DE4238731A1 - Dual projection device with central single light source - has housing panels defining parallel cooling channels for counter-flow cooling of light source - Google Patents

Dual projection device with central single light source - has housing panels defining parallel cooling channels for counter-flow cooling of light source

Info

Publication number
DE4238731A1
DE4238731A1 DE19924238731 DE4238731A DE4238731A1 DE 4238731 A1 DE4238731 A1 DE 4238731A1 DE 19924238731 DE19924238731 DE 19924238731 DE 4238731 A DE4238731 A DE 4238731A DE 4238731 A1 DE4238731 A1 DE 4238731A1
Authority
DE
Germany
Prior art keywords
light source
cooling
projection device
central light
counter
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.)
Withdrawn
Application number
DE19924238731
Other languages
German (de)
Inventor
Barbara Joerns
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19924238731 priority Critical patent/DE4238731A1/en
Publication of DE4238731A1 publication Critical patent/DE4238731A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2026—Gas discharge type light sources, e.g. arcs

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)

Abstract

The projection device has a rectangular housing coupling aluminium profiles, with a pair of in-line centre panels (9). The panels define two parallel cooling channels, between which the central light source (3) is located. Pref. a quadratic axial fan (4) is provided at each of the opposing outer ends of the cooling channels, the cooling flow directed inwards. The optical projection systems are pref. offset by 180 degrees.

Description

Für Dauerprojektion werden bisher meist Glas- bzw. Blechgobos eingesetzt. Mit begrenzter Leistung von ca. 150 Watt Metalldampflampen ist mit der Konstruktion von Barbara Jörns, Augsburg ("Projektor mit Metalldampf- oder ähnlicher Lampe", G 89 08 143.9) auch ohne zusätzlichen Wärmefilter farbige Dauerprojektion in Fotoqualität mit Farbfoliendias, Diapositiv-Film oder Overheadfolien möglich. Mit Glas- bzw. Blechgobos können nur scherenschnitt­ ähnliche schwarz-weiß oder gerasterte Projektionsbilder erzeugt werden. Farbe ist nur bedingt, durch zusätzliche Farbfilter oder ähnliche Hilfsmethoden möglich.Up to now, glass or sheet metal gobos have mostly been used for continuous projection. With a limited output of approx. 150 watts Metal vapor lamps is designed by Barbara Jörns, Augsburg ("projector with metal vapor or similar lamp ", G 89 08 143.9) even without additional heat filter, colored projection in photo quality with Color film slides, slide film or overhead films possible. With glass or sheet metal gobos you can only cut paper Similar black and white or rasterized projection images are generated. Color is only conditional, due to additional ones Color filters or similar auxiliary methods possible.

Die neue Konstruktion bzw. das neue Verfahren ermöglicht den Einsatz eines wesentlich stärkeren Leuchtmittels bei gleichzeitiger Verwendung von obigen Folienmedien als Projektionsvorlage. Zu einer zentrale Lichtquelle sind zwei optische Projektionssysteme zentrisch auf einer gemeinsamen Mittelachse angeordnet. Diese bilden somit eine Art optische Bank mit exakt 180 Grad entgegengesetzter Projektionsrichtung und bewirken einen Licht- (und damit auch Wärme-) austritt zu zwei Seiten. Gleichzeitig sorgen zwei Axialventilatoren für zwei parallele, in ihrer Richtung gegensätzliche Kühlluftströme. Diese Kühlluftströme verlaufen rechtwinklig zu den optischen Systemen, wobei der eine der beiden Luftströme die Linsen und Bildebene des einen optischen Systemes kühlt, der andere die des zweiten optischen Systems. Mit Leitblechen werden diese Kühlluftströme so verengt, daß im Bereich der Linsen und Bildebene jeweils eine höhere Strömungsgeschwindigkeit erreicht wird. Anschließend können sie durch die Rasterbleche - Lichtblenden nahezu ungehindert entweichen (siehe dazu auch Zeichnung "Kühlluftführung" Nr. D11-92-005). Durch die ausschließliche Verwendung von Aluminium mit großen Materialstärken bzw. Querschnitten wird die Wärmeableitung weiter optimiert.The new design and the new process enable the use of a much stronger illuminant simultaneous use of the above film media as a projection template. There are two to a central light source optical projection systems arranged centrally on a common central axis. These form a kind optical bench with exactly 180 degrees opposite projection direction and cause a light (and thus also Heat) exits on two sides. At the same time, two axial fans ensure two parallel ones in their direction opposite cooling air flows. These cooling air flows run at right angles to the optical systems, the one of the two air streams cools the lenses and image plane of one optical system, the other that of the second optical system. With baffles, these cooling air flows are narrowed so that in the area of the lenses and image plane a higher flow rate is achieved in each case. Then you can through the grid plates - The light shields escape almost unhindered (see also drawing "Cooling air duct" No. D11-92-005). Through the exclusive use of aluminum with large material thicknesses or cross sections, the Heat dissipation further optimized.

Diese Doppelprojektion aus einer gemeinsamen Lichtquelle in Verbindung mit einer äußerst effizienten Gegenstrom­ kühlung ermöglicht bei kompaktester Bauweise den Einsatz von Folienvorlagen bei der Dauerprojektion mit einem wesentlich stärkeren Leuchtmittel als bei bekannten Konstruktionen.This double projection from a common light source combined with an extremely efficient counter current With the most compact design, cooling enables the use of film templates for continuous projection with one much more powerful bulbs than known designs.

Die Wirtschaftlichkeit dieses Systems ist wesentlich höher, da durch Einsatz unterschiedlicher Brennweiten und Ablenksysteme praktisch fast die Leistung von zwei Einzelprojektoren erreicht werden kann. Die hohen Ersatz- bzw. Betriebskosten der Projektions-Leuchtmittel können dadurch praktisch auf die Hälfte reduziert werden.The economy of this system is much higher because of the use of different focal lengths and Deflection systems can practically achieve the performance of two individual projectors. The high replacement or The operating costs of the projection lamps can thus be reduced by almost half.

Ein weiterer Vorteil liegt in der geringen Wärmebelastung von Verkaufsräumen oder ähnl. beim Einsatz des Doppelprojektors für Werbe- oder Infozwecke.Another advantage is the low heat load on sales rooms or similar. when using the Double projector for advertising or information purposes.

Bezugszeichenliste zu den Zeichnungen vom 09. 11. 1992List of reference symbols for the drawings dated November 11, 1992

 1 Projektorgehäuse aus Aluprofil
 2 Leuchtmittelfassung
 3 Leuchtmittel-Entladungslampe
 4 Axialventilator
 5 Asphärenlinse
 6 Plankonvexlinse
 7 Bildebene
 8 Linsenhalter aus Alu (Kondensorgehäuse)
 9 Kühlluft-Leitblech
10 Gewindestange für Deckenmontage
11 Zylindrischer Objektivtubus mit Wechselflansch
12 Projektionsablenkung über Spiegeleinheiten
13 Objektiv, verschieb- und drehbar
14 Zündgerät, Kondensator, Ballast
15 Rasterblech-Lichtblende
16 Alukonstruktionsprofil 1 projector housing made of aluminum profile
2 bulb holder
3 illuminant discharge lamp
4 axial fan
5 aspherical lens
6 plano-convex lens
7 image plane
8 lens holders made of aluminum (condenser housing)
9 Cooling air baffle
10 threaded rod for ceiling mounting
11 Cylindrical lens barrel with interchangeable flange
12 Projection deflection via mirror units
13 lens, slidable and rotatable
14 ignitor, capacitor, ballast
15 grid plate light shield
16 aluminum construction profile

Claims (5)

1. Doppelprojektionsgerät mit zentraler Lichtquelle und Gegenstromkühlung dadurch gekennzeichnet, daß in einem rechteckigen Alugehäuse durch zwei in einer Linie angeordnete, mittlere Leitbleche zwei parallele Kühlkanäle gebildet werden und sich zwischen den Leitblechen im räumlichen Zentrum des Gehäuses eine zentrale Lichtquelle befindet.1. Double projection device with a central light source and counterflow cooling, characterized in that two parallel cooling channels are formed in a rectangular aluminum housing by two central baffles arranged in a line and a central light source is located between the baffles in the spatial center of the housing. 2. Doppelprojektionsgerät mit zentraler Lichtquelle und Gegenstromkühlung nach Anspruch 1, dadurch gekennzeichnet, daß an je einem gegenüberliegenden äußeren Ende jedes Kühlkanals ein quadratischer Axialventilator in Richtung Gehäuseinneres blasend angeordnet ist.2. Double projection device with central light source and counter-current cooling Claim 1 characterized, that a square axial fan in each at an opposite outer end of each cooling channel Is arranged blowing inside the housing. 3. Doppelprojektionsgerät mit zentraler Lichtquelle und Gegenstromkühlung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß sich die optische Lichtachse der beiden Projektionssysteme auf der gleichen Geraden, die Projektionsrichtung jedoch exakt um 180° versetzt befindet.3. Double projection device with central light source and counter-current cooling Claims 1 and 2, characterized, that the optical light axis of the two projection systems is on the same straight line, the projection direction but is exactly offset by 180 °. 4. Doppelprojektionsgerät mit zentraler Lichtquelle und Gegenstromkühlung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die gemeinsame optische Lichtachse der sich gegenüberliegenden Projektionseinheiten zu den Kühlluftkanälen um 90° versetzt angeordnet ist.4. Double projection device with central light source and counterflow cooling Claims 1 to 3, characterized, that the common optical light axis of the opposing projection units to the Cooling air channels is arranged offset by 90 °. 5. Doppelprojektionsgerät mit zentraler Lichtquelle und Gegenstromkühlung nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß die Kühlluftkanäle im Bereich der in Kühlluftrichtung offenen Kondensorgehäuse verengt sind und am jeweiligen Luftaustritt wieder einen größeren Volumenquerschnitt haben.5. Double projection device with central light source and counterflow cooling Claims 1 to 4, characterized, that the cooling air channels are narrowed in the area of the condenser housing open in the cooling air direction and on each air outlet have a larger volume cross section.
DE19924238731 1992-11-17 1992-11-17 Dual projection device with central single light source - has housing panels defining parallel cooling channels for counter-flow cooling of light source Withdrawn DE4238731A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924238731 DE4238731A1 (en) 1992-11-17 1992-11-17 Dual projection device with central single light source - has housing panels defining parallel cooling channels for counter-flow cooling of light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924238731 DE4238731A1 (en) 1992-11-17 1992-11-17 Dual projection device with central single light source - has housing panels defining parallel cooling channels for counter-flow cooling of light source

Publications (1)

Publication Number Publication Date
DE4238731A1 true DE4238731A1 (en) 1994-05-19

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ID=6473067

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924238731 Withdrawn DE4238731A1 (en) 1992-11-17 1992-11-17 Dual projection device with central single light source - has housing panels defining parallel cooling channels for counter-flow cooling of light source

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636865A2 (en) * 1993-07-28 1995-02-01 Jasco Corporation Lamp unit and optical analyzer using the same
EP1195640A1 (en) * 2000-09-29 2002-04-10 Seiko Epson Corporation A light source and a projector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0636865A2 (en) * 1993-07-28 1995-02-01 Jasco Corporation Lamp unit and optical analyzer using the same
EP0636865A3 (en) * 1993-07-28 1995-05-17 Jasco Corp Lamp unit and optical analyzer using the same.
US5568007A (en) * 1993-07-28 1996-10-22 Jasco Corporation Lamp unit and optical analyzer using the same
EP1195640A1 (en) * 2000-09-29 2002-04-10 Seiko Epson Corporation A light source and a projector
US6698899B2 (en) 2000-09-29 2004-03-02 Seiko Epson Corporation Light source and projector
US6902275B2 (en) 2000-09-29 2005-06-07 Seiko Epson Corporation Light source and projector

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Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee
8170 Reinstatement of the former position
8110 Request for examination paragraph 44
8170 Reinstatement of the former position
8139 Disposal/non-payment of the annual fee