JPH057689Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a waterproof structure for a lighting fixture in which a lamp is disposed on a pole.

[Prior Art] Fig. 5 shows a conventional example, in which a pole 1 is formed in a cylindrical shape, and a mounting bracket 3 provided at the bottom of a lamp body 2 is fitted into an opening at the top of the pole 1. , the lamp body 2 is attached to the pole 1. In FIG. 5, the screw 4 through the gasket 5 is screwed into the screw hole 6 of the side part 3a of the mounting bracket 3 from the outside of the pole 1, and the mounting bracket 3, that is, the lamp body 2 is attached to the pole 1. ing.
That is, waterproofing is achieved by interposing the gasket 5 between the screw 4 and the pole 1.

FIG. 6 shows another conventional example, in which the mounting bracket 3 is fixed to the pole 1 by welding the inside of the pole 1 and the mounting bracket 3 (X portion in the figure).

FIG. 7 shows yet another conventional example, in which a countersunk screw-like screw 4 is used, and the insertion hole 7 of the pole 1 is also widened on the outside to match the head of the screw 4. In this conventional example, a silicone adhesive 8 is applied to the inside of the head of the screw 4, and the screw 4 is screwed into the screw hole 6 through the insertion hole 7 to make it waterproof.

[Problems to be Solved by the Invention] In the conventional example shown in FIG. 5, there is a problem in that the heads of the screws 4 and the seals 5 protrude from the outer surface of the pole 1, resulting in an unsightly appearance.

In addition, in the conventional example shown in Fig. 6, the appearance is good because no screws are used, but the pole 1 and the mounting bracket 3
Since these are welded together, there is a cost problem.

In addition, in the conventional example shown in FIG. 7, a countersunk screw-like screw 4 coated with silicone adhesive 8 is used, and although the head of the screw 4 does not protrude from the surface of the pole 1,
This conventional example also has a cost problem.

The present invention has been proposed in view of the above-mentioned points, and its purpose is to provide a waterproof structure for lighting equipment that is waterproof without impairing the appearance of the connecting part between the pole and the main body of the lighting equipment. It is something.

[Means for Solving the Problems] The present invention includes a cylindrical pole and a lamp body in which a cylindrical lower part made of sheet metal and having an outer diameter smaller than the inner diameter of the pole is fitted into an opening at the upper part of the pole. A plurality of cutouts with openings at the lower edge are provided on both sides of the lower part of the lamp body, a fixing piece is formed with a cutout, and a gasket is attached to the outer surface of each of the fixing pieces. Set the outer diameter of the lamp body including the attached packing to be slightly smaller than the inner diameter of the above-mentioned pole, and with the fixing piece screwed from the outside of the pole through the packing, elastically deform the fixed piece outward. It is made by attaching the packing to the inner surface of the pole.

[Function] Then, the gasket is attached to the outer surface of each fixed piece, the lower part of the lamp body is fitted into the opening of the pole, and the outer surface of the pole screws the screw into the fixed piece through the gasket. , the fixing piece is elastically deformed outward to bring the gasket into close contact with the inner surface of the pole.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 4 shows a cross-sectional view of the entire connecting portion between the pole 1 and the lamp body 2. The pole 1 is formed in a cylindrical shape, and the upper part is open. A substantially skirt-shaped connecting portion 9 is formed at the base of the lamp main body 2.
The interior is hollow, penetrating from top to bottom.
A circular mounting bracket 3 is attached to the bottom surface of this connection part 9 with a screw 1.
0, and a side portion 3a is formed downward from the peripheral edge of the mounting bracket 3. As shown in FIGS. 1 to 3, the side portion 3a of the mounting bracket 3 is provided with cutouts 11 with openings at the lower edge on both sides, and a fixing piece 12 is cut out therein. In addition, the fixed piece 12
is recessed inward one step to form a recessed stepped portion 13 on its outer surface. Further, a screw hole 14 is formed approximately in the center of the fixing piece 12. The fixing pieces 12 are formed at three locations on the side portion 3a of the mounting bracket 3, for example.

Further, as shown in FIG. 3, the mounting bracket 3 is provided with a so-called pot-shaped insertion hole 15 through which the screw 10 is inserted, and a through hole 17 through which the lead wire 16 is inserted in the center. is perforated. Furthermore, two screw holes 18 are provided.

On the other hand, an insertion hole 20 through which a countersunk screw-shaped screw 19 is inserted is bored in a portion of the pole 1 corresponding to the fixing piece 12, and this insertion hole 20 expands to match the shape of the head of the screw 19. There is.

As shown in FIG.
A gasket 21 is attached to this portion, and the gasket 21 is thicker than the recessed step portion 13 and protrudes slightly outward from the side portion 3a of the mounting bracket 3. Then, attach the mounting bracket 3 to which the packing 21 is attached to the first
Insert into pole 1 as shown in figure a. At this time, the thickness is such that the packing 21 does not touch the inner surface of the pole 1. Next, the screw 19 is screwed into the screw hole 14 of the fixing piece 12 through the insertion hole 20 and the packing 21 to fix the mounting bracket 3 to the pole 1. At this time, as the screw 19 is tightened, the fixing piece 12 is bent toward the pole 1, the outer surface of the gasket 21 comes into close contact with the inner surface of the pole 1, and the screw 19
The connection part can be made waterproof. Also,
The head of the screw 19 fits within the insertion hole 20 and does not protrude from the outer surface of the pole 1.

Incidentally, as shown in FIG. 4, a lighting device 22 for lighting the lamp of the lamp body 2 is housed inside the pole 1. That is, the lower surface of the mounting bracket 3 has a screw 24 screwed into the screw hole 18.
A mounting plate 23 is provided, a lighting device 22 is mounted on the mounting plate 23, and a lead wire 16 from the lighting device 22 is led out to the lamp side through an insertion hole 17 of the mounting bracket 3. In addition, to make the pole 1 and the lamp body 2 waterproof, the upper edge of the pole 1 and the connecting part 9
The seal 25 is located between the lower surface of the outer periphery of the

[Effects of the invention] As described above, the present invention includes a cylindrical pole and a lamp body in which a cylindrical lower part made of sheet metal and having an outer diameter smaller than the inner diameter of the pole is fitted into the opening at the upper part of the pole. A plurality of cutouts with openings at the lower edge are provided on both sides of the lower part of the lamp body, a fixing piece is formed with a cutout, and a gasket is attached to the outer surface of each of the fixing pieces. Set the outer diameter of the lamp body including the attached packing to be slightly smaller than the inner diameter of the above-mentioned pole, and with the fixing piece screwed from the outside of the pole through the packing, elastically deform the fixed piece outward. Since the gasket is tightly attached to the inner surface of the pole, the gasket is attached to the outer surface of each fixed piece, the lower part of the lamp body is fitted into the opening of the pole, and the outer surface of the pole is attached to the fixed piece through the gasket. By screwing the screw into the hole, the fixing piece is elastically deformed outward, and the gasket is brought into close contact with the inner surface of the pole. This prevents the gasket from coming out on the outside like in the past, making the screw part waterproof without damaging the appearance. This has the effect of making it possible to improve the situation.

[Brief explanation of the drawing]

FIGS. 1a and 1b are explanatory diagrams of the operation of the embodiment of the present invention,
Figure 2 is a perspective view of the same essential parts as above, Figures 3 a to c are front views, broken side views and perspective views of essential parts of the same mounting bracket as above, Figure 4 is a sectional view of the same as above, and Figure 5 is a conventional example. 6 is a sectional view of a main part of another conventional example, and FIG. 7 is a sectional view of a main part of still another conventional example. 1 is the pole, 2 is the light fixture body, 3 is the mounting bracket, 1
1 is a notch, 12 is a fixed piece, 13 is a recessed step, 21
is Patsukin.

Claims (1)

[Scope of utility model registration request] It has a cylindrical pole and a lamp body in which a cylindrical lower part made of sheet metal and having an outer diameter smaller than the inner diameter of the pole is fitted into the opening at the upper part of the pole,
Cutouts with lower edge openings are provided at multiple locations on both sides of the lower part of the light fixture body, and fixing pieces are formed with cutouts, respectively;
Attach a gasket to the outside surface of each of the above fixed pieces, set the outer diameter of the lamp body including the attached gasket to be slightly smaller than the inside diameter of the above pole, and attach the gasket to the fixed piece from the outside surface of the pole via the gasket. A waterproof structure for a lighting device characterized in that the fixing piece is elastically deformed outward in a screwed state to bring the packing into close contact with the inner surface of the pole.