JPS6134543Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ventilation hole part that can be suitably attached to a ventilation hole of an internally illuminated plastic signboard or the like.

As is well known, internally illuminated plastic signboards require ventilation holes to prevent deformation due to internal lighting equipment or heat from direct sunlight. ventilation hole 1
01 was generally provided on the signboard frame 102.

However, when the ventilation holes 101 made with shutters are opened wide to improve ventilation efficiency, in order to prevent the plastic display surface 103 from getting dirty due to entry of insects, etc.
There is the hassle of having to attach an insect screen to the back side of the ventilation hole 101, and when using a reinforced frame with ribs to increase the strength of the frame, the ribs get in the way and it is difficult to process the shutters. Therefore, no ventilation holes 101 were provided at all.

In addition, such internally illuminated plastic signs are
Signboard frame 102 and plastic display surface 103
Because rainwater enters through the gap between the mounting part and the ventilation hole 101 mentioned above, a perforated hole 104 for ventilation and drainage with a diameter of about 10 to 15 mm is provided in the lower frame of the signboard frame 102. drill hole 1
04, the entry of insects is unavoidable, but if you stick an insect screen on the back side of the drill hole 104, the drainage surface will be raised by the thickness of the insect screen and the adhesive, so rainwater will drain away from the bottom frame. This accumulated rainwater caused problems such as staining the lower part of the plastic display surface 103, degrading the adhesive, and causing the insect screen to peel off.

The present invention was devised in view of the above circumstances, and aims to provide a ventilation hole component that has both insect-proofing properties and drainage properties, and is easy to install.

Hereinafter, the present invention will be explained in detail with reference to examples. Fig. 1 is a plan view of one embodiment of the ventilation hole component of the present invention, Fig. 2 is a central vertical sectional view of the same embodiment, and Fig. 3 is a perspective view of an internally illuminated plastic signboard to which the same embodiment is attached. As shown in FIGS. 1 and 2, the ventilation hole component of the present invention is equipped with an insect screen 2 in the cylindrical hole of a frame tube 1, and can be easily and easily fixed by integrally molding it with synthetic resin, for example. It can be mass-produced at low cost.

The frame tube 1 has a flange 12 on one open end 11 and a convex portion 13 on the outer surface, and when installed by inserting the frame tube 1 into the ventilation hole 3 from the other open end 14, ventilation is achieved. The hole edge 31 of the hole 3 is fitted between the flange 12 and the convex portion 13, and in order to facilitate insertion of the frame tube 1, a plurality of holes are inserted from the other open end 14 of the frame tube 1. The grooves 15 are formed at equal angular intervals so that the frame cylinder 1 is elastically bent inward during insertion. And this frame cylinder 1
In order to facilitate bending, an auxiliary guide protrusion 16 is further provided on the outer surface of the frame cylinder 1 from the protrusion 13 to the other open end 14.

These convex portions 13 and guide auxiliary convex portions 16 are
Both have a right triangular cross-sectional shape that increases in height as they approach one open end 11 of the frame tube 1, and the guide auxiliary protrusion 16 is formed slightly lower than the protrusion 13. . When the frame cylinder 1 is inserted into the ventilation hole 3, the hole edge 31 first hits the slope of the auxiliary guide convex part 16, and the force in the insertion direction is divided in the centripetal direction by this slope, and the frame cylinder 1 is elastically bent inward, and when it is further inserted, the hole edge 31 hits the slope of the convex part 13, and a similar force is applied to bend the frame cylinder 1 more. When the air passes through the ventilation hole 3, the frame tube 1 elastically returns to its original state, and the hole edge 31 connects the convex portion 13 and the collar portion 1 as described above.
2, and thereby the frame cylinder 1 is connected to the ventilation hole 3.
It is installed with the ability to fall off. In this embodiment, these convex portions 13 and the guide auxiliary convex portion 16 are
are provided all over the outer circumference of the frame tube 1 except for the part where the groove 13 is formed, but it goes without saying that they may be provided partially. In addition, regarding its shape, if it is a shape that allows it to easily pass through the ventilation hole 3 in the direction of insertion, but is difficult to pass through in the direction of removal, it may have a right triangular cross-section as in the example. There are no limitations.

The grooves 15 are for bending the frame cylinder 1 inward to make it easier to insert as described above, but they also function as drainage grooves. That is, as will be described later, the ventilation hole component of the present invention can also be attached to a ventilation hole formed in the lower frame of a signboard frame, but in that case, if there is no split groove 15,
As shown in FIG. 2, the rainwater that has entered the inside of the signboard accumulates by the height from the lower frame part 1021 of the signboard frame to the other open end 14 (opening upper end) of the frame tube 1. However, if there is a groove 15, rainwater will flow into the frame tube 1 through the groove 15, pass through the mesh 21 of the insect screen 2, and enter the open groove 1 on one side of the frame tube 1.
1 (at the bottom of the opening), rainwater no longer accumulates. Therefore, in order to prevent rainwater from accumulating at all, it is necessary to extend the groove 15 from the other open end 14 of the frame cylinder 1 to the position where it contacts the hole edge, that is, below the upper surface (inner surface) of the lower frame portion 1021 of the signboard frame. It is essential to form it up to the point. In this embodiment, the dividing groove 15 is connected to the other open end 14 of the frame cylinder 1.
By forming the insect screen 2 from the insect screen 2 near one open end 11, drainage is ensured and the frame tube 1 can be easily bent inward during insertion. Note that the groove 15 is connected to the convex portion 13.
If you only want to form it to a point that exceeds
Since the bending of the frame cylinder 1 becomes smaller, it becomes difficult to insert it, but even in that case, since the convex part 13 itself can be elastically deformed a little, it can be easily attached by inserting it firmly.

On the other hand, the insect screen 2 is attached to one open end 11 of the frame cylinder 1.
It is provided integrally with the cylinder hole on the side, and is equipped with a fine mesh 21 that can prevent insects from entering. In this embodiment, the insect repellent net 2 has a rectangular mesh 21 of about 2 mm on each side, but the shape and size of the mesh can be changed as appropriate.

The ventilation hole parts of the present invention as described above can be used, for example, in the third part.
As shown in the figure, the side frame part 1022 and the bottom frame part 1 of the sign frame 102 of the internally illuminated plastic signboard are shown in FIG.
021 Furthermore, it is inserted from the other open end of the frame cylinder into the ventilation hole bored in the upper frame part 1023 etc., and the collar part 12 is located on the front side of the signboard frame 102 and covers the edge of the ventilation hole. By simply inserting the ventilation hole 3 in this manner, the hole edge 31 of the ventilation hole 3 fits between the flange 12 and the convex portion 13 as shown in FIG. When producing a signboard, the number of attachments can be freely selected according to the material and hue of the signboard, and there is no need for any adhesive, making the installation work easy. Furthermore, since the frame cylinder 1 is provided with a plurality of grooves 15 that also serve as drainage channels, it is easy to insert the signboard and there is no risk of rainwater accumulating inside the signboard. Because insects get inside the signboard and the display surface 103
There will be no need to contaminate the area. As described above, the present invention has remarkable effects and is extremely useful.

It goes without saying that the ventilation hole component of the present invention can be installed in various ventilation holes other than the ventilation hole of a signboard, and it is also possible to make design changes such as configuring the frame tube 1 into a square tube. This is included in the present invention.

[Brief explanation of drawings]

Fig. 1 is a plan view of one embodiment of the ventilation hole component of the present invention, Fig. 2 is a central vertical sectional view of the same embodiment, Fig. 3 is a perspective view of an internally illuminated plastic signboard to which the same embodiment is attached, FIG. 4 is a perspective view of an internally illuminated plastic sign with shuttered ventilation holes. Explanation of main symbols in the drawings, 1... Frame cylinder, 11...
One opening end, 12... Flange portion, 13... Convex portion, 1
4...Other opening end, 15...Divide groove, 16...Auxiliary protrusion for guide, 2...Insect screen, 3...Ventilation hole,
31...pore edge.

Claims (1)

[Scope of utility model registration request] A flange is provided at one open end of the frame, and a convex portion is provided on the outer surface of the frame, so that when the frame is inserted into the ventilation hole from the other open end and installed, the flange and convex portion An insect screen is configured so that the edge of the ventilation hole fits between the holes, and an insect screen is provided in the hole near one opening end of the tube frame, and an insect screen is provided that extends from the other open end of the tube frame to a position where it touches the edge of the hole. A ventilation hole component with multiple grooves formed.