JP2006185687A - Discharge light emission lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a discharge light emission lamp capable of exhibiting good pressure resistance and shock resistance, stable characteristics, and high reliability and easily manufacturable in mass production at low cost. <P>SOLUTION: A molded glass substrate 1 having a rib type swelling part 10 shaped in an arch in a vertical cross section and a flat substrate 2 are sealed at mutually abutting circumferential parts 1a and 2a, and a discharge space 3 is constructed on the inside of the rib type swelling part 10. By discharge between an electron source 6 of a negative electrode and a transparent electrode film 7 of a positive electrode arranged inside the discharge space 3, light is emitted from a phosphor layer 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a discharge light-emitting lamp used for a high-intensity lamp for various illuminations, an ultraviolet lamp, and the like.

  Conventionally, there are known a wide variety of forms and light emission methods for illumination lamps using discharge light emission. However, representatively fluorescent lamps, electrodes are sealed and integrated into a cylindrical discharge tube made of thin glass. It is common.

  However, such conventional illumination lamps are generally structurally fragile and have poor pressure resistance despite the fact that the interior is in a high vacuum as a discharge space, and when various articles hit or receive external force. However, it is difficult to stably produce a uniform discharge tube structurally, which causes variations in characteristics. There is a problem that the production cost is high because it is easily generated and is inferior in mass productivity.

  In view of the above circumstances, the present invention is a discharge light emitting lamp that has excellent pressure strength and impact strength, is easy to manufacture, and can be mass-produced inexpensively with stable characteristics and high reliability. It is intended to provide.

  In order to achieve the above object, a discharge light emitting lamp according to claim 1 of the present invention is a molded glass substrate provided with ridge-like ridges 10 and 20 each having an arcuate cross-section when indicated by the reference numeral in the drawings. 1, 21 and the flat substrates 2, 22 are sealed with peripheral edges 1 a, 2 a, 21 a, 22 a, and discharge spaces 3, 23 are formed inside the ridge-shaped ridges 10, 20, It is assumed that light is emitted by a discharge between electrodes (transparent electrode film 7, electron sources 6 and 25) disposed in the discharge spaces 3 and 23.

  According to a second aspect of the present invention, in the discharge light-emitting lamp according to the first aspect, a linear shape connected to the cathode leads 5 and 26 along the longitudinal direction of the bowl-shaped raised portions 10 and 20 in the discharge spaces 3 and 23. The phosphor layers 8 are formed on the inner surfaces of the substrates 1, 2, 21, 22 facing the discharge spaces 3, 23 via the transparent electrode film 7. In addition, anode leads 9 and 27 are connected to the transparent electrode film 7, and the phosphor layer 8 emits light by electron beam excitation accompanying discharge between both electrodes.

  According to a third aspect of the invention, in the discharge light-emitting lamp of the first aspect, a rare gas or mercury vapor is enclosed in the discharge spaces 3 and 23, and ultraviolet rays are emitted by discharge.

  According to a fourth aspect of the present invention, in the discharge lamp according to any one of the first to third aspects, a plurality of the ridge-like ridges 20 are arranged radially, and the ridge-like ridges 20 are arranged at the radial center. ... the discharge space 23 between each other communicates.

  In the discharge lamp according to the first aspect of the present invention, the discharge space is formed inside the ridge-like raised portion by sealing the formed glass substrate provided with the ridge-like raised portion having an arch-shaped longitudinal section and the flat substrate. The discharge space is surrounded by a structural part having a large pressure resistance and impact resistance strength, so that a sufficient vacuum pressure resistance against the internal high vacuum can be secured, and damage caused by an impact of an article or an external force is also caused. It is less likely to occur and has excellent suitability as a lamp for lighting used under particularly severe environmental conditions. In addition, in this discharge light emitting lamp, a molded glass substrate provided with a ridge-shaped raised portion can be stably mass-produced in a uniform size and quality by heating brace from the raw material of plate glass. The two side boards can be integrated into a container shape having a discharge space simply by sealing the butted peripheral portions with frit glass, so that the lamp can be easily assembled and manufactured, and there is no variation in characteristics and high reliability. There is an advantage that a product can be mass-produced at low cost.

  According to the second aspect of the present invention, as the above-mentioned discharge light-emitting lamp, high-luminance fluorescent light emission can be obtained by electron beam excitation, and a high-performance and quality-stable lamp can be provided at a low cost.

  According to the third aspect of the present invention, the discharge light emitting lamp is particularly useful as an ultraviolet lamp.

  According to invention of Claim 4, what can produce light emission with high directivity and high intensity | strength from the saddle-like protruding part of a radial pattern as said discharge light-emitting lamp is provided.

  Hereinafter, embodiments of a discharge light-emitting lamp according to the present invention will be specifically described with reference to the drawings. 1 to 3 show a discharge light-emitting lamp L1 of the first embodiment, and FIGS. 4 to 6 show a discharge light-emitting lamp L2 of the second embodiment.

  As shown in FIGS. 1 and 2, the discharge light-emitting lamp L1 according to the first embodiment is made of transparent glass and a transparent elongated molded glass substrate 1 having a vertical cross-sectional arch shape and a bowl-shaped ridge 10 extending along the longitudinal direction. An elongated flat substrate 2 is sealed with a fritted seal 4 at peripheral portions 1a and 2a that are in contact with each other, and a discharge space 3 is formed between the substrates 1 and 2 inside the bowl-shaped raised portion 10. Yes.

  Thus, on both sides of the discharge space 3 in the longitudinal direction, cathode support pieces 5a integrated with the cathode leads 5 led out from the gap between the substrates 1 and 2 are provided upright, and both cathode support pieces 5a, 5a are erected. A linear electron source 6 is stretched between the discharge spaces 3 so as to be along the center. A phosphor layer 8 is formed on the inner surfaces of both substrates 1 and 2 facing the discharge space 3 via a transparent electrode film (ITO) 7, and the transparent electrode film 7 has an external space between the substrates 1 and 2. An anode lead 9 led out to is connected. Each cathode lead 5 is disposed in a region where the transparent electrode film 7 is not provided on the inner surface side of the flat substrate 2 as shown in FIG. 3 for insulation from the anode.

  The molded glass substrate 1 is formed into a shape having a ridge-like raised portion 10 by a hot press of a sheet glass raw material, and as shown in FIG. 1, an exhaust pipe mounting hole 11 is formed on one end side of the ridge-like raised portion 10. Is formed. When the substrates 1 and 2 are sealed through the frit seal 4 in the exhaust pipe mounting hole 11, the exhaust pipe 12 is inserted through the same frit seal as shown in FIG. It comes to stick with.

  In addition, the exhaust pipe 12 shown in FIG. 1 has a shape shortened by fusing and sealing, and is initially long. The frit seal 4 is a paste material in which a glass frit having a melting point lower than that of the glass materials of the substrates 1 and 2 and the exhaust pipe 7 is mixed with a vehicle. Evaporate to vitrify.

  In the production of the discharge light-emitting lamp L1, the transparent electrode film 7 and the phosphor layer 8 are previously formed on the inner surface of the substrates 1 and 2 facing the discharge space 3, and the cathode leads 5 are formed on the flat substrate 2. , 5 and the electron source 6 and the anode lead 9 are arranged, the substrates 1 and 2 are joined with the frit seal 4 applied to the sealing / bonding portion, and the exhaust pipe 12 is inserted into the exhaust pipe mounting hole 11 Then, by heating and firing in this assembled state, the frit seal 4 is made into molten glass, so that the whole is integrated. After that, the air in the discharge space 3 is sucked and exhausted from the exhaust pipe 12 to a predetermined degree of vacuum, and then the required discharge gas is introduced into the discharge space 3 from the exhaust pipe 12, and then the exhaust pipe 12 is filled with gas. Squeeze it with a burner and seal it.

  As shown in FIGS. 4 and 5, the discharge light-emitting lamp L2 of the second embodiment has a substantially disk shape in which six ridge-like ridges 20. The formed glass substrate 21 and the transparent flat plate 22 made of transparent glass are sealed via the frit seal 4 at the peripheral edge portions 21a and 22a that are in contact with each other. A discharge space 23 communicating with the entire inside of the ridges 20 is formed.

  Thus, in the discharge space 23, the central electron source support 24a is erected at the central portion where the radially-arranged bowl-shaped ridges 20 are combined, and near the end of each bowl-shaped ridge 20. A terminal-side electron source support 24b is erected, and linear electron sources 25 are stretched between the center-side electron source support 24a and each terminal-side electron source support 24b. These electron sources 25 are connected to each other at the center side electron source support 24a, and as shown in FIGS. 4 and 6, one end side electron source support 24 is provided on both substrates 21,. The cathode lead 26 is led out from the gap 22 to the outside.

  In addition, a phosphor layer 8 is formed on the inner surfaces of both substrates 21 and 22 facing the discharge space 23 via a transparent electrode film (ITO) 7, and in the vicinity of the end of one saddle-shaped raised portion 20, both substrates 21. , 22 is connected to the transparent electrode film 7 through an anode lead 27 led out to the outside. As shown in FIG. 6, it goes without saying that the cathode lead 26 is disposed in a region where the transparent electrode film 7 is not provided on the inner surface side of the flat substrate 22.

  As in the case of the first embodiment, the molded glass substrate 21 is formed into a shape having the ridge-like ridges 20 arranged radially by a hot press of a sheet glass raw material, as shown in FIG. As shown in FIG. 4, an exhaust pipe mounting hole (not shown) for inserting the exhaust pipe 28 is formed at the end of one hook-like ridge 20.

  Also in the manufacture of the discharge light-emitting lamp L2, as in the case of the discharge light-emitting lamp L1 of the first embodiment, the transparent electrode film 7 and the phosphor layer are respectively formed on the inner surfaces facing the discharge spaces 23 of both substrates 21 and 22 in advance. 8, and a central electron source support 24 a, a terminal electron source support 24 b..., An electron source 25, a cathode lead 26 and an anode lead 27 are disposed on the flat substrate 22, and a sealing / bonding portion In addition, the substrates 21 and 22 are joined together with the frit seal 4 applied thereto, and the exhaust pipe 28 is inserted, and the whole is integrated by heat-firing in the assembled state, and the frit seal 4 is melted into glass. Then, after the air in the discharge space 23 is sucked and exhausted from the exhaust pipe 28 to a predetermined degree of vacuum, the required discharge gas is introduced into the discharge space 23 from the exhaust pipe 28 and the exhaust pipe 28 is fused and sealed. .

In addition, the thickness of both the board | substrates 1 and 2 in 1st embodiment and the both board | substrates 21 and 22 in 2nd embodiment is set to about 2-8 mm. Further, if the thickness of the transparent electrode film 7 is too thin, sufficient electrical conduction cannot be obtained. Conversely, if it is too thick, the light transmittance deteriorates. Therefore, sufficient electrical conduction and a light transmittance of 85% or more are obtained. From about 150 to 1500 liters is suitable for securing the above. Furthermore, the thickness of the phosphor layer 8 is preferably about 10 to 100 μm. On the other hand, the degree of vacuum of the discharge spaces 3 and 23 is preferably 10 ⁻⁵ torr or more. The electron sources 6 and 25 can be either hot cathodes or cold cathodes.

  In the discharge light-emitting lamps L1 and L2 of the first and second embodiments described above, when a predetermined voltage is applied between the cathode leads 5 and 26 and the anode leads 9 and 27 for discharge, the electron source 6 , 25 collide with the phosphor layer 8 on the transparent electrode film 7, and both the surface on the saddle-like ridges 10, 20,... And the surface on the flat substrate 2, 22 side are excited by the phosphor. Emits light. In addition, it becomes light emission which has the directivity from a curved surface in the bowl-shaped protruding part 10 and 20 side.

  In these discharge light-emitting lamps L1 and L2, the discharge spaces 3 and 23 are configured inside the vertical arch-shaped ridge-shaped ridges 10 and 20 having a large withstand pressure and impact strength, so that the internal high vacuum can be prevented. In addition to ensuring a sufficient vacuum pressure resistance, it is less likely to be damaged by the impact of an article or an external force, and has excellent suitability as a lamp for lighting used under particularly severe environmental conditions. Moreover, in these discharge light-emitting lamps L1 and L2, the molded glass substrates 1 and 21 provided with the ridge-like raised portions 10 and 20 are uniform in both size and quality due to the heating brace from the raw material of the plate glass. Can be stably mass-produced, and both substrates 1, 2, 22, and 22 are integrated into a shape having discharge spaces 3 and 23 on the inside by simply sealing the butted peripheral edge with a frit seal 4 it can. Accordingly, these discharge light-emitting lamps L1 and L2 can be easily assembled and manufactured, and can be mass-produced at a low cost with high reliability without variation in characteristics.

  The discharge light-emitting lamp L1 of the first embodiment has a simple rod-like shape as a whole, and can be used for a wide range of applications. However, it is a high-intensity and sturdy lamp for lighting in tunnels and underground passages. Is preferred. Moreover, since the discharge light-emitting lamp L2 of the first embodiment emits light from the saddle-like ridges 20 arranged radially, it is expected to be applied to vehicle headlights, searchlights, signal lights, and the like.

  In the first and second embodiments, the configuration in which light is emitted from both the convex curved surface of the bowl-shaped ridges 10 and 20 and the flat glass surface on the opposite side is exemplified. However, the transparent electrode film 7 and the phosphor layer 8 are provided. By forming only on one inner surface side of both the substrates, it is possible to emit light from only one side of the convex curved surface side and the flat surface side. Thus, in a configuration that emits light only from the convex curved surface side of the molded glass substrate, an opaque ceramic plate can be used as the flat substrate. In addition, the shape of the ridge-like raised portion of the molded glass substrate is not limited to the linear shape as in the first embodiment or the radial shape as in the second embodiment, but is an arc shape, an annular shape, a triangular shape, or a quadrilateral or more polygonal shape. Various patterns such as shapes and zigzags can be set.

  Further, if a rare gas such as mercury vapor or xenon that can generate light in the ultraviolet region as a discharge gas is sealed in the discharge spaces 3 and 23 without providing the phosphor layer 8, sterilization or photo-curing type is possible. An ultraviolet lamp suitable for resin curing or the like is obtained. In addition, if the phosphor layer 8 is provided on the entire inner surface or a part of one of the two substrates and a similar discharge gas is sealed to form an ultraviolet lamp, light emission from the phosphor layer 8 also occurs during ultraviolet radiation. This light emission can be used to determine whether the ultraviolet lamp is on or off. In addition, the discharge light-emitting lamp of the present invention can be applied to all lamps that emit light using discharge, other than those that emit light or emit ultraviolet light from the phosphor.

1 is a perspective view of a discharge light emitting lamp according to a first embodiment of the present invention. It is a vertical front view of the discharge light-emitting lamp. It is a top view of the inner surface side of the flat substrate in the same discharge light emitting lamp. It is a top view of the discharge light-emitting lamp which concerns on 2nd embodiment of this invention. It is a side view of the discharge light-emitting lamp. It is sectional drawing of the AA line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,21 Molded glass substrate 1a, 21a Peripheral part 2,22 Flat substrate 2a, 22a Peripheral part 3,23 Discharge space 4 Frit seal 5,26 Cathode lead 6,25 Electron source 7 Transparent electrode film 8 Phosphor layer 9, 27 Anode lead 10, 20 Sponge ridge 12, 28 Exhaust pipe L1, L2 Discharge light-emitting lamp

Claims (4)

  A molded glass substrate provided with a ridge-shaped ridge having a longitudinal arch shape and a flat substrate are sealed at the peripheral edge of each other, and a discharge space is formed inside the ridge-shaped ridge. A discharge light-emitting lamp configured to emit light by electric discharge between electrodes disposed in the.   A linear electron source connected to the cathode lead is stretched in the discharge space along the longitudinal direction of the ridge-like ridge, and at least one of the two substrates has an inner surface facing the discharge space with a transparent electrode film interposed therebetween. The discharge light-emitting lamp according to claim 1, wherein a phosphor layer is formed, an anode lead is connected to the transparent electrode film, and the phosphor layer emits light by electron beam excitation accompanying discharge between both electrodes.   The discharge light-emitting lamp according to claim 1, wherein rare gas or mercury vapor is enclosed in the discharge space, and ultraviolet rays are emitted by discharge. The discharge light-emitting lamp according to any one of claims 1 to 3, wherein a plurality of the ridge-like ridges are arranged radially, and discharge spaces between the ridge-like ridges communicate with each other at the radial center portion.

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