EP1194717B1 - Light diffuser - Google Patents
Light diffuser Download PDFInfo
- Publication number
- EP1194717B1 EP1194717B1 EP01936405A EP01936405A EP1194717B1 EP 1194717 B1 EP1194717 B1 EP 1194717B1 EP 01936405 A EP01936405 A EP 01936405A EP 01936405 A EP01936405 A EP 01936405A EP 1194717 B1 EP1194717 B1 EP 1194717B1
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- EP
- European Patent Office
- Prior art keywords
- bag
- light diffuser
- pressure
- adapter ring
- light
- 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
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Classifications
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- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
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- 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
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
- F21V3/023—Chinese lanterns; Balloons
- F21V3/026—Chinese lanterns; Balloons being inflatable
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- 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
Definitions
- the invention relates to a light diffuser, comprising a holding device and a releasably connected to the holding device, at least partially translucent, inflatable bag, wherein the holding device comprises an adapter ring on the one hand for attachment to a headlight and on the other hand for receiving the bag, further, the adapter ring to the mounting side translucent and pressure-tight is completed and provided on the holding device means for supplying a gaseous filling medium, according to the preamble of patent claim 1.
- PCT WO00 / 16005 discloses a lighting device comprising a headlamp and an inflatable bag releasably connected thereto, wherein the bag consists of a material which is at least partially permeable to light and a transparent light inlet opening is present on the bag. This light entrance opening is arranged opposite a light exit opening of a headlamp, so that a corresponding light entry is ensured.
- the light entrance opening of the inflatable bag is defined by a transparent glass sheet or a transparent film which is airtightly connected along its peripheral edge to the edge of a corresponding opening in the bag. When inflated, the bag assumes a substantially cylindrical, spherical or hemispherical shape, but also the shape of a cone or a truncated cone.
- the filling of the bag is carried out by means of a fan and corresponding gas inlet openings, which are connectable to this blower.
- a valve for filling the bag can now be attached either to the bag itself or in the area of a holding device to perform the filling.
- the filling itself is not without problems.
- relatively small differences in pressure are sufficient to transform the bag into a taut form, and on the other hand, refilling or refilling the bag with gas must be possible in the shortest possible time in rotating pauses, without the need for complicated handling.
- maximum pressure values are not exceeded in order to prevent, for example, tearing off and throwing away the airbag.
- a likewise known illumination device has a closed luminescent screen surface which is inflated by a fan and illuminated by a light source located inside the luminescent screen surface.
- the umbrella itself is on a pedestal or stand attached.
- the local device requires a continuous operation of the fans, with the result of unavoidable noise developments and the above-mentioned disadvantages when using such a device for film and television recordings.
- a light diffuser consisting of a holding device and a releasably connected to the holding device, at least partially air-permeable, inflatable bag so that an optimized and secure filling is not possible from this specially trained personnel.
- the system as a whole accordingly pressure-tight, so that a longer use without filling or refilling activities, especially for film and television recordings, is possible.
- the basic idea of the invention is to design a pressure gas connection and an electronically operable valve for supplying gas to the holding device designed as an adapter ring, wherein a first pressure sensor determines the build-up internal pressure when the sack is fixed to the ring and delivers a switch-off signal if an adjusting or predetermined maximum pressure value is reached, so that the filling of the bag is automatically completed, regardless of whether and to what extent a button for actuating the valve is still active or not.
- the button can be manually activated as mentioned for gas filling or gas refilling, which is provided according to the invention for an automatic quasi final shutdown.
- a further preferred embodiment of the invention is based on a second sensor for detecting the ambient pressure, so that a switch-off signal based on a predeterminable differential pressure value between internal and external pressure, i. atmospheric pressure is derivable.
- the last-mentioned embodiment has the particular advantage that a correction of the maximum pressure value is not required, in particular when recording at different heights of normal zero. It has been shown that even relatively low inflation pressures for a tight shape of the bag in the inflated state are sufficient and higher pressure values bring no further advantages, but rather entail an increased risk of accidents. Since light diffusers of the type described are fundamentally applicable for mobile use and are used at very different locations, automatic valve deactivation and pressure control on the basis of differential pressure values are particularly advantageous.
- a further compressed gas connection can be provided for the series connection of multiple light diffusers on the adapter ring, so that only a central gas supply is required and the filling gas can be looped analogous to the electrical supply of an associated electric headlight.
- the one or more pressure gas connections are connected via pressure hoses with a spatially remotely located pressure accumulator or a pressure compressor.
- a compressor can be switched from the pressure generating to a suction operation. In this way, the time and thus costs can be saved in an advantageous manner when dismantling or remodeling the lighting devices.
- the compressed gas connections can also lead to a gas storage tank.
- the on-site use of a compressor, especially under difficult local conditions, is not required.
- the adapter ring In order to improve the sealing of the bag receptacle on the adapter ring, the adapter ring in a bag-side area surrounding beads with projections and recesses, which serve to fix a surface structure side corresponding profile seal.
- the profile seal is now pushed over the free end of the adapter ring. Subsequently, the bag is placed with its opening side on the profile seal and pressure-tight, but easily releasably secured by means of a clamping ring or clamping band on the adapter ring.
- the light diffuser 1 which is completed with a headlight 2, comprises an airbag 3 and a holding device 4 arranged between the headlight 2 and the sack 3 in the manner of an adapter ring.
- the holding device 4 can now be attached to the headlight 2 via a flange-like projection 8, retaining bracket 9 and ring 13.
- the headlight 2 itself is pivotally fixed via a holder 10 to a frame, not shown.
- a translucent disk 12 is pressure-tightly fixed in the adapter ring 4, so that there is a corresponding airtight space when the bag is mounted.
- a compressed gas connection 6 is further arranged with an electronically actuated valve for gas supply.
- the building up internal pressure is determined with the bag connected and a shutdown signal to the electronic valve, if a predefinable maximum pressure value is reached.
- a second sensor 11 is used to detect the ambient pressure, so that a shutdown signal on the basis of a differential pressure value inside / outside can be derived.
- the electronic switching valve which is executable combined with the compressed gas connection 6, can be activated manually via a switch, not shown, for gas filling or gas refilling.
- the bag is then slipped over the bag receiving side 16 and held releasably by means of a tension band 17.
- valves For easy emptying can be incorporated in the bag 3 still a valve with a large opening area.
- Such valves are known for example from the dinghy technology, so that further explanations are unnecessary.
- Ausgestaltend the bag can be inside at least partially provided with light reflection zones or color layers, so that lighting effects can be optimized depending on the application.
- a valve with a large opening cross-section or a screw opening is mounted in the adapter ring. This valve or opening is used to quickly empty the bag, but can also be used to pre-fill with the help of a blower connected there.
- an electrical remote control unit can be formed, which has a preferably optical signal unit, for example in the form of an LED.
- the light diffuser presented makes it possible, in a particularly simple and reliable manner, to fill an airbag which is fastened to a corresponding adapter ring, without the filling process itself having to be monitored in a complex manner at the location of the film.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Tents Or Canopies (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Liquid Crystal (AREA)
- Glass Compositions (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Percussion Or Vibration Massage (AREA)
- Air Bags (AREA)
- Pipe Accessories (AREA)
- Bag Frames (AREA)
Abstract
Description
Die Erfindung betrifft einen Lichtdiffusor, bestehend aus einer Haltevorrichtung sowie einem mit der Haltevorrichtung lösbar verbundenen, mindestens teilweise lichtdurchlässigen, aufblasbaren Sack, wobei die Haltevorrichtung einen Adapterring einerseits zum Befestigen an einem Scheinwerfer sowie andererseits zur Aufnahme des Sacks umfasst, weiterhin der Adapterring zur Befestigungsseite lichtdurchlässig und druckdicht abgeschlossen ist und an der Haltevorrichtung Mittel zum Zuführen eines gasförmigen Füllmediums vorgesehen sind, gemäß Oberbegriff des Patentanspruchs 1.The invention relates to a light diffuser, comprising a holding device and a releasably connected to the holding device, at least partially translucent, inflatable bag, wherein the holding device comprises an adapter ring on the one hand for attachment to a headlight and on the other hand for receiving the bag, further, the adapter ring to the mounting side translucent and pressure-tight is completed and provided on the holding device means for supplying a gaseous filling medium, according to the preamble of patent claim 1.
Aus der PCT WO00/16005 ist eine Beleuchtungeinrichtung bestehend aus einem Scheinwerfer und einem mit diesem lösbar verbundenen aufblasbaren Sack bekannt, wobei der Sack aus einem für Licht zumindest teilweise durchlässigen Material besteht und am Sack eine durchsichtige Lichteintrittsöffnung vorhanden ist. Diese Lichteintrittsöffnung wird einer Lichtaustrittsöffnung eines Scheinwerfers gegenüber angeordnet, so dass ein entsprechender Lichteintritt gewährleistet ist. Die Lichteintrittsöffnung des aufblasbaren Sacks ist durch eine durchsichtige Glasscheibe oder eine durchsichtige Folie definiert, die längs ihres Umfangsrands mit dem Rand einer entsprechenden Öffnung im Sack luftdicht verbunden ist. Der Sack nimmt im aufgeblasenen Zustand eine im wesentlichen Zylinder-, Kugel- oder Halbkugelform, aber auch die Form eines Kegels oder eines Kegelstumpfes an. Mit der vorbekannten Beleuchtungseinrichtung besteht die Möglichkeit einer besonders homogenen, diffusen Lichtverteilung, mit der tageslichtähnliche Effekte erreicht werden können. Insbesondere gelingt es mit einer derartigen Beleuchtungseinrichtung, Spiegeleffekte der Lichtquellen zu vermeiden, die insbesondere bei Werbeaufnahmen an hochreflektierenden, glänzenden Objekten, z.B. Automobilen, von Nachteil sind.PCT WO00 / 16005 discloses a lighting device comprising a headlamp and an inflatable bag releasably connected thereto, wherein the bag consists of a material which is at least partially permeable to light and a transparent light inlet opening is present on the bag. This light entrance opening is arranged opposite a light exit opening of a headlamp, so that a corresponding light entry is ensured. The light entrance opening of the inflatable bag is defined by a transparent glass sheet or a transparent film which is airtightly connected along its peripheral edge to the edge of a corresponding opening in the bag. When inflated, the bag assumes a substantially cylindrical, spherical or hemispherical shape, but also the shape of a cone or a truncated cone. With the known lighting device there is the possibility of a particularly homogeneous, diffuse Light distribution with which daylight-like effects can be achieved. In particular, with such a lighting device, it is possible to avoid specular effects of the light sources, which are disadvantageous, in particular, in commercial recordings on highly reflective, glossy objects, eg automobiles.
Als Material für den Lichtsack kann z.B. Segel-, insbesondere auch Spinnakertuch Verwendung finden, das zum einen die gewünschte Lichtdurchlässigkeit und Transparenz und zum anderen auch die erforderliche Druckfestigkeit besitzt.
Bei der bekannten Beleuchtungseinrichtung erfolgt die Füllung des Sacks mit Hilfe eines Gebläses und entsprechenden Gaseinlassöffnungen, die mit diesem Gebläse verbindbar sind. Ein Ventil zum Füllen des Sacks kann nun entweder am Sack selbst oder im Bereich einer Haltevorrichtung angebracht werden, um das Füllen durchzuführen. Der Füllvorgang selbst ist jedoch nicht unproblematisch. Zum einen genügen bereits relativ geringe Druckunterschiede, um den Sack in eine straffe Form zu überführen, und zum anderen muß in Drehpausen in möglichst kurzer Zeit ein Wiederauffüllen oder Nachfüllen des Sacks mit Gas möglich sein, ohne dass hierfür ein aufwendiges Handling erforderlich ist. Aus Gründen der Arbeitssicherheit und des Unfallschutzes ist dabei zu beachten, dass maximale Druckwerte nicht überschritten werden, um z.B. ein Abreißen und Wegschleudern des Luftsacks zu verhindern.As a material for the bag of light, for example sail, especially Spinnaker cloth can be used, which on the one hand has the desired light transmission and transparency and on the other hand, the required compressive strength.
In the known lighting device, the filling of the bag is carried out by means of a fan and corresponding gas inlet openings, which are connectable to this blower. A valve for filling the bag can now be attached either to the bag itself or in the area of a holding device to perform the filling. However, the filling itself is not without problems. On the one hand, relatively small differences in pressure are sufficient to transform the bag into a taut form, and on the other hand, refilling or refilling the bag with gas must be possible in the shortest possible time in rotating pauses, without the need for complicated handling. For reasons of occupational safety and accident prevention, it should be noted that maximum pressure values are not exceeded in order to prevent, for example, tearing off and throwing away the airbag.
Als ebenfalls problematisch hat sich der Dichtungsbereich zwischen dem befestigungsseitigen, offenen Ende des Luftsacks und der Haltevorrichtung erwiesen, mit der Folge eines vielfach notwendigen Nachfüllens der Luftsäcke mit Unterbrechungen im Drehbetrieb bei Filmaufnahmen.As also problematic, the sealing area between the attachment-side, open end of the airbag and the holding device has proven, with the result of a much necessary refilling of the air bags with interruptions in the rotary operation during film shooting.
Eine ebenfalls bekannte Beleuchtungseinrichtung gemäß DE 195 29 648 A1 weist eine geschlossenen Leuchtschirmfläche auf, die von einem Ventilator aufgeblasen und von einer sich innerhalb der Leuchtschirmfläche befindlichen Lichtquelle beleuchtet wird. Der Schirm selbst ist auf einem Sockel oder Gestell befestigt. Die dortige Einrichtung erfordert jedoch ein kontinuierliches Betätigen der Ventilatoren mit der Folge nicht zu vermeidender Geräuschentwicklungen und den bereits oben genannten Nachteilen bei Verwendung einer derartigen Einrichtung für Film- und Fernsehaufnahmen.A likewise known illumination device according to DE 195 29 648 A1 has a closed luminescent screen surface which is inflated by a fan and illuminated by a light source located inside the luminescent screen surface. The umbrella itself is on a pedestal or stand attached. However, the local device requires a continuous operation of the fans, with the result of unavoidable noise developments and the above-mentioned disadvantages when using such a device for film and television recordings.
Aus dem vorstehenden ist daher Aufgabe der Erfindung, einen Lichtdiffusor bestehend aus einer Haltevorrichtung sowie einem mit der Haltevorrichtung lösbar verbundenen, mindestens teilweise luftdurchlässigen, aufblasbaren Sack so weiterzubilden, dass ein optimiertes und sicheres Füllen auch von hierzu nicht besonders unterwiesenem Personal möglich ist. Darüber hinaus soll bei dem zu schaffenden Lichtdiffusor das System insgesamt entsprechend druckdicht ausgeführt sein, so dass ein längerer Einsatz ohne Füll- oder Nachfüllaktivitäten, insbesondere für Film- und Fernsehaufnahmen, möglich ist.From the foregoing, it is therefore an object of the invention to develop a light diffuser consisting of a holding device and a releasably connected to the holding device, at least partially air-permeable, inflatable bag so that an optimized and secure filling is not possible from this specially trained personnel. In addition to be created in the light diffuser to be created, the system as a whole accordingly pressure-tight, so that a longer use without filling or refilling activities, especially for film and television recordings, is possible.
Die Lösung der Aufgabe der Erfindung erfolgt mit einem Gegenstand gemäß den Merkmalen des Patentanspruchs 1, wobei die Unteransprüche mindestens zweckmäßige Ausgestaltungen und Weiterbildungen umfassen.The solution of the object of the invention is achieved with an article according to the features of claim 1, wherein the dependent claims comprise at least expedient refinements and developments.
Demgemäß besteht der Grundgedanke der Erfindung darin, an der als Adapterring ausgeführten Haltevorrichtung einen Druckgasanschluß sowie ein elektronisch betätigbares Ventil zur Gaszuführung auszubilden, wobei ein erster Drucksensor den sich aufbauenden Innendruck bei am Ring fixiertem Sack bestimmt und ein Abschaltsignal dann liefert, wenn ein einstell- oder vorgebbarer Maximaldruckwert erreicht ist, so dass die Füllung des Sacks automatisch beendet ist, und zwar unabhängig davon, ob und inwieweit ein Taster zum Betätigen des Ventils noch aktiv ist oder nicht.Accordingly, the basic idea of the invention is to design a pressure gas connection and an electronically operable valve for supplying gas to the holding device designed as an adapter ring, wherein a first pressure sensor determines the build-up internal pressure when the sack is fixed to the ring and delivers a switch-off signal if an adjusting or predetermined maximum pressure value is reached, so that the filling of the bag is automatically completed, regardless of whether and to what extent a button for actuating the valve is still active or not.
Der Taster kann wie erwähnt manuell zur Gasfüllung oder Gasnachfüllung aktiviert werden, wobei erfindungsgemäß für eine automatische quasi Endabschaltung gesorgt ist. Im Sinne der Erfindung liegt darüber hinaus eine Fernsteuerung der Taster-Betätigung über eine Infrarot-Schnittstelle in Verbindung mit einer handelsüblichen, entsprechend programmierbaren Infrarot-Sendeeinheit.The button can be manually activated as mentioned for gas filling or gas refilling, which is provided according to the invention for an automatic quasi final shutdown. For the purposes of the invention is also a remote control of the button operation via an infrared interface in conjunction with a commercially available, suitably programmable infrared transmitter unit.
Eine weitere bevorzugte Ausführungsform der Erfindung geht von einem zweiten Sensor zur Erfassung des Umgebungsdrucks aus, so dass ein Abschaltsignal auf der Basis eines vorgebbaren Differenzdruckwerts zwischen Innen- und Außendruck, d.h. atmosphärischem Druck ableitbar ist. Letztgenannte Ausführungsform hat insbesondere den Vorteil, dass eine Korrektur des Maximaldruckwerts insbesondere bei Aufnahmen in abweichenden Höhen von Normalnull nicht erforderlich ist. Es hat sich nämlich gezeigt, dass bereits relativ geringe Fülldrucke für eine straffe Form des Sacks im aufgeblasenen Zustand genügend sind und höhere Druckwerte keine weiteren Vorteile bringen, vielmehr eine erhöhte Unfallgefahr nach sich ziehen. Da Lichtdiffusoren der beschriebenen Art grundsätzlich für den mobilen Einsatz anwendbar sind und an ganz unterschiedlichen Orten Verwendung finden, ist die automatische Ventilabschaltung und Drucksteuerung auf der Basis von Differenzdruckwerten besonders vorteilhaft.A further preferred embodiment of the invention is based on a second sensor for detecting the ambient pressure, so that a switch-off signal based on a predeterminable differential pressure value between internal and external pressure, i. atmospheric pressure is derivable. The last-mentioned embodiment has the particular advantage that a correction of the maximum pressure value is not required, in particular when recording at different heights of normal zero. It has been shown that even relatively low inflation pressures for a tight shape of the bag in the inflated state are sufficient and higher pressure values bring no further advantages, but rather entail an increased risk of accidents. Since light diffusers of the type described are fundamentally applicable for mobile use and are used at very different locations, automatic valve deactivation and pressure control on the basis of differential pressure values are particularly advantageous.
Weiterhin kann am Adapterring ein weiterer Druckgasanschluß zum Hintereinanderschalten mehrerer Lichtdiffusoren vorgesehen sein, so dass nur eine zentrale Gaszuführung erforderlich ist und das Füllgas analog der elektrischen Versorgung eines zugeordneten elektrischen Scheinwerfers durchgeschleift werden kann.Furthermore, a further compressed gas connection can be provided for the series connection of multiple light diffusers on the adapter ring, so that only a central gas supply is required and the filling gas can be looped analogous to the electrical supply of an associated electric headlight.
Der oder die Druckgasanschlüsse sind über Druckschläuche mit einem räumlich entfernt anordenbaren Druckspeicher oder einem Druckkompressor verbindbar.The one or more pressure gas connections are connected via pressure hoses with a spatially remotely located pressure accumulator or a pressure compressor.
Zum schnellen Entleeren der bevorzugt mit Luft gefüllten Säcke kann ein Kompressor vom Druckerzeugungs- in einen Saugbetrieb umgeschaltet werden. Auf diese Weise kann beim Ab- oder Umbau der Beleuchtungseinrichtungen in vorteilhafter Weise Zeit und damit Kosten gespart werden.For fast emptying of the preferably air-filled bags, a compressor can be switched from the pressure generating to a suction operation. In this way, the time and thus costs can be saved in an advantageous manner when dismantling or remodeling the lighting devices.
Wie erwähnt, können die Druckgasanschlüsse auch zu einem Gasspeicherbehälter führen. In diesem Fall ist der Vor-Ort-Einsatz eines Kompressors, insbesondere unter schwierigen lokalen Bedingungen, nicht erforderlich.As mentioned, the compressed gas connections can also lead to a gas storage tank. In this case, the on-site use of a compressor, especially under difficult local conditions, is not required.
Zur weiteren Verbesserung des schnellen Entleerens der Luftsäcke kann an oder in diesen ein Abblasventil mit großem Öffnungsquerschnitt vorgesehen sein.To further improve the rapid emptying of the air bags can be provided on or in this a blow-off valve with a large opening cross-section.
Um das Abdichten der Sackaufnahme am Adapterring zu verbessern, weist der Adapterring in einem sackseitigen Bereich umlaufende Sicken mit Vor- und Rücksprüngen auf, wobei diese dem Fixieren einer oberflächenstrukturseitig korrespondierenden Profildichtung dienen. Die Profildichtung wird nun über das freie Ende des Adapterrings geschoben. Im Anschluss daran wird der Sack mit seiner Öffnungsseite über die Profildichtung gestülpt und mittels eines Spannrings oder Spannbands am Adapterring druckdicht, jedoch ohne weiteres lösbar befestigt.In order to improve the sealing of the bag receptacle on the adapter ring, the adapter ring in a bag-side area surrounding beads with projections and recesses, which serve to fix a surface structure side corresponding profile seal. The profile seal is now pushed over the free end of the adapter ring. Subsequently, the bag is placed with its opening side on the profile seal and pressure-tight, but easily releasably secured by means of a clamping ring or clamping band on the adapter ring.
Die Erfindung soll nachstehend anhand eines Ausführungsbeispiels sowie unter Zuhilfenahme einer Prinzipdarstellung näher erläutert werden.The invention will be explained in more detail below with reference to an embodiment and with the aid of a schematic diagram.
Der mit einem Scheinwerfer 2 komplettierte Lichtdiffusor 1 umfasst einen Luftsack 3 und eine zwischen dem Scheinwerfer 2 und dem Sack 3 angeordnete Haltevorrichtung 4 nach Art eines Adapterrings. Die Haltevorrichtung 4 kann nun mit dem Scheinwerfer 2 über einen flanschartigen Ansatz 8, Haltebügel 9 und Ring 13 befestigt werden. Der Scheinwerfer 2 selbst ist über eine Halterung 10 schwenkbar an einem nicht gezeigten Gestell fixiert.The light diffuser 1, which is completed with a headlight 2, comprises an airbag 3 and a holding device 4 arranged between the headlight 2 and the sack 3 in the manner of an adapter ring. The holding device 4 can now be attached to the headlight 2 via a flange-
Eine lichtdurchlässige Scheibe 12 ist druckdicht im Adapterring 4 fixiert, so dass sich bei montiertem Sack ein entsprechender luftdichter Raum ergibt.A
Am Adapterring 4 ist weiterhin ein Druckgasanschluss 6 mit einem elektronisch betätigbaren Ventil zur Gaszuführung angeordnet.On the adapter ring 4, a compressed gas connection 6 is further arranged with an electronically actuated valve for gas supply.
Mit Hilfe des ersten Drucksensors 7 wird der sich aufbauende Innendruck bei angeschlossenem Sack bestimmt und ein Abschaltsignal zum elektronischen Ventil geführt, wenn ein vorgebbarer Maximaldruckwert erreicht ist.With the help of the first pressure sensor 7, the building up internal pressure is determined with the bag connected and a shutdown signal to the electronic valve, if a predefinable maximum pressure value is reached.
Ein zweiter Sensor 11 dient der Erfassung des Umgebungsdrucks, so dass ein Abschaltsignal auf der Basis eines Differenzdruckwerts innen/außen ableitbar ist.A
Das elektronische Schaltventil, das mit dem Druckgasanschluss 6 kombiniert ausführbar ist, kann über einen nicht gezeigten Taster manuell zur Gasfüllung oder Gasnachfüllung aktiviert werden.The electronic switching valve, which is executable combined with the compressed gas connection 6, can be activated manually via a switch, not shown, for gas filling or gas refilling.
An der Sackaufnahmeseite 16 des Adapterrings 4 ist mindestens eine umlaufende Sicke 14 eingeprägt, die der Aufnahme einer entsprechend korrespondiert geformten Profildichtung 5 dient. Der Sack wird dann über die Sackaufnahmeseite 16 gestülpt und mit Hilfe eines Spannbands 17 lösbar gehalten.At the
Zum leichten Entleeren kann im Sack 3 noch ein Ventil mit großem Öffnungsquerschnitt eingearbeitet sein. Derartige Ventile sind beispielsweise aus der Schlauchboottechnik bekannt, so dass sich nähere Ausführungen hierzu erübrigen.For easy emptying can be incorporated in the bag 3 still a valve with a large opening area. Such valves are known for example from the dinghy technology, so that further explanations are unnecessary.
Ausgestaltend kann der Sack innenseitig zumindest teilweise mit Lichtreflexzonen oder Farbschichten versehen sein, so dass Beleuchtungseffekte je nach Einsatzfall optimierbar sind. Nachdem der Sack in der vorbeschriebenen Weise mittels Profildichtung 5 und Spannband 17 am sackaufnahmeseitigen Ende 16 des Adapterrings 4 fixiert wurde und eine Verbindung des Druckgasanschlusses 6 mit einem Druckgasspeicher oder einem Druckgasgenerator, z.B. Kompressor, über entsprechende Schlaucherbindungen hergestellt wurde, kann durch Betätigen des elektronischen Ventils der Füllvorgang beginnen. Mit Erreichen eines vorgegebenen Enddruckwerts wird die Gaszuführung automatisch abgeschaltet und bei dem Ausführungsbeispiel optisch und/oder akustisch signalisiert.Ausgestaltend the bag can be inside at least partially provided with light reflection zones or color layers, so that lighting effects can be optimized depending on the application. After the bag has been fixed in the manner described above by means of profile seal 5 and
Selbstverständlich besteht die Möglichkeit, im Betrieb des Lichtdiffusors den Innendruck bzw. einen Druckabfallgradient zu überwachen und diesen bevorzugt optisch zu signalisieren, so dass bei einer Drehpause ein gezieltes Nachfüllen des entsprechenden Diffusors möglich ist.Of course, it is possible to monitor the operation of the light diffuser, the internal pressure or a pressure drop gradient and this preferably optically signal, so that during a rotation pause targeted refilling of the corresponding diffuser is possible.
Bei einer weiteren Ausführungsform der Erfindung ist im Adapterring ein Ventil mit einem großen Öffnungsquerschnitt bzw. eine Schrauböffnung angebracht. Dieses Ventil bzw. Öffnung dient dem schnellen Entleeren des Sacks, kann aber auch zum vorfüllen mit Hilfe eines dort anschließbaren Gebläses benutzt werden.In a further embodiment of the invention, a valve with a large opening cross-section or a screw opening is mounted in the adapter ring. This valve or opening is used to quickly empty the bag, but can also be used to pre-fill with the help of a blower connected there.
Zur sicheren Befestigung des Sacks besteht die Möglichkeit, am öffnungsseitigen Ende innen und außen einen streifenförmigen elastischen Ring anzubringen, welcher im Zusammenwirken mit dem Spannring oder Spannband für ein dichtes Anpressen des Sacks im Bereich des Adapterrings 4 sorgt.For secure attachment of the bag, it is possible to attach at the opening end inside and outside a strip-shaped elastic ring, which provides in cooperation with the clamping ring or strap for a dense pressing of the bag in the region of the adapter ring 4.
Neben dem druckluftseitigen Durchschleifen und Hintereinanderschalten mehrerer Lichtdiffusoren kann auch die elektrische Ansteuerung der Ventile sowie die Überwachung des Drucks mittels Druckanzeige zentral von einem Schaltgerät aus erfolgen. Insbesondere für den Fall des Betreibens mehrerer Lichtdiffusoren kann eine elektrische Fernbedienungseinheit ausgebildet werden, welche eine bevorzugt optische Signaleinheit, z.B. in Form einer LED aufweist. Durch einen Farbwechsel der Anzeige kann festgestellt werden, ob der Druck in den angeschlossenen Lichtdiffusoren bzw. Luftsäcken unter einen Sollwert sinkt, so dass in der nächsten Drehpause ein Nachfüllen durch Bedienen des elektronischen Ventils möglich ist. In einem praktischen Beispiel hat sich gezeigt, dass sowohl druckseitig als auch elektrisch bis zu zehn Lichtdiffusoren hintereinander geschaltet betrieben und überwacht werden können.In addition to the air side looping and series connection of multiple light diffusers and the electrical control of the valves and the monitoring of the pressure by means of pressure display can be done centrally from a switching device. In particular, in the case of operating a plurality of light diffusers, an electrical remote control unit can be formed, which has a preferably optical signal unit, for example in the form of an LED. By changing the color of the display can be determined whether the pressure in the connected light diffusers or air bags falls below a setpoint, so that refilling by operating the electronic valve is possible in the next rotation break. In a practical example, it has been shown that up to ten light diffusers can be used both on the pressure side and electrically can be operated and monitored in series.
Alles in allem ermöglicht es der vorgestellte Lichtdiffusor in besonders einfacher und sicherer Weise, einen Luftsack, der an einem entsprechenden Adapterring befestigt ist, zu füllen, ohne dass am Drehort in aufwendiger Weise der Füllvorgang selbst überwacht werden muß.All in all, the light diffuser presented makes it possible, in a particularly simple and reliable manner, to fill an airbag which is fastened to a corresponding adapter ring, without the filling process itself having to be monitored in a complex manner at the location of the film.
- 11
- Lichtdiffusorlight diffuser
- 22
- Scheinwerferheadlights
- 33
- Sackbag
- 44
- Adapterringadapter ring
- 55
- Profildichtungprofile seal
- 66
- DruckgasanschlussCompressed gas connection
- 77
- erster Sensorfirst sensor
- 88th
- Ringflanschannular flange
- 99
- Haltebügelheadband
- 1010
- Scheinwerferhalterungheadlight bracket
- 1111
- zweiter Sensorsecond sensor
- 1212
- lichtdurchlässige Scheibetranslucent disc
- 1313
- umlaufender Befestigungsring am Scheinwerfercircumferential fixing ring on the headlight
- 1414
- umlaufende Sickecircumferential bead
- 1616
- Sackaufnahmeseite des Adapterrings 4Bag receiving side of the adapter ring 4
- 1717
- Spannbandstrap
Claims (14)
- Light diffuser (1) consisting of a holding device (4) and an at least partly light-permeable inflatable bag (3) releasably connected to the holding device (4), wherein the holding device (4) comprises an adapter ring, one side being for fastening to a spotlight (2) and the other side being for holding the bag (3), wherein furthermore the adapter ring is closed off, light-permeably and pressure-tight, to the fastening side, and wherein means are provided at the holding device (4) for supply of a gaseous filling medium,
characterised in that
at the adapter ring there are arranged a compressed gas connection (6) and an electronically actuatable valve for the gas supply, a first pressure sensor (7) ascertaining the internal pressure that builds up in the case of a bag (3) fixed to the ring and, when an adjustable maximum pressure value has been reached, sending a switch-off signal to the valve in order to terminate or interrupt filling automatically. - Light diffuser (1) according to claim 1,
characterised in that
a second sensor (11) is provided for ascertaining the ambient pressure so that a switch-off signal can be derived on the basis of a prespecifiable differential pressure value. - Light diffuser (1) according to claim 1 or 2,
characterised in that
the electronic switching valve is activatable manually by means of a button for gas filling or gas replenishment. - Light diffuser (1) according to one of the preceding claims,
characterised in that
at the adapter ring there is provided a further compressed gas connection for connecting a plurality of light diffusers in series. - Light diffuser (1) according to one of the preceding claims,
characterised in that
the compressed gas connection(s) are arranged to be connected, by way of pressure hoses, to a compressor to be arranged at a spatially remote location. - Light diffuser (1) according to claim 5,
characterised in that
filling and replenishment of the bag (3) or bags (3) in the case of a plurality of light diffusers occurs by way of the compressor and by means of actuation of the button or buttons. - Light diffuser (1) according to claim 5,
characterised in that
after switching-over of the compressor to suction operation and valve actuation rapid emptying of the filled bags occurs. - Light diffuser (1) according to one of claims 1 to 4,
characterised in that
the compressed gas connection(s) (6) are connected, by way of pressure hoses, to a gas storage container. - Light diffuser (1) according to one of the preceding claims,
characterised in that
at the air bag (3) there is provided a gas discharge valve having a large opening cross-section. - Light diffuser (1) according to one of the preceding claims,
characterised in that
formed on the bag-holding means of the adapter ring are circumferential beads having projections and recesses, these serving for fixing a profiled seal (5) having a corresponding surface structure, and furthermore the bag being placed over the profiled seal (5) and fastened by means of a clamping ring or clamping band. - Light diffuser (1) according to one of claims 1 to 8,
characterised in that
at the adapter ring there is arranged a valve or a screw opening having a large opening cross-section, by way of which pre-filling of the bag (3), preferably using a blower, and/or rapid emptying occurs. - Light diffuser (1) according to one of claims 1 to 10,
characterised in that
at the fastening end of the bag (3) there is applied, on the inside and/or outside, a circumferential seal coating. - Light diffuser (1) according to claim 12,
characterised in that
the seal coating consists of a heat-resistant resilient material in strip form, which is joined to the bag material by a bonded connection. - Light diffuser (1) according to one of claims 1 to 13,
characterised by
a remote control unit for displaying pressure and/or actuating the electronic valve.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10026594 | 2000-05-29 | ||
| DE10026594 | 2000-05-29 | ||
| DE10028357A DE10028357A1 (en) | 2000-05-29 | 2000-06-08 | Light diffuser |
| DE10028357 | 2000-06-08 | ||
| PCT/EP2001/006117 WO2001092779A1 (en) | 2000-05-29 | 2001-05-29 | Light diffuser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1194717A1 EP1194717A1 (en) | 2002-04-10 |
| EP1194717B1 true EP1194717B1 (en) | 2006-02-01 |
Family
ID=26005877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01936405A Expired - Lifetime EP1194717B1 (en) | 2000-05-29 | 2001-05-29 | Light diffuser |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US6683719B2 (en) |
| EP (1) | EP1194717B1 (en) |
| JP (1) | JP4616541B2 (en) |
| AT (1) | ATE317092T1 (en) |
| CA (1) | CA2380654C (en) |
| DE (2) | DE10028357A1 (en) |
| DK (1) | DK1194717T3 (en) |
| ES (2) | ES1049443Y (en) |
| PT (1) | PT1194717E (en) |
| WO (1) | WO2001092779A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010094794A1 (en) | 2009-02-23 | 2010-08-26 | Licht-Technik Vertriebs Gmbh Hagenbach & Grill | Inflatable light diffuser |
| CN108317459A (en) * | 2018-01-25 | 2018-07-24 | 孙学川 | A kind of intelligence night-light |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7399097B1 (en) | 2004-10-05 | 2008-07-15 | Delapaz Xavier | Modular filtering and reflective system for photographic use |
| DE102008003352B4 (en) * | 2008-01-08 | 2010-09-30 | Nölle, Jürgen, Dipl.-Ing. | lighting device |
| US20100157569A1 (en) * | 2008-12-22 | 2010-06-24 | Anthony Vietro | Method of imaging a subject using a light diffusion balloon |
| CA2865942A1 (en) * | 2012-03-01 | 2013-09-06 | Jonathan David Chelf | Inflatable, retractable light diffuser, shading and thermal insulation system |
| US20140261719A1 (en) * | 2013-03-15 | 2014-09-18 | Richard Todd Onysko | System and method for regulating a constant positive pressure differential within a container |
| US11287103B2 (en) | 2019-04-22 | 2022-03-29 | Ism Lighting, Llc. | Low wattage balloon work light |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4855874A (en) * | 1987-06-10 | 1989-08-08 | The F. J. Westcott Company | Light modifier and method for modifying light |
| US5117344A (en) * | 1991-03-18 | 1992-05-26 | Rafael Perez | Illuminated balloon assembly |
| GB2260394B (en) * | 1991-10-12 | 1995-01-18 | Kin Ming Li | Lighting arrangements |
| US5683167A (en) * | 1995-08-09 | 1997-11-04 | Tarlow; Kenneth A. | Air supported lamp-shade structure |
| DE19529648C2 (en) | 1995-08-11 | 1997-07-10 | Peter Grotz | Lighting device |
| FR2754040B1 (en) * | 1996-10-02 | 1998-11-13 | Airstar | LIGHTING BALL WITH INFLATABLE BODY AND INTEGRATED CONTROL UNIT |
| DE29816562U1 (en) * | 1998-09-15 | 1999-02-11 | Licht Technik Vertriebsgesells | Lighting device |
-
2000
- 2000-06-08 DE DE10028357A patent/DE10028357A1/en not_active Withdrawn
-
2001
- 2001-05-29 DK DK01936405T patent/DK1194717T3/en active
- 2001-05-29 ES ES200101391U patent/ES1049443Y/en not_active Expired - Fee Related
- 2001-05-29 AT AT01936405T patent/ATE317092T1/en active
- 2001-05-29 ES ES01936405T patent/ES2258086T3/en not_active Expired - Lifetime
- 2001-05-29 DE DE50108859T patent/DE50108859D1/en not_active Expired - Lifetime
- 2001-05-29 WO PCT/EP2001/006117 patent/WO2001092779A1/en active IP Right Grant
- 2001-05-29 PT PT01936405T patent/PT1194717E/en unknown
- 2001-05-29 US US10/048,724 patent/US6683719B2/en not_active Expired - Lifetime
- 2001-05-29 CA CA2380654A patent/CA2380654C/en not_active Expired - Fee Related
- 2001-05-29 JP JP2002500150A patent/JP4616541B2/en not_active Expired - Fee Related
- 2001-05-29 EP EP01936405A patent/EP1194717B1/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010094794A1 (en) | 2009-02-23 | 2010-08-26 | Licht-Technik Vertriebs Gmbh Hagenbach & Grill | Inflatable light diffuser |
| DE102009010209A1 (en) | 2009-02-23 | 2010-09-02 | Licht-Technik Vertriebs Gmbh Hagenbach & Grill | light diffuser |
| EP2479483A1 (en) | 2009-02-23 | 2012-07-25 | Lichttechnik-Vertriebs GmbH, Hagenbach & Grill | Inflatable light diffuser |
| EP2479484A1 (en) | 2009-02-23 | 2012-07-25 | Lichttechnik-Vertriebs GmbH, Hagenbach & Grill | Inflatable light diffuser |
| US9086205B2 (en) | 2009-02-23 | 2015-07-21 | Licht-Technik Vertriebs Gmbh Hagenbach & Grill | Inflatable light diffuser |
| CN108317459A (en) * | 2018-01-25 | 2018-07-24 | 孙学川 | A kind of intelligence night-light |
Also Published As
| Publication number | Publication date |
|---|---|
| PT1194717E (en) | 2006-06-30 |
| ES1049443U (en) | 2001-12-16 |
| DE50108859D1 (en) | 2006-04-13 |
| DE10028357A1 (en) | 2001-12-20 |
| JP4616541B2 (en) | 2011-01-19 |
| ES1049443Y (en) | 2002-04-16 |
| US20020191295A1 (en) | 2002-12-19 |
| WO2001092779A1 (en) | 2001-12-06 |
| US6683719B2 (en) | 2004-01-27 |
| DK1194717T3 (en) | 2006-05-29 |
| CA2380654C (en) | 2010-08-10 |
| EP1194717A1 (en) | 2002-04-10 |
| CA2380654A1 (en) | 2001-12-06 |
| JP2003535440A (en) | 2003-11-25 |
| ES2258086T3 (en) | 2006-08-16 |
| ATE317092T1 (en) | 2006-02-15 |
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