EP1194717A1 - Light diffuser - Google Patents
Light diffuserInfo
- Publication number
- EP1194717A1 EP1194717A1 EP01936405A EP01936405A EP1194717A1 EP 1194717 A1 EP1194717 A1 EP 1194717A1 EP 01936405 A EP01936405 A EP 01936405A EP 01936405 A EP01936405 A EP 01936405A EP 1194717 A1 EP1194717 A1 EP 1194717A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light diffuser
- sack
- pressure
- diffuser according
- adapter ring
- 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.)
- Granted
Links
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
- 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
-
- 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
-
- 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 consisting of a holding device and an at least partially translucent, inflatable sack detachably connected to the holding device, the holding device comprising an adapter ring on the one hand for fastening to a headlight and on the other hand for receiving the sack, and the adapter ring on the fastening side is also translucent and is sealed pressure-tight and means for supplying a gaseous filling medium are provided on the holding device, according to the preamble of patent claim 1.
- PCT O00 / 16005 discloses a lighting device consisting of a headlight and an inflatable sack detachably connected thereto, the sack consisting of a material which is at least partially permeable to light and a transparent light entry opening being provided on the sack. This light entry opening is arranged opposite a light exit opening of a headlight, so that a corresponding light entry is ensured.
- the light entry opening of the inflatable sack is defined by a transparent glass pane or a transparent film which is connected in an airtight manner along its peripheral edge to the edge of a corresponding opening in the sack.
- the sack In the inflated state, the sack assumes an essentially cylindrical, spherical or hemispherical shape, but also the shape of a cone or a truncated cone.
- the previously known lighting device there is the possibility of a particularly homogeneous, diffuse one Light distribution with which daylight-like effects can be achieved.
- the light bag e.g. Sail
- spinnaker cloth As a material for the light bag, e.g. Sail, in particular also spinnaker cloth can be used, on the one hand the
- the sack is filled with the aid of a blower and corresponding gas inlet openings which can be connected to this blower.
- Valve for filling the sack can now either be attached to the sack itself or in the area of a holding device to carry out the filling.
- the filling process itself is not without problems.
- relatively small pressure differences are enough to tighten the sack
- the sealing area between the fastening-side, open end of the airbag 10 and the holding device has also proven to be problematic, with the result that the airbags have to be refilled in many cases with interruptions during filming during filming.
- a likewise known lighting device according to DE i5 195 29 648 AI has a closed fluorescent screen surface which is inflated by a fan and illuminated by a light source located within the fluorescent screen surface.
- the umbrella itself is on a base or frame attached.
- the device there requires continuous operation of the fans, with the result that noise developments cannot be avoided and the disadvantages already mentioned above when using such a device for film and television recordings.
- a light diffuser consisting of a holding device and an at least partially detachably connected to the holding device.
- L5 use without filling or refilling activities, especially for film and television recordings.
- the basic idea of the invention is to apply a compressed gas to the holding device designed as an adapter ring.
- a first pressure sensor determines the internal pressure building up when the sack is fixed to the ring and delivers a shutdown signal when an adjustable or predeterminable maximum pressure value is reached, so that the filling of the
- the button can be activated manually for gas filling or gas refilling, whereby according to the invention an automatic quasi limit switch is provided.
- an automatic quasi limit switch is provided.
- Another 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.e. atmospheric pressure can be derived.
- the last-mentioned embodiment has the particular advantage that it is not necessary to correct the maximum pressure value, in particular when shooting at heights that deviate from normal zero. It has been shown that even relatively low filling pressures are sufficient for a taut shape of the sack when inflated and that higher pressure values do not bring any further advantages, but rather entail an increased risk of accidents. Since light diffusers of the type described can generally be used for mobile use and are used in very different locations, the automatic valve shutdown and pressure control on the basis of differential pressure values is particularly advantageous.
- a further compressed gas connection can be provided on the adapter ring for holding several light diffusers in series, so that only a central gas supply is required and the filling gas can be looped through analogously to the electrical supply of an assigned electrical headlight.
- the one or more pressurized gas connections can be connected via pressure hoses to a spatially remotely located pressure accumulator or a pressure compressor.
- a compressor In order to quickly empty the bags, which are preferably filled with air, a compressor can be switched from pressure generation to suction mode. In this way, time and thus costs can be saved in an advantageous manner when dismantling or converting the lighting devices. As mentioned, the compressed gas connections can also lead to a gas storage container. In this case, the on-site use of a compressor, especially under difficult local conditions, is not necessary. 5
- a blow-off valve with a large opening cross section can be provided on or in these.
- the adapter ring has circumferential beads with projections and recesses in a region on the bag side, these serving to fix a profile seal corresponding to the surface structure.
- the profile seal is now over the free end
- the sack is then placed with its opening side over the profile seal and pressure-tightly attached to the adapter ring by means of a tensioning ring or tensioning strap, but is detachably attached without further ado.
- the light diffuser 125 completed with a headlight 2 comprises an airbag 3 and a holding device 4 arranged between the headlight 2 and the bag 3 in the manner of an adapter ring.
- the holding device 4 can now be fastened with the headlight 2 via a flange-like extension 8, holding bracket 9 and ring 13.
- the headlamp 2 itself is pivotally fixed to a frame (not shown) via a bracket 10.
- a translucent disc 12 is fixed pressure-tight in the adapter ring 4, so that a corresponding airtight space results when the sack is mounted.
- a compressed gas connection 6 with an electronically operable valve for supplying gas is also arranged on the adapter ring 4.
- a second sensor 11 is used to detect the ambient pressure, so that a switch-off signal can be derived on the inside / outside on the basis of a differential pressure value.
- the electronic switching valve which can be implemented in combination with the compressed gas connection 6, can be activated manually for gas filling or gas refilling via a button (not shown).
- At least one circumferential bead 14 is embossed on the bag receiving side 16 of the adapter ring 4 and serves to receive a correspondingly shaped profile seal 5. The sack is then placed over the sack receiving side 16 and held releasably with the aid of a tensioning strap 17.
- valves of this type are known, for example, from inflatable boat technology, so that further explanations for this are unnecessary.
- the bag can at least partially be designed on the inside
- Light reflection zones or layers of color can be provided so that lighting effects can be optimized depending on the application.
- a valve with a large opening cross section or a screw opening is fitted in the adapter ring. This valve or opening is used for quick emptying of the sack, but can also be used for
- Pre-filling can be used with the help of a fan that can be connected there.
- the electrical control of the valves and the monitoring of the pressure by means of a pressure display can also be carried out centrally from a switching device.
- an electrical remote control unit can be formed, which preferably has an optical signal unit, for example in the form of an LED.
- the light diffuser presented makes it possible in a particularly simple and safe manner to fill an airbag, which is attached to a corresponding adapter ring, without the filling process itself having to be monitored in a complex manner at the location.
Landscapes
- General Engineering & Computer Science (AREA)
- 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)
- Air Bags (AREA)
- Bag Frames (AREA)
- Glass Compositions (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Liquid Crystal (AREA)
- Percussion Or Vibration Massage (AREA)
- Pipe Accessories (AREA)
Abstract
Description
Claims
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 true EP1194717A1 (en) | 2002-04-10 |
EP1194717B1 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) |
Families Citing this family (8)
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 |
DE102009010209A1 (en) | 2009-02-23 | 2010-09-02 | Licht-Technik Vertriebs Gmbh Hagenbach & Grill | light diffuser |
KR20140137403A (en) | 2012-03-01 | 2014-12-02 | 조나단 데이비드 첼프 | 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 |
CN108317459A (en) * | 2018-01-25 | 2018-07-24 | 孙学川 | A kind of intelligence night-light |
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 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 ES ES200101391U patent/ES1049443Y/en not_active Expired - Fee Related
- 2001-05-29 JP JP2002500150A patent/JP4616541B2/en not_active Expired - Fee Related
- 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 PT PT01936405T patent/PT1194717E/en unknown
- 2001-05-29 EP EP01936405A patent/EP1194717B1/en not_active Expired - Lifetime
- 2001-05-29 AT AT01936405T patent/ATE317092T1/en active
- 2001-05-29 ES ES01936405T patent/ES2258086T3/en not_active Expired - Lifetime
- 2001-05-29 DK DK01936405T patent/DK1194717T3/en active
Non-Patent Citations (1)
Title |
---|
See references of WO0192779A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20020191295A1 (en) | 2002-12-19 |
DE50108859D1 (en) | 2006-04-13 |
JP2003535440A (en) | 2003-11-25 |
DK1194717T3 (en) | 2006-05-29 |
US6683719B2 (en) | 2004-01-27 |
ATE317092T1 (en) | 2006-02-15 |
JP4616541B2 (en) | 2011-01-19 |
ES1049443U (en) | 2001-12-16 |
EP1194717B1 (en) | 2006-02-01 |
DE10028357A1 (en) | 2001-12-20 |
ES1049443Y (en) | 2002-04-16 |
ES2258086T3 (en) | 2006-08-16 |
CA2380654A1 (en) | 2001-12-06 |
WO2001092779A1 (en) | 2001-12-06 |
CA2380654C (en) | 2010-08-10 |
PT1194717E (en) | 2006-06-30 |
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