JPS6332202B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an underwater lamp having a space for accommodating water that has entered the lamp house.

(Background technology) Underwater lights are generally used as fishing lights for fishing or underwater work lights by suspending a lamp house underwater using a cable from a ship and lighting a lamp fitted into a socket inside the lamp house. say something

First, the basic configuration of the underwater light proposed by the applicant will be explained, and its problems will also be mentioned.

FIG. 2 is a diagram showing the basic configuration of the underwater light proposed by the applicant of the present invention, in which FIG. 2A is a side view and FIG. 2B is a plan view.

The lamp 1 is an underwater light emitting lamp having a light emitting part housed in a glass container, and uses, for example, a halogen lamp. The lamp 1 includes a light emitting part 1f, a cylindrical part 1a connected to the light emitting part 1f, a base part 1b having a smaller diameter than the diameter of the cylindrical part 1a, an inclined part 1c connecting the cylindrical part 1a and the base part 1b, and a base part 1a. It consists of a base 1d connected to a light emitting part 1b, and a filament 1e is provided inside the light emitting part 1f. A base 1d of the lamp 1 is fitted into a socket 3 provided in a lamp house 2. Cooling fins 2a are provided on the outer periphery of the lamp house 2. The upper part of the lamp house 2 is watertightly sealed by a head 4 via an O-ring 5. A cable 6 is led out from the top of the head 4, and is sealed watertight with a packing holder 8 via packings 7, 7a. The cable 6 is connected to the socket 3 with screws 3a, 3a. Three guard stays 12 are screwed to the opening side of the lamp house 2, and a weight 13 is fixed to the guard stays 12. The guard stay 12 is for protecting the lamp 1 from underwater obstacles and the like. The weight 13 is for quickly sinking the underwater lamp into the water.

The applicant has already proposed a structure for holding the lamp 1 in the opening of the lamp house 2 that can withstand use under high water pressure. This structure will be briefly described.
One end 9a of the gasket 9 is in contact with the end surface of the opening 2b of the lamp house 2. The inside of the packing 9 has a small diameter inner wall 9 that comes into contact with the base 1b of the lamp 1.
b, a large-diameter inner wall 9d that contacts the cylindrical portion 1a of the lamp 1, and an inclined inner wall 9c that contacts the inclined surface 1c of the lamp 1. The outer side of the packing 9 is formed by a cylindrical outer wall 9f having an inclined portion 9e at the other end. Patchkin 9 is Patchkin presser 10
is tightened by fixing it to the lamp house 2 with screws 11. The external dimensions of the packing 9 are larger than the space formed by the lamp 1, the lamp house 2, and the packing holder 10. Therefore, when the seal presser 10 is tightened and fixed, the internal stress generated in the seal 9 causes
Uniform compressive stress acts on the gasket 9, so that it adheres uniformly to each surface of the lamp 1.

With the above structure, watertightness can be maintained even if the dimensional accuracy of each surface of the lamp 1 is relatively low. In addition, even if the volume of the packing or the volume of the part where the packing is accommodated changes due to manufacturing errors, the error in volume is automatically corrected by slightly shifting the position of the light bulb in the axial direction. It is easy to tighten the bulb and there is no risk of it being damaged due to excessive stress being applied to the bulb. In other words, watertightness between the opening of the lamp house 2 of the underwater lamp and the lamp 1 is maintained, and movement of the lamp 1 in the direction of the base 1d can be avoided.

However, when assembling the seal 9 by tightening it with the seal presser 10, if there is any debris or the like caught between the seal 9 and the lamp 1 or the seal presser 10, if the pressure in the sea increases, sea water will leak out from the gap. may infiltrate.

Furthermore, if the lamp 1 is damaged for some reason while being used underwater, the interior of the lamp house 2 will be submerged in seawater. In this case, cable 6
One end is connected to atmospheric pressure on board the ship, while the other end is placed under high pressure underwater. Due to this pressure difference, seawater enters the gap between the core wires of the cable 6 and rises. Even if cable 6 is hoisted onto the ship,
Most of the seawater inside the core wire remains behind.
When the lamp 1 is replaced with a new one and submerged in the sea again, the seawater in the core wire of the cable 6 falls due to gravity.
There were many accidents where the seawater accumulated inside the lamp house 2 and caused the live metal parts of the sockets to short-circuit and burn out. Therefore, even though the cable 6 is expensive, once seawater has entered the cable 6, it cannot be used again.

(Object of the Invention) The object of the present invention is to provide a space for storing water in the lamp house, so that even if some water enters the lamp house, the water will not enter the live metal parts of the socket and the lamp. An object of the present invention is to provide an underwater lamp which can prevent short circuit accidents from occurring.

(Structure of the Invention) In order to achieve the above object, the underwater lamp according to the present invention includes an underwater luminescent lamp fitted into a socket housed in a support container, and an opening of the support container and the underwater lamp are held in a watertight structure. In the underwater lamp, a space for storing water that has entered the container is formed in a space within the support container that maintains a certain creepage distance from the live parts of the metal parts of the socket and the underwater luminescent lamp.

According to the above structure, the object of the present invention can be completely achieved.

(Example) Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

FIG. 1 is a diagram showing the main parts of an embodiment of an underwater lamp according to the present invention, in which FIG. 1A is a plan sectional view, and FIG. 1B is a partially cutaway side view. Note that the same reference numerals are given to parts that perform the same functions as those in the basic configuration described above.

The opening flange part of the lamp house 2 is a part to which the packing holder 10 is fixed with a screw 11 and a guard stay 12 is fixed with a screw 12a. In this embodiment, a water tank 2 is installed inside this flange.
c is provided.

As shown in FIG. 1A, the water tank 2c is
1, the screw hole 2e of the screw 12a, and the insertion hole 2f of the guard stay 12. As shown in FIG. 1B, the water tank 2c must have an upper end separated from the base 1d of the lamp 1 by at least a creepage distance α. This creepage distance α needs to be at least 12 mm when a voltage of 200V is applied. As described above, the lower end of the water tank 2c is held watertight from the outside by the gasket 9.

As described above, since the water tank 2c is formed in the lamp house 2, when the water that has entered the core wire of the cable 6 as described above flows out, the water is removed from the inner wall of the lamp house 2 and the insulating material. It passes through a gap between the outer wall of the socket 3 and is housed in the tank 2c. Since the underwater light is suspended by a cable 6, its swing angle underwater is limited to a certain range, so water stored in the water tank 2c does not flow into the socket 3 during use.

The water stored in the water tank 2c is naturally drained when the lamp 1 is removed when replacing the lamp 1. The reason why an inclined surface is formed at the lower end of the water tank 2c is to facilitate drainage.

(Effects of the Invention) As explained in detail above, according to the present invention,
Since a space is formed to accommodate water that has entered the lamp house, even if a small amount of water enters, the water will not soak into the metal of the live parts, and short circuit accidents will no longer occur.

Therefore, even cables that have been submerged in water can be used again.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the main parts of an embodiment of an underwater lamp according to the present invention, in which FIG. 1A is a plan sectional view, and FIG. 1B is a partially cutaway side view. Figure 2 is a diagram showing the basic configuration of the underwater light proposed by the applicant; Figure A is a side view and Figure B is a side view.
is a plan view. 1...Lamp, 2...Lamp house, 2c...Water tank, 3...Socket, 4...Head, 5...O ring,
6... Cable, 7... Packing holder, 8... Packing holder, 9... Packing holder, 10... Packing holder, 11...
Screw, 12...guard stay, 13...weight.

Claims (1)

[Claims] 1. In an underwater lamp in which an underwater luminescent lamp is fitted into a socket housed in a support container, and the opening of the support container and the underwater lamp are held in a watertight structure, a metal live part between the socket and the underwater luminescent lamp An underwater lamp characterized in that a space for accommodating water that has entered the container is formed in the interior space of the support container, which maintains a constant creeping distance from the support container.