JPH0185722U

JPH0185722U -

Info

Publication number: JPH0185722U
Application number: JP17974987U
Authority: JP
Priority date: 1987-11-27
Filing date: 1987-11-27
Publication date: 1989-06-07

Description

[Brief explanation of the drawing]

第１図は本考案のオーバヘツドプロジエクタ（
ＯＨＰ装置）のランプハウスの角度調節機構の概
略図、第２図はランプハウスのレベル調整部の斜
視図、第３図はねじ式角度調整部の斜視図、第４
図はランプハウスの角度適正状態を示す図、第５
図はランプハウスの角度ズレの状態を示す図、第
６図はランプハウス回転機構の一例を示す概略図
、第７図は同回転機構の斜視図、第８図はランプ
ハウス回転機構の他の例の概略図、第９図は同回
転機構の斜視図、第１０図は従来のＯＨＰ装置の
全体概略図、第１１図はランプハウスを使用位置
（投影位置）へ回転した時の状態を示す図、第１
２図はランプハウスを折りたたんだ状態を示す図
、第１３図は従来のランプハウスの回転機構の一
例を示す図である。これらの図において、１０はＯＨＰ装置の本体
、１１は原稿面、１２はフレネルレンズ、１３は
ミラー、２０はアーム、２１はアーム回転軸、３
０はランプハウス、３１はランプハウス回転軸、
３１ａはカム部、３１ｃはラチエツト部、３２は
光源（ハロゲンランプ）、３６はツバ、４０はス
クリーン、３３はミラー、３４は投影用レンズ、
３５は投影用ミラー、４５は角度調整用ストツパ
、４６はストツパガイド、４７はストツパ、４８
はばね、５１はつめ、５２はつめ回転軸、５３は
解除レバー、５４は板ばね、６１は上部モールド
ケース、６２は下部モールドケース、６３は板金
筐体、６４は角度調整部、６５は角度調節ねじ、
６６はロツクナツト、７０は重り、７１は糸、７
２は引つ掛け部材、７６は調整片である。 Figure 1 shows the overhead projector of the present invention (
A schematic diagram of the angle adjustment mechanism of the lamp house of an OHP device), Fig. 2 is a perspective view of the level adjustment part of the lamp house, Fig. 3 is a perspective view of the screw type angle adjustment part, Fig. 4
Figure 5 shows the proper angle of the lamp house.
6 is a schematic diagram showing an example of the lamp house rotation mechanism, FIG. 7 is a perspective view of the same rotation mechanism, and FIG. 8 is a diagram showing another example of the lamp house rotation mechanism. A schematic diagram of the example, Figure 9 is a perspective view of the same rotation mechanism, Figure 10 is an overall schematic diagram of a conventional OHP device, and Figure 11 shows the state when the lamp house is rotated to the use position (projection position). Figure, 1st
FIG. 2 is a view showing the lamp house in a folded state, and FIG. 13 is a view showing an example of a conventional lamp house rotation mechanism. In these figures, 10 is the main body of the OHP device, 11 is the original surface, 12 is a Fresnel lens, 13 is a mirror, 20 is an arm, 21 is an arm rotation axis, 3
0 is the lamp house, 31 is the lamp house rotation axis,
31a is a cam part, 31c is a ratchet part, 32 is a light source (halogen lamp), 36 is a collar, 40 is a screen, 33 is a mirror, 34 is a projection lens,
35 is a projection mirror, 45 is a stopper for angle adjustment, 46 is a stopper guide, 47 is a stopper, 48
51 is a pawl, 52 is a pawl rotation shaft, 53 is a release lever, 54 is a leaf spring, 61 is an upper molded case, 62 is a lower molded case, 63 is a sheet metal casing, 64 is an angle adjustment part, 65 is an angle adjustment screw,
66 is a lock nut, 70 is a weight, 71 is a thread, 7
2 is a hook member, and 76 is an adjustment piece.

Claims

[Claims for Utility Model Registration] A main body 10, a foldable arm 20 extending from the main body, and a foldable arm 20 that is rotatably mounted around a shaft 31 fixed to the free end of the arm and can be held at a predetermined angular position. The lamp house 30 is configured to irradiate light from a light source 32 in the lamp house onto the document surface 11 on the main body via optical means, and to project the light onto a screen 40 or the like via optical means. The overhead projector includes a stopper 45 fixed to the shaft 31, an adjustment screw 65 attached to the lamp house 30 so as to be able to come into contact with the stopper, and a hook 72 with a weight 70 attached to one end and hooked to the other end. A jig made of the formed thread 71;
Jig holding means 74, 75 provided in the lamp house for removably holding the hook part of the jig and allowing the weight to hang vertically downward; and a reference piece 76 provided below the holding means. A lamp house angle adjustment mechanism is provided.