EP0025593A2 - Dispositif de réglage à distance d'un projecteur de scène - Google Patents

Dispositif de réglage à distance d'un projecteur de scène Download PDF

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Publication number
EP0025593A2
EP0025593A2 EP80105436A EP80105436A EP0025593A2 EP 0025593 A2 EP0025593 A2 EP 0025593A2 EP 80105436 A EP80105436 A EP 80105436A EP 80105436 A EP80105436 A EP 80105436A EP 0025593 A2 EP0025593 A2 EP 0025593A2
Authority
EP
European Patent Office
Prior art keywords
toothed belt
motor
belt pulley
shaft
drive
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.)
Ceased
Application number
EP80105436A
Other languages
German (de)
English (en)
Other versions
EP0025593A3 (fr
Inventor
Johann Bischl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0025593A2 publication Critical patent/EP0025593A2/fr
Publication of EP0025593A3 publication Critical patent/EP0025593A3/fr
Ceased legal-status Critical Current

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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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/08—Controlling the distribution of the light emitted by adjustment of elements by movement of the screens or filters
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/15—Adjustable mountings specially adapted for power operation, e.g. by remote control
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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 drive device for remote control of the adjustment movements of a stage spotlight, in which the adjustment member to be actuated, which is connected to the spotlight, can be rotated by means of an electric motor, in which an actual value can be generated via the actual angular position of the adjustment member by a feedback potentiometer coupled to the adjustment member and in which a control circuit for comparing the actual value with a set value that can be set on the control circuit is provided, the motor being controllable by the control circuit in such a way that the actual value steadily approximates the set value and wherein the motor is stopped when the actual value is equal to the target value.
  • a DC geared motor which rotates the adjusting element to be actuated into a different angular position via a downstream reduction gear.
  • a feedback potentiometer is connected to the adjusting element via a gear mechanism and generates an actual value for the moment angular position of the adjusting member. This actual value is compared with a predetermined target value by a control circuit. In accordance with the difference between the actual value and the target value, the motor is controlled so that the actual value steadily approaches the target value until both are of the same size. If this is the case, the motor is stopped or stopped.
  • Such a known device has some disadvantages, which have an adverse effect in particular both on the production and maintenance costs and on the operational properties.
  • the gear unit via which the feedback potentiometer is actuated, works smoothly and largely without play. This smoothness and freedom from play must be maintained over a long period of time in a wide temperature range.
  • the geared motor used in connection with the known device and possibly also the additional gearwheel gearbox generate strong noises which are very disruptive in studio and stage operation. So rigid mechanical obstacles to movement, such. B.
  • a slip clutch must be provided.
  • a disadvantage of such a slip clutch is that a defined limit torque with sufficient long-term constancy can hardly be achieved.
  • the object of the present invention is to provide a drive device for remote control of the United States Specify the movements of a stage spotlight, which is extremely simple and can work flawlessly and quietly over a wide temperature range and over a long period.
  • a drive device for remote control of the adjustment movements of a stage spotlight which is characterized according to the invention in that a gearless motor is provided as the motor, the output of which is coupled to the adjusting member via a flat belt drive, optionally a toothed belt drive, and a worm gear is, and that the feedback potentiometer is connected to the adjusting member via a further toothed belt drive.
  • a major advantage of this drive device is that it ensures good caster accuracy and a pendulum-free running of the drive into the desired position, because the tension of the toothed belt can be optimally adjusted without difficulty in terms of smoothness and freedom from play.
  • this voltage is only slightly dependent on the temperature and remains unchanged over a long period.
  • the noise development of the belt drives is advantageously very low.
  • the flat belt drive consists of a flat belt pulley which is positively connected to the output of the motor, a pulley arranged positively on an intermediate shaft and a flat belt connecting the flat belt pulley and the pulley.
  • a preferred toothed belt drive consists of a toothed belt pulley arranged in a form-fitting manner on the intermediate shaft, a toothed belt pulley arranged in a form-fitting manner on a worm shaft, and a toothed belt connecting the toothed belt pulley and the toothed belt pulley.
  • a preferred worm gear consists of a worm arranged positively on the worm shaft and a worm wheel positively connected to a shaft of the adjusting member.
  • connecting toothed belt .A preferably toothed belt drive for actuating the feedback potentiometer in a connected with the worm shaft or the shaft of the adjusting belt pulley, a positively connected with the shaft of the feedback potentiometer and a Z ahnriemenrolle this toothed belt pulley and that the toothed belt pulley.
  • the belt drives described above and the worm gear described above are particularly simple and advantageous with regard to their construction.
  • a multi-turn spiral potentiometer is provided as the feedback potentiometer. With the help of this spiral potentiometer, a high angular resolution can advantageously be achieved.
  • electrical switching elements are provided to limit the adjustment range of the adjustment element. It is advantageously achieved by means of these switching elements that the drive motor actuating the adjusting element is automatically stopped when the adjusting element reaches the limits of its adjustment range. Mechanical blocking is thereby avoided. In addition, the engine, the belt and worm gears are protected without the need for a slip clutch.
  • the motor is preferably provided in the end positions of the adjustment range as non-contact switches that switch off as switching elements.
  • Such switches have the advantage that rigid mechanical obstacles to movement, such as stops, are not required.
  • the non-contact switches which are provided to limit the adjustment range are actuated by a permanent magnet which is provided on the surface of the toothed belt pulley which is located on the shaft of the adjustment member.
  • a permanent magnet which actuates the contactless switches.
  • the contactless switches advantageously switch the motor off when they are actuated by acting on the motor control.
  • the contactless switches interrupt an electrical supply line to the motor when they are actuated.
  • the non-contact switches can be bridged with diodes which have a polarity which enables the reversal of direction of a DC motor provided as a motor. In this way it is automatically caused that the motor changes its direction when a limit of the adjustment range of the adjustment member is reached.
  • the stage spotlight is designated 1 and rotatably mounted about a shaft 2 in the bracket 3.
  • the headlight 1 can be rotated or tilted about the shaft 2 by the drive 4 shown schematically on the holder 3.
  • the holder 3 is arranged on a drive device 5, which rotates the plate 7 and the holder 3 fastened thereon about the shaft 6. This rotation causes the light beam emanating from the headlight 1 to move in the horizontal direction.
  • a drive device 8 is shown schematically in FIG. 1, by means of which the diaphragm of the headlight 1 can be adjusted.
  • the present invention provides a drive device with the aid of which the movement processes described in connection with FIG. 1, namely the tilting operation (rotation about the shaft 2), the rotating operation (rotation about the shaft 6) and the adjustment of the cover of the headlight 1 can be executed.
  • a drive device according to the invention is first described below in connection with FIGS. 2 to 4, with the aid of which the stage spotlight can be rotated around the horizontal shaft designated by 2 in FIG. 1.
  • the drive device 4 for tilting is arranged in a housing 9 which is fastened to the holding device 3.
  • a gearless electric motor 10 which is preferably a DC motor, is provided. This motor 10 is attached to parts 11, 12, 13 and 14 of the housing in the manner shown in FIG. 2.
  • a flat belt roller 15 is positively connected to the output of the motor 10.
  • the flat belt roller 15 is coupled to a pulley 17 via the flat belt 16.
  • This pulley 17 is arranged positively on an intermediate shaft 18 which is rotatably mounted in the housing parts 19 and 20 , which are arranged in the manner shown in the figure and are spaced apart by parts 21 and 22.
  • a toothed belt roller 23 is also positively arranged, which is coupled via the toothed belt 24 to a toothed belt pulley 25.
  • the toothed belt pulley 25 is arranged in a form-fitting manner on a worm shaft 26 which is rotatably mounted in housing parts 27 and 28 in the manner shown in FIG. 2.
  • the worm 29 is positively provided, which interacts with a worm wheel 3o, which is shown in FIG. 2 by broken lines.
  • the worm wheel 3o is on the shaft 2 already described in connection with FIG. 1, about which the headlight 1 can be rotated in the vertical direction.
  • the headlight 1 connected to the shaft 2 is shown schematically by dash-dotted lines.
  • the toothed belt pulley 31 is coupled via a toothed belt 34 to a toothed belt roller 35 which is arranged in a form-fitting manner on the shaft of a feedback potentiometer 36 (FIG. 4).
  • the feedback potentiometer is arranged on the part 38 which, for example in the manner shown in FIG. 2, is firmly connected to the housing via the part 37.
  • FIG. 3 shows the section indicated in FIG. 2 along the line II-II. Details of FIG. 3 which have already been described in connection with the other figures have the corresponding reference numerals.
  • the worm wheel 3o and the toothed belt pulley 31 are fastened on the shaft 2, for example by nuts 39, 4o and a bushing 41.
  • the part of the housing 9 shown in FIG. 3 is fastened to the bearing part 3, for example by screws 42, 43.
  • the shaft 2 passing through this bearing part 3 is rotatably supported in the housing, for example by ball bearings 44.
  • FIG. 4 shows a top view of the feedback potentiometer 36. The direction of this top view is indicated by the arrow X in FIG. 2. Details of FIG. 4, which have already been explained in connection with FIG. 2, have the corresponding reference numerals.
  • switches 45, 46 which operate in a contactless manner are preferably arranged in the vicinity of the circumference of the toothed belt pulley 31.
  • a permanent magnet 47 is arranged on the toothed belt pulley 31. This moves with the rotating toothed belt pulley 31 and arrives at the limits of the adjustment range in the vicinity of the contactless switches 45 and 46.
  • a signal for the motor control is generated and the motor is switched off. It is also possible to interrupt the supply line to the motor 1o when the contactless switches 45, 46 are actuated.
  • the contactless switches 45 and 46 can also be bridged with diodes with a polarity which enables the reversal of direction of a direct current motor used as a motor 10. In this way, the motor is not stopped when one of the switches 45 or 46 is actuated, but rather changes its direction of rotation.
  • two permanent magnets 47, 48 are adjustably arranged on a circular path on the toothed belt pulley 31. 2, the second permanent magnet 48 is shown by dashed lines.
  • the adjustment range can be set as desired by moving the permanent magnets along the circular path.
  • a handwheel 49 can be arranged on the worm shaft 26.
  • the drive device according to the invention for tilting the headlamp 1, if this is necessary or desired, can be done manually be operated.
  • Such a handwheel is particularly important in the event of an electrical fault.
  • the structure of a drive device according to the invention for rotating the headlamp in the horizontal direction is described below in connection with FIGS. 5 and 6.
  • This drive device consists essentially of the same individual parts that have already been described in connection with the drive device for tilting the headlamp in the vertical direction.
  • the individual elements of the drive device for rotating the headlamp are therefore designated with the same reference numerals as the corresponding elements of the drive device for tilting the headlamp.
  • the housing of the drive device for rotating the headlight consists of a base part 50 and a cylindrical side part 51 connected to it. In the manner shown in FIG. 5, the electric motor 10 is fastened to this base part.
  • the intermediate shaft 18 is rotatably mounted, for example, in housing parts 52, 53 fastened to the base part 50.
  • the flat belt pulley 15 provided on the output of the motor 10 is coupled via the flat belt 16 to the flat belt pulley 17 fastened on the intermediate shaft 18.
  • the toothed belt roller 23, which is also fastened on this intermediate shaft 18, is coupled via the toothed belt 24 to the toothed belt pulley 25 fastened to the worm shaft 26.
  • the worm shaft 26 is rotatably supported in housing parts 54, 56 fastened to the base part 50.
  • the worm 29 attached to the worm shaft 26 meshes with a worm wheel 3o (FIG. 6), which is positively connected to a hollow shaft 6 in the manner shown in FIG. 6.
  • the worm wheel 3o is on a flange 57 of the hollow shaft 6 screwed.
  • the hollow shaft 6 is rotatably supported about an axis 58, which is fixedly connected to the housing of the drive device, for instance to the bottom part 5 0th This storage is effected in a manner known per se by ball bearings 6 0 , 59, locking rings 61, 62, 63 and a nut 64. At its upper end, the hollow shaft 6 is passed through an opening in an upper housing wall 65.
  • a plate 7 is connected to the upper end of the hollow shaft 6, for example screwed by the screws 66, 67. When the hollow shaft 6 is rotated, this plate 7 is rotated in the horizontal direction like a turntable.
  • the mounting device 3 for the stage spotlight 1 is arranged on the plate 7 and is firmly connected to the plate 7, for example by means of the screws 68, 69.
  • the toothed belt pulley 31 is also arranged in a form-fitting manner on the hollow shaft 6. For example, this is screwed to a flange 7o of the hollow shaft 6. Via the toothed belt 34, the toothed belt pulley 31 is coupled to the toothed belt roller 35, which is located in a form-fitting manner on the shaft of the feedback potentiometer (FIG. 5).
  • the contactless switches and at least one permanent magnet described in connection with the drive device for the tilting operation are also provided in the drive device for the rotary operation.
  • the contactless switches 45, 46 are arranged, for example, on the inner wall of the cylindrical housing wall of the housing of the drive device.
  • the permanent magnet 47 is on the outer wall of the cylindrical housing wall 51 is provided and connected via a connecting part 71 to the plate 7 such that it is guided along the outer wall of the housing wall 51 when this plate rotates at the height of the contactless switches 45, 46.
  • a second permanent magnet 48 can be provided in the device for the rotating operation.
  • the permanent magnets 47 and / or 48 are adjustably arranged on the circumference of the plate 7.
  • a handwheel can be provided on the worm shaft 26 for manual actuation of the drive device for turning, just as with the drive device for tilting.
  • FIGS. 7 to 9 a drive device is described in connection with FIGS. 7 to 9, which is provided for driving a diaphragm, in particular the iris diaphragm 73 of a stage spotlight.
  • this drive device 8 is arranged, for example, on the headlight 1.
  • the diaphragm is preferably actuated via an adjusting element 96, which can be a toothed segment, for example. The opening of the diaphragm is changed depending on the direction of rotation of this tooth segment.
  • the drive device 8 To actuate the adjusting member, the drive device 8, as can be seen in particular in FIG. 8, has a motor 75, on the output shaft of which a flat belt roller 76 is arranged in a form-fitting manner. This is coupled to a flat belt pulley 78 via a flat belt 77.
  • the flat belt pulley 78 is arranged in a form-fitting manner on the worm shaft 79.
  • the worm 9o is also arranged in a form-fitting manner on this worm shaft 79. This meshes with a worm wheel 91 arranged on the drive shaft 92.
  • this drive shaft 92 is rotatably mounted in a housing part 93.
  • a gear 94 is arranged in a form-fitting manner, which actuates the adjusting member or toothed segment 96 of the diaphragm 73 via an intermediate gear 95 for the purpose of reduction.
  • a toothed belt roller 8 0 is also positively arranged on the worm shaft 79, which is rotatably supported in the housing parts 86.
  • This toothed belt roller 8 0 is connected via a toothed belt 81 to a toothed belt pulley 84 arranged on the shaft 82 of the feedback potentiometer 83.
  • FIG. 9 shows a plan view of the drive device 8 shown in FIG. 7.
  • FIG. 8 shows a section through the device shown in FIG. 9 along the line VIII-VIII.
  • a stop pin 87 is preferably provided on the drive shaft 92 at the end opposite the end of this shaft 92 to which the gear 94 is attached see who rotates with the drive shaft 92 (Fig. 7).
  • microswitches 88, 89 are provided which can be actuated by the stop pin 87.
  • the drive motor 75 is preferably switched off when a microswitch 88, 89 is actuated.
  • the interruption contact can preferably be bridged with a diode of such polarity that a current flows in the opposite direction against the previously interrupted current and the drive can thus be moved back from the end position.
  • a handwheel 99 for manual actuation of the headlight can also, as has already been described in connection with the ' drive devices for tilting and rotating a stage spotlight, on the worm shaft 79 of the drive device for adjusting the cover of the spotlight Drive device may be provided.
  • the gear ratio can be changed by adding further gear stages.
  • Overload protection can come into play when the headlamp hits a fixed obstacle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Gear Transmission (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP80105436A 1979-09-13 1980-09-11 Dispositif de réglage à distance d'un projecteur de scène Ceased EP0025593A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792937141 DE2937141C2 (de) 1979-09-13 1979-09-13 Vorrichtung zum Einstellen der Kipplage und/oder der Schwenklage eines Bühnenscheinwerfers und/oder der Öffnungsweite einer an dem Bühnenscheinwerfer befindlichen Blende
DE2937141 1979-09-13

Publications (2)

Publication Number Publication Date
EP0025593A2 true EP0025593A2 (fr) 1981-03-25
EP0025593A3 EP0025593A3 (fr) 1981-05-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP80105436A Ceased EP0025593A3 (fr) 1979-09-13 1980-09-11 Dispositif de réglage à distance d'un projecteur de scène

Country Status (2)

Country Link
EP (1) EP0025593A3 (fr)
DE (1) DE2937141C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457735A1 (fr) * 2003-03-12 2004-09-15 Formas, S.A. Lampe pivotante motorisée

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325560A1 (de) * 1992-07-31 1994-02-03 Lichttechnik Vertriebsgesellsc Vorrichtung zum Wechseln eines Farbfilters für Beleuchtungseinrichtungen
DE19830169A1 (de) * 1998-07-06 2000-01-13 Hubert Kurz Badekabine mit Lichtwechselvorrichtung
DE10241899B4 (de) * 2002-09-06 2006-06-29 Adb-Ttv Technologies N.V./S.A. Beleuchtungsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097537A (en) * 1933-06-07 1937-11-02 Fred L Harter Remotely controlled spotlight
US3209136A (en) * 1963-05-28 1965-09-28 Fisher Jules Remote control movement system including a unit for variably positioning a light source device and a controller therefor
DE1597996A1 (de) * 1967-09-30 1970-09-03 Siemens Ag Anordnung zum Einstellen von Studioscheinwerfern
US4065806A (en) * 1974-06-28 1977-12-27 Sanshin Dengu Manufacturing Co., Ltd. Searchlight or the like

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH485167A (de) * 1968-03-29 1970-01-31 Siemens Ag Einrichtung zur Einstellung der Helligkeit von Lichtquellen in Bühnen- oder Studiobeleuchtungsanlagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2097537A (en) * 1933-06-07 1937-11-02 Fred L Harter Remotely controlled spotlight
US3209136A (en) * 1963-05-28 1965-09-28 Fisher Jules Remote control movement system including a unit for variably positioning a light source device and a controller therefor
DE1597996A1 (de) * 1967-09-30 1970-09-03 Siemens Ag Anordnung zum Einstellen von Studioscheinwerfern
US4065806A (en) * 1974-06-28 1977-12-27 Sanshin Dengu Manufacturing Co., Ltd. Searchlight or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1457735A1 (fr) * 2003-03-12 2004-09-15 Formas, S.A. Lampe pivotante motorisée

Also Published As

Publication number Publication date
DE2937141A1 (de) 1981-04-02
DE2937141C2 (de) 1985-10-10
EP0025593A3 (fr) 1981-05-27

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