JP6288363B1 - Vehicle glass equipment - Google Patents

Abstract

An object of the present invention is to easily manufacture a glass device for a vehicle that has excellent visibility and can quickly remove frost. A glass device for a vehicle (1) includes a pair of glass substrates (2, 3) and a conductive mesh sheet (30) interposed between the pair of glass substrates (2, 3). The conductive mesh sheet 30 has a mesh region 10A including a plurality of openings 15 and a pair of blank regions 10B outside the mesh region. The pair of blank regions 10B protrude outward from the pair of glass substrates 2 and 3 and function as connection terminals. [Selection] Figure 1

Description

  The present invention relates to a glass device for a vehicle such as an automobile, and more particularly to a glass device for a vehicle that has good visibility and is easy to manufacture.

  2. Description of the Related Art Conventionally, a technology has been developed in which a heat generating conductor made of metal such as nichrome wire is embedded in a windshield of an automobile and stretched to remove frost attached to the windshield.

Japanese Utility Model Sho 64-28309

  In the above-described windshield (Patent Document 1), a heating conductor containing nichrome wire is installed between the glass parts (between two glass substrates that are laminated glass). The manufacturing operation is not easy, and it is difficult to obtain a sufficient field of view with such a windshield.

  The present invention has been made in consideration of such points, and has an object to provide a vehicle glass device that has good visibility, can quickly remove frost, and can be easily manufactured. To do.

  The present invention relates to a glass device for a vehicle, a pair of glass substrates, a conductive mesh having a mesh region interposed between the pair of glass substrates and including a plurality of openings, and a transparent base material that supports the conductive mesh. And a conductive mesh sheet comprising: a conductive mesh sheet that heats the conductive mesh by causing a current to flow through the conductive mesh.

  The vehicle according to the present invention is characterized in that the conductive mesh has a pair of blank regions located outside the mesh region and does not include an opening, and each blank region functions as a connection terminal for passing current. Glass equipment.

  The present invention is the glass device for a vehicle, wherein each blank region of the conductive mesh protrudes outward from the pair of glass base materials.

  The present invention is the glass device for vehicles, wherein a blackened layer is formed by blackening treatment on at least the front surface and the back surface of the conductive mesh.

  The present invention is the glass device for vehicles, wherein a blackening layer is formed on the inner surface of each opening of the conductive mesh by a blackening treatment.

  The present invention is the glass device for vehicles, wherein the opening ratio of the mesh area of the conductive mesh is 70% or more.

  The present invention is the glass device for vehicles, wherein the conductive mesh sheet is formed in a band shape, and a plurality of conductive mesh sheets are interposed in a pair of glass substrates.

  ADVANTAGE OF THE INVENTION According to this invention, the glass device for vehicles which has a favorable visual field and is easy to manufacture can be provided.

FIG. 1 is a side sectional view for explaining one embodiment of a vehicle glass device according to the present invention. FIG. 2 is a partially enlarged plan view of FIG. FIG. 3 is a plan view for explaining the conductive mesh. FIG. 4 is a plan view showing a conductive mesh sheet of a vehicle glass device.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings attached to the present specification, for the sake of illustration and ease of understanding, the scale, the vertical / horizontal dimension ratio, and the like are appropriately changed and exaggerated from those of the actual product.

  In the present specification, the terms “plate”, “sheet”, and “film” are not distinguished from each other only based on the difference in names. For example, “sheet” is a concept that includes a member that can be called a plate or a film. Therefore, “conductive mesh sheet” is called a member called “conductive mesh plate” or “conductive mesh film”. It cannot be distinguished only by the difference.

  Furthermore, as used in this specification, the shape and geometric conditions and the degree thereof are specified. For example, terms such as “parallel”, “orthogonal”, “identical”, length and angle values, etc. Without being bound by meaning, it should be interpreted including the extent to which similar functions can be expected.

<< Glass equipment for vehicles >>
Hereinafter, an embodiment of a vehicle glass device according to the present invention will be described with reference to FIGS. 1 to 4.

  The vehicle glass device 1 is composed of a car windshield, a car rear glass, a car side glass, a ship side glass, and the like, and is mainly used in cold regions, and can easily remove attached frost, snow, and the like. Has a good field of view.

  As shown in FIG. 1, such a vehicle glass device 1 includes a pair of glass substrates 2 and 3 and a conductive mesh sheet 30 interposed between the pair of glass substrates 2 and 3.

  Of these, the glass substrates 2 and 3 are made of ordinary glass substrates 2 and 3 used for windshields and the like. The conductive mesh sheet 30 includes the conductive mesh 10 having a mesh region 10 </ b> A including a plurality of openings 15, and a transparent base material 35 that supports the conductive mesh 10.

  The conductive mesh 10 has a pair of blank regions 10B located outside the mesh region 10A, and each blank region 10B does not include the opening 15.

  Incidentally, the mesh region 10A of the conductive mesh 10 has a metal connection element 20 that defines a plurality of openings 15 as described later (see FIG. 3).

  Further, the conductive mesh sheet 30 has a belt shape, and the conductive mesh 10 and the transparent base material 35 constituting the conductive mesh sheet 30 are also formed in a belt shape (see FIG. 4). In the belt-like mesh 10, the mesh region 10 </ b> A extends in a belt shape at the center thereof, and a pair of blank regions 10 </ b> B are formed at a pair of both ends of the mesh region 10 </ b> A. Thus, the some electroconductive mesh sheet 30 formed in strip | belt shape is interposed between a pair of glass substrates 2 and 3. As shown in FIG.

  Further, the pair of blank regions 10 </ b> B of each conductive mesh sheet 30 protrudes outward from the pair of glass substrates 2 and 3 and functions as a connection terminal for flowing a current through the conductive mesh 10.

  That is, by connecting the DC power supply 5 from the outside to the pair of blank regions 10 </ b> B functioning as connection terminals among the conductive mesh sheets 30 of the vehicle glass 1, the conductive mesh 10 of each conductive mesh sheet 30 is connected to the conductive mesh sheet 30. Current can flow. As a result, each conductive mesh 10 generates heat, and frost or snow attached to the outer surface of the vehicle glass 1 can be easily removed.

  In addition, although the example which interposed the some strip | belt-shaped electroconductive mesh sheet 30 between a pair of glass substrates 2 and 3 was shown, it is not restricted to this, A single area which has a big area between a pair of glass substrates 2 and 3 is shown. A conductive mesh sheet 30 may be interposed.

<< Conductive mesh and conductive mesh sheet >>
Next, the conductive mesh and the conductive mesh sheet will be described in further detail. The conductive mesh 10 is a mesh-like material that defines a large number of openings 15. As shown in FIGS. 1 to 3, the conductive mesh 10 includes a number of conductive connecting elements 20 that extend between two branch points 25 and define an opening 15. In particular, in the illustrated example, the conductive mesh 10 is configured as a collection of a number of connecting elements 20 that form branch points 25 at both ends. Then, at the branch point 25, the connection element 20 is connected, whereby the opening 15 is defined. In other words, one opening 15 is defined by being surrounded and divided by the connecting element 20.

  The conductive mesh 10 has conductivity, exhibits some function related to conductivity, and has visible light transparency through the opening 15. As shown in FIG. 1, the conductive mesh 10 is formed on a transparent substrate 35 and forms a conductive mesh sheet 30 together with the transparent substrate 35.

  The transparent substrate 35 is appropriately configured so as to have an appropriate strength and an appropriate transparency. As an example, the thickness of the transparent base material 35 can be 20 μm to 350 μm, and the light transmittance of the transparent base material 35 may be 80% or more. As such a transparent substrate 35, for example, a resin film such as biaxially stretched polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), cyclic polyolefin, acrylic resin, or polycarbonate resin can be used. The biaxially stretched polyethylene terephthalate film is suitable for application as the transparent substrate 35 in that it has moderate transparency and durability against ultraviolet irradiation treatment, heat treatment, and the like. As another example, the thickness of the transparent substrate 35 can be 500 μm to 10000 μm (1 cm). As such a transparent material, for example, glass such as soda glass and potash glass, transparent ceramics such as PLZT, and a quartz plate can be used.

  The conductive mesh 10 having visible light transparency makes it difficult to visually recognize the connecting element 20. On the other hand, the sheet resistance of the conductive mesh 10 is sufficiently low so that the function due to the conductivity expected of the conductive mesh 10 can be sufficiently exhibited. In the case where the conductive mesh 10 is used as described above, the conductive mesh 10 is expressed as follows from the viewpoint of effectively expressing the expected function and ensuring that the conductive mesh 10 has sufficient transparency. Can be designed to First, the line width of the connecting element 20 can be 50 μm or less, preferably 30 μm or less, more preferably 15 μm or less, and even more preferably 10 μm or less. The lower limit of the line width can be, for example, 1 μm or more, preferably 3 μm or more in order to avoid disconnection. Further, the size of one opening 15 defined by the conductive mesh 10 formed using an opaque material can be set to 50 to 2000 μm. Here, the size of one opening 15 is the average of the maximum width and the minimum width of the opening 15 in plan view.

  The dimensions of the conductive mesh 10 such as the line width of the connection element 20 and the size of the opening 15 do not need to be determined by examining the entire area of the conductive mesh 10 and calculating the average value. In consideration of the size of the opening 15 per one defined by the connection element 20 and the like, the overall target to be calculated (line width of the connection element 20, size of the opening 15, etc.) In a section having an area that is expected to reflect the trend, the number may be determined by examining an appropriate number in consideration of the degree of variation of the object to be calculated and calculating the average value. For example, in the conductive mesh 10 manufactured by the manufacturing method described in the next paragraph with the design value described immediately before as a target, 30 points included in a 30 mm × 30 mm region are measured with an electron microscope and averaged. By calculating, the line width of the connection element 20, the size of the opening 15, and the like can be specified.

  The conductive mesh 10 as described above has a desired pattern with respect to a metal film containing copper, aluminum, silver, or an alloy thereof by, for example, vapor deposition, sputtering, foil transfer, coating, or the like. Etching and pasting on transparent substrate 35, or conductive conductive particles (for example, conductive metal particles such as acrylic resin and polyester resin dispersed in conductive metal particles such as silver, copper and nickel) The ink can be formed on the transparent substrate 35 by a conventionally known method such as a method of printing a desired pattern on the transparent substrate 35.

  By the way, the blackening layers 20 a and 20 b may be formed on the connection element 20 that defines the opening 15 on the front and back surfaces of the conductive mesh 10. In this case, after the conductive mesh 10 is formed on the metal film by etching, the blackened layers 20a and 20b can be obtained by performing blackening treatment on the front and back surfaces of the conductive mesh 10.

  The blackened layers 20a and 20b formed on the conductive mesh 10 have an antireflection function and a function of improving the adhesion with adjacent layers.

  Note that the blackening layer 20 c can be formed by applying blackening treatment to the inner surface of the opening 15 of the conductive mesh 10.

<< Operation of this embodiment >>
Next, the operation of the present embodiment having such a configuration will be described.

  First, a plurality of conductive mesh sheets 30 having the conductive mesh 10 described above and the transparent base material 35 that supports the conductive mesh 10 are produced.

  Next, a plurality of conductive mesh sheets 30 are interposed between the pair of glass substrates 2 and 3, and the pair of glass substrates 2 and 3 are fixed by appropriate fasteners. In this way, the vehicle glass device 1 can be easily manufactured. In this case, the pair of blank regions 10 </ b> B of each conductive mesh sheet 30 protrudes outward from the pair of glass substrates 2 and 3.

  Next, the pair of blank regions 10 </ b> B of the image conductive mesh sheet 30 protruding outward from the pair of glass substrates 2 and 3 and the external DC power source 5 are connected. In this case, an electric current can be passed through the conductive mesh 10 of each conductive mesh sheet 30, whereby each conductive mesh 10 generates heat and adheres to the outer surface of the vehicle glass 1. Can be removed.

  Moreover, since each conductive mesh 10 has sufficient visible light permeability, even when the vehicle glass device 1 is used as a windshield of an automobile, a sufficiently excellent field of view can be obtained by the windshield.

  As described above, according to the present embodiment, it is possible to easily and easily manufacture a vehicle glass device that has a sufficiently excellent field of view and can quickly remove frost, snow, or the like.

DESCRIPTION OF SYMBOLS 1 Glass apparatus 2 for vehicles Glass substrate 3 Glass substrate 5 DC power supply 10 Conductive mesh 10A Mesh area 10B Blank area 11 Reference pattern 15 Opening 20 Connection element 20a, 20b, 20c Blackening layer 25 Branch point 30 Conductive mesh sheet 35 Transparent Base material

Claims (5)

In vehicle glass equipment,
A pair of glass substrates;
A conductive mesh sheet that is interposed between the pair of glass substrates and has a mesh region including a plurality of openings, and a transparent base material that supports the conductive mesh, and
By passing an electric current through the conductive mesh, the conductive mesh is heated ,
The conductive mesh has a pair of blank regions that are located outside the mesh region and do not include an opening, and each blank region is disposed to face each other outside the mesh region,
Each blank area of the conductive mesh protrudes outward of the pair of glass substrates together with the corresponding transparent substrate portion, and each blank region is supported by the corresponding transparent substrate portion and functions as a connection terminal for flowing current. A glass device for vehicles. At least vehicle glass according to claim 1, wherein the blackening layer is formed by blackening the pair of surfaces of the conductive mesh.   3. The vehicle glass device according to claim 2, wherein a blackened layer is formed on the inner surface of each opening of the conductive mesh by a blackening treatment.   The vehicle glass device according to any one of claims 1 to 3, wherein an opening ratio of a mesh region of the conductive mesh is 70% or more.   The vehicle glass device according to any one of claims 1 to 4, wherein the conductive mesh sheet is formed in a band shape, and a plurality of conductive mesh sheets are interposed in a pair of glass substrates.

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