CN101802494A

CN101802494A - Feeding terminal, cold cathode discharge lamp having feeding terminal, backlight unit having the cold cathode discharge lamp, and liquid crystal display device having the backlight unit

Info

Publication number: CN101802494A
Application number: CN200880001366A
Authority: CN
Inventors: 中谷俊文; 马庭隆司; 小野泰臧; 西田丰; 村上昌伸
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2007-12-26
Filing date: 2008-12-25
Publication date: 2010-08-11
Also published as: WO2009081590A1; TW200934983A; KR20090101436A; JPWO2009081590A1

Abstract

A feeding terminal (2) is mounted on the end of a cold cathode discharge lamp including: a tube-shaped glass vessel (6); and an external lead line (10B) sealed into the end of the glass vessel (6) and extending outward in the tube axis direction. The feeding terminal (2) includes a main body (16) into which the end of the glass vessel (6) is inserted; and an elastically sandwiching unit (112) arranged on the main body (16) so as to sandwich the external lead line (10B) with an elastic resilience in the state when the external lead line (10B) is inserted. This assures an electric connection with a lead line (10) and prevents damage of the glass tube when arranging the glass tube in a cold cathode discharge lamp (4).

Description

Power supply terminal, have the cold-cathode discharge lamp of this power supply terminal, the liquid crystal indicator that possesses the back light unit of this cold-cathode discharge lamp and possess this back light unit

Technical field

The present invention relates to power supply terminal etc., particularly relate to a kind of being used for cold-cathode discharge lamp is installed to power supply terminal on the connector of back light unit for example.

Background technology

A kind of as cold-cathode discharge lamp, cold-cathode fluorescence lamp is suitable for realizing tinyization of caliber, so it is suitable as the light source of the back light unit that requires slimming (miniaturization).For cold-cathode fluorescence lamp is installed on the back light unit, and the lead-in wire that makes the cold-cathode fluorescence lamp two ends is easy between the power supply realize being electrically connected with lighting, and at the both ends of cold-cathode fluorescence lamp power supply terminal is set.

Power supply terminal constitutes by main part cylindraceous with from the lead-in wire connecting portion that main part extend to be provided with.Main part be extrapolated in the cold-cathode fluorescence lamp by the end of hermetic closed glass tube, the lead-in wire connecting portion be electrically connected with described lead-in wire.

The power supply terminal that use is made of said structure, the main part of power supply terminal is embedded on the connector that is arranged in the back light unit, just can cold-cathode fluorescence lamp be installed on this back light unit, also can power via connector and power supply terminal simultaneously by lighting power supply with one touch type (one touch).

Here, need not give unnecessary details, the lead-in wire connecting portion in the power supply terminal is to be used for and will to flow to the pith of cold-cathode fluorescence lamp reliably from the electric energy of lighting power supply, and in the past, people have proposed various structural schemes.

For example, disclose a kind of technology in the patent documentation 1, the end that tube axial direction that will be from main part along described glass tube extends the rectangle brace that is provided with is folded into the right angle, and the inserting hole of lead-in wire is set at this folding portion branch.And, inject scolder will going between to insert under the state lead in the inserting hole, so that will go between and fill in the gap of inserting hole, both are electrically connected.

Thus, lead-in wire just is electrically connected by scolder reliably with brace.

Patent documentation 1: the Japan Patent spy opens the 2007-234551 communique

But though scolder be we can say the function that also has as engagement member, its mechanical strength is very low usually.Thereby, for example main part being applied along described tube axial direction under the situation of external force, scolder can peel off from a side member, and perhaps scolder itself has taken place to break, and can produce the problem that lead-in wire and brace can't conductings.

In order to address this problem, also can consider the top ends of brace is formed suitable shape, then this top ends is riveted on the lead-in wire, but when riveting, lead-in wire can be subjected to the effect of excessive power (power that the lead-in wire footpath makes progress), be envisioned that to produce following problem, that is: be used to keep the glass tube of this lead-in wire be full of cracks (damage) partly to occur.

Summary of the invention

The present invention has used for reference the problems referred to above and has proposed, its objective is provides being electrically connected of a kind of reliable guarantee as much as possible and lead-in wire, prevents the power supply terminal of glass tube damage simultaneously again can be on being set to cold-cathode discharge lamp the time, and the cold-cathode discharge lamp etc. with this power supply terminal.

For achieving the above object, power supply terminal of the present invention relates to a kind of like this power supply terminal, it is installed in the end of cold-cathode discharge lamp, this cold-cathode discharge lamp has the glass container of tubulose and is sealed in the end of this glass container and the lead-in wire that extends outwardly along tube axial direction simultaneously, it is characterized in that, this power supply terminal has: main part is inserted in outward on the end periphery of described glass container; And resilient clamp portion, be arranged on the described main part, under the state that has inserted described lead-in wire, utilize this lead-in wire of elastic restoring force clamping.

In addition, it is characterized in that, described resilient clamp portion comprises: extend at least 2 flexure strip portions that are provided with and be arranged on each top ends of these flexure strip portions and the abutting part that connects with the periphery of described lead-in wire from described main part, under the state before described lead-in wire inserts, be present in position with the butt position of described lead-in wire on the described abutting part than the more close radially inner side of virtual outer peripheral face of this lead-in wire.

Perhaps, it is characterized in that, described main part is cylindric, described resilient clamp portion comprises: extend from described main part and be provided with and have the circular cone body of at least 2 slits that are opened on the described tube axial direction and be arranged on the top of this circular cone body and the abutting part that connects with the outer peripheral face of described lead-in wire, a part of outer surface of circular cone body is provided with taper thread, and described power supply terminal further has the collar nut that combines with described taper thread screw thread.

In addition, it is characterized in that the described butt position on the described abutting part forms and the matched shape of the outer peripheral face that goes between, and carry out face with this lead-in wire periphery and contact.

And then, it is characterized in that inserted under the state of described lead-in wire, utilize described elastic restoring force, described abutting part is with 100[gf at least in described resilient clamp portion] above pressing force pushes described lead-in wire.

For achieving the above object, cold-cathode discharge lamp of the present invention relates to a kind of cold-cathode discharge lamp that has power supply terminal, it has the glass container of tubulose and is sealed in the end of this glass container and the lead-in wire that extends outwardly along tube axial direction simultaneously, in the attaching of the end of glass container power supply terminal is arranged, wherein, described power supply terminal is the power supply terminal of above-mentioned explanation, and described main part is inserted in outward on the end periphery of described glass container, and described lead-in wire is inserted in the described resilient clamp portion.

For achieving the above object, back light unit of the present invention is characterised in that to have the above-mentioned cold-cathode discharge lamp of power supply terminal that has as light source.

For achieving the above object, liquid crystal indicator of the present invention is characterised in that, possesses LCDs and is provided in above-mentioned back light unit on the back side of described LCDs.

According to the power supply terminal that is made of said structure, its resilient clamp portion utilizes elastic restoring force that this lead-in wire is clamped under lead-in wire is inserted into wherein state, realizes thus being electrically connected.Therefore, be not easy to take place to add therein the problems referred to above that scolder etc. is caused for the electrical connection that realizes both.Therefore, can be electrically connected reliably.

And then lead-in wire can be clamped by resilient clamp portion by insertion, therefore, when being attached to power supply terminal on the cold-cathode discharge lamp, is not easy to apply excessive power to lead-in wire.Thereby, can prevent in the time of on being set to cold-cathode discharge lamp that glass tube from damaging.

Description of drawings

Fig. 1 is the stereogram of cold-cathode fluorescence lamp after local excision that possesses the power supply terminal of the 1st embodiment.

Fig. 2 is the profilograph and the right side view of an end sections of above-mentioned cold-cathode fluorescence lamp.

Fig. 3 is the figure of the power supply terminal of expression the 1st embodiment, (a) be the stereogram that is attached to glass container power supply terminal before, (b) being the stereogram of the power supply terminal after the attaching, (c) is to be used to illustrate the free end part of clip portion and the gap S between the part of main part except that clip portion ₁, S ₂Figure, (d) be the width S that is used to illustrate the space part between the outer surface of the inner surface of main part and glass container ₃Figure.

Fig. 4 is the figure of power supply terminal of the variation of expression the 1st embodiment.

Fig. 5 is illustrated in the figure that is provided with the example of retainer on the above-mentioned power supply terminal, wherein shows the abutting part of this power supply terminal and the part of the flexure strip portion corresponding with it, (a) is front view, (b) is the section AA in (a), (c) is right side view.

Fig. 6 (a) and (b) are figure of the variation of the above-mentioned power supply terminal of expression.

Fig. 7 (a) and (b) and (c), (d) be the figure that represents the variation of above-mentioned power supply terminal respectively.

Fig. 8 is the figure of the power supply terminal of expression the 2nd embodiment.

Fig. 9 is the figure of the power supply terminal of expression the 3rd embodiment.

The front view and the right side view of an end sections of the cold-cathode fluorescence lamp of the power supply terminal of Figure 10 is attaching the 4th embodiment.

Figure 11 is the figure of the power supply terminal of expression the 5th embodiment.

Figure 12 is that the power supply terminal of expression the 5th embodiment is before being attached on the cold-cathode fluorescence lamp and the figure of state afterwards.

Figure 13 is the figure of the power supply terminal of expression the 6th embodiment.

Figure 14 is the figure of the power supply terminal of expression the 7th embodiment.

Figure 15 is the figure of the expression back light unit relevant with embodiment.

Figure 16 is that the cold-cathode fluorescence lamp in the above-mentioned back light unit of expression is installed in the installation constitution figure on the outer cover.

Figure 17 is the figure of an example of expression power supply terminal and connector.

Figure 18 is illustrated in the figure that power supply terminal shown in Figure 17 is embedded into the cross section under the state of connector.

Figure 19 is the figure of an example of expression power supply terminal and connector.

Figure 20 is illustrated in the figure that power supply terminal shown in Figure 19 is embedded into the cross section under the state of connector.

Figure 21 is the figure of an example of expression power supply terminal.

Figure 22 is the figure of an example of expression power supply terminal and connector.

Figure 23 is expression liquid crystal indicator the stereogram local excision after relevant with embodiment.

The explanation of symbol

2,80,110,120,140,160,180,190,196...... power supply terminal

4...... cold-cathode fluorescence lamp

6...... glass container

10...... lead-in wire

16,112,122,142...... main part

18,52,54,60,68,82,162,182...... resilient clamp portion

The specific embodiment

Below, with reference to the description of drawings embodiments of the present invention.

(the 1st embodiment)

Fig. 1 is local excision's stereogram of the schematic configuration of the power supply terminal 2 of expression the 1st embodiment and the cold-cathode fluorescence lamp 4 that two ends are provided with power supply terminal 2, and Fig. 2 is the profilograph of end sections.Wherein, comprise Fig. 1, Fig. 2 in interior whole accompanying drawings, the engineer's scale between each component parts is also inconsistent.

Cold-cathode fluorescence lamp 4 has the rounded glass container of cross section 6.Glass container 6 is the hermetic closed containers that sealed lead-in wire 10 described later at the both ends of glass tube.In addition, glass container 6 is not limited to the straight tube shape of example among the figure, also can be curved shapes such as U font tubulose, コ font tubulose, S font tubulose, W font tubulose, scroll tubulose for example.In addition, the cross section of glass container (glass tube) also is not limited to circle, also can be flat patterns such as ellipse.

Glass container 6 is made of the pyrex that is used to seal the tungsten line, and an example of its size is total length 730[mm], external diameter 4[mm], internal diameter 3[mm].In addition, the material of glass container 6 is not limited to pyrex, also can be lead glass, crown glass, soda-lime glass and other soft glasses.

The inner sealing of glass container 6 about 1200[μ g] mercury (not shown) and by neon and argon with Ne:95[mol%], Ar:5[mol%] about 8[kPa of mixing of ratio] the neon argon mixture gas of (20[℃]) is as rare gas.Wherein, also can comprise krypton in the rare gas.In this case, can suppress the infrared emission of cold-cathode discharge lamp.And then preferably, contained krypton is more than or equal to 0.5[mol% in the rare gas] and smaller or equal to 5[mol%] scope in.In this case, modulating voltage is changed significantly, can suppress the infrared emission of cold-cathode discharge lamp.For example, for example argon is more than or equal to 0[mol%] and smaller or equal to 9.5[mol%] scope in, neon is more than or equal to 90[mol%] and smaller or equal to 95.5[mol%] scope in, krypton is more than or equal to 0.5[mol%] and smaller or equal to 5[mol%] scope in.And then be more preferably, contained krypton is more than or equal to 0.5[mol% in the rare gas] and smaller or equal to 3[mol%] scope in.And then be more preferably, contained krypton is more than or equal to 1[mol% in the rare gas] and smaller or equal to 3[mol%] scope in.

In addition, be formed with fluorescent membrane 8 on glass container 6 inner surfaces.Fluorescent membrane 8 comprises indigo plant (B), green (G), red (R) these 3 kinds of terres rares fluorophor, and integral body emits white light.In this example, blue emitting phophor uses europkium-activated barium magnesium aluminate [BaMg ₂Al ₁₆O ₂₇=Eu ²⁺] (be called for short: BAM-B), the lanthanum orthophosphate [LaPO that green-emitting phosphor uses the cerium terbium to activate ₄: Ce ³⁺, Tb ³⁺] (be called for short: LAP), red-emitting phosphors uses europkium-activated yittrium oxide [Y ₂O ₃: Eu ³⁺] (be called for short: YOX).

Lead-in wire 10 is connecting lines of the inner lead 10A that is made of tungsten and the outside lead 10B that is made of nickel.The inner lead 10A of lead-in wire 10 partly is sealed in the end of glass container 6, and outside lead 10B extends outwardly along tube axial direction from the sealing part.Inner lead 10A, outside lead 10B have circular cross-section.For example, the line of inner lead 10A directly is 0.8[mm], total length is 3[mm]; The line of outside lead 10B directly is 0.6[mm], total length is 4[mm].In addition, be that preferably, inner lead 10A is made of the alloy (Kovar) or the molybdenum of iron and nickel and cobalt under the situation of pyrex of Kovar alloy line (Kovar) sealing usefulness when glass container 6.In addition, be under the situation of crown glass or soda-lime glass at glass container 6, preferably, inner lead 10A is made of the alloy or the Dumet silk thread of iron and nickel.

Be sealed on the glass container 6 private side ends of the inner lead 10A in glass container 6 ends and engaged electrode 12 by laser weld etc.Electrode 12 is to be the so-called hollow type electrode that bottom tube-like is arranged, and is processed by the niobium rod.Why electrode 12 adopts coreless armature, is to light the sputter (details please refer to the Japan Patent spy and opens 2002-289138 communique etc.) that produces in electrode because of discharge in the process because can suppress lamp effectively like this.In addition, the material that uses in the electrode 12 is not limited to niobium, also can be for example nickel, tantalum, molybdenum, tungsten etc.In addition, electrode 12 also can weld by the scolder that is made of for example nickel foil or Kovar alloy line Alloy Foil with inner lead 10A.

Also can form electronic emission material layer (not shown) on the surface of electrode 12.In this case, compare, can reduce modulating voltage with the lamp that the electronic emission material layer is not set.In addition, owing to be provided with the power supply terminal 2 that is described below, be easy to the heat that electrode 12 produces is distributed by power supply terminal 2, therefore, suppress electrode 12 excessive temperature on every side and risen, suppressed electrode 12 minimizing of mercury on every side, thereby can suppress the sputter of electronic emission material layer, compare with the lamp that power supply terminal 2 is not set, can keep the decline effect of modulating voltage.

Particularly, the electronic emission material layer is formed on for example inner surface of electrode.The electronic emission material layer contains for example rare earth element.This is because with regard to cold-cathode discharge lamp, help to reduce modulating voltage like this.And then, being more preferably, rare earth element is any one above element among lanthanum (La) and the yttrium (Y).

Preferably, the electronic emission material layer further contains any one above material among silicon (Si), aluminium (Al), zirconium (Zr), boron (B), zinc (Zn), bismuth (Bi), phosphorus (P) and the tin (Sn).The decline effect that can further keep in this case, modulating voltage.

And then, also can contain caesium (Cs) compound in the electronic emission material layer.In this case, can further improve the black dull starting characteristic of lamp.In addition, also can on the inner surface of electrode 12 or outer surface, adhere to the cesium compound that is different from the electronic emission material layer in addition.

In addition, preferably, cesium compound uses any one above material among for example cesium sulfate, aluminic acid caesium, niobic acid caesium, wolframic acid caesium, cesium molybdate and the cesium chloride.

Power supply terminal 2 is installed in the end of glass container 6.

Fig. 3 (a) is the stereogram of power supply terminal 2 when not being attached on the glass container 6 as yet, Fig. 3 (b) is the stereogram after power supply terminal 2 is attached on the glass container 6, and Fig. 3 (c) is used to illustrate the free end part of clip portion 20 and the gap S between the part of main part 16 except that clip portion 20 ₁, S ₂Figure, Fig. 3 (d) is the width S that is used to illustrate the space part between the outer surface of the inner surface of main part 16 and glass container 6 ₃Figure.

Power supply terminal 2 has the main part 16 on the end periphery that is extrapolated to glass container 6 and extends out, is used for the resilient clamp portion 18 of clamping lead-in wire 10 (outside lead 10B) from main part 16.Power supply terminal 2 is formed through stamping-out processing (sheet metal processing) by metallic plates such as stainless steels.In addition, using under the stainless situation, from corrosion resistance and flexible angle, preferably SUS304.In addition, be not limited to stainless steel, also can use other metal materials such as phosphor bronze, spring steel, beryllium steel.

Main part 16 is cylindric.Its circumferencial direction of barrel upper edge of main part 16 has equally spaced formed 3 place clip portions 20.Each clip portion 20 is made of the tongue piece that alongst is inserted in the barrel, and these tongue pieces form by the incision that roughly is the U word shape.As shown in the figure, free end that this tongue piece and main part are left part is bent into " ㄑ " word shape towards the inboard, is starting point with the base end part that still connects together with main part 16, and integral body bends (plastic deformation) to the inside.After will being extrapolated on the end periphery of glass container 6 by the main part 16 that said structure constitutes, the top of " ㄑ " word of described free end part will abut to the periphery of glass container 6, clip portion 20 integral body are basic point with described base end part then, to the radial outside elastic deflection (strain) of glass container 6, keep glass container 6 by its restoring force.Thus, glass container 6 will with the roughly consistent state in the axle center of cylindrical body portion 16 under be positioned in this main part 16.

In addition, need not superfluous words, the shape of clip portion 20, number, allocation position etc. are not limited to aforesaid way.Generally speaking, so long as can in main part 16, the structure of elastic bearing glass container 6 get final product.For example, in the clip portion 20 shown in Fig. 3 (b), the base end part of tongue piece is positioned on the tube axial direction of glass container 6 on the tube axial direction that free end near tube end one side, tongue piece is positioned at glass container 6 near pipe central portion one side, but clip portion is not limited to such trend, also can be the such trend of the 20a of clip portion as shown in Figure 4, the base end part of tongue piece be positioned on the tube axial direction of glass container 6 on the tube axial direction that free end near pipe central portion one side, tongue piece is positioned at glass container 6 near tube end one side; And then also can be by the clip portion 20 that moves towards shown in Fig. 3 (b) and the 20a of the clip portion clip portions that constitute in modes such as alternate combinations, two kinds of trends of trend shown in Figure 4 and the structure of depositing.In addition, in the glass container 6 with the contact site of clip portion 20 preferably than tube axial direction central portion one side of the more close glass container 6 of the sealing of glass container 6.In this case, can avoid the shape unsettled sealing that becomes easily, power supply terminal 2 can be installed on the glass container 6 with stable status simultaneously.In addition, preferably, between the free end of clip portion 20 part and the part of main part 16 except that clip portion 20, the gap is set.In this case, when operation such as the handover of carrying out power supply terminal 2, can prevent that free end from partly running into main part 16.And then, shown in Fig. 3 (c), preferably, along the gap S of free end tongue piece bearing of trend partly ₁More than or equal to 0.1[mm].And then, be more preferably gap S ₁More than or equal to 0.2[mm] and smaller or equal to 1.0[mm] scope in.In addition, shown in Fig. 3 (d), be more preferably the gap S of tongue piece bearing of trend end one side of free end part ₂More than or equal to 0.2[mm].And then, be more preferably gap S ₂More than or equal to 0.3[mm] and smaller or equal to 1.0[mm] scope in.

In addition, preferably, the width S of the space part between the outer surface of the inner surface of main part 16 and glass container 6 ₃More than or equal to 0.1[mm].In this case, glass container 6 inserts main part 16 easily.And then, be more preferably the width S of the space part between the outer surface of the inner surface of main part 16 and glass container 6 ₃More than or equal to 0.1[mm] and smaller or equal to 0.5[mm] scope in.And then, be more preferably width S ₃More than or equal to 0.1[mm] and smaller or equal to 0.3[mm] scope in.

Extend out from main part 16 2 elongated OBL

flexure strip portions

22,24 are provided with in opposite directions, further extend from the end of

flexure strip portion

22,24 to be provided with abutting

part

26,28.

Flexure strip portion

22,24 is a basic point with the base end part, and free end is to the direction bending near tubular axis.

Abutting

part

26,28 has circular-arc cross section, its with the butt position of lead-in wire 10 the direct butt of outer peripheral face, be inner

peripheral surface

26A, 28A form and go between 10 the matched shape of outer peripheral face shape, contact with the outer peripheral face formation face of lead-in wire 10.

In addition, at lead-in wire 10 when not being inserted between two abutting

parts

26,28 as yet,

butt position

26A, 28A are present in than the position by the more close radially inner side of imaginary outer peripheral face of the lead-in wire 10 (outside lead 10B) shown in the single-point line.

The power supply terminal 2 that will be made of said structure is after main part 16 1 sides are extrapolated on the cold-cathode fluorescence lamp 4, and as mentioned above, main part 16 utilizes the function of clip portion 20, is relatively located diametrically with respect to glass container 6.In addition, resilient clamp portion 18 is accompanied by the insertion of lead-in wire 10 (outside lead 10B) and expands towards lead-in wire 10 radial outside, utilizes its restoring force 10 to carry out clamping to going between.Thus, lead-in wire 10 is electrically connected with resilient clamp portion 18, and then makes to go between and 10 be electrically connected with main part 16 formation.And then the inboard of

flexure strip

22,24 also has the lead-in wire 10 guiding part functions to abutting

part

26,28 direction guidings, and therefore, 10 top ends that go between can be inserted between the

abutting part

26,28 swimmingly.

Like this, 10 be inserted into its axis direction with respect to resilient clamp portion 18 and just can realize being electrically connected as long as will go between, therefore, substantially not can to go between 10 apply excessive power (go between 10 and the direction of axle center quadrature on power).Thus, can prevent to be used to keep the to go between damage of 10 glass container 6 parts.In addition,, only can cause resilient clamp portion 18 (abutting part 26,28) to slide,, just can keep status of electrically connecting as long as therefore set back at tube axial direction even power supply terminal 2 has been applied power at the tube axial direction of glass container 6.

In addition, pressing force and contact area to outside lead 10B that abutting

part

26,28 produces are irrelevant, as long as it is at least at 100[gf] more than, the lamp current that flows through when lighting is 4[mA]～18[mA] about cold-cathode discharge lamp, confirmed that it can realize good electrical connection.Because irrelevant with contact area, so no matter abutting part be a contact, line contact or face contact with the form that contacts between the outside lead, and all is applicable to the power supply terminal of all embodiments described later.With regard to this example, the material that pressing force (restoring force) can be by changing

flexure strip portion

24,22, shape (length, cross section) etc. are suitably adjusted.

Here, resilient clamp portion 18 in length L shown in Figure 2 (along the length of the tubular axis of glass container 6) preferably at 1.5[mm]～7[mm] scope in.

In addition, when any of abutting

part

26,28 because of certain former thereby with lead-in wire 10 situations about disengaging under, lead-in wire 10 is the so-called cantilever beam of stiff end with regard to becoming with the sealing of glass container 6.Learn by experiment, in this case, if go between 10 in the bending moment of described anchor portion smaller or equal to 1.5[kgfmm], plastic deformation can not take place in 10 (the outside lead 10B) that then go between.What wherein, use in this experiment is to be 0.6[mm by the diameter that Ni (nickel) constitutes] outside lead.In addition, the diameter of outside lead 10B is not limited to 0.6[mm], for example also can be the 0.8[mm identical with above-mentioned embodiment].

And then, shown in the double dot dash line among Fig. 3, guiding part 23,25 can be set also, be used for when being attached to power supply terminal 2 on the glass container 6,10 (the outside lead 10B) that will go between guide to abutting part 26,28.Guiding part 23,25 is present between the peripheral

direction flexure strip

22,24 of main part 16, and their top ends begins to extend to close mutually direction from the barrel of main part 16.

In addition, for the ease of power supply terminal 2 is carried out relative positioning on respect to the tube axial direction of cold-cathode fluorescence lamp 4, also retainer can be set on power supply terminal.

Fig. 5 is that expression is provided with in the power supply terminal 2 of retainer the figure with the part of the corresponding flexure strip of an abutting part 26 portion 22, (a) expression front view, (b) section AA in the expression (a), (c) expression right side view.That wherein, double dot dash line is represented is outside lead 10B.

In this example, will extend the rectangular pieces that is provided with from abutting part 26 and be bent into the right angle, constitute retainer 30.

Thus, as long as power supply terminal 2 is extrapolated to the top that reaches outside lead 10B on the cold-cathode fluorescence lamp 4 and the degree of retainer 30 butts, just can make power supply terminal 2 on tube axial direction, realize relative positioning with respect to cold-cathode fluorescence lamp 4.In addition, not only can on abutting part 26, retainer be set, also can on abutting part 28, retainer be set.

In addition, in above-mentioned example, resilient clamp portion 18 is made of 2 resilient

clamp sheet portions

22,24 and the

abutting part

26,28 that is provided with respectively above it, but the number that constitutes the resilient clamp sheet portion of resilient clamp portion is not limited to 2, also can be more than 3.If increased number, then the contact site with lead-in wire increases, and therefore can realize more reliably being electrically connected.In addition, no matter how many numbers is, resilient clamp sheet portion all preferably uniformly-spaced is set on the circumferencial direction of main part.

(variation 1)

Fig. 6 is the figure of variation of the power supply terminal 2 of expression the 1st embodiment.Wherein, in Fig. 6,, and omit its explanation at the identical symbol of component part mark identical with above-mentioned power supply terminal 2.

(1) in the power supply terminal 2 of Fig. 3,

flexure strip portion

22,24 is made into straight plate shape, and the

flexure strip portion

32,34 shown in Fig. 6 (a) then is the example that adopts curved shape.

(2) shown in Fig. 6 (b) being the variation of abutting part, is the figure that sees from tube axial direction observation post under the state that power supply terminal is attached on the cold-cathode fluorescence lamp.Compare with above-mentioned abutting part 26,28 (Fig. 2, Fig. 3), the shape of cross section difference, the shape of cross section of the

abutting part

36,38 shown in Fig. 6 (b) has adopted the shape of illustrated example.Thus, even ligament (outside lead) also can be guaranteed the shape as abutting part.

(variation 2)

Fig. 7 is the figure of variation of the power supply terminal 2 of expression the 1st embodiment.Fig. 7 (a), Fig. 7 (c) are the figure that sees from tube axial direction observation post under the state that power supply terminal is attached on the cold-cathode fluorescence lamp.Fig. 7 (b) is the stereogram of the head portion of the power supply terminal 2 shown in Fig. 7 (a), and Fig. 7 (d) is the stereogram of the head portion of the power supply terminal 2 shown in Fig. 7 (c).Wherein, in Fig. 7,, and omit its explanation at the identical symbol of component part mark identical with above-mentioned power supply terminal 2.

Power supply terminal shown in Figure 72 adopts all is that abutting part is crimped on structure on the lead-in wire, is electrically connected so that guarantee more reliably.

Abutting part 40,42 shown in Fig. 7 (a), Fig. 7 (b) is examples that two abutting parts adopt different shape of cross sections.In addition, by with abutting part 40 not with lead-in wire 10 contacted parts to the direction of arrow crimping shown in Fig. 7 (b), realizes more reliable electrical connection, and has also realized preventing going between in mechanical aspects and come off.

Abutting part the 44, the 46th shown in Fig. 7 (c), Fig. 7 (d), the example of the asymmetric shape of cross section in the employing left and right sides.In addition, by with abutting part 44,46 not with lead-in wire 10 contacted parts to the direction of arrow crimping shown in Fig. 7 (d), realizes more reliable electrical connection, and has also realized preventing going between in mechanical aspects and come off.

(the 2nd embodiment)

Fig. 8 represents the power supply terminal 48,53 of the 2nd embodiment.The power supply terminal 48,53 of the 2nd embodiment is compared with the 1st embodiment, the structure difference of its resilient clamp portion.Wherein, in Fig. 8,, and omit its explanation at the identical symbol of component part mark identical with above-mentioned power supply terminal 2.

Power supply terminal 48 shown in Fig. 8 (a) have from the barrel of main part 16 parallel with its central shaft 16A extend out, and bend rectangular rectangular linking part 50 halfway and be arranged on resilient clamp portion 52 on the elongated end of linking part 50.The a pair of flexure strip 52B of portion, 52C that resilient clamp portion 52 has pedestal part 52A and extend to be provided with from pedestal part 52A, wherein pedestal part 52A is the square plate-shaped member with central shaft 16A quadrature.

The 52B of each flexure strip portion, 52C are made on the pedestal part 52 rectangle that limit portion in opposite directions extends towards main part 16 1 sides.The 52B of flexure strip portion, 52C bend to " ㄑ " word shape towards inboard (towards central shaft 16A), and between the top of this bend, resilient clamp lead-in wire 10 (Fig. 1, Fig. 2).In addition, in this example, pedestal part 52A performance and above-mentioned retainer 30 (Fig. 5) identical functions.

In the power supply terminal 48 that constitutes by said structure, outside lead 10B forms point with the 52B of flexure strip portion, 52C and contacts, therefore, even main part 16 is a little to glass container 6 (Fig. 1) run-off the straight, outside lead 10B also can escape between described top effectively, is not easy to apply excessive power to outside lead 10B.

In addition, because resilient clamp portion 52 is very outstanding with insertion and the disengaging performance of lead-in wire 10B, therefore improved the loading and unloading property of power supply terminal 48 on glass container 6.

The resilient clamp portion 54 of the power supply terminal 53 shown in Fig. 8 (b) adopts the 52 essentially identical structures with above-mentioned resilient clamp portion.That is, constitute by extending a pair of flexure strip 54B of portion, the 54C that are provided with from pedestal part 54A.It is characterized in that, comprise linking part 56, extend a ribbon portion that is provided with from main part 16 and form through bending machining at the assigned position of its length direction interior.Therefore, in the power supply terminal 53, can constitute resilient clamp portion 54 self, can realize lightweight on the whole with less material.

In addition, the 10B that externally goes between is inserted among the resilient clamp portion 54 on this point easily, and is identical with resilient clamp portion 52 (Fig. 8 (a)).On the other hand, outside lead 10B forms and be difficult to the structure extracted from resilient clamp portion 54.When attempting outside lead 10B extracted from resilient clamp portion 54, linking part 56 can (towards central shaft 16A) deflections to the inside.Consequently, the 54C of flexure strip portion moves similarly to the inside, and 10B pushes to outside lead, and the frictional force between 54C of flexure strip portion and the outside lead 10B will increase.Thus, in case power supply terminal 53 does not just need the occasion dismantled after being suitable for being attached on the glass container 6.

In addition, also be by pedestal part 54A performance and above-mentioned retainer 30 (Fig. 5) identical functions in this example.

(the 3rd embodiment)

Fig. 9 represents the power supply terminal 58 of the 3rd embodiment.The power supply terminal of the 3rd embodiment is compared with the 1st embodiment, and the structure of its resilient clamp portion is also different.Among each figure of Fig. 9 (a)～(d), what the right side was described only is the right side view of resilient clamp portion.Wherein, in Fig. 9, also mark identical symbol at the component part identical, and omit its explanation with above-mentioned power supply terminal 2.

Abutting

part

60,64 shown in Fig. 9 (a), Fig. 9 (b) all has circular-arc cross section.The example that is set to parallel shape extends from the two ends of circular arc to terminal in

resilient clamp portion

60,64 in resilient clamp portion be from the two ends of circular arc to terminal mutually away from the example of curved shape.

Resilient clamp portion

60,64 is connected to main part 16 by linking

part

62,66 respectively.

Resilient clamp portion

68,72 shown in Fig. 9 (c), Fig. 9 (d) adopts is that the mid portion that integral body is the cross section of " コ " word shape is expanded to circular-arc structure.

The example that is set to parallel shape extends from the two ends of circular arc to terminal in

resilient clamp portion

68,72 in resilient clamp portion be from the two ends of circular arc to terminal mutually away from the example of curved shape.

Resilient clamp portion

68,72 is connected to main part 16 by linking part 70,74 respectively.

In addition, the arc radius of circular-arc part is set at the radius of go between 10 (outside lead 10B) equates, thereby inserting under 10 the state of going between, the circular-arc part inner surface of

resilient clamp portion

60,64,68,72 is contacted with the outer surface formation face of lead-in wire 10.In addition, not inserting under the state of lead-in wire 10 as yet, make circular-arc part plastic deformation, on the whole purse up.Thus, insert after the lead-in wire 10, strains take place in

resilient clamp portion

60,64,68,72, expand to the radial outside of lead-in wire 10, utilize its restoring force 10 to carry out clamping to going between.

(the 4th embodiment)

Figure 10 represents the power supply terminal 80 of the 4th embodiment.Figure 10 (a) expression power supply terminal 80 is attached to the state front view down after the end of cold-cathode fluorescence lamp 4, and Figure 10 (b) represents the right side view under the same state.

The structure of the main part 16 of the power supply terminal 2 of the main part of power supply terminal 80 and the 1st embodiment is basic identical, therefore marks identical symbol, and omits its explanation.

Resilient clamp portion 82 is by a pair of

flexure strip portion

84,86 and extend the

abutting part

88,90 that is provided with from

flexure strip portion

84,86 respectively and constitute.

A pair of

flexure strip portion

84,86 has constituted circular cone body 96, and it has from main part 16 and extends 2

slits

92,94 on the tube axial direction that is provided with, is opened in glass container 6.

The outer surface of circular cone body 96 is provided with taper thread 98.

In addition, power supply terminal 80 has the collar nut 100 that combines with taper thread 98 screw threads.

Be extrapolated under the state on the cold-cathode fluorescence lamp 4 (outside lead 10B being inserted into the state between the abutting part 88,90) at the power supply terminal 80 that will constitute by said structure, after tightening collar nut 100,

flexure strip portion

84,86 integral body will be out of shape to the inside, and two abutting

parts

88,90 contact with outside lead 10B.And then, by tightening collar nut 100, two abutting

parts

88,90 are pushed to outside lead 10B, thus clamping outside lead 10B.

In addition, also can adopt under the state that does not make collar nut 100 screw thread combinations as yet, the elastic restoring force of

flexure strip portion

84,86 is played a role, the structure that outside lead 10B is clamped perhaps also can adopt the structure that just begins outside lead 10B is carried out clamping under the state that makes the combination of collar nut 100 screw threads and screw.

In addition, adopted the circular cone body with 2 slits in above-mentioned example, but the slot number of being offered being not limited to 2, also can be more than 3.

And then, also can form the slit that links to each other with formed slit on the circular cone body in main part one side.For example, in Figure 10 (a), also can offer in the position in opposite directions of the barrel of main part 16 a pair of shown in the single-point line such slit 102 (another slit be can't see in this view).Thus, the confining force of 16 pairs of glass containers 6 of main part also can be adjusted by the degree of tightening of collar nut 100.This advantageous particularly in the cold-cathode fluorescence lamp of the different multiple size in the aperture that power supply terminal 80 is applied to glass container 6 time.

(the 5th embodiment)

Figure 11 represents the power supply terminal 110 of the 5th embodiment.The power supply terminal 110 of the 5th embodiment is compared with the 1st embodiment, the structure difference of its main part.Wherein, in Figure 11,, and omit its explanation at the identical symbol of component part mark identical with above-mentioned power supply terminal 2.

The structure that the main part 112 of power supply terminal 110 adopts is, end from cylinder, equally spaced offer many (being 6 in this example) reach prescribed depth on described central axis direction slit 114 in a circumferential direction along its central shaft, never an end offering the cylinder body 116 of slit 114 (slit 114 fails to arrive) thus begins, and extends many (being 6 in this example) rectangular flexure strips 118 are set.

Each flexure strip 118 is to be basic point near the base end part of cylinder body 116 1 sides, and integral body bends to the inside, and then near free end, the part is " ㄑ " oxbow to the inside.Why bending to " ㄑ " font in this manner, is that the angle on the top of flexure strip 118 can not scratch glass container 6 for when being extrapolated to power supply terminal 110 on the cold-cathode fluorescence lamp, and inserts easily.

Here, the diameter with the virtual cylinder that connects in outstanding each top, the inboard at above-mentioned " ㄑ " of each flexure strip 118 oxbow position (glass container 6 surperficial sides) is set at shorter than the external diameter of glass container 6.

Figure 12 is before expression power supply terminal 110 is attached on the cold-cathode fluorescence lamp 4 and the figure of state afterwards.

To be extrapolated to by the power supply terminal 110 that said structure constitutes after the end of cold-cathode fluorescence lamp 4, the top of " ㄑ " word of each flexure strip 118 will abut to the periphery of glass container 6,118 of whole flexure strips are basic point with described base end part, to the radial outside elastic deflection (strain) of glass container 6, keep glass container 6 by its restoring force.Thus, glass container 6 will with the roughly consistent state in the axle center of cylinder body 116 under be positioned in the main part 112.In addition, need not superfluous words, the shape of flexure strip 118 (slit 114), number, allocation position etc. are not limited to aforesaid way.Generally speaking, so long as can in main part 112, the structure of elastic bearing glass container 6 get final product.

(the 6th embodiment)

Figure 13 represents the power supply terminal 160 of the 6th embodiment.Figure 13 (a) and Figure 13 (b) represent the front view and the right side view of power supply terminal 160 respectively.

The structure of the main part 16 of the power supply terminal 2 of the main part of power supply terminal 160 and the 1st embodiment is basic identical, therefore marks identical symbol, and omits its explanation.

Through die-cut the forming of stamping-out processing, its peripheral position engages with the end of main part 16 by laser weld etc. by rubber-like circular metal plate (for example corrosion resistant plate) in the resilient clamp portion 162 on the main part 16 of being arranged on.

The middle body of resilient clamp portion 162 in the form of annular discs is die-cut into the shape shown in Figure 13 (b), has a plurality of (in this example be 3)

tongue piece

162A, 162B, the 162C outstanding towards its center of circle.The top ends of

tongue piece

162A, 162B, 162C (free end) has stamping-out and blocks the sharp-pointed section that forms.In addition, need not give unnecessary details,

tongue piece

162A, 162B, 162C are flexure strips.

The diameter d 2 of the imaginary circles of joining with the top ends of each

tongue piece

162A, 162B, 162C is set at littler than the diameter d 1 of outside lead 10B.

Figure 13 (c) is expression embeds power supply terminal 160 state on the cold-cathode fluorescence lamp 2 that is attached to from main part 160 1 sides a front view.What wherein, described among Figure 13 (c) is at the cutaway view that is equivalent to after the B-B line position place shown in Figure 13 (b) is blocked with resilient clamp portion 162.

After main part 160 1 sides were embedded on the cold-cathode fluorescence lamp 2,

tongue piece

162A, 162B, 162C were the basic point deflection with its base end part just with power supply terminal 160, utilized its restoring force from 3 directions outside lead 10B to be kept.In addition, the top ends of

tongue piece

162A, 162B, 162C, promptly the part with outside lead 10B butt is sharp-pointed limit, so this top ends can be trapped in the outer peripheral face of outside lead 10B.

Tongue piece

162A, 162B, 162C are trapped in the outer peripheral face of outside lead 10B, and the contact area of abutting part and outside lead 10B increases, and meanwhile, can prevent the oxidation of this contact site, therefore can improve the reliability of electrical connection.

In addition, need not give unnecessary details, the number and the shape of tongue piece (flexure strip) are not limited to aforesaid way.

(the 7th embodiment)

Figure 14 represents the power supply terminal 180 of the 7th embodiment.Figure 14 (a) and Figure 14 (b) represent the front view and the right side view of power supply terminal 180 respectively.

The structure of the main part 16 of the power supply terminal 2 of the main part of power supply terminal 180 and the 1st embodiment is basic identical, therefore marks identical symbol, and omits its explanation.

Be arranged on the main part 16 resilient clamp portion 162 by circular metal plate (for example, the spring steel plate) forms the tazza shape through stamping-out processing, its punched cutting in bottom makes the regulation shape, and its bottom periphery position engages with the end of main part 16 by laser weld etc.Resilient clamp portion 162 is the parts that are called as so-called tapping nut (tapping nut), adopts the structure that has a pair of tooth 182A of portion, 182B outstanding in opposite directions on the bottom.Being set at apart from d3 in opposite directions between the 182A of tooth portion, the 182B shown in Figure 14 (b) is shorter than the external diameter of outside lead 10B.

The power supply terminal 180 that will constitute by said structure according to mode shown in Figure 14 (c) from main part 160 1 sides in the direction of arrow C while rotate embed cold-cathode fluorescence lamp 2 after, utilize the 182A of tooth portion, 182B externally to go between and form screw thread on the outer peripheral face of 10B.In addition, the 182A of tooth portion, 182B can be that some deflections take place basic point with its base end part, utilize its restoring force that outside lead 10B is kept.The 182A of tooth portion, 182B top ends can be absorbed in the formed thread groove, therefore, the contact area of the 182A of tooth portion, 182B top ends and outside lead 10B increases, meanwhile, this contact portion generation oxidation can be prevented, thereby the reliability of electrical connection can be improved.

In addition, even attempt the power supply terminal 160 (Figure 13) of the 6th embodiment is pulled up from cold-cathode fluorescence lamp 2,, therefore be difficult to pull up and owing to

tongue piece

162A, 162B, 162C are trapped among the outside lead 10B.But,, therefore can utilize once more as long as the power supply terminal 180 of the 7th embodiment promptly can be taken off along the arrow C rightabout rotation of Figure 14 (c).

(the 8th embodiment)

Figure 15 is the stereogram of the schematic configuration of the expression direct backlight unit 300 that has cold-cathode fluorescence lamp 4 in the light source.In addition, Figure 15 blocks the figure that forms afterwards with diffusing panel 308 described later, diffusion disk 310 and lens 312.

The outer cover 306 that back light unit 300 has rectangular reflecting plate 302 and is made of the side plate 304 that surrounds reflecting plate 302.Reflecting plate 302 and side plate 304 all are to have formed the reflectance coating (not shown) that AM aluminum metallization etc. forms on a first type surface of the sheet material that is made of PET (PETG) resin (becoming inboard face when being assembled into outer cover 306).

In described outer cover 306, depositing a plurality of (being 8 in this example) cold-cathode fluorescence lamp 4 as light source, they are parallel with the long limit of described reflecting plate 302, and are spaced in that short side direction is first-class.

In addition, the opening of described outer cover 306 is provided with diffusing panel 308, diffusion disk 310 and lens 312.

With reference to Figure 16 the installation constitution of cold-cathode fluorescence lamp 4 on outer cover 306 in the back light unit 300 is described.Wherein, used the power supply terminal 2 of the 1st embodiment in the illustrated example, comprised variation any one power supply terminal in the 2nd～the 5th embodiment of interior other but also can use.

Erect the connector 314 that is provided with formation as described below at reflecting plate 302 upper surfaces, that is, metallic plate that be made of for example phosphor bronze, elastic forms through bending machining.Be embedded in the pairing connector 314 by main part 16, just can cold-cathode fluorescence lamp 4 be installed on the outer cover 306 with one touch type with the power supply terminal 2 of attaching on cold-cathode fluorescence lamp 4 two ends.Thus, power supply terminal 2 is electrically connected with connector 314, just flows to cold-cathode fluorescence lamp 4 via connector 314 and power supply terminal 2 from the electric energy of not shown lighting circuit.

(problem and solution thereof when the cold-cathode fluorescence lamp that attaching is had power supply terminal is installed on the back light unit)

(1) as long as the main part 16 of power supply terminal 2 peristome from connector 314 is embedded into, just can realize the attaching of cold-cathode fluorescence lamp 4, therefore, cold-cathode fluorescence lamp 4 might depart from its tube axial direction.In addition, for example, if cold-cathode fluorescence lamp comprises the glass container that has oval cross section, then the installation direction around the tubular axis will become problem.This be because, under the situation of oval cross section, from back light unit, discharge effectively in order to make light, preferably, its long diameter or short diameter are parallel with reflecting plate 302, if but misplace on every side at tubular axis, then the release efficiency of light will descend.

Figure 17, Figure 18 are the figure of expression power supply terminal 120 and connector 130, and power supply terminal 120 and connector 130 have adopted the structure that can prevent tube axial direction and tubular axis dislocation on every side when being installed to cold-cathode fluorescence lamp 4 on the connector.Wherein, to the identical symbol of component parts mark identical in fact in the power supply terminal 120, and omit its explanation with the power supply terminal 2 (Fig. 2, Fig. 3) of the 1st embodiment.

Offer connecting hole 124 on the barrel of the main part 122 of power supply terminal 110.

Connector 130 has and above-mentioned connector 214 essentially identical structures.That is, connector 130 is to be processed through stamping-out by the elongated sheet material (phosphor bronze sheet) that phosphor bronze constitutes, its by have a circular arc portion a pair of in opposite

directions holding piece

130A, 130B and the linking part 130C that both link up constituted.In addition, the circular-arc portion of a side holding piece 130A is provided with outstanding to the inside engaging protrusion 130D.In addition, preferably, the thickness of the barrel of the height that engaging protrusion 130D begins from circular-arc inner surface and the main part 122 of power supply terminal 124 is roughly the same.

With regard to the power supply terminal 120 and connector 130 that constitute by said structure, as long as, just can prevent that cold-cathode fluorescence lamp 4 from misplacing around tube axial direction and tubular axis with respect to connector 130 so that connecting hole 124 is embedded into power supply terminal 120 in the connector 130 with the mode that engaging protrusion 130D is fastened togather.

(2) the main part periphery of so far illustrated power supply terminal is barrel surface on the whole, therefore, with attaching the cold-cathode fluorescence lamp of this power supply terminal be arranged in when installing on the smooth operating desk, on back light unit, will occur on operating desk, rolling easily, unworkable problem.

Figure 19 is the figure of expression power supply terminal 140, also is not easy the structure of rolling on the tabular surface even this power supply terminal 140 has to place.Wherein, in Figure 19,, and omit its explanation at the identical symbol of component part mark identical with above-mentioned power supply terminal 120 (Figure 17, Figure 18).

In the power supply terminal 140, a part of outer peripheral face of main part 142 forms tabular surface 144.In this manner, by tabular surface 144 is set on main part 142, the cold-cathode fluorescence lamp that has this power supply terminal becomes on tabular surface and is not easy to roll.In addition, in this case, preferably, adjust the setting angle (angle around the tubular axis) of two power supply terminals 140, two tabular surfaces 144 of the power supply terminal 140 at the both ends that are arranged on cold-cathode fluorescence lamp 4 are positioned on the same plane.

Express the structure of preferred connector 150 under the situation that has adopted power supply terminal 140 with said structure in the bottom of Figure 19.Wherein, in Figure 19,, and omit its explanation at the identical symbol of component part mark identical with above-mentioned power supply terminal 130 (Figure 17, Figure 18).

A holding piece 152 in the connector 150 is provided with the par 152A that the tabular surface 144 with above-mentioned power supply terminal 140 adapts.In addition, as shown in figure 20, as long as, just can prevent that cold-cathode fluorescence lamp 4 from misplacing on around the tubular axis with respect to connector 130 so that the mode that tabular surface 144 engages with par 152A is embedded into power supply terminal 140 in the connector 130.

(3) at the power supply terminal 2 (Fig. 3) of the 1st embodiment, the power supply terminal of the 2nd embodiment (Fig. 8), the power supply terminal of the 3rd embodiment (Fig. 9), the power supply terminal 80 (Figure 10) of the 4th embodiment, power supply terminal 110 (Figure 11 of the 5th embodiment, Figure 12), resilient clamp portion (for example resilient clamp portion 18 in the power supply terminal 2 of the 1st embodiment) all highlights from main part 16, therefore, when carrying out to operations such as back light unit installations, this protuberance branch impact operations platform or other cold-cathode fluorescence lamps, causing supporting go between 10 glass container 6 parts will damage.

Figure 21 is the figure that expression has the power supply terminal 190 of the structure that can deal with this problem.Wherein, to the identical symbol of component parts mark identical in fact in the power supply terminal 190, and omit its explanation with the power supply terminal 2 (Fig. 2, Fig. 3) of the 1st embodiment.

The structure that power supply terminal 190 adopts is, extends protection portion 192,194 between the

flexure strip

22,24 of main part 16 ends, and this protection portion 192,194 is from surrounding outside lead 10B with the direction of tubular axis quadrature.

Like this, by the protection portion 192,194 that surrounds outside lead 10B is set, just can protect outside lead 10B to make it avoid the external force damage as much as possible.

In addition, what adopt in above-mentioned example is the mode of extending protection portion 192,194 from main part 16, separates with main part 16 and it is engaged mode into one with main part 16 but also can adopt protection portion is made into.Figure 22 has represented to adopt the power supply terminal 196 of this structure.

Wherein, component parts identical in fact with the power supply terminal 2 (Fig. 2, Fig. 3) of the 1st embodiment in the power supply terminal 196 is also marked identical symbol, and omit its explanation.

Power supply terminal 196 has further increased protection member 198 in the structure of the power supply terminal 2 of the 1st embodiment.

Protection member 198 is cylindric, and an end sections is extrapolated on the main part 16, and is joined together with main part 16 by laser weld etc.Like this, by the protection member 198 that surrounds outside lead 10B is set, just can protect outside lead 10B to make it avoid the external force damage as much as possible.

In addition, further adopt following structure, can prevent that cold-cathode fluorescence lamp 4 from misplacing around tubular axis with respect to connector.

An end of protection member 198 is provided with notch part 198A, the 198B shown in the illustrated example.

On the other hand, connector 200 is provided with engaging

protrusion

130E, 130F, is used for engaging with

notch part

198A, 198B when embedding power supply terminal 196.In addition, in socket shown in Figure 22 200, for the identical symbol of socket shown in Figure 17 130 essentially identical component parts marks, and omit its explanation.

Engaging protrusion

130E, 130F are arranged on from linking part 130C and begin to extend the end sections that the extension that is provided with is provided with the 130D of portion along tube axial direction.

In addition, also can adopt connecting hole (not shown) to replace notch part 198A, 198B.In addition, engaging

protrusion

130E, 130F also can be arranged with the connector branch.And then the number of

notch part

198A, 198B and connecting hole is not limited to 2, also can be 1.Perhaps also can be more than 3.The number of engaging protrusion suitably changes according to the number of notch part and connecting hole and gets final product.

(the 9th embodiment)

Figure 23 represents the summary of the liquid crystal indicator 320 of the 9th embodiment.Liquid crystal indicator 320 is 32[inches for example] liquid crystal TV set, as shown in figure 23, it possesses: the liquid crystal panel unit 322, the back light unit 300 that is configured in 322 back sides, liquid crystal panel unit and the lighting circuit 324 that comprise liquid crystal panel etc.

Liquid crystal panel unit 322 is known equipment, and it possesses (not shown) such as liquid crystal panel (filter substrate, liquid crystal, TFT substrate etc.) (not shown), driver modules, forms coloured image based on the picture signal from the outside.

Lighting circuit 324 is lighted the cold-cathode fluorescence lamp 4 (Figure 15, Figure 16) of back light unit 300 inside.In addition, cold-cathode fluorescence lamp 4 is with 40[kHz]～100[kHz] ignition frequency, 4[mA]～18[mA] lamp current work.

More than describe the present invention based on embodiment, but the present invention is not limited to above-mentioned embodiment certainly, also can adopt for example following embodiment.

(1) in the above-described embodiment, use cold-cathode fluorescence lamp to be illustrated as example, but the present invention is not limited to fluorescent lamp, also can be applied to cold cathode uv lamp as cold-cathode discharge lamp.That is, remove fluorescent membrane (not forming fluorescent membrane) from the structure of the cold-cathode fluorescence lamp of above-mentioned embodiment, form cold cathode uv lamp, the present invention also can be applied in this structure.Ultraviolet lamp is used for to the shone thing irradiation ultraviolet radiation this shone thing being carried out sterilization etc.

(2) in the above-described embodiment, only depend on the elastic restoring force realization of elasticity clamping part in the power supply terminal and being electrically connected of lead-in wire (outside lead), but, also lead-in wire (outside lead) and abutting part can be joined together by modes such as laser weld or electric resistance welding, arc weldings in order to ensure switching performance more reliably.

(3) at above-mentioned the 1st～the 5th embodiment (among Fig. 1～Figure 12), by 1 metallic plate is carried out the power supply terminal that the stamping-out processing and fabricating goes out main part and resilient clamp integrally, but also can be for example after producing main part and resilient clamp portion respectively separately, main part and resilient clamp portion are joined together, thereby both are integrated.

(4) about glass container

The employed glass of glass container also can have following constituent, that is: SiO after being converted into oxide ₂Be 60[wt%]～75[wt%], Al ₂O ₃Be 1[wt%]～5[wt%], Li ₂O is 0[wt%]～5[wt%], K ₂O is 3[wt%]～11[wt%], Na ₂O is 3[wt%]～12[wt%], CaO is 0[wt%]～9[wt%], MgO is 0[wt%]～9[wt%], SrO is 0[wt%]～12[wt%], BaO is 0[wt%]～12[wt%].In this case, it does not contain lead composition, can provide the cold-cathode fluorescence lamp that benefits the protection environment.And then preferably, the employed glass of glass container has following constituent after being converted into oxide, that is: SiO ₂Be 60[wt%]～75[wt%], Al ₂O ₃Be 1[wt%]～5[wt%], B ₂O ₃Be 0[wt%]～3[wt%], Li ₂O is 0[wt%]～5[wt%], K ₂O is 3[wt%]～11[wt%], Na ₂O is 3[wt%]～12[wt%], CaO is 0[wt%]～9[wt%], MgO is 0[wt%]～9[wt%], SrO is 0[wt%]～12[wt%], BaO is 0[wt%]～12[wt%].

In addition, the employed glass of glass container also can have following constituent, that is: SiO after being converted into oxide ₂Be 60[wt%]～75[wt%], Al ₂O ₃Be 1[wt%]～5[wt%], Li ₂O is 0.5[wt%]～5[wt%], K ₂O is 3[wt%]～7[wt%], Na ₂O is 5[wt%]～12[wt%], CaO is 1[wt%]～7[wt%], MgO is 1[wt%]～7[wt%], SrO is 0[wt%]～5[wt%], BaO is 7[wt%]～12[wt%].

In this case, easily lamp is processed, and it does not contain lead composition, can provide the cold-cathode fluorescence lamp that benefits the protection environment.

And then the employed glass of glass container also can have following constituent, that is: SiO after being converted into oxide ₂Be 65[wt%]～75[wt%], Al ₂O ₃Be 1[wt%]～5[wt%], B ₂O ₃Be 0[wt%]～3[wt%], Li ₂O is 0.5[wt%]～5[wt%], K ₂O is 3[wt%]～7[wt%], Na ₂O is 5[wt%]～12[wt%], CaO is 2[wt%]～7[wt%], MgO is 2.1[wt%]～7[wt%], SrO is 0[wt%]～0.9[wt%], BaO is 7.1[wt%]～12[wt%].In this case, it does not contain lead composition, has the electrical insulating property that is suitable for lighting use, and is not easy to cause devitrification.And then, being more preferably, the employed glass of glass container has following constituent after being converted into oxide, that is: SiO ₂Be 65[wt%]～75[wt%], Al ₂O ₃Be 1[wt%]～3[wt%], B ₂O ₃Be 0[wt%]～3[wt%], Li ₂O is 1[wt%]～3[wt%], K ₂O is 3[wt%]～6[wt%], Na ₂O is 7[wt%]～10[wt%], CaO is 3[wt%]～6[wt%], MgO is 3[wt%]～6[wt%], SrO is 0[wt%]～0.9[wt%], BaO is 7.1[wt%]～10[wt%].

(5) about the fluorophor of luminescent coating

(5-1) about ultraviolet radiation absorption

For example, in recent years, be accompanied by the maximization of lcd tv, bring into use the high Merlon of dimensional stability in the diffusing panel of the opening of obstruction back light unit.This Merlon is at 313[nm that mercury sends] the ultraviolet ray irradiation of wavelength wears out down easily.In this case, use can absorbing wavelength be 313[nm] ultraviolet fluorophor better.In addition, can absorbing wavelength be 313[nm] ultraviolet fluorophor have following several.

(a) blueness

The barium Sr, Mg, Al hydrochlorate [Ba that europium is manganese activated _1-x-ySr _xEu _yMg _1-zMn _zAl ₁₀O ₁₇] or [Ba _1-x-ySr _xEu _yMg _2-zMn _zAl ₁₆O ₂₇].

Here, x, y, the z number of 0≤x≤0.4,0.07≤y≤0.25,0≤z＜0.1 that preferably satisfies condition respectively.

This fluorophor is for example europkium-activated barium magnesium aluminate [BaMg ₂Al ₁₆O ₂₇: Eu ²⁺], [BaMgAl ₁₀O ₁₇: Eu ²⁺] (abbreviate as: BAM-B) or europkium-activated barium Sr, Mg, Al hydrochlorate [(Ba, Sr) Mg ₂Al ₁₆O ₂₇: Eu ²⁺], [(Ba, Sr) MgAl ₁₀O ₁₇: Eu ²⁺] (abbreviate as: SBAM-B) etc.

(b) green

Manganese un-activation gallium acid magnesium [MgGa ₂O ₄: Mn ²⁺] (abbreviate as: MGM)

Manganese activated cerium magnesium zinc aluminate [Ce (Mg, Zn) Al ₁₁O ₁₉: Mn ²⁺] (abbreviate as: CMZ)

Cerium Mg aluminate [the CeMgAl that terbium activates ₁₁O ₁₉: Tb ³⁺] (abbreviate as: CAT)

The barium Sr, Mg, Al hydrochlorate [Ba that europium is manganese activated _1-x-ySr _xEu _yMg _1-zMn _zAl ₁₀O ₁₇] or [Ba _1-x-ySr _xEu _yMg _2-zMn _zAl ₁₆O ₂₇]

Here, x, y, z are the numbers of 0≤x≤0.4,0.07≤y≤0.25,0.1≤z≤0.6 of satisfying condition respectively, and z is 0.4≤x≤0.5 preferably.

This fluorophor is the manganese activated barium magnesium aluminate [BaMg of europium for example ₂Al ₁₆O ₂₇: Eu ²⁺, Mn ²⁺], [BaMgAl ₁₀O ₁₇: Eu ²⁺, Mn ²⁺] (abbreviate as: BAM-G) or manganese activated barium Sr, Mg, Al hydrochlorate [(Ba, Sr) Mg of europium ₂Al ₁₆O ₂₇: Eu ²⁺, Mn ²⁺], [(Ba, Sr) MgAl ₁₀O ₁₇: Eu ²⁺, Mn ²⁺] (abbreviate as: SBAM-G) etc.

(c) redness

Europkium-activated phosphorus vanadate iridium [Y (P, V) O ₄: Eu ³⁺] (abbreviate as: YPV)

Europium activates vanadate iridium [YVO ₄: Eu ³⁺] (abbreviate as: YVO)

Europkium-activated second sulfone (Yttrium Oxysulfide) [Y ₂O ₂S:Eu ³⁺] (abbreviate as: YOS)

Manganese activated fluogermanic acid magnesium [3.5MgO0.5MgF ₂GeO ₂: Mn ⁴⁺] (abbreviate as: MFG)

The yttrium vanadic acid YVO of activated by dysprosium ₄: Dy ³⁺] (red and green these two kinds of composition light-emitting fluophors abbreviate as: YDS)

In addition, at a kind of glow color, also can mix the fluorophor that uses different compounds.For example, also can be that blueness is only used BAM-B (absorb 313[nm]) fluorophor, the green LAP of use (do not absorb 313[nm]) and BAM-G (absorb 313[nm]) fluorophor, the red YOX of use (do not absorb 313[nm]) and YVO (absorption 313[nm]) fluorophor.In this case, will absorb 313[nm according to mode as mentioned above] fluorophor be adjusted in the gross weight proportion of composing greater than 50%, just can prevent substantially that ultraviolet leakage is outside glass bulb.Therefore, absorb 313[nm when comprising in the luminescent coating 105] the situation of ultraviolet fluorophor under, diffusing panel opening, that be made of Merlon (PC) etc. that can suppress to be used to stop up above-mentioned back light unit wears out because of the ultraviolet ray irradiation, can keep the characteristic as back light unit for a long time.

Here, so-called " absorb 313[nm] ultraviolet ray " is defined as, with 254[nm] near the excitation wavelength frequency spectrum (the excitation wavelength frequency spectrum refers to while making wavelength change activating fluorescent body luminous, and the frequency spectrum of mapping excitation wavelength and luminous intensity gained) intensity is defined as 100[%] time, 313[nm] the intensity of excitation wavelength frequency spectrum more than or equal to 80[%].That is, absorb 313[nm] ultraviolet fluorophor refer to can absorb 313[nm] ultraviolet ray and it is transformed to the fluorophor of visible light.

(5-2) about high color reproduction

Be in the liquid crystal indicator of representative with the lcd tv, be accompanied by the high color reproductionization of encircling as one of high image qualityization in recent years and advancing, requirement enlarges its reproducible chromaticity range as the cold-cathode discharge lamp or the outer electrode discharge lamp of the light source of the back light unit of this liquid crystal indicator.

At this requirement, for example by using following fluorophor, compare with the situation of fluorophor in using embodiment, can further enlarge chromaticity range.

Particularly, in the CIE1931 chromatic diagram, be used for realizing that the chromaticity coordinate value of this fluorophor of high color reproduction is positioned at: comprised the triangle that links the chromaticity coordinate value of employed 3 fluorophor of embodiment and form and the coordinate of extension color reproduction range.

(a) blueness

Europkium-activated strontium chlorapatite [Sr ₁₀(PO ₄) ₆Cl ₂: Eu ²⁺] (abbreviate as: SCA), chromaticity coordinate: x=0.151, y=0.065

Except that above-mentioned, also can use europium activate strontium calcium barium chlorapatite [(Sr, Ca, Ba) ₁₀(PO ₄) ₆Cl ₂: Eu ²⁺] (abbreviate as: SBCA), above-mentioned can absorbing wavelength be that the ultraviolet SBAM-B of 313 (nm) also can be used for high color reproduction.

(b) green

BAM-G, chromaticity coordinate: x=0.139, y=0.574

CMZ, chromaticity coordinate: x=0.164, y=0.722

CAT, chromaticity coordinate: x=0.267, y=0.663

In addition, as mentioned above, these fluorophor also can absorbing wavelength is 313[nm] ultraviolet ray, in addition, except 3 kinds of fluorophor particles described herein, MGM also can be used for high color reproduction.

(c) redness

YOS, chromaticity coordinate: x=0.651, y=0.344

YPV, chromaticity coordinate: x=0.658, y=0.333

MFG, chromaticity coordinate: x=0.711, y=0.287

In addition, as mentioned above, these fluorophor also can absorbing wavelength is 313[nm] ultraviolet ray, in addition, except 3 kinds of fluorophor particles described herein, YVO, YDS also can be used for high color reproduction.

In addition, chromaticity coordinate value shown in above-mentioned is a typical value of only measuring gained with the coccoid of each fluorophor, because of the difference of assay method (measuring principle) etc., the chromaticity coordinate value that coccoid showed of each fluorophor has some differences with above-mentioned open value sometimes.As a reference, the chromaticity coordinate value of the coccoid of each fluorophor of above-mentioned the 1st embodiment is made of YOX (x=0.644, y=0.353), LAP (x=0.351, y=0.585), BAM-B (x=0.148, y=0.056).

And then the fluorophor that uses in order to send each coloured light of red, green, blue is not limited to a kind with regard to each wavelength, but can be used in combination multiple fluorophor.

Here, the situation at the fluorophor particle formation luminescent coating that uses above-mentioned high color reproduction to use is illustrated.Here estimate in such a way, that is: the area of the NTSC triangle (NTSC triangle) that forms with the chromaticity coordinate value of 3 primary colors that link the TSC-system formula in the CIE1931 chromatic diagram is a benchmark, obtains the ratio (comparing hereinafter referred to as NTSC) that links leg-of-mutton area that 3 chromaticity coordinate values form and this benchmark when the fluorophor that uses high color reproduction to use.

For example, if the blue BAM-B of use, the green BAM-G of use, the red YVO (example 1) that uses, then NTSC is than being 92[%], if and blueness is used SCA, the green BAM-G of use, red use YVO (example 2), then NTSC is than being 100[%], if blueness is used SCA, the green BAM-G of use, red use YOX (example 3) in addition, then NTSC is than being 95[%], compare with example 2 with example 1, brightness can improve 10[%].

In addition, employed chromaticity coordinate value is a numerical value of measuring gained under employing is equipped with the state of liquid crystal indicator of lamp etc. when estimating here, therefore, may cause the color reproduction scope to change up and down at above-mentioned numerical value with the various combination of colour filter.

Industrial applicibility

Power supply terminal of the present invention is fit to be applied to be installed in the power supply terminal on the cold-cathode fluorescence lamp end, and this cold-cathode fluorescence lamp for example uses as the light source of the back light unit that consists of liquid crystal indicator.

Claims

1. power supply terminal is installed in the end of cold-cathode discharge lamp, and this cold-cathode discharge lamp has the glass container of tubulose and is sealed in the end of this glass container and the lead-in wire that extends outwardly along tube axial direction, wherein, has:

Main part is inserted in outward on the end periphery of described glass container; And

Resilient clamp portion is arranged on the described main part, utilizes this lead-in wire of elastic restoring force clamping under the state that has inserted described lead-in wire.

2. power supply terminal as claimed in claim 1, wherein,

Described resilient clamp portion comprises: extends at least 2 flexure strip portions that are provided with and is arranged on each top ends of these flexure strip portions and the abutting part that connects with the periphery of described lead-in wire from described main part,

Under the state before described lead-in wire inserts, described abutting part and butt described lead-in wire position are present in the position than the more close radially inner side of virtual outer peripheral face of this lead-in wire.

3. power supply terminal as claimed in claim 1, wherein,

Described main part is cylindric,

Described resilient clamp portion comprises: extends from described main part and is provided with and has the circular cone body of at least 2 slits that are opened on the described tube axial direction and be arranged on the top of this circular cone body and the abutting part that connects with the outer peripheral face of described lead-in wire,

A part of outer surface of circular cone body is provided with taper thread,

Described power supply terminal further has the collar nut that combines with described taper thread screw thread.

4. as claim 2 or 3 described power supply terminals, wherein

Described butt position in the described abutting part forms and the matched shape of the outer peripheral face that goes between, and carries out face with this lead-in wire periphery and contact.

5. as any described power supply terminal of claim 2 to 4, wherein,

Inserted under the state of described lead-in wire in described resilient clamp portion, utilized described elastic restoring force, described abutting part is with 100[gf at least] above pressing force pushes described lead-in wire.

6. cold-cathode discharge lamp that has power supply terminal,

Have the glass container of tubulose and be sealed in the end of this glass container and the lead-in wire that extends outwardly along tube axial direction, in the attaching of the end of glass container power supply terminal is arranged, wherein

Described power supply terminal is any described power supply terminal of claim 1 to 5,

Described main part is inserted in outward on the end periphery of described glass container, and described lead-in wire is inserted in the described resilient clamp portion.

7. back light unit, wherein,

Has the described cold-cathode discharge lamp of power supply terminal that has of claim 6 as light source.

8. liquid crystal indicator wherein, possesses:

LCDs; And

Be configured in the back light unit as claimed in claim 7 on the described LCDs back side.