JP2006196436A - Lead-in wire for vessel and vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lead-in wire for a vessel, capable of preventing electric short-circuit mutually between outer wire parts and undesired discharge by improving an insulating means formed in the outer wire part composing the lead-in wire, and a vessel using this lead-in wire. <P>SOLUTION: This lead-in wire 1A for a vessel is composed of an inner wire part 12, a sealed wire part 11, and the outer wire part 13 at least a part of which is coated with a sleeve 2 formed of fiber made of a nonmetallic inorganic material of heat-resistant electric insulation, and the vessel L1 uses this lead-in wire 1A. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a tube lead-in wire that is hermetically sealed to a translucent container that forms a tube such as a discharge lamp or a light bulb, and a tube using the lead-in wire.

  In a tube, for example, a fluorescent lamp, stems are sealed at both ends of a glass tube bulb having a phosphor film formed on the inner surface, and a rare gas such as mercury and argon is enclosed in the bulb as a light emitting discharge medium, and each stem An electrode for discharge is provided on the inner conductor side of at least a pair of lead wires sealed to the outside, and the outer conductor side led out of the bulb is connected to a terminal member such as a cap.

  When a voltage is applied to an electrode composed of a fillant coil or the like provided in an inner conductor portion through the outer conductor portion of two lead wires sealed from the base or the like to each stem, the above fluorescent lamps A discharge occurs between and the lamp is turned on.

  In this fluorescent lamp, when the stem is a flare stem, at least a pair (two) of lead wires extend in close proximity within the flare glass tube, and in many cases, at least one of the stems on both sides. An exhaust pipe also extends on one side.

  The pair of lead-in wires are led out so as to be guided outwardly and pulled outward by terminal pin holes and insertion holes constituting the terminal member of the base. In the case of a straight tube type lamp, the pair of lead wires are drawn almost linearly so that they do not loosen easily. However, in the case of an annular lamp or the like, the base rotates about the bulb axis as a rotation axis. For this reason, there is a possibility that the outer conductor portion connected to the terminal member of the base moves and approaches each other to cause a contact short circuit.

  This phenomenon has led to the progress of smaller and more efficient lamps, and the smaller the flare stem tube diameter is, the smaller the distance between the outer conductor parts tends to be. .

  In particular, in an annular fluorescent lamp in which the bulb outer diameter is reduced from about 28 to 33 mm to about 16 mm and the height of the pair of stems is different for controlling the vapor pressure of mercury, the electrode height On the higher side, the length of the stem tube becomes longer, the outer conductor portion becomes longer, and it becomes easy to loosen, and there is a tendency for the contact short circuit between the outer conductor portions to increase.

  Also, in other types of discharge lamps, if the external conductors are close to each other in the stem tube or the base, when a high-pressure pulse is applied, arc discharge does not occur between the electrodes and occurs between the external conductors. In some cases, the outer conductor portion was melted.

  The contact short circuit and discharge between the outer conductors in the stem tube, etc. cause the lamp to become unsatisfactory due to the melting of the outer conductor, and not only this defect but also the hot molten mass of the fused outer conductor to the stem tube wall. In rare cases, the stem tube was broken and scattered by a thermal shock that caused a rapid temperature rise due to welding, and the broken pieces also destroyed and scattered the glass tube bulb. In addition, the lighting circuit device components may be destroyed due to the large current flowing when the contact is short-circuited, and the lighting circuit device needs to be replaced.

  The problem of contact short circuit and undesired discharge between the external conductors is not limited to this type of fluorescent lamp, but is another problem that cannot be avoided in miniaturization of other lamps such as light bulbs and lighting tubes. .

Therefore, conventionally, as means for solving this type of problem, the stem tube is filled with an electrically insulating adhesive such as silicone resin (Patent Document 1), or a coating is formed on the outer conductor portion (Patent Document 2). ) Etc. have been made.
JP 2002-110098 A JP 2002-75280 A

  However, the means for filling an electrically insulating adhesive into the stem tube described in Patent Document 1 is that the thermal stress due to the lamp blinking is applied to the exhaust pipe through the adhesive and the exhaust pipe is damaged, or the adhesive is used at the time of filling. There is a problem that a great deal of labor is required for the surrounding dirt due to the stringing and the maintenance of the injection device.

  In addition, the electrically insulating coating material described in Patent Document 2 may be deteriorated by high-temperature heating during the manufacture of the stem when the heat-resistant temperature is low, and an expensive coating material with high heat resistance is required. It was. In addition, it is possible to handle by inserting the tube after the lead-in wire is sealed to the stem, but the work of inserting the tube in a narrow space in the stem tube is complicated and difficult to automate. there were.

  The present invention has been made in view of the above circumstances, and is an improvement of the insulating means formed in the outer conductor portion constituting the lead-in wire, and can prevent electrical short-circuit between the outer conductor portions and undesired discharge. It is an object of the present invention to provide a tube introduction line that can be used and a tube using the introduction line.

  The lead-in wire for a tube according to claim 1 of the present invention is at least partially covered with an inner conductor portion, a sealing wire portion, and a sleeve made of a heat-resistant and electrically insulating nonmetallic inorganic material. It is characterized by comprising an outer conductor portion.

  At least a part of the outer surface of the outer conductor part is covered with a sleeve made of a heat-resistant, electrically insulating nonmetallic inorganic material, for example, a glass fiber in a knitted cylindrical shape, that is, at least a part of the outer conductor part This is a tube lead-in wire having a heat-resistant electrical insulation coating along the lead-in axis.

  In the above, at least a part of the outer surface of the outer conductor portion refers to a portion that does not clearly contact the outer conductor portion of the adjacent lead-in wire, excluding both ends where the outer conductor portion is fixed in the glass or the connection terminal member, The connecting portion with the terminal member or the like does not need a coating because it hinders electrical connection.

  The tube lead-in line can be used for a light-emitting diode, a semiconductor, a sensor, and the like in addition to a discharge lamp such as a fluorescent lamp and various light bulbs. In the present invention, these are also included as a category for a tube. .

  Further, each wire rod of the lead-in wire can be appropriately selected and determined according to the type, structure, purpose, type, rating, load, application, price, etc. of the tube.

  The lead-in wire for a tube according to claim 2 of the present invention is characterized in that the sealing wire portion and the outer conductor portion are a single line.

  The sealed wire portion may be extended to form an outer conductor portion, and the heat-resistant and electrically insulating sleeve may be covered in the middle of the outer conductor portion. In this case, two wires are combined with the inner conductor portion in this case. Since the lead-in wire can be constituted by a metal wire, the number of parts and the number of welding points are reduced, and the same effect as described in the first aspect can be obtained.

  Moreover, you may comprise an introduction line with the single wire which extended the sealing wire part and formed the outer conducting wire part and the inner conducting wire part. Note that it is not preferable to extend the outer conductor portion or the inner conductor portion to form a sealed wire portion because there is a problem of hermetic sealing with the glass of the bulb.

  The tube lead-in wire according to claim 3 of the present invention is characterized in that the heat-resistant and electrically insulating nonmetallic inorganic material fibers are made of glass or ceramics.

  Fibers made of glass or ceramics exhibit heat-resistant electrical insulation and contain the same components as the bulb glass, etc., so even if they are buried in the bulb sealing part, etc., they suppress the generation of cracks due to foreign matters. it can.

  As the glass forming the fiber, E glass, half silica glass, silica glass, quartz glass and the like can be used, and as the ceramic, a material selected from aluminum oxide (alumina) can be used. It is better to select in consideration of the material of the conductor.

  In the lead-in wire for a tube according to claim 4 of the present invention, the thickness of the sleeve made of the heat-resistant and electrically insulating nonmetallic inorganic material fiber is 1.0 to 2.0 times the outer diameter of the outer conductor portion. It is characterized by being.

  When the sleeve is coated on the lead wire and the stem is manufactured by setting the thickness of the sleeve to a range of 1.0 to 2.0 times, preferably 1.1 to 1.5 times the outer diameter of the outer conductor portion. The introduction line can be supplied smoothly and easily.

  If the thickness of the sleeve is less than 1.0 times the outer diameter of the outer conductor portion, the heat resistance and mechanical strength of the sleeve may be reduced.

  Moreover, since the hole diameter of the insertion hole inside a sleeve will become relatively small when it exceeds 2.0 times, there exists a malfunction that positioning becomes difficult when a sleeve is coat | covered to an introduction line, and it becomes difficult to insert. In addition, since the sleeve has a large diameter, there is also a problem that when the stem is manufactured, when the lead-in wire with the sleeve is supplied to the automatic machine, the sleeve portion is caught in the machine and the lead-in supply path is clogged.

  The lead-in wire for a tube according to claim 5 of the present invention is characterized in that a sleeve made of a fiber of a heat-resistant and electrically insulating non-metallic inorganic material is covered with a length of 10 to 20 mm on the outer conductor portion. To do.

  By covering the sleeve in a range of 10 to 20 mm where the outer conductor portions are closest to each other, it is possible to prevent occurrence of short circuit or discharge. In addition, when this covering range is less than 10 mm, there is a problem that the covering area by the sleeve is reduced, and the risk that the introduction wires come into contact with each other increases. In addition, if it exceeds 20 mm, the distance between the terminal portion of the base and the sleeve becomes short, and there is a problem that it is difficult to connect the lead-in wire and the terminal portion.

  According to a sixth aspect of the present invention, the lead-in wire for a tube is characterized in that an inorganic or organic adhesive is applied to a sleeve made of a fiber of a non-metallic inorganic material having heat resistance and electrical insulation.

  After the glass or ceramic fiber is formed into a sleeve shape or inserted into a predetermined position of the outer conductor portion as a sleeve, a surface treatment agent comprising an inorganic adhesive or an organic adhesive is applied and formed on the sleeve. Further, the sleeve fiber can be prevented from fraying and the outer conductor portion from being displaced from a predetermined position, and the sleeve can be stably fixed over a long period of time.

  At this time, since the sleeve has flexibility, it bends in accordance with the movement of the bent portion or the connection position of the outer conductor portion originally flexible in the base. It can be easily arranged.

As these adhesives, 35% by mass of Na ₂ SiF _2, 30% by mass of Al ₂ O _{3 and the} balance of SiO ₂ are used as inorganic materials, and polyester resins and ethylene-vinyl acetate resins are used as organic materials. be able to.

  According to a seventh aspect of the present invention, there is provided a translucent airtight container in which a sealing portion is formed directly on the end portion via a stem, and a sealing wire portion is provided on the stem or sealing portion of the container end portion. The plurality of tube lead-in wires according to any one of claims 1 to 6, wherein the outer lead wire portion is extended to the outside of the container, and the inner lead wire portion in the container is provided. And an electrode.

  Since the lead wire inserted into (covered) the outer conductor portion is used as the sleeve made of the heat-resistant and electrically insulating glass or ceramic fiber according to any one of claims 1 to 6, the outer conductor portions are mutually connected. In the unlikely event that the gap between the conductors is long or the stem glass tube is long, even if the external conductors are in contact or close to each other, an electrically insulating sleeve is provided, so a short circuit or discharge between the external conductors There is no risk of occurrence and the stem glass tube is not destroyed.

  Also, when the outer conductor part such as a light bulb is a metal wire that forms a fuse such as a constantan wire or a monel wire, the sleeve prevents the molten fuse from fusing, so the stem glass tube, the exhaust tube, the base shell, etc. Damage can be prevented.

  In addition, the sleeve made of fiber made of glass or ceramics does not melt at the time of thermal processing in a stem manufacturing machine or a sealing machine with a valve, and acts as an insulator until the life of the tube .

  The translucent airtight container of the present invention refers to a valve made of soft glass, hard glass, or the like, or a stem (mount) that is sealed by this valve and integrally forms an airtight container. Even if the lead wire is used for the bead stem and directly crush-sealed (pinch seal) to the valve, it is sealed to the flare stem, button stem, etc. The sealing means is not particularly limited.

  In addition, the tube includes various types of fluorescent lamps such as straight tube type and ring type, ultraviolet radiation lamps, rare gas emission lamps and neon lamps, discharge lamps such as lighting tubes and high-pressure discharge lamps, general bulbs and special bulbs. Applicable to light bulbs, whether or not a base or a holder is used.

  In the case of a discharge lamp, the electrode referred to in the present invention is a filament coil or a metal plate, a cold cathode made of a metal rod or a metal lump, or an inner conductor portion in which the leading end of the lead wire also serves as a discharge electrode, etc. A discharge medium made of rare gas, mercury, halide, or the like is enclosed in the inside. In the case of a light bulb, it refers to a filament coil that forms a light source, and the container is filled with a rare gas or a halide or is in a vacuum atmosphere.

  In the tube according to claim 8 of the present invention, a light-transmitting hermetic container in which sealing portions are formed directly on both ends via a stem and stems having different heights are sealed at symmetrical positions on both ends of the container. The plurality of tube lead-in wires according to any one of claims 1 to 6, wherein the sealing wire portion is sealed to the sealing portion of the stem and the outer conductor portion is extended outside the container. It is characterized by comprising an electrode provided in the inner conductor portion in the container, a phosphor film formed on the inner surface of the container, and a discharge medium sealed in the container.

  This bulb is a fluorescent lamp, and is provided with different heights of a pair of electrodes in order to regulate the mercury vapor pressure in the bulb, and forms the coldest part in one sealing part, In the stem glass tube on the side where the total length is increased in order to increase the height of the electrode, there is a possibility that the outer conductor part is loosened or crossed, and there is a possibility that the mutual outer conductor parts come into contact with each other, causing a short circuit. These problems can be prevented by covering with an electrically insulating sleeve.

  According to the first aspect of the present invention, a sleeve knitted with a fiber of a heat-resistant, electrically insulating inorganic non-metallic material is inserted and covered on the linear outer conductor portion, so that the covering position is not shifted and high heat resistance is achieved. A tube product can be produced with a relatively low cost coating.

  According to the invention of claim 2, by sharing the wire constituting the lead-in wire, the number of parts and the number of welding points can be reduced, and a lead-in wire that provides the same effects as in the first claim can be provided. .

  According to the invention of claim 3, by using a fiber made of glass or ceramics as a material exhibiting heat-resistant electrical insulation, the sleeve is formed by knitting it and the outer conductor portion is covered, and the above-mentioned claim 1 and 2 can provide an introductory line that has the same effect as described in 2.

  According to the invention of claim 4, by regulating the thickness of the sleeve made of glass or ceramic fiber, the workability of the manufacturing process such as the sleeve insertion process is improved without lowering the heat resistance and mechanical strength. It is possible to provide an introductory line that produces the effect of peeling off.

  According to the invention of claim 5, it is possible to provide an introduction line that can be easily connected to the base while reducing the risk of contact between the introduction lines.

  According to the invention of claim 6, by applying an inorganic or organic adhesive to the sleeve and having flexibility, the sleeve can be prevented from fraying and the outer conductor portion from being displaced from a predetermined position. It is possible to provide an introduction line that can be fixed and can be easily arranged to bend in response to movement of the outer conductor portion such as a bend or a connection position.

  According to the seventh aspect of the present invention, since the lead-in wire having the effects described in the first to sixth aspects is used, the external conductor portions are in contact with each other in the unlikely event that the distance between the outer conductor portions is small. Even if they are close to each other, the sleeve is electrically insulated until the end of its life, so there is no risk of a short circuit between the outer conductors, and the stem glass tube will not be broken, preventing the short life from occurring. Can provide a ball.

  According to the eighth aspect of the present invention, a tube having the same effect as that of the seventh aspect can be provided by applying to a long stem glass tube.

  Embodiments of the present invention will be described below with reference to FIGS. 1 (a) and 1 (b) are front views showing lead wires of different configurations, respectively. FIG. 2 is a front cross-sectional view showing a section of a stem (mount) manufactured using the lead wires shown in FIG. FIG. 3 is a front view of an annular fluorescent lamp using the stem (mount) shown in FIG.

  In FIG. 1 (a), 1A is a lead-in wire, and one end side of a sealing wire portion 11 made of a central jumet wire (corresponding to soft glass) or Kovar wire or molybdenum Mo wire (corresponding to hard glass) is placed on one end side. An internal conductor made of a metal wire such as an Fe / nickel Ni alloy wire or a nickel Ni-plated iron Fe wire, that is, an inner conductor portion 12, and a copper Cu wire, a constantan (Cu / Ni alloy) wire, a monel metal (on the other end side) Ni, Cu, Mn, other alloy) wires or the like, that is, the outer conductor portion 13 is connected in cascade. Further, a bent hook portion (not shown) may be formed at the tip of the inner conductor portion 12.

  The lead-in wire 1A is manufactured by matching the end surface of the inner conductor portion 12 with one end surface of the sealing wire portion 11 and the end surface of the outer conductor portion 13 with the other end surface, and flowing a welding current to perform welding. .

  In addition, the outer conductor portion 13 has a sleeve 2 knitted with a fiber of a heat-resistant insulating non-metallic inorganic material such as glass or ceramics inserted into at least a part of the outer surface. In the case of FIG. 1A, the sleeve 2 formed of glass fiber is inserted except for the vicinity connected to the sealing wire portion 11 and the vicinity of both ends of the outer conductor portion 13 connected to a terminal member such as a base. It is worn.

  This sleeve 2 is formed in a hollow shape by knitting glass fibers, has a relatively excellent heat resistance, and is treated with a surface treatment with a curable coating material of silicon resin, fluorine resin or polyimide resin. The knitting of the part is not unraveled.

  The insertion of the sleeve 2 to the predetermined position of the outer conductor portion 13 is performed in a state where the outer conductor portion 13 is in the state of a long strand before being cut, even after connection of the respective straight lines 11, 12, and 13. It may be formed at a predetermined interval.

In addition, since the sleeve 2 is knitted with fibers, it has elastic elasticity so that the gap between the two can be reduced and no special fixing is required. Becomes difficult. If there is a possibility of movement of the sleeve 2, at least a part thereof, for example, an inorganic adhesive excellent in heat resistance (Na ₂ SiF ₂ (35% by mass) -Al ₂ O ₃ (30% by mass) -SiO ₂ (remainder) )) Or an organic adhesive (cyanoacrylate, epoxy resin, silicone (Si—CH ₂ —CH ₂ —Si), etc.).

  Since such an adhesive remains flexible even after application formation, it can respond to movements such as bending and connection position of the external conductor portion that is originally flexible and wired in the base. And can be easily bent. The organic adhesive may also be used as the curable coating material.

  Accordingly, since the lead-in wire 1A can be formed by inserting the sleeve 2 into the linear outer conductor portion 13, the setting of the covering position can be surely ensured, automation can be easily performed, productivity can be increased, and cost can be reduced.

  Tubes such as fluorescent lamps and light bulbs are manufactured by an automatic machine, and the lead lines are picked up one by one from a hopper containing hundreds of lead lines in a stem (mount) machine or sealing machine. It has been adjusted. Occasionally, multiple lead wires may be supplied at the same time, resulting in defective stems or poorly sealed valves.The cause of this is due to the protruding beam of the welded portion of the lead wire or the catch due to the difference in outer diameter between the wires. If the wire outer diameter difference between the wires is large, a step portion is formed and the occurrence of defects increases.

  If the sleeve 2 is covered, the diameter of the outer conductor becomes larger than that of the outer conductor, and the difference between the diameter of the outer conductor and the sealing wire 13 increases. However, according to experiments by the present inventors, the introduction by the feeder of the existing stem manufacturing machine The supply of the wire 1A is possible up to a maximum outer diameter of about 1.8 mm, and if the thickness is about 2.0 times the maximum of the outer diameter of the outer conductor portion 13, the occurrence of defects is the same as in the prior art. If the thickness is less than 1.0 times, the heat resistance and mechanical strength of the sleeve may be lowered. If the thickness is more than 2.0 times, positioning is performed when the sleeve is covered with the lead-in wire. And the insertion becomes difficult, and when the lead-in wire with the sleeve is supplied in an automatic machine, the sleeve portion is caught in the machine and the supply path is clogged.

  Further, the covering length of the sleeve 2 may be in the range of 10 to 20 mm from a position about 15 mm away from the connecting portion of the outer conductor portion 13 and the sealing wire portion 11, and if this is less than 10 mm, the covering area by the sleeve And the risk of contact between the lead wires is increased, and if the distance exceeds 20 mm, the distance between the terminal portion of the base and the sleeve is reduced, making it difficult to connect the lead wire to the terminal portion. There are problems such as becoming.

  FIG. 2 shows a stem (mount) 3 for sealing a pair of lead wires 1A and 1A in a squeezed sealing portion 32 at one end of a flare stem tube (stem glass tube) 31 made of soft glass such as soda lime glass. The wire portions 11 and 11 are hermetically sealed on both sides around the exhaust pipe 4, and a discharge electrode 51 made of a filament coil is provided between the tips of the inner conductor portions 12 and 12. The filament coil 51 is connected with the leg portion at the end thereof being welded, driven or sandwiched between hook portions near the tips of the inner conductor portions 12 and 12.

  FIG. 3 shows an annular fluorescent lamp L1, in which the flared portions 33 of the stems 3 and 3 are sealed at both ends of a glass tube bulb 6 made of soda lime glass or the like forming a translucent airtight container, respectively. 61 is formed. The annular fluorescent lamp L1 or the like is generally formed by sealing the stems 3 and 3 at both ends of a straight tubular glass tube and then bending the glass tube to form the annular bulb 6. The stems 3 and 3 may be sealed after the glass tube is bent.

  Further, a protective film made of aluminum oxide or the like is formed on the inner surface of the bulb 6, and a phosphor film made of a three-wavelength light emitting phosphor is formed on the protective film, and a rare gas such as argon Ar is necessary inside. Mercury is enclosed according to

  Then, a base 7 such as a G10q type is attached so as to cover both the sealing portions 61, 61 at the end of the valve 6, and the external conductor portions 13, 13,. The annular fluorescent lamp L1 is completed by connecting to a terminal member (not shown).

  When the ring-shaped fluorescent lamp L1 is connected to a socket (not shown) of the terminal member of the base 7 and is supplied with power through a lighting circuit device (not shown), each outer conductor portion 13-sealed wire portion 11-inside A voltage is applied to both the electrodes 51 and 51 through the conducting wire portion 12, a discharge occurs between the electrodes 51 and 51, and the lamp L1 emits light. And this fluorescent lamp L1 can exhibit the light emission characteristic similar to the lamp of the conventional structure.

  In the lead wires 1A, 1A of the present invention, the outer conductor portions 13, 13,... Led out from the sealing portions 32, 32 of the stem 3 extend to the terminal member in the stem tube 31-the base 7. In the unlikely event that the intermediate portions contact each other by crossing or slackening, the outer conductor portions 13, 13,... Are covered with the sleeve 2 made of electrically insulating glass fiber over almost the entire length. There is no electrical continuity, that is, no short circuit occurs, the lamp L1 does not become inconspicuous, and the lighting circuit device is not damaged.

  In addition, the fluorescent lamp L1 using the lead-in wire 1A can be processed and manufactured without any change in existing lamp manufacturing equipment such as an existing stem manufacturing machine, and there is no need to insert a special insulating tube. And improve quality and reduce costs.

FIG. 4 is a longitudinal sectional view of an essential part showing an embodiment of another bulb (annular fluorescent lamp) of the present invention. In FIG. Omitted. (The stem (mount) 3 shown in the figure may be sealed by rotating 90 degrees so that the electrode 51 does not approach the bulb 1 wall as in the lamp L1 of FIG.
The annular fluorescent lamp L2 shown in FIG. 4 is small and highly efficient, and the outer diameter of the glass tube bulb 6 made of soda lime glass or the like forming a translucent airtight container is reduced to about 16.5 mm. The outer diameter of the stem tube 31 of the stem 3 is also as thin as about 6 to 10 mm. Further, in order to form the coldest part for optimizing the vapor pressure of mercury in the bulb 1 in the sealing part 61, the height of the pair of left and right stems (mounts) is changed by changing the length 3T of the stem tube 31 part. The stem 3H side, which is different in height, has a stem (mount) height 5T (height from the sealing portion 61 to the electrode 51) of about 30 to 40 mm, whereas the stem 3L side, which has a low height, has a stem. (Mount) Height 5T is configured with a height different from about 18 to 28 mm. In the figure, 65 is a protective film made of aluminum oxide or the like formed on the inner surface of the bulb 6, and 66 is a phosphor film 66 formed on the protective film 65 with a phosphor of a three-wavelength emission type.

In this lamp L2, for example, the lead-in wire 1A has a copper layer on the surface of the core wire made of an alloy of about 42% by weight of nickel Ni and about 58% by weight of iron Fe in which the sealing wire part 11 is sealed with soft glass. In this case, the jumet wire has an outer diameter of about 0.35 mm, a length of about 2 mm, and a thermal expansion coefficient (30 to 400 ° C.) of about 95 to 100 × 10 ⁻⁷ / ° C. ⁻¹ . The inner conductor portion 12 is made of an Fe / Ni alloy wire having an outer diameter of about 0.6 mm and a length of about 18 mm.

  Further, the outer conductor portion 13 is made of copper Cu wire having an outer diameter of about 0.5 mm, and is 10 to 20 mm from a predetermined portion, for example, about 15 mm away from the connection portion with the sealing wire portion 11, and here, about 15 mm. A sleeve 2 having an inner diameter of about 0.6 mm and an outer diameter of about 0.8 to 1.2 mm is inserted by knitting a glass fiber having heat resistance and electrical insulation over a range.

  Then, the flared portions 33 of the stems 3 and 3 are sealed at both ends of the glass tube bulb 6, and after the exhaust in the bulb 6 and mercury and rare gas are sealed, the flare portions 33 are formed at both ends of the bulb 6. A GZ10q-type base (not shown) is attached so as to cover between the sealed portions 61, 61, and the outer conductor portions 13, 13,... Extending from both the sealed portions 61, 61 are used as terminal members of the base. An annular fluorescent lamp L2 is configured by connection.

  Also in the annular fluorescent lamp L2, the outer conductor portions 13 and 13 led out from the sealing portions 32 and 32 of the stem 3 of the lead-in wires 1A and 1A extend to the terminal member in the stem tube 31 and the base 7. In particular, the stem 3H side in which the stem tube 31 is lengthened to increase the stem (mount) height 5T is near the portion where the outer conductor portions 13 and 13 are most likely to approach or intersect each other, for example, the stem tube 31 here. Since it is covered with the sleeve 2 made of heat-resistant and electrically insulating glass fiber from the inside to the outside of the sealing portion 61, even if they are in contact with each other by crossing or slacking in the middle portion, electrical conduction In other words, it is possible to prevent the sleeve 2 from being an insulating layer, causing a short circuit and preventing the lamp L2 from being broken, or causing damage to the lighting circuit device.

  FIG. 5 is a partial sectional front view showing the lighting device 9 of the annular fluorescent lamp L1 (or L2) shown in the above embodiment. In the figure, reference numeral 91 denotes a housing that forms an instrument main body having an outer shape that is circular or square, and a fixture (not shown) for a ceiling surface or the like is provided outside the housing 91. Further, a high-frequency lighting circuit device 92 including a power supply connection mechanism and an inverter lighting circuit and a lamp holder 93.93 are provided above the housing 91, and an annular fluorescent lamp L1 is attached to the holder 93.93. Yes.

  Reference numeral 94 denotes a socket connected to the lighting circuit device 92, which is attached to the terminal portion of the base 7 of the fluorescent lamp L1. Reference numeral 95 denotes a light control body composed of a light diffusing plate or the like attached to the opening of the instrument main body 91.

  And this lighting fixture 9 can light the fluorescent lamp L1 by being fed through the high frequency lighting circuit device 92-socket 94-base 7 from the power source, and the lamp L1 is short-circuited in the external conductor portion of the lead-in line, etc. It is possible to complete the service life.

  Note that the present invention is not limited to that shown in the above embodiment. For example, in the above embodiment, the lead-in wire 1 </ b> A is composed of three parts (parts) in which the inner conductor portion 12 and the outer conductor portion 13 are joined to the front and rear end faces of the sealing wire portion 11, and the outer conductor portion 13 has heat-resistant electrical insulation. A sleeve 2 knitted with a non-metallic material fiber is inserted, but the lead-in wire is formed by forming the sealing wire portion 11 and the outer conductor portion 13 with the same material, for example, dumet wire, as shown in FIG. If it joins with the inner conductor part 12, it can comprise by two parts (parts), and the sleeve 2 should just be attached to the predetermined part of the sealing wire part 11 in this case. Although not shown, the sealing wire portion 11, the inner conductor portion 12, and the outer conductor portion 13 are formed of one part (part) such as a common same material such as a dumet wire, and the sleeve 2 is inserted into a predetermined portion to introduce the lead wire. It is good.

  Further, the hermetic container is a valve or stem made of glass, and the number of introduction lines sealed in one container is not limited to two, and may be two or more.

  Even if the total number of lead-in lines sealed to one stem or the like is not the lead-in lines 1A and 1B shown above, for example, when two lead-in lines are used, one of the lead-in lines and three lines are used. If two lead wires are used, two of the lead wires may be the lead wires 1A and 1B, and the other lead wire can prevent a short circuit or a discharge accident in the unlikely event even if a conventional lead wire is used. be able to.

  In addition, the tube of the present invention includes a straight tube with less bending in the outer conductor portion led out than a ring-shaped fluorescent lamp, such as a bulb-shaped fluorescent lamp or a compact fluorescent lamp, in addition to the ring-shaped fluorescent lamp of the above embodiment. The present invention can be applied to various fluorescent lamps such as shaped fluorescent lamps, ultraviolet radiation lamps, rare gas light emitting lamps, neon lamps, lighting tubes, high-pressure discharge lamps, and other light bulbs such as general light bulbs and special light bulbs.

  For example, a lamp having a very thin stem tube such as a lighting tube or a neon lamp or a bulb in which a plurality of lead wires are arranged in a stem glass tube has a plurality of light emitting sources, for example, two filament coils. Vehicle light bulbs supported by three lead wires, display discharge lamps having three discharge electrodes supported by three lead wires, etc. (one of the three lead wires is a common lead) Wire) In the case where the output and light emission position can be switched with a single light bulb or lamp, the introduction wire of the present invention makes it inconvenient due to mutual contact or short circuit due to proximity in the outer conductor portion. Can be prevented.

  Moreover, although the case where the glass tube which has a flare part was used as the stem was described in the above embodiment, the stem is not limited to this, and a stem using a glass tube without a button stem or flare part may be used. , Sealing is burned out or burned and drawn, and the lead wire is directly connected to the valve from the sealing part at the end of the valve such as crushing (pinch seal) or sealing by baking and drawing through the bead stem. The present invention can also be applied to a tube that derives.

  That is, by using the lead-in wire of the present invention, a heat-resistant and electrically insulating sleeve is inserted in the outer conductor portion led out from the valve end portion, so that the lead-out extension extends to the connection terminal member such as a base or a holder. Even if it makes it, it can prevent generation | occurrence | production of a short circuit, discharge, etc. by the proximity | contact or contact with other conductors, such as an outer conducting wire part and a nozzle | cap | die.

Drawing (a) and (b) is a front view showing an introductory line of an embodiment of the invention, respectively. It is a front sectional view showing a section of a stem (mount) manufactured using the lead-in wire of the present invention. It is a front view which shows the bulb | ball (ring-shaped fluorescent lamp) of embodiment of this invention. It is front sectional drawing which cuts and shows the principal part of the other bulb | ball (annular fluorescent lamp) of embodiment of this invention. It is a partial cross section front view which shows the lighting fixture equipped with the bulb | ball (ring-shaped fluorescent lamp) shown in FIG.

Explanation of symbols

L1, L2: Tube (annular fluorescent lamp), 1A, 1B: Lead wire, 11: Sealed wire portion, 12: Inner conductor portion, 13: Outer conductor portion, 2: Sleeve,
3: stem (mount), 31: flare tube, 32: sealing portion, 51: electrode (discharge electrode), 6: translucent airtight container (glass (tube) bulb), 61: sealing portion, 7: base ,

Claims (8)

  A tube comprising an inner conductor portion, a sealing wire portion, and an outer conductor portion covered with at least a part of a sleeve formed of a fiber of a heat-resistant and electrically insulating nonmetallic inorganic material Introductory line.   2. The tube lead-in wire according to claim 1, wherein the sealing wire portion and the outer conductor portion are a single wire.   3. The lead-in wire for a tube according to claim 1, wherein the fibers of the heat-resistant electrical insulating non-metallic inorganic material are made of glass or ceramics.   The thickness of the sleeve made of the heat-resistant and electrically insulating nonmetallic inorganic material fiber is 1.0 to 2.0 times the outer diameter of the outer conductor portion. An introduction line for a tube described in 1.   The tube according to any one of claims 1 to 4, wherein the heat-resistant and electrically insulating non-metallic inorganic fiber sleeve is covered with a length of 10 to 20 mm on the outer conductor portion. Introductory line.   6. The tube lead-in wire according to any one of claims 1 to 5, wherein an inorganic or organic adhesive is applied to the sleeve made of the heat-resistant and electrically insulating non-metallic inorganic material. A light-transmitting hermetic container having a sealing portion formed directly or at the end via a stem;
7. The plurality of tubes according to claim 1, wherein a sealing wire portion is sealed to the stem or sealing portion of the container end portion, and the outer conductor portion is extended outside the container. For the introduction line;
An electrode provided on the inner conductor in the container;
A tube characterized by comprising: A translucent airtight container having a sealing portion formed at both ends via a stem or directly;
The stems having different heights are sealed at symmetrical positions on both ends of the container, the sealing wire portion is sealed to the sealing portion of the stem, and the outer conductor portion is extended outside the container. A plurality of tube lead-in wires according to any one of the above;
An electrode provided on the inner conductor in the container;
A phosphor film formed on the inner surface of the container and a discharge medium sealed in the container;
A tube characterized by comprising:

Images