JP2007165208A - Connector for cold-cathode tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a cold cathode tube that is easy for installing a cold cathode tube and an electrode wire, surely connected even the electrode wire has dispersion, easy for connecting without insert force with no bending deformation, a smaller size connector is available, surly connected with viewing the inside connecting condition thereof for confirmation, and easily applicable for both substrate mounting type or lead line type. <P>SOLUTION: A connector case is formed with a housing 2 and a cover 3. The housing 2 has formed a holding room for the cathode tube and a connecting room for containing a connector 4. A contact 8 has formed a pair of movable pieces 19 with contact members formed on their tips. The electrode wire 6 is inserted with loosely fitting between each movable pieces 19 by mounting the edge of the cold cathode tube 5 into the holding room. The contact member crimps the electrode wire 6 by pressing each movable pieces 19 of the contact 8 from the outside thereof when the cover 3 formed a pair of each protrusions for actuation is mounted to the opening of the housing 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention holds, for example, a cold-cathode tube (CCFL) mainly used for a backlight of a liquid crystal display device, the end of the cold-cathode tube is held by a connector, and an electrode line (also referred to as a dumet line). The present invention relates to a cold-cathode tube connector for connecting to a contact of a connection terminal accommodated therein and connecting to a power supply side via the connection terminal.

  Compared to hot cathode fluorescent lamps such as fluorescent lamps for general illumination, cold cathode fluorescent lamps can be made very thin because they have a simple electrode structure, and various electronic devices that perform liquid crystal display It is widely used as a backlight (backlight), but unlike the case of fluorescent lamps for general lighting, the diameter of the electrode wire is about 0.6 to 0.8 mm and it is easy to bend and the electrode wire Because of the short length and variations, the connection with the power supply side was difficult.

  The simplest connection method is to connect the electrode wire by soldering directly, but it is not always possible to connect it uniformly and securely, and work when replacing the cold cathode tube due to deterioration or other failure In particular, when the liquid crystal display device becomes large and requires many backlights as in recent years, there are problems such as poor work efficiency in soldering. For example, Patent Documents 1 to 4 propose the prior art to be used.

JP 2005-183011 A JP 2005-259370 A JP 2005-294019 A Japanese Patent No. 3568848

  In these cold cathode tube connectors according to these prior arts, for example, in Patent Document 1, the electrode wire of the cold cathode tube is bent into an L shape with respect to the connection terminal accommodated in the housing, and the tip side is fixed from the insertion hole. When the actuator pivoted on the housing is inserted between the piece and the elastic piece, the cam wall provided on the actuator presses the elastic piece and presses the electrode wire to the fixed piece side. This is applied to a board mounting type in which leg pieces of connection terminals are connected to a board to be supplied.

  In the case of Patent Document 2, when the actuator pivotally attached to the housing is rotated with respect to the connection terminal accommodated in the housing, the cam portion provided on the actuator is opened and closed by making contact with and separating from a pair of opposing operating pieces, Opening and closing a pair of opposing contacts formed integrally with each operating piece, and disconnecting the cam wire from the cold cathode tube electrode wire inserted between the contacts that were expanded against the elasticity by joining the cam portion In this connection structure, each contact point whose elasticity has been restored is sandwiched and pressed, and applied to a substrate mounting type in which leg pieces of connection terminals are connected to a substrate that supplies power.

  In the case of Patent Document 3, a connection terminal having a pair of openable and closable contact portions provided on the distal end side is accommodated in the housing, and an electrode wire of a cold cathode tube inserted into the housing through an insertion hole is connected to each contact portion. A contact structure is adopted in which the contact portions of the cold-cathode tubes are clamped between the contact portions by the reaction received by the expanded contact portions from the inner wall surface of the housing. It is applied to a lead wire type in which a lead wire for supplying power is connected via a crimping portion provided on the rear end side of the connection terminal.

  In the case of Patent Document 4, a holding base in which each holding portion for the end of the cold cathode tube and the leading end side of the lead wire is provided in an orthogonal shape, and a connection terminal is accommodated so as to be detachable from the holding base. A connector with a connection box to be fitted, and each contact for an electrode for connecting an electrode wire of a cold cathode tube formed in a forked shape with a slit sandwiched between the connection terminal and a lead wire for connecting the tip side of the connection terminal Are formed integrally in an orthogonal state, the end of the cold cathode tube and the leading end of the lead wire are placed on the holding base through each holding portion, the connection box is fitted, and the electrode wire and the lead wire are It has a connection structure in which the core wire is clamped between the slits of each contact and is applied to a lead wire type in which a lead wire for supplying power is connected.

  In the prior art including these patent documents, for example, in the case of Patent Document 1, since the tip end side of the electrode wire bent in an L shape is pressed against the connection terminal of the connector, it is necessary to lengthen the electrode wire. If it is too short, it cannot be applied, L-shaped bending is required, and the tip end side of the electrode wire is inserted through the insertion hole of the connector and the connection terminal. Issues that require solutions such as the possibility of bending inside, the structure that rotates the actuator, increasing the size, not being able to confirm the internal connection status, and being difficult to apply to the lead wire type was there.

  Further, in the case of Patent Document 2, since the cam portion has a structure that pushes between the contact points against elasticity, the structure of the connection terminal is complicated and difficult to mass-produce, and the actuator is rotated. There existed a subject which needs solutions, such as enlarging by a structure, the assembly of a connector not being easy, and being difficult to apply to a lead wire type.

  In addition, in the case of Patent Document 3, since an electrode wire is inserted between each elastic contact portion, a large insertion force is required, and there is a possibility that the electrode wire is bent and deformed and cannot be reliably connected. There is a problem that needs to be solved, such as that the connection state cannot be confirmed and that it is not easy to apply to the board mounting type.

  In addition, in the case of Patent Document 4, it is necessary to set the core wires of the electrode wire and the lead wire separately in two places, so that the assembly work at the time of mass production is complicated, and the electrode wire is connected between each elastic contact portion. Since both core wires of the lead wire are inserted at the same time, a large insertion force is required, and there is a possibility that the electrode wire may be bent and deformed if it is not inserted by pressing evenly against both sides, so that it cannot be reliably connected. There was a problem that required a solution such as being not easy to apply to the mounting type.

  Therefore, the present invention provides a connector for a cold cathode tube that can solve these problems of the prior art, and in particular, it is easy to install the cold cathode tube and the electrode wire, and the electrode wire is short or uneven. Can be connected securely, insertion force is not required and can be connected easily without bending deformation, the connector can be downsized, the connection can be made securely while visually checking the internal connection status, PCB mounting type and lead wire type The main purpose is to be easily applicable to both.

  A connector for a cold cathode tube according to the present invention includes a housing having a connection terminal connected to a wiring on the power supply side and a cover that is detachably attached to the housing, and the housing is provided with an end portion of the cold cathode tube. A holding chamber for storing and holding, and a connecting chamber for storing connection terminals in which contacts are arranged on the extended line of the cold cathode tube are formed on an adjacent plate, and a press-contact portion that is separated from the contact is formed on the tip side. When each of the movable pieces is provided and the end of the cold cathode tube is mounted in the holding chamber, the electrode wire can be freely inserted between the movable pieces, and the cover protrudes in a left-right opposed manner. Protrusions were provided, and when they were attached to the opening of the housing, each movable piece of the contact was pressed from the outside, and the electrode wire was pinched by the pressure contact portion to be in pressure contact. (Claim 1)

  2. The cold cathode tube connector according to claim 1, wherein the end portion of the cold cathode tube can be elastically supported by the housing via a cushion material attached to the holding chamber side or the cold cathode tube side. (Claim 2)

  The cold cathode tube connector according to claim 1 or 2, wherein the housing is provided with a part of the connection chamber for accommodating the holding chamber and the contact exposed to the opening side closed by the cover, and in the connection chamber. Accommodates the contact of the connection terminal provided with the terminal leg piece to be connected to the printed circuit board in an arrangement in which each movable piece can be seen in plan view from the opening side, and when the cold cathode tube is pushed down from the opening side, the end is placed in the holding chamber. It is possible to adopt a configuration in which the electrode wire can be inserted between the movable pieces of the contact and is applied to a board mounting type in which the insertion state of the electrode wire with respect to each movable piece can be visually confirmed from the opening side. (Claim 3)

  The cold cathode tube connector according to claim 1 or 2, wherein the housing includes a holding chamber that opens at one end side where the cold cathode tube extends and a connection chamber that is exposed at the opening side that is closed when the cover is attached. Provided in an orthogonal shape, the connection chamber accommodates connection terminals with contacts orthogonal to the wire connection piece to which the lead wire is connected, and the contacts are placed with the pressure contact part of each movable piece facing the holding chamber. In addition, the connection chamber is provided with a notch-shaped window hole at a position where each movable piece can be viewed in plan, the cold cathode tube is inserted from the opening on one end side, the end is mounted in the holding chamber, and the electrode wire is connected It is possible to adopt a configuration that can be inserted between the movable pieces of the contact and is applied to a lead wire type in which the insertion state of the electrode wire with respect to each movable piece can be visually confirmed from the window hole. (Claim 4)

  In the cold cathode tube connector according to claim 1, when the cover is attached to the opening of the housing, each operating projection provided on the cover presses each movable piece of the contact from the outside, and loosely fits between each movable piece. A structure is adopted in which the inserted electrode wire is clamped by the pressure contact portion, and the pressure contact portion can be provided at a position adjacent to the end of the cold cathode tube, and the cover extends to the opening of the housing. It can be applied simply by pressing horizontally.

  Therefore, the electrode wire for mounting the end portion of the cold cathode tube to the housing does not require an insertion force with respect to the contact, so that it can be securely mounted without being bent and deformed. By providing the part adjacent to the end of the cold-cathode tube, the electrode wire can be securely connected even if the length of the electrode wire is short or uneven, and the electrode can be easily and reliably connected by a simple operation of pressing the cover. In addition to being able to press-contact the wires, it is possible to expect effects such as not requiring a large space for mounting the cover and miniaturizing the entire connector.

  According to the cold cathode tube connector of the second aspect, it is easy to mount the cushion material, and the cold cathode tube can be safely locked and held by the cushion material.

  In the cold cathode tube connector according to claim 3, by providing a part of the holding chamber and the connection chamber so as to be exposed to the opening side, when the cold cathode tube is pushed down from the opening side, the end is mounted in the holding chamber, and Since the electrode wire can be inserted between each movable piece of the contact, the cold cathode tube can be easily and reliably attached to the housing, and the insertion state of the electrode wire can be easily visually confirmed through the opening. With this, the cover can be attached.

  In the cold cathode tube connector according to claim 4, the cold cathode tube is inserted from the opening on one end side, the end portion is mounted in the holding chamber, and the electrode wire can be inserted between the movable pieces of the contact. The tube can be easily and reliably attached, and the cover can be attached while the insertion state of the electrode wire is easily visually confirmed through the window hole.

  The cold cathode tube connector of the present invention will be described in detail with reference to the accompanying drawings showing preferred embodiments to which the present invention is applied. FIGS. 1 to 6 are applied to a board mounting type in which connection terminals are connected to a printed circuit board. 7 to 8 show a modification of the first embodiment applied to a substrate mounting type, and FIGS. 9 to 13 show a first embodiment applied to a lead wire type in which connection terminals are connected to lead wires. FIG. 14 to FIG. 16 show a modification of the second embodiment applied to the lead wire type.

  Referring to the first embodiment, FIG. 1 is a perspective view of a cold cathode tube connector 1 mounted on a substrate before the cover is mounted, FIG. 2 is a state where the cover is mounted, and FIG. b) is a side view, FIG. 3 is a perspective view of a built-in connection terminal, FIG. 4 is a cross-sectional view of FIG. 2, (a) is a cross-sectional view along line II, and (b) is II. FIG. 5 is a cross-sectional view taken along line II-II, FIG. 5 is a cross-sectional view taken along line III-III, FIG. 5A is a cross-sectional view taken along line III-III, and FIG. FIG. 6 shows a plan view before the cover is mounted.

  The cold cathode tube connector 1 includes a housing 2 and a cover 3 which are resin-molded in a rectangular box shape with one side open, and a connector case is formed by detachably fitting the cold cathode tube 5 in the housing 2. A connection terminal 4 for connecting the electrode wire 6 and the power supply side is provided, mounted on a printed circuit board 7 provided with wiring for supplying power, and configured to hold an end portion of the cold cathode tube 5. By attaching the cover 3 to the contact 2, the contact 8 of the connection terminal 4 is held in pressure contact with the electrode wire 6 sandwiched therebetween.

  The connector case is provided with a partition plate 9 in which a Y-shaped cutout groove 9 a is formed in the housing 2, and a cushioning material 10 using silicon rubber or the like is accommodated in a holding chamber formed on one side of the cold cathode tube 5. The connection terminal 4 connected to the electrode wire 6 protruding from the end portion of the cold cathode tube 5 through the notch groove 9a is mounted in the connection chamber provided on the other side, while elastically holding the end portion of the housing. A wedge-shaped locking receiving piece 11 for detachably locking the cover 3 is provided on the outer surfaces of both sides, and is integrally formed of a synthetic resin material.

  In addition, the cover 3 is formed in a box shape that is fitted and attached so as to surround the outer wall of the housing 2, and each operating protrusion 12 that protrudes in a left-right-facing manner by forming the inner surface on the tip side into a tapered surface 12 a. , 12 are provided on the inner bottom surface on the side to be attached to the connection chamber, and a guide plate 13 is provided between the operation projections 12, 12, and the operation projection 12 and the guide plate 13 are attached to the partition plate 9. A notch groove 14 for escaping the cold-cathode tube 5 is provided on the wall surface on the holding chamber side, and hook-like engagements that are engaged with the engagement receiving pieces 11 of the housing 2 are provided on both inner surfaces of the cover 3. A stop piece 15 is provided and is integrally formed of a synthetic resin material.

  The connection terminal 4 includes a connection plate 16 provided with stabilizing plates 16b on both sides of a fixing portion 16a that is fitted in the housing 2 in a press-fit state, and a terminal leg piece that is suspended from the connection plate 16 and connected to the printed circuit board 7 by soldering. 17 and the contact 8 erected on the connection plate 16 are integrally formed of a thin metal plate having a spring property, and the contact 8 is a movable piece 19, 19, the movable piece 19 is bent inward to form a tapered guide piece 19 a, and a pressure contact portion 19 b bent inward is formed on the distal end side of the movable piece 19, but between the pressure contact portions 19 b The electrode wires 6 are separated so that they can be loosely fitted.

  In the cold cathode tube connector 1 having the above configuration, the housing 2 in which the connection terminals 4 are mounted in the connection chamber is mounted on the printed circuit board 7 via the terminal leg pieces 17, and the end of the cold cathode tube 5 is mounted in the holding chamber. The electrode wire 6 protruding from the end is pressed into and held in the cushion material 10, and the base side is inserted into the notch groove 9 a of the partition plate 9, and the tip side is loose between the press contact parts 19 b of the contact 8. The cover 3 is attached to the housing 2 from above after the fitting is performed and the attached state of the pressure contact portion 19b and the electrode wire 6 is visually confirmed from above the connection chamber.

  When the cover 3 is attached, the tapered surface 12a formed on the inner side of the tip of the operating projection 12 hits the tapered guide piece 19a formed on the contact 8, and is inserted while bending each movable piece 19 inward. Since the projection 12 is housed in the connection chamber with the outer side being supported by the inner wall surface, the electrode wire 6 is held in a pressure contact state by the respective pressure contact portions 19b on the distal end side, and the electrode wire 6 is connected to the connection terminal 4. In addition to being able to be connected, the connecting piece 15 can be held and locked to the locking receiving piece 11 by a locking piece 15 provided as a locking holding means on the housing 2 and the cover 3.

  Next, a modification of the first embodiment will be described with reference to FIGS. 7 to 8. FIG. 7 shows a perspective view of a cold cathode tube connector 1A mounted on a substrate before the cover is mounted, as in FIG. FIG. 5 is a cross-sectional view similar to FIG. 4, where (a) is a longitudinal cross-sectional view and (b) is a cross-sectional view, but this modification is a cushion that was previously mounted on the housing 2 side in the first embodiment. In this embodiment, instead of the material 10, it is applied in advance to the end of the cold cathode tube 5, and the other structures are the same as those in the first embodiment. Is omitted.

  The cold cathode tube connector 1A includes a housing 2A and a cover 3A that form a connector case. The housing 2 is provided with a connection terminal 4 for connecting the electrode wire 6 of the cold cathode tube 5 to the power supply side, and wiring for supplying power is provided. It is configured to be mounted on the printed circuit board 7 and to hold the end portion of the cold cathode tube 5, and by attaching the cover 3 </ b> A to the housing 2 </ b> A, the contact 8 of the connection terminal 4 is connected to the electrode wire 6. Is held in pressure contact.

  In the first embodiment, in order to mount the cushion material 10 in the holding chamber of the housing 2A, the housing 2 is held with the holding chamber side formed in a lip groove shape. In order to attach the cylindrical cushion material 20 provided with a split groove at the end of the housing, the holding chamber side of the housing 2A is formed in a U-shaped groove shape, and a pressing projection 21 for the cushion material 20 is formed on the cover 3A. The other structures of the housing 2A and the cover 3A are the same as those in the first embodiment.

  The cold cathode tube connector 1A according to the modified example having the above-described configuration is held by press-fitting the end portion of the cold cathode tube 5 in which the cylindrical cushion material 20 is previously applied to the outer periphery of the holding chamber of the housing 2A from above. At the same time, the electrode wire 6 protruding from the end portion is inserted into the notch groove 9a of the partition plate 9 on the base side, and the tip end side is loosely fitted between the press contact portions 19b of the contact 8, and the press contact portion 19b and the electrode wire 6 are inserted. After visually confirming the mounting state from above the connection chamber, the cover 3A is attached to the housing 2A from above.

  Compared to the cold cathode tube connector 1 according to the first embodiment, the cold cathode tube connector 1A according to this modification is not provided with the cushion material 20 on the housing 2A side, so the structure of the housing 2A is simplified and molded. While it is possible to reduce the cost of the metal mold and eliminate the need for a facility for incorporating the cushioning material 20, the work of attaching the cushioning material 20 to the outer periphery of the end of the cold cathode tube 5 is performed. There are difficulties such as being necessary.

  Next, a second embodiment applied to the lead wire type in which the connection terminal is connected to the lead wire will be described. FIG. 9 is a perspective view of the cold cathode tube connector 22 attached to the lead wire before the cover is attached. 10 is a plan view, FIG. 11 is a perspective view of the cover 24, FIG. 12 is a perspective view of the connection terminal 26 to which the lead wire 25 is connected in advance, and FIG. ) Is a longitudinal sectional view, and (b) is a transverse sectional view.

  As in the case of the first embodiment, the cold cathode tube connector 22 includes a housing 23 and a cover 24 that is detachably attached to the housing 23, and an electrode of the cold cathode tube 5 is provided in the housing 23. A connection terminal 26 for connecting the wire 6 and the power supply side wiring is provided. A lead wire 25 for supplying power is connected to the connection terminal 26 and the end of the cold cathode tube 5 is held by the connector case. When the cover 24 is attached to the housing 23, the contact 27 of the connection terminal 26 holds the electrode wire 6 and presses it.

  The connector case is a resin having a rectangular box shape in which a housing 23 holds an end portion of the cold cathode tube 5 and a connection chamber in which the connection terminals 26 are mounted are arranged in an L shape in an orthogonal shape and one side is opened. A partition plate 28 is provided between the holding chamber and the connection chamber in the same manner as in the first embodiment, and a tapered insertion hole 28a through which the electrode wire 6 is inserted is formed in the partition plate 28. In the holding chamber, the cushion material 29 is accommodated, and the connection terminal 26 with the lead wire 25 is mounted in the connection chamber in such a manner that the contact 27 is disposed on the extended line of the cold cathode tube 5.

  Further, the housing 23 is provided with a window hole portion 30 for visually confirming the connection state of the electrode wire 6 with respect to the contact 27 of the connection chamber, and a U-shaped cutout portion 31 for drawing out the lead wire 25 on both side walls of the connection chamber. A pressing plate 32 for the contact 27 is provided in the middle portion of the chamber, and the latch receiving piece 33 for detachably latching and holding the cover 24, and the latch receiving piece 33 is guided and protected. Guide receiving pieces 34 are provided on both side walls of the holding chamber.

  The cover 24 integrally forms a U-shaped connection side wall surface 35 that can close the opening of the connection chamber and a flat holding wall surface 36 that can close the opening of the holding chamber. The projecting sandwiching plate 36a and the projecting sandwiching plate 35a projecting from the connecting side wall surface 35 are formed in parallel, and a locking piece 37 is provided between each projecting portion 36a and the projecting portion 35a to connect the connecting sidewall surface. 35 is provided with a plurality of operating projections 38, 38 on the inner wall surface, the tip side being formed as a tapered surface 38a and projecting left and right.

  The connection terminal 26 includes a connection plate 39 formed in a U-shape to be attached to the housing 23, a wire connection piece 40 that connects the lead wire 25 to the connection plate 39, and a contact 27 that connects the electrode wire 6 to the connection plate 39. The contact 27 is formed integrally with a springy metal thin plate, and the contact 27 includes movable pieces 41 and 41 in which the distal end side of the wire connecting piece 40 is bent into a U-shape, and the distal end side of the movable piece 41 is bent inward. The pressure contact portions 41a are formed, and the electrode wires 6 are separated so that the electrode wires 6 can be loosely fitted between the pressure contact portions 41a, and the connection plate 39 has an insertion hole 39a through which the electrode wires 6 are inserted, and the pressure contact portions. A window hole 39b for visually confirming 41a from the outside is provided.

  The cold cathode tube connector 22 having the above configuration has the connection terminal 26 with the lead wire 25 mounted in the connection chamber of the housing 23 and presses the end of the cold cathode tube 5 into the cushion material 29 in the holding chamber from the horizontal direction. Are held between the movable pieces 41 and 41 of the contact 27 through the insertion holes 28a of the partition plate 28, so that the pressure contact portions 41a of the movable pieces 41 and 41 are inserted. After visually confirming the mounting state of the electrode wire 6 with respect to the upper side of the connection chamber, the cover 24 is attached to the housing 23 from the upper side.

  When the cover 24 is attached, the tapered surface 38a formed on the distal end side of the operation projection 38 abuts against each movable piece 41, 41 formed on the contact 8, and the operation projection 38 while bending each movable piece 41 inward. Is housed in the connection chamber, the electrode wire 6 can be held in a pressure contact state by the pressure contact portions 41a, 41a on the distal end side, and the electrode wire 6 can be connected to the connection terminal 26. A locking piece 37 provided as a locking holding means on the cover 23 and the cover 24 can be locked and held on the locking receiving piece 33.

  Next, a modified example of the second embodiment will be described with reference to FIGS. 14 to 16. FIG. 14 is a perspective view of the connection terminal 26 to which the lead wire 25 is connected in advance as in FIG. 12, and FIG. Similarly, (a) is a longitudinal sectional view and (b) is a transverse sectional view in the state of the cover being mounted, and FIG. 16 is a view of the cold cathode tube connector 22A before mounting the cover connected to the lead wire as in FIG. Although the side view is shown, this modification is an embodiment in which the mounting state of the electrode wire 6 is visually confirmed from above the connection chamber in the second embodiment, whereas the second embodiment can be visually confirmed from both the left and right sides. Components similar to those in the embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As in the case of the second embodiment, the cold cathode tube connector 22A comprises a housing 23A and a cover 24A that is detachably attached to the housing 23A, and an electrode of the cold cathode tube 5 is provided in the housing 23A. A connection terminal 26A for connecting the wire 6 and the power supply side is provided. A lead wire 25 for supplying power is connected to the connection terminal 26A, and the end of the cold cathode tube 5 is held by a connector case. When the cover 24A is attached to 23A, the contact 27A of the connection terminal 26A holds the electrode wire 6 in pressure contact.

  In this modification, the connection terminal 26A with the lead wire 25 is used so that the mounting state of the electrode wire 6 can be visually confirmed from both the left and right sides of the housing 23A, but the connection terminal 26A is attached to the housing 23A. A connection plate 42 formed in a U-shape to be mounted, a wire connection piece 43 for connecting the lead wire 25 to the connection plate 42, and a contact 27A for connecting the electrode wire 6 to the connection plate 42 are spring-like thin metal plates. It is integrally formed.

  The contact 27A includes movable pieces 44, 44 obtained by bending the wire connection piece 43 into a U-shape, and a pressure contact portion 44a bent inward is formed on the tip side of the movable piece 44. 44a is spaced apart so that the electrode wire 6 can be loosely fitted, and the connection plate 42 has an insertion hole 42a through which the electrode wire 6 is inserted into the pressure contact portion 44a, and a window hole portion 42b for visually confirming the pressure contact portion 44a from the outside. , 42b are provided.

  In the housing 23A, a cushion material 29 is attached to a holding chamber provided on one side of the partition plate 28 to hold the end of the cold cathode tube 5, and the contact 27A of the connection terminal 26A is provided to the connection chamber provided on the other side. The structure in which the electrode wire 6 is inserted and inserted between the pressure contact portions 44a, 44a of the movable pieces 44 through the insertion holes 28a is the same as in the second embodiment. In this modification, the locking receiving pieces 37 provided on both side surfaces are provided on the upper surface side in the drawing and the lower surface side is omitted, and the insertion state of the electrode wire 6 is viewed from both sides through the window hole portions 42b and 42b. A notch-like monitoring window 45 is provided for visual confirmation.

  As in the case of the second embodiment, the cover 24A projects the operating protrusions 38, 38 from the connection side wall surface 36 that closes the opening of the connection chamber, and the movable pieces 44, 44 of the contact 27A when attached. The electrode wire 6 is sandwiched between the pressure contact portions 44a by pressing the electrode wire 6 to be in pressure contact. However, the contact 27A is held by the locking piece 33 and connected to the electrode wire 6 by the pressure contact state. The latch receiving piece 37 to be maintained is provided on the upper surface side in the drawing in this modification.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a cold cathode tube connector according to a first embodiment to which the present invention is applied, which is a board mounting type in which connection terminals are connected to a printed circuit board and is mounted on the board before the cover is mounted. FIG. 1 shows a state where a cover is mounted, where (a) shows a plan view and (b) shows a side view. The perspective view of the connecting terminal built in the connector for cold cathode tubes of FIG. 1 is shown. 3A is a cross-sectional view taken along the line II, and FIG. 2B is a cross-sectional view taken along the line II-II. 3A is a cross-sectional view taken along line III-III, and FIG. 3B is a cross-sectional view taken along line IV-IV. The top view before the cover mounting | wearing of the connector for cold cathode tube by 1st Embodiment is shown. FIG. 6 is a perspective view of a cold cathode tube connector that is a modification of the first embodiment and is mounted on a substrate before the cover is mounted, as in FIG. 1. It is sectional drawing similar to FIG. 4, Comprising: (a) is a longitudinal cross-sectional view, (b) shows a cross-sectional view. FIG. 5 is a perspective view of a cold cathode tube connector before mounting a cover, which is a second embodiment to which the present invention is applied and is a lead wire type in which a connection terminal is connected to a lead wire and is connected to the lead wire. FIG. 10 is a plan view of FIG. 9. FIG. 9 shows a perspective view of the cover to be attached. FIG. 10 is a perspective view of a connection terminal with a lead wire built in the cold cathode tube connector of FIG. 9. FIG. 9 is a cross-sectional view of the state where the cover is mounted, where (a) is a vertical cross-sectional view and (b) is a cross-sectional view. It is a modification of 2nd Embodiment, Comprising: The perspective view of the connecting terminal with a lead wire incorporated in the connector for cold cathode tubes is shown. It is sectional drawing of the state which mounted | wore the cover like FIG. 13, (a) is a longitudinal cross-sectional view, (b) shows a cross-sectional view. The side view before cover attachment is shown like FIG.

Explanation of symbols

1, 1A, 22, 22A Cold cathode tube connector 2, 2A, 23, 23A Housing 3, 3A, 24, 24A Cover 4, 26 Connection terminal 5 Cold cathode tube 6 Electrode wire 7 Printed circuit board 8, 27 Contact 9, 28 Partition Plate 9a Notch groove 28a Insertion hole 10, 20, 29 Cushion material 11, 33 Locking receiving piece 12, 38 Actuation protrusion 12a, 38a Tapered surface 13 Guide plate 14 Notch groove 15, 37 Locking piece 16, 39, 42 Connection Plate 39a Insertion hole 39b Window hole 17 Terminal leg piece 18 Standing piece 19, 41, 44 Movable piece 19a Guide piece 19b, 41a, 44a Pressure contact portion 21 Holding protrusion 25 Lead wire 30 Window hole portion 31 Notch portion 32 Holding plate 34 Guide Receiving piece 35 Connection side wall surface 35a Holding plate 36 Holding side wall surface 36a Overhang portions 40, 43 Electric wire connection piece 45 Monitoring window

Claims (4)

  A connector case is formed of a housing equipped with a connection terminal to be connected to the wiring on the power supply side, and a cover that is detachably attached to the housing, and the housing holds and holds the end of the cold cathode tube, A connection chamber for accommodating a connection terminal in which a contact is arranged on the extended line of the cold cathode tube is formed, and each contact is provided with left and right movable pieces each having a press-contact portion that is separated from the distal end side. If the electrode wire is mounted in the holding chamber, the electrode wire can be inserted freely between the movable pieces, and the cover is provided with operating protrusions protruding in the left-right direction so as to adhere to the opening of the housing. A connector for a cold cathode tube, wherein each movable piece of the contact is pressed from the outside, and the electrode wire is sandwiched and pressed by the press contact portion.   2. The cold cathode tube connector according to claim 1, wherein an end portion of the cold cathode tube is elastically supported by the housing via a cushion material attached to the holding chamber side or the cold cathode tube side.   The housing is provided with a part of the holding chamber and a connection chamber for accommodating the contact exposed at the opening side closed by the cover, and a terminal leg piece for connecting to the printed circuit board is provided in the connection chamber. The contact of the connected terminal is accommodated so that each movable piece can be seen in plan view from the opening side, and when the cold cathode tube is pushed down from the opening side, the end is mounted in the holding chamber and the electrode wire is connected to each movable contact. 3. The cold cathode tube connector according to claim 1 or 2, wherein the connector is configured to be inserted between the pieces, and applied to a substrate mounting type in which the insertion state of the electrode wire with respect to each movable piece can be visually confirmed from the opening side.   The housing is provided with a holding chamber that opens at one end where the cold cathode tube extends and a connection chamber that is exposed at the opening that is closed when the cover is attached. The connection terminals with the contacts orthogonal to the wire connection pieces connected to each other are accommodated, and the contacts are arranged with the pressure contact portion of each movable piece facing the holding chamber, and each movable piece is placed in the connection chamber. A notched window hole is provided at a position where it can be seen in plan view, a cold cathode tube is inserted from the opening on one end side, the end is mounted in the holding chamber, and an electrode wire can be inserted between each movable piece of contact. 3. The cold cathode tube connector according to claim 1, wherein the connector is applied to a lead wire type in which an insertion state of the electrode wire to each movable piece can be visually confirmed from the window hole.

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