JP3427092B2 - Optical disk drive - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device for mounting or recording a disk-shaped recording medium such as a compact disk (CD), a laser disk (LD) or a CD-ROM for recording or reproducing.

[0002]

2. Description of the Related Art Conventionally, among disk devices such as CDs, LDs, and CD-ROMs, it is usual that an internal recording medium cannot be seen in an installed model. On the other hand, in portable models, a window is often provided on the upper lid so that the recording medium can be viewed from there.

[0003]

However, in the portable disc device, the rotating operation of the recording medium is merely seen through the window, and the recording medium cannot be seen in a dark place. Moreover, since the window is provided in the ceiling portion of the upper lid, the inside cannot be seen from the front.

In view of this, the present invention provides a disc device that allows a recording medium to be confirmed even in a dark place, and that the recording medium can be easily confirmed even from the front of the device.

[0005]

According to a first aspect of the present invention, there is provided an optical disc device in which a disc-shaped recording medium is mounted for recording or reproduction, and an edge of the disc-shaped recording medium mounted inside a cabinet. A window is formed in the cabinet so that a part of the light emitting element can be seen from the outside, and the light emitting element and the light emitted from the light emitting element in the cabinet are substantially opposed to a part of the edge of the disk-shaped recording medium. And a light guide means for guiding the edge portion to be irradiated.

An optical disk device according to a second aspect of the invention is
The light guide means is formed so that the light emitted from the light emitting element is irradiated to the edge portion of the disk-shaped recording medium at a predetermined angle with respect to the line toward the center of the disk-shaped recording medium.

[0007]

According to the first aspect of the present invention, the light emitted from the light emitting element by the light guide means is applied to the edge portion of the recording medium, so that the light is transmitted through the inside of the recording medium and applied to the edge portion. It is emitted from the edge part on the side substantially opposite to the part. Therefore, even in a dark place, the recording medium can be easily confirmed from a window formed in the front of the cabinet, for example.
Further, it is possible to obtain a special visual effect such as emitting light from the edge of the recording medium.

According to the second aspect of the present invention, the light emitted from the light emitting element by the light guide means is applied to a relatively wide area of the edge portion of the recording medium, so that the applied light passes through the recording medium. The emitted light is emitted in a wide range from the edge portion on the side substantially opposite to the edge portion irradiated with the light, and the visual effect can be enhanced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an optical disk device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a CD player 10 according to the present invention.
Shows the appearance of. This CD player 10 can place three CDs 12 on the tray 14 at the same time, and an arbitrary C
D12 is selected and reproduced. The tray 14 is housed in a cabinet 16 enclosing the chassis 22 so as to be drawn out. At the center of the front of the cabinet 16 is a transparent horizontal window 18 so that the inside can be seen.
Is provided. Also, the upper plate portion 1 of the cabinet 16
7 also has a transparent triangular window 19 so that three CDs 12 can be seen.

Next, FIG. 2 showing the inside of the CD player 10
3, the tray 14 has a rectangular plate-shaped base 24 and a CD mounting plate 26 rotatably supported by the base 24. At the center of the base 24, there are recesses 28 having a substantially square shape and four corners having an arc shape. Side 30 of base 24
Is slightly higher than the bottom surface of the concave portion 28, and the front portion 32 and the rear portion 34 are slightly higher than the side portion 30.

A rotary shaft 36 is provided at the center of the recess 28.
And a central portion of a substantially equilateral triangular plate-shaped CD mounting plate 26 is fixed to the rotary shaft 36. The CD mounting board 26 is
The three corners are arcuate, which helps reduce size and weight. In the three corners of the CD mounting board 26, the CD 1
A circular mounting portion 37 for mounting 2 is formed. As a result, a maximum of three CDs 12 are placed on the CD mounting plate 26, and the CD mounting plate 26 is rotated about the rotation shaft 36 by an auto changer mechanism (not shown) so that an arbitrary C
It is possible to select D12. Also, CD
In order to perform clamping of 12 and reading of recorded information, each mounting portion 37 is provided with a notch 38 at a position corresponding to the upper portion of a pickup (not shown).

The arm 4 is provided on the rear side of the chassis 22.
0 is fixed. The arm 40 extends forward in a cantilever shape, and its tip is located on the central portion of the CD 12 arranged in the CD reproducing device. A disc clamper 43 is rotatably attached to the tip of the arm 40. The disc clamper 43 holds the CD 12 with a turntable (not shown) below the tray 14. Then, the CD 12 is rotated by rotationally driving the turntable.

As shown in FIG. 3, the disk clamper 43 has a planar surface in which a part of the circumferential surface is linearly cut with respect to the circumference and the cut surface is mirror-finished. A reflecting surface 44 is formed. The reflecting surface 44 is formed upward at an angle of approximately 45 degrees with respect to the disk surface.

A pickup (not shown) is arranged below the rotated CD 12 so as to be movable in the radial direction of the CD 12, and the information recorded on the CD 12 is read by this pickup. The information signal read here is electrically processed and output as a voice signal or the like.

On the rear side of the arm 40 shown in FIG. 2, an illuminating device 50 for illuminating the CD 12 in the reproducing position is arranged. The lighting device 50 has light emitting elements 51, 51a, 51b (for example, LEDs, laser lights, lamps, etc.) attached to the base 41 of the arm 40, a first optical path portion 52, and a second optical path portion (shown in FIG. 4). . CD player 1
When the power of 0 is turned on, the light emitting elements 51, 51a and 51b emit light. Here, a switch that allows selection of a mode for emitting light from the light emitting elements 51, 51a, 51b and a mode for not emitting light is provided, and the user operates the switch as necessary to cause the light emitting elements 51, 51a, 51b to emit light. It may be controlled.

In FIG. 4 showing the optical path portion, the first optical path portion 5
Reference numeral 2 is integrally formed of a transparent acrylic resin. The first optical path portion 52 has a horizontally long flat plate portion 53 whose tip is formed in an arc shape, and a disc portion 55 provided at the tip of the flat plate portion 53. The disk portion 55 is connected to the upper surface 53a of the flat plate portion 53 and is connected to the outer peripheral surface 55a and the lower surface 53b of the flat plate portion 53, and an inner peripheral surface 55b (not shown) is formed obliquely. Further, a lower surface 55c is formed obliquely on the bottom of the disk portion 55 so that the outer peripheral side is slightly upward. Further, the outer peripheral surface 55a is formed with a convex portion 55d that is curved when viewed from the side. The first optical path portion 52 is arranged so as to entirely cover the upper surface of the arm 40.

A spectroscopic section 56 is formed at the rear end of the flat plate section 53. The spectroscopic unit 56 transmits the light incident from the rear end face 54 facing the illuminating device 50 and transmits the light.
7b, and reflecting surfaces 58a and 58b that are formed so as to be inclined downward so that the incident light is reflected with a tilt toward the lower surface of the flat plate portion 53.
8a and the reflecting surface 58b are substantially V-shaped. This spectroscopic unit 5
6 is integrally formed on the upper surface of the flat plate portion 53, and has a reflecting surface 58a,
Part of 58b is recessed from the upper surface of the flat plate portion 53. The reflecting surfaces 58a and 58b are mirror-finished so that incident light can be efficiently reflected.

Convex side portions 70 are formed on both sides of the flat plate portion 53, and the thin plate-shaped flat plate portion 53 is reinforced by the side portions 70. An ear portion 71 projects from the rear portion of the side portion 70, and a mounting screw 73 is inserted into a hole 72 formed in the ear portion 71.

Although the arm 40 and the first optical path portion 52 are separately provided in this embodiment, the arm 40 and the first optical path portion 52 may be integrally provided.

The second optical path portion 60 shown by the broken line in FIG. 4 is integrally formed of transparent acrylic resin. As shown in FIG. 5, the second optical path portion 60 has two substantially L-shaped light guide portions 61a and 61b.
And a fixing portion 6 for fixing the light guide portions 61a and 61b
It is formed from two. An attachment hole 67 is formed in the fixing portion 62. Here, the light guide portion 61a and the light guide portion 61b are formed symmetrically.

The light guide portions 61a and 61b are formed of L-shaped bottom portions 64a and 64b and beveled column portions 66a and 66b, respectively. The beveled columnar portions 66a and 66b are formed to face each other in an eight-shape with an inclination related to the reflecting surfaces 58a and 58b of the spectroscopic unit 56 of the first optical path unit 52 described above.

The L-shaped bottom portion 64a of the light guide portion 61a has a bottom portion that is thinner on the end face 65a side than on the beveled columnar portion 66a side.
The width of the bottom portion is wider on the end face 65a side than on the angled columnar portion 66a side, and the end face 65a is formed to face outward. Further, a reflection surface 68a is formed on the side opposite to the surface of the L-shaped bottom portion 64a facing the first optical path portion 52. The light guide portion 61a has an L-shape so that the light incident on the upper surface of the oblique columnar portion 66a can be emitted from the end surface 65a of the L-shaped bottom portion 64a.
The reflecting surface 6 is formed on the joint portion between the character bottom portion 64a and the beveled prism portion 66a.
3a is formed. The reflecting surfaces 63a and 68a, the L-shaped bottom portion 64a, and the inclined columnar portion 66a are mirror-finished in order to efficiently guide light without irregular reflection. Although the description is omitted, the light guide portion 61b also includes the light guide portion 6
It is configured similarly to 1a.

As shown in FIG. 2, the first optical path portion 52 has a screw 7 inserted into a hole 72 formed in the ear portion 71.
3 is screwed into a female screw (not shown) formed on the base portion 41 of the arm 40 and fixed to the upper surface of the arm 40. The light reflected by the reflecting surfaces 58a and 58b is reflected by the arm 40.
The light guide portion 61 that constitutes the second optical path portion 60 without being shielded by
A square opening 42 is formed in the arm 40 at a position facing the spectroscopic unit 56 so that the beam enters the oblique-angled columnar units 66a and 66b of a and 61b.

The second optical path portion 60 includes the slanted prismatic portions 66a, 66a.
A screw (not shown) inserted into the mounting hole 67 of the fixing portion 62 is inserted into the opening 42 provided in the arm 40, and a screw (not shown) formed in the arm 40 is shown in FIG. It is screwed in and is fixed to the lower surface of the arm 40.

The upper surfaces of the oblique-angled columnar portions 66a and 66b are provided on the flat plate portion 53 of the first optical path portion 52, and the spectroscopic portion 5 is formed.
6 has a flat plate portion 53 at a position facing the reflecting surfaces 58a and 58b.
Is mounted parallel to and close to the lower surface of the CD 12, and its end surfaces 65a and 65b are mounted so as to face the edge of the CD 12.

This example is constructed as described above, and the light emitted from the light emitting element 51 is incident from the rear end face 54 of the flat plate portion 53 of the first optical path portion 52. Most of the light incident on the flat plate portion 53 passes through the flat plate portion 53 and passes through the disk portion 5.
The light is reflected downward at 5 and is irradiated onto the upper surface of the CD 12 and the upper surface of the disc clamper 43. In addition, the light emitting element 51a,
The light emitted from 51b is applied to the rear end face 5 of the flat plate portion 53.
It is incident from 4. Most of the light incident on the flat plate portion 53 is reflected by the reflecting surfaces 58a and 58b of the spectroscopic portion 56 of the flat plate portion 53.
Is reflected toward the lower surface of the flat plate portion 53, and a part thereof is reflected by the flat plate portion 53.
And is guided to the disc portion 55.

Now, the optical path of the light incident on the rear end face 54 of the flat plate portion 53 will be described with reference to FIG. In the figure, the light emitting elements 51a and 51b and the reflecting surface 58 of the spectroscopic unit 56 are shown.
The a and 58b and the light guide portions 61a and 61b are symmetrical, and only the optical path of the light emitted from the light emitting element 51a will be described below.
The description of the optical path of the light emitted from is omitted.

The light emitted from the light emitting element 51a and incident on the rear end face 54 is reflected with an inclination toward the outside in the lower surface direction of the flat plate portion 53 because the reflecting surface 58a is formed to be inclined. Since the beveled columnar portion 66a has an inclination along the optical path of the reflected light, the light efficiently incident on the beveled columnar portion 66a can be efficiently emitted.
And is reflected again by the reflecting surface 63a.

The light reflected by the reflecting surface 63a is the end surface 65a.
However, since the thickness of the L-shaped bottom portion 64a is thinner on the end face 65a side than on the beveled columnar portion 66a side, part of the light reflected by the reflection surface 63a is part of the L-shaped bottom portion 64a.
The light is reflected slightly upward by the reflecting surface 68a of a and is emitted from the end surface 65a so as to be condensed on the edge of the CD 12.
Further, since the width of the L-shaped bottom portion 64a is formed wider on the end face 65a side than on the oblique-angled columnar portion 66a side, the edge portion of the CD 12 is widely irradiated.

Next, FIGS. 6, 7 and 8 show optical paths including the CD 12. In FIG. 6, the light that has passed through the flat plate portion 53 of the first optical path portion 52 is the convex portion 55 d of the disc portion 55.
The light is diffusely reflected by and refracted downward and obliquely downward, and the amount of light leaking in other directions is reduced. Further, since the outer peripheral surface 55a has a circular shape and further has the convex portion 55d, the shapes of the light emitting elements 51, 51a, 51b cannot be clearly seen from the window 18.

The light diffusely reflected by the convex portion 55d is diffused, and the light is irradiated in a wide range. That is, light is dispersed not only in the front but also in the side and the rear. A portion of the outer peripheral surface 58a below the convex portion 55d has a linear shape, and
The light diffusely reflected by d and refracted downward travels linearly,
The upper surface of the CD 12 is irradiated with light from the lower surface 55c.

The upper portion of the inner peripheral surface 55b is smoothly connected to the lower surface 53b of the flat plate portion 53 so that the light can be efficiently guided to the disc portion 55. Further, since the lower portion of the inner peripheral surface 55b is formed in a substantially vertical shape, the light is emitted vertically to the upper surface of the disk clamper 43. Since the reflecting surface 44 of the disc clamper 43 is formed to be inclined upward by approximately 45 degrees, the light vertically emitted from the disc portion 55 is reflected substantially horizontally toward the outside of the CD 12.
Since the reflecting surface 44 is formed in a flat shape, the light reflected here does not spread much in the lateral direction and travels in a substantially linear shape.

Most of the light emitted from the light emitting elements 51a and 51b is reflected by the reflection surfaces 58a and 58b and the reflection surfaces 63a and 63b of the spectroscopic unit 56 and emitted from the end surfaces 65a and 65b which are horizontal to the surface of the CD 12. . The light emitted is C
The edge portion of D12 is irradiated, and the light is emitted in the direction of the window 18 from the edge portion that is substantially opposite to the edge portion that is transmitted through the inside of the CD 12 and is irradiated.

Further, as shown in FIG. 7, the reflecting surfaces 68a,
The light emitted from the end faces 65a and 65b after being reflected slightly upward by 68b is totally reflected inside the CD 12 and travels, and similarly from the edge portion substantially opposite to the edge portion irradiated with the light from the window 18. Is emitted in the direction.

Next, as shown in FIG. 8, light is emitted from the end face 65a at a predetermined angle to the left and right with respect to the line toward the center of the CD 12. This emitted light is a CD
Widely irradiated to the edge of 12 and refracted at the edge, CD12
Is incident on the inside. The incident light is refracted at a wide range of edge portions that are substantially opposite to the edge portion that is transmitted through the inside of the CD 12 and is irradiated, and is emitted toward the window 18.

Therefore, since the upper surface of the CD 12 is irradiated with the light emitted from the disk portion 55 of the first optical path portion 52, the CD 12 can be easily confirmed through the window 19 formed on the upper surface of the cabinet 16 even in a dark place. In addition to being able to do so, the first optical path portion 52 itself can also be seen as shining, so that the user can be visually interested. In addition, the second optical path unit 6
CD emitted by the light emitted from the end faces 65a and 65b of 0
By illuminating the edge portions of 12, it seems that light is emitted from a wide edge portion that is substantially opposite to the illuminated edge portion, which can be easily confirmed from the window 18 on the front surface of the cabinet 16. be able to.

Further, when the CD 12 rotates, the disc clamper 43 also rotates, so that the disc clamper 4
The light reflected from the reflecting surface 44 that reflects the light emitted to the upper surface of 3 rotates like a lighthouse light around the rotation axis of the CD 12, so the light appears to be blinking from the window 18. . Further, this blinking cycle is synchronized with the rotation of the CD 12, and the rotation of the CD 12 is faster on the inner circumference side and slower on the outer circumference side. Therefore, by confirming the blinking cycle, the rotation operation of the CD 12 can be easily confirmed. In addition to being able to do so, the time from the start of reproduction can be roughly estimated.

It should be noted that in the above-described embodiment, different light emission colors of the light emitting elements are used, the light emission color is switched at each time, or the light emission color is switched in association with the operation mode to obtain a more special visual effect. In addition to the above, the operation mode can be clearly determined. Also,
If the blinking cycle of the light emitting element is controlled in relation to the rotation operation of the CD, the same effect as the light reflected by the reflecting surface 44 of the disk clamper 43 can be obtained.

By the way, in the above-mentioned embodiment, the edge portion of the CD 12 is irradiated by using the spectroscopic section 56 of the first optical path section 52 and the second optical path section 60 as the light guide means.
Of course, the same effect can be obtained by using an optical fiber or the like as the light guiding means. Further, the present invention is not limited to the case where three CDs 12 can be placed on the tray 14 at the same time as in the above-described embodiment, and the present invention is also applicable to a model in which only one CD is placed on the tray or a portable type. Applicable to

[0041]

According to the first aspect of the invention, the light emitted from the light emitting element by the light guide means is applied to the edge portion of the recording medium, and the light is transmitted through the inside of the recording medium and is applied to the edge portion. Since the light is emitted from the edge portion on the side substantially opposite to the portion, the recording medium can be easily confirmed even in a dark place through a window formed in the front of the cabinet, for example. Further, it is possible to obtain a special visual effect of emitting light from the edge of the recording medium.

According to the second aspect of the invention, the light emitted from the light emitting element by the light guide means is applied to a relatively wide area of the edge portion of the recording medium, so that the applied light passes through the recording medium. Then, the radiation is emitted in a wide range from the edge portion on the side substantially opposite to the edge edge irradiated, and the visual effect can be enhanced.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of an embodiment of an optical disk device according to the present invention.

FIG. 2 is a plan view showing the inside of the embodiment.

FIG. 3 is a reflection surface 44 formed on the disk clamper 43.
FIG.

FIG. 4 is a perspective view showing a configuration of a first optical path portion 52.

FIG. 5 is a perspective view showing a configuration of a second optical path portion 60.

FIG. 6 is a side view showing an optical path including a CD.

FIG. 7 is a side view of a second optical path portion showing an optical path including a CD.

FIG. 8 is a plan view showing an optical path including a CD.

[Explanation of symbols]

10 CD player 12 CD 16 cabinets 18 windows 19 windows 43 Disc clamper 44 Reflective surface 51, 51a, 51b Light emitting element 52 First optical path unit 55 disc 56 spectroscope 58a, 58b Reflective surface 60 Second optical path 63a, 63b Reflective surface 65a, 65b end faces

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 61-158698 (JP, U) Rikai 61-90095 (JP, U) Rikai Hei 7-19897 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) G11B 33/02 503 G11B 33/10

Claims (2)

(57) [Claims] 1. An optical disk device for recording or reproducing data by mounting a disk-shaped recording medium, wherein a window through which a part of an edge of the disk-shaped recording medium mounted inside a cabinet can be seen from outside is provided. It is formed in a cabinet, and a light emitting element and light emitted from the light emitting element are applied to the inside of the cabinet so as to irradiate a portion of an edge portion substantially opposite to a part of the edge portion of the disk-shaped recording medium. An optical disk device comprising: a light guiding unit for guiding the optical disk. 2. The light guide means irradiates the edge of the disk-shaped recording medium with light emitted from the light-emitting element at a predetermined angle to the left and right with respect to a line toward the center of the disk-shaped recording medium. The optical disk device according to claim 1, wherein the optical disk device is formed as described above.