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Electronic device and program storage medium

a technology of electronic devices and program storage media, applied in the direction of pump control, non-positive displacement fluid engines, instruments, etc., can solve the problems of inability to generate necessary air flow, unstable operation of electronic devices, and inability to generate sufficient air flow

Inactive Publication Date: 2007-09-20
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015]The present invention has been made in view of the above circumstances and provides an electronic device which can correctly and reliably notify a user of time for cleaning of a fan itself arranged on the electronic device or time for cleaning of a filter arranged in an exhaust port or an intake port of the electronic device and a program storage medium in which a program which gives the function to the electronic device is stored.
[0021]The electronic device according to the present invention determines whether the calculated accumulated rotation number of the fan exceeds the predetermined threshold value and gives a warning in response to the determination result that the accumulated rotation number exceeds the threshold value. Therefore, according to the electronic device of the present invention, since the warning is given on the basis of the accumulated rotation number being in proportion to the cumulative amount of foreign matter collected on the fan itself or the filter, time for cleaning of the fan itself or the filter can be correctly and reliably notified.
[0036]According to the present invention, there is provided an electronic device which correctly and reliably notifies a user of time for cleaning of a fan itself arranged on the electronic device and time for cleaning of a filter arranged on an exhaust port or an intake port of the electronic device and a storage medium in which a program which gives the function to the electronic device is stored.

Problems solved by technology

The upper-limit temperature of operation guarantee is not too high, for example, about 95° C. When the LSI strongly generates heat, the operation of the LSI becomes unstable, or the LSI may be damaged by heat to make the electronic device nonusable.
However, even though such a filter is arranged on the exhaust port or the intake port, if foreign matter is collected on the filter to clog the filter, it is difficult to generate necessary, sufficient air flow in air-cooling by the fan.
For this reason, a heat-radiating part is damaged by heat, or the heat-radiating part excessively generates heat, so that the heat-radiating part may take fire.
However, when the technique is applied to an electronic device in which a fan which repeats rotation and stop depending on a temperature of a heat-generating part and the rotating speed of which changes as needed in rotation is arranged, correct time for cleaning of the filter cannot be determined, disadvantageously.
However, in the technique proposed in Japanese Patent Application Laid-open No. 2-64329, since determination whether the filter must be cleaned is executed depending on an operation of designating detection of filter clogging, when a state in which the operation is not executed continues for a long period of time, foreign matter is collected on the filter without notifying a user of the necessity of the filter cleaning, and the filter may be clogged.
As a result, it is difficult to generate an air flow necessary and sufficient for air-cooling by a fan.
A heat-generating part may be damaged by heat, or the heat-generating part may excessively generate heat to take fire.
In such a determination result using the change rate, the necessity of filter cleaning may not be correctly determined.

Method used

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  • Electronic device and program storage medium
  • Electronic device and program storage medium
  • Electronic device and program storage medium

Examples

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first embodiment

[0049]FIG. 1 is an external perspective view showing a notebook personal computer (to be referred to as a “notebook PC” hereinafter) 10 to which an embodiment of the present invention is applied.

[0050]The notebook PC 10 shown in FIG. 1 includes a main-body unit 20 and a display section 30. The main-body unit 20 and the display section 30 are connected by a connecting section 40 such that the display section 30 is openable / closable with respect to the main-body unit 20 in a direction of an arrow A-A. In FIG. 1 shows a notebook PC in a state in which the display section 30 is opened with respect to the main-body unit 20.

[0051]In the main-body unit 20, on the upper surface, a keyboard 21, a track pad 22, a left-click button 23, a right-click button 24, and an engagement section 25 which engages the display section 30 when the display section 30 is closed are arranged. On side surfaces of the main-body unit 20, a side surface 26 of an optical disk drive on which an optical disk such as ...

second embodiment

[0101]the present invention will be described below.

[0102]Since the second embodiment (will be described below) almost has the same configuration as that of the first embodiment. For this reason, attention is paid to different points between the second embodiment and the first embodiment. The same reference numerals as in the first embodiment denote the same parts in the second embodiment, and a description thereof is omitted.

[0103]FIG. 8 is a hardware block diagram of the second embodiment of the notebook PC 10 the appearance of which is shown in FIG. 1.

[0104]In the hardware block diagram shown in FIG. 8, a hard disk controller 111, an MO drive 112, an optical disk drive 113, a track pad controller 114, a keyboard controller 115, a display controller 116, a fan control section 117, an accumulated rotation number calculating section 218, a CPU 119, a main memory 120, and a power source management section 122. These components are connected to each other by a bus 110.

[0105]The accumu...

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PUM

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Abstract

A rotation number calculating section calculates rotation numbers per unit time on the basis of pulse signals, a CPU calculates an accumulated rotation number on the basis of a sum of products of the rotation numbers read at a predetermined time interval and the predetermined time, determines whether the accumulated rotation number exceeds a predetermined threshold value, and gives a warning aiming at urging a user to clean a fan in response to a determination result that the accumulated rotation number exceeds the threshold value.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a an electronic device which is cooled by an air flow generated by rotation of a built-in fan and a program storage medium in which a program executed by the electronic device is stored.[0003]2. Background Art[0004]In a conventional art, when a heat-generating part which generates heat with operation must be mounted in an electronic device, position arrangement of the heat-generating part in the electronic device is schemed, or, if the cooling is not satisfied by scheming the position arrangement, the heat-generating part is cooled by an air flow generated around the heat-generating part.[0005]For example, in an electronic device such as a server or a personal computer, heat generation from an LSI (Large Scale Integration: large-scale integrated circuit) constituting the circuit of a CPU is high. The upper-limit temperature of operation guarantee is not too high, for example, about 95° C...

Claims

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Application Information

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IPC IPC(8): F04B49/00
CPCG06F1/20F04D27/001
Inventor AOYAMA, YUJI
Owner FUJITSU LTD