JP2006236623A - Display device using dielectric barrier discharge tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device using a dielectric barrier discharge tube capable of displaying a pattern utilizing light emission of a phosphor film. <P>SOLUTION: A discharge space is provided between a lid 13 and a bottom 14 opposed to each other in an enclosure 11, and a character string 17 made of a phosphor film is provided on an inner surface of the lid 13. On an outer surface of the lid 13, there is provided a transparent discharge electrode 19 having a discharge section 19b that is provided only in a part of the entire area opposed to the discharge space, the part including a region that faces the character string 17. A character string 18 facing the character string 17 is provided on an inner surface of the bottom 14. On an outer surface of the bottom 14, there is provided a transparent discharge electrode 20 having a discharge section 20b that is provided only in a part of the entire area opposed to the discharge space, the part including a region that faces the character string 18. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device using a dielectric barrier discharge tube in which a discharge space in which a discharge gas is sealed is provided between a pair of opposingly disposed dielectrics. In this specification, “pattern” includes letters, numbers, symbols, figures, designs, and the like.

Conventionally, as this type of dielectric barrier discharge tube, there is a flat discharge tube disclosed in Patent Document 1. In this flat discharge tube, a discharge space is formed between a pair of glass substrates arranged to face each other. A transparent discharge electrode is formed on the outer surface of one of the glass substrates, and a phosphor film is formed on the inner surface thereof. Further, a transparent discharge electrode is formed on the inner surface of the other glass substrate, and a phosphor film is formed on the transparent discharge electrode. Each transparent discharge electrode is provided with a rectangular piece of conductor (a current-carrying electrode) on the periphery thereof, and a power supply wire is soldered to the conductor.
JP 2003-31182 A

  By the way, the flat discharge tube as described in the above-mentioned Patent Document 1 emits light uniformly in the entire discharge space, and therefore has only a use as a lighting device, and includes letters, numbers, symbols, figures, or patterns. It was not possible to display some kind of pattern.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a display device using a flat discharge tube capable of performing pattern display using light emission of a phosphor film. It is in.

  In order to achieve the above object, according to the first aspect of the present invention, a discharge space in which a discharge gas is sealed and a dielectric are provided between a pair of discharge electrodes arranged opposite to each other. A display device using a dielectric barrier discharge tube provided with a phosphor film facing a space, wherein at least one of the discharge electrodes is a transparent discharge electrode, and the discharge space is visible through the transparent discharge electrode. And a pattern is expressed by the phosphor film.

  According to a second aspect of the present invention, in the first aspect of the present invention, the dielectric is a pair disposed opposite to each other with the discharge space interposed therebetween, at least one of which is transparent and is provided on an inner surface or an outer surface thereof. The transparent discharge electrode is provided.

  According to a third aspect of the invention, in the second aspect of the invention, the pair of dielectrics are both transparent, the transparent discharge electrode is provided on the outer surface of each dielectric, and at least one of the two dielectrics. The phosphor film for forming a pattern is provided on the inner surface of the film.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, at least one of the pair of discharge electrodes is provided on the inner surface of the dielectric facing the discharge space and covered with a protective film made of a dielectric film. Further, a pattern made of the phosphor film is provided thereon.

The invention according to claim 5 is the invention according to claim 1, wherein one of the pair of discharge electrodes is the transparent discharge electrode and the other is an opaque electrode.
According to the sixth aspect of the present invention, both the front and back plates of the housing are formed of a dielectric, and at least the front plate is a transparent dielectric, and a transparent discharge electrode is provided on the outer or inner surface of the front plate. A phosphor that has a discharge electrode on the outer surface or inner surface of the back plate, encloses a discharge gas inside the housing to form a discharge space, and forms a pattern on at least one inner surface of both front and back plates of the housing A film is provided, and the discharge space is made visible from the outside through the transparent dielectric and the transparent discharge electrode.

  According to the seventh aspect of the present invention, the front plate of the housing is formed of a transparent dielectric, the back plate is formed of an insulator, a transparent discharge electrode is provided on the outer surface or the inner surface of the front plate, and the inner surface of the rear plate The discharge electrode is provided in the housing, and a discharge gas is enclosed in the housing to form a discharge space, and a phosphor film that forms a pattern is provided on at least one inner surface of both the front and back plates, and the transparent The discharge space is made visible through the dielectric and the transparent discharge electrode.

  According to an eighth aspect of the present invention, the surface plate of the casing is formed of a transparent dielectric, the back plate is formed of a metal body that also serves as a discharge electrode, and the transparent discharge electrode is provided on the outer surface or the inner surface of the surface plate. The discharge gas is enclosed in the housing to form a discharge space, and a phosphor film that forms a pattern is provided on the inner surface of at least one of the front and back double-sided plates. Further, the transparent dielectric and the transparent discharge electrode The discharge space is made visible from the outside.

  The invention according to claim 9 is the invention according to claim 6 or claim 7, wherein at least one of the transparent discharge electrode and the discharge electrode is extended along the periphery of the casing, and the pattern. And a connecting portion that connects the base portion and the discharging portion.

  The invention according to claim 10 is the invention according to claim 9, wherein the transparent discharge electrode and the discharge electrode are respectively composed of the base portion, the discharge portion and the connection portion, and the discharge portion of the transparent discharge electrode. And the discharge part of the same discharge electrode are provided at the same position, and the base part and the connection part of the transparent discharge electrode and the base part and the connection part of the discharge electrode are provided at different positions.

The invention according to claim 11 is the invention according to claim 9 or 10, characterized in that the discharge portion is provided in a range including a region of the phosphor film constituting a pattern as a minimum. .
The invention according to claim 12 is the invention according to claim 6, wherein the phosphor film constituting the pattern is provided on the inner surface of the front plate, and the phosphor film is formed on the entire inner surface of the back plate. It is characterized by.

  The invention according to claim 13 is the invention according to any one of claims 6 to 8, wherein the transparent discharge electrode is provided on the inner surface of the surface plate, and the transparent discharge electrode is made of a dielectric film. It is covered with a protective film, and a pattern made of the phosphor film is provided thereon.

A fourteenth aspect of the invention is characterized in that, in the invention according to any one of the sixth to thirteenth aspects, the casing is curved in an arc shape.
A fifteenth aspect of the invention is characterized in that, in the invention according to any one of the sixth to thirteenth aspects, the casing is curved into a spherical shape.

  In the invention described in claim 16, two cylindrical dielectrics having different diameters are arranged so as to overlap each other on the same central axis, and a cylindrical discharge space is formed between the two dielectrics. The outer dielectric is a transparent dielectric, the transparent discharge electrode is provided on the outer surface or inner surface of the outer dielectric, the discharge electrode is provided on the outer surface or inner surface of the inner dielectric, the inner surface of the outer dielectric, and the inner A phosphor film forming a pattern is provided on at least one of the outer surfaces of the dielectric, and the discharge space is made visible through the transparent dielectric and the transparent discharge electrode.

  The invention according to claim 17 is the invention according to claim 16, wherein the transparent discharge electrode is provided on the outer surface of the outer dielectric, the discharge electrode is provided on the outer surface of the inner dielectric, and the surface is provided. It is covered with a protective film, and a pattern made of the phosphor film is provided on at least one of the inner surface of the outer dielectric and the protective film.

(Function)
According to invention of Claims 1-10, when a pattern-like fluorescent substance film | membrane emits light, not only as a lighting fixture but a pattern display function is exhibited.

  According to the eleventh aspect of the present invention, the drive voltage is applied from the discharge portion only to a partial range including at least the region facing the phosphor film in the entire area of the dielectric. Accordingly, the power consumption is reduced as compared with the case where the discharge portion is provided in the entire area of the dielectric facing the discharge space.

  According to the present invention, the pattern-like phosphor film emits light, so that not only a lighting apparatus but also a display function of a pattern such as letters, numbers, symbols, figures or designs is exhibited. Therefore, it is possible to provide a display device capable of displaying a pattern using the light emission of the phosphor film.

(First embodiment)
Next, a first embodiment in which the present invention is embodied in a display device using a flat discharge tube will be described with reference to FIGS.

  As shown in FIG. 1 and FIGS. 2A and 2B, the display device 10 using the flat discharge tube according to the present embodiment includes a flat casing 11, and the casing 11 has one surface. An open bottomed box body 12 and a square plate-like lid body 13 as a surface plate for closing the opening of the box body 12 are provided. The box body 12 includes a flat bottom portion 14 as a back plate and a frame-like side wall portion 15 at the periphery thereof. Both the box body 12 and the lid 13 are formed of a transparent dielectric such as transparent glass, and are joined using a low-melting glass frit. In the housing 11, the lid body 13 and the bottom portion 14 of the box body 12 are parallel to each other, and are opposed to each other with an interval set by the side wall portion 15. In the present embodiment, the lid 13 and the bottom portion 14 constitute a pair of dielectrics. Moreover, in the housing | casing 11, the sealed discharge space 16 (illustrated in FIG.2 (b)) is formed between the cover body 13 and the bottom part 14, and there is inert gas as discharge gas in there. Is enclosed. This inert gas mainly generates ultraviolet rays, such as xenon gas and mixed gas containing xenon gas.

  A character string 17 made of a phosphor film is provided on the inner surface (lower surface in FIG. 1) of the lid 13. A character string 18 made of the same phosphor film as the character string 17 is provided on the inner surface (the upper surface in FIG. 1) of the bottom 14 of the box body 12. Both character strings 17 and 18 have the same shape and are provided at the same position. Each character string 17, 18 is formed by screen printing, for example.

  Transparent discharge electrodes 19 and 20 are provided on the outer surface of the lid 13 (upper surface in FIG. 1) and the outer surface of the bottom portion 14 (lower surface in FIG. 1), respectively. Each of the transparent discharge electrodes 19 and 20 serving as a discharge electrode is formed by sputtering, vapor deposition, CVD (Chemical Vapor Deposition), for example, indium tin oxide (ITO), tin oxide, or zinc oxide, or It is formed by coating.

  The transparent discharge electrode 19 includes a base portion 19a extending along the periphery of the lid 13, a discharge portion 19b provided at a position facing the character string 17, and a connection portion 19c that connects the base portion 19a and the discharge portion 19b. Has been. More specifically, the discharge part 19b is provided only in a part of the entire area of the lid 13 that faces the entire discharge space 16 and includes a region that faces the character string 17 at a minimum. A current-carrying electrode 21a for supplying power to the transparent discharge electrode 19 is joined to the end of the base part 19a, and a power supply wire (shown in FIGS. 2A and 2B) 22 is soldered to the current-carrying electrode 21a. Has been. That is, the base portion 19 a is provided for connecting the electric wire 22 to the transparent discharge electrode 19, and the discharge portion 19 b is provided for discharging to the region facing the character string 17 in the entire region of the discharge space 16. Yes. The connecting portion 19c is provided to supply power from the base portion 19a to the discharging portion 19b.

  Similarly to the transparent discharge electrode 19, the transparent discharge electrode 20 includes a base portion 20 a extending along the periphery of the bottom portion 14, a discharge portion 20 b provided at a position facing the character string 18, a base portion 20 a and a discharge portion. It is comprised from the connection part 20c which connects 20b. More specifically, the discharge part 20b is provided only in a part of the entire area of the bottom part 14 that faces the entire discharge space 16 and includes at least a region facing the character string 18. A current-carrying electrode 21b for feeding power to the transparent discharge electrode 20 is joined to the end of the base 20a, and a power-carrying electric wire 22 is soldered to the current-carrying electrode 21b. The discharge part 20b is formed in the same shape and size as the discharge part 19b of the transparent discharge electrode 19 and is provided at the same position. On the other hand, the base portion 20a and the connection portion 20c are provided at positions different from the base portion 19a and the connection portion 19c. And the base 20a, the discharge part 20b, and the connection part 20c have the same function as the base 19a, the discharge part 19b, and the connection part 19c, respectively.

  Now, in the display device 10 configured as described above, when a drive voltage is applied between the transparent discharge electrodes 19 and 20 via the current-carrying electrodes 21a and 21b, between the discharge portions 19b and 20b in the discharge space 16. A discharge state occurs in the region. Due to this discharge, the discharge gas is ionized to generate ultraviolet rays, and the ultraviolet rays are irradiated to the character strings 17 and 18. Then, visible light is generated in each of the character strings 17 and 18, and this visible light is radiated to the outside of the housing 11 through the lid 13. As a result, the character strings 17 and 18 represented by the phosphor film are emitted and displayed through the front side (the outer surface side of the lid 13) and the rear side (the outer surface side of the bottom portion 14) of the display device 10.

Therefore, according to the present embodiment, the following effects can be obtained.
(1) Since the character strings 17 and 18 as patterns are represented by the phosphor film, the character strings 17 and 18 can be lit and displayed when the character strings 17 and 18 emit light. Therefore, a flat discharge tube can be used as a display device.

  (2) The discharge portions 19b and 20b of the transparent discharge electrodes 19 and 20 include at least a region facing the character strings 17 and 18 among all the areas of the lid 13 and the bottom portion 14 facing the entire discharge space 16. Only in some areas. Further, the base 19a and the connection 19c of the transparent discharge electrode 19 and the base 20a and the connection 20c of the transparent discharge electrode 20 were provided at different positions that do not correspond to each other. For this reason, a drive voltage can be applied only to the discharge parts 19b and 20b facing the character strings 17 and 18. Accordingly, the power consumption is reduced as compared with the case where the discharge portion is provided in all areas of the lid 13 and the bottom portion 14 facing the discharge space 16.

(Second Embodiment)
Next, a second embodiment embodying the present invention will be described with reference to FIGS. 3 and 4A and 4B. In the present embodiment, both transparent discharge electrodes 19 and 20 are different from those in the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  As shown in FIGS. 3 and 4A, 4B, the transparent discharge electrode 19 of the present embodiment provided on the outer surface of the lid 13 includes a base 19a extending along the periphery of the lid 13; It is comprised from the discharge part 19b provided in the position facing the character string 17 which consists of a fluorescent substance film, and the connection part 19c which connects the base 19a and the discharge part 19b. More specifically, the discharge part 19b is provided only in a region facing each character of the character string 17 in the entire area of the lid 13 facing the discharge space 16. That is, the character string 17 and the discharge part 19b have the same shape and the same size. The functions of the base portion 19a, the discharge portion 19b, and the connection portion 19c are the same as those in the first embodiment.

  In addition, the transparent discharge electrode 20 provided on the outer surface of the bottom portion 14 is similar to the transparent discharge electrode 19 in that the discharge portion provided at a position facing the base portion 20 a extending along the periphery of the lid 13 and the character string 17. 20b and a connection portion 20c that connects the base portion 20a and the discharge portion 20b. Specifically, the discharge part 20b is provided only in a region facing each character of the character string 18 made of the phosphor film in the entire area of the bottom part 14 facing the discharge space 16. That is, the character string 18 and the discharge part 20b have the same shape and the same size. On the other hand, the base portion 20a and the connection portion 20c are provided at different positions not corresponding to the base portion 19a and the connection portion 19c. Moreover, the base 20a, the discharge part 20b, and the connection part 20c have the same function as the base 19a, the discharge part 19b, and the connection part 19c, respectively.

  Now, in the display device 10 configured as described above, the effect described in (1) in the first embodiment can be obtained. In addition, since the discharge portions 19b and 20b provided only in the area facing the character strings 17 and 18 can apply the drive voltage only to the range facing the character strings 17 and 18 in the entire discharge space 16. The effect described in (2) becomes more prominent.

(Modification)
In addition, you may implement each said embodiment as follows. Note that the cross-sectional views shown in FIGS. 7 to 12 below correspond to the cross-sectional view of FIG.

In the first embodiment or the second embodiment, the character string as a pattern made of the phosphor film may be only one of the character strings 17 and 18.
As shown by a two-dot chain line in FIG. 3, the size of each of the discharge portions 19 b and 20 b may be slightly larger than the size of the character strings 17 and 18. Although not shown, conversely, the size of each discharge portion 19b, 20b may be slightly smaller than the size of the character strings 17, 18.

  -In each of the above embodiments and each of the following modifications, the description of "character string" is all a character string as a pattern, and may be a single character, number, symbol, figure, or design, Any combination of these may be used.

-It is good also as a structure which combined the transparent discharge electrode 19 of 2nd Embodiment shown in FIG. 5, and the transparent discharge electrode 20 of 1st Embodiment. This case also has the same effect as the second embodiment.
-As shown in FIG. 6, it is good also as a structure which combined the transparent discharge electrode 19 of 1st Embodiment, and the transparent discharge electrode 23 provided in the substantially whole surface of the bottom part 14. As shown in FIG. In this case, the transparent discharge electrode 23 may be formed so as to exclude a region facing the base portion 19a and the connection portion 19c of the transparent discharge electrode 19 to prevent unnecessary discharge in the same region. In this case, the same effect as that of the first embodiment is obtained.

As shown in FIG. 7A, the casing 11 is configured by joining a front dielectric plate 30 as a front plate and a rear dielectric plate 31 as a back plate with a frame member 32 interposed therebetween. is doing. And the character string 17 and the transparent discharge electrode 19 similar to 2nd Embodiment are provided in the inner and outer surfaces of the front dielectric plate 30. On the other hand, the inner surface of the rear dielectric plate 31, provided with a transparent discharge electrodes 20 having a discharge portion 20b facing the string 17, the transparent discharge electrodes _{20 MgO, SiO 2, ZnS,} MgF 2 or the like or other The protective film 33 is covered with a dielectric thin film. Further, a character string 18 as a pattern made of a phosphor film is formed in a region corresponding to the discharge portion 20b on the protective film 33. That is, the character string 18 faces the character string 17. In this configuration, the protective film 33 prevents an adverse effect due to the sputtering phenomenon from the transparent discharge electrode 20. Note that the end portion of the base portion 20 a is drawn to the outside of the housing 11 from between the back dielectric flat plate 31 and the frame member 32. In this case, the front dielectric plate 30 and the protective film 33 are disposed as dielectrics between the transparent discharge electrodes 19 and 20.

  As shown in FIG. 7B, a transparent discharge electrode 19 having a discharge portion 19b corresponding to the character string 17 is provided on the inner surface of the front dielectric flat plate 30, and the transparent discharge electrode 19 is formed from a dielectric thin film. The protective film 33 is covered. Furthermore, a character string 17 as a pattern made of a phosphor film is formed in a region corresponding to the discharge portion 19b on the protective film 33. Further, a transparent discharge electrode 20 similar to the transparent discharge electrode 19 is formed on the inner surface of the back dielectric plate 31, and fluorescent light is applied to a region corresponding to the discharge portion 20 b on the protective film 33 covering the transparent discharge electrode 20. A character string 18 is formed as a pattern made of a body film. In this configuration, adverse effects due to the sputtering phenomenon from the transparent discharge electrodes 19 and 20 are prevented by the protective films 33. Moreover, each protective film 33 on the transparent discharge electrodes 19 and 20 is disposed between the transparent discharge electrodes 19 and 20 as a dielectric.

  As shown in FIG. 8A, the character string 17 and the transparent discharge electrode 19 are provided on both the inner and outer surfaces of the lid 13 as in the second embodiment. On the other hand, a metal discharge electrode 34 as an opaque electrode is provided on the outer surface of the bottom 14 of the box body 12. In this case, the light emission display by the character string 17 can be visually recognized only from the lid 13 side. In this configuration, the lid 13 and the bottom 14 are disposed as a dielectric between the transparent discharge electrode 19 and the metal discharge electrode 34.

  -As shown in Drawing 8 (b), character string 17 and transparent discharge electrode 19 are provided in the inside and outside both sides of lid 13, respectively, like a 2nd embodiment. On the other hand, the phosphor film 35 is formed on the entire inner surface of the bottom portion 14, and the transparent discharge electrode 20 facing the entire discharge space 16 is provided on the outer surface of the bottom portion 14. In this case, the phosphor film 35 can emit light of a color different from that of the character string 17. In this configuration, the lid 13 and the bottom 14 are disposed as dielectrics between the transparent discharge electrodes 19 and 20.

  As shown in FIG. 9A, the transparent discharge electrode 19 is provided on the outer surface of the front dielectric plate 30 as in the second embodiment. On the other hand, a transparent discharge electrode 20 is provided on the entire inner surface of the back dielectric plate 31 and the entire surface of the transparent discharge electrode 20 is covered with a protective film 33 made of a dielectric thin film. Furthermore, a character string 18 as a pattern made of a phosphor film is provided in a region facing the discharge portion 19b of the transparent discharge electrode 19 on the upper surface of the protective film 33. In this configuration, the front dielectric plate 30 and the protective film 33 are disposed as dielectrics between the transparent discharge electrodes 19 and 20.

  As shown in FIG. 9B, the character string 17 and the transparent discharge electrode 19 similar to those of the second embodiment are provided on both the inner and outer surfaces of the front dielectric plate 30. On the other hand, a transparent discharge electrode 20 having a discharge portion 20b facing the character string 17 is provided on the inner surface of the back dielectric flat plate 31, and the transparent discharge electrode 20 is covered with a protective film 33 made of a dielectric thin film. . In this configuration, the front dielectric plate 30 and the protective film 33 are disposed as dielectrics between the transparent discharge electrodes 19 and 20.

  As shown in FIG. 10A, the character string 17 and the transparent discharge electrode 19 are provided on both the inner and outer surfaces of the lid 13 as in the second embodiment. On the other hand, a character string 18 facing the character string 17 is provided on the inner surface of the bottom portion 14. In addition, a metal discharge electrode 34 as an opaque electrode is provided in a part of the entire area facing the entire discharge space 16 on the outer surface of the bottom 14 and including a region facing the character string 18 at a minimum. In this configuration, the lid 13 and the bottom 14 are disposed as a dielectric between the transparent discharge electrode 19 and the metal discharge electrode 34. In this configuration, either one of the character strings 17 and 18 may be omitted.

  As shown in FIG. 10B, the character string 17 and the transparent discharge electrode 19 are provided on both the inner and outer surfaces of the front dielectric plate 30 as in the second embodiment. On the other hand, in place of the back dielectric plate 31, a metal plate 36 as a metal body serving also as a discharge electrode is provided as a part of the housing 11, and the character string 18 as a pattern made of a phosphor film on the inner surface of the metal plate 36. Is provided. In this configuration, only the front dielectric plate 30 is disposed as a dielectric between the transparent discharge electrode 19 and the metal plate 36. In this configuration, either one of the character strings 17 and 18 may be omitted.

  As shown in FIG. 11A, the character string 17 and the transparent discharge electrode 19 are provided on both the inner and outer surfaces of the front dielectric plate 30 as in the second embodiment. On the other hand, an insulating flat plate 37 is provided as a part of the housing 11 in place of the back dielectric flat plate 31, and an opaque discharge electrode 38 is formed on the inner surface of the insulating flat plate 37. The discharge electrode 38 has the same shape as the transparent discharge electrode 20 of the first embodiment. As this insulator flat plate 37, for example, ceramic, ceramic materials, concrete, wood or the like can be used. In this configuration, only the front dielectric plate 30 is disposed as a dielectric between the transparent discharge electrode 19 and the discharge electrode 38. In this configuration, the transparent discharge electrode 19 may be provided on the inner surface of the front dielectric plate 30, the transparent discharge electrode 19 may be covered with a protective film 33 of a dielectric thin film, and the character string 17 may be provided.

  As shown in FIG. 11 (b), a transparent discharge electrode 19 is provided on the inner surface of the front dielectric plate 30, and the transparent discharge electrode 19 is covered with a protective film 33 made of a dielectric thin film. In this configuration, only the protective film 33 is disposed as a dielectric between the transparent discharge electrodes 19 and 20. This configuration may be replaced with a configuration in which the transparent discharge electrode 19 is not covered with the protective film 33 and the transparent discharge electrode 20 is covered with the protective film 33.

  -As shown in FIG. 12, it is good also as a structure which curved the whole housing | casing 11 in circular arc shape so that the surface may become a convex surface or a concave surface. This bending direction is not limited to the vertical direction, and may be the horizontal direction. Further, the housing 11 may be curved so that the surface thereof is a spherical concave surface or convex surface. In this configuration, a pattern can be displayed on the surface of the casing 11 that is an arcuate convex surface or concave surface, or a spherical convex surface or concave surface.

  As shown in FIGS. 13A and 13B, the display device 40 is composed of two large and small transparent glass tubes 41 and 42 arranged at positions overlapping each other on the same axis, and both the glass tubes 41 and 42. It is constituted by a cylindrical dielectric barrier discharge tube in which a cylindrical discharge space 43 is formed. In this display device 40, a transparent discharge electrode 44 is formed on the outer surface of a glass tube 41 disposed on the outer side, and a pattern 45 made of a phosphor film is formed on the inner surface of the glass tube 41. A transparent discharge electrode 46 is formed on the inner surface of the glass tube 42 disposed on the inner side. According to the display device 40, the symbol 45 is displayed on the cylindrical peripheral surface. A design 45 may be provided outside the glass tube 42. The configuration of each of the embodiments can be applied to this embodiment. In this configuration, glass tubes 41 and 42 are disposed as dielectrics between the transparent discharge electrodes 44 and 46. In this configuration, the inner glass tube 42 may be an opaque glass tube, or an opaque discharge electrode may be provided in place of the transparent discharge electrode 46.

  As shown in FIG. 14, a transparent discharge electrode 44 is provided outside the glass tube 41, and a pattern 45 made of a phosphor film is provided inside the glass tube 41. On the other hand, a transparent discharge electrode 46 is provided on the outer side of the glass tube 42 and is covered with a protective film 47 made of a dielectric thin film. Further, the design 45 may be provided not on the inside of the glass tube 41 but on the protective film 47. In this configuration, a glass tube 41 and a protective film 47 are disposed as dielectrics between the transparent discharge electrodes 44 and 46.

The front-view shape of the display device 10 is not limited to a quadrangle, and may be, for example, an ellipse, a circle, a triangle, a pentagon or more polygon, or an indefinite shape.
As the discharge gas, in addition to the ultraviolet light that emits the character strings 17 and 18, for example, a noble gas such as Ne, Ar, He, or Kr that generates visible light, or a molecular gas such as N ₂ or O ₂ is used. Also good. Similarly, Kr-F, Kr-Cl, Xe-F, Xe-Cl, and other mixed gases of the above rare gases and molecular gases, and metals such as Zn, Cd, Hg, Na, etc. are mixed with the rare gas to generate steam. Metal gas (metal vapor) may be used. In this case, the entire character of the discharge space 16 is emitted by visible light emitted from the discharge gas, in addition to the display of the character strings 17 and 18. For this reason, various displays can be performed by making the emission color of the character strings 17 and 18 different from the emission color of the discharge gas.

  The dielectric 13 and the bottom 14 (box body 12) are formed of dielectric mineral such as mica or marble, or a dielectric synthetic resin such as polyester resin, methacrylic resin or vinyl chloride resin. May be. In this case, the bottom 14 may be an opaque dielectric. The same applies to the front dielectric plate 30 and the back dielectric plate 31.

Next, among technical ideas that can be grasped from the above embodiments, ideas other than those described in the claims will be described together with their effects.
(1) A display device using the dielectric barrier discharge tube according to any one of claims 1 to 16, wherein the discharge gas emits visible light. A display device using a barrier discharge tube. According to such a configuration, when the phosphor film emits light, the pattern represented by the phosphor film is displayed by light emission, and the discharge space emits light by visible light emitted by the discharge gas. Therefore, by making the emission color of the pattern by the phosphor film different from the emission color of the discharge gas, more various displays can be performed.

The disassembled perspective view which shows the display apparatus of 1st Embodiment. (A) is a front view which shows a display apparatus, (b) is the sectional view on the aa line in (a). The disassembled perspective view which shows the display apparatus of 2nd Embodiment. (A) is a front view which shows a display apparatus, (b) is the bb sectional view taken on the line in (a). The perspective view which shows the modification of a transparent discharge electrode. The perspective view which shows the modification of a transparent discharge electrode. (A), (b) is sectional drawing which shows the modification of a display apparatus. (A), (b) is sectional drawing which shows the modification of a display apparatus. (A), (b) is sectional drawing which shows the modification of a display apparatus. (A), (b) is sectional drawing which shows the modification of a display apparatus. (A), (b) is sectional drawing which shows the modification of a display apparatus. The longitudinal cross-sectional view which shows the modification of a display apparatus. (A) is a longitudinal cross-sectional view which shows the display apparatus using a cylindrical dielectric barrier discharge tube, (b) is the cc sectional view taken on the line in (a). The longitudinal cross-sectional view which shows the modification of a display apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Display apparatus, 11 ... Housing | casing, 13 ... Cover body as dielectric material and surface plate, 14 ... Bottom part of (box main body) as dielectric material and back plate, 16 ... Discharge space, 17, 18 ... As pattern Character string, 19 ... Transparent discharge electrode as discharge electrode, 19a ... Base part, 19b ... Discharge part, 19c ... Connection part, 20 ... Transparent discharge electrode as discharge electrode, 20a ... Base part, 20b ... Discharge part, 20c ... Connection part , 23 ... Transparent discharge electrode as discharge electrode, 30 ... Front dielectric plate as dielectric and front plate, 31 ... Back dielectric plate as dielectric and back plate, 33 ... Protection as dielectric and dielectric film Membrane, 34 ... Metal discharge electrode as opaque electrode, 35 ... Phosphor film, 36 ... Metal flat plate as metal body, 37 ... Insulator flat plate, 38 ... discharge electrode, 40 ... Display device, 41, 42 ... as a dielectric Glass tube, 43 ... discharge space, 44, 46 ... transparent discharge electrode, 45 ... design as pattern, 47 ... protective film as dielectric.

Claims (17)

A dielectric barrier discharge tube in which a discharge space in which a discharge gas is sealed and a dielectric are provided between a pair of opposing discharge electrodes and a phosphor film is provided so as to face both the discharge spaces is used. A display device,
A dielectric barrier discharge tube characterized in that at least one of the discharge electrodes is a transparent discharge electrode, the discharge space is visible through the transparent discharge electrode, and a pattern is represented by the phosphor film. Display device.   2. The dielectric according to claim 1, wherein the dielectric is a pair opposed to each other across the discharge space, at least one of which is transparent and the transparent discharge electrode is provided on an inner surface or an outer surface thereof. A display device using a dielectric barrier discharge tube.   A pair of dielectrics are both transparent, the transparent discharge electrode is provided on the outer surface of each dielectric, and the phosphor film for forming a pattern is provided on at least one inner surface of both dielectrics. A display device using the dielectric barrier discharge tube according to claim 2.   At least one of the pair of discharge electrodes is provided on the inner surface of the dielectric facing the discharge space, covered with a protective film made of a dielectric film, and further provided with a pattern made of the phosphor film. A display device using the dielectric barrier discharge tube according to claim 1.   2. A display device using a dielectric barrier discharge tube according to claim 1, wherein one of a pair of discharge electrodes is the transparent discharge electrode and the other is an opaque electrode.   Both front and back plates of the housing are formed of a dielectric, at least a front plate of which is a transparent dielectric, a transparent discharge electrode is provided on the outer surface or inner surface of the front plate, and a discharge electrode is provided on the outer or inner surface of the rear plate. A discharge gas is sealed in the housing to form a discharge space, and a phosphor film that forms a pattern is provided on the inner surface of at least one of the front and back plates of the housing. A display device using a dielectric barrier discharge tube, wherein the discharge space is visible from the outside through a body and a transparent discharge electrode.   The front plate of the housing is formed of a transparent dielectric, the back plate is formed of an insulator, the transparent discharge electrode is provided on the outer surface or the inner surface of the front plate, the discharge electrode is provided on the inner surface of the rear plate, A discharge gas is sealed inside the body to form a discharge space, and a phosphor film that forms a pattern is provided on the inner surface of at least one of both the front and back plates, and further, through the transparent dielectric and the transparent discharge electrode, A display device using a dielectric barrier discharge tube, characterized in that the discharge space is visible from the outside.   The front plate of the housing is formed of a transparent dielectric, the back plate is formed of a metal body that also serves as a discharge electrode, the transparent discharge electrode is provided on the outer surface or the inner surface of the front plate, and the discharge gas is provided inside the housing. Is provided as a discharge space, and a phosphor film forming a pattern is provided on the inner surface of at least one of the front and back double-sided plates, and the discharge space is visible from the outside through the transparent dielectric and the transparent discharge electrode. A display device using a dielectric barrier discharge tube.   At least one of the transparent discharge electrode and the discharge electrode, a base portion extending along a peripheral edge of the housing, a discharge portion provided at a position facing the pattern, and a connection portion connecting the base portion and the discharge portion 8. A display device using the dielectric barrier discharge tube according to claim 6, wherein the dielectric barrier discharge tube according to claim 6 is used.   The transparent discharge electrode and the discharge electrode are respectively composed of the base, the discharge portion, and the connection portion, and the discharge portion of the transparent discharge electrode and the discharge portion of the discharge electrode are provided at the same position, and the transparent discharge The display device using a dielectric barrier discharge tube according to claim 9, wherein the base portion and the connection portion of the electrode and the base portion and the connection portion of the discharge electrode are provided at different positions.   11. The display device using a dielectric barrier discharge tube according to claim 9, wherein the discharge portion is provided in a range including a region of the phosphor film constituting a pattern as a minimum.   The dielectric barrier discharge tube according to claim 6, wherein a phosphor film constituting the pattern is provided on an inner surface of the front plate, and a phosphor film is formed on the entire inner surface of the back plate. Display device.   7. The transparent discharge electrode is provided on the inner surface of the surface plate, the transparent discharge electrode is covered with a protective film made of a dielectric film, and a pattern made of the phosphor film is provided thereon. A display device using the dielectric barrier discharge tube according to claim 8.   The display device using the dielectric barrier discharge tube according to any one of claims 6 to 13, wherein the casing is curved in an arc shape.   The display device using the dielectric barrier discharge tube according to claim 6, wherein the housing is curved in a spherical shape.   Two cylindrical dielectrics with different diameters are arranged so as to overlap each other on the same central axis, and a cylindrical discharge space is formed between the two dielectrics, and at least the outer dielectric of them is a transparent dielectric. A transparent discharge electrode on the outer surface or inner surface of the outer dielectric, a discharge electrode on the outer surface or inner surface of the inner dielectric, and at least one of the inner surface of the outer dielectric and the outer surface of the inner dielectric A display device using a dielectric barrier discharge tube, characterized in that a phosphor film constituting a pattern is provided, and the discharge space is made visible through the transparent dielectric and the transparent discharge electrode.   The transparent discharge electrode is provided on the outer surface of the outer dielectric, the discharge electrode is provided on the outer surface of the inner dielectric, the surface thereof is covered with a protective film, and the inner surface of the outer dielectric, or The display device using a dielectric barrier discharge tube according to claim 16, wherein a pattern made of the phosphor film is provided on at least one of the protective films.

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