JP3596463B2 - Electrodeless discharge lamp device and electrodeless discharge lamp - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electrodeless discharge lamp device and an electrodeless discharge lamp.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an electrodeless discharge lamp device having a high internal pressure during lighting has been used for general lighting applications and UV light sources for curing, because it has no electrodes, has a long life, and can extract ultraviolet rays efficiently. However, the conventional electrodeless discharge lamp device is a so-called tube wall stable discharge in which the arc follows the tube wall of the discharge vessel, and forcible cooling is necessary because a heat load is applied to the tube wall of the discharge vessel. . Further, the arc discharge cannot be focused on the center of the lamp, making it impossible to use a point light source at all, and cannot be used as a high-brightness point light source for a projector or the like.
[0003]
On the other hand, Japanese Patent Application Laid-Open No. 62-243295 discloses a lighting device using an electrodeless fluorescent lamp. This is a technique for an electrodeless discharge lamp of low pressure discharge such as a fluorescent lamp. There is disclosed a technology in which when the intensity of the high-frequency electromagnetic field is small, the light-emitting area is small, and when the intensity of the high-frequency electromagnetic field is increased, the light-emitting area is increased. However, in an electrodeless discharge lamp that has a high internal pressure when lit, even if the intensity of the high-frequency electromagnetic field is simply increased or decreased as in the technique described in this publication, the high-pressure plasma emission region of the lamp is separated from the tube wall. It was impossible at all to collect the light in the center of the arc tube of the lamp.
[0004]
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide an electrodeless discharge lamp device that can be used for general lighting and UV light sources for curing by separating a high-pressure plasma luminous bulb from an arc tube wall in an electrodeless discharge lamp device having a high internal pressure when lit. And an electrodeless discharge lamp.
In the present application, the high internal pressure at the time of lighting means a pressure of 2 × 10 ⁴ Pa or more.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention according to claim 1 has a structure in which an enclosure which generates a high-pressure plasma luminous bulb away from the tube wall of the arc tube is sealed in the arc tube made of a light-transmitting material. and electrodeless discharge lamp, an electromagnetic energy supply means for supplying from outside of the electrodeless discharge lamp electromagnetic energy to the electrodeless discharge lamp, and means for controlling the position of the high-pressure plasma fireball, the electromagnetic energy P ( W), when the inner volume of the arc tube is v (cm ³ ), the density of the enclosure is n ₀ (pieces / cm ³ ), and the ionization voltage of the enclosure is Vi (eV), equation (1)
^{P / v ≦ 4.39 × 10 -} 11 is characterized in satisfying the relationship _{× n 0 × exp (-1.39Vi)} . In the present application, the density of the enclosure is represented by the number of atoms per unit volume (1 cm ³ ). Obtaining radiant energy P _r from the per unit volume of the discharge lamp as a formula, there is a following formula. This is John F. Waymouth, Electric Discharge Lamps ( page 289 , 1971 ) There is a description.
P _r = n ₀ A hn exp (-eV / kT) where n ₀ is the atomic density, A is the average transition probability, hn is the average photon energy, V is the average excitation voltage, T is the temperature, and e is Elementary charge, k is Boltzmann's constant. In this equation, using values such as the average value, but have given P _r, however, considering the actual state of the lamp, it is challenging In obtaining these values, requiring yet enormous time . Therefore, in the study of the present invention, for convenience, the density of the lamp enclosure was substituted for the atomic density n ₀ , and the ionization voltage of the enclosure was substituted for the average excitation voltage. The average was substituting the ionization potential of the enclosure as the excitation voltage is the fact that the excitation voltage is distributed at about 5-10% of the ionization potential of the atom. Then, a lamp was manufactured specifically, and the condition of the expression (1) of claim 4 was obtained based on the result of an experiment on the formation of a high-pressure plasma luminescent sphere . That is, when the electromagnetic wave energy is P (W), the inner volume of the arc tube is v (cm ³ ), the density of the enclosure is n ₀ (pieces / cm ³ ), and the ionization voltage of the enclosure is Vi (eV), P / ^{v ≦ 4.39 × 10 - 11 ×} n 0 × exp (-1.39Vi)
It has been found that, when the relational expression is satisfied, the electrodeless discharge lamp emits light in a state where the high-pressure plasma light-emitting sphere is separated from the tube wall.
[0006]
In the present application, a high-pressure plasma light-emitting region formed in a spherical shape is referred to as a high-pressure plasma light-emitting sphere. That the high-pressure plasma luminous sphere separates from the tube wall of the arc tube means that the temperature distribution from the center position of the arc tube to the tube wall has an inflection point on the way. FIG. 2 schematically shows the temperature distribution in the arc tube. In FIG. 2, when the vertical axis indicates the temperature and the horizontal axis indicates the distance from the tube wall of the arc tube, the conventional electrodeless discharge lamp forcibly cools the outer surface of the arc tube. The temperature has dropped rapidly. On the other hand, in the present invention, even without forced cooling, as shown by the solid line A, the temperature near the tube wall of the arc tube is substantially the same as that of the tube wall, and the temperature suddenly increases toward the light emission center at the inflection point C. The temperature distribution is such that the temperature rises.
[0007]
The invention according to claim 2 is that, as the enclosure, Al, Fe, Hf, In, Ce, Gd, Sc, Sn, Hg, Pr, Eu, Tl, Dy, Er, Zn, and Yb, which emit visible light. 2. An electrodeless discharge lamp device according to claim 1, wherein a substance containing at least one of Lu, Ti, Zr, La, Na, Li, and Xe is sealed.
[0008]
The invention according to claim 3 is characterized in that at least one of Fe, Ga, Tl, Sb, In, Pb, Bi, and Hg that emits ultraviolet light is sealed as the enclosure. The electrodeless discharge lamp device described in (1).
[0011]
The invention according to claim 4 is the electrodeless discharge lamp device according to claim 2, wherein the filling contains mercury (Hg) and the amount of Hg is 1 kg / m ³ or more. .
[0012]
The invention according to claim 5 is characterized in that the enclosure contains xenon (Xe), and the enclosure pressure of Xe at 25 ° C. is 1.5 MPa or more. Is what you do.
[0013]
The invention according to claim 6 is characterized in that a substance having a high vapor pressure and contributing to electric conduction is enclosed as an enclosure in addition to the substance according to claim 2. It is a discharge lamp device.
[0014]
The invention according to claim 7 is characterized in that, in addition to the substance according to claim 3, a substance that has a high vapor pressure and contributes to electric conduction is enclosed as an enclosure. It is a discharge lamp device.
[0015]
The invention according to claim 8 is characterized in that, as means for controlling the position of the high-pressure plasma light-emitting sphere, the intensity of external electromagnetic energy is modulated so as to cause acoustic resonance in the electrodeless discharge lamp. An electrodeless discharge lamp device according to any one of claims 1 to 7 .
[0016]
According to a ninth aspect of the present invention, as a means for controlling the position of the high-pressure plasma light-emitting sphere, the position of the light-emitting portion is detected, the magnetic field is changed by a coil provided outside the light-emitting tube, and the light-emitting portion is controlled. The electrodeless discharge lamp device according to any one of claims 1 to 7 , wherein feedback is applied so as to be separated from the arc tube.
[0017]
According to a tenth aspect of the present invention, as a means for controlling the position of the high-pressure plasma light emitting sphere, a place where the electric field strength is strong is generated in the microwave resonance chamber, and the place where the electric field strength is strong and the center position of the arc tube. The electrodeless discharge lamp device according to any one of claims 1 to 7 , wherein
[0018]
The invention according to claim 11 as a means for controlling the position of the high-pressure plasma fireball, to claim 1 0, characterized in that to produce a reflected wave to produce a standing wave microwave resonance chamber An electrodeless discharge lamp device as described above.
[0019]
According to a twelfth aspect of the present invention, as means for controlling the position of the high-pressure plasma light emitting sphere, a wall surface located on the electromagnetic wave energy supply side of the microwave resonance chamber so as to generate a strong electric field in the microwave resonance chamber. it it is an electrodeless discharge lamp device according to claim 1 0, characterized in that a plurality of openings.
[0020]
According to a thirteenth aspect of the present invention, as the means for controlling the position of the high-pressure plasma light-emitting sphere, a part of the microwave resonance chamber is formed as a concave reflecting mirror so as to generate a strong electric field in the microwave resonance chamber. An electrodeless discharge lamp device according to claim 10 .
[0021]
The invention according to claim 14, as a means for controlling the position of the high-pressure plasma fireball, electrodeless of claim 10, wherein placing the substance having a high metal or dielectric constant microwave resonance chamber It is a discharge lamp.
[0022]
According to a fifteenth aspect of the present invention, there is provided an electrodeless discharge lamp used in the electrodeless discharge lamp device according to any one of the first to fourteenth aspects, wherein the inner surface of the arc tube has an acute angle recess. It is a discharge lamp.
[0023]
According to a sixteenth aspect of the present invention, there is provided an electrodeless discharge lamp used in the electrodeless discharge lamp device according to any one of the first to fourteenth aspects, wherein the electrodeless discharge lamp has at least one protrusion on the outer surface of the arc tube. Electrodeless discharge lamp.
[0024]
[Action]
Luminescent substances, such as Hg, Xe, and metal halides, increase in absorption coefficient and increase radiation loss when the pressure in the discharge vessel increases. To reduce losses, the plasma contracts and moves away from the tube wall.
[0025]
The contracted high-pressure plasma luminous sphere tends to move upward due to buoyancy. The non-contact means (static magnetic field, electrostatic field, or changing electromagnetic field, means such as acoustic resonance) can place the high-pressure plasma luminous sphere away from the arc tube wall.
[0026]
By separating the high-pressure plasma luminous bulb from the inner surface of the luminous tube, the thermal load on the luminous tube is reduced, so that devitrification of the luminous tube can be suppressed and the life of the lamp is extended.
[0027]
Compared with a conventional electrodeless lamp in which a high-pressure plasma arc tube is in contact with the arc tube, the heat load on the arc tube is small, so that the cooling condition is simplified.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
The configuration of the electrodeless discharge lamp device of the present invention will be described with reference to FIG.
An electrodeless discharge lamp 200 in which an encapsulant that forms a high-pressure plasma luminous bulb 5 away from the tube wall of the arc tube 1 is enclosed inside the arc tube 1 made of a translucent material, and electromagnetic waves are emitted from outside the electrodeless discharge lamp 200. It comprises a microwave source 3 which is an electromagnetic energy supply means for supplying energy to the electrodeless discharge lamp 200, and a means for controlling the position of the high-pressure plasma light emitting sphere 5 (the microwave source 3 also serves here). The arc tube 1 is supported in the microwave resonance chamber 2 by an arc tube support member 6. The arc tube support member 6 may be integrated with the arc tube or may be separate from the arc tube.
[0029]
Translucent ceramics such as quartz glass, alumina, and YAG are used as the arc tube material.
As the encapsulant, Al, Fe, Hf, In, Ce, Gd, Sc, Sn, Hg, Pr, Eu, Tl, Dy, Er, Zn, Yb, Lu, Ti, Zr, La, which emit visible light, A substance containing at least one of Na, Li, and Xe is encapsulated, or at least one of Fe, Ga, Tl, Sb, In, Pb, Bi, and Hg that emits ultraviolet light is encapsulated.
[0030]
In particular, when mercury (Hg) is contained as the inclusion, the Hg amount is desirably 1 kg / m ³ or more. This is to reduce the loss due to heat conduction.
Further, when the encapsulant contains xenon (Xe), the encapsulation pressure of Xe at 25 ° C. is desirably 1.5 MPa or more. This is to reduce the loss due to heat conduction.
[0031]
Further, in addition to the above-mentioned substance that emits visible light, a substance that has a high vapor pressure and contributes to electric conduction can be enclosed as an enclosure.
Also, when the substance that emits ultraviolet light is selected as the enclosure, it is also possible to enclose a substance having a high vapor pressure and contributing to electric conduction in addition to the substance that emits ultraviolet light. This is because, when a substance having a high vapor pressure and contributing to electric conduction is enclosed, the electric conductivity is improved, and the high-pressure plasma light-emitting sphere is easily lit.
[0032]
The means for controlling the position of the high-pressure plasma light-emitting sphere will be described with reference to FIGS. 3 and 4. FIG. 3 shows that the position of the light-emitting portion is detected by a light-emitting sphere position detecting mechanism 7 such as a CCD camera. A current is supplied from a drive power supply 8 to a coil 15 disposed outside the coil to change the intensity of the magnetic lines of force, change the magnetic field, and apply feedback so that the high-pressure plasma luminous sphere 5 is separated from the tube wall of the luminous tube 1. it can.
[0033]
As a means for controlling the position of the high-pressure plasma light-emitting sphere, the intensity of the external electromagnetic energy is periodically modulated as shown in FIG. The intensity modulation of the external electromagnetic energy is adjusted to the resonance frequency inherent to the lamp in relation to the object / enclosure pressure, causing acoustic resonance to produce a standing wave of gas density in the arc tube, The position of the high-pressure plasma luminous sphere can be controlled near the node. In FIG. 4, the high-pressure plasma luminous sphere in the arc tube 1 is omitted, and the density of gas at a certain time is expressed in the arc tube 1 by shading.
[0034]
Note that to periodically modulate the intensity of the external electromagnetic energy means to periodically change the amplitude of the frequency of the external electromagnetic energy.
[0035]
Alternatively, as a means for controlling the position of the high-pressure plasma light emitting sphere, a place where the electric field strength is strong in the microwave resonance chamber and the center position of the arc tube is matched with the place where the electric field strength is strong. . In order to generate a place where the electric field strength is strong in the microwave resonance chamber, and to make the place where the electric field strength is strong and the center position of the arc tube coincide with each other, the microwave is generated so as to generate a standing wave in the microwave resonance chamber. The reflected wave may be generated using the wall of the resonance chamber.
Producing a reflected wave to produce a standing wave means, for example, changing a matching state in a microwave resonance chamber by a matching unit to create a mismatched state.
[0036]
As shown in FIG. 5, even when a plurality of openings 13 are provided on a wall surface of the microwave resonance chamber 2 located on the electromagnetic wave energy supply side so as to generate a place where the electric field strength is strong in the microwave resonance chamber 2, It is possible to generate a place where the electric field strength is strong in the microwave resonance chamber, and to match the place where the electric field strength is strong with the center position of the arc tube. The microwaves introduced from the plurality of openings overlap each other in the microwave resonance chamber, and can generate a portion having a strong electric field intensity.
[0037]
Further, as shown in FIGS. 6 and 7, a part of the microwave resonance chamber 2 may be formed as a concave reflecting mirror 10 so as to generate a place where the electric field strength is strong in the microwave resonance chamber 2. In particular, in FIG. 7, the inner surface of the microwave resonance chamber 2 is a concave reflecting mirror except for the waveguide junction.
[0038]
Then, a metal or a substance having a high dielectric constant is preferably provided in the microwave resonance chamber.
This is because a portion having a high electric field strength can be generated by a metal or a substance having a high dielectric constant.
Specifically, it is effective to place a substance such as metal or ceramics near the lamp. FIG. 10 shows a schematic diagram. A high dielectric constant member 14 penetratingly fixed to the arc tube support member 6 is installed near the arc tube. Here, for example, alumina is used as the ceramics. In addition, tungsten is used as the metal.
[0039]
FIGS. 8 and 9 show examples of the shape of the arc tube of the electrodeless discharge lamp used in the electrodeless discharge lamp device according to the present invention. By providing at least one protrusion 12 on the outer surface of the arc tube, the electric field is easily concentrated, and the lighting performance is improved.
[0040]
【Example】
Next, specific examples of the present invention will be described in detail.
<Example 1>
In the electrodeless discharge lamp device shown in FIG. 1, a spherical arc tube made of silica glass (outer diameter 20φ, wall thickness 2.0mm (inner diameter 16φ)) was used as the arc tube 1, and Hg10Kg / m ³ = 10 mg / cm ³ and 13 kPa of Ar were sealed. When a microwave of 500 W was supplied to the lamp at a frequency of 2.45 GHz, a high-pressure plasma luminous sphere having a diameter of about 4 mm was formed in a state where Hg was completely evaporated. It was confirmed that when amplitude modulation was applied to the microwave, acoustic resonance occurred in the lamp, and the high-pressure plasma luminous sphere was separated from the upper inner surface of the arc tube.
[0041]
The electromagnetic wave energy (P) is 500 W, the inner volume (v) of the arc tube is 2.14 cm ³ , the electromagnetic wave energy density (P / v) is 234 W / cm ^{3, and the} inclusion density (n ₀ ) is 3.01 × 10 ¹⁹ (pieces / piece). cm ^3), the ionization potential of mercury Vi (eV) is 10.4EV, in formula (1) according to claim ^{4 4.39 × 10 - 11 × n} 0 × exp (-1.39Vi) = ^{4.39 × 10 - 11 × 3.01 ×} 10 19 × exp (-1.39 × 10.4) = 696W / cm 3> 234W / cm 3 , and the satisfying formula (1).
[0042]
<Example 2>
In the electrodeless discharge lamp device shown in FIG. 6, a spherical arc tube made of silica glass (outer diameter 20φ, wall thickness 2.0mm (inner diameter 16φ)) was used as the arc tube 1, and Hg5Kg / m ³ = 5 mg / cm ³ and 13 kPa of Ar were sealed. Then, a microwave of 500 W at a frequency of 2.45 GHz was supplied to the lamp, and the lamp was turned on under the condition of a reflected wave of 100 W. As a result, a high-pressure plasma luminous sphere having a diameter of about 5 mm was formed with Hg completely evaporated.
Under natural air cooling conditions, the arc tube could be turned on without devitrification or swelling.
[0043]
The electromagnetic wave energy (P) is 500 W- (minus) 100 W, net 400 W, the arc tube inner volume (v) is 2.14 cm ³ , and the electromagnetic wave energy density (P / v) is 187 W / cm ³ . The filling material density (n ₀ ) is 1.51 × 10 ¹⁹ (pieces / cm ³ ), the ionization voltage of mercury is Vi (eV) is 10.4 eV, and in formula (1) according to claim 4, 4 _{^{.39 × 10 - 11 × n 0}} × exp (-1.39Vi) = 4.39 × 10- 11 × 1.51 × 10 19 × exp (-1.39 × 10.4) = 349W / cm 3> 187 W / cm ³ , which satisfies the expression (1).
[0044]
<Example 3>
A lamp in which hafnium iodide (HfI ₄ ) was sealed instead of mercury was manufactured. In the electrodeless discharge lamp device shown in FIG. 6, a spherical arc tube made of silica glass (outer diameter: 20φ, wall thickness: 2.0 mm (inner diameter: 16φ)) was used as the arc tube 1, and HfI ₄ 1.7 kg was used as an enclosure. / M ³ = 1.7 mg / cm ³ and 13 kPa of Ar. Then, when a microwave of 1000 W was supplied to the lamp at a frequency of 2.45 GHz, a high-pressure plasma luminous sphere having a diameter of about 4 mm was formed near the center of the arc tube in a state where Hf was completely evaporated.
[0045]
The electromagnetic wave energy (P) is 1000 W, the arc tube inner volume (v) is 2.14 cm ³ , and the electromagnetic wave energy density (P / v) is 467 W / cm ³ . The filling material density (n ₀ ) is 1.49 × 10 ¹⁸ (pieces / cm ³ ), the ionization voltage of hafnium is Vi (eV) is 7.0 eV, and in the formula (1) according to claim 4,
4.39 × 10 ⁻¹¹ × n ₀ × exp (−1.39Vi)
= 4.39 × 10 ⁻¹¹ × 1.49 × 10 ¹⁸ × exp (−1.39 × 7.0)
= 3890 W / cm ³ > 467 W / cm ³ , thereby satisfying the expression (1).
[0046]
<Comparative example>
For comparison with the above example, the electrodeless discharge lamp was turned on under the condition that the expression (1) of claim 4 was not satisfied.
In the electrodeless discharge lamp device shown in FIG. 6, a spherical arc tube made of silica glass (outer diameter 20φ, wall thickness 2.0mm (inner diameter 16φ)) is used as the arc tube 1, and Hg1Kg / m ³ = 1 mg / cm ³ and 13 kPa of Ar were sealed. Then, a microwave of 200 W at a frequency of 2.45 GHz was supplied to the lamp.
[0047]
In the formula (1) according to claim 4, the electromagnetic wave energy (P) is 200 W, the arc tube inner volume (v) is 2.14 cm ³ , and the electromagnetic wave energy density (P / v) is 93.5 W / cm ³ . The density of the enclosure (n ₀ ) is 3.01 × 10 ¹⁸ (pieces / cm ³ ), the ionization voltage of mercury is Vi (eV) is 10.4 eV, and the equation (1) is
4.39 × 10 ⁻¹¹ × n ₀ × exp (−1.39Vi)
= 4.39 × 10 ⁻¹¹ × 3.01 × 10 ¹⁸ × exp (−1.39 × 10.4)
= 69.6 W / cm ³ . This was higher than the power density of 93.5 W / cm ³ , and did not satisfy the expression (1).
In this case, the high-pressure plasma luminous sphere in the electrodeless discharge lamp was in contact with the arc tube wall.
[0048]
In the embodiment of the present invention, a microwave source has been described as the electromagnetic energy supply means, but high frequency energy can also be used as the electromagnetic energy.
Although the electrodeless discharge lamp device of the present invention can be used for general lighting applications such as store lighting, it can be used as a light source such as a liquid crystal projector or a fiber lighting light source in combination with an optical system by forming a point light source. May be used.
[0049]
【The invention's effect】
According to the electrodeless discharge lamp device of the present invention, even when the pressure of the luminescent material is high, the high-pressure plasma luminescent sphere shrinks so as to reduce the radiation loss, separates from the tube wall, and reduces the heat load on the luminous tube. As a result, devitrification of the arc tube can be suppressed, and the life of the lamp is extended.
[0050]
Further, the electrodeless discharge lamp of the present invention has a smaller heat load on the arc tube as compared with a conventional electrodeless discharge lamp in which a high-pressure plasma arc tube is in contact with the arc tube, so that cooling of the lamp is simplified.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
FIG. 2 is a schematic diagram of a temperature distribution from a tube wall in a light emitting tube to a light emitting center.
FIG. 3 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
FIG. 4 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
FIG. 5 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
FIG. 6 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
FIG. 7 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
FIG. 8 shows an example of an arc tube shape of the electrodeless discharge lamp according to the present invention.
FIG. 9 shows an example of an arc tube shape of the electrodeless discharge lamp according to the present invention.
FIG. 10 is a configuration diagram of an electrodeless discharge lamp device according to the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 arc tube 2 microwave resonance chamber 3 microwave source 4 waveguide 5 high-pressure plasma luminous sphere 6 luminous tube support member 7 luminous sphere position detecting mechanism 8 drive power supply 9 magnetic field line 10 reflecting mirror 11 depression 12 protrusion 13 opening 14 high dielectric constant Member 15 Coil 100 Electrodeless discharge lamp device 200 Electrodeless discharge lamp

Claims (16)

An electrodeless discharge lamp in which an encapsulant that generates a high-pressure plasma luminous bulb away from the arc tube is enclosed inside an arc tube made of a translucent material, and electromagnetic energy is supplied from outside the electrodeless discharge lamp. Electromagnetic energy supply means for supplying the electrodeless discharge lamp, and means for controlling the position of the high-pressure plasma luminous sphere,
When the electromagnetic wave energy is P (W), the inner volume of the arc tube is v (cm ³ ), the density of the enclosure is n ₀ (pieces / cm ³ ), and the ionization voltage of the enclosure is Vi (eV), the equation (1) is obtained.
^{P / v ≦ 4.39 × 10 -} 11 × n 0 × exp (-1.39Vi)
An electrodeless discharge lamp device characterized by satisfying the following relationship: Al, Fe, Hf, In, Ce, Gd, Sc, Sn, Hg, Pr, Eu, Tl, Dy, Er, Zn, Yb, Lu, Ti, Zr, La, which emit visible light 2. The electrodeless discharge lamp device according to claim 1, wherein a substance containing at least one of Na, Li, and Xe is sealed. 2. The electrodeless discharge lamp device according to claim 1, wherein at least one of Fe, Ga, Tl, Sb, In, Pb, Bi, and Hg that emits ultraviolet light is enclosed as the enclosure. 3. The enclosure contains mercury (Hg) and the amount of Hg is 1 kg / m ^Three The electrodeless discharge lamp device according to claim 2, wherein: 3. The electrodeless discharge lamp device according to claim 2, wherein the enclosure contains xenon (Xe), and the enclosure pressure of Xe at 25 ° C. is 1.5 MPa or more. 2. The electrodeless discharge lamp device according to claim 1, wherein a substance having a high vapor pressure and contributing to electric conduction is sealed in addition to the substance according to claim 2 as an enclosure. 2. The electrodeless discharge lamp device according to claim 1, wherein a material having a high vapor pressure and contributing to electric conduction is sealed in addition to the material according to claim 3 as an enclosure. 8. The device according to claim 1, wherein the means for controlling the position of the high-pressure plasma light-emitting sphere has an intensity of external electromagnetic energy modulated so as to cause acoustic resonance in the electrodeless discharge lamp. 9. Electrodeless discharge lamp device. As means for controlling the position of the high-pressure plasma light-emitting sphere, the position of the light-emitting portion is detected, the magnetic field is changed by a coil disposed outside the light-emitting tube, and feedback is applied so that the light-emitting portion is separated from the light-emitting tube. The electrodeless discharge lamp device according to claim 1, wherein: As means for controlling the position of the high-pressure plasma light emitting sphere, a place where the electric field strength is strong is generated in the microwave resonance chamber, and the place where the electric field strength is strong matches the center position of the arc tube. The electrodeless discharge lamp device according to claim 1. 11. The electrodeless discharge lamp device according to claim 10, wherein the means for controlling the position of the high-pressure plasma light emitting sphere generates a reflected wave so as to generate a standing wave in a microwave resonance chamber. As means for controlling the position of the high-pressure plasma light-emitting sphere, a plurality of openings are provided on a wall surface located on the electromagnetic wave energy supply side of the microwave resonance chamber so as to generate a strong electric field in the microwave resonance chamber. The electrodeless discharge lamp device according to claim 10, wherein: 11. The method according to claim 10, wherein a part of the microwave resonance chamber is formed as a concave reflecting mirror so as to generate a place having a high electric field strength in the microwave resonance chamber as a means for controlling the position of the high-pressure plasma light emitting sphere. The electrodeless discharge lamp device as described in the above. 11. The electrodeless discharge lamp according to claim 10, wherein a metal or a substance having a high dielectric constant is installed in the microwave resonance chamber as means for controlling the position of the high-pressure plasma light emitting sphere. An electrodeless discharge lamp for use in the electrodeless discharge lamp device according to any one of claims 1 to 14, wherein the inner surface of the arc tube has an acute angle recess. H. An electrodeless discharge lamp used in the electrodeless discharge lamp device according to any one of claims 1 to 14, wherein the electrodeless discharge lamp has at least one protrusion on the outer surface of the arc tube.

Images