JPH08339678A - Cooling method in disk reproducing apparatus - Google Patents

Abstract

PURPOSE: To obtain a cooling method in a disk reproducing apparatus which can obtain a sufficient cooling effect even when the disk reproducing apparatus is miniaturized. CONSTITUTION: A slit hole 13a is formed in the outer circumferential face of a tray 13 at a disk reproducing apparatus. An air current which is generated due to the rotation of a disk 14 which is started simultaneously with the operation of the disk reproducing apparatus is guided to the slit hole 13a, and a heat generating component which is attached at the inside of the tray 13 is cooled. In addition, an air discharge hole is made in the base part of the tray to smoother the air flows.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling method for a disc reproducing apparatus for cooling heat-generating components in the disc reproducing apparatus.

[0002]

2. Description of the Related Art FIG. 5 is a perspective view showing the internal structure of a conventional disc reproducing apparatus. In FIG. 5, 100 is a main body chassis of the disc reproducing apparatus, 101 is a motor serving as a power source for ejecting and storing the tray 103 from the main body chassis 100, 102 is an operation of the tray 103, and a light arranged in the main body chassis 100. A gear that transmits power generated by the motor 101 that moves the position of the pickup 105, 103 is a tray on which a disc 104 is placed,
Reference numeral 105 is an optical pickup for reading the data of the disc 104, 106 is a lifter for moving the optical pickup 105 up and down to a predetermined position, 107 is a clamper for closely fixing the disc 104 to the optical pickup 105, and 108 is for moving the tray 103 or a lifter. A cam gear for driving 106, 109 an electric board provided with a circuit for controlling the disc reproducing apparatus, and 110 a main body chassis 10
A cover for covering the components mounted on the electric board 109 from the motor 101 attached to 0, 111 is an eject button for instructing the ejection / storage of the tray 103, and is connected to the electric board 109.

Next, the discharging operation of the tray 103 of the disc reproducing apparatus will be described. When the operator presses the eject button 111 attached to the main body chassis 100, the ejection instruction of the tray 103 is given to the motor 101 by the electric board 109.
And the motor 101 starts operating. With the operation of the motor 101, the power of the motor 101 is increased by the gear 1
02 to the cam gear 108, and the tray 10
3 is transmitted to the rack gear, and from the state shown in FIG. 6 to the tray 1 from the main body chassis 100 as shown in FIG.
03 is discharged. Then, the operator of the disc reproducing apparatus places the disc 104 on the tray 103 ejected from the main body chassis 100. Disc 104 is tray 10
When the eject button 111 is pressed again in the state of being mounted on the sheet No. 3, the electric board 109 transmits the storage instruction of the tray 103 to the motor 101, and the gear 102 and the cam gear 108.
By this operation, the tray 103 is housed in the main body chassis 100 from the state of FIG. 7 as shown in FIG.

Here, a conventional method for cooling the disc reproducing apparatus will be described. When the disc reproducing device is put into the reproducing state while the disc 104 is housed inside the disc reproducing device by the ejection operation of the tray 103, the disc 104 starts to rotate by the spindle attached to the optical pickup 105. Here, the spindle attached to the pickup 105 and the electric board 1
In cooling the 09, with respect to the spindle, the heat dissipation is promoted by the slit holes provided in the tray 103, and the electric board 109 has a large heat dissipation area in a permissible range made of copper or the like having a high heat conduction effect. Was using the heat sink of.

[0005]

However, in the cooling method as described above, the entire structure of the disk reproducing apparatus is currently downsized as the tendency of the disk reproducing apparatus products, and the tray itself which is a structural component of the disk reproducing apparatus is also thinned. However, due to the progress of miniaturization, there is a problem that it is not possible to obtain a sufficient cooling effect due to problems such as reduction of heat dissipation space, high heat generation of electric parts, and inability to attach heat dissipation parts due to space restrictions. was there. As a result, thermal destruction of the electric components occurs due to heat, and the heat problem in the disk reproducing device is getting serious.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cooling method in a disc reproducing apparatus which can obtain a sufficient cooling effect even if the disc reproducing apparatus is downsized.

[0007]

DISCLOSURE OF THE INVENTION In a disc reproducing apparatus of the present invention, a slit hole is provided along a disc outer peripheral portion of a tray on which a disc is placed, and the disc upper surface is generated by the rotation of the disc simultaneously with the operation of the disc reproducing apparatus. Is used to guide the generated air flow to the slit holes provided on the outer periphery of the disc, and the air flow is attached to the electrical board mounted inside the tray and the optical pickup that rotates the disc. It is characterized in that the heat-generating component is cooled by passing it near the heat-generating component such as the spindle component.

[0008]

In the above structure, by utilizing the flow of air generated by the rotation of the disc, the substrate mounted inside the tray member of the disc reproducing device can be compared with the conventional disc reproducing device by natural heat dissipation. It efficiently cools heat-generating components. Further, unlike the conventional disc reproducing apparatus, it is not necessary to install a large number of slit holes to add a heat-dissipating component such as a heat sink and a small fan in order to improve the heat dissipation effect, so that the outer size of the disc reproducing apparatus is increased. Without heat radiation.

[0009]

1 is a perspective view showing the internal structure of a disk reproducing apparatus according to an embodiment of the present invention. In FIG. 1, 10 is a main body chassis of the disc reproducing apparatus, 11 is a motor serving as a power source for ejecting / storing the tray 13 from the main body chassis 10, and 12 is operating the tray 13.
A motor for moving the position of the optical pickup 15 arranged in the main body chassis 10, a gear for transmitting the power generated from 11, a disc 14 mounted on the disc 13, and a slit hole 13a provided in the outer peripheral surface portion of the disc 14. Tray 14 is a disc mounted on the tray 13, 15 is an optical pickup for reading data from the disc 14, 16 is a lifter for moving the optical pickup 15 to a predetermined position, and 17 is a disc 14 which is in close contact with the optical pickup 15. A clamper for fixing, 18 is a cam gear for moving the tray 13 and driving the lifter 16, 19 is an electric board provided with a circuit for controlling the disc reproducing apparatus, 2
Reference numeral 0 is a cover for covering the components mounted on the electric board 19 from the motor 11 attached to the main body chassis 10, 21 is an eject button connected to the electric board 19 to instruct ejection / storage of the tray 13, and 22 is a main body. It is a bottom cover that protects the electric board 19 attached to the back surface of the chassis 10.

Here, a cooling procedure of the disk reproducing apparatus in the embodiment will be described. Tray 1 as shown in FIG.
Slit hole 1 serving as an air inlet on the outer peripheral surface of the disk 3
3a is provided. Further, as shown in FIG. 3, the bottom surface of the bottom cover 22 is provided with a large number of ventilation holes 22a serving as air outlets.

Next, the flow of air in the disc reproducing apparatus will be described with reference to FIGS. 2 and 4. In the disc reproducing apparatus, when the disc 14 starts to rotate, an air flow is generated on the upper surface of the disc 14 toward the outer peripheral direction of the disc as shown by an arrow, as shown in FIG. Then, the air flow generated by the disk 14 passes through the slit holes 13a provided in the tray 13 and enters the inside of the tray 13 to reach the electric board 19 and the spindle attached to the inside of the tray 13. The substrate 19 and the spindle are cooled. Furthermore, in order to smooth the flow of air generated by the rotation of the disk 14,
The air used for cooling the electric board 19 and the spindle component is discharged from the ventilation hole 22a provided in the bottom cover 22 to improve the escape of the air used for cooling. In this way, the slit holes 13a and the ventilation holes 22a are provided to ensure the air flow path and prevent the air from staying inside the tray 13, thereby sufficiently cooling the heat generating parts such as the electric board 19 and the spindle parts. be able to.

[0012]

According to the present invention, a high cooling effect can be obtained by sending the air flow generated by the rotation of the disk to the heat generating components existing in the tray. Also, by providing an air outlet in addition to the air inlet provided in the tray, a sufficient air flow path is secured, air retention is prevented in the tray, and a reduction in air heat dissipation effect is suppressed. Is what you can do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an internal structure of a disc reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is an operation explanatory diagram of the disc reproducing apparatus in the embodiment of the present invention.

FIG. 3 is a perspective view of a bottom cover according to an embodiment of the present invention.

FIG. 4 is an operation explanatory diagram of the disc reproducing apparatus in the embodiment of the present invention.

FIG. 5 is a perspective view showing the internal structure of a conventional disc reproducing apparatus.

FIG. 6 is an operation explanatory diagram of a conventional disc reproducing apparatus.

FIG. 7 is an operation explanatory diagram of a conventional disc reproducing apparatus.

[Explanation of symbols]

 13 Tray 13a Slit Hole 14 Disc 15 Optical Pickup 19 Electrical Board 22 Bottom Cover 22a Ventilation Hole

Claims (2)

[Claims] 1. A slit hole is provided along the outer peripheral portion of a disc on which a disc is placed, and the air flow on the upper surface of the disc generated by the rotation of the disc at the same time as the operation of the disc reproducing apparatus is utilized to generate the generated air. The flow is guided to the slit holes provided on the outer periphery of the disc, and the air flow is passed near the electric board mounted inside the tray and the heat generating parts such as the spindle parts installed in the optical pickup that rotates the disk. A cooling method in a disc reproducing apparatus, characterized in that the heat generating component is cooled. 2. A cooling method in a disk reproducing apparatus according to claim 1, wherein an air discharge hole is provided in a lower surface portion of the tray.