JPH0475635U

JPH0475635U -

Info

Publication number: JPH0475635U
Application number: JP11508390U
Authority: JP
Priority date: 1990-10-31
Filing date: 1990-10-31
Publication date: 1992-07-02

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係るオーバーヘツ
ドプロジエクタの概略斜視図、第２図は反射ミラ
ー付フレネルレンズを載置した基台の側断面図、
第３図は裏面から眺めた基台の斜視図、第４図は
裏面から眺めた基台の動作説明図、第５図は上記
基台を復帰させる復帰機構を示す動作説明図、第
６図は本考案の背景の一例である従来のオーバー
ヘツドプロジエクタの概略斜視図である。符号の説明、１……オーバーヘツドプロジエク
タ、３……光源部、５……基台、６……反射ミラ
ー付フレネルレンズ、７……軸、８……軸受、１
２……溝、１３……摺動部材、１４……本体上面
、１５……付勢部材、１７……ロツク部材、２５
……ワイヤ。 FIG. 1 is a schematic perspective view of an overhead projector according to an embodiment of the present invention, and FIG. 2 is a side sectional view of a base on which a Fresnel lens with a reflective mirror is mounted.
Fig. 3 is a perspective view of the base seen from the back side, Fig. 4 is an explanatory view of the operation of the base seen from the back side, Fig. 5 is an explanatory view of the operation showing the return mechanism for returning the base, and Fig. 6 1 is a schematic perspective view of a conventional overhead projector, which is an example of the background of the present invention. Explanation of symbols, 1...Overhead projector, 3...Light source section, 5...Base, 6...Fresnel lens with reflective mirror, 7...Shaft, 8...Bearing, 1
2...Groove, 13...Sliding member, 14...Top surface of main body, 15...Biasing member, 17...Lock member, 25
...Wire.

Claims

[Claim for Utility Model Registration] A substantially rectangular Fresnel lens with a reflective mirror is pivotally supported on the top surface of the main body so as to be rotatable within a predetermined angle range,
In an overhead projector in which a light source unit that is erected during use is foldably stored toward the main body, a bearing for rotatably supporting the main body;
a base having an arc-shaped groove concentric with the bearing and having a predetermined angle formed on the lower surface, and on the upper surface on which the Fresnel lens with a reflective mirror is placed; a sliding member slidably accommodated in the groove; so as to bias the base toward the storage position.
a biasing member having one end locked to the sliding member and the other end locked to the main body side; and a biasing member configured to lock the sliding member when the base is rotated by a predetermined angle , a locking member provided on the main body side, and one end of which is latched to the support arm of the light source section, and the other end of which is latched to the support arm of the light source section so as to release the sliding member from the latched state when the light source section is folded. 1. An overhead projector comprising a lock release member locked to a lock member.