JPH09237608A - Electrodeless discharge lamp, light treating device, sterilizer device and water treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently apply irradiation of an ultraviolet-ray even at a low pressure. SOLUTION: A discharge space 2 is formed in a hollow part in the inside of a permeable vessel 1. Any starting gas of argon, krypton, xenon or neon and any of iodine, fluorine, chlorine or bromine are sealed with mercury in this discharge space 2. A helical electromagnetic induction coil 6 is wound to the periphery of the permeable vessel 1 of an electrodeless discharge lamp 5. A current is supplied to the electromagnetic induction coil 6 from a high frequency generating device, a discharge is generated in the discharge space 2 by high frequency energy, irradiation of an ultraviolet-ray of 254nm wavelength of strong sterilizing and purifying action is applied. Silver is easily coupled with halogen rather than oxidized, mercury halide coupled with halogen is easily vaporized due to a high vapor pressure, to be again seperated in an arc and active as a mercury atom, so as to prevent mercury oxide from sticking to an internal surface of the permeable vessel 1, generation of its blackening is prevented.

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 having a low mercury vapor pressure, an electrodeless discharge lamp, a light treatment device, a sterilization device and a water treatment device.

[0002]

2. Description of the Related Art Conventionally, as an electrodeless discharge lamp, for example, a structure described in Japanese Patent Application Laid-Open No. 6-310102 is known.

In the structure described in Japanese Patent Laid-Open No. 6-310102, a mixed gas of chlorine and xenon is enclosed in the hollow portion of the double-tube hollow cylinder at a pressure of 450 Torr, and the double-tube hollow cylinder is surrounded. An electrode is provided, and by applying a voltage to this electrode, ultraviolet rays having a wavelength of 308 nm are irradiated.

[0004]

However, the structure disclosed in Japanese Patent Laid-Open No. 6-310102 is a high pressure gas, and has a problem that it cannot be applied to a low pressure gas.

On the other hand, a mercury vapor discharge lamp using low-pressure mercury vapor with low mercury vapor is used for various sterilization, air purification, water treatment, etc. because it efficiently irradiates a 254 nm germicidal ray. Those using mercury vapor are desired.

Further, when the amount of mercury is small, the amount of ultraviolet irradiation is small even when a large current is supplied, and conversely, when mercury is enclosed more than necessary, mercury adheres to the tube wall and the amount of ultraviolet transmission decreases.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide an electrodeless discharge lamp, an electrodeless discharge lamp, a light treatment device, a sterilization device and a water treatment device which efficiently irradiate ultraviolet rays even at a low pressure. To aim.

[0008]

An electrodeless discharge lamp according to claim 1 is a translucent container; mercury enclosed in the translucent container at a mercury vapor pressure of 0.1 to 3 pa; and argon ( Ar), krypton (Kr), xenon (Xe) and / or neon (Ne) and a starting gas enclosed in a translucent container; Fluorine (F) enclosed in the translucent container; At least one of chlorine (Cl), bromine (Br) and iodine (I) is provided, and the potential gradient of the discharge space can be increased by at least one of fluorine, chlorine, bromine and iodine. In addition to efficiently irradiating ultraviolet rays having a wavelength of 254 nm without requiring a large current and preventing mercury oxide from adhering to the translucent container, the ultraviolet rays are efficiently irradiated even at low pressure.

In the electrodeless discharge lamp according to the present invention, at least one of fluorine (F), chlorine (Cl), bromine (Br) and iodine (I) has a unit internal volume of 1 cc of the transparent container. per to 5 × 10 ^-4 no one is ^{4 × 10 -2 mg, 5 ×} 10 becomes unstable discharge hardly become or discharge is less than ^-4, on the contrary, from 4 × 10 ^-2 mg If the number of discharges increases, discharge will occur but the arc will become unstable.

The electrodeless discharge lamp according to claim 3 is the electrode discharge lamp according to claim 1.
Alternatively, the electrodeless discharge lamp according to the item 2; and an electromagnetic induction coil provided outside the light-transmissive container are provided, and each function is achieved and the electrodeless lighting is performed.

The electrodeless discharge lamp according to claim 4 is the electrode discharge lamp according to claim 3.
In the described electrodeless discharge lamp, the translucent container is formed in a longitudinal shape, and the electromagnetic induction coil is formed in a spiral shape on the outer periphery of the translucent container, and ultraviolet rays are easily formed in a longitudinal shape.

The electrodeless discharge lamp according to claim 5 is the electrode discharge lamp according to claim 3.
In the electrodeless discharge lamp described above, the transparent container is formed in a longitudinal shape, and the electromagnetic induction coil is formed by a plurality of rings on the outer circumference of the transparent container, and ultraviolet rays are easily formed in a longitudinal shape.

An optical processing apparatus according to claim 6 comprises a tank for containing a fluid; and the electrodeless discharge lamp according to claim 4 for optically processing the fluid contained in the tank, The fluid is irradiated with ultraviolet rays by the long ultraviolet rays.

A sterilizing apparatus according to a seventh aspect is provided with the electrodeless discharge lamp according to the fourth or fifth aspect, which sterilizes an object, and sterilizes efficiently with ultraviolet rays having a wavelength of 254 nm.

In the water treatment apparatus according to claim 8, the transparent container has an elongated double-tube hollow cylindrical shape, and the electrodeless discharge lamp according to claim 1; And an electromagnetic induction coil provided outside the electrodeless discharge lamp, and the ultraviolet ray is longitudinally provided in the flow passage inside the double-tube hollow cylindrical electrodeless lamp. And efficiently irradiate ultraviolet rays from the surroundings, so water treatment is surely performed.

According to a ninth aspect of the present invention, in the water treatment apparatus according to the eighth aspect, the flow passage projects in the longitudinal direction from the electrodeless discharge lamp, and connectors are attached to both ends of the flow passage. , Easy to connect upstream and downstream of the flow passage.

A water treatment device according to a tenth aspect of the present invention is a pipe body having a flow passage formed therein; and the water treatment device is located in the flow passage.
Alternatively, the electrodeless discharge lamp according to the item 2; and an electromagnetic induction coil provided outside the tubular body are provided to longitudinally irradiate the flow passage in the tubular body with ultraviolet rays and efficiently irradiate the ultraviolet rays from the surroundings. Therefore, ensure water treatment.

The water treatment device according to claim 11 is the water treatment device according to claim 1.
In the water treatment device described in 0, the translucent container of the electrodeless discharge lamp is a long double-tube hollow cylindrical shape, and effectively uses ultraviolet rays around and inside the electrodeless discharge lamp. .

A water treatment device according to claim 12 is the water treatment device according to claim 1.
In the water treatment device described in 0 or 11, the tubular body is formed of an electrically insulating material having no translucency, and reliably irradiates the inside of the tube with ultraviolet light without irradiating the outside of the tube with ultraviolet light.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the water treatment apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view in which a part of the electrodeless discharge lamp is cut away. In FIG. 1, reference numeral 1 is a hollow translucent container made of quartz glass or translucent ceramic. A discharge space 2 is formed in a hollow portion inside the sex container 1. The discharge space 2 has a tube inner diameter of 25 mm, a total length of 100 cm, 100 mg of mercury (Hg), 67 Pa of argon (Ar), and 2 mg of iodine (I).
The mercury vapor pressure is in the range of 0.1 to 3 Pa. Further, in the discharge space 2, instead of or together with argon, krypton (Kr), xenon (X
A starting gas of at least e) or neon (Ne) may be filled. Further, instead of or together with iodine, for example, halogen (VII), chlorine (Cl) or bromine (B) of the VIIb of the periodic table of elements is used.
At least one of r) may be enclosed. It should be noted that these fluorine, chlorine, bromine and iodine are contained in the transparent container 1
It is set to be 5 × 10 ⁻⁴ to 4 × 10 ⁻² mg per 1 cc of the internal volume of the discharge space 2. That is, since there is no electrode, barium (Ba), calcium (Ca), or strontium (Sr) -based oxide, which is an electron emitting substance, does not exist in the discharge space 2.
The halogen group can be optionally encapsulated.

A photocatalyst layer of TiO ₂ (titanium oxide, titania), which is a substance having a photocatalytic action, is formed on the outer peripheral surface of the translucent container 1.

Further, at both ends of the translucent container 1, holding parts 3 and 4 are formed when the device is mounted on a device (not shown),
The electrodeless discharge lamp 5 is formed.

Furthermore, an electromagnetic induction coil 6 formed in a spiral shape is wound around the outer circumference of the transparent container 1 of the electrodeless discharge lamp 5 to form an electrodeless discharge lamp 7.

When a current is supplied to the electromagnetic induction coil from a high frequency generator (not shown), high frequency energy is generated in the electromagnetic induction coil, and the high frequency energy causes discharge such as an arc in the discharge space 2 to disinfect and purify. Of light having a strong wavelength of 254 nm and including cylindrical ultraviolet rays.

When the photocatalyst layer receives the ultraviolet rays, it deodorizes or deodorizes the surrounding atmosphere and decomposes organic components in the atmosphere.

That is, when light in a wavelength range having energy larger than the band gap (forbidden band) of a semiconductor is irradiated, electrons and electron holes are generated in the semiconductor, causing an electron transfer reaction. For example, TiO ₂ is about 3.0 eV
Semiconductor having a band gap of 410 nm and having an energy larger than this band gap.
When the following so-called ultraviolet rays are irradiated, electrons and electron holes (holes) are generated in TiO ₂ , and the movement of the holes causes an electron transfer reaction on the surface. In this electron transfer reaction, the holes have the power to pull out electrons corresponding to the energy of the band gap, that is, the oxidizing power, and the oxidizing power of the holes changes the substance attached or contacted to the surface of TiO _2. Let me.

As described above, since TiO ₂ produces a strong oxidizing power when it receives ultraviolet rays, it is possible to remove substances such as acetaldehyde, methyl mercaptan, hydrogen sulfide or ammonia attached to the TiO ₂ surface of the transparent container 1. Since oxidization and decomposition are promoted, cleaning with dust or dust due to air pollution can be facilitated.

In the above embodiment, when the electromagnetic induction coil 6 is supplied with a current of 4.8 A, the rated output is 500.
W, and the UV output is more than 30% of the input, 163W
As shown in FIG. 2, in the above-described embodiment A, the efficiency is sufficiently improved as compared with the conventional electrode-type discharge lamp B, and the efficiency difference becomes large particularly as the input density increases.

When the electrodeless discharge lamp 7 of the above-described embodiment is continuously lit, as shown in FIG. 3, in the above-mentioned embodiment A, the wavelength of 25 is smaller than that of the conventional electrode type discharge lamp B.
The decrease with time of the UV irradiation amount of 4 nm is small. That is, mercury is more likely to combine with halogen than to be oxidized, and mercury halide combined with halogen is more likely to evaporate due to its higher vapor pressure, and is separated again in the arc to serve as a mercury atom, so that mercury oxide is transparent. There is no blackening of the translucent container 1 due to adhesion to the inner surface of the transparent container 1, and
There is almost no decrease in the UV irradiation rate at the wavelength of 4 nm.

Further, fluorine, chlorine, bromine and iodine are contained in an amount of 5 × 10 ^-4 per 1 cc of the internal volume of the translucent container.
If it is less than 4, it becomes difficult to discharge or the discharge becomes unstable. On the contrary, if it is more than 4 × 10 ^-2 mg, the discharge becomes stable but the arc becomes unstable, so 5 × 10 ^-4 to 4
Make it x 10 ^-2 mg.

Next, another embodiment will be described with reference to FIG.

FIG. 4 is an explanatory view showing a water treatment device, and the embodiment shown in FIG. 4 is a double tube hollow cylindrical light-transmitting container.
The translucent container 11 has a cylindrical outer cylinder 12 whose both ends are closed. The inner cylinder is coaxial with the outer cylinder 12 and has a smaller diameter than the outer cylinder 12 and is longer than the outer cylinder 12. 13 is attached airtight,
A discharge space 14 is formed between the outer cylinder 12 and the inner cylinder 13, and the discharge space 14 is filled with the same substance as that of the embodiment shown in FIG.

A photocatalyst layer is formed on the inner surface of the inner cylinder 13 of the transparent container 11, and a water flow passage is formed on the inner surface of the inner cylinder 13.
15 is formed and constitutes an electrodeless discharge lamp 16.

Further, an electromagnetic induction coil 17 constituted by a plurality of rings 17a having an inner diameter larger than the outer diameter of the transparent container 11 is mounted on the outer side of the transparent container 11, and an electrodeless discharge lamp is provided.
Make up nineteen.

Further, connectors 21 and 21 for connection are attached to both ends of the inner cylinder 13, respectively, and the connector 21 on one end side is attached.
A supply pipe 24 connected to the water tank 22 via a valve 23 is connected to the, and a drain pipe 25 is connected to the connector 21 on the other end.

The basic operation is the same as that of the embodiment shown in FIG. 1, but a high-frequency generator serving as a high-frequency power source.
18 to multiple rings 17a, 17a, 17a electromagnetic induction coils
When a high frequency of 13.56 MHz, for example, is supplied to the high frequency generator 18 from the high frequency generator 17, high frequency energy is generated in the electromagnetic induction coil 17, and the discharge space is generated by the high frequency energy.
At 14, an electric discharge such as an arc is generated, and light including cylindrical ultraviolet rays having a wavelength of 254 nm, which has a strong sterilizing and purifying action, is irradiated. A high frequency is individually supplied from the high frequency generator 18 to each ring 17a 1, 17a 2, 17a of the electromagnetic induction coil 17.

In this state, when the valve 23 is opened to an appropriate amount, water begins to flow from the water tank 22 and flows through the supply pipe 24 to the flow passage 15
When the water flows into the inside and is irradiated with ultraviolet rays having a wavelength of 254 nm, the DNA of the bacteria contained in the water in the flow passage 15 is destroyed and killed, sterilized and purified, and drained from the drain pipe 25. By sterilizing and purifying with ultraviolet rays in this way, the generation of trihalomethane due to chlorine injection as in the conventional case is eliminated, and environmental pollution when discharged to a river or the like can be prevented.

When the photocatalyst layer in the inner cylinder 13 receives ultraviolet rays, it deodorizes or deodorizes the inner surface of the inner cylinder, decomposes the organic components in the atmosphere, etc., and at the same time, monatomic (O) or excited oxygen. Active oxygen such as (O ^* ) is generated,
It also purifies water.

By selecting and using an arbitrary number of the plurality of rings 17a, the light can be adjusted depending on the degree of contamination of the water to be treated, the irradiation amount of ultraviolet rays can be changed, and energy can be efficiently saved. be able to.

Further, by providing the connectors 21 at both ends of the inner cylinder 13 of the transparent container 11, it is possible to easily connect to another tube.

The water treatment using the above embodiment can be carried out at about 50t per hour, and after 8500 hours, which is equivalent to one year, the water can be efficiently drained without causing environmental pollution at a low running cost. As shown in FIG. 5, in Embodiment A, the sterilization effect did not decrease with time as in the conventional device B.

Further, another embodiment will be described with reference to FIG.

FIG. 6 is an explanatory view showing another water treatment apparatus. The embodiment shown in FIG. 6 has a water pipe 31 to be treated which does not transmit light, such as alumina porcelain or boron nitride.
An electrodeless discharge lamp 32 is coaxially housed in the water pipe 31 to be treated. This electrodeless discharge lamp 32 is a transparent container.
The translucent container 33 has a cylindrical outer cylinder 34 with both ends closed, and an inner cylinder coaxial with the outer cylinder 34 and having a smaller diameter than the outer cylinder 34 and longer than the outer cylinder 34. 35 is attached airtightly,
A discharge space 36 having a total length of about 50 cm is formed between the outer cylinder 34 and the inner cylinder 35, and the discharge space 36 is filled with the same substance as that of the embodiment shown in FIG.

A photocatalyst layer is formed on the inner surface of the inner cylinder 35 of the transparent container 33, and a water flow passage is formed on the inner surface of the inner cylinder 35.
37 is formed, and a water flow path 38 is formed between the treated water pipe 31 and the electrodeless discharge lamp 32.

Further, a spiral electromagnetic induction coil 39 of about 3 to 5 turns having an inner diameter larger than the outer diameter of the transparent container 33 is mounted on the outer side of the transparent container 33, and an electrodeless discharge lamp is provided.
The electrodeless discharge lamp 40 is constituted by 32 and the electromagnetic induction coil 39.

A cylindrical resin nozzle 41 is fitted and attached near one end of the water pipe 31 to be treated.
An inner insertion passage 42 that is inserted into the inner flow passage 37 is formed in 41, and an outer insertion passage 43 that is inserted into the outer flow passage 38 is formed.
Is formed. Further, a holding recess 44 for holding one end of the inner cylinder 35 of the electrodeless discharge lamp 32 is formed between the inner insertion passage 42 and the outer insertion passage 43, and the inner recess of the electrodeless discharge lamp 32 is formed in the holding recess 44. 35 is inserted and held.

Further, a disk-shaped centering jig 45 is fitted and attached in the vicinity of the other end of the water pipe 31 to be treated, and the centering jig 45 has an inner insertion hole through which the inner flow passage 37 is inserted. 46 is formed and an outer insertion hole 47 that is inserted into the outer flow passage 38 is formed. Further, an electrodeless discharge lamp is provided between the inner insertion hole 46 and the outer insertion hole 47.
A holding hole 48 for holding the other end of the inner tube 35 of 32 is formed, and the inner tube 35 of the electrodeless discharge lamp 32 is inserted and held in the holding hole 48.

Water-tight caps 51 and 52 for closing are attached to both ends of the water pipe 31 to be treated, and the cap 51 has a supply pipe connected to a water tank (not shown) through a valve 53. 54 is connected to the other end cap 52
A drain pipe 55 is connected to the.

The basic operation is the same as that of the embodiment shown in FIG. 4, but when a high frequency is supplied to the electromagnetic induction coil 39 from a high frequency generator (not shown), the electromagnetic induction coil 39
High-frequency energy is generated in 39, and this high-frequency energy causes discharge such as arc in the discharge space 36, sterilization,
Irradiation is performed with light including a cylindrical ultraviolet ray having a wavelength of 254 nm, which has a strong cleaning effect. In this case, in terms of surface area ratio, the amount of ultraviolet rays emitted from the discharge space 36 is much larger on the side of the flow passage 38 than on the side of the flow passage 37. Since the water pipe 31 to be treated is translucent, unnecessary portions are prevented from being irradiated with ultraviolet rays to prevent adverse effects on the human body.

In this state, when the valve 53 is opened to an appropriate amount, water starts to flow from the water tank, the nozzle 41 distributes the appropriate amount in the flow passage 37 and the flow passage 38, and the flow pipe 37 flows from bottom to top via the supply pipe 54. , 38, and irradiate this water with ultraviolet rays having a wavelength of 254 nm, D of bacteria contained in the water in the flow passages 37, 38
The NA is destroyed and killed, sterilized, purified, and drained from the drain pipe 55.

Further, in the photocatalyst layer in the inner cylinder 35, when it receives ultraviolet rays, it deodorizes or deodorizes the inner surface of the inner cylinder, decomposes the organic components in the atmosphere, etc., and at the same time, monatomic (O) or excited oxygen. Active oxygen such as (O ^* ) or ozone (O ₃ ) is generated to purify water.

The same amount of water treatment as in the embodiment shown in FIG. 4 can be carried out in the same manner, and the same effect can be obtained even if the embodiment shown in FIG. 6 is used horizontally.

Further, in the embodiment shown in FIG. 6, the same effect can be obtained by disposing the electrodeless discharge lamp as shown in FIG. 1 which is not a double pipe in the water pipe 31 to be treated. it can.

Further, an ellipsoidal inner shell is similarly housed in the ellipsoidal outer shell to form a discharge space between the outer shell and the inner shell,
The inner shell can be inserted into the outside, the electrodeless discharge lamp with the electromagnetic induction coil installed in the inner shell is housed in the water pipe to be treated, and a flow path is formed between the outer shell and the water pipe to be treated. Water treatment in the flow passage outside the shell may be performed.

Furthermore, in the embodiment shown in FIG. 1, even if a water pipe having a light-transmitting property is spirally arranged in parallel with the electromagnetic induction coil and the water flowing in the water pipe is treated, the same result is obtained. The effect of can be obtained.

In any case, the same effect can be obtained by using any one of a spiral coil and a coil using a plurality of rings as the electromagnetic induction coil.

Although the water treatment has been described, the same effect can be obtained not only by using water but also by forming a sterilizing device or another optical treatment device using ultraviolet rays by using a fluid such as another liquid or gas. be able to.

Further, by making the portion where the irradiation of the ultraviolet ray is unnecessary opaque, the irradiation of the ultraviolet ray to the unnecessary portion is prevented.

[0060]

According to the electrodeless discharge lamp of the first aspect, the potential gradient of the discharge space can be increased by at least one of fluorine, chlorine, bromine and iodine, and a large current is required. In addition to efficiently irradiating ultraviolet rays having a wavelength of 254 nm and preventing mercury oxide from adhering to the translucent container, it is possible to efficiently irradiate ultraviolet rays even at low pressure.

According to the electrodeless discharge lamp of the second aspect, if the fluorine, chlorine, bromine and iodine are less than 5 × 10 ⁻⁴ per unit volume of the transparent container, it becomes difficult to discharge. Discharge becomes unstable, on the contrary, 4 × 10
^If it is more than ^-2 mg, the arc is unstable although the discharge is generated. Therefore, the discharge is stabilized by setting it to 5 x 10 ^-4 to 4 x 10 ^-2 mg.

According to the electrodeless discharge lamp of the third aspect, the respective effects can be obtained and the electrodeless lighting can be achieved.

According to the electrodeless discharge lamp of the fourth aspect, in addition to the electrodeless discharge lamp of the third aspect, the transparent container is formed in a longitudinal shape, and the electromagnetic induction coil is provided on the outer periphery of the transparent container. Since it is formed in a spiral shape, ultraviolet rays can be easily formed in a long shape.

According to the electrodeless discharge lamp of the fifth aspect, in addition to the electrodeless discharge lamp of the third aspect, the transparent container is formed in a longitudinal shape, and the electromagnetic induction coil is provided on the outer periphery of the transparent container. Since it is formed of a plurality of rings, it is possible to easily form ultraviolet rays in a longitudinal shape.

According to the sixth aspect of the present invention, there is provided the electrodeless discharge lamp according to the fourth or fifth aspect of the present invention, in which the fluid contained in the tank is subjected to optical treatment. Can be irradiated with ultraviolet rays.

According to the sterilizer of claim 7, the electrodeless discharge lamp according to claim 4 or 5 for sterilizing an object is provided, so that it is possible to efficiently sterilize with an ultraviolet ray having a wavelength of 254 nm.

According to the water treatment apparatus of the eighth aspect, the flow passage inside the tubular shape of the double-tube hollow cylindrical electrodeless lamp is longitudinally irradiated with ultraviolet rays, and the ultraviolet rays are efficiently irradiated from the surroundings. Can reliably treat water.

According to the water treatment apparatus of the ninth aspect, in addition to the water treatment apparatus of the eighth aspect, the flow passage projects in the longitudinal direction from the electrodeless discharge lamp, and connectors are attached to both ends of the flow passage. , Can be easily connected to the upstream side and the downstream side of the flow passage.

According to the water treatment apparatus of the tenth aspect, the flow passage in the pipe is longitudinally irradiated with ultraviolet rays and efficiently irradiated with ultraviolet rays from the surroundings, so that the water treatment can be reliably performed.

According to the water treatment apparatus of the eleventh aspect, in addition to the water treatment apparatus of the tenth aspect, since the translucent container of the electrodeless discharge lamp is a long double-tube hollow cylinder,
It is possible to effectively use ultraviolet rays around and inside the electrodeless discharge lamp.

According to the water treatment apparatus of the twelfth aspect, in addition to the water treatment apparatus of the tenth or eleventh aspect, since the tubular body is formed of an electrically insulating material having no translucency, It is possible to reliably irradiate the inside of the tube with ultraviolet light without irradiating it with ultraviolet light.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of an electrodeless discharge lamp of the present invention.

FIG. 2 is a graph showing the relationship between input density and conversion efficiency.

FIG. 3 is a graph showing a relationship between a lighting time and a UV maintenance rate.

FIG. 4 is an explanatory view showing the above water treatment device.

FIG. 5 is a graph showing the relationship between sterilization ability and use time.

FIG. 6 is an explanatory view showing another water treatment device of the above.

[Explanation of symbols]

 1,11,33 Transparent container 5,16,32 Electrodeless discharge lamp 6,17,39 Electromagnetic induction coil 7,19,40 Electrodeless lamp 15,37,38 Flow path 22 Connector 24 Water tank 31 Water to be treated tube

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kozo Uemura 4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Inside Toshiba Lighting & Technology Corporation

Claims (12)

[Claims] 1. A transparent container; mercury enclosed in the transparent container at a mercury vapor pressure of 0.1 to 3 pa; argon (Ar), krypton (Kr), xenon (Xe) and neon ( Ne) and a starting gas enclosed in a translucent container containing at least one of Ne; Fluorine (F), chlorine (Cl), bromine (Br) and iodine (I) enclosed in the translucent container. An electrodeless discharge lamp comprising: at least one of the above; 2. Fluorine (F), chlorine (Cl), bromine (B
At least one of r) and iodine (I) is 5 × 10 ⁻⁴ to 4 per unit internal volume of the transparent container of 1 cc.
An electrodeless discharge lamp characterized by having a dose of × 10 ^-2 mg. 3. An electrodeless discharge lamp comprising: the electrodeless discharge lamp according to claim 1; and an electromagnetic induction coil provided outside the translucent container. 4. The electrodeless discharge lamp according to claim 3, wherein the translucent container is formed in an elongated shape, and the electromagnetic induction coil is formed in a spiral shape on the outer periphery of the translucent container. 5. The electrodeless discharge lamp according to claim 3, wherein the translucent container is formed in an elongated shape, and the electromagnetic induction coil is formed by a plurality of rings on the outer circumference of the translucent container. 6. An optical processing apparatus comprising: a tank containing a fluid; and the electrodeless discharge lamp according to claim 4, which optically processes the fluid contained in the tank. 7. A sterilizing apparatus comprising: the electrodeless discharge lamp according to claim 4, which sterilizes an object. 8. The electrodeless discharge lamp according to claim 1 or 2, wherein the translucent container has an elongated double-tube hollow cylindrical shape; and a flow passage formed inside the cylindrical shape of the electrodeless discharge lamp. An electromagnetic induction coil provided outside the electrodeless discharge lamp; 9. The water treatment apparatus according to claim 8, wherein the flow passage projects in the longitudinal direction from the electrodeless discharge lamp, and connectors are attached to both ends of the flow passage. 10. A tube body having a flow passage formed therein; an electrodeless discharge lamp according to claim 1 or 2, which is located in the flow passage; and an electromagnetic induction coil provided outside the pipe body. A water treatment device characterized by being provided. 11. The water treatment device according to claim 10, wherein the translucent container of the electrodeless discharge lamp has a long double-tube hollow cylindrical shape. 12. The water treatment device according to claim 10, wherein the tubular body is formed of an electrically insulating material having no light transmitting property.