WO2016072136A1 - Windshield - Google Patents

Abstract

This windshield can have installed thereon an information acquisition device that acquires information from the outside of a vehicle by radiating and/or receiving light. The windshield is provided with: a glass plate that has at least one curved part and that has laminated thereon a mask layer that blocks visibility from the outside of the vehicle and that has at least one opening; an installation member on which the information acquisition device can be installed and at least one part of which is fastened at a position that coincides with the mask layer of the glass plate; and a passage member that has a recessed part that, when the installation member is fastened to the mask layer, is for forming with the glass plate a passage that is for the radiation and/or reception of light by the information acquisition device. The information acquisition device is arranged on a vehicle-inside surface of the glass plate so as to be capable of acquiring information through the opening. The installation member is provided with a fastening part, at least one part of which is fastened at a position that coincides with the mask layer. At least one part of the fastening part of the installation member, said one part being arranged at the periphery of the recess of the passage member, is fastened to the mask layer with a light blocking member therebetween.

Description

Windshield

The present invention relates to a windshield.

In recent years, the safety performance of automobiles has been dramatically improved, and as one of them, in order to avoid a collision with the preceding vehicle, the distance to the preceding vehicle and the speed of the preceding vehicle are sensed, and automatically when abnormally approaching A safety system has been proposed in which the brake operates. Such a system measures the distance to the vehicle ahead by using a laser radar or a camera. An information acquisition device such as a laser radar or a camera is generally disposed inside a windshield and performs measurement by irradiating infrared rays forward.

In order to prevent such an information acquisition device from being seen from the outside, a mask layer coated with dark ceramic is formed on the inner surface of the glass plate, and the information acquisition device is disposed thereon. Yes. Such a mask layer is generally formed near the periphery and upper center of the glass plate. At this time, an opening is formed in the mask layer, and laser light irradiated and received by the laser radar, infrared light received by the camera, and the like are irradiated or received through the opening. In addition, such an information acquisition device is generally not fixed directly to the mask layer, but is fixed to the mask layer via an attachment member such as a bracket. That is, after fixing the attachment member to the mask layer with an adhesive or the like, the information acquisition device is attached to the attachment member. And an information acquisition apparatus is arrange | positioned in the space closed with the glass plate, the bracket, and the cover by attaching a cover to the attachment member from the vehicle inner side.

JP 2006-327381 A

By the way, in the mounting member as described above, the entire contact portion with the mask layer is not fixed to the mask layer by a fixing material such as an adhesive or a double-sided tape, but only a part thereof is fixed. This is because the fixing of the attachment member only needs to be performed so as not to be detached from the mask layer. Therefore, light may enter from the outside from the portion where no fixing material is provided to the internal space surrounded by the attachment member. In particular, since the windshield is curved, a gap is likely to be generated between the mounting member and the windshield, and this facilitates intrusion of light. If such intrusion of light occurs, it may affect the light transmission / reception by the information acquisition device, which may cause a measurement error. In particular, the mounting member is provided with a recess for forming a passage between the opening of the mask layer as a light passage. If light enters from the vicinity of the recess, measurement errors may occur. There is sex. Such a recess may be provided not in the mounting member but in the information acquisition device, but even in this case, there may be a problem that light enters the recess.

The present invention has been made to solve the above problem, and in a windshield in which an information acquisition device is attached to a mask layer via an attachment member, it is possible to prevent light from entering the attachment member from the outside. The purpose is to provide a windshield that can.

Specifically, the invention 1 provides the following inventions.
<Invention 1>
Item 1. A windshield in which an information acquisition device that acquires information from outside the vehicle by irradiating and / or receiving light can be arranged,
A glass plate that shields the field of view from the outside of the vehicle and has at least one opening, and is curved at least partially;
At least a part is fixed at a position corresponding to the mask layer of the glass plate, and an attachment member to which the information acquisition device can be attached,
When the mounting member is fixed on the mask layer, a passage member having a recess for forming a passage for light irradiation and / or light reception by the information acquisition device between the glass plate,
With
The information acquisition device is arranged on the inner surface of the glass plate so as to be able to acquire information through the opening,
The mounting member includes a fixing portion that is fixed at a position at least partially corresponding to the mask layer,
In the mounting member, the windshield, wherein at least a part of the fixing portion disposed around the recess of the passage member is fixed to the mask layer via a light shielding member.

Item 2. Item 2. The windshield according to Item 1, wherein the passage member is integrally fixed to the attachment member.

Item 3. Item 2. The windshield according to Item 1, wherein the passage member is provided in the information acquisition device.

Item 4. The mounting member is directed from the outside of the glass plate to the information acquisition device, and is irradiated from the information acquisition device toward the glass plate with a first opening through which light received by the information acquisition device passes. A second opening for allowing light to pass through,
The second opening communicates with the recess;
Item 2. The part of the fixing part is configured to partition the first opening and the second opening, and at least part of the fixing part is fixed to the mask layer through the light shielding member. Windshield described in.

Item 5. The attachment member is formed in a rectangular frame shape having a first side, a second side, a third side, and a fourth side, and includes a pair of support parts that support the information acquisition device.
The first side is disposed on the upper side of the glass plate, the third side is disposed on the lower side of the glass plate,
The support portions are disposed on the second and fourth sides,
The first opening is disposed on the first side,
The second opening is disposed on the third side,
Item 5. The windshield according to Item 4, wherein the concave portion is disposed along the third side and communicates with the second opening.

Item 6. Item 6. The windshield according to Item 5, wherein at least a part of the fixing portion disposed on the first side is fixed to the mask layer via the light shielding member.

Item 7. In the fixing portion arranged around the recess,
A lateral light-shielding member extending from one lateral end to the other lateral end of the recess;
A pair of side light-shielding members disposed on both sides of the lateral light-shielding member;
The windshield according to claim 1, wherein the windshield is provided.

Item 8. Item 8. The windshield according to any one of Items 1 to 7, wherein the light shielding member is formed of an adhesive or a double-sided tape.

Item 9. Item 9. The windshield according to Item 8, wherein the light shielding member is an epoxy resin adhesive.

Item 10. The mask layer is configured such that a part of the periphery of the opening is not closed and is opened to the outside.
The windshield according to any one of claims 1 to 7, wherein, in the open portion, the fixing portion of the attachment member is fixed to the glass plate by the light shielding member formed of a double-sided tape.

Item 11. Item 11. The windshield according to Item 8 or 10, wherein the light shielding member is composed of a double-sided tape, and the thickness of the double-sided tape is 0.2 to 0.8 mm.

Item 12. Item 12. The windshield according to any one of Items 1 to 11, wherein the information acquisition device includes a camera, and the camera is configured to acquire information through the opening.

<Invention 2>
In general, in addition to the information acquisition device as described above, a rear view mirror is attached inside the windshield of an automobile. The rear view mirror is provided at substantially the same position as the information acquisition device, that is, at the upper center of the windshield, and is attached to a base member fixed on the mask layer.

By the way, the base member for the rear view mirror and the mounting member for the information acquisition device can be mounted by various fixing materials such as an adhesive and a double-sided tape, but both the base member and the mounting member are substantially the same as the windshield. Since it is attached to the position, there is a problem that the manufacturing process becomes complicated if different fixing materials are used.

Invention 2 is made in order to solve this problem, and it is possible to easily manufacture a windshield in which a base member for a rear view mirror and an attachment member for an information acquisition device are attached on a mask layer. The purpose is to provide a windshield that can be used. Specifically, the invention 2 provides the inventions of the embodiments listed below.

Item 1. A windshield in which an information acquisition device that acquires information from outside the vehicle by irradiating and / or receiving light can be arranged,
A glass plate on which a mask layer that shields a field of view from outside the vehicle and has at least one opening is laminated;
An attachment member fixed on the mask layer of the glass plate and capable of attaching the information acquisition device;
A base member fixed on the mask layer and to which a rear view mirror can be attached;
With
The windshield, wherein the attachment member and the base member are fixed to the mask layer by the same fixing material.

Item 2. Item 2. The windshield according to Item 1, wherein the fixing material is an adhesive.

Item 3. Item 3. The windshield according to Item 2, wherein the adhesive is an epoxy resin adhesive.

Item 4. Item 2. The windshield according to Item 1, wherein the fixing material is a double-sided tape.

<Invention 3>
When the information acquisition device is arranged on the mask layer as described above, the following problems may occur. The windshield as described above is manufactured by applying a mask region on a glass plate and then heating, and then forming a curved surface. At that time, since the mask layer is formed in a dark color such as black, the amount of heat absorbed in the glass plate is larger than that in a region where the mask region is not formed, for example, an opening through which light passes. For this reason, in the region where the mask layer is formed, the residual stress increases during molding, and the glass plate is distorted near the boundary with the opening. As a result, when laser light is irradiated and received, the light may be refracted due to distortion or the like, and there is a possibility that the light cannot be accurately irradiated or received. As a result, the inter-vehicle distance may not be accurately calculated.

Such a problem is not limited to the measurement of the inter-vehicle distance, and may be a problem that may occur in general information acquisition apparatuses that acquire information from outside the vehicle by receiving light such as an optical beacon. In view of this, the invention 3 has been made to solve the above-described problem, and in a windshield to which an information acquisition device that performs light irradiation and / or light reception through an opening in a mask region can be attached, light irradiation and / or An object of the present invention is to provide a windshield that can accurately receive light and accurately process information. Specifically, the invention 3 provides the inventions of the following aspects.

Item 1. A windshield in which an information acquisition device that acquires information from outside the vehicle by irradiating and / or receiving light can be arranged,
A window glass in which a mask layer that shields a field of view from outside the vehicle and has at least one opening is laminated;
An attachment member fixed on the mask layer of the window glass and capable of attaching the information acquisition device;
With
The thermal expansion coefficients of the window glass and the mask material constituting the mask layer are different, and the window glass and the mask layer are formed by heating together,
The information acquisition device is arranged so that information can be acquired through the opening on the inner surface of the window glass.
The windshield, wherein the attachment member is configured so that the information acquisition device can be attached such that a light passage path in the light irradiation and / or light reception is at least 4 mm away from an opening periphery of the mask layer.

Item 2. Item 2. The windshield according to Item 1, wherein the mask region is black.

<Invention 4>
Generally, since the windshield to which the information acquisition device is attached is formed in a curved surface shape, it is not easy to fix the attachment member. That is, since the fixing surface of the mounting member is generally formed into a flat surface, if the mounting member is attached to the curved windshield, the fixing strength between the mounting member and the windshield is reduced or the position is shifted. May occur. A fourth aspect of the present invention has been made to solve such a problem, and an object thereof is to provide a windshield capable of accurately and firmly fixing a mounting member to which an information acquisition device is mounted. To do. Specifically, the invention 4 provides the invention of the aspect hung up below.

Item 1. A windshield in which an information acquisition device that acquires information from outside the vehicle by irradiating and / or receiving light can be arranged,
A mask layer that shields a field of view from outside the vehicle and has at least one opening, and is curved at least partially;
An attachment member fixed at a position corresponding to the mask layer of the window glass and capable of attaching the information acquisition device;
With
The information acquisition device is arranged so that information can be acquired through the opening on the inner surface of the window glass.
The mounting member includes a fixing part at least a part of which is fixed at a position corresponding to the mask layer, and a support part connected to the fixing part and supporting the information acquisition device,
The fixing portion includes a first region at a position corresponding to the support portion, and at least one second region for fixing the mounting member at a position corresponding to the mask layer. .

Item 2. Item 2. The windshield according to Item 1, wherein the second region has lower rigidity than the first region.

Item 3. Item 3. The windshield according to Item 2, wherein the second region has a thickness smaller than that of the first region.

Item 4. Item 3. The windshield according to Item 2, wherein the second region is smaller in width than the first region.

Item 5. Item 3. The windshield according to Item 2, wherein the second region is formed of a material having lower rigidity than the first region.

<Invention 5>
There are various methods for forming the glass plate constituting the windshield, such as a method of bending the glass plate by pressing with a forming die and a method of bending the glass plate by its own weight. In the latter method, a frame-shaped mold is used, and the glass plate is heated after being placed so that only the periphery of the glass plate is supported on the frame. Thereby, in the frame of a shaping | molding die, a glass plate curves below by dead weight, and a curved surface is shape | molded.

However, in this method, strain is formed at the boundary between the peripheral portion of the glass plate supported by the mold and the inner region. For this reason, if the attachment member is attached to a portion where such distortion occurs, the attachment accuracy may be lowered or the attachment strength may be lowered.

A fifth aspect of the present invention has been made to solve the above-described problem. In a windshield in which a curve is formed by its own weight, a windshield that can accurately and firmly attach an attachment member for attaching an information acquisition device. The purpose is to provide. Specifically, the invention 5 provides the inventions of the following aspects.

Item 1. A windshield in which an information acquisition device that acquires information from outside the vehicle by irradiating and / or receiving light can be arranged,
A window glass in which a mask layer that shields a field of view from outside the vehicle and has at least one opening is laminated;
An attachment member fixed at a position corresponding to the mask layer of the window glass and capable of attaching the information acquisition device;
With
The information acquisition device is arranged so that information can be acquired through the opening on the inner surface of the window glass.
The window glass is arranged on a frame-shaped mold and is heated downward in a state where the peripheral edge is supported, so that it is bent downward by its own weight,
The window glass is curved so as to have a bent portion along the peripheral edge inside the peripheral edge,
The windshield, wherein the mounting member is mounted on an inner side than the bent portion.

Item 2. The said window glass plate is provided with the 1st glass plate, the 2nd glass plate opposingly arranged with the said 1st glass plate, and the intermediate film pinched | interposed between both said glass plates, The claim | item 1 or 2 characterized by the above-mentioned. Windshield.

According to the first aspect of the present invention, in the windshield in which the information acquisition device is attached to the mask layer via the attachment member, it is possible to prevent light from entering the attachment member from the outside.

It is sectional drawing of one Embodiment of the windshield which concerns on this invention. It is a top view of FIG. It is sectional drawing of a laminated glass. It is the front view (a) and sectional view (b) which show the amount of doubles of a curved laminated glass. It is a graph which shows the relationship between the general frequency and sound transmission loss of a curved glass plate and a planar glass plate. It is a schematic plan view which shows the measurement position of the thickness of a laminated glass. It is an example of the image used for the measurement of an intermediate film. It is a top view of a glass plate. It is an enlarged plan view of a center mask layer. FIG. 10 is a cross-sectional view of FIG. 9. It is a side view which shows an example of the manufacturing method of a glass plate. It is sectional drawing of a measurement unit. It is a top view of a bracket. It is a graph which shows the distortion of a glass plate. It is another example of the top view of a glass plate. It is a top view of the glass plate to which the base member of the rear view mirror was attached. It is sectional drawing of FIG. It is sectional drawing which shows the other example of the glass plate to which the base member of the rear view mirror was attached. It is sectional drawing which shows the other example of the glass plate to which the bracket was attached. It is a top view which shows the other example of a bracket. It is a side view which shows the other example of the manufacturing method of a glass plate. It is a top view of the shaping | molding die of FIG. It is sectional drawing of the shaping | molding die of FIG. 21 which shows the state which mounted the laminated glass. It is a top view of the other example of a mask layer. It is the figure (a) which looked at the bracket of the other example from the vehicle outer side, and the figure (b) seen from the vehicle inner side. It is the figure which looked at the sensor of the other example from the vehicle outer side.

Hereinafter, an embodiment of a windshield according to the present invention will be described with reference to the drawings. In the windshield according to the present embodiment, an inter-vehicle distance measuring unit is attached to the inside of the glass plate. FIG. 1 is a cross-sectional view of the windshield according to the present embodiment, and FIG. 2 is a plan view of FIG. As shown in FIGS. 1 and 2, the windshield according to the present embodiment includes a glass plate 1 and a mask layer 2 laminated on the glass plate 1, and the mask layer 2 has an inter-vehicle distance such as a laser radar. A measuring unit 4 for measuring the distance is attached. Hereinafter, each member will be described.

<1. Outline of glass plate>
<1-1. Glass plate>
The glass plate 1 can have various configurations. For example, the glass plate 1 can be composed of laminated glass having a plurality of glass plates, or can be composed of a single glass plate. In the case of using laminated glass, for example, it can be configured as shown in FIG. FIG. 3 is a sectional view of the laminated glass.

As shown in the figure, this laminated glass includes an outer glass plate 11 and an inner glass plate 12, and a resin intermediate film 13 is disposed between the glass plates 11 and 12. First, the outer glass plate 11 and the inner glass plate 12 will be described. As the outer glass plate 11 and the inner glass plate 12, known glass plates can be used, and they can be formed of heat ray absorbing glass, general clear glass, green glass, or UV green glass. However, these glass plates 11 and 12 need to realize visible light transmittance in accordance with the safety standards of the country where the automobile is used. For example, the required solar radiation absorption rate can be ensured by the outer glass plate 11, and the visible light transmittance can be adjusted by the inner glass plate 12 so as to satisfy safety standards. Below, an example of a composition of clear glass, heat ray absorption glass, and soda-lime-type glass is shown.

(Clear glass)
SiO ₂ : 70 to 73% by mass
Al ₂ O ₃ : 0.6 to 2.4% by mass
CaO: 7 to 12% by mass
MgO: 1.0 to 4.5% by mass
R ₂ O: 13 to 15% by mass (R is an alkali metal)
Total iron oxide converted to Fe ₂ O ₃ (T-Fe ₂ O ₃ ): 0.08 to 0.14% by mass

(Heat ray absorbing glass)
The composition of the heat-absorbing glass, for example, based on the composition of the clear glass, the proportion of the total iron oxide in terms of _{Fe 2 O 3 (T-Fe} 2 O 3) and 0.4 to 1.3 wt%, CeO The ratio of ₂ is 0 to 2% by mass, the ratio of TiO ₂ is 0 to 0.5% by mass, and the glass skeleton components (mainly SiO ₂ and Al ₂ O ₃ ) are T-Fe ₂ O ₃ , CeO. _The composition can be reduced by an increase of ₂ and TiO ₂ .

(Soda-lime glass)
SiO ₂ : 65-80% by mass
Al ₂ O ₃ : 0 to 5% by mass
CaO: 5 to 15% by mass
MgO: 2% by mass or more NaO: 10-18% by mass
K ₂ O: 0 to 5% by mass
MgO + CaO: 5-15% by mass
Na ₂ O + K ₂ O: 10 to 20% by mass
SO ₃ : 0.05 to 0.3% by mass
B ₂ O ₃ : 0 to 5% by mass
Fe total iron oxide in terms of _{2 O 3 (T-Fe 2} O 3): 0.02 ~ 0.03 wt%

The thickness of the laminated glass according to the present embodiment is not particularly limited, but from the viewpoint of weight reduction, the total thickness of the outer glass plate 11 and the inner glass plate 12 is preferably 2.4 to 3.8 mm. The thickness is more preferably 2.6 to 3.4 mm, and particularly preferably 2.7 to 3.2 mm. Thus, since it is necessary to reduce the total thickness of the outer glass plate 11 and the inner glass plate 12 for weight reduction, the thickness of each glass plate is not particularly limited, For example, the thickness of the outer glass plate 11 and the inner glass plate 12 can be determined as follows.

The outer glass plate 11 mainly needs durability and impact resistance against external obstacles. For example, when this laminated glass is used as a windshield of an automobile, the outer glass plate 11 has impact resistance performance against flying objects such as pebbles. is necessary. On the other hand, as the thickness is larger, the weight increases, which is not preferable. In this respect, the thickness of the outer glass plate 11 is preferably 1.8 to 2.3 mm, and more preferably 1.9 to 2.1 mm. Which thickness is adopted can be determined according to the application of the glass.

The thickness of the inner glass plate 12 can be made equal to that of the outer glass plate 11, but for example, the thickness can be made smaller than that of the outer glass plate 11 in order to reduce the weight of the laminated glass. Specifically, considering the strength of the glass, it is preferably 0.6 to 2.0 mm, more preferably 0.8 to 1.6 mm, and 1.0 to 1.4 mm. Particularly preferred. Further, it is preferably 0.8 to 1.3 mm. Which thickness is used for the inner glass plate 12 can be determined according to the purpose of the glass.

Moreover, the shape of the outer side glass plate 11 and the inner side glass plate 12 which concerns on this embodiment is a curved shape.

In addition, when the glass plate has a curved shape, the sound insulation performance decreases as the amount of double increases. The double amount is an amount indicating the bending of the glass plate. For example, as shown in FIG. 4, when a straight line L connecting the center of the upper side and the center of the lower side is set, the straight line L and the glass plate are set. The largest distance between the two is defined as a double amount D.

FIG. 5 is a graph showing a relationship between a general frequency and sound transmission loss of a curved glass plate and a planar glass plate. According to FIG. 5, the curved glass plate does not have a large difference in sound transmission loss (STL: Sound Transmission Loss) in the range of 30 to 38 mm in the amount of double, but is 4000 Hz compared with the planar glass plate. It can be seen that the sound transmission loss is reduced in the following frequency bands. Therefore, when producing a curved glass plate, the amount of double is better, but for example, when the amount of double exceeds 30 mm, the Young's modulus of the core layer of the intermediate film is set to 18 MPa (frequency) as will be described later. 100 Hz, temperature 20 ° C.) or less.

Here, an example of a method for measuring the thickness when the glass plate is curved will be described. First, about a measurement position, as shown in FIG. 6, it is two places up and down on the center line S extended in the up-down direction at the center of the left-right direction of a glass plate. The measuring instrument is not particularly limited, and for example, a thickness gauge such as SM-112 manufactured by Teclock Co., Ltd. can be used. At the time of measurement, it is arranged so that the curved surface of the glass plate is placed on a flat surface, and the end of the glass plate is sandwiched by the thickness gauge and measured. Even when the glass plate is flat, it can be measured in the same manner as when the glass plate is curved.

<1-2. Interlayer>
Subsequently, the intermediate film 13 will be described. The intermediate film 13 is formed of at least one layer. For example, as shown in FIG. 3, the intermediate film 13 can be configured by three layers in which a soft core layer 131 is sandwiched between harder outer layers 132. However, it is not limited to this configuration, and may be formed of a plurality of layers including the core layer 131 and at least one outer layer 132 disposed on the outer glass plate 11 side. For example, two layers of the intermediate film 13 including the core layer 131 and one outer layer 132 disposed on the outer glass plate 11 side, or an even number of outer layers 132 each having two or more layers on both sides around the core layer 131. Alternatively, the intermediate film 13 may be disposed, or the intermediate film 13 may be configured such that the odd outer layer 132 is disposed on one side and the even outer layer 132 is disposed on the other side with the core layer 131 interposed therebetween. When only one outer layer 132 is provided, the outer layer 132 is provided on the outer glass plate 11 side as described above, but this is to improve the resistance to breakage against an external force from outside the vehicle or outside. Further, when the number of outer layers 132 is large, the sound insulation performance is also enhanced.

As long as the core layer 131 is softer than the outer layer 132, the hardness thereof is not particularly limited. For example, the material can be selected based on the Young's modulus. Specifically, it is preferably 1 to 20 MPa, more preferably 1 to 18 MPa, and particularly preferably 1 to 14 MPa at a frequency of 100 Hz and a temperature of 20 degrees. In such a range, it is possible to prevent the sound transmission loss from being lowered in a low frequency range of approximately 3500 Hz or less.

In this regard, it has been found by the inventor that sound insulation performance is improved in the frequency range of 3000 to 5000 Hz when the Young's modulus of the core layer is generally lowered. In this regard, Table 1 below shows the sound insulation performance of the laminated glass having an intermediate film composed of an outer glass plate and an inner glass plate made of clear glass, and an outer layer located on both sides of the core layer and the core layer. Show. The thickness of the outer glass plate is 2.0 mm, the thickness of the inner glass plate is 1.3 mm, and the thickness of the intermediate film is 0.10 mm for the core layer and 0.33 mm for the outer layer, for a total of 0.76 mm. Table 1 below shows sound transmission loss when the frequency is between 1250 and 10,000 Hz. Specifically, sound transmission loss is calculated when the Young's modulus (measured at a frequency of 100 Hz and a temperature of 20 ° C.) of the core layer of the interlayer film is 25 MPa, 12.5 MPa, and 6.25 MPa (a calculation method will be described later). According to the method of the embodiment), the difference in sound transmission loss when the Young's modulus is 12.5 MPa and 6.25 MPa (unit: 0 in the following table, based on the case where the Young's modulus is 25 MPa) Indicates dB). At this time, the Young's modulus of the outer layer is 560 MPa, and tan δ is 0.26 (temperature 20 ° C., frequency 100 Hz). According to Table 1, when the frequency is between 3150 and 5000 Hz, the sound transmission loss improves as the Young's modulus of the core layer of the intermediate film decreases from 25 MPa to 12.5 MPa and 6.25 MPa. I understand.

As a measuring method, for example, frequency dispersion measurement can be performed with a strain amount of 0.05% using a solid viscoelasticity measuring device DMA 50 manufactured by Metravib. Hereinafter, unless otherwise specified, in this specification, the Young's modulus is a value measured by the above method. However, the measurement when the frequency is 200 Hz or less uses an actual measurement value. When the frequency is higher than 200 Hz, a calculation value based on the actual measurement value is used. This calculated value is based on a master curve calculated by using the WLF method from the actually measured value.

On the other hand, the Young's modulus of the outer layer 132 is preferably large in order to improve sound insulation performance in a high frequency region, as will be described later, and is 560 MPa or more, 600 MPa or more, 650 MPa or more, 700 MPa or more at a frequency of 100 Hz and a temperature of 20 degrees. It can be set to 750 MPa or more, 880 MPa or more, or 1300 MPa or more. On the other hand, the upper limit of the Young's modulus of the outer layer 132 is not particularly limited, but can be set from the viewpoint of workability, for example. For example, it is empirically known that when it becomes 1750 MPa or more, workability, particularly cutting becomes difficult. Moreover, it is preferable to make the Young's modulus of the outer layer on the outer glass plate 11 side larger than the Young's modulus of the outer layer on the inner glass plate 12 side. Thereby, the damage resistance performance with respect to the external force from the outside of a vehicle or the outdoors improves.

Further, tan δ of the core layer 131 can be set to 0.1 to 0.9 at a frequency of 100 Hz and a temperature of 20 ° C. When tan δ is in the above range, the sound insulation performance is improved.

In this regard, it has been found by the present inventor that the sound insulation performance is improved in the frequency range of 5000 to 10000 Hz when the tan δ of the core layer is generally increased. In this regard, Table 2 below shows the sound insulation performance of laminated glass having an intermediate film composed of an outer glass plate and an inner glass plate made of clear glass, and an outer layer positioned on both sides of the core layer and the core layer. Show. The thickness of the outer glass plate is 2.0 mm, the thickness of the inner glass plate is 1.3 mm, and the thickness of the intermediate film is 0.10 mm for the core layer and 0.33 mm for the outer layer, for a total of 0.76 mm. The Young's modulus of the core layer and the outer layer at this time is 12.5 MPa and 560 MPa, respectively (measured at a frequency of 100 Hz and a temperature of 20 ° C.). Table 2 below shows sound transmission loss when the frequency is between 1250 and 10000 Hz. Specifically, sound transmission loss is calculated when tan δ (measured at a frequency of 100 Hz and a temperature of 20 ° C.) of the interlayer film is 0.8, 1.2, and 1.6 (a calculation method is described in an example described later). The difference in sound transmission loss when tan δ is 1.2 and 1.6 (unit is dB), based on the case where tan δ is 0.8 (in the following table, it is 0). ). Note that tan δ of the outer layer is 0.26. According to Table 2, when the frequency is between 5000 and 10,000 Hz, the sound transmission loss is improved as the tan δ of the intermediate film increases from 0.8 to 1.2, 1.6. .

The material constituting each of the layers 131 and 132 is not particularly limited, but it is necessary that the material has at least a Young's modulus in the above range. For example, these layers 131 and 132 can be formed of a resin material. Specifically, the outer layer 132 can be made of polyvinyl butyral resin (PVB). Polyvinyl butyral resin is preferable because it is excellent in adhesiveness and penetration resistance with each glass plate. On the other hand, the core layer 131 can be composed of an ethylene vinyl acetate resin (EVA) or a polyvinyl acetal resin that is softer than the polyvinyl butyral resin that constitutes the outer layer 132. By sandwiching the soft core layer 131 in between, the sound insulation performance can be greatly improved while maintaining the same adhesion and penetration resistance as the single-layer resin intermediate film.

In general, the hardness of the polyvinyl acetal resin is controlled by (a) the degree of polymerization of the starting polyvinyl alcohol, (b) the degree of acetalization, (c) the type of plasticizer, (d) the addition ratio of the plasticizer, etc. Can do. Therefore, by appropriately adjusting at least one selected from these conditions, a hard polyvinyl butyral resin used for the outer layer 132 and a soft polyvinyl butyral resin used for the core layer 131 even if the same polyvinyl butyral resin is used. Can be made separately. Furthermore, the hardness of the polyvinyl acetal resin can also be controlled by the type of aldehyde used for acetalization, coacetalization with a plurality of aldehydes, or pure acetalization with a single aldehyde. Although it cannot generally be said, the polyvinyl acetal resin obtained by using an aldehyde having a large number of carbon atoms tends to be softer. Therefore, for example, when the outer layer 132 is made of polyvinyl butyral resin, the core layer 131 has an aldehyde having 5 or more carbon atoms (for example, n-hexylaldehyde, 2-ethylbutyraldehyde, n-heptylaldehyde, n-octylaldehyde) and a polyvinyl acetal resin obtained by acetalization with polyvinyl alcohol can be used. In addition, when a predetermined Young's modulus is obtained, it is not limited to the said resin.

The total thickness of the intermediate film 13 is not particularly limited, but is preferably 0.3 to 6.0 mm, more preferably 0.5 to 4.0 mm, and 0.6 to 2.0 mm. It is particularly preferred. The thickness of the core layer 131 is preferably 0.1 to 2.0 mm, and more preferably 0.1 to 0.6 mm. On the other hand, the thickness of each outer layer 132 is preferably larger than the thickness of the core layer 131. Specifically, the thickness is preferably 0.1 to 2.0 mm, and preferably 0.1 to 1.0 mm. Is more preferable. In addition, the total thickness of the intermediate film 13 can be made constant, and the thickness of the core layer 131 can be adjusted therein.

The thickness of the core layer 131 and the outer layer 132 can be measured as follows, for example. First, the cross section of the laminated glass is enlarged and displayed by 175 times using a microscope (for example, VH-5500 manufactured by Keyence Corporation). And the thickness of the core layer 131 and the outer layer 132 is specified visually, and this is measured. At this time, in order to eliminate visual variation, the number of measurements is set to 5 times, and the average value is defined as the thickness of the core layer 131 and the outer layer 132. For example, an enlarged photograph of a laminated glass as shown in FIG. 7 is taken, and the core layer and the outer layer 132 are specified in this and the thickness is measured.

In addition, the thickness of the core layer 131 and the outer layer 132 of the intermediate film 13 does not need to be constant over the entire surface, and can be a wedge shape for laminated glass used for a head-up display, for example. In this case, the thickness of the core layer 131 and the outer layer 132 of the intermediate film 13 is measured at the position where the thickness is the smallest, that is, the lowermost side portion of the laminated glass. When the intermediate film 3 is wedge-shaped, the outer glass plate and the inner glass plate are not arranged in parallel, but such arrangement is also included in the glass plate in the present invention. That is, in the present invention, for example, the arrangement of the outer glass plate 11 and the inner glass plate 12 when the intermediate film 13 using the core layer 131 and the outer layer 132 whose thickness is increased at a change rate of 3 mm or less per 1 m is used. including.

The method for producing the intermediate film 13 is not particularly limited. For example, the resin component such as the polyvinyl acetal resin described above, a plasticizer, and other additives as necessary are blended and kneaded uniformly, and then each layer is collectively And a method of laminating two or more resin films prepared by this method by a pressing method, a laminating method or the like. The resin film before lamination used in a method of laminating by a press method, a laminating method or the like may have a single layer structure or a multilayer structure. Further, the intermediate film 13 can be formed of a single layer in addition to the above-described plural layers.

<1-3. Infrared transmittance of glass plate>
As described above, the windshield according to the present embodiment is used for a vehicle front safety system using a measurement unit such as a laser radar or a camera. In such a safety system, the vehicle ahead is irradiated with infrared rays to measure the speed and distance between the vehicles ahead. Therefore, the laminated glass (or one glass plate) is required to achieve a predetermined range of infrared transmittance.

As such transmittance, for example, when a general sensor is used for laser radar, it is 20% to 80%, preferably 20% to 60% with respect to light (infrared rays) having a wavelength of 850 to 950 nm. The following are considered useful. The measuring method of the transmittance can be UV3100 (manufactured by Shimadzu Corporation) as a measuring device according to JIS R3106. Specifically, the transmission of light in one direction irradiated at an angle of 90 degrees with respect to the surface of the laminated glass is measured.

In addition, some safety systems such as those described above measure the speed and distance between vehicles ahead using an infrared camera without using a laser radar. In this case, for example, a camera commonly used for laser radar is used. Is used, it is considered useful to be 30% or more and 80% or less, preferably 40% or more and 60% or less, with respect to light (infrared rays) having a wavelength of 700 to 800 nm. The measuring method of the transmittance follows ISO9050.

<2. Mask layer>
Next, the mask layer 2 will be described. A mask layer 2 as shown in FIG. 8 is formed on the glass plate 1 according to the present embodiment. Although the mask layer 2 is laminated | stacked on a glass plate, the position is not specifically limited. For example, when the glass plate is formed of a single glass plate, the mask layer 2 can be laminated on the inner surface of the vehicle. On the other hand, when the glass plate is formed of laminated glass as shown in FIG. 3, the vehicle inner surface of the outer glass plate 11, the vehicle outer surface of the inner glass plate 12, and the vehicle inner surface of the inner glass plate 12. It can be laminated to at least one of the surfaces. Among these, for example, when the mask layer 2 having substantially the same shape is formed on both the inner surface of the outer glass plate 11 and the inner surface of the inner glass plate 12, the portion where the mask layer 2 is laminated is formed. Since the curvature of both the glass plates 11 and 12 corresponds, it is preferable.

The mask layer 2 is a dark region for preventing the outside from being seen from the outside, such as application of an adhesive for attaching the glass plate 1 to the vehicle body, and is formed on the outer peripheral edge of the glass plate 1. A peripheral mask layer 21 and a center mask layer 22 extending downward from the center of the upper edge of the glass plate 1 in the peripheral mask layer 21 are provided. The measurement unit 4 described above is attached to the center mask layer 22. As will be described later, the measurement unit 4 only needs to be arranged so that light emitted from the sensor 5 passes through the center of the opening and can receive reflected light from the preceding vehicle and the obstacle. These mask layers 2 can be formed of various materials, but are not particularly limited as long as they can shield the field of view from the outside of the vehicle. For example, dark ceramic such as black is applied to the glass plate 1. Can be formed.

Next, the center mask layer 22 will be described. As shown in FIG. 9, the center mask layer 22 is formed in a rectangular shape extending in the vertical direction, and two openings arranged in the vertical direction, that is, an upper opening 231 and a lower opening 232 are formed. Both the upper opening 231 and the lower opening 232 are formed in a trapezoidal shape, but the width of the lower opening 232 in the left-right direction is about half that of the upper opening 231. However, the length in the vertical direction is substantially the same. The size of the opening is not particularly limited. For example, the upper opening 231 can be about 58 mm in length and about 58 mm in width, and the lower opening 232 can be about 52 mm in length and about 27 mm in width.

The center mask layer 22 is divided into three regions, an upper region 221 above the upper opening 231, a lower region 222 including both openings 231 and 232 below the upper region 221, and the side of the lower region 222. It is composed of small rectangular side regions 223 formed in the part.

Next, the layer structure of each region will be described. As shown in FIG. 10, the upper region 221 is formed of one layer by a first ceramic layer 241 made of black ceramic. The lower region 222 is formed of three layers including the first ceramic layer 241, the silver layer 242, and the second ceramic layer 243 that are stacked from the inner surface of the glass plate 1. The silver layer 242 is made of silver, and the second ceramic layer 243 is made of the same material as the first ceramic layer 241. Moreover, the side part area | region 223 is formed with two layers, the 1st ceramic layer 241 and the silver layer 242, which are laminated | stacked from the inner surface of the glass plate 1, and the silver layer 242 is exposed to the vehicle inside. The lowermost first ceramic layer 241 is common in each region, and the second silver layer 242 is common in the lower region 222 and the side region 223. In order to secure light shielding properties, the thickness of each ceramic layer 241 and 243 can be set to 10 to 20 μm, for example. As will be described later, since the bracket of the measurement unit 4 is adhered to the center mask layer 22 formed on the inner surface of the inner glass plate 12 with an adhesive, this also ensures the adhesion. Such a thickness is preferred. This is because, for example, the urethane / silicone adhesive may be deteriorated by ultraviolet rays or the like.

The peripheral mask layer 21 and the center mask layer 22 can be formed as follows, for example. First, the 1st ceramic layer 241 is apply | coated on a glass plate. The first ceramic layer 241 is common with the peripheral mask layer 21. Next, a silver layer 242 is applied on the first ceramic layer 241 in a region corresponding to the lower region 222 and the side region 223. Finally, the second ceramic layer 243 is applied to a region corresponding to the lower region 222. In the lower region 222, the region where the silver layer 242 is formed corresponds to a position where a sensor of the measurement unit 4 described later is disposed. The silver layer 242 exposed in the side region 223 is grounded. The ceramic layers 241 and 243 and the silver layer 242 can be formed by a screen printing method. Alternatively, the ceramic layers 241 and 243 and the silver layer 242 can be formed by transferring a baking transfer film to a glass plate and baking it.

The ceramic layers 241 and 243 can be formed of various materials. For example, the ceramic layers 241 and 243 can have the following composition.

* 1, Main component: Copper oxide, Chromium oxide, Iron oxide and Manganese oxide * 2, Main component: Bismuth borosilicate, Zinc borosilicate

In addition, the silver layer 242 is not particularly limited, and for example, the following composition can be used.

* 1, Main component: Bismuth borosilicate, Zinc borosilicate

As conditions for screen printing, for example, polyester screen: 355 mesh, coat thickness: 20 μm, tension: 20 Nm, squeegee hardness: 80 degrees, mounting angle: 75 °, printing speed: 300 mm / s, The ceramic layer and the silver layer can be formed by drying at 150 ° C. for 10 minutes. In addition, when laminating | stacking the 1st ceramic layer 241, the silver layer 242, and the 2nd ceramic layer 243 in this order, what is necessary is just to repeat screen printing and drying mentioned above.

<3. Windshield manufacturing method>
Next, a method for manufacturing the windshield will be described. First, a glass plate production line will be described.

As shown in FIG. 11, in this production line, a heating furnace 901 and a molding device 902 are arranged in this order from upstream to downstream. A roller conveyor 903 is arranged from the heating furnace 901 to the molding apparatus 902 and the downstream side thereof, and the glass plate 10 to be processed is conveyed by the roller conveyor 903. The glass plate 10 is formed in a flat plate shape before being carried into the heating furnace 901. After the mask layer 2 described above is laminated on the glass plate 10, the glass plate 10 is carried into the heating furnace 901.

The heating furnace 901 can have various configurations, but can be an electric heating furnace, for example. The heating furnace 901 includes a rectangular tube-shaped furnace main body whose upstream and downstream ends are open, and a roller conveyor 903 is disposed in the interior from upstream to downstream. Heaters (not shown) are disposed on the upper surface, the lower surface, and the pair of side surfaces of the inner wall surface of the furnace body, respectively, and the temperature at which the glass plate 10 passing through the heating furnace 901 can be formed, for example, the softening point of glass. Heat to near.

The forming apparatus 902 is configured to press a glass plate with an upper die 921 and a lower die 922 to form a predetermined shape. The upper die 921 has a downwardly convex curved shape so as to cover the entire upper surface of the glass plate 10, and is configured to be movable up and down. The lower die 922 is formed in a frame shape corresponding to the peripheral edge of the glass plate 10, and the upper surface thereof has a curved shape so as to correspond to the upper die 921. With this configuration, the glass plate 10 is press-formed between the upper die 921 and the lower die 922, and formed into a final curved shape. A roller conveyor 903 is disposed in the frame of the lower mold 922, and the roller conveyor 903 can move up and down so as to pass through the frame of the lower mold 922. And although illustration is abbreviate | omitted, the slow cooling apparatus (illustration omitted) is arrange | positioned in the downstream of the shaping | molding apparatus 902, and the shape | molded glass plate is cooled.

The roller conveyor 903 as described above is a known one, and a plurality of rollers 931 whose both ends are rotatably supported are arranged at predetermined intervals. There are various methods for driving each roller 931. For example, a sprocket can be attached to the end of each roller 931, and a chain can be wound around each sprocket to drive it. And the conveyance speed of the glass plate 10 can also be adjusted by adjusting the rotational speed of each roller 931. FIG. Note that the lower mold 922 of the forming apparatus 902 may be in contact with the entire surface of the glass plate 10. In addition, if the shaping | molding apparatus 902 shape | molds a glass plate, the form of an upper mold | type and a lower mold | type will not be specifically limited.

Thus, when the outer glass plate 11 and the inner glass plate 12 are formed, the intermediate film 13 is subsequently sandwiched between the outer glass plate 11 and the inner glass plate 12, put into a rubber bag, and sucked under reduced pressure. While pre-adhering at about 70-110 ° C. Other pre-adhesion methods are possible. For example, the intermediate film 13 is sandwiched between the outer glass plate 11 and the inner glass plate 12 and heated at 45 to 65 ° C. in an oven. Subsequently, this laminated glass is pressed by a roll at 0.45 to 0.55 MPa. Next, the laminated glass is again heated at 80 to 105 ° C. in an oven and then pressed again with a roll at 0.45 to 0.55 MPa. Thus, preliminary adhesion is completed. In addition, when sticking the shielding film 70 on the surface of the inner glass plate 12 on the outside of the vehicle, the shielding film 70 is stuck before the preliminary bonding.

Next, this bonding is performed. The laminated glass that has been pre-adhered is subjected to main bonding by an autoclave at, for example, 8 to 15 atm and 100 to 150 ° C. Specifically, for example, the main bonding can be performed under the conditions of 14 atm and 145 ° C. Thereafter, when the shielding film 70 is attached to the inner surface of the inner glass plate 12, the shielding film 70 is attached after the main adhesion. Thus, the laminated glass according to the present embodiment is manufactured.

In addition, when using one glass as a glass plate, what is necessary is just to use one sheet among the glass mentioned above. The manufacturing method of a glass plate is also the same. After forming a mask layer on the inner surface of the glass plate, heating is performed, and thereafter, the glass plate is formed into a curved shape.

In addition, when mounting such a laminated glass to an automobile, the mounting angle of the laminated glass is preferably 45 degrees or less from the vertical.

<4. Measurement unit>
Next, the measurement unit will be described with reference to FIGS. FIG. 12 is a cross-sectional view showing a schematic configuration of the measurement unit 4 attached to the glass plate, and FIG. As shown in FIG. 12, the measurement unit 4 includes a bracket (attachment member) 41 fixed to the inner surface of the glass plate 1, a sensor (information acquisition device) 5 supported by the bracket 41, and the bracket 41 and the sensor 5. Is covered with a cover 42 that covers from the inside of the vehicle.

As shown in FIG. 13, the bracket 41 is formed in a rectangular shape, and an adhesive 401 and a double-sided tape 402 are applied to the center mask layer 22 formed on the inner surface of the inner glass plate 12 as described above. Fixed. In addition, the bracket 41 is formed with two openings arranged vertically and partitioned by the partition portion 415, that is, a first opening 411 and a second opening 412, and a large first opening 411 formed on the upper side. The sensor 5 is attached to. Further, in this bracket, a trapezoidal concave portion 414 is formed below the second opening 412 when viewed from the outside of the vehicle. The recess 414 is inclined so that the upper end is deepest and becomes shallower toward the lower end, and a second opening 412 is formed at the upper end. Further, as shown in FIG. 13B, support portions 413 that support the sensor 5 are attached to both sides of the first opening 411 on the inner surface of the bracket 41, and the sensor 5 includes both support portions. It is fixed between 413. An irradiation lens 552 is attached to the tip of the fixed sensor 5 (lower end in FIG. 13), as will be described later, and this irradiation lens 552 faces the outside through the second opening 412 and the recess 414. It has become. That is, the concave portion 414 forms a gap with the glass plate and serves as a path for light emitted from the second opening 412. On the other hand, the light receiving lens 542 faces the outside through the first opening 411. Note that the upper side, the right side, the lower side, and the left side of the frame of the bracket 41 shown in FIG. 13 correspond to the first side, the second side, the third side, and the fourth side of the present invention. Moreover, in this embodiment, although the recessed part 414 is integrally provided in the bracket 41, the location which comprises the recessed part 414 in the bracket 41 corresponds to the channel | path member of this invention.

Further, as shown in FIG. 13 (a), the outer surface of the bracket 41 is a surface fixed to the center mask layer 22 (corresponding to the fixing portion of the present invention, hereinafter referred to as a fixing portion), A bead-shaped adhesive 401 is applied to the position corresponding to the support portion 413 and the upper periphery of the first opening 411. A known double-sided tape 402 is attached to the upper and lower sides of the adhesive 401 at a position corresponding to the support portion 413. Furthermore, double-sided tape 402 is also attached to both sides of the partition portion 415 and the recess 414. The portions to which the double-faced tape 402 and the adhesive 401 are applied and fixed to the mask layer 22 are all fixed portions. Various adhesives can be employed, and for example, a urethane resin adhesive, an epoxy resin adhesive, or the like can be used. However, the epoxy resin adhesive is advantageous because it is difficult to flow because of its high viscosity.

After the harness etc. which abbreviate | omits illustration are attached to the bracket 41, as shown in FIG. 12, the cover 42 is attached from the vehicle inside. As a result, the sensor 5 and the bracket 41 are not visible from the inside of the vehicle. Thus, the sensor 5 is accommodated in the space surrounded by the bracket 41, the cover 42, and the glass plate 1. Since the center mask layer 22 is formed, the measurement unit 4 cannot be seen from the outside of the vehicle except for the upper opening 231 and the lower opening 232.

Next, an outline of the sensor 5 will be described with reference to FIG. As shown in the figure, the sensor 5 includes a housing 51 having a triangular shape in a side view, and the inside of the housing 51 is partitioned into an upper space 501 and a lower space 502. A connector 53 is attached to the back side of the casing 51 and is used for connection to an external device.

A first support portion 54 is disposed in the upper space 501, and a first control board 541 and a light receiving lens 542 are disposed in the first support portion 54 from the rear to the front. In addition, a light receiving element 543 is mounted on the first control board 541 so as to receive laser light that has passed through the light receiving lens 542 and convert it into an electrical signal. This electric signal is amplified by the first control board 541 and transmitted to the second control board 56 described later. As described above, the light receiving lens 542 is arranged so as to face the outside from the first opening 411 of the bracket 41 through the upper opening 231 of the center mask layer 22. In particular, the sensor 5 is supported by the bracket 41 so that the passage path of the light received by the light receiving element 543 passes near the center X of the upper opening 231 (see FIG. 12). In addition, reflected light from multiple directions reflected from the preceding vehicle or obstacle passes near the center of the upper opening 231, and the light receiving element 543 receives the reflected light.

On the other hand, the second support portion 55 is disposed in the lower space 502, and the laser light emitting element 551 and the irradiation lens 552 are supported on the second support portion 55 in this order from the rear to the front. The laser light emitting element 551 transmits laser light having a wavelength range of 850 nm to 950 nm, such as a laser diode, and the irradiation lens 552 is a lens that shapes the laser light from the laser light emitting element 551 into a predetermined beam shape. It is. As described above, the irradiation lens 552 is disposed so as to face the outside from the housing 51 through the second opening 412 of the bracket 41 and the lower opening 232 of the center mask layer 22. In particular, the sensor 5 is supported by the bracket 41 so that the passage path of the laser light emitted from the laser light emitting element 551 passes through the vicinity Y of the center of the lower opening 232 (see FIG. 12).

In addition, a second control board 56 is disposed on the upper surface of the second support portion 55, and drives the laser light emitting element 551, processes an electric signal transmitted from the first control board 541, and the like.

Next, the operation of the measurement unit 4 will be described. First, the first control board 541 transmits a pulse of laser light from the laser light emitting element 551. Then, the distance between the preceding vehicle or the obstacle and the own vehicle is calculated based on the time until the reflected light reflected by the preceding vehicle or the obstacle is received by the light receiving element 543. The calculated distance is transmitted to an external device via the connector 53 and used for brake control and the like.

<6. Features>
As described above, according to the present embodiment, the sensor 5 is supported by the support portion 413 in the bracket 41, and the position corresponding to the support portion 413 is fixed to the center mask layer 22 by the adhesive 401. Therefore, the portion of the bracket 41 to which the sensor 5 is attached is firmly fixed to the mask layer 22, so that displacement and vibration of the sensor 5 can be prevented. Further, since the double-sided tape 402 is attached in the vicinity of the adhesive 401, the double-sided tape 402 can be used as a fixing material for temporary fixing until the adhesive 401 is dried. In particular, since the double-sided tape 402 has a predetermined thickness (since it has a predetermined thickness and does not have a large deformation), the thickness of the adhesive 401 can be matched to the thickness of the double-sided tape 402. Therefore, it is possible to prevent the adhesive 401 from being excessively crushed and protruding from the bracket 41. Therefore, if the application amount of the adhesive is adjusted, it is possible to reliably prevent the adhesive from protruding from the fixed portion. Furthermore, by using the double-sided tape 402, since there is no fluidity like an adhesive, it does not protrude even if the width of the bracket 41 is small. Therefore, it is possible to prevent the appearance from deteriorating due to the protrusion. It can also be used for narrow regions. In this embodiment, the adhesive 401 is used as the main fixing material and the double-sided tape 402 is used as the temporary fixing material. However, other fixing materials can be used. It can also be used as a material.

In order to attach the bracket 41 to the glass plate 1, at least in the fixing portion, the vicinity of the position corresponding to the support portion 413 may be fixed to the center mask layer 22 with the adhesive 401 or the double-sided tape 402. In the present embodiment, in addition to this, an adhesive 401 and a double-sided tape 402 are also provided on both sides of the upper periphery of the first opening 411, the partition portion 415, and the recess 414, and these are used as a light shielding member. The reason is as follows. That is, since the glass plate 1 according to the present embodiment is curved, a gap may be generated between the bracket 41 and the glass plate 1. If light enters the first opening 411 or the second opening 412 from the outside through such a gap, the light emitted from the sensor 5 or the light received by the sensor 5 from the outside may be affected. There is.

Therefore, in the present embodiment, as described above, the adhesive 401 and the double-sided tape 402 are also arranged on the upper peripheral edge of the first opening 411, the partition portion 415, and the concave portion 414, thereby shielding the periphery of the first opening 411. In addition, the periphery of the recess 414, that is, the periphery of the second opening 412 is also shielded. Among these, since the concave portion 414 serves as a light path formed between the opening 232 of the center mask layer 22 and the sensor 5, it is particularly preferable to shield the periphery thereof. Furthermore, if there is a gap in the vicinity of the recess 414 or the second opening 412, the irradiated laser light is reflected by the glass plate, and the reflected light may leak out from the gap. Then, the leaked laser light may be received as stray light through the first opening 414, which causes malfunction. For this reason, it is preferable to provide a light shielding member for filling the gap in the vicinity of the recess 414 and the second opening 412. Further, regarding the upper side that is the upper part of the first opening 411, sunlight may be incident from above, which may cause malfunction of the sensor 5. Therefore, a light shielding member may be provided also in this part. preferable. In addition, although it is not necessary to arrange | position a light shielding member to the circumference | surroundings of the recessed part 414, it is preferable to arrange | position a light shielding member especially in the vicinity of 2nd opening.

Also, since the adhesive 401 and the double-sided tape 402 are mainly elastically deformable, they can be deformed according to the size of the gap, and the gap can be effectively filled. As a result, light from the outside to each of the openings 411 and 412 is blocked, and the sensor 5 can be prevented from malfunctioning. The double-sided tape is generally harder to deform than the adhesive, but for this, for example, a thick double-sided tape may be used or a plurality of double-sided tapes may be laminated.

In addition, although both the adhesive agent 401 and the double-sided tape 402 can be used as the light shielding member, the double-sided tape 402 is advantageous in that it can be used even in a narrow region as described above and has no fluidity. However, the adhesive may have a higher fixing strength. Further, the position where the light shielding member is attached is not particularly limited, and it is preferable that the light shielding member is attached so as to surround substantially the entire circumference of the bracket 41. However, the light shielding member may not necessarily be the entire circumference, and is generally between the bracket 41 and the mask layer 2. It is sufficient that no gap is formed. Further, since the recess 414 is a light path, it is necessary to attach a light shielding member in the vicinity thereof, but it is not necessary to provide the entire periphery of the recess 414 for the above reason.

Incidentally, the light shielding member may be composed of an elastically deformable sponge, rubber, etc. in addition to the above-mentioned adhesive and double-sided tape. Considering this point, for example, when the light shielding member is made of a material having low elasticity, it can be adopted as the light shielding member of the present invention. For example, the light shielding member is made of a material having strong elasticity, and an adhesive or double-sided tape When used together with it, problems may arise. For example, when an adhesive or a double-sided tape is provided in the vicinity of a highly elastic light shielding member (hereinafter referred to as an elastic light shielding member), a force acts in a direction in which the bracket 41 is separated from the glass plate 1 or the mask layer by the elastic force of the elastic light shielding member. Along with this, there may be a problem that the nearby adhesive or double-sided tape is peeled off. Therefore, it is preferable to use a light shielding member having such an elastic force that other adhesives and double-sided tape are not peeled off.

Furthermore, there are the following effects. As described above, the mask layer 2 is laminated on the glass plate 1 by screen printing or the like. Thereafter, the glass plate 1 is heated and molded. At this time, since the mask layer 2 is a dark color such as black, the amount of heat absorbed in the glass plate 1 is larger than that of a region where the mask layer 2 is not formed, for example, the upper opening 231 and the lower opening 232. Become. And since the thermal expansion coefficient differs between the mask layer 2 and the glass plate 1, the compressive stress and tensile stress at the time of shaping | molding generate | occur | produce in the area | region in which the mask layer 2 was formed, and the glass of an outer side glass plate and an inner side glass plate is generated. Due to the difference in curvature of the surface, the glass plate 1 is distorted in the vicinity of the boundary between the upper opening 231 and the lower opening 232 (hereinafter, a region where the distortion occurs is referred to as a strain region). In addition, when the windshield is made of laminated glass and the thickness of the outer glass plate 11 is larger than that of the inner side, the distortion is more pronounced in the laminated glass having different thicknesses because it bends more than the outer glass plate 11 near the boundary of the inner glass plate 12. become. For this reason, when the laser light is irradiated and received, if the laser light passes through the strain region, the light may be refracted due to the distortion, or the laser light may not be irradiated accurately or received.

On the other hand, in the present embodiment, the sensor 5 is supported by the bracket 41 so that the light path passes through the vicinity of the center of the upper opening 231 and the lower opening 232 of the mask layer 22. It is possible to prevent light from passing through a region where such distortion occurs. However, the bracket 41 may not necessarily pass through the vicinity of the center, and the bracket 41 has a light passage path X in light irradiation and / or light reception of at least 4 mm from the periphery of the openings 231 and 232 of the mask layer 2, preferably The sensor 5 may be attached so as to be 6 mm away.

Considering this point, for example, when the distortion of the glass plate in the vicinity of the boundary of the mask layer 2 was measured for the glass plate manufactured as described above, it was as shown in FIG. In this graph, the horizontal axis represents the length in the surface direction of the glass plate, and the vertical axis represents the lens power (mili diopter: reciprocal of focal length). The method for measuring the lens power is as follows. First, light is projected onto a glass plate in a dark room, and a shadow is formed on the screen behind the glass plate. At this time, if there is a convex lens on the glass plate, the light is condensed and the shadow on the screen becomes bright. On the other hand, it becomes dark when there is a concave lens on the glass plate. Here, there is a correlation between the lens power and the brightness of the shadow on the screen. By placing a lens with a known lens power and measuring the brightness on the screen at that time, the relationship between the lens power and the brightness Can be obtained. Therefore, the lens power of the glass plate can be obtained by arranging the target glass plate and measuring the brightness on the screen over the entire surface of the glass.

As a result of such a measurement, it can be seen from FIG. 14 that the lens power increases rapidly in the vicinity of the boundary from the mask layer to the non-mask layer, so that the distortion increases. And it turns out that distortion will reduce if it leaves | separates predetermined length from a boundary, and will lose | disappear if it leaves further.

<7. Modification>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning.

<7.1>
In the said embodiment, although the example of the sensor 5 for measuring the distance between vehicles was shown, it is not limited to this, The distance between vehicles can be measured by irradiating light and receiving the reflected light. If there is, it is not particularly limited.

In the above embodiment, the sensor 5 for measuring the inter-vehicle distance is used as the information acquisition device of the present invention, but the present invention is not limited to this, and various information acquisition devices can be used. That is, there is no particular limitation as long as light is emitted and / or received in order to acquire information from outside the vehicle. For example, a visible light and / or infrared camera for measuring the distance between vehicles, a light receiving device for receiving a signal from outside the vehicle such as an optical beacon, a camera using visible light and / or infrared light that reads a white line of a road in an image, etc. The present invention can be applied to various devices. Here, when only one of light irradiation and light reception is performed, the center mask layer has one opening. In addition, a plurality of openings can be provided depending on the type of light. Note that the information acquisition device may or may not be in contact with the glass.

When using a camera as the information acquisition device, adjust the camera's field of view (view angle) as follows. That is, the bracket 41 supports the camera so that the field of view of the camera (passage range of visible light or infrared light) is disposed inside the inner edge of the opening of the center mask layer 22.

Further, the form of the bracket 41 is not limited to that described above, and various forms are possible. For example, when a camera is used as the information acquisition device, one opening may be provided, and when a plurality of information acquisition devices are used, there may be three or more openings. The concave portion 414 serves as a light passage formed between the opening of the mask layer 2 and the sensor 5, and the concave portion only needs to communicate with any one of the openings of the bracket. It may be provided at any position. Furthermore, the shape of the recess may not be formed in an inclined shape, and the shape is not particularly limited as long as it becomes a light path.

<7.2>
The mask layer 2 has a three-layer structure as described above, but is not limited to this. That is, in the above embodiment, the silver layer 242 is provided in order to shield electromagnetic waves, but other materials such as a method of providing a single layer in which silver and a ceramic layer are mixed, or an electromagnetic wave can be shielded. Copper, nickel, etc. may be laminated. In addition, the silver layer 242 is sandwiched between ceramic layers so that the silver layer 242 cannot be seen from the outside. However, in addition to covering with the ceramic layer, a member such as the cover described above can also be used. Further, it is not always necessary to provide an electromagnetic wave shielding layer, and at least a layer that cannot be seen from the outside may be formed. Further, a silver layer can be applied to hide the above-described region where distortion occurs.

The mask layer 2 can be other than black, and is not particularly limited as long as it is a dark color such as brown, gray, or dark blue that blocks the field of view from the outside of the vehicle and prevents the inside of the vehicle from being seen. In addition, a shielding film can be attached instead of ceramic. Such a film can be, for example, a dark resin film. Specifically, it can be formed of polyvinyl chloride, polyurethane, polyethylene, polyethylene terephthalate or the like, and is attached to the glass plate 1 with an adhesive. The adhesive is not particularly limited, but an acrylic adhesive or the like can be used. As such a shielding film 70, for example, ABF Film, FTW9953J Film, Black Film, and Black Out Film (for example, FRA-3045J) manufactured by Sumitomo 3M may be used. The shielding film 70 may be attached so as to overlap the mask layer 22.

Although the said embodiment demonstrated the example which fixed the bracket 41 with respect to the mask layer 2 when the mask layer 2 is formed in the inner side (inner surface of the inner side glass plate 12) of a glass plate, for example, a laminated glass When the mask layer 2 is formed on the inner surface of the outer glass plate 11 or the outer surface of the inner glass plate 12, the bracket 41 is positioned at the inner surface of the inner glass plate 12 where the mask layer 2 is formed. And are fixed at corresponding positions.

Also, the mask layer 2 can be composed of ceramic and film. For example, as shown in FIG. 15, the peripheral mask layer 21 may be formed of ceramic, and the center mask layer 22 may be formed of a film.

In the above embodiment, the main fixing material and the temporary fixing material for fixing the bracket 41 to the mask layer 2 also serve as a light shielding member, but this may be made separate. For example, a permanent fixing material and a temporary fixing material may be provided at a position unrelated to light shielding and separated from a light shielding member for light shielding. However, as described above, the light-shielding member, the main fixing material, and the temporary fixing material can be appropriately selected from various materials such as adhesives and double-sided tapes. There is no distinction between materials and temporary fixing materials.

<7.3>
The above-described measurement unit 4 is mounted near the upper center of the windshield, and a rear view mirror is generally mounted at this position. The method of attaching the rear view mirror is not particularly limited, but can be attached adjacent to the measurement unit 4 as shown in FIGS. 16 and 17. In this case, the rear view mirror 481 is fixed to the mask layer 2 via a rod-like base member 482. That is, one end of the rod-shaped base member 482 is fixed to the mask layer 2, and the rear view mirror 481 is fixed to the other end of the base member 482. At this time, the rear view mirror 481 is fixed to the base member 482 so that the angle can be changed. The rear view mirror is a well-known one, and includes a rectangular mirror support portion and a rectangular mirror fitted on one surface thereof. Then, the other end portion of the base member 482 is attached to the other surface of the mirror support portion.

Here, the base member 482 and the bracket 41 of the measurement unit 4 are fixed to the mask layer 2 by the same fixing material. That is, it is fixed with an adhesive or double-sided tape of the same material. Various adhesives can be used. For example, a urethane resin adhesive or an epoxy resin adhesive can be used. However, the use of an epoxy resin adhesive is advantageous because an adhesive strength can be obtained with a small amount of application compared to a urethane resin adhesive. In particular, since the rear view mirror 481 often changes its angle manually, the base member 482 needs to be firmly bonded to the mask layer 2. From this point, the base member 482 is masked with an epoxy resin adhesive. It is preferably fixed to the layer 2. In addition, since the epoxy resin adhesive has a higher viscosity than the urethane resin adhesive, it is difficult to flow after application, and can be prevented from protruding from the bracket 41 or the base member 482.

In particular, in the bracket 41 for mounting the sensor 5, if the adhesive protrudes to the sensor 5 side, the adhesive may interfere with the light path in the sensor 5, and in this case, there is a problem that information cannot be accurately recognized. is there. On the other hand, when the bracket is fixed to the glass plate with an epoxy resin adhesive, the applied adhesive hardly spreads and the protrusion from the bracket 41 is prevented. As a result, information can be accurately recognized.

Thus, when the base member 482 and the bracket 41 are fixed to the mask layer 2 using the adhesive, the adhesive is applied to one end of the base member and the bracket by an application device. At this time, the adhesive can be continuously applied to the base member 482 and the bracket 41 by using the same adhesive. Therefore, it is efficient. For example, the base member 482 and the bracket 41 are arranged side by side on a pallet in a production line, and the adhesive is continuously applied to these by a coating apparatus. Thereafter, the base member 482 and the bracket 41 to which the adhesive is applied are fixed to a corresponding portion of the glass plate manually or by a machine.

Also, double-sided tape can be used instead of adhesive. If a double-sided tape is used, no protrusion like an adhesive occurs, so that it is suitable for fixing a portion having a small area to the mask layer. Moreover, since the time to dry like an adhesive agent is unnecessary, the operation | work in a short time is attained.

The base member 482 may be attached by other methods than those described above. For example, the base member 482 can be fixed inside the bracket 41 as shown in FIG. That is, after fixing the bracket 41 to the mask layer 2, the base member 482 is fixed to the mask layer 2 within the frame of the bracket 41 (for example, the first opening). Next, after the sensor 5 and predetermined wiring are applied to the bracket 41, the bracket 41 is closed with the cover 42. At this time, the cover 42 is formed with a through hole or notch through which the base member 482 passes. Thereby, since the base member 482 can be integrally formed with the measurement unit 4, it becomes a simple form.

<7.4>
A bracket is not limited to the said embodiment, A various aspect is possible. That is, the bracket 41 can take various modes depending on the number and form of the sensors 5 and can be appropriately changed in size, shape, number of openings, number of support portions, and the like. Similarly, the position, size, and number of the recesses 414 can be changed. Further, the positions of the adhesive and the double-sided tape are not particularly limited.

In addition, the configuration, position, and number of the support portions 413 are not particularly limited, and may be, for example, as long as the sensor 5 can be supported. In particular, it is preferable that the light irradiation path and the light receiving path from the sensor 5 pass through a position at least 4 mm away from the periphery of the openings 231 and 232 of the mask layer 2 as described above, as shown in FIG. It is particularly preferable to pass near the center.

Further, since the glass plate 1 constituting the windshield is curved as described above, the flat bracket 41 can be attached to the glass plate 1 as follows. That is, as shown in FIG. 19, the rigidity of a part of the fixing part of the bracket 41 fixed to the glass plate 1 (mask layer 2) is lowered, and at least a part of the fixing part is bent or bent. That's fine. For example, a first region 471 having high rigidity and a second region 472 having low rigidity are formed in the fixing portion of the bracket 41. Since the second region 472 is easy to bend or bend, the fixing portion of the bracket 41 can be reliably fixed to the curve of the glass plate 1. Thereby, the mounting accuracy of the bracket 41 is improved, and the bracket 41 can be firmly fixed to the mask layer 2. A support portion 413 for attaching the sensor 5 can be attached at a position corresponding to the first region 471. Thereby, since the sensor 5 is fixed to the first region 471 having high rigidity, the sensor 5 becomes difficult to move or move together with the bracket 41, and the mounting accuracy of the sensor 5 is improved.

For convenience of explanation, FIG. 19 shows that a large gap is generated between the first region 471 and the glass plate 1, but it is assumed that such a gap does not actually occur or has occurred. Therefore, the gap may be filled with the above-described adhesive 401, double-sided tape 402, or the like, and thereby the first region 471 is firmly fixed.

The second region 472 can be formed by various methods. That is, it is sufficient if the rigidity can be made lower than that of the first region 471. For example, the width can be reduced or the thickness can be reduced as shown in FIG. Alternatively, as shown in FIG. 20B, the second region 472 can be formed of a material with low rigidity, for example, an elastically deformable material. In addition, the second region 472 can be molded into a curved shape in advance so as to follow the curvature of the glass plate, in addition to reducing the rigidity.

There are various methods for attaching the bracket 41 to the mask layer 2 (or glass plate). For example, at least one of the first region 471 and the second region 472 may be fixed to the mask layer 2. Using the fact that the second region 472 can be elastically deformed, only the second region 472 may be fixed along the curvature of the mask layer 2 or the first region 471 may be fixed.

<7.5>
The glass plate can also be formed as follows. First, a flat laminated glass 10 in which the inner glass plate 12 and the outer glass plate 11 are overlapped is prepared. In addition, the mask layer is laminated | stacked on the glass plate which comprises this laminated glass by the above methods. Then, as shown in FIG. 21, the laminated glass 10 is placed on a ring-shaped (frame-shaped) mold 800. The mold 800 is disposed on the transport table 801, and the transport table 801 passes through the heating furnace 802 and the slow cooling furnace 803 in a state where the laminated glass 10 is placed on the mold 800. In the heating furnace, heaters (not shown) are provided above and below the path of the transport table, and the laminated glass 10 is heated by the heaters.

Here, the mold will be described in more detail with reference to FIG. 22 and FIG. 22 is a plan view of the mold, and FIG. 23 is a partial cross-sectional view of FIG. 22 showing a state where a laminated glass is placed. As shown in the figure, the mold 800 includes a frame-shaped mold body 810 that substantially matches the outer shape of the laminated glass 10. Since this mold body 810 is formed in a frame shape, it has an internal space 820 that penetrates in the vertical direction. And the peripheral part of the flat laminated glass 10 is mounted in the upper surface of this type | mold main body 810. FIG. Therefore, heat is applied to the laminated glass 10 from the heater 830 disposed on the lower side through the internal space 820. Thereby, the laminated glass 10 is softened by heating and is bent downward by its own weight. In addition, the shielding board 840 for shielding heat may be arrange | positioned in the inner periphery of the type | mold main body 810, and the heat which a laminated glass receives can be adjusted by this. Specifically, in the example of FIG. 23, the shielding plate 840 extends to a position covering the bent portion b, but this suppresses heat reaching the bent portion b from the heater 830, and the bent portion b is excessively increased. Prevents bending. The heater can be provided not only below the mold 800 but also above it.

More specifically, the laminated glass 10 passes through a heating furnace 802 as shown in FIG. 21 while being supported by such a mold. When heated to near the softening point temperature in the heating furnace 802, the laminated glass 10 is bent downward on the inner side from the peripheral edge by its own weight, and is formed into a curved surface. Subsequently, the laminated glass 10 is carried into the slow cooling furnace 803 from the heating furnace 802, and a slow cooling process is performed. Thereafter, the laminated glass 10 is taken out of the slow cooling furnace 803 and allowed to cool. Thus, when the inner glass plate 12 and the outer glass plate 11 are formed in a curved shape, the intermediate film is sandwiched between them, and the above-described preliminary bonding and main bonding are performed. Thereby, a laminated glass is completed.

By the way, since the peripheral portion of the laminated glass 10 is supported by the mold body 810 of the mold, the central portion of the laminated glass 10 is lowered downward by its own weight. Thereby, a laminated glass is shape | molded by the cup shape in which the peripheral part inclined downward. More specifically, as shown in FIG. 23, approximately three regions of a concentric peripheral edge portion a, a bent portion b, and a central portion c are formed from the peripheral edge of the laminated glass 10 toward the center. In these three regions, the radius of curvature increases in the order of the bent portion b, the peripheral portion a, and the central portion c. Therefore, in the bracket 41 described above, it is necessary to arrange the bent portion a at the central portion c having the largest curvature radius.

In this way, in the laminated glass 10, the bracket 41 is attached while avoiding a portion having a particularly large distortion, so that the attachment accuracy of the bracket 41 can be improved and the attachment strength can be improved. In addition, the said shaping | molding can also be performed with respect to one glass plate instead of a laminated glass.

<7.6>
The opening formed in the mask layer 2 is a closed opening whose entire circumference is surrounded by the mask layer 2 in each of the above embodiments, but the opening in the present invention does not necessarily have to be closed. Some may be opened. For example, as shown in FIG. 24, an opening 232 that opens downward may be used. Further, the position is not limited to the lower side, and any position around the opening may be opened.

In this case, the bracket 41 is directly fixed to the glass plate 1 instead of the mask layer 2 in the open portion of the opening 232. Therefore, the double-sided tape for fixing the bracket 41 and the glass plate 1 and the light shielding member of adhesive can be visually recognized from the outside. Therefore, the light shielding member for directly fixing the bracket 41 and the glass plate 1 is preferably a double-sided tape that is difficult to visually recognize from the outside. This is because when an adhesive is used, it is crushed between the bracket 41 and the glass plate 1 and looks bad.

<7.7>
In the above-described embodiment, the concave portion 414 serving as a passage through which light passes is integrally formed in the bracket 41. However, such a concave portion can also be provided in the housing of the sensor (information acquisition device). Hereinafter, an example will be described with reference to FIGS. 25 and 26. FIG. 25 is a view of the bracket as viewed from the outside of the vehicle (a), a view of the bracket as viewed from the inside of the vehicle (b), and FIG. 26 is a view of the sensor as viewed from the outside of the vehicle. In this example, the bracket 700 is not formed with a recess as shown in FIG. That is, the bracket 700 is formed in a rectangular frame shape having a mounting opening 701 in which the sensor 500 is disposed. The bracket 700 is disposed on a rectangular main body 702 surrounding the mounting opening 701 and on both sides of the main body 702. And a support portion 703 for fixing the sensor 500. The main body 702 has a flat surface (a fixing portion of the present invention), and an adhesive 401 or a double-sided tape 402 is attached to the flat surface and fixed to the mask layer 2 or the glass plate 1. In FIG. 25A, the double-sided tape 402 extending in the horizontal direction along the lower side of the mounting opening 701 corresponds to the horizontal light shielding member of the present invention, and a pair of double-sided tapes 402 arranged on both sides thereof. This corresponds to the side light shielding member of the present invention. However, arrangement | positioning of the adhesive agent and double-sided tape in FIG. 25 is an example, and may be other than this. Further, the lateral light shielding member can be disposed on the upper side of the attachment opening 701, and the side light shielding member can also be disposed on the upper side of the attachment opening 701. Moreover, such a horizontal direction light-shielding member and side part light-shielding member can be provided in a bracket of various forms other than a bracket as shown in FIG. 13, for example.

When the bracket 700 is fixed to a mask layer having an opening that opens downward as shown in FIG. 24, the lower side of the main body 702 is disposed at the opening of the opening. Since this portion is visible from the outside, it is preferable to provide a double-sided tape 402.

As shown in FIG. 26, the sensor 500 is supported by the bracket 700 by the support portion 703 and is disposed so as to close the attachment opening 701. A recess 510 is formed on the surface of the sensor 500 facing the glass plate 1 through the mounting opening 701. The concave portion 510 is inclined so that the upper end is deepest and becomes shallower toward the lower end, and a lens 530 of various elements such as a camera, a laser light receiving element, and an irradiation element is provided on the upper wall surface 520. Although it arrange | positions, the kind and number are not specifically limited. The sensor 500 is used to photograph the outside with the camera through the recess 510 and the glass plate 1, irradiate light from the laser, and receive light. In addition, the recessed part 510 provided in this sensor 500 comprises the channel | path member of this invention, and is integrated with the information acquisition apparatus.

As described above, the main body 702 of the bracket 700 is provided with a light shielding member such as an adhesive or a double-sided tape. In particular, the light shielding member is provided so as to surround the recess 510 of the sensor 500 as shown in FIG. It is preferred that This is the same as FIG. 13 and the like in the above embodiment, and as a result, the light shielding effect when the sensor 500 is driven can be obtained as described above. Note that the form of the bracket is not limited to that shown in FIG. 25, and an attachment opening 701 is formed so that at least the concave portion 510 of the sensor 500 is exposed to the outside. Should just be provided.

1 Glass plate 2 Mask layer 22 Center mask layer 241 Upper opening (opening)
242 Lower opening (opening)
41, 700 Bracket (Mounting member)
5,500 sensor (information acquisition device)
414, 510 recess

Claims (12)

1. A windshield in which an information acquisition device that acquires information from outside the vehicle by irradiating and / or receiving light can be arranged,
   A glass plate that shields the field of view from the outside of the vehicle and has at least one opening, and is curved at least partially;
   At least a part is fixed at a position corresponding to the mask layer of the glass plate, and an attachment member to which the information acquisition device can be attached,
   When the mounting member is fixed on the mask layer, a passage member having a recess for forming a passage for light irradiation and / or light reception by the information acquisition device between the glass plate,
   With
   The information acquisition device is arranged on the inner surface of the glass plate so as to be able to acquire information through the opening,
   The mounting member includes a fixing portion that is fixed at a position at least partially corresponding to the mask layer,
   In the mounting member, the windshield, wherein at least a part of the fixing portion disposed around the recess of the passage member is fixed to the mask layer via a light shielding member.
2. The windshield according to claim 1, wherein the passage member is integrally fixed to the mounting member.
3. The windshield according to claim 1, wherein the passage member is provided in the information acquisition device.
4. The mounting member is directed from the outside of the glass plate to the information acquisition device, and is irradiated from the information acquisition device toward the glass plate with a first opening through which light received by the information acquisition device passes. A second opening for allowing light to pass through,
   The second opening communicates with the recess;
   The part of the fixing part is configured to partition the first opening and the second opening, and at least a part of the fixing part is fixed to the mask layer via the light shielding member. The windshield according to 2.
5. The attachment member is formed in a rectangular frame shape having a first side, a second side, a third side, and a fourth side, and includes a pair of support parts that support the information acquisition device.
   The first side is disposed on the upper side of the glass plate, the third side is disposed on the lower side of the glass plate,
   The support portions are disposed on the second and fourth sides,
   The first opening is disposed on the first side,
   The second opening is disposed on the third side,
   The windshield according to claim 4, wherein the concave portion is disposed along the third side and communicates with the second opening.
6. The windshield according to claim 5, wherein at least a part of the fixing portion arranged on the first side is fixed to the mask layer via the light shielding member.
7. In the fixing portion arranged around the recess,
   A lateral light-shielding member extending from one lateral end to the other lateral end of the recess;
   A pair of side light-shielding members disposed on both sides of the lateral light-shielding member;
   The windshield according to claim 1, wherein the windshield is provided.
   
8. The windshield according to any one of claims 1 to 7, wherein the light shielding member is formed of an adhesive or a double-sided tape.
9. The windshield according to claim 8, wherein the light shielding member is an epoxy resin adhesive.
10. The mask layer is configured such that a part of the periphery of the opening is not closed and is opened to the outside.
    The windshield according to any one of claims 1 to 7, wherein, in the open portion, the fixing portion of the attachment member is fixed to the glass plate by the light shielding member formed of a double-sided tape.
11. The windshield according to claim 8 or 10, wherein the light shielding member is made of a double-sided tape, and the thickness of the double-sided tape is 0.2 to 0.8 mm.
12. The windshield according to claim 1, wherein the information acquisition device includes a camera, and the camera is configured to acquire information through the opening.

Images