JPH049032U - - Google Patents
Info
- Publication number
- JPH049032U JPH049032U JP4804690U JP4804690U JPH049032U JP H049032 U JPH049032 U JP H049032U JP 4804690 U JP4804690 U JP 4804690U JP 4804690 U JP4804690 U JP 4804690U JP H049032 U JPH049032 U JP H049032U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- housing
- blowing means
- overhead projector
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図および第２図は本考案によるオーバーヘ
ツドプロジエクタの第１実施例を示す断面図およ
び斜視図、第３図は本考案の第２実施例を示す断
面図、第４図ａ，ｂは光源および液晶パネルの温
度上昇および風量配分を示す特性図、第５図は本
考案の第３実施例を示す断面図、第６図および第
７図は従来装置の各例を示す斜視図、第８図は液
晶表示体の一例を示す斜視図である。
１……オーバーヘツドプロジエクタ、２……ハ
ウジング、４……光源、７……液晶パネル（液晶
表示体）、９……フアン（送風手段）、１２……
空隙、２０……ガイド部材、２３……調整板、３
２……排気口。
1 and 2 are sectional views and perspective views showing a first embodiment of an overhead projector according to the present invention, FIG. 3 is a sectional view showing a second embodiment of the present invention, and FIGS. 4 a and b. 5 is a sectional view showing the third embodiment of the present invention, and FIGS. 6 and 7 are perspective views showing examples of conventional devices. FIG. 8 is a perspective view showing an example of a liquid crystal display. DESCRIPTION OF SYMBOLS 1...Overhead projector, 2...Housing, 4...Light source, 7...Liquid crystal panel (liquid crystal display), 9...Fan (ventilation means), 12...
Gap, 20... Guide member, 23... Adjustment plate, 3
2...Exhaust port.
Claims (1)
表示体に照射し、液晶表示体の透過光によつて液
晶画像を投影するオーバーヘツドプロジエクタに
おいて、前記ハウジング内に空気流を生じさせる
送風手段と、この送風手段からの空気流を前記光
源と液晶表示体とに分割して供給するガイド部材
とを備えていることを特徴とするオーバーヘツド
プロジエクタ。 (2) 前記送風手段はハウジング内の空気を排気
することにより前記空気流を生成することを特徴
とする請求項第(1)項記載のオーバーヘツドプロ
ジエクタ。[Claims for Utility Model Registration] (1) In an overhead projector that projects a liquid crystal image by irradiating a liquid crystal display with light from a light source provided in a housing and transmitting light from the liquid crystal display, the housing 1. An overhead projector comprising: a blowing means for generating an airflow within the projector; and a guide member for dividing and supplying the airflow from the blowing means to the light source and the liquid crystal display. (2) The overhead projector according to claim 1, wherein the air blowing means generates the air flow by exhausting air within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4804690U JPH049032U (en) | 1990-05-08 | 1990-05-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4804690U JPH049032U (en) | 1990-05-08 | 1990-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH049032U true JPH049032U (en) | 1992-01-27 |
Family
ID=31564517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4804690U Pending JPH049032U (en) | 1990-05-08 | 1990-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH049032U (en) |
-
1990
- 1990-05-08 JP JP4804690U patent/JPH049032U/ja active Pending
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