JP2020093966A - Manufacturing method of windshield - Google Patents

Abstract

To provide a windshield capable of preventing a failure such as contamination of foreign materials when sticking an anti-fogging sheet to a glass plate module, to provide a manufacturing method of the same, and to provide a palette and a packaging method of a windshield.SOLUTION: A manufacturing method of a windshield includes: a first step of disposing in a first workspace, a glass plate module having an imaging region transmitted by light incident on a camera; a second step of obtaining a windshield by attaching an anti-fogging sheet to the imaging region of the glass plate module in a second workspace; and a third step of moving the windshield to a third workspace.SELECTED DRAWING: Figure 7

Description

The present invention relates to a windshield having a glass plate module having a photographing region through which light incident on a camera is transmitted, and an antifogging sheet attached to the photographing region of the glass plate module, a method for manufacturing the windshield, and a pallet, And the packing method.

BACKGROUND ART In recent years, the safety performance of automobiles has been dramatically improved. One of them is to detect the distance to the front vehicle and the speed of the front vehicle in order to avoid a collision with the front vehicle, and to automatically detect the abnormal approach. A safety system in which the brake is activated has been proposed. Such a system measures the distance to the vehicle in front using a laser radar or a camera. A laser radar and a camera are generally arranged inside a windshield, and perform measurement by irradiating light such as infrared rays forward (for example, Patent Document 1).

JP, 2006-96331, A

The camera as described above is arranged on the vehicle inner surface side of the windshield, and photographs the outside of the vehicle through the windshield. However, the glass plate forming the windshield may become cloudy on a cold day or in a cold place. If the glass plate becomes cloudy in this way, there is a risk that the camera will not be able to capture images well.

As a method for solving this problem, a transparent and flexible substrate film has an antifogging layer on one main surface, and an antifogging sheet having a transparent adhesive layer on the opposite main surface is prepared in advance, It is conceivable that the antifogging sheet is attached to a predetermined portion of the glass plate with an adhesive layer. However, when such an anti-fogging sheet is attached, foreign matter may be mixed in, and such foreign matter may affect shooting by the camera.

The present invention has been made in order to solve the above problems, when sticking the anti-fog sheet to the glass plate module, it is possible to prevent problems such as mixing of foreign matter, the windshield, a manufacturing method thereof, It is an object to provide a packing method for pallets and windshields.

A method for manufacturing a windshield according to the present invention includes a first step of arranging a glass plate module having a photographing area through which light incident on a camera is transmitted in a first working space, and the glass plate module in a second working space. A second step of attaching an anti-fog sheet to obtain a windshield and a third step of moving the windshield to a third work space are provided in the photographing area of the module.

In the above windshield manufacturing method, the second work space may be provided in a clean room.

In the above windshield manufacturing method, the first work space and the third work space may be provided in a non-clean room.

In the method for manufacturing a windshield, the first working space and the third working space may be arranged adjacent to an edge portion extending in one direction of the second working space.

In the method for manufacturing a windshield, the first transfer means for transferring the glass sheet module from the first work space to the second work space, the second work space to the third work space, and the window. The 2nd conveyance means which conveys a shield can be provided.

In the method of manufacturing a windshield described above, in the first work space, the photographing area of the glass plate module can be cleaned.

In the above method for manufacturing a windshield, the second step includes a step of cleaning the photographing area of the glass plate module prior to the attachment of the antifogging sheet, and a step of attaching the antifogging sheet after the attachment of the antifogging sheet. And a step of inspecting the sheet and the photographing area.

In the method for manufacturing a windshield, in the second step, the step of cleaning the photographing area and the step of attaching the anti-fog sheet are performed at the same work position, and after the step of attaching the anti-fog sheet. The windshield can be carried by the auxiliary carrying means to perform the inspection.

In the method for manufacturing the windshield, the anti-fogging sheet may be provided with a protective film, and after the step of attaching the anti-fogging sheet, prior to the step of performing the inspection, a step of peeling the protective film is further added. Can be prepared.

The windshield manufacturing method may further include a step of attaching a cover material so as to cover the antifogging sheet after the step of performing the inspection.

In the above windshield manufacturing method, the cover material may have an adhesive layer that is not adhered to the antifogging sheet but is adhered to the glass plate module.

In the method for manufacturing a windshield, among the windshields moved from the second work space to the third work space, windshields that have passed the inspection are sequentially installed on a pallet while passing the inspection. The method may further include the step of re-inspecting the windshield that has not been performed.

The windshield according to the present invention comprises a glass plate module having a photographing region through which light incident on a camera is transmitted, and an anti-fog sheet attached to the photographing region of the glass plate module, and the anti-fog sheet is A base film attached to the photographing area and an anti-fog layer laminated on the base film are provided, a cover for the anti-fog layer is not provided, and the anti-fog layer is exposed to the outside. ..

The pallet according to the present invention is provided with a windshield having a glass plate module having a photographing region through which light incident on a camera is transmitted and an antifogging sheet attached to the photographing region of the glass plate module. A pallet, between the installation space in which the plurality of windshields are installed substantially in parallel, and between the adjacent windshields installed in the installation space, and arranged at positions not covering the anti-fog sheet And at least one spacer that is

In the windshield pallet, the spacer may be arranged so as to extend downward from the upper side of the windshield toward the anti-fog sheet.

A method for packing a windshield according to the present invention includes a glass plate module having a photographing region through which light incident on a camera is transmitted, and an antifogging sheet attached to the photographing region of the glass plate module. The method of packaging, on a pallet, a step of sequentially installing a plurality of the windshield substantially parallel, every time the windshield is installed, between the adjacent windshield, the anti-fog sheet Arranging the spacers at positions not covered with the spacers.

The packing method of the windshield may further include a step of forming the outer shapes of the plurality of windshields arranged substantially parallel to each other in a hexahedron shape, and attaching a cover so as to cover six sides of the hexahedron.

The windshield packaging method may further include the step of disposing a desiccant in the cover.

ADVANTAGE OF THE INVENTION According to this invention, when attaching an anti-fog sheet to a glass plate module, a malfunction, such as a foreign substance, can be prevented.

It is a top view showing one embodiment of the windshield concerning the present invention. It is sectional drawing of FIG. It is sectional drawing of a laminated glass. It is a block diagram showing an example of composition of an in-vehicle system. It is sectional drawing of an antifogging laminated body. It is the schematic of the manufacturing process of the windshield of FIG. It is the schematic of the manufacturing process of the windshield of FIG. It is a top view of the pallet which loads the windshield of FIG. It is a side view of FIG. FIG. 9 is a front view of FIG. 8. It is a perspective view of the loaded windshield. It is a side view which shows the procedure of packing of a windshield. It is a side view which shows the procedure of packing of a windshield. It is a perspective view of the packed windshield. It is a top view which shows the other example of the windshield before packing.

Hereinafter, an embodiment of a method for manufacturing a windshield according to the present invention will be described with reference to the drawings. When the windshield according to the present invention is attached to an automobile, a photographing device equipped with a camera is attached to the inside surface of the automobile. Then, the outside of the vehicle is photographed through the windshield by this photographing device. 1 is a plan view of the windshield, and FIG. 2 is a sectional view of FIG. For convenience of description, the vertical direction of FIG. 1 is referred to as “up/down”, “vertical”, and “vertical”, and the horizontal direction of FIG. 1 is referred to as “left/right”. FIG. 1 illustrates the windshield viewed from the inside of the vehicle. That is, the rear side of the plane of FIG. 1 is the vehicle exterior side, and the front side of the plane of FIG. 1 is the vehicle interior side.

<1. Windshield overview＞
As shown in FIGS. 1 and 2, the windshield includes a laminated glass 10 having a substantially rectangular shape, and is installed on the vehicle body in an inclined state. A mask layer 110 that shields the view from the outside of the vehicle is provided on the inner surface 130 of the laminated glass 10 that faces the inside of the vehicle, and the imaging device (information acquisition device) 2 can be seen from the outside of the vehicle by the mask layer 110. It is arranged not to. Therefore, the mask layer 110 is provided with a photographing window 113 at a position corresponding to the photographing device 2, and the photographing device 2 arranged inside the vehicle can photograph the situation outside the vehicle through the photographing window 113. .. Further, an anti-fog sheet 7 is attached at a position corresponding to the photographing window 113 on the surface of the laminated glass 10 on the inside of the vehicle.

An image processing device 3 is connected to the image capturing device 2, and a captured image acquired by the image capturing device 2 is processed by this image processing device 3. The imaging device 2 and the image processing device 3 constitute an in-vehicle system 5 (see FIG. 4), and the in-vehicle system 5 can provide various information to a passenger according to the processing of the image processing device 3. .. Hereinafter, each component will be described.

<2. Laminated glass>
FIG. 3 is a sectional view of the laminated glass. As shown in the figure, the laminated glass 10 includes an outer glass plate 11 and an inner glass plate 12, and a resin intermediate film 13 is arranged between the glass plates 11 and 12. Hereinafter, these configurations will be described.

<2-1. Glass plate>
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 heat ray absorbing glass, general clear glass, green glass, or UV green glass can also be used. However, these glass plates 11 and 12 need to realize visible light transmittance in accordance with the safety standard of the country in which the automobile is used. For example, the outer glass plate 11 can secure the necessary solar radiation absorptance, and the inner glass plate 12 can adjust the visible light transmittance so as to satisfy the safety standard. Below, an example of clear glass, heat ray absorption glass, and soda lime type glass is shown.

(Clear glass)
SiO _2: 70~73 mass%
Al ₂ O _3: 0.6~2.4 wt%
CaO: 7 to 12 mass%
MgO: 1.0-4.5 mass%
R ₂ O: 13 to 15 mass% (R is an alkali metal)
Fe total iron oxide in terms of _{2 O 3 (T-Fe 2} O 3): 0.08~0.14 wt%

(Heat absorption 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 ₂ ratio as 0-2 mass%, the proportion of TiO ₂ and 0 to 0.5 wt%, framework component of the glass (mainly, SiO ₂ and Al ₂ O ₃₎ to T-Fe ₂ O _3, CeO _The composition can be obtained by reducing the increase of ₂ and TiO ₂ .

(Soda-lime glass)
SiO _2: 65~80 mass%
Al ₂ O ₃ : 0-5% by mass
CaO: 5 to 15 mass%
MgO: 2 mass% or more NaO: 10-18 mass%
K ₂ O: 0 to 5 wt%
MgO+CaO: 5-15% by mass
Na ₂ O+K ₂ O: 10 to 20 mass%
SO _3: 0.05 to 0.3 mass%
B ₂ O _3: 0~5 wt%
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 the total thickness of the outer glass plate 11 and the inner glass plate 12 can be, for example, 2.1 to 6 mm, and 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, more preferably 2.6 to 3.4 mm, and further preferably 2.7 to 3.2 mm. Is particularly preferable. Thus, in order to reduce the weight, it is necessary to reduce the total thickness of the outer glass plate 11 and the inner glass plate 12, so the thickness of each glass plate is not particularly limited. For example, the thicknesses of the outer glass plate 11 and the inner glass plate 12 can be determined as follows.

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

Although the thickness of the inner glass plate 12 can be made equal to that of the outer glass plate 11, 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, preferably 0.8 to 1.6 mm, and particularly preferably 1.0 to 1.4 mm. preferable. Further, it is preferably 0.8 to 1.3 mm. For the inner glass plate 12, which thickness is adopted can be determined according to the application of the glass.

Here, an example of a method of measuring the thickness when the laminated glass 10 is curved will be described. First, the measurement positions are two positions above and below the center line S extending in the vertical direction at the center of the glass plate in the horizontal direction. The measuring device is not particularly limited, but for example, a thickness gauge such as SM-112 manufactured by Teclock Co., Ltd. can be used. At the time of measurement, the curved surface of the glass plate is placed on a flat surface, and the thickness of the glass plate is clamped by the thickness gauge. Even when the glass plate is flat, it can be measured in the same manner as when the glass plate is curved.

<2-2. Intermediate film>
The intermediate film 13 is formed of at least one layer, and as an example, as shown in FIG. 3, it can be composed of three layers in which a soft core layer 131 is sandwiched between outer layers 132 that are harder than this. However, the structure is not limited to this, and it may be formed of a plurality of layers including a core layer 131 and at least one outer layer 132 arranged on the outer glass plate 11 side. For example, a two-layered intermediate film 13 including the core layer 131 and one outer layer 132 arranged on the outer glass plate 11 side, or two or more even outer layers 132 on each side of the core layer 131. Alternatively, the intermediate film 13 may be disposed, or the intermediate film 13 may include the odd outer layers 132 on one side and the even outer layers 132 on the other side across the core layer 131. When only one outer layer 132 is provided, it is provided on the outer glass plate 11 side as described above, but this is to improve the damage resistance performance against external force from outside the vehicle or outdoors. Further, when the number of outer layers 132 is large, the sound insulation performance is also high.

The hardness of the core layer 131 is not particularly limited as long as it is softer than the outer layer 132. The material forming each of the layers 131 and 132 is not particularly limited, but the material can be selected based on Young's modulus, for example. 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. With such a range, it is possible to prevent the STL from decreasing in a low frequency range of approximately 3500 Hz or less. On the other hand, as described later, the Young's modulus of the outer layer 132 is preferably large in order to improve the sound insulation performance in a high frequency range, 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 750 MPa or higher, 880 MPa or higher, or 1300 MPa or higher. 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, for example, from the viewpoint of workability. For example, it is empirically known that workability, especially cutting becomes difficult when the pressure is 1750 MPa or more.

Further, as a specific material, the outer layer 132 can be made of, for example, polyvinyl butyral resin (PVB). Polyvinyl butyral resin is preferable because it has excellent adhesion to each glass plate and penetration resistance. On the other hand, the core layer 131 can be made of, for example, an ethylene vinyl acetate resin (EVA) or a polyvinyl acetal resin that is softer than the polyvinyl butyral resin forming the outer layer. By sandwiching the soft core layer between them, the sound insulation performance can be greatly improved while maintaining the adhesiveness and penetration resistance equivalent to those of the single-layer resin intermediate film.

Generally, the hardness of the polyvinyl acetal resin is controlled by (a) the degree of polymerization of polyvinyl alcohol as a starting material, (b) the degree of acetalization, (c) the type of plasticizer, and (d) the proportion of the plasticizer added. You can Therefore, even if the same polyvinyl butyral resin is used, the hard polyvinyl butyral resin used for the outer layer 132 and the soft polyvinyl butyral resin used for the core layer 131 can be prepared by appropriately adjusting at least one selected from those conditions. It is possible to make different types. Furthermore, the hardness of the polyvinyl acetal resin can be controlled also by the type of aldehyde used for acetalization, co-acetalization with a plurality of types of aldehydes, or pure acetalization with a single type of aldehyde. Although it cannot be generally stated, a polyvinyl acetal resin obtained by using an aldehyde having a large number of carbon tends to be soft. 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, A polyvinyl acetal resin obtained by acetalizing (n-octyl aldehyde) with polyvinyl alcohol can be used. In addition, when a predetermined Young's modulus is obtained, the resin is not limited to the above.

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 preferable that The thickness of the core layer 131 is preferably 0.1 to 2.0 mm, more preferably 0.1 to 0.6 mm. On the other hand, the thickness of each outer layer 132 is preferably 0.1 to 2.0 mm, more preferably 0.1 to 1.0 mm. In addition, the total thickness of the intermediate film 13 may be made constant, and the thickness of the core layer 131 may 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 175 times with a microscope (for example, VH-5500 manufactured by Keyence Corporation). Then, the thicknesses of the core layer 131 and the outer layer 132 are visually specified and measured. At this time, in order to eliminate visual variations, the number of measurements is set to 5 and the average value thereof is taken as the thickness of the core layer 131 and the outer layer 132. For example, an enlarged photograph of the cross section of the laminated glass is taken, and the core layer and the outer layer 132 are specified and the thickness thereof is measured.

The thicknesses of the core layer 131 and the outer layer 132 of the intermediate film 13 do not have to be constant over the entire surface, and may be wedge-shaped for laminated glass used in 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 thinnest portion, that is, the lowermost side portion of the laminated glass. When the intermediate film 13 has a wedge shape, the outer glass plate and the inner glass plate are not arranged in parallel, but such an 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 and the inner glass plate when using the intermediate film 13 using the core layer 131 and the outer layer 132 whose thickness increases at a change rate of 3 mm or less per 1 m is included. ..

The method for producing the intermediate film 13 is not particularly limited, but, for example, the resin components such as the polyvinyl acetal resin described above, a plasticizer, and other additives as necessary are blended, and after uniformly kneading, each layer is collectively formed. And a method of laminating two or more resin films formed by this method by a pressing method, a laminating method, or the like. The resin film before lamination used in the lamination method such as the pressing method and the lamination method may have a single-layer structure or a multi-layer structure. Further, the intermediate film 13 may be formed of a single layer, instead of being formed of a plurality of layers as described above.

<3. Mask layer>
Next, the mask layer 110 will be described. As illustrated in FIGS. 1 and 2, in the present embodiment, the mask layer 110 is laminated on the inner surface (the inner surface of the inner glass plate 12) 130 on the vehicle interior side of the laminated glass 10 and is provided on the peripheral portion of the laminated glass 10. It is formed along. Specifically, as illustrated in FIG. 1, the mask layer 110 according to the present embodiment has a peripheral region 111 along the peripheral portion of the laminated glass 10 and a rectangular shape protruding downward from the upper side portion of the laminated glass 10. It can be divided into the projecting area 112. The peripheral region 111 blocks the incidence of light from the peripheral portion of the windshield 100. On the other hand, the protruding area 112 makes the imaging device 2 arranged inside the vehicle invisible from outside the vehicle.

Further, in the protruding area 112, a rectangular photographing window (photographing area) 113 is provided at a position corresponding to the photographing apparatus 2 so that the photographing apparatus 2 can be in a condition outside the vehicle. That is, the photographing window 113 is provided independently of the non-shielding region 120 inside the mask layer 110 in the surface direction. The photographing window 113 is a region where the material of the mask layer 110 is not laminated, and the laminated glass has the above-described visible light transmittance, so that the situation outside the vehicle can be photographed. The position at which such a photographing window 113 is provided is not particularly limited, but it can be provided within a range of 200 mm from the upper side of the windshield 100, for example. Further, the position where the photographing window 113 is provided can be outside the test area B defined by JIS R 3212 (1998, “Automobile safety glass test method”).

The mask layer 110 may be laminated not only on the inner surface of the inner glass plate 12 as described above but also on the inner surface of the outer glass plate 11 and the outer surface of the inner glass plate 12, for example. Further, it may be laminated at two locations on the inner surface of the outer glass plate 11 and the inner surface of the inner glass plate 12.

Next, the material of the mask layer 110 will be described. The material of the mask layer 110 may be appropriately selected according to the embodiment as long as it can shield the visual field from the outside of the vehicle. For example, dark-colored ceramics such as black, brown, gray, and dark blue are used. Good.

When the black ceramic is selected as the material of the mask layer 110, for example, the black ceramic is laminated by screen printing on the peripheral portion on the inner surface 130 of the inner glass plate 12, and the ceramic laminated with the inner glass plate 12 is heated. To do. As a result, the mask layer 110 can be formed on the peripheral portion of the inner glass plate 12. Further, when the black ceramic is printed, a region in which the black ceramic is not printed is provided. Thereby, the photographing window 113 can be formed. Note that various materials can be used for the ceramic used for the mask layer 110. For example, a ceramic having the composition shown in Table 1 below can be used for the mask layer 110.

*1, Main component: Copper oxide, chromium oxide, iron oxide and manganese oxide *2, Main component: Bismuth borosilicate, Zinc borosilicate

<4. In-vehicle system>
Next, the in-vehicle system 5 including the image capturing device 2 and the image processing device 3 will be described with reference to FIG. FIG. 4 illustrates the configuration of the in-vehicle system 5. As illustrated in FIG. 4, the in-vehicle system 5 according to the present embodiment includes the above-described image capturing device 2 and the image processing device 3 connected to the image capturing device 2.

The image processing device 3 is a device that processes a captured image acquired by the imaging device 2. The image processing device 3 has, for example, as a hardware configuration, general hardware such as a storage unit 31, a control unit 32, and an input/output unit 33 that are connected by a bus. However, the hardware configuration of the image processing device 3 is not limited to such an example, and the specific hardware configuration of the image processing device 3 is appropriately added or omitted according to the embodiment. And can be added.

The storage unit 31 stores various data and programs used in the processing executed by the control unit 32 (not shown). The storage unit 31 may be realized by, for example, a hard disk or a recording medium such as a USB memory. The various data and programs stored in the storage unit 31 may be obtained from a recording medium such as a CD (Compact Disc) or a DVD (Digital Versatile Disc). Further, the storage unit 31 may be called an auxiliary storage device.

As described above, the laminated glass 10 is arranged in an inclined posture with respect to the vertical direction and is curved. Then, the photographing device 2 photographs the situation outside the vehicle through such a laminated glass 10. Therefore, the captured image acquired by the imaging device 2 is deformed according to the posture, shape, refractive index, optical defect, etc. of the laminated glass 10. In addition, aberrations peculiar to the camera lens of the photographing device 2 are added. Therefore, the storage unit 31 may store correction data for correcting the image deformed by the aberration of the laminated glass 10 and the camera lens.

The control unit 32 includes one or a plurality of processors such as a microprocessor or a CPU (Central Processing Unit), and peripheral circuits (ROM (Read Only Memory), RAM (Random Access Memory), interface circuit used for the processing of this processor. Etc.) and. The ROM, RAM and the like may be called a main storage device in the sense that they are arranged in an address space handled by the processor in the control unit 32. The control unit 32 functions as the image processing unit 321 by executing various data and programs stored in the storage unit 31.

The image processing unit 321 processes a captured image acquired by the imaging device 2. The processing of the captured image can be appropriately selected according to the embodiment. For example, the image processing unit 321 may recognize the subject included in the captured image by analyzing the captured image by pattern matching or the like. In the present embodiment, since the image capturing device 2 captures the situation in front of the vehicle, the image processing unit 321 further determines, based on the subject recognition, whether or not an organism such as a human is captured in front of the vehicle. Good. Then, when a person is photographed in front of the vehicle, the image processing unit 321 may output a warning message by a predetermined method. Further, for example, the image processing unit 321 may perform a predetermined processing process on the captured image. Then, the image processing unit 321 may output the processed captured image to a display device (not shown) such as a display connected to the image processing device 3.

The input/output unit 33 is one or a plurality of interfaces for transmitting/receiving data to/from a device existing outside the image processing device 3. The input/output unit 33 is, for example, an interface for connecting with a user interface or an interface such as a USB (Universal Serial Bus). In the present embodiment, the image processing device 3 is connected to the photographing device 2 via the input/output unit 33 and acquires the photographed image photographed by the photographing device 2.

As such an image processing apparatus 3, a general-purpose apparatus such as a PC (Personal Computer) or a tablet terminal may be used in addition to an apparatus designed exclusively for the provided service.

Further, the photographing device 2 is attached to a bracket (not shown), and the bracket is attached to the mask layer 110. Therefore, in this state, the attachment of the imaging device 2 to the bracket and the attachment of the bracket to the mask layer are adjusted so that the optical axis of the imaging device 2 passes through the imaging window 113. Further, a cover (not shown) is attached to the bracket so as to cover the imaging device 2. Therefore, the photographing device 2 is arranged in the space surrounded by the laminated glass 10, the bracket, and the cover so that it cannot be seen from the inside of the vehicle and only a part of the photographing device 2 can be seen from the outside of the vehicle through the photographing window 113. There is no such thing. Then, the photographing device 2 and the above-mentioned input/output unit 33 are connected by a cable (not shown), which is pulled out from the cover and connected to the image processing device 3 arranged at a predetermined position in the vehicle. ..

<5. Anti-fog sheet>
Next, the antifogging sheet 7 will be described. As described above, the antifogging sheet 7 is attached to the photographing window 113, and as shown in FIG. 5, the adhesive layer 71, the base film 72, and the antifogging layer 73 are laminated in this order. There is. In addition, the first protective sheet 74 that can be peeled off is attached to the adhesive layer 71 and the second protective sheet 75 that can be peeled off is also attached to the anti-fog layer 73 until it is fixed to the photographing window 113. The antifogging laminated body 70 is constituted by. Further, the antifogging sheet 7 is formed in a shape corresponding to the photographing window 113, but can be formed, for example, in a shape slightly smaller than the photographing window 113 (see FIG. 10). Alternatively, it may be formed so as to be larger than the photographing window 113 and to cover a part of the mask layer 110 beyond the photographing window 113. Hereinafter, each layer will be described.

<5-1. Anti-fog layer>
The anti-fogging layer is not particularly limited as long as it has the anti-fogging effect of the laminated glass plate 10, and known ones can be used. Generally, the anti-fog layer is a hydrophilic type that forms water generated from water vapor as a water film on the surface, a water-absorbing type that absorbs water vapor, a water-repellent water-absorbing type in which water droplets are hard to condense on the surface, and a water-repellent water droplet that forms from water vapor There is a water-repellent type that waters, but any type of anti-fogging layer is applicable. Hereinafter, as an example thereof, an example of a water repellent and water absorbing type anti-fog layer will be described.
[Organic-inorganic composite anti-fog layer]
The organic-inorganic composite antifogging layer is a single-layer film formed on the surface of the substrate film or a laminated multi-layer film. The organic-inorganic composite antifogging layer contains at least a water absorbent resin, a water repellent group, and a metal oxide component. The antifogging film may further contain other functional components, if necessary. The water absorbing resin may be of any type as long as it is a resin capable of absorbing and retaining water. The water-repellent group can be supplied to the antifogging film from a metal compound having a water-repellent group (water-repellent group-containing metal compound). The metal oxide component can be supplied to the antifogging film from a water-repellent group-containing metal compound or other metal compound, metal oxide fine particles, or the like. Hereinafter, each component will be described.

(Water absorbent resin)
The water absorbent resin is not particularly limited, polyethylene glycol, polyether resin, polyurethane resin, starch resin, cellulose resin, acrylic resin, epoxy resin, polyester polyol, hydroxyalkyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, Examples thereof include polyvinyl acetal resin and polyvinyl acetate. Of these, preferred are hydroxyalkyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, polyvinyl acetal resin, polyvinyl acetate, epoxy resin and polyurethane resin, and more preferred are polyvinyl acetal resin, epoxy resin and polyurethane resin. Of these, polyvinyl acetal resin is particularly preferable.

The polyvinyl acetal resin can be obtained by subjecting polyvinyl alcohol to condensation reaction with an aldehyde to form an acetal. The acetalization of polyvinyl alcohol may be carried out by a known method such as a precipitation method using an aqueous medium in the presence of an acid catalyst and a dissolution method using a solvent such as alcohol. The acetalization can also be carried out in parallel with the saponification of polyvinyl acetate. The degree of acetalization is preferably 2 to 40 mol %, more preferably 3 to 30 mol %, especially 5 to 20 mol %, and in some cases 5 to 15 mol %. The acetalization degree can be measured based on, for example, ¹³ C nuclear magnetic resonance spectroscopy. A polyvinyl acetal resin having an acetalization degree in the above range is suitable for forming an organic-inorganic composite antifogging layer having good water absorption and water resistance.

The average degree of polymerization of polyvinyl alcohol is preferably 200 to 4500, more preferably 500 to 4500. A high average degree of polymerization is advantageous for forming an organic-inorganic composite antifogging layer having good water absorption and water resistance, but if the average degree of polymerization is too high, the viscosity of the solution becomes too high, which hinders the formation of a film. It may come. The saponification degree of polyvinyl alcohol is preferably 75 to 99.8 mol %.

Examples of the aldehyde to be condensed with polyvinyl alcohol include aliphatic aldehydes such as formaldehyde, acetaldehyde, butyraldehyde, hexylcarbaldehyde, octylcarbaldehyde, and decylcarbaldehyde. Further, benzaldehyde; 2-methylbenzaldehyde, 3-methylbenzaldehyde, 4-methylbenzaldehyde, other alkyl group-substituted benzaldehyde; chlorobenzaldehyde, other halogen atom-substituted benzaldehyde; alkyl such as hydroxy group, alkoxy group, amino group and cyano group. A substituted benzaldehyde in which a hydrogen atom is replaced by a functional group excluding a group; and an aromatic aldehyde such as a condensed aromatic ring aldehyde such as naphthaldehyde and anthraldehyde can be given. An aromatic aldehyde having a strong hydrophobicity is advantageous in forming an organic-inorganic composite antifogging layer having a low degree of acetalization and excellent water resistance. The use of aromatic aldehyde is also advantageous in forming a film having high water absorption while leaving many hydroxyl groups. The polyvinyl acetal resin preferably contains an acetal structure derived from an aromatic aldehyde, particularly benzaldehyde.

Examples of the epoxy resin include glycidyl ether epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, and cycloaliphatic epoxy resin. Of these, preferred are cycloaliphatic epoxy resins.

Examples of the polyurethane resin include a polyurethane resin composed of polyisocyanate and polyol. As the polyol, acrylic polyol and polyoxyalkylene-based polyol are preferable.

The organic-inorganic composite antifogging layer contains a water absorbent resin as a main component. In the present invention, the “main component” means a component having the highest content rate on a mass basis. The content of the water absorbent resin based on the weight of the organic-inorganic composite antifogging layer is preferably 50% by weight or more, more preferably 60% by weight or more, and particularly preferably 65% from the viewpoint of film hardness, water absorption and antifogging property. It is not less than 95% by weight, more preferably not more than 90% by weight, particularly preferably not more than 85% by weight.

(Water repellent group)
In order to sufficiently obtain the above-mentioned effects of the water repellent group, it is preferable to use a water repellent group having high water repellency. Preferred water-repellent groups are (1) a chain or cyclic alkyl group having 3 to 30 carbon atoms, and (2) a chain or cyclic alkyl group having 1 to 30 carbon atoms in which at least a part of hydrogen atoms is substituted with a fluorine atom. It is at least one selected from alkyl groups (hereinafter sometimes referred to as “fluorine-substituted alkyl groups”).

Regarding (1) and (2), the chain or cyclic alkyl group is preferably a chain alkyl group. The chain alkyl group may be a branched alkyl group, but a straight chain alkyl group is preferable. An alkyl group having more than 30 carbon atoms may cloud the antifogging film. From the viewpoint of the antifogging property of the film, the balance of strength and appearance, the carbon number of the alkyl group is preferably 20 or less, more preferably 6 to 14. Particularly preferred alkyl groups are linear alkyl groups having 6 to 14 carbon atoms, particularly 6 to 12 carbon atoms, such as n-hexyl group (6 carbon atoms), n-decyl group (10 carbon atoms), n-dodecyl group ( It has 12 carbon atoms. Regarding (2), the fluorine-substituted alkyl group may be a group obtained by substituting a part of hydrogen atoms of a chain-like or cyclic alkyl group with a fluorine atom, and all the hydrogen atoms of the chain-like or cyclic alkyl group. It may be a group in which is substituted with a fluorine atom, for example, a linear perfluoroalkyl group. Since the fluorine-substituted alkyl group has high water repellency, a sufficient effect can be obtained by adding a small amount. However, if the content of the fluorine-substituted alkyl group becomes too large, it may be separated from other components in the coating liquid for forming the film.

(Hydrolysable metal compound having a water repellent group)
In order to add a water-repellent group to the antifogging film, a metal compound having a water-repellent group (water-repellent group-containing metal compound), particularly a metal compound having a water-repellent group and a hydrolyzable functional group or a halogen atom ( The water-repellent group-containing hydrolyzable metal compound) or a hydrolyzate thereof may be added to the coating liquid for forming a film. In other words, the water repellent group may be derived from a water repellent group-containing hydrolyzable metal compound. As the water-repellent group-containing hydrolyzable metal compound, a water-repellent group-containing hydrolyzable silicon compound represented by the following formula (I) is suitable.
RmSiY4-m (I)
Here, R is a water-repellent group, that is, a chain or cyclic alkyl group having 1 to 30 carbon atoms in which at least a part of hydrogen atoms may be replaced by a fluorine atom, and Y is a hydrolyzable functional group. It is a group or a halogen atom, and m is an integer of 1 to 3. The hydrolyzable functional group is, for example, at least one selected from an alkoxyl group, an acetoxy group, an alkenyloxy group and an amino group, preferably an alkoxy group, particularly an alkoxy group having 1 to 4 carbon atoms. An alkenyloxy group is, for example, an isopropenoxy group. The halogen atom is preferably chlorine. The functional groups exemplified here can also be used as “hydrolyzable functional groups” described below. m is preferably 1-2.

The compound represented by the formula (I) supplies the components represented by the following formula (II) when the hydrolysis and the polycondensation completely proceed.
RmSiO(4-m)/2 (II)
Here, R and m are as described above. After hydrolysis and polycondensation, the compound represented by the formula (II) actually forms a network structure in which silicon atoms are bonded to each other via oxygen atoms in the antifogging film.

Thus, the compound represented by the formula (I) is hydrolyzed or partially hydrolyzed, and at least a part thereof is polycondensed so that silicon atoms and oxygen atoms are alternately connected and three-dimensionally. Form a network structure of spreading siloxane bonds (Si-O-Si). The water-repellent group R is connected to the silicon atom contained in this network structure. In other words, the water-repellent group R is fixed to the siloxane bond network structure through the bond R-Si. This structure is advantageous in uniformly dispersing the water-repellent group R in the film. The network structure may contain a silica component supplied from a silicon compound other than the water-repellent group-containing hydrolyzable silicon compound represented by the formula (I) (for example, tetraalkoxysilane or a silane coupling agent). To form an antifogging film with a silicon compound having a water-repellent group-free hydrolyzable functional group or a halogen atom (water-repellent group-free hydrolyzable silicon compound) together with a water-repellent group-containing hydrolyzable silicon compound When blended with the coating liquid of (1), a siloxane-bonded network structure containing silicon atoms bonded to the water-repellent group and silicon atoms not bonded to the water-repellent group can be formed. With such a structure, it becomes easy to adjust the water repellent group content and the metal oxide component content in the antifogging film independently of each other.

The water-repellent group has the effect of improving the antifogging performance by improving the water vapor permeability on the surface of the antifogging film containing the water absorbent resin. Since the two functions of water absorption and water repellency are contradictory to each other, the water absorbing material and the water repellent material have been conventionally assigned to different layers, but the water repellent group is provided near the surface of the antifogging layer. The uneven distribution of water is eliminated, the time until dew condensation is extended, and the antifogging property of an antifogging film having a single-layer structure is improved. The effect will be described below.

The water vapor that has penetrated into the antifogging film containing the water-absorbent resin is hydrogen-bonded to the hydroxyl groups of the water-absorbent resin and is retained in the form of bound water. As the amount increases, water vapor becomes retained in the form of bound water, through semi-bound water, and finally in the form of free water retained in the voids in the anti-fog film. In the anti-fog film, the water-repellent group prevents formation of hydrogen bonds and facilitates dissociation of formed hydrogen bonds. If the water-absorbent resin content is the same, there is no difference in the number of hydroxyl groups capable of hydrogen bonding in the film, but the water-repellent group reduces the rate of hydrogen bond formation. Therefore, in an anti-fogging film containing a water-repellent group, moisture will eventually be retained in the film in any of the above forms, but by the time it is retained, it will remain as steam until the bottom of the film. Can spread. Further, the water once retained is relatively easily dissociated and easily moves to the bottom of the membrane in the state of water vapor. As a result, the distribution of the amount of retained water in the thickness direction of the film becomes relatively uniform from the vicinity of the surface to the bottom of the film. That is, since the water supplied to the film surface can be absorbed by effectively utilizing the entire thickness direction of the anti-fog film, water droplets hardly condense on the surface and the anti-fog property is enhanced. Further, since water droplets are hard to condense on the surface, the anti-fogging film absorbing water has a feature that it is hard to freeze even at a low temperature. Therefore, if this antifogging film is fixed to the information acquisition area, the visibility of the information acquisition area can be secured in a wide temperature range.

On the other hand, in the conventional anti-fogging film containing no water-repellent group, the water vapor that has penetrated into the film is very easily retained in the form of bound water, semi-bound water or free water. Therefore, the invading water vapor tends to be retained near the surface of the membrane. As a result, the water content in the film is extremely high near the surface and decreases rapidly as it goes to the bottom of the film. That is, although the bottom of the film can still absorb water, it is saturated with water and condensed as a water drop in the vicinity of the surface of the film, so that the antifogging property is limited.

When a water-repellent group is introduced into an antifogging film using a water-repellent group-containing hydrolyzable silicon compound (see Formula (I)), a strong siloxane bond (Si-O-Si) network structure is formed. The formation of this network structure is advantageous not only in terms of wear resistance but also in terms of improving hardness, water resistance and the like.

The water-repellent group may be added so that the contact angle of water on the surface of the antifogging film is 70 degrees or more, preferably 80 degrees or more, and more preferably 90 degrees or more. For the contact angle of water, a value measured by dropping 4 mg of water droplets on the surface of the membrane is adopted. In particular, when a methyl group or an ethyl group having a slightly weak water repellency is used as the water repellent group, it is preferable to mix the water repellent group in an amount such that the contact angle of water falls within the above range in the antifogging film. The upper limit of the contact angle of the water droplet is not particularly limited, but is, for example, 150 degrees or less, 120 degrees or less, and further 100 degrees or less. It is preferable that the water repellent group is uniformly contained in the antifogging film so that the contact angle of the water droplets is within the above range in all the areas of the surface of the antifogging film.

The antifogging film is in the range of 0.05 parts by mass or more, preferably 0.1 parts by mass or more, more preferably 0.3 parts by mass or more, and 10 parts by mass with respect to 100 parts by mass of the water absorbent resin. It is preferable to contain a water-repellent group so that the content is within the range of not more than 5 parts by mass, preferably not more than 5 parts by mass.

(Inorganic oxide)
The inorganic oxide is, for example, an oxide of at least one element selected from Si, Ti, Zr, Ta, Nb, Nd, La, Ce and Sn, and contains at least a Si oxide (silica). The organic-inorganic composite antifogging layer is preferably 0.01 part by weight or more, more preferably 0.1 part by weight or more, still more preferably 0.2 part by weight or more, particularly preferably 100 parts by weight of the water absorbent resin. Is 1 part by weight or more, most preferably 5 parts by weight or more, in some cases 10 parts by weight or more, if necessary 20 parts by weight or more, preferably 50 parts by weight or less, more preferably 45 parts by weight or less, further preferably Is preferably 40 parts by weight or less, particularly preferably 35 parts by weight or less, most preferably 33 parts by weight or less, and in some cases 30 parts by weight or less. The inorganic oxide is a component necessary to secure the strength of the organic-inorganic composite antifogging layer, especially the abrasion resistance, but when the content thereof is large, the antifogging property of the organic-inorganic composite antifogging layer decreases. ..

(Inorganic oxide fine particles)
The organic-inorganic composite antifogging layer may further contain inorganic oxide fine particles as at least a part of the inorganic oxide. The inorganic oxide forming the inorganic oxide fine particles is, for example, an oxide of at least one element selected from Si, Ti, Zr, Ta, Nb, Nd, La, Ce and Sn, and is preferably silica fine particles. is there. The silica fine particles can be introduced into the organic-inorganic composite antifogging layer by adding colloidal silica, for example. The inorganic oxide fine particles have an excellent effect of transmitting the stress applied to the organic-inorganic composite antifogging layer to the article supporting the organic-inorganic composite antifogging layer, and have high hardness. Therefore, the addition of the inorganic oxide fine particles is advantageous from the viewpoint of improving the wear resistance of the organic-inorganic composite antifogging layer. Further, when the inorganic oxide fine particles are added to the organic-inorganic composite antifogging layer, fine voids are formed in the portions where the fine particles come into contact with or close to each other, and water vapor is easily taken into the film from the voids. For this reason, the addition of the inorganic oxide fine particles sometimes has an advantageous effect on improving the antifogging property. The inorganic oxide fine particles can be supplied to the organic-inorganic composite antifogging layer by adding the previously formed inorganic oxide fine particles to a coating liquid for forming the organic-inorganic composite antifogging layer.

If the average particle size of the inorganic oxide fine particles is too large, the organic-inorganic composite antifogging layer may become cloudy. If it is too small, it may be difficult to aggregate and uniformly disperse. From this viewpoint, the average particle diameter of the inorganic oxide fine particles is preferably 1 to 20 nm, more preferably 5 to 20 nm. Here, the average particle size of the inorganic oxide fine particles is described in the state of primary particles. The average particle size of the inorganic oxide particles is determined by measuring the particle size of 50 particles arbitrarily selected by observation with a scanning electron microscope and adopting the average value thereof. When the content of the inorganic oxide fine particles is large, the water absorption amount of the entire organic-inorganic composite antifogging layer is reduced, and the organic-inorganic composite antifogging layer may become cloudy. The inorganic oxide fine particles are preferably 0 to 50 parts by weight, more preferably 2 to 30 parts by weight, further preferably 5 to 25 parts by weight, particularly preferably 10 to 20 parts by weight, relative to 100 parts by weight of the water absorbent resin. It is advisable to add them in such a manner that the amount becomes part.

(Hydrolysable metal compound having no water repellent group)
The antifogging film may contain a metal oxide component derived from a hydrolyzable metal compound having no water-repellent group (hydrolyzable group-free hydrolyzable compound). A preferred water-repellent group-free hydrolyzable metal compound is a hydrolyzable silicon compound having no water-repellent group. The hydrolyzable silicon compound having no water repellent group is, for example, at least one silicon compound selected from silicon alkoxide, chlorosilane, acetoxysilane, alkenyloxysilane and aminosilane (provided that it has no water repellent group), Silicon alkoxide having no water repellent group is preferred. An example of alkenyloxysilane is isopropenoxysilane.

The hydrolyzable silicon compound having no water repellent group may be a compound represented by the following formula (III).
SiY4 (III)
As mentioned above, Y is a hydrolyzable functional group, and is preferably at least one selected from an alkoxyl group, an acetoxy group, an alkenyloxy group, an amino group and a halogen atom.

The water-repellent group-free hydrolyzable metal compound is hydrolyzed or partially hydrolyzed, and at least a part thereof is polycondensed to supply a metal oxide component in which a metal atom and an oxygen atom are bonded. This component firmly joins the metal oxide fine particles and the water absorbent resin, and can contribute to the improvement of the wear resistance, hardness, water resistance and the like of the antifogging film. The metal oxide component derived from the hydrolyzable metal compound having no water repellent group is 0 to 40 parts by mass, preferably 0.1 to 30 parts by mass, more preferably 1 to 100 parts by mass of the water absorbent resin. 20 parts by mass, particularly preferably 3 to 10 parts by mass, and in some cases 4 to 12 parts by mass.

A preferable example of the hydrolyzable silicon compound having no water repellent group is tetraalkoxysilane, more specifically, tetraalkoxysilane having an alkoxy group having 1 to 4 carbon atoms. Tetraalkoxysilane is, for example, tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetraisopropoxysilane, tetra-n-butoxysilane, tetraisobutoxysilane, tetra-sec-butoxysilane and tetra-tert-silane. It is at least one selected from butoxysilane.

When the content of the metal oxide (silica) component derived from tetraalkoxysilane is excessively large, the antifogging property of the antifogging film may decrease. This is partly because the flexibility of the anti-fog film is lowered and the swelling and contraction of the film due to absorption and release of water are limited. The metal oxide component derived from tetraalkoxysilane may be added in an amount of 0 to 30 parts by mass, preferably 1 to 20 parts by mass, and more preferably 3 to 10 parts by mass with respect to 100 parts by mass of the water absorbent resin.

Another preferable example of the hydrolyzable silicon compound having no water-repellent group is a silane coupling agent. The silane coupling agent is a silicon compound having reactive functional groups different from each other. A part of the reactive functional group is preferably a hydrolyzable functional group. The silane coupling agent is, for example, a silicon compound having an epoxy group and/or an amino group and a hydrolyzable functional group. Examples of preferable silane coupling agents include glycidyloxyalkyltrialkoxysilane and aminoalkyltrialkoxysilane. In these silane coupling agents, the alkylene group directly bonded to the silicon atom preferably has 1 to 3 carbon atoms. The glycidyloxyalkyl group and the aminoalkyl group include a functional group (epoxy group, amino group) exhibiting hydrophilicity, and thus include an alkylene group, but are not water-repellent as a whole.

The silane coupling agent firmly bonds the water-absorbent resin, which is an organic component, to the metal oxide fine particles, which are an inorganic component, and can contribute to the improvement of the wear resistance, hardness, water resistance and the like of the antifogging film. However, if the content of the metal oxide (silica) component derived from the silane coupling agent is too large, the antifogging property of the antifogging film is lowered, and the antifogging film becomes cloudy in some cases. The metal oxide component derived from the silane coupling agent is in the range of 0 to 10 parts by mass, preferably 0.05 to 5 parts by mass, and more preferably 0.1 to 2 parts by mass with respect to 100 parts by mass of the water absorbent resin. It is good to add.

(Crosslinked structure)
The antifogging film may contain a crosslinked structure derived from a crosslinking agent, preferably at least one crosslinking agent selected from organic boron compounds, organic titanium compounds and organic zirconium compounds. The introduction of the crosslinked structure improves the abrasion resistance, scratch resistance and water resistance of the antifogging film. Stated from another point of view, the introduction of the crosslinked structure facilitates improving the durability of the antifogging film without deteriorating its antifogging performance.

When a crosslinked structure derived from a crosslinking agent is introduced into the antifogging film in which the metal oxide component is a silica component, the antifogging film is a metal atom other than silicon together with silicon as a metal atom, preferably boron, titanium or zirconium, May be included.

The type of the cross-linking agent is not particularly limited as long as it can cross-link the water absorbent resin to be used. Here, only the organic titanium compound will be described as an example. The organic titanium compound is, for example, at least one selected from titanium alkoxides, titanium chelate compounds, and titanium acylates. The titanium alkoxide is, for example, titanium tetraisopropoxide, titanium tetra-n-butoxide, or titanium tetraoctoxide. The titanium chelate-based compound is, for example, titanium acetylacetonate, titanium acetoacetate ethyl, titanium octylene glycol, titanium triethanolamine, or titanium lactate. The titanium lactate may be an ammonium salt (titanium lactate ammonium). Titanium acylate is, for example, titanium stearate. Preferred organic titanium compounds are titanium chelate compounds, especially titanium lactate.

When the water absorbent resin is polyvinyl acetal, a preferable crosslinking agent is an organic titanium compound, particularly titanium lactate.

(Other optional ingredients)
You may mix|blend other additives with an antifogging film. Examples of the additive include glycols such as glycerin and ethylene glycol having a function of improving antifogging property. The additive may be a surfactant, a leveling agent, an ultraviolet absorber, a coloring agent, a defoaming agent, an antiseptic agent or the like.

(Hydrophilic type)
The antifogging layer described above is a water-absorbing type containing a water-absorbent resin as a main component, but a hydrophilic type can also be adopted. The hydrophilic type has a hydrophilic resin as a main component, and a known type, for example, an antifogging layer described in JP 2011-213555 A can be used. Specifically, it is as follows.

It is preferable that a plurality of closed holes be formed inside the antifogging layer. A double-chain anionic interface in which the antifogging layer contains silicon oxide as a main component and has two carbon chains each having 6 or more carbon atoms at positions branched from the hydrophilic group. It is preferable to contain an activator and a polyol compound, and it is preferable that the silicon oxide contains silicon oxide fine particles and a silicon oxide component produced by a hydrolysis reaction and a condensation polymerization reaction of silicon alkoxide. The "closed hole" is a hole that is not opened on the film surface. The “main component” means, as is customary, the most abundant component, specifically, a component that accounts for 50% by mass or more. The “polyol compound” is a polyhydric alcohol such as diol and triol.

Further, such a hydrophilic type anti-fogging layer is formed by applying a solution for forming an anti-fogging layer containing silicon alkoxide and silicon oxide fine particles to form a coating film, and drying the coating film to form an anti-fogging layer. Can be obtained. The solution for forming the antifogging layer contains at least 1) a double-chain anionic surfactant, 2) a polyol compound, 3) silicon oxide fine particles (silica fine particles), and 4) at least a part thereof is a silicon tetraalkoxide. Silicon alkoxide,
It can be prepared by mixing 5) water, 6) organic solvent, and 7) hydrolysis catalyst. However, the hydrophilic type anti-fogging layer is not limited to this.

[Film thickness]
The film thickness of the organic-inorganic composite antifogging layer may be appropriately adjusted according to the required antifogging property and the like. The film thickness of the organic-inorganic composite antifogging layer is preferably 1 to 20 μm, more preferably 2 to 15 μm, and further preferably 3 to 10 μm.

The antifogging layer described above is an example, and other known antifogging layers can be used. For example, the antifogging layer described in JP-A-2014-14802 and JP-A-2001-146585 can be used. Various ones can be used.

<5-2. Base film>
The base film 72 is formed of a transparent resin film, and can be formed of, for example, polyethylene terephthalate, polypropylene, polyethylene, polyethylene naphthalate, polyether ether ketone, polyvinyl chloride, polyvinylidene chloride, or acrylic resin. .. Then, the resin may contain an ultraviolet absorber, if necessary.

It is preferable that such a base film 72 has a transmittance of 5% or less at a wavelength of 380 nm and a transmittance of 50% or less at a wavelength of 400 nm.

Further, since the base film 72 is a film that supports the antifogging layer 73, it needs to have a certain degree of rigidity. However, if the thickness is too large, the haze ratio tends to increase. Therefore, it is preferable that the thickness of the base film 72 is, for example, 30 to 200 μm.

<5-3. Adhesive layer>
The adhesive layer 71 may be one that can fix the base film 72 to the inner glass plate 12 with sufficient strength, as described later. Specifically, it is possible to use an adhesive layer such as a resin having a desired glass transition temperature obtained by copolymerizing acrylic, rubber, or methacrylic and acrylic monomers having tackiness at room temperature. Methyl acrylate, ethyl acrylate, butyl acrylate, stearyl acrylate, and 2-ethylhexyl acrylate can be applied as the acrylic monomer, and ethyl methacrylate, butyl methacrylate, methacrylic acid can be used as the methacrylic monomer. Isobutyl, stearyl methacrylate and the like can be applied. Moreover, when performing construction by heat lamination or the like, an organic material that is softened at the lamination temperature may be used. The glass transition temperature can be adjusted by changing the compounding ratio of each monomer in the case of a resin obtained by copolymerizing methacrylic and acrylic monomers, for example.

<5-4. Protective sheet>
The first protective sheet 74 protects the adhesive layer 71 until it is fixed to the photographing window 113 of the laminated glass 10, and a known general release sheet can be used. For example, as the first protective sheet 74, a sheet-shaped base material such as polyethylene terephthalate, polypropylene, or polyethylene coated with a release agent such as silicone can be used. That is, the surface of the base material on which the release agent is applied is attached to the adhesive layer 71. Similarly, the second protective sheet 75 is for protecting the antifogging layer 73 until it is fixed to the photographing window 113 of the laminated glass 10, and is made of the same material as the base material of the first protective sheet 74. Can be formed with. However, the release agent is not applied, and instead a weak pressure-sensitive adhesive that is easily peeled off is applied, and the base material is directly attached to the antifogging layer 73.

<5-5. Manufacturing method of anti-fog sheet>
Next, a method for manufacturing the antifogging sheet 7 will be described. First, the antifogging layer 73 is formed on one surface of the base film 72. The above-mentioned organic-inorganic composite anti-fog layer can be formed by applying a coating liquid for forming the organic-inorganic composite anti-fog layer onto an article such as a transparent substrate and drying the applied coating liquid. You can As the solvent used for preparing the coating liquid and the coating method for the coating liquid, known materials and methods may be used.

At this time, it is preferable to maintain the relative humidity of the atmosphere at less than 40%, and more preferably at 30% or less. When the relative humidity is kept low, it is possible to prevent the organic-inorganic composite antifogging layer from excessively absorbing water from the atmosphere. When a large amount of water is absorbed from the atmosphere, the water remaining in the matrix of the organic-inorganic composite antifogging layer may reduce the strength of the film.

The coating liquid drying step preferably includes an air drying step and a heat drying step involving heating. The air-drying step may be carried out by exposing the coating liquid to an atmosphere in which the relative humidity is kept at less than 40%, further 30% or less. The air drying step can be performed as a non-heating step, in other words, at room temperature. When the coating liquid contains a hydrolyzable silicon compound, in the heating and drying step, a dehydration reaction involving the silanol group contained in the hydrolyzate of the silicon compound and the hydroxyl group present on the article proceeds, A matrix structure (Si—O bond network) consisting of atoms and oxygen atoms develops. The air-drying step can be performed, for example, for about 10 minutes.

In order to avoid decomposition of organic substances such as water-absorbent resin, the temperature applied in the heating and drying step should not be excessively high. A suitable heating temperature in this case is 300° C. or lower, for example, 100 to 200° C. Specifically, three steps can be performed. For example, it is baked at a temperature of about 120° C. for about 5 minutes, dried at a temperature of about 80° C. and a humidity of 90% for about 2 hours, and then baked at a temperature of about 120° C. for about 30 minutes. Thus, the film formation of the antifogging layer 73 is completed. Then, in order to protect the antifogging layer 73, the second protective sheet 75 is attached on the antifogging layer 73.

Next, after applying the adhesive layer 71 to the other surface of the base film 72, the first protective sheet 74 is attached. In this way, the antifogging laminated body 70 is completed. As described above, the antifogging laminate is cut into a required size and then attached to the photographing window 113 as described later.

<6. Windshield manufacturing method>
Next, an example of a method for manufacturing the windshield will be described. First, the glass plate manufacturing line will be described.

<6-1. Manufacturing method of laminated glass>
As shown in FIG. 6, in this manufacturing 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 forming device 902 and the downstream side thereof, and the outer glass plate 11 and the inner glass plate 12 to be processed are conveyed by the roller conveyor 903. .. These glass plates 11 and 12 are formed in a flat plate shape before being carried into the heating furnace 901. For example, the above-described mask layer 110 is provided on the inner surface (the surface on the inner side of the vehicle) of the inner glass plate 12. After being stacked, they are loaded into the heating furnace 901. Note that, as described above, the mask layer 110 can be laminated on a part other than the inner surface of the inner glass plate 12.

The heating furnace 901 may have various configurations, but may be, for example, an electric heating furnace. This heating furnace 901 is provided with a rectangular tube-shaped furnace body whose upstream and downstream ends are open, and a roller conveyor 903 is arranged in the furnace body from upstream to downstream. Heaters (not shown) are arranged on the upper and lower surfaces of the inner wall surface of the furnace body, and on a pair of side surfaces, respectively, and the temperature at which the glass plates 11 and 12 passing through the heating furnace 901 can be formed, for example, glass. Heat to near the softening point.

The molding device 902 is configured to press the glass plates 11 and 12 with the upper mold 921 and the lower mold 922 to mold them into a predetermined shape. The upper mold 921 has a downward convex curved surface shape that covers the entire upper surfaces of the glass plates 11 and 12, and is configured to be vertically movable. The lower mold 922 is formed in a frame shape corresponding to the peripheral portions of the glass plates 11 and 12, and the upper surface thereof has a curved shape so as to correspond to the upper mold 921. With this configuration, the glass plates 11 and 12 are press-molded between the upper mold 921 and the lower mold 922 to be molded into a final curved shape. A roller conveyor 903 is arranged in the frame of the lower mold 922, and the roller conveyor 903 is vertically movable so as to pass through the frame of the lower mold 922. Although not shown, a slow cooling device (not shown) is arranged on the downstream side of the forming device 902 to cool the formed glass sheet.

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 for driving. Then, by adjusting the rotation speed of each roller 931, the conveyance speed of the glass plates 11 and 12 can also be adjusted. The lower mold 922 of the molding device 902 may be in contact with the entire surfaces of the glass plates 11 and 12. In addition, the forming device 902 is not particularly limited in the form of the upper mold and the lower mold as long as it molds a glass plate.

In this way, when the outer glass plate 11 and the inner glass plate 12 are formed, subsequently, the intermediate film 13 is sandwiched between the outer glass plate 11 and the inner glass plate 12, put in a rubber bag, and vacuum suction is performed. While pre-bonding at about 70-110°C. Other pre-bonding 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 in an oven at 45 to 65°C. Then, this laminated glass is pressed by a roll at 0.45 to 0.55 MPa. Next, this laminated glass is heated again at 80 to 105° C. in an oven and then pressed again by a roll at 0.45 to 0.55 MPa. Thus, the pre-bonding is completed.

Next, main bonding is performed. The preliminarily adhered laminated glass is subjected to main adhesion by an autoclave at, for example, 8 to 15 atm and 100 to 150°C. Specifically, for example, the main adhesion can be performed under the conditions of 14 atm and 145° C. In this way, the laminated glass according to the present embodiment is manufactured. However, this manufacturing method is an example, and it can be manufactured by so-called self-weight bending other than pressing.

<6-2. Pasting anti-fog sheet>
Next, the attachment of the antifogging sheet 7 to the laminated glass 10 will be described. The attachment of the anti-fog sheet 7 is performed in a facility as shown in FIG.

As shown in the figure, this facility has three work spaces. That is, the rectangular first work space 81, the second work space 82, and the third work space 83 that are adjacent to each other are provided. The second work space 82 is formed in a rectangular shape, and the first work space 81 and the third work space 83 are arranged side by side so as to be adjacent to one long side thereof. That is, these three work spaces 81 to 83 are arranged in a substantially U shape.

The second work space 82 is provided in a clean room, and the first work space 81 and the third work space 83, which are non-clean rooms, are arranged outside the clean room. A first transfer device 84 such as a roller conveyor that transfers the laminated glass 10 is arranged between the first work space 81 and the second work space 82. Then, a carry-in port 821 into which the laminated glass 10 is carried is formed on a surface of the second work space 82 adjacent to the first work space 81, and the first work space 81 is loaded by the above-described first transport device 84. The laminated glass 10 is conveyed from the second to the second work space 82 via the carry-in port 821. A door 822 is provided at the carry-in port 821, and the door 822 is opened when the laminated glass 10 is carried in.

On the other hand, between the second work space 82 and the third work space 83, a second transfer device 85 for transferring the windshield 100 having the antifogging sheet 7 attached thereto is arranged. Then, on the surface of the second work space 82 adjacent to the third work space 83, the carry-out port 823 for carrying out the windshield 100 to which the anti-fog sheet 7 is attached is formed, and the above-described second transfer is performed. The device 85 conveys the windshield 100 from the second work space 82 to the third work space 83 via the carry-out port 823. A door 824 is provided at the carry-out port 823, and the door 824 is opened when the windshield 100 is carried out.

Further, a third transfer device 86 extending in the longitudinal direction is also arranged in the second work space 82. The third transfer device 86 is also formed by a conveyor such as a roller conveyor. The third transfer device 86 is a device that connects the first transfer device 84 and the second transfer device 85. That is, the laminated glass 10 transferred from the first transfer device 84 is a device for transferring the laminated glass 10 to the second transfer device 85, and extends along the longitudinal direction of the second work space 82. Further, two work areas, that is, a first work area 801 and a second work area 802 are provided on the transport path of the third transport device 86. The first work area 801 is arranged on the upstream side of the third transfer device 86, and the second work area 802 is arranged on the downstream side thereof. The antifogging sheet 7 is attached in the first work area 801, and the foreign matter inspection is performed in the second work area 802.

Next, the attachment of the anti-fog sheet 7 in the above facility will be described. First, in the first work space 81, the laminated glass 10 is placed on the first transport device 84. At this time, the laminated glass 10 is arranged with the inner glass plate 12 to which the antifogging sheet 7 is attached facing upward. Next, the photographing window 113 on the inner glass plate 12 is cleaned. For example, the photographing window 113 is wiped with a known cleaning sheet, and cleaning is performed by brushing dust with a brush.

After the cleaning is completed in this way, the door 822 of the carry-in port 821 is opened, and then the laminated glass 10 is transported into the second work space 82 by the first transport device 84. Next, the laminated glass 10 is transferred to the third transfer device 86 and transferred by the third transfer device 86. Then, the laminated glass 10 is temporarily stopped in the first work area 801, and during the stop, the work of attaching the anti-fog sheet 7 to the photographing window 113 is performed. At this time, air is supplied near the photographing window 113 to prevent dust from adhering to the photographing window 113. Then, during the supply of this air, the first protective sheet 74 is peeled from the anti-fog sheet 7 and the adhesive layer 71 is attached to the photographing window 113. In this way, the windshield 100 is completed. The antifogging sheet 7 may be attached by a human hand or a machine. After that, the windshield 100 is transported by the third transport device 86 and temporarily stopped in the second work area 802. In the second work area 802, the second protective sheet 75 is peeled off from the antifogging sheet 7. As a result, the antifogging layer 73 is exposed.

In this state, it is inspected whether or not foreign matter such as dust is mixed between the antifogging sheet 7 and the photographing window 113 and on the antifogging layer 73. The inspection can be performed visually by an operator, and the foreign matter inspection can be performed by photographing the vicinity of the antifogging layer 73 with a camera and performing image processing. In addition to the foreign matter inspection, it is possible to inspect the position of whether or not the antifogging sheet 7 is attached at the correct position. After the foreign matter inspection is completed, the windshield 100 is transferred to the second transfer device 85, the door 824 of the carry-out port 823 is opened, and then the windshield 100 is transferred to the third work space 83 by the second transfer device 85. To do. Then, the windshields 100 that have not been determined to contain foreign matter are sequentially arranged on the pallet 6. That is, the windshield 100 is arranged on the pallet 6 with the antifogging layer 73 exposed to the outside. On the other hand, when it is determined that the foreign matter is mixed, the foreign matter is determined by visual inspection again. When it is determined that there is no foreign matter, the foreign matter is placed on the pallet 6. On the other hand, when it is determined that the foreign matter is mixed, the antifogging sheet 7 is peeled off, and then the antifogging sheet 7 is attached to the first working space 81 again.

<7. Windshield packaging>
Next, a method for packing the windshield will be described. First, the pallet 6 described above will be described with reference to FIGS. 8 to 10. 8 is a plan view of the pallet, FIG. 9 is a side view of FIG. 8, and FIG. 10 is a front view of FIG. As shown in FIGS. 8 to 10, the pallet 6 includes a base 61 on which a plurality of windshields 100 are installed, and a pair of guide members 62 arranged on the upper surface of the base 61. The base 61 is formed in a rectangular shape in a plan view surrounded by a front end side 611, a rear end side 612, and a pair of side sides 613. A first frame 63 and a pair of second frames 64 extending upward are provided on three sides except the front end side 611. The first frame 63 is provided on the rear end side 612 of the base 61, and the pair of second frames 64 is provided on the side edges 613 of the base 61, respectively. Therefore, the space above the base 61 is opened to the outside through the front end side 611, and thus the windshield 100 is arranged on the base 61 from the front end side 611.

The two guide members 62 are arranged in parallel at a predetermined interval so as to extend from the front end side 611 side to the rear end side 612 side. A plurality of laterally extending grooves 621 are formed in each guide member 62 at predetermined intervals. The respective windshields 100 are fitted into the grooves 621 of the guide members 62, respectively, so that the plurality of windshields 100 are arranged parallel to each other in the front-rear direction of the pallet 6.

As shown in FIG. 9, a cushioning material 65 is arranged on the first frame 63, and the windshield 100 arranged closest to the rear end side 612 is arranged so as to lean on the cushioning material 65. Therefore, the plurality of windshields are arranged in a state of being slightly inclined toward the rear end side. However, for convenience of description, in FIG. 9, the windshield 100 is drawn so as to stand upright.

Further, on the pallet 6, a pair of strings 66 and a plurality of spacers 67 suspended from each string 66 are arranged above the windshield. Each spacer 67 includes an engaging portion 671 having a through hole through which the cord 66 is passed, and a plate-shaped main body portion 672 connected to the lower end of the engaging portion 671. Has been formed. The spacers 67 suspended from the pair of cords 66 are arranged so as to sandwich the photographing window 113 of each windshield 100. The spacer 67 is formed of an elastic material such as rubber, urethane, or a foam material. Further, since each string 66 is passed through the through holes of the plurality of spacers 67, it can be said that each string 66 is supported by the spacer 67.

Then, as shown in FIG. 10, each spacer 67 hangs downward from the upper side of the windshield 100, and the two spacers 67 are arranged so as to sandwich the anti-fogging sheet 7 attached to the photographing window 113. That is, two spacers 67 are arranged every time the windshield 100 is arranged on the base 61. Therefore, the adjacent windshields 100 are arranged with a space provided by the spacer 67. Further, since the antifogging sheet 7 is covered, the antifogging sheet 7 can be protected.

Thus, when the windshields 100 and the spacers 67 are alternately arranged and the predetermined number of windshields 100 are arranged on the base 61, the outer shapes of the plurality of windshields 100 are rectangular parallelepiped, as shown in FIG. It is formed. Following this, a cover sheet 68 such as a resin film covers the six sides of the rectangular parallelepiped for packaging.

As shown in FIG. 12, the cover sheet 68 is arranged on the base 61 so as to cover the guide member 62 before the windshield 100 is arranged so that the cover sheet 68 can be packed. It is arranged so as to pass through the front surface of 65 and extend upward along the first frame 63. The front end of the cover sheet 68 is arranged so as to slightly protrude from the front end side 611 of the base 61, and the rear end thereof is arranged so as to extend rearward of the first frame 63. Further, both sides of the cover sheet 68 are formed so as to be sufficiently protruded from both sides of the base 61.

Then, when the predetermined number of windshields 100 are arranged on the base 61, first, the bar 66 is removed from the first frame 63. Next, as shown in FIG. 13, the rear end portion of the cover sheet 68 extending rearward of the first frame 63 is pulled out to the front side through the upper side of the windshield 100, and is further arranged at the forefront. Pull down to cover the windshield 100. Then, the front end of the cover sheet 68 protruding from the front end side 611 of the base 61 is covered with the rear end of the cover sheet 68 pulled out from above, and these are fixed with tape or the like. As a result, the lower surface, rear surface, top surface, and front surface of the rectangular parallelepiped windshield 100 are covered with the cover sheet 68. Then, both sides of the rectangular parallelepiped are covered with the cover sheet 68 protruding to the side of the windshield 100, and fixed with tape. In this way, as shown in FIG. 14, all six surfaces of the plurality of windshields 100 installed in a rectangular parallelepiped shape are covered with the cover sheet 68, and the packaging is completed. Then, the packed windshield 100 is moved together with the pallet 6.

Further, since the bracket for the photographing device 2 is attached to the windshield 100, the packed windshield 100 can be transported to another work place or facility.

<8. Features>
According to the windshield described above, the following effects can be obtained. First, by attaching the anti-fog sheet 7 to the photographing window 113 of the mask layer 110, it is possible to prevent the photographing window 113 from being fogged. Therefore, when the image capturing device 2 receives light through the image capturing window 113, it is possible to prevent problems such as clouding of the image capturing window 113 hindering the passage of light and preventing accurate measurement.

Further, the attachment of the anti-fog sheet 7 is performed in the second work space 82 which is separated from the first work space 81 into which the laminated glass 10 is carried in and the third work space 83 in which the windshield 100 is carried out. Therefore, it is possible to prevent foreign matter such as dust from entering between the antifogging sheet 7 and the laminated glass 10 when the antifogging sheet is attached. In particular, since the second work space 82 is a clean room, it is possible to more reliably prevent foreign matter from entering.

Since the first to third work spaces 81 to 83 are arranged adjacent to each other so as to form a U shape, the entire work space can be made compact.

In the present embodiment, since the foreign matter inspection is performed after the second protective sheet 75 is peeled off, when the foreign matter is attached to the antifogging sheet 7, the antifogging sheet 7 can be directly observed. Easy to find.

Since the spacer 67 is arranged between the plurality of windshields arranged on the pallet 6 so as to cover the antifogging sheet 7, the antifogging sheet 7 can be protected more reliably.

Further, since the plurality of windshields 100 are arranged so that their outer shapes are hexahedral and are packaged by the cover sheet 68 so as to cover all of the six surfaces, foreign matter can be further prevented from entering. A desiccant may be placed inside the cover sheet 68. Thereby, it is possible to prevent the moisture absorption performance of the antifogging sheet 7 from being absorbed during the transportation and the deterioration of the water absorption performance. Further, it is possible to prevent dew condensation on the windshield. Accordingly, it is possible to prevent the anti-fogging sheet or the like from being soiled due to the burning or soiling of the glass plate, or the soiling being aggregated by dew condensation water.

<9. Modification>
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. The following modifications can be combined as appropriate.

<9-1>
The configuration of the antifogging sheet 7 shown in the above embodiment is an example, and other configurations are possible.

<9-2>
A part or all of the mask layer 110 may be formed of a shielding film that can be attached to the laminated glass 10 to shield the visual field from the outside of the vehicle. When the shielding film is attached to the outer surface of the inner glass plate 12, the attachment can be performed before the pre-adhesion or after the main adhesion. Further, the shape of the mask layer 110 is not particularly limited, and various modifications including the shape of the photographing window 113 are possible.

Further, in the laminated glass 10, from the viewpoint of preventing fogging of the passage of light, the mask layer 110 is not always necessary, and if the anti-fogging sheet 7 is attached to a region through which light passes (imaging region). Good.

<9-3>
In the above embodiment, the image capturing device 2 having a camera is used as the information acquisition device of the present invention, but the information acquisition device is not limited to this, and various information acquisition devices can be used. That is, it is not particularly limited as long as it irradiates and/or receives light in order to acquire information from outside the vehicle. For example, it can be applied to various devices such as a laser radar, a light sensor, a rain sensor, and a light receiving device that receives a signal from outside the vehicle such as an optical beacon. Further, an opening (information acquisition region) such as the photographing window 113 can be appropriately provided in the mask layer 110 according to the type of light, and a plurality of openings can be provided. For example, when a stereo camera is provided, two photographing windows are formed on the mask layer 110, and an anti-fog sheet is attached to each photographing window.

<9-4>
In the above-described embodiment, in the second working space, the anti-fog sheet 7 is attached after the cleaning is performed by blowing air to the photographing window 113 to remove dust, but the photographing window 113 is cleaned in the first working space. When performing, the antifogging sheet 7 can be attached without cleaning in the second work space.

<9-5>
In the above-described embodiment, the second work space is provided in the clean room, but it does not have to be the clean room, and if it is separated from at least the first and third work spaces, foreign matter can be prevented from entering.

<9-6>
In the above embodiment, the first to third work spaces 81 to 83 are arranged in a U shape, but the present invention is not limited to this, and the first, second, and third work spaces 81 to 83 are arranged in this order. It can also be arranged in a straight line. This eliminates the need to change the direction of the laminated glass between the transport devices, and thus the work can be effectively performed, for example, the work can be performed by one transport device.

<9-7>
In the above embodiment, laminated glass is used as the glass plate module according to the present invention, but the invention is not limited to this. That is, the present invention is not limited to laminated glass, and any glass plate having a photographing region through which light incident on a camera is transmitted is an application target of the present invention.

<9-8>
In the above-described embodiment, the windshield 100 is packed with the second protective sheet peeled off and the antifogging layer 73 exposed, but a protective cover (cover material) is provided to protect the antifogging layer 73. You can also For example, as shown in FIG. 15, a protective cover 500 that covers the antifogging sheet 7 is attached to the windshield. The protective cover 500 is formed of a resin film or the like, and an adhesive layer 501 is provided on the peripheral portion thereof. Then, the protective cover 500 is attached to the windshield 100 by the adhesive layer 501. At this time, the adhesive layer 501 is prevented from coming into contact with the antifogging sheet 7. The provision of such a protective cover 500 can also protect the antifogging sheet 7.

<9-9>
The number and the position of the spacers 67 are not particularly limited. For example, among the laminated windshields 100, the frontmost windshield 100 contacts the cover sheet 68, but the cover sheet 68 may contact the anti-fog film 7. Therefore, in order to avoid transfer of the plasticizer or the like on the cover sheet 68, in order to avoid contact between the cover sheet 68 and the anti-fog film 7, the spacer 67 may be arranged in the front row. Although a plurality of spacers are connected by a string, the number and position of the strings are not particularly limited. Further, in order to connect the plurality of spacers 67, a connecting means other than a string may be used, or a connecting means such as a string may not be used.

<9-10>
The packing method of the windshield is not particularly limited, and the six surfaces of the stacked windshields may be covered with the cover sheet 68. Further, the cover sheet may be covered with a plurality of cover sheets instead of one cover sheet. However, for example, when the lower sheet is arranged inside as shown in FIG. 13, it is difficult for dust falling from above to enter.

10 Laminated glass (glass plate module)
100 Windshield 113 Shooting window (opening)
7 Antifogging Sheet 81 First Working Space 82 Second Working Space 83 Third Working Space 84 First Conveying Device (First Conveying Means)
85 Second Transport Device (Second Transport Means)
86 Third Transfer Device (Auxiliary Transfer Device)
500 Protective cover (cover material)

Claims (18)

A first step of arranging a glass plate module having a photographing area through which light incident on the camera is transmitted in a first work space;
In the second work space, a second step of installing a windshield by attaching an anti-fog sheet to the photographing area of the glass plate module,
A third step of moving the windshield to a third work space,
A method of manufacturing a windshield, comprising: The method for manufacturing a windshield according to claim 1, wherein the second work space is provided in a clean room. The method for manufacturing a windshield according to claim 2, wherein the first work space and the third work space are provided in a non-clean room. 4. The windshield manufacturing method according to claim 1, wherein the first working space and the third working space are arranged so as to be adjacent to an edge portion of the second working space that extends in one direction. Method. First transfer means for transferring the glass plate module from the first work space to the second work space;
Second transport means for transporting the windshield from the second work space to the third work space;
The method for manufacturing a windshield according to any one of claims 1 to 4, further comprising: The method for manufacturing a windshield according to claim 1, wherein the imaging area of the glass plate module is cleaned in the first work space. The second step is
Prior to the attachment of the anti-fog sheet, a step of cleaning the photographing area in the glass plate module,
After mounting the anti-fog sheet, inspecting the anti-fog sheet and the photographing area,
The method for manufacturing a windshield according to claim 1, further comprising: In the second step,
The step of cleaning the photographing area and the step of attaching the anti-fog sheet are performed at the same work position,
The method for manufacturing a windshield according to claim 7, wherein after the step of attaching the anti-fog sheet, the windshield is conveyed by an auxiliary conveying means to perform the inspection. The antifogging sheet is provided with a protective film,
The method for manufacturing a windshield according to claim 7, further comprising a step of peeling off the protective film after the step of attaching the antifogging sheet and prior to the step of performing the inspection. The method for manufacturing a windshield according to claim 7, further comprising a step of attaching a cover material so as to cover the antifogging sheet after the step of performing the inspection. The method for manufacturing a windshield according to claim 10, wherein the cover material has an adhesive layer that is not adhered to the anti-fog sheet but is adhered to the glass plate module. Among the windshields that have been moved from the second work space to the third work space, the windshields that have passed the inspection are sequentially installed on the pallet, while the windshields that have not passed the inspection are re-installed. The windshield manufacturing method according to claim 1, further comprising a step of performing an inspection. A glass plate module having a photographing region through which light incident on the camera is transmitted,
An anti-fog sheet attached to the photographing area of the glass plate module,
Equipped with
The anti-fog sheet comprises a base film attached to the photographing area, and an anti-fog layer laminated on the base film, and a cover for the anti-fog layer is not provided, and the anti-fog layer is external. Exposed to the windshield. A pallet in which a windshield having a glass plate module having a shooting area through which light incident on a camera is transmitted, and an anti-fog sheet attached to the shooting area of the glass plate module is installed,
An installation space in which the plurality of windshields are installed substantially in parallel,
Between the adjacent windshields installed in the installation space, at least one spacer that is respectively arranged at a position that does not cover the anti-fog sheet,
Equipped with a pallet. The pallet according to claim 14, wherein the spacer is arranged so as to extend downward from an upper side of the windshield toward the anti-fog sheet. A method for packing a windshield, comprising: a glass plate module having a shooting area through which light incident on a camera is transmitted; and an anti-fog sheet attached to the shooting area of the glass plate module,
On the pallet, sequentially installing a plurality of the windshield substantially parallel,
Every time the windshield is installed, between the adjacent windshields, a step of disposing spacers at positions not covering the anti-fog sheet, and
Windshield packaging method that is equipped with. The outer shape of the plurality of windshields arranged substantially in parallel is formed in a hexahedral shape,
The method of packaging a windshield according to claim 16, further comprising a step of attaching a cover so as to cover six sides of the hexahedron. 18. The method of packaging a windshield of claim 17, further comprising disposing a desiccant within the cover.