JPH07320476A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To eliminate minute dust and to secure a sufficient quantity of ventilation to the inside of the case without making meshes fine. CONSTITUTION:A filter device 10 is formed out of fabric or non woven fabric made of an electrostatically chargeable material into the shape of a rectangular prism, holds a filter 5 between plate type insulators 13 from the left and right sides, holds the filter 5 and the plate type insulator between a pair of plate type conductors 11, 12 from the upper and lower sides, the plate type conductor 11 is connected to a + side of a power supply 3, and the plate type conductor 12 is grounded. Thereby, the filter 5 is made to be in a electrostatically charged state, and provided with an attracting function for dust charged with electricity. When the open air is passed through the filter 5, dust larger than a mesh of the filter 5 is eliminated at the filter, since almost dust smaller than a mesh is charged with positive electricity and negative electricity, is attracted by plate type conductors 12 or 13 respectively when dust is passed through the filter 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording and / or reproducing and / or erasing information on a recording medium.

[0002]

2. Description of the Related Art FIG. 10 is a schematic sectional view of a conventional optical information recording / reproducing apparatus disclosed in Japanese Patent Laid-Open No. 3-268291, in which 1 is a housing, 2 is an optical disk drive,
3 is a power supply for supplying electric power to the optical disk drive 2 and the like, 4
Indicates a cooling fan, and 5 indicates a filter (mesh filter). The housing 1 has a hollow rectangular parallelepiped shape, and the optical disk drive device 2 is installed inside the housing 1 so as to face the disk insertion / ejection opening 1 a opened on one side wall of the housing 1 and inside the other side wall of the housing 1. The cooling fan 4 and the filter 5 are fixed to the housing 1 facing the outside air intake 1b opened here, and the power source 3 is installed in the substantially central portion of the housing 1.

Next, the operation will be described. Information is optically recorded on the optical disc by supplying power from the power supply 3 to the optical disc drive 2 and setting the optical disc in the optical disc drive 2 through the disc insertion / removal opening 1a.
In addition, the information recorded on this optical disc can be read out optically. Also record such information,
During reading, the cooling fan 4 is driven and the outside air intake port 1
Outside air is introduced into the housing 1 through the filter 5 from inside a, and the air heated by the heat sources such as the power supply 3 and the optical disk drive 2 is discharged to the outside from the optical disk insertion / extraction opening 1a and a ventilation hole (not shown). The inside of the body 1 is cooled. The filter 5 is made of a material having a fine mesh such as a woven cloth or a non-woven cloth, and dust larger than the mesh is removed by passing the filter 5 through the filter 5 to protect the inside of the housing 1 from the dust. is doing.

[0004]

By the way, in such a conventional device, the filter 5 having a fine mesh is used as a means for removing dust, but the finer the mesh of the filter 5, the more the dust can be removed. Although the size range of dust is widened, if the mesh is too fine, the air permeability deteriorates, and there is a problem that a sufficient ventilation amount cannot be obtained. The present invention has been made in view of such circumstances,
It is an object of the invention to provide an optical information recording / reproducing apparatus capable of removing fine dust and ensuring a sufficient amount of ventilation inside the housing.

[0005]

An information recording / reproducing apparatus according to a first aspect of the present invention is characterized by including a charging material that adsorbs dust as a means for removing dust.

An information recording / reproducing apparatus according to a second aspect of the present invention is characterized by including a magnetized material that magnetically attracts magnetic dust as a means for removing dust.

An information recording / reproducing apparatus according to a third aspect of the invention is characterized in that a filter having an adhesive property on its surface is provided as means for removing dust.

An information recording / reproducing apparatus according to a fourth aspect of the present invention is characterized in that the surface of the dust collecting portion has an adhesive property and is provided with a dust collector that is detachably inserted inside the housing.

[0009]

In the first aspect of the invention, since it has a charging material,
It is possible to adsorb charged dust and prevent it from entering the casing regardless of its size.

According to the second aspect of the invention, since it has a magnetized material, it is possible to adsorb magnetic dust and prevent it from entering the housing regardless of its size.

According to the third aspect of the invention, since the filter having the adhesive property is provided, it is possible to prevent fine dust from being caught by the adhesive substance on the surface of the filter to enter the housing.

According to the fourth aspect of the invention, since the dust collector is provided with a material having an adhesive property on the surface of the dust collecting portion, a part of the fine dust that has entered the housing can be removed by adhesion. Is possible.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The case where the present invention is applied to an optical information recording / reproducing apparatus will be specifically described below with reference to the drawings.

(Embodiment 1) FIG. 1 is an enlarged perspective view of an optical information recording / reproducing apparatus, and FIG. 2 is an enlarged perspective view of a filter apparatus 10. In the figure, 1 is a housing, 2 is an optical disk drive, and 3 is the above-mentioned. A power supply 4 for supplying electric power to the optical disk drive 2 and the like, a cooling fan 10 and a filter device 10. The housing 1 has a hollow rectangular parallelepiped shape, and the optical disk drive device 2 is installed inside the housing 1 so as to face the disk insertion / ejection opening 1 a opened on one side wall of the housing 1, and the inside surface of the other side wall of the housing 1 is installed. The cooling fan 4 and the filter device 10 are fixed so as to face the outside air intake 1b opened here, and the power source 3 is installed in the central portion of the housing 1.

The filter device 10 is made of a woven fabric or a non-woven fabric made of a chargeable material and is formed into a substantially rectangular parallelepiped shape. As shown in FIG. 2, the filter 5 has plate-shaped nonconductors 13 and 13 from its left and right side surfaces. And the filter 5 and the plate-shaped non-conductors 13, 13 from above and below.
It is sandwiched by 12, and the plate-shaped conductor 11 is connected to the positive electrode side of the power source 3, and the plate-shaped conductor 12 is also connected to the negative electrode side (earth). As a result, the filter 5 is charged and has a function of adsorbing charged dust.

The operation of the first embodiment will be described. When the outside air passes through the filter 5, dust of a size larger than the mesh of the filter 5 is removed here, and the plate-shaped conductors 11 and 12 of the filter device 10 are connected to the power supply 3 and Since 11 is charged to the positive electrode and the plate-shaped conductor 12 is charged to the negative electrode, an electric field corresponding to the voltage of the power supply 3 is generated between the two plate-shaped conductors 11 and 12. Most of the dust having a size smaller than the mesh of the filter 5 is positively or negatively charged. Therefore, when the dust passes through the filter 5, the positively charged dust is charged into the plate-shaped conductor 1.
The negatively charged dust on the second side is adsorbed on the plate-shaped conductor 13 side.

In the first embodiment, the dust is filtered by the mesh of the filter 5, and the filter 5 and the plate conductors 11 and 12 are electrically charged by the plate conductors 11 and 12. As a result, the electrostatic adsorption function can be obtained and the charged dust can be adsorbed.

(Second Embodiment) FIG. 3 is a perspective view showing the structure of a filter device 20 used in the second embodiment. The filter device 20 is composed of a pair of comb-shaped conductors 21 and 22 and a filter 5 sandwiched between the comb-shaped conductors 21 and 22. Each of the comb-shaped conductors 21 and 22 is provided with a plurality of tooth portions 21a and 22a at predetermined intervals.
a and 22a are the tooth portions 21 of the other comb-shaped conductors 21 and 22.
One of the comb-shaped conductors 2 is fitted in the gap between a and 22a by interposing a band-shaped filter 5 therebetween.
1 is connected to the positive electrode side of the power source 3, and the other comb-shaped conductor 22 is grounded.

FIG. 4 is a perspective view showing another example of the second embodiment, in which a belt-shaped filter 5 is interposed between a pair of plate-shaped conductors 23 and 24, and a roll shape having a square cross section for about one turn. The plate-shaped conductor 23 on one side of the positive electrode side of the power source 3,
The other plate-shaped conductor 24 is grounded. The other structure is substantially the same as that of the first embodiment, and the description is omitted.

In the filter device 20 of the second embodiment as described above, the space between the comb-shaped conductors 21 and 22 or the plate-shaped conductors 23 and 2 is set.
4 is short, and the comb-shaped conductors 21 and 2 are the same even if the voltage is the same.
The electromagnetic field between the two or the plate-shaped conductors 23, 24 can be strengthened,
The adsorbing function for dust in the outside air flowing from the arrow direction can be significantly enhanced.

(Embodiment 3) FIG. 5 is a sectional view showing the structure of Embodiment 3, and in this Embodiment 3, the filter device 3 is used.
The magnet 31 is arranged on the inner side surface of the filter 5 which constitutes 0. The magnet 31 may be arranged on the outer surface side of the filter 5 or inside the filter 5. Further, the magnet 31 may be either a permanent magnet or an electromagnet. The other structure is substantially the same as that of the first embodiment, and the corresponding members are given the same numbers and their explanations are omitted.

Next, the operation will be described. The outside air is filtered when passing through the filter 5, dust having a size larger than the mesh is removed here, and dust having a size smaller than the mesh, which has magnetism, passes through the filter 5, Dust that is attracted to the magnet 31 and has magnetism is prevented from entering the housing 1. As long as the fineness of the mesh of the filter 5 is the same as the conventional one, the air permeability is the same as the conventional one, and an air flow rate sufficient to obtain the required cooling performance can be secured.

FIG. 6 is a perspective view showing another example of the magnet used in the third embodiment. The magnet 32 is formed by processing a magnetic material into a perforated plate shape having a plurality of holes 32a as shown in FIG. 6 and magnetizing this, and is arranged on the rear surface or the front surface of the filter 5. . Size of magnet 32, hole 32a
No particular limitation is imposed on the number and shape of the two, and for example, the shape may be rectangular or circular. The same effect can be obtained by disposing the magnet 32 inside the filter 5.
Further, even if the magnetic material is made into a powder and dispersed in the filter 5, the same effect can be obtained.

(Fourth Embodiment) FIG. 7 is a cross-sectional view showing the structure of a filter device 40 used in the fourth embodiment, in which the filter 5 is sandwiched between a filter cover 41 and an adhesive filter 42 from both sides to form a rectangular shape as a whole. Mold and filter holder 4
3 is integrally attached to the unit 3 to form a unit, and the unit is detachably attached to the outside air intake port by the filter holder 43.
The filter cover 41 is formed into a plate shape that is more self-supporting than the filter 5 and has air permeability, and the adhesive filter 42 is formed by applying an adhesive substance to the surface of a base material formed of sponge, woven cloth, or nonwoven cloth. Has been done.

The filter holder 43 is formed in a rectangular ring shape in a plan view and has a flange portion 43a on the outer periphery thereof.
Further, the inner peripheral surface is provided with a groove 43b having a concave cross section.
The filter cover 41, the filter 5, and the adhesive filter 42 are fitted in the inside of 3b in a stacked state, and are fixed to the outside air intake port at the flange portion 43a by a set screw or the like.

Next, the operation will be described. When the outside air passes through the filter 5, dust having a size larger than the mesh of the filter 5 is removed here, and dust having a size smaller than the mesh of the filter 5 passes through the filter 5 and then is adhered to the surface of the adhesive filter 42. Since it adheres, it can be prevented from entering the inside of the housing 1. Since it is not necessary to make the mesh of the filter 5 fine, without reducing the amount of outside air sucked into the housing 1,
It can prevent the entry of small size dust. The same effect can be obtained even if the filter 5 is omitted.

(Fifth Embodiment) FIG. 8 is a vertical sectional view showing the structure of the fifth embodiment, and FIG. 9 is an enlarged perspective view of a dust collector 50 used in the fifth embodiment. In the fifth embodiment, the structure of the filter device itself is substantially the same as that of the conventional device shown in FIG. 10, except that a dust collector 50 is provided in the housing 1.

As shown in FIG. 9, the dust collector 50 has a support plate 51.
The dust collecting plate 52 is provided on one surface of the above to extend at a right angle thereto. The dust collecting plate 52 has a tip side (free end side) in its entire length.
The surface of the portion (A portion) extending from the above to the majority is formed into a corrugated shape, and an adhesive substance is applied to the surface of the corrugated portion to impart tackiness. Such a dust collector 50 is above the outside air intake port 1b, and the dust collecting plate 52 is inserted into the housing 1 through the insertion / removal opening 1c formed in the side wall of the housing 1, and the tip portion thereof is an optical disk drive device. Position it above 2
The support plate 51 is mounted on a step portion 1d formed on the lower outside of the insertion / removal opening 1c.

Next, the operation will be described. The outside air is filtered when passing through the filter 5, dust having a size larger than the mesh of the filter is removed here, and dust having a size smaller than the mesh of the filter 5 passes through the filter 5 and enters the housing 1. It is agitated by the flow of air by the cooling fan 4 that enters and takes in the outside air and the rotation of an optical disk (not shown). The agitated dust adheres to the adhesive surface of the portion A of the dust collector 50, and the adhering dust does not float in the housing 1 again.

[0030]

As described above, according to the first aspect of the invention, there is an effect that the dust charged in the charging material is adsorbed, the amount of dust entering the inside of the housing can be reduced, and the reliability can be improved. .

According to the second aspect of the present invention, since magnetic dust is adsorbed by the magnetized material, the amount of dust entering the inside of the housing can be reduced and the reliability can be improved. is there.

According to the third aspect of the present invention, dust is captured by the filter having an adhesive property on the surface, the amount of dust entering the inside of the housing can be reduced, and the reliability can be improved. .

According to the fourth aspect of the invention, the dust collector having an adhesive property in the dust collecting portion can reduce the dust floating inside the housing, and reduce the adhesion to the surface of the recording medium.
It can improve reliability.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a configuration of a first embodiment.

FIG. 2 is an enlarged perspective view showing the configuration of the filter device used in the first embodiment.

FIG. 3 is a perspective view showing a configuration of a filter device used in a second embodiment.

FIG. 4 is a perspective view showing another example of the filter device used in the second embodiment.

FIG. 5 is a vertical cross-sectional view showing the structure of the third embodiment.

FIG. 6 is an enlarged perspective view showing another example of the filter device used in the third embodiment.

FIG. 7 is a cross-sectional view of a filter device used in a fourth embodiment.

FIG. 8 is a vertical cross-sectional view showing the structure of the fifth embodiment.

FIG. 9 is an enlarged perspective view showing the configuration of a dust collector used in the fifth embodiment.

FIG. 10 is a vertical sectional view showing a configuration of a conventional device.

[Explanation of symbols]

1 housing, 2 optical disk drive, 3 power supply, 4 cooling fan, 5 filter, 10, 20, 30, 40 filter device, 50 dust collector.

Claims (4)

[Claims] 1. A housing, a device which is housed in the housing and records, reproduces, or erases information on a recording medium, and means for forcibly taking in outside air from the outside of the housing to the inside. An information recording / reproducing apparatus having means for removing dust contained in the outside air taken into the housing, wherein the means for removing dust comprises a charging material for adsorbing dust. 2. A housing, a device which is housed in the housing and records, reproduces, or erases information on a recording medium, and means for forcibly taking in outside air from the outside of the housing to the inside. An information recording / reproducing apparatus having means for removing dust contained in the outside air to be taken into the housing, wherein the means for removing dust comprises a magnetized material that magnetically attracts the dust. 3. A housing, a device which is housed in the housing and records, reproduces, or erases information on a recording medium, and means for forcibly taking in outside air from the outside of the housing to the inside. An information recording / reproducing apparatus having means for removing dust contained in the outside air taken into the housing, wherein the means for removing dust is composed of a filter having an adhesive surface. . 4. A housing, a device which is housed in the housing and records, reproduces, or erases information on a recording medium, and means for forcibly taking in outside air from the outside to the inside of the housing. An information recording / reproducing apparatus having the above-mentioned information recording / reproducing apparatus, characterized in that the surface of the dust collecting portion has an adhesive property and is provided with a dust collector detachably inserted into the inside of the housing.