JPH0810910Y2 - Optical disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an optical disk device, and more particularly to an optical disk device characterized by its cooling structure.

[Conventional technology]

Two types of conventional optical disk devices will be described with reference to the drawings. The first conventional optical disk device will be described with reference to FIG.

The optical disc device 31 includes a control unit 4 and a drive unit 3. The control unit 4 is housed in a case 18, and printed wiring boards 17a to 17c for controlling the device 31 and a cooling fan 19 for cooling the heat generation of these wiring boards 17a to 17c.
It consists of and. On the other hand, the drive unit 3 is formed inside the housing including the front panel 32, the chassis 10 and the shield plates 15a to 15d. The front panel 32 is provided with a medium insertion port 5 for exchanging the medium 9, a shutter 6 for closing the insertion port 5, and a ventilation port 7 for taking in outside air. A cooling fan 16 is provided on the shield plate 15d on the opposite side of the front panel 32 to discharge the air inside the casing to the outside. Mounted on the chassis 10 are mechanical parts 8 and printed wiring boards 14a and 14b for slightly controlling the mechanical parts 8 of the two. The mechanical unit 8 is equipped with a spindle 11 for rotating a medium 9, an optical head 12 for accessing the medium 9, a carriage 13 and the like. The cooling of the drive unit 3 is performed by rotating the cooling fan 16 so that the outside air is taken into the drive unit 3 from the ventilation port 7 and discharged from the cooling fan 16 to the outside. The arrows in FIG. 2 indicate the flow of air.

Next, a second conventional example will be described with reference to FIGS. 5 and 6. In this example, the inside of the collective type optical disk device housing is formed in one space, and the control system unit and the medium access system unit are provided in the same space. In the device 45, the exterior panels 32a-3
A casing is composed of 2e and a casing bottom plate 31, and each unit is housed inside the casing. An intake port 50a is provided in the exterior panel 32a in the vicinity of the optical disk unit 37 so that the outside air is taken into the device. Meanwhile, exterior panels
Similar to the panel 32a, the reference numeral 32c has an intake port 50c and an exhaust fan 36 on the upper part. The rotation of the fan 36 takes in outside air from the intake ports 50a and 50c, cools each unit, and discharges it to the outside. . The unit includes a control unit 40a, 40b and a power supply unit 41 that house a printed board or the like for electronic operation, an access unit 38 that performs a mechanical operation, an optical disk unit 37, and a housing unit 39.
And are provided in the same space.

[Problems to be solved by the device]

The structure of the first conventional example described above has a drawback that at least two cooling fans are required for cooling the control unit 4 and the drive unit 3, resulting in high cost.

On the other hand, in the structure of the second conventional example, there is no problem even if there is only one cooling fan (exhaust fan), but the electronically operating unit and the mechanically operating unit are affected by electromagnetic noise. Can affect each other and cause disability.

Further, neither of them has taken any measures against airborne dust taken from the outside.

[Means for solving the problem]

The optical disk device of the present invention mainly comprises a drive area having a rotation mechanism for the medium and an optical access mechanism for the medium, a control area mainly having a printed wiring board for control, the drive area and the outside of the device. An intake port provided between and, an exhaust port provided between the control area and the outside of the device, a partition plate that partitions the drive area and the control area and has a ventilation port in a part thereof, It is composed of the intake port, the drive area, the ventilation port, the control area, the exhaust port, and a fan for flowing air.

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS. 1, 3, and 4. In the figure, the same components as those of the above-mentioned conventional example are designated by the same reference numerals, and the description thereof will be omitted.

First, the first embodiment will be described with reference to FIG.

The optical disk device 1 has a control area inside the housing, in which a printed wiring board 21 for controlling the device 1 is provided.
A partition plate 20 divides 24 and a drive area 23 that mainly performs mechanical operations for the medium 9. However, this partition plate 20 has a ventilation port near the front panel 2.
26 is provided, and the control area 24 and the drive area 23 communicate with each other spatially. Control area
24 is closed at the top and bottom by the cover 22 and the partition plate 20, and at the left and right by the shield plates 25a and 25b, and has a discharge port 27 open to the outside on the side opposite to the ventilation port 26. Similarly, the drive area 23 is also closed at the top, bottom, left and right, and is in contact with the outside air through the ventilation port 26 near the front panel 2 and the shield plate 25c on the opposite side of the front panel 2 via the cooling fan 16 and the air filter material 28. There is.

When the optical disk device 1 is powered on, the cooling fan 16 starts and rotates. By this cooling fan 16, the outside air passes through the air filter material 28 to remove dust, and is taken into the drive area 23. The taken-in air cools the mechanical section 8 and the like, and enters the control area 24 from the ventilation port 26. Here, the printed wiring board 21 is cooled and discharged from the discharge port 27 to the outside. The arrows in this figure indicate the flow of air when the cooling fan rotates 16 times.

As described above, in this embodiment, the control area 24 and the drive area 23 are connected to each other through the ventilation port 26, so that one fan can perform efficient cooling. In addition, an air filter is provided in the outside air intake portion, and the outside air is taken into the drive area where dust is most disliked. Further, since the ventilation port is opened at the upper part of the drive area, it is effective for discharging the heated air.

Next, a second embodiment will be described with reference to FIGS. 3 and 4. This is an application of the present invention to the collective type optical disk device described in the second conventional example. In this embodiment, a partition plate is provided between the power source control area 44 that performs an electrical operation and the drive area 43 that performs a mechanical operation inside the apparatus housing.
It is divided by 42. The partition plate 42 is provided with a ventilation path 34 near the exterior panel 32a, and connects the two areas. This partition plate has a shielding effect to protect each area from electromagnetic waves. The air flow during cooling is the same as in the first embodiment.

[Effect of device]

As described above, according to the present invention, a partition plate having a partial opening is provided in the inside of the device, and the outside air is allowed to pass through the partition plate inside the device by the fan, whereby efficient cooling can be performed with a simple structure. In addition, there is an effect that it is possible to provide an optical disk device that takes measures against noise and dust.

[Brief description of drawings]

1 is a schematic view showing a first embodiment of the present invention, FIG. 2 is a schematic view showing a first conventional example, FIG. 3 is a schematic view showing a second embodiment of the present invention, and FIG. FIG. 5 is a schematic sectional view taken along the line AA ′ in FIG. 3, FIG. 5 is a schematic view showing a second conventional example, and FIG. 6 is a schematic sectional view taken along the line BB ′ in FIG. Is. 1 ... Optical disk device, 16 ... Cooling fan, 20 ... Partition plate, 23 ... Drive area, 24 ... Control area, 26 ...
Ventilation port, 27 ... Ejection port.

Claims (2)

[Scope of utility model registration request] 1. An optical disk device capable of media conversion,
A drive area having a mechanism for rotating the medium and a mechanism for optically accessing the medium, a control area having a control printed wiring board, and the like are provided between the drive area and the outside of the apparatus. An intake port, an exhaust port provided between the control area and the outside of the apparatus, a metal partition plate that partitions the drive area and the control area and has a ventilation port in a part thereof, Intake port-The drive area-The ventilation port-
An optical disk device comprising: a fan for causing the control area to flow in the order of the discharge port. 2. The optical disk device according to claim 1, wherein an air filter is provided at the intake port so that the outside air is filtered before being taken into the device.