CN110168806A - Window glass for vehicle - Google Patents
Window glass for vehicle Download PDFInfo
- Publication number
- CN110168806A CN110168806A CN201880006569.5A CN201880006569A CN110168806A CN 110168806 A CN110168806 A CN 110168806A CN 201880006569 A CN201880006569 A CN 201880006569A CN 110168806 A CN110168806 A CN 110168806A
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- China
- Prior art keywords
- antenna element
- demister
- perpendicular elements
- glass
- glass plate
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
- H01Q1/1278—Supports; Mounting means for mounting on windscreens in association with heating wires or layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/357—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
- H01Q5/364—Creating multiple current paths
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Abstract
Window glass for vehicle of the invention includes: glass plate；Demister is formed on above-mentioned glass plate, is had a pair of of bus and is linked multiple horizontal heater wires of above-mentioned a pair of of bus；At least one perpendicular elements is set to above-mentioned demister, and intersects at least one of above-mentioned horizontal heater wire；First antenna element is formed on above-mentioned glass plate, and with above-mentioned demister capacitive coupling, above-mentioned first antenna element with receive have it is higher than the frequency range of FM, and wavelength be λ1~λ2The mode of broadcast wave of frequency range constitute, the smallest distance in the distance between above-mentioned vertical antenna of the distance between any above-mentioned bus and above-mentioned perpendicular elements is set as Pmin, and when the wavelength shortening rate of above-mentioned glass plate is set as α, meet Pmin < α λ1/2。
Description
Technical field
The present invention relates to window glass for vehicle.
Background technique
Sometimes in the surface setting for for motor vehicle glass pane (glass after especially) for being installed on automobile for removing moisture condensation
Or the demister to freeze and antenna etc. for receiving scheduled electromagnetic wave.Demister has the horizontal direction for extending glass pane
Whole multiple horizontal heater wires.In addition, as antenna, such as sometimes using for receiving DAB (Digital Audio
Broadcasting.Hereinafter referred to as " DAB ") broadcast DAB antenna element, in patent document 1, proposition has DAB antenna element
The for motor vehicle glass pane that part is arranged together with demister.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2014-216805 bulletin
Summary of the invention
Problems to be solved by the invention
But the inventors discovered that, in glass pane as described above, it may occur that such problem below.I.e., it was found that on
It states in such glass pane, answers the electromagnetic wave of received frequency range to swash in horizontal heater wire as standing wave using DAB antenna element
Hair, the receptivity for leading to the problem of DAB antenna element as a result, reduce.The present inventors have additionally discovered that this problem not only exists
In DAB, such as even if in the day for receiving the broadcast wave, the broadcast wave such as DTV with the wave-length coverage than FM high frequency
It is also generated in thread elements.The present invention is to research and develop in order to solve described problem, it is intended that providing a kind of vehicle window glass
Glass is able to suppress this day in the case where being used together antenna element of the reception than the broadcast wave of FM high band with demister
The reduction of the receptivity of thread elements.
Solution for solving the problem
The present invention provides a kind of window glass for vehicle, comprising: glass plate；The demister being formed on the glass plate,
Multiple horizontal heater wires with a pair of of bus and the pair of bus of connection；At least one perpendicular elements is set to described
Demister, and intersect at least one of the horizontal heater wire；First antenna element is formed on the glass plate, and
With the demister capacitive coupling, the first antenna element with receive have it is higher than the frequency range of FM, and wavelength be λ1~λ2
The mode of broadcast wave of frequency range constitute, by the distance between any bus and described perpendicular elements or described vertical
The smallest distance in the distance between antenna is set as Pmin, and when the wavelength shortening rate of the glass plate is set as α, meets
Pmin < α λ1/2。
In addition, "horizontal" of the invention refers to the direction substantially parallel with the setting face of vehicle, " vertical " refers to and " water
It is flat " substantially orthogonal direction.Therefore, "horizontal", " vertical " may not indicate stringent direction, for example, even if referred to as "horizontal",
Can not be strictly parallel with the setting face of vehicle, it can also be slightly tilted.Moreover, the "horizontal", " vertical " meaning this
It is identical in specification.
In the window glass for vehicle, can constitute as follows, by any bus and the perpendicular elements it
Between horizontal distance and the perpendicular elements between horizontal distance in maximum distance when being set as Pmax, meet Pmax <
α·λ1/2。
It in the window glass for vehicle, can constitute as follows, described Pmin, α and λ1Meet 3 λ of Pmin≤α1/
8。
It in each window glass for vehicle, can constitute as follows, can further include the second antenna element, be formed
In on the glass plate, and receive the broadcast wave of the frequency range higher than the frequency range of FM, second antenna element and the demister
Capacitive coupling.
It in the window glass for vehicle, can constitute as follows, the first antenna element and second antenna
Element is powered by shared power supply.
In the window glass for vehicle, the first antenna element and second antenna element can be integrally connected.
In the window glass for vehicle, the distance between the power supply of the first antenna element and the perpendicular elements and
The total of the length of the perpendicular elements can be set as α λ1/ 4 or more.
In the window glass for vehicle, the distance between the power supply of the first antenna element and the perpendicular elements and
The total of the length of the perpendicular elements can be set as α λ2/ 4 or more.
In the window glass for vehicle, the first antenna element can be constituted in a manner of the broadcast wave for receiving DAB, energy
It is enough that the first antenna element is set as 15mm or less at a distance from the demister.
Invention effect
Vehicle according to the invention glass pane is being used together the day for receiving the broadcast wave than FM high band with demister
In the case where thread elements, it is able to suppress the reduction of the receptivity of this antenna element.
Detailed description of the invention
Fig. 1 is the front elevation for being equipped with the rear glass of the automobile of an embodiment of window glass for vehicle of the invention；
Fig. 2 is the figure for indicating the model of glass pane of Examples and Comparative Examples；
Fig. 3 is the curve graph for indicating the receptivity of embodiment 1 and Comparative Examples 1 and 2；
Fig. 4 is the curve graph for indicating the receptivity of embodiment 2,3 and comparative example 1；
Fig. 5 is the curve graph for indicating the receptivity of embodiment 3~5 and comparative example 1；
Fig. 6 is the plan view for indicating the glass pane of embodiment 8；
Fig. 7 is the curve graph for indicating the receptivity of DAB frequency range of embodiment 6~12 and comparative example 1；
Fig. 8 is the figure of the current distribution on the demister for indicate embodiment 6；
Fig. 9 is the figure of the current distribution on the demister for indicate embodiment 7；
Figure 10 is the figure of the current distribution on the demister for indicate embodiment 8；
Figure 11 is the figure of the current distribution on the demister for indicate embodiment 9；
Figure 12 is the figure of the current distribution on the demister for indicate embodiment 10；
Figure 13 is the figure of the current distribution on the demister for indicate embodiment 11；
Figure 14 is the figure of the current distribution on the demister for indicate embodiment 12；
Figure 15 is the curve graph for indicating the receptivity of DAB frequency range of embodiment 13~17 and comparative example 1.
Specific embodiment
Hereinafter, being described with reference to an embodiment of window glass for vehicle of the invention.Fig. 1 is using this embodiment party
The front view of the rear glass of the automobile of the window glass for vehicle of formula.In addition, hereinafter, for ease of description, being with the direction of Fig. 1
The up and down direction of Fig. 1 is known as up and down direction or vertical direction sometimes by benchmark, by the left and right directions of Fig. 1 be known as left and right directions or
Horizontal direction, but the direction does not limit the present invention.
1. window glass for vehicle > of <
As shown in Figure 1, the window glass for vehicle of present embodiment is equipped with demister 2 on glass plate 1 and FM-DAB is total
With antenna element 3 (hreinafter referred to as antenna element).Hereinafter, successively illustrating each component.
< 1-1. glass plate >
Glass plate 1 can utilize the well known glass plate of automobile.For example, heat absorption also can be used as glass plate 1
(hot line absorption) glass, general transparent glass or green glass or UV green glass.But this glass plate 1 needs basis
Use the nation's security standard implementation transmission of visible light of automobile.For example, can be with insolation absorptivity, transmission of visible light etc.
The mode for meeting safety standard is adjusted.Hereinafter, indicating an example of the composition of transparent glass and an example of antisolar glass composition.
(transparent glass)
SiO2: 70~73 mass %
Al2O3: 0.6~2.4 mass %
The mass of CaO:7~12 %
The mass of MgO:1.0~4.5 %
R2The mass of O:13~15 % (R is alkali metal)
It is converted into Fe2O3Total ferric oxide (T-Fe2O3): 0.08~0.14 mass %
(antisolar glass)
The composition of antisolar glass can be set as example on the basis of the composition of transparent glass, will be converted into Fe2O3Total oxidation
Iron (T-Fe2O3) ratio be set as 0.4~1.3 mass %, and by CeO2Ratio be set as 0~2 mass %, by TiO2Ratio
It is set as 0~0.5 mass %, by framework ingredient (the mainly SiO of glass2And Al2O3) be set as having subtracted T-Fe2O3、CeO2And
TiO2Incrementss composition.
In addition, the type of glass plate 1 is not limited to transparent glass or antisolar glass, it can be suitable for selection according to embodiment.Example
Such as, glass plate 1 is also possible to acrylic acid series, polycarbonate-based equal resin window.
In addition, this glass plate 1 other than constituting using single glass plate, is also possible to clamp using multiple glass
The laminated glass of the intermediate coat of resin etc..In addition, the wavelength shortening rate α of glass plate is also changed according to thickness of glass plate etc., example
It is such as about 0.7 in the case where a glass plate is formed with demister, antenna element, among using two glass plate clampings
In the laminated glass of film, about 0.5.
< 1-2. demister >
Then, demister 2 is illustrated.As shown in Figure 1, demister 2 is configured at the center of the vertical direction of glass plate 1
Near, it is formed in a manner of the left and right directions entirety for extending glass plate 1.Specifically, the demister 2 includes along glass plate
1 both side edges and bus 21a, 21b of a pair of of the power supply extended along up and down direction.Here, for ease of description, by left side
Bus be known as the first bus 21a, the bus on right side is known as the second bus 21b.Moreover, between two bus 21a, 21b, it is more
A horizontal cell (horizontal heater wire) 22 separates predetermined space and configures in parallel, by the power supply from bus 21a, 21b, produces
The heat of biological and ecological methods to prevent plant disease, pests, and erosion mist.In addition, being provided with two perpendicular elements 41,42 extended along up and down direction in the demister 2.Here,
For ease of description, the perpendicular elements in left side are known as the first perpendicular elements 41, it is vertical that the perpendicular elements on right side are known as second
Element 42.These perpendicular elements 41,42 are in the top in a manner of intersecting with all horizontal cells 22, and to link
Horizontal cell (hereinafter referred to as topmost horizontal cell) 221 and horizontal cell (hereinafter referred to as lowest part water in bottom
Flat elements) 222 mode extends.
The configuration > of < 1-2-1. perpendicular elements
But standing wave is always generated in demister 2, the length of the wave band of the standing wave due to the horizontal cell 22 of demister 2
Degree.Moreover, the inventors discovered that, aftermentioned antenna element 3, and the antenna element 3 and demisting are configured near demister 2
In the case where 2 capacitive coupling of device or direct-coupling, if the length of horizontal cell 22 is by the received broadcast wave of antenna element 3
The half of wavelength X, that is, the integral multiple of λ/2, then (wherein, antenna element 3 is influenced by the standing wave for resulting from demister 2
Here λ is set as the numerical value of the wavelength shortening rate multiplied by glass plate).That is, if by the received electromagnetic wave of demister 2 in demister
In 2 as the half of the frequency range of antenna element 3 standing wave excite, then the energy fluence that should be excited by capacitive coupling or directly
For coupling the energy supplied from demister 2 to antenna element, the electromagnetic wave of the frequency range of antenna element 3 is trapped in demister 2.Its
As a result, knowing that the receiving sensitivity of antenna element 3 reduces.But such as present embodiment, perpendicular elements are utilized in horizontal cell 22
41,42 divide in the case where, due to the length of the horizontal cell of division, that is, bus 21a, 21b and perpendicular elements 41,42
Interval between interval and adjacent perpendicular elements 41,42, standing wave is controllable, is able to suppress antenna element 3 as a result, will also realize that
The reduction of receiving sensitivity.
In addition, when generate standing wave, and the integral multiple of its frequency become numerical value corresponding with the frequency range of antenna element 3 when, make
It is reduced for the receptivity of antenna, antenna element 3 does not play one's part to the full.But as above-mentioned, by adjusting bus 21a, 21b
Interval between the interval and adjacent perpendicular elements 41,42 of perpendicular elements 41,42, controls the frequency of standing wave, can prevent from connecing
Receive the reduction of performance.Hereinafter, studying the point.
Here, the interval of the first bus 21a and the horizontal direction of the first perpendicular elements 42 are set as the first interval P1, by two
The interval of the horizontal direction of perpendicular elements 41,42 is set as the second interval P2, by the water of the second perpendicular elements 42 and the second bus 21b
Square to interval be set as third interval P3.In addition, these intervals P is set as the mutual interval in lower end.
Moreover, the smallest interval is set as Pmin in this 3 intervals, maximum interval is set as Pmax, by antenna element
The wave-length coverage of 3 DAB broadcast wave is set as λ1~λ2, it is following to meet when the wavelength shortening rate of above-mentioned glass plate 1 is set as α
Any formula in formula (1)~(3) mode, configure perpendicular elements 41,42.
Pmin < α λ1/2 (1)
Pmax < α λ1/2 (2)
Pmin≦α·3λ1/8 (3)
In addition, (α=0.65 is set as) when considering the wavelength shortening rate of general glass plate, with the frequency band III as DAB
Frequency range the corresponding wave-length coverage of 170~240MHz become about 813~1147mm (=α λ1~α λ2)。
Formula (1) indicates the smallest interval Pmin ratio α λ in the interval of divided horizontal cell1/ 2 is small.Therefore, more
In a interval, at least one interval ratio α λ1/ 2 is small, inhibits the reduction of the receptivity of antenna element caused by standing wave as a result,.
Formula (2) indicates the maximum interval Pmax ratio α λ in the interval of divided horizontal cell1/ 2 is small.Therefore, all intervals
Than α λ1/ 2 is small, inhibits the reduction of the receptivity of antenna element caused by standing wave as a result,.That is, the perpendicular elements with formula (1)
Configuration compare, can further improve receptivity.
In addition, formula (3) indicates that the smallest interval Pmin in the interval of divided horizontal cell is 3 λ of α1/ 8 or less.
In the formula (3), the smallest interval Pmin, but interval ratio α λ are had studied1/ 2 is much lower, inhibits day caused by standing wave as a result,
The reduction of the receptivity of thread elements.
In addition, in above-mentioned formula (1)~(3), the main broadcast wave for considering DAB does not consider the broadcast wave of FM.Its reason is such as
Under.The frequency of the broadcast wave of FM is that (corresponding wavelength is λ to 76~108MHz3~λ4), it is contemplated that the wavelength of wavelength shortening rate α is
About 1806~2766mm (=α λ3~α λ4).In contrast, the horizontal cell of general vehicle ought such as perpendicular elements in demister
Immediate vicinity be arranged one when, be divided into 0.5m degree, it is therefore, significantly shorter than λ/2 half-wavelength α of FM broadcast wave.Therefore,
When a perpendicular elements are arranged, the receptivity of FM broadcast wave feels bad the influence of standing wave.In contrast, the broadcast wave of DAB
Wavelength for example it is above-mentioned about 813~1147mm, therefore, be easy influenced by standing wave.Therefore, in present embodiment, mainly with
For the purpose of the raising of the receptivity of the broadcast wave of DAB, above-mentioned interval P setting perpendicular elements 41,42 are considered.
The length > of < 1-2-2. perpendicular elements
Then, the length L of perpendicular elements 41,42 is studied.The length L of perpendicular elements 41,42 and from power supply 31
Length D to the up and down direction of perpendicular elements 41,42 is preferably arranged in a manner of meeting formula below (4), (5).
L+D≧α·λ1/4 (4)
L+D≧α·λ2/4 (5)
In a manner of meeting formula (4), when the length of perpendicular elements, the effective height of antenna is got higher, therefore, Neng Gouti
High receptivity.Moreover, receptivity can be further increased when meeting formula (5).
< 1-3. antenna element >
Then, antenna element 3 is illustrated.The antenna element 3 of present embodiment such as above-mentioned dual-purpose FM antenna and DAB days
Line.Specifically, as following.Firstly, the antenna element 3 is configured at the top of demister 2 in glass plate 1, and including configuration
In the power supply 31 that the ratio center of the upper edge of glass plate 1 keeps left.Moreover, including first extended downward from the power supply 31
Vertical component effect 32 and lower end edge from first vertical component effect 32 first horizontal portion 33 that extends to the left and right of horizontal direction, utilize these
First vertical component effect 32 and first horizontal portion 33, the broadcast wave of primary recipient DAB.In addition, the antenna element 3 has from first
The second horizontal part 34 that the midway of vertical component effect 32 extends to the left, second extended downward from the left end of second horizontal part 34
The position of the substantially J shape of vertical component effect 35 and the third horizontal part 36 extended to the right from the lower end of the second vertical component effect 35 utilizes
The broadcast wave of position primary recipient FM.In addition, first horizontal portion 33 and third horizontal part 36 are along horizontal direction interval
Ground configuration, and it is configured at position roughly the same in up and down direction.
Moreover, these first horizontal portions 33 and third horizontal part 36 from the topmost horizontal cell 221 of demister 2 respectively every
It configures with opening predetermined space S.At this point, the interval S of first horizontal portion 33 and topmost horizontal cell 221 be preferably 15mm hereinafter,
Particularly preferably 10~15mm.Antenna element 3 and demister 2 carry out capacitive coupling as a result, and demister 2 also serves as antenna, because
This, receptivity improves.
In addition, the power supply of above-mentioned antenna element 3 via lead etc. be connected to FM with and DAB tuner (save
Sketch map shows).Amplifier can also be inserted into before tuner.When such, cost can be reduced.In addition, dual-purpose DAB and FM antenna,
Therefore, it can reduce the setting area of antenna element 3.
< 1-4. material >
Demister 2 as described above, each antenna element 3 can by by conductive conductive material in glass
There is the mode of the pattern of scheduled threadiness to be laminated and be formed on the surface of plate 1.As this material, as long as conductive be
Can, it can be suitable for selecting in embodiment, as an example, silver, gold, platinum etc. can be enumerated.Above-mentioned each component can be for example, by
The silver paste of electric conductivity comprising silver powder, glass powder etc. is printed in the surface of glass plate 1 and is burnt into and is formed.
< 1-5. manufacturing method >
Then, illustrate the manufacturing method of the glass pane of present embodiment.The glass plate 1 of the glass pane of present embodiment can
By being shaped using stamping press-processing method, using curved self weight bending method of self weight of glass plate 1 etc..
Here, glass plate 1 is heated near softening point in heating furnace in each method when formed glass sheets 1.It is removing
Before entering in the heating furnace, glass plate 1 is formed as tabular, and the slurry of above-mentioned each material, such as silver paste are printed in the glass
The surface of plate 1.Moreover, by moving in glass plate 1 in heating furnace, formed glass sheets 1, and the silver that glass plate 1 will be printed in
Slurry firing, is capable of forming demister 2, antenna element 3.
2. feature > of <
As more than, in present embodiment, between bus 21a, 21b and perpendicular elements 41,42 by adjusting demister 2
Every the interval between perpendicular elements 41,42, the influence for resulting from the standing wave of demister 2 can reduce, and inhibit antenna element 3
Receptivity reduction.
3. variation > of <
More than, an embodiment of the invention is illustrated, but the present invention is not limited to above embodiment, only
Want without departing from the spirit, so that it may make various changes.In addition, variation below being capable of proper combination.
< 3-1 >
There are two perpendicular elements 41,42 for setting in the demister 2 of above embodiment, but as long as meeting above-mentioned formula (1)
Any one of~(3), the number of perpendicular elements are just not particularly limited.In addition, the length of perpendicular elements is also not particularly limited.
The length of multiple perpendicular elements can also be different.
< 3-2 >
In above embodiment, it is provided with an antenna element 3, but being constructed without for antenna element is particularly limited to.For example,
In above embodiment, using antenna element of the dual-purpose FM with DAB, but sole body can also be classified into.In addition, energy
Enough settings receive the antenna of the broadcast wave of AM and DTV.The especially broadcast wave of DTV as the broadcast wave of DAB,
Wavelength is short, therefore, if it is considered that the wave-length coverage, and configure perpendicular elements in a manner of meeting above-mentioned formula (1)~(5), then can
Enough inhibit the reduction of receptivity caused by the influence of standing wave.In addition, appearance can also only be arranged when from the point of view of the purpose of the present invention
The DAB of influence vulnerable to standing wave antenna or DTV antenna.
In addition, the shape of antenna element is not particularly limited, it can be various shape.But in order to carry out and demister 2
Capacitive coupling is preferably provided with the horizontal part extended along demister.In addition, the position of antenna element 3 is not particularly limited, it can also
To be configured at the downside of demister 2.Alternatively, it is also possible to by antenna element 3 and 2 direct-coupling of demister.
For example, in the vehicle of coupe style, the close level of the setting angle of rear glass, therefore, the acceptance of antenna element 3
It can be easy to be influenced by luggage case and Rear Parcel Shelf (リ ア ト レ イ).Therefore, in coupe style, preferably antenna element 3 is set
It is placed in the top of demister 2.On the other hand, the vehicle for such as lifting back vehicle type, in the subvertical situation of the setting angle of glass
Under, therefore metal part as the luggage case of coupe style does not influence smaller.Therefore, in this case, can also incite somebody to action
Antenna element 3 is set to the lower section of demister 2.
< 3-3 >
In above embodiment, the example that glass pane of the invention is applied to the rear glass of automobile is illustrated, but also can
The glass being enough applied to other than it.
Embodiment
Hereinafter, being illustrated to the embodiment of the present invention.But the present invention is not limited to the following embodiment.
The research > of the length of the division for the horizontal cell that 1. perpendicular elements of < carry out
As above-mentioned, the horizontal cell of demister is divided using perpendicular elements.Moreover, the inventors discovered that, according to division
Horizontal cell length it is different, the standing wave for resulting from demister impacts the receptivity of antenna element.Therefore, with
Under, the relationship of length and receptivity to the horizontal cell of division is studied.
Here, the use of model shown in Fig. 2 being suitable for the number for configuring perpendicular elements, and calculating change perpendicular elements to it
And receptivity when position.The unit of size in Fig. 2 is mm.Moreover, by the frequency band 3 of FM (76~108MHz) and DAB
The receptivity of (174~240MHz) is calculated using three-dimensional electromagnetic field stimulation software (time domain 3D electromagnetic field simulation softward).The mould
In quasi-, it is assumed that with a thickness of the general tempered glass of 3.1mm, and model glass plate.In addition, the line width of demister, antenna element
It is set as 1mm, the shortening rate of glass plate is set as 0.65.As the sequence of simulation, (1) modeling vehicle, dielectric, antenna etc. are carried out,
Material is set, (2) set grid appropriate to vehicle, dielectric, antenna etc. and execute simulation later.The setting of this simulation and
It executes identical in the research of all Examples and Comparative Examples as shown below.
In addition, hereinafter, wavelength is known as shortening wavelength multiplied by the numerical value of shortening rate.Moreover, the frequency range with DAB is corresponding
Shortening wavelength α λ1~α λ2Therefore shorten half-wavelength α λ for 813~1147mm1/ 2~α λ2/ 2 be 406~574mm.In addition,
Shortening wavelength α λ corresponding with the frequency range of FM3~α λ4Therefore shorten half-wavelength α λ for 1806~2566mm3/ 2~α λ4/2
For 903~1283mm.
Moreover, number and position such as following setting perpendicular elements.Hereinafter, with the center of the horizontal direction of demister
It is 0, the position of first bus in left side is set as -465mm, the position of second bus on right side is set as+465mm.In addition, each
Perpendicular elements are configured between topmost horizontal cell and lowest part horizontal cell.In addition, the length of the horizontal cell divided is
The interval P illustrated in above embodiment, therefore, hereinafter, being only illustrated sometimes as " interval P ".
[table 1]
In addition, table 2 below indicates in above-described embodiment 1~5 and comparative example, FM frequency range and the frequency band 3 of DAB
The average value and minimum of receptivity in frequency range.
[table 2]
Firstly, studying embodiment 1 and Comparative Examples 1 and 2.Fig. 3 be indicate they frequency and receptivity relationship
Curve graph.As shown in figure 3, the receptivity in FM frequency range is roughly the same in embodiment 1 and comparative example 2, and good.
On the other hand, the receptivity of comparative example 1 is lower.It is thought that due to, in comparative example 1, the length of the horizontal cell divided
(interval P) is 930mm, falls into shortening half-wavelength α λ corresponding with the frequency range of FM3/ 2~α λ4/ 2 range (903~
1283mm).Therefore, receptivity is substantially influenced by standing wave.
On the other hand, in the frequency range of DAB, the interval P of comparative example 1 is more corresponding than with the frequency range of DAB to shorten half
Wavelength α λ1/ 2~α λ2/ 2 (406~574mm) are big.In addition, two interval P of comparative example 2, which enter, shortens half-wavelength α λ1/ 2~α
λ2The range of/2 (406~574mm).Therefore, above-mentioned formula (1) is not satisfied in Comparative Examples 1 and 2, and receptivity is lower.Especially
The reduction of receptivity near 200MHz is significant.On the other hand, in 3 interval P of embodiment 1, one falls into shortening half
Wavelength α λ1/ 2~α λ2The range of/2 (406~574mm), but two interval P of others are smaller than the range.Therefore, embodiment 1 is full
The above-mentioned formula (1) of foot.As a result, as shown in table 2, the minimum of receptivity is higher than Comparative Examples 1 and 22.
Then, embodiment 2,3 is studied.The number of the perpendicular elements of these embodiments 2,3 is 4, but is spaced P not
Together.That is, only one (540mm) enters above-mentioned shortening half-wavelength α λ in 4 interval P of embodiment 21/ 2~α λ2/ 2 (406~
Range 574mm).On the other hand, 4 interval P of embodiment 3 are than above-mentioned shortening half-wavelength α λ1/ 2~α λ2/ 2 (406~
Range 574mm) is low.Therefore, embodiment 2 meets above-mentioned formula (1), and embodiment 3 meets above-mentioned formula (2).
As a result, as shown in Figure 4.As shown in the figure, all the same in the receptivity of FM frequency range in embodiment 2,3, but
In the frequency range for knowing DAB, in embodiment 2, receptivity reduces in about 180MHz frequency range below.Another party
Higher receptivity is integrally presented throughout the frequency of DAB in face, embodiment 3.Moreover, the receptivity in any frequency range is equal
It is substantially got higher than comparative example 1.
Then, embodiment 4,5 is studied together with the above embodiments 3.The number of the perpendicular elements of these embodiments 4~6
It is different.That is, the number of the perpendicular elements of embodiment 4 is 3,4 interval P, meet above-mentioned formula (3).The perpendicular elements of embodiment 3
Number is that 4,5 interval P meet above-mentioned formula (2).Moreover, the number of the perpendicular elements of embodiment 5 is in 5,6 interval P satisfactions
State formula (3).As a result as shown in Figure 5.
As shown in figure and table 2, it is all satisfied formula (1) and formula (2), but the number of perpendicular elements more increases, receptivity is got over
It improves.For example, embodiment 3 meets formula (2), and is unsatisfactory for formula (3), but compared with the embodiment 4 for meeting formula (3), receptivity
Substantially get higher.Therefore, it is known that as long as at least meeting formula (2), the number of perpendicular elements is more, and receptivity is higher.
The research > of the length of 2. perpendicular elements of <
Then, the research of the length of perpendicular elements is carried out.Hereinafter, preparing embodiment 6~12.They are by perpendicular elements
Number is set as 4, and interval P from being set as 135mm, 164mm, 330m, 164mm, 135mm from left to right.Moreover, as shown in table 3 below,
The length L of perpendicular elements is different.In addition, the length D of the up and down direction from power supply to perpendicular elements is set as 100mm.In addition,
For the formula (4) of the length of perpendicular elements, become L+D≤α λ1/ 4 (203mm) become L+D≤α λ for formula (5)2/4
(287mm)。
[table 3]
It in each perpendicular elements, is extended downward using topmost horizontal cell as starting point, of the horizontal cell of the intersection of table 2
Number indicates the number for not including the horizontal cell of topmost horizontal cell.For example, Fig. 6 indicates embodiment 8 (size such as institute in Fig. 2
Show, identical other than perpendicular elements).Moreover, 6~12 couples of interval P of embodiment are all satisfied formula (2), but embodiment 6,7 is unsatisfactory for and hangs down
The relevant formula of length (4) of straight element, (5).On the other hand, embodiment 8~12 meets above-mentioned formula (4), and embodiment 11,12 is also full
Sufficient formula (5).
For above embodiment 6~12, the receptivity in the frequency range of DAB is calculated as shown in Figure 7.In addition, Fig. 7
In, also illustrate that the length of perpendicular elements is the comparative example 1 of 0m (being not provided with perpendicular elements) as reference.In addition, below
It is indicated in table 4, the average value and minimum of the receptivity in the frequency range of in embodiment 6~12, DAB frequency band III.
[table 4]
As shown in fig. 7, embodiment 6~12 does not have significantly low as comparative example 1 connect in the frequency range of DAB
The frequency range for receiving performance, obtains the receptivity higher than comparative example 1.Wherein, such as embodiment 11,12, if the length of L+D is
Meet the α λ of formula (4)1/ 4 (203mm) or more, then whole throughout the frequency range of DAB, the not decline of receptivity.Wherein,
The length of the L+D of embodiment 12 is the α λ for meeting formula (5)2/ 4 (287mm) or more especially have the higher frequency of receptivity
Range.
Then, it for the current distribution on the demister of embodiment 6~12, is illustrated referring to Fig. 8~Figure 14.Fig. 8~
Figure 14 is to discriminate between the figure of the current distribution on the demister in embodiment 6~12 respectively.Frequency is set as 195MHz.In these figures,
Region enclosed by the dotted line indicates the distribution of the substantially electric current of -60~-30dB, and region in addition to this indicates substantially -30~0dB
Electric current distribution (because be not readily apparent (color) differentiation, be represented by dotted lines region).
As shown in Fig. 8~Figure 14, as from embodiment 6 to embodiment 12, the region enclosed by the dotted line on demister increases
Add.The lower region of current value increases especially in horizontal cell, inhibits the generation of standing wave.For example, embodiment shown in Figure 14
It is found that current value is lower in the horizontal cell in more than half region in 12, the generation of standing wave is further suppressed.
On the other hand, it for perpendicular elements, is slightly difficult to see that, but with from embodiment 6 to embodiment 12, perpendicular elements
In current value get higher.Therefore, receptivity is got higher.Above point is consistent with the result of above-mentioned Fig. 7.
<research of 3. antenna elements at a distance from demister>
Then, antenna element is studied at a distance from demister.Hereinafter, preparing embodiment 13~17.They will
The number of perpendicular elements is set as 4, and interval P from being set as 75mm, 226mm, 328m, 226mm, 75mm from left to right.Moreover, as below
Shown in table 5, the distance between the first horizontal portion of antenna element and third horizontal part and topmost horizontal cell S are different.In addition,
The distance S of embodiment 13 is 0mm, and therefore, antenna element and demister carry out direct-coupling.
[table 5]
| Distance S (mm) | |
| Embodiment 13 | 0 |
| Embodiment 14 | 5 |
| Embodiment 15 | 10 |
| Embodiment 16 | 15 |
| Embodiment 17 | 20 |
For above embodiment 13~17, the receptivity in the frequency range of DAB is calculated as shown in Figure 15.
In Figure 15, in order to refer to, comparative example 1 is also shown that it has.In addition, indicating the DAB's in embodiment 13~17 in table 6 below
The average value and minimum of receptivity in the frequency range of frequency band III.
[table 6]
As shown in figure 15, in the frequency range of DAB, embodiment 13~17 does not have significant low as comparative example 1
The frequency range of receptivity obtains the receptivity higher than comparative example 1.Wherein, such as embodiment 13~16 it is found that distance S is
When 15mm or less, throughout the frequency range integrally not decline of receptivity of DAB.
Symbol description
1: glass plate
2: demister
21a: bus
21b: bus
22: horizontal cell (horizontal heater wire)
3: antenna element
41,42: perpendicular elements
Claims (9)
1. a kind of window glass for vehicle, wherein include:
Glass plate；
The demister being formed on the glass plate has a pair of of bus and links multiple horizontal heating of the pair of bus
Line；
At least one perpendicular elements is set to the demister, and intersects at least one of the horizontal heater wire；With
First antenna element is formed on the glass plate, and with the demister capacitive coupling or direct-coupling,
The first antenna element has and wavelength higher than the frequency range of FM for λ can receive1~λ2Frequency range it is wide
The mode for broadcasting wave is constituted,
It will be the smallest in the distance between described vertical antenna of the distance between any bus and the perpendicular elements
Distance is set as Pmin, and when the wavelength shortening rate of the glass plate is set as α, meets Pmin < α λ1/2。
2. window glass for vehicle according to claim 1, wherein
It will be in the horizontal distance between the horizontal distance and the perpendicular elements between any bus and the perpendicular elements
Maximum distance when being set as Pmax, meet Pmax < α λ1/2。
3. window glass for vehicle according to claim 1, wherein
Described Pmin, α and λ1Meet 3 λ of Pmin≤α1/8。
4. window glass for vehicle described in any one of claim 1 to 3, wherein
Also there is the second antenna element of the broadcast wave for being formed on the glass plate and receiving the frequency range higher than the frequency range of FM,
Second antenna element and the demister capacitive coupling.
5. window glass for vehicle according to claim 4, wherein
The first antenna element and second antenna element are powered by shared power supply.
6. window glass for vehicle according to claim 5, wherein
The first antenna element and second antenna element can be integrally connected.
7. window glass for vehicle described according to claim 1~any one of 6, wherein
The conjunction of the length of the distance between the power supply of the first antenna element and the perpendicular elements and the perpendicular elements
It is calculated as α λ1/ 4 or more.
8. window glass for vehicle described according to claim 1~any one of 6, wherein
The conjunction of the length of the distance between the power supply of the first antenna element and the perpendicular elements and the perpendicular elements
It is calculated as α λ2/ 4 or more.
9. window glass for vehicle described according to claim 1~any one of 8, wherein
The first antenna element is constituted in a manner of it can receive the broadcast wave of DAB,
The first antenna element is 15mm or less at a distance from the demister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210066629.0A CN114421126A (en) | 2017-01-11 | 2018-01-11 | Window glass for vehicle |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017002945A JP6879744B2 (en) | 2017-01-11 | 2017-01-11 | Vehicle window glass |
| JP2017-002945 | 2017-01-11 | ||
| PCT/JP2018/000467 WO2018131645A1 (en) | 2017-01-11 | 2018-01-11 | Automobile window glass |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210066629.0A Division CN114421126A (en) | 2017-01-11 | 2018-01-11 | Window glass for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110168806A true CN110168806A (en) | 2019-08-23 |
Family
ID=62839994
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210066629.0A Pending CN114421126A (en) | 2017-01-11 | 2018-01-11 | Window glass for vehicle |
| CN201880006569.5A Pending CN110168806A (en) | 2017-01-11 | 2018-01-11 | Window glass for vehicle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210066629.0A Pending CN114421126A (en) | 2017-01-11 | 2018-01-11 | Window glass for vehicle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3570369A4 (en) |
| JP (1) | JP6879744B2 (en) |
| CN (2) | CN114421126A (en) |
| WO (1) | WO2018131645A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7296540B2 (en) * | 2019-12-27 | 2023-06-23 | Ａｇｃ株式会社 | vehicle window glass |
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|---|---|---|---|---|
| EP1387432A1 (en) * | 2002-07-31 | 2004-02-04 | Robert Bosch Gmbh | Automobile antenna device for receiving AM, FM and television signals |
| JP2006197184A (en) * | 2005-01-13 | 2006-07-27 | Asahi Glass Co Ltd | On-vehicle glass antenna |
| JP2008182682A (en) * | 2006-12-27 | 2008-08-07 | Asahi Glass Co Ltd | On-glass antenna for automobile |
| EP2173008A1 (en) * | 2007-06-22 | 2010-04-07 | Asahi Glass Company, Limited | High frequency glass antenna for automobiles |
| CN102017293A (en) * | 2008-09-16 | 2011-04-13 | 中央硝子株式会社 | Glass antenna for vehicle |
| WO2011099423A1 (en) * | 2010-02-10 | 2011-08-18 | セントラル硝子株式会社 | Window-embedded antenna for vehicle |
| CN102171887A (en) * | 2008-10-02 | 2011-08-31 | 中央硝子株式会社 | Vehicular glass antenna |
| JP2015142246A (en) * | 2014-01-29 | 2015-08-03 | セントラル硝子株式会社 | Gas antenna |
| WO2016190064A1 (en) * | 2015-05-22 | 2016-12-01 | 日本板硝子株式会社 | Vehicle window glass and glass antenna for dab |
| EP3101733A1 (en) * | 2014-01-27 | 2016-12-07 | Central Glass Company, Limited | Glass antenna |
| EP3101728A1 (en) * | 2015-06-05 | 2016-12-07 | Asahi Glass Company, Limited | Glass antenna for vehicle and rear window glass with glass antenna for vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6123457B2 (en) | 2013-04-25 | 2017-05-10 | セントラル硝子株式会社 | Glass antenna for automobile |
-
2017
- 2017-01-11 JP JP2017002945A patent/JP6879744B2/en active Active
-
2018
- 2018-01-11 CN CN202210066629.0A patent/CN114421126A/en active Pending
- 2018-01-11 EP EP18739175.0A patent/EP3570369A4/en active Pending
- 2018-01-11 WO PCT/JP2018/000467 patent/WO2018131645A1/en unknown
- 2018-01-11 CN CN201880006569.5A patent/CN110168806A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1387432A1 (en) * | 2002-07-31 | 2004-02-04 | Robert Bosch Gmbh | Automobile antenna device for receiving AM, FM and television signals |
| JP2006197184A (en) * | 2005-01-13 | 2006-07-27 | Asahi Glass Co Ltd | On-vehicle glass antenna |
| JP2008182682A (en) * | 2006-12-27 | 2008-08-07 | Asahi Glass Co Ltd | On-glass antenna for automobile |
| EP2173008A1 (en) * | 2007-06-22 | 2010-04-07 | Asahi Glass Company, Limited | High frequency glass antenna for automobiles |
| CN102017293A (en) * | 2008-09-16 | 2011-04-13 | 中央硝子株式会社 | Glass antenna for vehicle |
| CN102171887A (en) * | 2008-10-02 | 2011-08-31 | 中央硝子株式会社 | Vehicular glass antenna |
| WO2011099423A1 (en) * | 2010-02-10 | 2011-08-18 | セントラル硝子株式会社 | Window-embedded antenna for vehicle |
| EP3101733A1 (en) * | 2014-01-27 | 2016-12-07 | Central Glass Company, Limited | Glass antenna |
| JP2015142246A (en) * | 2014-01-29 | 2015-08-03 | セントラル硝子株式会社 | Gas antenna |
| WO2016190064A1 (en) * | 2015-05-22 | 2016-12-01 | 日本板硝子株式会社 | Vehicle window glass and glass antenna for dab |
| EP3101728A1 (en) * | 2015-06-05 | 2016-12-07 | Asahi Glass Company, Limited | Glass antenna for vehicle and rear window glass with glass antenna for vehicle |
| CN106252819A (en) * | 2015-06-05 | 2016-12-21 | 旭硝子株式会社 | Vehicular glass antenna and the rear portion glass pane with Vehicle antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6879744B2 (en) | 2021-06-02 |
| JP2018113591A (en) | 2018-07-19 |
| EP3570369A1 (en) | 2019-11-20 |
| EP3570369A4 (en) | 2020-09-02 |
| WO2018131645A1 (en) | 2018-07-19 |
| CN114421126A (en) | 2022-04-29 |
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