JP6038358B2 - Waterproof structure - Google Patents

Description

  The present invention relates to a waterproof structure for preventing water from being applied to a substrate housed in a casing of an electronic device.

  In the electronic device of Patent Document 1, in order to prevent water droplets falling on the top surface of the electronic device casing from above and moisture accumulated on the top surface from entering the inside of the housing, water introduction means is provided on the top surface. It was.

  In the electronic device according to Patent Document 2, in order to guide the water inside the electronic device casing to the drain hole of the bottom wall of the casing, a case side guide rib and a cover side guide rib are provided on the side wall of the casing.

JP 2010-56447 A JP 2004-96968 A

  If there is a hole in a component arranged above the substrate of the electronic device, water may enter from the hole due to condensation or the like, and the substrate may be short-circuited by water. However, in the structure of Patent Document 1, there is no means for guiding water that has entered the inside of the casing. In the structure of Patent Document 2, water that enters through the hole and propagates inside the top surface of the casing is guided. Since there is no means, there is a problem that it is not possible to prevent water that has entered the housing from the hole above the substrate from being applied to the substrate.

  The present invention has been made to solve the above-described problems, and it is an object of the present invention to prevent water that has entered the housing from a hole above the substrate from being applied to the substrate.

  The waterproof structure according to the present invention is in an electronic device in which a hole is opened at a position off the projection surface of the substrate on the top surface of the housing in which the substrate is accommodated, and has entered the housing from the hole. It prevents water from splashing on the substrate, and projects downward from the projection surface of the substrate toward the hole on the top surface of the housing, and enters the inside of the top surface through the hole. A first convex part that drops in front of the substrate, an inclined surface that is disposed in the housing, has a high hole side and a low substrate side, and protrudes upward from the inclined surface, avoiding the substrate from water that travels on the inclined surface. And a second convex portion that leads in the direction.

  According to this invention, the water that has traveled from the hole opened in the top surface of the housing to the inside of the top surface and dropped to the inclined surface by the first convex portion flows from the inclined surface to the second convex portion and is guided in a direction to avoid the substrate. As a result, it is possible to prevent water that has entered the housing from the hole above the substrate from being applied to the substrate.

It is a perspective view which shows the structure of the display apparatus for ceiling suspension to which the waterproof structure which concerns on Embodiment 1 of this invention is applied. It is a perspective view which shows the state which removed the design panel and the remote controller from the display apparatus for ceiling suspensions of FIG. FIG. 3 is a B arrow view of the ceiling-mounted display device of FIG. 2. It is a perspective view which shows the state which removed the top | upper surface sheet metal from the ceiling-suspended display apparatus of FIG. It is sectional drawing which cut | disconnected the display apparatus for ceiling suspensions of FIG. 3 along CC line. FIG. 3 is a B arrow view of the ceiling-mounted display device of FIG. It is an enlarged view in the frame line E of FIG. It is the projection figure seen from the arrow B of FIG. 2 for demonstrating the length of a 1st convex part and a 2nd convex part. It is a perspective view which shows the modification of the waterproof structure which concerns on Embodiment 1. FIG.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
As shown in FIG. 1, the ceiling-mounted display device 1 includes a monitor 2 that can be opened and closed in the direction of arrow A, and a housing 3 that is fixed to the ceiling. When the ceiling-mounted display device 1 is used, the monitor 2 is opened to the state shown in FIG. 1 to expose the monitor screen 2a, and when not used, the monitor 2 is housed in the housing 3.

  FIG. 2 is a perspective view showing a state in which the design panel 4 and the remote controller 5 are removed from the ceiling-suspended display device 1. The housing 3 is composed of a design panel 4, a top plate 6, and a housing body 7, and a remote controller 5 for operating the ceiling-suspended display device 1 can be removed from the housing body 7. is set up. In the ceiling-suspended display device 1 attached to the ceiling of an automobile or the like, the top sheet metal 6 side faces upward and the design panel 4 side faces downward.

3 is a perspective view of the ceiling-suspended display device 1 as viewed from the arrow B in FIG. 2, and FIG. 4 is a perspective view of the housing body 7 exposed by removing the top plate 6.
In order to maintain the state where the ceiling-suspended display device 1 is fixed to the ceiling, a strong sheet metal part is used for the top sheet metal 6. When forming the shape of the top sheet metal 6 from the sheet metal part, the hole 6a is inevitably opened in the sheet metal, and water such as condensation on the ceiling may enter the inside of the housing 3 from the hole 6a. In the illustrated example, since the claw that engages with the housing 3 is formed on the top plate 6, the hole 6 a is opened. If water that has entered from the hole 6a is applied to the substrate 8, the worst substrate 8 will be short-circuited and will not function. In order to prevent this, a waterproof structure that restricts the flow of water is provided between the hole 6 a of the top sheet metal 6 and the substrate 8.

FIG. 5 is a cross-sectional view of the ceiling-suspended display device 1 of FIG. 3 cut along the line CC. FIG. 6 is a view as viewed from arrow B of the ceiling-suspended display device 1 of FIG. 2 and shows a state where the top plate 6 is removed. FIG. 7 is an enlarged view in the frame E of FIG.
Hereinafter, the details of the waterproof structure will be described with reference to FIGS.

Assuming that the surface of the top sheet metal 6 on which the substrate 8 is projected is a substrate projection surface 8a (shown in FIG. 3), the first convex portion 6b is located below the substrate projection surface 8a on the hole 6a side. It protrudes toward you.
On the other hand, in the housing body 7 facing the top plate 6, an inclined surface 7 a is formed between the hole 6 a and the substrate 8, the hole 6 a side being high and the substrate 8 side being low. Further, on the inclined surface 7a, on the front side of the substrate 8, a second convex portion 7b is provided so as to protrude upward.

As indicated by an arrow D in FIG. 5, the water that enters from the hole 6 a and travels along the inner surface of the top sheet metal 6 falls at the first convex portion 6 b, so that it can be prevented from being applied to the substrate 8. Further, as indicated by an arrow F in FIG. 7, the water that has dropped from the first convex portion 6b to the inclined surface 7a flows along the inclination to the second convex portion 7b and avoids the substrate 8 by the second convex portion 7b. Therefore, it is possible to prevent the substrate 8 from being applied.
In addition, the top surface sheet metal 6 side is also provided with an inclined surface 6c that descends downward from the hole 6a toward the first convex portion 6b, so that water that has entered from the hole 6a is guided to the first convex portion 6b. Also good.

The shape of the 2nd convex part 7b may be any shape as long as it can guide the water which passes along the inclined surface 7a in the direction which avoids the board | substrate 8. FIG.
Here, in order to explain an example of the shape of the 2nd convex part 7b and the 1st convex part 6b, the projection figure seen from the arrow B of FIG. 2 is shown in FIG. The water intrusion path can take a region G formed by a line connecting the hole 6 a and the substrate 8. Therefore, the 2nd convex part 7b should just be made the length which fills this field G at least. Preferably, the second protrusion 7b may be a ridge or the like longer than the substrate 8 so that water can be reliably prevented. Similarly, the first convex portion 6b may also have a length that covers at least the region G, and is preferably longer than the substrate 8.

  Or you may form in the mountain shape which makes the hole 6a side the vertex which surrounds the area | region G like the 2nd convex part 7b shown in FIG.

  Further, a water drain hole 7c is provided in each portion where water finally accumulates, that is, each end portion of the second convex portion 7b, and water is discharged from the housing body 7 containing the substrate 8 to the design panel 4 side. It may be structured.

  As described above, according to the first embodiment, the waterproof structure of the ceiling-suspended display device 1 is provided so as to protrude downward from the board projection surface 8a to the hole 6a side in the top sheet metal 6 of the housing 3, 1st convex part 6b which infiltrates from 6a and falls along the inside of the top | upper surface sheet metal 6 to the front of the board | substrate 8, and the inclined surface which is arrange | positioned inside the housing | casing 3 and the hole 6a side is high and the board | substrate 8 side is low 7 a and a second convex portion 7 b that protrudes upward from the inclined surface 7 a and guides water that travels along the inclined surface 7 a in a direction that avoids the substrate 8. For this reason, water that has traveled from the hole 6a opened in the top plate 6 to the inside of the top plate 6 and dropped to the inclined surface 7a by the first convex portion 6b flows from the inclined surface 7a through the second convex portion 7b to the substrate. 8 can be prevented from being applied to the substrate 8.

  Moreover, according to Embodiment 1, since the 2nd convex part 7b was made into the protruding item | line longer than the edge which opposes the 2nd convex part 7b of the board | substrate 8, the flooding to the board | substrate 8 can be prevented more reliably. .

  Moreover, according to Embodiment 1, the inclined surface 6c which falls below is formed inside the top | upper surface sheet metal 6 as it goes to the 1st convex part 6b side from the hole 6a side. For this reason, the water traveling inside the top sheet metal 6 can be guided to the first convex portion 6b, and the substrate 8 can be more reliably prevented from being wet.

  Further, in the first embodiment, the example in which the waterproof structure according to the present invention is applied to the ceiling-mounted display device 1 that is used by being attached to the ceiling of an automobile or the like has been described. However, the present invention is not limited to this. It can be applied to typical electronic devices.

  In addition, within the scope of the invention, the present invention can be modified with any component of the embodiment or omitted with any component of the embodiment.

  As described above, the waterproof structure according to the present invention prevents the water entering the inside of the housing from entering the housing from the hole opened at the position away from the projection surface of the substrate on the top surface of the housing. It is suitable for a waterproof structure used for a ceiling-mounted display device or the like in which water such as condensation on the ceiling easily enters the inside of the housing from the hole.

  DESCRIPTION OF SYMBOLS 1 Ceiling-mounted display apparatus, 2 monitor, 2a monitor screen, 3 housing | casing, 4 design panel, 5 remote controller, 6 top plate, 6a hole, 6b 1st convex part, 6c inclined surface, 7 housing body, 7a Inclined surface, 7b 2nd convex part, 7c Drain hole, 8 board | substrate, 8a board | substrate projection surface.

Claims (4)

In the electronic device in which a hole is opened at a position off the projection surface of the substrate on the top surface of the housing containing the substrate inside, water that has entered the housing from the hole is applied to the substrate A waterproof structure that prevents
A first projection that projects downward from the projection surface of the substrate toward the hole on the top surface of the housing, and enters the inside of the top surface to drop the water that travels inside the top surface to the front of the substrate. A convex part,
An inclined surface disposed in the housing, the hole side is high, and the substrate side is low,
A waterproof structure, comprising: a second convex portion protruding upward from the inclined surface and guiding water traveling along the inclined surface in a direction avoiding the substrate.   2. The waterproof structure according to claim 1, wherein the second protrusion is a protrusion that is longer than an end of the substrate that faces the second protrusion.   The waterproof structure according to claim 1, wherein the inclined surface has a drainage hole opened at an end of the second convex portion.   The waterproof structure according to claim 1, wherein the electronic device is a ceiling-suspended display device in which a top surface of the housing is attached to a ceiling.

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