JP2013110721A - Waterproof electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing structure in which the water stagnating between outermost part of the housing and a packing can be drained easily.SOLUTION: In a waterproof electronic device 10, an enclosed housing space is formed internally by combining a first housing 100 and a second housing 200 from the front and rear direction while interposing a packing 300 therebetween, and an electronic circuit is housed in the housing space. A fastening member receiver 151 is provided along the upper edge of the first housing 100, and a packing placing part 152 for receiving a packing is provided so that a valley is not formed in the packing 300 under the fastening member receiver. The second housing 200 is provided with a fastening member insertion hole 251 at a position corresponding to the fastening member receiver 151, a packing retainer 260 having a shape corresponding to the packing placing part, and a drain outlet 253 formed with the same height as the packing retainer. The liquid entering onto the packing is drained from the drain outlet 253.

Description

  The present invention relates to a waterproof electronic device, and more particularly, to a structure and packing of a sealed container that accommodates an electronic circuit inside the electronic device in a sealed state using a seal (packing).

  Various types of waterproof structures for electronic devices used in places exposed to raindrops, waterdrops, water sprays, and in humid environments, such as outdoors and bathrooms, have been known. Patent Document 1 (Japanese Patent Laid-Open No. 2010-177616) includes a housing main body that houses an electronic device and a lid that covers an opening of the housing main body. A packing is attached along the peripheral edge of the lid. Discloses a housing structure of an electronic device in which when the lid is completely closed with respect to the opening of the housing body, the packing closely contacts the peripheral edge of the housing body, and the gap between the lid and the housing body is sealed. .

  In the following Patent Document 1, in order to distribute the water that has entered the inside of the housing body, a communication path that connects the inside and the outside of the housing is formed in the lower part of the housing, and the water accumulated in the lower part of the housing is subjected to a capillary phenomenon. Discloses a structure for discharging to the outside of the housing.

  The drainage structure is a structure for discharging water that has entered the housing of the electronic device. However, the electronic device is constituted by a front housing and a rear housing, and by combining these two housings, an accommodation space for accommodating an electronic circuit is formed inside, and a packing is interposed at a portion where the two housings are combined. In an electronic device that seals the inside, there are cases where the outside of the packing is coupled with screws in order to fix the housings together. In this case, a space is formed between the packing and the outermost part of the housing, and there is a risk that water will accumulate in this space. For this reason, in order to drain water in this space, there is known one in which an opening for drainage is provided between the outermost portion (upper surface) of one housing and the packing.

  By the way, since the packing is arranged in a state in which the packing is inserted between the screws for coupling the housings to each other, the packing is arranged in an uneven state, and the packing and the outermost part of the housing are affected by this influence. There were also irregularities in the space between. However, if there are irregularities in the space formed around these packings, there is a problem that even if an opening for drainage is provided, water stays in the irregularities and it is difficult to discharge water.

  Moreover, the following patent document 2 (Unexamined-Japanese-Patent No. 2010-041086) is disclosing the structure which attaches the electric equipment used in a bathroom etc. to a wall. In this mounting structure, the bathroom television device is fixed to the inner wall of the bathroom via a mounting bracket. In order to achieve this, a hook-shaped metal fitting side engaging portion is provided on the upper side of the mounting metal fitting, and an L-shaped metal fitting side engaging portion is provided on the lower side. Correspondingly, device side engaging portions are provided on the upper and lower sides of the rear surface of the bathroom television set. When mounting the bathroom TV on the wall, first, the mounting bracket was directly fixed to the bathroom inner wall with a screw, and then the equipment side engaging portion provided on the upper side of the back of the bathroom TV device was provided on the upper side of the mounting bracket. Lock to the hook-shaped metal fitting side engaging part. Furthermore, the apparatus side engaging part provided in the lower back part of the bathroom television apparatus is locked to the L-shaped metal fitting side provided on the lower side of the mounting bracket, thereby fixing the bathroom TV apparatus to the bathroom wall surface.

  If the opening for drainage described above and the device side engaging portion as in Patent Document 2 below are provided in the housing of the electronic device, there is a problem that the structure becomes complicated and the number of manufacturing steps increases.

JP 2010-177616 A JP 2010-041086 A

  Accordingly, an object of the present invention is to form an electronic device by a front housing and a rear housing, and by combining these two housings, an accommodation space for accommodating an electronic circuit is formed therein, and the two housings are combined. In an electronic device that seals the inside with a packing interposed, a housing structure that easily drains water staying between the outermost portion of the housing and the packing is provided.

  Furthermore, an object of the present invention is to provide a housing structure by integrating a mounting hole provided in a housing of an electronic device with the drainage opening when an electronic device is attached to a wall surface or the like using a mounting bracket. Is to reduce manufacturing man-hours.

  In order to solve the above-mentioned problems, the present invention forms a housing space sealed inside by combining the first housing and the second housing from the front-rear direction with the packing interposed therebetween. A waterproof electronic device that houses an electronic circuit in the housing space, wherein the first housing is a fastening member that fixes the first and second housings to each other along at least an upper edge of the first housing. A fastening member receiver for receiving the packing, and a packing placement portion for receiving the packing so that a valley is not formed in the packing at least below the fastening member receiver, and the second housing corresponds to the fastening member receiver. The fastening member is inserted into the position, thereby corresponding to the fastening member insertion hole for achieving the fastening with the first housing, and the packing mounting portion. A packing restraint that maintains the housing space in a sealed state by pressurizing the packing placed on the packing placement portion when the first and second housings are combined from the front-rear direction. And a drain port formed at the same height as the packing restraint, and the liquid that has entered the top of the packing is discharged from the drain port.

  Further, one aspect of the present invention is characterized in that the packing placement portion is provided in a straight line at least below the fastening member receiver.

  Moreover, one aspect of the present invention is characterized in that the packing mounting portion is provided horizontally at least below the fastening member receiver.

  One embodiment of the present invention is characterized in that the drain outlet opens downward.

  According to another aspect of the present invention, the waterproof electronic device includes a mounting bracket for fixing the second housing to a building, and the mounting bracket is locked to the drain port, thereby the waterproof electronic device. It is attached to.

  Furthermore, in one embodiment of the present invention, a display device is incorporated in the first housing.

With the above configuration, the present invention exhibits the excellent effects described below. That is, by combining the first housing and the second housing from the front-rear direction with the packing interposed therebetween, the electronic circuit can be sealed and accommodated inside. Furthermore, the first housing is provided with a packing placement portion for receiving the packing so that at least the valley on the packing on the upper edge side of the housing is not formed, and the second housing has a packing restrainer having a shape corresponding to the packing placement portion. Since the drain outlet is provided at the same height as the packing restraint, the liquid that has entered the upper side of the packing can be easily discharged from the outlet without staying above the packing.

  Moreover, according to the one aspect | mode of the waterproof electronic device of this invention, a packing mounting part is formed in linear form. As a result, no valley is formed on the packing placement portion and the packing, so that the liquid that has entered above the packing can be easily discharged from the drain port without staying.

  Moreover, according to the one aspect | mode of the waterproof electronic apparatus of this invention, a packing mounting part is formed horizontally. Accordingly, no valley is formed on the packing mounting portion and the packing, so that the liquid that has entered the upper side of the packing can be easily discharged from the drain port without being unevenly retained.

  In addition, according to one aspect of the waterproof electronic device of the present invention, the drain port opens downward. Thereby, the liquid that has entered the packing placement portion and the upper side of the packing can be easily discharged downward.

  Moreover, according to one aspect of the waterproof electronic device of the present invention, the electronic device is fixed to the building using the mounting bracket. At that time, the mounting bracket is locked to the drain port. As a result, the housing structure can be simplified and the number of manufacturing steps can be reduced.

  Further, according to one aspect of the waterproof electronic device of the present invention, since the display device is incorporated in the housing, the waterproof electronic device can be used as a bathroom television device or other viewing devices.

FIG. 1 is an external perspective view of the bathroom television apparatus 10 as viewed from the front and obliquely above. FIG. 2 is a front view and a right side view of the bathroom television device 10. FIG. 3 is a rear view of the bathroom television apparatus 10. FIG. 4 is an exploded perspective view of the bathroom television device 10 as seen from the rear in an exploded state. FIG. 5 is an enlarged view of a portion V in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is an enlarged view of a portion VII in FIG. 6 and shows a state in which the mounting bracket is removed from the drain port. FIG. 8 is an enlarged view of a portion VII in FIG. 6 and shows a state in which the attachment fitting is attached to the drain port.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best mode for carrying out the present invention will be described in detail below with reference to the drawings together with embodiments. However, the embodiment shown below illustrates and explains a bathroom television device as a waterproof electronic device for embodying the technical idea of the present invention, and the present invention is specified to this bathroom television device. The present invention is not intended and can be applied equally to other waterproof electronic devices without departing from the technical idea shown in the claims.

  The bathroom television apparatus 10 of an Example is demonstrated with reference to FIGS. 1 is an external perspective view of the bathroom TV apparatus 10 as viewed from obliquely upward, FIG. 2 is a front view and a right side view of the bathroom TV apparatus 10, FIG. 3 is a rear view of the bathroom TV apparatus 10, and FIG. FIG. 5 is an enlarged view of a portion V in FIG. 4, FIG. 6 is a sectional view taken along line VI-VI in FIG. 2, and FIG. FIG. 8 is an enlarged view showing a state in which the mounting bracket is removed from the drain outlet, and FIG. 8 is an enlarged view of a portion VII in FIG. 6 showing a state in which the mounting bracket is attached to the drain outlet.

  The bathroom television apparatus 10 includes a first housing 100 and a second housing 200. The first housing 100 includes an upper plate 110, a lower plate 120, a left side plate 130, a right side plate 140, and a rectangular front plate 150, and an electronic circuit can be accommodated in an accommodation space surrounded by these five surfaces. Configured. Moreover, the front plate 150 has a cover glass 150A attached to the front surface, and a liquid crystal display 160 is incorporated in the center on the inner surface side of the cover glass 150A.

  In FIG. 1, speaker holes 160 are provided in the cover glass 150 </ b> A for releasing the sound of the speakers built in on both lower sides.

  In this specification, “right” means the right direction when the bathroom TV apparatus 10 is viewed from the front, that is, the front plate 150, and “left” refers to when the bathroom TV apparatus 10 is viewed from the front. Means the left direction. The “width” refers to the left-right direction when the bathroom TV apparatus 10 is viewed from the front, and the “length” refers to the front-rear direction when the bathroom TV apparatus 10 is viewed from the front.

  The second housing 200 includes an upper plate 210, a lower plate 220, a left side plate 230, a right side plate 240, and a rectangular back plate 250, and accommodates an electronic circuit in an accommodation space surrounded by these five surfaces. The width and height of the first housing 100 are dimensions that substantially correspond to the width and height of the second housing 200, but the second housing 200 is slightly smaller. They are combined with each other in a manner to receive the second housing 200. That is, the front plate 150 of the first housing 100 and the back plate 250 of the second housing 200 face each other so as to be parallel to each other, and the upper plate 110, the lower plate 120, the left side plate 130, the right side of the first housing 100 The first housing 100 and the second housing 200 are combined in such a manner that the upper plate 210, the lower plate 220, the left side plate 230, and the right side plate 240 of the second housing 200 overlap each other inside the plate 140. A housing space for housing the electronic circuit is configured.

  In the present embodiment, the case where the first housing 100 and the second housing 200 are rectangular has been described, but the present invention is not limited to this, and polygons, circles, ellipses, and other shapes are employed. be able to.

  In the first housing 100, a plurality of screw receiving portions 151 are arranged at equal intervals along the upper plate 110, the lower plate 120, the left plate 130, and the right plate 140 on the inner surface 150 </ b> B of the front plate 150. In the embodiment, seven screw receiving portions 151 are provided in a portion along the upper plate 110. That is, one is formed near the left and right ends and one at the center, two screw receivers 151 are formed between the right end and the center, and two screw receivers 151 are formed between the center and the left end. The screw receiving portion 151 includes a cylindrical portion 151A protruding rearward from the inner surface 150B and a bottomed screw receiving hole 151B formed from the top of the cylindrical portion 151A toward the front.

Below the screw receiving portion 151 formed along the upper plate 110, above the screw receiving portion 151 formed along the lower plate 120, and on the right side (inside) of the screw receiving portion 151 formed along the left plate 130. A packing mounting portion 152 is provided on the left side (inside) of the screw receiving portion 151 formed along the right side plate 140. The packing mounting portion 152 is formed so as to surround the inside of the screw receiving portion 151 all around. The packing mounting portion 152 includes an outer peripheral side wall 152A and an inner peripheral side wall 152B, and a packing mounting groove 152C formed between the outer peripheral side wall 152A and the inner peripheral side wall 152B. The packing mounting portion 152 has a C-shaped cross section when viewed from the right side.

  The packing placement portion 152 is provided so that a valley is not formed below the screw receiving portion 151 along the upper plate 110. In this embodiment, the packing mounting portion 152 is formed in a straight line and in parallel. In the present embodiment, the case where the packing mounting portion 152 is formed linearly and in parallel in the portion along the upper edge of the first housing 100 is described, but the present invention is not limited to the above. In other shapes, for example, an inclined linear or curved shape in which one of the left and right sides of the packing mounting portion 152 is high and the other side is low, or a central portion or other part is high and both left and right ends are low. Corresponding to the lowest part, which is a valley-like polygonal line or curved line, or a valley-shaped polygonal line or curved line in which the central part or other part is lowered and the left and right ends are raised. The shape may be such that a drain outlet is provided. In this case, a valley is not formed immediately below the screw receiving portion 151.

  Among the packing placement portions 152, those provided at positions along the lower plate 120, the left side plate 130, and the right side plate 140 are not necessarily linear, and the board shape of the electronic circuit accommodated in the accommodating space or other A curved portion or the like may be included depending on the structure.

  The back plate 250 of the second housing 200 is provided with a screw insertion hole 251 at a position corresponding to the screw receiving portion 151 provided in the first housing 100. In the embodiment, seven screw insertion holes 251 are provided in a portion along the upper plate 210. That is, two screw insertion holes 251 are formed between the right end and the central portion, and two screw insertion holes 251 are formed between the central portion and the left end, one near the left and right ends and at the central portion.

  The screw insertion hole 251 includes a bottomed recess 251A provided at the above-described position on the outer surface 250B of the back plate 250, a protrusion 251B protruding forward from the inner surface 250A of the back plate 250, and a protrusion 251B from the bottom of the recess 251A. Is formed from a through hole 251C that accepts the screw 400.

  In the second housing 200, a packing restrainer 260 is provided on the inner surface 250 </ b> A of the back plate 250 at a position corresponding to the packing placement groove 152 </ b> C of the packing placement portion 152 provided on the inner surface 150 </ b> B of the first housing 100. . The packing restrainer 260 corresponds to the packing placement portion 152 and is arranged so as to surround the inner perimeter of the upper plate 210, lower plate 220, left side plate 230, and right side plate 240 of the back plate 250 over the entire circumference. Projecting forward from 250A.

  The packing restrainer 260 is formed in a straight line and in parallel with the packing placement portion 152 at a position along the upper plate 210. In the present invention, the packing restrainer 260 is not limited to the above, and may be provided in another position shape corresponding to the packing placement portion 152. For example, an inclined linear or curved shape in which one of the left and right sides of the packing restraint 260 is high and the other side is low, or a mountain-shaped broken line shape in which the central part or other part is high and both left and right ends are low Or a curved line, or a valley-shaped broken line or a curved line in which the central part or other part is lowered and the left and right ends are raised, and a drain outlet described later is provided at the lowest part. There may be.

A drain outlet 253 is provided at the same height as the upper surface of the packing restrainer 260 in the upper part of the back plate 250 of the second housing 200. In the embodiment, the drainage ports 253 are provided between the screw insertion holes 251 at both the left and right ends of the position along the upper plate 210 and the screw insertion holes 251 positioned at the inside thereof, and between the screw insertion holes 251 at the center and both the left and right sides thereof. It is formed between the screw insertion hole 251. Except for the upper edge 254 of the back plate 250, a polygonal recess 252 that is recessed forward is formed at these positions. A packing restrainer 260 is formed inside the upper end of the recess 252. A drain port 253 is formed between the upper end portion of the recess 252 and the upper edge portion 254. Accordingly, the drain outlet 253 is formed to face downward behind the packing restraint 260. The surface formed by the upper surface of the packing restraint 260 and the opening edge of the drain outlet 253 is located at the same height.

  A cable connection portion 270 is provided at the center of the outer surface 250B of the back plate 250 of the second housing 200. The cable connection portion 270 is formed as a circular opening. The cable 600 is connected to the cable connecting portion 270 using a waterproof connector 610 or the like. The cable 600 is used to transmit and receive a video signal for displaying an image on the liquid crystal display 160 and a control signal for driving an electronic circuit that controls the liquid crystal display 160. It is connected to a tuner or the like installed at a location different from the bathroom through a not shown).

  Further, a recess 280 is provided in the lower part of the back plate 250 of the second housing 200, and a locking hole 290 is provided in the lower end portion of the back plate 250. The locking hole 290 receives a locking claw 520 of the mounting bracket 500 described later.

  The packing 300 is a ring-shaped member made of natural rubber or synthetic rubber, and its cross-sectional shape is rectangular or elliptical. Or you may employ | adopt the thing of other geometric cross-sectional shapes, such as L shape and U shape, as needed.

  The screw 400 is a generally used male screw, and is screwed into the screw receiving portion 151 through a screw insertion hole 251 provided in the back plate 250 of the second housing 200, whereby the first housing 100. And the second housing 200 is firmly fixed.

  The mounting bracket 500 includes a metal flat plate portion 510 having a slightly smaller width and height than the back plate 250 of the second housing 200. By making the flat plate portion 510 smaller than the back plate 250, when the bathroom TV apparatus 10 is fixed to the bathroom wall surface or the like with the mounting bracket 500, the mounting bracket 500 protrudes outward from the bathroom TV apparatus 10 vertically and horizontally. No aesthetics can be improved.

  A locking claw 520 is formed at the lower end of the mounting bracket 500. The locking claw 520 includes a protruding portion 521 that is bent forward from the flat plate portion 510 and a locking portion 522 that is bent in a “<” shape at the tip thereof, and the locking hole 290 of the second housing 200. Is inserted and locked.

  The upper end of the mounting bracket 500 is provided with a locking portion 530 at a portion corresponding to the positions of the above-described recess 252 and drain outlet 253. The locking portion 530 includes a first bent portion 531 bent forward from the upper end of the flat plate portion 510, a first extended portion 532 extended forward from the first bent portion 531, and upward from the first extended portion 532. A second bent portion 533 bent toward the upper side, and a second extended portion 534 extended further upward from the second bent portion 533.

  An opening 540 is provided in the center of the mounting bracket 500, and the cable 600 and the waterproof connector 610 can be passed therethrough.

Mounting holes 550 are provided at the four corners of the mounting bracket 500, and the mounting bracket 500 can be fixed to a wall surface of a bathroom or the like by fixing means such as a screw 700. This mounting hole 5
50 is formed at a position corresponding to a recess 252 provided on the back plate 250 of the second housing 200 on the upper side of the mounting bracket 500, and 50 of the back plate 250 of the second housing 200 on the lower side of the mounting bracket 500. It is provided at a position corresponding to the depression 280 provided in the lower part. By forming the mounting holes 550 at positions corresponding to the recesses 252 and 280, the head portion 710 of the screw 700 can be accommodated in the recesses 252 and 280 of the back plate 250 of the second housing 200. It is possible to fix the outer side surface 250B, the mounting bracket 500, and the wall surface of the bathroom in close contact with each other.

  Next, assembly of the bathroom TV device 10 described above and attachment to the bathroom wall surface will be described. The packing 300 is inserted into the packing mounting portion 152 provided on the inner surface 150B of the front plate 150 of the first housing 100. Then, the packing 300 is accommodated in the packing mounting groove 152C between the outer peripheral side wall 152A and the inner peripheral side wall 152B of the packing mounting portion 152.

  Next, the first housing 100 and the second housing 200 are combined. That is, the upper plate 210 of the second housing 200 is fitted directly below the upper plate 110 of the first housing 100, and the lower plate 220 of the second housing 200 is fitted directly above the lower plate 120 of the first housing 100. Then, the housings are combined such that the left side plate 230 and the right side plate 240 of the second housing 200 are fitted inside the left side plate 130 and the right side plate 140 of the first housing 100, respectively. At this time, the top of the screw receiving portion 151 provided on the inner surface 150B of the first housing 100 and the top of the protruding portion 251B provided on the inner surface 250A of the second housing 200 come into contact with each other to penetrate the screw receiving hole 151B. The central axes of the holes 251C coincide.

  At this time, the packing restrainer 260 provided on the inner surface 250A of the back plate 250 is inserted into the packing placement groove 152C of the packing placement portion 152 and contacts the rear portion of the packing 300 placed in the packing placement groove 152C. To do.

  Next, the screw 400 is inserted into the screw receiving hole 151B of the screw receiving portion 151 from the rear through the through hole 251C of the screw insertion hole 251 and screwed. Then, the seat surface of the screw 400 comes into contact with the bottom of the recess 251 </ b> A of the screw insertion hole 251 to generate a biasing force that couples the second housing 200 to the first housing 100. Accordingly, the packing restraint 260 compresses the rear portion of the packing 300 toward the front, and the packing 300 is compressed in a space surrounded by the packing placement groove 152C of the packing placement portion 152 and the packing restraint 260, and the packing placement portion. It is sealed so that moisture and the like do not enter the storage space inside 152 and the packing restraint 260.

  Next, the mounting bracket 500 is fixed to a bathroom wall surface (not shown). This is done by attaching the mounting hole 550 to the bathroom wall surface and screwing the screw 700 to the bathroom wall surface from the front side of the mounting bracket 500. Further, the cable 600 is wired so as to penetrate the bathroom wall surface, and the waterproof connector 610 is connected to the cable connection portion 270.

  Further, the locking portion 530 of the mounting bracket 500 is locked to the drain port 253. That is, the second extending portion 534 of the locking portion 530 is inserted into the drain port 253 and locked to the inner surface side of the upper edge portion 254 of the back plate 250 of the second housing 200. Then, the head portion 710 of the screw 700 attached to the attachment hole 550 of the attachment fitting 500 is accommodated in the recess 252. The locking claw 520 provided at the lower end of the mounting bracket 500 is inserted into the locking hole 290 provided at the lower end of the back plate 250 of the second housing 200 and locked. Thereby, the bathroom TV apparatus 10 is fixed to the bathroom wall surface.

As described above, in the bathroom television apparatus 10 of the present embodiment, below the screw receiving portion 151 and the screw insertion hole 251 for receiving the screw 400 for fixing the first housing 100 and the second housing 200 to each other. The packing mounting portion 152 is horizontally and linearly arranged in the vicinity of the upper portions of the first housing 100 and the second housing 200. In accordance with this, the packing 300 and the packing holder 260 are also arranged horizontally and linearly. Accordingly, moisture or liquid that has entered the region from the vicinity of the boundary between the first housing 100 and the second housing 200 to the packing 300 stays at any location above the packing placement portion 152 and above the packing restraint 260. Therefore, it can be easily discharged from the drain outlet 253.

  In the present embodiment, as described above, the case where the packing mounting portion 152 and the packing restraint 260 are arranged horizontally and linearly has been described. However, the present invention is not limited to this, and one of the left and right is high. The other may be a straight line with a low slope or a curved line, or may be a polygonal line or a curved line in which both the left and right sides are low and one of the central portions is high. In that case, by providing the drainage port 253 at the lowest part of the packing restraint 260, the moisture and liquid that have entered the packing placement part 152 and the packing restraint 260 above the packing placement part 152 and the packing restraint 260 above. It becomes possible to discharge easily from the drain outlet 253 without staying in any of these locations.

  Furthermore, the shape of the packing mounting part 152 and the packing restraint 260 may be a polygonal line shape or a curved shape in which the left and right sides are high and any one of the central portions is low. In that case, by providing the drainage port 253 at the lowest part of the packing holder 260, moisture and liquid that have entered the packing mounting part 152 and the packing holder 260 above the packing mounting part 152 and the packing holder 260. It becomes possible to discharge easily from the drain outlet 253 without staying in any place. In that case, the lowest place of the packing placement part 152 and the packing restraint 260 is prevented from being located immediately below the screw receiving part 151 and the screw insertion hole 251.

DESCRIPTION OF SYMBOLS 10 Bathroom television apparatus 100 1st housing 110 Upper board 120 Lower board 130 Left board 140 Right board 150 Front board 151 Screw receiving part 151A Cylindrical part 151B Screw receiving hole 152 Packing mounting part 152A Outer side wall 152B Inner side Side wall 152C Packing mounting groove 160 Liquid crystal display 200 Second housing 210 Upper plate 220 Lower plate 230 Left side plate 240 Right side plate 250 Back plate 251 Screw insertion hole 252 Depression 253 Drainage port 254 Upper edge portion 260 Packing restraint 270 Cable connection portion 280 Recess 290 Locking hole 300 Packing 400 Screw 500 Mounting bracket 510 Flat plate part 520 Locking claw 521 Projection part 522 Locking part 530 Locking part 531 First bending part 532 First extension part 533 Second bending part 534 Second extension Exit 540 Opening 5 0 mounting holes 600 cable 610 waterproof connector

Claims (6)

A waterproof electronic device in which a housing space hermetically sealed is formed by combining a first housing and a second housing from the front-rear direction with a packing interposed therebetween, and an electronic circuit is housed in the housing space Because
The first housing includes a fastening member receiver that receives a fastening member that fixes the first housing and the second housing to each other along at least an upper edge of the first housing, and at least a lower portion of the packing below the fastening member receiver. A packing mounting portion for receiving the packing so that no valley is formed in the
The second housing corresponds to a packing member insertion hole through which the fastening member is inserted at a position corresponding to the fastening member receiver, thereby achieving fastening with the first housing, and the packing mounting portion. A packing restrainer that maintains the housing space in a sealed state by pressurizing the packing placed on the packing placement portion when the first and second housings are assembled from the front and rear directions. A drain outlet formed at the same height as the packing restrainer,
A waterproof electronic device characterized in that the liquid that has entered above the packing is discharged from the drain port.   The waterproof electronic device according to claim 1, wherein the packing placement portion is provided linearly at least below the fastening member receiver.   The waterproof electronic device according to claim 2, wherein the packing placement portion is provided horizontally at least below the fastening member receiver.   The waterproof electronic device according to claim 1, wherein the drain port opens downward.   The waterproof electronic device includes a mounting bracket for fixing the second housing to a building, and the mounting bracket is attached to the waterproof electronic device by being locked to the drain port. The waterproof electronic device according to claim 1. The waterproof electronic device according to claim 1, wherein a display device is incorporated in the first housing.

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