JP2002015561A - Information recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information recording/reproducing device which cuts off the heat from an electric board with respect to a mechanism unit part, efficiently suppresses the temperature rising of the inner part and surely blocks the generation of thermal adverse effects, without having to change a basic constitution comprising a combination of the mechanism unit part, the electric board and a frame. SOLUTION: This information recording/reproducing device is provided with the mechanism unit part 1, which houses and drives an information recording/ reproducing medium, the electric board 2 which is disposed so as to leave a prescribed gap with the mechanism unit part and allows electrical components to be mounted thereon and the frame 10 which supports the electric board and the mechanism unit part and integrally utilizes the same. Therein, the frame which cuts off the heat, which is dissipated from the mechanism unit part and the electric board before the heat attains to each other is interposed and the inner heat which is possessed by the frame by itself is dissipated to the outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus using, for example, a DVD or a CD, and more particularly to an improvement in a heat radiation structure inside the apparatus.

[0002]

2. Description of the Related Art An information recording / reproducing apparatus (hereinafter simply referred to as a drive) for recording and reproducing information by driving an information recording / reproducing medium such as a disk such as a DVD or a CD is known.
The cross-sectional structure is schematically shown in FIG. That is,
Reference numeral 1 denotes a mechanism unit, which has a mechanism for accommodating a disk such as a DVD or a CD so as to be removably inserted therein and for rotating the disk. Reference numeral 2 denotes an electric board on which a large number of electric and electronic components are mounted and which includes a printed wiring circuit. The electric board 2 is electrically connected to an external device (not shown) such as a control unit of a personal computer and the mechanism unit 1. Connected.

Reference numeral 3 denotes a frame, which surrounds and protects the electric board 2 and is integrally connected to the mechanism unit 1 via a vibration isolating member (not shown) to constitute a drive.

[0004] Both sides of the frame 3 are attached and fixed to the above-mentioned personal computer body via attachments. Therefore, the drive itself is detachably mounted on the personal computer body.

[0005]

The drive is constructed as described above. In particular, it is necessary to employ a more efficient heat radiation structure to prevent the temperature inside the drive from increasing, in order to maintain the performance. Is important.

That is, for example, in a DVD-RAM drive, the allowable maximum temperature of a disk is set to 60 ° C., which is extremely low as compared with the allowable temperatures of other components such as an LSI mounted on the electric board 2. I have.

Therefore, the temperature rise of the mechanism unit 1 for driving the inserted disk must be suppressed as much as possible, and an open structure is desirable in consideration of only the heat radiation efficiency.

However, since the intrusion of dust or the like into the interior of the vehicle significantly impairs the drive accuracy, it is necessary to provide a completely sealed structure to take measures against dust. Then, if a completely sealed structure is used, the heat radiation efficiency will be impaired.

In the conventional configuration, the frame 3 is disposed on a mounting portion of the personal computer as a frame supporting the entire drive, and the mechanism unit 1 and the electric board 2 are opposed to each other via a gap for forming the air layer 4. It has a structure to do.

Therefore, the heat radiation from the mechanism unit 1 is hindered by the electric board 2 and the temperature cannot be reduced. In addition, the power consumption of the electric board 2 is larger than that of the other components, and the heat radiation accompanying the power consumption is remarkable. Therefore, the internal temperature of the mechanism unit 1 further increases due to the heat radiation of the electric board 2.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a mechanism unit,
Without changing the basic configuration consisting of the combination of the electric board and the frame, heat radiation from the electric board and the mechanism unit is cut off from each other, and the internal temperature rise is efficiently suppressed, resulting in a bad thermal effect. It is an object of the present invention to provide an information recording / reproducing apparatus for reliably preventing the occurrence of the information.

[0012]

According to the present invention, there is provided a mechanism unit for accommodating and driving an information recording / reproducing medium and a predetermined gap between the mechanism unit and the mechanism unit. In an information recording / reproducing apparatus including an electric board on which electronic components and the like are mounted and a frame supporting the electric board and the mechanical unit and forming an integrated unit, the information is reproduced from the mechanical unit and the electric board. A heat shielding means is provided for interrupting heat before the heat reaches the electric board and the mechanism unit.

According to a second aspect of the present invention, in the information recording / reproducing apparatus according to the first aspect, the heat shielding means is interposed between the mechanism unit and the electric board to block heat radiated from the mechanism unit and the electric board. And the above-mentioned frame, which radiates the heat held by itself, to the outside.

According to a third aspect of the present invention, in the information recording / reproducing apparatus according to the second aspect, the frame and the mechanism unit are mounted with a space therebetween, and the space is a flow passage through which external air flows. And

[0015] Claim 4 is Claim 2 and Claim 3
In the information recording / reproducing apparatus according to any one of the above, the frame has a set screw portion for attaching an external device and transferring heat of the frame itself to the external device.

By adopting the means for solving the above problems, heat radiation from the electric board and the mechanism unit can be mutually transmitted without changing the basic structure consisting of the combination of the mechanism unit and the electric board and the frame. In this case, the internal temperature rise is efficiently suppressed, and the occurrence of adverse thermal effects is reliably prevented.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of an information recording / reproducing apparatus, for example, a DVD-RAM (CD is also possible) drive, FIG. 2 is an exploded perspective view of the drive, and FIG. 3 is a schematic sectional view of the drive. .

In FIG. 1, reference numeral 1 denotes a mechanism unit, which is a DVD.
(A CD is also possible.) A storage section a for storing a disk (information recording / reproducing medium) in a removable manner, a mechanism section b for driving the disk to rotate, and a cover section c for covering the storage section a and the mechanism section b
And are integrated into a single unit.

A frame 10 is provided on the lower surface side of the mechanism unit 1 with a predetermined gap as a heat shielding means, as described later. The frame 10 is a sheet metal product made of the same material as that of the related art and having the same thickness, but has a different cross-sectional shape as described later.

That is, the frame 10 has a bent piece portion 1 in which most of the both sides along the longitudinal direction are bent downward.
It is 1. One end of each of the two sides and the vicinity thereof and the vicinity of the other end are formed as one piece 12
Are provided integrally.

Except for one end on both sides of the piece 12 formed upright, those near the one end and the other end are cut and raised in a triangular shape, and these are called set screw portions. These set screw portions 12 are directly attached and fixed to the attachment portion of the personal computer body 20 via set screws.

Reference numeral 2 denotes an electric board on which a large number of electronic parts and electric parts are mounted and a printed wiring circuit is provided, as in the prior art. It is still connected electrically.

In this case, the electric board 2 is disposed on the lower surface side of the frame 10 at a predetermined interval from the frame, and furthermore, the electric board 2 is bent to the lower side of the frame 10 by the both side pieces 11 so that the electric board 2 is separated from the upper surface. Both sides are enclosed.

The lower side of the frame 10 is closed by a bottom frame 13, and a space is formed between the frame 10 and the bottom frame 13 so as to be substantially sealed. In this space, the electric board 2 is housed and fixed. You.

The mechanism unit 1 and the frame 1
0 and frame 10 and electric board 2 and bottom frame 1
3, a vibration isolating member (not shown) is interposed, and these are integrally connected to constitute a drive.

Thus, the disk is stored in the mechanism unit 1 and driven to rotate to record or read / reproduce information. With these actions, the electric components mounted on the electric board 2 generate heat and dissipate to the surroundings.

The heat from the electric board 2 is cut off by the frame 10 which is a heat shield, and it is difficult to reach the mechanism unit 1. In other words, the mechanism unit 1 is the electric board 2
It is less affected by heat and does not cause a rise in internal temperature.

Further, with the rotation of the disk in the mechanism unit 1, heat is radiated from the unit itself.
However, this heat is blocked by the frame 10 before reaching the electric board 2, and does not have a thermal effect on the electric board 2.

In addition, the frame 10 and the mechanism unit 1
Is provided with a predetermined gap, and a flow passage 14 through which external air passes is formed in this gap, so that a so-called well-ventilated structure is obtained.

Thus, even if the heat generated in the mechanism unit 1 attempts to reach the frame 10, the flow path 1
4 is interrupted by the convection of the external air which is directed to minimize the thermal effects.

The frame 10 does not block the heat radiation from the mechanism unit 1 and the electric board 2 to prevent the influence of heat on each other, but inevitably increases the temperature by absorbing the heat from each. .

In particular, the mechanism unit 1 radiates a large amount of heat from the center.
Since the outside air flow passage 14 is formed between the outside air passage and the air passage, the heat influence on the frame is small.

If the frame 10 passes through the flow passage 14
However, since the frame is not open at the center and is a single-sided plate, at least the heat that reaches the electric board 2 is completely blocked.

Further, since the electric board 2 is accommodated in a closed space formed by the frame 10 and the bottom frame 13, the frame 10 is affected by heat radiation from the electric board 2. However, since the peripheral portion of the frame 10 is provided with a predetermined gap with respect to the mechanism unit 1, heat is relatively easily radiated and the temperature rise is small.

On the other hand, the central portion of the frame 10 except the peripheral portion tends to accumulate heat and hardly dissipate heat, and thus tends to have a higher temperature than the peripheral portion. However, as described above, since the frame 10 is a one-sided plate body and has no opening at the center, the heat radiation from the electric board 2 reliably reaches the mechanism unit 1.

Then, the heat absorbed in the central portion of the frame 10 is transmitted to this peripheral portion and radiated here, so that the temperature rise of the entire frame 10 is suppressed. Further, since both side portions of the frame 10 are bent downward, heat is transmitted from the peripheral portion to the bent piece portion 11 and radiated.

Set screws 12 are formed upright on both sides of the frame 10 and are fixed to the mounting portion of the personal computer body 20, so that heat is transmitted from the peripheral portion of the frame 10 to the personal computer body 20 through the set screw parts 12. To dissipate heat.

Eventually, by providing the frame 10 between the mechanism unit 1 and the electric board 2, the frame 10 blocks heat generated from the mechanism unit 1 and the electric board 2 from each other, and from the inside to the periphery. Extracts heat and dissipates it to the outside, effectively suppressing temperature rise inside the drive.

[0039]

As described above, according to the present invention, the heat radiation from the electric board and the mechanism unit can be cut off and the internal temperature rise can be efficiently suppressed without changing the basic structure. This has the effect of reliably preventing the occurrence of adverse thermal effects.

[Brief description of the drawings]

FIG. 1 is a perspective view of a DVD-RAM drive as an information recording / reproducing device according to an embodiment of the present invention.

FIG. 2 is an exemplary exploded perspective view of the drive according to the embodiment;

FIG. 3 is a schematic sectional view of the drive according to the embodiment.

FIG. 4 is a schematic sectional view of a conventional drive.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mechanical unit part, 2 ... Electric board, 10 ... Frame (insulation means), 14 ... External air flow path, 20 ... PC body (external device), 12 ... Set screw part.

Claims (4)

[Claims] A mechanism unit for accommodating and driving an information recording / reproducing medium; an electrical board disposed with a predetermined gap from the mechanism unit and on which electronic components and the like are mounted; An information recording / reproducing apparatus, comprising: a frame that supports a mechanism unit and forms an integrated unit; a heat shield that blocks heat radiated from the mechanism unit and the electric board before reaching the electric board and the mechanism unit. An information recording / reproducing apparatus characterized by comprising means. 2. The heat shielding means is interposed between the mechanism unit and the electric board, intercepts heat radiated from the mechanism unit and the electric board, and radiates heat retained by itself to the outside. The information recording / reproducing apparatus according to claim 1, wherein the frame is a frame to be recorded. 3. The information recording / reproducing apparatus according to claim 2, wherein the frame and the mechanism unit are mounted with a space therebetween, and the space is a flow passage through which external air flows. 4. The frame for mounting an external device,
4. The information recording / reproducing apparatus according to claim 2, further comprising a set screw portion for transferring heat of the frame itself to an external device.