JPH10188912A - Electrodeless discharge lamp, electrodeless discharge lamp lighting device and fluid treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure, and eliminate the necessity of embedding a discharge lamp inside a pipeline and of drilling a hole for leading a feeder wire in the case of using this electrodeless discharge lamp for fluid treatment device by arranging an induction coil near an electrodeless discharge tube, which is sealed with the discharging medium, and performing the non-contact power feed from a power feed coil without providing a power feed wiring. SOLUTION: A nearly straight tubular electrodeless discharge tube 1 is made of glass or quartz and formed into a sealed cylindrical shape, and inside thereof is sealed with the discharging medium such as rare gas. Periphery of the electrodeless discharge tube 1 is wound with an induction coil 2 along the tube axis in the longitudinal direction, and this induction coil 2 is not provided with an opening end, and both ends thereof are connected to each other. A power feed coil 3 is concentrically arranged in the periphery of the electrodeless discharge tube 1. Both ends of the power feed coil 3 are connected to an high frequency power source. When high frequency current is supplied from the high frequency power source to the power feed coil 3, the discharging medium inside the electrodeless discharge tube 1 is excited for light emission by the induced current of the high frequency.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeless discharge lamp, an electrodeless lamp lighting device, and a fluid processing apparatus using the same, in which power is supplied to an induction coil without connection.

[0002]

2. Description of the Related Art An electrodeless discharge lamp is generally formed by winding an induction coil around the outer circumference of a discharge tube in which a discharge medium is sealed. Then, a high-frequency current supplied from a high-frequency power supply is caused to flow through the induction coil to excite and discharge the discharge medium in the discharge tube.

In the electrodeless discharge lamp configured as described above, both ends of the induction coil are conventionally connected to both poles of a high-frequency power supply. As this kind of electrodeless discharge lamp, JP-A-64
As described in JP-A-31397, an induction coil is electrically disconnected at a point other than a power supply point, and the disconnection is electrically connected in series via a capacitor to connect between the terminals of the induction coil and the induction coil. The one in which the potential difference between the ground and the ground is small is known.

[0004]

However, according to the conventional electrodeless discharge lamp configured as described above, particularly when the electrodeless discharge lamp is arranged in a flow path in a fluid treatment device or the like, a high-frequency current flows through the induction coil. In order to guide the power supply line for supplying water to the outside, it was necessary to make a hole in the pipe wall of the flow path. In addition, there is a possibility that the power supply line blocks light emitted from the electrodeless discharge lamp. In order to prevent this light blocking, it is necessary to arrange a power supply line along the holding portion for holding the discharge tube, and there is a disadvantage that the structure becomes complicated.

Although the electrodeless discharge lamp described in the above publication can reduce noise by reducing the ground potential, no consideration has been given to solving the above-mentioned problems.

The present invention solves the above-mentioned problems, eliminates the need for a power supply wiring to an induction coil, and simplifies the structure of the holding means for the discharge tube, thereby enabling efficient discharge with an electrodeless discharge lamp. An object of the present invention is to provide an electrodeless discharge lamp lighting device and a fluid processing device.

[0007]

According to a first aspect of the present invention, there is provided an electrodeless discharge lamp including: an electrodeless discharge tube in which a discharge medium is sealed; an induction coil disposed near the electrodeless discharge tube; And a power supply coil disposed so as to perform non-connected power supply without providing the power supply wiring.

According to a second aspect of the present invention, there is provided the electrodeless discharge lamp according to the first aspect of the present invention, wherein the core material is axially disposed in the electrodeless discharge tube; and the core material is wound around the core material in the electrodeless discharge tube. And an induction coil.

According to a third aspect of the present invention, in the electrodeless discharge lamp according to any one of the first and second aspects, both ends of the induction coil are connected to each other.

According to a fourth aspect of the present invention, there is provided the electrodeless discharge lamp according to any one of the first and second aspects, wherein both ends of the induction coil are opened, and the open end is in contact with the tube wall of the electrodeless discharge tube. .

According to a fifth aspect of the present invention, in the electrodeless discharge lamp of the fourth aspect, the open ends of the induction coils are connected to each other via a capacitor.

According to a sixth aspect of the present invention, in the electrodeless discharge lamp according to the fifth aspect, the electrode portion of the capacitor is in contact with the tube wall of the electrodeless discharge tube.

According to a seventh aspect of the present invention, there is provided an electrodeless discharge lamp including: an electrodeless discharge tube in which a discharge medium is sealed; an induction coil disposed near the electrodeless discharge tube; and a receiving coil connected to the induction coil. A power supply coil, which is disposed opposite to the power receiving coil so as to perform non-connection power supply without providing a power supply wiring to the power receiving coil.

According to an eighth aspect of the present invention, there is provided the electrodeless discharge lamp lighting device according to the seventh aspect, further comprising a matching circuit including at least one capacitor between the power receiving coil and the induction coil.

An electrodeless discharge lamp according to a ninth aspect of the present invention includes the electrodeless discharge lamp according to any one of the first to eighth aspects, and a high-frequency power supply for supplying high-frequency power to a power supply coil.

A fluid processing apparatus according to a tenth aspect of the present invention is directed to a fluid treatment apparatus according to any one of the first to eighth aspects, wherein: a conduit through which fluid flows in and out; The electrodeless discharge lamp lighting device described above.

In each of the above inventions, the discharge tube may be an illumination light source that emits visible light, and the discharge tube may be a UV light that emits UV light.
It may be a light source. A reflecting material may be applied to the surface of the induction coil and the inner surface of the conduit.

According to the first aspect of the present invention, since the power supply to the induction coil is performed without providing the power supply wiring and by the power supply coil without connection, it is not necessary to arrange the power supply line in the holding means of the discharge tube. , The structure can be simplified. In particular, when the discharge tube is used in a fluid processing apparatus, the discharge tube can be completely immersed in the conduit, and it is not necessary to form a hole for guiding the power supply line into the conduit.

According to the second aspect of the present invention, the induction coil is wound around the core material disposed in the discharge tube, and power is supplied to the induction coil without connection from the power supply coil. By contacting the inner surface of the discharge tube,
Heat transfer in the axial direction of the discharge tube is performed well. As a result, the efficiency of power transmission to the induction coil in the discharge tube is improved.

According to the third aspect of the present invention, since both ends of the induction coil are connected to each other, a relatively large current can flow through the induction coil.

According to the fourth aspect of the present invention, both ends of the induction coil are released and the open ends are in contact with the tube wall of the discharge tube. Become. As a result, a high voltage required for dielectric breakdown in the discharge tube at the time of starting can be applied, and starting performance is improved.

According to the fifth aspect of the present invention, both ends of the induction coil are opened and the open ends are connected to each other via the capacitor.
By operating in the same manner as a tuning circuit of a radio or the like, the degree of tuning with the power feeding coil can be adjusted.

According to the sixth aspect of the present invention, since the electrode portion of the capacitor is brought into contact with the tube wall of the discharge tube, the maximum voltage generated at both ends of the capacitor can be applied to the tube wall, and the startability is improved. I do.

According to the present invention, the power receiving coil is connected to the induction coil and the power is supplied to the power receiving coil without connection from the power feeding coil. Therefore, the power receiving coil can be enlarged regardless of the diameter of the discharge tube. Power supply efficiency can be improved.

According to the eighth aspect of the present invention, since a capacitor is provided between the power receiving coil and the induction coil, the degree of synchronization with the power feeding coil can be adjusted.

According to a ninth aspect of the present invention, the high frequency power is supplied from the high frequency power supply to the induction coil provided in the electrodeless discharge lamp according to any one of the first to eighth aspects without connection via the power supply coil. Therefore, the same operation as that of the first aspect can be obtained, and the discharge lamp can be turned on with a simple structure.

In the tenth aspect of the present invention, the electrodeless discharge lamp according to any one of the first to seventh aspects and the electrodeless discharge lighting device according to the eighth or ninth aspect are arranged along a conduit through which the fluid flows. Is arranged, it is not necessary to consider the arrangement of the power supply wiring in the holder of the discharge tube, and the degree of freedom in designing the fluid treatment apparatus is increased.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will now be described with reference to the drawings.

FIGS. 1 and 2 show the configuration of an electrodeless discharge lamp and an electrodeless discharge lamp lighting device according to a first embodiment of the present invention. In FIG. 1, a substantially straight electrodeless discharge tube (hereinafter simply referred to as a discharge tube) 1 is formed in a closed cylindrical shape with glass, quartz, or the like, and has a discharge medium such as a rare gas sealed therein. . An induction coil 2 is wound around the discharge tube 1 along the tube axis in the longitudinal direction, and the induction coil 2 has no open ends and is connected to both ends. A power supply coil 3 is concentrically arranged on the outer periphery of the discharge tube 1. Both ends of the feeding coil 3 are connected to a high frequency power supply 4 as shown in FIG.

In the above configuration, when a high-frequency current is supplied from the high-frequency power supply 4 to the power supply coil 3, an induction current flows through the induction coil 2, and the high-frequency induction current excites and emits a discharge medium in the discharge tube 1.

According to the present embodiment, a feed line for supplying a high-frequency current to the induction coil 2 is not required. Therefore, when the discharge tube 1 is installed in a fluid processing device or the like described later, the discharge tube 1 is completely immersed in the conduit. This eliminates the need to drill a hole for guiding the power supply line into the pipeline. Further, it is not necessary to dispose a power supply line along a holding member for holding the discharge tube 1 in the conduit to prevent light emitted from the discharge tube 1 from being blocked, thereby simplifying the structure of the discharge lamp. it can. At this time, by applying a reflective material to the surface coating of the induction coil 2, the output light of the discharge tube 1 can be effectively used. In addition, a relatively large current can flow through the induction coil 2, and a uniform light output can be obtained over the entire length of the discharge tube 1 in a steady state.

FIGS. 3 and 4 show the configuration of an electrodeless discharge lamp and an electrodeless discharge lamp lighting device according to a second embodiment of the present invention. In this embodiment, both ends of the induction coil 2 shown in FIGS. 1 and 2 are opened, and the open ends 2 a and 2 b are in contact with the tube wall of the discharge tube 1. The open ends 2a and 2b may be attached to the tube wall using a tap, or may be adhered to the tube wall using a conductive adhesive.

According to the present embodiment, the induction coil 2 has a function of being regarded as a secondary open state at the time of starting discharge when viewed from the discharge tube 1, and applies a high voltage necessary for dielectric breakdown in the discharge tube 1 at the time of start. It is possible to do. As a result, the startability of the discharge tube 1 can be improved.

FIGS. 5 and 6 show the configuration of a third embodiment of an electrodeless discharge lamp and an electrodeless discharge lamp lighting device according to the present invention. In this embodiment, both ends of the induction coil 2 are opened, and the open ends 2a and 2b are connected to each other via a capacitor 5. Further, the electrode portions 5a and 5b of the capacitor 5
In contact with the tube wall of the discharge tube 1.

According to the present embodiment, by connecting the open ends 2a and 2b of the induction coil 2 via the capacitor 5, the series resonance circuit formed by the induction coil 2 and the capacitor 5 can be connected to a radio or the like. By operating in the same manner as the tuning circuit, the degree of tuning with the power feeding coil 3 can be adjusted. As a result, it is possible to always obtain good startability and lighting state. Further, by contacting the electrode portions 5a and 5b of the capacitor 5 with the tube wall of the discharge tube 1, the maximum voltage generated at both ends of the capacitor 5 can act on the tube wall of the discharge tube 1. As a result, the lighting startability can be further improved.

At this time, the capacity of the capacitor 5 changes with the temperature rise due to the lighting of the discharge tube 1. By selecting a capacitor 5 having an appropriate variation characteristic of the capacity, a good lighting state can be maintained.

FIGS. 7 to 9 show the configuration of the fourth to sixth embodiments of the electrodeless discharge lamp of the present invention. In these embodiments, the discharge tube 1 is constituted by a hollow tube 11 whose both ends are closed, a core member 12 is disposed in the center of the hollow tube 11 in the axial direction, and the induction coil 2 is wound around the core member 12. Things.
The discharge tube 1 shown in FIGS. 7, 8 and 9 corresponds to the discharge tube 1 shown in FIGS. 1, 3 and 5, respectively. 1 has been arranged. The wiring of the induction coil 2 and the configuration of the lighting device shown in FIGS. 7, 8, and 9 are the same as the circuit diagrams shown in FIGS. 2, 4, and 6, respectively.

In the fourth to sixth embodiments, the same operations and effects as those in the first to third embodiments can be obtained. In particular, since the core material 12 around which the induction coil 2 is wound is disposed in the center of the hollow tube 11 in the longitudinal direction, heat transfer in the longitudinal direction of the discharge tube 1 is performed well, and the induction coil 2 Power transmission efficiency to the vehicle. Further, the temperature distribution in the longitudinal direction of the discharge tube 1 is easily homogenized, and the temperature management of the discharge tube 1 is facilitated. As a result, it is possible to easily design the discharge tube 1 so that the luminous efficiency is improved.

The discharge tube 1 shown in each of the above embodiments
May be an illumination light source that emits visible light or a UV light source that emits UV light. Induction coil 2
By applying a reflective material to the surface of the device, the luminous efficiency can be improved.

FIGS. 10, 11 and 12 show the configurations of the first, second and third embodiments of the fluid treatment apparatus of the present invention, respectively.

The liquid processing apparatus shown in FIG. 10 has a structure in which a fluid such as a liquid to be processed flows in and out of a pipe line 21.
The discharge tube 1 shown in any of FIGS. 1 to 9 is arranged in the axial direction. Both ends of the discharge tube 1 are held on the inner periphery of the conduit 21 via holders 22. A feed coil 3 that is magnetically coupled to the induction coil 2 is wound around the outer periphery of the conduit 21.

According to the present embodiment, since there is no need for a power supply line for supplying power to the induction coil 2 from the power supply coil 3, it is not necessary to form a hole for guiding the power supply line into the pipeline 21. In addition, since there is no need to arrange a power supply line along the holder 22, the configuration of the holder 22 can be simplified. Further, since the discharge tube 1 can be completely immersed in the conduit 21, it is not necessary to make the conduit 21 translucent, and all the output light of the discharge tube 1 is used for liquid treatment and sterilization in the conduit 21. Can be used. At the same time, when the discharge tube 1 is a UV light source, even if there is an operator near the discharge tube 1, the worker is not exposed to the UV light, and as a result, the degree of freedom in selecting the installation location of the fluid treatment device is increased. Increase.

The fluid treatment apparatus shown in FIG. 11 has a plurality of discharge tubes 1, for example, two discharge tubes, and is disposed at a position close to the power supply coil 3 on the inner periphery of the conduit 21. Are held parallel to the axial direction.

According to the present embodiment, the induction coil 2 can be arranged close to the power feeding coil 3, and the power feeding from the power feeding coil 3 to the induction coil 2 can be performed well. Further, by arranging the discharge tube 1 along the inner periphery of the conduit 21, the water guide efficiency is improved, and the amount of fluid treatment can be increased.

FIGS. 10 and 11 show a case in which the discharge tube 1 is arranged in an existing pipe 21 to constitute a fluid processing apparatus. In a case where the pipe 21 is newly manufactured, as shown in FIG. In addition, the bore 21 may be provided in the conduit 21. That is, a cylindrical hollow portion 31 is provided in the middle of the pipe line 21 and the hollow portion 3 is formed.
The inner peripheral wall 31a and the outer peripheral wall 31b formed concentrically with the inner peripheral wall 31a were air-tightly and liquid-tightly connected to the pipeline 21, respectively. The discharge tube 1 shown in any of FIGS. 7 to 9 is removably inserted into the inner peripheral wall 31a of the bore 31.
The power supply coil 3 is wound around the outer periphery of the outer peripheral wall 31b. Note that the inner peripheral wall 31a of the bore 31 is made of a translucent member.

According to the present embodiment, since the discharge tube 1 can be freely attached to and detached from the bore 31 of the discharge tube 1, the discharge tube 1 in which a discharge medium is filled according to the purpose of the fluid treatment can be mounted. The specifications of the tuning circuit for the induction coil 2 and the power feeding coil 3 can be easily changed according to the type of the discharge medium.
As a result, fluid processing can be performed efficiently.

In the fluid processing apparatus shown in FIGS. 10 and 11, by applying a reflecting material to the inner surface of the conduit 21 and the surface of the induction coil 2, it is possible to effectively use the radiated light from the discharge tube 1. it can.

FIGS. 13 and 14 show the configuration of an embodiment of an electrodeless discharge lamp according to another invention of the present invention. In these drawings, parts corresponding to the parts of the embodiment shown in FIGS. 1, 2 and 13 are denoted by the same reference numerals, and the description thereof will be appropriately omitted. In the present embodiment, a power receiving coil 41 connected to the induction coil 2 is provided in the pipe 21 of the liquid processing apparatus, and a power supply coil 42 is provided outside the pipe 21 so as to face the power receiving coil 41. Receiving coil 41
The power supply coil 42 is formed in a spiral shape, and both ends are connected to the induction coil 2 and the high-frequency power supply 4, respectively.

According to the present embodiment, even when the size of the discharge tube 1 is small, the power receiving coil 41 and the power feeding coil 42
By increasing the diameter of the power supply, the power supply efficiency can be improved.

FIG. 14 shows wiring in the present embodiment. (A) shows a case where the capacitor 5 as a matching circuit is not arranged between the power receiving coil 41 and the induction coil 2, but by arranging the capacitor 5 between them as shown in (b) to (g), The degree of synchronization between the induction coil 2 and the power supply coil 41 can be adjusted.

FIG. 5B shows an arrangement in which the capacitor 5 is disposed between one end of the receiving coil 41 and one end of the induction coil 2.
(C) is a view in which the capacitor 5 is disposed between both ends of the receiving coil 41, and (d) is a view in which another capacitor 5 is disposed between one end of the receiving coil 41 and one pole of the capacitor 5 in (c). , (E) shows the state of the induction coil 2 in (c).
Another capacitor 5 between one end of the
(F) in (c), another capacitor 5 is disposed between one pole of the capacitor 5 and one end of the power receiving coil 41 and one end of the induction coil 2,
(G) is different from (b) in that different capacitors 5 are respectively arranged between both poles of the capacitor 5 and the other end of the power receiving coil 41 and the other end of the induction coil 2.

The discharge tube 1 arranged in the above embodiment may have a hollow tube 11 in which a core material 12 around which an induction coil 2 is wound is arranged as shown in FIG. As in the case of the first invention, a reflective material may be applied to the inner surface of the conduit 21 and the surfaces of the induction coil 2 and the power receiving coil 41.

[0053]

According to the first aspect of the present invention, the power supply to the induction coil is performed without the power supply wire and the power supply coil is not connected. Therefore, it is necessary to arrange the power supply line in the holding means of the discharge tube. And the structure can be simplified.
In particular, when used in a fluid processing apparatus, it is not necessary to form a hole for guiding a power supply line into a pipeline.

According to the second aspect of the present invention, the induction coil is wound around the core material disposed in the discharge tube, and power is supplied to the induction coil without connection from the power supply coil. Is in contact with the inner surface of the discharge tube, so that heat transfer in the axial direction of the discharge tube is favorably performed. As a result, the efficiency of power transmission to the induction coil in the discharge tube is improved.

According to the third aspect of the present invention, since both ends of the induction coil are connected to each other, a relatively large current can flow through the induction coil, and a uniform light output can be obtained over the entire length of the discharge tube in a steady state. Can be

According to the fourth aspect of the present invention, since both ends of the induction coil are released and the open ends are in contact with the tube wall of the discharge tube, a high voltage required for dielectric breakdown in the discharge tube at the time of starting can be applied. And startability is improved.

According to the fifth aspect of the present invention, since both ends of the induction coil are opened and the open ends are connected to each other via the capacitor, it is possible to adjust the degree of tuning of the feeding coil with the induction coil, and it is always good. It is possible to obtain a good startability and a lighting state.

According to the sixth aspect of the present invention, since the electrode portion of the capacitor is brought into contact with the tube wall of the discharge tube, the maximum voltage generated at both ends of the capacitor can be applied to the tube wall, and the lighting start-up performance can be improved. Can be improved.

According to the seventh aspect of the present invention, the power receiving coil is connected to the induction coil, and power is supplied to the power receiving coil without connection from the power feeding coil. Therefore, even when the size of the discharge tube is small, the power receiving coil and the power feeding coil are connected. The power supply efficiency can be improved by increasing the diameter of the coil.

According to the eighth aspect of the present invention, since a capacitor is provided between the power receiving coil and the induction coil, the degree of tuning between the induction coil and the power feeding coil can be adjusted.

According to the ninth aspect of the present invention, since the high frequency power is supplied to the induction coil from the high frequency power supply via the power supply coil without being connected, the discharge lamp can be turned on with a simple structure.

According to the tenth aspect of the present invention, the electrodeless discharge lamp according to any one of the first to eighth aspects and the electrodeless discharge lamp according to the ninth aspect are arranged along the pipeline of the fluid treatment apparatus into which the fluid flows. Since the lamp lighting device is arranged, there is no need to arrange a power supply line penetrating through the pipeline, and the degree of freedom in designing the fluid treatment device increases.

[Brief description of the drawings]

FIG. 1 is a front view showing a configuration of a first embodiment of an electrodeless discharge lamp and an electrodeless discharge lamp lighting device of the present invention.

FIG. 2 is a circuit diagram of FIG. 1;

FIG. 3 is a front view illustrating a configuration of a second embodiment of the electrodeless discharge lamp and the electrodeless discharge lamp lighting device of the present invention.

FIG. 4 is a circuit diagram of FIG. 3;

FIG. 5 is a front view showing the configuration of a third embodiment of the electrodeless discharge lamp and the electrodeless discharge lamp lighting device of the present invention.

FIG. 6 is a circuit diagram of FIG. 5;

FIG. 7 is a sectional view showing the configuration of a fourth embodiment of the electrodeless discharge lamp of the present invention.

FIG. 8 is a sectional view showing a configuration of a fifth embodiment of the electrodeless discharge lamp of the present invention.

FIG. 9 is a sectional view showing a configuration of a sixth embodiment of the electrodeless discharge lamp according to the present invention.

FIG. 10 is a sectional view showing the configuration of the first embodiment of the fluid treatment apparatus of the present invention.

FIG. 11 is a cross-sectional view illustrating a configuration of a second embodiment of the fluid treatment apparatus of the present invention.

FIG. 12 is a cross-sectional view showing a configuration of a third embodiment of the fluid processing apparatus of the present invention.

FIG. 13 is a sectional view showing a configuration of an embodiment of an electrodeless discharge lamp according to another invention of the present invention.

FIG. 14 is a circuit diagram of one embodiment of the electrodeless discharge lamp of FIG. 13 and an electrodeless discharge lamp lighting device for lighting the discharge lamp.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electrodeless discharge tube 2 induction coil 3, 42 feeding coil 4 high frequency power supply 5 capacitor 12 core material 21 conduit 41 receiving coil

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kozo Uemura, Inventor 4-3-1 Higashi-Shinagawa, Shinagawa-ku, Tokyo Inside Toshiba Lighting & Technology Corporation (72) Inventor Akihiro Inoue 4-3-1, Higashi-Shinagawa, Shinagawa-ku, Tokyo Toshiba Lighting & Technology Corporation (72) Inventor Kazuhiko Yoshikawa 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Toshiba Lighting Corporation (72) Inventor Akihiro Yonezawa 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Toshiba Lighting & Technology Corporation Inside (72) Inventor Keisuke Kukan Toshiba Litec Co., Ltd. 4-3-1 Higashi-Shinagawa, Shinagawa-ku, Tokyo Toshiba Lighting Corporation (72) Inventor Shigehisa 4-3-1 Higashi-Shinagawa, Shinagawa-ku, Tokyo Toshiba Lighting Corporation (72) Inventor Yoshio Nakayama 1-1-1 Shibaura, Minato-ku, Tokyo Inside Toshiba Corporation Head Office

Claims (10)

[Claims] An electrodeless discharge tube in which a discharge medium is sealed;
An electrodeless device comprising: an induction coil disposed in the vicinity of an electrodeless discharge tube; and a power supply coil disposed so as to perform unconnected power supply without providing power supply wiring to the induction coil. Discharge lamp. 2. A non-electrode discharge tube comprising: a core material disposed axially in an electrodeless discharge tube; and an induction coil wound around the core material in the electrodeless discharge tube. Electrode discharge lamp. 3. The electrodeless discharge lamp according to claim 1, wherein both ends of the induction coil are connected to each other. 4. The electrodeless discharge lamp according to claim 1, wherein both ends of the induction coil are open, and the open ends are in contact with the tube wall of the electrodeless discharge tube. 5. The electrodeless discharge lamp according to claim 4, wherein the open ends of the induction coils are connected to each other via a capacitor. 6. The electrodeless discharge lamp according to claim 5, wherein an electrode portion of the condenser is in contact with a tube wall of the electrodeless discharge tube. 7. An electrodeless discharge tube in which a discharge medium is sealed;
An induction coil disposed in the vicinity of the electrodeless discharge tube; a power receiving coil connected to the induction coil; disposed so as to face the power receiving coil and supply power without connection without providing a power supply wiring to the power receiving coil. An electrodeless discharge lamp, comprising: 8. The electrodeless discharge lamp according to claim 7, wherein a matching circuit comprising at least one capacitor is provided between the power receiving coil and the induction coil. 9. An electrodeless discharge lamp lighting device, comprising: the electrodeless discharge lamp according to claim 1; and a high-frequency power supply for supplying high-frequency power to a power supply coil. 10. A conduit through which a fluid flows in and out; and an electrodeless discharge lamp according to claim 1 and a lighting device for an electrodeless discharge lamp according to claim 9, which are arranged along the conduit. A fluid treatment device comprising: