KR100887477B1 - Electrical connector and liquid crystal display device - Google Patents

Abstract

The electrical connector 6 has a contact 15; 15A; 15B held by the housing 14, and an operation member 16: 16A for manipulating the contacts 15; 15A; 15B. The housing 14 comprises an insertion recess 20 into which the axial terminals 10 (10A) are inserted along the first direction D1. A pair of elastic piece portions 30, 31; 30A, 31A; 30B, 31B of the contacts 15; 15A; 15B connect the terminals 10; 10A with the first direction D1. The clamping part 40 for clamping in the predetermined clamping direction D3 orthogonal is included, respectively. The first direction is along the radial direction of the terminals 10 (10A). The operation member 16; 16A is an extension operation unit 48; 48A for widening the gap between the clamping portions 40 of the pair of elastic piece portions 30, 31; 30A, 31A; 30B, 31B. ).

Description

ELECTRICAL CONNECTOR AND LIQUID CRYSTAL DISPLAY DEVICE}

BRIEF DESCRIPTION OF THE DRAWINGS It is typical sectional drawing which shows schematic structure of the liquid crystal display device provided with the electrical connector which concerns on one Embodiment of this invention.

Figure 2 is an exploded perspective view of the main part of Figure 1;

3 is a perspective view of an electrical connector;

4 is a perspective view of a housing of an electrical connector;

5 is a perspective view of a contact.

6 is a plan view of the contact viewed in a second direction;

FIG. 7 is a cross sectional view along line VII-VII of FIG. 6; FIG.

8 is a cross-sectional view of an essential part taken along the line VIII-VIII in FIG. 2, showing a state in which contacts are expanded.

 9 is a cross-sectional view of an essential part taken along the line VIII-VIII in FIG. 2, showing a state in which the expansion of the contact is released.

10 is a cross-sectional view taken along the line X-X of FIG.

FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 9;

12 is a perspective view of the operation member.

It is a perspective view of the principal part of other embodiment of this invention.

It is a perspective view of the principal part of further another embodiment of this invention.

Fig. 15 is a sectional view of an essential part of still another embodiment of the present invention.

Fig. 16 is a sectional view of an essential part of still another embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector mounted on a fluorescent tube or the like for backlight of a liquid crystal display device, and a liquid crystal display device having the same.

For example, the following documents 1 and 2 are proposed as a connection structure of terminals of fluorescent tubes, such as a cold cathode tube (CCFL: Cold Cathode Fluorescent Lamp) used as a backlight of a liquid crystal display television or a monitor.

Document 1: Japanese Patent Laid-Open No. 2001-250605 (published date: September 14, 2001)

Document 2: Japanese Patent Laid-Open No. 2004-259645 (published date: September 16, 2004)

In Documents 1 and 2, a connection fitting fixed to one end of an electric wire is soldered to a terminal (electrode) of a cold cathode tube. The other end of the wire is connected to the inverter circuit via a connector. Power from the inverter circuit is supplied to the cold cathode tube through the connector and the electric wire.

However, in the above-mentioned documents 1 and 2, due to solder defects, there is a fear that conduction defects may occur between the terminal and the connection fitting. In addition, the soldering work requires labor. In particular, since the cold cathode tube has a thin shape having a diameter of about several millimeters and has a thinner shape when it reaches a terminal, careful handling is necessary. For this reason, a large amount of labor is required for soldering work.

The same problem exists not only in a cold cathode tube, but also when using another fluorescent tube, such as an external electrode fluorescent tube (EEFL), or what has an axial terminal other than a fluorescent tube.

An object of the present invention is to provide an electrical connector capable of reliably and easily connecting an axial terminal and a liquid crystal display device having the same.

An electrical connector of a preferred form of the present invention includes an insulating housing, a contact held by the housing, and an operation member for operating the contact. The housing includes an insertion recess in which an axial terminal is inserted along a predetermined insertion direction. The contact includes a pair of elastic pieces facing each other. At least a part of the pair of elastic pieces is exposed to the insertion recess. The pair of elastic piece portions each include a clamping portion for clamping the terminal in a predetermined clamping direction orthogonal to the predetermined inserting direction. The predetermined insertion direction is along a first radial direction of the terminal, and the predetermined clamping direction is along a second radial direction of the terminal. The operation member includes an expansion operation portion for widening the gap between the sandwich portions of the pair of elastic pieces.

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According to this aspect, the terminal can be easily inserted along the radial direction between the clamping parts in the state which the space | interval between the clamping parts of a pair of elastic piece part of a contact was expanded by the expansion operation part of an operation member. Then, by releasing the expansion by the expansion operation unit, the terminal is elastically held between the holding portions. As a result, a predetermined contact pressure is generated between the contact and the terminal, and as a result, the electrical connection between the contact and the terminal can be reliably performed.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS It is typical sectional drawing which shows schematic structure of the liquid crystal display device provided with the electrical connector which concerns on one Embodiment of this invention. With reference to FIG. 1, the liquid crystal display device 1 is used as a monitor of a television or a personal computer, for example.

The liquid crystal display device 1 includes a casing 2, a liquid crystal panel 3, a circuit board 4 disposed behind the liquid crystal panel 3, and a cold cathode tube as a plurality of fluorescent tubes. (5), electrical connector 6 (hereinafter simply referred to as connector) and inverter circuit 7 are provided.

The liquid crystal panel 3 is a non-light emitting display panel, and is mounted in an opening in the front of the casing 2. The surface 3a of the liquid crystal panel 3 faces the front of the casing 2, and the back surface 3b faces the rear of the casing 2.

The circuit board 4 is a plate-shaped member which is disposed substantially parallel to the liquid crystal panel 3 and fixed to the casing 2, and has a first surface 4a facing the rear surface 3b of the liquid crystal panel 3. And the second surface 4b on the side opposite to the first surface 4a.

The cold cathode tube 5 is a backlight of the liquid crystal panel 3 and is disposed between the back surface 3b of the liquid crystal panel 3 and the first surface 4a of the circuit board 4. The number of cold cathode tubes 5 is, for example, two per inch of the size of the liquid crystal panel 3.

As shown in FIG. 2, the longitudinal direction L of each cold cathode tube 5 is along the direction X (corresponding to the left and right direction of the casing 2: the direction perpendicular to the ground in FIG. 1). With reference to FIG. 1, each cold cathode tube 5 is arrange | positioned at predetermined intervals along the direction Y (corresponding to the up-down direction of the casing 2). Each cold cathode tube 5 is parallel to the back surface 3b of the liquid crystal panel 3. Each cold cathode tube 5 and the liquid crystal panel 3 are separated by a predetermined distance in the direction Z (corresponding to the front-back direction of the casing 2). Each cold cathode tube 5 irradiates the liquid crystal panel 3 with light from the rear side.

The electrical connector 6 is for achieving electrical connection between the cold cathode tube 5 and the circuit board 4 (the inverter circuit 7 further). This connector 6 is attached to each of a pair of ends of each cathode tube 5 between the back surface 3b of the liquid crystal panel 3 and the first surface 4a of the circuit board 4. have. Each connector 6 is attached to the circuit board 4.

The inverter circuit 7 functions to supply driving power to the cold cathode tube 5, and is mounted on the second surface 4b of the circuit board 4. The inverter circuit 7 and each cold cathode tube 5 are electrically connected through the circuit board 4 and the corresponding connector 6.

2 is an exploded perspective view of the main part of FIG. 3 is a perspective view of the connector 6.

In addition, since the mounting structure regarding each cold cathode tube 5 is the same, the mounting structure of one cold cathode tube 5 is mainly demonstrated below.

Referring to FIG. 2, the cold cathode tube 5 includes a pair of tubular body portions 8 extending straight along the direction X and a pair of end portions 9 and 9 of the body portion 8, respectively. Outer leads 10 and 10 (electrodes) as terminals are included. The outer lead 10 as each terminal protrudes along the longitudinal direction L from the corresponding edge part 9 of the main-body part 8.

The main body 8 is, for example, a glass member having a diameter of several mm to several tens of mm. The pair of outer leads 10 and 10 are axially conductive members made of metal such as soft iron, and are respectively exposed in the direction X from the corresponding ends 9. The diameter of the outer lead 10 is, for example, about 1 mm and the length is about several mm.

A clamp member 11 is provided for holding the cold cathode tube 5 to support the self-weight of the cold cathode tube 5. One or more (one in this embodiment) clamp members 11 are provided for each cold cathode tube 5. The number of clamp members 11 can be suitably determined according to the length of the cold cathode tube 5. The clamp member 11 is disposed in the middle of the body portion 8 of the cold cathode tube 5 with respect to the direction X.

This clamp member 11 is a synthetic resin molded article, for example, and includes a support 12 and an arc-shaped holding part 13. The support 12 is fixed to the first surface 4a of the circuit board 4 and extends in the direction Z. As shown in FIG. The holding part 13 holds the said intermediate part of the main-body part 8 of the cold cathode tube 5, restricting the movement to the radial direction (direction Y and direction Z in FIG. 2) of the cold cathode tube 5. In FIG.

This holding part 13 forms the arc shape which can surround the one part longer than half of the circumferential direction of the main-body part 8 of the cold cathode tube 5. As shown in FIG. An opening 13a for inserting the main body 8 of the cold cathode tube 5 is formed in a part of the circumferential direction of the holding portion 13.

The intermediate part of the longitudinal direction L of the main-body part 8 of the cold cathode tube 5 is inserted and hold | maintained in the opening part 13a along the 1st direction D1 which is the mounting direction of the cold cathode tube 5 to the connector 6. . The opening 13a is opened in the second direction D2 (corresponding to the direction in which the cold cathode tube 5 is removed from the connector 6) which is the direction opposite to the first direction D1.

The connector 6 is provided in each of the pair of ends 9 and 9 of the main body 8 of the cold cathode tube 5 as described above. Since the structure of each connector 6 is the same, one connector 6 is mainly demonstrated below.

Referring to Fig. 3, the connector 6 has a length of each of the directions X, Y, and Z about 10 to 15 mm, the housing 14, the contacts 15 held by the housing 14, and The operation member 16 for operating the contact 15 is included.

4 is a perspective view of the housing 14. 2 and 4, the housing 14 is an integrally molded article made of synthetic resin, and has a seating portion extending from the main body 17 and the main body 17. (18).

The main body 17 has a box shape. Through-holes are formed in the circuit board 4 where the connector 6 is arranged, and the main body 17 inserts the through-holes to form the first surface 4a. It protrudes toward the back surface 3b (refer FIG. 1) of the liquid crystal panel 3 from the side.

2 and 4 again, an introduction groove 19 is formed at the end of the main body 17 in the second direction D2 in a cross-sectional U shape or a cross-sectional groove shape. A corresponding end 9 of the cold cathode tube 5 is introduced into the introduction groove 19. The end 9 of the cold cathode tube 5 introduced into the introduction groove 19 is protected in a state surrounded by the inner surface of the introduction groove 19.

 Moreover, the insertion recessed part 20 is provided in the edge part of the main-body part 17 which concerns on 2nd direction D2. In the insertion recess 20, the outer lead 10 as a terminal of the cold cathode tube 5 is inserted along the first direction D1 as the installation direction.

The insertion recess 20 is partitioned by the circumferential wall 21 and the bottom wall 22, forms a rectangular cross section, and functions as an import cavity for receiving the outer lead 10. . The circumferential wall 21 includes a pair of first side portions 23a and 23b facing each other in the direction X, and a pair of second side portions 24a and 24b facing each other in the direction Y.

One first side portion 23a is adjacent to the introduction groove 19 and divides between the introduction groove 19 and the insertion recess 20. In the first side portion 23a, a notch groove 25 is provided in the center portion in the direction Y. As shown in FIG. The notch groove 25 can pass through the corresponding outer lead 10.

Although not shown, the bottom of the cutout groove 25 functions as a stopper for preventing the positional difference of the outer lid 10. That is, when the outer lead 10 is inclined at a predetermined angle with respect to the housing 14, the outer lead 10 is received by the bottom of the cutout groove 25, and as a result, the outer lead 10 is not inclined any further. It is.

In addition, the whole of the cold cathode tube 5 (the main body part 8 and the outer lead 10) that the "outer lid 10 tilts with respect to the housing 14" is the housing 14 (circuit board 4). The main body 8 of the cold cathode tube 5 does not incline with respect to the housing 14 (parallel with respect to the circuit board 4), and the outer lead 10 with respect to the main body 8. Is to include at least one side.

The guide part 26 for guiding the operation member 16 along the 1st and 2nd direction D1 and D2 (direction Z) is provided in the other 1st side part 23b. This guide part 26 is a convex shape arrange | positioned at the inner side surface of the other 1st side part 23b, and is extended in the direction Z. As shown in FIG.

Through-holes 27 are formed in each of the pair of second side portions 24a and 24b. Each through hole 27 extends along the direction Z. As shown in FIG. The first and second convex portions 53 and 58 described later of the operation member 16 are inserted into the through hole 27.

The seat portion 18 is a pair of flange-shaped portions provided in the end portion 17a of the main body portion 17 in the first direction D1. The left part 18 is arrange | positioned in each of a pair of edge part of the main-body part 17 which concerns on the direction Y, and extends in the longitudinal direction X. As shown in FIG. Each seat 18 is abutted and accommodated on the second surface 4b of the circuit board 4. For this reason, positioning with respect to the direction Z of the housing 14 with respect to the circuit board 4 is carried out.

5 is a perspective view of the contact 15. 6 is a plan view of the connector 6 viewed along the second direction D2. FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6. FIG. 8 is a cross-sectional view of an essential part taken along the line VIII-VIII in FIG. 2, showing a state in which the contact 15 is expanded. FIG. 9 is a cross-sectional view of an essential part taken along the line VIII-VIII in FIG. 2, showing a state in which the extension of the contact 15 is released. 10 is a cross-sectional view taken along line X-X of FIG. 8. FIG. 11 is a cross-sectional view taken along the line XI-XI of FIG. 9.

2 and 5, the contact 15 is a metal or other conductive member. Specifically, the contact 15 is a sheet metal member. The contact 15 makes electrical connection with the outer lead 10 of the cold cathode tube 5. By the contact 15, electrical connection between the outer lead 10 and the circuit board 4 is achieved.

The contact 15 has a symmetrical shape in the direction Y, and has the main body 28, the lead 29, and a pair of mutually opposing elastic piece parts 30 and 31. As shown in FIG.

The main body 28 extends in the long direction which is the direction Z, and the cross section orthogonal to the direction Z has a U shape. A pair of portions in which the U-shape faces each other is a flange portion 32. The part of the main body 28 fitted to the flange portion 32 serves as the intermediate portion 33.

6 and 7, the main body 28 is press-fitted to the insertion hole 34 formed in the main body 17 of the housing 14. The insertion hole 34 extends in the direction Z over the insertion recess 20 from the end portion 17a in the second direction D2 of the main body portion 17 of the housing 14. The main body 28 of the contact 15 is surrounded by the peripheral surface of the insertion hole 34.

On the peripheral surface of the insertion hole 34, a pair of engagement grooves 35 and 35 for engaging each of the pair of flange portions 32 are formed. The engagement groove 35 extends in the direction Z, and the main body 28 of the contact 15 can be inserted along the engagement groove 35.

The main body 28 of the contact 15 is housed in one end of the first side portion 23a on one side of the main wall 21, and is positioned in the direction Z with respect to the housing 14. In addition, the main body 28 of the contact 15 may not be accommodated by the first side portion 23a on one side of the main wall 21 of the housing 14. In that case, the position of the contact Z in the direction Z is determined by the insertion amount of the main body 28 into the insertion hole 34.

5 and 7, the lead 29 contacts the second face 4b of the circuit board 4 to achieve electrical connection between the circuit board 4 and the contacts 15. As shown in FIG. This lead 29 is provided at one end of the main body 28 and extends from the main body 28 to one side in the direction X. As shown in FIG. The lead 29 and the second surface 4b of the circuit board 4 are parallel to each other, and both are in contact with each other.

The lead 29 is soldered to the circuit board 4 and is connected to the inverter circuit 7 via the circuit board 4. Moreover, the metal reinforcement member 70 provided in the edge part 17a of the 2nd direction D2 of the main-body part 17 of the housing 14 is being fixed to the 2nd surface 4b of the circuit board 4. .

With reference to FIGS. 2 and 8, the pair of elastic piece portions 30, 31 respectively achieve electrical connection with the corresponding outer lead 10. The pair of elastic piece parts 30 and 31 oppose each other in the direction Y. As shown in FIG. The pair of elastic piece portions 30 and 31 are respectively disposed on the second direction D2 side with respect to the corresponding flange portion 32, protrude into the insertion recess 20, and almost all of them are insertion recesses. (20). In addition, only a part of the pair of elastic pieces 30 and 31 may be exposed to the insertion recess 20.

These pairs of elastic piece portions 30 and 31 are respectively provided from the first piece portion 36 extending along the second direction D2 and the tip portion 36b of the corresponding first piece portion 36. A second piece 37 is formed that is folded back and extends along the first direction D1. With respect to the direction Y, the pair of first piece portions 36 are disposed relatively far from each other, and the pair of second piece portions 37 are disposed relatively close to each other.

Each first piece portion 36 extends along the second direction D2 from the leading end portion of the corresponding flange portion 32 in the second direction D2, and includes a bottom wall of the insertion recess 20 of the housing 14. 22). The pair of elastic piece parts 30 and 31 can elastically approach and space | separate each other by making the base end part 36a of each 1st piece part 36 into a point. In the free state (state in which no external force is acting on), each first piece portion 36 is arranged in parallel with each other. At the distal end portion 36b of each first piece portion 36, an engagement portion 42 for engaging with the expansion operation portion 48 described later is provided. Each engagement portion 42 is made up of a small piece that projects from the distal end portion 36b of the corresponding first piece portion 36 in one direction X.

2 and 5, each second piece portion 37 includes a folded back portion 38 lined with a tip portion 36b of the corresponding first piece portion 36, A linear gripping portion 40 for clamping the first narrowing portion 39 and the outer lead 10 in a predetermined clamping direction (corresponding to the radial direction of the outer lead 10); A second narrowing portion 41 and a tip portion 430 are included. The clamping portion 40 extends in a straight line along the first direction D1.

On one side (outer side) of the pair of foldback portions 38, guide portions 43 are provided for guiding the mounting of the outer lid 10, respectively (in Fig. 5, one guide portion ( 43) only shown). As the pair of guide portions 43 move toward the first direction D1, the distance between them is narrowed.

The pair of first narrowing portions 39 is for preventing the corresponding outer lead 10 from being inadvertently pulled out of the pair of clamping portions 40 in the second direction D2. These pairs of first narrowing portions 39 are provided at the tip of the pair of foldback portions 38 in the first direction D1. That is, the pair of clamping portions 40 are provided on the side opposite to the first direction D1.

The spacing between the pair of first narrowing portions 39 is narrower than the spacing between the pair of guide portions 43 and narrower than the spacing between the pair of clamping portions 40. When the pair of elastic piece portions 30 and 31 are close to each other, the interval between the pair of first narrowing portions 39 becomes narrower than the diameter of the outer lead 10.

The pair of clamping portions 40 achieve electrical connection between the corresponding out lead 10 and the contact 15, while the first and second directions D1 and D2 (direction Z) of the corresponding outer lead 10. This is to allow relative movement to). Each clamping part 40 is provided in the 1st direction D1 side with respect to the corresponding 1st narrowing part 39. As shown in FIG. Each clamping part 40 extends along the direction Z (1st direction D1) in a free state, and opposes in parallel.

Referring to FIG. 11, in each of the sandwiching portions 40, the contact portion with the outer lead 10 is formed on the back surface 3b of the liquid crystal panel 3 and the first surface 4a of the circuit board 4 (FIG. 1). And the contact portion 44 is formed. The pair of contact portions 44 oppose each other in the direction Y, and the outer lead 10 is elastically sandwiched in the radial direction between each other.

Referring again to FIGS. 2 and 5, the pair of second narrowing portions 41 indicate that the corresponding outer leads 10 are inadequately pulled out of the pair of clamping portions 40 in the first direction D1. It is to prevent. These pair of 2nd narrowing parts 41 are provided in the 1st direction D1 side with respect to a pair of clamping part 40. As shown in FIG.

The space | interval between these pair of 2nd narrowing parts 41 is narrower than the space | interval between a pair of clamping part 40. As shown in FIG. When the pair of elastic piece portions 30 and 31 are close to each other, the distance between the pair of second narrowing portions 41 becomes narrower than the diameter of the outer lead 10.

Each tip portion 430 is provided on the first direction D1 side with respect to the corresponding second narrowing portion 41. The tip portion 430 is pressed by the first piece portion 36 and is intended to narrow the gap between the pair of clamping portions 40. For this reason, the clamping force of the outer lead 10 by a pair of clamping part 40 can be increased. Moreover, the fall of the clamping force by the settling of the pair of elastic piece parts 30 and 31 can be prevented.

The pair of distal end portions 430 have an inverted V shape when viewed along the direction X, and the distance between them is widened as the first direction D1 is advanced. The bends bent in the direction closer to each other are provided at the distal end of each of the distal end portions 430 in the first direction D1, so that they can be smoothly engaged with the corresponding first piece portion 36.

2 and 8, the operation member 16 is for operating the clamping of the outer lead 10 by the pair of clamping portions 40, and for releasing the clamping, and inserting the housing 14. The recessed part 20 is inserted in the first and second directions D1 and D2 so as to be relatively movable. In FIG. 8, the operation member 16 in the extended position is shown, and in FIG. 9, the operation member 16 in the extended position is shown.

12 is a perspective view of the operation unit 16. 8 and 12, the operation member 16 is a resin molded article formed symmetrically with respect to the direction Y. FIG. The cross section orthogonal to the direction Z of the operation member 16 forms a groove shape.

The operation member 16 includes a pair of portions 45 and 46 facing each other at intervals in the direction Y, a connecting portion 47 connecting the pair of portions 45 and 46, and a connecting portion 47. It has a pair of extension operating part 48 provided in the.

The pair of portions 45 and 46 are arranged on both sides of the pair of elastic piece portions 30 and 31 in the insertion recess 20. One part 45 is arrange | positioned between one elastic piece part 30 and the other 2nd side part 24b of the main wall 21. As shown in FIG. The other part 46 is arrange | positioned between the other elastic piece part 31 and the one side 2nd side part 24a of the circumferential wall 21. As shown in FIG. The pair of portions 45 and 46 extend in the long direction in the direction Z, respectively.

As for the outer side surface 49 (only one outer side surface 49 is shown in FIG. 8 and FIG. 12) of the pair of parts 45 and 46, the front end of the 2nd direction D2 side is an insertion recessed part, respectively. It protrudes to the outer side of the direction Y with respect to the periphery 50 of the opening of 20, and this protruding part becomes the knob 51. As shown in FIG. An operator can hold the handle 51 to manipulate the operation member 16 in the first and second directions D1 and D2.

Of the pair of outer surfaces 49, the portion where the handle portion 51 is not provided is a straight portion 52 extending in the direction Z. As shown in FIG. Each straight portion 52 is provided with a first convex portion 53. These pair of 1st convex parts 53 are for preventing the operation member 16 from falling out from the insertion recessed part 20 improperly, and are at the front-end | tip of the 1st direction D1 of each linear part 52. It is arranged.

Each first convex portion 53 is inserted into a corresponding through hole 27 of the circumferential wall 21, and is accommodated in the periphery of the corresponding through hole 27, and the insertion concave of the operation member 16 is provided. The omission as the part 20 is prevented.

The front end of each 1st convex part 53 of the 1st direction D1 side is inclined shape. For this reason, when inserting the operation member 16 into the insertion recessed part 20, each 1st convex part, while this inclined shape engages smoothly with the peripheral edge 50 of the opening of the main wall 21, The 53 is inserted into the corresponding through hole 27.

8 and 9, the contacts 6 are provided with first and second holding mechanisms 55 and 56.

The first holding mechanism 55 holds the operation member 16 at the extended position shown in FIG. 8. Referring to FIGS. 8 and 12, the first holding mechanism 55 includes a pair of first recesses 54 and the circumferential wall 21 provided at each straight portion 52 of the operation member 16. It is provided in each of the 2nd side part 24, and includes the engagement part 5 which engages with the corresponding 1st recessed part 54. As shown in FIG.

The first concave portion 54 is partitioned between the first convex portion 53 and the second convex portion 58. The 2nd convex part 58 is provided in each linear part 52, and is lined along the corresponding 1st convex part 53 and the 2nd direction D2. The engagement part 57 includes the part arrange | positioned in the 2nd direction D2 side with respect to the through-hole 27 in each of the pair of 2nd side part 24 of the circumferential wall 21, FIG. Fitting is carried out to the 1st recessed part 54 in the extended position of the operation member 16 shown in FIG.

9 and 12, the second holding mechanism 56 holds the operation member 16 in the unlocking position shown in FIGS. 9 and 11. The second holding mechanism 56 is provided with a second concave portion 59 provided in each straight portion 52 of the operation member 16 and a pair of second side portions 24 of the main wall 21, respectively. And a latching portion 5 which engages with the corresponding second recessed portion 59. That is, the engagement part 57 constitutes a part of the first holding mechanism 55 and at the same time constitutes a part of the second holding mechanism 56.

The second concave portion 59 is partitioned between the second convex portion 58 and the stepped portion 60 facing the main wall 21 side among the handle portions 51. The engagement portion 57 is fitted to the second recessed portion 59 at the extension release position of the operation member 16 shown in FIG. 9.

The inner surfaces 61 of the pair of portions 45 and 46 face each other at predetermined intervals in the direction Y, and sandwich the pair of elastic piece portions 30 and 31 of the contact 15 therebetween. . The inner surface 61 of the pair of portions 45 and 46 has an inclined cam surface at the tip of the second direction D2, and the gap between each other becomes narrower as it goes to the second direction D2. ought.

The press part 62 is comprised by this inclined cam surface. The pair of pressing portions 62 may press the pressurized portion 63 provided at the tip portion 36b of the corresponding first piece portion 36 of the pair of elastic piece portions 30 and 31. In the extension release position of the operation member 16 shown in FIG. 9, a pair of press part 62 abuts and presses against the corresponding to-be-pressed part 63, and the space | interval between a pair of clamping parts 40 is adjusted. The clamping force of the outer lead 10 by these clamping parts 40 can be increased as a result. Moreover, the fall of the clamping force by the settling of the pair of elastic piece parts 30 and 31 can be prevented.

The pair of pressing portions 62 correspond to the pressurized portion 63 when the operation member 16 is displaced from the expansion position shown in FIG. 8 to the expansion release position shown in FIG. 9 along the first direction D1. Contact and pressurize. For this reason, the force which presses the corresponding to-be-pressed part 63 to a 1st direction D1 is converted into the force of the direction Y orthogonal to a 1st direction D1. For this reason, the pair of elastic piece portions 30 and 31 are close to each other.

The connecting portion 47 is formed in a plate shape and connects one end of the pair of portions 45 and 46 in the direction X. A groove 64 extending in the direction Z is formed in the outer side surface 65 of the connecting portion 47, and as shown in FIG. 7, the guide portion 26 of the first side portion 23b on the other side of the circumferential wall 21. ) Is fitted.

4 and 12, the outer shape of the cross section obtained by cutting the portion of the operation member 16 in which the handle portion 51 is not provided in the direction orthogonal to the direction Z is the insertion concave portion viewed from the first direction D1. It almost coincides with the shape of the periphery 50 of the opening of 20. For this reason, the insertion recessed part 20 is a guide groove for guiding the operation member 16 to an extension position and an extension release position along the 1st and 2nd directions D1 and D2.

With reference to FIGS. 8 and 12, the pair of elastic piece portions 30, 31 is formed by the inner surface 66 of the connecting portion 47 and the inner surface 61 of the pair of portions 45, 46. An acceptable space 67 (space between the pair of portions 45 and 46) is partitioned.

In this space 67, each of the front end of the first direction D1 and the front end of the second direction D2 is open to the outside, and these open areas are a pair of openings 68 and 69. The space 67 is opened in the second direction D2 by the opening portion 68, whereby the space 67 can be confirmed from the outside. In addition, a corresponding outer lead 10 can be inserted into the space 67 from the opening portion 68.

The pair of extension operating portions 48 consists of small pieces provided on the inner side 66 of the connecting portion 47. The pair of extension operating portions 48 engage with the corresponding engagement portions 42 of the pair of elastic members 30 and 31, thereby providing a pair of first through the pair of first piece portions 36. The function which expanded the space | interval between the clamping part 40 of 2 piece part 37 is completed. These pair of extension operating parts 48 are arrange | positioned in the direction X, and are fitted in the pair of engagement parts 42. As shown in FIG.

The pair of extension operating portions 48 respectively include the first inclined cam surface 71 provided at the front end of the first direction D1 and the second inclined cam surface 72 provided at the front end of the second direction D2. Have

The pair of first inclined cam surfaces 71 widen the interval between the pair of engagement portions 41 when the operation member 16 is fitted into the insertion recess 20 along the first direction D1. Complete the function. The interval between the pair of inclined cam surfaces 71 is gradually narrowed as it goes in the first direction D1.

These pair of 1st inclined cam surfaces 71 abut the engaging part 42 corresponding when the operation member 16 displaces in the 1st direction D1. For this reason, the force which the operation member 16 presses the engaging part 42 to the 1st direction D1, the force of the direction Y orthogonal to a 1st direction D1 (the gap between a pair of engaging parts 42 is adjusted). Spreading force).

The pair of second inclined cam surfaces 72 abut the corresponding engagement portions 42 when the operation member 16 moves along the second direction D2 and is displaced from the release release position to the extension position, The function which widens the space | interval between a pair of engagement parts 42 is completed. The interval between the pair of inclined cam surfaces 72 is gradually narrowed as it goes in the second direction D2.

 The pair of second inclined cam surfaces 72 abut the corresponding engaging portions 42 when the operation member 16 is displaced to the extended position. For this reason, the force which the operation member 16 presses the engaging part 42 to the 2nd direction D2 is the force of the direction Y orthogonal to the 2nd direction D2 (the space | interval between a pair of engaging parts 42). Spreading force).

With reference to FIG. 11, each expansion operation part 48 includes the 1st control part 73. As shown in FIG. In each of the first restricting portions 73, when the operation member 16 is in the unlocking position, the first piece portion 36 of the corresponding elastic piece portions 30, 31 is in the direction X (cold cathode tube 5 The long direction L of () is for restricting the displacement in the direction along the axial direction of the outer lead 10).

In the unlocking position of the operation member 16 shown in FIG. 11, each 1st regulation part 73 opposes the base end part 36a of the corresponding 1st piece part 36, and corresponds to the said corresponding part. It is restrict | limited that the 1st piece part 36 moves to one side of direction X (inner side of the paper in FIG. 11).

Moreover, each expansion operation part 48 includes the 2nd control part 74. As shown in FIG. When each of the second restricting portions 74 has the operation member 16 in the unlocking position, the second piece 37 of the corresponding elastic members 30 and 31 moves in the direction X (outer lead 10). In the direction along the axial direction).

In the unlocking position of the operating member 16, each second restricting portion 74 faces the tip portion 430 of the corresponding second piece portion 37, and the corresponding second piece It is restrict | limited that the part 37 moves to one side of the direction X (inside of the paper surface in FIG. 11).

Referring to FIG. 8, the first side portion 23a on one side of the circumferential wall 21 includes a third restricting portion 75. The third restricting portion 75 is such that each of the first piece portions 36 of the pair of elastic piece portions 30 and 31 is displaced in the direction X (the direction along the axial direction of the outer lead 10). It is to regulate things. The third restricting portion 75 opposes each of the first piece portions 36 and restricts the movement of the first piece portion 36 to the other side of the direction X.

With reference to FIGS. 10 and 11, the extended position of the operation member 16 is such that the pair of clamping portions 40 can be inserted between the pair of clamping portions 40 without inserting the outer lead 10. It is a position for enlarging the space between) by the expansion operation part 48. FIG. The extension release position is a position for releasing the extension.

With reference to FIG. 10, in the liquid crystal display device which has the above-mentioned schematic structure, installation of the cold cathode tube 5 (outer lead 10) is performed as follows. That is, first, the operation member 16 is held in the extended position shown in FIG. The pair of extension operating portions 48 of the operating member 16 are engaged with the engaging portions 42 of the corresponding elastic members 30 and 31, and the interval between the pair of second piece portions 37 Widens. At this time, the interval between the pair of clamping portions 40 becomes wider than the diameter of the outer lead 10, and the interval between the pair of first narrowing portions 39 is wider than the diameter of the outer lead 10. It is.

In this state, as shown in FIGS. 2 and 10, the corresponding cold cathode tube 5 is gripped by hand (not shown) or the like, and the outer lead 10 of the cold cathode tube 5 is operated by an operation member ( 16) in the direction Z. Then, the cold cathode tube 5 is moved in the first direction D1 which is the mounting direction, and the intermediate portion of the cold cathode tube 5 is fitted to the holding portion 13 of the clamp member 11. As a result, the intermediate portion of the cold cathode tube 5 is held by the clamp member 11, and the corresponding outer lead 10 of the cold cathode tube 5 is inserted into the recess as indicated by the outline arrow. 20) and is disposed between the pair of clamping portion (40).

Next, the operation member 16 is moved in the first direction D1 to displace the operation member 16 from the expansion position shown in FIG. 10 to the extension release position shown in FIG. 11. As a result, the engagement of the pair of engagement portions 42 by the pair of extension operating portions 48 is released, and as a result, the pair of narrows due to the elastic force of the pair of elastic piece portions 30 and 31 is released. The branch part 40 clamps the corresponding outer lead 10 with the contact part 44. This achieves an electrical connection between the contact 15 and the corresponding outer lead 10. Moreover, the space | interval between a pair of 1st and 2nd narrowing parts 39 and 41 becomes narrower than the diameter of the corresponding outer lead 10. FIG.

In addition, when the operation member 16 is displaced to the unlocking position, the pair of press portions 62 presses the corresponding press portion 63 as indicated by arrow F1. For this reason, these to-be-pressed parts 63 are moved to the direction Y so that they may approach each other. For this reason, the space | interval of a pair of 1st piece part 36 becomes narrow, As a result, the pressing force acts to narrow the distance between the clamping part 40 to a pair of 2nd piece part 37. As shown in FIG. For this reason, the clamping force of the corresponding outer lead 10 by a pair of clamping part 40 becomes high.

In addition, when the operation member 16 is displaced to the unlocking position, the arrow F2 moves the distal end portion 430 of the second piece portion 37 to which the base end portion 36a of the pair of first piece portions 36 corresponds. Press as shown. As a result, these tip portions 430 are moved in the direction Y to approach each other. For this reason, the space | interval between a pair of front-end | tip part 430 becomes narrow, As a result, the pressing force acts to narrow the distance between a pair of clamping part 40. As shown in FIG. For this reason, the clamping force of the corresponding outer lead 10 by a pair of clamping part 40 becomes higher.

On the other hand, in order to remove the outer lead 10 from the contact 15, first, the operation member 16 is displaced from the extension release position to the extension position along the 2nd direction D2 as shown in FIG. When the operating member 16 is displaced to the extended position, the second inclined cam surface 72 of the pair of extension operating portions 48 is engaged with the corresponding engagement portion 42 to engage these pairs of engagements. The distance between the sections 42 is increased, and the gap between the pair of clamping portions 40 is increased with this. The electrical connection between the pair of clamping portions 40 and the corresponding outer leads 10 is released.

Next, as illustrated in FIGS. 2 and 10, the cold cathode tube 5 is gripped by hand or the like, and the cold cathode tube 5 is removed from the holding part 13 of the clamp member 11, and then, in the second direction D2. Move it. For this reason, the corresponding outer lead 10 of the cold cathode tube 5 is separated from the pair of clamping portions 40 between the pair of first narrowing portions 39 and between the pair of guide portions 43. It passes through and is taken out from the insertion recess 20.

As described above, according to the present embodiment, the clamping portion 40 as the clamping portion of the pair of elastic piece portions 30 and 31 elastically clamps the corresponding outer lead 10, thereby providing a predetermined contact pressure ( Iii) and contact with this outer lead 10. For this reason, the electrical connection of the contact 15 and the outer lead 10 can be reliably performed.

Moreover, by widening the space | interval between a pair of clamping part 40 by a pair of expansion operation part 48, the outer lead 10 corresponding between these clamping parts 40 can be easily inserted with little force. As a result, electrical contact between the connector 6 and the outer lead 10 can be easily performed. In addition, when the connector 6 is connected to each of the pair of outer leads 10 of the cold cathode tube 5, and the connector 6 is mounted on the circuit board 4, first, the circuit board 4 is connected to the circuit board 4. The pair of connectors 6 are mounted in a single state, respectively. Thereafter, the pair of outer leads 10 of the cold cathode tube 5 passes through the insertion recesses 20 of the corresponding connectors 6 along the first direction D1, and the pair of outer leads 10 ) Can be sandwiched between the corresponding pair of sandwiching portions 40, respectively. That is, the connector 6 can be attached to the circuit board 4 in a single product state, and then the connector 6 and the outer lead 10 can be connected.

In addition, since the operation member 16 is connected to the outer lead 10 corresponding to the contact 15 in a simple and easy operation of moving the operation member 16 in the first direction D1 and expanding from the extension position to the release position, The connection work of the contact 15 and the corresponding outer lead 10 can be automated using a machine.

In addition, by displacing the operation member 16 to the extended position to widen the interval between the pair of clamping portions 40, the outer lead 10 corresponding to the gap between the clamping portions 40 can be easily inserted by a non-insertion input. can do. Moreover, after inserting the outer lid 10, the operation member 16 is displaced to the release release position, and the extension by the pair of extension operation portions 48 is released to thereby release the pair of elastic piece portions 30 and 31. By the elastic force, the outer lead 10 can be reliably sandwiched, and electrical connection with the outer lead 10 can be made more reliable.

Moreover, the 2nd piece part 37 of the pair of elastic piece parts 30 and 31 is folded back from the front-end | tip 36b of the corresponding 1st piece part 36, and is along the 1st direction D1. By extending, the flexibility of the second piece portion 37 can be increased, and an excessive reaction force acts on the outer lead 10 when the outer lead 10 is inserted between the clamping portions 40. Can be prevented.

In addition, the pair of extension operation portions 48 are engaged with the engagement portion 42 provided in the first piece portion 36 of the corresponding elastic piece portions 30 and 31, respectively, so that the first piece portion ( Through 36, the space | interval between the clamping part 40 of the 2nd piece part 37 is expanded. For this reason, each of a pair of elastic piece parts 30 and 31 can be elastically deformed, and the space | interval between clamping parts 40 can be widened. By elastically deforming only one side of the pair of elastic piece portions 30 and 31, the elastic deformation amount (load) of the elastic piece portion to be elastically deformed can be reduced as compared with the case where the gap between the clamping portions 40 is widened. In addition, since the second piece portion 37 is not elastically deformed to widen the gap between the sandwich portions 40, it is possible to prevent the settling in the second piece portion 37.

Moreover, the 2nd inclined cam surface 72 which contacts the corresponding engagement part 42 is formed in each of a pair of extension operation part 48. As shown in FIG. The second inclined cam surface 72 of V abuts on the corresponding engagement portion 42 when the operation member 16 is displaced to the extended position. For this reason, the force which presses the engagement part 42 to 2nd direction D2 is converted into the force of the direction Y. For this reason, the force which moves the operation member 16 to the 2nd direction D2 can be converted into the force which widens the space | interval between a pair of clamping parts 40. When moving the operation member 16, the space | interval between a pair of clamping parts 40 can be reliably widened. Further, the first restricting portion 73 is provided in each of the pair of extension operating portions 48, so that the pair of first piece portions 36 are improperly moved to one side of the direction X, thereby providing an extra load. You can prevent receiving. Moreover, since the 3rd restriction part 75 is provided in the circumference wall 21, it can prevent that a pair of 1st piece part 36 improperly moves to the other side of the direction X, and receives an extra load. have.

Moreover, by providing the 2nd restriction part 74 in each of the pair of extension operation parts 48, the pair of 2nd piece part 37 improperly moved to one side of the direction X, and an extra load is applied. You can prevent receiving. In addition, it is possible to prevent these second piece portions 37 from being inappropriately moved to one side of the direction X so that the position of the outer lead 10 and the clamping portion 40 corresponding thereto is shifted.

Moreover, by providing a pair of press parts 62 to the operation member 16, the force which a pair of clamping part 40 clamps the outer lid 10 can increase, As a result, the clamping part The contact between the 40 and the outer lead 10 can be more reliably performed.

Moreover, each press part 62 presses the to-be-pressed part 63 provided in the corresponding 1st piece part 36, respectively, and the pair of elastic piece parts with which the force from each press part 62 respond | corresponds. It is certainly transmitted to (30, 31). Moreover, the 2nd piece part 37 (outer lead 10) is transmitted to the 2nd piece part 37 through the 1st piece part 36 corresponding to the pressing force from each press part 62. FIG. Excessive pressing force on)) can be prevented.

In addition, the pair of portions 45 and 46 of the operation member 16 are provided with the pressing portions 62, respectively, and the pair of elastic piece portions 30 and 31 by the pair of pressing portions 62 are provided. ) Can be interposed, and as a result, the pressing force can be reliably applied to such elastic piece portions 30 and 31.

In addition, each of the pair of pressing portions 62 is an inclined cam surface. These inclined cam surfaces abut the corresponding pressurized portions 63 when the operation member 16 is displaced to the unlocking position, whereby the pressurized portions 62 correspond to the pressurized portions 63 corresponding thereto. The pressing force in the direction D1 of is converted to the direction Y. For this reason, the force which moves the operation member 16 to the extension release position can be converted into the force which narrows the space | interval between a pair of clamping parts 40. When moving the operation member 16, the space | interval between a pair of clamping parts 40 can be reliably narrowed.

In addition, the outer lead 10, which is easily deformed at an extremely small diameter, can be easily inserted between the pair of clamping portions 40 with a light force, thereby preventing the outer lead 10 from being unreasonably applied. can do. It is possible to prevent the outer lead 10 from being damaged.

In addition, the operation member 16 is held in the housing 14 so as to be displaceable between the expansion position and the expansion release position. While holding the operating member 16 in the housing 14, the operating member 16 can be displaced to the extended position and the unreleased position.

Moreover, the insertion recessed part 20 is used as a guide groove. By the simple and easy operation of moving the operation member 16 along the insertion recess 20, the operation unit 16 can be reliably displaced to the expansion position and the expansion release position.

Moreover, the opening part 68 is formed in the operation member 16. Therefore, the space 67 between the pair of portions 45 and 46 can be confirmed through the opening 68. For this reason, whether or not each clamping portion 40 is in contact with the corresponding outer lead 10 or whether the pair of pressing portions 62 presses the pair of pressurized portions 63 is determined. Whether or not can be easily confirmed.

Moreover, the 1st holding mechanism 55 can hold | maintain the operation member 16 to an extended position reliably.

In addition, the operation member 16 can be reliably held in the unlocking position by the second holding mechanism 56.

In addition, by arranging the cold cathode tube 5 on the first surface 4a of the circuit board 4, and by placing the inverter circuit on the second surface 4b of the circuit board 4, such a member is provided. Can be laminated in the thickness direction of the circuit board 4. For this reason, the area occupied in the planar direction of the circuit board 4 can be made small, and space saving can be achieved. Moreover, the circuit board 4 is arrange | positioned between the cold cathode tube 5 and the inverter circuit 7, and the circuit board 4 is used as an insulating layer between the cold cathode tube 5 and the inverter circuit. Can be.

In addition, this invention is not limited to the content of embodiment mentioned above.

For example, instead of the cold cathode tube 5, an external electrode fluorescent tube (EEFL: 5A) may be used as shown in FIG. In this case, the electrode layer 10A as a terminal is coated on each of the peripheral surfaces of the pair of end portions 9A (only one end portion 9A in FIG. 13) of the external electrode fluorescent tube 5A. .

In this case, 10 A of electrode layers can be easily inserted between the pair of clamping parts 40 with little force, and it can prevent that an excessive force is applied to 10 A of electrode layers. It is possible to prevent the electrode layer 10A from rubbing against the pair of elastic piece portions 30 and 31.

In addition, the tip portion 430 of each second piece portion 37 may be omitted. Moreover, you may provide the inclined cam surface similar to the 1st and 2nd inclined cam surfaces 71 and 72 of the extension operation part 48 to the engagement part 42. FIG. In this case, instead of the first and second inclined cam surfaces 71 and 72, the straightening surface in the direction Z may be provided in the expansion operation unit 48.

In addition, the pair of pressing portions 62 and the corresponding pair of pressurized portions 63 may be eliminated. In addition, the pair of first narrowing portions 39 may not be provided, the pair of second narrowing portions 41 may not be provided, and the pair of guide portions 43 may be omitted. In addition, either of the pair of expansion operation units 48 may be omitted. Moreover, you may provide the inclined cam surface similar to the press part 62 to the to-be-pressed part 63. FIG. In this case, the pressing section 62 may be a straight surface straight in the direction Z.

In addition, you may use the operation member 16A shown in FIG. 14 instead of the operation member 16. The operating member 16A has an open blocking portion 76 which prevents the space 67 between the pair of portions 45 and 46 from opening in the second direction D2.

The open stop 76 is integrally formed using the pair of portions 45 and 46 and a single member. The open blocking portion 76 connects the tip portions of the pair of portions 45 and 46 in the second direction D2, respectively. By providing the open blocking portion 76, foreign matters can be prevented from entering the space 67 between the pair of portions 45 and 46.

In addition, when the portion of the open stop portion 76 is formed of a transparent material, the space between the pair of portions 45 and 46 can be confirmed from the outside. In addition, the open blocking portion 76 may be formed separately from the pair of portions 45 and 46, and may be connected via a hinge mechanism. In this case, the open blocking portion 76 can be opened to confirm the space between the pair of portions 45 and 46.

In addition, the contact 15A shown in FIG. 15 may be used instead of the contact 15. In each of the pair of elastic piece portions 30A and 31A, a fitting portion 42A is provided on the first piece portion 36a itself. In this case, a part of the intermediate part of a pair of 1st piece part 36a expands in the direction which approaches each other, and this expanded part turns into engaging part 42A. The extension operating portion 48A is disposed inside the corresponding elastic piece portions 30A and 31A.

In addition, the contact 15B shown in FIG. 16 may be used instead of the contact 15. The pair of elastic piece portions 30B and 31B are folded back from the tip of the second piece portion 37B extending along the second direction D2 and the second direction D2 of the second piece portion 37B. Each of the first piece portions 36B is folded and extends along the first direction D1. The pair of second piece portions 37B are disposed relatively close to each other, and the pair of first piece portions 36B are disposed relatively far from each other. The clamping part 40 is arrange | positioned at each 2nd piece part 37B, respectively.

Moreover, the 1st regulation part 73 may not be provided, the 2nd regulation part 74 may be sufficient, and the 3rd regulation part 75 may not be provided. The number of clamp members 11 provided in one cold cathode tube 5 may be two or more. In addition, the connector 6 may be applied to an edge light type liquid crystal display device.

Moreover, you may use the connector of this invention for connection with axial terminals other than a fluorescent tube. For example, it can use for the connection with the terminal of the multipole cable containing many stranded wires. In the case of a multi-pole cable, the diameter of the terminal is large, and it is necessary to ensure sufficient contact pressure with the contact. In addition, the effect of using the connector of the present invention, which can sufficiently secure the contact pressure and can be attached to the contact without insertion, is excellent.

As mentioned above, although this invention was demonstrated in detail by the specific shape, those skilled in the art who understood the above content can easily consider the change, the adaptation, and the equivalent. Therefore, the present invention should be within the scope of the claims and their equivalents.

This application corresponds to Japanese Patent Application No. 2005-234794 filed with the Japan Patent Office on August 12, 2005, and the development of this application is incorporated herein by reference.

According to this invention, the electrical connector attached to the fluorescent tube for backlight of a liquid crystal display device, etc., and the liquid crystal display device provided with this can be provided.

Claims (21)

Electrical connectors Insulating housing, A contact held by the housing, An operation member for operating the contact, The housing includes an insertion recess in which an axial terminal is inserted along the first direction, The contact comprises a pair of elastic piece portions facing each other, At least a portion of the pair of elastic pieces is exposed to the insertion recess, The pair of elastic piece portions each include a clamping portion for clamping the terminal in a predetermined clamping direction orthogonal to the first direction, The first direction is along the radial direction of the terminal, The operation member includes an extension operation portion for widening the interval between the sandwich portions of the pair of elastic pieces, The operation member is displaceable in a second direction which is a direction opposite to the first direction and the first direction, The operation member is displaced to the extension position with the displacement in the second direction, and displaced to the extension release position with the displacement in the first direction, The electric connector, characterized in that the distance between the pair of clamping portions is extended at an interval capable of inserting the terminal without insertion through the pair of clamping portions by the expanding operation portion of the operating member displaced to the opening position. . delete The method of claim 1, Each of the pair of elastic piece portions has a first piece portion extending along the second direction and a second piece extending along the first direction by being folded back from the tip of the first piece portion. Including a piece part, The second piece portions of the pair of elastic piece portions are disposed relatively close to each other, the first piece portions of the pair of elastic piece portions are disposed relatively relatively to each other, The said clamping part is arrange | positioned at each said 2nd piece part, respectively, The electrical connector characterized by the above-mentioned. The method of claim 3, A pair of expansion operation part is provided in the said operation member, The pair of extension operation portions each engage with the engagement portion provided in the first piece portion of the corresponding elastic piece portion, thereby increasing the distance between the clamping portions of the second piece portion through the first piece portion. Electrical connectors. The method of claim 4, wherein On at least one of the pair of expansion operation portions and the engagement portion, an inclined cam surface that abuts on the other side is formed, The inclined cam surface abuts the other side when the operation member is displaced to the extended position, so that the force that the operation member pushes the engagement portion in the second direction is perpendicular to the second direction. Electrical connector, characterized in that for converting to a force in the direction. The method of claim 4, wherein And the pair of extension operating portions include a restricting portion for restricting the displacement of the first piece portion in the direction along the axial direction of the terminal when the operation member is in the unlocking position. The method of claim 4, wherein And the pair of extension operating portions include a restricting portion for restricting the displacement of the second piece portion in the direction along the axial direction of the terminal when the operation member is in the unlocking position. The method of claim 1, The operation member includes a pair of pressing portions, And the pair of pressing portions press each of the pair of elastic pieces so as to narrow the gap between the pair of clamping portions when the operation member is in the unlocking position. The method of claim 8, And each of the pair of pressurizing portions pressurizes a pressurized portion provided in a corresponding first piece portion. The method of claim 8, The operation member includes a pair of portions disposed on both sides of the pair of elastic pieces in an insertion recess; And said pressing portion is provided in each of said pair of portions. The method of claim 8, On at least one of the pair of pressurizing portions and the pressurized portion, an inclined cam surface abutting the other side is formed, The inclined cam surface abuts on the other side when the operation member is displaced to the unlocking position, whereby the pressurizing portion converts the force pushing the pressurized portion in the first direction into a force in a direction orthogonal to the first direction. Characterized by electrical connectors. The method of claim 1, And the terminal comprises a terminal of a fluorescent tube. The method of claim 12,  The fluorescent tube includes a cold cathode tube,  And the terminal includes an outer lead exposing from an end of the cold cathode tube. The method of claim 12, The fluorescent tube includes an external electrode fluorescent tube, And the terminal comprises an electrode layer coated on a circumferential surface of an end of an external electrode fluorescent tube. The method of claim 1, And the operation member is held by the housing so as to be displaceable between the extension position and the extension release position. The method of claim 1, And the insertion recess includes a guide groove for guiding the operation member to the open position and the unlock position along the first and second directions. The method of claim 15, The operation member includes a pair of portions disposed on both sides disposed between the pair of elastic piece portions in the insertion recess, The said operation member forms the opening part for opening the space between the said pair of parts to the said 2nd direction, The electric connector characterized by the above-mentioned. The method of claim 15, The operation member includes a pair of portions disposed on both sides with the pair of elastic pieces interposed in an insertion recess, And the operation member includes an opening stop portion to prevent the space between the pair of portions from opening in the second direction. The method of claim 1, And a holding mechanism for holding the operation member in the extended position. The method of claim 1, And a holding mechanism for holding the operation member in the unlocking position. A liquid crystal panel having a surface and a back; A circuit board having a first surface opposite to a rear surface of the liquid crystal panel and a second surface opposite to the first surface; The electrical connector according to any one of first and third to 20 mounted to the circuit board, A fluorescent tube for backlight disposed between the rear surface of the liquid crystal panel and the first surface of the circuit board, the terminal having a terminal at an end thereof; An inverter circuit disposed on a second surface of the circuit board, for supplying electric power to a fluorescent tube; The longitudinal direction of the fluorescent tube is parallel to the rear surface of the liquid crystal panel, The clamping portion of the pair of elastic piece portions of the contact of the electrical connector sandwiches the terminal of the end of the fluorescent tube between the rear surface of the liquid crystal panel and the first surface of the circuit board, The contact includes a lead connected to the inverter circuit, And the lead extends along the second surface of the circuit board.

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