Technical Field
[0001] The present disclosure relates to a dynamic or variable signalling panel, in LED
technology, for application in road environments, road and traffic signalling, comprising
a signalling face which may be installed at predetermined angles of visibility with
respect to traffic roads and to vehicles traveling on the roads.
Background
[0002] The traditional solution of variable road signalling consists of LED technology electronic
displays, which are installed in space/means above the traffic lane, tunnel ceiling
or on gantry, or at the side of the road, on posts or side supports, but always in
visibility angles perpendicular to the road, of front surface with respect to the
vehicles traveling on the road.
[0003] The size of these displays, and hence the scope of their function, depends on the
existence of minimum physical conditions for their applicability.
[0004] Patent document EP1596352 refers to an electronic panel for in-line variable road signalling which rotates
about a drive shaft driven by a motor. According to the document, the device comprises
a panel opening/closing mechanism and not a display or signalling solution itself.
However, the signalling panel solution can be seen as similar or resembling to the
one we are proposing given the installation method. But this solution does not allow
angle adjustments as performed by our solution and is only applicable to tunnel ceilings.
As such, this solution has a different construction and different application than
the present disclosure.
[0005] SWARCO's
EP0930600 document describes a panel comprising an optical element that comprises at least
one LED, at least one converging lens and one divergent lens. The LED and the lenses
are arranged in a common structure coaxial to the geometric axis of the element and
at an angle of inclination to the geometric axis. As such, this solution concerns
the optical elements, lenses, and not the panels themselves, and thus it is not related
to what we are proposing.
[0006] Some of the industry competitors but only with traditional format solutions/products:
- AESYS (www.aesys.com)
- ORTANA (www.ortana.com)
- LACROIX (www.lacroix-city.com)
- SOLARI (www.solari.it)
[0007] These facts are described in order to illustrate the technical problem solved by
the embodiments of the present document.
General description
[0008] The present disclosure relates to a dynamic and variable signalling panel in LED
technology, for application in road environments, road and traffic signalling, which
comprises a flat front surface which can be installed at visibility angles up to 180
degrees relative to the traffic roads and to the vehicles traveling therein.
[0009] The idea and concept behind the present disclosure is based on the principle of the
optical illusion, anamorphosis, paintings or markings on flat surfaces, their perspective
interpretation, the distance and function of the angle of visibility.
[0010] Based on that principle, by resorting to the technologies and materials used in the
construction of variable signalling products, namely LED - Light Emitting Diode technology,
applying a new design, organization and technological construction, the present disclosure
is obtained, with the same performance and compatibility level, in accordance with
the applicable European standard: EN 12966 of 2009.
[0011] The disclosure includes:
- Variable signalling panel in LED technology, with flat front surface that can be installed
at visibility angles up to 180 degrees with respect to the traffic roads, at lateral,
top and bottom positions relative to the vehicles traveling on the roads.
- Significant reduction of artificial or natural light reflections, towards the vehicles
on the road, considering the installation angle, given that the entire front side
is flat and angled up to 180 degrees.
- Requirements for physical space, allocation or reduction of usable space concerning
structure gauge or roadsides, of traffic roads, to less than 200mm.
- Possibility of installation on any surface around the road: top, sides or bottom.
- Flat front side allowing easy maintenance and better adaptation to environmental conditions,
whether weather or pollution.
[0012] In an embodiment of the present disclosure the road panel for installation on a support
surface in a predetermined signalling direction may comprise:
signalling face comprising a plurality of light emitters arranged in a matrix along
lines and columns of said emitters;
a panel fixing structure to the support surface by the panel part opposite to that
of the signalling face;
wherein said fixing structure is configured to secure the panel in such a way that
the signalling face and support surface are arranged at a predetermined angle, herein
referred to as installation angle (α, A);
wherein said light emitters are coupled to the panel forming a predetermined angle
between the light projection direction of the emitters and said signalling face, referred
to herein as projection angle (β);
wherein, in a section perpendicular to said support surface and parallel to the signalling
direction, said installation (α, A) and projection (β) angles are interior alternating
angles relative to the transverse formed by the signalling face;
wherein the projection angle is greater than the installation angle.
[0013] In an embodiment the signalling panel comprises the installation angle (α, A) which
is adjustable.
[0014] In an embodiment, the signalling panel comprises the projection angle (β) which is
adjustable.
[0015] Both angles can be adjusted, or constructed with different combinations in a way
to provide the best intended visibility for the installation.
[0016] In an embodiment, the signalling panel comprises, on the signalling face, a plurality
of openings, each one housing at least one respective light emitter, forming a pixel
which is an element of an image to be signalled by the signalling face, wherein said
openings are elongated in the direction of signalling.
[0017] Preferably, the electronic signalling panel is a display.
[0018] In an embodiment, the openings are oval or rectangular or stadium-shaped.
[0019] In an embodiment, the panel comprises an interior support for the light emitters
with a sawtooth-shaped cross-section, wherein a surface of each sawtooth receives
a line of light emitters arranged with the light projection direction.
[0020] In an embodiment, the installation angle is between 0° and 15°, in particular being
between 0° and 7°.
[0021] In an embodiment, the installation angle is of 0°, 1°, 2°, 3°, 4°, 5°, 6°, or 7°.
[0022] In an embodiment, the projection angle is between 5° to 60°, in particular between
5° and 30°.
[0023] In an embodiment, the projection angle can be of 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°,
13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°
or 30°.
[0024] In an embodiment, the signalling face is flat.
[0025] In an embodiment, the support surface may be comprised: in a side wall, in a vertical
pillar, in a tunnel ceiling, or under a bridge.
[0026] In an embodiment, the signs are warnings, information or images.
[0027] The disclosure also includes a method of applying an electronic signalling panel
according to any one of the preceding claims, that comprises: applying said electronic
signalling panel to said support surface, such that the signalling face and the support
surface are arranged at said predetermined installation angle (α, A).
[0028] It is also disclosed the use of an electronic signalling panel according to any one
of described embodiments for signalling in a tunnel, in a road speed bump, or in a
road floor.
Brief description of the figures
[0029] For an easier understanding of the present disclosure, figures are herein attached,
which represent preferred embodiments which, however, are not intended to limit the
scope of the present disclosure.
Figure 1: Front view of an embodiment of the panels with the application of the present disclosure
(1) compared to the application of traditional solutions (2).
Figure 2: Perspective of an embodiment of the panels with the application of the present disclosure
(1) compared to the application of traditional solutions (2).
Figure 3: Side view of an embodiment of the panels with the application of the present disclosure
(1) compared to the application of traditional solutions (2).
Figure 4: Side view of an embodiment of the panels of the present disclosure compared to the
panel size of traditional solutions for the same area of visibility where:
- (A) represents a traditional panel at 90°-318 mm;
- (B) represents a traditional panel at 83° - 316 mm;
- (C) represents an embodiment of the present disclosure at 7° - 800mm;
- (D) represents an embodiment of the present disclosure at 0° - 1527 mm.
Figure 5: An embodiment of the panels applied in the form of a floor panel embedded in a speed
bump (a) and a modular floor panel embedded in a speed bump with a top view (b) and
a distance view by the driver (c).
Figure 6: An embodiment of the panels with the saw-toothed inner frame and respective lighting
system.
Figure 7: An embodiment of the panels with side, top and driver views.
Figure 8: An embodiment of the present disclosure regarding the relationship between the rotation
of the displays and the respective visibility distance.
Detailed Description
[0030] The present disclosure comprises a new and innovative constructive principle/design
for dynamic/variable signalling panels for application in road environments, road
and traffic signalling.
[0031] This new constructive principle/design offers the possibility to install signalling
panels with reduced physical space and at non-traditional angles relative to the road
infrastructure while maintaining and ensuring the performance, functionality and technology
characteristics of variable signalling, but allowing its application, introduction
and installation under physical conditions where the traditional format is not possible.
Examples of these conditions are as follows:
- Installation of variable signalling on tunnel ceilings having low structure gauge;
- Variable signalling installation on tunnel walls, or on the sides of narrow roadside
roads (e.g. bridges, toll lanes, old, urban or rural roads, access to car parking
or others);
- Installation of variable signalling on the floor of roads, integrated in the floor
or in artificial speed bumps.
[0032] The final solution provides a product with a simple construction, with a front side
having flat surface, that can be installed at visibility angles of up to 180 degrees
relative to the traffic roads and to the vehicles traveling therein. Figures 5, 6
and 9 below illustrate this application on the road floor.
[0033] To allow for the practical implementation of the principle described, the LED display
electronic solution is reorganized in an even more modular way than the traditional
one, by means of a system that allows the creation of visibility lines adjustable
in angle of light projection - and adjustable in intervals with each other so as to
create the optical illusion and the correct interpretation/reading of the signalling.
In practice, the solution can be implemented with predefined visibility points (LEDs)
for predefined signalling, or LED lines that are configurable/programmable through
smart controllers.
Table I - Relationship between display rotation and respective visibility distance.
Panel Rotation (A) |
Visibility Distance (B) |
0° |
12.724 m |
1° |
13.623 m |
2° |
14.666 m |
3° |
15.888 m |
4° |
17.340 m |
5° |
19.087 m |
6° |
21.231 m |
7° |
23.919 m |
[0034] In figure 8 it is possible to see the relationship between the rotation of the display
(A) and the visibility distance (B) of the driver on the traffic road (see also Table
I).
[0035] In figure 4 it is possible to observe how the inclination of the panel allows having
a physically shorter display, but which visually corresponds to a display of larger
dimensions that had been mounted flat relative to the support surface.
[0036] The term "comprises" or "comprising" when used herein is intended to indicate the
presence of the mentioned characteristics, elements, integers, steps and components,
but does not preclude the presence or addition of one or more other characteristics,
elements, integers, steps and components, or groups thereof.
[0037] The described embodiments are combinable with each other. The present invention is,
of course, in no way restricted to the embodiments described herein and a person with
ordinary skills in the art may foresee many possibilities of modification thereof
and substitution of technical characteristics for other equivalents, depending on
the requirements of each situation, as defined in the appended claims. The following
claims define further embodiments of the present description.
1. Electronic road signalling panel for installation on a support surface in a predetermined
signalling direction, comprising:
signalling face comprising a plurality of light emitters arranged in a matrix along
lines and columns of said emitters;
a panel fixing structure to the support surface by the panel part opposite to that
of the signalling face;
wherein said fixing structure is configured to secure the panel such that the signalling
face and support surface are arranged at a predetermined angle,
herein referred to as installation angle (α, A);
wherein said light emitters are coupled to the panel forming a predetermined angle
between the light projection direction of the emitters and said signalling face, referred
to herein as projection angle (β);
wherein, in a section perpendicular to said support surface and parallel to the signalling
direction, said installation (α, A) and projection (β) angles are interior alternating
angles relative to the transverse formed by the signalling face;
wherein the projection angle is greater than the installation angle.
2. Electronic signalling panel according to the preceding claim wherein the signalling
face comprises a plurality of openings, each housing at least one respective light
emitter, forming a pixel which is an element of an image to be signalled by the signalling
face; wherein said openings are elongated in the signalling direction, preferably
said electronic signalling panel being a display.
3. Electronic signalling panel according to the preceding claim wherein the openings
are oval or rectangular or stadium-shaped.
4. Electronic signalling panel according to any one of the preceding claims, wherein
the installation angle (α, A) is adjustable.
5. Electronic signalling panel according to any one of the preceding claims, wherein
the projection angle (β) is adjustable.
6. Electronic signalling panel according to any one of the preceding claims, wherein
the panel comprises an interior support for the light emitters with a sawtooth-shaped
cross-section, wherein a surface of each saw-tooth receives a line of light emitters
arranged with the light projection direction.
7. Electronic signalling panel according to any one of the preceding claims, wherein
the installation angle is between 0° and 15°, in particular being between 0° and 7°.
8. Electronic signalling panel according to the preceding claim, wherein the installation
angle is of 0°, 1°, 2°, 3°, 4°, 5°, 6°, or 7°.
9. Electronic signalling panel according to any one of the preceding claims, wherein
the projection angle is between 5° and 60°, in particular being between 5° and 30°.
10. Electronic signalling panel according to the preceding claim, wherein the projection
angle is of 5°, 6°, 7°, 8°, 9°, 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°,
20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29° or 30°.
11. Electronic signalling panel according to any one of the preceding claims, wherein
the signalling face is flat.
12. Electronic signalling panel according to any one of the preceding claims, wherein
the support surface is comprised: in a side wall, in a vertical pillar, in a tunnel
ceiling, or under a bridge.
13. Electronic signalling panel according to any one of the preceding claims wherein the
signs are warnings, information or images.
14. Method of applying an electronic signalling panel according to any one of the preceding
claims, that comprises:
applying said electronic signalling panel to said support surface, such that the signalling
face and the support surface are arranged at said predetermined installation angle
(α, A).
15. Use of an electronic signalling panel according to any one of claims 1 - 13 for signalling
in tunnel, in road speed bump, or in road floor.