JPH04328383A - Optical disk sub system device - Google Patents

Abstract

PURPOSE:To maintain the performance and the reliability of an optical disk device by displaying the adequate exchangeable period of an introduced air purifying filter and the forgetting of attaching the filter. CONSTITUTION:A fin 8 rotating by introduced air pressure is provided on the inside of the optical disk device. Photo-interrupters 11a and 11b generating an electric signal at the time of being shielded light by a light shielding plate 8a provided on the fin 8 are provided. When the introduced air quantity is little by the clogging of the filter 7, condition is detected by the photo- interrupter 11a, when much by the forgetting of attaching the filter, the condition is detected by the photo-interrupter 11b, a display device 12 is operated and the condition of the filter is displayed. Since the adequate exchangeable period is informed, the useless exchange of the filter is eliminated and economic and hourly loss is prevented, further, the soiling of the inside of the device by the forgetting of attaching the filter is prevented, as well.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk subsystem device.

0002

[Prior Art] A conventional optical disk subsystem device is
In order to prevent the temperature of the device from rising, a fan motor is used to introduce outside air into the device for cooling.The air introduced into the device is also used to prevent contamination inside the optical disk device.
In particular, in order to prevent contamination of the lens of the optical head, the structure is such that when introducing the device into the device, it passes through a filter installed at the inlet to remove dust in the air before being introduced into the device. They had no means of detecting the state of the air.

0003

[Problems to be Solved by the Invention] When the above-mentioned conventional optical disk subsystem is used in a natural environment, the filter for purifying the introduced air gets clogged due to dust in the air, reducing the flow rate of the introduced air. However, if the device is used for a long time, the air flow rate will eventually decrease to an insufficient amount to cool the inside of the device, and the device will become inoperable, so the filter must be replaced. Since it does not have a mechanism to detect the condition, there is an economic loss due to early replacement of the filter because it is not known whether the filter is clogged or if the filter is used in an environment where there is particularly a lot of dust in the air. If the device becomes clogged early or if there is a blockage near the air inlet that obstructs air inflow, the amount of air inflow is insufficient and the device becomes inoperable during operation. If you forget to install a filter and introduce air containing dust, there is a danger that dust will adhere to the lens of the optical head and cause the device to malfunction. The disadvantage is that the initial performance and reliability of the device cannot be maintained.

[0004] An object of the present invention is to provide an optical disc subsystem device that eliminates such drawbacks.

[0005]

[Means for Solving the Problems] The present invention provides an optical disk device that uses an optical disk medium to read and write information, a control device that controls the optical disk device, a power supply device that drives the system, and an entire subsystem. In an optical disk subsystem device consisting of a fan motor for feeding external air in order to prevent a temperature rise, and a filter for purifying the external air, there is a member operated by the pressure of the air introduced into the introduction air flow path. The apparatus is characterized in that it incorporates an introduced air pressure detection device that includes a device that generates an electric signal according to the operation of the member, and a display device that displays a display based on the electric signal.

[0006] Further, the above-mentioned member is rotatably attached to the vicinity of the fan motor using a support pin at a position where it receives the pressure of the air blown by the fan motor, and when it is not receiving pressure, it is rotated by a spring. Preferably, the device comprises a fin that is returned to its home position and is provided with a light shielding plate, and the device comprises at least one photointerrupter that generates the electrical signal when the light shielding plate blocks the light flux. be.

[0007]

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

FIG. 1 is a partially sectional side view of the present invention, FIG. 2 is a partially sectional side view when the device is operating in a normal state, FIG. 3 is a partially sectional side view when the device is operating in an abnormal state, and FIG. , is a block diagram of an electrical circuit.

First, the configuration of the optical disk subsystem device of this embodiment will be explained with reference to FIG. Optical disc medium 1
An optical disk device 2 that reads and writes information using The fan motor 5 is covered by the subsystem housing 6, and the fan motor 5 is attached to an air inlet 6a provided at the rear of the subsystem housing 6. The filter 7 is attached to the outside of the air inlet 6a. The fin 8 is rotatably attached to the fan motor 5 by a support pin 9 at a position where it receives the pressure of the air blown by the fan motor 5, and when it is not receiving pressure, it is fixed by a spring 10. be returned to position. The fin 8 is provided with a light shielding plate 8a, which blocks the light beams from the photointerrupters 11a and 11b when the fin 8 rotates. Subsystem housing 6
A display device 12 is attached to the surface of the subsystem housing 6, and the structure is such that air introduced through an insertion slot 6b for the optical disk medium 1 provided on the surface of the subsystem housing 6 is discharged to the outside.

As shown in FIG. 4, a photointerrupter 1
1a and 11b are connected to a control device 3, and the control device controls the display device 12 using signals from these photointerrupters.

Next, the operation of this optical disk subsystem device will be explained. When the filter 7 is in a normal state when the device is in operation, the fins 8 are rotated by the pressure of the air blown by the fan motor 5 as shown in FIG.
Rotate to a position where the light beam b is not blocked. At this time, no electrical signals are generated from the photointerrupters 11a and 11b, and the display device does not display any abnormalities such as filter clogging or forgetting to attach the filter.

As shown in FIG. 3(a), when the filter 7 becomes clogged with dust in the air, the amount of air blown by the fan motor 5 decreases, and the wind pressure becomes low, the fins 8 are moved by the force of the spring 10. The light shielding plate 8a is rotated from the normal position to the normal position side, and the photointerrupter 11
Move to a position where the beam of light a is blocked. When the light beam is blocked, the foil interrupter 11a generates an electric signal, and the display device 12 via the control device 3 displays the air introduction state, that is, an insufficient amount of introduced air due to filter clogging.

As shown in FIG. 3(b), when the filter 7 is not attached and the amount of air blown by the fan motor 5 increases and the wind pressure increases, the fins 8 are pushed further from the normal position and the light shielding plate 8a is photo interrupter 11b
is rotated to a position that blocks the light beam. The photointerrupter 11b generates an electric signal when the light beam is blocked, and the display device 12 via the control device 3 displays the air introduction state, that is, the introduction of air containing dust due to forgetting to attach the filter.

[0014]

As explained above, the present invention constantly monitors the clogging state of the introduced air purifying filter attached to the optical disk subsystem device using the air pressure introduced into the device. It is possible to prevent the optical disk subsystem from becoming unusable not only due to a lack of introduced air due to filter clogging, but also from being unable to use the optical disk subsystem due to an insufficient amount of introduced air due to unfavorable installation environment conditions. Not only can reliability be improved, but the appropriate time to replace the introduced air purifying filter can be known, eliminating unnecessary filter replacement and preventing economic and time losses. Further, it is possible to prevent the lens of the optical head from becoming dirty due to the introduction of dust-laden air due to forgetting to attach the filter, and there is an effect that the initial performance and reliability of the optical disk device can be maintained.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view of the present invention.

FIG. 2 is a partially sectional side view when the device is operating in a normal state.

FIG. 3 is a partially sectional side view when the device is operating in an abnormal state.

FIG. 4 is a block diagram of an electric circuit.

[Explanation of symbols]

1 Optical disk medium 2 Optical disk device 3 Control device 4 Power supply device 5 Fan motor 6 Subsystem housing 7 Filter 8 Fin 8a Light shielding plate 9 Indication pin 10 Spring 11a, 11b Photo interrupter 12 Display device

Claims (2)

[Claims] 1. An optical disk device for reading and writing information using an optical disk medium, a control device for controlling the optical disk device, a power supply device for driving the system, and a system for preventing temperature rise of the entire subsystem. In an optical disk subsystem device consisting of a fan motor for feeding external air and a filter for purifying the external air, there is a member that is operated by the pressure of the air introduced into the introduction air flow path, and an electrical signal is generated by the operation of the member. What is claimed is: 1. An optical disc subsystem device, characterized in that it incorporates an inlet air pressure detection device that includes a device that generates an electric signal, and a display device that displays an image based on the electric signal. 2. The member is rotatably mounted near the fan motor with a support pin at a position where it receives pressure from the air blown by the fan motor, and when it is not receiving pressure, it is rotated by a spring. The device comprises a fin that is returned to its home position and is provided with a light shielding plate;
An optical disc subsystem device comprising at least one photointerrupter that generates the electrical signal when the light shielding plate blocks the light flux.