JP7565860B2 - Fan covers and electrical equipment - Google Patents

Description

This disclosure relates to a fan cover and an electrical device.

For example, JP 2013-222882 A (Patent Document 1) describes a louver board. The louver board described in Patent Document 1 has a plate wall and a louver wall. The plate wall has an opening that penetrates the plate wall in the thickness direction. The louver wall extends forward from the upper edge of the opening, and then extends downward to cover the opening.

JP 2013-222882 A

In the louver board described in Patent Document 1, water droplets (raindrops, etc.) adhering to the louver wall can fall from any position on the lower end of the louver wall. Therefore, in the louver board described in Patent Document 1, it is not possible to control the discharge position of water droplets adhering to the louver wall.

This disclosure has been made in consideration of the problems with the conventional technology described above. More specifically, this disclosure provides a fan cover that is capable of discharging water droplets adhering to the louvers to the outside of the fan cover.

The fan cover of the present disclosure includes a frame body and a plurality of first louvers. The frame body has a first surface facing the front side of the fan cover and a second surface that is the opposite surface of the first surface and faces the back side of the fan cover. The normal lines of the first surface and the second surface are along a first direction, which is the thickness direction of the fan cover. The frame body has an opening penetrating the frame body along the first direction. The plurality of first louvers are connected to the frame body in a line along a second direction perpendicular to the first direction so as to close the opening. Each of the plurality of first louvers is inclined so as to move from the front side of the fan cover to the back side of the fan cover as it moves from one side in the second direction to the other side in the second direction, and is inclined so as to move from the front side of the fan cover to the back side of the fan cover as it moves from one side in a third direction perpendicular to the first direction and the second direction to the other side in the third direction. Each of the multiple first louvers has a first main body and a first tip connected to one end of the first main body in the second direction. The first tip includes a first end and a second end that is the end opposite the first end in the third direction. The second end is on one side of the first end in the second direction and on the other side of the first end in the third direction. The first tip extends so that the second end reaches the first surface. The inclination angle of the first tip with respect to the second direction is greater than the inclination angle of the first main body with respect to the second direction.

The fan cover disclosed herein makes it possible for water droplets adhering to the louvers to be discharged to the outside of the fan cover.

FIG. 2 is a front view of the fan cover 100. 2 is a cross-sectional view taken along line II-II in FIG. 2 is a cross-sectional view taken along line III-III in FIG. FIG. 2 is a front perspective view of the fan cover 100. FIG. 2 is a rear perspective view of the fan cover 100. 2 is an enlarged view of the fan cover 100 in the vicinity of the second end 32b. FIG. 5A to 5C are schematic diagrams for explaining the effect of the fan cover 100. FIG. 2 is a plan view of the fan cover 100A. FIG. 2 is a plan view of the fan cover 100B. FIG. 2 is a plan view of the fan cover 100C. FIG. 2 is a side view of the electrical device 200.

Details of the embodiments of the present disclosure will be described with reference to the drawings. In the following drawings, the same or corresponding parts will be given the same reference symbols, and redundant explanations will not be repeated.

Embodiment 1.
A fan cover according to a first embodiment (referred to as "fan cover 100") will be described.

(Configuration of fan cover 100)
The configuration of the fan cover 100 will be described below.

Figure 1 is a front view of the fan cover 100. Figure 2 is a cross-sectional view taken along line II-II in Figure 1. Figure 3 is a cross-sectional view taken along line III-III in Figure 1. Figure 4 is a front oblique view of the fan cover 100. Figure 5 is a rear oblique view of the fan cover 100. As shown in Figures 1 to 5, the fan cover 100 has a frame body 10, a support 20, a plurality of louvers 30, and a plurality of louvers 40. The fan cover 100 is formed, for example, by resin molding.

The frame body 10 is plate-shaped and has a first surface 10a and a second surface 10b. The normals of the first surface 10a and the second surface 10b are along the first direction DR1. The second surface 10b is the opposite surface to the first surface 10a. The first surface 10a faces the front side of the fan cover 100, and the second surface 10b faces the rear side of the fan cover 100. The outer shape of the frame body 10 is rectangular in a plan view. However, this rectangle may have rounded corners.

An opening 11 is formed in the frame body 10. The opening 11 penetrates the frame body 10 along the first direction DR1. In a plan view, the opening 11 has, for example, an octagonal shape. However, the planar shape of the opening 11 is not limited to this. In a plan view, the opening 11 may have, for example, a polygonal shape or a circular shape.

A plurality of through holes 12 are formed in the frame body 10. The through holes 12 penetrate the frame body 10 along the first direction DR1. In a plan view, the through holes 12 are, for example, circular in a plan view. In a plan view, the through holes 12 are formed in the corners of the frame body 10. More specifically, four through holes 12 are formed in each of the four corners of the frame body 10 in a plan view.

A groove 13 is formed on the second surface 10b. The groove 13 is formed to surround the opening 11 in a plan view. A waterproof gasket is inserted into the groove 13. The position in the first direction DR1 of the portion 10ba of the second surface 10b that is connected to the outer periphery of the groove 13 coincides with the position in the first direction DR1 of the portion of the second surface 10b that is around the through hole 12. From another perspective, the portion 10ba of the second surface 10b that is connected to the outer periphery of the groove 13 and the portion of the second surface 10b that is around the through hole 12 are flush with each other.

A rib 14 is formed on the second surface 10b. In a plan view, the rib 14 surrounds the opening 11. The rib 14 forms the inner periphery of the groove 13. The position of the tip surface of the rib 14 in the first direction DR1 is located at a position that protrudes in the first direction DR1 from the portion of the second surface 10b surrounding the through hole 12.

The pillars 20 extend in the second direction DR2 so as to cross the opening 11. The second direction DR2 is perpendicular to the first direction DR1. The second direction DR2 corresponds to the vertical direction when the fan cover 100 is attached to the electrical equipment. The end faces of the pillars 20 on the front side of the fan cover 100 are located in a position protruding beyond the first surface 10a in the first direction DR1. Both ends of the pillars 20 in the second direction DR2 are on the first surface 10a.

The support 20 has a side wall 21 and a side wall 22. The side wall 21 and the side wall 22 extend along the second direction DR2 in a plan view, and face each other with a gap in between in the third direction DR3. The third direction DR3 is a direction perpendicular to the first direction DR1 and the second direction DR2. The support 20 further has a rib 23. The rib 23 extends along the second direction DR2, and has the side wall 21 and the side wall 22. However, the support 20 may be formed solid.

The multiple louvers 30 are connected to the frame body 10 in a line along the second direction DR2 so as to close the opening 11. The distance between two adjacent louvers 30 is, for example, constant. The distance between two adjacent louvers 30 may vary along the second direction DR2. For example, the distance between two adjacent louvers 30 may be narrower on one side in the second direction DR2 (corresponding to the lower side in FIG. 1) and wider on the other side in the second direction DR2 (corresponding to the upper side in FIG. 1).

The louvers 30 are inclined from the front side of the fan cover 100 toward the rear side of the fan cover 100 as they move from one side in the second direction DR2 to the other side in the second direction DR2. Also, the louvers 30 are inclined from the front side of the fan cover 100 toward the rear side of the fan cover 100 as they move from one side in the third direction DR3 (corresponding to the left side in FIG. 1) to the other side in the third direction DR3 (corresponding to the right side in FIG. 1).

The louver 30 has a main body 31 and a tip 32. The tip 32 is connected to one end of the main body 31 in the second direction DR2. The tip 32 has a first end 32a and a second end 32b. The second end 32b is the end opposite the first end 32a. The second end 32b is on one side of the first end 32a in the second direction DR2 and on the other side of the first end 32a in the third direction DR3. The tip 32 is connected to the support 20 at the first end 32a and extends so that the second end 32b is on the first surface 10a.

It is preferable that the tip 32 of at least one of the multiple louvers 30 extends so that the second end 32b reaches the outer peripheral edge of the first surface 10a. For example, when the through hole 12 is on the extension line of the tip 32, the tip 32 does not extend so that the second end 32b reaches the outer peripheral edge of the first surface 10a.

One of the two adjacent louvers 30 is referred to as louver 30a. The other of the two adjacent louvers 30 is referred to as louver 30b. The other end of the main body 31 of louver 30b in the second direction DR2 preferably coincides in position in the second direction DR2 with one end of the tip 32 of louver 30a in the second direction DR2. The other end of the main body 31 of louver 30b in the second direction DR2 may overlap with one end of the tip 32 of louver 30a in the second direction DR2 when viewed along the first direction DR1.

The inclination angle of the tip portion 32 with respect to the second direction DR2 is greater than the inclination angle of the main body portion 31 with respect to the second direction DR2 in a cross-sectional view perpendicular to the third direction DR3. From another perspective, the inclination of the tip portion 32 with respect to the second direction DR2 is gentler than the inclination of the main body portion 31 with respect to the second direction DR2.

The multiple louvers 40 are connected to the frame body 10 in a line along the second direction DR2 so as to close the opening 11. The distance between two adjacent louvers 40 is, for example, constant. The distance between two adjacent louvers 40 may vary along the second direction DR2. For example, the distance between two adjacent louvers 40 may be narrower on one side in the second direction DR2 and wider on the other side in the second direction DR2.

The louvers 40 are inclined from the front side of the fan cover 100 toward the rear side of the fan cover 100 as they move from one side in the second direction DR2 to the other side in the second direction DR2. Also, the louvers 40 are inclined from the front side of the fan cover 100 toward the rear side of the fan cover 100 as they move from the other side in the third direction DR3 to one side in the third direction DR3.

The louver 40 has a main body 41 and a tip 42. The tip 42 is connected to one end of the main body 41 in the second direction DR2. The tip 42 has a third end 42a and a fourth end 42b. The fourth end 42b is the end opposite the third end 42a. The fourth end 42b is on one side of the third end 42a in the second direction DR2 and on one side of the third end 42a in the third direction DR3. The tip 42 is connected to the support 20 at the third end 42a and extends so that the fourth end 42b is on the first surface 10a.

It is preferable that the tip 42 of at least one of the multiple louvers 40 extends so that the fourth end 42b reaches the outer peripheral edge of the first surface 10a. For example, when the through hole 12 is on the extension line of the tip 42, the tip 42 does not extend so that the fourth end 42b reaches the outer peripheral edge of the first surface 10a.

One of the two adjacent louvers 40 is referred to as louver 40a. The other of the two adjacent louvers 40 is referred to as louver 40b. The other end of the main body 41 of louver 40b in the second direction DR2 preferably coincides in position in the second direction DR2 with one end of the tip 42 of louver 40a in the second direction DR2. The other end of the main body 41 of louver 40b in the second direction DR2 may overlap with one end of the tip 42 of louver 40a in the second direction DR2 when viewed along the first direction DR1.

The inclination angle of the tip portion 42 with respect to the second direction DR2 is greater than the inclination angle of the main body portion 41 with respect to the second direction DR2 in a cross-sectional view perpendicular to the third direction DR3. From another perspective, the inclination of the tip portion 42 with respect to the second direction DR2 is gentler than the inclination of the main body portion 41 with respect to the second direction DR2.

The multiple louvers 30 and the multiple louvers 40 are, for example, symmetrical with respect to the support 20. However, the multiple louvers 30 and the multiple louvers 40 may be, for example, asymmetrical with respect to the support 20. FIG. 6 is an enlarged view of the fan cover 100 near the second end 32b. As shown in FIG. 6, the tip 32 may be chamfered at the second end 32b. Although not shown, the tip 42 may also be similarly chamfered at the fourth end 42b.

(Effects of the fan cover 100)
The effects of the fan cover 100 will be described below.

The louvers 30 are inclined from the front side of the fan cover 100 toward the rear side of the fan cover 100 as they move from one side in the second direction DR2 to the other side in the second direction DR2. Therefore, water droplets such as raindrops that adhere to the main body 31 move due to the action of gravity toward the tip 32 that is connected to the end of one side of the main body 31 in the second direction DR2.

The inclination of the tip 32 in the second direction DR2 is gentler than the inclination of the main body 31 in the second direction DR2. Therefore, water droplets that reach the tip 32 are less likely to fall from the tip 32.

In addition, because the louvers 30 are inclined from the front side of the fan cover 100 toward the rear side of the fan cover 100 as they move from one side in the third direction DR3 to the other side in the third direction DR3, water droplets that reach the tip 32 move toward the second end 32b due to the action of gravity. And, because the tip 32 extends so that the second end 32b reaches the first surface 10a, water droplets that reach the tip 32 fall from the outside of the fan cover 100. The same is true for water droplets that adhere to the main body 41.

When the tip 32 extends so that the second end 32b reaches the outer peripheral edge of the first surface 10a, and the fourth end 42b extends so that it reaches the outer peripheral edge of the first surface 10a, water droplets are more likely to fall from the outside of the fan cover 100.

The fan cover 100 is attached to the housing of the electrical device by inserting a screw into the through hole 12 and screwing the screw into a threaded hole provided in the housing of the electrical device. At this time, it is necessary to prevent the waterproof packing placed in the groove 13 from being excessively compressed. In the fan cover 100, the portion 10ba of the second surface 10b that is connected to the outer periphery of the groove 13 and the portion of the second surface 10b around the through hole 12 are flush with each other, so that the waterproof packing placed in the groove 13 is prevented from being excessively compressed.

When the support 20 has side walls 21 and 22, the effective thickness of the support 20 is reduced compared to when the support 20 is formed as a solid core. Therefore, in this case, the amount of shrinkage of the support 20 when the fan cover 100 is resin molded can be reduced. When the fan cover 100 has the support 20, resin can be supplied to other parts (for example, parts of the mold that mold the louvers 30 and 40) through the part of the mold that molds the support 20, thereby improving the efficiency of resin molding.

Figure 7 is a schematic diagram for explaining the effect of the fan cover 100. When the other end of the main body 31 of the louver 30b in the second direction DR2 coincides with the position of one end of the tip 32 of the louver 30a in the second direction DR2, and the other end of the main body 41 of the louver 40b in the second direction DR2 coincides with the position of one end of the tip 42 of the louver 40a in the second direction DR2, as shown in Figure 7, if the mold for resin molding the fan cover 100 is divided along the dotted line in Figure 6, a slide structure of the mold is not required. In this case, air can easily pass between the louvers 30a and 30b and between the louvers 40a and 40b, so that the heat dissipation from the fan cover 100 can be improved.

On the other hand, if the other end of the main body 31 of the louver 30b in the second direction DR2 overlaps with one end of the tip 32 of the louver 30a in the second direction DR2 when viewed along the first direction DR1, and the other end of the main body 41 of the louver 40b in the second direction DR2 overlaps with one end of the tip 42 of the louver 40a in the second direction DR2 when viewed along the first direction DR1, raindrops and the like are less likely to enter the housing of the electrical equipment to which the fan cover 100 is attached.

(Modification)
Although an example has been described above in which the fan cover 100 is attached to the housing of the electrical device by screws, the fan cover 100 may also be attached to the housing of the electrical device by using a fitting such as a snap fit.

Embodiment 2.
A fan cover according to the second embodiment (referred to as "fan cover 100A") will be described below. Differences from fan cover 100 will be mainly described here, and overlapping descriptions will not be repeated.

(Configuration of fan cover 100A)
The configuration of the fan cover 100A will be described below.

Figure 8 is a plan view of the fan cover 100A. As shown in Figure 8, the fan cover 100A has a frame body 10 and a plurality of louvers 30. In this respect, the configuration of the fan cover 100A is common to the configuration of the fan cover 100.

The fan cover 100A does not have a support 20 and a plurality of louvers 40. In the fan cover 100A, the tip 32 extends so that the first end 32a is on the first surface 10a. Preferably, in the fan cover 100A, the tip 32 of at least one of the plurality of louvers 30 extends so that the first end 32a reaches the outer peripheral edge of the first surface 10a. In these respects, the configuration of the fan cover 100A differs from the configuration of the fan cover 100.

(Effects of fan cover 100A)
The effects of the fan cover 100A will be described below.

The fan cover 100A has multiple louvers 30, just like the fan cover 100, so that raindrops and other water droplets adhering to the main body 31 flow toward the tip 32 and are discharged from the second end 32b to the outside of the fan cover 100A.

Embodiment 3.
A fan cover according to a third embodiment (referred to as "fan cover 100B") will be described. Here, differences from fan cover 100 will be mainly described, and overlapping descriptions will not be repeated.

(Configuration of fan cover 100B)
The configuration of the fan cover 100B will be described below.

Figure 9 is a plan view of fan cover 100B. As shown in Figure 9, fan cover 100B has a frame body 10, a support 20, a plurality of louvers 30, and a plurality of louvers 40. In this respect, the configuration of fan cover 100B is common to the configuration of fan cover 100.

In the fan cover 100B, a plurality of grooves 15 and grooves 16 are formed on the first surface 10a. The grooves 15 contact the tip portion 32 on the first surface 10a from the other side in the second direction DR2. It is preferable that the grooves 15 and the tip portion 32 extend to reach the outer peripheral edge of the first surface 10a. The grooves 16 contact the tip portion 42 on the first surface 10a from the other side in the second direction DR2. It is preferable that the grooves 16 and the tip portion 42 extend to reach the outer peripheral edge of the first surface 10a. In these respects, the configuration of the fan cover 100B differs from the configuration of the fan cover 100.

(Effects of fan cover 100B)
The effects of the fan cover 100B will be described below.

In the fan cover 100B, a groove 15 is formed in the tip 32 portion on the first surface 10a so as to contact the other side in the second direction DR2, and a groove 16 is formed in the tip 42 portion on the first surface 10a so as to contact the other side in the second direction DR2. Therefore, in the fan cover 100B, water droplets adhering to the louvers 30 tend to pass through the grooves 15 and fall from the outside of the fan cover 100B, and water droplets adhering to the louvers 40 tend to pass through the grooves 16 and fall from the outside of the fan cover 100B.

Embodiment 4.
A fan cover according to a fourth embodiment (referred to as "fan cover 100C") will be described. Here, differences from fan cover 100 will be mainly described, and overlapping descriptions will not be repeated.

(Configuration of fan cover 100C)
The configuration of the fan cover 100C will be described below.

Figure 10 is a plan view of fan cover 100C. As shown in Figure 10, fan cover 100C has a frame body 10, a support 20, a plurality of louvers 30, and a plurality of louvers 40. In this respect, the configuration of fan cover 100C is common to the configuration of fan cover 100.

In the fan cover 100B, a rib 17 is formed on the first surface 10a. The rib 17 rises from the first surface 10a along the first direction DR1. In a plan view, the rib 17 surrounds the opening 11. A plurality of notches 17a and a plurality of notches 17b are formed in the rib 17. The notches 17a and the notches 17b penetrate the rib 17 in a direction from the inner periphery of the rib 17 toward the outer periphery of the rib 17.

The tip 32 and the tip 42 pass through the notch 17a and the notch 17b, respectively. The rib 17 is not connected to the tip 32 from the other side in the second direction DR2, but may be connected to the tip 32 from one side in the second direction DR2. The rib 17 is not connected to the tip 42 from the other side in the second direction DR2, but may be connected to the tip 42 from one side in the second direction DR2. The support 20 may be connected to the rib 17 at both ends in the second direction DR2. In these respects, the configuration of the fan cover 100C differs from the configuration of the fan cover 100.

(Effects of fan cover 100C)
The effects of the fan cover 100C will be described below.

In the fan cover 100C, the ribs 17 are formed on the first surface 10a, which increases the rigidity of the fan cover 100C. In addition, in the fan cover 100C, the tip 32 and the tip 42 pass through the notches 17a and 17b, respectively, so the ribs 17 do not prevent water droplets from moving over the tip 32 and the tip 42 and being discharged from the outside of the fan cover 100C. In this way, the fan cover 100C allows water droplets to fall from the outside of the fan cover 100C while improving the rigidity.

Embodiment 5.
An electric device according to a fifth embodiment (hereinafter referred to as "electric device 200") will be described.

(Configuration of Electrical Device 200)
The configuration of the electrical device 200 will be described below.

Figure 11 is a side view of electrical device 200. As shown in Figure 11, electrical device 200 has a housing 210. Although not shown, a servo amplifier, an inverter, etc. are arranged inside housing 210. However, the devices arranged inside housing 210 are not limited to these.

A number of fan covers 100 are attached to the side wall of the housing 210. Note that in the electrical device 200, fan cover 100A, fan cover 100B, or fan cover 100C may be used instead of fan cover 100. The fan cover 100 is attached to the side wall of the housing 210 so that one side in the second direction DR2 coincides vertically downward and the other side in the second direction DR2 coincides vertically upward. The multiple fan covers 100 are lined up in the vertical direction.

(Effects of Electrical Device 200)
The effects of the electrical device 200 will be described below.

One of the fan covers 100 is designated as fan cover 100a, and the other of the fan covers 100 vertically below fan cover 100a is designated as fan cover 100b. Water droplets adhering to the multiple louvers 30 and multiple louvers 40 of fan cover 100a fall to the outside of fan cover 100b. Therefore, water droplets adhering to the multiple louvers 30 and multiple louvers 40 of fan cover 100a are unlikely to adhere to fan cover 100b.

The embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The basic scope of the present disclosure is indicated by the claims rather than the above embodiments, and it is intended to include all modifications within the meaning and scope of the claims.

10 frame, 10a first surface, 10b second surface, 11 opening, 12 through hole, 13 groove, 14 rib, 15, 16 groove, 17 rib, 17a, 17b notch, 20 support, 21, 22 side wall, 23 rib, 30, 30a, 30b louver, 31 main body, 32 tip, 32a first end, 32b second end, 40, 40a, 40b louver, 41 main body, 42 tip, 42a third end, 42b fourth end, 100, 100A, 100B, 100C, 100a, 100b fan cover, 200 electrical equipment, 210 housing, DR1 first direction, DR2 second direction, DR3 third direction.

Claims (9)

A fan cover,
A frame body,
a plurality of first louvers;
The frame has a first surface facing a front side of the fan cover and a second surface opposite to the first surface and facing a rear side of the fan cover,
A normal line of the first surface and the second surface is along a first direction which is a thickness direction of the fan cover,
The frame has an opening formed therein, the opening penetrating the frame along the first direction,
The first louvers are connected to the frame body and arranged in a second direction perpendicular to the first direction so as to close the opening,
each of the plurality of first louvers is inclined from the front side of the fan cover to the rear side of the fan cover as it moves from one side in the second direction to the other side in the second direction, and is inclined from the front side of the fan cover to the rear side of the fan cover as it moves from one side in a third direction perpendicular to the first direction and the second direction to the other side in the third direction,
Each of the plurality of first louvers has a first main body portion and a first tip portion connected to one end of the first main body portion in the second direction,
The first tip portion includes a first end and a second end that is an end opposite to the first end in the third direction,
the second end is on one side of the first end in the second direction and on the other side of the first end in the third direction,
the first tip portion extends such that the second end reaches the first surface,
A fan cover, wherein an inclination angle of the first tip portion with respect to the second direction is greater than an inclination angle of the first main body portion with respect to the second direction. The fan cover according to claim 1, wherein the first tip portion extends so that the first end reaches onto the first surface. The pillars and
Further comprising a plurality of second louvers;
The support extends in the second direction across the opening,
The plurality of second louvers are connected to the frame body and arranged along a second direction perpendicular to the first direction so as to close the opening,
each of the plurality of second louvers is inclined from the front side of the fan cover to the rear side of the fan cover as it moves from one side in the second direction to the other side in the second direction, and is inclined from the front side of the fan cover to the rear side of the fan cover as it moves from the other side in the third direction to the one side in the third direction;
Each of the plurality of second louvers has a second main body portion and a second tip portion connected to one end of the second main body portion in the second direction,
The second tip portion includes a third end and a fourth end that is an end opposite to the third end in the third direction,
the fourth end is located on one side of the third end in the second direction and is also located on one side of the third end in the third direction;
the second tip portion extends such that the fourth end reaches onto the first surface,
an inclination angle of the second tip portion with respect to the second direction is larger than an inclination angle of the second main body portion with respect to the second direction;
the first tip is connected to the post at the first end;
The fan cover of claim 1 , wherein the second tip is connected to the support post at the third end. an end on one side in the second direction of the first tip portion of one of two adjacent first louvers among the plurality of first louvers coincides with an end on the other side in the second direction of the first main body portion of the other of two adjacent first louvers among the plurality of first louvers,
A fan cover as described in claim 3, wherein an end on one side in the second direction of the second tip portion of one of two adjacent ones of the plurality of second louvers is in the same position in the second direction as an end on the other side in the second direction of the second main body portion of the other of two adjacent ones of the plurality of second louvers. The fan cover according to any one of claims 1 to 4, wherein the first tip of at least one of the plurality of first louvers extends such that the second end reaches the outer peripheral edge of the first surface. A first groove is formed in the first surface,
A fan cover as described in any one of claims 1 to 5, wherein the first groove contacts a portion of the first tip portion of one of the plurality of first louvers that is located on the first surface from the other side in the second direction. a rib is formed on the first surface, the rib rising from the first surface along the first direction and surrounding the opening,
The rib has a notch formed therein, the notch penetrating the rib along a direction from an inner periphery side of the rib toward an outer periphery side of the rib,
A fan cover as described in any one of claims 1 to 6, wherein a portion of the first tip of one of the plurality of first louvers that is located on the first surface passes through the notch. a through hole penetrating the frame body along the first direction is formed at a corner of the frame body,
A second groove surrounding the opening is formed in the second surface,
A fan cover as described in any one of claims 1 to 7, wherein the position in the first direction of the portion of the second surface that is connected to the outer periphery of the second groove coincides with the position in the first direction of the portion of the second surface that is around the through hole. An electrical device comprising:
A housing and
A plurality of fan covers,
Each of the plurality of fan covers is the fan cover according to any one of claims 1 to 8,
The electrical device, wherein the plurality of fan covers are attached to the housing and aligned along a vertical direction.

Images