JP2014078294A - Optical disk reproduction device, vehicle and electronic apparatus mounted therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical disk reproduction device capable of increasing the stability of optical pickup operation, a vehicle and an electronic apparatus mounted therewith.SOLUTION: The optical disk reproduction device includes an optical pickup 16 and an optical pickup drive body 17 disposed on the rear side of a base board 18. The base board 18 includes a light passing opening 25 for irradiating a beam of light from the optical pickup 16 to an optical disk 13. The light passing opening 25 is formed in a portion of the base board 18 corresponding to a movement trajectory of the optical pickup 16. The optical disk reproduction device has an air intake port 26 opened in a rotation direction of the optical disk 13 at an optical disk rotation drive body 14 side of the light passing opening 25 in the rotation direction of the optical disk 13.

Description

  The present invention relates to an optical disk reproducing apparatus, and an automobile and electronic equipment equipped with the same.

  The structure of an optical disk reproducing device mounted on an automobile or an electronic device includes a substrate, an optical disk rotating drive body that passes through a through hole of the substrate, and has an optical disk mounting portion protruding toward the substrate surface, and the optical disk. An optical pickup that performs at least one of reading data from or writing data to the optical disk that is rotationally driven on the surface side of the substrate by a rotary driving body, and moving the optical pickup in the radial direction of the optical disk And an optical pickup driving body to be operated.

  The optical pickup and the optical pickup driver are arranged on the back side of the substrate, and light passes through the substrate portion corresponding to the movement locus of the optical pickup for irradiating light from the optical pickup toward the optical disc. An opening is formed, and an exhaust port that pushes an air flow generated by the rotation of the optical disk to the optical pickup side is provided in a substrate portion that becomes an opening edge of the light passage opening (for example, the following patent document) 1).

JP 2005-166218 A

  The optical disk reproducing apparatus described above attempts to stabilize the operation by cooling the optical pickup on the back side of the substrate by pushing the air flow generated by the rotation of the optical disk into the exhaust port.

  However, the air flow generated by the rotation of the optical disk diffuses between the optical disk and the substrate surface in the outer circumferential direction, but dares to hardly flow into the optical pickup direction on the back side of the substrate from the exhaust port with high ventilation resistance. As a result, the temperature of the optical pickup may increase and the operation may become unstable.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the stability of the operation of an optical pickup.

In order to achieve this object, the present invention includes a substrate, an optical disk rotation drive member that penetrates the through hole of the substrate, and has an optical disk mounting portion protruding toward the substrate surface, and the optical disk rotation drive. An optical pickup that performs at least one of reading data from or writing data to the optical disk that is rotationally driven on the surface side of the substrate by the body, and light that moves the optical pickup in the radial direction of the optical disk A pickup driver, and the optical pickup and the optical pickup driver are arranged on the back side of the substrate, and the substrate portion corresponding to the movement locus of the optical pickup is directed from the optical pickup to the optical disk. A light passage opening for irradiating light is formed, and the optical disk of the light passage opening is formed. A rotary drive side, the rotational direction of the optical disc, the first air inlet spread toward the rotational direction of the optical disc is provided, thereby it is to achieve the intended purpose.

  As described above, the present invention provides a substrate, an optical disk rotation driving body that penetrates the through hole of the substrate, and has an optical disk mounting portion protruding to the substrate surface side, and the optical disk rotation driving body. An optical pickup that performs at least one of reading data from or writing data to an optical disk that is rotationally driven on the front side, and an optical pickup driver that moves the optical pickup in the radial direction of the optical disk. The optical pickup and the optical pickup driver are arranged on the back side of the substrate, and the substrate portion corresponding to the movement locus of the optical pickup is irradiated with light from the optical pickup toward the optical disc. Forming a light passage opening, and on the optical disk rotation drive side of the light passage opening, The direction of rotation of the disk, so is provided with a first intake port spread toward the direction of rotation of the optical disc, it is possible to increase the stability of operation of the optical pickup.

  That is, the present invention is such that a first air inlet that extends in the rotation direction of the optical disk is provided in the rotation direction of the optical disk on the optical disk rotation drive side of the light passage opening provided in the substrate portion. is there.

  In other words, in the present invention, by providing the first air inlet that widens in the rotation direction of the optical disk, the substrate is moved from the back surface side of the substrate to the substrate surface side through the first air inlet as the optical disk rotates. Air is sucked up, and the suction force at this time is extremely strong compared to the case where air is pushed into the back side of the substrate through the first air inlet, and a large amount of air is transferred from the back side of the substrate to the front side. It will be sucked up.

  In this way, a large amount of air flow sucked from the back surface side of the substrate to the front surface side of the substrate through the first air intake port cools the optical pickup on the back surface side of the substrate. It can cool and stabilize its operation.

The perspective view which shows the state which mounted the optical disk reproducing device of Embodiment 1 of this invention in the motor vehicle Perspective view of the optical disk reproducing apparatus Perspective view of the optical disk reproducing apparatus Exploded perspective view of the optical disk reproducing apparatus Perspective view of the optical disk reproducing apparatus Perspective view of the optical disk reproducing apparatus Main part plan view of the optical disk reproducing apparatus Main part plan view of the optical disk reproducing apparatus Main part plan view showing an operating state of the optical disk reproducing apparatus Main part plan view showing an operating state of the optical disk reproducing apparatus Main part plan view showing an operating state of the optical disk reproducing apparatus Sectional view of the principal part showing the operating state of the optical disk reproducing apparatus The principal part expanded sectional view which shows the operation state of the optical disk reproducing device

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

(Embodiment 1)
In FIG. 1, a handle 3 is disposed in front of a car 2 in a car 1.

  An electronic device 4 is disposed in front of the vehicle 2 and on the side of the handle 3.

  As shown in FIG. 2, the electronic device 4 is provided with a display unit 5, an operation unit 6, a disc insertion slot 7, and the like on the front side.

  Further, an optical disk reproducing device 8 shown in FIGS. 3 and 4 is arranged inside the electronic apparatus 4.

  The optical disk reproducing apparatus 8 includes a main body case 11 including a top plate 9 and an outer peripheral frame 10, and a disk insertion slot 12 is provided on the front side of the main body case 11 (the disk insertion slots 7 and 12 correspond in the front-rear direction). Is related).

  As is well known, the optical disk reproducing apparatus 8 is an optical disk rotation drive on which such a main body case 11 and an optical disk (13 in FIG. 6) inserted into the main body case 11 from the disk insertion port 12 are mounted. 3 and the optical disk 13 mounted on the optical disk mounting portion 14a of the optical disk rotation driving body 14 are attached to the optical disk rotation driving body 14 side from the side opposite to the optical disk rotation driving body 14, as shown in FIG. The optical disk 16 shown in FIGS. 5 and 7 for executing at least one of reading data from the optical disk 13 rotated by the optical disk rotating drive 14 and writing data to the optical disk. An optical pick for moving the optical pick-up 16 in the radial direction of the optical disc 13 Tsu and a flop driving body 17.

  More specifically, the motor 21 shown in FIG. 12 that constitutes the optical disk rotation driving body 14 is disposed on the back side of the substrate 18 as can be understood from FIGS. 5 and 7.

  Further, as can be understood from FIGS. 5 and 7, the optical disk mounting portion 14 a constituting the optical disk rotation driving body 14 passes through the through hole 19 of the substrate 18 and protrudes to the surface side of the substrate 18.

  In this state, the optical disk 13 is mounted on the optical disk mounting portion 14a on the surface side of the substrate 18 as shown in FIG.

  As described above, the optical pickup 16 is moved in the radial direction of the optical disk 13 by the optical pickup driver 17, and the substrate 18 corresponding to the movement locus of the optical pickup 16 has a portion shown in FIG. As shown, a light passage opening 20 for irradiating light from the optical pickup 16 toward the optical disc 13 is formed.

  Further, as shown in FIG. 7, the optical pickup 16 and the optical pickup driver 17 described above are disposed in the light passage opening 20.

  As is well known, the optical pickup driver 17 includes a motor 21, a screw 22 rotated by the motor 21, and an engagement side (not shown) that engages with the screw 22. Thus, the optical pickup 16 is moved along the guide shaft 23 in the radial direction of the optical disc 13.

  In the present embodiment, the optical pickup driver 17 and a part of the optical pickup 16 (a part excluding the light irradiation part and the light receiving part) in the light passage opening 20 provided in the substrate 18 are shown in FIG. The cover 24 shown in FIG.

  Since this cover 24 is provided as a part of the substrate 18, the optical pickup 16 moves in the radial direction of the optical disk 13, and the light irradiation part and the light receiving part are exposed. The optical disk mounting portion 14a of the optical disk rotation driving body 14 includes a light passage opening 25 that passes through the through hole 19 of the substrate 18 and protrudes to the surface side of the substrate 18.

  In addition, the light passage opening 25 of the cover 24 has a rotation direction of the optical disk 13 in the rotation direction of the optical disk 13 (direction A in FIG. 6) on the optical disk rotation driving body 14 side of the light passage opening 25. An air inlet 26 that extends toward the front is provided.

  In addition, as shown in FIG. 8, the intake port 26 of the present embodiment is connected to the light passage opening 25 on the optical disk rotation driving body 14 side of the light passage opening 25 (formed by cutting the light passage opening 25 outward). doing.

  Further, on the outer peripheral side of the intake port 26 of the cover 24, the cover 24 is penetrated through an intake port 27 having an opening area smaller than that of the intake port 26 in the rotation direction of the optical disc 13 (direction A in FIG. 6). A plurality are provided.

  The air inlet 27 is formed so as to be substantially inclined from the outer periphery to the inner periphery with respect to the rotation direction of the optical disk.

  In the present embodiment, the intake port 26 and the intake port 27 are formed in the cover 24. However, when the cover 24 is formed by the substrate 18, the intake port 26 and the intake port 27 are It will be formed on the substrate 18.

  In the above configuration, as shown in FIG. 6, FIG. 12, and FIG. 13, when the optical disk 13 is mounted on the optical disk mounting portion 14a of the optical disk rotation driving body 14 and is rotated by the optical disk rotation driving body 14 as shown in FIG. Information recorded on the back side is read by the optical pickup 16 or information is written.

  At this time, the temperature of the optical pickup 16 increases as the light emitting element (28 in FIG. 7) emits light. In this embodiment, the back surface of the substrate 18 is negatively applied by the optical disk 13 rotating on the surface of the substrate 18. The optical pickup 16 is cooled by air sucked from the side to the surface side.

  Specifically, FIGS. 9 and 12 show the cooling when the optical pickup 16 is moving in the inner circumferential direction, and FIG. 10 shows the cooling when the optical pickup 16 is moving in the middle circumferential direction. Further, FIG. 11 shows cooling when the optical pickup 16 is moving in the outer peripheral direction.

  9 to 11, the arrow A indicates the rotation direction of the optical disc 13, and the other arrows are negative pressures accompanying the rotation of the optical disc 13, and the flow of air sucked up from the back surface side of the substrate 18 to the front surface side. Is shown.

  As shown in FIGS. 9 and 12, when the optical pickup 16 is moving in the inner circumferential direction, the air sucked from the back surface side of the substrate 18 to the front surface side by the negative pressure accompanying the rotation of the optical disk 13 is absorbed by the optical pickup 16. Along the outer peripheral surface, the air then passes through the inner peripheral side of the large inlet 26 and the small inlet 27 on the inner periphery, and flows toward the surface of the substrate 18.

At this time, as the optical disk 13 rotates, the air that cools the optical pickup 16 along the outer peripheral surface of the optical pickup 16 is sucked up from the back surface side of the substrate 18 to the front surface side of the substrate 18 through the intake ports 26 and 27. This suction force is extremely stronger than that for pushing air into the back surface side (optical pickup 16 side) of the substrate 18 through the air inlets 26 and 27, and a large amount of air flows from the back surface side of the substrate 18 to the front surface side. It will be sucked up.

  In this way, a large amount of air flow sucked from the back surface side of the substrate 18 to the front surface side of the substrate 18 through the intake ports 26 and 27 cools the optical pickup 16 on the back surface side of the substrate 18. The pickup 16 can be sufficiently cooled to stabilize its operation.

  In this embodiment, as shown in FIG. 8, the optical disk 13 is rotated in the direction of rotation of the optical disk 13 (direction A in FIG. 6) on the optical disk rotation driving body 14 side of the light passage opening 25 provided in the cover 24. The reason for providing the inlet 26 that expands in the direction of rotation is as follows.

  That is, the negative pressure associated with the rotation of the optical disk 13 is strongest at the inner peripheral portion, but when the optical pickup 16 is moving in the inner peripheral direction as shown in FIG. It is feared that the suction to the inner peripheral portion where the negative pressure accompanying the rotation of the optical disk 13 is the strongest is obstructed.

  Therefore, in this embodiment, on the optical disk rotation drive body 14 side of the light passage opening 25 provided in the cover 24, the rotation direction of the optical disk 13 (direction A in FIG. 6) is directed toward the rotation direction of the optical disk 13. By providing the widened air inlet 26, it is possible to suppress the inhibition of air suction to the inner peripheral portion where the negative pressure accompanying the rotation of the optical disk 13 is the strongest.

  In other words, the fact that the suction of air to the inner peripheral portion where the negative pressure accompanying the rotation of the optical disk 13 is the strongest is not hindered increases the amount of air flow to the outer peripheral portion of the optical pickup 16, thereby effectively making the optical pickup 16 effective. It will be possible to cool down.

  Since the optical disk 13 often has basic operation information written on the inner peripheral portion thereof, the optical pickup 16 always moves in the inner peripheral direction, so that the cooling effect of the optical pickup 16 in this portion is reduced. Raising is very meaningful.

  Further, the air inlet 26 is provided as described above even when the optical pickup 16 is moving in the middle circumferential direction as shown in FIG. 10 or when the optical pickup 16 is moving in the outer circumferential direction as shown in FIG. Thus, by increasing the amount of air sucked into the inner peripheral portion where the negative pressure with the rotation of the optical disk 13 is the strongest, the amount of air flow to the outer peripheral portion of the optical pickup 16 is increased, thereby making the optical pickup 16 effective. It becomes possible to cool it.

  In these cases of FIGS. 10 and 11, as can be understood from FIG. 13, the cover 24 is provided on the outer peripheral side of the air inlet 26 in the rotation direction of the optical disk 13 (direction A in FIG. 6). The air flowing through the intake port 27 becomes air passing through the outer periphery of the optical pickup 16, and the optical pickup 16 is thereby effectively cooled.

  Further, the air inlet 27 is also substantially inclined from the outer peripheral direction to the inner peripheral direction in the rotation direction of the optical disc 13 (direction A in FIG. 6) so that air is sucked up smoothly through the air inlet 27. It is in a state of letting it.

As described above, in the present invention, the first air inlet that extends in the rotation direction of the optical disc is provided in the rotation direction of the optical disc on the optical disc rotation drive side of the light passage opening provided in the substrate portion. Is.

  In other words, in the present invention, by providing the first air inlet that widens in the rotation direction of the optical disk, the substrate is moved from the back surface side of the substrate to the substrate surface side through the first air inlet as the optical disk rotates. Air is sucked up, and the suction force at this time is extremely strong compared to the case where air is pushed into the back side of the substrate through the first air inlet, and a large amount of air is transferred from the back side of the substrate to the front side. It will be sucked up.

  In this way, a large amount of air flow sucked from the back surface side of the substrate to the front surface side of the substrate through the first air intake port cools the optical pickup on the back surface side of the substrate. It can cool and stabilize its operation.

  Therefore, it is expected to be used for automobiles and electronic devices.

DESCRIPTION OF SYMBOLS 1 Car 2 Car interior 3 Handle 4 Electronic device 5 Display part 6 Operation part 7 Disc insertion slot 8 Optical disk reproducing apparatus 9 Top plate 10 Outer frame 11 Main body case 12 Disc insertion slot 13 Optical disk 14 Optical disk rotation drive 15 Disc clamp means 16 Optical pickup DESCRIPTION OF SYMBOLS 17 Optical pick-up drive body 18 Board | substrate 19 Through-hole 20 Light passage opening 21 Motor 22 Screw 23 Guide shaft 24 Cover 25 Light passage opening 26 Air inlet 27 Air inlet 28 Light emitting element

Claims (9)

A substrate, an optical disk rotation drive member that penetrates the through hole of the substrate, and has an optical disk mounting portion protruding toward the substrate surface side, and an optical disk that is driven to rotate on the surface side of the substrate by the optical disk rotation drive member An optical pickup that executes at least one of reading data from and writing data to the optical disc, and an optical pickup driving body that moves the optical pickup in a radial direction of the optical disc, and driving the optical pickup and the optical pickup A body is disposed on the back side of the substrate, and a light passage opening for irradiating light from the optical pickup toward the optical disc is formed in the substrate portion corresponding to the movement locus of the optical pickup. In the rotation direction of the optical disc on the optical disc rotation drive side of the light passage opening , An optical disk reproducing apparatus provided with a first intake port spread toward the direction of rotation of the optical disc. The optical disk reproducing apparatus according to claim 1, wherein a first air inlet is connected and formed on the disk rotation drive side of the light passage opening. 3. The optical disk reproducing apparatus according to claim 2, wherein a second air intake port having an opening area smaller than that of the first air intake port is provided on an outer peripheral side of the light intake opening provided on the substrate. 3. The optical disk reproducing apparatus according to claim 2, wherein a plurality of second intake ports having an opening area smaller than that of the first intake port are provided on the outer peripheral side of the first intake port of the light passage opening provided on the substrate. . 5. The optical disk reproducing apparatus according to claim 3, wherein the second air inlet is formed so as to be substantially inclined from the outer periphery to the inner periphery with respect to the rotation direction of the optical disk. Of the rotation direction of the optical disk in the light passage opening provided in the substrate and the opposite direction, at least the surface side in the rotation direction of the optical disk is covered with a cover, and the first optical disk rotation drive side of the light passage opening in the cover The optical disk reproducing apparatus according to claim 1, further comprising a cutout portion or a through portion for the intake port. 7. The optical disk reproducing apparatus according to claim 2, wherein a second air inlet notch or a through hole is provided on the outer peripheral side of the light passage opening in the cover from the first air inlet. An automobile equipped with the optical disk reproducing device according to any one of claims 1 to 7 in a vehicle. An electronic apparatus comprising the optical disk reproducing device according to any one of claims 1 to 8 provided in a main body case.