【図面の簡単な説明】[Brief explanation of the drawing] 第１図及び第２図は本考案の第１実施例であり
、第１図はその要部斜視略図、第２図は第１図の
―矢視断面図、第３図は本考案の第２実施例
の要部斜視略図、第４図はその―矢視断面図
、第５図〜第７図は本考案の第３〜第５実施例、
第８図は従来型熱交換器の要部平面図。 １……ルーバ、２……スリツト、３……前端縁
、４……基面、５……チユーブ、６……空気流。 1 and 2 show a first embodiment of the present invention, FIG. 1 is a schematic perspective view of the main parts, FIG. 2 is a sectional view taken along the arrow - in FIG. 1, and FIG. A schematic perspective view of the main part of the second embodiment, FIG. 4 is a sectional view taken in the direction of the - arrow, and FIGS.
FIG. 8 is a plan view of the main parts of a conventional heat exchanger. 1... Louver, 2... Slit, 3... Front edge, 4... Base, 5... Tube, 6... Air flow.