JPH03125343U - - Google Patents

Description

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

第１図は本考案の一実施例を示す一部を切り欠
いた側面図、第２図はその斜視図、第３図は防護
カバーの開いた状態を示す斜視図、第４図は防護
カバーの閉じた状態を示す斜視図、第５図は従来
例を示す一部を切り欠いた側面図、第６図はその
斜視図である。 １……基台、２……フレネル板、３……透過原
稿、５……投影ヘツド部、８……光源、１１……
投影レンズ、１２……投影ミラー、１４……防護
カバー。 Fig. 1 is a partially cutaway side view showing an embodiment of the present invention, Fig. 2 is a perspective view thereof, Fig. 3 is a perspective view showing the protective cover in the open state, and Fig. 4 is the protective cover. FIG. 5 is a partially cutaway side view of a conventional example, and FIG. 6 is a perspective view thereof. DESCRIPTION OF SYMBOLS 1... Base, 2... Fresnel board, 3... Transparent original, 5... Projection head section, 8... Light source, 11...
Projection lens, 12... Projection mirror, 14... Protective cover.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 投影ヘツド部内の光源より出射された光をその
下方に位置する基台上に置かれた透過原稿に導き
、この透過原稿を透過しその裏面に位置するフレ
ネル板により反射され上方に向かう光を前記投影
ヘツド部内に導き投影レンズにより集光させ、こ
の集光された光を投影ミラーを介してスクリーン
上に照射することによつて前記透過原稿に記録さ
れた画像を拡大投影するオーバーヘツドプロジエ
クタにおいて、前記投影ミラーの周辺部にこれを
覆つた形でその投影ミラーの角度の変化に対応し
て追従する防護カバーを取付けたことを特徴とす
るオーバーヘツドプロジエクタ。 The light emitted from the light source in the projection head section is guided to a transparent original placed on a base located below, and the light that passes through this transparent original and is reflected by a Fresnel plate located on the back side of the original and goes upward is directed to the above. In an overhead projector for enlarging and projecting an image recorded on the transparent original by guiding light into a projection head and condensing it by a projection lens, and irradiating the condensed light onto a screen via a projection mirror. An overhead projector, characterized in that a protective cover is attached to the periphery of the projection mirror so as to cover it and follow changes in the angle of the projection mirror.