JP2524425B2 - Cooling mechanism - Google Patents

Description

The present invention relates to a cooling mechanism, and more particularly to a cooling mechanism for an optical disk subsystem device.

[Prior Art] Conventionally, a cooling mechanism of an optical disk subsystem device of this type uses a fan motor to cool the device by introducing external air into the device to prevent temperature rise. The introduced air prevents dirt inside the optical disk device,
Especially when installing inside the device to prevent contamination of the optical head,
It has a structure that it is introduced into the device after passing through the filter provided at the inlet and removing dust in the air.
In particular, it had no means for detecting the state of the introduced air.

[Problems to be Solved by the Invention]

When the cooling mechanism of the conventional optical disk subsystem device described above is used in a natural environment, dust in the air causes the filter for purifying the introduced air to be clogged and the introduced air flow rate decreases, resulting in a long time. When it is used, the flow rate of air inside the device is reduced to an insufficient level, and the device becomes inoperable, so it is necessary to replace the filter. Since it does not have a built-in mechanism, it does not know the clogging condition of the filter and there is an economic loss for early replacement,
Also, especially when used in an environment where there is a lot of dust in the air, the filter may become clogged early and the data may be destroyed if the device becomes inoperable during operation. There is a drawback in that the performance and reliability of can not be maintained.

[Means for solving the problem]

The present invention includes an air inlet for introducing cooling air and an air outlet for discharging cooling air in a housing, and a fan for introducing air from the air inlet and a filter for purifying air introduced from the air inlet. In the cooling mechanism, the fin operated by the introduction air pressure provided in the flow path of the air introduced from the air introduction port, the detector for detecting the operation of the fin, and the signal received from the detector And a display device for displaying whether or not air is normally introduced from the air inlet.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

1 is a side sectional view of an embodiment of the present invention, and FIGS. 2 and 3 are partial sectional views of the fin 8 shown in FIG. 1 and its surroundings in a normal state and a partial sectional view in an abnormal state, respectively.
FIG. 4 is a block diagram of the electric circuit of the embodiment shown in FIG.

First, the configuration of the optical disk subsystem device of this embodiment will be described with reference to FIG.

An optical disc device 2 that uses the optical disc medium 1 to read and write information, a control device 3 that controls the optical disc device 2, a power supply device 4 that drives the system, and an external device to prevent the temperature rise of the entire subsystem. The fan motor 5 for sending in air is housed in the subsystem housing 6, and the fan motor 5 is connected to the air inlet 6a provided at the rear part of the subsystem housing 6 and attached to the outside air. The filter 7 for purifying the air is an air inlet 6a
Is attached to the outside of.

The fin 8 is rotatably supported by the support pin 9 and is mounted in the vicinity of the fan motor 5 at a position where the pressure of the air blown by the fan motor 5 is received. A spring 10 for is attached. The fin 8 is provided with a light-shielding plate 8a, and the photo-interrupter 11 is attached so that the light-shielding plate 8a shields the light flux of the photo-interrupter 11 when the fin 8 is rotated, and a display is provided on the surface of the subsystem housing 6. Bowl 12
Is installed, and the air introduced from the air introduction port 6a is discharged to the outside from the insertion port 6b of the optical disk medium 1 provided on the entire surface of the subsystem housing 6.

 Next, the operation of this device will be described.

When the filter 7 is in a normal state during operation of this device, the fan 8 is connected to the fan motor 5 as shown in FIG.
The light shielding plate is rotated by the pressure of the air blown by the
8a moves to a position where the light flux of the photo interrupter 11 is blocked. Further, as shown in FIG. 3, when the filter 7 becomes clogged with dust of air and the amount of air blown by the fan motor 5 decreases and the wind pressure decreases, the fins 8
Is rotated from its normal position by the force of the spring 10, but the light shielding plate 8a does not move to the position where the light flux of the photo interrupter 11 is shielded. The operation of the fins 8 causes the photo interrupter 11 to generate an electric signal, and the electric circuit shown in FIG. 4 causes the display 12 to display the state of the amount of cooling air blown by the fan motor 5 via the control device 3 via the control device 3.

〔The invention's effect〕

As described above, according to the present invention, the clogging state of the cooling air purification filter attached to the optical disk subsystem device or the like is constantly monitored by the air pressure introduced into the device. It is possible to prevent the optical disk subsystem device from becoming unusable due to
Not only can the reliability of the optical disk subsystem device be improved, but also an appropriate replacement period of the cooling air purification filter can be cut, so that unnecessary replacement of the filter can be eliminated, and there is an effect of eliminating economical and time loss.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention, and FIGS. 2 and 3 are partial sectional views of the fin 8 shown in FIG. 1 and its surroundings in a normal state and in an abnormal state, respectively. FIG. 4 is a block diagram of the electric circuit of the embodiment shown in FIG. 1 ... Optical disc medium, 2 ... Optical disc device, 3 ...
Control device, 4 ... Power supply device, 5 ... Fan motor, 6 ...
… Subsystem housing, 6a …… Air inlet, 6b …… Insert, 7 …… Filter, 8 …… Fin, 8a …… Light shield, 9
...... Support pin, 10 ...... Spring, 11 ...... Photo interrupter, 12 ...... Display.

Claims (1)

(57) [Claims] 1. A housing is provided with an air inlet for introducing cooling air and an air outlet for discharging it, and a fan for introducing air from the air inlet and a filter for purifying air introduced from the air inlet are provided. In the cooling mechanism, the fin provided in the flow path of the air introduced from the air introduction port and operated by the introduced air pressure, the detector for detecting the operation of the fin, and the signal received from the detector A cooling mechanism comprising: a display device for displaying whether or not air is normally introduced from an air inlet.