WO2016087631A1

WO2016087631A1 - Luminous display panel

Info

Publication number: WO2016087631A1
Application number: PCT/EP2015/078627
Authority: WO
Inventors: Benjamin Champagne
Original assignee: Vitrinemedia
Priority date: 2014-12-05
Filing date: 2015-12-04
Publication date: 2016-06-09
Also published as: FR3029675A1; FR3029675B1

Abstract

The invention relates to a luminous display panel (10) having a rectangular overall shape, having two opposite longitudinal edges (12, 14) and two opposite transverse edges (16, 18), said panel comprising: a first sheet (20) and a second sheet (22, 24) facing one another, luminous elements (56) situated at at least one of the two longitudinal edges, a space (26, 28) for insertion of a document (30) to be displayed, situated between said first and second sheets. The insertion space is open at at least a first transverse edge (16, 18) of the panel and a longitudinal edge (32) of the insertion space is formed by an insertion rail for the document to be displayed, a central part of said insertion rail being substantially parallel to a longitudinal edge (12, 14) of said panel.

Description

Bright billboard

The present invention relates to a luminous display panel, of the type having a generally rectangular shape, having two opposite longitudinal edges and two opposite transverse edges, said panel comprising: a first plate and a second plate vis-à-vis the one on the other, said first and second plates being fixed to each other at at least the two longitudinal edges; light elements located at at least one of the two longitudinal edges; and an insertion space of a document to be displayed, said space being located between said first and second plates. Such a luminous display panel is described in particular in WO2013 / 178747 in the name of the Applicant.

The known illuminated billboards generally have a facade comprising a transparent central display area, surrounded by an opaque frame. The opaque frame conceals luminous elements for illuminating the display area, as well as power supplies for said luminous elements.

In order to insert documents to be displayed in the display area of the panel, it is known to fix the first and second plates to each other by magnets, in order to be able to assemble and dissociate them easily.

However, such a device still requires some manipulation of the panel, which is not practical when said panel is assembled with other similar panels.

The present invention is intended to provide a device facilitating the installation, removal or change of a document in the panel display area.

To this end, the subject of the invention is a luminous display panel of the aforementioned type, in which the insertion space is open at at least one first transverse edge of the panel and a longitudinal edge of the space. insertion is formed by an insertion rail of the document to be displayed, a central portion of said insertion rail being substantially parallel to a longitudinal edge of said panel.

According to other advantageous aspects of the invention, the illuminated display panel comprises one or more of the following characteristics, taken separately or according to all the possible technical combinations:

one end of the insertion rail, adjacent to the first transverse edge of the panel, is inclined relative to the central part of said rail, so as to form an insertion ramp of the document to be displayed; the insertion space is open at each of the transverse edges and the insertion rail comprises an insertion ramp adjacent to each of said transverse edges;

- One of the first and second plates has a notch at the first transverse edge, said notch being preferably located substantially equal distance from the longitudinal edges;

- The panel comprises a power supply device of the light elements;

- The power supply device comprises at least one clamp attached to each of the two longitudinal edges of the panel, each clamp being adapted to be assembled to an electrically conductive cable, each clamp being adapted to electrically connect said cable with panel light elements. ;

- The clamps of the two longitudinal edges are electrically connected by a conductive strip disposed along a plate;

the power supply device comprises at least one clip fastened close to each of the two longitudinal edges of the panel, each of said clips being able to be assembled to one and the same electrically conductive bar, each clip being able to electrically connect said bar with luminous elements of the panel.

The invention further relates to a light display assembly comprising: at least two electrically conductive cables; at least two illuminated display panels with tongs as described above, said panels being electrically and mechanically assembled by the two cables; and a power supply connected to one of the two panels.

The invention further relates to a light display assembly comprising: at least two electrically conductive bars; at least two illuminated display panels with clips as described above, said panels being electrically and mechanically assembled to said bars; and a power supply connected to said bars.

The invention will be better understood on reading the description which follows, given solely by way of nonlimiting example and with reference to the drawings in which:

- Figure 1 is a perspective view of a light panel according to a first embodiment of the invention;

Figure 2 is a partial side view of the panel of Figure 1;

- Figure 3 is a detail view, in section, of the panel of Figure 1;

FIG. 4 is a detail view, in cutaway view, of the panel of FIG. 1; FIGS. 5 and 6 are perspective views, according to different points of view, of a light panel according to a second embodiment of the invention;

- Figure 7 is a detail view, in cutaway, of the panel of Figures 5 and 6. Figures 1 to 4 show a light panel 10 according to a first embodiment of the invention. Figures 5 to 7 show a light panel 1 10 according to a second embodiment of the invention. In the following description, the elements common to the panels 10, 1 10 are designated by the same reference numbers.

As shown in Figures 1 and 5, the panel 10, 1 10 has a generally rectangular shape. The panel 10, 1 10 comprises in particular two longitudinal edges 12, 14 opposite and two transverse edges 16, 18 opposite. In the remainder of the description, an orthonormal base (X, Y, Z) is considered, the direction X being parallel to the longitudinal edges 12, 14 and the direction Z being parallel to the transverse edges 16, 18. In the following description for the understanding of the terms "high", "low", "lower" and "higher", it is considered that the direction Z represents the vertical.

As can be seen in particular in FIG. 2, the panel 10, 1 10 comprises a central plate 20 and two front plates 22, 24. The plates 20, 22, 24 are located substantially in (X, Z) planes and are superposed according to the direction Y. The central plate 20 is located between the front plates 22, 24. For example, the central plate 20 has a thickness of about 4 mm and the front plates 22, 24 have a thickness of about 2 mm, the thicknesses being measured according to Y.

The central plate 20 and a first front plate 22, called the front plate, are made of a transparent or translucent material, preferably polymethyl methacrylate (PMMA).

According to the first embodiment constituted by the panel 10, the adjacent plates 22, 20 and 20, 24 are respectively separated by air strips 26, 28 arranged in planes (X, Z). Each of the air knives 26, 28 forms an insertion space of a document 30 to be displayed in the panel 10. The second front plate 24 of the panel 10, called the back plate, is also made of a transparent or translucent material such as PMMA.

According to the second embodiment constituted by the panel 1 10, the adjacent plates 22, 20 are separated by an air gap 26, forming a space for insertion of a document 30, and the adjacent plates 20, 24 are at contact each other. The back plate 24 of the panel 1 10 may be formed of an opaque material, such as a thermoplastic. Optionally, a sheet of opaque material (not shown), of the reflective paper type, is interposed between the adjacent plates 20, 24.

By way of example, the document 30 to be displayed in the panel 10, 1 10 is in the form of a transparent or translucent plastic sheet, on which a visual is preferably printed.

The air gap (s) 26, 28 are open on the outside of the panel 10, 1 10 at the transverse edges 16, 18, so as to allow the insertion of the document 30 at said transverse edges. The transverse edges 16, 18 of the panel 10, 1 10 are formed by the transverse edges of the plates 20, 22, 24.

The panel 10, 1 10 comprises two strips 32, 34 which hold the plates 20, 22, 24 fixed to each other. Each strip 32, 34 is arranged along a longitudinal edge 12, 14. The strips 32, 34 are preferably formed of an opaque material, such as a metal and / or a thermoplastic. As can be seen in FIGS. 4 and 7, a strip 32 comprises, for example, a longitudinal portion 37, extending along X, with a substantially U-shaped outer contour. The strip 32 further comprises plugs 38 closing the ends of the longitudinal portion 37 .

With the exception of the strips 32, 34, the panel 10, 1 10 constitutes a transparent or translucent display area 36 for the document 30 inserted into an air gap 26, 28.

The panel 10, 1 10 further comprises a device 40, 140 for illuminating the display area 36. More specifically, the device 40, 140 allows the backlighting of the document 30 inserted into the air space 26 located close to the front plate 22. The device 40, 140 will be described below.

FIG. 3 represents a detail view, from the front, of the panel 10 according to a cutting plane AA parallel to the plates 20, 22, 24 and passing through the air knife 26. In particular, FIG. 3 represents a sectional view of the lower strip 34 of the panel 10. The lower strip 34 of the panel 1 10 has a similar shape.

The strip 34 comprises a rail 42 for inserting the document 30 into the air gap 26, the rail 42 forming a lower longitudinal edge of said air gap 26. A central portion 44 of the rail 42 is substantially rectilinear, arranged according to the direction X, parallel to the lower longitudinal edge 14 of the panel 10, 1 10. The document 30 inserted into the air gap 26 may in particular rest by gravity on the central portion 44.

At each transverse edge 16, 18, the rail 42 has a ramp 46, 48 of insertion of the document 30. Each ramp 46, 48 is substantially straight and inclined relative to the central portion 44. One end of the ramp 46 , 48 located at the transverse edge 16, 18 is lower than another end of said ramp 46, 48 joining the central portion 44. Each ramp 46, 48 therefore forms a rising trajectory for the document 30 during its insertion into the air gap 26 from a transverse edge 16, 18 of the device 10, 1 10.

The ramps 46, 48 are preferably inclined relative to the direction X, with an angle of between 5 ° and 15 °.

The ramps 46, 48 facilitate insertion of the document 30 into the air gap 26 with respect to a fully straight rail 42. According to an alternative embodiment, the ramps 46, 48 may have a slightly curved shape.

Preferably, the rail 42 and in particular the ramps 46, 48 are located inside the strip 34 opaque and are therefore little or not visible from the outside of the panel 10, 1 10.

Preferably, the upper strip 32 has the same shape as the lower strip 34 and includes in particular an insertion rail 42. The panel 10, 1 10 can thus be arranged in two different directions along the vertical.

Preferably, the strip 34 and / or 32 of the panel 10 also comprises an insertion rail 42 at the air plate 28 near the rear plate 24, said rail 42 being as described above.

At each transverse edge 16, 18, the front plates 22, 24 of the panel 10 have a notch 50. Preferably, the notches 50 are substantially equidistant from the longitudinal edges 12, 14. The notches 50 allow gripping document 30 inserted into the air knife 26, 28 to extract said document.

According to the second embodiment constituted by the panel 1 10, only the front plate 22, separated from the central plate 20 by the air knife 26, has notches 50.

The lighting devices 40, 140 of the display area 36 of the panels 10, 1 10 will now be described, in particular with reference to FIGS. 4 and 7.

The devices 40, 140 comprise a plurality of light elements 56, arranged on linear bars 58. The light elements 56 are, for example, light-emitting diodes (LEDs). Straight bars 58 are for example made of polychlorinated biphenyl (PCB).

Each device 40, 140 preferably comprises two strips 58, each of the strips being disposed in a strip 32, 34, the diodes 56 being in contact with or facing a longitudinal edge of the central plate 20. The strips 58, concealed by the strips 32, 34 opaque, are little or not visible from the outside of the panel 10, 1 10. The central plate 20 has a surface treatment for returning the light radiation of the diodes 56 to the front plates, in particular to the front plate 22.

As can be seen in FIGS. 1 to 4, the lighting device 40 of the panel 10 further comprises clamps 60. More specifically, the device 40 of the panel 10 comprises four clamps 60, two of said clamps being arranged along the upper longitudinal edge 12 and two other of said clamps being disposed along the lower longitudinal edge 14. The clamps 60 are formed of an electrically conductive material, preferably metal.

Each clamp 60 is inserted into a housing 62 formed in a strip 32, 34 at a longitudinal edge 12, 14 of the panel 10. In the case where the strip is formed of an electrically conductive material, each clamp 60 is isolated electrically from its dwelling 62.

The housings 62 of the two strips 32, 34 are aligned in pairs in the direction Z. Preferably, the two housings 62 of the same strip 32, 34 are arranged symmetrically with respect to a median plane (Y, Z) of the panel 10.

The clamps 60 are intended to be assembled with cables 63, capable of mechanically suspending the panel 10 and electrically supplying the device 40. The clamps 60 are also intended to mechanically and electrically connect two panels 10 to one another, by means of said cables 63. Such clamps and such cables equipping light panels are described in particular in WO2013 / 178747 cited above.

As shown in Figure 4, each clamp 60 is electrically connected to the bar 58 housed in the strip 32, 34, by means of a threaded rod 64 electrically conductive. A first end of said threaded rod 64 is inserted into a longitudinal edge of the central plate 20, said threaded rod passes through the bar 58 and a second end of said threaded rod is inserted into the clamp 60.

To ensure a current transfer between the bars 58 of the two strips 32, 34, the device 40 comprises two conductive strips 66. The conductive strips 66 are for example copper tracks. The conductive strips 66 are disposed against the central plate 20, on the face facing the rear plate 24. Each of the conductive strips 66 connects two clamps 60 aligned in the Z direction, each end of said strip 66 being fixed to the threaded rod 64 of one of said clamps 60. In the example of FIG. 4, a metal spring 67 provides an electrical contact by mechanical pressure between the band 66 and the threaded rod 64.

When one of the strips, for example the upper strip 32, is connected to a power supply by means of its clips 60, the conductive strips 66 allow the transfer of current to the lower strip 34 and in particular to its diodes 56. The use of copper tracks allows in particular a homogeneous transfer of the current between the two strips 32, 34.

As an alternative to the first embodiment constituted by the panel 10, a sheet of an opaque material (not shown) is interposed between the central plate 20 and the strips 66. According to another variant, said opaque sheet is glued to the central plate These variants make it possible to form a bottom of homogeneous appearance to the air gap 28 close to the rear plate 24.

According to another variant, the rear plate 24 is backlit in the same manner as the front plate 22. Thus, the two faces of the panel 10 are illuminated. According to this variant, the metal strips 66 preferably pass along the transverse edges 16, 18 of the central plate 20, in order to be as visible as possible through the rear plate 24.

According to another embodiment of the invention (not shown), an assembly is formed by two or more panels 10 connected vertically to each other by cables 63, similarly to the assemblies described in WO2013 / 178747. With the exception of cables connected to a power supply, each cable 63 vertically connects a clamp 60 of the lower strip 34 of a first panel 10 and a clamp 60 of the upper strip 32 of a second panel 10. The power supply For example, the electrical panel is arranged in height and the panels 10 are suspended from one another by the cables 63, the highest panel 10 being directly connected by cables to the power supply. The use of copper tracks 66 allows in particular a homogeneous transfer of the current between the panels 10 of such an assembly.

Preferably, a distance 68 (FIG. 1) between two clamps 60 of the same strip 32, 34 is identical for all the panels 10 of the same set, the lengths of the longitudinal edges 12, 14 may vary from one panel to the other. Thus, the clamps 60 of all the panels 10 of the assembly are respectively aligned on two vertical axes, separated from the distance 68.

According to a variant of the embodiment described above, the panel or panels 10 comprise a single gripper 60 for each longitudinal edge 12, 14. According to another variant, the panel or panels 10 comprise more than two grippers 60 per longitudinal edge 12, 14.

The lighting device 140 of the device 1 10 will now be described in more detail, in support of Figures 5 to 7. The device 140 comprises clips 70. More specifically, the device 140 of the panel 1 10 comprises four clips 70 , two of said clips being disposed near the upper longitudinal edge 12 and two other of said clips being disposed near the lower longitudinal edge 14.

The clips 70 are arranged on the rear plate 24, straddling said plate and on a strip 32, 34. A distance 72 along X between two clips 70 is identical for the clips of the upper strip 32 and the clips of the lower strip 34. Moreover, the clips 70 are aligned two by two in the direction Z.

The device 140 further comprises two parallel rods 74, arranged in the Z direction and spaced apart by a distance 72 in the direction X. The bars 74 are for example intended to be fixed to a wall of a room in which is installed the panel 1 10.

The panel 1 10 is adapted to be assembled to the bars 74 by interlocking two clips 70 on each of said bars 74, as represented by the white arrows in FIG. 6. Moreover, the bars 74 are able to be connected to a power supply. and to conduct electricity to the panel 1 10.

Figure 7 shows a detail view of the panel 1 10 at a clip 70 connected to the upper strip 32. The other clips 70 of the panel 1 10 have characteristics similar to those described below.

The clip 70 is for example formed of a thermoplastic material. The clip 70 is substantially arranged in the direction Z. A section of the clip 70 in a plane (X, Y) has a substantially U-shaped shape. At the bottom of the U-shaped section is disposed a first flexible metal blade 76. The flexible blade is bulged Y outwardly, in the opposite direction to the backplate 24.

One end of the first flexible blade 76 is pierced with a hole through which a screw 78 is arranged arranged along Y. The screw 78 passes through the strip 32, the rear plate 24 and the central plate 20. The screw 78 is connected to a spacer threaded thread 80, also disposed along Y and passing through the strip 32 and the central plate 20. Finally, the threaded spacer maintains a second flexible metal blade 82 bearing on the bar 58 of the strip 32. The flexible metal blades 76, 82, the screw 78 and the spacer 80 are electrically conductive. The second flexible metal blade 82 is slightly flexed in order to be applied in electrical contact with the bar 58.

When the clip 70 is fixed on a bar 74, the flexible blade 76 is in electrical contact with said bar 74. Electric current passes from the bar 74 into the first flexible blade 76 and is transmitted to the bar 58 by the screw 78, the spacer 80 and the second flexible metal blade 82. The light elements 56 of the device 140 are thus supplied with electricity. According to another embodiment of the invention (not shown), an assembly is formed by two or more panels 1 10 clipped on the same pair of vertical bars 74 and arranged one above the other. A single pair of bars 74 thus electrically feeds the light elements 56 of several panels 1 10. The distance 72 between two clips 70 of the same strip 32, 34 is identical for all the panels 1 10 of the same set, the lengths longitudinal edges 12, 14 may vary from one panel to another.

In comparison with the cables 63 of the panels 10, the use of the bars 74 to transfer the current to the panels 1 10 makes it possible to distribute the electric charge more homogeneously between all the panels 1 10, regardless of their distance from the electrical source. .

According to a variant of the embodiment described above, or panels 1 10 comprise a single clip 70 per longitudinal edge 12, 14. The clips are then fixed to a single bar 74. According to another variant, the panel or panels 1 10 comprise more than two clips 70 per longitudinal edge 12, 14.

Claims

1 .- panel (10, 1 10) of light display having a generally rectangular shape, having two longitudinal edges (12, 14) opposite and two transverse edges (16, 18) opposite, said panel comprising:

a first plate (20) and a second plate (22, 24) facing each other, said first and second plates being fixed to each other (32, 34) at level of at least the two longitudinal edges,

luminous elements (56) located at at least one of the two longitudinal edges,

a space (26, 28) for inserting a document (30) to be displayed, said space being situated between said first and second plates,

the panel being characterized in that:

the insertion space is open at at least one first transverse edge (16, 18) of the panel,

a longitudinal edge of the insertion space is formed by a rail (42) for insertion of the document to be displayed, a central portion (44) of said insertion rail being substantially parallel to a longitudinal edge (12, 14) said panel.

2.- illuminated display panel according to claim 1, wherein an end (46, 48) of the insertion rail, adjacent to the first transverse edge (16, 18) of the panel, is inclined relative to the central portion ( 44) of said rail, so as to form an insertion ramp of the document to be displayed.

3.- illuminated display panel according to claim 2, wherein:

the insertion space (26, 28) is open at each of the transverse edges (16, 18) of the panel,

the insertion rail comprises an insertion ramp (46, 48) adjacent to each of said transverse edges.

4.- illuminated display panel according to one of claims 1 to 3, wherein one (22, 24) of the first and second plates comprises a notch (50) at the first transverse edge, said notch being preferably located at substantially equal distance from the longitudinal edges.

5. - illuminated display panel according to one of claims 1 to 4, comprising a device (40, 140) for power supply of the light elements (56).

6. - panel (10) for illuminated display according to claim 5, wherein the device (40) for power supply comprises at least one clamp (60) attached to each of the two longitudinal edges (12, 14) of the panel, each clamp being adapted to be assembled to an electrically conductive cable (63), each clamp being able to connect said cable electrically with luminous elements of the panel.

7.- panel (10) for illuminated display according to claim 6, wherein the clamps (60) of the two longitudinal edges (12, 14) are electrically connected by a conductive strip (66) arranged along a plate ( 20).

8.- panel (1 10) light display according to claim 5, wherein the device (140) for power supply comprises at least one clip (70) fixed near each of the two longitudinal edges (12, 14). panel, each of said clips being adapted to be assembled to a single bar (74) electrically conductive, each clip being adapted to electrically connect said bar with light elements of the panel.

9. - Illuminated display assembly comprising:

at least one electrically conductive cable (63),

at least two illuminated display panels (10) according to one of claims 6 to 7, said panels being electrically and mechanically assembled by the at least one cable (63),

- a power supply connected to one of the at least two panels.

10. - Illuminated display assembly comprising:

at least one electrically conductive bar (74),

at least two illuminated display panels (1 10) according to claim 8, said panels being electrically and mechanically assembled to said bar (74)

a power supply connected to said bar.