JP2000349478A - Fan control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fan control device capable of improving reliability of an information processing unit and prevent breakdowns or troubles. SOLUTION: This device is provided with a rechargeable battery 4, a timer 5 having a plurality of timer output signals, and a shutter or a cover for automatically covering up the gap of a fan 8. Since the fan 8 is back-up controlled by the timer 5, it does not impair its cooling function at the time of power failure or unexpected power source interruption, and can take countermeasures against abnormalities. In the timer 5, when the power source is interrupted, an internal counter starts and outputs two signals having time differences. Further, the device is provided with a transistor 6 for turning on/off the voltage of the battery 4 by control of the timer 5 and a diode 7 for switching between the voltage from a power source 2 and the supply voltage of the battery 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan control device, and more particularly to a fan control device having a shutter for preventing intrusion of dust and the like from the outside.

[0002]

2. Description of the Related Art The present invention relates to control of an information processing apparatus, particularly, a fan apparatus, which is designed to prevent a failure and a trouble of the information processing apparatus. Generally, when the power is turned off, the fan control unit of such an information processing apparatus also stops the air blowing in conjunction with the power supply. After the fan stops, a gap is created between the fans. Therefore, dust or insects may enter the gap caused by stopping the fan from the outside, which may cause a failure or trouble. As is clear from the comparison of FIG. 2 which is a diagram of an embodiment of the present invention, the technique disclosed in the prior art has a configuration in which a backup means is provided for a fan gap and the fan gap is automatically closed. I do not have. For this reason, after the fan stops, dust and insects can enter from outside. As a result, there is a disadvantage that a failure or a trouble occurs.

[0003]

As described above, in the prior art, since there is no backup means for the gap between the fans, dust and insects can enter and cause a failure or trouble. There was a problem.

[0004] Therefore, a main object of the present invention is to provide a fan control device that improves the reliability of an information processing device and prevents failures and troubles.

[0005]

To achieve the above object, a fan control device according to the present invention comprises a power supply, a charging circuit for controlling charging using a supply voltage from the power supply, and a charging circuit via the charging circuit. An information processing apparatus, comprising: a battery capable of being used; a timer having a plurality of timer output signals; a transistor for turning on / off the voltage of the battery by the timer output; and a diode for switching between a voltage from a power supply and a supply voltage from the battery. A fan control device for controlling the fan, wherein a shutter or a cover for automatically closing a gap between the fans is provided to prevent invasion of dust and insects from the outside.

In addition, the fan is controlled by a backup by a timer.
It is preferable not to impair the cooling function inside the information processing device.

Further, it is preferable that the timer starts the internal counter when the power is turned off and outputs two signals having a time difference.

Further, the two signals are preferably an open / close signal for opening / closing a shutter or a cover and a drive signal for rotating / stopping a fan.

In addition, rotation / turn-on / off of the drive signal is performed by turning on / off the drive signal.
It is preferable to include a first motor that stops, and a second motor that rotates to one side when the drive signal is turned on and the open / close signal is turned off, and rotates to the other side when the drive signal is turned on and the open / close signal is turned on.

Further, there are provided first and second sensors which are turned on / off by opening / closing a shutter or a cover. The second motor rotates to one side, then stops when the first sensor is turned on, and rotates to the other side. After that, it is preferable to stop by the second sensor.

[0011]

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

FIG. 1 is a schematic diagram showing a configuration of an embodiment of a fan control device according to the present invention. The present invention relates to a fan control device in an information processing apparatus, wherein a rechargeable battery 4 and a timer 5 having a plurality of timer output signals are provided.
, A transistor 6, a diode 7, and a fan 8 having an automatic opening and closing shutter. As shown in FIG. 1, the fan control device according to the present invention includes a power supply 2, a charging circuit 3, a battery 4, a timer 5, a transistor 6, a diode 7, a fan 8,
In accordance with the present invention, the fan is provided with a shutter which can be automatically opened and closed. The fan 8 performs an operation of automatically opening and closing the shutter. Therefore, when the fan 8 is stopped, the gap between the fans 8 can be automatically closed, so that an intrusion of dust and insects from the outside can be prevented, and an effect of preventing a failure or trouble of the device can be obtained. In addition, since backup control by timer monitoring is implemented, even in the event of a power failure or unexpected power off, the cooling function inside the information processing device is not impaired,
It has the feature that it can also handle abnormalities.

[0013]

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, an embodiment of a fan control device according to the present invention will be described. In FIG. 1, a power supply 2, a charging circuit 3 for controlling charging of a battery 4 using a supply voltage by turning on the power supply 2, a rechargeable battery 4, and a disconnection of the power supply 2 are provided inside the information processing apparatus 1. , An internal counter is started, and a timer 6 for outputting two control signals having a time difference and a transistor 6 for turning on / off the voltage of the battery 4 under the control of the timer 5
And a diode 7 for switching between a voltage from the power supply 2 and a supply voltage of the battery 4 connected by turning on / off the transistor 6, and automatically opening / closing the shutter by a combination of the open / close signal 14 and the drive signal 15. And a fan 8 with a shutter.

FIG. 2 is a detailed view of the shutter-equipped fan 8 in the embodiment of the fan control device of the present invention. A motor 9 that rotates / stops when the drive signal 15 is turned on / off;
When the drive signal 15 is turned on and the open / close signal 14 is turned off, the sensor 1 rotates to the left, stops when the sensor 12 is turned on, and turns on when the drive signal 15 and the open / close signal 14 are turned on.
3, a motor 11 which stops when turned off, a shutter 11 which opens and closes in conjunction with the rotation direction of the motor 10, and a shutter 1
And sensors 12 and 13 which are turned on / off by opening and closing the sensor 1. The fan 8 provided according to the present invention can automatically open and close a shutter built in the fan 8. The charging circuit 3 shown in FIG. 1 is well known to those skilled in the art and is not directly related to the present invention, so that the detailed configuration is omitted.

Next, the operation of the embodiment of the present invention will be described with reference to FIGS. The portion of the fan with shutter 8 will be described with reference to FIG. In FIG. 1, when the power supply 2 of the information processing apparatus 1 is turned on, the charging circuit 3 monitors the voltage level of the battery 4 and starts charging according to the voltage level. At the same time, the timer 5 is reset to turn off the open / close signal 14 and turn on the drive signal 15 output from the diode 7. Fan with shutter 8
Turns the motor 9 under the conditions of the open / close signal 14 off and the drive signal 15 on. At the same time, the motor 10 is rotated to the left, and the rotation is continued until the sensor 12 is turned on. The sensor 12 is turned on upon detecting that the shutter 11 is completely opened. When the power supply 2 is turned off, the diode 7 switches the supply voltage from the power supply 2 to the voltage from the battery 4 supplied via the diode 6 and keeps the drive signal 15 on. Therefore, the shutter-equipped fan 8 can be continuously driven without stopping. At the same time, the reset of the timer 5 is released, the counter inside the timer 5 starts, and after a certain period of time, the open / close signal 14 is turned on. The shutter-equipped fan 8 rotates the motor 10 clockwise under the conditions of the open / close signal 14 and the drive signal 15 on, and continues to rotate until the sensor 13 is turned off. The sensor 13 turns off upon detecting that the shutter 11 is completely closed. Thereafter, the timer 5 turns off the transistor 6. Diode 7
Then, the drive signal 14 is turned off by cutting off the supply voltage from the battery 4 by turning off the transistor 6. When the drive signal 14 is turned off, the shutter-equipped fan 8 stops driving the motor 9.

Next, another embodiment of the present invention will be described.

FIG. 3 is a schematic diagram showing the configuration of another embodiment of the present invention. As another embodiment of the present invention, the basic configuration is the same as that of the above embodiment, but the fan device is further devised. FIG. 3 shows the configuration diagram. In the figure, a fan 16 with a carver is connected to power terminals 26 and 2.
7 and the gear 1 that operates in conjunction with the rotation of the motor 17.
8, 19, 20, 21, 22 and gears 18, 19, 2
The cover 23, 24, which is opened and closed in conjunction with the rotation of 0, 21.22, and the external input signal,
It has a drive signal 25 for stopping and power supply signals 26 and 27 for controlling the rotation direction of the motor 17.

Next, a detailed operation of another embodiment of the present invention will be described. When the drive signal 25 is turned on, the fan starts rotating. Further, the independent motor 17 is driven by the combination of the power signals 26 and 27. At this time, the gears 18, 19, 20, 21, 22 are connected to the motor 1
7, since it operates in conjunction with the rotation of the gear 7,
Covers 23, 2 in conjunction with rotation of 9, 20, 21.22
4 opens and closes. To open the covers 23 and 24, the motor 17 rotates to the left under the condition that the power terminal 26 is on and the power terminal 27 is off. When the motor 17 rotates to the left,
The gears 18, 19, 20, 21, 22 open the covers 23, 24 in conjunction therewith to enable the ventilation of the fan. Thereafter, the power supply terminal 26 is turned off and the motor 17 is stopped. To close the covers 23 and 24, the power terminal 26
Is off and the power supply terminal 27 is on, the motor 17 rotates to the right. When the motor 17 rotates to the right, the gear 1
8, 19, 20, 21, and 22 cooperate with each other to close the covers 23 and 24, thereby invalidating the air flow from the fan. Thereafter, the power supply terminal 27 is turned off and the motor 17 is stopped.
Therefore, by closing the covers 23 and 24, the gap between the fans can be closed, and the intrusion of dust and insects from the outside can be prevented.

[0020]

As described above, according to the present invention, the shutter incorporated in the fan can be automatically opened and closed, so that the gap between the fans is closed when the fan is stopped, thereby preventing dust and insects from entering from outside. It has the effect of being able to do so.

[0021] This also has the effect of preventing failures and troubles of the apparatus caused by invasion of dust and insects.

Furthermore, since the backup control by the built-in battery is incorporated even at the time of power failure or unexpected power-off, there is an effect that the shutter built in the fan can be closed in the same manner as in the normal processing.

Further, since the power supply is backed up and the fan function can be controlled for a certain period of time by the timer function, the increased temperature inside the information processing apparatus can be continuously cooled even when the power supply is cut off. Also, there is an effect of taking measures against device failure and improving the life of electronic components.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a configuration of an embodiment of the present invention.

FIG. 3 is a schematic diagram showing a configuration of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Information processing apparatus 2 Power supply 3 Charging circuit 4 Battery 5 Timer 6 Transistor 7 Diode 8 Fan with shutter 9 First motor 10 Second motor 11 Shutter 12 First sensor 13 Second sensor 14 Opening / closing signal 15 Drive signal 16 Fan with cover 17 Motor 18, 19, 20, 21, 22 Gear 23, 24 Cover 25 Drive signal 26, 27 Power supply terminal

Claims (6)

[Claims] 1. A power supply, a charging circuit for controlling charging using a supply voltage from the power supply, a battery chargeable via the charging circuit, a timer having a plurality of timer output signals, A fan control device for controlling a fan of an information processing apparatus, comprising: a transistor for turning on / off a voltage by the timer output; and a diode for switching between a voltage from the power supply and a supply voltage from the battery. A fan or a cover provided with a shutter or a cover for automatically closing the door and preventing invasion of dust and insects from the outside. 2. The fan according to claim 1, wherein the fan is controlled by the timer to be backed up, and does not impair the cooling function inside the information processing apparatus even in the event of a power failure or unexpected power off. Fan control device. 3. The fan control device according to claim 2, wherein the timer starts an internal counter when the power is turned off, and outputs two signals having a time difference. 4. The fan control device according to claim 3, wherein the two signals are an open / close signal for opening / closing the shutter or the cover and a drive signal for rotating / stopping the fan. 5. A first motor which rotates / stops when the drive signal is turned on / off, and a first motor which turns on / off when the drive signal is turned on and the open / close signal is turned off, and turns on / off the drive signal and the open / close signal. The fan control device according to claim 4, further comprising a second motor that rotates on the other side when the switch is turned on. 6. A motor according to claim 1, further comprising first and second sensors which are turned on / off by opening and closing said shutter or said cover, wherein said second motor is rotated to said one side and then stopped by turning on said first sensor. The fan control device according to claim 5, wherein the second sensor is stopped by the second sensor after rotating to the other side.