JPH05258550A - Optical information recording/reproducing device - Google Patents

Abstract

PURPOSE:To effectively cool the inside of a housing even for a compact optical information recording/reproducing device. CONSTITUTION:A housing 1 is provided with a spindle motor 3 for rotating a disk 2, an access mechanism 5 for moving an optical head 4 and a signal processing circuit in its inside. In the vicinity of the spindle motor 3, a rotative body 10 having a fan 11 is provided rotatably. The rotative movement of the spindle motor 3 is transmitted to the rotative boy 10 by a pulley 12. Thus, the inside of the housing 1 is cooled as the fan 11 rotates. Even when a fan or a wing is attached to the rotary shaft of the spindle motor, a rise in temperature is restrained in the housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical information recording device such as an optical disk device having a cooling mechanism.

[0002]

2. Description of the Related Art An optical information recording apparatus equipped with an optical disk comprises a spindle motor for rotating the disk, an optical head for reproducing and recording signals from the disk, An access mechanism for moving the optical head to a predetermined position on the disk is provided. In addition, the device, the rotation of the motor,
A control circuit that controls the operation of the access mechanism, etc.
A signal processing circuit for processing the recording signal is also provided. The motor, the optical head, the access mechanism, the control circuit and the signal processing circuit are arranged in the housing,
Recording and reproduction of information on the disc are performed while the optical disc is rotated at a high speed by a spindle motor.

When such an apparatus is driven, the control circuit and the signal processing circuit generate heat by themselves, the motor heats by the rotation, and the linear motor heats by the access. Therefore, heat is accumulated in the housing and the temperature rises. The temperature inside the housing is the guaranteed temperature of the optical disk drive, for example, 25 ± 2.
If the temperature exceeds 0 ° C., the focusing servo and the tracking servo may not be properly performed.

In order to solve such a problem, conventionally, an air blower composed of a fan and a motor is attached to an intake port formed in a housing. This blower normally sucks and exhausts the gas in the housing and discharges and exhausts the gas to cool the inside of the housing.

However, since the optical head, the access mechanism, etc. are arranged in the housing, the cooling efficiency in the housing is small. Especially when the optical disk drive is made compact, the inside of the housing cannot be cooled efficiently. Further, electric power is required for the rotation of the motor of the blower, which consumes a large amount of electric energy.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an optical information recording / reproducing apparatus which can efficiently cool the inside of the housing even if it is small in size and is energy efficient.

[0007]

In order to achieve the above object, the present inventor has completed the present invention as a result of earnest studies to effectively utilize the rotational movement of a spindle motor.

That is, the present invention is an apparatus provided with a rotation drive means for rotating a disk in a housing, wherein the optical information recording / reproducing apparatus has a blade attached to a rotating body of the rotation drive means. I will provide a.

Further, the present invention is an apparatus provided with the rotary drive means, wherein the rotary body is rotatably disposed in the housing and has blades, and the rotary motion by the rotary drive means is provided. Provided is an optical information recording / reproducing device including a transmission means for transmitting to a rotating body.

[0010]

In the apparatus having the above construction, since the blade is attached to the rotary member of the rotary drive means, the blade can be rotated in association with the rotation of the rotary drive means and the inside of the housing can be cooled.

Further, in the apparatus provided with the rotation drive means, the transmission means, and the rotary body having the blades, the rotary motion of the rotary drive means can be transmitted to the rotary body having the blades by the transmission means. Therefore, the blades can be rotated and the inside of the housing can be cooled in accordance with the rotation of the disk by the rotation driving means.

[0012]

Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

FIG. 1 is a partially cutaway schematic perspective view showing an optical information recording / reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view showing a main part of the apparatus shown in FIG.

This device comprises a disk 2 inside a housing 1.
A spindle motor 3 for rotating the disk, an optical head 4 for reproducing and recording a signal from the disk,
An access mechanism 5 for moving the optical head 4 to a predetermined position on the disk is provided. In this example, the disc 2 is rotatably accommodated in a cartridge 6 and is arranged in the housing 1 by inserting the cartridge 6 from an insertion opening 7 of the housing 1. Further, in this example, a hub (not shown) formed in the central portion of the disk 2 is magnetically attracted by a magnet or the like attached to the rotary shaft of the spindle motor 3.

The device also includes a control circuit (not shown) for controlling the rotation of the motor 2 and the operation of the access mechanism 4, and a signal processing circuit (not shown) for processing a reproduction / recording signal.

A friction wheel 8 having a small diameter is attached to the rotary shaft of the spindle motor 3 and is provided adjacent to the rotary shaft of the spindle motor 3 and facing the friction wheel 8 by a bearing 9. Rotating body 10 rotatably supported
Are arranged. A fan 11 is attached to the rotating body 10. Then, in order to transmit the rotational movement of the spindle motor 3 to the rotating body 10, the friction wheel 8
A pulley 12 is rotatably disposed between the rotating body 10 and the rotating body 10.

In such a device, the housing 1
Even if the internal temperature rises, the rotational movement of the spindle motor 3 can be transmitted to the rotating body 10 via the pulley 12, so that the rotating fan 11 can be used without installing a blower outside or inside the housing 1. The inside of the housing 1 can be cooled. That is, a self-cooling effect can be produced.

In the apparatus shown in FIGS. 1 and 2, the disc does not have to be rotatably accommodated in the cartridge, and the disc may be guided by a guide means for guiding it to a predetermined position in the housing.

In the above apparatus, the friction wheel of the motor is not always necessary as long as the smooth rotation of the disk in the housing is not hindered, and the movable pulley is brought into contact with the rotating shaft of the motor and the rotating body. May be. Also,
The diameter of the rotary shaft of the spindle motor may be increased. Also in this case, the friction wheel and the like are not always necessary.
Further, a normal gear or the like may be attached to the rotary shaft of the spindle motor.

The rotating body provided adjacent to the spindle motor may also have a gear shape. Further, the transmission means for transmitting the rotational motion of the motor to the rotating body is not limited to the pulley, but may be a gear, a friction wheel, a belt, or the like.

The structure of the fan attached to the rotating body is not particularly limited as long as it has a blowing ability. That is, generally, the rotation speed of the spindle motor is high. on the other hand,
In order to reduce the temperature inside the housing, the rotation speed of the fan does not have to be very high. Therefore, at least one blade may be attached to the rotating body. When a plurality of blades are attached to the rotating body, it is preferable to attach a plurality of blades at equal intervals in the circumferential direction in order to prevent the occurrence of vibration and the like and allow the rotor to rotate smoothly. Furthermore, in order to adjust the number of rotations of the rotating body, a speed varying mechanism such as a plurality of pulleys and gears may be interposed between the rotating shaft of the spindle motor and the rotating body.

Further, in the illustrated example, a rotating body having a fan is provided adjacent to the spindle motor, but the rotating body is a cutting member capable of transmitting the rotational movement of the spindle motor, and is placed at an appropriate position in the housing. Can be installed at

FIG. 3 is a schematic perspective view showing a main part of an optical information recording / reproducing apparatus according to another embodiment of the present invention.

In this example, the rotary body 22 is directly attached to the rotary shaft of the spindle motor 21, and a plurality of blades 23 are attached to the outer peripheral portion of the rotary body 22.

In such an apparatus, the spindle motor 2
The blade 23 can be rotated by the rotation of 1, and the temperature rise in the housing can be suppressed.

Also in the example shown in FIG. 3, at least one blade may be attached to the rotating body. Further, the fan may be directly attached to a proper position of the rotary shaft of the spindle motor.

[0027]

According to the optical information recording / reproducing apparatus of the present invention, since the rotary member and the blade can be rotated by the rotation of the rotary driving means, the inside of the housing can be efficiently cooled and the rotary motion by the rotary driving means can be achieved. Can be used effectively,
Energy efficiency can be improved. Further, since the inside of the housing can be self-cooled by the rotation of the blades, the cooling efficiency is high even with a small size.

[Brief description of drawings]

FIG. 1 is a partially cutaway schematic perspective view showing an optical information recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a main part of the device shown in FIG.

FIG. 3 is a schematic perspective view showing a main part of an optical information recording / reproducing apparatus which is another embodiment of the present invention.

[Explanation of symbols]

 1 ... Housing 2 ... Disk 3,21 ... Spindle motor 10, 22 ... Rotating body 11 ... Fan 12 ... Pulley 23 ... Blade

Claims (2)

[Claims] 1. An optical information recording / reproducing apparatus comprising a rotation driving means for rotating a disk in a housing, wherein a blade is attached to a rotating body of the rotation driving means. 2. An apparatus provided with a rotation driving means for rotating a disk in a housing, comprising: a rotating body rotatably disposed in the housing and having vanes; and the rotation driving means. An optical information recording / reproducing apparatus, comprising: a transmitting unit that transmits a rotational movement to the rotating body.