CN214420180U - Vehicle glass with electric heating and antenna functions - Google Patents
Vehicle glass with electric heating and antenna functions Download PDFInfo
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- CN214420180U CN214420180U CN202022928849.9U CN202022928849U CN214420180U CN 214420180 U CN214420180 U CN 214420180U CN 202022928849 U CN202022928849 U CN 202022928849U CN 214420180 U CN214420180 U CN 214420180U
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Abstract
The utility model discloses a vehicle glass with electrical heating and antenna function, including the glass body, inside electrical heating functional layer and the antenna functional layer of being provided with of glass body, the antenna functional layer is connected with the antenna connection electricity, the resistivity gradual change distribution of electrical heating functional layer, the antenna connection sets up in the lower region of neighbouring electrical heating functional layer resistivity. The utility model discloses a set up the resistance gradual change at the electrical heating functional layer to make generating heat of whole electrical heating functional layer more even, avoid local hot spot to the influence of antenna frequency characteristic, and antenna functional layer is connected with the antenna connection electricity, the antenna connection sets up in the lower region of neighbouring electrical heating functional layer resistivity, the performance of not influencing the antenna module under the even condition of realizing generating heat in compromise electrical heating functional layer, the normal signal reception ability of antenna module has been guaranteed.
Description
Technical Field
The utility model relates to an intelligent transportation equipment technical field, concretely relates to vehicle glass with electrical heating and antenna function.
Background
In cold weather, the vehicle glass is prone to frosting, or when the temperature difference between the interior and the exterior of the vehicle is large, the vehicle glass is prone to fogging, so that the view lines and the appearances of the interior of the vehicle are affected, safety accidents are easily caused, and the front windshield of the vehicle is required to have the defrosting and demisting functions. With the development of technology, there is a technology that an electric current is passed through an electric heating element, such as a silver paste printed heating wire, a metal wire, or a conductive film, disposed on the surface of or inside the vehicle glass, so as to heat the windshield of the vehicle by the heat generated by the electric heating element, thereby achieving the functions of defrosting and defogging.
When the conductive film is used as an electric heating element, a large-head bus and a small-head bus which play a role in converging and distributing current are arranged on the conductive film, and due to the design consideration of the vehicle glass, the small-head bus on the upper edge of the glass is shorter than the large-head bus on the lower edge, so that the heat generated at the top edge of the glass is larger than the heat generated at the bottom edge of the glass; the non-uniform heating of the conductive film may cause local thermoelectricity, thereby affecting the frequency characteristics of the antenna. Meanwhile, with the requirement on the integrated function of the antenna, the antenna device also uses a conductive film, and when the conductive film used as the heating conductive film and the conductive film used as the antenna device work simultaneously, the heat radiation generated by the conductive film used as the heating conductive film can affect the performance of the antenna, so that the signal receiving capability of the antenna is greatly reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a vehicle glass with the functions of electric heating and antenna; the resistance is gradually changed through the electric heating functional layer, so that the heating of the whole electric heating functional layer is more uniform, the influence of a local heat point on the antenna frequency characteristic is avoided, the antenna functional layer is electrically connected with the antenna joint, the antenna joint is arranged in a region adjacent to the electric heating functional layer and with lower resistivity, the performance of the antenna assembly is not influenced under the condition that the electric heating functional layer generates heat uniformly, and the normal signal receiving capacity of the antenna assembly is ensured.
In order to achieve the above object, the utility model discloses the technical scheme who takes includes: the vehicle glass with the electric heating and antenna functions comprises a glass body, wherein an electric heating functional layer and an antenna functional layer are arranged inside the glass body, the antenna functional layer is electrically connected with an antenna connector, the resistivity of the electric heating functional layer is distributed in a gradient mode, and the antenna connector is arranged in an area adjacent to the electric heating functional layer and low in resistivity.
As a preferred technical solution of the present invention: the antenna connector comprises a conductor and an insulating layer coated on the conductor.
As a preferred technical solution of the present invention: the insulating layer is an epoxy radiation-proof material insulating layer.
As a preferred technical solution of the present invention: the electrically heating functional layer includes a first conductive film, and the antenna functional layer includes a second conductive film.
As a preferred technical solution of the present invention: the first conductive film and the second conductive film are both transparent conductive films.
As a preferred technical solution of the present invention: the vehicle glass further comprises a small-head bus and a large-head bus, the small-head bus and the large-head bus are respectively arranged on two sides of the electric heating functional layer, and the resistivity of the electric heating functional layer is gradually increased from the small-head bus side to the large-head bus side.
As a preferred technical solution of the present invention: the electric heating functional layer is provided with uneven membranous layers from a small-end bus side to a large-end bus side, and the thickness of the uneven membranous layers is gradually reduced from the small-end bus side to the large-end bus side.
As a preferred technical solution of the present invention: the electric heating functional layer is provided with a plurality of groups of through hole structures from the small-head bus side to the large-head bus side, each through hole structure comprises at least one through hole, and the size of each through hole is gradually increased from the small-head bus side to the large-head bus side.
As a preferred technical solution of the present invention: the electric heating functional layer is provided with a plurality of groups of through hole structures from the small-head bus side to the large-head bus side, each through hole structure is composed of a plurality of through holes, and the density of the through holes is gradually increased from the small-head bus side to the large-head bus side.
As a preferred technical solution of the present invention: the plane projection of the antenna joint on the glass body is located in an L-shaped area on the upper side or the lower side or the left side or the right side or the periphery of the plane projection of the antenna function layer on the glass body.
As a preferred technical solution of the present invention: the vehicle glass is laminated glass and comprises inner-layer glass, a middle layer and outer-layer glass, and the electric heating functional layer and the antenna functional layer are arranged in the middle layer at intervals.
Compared with the prior art, the utility model discloses at least, including following beneficial effect:
(1) the resistance is gradually changed through the electric heating functional layer, so that the heating of the whole electric heating functional layer is more uniform, the electric heating functional layer as a heating unit is uniform in heating, and the influence of a local heat point on the frequency characteristic of the antenna is avoided.
(2) A large amount of heat radiation of the electric heating functional layer can be absorbed by arranging the insulating layer, so that the influence of the electric heating functional layer on the performance of the antenna is reduced. Therefore, the performance of the antenna can not be influenced under the condition that the electric heating function layer generates heat uniformly, and the normal signal receiving capability of the antenna is ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a first schematic structural diagram of a first conductive film;
FIG. 4 is a second schematic structural diagram of the first conductive film;
fig. 5 is a third schematic structural diagram of the first conductive film.
The parts in fig. 1-5 are marked as 1, vehicle glass, 2, a first conductive film, 3, a second conductive film, 4, an antenna terminal, 5, a first conductive film body, 6, a small-end bus bar, 7, a large-end bus bar, 8, a through hole, 9, a first through hole, 10, a conductive body, 11, an insulating layer, 12, inner glass, 13, an intermediate layer, 14 and outer glass.
Detailed Description
In order to make the objects and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1-2, the embodiment of the utility model provides a vehicle glass with electrical heating and antenna function, including glass body 1, this glass body 1 is inside to be provided with electrical heating functional layer and antenna functional layer, the antenna functional layer is connected with antenna connector 4 electricity, the electrical heating functional layer includes first conductive film 2, the antenna functional layer includes second conductive film 3, second conductive film 3 and antenna connector 4 constitute the antenna module, antenna connector 4 sets up in the region that neighbouring electrical heating functional layer resistivity is low, because there is the resistivity gradual change in first conductive film 2, thereby make the generate heat of whole first conductive film 2 more even, avoid the influence of local hot spot to antenna module frequency characteristic. The antenna joint 4 comprises an electric conductor 10 and an insulating layer 11 coated on the electric conductor 10, the insulating layer 11 is preferably an epoxy radiation-proof material insulating layer, and the electric conductor 10 forms capacitive coupling with the second conductive film 3 as an antenna component by taking the insulating layer 11 as a capacitance medium; the side of the first conductive film 2 away from the antenna connector 4 generates relatively less heat radiation due to relatively higher resistivity, and the side has less influence on the performance of the antenna component; although the resistivity of the side close to the antenna joint 4 is relatively small and the generated heat radiation is relatively large, the conductive body 10 of the antenna joint 4 is coated with the epoxy radiation-proof material insulating layer 11, so that a large amount of heat radiation can be absorbed, and the influence of the side on the performance of the antenna assembly is limited.
The antenna function layer can be an antenna used for an AM/FM frequency band, can also be a DTV frequency band antenna, and can also be one of application scenes such as an ETC antenna, a 5G antenna, a vehicle networking V2X antenna, a GNSS positioning antenna, a GPS Beidou antenna and the like or any combination of the application scenes. The first conductive film 2 and the second conductive film 3 are preferably transparent conductive films. The vehicle glass is preferably laminated glass and comprises inner layer glass 12, an intermediate layer 13 and outer layer glass 14, wherein the first conductive film 2 and the second conductive film 3 are arranged in the intermediate layer 13 at intervals. The first conductive film 2 is close to the outer side of the inner glass 12, and the second conductive film 3 is close to the inner side of the outer glass 14.
Example 1
As shown in fig. 3, the first conductive film 2 includes a first conductive film body 5, a large-head bus 7 and a small-head bus 6 are further disposed on the glass body 1, the large-head bus 7 and the small-head bus 6 are respectively disposed on two sides of the first conductive film 2, and the large-head bus 7 may be mounted on a front windshield of a vehicle, and is located on a lower side or an upper side of the glass body 1 of the front windshield; the small-head bus 6 can be arranged on a front windshield of a vehicle and is positioned at the upper side or the lower side of a glass body 1 of the front windshield, the plane projection of the antenna joint 4 on the glass body 1 is positioned in an L-shaped area of the antenna functional layer at the upper side or the lower side or the left side or the right side or the periphery of the plane projection of the glass body 1; the large-head bus bar 7 is arranged on the side far away from the second conductive film 3, and the resistivity of the first conductive film body 5 gradually increases from the small-head bus bar 6 side to the large-head bus bar 7 side, namely the area resistivity adjacent to the large-head bus bar is the largest, and the area resistivity adjacent to the small-head bus bar is the smallest; the heat radiation is inversely proportional to the resistance (with a constant applied voltage U, the reference heat formula Q ═ U2R x T, R means resistance, T means time), the heat generated at the upper edge of the glass is greater than the heat generated at the lower edge of the glass because the small-end bus bar 6 located at the upper edge of the glass is shorter than the large-end bus bar 7 located at the lower edge of the glass; the resistivity of the first conductive film body 5 gradually increases from the small-head bus 6 side to the large-head bus 7 side, so that the first conductive film area close to the small-head bus 6 side has better thermal conductivity than the first conductive film area close to the large-head bus 7 side, thereby reducing the heat difference generated by different bus lengths and being beneficial to the first conductive film 2 to achieve the effect of uniform heating; further, heat radiation due to the first conductive film 2 may affect the antenna function layer, but epoxy resistsThe radiation material insulating layer can absorb a large amount of thermal radiation, thereby reducing the influence of the first conductive film 2 on the antenna performance. Therefore, the performance of the antenna component is not affected under the condition that the first conductive film 2 realizes uniform heating, and the normal signal receiving capacity of the antenna component is ensured; the epoxy radiation-proof material insulating layer 11 comprises the following preparation raw materials in parts by weight: 50-60 parts of epoxy resin, 0.5-1 part of nano iron, 4-6 parts of nano silicon dioxide and 1-2 parts of chopped carbon fiber, has excellent insulating property and aging resistance, can avoid local breakdown and improves the use safety.
The first conductive film body 5 may have a trapezoidal or approximately trapezoidal shape or other shape along a section from the small-head bus bar 6 side to the large-head bus bar 7 side. The first conductive film body 5 is provided with an uneven film layer along the small-head bus bar 6 side to the large-head bus bar 7 side, the thickness of the uneven film layer can be gradually reduced from the small-head bus bar 6 side to the large-head bus bar 7 side, namely, the thickness of the first conductive film body 5 is gradually reduced along the side far away from the antenna joint 4, and the conductive substance is reduced due to the reduction of the thickness of the conductive film, the conductivity is reduced, and therefore the resistivity is increased. The resistance gradual change that realizes through this scheme can be so that the electrical heating functional layer as heating element generates heat evenly, avoids local hot spot to the influence of antenna module frequency characteristic, can reduce simultaneously and influence the antenna module performance for the receptivity of antenna module is not influenced or is deteriorated, with the reliability of ensureing the antenna module.
Example 2
As shown in fig. 4, the difference from embodiment 1 is that in this embodiment, a plurality of sets of through hole structures are disposed on the first conductive film body 5 along the small-head bus bar 6 side to the large-head bus bar 7 side, each through hole structure is composed of at least one through hole, and the size of each through hole gradually increases from the small-head bus bar side to the large-head bus bar side, for example, each through hole structure may be a through hole array, each through hole array is composed of a plurality of through holes 8, each through hole array composed of through holes 8 may be a regular array or an irregular array, the number of through holes 8 in the plurality of sets of through hole arrays is equal, and the size of the through holes 8 gradually increases from the small-head bus bar 6 side to the large-head bus bar 7 side; that is, the etched through-hole 8 is relatively large in size on the first conductive film 2 on the side away from the antenna connector 4, whereas the through-hole is not etched or the size of the through-hole 8 is small on the first conductive film 2 on the side close to the antenna connector 4. Specifically, the first conductive film 2 with gradually changed resistance can be regarded as being roughly divided into several regions by dotted lines, a through hole array is arranged in each region, the size of an etched through hole 8 on the first transparent conductive film far away from the antenna joint 4 is relatively large, and as the area of the through hole is large, the conductive substance is relatively more, and the conductive substance is lost by etching the through hole 8, so that the resistivity is increased, and the conductive capacity is reduced; on the other hand, on the first conductive film 2 close to the antenna terminal 4, the through holes 8 are not etched or the size of the through holes 8 is small, and the increase of the resistivity is small in the case of the same number of through holes 8 as that of the through holes 8 far from the first conductive film 2. The resistance gradual change that realizes through this scheme for the transparent conducting film as heating element generates heat evenly, avoids local hot point to the influence of antenna module frequency characteristic, can reduce simultaneously and influence the antenna module performance, makes the receptivity of antenna module not influenced or deteriorate, with the reliability of ensureing the antenna module.
Example 3
As shown in fig. 5, the difference from embodiment 1 is that the present embodiment is that a plurality of sets of via structures are provided in the first conductive film body 5 along the small-head bus bar 6 side to the large-head bus bar 7 side, the via structures are composed of a plurality of via holes, and the density of the via holes gradually increases from the small-head bus bar side to the large-head bus bar side. The through hole structure array, for example, the through hole structure is a through hole array, the through hole is a first through hole, that is, the through hole array is composed of a plurality of first through holes 9, the through hole array composed of the first through holes 9 may be a regular array or an irregular array, the sizes of the first through holes 9 in the plurality of groups of through hole arrays are equal, the density of the first through hole 9 structure is gradually increased from the small-head bus 6 side to the large-head bus 7 side, and the density size refers to the number of the through hole structures in the same certain area; in terms of development, the first conductive film 2 with gradually changed resistance can be regarded as being roughly divided into several areas by dotted lines, a through hole array is arranged in each area, the density of through holes 8 etched on the first conductive film 2 on the side far away from the antenna joint 4 is relatively large, and the resistivity of the first conductive film is increased due to the reduction of conductive substances; on the first conductive film 2 close to the antenna joint 4 side, because the through holes 8 are not etched on the first conductive film or the density of the through holes 8 is small, the increase amplitude of the resistivity is relatively small, so that the first conductive film 2 generates heat uniformly, the influence of local heat on the frequency characteristic of the antenna assembly is avoided, meanwhile, the influence on the performance of the antenna assembly can be reduced, the receiving capacity of the antenna assembly is not influenced or deteriorated, and the reliability of the antenna assembly is ensured.
In embodiments 2 and 3, the through holes 8 and the first through holes 9 are circular or rectangular, which mainly achieves the purpose of reducing conductive substances, and it should be noted that the thickness of the first conductive film 2 may not be limited to the non-uniform film layer in embodiment one, but may also be a uniform film layer, and only needs to be optimized to achieve the purpose of uniform heat generation according to actual conditions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A vehicle glass with electric heating and antenna functions is characterized in that: the glass comprises a glass body, wherein an electric heating functional layer and an antenna functional layer are arranged inside the glass body, the antenna functional layer is electrically connected with an antenna connector, the resistivity of the electric heating functional layer is distributed in a gradient manner, and the antenna connector is arranged in an area adjacent to the electric heating functional layer and low in resistivity.
2. A vehicle glazing with electrical heating and antenna functions as claimed in claim 1, wherein: the antenna connector comprises a conductor and an insulating layer coated on the conductor.
3. A vehicle glazing with electrical heating and antenna functions as claimed in claim 1, wherein: the electrically heating functional layer includes a first conductive film, and the antenna functional layer includes a second conductive film.
4. A glass for a vehicle having an electric heating and antenna function as claimed in claim 3, wherein: the first conductive film and the second conductive film are both transparent conductive films.
5. A vehicle glazing with electrical heating and antenna functions as claimed in claim 1, wherein: the vehicle glass further comprises a small-head bus and a large-head bus, the small-head bus and the large-head bus are respectively arranged on two sides of the electric heating functional layer, and the resistivity of the electric heating functional layer is gradually increased from the small-head bus side to the large-head bus side.
6. A vehicle glazing with electrical heating and antenna functions as claimed in claim 5, wherein: the electric heating functional layer is provided with uneven membranous layers from a small-end bus side to a large-end bus side, and the thickness of the uneven membranous layers is gradually reduced from the small-end bus side to the large-end bus side.
7. A vehicle glazing with electrical heating and antenna functions as claimed in claim 5, wherein: the electric heating functional layer is provided with a plurality of groups of through hole structures from the small-head bus side to the large-head bus side, each through hole structure comprises at least one through hole, and the size of each through hole is gradually increased from the small-head bus side to the large-head bus side.
8. A vehicle glazing with electrical heating and antenna functions as claimed in claim 5, wherein: the electric heating functional layer is provided with a plurality of groups of through hole structures from the small-head bus side to the large-head bus side, each through hole structure is composed of a plurality of through holes, and the density of the through holes is gradually increased from the small-head bus side to the large-head bus side.
9. A vehicle glazing with electrical heating and antenna functions as claimed in claim 1, wherein: the plane projection of the antenna joint on the glass body is located in an L-shaped area on the upper side or the lower side or the left side or the right side or the periphery of the plane projection of the antenna function layer on the glass body.
10. A glass for a vehicle having an electric heating and antenna function as claimed in any one of claims 1 to 9, wherein: the vehicle glass is laminated glass and comprises inner-layer glass, a middle layer and outer-layer glass, and the electric heating functional layer and the antenna functional layer are arranged in the middle layer at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022928849.9U CN214420180U (en) | 2020-12-09 | 2020-12-09 | Vehicle glass with electric heating and antenna functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022928849.9U CN214420180U (en) | 2020-12-09 | 2020-12-09 | Vehicle glass with electric heating and antenna functions |
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| Publication Number | Publication Date |
|---|---|
| CN214420180U true CN214420180U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022928849.9U Active CN214420180U (en) | 2020-12-09 | 2020-12-09 | Vehicle glass with electric heating and antenna functions |
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| CN (1) | CN214420180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635108A (en) * | 2022-03-10 | 2022-06-17 | 西安应用光学研究所 | Circular optical window film coating method for realizing uniform heating deicing and defrosting |
-
2020
- 2020-12-09 CN CN202022928849.9U patent/CN214420180U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635108A (en) * | 2022-03-10 | 2022-06-17 | 西安应用光学研究所 | Circular optical window film coating method for realizing uniform heating deicing and defrosting |
| CN114635108B (en) * | 2022-03-10 | 2024-03-15 | 西安应用光学研究所 | Circular optical window coating method for realizing uniform heating deicing and defrosting |
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