【図面の簡単な説明】[Brief explanation of drawings]
第１図は本考案の全体の概要を示す斜視図、第
２図はパラボラ反射鏡の裏面に二重の円周リブを
設けた縦断面図、第３図はパラボラ反射鏡の裏面
に三重の円周リブを設けた縦断面図、第４図はパ
ラボラ反射鏡の裏面に三重の円周リブを設け、最
外周の円周リブと鏡面部との交差部分を円弧状に
形成し、内側に行くにしたがつて円周リブを低く
した例を示した縦断面図、第５図はパラボラ反射
鏡の外周より若干内側に入つたところから三重の
円周リブを設けた例の縦断断面図、第６図は三重
の円周リブを設けたパラボラ反射鏡にレドームを
取付けた状態を示す要部の縦断面図、第７図はパ
ラボラ反射鏡にレドームを装着した全体の概要を
示す斜視図、第８図は二重の円周リブに飾りゴム
を装着した状態を示す縦断面図、第９図は三重の
円周リブに飾りゴムを装着した状態を示す縦断面
図、第１０図は従来のパラボラアンテナの全体の
概要を正面側から示す斜視図、第１１図は第１０
図のパラボラアンテナを背面側から見た状態を示
す斜視図、第１２図は従来のパラボラアンテナの
円周リブを説明する縦断面図、第１３図は厚肉の
円周リブとした場合の縦断面図、第１４図は従来
のパラボラ反射鏡に飾りゴムを装着した状態の縦
断面図である。
１……パラボラ反射鏡、４，５，６，８，９，
１０，１１，１２，１３，１４，１５，１６，１
７，１８，２２，２３，２４，３１，３２，３４
，３５，３６……円周リブ。
Figure 1 is a perspective view showing the overall outline of the present invention, Figure 2 is a vertical cross-sectional view of the back side of the parabolic reflector with double circumferential ribs, and Figure 3 is the back side of the parabolic reflector with triple ribs. Fig. 4 is a vertical cross-sectional view of a parabolic reflector with triple circumferential ribs provided on the back surface, and the intersection of the outermost circumferential rib and the mirror surface part is formed into an arc shape, and the inside A vertical cross-sectional view showing an example in which the circumferential ribs are lowered as the distance increases, and FIG. Fig. 6 is a longitudinal cross-sectional view of the main part showing a state in which a radome is attached to a parabolic reflector provided with triple circumferential ribs, Fig. 7 is a perspective view showing an overview of the radome attached to a parabolic reflector, Fig. 8 is a longitudinal cross-sectional view showing a state in which decorative rubber is attached to a double circumferential rib, Fig. 9 is a longitudinal cross-sectional view showing a state in which a decorative rubber is attached to a triple circumferential rib, and Fig. 10 is a conventional Figure 11 is a perspective view showing the overall outline of the parabolic antenna from the front side.
A perspective view showing the parabolic antenna shown in the figure as seen from the back side, Fig. 12 is a vertical cross-sectional view illustrating the circumferential ribs of a conventional parabolic antenna, and Fig. 13 is a longitudinal cross-sectional view when thick circumferential ribs are used. The top view and FIG. 14 are longitudinal cross-sectional views of a conventional parabolic reflector with decorative rubber attached. 1... Parabolic reflector, 4, 5, 6, 8, 9,
10, 11, 12, 13, 14, 15, 16, 1
7, 18, 22, 23, 24, 31, 32, 34
, 35, 36... circumferential rib.