EP1001212A2 - Dispositif de blocage en position pour luminaire réglé automatiquement - Google Patents

Dispositif de blocage en position pour luminaire réglé automatiquement Download PDF

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Publication number
EP1001212A2
EP1001212A2 EP99308982A EP99308982A EP1001212A2 EP 1001212 A2 EP1001212 A2 EP 1001212A2 EP 99308982 A EP99308982 A EP 99308982A EP 99308982 A EP99308982 A EP 99308982A EP 1001212 A2 EP1001212 A2 EP 1001212A2
Authority
EP
European Patent Office
Prior art keywords
lighting fixture
yoke
head
fixture
locking mechanism
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.)
Withdrawn
Application number
EP99308982A
Other languages
German (de)
English (en)
Other versions
EP1001212A3 (fr
Inventor
Derek Nash
John W. Ii Lane
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.)
High End Systems Inc
Original Assignee
High End Systems Inc
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 High End Systems Inc filed Critical High End Systems Inc
Publication of EP1001212A2 publication Critical patent/EP1001212A2/fr
Publication of EP1001212A3 publication Critical patent/EP1001212A3/fr
Withdrawn legal-status Critical Current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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/007—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for shipment or storage
    • 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

Definitions

  • the present invention relates to lighting fixtures and specifically to a means of locking the moving parts of fixtures in a fixed position while the fixture is not in operation.
  • Automated lighting fixtures often include a means of controlling the position of the light beam projecting from the fixture by remote control.
  • the position of the light beam is controlled by a movable mirror which reflects the beam.
  • Other fixtures position the light beam by mounting the light source and optical components in a movable yoke.
  • Still other fixtures are hybrids of the moving mirror and moving yoke fixtures.
  • These lighting fixtures contain optical components for collecting the light from the light source into a light beam and modifying that light beam. Frequently, these components also have moving elements that can be remotely controlled. Different types of motors are used in various fixtures to drive the moving components of these fixtures. Many of these fixtures employ the use of motor driver circuitry which is typically controlled by microprocessor circuitry.
  • each lighting fixture is removed from the stage and often packaged in a road case which includes foam protection to keep the fixture in a set position during travel.
  • a road case which includes foam protection to keep the fixture in a set position during travel.
  • fixtures travel without a case. In both scenarios, the moving parts of the fixture make moving and packing the fixture difficult.
  • a key can be used to mechanically lock the fixture into a desired position. In this position, the fixture can be properly loaded into a road case or moved from one position on a stage to another.
  • this method of maintaining fixture position requires that a lighting technician physically lock each fixture into position and keep track of a key to do so. It also results in significant inconvenience if some of the fixtures have not been unlocked and are installed in places that are not within easy reach.
  • Fig. 1 illustrates a typical moving yoke automated light fixture 8.
  • These fixtures typically include: a head 10 which includes the light source (not shown) and various optical components (not shown) for modifying the light generated by the light source, a yoke 20 and a base 30.
  • the fixture head 10 is held between a pair of yoke arms 22 and 24, centered about a tilt axis 26.
  • the yoke cross-member 28 is attached to the base 30, centered about a pan axis 32.
  • these fixtures employ electric motors (not shown) to rotate the fixture head 10 about the tilt axis 26 and rotate the yoke 20 about the pan axis 32.
  • these motors are driven by motor driver circuitry (not shown) and software located in either the base 30 or in the yoke 20.
  • the yoke 20 or the base 30 also typically includes communication and control circuitry (not shown) for controlling the motor drivers (not shown) and for communicating with a remotely located controller (not shown) though a communications link 38.
  • Fig 2 illustrates the major components of a solenoid 60. Solenoids convert electrical energy into force and motion.
  • the solenoid in Fig. 2 is in a non-energized state where no power is supplied to the power inputs 70.
  • the solenoid capsule 68 is maintained in a state extended from the solenoid chamber 66 by a spring 80. When electric power is applied to power inputs 70, electric current flows though the coils 65 energizing the coils.
  • Fig 3 illustrates the solenoid 60 with power supplied. The energized coils create an electromagnetic force 62 around the coil. The magnetic force 62 retracts the capsule 68 into the solenoid chamber 66, compressing the spring 80.
  • the capsule 68 When electromagnetic force is removed, the capsule 68 extends out of the solenoid chamber 66 by the force of the spring.
  • the spring resists movement of the capsule 68 into the solenoid chamber 66 without a greater opposing force.
  • the design makes use of a compression spring or a leaf spring.
  • the design can make use of a tension spring.
  • the embodiment shown uses a spring internal to the solenoid.
  • the spring can be configured to be external to the solenoid.
  • other components such as lever arms could be incorporated into the design. The objective is to provide tension between an energized open position and an un-energized locked position.
  • Figs. 4 and 5 illustrate a suitable implementation of the of a moving yoke fixture 8 in its shipping position in which the fixture is parked.
  • This position is a typical desired position of a fixture in a road case because the fixture is in its most compact form to minimize the volume of the road case.
  • the width of the yoke 20 is aligned parallel to the width of the base 36 and the length of the head 10 is aligned perpendicular to the base 30.
  • the shipping position is ideal because the width and length of the road case are determined by the base which also provides balance and support for the yoke 20 and head 10 suitable for travel without a road case. Other positions are also possible and in some cases might be preferable.
  • the solenoid capsule 68 is shown in the arm 22 of the fixture 8 in its extended state where the solenoid coils (not shown) are not energized.
  • the solenoid capsule 68 is shown extended into an aperture 72 in the head 10 of the fixture. In this state the head of the fixture is prevented from tilting.
  • the solenoid capsule 68 is shown in its retracted state where the solenoid coils (not shown) are energized.
  • the solenoid capsule 68 is shown retracted from the aperture 72 in the head 10 of the fixture.
  • the solenoid 60 When power (not shown) is applied to the fixture 8, the solenoid 60 is energized causing it to disengage. With the solenoid disengaged the fixture head can now be freely moved by the motor (not shown) tasked with this function.
  • the solenoid capsule 68 When power to the solenoid 60 is cut off, the solenoid capsule 68 is extended and then the head 10 can be tilted until the capsule 68 engages the aperture 72 in the head 10 holding the head 10 fixed in its shipping position
  • Figs. 6 and 7 only illustrated a locking mechanism for the tilting of the head of a moving yoke fixture.
  • the invention can also be applied to the panning of the yoke, and also to the movement of other components such as focusing lens assemblies or other moving components of the fixture.
  • the embodiment illustrated shows the solenoid mounted to the fixed component (the yoke arm in this case) and the aperture is placed on the moving part (the head in this case), the invention could be implemented in reverse mounting the solenoid on the moving part and placing the aperture on a fixed part.
  • Figs. 8 and 9 illustrate the extended solenoid removes a stop from a locking aperture.
  • Fig. 8 illustrates a solenoid 60 with a solenoid capsule 68 in its retracted state where the solenoid coils (not shown) are not energized.
  • the stop 78 is extended into the apertures 74 and 76 to hold the head 10 in its shipping position.
  • Fig. 9 illustrates the solenoid in its extended state where the solenoid coils are energized.
  • the stop 78 is retracted from the apertures 74 and 76 by the force of the solenoid capsule 68 against the stop 78.
  • the tension to provide a locked position could be provided by a tension spring 80 between the stop 78 and yoke arm 22; it could also be provided by the tension spring 80 in the solenoid chamber 66 (not shown).
  • the locking mechanism is directly connected to a suitable power supply for driving the solenoid whenever power is supplied to the fixture.
  • a suitable power supply for driving the solenoid whenever power is supplied to the fixture.
  • the position of the locking part needs to be moved by some external force to the locking position so that the extended solenoid capsule can engage the locking position aperture 72.
  • manual movement by a stage hand or operator would be suitable.
  • t he solenoid 60 is connected to a suitable power supply 100 through an electronic switch 102 which can be controlled by the light fixture's microprocessor circuitry 104. In this way the microprocessor (not shown) can control the energizing the solenoid 60 to unlock the fixture.
  • Fig. 11 is an illustration of the flowchart of a software routine for an automated shutdown locking system.
  • the fixture receives instructions to power down from a signal through the communications link 38. In powering down, the lamp is shut off and other components of the fixture are readied for shutdown.
  • the power to the solenoids is shut off such that the solenoid capsule is allowed to extend from the solenoid.
  • the drive mechanism is engaged for moving parts that lock to a home position whereby the solenoid capsule engages into an aperture in the moving part. It may also be desirable to drive the moving part back and forth repeatedly over a range of motion near the locking position to ensure the locking mechanism engages the locking aperture.
  • the fixture is shutdown to stop receiving power or a display is shown that the fixture is parked and ready to be disconnected from power.
  • the solenoid may be of the type that is not spring loaded but rather has at least two fixed positions: retracted and extended. Rather than a spring to provide tension to drive the capsule to a particular position, these solenoids apply tension to the capsule to restrict it from moving from its existing position. These solenoids may operate by applying one polarity signal to the coil to put the capsule in a retracted position and the opposite polarity to put the capsule in an extended position. Other solenoids of this type utilize two different coils: one coil is energized to retract the capsule, the other coil is energized to extend the capsule. With both of these solenoids, the capsule will remain in the set position after the current is removed from the solenoid.
  • the solenoid can be replaced by a motor such as a stepper motor, a servomotor or a DC motor that drives a mechanism for locking the moving part in place.
  • Figs. 12 and 13 illustrate examples of a motor driven system.
  • the motor 110 rotates a spur gear 112 which meshes with a toothed section of a chamber 114.
  • a spring 118 can be employed for motors that do not return to locked position on power down to return the chamber 114 to a locked position.
  • the motor 110 actuates an arm 116 which positions the chamber 120 into a locked and unlocked position.
  • a spring 118 may be employed to ensure that the chamber remains in a locked position when no power is supplied to the fixture.
  • actuating the motor can cause the locking chamber to lock and or unlock the movement of a moving part 10.
  • suitable control circuitry and software of various motor types is well known with skill of an artisan in the automated lighting art.
EP99308982A 1998-11-12 1999-11-11 Dispositif de blocage en position pour luminaire réglé automatiquement Withdrawn EP1001212A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10801498P 1998-11-12 1998-11-12
US108014P 1998-11-12
US16444599P 1999-11-09 1999-11-09
US164445P 1999-11-09

Publications (2)

Publication Number Publication Date
EP1001212A2 true EP1001212A2 (fr) 2000-05-17
EP1001212A3 EP1001212A3 (fr) 2001-09-26

Family

ID=26805442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99308982A Withdrawn EP1001212A3 (fr) 1998-11-12 1999-11-11 Dispositif de blocage en position pour luminaire réglé automatiquement

Country Status (1)

Country Link
EP (1) EP1001212A3 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6866402B2 (en) 2003-02-26 2005-03-15 Richard S. Belliveau Manual and automatic locking system for a multiparameter lighting fixture
US7699506B2 (en) 2006-09-08 2010-04-20 Martin Professional A/S Silent moving head projector
WO2010145658A1 (fr) * 2009-06-18 2010-12-23 Martin Professional A/S Appareil d'éclairage intelligent à fonction projecteur de poursuite manuel
WO2011100972A1 (fr) * 2010-02-16 2011-08-25 Martin Professional A/S Dispositif d'éclairage ayant des parties de type enveloppe de culasse à verrouillage
WO2013036876A2 (fr) * 2011-09-08 2013-03-14 Golight, Inc. Boîtier de dispositif optique rotatif et plate-forme de montage
CN104075228A (zh) * 2013-03-26 2014-10-01 海洋王（东莞）照明科技有限公司 摇头灯及其摇头结构
USD734521S1 (en) 2013-08-26 2015-07-14 Golight, Inc. Searchlight
USD734887S1 (en) 2013-08-27 2015-07-21 Golight, Inc. Searchlight
IT201700007894A1 (it) * 2017-01-25 2018-07-25 Clay Paky Spa Proiettore
CN112443821A (zh) * 2019-09-03 2021-03-05 罗布照明公司 用于自动灯具的制动系统
US10969087B1 (en) 2019-10-31 2021-04-06 Guangzhou Haoyang Electronic Co., Ltd. Stage light having unlockable brake motor
EP3816506A1 (fr) * 2019-10-31 2021-05-05 Guangzhou Haoyang Electronic Co., Ltd. Éclairage de scène doté d'un moteur à frein non verrouillable
US11703213B2 (en) 2019-09-03 2023-07-18 Robe Lighting S.R.O. Braking system for an automated luminaire

Family Cites Families (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
DE2127552A1 (de) * 1971-06-03 1972-12-14 Wiesbaden Gmbh Maschf Vorrichtung zur Steuerung von beweglich aufgehängten Scheinwerfern für Vorfuhr- und Aufnahmeveranstaltungen, insbesondere in Fernseh- und Filmstudios
DE2651912A1 (de) * 1976-11-13 1978-05-18 Zeiss Ikon Ag In rasterdecken eingebaute leuchtensysteme
JP2700171B2 (ja) * 1989-02-07 1998-01-19 三信船舶電具株式会社 照明装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6866402B2 (en) 2003-02-26 2005-03-15 Richard S. Belliveau Manual and automatic locking system for a multiparameter lighting fixture
US7699506B2 (en) 2006-09-08 2010-04-20 Martin Professional A/S Silent moving head projector
WO2010145658A1 (fr) * 2009-06-18 2010-12-23 Martin Professional A/S Appareil d'éclairage intelligent à fonction projecteur de poursuite manuel
US8449141B1 (en) 2009-06-18 2013-05-28 Martin Professional A/S Intelligent light fixture with manual follow spot function
WO2011100972A1 (fr) * 2010-02-16 2011-08-25 Martin Professional A/S Dispositif d'éclairage ayant des parties de type enveloppe de culasse à verrouillage
USD667582S1 (en) 2010-02-16 2012-09-18 Martin Professional A/S Light fixture with moving head
US8708535B2 (en) 2010-02-16 2014-04-29 Martin Professional A/S Illumination device with interlocked yoke shell parts
WO2013036876A2 (fr) * 2011-09-08 2013-03-14 Golight, Inc. Boîtier de dispositif optique rotatif et plate-forme de montage
WO2013036876A3 (fr) * 2011-09-08 2013-05-02 Golight, Inc. Boîtier de dispositif optique rotatif et plate-forme de montage
US9539952B2 (en) 2011-09-08 2017-01-10 Golight, Inc. Rotatable optical device housing and mounting platform
CN104075228B (zh) * 2013-03-26 2015-08-05 海洋王（东莞）照明科技有限公司 摇头灯及其摇头结构
CN104075228A (zh) * 2013-03-26 2014-10-01 海洋王（东莞）照明科技有限公司 摇头灯及其摇头结构
USD734521S1 (en) 2013-08-26 2015-07-14 Golight, Inc. Searchlight
USD734887S1 (en) 2013-08-27 2015-07-21 Golight, Inc. Searchlight
IT201700007894A1 (it) * 2017-01-25 2018-07-25 Clay Paky Spa Proiettore
CN112443821A (zh) * 2019-09-03 2021-03-05 罗布照明公司 用于自动灯具的制动系统
EP3789669A1 (fr) * 2019-09-03 2021-03-10 ROBE lighting s.r.o. Système de freinage d'un luminaire automatisé
US10969091B2 (en) 2019-09-03 2021-04-06 Robe Lighting S.R.O. Braking system for an automated luminaire
CN112443821B (zh) * 2019-09-03 2022-08-30 罗布照明公司 用于自动灯具的制动系统
US11703213B2 (en) 2019-09-03 2023-07-18 Robe Lighting S.R.O. Braking system for an automated luminaire
US10969087B1 (en) 2019-10-31 2021-04-06 Guangzhou Haoyang Electronic Co., Ltd. Stage light having unlockable brake motor
EP3816506A1 (fr) * 2019-10-31 2021-05-05 Guangzhou Haoyang Electronic Co., Ltd. Éclairage de scène doté d'un moteur à frein non verrouillable

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