JPS60240001A - Underwater lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to an underwater lamp that can withstand use under high water pressure, and particularly to an underwater lamp that has an improved holding structure between the opening of the lamp house of such an underwater lamp and the lamp. Regarding lights.

(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 in a socket inside the lamp house. say something Since underwater lamps are used underwater, the inside of the lamp house must be insulated from water.

Various proposals have been made regarding structures for holding the lamp and the opening of the lamp house of the underwater lamp.

(2) For example, in Utility Model Publication No. 54-4.863 "Underwater Lamp Holder", a tortoise-shaped packing 22 made of an elastic material is arranged around the outer periphery of the cylindrical part of the light bulb, and flanged plates are attached to both the upper and lower surfaces of the packing. 2
3.24 are connected and the flanged plates 23.24 are tightened in the axial direction, thereby expanding the packing 22 in the diametrical direction and maintaining a watertight state (see FIG. 5). However, with this structure, when water pressure increases, slippage may occur between the seal and the cylindrical surface of the bulb, potentially damaging the bulb or socket. In addition, because the structure cannot absorb manufacturing errors in the volume of the packing, the amount of tightening of the packing must be adjusted manually; if the tightening is too strong, the internal stress of the packing becomes too high, which may damage the bulb. If the tightening is too weak, it will be difficult to handle as it will succumb to the water pressure and cause water to leak.

In addition, Utility Model Application Publication No. 58-152710 ``Underwater Lamp Holder'' is a holder for watertightly housing a light bulb 31 in a hollow case, which has a stepped portion 31a with a small diameter cap formed around the proximal end of the bulb. A ring 35 (3) made of an elastic material is attached so as to be in close contact with the upper edge of the stepped portion of the light bulb, and the inward protrusion 3 is located at the upper edge of the ring.
3a, a lower annular body 34 which is tightened by pressing upward from the lower end of the case body, and an annular elastic body affixed between the upper annular body 33 and the lower annular body 34. A structure is shown in which a packing 32 is provided, and by tightening both top bodies 33, 34 (!), the annular packing 32 is bulged inward and brought into pressure contact with the outer periphery of the stepped portion of the light bulb (Fig. 6). ).However, in this structure, ring 3
5 and the stepped portion 31a are in line contact, stress is concentrated, so when the water pressure increases, the ring 35 deforms, and the inward protrusion 33a of the upper ring 33 comes into direct metal contact with the light bulb 31, so the concentrated stress causes the light bulb to deform. 31 may be destroyed, or the light bulb 31 may be pushed and moved in the axial direction by the water pressure, causing damage to the bulb cap or socket. In addition, since the stepped portion 31a and the ring 35 are not in full contact, the contact pressure changes depending on the angle of the stepped portion 31a, and in order to reduce the contact pressure, the contact surface of the stepped portion 31a with the ring 35 should be aligned with the center axis of the bulb. Make it as close to a right angle as possible (4) This inevitably creates a contradiction in that the R of the glass step becomes smaller and the strength of the light bulb itself becomes smaller.

Furthermore, Utility Model Publication No. 54-39915 "Underwater Lamp" describes an underwater light with a waterproof seal structure especially for halogen light bulbs,
[An auxiliary cap part having a larger diameter than the cap body part is provided at the joint part of the cap body part with the bulb neck part, and the first waterproof seal member is press-fitted and interposed between the auxiliary cap part and the lamp body, and , a second waterproof sealing member is provided at the joint between the auxiliary base and the bulb neck, and both of these sealing members are integrally pressed together. However, with this structure, the lower end surface of the sealing member's elastic body comes in contact with seawater over a wide area, so due to the viscoelastic property of the elastic body, the high pressure exerted on the elastic body from the neck of the mouthpiece causes the elastic body to be submerged in the sea. The internal stress of the seal member is less likely to increase due to protrusion. Therefore, it is not possible to effectively prevent the bulb from moving in the axial direction, and force is also applied to the socket, damaging the bulb base and socket and damaging the gasket between the lamp body and the bulb base. It is impossible to design it for use in deep water because the thin wall part breaks (5).

(Objective of the Invention) The object of the present invention is to provide an underwater lamp that can keep the inside of the lamp house watertight even against high water pressure, and that can prevent the lamp from being destroyed due to metal contact between the lamp house and the like. It is about providing.

(Structure of the Invention) In order to achieve the above object, the underwater lamp according to the present invention has a shape in which the neck of the glass container housing the light emitting part has a diameter larger than that of the cylindrical part on the base side and the cylindrical part on the side of the light emitting part. an underwater light emitter formed from a cylindrical portion; an underwater light emitter support container having an opening having an inner diameter that receives the cylindrical portion on the base side of the underwater light emitter and a pressure receiving surface formed on an end surface; , a packing made of an elastic body having an end surface that contacts the pressure receiving surface, an inner wall having a step that fits the neck of the light emitter, an outer wall, and another end surface corresponding to the end surface; a gasket presser that presses from the side against the underwater light emitting device support container and the neck of the underwater light emitting device (6) to seal and close the device; The relationship between the gap between the cylindrical part on the base side of the glass container and the inner diameter of the packing holder, the gap between the cylindrical part on the light emitting part side of the glass container, and the hardness of the packing is such that the underwater light emitter is pushed toward the base by water pressure. When the internal stress of the packing is increased, problems due to extrusion will not occur, and the neck of the underwater light emitter is supported through the internal stress of the packing.

According to the above configuration, 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 shows an embodiment of the underwater light according to the present invention.
2 is a side view, FIG. 2B is a plan view, and FIG. 2 is a diagram showing in detail the opening of the lamp house and the holding structure for the lamp.

(7) The lamp 1 is an underwater light-emitting device 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 diameter smaller than the diameter of the first cylindrical part 1a, an inclined part 1c connecting the cylindrical part 1a and the base part 1b, and a base part 1b. 1
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. The socket 3 is movable in the axial direction. With this structure, even if the lamp 1 moves toward the socket 3 due to water pressure, damage to the lamp 1 or the socket 3 can be prevented. The socket 3 is prevented from rotating with respect to the central axis, so that the lamp 1 can be easily fitted into the socket 3.

Cooling fins 2a are provided on the outer periphery of the lamp house 2. Above lamp house 2 is Q IJ 'Fugu 5
The head 4 is sealed watertight via the head 4.

(8) A cable 6 is led out from the top of the head 4, and is sealed watertight with a packing holder 8 via a packing 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.

Next, the structure of the opening of the lamp house and the lamp holding portion will be explained in more detail with reference to FIG. - The inner diameter of the opening 2b of the lamp house 2 is the same as the base 1 of the lamp 1.
Since it cannot be made the same as the outer diameter of b, there is a gap.

One end 9a of the packing 9 is connected to the opening 2b of the lamp house 2.
is in contact with the end face of the The inside of the gasket 9 includes a small diameter inner wall 9b that contacts the base 1b of the lamp 1, a large diameter inner wall 9d that contacts the cylindrical portion 1a of the lamp 1, and an inclined inner wall 9 that contacts the inclined surface 1c of the lamp 1.
c is formed. The outer side of the packing 9 is formed by a cylindrical outer wall 9f having an inclined portion 9e at the other end.

The seal 9 is tightened by fixing the seal holder 1o to the lamp house 2 with screws 11. The packing holder 1o is also dimensioned to have a gap so as not to come into contact with the cylindrical portion 1a of the lamp 1. Patsukin 9
The external dimensions are lamp 1° lamp house 2. It is formed larger than the space formed by the packing presser 10. Therefore, when the seal holder 10 is fixedly tightened, uniform compressive stress is applied to the seal 9 due to the internal stress generated in the seal 9, so that the seal 9 is evenly adhered to each surface of the lamp 1. . Therefore, watertightness can be maintained even if the dimensional accuracy of each surface of the lamp 1 is relatively low. Furthermore, even if the volume of the packing or the volume of the part where the packing is accommodated changes due to manufacturing errors, the volume error is corrected by a slight shift in the axial position of the light bulb, so the packing (10) It is easy to tighten the clamp and there is no risk of damage due to excessive stress being applied to the light bulb.

Inner diameter of opening 2b of lamp house 2 and base 1 of lamp 1
The relationship between the gap between the aperture of b and the inner diameter of the seal holder 10 and the aperture of the cylindrical portion 1a of the lamp 1, and the hardness of the seal 9 is as follows: This is to prevent part of the packing 9 from protruding from the gap and being damaged. That is, although it is preferable that each of the gaps be small in terms of accuracy, it is necessary to provide a certain gap in relation to the outer diameter of the lamp 1. For this reason,
The packing 9 is designed to have such hardness that it will not protrude from the gap.

Further, when a relatively high water pressure is applied to the lamp 1 in the direction of the base, the gasket 9 receives a pressure corresponding to the difference in cross-sectional area between the cylindrical part 1a and the base part 1b from the first peeling part IC of the lamp 1. Therefore, the internal stress of the gasket 9 increases and the gasket 9 comes into closer contact with the lamp 1. The internal stress of the packing is determined only by the difference in cross-sectional area between the cylindrical part 1a and the base part 1b, regardless of the design angle of the inclined part 1d. A suitable shape can be selected. According to experiments conducted by the inventors of the present invention, when the ratio of the diameters of the cylindrical portion 1a and the base portion 1b of the lamp 1 is designed to be 5:4, when water pressure is applied from the cylindrical portion 1a side, the internal stress of the gasket 9 is It has been confirmed that an internal pressure of approximately 2.5 to 3 times the water pressure is applied, and by arbitrarily designing the ratio of this diameter, the ratio between the water pressure and the packing internal pressure can be made larger or smaller. In addition, the shape of the packing 9 is thin and has no notches, and only compressive stress is applied to areas other than the protruding portions, so there is no fear that the packing 9 will break.

(Modifications) Various modifications can be made to the embodiments described in detail above within the scope of the present invention.

FIGS. 3 and 4 are diagrams showing details of a holding structure for holding a lamp and an opening of a lamp house according to another embodiment of the present invention.

As shown in FIG. 3, the lamp house 2 is extended in the outer circumferential direction of the packing 9, the packing presser 1o is pushed in, and the packing 9 is moved into the lamp house 2. The space formed by the neck of the lamp 1 and the packing holder 10 may be hermetically closed.

Further, as shown in FIG. 4, a ring 2c is inserted into the lamp house 2 side, and the packing 9 is connected to this ring 2C and the lamp house 2. The space formed by the packing presser 10 may be hermetically closed. In this case, the ring 2c can be considered part of the lamphouse 2.

Although the above embodiment assumes that the underwater light is used for collecting fish, it can also be used not only for collecting fish, but also as an underwater light installed on the seabed, or an underwater light for a device that moves underwater with its own blade. I can do it.

(Effects of the Invention) As explained in detail above, according to the present invention, even if the accuracy of the outer diameter of the lamp is relatively low, the packing uniformly adheres to the lamp surface due to the internal stress acting on the packing. It can maintain watertightness against high pressure water. Also,
The lamp is no longer destroyed due to contact with other parts.

On the other hand, since the neck of the underwater lamp according to the present invention has a two-stage cylindrical structure, the diameter can be easily controlled. Therefore, the gap between the support container and the packing holder can be made sufficiently small depending on the purpose, making it easy to design a watertight structure for deep sea use.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of an underwater light according to the present invention;
FIG. 2 is a diagram showing in detail the opening of the lamp house and the holding structure for the lamp. FIGS. 3 and 4 are diagrams showing details of a holding structure for holding a lamp and an opening of a lamp house according to another embodiment of the present invention. FIGS. 5 and 6 are diagrams for explaining a conventional example of a holding structure for an underwater lamp. ■... Lamp 2... Lamp house 3... Socket 4... Head 5... 0 ring 6... Cable 7... Packing 8... Packing holder (14) 9... Patchkin 10... Patchkin press 11...
Screw 12...Guard stay 13...Way 1- Patent applicant Mikuni Kikai Kogyo Co., Ltd. agent Patent attorney Hisashi Inoro (15) CXJ2 piece 4 Zuga 5 countries O6 diagram procedural amendment 1, case Indication: 1982 Patent Application No. 94939 2, Title of invention: Underwater lamp 3, ? Relationship with the case of the person making the amendment Patent applicant 4, agent 6, subject of amendment Description 7, content of amendment

Claims (1)

[Scope of Claims] In the underwater lamp, the neck of the glass container housing the light emitting part is formed from a cylindrical part on the base side and a cylindrical part having a larger diameter than the cylindrical part on the light emitting part side. an underwater light emitter; an underwater light emitter support container having an opening having an inner diameter that receives a cylindrical portion on the base side of the underwater light emitter and a pressure receiving surface formed on an end surface; and an end surface that abuts the pressure receiving surface; a packing made of an elastic body having an inner wall having a stepped portion that fits the neck of the light emitting device, an outer wall, and another end surface corresponding to the end surface; and supporting the underwater light emitting device by pressing the packing from at least the other end surface side. A sealing holder is provided that presses against the container and the neck of the underwater light emitting device to seal and close the container, and the gap between the aperture that receives the cylindrical portion on the base side of the underwater light emitting device and the cylindrical portion on the base side of the glass container, and the gap between the cylindrical portion on the base side of the glass container and the The relationship (1
) is such that when the underwater light emitter is pushed toward the base by water pressure and the internal stress of the gasket increases, problems due to protrusion do not occur, and the neck of the underwater light emitter is supported via the internal stress of the gasket. An underwater light characterized by being configured as follows.