WO2020256114A1 - Vehicle window with information acquisition device - Google Patents

Vehicle window with information acquisition device Download PDF

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Publication number
WO2020256114A1
WO2020256114A1 PCT/JP2020/024164 JP2020024164W WO2020256114A1 WO 2020256114 A1 WO2020256114 A1 WO 2020256114A1 JP 2020024164 W JP2020024164 W JP 2020024164W WO 2020256114 A1 WO2020256114 A1 WO 2020256114A1
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WO
WIPO (PCT)
Prior art keywords
cover
vehicle
surface portion
information acquisition
acquisition device
Prior art date
Application number
PCT/JP2020/024164
Other languages
French (fr)
Japanese (ja)
Inventor
良夫 飯塚
章 宇惠野
康史 永田
二郎 ▲西▼▲濱▼
田中　慎也
紀穂 山口
Original Assignee
Ａｇｃ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ａｇｃ株式会社 filed Critical Ａｇｃ株式会社
Publication of WO2020256114A1 publication Critical patent/WO2020256114A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/04—Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle

Definitions

  • the present invention relates to a window glass for a vehicle with an information acquisition device.
  • the windshield with a vehicle front information acquisition device disclosed in Patent Document 1 includes a windshield, a bracket, a vehicle front information acquisition sensor, and a cover. ..
  • the above bracket is fixed to the indoor surface of the windshield, and the vehicle front information acquisition sensor is attached to this bracket.
  • the cover has a cross-sectional shape curved in a concave shape so as to accommodate the vehicle front information acquisition sensor with the bracket, and is attached to the bracket on the indoor side of the windshield.
  • Patent Documents 2, 3 and 4 also disclose vehicle windowpanes with an information acquisition device similar to Patent Document 1.
  • the cover disclosed in Patent Document 2-4 is provided with a slit, and in particular, Patent Document 2 describes that the cover is provided with a slit, and Patent Document 4 describes that the cover is provided with a slit for heat dissipation.
  • JP-A-2016-144966 Japanese Unexamined Patent Publication No. 2013-151291 Japanese Unexamined Patent Publication No. 2016-187988 JP-A-2018-12406
  • the information acquisition device attached to the window glass raises the temperature due to its own heat generation or heating by solar radiation. Therefore, the cover is provided with a slit for the purpose of suppressing overheating of the information acquisition device (see Patent Document 2-4).
  • the ratio of the total area occupied by the through holes as slits in the opening region formed in the cover disclosed in Patent Document 2-4 is about 10% to 20% of the area of the outer surface of the cover. .. That is, since the opening area of the conventional cover is not sufficient, the air heated by the heat generated by the information acquisition device itself or the heating by solar radiation stays in the space surrounded by the cover and the window glass, and the operation of the information acquisition device. There was a concern that it would affect.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a window glass for a vehicle with an information acquisition device that can achieve both heat dissipation and breathability of a cover.
  • the vehicle window glass with an information acquisition device of the present invention has a vehicle window glass, a bracket fixed to the indoor surface of the vehicle window glass, and information attached to the bracket in order to achieve the object of the present invention.
  • a vehicle windowpane with an information acquisition device comprising an acquisition device and a cover that is attached to a bracket on the interior side of the vehicle windowpane to form a storage space for accommodating the information acquisition device together with the bracket, the cover is accommodated. It has an opening area composed of a plurality of through holes that communicate the space and the interior space of the vehicle, and the ratio of the total area occupied by the through holes in the opening area is 30% or more of the area of the outer surface of the cover.
  • both heat dissipation and breathability of the cover can be achieved.
  • FIG. 1 It is an overall perspective view of the window glass for a vehicle with an information acquisition device which concerns on one of the Embodiments by this invention. It is an assembly perspective view of the window glass for a vehicle with an information acquisition device shown in FIG. It is a perspective view which attached the cover to the interior surface side of the window glass for a vehicle. It is a development view of a cover. It is explanatory drawing of the method of calculating the opening ratio of a mesh hole. It is sectional drawing which showed that the axis of the mesh hole was inclined with respect to the normal of the surface part. It is a perspective view of the cover which showed the 1st other arrangement form of the opening area with respect to a cover.
  • the terms indicating the directions of "up”, “down”, “front”, “rear”, “left”, and “right” are the directions when the traveling direction of the vehicle is "front”. Point to.
  • FIG. 1 is an overall perspective view of a vehicle window glass 10 with an information acquisition device according to one of the embodiments of the present invention when viewed from the inside of the vehicle.
  • the illustrated vehicle window glass 10 with an information acquisition device is configured to have a substantially trapezoidal shape and is applied to a windshield.
  • the vehicle window glass with an information acquisition device of the present invention is a rear glass other than the windshield. It can also be applied to other vehicle windowpanes.
  • the side portion 10A is the upper side portion
  • the side portion 10B is the lower side portion
  • the side portion 10C is the left side portion
  • the side portion 10D is the side portion. It is on the right side.
  • the vehicle window glass 12 constituting the vehicle window glass 10 with an information acquisition device is provided with a shielding layer 14 made of black ceramics in the peripheral portion thereof.
  • the shielding layer 14 is formed by applying black ceramic printing ink to a glass surface and baking it.
  • the shielding layer 14 forms a black opaque layer around the vehicle window glass 12.
  • FIG. 2 is an assembled perspective view of the window glass 10 for a vehicle with an information acquisition device shown in FIG. 1, and the main part is enlarged.
  • the vehicle window glass 10 with an information acquisition device includes a vehicle window glass 12 (see FIG. 1), a bracket 16, an information acquisition device 18, and a cover 20.
  • the bracket 16 is fixed to the indoor surface of the vehicle window glass 12.
  • the bracket 16 is a rectangular plate-like body having a rectangular opening 22 at the center, and an adhesive (not shown) in a state where the opening 22 is overlapped with the opening 24 of the convex shielding layer 14A. Is fixed to the vehicle window glass 12.
  • the convex shielding layer 14A to which the bracket 16 is fixed is a portion formed downwardly in a central portion in the left-right direction of the upper shielding layer 14B along the side portion 10A.
  • the cover 20 is provided with a through hole through which the stay penetrates so that the stay and the cover 20 do not interfere with each other.
  • the bracket 16 may be made of resin or metal.
  • the information acquisition device 18 is attached to the bracket 16.
  • a pair of claws 26, 26 are projected toward the inside of the vehicle on the two side portions 16A, 16A of the bracket 16 facing each other in the left-right direction, and between the claws 26, 26 facing each other in the left-right direction.
  • the information acquisition device 18 is attached to the bracket 16 via the claws 26, 26.
  • the photographing lens portion 28 of the information acquisition device 18 is directed from the opening 22 of the bracket 16 to the front of the vehicle through the opening 24 of the convex shielding layer 14A.
  • the mounting mode of the information acquisition device 18 to the bracket 16 is not limited to the fitting mode by the claw portion 26 described above, and may be, for example, an adhesive mode using an adhesive.
  • the CCD camera that captures the front is exemplified in the embodiment, but the present invention is not limited to this, and other sensors such as an infrared sensor that detects obstacles or a rain sensor that detects raindrops. It can also be applied to millimeter-wave radar. Further, the information acquisition device 18 may have two or more functions among the plurality of sensors and radars described above.
  • the cover 20 is attached to the bracket 16 on the indoor side of the vehicle window glass 12, and together with the bracket 16, forms a storage space (not shown) for accommodating the information acquisition device 18.
  • the cover 20 has an opening region composed of a plurality of through holes 30, 30 ... That communicate the accommodation space and the vehicle interior space.
  • the cover 20 may be made of resin or metal.
  • the cover 20 can be manufactured by injection molding or by a 3D printer. The above opening region will be described later.
  • FIG. 3 is a perspective view in which the cover 20 is attached to the bracket 16 on the indoor surface side of the vehicle window glass 12.
  • FIG. 4 is an unfolded view showing the cover 20 in order to explain the configuration of the cover 20.
  • the cover 20 of the embodiment is formed with an opening region 30A composed of a plurality of through holes 30, 30 ...
  • the opening region 30A is shown as a region surrounded by a two-dot chain line in FIG.
  • the window glass 10 for a vehicle with an information acquisition device provided with the cover 20 of the embodiment has a plurality of openings for heat dissipation and ventilation provided in the cover 20, unlike the cover disclosed in Patent Document 2-4.
  • the opening region 30A composed of the through holes 30, 30 ... the ratio of the total area occupied by the through holes is 30% or more of the area of the outer surface of the cover 20. Therefore, the air in the space surrounded by the cover 20 and the window glass 12 for the vehicle is unlikely to stay.
  • the ratio of the total area occupied by the through holes is more preferably 50% or more, and further preferably 80% or more of the area of the outer surface of the cover 20.
  • the outer surface of the cover 20 refers to an area that can be seen from the indoor side when the cover 20 is attached to the indoor surface side of the vehicle window glass 12.
  • the information acquisition device 18 normally continues to operate while the driver is driving the vehicle. Then, the information acquisition device 18 acquires information such as images inside and outside the vehicle, and continues to process the information. Therefore, as the information acquisition device 18 continues to operate, the information acquisition device 18 itself generates heat, and the temperature of the space surrounded by the cover 20 and the window glass 12 for the vehicle is raised. Further, since the information acquisition device 18 is attached to the bracket 16 fixed to the vehicle window glass 12, the temperature of the space surrounded by the cover 20 and the vehicle window glass 12 rises due to the sunlight from the outside of the vehicle. ..
  • the ratio of the total area occupied by the through holes in the opening area 30A formed in the cover 20 is 30% of the outer surface of the cover 20.
  • the air in the space surrounded by the cover 20 and the window glass 12 for the vehicle and the air in the indoor space can be easily exchanged with each other. That is, in the vehicle window glass 10 with the information acquisition device of the embodiment provided with the cover 20 of the embodiment, the environment (temperature, humidity, etc.) between the space surrounded by the cover 20 and the vehicle window glass 12 and the indoor space, etc. ) Becomes closer.
  • the fact that the environment (temperature, humidity, etc.) between the space surrounded by the cover 20 and the window glass 12 for the vehicle and the indoor space is close to each other means that the information acquisition device 18 is also a preferable environment for a human being as an occupant. It means that it is placed in an environment that is almost the same as the humidity and humidity. Therefore, the information acquisition device 18 is not easily affected by not only its own heat generation but also the temperature rise around the information acquisition device 18 due to sunlight from outside the vehicle.
  • the cover 20 of the embodiment includes two or more opening regions 30A composed of a plurality of through holes 30, 30 ...
  • the opening areas 30A act as air inlets and outlets between the space surrounded by the cover 20 and the vehicle window glass 12 and the interior, so that the cover 20 and the vehicle window glass are effectively provided.
  • the air in the space surrounded by 12 can be replaced.
  • the total area of the through holes in the two or more opening regions 30A, 30A ... Is preferably 30% or more, more preferably 50% or more, and more preferably 80% of the area of the outer surface of the cover 20. The above is more preferable.
  • the air in the space surrounded by the cover 20 and the window glass 12 for the vehicle can be replaced more effectively. It will be possible.
  • the cover 20 of the embodiment is provided with four or more opening regions 30A composed of a plurality of through holes 30, 30 ...
  • the cover 20 includes a main surface portion 20A facing the vehicle window glass 12, an upper side surface portion 20B, a lower side surface portion 20C, and a left side surface portion 20D formed around the main surface portion 20A. It has a right side surface portion 20E and.
  • the upper side surface portion 20B and the lower side surface portion 20C are each formed to be rectangular, and the main surface portion 20A, the left side surface portion 20D, and the right side surface portion 20E are each formed to be trapezoidal.
  • the range occupied by the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E in the entire cover 20 will be described.
  • the length T from the upper end A to the lower end B of the cover 20 in the vertical direction is approximately 20% of the length from the upper end A to the lower end B.
  • the range of is defined as the upper side surface portion 20B, and the range of approximately 15% of the length from the lower end B to the upper end A is defined as the lower side surface portion 20C.
  • the range corresponding to approximately 20% of the length of the upper end A side from the left end C to the right end D is defined as the left side surface portion 20D.
  • the range corresponding to approximately 20% of the length of the upper end A side from the right end D to the left end C is defined as the right side surface portion 20E.
  • the portion excluding the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E is defined as the main surface portion 20A.
  • the upper side surface portion 20B and the lower side surface portion 20C are rectangular, and the main surface portion 20A, the left side surface portion 20D, and the right side surface portion 20E are trapezoidal, but the shape of the cover is limited to the above shape. is not.
  • the shape of the cover varies, for example, as the cover disclosed in Patent Documents 1-4.
  • the cover 20 of the embodiment is provided with an opening region 30A on the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E, respectively. Since the cover 20 of the embodiment includes the opening area 30A on the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E, respectively, the cover 20 and the window glass for a vehicle are more effectively provided. The air in the space surrounded by the cover 20 can be replaced, and the heat dissipation and air permeability in the space surrounded by the cover 20 and the window glass 12 for the vehicle can be further improved.
  • the opening region 30A is formed over substantially the entire area of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E, but the present invention is limited to this. It's not something.
  • the opening region 30A may be formed on a part of each of the above-mentioned surface portions. In this case, it is preferable from the viewpoint of heat dissipation and air permeability that the area of the through hole in the opening region 30A occupies an area of 30% or more with respect to the area of the outer surface of each surface portion.
  • the through holes 30, 30 ... are preferably mesh holes (hereinafter, the "through holes 30" will be described as “mesh holes 30").
  • the mesh holes 30, 30 ... In the figure are square holes, but they may be round holes or may have irregular shapes. Further, the areas of the individual mesh holes 30, 30 ... May be the same or different.
  • the opening ratio of the mesh hole 30 of the embodiment is preferably 20% or more and 80% or less in an arbitrary 20 mm ⁇ 20 mm range in the opening region 30A. If the opening ratio of the mesh hole 30 is 20% or more in an arbitrary 20 mm ⁇ 20 mm range in the opening region 30A, the air exchange in the space surrounded by the cover 20 and the vehicle window glass 12 can be performed more effectively. It will be possible. If the opening ratio of the mesh hole 30 is 80% or less in an arbitrary 20 mm ⁇ 20 mm range in the opening area 30A, the bracket 16 or the information acquisition device 18 arranged in the cover 20 via the opening area 30A may be used. It becomes difficult to see and is preferable in appearance. Further, the rigidity of the opening region 30A of the cover 20 can be ensured, which is preferable.
  • the opening ratio ( ⁇ ) of the mesh holes is the shape of the lattice pattern of the mesh holes 30, 30 ... This is the resulting parameter.
  • This opening ratio ( ⁇ ) is as follows when the wire diameter of the mesh 31 of the mesh hole 30 is d and the pitch of the mesh hole 30 is L, as shown in the enlarged view of the main part of the opening region 30A shown in FIG. Calculated by the formula.
  • the wire diameter of the mesh 31 is preferably 0.5 mm or more and 2.0 mm or less.
  • the rigidity, heat dissipation, and breathability of the cover 20 can be suitably compatible with each other.
  • the cover 20 of the embodiment has heat dissipation and breathability, but also has an original function of hiding the information acquisition device 18 from the outside.
  • the axis P of the mesh hole 30 is the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the mesh hole 30. It is inclined with respect to the normal direction Q of the outer surface of the right side surface portion 20E.
  • the cover 20 when the cover 20 is viewed from the opposite direction R of the normal direction Q, the inside of the cover 20, that is, the accommodation space of the information acquisition device 18 becomes difficult to see due to the mesh 31 inclined with respect to the opposite direction R.
  • the cover 20 of the embodiment also has an original function of hiding the information acquisition device 18 from the outside.
  • the inclination angle of the axis P with respect to the normal direction Q increases, the visibility of the accommodation space decreases, but it may affect heat dissipation and air permeability. Therefore, it is preferable to set the above-mentioned inclination angle to an angle at which visibility, heat dissipation, and air permeability are compatible.
  • the axial center P of the mesh hole 30 shown in FIG. 6 is linear, but it may be bent or curved.
  • the cross-sectional shape of the mesh hole 30 may be a shape in which the cross-sectional area changes continuously or discontinuously from the outer surface to the inner surface of the cover 20.
  • the cover 20 shown in FIGS. 2 to 4 has an opening region 30A arranged in each of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E. It is not limited to. Hereinafter, another arrangement mode of the opening region 30A with respect to the cover 20 will be described.
  • the first other arrangement mode shown in FIG. 7 is a mode in which the opening region 30A is arranged on the main surface portion 20A and the lower side surface portion 20C.
  • this arrangement mode for example, the conditioned air from the defroster of the vehicle enters the accommodation space from the opening area 30A of the lower side surface portion 20C, and the high temperature air in the accommodation space enters the room from the opening area 30A of the main surface portion 20A. It is released. Further, when a downdraft is generated in the vehicle, the downdraft enters the accommodation space from the opening area 30A of the main surface portion 20A, and the high temperature air in the accommodation space enters the room from the opening area 30A of the lower side surface portion 20C. Is released to.
  • the opening region 30A may be provided on at least one of the main surface portion 20A and the lower side surface portion 20C. Even in this case, the rigidity of the cover 20 and the heat dissipation and breathability can be compatible with each other.
  • the second other arrangement mode shown in FIG. 8 is a mode in which the opening region 30A is arranged in the main surface portion 20A, the upper side surface portion 20B, and the lower side surface portion 20C.
  • the opening area 30A arranged in the upper side surface portion 20B is shown by an imaginary line.
  • the conditioned air from the defroster of the vehicle enters the accommodation space from the opening region 30A of the lower side surface portion 20C, and the high temperature air in the accommodation space enters the openings of the main surface portion 20A and the upper side surface portion 20B. It is discharged into the room from the regions 30A and 30A.
  • the downdraft in the vehicle enters the accommodation space from the opening area 30A of the upper side surface portion 20B, and the high temperature air in the accommodation space is discharged into the room from the opening areas 30A and 30A of the main surface portion 20A and the lower side surface portion 20C. ..
  • the size of the opening region 30B provided in the main surface portion 20A may be reduced by about 50% from the opening region 30A in FIG. .. Further, the size of the opening region 30A arranged in the upper side surface portion 20B and the lower side surface portion 20C may be reduced by about 50% as in the opening region 30B. In either case, the information acquisition device 18 can be effectively cooled, and the rigidity, heat dissipation, and air permeability of the cover 20 can be compatible with each other. Also in FIG. 9, the opening region 30A arranged in the upper side surface portion 20B is shown by an imaginary line.
  • the third other arrangement mode shown in FIG. 10 is a mode in which the opening region 30A is arranged in the upper side surface portion 20B and the lower side surface portion 20C.
  • the opening area 30A arranged in the upper side surface portion 20B is shown by an imaginary line.
  • this arrangement mode for example, the conditioned air from the defroster of the vehicle enters the accommodation space from the opening area 30A of the lower side surface portion 20C, and the high temperature air in the accommodation space enters the room from the opening area 30A of the upper side surface portion 20B. Is released to.
  • the downdraft in the vehicle enters the accommodation space from the opening region 30A of the upper side surface portion 20B, and the high temperature air in the accommodation space is discharged into the room from the opening region 30A of the lower side surface portion 20C.
  • the information acquisition device 18 can be effectively cooled, and the rigidity, heat dissipation, and air permeability of the cover 20 can be compatible with each other.
  • the fourth other arrangement mode shown in FIG. 11 is a mode in which the opening region 30A having the same area is arranged on the left side surface portion 20D and the right side surface portion 20E.
  • the opening region 30A arranged in the right side surface portion 20E is shown by an imaginary line.
  • this arrangement mode for example, when a horizontal airflow directed from left to right is generated in the vehicle, the airflow enters the accommodation space from the opening area 30A of the left side surface portion 20D, and the high temperature in the accommodation space. Air is discharged into the room from the opening region 30A of the right side surface portion 20E.
  • the airflow enters the accommodation space from the opening area 30A of the right side surface portion 20E, and the high temperature air in the accommodation space enters the opening of the left side surface portion 20D. It is discharged from the region 30A into the room.
  • the information acquisition device 18 can be effectively cooled, and the rigidity, heat dissipation, and air permeability of the cover 20 can be compatible with each other.
  • the opening region 30A may be provided on at least one of the left side surface portion 20D and the right side surface portion 20E. Even in this case, the rigidity of the cover 20 and the heat dissipation and breathability can be compatible with each other.
  • the opening area 30A is at least one of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E. It suffices if it is provided on the surface. Further, the opening area 30A may be provided on any two or more of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D and the right side surface portion 20E, and the opening area 30A may be provided on the main surface portion 20A.
  • the rigidity of the cover 20 can be compatible with heat dissipation and breathability.
  • the covers of Examples and Comparative Examples were as follows. In the cover of Example 1, the total area occupied by the through holes in the opening region was 30% of the area of the outer surface of the cover (hereinafter referred to as “mesh ratio 30%”). In the cover of Example 2, the total area occupied by the through holes in the opening region was 50% of the area of the outer surface of the cover (hereinafter referred to as “mesh ratio 50%”). In the cover of the comparative example, the total area occupied by the through holes in the opening region was 12% of the area of the outer surface of the cover (hereinafter referred to as “mesh ratio 12%”). The covers of Examples 1 and 2 and Comparative Examples were all made of ABS-based resin having the same thermal conductivity. The covers of Examples 1 and 2 and Comparative Examples were sequentially attached to brackets fixed to the windshield, and a test for confirming a decrease in the internal temperature of the cover, which will be described later, was carried out.
  • the test for confirming the decrease in the internal temperature of the cover was performed as follows.
  • STEP1 The cover was placed in the center of the upper side on the inner surface side of the windshield of the actual automobile. The car radiated an artificial sunlight from the outside of the car from a distance of 1 m from the windshield without running the engine. After that, the engine was run.
  • STEP2 By STEP1, the air conditioner in the vehicle was turned on after the temperature inside the vehicle became around 40 ° C. The air conditioner of the vehicle was set to a temperature of 25 ° C. and the air volume was set to 2 while the maximum setting was 7.
  • STEP3 Twenty minutes after STEP2 was performed, the temperature of the air conditioner in the vehicle interior was set to 20 ° C., and the air volume was set to 7, which is the maximum.
  • the temperature inside the vehicle and the temperature inside the cover were measured.
  • the vehicle interior surface temperature of the windshield, the internal temperature of the covers of Examples 1 and 2, and the internal temperature of the current product as a comparative example were measured.
  • Six artificial sun lamps manufactured by Iwasaki Electric Co., Ltd. (model number: metal halide artificial solar lamp 400W type) were lit. The amount of heat generated by the artificial sun lamp was 400 W.
  • the temperature inside the vehicle was measured in the vicinity of the rearview mirror of the vehicle while floating inside the vehicle so that the tip of the thermocouple would not touch anywhere.
  • the temperature of the inner surface of the windshield was measured by attaching a thermocouple to the inner surface of the car near the upper side of the windshield.
  • the internal temperature of the cover was measured by attaching a thermocouple to the surface of the in-vehicle camera located so as not to touch the cover.
  • Example 1 The measurement results of Example 1 and Comparative Example are shown in Table 1 below.
  • the vehicle interior surface temperature of the windshield was compared with the cover of Example 1 and Example 2 as a comparative example of the current product cover, the case without the cover, and the sealed cover without the through hole (mesh ratio 0%).
  • the temperature difference between the cover and the internal temperature of the cover is shown in FIG. In FIG. 12, the vertical axis indicates the temperature difference, that is, the value of (internal temperature of the cover)-(inside surface temperature of the windshield).
  • Example 1 As shown in Table 1 and FIG. 12, it can be seen that in Example 1, even with a cover having a mesh ratio of 30%, the internal temperature of the cover can be lowered by 10 ° C. after STEP 3 as compared with Comparative Example. .. Further, as shown in FIG. 12, in Example 2 (cover with a mesh ratio of 50%), it can be seen that the internal temperature of the cover can be lowered by nearly 10 ° C. after STEP 3 as compared with Comparative Example. Table 1 also shows the results of measuring the inside surface temperature of the windshield. The internal temperature of the cover varies according to changes in the weather, but the effect can be confirmed regardless of changes in the weather by observing the result of subtracting the internal surface temperature of the windshield from the internal temperature of the cover.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

Provided is a vehicle window with an information acquisition device which can achieve both heat dissipation and air permeability of a cover.　A vehicle window 10 with an information acquisition device is provided with a vehicle window 12, a bracket 16, an information acquisition device 18, and a cover 20. The cover 20 has an opening region 30A comprising a plurality of through holes 30 that communicate between an accommodation space and a vehicle interior space. In the opening region 30A, the ratio of the total area occupied by the through holes is greater than or equal to 30% of the area of the outer surface of the cover 20.

Description

情報取得デバイス付き車両用窓ガラスWindow glass for vehicles with information acquisition device
　本発明は、情報取得デバイス付き車両用窓ガラスに関する。 The present invention relates to a window glass for a vehicle with an information acquisition device.
　近年、運転者による運転を支援する目的で前方撮影カメラ、障害物検出センサ又は雨滴センサ等の情報取得デバイスが自動車の窓ガラスに装着されたものが普及してきている。 In recent years, information acquisition devices such as front-view cameras, obstacle detection sensors, and raindrop sensors mounted on the window glass of automobiles have become widespread for the purpose of assisting drivers in driving.
　このような情報取得デバイス付き車両用窓ガラスとして、特許文献１に開示された車両前方情報取得装置付きフロントガラスは、フロントガラスと、ブラケットと、車両前方情報取得センサと、カバーとを備えている。 As such a window glass for a vehicle with an information acquisition device, the windshield with a vehicle front information acquisition device disclosed in Patent Document 1 includes a windshield, a bracket, a vehicle front information acquisition sensor, and a cover. ..
　上記のブラケットは、フロントガラスの室内側の面に固定されており、このブラケットに車両前方情報取得センサが取り付けられる。また、上記のカバーは、ブラケットとの間で車両前方情報取得センサを収容するように凹状に湾曲した断面形状を有しており、フロントガラスの室内側にブラケットに取り付けられる。 The above bracket is fixed to the indoor surface of the windshield, and the vehicle front information acquisition sensor is attached to this bracket. Further, the cover has a cross-sectional shape curved in a concave shape so as to accommodate the vehicle front information acquisition sensor with the bracket, and is attached to the bracket on the indoor side of the windshield.
　特許文献２、３、４においても特許文献１と同様の情報取得デバイス付き車両用窓ガラスが開示されている。特許文献２－４に開示されたカバーには、スリットが備えられており、特に特許文献２では通気用として、特許文献４では放熱用としてスリットを備えることが記載されている。 Patent Documents 2, 3 and 4 also disclose vehicle windowpanes with an information acquisition device similar to Patent Document 1. The cover disclosed in Patent Document 2-4 is provided with a slit, and in particular, Patent Document 2 describes that the cover is provided with a slit, and Patent Document 4 describes that the cover is provided with a slit for heat dissipation.
特開２０１６－１４４９６６号公報JP-A-2016-144966 特開２０１３－１５１２９１号公報Japanese Unexamined Patent Publication No. 2013-151291 特開２０１６－１８７９８８号公報Japanese Unexamined Patent Publication No. 2016-187988 特開２０１８－１２４０６号公報JP-A-2018-12406
　窓ガラスに装着される情報取得デバイスは、自身の発熱又は日射による加熱によって昇温する。このため、カバーには、情報取得デバイスの過熱を抑制する目的でスリットが備えられている（特許文献２－４参照）。 The information acquisition device attached to the window glass raises the temperature due to its own heat generation or heating by solar radiation. Therefore, the cover is provided with a slit for the purpose of suppressing overheating of the information acquisition device (see Patent Document 2-4).
　しかしながら、特許文献２－４に開示されているカバーに形成されている開口領域が有するスリットとしての貫通孔が占める総面積の割合は、カバーの外表面の面積の１０％～２０％程度である。すなわち、従来のカバーは開口領域が十分ではないため、情報取得デバイス自身の発熱又は日射による加熱によって昇温した空気がカバーと窓ガラスにより囲われた空間に滞留してしまい、情報取得デバイスの動作に影響を及ぼす懸念があった。 However, the ratio of the total area occupied by the through holes as slits in the opening region formed in the cover disclosed in Patent Document 2-4 is about 10% to 20% of the area of the outer surface of the cover. .. That is, since the opening area of the conventional cover is not sufficient, the air heated by the heat generated by the information acquisition device itself or the heating by solar radiation stays in the space surrounded by the cover and the window glass, and the operation of the information acquisition device. There was a concern that it would affect.
　本発明は、このような事情に鑑みてなされたもので、カバーの放熱性と通気性とを両立できる情報取得デバイス付き車両用窓ガラスを提供することを目的とする。 The present invention has been made in view of such circumstances, and an object of the present invention is to provide a window glass for a vehicle with an information acquisition device that can achieve both heat dissipation and breathability of a cover.
　本発明の情報取得デバイス付き車両用窓ガラスは、本発明の目的を達成するために、車両用窓ガラスと、車両用窓ガラスの室内側の面に固定されたブラケットと、ブラケットに取り付けられる情報取得デバイスと、車両用窓ガラスの室内側にブラケットに取り付けられ、ブラケットと共に情報取得デバイスを収容する収容空間を形成するカバーと、を備えた情報取得デバイス付き車両用窓ガラスにおいて、カバーは、収容空間と車内空間とを連通する複数の貫通孔からなる開口領域を有しており、開口領域内の貫通孔が占める総面積の割合は、カバーの外表面の面積の３０％以上である。 The vehicle window glass with an information acquisition device of the present invention has a vehicle window glass, a bracket fixed to the indoor surface of the vehicle window glass, and information attached to the bracket in order to achieve the object of the present invention. In a vehicle windowpane with an information acquisition device comprising an acquisition device and a cover that is attached to a bracket on the interior side of the vehicle windowpane to form a storage space for accommodating the information acquisition device together with the bracket, the cover is accommodated. It has an opening area composed of a plurality of through holes that communicate the space and the interior space of the vehicle, and the ratio of the total area occupied by the through holes in the opening area is 30% or more of the area of the outer surface of the cover.
　本発明によれば、カバーの放熱性と通気性とを両立できる。 According to the present invention, both heat dissipation and breathability of the cover can be achieved.
本発明による実施形態の一つに係る情報取得デバイス付き車両用窓ガラスの全体斜視図である。It is an overall perspective view of the window glass for a vehicle with an information acquisition device which concerns on one of the Embodiments by this invention. 図１に示した情報取得デバイス付き車両用窓ガラスの組立斜視図である。It is an assembly perspective view of the window glass for a vehicle with an information acquisition device shown in FIG. 車両用窓ガラスの室内面側にカバーが取り付けられた斜視図である。It is a perspective view which attached the cover to the interior surface side of the window glass for a vehicle. カバーの展開図である。It is a development view of a cover. メッシュ孔の開口比を算出する方法の説明図である。It is explanatory drawing of the method of calculating the opening ratio of a mesh hole. メッシュ孔の軸心が面部の法線に対して傾斜したことを示した断面図である。It is sectional drawing which showed that the axis of the mesh hole was inclined with respect to the normal of the surface part. カバーに対する開口領域の第１の他の配置形態を示したカバーの斜視図である。It is a perspective view of the cover which showed the 1st other arrangement form of the opening area with respect to a cover. カバーに対する開口領域の第２の他の配置形態を示したカバーの斜視図である。It is a perspective view of the cover which showed the 2nd other arrangement form of the opening area with respect to a cover. 図８に示した配置態様の変形例を示したカバーの斜視図である。It is a perspective view of the cover which showed the modification of the arrangement mode shown in FIG. カバーに対する開口領域の第３の他の配置形態を示したカバーの斜視図である。It is a perspective view of the cover which showed the 3rd other arrangement form of the opening area with respect to a cover. カバーに対する開口領域の第４の他の配置形態を示したカバーの斜視図である。It is a perspective view of the cover which showed the 4th other arrangement form of the opening area with respect to a cover. 実施例及び比較例におけるカバー内部温度とフロントガラスの車内側表面温度との温度差を示すグラフである。It is a graph which shows the temperature difference between the cover internal temperature and the vehicle interior surface temperature of the windshield in Examples and Comparative Examples.
　以下、添付図面に従って本発明に係る情報取得デバイス付き車両用窓ガラスの好ましい実施形態について説明する。なお、以下の説明において、「上」、「下」、「前」、「後」、「左」、「右」の方向を示す用語は、車両の進行方向を「前」とした場合の方向を指す。 Hereinafter, a preferred embodiment of the window glass for a vehicle with an information acquisition device according to the present invention will be described with reference to the attached drawings. In the following description, the terms indicating the directions of "up", "down", "front", "rear", "left", and "right" are the directions when the traveling direction of the vehicle is "front". Point to.
　図１は、本発明の実施形態の一つに係る情報取得デバイス付き車両用窓ガラス１０を車内から見たときの全体斜視図である。図示の情報取得デバイス付き車両用窓ガラス１０は、略台形に構成されてフロントガラスに適用されるものであるが、本発明の情報取得デバイス付き車両用窓ガラスは、フロントガラス以外のリヤガラス等の他の車両用窓ガラスであっても適用できる。 FIG. 1 is an overall perspective view of a vehicle window glass 10 with an information acquisition device according to one of the embodiments of the present invention when viewed from the inside of the vehicle. The illustrated vehicle window glass 10 with an information acquisition device is configured to have a substantially trapezoidal shape and is applied to a windshield. However, the vehicle window glass with an information acquisition device of the present invention is a rear glass other than the windshield. It can also be applied to other vehicle windowpanes.
　実施形態の情報取得デバイス付き車両用窓ガラス１０が車体の前部開口部に取り付けられた場合、辺部１０Ａは上辺部、辺部１０Ｂは下辺部、辺部１０Ｃは左辺部、辺部１０Ｄは右辺部となる。また、情報取得デバイス付き車両用窓ガラス１０を構成する車両用窓ガラス１２は、その周辺部に、黒色セラミックスで形成される遮蔽層１４が備えられている。この遮蔽層１４は、黒セラ印刷用インクをガラス面に塗布し、これを焼き付けることにより形成される。この遮蔽層１４によって、車両用窓ガラス１２の周辺部に黒色不透明層が形成される。 When the window glass 10 for a vehicle with an information acquisition device of the embodiment is attached to the front opening of the vehicle body, the side portion 10A is the upper side portion, the side portion 10B is the lower side portion, the side portion 10C is the left side portion, and the side portion 10D is the side portion. It is on the right side. Further, the vehicle window glass 12 constituting the vehicle window glass 10 with an information acquisition device is provided with a shielding layer 14 made of black ceramics in the peripheral portion thereof. The shielding layer 14 is formed by applying black ceramic printing ink to a glass surface and baking it. The shielding layer 14 forms a black opaque layer around the vehicle window glass 12.
　図２は、図１に示した情報取得デバイス付き車両用窓ガラス１０の組立斜視図であり、要部を拡大して示している。 FIG. 2 is an assembled perspective view of the window glass 10 for a vehicle with an information acquisition device shown in FIG. 1, and the main part is enlarged.
　図２に示すように、情報取得デバイス付き車両用窓ガラス１０は、車両用窓ガラス１２（図１参照）と、ブラケット１６と、情報取得デバイス１８と、カバー２０とを備えている。 As shown in FIG. 2, the vehicle window glass 10 with an information acquisition device includes a vehicle window glass 12 (see FIG. 1), a bracket 16, an information acquisition device 18, and a cover 20.
　ブラケット１６は、車両用窓ガラス１２の室内側の面に固定される。このブラケット１６は、一例として、中央部に矩形の開口部２２を備える矩形の板状体であり、開口部２２が凸状遮蔽層１４Ａの開口部２４に重ねられた状態で不図示の接着剤により車両用窓ガラス１２に固定される。ブラケット１６が固定される凸状遮蔽層１４Ａは、図１に示すように、辺部１０Ａに沿った上部遮蔽層１４Ｂの左右方向における中央部に下に凸状に形成された部分である。この凸状遮蔽層１４Ａに不図示のルームミラーのステーが固定される場合には、ステーとカバー２０とが干渉しないように、ステーが貫通する貫通孔をカバー２０に備えることが好ましい。このブラケット１６は樹脂製であっても金属製であってもよい。 The bracket 16 is fixed to the indoor surface of the vehicle window glass 12. As an example, the bracket 16 is a rectangular plate-like body having a rectangular opening 22 at the center, and an adhesive (not shown) in a state where the opening 22 is overlapped with the opening 24 of the convex shielding layer 14A. Is fixed to the vehicle window glass 12. As shown in FIG. 1, the convex shielding layer 14A to which the bracket 16 is fixed is a portion formed downwardly in a central portion in the left-right direction of the upper shielding layer 14B along the side portion 10A. When the stay of the rearview mirror (not shown) is fixed to the convex shielding layer 14A, it is preferable that the cover 20 is provided with a through hole through which the stay penetrates so that the stay and the cover 20 do not interfere with each other. The bracket 16 may be made of resin or metal.
　図２に戻り、情報取得デバイス１８は、ブラケット１６に取り付けられる。ブラケット１６の左右方向に対向する２つの辺部１６Ａ、１６Ａには、それぞれ一対の爪部２６、２６が車内側に向けて突設されており、左右方向において対向する爪部２６、２６の間に情報取得デバイス１８を嵌合させることにより、情報取得デバイス１８が爪部２６、２６を介してブラケット１６に取り付けられる。このとき、情報取得デバイス１８の撮影レンズ部２８がブラケット１６の開口部２２から凸状遮蔽層１４Ａの開口部２４を介して車両の前方に向けられる。 Returning to FIG. 2, the information acquisition device 18 is attached to the bracket 16. A pair of claws 26, 26 are projected toward the inside of the vehicle on the two side portions 16A, 16A of the bracket 16 facing each other in the left-right direction, and between the claws 26, 26 facing each other in the left-right direction. By fitting the information acquisition device 18 to the bracket 16, the information acquisition device 18 is attached to the bracket 16 via the claws 26, 26. At this time, the photographing lens portion 28 of the information acquisition device 18 is directed from the opening 22 of the bracket 16 to the front of the vehicle through the opening 24 of the convex shielding layer 14A.
　ブラケット１６に対する情報取得デバイス１８の取り付け態様は、上記の爪部２６による嵌合態様に限定されるものではなく、例えば接着剤を使用した接着態様であってもよい。また、情報取得デバイス１８として、実施形態では前方を撮影するＣＣＤカメラを例示するが、これに限定されるものではなく、障害物検出する赤外線センサ、又は雨滴を検出するレインセンサ等の他のセンサや、ミリ波レーダーなどであっても適用できる。更に、情報取得デバイス１８は、上記の複数のセンサやレーダーのうち二つ以上の機能を備えたものであってもよい。 The mounting mode of the information acquisition device 18 to the bracket 16 is not limited to the fitting mode by the claw portion 26 described above, and may be, for example, an adhesive mode using an adhesive. Further, as the information acquisition device 18, the CCD camera that captures the front is exemplified in the embodiment, but the present invention is not limited to this, and other sensors such as an infrared sensor that detects obstacles or a rain sensor that detects raindrops. It can also be applied to millimeter-wave radar. Further, the information acquisition device 18 may have two or more functions among the plurality of sensors and radars described above.
　一方、カバー２０は、車両用窓ガラス１２の室内側にブラケット１６に取り付けられ、ブラケット１６と共に情報取得デバイス１８を収容する収容空間（不図示）を形成している。そして、カバー２０は、上記の収容空間と車内空間とを連通する複数の貫通孔３０、３０…からなる開口領域を有している。このカバー２０は樹脂製であっても金属製であってもよい。カバー２０は射出成形で製作できる他、３Ｄプリンタによっても製作できる。なお、上記の開口領域については後述する。 On the other hand, the cover 20 is attached to the bracket 16 on the indoor side of the vehicle window glass 12, and together with the bracket 16, forms a storage space (not shown) for accommodating the information acquisition device 18. The cover 20 has an opening region composed of a plurality of through holes 30, 30 ... That communicate the accommodation space and the vehicle interior space. The cover 20 may be made of resin or metal. The cover 20 can be manufactured by injection molding or by a 3D printer. The above opening region will be described later.
　図３は、カバー２０が車両用窓ガラス１２の室内面側でブラケット１６に取り付けられた斜視図である。図４は、カバー２０の構成を説明するためにカバー２０を展開して示した展開図である。 FIG. 3 is a perspective view in which the cover 20 is attached to the bracket 16 on the indoor surface side of the vehicle window glass 12. FIG. 4 is an unfolded view showing the cover 20 in order to explain the configuration of the cover 20.
　図４に示すように、実施形態のカバー２０には、複数の貫通孔３０、３０…からなる開口領域３０Ａが形成されている。なお、開口領域３０Ａは、図４において二点鎖線で囲まれた領域として示している。 As shown in FIG. 4, the cover 20 of the embodiment is formed with an opening region 30A composed of a plurality of through holes 30, 30 ... The opening region 30A is shown as a region surrounded by a two-dot chain line in FIG.
　実施形態のカバー２０を備えた情報取得デバイス付き車両用窓ガラス１０は、カバー２０に備えられる放熱用及び通気用の開口部が、特許文献２－４に開示されたカバーとは異なり、複数の貫通孔３０、３０…によって構成されている開口領域３０Ａにおいて、貫通孔が占める総面積の割合は、カバー２０の外表面の面積の３０％以上である。そのため、カバー２０と車両用窓ガラス１２により囲われた空間の空気が滞留しにくい。開口領域３０Ａにおいて、貫通孔が占める総面積の割合が、カバー２０の外表面の面積の５０％以上であることがより好ましく、８０％以上であることがさらに好ましい。なお、カバー２０の外表面とは、カバー２０が車両用窓ガラス１２の室内面側に取り付けられた場合において、室内側から視認可能な面積をさす。 The window glass 10 for a vehicle with an information acquisition device provided with the cover 20 of the embodiment has a plurality of openings for heat dissipation and ventilation provided in the cover 20, unlike the cover disclosed in Patent Document 2-4. In the opening region 30A composed of the through holes 30, 30 ..., the ratio of the total area occupied by the through holes is 30% or more of the area of the outer surface of the cover 20. Therefore, the air in the space surrounded by the cover 20 and the window glass 12 for the vehicle is unlikely to stay. In the opening region 30A, the ratio of the total area occupied by the through holes is more preferably 50% or more, and further preferably 80% or more of the area of the outer surface of the cover 20. The outer surface of the cover 20 refers to an area that can be seen from the indoor side when the cover 20 is attached to the indoor surface side of the vehicle window glass 12.
　情報取得デバイス１８は、通常運転手が車両を運転している間中動作し続ける。そして、情報取得デバイス１８は車内外の映像等の情報を取得し、情報を処理し続ける。したがって、情報取得デバイス１８は動作し続けることにより情報取得デバイス１８自身が発熱し、カバー２０と車両用窓ガラス１２により囲われた空間の温度を昇温させてしまう。また、情報取得デバイス１８は、車両用窓ガラス１２に固定されたブラケット１６に取り付けられるため、車外からの日射によりカバー２０と車両用窓ガラス１２により囲われた空間の温度が昇温してしまう。 The information acquisition device 18 normally continues to operate while the driver is driving the vehicle. Then, the information acquisition device 18 acquires information such as images inside and outside the vehicle, and continues to process the information. Therefore, as the information acquisition device 18 continues to operate, the information acquisition device 18 itself generates heat, and the temperature of the space surrounded by the cover 20 and the window glass 12 for the vehicle is raised. Further, since the information acquisition device 18 is attached to the bracket 16 fixed to the vehicle window glass 12, the temperature of the space surrounded by the cover 20 and the vehicle window glass 12 rises due to the sunlight from the outside of the vehicle. ..
　しかし、実施形態のカバー２０を備えた情報取得デバイス付き車両用窓ガラス１０において、カバー２０に形成された開口領域３０Ａにおいて、貫通孔が占める総面積の割合が、カバー２０の外表面の３０％以上であるため、カバー２０と車両用窓ガラス１２により囲われた空間内の空気と、室内の空間の空気とが入れ替わりやすくなる。すなわち、実施形態のカバー２０を備えた実施形態の情報取得デバイス付き車両用窓ガラス１０においては、カバー２０と車両用窓ガラス１２により囲われた空間と室内の空間との環境（温度、湿度など）が近くなる。 However, in the window glass 10 for a vehicle with an information acquisition device provided with the cover 20 of the embodiment, the ratio of the total area occupied by the through holes in the opening area 30A formed in the cover 20 is 30% of the outer surface of the cover 20. As described above, the air in the space surrounded by the cover 20 and the window glass 12 for the vehicle and the air in the indoor space can be easily exchanged with each other. That is, in the vehicle window glass 10 with the information acquisition device of the embodiment provided with the cover 20 of the embodiment, the environment (temperature, humidity, etc.) between the space surrounded by the cover 20 and the vehicle window glass 12 and the indoor space, etc. ) Becomes closer.
　つまり、カバー２０と車両用窓ガラス１２により囲われた空間と室内の空間との環境（温度、湿度など）が近いということは、情報取得デバイス１８も、乗員である人間にとって好ましい環境である温度や湿度とほぼ同等の環境下に置かれることを意味する。したがって、情報取得デバイス１８が、それ自身の発熱のみならず、車外からの太陽光などによる情報取得デバイス１８周囲の昇温の影響を受けにくい。 That is, the fact that the environment (temperature, humidity, etc.) between the space surrounded by the cover 20 and the window glass 12 for the vehicle and the indoor space is close to each other means that the information acquisition device 18 is also a preferable environment for a human being as an occupant. It means that it is placed in an environment that is almost the same as the humidity and humidity. Therefore, the information acquisition device 18 is not easily affected by not only its own heat generation but also the temperature rise around the information acquisition device 18 due to sunlight from outside the vehicle.
　実施形態のカバー２０は、複数の貫通孔３０、３０…によって構成されている開口領域３０Ａは、２箇所以上備えていることが好ましい。開口領域３０Ａが２箇所以上備えていると、カバー２０と車両用窓ガラス１２により囲われた空間と室内との空気の入口と出口の役割を果たすため、効果的にカバー２０と車両用窓ガラス１２により囲われた空間の空気の入れ替えが可能になる。なお、２箇所以上の開口領域３０Ａ、３０Ａ…における貫通孔の面積の総和が、カバー２０の外表面の面積の３０％以上であることが好ましく、５０％以上であることがより好ましく、８０％以上であることがさらに好ましい。 It is preferable that the cover 20 of the embodiment includes two or more opening regions 30A composed of a plurality of through holes 30, 30 ... When the opening areas 30A are provided at two or more locations, they act as air inlets and outlets between the space surrounded by the cover 20 and the vehicle window glass 12 and the interior, so that the cover 20 and the vehicle window glass are effectively provided. The air in the space surrounded by 12 can be replaced. The total area of the through holes in the two or more opening regions 30A, 30A ... Is preferably 30% or more, more preferably 50% or more, and more preferably 80% of the area of the outer surface of the cover 20. The above is more preferable.
　また、実施形態のカバー２０の２箇所の開口領域３０Ａ、３０Ａにおける貫通孔の総面積が同じであれば、より効果的にカバー２０と車両用窓ガラス１２により囲われた空間の空気の入れ替えが可能になる。 Further, if the total areas of the through holes in the two opening regions 30A and 30A of the cover 20 of the embodiment are the same, the air in the space surrounded by the cover 20 and the window glass 12 for the vehicle can be replaced more effectively. It will be possible.
　さらに、実施形態のカバー２０は、複数の貫通孔３０、３０…によって構成されている開口領域３０Ａが４箇所以上備えていることが好ましい。 Further, it is preferable that the cover 20 of the embodiment is provided with four or more opening regions 30A composed of a plurality of through holes 30, 30 ...
　ここで、カバー２０の一例について図３及び図４を参照して説明する。これらの図に示すように、カバー２０は、車両用窓ガラス１２に正対する主面部２０Ａと、主面部２０Ａの周囲に折曲形成された上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅと、を有している。そして、上側面部２０Ｂ及び下側面部２０Ｃはそれぞれ矩形に構成され、主面部２０Ａ、左側面部２０Ｄ及び右側面部２０Ｅはそれぞれ台形に構成されている。 Here, an example of the cover 20 will be described with reference to FIGS. 3 and 4. As shown in these figures, the cover 20 includes a main surface portion 20A facing the vehicle window glass 12, an upper side surface portion 20B, a lower side surface portion 20C, and a left side surface portion 20D formed around the main surface portion 20A. It has a right side surface portion 20E and. The upper side surface portion 20B and the lower side surface portion 20C are each formed to be rectangular, and the main surface portion 20A, the left side surface portion 20D, and the right side surface portion 20E are each formed to be trapezoidal.
　ここで、カバー２０全体において、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅが占める範囲の一例を説明する。例えば、図４に示すようにカバー２０を正面視した場合、カバー２０の上端Ａから下端Ｂまでの上下方向の最大長さＴのうち、上端Ａから下端Ｂに向けた略２０％の長さの範囲を上側面部２０Ｂと規定し、下端Ｂから上端Ａに向けた略１５％の長さの範囲を下側面部２０Ｃと規定する。また、カバー２０の左端Ｃから右端Ｄまでの左右方向の最大長さＷのうち、左端Ｃから右端Ｄに向けた上端Ａ側の略２０％の長さに相当する範囲を左側面部２０Ｄと規定し、右端Ｄから左端Ｃに向けた上端Ａ側の略２０％の長さに相当する範囲を右側面部２０Ｅと規定する。そして、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅを除いた部分を主面部２０Ａとして規定する。 Here, an example of the range occupied by the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E in the entire cover 20 will be described. For example, when the cover 20 is viewed from the front as shown in FIG. 4, the length T from the upper end A to the lower end B of the cover 20 in the vertical direction is approximately 20% of the length from the upper end A to the lower end B. The range of is defined as the upper side surface portion 20B, and the range of approximately 15% of the length from the lower end B to the upper end A is defined as the lower side surface portion 20C. Further, of the maximum length W in the left-right direction from the left end C to the right end D of the cover 20, the range corresponding to approximately 20% of the length of the upper end A side from the left end C to the right end D is defined as the left side surface portion 20D. The range corresponding to approximately 20% of the length of the upper end A side from the right end D to the left end C is defined as the right side surface portion 20E. Then, the portion excluding the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E is defined as the main surface portion 20A.
　実施形態のカバー２０は、上側面部２０Ｂ及び下側面部２０Ｃが矩形であり、主面部２０Ａ、左側面部２０Ｄ及び右側面部２０Ｅが台形であるが、カバーの形状は上記の形状に限定されるものではない。カバーの形状は、例えば特許文献１－４に開示されたカバーのように様々である。 In the cover 20 of the embodiment, the upper side surface portion 20B and the lower side surface portion 20C are rectangular, and the main surface portion 20A, the left side surface portion 20D, and the right side surface portion 20E are trapezoidal, but the shape of the cover is limited to the above shape. is not. The shape of the cover varies, for example, as the cover disclosed in Patent Documents 1-4.
　実施形態のカバー２０は、開口領域３０Ａを主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅにそれぞれ備えていることが好ましい。実施形態のカバー２０が、開口領域３０Ａを主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅにそれぞれ備えているので、より効果的にカバー２０と車両用窓ガラス１２により囲われた空間の空気の入れ替えが可能になり、カバー２０と車両用窓ガラス１２により囲われた空間内の放熱性及び通気性をより一層高めることができる。 It is preferable that the cover 20 of the embodiment is provided with an opening region 30A on the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E, respectively. Since the cover 20 of the embodiment includes the opening area 30A on the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E, respectively, the cover 20 and the window glass for a vehicle are more effectively provided. The air in the space surrounded by the cover 20 can be replaced, and the heat dissipation and air permeability in the space surrounded by the cover 20 and the window glass 12 for the vehicle can be further improved.
　なお、実施形態のカバー２０は、主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅの略全域に亘って開口領域３０Ａが形成されているが、これに限定されるものではない。例えば、上記の各面部の一部に開口領域３０Ａを形成してもよい。この場合、各面部の外表面の面積に対して３０％以上の面積を開口領域３０Ａにおける貫通孔の面積の挿話が占めることが放熱性及び通気性の観点で好ましい。 In the cover 20 of the embodiment, the opening region 30A is formed over substantially the entire area of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E, but the present invention is limited to this. It's not something. For example, the opening region 30A may be formed on a part of each of the above-mentioned surface portions. In this case, it is preferable from the viewpoint of heat dissipation and air permeability that the area of the through hole in the opening region 30A occupies an area of 30% or more with respect to the area of the outer surface of each surface portion.
　実施形態のカバー２０において、貫通孔３０、３０…はメッシュ孔であることが好ましい（以下、「貫通孔３０」を「メッシュ孔３０」として説明する。）。図中のメッシュ孔３０、３０…は角孔であるが、丸孔であってもよいし、孔の形状が異形であってもよい。また、個々のメッシュ孔３０、３０…の面積は同じであってもよいし、異なっていてもよい。 In the cover 20 of the embodiment, the through holes 30, 30 ... Are preferably mesh holes (hereinafter, the "through holes 30" will be described as "mesh holes 30"). The mesh holes 30, 30 ... In the figure are square holes, but they may be round holes or may have irregular shapes. Further, the areas of the individual mesh holes 30, 30 ... May be the same or different.
　一方、実施形態のメッシュ孔３０の開口比は、開口領域３０Ａにおける任意の２０ｍｍ×２０ｍｍの範囲において、２０％以上８０％以下であることが好ましい。メッシュ孔３０の開口比が、開口領域３０Ａにおける任意の２０ｍｍ×２０ｍｍの範囲において、２０％以上であれば、より効果的にカバー２０と車両用窓ガラス１２により囲われた空間の空気の入れ替えが可能になる。メッシュ孔３０の開口比が、開口領域３０Ａにおける任意の２０ｍｍ×２０ｍｍの範囲において、８０％以下であれば、開口領域３０Ａを介してカバー２０内に配置されるブラケット１６や情報取得デバイス１８などを視認しにくくなり、外観上好ましい。さらに、カバー２０の開口領域３０Ａの剛性も担保できるため、好ましい。 On the other hand, the opening ratio of the mesh hole 30 of the embodiment is preferably 20% or more and 80% or less in an arbitrary 20 mm × 20 mm range in the opening region 30A. If the opening ratio of the mesh hole 30 is 20% or more in an arbitrary 20 mm × 20 mm range in the opening region 30A, the air exchange in the space surrounded by the cover 20 and the vehicle window glass 12 can be performed more effectively. It will be possible. If the opening ratio of the mesh hole 30 is 80% or less in an arbitrary 20 mm × 20 mm range in the opening area 30A, the bracket 16 or the information acquisition device 18 arranged in the cover 20 via the opening area 30A may be used. It becomes difficult to see and is preferable in appearance. Further, the rigidity of the opening region 30A of the cover 20 can be ensured, which is preferable.
　なお、図５に示すように、開口領域３０Ａの貫通孔３０、３０…が網状のメッシュ孔である場合、メッシュ孔の開口比（β）は、メッシュ孔３０、３０…の格子パターンの形状に起因するパラメータである。この開口比（β）は、図５に示す開口領域３０Ａの要部拡大図に示すように、メッシュ孔３０のメッシュ３１の線径をｄ、メッシュ孔３０のピッチをＬとした場合、下記の式により算出される。 As shown in FIG. 5, when the through holes 30, 30 ... In the opening region 30A are mesh holes, the opening ratio (β) of the mesh holes is the shape of the lattice pattern of the mesh holes 30, 30 ... This is the resulting parameter. This opening ratio (β) is as follows when the wire diameter of the mesh 31 of the mesh hole 30 is d and the pitch of the mesh hole 30 is L, as shown in the enlarged view of the main part of the opening region 30A shown in FIG. Calculated by the formula.
　［数１］
　β＝（１－ｄ／Ｌ）２
　開口領域３０Ａの貫通孔３０、３０…が網状のメッシュ孔である場合、メッシュ３１の線径を０．５ｍｍ以上２．０ｍｍ以下とすることが好ましい。メッシュ３１の線径を０．５ｍｍ以上２．０ｍｍ以下であれば、カバー２０の剛性と放熱性及び通気性とを好適に両立できる。 [Number 1]
β = (1-d / L) 2
When the through holes 30, 30 ... In the opening region 30A are mesh holes, the wire diameter of the mesh 31 is preferably 0.5 mm or more and 2.0 mm or less. When the wire diameter of the mesh 31 is 0.5 mm or more and 2.0 mm or less, the rigidity, heat dissipation, and breathability of the cover 20 can be suitably compatible with each other.
　上記の通り、実施形態のカバー２０は、放熱性と通気性とを備えているが、情報取得デバイス１８を外部から隠すという本来的な機能も備えている。 As described above, the cover 20 of the embodiment has heat dissipation and breathability, but also has an original function of hiding the information acquisition device 18 from the outside.
　すなわち、実施形態のカバー２０は、図６に示すメッシュ孔３０の断面図の如く、メッシュ孔３０は、その軸心Ｐが主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅの外表面の法線方向Ｑに対して傾斜されている。 That is, in the cover 20 of the embodiment, as shown in the cross-sectional view of the mesh hole 30 shown in FIG. 6, the axis P of the mesh hole 30 is the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the mesh hole 30. It is inclined with respect to the normal direction Q of the outer surface of the right side surface portion 20E.
　そうすると、法線方向Ｑの反対方向Ｒからカバー２０を見た場合、反対方向Ｒに対して傾斜したメッシュ３１によりカバー２０の内部、つまり情報取得デバイス１８の収容空間が見え難くなる。これにより、実施形態のカバー２０によれば、情報取得デバイス１８を外部から隠すという本来的な機能も備えている。なお、法線方向Ｑに対する軸心Ｐの傾斜角度が大きくなるに従って収容空間の視認性は低下するが、放熱性及び通気性に影響を与える場合がある。よって、上記の傾斜角度は、視認性と放熱性及び通気性とが両立する角度に設定することが好ましい。なお、図６に示すメッシュ孔３０の軸心Ｐは直線状であるが、屈曲していてもよいし、曲線状であってもよい。また、メッシュ孔３０の断面形状は、カバー２０の外表面から内表面に向かって断面積が連続的、もしくは非連続的に変化する形状であってもよい。 Then, when the cover 20 is viewed from the opposite direction R of the normal direction Q, the inside of the cover 20, that is, the accommodation space of the information acquisition device 18 becomes difficult to see due to the mesh 31 inclined with respect to the opposite direction R. As a result, according to the cover 20 of the embodiment, it also has an original function of hiding the information acquisition device 18 from the outside. As the inclination angle of the axis P with respect to the normal direction Q increases, the visibility of the accommodation space decreases, but it may affect heat dissipation and air permeability. Therefore, it is preferable to set the above-mentioned inclination angle to an angle at which visibility, heat dissipation, and air permeability are compatible. The axial center P of the mesh hole 30 shown in FIG. 6 is linear, but it may be bent or curved. Further, the cross-sectional shape of the mesh hole 30 may be a shape in which the cross-sectional area changes continuously or discontinuously from the outer surface to the inner surface of the cover 20.
　図２から図４で示したカバー２０は、主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅのそれぞれに開口領域３０Ａを配置した態様であるが、この配置態様に限定されるものではない。以下、カバー２０に対する開口領域３０Ａの他の配置態様について説明する。 The cover 20 shown in FIGS. 2 to 4 has an opening region 30A arranged in each of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E. It is not limited to. Hereinafter, another arrangement mode of the opening region 30A with respect to the cover 20 will be described.
　図７に示す第１の他の配置態様は、主面部２０Ａと下側面部２０Ｃとに開口領域３０Ａが配置された態様である。この配置態様によれば、例えば、車両のデフロスターからの空調空気が下側面部２０Ｃの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が主面部２０Ａの開口領域３０Ａから室内に放出される。また、車内に下降気流が生じている場合には、その下降気流が主面部２０Ａの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が下側面部２０Ｃの開口領域３０Ａから室内に放出される。いずれの場合も情報取得デバイス１８を効果的に冷却できる。なお、開口領域３０Ａは、主面部２０Ａ及び下側面部２０Ｃの少なくとも一方の面部に備えられていればよい。この場合でも、カバー２０の剛性と放熱性及び通気性とを両立できる。 The first other arrangement mode shown in FIG. 7 is a mode in which the opening region 30A is arranged on the main surface portion 20A and the lower side surface portion 20C. According to this arrangement mode, for example, the conditioned air from the defroster of the vehicle enters the accommodation space from the opening area 30A of the lower side surface portion 20C, and the high temperature air in the accommodation space enters the room from the opening area 30A of the main surface portion 20A. It is released. Further, when a downdraft is generated in the vehicle, the downdraft enters the accommodation space from the opening area 30A of the main surface portion 20A, and the high temperature air in the accommodation space enters the room from the opening area 30A of the lower side surface portion 20C. Is released to. In either case, the information acquisition device 18 can be effectively cooled. The opening region 30A may be provided on at least one of the main surface portion 20A and the lower side surface portion 20C. Even in this case, the rigidity of the cover 20 and the heat dissipation and breathability can be compatible with each other.
　図８に示す第２の他の配置態様は、主面部２０Ａと上側面部２０Ｂと下側面部２０Ｃとに開口領域３０Ａが配置された態様である。上側面部２０Ｂに配置される開口領域３０Ａは、想像線で示してある。この配置態様によれば、例えば、車両のデフロスターからの空調空気が下側面部２０Ｃの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が主面部２０Ａと上側面部２０Ｂの開口領域３０Ａ、３０Ａから室内に放出される。また、車内の下降気流が上側面部２０Ｂの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が主面部２０Ａと下側面部２０Ｃの開口領域３０Ａ、３０Ａから室内に放出される。 The second other arrangement mode shown in FIG. 8 is a mode in which the opening region 30A is arranged in the main surface portion 20A, the upper side surface portion 20B, and the lower side surface portion 20C. The opening area 30A arranged in the upper side surface portion 20B is shown by an imaginary line. According to this arrangement mode, for example, the conditioned air from the defroster of the vehicle enters the accommodation space from the opening region 30A of the lower side surface portion 20C, and the high temperature air in the accommodation space enters the openings of the main surface portion 20A and the upper side surface portion 20B. It is discharged into the room from the regions 30A and 30A. Further, the downdraft in the vehicle enters the accommodation space from the opening area 30A of the upper side surface portion 20B, and the high temperature air in the accommodation space is discharged into the room from the opening areas 30A and 30A of the main surface portion 20A and the lower side surface portion 20C. ..
　なお、図８に示した配置態様の変形例として、図９に示すように、主面部２０Ａに備えられる開口領域３０Ｂの大きさを図８の開口領域３０Ａよりも５０％程度小さくしてもよい。また、上側面部２０Ｂ及び下側面部２０Ｃに配置される開口領域３０Ａの大きさも開口領域３０Ｂと同様に５０％程度小さくしてもよい。いずれの場合も情報取得デバイス１８を効果的に冷却でき、且つカバー２０の剛性と放熱性及び通気性とを両立できる。図９においても、上側面部２０Ｂに配置される開口領域３０Ａは、想像線で示してある。 As a modification of the arrangement mode shown in FIG. 8, as shown in FIG. 9, the size of the opening region 30B provided in the main surface portion 20A may be reduced by about 50% from the opening region 30A in FIG. .. Further, the size of the opening region 30A arranged in the upper side surface portion 20B and the lower side surface portion 20C may be reduced by about 50% as in the opening region 30B. In either case, the information acquisition device 18 can be effectively cooled, and the rigidity, heat dissipation, and air permeability of the cover 20 can be compatible with each other. Also in FIG. 9, the opening region 30A arranged in the upper side surface portion 20B is shown by an imaginary line.
　図１０に示す第３の他の配置態様は、上側面部２０Ｂと下側面部２０Ｃとに開口領域３０Ａが配置された態様である。上側面部２０Ｂに配置される開口領域３０Ａは、想像線で示してある。この配置態様によれば、例えば、車両のデフロスターからの空調空気が下側面部２０Ｃの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が上側面部２０Ｂの開口領域３０Ａから室内に放出される。また、車内の下降気流が上側面部２０Ｂの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が下側面部２０Ｃの開口領域３０Ａから室内に放出される。いずれの場合も情報取得デバイス１８を効果的に冷却でき、且つカバー２０の剛性と放熱性及び通気性とを両立できる。 The third other arrangement mode shown in FIG. 10 is a mode in which the opening region 30A is arranged in the upper side surface portion 20B and the lower side surface portion 20C. The opening area 30A arranged in the upper side surface portion 20B is shown by an imaginary line. According to this arrangement mode, for example, the conditioned air from the defroster of the vehicle enters the accommodation space from the opening area 30A of the lower side surface portion 20C, and the high temperature air in the accommodation space enters the room from the opening area 30A of the upper side surface portion 20B. Is released to. Further, the downdraft in the vehicle enters the accommodation space from the opening region 30A of the upper side surface portion 20B, and the high temperature air in the accommodation space is discharged into the room from the opening region 30A of the lower side surface portion 20C. In either case, the information acquisition device 18 can be effectively cooled, and the rigidity, heat dissipation, and air permeability of the cover 20 can be compatible with each other.
　図１１に示す第４の他の配置態様は、左側面部２０Ｄと右側面部２０Ｅとに面積が等しい開口領域３０Ａが配置された態様である。右側面部２０Ｅに配置される開口領域３０Ａは、想像線で示してある。この配置態様によれば、例えば、車内に左から右に向いた水平気流が生じている場合には、その気流が左側面部２０Ｄの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が右側面部２０Ｅの開口領域３０Ａから室内に放出される。また、車内に右から左に向いた水平気流が生じている場合には、その気流が右側面部２０Ｅの開口領域３０Ａから収容空間に入り込み、そして、収容空間内の高温空気が左側面部２０Ｄの開口領域３０Ａから室内に放出される。いずれの場合も情報取得デバイス１８を効果的に冷却でき、且つカバー２０の剛性と放熱性及び通気性とを両立できる。なお、開口領域３０Ａは、左側面部２０Ｄ及び右側面部２０Ｅの少なくとも一方の面部に備えられていればよい。この場合でも、カバー２０の剛性と放熱性及び通気性とを両立できる。 The fourth other arrangement mode shown in FIG. 11 is a mode in which the opening region 30A having the same area is arranged on the left side surface portion 20D and the right side surface portion 20E. The opening region 30A arranged in the right side surface portion 20E is shown by an imaginary line. According to this arrangement mode, for example, when a horizontal airflow directed from left to right is generated in the vehicle, the airflow enters the accommodation space from the opening area 30A of the left side surface portion 20D, and the high temperature in the accommodation space. Air is discharged into the room from the opening region 30A of the right side surface portion 20E. Further, when a horizontal airflow directed from right to left is generated in the vehicle, the airflow enters the accommodation space from the opening area 30A of the right side surface portion 20E, and the high temperature air in the accommodation space enters the opening of the left side surface portion 20D. It is discharged from the region 30A into the room. In either case, the information acquisition device 18 can be effectively cooled, and the rigidity, heat dissipation, and air permeability of the cover 20 can be compatible with each other. The opening region 30A may be provided on at least one of the left side surface portion 20D and the right side surface portion 20E. Even in this case, the rigidity of the cover 20 and the heat dissipation and breathability can be compatible with each other.
　上記のようにカバー２０に対する開口領域３０Ａの配置態様は様々であるが、開口領域３０Ａは、主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅのうち少なくとも１つの面部に備えられていればよい。また、開口領域３０Ａは、主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅのいずれか２以上面部に備えていてもよく、開口領域３０Ａは、主面部２０Ａ、上側面部２０Ｂ、下側面部２０Ｃ、左側面部２０Ｄ及び右側面部２０Ｅの全ての面に備えていてもよい。これにより、カバー２０の剛性と放熱性及び通気性とを両立できる。 As described above, the arrangement of the opening area 30A with respect to the cover 20 is various, but the opening area 30A is at least one of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E. It suffices if it is provided on the surface. Further, the opening area 30A may be provided on any two or more of the main surface portion 20A, the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D and the right side surface portion 20E, and the opening area 30A may be provided on the main surface portion 20A. It may be provided on all surfaces of the upper side surface portion 20B, the lower side surface portion 20C, the left side surface portion 20D, and the right side surface portion 20E. As a result, the rigidity of the cover 20 can be compatible with heat dissipation and breathability.
　以下、本発明を適用したカバーの実施例１及び２について、現行品のカバー（比較例）と比較しながら、本発明の効果を実施例に基づいて具体的に説明する。 Hereinafter, the effects of the present invention will be specifically described with reference to Examples 1 and 2 of the cover to which the present invention is applied, while comparing with the cover (comparative example) of the current product.
　実施例及び比較例のカバーは、次の通りであった。
　実施例１のカバーは、開口領域において貫通孔が占める総面積が、カバーの外表面の面積の３０％（以下「メッシュ率３０％」という）であった。実施例２のカバーは、開口領域において貫通孔が占める総面積が、カバーの外表面の面積の５０％（以下「メッシュ率５０％」という）であった。比較例のカバーは、開口領域において貫通孔が占める総面積が、カバーの外表面の面積の１２％（以下「メッシュ率１２％」という）であった。実施例１及び２並びに比較例のカバーは、いずれも、熱伝導率を同じくするＡＢＳ系の樹脂製であった。実施例１及び２並びに比較例のカバーは、フロントガラスに固定したブラケットに順次取り付けて、後述するカバーの内部温度の低下確認試験を実施した。 The covers of Examples and Comparative Examples were as follows.
In the cover of Example 1, the total area occupied by the through holes in the opening region was 30% of the area of the outer surface of the cover (hereinafter referred to as “mesh ratio 30%”). In the cover of Example 2, the total area occupied by the through holes in the opening region was 50% of the area of the outer surface of the cover (hereinafter referred to as “mesh ratio 50%”). In the cover of the comparative example, the total area occupied by the through holes in the opening region was 12% of the area of the outer surface of the cover (hereinafter referred to as “mesh ratio 12%”). The covers of Examples 1 and 2 and Comparative Examples were all made of ABS-based resin having the same thermal conductivity. The covers of Examples 1 and 2 and Comparative Examples were sequentially attached to brackets fixed to the windshield, and a test for confirming a decrease in the internal temperature of the cover, which will be described later, was carried out.
　カバーの内部温度の低下確認試験は、下記のようにして行った。
　ＳＴＥＰ１：実際の自動車のフロントガラスの車内面側で上辺中央にカバーを配置した。自動車は、エンジンを稼働させない状態で、フロントガラスから１ｍ離れた距離より、人工太陽灯を車外から照射した。その後、エンジンを稼働させた。
　ＳＴＥＰ２：ＳＴＥＰ１により、車室内の温度が４０℃付近になってから、車両内のエアコンをＯＮにした。車両のエアコン設定は、温度が２５℃で、風量は、最大設定が７に対し、２の設定にした。
　ＳＴＥＰ３：ＳＴＥＰ２を実施後２０分経過してから、車室内のエアコンの温度を２０℃に設定し、風量を最大である７に設定した。車室内の温度が２０℃となってから、フロントガラスの車内側表面温度及びカバーの内部温度を測定した。
　フロントガラスの車内側表面温度、実施例１及び２のカバーの内部温度、比較例としての現行品の内部温度を測定した。人工太陽灯は、岩崎電気社製（型番：メタルハライド人工太陽灯４００Ｗタイプ）のものを６灯点灯させた。人工太陽灯の発生熱量は、４００Ｗであった。
　車室内の温度は、自動車のルームミラー付近において、熱電対の先端がどこにも触れないよう、車室内に浮かせた状態で温度を測定した。フロントガラスの車内側表面温度は、フロントガラスの上辺部近傍の車内面側に熱電対を取り付けて温度を測定した。カバーの内部温度は、カバーに触れない位置に配置されている車載カメラの表面に熱電対を取り付けて温度を測定した。 The test for confirming the decrease in the internal temperature of the cover was performed as follows.
STEP1: The cover was placed in the center of the upper side on the inner surface side of the windshield of the actual automobile. The car radiated an artificial sunlight from the outside of the car from a distance of 1 m from the windshield without running the engine. After that, the engine was run.
STEP2: By STEP1, the air conditioner in the vehicle was turned on after the temperature inside the vehicle became around 40 ° C. The air conditioner of the vehicle was set to a temperature of 25 ° C. and the air volume was set to 2 while the maximum setting was 7.
STEP3: Twenty minutes after STEP2 was performed, the temperature of the air conditioner in the vehicle interior was set to 20 ° C., and the air volume was set to 7, which is the maximum. After the temperature inside the vehicle reached 20 ° C., the temperature inside the vehicle and the temperature inside the cover were measured.
The vehicle interior surface temperature of the windshield, the internal temperature of the covers of Examples 1 and 2, and the internal temperature of the current product as a comparative example were measured. Six artificial sun lamps manufactured by Iwasaki Electric Co., Ltd. (model number: metal halide artificial solar lamp 400W type) were lit. The amount of heat generated by the artificial sun lamp was 400 W.
The temperature inside the vehicle was measured in the vicinity of the rearview mirror of the vehicle while floating inside the vehicle so that the tip of the thermocouple would not touch anywhere. The temperature of the inner surface of the windshield was measured by attaching a thermocouple to the inner surface of the car near the upper side of the windshield. The internal temperature of the cover was measured by attaching a thermocouple to the surface of the in-vehicle camera located so as not to touch the cover.
　実施例１及び比較例の測定結果を、下記表１に示す。 The measurement results of Example 1 and Comparative Example are shown in Table 1 below.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　実施例１及び実施例２のカバーを、比較例としての現行品カバー、カバー無しの場合及び貫通孔が形成されていない密封カバー（メッシュ率０％）と比較した、フロントガラスの車内側表面温度とカバーの内部温度と間の温度差をグラフに示すと、図１２の通りである。図１２において、縦軸は、温度差、すなわち（カバーの内部温度）－（フロントガラスの車内側表面温度）の値を示す。 The vehicle interior surface temperature of the windshield was compared with the cover of Example 1 and Example 2 as a comparative example of the current product cover, the case without the cover, and the sealed cover without the through hole (mesh ratio 0%). The temperature difference between the cover and the internal temperature of the cover is shown in FIG. In FIG. 12, the vertical axis indicates the temperature difference, that is, the value of (internal temperature of the cover)-(inside surface temperature of the windshield).
　上記表１及び図１２に示されるように、実施例１は、メッシュ率３０％のカバーでも、カバーの内部温度を、比較例に比べて、ＳＴＥＰ３実施後は、１０℃下げることができることが分かる。また、図１２に示すように、実施例２（メッシュ率５０％のカバー）では、カバーの内部温度を、比較例に比べて、ＳＴＥＰ３実施後は、１０℃近く下げることができることが分かる。
　表１には、フロントガラスの車内側表面温度について測定した結果も示してある。天候の変化に応じてカバーの内部温度がばらつくが、カバーの内部温度からフロントガラスの車内側表面温度を差し引いた結果を観ることにより、天候の変化に関わりなく効果が確認できる。表１及び図１２には、ＳＴＥＰ３実施後は、実施例１のカバーは、比較例のカバーよりも、カバーの内部温度が、フロントガラスの車内側表面温度との温度差が、５℃縮小することが示されている。このことから、天候の変化に関わりなく、実施例１のカバーは、比較例のカバーよりも温度低下効果が大きいことが分かる。 As shown in Table 1 and FIG. 12, it can be seen that in Example 1, even with a cover having a mesh ratio of 30%, the internal temperature of the cover can be lowered by 10 ° C. after STEP 3 as compared with Comparative Example. .. Further, as shown in FIG. 12, in Example 2 (cover with a mesh ratio of 50%), it can be seen that the internal temperature of the cover can be lowered by nearly 10 ° C. after STEP 3 as compared with Comparative Example.
Table 1 also shows the results of measuring the inside surface temperature of the windshield. The internal temperature of the cover varies according to changes in the weather, but the effect can be confirmed regardless of changes in the weather by observing the result of subtracting the internal surface temperature of the windshield from the internal temperature of the cover. In Tables 1 and 12, after STEP3 is performed, the temperature difference between the cover of Example 1 and the surface temperature of the windshield inside the vehicle is reduced by 5 ° C. as compared with the cover of Comparative Example. It is shown that. From this, it can be seen that the cover of Example 1 has a larger temperature lowering effect than the cover of Comparative Example regardless of the change in weather.
　以上、本発明の実施形態及び実施例について説明したが、本発明は、以上の実施形態及び実施例には限定されず、本発明の要旨を逸脱しない範囲において、各種の改良や変形を行ってもよいのはもちろんである。 Although the embodiments and examples of the present invention have been described above, the present invention is not limited to the above embodiments and examples, and various improvements and modifications are made without departing from the gist of the present invention. Of course, it is also good.
　１０…情報取得デバイス付き車両用窓ガラス、１２…車両用窓ガラス、１４…遮蔽層、１６…ブラケット、１８…情報取得デバイス、２０…カバー、２０Ａ…主面部、２０Ｂ…上側面部、２０Ｃ…下側面部、２０Ｄ…左側面部、２０Ｅ…右側面部、２２…開口部、２４…開口部、２６…爪部、２８…撮影レンズ部、３０…メッシュ孔、３０Ａ…開口領域、３０Ｂ…開口領域、３１…メッシュ
　なお、２０１９年６月２０日に出願された日本国特願２０１９－１１４２４５号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。 10 ... Vehicle window glass with information acquisition device, 12 ... Vehicle window glass, 14 ... Shielding layer, 16 ... Bracket, 18 ... Information acquisition device, 20 ... Cover, 20A ... Main surface, 20B ... Upper side surface, 20C ... Lower side surface, 20D ... left side surface, 20E ... right side surface, 22 ... opening, 24 ... opening, 26 ... claw, 28 ... photographing lens, 30 ... mesh hole, 30A ... opening area, 30B ... opening area, 31 ... Mesh In addition, the entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2019-114245 filed on June 20, 2019 are cited here, and the specification of the present invention is cited. It is incorporated as a disclosure of.

Claims (10)

  1. 　車両用窓ガラスと、前記車両用窓ガラスの室内側の面に固定されたブラケットと、前記ブラケットに取り付けられる情報取得デバイスと、前記車両用窓ガラスの室内側に前記ブラケットに取り付けられ、前記ブラケットと共に前記情報取得デバイスを収容する収容空間を形成するカバーと、を備えた情報取得デバイス付き車両用窓ガラスにおいて、
    　前記カバーは、前記収容空間と車内空間とを連通する複数の貫通孔からなる開口領域を有しており、
    　前記開口領域において、前記貫通孔が占める総面積の割合は、前記カバーの外表面の面積の３０％以上である、
    　情報取得デバイス付き車両用窓ガラス。     The vehicle window glass, the bracket fixed to the indoor side surface of the vehicle window glass, the information acquisition device attached to the bracket, and the bracket attached to the indoor side of the vehicle window glass and attached to the bracket. In a vehicle window glass with an information acquisition device, the cover forming a storage space for accommodating the information acquisition device is provided.
    The cover has an opening area composed of a plurality of through holes communicating the accommodation space and the vehicle interior space.
    The proportion of the total area occupied by the through holes in the opening region is 30% or more of the area of the outer surface of the cover.
    Window glass for vehicles with information acquisition device.
  2. 　前記開口領域において、前記貫通孔が占める総面積の割合は、前記カバーの外表面の面積の５０％以上である、
    　請求項１に記載の情報取得デバイス付き車両用窓ガラス。     The proportion of the total area occupied by the through holes in the opening region is 50% or more of the area of the outer surface of the cover.
    The window glass for a vehicle with the information acquisition device according to claim 1.
  3. 　前記カバーは、前記開口領域を２箇所以上備えている、
    　請求項１または２に記載の情報取得デバイス付き車両用窓ガラス。     The cover includes two or more of the opening areas.
    A window glass for a vehicle with an information acquisition device according to claim 1 or 2.
  4. 　少なくとも２箇所の前記開口領域の面積が同じである、
    　請求項３に記載の情報取得デバイス付き車両用窓ガラス。     The area of at least two of the opening regions is the same,
    The window glass for a vehicle with the information acquisition device according to claim 3.
  5. 　前記カバーは、前記開口領域を４箇所以上備えている、
    　請求項３または４に記載の情報取得デバイス付き車両用窓ガラス。     The cover includes four or more of the opening areas.
    A window glass for a vehicle with an information acquisition device according to claim 3 or 4.
  6. 　前記カバーが前記車両用窓ガラスの室内面側に取り付けられた場合において、
    　前記カバーは、前記車両用窓ガラスに正対する主面部と、前記主面部の周囲に折曲形成された上側面部、下側面部、左側面部及び右側面部と、を有し、
    　前記開口領域は、前記主面部、前記上側面部、前記下側面部、前記左側面部及び前記右側面部のうち少なくとも１つの面部に備えられる、
    　請求項１～５のいずれか一項に記載の情報取得デバイス付き車両用窓ガラス。     When the cover is attached to the interior surface side of the vehicle window glass,
    The cover has a main surface portion facing the vehicle window glass, and an upper side surface portion, a lower side surface portion, a left side surface portion, and a right side surface portion formed around the main surface portion.
    The opening region is provided on at least one of the main surface portion, the upper side surface portion, the lower side surface portion, the left side surface portion, and the right side surface portion.
    The window glass for a vehicle with the information acquisition device according to any one of claims 1 to 5.
  7. 　前記複数の貫通孔は、複数のメッシュ孔である、
    　請求項１～６のいずれか一項に記載の情報取得デバイス付き車両用窓ガラス。     The plurality of through holes are a plurality of mesh holes.
    The window glass for a vehicle with the information acquisition device according to any one of claims 1 to 6.
  8. 　前記メッシュ孔の開口比は、前記開口領域の任意の２０ｍｍ×２０ｍｍの範囲において、２０％以上８０％以下である、
    　請求項７に記載の情報取得デバイス付き車両用窓ガラス。     The opening ratio of the mesh holes is 20% or more and 80% or less in an arbitrary 20 mm × 20 mm range of the opening region.
    The window glass for a vehicle with the information acquisition device according to claim 7.
  9. 　前記メッシュ孔は、メッシュの線径が０．５ｍｍ以上２．０ｍｍ以下である、
    　請求項７または８に記載の情報取得デバイス付き車両用窓ガラス。     The mesh hole has a mesh wire diameter of 0.5 mm or more and 2.0 mm or less.
    A window glass for a vehicle with an information acquisition device according to claim 7 or 8.
  10. 　前記メッシュ孔の軸心が前記カバーの外表面の法線方向に対して傾斜される、
    　請求項７から９のいずれか１項に記載の情報取得デバイス付き車両用窓ガラス。     The axis of the mesh hole is inclined with respect to the normal direction of the outer surface of the cover.
    The window glass for a vehicle with an information acquisition device according to any one of claims 7 to 9.
PCT/JP2020/024164 2019-06-20 2020-06-19 Vehicle window with information acquisition device WO2020256114A1 (en)

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JP2019114245A JP2022112529A (en) 2019-06-20 2019-06-20 Window glass for vehicle with information acquisition device
JP2019-114245 2019-06-20

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001088611A (en) * 1999-09-22 2001-04-03 Fuji Heavy Ind Ltd On-vehicle camera
JP2016187988A (en) * 2015-03-30 2016-11-04 ダイハツ工業株式会社 Mounting device of on-vehicle equipment
JP2018109724A (en) * 2017-01-06 2018-07-12 日立オートモティブシステムズ株式会社 Stereo camera
CN109278662A (en) * 2018-09-26 2019-01-29 华勤通讯技术有限公司 Vehicle-mounted ADAS device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001088611A (en) * 1999-09-22 2001-04-03 Fuji Heavy Ind Ltd On-vehicle camera
JP2016187988A (en) * 2015-03-30 2016-11-04 ダイハツ工業株式会社 Mounting device of on-vehicle equipment
JP2018109724A (en) * 2017-01-06 2018-07-12 日立オートモティブシステムズ株式会社 Stereo camera
CN109278662A (en) * 2018-09-26 2019-01-29 华勤通讯技术有限公司 Vehicle-mounted ADAS device

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