JPH0453234U - - Google Patents
Info
- Publication number
- JPH0453234U JPH0453234U JP9488090U JP9488090U JPH0453234U JP H0453234 U JPH0453234 U JP H0453234U JP 9488090 U JP9488090 U JP 9488090U JP 9488090 U JP9488090 U JP 9488090U JP H0453234 U JPH0453234 U JP H0453234U
- Authority
- JP
- Japan
- Prior art keywords
- power
- original
- glass surface
- power supply
- circuit
- 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
Links
- 239000011521 glass Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図は本考案の一実施例を説明する構成図で
ある。
１……電源回路、２……原稿を載せる為のガラ
ス面、３……原稿を投写する為の電球、４……原
稿を投写する為の反射鏡、５……ガラス面の原稿
を検知するセンサー回路、６……供給電源のオン
／オフを制御する制御回路、７……供給電源をオ
ン／オフする為のリレー。
FIG. 1 is a block diagram illustrating an embodiment of the present invention. 1...Power circuit, 2...Glass surface for placing the original, 3...Light bulb for projecting the original, 4...Reflector for projecting the original, 5...Detecting the original on the glass surface Sensor circuit, 6... Control circuit for controlling on/off of the power supply, 7... Relay for turning on/off the power supply.
Claims (1)
為のガラス面と、前記原稿を投写する為の電球及
び反射鏡と、電源オン／オフ用のスイツチとから
成るオーバーヘツドプロジエクターに於いて、前
記ガラス面上の前記原稿の有無を検知するセンサ
ー回路と、該センサー回路からの信号に従つて前
記供給電源のオン／オフを制御する制御回路とを
有することを特徴とする節電型オーバーヘツドプ
ロジエクター。 In an overhead projector consisting of a power supply circuit for supplying power, a glass surface for placing an original, a light bulb and a reflector for projecting the original, and a power on/off switch, A power-saving overhead project comprising: a sensor circuit that detects the presence or absence of the document on the glass surface; and a control circuit that controls on/off of the power supply according to a signal from the sensor circuit. Ector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9488090U JPH0453234U (en) | 1990-09-10 | 1990-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9488090U JPH0453234U (en) | 1990-09-10 | 1990-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0453234U true JPH0453234U (en) | 1992-05-07 |
Family
ID=31833156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9488090U Pending JPH0453234U (en) | 1990-09-10 | 1990-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0453234U (en) |
-
1990
- 1990-09-10 JP JP9488090U patent/JPH0453234U/ja active Pending