JPS6348894Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a rainproof device for a lighting lamp installed outdoors, such as an intercom device.

Conventional configurations and their problems In recent years, many intercom devices have cordless handsets for entrances installed on outdoor gateposts, etc., but in such devices, it is necessary to protect the lighting lights from rain, etc. Rainproof equipment is required.
As this rainproof device, for example,
As described in Publication No. 22600, a waterproof packing made of rubber or the like is generally interposed between a case that holds a lighting lamp and a lighting lamp cover that is engaged and arranged to cover the lighting lamp. be.

FIG. 1 shows an example of this, where 1 is a case that holds a tubular fluorescent lamp 2;
An engagement groove 3 is formed on the surface of the fluorescent lamp 2 so as to surround the outer periphery of the fluorescent lamp 2.

Reference numeral 4 denotes a box-shaped illumination light cover that is engaged with the case 1 so as to cover the front of the fluorescent lamp 2, and an opening is formed in the surface of the illumination light cover 4 that faces the case 1. , its opening edge is configured to be inserted into the engagement groove 3.

That is, after inserting the waterproof packing 5 into the engagement groove 3, the opening edge of the case 1 is pressed against the waterproof packing 5, and then the case 1 is inserted.
and the waterproof packing 5 are fixed using fixing devices such as screws (not shown).

Generally, when a cover is brought into close contact with a case using waterproof packing, it is necessary to fix the cover in a state in which it is pressed into contact with the waterproof packing with more than a predetermined force.

For this reason, it is undesirable to make the elastic deformation rate of the preventive packing too large.

On the other hand, when the cover and case are molded from resin, the precision is not necessarily high due to sink marks, warping, and the like that occur after molding.

In order to bring the cover and case, which have poor machining accuracy, into close contact with each other over the entire circumference through waterproof packing, it is not preferable to use waterproof packing that has a small elastic deformation rate.

As described above, this type of waterproof packing is required to have two contradictory properties.

Furthermore, when the cover is engaged and fixed in the groove formed in the case through waterproof packing,
First, insert waterproof packing into the groove,
After that, the protruding strip provided on the cover is inserted into the groove, and at this time, the prevention packing is accurately positioned at a predetermined position within the groove (the position where it contacts the inserted protruding strip). It is necessary to hold back.

For this purpose, it is sufficient to make the width of the waterproof packing slightly wider than the width of the groove, and to press fit the waterproof packing into the groove. It takes time to insert it.

In particular, when packing with a small elastic deformation rate is used, the insertion process is time-consuming.

Purpose of the invention The present invention provides a rainproof device for lighting lamps that configures the waterproof packing into a shape that more satisfies the two conflicting properties required of the waterproof packing as described above, and that is easy to install. The purpose is to

Structure of the invention In the lighting rainproof device of the invention, a groove with a plurality of protrusions formed on the side wall is provided in either the lighting cover or the main body case, and an elongated tubular hollow is formed in the groove. By inserting a packing and attaching the lighting light cover to the case by pressing this hollow packing with the protruding stripes provided on the other side of the lighting light cover and the case, rain water can be drained by using the elastic force of the hollow packing. This is to prevent the infiltration of

With this structure, it is possible to fully demonstrate the rainproof effect even when using a resin molded case or lighting light cover, and the lighting lamps and lighting tubes can be easily replaced and are highly reliable. A rainproof device is obtained.

DESCRIPTION OF EMBODIMENTS A rainproof device for a lighting lamp according to an embodiment of the present invention will be described below with reference to FIG.

In this device, as shown in FIG.
A concave groove 22 with a plurality of protrusions 28 formed on the inner wall is provided in the portion that contacts the box-shaped illumination light cover 4 having an opening on the surface facing the illumination light cover 4, and the opening edge of the illumination light cover 4 has a groove 22 formed therein. A protrusion 23 that fits into the groove 22 is provided.

The width t of the portion where this convex portion 28 is provided is determined by the cross-sectional shape and hardness of the tubular hollow packing 21 whose cross section is shown in FIG.
It is determined by taking into consideration the size, etc.

Further, the protrusion amount of the convex portion 28 is
The space between the inner wall of the groove 22 and the opposing inner wall of the groove 22 is slightly smaller than the diameter of the hollow packing 21.

When assembling, first insert the groove 22 of case 1.
Insert and store the hollow packing 21 in.

At this time, the hollow packing 21
It is held at a predetermined position within the groove 22 while being held between the inner wall of the groove 22 and the opposing inner wall of the groove 22 . Next, insert the locking claw provided at the lower end of the lighting cover 3 into the reference hole 25, and then tighten the lighting cover 3.
Insert the protrusion 23 into the groove 22, and then tighten the mounting screw 26.
The upper end is fixed and attached to the fixing fitting 27 of the case 1. At this time, when the protrusion 23 for attaching the illumination light cover 3 is inserted into the groove 22 and the hollow packing 21 is pressed, the hollow packing 21 is deformed, and the illumination light cover 3 is attached to the case 1 in a sealed state. I can do it.

Note that the groove may be provided on the illumination light cover, and the protrusion may be provided on the case.

Effects of the invention As described above, in the present invention, the lighting light cover is fixed by storing the elongated tubular hollow packing in the concave groove for attaching the lighting light cover and pressing it. The initial section where the hollow part deforms has a relatively large elastic deformation rate, and after the hollow part is pressed, the elastic deformation rate becomes small, so it is processed by resin molding, and the dimensional accuracy is not always good. A good sealing condition can be obtained even with a cover and case without a cover and a case.In addition, multiple convex parts are formed in the concave groove, and the hollow packing inserted into the concave groove only in the narrow part due to the convex parts. Since the waterproof packing is configured to be engaged and held, even waterproof packing whose width is narrower than the width of the groove can be accurately held and engaged at a predetermined position within the groove.

Therefore, since a hollow packing having a width narrower than the width of the groove can be used, the work of inserting the packing into the groove becomes easier.

Furthermore, in the present invention, since the hollow packing is intermittently held in the concave groove by the convex portions, substantially the entire hollow packing is not deformed before the protrusions are pressed against the hollow packing, and the hollow packing is not deformed as it was when it was first pressed. The characteristic of the hollow packing that the elastic deformation rate differs greatly between the latter half is not impaired, and even when pressed, the part of the hollow packing held by the convex portion deforms in its longitudinal direction, so this is especially true. The elastic deformation rate of a portion does not differ greatly from that of other portions.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional lighting rainproof device, Fig. 2 is an exploded perspective view of a lighting rainproof device of an embodiment of the present invention, and Fig. 3 is a hollow packing used in the same embodiment. FIG. 1... Case, 2... Lighting light, 4... Lighting light cover, 21... Hollow packing, 22... Concave groove,
23...Convex strip, 25...Reference hole, 26...Mounting screw, 27...Fixing metal fittings.

Claims (1)

[Scope of utility model registration request] The lighting device has a case that holds an illumination light, and a box-shaped illumination light cover that is engaged with the case so as to cover the front of the illumination light, and the illumination light cover has an opening on a surface facing the case. one of the opening edge and the illumination light cover is provided with a groove in which a plurality of protrusions are formed on the inner wall, and the other is provided with a protrusion that is inserted into the groove; An elongated tubular hollow packing is inserted into the groove so as to be sandwiched between the convex part and the side wall of the groove opposite to the convex part, and the hollow packing is attached to the bottom surface of the groove by the protrusion. A lighting rainproof device characterized in that the case and the lighting light cover are fixed in a pressed state.