JP2006024242A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the cooling mechanism of a disk device capable of effectively cooling internal components while preventing the intrusion of dusts into a case and the leakage of noise to the outside without limiting the layout designing freedom of the internal components. <P>SOLUTION: The disk device 100A is provided with a disk tray 20 having a disk mounting part 20b for mounting a disk, a case 10 having a tray outlet capable of inserting/ejecting the disk tray 20, and a tray conveying mechanism for moving the disk tray 20 between disk loading and unloading positions through the tray outlet. The disk tray 20 has an external air ventilation path therein to vent only external air positioned outside the case 10 in a state that the disk tray 20 is in the loading position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk device, and more specifically to a disk device including a cooling mechanism that cools a heat-generating component installed inside a housing.

  2. Description of the Related Art Conventionally, as a device for reproducing information recorded on a disc-shaped recording medium (hereinafter also simply referred to as a disc) represented by a DVD (Digital Versatile Disc) or recording information on a disc-shaped recording medium, a disc The device is widely used. Inside the disk device, there are various motors such as a motor for rotating a disk-shaped recording medium at high speed, a motor for driving a pickup, a drive circuit for driving these motors, a pickup for recording, reproduction, and erasing. Many electronic components are arranged.

  All of these electronic components are heat-generating components, and when the disk device is continuously operated for a long time, there is a concern that heat is trapped inside the housing, leading to performance deterioration and failure. In particular, in a DVD drive that uses a DVD that is commonly used in recent years as a disc, it is necessary to rotate the disc at a higher speed than a conventionally used CD (Compact Disc) or the like. Since the energy of the laser beam used for reproduction or the like is larger than the conventional one, cooling of these heat generating components is indispensable.

  As a cooling mechanism for cooling the heat-generating component, various structures are known. For example, Japanese Patent Application Laid-Open No. 2000-163948 (Patent Document 1) includes an intake port that takes in outside air into a housing, and the outside air introduced from the intake port, along with the air flow generated in the disk rotation space by the rotation of the disk, A cooling mechanism configured to exhaust outside the disk rotation space is disclosed. Japanese Patent Laid-Open No. 8-339678 (Patent Document 2) provides a slit hole on the outer peripheral surface of the disk mounting portion of the disk tray, and guides the air flow generated by the rotation of the disk to the slit hole. The cooling mechanism of the structure sprayed on the heat-emitting component arrange | positioned at the lower part of this is disclosed.

  However, when a cooling mechanism such as that disclosed in Patent Document 1 or 2 is adopted, the outside air introduced into the housing is directly blown onto the disk and the heat generating component, so that dust contained in the outside air A problem occurs that adheres to heat-generating components and causes failure. In addition, because the housing is provided with an air intake / exhaust port for taking in and exhausting outside air, wind noise and motor drive sound generated by rotating the disk at high speed leak directly to the outside of the housing. This may cause discomfort to the user.

  Therefore, in the disk apparatus disclosed in Japanese Patent Application Laid-Open No. 2003-100069 (Patent Document 3) and Japanese Patent Application Laid-Open No. 10-31678 (Patent Document 4), a machine room in which various heat generating components are arranged and a disk is loaded. The interior of the housing is partitioned into an air passage chamber that is located below the machine room and allows the outside air to pass through, and various heat-generating components are arranged in the machine room so as to face the air passage chamber, thereby preventing dust from entering the machine room. The heat generating component can be cooled while preventing intrusion and leakage of noise generated in the machine room to the outside.

However, when the cooling mechanism as disclosed in Patent Document 3 or 4 is adopted, it is necessary to separately form an air channel chamber in the housing in addition to the machine room, and the disk device is larger than necessary. There is a problem that becomes. Further, in order to efficiently cool the heat generating component, a certain restriction is imposed on the layout of the heat generating component, which causes a problem that the degree of design freedom is greatly impaired.
JP 2000-163948 A JP-A-8-339678 Japanese Patent Laid-Open No. 2003-100069 Japanese Patent Laid-Open No. 10-312678

  Accordingly, the present invention has been made to solve the above-described problems, and the object of the present invention is to intrude dust into the housing without obstructing the design freedom of the layout of internal components. Another object of the present invention is to provide a cooling mechanism for a disk device capable of effectively cooling internal components while preventing leakage of noise to the outside.

  A disc device according to a first aspect of the present invention includes a disc tray having a disc placement portion on which a disc-shaped recording medium is placed, a casing having a tray entrance through which the disc tray can enter and exit, and the tray entrance / exit And a tray transport mechanism for moving the disk tray between a loading position and an unloading position. The disk tray includes a metal hollow molded body that includes an air passage for the outside air that allows only the outside air that is located outside the housing to flow in at least the disk tray in the loading position, and the metal hollow It is attached so as to cover the upper part of the molded body, has the disk mounting portion on the upper surface, and is positioned inside the housing between the hollow molded body and at least the disk tray in the loading position. And a resin tray cover that forms a ventilation path for the inside air through which only the inside air is ventilated. In addition, the disk device further includes a blowing unit that promotes the flow of the outside air that passes through the outside air ventilation path, and a blowing unit that promotes the flow of the inside air that passes through the inside air ventilation path. And it is comprised so that the inside air which passed the said inside air ventilation path may be sprayed on the pick-up arrange | positioned inside the said housing | casing.

  By configuring in this way, it becomes possible to exchange heat between the inside air and the outside air via the disc tray while maintaining the airtightness of the internal space of the housing in the state where the disc tray is in the loading position. The heated inside air is cooled by the outside air, and the heat generating components are cooled by the cooled inside air. Therefore, it is possible to effectively cool the internal components while preventing the intrusion of dust and the leakage of noise to the outside without impeding the design freedom of the layout of the internal components. become.

  In addition, while the disk mounting portion on which the disk is mounted is made of resin, the partition between the inside air ventilation path and the outside air ventilation path that intervenes heat exchange between the inside air and the outside air is made of metal. It is possible to perform heat exchange between the inside air and the outside air with high efficiency while preventing the information recording surface from being damaged.

  Furthermore, since it becomes possible to effectively cool a pickup that is particularly susceptible to heat, it is possible to prevent malfunctions such as read / write errors.

  A disc device according to a second aspect of the present invention includes a disc tray having a disc placement portion on which a disc-shaped recording medium is placed, a casing having a tray entrance through which the disc tray can enter and exit, and the tray entrance / exit And a tray transport mechanism for moving the disk tray between a loading position and an unloading position. The disc tray has an outside air ventilation path for allowing only the outside air located outside the housing to pass through at least in a state where the disc tray is at the loading position.

  By configuring in this way, it becomes possible to exchange heat between the inside air and the outside air via the disc tray while maintaining the airtightness of the internal space of the housing in the state where the disc tray is in the loading position. The heated inside air is cooled by the outside air, and the heat generating components are cooled by the cooled inside air. Therefore, it is possible to effectively cool the internal components while preventing the intrusion of dust and the leakage of noise to the outside without impeding the design freedom of the layout of the internal components. become.

  The disk device according to the second aspect of the present invention preferably further includes a blowing means for promoting the flow of the outside air passing through the outside air ventilation path.

  By comprising in this way, since the flow of external air is accelerated | stimulated, it becomes possible to cool an internal component more effectively.

  In the disk device according to the second aspect of the present invention, an internal air ventilation path for passing only the internal air located inside the housing is provided in the disk tray at least in the loading position. It is preferable to further have.

  With this configuration, heat exchange between the inside air and the outside air is promoted, so that the internal components can be cooled more effectively.

  The disk device according to the second aspect of the present invention preferably further includes a blowing means for promoting the flow of the inside air passing through the inside air ventilation path.

  By comprising in this way, since the flow of internal air is accelerated | stimulated, it becomes possible to cool an internal component more effectively.

  In the disk device according to the second aspect of the present invention, it is preferable that the outside air ventilation path and the inside air ventilation path are arranged in parallel at least in part inside the disk tray. In this case, it is preferable that the flow direction of the outside air and the flow direction of the inside air on the surface of the partition wall that separates the outside air passage and the inside air passage are at least partially opposite to each other.

  With this configuration, the efficiency of heat exchange between the inside air and the outside air is improved, so that the internal components can be cooled more effectively.

  In the disk device according to the second aspect of the present invention, an internal air exhaust port that discharges the internal air that has passed through the internal air ventilation path to the inside of the housing is provided in the pickup disposed inside the housing. Preferably facing.

  With this configuration, it becomes possible to effectively cool a pickup that is particularly susceptible to heat, and thus it is possible to prevent malfunctions such as read / write errors.

  In the disk device according to the second aspect of the present invention, the surface of the disk mounting portion is preferably formed of a resin material.

  Since the disc mounting portion of the disc tray that comes into contact with the disc is made of resin in this manner, the information recording surface of the disc is prevented from being damaged, so that malfunctions such as read / write errors are prevented. It becomes possible.

  In the disk device according to the second aspect of the present invention, the disk tray covers the metal hollow molded body including the outside air ventilation path and the upper part of the metal hollow molded body. It is preferable to include a resin tray cover which is attached and has the disk mounting portion on the upper surface and forms the inside air ventilation path with the hollow molded body.

  In this way, the partition between the inside air ventilation path and the outside air ventilation path that intervenes heat exchange between the inside air and the outside air is made of metal while the disk mounting portion on which the disk is placed is made of resin. Thus, heat exchange between the inside air and the outside air can be performed with high efficiency while preventing the information recording surface of the disk from being damaged.

  In the disk device according to the second aspect of the present invention, the casing introduces an outside air inlet for introducing outside air located outside the casing into the outside air ventilation path, and the outside air ventilation path. An outside air exhaust port for discharging outside air that has passed through the housing to the outside of the housing. In this case, in the state where the disk tray is in the loading position, the outside air intake port and the outside air ventilation path Are preferably connected in an airtight manner, and the outside air exhaust port and the outside air ventilation path are preferably connected in an airtight manner.

  By configuring in this way, at least in the state where the disc tray is in the loading position, it is reliably prevented that the inside air and the outside air are mixed, so that the intrusion of dust into the housing is surely prevented. become. In addition, since the airtightness of the internal space is reliably ensured, leakage of noise to the outside can be reliably suppressed.

  In the disk device according to the second aspect of the present invention, the casing introduces an outside air inlet for introducing outside air located outside the casing into the outside air ventilation path, and the outside air ventilation path. It is preferable that an outside air exhaust port for discharging outside air that has passed through the outside of the housing is included. In this case, the outside air inlet port and the outside air ventilation path are airtightly connected by a flexible tube. In addition, it is preferable that the outside air exhaust port and the outside air ventilation path are hermetically connected by a flexible tube.

  With this configuration, the inside air and the outside air can be reliably prevented from being always mixed regardless of whether the disc tray is in the loading position or the unloading position. Intrusion of dust is reliably prevented. Moreover, since the airtightness of the internal space is reliably ensured, leakage of noise to the outside can be reliably suppressed.

  According to the present invention, the internal design components can be effectively cooled while preventing the intrusion of dust and the leakage of noise to the outside without impeding the design freedom of the layout of the internal components. It becomes possible to do.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is an external view of a disk device according to Embodiment 1 of the present invention as viewed from diagonally upward on the front side, and FIG. 2 is an external view when viewed from diagonally upward on the back side. 3 is a plan view showing the structure of the disc tray in the disc apparatus shown in FIGS. 1 and 2, and FIG. 4 is a cross-sectional view of the disc tray taken along line IV-IV in FIG. 5 and 6 are schematic sectional views showing the internal structure of the disk device shown in FIGS. 1 and 2, and FIG. 5 is a view showing a state in which the disk tray is slightly pulled out from the loading position. 6 is a diagram showing a state in which the disc tray is at the loading position.

  First, the overall structure of the disk device 100A in the present embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 2, the disk device 100A according to the present embodiment includes a box-shaped housing 10 having a tray entrance 10a on the front surface, and a chassis 30 (see FIG. 5) disposed inside the housing 10. And a disc tray 20 that is movably supported by the chassis 30. The disk tray 20 is driven by a tray transport mechanism 40 (see FIGS. 5 and 6) disposed inside the housing 10, and is loaded and unloaded through a tray entrance 10 a provided on the front surface of the housing 10. Move between.

  For loading of the disk 60 into the disk device 100A, the disk 60 is set on the disk mounting portion 20b of the disk tray 20 pulled out of the casing 10, and the disk tray 20 is inserted into the casing 10 using the tray transport mechanism 40. It is done by housing inside. FIG. 1 shows a state in which the disc tray 20 is located at an unloading position where the disc 60 can be attached and detached. In this state, the disc tray 20 is a tray inlet / outlet formed in the housing 10. It partially protrudes forward from 10a.

  Next, the structure of the disc tray 20 will be described in detail with reference to FIGS. The disc tray 20 has an opening 20a at the center thereof. The opening 20 a is an opening provided so that the turntable can be moved up and down in a state where the disk tray 20 is accommodated in the housing 10 and disposed at the loading position. It is also an opening for irradiating the information recording track of the disk 60 with laser light emitted from the lens 51. As the turntable rises through the opening 20a, the disk 60 set on the disk mounting portion 20b of the disk tray 20 is pushed up to the chucking position. In this state, the opening 20a described above is pushed. Information is reproduced, recorded, and erased by irradiating the information recording track of the disk 60 with a laser beam through.

  As described above, the disc tray 20 is provided with the disc mounting portion 20b. The disc mounting portion 20 b is formed by providing a recess on the surface of the disc tray 20. A decorative plate 20 c is attached to the front end of the disc tray 20. The decorative plate 20c closes the tray entrance 10a provided on the front surface of the housing 10 in a state where the disk tray 20 is accommodated in the housing 10 and disposed at the loading position.

  A guide rail 21 is provided at the end of the disc tray 20 in the left-right direction. The guide rail 21 is formed so as to protrude outward from the side end of the disk tray 20, and is supported by being sandwiched from above and below by a support portion 31 (see FIGS. 5 and 6) provided in the chassis 30. It is a part to be done. Further, a stopper piece 23 is provided at the rear portion of the side end of the disc tray 20 so as to protrude outward. The stopper piece 23 functions to prevent the disk tray 20 from falling off the chassis 30 by abutting against a stopper portion 32 (see FIGS. 5 and 6) provided on the chassis 30.

  A rack 22 is provided on the lower surface of the disk tray 20. The rack 22 is linearly provided in the front-rear direction of the disk tray 20, and includes a motor 41, a belt 42, relay gears 43 and 44, a tray gear 45, and a slider 46 (see FIGS. 5 and 6) that constitute the tray transport mechanism 40. ) Is engaged with the tray gear 45. Thereby, the disk tray 20 moves in the front-rear direction by the motor 41 operating.

  As shown in FIGS. 3 and 4, an outside air ventilation path 25 is formed inside the disk tray 20. The outside air ventilation path 25 communicates with a tray-side connection end 24a provided on the right side of the rear end face of the disc tray 20, and also communicates with a tray-side connection end 24b provided on the left side of the rear end face of the disc tray 20. Further, the outside air ventilation path 25 is disposed so as to surround an opening 20 a provided in the disc tray 20. Note that the outside air ventilation path 25 is an air flow path that allows only outside air located outside the housing 10 to flow when the disk tray 20 is in the loading position.

  The disc tray 20 having the above-described structure is manufactured using a resin material such as ABS (acrylonitrile-butadiene-styrene) resin as a raw material. Thus, by forming the disc tray 20 with a resin material, the surface of the disc mounting portion 20b is also made of resin, and even if the disc 60 is repeatedly attached and detached, the information recording surface of the disc 60 is prevented from being damaged. It becomes like this. For this reason, it is possible to prevent malfunctions such as reading errors and writing errors.

  Next, with reference to FIG. 5 and FIG. 6, the internal structure of the disk device 100A in the present embodiment will be described. As described above, the chassis 30 is disposed inside the housing 10, and the disk tray 20 is movably supported by the chassis 30. Further, as described above, the tray transport mechanism 40 is disposed in the front portion inside the housing 10, and the disk tray 20 is driven in the front-rear direction by the tray transport mechanism 40, so that the loading position and the unloading position are set. Move between. A pickup 50 is arranged at a predetermined position inside the housing 10. A pickup lens 51 for emitting laser light is attached to the upper surface of the pickup 50.

  An outside air intake port 11 a and an outside air exhaust port 11 b are provided on the back surface of the housing 10. The outside air intake port 11a is provided on the right side of the back surface of the housing 10 at a position corresponding to the tray side connection end 24a provided in the above-described disc tray 20, and the outside air exhaust port 11b is provided in the above-described disc tray 20. It is provided on the left side of the back surface of the housing 10 at a position corresponding to the provided tray-side connection end 24b.

  A ventilation path communicating with the outside air intake port 11a is formed in front of the outside air intake port 11a, and an outside air intake side connection end 12a is provided at the front end thereof. Further, a ventilation path communicating with the outside air exhaust port 11b is formed in front of the outside air exhaust port 11b, and an outside air exhaust side connection end 12b is provided at the front end thereof. Packings 13a and 13b are affixed to the outside air intake side connection end 12a and the outside air exhaust side connection end 12b, respectively. In addition, a fan 14 serving as a blowing unit is installed in a ventilation path provided in front of the outside air intake side connection end 12a. The fan 14 introduces outside air located outside the housing 10 into the ventilation path via the outside air intake port 11a and promotes the flow of outside air taken into the housing 10.

  As shown in FIG. 6, when the disc tray 20 is in the loading position, the outside air intake side connection end 12a is connected to the tray side connection end 24a provided on the rear end surface of the disc tray 20, and the outside air exhaust side connection end. 12b is connected to a tray side connection end 24b provided on the rear end face of the disc tray 20. In this state, the outside air intake side connection end 12a and the tray side connection end 24a, and the outside air exhaust side connection end 12b and the tray side connection end 24b are connected via the packings 13a and 13b, respectively. Therefore, the outside air intake port 11a and the outside air ventilation path 25, and the outside air ventilation path 25 and the outside air exhaust port 11b are connected in an airtight manner.

  As described above, in the state where the disc tray 20 is in the loading position, a flow path is formed in which only the outside air flows in the order of the outside air intake port 11a, the outside air ventilation passage 25, and the outside air exhaust port 11b. Then, by driving the fan 14 in a state where the flow path is formed, a flow of outside air as indicated by an arrow A shown in FIG. 3 is generated. At this time, since the tray entrance 10a provided on the front surface of the housing 10 is closed by the decorative plate 20c attached to the front end of the disk tray 20, the internal space formed inside the housing 10 is also airtight. It will be sealed.

  With the above-described configuration, in the state where the disk tray 20 is in the loading position, the air flows in the inside air and the outside air ventilation path 25 located inside the housing 10 while maintaining the airtightness of the internal space of the housing 10. It is possible to exchange heat with the outside air through the disk tray 20. For this reason, the heated inside air is cooled by the outside air, and the heat generating components (for example, the tray transport mechanism 40, the pickup 50, the turntable (not shown), etc.) are cooled by the cooled inside air. Therefore, the design freedom of the layout of the internal components is not hindered, dust intrusion into the housing 10 and noise leakage to the outside can be prevented, and the internal components can be effectively cooled. It becomes possible.

(Embodiment 2)
FIG. 7 is an external view of the disk device according to the second embodiment of the present invention as viewed from diagonally upward on the back side. FIG. 8 is a plan view showing the structure of the disc tray in the disc apparatus shown in FIG. FIG. 9 is a cross-sectional view of the disc tray along the line IX-IX in FIG. The same parts as those in the first embodiment are given the same reference numerals in the drawing, and the description thereof will not be repeated here.

  As shown in FIGS. 7 to 9, the disk device 100B in the present embodiment, like the disk device 100A in the first embodiment described above, allows only the outside air to flow when the disk tray 20 is in the loading position. An outside air ventilation path 25 is provided. However, in the disk device 100B in the second embodiment, unlike the disk device 100A in the first embodiment, as shown in FIG. 9, the disk tray 20 is composed of a resin cover 20A and a metal hollow molded body 20B. The outside air ventilation path 25 is formed inside the metal hollow molded body 20B. The metal hollow molded body 20B is a molded product formed of, for example, an aluminum alloy, copper, or copper alloy as a raw material, and the resin cover 20A is formed of, for example, ABS, like the disk tray 20 in the above-described embodiment. Manufactured from resin materials such as resin.

  As shown in FIG. 8, the outside air ventilation path 25 provided in the metal hollow molded body 20B constituting the disc tray 20 is similarly connected to the tray side connection end provided on the right side of the rear end surface of the metal hollow molded body 20B. It communicates with 24a and also communicates with a tray side connection end 24b provided on the left side of the rear end face of the metal hollow molded body 20B. Further, the outside air ventilation path 25 is disposed so as to surround an opening 20 a provided in the disc tray 20. Note that the outside air ventilation path 25 is an air flow path that allows only outside air located outside the housing 10 to flow when the disk tray 20 is in the loading position.

  As shown in FIG. 7, the tray-side connection ends 24a and 24b provided on the rear end surface of the metal hollow molded body 20B are arranged so that the disc tray 20 is at the loading position, as in the disc device 100A in the first embodiment. In a certain state, the external air intake side connection end 12 a and the external air exhaust side connection end 12 b provided in the housing 10 are connected to the external air intake port 11 a and the external air exhaust port 11 b provided on the back surface of the housing 10. .

  As shown in FIGS. 8 and 9, a resin cover 20A is attached to the upper part of the metal hollow molded body 20B, and an inside air ventilation path 27 is provided between the resin cover 20A and the metal hollow molded body 20B. Is formed. The inside air ventilation path 27 communicates with an inside air inlet 26 a provided in the opening 20 a of the disk tray 20 and also communicates with an inside air outlet 26 b provided on the lower surface of the disk tray 20. Further, the inside air ventilation path 27 is disposed so as to surround the opening 20 a provided in the disc tray 20. Note that the inside air ventilation path 27 is an air flow path for passing only the inside air located inside the housing 10 in a state where the disk tray 20 is in the loading position.

  In the vicinity of the opening surface of the inside air exhaust port 26b formed in the disc tray 20, a fan 15 as a blowing means is installed. The fan 15 introduces the inside air located inside the housing 10 into the inside air ventilation path 27 via the inside air intake opening 26a, and the inside air taken into the inside air ventilation path 27 via the inside air exhaust opening 26b. For discharging again to the internal space of the housing 10 and for blowing a part of the internal air discharged through the internal air exhaust port 26b toward a specific internal component such as the pickup 50 at the same time. is there. Due to the action of the fan 15, the inside air located in the internal space of the housing 10 circulates in the housing 10 and the disc tray 20 in the flow direction as shown by the arrow B shown in FIG.

  A disk mounting portion 20b is provided on the top of the resin cover 20A. In addition, a guide rail 21 and a stopper piece 23 are provided at the side end of the resin cover 20A in the same manner as the disk tray of the disk device 100A in the first embodiment.

  As shown in FIGS. 8 and 9, the outside air ventilation path 25 and the inside air ventilation path 27 described above are arranged so that most of them run in parallel inside the disk tray 20. The outside air ventilation path 25 and the inside air ventilation path 27 are stacked in the vertical direction, and are separated by an upper partition wall of the metal hollow molded body 20B. The metal hollow molded body 20B is provided with a plurality of fins 28 extending along the flow direction of the outside air and the inside air.

  With the above-described configuration, when the disc tray 20 is in the loading position, the inside air and the outside air are not mixed, and the airtightness of the internal space of the housing 10 is maintained and the disc tray 20 is provided inside the disc tray 20. Thus, heat exchange is efficiently performed inside the disk tray 20 between the inside air flowing through the inside air ventilation path 27 and the outside air flowing through the outside air ventilation path 25 provided inside the disk tray 20. Thus, the inside air is drastically cooled. Then, the heat generating component is cooled by the cooled inside air. Therefore, the design freedom of the layout of the internal components is not hindered, dust intrusion into the housing 10 and noise leakage to the outside can be prevented, and the internal components can be effectively cooled. It becomes possible.

  Further, in the disk device 100B according to the present embodiment, the flow direction of the outside air and the flow direction of the inside air on the surface of the partition wall that separates the outside air passage 25 and the inside air passage 27 are shown in FIG. Since the right side portion of the tray 20 is configured in the reverse direction, the heat exchange efficiency particularly in this portion is improved, and the apparatus can be cooled very effectively. Furthermore, since the fins 28 extend in the same direction as the flow direction of the inside air and the outside air, flow resistance hardly occurs, and high heat exchange efficiency can be maintained.

  Further, in the disk device 100B in the present embodiment, since the upper part of the disk tray 20 is constituted by the resin cover 20A and the lower part is constituted by the metal hollow molded body 20B, the surface of the disk mounting part 20b. The resin is made of resin, and even if the disk 60 is repeatedly attached and detached, the information recording surface of the disk 60 is prevented from being damaged, and heat exchange between the inside air and the outside air can be realized with high efficiency. Therefore, it is possible to obtain a high cooling effect while preventing the occurrence of malfunction such as a read error or a write error.

  Furthermore, in the disk device 100B according to the present embodiment, the inside air exhaust port 26b is configured to face the pickup 50 that is particularly susceptible to thermal influence, so that the pickup 50 can be effectively cooled. Thus, it is possible to prevent malfunctions such as reading errors and writing errors.

(Embodiment 3)
FIG. 10 is a schematic cross-sectional view showing the internal structure of the disk device according to Embodiment 3 of the present invention, and shows a state where the disk tray is in the loading position. The same parts as those in the first embodiment are given the same reference numerals in the drawing, and the description thereof will not be repeated here.

  As shown in FIG. 10, the disk device 100C according to the present embodiment has the above-described connection method in which the tray side connection ends 24a, 24b, the outside air intake side connection end 12a, and the outside air exhaust side connection end 12b are connected in an airtight manner. This is different from the disk device 100A in the first embodiment.

  Specifically, in the disk device 100C in the present embodiment, the tray side connection ends 24a and 24b, the outside air intake side connection end 12a and the outside air exhaust side connection end 12b are airtight by the flexible tubes 16a and 16b, respectively. It is connected to the. The flexible tubes 16a and 16b have a predetermined length so that the airtight connection between the connection ends is maintained even when the disc tray 20 moves to the unloading position (tray position shown in FIG. 1). It is necessary to have. Therefore, in a state where the disc tray 20 is located at the loading position as shown in FIG. 10, it is necessary to secure a space in the housing 10 in which the excess portions of the flexible tubes 16a and 16b are accommodated. .

  When this configuration is adopted, the passage through which the outside air always flows is maintained airtight not only in the state where the disc tray 20 is in the loading position but also in the unloading position. Can be reliably prevented.

  In the disk device in the first to third embodiments described above, a configuration is adopted that maintains even the airtightness inside the housing in a state where the disk tray is in the unloading position and a state where the disk tray is moved through the tray inlet / outlet. However, a shutter mechanism may be provided at the tray inlet / outlet and the outside air supply / exhaust port so that the airtightness of the internal space is always secured.

  In the disk devices in the first and second embodiments described above, it is necessary to configure the fan that promotes the flow of outside air so that it operates only when the disk tray is in the loading position. In order to realize this configuration, for example, it is conceivable to provide position detecting means for detecting the position of the disk tray, and to separately provide control means for controlling the operation of the fan based on the information of the position detecting means.

  Further, in the disk device in the above-described third embodiment, the flexible tube has an excess portion, and when the disk tray is in the loading position, the space for accommodating the flexible tube is inside the housing. Although the case where it is provided separately has been described as an example, the flexible tube itself may be configured to expand and contract. In order to realize this configuration, for example, adopting a flexible tube having a bellows mechanism is conceivable.

  The present invention also relates to a CD, a CD-ROM (Compact Disc-Read Only Memory), a CD-R (Compact Disc-Recordable), a CD-RW (Compact Disc-Rewritable), a DVD, a DVD-ROM (Digital Versatile Disc-). The present invention can be applied to all types of disk devices that target disk-shaped recording media such as Read Only Memory (DVD), DVD-R (Digital Versatile Disc-Recordable), and DVD-RW (Digital Versatile Disc-Rewritable). Further, the present invention is naturally applicable not only to an external disk device installed alone but also to a disk device incorporated as an assembly in another device.

  The above-described embodiments disclosed herein are illustrative in all respects and are not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is the external view which looked at the disk apparatus in Embodiment 1 of this invention from the front side diagonally upward. It is the external view which looked at the disk apparatus in Embodiment 1 of this invention from the back side left diagonal upper direction. It is a top view which shows the structure of the disc tray of the disc apparatus in Embodiment 1 of this invention. FIG. 4 is a sectional view taken along line IV-IV of the disc tray shown in FIG. 3. FIG. 3 is a schematic cross-sectional view showing the internal structure of the disk device according to Embodiment 1 of the present invention, and shows a state where the disk tray is slightly pulled out from the loading position. FIG. 3 is a schematic cross-sectional view showing the internal structure of the disk device according to Embodiment 1 of the present invention, and shows a state where the disk tray is in a loading position. It is the external view which looked at the disk apparatus in Embodiment 2 of this invention from the back side left diagonally upward. It is a top view which shows the structure of the disc tray of the disc apparatus in Embodiment 2 of this invention. It is sectional drawing along the IX-IX line of the disc tray shown in FIG. FIG. 6 is a schematic cross-sectional view showing an internal structure of a disk device according to Embodiment 3 of the present invention, and shows a state where a disk tray is in a loading position.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Housing | casing, 10a Tray inlet / outlet, 11a Outside air intake port, 11b Outside air exhaust port, 12a Outside air intake side connection end, 12b Outside air exhaust side connection end, 13a, 13b Packing, 14 (For outside air) Blower fan, 15 (For inside air) Blower fan, 16a, 16b Flexible tube, 20 disc tray, 20a opening, 20b disc mounting portion, 20c decorative plate, 21 guide rail, 22 rack, 23 stopper piece, 24a, 24b tray side connection end, 25 outside air Ventilation path, 26a Inside air inlet, 26b Inside air outlet, 27 Inside air ventilation path, 30 Chassis, 31 Support part, 32 Stopper part, 40 Tray transport mechanism, 41 Motor, 42 Belt, 43, 44 Relay gear, 45 Tray gear 46 Slider 50 Pickup 51 Pickup lens 60 Disk.

Claims (11)

A disc tray having a disc placement portion on which a disc-shaped recording medium is placed, a housing having a tray entrance through which the disc tray can be put in and out, and a loading position and an unloading position of the disc tray through the tray entrance A disk device having a tray transport mechanism to be moved between,
The disk tray includes a metal hollow molded body including an outside air ventilation path that allows only the outside air located outside the housing to flow in the state where the disk tray is at the loading position, and the metal hollow. It is attached so as to cover the upper part of the molded body, has the disk mounting portion on the upper surface, and is positioned inside the casing between the hollow molded body and at least the disk tray in the loading position. Including a resin tray cover that forms a ventilation path for the inside air that allows only the inside air to flow,
The disk device further includes a blowing unit that promotes the flow of outside air that passes through the ventilation path for outside air, and a blowing unit that promotes the flow of inside air that passes through the ventilation path for inside air,
The disk device is configured such that the inside air that has passed through the inside air ventilation path is blown to a pickup disposed inside the housing. A disc tray having a disc placement portion on which a disc-shaped recording medium is placed, a housing having a tray entrance through which the disc tray can be put in and out, and a loading position and an unloading position of the disc tray through the tray entrance A disk device having a tray transport mechanism to be moved between,
The disk device, wherein the disk tray has an outside air ventilation path for allowing only outside air located outside the housing to flow in at least the disk tray in the loading position.   The disk device according to claim 2, further comprising a blowing unit that promotes a flow of outside air passing through the outside air ventilation path.   The disk tray further includes an inside air ventilation path that allows only the inside air located inside the housing to pass through at least when the disk tray is in the loading position. The disk device described.   The disk apparatus according to claim 4, further comprising a blowing unit that promotes a flow of the inside air that passes through the inside air ventilation path.   The outside air ventilation path and the inside air ventilation path are arranged in parallel at least in part inside the disk tray, and the flow of outside air on the surface of the partition wall that separates the outside air ventilation path and the inside air ventilation path. 6. The disk device according to claim 4, wherein the direction and the flow direction of the inside air are opposite in at least a part.   The disk according to any one of claims 4 to 6, wherein an inside air exhaust port for discharging inside air that has passed through the inside air ventilation path faces a pickup disposed inside the housing. apparatus.   The disk device according to claim 2, wherein a surface of the disk mounting portion is formed of a resin material.   The disk tray is attached so as to cover a metal hollow molded body including the outside air ventilation path and an upper portion of the metal hollow molded body, and has the disk mounting portion on an upper surface thereof. The disk device according to claim 2, further comprising a resin tray cover that forms the inside air ventilation path with a body. The housing includes an outside air inlet for introducing outside air located outside the housing into the outside air ventilation path, and an outside air outlet for discharging outside air that has passed through the outside air ventilation path to the outside of the housing. Including
The outside air intake port and the outside air ventilation path are airtightly connected, and the outside air exhaust port and the outside air ventilation path are airtightly connected in a state where the disk tray is in the loading position. The disk device according to any one of 2 to 9. The housing includes an outside air inlet for introducing outside air located outside the housing into the outside air ventilation path, and an outside air outlet for discharging outside air that has passed through the outside air ventilation path to the outside of the housing. Including
The outside air intake port and the outside air ventilation path are airtightly connected by a flexible tube, and the outside air exhaust port and the outside air ventilation path are airtightly connected by a flexible tube. Item 10. The disk device according to any one of Items 2 to 9.

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