Drip-proof structure for electronic apparatus

Abstract

To provide a drip-proof structure for an electronic apparatus which can be installed in a space saving manner and by a simple method and is capable of preventing water droplets from entering the inside of a housing.SOLUTION: A first sheet 5 comprises eaves 52 which are disposed at an upper side of a harness 4a while turning an adhesive surface 50 downward, and a second sheet 6 comprises an opposed part which is disposed while turning an adhesive surface 60 upward and opposed to a front end 521 of the eaves 52 of the first sheet 5. The front end 521 of the first sheet 5 and the opposed part (front end 621) of the second sheet 6 are adhered while holding a portion of the harness 4 between the adhesive surfaces 50 and 60. Thus, deformation and turning-up of the sheet and turning-up caused by adhesion to a peripheral component can be suppressed during work for mounting an electronic apparatus 100 to a vehicle.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a drip-proof structure for an electronic device. [Background technology]

[0002] In-vehicle electronic devices are placed in locations such as the instrument panel, panel pockets, glove compartments, and console boxes, and some are installed in locations where water droplets may flow in from outside. In electronic devices installed in such locations, water droplets may drip directly onto openings in the housing of the electronic device or run along the top surface of the housing to reach the openings, and then enter the housing through the openings.

[0003] If water droplets come into contact with the circuit board or electronic components inside the housing, they can cause a short circuit, potentially disrupting the operation of the electronic device. Furthermore, if water droplets get into the connector's mating section, they can cause a short circuit or poor electrical continuity. Therefore, electronic devices installed in such locations require a drip-proof structure to prevent water droplets from entering the housing from the outside through openings.

[0004] A conventional drip-proof structure for an in-vehicle electronic device having an opening on the side of the housing has been proposed, in which a sheet is placed on the top of the housing and a visor formed from a part of this sheet prevents water droplets from entering the opening. For example, Patent Document 1 discloses that the visor is formed to cover, as viewed from above, the part of the electronic device that protrudes further forward in the vehicle than the cover that covers the top of the electronic device, and is tilted downward from a substantially horizontal direction.

[0005] Furthermore, Patent Document 2 discloses that a sheet placed above the top surface of the housing has a visor that covers the connector, and that the visor is bent downward by contact with surrounding vehicle components at a location away from the opening where the connector is placed. According to these prior art technologies, water droplets dripping from above the housing move toward the tip of the visor and drip downward from the tip edge of the visor at a location away from the opening. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6063905 [Patent Document 2] Patent No. 7314563 Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the drip-proof structures using sheets such as those described in Patent Documents 1 and 2, there is a problem in that drip-proofing cannot be ensured if the eaves portion is deformed or rolled up. Furthermore, when an adhesive sheet is used, there is a concern that the sheet may stick to surrounding components and roll up.

[0008] One possible method to prevent deformation and curling of the eaves portion of the seat is to increase the rigidity of the eaves portion by increasing the thickness of the eaves portion or by providing reinforcing beams, but this results in a problem of requiring a larger installation space. Also, if measures are taken to prevent the seat from curling, such as abutting the eaves portion against surrounding vehicle parts, this increases the number of steps required for installation on the vehicle, making the work more complicated.

[0009] The present disclosure discloses technology for solving the above-mentioned problems, and aims to provide a drip-proof structure for electronic devices that can be installed in a space-saving and simple manner and that can prevent water droplets from entering the inside of the housing. [Means for solving the problem]

[0010] The drip-proof structure for an electronic device disclosed herein includes a housing having a side with an opening, an upper surface in contact with the upper edge of the side, and a lower surface in contact with the lower edge of the side, and a harness connected to a connector of the electronic device arranged in the opening, and the drip-proof structure for an electronic device includes a sheet that prevents water droplets from outside from entering the housing through the opening. The sheet includes a first sheet and a second sheet, each of which has adhesive properties at least in a portion that is to be adhered to the other. The first sheet has a cover portion that covers at least a portion of the upper surface and a visor portion that extends from the cover portion beyond the upper edge and is arranged above the harness with the adhesive surface facing downward. The second sheet is arranged with the adhesive surface facing upward and has an opposing portion that faces the tip of the visor portion of the first sheet in the extending direction, and the tip of the first sheet and the opposing portion of the second sheet are adhered to each other with a portion of the harness sandwiched between their respective adhesive surfaces. [Effects of the Invention]

[0011] According to the drip-proof structure of the electronic device disclosed herein, the tip of the first sheet and the opposing part of the second sheet are adhered with a part of the harness sandwiched between their respective adhesive surfaces, thereby suppressing deformation and curling of the sheet when installing the electronic device in a vehicle, and curling due to the adhesive surface being exposed and sticking to surrounding components.This allows for space-saving and simple installation, and makes it possible to prevent water droplets from entering the inside of the housing. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a state in which an electronic device according to a first embodiment is attached to a vehicle. [Figure 2] 1 is a perspective view of a drip-proof structure of an electronic device according to a first embodiment, viewed from above. [Figure 3] 1 is a perspective view of the drip-proof structure of the electronic device according to the first embodiment, viewed from the bottom side. [Figure 4] 1 is a side view illustrating a drip-proof structure of an electronic device according to a first embodiment. [Figure 5] 1 is a cross-sectional view illustrating a drip-proof structure of an electronic device according to a first embodiment. [Figure 6] 10 is a perspective view of a drip-proof structure of an electronic device according to a second embodiment, seen from above. FIG. [Figure 7] 10 is a perspective view of a drip-proof structure of an electronic device according to a second embodiment, viewed from the bottom side. FIG. [Figure 8] FIG. 11 is a perspective view of a drip-proof structure of an electronic device according to a third embodiment, as viewed from above. [Figure 9] 10 is a side view illustrating a drip-proof structure of an electronic device according to a third embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Embodiment 1 A drip-proof structure for an electronic device according to a first embodiment will be described below with reference to the drawings. FIG. 1 is a perspective view showing a state in which an electronic device according to the first embodiment is mounted on a vehicle, and for convenience, a part of the panel is cut away so that the state of the electronic device can be seen. FIGS. 2 and 3 show the drip-proof structure for the electronic device according to the first embodiment, with FIG. 2 being a perspective view seen from above and FIG. 3 being a perspective view seen from below. FIG. 4 is a side view illustrating the drip-proof structure for the electronic device according to the first embodiment, and FIG. 5 is a cross-sectional view taken along the line AA in FIG. 2. In each drawing, the same or corresponding parts are denoted by the same reference numerals.

[0014] As shown in Figures 1 and 2, the electronic device 100 of embodiment 1 has a housing 1 having a side 11 with an opening 2, an upper surface 12 contacting the upper edge of the side 11, a lower surface 13 contacting the lower edge of the side 11, and a side 14 opposite the side 11, and harnesses 4a and 4b are connected to a connector 3 of the electronic device arranged in the opening 2.

[0015] The electronic device 100 is mounted on a vehicle such as an automobile and connected to the vehicle via harnesses 4a and 4b. Here, an ETC (Electronic Toll Collection System: registered trademark) vehicle-mounted device is taken as an example of the vehicle-mounted electronic device, and its drip-proof structure will be described.

[0016] Considering the convenience of the user (driver) when inserting and removing the ETC card, side surface 14 of electronic device 100 where the ETC card insertion slot is located is located on the driver's side, and side surface 11 where connector 3 is located is located further forward of the vehicle than side surface 14 where the card insertion slot is located. Housing 1 is positioned with its longitudinal direction facing the front-to-rear direction of the vehicle.

[0017] The electronic device 100 is placed in a panel 7 below the instrument panel of the automobile, and is attached to the panel 7 via an adhesive material 8. However, the method of attaching the electronic device 100 is not limited to this, and the housing 1 may have an attachment portion and be attached to the panel 7 via screws, metal brackets, or the like. Air conditioner piping and the like are located above the rear surface of the panel 7, and there is a possibility that water droplets due to condensation will drip onto the top surface 12 of the housing 1 and around the opening 2.

[0018] An opening 2 is provided on a side surface 11 of the housing 1, through which a connector 3 of the electronic device 100 is exposed. In the example shown in Fig. 1, two connectors 3 are arranged side by side in the horizontal direction, but the shape, number, arrangement, etc. of the opening 2 and the connectors 3 are not particularly limited, and the connector 3 may or may not protrude from the side surface 11. When the connector 3 protrudes from the side surface 11, the opening 2 is formed inside a flange that protrudes in a frame shape from the side surface 11, and the connector 3 is arranged so as to be surrounded by the flange.

[0019] The harness 4a has a harness connector 41 that engages with the connector 3 of the electronic device 100, and an electric wire 42 that is a bundle of multiple electric wires used for power supply or signal communication. The harness connector 41 may be attached after a terminal is crimped to the tip of the electric wire 42, or may be attached directly to the electric wire 42 without using a terminal.

[0020] The type of harnesses 4a, 4b is not particularly limited, and they may not have the harness connector 41, but may have terminals attached to the ends of the wires 42 or cables. Terminals come in various shapes, such as open-end, rod, round, and CB. The wires 42 or cables are made of a conductor such as copper with low electrical resistivity, coated with an insulating coating.

[0021] As shown in FIGS. 2 and 3, electronic device 100 has a drip-proof structure that includes a sheet that prevents water droplets from entering housing 1 through opening 2. The sheet includes a first sheet 5 and a second sheet 6 that are adhesive on at least a portion of one side that is to be adhered to another. That is, first sheet 5 and second sheet 6 may be adhesive on the entire surface of one side, or may be adhesive only on a portion of one side that is to be adhered to another. In the following description, first sheet 5 and second sheet 6 may not be distinguished from each other, and may be simply referred to as "sheet" when referring to both.

[0022] The first sheet 5 and the second sheet 6 are made of a flexible material, and can be easily attached to the housing 1 made of synthetic resin or metal. It is also desirable that either or both of the first sheet 5 and the second sheet 6 are made of a transparent synthetic plastic material. Specifically, the first sheet 5 and the second sheet 6 are made of a highly transparent material such as polyethylene terephthalate (PET) or polypropylene (PP).

[0023] 4 and 5, the first sheet 5 has a cover portion 51 that covers at least a part of the upper surface 12 of the housing 1, and an eave portion 52 that extends from the cover portion 51 beyond the upper edge 112 and is arranged above the harnesses 4a, 4b with its adhesive surface 50 facing downward. When the connector 3 protrudes from the side surface 11, the eave portion 52 is arranged above the connector 3 and the harnesses 4a, 4b.

[0024] The second sheet 6 is disposed with its adhesive surface 60 facing upward, and has a facing portion facing a tip 521 in the extension direction of the overhanging portion 52 of the first sheet 5. The second sheet 6 according to the first embodiment has a cover portion 61 that covers at least a portion of the lower surface 13, and an overhanging portion 62 that extends from the cover portion 61 beyond the lower edge 113 and is disposed below the harness 4a, and the tip 621 in the extension direction of the overhanging portion 62 of the second sheet 6 is the facing portion. The tip 521 of the first sheet 5 and the facing portion (i.e., tip 621) of the second sheet 6 are bonded together with parts of the harnesses 4a, 4b sandwiched between the respective adhesive surfaces 50, 60.

[0025] 5, the first sheet 5 is made up of a single sheet, and at least the cover portion 51 and the tip portion 521 have an adhesive surface 50 on one side. The cover portion 51 is placed with the adhesive surface 50 facing downward and is adhered to the upper surface 12. Similarly, the second sheet 6 is also made up of a single sheet, and at least the cover portion 61 and the tip portion 621 have an adhesive surface 60 on one side. The cover portion 61 is placed with the adhesive surface 60 facing upward and is adhered to the lower surface 13.

[0026] The extension direction of the eave portion 52 of the first sheet 5 up to the tip 521, in other words, the extension direction of the eave portion 52 of the first sheet 5 excluding the tip 521, is inclined obliquely downward with respect to the upper surface 12. Furthermore, in the first embodiment, the extension direction of the eave portion 62 of the second sheet 6 up to the tip 621, i.e., the extension direction of the eave portion 62 of the second sheet 6 excluding the tip 621, is inclined obliquely upward with respect to the lower surface 13.

[0027] When the electronic device 100 is an ETC on-board unit, the extending direction of the canopy portion 52 of the first sheet 5 up to the tip portion 521 is inclined obliquely downward toward the front of the vehicle. Furthermore, the upper surface 12 of the housing 1 may be inclined obliquely downward toward the front of the vehicle. Specifically, the housing 1 may be arranged so that the upper edge 112 of the side surface 11 is lower than the upper edge of the opposing side surface 14, or a housing 1 may be used in which the upper surface 12 is inclined relative to the lower surface 13.

[0028] As described above, according to the drip-proof structure of electronic device 100 according to embodiment 1, first sheet 5 has overhang portion 52, so that water droplets dripping from above housing 1 move toward the tip of overhang portion 52 and drip downward from the tip edge of overhang portion 52 that is away from opening 2. This prevents water droplets dripping from above housing 1 from passing through opening 2 into the interior of housing 1 or from entering the engagement portion between connector 3 of electronic device 100 and harness connector 41.

[0029] Furthermore, since the second sheet 6 has a cover portion 61 and a canopy portion 62 like the first sheet 5, it is possible to prevent water droplets flying from below the housing 1 from entering the inside of the housing 1 through the opening 2 or from entering the engagement portion between the connector 3 of the electronic device 100 and the harness connector 41.

[0030] In addition, the extension direction of the eave portion 52 of the first sheet 5 up to the tip portion 521 is inclined obliquely downward relative to the upper surface 12, so that water droplets that drip onto the upper part of the first sheet 5 can be made to drip quickly from the tip edge of the eave portion 52. Furthermore, because the upper surface 12 of the housing 1 is inclined obliquely downward toward the front of the vehicle, water droplets that drip onto the upper surface 12 can be moved toward the side surface 11 in the front of the vehicle and made to drip quickly from the tip edge of the eave portion 52.

[0031] Furthermore, by bonding the tip 521 of the eaves portion 52 of the first sheet 5 and the tip 621 of the eaves portion 62 of the second sheet 6 with a portion of the harnesses 4a, 4b sandwiched therebetween, the rigidity of the eaves portion 52 is improved, and deformation and curling of the sheet can be suppressed when the electronic device 100 is attached to the vehicle. Also, curling due to adhesion to surrounding components caused by the exposed adhesive surfaces 50, 60 can be suppressed.

[0032] Furthermore, by adhering the second sheet 6 to the eaves portion 52 of the first sheet 5, the strength and durability are improved compared to eaves portion 52 formed only from the first sheet 5, and it is possible to prevent water droplets from entering the inside of the housing for a long period of time. Also, there is no need to increase the thickness of the eaves portion or provide reinforcing beams to improve rigidity, and there is no need to abut the eaves portion 52 against other components to prevent it from rolling up, so installation can be done in a space-saving and simple manner.

[0033] Furthermore, by forming one or both of the first sheet 5 and the second sheet 6 from a transparent synthetic plastic material, the engagement state between the connector 3 and the harness connector 41 can be confirmed with the sheet installed, thereby preventing a decrease in workability due to the installation of the sheet.

[0034] Embodiment 2 6 and 7 show the drip-proof structure of an electronic device according to embodiment 2, with FIG. 6 being a perspective view seen from above and FIG. 7 being a perspective view seen from below. Electronic device 101 according to embodiment 2 is an ETC vehicle-mounted unit similar to electronic device 100 according to embodiment 1 above. Electronic device 101 has a first sheet 5 and a second sheet 6a as its drip-proof structure, with the shape of second sheet 6a differing from that of embodiment 1 above. Other configurations are the same as those of embodiment 1 above, and therefore will not be described here.

[0035] The second sheet 6a is arranged with its adhesive surface facing upward, and has a facing portion that faces the tip end 521 of the eave portion 52 of the first sheet 5 in the extension direction. In embodiment 2, the entire second sheet 6a is the facing portion, and has an adhesive surface on the entire surface of one side. The facing portion of the second sheet 6a also has an expanded portion 63 that is formed to be wider than the eave portion 52 of the first sheet 5 in a direction parallel to the upper edge of the side surface 11. The expanded portion 63 is folded upward and adhered to the upper surface of the eave portion 52 of the first sheet 5.

[0036] In the extension direction of the eave portion 52 of the first sheet 5, the length dimension of the second sheet 6a is approximately equal to the length dimension of the tip end 521 of the eave portion 52 of the first sheet 5, and the length dimension of the widened portion 63 is equal to or less than the length dimension of the tip end 521 of the first sheet 5. The width dimension (folding width) of the widened portion 63 perpendicular to the extension direction of the eave portion 52 of the first sheet 5 is not particularly limited, but it is necessary that the widened portion 63 is easy to fold and has a width that allows stable adhesion to the upper surface of the first sheet 5.

[0037] The electric wires 42 of the harnesses 4a, 4b are usually covered with a tube made of synthetic resin such as polyvinyl chloride. When the electric wires 42 have a relatively large diameter, they have high rigidity, and the portion extending from the harness connector 41 connected to the connector 3 of the electronic device 101 is straight (see FIG. 4). On the other hand, when the electric wires 42 have a relatively small diameter, they have low rigidity, and the portion extending from the harness connector 41 is curved.

[0038] In the above-described first embodiment, when adhering the first sheet 5 and the second sheet 6, it is necessary to adhere them while aligning the positions in the extension direction of the eaves portion 52 of the first sheet 5 and in the direction perpendicular thereto so as not to shift relative to each other. If the electric wires 42 of the harnesses 4a, 4b are highly rigid and straight, the position of the first sheet 5 adhered to the top surface 12 of the housing 1 and the electric wires 42 is stable, and therefore it is relatively easy to position and adhere the second sheet 6 to the first sheet 5.

[0039] On the other hand, if the portion of the electric wires 42 extending from the harness connector 41 is curved, the position of the first sheet 5 adhered to the upper surface 12 of the housing 1 and the electric wires 42 will not be stable, and it will take time to position and adhere the second sheet 6 to the first sheet 5. The same result will be obtained if the second sheet 6 is adhered to the lower surface 13 of the housing 1 and the electric wires 42 before the first sheet 5.

[0040] In contrast, the second sheet 6a according to the second embodiment has a smaller area than the second sheet 6 according to the first embodiment, and has an expanded width portion 63, which makes it easier to position and adhere to the first sheet 5. The positioning of the eave portion 52 of the first sheet 5 in the extension direction can be achieved simply by aligning the leading edge of the leading end portion 521 of the first sheet 5 with the leading edge of the second sheet 6a, and the alignment in the direction perpendicular to this can be adjusted by the amount of bending of the expanded width portion 63.

[0041] Therefore, even if the electric wires 42 extending from the harness connector 41 are curved and the position of the first sheet 5 is unstable, the first sheet 5 and the second sheet 6 can be bonded together in a short time. In addition, by folding the widened portion 63 of the second sheet 6a, the adhesive surface in that portion is doubled and the sheet thickness is tripled, improving the adhesive strength and durability of the second sheet 6a.

[0042] According to the drip-proof structure of the electronic device 101 of embodiment 2, since the second sheet 6a does not have a canopy portion, it is not possible to prevent the intrusion of water droplets flying from below the housing 1, but otherwise the same effects as those of embodiment 1 above can be obtained.

[0043] In addition, the widened portion 63 of the second sheet 6a is folded upward and adhered to the upper surface of the eaves portion 52 of the first sheet 5, which makes it easy to position and adhere the sheet even when the harnesses 4a, 4b have a small wire diameter and are curved, thereby reducing the work time. Furthermore, even if the adhesiveness of the sheet decreases due to deterioration over time, the adhesive strength of the second sheet 6a is reinforced by the widened portion 63, so adhesion can be maintained for a long period of time. The second sheet 6 according to the first embodiment may have the widened portion 63 according to the second embodiment at the opposing portion (tip portion 621).

[0044] Embodiment 3 Fig. 8 is a perspective view of the drip-proof structure of the electronic device according to embodiment 3 as seen from above, and Fig. 9 is a side view illustrating the drip-proof structure of the electronic device according to embodiment 3. The electronic device 102 according to embodiment 3 is an ETC in-vehicle unit, and has the same configuration as the electronic device 100 according to embodiment 1 except that a metal bracket 9 is installed on the top, so a description thereof will be omitted here.

[0045] 8, electronic device 102 has a component (here, metal bracket 9) disposed above top surface 12 of housing 1. Housing 1 and metal bracket 9, and metal bracket 9 and the installation surface of the vehicle, are connected via, for example, an adhesive material (not shown).

[0046] In the above-described first embodiment, the cover portion 51 of the first sheet 5 is placed with the adhesive surface 50 facing downward and is adhered to the upper surface 12 (see FIG. 5), but if a component such as a metal bracket 9 is placed above the upper surface 12, there may not be enough space on the upper surface 12 to adhere the cover portion 51. To accommodate such a case, in the third embodiment, the first sheet is divided into two pieces.

[0047] 9, one of the divided first sheets 5a is adhered to the underside of the metal bracket 9 with its adhesive surface 50 facing upward, thereby forming a cover portion 51, and a portion of it is exposed from the edge of the metal bracket 9. The other divided first sheet 5b is adhered to the exposed portion 53 of the one first sheet 5a with its adhesive surface 50 facing downward, thereby forming an eave portion 52.

[0048] The second sheet 6 is placed with its adhesive surface 60 facing upward, and has a facing portion facing the tip 521 in the extension direction of the overhanging portion 52 of the first sheet 5. The second sheet 6 has a cover portion 61 that covers at least a part of the lower surface 13, and an overhanging portion 62 that extends from the cover portion 61 beyond the lower edge 113 and is placed below the harnesses 4a, 4b, and the tip 621 in the extension direction of the overhanging portion 62 of the second sheet 6 is the facing portion.

[0049] The tip portion 521 of the first sheet 5b and the opposing portion (tip portion 621) of the second sheet 6 are bonded with parts of the harnesses 4a, 4b sandwiched between the respective adhesive surfaces 50, 60. The tip portion 621 of the second sheet 6 may have a widened portion 63 similar to that of the second embodiment. Furthermore, the second sheet 6a according to the second embodiment may be used in the third embodiment.

[0050] According to the drip-proof structure of the electronic device 102 of embodiment 3, even when components are arranged above the upper surface 12 of the housing 1 and there is no space to adhere the cover portion 51, the divided first sheets 5a, 5b can form the eave portion 52 similar to that of embodiment 1 above, and the same effect as that of embodiment 1 above can be obtained.

[0051] In the above embodiments 1 to 3, an ETC vehicle unit has been used as an example, but the drip-proof structure of the electronic device according to the present disclosure can be applied to vehicle electronic devices other than ETC vehicle units, and can also be applied to electronic devices other than those for vehicle use.

[0052] Although various exemplary embodiments and examples are described in this disclosure, the various features, aspects, and functions described in one or more embodiments are not limited to the application of a particular embodiment, but may be applied to the embodiments alone or in various combinations. Therefore, countless variations not illustrated are contemplated within the scope of the technology disclosed in this specification. For example, this includes cases where at least one component is modified, added, or omitted, and even cases where at least one component is extracted and combined with components of another embodiment.

[0053] Various aspects of the present disclosure are summarized below as appendices.

[0054] (Appendix 1) A drip-proof structure for an electronic device comprising a housing having a side surface provided with an opening, an upper surface in contact with an upper edge of the side surface, and a lower surface in contact with a lower edge of the side surface, wherein a harness is connected to a connector of the electronic device arranged in the opening, a sheet for preventing water droplets from entering the housing from the outside through the opening, the sheet including a first sheet and a second sheet having adhesive properties on at least a portion of one side thereof that is to be adhered to the other; the first sheet has a cover portion that covers at least a part of the upper surface, and a canopy portion that extends from the cover portion beyond the upper edge and is disposed above the harness with its adhesive surface facing downward; the second sheet is disposed with its adhesive surface facing upward and has a facing portion facing a tip end of the overhang portion of the first sheet in an extension direction; A drip-proof structure for an electronic device in which the tip portion of the first sheet and the opposing portion of the second sheet are bonded together with a portion of the harness sandwiched between their respective adhesive surfaces. (Appendix 2) 2. The drip-proof structure for an electronic device according to claim 1, wherein the extending direction of the eave portion of the first sheet to the tip is inclined obliquely downward with respect to the upper surface. (Appendix 3) the second sheet has a cover portion that covers at least a part of the lower surface, and a visor portion that extends from the cover portion beyond the lower edge and is positioned below the harness, The drip-proof structure for electronic devices according to claim 1 or 2, wherein the tip of the eave portion of the second sheet in the extension direction is the facing portion. (Appendix 4) the opposing portion of the second sheet has an expanded width portion formed to be wider than the overhang portion of the first sheet in a direction parallel to the upper edge, The drip-proof structure for an electronic device described in any one of Supplementary Note 1 to Supplementary Note 3, characterized in that the widened portion is folded upward and adhered to the upper surface of the eave portion of the first sheet. (Appendix 5) The first sheet is made up of a single sheet, The drip-proof structure for an electronic device described in any one of Appendix 1 to Appendix 4, characterized in that the cover portion is positioned with the adhesive side facing downward and is adhered to the upper surface. (Appendix 6) a component is placed on the upper surface, and the first sheet is divided into two; one of the divided first sheets is attached to the underside of the component with its adhesive surface facing upward to form the cover portion, and a portion of the first sheet is exposed from an edge of the component; The drip-proof structure for an electronic device described in any one of Appendix 1 to Appendix 4, characterized in that the other of the divided first sheets is adhered to the exposed portion of the one of the first sheets with its adhesive side facing downward, forming the eave portion. (Appendix 7) 7. The drip-proof structure for an electronic device according to any one of claims 1 to 6, wherein the sheet is made of a flexible material. (Appendix 8) The drip-proof structure for an electronic device described in any one of Appendix 1 to Appendix 7, characterized in that either or both of the first sheet and the second sheet are formed of a transparent synthetic plastic material. (Appendix 9) The drip-proof structure for an electronic device according to any one of Supplementary Note 1 to Supplementary Note 8, wherein the electronic device is mounted on a vehicle and connected to the vehicle via the harness. (Appendix 10) 10. The drip-proof structure for electronic devices according to claim 9, wherein the top surface of the housing is inclined diagonally downward toward the front of the vehicle. [Industrial Applicability]

[0055] The present disclosure can be used as a drip-proof structure for electronic devices, particularly as a drip-proof structure for in-vehicle electronic devices. [Explanation of symbols]

[0056] 1 housing, 2 opening, 3 connector, 4a, 4b harness, 5, 5a, 5b first sheet, 6, 6a second sheet, 7 panel, 8 adhesive material, 9 metal bracket, 11, 14 side, 12 top surface, 13 bottom surface, 41 harness connector, 42 electric wire, 50, 60 adhesive surface, 51, 61 cover portion, 52, 62 eaves portion, 53 exposed portion, 63 widened portion, 100, 101, 102 electronic device, 112 upper edge, 113 lower edge, 521, 621 tip portion

Claims

1. A drip-proof structure for an electronic device comprising a housing having a side surface provided with an opening, an upper surface in contact with an upper edge of the side surface, and a lower surface in contact with a lower edge of the side surface, wherein a harness is connected to a connector of the electronic device arranged in the opening, a sheet for preventing water droplets from entering the housing from the outside through the opening, the sheet including a first sheet and a second sheet having adhesive properties on at least a portion of one side thereof that is to be adhered to the other; the first sheet has a cover portion that covers at least a part of the upper surface, and a canopy portion that extends from the cover portion beyond the upper edge and is disposed above the harness with its adhesive surface facing downward; the second sheet is disposed with its adhesive surface facing upward and has a facing portion facing a tip end of the overhang portion of the first sheet in an extension direction; A drip-proof structure for an electronic device, characterized in that the tip portion of the first sheet and the opposing portion of the second sheet are adhered with a portion of the harness sandwiched between their respective adhesive surfaces.

2. 2. The drip-proof structure for electronic equipment according to claim 1, wherein the extending direction of the eave portion of the first sheet to the tip is inclined obliquely downward with respect to the upper surface.

3. the second sheet has a cover portion that covers at least a part of the lower surface, and a visor portion that extends from the cover portion beyond the lower edge and is positioned below the harness, 3. The drip-proof structure for electronic equipment according to claim 1, wherein a tip end of the eave portion of the second sheet in the extending direction thereof is the facing portion.

4. the opposing portion of the second sheet has an expanded width portion formed to be wider than the eave portion of the first sheet in a direction parallel to the upper edge, 3. The drip-proof structure for electronic equipment according to claim 1, wherein the widened portion is folded upward and bonded to an upper surface of the eave portion of the first sheet.

5. the first sheet is composed of a single sheet, 3. The drip-proof structure for electronic equipment according to claim 1, wherein the cover is disposed with its adhesive surface facing downward and is adhered to the top surface.

6. a component is disposed on the upper surface of the first sheet, the first sheet being divided into two, one of the divided first sheets is attached to the underside of the component with its adhesive surface facing upward to form the cover portion, and a portion of the first sheet is exposed at an edge of the component; The drip-proof structure for an electronic device as described in claim 1 or claim 2, characterized in that the other of the divided first sheets is adhered to the exposed portion of the one first sheet with its adhesive side facing downward, forming the eave portion.

7. 3. The drip-proof structure for electronic equipment according to claim 1, wherein the sheet is made of a flexible material.

8. 3. The drip-proof structure for electronic equipment according to claim 1, wherein either one or both of the first sheet and the second sheet are made of a transparent synthetic plastic material.

9. 3. The drip-proof structure for electronic equipment according to claim 1, wherein the electronic equipment is mounted on a vehicle and connected to the vehicle via the harness.

10. 10. The drip-proof structure for electronic equipment according to claim 9, wherein the top surface of the housing is inclined obliquely downward toward the front of the vehicle.

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