JPH09135111A - Receiving planar antenna device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To prevent the original waterproof function of a roofing material from being impaired even after long-term use. An antenna element is provided on an antenna sheet.
In the planar antenna device for reception in which the antenna main body 37 provided with the above is attached to the lower surface side of the roof material 39, the antenna main body 37 is formed so that the water passage 47 is formed in the outer peripheral portion of the lower surface of the roof material 39. Is affixed to a position spaced inward from the outer peripheral edge of the roof material 39.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving planar antenna device in which an antenna element is integrally incorporated in a roofing material.

[0002]

2. Description of the Related Art In order to prevent the appearance of a building from being damaged and the damage or radio interference caused by external factors such as wind and rain, an antenna element for TV reception is installed on a roof. There has been proposed a planar antenna device for reception which is integrally incorporated in a material. In this type of conventional receiving planar antenna device, an antenna element is provided by applying a conductive paint or attaching a conductor such as a conductive tape to an antenna sheet made of a plastic film to form an antenna main body. The antenna body was attached to the lower surface of the roofing material (for example, Japanese Patent Laid-Open No. 7-106846).
issue).

[0003]

However, in the conventional case,
There is a risk that water may enter between the roof material and the antenna body, impairing the original waterproof function of the roof material. In view of the above problems, the present invention prevents the original waterproof function of the roofing material from being impaired even after long-term use.

[0004]

A first technical means of the present invention for solving this technical problem is an antenna body 37 in which an antenna element 11 is provided on an antenna sheet 12.
However, in the receiving planar antenna device attached to the lower surface side of the roof material 39, the antenna main body 37 has the outer peripheral edge of the roof material 39 so that the water passage 47 is formed in the outer peripheral portion of the lower surface of the roof material 39. The point is that it is attached to a position spaced inward from.

The second technical means is the antenna sheet 12.
The antenna body 37 having the antenna element 11 provided in
In the receiving planar antenna device attached to the lower surface side of the roof material 39, an adhesive layer 38 for attaching the antenna body 37 to the roof material 39 is provided between the antenna body 37 and the roof material 39. The roof member 39 and the antenna body 3 are provided in a ring shape so as to surround the outer periphery of the element 11.
The adhesive layer 38 is spaced inwardly from the outer peripheral edge of the antenna body 37 so as to form a water passage 47 in the outer peripheral portion between the adhesive body layer 7 and the antenna body 7.

A third technical means is to use the adhesive layer 38.
Is a lower side portion 41 along the lower end edges of the antenna body 37 and the roof material 39, a pair of side edge portions 42 along side edge edges of the antenna body 37 and the roof material 39, and upper end edges of the antenna body 37 and the roof material 39. And an upper side portion 43 along the adhesive layer 3
8 is provided with a pair of inclined side portions 44 that are inclined outward and upward at both ends of the lower side portion 41.

Therefore, the difference in the amount of expansion and contraction due to the temperature between the antenna body 37 and the roof material 39 can be sufficiently absorbed in the portion without the adhesive layer 38, and the antenna body 37 will be damaged even after long-term use. Disappears. Further, the adhesive layer 38 can reliably block rainwater from entering the antenna element 11 side at the center of the lower surface of the roof member 39. In addition, the water passage 47 makes it possible to secure a drainage area for rainwater around the lower surface of the roof material 39 at the outer peripheral portion between the roof material 39 and the antenna body 37. Further, when pressure is applied to the entire adhesive material layer 38 so that rainwater is pushed up from the lower portion of the roof material 39 under strong wind, the pressure can be avoided outward by the inclined side portions 44 at both ends thereof.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. 1 to 5, reference numeral 11 denotes a TV receiving antenna element, which is arranged between two antenna sheets 12 made of a plastic film. That is, the antenna element 11 is formed by applying a conductive paint or pasting a conductor such as a conductive tape on the surface of the one antenna sheet 12, and sandwiching the antenna element 11 in the one antenna sheet 12 in a sandwich shape. Thus, the other antenna sheet 12 is polymerized, and the antenna sheets 12 are adhered to each other with an adhesive.

The antenna element 11 has a pair of side portions 15, another side portion 16, and a pair of power feeding side portions 17 protruding inward from one end of the pair of side portions 15. A pair of power supply sides 17
A pair of feeding points 18 are installed at opposite ends of the. A bent portion 21 is interposed between the pair of side portions 15 of the antenna element 11. The bent portion 21 has a characteristic similar to a linear side portion obtained by linearly extending the bent portion 21, and can be replaced with a long straight side portion of the antenna element 11. Therefore, by interposing the bent portion 21 between the pair of side portions 15, the pair of opposing side portions 15 of the antenna element 11 is formed to be short, so that the entire size of the antenna element 11 can be reduced to the size of a unit building material such as a roof material. It is possible to shorten the length and integrate the antenna element 11 with a unit building material such as a roof material.

At the feeding point 18 portion of the antenna sheet 12, a feeding box 23 made of plastic or the like is provided as shown in FIG.
Is attached to the feeding point 18 of the antenna sheet 12 so as to project downward by sandwiching the pair of antenna sheets 12 between the flange 24 of the feeding box 23 and the lid member 25.

An insertion hole 27 is provided at the bottom of the power supply box 23. A screw shaft 28 is inserted into the insertion hole 27, and nuts 29 and 30 screwed onto the screw shaft 28 are used to form the screw shaft 2.
8 is fastened and fixed to the bottom of the feeding box 23. The screw shaft 28 is attached to the connector 33 of the coaxial cable 32.
By detachably attaching the pair of feeding points 18 of the antenna element 1 to the transformer 3 in the feeding box 23.
5 and the screw shaft 28 is connected to the coaxial cable 32 through an electric wire fitted inside. Coaxial cable 32
Is for connecting the antenna element 11 to the receiver side.

The antenna element 11, the two antenna sheets 12, the feeding box 23 and the like constitute an antenna main body 37, and the antenna main body 37 includes the adhesive layer 3
It is affixed to the lower surface of the roofing material 39 by means of No. 8, whereby the antenna element 11 is integrally incorporated in the roofing material 39 which is an exterior building material. The adhesive layer 38 is formed of, for example, a double-sided adhesive tape, or is formed by applying an adhesive to the spacer.

The roofing material 39 to which the antenna main body 37 is attached is placed together with another roofing material 39 on the roof plate of the roof via a waterproof sheet, as shown in FIG. The adhesive layer 38 is provided in a ring shape between the antenna body 37 and the roof material 39 so as to surround the outer periphery of the antenna element 11, and a lower side portion 41 along the lower end edges of the antenna body 37 and the roof material 39, The antenna main body 37 and the roof material 39 are provided with a pair of side edge portions 42 along the side edge edges thereof, and the antenna body 37 and the roof material 39 upper edge portions 43 along the upper edge thereof, and both ends of the lower edge portion 41 of the adhesive material layer 38. The portion is provided with a pair of inclined side portions 44 that are inclined outward and upward. The lower side portion 41, the pair of side side portions 42, the upper side portion 43, and the inclined side portion 44 of the adhesive material layer 38 are all provided at a distance of 2 to 5 cm inside from the outer peripheral edge of the antenna main body 37, whereby the roof material. A water passage 47 is formed in the outer peripheral portion between the antenna body 39 and the antenna body 37, so that a drainage area for rainwater around the lower surface of the roof material 39 can be secured. Further, when pressure is applied to the entire adhesive material layer 38 so that rainwater is pushed up from the lower part of the roofing material 39 under strong wind, the inclined side portions 44 at both ends of the adhesive material layer 38 avoid the pressure outward. There is.

FIG. 7 shows another embodiment, in which the size of the antenna main body 37 is formed to be slightly smaller than the size of the roof material 39, and the adhesive material layer 38 is attached to the outer peripheral edge portion of the antenna main body 37. By this, a water passage 47 is formed in the outer peripheral portion of the lower surface of the roof material 39 outside the antenna body 37,
Here, the drainage area around the bottom surface of the roof material 39 can be secured. Other points are the same as those of the above-described embodiment.

FIG. 8 shows another embodiment, in which the antenna main body 37 is constructed in the same size and shape as the roof material 39, and the adhesive layer 38 is formed from the outer peripheral edge portions of the antenna main body 37 and the roof material 39. It is provided at a distance of ˜5 cm inside, so that a water passage 47 is formed in the outer peripheral portion of the lower surface of the roof material 39, that is, in the outer peripheral portion between the roof material 39 and the antenna main body 37. It is designed so that drainage areas around the rainwater can be secured. Other points are the same as those of the above-described embodiment.

In the above embodiment, the antenna body 37 is provided with the antenna element 11 which is formed by applying a conductive paint or pasting a conductor such as a conductive tape between the two antenna sheets 12. However, instead of this, the antenna main body 37 may be configured by forming the antenna element 11 on the surface of one antenna sheet 12, and the antenna element 1 may be formed on three or more antenna sheets 12.
It may be configured by applying 1.

[0017]

According to the present invention, the antenna body 37 is attached to a position spaced inward from the outer peripheral edge of the roof material 39 so as to form the water passage 47 in the outer peripheral portion of the lower surface of the roof material 39. Therefore, it is possible to secure the drainage area of the rainwater that goes around the lower surface of the roof material 39. Therefore, there is no fear of impairing the original waterproof function of the roof material 39.

Further, even if the antenna main body 37 and the roofing material 39 differ greatly in the amount of expansion and contraction due to temperature, the adhesive material layer 3
Since 8 is provided in a ring shape, the difference in the amount of expansion and contraction due to the temperature of both can be sufficiently absorbed in the portion without the adhesive layer 38, and the antenna body 3 can be used even for a long period of time.
7 will not be damaged. Moreover, since the adhesive layer 38 is provided so as to surround the outer periphery of the antenna element 11, the adhesive layer 38 reliably blocks rainwater from entering the antenna element 11 side at the center of the lower surface of the roof 39. Therefore, there is no fear that the function of the antenna element 11 is impaired by the attachment of rainwater.

Further, since a pair of inclined side portions 44 inclined outwardly upward are provided at both ends of the lower side portion 41 of the adhesive material layer 38, rainwater is pushed up from the lower portion of the roof material 39 under strong wind. Thus, when pressure is applied to the entire adhesive layer 38, the pressure can be avoided outward by the inclined side portions 44 at both ends thereof, and rainwater can be prevented from entering the antenna element 11 side under strong wind. And more reliably roofing material 3
9. The original waterproof function can be enhanced.

[Brief description of the drawings]

FIG. 1 is a plan view of an antenna body showing an embodiment of the present invention.

FIG. 2 is a rear view of the antenna device.

FIG. 3 is a side sectional view of the antenna device.

FIG. 4 is a side view of the antenna device.

FIG. 5 is an enlarged cross-sectional view of the antenna body.

FIG. 6 is a perspective view showing an installed state of the antenna device.

FIG. 7 is a side sectional view of an antenna device showing another embodiment.

FIG. 8 is a side sectional view of an antenna device showing another embodiment.

[Explanation of symbols]

 11 Antenna Element 12 Antenna Sheet 37 Antenna Main Body 38 Adhesive Layer 39 Roofing Material 41 Lower Side 42 Side Side 43 Upper Side 44 Slope Side 47 Passage

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kensuke Ishida 1-247 Shikitsuhigashi, Naniwa-ku, Osaka-shi, Osaka Kubota Corporation

Claims (3)

[Claims] 1. A planar antenna device for reception in which an antenna body (37) having an antenna element (11) provided on an antenna sheet (12) is attached to a lower surface side of a roof material (39). The antenna body (37) is attached to the roofing material (3) so as to form a water passage (47) in the outer peripheral portion of the lower surface of (39).
9) A planar antenna device for reception, which is attached at a position spaced inward from the outer peripheral edge of 9). 2. A planar antenna for reception in which an antenna body (37) having an antenna element (11) provided on an antenna sheet (12) is attached to a lower surface side of a roofing material (39). An adhesive layer (38) for attaching the antenna body (37) to the roof material (39) is provided between the (37) and the roof material (39) so as to surround the outer periphery of the antenna element (11). Water passage (47) is provided in the outer periphery between the roof material (39) and the antenna body (37).
The planar antenna device for reception, wherein the adhesive material layer (38) is spaced inwardly from the outer peripheral edge of the antenna body (37) so as to form the. 3. The adhesive layer (38) has a lower side portion (4) along the lower end edges of the antenna body (37) and the roof material (39).
1), a pair of side portions (42) along side edges of the antenna body (37) and the roof material (39), and the antenna body (3
7) and the upper side (43) along the upper edge of the roofing material (39)
3. A pair of inclined side portions (44) inclined upward outward are provided at both ends of the lower side portion (41) of the adhesive layer (38). The planar antenna device for reception as described in 1.