JPH0620461A - Disk player - Google Patents

Abstract

PURPOSE:To efficiently cool exothermic parts by utilizing the air flow generated by rotation of a disk by providing the inner peripheral side and outer peripheral side of the partition body on the lower side of the disk with at least two air holes and guide holes communicating with these air holes. CONSTITUTION:The partition plate 9 provided below the disk 8 held on a turn table 7 is formed with the air holes 13, 14 on the inner peripheral side and outer peripheral side of the disk and is projectingly provided with guide members 17, 18 formed with guide holes 15, 16 communicating with the respective air holes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc player, for example, a disc player having a cooling structure for heat-generating components in a top loading type disc player or the like.

[0002]

2. Description of the Related Art Generally, in a disc player,
Disk motor, pickup drive motor, driver I
Various heat-generating components such as C and coils are provided, and conventionally, in order to cool the heat-generating components, a surface area of the heat-generating component is generally widened by using a radiation fin or the like.

[0003]

However, in such a conventional technique, since there is no air flow to the heat generating components in the case, efficient cooling cannot be performed,
There is a problem that the temperature of the heat-generating component becomes too high and the durability of the heat-generating component deteriorates.

The present invention has been made in view of such a conventional problem, and efficiently generates heat by providing two air holes in a partition on the lower side of the disk and utilizing the flow of air by the rotation of the disk. It is an object of the present invention to provide a disc player capable of cooling components.

[0005]

DISCLOSURE OF THE INVENTION According to the present invention, a partition body is formed on an upper part of a case in the vicinity of a lower side of a disk held by a turntable, and the partition body is provided on an inner peripheral side and an outer peripheral side of the disk. It is characterized in that it is provided with at least two air holes formed and a guide member formed with a guide hole that communicates with each air hole and faces the heating element in the case.

[0006]

In the present invention, due to the rotation of the disk, the air pressure between the lower surface of the disk and the partition plate increases on the outer peripheral side and decreases on the inner peripheral side. Therefore, the air on the lower surface of the disc is sucked out from the air holes on the inner circumference side and flows toward the air holes on the outer circumference side, and the air is discharged from the guide holes on the outer circumference side to the inside of the guide holes on the inner circumference side. Air is sucked in through the holes. As a result, an air flow is generated around the heat generating component.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of an essential part showing an embodiment of a disc player of the present invention, and FIG. 2 is a vertical sectional view of the same. First, the configuration will be described. As shown in FIG. 2, a printed circuit board (PCB) 2 is provided in the lower part of the case 1, and a heat generating component 3 which is a heat generating element such as an IC is mounted on the PCB 2.
A pickup 5, a disc motor 6, a turntable 7 and the like are attached to a chassis 4 provided in the upper part of the case 1, and a disc 8 is held on the turntable 7. A partition plate 9 as a partition is provided on the upper surface of the case 1.
A turntable 7 is formed in the center of the partition plate 9.
A circular hole 10 into which the circular hole 10 is inserted and a window portion 11 connected to the circular hole 10 are formed, and the pickup 5 is arranged below the window portion 11.

Air holes 13 and 14 are formed in the partition plate 9 close to the inner peripheral side and the lower peripheral side of the disk 8, respectively. At the bottom of each air hole 13 and 14, each air hole 1
Guide member 1 formed with guide holes 15 and 16 communicating with 3 and 14 and facing the heat-generating component 3 in the case 1.
7, 18 are projected downward.

Next, the operation will be described. When the disk 8 rotates, the peripheral speed is higher on the outer peripheral side between the inner peripheral side and the outer peripheral side of the disk.
The air pressure on the outer peripheral side is higher than that on the inner peripheral side. Therefore, as shown in FIG. 2, the air in the case 1 is sucked out from the guide hole 15 on the inner peripheral side, and the air passes from the air hole 13 through the gap 12 and the air hole 14 to the guide hole 16 on the outer peripheral side. The flow is such that it is discharged to the periphery of the heat generating component 3 inside. The heat generating component 3 is efficiently cooled by this air flow. By arranging the air holes 13 and 14, the guide holes 15 and 16 and the guide members 17 and 18 at a plurality of locations on the circumference of the partition plate 9, all heat generating components in the case,
For example, the disk motor 6, the drive motor of the pickup 5, the coils, etc. are efficiently cooled. Therefore, the temperature of the heat-generating component 3 is lowered, and the durability can be greatly improved.

[0010]

As described above, according to the present invention,
By providing an air hole located on the inner and outer peripheral sides of the disk and a guide hole communicating with this in the partition plate below the disk,
Airflow occurs in the case when the disc rotates, which can efficiently cool the heat-generating components in the case, improve the durability of the heat-generating components, and use the rotation of the disc, so special components for cooling and It does not require a device, can be made inexpensive,
Furthermore, the reliability of the parts can be greatly improved.

[Brief description of drawings]

FIG. 1 is a perspective view of essential parts showing an embodiment of a disc player according to the present invention.

2 is a cross-sectional view of the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 case 3 heat-generating parts 7 turntable 8 disk 9 partition plate 13 air hole 14 air hole 15 guide hole 16 guide hole 17 guide member 18 guide member

Claims (1)

[Claims] 1. A partition body formed in an upper part of a case in the vicinity of a lower side of a disk held on a turntable, and at least two air holes formed on an inner peripheral side and an outer peripheral side of the disk of the partition body. And a guide member formed with a guide hole communicating with each of the air holes and facing the heating element in the case.