KR20080063096A - Connector for the discharge tube - Google Patents

Abstract

A connector for a discharge tube is provided to be easily assembled to the discharge tube without damaging the discharge tube. A connector for a discharge tube includes a coupling unit(6a). The coupling unit is mounted on an end of the discharge tube and includes a locking surface part(7), a protrusion(9), and a conductive connection part(8). The locking surface part locks a light emitting portion of the discharge tube. The protrusion is protruded from the locking surface part along an end electrode. The conductive connection part is formed on the protrusion to electrically connect the end electrode and a substrate electrode as a conductive contact surface(8a) is in contact with the end electrode and the other conductive contact surface is in contact with the substrate electrode.

Description

Discharge Tube Connectors {CONNECTOR FOR THE DISCHARGE TUBE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge tube connector for electrically holding a discharge tube such as a flash discharge tube in a conductive connection with a circuit board.

In many lighting devices, a discharge tube is provided as a light source. For example, the strobe apparatus used for camera photography is provided with the linear tube-shaped flash discharge tube, the circuit board, and the reflecting plate, and collects the light by the light emission of a flash discharge tube by a reflecting plate, and irradiates a subject. If one of the conventional examples of such a stroboscopic apparatus is demonstrated concretely using FIG. 25, this strobe apparatus flashes the end electrode 2a which protrudes as a pin terminal from the light-emitting part 2b of the flash discharge tube 1; Plug and hold the discharge tube 1 into the reflecting plate 3 provided so as to enclose it, and lead wire 4 extending from the end electrode 2a is electrically connected by soldering to the board electrode 5a on the circuit board 5. have. When emitting light, a high voltage is generated by a circuit (not shown) formed in the circuit board 5, and a voltage of 280 V to 330 V is applied between the end electrodes.

By the way, since high voltage is applied to the flash discharge tube 1, the wire diameter of the lead wire 4 is thick and rigidity is strong. Therefore, when the lead wire 4 comes into contact with the circuit board 5 or the like when the flash discharge tube 1 is assembled to the strobe apparatus, the lead wire 4 is not bent and the impact is transmitted directly to the flash discharge tube 1, thereby causing a flash. There is a problem that damage such as cracking occurs in the light emitting portion 2b of the discharge tube 1. In order to avoid this problem, for example, in the invention described in JP-A-5-165085, the lead wire is removed, and the electrode and the circuit board are electrically connected by contacting the electrode with an elastic metal plate. In addition, in the invention described in Japanese Patent Application Laid-Open No. 8-297312, the electrode is held by a flat plate terminal having a lead wire removed and a key cut, and the electrode and the circuit board are electrically connected.

In the above-described invention, since no lead wire is used, damage such as cracking or the like to the light emitting portion 2b of the flash discharge tube 1 is not easily generated. However, in the invention described in JP-A-5-165085, the elastic metal plate connected to the electrode must be soldered to the circuit board, and in the invention described in JP-A-8-297312, the electrode and the flat plate terminal are You must solder. Since such soldering work requires labor and labor, damage to the flash discharge tube 1 can be reduced, but assembly and mounting work is difficult.

SUMMARY OF THE INVENTION The present invention has been made under such a background, and an object of the present invention is to provide a discharge tube connector which can easily be assembled and mounted without damaging the discharge tube during assembly and mounting.

In order to achieve the above object, the present invention is configured as follows. That is, in the discharge tube connector which has a light emitting part and the end electrode which protrudes from the edge part of a light emitting part, and connects the said end electrode with the board | substrate electrode of a circuit board, it has the holding | maintenance part attached to the edge part of a discharge tube, And a discharge connection connector including a conductive connection portion for electrically connecting the end electrode and the substrate electrode to the holding portion.

The holding part attached to the edge part of a discharge tube is provided, and since the holding part has a conductive connection part which electrically connects the said end electrode and the said board | substrate electrode, an end electrode and a circuit board can be electrically connected without using a lead wire. Therefore, damage such as cracking of the light emitting portion of the discharge tube does not occur due to the impact transmitted from the lead wire. Further, in a conventional discharge tube having a lead wire, bending is performed to connect the lead wire with a circuit on a circuit board when the discharge tube is assembled to the apparatus, but at this time, a curved load is applied to the light emitting portion of the discharge tube, Easy to break However, unlike the prior art, since the present invention does not use a lead wire, the discharge tube can be assembled to the apparatus without applying a curved load to the light emitting portion and without soldering.

Moreover, the holding part can be formed into a molded body of a rubbery elastic body. Since the holding portion is a molded body of a rubbery elastic body, the light emitting portion formed of a brittleness material such as glass can be kept in a flexible state, and the shock applied to the discharge tube can be absorbed by the buffering action of the rubbery elastic body. Therefore, it is possible to prevent breakage of the discharge tube or the like, or to prevent contact failure between the end electrode and the substrate electrode due to the impact. In addition, since the holding portion is easily deformed even when assembling the discharge tube, the discharge tube can be hooked to the discharge tube connector without applying excessive force. Therefore, the light emitting portion of the discharge tube is not easily damaged during assembly.

In addition, since the conductive connection portion also has a rubbery elasticity, it is possible to sufficiently secure the connection between the discharge tube and the conductive connection portion by pressing the end electrode of the discharge tube to the conductive connection portion, and also reduce the excessive force applied to the light emitting portion of the discharge tube. have. In addition, since the soldering operation can be omitted, assembly and mounting do not take time, the production is easy and the production cost can be lowered.

The conductive connecting portion can be formed of a conductive material in which the magnetic conductor is oriented in the conductive connecting direction. Since the conductive connection portion is formed of a conductive material in which the magnetic conductor is oriented in the conductive connection direction, a discharge tube connector having a conductive connection portion excellent in orientation even though small can be produced.

The discharge tube connector which protrudes and provides the contact surface with the end electrode of a conductive connection part with respect to the peripheral surface of a conductive connection part can be made. Since the contact surface with the end electrode of a conductive connection part protrudes with respect to the peripheral surface of a conductive connection part, since the end electrode of a discharge tube is strongly pressed against a conductive connection part, reliable conductive connection of an end electrode and a conductive connection part can be ensured.

In the holding portion, a discharge tube connector can be formed in which a pressurizing protrusion for raising the contact pressure in the conductive connection direction between the conductive connection portion and the end electrode is provided. Since the holding portion is provided with a pressurizing protrusion for raising the contact pressure in the conductive connection direction between the conductive connecting portion and the end electrode, when the pressure for fixing the discharge tube connector is applied to the pressing protrusion, the pressing protrusion is pressed and the pressing force of the discharge tube and the conductive connecting portion is increased. Increases. Therefore, the conductive connection of both sides can be ensured more.

It is possible to make a discharge tube connector having a holding surface portion in which the holding portion is caught by the outer circumferential surface of the light emitting portion of the discharge tube. Since the holding portion has a locking surface portion that is caught by the outer circumferential surface of the light emitting portion of the discharge tube, the discharge tube can be reliably held.

It is possible to make a discharge tube connector having a holding surface portion that the holding portion is caught by the end electrode of the discharge tube. Since the holding portion has a catching surface portion that is caught by the end electrode of the discharge tube, the holding force of the discharge tube by the catching surface portion is caught by the catching surface portion and transmitted to the end electrode as it is. In other words, the holding force of the discharge tube by the engaging surface portion also becomes the pressing force of the end electrode against the conductive connecting portion, and can ensure reliable electrical connection of the end electrode of the discharge tube and the conductive connecting portion. In addition, if caught by the end electrode, excessive force is applied to the light emitting portion, and damage to the light emitting portion is not easily generated.

The conductive connecting portion can make a discharge tube connector whose contact surface with the end electrode is exposed to the engaging surface of the engaging surface portion that is caught by the end electrode of the discharge tube. Since the contact surface with the end electrode is exposed to the engaging surface of the engaging surface portion caught by the end electrode of the discharge tube, the holding force of the discharging tube by the engaging surface portion is caught by the engaging surface portion and becomes a pressing force to the end electrode, thereby conducting the end electrode and the conductive surface. Reliable electrical connection of the connecting portion can be achieved.

The engaging surface portion may be a cylindrical discharge tube connector having a bottom. Since the engaging surface part is made into a bottomed tubular shape, the end of the discharge tube can be reliably held. Further, since the end electrode is covered by the bottomed cylindrical engaging surface portion, the dust-proof action can be exerted on the contact portion of the end electrode and the conductive connection portion, and a good contact state can be maintained.

The conductive connecting portion penetrates in the conductive connection direction with respect to the engaging surface portion caught by the end electrode, and can be made of a discharge tube connector in which the ends of the conductive connecting portion are respectively exposed on both outer peripheral surfaces of the engaging surface portion. The conductive connecting portion penetrates in the conductive connection direction with respect to the engaging surface portion caught by the end electrode, and the ends of the conductive connecting portion are exposed on the outer circumferential surfaces of both of the engaging surface portions, respectively. When either one of the outer peripheral surfaces is opposed to the circuit board, the substrate electrode and the end electrode can be electrically connected to each other, and the assembly and mounting work can be simplified.

Two contact surfaces of the conductive connecting portion with respect to the end electrode of the discharge tube are each formed to have a width wider than the diameter of the end electrode, and when the pressing projection is pressed, these two contact surfaces may contact each other around the end electrode. Can be made with discharge tube connector. The two contact surfaces of the conductive connecting portion to the end electrode of the discharge tube are each wider than the diameter of the end electrode, so that the two contact surfaces can contact each other around the end electrode when the pressing protrusion is pressed. Therefore, the contact area of the conductive contact surface of the end electrode and the conductive connecting portion can be increased, and the end electrode and the conductive connecting portion can be electrically connected reliably.

The discharge tube connector can be provided which has the holding part attached to one end side and the other end side of a discharge tube, and the connection part which extends along the longitudinal direction of a discharge tube, and connects holding parts, respectively. The holding part to be mounted on one end side and the other end side of the discharge tube and the connecting portion extending along the longitudinal direction of the discharge tube to connect the holding portions, so that the integral part connected to the holding portion for holding the discharge tube at both ends and the connecting portion It can be made, and it can attach easily to a discharge tube. Moreover, if it is set as the connection part which has rubbery elasticity, when a discharge tube is attached, a holding | maintenance part and a discharge tube can be reliably connected by the restoring force of a rubbery elastic body. That is, when the connecting portion is slightly extended when the holding portions are attached to both ends of the discharge tube, the discharge tube can be reliably fastened to the discharge tube connector by the restoring force of the rubbery elastic body.

The connection portion can make a discharge tube connector including a conductive connection portion for electrically connecting a trigger electrode provided in the light emitting portion of the discharge tube with respect to another substrate electrode of the circuit board. When the discharge tube is provided with a trigger electrode like the flash discharge tube, the conductive connection between the trigger electrode and the circuit board is also required. In addition to the conductive connection portion for electrically connecting the end electrode of the discharge tube and the circuit board, the conductive connection portion for electrically connecting the trigger electrode of the discharge tube and the circuit board can be provided reliably without soldering the conductive connection of the trigger electrode and the circuit board. have. Even when the reflecting plate is sandwiched between the discharge tube and the circuit board, the conductive connecting portion can elastically conduct conductive contact with the reflecting plate, and damage such as cracking of the light emitting portion of the discharge tube can be prevented from occurring easily.

The holding portion can be a discharge tube connector provided with a mounting portion of a reflecting plate that reflects light from the light emitting portion. Since the holding portion is provided with a mounting portion of a reflecting plate that reflects light from the light emitting portion, positioning of the reflecting plate and the discharge tube connector can be performed, and mounting of the reflecting plate to the discharge tube connector is easy. Moreover, even in the case of the discharge tube connector which has a connection part, a reflecting plate can be pinched | interposed between a discharge tube and a discharge tube connector. The mounting groove for inserting and mounting the reflector corresponds to this mounting portion.

The holding portion and the connecting portion can be a discharge tube connector which is an integral molded body made of a rubber-like elastic body. Since the holding portion and the connecting portion are formed as an integral molded body made of a rubber-like elastic body, for example, using a liquid resin composition in which a conductive material is dispersed in a liquid polymer, a manufacturing method for concentrating and orienting the conductive material in a mold is employed. It is available. Thus, since it is integrally obtained from one material, the discharge tube connector can be manufactured simply and at low cost.

The holding portion may be a rubber-like elastic body, and the connecting portion may be a discharge tube connector which is an integrally formed body made of a resin film. Since the holding portion is a rubber-like elastic body and the connecting portion is formed of an integral molded body made of a resin film, it can be easily integrally molded by a manufacturing method of injecting the liquid resin composition to be the holding portion after inserting the resin film into the mold. Therefore, the discharge tube connector can be manufactured at low cost. Moreover, since the connection part was made into the resin film, thickness reduction of a discharge tube connector can be aimed at.

In the discharge tube connector of this invention, the electrode of a discharge tube and a circuit board can be electrically connected without using a lead wire, and a soldering step can be skipped. In addition, it can be easily assembled to the discharge tube and the device, and it is possible to prevent damage such as cracking of the light emitting portion of the discharge tube easily.

The content of the present invention is not limited to the above description, and the advantages, features, and uses of the present invention will be further clarified according to the following description described with reference to the accompanying drawings. In addition, it should be understood that all the appropriate changes within the scope of the present invention are included within the scope of the present invention.

The discharge tube connection holder which does not produce damage easily to the discharge tube at the time of assembly mounting, and which can carry out assembly mounting easily is provided.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings. Throughout the drawings, reference numerals describe parts or parts. Incidentally, overlapping descriptions of structures, materials, manufacturing methods, and the like which are common in the embodiments are omitted.

1 to 3: The discharge tube connector 6 of the first embodiment is shown in FIGS. 1 to 3. Fig. 1 shows a perspective view of the discharge tube connector 6 of this embodiment, Fig. 2 shows a cross-sectional view taken along the line II-II of Fig. 1, and Fig. 3 shows an enlarged cross-sectional view of the portion R of Fig. 2. The discharge tube connector 6 is provided with the holding part 6a attached to the edge part of the discharge tube 10, The holding part 6a has the holding surface part which hold | maintains the light emitting part 10b of the discharge tube 10 ( 7), protrusion pieces 9 protruding from the engaging surface portion 7 along the end electrode 10a, and conductive connecting portions 8 provided on the protrusion pieces 9 to conduct the end electrode 10a and the substrate electrode. Have

The locking surface portion 7 is caught by the outer circumferential surface of the light emitting portion 10b of the discharge tube 10. Although the shape is a substantially cylindrical shape, the cutting part 7a is formed between the both ends along the barrel axis direction, and the gripping click 7b of arm shape which mutually faces is formed. That is, the cross-sectional shape of the vertical direction with respect to a cylindrical shaft is formed in substantially C-shape.

In the barrel axis direction of the locking surface portion 7, a protrusion 9 extending from the locking surface portion 7 is formed. As shown in FIG. 2, the protrusion 9 has a stepped portion 9a projecting from the locking surface 7c in contact with the discharge tube 10 on the inner circumferential surface of the locking surface portion 7 in a direction perpendicular to the cylindrical shaft. And a conductive connecting portion 8 having a vertical direction with respect to the cylindrical axis direction of the locking surface portion 7 as the energization direction is provided. Both ends of the conductive connecting portion 8 protrude in the energization direction from the surface of the protrusion piece 9 serving as the peripheral surface thereof, and form conductive contact surfaces 8a and 8b.

As shown in FIG. 3, the conductive connecting portion 8 is formed by connecting the conductive material 11 in the energizing direction in series to form a conductive path. The conductive contact surface 8a of one end of the conductive connecting portion 8 is formed. In contact with the end electrode 10a and in contact with the substrate electrode at the conductive contact surface 8b at the other end of the conductive connecting portion 8. In this way, the discharge tube 10 and the circuit board are electrically connected. When the holding portion 6a is formed of a rubbery elastic body, a conductive path made of a hard conductive material 11 is formed in the rubbery elastic body, so that the conductive connecting portion 8 has a hardness of about 20 to 80 in A hardness, preferably Has rubbery elasticity which becomes A-hardness of 30-60. Moreover, it is preferable that the conduction resistance of the electrically conductive connection part 8 is a low resistance of 10 ohms or less.

Here, the material of each member is demonstrated. As the holding part 6a, a material which is easy to mold, such as a rubbery elastomer or a synthetic resin, can be used. Examples of the rubbery elastomer include silicone rubber, natural rubber, isoprene rubber, butadiene rubber, 1,2-polybutadiene rubber, styrene butadiene rubber, chloroprene rubber, nitrile rubber, butyl rubber, ethylene propylene rubber, and chloro sulfonated polyethylene. Thermosetting elastomers such as rubber, acrylic rubber, epichlorohydrin rubber, fluororubber and urethane rubber, styrene thermoplastic elastomer, olefin thermoplastic elastomer, ester thermoplastic elastomer, urethane thermoplastic elastomer And thermoplastic elastomers such as amide-based thermoplastic elastomers, vinyl chloride-based thermoplastic elastomers, and fluorinated thermoplastic elastomers. Among these, silicone rubber which is excellent in electrical insulation and weather resistance is preferable. Moreover, general purpose resins, such as hard resin, such as a polyethylene resin, a polyester resin, an epoxy resin, a silicone resin, an ABS resin, and an acrylic resin, can be used for synthetic resin. Thus, when the holding part 6a is formed from a rubbery elastic body or synthetic resin, the whole discharge tube connector 6 can be integrally formed by one kind of metal mold | die, it becomes easy to manufacture, and manufacturing cost also becomes low. Of these materials, however, it is preferable to use a rubber-like elastic body in order to support the discharge tube 10 which is easily damaged by an external force and to establish a conductive connection with the circuit board. A rubbery elastic body having a hardness of about 10 to about 70 is preferable, and around 35 in A hardness is one of particularly preferred embodiments.

In the conductive material 11 forming the conductive path of the conductive connecting portion 8, a magnetic conductor is used in the magnetic field to form a state in which the rubber-like elastic body is connected in a resinous manner in a resinous form in a magnetic field. , Particles made of metal, ceramics, or the like, fibers, magnetic wire-shaped magnetic conductive media and the like are used. Specifically, nickel, cobalt, iron, ferrite, or an alloy containing a large amount thereof is preferable, and in addition, gold, silver, platinum, aluminum, nickel, copper, iron, palladium, cobalt, chromium, and the like having good conductivity are preferred. Alloys such as metals, stainless or the like, or powders or fine wires made of resins, ceramics, or the like may be plated with magnetic materials, or conversely, those having a good electrical conductivity plated on magnetic conductors may be used.

Next, the manufacturing method of the discharge tube connector 6 is demonstrated. First, a ferromagnetic conductive material 11 such as nickel or iron is added to a liquid polymer such as liquid silicone rubber to blend a liquid resin composition. On the other hand, a molding die having a cavity for the discharge tube connector 6 and embedded with the pin P for forming the conductive connection portion 8 is prepared. In this case, the fin P is made of a magnetic material in order to magnetically orient the conductive material 11. Next, by injecting the liquid resin composition into the cavity of the molding die and placing the molding die in the magnetic field, magnetic force is applied to the liquid resin composition in the cavity through the pins P, and the conductive material 11 is connected to the conductive connection 8. ) Is oriented. Then, the molding die is heated to cure the liquid resin composition. The cured molded body is demolded to obtain the discharge tube connector 6.

The discharge tube 10 is attached to the discharge tube connector 6 by pressing and holding the grip click 7b of the engaging surface portion 7 to insert the discharge tube 10. At this time, as shown in Fig. 2, the step (9a) is brought into contact with the end (end) of the light emitting portion 10b of the discharge tube 10. In this way, the position of the discharge tube 10 is aligned, and the end electrode 10a is accurately positioned on the conductive contact surface 8a of the conductive connecting portion 8, and secure contact between the end electrode 10a and the conductive connecting portion 8 is ensured. do. This is done to both ends of the discharge tube 10 in the case of the straight tube discharge tube 10. Next, the mounting on the circuit board is such that the discharge tube connector 6 holding the discharge tube 10 is connected so that the conductive contact surface 8b of the conductive connecting portion 8 is in contact with the substrate electrode on the circuit board (not shown). Place on. The fixing of the discharge tube connector 6 on the circuit board may be performed by bonding the discharge tube connector 6 and the circuit board with an adhesive, but the discharge tube connector 6 is pressed against the circuit board by a housing of an apparatus to be assembled and mounted. You can also stick to the clamping force.

The operation and effects of the discharge tube connector 6 of the present embodiment will be described. According to the discharge tube connector 6 of the present embodiment, since the end electrode 10a of the discharge tube 10 and the substrate electrode on the circuit board can be electrically connected through the conductive connecting portion 8 without using a lead wire, the discharge tube 10 It is possible to avoid damage such as cracking of the light emitting portion 10b. In particular, by providing a compression bar protruding from the conductive connecting portion 8, the conductive contact surfaces 8a and 8b of the conductive connecting portion 8 can be surely energized with respect to the end electrode 10a and the substrate electrode, respectively. Stable electrical connection can be realized.

If the holding portion 6a is formed of a rubbery elastic body, the conductive connecting portion 8 has rubbery elasticity, so that the conductive connecting portion 8 is pressed between the end electrode 10a and the substrate electrode on the circuit board to press the end portion. The electrode 10a and the substrate electrode can be electrically connected. Therefore, the soldering work can be omitted, assembly takes no time, and manufacturing cost can be reduced.

Since the cutting part 7a is formed in the engaging surface part 7, mounting and detachment of the engaging surface part 7 with respect to the discharge tube 10 can be made easy. Accordingly, even after the discharge tube connector 6 is fixed to the circuit board, the discharge tube 10 can be easily incorporated.

4-6: A discharge tube connector 12 of 2nd Example is shown in FIGS. 4 is a plan view of the discharge tube connector 12 of the present embodiment, FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 4, and FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. . The discharge tube connector 12 of this embodiment differs from the discharge tube connector 6 of the first embodiment in that the shape of the holding portion 12a and the connecting portion 14 which integrally connects the two holding portions 12a and 12a. And the point provided with the electrically-conductive connection part 16 with respect to a trigger electrode. In this embodiment, an example in which the flash discharge tube 17 is used as the discharge tube will be described.

That is, the discharge tube connector 12 is extended and maintained along the longitudinal direction of the holding | maintenance part 12a attached to the edge part of the flash discharge tube 17, and the flash discharge tube 17, as shown to FIG. 4 and FIG. The connection part 14 which connects parts 12a and 12a is provided. The holding portion 12a electrically connects the flashing discharge tube 17 with the engaging surface portion 13 to be engaged (stopped), the end electrode 17a of the flashing discharge tube 17, and a substrate electrode of a circuit board (not shown). The conductive connection part 15 is provided.

The holding part 12a is formed symmetrically so that the two holding parts 12a and 12a may face each other at both ends of the discharge tube connector 12. The engaging surface portion 13 included in the holding portion 12a is caught by the flash discharge tube 17. The locking surface portion 13 has a circular opening 13a at one end side and a bottomed cylindrical shape whose other end is closed by the bottom portion 13b, but a cutting portion extending from the end of the opening 13a to the bottom portion 13b. Has (13d). The inside of the locking surface portion 13 forms a locking surface 13e formed in a shape corresponding to the end electrode 17a or the light emitting portion 17b of the flash discharge tube 17, and the locking surface 13e emits light. Not only the outer peripheral surface of the part 17b but also the end electrode 17a is also caught. The outer circumferential surface 13f is formed in the outer side of the engaging surface part 13 in a rectangle so that the discharge tube connector 12 can be easily pinched between the circuit board and the device internal member. In this way, gripping clicks 13c whose outer walls face each other are formed.

The conductive connecting portion 15 provided in the holding portion 12a has a structure in which the conductive material 11 is arranged in the energizing direction similarly to the conductive connecting portion 8 of the discharge tube connector 6 shown in the first embodiment. Has the function of However, the conductive contact portion 15 is exposed to the engaging surface 13e of the engaging surface portion 13 by the conductive contact surface 15a, and the conductive connecting portion 15 forms part of the engaging surface portion 13. In addition, the conductive contact surface 15a protrudes from the peripheral surface of the conductive connecting portion 15. More specifically, as shown in FIG. 6, the conductive contact surface 15a of the conductive connection portion 15 protrudes from the periphery thereof while forming the locking surface 13e of the locking surface portion 13, thereby providing two grip clicks ( The conductive connection part 15 is located in the center of 13c, 13c. Thus, the holding force of the holding click 13c at the time of holding the flash discharge tube 17 is comprised so that the pressing force with respect to the electrically conductive contact surface 15a of the end electrode 17a may also become.

In the center of the connection part 14 which connects the holding parts 12a and 12a, the electrically conductive connection part 16 which electrically-connects with the trigger electrode (not shown) of the flash discharge tube 17 is formed. The structure of the conductive connection part 16 is the same as that of the conductive connection part 15, and the conductive material 11 is orientated. The conductive connecting portion 16 penetrates through the connecting portion 14 and protrudes in the energization direction from the surface of the connecting portion 14. The connection with the trigger electrode of the electrically conductive connection part 16 may be connected indirectly through a reflecting plate, and may be comprised so that it may directly connect with a trigger electrode, avoiding contact with a reflecting plate. At the boundary between the holding portion 12a and the connecting portion 14, as shown in Fig. 5, a mounting groove 13g is formed as a mounting portion for mounting the reflecting plate.

In the assembling and mounting of the discharge tube connector 12, first, the reflecting plate is fitted through the mounting groove 13g of the discharge tube connector 12. Next, the pin terminal serving as the end electrode 17a of the flash discharge tube 17 is inserted into the locking surface portion 13. At this time, the stage (end) of the light emitting portion 17b of the flash discharge tube 17 abuts against the step portion 13h protruding from the locking surface 13e serving as the inner circumferential surface of the grip click 13c. In this way, the end electrode 17a is accurately positioned on the conductive contact surface 15a of the conductive connecting portion 15, and the position of the flash discharge tube 17 and the discharge tube connector 12 can be aligned. Reliable contact of the conductive connecting portion 15 is ensured. The trigger electrode of the flash discharge tube 17 is brought into contact with an energizing piece provided on the reflecting plate, and the reflecting plate is brought into contact with the conductive contact surface 16a of the conductive connecting portion 16. After the flash discharge tube 17 is mounted, the conductive contact surface 15b of the conductive connecting portion 15 and the conductive contact surface 16b of the conductive connecting portion 16 are mounted on the substrate electrode on the circuit board, and the housing of the device to be assembled and mounted. Thus, the discharge tube connector 12 is pressed against the circuit board, and the discharge tube connector 12 is fixed on the circuit board.

The operation and effect of the discharge tube connector 12 of the present embodiment will be described. In addition to being able to exhibit the same effects and effects as the discharge tube connector 6 of the first embodiment, the following actions and effects can be exhibited. That is, according to the discharge tube connector 12, not only the edge electrode 17a but also a trigger electrode can carry out an electrical contact with a circuit board, without using a lead wire. Moreover, since the connection part 14 which connects two holding | maintenance parts 12a and 12a is provided, the two holding | maintenance parts 12a and 12a can be integrated and the flash discharge tube 17 can be attached easily. .

Since the engaging surface portion 13 is formed in a bottomed cylindrical shape, the end electrode 17a of the flash discharge tube 17 can be covered so that the end electrode 17a and the peripheral member cannot be easily contacted. ) And the insulation between the peripheral member can be increased, and the electricity is not easily leaked.

In addition, since the grip click 13c caught by the flash discharge tube 17 is caught by the end electrode 17a of the flash discharge tube 17, no excessive force is applied to the light emitting portion 17b, and the light emitting portion 17b is damaged. This doesn't happen. In addition, the conductive contact surface 15a of the conductive connecting portion 15 is exposed to the engaging surface 13e where the engaging surface portion 13 is caught by the end electrode 17a, and the conductive connecting portion 15 is part of the engaging surface portion 13. Since the holding force of the flash discharge tube 17 by the locking surface part 13 is transmitted to the end electrode 17a applied to the locking surface part 13 as it is. In other words, the holding force of the flash discharge tube 17 by the locking surface portion 13 is also a pressing force of the end electrode 17a with respect to the conductive connecting portion 15, thereby ensuring reliable electrical performance of the end electrode 17a and the conductive connecting portion 15. Connection can be planned.

7 to 11A: The discharge tube connector 18 of the third embodiment is shown in Figs. 7 is a plan view of the discharge tube connector 18 of the present embodiment, FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 7, and FIG. 9 is a cross-sectional view taken along the line IX-IX of FIG. . 10 and 11 show examples of the manufacturing process of the discharge tube connector 18. The discharge tube connector 18 of this embodiment differs from the discharge tube connector 12 of the second embodiment in that the cutting surface portion 19 of the holding portion 18a has no cutting portion 13d, and the locking surface portion 19 It is the position of the conductive connection part 25 in.

The discharge tube connector 18 of this embodiment connects two holding portions 18a and 18a holding the flash discharge tube 17 at both ends of the flash discharge tube 17 and the two holding portions 18a and 18a. The connection part 14 is provided. Moreover, each holding | maintenance part 18a is a conductive connection part which electrically connects the engaging surface part 19 which hangs on the flash discharge tube 17, the end electrode 17a of the flash discharge tube 17, and the board | substrate electrode of a circuit board not shown in figure. 25 and a conductive connection portion 16 for electrically connecting the trigger electrode of the flash discharge tube 17 and the substrate electrode of the circuit board.

The engaging surface portion 19 has a bottomed cylindrical shape similarly to the engaging surface portion 13 of the second embodiment, and the shape of the cross section perpendicular to the cylindrical cylindrical shaft with the bottom has a rectangular outer side as shown in Fig. 9. And the inside is circular. The bottomed cylindrical end has a circular opening 19a, and the other end is blocked by the bottom 19b. However, unlike the second embodiment, no cutting portion is formed. In addition, at the substantially center of the bottom part 19b, the column-shaped conductive connection part 25 which makes a cylinder direction the electricity supply direction is provided along the cylinder direction. The conductive contact surface 25a of the side which contacts the end electrode 17a of the flash discharge tube 17 among these conductive connection parts 25 protrudes inward from the inner surface 19c of the bottom part 19b, and the other conductive contact surface is other side. 25b protrudes outward from the outer surface 19d of the bottom portion 19b. In addition, the inner surface of the catching surface portion 19 has an outer circumferential shape of the flashing discharge tube 17 so as to form a catching surface 19c of the light emitting portion 17b and the end electrode 17a of the flashing discharge tube 17. It is formed in a corresponding shape.

The flash discharge tube 17 is mounted by inserting the end electrode 17a inside the engaging surface portion 19. When the flash discharge tube 17 is inserted to the inside of the engaging surface portion 19, the tip of the end electrode 17a is in contact with the conductive connecting portion 25. The trigger electrode of the flash discharge tube 17 is in contact with the conductive connecting portion 16.

Although the discharge tube connector 18 can also be manufactured similarly to the discharge tube connector 6 of 1st Example, the shaping | molding die 20 used for manufacture of the discharge tube connector 18 is shown by FIG. The upper mold 20a is provided with projections that serve as openings 19a of the engaging surface portion 19, and the lower mold 20b is provided with a cavity serving as the engaging surface portion 19. As shown in FIG. Since the mold 20 can be embedded in the upper mold 20a and the lower mold 20b, respectively, with the pin P for orienting the conductive material in the same direction, the conductive connecting portion 25 and the conductive connecting portion 16 are formed. It is easy to apply the magnetic field because the direction of energization of the can be matched. Therefore, in the discharge tube connector 18 obtained by such a molding die 20, although both ends of the connecting portion 14 are bent at right angles as shown in Fig. 11, the structure of the molding die is simplified, and the mold production cost and The manufacturing cost of the discharge tube connector 18 can be reduced. In addition, the production yield of the product can be increased. Even if the connection part 14 is bent, the connection part 14 which consists of rubber-like elastic bodies can be easily bent in the arrow direction of FIG. 11, and the flash discharge tube 17 can be attached easily.

The discharge tube connector 18 of the third embodiment can exhibit the same effects and effects as the discharge tube connector 12 of the second embodiment, and can also exhibit the following effects and effects. That is, according to the discharge tube connector 18, since the locking surface part 19 covers the whole of the end electrode 17a of the flash discharge tube 17, contact with a peripheral member can be prevented completely and high insulation can be ensured. have.

In addition, when the flash discharge tube 17 is attached to the discharge tube connector 18, the conductive connecting portion 25 acts to press the end electrode 17a by the restoring force of the connecting portion 14, thereby causing the flash discharge tube 17 and the discharge tube connector ( The conductive contact of 18) can be assured. In addition, if the flash discharge tube 17 and the discharge tube connector 18 can be mounted in such a pressure contact state, high dimensional accuracy of the contact position between both sides is unnecessary, and the manufacturing yield of the discharge tube connector 18 can be improved. have.

12 and 13: A discharge tube connector 21 of the fourth embodiment is shown in FIGS. 12 and 13. FIG. 12 is a perspective view of the discharge tube connector 21 of the present embodiment, and FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 12, respectively. The point that the discharge tube connector 21 of this embodiment differs greatly from the discharge tube connector 6 of the first embodiment is that the pressing projection 22e is applied to the engaging surface 22 of the holding portion 21a as shown in Figs. ) Is installed. The discharge tube connector 21 of the present embodiment includes a catching surface portion 22 that is caught and held by the discharge tube 10, and the catching surface portion 22 conducts the electrode of the discharge tube 10 and the substrate electrode of the circuit board. The conductive connection part 23 to connect is provided.

The shape of the locking surface portion 22 is substantially the same shape as that of the locking surface portion 13 in the discharge tube connector 12 of the second embodiment except that the cutting portion is not formed and covers the entire end of the discharge tube 10. As shown in FIG. 13, the inner circumferential surface also forms a locking surface 22c corresponding to the outer shape of the end portion of the discharge tube 10 to be mounted. The engaging surface portion 22 is provided with a conductive connecting portion 23 having a vertical direction with respect to the cylindrical axis direction as the energization direction. The conductive contact surface 23a on the connection end side of the conductive connecting portion 23 with the end electrode 10a is exposed to the locking surface 22c and is formed to protrude from the peripheral surface thereof. In addition, the conductive contact surface 23b on the connection end side of the conductive connecting portion 23 with the substrate electrode also protrudes from the peripheral surface thereof. Moreover, on the extension line of the conductive connection direction of the conductive connection part 23, the pressing protrusion 22e which protrudes outward from the outer peripheral surface 22d of the locking surface part 22 in the extension line direction is formed.

Since the locking surface portion 22 is provided with a pressing projection 22e protruding from the flat outer circumferential surface 22d on the outer side of the cylindrical locking surface portion 22, the discharge tube 10 is attached to the discharge tube connector 21 so that the device When assembled to, the pressing protrusion 22e of the conductive connecting portion 23 is pressed by a member such as a housing of the device, and the contact pressure between the end electrode 10a and the conductive connecting portion 23 can be increased in the conductive connecting direction, The conductive contact between the end electrode 10a and the conductive connecting portion 23 can be ensured. Moreover, the holding force of the discharge tube 10 and the discharge tube connector 21 in the end electrode 10a part of the discharge tube 10 can be improved. Therefore, since the pressure applied to the light emitting portion 10b of the discharge tube 10 can be reduced, it is possible to prevent the light emitting portion 10b from being easily damaged.

14th-16th: The discharge tube connector 24 of 5th Example is shown in FIGS. 14-16. 14 is a perspective view of the discharge tube connector 24 of the present embodiment, FIG. 15 is a cross-sectional view taken along the line XV-XV in FIG. 14, and FIG. 16 is a cross-sectional view taken along the line XVI-XVI in FIG. . The discharge tube connector 24 of the present embodiment differs from the discharge tube connector 21 of the fourth embodiment in that the conductive connecting portion 29 penetrates in the conductive connection direction with respect to the engaging surface portion 28 caught by the end electrode 10a. It is provided that the end portions 29b and 29d of the conductive connecting portion 29 are exposed to the outer circumferential surfaces 28c and 28c on both sides of the engaging surface portion 28, respectively.

The engaging surface portion 28 of the holding portion 24a is substantially the same shape except for the conductive connecting portion 29 described later, compared with the engaging surface portion 22 of the discharge tube connector 21 of the fourth embodiment. As shown in Fig. 15, the inner circumferential surface forms a locking surface 28b corresponding to the outer shape of the end portion of the discharge tube 10 to be mounted. The conductive surface exposed to the outer circumferential surfaces 28c and 28c on both sides of the locking surface portion 28 is formed in the locking surface portion 28 with the direction perpendicular to the cylindrical direction as the conductive connection direction, and penetrates the locking surface portion 28. The connection part 29 is provided. The conductive contact surfaces 29a and 29c on the connection end side of the conductive connecting portion 29 with the end electrode 10a are exposed on the locking surface 28b. Then, pressing projections 28d are formed on the conductive contact surface 29b or the conductive contact surface 29d of the conductive connection portion 29 at the connection end side with the substrate electrode, and protrude from the peripheral surface thereof. As shown in FIG. 16, the contact surface with the end electrode 10a in the electrically-conductive connection part 29 is formed so that a clearance may not arise with respect to the end electrode 10a which is circular arc-shaped and circular in cross-sectional shape. .

In the discharge tube connector 24 of this embodiment, it has the electrically conductive connection part 29 which extends to the opposite side of a board | substrate electrode, and penetrates the locking surface part 28 from the board | substrate electrode side to the end electrode side. That is, since the conductive connecting portion 29 is formed on both sides by sandwiching a portion where the end electrode 10a is disposed, the contact surface with the end electrode 10a in the conductive connecting portion 29 can be made large. Therefore, electrical connection with the discharge tube 10 can be attained sufficiently. Moreover, since the end electrode 10a is clamped and fixed from both sides by the electrically conductive connection part 29 of the same hardness, the fixing position of the discharge tube 10 can be stabilized and electrical connection can be ensured.

In addition, according to the discharge tube connector 24 according to the present embodiment, since the conductive connection portion 29 penetrates the engaging surface portion 28, the conductive contact surfaces 29b and 29d are assembled when the discharge tube 10 is assembled to the apparatus. If any one of them is opposed to the circuit board, it can be electrically connected and the assembly work can be simplified.

17-19: The discharge tube connector 31 of 6th Example is shown in FIGS. 17-19. 17 is a perspective view of the discharge tube connector 31 of the present embodiment, FIG. 18 is a cross-sectional view taken along the line XVIII-XVIII in FIG. 17, and FIG. 19 is a cross-sectional view when the discharge tube connector 31 is pressed. The difference between the discharge tube connector 31 of the present embodiment and the discharge tube connector 24 of the fifth embodiment is the configuration of the conductive connecting portion 33, in particular, of the conductive contact surfaces 33a and 33c with the end electrodes 10a of the discharge tube. Shape.

The engaging surface portion 32 of the retaining portion 31a is substantially the same shape as the outer peripheral surface 32c in comparison with the engaging surface portion 28 of the discharge tube connector 24 of the fifth embodiment. The shape of the locking surface 32b into which the electrode 10a is inserted is different. That is, the space in which the conductive contact surfaces 33a and 33c on the connection end side with the end electrode 10a are exposed to the engaging surface 32b and is surrounded by the conductive contact surface 33a and the conductive contact surface 33c is an end electrode 10a. We make gap V1 with). That is, the conductive contact surfaces 33a and 33c are flat with respect to the end electrode 10a having a circular cross-sectional shape, and the width H of the conductive contact surfaces 33a and 33c is larger than the diameter D of the end electrode 10a. In this way, the internal space into which the end electrode 10a is inserted has a rectangular parallelepiped shape. In the conductive connecting portion 33, the conductive contact surfaces 33b and 33d on the opposite side to the conductive electrode 10a are exposed to the outer peripheral surfaces 32c and 32c on both sides of the locking surface portion 32, and the conductive contact surface 33b is provided. And 33d each form a pressing projection 32d. With such a structure, when the discharge tube connector 31 having the discharge tube is assembled to the strobe apparatus or the like, the pressing projection 32d is pressed in the conductive connection direction, and as shown in FIG. The gap V1 disappears while expanding slightly outward. Then, the two conductive contact surfaces 33a and 33c sandwich the end electrode 10a and contact each other.

According to the discharge tube connector 31 according to the present embodiment, when the discharge tube 10 is assembled to the apparatus, the gap V1 disappears due to the pressurization of the pressing protrusion 32d, and the end electrode 10a is connected to the conductive connection portion 33. Since the two conductive contact surfaces 33a and 33c are closely contacted and sandwiched, the contact area between the end electrode 10a and the conductive contact surfaces 33a and 33c can be increased, so that the end electrode 10a and the conductive connecting portion 33 are closed. It can reliably connect electrically.

In this embodiment, although the contact surface of the conductive connecting portion 33 with the end electrode 10a is a flat rectangle, as shown in Fig. 20, the conductive contact surfaces 35a and 35c having an elliptical cross section are formed. It is also possible to form the discharge tube connector 34 which forms an elliptic gap V2 having a short axis of the conductive connection direction. In this embodiment, the space into which the end electrode 10a is inserted forms a cylindrical shape with an elliptical bottom surface. And the outer peripheral surface 36c of the engaging surface part 36 in the holding | maintenance part 34a is substantially the same shape compared with the engaging surface part 32 in the discharge tube connector 31 of 6th Example. In this case, when the pressing projection 36a protruding from the outer circumferential surface 36c is pressed in the conductive connection direction, as shown in FIG. 21, the two conductive contact surfaces 34a and 34c of the conductive connecting portion 35 are in contact with each other. The expansion deformation to the outside of the locking surface portion 36 can be reduced.

Modifications of the respective embodiments: In the above embodiments, the conductive contact portions 8a, 15a, 23a, 25a, 16a of the conductive connection portions 8, 15, 23, 25 and the conductive connection portions 16 are illustrated as flat surfaces. 22, the conductive contact surfaces 8a, 15a, 16a, 23a, and 25a of these conductive connecting portions 8, 15, 16, 23, and 25 are formed on the outer shapes of the end electrodes 10a, 17a and the reflecting plate. It is preferable to set it as a concave curved surface shape suitably. In this way, the contact area between the conductive contact surfaces 8a, 15a, 16a, 23a, 25a, the electrodes such as the end electrodes 10a, 17a, and the reflecting plate can be increased, and the conductive connection portions 8, 15, 16, 23 , 25) can increase the electrical conductivity.

About the conductive connection parts 8, 15, 16, 23, 25, 29, 33, the electrically conductive material 11 can also be disperse | distributed uniformly inside a rubbery elastic body. For example, a conductive rubber in which conductive carbon is dispersed by rolling mixing milling in a rubbery material may be used. Alternatively, the conductive coating film may arrive on the surface of the columnar rubbery elastic body, or an elastic body such as a metal spring may be provided inside the rubbery elastic body. In addition, the conductive connecting portions 8, 15, 16, 23, 25, 29, 33 in which the conductive material is continuously connected in the conduction direction of the rubber-like elastic body may be manufactured in advance. In this way, when manufacturing the discharge tube connector 6, 12, 18, 21, 24, 31, the conductive connection part 8, 15 in the metal mold | die for shaping the discharge tube connector 6, 12, 18, 21, 24, 31 is formed. , 16, 23, 25, 29, 33 may be insert-molded to simplify the mold structure.

The connection part 14 is provided in the discharge tube connectors 6, 21, 24, and 31 of the first embodiment and the fourth to sixth embodiments, or the discharge tube connector 12 of the second embodiment and the discharge tube connector of the third embodiment. It can be changed to remove the connection 14 from 16. In addition, the pressurizing protrusion 22e of 4th Example can be employ | adopted also about the discharge tube connector 12 of 2nd Example.

The connecting portion 14 in the discharge tube connector 6 of the second embodiment and the discharge tube connector 18 of the third embodiment is made of a rubber-like elastic body, but may be made of a resin film. In the case of such a discharge tube connector, both sides can be integrally formed by inserting the resin film used as a connection part in the metal mold which forms a discharge tube connector, and inject | pouring the liquid resin composition used as the holding parts 12a and 18a. 23 and 24, the discharge tube connector 26 which connected the holding part 21a shown in 4th Example with the connection part 27 which consists of resin films is shown. 23 is a plan view of the discharge tube connector 26, and FIG. 24 is a cross-sectional view taken along the line XXVI-XXVI in FIG. Since a resin film is used for the connection part 27, the thickness in the thickness direction of a resin film can be made thin compared with the connection part 14 using a rubbery elastic body. Therefore, the discharge tube connector 26 can be thinned. In addition, these connection parts 14 and 27 can be made from a thin metal plate. When the metal thin plate is used, the formation of the discharge tube connector can be maintained similarly to the case where the resin plate is used, and the alignment at the time of assembling and mounting on the circuit board is easy. However, when using a thin metal plate, it is necessary to insulate so as not to conduct electricity with the conductive connection parts 8, 15, 16, 23, 25, 29, 33, and even if it contacts with surroundings.

1 is a perspective view of a discharge tube connector of the first embodiment.

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

3 is an enlarged cross-sectional view of the region R of FIG. 2.

4 is a plan view of the discharge tube connector of the second embodiment.

5 is a cross-sectional view taken along the line V-V of FIG. 4.

6 is a cross-sectional view taken along the line VI-VI of FIG. 4.

7 is a plan view of the discharge tube connector of the third embodiment.

FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 7.

9 is a cross-sectional view taken along the line IX-IX of FIG. 7.

10 is an explanatory diagram of a discharge tube connector in the third embodiment.

11 is an explanatory view of a discharge tube connector in the third embodiment.

12 is a perspective view of the discharge tube connector of the fourth embodiment.

FIG. 13 is a cross-sectional view taken along the line XIII-XIII of FIG. 12.

Fig. 14 is a perspective view of the discharge tube connector of the fifth embodiment.

15 is a cross-sectional view taken along the line XV-XV of FIG. 14.

FIG. 16 is a cross-sectional view taken along the line XVI-XVI of FIG. 14.

Fig. 17 is a perspective view of the discharge tube connector of the sixth embodiment.

FIG. 18 is a cross-sectional view taken along the line XVIII-XVIII of FIG. 17.

19 is an explanatory cross-sectional view when the discharge tube connector of the sixth embodiment is pressed.

20 is a diagram corresponding to FIG. 18 of a modification of the discharge tube connector of the sixth embodiment.

FIG. 21 is a diagram corresponding to FIG. 19 when a modification of the discharge tube connector of the sixth embodiment is pressed; FIG.

22 is a cross-sectional view of the conductive connecting section common to each embodiment.

23 is a plan view of a discharge tube connector of a modification of the embodiment.

24 is a cross-sectional view taken along the line XXIV-XXIV of FIG. 23.

25 is an exploded perspective view of the stroboscope according to the prior art.

Claims (17)

A discharge tube which is mounted on a discharge tube 10 including a light emitting portion 10b and an end electrode 10a protruding from an end of the light emitting portion 10b to connect the end electrode 10a to a substrate electrode of a circuit board. In the connectors 6, 12, 18, 21, 24, 26, 31, 34,  And holding parts 6a, 12a, 18a, 21a, 24a, 31a, and 34a mounted at ends of the discharge tube 10, The holding portions 6a, 12a, 18a, 21a, 24a, 31a, and 34a are conductive connecting portions 8, 15, 23, 25, 29, 33, 35 which electrically connect the end electrode 10a and the substrate electrode. Including, discharge tube connector (6, 12, 18, 21, 24, 26, 31, 34). The method of claim 1, The holding parts 6a, 12a, 18a, 21a, 24a, 31a, 34a are discharge tube connectors 6, 12, 18, 21, 24, 26, 31, 34, which are molded bodies of rubbery elastic bodies. The method of claim 1, The conductive connection portions 8, 15, 23, 25, 29, 33, 35 are formed of the discharge tube connectors 6, 12, 18, 21, formed of the conductive material 11 formed by the magnetic conductors oriented in the conductive connection direction. 24, 26, 31, 34). The method of claim 1, The contact surfaces 8a, 15a, 23a, 25a of the conductive connecting portions 8, 15, 23, 25 with the end electrodes 10a protrude from the peripheral surfaces of the conductive connecting portions 8, 15, 23, 25. Discharge tube connectors (6, 12, 18, 21, 26). The method of claim 1, Pressing protrusions 22e, 28d, 32d, and 36a which increase the contact pressure in the conductive connection direction between the conductive connecting portions 23, 29, 33, 35 and the end electrode 10a to the holding portions 21a, 24a, 31a, and 34a. Discharge tube connectors (21, 24, 26, 31, 34). The method of claim 1, The holding portions 6a, 12a, 18a, 21a, 24a, 31a, and 34a are engaging surface portions 7, 13, 19, 22, 28, 32, 36 which are caught on the outer circumferential surface of the light emitting portion 10b of the discharge tube 10. Discharge tube connectors 6, 12, 18, 21, 24, 26, 31, 34. The method of claim 1, The holding portions 12a, 18a, 21a, 24a, 31a, and 34a include a catching surface portion 13, 19, 22, 28, 32, 36 that is caught by the end electrode 10a of the discharge tube 10. Connectors (12, 18, 21, 24, 26, 31, 34). The method of claim 1, Holding portions 12a, 18a, 21a mounted on one end side and the other end side of the discharge tube 10, respectively, and extending along the longitudinal direction of the discharge tube 10 to hold the holding portions 12a, 18a, 21a. Discharge tube connectors 12, 18, 26 comprising connecting portions 14, 27 for connecting. The method of claim 1, The holding part (12a) includes a mounting part (13g) of a reflecting plate for reflecting light from the light emitting part (10b). The method of claim 6, The engaging surface portion (13, 19, 22, 28, 32, 36) is a bottomed tubular, discharge tube connector (12, 18, 21, 24, 26, 31, 34). The method of claim 7, wherein The conductive connecting portions 15, 23, 25, 29, 33, and 35 have contact surface portions 13, 19, 22, 28, which contact surfaces 15a, 23a, 25a, 29a, 33a, and 35a with the end electrodes 10a. Discharge tube connectors 12, 18, 21, 24, 26, 31, 34, which are displayed on the engaging surfaces of 32, 36; The method of claim 7, wherein The engaging surface portion (13, 19, 22, 28, 32, 36) is a bottomed tubular, discharge tube connector (12, 18, 21, 24, 26, 31, 34). The method of claim 8, The connecting portions 14 and 27 include a discharge tube connector 12 including a conductive connecting portion 16 for electrically connecting a trigger electrode provided in the light emitting portion 10b of the discharge tube 10 with respect to another substrate electrode of the circuit board. , 18, 26). The method of claim 8, Discharge tube connector (12, 18), wherein the holding portions (12a, 18a) and the connecting portion (14) are integrally formed by rubber-like elastic bodies. The method of claim 8, The holding portion (21a) is a rubber-like elastic body, and the connecting portion (27) is a discharge tube connector (26) which is an integral molded body made of a resin film. The method of claim 12, The conductive connecting portions 29, 33, 35 penetrate in the conductive connection direction with respect to the engaging surface portions 28, 32, and 36 that are caught by the end electrode 10a. Discharge tube connectors 24, 31, and 34 whose ends of the conductive connecting portions 29, 33, 35 are exposed on the outer peripheral surfaces 28c, 32c, 36c on both sides, respectively. The method of claim 12, The two contact surfaces 33a, 33c, 35a, and 35c of the conductive connecting portions 33 and 35 to the end electrode 10a of the discharge tube 10 are each formed to have a wider width than the diameter of the end electrode 10a. And discharge tube connectors (31, 34), at the time of pressurizing the pressing projections (32d, 36a), these two contact surfaces (33a, 33c, 35a, 35c) are in contact with each other around the end electrode (10a).

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