WO2021187242A1 - Light irradiation device - Google Patents
Light irradiation device Download PDFInfo
- Publication number
- WO2021187242A1 WO2021187242A1 PCT/JP2021/009312 JP2021009312W WO2021187242A1 WO 2021187242 A1 WO2021187242 A1 WO 2021187242A1 JP 2021009312 W JP2021009312 W JP 2021009312W WO 2021187242 A1 WO2021187242 A1 WO 2021187242A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light emitting
- irradiation device
- arc tube
- light irradiation
- light
- Prior art date
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 102
- 239000000112 cooling gas Substances 0.000 claims abstract description 63
- 230000014759 maintenance of location Effects 0.000 claims description 29
- 238000009423 ventilation Methods 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 abstract description 9
- 239000007789 gas Substances 0.000 description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 239000000463 material Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000009751 slip forming Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 229910052724 xenon Inorganic materials 0.000 description 3
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- -1 or the like Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
Definitions
- the present invention relates to a light irradiation device.
- ultraviolet light has been used for manufacturing semiconductors and liquid crystal panels and for generating ozone for air purification.
- a light source that emits ultraviolet light for example, an excimer lamp as described in Patent Document 1 below is used.
- ultraviolet light sources include, for example, low-pressure mercury lamps.
- the arc tube forming these light emitting spaces is made of quartz glass, which is a material having transparency to ultraviolet light. As the temperature of quartz glass rises, its transparency to light having a short wavelength gradually decreases. Therefore, in order to maintain the irradiation amount of ultraviolet light above a certain level, the low-pressure mercury lamp is provided with a cooling mechanism so that the temperature does not rise above a predetermined temperature when lit.
- the heat capacity of the arc tube increases as the size of the arc tube increases. Further, when the voltage applied to the electrodes is increased, the energy of the discharge is increased and the amount of ultraviolet light generated is increased, but at the same time, the amount of heat generated by the discharge is also increased. For this reason, the temperature at which the excimer lamp is lit has gradually become an issue in response to the demand for larger size and higher output.
- Patent Documents 1 and 2 disclose a light irradiation device configured to inject cooling gas onto an excimer lamp from a side surface to cool the entire arc tube and lower the temperature at which the excimer lamp is lit. There is.
- an object of the present invention is to provide a light irradiation device capable of cooling an excimer lamp more efficiently.
- the light irradiation device of the present invention An excimer tube extending in the first direction and having transparency to ultraviolet light and a pair of electrodes facing each other via the wall surface of the excimer tube are provided and face each other in a second direction orthogonal to the first direction.
- An excimer lamp having one wall surface of the wall surface of the arc tube as a light emitting surface, A pair of side wall plates extending in the first direction and facing each other via the arc tube in the first direction and the third direction orthogonal to the second direction.
- the arc tube has a shape extending in the first direction between the arc tube and one of the side wall plates, and toward the outer wall surface of the arc tube on the side opposite to the light emitting surface.
- a blower mechanism with an injection port that injects cooling gas An intake mechanism having an intake port extending in the first direction between the arc tube and the side wall plate on the side opposite to the ventilation mechanism in the second direction. It extends in the first direction and is arranged in the second direction on the side of the arc tube opposite to the light emitting surface so as to be separated from the arc tube, and the pair of side wall plates can be directly attached or other members can be attached. It is characterized by being provided with a partition plate that is indirectly contacted via a partition plate.
- the ventilation mechanism is a mechanism that injects the cooling gas to be sent toward the excimer lamp.
- the "injection port extending in the first direction” means that the openings functioning as the injection port are continuously formed in the first direction or discretely formed in the first direction. Including the case where there is.
- the injection port only needs to be formed between the arc tube and one side wall plate in the third direction, and the entire ventilation mechanism fits between the arc tube and the side wall plate in the third direction. It doesn't have to be.
- the intake mechanism is a mechanism that extends in the first direction and has an intake port that takes in gas around the excimer lamp.
- the "intake port extending in the first direction” means that the openings functioning as the intake ports are continuously formed in the first direction or discretely formed in the first direction. Including the case where there is.
- the intake port may be formed between the arc tube and the side wall plate on the side opposite to the injection port of the blower mechanism in the third direction, and the entire intake mechanism may be formed with the arc tube in the third direction. It does not have to fit between the side wall plate and the side wall plate.
- the cooling gas hits the outer wall surface on the side opposite to the light emitting surface of the arc tube extending in the first direction over a wide range, and the entire excimer lamp is cooled.
- the cooling gas injected from one side wall plate side toward the outer wall surface on the side opposite to the light emitting surface of the arc tube is the other side wall along the outer wall surface on the opposite side of the light emitting surface of the arc tube. It flows toward the plate side and is sucked out by the intake mechanism. Therefore, the hot gas does not remain around the excimer lamp and is cooled by the cooling gas sent one after another by the ventilation mechanism.
- the cooling gas is injected toward the outer wall surface opposite to the light emitting surface of the arc tube, passes through the outer wall surface opposite to the light emitting surface of the arc tube, and is taken in by the intake mechanism. , It becomes difficult to go around to the light emitting surface side, and the amount of heat propagated to the irradiation target is minimized.
- the flow rate of the cooling gas injected from the blower mechanism and the intake amount of the intake mechanism so as not to wrap around to the light emitting surface side or to draw in gas from the light emitting surface side. It is preferable that the amounts of and are substantially the same.
- the term "almost the same" as used herein means that the flow rate of the gas that can be taken in by the intake mechanism is within ⁇ 20% of the flow rate of the cooling gas that is injected from the ventilation mechanism within a predetermined time.
- the above light irradiation device A windshield may be provided that projects from the side wall plate toward the arc tube and is arranged so that the tip end portion is in close proximity to or in contact with the arc tube.
- the cooling gas injected from the ventilation mechanism is shielded from the wind, and it is possible to further suppress the progress toward the light emitting surface side.
- the term "proximity" as used herein means that the separation distance is 3.0 mm or less.
- an ultraviolet light source that emits short ultraviolet light having a wavelength of 200 nm or less is used.
- ultraviolet light having a main emission wavelength of 172 nm is encapsulated with xenon gas as a light emitting gas.
- An excimer lamp that emits light is used.
- the oxygen concentration between the light emitting surface and the irradiation target is as low as possible in order to sufficiently irradiate the irradiation target with ultraviolet light. It is preferable that Therefore, for example, the oxygen concentration of nitrogen gas or the like is set between the light emitting surface and the irradiation target at a predetermined flow rate so that the oxygen concentration between the light emitting surface and the irradiation target is equal to or less than a predetermined concentration. Control is usually performed to allow low inert gas to flow through.
- the intake mechanism may not be able to reliably suck out the cooling gas or turbulence may occur. For this reason, the gas existing on the side opposite to the light emitting surface of the arc tube is mixed, or the nitrogen gas flows into a region different from the light emitting surface and the irradiation target, and the light emitting surface and the light emitting surface. It becomes difficult to control the oxygen concentration with the irradiation target.
- the cooling gas toward the light irradiation surface side is shielded from wind, so that the influence on the oxygen concentration between the light emission surface and the irradiation target is suppressed, and the flow rate and flow velocity of the cooling gas are conventionally reduced.
- the cooling gas may be air taken in from the outside.
- the cooling gas various gases can be adopted as long as they are inert gases, and as described above, air taken in from the outside can be adopted at low cost.
- the ventilation mechanism includes a first retention portion extending in the first direction and a second retention portion extending in the first direction downstream of the first retention portion and having a volume smaller than that of the first retention portion. It may have and.
- the cooling gas does not flow directly from the first retention portion toward the second retention portion, but gradually fills the entire first retention portion. Then, the air pressure in the first stagnant part rises due to the cooling gas sent one after another from the inflow port that introduces the cooling gas toward the inside of the blower mechanism, and the cooling gas filling the first stagnant part gradually stays in the second stagnant part. Pass through so that it is pushed out toward the part. Therefore, even when the cooling gas flows in from a part of the inflow port, the cooling gas can be guided to the entire light emitting surface extending in the first direction.
- each retention portion means a part of the space through which the cooling gas flows, which is formed between the inflow port and the injection port, and the cooling gas does not necessarily have to stay inside.
- the second retaining portion extends in the first direction means that the second retaining portion is continuously formed in the first direction or is formed discretely in the first direction. Including the case of.
- the volume of the first retention portion is configured to be larger than the total volume of the second retention portions.
- the ventilation mechanism may have a plurality of inlets for the cooling gas along the first direction.
- the temperature of the excimer lamp extending in the first direction is higher on the central side in the first direction than on the end side. Therefore, with the above configuration, the flow rate of the cooling gas introduced from each inflow port can be adjusted so as to match the temperature distribution of the excimer lamp.
- the above light irradiation device A plurality of the blower mechanisms may be arranged along the first direction.
- the flow rate and direction of the cooling gas injected onto the light emitting surface can be finely adjusted according to the respective positions in the first direction. Therefore, the central portion of the arc tube in the first direction, which tends to be hot, can be cooled more strongly, and uneven irradiation of ultraviolet light to the irradiation target can be suppressed.
- a light irradiation device capable of cooling an excimer lamp more efficiently is realized.
- FIG. 1 It is a perspective view which shows one Embodiment of a light irradiation apparatus typically. It is a perspective view which removed the partition plate from the light irradiation apparatus of FIG. It is sectional drawing when the light irradiation apparatus of FIG. 1 is seen in the Z direction. It is sectional drawing when one Embodiment of an excimer lamp is seen in the Y direction. It is sectional drawing when the excimer lamp of FIG. 3 is seen in the Z direction. It is a side view when the excimer lamp of FIG. 3 is seen in the X direction. It is a drawing which disassembled one Embodiment of a blast mechanism for each member.
- FIG. 17 It is a perspective view which shows another embodiment of a light irradiation apparatus schematically. It is a perspective view which shows another embodiment of a light irradiation apparatus schematically. It is sectional drawing when the excimer lamp of FIG. 17 is seen in the Z direction. It is an enlarged cross-sectional view around one excimer lamp of FIG. It is sectional drawing when the excimer lamp is seen in the Z direction.
- FIG. 1 is a perspective view schematically showing an embodiment of the light irradiation device 1
- FIG. 2 is a perspective view in which the partition plate 6 is removed from the light irradiation device 1 of FIG.
- FIG. 3 is a cross-sectional view of the light irradiation device 1 of FIG. 1 when viewed in the Z direction.
- the light irradiation device 1 of the present embodiment includes an excimer lamp 2, a blower mechanism 3, an intake mechanism 4 between the excimer lamps 2, and each excimer in the Y direction.
- a side wall plate 5 for partitioning the lamp 2 in the Y direction, a partition plate 6 for partitioning the space in the X direction, and a windbreak plate 7 protruding from the side wall plate 5 toward the excimer lamp 2 are provided.
- the light irradiation device 1 is equipped with two identical excimer lamps 2, and emits light to an irradiation target object W1 arranged on the light emitting surface 13 side of each excimer lamp 2. It irradiates ultraviolet light emitted from the space 10c.
- the direction in which the excimer lamp 2 extends is the Z direction (first direction), and the direction in which the electrodes 11 of the excimer lamp 2 face each other is the X direction (second direction).
- Direction the direction orthogonal to the X direction and the Z direction is defined as the Y direction (third direction).
- the direction when distinguishing between the positive and negative directions, it is described with positive and negative signs such as "+ Z direction” and "-Z direction", and the positive and negative directions are not distinguished.
- the direction in it is simply described as "Z direction”.
- each direction of the ventilation mechanism 3 and the intake mechanism 4 is defined corresponding to a direction determined by the state in which the excimer lamp 2 is mounted on the light irradiation device 1.
- FIG. 4 is a cross-sectional view of an embodiment of the excimer lamp 2 when viewed in the Y direction.
- the excimer lamp 2 includes an arc tube 10, a pair of electrodes 11, and a reflective film 12.
- the arc tube 10 is made of a material that is transparent to ultraviolet light, for example, quartz glass, and extends in the Z direction as shown in FIG. Further, a light emitting space 10c in which the light emitting gas G1 is sealed is provided inside the light emitting tube 10.
- the wall surface on the ⁇ X side of the arc tube 10 is the light emitting surface 13 for extracting ultraviolet light radiated from the light emitting space 10c
- the outer wall surface on the + X side of the arc tube 10 is the surface to be cooled 14. Is.
- the light irradiation device 1 used in the manufacturing process of the liquid crystal panel or the like has a very large excimer lamp 2 having a length in the Z direction of about 500 mm to 3000 mm in order to cope with the increase in size of the liquid crystal panel. Is installed.
- the length of the arc tube 10 in the Z direction is 1500 mm.
- the light emitting gas G1 is xenon gas and emits ultraviolet light having a main light emitting wavelength of 172 nm.
- the main light emitting wavelength is ultraviolet light other than 172 nm. It may be configured to emit light.
- FIG. 5 is a cross-sectional view of the excimer lamp 2 of FIG. 4 when viewed in the Z direction.
- the arc tube 10 is formed so that the cross section of the arc tube 10 when cut in the XY plane is rectangular when viewed from the Z direction.
- the cross-sectional shape of the arc tube 10 may be, for example, an oval shape in which the wall surface facing the Y direction has an arc shape, or another polygonal shape such as a hexagon or an octagon.
- FIG. 6 is a side view of the excimer lamp 2 of FIG. 4 when viewed in the X direction.
- the electrodes 11 are formed in a mesh shape on the outer wall surface 10a of the arc tube 10.
- a voltage required for light emission is applied to the electrode 11, a discharge is generated in the light emitting space 10c, and ultraviolet light is emitted.
- the ultraviolet light generated in the light emitting space 10c is emitted to the outside of the light emitting tube 10 through the mesh of the electrode 11 with the wall surface on the ⁇ X side as the light emitting surface 13.
- the ⁇ X side electrode 11 is formed so as to face the same shape as the illustrated electrode 11.
- the shape of the electrodes 11 may be different from each other, and the electrodes 11 on the + X side do not need to pass ultraviolet light, and may be formed in a solid shape. Further, the electrode 11 on the ⁇ X side may have a shape that allows light to pass through, and may be, for example, an electrode 11 provided with a slit.
- the pair of electrodes 11 of the present embodiment are all made of the same material, printed on the outer wall surface 10a of the arc tube 10 by screen printing, and formed by firing. It may be formed. Further, as the material for forming the electrode 11, for example, gold, platinum, or the like, or an alloy containing these, or the like can be adopted.
- the reflective film 12 is formed on the inner wall surface 10b on the side (+ X side) opposite to the light emitting surface 13 of the arc tube 10, is generated in the light emitting space 10c, and faces the + X side.
- the ultraviolet light that travels is reflected toward the -X side.
- the material for forming the reflective film 12 for example, a material formed by applying a suspension containing particulate silica (SiO 2 ), alumina (Al 2 O 3 ), or the like and firing the film is adopted. obtain.
- the reflective film 12 of the present embodiment is formed only on the inner wall surface 10b on the + X side, but may be formed on the inner wall surface 10b facing the Y direction on which the electrode 11 is not formed, or is formed at all. It doesn't have to be.
- the configuration of the ventilation mechanism 3 will be described.
- the light irradiation device 1 as shown in FIGS. 1 and 2, two ventilation mechanisms 3 arranged along the Z direction are separately arranged for each excimer lamp 2. That is, the light irradiation device 1 is equipped with a total of four ventilation mechanisms 3.
- FIG. 7 is a drawing of the blower mechanism 3 disassembled for each member.
- the ventilation mechanism 3 includes a flow pipe 30, a blow pipe 31, a bottom plate 32, and a flow path limiting plate 33 provided with a plurality of notches 33a.
- FIG. 8 is a cross-sectional perspective view of one embodiment of the blower mechanism 3 cut along the XY plane.
- a plurality of flow pipes 30 are arranged in the Z direction with respect to one ventilation mechanism 3, and a flow path for passing the cooling gas C1 is formed inside.
- a pipe, a hose, or the like is connected to each of the flow pipes 30, and air taken in from the outside of the light irradiation device 1 as the cooling gas C1 is sent into the ventilation mechanism 3 through the inflow port 34.
- the flow pipe 30 is configured to penetrate the partition plate 6, but the partition plate 6 is not shown in FIGS. 7 and 8 for the sake of explanation.
- the number of through pipes 30 provided in one ventilation mechanism 3 may be one.
- the cooling gas C1 may be other than air as long as it is an inert gas.
- the blow pipe 31 extends in the Z direction and forms a first retention portion 35 in which the cooling gas C1 that has passed through the flow pipe 30 stays. Further, the blow pipe 31 is provided with a protruding portion 31a that protrudes in a direction away from the pipe shaft 31c and forms a part of the injection port 37.
- the bottom plate 32 has a plurality of second retaining portions 36 on which the blow pipe 31 and the flow path limiting plate 33 are placed and which are discretely extended in the Z direction between the bottom plate 32 and the notch 33a of the flow path limiting plate 33.
- the bottom plate 32 is formed with a wind guide portion 32a that is slightly separated from the protruding portion 31a of the blow pipe 31 and is parallel to the blow pipe 31 when the blow pipe 31 is placed.
- the total value of the volumes of each second retaining portion 36 is configured to be smaller than the volume of the first retaining portion 35.
- the cooling gas C1 sent from the flow pipe 30 into the ventilation mechanism 3 passes through the flow pipe 30 and flows into the first retention portion 35.
- the cooling gas C1 Since the volume of the cooling gas C1 that has flowed into the first retention portion 35 is smaller than that of the first retention portion 35, the cooling gas C1 does not flow directly toward the second retention portion 36, and the first retention portion 35 It spreads in the Z direction so as to diffuse inside.
- each of the second stagnant portions 36 gradually pushes out the cooling gas C1 that has spread in the first stagnant portion 35. Flow into.
- the cooling gas C1 that has flowed into the second retention portion 36 flows from the second retention portion 36 toward the injection port 37, and is injected from the injection port 37 toward the cooled surface 14 (see FIG. 11) of the excimer lamp 2. NS.
- FIGS. 1 and 2 two light irradiation devices 1 are arranged between the excimer lamps 2 along the Z direction.
- FIG. 9 is a drawing in which one embodiment of the intake mechanism 4 is disassembled for each member.
- the intake mechanism 4 includes an exhaust pipe 40 and an intake box 41.
- the exhaust pipe 40 is integrally configured with the partition plate 6, but may be configured separately from the partition plate 6.
- FIG. 10 is a cross-sectional perspective view of one embodiment of the intake mechanism 4 cut along the XY plane.
- the exhaust pipe 40 is formed with an exhaust port 42, and the exhaust port 42 is connected to a pipe, a hose, or the like to exhaust the cooling gas C1 taken into the outside of the light irradiation device 1.
- the intake box 41 is formed so that the intake port 41a for sucking the cooling gas C1 is discretely extended in the Z direction on the surface on the ⁇ X side.
- a partition plate 6 is placed on the + X side of the intake box 41 to communicate with the opening 40a of the exhaust pipe 40.
- the intake box 41 is mounted on the side wall plate 5, and the intake ports 41a that are discretely extended in the Z direction are provided at the intake port 41a on the ⁇ Y side and the intake port 41a on the + Y side. Divided.
- the intake mechanism 4 absorbs heat from the excimer lamp 2 arranged on the ⁇ Y side and the cooling gas C1 arranged on the + Y side, and cools by absorbing heat from the excimer lamp 2 arranged on the + Y side.
- the gas C1 and the gas C1 are collectively taken in and exhausted from the exhaust port 42.
- the intake mechanism 4 may be individually provided on each excimer lamp 2.
- FIG. 11 is an enlarged cross-sectional view of the periphery of one excimer lamp 2 of FIG. 2, and FIG. 12 is an enlarged cross-sectional view of the periphery of the blower mechanism 3 of FIG.
- the blower mechanism 3 has a cooling surface of the arc tube 10 between the arc tube 10 of the excimer lamp 2 and the side wall plate 5 on the Y side when viewed from the excimer lamp 2 in the Y direction.
- An injection port 37 for injecting the cooling gas C1 toward the 14 is arranged.
- the intake port 41a of the intake mechanism 4 is arranged between the arc tube 10 of the excimer lamp 2 and the side wall plate 5 on the + Y side when viewed from the excimer lamp 2 in the Y direction.
- the side wall plates 5 are arranged so as to divide the excimer lamps 2 mounted on the light irradiation device 1 in the Y direction, and for each excimer lamp 2, a pair of side wall plates 5 are the arc tubes 10. They are arranged so as to face each other via. Further, the side wall plate 5 between the two excimer lamps 2 also functions as a support base for supporting the intake box 41 of the intake mechanism 4.
- the partition plate 6 is arranged so as to face the cooled surface 14 of the arc tube 10, and indirectly communicates with the side wall plate 5 sandwiched between the two excimer lamps 2 via the intake mechanism 4, and the other side walls. It is arranged so as to be in direct contact with the board 5.
- the windshield 7 extends in the Z direction, and as shown in FIG. 12, the excimer lamp 2 has a side wall plate 5 on the + Y side and ⁇ Y side of the excimer lamp 2. It is configured to project toward the outer wall surface 10a of the arc tube 10.
- the windbreak plate 7 of the present embodiment projects parallel to the Y direction toward the outer wall surface 10a of the arc tube 10, but is not parallel to the Y direction so as to go from the side wall plate 5 to the arc tube 10. It does not matter if it protrudes into. Further, the windshield 7 projects toward the ⁇ X side end of the arc tube 10, but is configured to project toward the + X side end of the arc tube 10 and the central portion in the X direction. It doesn't matter if it is done.
- the tip portion 7a of the windbreak plate 7 is arranged close to the outer wall surface 10a of the arc tube 10. With this configuration, the cooling gas C1 is shielded from wind so as not to flow into the light emitting surface 13 side.
- the term "proximity" as used herein means that the separation distance is 3.0 mm or less, as described above. Specifically, in the light irradiation device 1 of the present embodiment, the separation distance d1 between the windshield 7 and the arc tube 10 is 2.0 mm. The separation distance d2 between the blow pipe 31 and the bottom plate 32 at the injection port 37 of the blower mechanism 3 is 1.5 mm.
- the tip portion 7a of the windshield 7 and the outer wall surface 10a of the arc tube 10 may be arranged so as to be in contact with each other.
- the cooling gas C1 injected from the blower mechanism 3 does not flow to the light emitting surface 13 side, and heat is transferred along the cooled surface 14 of the arc tube 10. While absorbing, it flows in the + Y direction, that is, toward the intake mechanism 4 side, and cools the entire surface to be cooled 14.
- the cooling gas C1 hardly flows into the space between the light emitting surface 13 of the excimer lamp 2 and the irradiation target W1 by the windshield 7, the control of the oxygen concentration in the space is not affected. , The excimer lamp 2 can be cooled.
- the flow rate and the flow velocity of the cooling gas C1 are individually set in each blower mechanism 3. Can be adjusted. For example, it can be adjusted so that the flow rate and the flow velocity of the cooling gas C1 injected on the central portion side of the excimer lamp 2 in the Z direction, which tends to be higher in temperature, are larger than those on the end portion side.
- the cooling gas C1 When the flow rate of the cooling gas C1 injected from the blower mechanism 3 within a certain period of time is smaller than the flow rate of the cooling gas C1 injected by the intake mechanism 4 within a certain period of time, the cooling gas C1 is formed through a gap between the excimer lamp 2 and the windshield 7. It takes in a gas other than the above, and reduces the cooling effect of the cooling gas C1. Further, the oxygen concentration between the arc tube 10 and the irradiation target W1 is affected.
- the flow rate of the cooling gas C1 injected from the blower mechanism 3 within a fixed time and the flow rate taken by the intake mechanism 4 within a fixed time are adjusted to be substantially the same.
- the flow pipe 30 of the ventilation mechanism 3 and the exhaust pipe 40 of the intake mechanism 4 may be provided with cocks, valves, and the like for adjusting the flow rate, respectively.
- the cooling gas C1 is between the light emitting surface 13 and the irradiation target W1. It can also be configured to have little effect on the oxygen concentration. In such a case, the light irradiation device 1 may not include the windshield 7.
- FIG. 13 is an exploded view of another embodiment of the blower mechanism 3 for each part
- FIG. 14 is a cross-sectional perspective view of another embodiment of the blower mechanism 3 cut in an XY plane.
- the ventilation mechanism 3 is not provided with the flow path limiting plate 33, and is formed with a flow pipe 30, a blow pipe 31 having a protruding portion 31a, and a groove 32b extending in the Y direction. It may be composed of the bottom plate 32.
- the space formed by the protruding portion 31a and the groove 32b of the blow pipe 31 constitutes the second retention portion 36. Further, at each end in the ⁇ Y direction, the injection port 37 having the bottom surface of the groove 32b as the air guide portion 32a is formed so as to extend discretely in the Z direction.
- FIG. 15 is a drawing in which another embodiment of the ventilation mechanism 3 is disassembled for each member.
- the groove 32b formed in the bottom plate 32 may be formed so as to extend continuously in the Z direction. With this configuration, although not shown, a second retention portion 36 extending in the Z direction and an injection port 37 are formed.
- FIG. 16 is a perspective view schematically showing another embodiment of the light irradiation device 1.
- the blower mechanism 3 may be configured such that the partition plate 6 is provided with the through hole 6a and the through hole 6a is simply connected to the through pipe 30 without providing the blow pipe 31 or the like.
- the intake mechanism 4 may also have a configuration in which the partition plate 6 is similarly provided with a through hole 6a and the exhaust pipe 40 is simply connected.
- FIG. 17 is a perspective view schematically showing another embodiment of the light irradiation device 1
- FIG. 18 is a cross-sectional view of the excimer lamp 2 of FIG. 17 when viewed in the Z direction.
- the excimer lamp 2 included in the light irradiation device 1 has an inner tube (referred to as an inner tube 10p) and an outer tube (outer tube 10q) having a cross section when the arc tube 10 is cut in the XY plane. It may be a configuration also referred to as a double tube shape, which is composed of (referred to as).
- a pair of electrodes 11 are formed on the inner wall surface 10d of the inner tube 10p and the outer wall surface 10e of the outer tube 10q so as to face each other via an arc tube (10p, 10q).
- the inner electrode 11 is formed in a solid shape, and the outer electrode 11 emits ultraviolet light generated in the light emitting space 10c. It is formed in a mesh shape so that it can be used.
- the reflective film 12 is formed on the inner wall surface 10f on the + X side of the outer tube 10q, and the ultraviolet light generated between the arc tubes (10p, 10q) is emitted to the ⁇ X side. It is configured to emit toward. As a result, of the wall surfaces of the outer tube 10q facing each other in the X direction, the wall surface on the ⁇ X side becomes the light emitting surface 13.
- FIG. 19 is an enlarged cross-sectional view of the periphery of one excimer lamp 2 of FIG.
- the cooling gas C1 injected from the blower mechanism 3 does not flow to the light emitting surface 13 side, and absorbs heat from the outer wall surface 10e of the outer tube 10q in the + Y direction, that is, intake air.
- the outer pipe 10q is cooled by flowing toward the mechanism 4 side. In this way, the heat generated by the excimer lamp 2 is sequentially exhausted from the outer tube 10q, so that the entire excimer lamp 2 is cooled.
- FIG. 20 is a cross-sectional view of an excimer lamp 2 having a configuration different from that of FIG. 18 when viewed in the Z direction.
- the excimer lamp 2 is also referred to as a single tube shape in which a pair of electrodes 11 facing each other via the wall surface of the arc tube 10 are provided in the outer wall surface 10a of the arc tube 10 and the light emitting space 10c. It may be configured to be used.
- two ventilation mechanisms 3 are arranged along the Z direction for each excimer lamp 2, but one may be used, and three or more may be provided. It doesn't matter. Further, the two excimer lamps 2 may be configured to share the same ventilation mechanism 3. Any number of intake mechanisms 4 may be arranged along the Z direction, and may be arranged separately for each excimer lamp 2.
- the intake mechanism 4 of the present embodiment is discretely extended in the Z direction on each of the + Y side and the ⁇ Y side.
- An intake port 41a is provided.
- the intake port 41a of the intake mechanism 4 may be only one of them. Further, the intake port 41a may be one opening continuously formed in the Z direction.
- the total value of the respective volumes of the second retention portion 36 may be formed to be larger than the volume of the first retention portion 35. Further, the volume of the second retention portion 36 may be formed to be larger than the volume of the first retention portion 35.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
Description
第一方向に延伸し、紫外光に対して透過性を有する発光管と、前記発光管の壁面を介して対向する一対の電極とを備え、前記第一方向と直交する第二方向において対向する前記発光管の壁面のうちの、一方の壁面を光出射面とするエキシマランプと、
前記第一方向に延伸し、前記第一方向及び前記第二方向と直交する第三方向において、前記発光管を介して対向する一対の側壁板と、
前記第二方向において、前記発光管と、一方の前記側壁板との間に、前記第一方向に延伸する形状を呈し、前記発光管の前記光出射面とは反対側の外壁面に向かって冷却ガスを噴射する噴射口を有する送風機構と、
前記第二方向において、前記発光管と、前記送風機構とは反対側の前記側壁板との間に、前記第一方向に延伸する形状を呈する吸気口を有する吸気機構と、
前記第一方向に延伸し、前記第二方向において、前記発光管の前記光出射面とは反対側に前記発光管と離間して配置され、前記一対の側壁板を直接、又は他の部材を介して間接的に連絡する仕切り板とを備えることを特徴とする。 The light irradiation device of the present invention
An excimer tube extending in the first direction and having transparency to ultraviolet light and a pair of electrodes facing each other via the wall surface of the excimer tube are provided and face each other in a second direction orthogonal to the first direction. An excimer lamp having one wall surface of the wall surface of the arc tube as a light emitting surface,
A pair of side wall plates extending in the first direction and facing each other via the arc tube in the first direction and the third direction orthogonal to the second direction.
In the second direction, the arc tube has a shape extending in the first direction between the arc tube and one of the side wall plates, and toward the outer wall surface of the arc tube on the side opposite to the light emitting surface. A blower mechanism with an injection port that injects cooling gas,
An intake mechanism having an intake port extending in the first direction between the arc tube and the side wall plate on the side opposite to the ventilation mechanism in the second direction.
It extends in the first direction and is arranged in the second direction on the side of the arc tube opposite to the light emitting surface so as to be separated from the arc tube, and the pair of side wall plates can be directly attached or other members can be attached. It is characterized by being provided with a partition plate that is indirectly contacted via a partition plate.
前記側壁板から前記発光管に向かって突出し、先端部が前記発光管と近接、又は接触するように配置された遮風板を備えていても構わない。 The above light irradiation device
A windshield may be provided that projects from the side wall plate toward the arc tube and is arranged so that the tip end portion is in close proximity to or in contact with the arc tube.
前記冷却ガスは、外部から取り込まれた空気であっても構わない。 Further, in the above light irradiation device,
The cooling gas may be air taken in from the outside.
前記送風機構は、前記第一方向に延伸する第一滞留部と、前記第一滞留部よりも下流に、前記第一方向に延伸し、前記第一滞留部よりも容積が小さい第二滞留部とを有していても構わない。 In the above light irradiation device
The ventilation mechanism includes a first retention portion extending in the first direction and a second retention portion extending in the first direction downstream of the first retention portion and having a volume smaller than that of the first retention portion. It may have and.
前記送風機構は、前記第一方向に沿って複数の前記冷却ガスの流入口を有していても構わない。 In the above light irradiation device
The ventilation mechanism may have a plurality of inlets for the cooling gas along the first direction.
複数の前記送風機構が、前記第一方向に沿って配置されていても構わない。 The above light irradiation device
A plurality of the blower mechanisms may be arranged along the first direction.
以下、別実施形態につき説明する。 [Another Embodiment]
Hereinafter, another embodiment will be described.
2 : エキシマランプ
3 : 送風機構
4 : 吸気機構
5 : 側壁板
6 : 仕切り板
6a : 貫通孔
7 : 遮風板
7a : 先端部
10 : 発光管
10a : 外壁面
10b : 内壁面
10c : 発光空間
10d : 内壁面
10e : 外壁面
10f : 内壁面
10p : 内管
10q : 外管
11 : 電極
12 : 反射膜
13 : 光出射面
14 : 被冷却面
30 : 通流管
31 : ブロー管
31a : 突出部
32 : 底板
32a : 導風部
32b : 溝
33 : 流路制限板
33a : 切欠き
34 : 流入口
35 : 第一滞留部
36 : 第二滞留部
37 : 噴射口
40 : 排気管
40a : 開口部
41 : 吸気ボックス
41a : 吸気口
42 : 排気口
C1 : 冷却ガス
G1 : 発光ガス
W1 : 照射対象物
d1,d2 : 離間距離
1: Light irradiation device 2: Excimer lamp 3: Blower mechanism 4: Intake mechanism 5: Side wall plate 6:
Claims (6)
- 第一方向に延伸し、紫外光に対して透過性を有する発光管と、前記発光管の壁面を介して対向する一対の電極とを備え、前記第一方向と直交する第二方向において対向する前記発光管の壁面のうちの、一方の壁面を光出射面とするエキシマランプと、
前記第一方向に延伸し、前記第一方向及び前記第二方向と直交する第三方向において、前記発光管を介して対向する一対の側壁板と、
前記第二方向において、前記発光管と、一方の前記側壁板側の間に、前記第一方向に延伸する形状を呈し、前記発光管の前記光出射面とは反対側の外壁面に向かって冷却ガスを噴射する噴射口を有する送風機構と、
前記第二方向において、前記発光管と、前記送風機構とは反対側の前記側壁板との間に、前記第一方向に延伸する形状を呈する吸気口を有する吸気機構と、
前記第一方向に延伸し、前記第二方向において、前記発光管の前記光出射面とは反対側に前記発光管と離間して配置され、前記一対の側壁板を直接、又は他の部材を介して間接的に連絡する仕切り板とを備えることを特徴とする光照射装置。 An excimer tube extending in the first direction and having transparency to ultraviolet light and a pair of electrodes facing each other via the wall surface of the excimer tube are provided and face each other in a second direction orthogonal to the first direction. An excimer lamp having one wall surface of the wall surface of the arc tube as a light emitting surface,
A pair of side wall plates extending in the first direction and facing each other via the arc tube in the first direction and the third direction orthogonal to the second direction.
In the second direction, it exhibits a shape extending in the first direction between the arc tube and one of the side wall plates, and toward the outer wall surface of the arc tube on the side opposite to the light emitting surface. A blower mechanism with an injection port that injects cooling gas,
An intake mechanism having an intake port extending in the first direction between the arc tube and the side wall plate on the side opposite to the ventilation mechanism in the second direction.
It extends in the first direction and is arranged in the second direction on the side of the arc tube opposite to the light emitting surface so as to be separated from the arc tube, and the pair of side wall plates can be directly attached or other members can be attached. A light irradiation device including a partition plate that indirectly communicates with the light irradiation device. - 前記側壁板から前記発光管に向かって突出し、先端部が前記発光管と近接、又は接触するように配置された遮風板を備えることを特徴とする請求項1に記載の光照射装置。 The light irradiation device according to claim 1, further comprising a windshield plate that protrudes from the side wall plate toward the light emitting tube and whose tip is arranged so as to be close to or in contact with the light emitting tube.
- 前記冷却ガスは、外部から取り込まれた空気であることを特徴とする請求項2に記載の光照射装置。 The light irradiation device according to claim 2, wherein the cooling gas is air taken in from the outside.
- 前記送風機構は、前記第一方向に延伸する第一滞留部と、前記第一滞留部よりも下流に、前記第一方向に延伸し、前記第一滞留部よりも容積が小さい第二滞留部とを有していることを特徴とする請求項1~3のいずれか一項に記載の光照射装置。 The ventilation mechanism includes a first retention portion extending in the first direction and a second retention portion extending in the first direction downstream of the first retention portion and having a volume smaller than that of the first retention portion. The light irradiation device according to any one of claims 1 to 3, wherein the light irradiation device has.
- 前記送風機構は、前記第一方向に沿って複数の前記冷却ガスの流入口を有することを特徴とする請求項1~3のいずれか一項に記載の光照射装置。 The light irradiation device according to any one of claims 1 to 3, wherein the ventilation mechanism has a plurality of inlets for the cooling gas along the first direction.
- 複数の前記送風機構が、前記第一方向に沿って配置されていることを特徴とする請求項1~3のいずれか一項に記載の光照射装置。
The light irradiation device according to any one of claims 1 to 3, wherein the plurality of blower mechanisms are arranged along the first direction.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020227026899A KR20220124745A (en) | 2020-03-16 | 2021-03-09 | light irradiation device |
CN202180008006.1A CN114902375A (en) | 2020-03-16 | 2021-03-09 | Light irradiation device |
JP2022508242A JP7283629B2 (en) | 2020-03-16 | 2021-03-09 | Light irradiation device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020045377 | 2020-03-16 | ||
JP2020-045377 | 2020-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021187242A1 true WO2021187242A1 (en) | 2021-09-23 |
Family
ID=77771216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/009312 WO2021187242A1 (en) | 2020-03-16 | 2021-03-09 | Light irradiation device |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP7283629B2 (en) |
KR (1) | KR20220124745A (en) |
CN (1) | CN114902375A (en) |
WO (1) | WO2021187242A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012221621A (en) * | 2011-04-05 | 2012-11-12 | Harison Toshiba Lighting Corp | Light irradiation device |
JP2015230838A (en) * | 2014-06-05 | 2015-12-21 | ウシオ電機株式会社 | Excimer light irradiation device |
JP2017157458A (en) * | 2016-03-03 | 2017-09-07 | ウシオ電機株式会社 | Ultraviolet irradiation device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5534344B2 (en) | 1973-12-17 | 1980-09-05 |
-
2021
- 2021-03-09 JP JP2022508242A patent/JP7283629B2/en active Active
- 2021-03-09 CN CN202180008006.1A patent/CN114902375A/en active Pending
- 2021-03-09 WO PCT/JP2021/009312 patent/WO2021187242A1/en active Application Filing
- 2021-03-09 KR KR1020227026899A patent/KR20220124745A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012221621A (en) * | 2011-04-05 | 2012-11-12 | Harison Toshiba Lighting Corp | Light irradiation device |
JP2015230838A (en) * | 2014-06-05 | 2015-12-21 | ウシオ電機株式会社 | Excimer light irradiation device |
JP2017157458A (en) * | 2016-03-03 | 2017-09-07 | ウシオ電機株式会社 | Ultraviolet irradiation device |
Also Published As
Publication number | Publication date |
---|---|
KR20220124745A (en) | 2022-09-14 |
CN114902375A (en) | 2022-08-12 |
JPWO2021187242A1 (en) | 2021-09-23 |
JP7283629B2 (en) | 2023-05-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100333235B1 (en) | Optical irradiation device | |
US9616469B2 (en) | Light projection device | |
JP2007157583A (en) | Light illumination device | |
WO2021187242A1 (en) | Light irradiation device | |
JP5743160B2 (en) | UV irradiation equipment | |
JP2021150041A (en) | Light irradiation device | |
US6831419B1 (en) | Exhaust system for a microwave excited ultraviolet lamp | |
JP2014042884A (en) | Ultraviolet irradiator | |
TW201300177A (en) | Ultraviolet radiation device | |
US20070242232A1 (en) | Electronic device and guiding device | |
CN113658846A (en) | Ultraviolet lamp | |
JP3744397B2 (en) | UV irradiator | |
KR100539403B1 (en) | Circulation air cooling system for light illuminating apparatus | |
JP2003144537A (en) | Sterilization device | |
TWI453786B (en) | Light irradiation device | |
JPH0487636A (en) | Ultraviolet irradiator | |
CN215869295U (en) | Waveguide device and microwave excitation high-energy C-section UV lamp | |
KR20130053373A (en) | Irradiation device and irradiation method | |
WO2021203216A1 (en) | Ultraviolet light curing device | |
JPH09201401A (en) | Ultraviolet sterilization apparatus | |
WO2022137594A1 (en) | Active energy irradiation device and active energy irradiation system | |
JPH0386234A (en) | Ultraviolet ray irradiation device | |
JP4720154B2 (en) | Flash lamp light emitting device | |
JP2005081738A (en) | Ultraviolet ray-irradiating apparatus | |
KR20030069626A (en) | air sterilizer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21772313 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2022508242 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20227026899 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 21772313 Country of ref document: EP Kind code of ref document: A1 |