JPH0157731U - - Google Patents

Info

Publication number
JPH0157731U
JPH0157731U JP15380087U JP15380087U JPH0157731U JP H0157731 U JPH0157731 U JP H0157731U JP 15380087 U JP15380087 U JP 15380087U JP 15380087 U JP15380087 U JP 15380087U JP H0157731 U JPH0157731 U JP H0157731U
Authority
JP
Japan
Prior art keywords
opening
closing lid
switch
physical projector
closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15380087U
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15380087U priority Critical patent/JPH0157731U/ja
Publication of JPH0157731U publication Critical patent/JPH0157731U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Description

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

第１図は、本案実物投影機の一実施例の外観図
を示したものである。第２図は、本案実物投影機
の回路構成図を示したものである。第３図は、第
２図に示す回路構成図における要部出力波形図を
示したものである。 １……実物投影機、２……ステージ面、４……
開閉蓋、５……スイツチ、６……投影ランプ、２
７……サイリスタ。 FIG. 1 shows an external view of an embodiment of the actual projector of the present invention. FIG. 2 shows a circuit diagram of the actual projector according to the present invention. FIG. 3 shows a main part output waveform diagram in the circuit configuration diagram shown in FIG. 2. 1... Actual projector, 2... Stage surface, 4...
Opening/closing lid, 5... Switch, 6... Projection lamp, 2
7...thyristor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 投影すべき資料を交換する際、開閉操作でき且
つ前記資料の投影時、資料自体をステージ面に押
圧する開閉蓋を有する実物投影機において該開閉
蓋の開閉操作に連繋してオン、オフするスイツチ
を設けると共に該スイツチによりサイリスタの導
通時間を制御し、投影ランプの輝度を前記開閉蓋
の開放中低減せしめることを特徴とする前記実物
投影機。 In a physical projector having an opening/closing lid that can be opened and closed when exchanging materials to be projected and which presses the material itself against the stage surface when projecting the material, a switch that is turned on and off in conjunction with the opening/closing operation of the opening/closing lid. The physical projector is characterized in that the switch controls the conduction time of the thyristor and reduces the brightness of the projection lamp while the opening/closing lid is open.
JP15380087U 1987-10-07 1987-10-07 Pending JPH0157731U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15380087U JPH0157731U (en) 1987-10-07 1987-10-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15380087U JPH0157731U (en) 1987-10-07 1987-10-07

Publications (1)

Publication Number Publication Date
JPH0157731U true JPH0157731U (en) 1989-04-11

Family

ID=31429959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15380087U Pending JPH0157731U (en) 1987-10-07 1987-10-07

Country Status (1)

Country Link
JP (1) JPH0157731U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116543B2 (en) * 1977-07-12 1986-05-01 Ntn Toyo Bearing Co Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6116543B2 (en) * 1977-07-12 1986-05-01 Ntn Toyo Bearing Co Ltd

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