JPH0662702A - Underwater illuminator - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides an underwater lighting device suitable for functioning as a natural aquarium that does not damage fish and for protecting oneself from sharks. [Structure] In the present invention, as the light diffused / scattered in the water by the light emitting means 3, the light of the wavelength which the target fish ecologically dislikes is positively used, whereby, for example, the surroundings are made into a fence shape. By surrounding it, it is possible to prevent the fish inside from approaching it, and also to prevent it from escaping to the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underwater illuminating device which selectively uses only the light of a wavelength that fish does not like among the light from a light source to emit and emit the light of that wavelength in water.

[0002]

2. Description of the Related Art Many saltwater and freshwater fishes that can be artificially cultivated are known. For example, saltwater fish are provided with an enclosure such as a net from the sea to the sea, and seawater is used as it is. It is known that the animals are raised in a state as close to natural as possible.

[0003]

However, in such a breeding method, it accidentally collides with an enclosure such as a net and scratches the skin, leading to a decrease in commercial value, or in extreme cases, damage from the scratch. It may be infected and die, which is a problem. Therefore, for example, measures such as passing a weak current through the enclosed portion of the net are being studied, but even then, the cultured fish may be slightly scratched, and the development of effective means is desired. Such a situation is more remarkable for a sunfish or the like that is bred in an aquarium or the like, and even a slight wound may be life-threatening, which is a serious problem. Therefore, in view of the conventional problems described above, the present invention is suitable for application to a highly safe diving suit that can function as a natural aquarium that does not damage fish in water and protects yourself from sharks and the like. It is an object of the present invention to provide a simple underwater lighting device.

[0004]

That is, the underwater lighting apparatus of the present invention is a light source that emits light in a wavelength range including a predetermined wavelength that a fish dislikes, and the light from this light source is submerged in water through an optical transmission means. And a light emitting means for guiding and diffusing or diffusing light. The present invention also provides a light source that uses natural light such as the sun or artificial light that is electrically turned on, a filter means that transmits only the light of a specific wavelength that fish dislikes among the light supplied from the light source, and the filter. A specific wavelength of light transmitted by the means, a viscous liquid, solid or gel core, and a cylindrical clad having a smaller refractive index and flexibility than the core and enclosing the core. And a light emitting means for guiding and diffusing or diffusing light into water through an optical transmission hose consisting of.

[0005]

In the present invention, as the light diffused / scattered in the water by the light emitting means, the light of the wavelength that the target fish ecologically dislikes is positively used, whereby the surrounding area is surrounded by a fence, for example. By setting it, it is possible to prevent the fish inside from approaching it, and also to prevent it from escaping to the outside.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an underwater lighting device according to the present invention.
A filter means 2, a diffusing tube 3 assembled in a box shape as a light emitting means, an optical transmission hose for optically connecting the light source 1 and the filtering means 2 and the filtering means 2 and the diffusing tube 3. The used light guide tube 4 is provided. In this embodiment, the light source 1 uses natural light as it is in fine weather,
In cloudy weather or rainy weather, artificial light such as a predetermined lamp or light emitting diode (LE) is supplied by power from a battery (not shown) that stores electric power generated by a solar cell or the like in fine weather.
D) Electroluminescence (EL), laser, etc. are operated to supply light. That is, the light source 1 of this embodiment is configured to efficiently collect sunlight by a parabolic reflector in fine weather.
The collected light is sent out to the filter means 2 via the light guide tube 4. In addition, the light source 1 of this embodiment
The light from the light source must include the light of the wavelength (λ ₀ ) most disliked by the fish to be cultivated. The light source 1 of this embodiment is mounted on a light and durable levitation body 11 and has a structure in which a ballast 12 or an anchor is struck in the water so as not to be capsized or tided in stormy weather. ing.

The filter means 2 is adapted to selectively take out only the light of the wavelength (λ ₀ ) most disliked by the fish according to the kind of fish to be cultivated, and various known optical elements such as color filters are used. It is possible, but not limited to visible light. In addition, as this filter means,
In addition to the color filter of this embodiment, for example, a prism,
The wavelength, wavelength band, intensity, etc. of light can be changed and used by using a diffraction grating, a fluorescent body, a non-linear optical element or the like. The light diffusing tube 3 is for taking in only the light of the specific wavelength (λ ₀ ) selected by the filter means 2 through the light guiding tube 4 which will be described later, and for emitting the light, and is used as the light guiding tube 4 in this embodiment. It is made of the same transparent material as the optical transmission hose, and is composed of a core and a clad that is made of a transparent material with a lower refractive index than the core and has fine irregularities formed on the inner peripheral surface in contact with the core. There is. As a result, the fish 5 cultivated in the box-shaped internal space has a wavelength λ _0.
It is possible to prevent the light from being disliked and approaching the vicinity of the diffuser tube 2 or passing through between the diffuser tubes 2 and escaping to the outside. The diffusing tube 3 of this embodiment is composed of three systems 3A to 3C divided via a demultiplexer 6. In this embodiment, the demultiplexer 6 is composed of first and second half mirrors 6A and 6B as shown in FIG. 3, and the light from the light guide tube 4 is divided into two by the first half mirror 6A. The light is split and one light is supplied to the first diffuser tube 3A through the light guide tube 4A, and the other light is split into two by the second half mirror 6B. One of the demultiplexed lights passes through the light guide tube 4B and the third diffuser tube 3
The other light is supplied to the second diffuser tube 3B as it is. Although a diffuser tube is used in this embodiment, the diffuser plate is not limited to this and may be a diffuser plate.

As shown in FIG. 4, the light guide tube 4 has a core 41 made of a viscous liquid filled in a polymer clad 42 processed into a flexible pipe shape, and both ends of the clad 42 are transparent. It is sealed by the window 43. By using the clad 42 having a refractive index lower than that of the core 41, total reflection of light occurs at the interface between the two, and as shown in FIG. 4, the light incident from one end to the other end is repeated by repeating this total reflection. I am able to tell you. As the core 43, polyols such as polyethylene oxide, polypropylene oxide and glycerin, polyol esters, polyol ethers, phosphoric acid esters such as chloroethyl phosphate, dichloropropyl phosphate, liquid paraffin, fluorine oil, silicone oil, polyisobutylene, A polysiloxane-modified polyether, an aqueous solution of an inorganic salt, a polymer solution obtained by diluting a polymer with an appropriate solvent, or the like is used. Here, the hollow tubular clad 42
As a material for forming, it has flexibility like plastics and elastomers, and can be molded into a tube.
It is preferable to use a material having a low refractive index.

Specific examples thereof include polyethylene, polypropylene, polyamide, polystyrene, ABS, polymethylmethacrylate, polycarbonate, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyethylene-vinyl acetate copolymer, polyvinyl alcohol, polyethylene- Polyvinyl alcohol copolymer, fluororesin, silicone resin, natural rubber, polyisoprene rubber, polybutadiene rubber, styrene-butadiene copolymer, butyl rubber, halogenated butyl rubber, chloroprene rubber,
Examples thereof include acrylic rubber, EPDM, acrylonitrile-butadiene copolymer, fluororubber and silicone rubber. Among these, silicone-based polymers and fluorine-based polymers having a low refractive index are particularly preferable. Specifically, silicone-based polymers such as polydimethylsiloxane polymer, polymethylphenylsiloxane polymer, fluorosilicone polymer, polytetrafluoroethylene (PTFE),
Tetrafluoroethylene-hexafluoropropylene copolymer (FE
P), tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PFE), polychlorotrifluoroethylene (PCTFE), tetrafluoroethylene-ethylene copolymer (ETFE), polyvinylidene fluoride, polyvinyl fluoride, Vinylidene fluoride-trifluoroethylene chloride copolymer, vinylidene fluoride-hexafluoropropylene copolymer, vinylidene fluoride-propylene hexafluoride-
Examples include tetrafluoroethylene terpolymer, tetrafluoroethylene propylene rubber, and fluorine-based thermoplastic elastomer. These materials may be used alone or in a mixture of two or more kinds, and may be used as a single tube or multiple tubes. Furthermore, only the inner surface in contact with the core liquid can be subjected to a treatment such as a smoothing treatment by a method such as coating or double extrusion.

Further, as shown in FIG. 4, an opaque outer cover 44 may be coated on the outer periphery of the clad 42 for the purpose of shielding light. The transparent window 43 includes crown glass, quartz,
Flint glass, chalcogenite glass, sapphire, crystal, polycarbonate, methacrylic resin, polystyrene resin, etc. can be used. In addition, as the core 41,
Not only the viscous liquid, but also the solid or gel form can be used. For example, a solid material such as plastic or thermoelastomer, or a gel material obtained by filling the clad 42 with a curable liquid material such as epoxy resin, liquid silicon, polyurethane, or liquid polybutadiene and curing the same may be used. As the core and the clad used in this embodiment, it is preferable to use a core or a clad which has a low absorption rate of light of a wavelength to be transmitted.

In this embodiment, in order to generate a large amount of plankton that fish prefers to emit inside the light diffusing tube 3, it is necessary to simultaneously supply the light emitted from the light source 1 with a wavelength suitable for the growth of the plankton. In addition, a filter that transmits light of that wavelength may be added. Further, in this embodiment, only the diffuser tube 3 is assembled in a box shape and directly attached to the four columns 7, but the periphery of the diffuser tube may be wrapped with a net or the like. Further, in this embodiment, it is used in water, that is, in a lake or the ocean, but by attaching a light emitting means to the inside of the aquarium in an aquarium or the like and emitting light of a wavelength that the fish in the aquarium dislikes, It can also prevent the fish from hitting the aquarium. Further, according to this embodiment, in addition to the function as the fence, in particular, a light emitting means is attached to the outer circumference of the diving equipment so as to emit light of a wavelength that the shark dislikes. Of course, it is also possible to adopt a configuration that protects.

[0012]

As described above, according to the underwater lighting apparatus of the present invention, the light of the wavelength that the target fish ecologically dislikes is positively used, and the wavelength of the light is changed from the light source on the water. Light is guided into the water by the light transmission hose, and the light of the specific wavelength is diffused or diffused by the light emitting means.For example, if the light emitting means is assembled in a box shape and a fish that dislikes the wavelength is put inside, It is possible to function as a tank of water, and by attaching light emitting means to diving suits and wet suits and guiding light of a wavelength that sharks dislike as the light to be scattered, safety without fear of being attacked by sharks. It can be applied to a wide variety of fields, including the provision of high quality products.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which an underwater lighting device according to the present invention is used as an open field in the sea.

FIG. 2 is a perspective view showing a state in which the light emitting means according to the present invention is assembled in a box shape.

FIG. 3 is an optical path diagram showing a state when the light emitted from the light guide tube according to the present invention is demultiplexed.

FIG. 4 is a schematic cross-sectional view showing an optical transmission hose that serves as a light guide tube.

[Explanation of symbols]

 1 light source 2 filter means 3 diffuser tube (light emitting means) 4 light guide tube (light transmission hose)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takao Aoki 42-2 Inuyama-cho, Sakae-ku, Yokohama-shi, Kanagawa (72) Inventor Kiyoshi Koyama 729 Yamanouchi, Kamakura-shi, Kanagawa

Claims (2)

[Claims] 1. A light source that emits light in a wavelength range including a predetermined wavelength that fish hate, and a light emitting unit that guides light from the light source into water through an optical transmission unit to diffuse or diffuse the light. Underwater lighting device characterized by the above. 2. A light source using natural light such as the sun or artificial light that is electrically turned on, a filter means for transmitting only light of a specific wavelength that fish dislikes out of the light supplied from this light source, and this filter means. The specific wavelength of the light transmitted through the core is formed from a viscous liquid, solid or gel core, and a cylindrical clad that has a smaller refractive index than the core and is flexible and encloses the core. An underwater illumination device, comprising: a light emitting unit that guides light into water through a light transmission hose to diffuse or diffuse light.