JPH0490188A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve the cooling effect of an optical disk drive by individually arranging a power supply cooling air duct and an optical disk drive cooling air duct. CONSTITUTION:An air duct from a cooling fan 10 is divided into an air duct 11a for a driving power supply 11 and an air duct 12b for an optical disk drive 12 through a diaphragm 13 so that air warmed by the power supply 11 is not directly carried to the drive 12, and a cooled air sucked from the fan 10 through the air duct 12b is directly carried to the drive 12. Thereby, the temperature of the inside of the drive 12 can be reduced, the closedness of the drive 12 can easily be increased by using air carried from the rear part of a housing as compared with air from the front part and reliability for dust can be improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is an information recording/reproducing method that performs any of the following: recording, reproducing, and erasing information by irradiating a disk-shaped recording medium with a light beam. It is related to the device.

[Prior Art] With the development of optoelectronics today, optical information recording and reproducing devices that can randomly record, reproduce, or erase audio or image information with high performance using a light beam have been commercialized. .

For example, transparent acrylic resin in optical video equipment.

Recorded information consisting of protrusions or bit patterns on the disk surface made of transparent polycarbonate, etc. is detected by an optical head, photoelectrically converted, adjusted to an appropriate gain by an amplifier, and then transmitted through a reproduction circuit such as a D/A converter. After converting it into a predetermined analog quantity, the output device outputs it.

Originally, an optical head was made by attaching essential optical parts.
For the first time, it functions as an optical head. For example, the seventh
As shown in the figure, the conventional optical head includes a semiconductor laser light source 1, a collimator lens 2, a polarizing beam splitter 3.
4.5, objective lens 6, condensing lens 7, servo sensor,
An RF sensor and the like are attached to the head body.

Since the optical head uses various glass parts, it is very susceptible to dust, etc. If dust etc. adheres to the surface of the glass parts, the laser power on the disk surface will decrease.
This causes a decrease in the output of the servo sensor and the output of the RF sensor, resulting in a significant lack of drive reliability.

Therefore, to prevent dust from entering, the drive device, optical head, etc. are housed in a housing, and a sealed structure is adopted in which the front side of the housing opens only when inserting or ejecting a cartridge.

However, making the optical disk drive a sealed structure
The temperature inside the optical disk drive will rise, and the reliability of data written on disk D will decrease.

Therefore, as shown in FIG. 8, a cooling fan 10 is used,
A driving tltail and an optical disk drive 12 are cooled by a cooling fan 10.

However, since the air warmed by the drive power source 11 hits the optical disk drive 12, the effectiveness of the cooling fan 10 in the optical disk drive 12 is halved.

Furthermore, as shown in FIG. 9, it is possible to cool the optical disk drive 12 and driving power source 11 by sucking air from the front where the cartridge is inserted, but the flow of air is shown by the arrow. As a result, dust is likely to enter from the cartridge insertion port, and there is a risk that the reliability of the drive may be compromised.

[Problems to be Solved by the Invention] As described above, in the conventional example described above, the air heated by the driving power source is applied to the optical disk drive, which does not improve the cooling effect and requires a large amount of power consumption. The specifications of near motors, electromagnets, etc. have been reduced.

SUMMARY OF THE INVENTION An object of the present invention is to provide an information recording and reproducing apparatus that eliminates the above-mentioned drawbacks and improves the cooling effect of an optical disk drive.

[Means for Solving the Problems 1] In order to achieve the above-mentioned object, in the information recording and reproducing apparatus according to the present invention, a recording medium is driven by a disk drive, and information is recorded and reproduced on the recording medium by a light beam. - An information recording and reproducing device that performs at least one of erasing, characterized in that it is equipped with a driving power source and a cooling fan, and the air path from the cooling fan is separated into the driving power source and the disk drive. It is something.

[Function J] The information recording and reproducing apparatus having the above-described configuration improves the cooling effect of the optical disk drive by separating the cooling air passage from the driving power source and the cooling fan to the optical disk drive.

[Embodiment 1] The present invention will be explained in detail based on the embodiment illustrated in FIGS. 1 to 6. Note that the same reference numerals as in FIGS. 8 and 9 indicate the same members.

FIG. 1 is a sectional view of the air passage of the cooling fan, showing the arrangement of the cooling fan 10, the driving power source 11, the optical disk drive 12, and the flow of cold air. cooling fan l
The wind path is divided into one for the drive power source 11 and one for the optical disk drive 12, and the air path 11 is separated using a partition plate 13.
a and 12b so that the air warmed by the drive power supply 11 does not directly hit the optical disk drive 12, and the air passage 12b allows the cold air sucked from the cooling fan 10 to directly hit the optical disk drive 12. ing.

By using air from the rear of the housing, it is easier to seal the optical disk drive 12 more tightly than from the front, and reliability regarding dust can be further improved. and the second
As shown in the figure, the lower temperature wind is transferred to the optical disk drive 1.
2, and the temperature inside the optical disk drive 12 can be lowered.

3 to 5 show other embodiments of the present invention. In FIG. 3, the partition plate 13 is positioned halfway, and the wind that cools the driving power source 11 and passes through the air passage 11a, The configuration is such that the wind that cools the optical disk drive 12 joins in the middle.

In addition, FIG. 4 shows that the wind that cooled the driving power source 11 is
The wind that cools the optical disk drive 12 passes through the wind path 12a and flows forward through the wind paths 11a and 12 on both sides.
a to improve the cooling effect.

In FIG. 5, a plurality of cooling fans 14 and 15 are provided to cool the driving power source 11 and the optical disk drive 12, respectively. In this case, as shown in FIG. 4, it is also possible to provide air passages 11a and 12a on both sides to increase the cooling effect.

Furthermore, as shown in FIG. 6, a hole 16 may be provided in the side wall to completely separate the air duct 11a and the air duct 12a, and the same effect can be obtained.

[Effects of the Invention] As explained above, the information recording and reproducing device according to the present invention has the following advantages:
By separately providing a power supply cooling air passage and an optical disk drive cooling air passage, the cooling effect of the optical disk drive can be further improved, contributing to shortening of seek time, shortening of electromagnet switching time, etc.

[Brief explanation of drawings]

Figures 1 to 6 show an embodiment of the information recording and reproducing apparatus according to the present invention. Figure 1 is a configuration diagram of a cooling air passage, and Figure 2 shows the temperature of the cooling air and the temperature inside the optical disk drive. relationship diagram,
3 to 6 are configuration diagrams of cooling air ducts of other embodiments, FIG. 7 is a perspective view of an optical head, and FIGS. 8 and 9 are configuration diagrams of conventional cooling air ducts. It is. Reference numerals 10, 14 and 15 are cooling fans, 11 is a driving power source, 12 is an optical disk drive, lla and 12a are air ducts,
13 is a partition plate. Patent applicant: Canon Co., Ltd. Figure 1 Figure 4 Light Figure 2 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] 1. A disk drive drives a recording medium, and a light beam records, reproduces, and records information on the recording medium.
An information recording/reproducing device that performs at least one of erasing information, comprising a driving power source and a cooling fan, and an air path from the cooling fan is separated into the driving power source and the disk drive. Recording and playback device.