JPH0824224B2 - Exhaust device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a heat exhaust device provided in a device having a heat generating portion.

(B) Conventional Technology As a prior art prior to the present invention, a device including an electronic component or the like partially having a heat generating portion covered with an outer shell, for example, a computer main body including a CRT in a computer,
There is one that has a structure in which RT and various electronic components such as CPU are covered with an outer shell and integrated, and in order to discharge heat from the CRT, CPU, etc. to the outside, there is a vent hole in the outer shell and this vent hole. A heat exhausting device consisting of a pair of exhaust fans is provided for internal cooling. Further, as an improved version of the above-mentioned conventional technology, there is Japanese Patent Laid-Open No. 63-298424 (G06F 1/00), in which an exhaust heat fan is provided in an exhaust heat unit provided outside a device having a heat generating unit. The inside of the device is divided into a negative pressure part and a positive pressure part so that the heat exhausting means arranged opposite to each other and the heat generating part are covered and connected to the heat exhausting part so that the heat generating part side has a negative pressure. A dividing means for forming an air flow passage, a temperature detecting means in the device in the flow path of the internal air and in the vicinity of the heat exhausting portion, and a temperature detected by the temperature detecting means and a set temperature. There is shown an exhaust heat device including an exhaust heat fan control means for changing the number of rotations of the exhaust heat fan stepwise according to a comparison value.

(C) Problems to be Solved by the Invention Since the equipment of the above-mentioned prior art is used as office equipment, only the conditions of use in an office or an environment close to it are taken into consideration, and the environment is relatively covered with dust in a factory or the like. If used below, a large amount of dust will enter through the suction and discharge holes,
There is a problem in that the electronic components mounted on the board are adversely affected by the ignition and the like.

In view of the above-mentioned problems of the prior art, the present invention provides a heat exhaust device aiming to prevent dust from entering the equipment.

(D) Means for Solving the Problems The present invention is, as a means for achieving the above object, an apparatus having a heat generating portion and a blower for cooling the heat generating portion, which is formed in the box body. And a suction hole and a discharge hole, a filter provided in the suction hole, and an opening / closing member provided in the discharging hole. The opening / closing member is made of a thin resin sheet having elasticity, and the wind pressure when the blower is operated. Thus, there is provided a heat exhausting device having a laterally long tongue piece which is opened and closed when stopped.

(E) Action According to the present invention, when used in a factory with a lot of dust, the air sucked by the blower from the suction hole contains a large amount of dust, and this is filtered by the filter provided in the suction hole. The dust-removed air cools the heat-generating part, and the tongue opens from the inside to the outside due to wind pressure, and is discharged from the discharge hole.
Further, when the operation is stopped, the tongue returns to its original position and is closed, so that dust does not enter through the discharge hole.

(F) Example Hereinafter, an example of the present invention will be described with reference to the drawings.

(1) shown in FIGS. 4 to 6 is an information device such as a computer, which has a window (3) on the side surface and a suction hole (4) on the rear surface.
A box (2) having a cathode ray tube (5) and an exothermic part (6) such as an electronic component are provided in the box (2), and the exothermic fin (7) is provided in the exothermic part (6). Also, a blower (8) for cooling the cathode ray tube (5) and the heat generating part (6).
Is provided in the box (2) and faces the suction hole (4). The wind from the blower (8) is discharged from the window (3) after cooling the cathode ray tube (5) and the heat generating part (6).

Next, as the structure of the main part of the present invention, as shown in FIGS. 4 and 5, a filter (9) for preventing intrusion of dust is provided on the support member (10) in the suction hole (4). . The support member (10) provided with the filter (9) is sucked into the blower (8) by being inserted into the box (2) through the opening (14) formed in the upper surface of the box (2). It is arranged between the holes (4). The filter (9) is a breathable one made by foaming an ester resin and has elasticity.

Further, (11) shown in FIGS. 1 to 3 is an opening / closing member made of a thin resin sheet such as polyester, and the opening / closing member (11) is attached to the blowout grill (12) with an adhesive or the like. The blowout grill (12) is formed in a box shape with one surface open, and is attached to the inner wall of the box (2) so as to cover the window (3) from the inside. In addition, blowing grill (1
On the surface facing the window (3) of 2), a horizontally long discharge hole (13)
Are formed in plural. The resin sheet used as the opening / closing member (11) has flexibility and elasticity, for example, a thickness of 0.1 mm.
By making U-shaped cuts (16) in a plurality of portions, a plurality of laterally long tongue pieces (15) corresponding to the respective discharge holes (13) are formed. This tongue (15)
When the blower (8) is operating, it is opened to the outside by the wind pressure and the exhaust hole (1
3) is opened, and when the blower (8) is stopped, it becomes vertical due to its own weight and closes the discharge hole (13).

Next, the operation will be described. The air sucked from the suction hole (4) by the blower (8) is filtered by the filter (9) and the heat generating portion (6) such as an electronic component in the box body (2). Exchange heat. At this time, the tongue piece (15) of the opening / closing member (11) pivots upward by wind pressure to open the discharge hole (13), and the air that has exchanged heat with the heat generating portion (6) is as shown by the arrow in FIG. It passes through the discharge hole (13) and is discharged to the outside through the window (3). Further, when the blower (8) is stopped, the tongue piece (15) of the opening / closing member (11) closes the discharge hole (13) as shown in FIG.
Dust is prevented from entering the box body (2) through the discharge hole (13).

As described above, the filter (9) is provided in the suction hole (4).
This prevents dust contained in the outside air from entering and keeps a clean cooling air at all times, and because the inside of the box (2) is maintained at a positive pressure, the air after cooling is discharged from the exhaust hole (13). By discharging, dust can be prevented from entering through the discharge hole (13). When the blower (8) is stopped, the exhaust hole (1
The tongue piece (15) of the opening / closing member (11) provided in (3) closes due to its elasticity, and dust can be prevented from entering through the discharge hole (13).

(G) Effect of the Invention As described above, according to the present invention, when the blower is in operation, the filter prevents the dust contained in the outside air from entering, and when the blower is stopped, the tongue piece automatically returns to close the discharge hole. Prevents dust from entering. Therefore, clean cooling air can always be obtained even when used in a bad environment such as in a factory, and dust does not enter the equipment even when the equipment is stopped. Can be avoided. Further, since the opening / closing member is made of a thin resin sheet, the cost is low, and since the laterally long tongue piece is formed, the tongue piece is unlikely to be twisted or bent, and its elasticity makes it possible to close the discharge hole. Is good.

[Brief description of drawings]

Each of the drawings shows an embodiment of the heat exhaust device of the present invention, FIG. 1 is a perspective view of a main part of the heat exhaust device, FIG. 2 is a longitudinal sectional view of the heat exhaust device provided in the information equipment, and FIG. Is a vertical cross-sectional view of the heat exhaust device in operation, FIG. 4 is a cross-sectional view taken along the line AA of FIG. 6, FIG. 5 is an external perspective view of the information device when the filter is removed, and FIG. 6 is a rear view of the information device. is there. (1) …… Information equipment, (2) …… Box, (4) …… Suction hole, (6) …… Heating part, (8) …… Blower, (9) ……
Filter, (11) …… Opening / closing member, (13) …… Discharge hole,
(15) …… Tongue.

Claims (1)

[Claims] 1. A device in which a heat generating part and a blower for cooling the heat generating part are provided in a box, a suction hole and a discharge hole formed in the box, a filter provided in the suction hole, and The opening and closing member provided in the discharge hole, the opening and closing member is made of a thin resin sheet having elasticity,
A heat exhaust device that forms a long tongue in the lateral direction that opens when the blower is activated and closes when stopped by the wind pressure.