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
  • G09F11/24—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the advertising or display material forming part of a moving band, e.g. in the form of perforations, prints, or transparencies
  • G09F11/29—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the advertising or display material forming part of a moving band, e.g. in the form of perforations, prints, or transparencies of a band other than endless
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F21/00—Mobile visual advertising
  • G09F21/04—Mobile visual advertising by land vehicles
  • G09F21/048—Advertisement panels on sides, front or back of vehicles

Definitions

• the present invention relates to the field of driving large films such as advertising posters supported by a moving strip.
• large dimensions we mean dimensions of the order of a meter and more, in contrast to the mechanisms for driving small films such as cinematographic films or magnetic recording tapes, which are very technical. distant, and outside the knowledge of a person skilled in the art specific to the present invention.
• the drive of such films is carried out in the state of the art by two rollers, an unwinding roller and a drive roller.
• the two rollers are motorized, and a servo circuit controls the drive speed of each of the motors. It is in fact advisable to compensate for the differences in rotation speed resulting from the variation in the external diameter of each of the rollers, as a function of the progression of the movement.
• the object of the present invention is to remedy these drawbacks, by proposing an essentially mechanical device, ensuring self-adjustment of the tension of the film without recourse to electronic means for controlling the relative speed of rotation of the two rollers. .
• the invention relates in its most general sense to a device for driving a large film, in particular advertising posters supported by a moving strip, between a driving roller and an unwinding roller, characterized in that only one of the rollers is driven by an electric motor, the other roller being driven by a coupling means comprising a flange coupled to the motorized roller, said flange driving the second roller by means of a spring.
• the flange of the coupling means is driven by a toothed belt.
• the outside diameter D1 of the rollers is substantially greater than D2-D1 where D2 denotes the outside diameter of the entire film wound on one of the rollers.
• the drive motor is integrated inside one of the rollers.
• the upper roller comprises a pulse sensor delivering a signal to a circuit for controlling the speed of rotation of the motorized roller to control the acceleration and deceleration of the film movement.
• the film has metal bands signaling the start of a sequence when passing in front of an inductive sensor.
• FIG. 1 and 2 show views along two perpendicular sectional planes of the device according to an exemplary embodiment of one invention.
• the device consists of two rollers, a drive roller (29) and a take-up roller (30).
• These rollers (29, 30) are formed by aluminum tubes with an external diameter of 166 millimeters, and a length of the order of 3 meters.
• An electric motor (1) comprising a known type of reduction gear is housed inside the motor tube (29).
• the axis of the motor drives the driving roller (29) by means of a cylindrical flange (9), with an outside diameter substantially equal to the inside diameter of the driving roller (29), a screw ensuring the locking of this flange (9) relative to the drive roller (29).
• the motor body (1) is supported by a fixing landing (5) fixed to the frame by a fixing flange (6).
• a toothed drive pulley (4) is fixed to a flange (4) secured to the end of the - drive roller (29) by means of a locking screw (3).
• the opposite end of the drive roller (29) is closed by a flange (10) having an axis (11) cooperating with a bearing (14) mounted on a support (18) ensuring the connection with the frame.
• An inductive sensor (16) is arranged facing the flange (10). It is fixed to the support (18) by means of a socket (17). This sensor detects the passage of metallic marks provided on a coded disc (12) shown from the front in FIG. 2.
• This sensor delivers signals representative of the position and the speed of rotation of the upper roller. These signals are used optionally, not to control the speed of rotation of the lower roller, but to control the acceleration or deceleration of the single motor as a function of the position of the film driven by the device.
• the take-up roller (30) is fixed to the frame at one of its ends by means of a flange (31) having an axis (111) cooperating by a bearing (114) with the support (19) for connection with the frame.
• the other end also has a flange (32) secured to the roller (30) by means of a radial screw.
• a receiving gear (37) is driven by a toothed belt (39) transmitting from the drive roller.
• This spring is secured by one end of the flange (38) secured to the take-up roller
• the toothed belt (39) drives the receiving toothed wheel (37) the torque is transmitted to the roller via the spiral spring (34).
• This spring ensures on the one hand the adequate tension of the film which is driven from the drive roller (29) to the take-up roller (30). It also has a function of compensating for the angular difference between the drive roller (29) and a take-up roller (30) which occurs during the running of the film.
• the angular difference between the start of scrolling and the end of scrolling is 0.9 turns. This angular deviation is easily made up for by a multispire spiral spring, formed by winding around fifteen turns of steel wire on a mandrel.
• a tensioning mechanism ensures the tension of the toothed belt.
• This tensioning mechanism consists of a roller (41) with a diameter of 50 millimeters supported by a lever (41) pivoting relative to a central axis. The roller (41) is pushed back against the toothed belt by a spring (42).
• two rolls of one 80 mm diameter ensures lateral positioning of the visible surface of the film. These rollers are arranged above and below the poster visible through a window in the frame, and repels the film in a constant plane, independent of the winding and unwinding diameter.
• the film may consist of a succession of posters, or be printed on a single support, either constituted by a succession of posters linked by their side strip

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Marketing (AREA)
• Displays For Variable Information Using Movable Means (AREA)
• Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9505067

Family Applications (1)

Country Status (11)

Cited By (2)

Citations (5)

• 1997
  • 1997-03-21 FR FR9703498A patent/FR2761190B1/fr not_active Expired - Fee Related
• 1998
  • 1998-03-06 AT AT98913858T patent/ATE220236T1/de not_active IP Right Cessation
  • 1998-03-06 TR TR1999/02323T patent/TR199902323T2/xx unknown
  • 1998-03-06 BR BR9808413-5A patent/BR9808413A/pt unknown
  • 1998-03-06 WO PCT/FR1998/000458 patent/WO1998043228A1/fr not_active Ceased
  • 1998-03-06 AU AU68403/98A patent/AU6840398A/en not_active Abandoned
  • 1998-03-06 DE DE69806359T patent/DE69806359D1/de not_active Expired - Lifetime
  • 1998-03-06 EP EP98913858A patent/EP0968492B1/de not_active Expired - Lifetime
  • 1998-03-06 HU HU0002350A patent/HUP0002350A2/hu unknown
  • 1998-03-06 CA CA002283968A patent/CA2283968A1/fr not_active Abandoned
  • 1998-03-06 PL PL98335889A patent/PL335889A1/xx unknown

Patent Citations (5)

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