EP3345177A1

EP3345177A1 - Device for displaying a variable instruction by an instruction road sign

Info

Publication number: EP3345177A1
Application number: EP16767000.9A
Authority: EP
Inventors: Franck Gauthier; Jean-Louis BOURDAIS; Mickaël CADOUR
Original assignee: Aximum SAS
Current assignee: Aximum SAS
Priority date: 2015-09-04
Filing date: 2016-08-30
Publication date: 2018-07-11
Also published as: FR3040819A1; US20180247573A1; FR3040819B1; WO2017037379A1

Abstract

The invention relates to a device for displaying an instruction, in particular a speed limitation, by a B14 or equivalent panel (1), the panel (1) comprising a flat circular front plate (2) with an instruction display area (5). In the case of a B14 panel, the digital value displayed can be modified by changing at least one modifiable character and the display area (5) comprises an opening (8) and the panel further comprises at least one flat movable support on which the substitution figures (7) are represented, the front plate (2) and the flat movable support being parallel to each other, the flat movable support being included in the template of the front plate (2), each substitution figure being able to be provided by an actuator facing the opening (8), the flat movable support or at least one of the flat movable supports being a disc rotatable about the centre thereof, the centre of the rotatable disc being laterally offset with respect to the centre of the circular front plate (2). The device is autonomous with photovoltaic power supply.

Description

DEVICE FOR DISPLAYING A VARIABLE PRESCRIPTION BY A PRESCRIPTION ROAD PANEL

TECHNICAL FIELD TO WHICH THE INVENTION RELATES The present invention relates generally to variable display display devices by codified prescription panel of the B-series, in particular of the B14 speed limitation display-type road sign. It therefore relates in particular to traditional B14 coded metal standing type panels and displaying the speed limit in a white background display area in the center of a red crown. However, it can be applied to other types of prescription signs and to areas other than road traffic and for example in the field of railway or river / maritime signaling but with codifications or standardizations adapted to the field concerned.

BACKGROUND

Variable light display systems for limiting road speeds are known. They have the same regulatory strength as the traditional B14 fixed display metal panels on which the specified speed is painted, printed, screen printed or inscribed, in particular on an adhesive film. However, having been accustomed to traditional B14 fixed metal sign panels, motorists are tempted to pay less attention to variable light panels. In addition, along certain sections of taxiways having both light panels and fixed traditional signs, the presence of a sequencing of conflicting speed limiting information displayed on the light panels and fixed panels can generate misunderstandings on the part of users and generate dangerous behaviors such as untimely acceleration and deceleration.

It is therefore interesting from the point of view of safety and respect of speed limits to use conventional panels. However, these conventional panels are fixed display, which prevents or limits their use in areas where the speed limit should be changed frequently because they should be changed.

Document WO-86 / 06860A1, US-5,493,292A and JP-H07-3730A disclose variable prescription panels. These panels have a rotatable portion that is centered on the circular front plate of the panel.

OBJECT OF THE INVENTION

In general, the invention relates to a device for displaying a prescription by a prescription road sign having an appearance according to codification B or equivalent, the panel comprising a flat front plate circular with an anterior display face and a rear face opposite to the anterior face, the anterior face of said panel showing substantially in its center, on a prescription display area, a prescription consisting of several coded symbols and size symbols.

According to the general principle of the invention, the displayed prescription can be modified by changing at least one of the symbols, said modifiable symbol, of the prescription, and the display area comprises at the level of said at least one modifiable symbol an opening passing through the front plate and the panel further comprises, on the side of the rear face of the front plate, at least one movable plane support on which a set of substitution symbols is shown, said front plate and said at least one movable plane support being parallel to each other, said at least one movable planar support having a maximum lateral extension included in the template of the front plate, each substitution symbol being able to be brought by at least one actuator of said at least one moving plane support, facing the opening to make it visible from the front of the panel, and thus create a prescription display function of said substitution symbol made visible, the suppo rt movable plane or at least one of the movable planar supports being a mobile disk rotating about its center, the center of the rotating mobile disc being offset laterally with respect to the center of the circular front plate.

In order to allow, in the case of the coded panels B14, a variable speed display that is more surely respected, a variable speed limit display panel is proposed which is in a traditional form and therefore according to the coding B14. In addition, this panel does not require direct human intervention for the change of the display because it is remotely controlled and it is autonomous.

Thus, in the case of coded panels B14, the present invention relates to a speed limitation display device per panel having an appearance according to codification B14 or equivalent, the panel comprising a circular flat front plate with an anterior display face and a posterior face opposite to the anterior face, the anterior face of said panel showing substantially at its center, on a speed display zone, a numerical value of speed limitation of which each character is of the type Arabic numeral of coded dimensions and typography ,

According to the invention, the displayed numerical value can be modified by changing at least one of the characters, called modifiable character, of the numerical value, and the display zone comprises at the level of said at least one modifiable character an opening crossing the front plate and the panel features in in addition, on the side of the rear face of the front plate, at least one movable plane support on which a set of substitution figures is represented, said front plate and said at least one movable plane support being parallel to each other, said at least one movable support plane having a maximum lateral extension included in the template of the front plate, each substitution number can be brought by at least one actuator of said at least one movable plane support, facing the opening to make it visible by the front of the panel, and thus create a digital value display function of said substitution number made visible, the mobile plane support or at least one of the movable planar supports being a mobile disk rotating about its center, the center of the mobile disk in rotation being offset laterally with respect to the center of the circular front plate.

In various embodiments of the invention, the following means can be used alone or in any technically possible combination, are employed:

- the symbols are pictograms,

- the pictograms represent selected elements among, in particular, a bicycle, a moped, a motorcycle, a car, a truck, a bus, a period of no parking, a reason to go from a parking ban to a ban on to stop, a panel display part,

- the prescription is a spacing distance, the symbols being numerical characters of Arabic numerals type and the panel is coded B17,

- the prescription is a speed limitation, the sign being a coded speed limit sign B14, the prescription consisting of several symbols forming a numerical value of speed limitation, the symbols being numerical characters, each numerical character being of type an Arabic numeral, the modifiable symbols being modifiable numeric characters, the substitution symbols being substitution numerals, the front face of said panel displaying substantially at its center, on a speed display zone, the numerical value of speed limitation, and the panel further comprises, on the side of the rear face of the front plate, said at least one movable plane support on which a set of substitution figures is represented, said front plate and said at least one movable plane support being parallel between them, said at least one movable plane support having a maximum lateral extension compr ise in the template of the front plate, each substitution figure can be brought by said at least one actuator of said at least one movable plane support, facing the opening to make it visible from the front of the panel, and thus create a display of numerical value function said substitution figure made visible, the movable plane support or at least one of the movable planar supports being a mobile disk rotated around its center, the center of the rotating mobile disk being shifted laterally relative to the center of the circular front plate,

the numerical value of speed limitation is in tens (km / h or miles / h),

the numerical value of speed limit is in hundreds (km / h or miles / h),

the character of the tens of the numerical value of speed limitation is substitutable,

the character of the hundreds of the numerical value of speed limitation is substitutable,

one of the substitution symbols of the set of substitution symbols is an absence of a symbol corresponding to a uniform background tint of the display zone,

the panel comprises a mobile plane support by substitution symbol,

the panel comprises a movable plane support for a subset of the substitution symbols,

the panel comprises a movable plane support for the set of substitution symbols,

one of the substitution digits of the set of substitution digits, that of the hundreds, is an absence of a digit corresponding to a uniform background tint of the speed velocity display area in order to be able to display a numerical value speed limit in tens or hundreds,

the panel comprises a mobile plane support by substitution cipher,

the panel comprises a mobile planar support for a subset of the substitution figures,

the panel comprises a mobile planar support for all the substitution figures,

the panel further comprises, on the side of the rear face of the front plate, a fixed plane support having a modifiable character and a second movable planar support with at least one substitution number for the modifiable character of the fixed plane support, the second mobile plane support being disposed in front of the fixed plane support, the planar supports being parallel to each other and to the front plate,

- the front plate is rigid,

the front plate is a non-metallic plate, in particular comprising a synthetic material,

the front plate is a metal plate,

the mobile plane support is rigid, the mobile plane support is a non-metallic plate, in particular comprising a synthetic material,

the mobile plane support is a metal plate,

the front plate and the movable flat supports have their reflective front faces,

- The actuator is electrical and the display device is self-powered with an electric battery recharged by photovoltaic cells of said device, said device being remotely controllable and further comprising a computer control device, at least one position sensor of mobile planar support, and a radio transceiver for, on the one hand, receiving instructions by radio and, on the other hand, transmitting information, the instructions received being at least instructions for displaying a prescription; determined, in particular a determined speed, and the information transmitted being at least information concerning the state of the display,

the display device is remotely controlled by wireless telecommunication,

the display device further comprises a local control means, the computer control device comprising input outputs with a display and a keyboard,

the display device furthermore comprises an electric or optical wired telecommunication means, the computer control device comprising input outputs with a wired connection,

the circular flat plate of the panel comprises or forms an antenna,

the back closing back of the panel comprises or forms an antenna,

the actuator is an electric motor,

the electric motor comprises a geared motor,

the actuator is an electromagnet,

the actuation by the electromagnet is bistable, the control of the electromagnet can remain in two distinct stable positions without the magnet being energized,

the panel comprises a single mobile plane support which is a mobile disk rotated about its center for all the substitution symbols, in particular substitution numerals, each substitution symbol, in particular a substitution digit, occupying a radial sector. angular clean of said mobile disk,

the substitution figures are represented on the disk in an orientation such that the height of each digit is substantially perpendicular to the bisector of the corresponding radial sector, in the case of a panel with a single mobile plane support, the mobile disc is arranged parallel to the plane of the front plate and substantially against the rear face of said front plate,

the panel comprises, from front to rear, the front plate, a second movable plane support which is circular and the mobile disk, the second circular plane support being rotatable about its center and comprising at least one substitution number; and at least one opening therethrough, the planar supports being parallel to each other and to the front plate,

the panel comprises, from front to rear, the front plate, a second movable plane support, a fixed plane support and the mobile disk, the fixed plane support comprising an modifiable symbol, in particular a modifiable numerical character, by masking by a substitution symbol, in particular a substitution number, of the second movable planar support, the fixed planar support further comprising an opening therethrough for displaying at least one of the substitution symbols, in particular substitution digits, of the mobile disk, the supports planes being parallel to each other and to the front plate,

the second movable plane support has a clean actuator,

the actuator of the second movable plane support is an electric motor,

the actuator of the second movable plane support is an electromagnet,

the second movable plane support is rigid,

the second movable planar support is a non-metallic plate, in particular comprising a synthetic material,

the second movable plane support is a metal plate,

the fixed plane support is rigid,

the fixed plane support is a non-metallic plate, in particular comprising a synthetic material,

the fixed plane support is a metal plate,

the second movable plane support and the fixed plane support have their reflective front faces,

the mobility of the second mobile plane support is controlled by the rotation of the mobile disk,

the second movable plane support is movable in a chisel and its control by the rotation of the mobile disk is cams,

the actuator of the mobile disk is a fixed electric motor driving in rotation a toothed wheel engraining teeth disposed at the periphery of said movable disk,

the actuator in rotation of the mobile disk is bidirectional, the mobile disk being able to rotate in one direction or the other, the actuator in rotation of the mobile disk is monodirectional, the mobile disk always rotating in the same direction,

the actuator of the movable disk is a fixed electromagnet, pulsing a driving cam driving a tooth of both teeth arranged on the mobile disk, the mobile disk further comprising a mechanism for ratchet making its rotation one-way,

the panel comprising a single mobile plane support, in this case the mobile disk, is intended for displaying digital speed limitation values that are exclusively two characters or exclusively three characters in length,

the panel comprising a second movable plane support, a fixed plane support and the mobile disk, is intended for displaying two-character or three-character speed limitation digital values,

the mobile disk is integral, free in rotation, with the remainder of the panel by means of an axis passing through the center of said movable disk,

- The movable disk is integral, free in rotation, with the rest of the panel through, on the one hand, the toothed drive wheel driven by the electric motor and engraining teeth disposed at the periphery of said movable disk and, on the other hand, at least two toothed sprocket wheels engraining the teeth disposed at the periphery of said movable disc, the toothed drive wheel and the at least two toothed idler wheels being distributed around the periphery of said movable disk, anterior slides and / or posterior possibly removable being possibly applied against one / the parts of the front and / or rear face of the mobile disk,

- The movable disk is integral, free in rotation, with the rest of the panel through, on the one hand, the toothed drive wheel driven by the electric motor and engraining teeth disposed at the periphery of said movable disk and, on the other hand, at least two toothed sprocket wheels engraining the teeth disposed at the periphery of said movable disk, the toothed drive wheel and the at least two toothed idler wheels being distributed around the periphery of said movable disk, furthermore the disk movable forwardly against the rear face of the front plate and back against a front face of a motor support plate disposed behind said movable disk, said applications preferably being effected via reduced friction elements,

one of the substitution figures of the set of substitution figures is an absence of a number corresponding to a uniform background tint of the speed display zone,

the position sensor of the moving plane support is electro-optical, an electrooptical sensor detecting optically readable marks on the flat support mobile,

the position sensor of the moving plane support is electromechanical, a contactor being actuated by at least one indexing finger of the movable planar support,

the position sensor of the moving plane support is electromechanical, a contactor with flexible blades being actuated by at least one indexing magnet of the moving plane support,

the panel comprises a single character of numerical value of speed limitation that can be substituted, said substitutable character being a character of ten, and the mobile disk comprises three substitution digits,

the three substitution figures for the tens are a triplet chosen from a combination of three of the following digits: "0" "1" "2" "4" "3" "5" "6" "7 >>" 8> > and "9",

the numerical value of the displayable speed limit is greater than or equal to 100 and the three substitution figures for the tens are a triplet chosen from a combination of three of the following digits: "0" "1" "2" "3",

the displayable speed limit numeral value is greater than or equal to 100 and the three substitution numbers for the tens are "0" "1" "3",

the displayable speed limit numeral value is less than 100 and the three substitution numbers for the tens are a triplet selected from a combination of three of the following numbers: "3" "4" "5" "6" "7" "8" and "9",

the displayable speed limit numeral value is less than 100 and the three substitution numbers for the tens are "5" "7" "9",

the displayable speed limit numeral value is less than 100 and the three substitution numbers for the tens are "6" "8" "9",

the panel comprises two characters of variable numerical value of speed limit that can be substituted, said substitutable characters being characters of hundreds and tens, and the mobile disk comprises a set of pairs of substitution digits, each pair comprising a representation for the tens and one representation for the hundreds,

one of the substitution digits for the hundreds is an absence of character in order to be able to display a speed limit numerical value of less than 100,

the mobile disk has two distinct sets of substitution numbers on its two opposite faces and the mobile disk can be mounted in one direction or the other to enable the display of one or the other of the two sets,

- the mobile disk with two distinct sets of substitution figures on its two opposite faces is removable and reassemblable,

in the case of a mobile disk with two distinct sets of substitution numerals on its two opposite faces, said at least one mobile planar support position sensor further makes it possible to detect the assembly intended to be displayed, the panel further comprises a plate and a rear closure back, the actuator being fixed on the plate and the movable disk being integral, free in rotation, with said plate by means of an axis passing through the center of said mobile disk,

- On the back side of the front plate, the edge of the opening through the front plate comprises a strip of flexible material intended to form a seal between said front plate and the flat support just behind said front plate to reduce the passage water and / or insects in between,

a flexible scraper is disposed on the rear face of the front plate to scrape away the surface of the mobile plane support just behind said front plate in order to eliminate any deposits that could have been deposited on said movable plane support,

the display device further comprises at least one surveillance or environment sensor,

the surveillance sensor is selected from one or more of at least intrusion detection, shock, tilt, fire,

the environmental sensor is chosen from one or more of at least temperature detection, rain, fog, position, illumination, speed of circulation (radar), counting of circulating vehicles,

the display device further comprises a computer address accessible on a computer network, preferably an INTERNET or INTRANET address on the INTERNET or INTRANET network, and the remote control is carried out via said computer address on said network,

the wireless remote control for the INTERNET-address display device implements telecommunication notably Wi-Fi® or GSM® or GPRS® or UMTS®, Lora®, Sigfox®, Zigbee®, Bluetooth®,

- the telecommunication implements any suitable protocol like in particular and also TEDI / LCR, Modbus, Diaser, as well as any other proprietary and specific protocol,

the wireless remote control display device further comprises a repeater or bridge intended to relay a remote control for another remote display device,

a wireless network is created in a set of display devices and interconnected by their repeaters or bridges, at least some of the display devices of the assembly forming the network are accessible to private users, in particular the maintenance or management personnel traveling on the roads or highways that can connect to said network,

at least some of the display devices of the assembly forming the network are accessible to the public, in particular the motorists who can connect to said network.

ADVANTAGES

The device of the invention responds to traffic control needs by temporarily changing the speed limitation. This can be useful for the management of pollution peaks, adaptation to adverse weather conditions, in the event of a specific event such as a sports or cultural event, works, anticipation of network surcharges (holidays departures) or any speed control operation. It provides some credibility and impact of the posted limitation message. The proposed device also provides an economical solution and easy to implement to ensure speed limits. In particular, it does not require to carry out civil engineering operations to connect an energy and communication network since it is autonomous and remotely controlled. In addition, it allows an implementation instead of traditional police panels with standard mounting on an existing mast without additional civil engineering to strengthen the existing massif.

The implementation of an offset of the axis of rotation of the movable disc relative to the general shape of the panel is particularly well suited to complex displays of symbols of which only a part is substitutable compared to displays of simple figures or to global substitutions of displays.

DETAILED DESCRIPTION OF AN EXEMPLARY EMBODIMENT The following description with reference to the accompanying drawings, given by way of non-limiting examples, will make it clear what the invention consists of and how it can be implemented.

In the accompanying drawings:

FIG. 1 represents a substantially front view of a first exemplary embodiment of a device according to the invention, allowing a two-digit display,

FIG. 2 represents three possibilities of displaying a limit speed for the panel of the device of FIG. 1,

FIG. 3 represents an exploded view of the panel of the device of FIG. 1,

FIG. 4 represents a substantially front view of the panel of the device of FIG. 1, the front plate of which has been removed in order to allow the visualization of the internal members of said panel and in particular of the circular mobile plane support on which substitution figures are represented,

FIG. 5 represents a view substantially from the rear of the panel of the device of FIG. 1 and whose hatches for access to internal organs have been removed in order to allow the visualization of certain of its internal organs and in particular of the electric actuator and position sensors,

FIG. 6 represents three possibilities of limit speed display for a second embodiment of a panel according to the invention, allowing a display with two or three digits,

FIG. 7 represents two exploded views of an anterior part of a panel for two possibilities of displaying a limit speed, in tens or hundreds, for the second embodiment of the panel, and

- Figures 8 to 10 show three examples of implementation of a device of the invention.

In the following, we will essentially describe in detail a display device of a prescription which is a speed limit with a coded road sign B14, the symbols being numerical characters in the form of numbers.

The panel of the device of the invention can be realized in various ways. Two embodiments will therefore be presented, a first embodiment in which the speed display is two digits and a second in which the display is two or three digits.

In its general principle, the panel device of the invention is based on three main elements: a specific display mechanism, an open and scalable control system and a very low energy consumption making it completely autonomous in energy.

Basically, the display system of the panel consists of two main means possibly repeated: a fixed part and a movable part, each of which may consist of one or more elements. In the simplest embodiments, the fixed part, called the front plate, is perforated and represents the display area common to all the messages to be displayed. In the case of a B14 type police panel, this part is forward, essentially flat and circular and represents the white background, the red crown and the number "0" for the units. This fixed part is made on the basis of a rigid substrate (sheet) on which a retro-reflective coating is applied. Still in the simplest embodiments, the mobile part is a circular mobile disc of circular shape. This is performed on the basis of a rigid substrate (sheet) on which a retro-reflective coating is applied. In the case of a panel of font type B14, this mobile part represents the different digits of the tens to be displayed in the case of a simple panel. The movable part of such a simple panel is set in motion by a mechanism which ensures the rotation and positioning according to the digit to be displayed and holding in position once the desired speed displayed. This mechanism consists for example of the following elements:

an actuator which is a direct current electric motor which generates the mechanical energy to put the moving part in motion,

- a motor-reduction device connected to the motor shaft and which drives a notched wheel, and

at least one position sensor for determining the position of the moving part.

In the case of a disk constituting the mobile part and on which we find the different substitutable digits to be displayed in the opening of the front plate, the mobile disc is free to rotate about its central axis and its periphery is provided with teeth. gear. The notched wheel of the motor with reduction motor allows the driving of the disc in rotation by coming to mesh on the teeth of the disc.

It can be noted that the combination of the motor and the motor-reduction device makes it possible to consume electrical energy only when the mobile disc is set in motion. The motor-reduction device also keeps the disc stable when the engine is no longer powered.

The realization of more complex display sequences, notably allowing the display in tens or hundreds, may require to complete the preceding mechanism by a second movable part and a fixed part to take into account the different lettering sizes according to whether one displays two or three digit limitations. The second moving part allows a concealment of one of the figures, the units in this case, and its replacement / substitution.

The first exemplary embodiment in which the speed limit display is two-digit is now described more precisely.

In Figure 1, the device comprises a speed limitation display panel 1 which is installed on a mast 3 and a photovoltaic panel 4 comprising photovoltaic cells overcomes the whole. The panel 1 comprises a circular flat front plate 2 with an anterior face having a display area 5. This front plate is a flat metal plate around which is wound a metal belt, especially aluminum, to form a backward . In alternative embodiments, the metal plate can be embossed to form the backward return on its periphery. We see two numbers on the display area 5, a first digit 6 which is the character "0" (zero) for the units and a second digit 7 which is the character "9" (nine) for the tens, which corresponds to a speed limit of 90 km / h for countries using the metric system for speeds. The first digit 6 is fixed and is for example printed or screen printed or, preferably, glued on the front plate 2. On the other hand, the second digit 7, which is a substitution figure, appears in a window / opening 8 crossing the front plate 2, this second digit 7 being printed, screen printed or glued on a movable plane support 9 of the same background color as that of the front plate 2. It will be seen later that this movable plane support has several substitution figures that can come, individually, next to the window / opening 8 of the front plate. By way of example, the three substitution figures are "5", "7" and "9" and the three variable display possibilities are represented respectively in 1a, 1b and 1c of FIG. 2.

Figure 3 allows to understand the internal structure and operation of the first embodiment of the panel. The panel 1 essentially comprises, from front to rear, the front plate 2, the movable support plane 9, here a movable disk, a plate 10 and a back 13 of rear closure. The window / opening 8 of the front plate 2 is better visible. The circular mobile plane support forms a mobile disk 9 in rotation about its center and supports a set of three substitution figures 7, "5" "7" and "9" in this case, each substitution digit occupying a radial / angular sector of the plane support. The axis of rotation 20 of the movable disk 9 is connected to the plate 10. The back 13 is a flat metal plate around which is wound a metal belt, including aluminum, to form a forward. In alternative embodiments, the metal plate can be stamped to include the return forward on its periphery. The return of the front plate 2 and the return of the back 13 are partially overlapping in order to be able to close on its circular periphery the panel 1.

The rear closure cover 13 has openings 14 closed by hatches / access covers 15 and allowing access to internal members of the panel. These internal members include the electric actuator 1 1 geared motor and position sensors 12 of the movable disc 9. The plate 10 which is fixed on the closure back 13 allows the attachment of the electric actuator 1 1 and sensors of position 12 as well as possibly other equipment (not shown) such as in particular a computer control device, a radio transceiver and a battery electric which is recharged by the photovoltaic panel 4. Collars 17 fixing and clamping installed on the rear face of the back 13 allow attachment to the mat 3.

As shown in Figure 4, the assembly of the back 13, the plate 10 and the movable disk 9 and other elements useful for the operation of the panel forms a clean functional part and the front plate 2, which is essentially passive, comes s' fix it. The connection between the two can be made at the level of the returns, before the back and back of the front plate. In addition or alternatively, this attachment of the front plate can be done via the plate or ad-hoc internal fasteners.

Still Figure 4, we see the drive means in rotation of the movable disk 9, the latter having teeth 18 on its periphery and which engrain a gear wheel 19 driven by the electric actuator 1 1 which is here an electric rotary motor of Gearmotor and return type. Position indexing means enable the sensors to determine the position of the moving disk 9, or at least determine when said movable disk has reached a determined position corresponding to the display of a determined substitution digit. These encoding means are, for example, fingers acting on an electromechanical contact of a position sensor.

Figure 5 shows, seen from the back, the panel 1 assembled. The back 13 of the panel has its openings 14 open, the hatches / access covers 15 having been removed, and there can be seen the electric actuator 11 and the position sensors 12.

We will now present a second exemplary embodiment for displaying the speed limit in tens or hundreds. Three display possibilities are shown on the panel of Figure 6 with 1 d "90", 1 e "1 10" and 1 f "130". We note that in all cases, the regulatory format of the figures is respected.

As can be seen in FIG. 7 where only the circular plane front plate 2 and the different planar supports 21, 22, 23 are represented to simplify the explanations, and as in the two-digit embodiment described above, a circular mobile plane support 21, or mobile disk, is implemented. This circular mobile support 21 circular, still said mobile disk is the rearmost. The substitution figures that are represented on this mobile disk 21 concern this time tens and hundreds and are therefore of different sizes depending on whether the speed limitation concerned is in hundreds or tens of km / h (or miles / h). Since the format is different depending on the limitation, it is also expected that the number of units, a zero in this case, can be substituted, not in value since it remains a zero, but in format. To this end, a second mobile planar support 22 with a zero of a first format is implemented. This second movable plane support 22, the foremost of the movable planar supports, is here movable in a chisel to cover or not the unit zero of a first format of a fixed plane support 23 and to substitute a zero of a other format. The fixed plane support 23 is thus sandwiched between the second movable plane support 22 and the mobile disk 21. The moving of this second movable scissor plane support 22 is provided by a cam system disposed on the movable disc 21, preferably a cam system positioned on the rotational support axis of said circular movable plane support 21. Therefore, there is no need for a specific motor to operate this second movable planar support scissors 22 and it is the same motor + geared motor that ensures the two mobilities of the two movable planar supports. The second movable scissor plane support 22 behaves as a jaw which opens or closes in a plane depending on the shape and position of the cam.

However, it is possible to implement other types of mobility of this second movable plane support and for example a single or double vertical drawer mobility or a more complex translation of the iris diaphragm type. In all cases, the circular mobile plane support 21 and the second movable plane support 22 (in this example in a chisel) are movable in planes parallel to each other and to the front face of the panel and to the fixed plane support 23. Windows / apertures 8 and 24, respectively, are formed through the front plate 2, the second movable plane support 22 and the fixed plane support 23 so as to allow correct display according to the various possible substitutions.

In the panel device of the invention, the mechanism for moving the mobile planar supports is controlled by a computer control device in the form of an electronic card which provides all the control and control functions. In addition, the device is autonomous in energy and it comprises a battery for storing electricity which is recharged by an electrical generator consisting of photovoltaic cells. As an option, a wind turbine can complete the charging facilities.

In Figures 8 to 10 is schematized in exploded and with cartridges, the display device 1 with three examples of implementation of photovoltaic cells.

In these Figures 8 to 10, the panel 1 is intended to be mounted at the front of a mast 3 which is here fixed on a concrete block 27. At the rear of the mast 2 is fixed, substantially at the height of panel 1, an electrical cabinet 28 containing the electronic / computer equipment of the device of the invention. In particular, in said cabinet 28, there is a rechargeable battery, a regulator for charging the battery and for powering the display device, a computer control device or control card and a radio transceiver or, more generally, a communication equipment. In addition, a solar / photovoltaic panel 4 consisting of photovoltaic cells is fixed in the upper part of the display device. Note that in other embodiments, some or all of the contents of the electrical cabinet can be incorporated in the display panel 1 itself, said electrical cabinet itself is then omitted from the device. Finally, to show that the device can also incorporate one or more other sensors that the positioning of the / movable planar supports, including environmental sensors, positioning (GPS), security (shock, inclination, d intrusion, flight, displacement, fire ...), a sensor 26 has been installed towards the top of the mast 3. This sensor is for example a rain sensor. It is understood that the sensor (s) may be arranged in other locations of the device and for example in the electrical cabinet or in the panel itself.

In Figure 8, the photovoltaic panel is a substantially planar and rectangular element mounted behind the mast and slightly inclined relative to the horizontal to improve light capture. In Figure 9, the photovoltaic panel is a substantially planar and circular element mounted behind the panel. In Figure 10, the photovoltaic panel is a flexible strip element mounted on the upper periphery of the panel. It is understood that even if some of the examples of positioning of the photovoltaic panel do not make it possible to obtain optimal yields in light capture, this is not really an obstacle to the operation of the device of the invention given its low average consumption.

Indeed, the entire display device of the invention is designed to minimize energy consumption: no energy consumption of the positioning mechanism when it is at rest, a computer control device Optimized low consumption, communication system and active sensors powered as needed, passive sensors, etc. The electrical energy is stored in a rechargeable battery that ensures the operation of the panel in the absence of solar radiation and allows peak consumption.

An example of basic operation of the display panel device by remote control, in particular radio, will now be described. However, it is possible to locally / directly control the panel from its computer control device which has a local input / output interface including a simplified display and keyboard. The display device, through its computer control device, has a unique identifier (reference number or computer address or WEB), which is used during radio or other exchanges to specifically control and control each panel. The computer control device which is connected to a radio transceiver and sensors, is configured to receive instructions by radio, in particular display instructions of a determined speed. The computer control device is provided with a specific software that makes it possible to manage the movements according to the received instructions. The states of the position sensors of the movable planar supports inform the computer control device of the current display and the fact that the plane support (s) are in a correct display position / reached or not. Depending on the received display instruction and the current display, the computer control device will control the electric actuator to obtain the requested display. Once this requested display has been obtained, the panel will confirm by a radio broadcast the correct implementation of the instruction. Preferably, the computer control device determines the direction of rotation to be applied to the circular moving plane support to pass as quickly / economically as possible from the initial display to the new display and then controls the motor accordingly. Preferably, the position sensors are activated when the movable planar support has reached the desired position. The states of these sensors are retransmitted to the computer control device which then suspends the power supply of the engine since the desired position for the requested display has been reached.

As security, a timer can be started upon receipt of the display instruction and if the requested display can not be obtained at the end of the time delay, the motor power is stopped and a radio transmission is issued to inform of an error. Thus, the sensors in association with the specific software of the computer control device, can determine at any time the position of the movable plane support or movable planar supports. In the example of FIG. 7, the positions of all the movable planar supports 21, 22 are determined by the position of the movable disk 21 since they are functionally integral with each other, the mobile disk 21 driving the others 22. It is also possible to detect anomalies such as a position not reached despite an engine command. The detection of these anomalies allows the system to go into a safe mode (including stopping the supply of energy to the engine) and to return an error message by radio transmission when the display instruction was transmitted by radio.

Preferably, a panel status request instruction is sent before the display instruction and this status request instruction causes the panel to reissue information concerning the functional state of the panel, for example: functional panel or not, battery charge level, current display , presence of an anomaly, type of anomaly ... in order to avoid sending a display instruction if the panel can not execute it. It is understood that if no response from the panel is obtained at this state request instruction, this corresponds to a major failure, for example a lack of power supply. Preventive maintenance can also be implemented, the panel emitting an alert if it detects an anomaly or a beginning of anomaly, for example a holding at the charge of the battery weakening despite sufficient sunshine, an unfavorable change in parameters of operation, excessive consumption of the electric actuator.

The panel can be connected to a radio communication device that allows remote control. The panel can be controlled via all existing or future radio communication systems (GSM, GPRS, UMTS, Wifi, Bluetooth, Lora, SigFox, Zigbee ...). However, it is possible to provide, among the inputs / outputs of the computer control device, one or more electrical or optical wire links enabling remote control, or local control by a portable terminal brought by an intervening party, by wired or optical fiber links: RS232, RS485, Modem, Ethernet.

Preferably, the remote control is carried out according to two principles of operation that can be used independently or simultaneously:

- A control by supervision: in this case, the panel is seen from a body supervising it as a "slave" equipment. The supervisor sends positioning instructions that are executed by the panel. In return, the panel returns information about the display and, possibly, any other information relating to the operation of the panel: anomalies, battery level, states of the various sensors that can be connected to it.

- Integrated "Web" server control: in this case, a server

"Web" is integrated with the panel's computer control device and provides a user interface that allows remote control using a user-friendly interface and does not require a specific supervisory organ. Any type of terminal with a browser is able to control the remote panel (Smartphone, tablet, PC, ...). The computer accesses to the panel are secured through the implementation of a connection procedure using a panel identifier (specific identifier and / or specific network address), a username and a password. In the same way as in the case a control by a supervisory body, the panel is able to provide information concerning the display and, possibly, any other information relating to the operation of the panel: anomalies, battery level, states of the various sensors that can be connected.

Note that, if, preferably, the radio exchanges with several panels are made in a star, that is to say between a single central control node and directly to each panel forming an end point, it is also possible to implement network exchanges, each panel forming a relay point of the network to another relay panel or terminal and, back from the terminal point panel, to another relay panel or the central control node.

Typically, the computer control device is configured to communicate according to an "INTERNET" type protocol on the "WEB" or any other suitable protocol such as TEDI / LCR, UMTS, NTC / IP, Modbus, Diaser, as well as any other proprietary protocol and specific to suppliers of supervision equipment. Password-type security and encryption of transmitted data are implemented for communications. The transmissions / receptions are carried out via a proprietary or generic modem, as well as for transmitting and receiving means.

A vandal detector, theft and / or shock can also be implemented in the panel or more generally the display device, a detection causing the issuance of an alert. Thus, the display device may be provided with monitoring sensors (so called to differentiate them from the position sensor (s) of the movable planar support (s)) detecting for example the loss of verticality and which makes it possible to transmit an alert in the case where the panel would have suffered a shock causing a displacement of its support. Other types of detection are possible. The transmission of this alert allows the operator to organize at best and as soon as possible the maintenance operations necessary for the refurbishment of the panel.

In this connection, the panel may be provided with other types of sensors, called environmental sensors to differentiate them from the position sensor (s) of the mobile planar support (s), for example rain sensor, temperature sensor, pollution, brightness (photovoltaic cells can however play this role), etc. .. Specific software of the computer control device continuously analyzes the state of these sensors and, based on information collected, including these states, and Predefined control strategies, the software generates automatically and therefore locally different requests for positioning / display of speed limits. The different implementation possibilities described above can be broken down according to various non-limiting variants:

- Autonomous and isolated operation. The panel operates autonomously and isolated. Depending on the information collected by his or her sensors, he autonomously determines the message to display. This operating mode also allows the connection to a remote monitoring body (supervision, web server).

- Cluster operation. Several panels are arranged on a road section. One of the panels has environmental sensors and plays the role of master, the other panels reacting according to the positioning commands communicated by the master panel. The transfer of information between the different panels can be done using all types of media (radio, infrared, laser, wired, optical fiber). This operating mode also allows the connection to a remote monitoring body (supervision, web server).

- Supervision control and sensors. This operating mode combines operation by supervision and by sensor (s) environment. It may relate to an insulated panel or a cluster panel system. The actuation of the displays is then governed by priority rules between the different instruction sources, that is to say the sensors (local decision) and the supervisory organs (remote origin instruction).

The display device of the invention can be positioned fixedly and permanently on the road network or in a mobile and temporary manner in the case of temporary situations: work, sports or cultural events ... The display device can also be equipped with a GPS device that allows to know precisely its position on the road network. The transmission of this position information to a remote supervisory body makes it possible to bring the following benefits in the case of fixed and mobile installations: to ensure an automatic management of its patrimony, to organize efficiently the possible interventions of maintenance by locating precisely the equipment and easily integrate the equipment into a supervision mimic.

The present invention can be applied to other types of road signs than B14 and, for example, to a panel B17 for prescribing a spacing distance between vehicles, the symbols remaining numerals characters of Arabic numerals type. It can be applied to panels B6a2 and B6a3 with numbers corresponding to periods / dates that can switch / pass from one side or the other (top right to bottom left) of the panel or for the same side of the panel the periods / dates that may change. In this last example, one of the substitutable symbols may be an absence of a symbol corresponding to the plain background of the display area. The invention can be applied in a manner equivalent to codified panels B25, B33 or B43. In addition, there is described a circular front plate panel, but the invention can be applied by equivalence to a square or rectangular front plate panel, the mobile and possibly fixed planar supports being configured to remain in the template. the front plate. Finally, the registered trademarks are the property of their respective owners.

Claims

1. Device for displaying a prescription by a prescription road panel (1) having an appearance according to coding B or equivalent, the panel (1) comprising a circular flat front plate (2) with a front display face and a posterior surface opposite to the anterior surface, the anterior face of said panel showing substantially at its center, on a display area (5) of prescription, a prescription consisting of several coded symbols and size symbols,

characterized in that the displayed prescription can be modified by changing at least one of the symbols, said modifiable symbol, of the prescription, and

in that the display zone (5) comprises at the level of said at least one modifiable symbol an opening (8) passing through the front plate and

in that the panel further comprises, on the side of the rear face of the front plate (2), at least one movable plane support (9) (21) (22) on which a set of substitution symbols (7) is shown, said front plate (2) and said at least one movable plane support (9) (21) (22) being parallel to each other, said at least one movable plane support (9) (21) (22) having a lateral extension of the front plate (2), each substitution symbol that can be brought by at least one actuator (1 1) of the at least one movable plane support (9) (21) (22), facing the opening (8) to make it visible from the front of the panel, and thus create a prescription display function of said substitution symbol made visible, the mobile planar support or at least one of the movable planar supports being a mobile disk ( 9) (21) rotating about its center, the center (29) of the rotating movable disk (9) (21) being offset laterally relative to the center of the circular front plate (2).

2. Display device according to claim 1, characterized in that the prescription is a speed limitation, the panel being a panel (1) coded speed limitation B14, the prescription consisting of several symbols forming a numerical value of speed limitation, the symbols being numerical characters, each numerical character being of the Arabic numeral type (6) (7), the modifiable symbols being modifiable numerical characters, the substitution symbols being substitution digits,

the anterior face of said panel showing substantially at its center, on a speed display zone (5), the numerical value of speed limitation, and in that the panel further comprises, on the side of the rear face of the front plate (2), said at least one movable plane support (9) (21) (22) on which a set of substitution figures (7) is represented, said front plate (2) and said at least one movable plane support (9) (21) (22) being parallel to each other, said at least one movable plane support (9) (21) (22) having an extension lateral section included in the template of the front plate (2), each substitution figure being able to be brought by said at least one actuator (1 1) of said at least one movable plane support (9) (21) (22), in view of the opening (8) to make it visible from the front of the panel, and thus create a digital value display function of said substitution number made visible, the movable planar support or at least one of the movable planar supports being a mobile disk (9) (21) rotating about its center, the center (29) of the rotating mobile disk (9) (21) being shifted laterally with respect to the center of the circular front plate (2).

3. Display device according to claim 1 or 2, characterized in that the actuator (1 1) is electrical and the display device is self-powered with an electric battery recharged by photovoltaic cells (4) of said device, said device being remotely controllable and further comprising a computer control device, at least one mobile plane support position sensor (12), and a radio transceiver for, on the one hand, radio receiving instructions and on the other hand, to transmit information, the instructions received being at least instructions for displaying a given prescription, in particular a determined speed, and the information transmitted being at least information concerning the state of the display .

4. Display device according to one of claims 1, 2 and 3, characterized in that the panel (1) comprises a single movable plane support which is a mobile disk (9) rotating about its center (29) for all the substitution symbols, in particular substitution digits, each substitution symbol, in particular a substitution digit (7), occupies a specific radial / angular sector of said mobile disk.

5. Display device according to one of claims 1, 2 and 3, characterized in that the panel (1) comprises from front to rear, the front plate (2), a second movable plane support (22). ), a fixed plane support (23) and the movable disk (21), the fixed plane support (23) having an modifiable symbol, in particular a modifiable numerical character, by masking by a substitution symbol, in particular a substitution digit, of the second movable plane support (22), the fixed planar support (23) further comprising an opening (24) therethrough for displaying at least one of the substitution symbols, in particular substitution numerals, of the mobile disk (21), the flat supports (21, 22, 23) being parallel to each other and to the front plate (2).

6. Display device according to claim 5, characterized in that the mobility of the second movable plane support (22) is controlled by the rotation of the movable disc (21).

7. A display device according to claim 6, characterized in that the second movable plane support (22) is movable chisel and its control by the rotation of the movable disc (21) is cams.

8. Display device according to one of claims 3 to 7, characterized in that the actuator (1 1) of the movable disc (9) (21) is a fixed electric motor rotating a gear (19). engrainant teeth (18) disposed at the periphery of said movable disc (9) (21).

9. Display device according to any one of the preceding claims, characterized in that the panel (1) further comprises a plate (10) and a rear closure (13) rear, the actuator (1 1) being fixed on the plate and the movable disk (9) (21) being integral, free in rotation, with said plate (10) via an axis (20) passing through the center (29) of said movable disk.

10. Display device according to one of the preceding claims, characterized in that it further comprises at least one sensor (26) monitoring or environment.

1 1. Display device according to one of claims 3 to 10, characterized in that it further comprises a computer address accessible on a computer network, preferably an INTERNET or INTRANET address on INTERNET or INTRANET network, and in that the remote control is performed via said computer address on said network.