shown) attached to the inner wall surface of the box body 4 as necessary, the space in the box body in which the laser recording medium is accommodated will be more uniform. temperature can be controlled efficiently.

Therefore, in this embodiment, the metal plate electrode 9 serving as the heat absorption surface of the cooling element 8 is connected to the case storage space 12 of the box body 4.
A metal plate electrode 10 facing the heat generating side is connected to a heat conductive plate 13. The heat conductive plate 13 extends through the heat insulating material of the box body 4, and is connected to heat radiation fins 14 protruding from the box body 4.

A plurality of cooling elements 8 are connected in series as shown in FIG. A temperature sensing element 6 installed at a location not directly affected by temperature sensing element 16, such as a place where no metal plate is pasted inside the box body, is connected, and the signal from this temperature sensing element 16 is input to amplifier 17. The amplifier 17 is configured to control a relay 20 consisting of a switch 18 provided in the power supply circuit 15 and an excitation coil 19.

In the above-mentioned embodiment, a storage box is shown in which the laser recording bodies are arranged and stored in an upright state in the box body 4, but the laser recording bodies 1 are not necessarily stored in the storage box 3 in an upright state. It is not necessary to store them, and depending on the case, the laser recording bodies 1 may be stored in a storage box in a stacked manner. In this case, it is not necessary to provide the comb-teeth-shaped case support protrusions 6 on the bottom surface of the box body 4, and instead, gap-teeth-like case support protrusions 6 may be provided on the side surfaces of the box body 4.

Further, in the above embodiment, the lid 5 was attached to the box body 4 via the hinge 7, but the lid 5 may be detachably attached to the box body 4.

Next, the effect will be explained.

When the lid 5 is closed after the laser recording medium itself or the laser recording medium case 2 is stored in the laser recording medium storage box 3, the case storage space 12 becomes hermetically sealed.

When you turn on the power to the storage box in this state, the cooling element 8
Due to the Beltier effect, the metal plate electrode 9 facing the inside of the storage space 12 exhibits a heat absorbing effect, and the inside of the storage space 12 is cooled.

On the other hand, the other metal plate electrode 10 generates heat, and the heat generated at this time is guided to the heat radiation fins 14 via the heat conductive plate 13.
The heat is emitted to the outside from the heat radiation fins 14.

As described above, the inside of the box 3 is cooled and the storage space 1 is
When the inside of the cooling element 8 reaches a predetermined temperature, the temperature sensing element 16 outputs a current cutoff signal to the amplifier 17, and the amplifier 17 energizes the excitation coil 19 and turns off the switch 18, and the current is cut off. The endothermic action of stops.

On the other hand, when the storage space 12 reaches a predetermined temperature or higher again, the temperature sensing element 16 senses this and outputs a current conduction signal to the amplifier 17, and the relay 20 is connected to start the heat absorption action again.

If the cooling element 8 repeatedly absorbs heat and stops inside the storage box 3 in this way, the temperature of the storage box 3 may cause negative effects such as deformation of the bit or deformation of the board. It is desirable not to exceed ℃. For this reason, it is preferable that the cooling element 8 starts operating when the temperature of the storage space exceeds 40°C.

In the present invention, since the extremely compact cooling element 8 is used to cool the space closed by the heat insulating material, the entire storage box can be made compact, and since it is equipped with a temperature sensing element, it can be used to cool the battery carried in the vehicle. Even a small amount of power can be used sufficiently, and there is no need to run the air conditioner while the vehicle is parked to cool the entire interior of the vehicle, as is the case in the past.

Further, in the present invention, a battery can be used as a power source, and if a battery is used, it can be made into a portable storage box, making it possible to carry the laser recording medium to the coast, lakeside, etc. even in summer. Furthermore, it goes without saying that the storage box according to the present invention can also be used for indoor use at home.

A box body and a lid attached to the box body are both made of a heat insulating material, a cooling element is attached to the box body or the lid, and the heat absorption surface of the cooling element is exposed to the storage space, The heat generating surface is connected to a heat dissipation fin protruding outside the storage space via a heat conductive plate, and power supply to the cooling element is controlled by a signal from a temperature sensing element provided within the storage space, so that the storage space is controlled. Since the internal temperature is maintained below the set temperature, a compact storage box for laser recording media with low power consumption can be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a case containing a laser recording medium, Fig. 2 is a partially cutaway perspective view showing an embodiment of the present invention, and Fig. 3 is a sectional view taken along the line ■-■ in Fig. 2. , FIG. 4 is an electrical circuit diagram of the same embodiment. 1... Laser recording body, 4... Box body, 5...
... Lid body, 8 ... Cooling element, 12 ... Storage space,
13... Heat conduction plate, 14... Heat radiation fin, 16...
Temperature sensing element. Figure 1 Figure 2 Figure 3 Figure 4 Proceeding Amendment Portal 7 of "Claims" of the specification dated November 1, 1985, contents of the amendment The full text of the claims is as follows: I will correct it. Claims: A box body (4) having a storage space (12) for storing a laser recording medium (1) and a lid body (5) attached to this box body (4) are both made of a heat insulating material, A cooling element (8) is attached to the box body (4) or the lid body (5).
), the heat-absorbing surface of this cooling element (8) faces into the storage space (12), and the heat-generating surface is attached to a heat-conducting plate (
13) that protrudes outside the storage space via a heat dissipation fin (
14), and controls power supply to the cooling element (8) based on a signal from a temperature sensing element (16) provided in the storage space (12), so that the temperature in the storage space is lower than or equal to a set temperature. A storage box for a laser recording medium, characterized in that it is configured so as to maintain the storage box.

Claims (1)

[Claims] A box body (4) having a storage space (12) for storing a laser recording medium (1), and this box body (4)
Both the lid body (5) attached to the
A cooling element (
8), the heat-absorbing surface of the cooling element (8) is exposed to the storage space (12), and the heat-generating surface is provided with a heat dissipating fin (14) protruding outside the storage space via a heat conductive plate (13). ), and controls power supply to the cooling element (8) based on a signal from a temperature sensing element (16) provided in the storage space (12) to raise the temperature in the storage space to a set temperature or higher. A storage box for a laser recording medium, characterized in that the storage box is configured to maintain the storage of a laser recording medium.