JPS61155836U - - Google Patents
Info
- Publication number
- JPS61155836U JPS61155836U JP3891185U JP3891185U JPS61155836U JP S61155836 U JPS61155836 U JP S61155836U JP 3891185 U JP3891185 U JP 3891185U JP 3891185 U JP3891185 U JP 3891185U JP S61155836 U JPS61155836 U JP S61155836U
- Authority
- JP
- Japan
- Prior art keywords
- light source
- photocell
- fan motor
- optical system
- optical path
- 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
- 238000001816 cooling Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
Description
第１図は本考案を透過式ＯＨＰに適用した場合
の一実施例を示す概略図、第２図は本冷却装置の
回路図、第３図は本考案の反射式ＯＨＰに適用し
た場合の一実施例を示す概略図、第４図は本考案
をスライド映写機に適用した場合の一実施例を示
す概略図である。
１……本体、２……光源、３……ステージ、４
……フレネルレンズ、５……ヘツド、７……映写
レンズ、９，９′……フアンモータ、１０……フ
オトセル、１１……防熱フイルタ。
Fig. 1 is a schematic diagram showing an embodiment of the present invention applied to a transmission type OHP, Fig. 2 is a circuit diagram of the present cooling device, and Fig. 3 is an example of the case where the present invention is applied to a reflective type OHP. Schematic diagram showing an embodiment. FIG. 4 is a schematic diagram showing an embodiment in which the present invention is applied to a slide projector. 1...Main body, 2...Light source, 3...Stage, 4
... Fresnel lens, 5 ... head, 7 ... projection lens, 9, 9' ... fan motor, 10 ... photo cell, 11 ... heat shielding filter.
Claims (1)
備えた映写機において、該光学系の光路近傍に上
記光源に対面して配設されたフオトセルと、該フ
オトセルに接続されたフアンモータとを備え、上
記フオトセルが上記光源および／または光路から
の漏洩光及び反射光を受光することにより上記フ
アンモータを駆動せしめるようにしたことを特徴
とする冷却装置。 A projector equipped with an optical system including a light source, a condensing lens, and a projection lens, comprising a photocell disposed near the optical path of the optical system and facing the light source, and a fan motor connected to the photocell, A cooling device characterized in that the photocell drives the fan motor by receiving leaked light and reflected light from the light source and/or the optical path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3891185U JPS61155836U (en) | 1985-03-20 | 1985-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3891185U JPS61155836U (en) | 1985-03-20 | 1985-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61155836U true JPS61155836U (en) | 1986-09-27 |
Family
ID=30546361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3891185U Pending JPS61155836U (en) | 1985-03-20 | 1985-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61155836U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410937U (en) * | 1977-06-24 | 1979-01-24 |
-
1985
- 1985-03-20 JP JP3891185U patent/JPS61155836U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5410937U (en) * | 1977-06-24 | 1979-01-24 |
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