JP2003158465A - Antenna device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna device for performing radio transmission and reception which has a small, light and simple structure, excellent waterproofing property, and satisfactory internal heat dissipation while including all needed configurations. SOLUTION: A housing 2 has two divided structures of a lower casing 3 made of metal and a radome 4 made of resin, and a mounting board 30 is freely attachable and detachable to/from the lower casing 3. A planar antenna 31, a power supply part 32 and a transmitting and receiving part which are the whole configuring parts are mounted on the mounting board 30. The planar antenna 31 and an RF part 33c are simply connected only by being mounted on the mounting board 30, and by attaching and detaching the mounting board 30, each configuring part can be easily assembled, maintained and inspected. A power supply case 32a is subjected to heat radiation from radiating fins 3a on the bottom face of the lower casing 3 through a thermo-conductive member 35 provided on the bottom face 7b of a housing space 7. A component 33d can also be subjected to heat radiation through a thermo- conductive member 36 in a similar manner. The thermo-conductive members 35 and 36 have flexible property and can be always brought into contact with a power supply cable 32a and the component 33d that generates heat without being affected by their mounted state or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device for transmitting and receiving radio waves, and more particularly, it has all the components necessary for transmitting and receiving radio waves built therein to improve waterproofness and heat dissipation inside the housing. The present invention relates to an antenna device.

[0002]

2. Description of the Related Art FWA (Fixed Wireless) is used to increase the speed and capacity of wireless data communication.
ess Access) technology. In this FWA,
A configuration in which antennas are arranged opposite to each other in a nearby building or the like to transmit and receive data (PP: Point-Point)
(Communication) or transmitting / receiving data between one base station and a plurality of subscriber stations (P-MP: Point-Mu)
However, in both cases, no cable laying is required, and immediate opening and reduction of construction cost are attempted.

In FWA, an antenna unit (ODU) installed on the roof of a building and an indoor unit (I) installed indoors
DU), a coaxial cable that connects the antenna and the IDU, and the like.

In a normal antenna, a transmitter / receiver unit including a high-frequency unit and a control unit, and units such as a power supply unit are mounted in a waterproof casing, a parabolic antenna or the like is mounted as an antenna outside the casing, and a high-frequency wave is generated by a waveguide or the like. The antenna is either connected to the cable or the plane antenna is housed in the housing, and is also connected to the high frequency part by a waveguide or coaxial cable.

[0005]

However, with the increasing demands for miniaturization of equipment and cost reduction, it is impossible to miniaturize the antenna device with the conventional structure, and even if the antenna device is forcibly packed, heat dissipation and waterproofing are not achieved. As a result, the reliability of the antenna device is deteriorated.

The present invention has been made to solve the above problems, and is an antenna device which incorporates all the components required for radio transmission / reception, is small and lightweight, is excellent in waterproofness, and has good heat dissipation inside. The purpose is to provide.

[0007]

In order to achieve the above object, the antenna device of the present invention is provided with an FWA (Fixed Wireless Accesses) for subscriber wireless access.
An antenna device including a transmitter / receiver unit used in (s), the mounting plate (3) having a waveguide-shaped through hole (30b).
0), a planar antenna (31) having a waveguide interface (31r) on the side of the mounting plate at the position of the through hole (30r) of the mounting plate, and a signal input to the antenna device is converted into a radio wave. And a transmission / reception unit (33) for inverse conversion and transmission / reception, and an RF unit (33) that is a part of the transmission / reception unit.
In c), the waveguide interface (3) is provided at the position of the through hole of the mounting plate on the mounting plate side on the back side from the planar antenna.
3r), a power supply unit (32) for supplying power for operating the transmitting / receiving unit, a lower housing (3) including a housing space (7) housing the components, and the lower housing. A radome (4) made of a material that is detachable from the body and capable of transmitting and receiving radio waves by the planar antenna, and the radome (4) integrally provided on the bottom surface of the lower housing, and each of the components in the accommodation space. Radiating fins (3a) that radiate the heat generated in the section
And are provided.

Further, the fins (3a) may be arranged in a matrix so as to project in a groove (3b) orthogonal to the bottom surface of the lower housing (3).

The accommodation space (7) of the lower housing (3) is formed by walls (6) provided upright on four sides, and is detachably attached to the upper end surface of the wall so as to cover the accommodation space. A mounting plate (30) is provided, and the mounting plate (30) is provided on each of the components (31, 3).
2, 33) are attached, and the respective constituent parts other than the connection connector or the cable (50) can be housed and taken out in the housing space integrally with the mounting plate.

The bottom surface (7b) of the accommodation space (7)
Is provided with a heat conducting member (35) having a spring property in the opening direction of the accommodating space in correspondence with the position of the power supply case (32a) of the power supply unit (32), and is generated in the power supply unit. The heat can be conducted to the lower housing (3).

The bottom surface (7b) of the accommodation space (7)
The necessary number of heat conductive members (36) having a spring property in the opening direction of the accommodation space are provided corresponding to the arrangement positions of heat generating components (33d) such as LSI in the transmitting / receiving unit (33). Alternatively, the heat generated in the heat generating component may be conducted to the lower housing (3).

Further, the lower casing (3) has a ring-shaped waterproof elastic member (1) contacting the entire outer peripheral surface (6a) of the wall.
1), the radome (4) is provided with an engagement protrusion (14) that fits in the groove, and an inner peripheral surface (14) of the engagement protrusion is provided.
The b) may have a configuration in which a tapered surface (17) is formed to contact the elastic member at a predetermined angle to waterproof the accommodation space (7).

A positioning protrusion (8) is formed on the lower casing (3) along the outer peripheral edge of the lower casing (3), and the positioning protrusion and the wall (6) form the protrusion. A circumferential groove (9) is formed, and an outer peripheral surface (14a) of the engaging projection (14) of the radome (4) is engaged with an inner peripheral surface (8a) of the positioning projection (8). A configuration in which a tapered surface (16) having a predetermined angle is formed can also be used.

Further, the lower housing (3) and the radome (4) are formed in a flat rectangular shape, and the peripheral groove (9) is formed.
Each of the four corners (9d) has a predetermined space in which the curvature of the wall (6) is larger than the curvature of the positioning protrusion (8), and the radome is fixed to the corners. It may have a structure in which a hole (10) for forming is formed.

Further, the heat dissipation fin (3a) is provided with a mounting tool (42) at a place where the apparatus is installed, and a mounting screw hole (40) for radiating the heat is formed in the mounting tool. You can also

According to the above structure, the antenna device includes the lower housing 3 and the radome 4 which is detachable from the lower housing 3.
Composed of. In the accommodation space 7 of the lower housing 3, an antenna 31, a transmission / reception unit 33 for converting input / output data into radio waves and transmitting / receiving from the antenna 31, and a power supply unit for supplying power for operating the transmission / reception unit 33. All 32 are accommodated, and this antenna device can be directly connected to a personal computer device to transmit and receive data wirelessly. Each component accommodated in the accommodation space 7 is attached to one attachment plate 30, and maintenance can be easily performed by attaching and detaching the attachment plate 30. The radiating fins 3a of the lower housing 3 are accommodated in the accommodation space 7
Dissipates the heat generated internally. In particular, in the power supply unit 32 that generates a large amount of heat, the power supply case 32a can directly conduct heat to the lower housing 3 via the heat conductive member 35 having a spring property, and can dissipate heat from the radiation fins 3a of the lower housing 3.

[0017]

FIG. 1 is an overall perspective view showing an antenna device of the present invention. The housing 2 of the antenna device 1 is formed in a substantially square shape when seen in a plane and has a predetermined thickness,
A lower housing 3 made of metal and a radome 4 made of resin 2
It has a divided structure.

Radiating fins 3a are formed on the entire bottom surface of the lower housing 3. The radome 4 includes a substantially flat upper surface 4a and a mounting portion 4 protruding downward from four sides of the upper surface 4a.
b, the four side corners of the upper surface are formed in an arc shape having a predetermined curvature when viewed in a cross section.

FIG. 2 is a plan view of the lower housing 3, and FIG. 3 is a sectional view taken along the line AA of FIG. 2 (the intermediate portion is omitted). In FIG. 3, the cross section of the radome 4 at the same position is also shown at the upper position. The lower housing 3 has a wall 6 having a predetermined height along the four sides, and a storage space 7 having a square shape and a predetermined depth is formed.
Further, in the outermost peripheral parts of the four sides along the outer diameter of the lower housing 3,
Positioning projections 8 are provided upright on the upper surface. A circumferential groove 9 having a predetermined width and height for mounting the radome 4 is formed between the wall 6 and the positioning projection 8.

An annular elastic member 11 is provided at the bottom of the circumferential groove 9 along the outer periphery of the wall 6. As the elastic member 11, for example, a general-purpose O ring can be used, and an elastic member having an inner diameter that closely follows the wall 6 is used. Mounting holes 12 are provided on the upper surface of the wall 6 at predetermined intervals. In the example shown in FIG. 2, two mounting holes 12 are provided per side, and the mounting hole 12 portion is formed thick.

At the lower end of the mounting portion 4b of the radome 4, an engaging projection 14 is formed so as to be fitted into the circumferential groove 9 of the lower housing 3. As shown in FIG.
The outer peripheral surface 14a is in contact with the inner peripheral surface 8a of the positioning projection 8, and is formed with a step so that the positioning projection 8 is as thin as the thickness of the positioning projection 8.

The inner peripheral surface 14b of the engaging projection 14 has a constant space with the wall 6 and does not come into direct contact with it. A taper surface 16 is formed on the outer peripheral surface 14a side at the tip portion (lowermost portion) of the engaging projection 14. A taper surface 17 having a predetermined angle is also formed on the inner peripheral surface 14b.

At the four corners of the housing 2 (2A in FIG. 1),
The positioning projection 8 is formed such that the corner portion 2A has a small radius of curvature. On the other hand, in the wall 6, the curvature of the corner portion 2A is set to be large. As a result, the circumferential groove 9 has the corner 9
The distance between the wall 6 and the positioning projection 8 is set large only for d, and a hole 10 through which a screw for mounting the radome 4 is inserted is formed in this space (corresponding to the right side of FIG. 3). .

Correspondingly, in the radome 4, the corner portion 14d of the engaging projection 14 has the same size as the outer peripheral surface 14a along the outer periphery of the corner portion 9d of the lower housing 3. In addition, the inner peripheral surface 14b of the radome 4 is formed thick so as to have the above-mentioned constant distance from the wall 6. The thick corner portion 14d has a screw hole 15a formed at a position corresponding to the position of the hole 10 of the lower housing 3. The screw hole 15a is provided integrally with the receiving tool 15 having the radome 14 with the screw hole opened at the time of molding.

FIG. 4 is a partially enlarged view showing a mounted state of the radome 4 on the lower housing 3. FIG. 4 (a) shows FIG.
Corresponds to an enlarged view of the left side portion of FIG. At the time of this mounting, the tapered surface 16 formed on the outer peripheral surface 14a of the engaging projection 14 can easily engage with the positioning projection 8. In particular, since the radome 4 is made of resin, the central portions of the four sides are easily deformed so as to extend outward. Even in such a case, the taper surface 16 is provided on the outer peripheral surface 1 of the engagement protrusion 14.
4a is guided so as to contact the inner peripheral surface 8a of the positioning projection 8.

The tapered surface 17 formed on the inner peripheral surface 14b of the engaging projection 14 presses the elastic member 11 obliquely from above. As a result, the elastic member 11 is deformed as shown in the drawing, and the tapered surface 17, the bottom of the circumferential groove 9 and the outer peripheral surface 6 of the wall 6 are deformed.
The shape is in contact with the three points of a. This makes it possible to waterproof the accommodation space 7 after mounting the radome 4. The tip of the engaging projection 14 can be waterproofed without necessarily contacting the bottom of the circumferential groove 9 as illustrated.

As described above, the tapered surface 17 is not a structure for crushing the elastic member 11 for waterproofing, but is a structure for deforming by a contact point and a contact pressure that can withstand intrusion of water (water pressure or the like) from the outside. It is possible to obtain a stable waterproofing effect for a long period of time.

FIG. 4 (b) is a view showing a mounted state at the corner portion 2A of the housing 2. Also at the four corners of the lower housing 3 (corners 9d of the circumferential groove 9), the tapered surface 17 of the radome 4 contacts and presses the elastic member 11 in the same manner as described above, and the accommodation space 7 of the radome 4 is waterproofed. As shown in the drawing, screws 4 are inserted into the holes 10 of the lower housing 3 at the four corners, respectively.
0 is inserted and screwed into the screw hole 15a of the radome 4 to fix and hold the mounted state of the radome 4. In this way, the radome 4 is fixed by the screws 20 at the respective corners 2A of the casing 2, so that only the fixed portion of the radome 4 does not unnecessarily project at the outer edge portion of the casing 2 and the flat surface 4 The rectangular housing 2 can be configured, and manufacturing, handling, and installation can be facilitated.

Next, the heat dissipation structure inside the housing 2 will be described. FIG. 5 is a side sectional view showing a component housed in the housing space 7. All the components to be accommodated are provided on one mounting plate 30, and by mounting the mounting plate 30 on the lower housing 3, they can be collectively mounted (or removed).

As shown by the alternate long and short dash line in FIG.
Has an outer shape (width and length) slightly larger than the outer shape of the substantially square wall 6 and is attached so as to close the accommodation space 7 from above. The mounting plate 30 is detachably fixed to the mounting hole 12 formed in the wall 6 of the lower housing 3 by using a screw 30a.

FIG. 6 is a block diagram showing the components housed in the housing space 7. As shown in the figure, inside the accommodating space 7, each part that constitutes the antenna device is unitized,
It is attached to the attachment plate 30. A planar antenna 31 is provided on the mounting plate 30. The planar antenna 31 transmits and receives radio waves via the resin radome 4.

A power supply section 32 and a transmitting / receiving section 33 are fixed to the lower portion of the mounting plate 30. The transmitting / receiving unit 33 has an IF unit 33.
a, a base band portion 33b, and an RF portion 33c. The power supply unit 32 supplies a power supply V for operation to each unit of the transmission / reception unit 33.

As shown in FIG. 5, the power supply unit 32 is provided on the printed board 34a on the lower surface of the mounting plate 30, and the power supply unit 32 is housed in the power supply case 32a. The transmitter / receiver 33 is composed of electronic components mounted on the printed circuit board 34b on the lower surface of the mounting plate 30.

In the accommodating space 7, especially the power supply unit 3
2 heats up. The power supply unit 32 has the following heat dissipation structure. The power supply case 32a of the power supply unit 32 is provided in a substantially rectangular parallelepiped shape at a position shown by a dotted line in FIG. A heat conductive member 35 is arranged on the bottom surface 7b of the accommodation space 7 so as to face the bottom surface 32b of the power supply case 32a.

The heat conductive member 35 is formed of a plate-shaped spring member having good heat conductive characteristics, and is provided in a shape extending in the lengthwise direction according to the shape of the bottom surface 32b of the power source case 32a, as shown in FIG. Has been. As shown in FIG. 5, the heat conductive member 35 includes a base portion 35a fixed to the bottom surface 7b of the lower housing 3 with a screw 37 and a direction of the bottom surface 32b of the power supply case 32a of the power supply portion 32 with respect to the base portion 35a (accommodation space). The contact portion 35b is curved in a direction toward the opening 7). The contact portion 35b is formed in a plurality of comb shapes in order to maintain the spring property, as shown in FIG.

Further, on the bottom surface 7b of the lower housing 3, a heat conductive member 36 having a spring property in the opening direction of the accommodation space 7 corresponding to the arrangement position of the component 33d that generates heat such as LSI in the transmission / reception section 33. Are provided in the required number. The heat generated in the component 33d is conducted to the lower housing 3 via the heat conductive member 36. The heat conductive member 36 is also the heat conductive member 35.
Similarly, a base portion 36a fixed with a screw 37 and a base portion 36a
The contact portion 36b is curved with respect to.

FIG. 7 is a bottom view of the lower housing 3. Radiating fins 3a are formed on the bottom surface of the lower housing 3 so as to project as shown. The radiating fins 3a shown in the figure are formed in a matrix so as to project from the bottom surface integrally with the lower housing 3 by forming linear grooves 3b that are orthogonal to the vertical and horizontal directions of the lower housing 3. As shown in the figure, the radiation fins 3a are exposed from the bottom surface 7b on the accommodation space 7 side to the radiation fins 3a.
A configuration may be adopted in which the excess wall thickness is removed while maintaining a predetermined wall thickness along the protruding shape of a.

With this heat radiation fin 3a, the power supply unit 32
The heat generated in 1 is conducted to the lower housing 7 from the bottom surface 32b of the power supply case 32a via the heat conductive member 35, and can be radiated to the outside by the radiation fins 3a. The radiating fins 3a are formed so as to protrude by the orthogonal groove portions 3b, so that the heat radiating effect is enhanced. That is, since an air flow in any of the X and Y directions that are orthogonal to each other when viewed in the side direction of the lower housing 7 can pass through the groove portion 3b, the air flow hits a larger number of the heat radiation fins 3a to radiate heat. The effect can be enhanced.

According to the structure described above, all the constituent parts can be housed in the housing part 7 by one operation of mounting the mounting plate 30 on the lower housing 3. Further, when performing maintenance, inspection, etc. of the components attached to the attachment plate 30, it becomes easy to remove the radome 4 and remove the attachment plate 30.

Further, the waveguide interface 31r of the planar antenna 31 and the waveguide interface 33r of the RF section 33c are connected through the waveguide-shaped through hole 30r of the mounting plate 30. This eliminates the need for a coaxial cable, a connector, and a waveguide for connection, which have been conventionally required. Therefore, the size can be reduced (thin shape), the number of parts can be reduced, and the cost can be reduced because of easy assembly.

Further, since the heat conductive member 35 has a spring property with respect to the mounting direction (vertical direction) of the mounting plate 30, when the mounting plate 30 is mounted on the housing 3, the power supply case 32a bottom surface 32b of the power supply section 32 is mounted. Can be satisfactorily contacted with, and stable heat dissipation can be performed. In addition, the depth of the accommodation space 7 of the lower housing 3, the power supply case 32 of the power supply unit 32,
Manufacturing dimensions such as the height of a and the power supply unit 3 for the mounting plate 30
Even if there is a change in the mounting tolerance of 2a, the mounting state of the mounting plate 30 with respect to the wall 6, etc.
The heat dissipation effect can be obtained by contacting the power supply case 32a.

The antenna device 1 having the above-described structure is installed on a support or the like through a mounting screw hole 40 provided on the bottom surface. As shown in FIG. 7, mounting screw holes 40 are formed on the bottom surface of the lower housing 3 in the radiating fins 3a at the edge of the lower housing 3 at a predetermined pitch and at equal intervals. In the illustrated example, the mounting screw hole 40 is arranged at a target position separated from each of the virtual lines X and Y passing through the centers of the width and length of the lower housing 3 by a predetermined distance.

FIG. 8 is a perspective view showing an installation example of the antenna device 1. The illustrated example is an example in which the pole 42 is used as a fixture for the installation location. A bracket 43 is attached to the pole 42. The bracket 43 includes a mounting plate 44 and a pair of support columns 4 pivotally supported by the mounting plate 44 and rotatable.
It is composed of 5. The mounting plates 44 are a pair of plates that sandwich the pole 42 from both sides and are fixed with bolts and nuts. The column 45 is attached to the attachment plate 44 with a bolt 46, and is rotatable around the screw 46 portion.

The pair of struts 45 each have a length corresponding to the outer shape (width or length) of the lower housing 3, and are attached to the pair of mounting screw holes 40 provided on the bottom surface of the lower housing 3 with mounting screws. Attached via 48 and fixed. An arcuate restriction groove 44a is formed in the mounting plate 44 along the rotation direction around the bolt 46. In the restriction groove 44a portion, a bolt 47a and a nut are provided between the mounting plate 44 and the support 45. 47 b is provided, and the fastening column 45, that is, the rotating position of the antenna device 1 can be held at an arbitrary angular position by tightening the bolt 47.

Thus, the antenna device 1 can easily adjust the angle so that the directivity of the planar antenna 31 housed inside faces the other antenna device 1. Further, since the radiation fins 3a are attached to the mounting plate 44, the generated heat can be conducted to the mounting plate 44, and the heat radiation effect can be further enhanced.

The antenna device 1 having the above-described structure is provided in the lower housing 3
The connection hole 50 (see FIGS. 1 and 2) is opened only at one location on the side. A power supply line and a data line can be connected through this opening 50. The data line can be directly connected to a personal computer (PC) or the like, and data can be wirelessly transmitted / received with a simple configuration.

The antenna device 1 includes the antenna 31, the transmitter / receiver 33, and the power supply 32 required for wireless transmission / reception in a single housing 2. Since the antenna 1 is compact and lightweight, it can be easily installed. , FWA etc. data transmission / reception system can be constructed at low cost in a short period of time.

[0048]

According to the present invention, all the components required for wireless transmission / reception of input / output data are housed in the housing space, and it is possible to realize an antenna device that is small, lightweight and easy to install. The heat generated inside the accommodation space can be dissipated by the heat dissipating fins provided in the lower housing, enabling stable wireless transmission / reception. By forming the heat radiation fins integrated with the lower housing in a matrix, the heat radiation effect can be further enhanced without being affected by the direction of the air flow.

Further, by attaching all the constituent parts such as the antenna, the transmission / reception circuit, and the power supply part, which are housed in the housing space, to the mounting plate, it is possible to easily carry out maintenance and inspection by attaching and detaching the mounting plate. In addition, the bottom surface of the lower housing is provided with a heat conductive member that has a spring property and contacts the power supply case of the power supply unit attached to the mounting plate, so that the heat generated in the power supply unit is directly applied to the lower housing. The heat can be conducted and the heat can be dissipated from the heat dissipating fins to improve the heat dissipating property. In addition, by providing a heat conducting member on the bottom surface of the lower housing, which has a spring property and comes into contact with each other in correspondence with the arrangement position of a heat generating component such as LSI in the transmitting / receiving unit attached to the mounting plate, The generated heat is directly conducted to the lower housing and can be dissipated from the heat dissipating fins to improve the heat dissipating property.

Further, the taper surface formed on the radome-side engaging projection obliquely comes into contact with the elastic member on the lower housing side to waterproof, so that the elastic member is crushed to be waterproof. The waterproof performance can be improved. Further, the radome is made of a material such as resin which is easily bent for wireless transmission / reception by the planar antenna. By forming a taper surface on the outer peripheral surface of the engaging protrusion of the radome, the radome can be removed from the peripheral groove portion of the lower housing. It becomes possible to easily mount the device. Further, with respect to the dimensional error that occurs when the radome and the lower housing are separately processed, such as a molded product, the structure of the present invention does not press the elastic member from the vertical direction as in the past, but obliquely. Since it is pressed against, a high waterproof effect can be obtained.

Further, when the lower housing is formed in a quadrangular shape in a plane, spaces are created at the four corners of the circumferential groove to secure the location for fixing the radome, so that the outer edge of the housing 2 is fixed to the radome. Only the flat surface 4
A rectangular housing can be configured, manufacturing and handling are easy, and the mounting direction can be arbitrarily set at 90 degrees during installation. In addition, by forming a screw hole for installing the antenna device in the heat radiation fin portion and enabling the fixture to be fixed, the heat of the heat radiation fin can be radiated to the fixture, further enhancing the heat radiation effect. Will be able to.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of an antenna device of the present invention.

FIG. 2 is a plan view of a lower housing that constitutes the antenna device.

FIG. 3 is a partially cutaway side sectional view of a housing.

FIG. 4 is a diagram for explaining a mounting state of a lower housing and a radome.

FIG. 5 is a side sectional view showing each component housed in the housing space.

FIG. 6 is a block diagram showing an electrical configuration of the antenna device.

FIG. 7 is a bottom view of the antenna device.

FIG. 8 is a perspective view showing an installed state of the antenna device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Antenna device, 2 ... Housing, 2A ... Corner part, 3 ... Lower housing, 3a ... Radiating fin, 3b ... Groove part, 4 ... Radome, 4
b ... mounting part, 6 ... wall, 7 ... accommodation space, 7b ... bottom surface, 8 ...
Positioning protrusion, 8a ... Inner peripheral surface, 9 ... Circumferential groove, 9d ... Corner, 10 ... Hole, 11 ... Elastic member, 12 ... Mounting hole, 14 ...
Engaging projections, 14a ... Outer peripheral surface, 14b ... Inner peripheral surface, 14d ...
Corner portion, 15a ... Screw hole, 15 ... Receptor, 16 ... Tapered surface, 17 ... Tapered surface, 30 ... Mounting plate, 31 ... Planar antenna, 32 ... Power supply section, 32a ... Power supply case, 33 ... Transceiver section, 33a ... IF part, 33b ... Base band part, 33
c ... RF section, 34a, 34b ... Printed circuit board, 35, 3
6 ... Thermally conductive member, 37 ... Screw, 40 ... Mounting screw hole, 4
2 ... Pole, 43 ... Bracket, 44 ... Mounting plate, 50 ...
Connector or cable.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takashi Hitai             5-10-10 Minamiazabu, Minato-ku, Tokyo Henri             Tsu Co., Ltd. F-term (reference) 5J021 AA01 CA02 DA02 HA05                 5J046 AA15 RA11                 5J047 AA15 BB11                 5K011 AA03 AA06 AA13 AA14

Claims (9)

[Claims] 1. FWA (Fix) such as subscriber wireless access
An antenna device including a transmitter / receiver used for ed wireless access, comprising: a mounting plate (30) having a waveguide-shaped through hole (30b).
A planar antenna (31) having a waveguide interface (31r) on the side of the mounting plate at the position of the through hole (30r) of the mounting plate; and a signal input to the antenna device for converting to a radio wave and vice versa. The transmitting / receiving unit (33) for converting and transmitting and receiving, and the RF unit (33c) which is a part of the transmitting / receiving unit, guides the planar antenna from the planar antenna to the back side of the mounting plate at the position of the through hole of the mounting plate. A power supply unit (32) having a tube interface (33r) and supplying power for operating the transmitting / receiving unit.
A lower housing (3) having a housing space (7) for housing the respective components, and a material that is detachable from the lower housing and capable of transmitting and receiving radio waves by the planar antenna. A radome (4), and a radiation fin (3a) that is integrally provided on the bottom surface of the lower housing and radiates heat generated in each of the components in the housing space. Antenna device. 2. The antenna device according to claim 1, wherein the fins (3a) are arranged in a matrix so as to be projected by grooves (3b) orthogonal to a bottom surface of the lower housing (3). 3. The housing space (7) of the lower housing (3) is formed by walls (6) provided upright on four sides, and is detachably attached to an upper end surface of the wall so as to cover the housing space. A mounting plate (30) is provided, and the constituent parts (31, 32, 33) are mounted on the mounting plate, and the constituent parts except the connection connector or the cable (50) are integrated with the mounting plate. The antenna device according to any one of claims 1 and 2, which can be housed in and taken out from a housing space. 4. The bottom surface (7b) of the accommodating space (7) has a spring property in the opening direction of the accommodating space corresponding to the position of the power supply case (32a) of the power supply section (32). The antenna device according to any one of claims 1 to 3, further comprising a heat conduction member (35), which conducts heat generated by the power supply unit to the lower housing (3). 5. The bottom surface (7b) of the accommodation space (7) corresponds to an arrangement position of a component (33d) that generates heat such as LSI in the transmission / reception unit (33) in the opening direction of the accommodation space. The antenna device according to any one of claims 1 to 3, wherein a required number of heat conductive members (36) having a spring property are provided, and heat generated in the heat generating component is conducted to the lower housing (3). 6. A ring-shaped elastic member (11) for waterproofing, which is in contact with the entire outer peripheral surface (6a) of the wall of the lower housing (3).
The radome (4) is provided with an engagement protrusion (14) that fits in the groove, and the inner peripheral surface (14b) of the engagement protrusion has a predetermined angle with respect to the elastic member. The antenna device according to any one of claims 1 to 5, wherein a tapered surface (17) is formed so as to come into contact with and waterproof the accommodation space (7). 7. The lower casing (3) is formed with a positioning protrusion (8) protruding along the outer peripheral edge of the lower casing (3), and the positioning protrusion and the wall (6) form the protrusion. A peripheral groove (9) is formed, and an outer peripheral surface (14) of the engaging protrusion (14) of the radome (4) is formed.
In a), the inner peripheral surface (8a) of the positioning protrusion (8) is shown.
Taper surface (1
The antenna device according to claim 1, wherein 6) is formed. 8. The lower housing (3) and radome (4)
Is formed in a flat quadrangular shape, and the four corners (9d) of the circumferential groove (9) are formed such that the curvature of the wall (6) is larger than the curvature of the positioning protrusion (8). 8. The antenna device according to claim 7, wherein the antenna device has a predetermined space and a hole (10) for fixing the radome is formed at the corner. 9. A mounting screw hole (40) for radiating the heat is attached to the radiator fin (3a) by attaching a fixture (42) at a place where the device is installed. The antenna device according to any one of 1 to 8.