Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F19/00—Advertising or display means not otherwise provided for
  • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F19/00—Advertising or display means not otherwise provided for
  • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
  • G09F19/227—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated on windows
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F19/00—Advertising or display means not otherwise provided for
  • G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
  • G09F19/226—External wall display means; Facade advertising means
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
  • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
  • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Definitions

• the invention relates to light-emitting diode display panels, in particular large panels extending over all or part of the facade of a building.
• the device can have very large dimensions to cover an area of several hundred or several thousand square meters.
• Such a display has many advantages.
• the building that supports the display the latter taking advantage of the presence of the building to extend on a great height.
• the diodes consume relatively little energy. However, they produce an image with pronounced contrast and perfectly visible even in daylight and in full sun.
• the diodes allow the display of a fast succession of images or a film with a very satisfactory rendering.
• the diodes and the electronic circuit that carries them on the facade of the building can be placed without obstructing it for the occupants of the building.
• the diodes can be arranged on widely spaced supports that preserve most of the view for the occupants of the building and let in all the natural light desired.
• An object of the invention is to improve the diode display devices to facilitate the cleaning of the glass and remove the backlight effect.
• an element in particular for a building, which comprises: - two windows extending facing one another forming a double glazing; and an electronic circuit comprising diodes and able to display at least a portion of a video image by means of the diodes, the circuit extending facing a visible zone of the windows and between the two panes.
• the glass intended to be inside the building can be easily cleaned.
• the backlighting effect that can occur by reflection of the light rays on the inner face of the outer pane is very attenuated or suppressed due to the presence of the inner pane.
• the backlight effect was particularly pronounced in the context of the aforementioned known display when the circuit was inside the building facing a double glazing. With the invention, it is only one of the two windows that is now facing the light emitted by the device, which also helps to reduce or even eliminate this effect.
• the circuit consists, opposite the visible zone, in elongated units without connection between them in the visible zone.
• This offers a great comfort of vision for the occupants of the building. Indeed, the lack of connection household large ranges of vision without the eye meets one of the elongated units.
• the circuit is in contact with each of the two panes.
• the circuit is closely held in place and in position between the two panes.
• it avoids any risk of the circuit being deformed, for example bending or warping, as can happen with certain devices of the prior art under the effect of temperature variations experienced by the circuit because of its operation. and climatic hazards, and its exposure to the sun's rays. We thus perpetuate the dimensional characteristics of the device.
• the circuit comprises a semi-transparent support.
• the circuit comprises a support and, on a side opposite to the support, a layer of a protective material.
• This layer protects the circuit components against soiling. It is also through it that the circuit can be supported on one of the windows, the bearing surface is thus made uniform and large area. Preferably, a gas vacuum, at least partial, prevails between the two panes.
• the circuit comprises at least one connector not extending opposite a visible area of the panes and connecting together parts of the circuit extending opposite the visible area.
• the connector is returned to a part of the item hidden from view. For example, it will be a window amount if the window is the element. This feature further enhances the architectural integration of the device within the building.
• the element comprises a circuit control module accessible from outside the element.
• a building wall which comprises at least one display device according to the invention.
• a building which comprises at least one wall according to the invention.
• a method of manufacturing an element is also provided, in particular for a building, in which there are two windows and an electronic circuit comprising diodes able to display at least a portion of a video image by means of the diodes. , so that the two panes extend facing one another forming a double glazing and that the circuit extends opposite a visible area of the windows and between the two panes.
• FIG. 1 is a perspective view of a building in its environment and whose facade comprises a display device according to a preferred embodiment of the invention
• FIG. 2 is a view showing a portion of the facade as seen from inside the building of Figure 1;
• Figure 3 is a partial vertical sectional view of the facade of the building of Figure 1;
• FIG. 4 is a partial perspective view of the electronic circuit of the facade of FIG. 3;
• Figure 5 is an elevational view of part of the facade of the building of Figure 1;
• FIG. 6 is a view on a larger scale of the detail D of FIG. 5 showing the arrangement of the diodes.
• FIG. 7 to 14 illustrate respective steps of the method according to the invention for the manufacture of an element of the facade of the building of Figure 1 and the establishment of this element on the building.
• the building 2 illustrated in Figure 1 has on its respective sides several facades which are here four in number.
• the facade 4 is a facade according to the invention insofar as it comprises a video image display device.
• This device 6 is visible in particular in Figures 2, 3 and 5.
• the facade includes several building elements which are here formed by windows 8. These windows extend from top to bottom depending on the height of the facade of the building and from one side to the other side of the facade along its width. The windows extend in the extension of each other in both directions and for example in the same plane for most of them, even for all if the facade is flat.
• Each window 8 comprises two windows 10, 12 in particular visible in Figure 3.
• By “window” means in this case a transparent panel made of glass. But it can realize such a window in a material other than glass and for example plastic or plastic.
• the two panes 10, 12 are flat and identical to each other. They each extend in a vertical plane, facing one another, parallel to each other and at a distance from one another. Their contours are superimposed.
• the windows here have a rectangular shape as shown in Figure 5.
• the facade may have windows 8 of at least two types having in particular different dimensions.
• the facade is formed geometrically by the reproduction of a rectangular mesh comprising in the upper part a weak window. height and in the lower part a window of great height.
• the two windows of the mesh have the same width which is in this case about 2 meters.
• the height of the small window is in this case of 1, 05 meter while the height of the large window is in this case of 3.05 meters.
• the total height of the mesh is 4.10 meters in the present example.
• an electronic circuit 13 comprising units such as the unit 14 shown in part in FIG. 4.
• these units are in the form of identical elongated straight bars between they.
• the bars 14 are here arranged horizontally in the same vertical plane, being all parallel to each other and at a distance from each other. It will be observed that the bars, as they appear in the visible zone of the window as shown in FIG. 2 (that is to say, opposite the visible part of the windows), are devoid of any connection between them or electrical or electronic connection in this visible area.
• the electronic circuit 13 associated with each window 8 comprises a member interconnecting the bars 14 and which is housed in a portion of the window concealed from view. For each pair of consecutive bars 14 in the succession, the space delimited between these two bars is thus left entirely free. It is delimited at its ends only by the uprights 16 of the window.
• Each bar 14 comprises identical diodes 18 and regularly spaced from each other.
• the center distance e illustrated in Figures 4 and 6, and designating the distance between the axes of the successive diodes, is 5 centimeters. This spacing will preferably be chosen so that it is large compared to the actual dimensions of the diodes. Thus, if the diameter of each diode is less than 1 centimeter, it is seen that this center distance is equal to five times the diameter of the diodes.
• the bar 14 comprises a support 20 or a substrate to which the diodes are attached.
• the support 20 is semi-transparent.
• Each bar 14 also carries electronic components 22, 24 known in themselves and which serve to display the image by the diodes 18.
• the diodes form a network pixels and will each be one of the elements of the image to display.
• the diodes are light emitting diodes, preferably SMD (Surface Mounting Dots) type.
• SMD Surface Mounting Dots
• Each diode is surmounted by a primary optical element 26 of the lens type which makes it possible to direct the light emitted by the diode to the privileged areas for viewing the screen. In this case, it is to send the light in opposite directions to that of the building and also not to send the light to the sky.
• the circuit 13, as well as each bar 14, is able to control the display of the part of the image by means of the diodes 18. It is able to control the diodes, diode by diode, that is to say capable of driving each diode independently of all the others, in particular to be able to display different successive images by means of the same diodes.
• the circuit 13 incorporates a layer 30 of a transparent material which is in this case flexible silicone.
• This protective layer extends from the side of the circuit opposite the support 20. It therefore extends on the external side with reference to the position of the circuit when it is in place on the facade.
• the window 12 is arranged in a horizontal position.
• the bars 14 with the support 20 in contact and resting on the pane 12 are installed on the pane 12.
• the diodes 18 extend on the side of the support 20 opposite the pane 12.
• the bars 14 are installed in the position they are intended to have on the glass.
• the bars 14 extend parallel to each other and at a distance from each other.
• Each bar 14 has two longitudinal ends 32 protruding from the corresponding edges of the window 12.
• the second pane 10 is then installed on the assembly.
• the upper pane 10 bears on the seal 34 and on the layers 30 of the bars 14. It thus closes the space defined between the two panes and between each pair of bars. This closure is achieved through the seal formed with the aforementioned seal 34 and the layers 30.
• the components of the window are of course firmly fixed to each other in a suitable manner.
• the support 20 of the bars 14 makes a surface contact with the external face of the lower or inner pane 12.
• the protective layer 30 makes a surface contact by its external face with the inner face of the glass upper or outer 10. Each bar 14 is thus sandwiched and held firmly between the two panes 10 and 12.
• a connector 40 is connected which connects the ends 32 which are located on the same side of the window, here the left side.
• All the bars 14 of the window are therefore connected to the same connector 40. This connection allows them to be powered and driven for the display of the video image.
• the connector does not extend opposite the visible area of the windows.
• the edge zone of the stack thus constituted is then covered by a frame 42, here of rectangular shape, which covers the stack on the outer side corresponding to the pane 10, on the corresponding inner side to the window 12 and on the edge of the stack.
• This frame forms the two uprights 16 left and right of the window.
• the connector 40 is hidden from view by being housed in the left upright.
• the window in its frame 48.
• This assembly can be done before implementation of the assembly on the facade or, if the frame 48 is already installed on the facade, directly on the latter as illustrated in the Figure 14.
• the window occupies its location.
• the window with its frame 48 is carried by the structure of the building and in particular its beams, floors 51, etc. and suitably connected to this structure.
• the electronic circuits 13 of the various windows 8 are connected to a central control unit 52 which will control the display on the device of the desired contents: still image, animated image, text, ...
• each window 8 has an intermediate control element such as a control card 50 which makes it possible to control the image fraction to be displayed for the window, pixel 18 per pixel 18.
• control cards 50 are themselves controlled by the central member 52 for displaying the image as a whole.
• the control card 50 is accessible from outside the window (with reference to the window) and from inside the building or from the outside to allow maintenance.
• Such a display device forms a screen of very large size and can operate from a video signal of different types, sent for example by a computer or a video player.
• the video signal may have an analog format or digital.
• the device can present color images.
• the diodes in effect can each take several colors to choose from.
• the screen may cover the entire facade or, on the contrary, only a part of it.
• the spacing between the diodes will define the resolution of the display device and the desired level of transparency for the observation of the exterior by the occupants of the building.
• the sizing of the bars 14 and their spacing may be chosen to give the desired level of brightness inside the building through the entry of daylight and sunlight. From inside the building, the display device with its bars 14 has the same appearance as a blind.
• the protective layer 30 of silicone is thermally neutral. It makes it possible to seal the circuit it covers with water and air.
• the distance between the two panes 10, 12 is between 6 and 20 millimeters, and is for example 12 millimeters.
• the basic element 8 used to constitute the display device may be a bay window, a French window or a window. It may be a roof element. It may be different from a window.
• the number of windows is not limited to two so that it can be provided to use the invention in the presence of triple glazing, the third pane being either the outer side or the inner side of the device.
• the invention is applicable to buildings erected on the ground, as well as mobile machines and vehicles.
• the wall may be an external facade, or a facade or inner wall opening for example on a patio.

Applications Claiming Priority (2)

Publications (1)

Family

ID=39739714

Family Applications (1)

Country Status (6)

Families Citing this family (17)

Family Cites Families (17)

• 2008
  • 2008-06-09 FR FR0853814A patent/FR2932307B1/fr not_active Expired - Fee Related
• 2009
  • 2009-06-08 WO PCT/FR2009/051078 patent/WO2010001026A2/fr active Application Filing
  • 2009-06-08 EP EP09772708A patent/EP2301005A2/fr not_active Withdrawn
  • 2009-06-08 CN CN2009801285532A patent/CN102105925A/zh active Pending
  • 2009-06-08 TW TW098119030A patent/TWI537897B/zh not_active IP Right Cessation
  • 2009-06-08 US US12/996,861 patent/US9330585B2/en active Active

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events