JP2001283786A - Noble gas discharge lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the color slippage caused by a yellowed bonding agent and the exfoliation of the sheet structure caused by a hardened bonding agent and to aim at the cost reduction of the electrode as well as the reduction of using materials harmful to environmental pollution. SOLUTION: The noble-gas discharge lamp comprises a glass bulb 2 forming an aperture 5 including noble gas, a transparent sheet 7 rolled round the glass bulb surface, a pair of external electrodes 8a, 8b distanced with each other to such direction as following the circular direction of the airtight receptacle and attached to the inside surface of the rolled transparent sheet and a sheet structure 6 provided with a bonding layer 12 sticking the transparent sheet and external electrode to the outside surface of the airtight receptacle by applying the bonding agent on the inside surface of the transparent sheet excluding an aperture joint part 11 of the transparent sheet overlapping the outside surface of the aperture of the glass bulb.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rare gas discharge lamp in which a pair of band-shaped external electrodes is provided on the outer surface of an airtight container such as a glass bulb in which a rare gas is sealed and an aperture is formed.

[0002]

2. Description of the Related Art Generally, a rare gas discharge lamp of this type is
It is often used as a light source for reading documents such as facsimile machines, image scanners, and plain paper copiers.Conventionally, as an example of this type of rare gas discharge lamp, a fluorescent bulb is filled with an internal surface of a rare gas at a predetermined pressure. While forming a light emitting layer made of a body film, the light emitting layer has a predetermined width in a width direction to form an aperture.

[0003] A pair of band-shaped external electrodes are juxtaposed on a light-transmitting sheet on the outer surface of the glass bulb, and a sheet structure formed by applying an adhesive to almost the entire inner surface is adhered to the pair. Are mounted on the outer surface of the glass bulb.

A power supply line connection terminal made of a copper plate or the like is attached to each external electrode, and a lead wire as a power supply line is fixed to the connection terminal by soldering.

[0005]

However, in such a conventional rare gas discharge lamp, an adhesive is also applied to the inner surface of the aperture matching portion of the sheet structure to be superimposed on the aperture of the glass bulb, to thereby form the glass bulb. Since the adhesive is fixed to the outer surface, the adhesive is directly and intensively irradiated with ultraviolet rays from the aperture of the glass bulb.

For this reason, when the adhesive is of an acrylic type, there is a problem that yellowing occurs due to aging deterioration, and in particular, a color shift occurs in the case of a white lamp.

In addition, when the adhesive is a silicone resin, there is a problem that the adhesive hardens due to aging and weakens the adhesive force, and the sheet structure is easily peeled off from the glass bulb.

Further, since the power supply line connecting terminal made of a copper plate of another metal is attached to each external electrode by soldering, the connecting terminal attaching step needs to be provided separately from the external electrode forming step. For this reason, the number of manufacturing steps is increased and the cost of the electrodes is increased. In addition, there is a problem that lead contained in the solder pollutes the environment.

The present invention has been made in view of such circumstances, and provides a rare gas discharge lamp capable of preventing color shift due to yellowing of an adhesive and peeling of a sheet structure due to curing of the adhesive. The purpose is to:

It is another object of the present invention to provide a rare gas discharge lamp which can reduce both the cost of electrodes and the amount of environmental pollutants.

[0011]

According to the first aspect of the present invention, there is provided an airtight container for forming a light emitting layer having an aperture on the inner surface and enclosing a rare gas; a light-transmitting sheet wound around the outer surface of the airtight container; A pair of external electrodes fixed to each other on the winding inner surface of the light-transmitting sheet so as to be separated from each other in a direction along the circumferential direction of the airtight container, and the aperture alignment of the light-transmitting sheet overlapping the outer surface of the aperture of the airtight container. And a sheet structure provided with an adhesive layer for applying an adhesive to the inner surface of each of the windings other than the outer portion and the inner surface of each of the external electrodes to fix the external electrode to the outer surface of the airtight container. It is a rare gas discharge lamp characterized.

According to the present invention, no adhesive is applied to the inner surface of the aperture matching portion of the translucent sheet which is superimposed on the outer surface of the aperture of the airtight container from which ultraviolet rays are directly and radiated in large quantities. In addition, yellowing and curing of the adhesive due to ultraviolet irradiation can be prevented or reduced, and color shift and peeling of the translucent sheet due to these can be prevented.

According to a second aspect of the present invention, in the sheet structure, a pair of external electrodes are adjacent to each other at a predetermined interval in the width direction at one end side in the width direction of the translucent sheet along the circumferential direction of the airtight container. The rare gas discharge lamp according to claim 1, wherein the light-transmitting sheet is arranged side by side, and an aperture matching portion is arranged on the other end side in the width direction of the translucent sheet.

According to the present invention, the pair of electrodes are arranged side by side on the inner surface of the translucent sheet at a predetermined interval on the inner surface of the light-transmitting sheet. Even if it changes, the interval between the pair of electrodes can always be kept at a predetermined interval, so that the starting voltage can always be kept constant irrespective of the difference in diameter of the airtight container. On the other hand, in the case of a sheet structure in which a pair of electrodes are disposed on both sides of the aperture matching portion, the interval between the pair of electrodes changes according to the difference in the diameter of the airtight container, so that the starting voltage also changes. There is.

According to a third aspect of the present invention, in the sheet structure, one end in the width direction of the light-transmitting sheet on the side of the aperture matching portion makes one round around the outer periphery of the airtight container and further has one external portion on the other end in the width direction. 3. The rare gas discharge lamp according to claim 1, wherein a polymerized portion is formed on the electrode and overlaps and is fixed via a light-transmitting sheet.

According to the present invention, after the translucent sheet of the sheet structure has made one round of the outer surface of the airtight container, the overlapping portion at one end in the width direction is further placed on the outer surface of one of the electrodes. Since it is overlaid and fixed by adhesive,
The fixing strength of the sheet structure to the outer surface of the airtight container can be improved, and peeling of the sheet structure from the outer surface of the airtight container can be prevented or reduced.

According to a fourth aspect of the present invention, the airtight container is brought into close contact with the sheet structure in a state where one end of the aperture of the airtight container coincides with one widthwise end of the pair of external electrodes in the sheet structure. The rare gas discharge lamp according to any one of claims 1 to 3, wherein the sheet structure is fixed to an outer surface of the airtight container by rolling toward the other end.

According to the present invention, the positioning between the sheet structure and the airtight container is a simple act of simply making one end of the aperture of the airtight container coincide with one end in the width direction of the pair of external electrodes in the sheet structure. The positioning can be performed with high accuracy and easily. Therefore, even when the work of winding the sheet structure around the outer surface of the airtight container is mechanized, the positioning can be easily mechanized with high accuracy.

Further, the airtight container may be simply rolled in one direction on the sheet structure, and it is not necessary to turn the airtight container halfway, so that the workability of winding the sheet structure around the outer surface of the airtight container is improved. be able to.

According to a fifth aspect of the present invention, there is provided an airtight container for forming a light emitting layer having an aperture on the inner surface and enclosing a rare gas; a translucent sheet wound around the outer surface of the airtight container, and a winding of the translucent sheet. A pair of external electrodes which are separated from each other and fixed in a direction along the circumferential direction of the airtight container on the inner surface of the airtight container, and a winding inner surface other than the aperture matching portion of the light transmitting sheet overlapping the outer surface of the aperture of the airtight container. And a sheet structure having a light-transmitting sheet and an adhesive layer for fixing the external electrodes to the outer surface of the hermetic container by applying an adhesive to the inner surface of the winding of each external electrode; A pair of power supply terminals, each of which is integrally provided so as to protrude beyond one end in the longitudinal direction of the airtight container at one end along the same;
A pair of lead wires welded to each power supply terminal.

According to the present invention, the pair of power supply terminals are integrally formed at one longitudinal end of the pair of external electrodes.
These power supply terminals can be formed almost simultaneously in the process of forming each external electrode. Thus, there is no need to increase the number of steps, and thus cost can be reduced.

Further, since the pair of power supply terminals protrude beyond one end in the longitudinal direction of the airtight container, the lead wire can be easily welded to these power supply terminals without interference with the airtight container. Further, it is possible to prevent the welded end portion of the lead wire overlapped and welded to these power supply terminals from projecting radially outward on the outer surface of the airtight container, thereby preventing the appearance from being deteriorated.

According to a sixth aspect of the present invention, the lead wire is formed of a stranded wire, and the welded end of the lead wire is soldered, fitted to the sleeve, and caulked before welding with the power supply terminal. A rare gas discharge lamp characterized by being integrated by one of ultrasonic welding.

According to the present invention, even if the lead wire is a stranded wire, it is soldered in advance so as not to disperse, or it is crimped by fitting the stranded wire to the outside of the sleeve, or by ultrasonic welding. For example, because they are integrated into one,
The lead wire can be easily welded to the power supply terminal.

[0025]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A description will be given based on FIG. In these figures, the same or corresponding parts are denoted by the same reference characters.

FIG. 1 is a sectional view taken along line II of FIG. 2, FIG. 2 is a partially cutaway plan view of a rare gas discharge lamp 1 according to a first embodiment of the present invention, and FIG. As shown in these figures, the rare gas discharge lamp 1 has a pair of left and right lamp holders 3a and 3b made of a synthetic resin or the like externally fitted to both ends in the axial direction of a straight tubular glass bulb 2 which is an example of an airtight container. The lamp holders 3a and 3b are fixed to a predetermined mounting portion of a plain paper copier, a facsimile, an image scanner, or the like.

The glass bulb 2 contains a rare gas, such as xenon or neon, alone or in a mixture of, for example, 1200 g.
While enclosing a predetermined amount at a predetermined pressure such as 0 to 18000 Pa,
As shown in FIG. 1, on the inner surface of the glass bulb 2, a phosphor film made of a rare earth phosphor or a halophosphate phosphor is formed to form the light emitting layer 4 almost over the entire length, and the light emitting layer 4 is not formed. The aperture 5 having a predetermined opening angle θ is formed over substantially the entire length.

Then, on the outer surface of the glass bulb 2,
The sheet structure 6 is wound so that the width direction thereof is aligned with the circumferential direction of the glass bulb 2 and is closely attached thereto.

As shown in the development of FIG.
Is, for example, an overall length slightly longer than the overall length of the glass bulb 2,
A rectangular translucent sheet 7 having a width slightly longer than the circumferential length of the glass bulb 2 and a predetermined thickness, and one surface 7a of the translucent sheet 7, that is, the translucent sheet 7 is On the inner surface when it is wound around the outer surface, it is adhered by being spaced and juxtaposed at a predetermined interval α (for example, 2 to 7 mm) in the width direction of the translucent sheet 7 that coincides with the circumferential direction of the glass bulb 2. A pair of strip-shaped external electrodes 8a and 8b made of a light-transmissive conductive foil-like metal member having a length substantially equal to the entire length of the bulb 2, and are integrally formed at one longitudinal end of the external electrodes 8a and 8b. Thus, a pair of power supply terminals 9a and 9b slightly protruding forward (outward) in the longitudinal direction are formed.

Further, a pair of electrodes 8a,
When the light-transmitting sheet 7 is wound around the outer surface of the glass bulb 2, the light-transmitting sheet 7 is placed on one end 8 a of the one end (upper side in FIG. 4). The overlapping portion 10 having a predetermined width to be overlapped with the external electrodes 8a,
8b.

Further, in the translucent sheet 7, an aperture matching portion 11 having a predetermined width is provided between the overlapping portion 10 and the pair of electrodes 8a, 8b with a length slightly shorter than the entire length of the glass bulb 2. As shown in FIG. 1, when the light-transmitting sheet 7 is wound around the outer surface of the glass bulb 2, the aperture matching portion 11 is superimposed on the aperture 5 of the glass bulb 2 so as to substantially coincide with the aperture 5. It is designed to match.

FIG. 5 is a sectional view taken along the line V--V in FIG.
As shown in FIG. 4, an adhesive indicated by dots in FIG. 4 is applied to the inner surface 7a of the translucent sheet 7 at portions other than the aperture matching portion 11 to form an adhesive layer 12 having a predetermined thickness. . That is, the adhesive layer 12 is formed of a pair of external electrodes 8a and 8b.
Is formed by applying an adhesive to the surface (the inner surface of the winding), the inner surface of the overlapped portion 10, and the inner surface of the translucent sheet 7 other than the aperture matching portion 11. Adhesive 1
2 may be a silicone adhesive or an acrylic adhesive.

As the light-transmitting sheet 7, for example, polyethylene terephthalate (PET) resin, PEN resin, PEI resin, FEP resin, ETFE resin, CTFE
A resin or the like may be used. Further, external electrodes 8a, 8b
For example, aluminum foil is suitable, but copper or silver may be used as long as it has excellent conductivity and is opaque.

FIG. 6 shows a sheet structure 6 constructed as described above.
Is wound around the outer surface of the glass bulb 2. That is, first, as shown in FIG. 6, the seat structure 6 is unfolded, and the glass bulb 2 is brought into close contact with the inner surface 7a thereof with the aperture 5 facing outward. At that time,
Positioning is performed such that the lower end of the aperture 5 of the glass bulb 2 is aligned with and parallel to one end of the translucent sheet 7 on the side of the pair of electrodes 8a and 8b.

Next, in this state, the glass bulb 2 is rolled in the direction of the arrow in the drawing, that is, the other end of the translucent sheet 7 on the side of the overlapping portion 10 while slightly pressing the glass bulb 2 against the translucent sheet 7.

As a result, as shown in FIG. 1, the sheet structure 6 is wound around the outer peripheral surface of the glass bulb 2, the aperture aligning portion 11 is superimposed on the aperture 5 of the glass bulb 2, and the sheet structure 6 is formed. Is overlapped with the adhesive layer 12 via the translucent sheet 7 on one of the electrodes 8a after making one round around the outer peripheral surface of the glass bulb 2.

Therefore, according to the rare gas discharge lamp 1, the external electrodes 8 a and 8 b are formed on the outer peripheral surface of the glass bulb 2 simply by continuously rolling the glass bulb 2 on the seat structure 6 in one direction. Can be attached to In addition, the external electrode 8
Since a and 8b are arranged on the translucent sheet 7 at a predetermined interval in advance, it is not necessary to adjust the interval between the external electrodes 8a and 8b to a predetermined interval α at the time of sticking. In addition, even if manual work is performed, the work efficiency can be significantly improved.

Further, since the pair of external electrodes 8a and 8b are juxtaposed at a predetermined interval α, the glass bulb 2
Even if the diameter of the glass bulb 2 varies, the interval between the pair of external electrodes 8a and 8b is always constant at the predetermined interval α, so that the starting voltage defined by the interval between the electrodes is always constant regardless of the diameter of the glass bulb 2. Can be kept.

Further, since the adhesive layer 12 is formed on the inner surface 7a of the translucent sheet 7 in the sheet structure 6, a simple operation of simply rolling the glass bulb 2 on the sheet structure 6 is performed. Thereby, the sheet structure 6 can be wound around and adhered to the outer peripheral surface of the glass bulb 2. Therefore, not only can the work efficiency be dramatically improved, but also mechanization becomes possible, and a further mass production effect can be expected.

Further, one end of the opening of the aperture 5 of the glass bulb 2 is connected to a pair of external electrodes 8a and 8b of the seat structure 6.
The glass bulb 2 is positioned by simply matching it to the side end.
Aperture matching portion 11 of the aperture 5 and the sheet structure 6
And the above positioning is easy, so that this positioning can be easily mechanized.

Since the power supply terminals 9a and 9b of the pair of external electrodes 8a and 8b are integrally formed at the time of forming the external electrodes 8a and 8b, a separate process for forming the power supply terminals 9a and 9b is required. Can be omitted. That is,
Since man-hours can be reduced, manufacturing costs can be reduced.

Further, when the sheet structure 6 is wound and adhered to the outer peripheral surface of the glass bulb 2, the ends of the translucent sheets 7 are overlapped and adhered to each other by the overlapping portion 10, so that the sheet structure is 6, the peel strength can be prevented or reduced by increasing the adhesive strength to the glass bulb 2, and the coating reliability of the external electrodes 8a and 8b can be enhanced.

FIG. 7 is an enlarged vertical sectional view of one of the lamp holders 3a and 3b (for example, 3b). As shown in FIG. 7, a pair of power supply terminals 9a and 9b integrally connected to the external electrodes 8a and 8b are formed at the protruding ends protruding forward (outward) from one axial end of the glass bulb 2. The pair of power supply lead wires 13a and 13b are welded by, for example, ultrasonic welding.

When the pair of lead wires 13a, 13b is made of a stranded wire, the welding tip is connected to the power supply terminals 9a, 9b.
Before welding to b, solder it so that it does not come apart, fix it by crimping a conductive sleeve over the stranded wire, or solidify the stranded wire in advance by ultrasonic welding. Keep it. According to this, the pair of lead wires 13
Even if a and 13b are stranded wires, this is connected to each power supply terminal 9a,
9b can be easily welded.

A filler such as silicon 14 is filled and held in each of the lamp holders 3a and 3b and the inner space of the sheet structure 6.

FIG. 8 is a partially cutaway plan view of a rare gas discharge lamp 1A according to a second embodiment of the present invention, and FIG. 9 is a front view of the same. The rare gas discharge lamp 1A has the same basic structure as the rare gas discharge lamp 1 except that the pair of strip-shaped external electrodes 8a and 8b is replaced with a pair of comb-shaped external electrodes 18a.
There is a difference in the point that a and 18b are substituted.

That is, a pair of comb-shaped external electrodes 18
Reference numerals a and 18b are made of aluminum foil or the like, and are characterized in that the end opposite to the end on the side of the aperture 5 is cut out in a comb-like shape.

FIG. 9 is a developed view of a modified example 6A of the seat structure 6. As shown in FIG. The sheet structure 6A is obtained by changing the planar shape of the band-shaped external electrodes 8a and 8b shown in FIG.
8a, 28b, and a pair of these external electrodes 28a,
Aperture aligning portion 11 on translucent sheet 7 between 28b
A is formed, and the overlapping portions 10A are formed on the outer ends in the width direction of the external electrodes 28a and 28b.

Further, as shown in FIG.
The adhesive layer 1 is applied to the inner surface of the translucent sheet 7 other than the aperture matching portion 11A and the outer surfaces of the corrugated external electrodes 28a and 28b.
2 is the same as the sheet structure 6 shown in FIG.

[0050]

As described above, the first aspect of the present invention is:
No adhesive is applied to the inner surface of the aperture matching portion of the translucent sheet that is superimposed on the outer surface of the aperture of the airtight container from which ultraviolet rays are directly and radiated in large quantities. Deformation and curing can be prevented or reduced, and the resulting color shift and peeling of the translucent sheet can be prevented.

According to the second aspect of the present invention, a pair of electrodes are arranged side by side at a predetermined interval on the inner surface of the translucent sheet in the sheet structure. Even if the diameter changes variously, the interval between the pair of electrodes can always be maintained at a predetermined interval, so regardless of the difference in the diameter of the airtight container,
The starting voltage can always be kept constant. On the other hand, in the case of a sheet structure in which a pair of electrodes are disposed on both sides of the aperture matching portion, the interval between the pair of electrodes changes according to the difference in the diameter of the airtight container, so that the starting voltage also changes. There is.

According to the third aspect of the present invention, after the translucent sheet of the sheet structure makes one round of the outer surface of the airtight container,
Since the overlapping portion at one end in the width direction is superimposed on the outer surface of one of the electrodes via a translucent sheet and fixed with an adhesive, the fixing strength of the sheet structure to the outer surface of the airtight container is improved. And peeling of the sheet structure from the outer surface of the airtight container can be prevented or reduced.

According to the fourth aspect of the present invention, the positioning of the sheet structure and the airtight container is performed by a simple act of simply making one end of the aperture of the airtight container coincide with one end in the width direction of the pair of external electrodes in the sheet structure. Therefore, the positioning can be performed accurately and easily. Therefore, even when the work of winding the sheet structure around the outer surface of the airtight container is mechanized, the positioning can be easily mechanized with high accuracy.

Further, it is only necessary to roll the airtight container in one direction on the sheet structure, and it is not necessary to turn the airtight container in the middle thereof, so that the workability of winding the sheet structure around the outer surface of the airtight container is improved. be able to.

According to the fifth aspect of the present invention, since a pair of power supply terminals are integrally formed at one longitudinal end of the pair of external electrodes, these power supply terminals are formed substantially simultaneously in the step of forming each external electrode. be able to. Thus, there is no need to increase the number of steps, and thus cost can be reduced.

Since the pair of power supply terminals protrude beyond one end in the longitudinal direction of the airtight container, the lead wire can be easily welded to these power supply terminals without interference with the airtight container. Further, it is possible to prevent the welded end portion of the lead wire overlapped and welded to these power supply terminals from projecting radially outward on the outer surface of the airtight container, thereby preventing the appearance from being deteriorated.

According to the sixth aspect of the present invention, even if the lead wire is a stranded wire, it is soldered in advance so as not to disperse, or a sleeve is fitted over the stranded wire and crimped, or ultrasonic welding is performed. By doing so, for example, they are integrated into one, so that the lead wire can be easily welded to the power supply terminal.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along the line II of FIG. 2;

FIG. 2 is a partially cutaway plan view of the rare gas discharge lamp according to the first embodiment of the present invention.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a development view of the seat structure shown in FIG. 1;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a schematic view showing an example of a method of winding a sheet structure around the outer peripheral surface of the glass bulb shown in FIG. 1 and the like.

FIG. 7 is a longitudinal sectional view of one of the lamp holders shown in FIG. 1 and the like.

FIG. 8 is a plan view of a rare gas discharge lamp according to a second embodiment of the present invention.

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a development view of a modified example of the seat structure of the present invention.

FIG. 11 is a sectional view taken along line XI-XI in FIG. 10;

[Explanation of symbols]

 1, 1A rare gas discharge lamp 2 glass bulb 3a, 3b lamp holder 4 light emitting layer 5 aperture 6 sheet structure 7 translucent sheet 7a inner surface of translucent sheet 8a, 8b pair of external electrodes 9a, 9b pair of power supply terminals 10 , 10A overlapping portion 11, 11A aperture matching portion 12 adhesive layer 13a, 13b pair of lead wires 18a, 18b pair of comb tooth-shaped external electrodes 28a, 28b pair of corrugated external electrodes

Continued on the front page (72) Inventor Yuji Agatsuma 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Toshiba Lighting & Technology Corporation F-term (reference) 5C043 AA06 AA11 AA13 AA18 BB03 CC09 CC16 CD02 CD13 DD19 DD24 DD27 DD31 EA10 EA17 EB17

Claims (6)

[Claims] An airtight container in which a light-emitting layer having an aperture is formed on an inner surface and a rare gas is sealed; a light-transmitting sheet wound around the outer surface of the airtight container; and a light-transmitting sheet wound on the inner surface of the light-transmitting sheet. A pair of external electrodes, which are fixed and separated from each other in a direction along the circumferential direction of the hermetic container, a winding inner surface of each of the external electrodes other than the aperture matching portion of the light-transmitting sheet overlapping the outer surface of the aperture of the hermetic container. A rare gas discharge lamp, comprising: a sheet structure provided with an adhesive layer for applying an adhesive to an inner surface of the winding and applying an adhesive to an outer surface of the airtight container; 2. A sheet structure in which a pair of external electrodes are arranged side by side at a predetermined interval in the width direction on one end side in the width direction of the light-transmitting sheet along the circumferential direction of the airtight container. 2. The rare gas discharge lamp according to claim 1, wherein an aperture matching portion is disposed on the other end side in the width direction of the translucent sheet. 3. The sheet structure is arranged such that the light-transmitting sheet transmits light around the outer periphery of the airtight container at one end in the width direction on the side of the aperture matching portion and further on one external electrode at the other end in the width direction. 3. The rare gas discharge lamp according to claim 1, wherein a superposed portion is formed so as to be overlapped and fixed via the conductive sheet. 4. The airtight container is brought into close contact with the sheet structure in a state where one end of an aperture of the airtight container coincides with one end in the width direction of the pair of external electrodes in the sheet structure, and is directed toward the other end in the width direction. The rare gas discharge lamp according to any one of claims 1 to 3, wherein the sheet structure is fixed to an outer surface of the hermetic container by rolling. 5. An airtight container for forming a light emitting layer having an aperture on the inner surface and enclosing a rare gas therein; a light-transmitting sheet wound around the outer surface of the airtight container; and a winding inner surface of the light-transmitting sheet. A pair of external electrodes, which are fixed and separated from each other in a direction along the circumferential direction of the hermetic container, a winding inner surface of each of the external electrodes other than the aperture matching portion of the light-transmitting sheet overlapping the outer surface of the aperture of the hermetic container. A sheet structure provided with an adhesive layer for applying an adhesive to the inner surface of the winding to fix the translucent sheet and the external electrodes to the outer surface of the airtight container; and at one end of each of the external electrodes along the longitudinal direction of the airtight container. A pair of power supply terminals protruding integrally with each other so as to protrude beyond one end in the longitudinal direction of the airtight container; and a pair of lead wires welded to each power supply terminal. Rare gas discharge lamp . 6. The lead wire is made of a stranded wire, and a welding end of the lead wire to the power supply terminal is soldered, externally fitted to a sleeve, crimped, and ultrasonically welded before welding to the power supply terminal. A rare gas discharge lamp characterized by being integrated by: