JP4300997B2 - Optical disk device - Google Patents

Description

  The present invention relates to an optical disk device mounted on an electronic device such as a personal computer or a notebook computer.

  As optical disk devices, CD-ROM, CD-R / RW, DVD, and the like have already been put into practical use, and application to various areas and development for high performance are being actively carried out. Particularly recently, with the rapid market expansion of personal computers, the penetration rate of built-in optical disk devices in personal computers has increased.

  A perspective view of a conventional optical disc apparatus is shown in FIG.

  In FIG. 9, reference numeral 1 denotes an optical disk device. The optical disk device 1 includes a housing 2 and a tray 3 that is held in the housing 2 so as to be able to appear and retract. The housing 2 is formed in a bag shape by combining metal housing portions 2 a and 2 b, and the tray 3 is projected and retracted from the opening of the housing 2. An optical pickup module 4 is attached to the tray 3 from the back side. Rails 3 a are provided on both sides of the tray 3 so as to be movable. The rails 3 a are held by rail holding portions 3 b provided integrally with the tray 3. In FIG. 9, the rail 3a is provided only on one side, but a similar rail may be provided on the other side.

  The housing part 2a and the housing part 2b are firmly fixed to each other using a locking means and a spiral not shown. As the constituent material of the housing 2, a conductive material such as a metal material such as iron, iron alloy, aluminum, aluminum alloy, and magnesium alloy is preferably used. In addition, a structure in which each casing is made of a resin material and a highly conductive metal film is formed thereon using a technique such as electrodeposition may be used. Furthermore, each of the housing part 2a and the housing part 2b may be made of the same kind of material, or may be made of different materials. In addition, the average thickness of the main plane portion of each of the housing portion 2a and the housing portion 2b is between 0.3 mm and 1.6 mm, and when the average thickness is relatively thin, the housing portion 2a and the housing portion. The body part 2b is made of a metal material, and is formed, for example, by pressing a metal plate. Further, when the average thickness is relatively large, the casing 2a and the casing 2b are made of die casting (aluminum, magnesium alloy, etc.).

  The optical pickup module 4 has at least a spindle motor 5 for rotating the optical disk, a metal cover 6 provided with an opening 6a from the spindle motor 5 to the outer periphery, and a carriage 7 partially exposed from the opening 6a. Yes. The carriage 7 is movably held by a plurality of guide shafts provided in the optical pickup module 4, and can be moved toward and away from the spindle motor 5 by a feed motor (not shown). Reference numeral 8 denotes a bezel provided on the front surface of the tray 3, and the bezel 8 is configured to have a size enough to block the opening of the housing 2.

  The carriage 7 includes a light source such as a high-power laser diode, various optical members, and an objective lens that forms a light spot on the optical disk. When recording on an optical disk, a high output light source, an IC for driving the light source, and the like are required. As a result, the heat generation of the light source and the IC is enormous, and the recording / reproducing characteristics are affected. In particular, in the optical disc apparatus 1 as shown in FIG. 9, since there is a demand for thinning and miniaturization, there is a problem that the heat capacity is lowered. In particular, in the thin optical disc apparatus 1 in which the thickness of the central portion of the housing 2 is 14 mm or less, and further 10 mm or less, this problem becomes remarkable.

The method for cooling the inside of the optical disk device is described in, for example, (Patent Document 1) and (Patent Document 2).
Japanese Patent Laid-Open No. 11-25667 JP 2000-231782 A

  These describe the method of cooling by guiding the air flow generated when the optical disk is rotated to the carriage 7, but these methods originally have a thickness of the central part of the housing 2 of 14 mm or less or 10 mm. The following optical disk device is not assumed, and such an ultra-thin optical disk device cannot be said to have a sufficient cooling effect.

  SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described conventional problems, and to provide an optical disc apparatus capable of sufficiently cooling even an extremely thin optical disc apparatus and capable of reducing deterioration in recording / reproducing characteristics. To do.

The present invention has been made to solve the above problems, provided a rotary drive means for rotating the optical disk, and a carriage provided movably mounted at least a light source and various optical members, the first opening An optical pickup module having a cover, a tray having a second opening, the tray having the optical pickup module attached thereto so that a part of the optical pickup module is exposed from the second opening, and the tray And a first main surface of the tray including an optical disk mounting area and an outside of the optical disk mounting area provided outside the optical disk mounting area. The outside of the optical disk mounting area and the light The tray and the optical pickup module are coupled to each other so that the pickup module faces the optical module. A disk mounting region outside the gas introduction member is fixed to the first opening upward, the gas introducing member are those from the tray and the optical pickup module is formed as a separate and independent member, the first the third opening was closed on the side opposite the first opening, the third opening is formed by an outer wall provided in the gas introduction member, said outer wall inhibits the flow of the gas flow generated in the optical disk As described above , the optical disk apparatus is provided substantially in parallel with the tray drawing direction .

  With this configuration, the rotation of the optical disk can effectively guide the air at a relatively low temperature between the housing and the optical disk between the housing and the tray, and efficiently circulate the air flow. High cooling effect. For this reason, the disk device can be effectively reduced in thickness and size and can effectively take measures against heat, and problems such as deterioration in recording and reproducing characteristics due to heat generation can be suppressed.

  According to the present invention, since an air flow can be circulated efficiently, it is possible to take measures against heat in an optical disc apparatus that is particularly thin and miniaturized, and it is possible to suppress inconveniences such as deterioration in recording / reproducing characteristics due to heat. .

The invention of claim 1 of the present invention includes a rotary drive means for rotating the optical disk, and a carriage provided movably mounted at least a light source and various optical members, an optical pickup having a cover provided with a first opening A module, a tray having a second opening, to which the optical pickup module is attached so that a part of the optical pickup module is exposed from the second opening, and a housing for holding the tray in a retractable manner A first main surface of the tray includes an optical disk mounting area and an outside of the optical disk mounting area provided outside the optical disk mounting area, such that the outside of the optical disk mounting area and the optical pickup module face each other. the tray and is bound to one another the optical pickup module, an optical disc mounting area outside the tray Gas introduction member is fixed to the first opening upward, the gas introducing member are those with the tray and the optical pickup module is formed as separate and independent member, on the side opposite to the first opening have a third opening, the third opening is formed by an outer wall provided in the gas introduction member, said outer wall and drawing direction of the tray so as to inhibit the flow of the gas flow generated in the optical disk An optical disc apparatus characterized by being provided substantially in parallel .

  With this configuration, the rotation of the optical disk can effectively guide the air at a relatively low temperature between the housing and the optical disk between the housing and the tray, and efficiently circulate the air flow. High cooling effect. For this reason, the disk device can be effectively reduced in thickness and size and can effectively take measures against heat, and problems such as deterioration in recording and reproducing characteristics due to heat generation can be suppressed.

  According to a second aspect of the present invention, in the optical disk apparatus according to the first aspect of the present invention, the gas flow generated on the outer peripheral portion of the optical disk when the optical disk is mounted on the first main surface side and the optical disk is rotated by the rotation driving means. Through the third opening, and having means for guiding the second main surface of the tray opposite to the first main surface and the housing.

  With this configuration, it is possible to guide the air flow to a region where the temperature is likely to be high due to heat generation in the optical disc apparatus, and the cooling effect can be enhanced.

  According to a third aspect of the present invention, in the optical disc apparatus according to the first aspect, the third opening is provided to face both the first opening and a cover provided in the optical pickup module. It is characterized by that.

  With this configuration, the degree of cooling can be adjusted by adjusting the opening amount of the third opening.

According to a fourth aspect of the present invention, in the optical disc apparatus according to the first aspect, the first opening is provided between a rotation driving means and an outer end of the optical pickup module, and the first opening is rotated. The end opposite to the means is provided on the front end face side of the tray.

  With this configuration, when the optical disc apparatus is mounted on an electronic device or the like, the third opening can be disposed on the side close to the outside air, so that the cooling effect is high.

According to a fifth aspect of the present invention, in the optical disk apparatus according to the first aspect, the third opening is provided in a front end surface portion of the tray with respect to the rotation driving means.

  With this configuration, when the optical disc apparatus is mounted on an electronic device or the like, the third opening can be disposed on the side close to the outside air, so that the cooling effect is high.

According to a sixth aspect of the present invention, in the optical disc apparatus of the first aspect, the third opening is provided between the front end surface of the tray and the optical disc mounting area.

  With this configuration, when the optical disc apparatus is mounted on an electronic device or the like, the third opening can be disposed on the side close to the outside air, so that the cooling effect is high.

  According to an eighth aspect of the present invention, in the optical disc apparatus according to the first aspect, the third opening is formed by an outer wall provided in the gas introduction member, and the outer wall is a gas flow generated in the optical disc. It is provided so that the flow of may be inhibited.

  With this configuration, the air flow can be effectively guided to the third opening using the thickness of the tray, and cooling by the air flow can be performed efficiently.

(Embodiment 1)
Embodiments of an optical disk device according to the present invention will be described below.

  1 is a perspective view of an optical disc apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of an optical pickup module, FIG. 3 is a perspective view of only a tray, and FIG. 4 is an optical disc apparatus according to an embodiment of the present invention. It is a figure which shows the flow of an air flow. For the sake of explanation, FIG. 1 shows a state where the upper part of the housing is removed. In the present embodiment, elements having the same functions as those of the conventional configuration shown in FIG. 9 are denoted by the same reference numerals.

  The tray 3 is composed of a resin frame. An optical disk mounting area 3d is provided in a portion of the tray 3 that faces the disk when the disk is mounted, and the outer periphery is circular according to the shape of the optical disk. An optical disk mounting area outside 3e is provided outside the optical disk mounting area 3d, and the optical disk mounting area 3d is about 1.5 mm to 4 mm (same as the thickness of the optical disk to be mounted) with respect to the optical disk mounting area outside 3e. Slightly larger extent) A depressed recess is formed.

In the present embodiment, the tray 3 has a substantially square shape, and the optical disk having the maximum diameter to be mounted assumes a disk shape. Therefore, the optical disk mounting area 3d has a substantially circular shape as described above, and The diameter of the optical disk mounting area 3d is the same as the diameter of the largest optical disk that can be mounted, or about 1 mm to 7 mm larger. The outside 3e of the optical disk mounting area has a generally triangular shape. Further, the optical disk mounting area 3d indicates an area including a portion facing the optical disk and having a slight gap on the outer periphery when the optical disk is mounted. The optical disk mounting area outside 3e is the main surface of the optical disk. This is a region that does not face at all.

  An opening 3c is provided in the optical disc mounting area 3d, and the optical pickup module 4 is attached to the opening 3c by being inserted from the back surface.

  A spindle motor 5 is provided substantially at the center of the optical disk mounting area 3d. At least a part of the spindle motor 5 protrudes from the opening 3c, and the carriage 7 and the cover 6 are also exposed.

  Similarly to the one shown in FIG. 9, rails 3 a are provided on both sides of the tray 3 so as to be movable, and the rails 3 a are held by rail holding portions 3 b provided integrally with the tray 3.

  The optical pickup module 4 has at least a spindle motor 5 for rotating the optical disk, a metal or resin cover 6 provided with an opening 6a from the spindle motor 5 to the outer periphery, and a carriage 7 partially exposed from the opening 6a. is doing. The carriage 7 is equipped with a light source such as a high-power laser diode, various optical members, an objective lens that forms a light spot on the optical disk, an IC that drives the light source, and the like. The carriage 7 is movably held by a plurality of guide shafts (not shown) provided in the optical pickup module 4, and is moved toward and away from the spindle motor 5 by a feed motor (not shown). Move to.

  Reference numeral 8 denotes a bezel provided on the front end surface of the tray 3, and the bezel 8 is configured to have a size enough to block the opening of the housing 2.

  In the embodiment of the present invention, as shown in FIGS. 1, 2, and 3, the tray 3 has an opening 6a when the optical pickup module 4 is attached to the outside 3e of the optical disk mounting area on the bezel 8 side. The part which opposes is the opening 11 in which a surface is not formed. In the optical pickup module 4, a gas introduction member 10 is provided above the opening 6 a at a position corresponding to above the opening 11. The gas introduction member 10 is formed as a member independent of the tray 3 and the optical pickup module 4 and has an opening 3f on the side facing the opening 6a.

  Of the optical disk mounting area outside 3e on the bezel 8 side, the portion facing the opening 6a is the opening 11 and the gas introduction member 10 having the opening 3f is provided. In contrast, in the present embodiment, the opening 6a is exposed in the optical disc mounting area exterior 3e facing the opening 6a.

  FIG. 4 shows an air flow path realized by this configuration. 4A is a plan view seen from the housing 2a side, and FIG. 4B is a cross-sectional view taken along the cross-sectional line shown in FIG. 4A. The air flow generated by the optical disk 9 rotated by the spindle motor 5 is a relatively strong air flow around the outer periphery of the optical disk 9, and the air flow passes through an opening 3 f provided in the gas introduction member 10. The gas flows through the opening 6a along the wall surface of the gas introduction member 10 and efficiently flows into a region opposite to the optical disc mounting side of the tray 3 (a space sandwiched between the tray 3 and the housing portion 2b). Then, in the area on the opposite side, there is a carriage 7 on which a high-output light source, a light source driving IC, and the like are mounted. Etc. can be cooled.

  In this configuration, when the optical disc 9 is mounted and the tray 3 is stored in the housing 2, the air at a relatively low temperature between the housing portion 2 a and the optical disc 9 is also effectively caused by the rotation of the optical disc 9. It can be guided between the casing 2b and the tray 3 and has a high cooling effect.

  It has been found that in the present embodiment, the temperature of the portion including the light source and various optical members mounted on the carriage 7 can be reduced by 4 ° C. or more with respect to the conventional configuration. That is, if the air flow path is simply configured as in the prior art, effective cooling is difficult in the optical disc apparatus 1 in which the thickness of the central portion of the housing 2 is 14 mm or less or 10 mm or less. With the configuration of the present embodiment, the air flow generated in the optical disk can be guided very effectively to the space between the casing 2b and the tray 3 in which most of the carriage 7 is accommodated. Cooling performance can be obtained.

  In the present embodiment, an opening 3f is provided in the outside of the optical disk mounting area 3e so as to be continuous with the optical disk mounting area 3d, and the outer periphery of the mounted optical disk 9 and the opening 3f are positioned very close (10 mm). Can be configured). Therefore, it is possible to effectively guide the air flow.

  In the embodiment of the present invention, an opening 3f is provided between the optical disc mounting area 3d and the front end face side of the tray 3, that is, the end portion on the side where the bezel 8 is provided. Further, the opening 6a is also formed between the spindle motor 5 and the end of the tray 3 where the bezel 8 is provided, and the longitudinal direction of the opening 6a is inclined so as not to be perpendicular to the bezel 8. Is provided. By arranging the opening 3f on the bezel side of the tray 3 as described above, the normal casing 2 portion is accommodated in an electronic device such as a personal computer, and the bezel 8 side is disposed outside the electronic device. Therefore, it becomes easy to flow in relatively cooled air or the like.

  5 to 8 show examples of the outer walls 3g and 3h that form the opening 3f provided in the gas introduction member 10. FIG.

  For example, as shown in FIG. 5, when the optical disk 9 rotates in the direction of arrow A, an air flow is generated in the B direction. The air flow B flows directly between the tray 3 and the housing portion 2b from the opening 3f, and the air flow flowing along the outer wall 3h is blocked by the outer wall 3g. It flows between the housing parts 2b.

  As shown in FIG. 5, the outer wall 3g may be formed substantially in parallel with the direction C in which the tray 3 is accommodated in the housing 2, and as shown in FIG. May be formed substantially in parallel. Further, as shown in FIG. 7, the outer wall 3g may be formed in a concave shape, and the outer wall 3g is formed so as to be inclined so that the width of the outside 3e of the optical disk mounting area becomes narrower as it approaches the side of the tray 3 as shown in FIG. May be.

  In the present embodiment, air is used as the gas flow, but other gases may be used.

  Since the optical disk apparatus of the present invention can circulate the air flow efficiently, it is possible to take measures against heat of an optical disk apparatus that is particularly thin and miniaturized, and suppresses problems such as deterioration of recording / reproducing characteristics due to heat. Can do. Therefore, the present invention can be applied to electronic devices such as personal computers and notebook computers.

The perspective view of one embodiment of the present invention 1 is a perspective view of an optical pickup module in an optical disc apparatus according to an embodiment of the present invention. 1 is a perspective view of a tray in an optical disc apparatus according to an embodiment of the present invention. The figure which shows the flow path of an air flow in the optical disk apparatus in one embodiment of this invention The top view which shows the state which pulled out the tray in the optical disk device in one embodiment of this invention The top view which shows the state which pulled out the tray in the optical disk device in one embodiment of this invention The top view which shows the state which pulled out the tray in the optical disk device in one embodiment of this invention The top view which shows the state which pulled out the tray in the optical disk device in one embodiment of this invention A perspective view showing a conventional optical disc apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical disk apparatus 2 Housing | casing 2a, 2b Housing | casing part 3 Tray 3a Rail 3b Rail holding part 3c Opening 3d Optical disk mounting area | region 3e Optical disk mounting area | region 3f Opening 3g Outer wall 3h Outer wall 4 Optical pick-up module 5 Spindle motor 6 Cover 6a Opening 7 Carriage 8 Bezel 9 Optical disk 10 Gas introduction member 11 Opening

Claims (6)

A rotation driving means for rotating the optical disc,
A carriage mounted for mounting to move at least a light source and various optical members,
An optical pickup module including a cover provided with a first opening;
A tray having a second opening and attached with the optical pickup module so that a part of the optical pickup module is exposed from the second opening;
A case for holding the tray in a retractable manner;
The first main surface of the tray includes an optical disk mounting area and an outside of the optical disk mounting area provided outside the optical disk mounting area.
The tray and the optical pickup module are coupled to each other so that the outside of the optical disc mounting area and the optical pickup module face each other.
An optical disk mounting region outside of the tray, the gas introducing member is fixed to the first opening upward,
The gas introducing member are those from the tray and the optical pickup module is formed as a separate and independent member, have a third opening opposed to said first opening,
The third opening is formed by an outer wall provided in the gas introduction member, and the outer wall is provided substantially in parallel with the drawing direction of the tray so as to inhibit the flow of the gas flow generated in the optical disk. An optical disc device characterized.   An optical disk is mounted on the first main surface side, and the gas flow generated on the outer peripheral portion of the optical disk by rotating the optical disk by the rotation driving means passes through the third opening and is opposite to the first main surface in the tray. 2. An optical disk apparatus according to claim 1, further comprising means for guiding between the second main surface and the housing.   2. The optical disc apparatus according to claim 1, wherein the third opening is provided to face both the first opening and a cover provided in the optical pickup module.   The first opening is provided between the rotation driving means and the outer end of the optical pickup module, and the end opposite to the rotation driving means of the first opening is provided on the front end surface side of the tray. 2. The optical disk apparatus according to claim 1, wherein   2. The optical disc apparatus according to claim 1, wherein the third opening is provided in a front end surface portion of the tray with respect to the rotation driving means.   2. The optical disc apparatus according to claim 1, wherein the third opening is provided between the front end surface of the tray and the optical disc mounting area.

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