SE501987C2 - Procedure for effecting the display of pictures on the outside of vehicles and the means for doing so - Google Patents

Abstract

The present invention refers to a method to provide for persons (2) travelling by a vehicle (5) a display of pictures, movies, or other display information (1) on an intended display area outside of said vehicle on a tunnel wall (6) or other surface suitable for this, which surface laterally delimits an intended path (8) for said vehicle, for example a tunnel for a train, a bus, a boat etc. from a display apparatus movable along said path, preferably completed with sound transmission to the interior of the vehicle. A number of LCD plates or the equivalent are used, which are arranged at the area of and/or adjacent to vehicle windows (13), in order to provide by influence of light (23) from at least one side of said plates, external picture display.

Description

501,987 vehicle changes, delays, traffic information, etc. and also being able to show advertising, films, news, etc. are thus available.

The main object of the present invention is therefore primarily to solve, among other things, the above-mentioned problems with well-functioning agents in a satisfactory manner.

Said object is achieved by means of a method according to the present invention and which is mainly characterized in that a number of LCD plates or the like are used, which are arranged at the area of and / or next to vehicle windows so that when influenced by light from at least one side of said plates create a projector that provides external image display and that means to reduce so-called the keystone effect of the displayed image is used in the form of skew of the LCD plates in question etc. and / or by neutralizing image distortion by distorting the image digitally, electronically, when mixing recorded material, by projector control unit or in the plate's video card.

According to the invention, images are arranged to be able to project a display information on a intended display surface outside the window of a vehicle in question and the display surface, on which the information is intended to be displayed, is the tunnel wall directly, without it having to be processed in any special way with e.g. extra surface treatment. This also solves the problem of so-called keystone effect of displayed image.

Unlike what has been shown to be previously known by FR, A5,2 120 243, pictures are intended to be displayed next to the vehicle in question on a wall visible to the passengers for this purpose and not at a level that is down by the vehicle's wheels. The prior art shown does not make it possible to obtain a visible image unless the distance between the tunnel wall and the vehicle in question is extremely large. This can be solved by the present invention by simple means.

Known means for achieving image display along a vehicle's path have not worked satisfactorily with high image quality as a result, without disturbances from the outside or requirements for space inside the vehicles, with consequent problems, eg vibration and cooling problems, risk of impact. , service availability, etc.

A further object of the present invention is thus to be found in means which easily and efficiently solve, among other things, the above-mentioned problems.

Said further objects are achieved by means according to the present invention, and which are mainly characterized in that a number of plates of LCD type or equivalent are arranged at the area of and / or next to, preferably above vehicle windows, said plates being from at least one side thereof actuated by means of lamps or other light source for transillumination of the plates to achieve the intended image at least outside the vehicle, and that the plates in question are adjustable inclined or that means are available for distorting the intended images by digital, electronic means, by mixing recorded material, for example by means of projector control unit or in the video cards of said plates.

The present invention is described in the following as a number of preferred embodiments, with reference to the accompanying drawings, in which Fig. 1 shows a perspective view of a cut subway car with the image display applied to the tunnel wall, Fig. 2 shows a top view of a subway set with tunnel view shown. along the track, Fig. 3 schematically shows a top view of a subway and track section along the runway, with marked units for control sensing of the system, Fig. 4 shows examples of the construction of the object of the invention in operative display mode, Fig. 5 shows a section of a tunnel with Fig. 6 shows examples of image display with provided marked image frame, Fig. 7 shows examples of control sensing systems in operation Fig. 8 shows image display surface formed by processing of tunnel wall, and Fig. 9 shows a schematic view of examples of the construction of image display media.

In order to be able to efficiently and easily achieve the display of images, film, video, TV broadcast or other desired display information 1, which may for example consist of still images 501 987 or moving images for persons 2 on at least one intended display surface 3 outside 4 of the vehicle in question 5, the intended visual information is provided on a tunnel wall or some other suitable surface 6, which laterally 7 delimits a path 8 intended for the vehicle 5, for example a tunnel for blocked trains, metro carriages, for bus, car, boat, etc. from an intended display apparatus 9, which is arranged on board the vehicle 5 in question, movable in direction 10 along said path 8. Preferably, the said external image display is allowed to be supplemented with sound transmission to the interior ll of the vehicle.

According to the invention, a number of LCD plates 12 or the like, as for example in Fig. 9, are used for the display, and which are arranged at the area of and / or at the area next to a intended vehicle window 13 so that under the influence of light from at least one side 14 of said plates 12 create a projector that provides external image display.

The present image display method for displaying images etc. on at least tunnel walls 6 or other suitable surfaces is based on the use of so-called liquid crystal displays (LCD) as media to create, for example, a moving, high-resolution image in, for example, color.

In order to be able to transmit intended desired images 1, and preferably also associated audio information, which may be arranged to be transmitted to the passages etc. 2 in the vehicles 5 in addition to the display information displayed outside of the vehicle 5, for example through the vehicle's ordinary speakers 15 for the audio transmission to the display information with the sound arranged to be transmitted and controlled by a part which controls said image display as follows, one can have recorded material projected, live material from the vehicle 5 in question, or centrally transmitted material controlled by control means 16 acting along vehicle path 8.

Images and sounds to be projected can come from three different types of broadcasts, namely a) pre-recorded material, which is stored on, for example, a picture CD, b) transmission within the means of transport in question, for example from a driver or other staff, and c) transmission from a line / communication center through either a number of transmitters, which are located along the 5 501 987 tunnel, etc. in question at suitable mutual distances, or from a so-called leaking cable.

In order for the first-mentioned and the last-mentioned mode of transmission to work flawlessly, the computer unit which controls the transmission must know, for example, exactly where the means of transport is along the route of the vehicle in question, at what speed the vehicle travels or if the vehicle is stationary .

An instrument 16 suitable for this purpose should be inexpensive, but still be robust and virtually maintenance-free.

Preferred solution means using a so-called bar code reading system for reading a suitable number of bar codes 17 located along the track 8. For example, bar codes 17 may be located at regular intervals, for example 25-100 m, on the tunnel wall 6, along the embankment 18 in the roof 19 of the tunnel 20. With the aid of bar code readers 21 on board the vehicle 5 in question, accurate position indications and accurate speed estimates can be transmitted to the control units of the intended imaging apparatus 9, which with the guidance of the information obtained can choose to send the correct display information. right place.

For example, in the case of a stationary vehicle 5, through said communication, it can communicate the exact position through already existing communication systems to, for example, line / communication center for further connection of transmission via transmitter / leaking cable, etc. to the current track section.

In order to achieve improved image display on the outside of vehicle 5 in question and to obtain a more cohesive and easily perceived image 1 on the display surface 3, the image 1 can be provided with a preferably white frame 22. Said frame 22 covers a certain part of the circumferential edge of the image field with e.g. a few percent. The coverage can take place digitally when mixing or during playback of the image material in the control unit on board the vehicle 5 or in the video card 12 etc video card in question.

Improved image quality, in cases where, for example, external disturbing electrical installations etc. are present on the tunnel wall 6, etc., can be achieved by providing the tunnel wall 6 in question with a better reflection surface suitable for image display. 501 987 Either fixed textile or metal screens can be mounted such as screens of in the tunnel longitudinal installations 50, such as cables and the like. Longitudinal installations 50 can also be covered with thin threads 6A type cobwebs, which are sprayed out over, for example, the cables. Different types of this product are available in the market. Due to the thinness and adhesiveness of the wires, the cables are covered without the formation of contours. When then the normal particle flora, which is present in the tunnels, settles on the wires, a smooth projection surface is created.

This method requires no fixed installations, cables, etc. are easily accessible for service and repair work, and after the tunnel walls have been washed, something that happens at regular intervals, a new layer of covering thin wires can be easily sprayed on, preferably through a unit on the trolley that handles, for example, the high-pressure washing.

When image display is effected by allowing said display information 1 to be obtained with light beams 23 coming from a display projector 9, which is arranged to be drivable by the vehicle 5 in question along said path 8 in the direction of movement 10 of the vehicle 5, a distortion of the image occurs. because the image display surface 3 is not at an angle of 90 ° with the beam from the projector apparatus 9, so-called keystone effect. Similar effect, which occurs when displaying slides from a projector, which is incorrectly tilted on a surface.

According to the present invention, means are used for at least reducing such a so-called keystone effect of the displayed image 1, and preferably also to completely eliminate such a keystone effect by tilting the respective LCD plates, etc. 12. Tilting of the plates 12 to a desired degree creates a distortion of the displayed image whereby one counteracts the fact that the viewing angle to the intended wall etc. 6 is less than 900.

Combined with or, alternatively in cases where the slope of the tunnel wall or possible installation of display device 9 in the vehicle 5 does not allow a viewing angle X, which can be compensated by tilting the plates 12 about an axis 24, which extends substantially along the vehicle direction 8 according to above, the image distortion can instead be neutralized by distorting the image digitally and electronically. Such image distortion is performed when mixing pre-recorded image display material, by the control unit of 7,501,987 projectors or in the respective LCD cards, etc. 12 video cards.

Preferably, display information 1 is transmitted directly on the wall 6 of the tunnel in question from a number of projectors 9, 9A, 98, 9C, 9D, 9E ... which can be supported by the vehicle 5, for example a plurality of projectors distributed along the intended side of the vehicle 5. 9-9E, for example six pieces on each vehicle trolley.

This enables distributed scattered projectors 9-9B; 9C-9E that the display information 1 is provided along substantially the entire length of the vehicle, where persons 2 reside in the vehicle 5.

It is convenient to provide display information 1 with a delimitation at least laterally between transmitted image 1, which is transmitted from respective projectors 9-9E, preferably an image frame 22.

Control of the display information 1 can suitably be achieved by means 17, which is located along a designated path 8, on which the vehicle 5 is driven in a tunnel 20 or elsewhere, for example at area 25, 26 next to station 27, 28, tunnel sensing etc. Control sensing units 60, 61 intended to be able to control the system can also none in the invention, located along a path 8.

The stated method according to the above in order to be able to obtain intended display information 1 comprises at least one display apparatus 9-9E, which is arranged to be able to project a display information 1 on a designated display surface 6 outside window 13 of a vehicle 5. Said apparatus 9-9E is arranged supported movably along a intended path 8, which the vehicle 5 in question is intended to be driven along, such as, for example, a tunnel 20 for roof, car, bus, boat, etc.

Means for being able to achieve said display further comprise that said display apparatus consists of a display projector 9-9E, which functions with image display by transmission with light beams 23 and is supported movably along said path 8.

A number of display projectors are suitably supported by the vehicle 5 distributed along the length of the vehicle. The display surface, on which the information 1 is intended to be displayed, is the tunnel wall 6 directly without it having to be treated in any special way with, for example, extra surface treatment in order for 501 987 to be made smooth and / or clean, or covered by an extra sprayed surface layer. 6A.

Control of display information 1 is arranged to be able to cooperate with said display projector 9-9E and / or its control devices. Preferably, this can be done by arranging control transmitters and receivers, for example along the path 8 in suitable places.

A centrally located tape recorder, transmitter, etc. 29, which for example works with so-called laser disks, can be arranged for connection to all devices 9-9E on a vehicle, a trolley, etc. 5, for example via cables 30, wireless, etc. When signal transmission from the central tape recorder, etc. 29 For example, all the apparatus 9-9E may be arranged to be controlled therefrom substantially simultaneously, for example for image exchange, etc. For example, the apparatus 9-9E are arranged to simultaneously display the same image and preferably there movable ones. Still image display is also possible by displaying on the intended display surface 6, preferably a tunnel wall 6.

Said display plates 12, of LCD type or other similar plates with the same function, are arranged in the area of and / or in the area next to vehicle window 13, preferably above vehicle window 13. Said display apparatus 9 may be arranged so that said plates 12 can be actuated by means of, for example, lamps 31, 32 from at least one side 14, 33 of the plates. Another light source can also be present for illuminating the plates with light 23, 34 to achieve the intended image 1, 35 at least outside 4 of the vehicle 5.

Thus, at least at the inwardly facing side 14 of the plates, there is a main light source 31, preferably a lamp and the necessary optics 36, 37 on the respective side of the plates 12.

The optics 36 may consist of an inner main reflector 38 and an inner main refractive lens 39 as well as an outer lens 37.

The external image display can advantageously be combined with image display inside the vehicle itself 5. Namely, during travel with, for example, a metro (or other type of vehicle tunnel), there may be reason to also display images on a smaller screen inside the carriage 5.

This makes disturbances on the tunnel wall - cables, side aisles, long distance to the opposite tunnel wall at double bars, etc. - less significant. This is advantageous, for example, when the external image is distorted because the display screen / tunnel wall 9 501 987 is not at a 90 ° angle to the beam from the projector (so-called keystone effect). In addition, an internal screen makes it possible to display images even during breaks at the stations where the projectors' main light source is switched off. This problem can be solved by projecting an image on a rear projection screen 40 on the inside of the carriage.

When applying projectors 9 to, for example, the upper part of vehicle walls 41 above windows 13 and by tilting the LCD plate 12, space is also created to, with the aid of an additional light source 32 and required additional optics 42, illuminate the LCD plate from the other direction seen from the main light source 31. This method creates a mirror image in a direction that is almost opposite from the screen / tunnel wall 6.

Since this image is mirror-inverted, it is perfectly suited for illuminating a so-called rear projection screen 40 of, for example, matt armored glass, which is placed above the window 13 and thus complements the image which can be seen on the screen / tunnel wall 6 through the window 13.

The function and usefulness of the invention should also have been apparent from the above and the drawings shown, in which the invention is exemplified. However, the invention is not limited to the exemplary embodiments, but can be varied within the scope of the claims, without departing from the spirit of the invention.

Claims (8)

10 501 987 P a t e n t k r a v A method for arranging for persons (2) traveling by vehicle (5) to display images, film, video, television broadcast or other display information (1) on the intended display surface (3) externally (4) if in question. vehicle (5) on a tunnel wall (6) or other suitable surface, which laterally (7) delimits a path (8) intended for the vehicle (5) in question, for example a tunnel (20) for train, bus, boat, etc. from along said track (8) movable display device (9), preferably supplemented by sound transmission to the interior of the vehicle (II), characterized in that a number of LCD plates (12) or the like are used, which are arranged at the area of and / or adjacent to vehicle window (13) in order to create a projector which, on the influence of light (23) from at least one side of said plates (12), provides an external image display and that means for reducing the so-called keystone effect of the displayed image are used in the form of skewing the LCD plates etc (12) and / or by neutralizing image distortion by distorting the image digitally, electronically, when mixing recorded material, by projector control unit or in the video card of the disc. Method according to Claim 1, characterized in that recorded material, live material from the vehicle or centrally transmitted material controlled by control means (16) acting along the vehicle path (8) is projected. Method according to Claim 2, characterized in that a so-called bar code reading system is used for reading bar code information (17) located along the path (8). Method according to one of the preceding claims, characterized in that said plates (12) are also illuminated from the opposite side so that images are projected on a rear projection screen inside the vehicle, placed, for example, above the window (13). and / or inputs in the window construction, eg inserted between window layers. ll 501 987 Method according to one of the preceding claims, characterized in that the intended surface is treated along the tunnel wall (6) with wire-shaped fabric (6A), which is sprayed out to cover the existing installation (50) forming an image display surface. Method according to one of the preceding claims, characterized in that the displayed image (1) is provided with a preferably white frame (22) covering a certain part of the circumferential edge of the image field, digitally by mixing the intended image material in control unit or in said video card. Means for carrying out a procedure for obtaining for persons (2) traveling by vehicle (5) the display of images (1), film or other display information on the intended display surface (3) externally (4) about the vehicle in question (5) ) on a tunnel wall (6) or other suitable surface, which laterally (7) delimits a path (8) intended for the vehicle (5) in question, for example a tunnel (20) for train, bus, boat, etc. from along said path (8 movable display device (9), preferably supplemented by sound transmission to the interior of the vehicle (II), according to any one of the preceding claims, characterized in that a number of plates (12) of LCD type or equivalent are arranged in the area of and / or or adjacent preferably above the vehicle window (13), said plates (12) being actuated from at least one side (14) by means of lamps (31) or other light source for transillumination of the plates (12) to produce the intended image (1) at least externally about the vehicle and that the plates (12) in question are adjustable or that there are means for distorting intended images by digital, electronic means, by mixing recorded material, for example by means of projector control unit or in the video cards of said plates. Means according to claim 7, characterized in that the plates (12) in question are connected to the image broadcasting unit (29) for recorded material, for example stored on a picture CD, and or material transmitted from the vehicle (5) in question, e.g. - from drivers, and / or material, which is transmitted from a line / communication center, for example by transmitter along the track (8), from so-called leaking cable, and that at least on one side (14) of said plates (12) there is a main light source (31), preferably a lamp and the required optics (36).