JPS6230729Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a waterproof structure for a portion penetrated by various tubes used in, for example, outdoor electronic billboards, advertising towers, etc.

Conventionally, there have been devices of this type as shown in FIGS. 1 and 2. In the figure, 1 is a box that houses a plurality of tubes 2 attached to a substrate 3, 4 is a through hole formed in the box 1 and through which the tubes 2 are passed;
5 is a ring-shaped packing guide formed concentrically with the through hole 4; 6 is a packing guided by the packing guide 5 and fitted to prevent water from entering from the outer periphery of the bulb 2; , for example, use an O-ring or the like. Reference numeral 7 indicates a holding plate in which a through hole 8 for the tube bulb 2 is formed and holds down the gasket 6; 9 indicates a through hole 10;
A front plate 11 is formed to prevent wind and rain from entering from the front side, and numeral 11 is a draining member that cuts off raindrops etc. that enter through the through hole 10 of the front plate 9.

Since the conventional type is constructed as described above, it has had the disadvantage that a draining member must be prepared separately and inserted into the tube near the top plate, which makes it difficult to work and requires a large number of parts.

This invention was made to eliminate these drawbacks, and provides a tube that improves workability by omitting the draining member by forming the draining part integrally with the outer periphery of the tube. be.

An embodiment of this invention will be described below based on the drawings. In FIG. 3, reference numerals 1 to 10 have the same structural functions as those in FIG. 2, and therefore their explanations will be omitted. Reference numeral 12 denotes a draining portion that is formed integrally with the outer periphery of the bulb 2 and has a bowl-shaped recess 12a facing toward the tip. This draining portion 12 prevents raindrops from entering through the through hole 10 of the top plate 9.

As described above, according to this invention, since the draining portion near the top plate is formed integrally with the outer periphery of the tube, the workability is improved and the number of parts is reduced.

[Brief explanation of the drawing]

Figure 1 is an assembled side sectional view showing a conventional tube installed, Figure 2 is a partially sectional side view showing the main parts of Figure 1, and Figure 3 is an example of this invention. FIG. 2 is a cross-sectional side view of a main part of the tube according to the embodiment. In the figure, 1 is a board, 2 is a tube, 6 is a packing, 9
is the top plate, 10 is the penetration part, 12 is the draining part, 12a
is a recess. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) It is cylindrical and is held on the substrate in a protruding state from the substrate, and the vicinity of the tip of the protrusion penetrates the top plate, and the vicinity of the top plate penetration part What is claimed is: 1. A tube having a drain section, characterized in that the drain section is formed integrally with an outer periphery. (2) The tube according to claim 1 of the utility model registration, characterized in that the draining portion is formed with a bowl-shaped recess facing the tip of the protruding portion.