WO2004034399A1 - 光ディスク装置 - Google Patents
光ディスク装置 Download PDFInfo
- Publication number
- WO2004034399A1 WO2004034399A1 PCT/JP2003/009556 JP0309556W WO2004034399A1 WO 2004034399 A1 WO2004034399 A1 WO 2004034399A1 JP 0309556 W JP0309556 W JP 0309556W WO 2004034399 A1 WO2004034399 A1 WO 2004034399A1
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- WO
- WIPO (PCT)
- Prior art keywords
- air
- optical
- optical disk
- optical head
- semiconductor laser
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1406—Reducing the influence of the temperature
- G11B33/1426—Reducing the influence of the temperature by cooling plates, e.g. fins
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1406—Reducing the influence of the temperature
Definitions
- the present invention relates to an optical disk device equipped with an optical disk drive.
- an optical disk drive equipped with an optical disk drive includes a disk motor, an optical head transfer motor, a semiconductor laser mounted on the optical head, a drive circuit for driving them, and components that generate heat such as a power supply. Is equipped.
- the optical disk drive has a hermetic structure for dust prevention as described above, the heat of each heat source is naturally difficult to move, and the heat stays there and is accumulated.
- the operating temperature environment there is a correlation between the operating temperature environment and the life of a semiconductor laser, and the life of an element is shortened when used at high temperature. For this reason, it is desirable to operate in the lowest possible temperature environment, but the element itself generates more heat when recording at high output.
- This device is an optical disk subsystem device equipped with an optical disk drive, a power supply for driving the optical disk drive, and a cooling means for cooling the inside of the housing.
- An optical disk drive and a cooling means are arranged by dividing the first chamber into two, and an internal air circulation path is formed by the cooling means.
- the disposed optical disk drive eliminates the adverse effects of dust protection, and the cooling means circulates air inside, so that the temperature inside the first chamber can be reduced. Is gradually homogenized, and the temperature of the semiconductor laser mounted on the optical head also decreases.
- an internal air circulation path is formed in the closed first room, and an air flow is formed in the entire first room.
- This air flow has the effect of causing heat transfer to make the temperature distribution in the room uniform.
- heat transfer by air cooling is performed more efficiently as the flow rate and flow velocity of the air flow are larger.
- a semiconductor laser has the lowest heat resistance and is also a heat source among the components of an optical disc, suppressing the temperature rise of the semiconductor laser is necessary to improve the thermal reliability and durability of the device. Is most effective.
- the device described in Patent Document 1 described above forms an air flow in the entire first room.
- the flow rate and the flow velocity of the air flow reaching the semiconductor laser are a part of the air flow generated by the fan.
- the efficiency is low to suppress the temperature rise of the semiconductor laser, and a sufficient heat radiation effect cannot be obtained.
- Patent Document 1 there is a limit in obtaining a desired heat radiation effect for the semiconductor laser, and there is a problem that the thermal reliability and durability of the device cannot be ensured. there were.
- an air circulation path is formed to pass through a place other than the area where the optical disk drive is configured, and there is a problem that the entire apparatus becomes large and the commercial value is impaired. .
- Patent Document 1
- an optical disk device comprises: an optical head having a semiconductor laser mounted in a housing-shaped drive case; a rotation drive unit for driving an optical disk; An optical disc drive mechanism having a transfer mechanism for moving the air in the drive case; and a stirring fan for flowing the air in the drive case.
- the rotation of the stirring fan causes the air in the drive case to move toward the stirring fan.
- an air passage through which the air flows so that the sucked air blows out toward the optical head or the semiconductor laser.
- FIG. 1 is a front view schematically showing the internal structure of an optical disc device according to Embodiment 1 of the present invention.
- FIG. 2 is a plan view schematically showing the internal structure of the optical disk device shown in FIG.
- FIG. 3 is a view showing experimental results of the optical disc device according to Embodiment 1 of the present invention.
- FIG. 4 is a plan view schematically showing the internal structure of the optical disc device according to Embodiment 2 of the present invention.
- FIG. 5 is a plan view schematically showing an internal structure of the optical disk device according to Embodiment 3 of the present invention in a state where the optical head 7 is on the inner peripheral side of the optical disk 8.
- FIG. 6 is a plan view schematically showing the internal structure of the optical disc device according to Embodiment 3 of the present invention in a state where the optical head 7 is on the outer peripheral side of the optical disc 8.
- FIG. 7 is a plan view schematically showing the internal structure of an optical disc device according to Embodiment 4 of the present invention.
- FIG. 8 is a front view schematically showing the internal structure of the optical disk device shown in FIG.
- FIG. 9 is a side view schematically showing the internal structure of the optical disk device shown in FIG.
- FIG. 10 shows the first optical head 2 in the optical disk device shown in FIG.
- FIG. 7 is a front view schematically showing the internal structure of the optical disc device during the operation of FIG.
- FIG. 11 is a side view schematically showing the internal structure of the optical disc device in the state of FIG.
- FIG. 12 is a front view schematically showing the internal structure of the optical disk device in the operation of the second optical head 32 in the optical disk device shown in FIG.
- FIG. 13 is a side view schematically showing the internal structure of the optical disc device in the state of FIG.
- FIG. 14 is a side view schematically showing the internal structure of the optical disc device according to Embodiment 5 of the present invention.
- the optical head is housed in the drive case to ensure dustproofness, and the air sucked in from the drive case and blown out from the stirring fan is blown to the optical head or the semiconductor laser.
- the temperature rise of the semiconductor laser can be effectively suppressed while ensuring the performance.
- the drive case is disposed in a housing-shaped main body case, and the inside of the main body case is partitioned into the drive case and a deck area having a vent hole for outside air.
- a drive circuit for driving the optical disk drive mechanism and a power supply for the drive circuit are arranged in the deck area.
- the deck area can be cooled by the outside air introduced from the ventilation holes in the deck area, and the heat generated in the drive circuit and power supply is prevented from transferring to the inside of the drive case. Can be.
- the drive case is disposed in a housing-shaped main body case, and the inside of the main body case is partitioned into the drive case and a deck area having a ventilation hole for outside air.
- the optical head is a short wavelength semiconductor A first optical head on which a laser is mounted, and a second optical head on which a long-wavelength semiconductor laser is mounted, wherein the optical disk drive mechanism comprises: the first and second optical heads; A first transfer mechanism for transferring the first optical head, a second transfer mechanism for transferring the second optical head, and a drive mechanism provided independently of the first and second transfer mechanisms to drive the optical disc.
- the first and second transfer mechanisms are parallel to a surface of an optical disc mounted on the rotary drive means, and the first and second transfer mechanisms are connected to the first and second optical heads.
- the first transfer mechanism for the short-wavelength semiconductor laser is disposed on the side near the stirring fan, so that the long-wavelength laser is provided. It is possible to efficiently cool a short wavelength semiconductor laser whose temperature rise is larger than that of a semiconductor laser.
- the outside air introduced from the ventilation holes in the deck area can cool the deck area, thereby suppressing the heat generated in the drive circuit and power supply from being transferred to the inside of the drive case.
- the short-wavelength semiconductor laser is disposed on a side surface close to the stirring fan among side surfaces in a direction perpendicular to a transfer direction of the first optical head. According to this configuration, a semiconductor laser having a short wavelength can be cooled more efficiently.
- the long-wavelength semiconductor laser is disposed on a side surface close to the stirring fan among side surfaces in a direction perpendicular to a transfer direction of the second optical head. Preferably, it is located. According to this configuration, a long-wavelength semiconductor laser can be cooled more efficiently.
- the position of the first transfer mechanism changes so that the air blown out from the stirring fan is directly blown to the second light head.
- the flow from the stirring fan does not increase in temperature, but is obstructed by the shield and the flow velocity decreases. Therefore, the laser beam is directly sprayed on the long-wavelength semiconductor laser, and the long-wavelength semiconductor laser can be efficiently cooled.
- the air path is formed so that air below the optical head is sucked in, and the sucked air blows out toward the optical head or the semiconductor laser through the stirring fan. Is preferred. According to this configuration, the low-temperature air below the optical head is blown toward the optical head or the semiconductor laser, so that cooling can be performed efficiently.
- an inlet port for sucking air in the drive case, and an outlet port for blowing air into the drive case are formed, and the air path includes the inlet port and the inlet port.
- the agitating fan is formed in the air duct, which is connected to an air outlet and extends to the outside of the drive case. According to this configuration, the air duct is arranged so as to extend to the outside of the drive case, so that the space in the deck area can be effectively used, and the stirring fan can be provided without increasing the size of the device. it can.
- the wind conduit is covered with a heat insulating material. According to this configuration, it is possible to prevent the temperature of the air passing through the wind duct from rising due to the heat of the circuit board or the power supply arranged in the deck area, and thus the semiconductor laser has a high output. Even when recording with a semiconductor laser Temperature can be kept low.
- a cooling means for cooling the air passing through the wind conduit is provided. According to this configuration, the cooling effect of the stirring fan can be enhanced, and a decrease in the cooling effect due to the surrounding temperature can be suppressed. Further, it is preferable that the cooling means is an air cooling system. According to this configuration, the structure is simplified.
- the cooling means is a heat pipe or a high heat conductive material attached to the wind conduit. According to this configuration, the cooling effect of the stirring fan is improved.
- the cooling means is a Peltier device. According to this configuration, the cooling effect of the stirring fan is improved.
- the stirring fan is arranged so that air blown out from the stirring fan is blown to the optical head or the semiconductor laser over the entire movable range of the optical head. According to this configuration, the temperature of the semiconductor laser can always be kept low.
- ducts are arranged so as to blow air blown out from the stirring fan to the optical head or the semiconductor laser over the entire movable range of the optical head. According to this configuration, the temperature of the semiconductor laser can always be kept low.
- the duct is a wind direction plate, and the tilt angle of the wind direction plate changes in conjunction with the radial movement of the optical head of the optical disk. It is preferable that the direction of the optical head follows the movement of the optical head. According to this configuration, the flow of the stirring fan is directly blown against the semiconductor laser regardless of the position of the optical head in the movable range, and the temperature of the semiconductor laser is always kept low. . Further, it is preferable to provide a dust collecting filter for collecting the dust of the sucked air. According to this configuration, dust in the drive case is removed at the time of suction by the stirring fan, and as the suction continues, a cleaner environment is formed inside the drive case. .
- a shielding plate is provided on a straight line connecting a blowing position of the blowing flow of the stirring fan into the drive case and an objective lens mounted on the light head and collecting the light of the semiconductor laser. Is preferred. According to this configuration, the flow of air blown toward the objective lens can be disturbed in front of the objective lens, and dust contained in the air can be prevented from adhering to the objective lens.
- FIG. 1 is a front view schematically showing the internal structure of the optical disk device according to Embodiment 1 of the present invention
- FIG. 2 is a plan view schematically showing the internal structure of the optical disk device shown in FIG.
- a housing-shaped drive case 2 is mounted inside a housing-shaped main body case 1.
- the drive case 2 divides the inside of the main body case 1 into a deck area 3 and a drive area 4. Further, the drive area 4 has a hermetically sealed structure that is sealed from the outside air by the drive case 2.
- an optical head 7 is disposed in the drive area 4, and the optical head 7 is supported by guide shafts 11a and lib.
- the optical head 7 has a semiconductor laser 5 as a light source for recording and reproduction, and an objective lens 6 for condensing light from the semiconductor laser 5.
- the guide shaft 11 a is a screw shaft whose end is connected to the rotation shaft of the feed motor 10.
- the guide shafts 11a and 11b and the feed motor 10 constitute an optical head transfer mechanism.
- the optical disk 8 is arranged so as to be chucked by a disk motor 9 as a rotation driving means.
- the optical disk 8 is irradiated with light collected by the objective lens 6.
- An optical disk drive mechanism is constituted by the optical head transfer mechanism in addition to the optical head 7 and the disk motor 9.
- a loading mechanism for loading and unloading the optical disc 8 placed on the tray into and out of the drive case 2 and a loading mechanism for loading and unloading the optical disc 8.
- Drive case 2 opening and closing mechanism Although not shown, in the present embodiment, a loading mechanism for loading and unloading the optical disc 8 placed on the tray into and out of the drive case 2, and a loading mechanism for loading and unloading the optical disc 8.
- Drive case 2 opening and closing mechanism Although not shown, in the present embodiment, a loading mechanism for loading and unloading the optical disc 8 placed on the tray into and out of the drive case 2, and a loading mechanism for loading and unloading the optical disc 8.
- an intake port 12 a is provided at a lower portion of the drive case 2 on a side surface of the drive case 2.
- An outlet 12b is formed above the inlet 12a.
- the air inlet 12a and the air outlet 12b are connected by a wind conduit 12c.
- the air duct 1 2 c is mounted in close contact with the drive case 2 so as not to impair the sealing of the drive area 4.
- a stirring fan 12 is mounted inside the wind conduit 12 c.
- the air ducts 12c are arranged so as to extend outside the drive case 2, the space in the deck area 3 can be used effectively, and the stirring fan 12 can be provided without increasing the size of the device. Can be.
- the air in the drive case 2 is sucked into the stirring fan 12 via the intake port 12 a at the bottom of the drive case 2, and the drive case 1 2 b is blown from the upper outlet 12 b. It is blown out in 2 ⁇ .
- the stirring fan 12 and the semiconductor laser 5 are disposed so as to face each other, the blowout flow from the stirring fan 12 is directly blown toward the semiconductor laser 5.
- the optical disk A drive circuit 13 for driving the drive mechanism is provided.
- a power supply 14 that supplies power to the drive circuit 13 is disposed on the side surface of the drive case 2.
- the optical disk device configured as described above will be described more specifically below.
- the power supply 14 itself generates heat.
- a semiconductor laser 5 a disk motor 9 for rotating and driving the optical disk 8
- a feed motor 10 for generating a driving force for transferring the optical head 7 in a radial direction of the optical disk 8, and a drive for driving the optical disk drive mechanism.
- Circuit 13 is powered by power supply 14. Therefore, each of these components also generates heat.
- a deck fan 15 is mounted at the position of the exhaust hole 19 formed in the main body case 1, and a ventilation hole 16 is provided on the lower surface of the main body case 1. Is provided. Looking at the rotation axis direction of the deck fan 15, the deck fan 15 and the power supply 14 are arranged in parallel in the rotation axis direction. Also, as shown in FIG. 1, when viewed from the front side of the deck fan 15, the deck fan 15 and the power supply 14 are arranged in parallel in the vertical direction.
- the deck area 3 is cooled, and the heat generated in the drive circuit 13 and the power supply 14 is transferred to the inside of the drive case 2. It can be suppressed as much as possible.
- the warm air whose temperature has increased due to the heat generated by the power supply 14 can be efficiently discharged.
- the semiconductor laser 5, the disk motor 9, and the feed motor 10 generate heat, and a temperature distribution occurs.
- the temperature of the lower region is lower in the height direction of the drive region 4 than in the upper region.
- the low-temperature air below is sucked in from the inlet 12 a by the rotation of the stirring fan 12, and is directly blown from the outlet 12 b toward the opposing semiconductor laser 5.
- the heat of the semiconductor laser 5 can be forcibly radiated.
- the semiconductor laser 5 and the air outlet 12 b face each other, the lower low-temperature air is blown to the semiconductor laser 5 while the flow rate and the flow velocity of the wind generated by the stirring fan 12 are the largest. It will be. Therefore, heat transfer with high efficiency occurs, and the temperature rise of the semiconductor laser 5 is effectively suppressed.
- the air blown to the semiconductor laser 5 flows above the drive case 2 and then returns downward to be sucked in again from the inlet 12a.
- the rotation of the stirring fan 12 allows forced air to flow from inside the drive case 2 from below to above, and further from above to below.
- the temperature rise of the disk motor 9 and the feed motor 10, which are heat sources other than the semiconductor laser 5 can be suppressed.
- the present embodiment it is possible to effectively prevent the temperature rise of the semiconductor laser 5 without increasing the size of the device while ensuring the drive case 2 with a sealed structure to ensure dustproofness. . Therefore, even when recording using the semiconductor laser 5 at high output, the temperature of the element can be kept low, and the life of the element can be prolonged, and the optical disk apparatus has high reliability and durability against heat and dust. Nature can be realized.
- the flow from the stirring fan is blown to the semiconductor laser, but this flow is blown not only to the semiconductor laser but also to the optical head in the vicinity. For this reason, the cooling effect is also enhanced for the LSI and circuit components arranged near the semiconductor laser for driving the semiconductor laser. This is the same in the following embodiments.
- the inside of main body case 1 is divided by drive case 2 into drive region 4 having a sealed structure and deck region 3 having outside air and air permeability. For this reason, the inside of the drive area 4 is protected against dust, and the optical system of the optical head 7, particularly, the dust resistance of the objective lens 6 is also secured.
- a dust collecting filter 17 is attached to the intake port 12a, so that the dust is collected when the dust is sucked from the intake port 12a. Dust is removed by filter 17. By repeating this operation, a cleaner environment is formed inside the drive case 2.
- the shielding plate 18 is formed on the optical head 7 on a straight line connecting the outlet 12 b and the objective lens 6. For this reason, the flow of the blown stream blown toward the objective lens 6 can be disturbed in front of the objective lens, and dust contained in the blown stream is prevented from adhering to the objective lens 6.
- Figure 3 is a graph showing the experimental results.
- the horizontal axis is the elapsed time t (minutes) from the start of operation, and the vertical axis is the temperature T (° C).
- the section indicated by t1 is a section in which the operation of the stirring fan 12 is stopped, and the section indicated by t2 is a section in which the stirring fan 12 is operated.
- Line 50 indicates the temperature of the semiconductor laser 5
- line 51 indicates the temperature in the upper space of the drive case 2
- line 52 indicates the temperature in the lower space of the drive case 2.
- the space temperature of the drive case 2 hardly changes over time.
- the temperature of the semiconductor laser 5 Once again it increases with time, which results in a temperature difference ratio Bell and up to about 2 0 D C to the temperature of the space below the drive case 2.
- FIG. 4 is a plan view schematically showing the internal structure of the optical disc device according to Embodiment 2 of the present invention.
- the parts having the same functions as those in FIG. 2 are denoted by the same reference numerals.
- a duct 19 is provided near the outlet 12b.
- the duct 19 is arranged so that the blowout flow from the blowout port 12 b flows toward the semiconductor laser 5.
- the semiconductor laser 5 and the outlet 12b are not arranged so as to face each other, but the duct 19 can change the direction of the outlet flow, and the outlet from the stirring fan 12 The flow can be directly blown on the semiconductor laser 5. Also in this configuration, the air below the drive case 2 is sucked and blown directly toward the semiconductor laser 5, as in the first embodiment.
- the duct 19 can be formed of a flat plate-shaped member, and can change the direction of the blowout flow with a simple structure.
- the provision of the duct 19 enables a simple structure.
- the blowing flow can be directly blown to the semiconductor laser 5, and the same effect as in the first embodiment can be obtained.
- FIGS. 5 and 6 are plan views schematically showing the internal structure of the optical disc device according to Embodiment 3 of the present invention.
- parts having the same functions as in FIG. 2 are denoted by the same reference numerals.
- 5 shows a state in which the optical head 7 is on the inner peripheral side of the optical disk 8
- FIG. 6 shows a state in which the optical head 7 is on the outer peripheral side of the optical disk 8.
- Louvers 2 0 to form a duct are connected by two vanes 2 0 a and 2 0 b force the connecting plate 2 0 c, constitute a parallel link.
- One end of each of the two blade plates 20a and 20b is rotatably fixed to the drive case 2, and the other end is rotatably fixed to the connecting plate 20c.
- Such fixation is possible by engaging the protruding pins with the holes provided in the blades 20a and 20.
- the connecting plate 20 c is fixed to the optical head 7, it moves together with the movement of the optical head 7.
- the blades 20a and 20b rotate to the outer peripheral side of the optical disk 8, and the outlet 1 2b From the semiconductor laser 5 toward the semiconductor laser 5.
- the outlet flow blown out from the outlets 12 b is directly blown toward the semiconductor laser 5.
- the wind direction plate 20 rotates in conjunction with the movement of the optical head 7, the inclination angle of the wind direction plate 20 changes, and the direction of the blowout flow of the stirring fan 12 changes. Will do. Due to the change in the inclination angle, the direction of the blowout flow follows the movement of the optical head 7. Therefore, no matter where the optical head 7 is located in the movable range, the flow from the stirring fan 12 is blown directly to the semiconductor laser 5, and the temperature of the semiconductor laser 5 is always kept low. become.
- FIG. 7 is a plan view schematically showing the internal structure of the optical disc device according to Embodiment 4 of the present invention.
- FIG. 8 is a front view schematically showing the internal structure of the optical disc device shown in FIG.
- FIG. 9 is a side view schematically showing the internal structure of the optical disk device shown in FIG.
- FIG. 10 is a front view schematically showing the internal structure of the optical disk device when the first optical head 2.6 operates in the optical disk device shown in FIG.
- FIG. 11 is a side view schematically showing the internal structure of the optical disk device in the state of FIG.
- FIG. 12 shows the second optical head 3 in the optical disk device shown in FIG.
- FIG. 4 is a front view schematically showing the internal structure of the optical disk device during the operation of FIG.
- FIG. 13 is a side view schematically showing the internal structure of the optical disk device in the state of FIG.
- a drive case 22 is mounted inside a main body case 21 of the optical disk device.
- the drive case 22 defines the interior of the main body case 21 into a deck area 23 and a drive area 24.
- the drive area 24 has a sealed structure against outside air.
- the first guide shaft 29 a is a screw shaft, and its end is connected to the rotation shaft of the first feed motor 28.
- the blue laser optical disk 45 is rotated by being chucked by a first disk motor 27 which is a rotation driving means.
- the first guide shafts 29 a and 29 b supporting the first disk motor 27 and the first optical head 26 and the first feed motor 28 are provided with the first transfer base 3. Fixed to 0. These components constitute a first transfer mechanism 53.
- a second light head 32 on which a red laser 31 serving as a light source for recording / reproducing at a long wavelength is emitted is supported by second guide shafts 35a and 35b.
- the second guide shaft 35 a is a screw shaft, and its end is connected to the rotating shaft of the second feed motor 34.
- the red laser optical disk 46 (see FIG. 12) is rotated by being chucked by a second disk motor 33 which is a rotation driving means.
- the second disk motor 33, the second guide shaft 35a, 35b supporting the second optical head 32, and the second feed motor 34 are used for the second transfer.
- These components constitute the second transfer mechanism 54.
- the first and second optical heads 26 and 32, the first and second disk motors 27 and 33, and the first and second transfer mechanisms 53 and 54 are provided.
- an optical disk drive mechanism is configured.
- the blue laser optical disk 45 and the red laser optical disk 46 placed on the tray are separately loaded into the drive case 22. And a loading mechanism for unloading from the drive case 22 and an opening and closing mechanism for the drive case 22 for loading and unloading.
- an intake port 38 is provided at a lower portion of the drive case 22 on the side surface of the drive case 22.
- An outlet 39 is formed above the intake port 38.
- the inlet 38 and the outlet 39 are connected by a wind conduit 40.
- the air duct 40 is mounted in close contact with the drive case 22 so as not to impair the hermeticity of the drive area 24.
- a stirring fan 37 is mounted inside the air duct 40. Since the air duct 40 is arranged so as to extend outside the drive case 22, the space of the deck area 23 can be effectively used, and the stirring fan 37 can be provided without increasing the size of the device. Can be.
- the outlet 39 and the blue laser 25 are arranged to face each other so that the outlet flow from the outlet 39 is directly blown toward the blue laser 25.
- the protruding portion where the wind conduit 40 is formed is covered with a heat insulating material 48.
- a circuit board 41 for driving the first and second transfer mechanisms is arranged below the drive case 22 in a deck area 23 in the case body 21.
- a power supply 42 for supplying power to the circuit board 41 is disposed on a side surface of the drive case 22.
- optical disk device configured as described above will be described more specifically below.
- the blue laser optical disk 45 is mounted on the disk motor 27, and the optical disk device starts the recording / reproduction operation.
- the second optical head 32 is in a non-operating state, and the second transfer base 36 rotates around the vertical rotation shaft 47.
- the tilted second optical head 32 is positioned at a position lower than the position at the time of the recording / reproducing operation.
- the power supply 42 itself generates heat.
- the blue laser 25 of the optical head 7 and the optical disk 45 are rotated to generate a driving force to transfer the first disk motor 27 and the first optical head 26 in the radial direction of the optical disk 45.
- the first feed motor 28 and the drive circuit 41 for driving the optical disk drive mechanism are powered by the power supply 42. Therefore, each of these components also generates heat.
- a deck fan 43 is attached at the position of the exhaust hole 49 formed in the housing 21, and a ventilation hole 4 is provided on the lower surface of the housing 21. 4 are provided. Looking at the rotation axis direction of the deck fan 43, the deck fan 43 and the power supply 42 are arranged in parallel in the rotation axis direction. Also, as shown in FIG. 8, when viewed from the front side of the deck fan 43, the deck fan 43 and the power supply 42 are arranged in parallel in the vertical direction.
- the rotation of the deck fan 4 3 allows the outside air to flow through the ventilation holes 4 4
- the air is taken into the area 23 and the air in the deck area 23 is discharged to the outside of the housing 21 through the exhaust hole 49.
- the circuit board 41 and the power supply 42 are located in the middle of this air flow, the heat generated from these flows into the air that is sucked in from the outside and is continuously supplied, and the air is transferred to the outside. Will be discharged. As a result, the deck area 23 is cooled, and the heat generated by the circuit board 41 and the power supply 42 and transfer to the inside of the drive case 22 is minimized. Further, due to the positional relationship between the deck fan 43 and the power supply 42 as described above, the warm air whose temperature has increased due to the heat generated by the power supply 42 can be efficiently discharged.
- the circuit board or 41 arranged in the deck area 23 passes through the inside of the wind conduit 40 due to the heat of the power supply 42. Since the temperature of the air can be prevented from rising, the temperature of the semiconductor laser can be kept low even during recording using the semiconductor laser at high output.
- the blue laser 25, the first disk motor 27, and the first feed motor 28 generate heat, and a temperature distribution is generated.
- the temperature of the lower region is lower in the height direction of the drive region 24 than in the upper region. .
- this low-temperature air is sucked from the intake port 38 by the rotation of the stirring fan 37, and is directly directed from the outlet port 39 toward the opposing blue laser 25. Sprayed.
- the heat of the blue laser 25 can be forcibly radiated.
- the blue laser 25 and the outlet 39 are opposed to each other, the lower temperature air blows to the blue laser 25 while the flow rate and the flow velocity of the air generated by the stirring fan 37 are the highest. Will be killed. As a result, efficient heat transfer occurs and the blue laser The temperature rise of 25 will be effectively suppressed.
- the air blown to the blue laser 25 flows above the drive case 22 and then returns downward to be sucked in again from the inlet 38. That is, by the rotation of the stirring fan 37, the air inside the drive case 22 can be forcedly convected so as to flow from below to above and further from above to below. As a result, the temperature rise of the first disk motor 27 and the first feed motor 28, which are heat sources other than the blue laser 25, can also be suppressed.
- the temperature of the blue laser 25 will always be constant if the blowout flow from the stirring fan 37 is blown against the blue laser 25. It will be kept low. This can be realized by adjusting the arrangement position of the stirring fan 37. Specifically, adjustment of the arrangement position of the stirring fan 37 in the radial direction of the optical disk,
- Adjustment of the distance between 37 and the semiconductor laser 25 and adjustment of the size of the outlet 39 are performed.
- the first and second optical heads 26 and 32 are arranged in parallel.
- the first optical head 2 for the blue laser 25 is located on the side near the force S and the stirring fan 37. . 6 are located.
- the blue laser 25 is arranged on the side surface near the stirring fan 37 among the side surfaces in the direction perpendicular to the transfer direction of the first optical head 26.
- the blue laser 25 having a short wavelength and a larger temperature rise than the red laser 31 can be efficiently cooled.
- the blue laser optical disk 46 (FIG. 12) is mounted on the second disk motor 33 shown in FIG.
- the power supply 42 itself generates heat.
- a second disk motor 33 for rotating and driving the optical disk 46 and a second optical head 32 for the optical disk 46 are provided. Since power is supplied from a power supply 42 to a second feed motor 34 for generating a driving force for transferring in a radial direction, and a drive circuit 41 for driving an optical disk drive mechanism, these power sources are provided. Each component also generates heat.
- the first optical head 26 In this state, as shown in FIG. 12, the first optical head 26 is in a non-operating state, and the first transfer base 30 rotates and tilts about the vertical rotation shaft 47 as a rotation center. Thus, the first optical head 26 is positioned at a position lower than the position at the time of the recording / reproducing operation.
- the rotation of the deck fan 43 generates a flow of air flowing from the vent hole 44 to the deck fan 43 in the deck area 23. Therefore, heat generated by the circuit board 41 and the power supply 42 is prevented from being transferred to the inside of the drive case 22. This is the same as when the first optical head 26 operates.
- the red laser 31, the second disk motor 33, and the second feed motor 34 generate heat, and a temperature distribution occurs.
- the rate of the heat of the light source moving upward due to natural heat radiation is high, the temperature of the lower area is lower in the height direction of the drive area 24 than in the upper area.
- the first optical head 26 is in a non-operating state, and there is no temperature rise around the first optical head 26 due to the first optical head 26 itself. . Further, as shown in FIGS. 12 and 13, the first optical head 26 is rotated downward about a rotation shaft 47. In addition, the red laser 31 is disposed on a side of the side perpendicular to the transfer direction of the second light head 32 that is closer to the stirring fan 37.
- the flow from the stirring fan 37 does not increase in temperature, does not decrease due to obstruction by a shield, and does not decrease, and as shown in FIG. Passing through the space above the red laser 3 1 Will be sprayed directly. That is, the low-temperature air in the lower part of the drive case 2 2 is sucked in from the air inlet 38 by the rotation of the stirring fan 37, and is directly blown from the air outlet 39 toward the opposing red laser 31. The heat of the red laser 31 can be forcibly radiated.
- the air blown to the red laser 31 is returned downward and is sucked from the re-air inlet 38. That is, by the rotation of the stirring fan 37, the air inside the drive case 22 can be forcedly convected so as to flow upward from below and further downward from above. As a result, the temperature rise of the second disk motor 33 and the second feed motor 34, which are heat sources other than the red laser 31, is also suppressed.
- two head units are used.
- the blow-off flow from the stirring fan 37 passes through the space above the first optical head 26 without rising in temperature, without being obstructed by a shield, and without decreasing the flow velocity. It will be sprayed directly on 1. For this reason, it is not necessary to increase the number of the stirring fans 37 in particular, and only one stirring fan 37 is required, and it is possible to suppress an increase in the size of the apparatus.
- the dustproofness inside the drive area 24 is ensured, and the optical systems of the optical heads 26 and 32, particularly the dustproofness of the objective lens, are also ensured as in the first embodiment.
- the present embodiment has a configuration using two head units.
- it is possible to effectively suppress the temperature rise of the semiconductor laser without increasing the size of the device. Therefore, high reliability and durability against heat and dust can be realized as an optical disk device.
- FIG. 14 is a side view schematically showing the internal structure of the optical disc device according to Embodiment 5 of the present invention.
- the parts having the same functions as those in FIG. 8 are denoted by the same reference numerals.
- the protruding portion where the wind conduit 40 is formed is covered with the high thermal conductive material 53, and the radiating fins 55 are closely attached to the outside thereof with the Peltier element 54 interposed therebetween. Installed.
- the high thermal conductive material 53 is cooled, and the air passing through the inside of the wind conduit 40 can be forcibly cooled.
- the heat generated by the Peltier element 54 itself moves to the heat radiation fins 55 and is radiated by the wind from the deck fan 43.
- the temperature of the laser element can be kept low, and the life of the element can be prolonged.
- the Peltier element 53 is used as the cooling means has been described, but a configuration in which only the radiation fins 55 may be used. Further, a configuration in which a heat pipe or a high thermal conductive material is combined with a radiation fin may be used. According to this configuration, heat transfer is promoted by the heat pipe and the high thermal conductive material, so that the cooling effect can be enhanced.
- the present embodiment has been described with an example of a configuration including the first transfer mechanism and the second transfer mechanism, but may be applied to a configuration with one transfer mechanism.
- the dust collection filter 17 may be provided in any of the second to fifth embodiments.
- the configuration in which the duct 19 is provided in the second embodiment and the configuration in which the wind-dissipating plate 20 is provided in the third embodiment have been described, they are described in any of the first, fourth, and fifth embodiments. May be provided.
- the present invention it is possible to effectively suppress the temperature rise of the semiconductor laser without increasing the size of the device while ensuring dustproofness, and achieve high reliability and durability against heat and dust.
- This is useful for an optical disc device that records and reproduces information using an optical disc that is an information recording medium for video, music, computer data, and the like.
Landscapes
- Optical Head (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/515,106 US7421720B2 (en) | 2002-10-10 | 2003-07-28 | Optical disk device |
JP2004542807A JPWO2004034399A1 (ja) | 2002-10-10 | 2003-07-28 | 光ディスク装置 |
KR1020047020978A KR100655206B1 (ko) | 2002-10-10 | 2003-07-28 | 광 디스크 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002297297 | 2002-10-10 | ||
JP2002-297297 | 2002-10-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004034399A1 true WO2004034399A1 (ja) | 2004-04-22 |
Family
ID=32089266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/009556 WO2004034399A1 (ja) | 2002-10-10 | 2003-07-28 | 光ディスク装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7421720B2 (ja) |
JP (1) | JPWO2004034399A1 (ja) |
KR (1) | KR100655206B1 (ja) |
CN (1) | CN100552803C (ja) |
WO (1) | WO2004034399A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2004061840A1 (ja) * | 2002-12-26 | 2006-05-18 | 松下電器産業株式会社 | ディスク装置 |
JP4557797B2 (ja) * | 2005-05-20 | 2010-10-06 | 株式会社日立製作所 | 光ディスク装置 |
JP4301218B2 (ja) * | 2005-07-27 | 2009-07-22 | ソニー株式会社 | ディスク装置 |
JP4908883B2 (ja) * | 2006-03-15 | 2012-04-04 | 株式会社日立製作所 | 光ディスク装置 |
US7957093B2 (en) * | 2009-07-15 | 2011-06-07 | Seagate Technology Llc | Recording head with current controlled gamma ratio |
WO2014073129A1 (ja) * | 2012-11-06 | 2014-05-15 | パナソニック株式会社 | 光ディスク装置、シート部材及び対物レンズの清浄方法 |
KR20140106051A (ko) * | 2013-02-25 | 2014-09-03 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 광디스크 드라이브 모듈이 결합된 휴대용 컴퓨터의 냉각장치 |
WO2019118352A1 (en) * | 2017-12-11 | 2019-06-20 | Schlumberger Technology Corporation | Air cooled variable-frequency drive |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0385343U (ja) * | 1989-12-20 | 1991-08-29 | ||
JP2002184166A (ja) * | 2000-12-07 | 2002-06-28 | Hitachi Ltd | ディスク装置 |
JP2002184167A (ja) * | 2000-12-07 | 2002-06-28 | Hitachi Ltd | ディスク装置 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07114072B2 (ja) * | 1985-09-10 | 1995-12-06 | オリンパス光学工業株式会社 | 光学式情報読取装置 |
US5000000A (en) * | 1988-08-31 | 1991-03-19 | University Of Florida | Ethanol production by Escherichia coli strains co-expressing Zymomonas PDC and ADH genes |
JPH0358373A (ja) * | 1989-07-26 | 1991-03-13 | Fujitsu Ltd | 光ディスク装置 |
JPH03102652A (ja) * | 1989-09-18 | 1991-04-30 | Canon Inc | 光学的情報記録再生装置 |
JP2690579B2 (ja) * | 1989-12-27 | 1997-12-10 | 株式会社日立製作所 | 光ディスク装置 |
JP2716576B2 (ja) * | 1990-07-03 | 1998-02-18 | キヤノン株式会社 | 光学式情報記録再生装置 |
JPH04195793A (ja) * | 1990-11-26 | 1992-07-15 | Ricoh Co Ltd | 光ディスク装置 |
JPH04195988A (ja) * | 1990-11-28 | 1992-07-15 | Nikon Corp | 光学式情報媒体のドライブ装置 |
US5493457A (en) * | 1991-10-18 | 1996-02-20 | Matsushita Electric Industrial Co., Ltd. | Optical disk apparatus with cooling arrangement |
US5255256A (en) * | 1992-01-07 | 1993-10-19 | International Business Machines Corporation | Optical data storage system with reduced particle contamination |
JPH05325533A (ja) * | 1992-05-19 | 1993-12-10 | Ricoh Co Ltd | 光ディスクドライブ装置 |
JPH0676555A (ja) * | 1992-08-31 | 1994-03-18 | Nippon Seiko Kk | 光ディスク駆動装置 |
JPH06236677A (ja) * | 1993-02-12 | 1994-08-23 | Ricoh Co Ltd | 光学的情報記録再生装置 |
JPH087560A (ja) * | 1994-06-17 | 1996-01-12 | Hitachi Ltd | リム−バブルディスク装置 |
JPH08102180A (ja) | 1994-09-29 | 1996-04-16 | Ricoh Co Ltd | 光ディスクサブシステム装置 |
JPH08147740A (ja) * | 1994-11-24 | 1996-06-07 | Sony Corp | 光ディスク装置のダスト除去装置 |
JPH10124917A (ja) * | 1996-10-18 | 1998-05-15 | Sony Corp | 光学ピックアップ及び光ディスク装置 |
JPH11112177A (ja) * | 1997-10-02 | 1999-04-23 | Nippon Columbia Co Ltd | 電子機器の冷却装置 |
JPH11110959A (ja) * | 1997-10-02 | 1999-04-23 | Matsushita Electric Ind Co Ltd | 光ディスク装置 |
JP3414649B2 (ja) * | 1998-09-10 | 2003-06-09 | 船井電機株式会社 | ディスク装置 |
JP2000285667A (ja) * | 1999-03-31 | 2000-10-13 | Hitachi Ltd | ディスク装置の冷却構造 |
JP2001155478A (ja) * | 1999-11-25 | 2001-06-08 | Nec Eng Ltd | 光ディスク装置 |
JP2001319469A (ja) * | 2000-05-10 | 2001-11-16 | Hitachi Ltd | ディスク装置 |
JP2001338460A (ja) * | 2000-05-25 | 2001-12-07 | Hitachi Ltd | ディスク装置 |
-
2003
- 2003-07-28 KR KR1020047020978A patent/KR100655206B1/ko active IP Right Grant
- 2003-07-28 CN CNB038240793A patent/CN100552803C/zh not_active Expired - Fee Related
- 2003-07-28 JP JP2004542807A patent/JPWO2004034399A1/ja not_active Withdrawn
- 2003-07-28 US US10/515,106 patent/US7421720B2/en not_active Expired - Fee Related
- 2003-07-28 WO PCT/JP2003/009556 patent/WO2004034399A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0385343U (ja) * | 1989-12-20 | 1991-08-29 | ||
JP2002184166A (ja) * | 2000-12-07 | 2002-06-28 | Hitachi Ltd | ディスク装置 |
JP2002184167A (ja) * | 2000-12-07 | 2002-06-28 | Hitachi Ltd | ディスク装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004034399A1 (ja) | 2006-02-09 |
KR20050014878A (ko) | 2005-02-07 |
CN1689105A (zh) | 2005-10-26 |
KR100655206B1 (ko) | 2006-12-11 |
US7421720B2 (en) | 2008-09-02 |
CN100552803C (zh) | 2009-10-21 |
US20060072382A1 (en) | 2006-04-06 |
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