CN110248434B - Window glass with transparent conductive film - Google Patents
Window glass with transparent conductive film Download PDFInfo
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- CN110248434B CN110248434B CN201910548569.4A CN201910548569A CN110248434B CN 110248434 B CN110248434 B CN 110248434B CN 201910548569 A CN201910548569 A CN 201910548569A CN 110248434 B CN110248434 B CN 110248434B
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- transparent conductive
- conductive film
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- bus
- electrically connected
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
- H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
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- Joining Of Glass To Other Materials (AREA)
- Surface Heating Bodies (AREA)
Abstract
The invention relates to the technical field of automobile glass, in particular to an automobile windshield capable of defrosting and demisting, and particularly provides a window glass with a transparent conductive film. The window glass comprises a first bent glass plate, a second bent glass plate, an intermediate layer and a transparent conductive film, wherein the transparent conductive film is provided with a first heating area and a second heating area, at least one strip-shaped heating area is arranged in the second heating area, each strip-shaped heating area comprises a first connecting bus, a second connecting bus and at least one isolating membrane area, and the first connecting bus, the at least one isolating membrane area and the second connecting bus are sequentially and electrically connected to form a series-connection conductive path. The invention can solve the design problems of conventional and complicated electrodes and film removal, enables the heating area to be more accurate and the heating power to be adjustable, can heat the area needing to be heated in any size, such as a wiper staying area, does not need to heat other unnecessary areas, and avoids the waste of energy.
Description
The technical field is as follows:
the invention relates to the technical field of automobile glass, in particular to an automobile windshield capable of defrosting and demisting, and particularly provides a window glass with a transparent conductive film.
Background art:
in cold weather, the automobile glass and the architectural glass are easy to frost; or when the humidity in the automobile and the indoor is high and the temperature and the external environment are greatly different, the automobile glass and the building glass are easy to fog; therefore, the view lines and the appearances of the inside and the inside of the automobile are influenced, particularly, the front windshield of the automobile which provides a good view field for a driver is greatly influenced if frosting and fogging phenomena occur on the front windshield, safety accidents are easily caused, and the front windshield of the automobile is required to have the functions of defrosting and demisting. With the development of technology, it is known that an electric current is passed through an electric heating element, such as a silver paste printed heating wire, a metal wire, or a transparent conductive film, disposed on the surface of or inside the automobile glass, so as to heat the automobile windshield by generating heat through the electric heating element, thereby achieving the functions of defrosting and defogging.
In the conventional design of electrically heated window glass, a single transparent conductive film is disposed on most of the surface of a glass substrate, for example, the technical solutions disclosed in patents US6472636(B1), JP3849533(B2) and EP2591637(B1), etc., which can achieve a more uniform heating effect on the whole surface, but the technical solutions of heating in different areas are increasingly applied in actual products, for example, the wiper area of a front windshield of an automobile needs higher heating power to achieve the purpose of faster defrosting, which can be achieved by a method of locally enhancing heating, for example, patent CN101406102(B) adds a conductive hinge line on a heating coating, and patent CN1620840(a) sets at least two additional bus tracks in a local area; this can also be achieved by adding separate heating zones, for example CN101653038(a) heating elements provided with low-resistance conductive elements of conductive wires and/or printed conductive tracks in the surface areas not heated by the electric heating coating, and CN107592985(a) coating the inner surface of the windshield with a flexible polymeric insulating sheet provided with a conductive material in the areas corresponding to the parking positions of the wipers; although the technical solutions disclosed in these patents can realize the heating in different areas, the heating method is only suitable for uniformly heating the areas with regular shapes, and hot spots and other phenomena are easily generated when the areas with irregular shapes are heated, and the conventional heating area is large, so that when additional heating elements such as wires, printed conductive traces and/or flexible polymeric insulating sheets are additionally arranged, the manufacturing cost is increased, and energy waste is caused.
The invention content is as follows:
the invention aims to solve the technical problem of providing a window glass with a transparent conductive film aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a glazing with a transparent conductive film comprising a first curved glass pane, a second curved glass pane, an interlayer and a transparent conductive film, the interlayer being sandwiched between the first curved glass pane and the second curved glass pane, the transparent conductive film being deposited on a first surface of the first curved glass pane in contact with the interlayer or on a second surface of the second curved glass pane in contact with the interlayer, the transparent conductive film being provided with two first and second heating zones which are electrically isolated from one another, characterised in that: a first bus bar, a second bus bar and a third bus bar are further arranged between the first bent glass plate and the second bent glass plate, the first bus bar and the second bus bar are in direct electrical contact with the transparent conductive film in the first heating zone, and the second bus bar and the third bus bar are electrically isolated from the second heating zone; at least one strip-shaped heating area is arranged in the second heating area, each strip-shaped heating area comprises a first connecting bus, a second connecting bus and at least one isolating membrane area, each isolating membrane area is surrounded by a closed annular membrane removing line, one end of the first connecting bus is in direct electrical contact with the second bus, the other end of the first connecting bus is electrically connected with the closest isolating membrane area, one end of the second connecting bus is in direct electrical contact with the third bus, the other end of the second connecting bus is electrically connected with the closest isolating membrane area, and the first connecting bus, the at least one isolating membrane area and the second connecting bus are sequentially and electrically connected to form a series-connection conductive path.
Further, the first heating zone covers at least a visible region of the window pane and the second heating zone covers at least a wiper blade dwell region of the window pane.
Further, the first bus bar is parallel to the second bus bar, and the third bus bar is not parallel to the second bus bar.
Further, the first connecting bus and the second connecting bus are electrically isolated from the second heating zone, respectively.
Further, the strip-shaped heating area comprises a membrane isolating area, the other end of the first connecting bus is electrically connected with one end of the membrane isolating area, and the other end of the second connecting bus is electrically connected with the other end of the membrane isolating area.
Further, the strip-shaped heating zone comprises two isolating membrane regions and a bridging element, the other end of the first connecting bus bar is electrically connected with the closest one of the isolating membrane regions, the other end of the second connecting bus bar is electrically connected with the closest other isolating membrane region, and the two isolating membrane regions are electrically connected through the bridging element.
Further, the strip-shaped heating zone comprises at least three blocker film regions and at least two bridging elements, the other end of the first connecting bus bar is electrically connected with the nearest one of the blocker film regions, the other end of the second connecting bus bar is electrically connected with the nearest other blocker film region, two adjacent blocker film regions are electrically connected through the bridging elements, and two adjacent bridging elements are oppositely arranged in parallel.
Furthermore, the distance between two adjacent bridging elements is 2-100 mm.
Preferably, the thickness of the bridging element is 1-100 μm, and the width is 1-10 mm.
Preferably, the distance between two adjacent isolating film regions is 1-10 mm.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the window glass with the transparent conductive film can solve the design problems of conventional and complicated electrodes and film removal, enables a heating area to be more accurate and heating power to be adjustable, can heat an area needing to be heated in any size, such as a wiper staying area, does not need to heat other unnecessary areas, and avoids energy waste.
Description of the drawings:
FIG. 1 is a schematic top view of a glazing having a transparent conductive film according to the present invention;
FIG. 2 is a partial cross-sectional view of a glazing having a transparent conductive film according to the present invention;
FIG. 3 is an enlarged partial schematic view of a second heating zone according to the present invention;
fig. 4 is a partially enlarged schematic view of fig. 3.
The specific implementation mode is as follows:
the invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, a window glass with a transparent conductive film according to the present invention comprises a first curved glass plate 1, a second curved glass plate 2, an interlayer 3 and a transparent conductive film 4, wherein the interlayer 3 is sandwiched between the first curved glass plate 1 and the second curved glass plate 2, and the transparent conductive film 4 is deposited on a second surface 12 of the second curved glass plate 2, which is in contact with the interlayer 3; it will be appreciated that the transparent conductive film 4 may also be deposited on the first surface 11 of the first curved glass plate 1 in contact with the intermediate layer 3. Meanwhile, the transparent conductive film 4 is provided with a first heating area 41 and a second heating area 42 which are electrically isolated from each other, wherein the first heating area 41 at least covers the visible area of the window glass and is used for heating at least the visible area of the window glass; the second heating area 42 at least covers a wiper blade stop area of the window glass and is used for heating the wiper blade stop area of the window glass; the first heating zone 41 and the second heating zone 42 may be electrically isolated from each other by a stripping line (not shown).
In fig. 1, a first bus bar 5, a second bus bar 6 and a third bus bar 7 are further provided between the first curved glass plate 1 and the second curved glass plate 2, the first bus bar 5 and the second bus bar 6 are in direct electrical contact with the transparent conductive film in the first heating zone 41, and the second bus bar 6 and the third bus bar 7 are both electrically isolated from the second heating zone 42; a power supply (not shown) inputs current into the first heating zone 41 through the first bus bar 5 and the second bus bar 6, thereby achieving electric heating of the first heating zone 41. In particular, the first busbar 5 is arranged along the upper edge 100 of the glazing, the second busbar 6 is close to the lower edge of the first heating zone 41, and the third busbar 7 is close to the lower edge 101 of the glazing; more specifically, the first bus bar 5 is parallel to the second bus bar 6, and the third bus bar 7 is not parallel to the second bus bar 6. For some glazing, the first busbar 5 is parallel to the upper edge 100 of the glazing and the third busbar 7 is parallel to the lower edge 101 of the glazing.
At least one strip-shaped heating area 8 is arranged in the second heating area 42, two ends of each strip-shaped heating area 8 are respectively electrically connected with the second bus bar 6 and the third bus bar 7, and a power supply (not shown) or an additional power supply (not shown) inputs current into each strip-shaped heating area 8 through the second bus bar 6 and the third bus bar 7, so that each strip-shaped heating area 8 is electrically heated, other unnecessary areas in the second heating area 42 do not need to be heated, and energy waste is avoided.
As shown in fig. 3 and 4, each strip-shaped heating zone 8 comprises a first connecting busbar 81, a second connecting busbar 82 and at least one isolating membrane zone 83, each isolating membrane zone 83 is defined by a closed annular membrane-removing line 84, one end of the first connecting busbar 81 is in direct electrical contact with the second busbar 6, the other end of the first connecting busbar 81 is electrically connected with the closest isolating membrane zone 83, one end of the second connecting busbar 82 is in direct electrical contact with the third busbar 7, the other end of the second connecting busbar 82 is electrically connected with the closest isolating membrane zone 83, and the first connecting busbar 81, the at least one isolating membrane zone 83 and the second connecting busbar 82 are electrically connected in sequence to form a series conductive path. The membrane removing area 83 is formed by the membrane removing device, so that the conventional and complicated electrode and membrane removing design problems can be solved, the heating area is more accurate, the heating power is adjustable, the area needing to be heated in any size can be heated, for example, the wiper staying area is heated, other unnecessary areas are not required to be heated, and the energy waste is avoided.
Wherein the strip-shaped heating zone 8 may comprise only one isolating membrane zone 83, said isolating membrane zone 83 extending between the first connecting busbar 81 and the second connecting busbar 82, the other end of the first connecting busbar 81 being electrically connected to one end of the isolating membrane zone 83, the other end of the second connecting busbar 82 being electrically connected to the other end of the isolating membrane zone 83; the strip-shaped heating zone 8 may also comprise two blocker film regions 83 and a bridging element 85, the other end of the first connection busbar 81 is electrically connected to the closest one of the blocker film regions 83, the other end of the second connection busbar 82 is electrically connected to the closest other blocker film region 83, and the two blocker film regions 83 are electrically connected by the bridging element 85; the strip-shaped heating zone 8 may further comprise at least three blocker film regions 83 and at least two bridging elements 85, the other end of the first connection busbar 81 being electrically connected to the nearest one of the blocker film regions 83, the other end of the second connection busbar 82 being electrically connected to the nearest other blocker film region 83, two adjacent blocker film regions 83 being electrically connected by a bridging element 85, two adjacent bridging elements 85 being arranged in parallel opposition. In order to reduce interference, the first connecting bar 81 and the second connecting bar 82 are preferably electrically isolated from the second heating field 42. Specifically, the bridging element 85 may be a metal foil or a printed silver paste; the thickness of the bridging element 85 is preferably 1-100 μm, and more preferably 5-20 μm; the width of the bridging element 85 is preferably 1-10 mm, and more preferably 2-5 mm. When the strip-shaped heating area 8 comprises at least two isolating film regions 83, the distance between two adjacent isolating film regions 83 is preferably 1-10 mm, and more preferably 3-5 mm. When the strip-shaped heating area 8 comprises at least two bridging elements 85, the distance between two adjacent bridging elements 85 is preferably 2-100 mm, and more preferably 10-60 mm.
In fig. 3 and 4, each blocker film region 83 is parallelogram-shaped, preferably rectangular; the present invention is not limited to this, and other suitable shapes may be designed according to actual conditions. Meanwhile, the sheet resistance of the transparent conductive film 4 is preferably 0.1 to 50 Ω/□.
The above description specifically describes a window glass having a transparent conductive film according to the present invention, but the present invention is not limited to the above description, and therefore, any improvements, equivalent modifications, substitutions and the like made in accordance with the technical gist of the present invention are within the scope of the present invention.
Claims (10)
1. A glazing with a transparent conductive film comprising a first curved glass pane, a second curved glass pane, an interlayer and a transparent conductive film, the interlayer being sandwiched between the first curved glass pane and the second curved glass pane, the transparent conductive film being deposited on a first surface of the first curved glass pane in contact with the interlayer or on a second surface of the second curved glass pane in contact with the interlayer, the transparent conductive film being provided with two first and second heating zones which are electrically isolated from one another, characterised in that: a first bus bar, a second bus bar and a third bus bar are further arranged between the first bent glass plate and the second bent glass plate, the first bus bar and the second bus bar are in direct electrical contact with the transparent conductive film in the first heating zone, and the second bus bar and the third bus bar are electrically isolated from the second heating zone; at least one strip-shaped heating area is arranged in the second heating area, each strip-shaped heating area comprises a first connecting bus, a second connecting bus and at least one isolating membrane area, each isolating membrane area is surrounded by a closed annular membrane removing line, one end of the first connecting bus is in direct electrical contact with the second bus, the other end of the first connecting bus is electrically connected with the closest isolating membrane area, one end of the second connecting bus is in direct electrical contact with the third bus, the other end of the second connecting bus is electrically connected with the closest isolating membrane area, and the first connecting bus, the at least one isolating membrane area and the second connecting bus are sequentially and electrically connected to form a series-connection conductive path.
2. A window glass with a transparent conductive film according to claim 1, characterized in that: the first heating zone covers at least a visible region of the window pane and the second heating zone covers at least a wiper blade rest region of the window pane.
3. A window glass with a transparent conductive film according to claim 1, characterized in that: the first bus bar is parallel to the second bus bar, and the third bus bar is not parallel to the second bus bar.
4. A window glass with a transparent conductive film according to claim 1, characterized in that: the first connecting bus and the second connecting bus are electrically isolated from the second heating zone, respectively.
5. A window glass with a transparent conductive film according to claim 1, characterized in that: the strip-shaped heating area comprises a membrane isolating area, the other end of the first connecting bus is electrically connected with one end of the membrane isolating area, and the other end of the second connecting bus is electrically connected with the other end of the membrane isolating area.
6. A window glass with a transparent conductive film according to claim 1, characterized in that: the strip-shaped heating zone comprises two isolating membrane regions and a bridging element, the other end of the first connecting bus is electrically connected with the closest one of the isolating membrane regions, the other end of the second connecting bus is electrically connected with the closest other isolating membrane region, and the two isolating membrane regions are electrically connected through the bridging element.
7. A window glass with a transparent conductive film according to claim 1, characterized in that: the strip-shaped heating zone comprises at least three isolating membrane regions and at least two bridging elements, the other end of the first connecting bus is electrically connected with the closest one of the isolating membrane regions, the other end of the second connecting bus is electrically connected with the closest other isolating membrane region, two adjacent isolating membrane regions are electrically connected through the bridging elements, and two adjacent bridging elements are oppositely arranged in parallel.
8. A window glass with a transparent conductive film according to claim 7, characterized in that: the distance between two adjacent bridging elements is 2-100 mm.
9. A window glass with a transparent conductive film according to claim 6 or 7, characterized in that: the thickness of the bridging element is 1-100 μm, and the width is 1-10 mm.
10. A window glass with a transparent conductive film according to claim 6 or 7, characterized in that: the distance between two adjacent isolation film regions is 1-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548569.4A CN110248434B (en) | 2019-06-24 | 2019-06-24 | Window glass with transparent conductive film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910548569.4A CN110248434B (en) | 2019-06-24 | 2019-06-24 | Window glass with transparent conductive film |
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| Publication Number | Publication Date |
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| CN110248434A CN110248434A (en) | 2019-09-17 |
| CN110248434B true CN110248434B (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910548569.4A Active CN110248434B (en) | 2019-06-24 | 2019-06-24 | Window glass with transparent conductive film |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533686A (en) * | 2013-10-29 | 2014-01-22 | 福耀玻璃工业集团股份有限公司 | Heatable transparent window plate |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5434384A (en) * | 1991-07-22 | 1995-07-18 | Ppg Industries, Inc. | Coated windshield with special heating circuit for wiper arm storage area |
| DE10160806A1 (en) * | 2001-12-11 | 2003-06-26 | Saint Gobain Sekurit D Gmbh | Heating disc with an electrically conductive surface coating |
| US6995339B2 (en) * | 2002-09-18 | 2006-02-07 | Ppg Industries Ohio, Inc. | Heatable wiper rest area for a transparency |
| CN105376884B (en) * | 2015-09-17 | 2018-07-17 | 福建省万达汽车玻璃工业有限公司 | Electrical heating automobile sandwich-glass with shunting busbar |
| CN105357784B (en) * | 2015-09-17 | 2018-02-16 | 福建省万达汽车玻璃工业有限公司 | The uniform electrically heated automobile sandwich-glass of rain brush resting position |
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2019
- 2019-06-24 CN CN201910548569.4A patent/CN110248434B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533686A (en) * | 2013-10-29 | 2014-01-22 | 福耀玻璃工业集团股份有限公司 | Heatable transparent window plate |
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| CN110248434A (en) | 2019-09-17 |
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