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EP1546605A1 - Projecteur - Google Patents

Projecteur

Info

Publication number
EP1546605A1
EP1546605A1 EP03720260A EP03720260A EP1546605A1 EP 1546605 A1 EP1546605 A1 EP 1546605A1 EP 03720260 A EP03720260 A EP 03720260A EP 03720260 A EP03720260 A EP 03720260A EP 1546605 A1 EP1546605 A1 EP 1546605A1
Authority
EP
European Patent Office
Prior art keywords
housing
headlight
ventilation shaft
air outlet
outlet opening
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
Application number
EP03720260A
Other languages
German (de)
English (en)
Other versions
EP1546605B1 (fr
Inventor
Thomas DÖRNER
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.)
Arnold and Richter Cine Technik GmbH and Co KG
Original Assignee
Arnold and Richter Cine Technik GmbH and Co KG
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 Arnold and Richter Cine Technik GmbH and Co KG filed Critical Arnold and Richter Cine Technik GmbH and Co KG
Publication of EP1546605A1 publication Critical patent/EP1546605A1/fr
Application granted granted Critical
Publication of EP1546605B1 publication Critical patent/EP1546605B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40Lighting for industrial, commercial, recreational or military use
    • F21W2131/406Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios

Definitions

  • the invention relates to a headlamp, in particular a stage, studio, film or television headlamp according to the preamble of claim 1.
  • Headlights of this type have a light source arranged on one or two sides in a headlight housing, which consists of a lamp or a burner, for example a discharge lamp in the form of a metal halide lamp or a high-pressure sodium lamp or the like, and which includes With the help of a reflector also arranged in the headlight housing, the light radiates in one direction from an opening in the headlight housing.
  • the headlight housing is closed at the front with a preferably transparent cover element in the form of a protective pane or a lens held in a frame or a holder.
  • non-visible heat radiation is also emitted in the infrared spectral range, which has to be dissipated to prevent overheating of the components such as light source, reflector, light source base and supply lines arranged inside the headlight housing.
  • the components such as light source, reflector, light source base and supply lines arranged inside the headlight housing.
  • housing openings for dissipating the heat load occurring in the interior of the headlight housing are undesirable.
  • Heat dissipation is therefore essentially only possible by means of a correspondingly enlarged surface area of the headlight housing, for example made of aluminum castings and extruded aluminum profiles, which is brought about by corresponding cooling fins projecting from the contour of the headlight housing.
  • a correspondingly enlarged surface area of the headlight housing for example made of aluminum castings and extruded aluminum profiles, which is brought about by corresponding cooling fins projecting from the contour of the headlight housing.
  • such an enlarged surface of the headlamp housing also leads to an overall enlargement of the headlamp and thus prevents a compact design of a headlamp, in particular a headlamp of great performance.
  • Blowers used to dissipate the heat load are undesirable in many applications because of the noise involved.
  • the object of the present invention is to provide a headlamp with a high light output with a compact design, which dissipates the heat radiation emitted by the light source of the headlamp without emitting light to the surroundings of the headlamp outside the front.
  • the solution according to the invention creates a headlight which, even with high light output and the associated high heat emission from the light source of the headlight, has an extremely compact design and dissipates the heat radiation emitted by the light source without noise and without undesired light emission from the headlight housing.
  • the solution according to the invention is based on the consideration of dissipating the heat radiation emitted by the light source of the headlight by means of increased supply of cooling air by convection.
  • a targeted cooling air flow is achieved so that no local heat build-up can occur and the cooling air flow as a whole ensures a uniform heat dissipation.
  • the ventilation shaft can optionally be integrated into the housing wall of the headlight housing, inserted into an opening in a housing wall of the headlight housing, or placed on an opening in the housing wall of the headlight housing and connected to the housing wall.
  • the ventilation shaft can have an air outlet opening opening into one or more openings in the housing wall of the headlight housing and an air inlet opening projecting from the housing wall of the headlight housing, or can be inserted into the housing wall of the headlight housing in such a way that the air inlet opening protrudes from the housing wall of the headlight housing and the air outlet opening inside the Headlight housing protrudes or can be integrated into the housing wall of the headlight housing such that the air inlet opening is essentially flush with the housing wall and the air outlet opening is arranged inside the headlight housing.
  • a combination of all three arrangements of the ventilation shaft is suitable for controlled and optimal heat dissipation from the inside of the headlight housing, it being possible to optimally use different types of construction and arrangement of the ventilation shaft for the different housing walls.
  • the ventilation shafts preferably contain a plurality of ventilation channels separated by lamellae.
  • the formation of several ventilation channels separated from each other by fins enables, on the one hand, a controlled supply of cooling air to the individual areas inside the headlight housing and, on the other hand, a highly effective light barrier that blocks the escape of stray light from the interior of the headlight housing.
  • This effect is enhanced by a suitable choice of material and coloring or shaping of the slats, which are in particular black and made of a highly light-absorbing material.
  • the fins are designed and arranged in the ventilation shaft in such a way that the cooling air supplied via the ventilation shaft is effective in different areas inside the headlight housing.
  • the lamellae are preferably arranged at substantially equal distances from one another and from the wall of the ventilation shaft and have at least one bend or deflection within the ventilation shaft.
  • the lamellae are arranged on the side of the air inlet opening and / or air outlet opening perpendicular to the air inlet opening and / or air outlet opening.
  • the slats on the side of the air inlet opening and / or the air outlet opening are arranged at an angle to the air inlet opening or air outlet opening.
  • the fins at the air outlet opening can have an air baffle protruding beyond the air outlet opening, which serves for the targeted flow guidance of the cooling air.
  • ventilation shafts can be arranged on both side walls and / or on the front and rear side walls and / or on the underside of the headlight housing.
  • the air outlet opening opens into the interior of the headlight housing in the immediate vicinity of the light source or the light source base.
  • FIG. 1 is a perspective view of a compact headlamp with part of the light source housing and a plurality of ventilation shafts
  • Fig. 2 shows a longitudinal section through the headlight housing according to FIG. 1 and
  • FIG. 3 shows a cross section through the headlight housing according to FIG. 1.
  • 1 shows a perspective view of part of a headlamp with a lower part of a headlamp housing 1, in which a light source 2, which is plugged into a light source base 5 connected to the headlamp housing 1, and a reflector 3, which is also connected to the headlamp housing 1 attached reflector holder 4 is connected, are arranged.
  • the light source 2 designed as a lamp or burner, the reflector 3 and the reflector holder 4 are surrounded by an upper, usually cylindrical headlight housing part connected to the lower part of the headlight housing 1, on the front side of which a cover element in the form of a glass pane or lens is arranged is and the end opposite the cover is completed.
  • the upper headlight housing part is usually profiled in order to enlarge the heat-emitting surface.
  • the lower headlight housing 1 is essentially cuboid and has two parallel side walls 11, 12, a front and rear side wall 13, 14 and an underside 15.
  • the lower headlight housing 1 is connected to the upper headlight housing part, not shown, via a plurality of connecting elements on the front and rear side walls 13, 14 or the side walls 11, 12.
  • the headlight housing 1 has a plurality of ventilation shafts 61 to 63 and ventilation shafts 64, 65 which can be seen in FIG. 2 and via which cooling air is conducted into the interior of the headlight housing 1.
  • the cooling air passes through air inlet openings 71 to 73 (FIGS. 2 and 3) of the ventilation shafts 61 to 65 arranged outside the headlight housing 1 and to air outlet openings 81 to 83 opening into the interior of the headlight housing 1, of which the air outlet opening in the perspective illustration according to FIG. 1 83 one of the ventilation shafts can be seen.
  • FIG. 2 through the headlight housing 1 according to FIG. 1 and the cross section shown through FIG. 3 through the headlight housing 1 according to FIG. 1 provide further details of the design of the ventilation shafts 61 to 65 and the cooling air duct.
  • Fig. 2 shows in longitudinal section of the headlight housing 1, a front ventilation shaft 63 and rear ventilation shaft 64 and a ventilation shaft 65 arranged on the underside of the headlight housing 1 the front ventilation shaft 63 and the rear ventilation shaft 64 are inserted into the front wall 13 and rear wall 14 of the headlight housing 1 such that the air inlet openings 72 are arranged at an angle to the front wall 13 and rear wall 14 outside the surface of the front wall 13 and rear wall 14, while the Air outlet openings 82 are arranged in the interior of the headlight housing 1 and run essentially parallel to the course of the front wall 13 and rear wall 14.
  • the ventilation shaft 65 arranged on the underside 15 of the headlight housing 1 is integrated into the underside 15 of the headlight housing 1 such that the air inlet opening 73 of the ventilation shaft 65 is flush with the wall surface of the underside 15, while the air outlet opening 83 projects into the interior of the headlight housing 1 and is arranged there adjacent to the light source 2.
  • the cross section shown in FIG. 3 through the headlight housing 1 shows the ventilation shafts 61, 62 arranged on the side walls 11, 12 of the headlight housing 1, the air inlet openings 71 of which project substantially perpendicularly from the side walls 11, 12, while the air outlet openings 81 of the ventilation shafts 61, 62 adjoin openings in the side walls 11, 12.
  • the trapezoidal ventilation shafts 61, 62 can be formed as part of the side walls 11, 12 or can be placed on the side walls 11, 12 with an opening in a suitable manner, plugged in or connected to the side walls 11, 12 by screw or clip connections.
  • a plurality of fins 7 arranged parallel to one another are provided in the interior of the ventilation shafts 61 to 65 and are arranged at equal distances from one another and to the side walls of the ventilation shafts 61 to 65 ,
  • the light-absorbing lamellae 7 are bent so that they have a first section 91 (FIG. 3) adjoining the air inlet opening 71 to 73 and a second section 92 adjoining the air outlet opening.
  • the lamellae 9 can protrude beyond the air outlet openings 81 and there an air bend section 94, 96 which is bent off again or one with the second bend. cut 92 form aligned air guide section 93, 95.
  • This shape of the lamellae 9 prevents vagabond light from escaping from the interior of the headlight housing 1 and ensures a cooling air flow which causes a uniform distribution of the cooling air inside the headlight housing 1, which is due to the cross-sectional view according to FIGS 3 airflow arrows L1 to L5 are shown.
  • FIG. 2 shows an air duct in the front and rear ventilation shafts 63, 64 caused by the fins 9, which is directed in such a way that the cooling air flow L3, L4 is evenly staggered in the longitudinal direction of the headlamp housing 1 and distributed in the interior thereof.
  • the air guide sections 95, 96 of the slats 9 provided in the area of the air outlet openings 82 are designed such that the air guide section 95 of the slat adjacent to the underside 15 of the headlight housing essentially runs horizontally following the second slat section, while the distance between the slats increases 9 from the underside 15 of the headlight housing an increasingly stronger kinking of the air guide sections 96 of the slats is provided.
  • the ventilation shaft 65 arranged on the underside 15 of the headlamp housing 1 contains lamellae 9 which open into the underside 15 of the headlamp housing 1 at an angle to the plane of the underside 15, while in the region of the air outlet opening they run essentially perpendicular to the underside 15 of the headlamp housing 1.
  • a staggered arrangement with respect to the plane of the light source 2 results in a staggered fan of air L5 in front of the light source 2, which directs the infrared radiation emitted by the light source 2 directly to the upper part of the headlight housing.
  • the ventilation shafts 61, 62 arranged on the side walls 11, 12 of the headlight housing 1 have a plurality of fins 9 which are arranged parallel to one another and whose sections 91 adjacent to the air inlet opening 71 run parallel to the side walls 11, 12, while those leading to the air outlet opening 81 Sections 92 of the slats 9 run obliquely to the side walls 11, 12 and are adapted at an angle to the top of the wall of the ventilation shaft 61, 62.
  • the air guide sections 93, 94 of the fins 9 provided in the area of the air outlet openings 81 are also oriented such that an effective distribution of the cooling air flows L1, L2 is effected.
  • the upper lamella has a section 93 aligned with the second section 92 of the lamella 9, while the slats below it have a further bent section 94 as an air guiding section, which projects essentially perpendicularly from the cross-sectional area of the air outlet opening 81.
  • the air guide arrows L1, L2 of the cooling air shown in FIG. 3 illustrate the air flow caused by this shape and arrangement of the fins 9 or ventilation shafts 61, 62, which causes the air flow to be distributed uniformly over the cross-sectional area of the headlight housing 1, so that the different areas inside the headlight housing 1 are uniform be flowed through with cooling air.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
EP03720260A 2002-09-20 2003-03-31 Projecteur Expired - Lifetime EP1546605B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20214874U 2002-09-20
DE20214874U DE20214874U1 (de) 2002-09-20 2002-09-20 Scheinwerfer
PCT/DE2003/001116 WO2004029507A1 (fr) 2002-09-20 2003-03-31 Projecteur

Publications (2)

Publication Number Publication Date
EP1546605A1 true EP1546605A1 (fr) 2005-06-29
EP1546605B1 EP1546605B1 (fr) 2008-08-06

Family

ID=29432793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03720260A Expired - Lifetime EP1546605B1 (fr) 2002-09-20 2003-03-31 Projecteur

Country Status (7)

Country Link
US (1) US20060044777A1 (fr)
EP (1) EP1546605B1 (fr)
CN (1) CN1682069A (fr)
AT (1) ATE403828T1 (fr)
DE (2) DE20214874U1 (fr)
RU (1) RU2005107783A (fr)
WO (1) WO2004029507A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005029671A1 (de) 2005-06-22 2006-12-28 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Kühlsystem für einen Scheinwerfer
DE202005013244U1 (de) * 2005-08-18 2005-12-01 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Kühlsystem für einen Scheinwerfer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1758290A (en) * 1928-06-29 1930-05-13 Mccormack William Eugene Lantern body for cinematograph and other projection apparatus
US2101638A (en) * 1937-03-02 1937-12-07 Brenkert Light Projection Comp Ventilating system for arc lamps
US2257232A (en) * 1939-07-21 1941-09-30 Bausch & Lomb Optieal Company Light projector
US2287328A (en) * 1941-02-03 1942-06-23 Bardwell & Mcalister Inc Studio spot lamp
US2518282A (en) * 1946-12-10 1950-08-08 Hobart Mfg Co Lamp housing
DE1792109U (de) * 1959-04-11 1959-07-16 Schroeder & Co G M B H Leuchte fuer hochdruck- quecksilberdampflampe.
FR2184534B1 (fr) * 1972-05-19 1974-09-27 Commissariat Energie Atomique
US4658338A (en) * 1985-07-03 1987-04-14 Quartzcolor Ianiro S.P.A. Lighting projectors with an intensified and accelerated air flow cooling system for photographic and motion picture studios
US4974132A (en) * 1990-01-22 1990-11-27 Daniel Naum Light trap for arc lamp ventilating system
US5172975A (en) * 1992-04-27 1992-12-22 Mole-Richardson Co. Light assembly with ventilated housing
KR100601639B1 (ko) * 2003-06-24 2006-07-14 삼성전자주식회사 화상투사장치

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004029507A1 *

Also Published As

Publication number Publication date
RU2005107783A (ru) 2006-01-20
DE50310290D1 (de) 2008-09-18
EP1546605B1 (fr) 2008-08-06
WO2004029507A1 (fr) 2004-04-08
ATE403828T1 (de) 2008-08-15
US20060044777A1 (en) 2006-03-02
CN1682069A (zh) 2005-10-12
DE20214874U1 (de) 2003-11-06

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