DE9420171U1 - Adjustable surface spotlight for stage and studio - Google Patents
Adjustable surface spotlight for stage and studioInfo
- Publication number
- DE9420171U1 DE9420171U1 DE9420171U DE9420171U DE9420171U1 DE 9420171 U1 DE9420171 U1 DE 9420171U1 DE 9420171 U DE9420171 U DE 9420171U DE 9420171 U DE9420171 U DE 9420171U DE 9420171 U1 DE9420171 U1 DE 9420171U1
- Authority
- DE
- Germany
- Prior art keywords
- headlight
- screen
- arc lamp
- light
- diffuser
- 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.)
- Expired - Lifetime
Links
- 239000011521 glass Substances 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 4
- 239000005336 safety glass Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004313 glare Effects 0.000 description 2
- 241000283070 Equus zebra Species 0.000 description 1
- 239000004904 UV filter Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/12—Combinations of only three kinds of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
- F21V11/04—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
- F21V29/677—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Description
Die Erfindung betrifft einen Scheinwerfer oder Lichtprojektor, bei dem mittels einer Bogenlampe durch eine Streuscheibe Licht direkt abgestrahlt wird.The invention relates to a headlight or light projector in which light is emitted directly through a diffuser by means of an arc lamp.
Aus der DE 23 40 675 ist eine Erfindung bekannt, die sich auf einen Scheinwerfer mit rinnenförmigen Spieigei bezieht. Dieser Scheinwerfer hat jedoch keine Verdunklungsmöglichkeit, kein Schutzglas und keinen Diffusor. Würde man diesen Scheinwerfer mit einer Bogenlampe und einer Verdunklungsblende betreiben, würde die Blende zu sehr mit Hitze belastet werden.An invention is known from DE 23 40 675 that relates to a headlight with a channel-shaped mirror. However, this headlight has no darkening option, no protective glass and no diffuser. If this headlight were to be operated with an arc lamp and a darkening screen, the screen would be exposed to too much heat.
Aus der DE 35 24 818 ist ein Scheinwerfer für diffuse Beleuchtung bekannt. Dieser Scheinwerfer weist eine Lichtquelle in einer kleinen Bodenkammer, die auf einen Reflektorspiegel ausgerichtet ist auf. Die Verdunklung des Apparates wird hier durch Wegschwenken der Lichtquelle erreicht, wodurch eine sehr aufwendige Mechanik erforderlich ist. Dieser Scheinwerfer hat durch seinen indirekten Strahlengang eine geringe Lichtausbeute und ist dementsprechend für stärkere Beleuchtungsanforderungen nicht geeignet.A spotlight for diffuse lighting is known from DE 35 24 818. This spotlight has a light source in a small floor chamber that is aligned with a reflector mirror. The darkening of the device is achieved by swiveling the light source away, which requires very complex mechanics. This spotlight has a low light output due to its indirect beam path and is therefore not suitable for stronger lighting requirements.
Nach dem heutigen Stand der Technik ist es nicht möglich, bei der Verwendung einer Bogenlampe hoher Farbtemperatur in einem direkt strahlendem Scheinwerfer ein diffuses Leuchtfeld bei Verwendung einer Verdunkiungsblende zu erreichen, ohne erhebliche Lichtverluste hinnehmen zu müssen. Durch das annähernd punktförmige Licht von Bogenlampen ergeben sich für den Anwender unerwünschte, harte Vignettierungseffekte durch das Scheinwerfergehäuse, femer trotz der Verwendung von diffusen Filtern durch die herkömmlicherweise vorgesetzten Verdunkelungsblende der dem Fachmann bekannte „Zebrastreifeneffekt". Dieser Effekt kann zwar durch Graukeilblenden bzw. Graufiiterverlaufs-Scroller vermieden werden, jedoch erweisen sich solche Verfahren vor Scheinwerfern mit einem großflächigen Lichtaustritt als unpraktikabel.According to the current state of the art, it is not possible to achieve a diffuse light field using an arc lamp with a high color temperature in a direct beam headlight using a blackout screen without having to accept significant light losses. The almost point-shaped light from arc lamps results in undesirable, harsh vignetting effects for the user through the headlight housing. Furthermore, despite the use of diffuse filters, the blackout screen that is usually placed in front of the headlight produces the "zebra stripe effect" known to experts. This effect can be avoided by using gray wedge screens or gray filter gradient scrollers, but such methods prove to be impractical in front of headlights with a large area of light emission.
Setzt man eine Verdunklungsblende direkt vor die Lichtquelle treten wegen der materialspezifischen thermischen Dynamik an den Blendenflügel, speziell bei längerer Brenndauer des Scheinwerfers bei geschlossener Blende, mechanische Probleme auf.If a blackout shade is placed directly in front of the light source, mechanical problems occur due to the material-specific thermal dynamics of the shade blades, especially if the headlight burns for a longer period with the shade closed.
Gemäß der Erfindung soll ein in der Heiligkeit stufenlos regelbarer Flächenstrahler für Bogenlampen geschaffen werden, der eine bessere Lichtausbeute bei einem diffusen, gleichmäßigen Leuchtfeld erreicht. Die erfindungsgemäße Lösung dieser Aufgabe ist durch die im Kennzeichen von Anspruch 1 angegebene Merkmale gekennzeichnet. Die Konstruktion ermöglicht durch die parabolische Form des Reflektors und die dadurch erreichte Parallelisierung des Strahlenganges, und durch die inneniiegende Blende, daß das Licht der Lichtquelle ohne nennenswerten Verluste zum Diffusor gelangt. Ferner wird durch die horizontale Riffelung des Diffusors die Restvignettierung der ebenfalls horizontal liegenden Blendenflügel optimal kompensiert.According to the invention, a surface radiator for arc lamps with continuously adjustable brightness is to be created, which achieves a better light output with a diffuse, uniform light field. The solution to this problem according to the invention is characterized by the features specified in the characterizing part of claim 1. The design enables the light from the light source to reach the diffuser without any significant losses due to the parabolic shape of the reflector and the resulting parallelization of the beam path, and due to the internal diaphragm. Furthermore, the horizontal ribbing of the diffuser optimally compensates for the residual vignetting of the diaphragm blades, which are also horizontal.
Die bei Bogenlampen auftretende ^Jieblicfcie.&Uizesträhluhg wird durch einen, in der Größe geeignet zu wählenden, aber nicht die gesamte Austrittsöffnungen abdeckenden, UV-Schutzfilter von der Verdunklungsblende abgehalten. Der im Brennraum anfallende Hitzestau wird durch strömungsgünstig, vornehmlich im oberen und unteren Bereich angebrachten, Be- und Entlüftungsöffnungen sowie durch eine geeignete Konstruktion des Rückgehäuses, vermieden. Der im unteren Bereich des Scheinwerfers angebrachte Lüfter dient bei der Verwendung von Lampen höherer Leistung zur Kühlung des UV-Filters, der Verdunklungsblende und der Diffusionsscheibe.The glare and glare that occurs with arc lamps is kept away from the blackout screen by a UV protection filter that is selected to be of suitable size but does not cover the entire outlet opening. The heat build-up that occurs in the combustion chamber is avoided by airflow-optimized ventilation openings, primarily in the upper and lower areas, and by a suitable design of the rear housing. The fan installed in the lower area of the headlight is used to cool the UV filter, the blackout screen and the diffusion disk when using higher-power lamps.
Der Vorbau des Strahlers ist so ausgestaltet, daß eine in der Größe geeignete Verdunklungsblende mittels Führungsschienen eingeschoben werden kann. Desweiteren ermöglicht die Montage des gesamten Vorbaus auf einem Rahmen, der durch Scharniere mit dem Gehäuse verbunden ist, einfachen Zugriff zum Brennraum für Wartungsarbeiten.The front of the spotlight is designed so that a darkening panel of suitable size can be inserted using guide rails. Furthermore, the installation of the entire front on a frame that is connected to the housing by hinges allows easy access to the combustion chamber for maintenance work.
Weitere Einzelheiten und vorteilhafte Merkmale der Erfindung ergeben sich aus der nachstehenden Erläuterung der beiliegenden Zeichnung, welche die bevorzugte Ausführungsform der Erfindung ohne Beschränkung des Erfindungsgedanken offenbart.Further details and advantageous features of the invention emerge from the following explanation of the accompanying drawing, which discloses the preferred embodiment of the invention without limiting the inventive concept.
In Fig.1 ist in einem Gehäuse (1) ein Reflektor (2) untergebracht, in dessen Brennpunkt eine Bogenlampe (3) angebracht ist, Das Gehäuse ist durch eine aus Sicherheitshartglas bestehende Vertikalstreuscheibe (4) abgedeckt. Zwischen der Bogenlampe und der Streuscheibe befindet sich ein UV-Schutzglas (5) sowie eine einschiebbare Verdunklungsblende (6). Dieser Zwischenraum wird durch einen im unteren Bereich des Gehäuses angebrachten Lüfter (7) entlüftet. An der Unterseite des Scheinwerfergehäuses befindet sich das Zündgerät (8) mit Spannungseinspeisung. In Fig.1, a reflector (2) is housed in a housing (1), at the focal point of which an arc lamp (3) is mounted. The housing is covered by a vertical diffuser (4) made of safety tempered glass. Between the arc lamp and the diffuser there is a UV protective glass (5) and a retractable blackout screen (6). This space is ventilated by a fan (7) mounted in the lower part of the housing. The ignition device (8) with voltage supply is located on the underside of the headlight housing.
In Fig.2 sind in einem Gehäuse (1) drei Reflektoren (2) untergebracht, in deren Brennpunkt jeweils eine Bogenlampe (3) angebracht ist. Zwischen den Bogenlampen und der Streuscheibe befindet sich neben der einschiebbaren Verdunklungsblende (6) ein UV-Schutzglas bzw. vor jeder Brennkammer jeweils ein UV-Schutzglas (5). Die Bezeichnung der weiteren Teile ist analog zu Fig.1,In Fig.2, three reflectors (2) are housed in a housing (1), each of which has an arc lamp (3) at its focal point. Between the arc lamps and the diffuser, next to the retractable blackout screen (6), there is a UV protective glass and in front of each combustion chamber there is a UV protective glass (5). The designation of the other parts is analogous to Fig.1.
Es wurde die bevorzugte Ausführungsform der Erfindung erläutert, jedoch versteht es sich für den Fachmann, daß hier Abwandlungen ohne Abweichen vom Geist der Erfindung und Umfang des patentrechtlichen Schutzes möglich sind.The preferred embodiment of the invention has been explained, but it will be understood by those skilled in the art that modifications are possible without departing from the spirit of the invention and the scope of patent protection.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9420171U DE9420171U1 (en) | 1994-12-16 | 1994-12-16 | Adjustable surface spotlight for stage and studio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9420171U DE9420171U1 (en) | 1994-12-16 | 1994-12-16 | Adjustable surface spotlight for stage and studio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE9420171U1 true DE9420171U1 (en) | 1995-04-06 |
Family
ID=6917516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE9420171U Expired - Lifetime DE9420171U1 (en) | 1994-12-16 | 1994-12-16 | Adjustable surface spotlight for stage and studio |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE9420171U1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011286A1 (en) * | 1999-08-07 | 2001-02-15 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Beam projector |
| FR2846404A1 (en) * | 2002-10-23 | 2004-04-30 | Electricite De France | Optical IR heating assembly for rapid heating of a body includes parallel assembly of thermal radiation emitting tubes and reflector or refractor for converging radiation to a small target area to be heated |
| FR2869092A1 (en) * | 2004-04-15 | 2005-10-21 | Securlite Sa | Lamp with directional light diffuser has series of angled plates inserted into transverse channels in transparent panel covering light source(s) |
| WO2008078112A1 (en) * | 2006-12-23 | 2008-07-03 | Thruvision Limited | Environmental conditioning apparatus, a chamber for use thereof and a related detection method and apparatus |
| WO2009121753A1 (en) * | 2008-04-03 | 2009-10-08 | Fael S.P.A. | Spotlight with a louver flange |
-
1994
- 1994-12-16 DE DE9420171U patent/DE9420171U1/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001011286A1 (en) * | 1999-08-07 | 2001-02-15 | Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg | Beam projector |
| FR2846404A1 (en) * | 2002-10-23 | 2004-04-30 | Electricite De France | Optical IR heating assembly for rapid heating of a body includes parallel assembly of thermal radiation emitting tubes and reflector or refractor for converging radiation to a small target area to be heated |
| FR2869092A1 (en) * | 2004-04-15 | 2005-10-21 | Securlite Sa | Lamp with directional light diffuser has series of angled plates inserted into transverse channels in transparent panel covering light source(s) |
| WO2008078112A1 (en) * | 2006-12-23 | 2008-07-03 | Thruvision Limited | Environmental conditioning apparatus, a chamber for use thereof and a related detection method and apparatus |
| WO2009121753A1 (en) * | 2008-04-03 | 2009-10-08 | Fael S.P.A. | Spotlight with a louver flange |
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