JP4619406B2 - Disk unit - Google Patents

Description

  The present invention relates to a disk device, and more particularly to a disk device including a fan that circulates air between the inside of the disk device and the outside of the disk device.

  Conventionally, for example, Patent Document 1 discloses a disk apparatus that performs at least one of reproduction of information recorded on a disk such as a DVD (Digital Versatile Disc) and CD (Compact Disc) and recording of information on the disk. As shown, a fan is generally provided. This fan ventilates the inside of the disk device, that is, circulates air between the inside of the disk device and the outside of the disk device. Therefore, by operating this fan, air outside the disk device is sucked into the disk device, and the temperature rise inside the disk device can be suppressed.

  That is, the fan provided in the conventional disk device is for cooling the inside of the disk device. Here, the rotation direction and the number of rotations of this fan are controlled by a fan control device. This fan control device controls the fan so that the rotation speed is a constant rotation speed at which the inside of the disk device can be cooled or the rotation speed according to the temperature inside the disk device while maintaining the rotation direction in one direction.

JP 2004-39140 A

  By the way, depending on the disk device, it may be used in an area where dust such as dust or dust is floating in the air. In such an area, in order to suppress the intrusion of dust from the outside of the disk device into the disk device, the disk insertion opening for inserting the disk into the disk device is of an openable type. The disc insertion opening is configured to open only when the disc is inserted or removed. However, in such an area, dust or the like tends to adhere to the disk itself. Accordingly, there is a case where the disc with dust attached is inserted into the disc device through the opened disc insertion slot. When the inserted disc is clamped and the clamped disc is rotated by the disc device, dust attached to the disc is scattered inside the disc device.

  In addition, when air is sucked from the inside of the disk device to the outside of the disk device by the fan, the disk is inserted to insert the disk while the fan controller is operating to cool the inside of the disk device. When the insertion port is opened, there is a possibility that air in which dust is floating from the disk insertion port is introduced into the disk device due to a pressure difference between the outside of the disk device and the inside of the disk device.

  As described above, by repeatedly inserting the disk into the disk device, dust may accumulate inside the disk device. When dust accumulates inside the disk device, there is a risk that the dust will adhere to the pickup lens of the pickup that reads information recorded on the disk or writes information to the disk. If the pickup lens is dirty, there is a possibility that reading failure or writing failure due to the pickup may occur. As a result, there is a risk that the disk device may malfunction.

  An object of the present invention is to solve the above-described problem as an example, and an object of the present invention is to provide a disk device capable of suppressing the occurrence of malfunction due to the accumulation of dust inside the disk device.

  In order to solve the above-described problems and achieve the object, a disk device according to the present invention includes a disk device that clamps a disk inserted from a disk insertion slot and rotates the clamped disk. A fan that circulates air between the disk device and the outside of the disk device, a communication hole that communicates the inside of the disk device and the outside of the disk device, fan control means that controls at least the rotational speed of the fan, and the disk Dust accumulation amount acquisition means for acquiring a dust accumulation amount inside the apparatus, and the fan control means determines that the dust accumulation amount is equal to or greater than a predetermined accumulation amount by the dust accumulation amount acquisition means. Further, the number of revolutions is set to be equal to or greater than the number of revolutions at the time of discharge.

Further, the disk device according to the present invention includes an open / close detection unit that opens and closes a disk insertion port that is inserted into and removed from the disk device, an open / close detection unit that detects an open / closed state of the disk insertion port by the opening / closing unit, and the disk device. A fan that circulates air between the inside and the outside of the disk device, a communication hole that communicates the inside of the disk device and the outside of the disk device, and a fan control means that controls at least the rotational speed of the fan. And the fan control means sets the rotational speed to be equal to or higher than the rotational speed at the time of ejection when the opening / closing means detects that the disc insertion slot is in an open state.

  The disk device according to the present invention has an effect that it is possible to suppress the occurrence of malfunction due to the accumulation of dust inside the disk device.

  Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same. Here, in the following description, a disk device for a disk capable of reproducing or recording information by light such as DVD and CD will be described. However, the present invention is not limited to this, and a magnetic disk, optical disk, Any disk that can reproduce or record information by light or magnetism, such as a magnetic disk, can be targeted. Further, in the following description, a disk device for a vehicle in which only a portion where a disk insertion opening is formed will be described in the vehicle interior.

  FIG. 1 is a diagram illustrating a schematic configuration example of a disk device according to an embodiment. FIG. 2 is a diagram illustrating a configuration example of the fan control device. As shown in the figure, the disk device 1 contains a plurality of components including a fan 3 and a fan control device 4 in a housing 2, that is, in the disk device interior A. Here, as the components, for example, a loading device that transports a disk D inserted from a disk insertion port 22 described later to a clamp position, a turntable that clamps and rotates the disk D transported to the clamp position by the loading device, There is a pickup 5 (see FIG. 2) that reads information recorded on the disk D rotated by a turntable or writes information to the disk D.

  In the housing 2, a disk insertion port 22 is formed in an exposed portion 21 exposed in the vehicle interior B 1, which is the disk device exterior B. The disc insertion opening 22 is provided with an opening / closing door 23 as an opening / closing means. That is, the disc insertion opening 22 is configured to be openable. The opening / closing door 23 is opened when the disk D is inserted into the disk apparatus inside A or when the disk D inside the disk apparatus A is carried out into the room B1 which is the disk apparatus outside B, and the disk insertion port 22 is opened. Become. That is, the disc insertion opening 22 is opened when the disc is put in and out, and is closed except when the disc D is put in and out. The opening / closing of the open / close door 23 is performed, for example, by the user pressing a button at the time of opening / closing disposed on the exposed portion 21 so that the disc insertion opening 22 is opened until the end of inserting the disc D and the end of carrying out the disc. To do. The open / close door 23 is provided with an open / close sensor which is an open / close detection means for detecting the open / close of the open / close door 23, and an open / close signal based on the open / closed state of the open / close door 23 is output to the fan control device 4 described later. Is done.

In addition, communication holes 24 and 25 are formed in the housing 2 to communicate the inside and outside of the housing 2, that is, to communicate the disk device inside A and the disk device outside B. In this embodiment, the communication holes 24 and 25 are formed in the vicinity of the end portion on the exposed portion 21 side of both end portions of both side surfaces 26 and 27 orthogonal to the exposed portion 21. Here, since both side surfaces 26 and 27 of the housing 2 are located in a space B2 other than the vehicle interior B1 in the disk device exterior B, the communication holes 24 and 25 are space portions other than the vehicle interior B1. B2 and the disk device interior A are communicated. Here, in the space B2 other than the vehicle interior B1, there is less air circulation between the interior B1 or the outside of the vehicle (not shown), so that dust such as dust or dust is in the air compared to the interior B1 or the outside of the vehicle (not shown). The amount of floating is small.

The fan 3 circulates air between the disk device inside A and the disk device outside B. In this embodiment, the fan 3 is fixed to the back surface 28 facing the exposed portion 21 and allows air to pass between the space B2 other than the vehicle interior B1 and the disk device interior A. . The fan 3 is operated by a drive signal output from a fan control device 4 described later. Here, the fan 3 can arbitrarily change the rotation speed and the rotation direction by the drive signal. That is, the fan 3 can change the amount of air passing through the fan 3 and the direction of the passing air, that is, the direction of circulating air between the disk device inside A and the disk device outside B. For example, when the fan 3 rotates in one of the rotation directions, the air in the space B2 other than the vehicle interior B1 that is the disk apparatus exterior B is sucked into the disk apparatus interior A. On the other hand, when the fan 3 rotates in the other direction of the rotation direction, the air inside the disk device A is exhausted to the space B2 other than the vehicle interior B1 which is the disk device outside B.

  The disk control device 4 controls the rotation speed and rotation direction of the fan 3 and has at least functions as a fan control means, a dust accumulation amount acquisition means, and a disk detection means. Various input signals are input to the disk controller 4. Specifically, a read signal output when the pickup 5 reads information recorded on the disk D, an open / close signal based on the open / close state of the open / close door 23 detected by an open / close sensor (not shown), and detected by the temperature sensor 6. In addition, there is a temperature signal based on the temperature inside the disk device A. The disk control device 4 outputs various output signals based on these input signals and various data stored in the storage unit 43. Specifically, there is an output signal such as a drive signal for controlling the fan 3, that is, for controlling the rotation speed and rotation direction of the fan 3.

  The disk control device 4 includes an input / output port (I / O) 41 that inputs and outputs the input signal and output signal, a processing unit 42, and a storage unit 43 that stores various data. . The processing unit 42 includes a memory and a CPU (Central Processing Unit), and at least a dust accumulation amount acquisition unit 44 that is a dust accumulation amount acquisition unit, a disk detection unit 45 that is a disk detection unit, and a fan that is a fan control unit. It is comprised by the control part 46. FIG. The processing unit 42 may realize a control method for the fan 3 by loading a program based on the control method for the fan 3 into a memory and executing the program. The storage unit 43 is a non-volatile memory such as a flash memory, a volatile memory such as a ROM (Read Only Memory) or a volatile memory such as a RAM (Random Access Memory) that can be read and written. The memory can be configured by a combination of these. In this embodiment, the fan 3 control method is realized by the fan control device 4. However, the present invention is not limited to this, and the disk control for controlling the rotation of the turntable (not shown) and the drive control of the pickup 5 is performed. You may implement | achieve as a part of function of an apparatus.

  Next, a control method of the disk device 1 according to the embodiment, particularly, a control method of the fan 3 will be described. FIG. 3 is a diagram illustrating an operation flow of the fan control device according to the embodiment. FIG. 4 is a diagram showing the disk device during cooling. FIG. 5 is a diagram showing the disk device when the disk is inserted. In this embodiment, in this disk apparatus 1, when the inside of the disk apparatus A is cooled, the fan control device 4 changes the rotation direction of the fan 3 from the inside A of the disk apparatus to the outside B of the disk apparatus. The rotational speed is controlled to be constant at the normal rotational speed in the direction in which air is exhausted to the space B2 other than the above. Further, in this disk device 1, when the accumulation of dust inside the disk device A is suppressed, the fan control device 4 changes the rotation direction of the fan 3 from the space B2 other than the vehicle interior B1 outside the disk device to the disk device. The rotational speed is controlled to be equal to or higher than the discharge rotational speed in the direction in which air is taken into the interior A.

Here, the normal rotational speed refers to the rotational speed of the fan 3 that is activated by the drive signal output from the fan control device 4 when the inside of the disk device A needs to be cooled. On the other hand, the discharge rotational speed is a rotational speed that exceeds at least the normal rotational speed when cooling the disk device interior A. The discharge rotation speed is such that dust such as dust and dust inside the disk device A can be moved by the air flow circulated between the disk device inside A and the disk device outside B by the operated fan 3. Is a number. The discharge rpm, position and the fan 3 and the communication hole 24 and 25, is to vary the distance or the like between the fan 3 and the communication hole 24, 25.

The inventors tested the change due to the increase in the number of revolutions in the disk device 1 in which the normal number of revolutions of the fan 3 is 8000 rpm. In this test, a fan of 0.08 m ³ / min at 12 V and 8000 rpm was used, and JIS powder dust was used as dust. When the normal rotational speed of the fan 3 is 8000 rpm, the inside of the disk device A can be cooled, but it is difficult to move the dust inside the disk device A. Further, when the rotational speed of the fan 3 is 9800 rpm, the dust inside the disk device A can be moved by about 100 mm. Further, when the rotational speed of the fan 3 is 12000 rpm, the dust inside the disk device A can be moved by about 150 mm. Here, since the vehicle disk device 1 has a limited space in the vehicle, the external dimensions thereof are determined to some extent. If the dust inside the disk device A can be moved about 150 mm, the disk device external B It is thought that it can be discharged. Therefore, in the disk device 1 for a vehicle, it is preferable that the discharge rotational speed is about 12000 rpm.

  First, the disk detection unit 45 of the processing unit 42 of the fan control device 4 determines whether or not the disk D is being inserted into the disk device inside A from the disk insertion port 22 (step ST1). Specifically, an open / close signal based on the open / close state of the open / close door 23 output from an open / close sensor, which is an open / close detection means (not shown), is input to the disk detector 45. The disc detection unit 45 determines whether the open / close door 23 is open, that is, whether the disc insertion port 22 is open, based on the open / close signal.

  Next, when the disk detection unit 45 determines that the disk insertion slot 22 is open, the fan control unit 46 of the processing unit 42 determines whether or not the fan 3 is operating (step ST2). . That is, it is determined whether or not the fan 3 is operating to cool the disk device interior A.

Here, cooling of the disk device 1 by the fan control device 4 will be described. A temperature signal based on the temperature inside the disk device A output from the temperature sensor 6 is input to the fan control unit 46. The fan control unit 46 acquires the temperature inside the disk device A based on this temperature signal. The fan control unit 46 determines whether or not the acquired temperature is equal to or higher than a cooling temperature that requires cooling of the disk device interior A. If the fan control unit 46 determines that the acquired temperature is equal to or higher than the cooling temperature, the fan control unit 46 outputs a drive signal to the fan 3. . As shown in FIG. 5, the fan 3 is normally rotated in the direction in which air is exhausted from the inside A of the disk device to the space B2 other than the vehicle interior B1, which is the outside B of the disk device. Rotates constant by number. That is, the fan control device 4 exhausts air that is warmer than room temperature inside the disk device A from the fan 3. At this time, since a pressure difference is generated between the disk device inside A and the space B2 other than the vehicle interior B1 which is the disk device exterior B, the communication holes 24 and 25 allow the space B2 other than the vehicle interior B1. Room temperature air is inhaled. As a result, air warmer than room temperature is exhausted into the disk device interior A, and air at room temperature is sucked to cool the disk device 1.

  Next, when the fan control unit 46 of the processing unit 42 determines that the fan 3 is operating for cooling the disk device 1, the fan control unit 46 determines to reverse the rotation direction of the fan 3 (step ST3). In other words, the fan control unit 46 uses the fan 3 that is rotating in the direction in which air is exhausted from the disk device interior A to the space B2 other than the vehicle interior B1 that is the disk device exterior B. It is determined that the air is sucked into the disk device inside A from the space B2 other than the room B1.

Next, after determining the reversal of the rotation direction of the fan 3, the fan control unit 46 of the processing unit 42 determines to rotate the fan at a discharge rotational speed or higher and operates the fan 3 (step ST <b> 4). That is, when the fan 3 is in operation for cooling the disk device 1, the fan control unit 46 reverses the rotation direction of the fan 3 and sends a drive signal to the fan 3 that causes the rotation speed to be equal to or higher than the discharge rotation speed. Output. When the fan 3 is not operating for cooling the disk device 1, the fan control unit 46 determines that the rotation direction is from the space B 2 other than the vehicle interior B 1 that is the disk device exterior B to the disk device inside A. Then, a driving signal is output to the fan 3 so that the air is taken in and the rotational speed is equal to or higher than the discharge rotational speed.

  As shown in FIG. 4, the fan 3 is driven by these drive signals in the direction in which air is sucked into the disk device inside A from the space B2 other than the vehicle interior B1 which is the outside of the disk device B. Rotate. That is, the fan control device 4 sucks air into the disk device interior A when the disk D is inserted. The air sucked into the disk device interior A from the fan 3 flows through the disk device interior A toward the exposed portion 21 as indicated by the arrow in the disk device interior A in FIG. The air flowing toward the exposed portion 21 collides with a back surface (not shown) of the exposed portion 21, and most of the air is the outside B of the disk device through the communication holes 24 and 25 formed on both side surfaces 26 and 27 of the housing 2. Exhaust into a space B2 other than the vehicle interior B1. At this time, dust such as dust and dust adhering to the disc D is discharged to the outside B of the disc device through the communication holes 24 and 25 together with air colliding with the back surface (not shown) of the exposed portion 21. Therefore, even if the disc D to which dust is attached is inserted into the inside A of the disc device, the dust attached to the disc D can be discharged to the outside B of the disc device through the communication holes 24 and 25.

  A part of the air flowing toward the exposed portion 21 is discharged from the disc insertion opening 22. Accordingly, it is possible to prevent the air inside the vehicle room B1 from being sucked into the disk device inside A from the disk insertion port 22 in which the amount of dust floating is larger than the air in the space B2 other than the vehicle room B1. Can do. Accordingly, it is possible to suppress the accumulation of dust in the disk device interior A, and it is possible to suppress the malfunction of the disk device 1 due to the accumulation of dust.

  Next, the dust accumulation amount acquisition unit 44 of the processing unit 42 determines whether or not a read signal is output from the pickup 5 when the disc detection unit 45 determines that the disc insertion slot 22 is closed. (Step ST5). In other words, the dust accumulation amount acquisition unit 44 inserts the disk D into the disk device interior A, is clamped by a turntable (not shown), the clamped disk D is rotating, and the pickup 5 is stored in the disk D. It is determined whether or not a read signal output by reading the existing information is output. Here, when the dust accumulation amount acquisition unit 44 of the processing unit 42 determines that the read signal from the pickup 5 is not output, the steps ST1 and ST5 are repeated.

  Next, when the dust accumulation amount acquisition unit 44 of the processing unit 42 determines that the read signal from the pickup 5 is output, the signal output S, which is the magnitude of the read signal output from the pickup 5, is equal to or greater than the predetermined value S1. Is determined (step ST6). If dust such as dust or dust accumulates in the disk device inside A of the disk device 1, the dust may adhere to the pickup lens of the pickup 5. When dust adheres to the pickup lens, the signal output S of the read signal of information recorded on the disk D by the pickup 5 decreases. That is, the amount of dust accumulated in the disk device A is in accordance with the output of the read signal from the pickup 5, that is, the value of the signal output S. By determining whether or not the value is greater than or equal to a predetermined value S1, it is determined whether or not the amount of dust accumulated in the disk device A is greater than or equal to a predetermined amount. Accordingly, the dust accumulation amount acquisition unit 44 predicts the dust accumulation amount in the disk apparatus A from the signal output S of the read signal by the pickup 5. Here, when the dust accumulation amount acquisition unit 44 of the processing unit 42 determines that the signal output S is equal to or greater than the predetermined value S1, the steps ST1, ST5, and ST6 are repeated. The predetermined value S1 is a value larger than a value that makes it difficult for the disk device 1 to reproduce the information recorded on the disk D, that is, there is a possibility that reading failure by the pickup 5 may occur.

  Next, when the dust accumulation amount acquisition unit 44 determines that the signal output S is less than the predetermined value S1, the fan control unit 46 of the processing unit 42 determines whether the fan 3 is in operation as described above. Is determined (step ST2). That is, it is determined whether or not the fan 3 is operating to cool the disk device interior A. Next, when the fan control unit 46 of the processing unit 42 determines that the fan 3 is operating for cooling the disk device 1 as described above, the fan control unit 46 determines the reversal of the rotation direction of the fan 3 (step ST3). ). Next, after determining the reversal of the rotation direction of the fan 3, the fan control unit 46 of the processing unit 42 determines to rotate the fan at a discharge rotational speed or higher and operates the fan 3 (step ST <b> 4). When the fan 3 is not operating for cooling the disk device 1, the fan control unit 46 determines that the rotation direction is from the space B 2 other than the vehicle interior B 1 that is the disk device exterior B to the disk device inside A. Then, a driving signal is output to the fan 3 so that the air is taken in and the rotational speed is equal to or higher than the discharge rotational speed.

  As shown in FIG. 1, the fan 3 is driven by these drive signals at a discharge rotational speed or more in the direction in which air is sucked into the disk device inside A from the space B2 other than the vehicle interior B1 which is the disk device outside B. Rotate. That is, the fan control device 4 sucks air into the disk device interior A when the disk D rotates. Here, the air sucked into the disk device interior A is the air in the space B2 other than the vehicle interior B1. Accordingly, as described above, since the amount of dust present in the sucked air is smaller than when the air in the room B1 is sucked into the disk device interior A, the amount of dust accumulated in the disk device interior A is reduced. Can do.

  The air sucked into the disk device inside A from the fan 3 passes through the upper and lower surfaces of the rotating disk D, the turntable (not shown), the pickup 5 and the like as indicated by the arrows in the disk device inside A in FIG. It flows in the disk device interior A toward the exposed portion 21. At this time, the dust adhering to them separates from these by the flow of air and moves toward the exposed portion 21.

  The air flowing toward the exposed portion 21 collides with a back surface (not shown) of the exposed portion 21, and the interior of the vehicle, which is the outside B of the disk device, from the communication holes 24 and 25 formed on both side surfaces 26 and 27 of the housing 2. Exhaust into space B2 other than B1. At this time, the dust that has moved toward the exposed portion 21 together with the air flowing toward the exposed portion 21, together with the air that collided with the back surface (not shown) of the exposed portion 21, through the communication holes 24, 25. It is discharged to the outside B. Therefore, even if dust accumulates inside the disk device A, it can be discharged to the outside B of the disk device via the communication holes 24 and 25. In other words, since the dust accumulated in the disk device inside A can be discharged to the disk device outside B, it is possible to suppress the occurrence of malfunction due to dust accumulation.

Here, when the dust accumulation amount acquisition unit 44 determines that the read signal is output from the pickup 5, it is not at the time of inserting the disk D from the disk insertion port 22 into the disk device inside A, and therefore it is opened / closed. The door 23 is closed, and the disc insertion slot 22 is closed. Therefore, it is possible to suppress a part of the air flowing toward the exposed portion 21 from being released from the disc insertion opening 22 into the room B1 which is the outside of the disk device together with a part of the dust moved toward the exposed portion 21. Can do. As a result, it is possible to prevent the room B1 from being contaminated by dust accumulated in the disk device interior A.

  In the above-described embodiment, the dust accumulation amount acquisition unit 44 predicts the dust accumulation amount based on the signal output S of the pickup reading signal, but the present invention is not limited to this. For example, a deposition amount measuring sensor for measuring the amount of dust accumulated in the actual disk device A is provided, and it is determined whether or not the amount of dust measured by the deposition amount measuring sensor is equal to or greater than a predetermined amount of deposition. good. In addition, the dust accumulation amount acquisition unit 44 has reached the predetermined number of times of operation of the fan 3 or the number of operations of the disk device 1 (the number of times of turntable driving) counted by the counter unit provided in the fan control device 4. It may be determined whether or not. That is, the fan control device 4 may control the fan 3 to be equal to or higher than the discharge rotation speed at every predetermined time interval.

  Further, in the above embodiment, the fan control unit 46 sucks air into the disk device inside A according to the rotation direction of the fan 3 when the dust accumulated in the disk device inside A is discharged to the disk device outside B. However, the present invention is not limited to this, and may be the same direction as the rotation direction of the fan 3 when the disk device 1 is cooled, that is, the direction in which the fan 3 exhausts the air inside the disk device A. In this case, when the fan control unit 46 of the processing unit 42 determines that the fan 3 is operating for cooling the disk device 1, the fan control unit 46 does not determine the reversal of the rotation direction of the fan 3. Then, it is determined that the fan is rotated at the discharge rotational speed or more, and the fan 3 is operated. That is, when the fan 3 is operating for cooling the disk device 1, the fan control unit 46 does not reverse the rotation direction and increases the rotation speed from the normal rotation speed to the discharge rotation speed or more. Is output to the fan 3.

As described above, according to this embodiment, in the disk device 1 that clamps the disk D inserted from the disk insertion port 22 and rotates the clamped disk D, the disk device inside A and the disk device outside B A fan 3 that circulates air between them, communication holes 24 and 25 that communicate the disk device interior A and the disk device exterior B, a fan control unit 46 that controls at least the rotational speed of the fan 3, and a disk device interior A And a dust accumulation amount acquisition unit 44 for acquiring the amount of dust accumulation, and the fan control unit 46 causes the dust accumulation amount acquisition unit 44 to have a dust accumulation amount equal to or greater than a predetermined accumulation amount, that is, the signal output S is equal to or greater than a predetermined value S1. When it is determined that the rotational speed is determined, the rotational speed is controlled to be equal to or higher than the rotational speed during discharge. Accordingly, the dust accumulated in the disk device interior A moves together with the air flow in the disk device interior A by the fan 3, and when the rotation direction of the fan 3 is the direction to exhaust the air in the disk device interior A, the fan 3 is moved. through it, and if the rotation direction of the fan 3 is the direction of the intake air in the disk device inside a via the communication holes 24 and 25, it can be discharged to the disk device outside B. Thereby, the dust accumulated in the disk device inside A can be discharged to the disk device outside B, so that it is possible to suppress the occurrence of malfunction due to dust accumulation.

  Further, when the rotation speed of the fan 3 is equal to or higher than the discharge rotation speed, the inside A of the disk device can be cooled as in the case of the normal rotation speed.

Further, according to this embodiment, the opening / closing door 23 for opening / closing the disk insertion opening 22 for inserting / removing the disk D into / out of the disk apparatus, and the opening / closing sensor (not shown) for detecting the opening / closing state of the disk insertion opening 22 by the opening / closing door 23 The fan 3 that circulates air between the disk device inside A and the disk device outside B, the communication holes 24 and 25 that communicate the disk device inside A and the disk device outside B, and at least the rotational speed of the fan 3 A fan control unit 46 is provided, and the fan control unit 46 controls the rotational speed to be equal to or higher than the rotational speed at the time of ejection when the open / close sensor detects that the disc insertion slot 22 is open. Accordingly, dust such as dust and dust adhering to the disk D is separated from the disk D by the air flow inside the disk device A by the fan 3, and the rotation direction of the fan 3 exhausts the air inside the disk device A. , The fan 3 can be discharged to the outside of the disk device B via the fan 3 , and when the rotation direction of the fan 3 is the direction of sucking air into the inside of the disk device A, through the communication holes 24 and 25. . Thereby, even if the disk D to which dust is attached is inserted into the inside A of the disk device, the dust attached to the disk D can be discharged to the outside B of the disk device.

  As described above, the disk device according to the present invention is useful for a disk device including a fan that circulates air between the inside of the disk device and the outside of the disk device, and in particular, an operation by accumulation of dust inside the disk device. Suitable for suppressing the occurrence of defects.

FIG. 1 is a diagram illustrating a schematic configuration example of a disk device according to an embodiment. FIG. 2 is a diagram illustrating a configuration example of the fan control device. FIG. 3 is a diagram illustrating an operation flow of the fan control device. FIG. 4 is a diagram showing the disk device during cooling. FIG. 5 is a diagram showing the disk device when the disk is inserted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disc apparatus 2 Housing | casing 21 Exposed part 22 Disc insertion port 23 Opening / closing door 24,25 Communication hole 26,27 Side surface 28 Back surface 3 Fan 4 Fan control device 41 Input / output port 42 Processing part 43 Storage part 44 Dust accumulation amount acquisition part ( Waste accumulation acquisition means)
45 Disc detection unit (disc detection means)
46 Fan control unit (fan control means)
5 Pickup 6 Temperature sensor A Inside the disk unit B Outside the disk unit

Claims (5)

In the disk device that clamps the disk inserted from the disk insertion port and rotates the clamped disk,
A fan that circulates air between the inside of the disk device and the outside of the disk device;
A communication hole for communicating the inside of the disk device and the outside of the disk device;
Fan control means for controlling at least the rotational speed of the fan;
Waste accumulation amount acquisition means for acquiring the amount of dust accumulation inside the disk device;
And the fan control means sets the rotational speed to be equal to or higher than the rotational speed during discharge when the dust accumulation amount obtaining means determines that the dust accumulation amount is equal to or greater than a predetermined accumulation amount. Disk unit to be used.   The fan control unit controls the rotation direction of the fan, and when the dust accumulation amount acquisition unit determines that the dust accumulation amount exceeds a predetermined accumulation amount, the fan control unit determines the rotation direction of the fan from the outside of the disk device. The disk apparatus according to claim 1, wherein the air is taken in the disk apparatus. The fan control means has disk detection means for detecting whether or not the disk is inserted from at least the disk insertion slot, and when the disk detection means detects that the disk is being inserted. The rotation direction of the fan is a direction in which the air is sucked into the disk device from the outside of the disk device, and the rotation speed is equal to or higher than the rotation speed at the time of discharge. Disk unit.   The disk device according to claim 1, wherein the disk insertion slot is in a closed state except when the disk is inserted and removed. Opening and closing means for opening and closing a disk insertion port for inserting and removing the disk into and out of the disk device;
Open / close detecting means for detecting an open / closed state of the disc insertion slot by the open / close means;
A fan that circulates air between the inside of the disk device and the outside of the disk device;
A communication hole for communicating the inside of the disk device and the outside of the disk device;
Fan control means for controlling at least the rotational speed of the fan;
And the fan control means sets the rotational speed to be equal to or higher than the rotational speed at ejection when the open / close detection means detects that the disk insertion port is in an open state.

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