WO2004027741A1 - Unite d'affichage - Google Patents

Unite d'affichage Download PDF

Info

Publication number
WO2004027741A1
WO2004027741A1 PCT/GB2003/004119 GB0304119W WO2004027741A1 WO 2004027741 A1 WO2004027741 A1 WO 2004027741A1 GB 0304119 W GB0304119 W GB 0304119W WO 2004027741 A1 WO2004027741 A1 WO 2004027741A1
Authority
WO
WIPO (PCT)
Prior art keywords
driving means
carrier
cog
pinion
indicia
Prior art date
Application number
PCT/GB2003/004119
Other languages
English (en)
Inventor
Ping Yan Lam
Original Assignee
Visomax Holdings Limited
Signwaves Limited
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 Visomax Holdings Limited, Signwaves Limited filed Critical Visomax Holdings Limited
Priority to AU2003267625A priority Critical patent/AU2003267625A1/en
Publication of WO2004027741A1 publication Critical patent/WO2004027741A1/fr

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position

Definitions

  • This invention relates to units with one or more lenses for displaying a sequence of images by displacing an indicia carrier in one direction and the opposite direction.
  • EP 1 001 401 Al also shows a prior art system for driving an indicia carrier sequentially in one direction and the opposite direction.
  • This system uses a conventional cam abutting directly against an indicia carrier edge to achieve its displacement in one direction and the opposite direction.
  • This system requires accurate engagement of the cam to the lower edge of the indicia carrier which is often difficult to achieve.
  • the indicia carrier itself will need to be particularly resistant to friction as the cam rotates against the indicia carrier. Such friction may result in a gradual erosion of the fragile indicia carrier edge. Gradual erosion will in turn cause the optical quality of that kind of display unit to gradually decrease and eventually the display unit may experience difficulties in displaying the series of images it is intended to display. This kind of problem will be accentuated as the size of the display unit is increased.
  • a display unit driven by a cam also requires the cam to carry the indicia carrier.
  • a cam would be, for example, incapable of driving a horizontal carrier displacement.
  • One of the objectives of the present invention is to provide an indicia carrier which has improved optical properties over the above described prior art systems.
  • a further aim of the present invention to provide a low consumption driving means employing relatively simple electric components.
  • a driving means which may be particularly compact and at the same time capable of driving a wide range of indicia carriers. It is envisaged that the teaching of the present invention may be employed to configure indicia carriers with vertical lines of action as well as those in any other direction such as the horizontal line of action. It will of course also be an objective of the invention to provide a system which is particularly durable without any undue friction between the indicia carrier and. its housing or its driving means.
  • the invention presents a unit for displaying a sequence of images and of a kind - generally known in itself- comprising one or more lenses through which an indicia carrier may be viewed and driving means adapted to displace said carrier sequentially in one direction and the opposite direction; characterised in that the driving means incorporates an automatically reversing gear to enable the driving means to operate in one direction only whilst generating the required sequential oppositely directed movements.
  • Supplying the driving means with an automatically reversing gear is advantageous because it allows the driving means to operate in one direction only which is particularly efficient in terms of its energy consumption.
  • This arrangement requires no complex electric system, for example, the most basic rotor may be used to drive the system.
  • Another advantage that flows from this configuration is that there needn't be a frictional engagement between the indicia carrier and the drive means so that improved optical images may be displayed.
  • the line of action of the driving means is essentially in line with the centre of gravity of the carrier.
  • the tolerances between the indicia carrier and its housing will vary from indicia carrier to the next and from one display unit to the next, by placing the line of action of the driving means essentially in line with the centre of gravity of the carrier the optical display quality is improved.
  • the driving means transmits its drive to the carrier through a carriage which acts to tend to spread the weight of the carrier evenly and/or to move the carrier uniformly.
  • the quality of the optics is further improved as the weight of the carrier is spread evenly and the motion of the carrier is uniform.
  • the driving means is a rack and pinion.
  • Figure 1 shows a side elevation of a display unit with one half of its support structure removed and a portion of its driving mechanism also removed.
  • Figure 2 shows a side elevation of the display unit as in Figure 1 with one half of its support structure removed but with the driving mechanism placed therein.
  • Figure 3 presents a schematic perspective view of a section of the driving means.
  • Figure 4 shows two stretched elevations of the driving means.
  • FIG. 5 presents a side elevation of the driving means.
  • Figure 1 presents a display unit 1 with a window 2 incorporating an array of lenses. These lenses form a horizontally extending linear array. While this particular type of array is the one illustrated, the invention envisages other configurations of arrays including honeycomb and spherical.
  • the display unit 1 comprises two overlapping windows (only window 2 being visible in the drawing).
  • the display unit's windows are held together at their upper corners by releasable means 3 which can be selected from a range of known alternatives.
  • the windows are sufficiently spaced from one another to allow an indicia carrier to be inserted between them.
  • a lid 4 is adapted to engage with releasable attachment means 3 in order to facilitate its straight forward removal to enable the operator to change the indicia carrier when required.
  • the group comprised of the indicia carrier, the windows and the lid are held by two mating halves such as the one presented in Figure 1 at 5. These halves are sufficiently spaced apart to accommodate the unit's driving means. Only part of such driving means has been illustrated in the figure: a battery compartment 6 and a carriage 7. The halves are constructed in such a way as to mount a stand 8 which allows pivoting about axis 9.
  • Carriage 7 has the particularity of running along tracks 10 and 11 which form part of half 5. These tracks are preferably parallel to and symmetrical about the centre of gravity of the carrier.
  • a projection 12 extends from the carriage 7 and comprises a group (not illustrated in the drawing) destined to receive a protruding extremity of the indicia carrier.
  • a second projection 13 extends out of the plane of carriage 7 and is sufficient in dimensions to be pushed by the drive means.
  • FIG 2 shows a portion of the same display unit as described in the context of Figure 1. Identical components have retained identical numerical references. In this illustration however, the driving means 14 are present. A socket 15 for receiving the current from an AC/DC transformer and switch 16 for on/off and AC/DC or battery operation selection have been illustrated.
  • Driving means 14 shows a protruding rack 17 abutting against carriage projection 13 so that when the rack displaces in the upwards direction or the downwards direction the indicia carrier correspondingly displaces.
  • Rack 17 operates up and down along the centre of gravity of the carrier and by so doing improves the quality of the display and the durability of the unit.
  • the driving means employs a rotor which generates motion and transmits motion through gears to a rack and pinion mechanism.
  • the driving means operates in one direction only while generating the required sequential oppositely directed movements of the indicia carrier.
  • Figure 3 shows a schematic perspective of how this sequential oppositely directed movement of the indicia carrier is achieved.
  • the motion from the rotor is transmitted through a series of gears to cog 21 which rotates in one direction only during its operation.
  • motion is transmitted to a wheel 22 which also rotates in one direction.
  • the motion of cog 21 is transmitted to cog 23 which transmits its motion to a pinion 24.
  • Pinion 24 engages a rack 25.
  • cog 23 directly engages pinion 24 and by so doing drives the displacement of the rack in one direction.
  • Cog 21 is rotated about a shaft 26.
  • a pivoting arm 27 which itself has a shaft 28 about which cog 23 rotates.
  • Arm 27 is adapted to pivot along with shaft 28 and cog 23 about shaft 26 which is fixed to the gear box casing (not illustrated in the drawing).
  • Arm 27 incorporates a cut-out 29 into which is inserted an extremity 30 of a sliding arm referenced 31.
  • the opposite extremity of arm 31 incorporates a projection 32 extending perpendicular to arm 31 and engaging with wheel 22.
  • Wheel 22 has the particularity of comprising a channel 33 which extends around the wheel's axis and has at least two radii values. In this particular embodiment, there are two main radii portion 34 and 35. As the wheel is rotated about its fixed axis 36, arm
  • Rotor 42 drives an output cog 43 which rotates cog 44.
  • Cog 44 rotates about a shaft 45 which is fixed relative to the gear box housing 46.
  • Cog 44 presents a first array of teeth 50 placed about a first diameter of the cog about its largest diameter and a second array of teeth 47 placed about a smaller diameter of the cog, inwardly located with reference to the largest diameter so that this arrangement essentially constitutes a reduction gear.
  • the second array of teeth 47 engages a first array of teeth 51 of cog 48 which also presents a second array of teeth 52 destined to further reduce the rotation.
  • This latest second array of teeth engages a further reduction gear 53 placed about a third shaft 54.
  • the rotation of reduction cog 53 is transmitted to a further reduction cog 55 rotating about a fourth shaft 56.
  • this reduction cog 55 transmits motion to a further reduction cog 57 arranged below cog 53 on shaft 54.
  • This configuration is particularly advantageous as it permits the gear box to be compact.
  • Cog 58 transmits about its smaller diameter 61, the motion to cog 21 which goes on to transmit motion to cog 23 and to the rack and pinion mechanism constituted of pinion 24 and rack 25.
  • Figure 4B shows gear box 41 in a stretched elevation (i.e. along the shafts about which the cogs are rotated).
  • cog 23 is engaged with a series of reversing cogs 38, 39 and 40 which transmit motion to the pinion 24 in the opposite direction than that achieved in the engagement described in Figure 4A.
  • the rack 25 will also be displaced in the opposite direction to that achieved in the context of Figure 4A.
  • Figure 5A displays a side elevation of the driving means.
  • the different components of the driving means have been given the same numerical references as used in Figures 3, 4A and 4B. It would be superfluous at this stage to reiterate the description of this system as detailed with reference to the previous figures, the figure is therefore simply referenced for added clarity.
  • Arm 31 can be seen extending over wheel 22 while its projection 32 engages channel 43. Projection 32 is depicted as engaging the larger radius portion of the channel. As the wheel 22 is rotated, projection 32 will pass into the smaller radius portion. This passage from one radius portion to another corresponds to the displacement of cog 23 from its engagement with the pinion 24 to its engagement with cog 38. Arm 31 is constrained between four rails 62, 63, 64 and 65 which project from the housing and constrain arm 31 to displace essentially linearly. The extremity 30 of arm 31 locks into cut-out 29 of pivoting arm 27.
  • a member 68 projects on either side of the cog. Protruding from the inner wall of the housing are two stops 66 and 67. Member 68 abutts against stop 66 when engaging pinion 24 and against stop 67 when engaging cog 38. From member 68, a hook 69 extends so as to overlap a portion of the pinion.

Abstract

La présente invention a trait à une unité destinée à l'affichage d'images et du type, généralement connu en soi, comportant un ou des objectifs à travers lesquels un support de d'inscriptions peut être visualisé et un moyen d'entraînement destiné au déplacement dudit support de manière séquentielle dans un sens ou dans le sens inverse. L'invention se caractérise en ce que le moyen d'entraînement comporte un engrenage de renversement de marche automatique pour permettre le fonctionnement du moyen d'entraînement dans un sens seulement tout en générant les déplacements séquentiels nécessaires pour l'orienter dans le sens inverse.
PCT/GB2003/004119 2002-09-17 2003-09-16 Unite d'affichage WO2004027741A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003267625A AU2003267625A1 (en) 2002-09-17 2003-09-16 A display unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0221536A GB2393558A (en) 2002-09-17 2002-09-17 Multi-image dislpay with carrier displacing system
GB0221536.6 2002-09-17

Publications (1)

Publication Number Publication Date
WO2004027741A1 true WO2004027741A1 (fr) 2004-04-01

Family

ID=9944214

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/004119 WO2004027741A1 (fr) 2002-09-17 2003-09-16 Unite d'affichage

Country Status (3)

Country Link
AU (1) AU2003267625A1 (fr)
GB (1) GB2393558A (fr)
WO (1) WO2004027741A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296879C (zh) * 2005-01-12 2007-01-24 何冰心 轻体变画灯箱
CN107316575A (zh) * 2017-08-25 2017-11-03 邱艳 一种消防用消防安全知识高效宣传装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1138908A (ja) * 1997-07-16 1999-02-12 Kiyooshin:Kk 機械式２画面切換表示装置
EP1001401A1 (fr) * 1998-11-13 2000-05-17 M.V.T. Multi Vision Technologies Ltd. Unité d'affichage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0623824B2 (ja) * 1989-02-13 1994-03-30 卓 熊谷 画像表示装置
US6219948B1 (en) * 1997-06-05 2001-04-24 M.V.T. Multi Vision Technologies Ltd. Display unit
IL130782A0 (en) * 1999-07-04 2001-01-28 Itzhak Bar Yona Display units
US6384980B1 (en) * 2001-03-06 2002-05-07 Mckinley William R. Device for displaying lenticular displays
EP1397724A2 (fr) * 2001-06-22 2004-03-17 Captiva Hong Kong Limited Unite d'affichage d'images multiples presentant un mecanisme de deplacement de support

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1138908A (ja) * 1997-07-16 1999-02-12 Kiyooshin:Kk 機械式２画面切換表示装置
EP1001401A1 (fr) * 1998-11-13 2000-05-17 M.V.T. Multi Vision Technologies Ltd. Unité d'affichage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 05 31 May 1999 (1999-05-31) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1296879C (zh) * 2005-01-12 2007-01-24 何冰心 轻体变画灯箱
CN107316575A (zh) * 2017-08-25 2017-11-03 邱艳 一种消防用消防安全知识高效宣传装置
CN107316575B (zh) * 2017-08-25 2019-11-08 泉州台商投资区简锐工业设计有限公司 一种消防用消防安全知识高效宣传装置

Also Published As

Publication number Publication date
AU2003267625A8 (en) 2004-04-08
GB2393558A (en) 2004-03-31
AU2003267625A1 (en) 2004-04-08
GB0221536D0 (en) 2002-10-23

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