AT128557B - Projector for reflected light with a fan to cool the opaque objects. - Google Patents
Projector for reflected light with a fan to cool the opaque objects.Info
- Publication number
- AT128557B AT128557B AT128557DA AT128557B AT 128557 B AT128557 B AT 128557B AT 128557D A AT128557D A AT 128557DA AT 128557 B AT128557 B AT 128557B
- Authority
- AT
- Austria
- Prior art keywords
- fan
- projector
- air duct
- cool
- opaque objects
- Prior art date
Links
- 238000001816 cooling Methods 0.000 claims 1
- 238000007664 blowing Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Projection Apparatus (AREA)
Description
<Desc/Clms Page number 1>
Bildwerfer für Auflicht mit Ventilator zur Kühlung der undurchsichtigen Objekte.
Es ist bekannt, dass bei Verwendung hoehwattiger Projektionslampen und insbesondere bei Verwendung mehrerer die Erwärmung der zu projizierenden undurchsichtigen Objekte verhältnismässig sehr gross ist.
Dieses Übel wird durch vorliegende Erfindung beseitigt. Mit Hilfe einer Gebläsevorriehtung oder eines Ventilators lässt man in schmalen Gängen, Kanälen die Luft in einem ununterbrochenen Strom an dem zu projizierenden Bild vorbeistreichen.
Vorliegende Zeichnung zeigt eine beispielsweise Ausführungsform des Erfindungsgegenstandes.
Um die ungünstige Erwärmung der episkopischen Bilder aufzuheben, wird z. B. mit Hilfe eines elektrischen Ventilators ununterbrochen ein Luftstrom saugend oder blasend durch einen schmalen Luftkanal vor das Projektionsfenster gebracht. Der Ventilator, der hier saugend durch den Luftkanal von unten her zu dem zu projizierenden Objekt ununterbrochen frische Luft bringt, ist in der Abdachung des Gehäuses eingebaut. Der Luftkanal vor dem Projektionsfenster ist entweder nach innen mit einer dünnen Glasplatte abgegrenzt oder ist mit dem Innenraum durch eine Öffnung in Verbindung. Der Ventilator kann auch sinngemäss am Boden des Gehäuses angebracht sein und blasend wirken.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Projector for reflected light with a fan to cool the opaque objects.
It is known that when using high wattage projection lamps and in particular when using several, the heating of the opaque objects to be projected is comparatively very great.
This evil is eliminated by the present invention. With the help of a blower device or a fan, the air is allowed to sweep past the image to be projected in narrow corridors or ducts in an uninterrupted stream.
The present drawing shows an exemplary embodiment of the subject matter of the invention.
To cancel the unfavorable warming of the episcopal images, z. B. with the help of an electric fan continuously sucking or blowing a stream of air through a narrow air duct in front of the projection window. The fan, which draws fresh air through the air duct from below to the object to be projected, is built into the roof of the housing. The air duct in front of the projection window is either delimited on the inside with a thin glass plate or is connected to the interior through an opening. The fan can also be attached analogously to the bottom of the housing and have a blowing effect.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT128557T | 1930-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT128557B true AT128557B (en) | 1932-06-10 |
Family
ID=3635697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT128557D AT128557B (en) | 1930-04-28 | 1930-04-28 | Projector for reflected light with a fan to cool the opaque objects. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT128557B (en) |
-
1930
- 1930-04-28 AT AT128557D patent/AT128557B/en active
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