JPH0116251Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to improvements in underwater lighting equipment, and particularly to a structure that can increase waterproof performance with a simple structure.

[Conventional technology and its problems]

For example, as shown in FIG. 3, a conventional general type underwater lighting device has a socket 2 fixed inside a cylindrical lighting device main body 1, and an annular packing 3 provided in the opening of the lighting device main body 1, which is tightened. It is tightened with a tool 4, and the annular packing 3 is tightly attached to the neck of the light bulb 5 to maintain waterproofness.

However, according to the same structure, the annular gasket 3 is pressed against the neck of the light bulb by the fastener 4, and the annular gasket 3 is simply tightened to the wall surface of the neck of the light bulb 5 with the fastener 4. Poor waterproofness
If the lighting equipment is submerged in a deep sea of 100m to 200m, there is a risk of water intruding into the interior of the lighting equipment body 1.

[Purpose of invention]

The present invention has been devised in view of the above points, and an object of the present invention is to provide an underwater lighting fixture that has a simple structure and can increase waterproof performance.

[Means for solving problems]

The present invention will be explained below with reference to FIGS. 1 and 2. In the figure, reference numeral 11 denotes a cylindrical lighting fixture body, which is made of, for example, brass. 1
Reference numeral 2 denotes a socket mounted inside the instrument main body 11 so as to be freely movable back and forth, and is configured such that a protrusion 13 provided inside the instrument main body 11 engages with a recess formed in the outer wall of the socket 12. Reference numeral 14 is a light bulb attached to the socket 12, and a part of the neck portion is formed into an inclined surface. Reference numeral 15 denotes a waterproof packing that presses against the neck of the light bulb and comes into close contact with it, and has an inclined surface 16 whose diameter decreases inward from near the outer end, and is connected to the inclined surface to form a cylindrical portion 17, and has an inner surface. A large number of concave and convex portions 18 are formed on the socket 12, and the waterproof gasket 15 is arranged in close contact with the neck of the light source 14 attached to the socket 12.

Reference numeral 19 denotes a pressing tool provided in the opening of the instrument main body 11, and the inner end of the pressing tool 19 is tapered 20. Reference numeral 21 denotes a guard supported at the opening of the instrument body 11.

[Effect of invention]

In the above structure, when the light bulb 14 is attached to the socket 12 attached to the appliance body 11, the light bulb 1
4 and the convex portion on the inner surface of the waterproof packing 15 are in close contact with each other.

Furthermore, when the lighting equipment is submerged in the depths of the sea, the light bulb 14 is pressed by water pressure and is pushed inward of the lighting equipment body 11 together with the socket 12, and the neck of the light bulb 14 is strongly pressed against the inner surface of the waterproof gasket 15 and comes into close contact with it.

[Effect of idea]

As described above, the present invention consists of a waterproof packing having an inclined surface whose diameter decreases inward from near the outer end, and a cylindrical portion connected to the inclined surface, and a large number of tubes are formed on the inner surface of the waterproof packing. This is an underwater lighting fixture in which the waterproof packing is pressed against the neck of the light source attached to the socket, has a pressing part on the outside, and is supported by a pressing tool with a tapered inner end. Therefore, as mentioned above, the waterproof gasket firmly fits into the neck of the light bulb, and furthermore, when the lighting equipment is submerged in the deep sea, the water pressure presses the bulb and socket inward into the lighting equipment body, increasing the waterproof performance. It has the effect that it can.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an underwater lighting device according to the present invention, FIG. 2 is a sectional side view of the waterproof gasket in FIG. 1, and FIG. 3 is a side view of a conventional underwater lighting device. 11...Lighting equipment body, 12...Socket, 1
4...Light bulb, 15...Waterproof packing.

Claims (1)

[Claims for Utility Model Registration] A socket 12 that moves back and forth inside the device body 11
In this structure, the waterproof gasket 15 is closely attached to the neck of the light bulb 14 that is installed in the socket 12. A cylindrical portion 17 is formed in connection with the surface 16, and a large number of irregularities 18 are formed on the inner surface of the waterproof packing 15,
Furthermore, the waterproof gasket 15 is pressed and supported by a pressing tool 19 which is in close contact with the neck of the light source 14 attached to the socket 12, has a pressing part on the outside, and has a tapered tip 20 at the inner end. Underwater lighting equipment.