JPS6259401A - Antenna with snow melting device - Google Patents

Antenna with snow melting device

Info

Publication number
JPS6259401A
JPS6259401A JP19996485A JP19996485A JPS6259401A JP S6259401 A JPS6259401 A JP S6259401A JP 19996485 A JP19996485 A JP 19996485A JP 19996485 A JP19996485 A JP 19996485A JP S6259401 A JPS6259401 A JP S6259401A
Authority
JP
Japan
Prior art keywords
snow
heater
hood
antenna
reflection mirror
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19996485A
Other languages
Japanese (ja)
Inventor
Nobushige Tsukada
束田 陳重
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP19996485A priority Critical patent/JPS6259401A/en
Publication of JPS6259401A publication Critical patent/JPS6259401A/en
Pending legal-status Critical Current

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  • Details Of Aerials (AREA)

Abstract

PURPOSE:To prevent sticking of snow on a reflection mirror and to melt the sticking snow by fitting a hood around the reflection mirror of an antenna and arranging a heater radiating and heating the reflection mirror to the hood. CONSTITUTION:The nearly cylindrical hood 3 is fitted incorporatedly so as to be projected in front of the parabolic reflection mirror 1. The heater 4 is arranged to several parts in the inner face of the hood 3. The heater 4 consists of an infrared rays heater 5 and a reflect plate 6 reflecting a far infrared-ray irradiated to the center of the reflection mirror 1. Thus, the direct sticking of snow on the inner face of the reflection mirror 1 is suppressed by the hood and the sticking snow is molten by the heater 4 through the constitution above.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は融雪機能を有するアンテナに関し、特に融雪効
果の向上とともに放射特性や指向特性の改善を図った融
雪装置付アンテナに関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an antenna having a snow melting function, and more particularly to an antenna with a snow melting device that improves the snow melting effect as well as the radiation characteristics and directivity characteristics.

〔従来の技術〕[Conventional technology]

一般に寒冷地に設置される通信用アンテナは、反射面や
その近傍に積もった雪による放射特性等の電気的な特性
の劣化を防止するために、アンテナに付着した雪を融解
させるための融解雪装置を付設させている。従来、この
種の装置を有するアンテナ、例えばパラボラアンテナで
は、反射鏡の裏側にヒータを配設したものが多く用いら
れ、このヒータの熱を利用して反射鏡に付着した雪を融
かしている。また、他のアンテナとしては反射鏡の前面
を覆うレドームを設けたものがあり、レドームによって
反射鏡の反射面への雪の付着を防止している。
Generally speaking, communication antennas installed in cold regions are equipped with melting snow to melt the snow that has adhered to the antenna in order to prevent deterioration of electrical characteristics such as radiation characteristics due to snow that has accumulated on or near the reflecting surface. Equipment is attached. Conventionally, antennas with this type of device, such as parabolic antennas, often have a heater installed on the back side of the reflector, and the heat of this heater is used to melt the snow that has adhered to the reflector. There is. Other antennas include those that are provided with a radome that covers the front surface of the reflector, and the radome prevents snow from adhering to the reflective surface of the reflector.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来のアンテナにおいて、反射鏡の裏面にヒー
タを付設した構造のものでは、ヒータの熱によって反射
鏡を直接加熱させるために反射鏡が熱変形され易く、こ
の変形によって鏡面精度が劣化され電波の放射特性が劣
化され易い。また、ヒータを反射鏡の裏面に付設させる
ために特殊な部品や取り付は構造を用いる必要があり、
しかも反射鏡裏面が特殊な構成のアンテナではヒータの
取り付けが困難になり、更にヒータの交換も容易でない
等の問題が生じている。
In the above-mentioned conventional antennas, when a heater is attached to the back of the reflector, the reflector is easily heated due to the heat of the heater, which causes the reflector to be thermally deformed.This deformation deteriorates the precision of the mirror surface and prevents radio waves. radiation characteristics are likely to deteriorate. Additionally, in order to attach the heater to the back of the reflector, special parts and mounting structures must be used.
Moreover, with an antenna having a special configuration on the back surface of the reflector, it becomes difficult to attach a heater, and furthermore, there are problems such as it is not easy to replace the heater.

一方、レドームを付設したアンテナでは、レドーム自身
からの反射波やレドームに付着した雪や氷等による反射
により、アンテナ利得が低下されかつ放射特性が劣化さ
れる問題がある。
On the other hand, an antenna equipped with a radome has a problem in that the antenna gain is reduced and the radiation characteristics are deteriorated due to reflected waves from the radome itself and reflections from snow, ice, etc. attached to the radome.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の融雪装置付アンテナは、雪の付着を防止すると
ともに付着した雪を融解するのはもとより、アンテナの
放射特性及び指向特性の劣化を防止するために、反射鏡
の周囲にフードを取着し、かつこのフードに少なくとも
反射鏡面を輻射加熱するヒータを配設した構成としてい
る。
The antenna with a snow melting device of the present invention has a hood attached around the reflector in order to not only prevent snow from accreting and melting the accumulated snow, but also to prevent deterioration of the radiation characteristics and directivity characteristics of the antenna. Moreover, this hood is provided with a heater for radiant heating at least the reflective mirror surface.

〔実施例〕〔Example〕

次に、本発明を図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第1図は本発明の融雪装置付アンテナの一実施例の正面
図、第2図はそのAA線断面図であり、ここでは本発明
をパラボラ型アンテナに適用した実施例を示している。
FIG. 1 is a front view of an embodiment of an antenna with a snow melting device according to the present invention, and FIG. 2 is a cross-sectional view taken along the line AA, showing an embodiment in which the present invention is applied to a parabolic antenna.

図示のように回転対称形の放物面状に構成したパラボラ
反射鏡1は、図外のアンテナ支持部により、□、!Ef
la”i’お9、。。2.5□つウニ11の内面中央位
置には焦点位置にまで突出した一次放射器2を固着して
いる。そして、このパラボラ反射鏡1の周囲には、下部
を除いた周側部乃至周上部に亘る範囲には反射鏡1の前
方に突出するよ     □う、、□工や、え、−53
や−オ、1、い   16、、Jよ、。07−)’3(
7)□、4.1カ。6ol□配分した数箇所(本例では
5箇所)に夫々ヒータ4を配設している・この5−夕4
は・遠赤外線を     1射出する直管状の赤外ヒー
タ線5と、この赤外ヒータ線5の背後にあって射出され
る遠赤外線を反!+111O1*kJJt77i射*−
t)IE射+& 6 a?+ll      。
As shown in the figure, the parabolic reflector 1 configured in a rotationally symmetrical parabolic shape is supported by an antenna support portion (not shown), □, ! Ef
A primary radiator 2 that protrudes to the focal point is fixed at the center of the inner surface of the 2.5□ sea urchin 11. Around this parabolic reflector 1, It protrudes in front of the reflector 1 in the range from the circumferential side part to the circumferential upper part excluding the lower part.
Ya-oh, 1, 16,, J. 07-)'3(
7) □, 4.1 Ka. Heater 4 is installed at each of the several distributed locations (5 locations in this example).
・There is a straight infrared heater wire 5 that emits far infrared rays, and there is a part behind this infrared heater wire 5 that emits far infrared rays! +111O1*kJJt77i shot*-
t) IE shooting + & 6 a? +ll.

成しており、さらにそのブラケット7による取り   
   1□ 付は角度を若干傾斜させることにより遠赤外線を   
   1□ 前記パラボラ反射鏡lの内面に向けて射出させる   
  1ように構成している。            
      :、えヵ、71、。。工4.より27.7
、うようヮよ   :鏡1″周側部乃至周1部ゞ取着藝
7−)’36結     iっで反射鏡1の内面に直接
雪が付着することが抑止でき、また雪が付着した場合に
もフード3の内面に設けた複数個のヒータ4によって加
熱されて融雪させる。この時、ヒータ4は傾斜状態に取
着しているために遠赤外線を反射鏡l内面に有効に照射
でき、高い効率で反射鏡1の内面や一次放出器2を輻射
加熱し、これらに付着した雪を溶解できる。また、この
際加熱には遠赤外線を利用し、かつ輻射熱によって緩や
かに加熱しているので反射鏡面を過度に加熱することは
なく、反射鏡面の熱変形を防止できる。更に、これらヒ
ータ4はフード3の内面にブラケット7を用いて取り付
けているので、その取着作業はもとよりヒータ交換作業
を容易に行うことができる。
The bracket 7 is also used for removal.
1□ By slightly tilting the angle, far infrared rays can be emitted.
1□ Inject toward the inner surface of the parabolic reflector l
It is configured as follows.
:, Eka, 71,. . Engineering 4. From 27.7
, it is possible to prevent snow from directly adhering to the inner surface of the reflecting mirror 1, and also to prevent snow from adhering directly to the inner surface of the reflecting mirror 1. The snow is melted by being heated by a plurality of heaters 4 provided on the inner surface of the hood 3.At this time, since the heaters 4 are installed in an inclined state, they can effectively irradiate far-infrared rays onto the inner surface of the reflector l. The inner surface of the reflector 1 and the primary emitter 2 can be efficiently radiated and heated to melt snow adhering to them.Furthermore, far-infrared rays are used for heating, and since the heating is done slowly by radiant heat, there is no reflection. It is possible to prevent thermal deformation of the reflective mirror surface without overheating the mirror surface.Furthermore, since these heaters 4 are attached to the inner surface of the hood 3 using brackets 7, not only the installation work but also the heater replacement work is easy. It can be done easily.

これにより、パラボラ反射鏡1における雪の付着を防止
するとともに反射鏡の変形を防止でき、しかも反射鏡の
前面には放射特性を劣化させるようなものが存在してい
ないので、寒冷地に設置したアンテナの放射特性や指向
特性を良好に維持することができる。併せて、反射鏡1
の周囲に突出したフード3によって広角度の指向特性を
改善することもできる。
This prevents snow from adhering to the parabolic reflector 1 and prevents the reflector from deforming.Furthermore, since there is nothing in front of the reflector that would degrade the radiation characteristics, it can be installed in cold regions. It is possible to maintain good radiation characteristics and directivity characteristics of the antenna. In addition, reflecting mirror 1
Wide-angle directivity characteristics can also be improved by the hood 3 protruding around the periphery.

6・7−1″3′版射It 1 (7)J’ilT″3
″G9J″:欠t、NTI、゛4(7)?’、7−ド内
9雪が積も6託力゛“1いのは言うまでもない。
6.7-1″3′ version It 1 (7) J’ilT″3
``G9J'': Missing, NTI, ゛4(7)? It goes without saying that even though there was snow on the ground, there was still a lot of snow on the ground.

ここで、ヒータ4は図示のように5個である必要はなく
、雪の付着環境等に応じて適宜変更するッ+om=+え
や、1□□第4.:、!:t+?。6゜、9、  )こ
とができる、また、ヒータ4は遠赤外線ヒータ7−ド。
Here, the number of heaters 4 does not need to be five as shown in the figure, and may be changed as appropriate depending on the snow adhesion environment, etc. :,! :t+? . 6°, 9, ), and the heater 4 is a far infrared heater 7.

形状は図示。も、)工限定されるも、)7は     
Iない。また、前記実施例では回転対称形のパラポ  
   [う反射鏡を有するアンテナに適用しているが、
反     )射鏡はパラボラ曲面に限られるものでは
なく、また回転対称でないオフセット鏡面においても同
様に適用できる。
Shape shown. Also,) is limited to engineering, but)7 is
I don't have one. In addition, in the above embodiment, a rotationally symmetrical parapod
[This is applied to antennas with reflectors, but
Reflection mirrors are not limited to parabolic curved surfaces, and can also be applied to offset mirror surfaces that are not rotationally symmetrical.

〔発明の効果〕〔Effect of the invention〕

ILI″ml!′ltJ:、に5kmtl−Q”L*゛
7 yf3−(DFi、M    。
ILI″ml!′ltJ:, 5kmtl-Q”L*゛7yf3-(DFi, M.

鏡の周囲にフードを取着し、かつこのフードに少   
  ″<8反射鏡面を輻射加熱す6″−夕を配設5  
   [た構成としているので、フードによって反射鏡
における雪の付着を防止するとともに付着した雪を輻射
加熱形のヒータで融解することができ、これにより反射
鏡の変形を防止する等して、アンテナの放射特性の劣化
を防止できる。また、反射鏡の周囲に設けたフードによ
って広角度の指向特性を良好にすることもできる。
Attach a hood around the mirror and attach a small
``<8 Radiant heating of reflective mirror surface 6'' - evening arrangement 5
[With this structure, the hood prevents snow from adhering to the reflector, and the radiant heater can melt the snow, which prevents deformation of the reflector and improves antenna performance. Deterioration of radiation characteristics can be prevented. Further, a hood provided around the reflecting mirror can improve the directivity characteristics over a wide angle.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例の正面図、第2図は第1図の
AA線断面図である。 1・・・パラボラ反射鏡、2・・・−次放射器、3・・
・フード、4・・・ヒータ、5・・・赤外ヒータ線、6
・・・反射板、7・・・ブラケット。 第1図 −I
FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA in FIG. 1. 1... Parabolic reflector, 2... -order radiator, 3...
・Hood, 4... Heater, 5... Infrared heater wire, 6
... Reflector, 7... Bracket. Figure 1-I

Claims (1)

【特許請求の範囲】 1、反射鏡を有するアンテナにおいて、この反射鏡の周
囲にフードを取着し、かつこのフードには少なくとも前
記反射鏡の表面を輻射加熱するヒータを配設したことを
特徴とする融雪装置付アンテナ。 2、フードは略円形をした反射鏡の周側部乃至周上部に
亘って配設し、かつ反射鏡の前方に突出するように構成
してなる特許請求の範囲第1項記載の融雪装置付アンテ
ナ。
[Claims] 1. An antenna having a reflecting mirror, characterized in that a hood is attached around the reflecting mirror, and a heater for radiant heating at least the surface of the reflecting mirror is disposed in the hood. Antenna with snow melting device. 2. The snow melting device according to claim 1, wherein the hood is disposed over the circumferential side part to the circumferential upper part of the substantially circular reflecting mirror, and is configured to protrude in front of the reflecting mirror. antenna.
JP19996485A 1985-09-09 1985-09-09 Antenna with snow melting device Pending JPS6259401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19996485A JPS6259401A (en) 1985-09-09 1985-09-09 Antenna with snow melting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19996485A JPS6259401A (en) 1985-09-09 1985-09-09 Antenna with snow melting device

Publications (1)

Publication Number Publication Date
JPS6259401A true JPS6259401A (en) 1987-03-16

Family

ID=16416529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19996485A Pending JPS6259401A (en) 1985-09-09 1985-09-09 Antenna with snow melting device

Country Status (1)

Country Link
JP (1) JPS6259401A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0287315U (en) * 1988-12-23 1990-07-11
JP2021085840A (en) * 2019-11-29 2021-06-03 京セラ株式会社 On-vehicle radar device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0287315U (en) * 1988-12-23 1990-07-11
JP2021085840A (en) * 2019-11-29 2021-06-03 京セラ株式会社 On-vehicle radar device

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