WO2016039066A1

WO2016039066A1 - Electric device with waterproof cover and waterproof cover

Info

Publication number: WO2016039066A1
Application number: PCT/JP2015/072878
Authority: WO
Inventors: 正一郎宮澤
Original assignee: 日本電業工作株式会社
Priority date: 2014-09-12
Filing date: 2015-08-12
Publication date: 2016-03-17
Also published as: JP5934763B2; JP2016059021A

Abstract

An electric device or the like equipped with a waterproof cover which without using sealing material or packing is able to prevent the occurrence of adverse effects to the functions of the electric device caused by intrusion of water. A planar antenna (10) as an example of this electric device is provided with: an antenna body (100) comprising antenna elements (120) and a reflector (110) on which the antenna elements (120) are mounted; an antenna cover (200) for covering the antenna elements (120); and holes (203a, 203b) for draining intruding water. The antenna cover (200) includes partition walls (204a, 204c) that are disposed above and below the antenna elements (120) and partition walls (204b, 204d) that are disposed on the right and left sides. The partition walls (204a, 204b, 204c, 204d) extend from the antenna cover (200) so as to come into contact with the reflector (110). Partition walls (204a, 204c) face the space between partition walls (204b, 204d), and the length of partition walls (204a, 204c) is greater than the distance between the outer sides of partition walls (204b, 204d).

Description

Electrical device with waterproof cover and waterproof cover

The present invention relates to an electrical device provided with a waterproof cover and the waterproof cover.

Even electrical devices that require water resistance and that function electrically, such as antennas that transmit and receive radio waves and filters that extract signals in a predetermined band, may be installed in places where there is a risk of splashing water . In such a case, the electric device is often covered with a waterproof cover (waterproof cover). That is, an electric device installed in a place where there is a risk of water is provided with a waterproof cover and an electric device body covered with the cover.
For example, a flat plate antenna (planar antenna) having a smaller thickness than the length in the vertical and horizontal directions is widely used. The planar antenna includes an antenna body and an antenna cover that covers the antenna body. In many cases, the planar antenna is installed outdoors and is used vertically or tilted with respect to the ground surface.

In Patent Document 1, in an electronic device housing in which a case having a single surface opening and a cover that covers the case opening and the outer wall of the case are connected by a connector, the case has an inner side at a predetermined interval from the outer wall. A drainage mechanism characterized in that a drainage groove is formed between the wall and the outer wall, a drain hole is provided in the drainage groove, and the top surface of the inner wall is slightly higher than the top surface of the outer wall. An electronic device housing with a is described.

Japanese Utility Model Publication No. 63-59383

By the way, in the case of an electric device such as an antenna or a filter, in order to prevent water from entering into the electric device due to rainwater or the like, the electric device main body and the cover are waterproofed with a sealing material or packing. I came. However, waterproofing with a sealing material or packing increases the number of work steps and increases the cost.
Therefore, it is required that the electrical device does not have a harmful effect on the function of the electrical device even if water enters without using a sealing material or packing.
An object of the present invention is to provide an electrical device equipped with a waterproof cover that can suppress the occurrence of harmful effects on the function of the electrical device against water intrusion without using a sealing material or packing. It is in.

For this purpose, an electric device provided with a waterproof cover to which the present invention is applied is required to be waterproof and is combined with an electric member that functions electrically, a fixing member that fixes the electric member, and a fixing member. A waterproof cover for covering the electrical member and a hole for discharging the intruded water, and the waterproof cover is disposed on the upper side and the lower side of the electrical member when the surface of the fixing member intersects the ground surface. A pair of first partition walls and a pair of second partition walls on the right and left sides, the pair of first partition walls and the pair of second partition walls extending so as to contact the fixing member, and a pair of Each of the first partition walls is provided to face the gap between the pair of second partition walls, and the length of each of the pair of first partition walls is equal to the pair of second partition walls in the portion facing the pair of second partition walls. Greater than the distance between the outsides of the two septa
In such an electric device, the waterproof cover further includes a pair of third partition walls outside the pair of second partition walls, the pair of third partition walls extending in contact with the fixing member, and the pair of third partition walls. Each of the third partition walls is provided to face the gap between the pair of first partition walls, and each pair of the third partition walls has a length opposite to the pair of first partition walls. It can be characterized by being greater than the distance between the outsides of one partition.
Thereby, even if it rotates 90 degrees, it is suppressed that a harmful influence arises on the function of an antenna main part.
Further, the hole is a plurality of holes, and is provided on the lower surface of the electric device on the fixing surface side of the electric member in the fixing member and on the surface side facing the fixing member of the waterproof cover. Can do.
Thus, rainwater can be discharged even when the electric device is tilted.
The electric member may be an antenna element, and the fixing member may be a reflector for the antenna element.
Thereby, when an electric apparatus is used as a planar antenna, the number of constituent members can be reduced.

From another point of view, the waterproof cover to which the present invention is applied requires waterproofness, and the surface of the fixing member to which the electrically functioning electric member is fixed is arranged in a direction intersecting the ground surface. A pair of first partition walls on the upper side and a lower side of the electric member, and a pair of second partition walls on the right side and the left side. The pair of first partition walls and the pair of second partition walls serve as the fixing member. The pair of first partition walls are provided so as to be opposed to the gap between the pair of second partition walls, and the length of each of the pair of first partition walls is a pair of second partition walls. Is larger than the distance on the outer side between the pair of second partition walls in the portion facing and is used in combination with the fixing member.
In such a waterproof cover, the pair of third partition walls further includes a pair of third partition walls outside the pair of second partition walls, the pair of third partition walls extending so as to contact the fixing member, and the pair of third partition walls. Are provided opposite to the gap between the pair of first partition walls, and the length of each of the pair of third partition walls is equal to that of the pair of first partition walls at a portion facing the pair of first partition walls. It can be characterized by being greater than the distance between the outsides.
Thereby, even if it rotates 90 degrees, it is suppressed that a harmful influence arises on the function of an electric member.

According to the present invention, it is possible to provide an electrical device equipped with a waterproof cover that can suppress the occurrence of harmful effects on the function of the electrical device against water intrusion without using a sealing material or packing.

It is a figure explaining an example of the outline of the plane antenna in a 1st embodiment. (A) is a perspective view of a planar antenna, (b) is an enlarged view of the corner part of the reflecting plate of the antenna main body in a planar antenna. It is the top view and sectional drawing of the planar antenna in 1st Embodiment. (A) is a plan view of a planar antenna, (b) is a sectional view taken along line IIB-IIB in (a), and (c) is a sectional view taken along line IIC-IIC in (a). It is a figure explaining the discharge route of water when a plane antenna is tilted (it is inclined and arranged). (A) is a side view of the planar antenna when it is set to a positive tilt angle θ, and (b) is a side view of the planar antenna when it is set to a negative tilt angle (−θ). It is the top view and sectional drawing of the planar antenna in 2nd Embodiment. (A) is a plan view of the planar antenna, (b) is a sectional view taken along line IVB-IVB in (a), and (c) is a sectional view taken along line IVC-IVC in (a). It is a figure explaining an example of the outline | summary of the planar antenna in 3rd Embodiment. (A) is a perspective view of a planar antenna, (b) is an enlarged view of the corner part of the reflecting plate of the antenna main body in a planar antenna. It is the top view and sectional drawing of the planar antenna in 3rd Embodiment. (A) is a plan view of a planar antenna, (b) is a sectional view taken along line VIB-VIB in (a), and (c) is a sectional view taken along line VIC-VIC in (a). It is a figure explaining the case where the planar antenna in 3rd Embodiment is installed so that the radio wave of a vertically polarized wave may be transmitted / received. It is a figure explaining the case where the planar antenna in 3rd Embodiment is installed so that the radio wave of a horizontally polarized wave may be transmitted / received. It is a figure explaining an example of the outline | summary of the electronic device in 4th Embodiment. (A) is a perspective view of an electronic device, (b) is an enlarged view of a corner portion of a fixing plate in the electronic device main body.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
In the embodiment of the present invention, in addition to the case where the electrical device is installed outdoors and splashed with rainwater, for example, when the electrical device is installed in the tunnel, water for cleaning the inside of the tunnel, water for an indoor pool, etc. Including the case where the product is exposed to water when it is installed in a location where the splash is applied.
Therefore, in the following, since the electric device according to the embodiment of the present invention also takes water other than rainwater, it is expressed as “water” including rainwater. Further, it is assumed that water is applied not only from the upper direction but also from the left-right direction and the lower direction.
[First Embodiment]
In the first embodiment, a planar antenna 10 will be described as an example of an electric device provided with a waterproof cover.
FIG. 1 is a diagram for explaining an example of an outline of a planar antenna 10 according to the first embodiment. FIG. 1A is a perspective view of the planar antenna 10, and FIG. 1B is an enlarged view of a corner portion of the reflector 110 of the antenna body 100 in the planar antenna 10.
The planar antenna 10 will be described with reference to FIG.
As an example, the external shape of the planar antenna 10 according to the first embodiment is a rectangular parallelepiped box shape that is thinner than the vertical and horizontal directions.
The planar antenna 10 includes an antenna body 100 and an antenna cover 200. The antenna body 100 includes a reflector 110 and an antenna element 120. The antenna cover 200 is disposed so as to face the reflecting plate 110 and is combined with the reflecting plate 110 to form a space. And the antenna element 120 is accommodated in the inside of the space.
Here, the antenna element 120 is an example of an electrical member that functions electrically, and the reflector 110 is an example of a fixing member that fixes the antenna element 120. The antenna cover 200 is an example of a waterproof cover.
However, instead of the reflector 110, another member is used as a fixing member, and the other member and the antenna cover 200 are combined to form a space, and the reflector 110 and the antenna element 120 are accommodated in the space. Good.
In addition, by forming a space with the reflector 110 and the antenna cover 200, the number of members constituting the planar antenna 10 can be reduced.

The reflector 110 of the antenna body 100 includes a bottom plate 111 and four

side walls

112a, 112b, 112c, and 112d that surround the periphery of the bottom plate 111. Here, it is assumed that the bottom plate 111 of the reflection plate 110 is installed vertically or inclined (crossing) with respect to the ground surface, and the side wall 112a is installed on the upper side and the side wall 112c is installed on the lower side.
The reflector 110 is made of an electrically conductive metal plate such as aluminum. Then, the four corners of one metal plate are cut out, the four sides are bent toward the antenna cover 200 with the bottom plate 111 as the center, and the

side walls

112a, 112b, 112c, and 112d are configured by the bent portions. Therefore, as shown in FIG. 1B, a corner portion between the side wall 112b and the side wall 112c, a gap is formed between the side wall 112b and the side wall 112c, and a hole 113b is formed. A hole 113a, a hole 113c, and a hole 113d are also formed in the gap between the other side wall 112a and the side wall 112b, the gap between the side wall 112c and the side wall 112d, and the gap between the side wall 112d and the side wall 112a, respectively. Yes.
When the

side walls

112a, 112b, 112c, and 112d are not distinguished from each other, the side walls 112 and the

holes

113a, 113b, 113c, and 113d are referred to as holes 113, respectively.

The antenna element 120 of the antenna body 100 is a dipole antenna, for example. In FIG. 1A, the antenna body 100 is an array antenna including four antenna elements 120, each of which is a dipole antenna. In FIG. 1A, only one antenna element is denoted by reference numeral (120).

And as shown to Fig.1 (a), as for the antenna element 120 which shows a dipole antenna as an example, two radiation | emission parts are located in an up-down direction, and transmit / receive a vertically polarized wave. That is, the planar antenna 10 is a single polarization antenna that transmits and receives vertical polarization.

When antenna element 120 is a dipole antenna, the number of antenna elements 120 may be other than four.
The antenna element 120 may not be a dipole antenna, but may be a microstrip antenna, a slot antenna, or the like.

The antenna cover 200 includes a cover plate 201 and

side walls

202a, 202b, 202c, and 202d that surround the periphery of the cover plate 201. The side wall 202c is provided with

holes

203a and 203b that penetrate the side wall 202c.
Further, the antenna cover 200 includes partition walls (ribs) 204a, 204b, 204c, and 204d extending from the cover plate 201 toward the bottom plate 111 of the reflection plate 110.

In the planar antenna 10, the side wall 202 of the antenna cover 200 is combined (inserted) so as to be in contact with the outside of the side wall 112 of the reflector 110. At this time, like the side wall 202a of the antenna cover 200 and the side wall 112a of the reflection plate 110, the side wall 202 of the antenna cover 200 and the side wall 112 of the reflection plate 110 correspond to the same alphabetical symbols. Also, the

partition walls

204a, 204b, 204c, and 204d correspond to the same.
That is, the partition wall 204a is disposed on the upper side, the partition wall 204b is disposed on the right side, the partition wall 204c is disposed on the lower side, and the partition wall 204d is disposed on the left side. Here, the

partition walls

204a and 204c are an example of a pair of first partition walls. The

partition walls

204b and 204d are an example of a pair of second partition walls.
The height of the side wall 112 of the reflector 110 is lower than the height of the side wall 202 of the antenna cover 200. That is, as shown in FIG. 1A, the side wall 112 of the reflecting plate 110 overlaps with a part of the side wall 202 of the antenna cover 200 on the opening side of the antenna cover 200 (the side far from the cover plate 201). ing.
The

holes

203a and 203b are provided in a portion of the side wall 202c of the antenna cover 200 that does not overlap the side wall 112c of the reflection plate 110, that is, a side close to the lid plate 201 of the antenna cover 200 (a surface side facing the reflection plate 110). It has been.

The antenna cover 200 is made of an ABS (acrylic butylene styrene) resin, an ASA (acrylic styrene acrylonitrile) resin, or the like that is highly transmissive to radio waves transmitted and received by the antenna body 100. The antenna cover 200 is formed by, for example, injection molding. Therefore, the cover plate 201, the

side walls

202a, 202b, 202c, 202d, the

holes

203a, 203b, and the

partition walls

204a, 204b, 204c, 204d of the antenna cover 200 are integrally molded. By forming by integral molding by injection molding or the like, even a complicated structure including the

partition walls

204a, 204b, 204c, and 204d can be easily formed.
Of course, the antenna cover 200 may be formed by cutting or a combination of a plurality of plate materials. In addition, the material of the antenna cover 200 is not limited to the above-described resin, but may be other materials as long as the material transmits radio waves.
When the

side walls

202a, 202b, 202c, and 202d are not distinguished from each other, the side wall 202 and the

holes

203a and 203b are not distinguished from each other, and the hole 203 and the

partition walls

204a, 204b, 204c, and 204d are not distinguished from each other. Described as a partition wall 204.

In the planar antenna 10, after the reflector 110 is combined with the antenna cover 200, the side wall 112 of the reflector 110 and the side wall 202 of the antenna cover 200 are fixed by screws (not shown) or the like.
However, the reflector 110 and the antenna cover 200 are not sealed with a sealing material such as silicone resin or acrylic resin, or packing such as silicone rubber. Therefore, water may enter the planar antenna 10 from the outside.

FIG. 2 is a plan view and a cross-sectional view of the planar antenna 10 according to the first embodiment. 2A is a plan view of the planar antenna 10, FIG. 2B is a cross-sectional view taken along the line IIB-IIB in FIG. 2A, and FIG. 2C is an IIC in FIG. 2A. It is sectional drawing in the -IIC line.
In FIG. 2, the same parts as those in FIG. In FIGS. 2B and 2C, the antenna cover 200 is hatched.

As shown in FIG. 2A, the

partition walls

204a, 204b, 204c, and 204d of the antenna cover 200 in the planar antenna 10 are linearly provided in parallel with the

side walls

202a, 202b, 202c, and 202d of the antenna cover 200, and Arranged in four directions of the element 120. The

partition walls

204a, 204b, 204c, and 204d are provided separately without being connected (connected).
Further, as shown in FIGS. 2B and 2C, each of the

partition walls

204 a, 204 b, 204 c, and 204 d extends from the cover plate 201 of the antenna cover 200, and their front ends are the bottom plate 111 of the reflector 110. It is comprised so that it may contact (contact | adhere).
Further, the length in the left-right direction of each of the upper partition 204a and the lower partition 204c is set to be larger than the distance in the left-right direction (outside distance) between the right partition 204b and the left partition 204d. Yes. That is, when viewed from the upper side, the upper partition wall 204a is provided so as to face the gap between the right partition wall 204b and the left partition wall 204d. When viewed from the lower side, the lower partition 204c is provided so as to face the gap between the right partition 204b and the left partition 204d.

FIG. 2A shows the flow of water when water enters the planar antenna 10.
When the planar antenna 10 is installed outdoors, water falls not only from the upper side of the planar antenna 10 but also from the lower side, right side, left side, front side (antenna cover 200 side), and back side (reflector 110 side). Therefore, the planar antenna 10 is required to be configured to suppress the generation of harmful effects on the function of the antenna body 100, that is, the function of transmitting and receiving radio waves, with respect to jet water from all directions. It is done.

Here, it is assumed that the antenna cover 200 is injection-molded, and the cover plate 201 has no hole for water to enter.
A connector (not shown) for transmitting and receiving signals to and from the antenna element 120 is connected to the reflecting plate 110 through the bottom plate 111. However, it is assumed that the periphery of the portion of the bottom plate 111 through which the connector passes is sealed with a sealing material or an O-ring so that water does not enter. Therefore, it is assumed that the bottom plate 111 in the reflecting plate 110 has no holes for water to enter.
However, the planar antenna 10 is assembled by inserting the antenna cover 200 into the reflection plate 110 of the antenna body 100, and the space between the reflection plate 110 and the antenna cover 200 is not sealed with a sealing material or packing. Therefore, a gap between the side wall 112 of the reflecting plate 110 and the side wall 202 of the antenna cover 200, a screw portion that fixes the side wall 202 of the antenna cover 200 and the side wall 112 of the reflecting plate 110, and a hole provided in the side wall 202c of the antenna cover 200. Water may enter through the

holes

113a, 113b, 113c, 113d, etc. at the

corners

203a, 203b and the reflector 110.

In FIG. 2A, the flow α of water entering from the upper side, the flow β of water entering from the right side, the flow γ of water entering from the left side, the flow of water entering from the lower side inside the planar antenna 10. δ indicates the flow of water ε entering from the

holes

203a and 203b in the side wall 202c of the antenna cover 200. The water flows α, β, γ, and δ are the gaps between the side wall 112 of the reflecting plate 110 and the side wall 202 of the antenna cover 200 and the screws that fix the side wall 202 of the antenna cover 200 and the side wall 112 of the reflecting plate 110. The flow of water other than the water (water flow ε) entering from the

holes

203a, 203b provided in the side wall 202c of the antenna cover 200 such as the

holes

113a, 113b, 113c, 113d in the corners of the reflector 110 Illustrated.
The flow α of water entering from the upper side hits the partition wall 204a and goes to the left and right sides. Of the water flow α, the flow toward the right side is directed downward along the outside (right side) of the partition wall 204b. Of the water flow α, the flow toward the left side is directed downward along the outer side (left side) of the partition wall 204d. The water flow β entering from the right side hits the partition wall 204b and goes downward. Similarly, the water flow γ entering from the left side hits the partition wall 204d and goes downward. The water flow δ entering from the lower side hits the partition wall 204c and goes downward. The water flow ε entering from the

holes

203a and 203b in the side wall 202c of the antenna cover 200 hits the partition wall 204c and goes downward. These flows are directed to the

holes

203a and 203b in the side wall 202c of the antenna cover 200 and / or the

holes

113b and 113c in the reflector 110. And the water which penetrate | invaded the inside of the planar antenna 10 is discharged | emitted outside.

As described above, in the antenna cover 200, the water flow α entering from the upper side is caused by the partition wall 204a, the water flow β entering from the right side is caused by the partition wall 204b, and the water flow γ entering from the left side is caused by the partition wall 204a. The water flow δ entering from the lower side by 204d is caused by the partition wall 204c, and the water flow ε entering from the

holes

203a and 203b is caused by the partition wall 204c by the region 130 where the antenna element 120 is disposed (FIG. 2B). (See (c)) is suppressed.
Then, the water that has entered the planar antenna 10 is guided by the

partition walls

204a, 204b, 204c, and 204d as described above, and is discharged from the

holes

203a and 203b and / or the

holes

113b and 113c.

Note that water that has entered the region 130 where the antenna element 120 is disposed for some reason flows along the partition 204c, and / or between the partition 204b and the partition 204c, and / or between the partition 204c and the partition 204d. It goes out of the region 130 through the gap and is discharged from the

holes

203a and 203b and / or the

holes

113b and 113c.
That is, even if water enters the area 130 where the antenna element 120 is disposed, the water is discharged.

As described above, in the planar antenna 10 of the first embodiment, the reflecting plate 110 and the antenna cover 200 are not sealed with the sealing material or the packing by providing the antenna cover 200 with the

partition walls

204a, 204b, 204c, and 204d. Even if water enters the inside of the planar antenna 10, the occurrence of harmful effects on the function of the antenna body 100 is suppressed.

Note that even if the reflector 110 of the planar antenna 10 and the antenna cover 200 are sealed with a sealing material or packing, water may enter through a gap caused by thermal expansion or the like. For this reason, although the hole which discharges | emits the water which penetrate | invaded is performed, the hole will become a water entrance.

On the other hand, it is conceivable that the

partition walls

204a, 204b, 204c, and 204d of the antenna cover 200 are continuously formed in a mouth shape to surround the region 130 where the antenna element 120 is disposed. However, if water enters the area 130 where the antenna element 120 is disposed due to some factor, the intruded water is hardly discharged. Therefore, in the first embodiment, the

partition walls

204a, 204b, 204c, and 204d of the antenna cover 200 are provided separately without being connected (connected).
Then, the length in the left-right direction of the upper partition 204a is made larger than the distance in the left-right direction (outside distance) between the partition 204b and the partition 204d, so that water entering from the upper side flows on the partition 204a. When flowing downward from the left and right ends, it flows outside (right side) of the partition wall 204b and outside (left side) of the partition wall 204d so as not to enter the region 130 where the antenna element 120 is provided.

It should be noted that the

partition walls

204a, 204b, 204c, and 204d may be configured not to be separated but partially continuous. In this case, even if water enters the region 130 where the antenna element 120 is provided, the intruded water may be discharged. For example, the upper and left and

right partition walls

204a, 204b, and 204d may be configured to be continuous so that water does not easily enter the region 130 where the antenna element 120 is provided. In this case, water that has entered the region 130 for some reason is discharged from the gap between the

partition walls

204b and 204c and the gap between the

partition walls

204c and 204d.

FIG. 3 is a diagram illustrating a water discharge path when the planar antenna 10 is tilted (disposed to be disposed). 3A is a side view of the planar antenna 10 when the positive tilt angle θ is set, and FIG. 3B is a side view of the planar antenna 10 when the negative tilt angle (−θ) is set. It is.
As shown in FIG. 3A, in the case of a positive tilt angle θ in which the plane antenna 10 transmits and receives radio waves (the surface of the cover plate 201 of the antenna cover 200) is tilted downward with respect to the horizontal plane, Water that has entered the planar antenna 10 is discharged from the

holes

203 a and 203 b provided in the side wall 202 c of the antenna cover 200. Here, the

holes

203a and 203b provided in the side wall 202c of the antenna cover 200 are examples of holes provided on the surface side facing the fixing member of the waterproof cover.
As shown in FIG. 3B, in the case of a negative tilt angle (−θ) in which the plane antenna 10 transmits and receives radio waves (the plane of the cover plate 201 of the antenna cover 200) is tilted upward with respect to the horizontal plane. The water that enters the planar antenna 10 is discharged from the

holes

113b and 113c of the reflector 110. Here, the

holes

113b and 113c of the reflecting plate 110 are examples of holes provided on the fixing surface side of the fixing member.
That is, even if the flat antenna 10 is tilted to be positive or negative, water that enters the flat antenna 10 is discharged. As described above, the hole 113b is a gap between the side wall 112b and the side wall 112c of the reflector 110, and the hole 113c is a gap between the side wall 112c and the side wall 112d. Instead of the

holes

113b and 113c, other holes may be provided so that water is discharged in the case of a negative tilt angle (−θ).

[Second Embodiment]
FIG. 4 is a plan view and a cross-sectional view of the planar antenna 10 according to the second embodiment. 4A is a plan view of the planar antenna 10, FIG. 4B is a cross-sectional view taken along the line IVB-IVB in FIG. 4A, and FIG. 4C is an IVC in FIG. 4A. It is sectional drawing in the -IVC line.
Although the outer shape of the planar antenna 10 in the first embodiment is a rectangular parallelepiped, the planar antenna 10 in the second embodiment has an elliptical planar shape when viewed from the cover plate 201 side of the antenna cover 200. .
The same parts as those in FIG. 2 in the first embodiment are denoted by the same reference numerals, description thereof will be omitted, and different parts will be described.

The reflection plate 110 of the antenna main body 100 in the planar antenna 10 includes a bottom plate 111 having an elliptical planar shape and a side wall 112 provided continuously around the bottom plate 111. Similarly, the antenna cover 200 includes a cover plate 201 having an elliptical plan shape and a side wall 202 provided continuously around the cover plate 201.
Further, the planar antenna 10 includes four

partition walls

204a, 204b, 204c, and 204d, as in the first embodiment. Among these, as shown to Fig.4 (a), the three

partition walls

204a, 204b, 204d are shapes along the outer periphery of an ellipse. The remaining partition 204c does not follow the outer edge of the ellipse, and conversely, the central portion in the left-right direction is convex upward.
The planar antenna 10 includes a hole 205 on the lower side of the antenna cover 200.

Therefore, the water flow α entering the planar antenna 10 from the upper side hits the partition wall 204a and goes to the left and right sides. Of the water flow α, the flow toward the right side is directed downward along the outside (right side) of the partition wall 204b. Of the water flow α, the flow toward the left side is directed downward along the outer side (left side) of the partition wall 204d.
The water flow β entering from the right side hits the partition wall 204b and goes downward. Similarly, the water flow γ entering from the left side hits the partition wall 204d and goes downward. The water flow δ entering from the lower side hits the partition wall 204c and goes downward.
The water flow ε entering from the lower hole 205 of the antenna cover 200 hits the partition wall 204c and goes downward. These flows are directed toward the lower hole 205 of the antenna cover 200. And the water which penetrate | invaded the inside of the planar antenna 10 is discharged | emitted outside.

As described above, the water flow α entering from the upper side of the antenna cover 200 is caused by the partition wall 204a, the water flow β entering from the right side is caused by the partition wall 204b, and the water flow γ entering from the left side is changed by the partition wall 204d. Thus, the water flow δ entering from the lower side is suppressed by the partition wall 204c, and the water flow ε entering the hole 205 is suppressed from entering the region 130 where the antenna element 120 is disposed by the partition wall 204c. .
The water flows α, β, γ, and δ are the gaps between the side wall 112 of the reflecting plate 110 and the side wall 202 of the antenna cover 200 and the screws that fix the side wall 202 of the antenna cover 200 and the side wall 112 of the reflecting plate 110. The flow of water other than water entering from the hole 205 provided in the side wall 202c of the antenna cover 200, such as a portion, is collectively illustrated.

Then, water that enters the region 130 where the antenna element 120 is provided for some reason also flows to the left and right along the partition wall 204c and is discharged in the same manner as other water.

The number of holes 205 is not limited to one, and when the planar antenna 10 is installed with a positive or negative tilt angle, water is introduced to the outside of the planar antenna 10 so that water entering the planar antenna 10 is discharged to the outside. A hole may be provided on the side of the antenna cover 200 close to the bottom plate 111 and the side of the antenna cover 200 close to the lid plate 201.
In addition, a hole near the bottom plate 111 of the reflecting plate 110 is formed by providing a slit (slit) in the side wall 112 of the reflecting plate 110 (the hole 113b of the reflecting plate 110 of the first embodiment (FIG. 1 ( It is good also as a hole similar to b) see) etc.

As described above, also in the planar antenna 10 according to the second embodiment, the reflector plate 110 and the antenna cover 200 are bonded with the sealing material or packing by providing the antenna cover 200 with the

partition walls

204a, 204b, 204c, and 204d. Even if water does not seal and water penetrates into the planar antenna 10, it is possible to suppress a harmful effect on the function of the antenna body 100.

[Third Embodiment]
FIG. 5 is a diagram illustrating an example of an outline of the planar antenna 10 according to the third embodiment. FIG. 5A is a perspective view of the planar antenna 10, and FIG. 5B is an enlarged view of a corner portion of the reflector 110 of the antenna body 100 in the planar antenna 10.
The planar antenna 10 of the first embodiment and the planar antenna 10 of the second embodiment transmit and receive vertically polarized radio waves. In this case, when the planar antenna 10 is rotated 90 ° to the right in order to obtain the planar antenna 10 that transmits and receives horizontally polarized waves, the gap between the partition wall 204a and the partition wall 204d and the partition wall 204c, as can be seen from FIG. Water enters the region 130 where the antenna element 120 is provided from the gap with the partition wall 204d. Therefore, it is necessary to remove the antenna cover 200 of the planar antenna 10 and change the direction of the antenna element 120 in the antenna body 100.
The planar antenna 10 according to the third embodiment is rotated by 90 ° in the plane of the bottom plate 111 of the reflector 110 so that the planar antenna 10 that transmits and receives horizontally polarized radio waves or the plane that transmits and receives vertically polarized radio waves is transmitted. The antenna 10 can be used.
The same parts as those of the planar antenna 10 of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, description thereof will be omitted, and different parts will be described.

In the planar antenna 10 according to the first embodiment, the antenna cover 200 includes four

partition walls

204a, 204b, 204c, and 204d. In contrast, in the planar antenna 10 of the third embodiment, the antenna cover 200 further includes

partition walls

204e and 204f in addition to the four

partition walls

204a, 204b, 204c, and 204d. That is, the partition wall 204e is provided outside (right side) the partition wall 204b provided on the right side and outside the

partition walls

204a and 204c. The partition wall 204f is provided outside (on the left side) the partition wall 204d provided on the left side and outside the

partition walls

204a and 204c. Note that the

partition walls

204a, 204b, 204c, 204d, 204e, and 204f are provided separately without being connected (connected).
Here, the

partition walls

204e and 204f are an example of a pair of third partition walls.

In the planar antenna 10 of the first embodiment, the

holes

203a and 203b are provided in the side wall 202c of the antenna cover 200. On the other hand, the planar antenna 10 of the third embodiment further includes

holes

203c and 203d in the side wall 202b of the antenna cover 200.

FIG. 6 is a plan view and a cross-sectional view of the planar antenna 10 according to the third embodiment. 6A is a plan view of the planar antenna 10, FIG. 6B is a sectional view taken along line VIB-VIB in FIG. 6A, and FIG. 6C is a VIC in FIG. 6A. FIG.
In FIG. 6, the same parts as those in FIG. In FIGS. 6B and 6C, the antenna cover 200 is hatched.

As shown in FIG. 6A, the length of the right partition 204e in the vertical direction and the length of the left partition 204f in the vertical direction are the vertical length between the upper partition 204a and the lower partition 204c. It is set larger than the direction distance (outside distance). That is, when viewed from the right side, the right partition 204e is provided to face the gap between the upper partition 204a and the lower partition 204c. When viewed from the left side, the left partition 204f is provided to face the gap between the upper partition 204a and the lower partition 204c.
The distance in the left-right direction (inner distance) between the right partition 204e and the left partition 204f is set larger than the lengths of the upper partition 204a and the lower partition 204c.
As shown in FIG. 6B, the

partition walls

204e and 204f of the antenna cover 200 also extend from the cover plate 201 of the antenna cover 200 in the same manner as the

partition walls

204a, 204b, 204c, and 204d, and their front ends are the reflecting plate 110. The bottom plate 111 is reached and brought into contact (contact).

Next, a case where the planar antenna 10 is installed so as to transmit and receive vertically polarized radio waves and a case where it is installed so as to transmit and receive horizontally polarized radio waves will be described.
FIG. 7 is a diagram illustrating a case where the planar antenna 10 according to the third embodiment is installed so as to transmit and receive vertically polarized radio waves.
FIG. 7 shows a discharge path of water entering the inside of the planar antenna 10.

The water flow α entering from the upper side hits the partition wall 204a and goes to the left and right sides. In the water flow α, the flow toward the right side passes between the partition wall 204b and the partition wall 204e and moves downward. In the water flow α, the flow toward the left side passes between the

partition walls

204d and 204f and travels downward. The water flow β entering from the right side hits the partition wall 204e and goes downward. Similarly, the water flow γ entering from the left side hits the partition wall 204f and goes downward. The water flow δ entering from the lower side hits the partition wall 204c and goes downward. Then, the water flow ε entering from the

holes

203c and 203d in the right antenna cover 200 hits the partition wall 204e and goes downward. Further, the water flow ζ entering from the

holes

203a and 203b in the lower antenna cover 200 hits the partition wall 204c and goes downward. These flows are directed to the

holes

203a and 203b of the side wall 202c of the antenna cover 200 and / or the holes 113b between the

side walls

112b and 112c of the reflector 110 and the holes 113c between the

side walls

112c and 112d. . And the water which penetrate | invaded the inside of the planar antenna 10 is discharged | emitted outside.

As described above, the water flow α entering from the upper side of the antenna cover 200 is caused by the partition wall 204a, the water flow β entering from the right side is caused by the partition wall 204e, and the water flow γ entering from the left side is changed by the partition wall 204f. Thus, the water flow δ entering from the lower side is caused by the partition wall 204c, the water flow ζ entering from the

holes

203a and 203b is caused by the partition wall 204c, and the water flow ε entering from the

holes

203c and 203d is caused by the partition wall 204e. Intrusion into the region 130 where the antenna element 120 is disposed is suppressed.
That is, when the flat antenna 10 is installed so as to transmit and receive vertically polarized radio waves, the space between the reflector 110 of the antenna body 100 and the antenna cover 200 is not sealed with a sealing material or packing, and water is supplied to the flat antenna 10. Even if it penetrates into the inside of the antenna, it is possible to suppress a harmful influence on the function of the antenna body 100 in the planar antenna 10.
The water flows α, β, γ, and δ are the gaps between the side wall 112 of the reflecting plate 110 and the side wall 202 of the antenna cover 200 and the screws that fix the side wall 202 of the antenna cover 200 and the side wall 112 of the reflecting plate 110. From the

holes

203a, 203b provided in the side wall 202c of the antenna cover 200, such as the

holes

113a, 113b, 113c, 113d in the corners of the reflector 110, and the water flow ζ entering from the

holes

203c, 203b provided in the side wall 202b. The flow of water other than the intruding water flow ε is illustrated collectively.

FIG. 8 is a diagram illustrating a case where the planar antenna 10 according to the third embodiment is installed so as to transmit and receive horizontally polarized radio waves.
FIG. 8 shows a discharge path of water entering the inside of the planar antenna 10.

The water flow α entering from the upper side hits the partition wall 204f and goes to the left and right sides. In the water flow α, the flow toward the right side is directed downward through the outside (right side) of the partition wall 204a. In the water flow α, the flow toward the left side passes through the outside (left side) of the partition wall 204c and proceeds downward. The water flow β entering from the right side hits the partition wall 204a and goes downward. Similarly, the water flow γ entering from the left side hits the partition wall 204c and goes downward. The water flow δ entering from the lower side hits the partition wall 204e and goes downward. Then, the water flow ε entering from the

holes

203a and 203b in the left side wall 202c of the antenna cover 200 hits the partition wall 204c and goes downward. Further, the water flow ζ entering from the

holes

203c and 203d in the lower side wall 202b of the antenna cover 200 hits the partition wall 204e and goes downward. These flows are directed to the

holes

203 c and 203 d of the side wall 202 b of the antenna cover 200 and / or the

holes

113 a and 113 b of the reflector 110. And the water which penetrate | invaded the inside of the planar antenna 10 is discharged | emitted outside.

As described above, the water flow α entering from the upper side of the antenna cover 200 is caused by the partition wall 204f, the water flow β entering from the right side is caused by the partition wall 204a, and the water flow γ entering from the left side is caused by the partition wall 204c. Thus, the flow of water δ entering from the lower side is caused by the partition wall 204e, the flow of water ε entering from the

holes

203a and 203b is caused by the partition wall 204c, and the flow of water ζ entering from the

holes

203c and 203d is caused by the partition wall 204e. Intrusion into the region 130 where the antenna element 120 is disposed is suppressed.

That is, even when the planar antenna 10 is installed by being rotated 90 ° so as to transmit and receive horizontally polarized radio waves, the space between the reflector 110 of the antenna body 100 and the antenna cover 200 is sealed with a sealing material or packing. Even if water intrudes into the planar antenna 10, it is possible to suppress a harmful influence on the function of the antenna body 100.
The water flows α, β, γ, and δ are the gaps between the side wall 112 of the reflecting plate 110 and the side wall 202 of the antenna cover 200 and the screws that fix the side wall 202 of the antenna cover 200 and the side wall 112 of the reflecting plate 110. From the

holes

203a and 203b provided in the side wall 202c of the antenna cover 200, such as the

holes

113a, 113b, 113c, and 113d in the corners of the reflector 110, and from the

holes

203c and 203d provided in the side wall 202b. The flow of water other than the invading water flow ζ is illustrated collectively.

As described above, when the planar antenna 10 is installed to receive vertically polarized radio waves by providing the

partition walls

204a, 204b, 204c, 204d, 204e, and 204f on the antenna cover 200 of the planar antenna 10, In any case where the antenna is rotated to receive horizontally polarized radio waves, even if water enters the planar antenna 10, the occurrence of harmful effects on the function of the antenna body 100 is suppressed. Yes.

[Fourth Embodiment]
In the first to third embodiments, the planar antenna 10 has been described as an example of an electric device including a waterproof cover. In the fourth embodiment, the electronic device 20 will be described as another example of an electric device provided with a waterproof cover.
FIG. 9 is a diagram for explaining an example of an outline of the electronic device 20 according to the fourth embodiment. FIG. 9A is a perspective view of the electronic device 20, and FIG. 9B is an enlarged view of a corner portion of the fixing plate 310 in the electronic device main body 300.
The electronic device 20 according to the fourth embodiment includes a fixing plate 310, an electronic device main body 300 including an electronic circuit 320 such as a filter fixed to the fixing plate 310, and an electronic device cover 400 that covers the electronic device main body 300. I have.
Here, the electronic circuit 320 is another example of an electric member that functions electrically, and the fixing plate 310 is another example of a fixing member that fixes the electronic circuit 320. The electronic device cover 400 is an example of a waterproof cover.

The fixed plate 310 includes a bottom plate 311 and four

side walls

312 a, 312 b, 312 c, and 312 d surrounding the bottom plate 311. Here, it is assumed that the bottom plate 311 of the fixed plate 310 is installed vertically or tilted (so as to intersect) with respect to the ground surface, and the side wall 312a is installed on the upper side and the side wall 312c is installed on the lower side.
The fixing plate 310 is made of a metal plate such as aluminum in the fourth embodiment, but may be made of other materials such as resin as long as the electric member can be fixed. Then, the four corners of one metal plate are cut out, the four sides are bent toward the electronic device cover 400 with the bottom plate 311 as the center, and the

side walls

312a, 312b, 312c, and 312d are configured by the bent portions. Therefore, as shown in FIG. 9B, a corner portion between the side wall 312b and the side wall 312c, a gap is formed between the side wall 312b and the side wall 312c, and a hole 313b is formed. A hole 313a, a hole 313c, and a hole 313d are also formed in the gap between the other side wall 312a and the side wall 312b, the gap between the side wall 312c and the side wall 312d, and the gap between the side wall 312d and the side wall 312a, respectively. Yes.
When the

side walls

312a, 312b, 312c, and 312d are not distinguished from each other, the side walls 312 and the

holes

313a, 313b, 313c, and 313d are referred to as holes 313.

In FIG. 9A, the electronic device 20 includes three electronic circuits 320, but only one electronic circuit 320 is denoted by reference numeral (320). Moreover, although the electronic device 20 arrange | positions the three electronic circuits 320 in Fig.9 (a), the number is not restricted to three. Furthermore, although the electronic circuit 320 is exemplified by a filter, the electronic circuit 320 is not necessarily a filter, and may be any device that has an electrical action such as a distributor or an amplifier. Further, the electronic device 20 may be configured by combining a filter, a distributor, an amplifier, and the like.

The electronic device cover 400 includes a cover plate 401 and

side walls

402a, 402b, 402c, and 402d that surround the periphery of the cover plate 401. The side wall 402c is provided with

holes

403a and 403b penetrating the side wall 402c.
Furthermore, the electronic device cover 400 includes partition walls (ribs) 404 a, 404 b, 404 c, and 404 d that extend from the lid plate 401 toward the bottom plate 311 of the fixed plate 310. When the

side walls

402a, 402b, 402c, and 402d are not distinguished from each other, the side wall 402 and the

partition walls

404a, 404b, 404c, and 404d are referred to as the partition walls 404.

In the electronic device 20, the side wall 402 of the electronic device cover 400 is combined (inserted) so as to contact the outside of the side wall 312 of the fixing plate 310. At this time, like the side wall 402a of the electronic device cover 400 and the side wall 312a of the fixing plate 310, the side wall 402 of the electronic device cover 400 and the side wall 312 of the fixing plate 310 correspond to the same alphabetical symbols.
Moreover, the partition 404 respond | corresponds similarly. That is, the partition 404a is disposed on the upper side, the partition 404b is disposed on the right side, the partition 404c is disposed on the lower side, and the partition 404d is disposed on the left side. Here, the

partition walls

404a and 404c are an example of a pair of first partition walls. The

partitions

404b and 404d are an example of a pair of second partitions.
The height of the side wall 312 of the fixing plate 310 is lower than the height of the side wall 402 of the electronic device cover 400. That is, as shown in FIG. 9A, the side wall 312 of the fixing plate 310 overlaps with a part of the side wall 402 of the electronic device cover 400 on the opening side (the side far from the cover plate 401) of the electronic device cover 400. It has become.
The

holes

403a and 403b are portions of the side wall 402c of the electronic device cover 400 that do not overlap the side wall 312c of the fixing plate 310, that is, the side close to the lid plate 401 of the electronic device cover 400 (the surface side facing the fixing plate 310). Is provided.

The electronic device cover 400 is made of, for example, an ABS resin or an ASA resin that can be easily molded. The electronic device cover 400 is formed by, for example, injection molding. Therefore, the cover plate 401, the

side walls

402a, 402b, 402c, and 402d, the

holes

403a and 403b, and the

partition walls

404a, 404b, 404c, and 404d of the electronic device cover 400 are integrally molded. By forming by integral molding by injection molding or the like, even a complicated structure including

partition walls

404a, 404b, 404c, and 404d can be easily formed.
Of course, the electronic device cover 400 may be configured by machining by cutting or a combination of a plurality of plate materials. Further, the material of the electronic device cover 400 is not limited to the resin, and may be a metal such as aluminum.

In the electronic device 20, after the fixing plate 310 is combined with the electronic device cover 400, the side wall 312 of the fixing plate 310 and the side wall 402 of the electronic device cover 400 are fixed by screws (not shown) or the like.
However, the fixing plate 310 and the electronic device cover 400 are not sealed with a sealing material such as silicone resin or acrylic resin, or packing such as silicone rubber. Therefore, water may enter the electronic device 20 from the outside.

However, in the electronic device 20 of the fourth embodiment, as with the planar antenna 10 in the first embodiment, the partition 404 is provided in the electronic device cover 400, so that the fixing plate 310, the electronic device cover 400, Even if water enters the inside of the electronic device 20 without being sealed with a sealing material or packing, it is possible to suppress a harmful influence on the function of the electronic device 20, that is, the electronic circuit 320.
Since it is the same as that described in the first embodiment, detailed description thereof is omitted.
Similarly to the third embodiment, a partition wall similar to the

partition walls

204e and 204f illustrated in FIG. 5 may be further provided outside the

partition walls

403a, 403b, 403c, and 403d.

In the first to third embodiments, when the antenna cover 200 is made of resin, the partition 204 is easy to adhere to the surface in contact with the reflecting plate 110, and water is separated from the partition of the antenna cover 200. Intrusion into the region 130 where the antenna element 120 is disposed through the gap between the reflector 204 and the reflector 110 is suppressed.
Further, although the surface of the cover plate 201 of the antenna cover 200 is assumed to be flat, a concave portion or / and a convex portion may be provided in order to increase mechanical strength.

Similarly, in the fourth embodiment, when the electronic device cover 400 is formed of a resin, the partition 404 of the electronic device cover 400 is easily brought into close contact with the surface contacting the fixing plate 310, and water is covered with the electronic device cover. Intrusion into the region 330 where the electronic circuit 320 is disposed through the gap between the partition wall 404 and the fixing plate 310 of 400 is suppressed.
In addition, although the surface of the cover plate 401 of the electronic device cover 400 is flat, a concave portion or / and a convex portion may be provided in order to increase mechanical strength.

The waterproof cover may include a fixing member.

DESCRIPTION OF SYMBOLS 10 ... Planar antenna, 20 ... Electronic device, 100 ... Antenna main body, 110 ... Reflector plate, 111, 311 ... Bottom plate, 112, 112a, 112b, 112c, 112d, 202, 202a, 202b, 202c, 202d, 312, 312a, 312b, 312c, 312d ... sidewall, 113, 113a, 113b, 113c, 113d, 203, 203a, 203b, 203c, 203d, 205, 313, 313a, 313b, 313c, 313d, 403a, 403b ... hole, 120 ... antenna element , 130, 330 ... area, 200 ... antenna cover, 201, 401 ... cover plate, 204, 204a, 204b, 204c, 204d, 204e, 204f, 404, 404a, 404b, 404c, 404d ... partition wall, 300 ... electronic device main body 310 ... solid Plate, 320 ... electronic circuit, 400 ... electronic device cover

Claims

An electrical member that requires waterproofing and functions electrically,
A fixing member for fixing the electric member;
In combination with the fixing member, a waterproof cover that covers the electric member;
A hole for discharging the intruded water,
When the waterproof cover is arranged so that the surface of the fixing member intersects the ground surface, a pair of first partition walls on the upper and lower sides of the electric member, and a pair of second walls on the right and left sides. And the pair of first partition walls and the pair of second partition walls are in contact with the fixing member, and each of the pair of first partition walls is between the pair of second partition walls. The length of each of the pair of first partition walls is greater than the distance between the outside of the pair of second partition walls in the portion facing the pair of second partition walls. An electrical device characterized by.
The waterproof cover further includes a pair of third partition walls outside the pair of second partition walls,
The pair of third partition walls extend so as to contact the fixing member, and each of the pair of third partition walls is provided to face a gap between the pair of first partition walls. 3. The electric device according to claim 1, wherein each of the three partition walls has a length greater than a distance between the outside of the pair of first partition walls in a portion facing the pair of first partition walls.
The hole is a plurality of holes, provided on the lower side of the electric device, on the fixing surface side of the electric member in the fixing member, and on the surface side of the waterproof cover facing the fixing member. The electric device according to claim 1, wherein the electric device is characterized.
3. The electric apparatus according to claim 1, wherein the electric member is an antenna element, and the fixing member is a reflector for the antenna element.
A pair of first partition walls on the upper side and the lower side of the electric member when the surface of the fixing member that is waterproof and has an electrically functioning electric member fixed thereon is arranged in a direction intersecting the ground surface And a pair of second partition walls on the right side and the left side,
The pair of first partition walls and the pair of second partition walls extend so as to contact the fixing member, and each of the pair of first partition walls faces the gap between the pair of second partition walls. Each of the pair of first partition walls is longer than the distance between the pair of second partition walls at a portion facing the pair of second partition walls, and is combined with the fixing member. Waterproof cover characterized by being used.
A pair of third partition walls on the outside of the pair of second partition walls;
The pair of third partition walls extend so as to contact the fixing member, and each of the pair of third partition walls is provided to face a gap between the pair of first partition walls. 6. The waterproof cover according to claim 5, wherein the length of each of the three partition walls is greater than the distance between the outside of the pair of first partition walls in a portion facing the pair of first partition walls.