AT125419B - Cooling device for projector. - Google Patents

Cooling device for projector.

Info

Publication number
AT125419B
AT125419B AT125419DA AT125419B AT 125419 B AT125419 B AT 125419B AT 125419D A AT125419D A AT 125419DA AT 125419 B AT125419 B AT 125419B
Authority
AT
Austria
Prior art keywords
cooling device
projector
chamber
lamp
housing
Prior art date
Application number
Other languages
German (de)
Inventor
Ludwig Pani
Original Assignee
Ludwig Pani
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 by Ludwig Pani filed Critical Ludwig Pani
Application granted granted Critical
Publication of AT125419B publication Critical patent/AT125419B/en

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/06Projectors or projection-type viewers; Accessories therefor affording only episcopic projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Die Erfindung betrifft eine Kühlvorrichtung für Bildwerfer mit einer Lichtquelle in einer besonderen, mit einem Fenster für das Austreten des   Liehtstrahlenbüsehels   ausgestatteten Kammer und besteht darin, dass die erhitzte Luft zwecks Kühlung des Objektes aus der Lampenkammer mechanisch abgesaugt wird. 



   Zweck der Erfindung ist, die Erhitzung des Bildes oder Objektes mit Sicherheit weitgehendst zu verhindern. 
 EMI1.2 
 zwei beispielsweisen   Ausführungsformen im Längsschnitt   dargestellt. 



   In einem Gehäuse 1 ist auf dessen Boden der Objektträger 2 für Auflicht untergebracht. Das Licht wird von einer Lampe 3 auf das Objekt geworfen und gelangt über einen Spiegel 4 durch ein Linsensystem nach aussen. Erfindungsgemäss ist der hintere Raum des Gehäuses, in welchem sieh die Lampe. 3 befindet, durch eine Wand   5   abgeteilt, so dass eine abgeschlossene Kammer 11 entsteht. In der Decke dieser Kammer befindet sich ein elektromotorisch angetriebener Ventilator 7. In der Wand 5 ist ein Glasfenster 6 eingebaut, welches dem von der Lampe 3 kommenden   Lichtstrahlenbüschel   den   Durehtritt   gestattet, die Wärme jedoch   zurückhält.   



   Während des Betriebes erwärmt sich unmittelbar und intensiv die die Lampe 3 umgebende Luft, welche jedoch   erfindungsgemäss abgeschlossen in   der Kammer 11 verbleibt und aus dieser rasch durch den Ventilator 7 abgesaugt wird. Es gelangt somit keine   praktisch merkbare, erwärmte Luftmenge   in den vorderen Teil des Gehäuses 1 oder auf das zu projizierende Objekt. Der Boden der Kammer 11 ist mit Jalousicklappen 8 ausgestattet, welche der nachgesaugten kalten Aussenluft den Eintritt ermöglichen. 



   Gemäss der   Ausführungsform   nach Fig. 2 ist die Zwischenwand 5 mit Durchbrechungen 9 versehen, so dass die vom Ventilator   nachgesaugte Luft. aus dem Gehäuseraum   entnommen wird, in welchem sich das Durchlichtobjekt befindet ; dadurch erfolgt eine weitergehende Kühlung des Objektes. Zwecks Eintrittes der Luft sind in der Nähe des Objektes   Öffnungen   10 in der Wandung des Gehäuses 1 vorgesehen. 



   PATENT-ANSPRÜCHE : 
 EMI1.3 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 
 EMI1.1
 



   The invention relates to a cooling device for projector with a light source in a special chamber equipped with a window for the exit of the light beam and consists in that the heated air is mechanically sucked out of the lamp chamber for the purpose of cooling the object.



   The purpose of the invention is to prevent the picture or object from heating up as far as possible.
 EMI1.2
 two exemplary embodiments shown in longitudinal section.



   In a housing 1, the slide 2 for incident light is accommodated on the bottom thereof. The light is thrown onto the object by a lamp 3 and reaches the outside via a mirror 4 through a lens system. According to the invention is the rear space of the housing in which you can see the lamp. 3 is located, divided by a wall 5, so that a closed chamber 11 is formed. In the ceiling of this chamber there is an electric motor driven fan 7. In the wall 5 a glass window 6 is installed, which allows the light beam coming from the lamp 3 to pass through, but retains the heat.



   During operation, the air surrounding the lamp 3 is heated immediately and intensively, but according to the invention it remains closed in the chamber 11 and is quickly sucked out of it by the fan 7. There is thus no practically noticeable, heated amount of air into the front part of the housing 1 or onto the object to be projected. The bottom of the chamber 11 is equipped with louvre flaps 8, which allow the cold outside air drawn in to enter.



   According to the embodiment according to FIG. 2, the partition 5 is provided with openings 9 so that the air drawn in by the fan. is removed from the housing space in which the transmitted light object is located; this results in further cooling of the object. In order for the air to enter, openings 10 are provided in the wall of the housing 1 in the vicinity of the object.



   PATENT CLAIMS:
 EMI1.3
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Kühlvorrichtung für Bildwerfer nach Anspruch 1, dadurch gekennzeichnet, dass die in die Lampenkammer (11) nachgesaugte Luft dem Objektraum durch Öffnungen (9) der Scheidewand (5) entnommen wird. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Cooling device for projector according to claim 1, characterized in that the air sucked into the lamp chamber (11) is taken from the object space through openings (9) in the partition (5). ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT125419D 1930-08-12 1930-08-12 Cooling device for projector. AT125419B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT125419T 1930-08-12

Publications (1)

Publication Number Publication Date
AT125419B true AT125419B (en) 1931-11-10

Family

ID=3634313

Family Applications (1)

Application Number Title Priority Date Filing Date
AT125419D AT125419B (en) 1930-08-12 1930-08-12 Cooling device for projector.

Country Status (1)

Country Link
AT (1) AT125419B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288811B (en) * 1958-09-20 1969-02-06 Bosch Elektronik Photokino Ventilation device for a projection lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1288811B (en) * 1958-09-20 1969-02-06 Bosch Elektronik Photokino Ventilation device for a projection lamp

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