JPH0726999U - Internal cooling structure of recording device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a recording device with low noise, high cooling function, and dustproof function at low cost. [Structure] The outside air sucked from an intake port 17 by the operation of a fan 15 is introduced into a housing while preventing dust and dirt from reaching a substrate by a dustproof filter 14 near the intake hole. The sucked outside air is collected again by the fan 16 in the vicinity of the substrate, the flow velocity between the substrate and the casing is increased, and the heat in the casing 12 is absorbed while the exhaust port 1
It is discharged again from 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an internal cooling structure of an auxiliary recording device using a magneto-optical disk drive, FDD, or HDD used as an external recording device such as a personal computer or a word processor.

[0002]

[Prior art]

 For example, it is known that the characteristics of a recording device such as a magneto-optical disk device and a magneto-optical disk are deteriorated by heat or dust. In a device such as a magneto-optical disk device, where a highly concentrated circuit is mounted on a substrate, a large amount of heat is generated during operation. It keeps the operation and at the same time prevents the deterioration of the recording characteristics of the disc. A fan is generally used to introduce outside air from the outside of the equipment.A fan is installed near the intake hole to introduce the outside air by a fan, and the air taken in from the exhaust hole provided in the equipment casing is discharged. The method of doing was taken. At this time, an air filter (hereinafter referred to as “filter”) is installed near the fan to prevent dust or dirt from entering at the same time as the outside air.

FIG. 5 is a plan view showing the outline of a conventional device. Reference numeral 1 denotes a disk drive device, which can write to and read from the magneto-optical disk in this embodiment. A board (not shown) having a controller and the like is attached to the upper part, and is a part to which cooling air should be sent. The board is equipped with various circuits for driving, controlling, recording / reproducing, etc., and generates heat as it operates. Reference numeral 15 denotes a fan, which includes a motor, a rotary shaft, and the like, which are not shown in detail. 13 is a power supply.

When the disk drive device 1 is turned on, the fan 15 attached near the intake hole starts operating. The outside air taken into the device through the air intake holes 17 provided in the housing by the operation of the fan 15 flows through the housing while the dust contained in the outside air is prevented from entering by the filter 14, and is accompanied by the driving of the device. It absorbs the heat generated and is discharged from the equipment through the exhaust holes.

However, according to this method, the filter gradually becomes clogged with use, and resistance to the introduction of outside air into the device is generated, so that the amount of cooling air supplied to the device becomes insufficient. There was a problem.

Therefore, in order to secure a sufficient air volume for cooling the device, for example, a method of enlarging the outer shape of the fan or increasing the rotation speed of the fan motor has been considered. However, increasing the fan size leads to an increase in the size of the entire device and a rise in manufacturing costs. In addition, when the rotation speed of the fan motor is increased, the driving sound becomes louder than that of the low rotation speed, which deteriorates the usage environment for consumers. Other fans have been developed that are mechanically designed to generate a large amount of wind even if they are small, but this also leaves a problem in terms of manufacturing cost.

These inconveniences are caused by the fact that the fan is installed at a position away from the object to be cooled. The outside air taken in by the fan then spreads to the other and then flows, so it is not possible to use all the outside air taken in to cool the part to which the cooling air should be sent, and the cooling efficiency deteriorates. .

As a solution to this problem, the applicant tried to install a fan in the vicinity of the object to be cooled, but outside air entered even from a small opening provided in the housing as needed, and some outside air was trapped. Since it is introduced into the device without passing through the filter, dust and dirt contained in the outside air will also enter, causing a problem in dustproof performance.

[0009]

[Problems to be solved by the device]

 An object of the present application is to provide a device having high cooling performance and dustproof performance while having a simple and inexpensive mechanism.

[0010]

Therefore, the present invention is achieved by arranging at least one fan for introducing the outside air at least at two places near the intake hole and at least two fans near the cooling target.

[0011]

[Function of the device]

 The outside air sucked by the fan near the intake hole is collected again by the fan near the cooling target and blown against the cooling target, so that the cooling effect is high and the cooling effect is sufficient even with a small amount of outside air. Moreover, since the outside air is introduced through the filter, dust or dirt will not enter the device.

[0012]

【Example】

 An embodiment in which the present invention is applied to a magneto-optical disk drive will be described below with reference to FIG. For the reference numerals, the same members as those in the conventional example described above are given the same reference numerals for the sake of understanding.

In FIG. 1, reference numeral 1 denotes a disk drive device, which is capable of writing and reading with respect to a magneto-optical disk in this embodiment. A board with a controller, etc. is attached to the upper part, and it is a part that dislikes heat and temperature rise and is a part to which cooling air should be sent. Reference numeral 11 is a main body of the disk drive unit, which is provided with a substrate on which various circuits for driving, controlling, recording and reproducing various parts are mounted. In this embodiment, writing and reading can be performed on the magneto-optical disk. Reference numeral 12 denotes a housing having an intake port 17 and an exhaust port 18. 13 is a power supply. Reference numeral 14 is a dustproof filter, which is attached to the outside of the air intake hole attached to the housing and can be attached and detached depending on the degree of contamination. Reference numerals 15 and 16 denote fans, which may have a well-known configuration and include a housing, a motor, a rotary shaft, and blades, which are not shown in detail, and the fan 15 is provided in the vicinity of the wall surface of the device 1. And faces the outside through the filter 14. The fan 16 is arranged inside the apparatus so as to be in the vicinity of the object to be cooled. The apparatus using the embodiment of the present invention is constructed as described above.

The operation of the embodiment of the present invention will be described below. When power is supplied to the disk drive device 1, an operation confirmation mark is given to the user on the outer surface of the disk drive device 1, and at the same time, the fans 15 and 16 start operating. Further, the disk drive cartridge is mounted on the disk drive unit 11 from the outside of the disk drive device 1 by the operator's hand through the insertion port. The disk drive cartridge is equipped with a shutter that opens the recording opening so that the disk surface faces the recording head when mounted, and closes the opening again when ejected. At the same time, the mounted disk drive cartridge becomes rotatable by being attached or magnetically attracted to the spindle motor in the disk drive unit 11. When the disk drive device 1 is turned on, the power supply 13 is heated by the coil and the like included in the power supply 13 for performing AC / DC voltage conversion. At the same time, when the various circuits mounted on the board are energized and their functions start, heat begins to be generated like the coil. At the time of recording / reproducing, an electromagnetic actuator such as a step motor or a linear voice coil motor operates to perform a predetermined tracking operation of the recording head. Further, since it is magneto-optical recording, a coil for generating a predetermined bias magnetic field is generated. Even in a device using electricity or a permanent magnet, an electromagnetic actuator or the like that drives the device operates as necessary, but all of them are sources of heat generation.

The fan 15 introduces outside air through the intake hole of the device 1 and the filter 14. Subsequently, the fan 16, which is a source of heat and is arranged in the vicinity of the target portion requiring cooling, once again collects the outside air introduced by the fan 15 and sends the air to the target portion. With this configuration, the introduced outside air passing through the upper portion of the drive unit 11 and the heat generated from the substrate are exchanged.

2 and 3 show a second embodiment of the present invention, in which a fan near the substrate is attached at a slight angle. For example, if, for example, cables or the like are arranged between the fan and the substrate for the convenience of design, this may become an obstacle and the cooling air may be blocked by these and the sufficient cooling effect may not be exerted.

By applying the present embodiment to the apparatus, it is possible to sufficiently enhance the cooling effect even when an obstacle due to the air flow such as the cable is arranged. Of course, the placement angle needs to be changed to set an efficient numerical value as appropriate.

FIG. 4 shows a third embodiment of the apparatus, in which a duct is attached so as to cover the upper side of the fan and the opposite side surface of the housing. Since this duct only changes the flow path of air, it may be a simple one made by bending resin or the like. Further, the material to be used may be appropriately changed or the outer shape may be a tubular shape or a plate shape as long as it is a material that guides the flow by changing the duct and the air flow path.

For example, depending on the design of the device, when an obstacle such as a cable is arranged between the fan and the board, or a specific part or range on the board is particularly cooled, and a range (portion) that needs to be cooled is particularly required. In some cases, the cooling effect may not increase as expected. This is because the fan is designed to send the wind to the whole due to its structure. According to this embodiment, the cooling air from the fan can be directly applied to the substrate having a large heat generation through the duct, so that the required range on the substrate can be cooled more effectively.

[0020]

[Effect of device]

 According to the present application, a dramatic improvement in the cooling performance of the device is recognized. Furthermore, since the structure is simple, it is inexpensive, and since the rotation speed can be kept relatively low, a device with low noise can be realized. In addition, since the outside air is efficiently introduced by the fan, even if resistance to the flow of outside air is generated due to dirt on the filter, the outside air is sufficiently introduced into the device, and the frequency of filter replacement to suppress resistance is low. . As a result, the inside of the device is kept at an appropriate temperature and dust does not enter the device, so that the original writing and reading functions of the disk drive device are not deteriorated.

[0021]

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a plan view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is a plan view showing a third embodiment of the present invention.

FIG. 5 is a plan view showing a schematic arrangement in a conventional example.

[Explanation of symbols]

 1 Disk Drive Device 11 Disk Drive Unit 12 Case 13 Power Supply 14 Dust Filter 15 Fan 16 Fan 17 Intake Hole 18 Exhaust Hole 19 Cable 20 Duct

Claims (1)

[Scope of utility model registration request] 1. A housing provided with an air intake hole for housing a recording / reproducing drive, a motor fan for cooling the housing, an air filter for preventing dust from entering the drive, and an air intake port. A recording apparatus having the motor fan, wherein the motor fan is provided with at least one motor fan at each of at least two places near the air intake and the medium to be cooled.