JP2006193338A - Laminated glass and building window structure with digital television receiving antenna using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide laminated glass capable of preventing the degradation of an antenna and the deterioration of the reception performance due to the opening and closing a window when the the antenna for the digital television reception is provided on the window of the building, and to provide a building window structure with the laminated glass. <P>SOLUTION: A telecasting signal received by an antenna pattern is taken out into a room by using the laminated glass 10 having interlayers 2a and 2b which are interposed between 2 glass plates 1a and 1b and between which a film having an antenna pattern and a 1st electrode is sealed and capacity-coupling the 1st electrode and an 2nd electrode. The building window structure uses the laminated glass. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a laminated glass having a digital television broadcast receiving antenna and an architectural window structure with a digital television broadcast receiving antenna using the laminated glass.

  Terrestrial television broadcasting was started on a trial basis from the end of 2004. Digital broadcasting will begin in earnest at the end of 2005, and will be completely switched from analog broadcasting in 2011. In conventional analog broadcasting, radio waves are received by an antenna installed on a roof, and a signal is transmitted to a television tuner by a cable arranged in a building.

  However, the antenna installed on the roof is likely to be damaged due to the influence of wind due to the passage of typhoons and low pressure, the influence of birds and small animals, and the like. Also, rusting occurs due to secular change and reception performance deteriorates.

  In contrast to the antenna on the roof that is easily affected by external factors as described above, it has been proposed to provide an antenna in a building window (see, for example, Patent Document 1). These antennas have insufficient reception sensitivity, and until now, the antennas actually provided on the windows have not been used. A major factor for insufficient reception sensitivity is that the conventional radio wave was an analog radio wave. For this reason, it is assumed that it is possible to consider receiving TV broadcasts again through the architectural windows when the radio waves change from analog radio waves to digital radio waves.

JP-A-5-183323

  In principle, it can be estimated that an antenna provided on a window for receiving a conventional analog radio wave can also receive a digital radio wave. That is, unlike analog radio waves, digital radio waves have less restrictions on directivity, so it is considered that reception is possible if the sheet has an antenna pattern covering a certain area.

  However, since the antenna provided on the conventional window is exposed to the indoor side or the outdoor side, the durability is not sufficient. In addition, when digital radio waves are interrupted for a moment, images, sounds, etc. are completely interrupted, so that there is a problem that video and audio are cut off every time the window is opened and closed.

  An object of the present invention is to provide a laminated glass having an antenna suitable for digital broadcasting, and an architectural window structure with a digital TV broadcast receiving antenna using the same.

  The present invention is a laminated glass having a plurality of glass plates and an intermediate film, the glass plates being laminated via the intermediate film, and digitally interposed between the facing surfaces of the plurality of glass plates. Provided is a laminated glass in which a television broadcast receiving antenna is enclosed. In this case, there are a plurality of the intermediate films, and the film having the antenna pattern of the digital TV broadcast receiving antenna and the first electrode connected to the antenna pattern is interposed between the plurality of intermediate films, An antenna pattern of the digital television broadcast receiving antenna and a first electrode connected to the antenna pattern are printed on a surface of the plurality of glass plates facing at least one of the intermediate films, whereby an antenna is formed on the laminated glass. Is preferably provided.

  In addition, it is preferable that the antenna pattern is formed of a mesh assembly having a line width of 5 to 20 μm and an interval between lines of 150 to 300 μm because the antenna pattern is not conspicuous when the window is viewed indoors or outdoors. .

  Furthermore, the present invention provides a laminated glass, and a second television receiver receiving a digital television broadcast reception signal received by the antenna pattern that is capacitively coupled to the first electrode provided in a strip shape on the upper side of the indoor side surface of the laminated glass. And a third electrode connected to a cable for transmitting the signal to the indoor TV tuner, which is fixed indoors so as to face the second electrode, and an architectural window structure with a digital TV broadcast receiving antenna Or the above-mentioned laminated glass in which the first electrode is provided in a band shape on the upper side, and the digital signal fixed in the room so as to face the first electrode, capacitively coupled to the first electrode, and received by the antenna pattern A third electrode connected to a cable for receiving a television broadcast reception signal and transmitting the signal to an indoor television tuner; and with a digital television broadcast reception antenna Chikumado structure, to provide.

  According to the present invention, since the digital TV broadcast receiving antenna is encapsulated in the laminated glass, the antenna can be prevented from deteriorating as a digital TV antenna provided in the architectural window, and an antenna resistant to natural phenomena is provided. it can. Furthermore, by using capacitive coupling, it is possible to prevent disturbance of radio waves due to opening and closing of windows.

  Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an example of the laminated glass of the present invention. The laminated glass 10 in this example is composed of two glass plates 1a and 1b, intermediate films 2a and 2b, and a film 3 with a digital television broadcast receiving antenna. The film 3 is enclosed between the intermediate films 2a and 2b. The glass plates 1a and 1b are laminated via the intermediate films 2a and 2b. As the intermediate film, a synthetic resin film usually made of polyvinyl butyral can be used. When the laminated glass 10 is used for an architectural window, a second electrode 32 is provided on the upper side of the indoor side surface of the glass plate 1a disposed on the indoor side.

  2 is a schematic front view showing an example of an architectural window structure of the present invention using the laminated glass of FIG. 1, FIG. 3 is a partially enlarged front view showing an example of an antenna pattern, and FIG. 4 is an upper schematic cross section of FIG. FIG. On the film 3, a digital television receiving antenna pattern 30 and a strip-shaped first electrode 31 connected to the antenna pattern 30 are formed at a position corresponding to the upper side of the laminated glass. In this example, the film 3 is made of polyethylene terephthalate, and the antenna pattern 30 and the first electrode 31 are made of a copper mesh aggregate provided on the film 3 by a sputtering method. As shown in FIG. 3, in this example, the antenna pattern 30 and the first electrode are formed by an aggregate of meshes having a line width of 10 μm and an interval (p) of 250 μm. A strip-shaped second electrode 32 is formed on the upper side of the indoor glass plate 1a. The first electrode 31 and the second electrode 32 are capacitively coupled, and a digital television broadcast reception signal received by the antenna pattern 30 is transmitted to the second electrode 32 via the first electrode 31. An L-shaped fixture 34 is fixed to the indoor wall slightly above the window fitting position, and the third electrode 33 is fixed to the second electrode 32 via the fixture 34. Has been. In this way, the signal transmitted to the second electrode 32 is transmitted to the indoor TV tuner via the third electrode 33 via the cable 35.

  Thus, even if the position of the antenna pattern 30 is moved by opening and closing the window (the structure in which the laminated glass 10 is fitted in the sash 11), the first and second electrodes 31 provided in a strip shape in the lateral direction that is the moving direction, Since the position of the third electrode 33 with respect to 32 does not change electrically, the influence on the reception sensitivity due to the opening and closing of the window can be reduced. Note that the third electrode 33 and the second electrode 32 may be in contact with each other or may be slightly separated from each other. In the case of contact, a sheet having flexibility is provided on the surface of the third electrode 33 facing the second electrode 32 to prevent deterioration of the second and third electrodes 32 and 33 due to wear. It is preferable because it is possible.

  If the third electrode can be as close to the glass plate 1a as possible, the second electrode can be omitted. In this case, the first electrode and the third electrode are capacitively coupled, and a digital television broadcast reception signal received by the antenna pattern is transmitted to the third electrode via the first electrode.

  FIG. 5 is an upper schematic cross-sectional view showing an example of a window structure made of multi-layer glass using the laminated glass of the present invention. The laminated glass 11 has the same configuration as the example of FIG. The double-glazed glass 20 has a laminated glass 11 on the outdoor side and a single glass plate 41 on the indoor side, and is held by a spacer 42 so that an air layer 43 is interposed therebetween. A surface of the single glass plate 41 on the air layer 43 side is coated with a low radiation film 44 made of a metal oxide.

  Since the low radiation film 44 does not or does not transmit radio waves, it is necessary to avoid the low emission film 44 and transmit radio waves. In this example, the first electrode 31 and the second electrode 32 ′ connected to the antenna pattern provided on the film sealed in the laminated glass 11 are capacitively coupled, and the digital television broadcast received by the antenna pattern is received. A signal is transmitted to the second electrode 32 '. The second electrode 32 ′ is a long conductor formed in a substantially U-shaped cross section, one vertical portion is on the glass plate surface of the laminated glass 10 on the air layer 43 side, and the bottom portion is the double-layer glass 40. Are attached to the multilayer glass 41 so that the other vertical portion is arranged on the indoor side surface of the single glass plate 41.

  As in the previous example, an L-shaped fixture 34 is fixed to the interior wall slightly above the window fitting position, and the second electrode 32 ′ (single plate glass 41) is fixed via the fixture 34. The third electrode 33 is fixed so as to face the side. The second electrode 32 ′ and the third electrode 33 are capacitively coupled, and the digital television broadcast reception signal transmitted to the second electrode 32 by capacitive coupling between the first electrode 31 and the second electrode 32. Is transmitted to the third electrode 33. In this way, the signal transmitted to the third electrode 33 is transmitted to the indoor TV tuner via the cable (not shown).

  In this example, the first electrode 31 and the second electrode 32 ′ are laminated and capacitively coupled across the glass plate on the air layer 43 side of the glass 10, but one vertical portion of the second electrode is matched. It may be inserted into the glass 10 and the first electrode and the second electrode may be capacitively coupled in the laminated glass 10. Moreover, it is a similar structure and you may make a 2nd electrode contact a 1st electrode directly in the laminated glass 10. FIG.

  In the case where it is not possible to sufficiently receive digital TV broadcast radio waves, an amplifier can be separately assembled to the third electrode. In this case, the receiving sensitivity can be improved by attaching the amplifier together with the third electrode to the fixture and supplying power from the outlet on the indoor wall to the amplifier. Furthermore, in view of being able to supply power, the transmitter can be attached together with the third electrode and the amplifier. Thereby, the received signal can be transmitted indoors by radio waves from the transmitting device. Radio waves transmitted indoors can be received by the television receiver by attaching a receiver to the television tuner or the television screen. In this way, the received digital television broadcast radio wave can be wirelessly distributed to the television in the building without using cable wiring. Furthermore, wireless distribution to a plurality of televisions in the building is possible, and there is no need to run cables around each room.

  The antenna pattern and the first and second electrodes in the present invention may be a line having a predetermined width instead of a mesh assembly. When it is desired to show that the antenna is provided in the window, such a line shape may be used, and when it is desired to make an eye-catching, a mesh assembly may be used.

  In the examples described so far, the antenna pattern and the first electrode provided on the film are interposed in the two intermediate films, but the conductive paste is printed on the surface of the glass plate facing the intermediate film. You may print by sputtering of an electrically-conductive material.

  According to the laminated glass of the present invention, an antenna suitable for reception of digital television broadcasting can be provided on the window, so that an antenna that can withstand natural phenomena can be obtained. Furthermore, according to the architectural window structure of the present invention, a digital TV broadcast antenna can be provided in the window, and reception performance can be maintained even by opening and closing the window. Thus, it is possible to obtain a window antenna suitable for television broadcasting in which conventional analog radio waves are switched to digital radio waves.

It is a schematic sectional drawing which shows an example of the laminated glass of this invention. It is a schematic front view which shows an example of the window structure of this invention using the laminated glass of FIG. FIG. 3 is a partially enlarged front view showing an example of an antenna pattern. FIG. 3 is a schematic top sectional view of FIG. 2. It is an upper part schematic sectional view which shows an example of the window structure by the multilayer glass using the laminated glass of this invention.

Explanation of symbols

1a, 1b: Glass plate 2a, 2b: Intermediate film 3: Film with antenna 30: Antenna pattern 31: First electrode 32: Second electrode 33: Third electrode 34: Fixing tool

Claims (7)

  A laminated glass having a plurality of glass plates and an intermediate film, the glass plates being laminated via the intermediate film, and a digital television broadcast receiving antenna between the opposing surfaces of the plurality of glass plates Laminated glass characterized in that is enclosed.   2. The film according to claim 1, wherein there are a plurality of the intermediate films, and a film having an antenna pattern of the digital television broadcast receiving antenna and a first electrode connected to the antenna pattern is interposed between the plurality of intermediate films. Laminated glass as described.   2. The antenna pattern of the digital television broadcast receiving antenna and a first electrode connected to the antenna pattern are printed on a surface of the plurality of glass plates facing the intermediate film. Laminated glass as described.   The laminated glass according to claim 2 or 3, wherein the antenna pattern is formed of an assembly of meshes having a line width of 5 to 20 µm and an interval between lines of 150 to 300 µm.   Laminated glass according to claim 1, 2, 3 or 4 for architectural windows.   A laminated glass according to claim 5 and a second television receiver receiving a digital television broadcast reception signal received by the antenna pattern capacitively coupled to the first electrode provided in a band shape on the upper side of the indoor side surface of the laminated glass An architectural window structure with a digital TV broadcast receiving antenna, comprising: an electrode; and a third electrode fixed to the room so as to face the second electrode and connected to a cable for transmitting the signal to the indoor TV tuner. 6. The laminated glass according to claim 5, wherein the first electrode is provided in a strip shape on the upper side, and fixed in the room so as to face the first electrode, capacitively coupled to the first electrode, and received by the antenna pattern And a third electrode connected to a cable for receiving the received digital TV broadcast reception signal and transmitting the signal to the indoor TV tuner, and an architectural window structure with a digital TV broadcast reception antenna.

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