TW200949892A - Cold cathode fluorescent lamp, backlight unit, and liquid crystal display device - Google Patents

Abstract

Provided is a cold cathode fluorescent lamp including: a glass bulb (10); a hollow electrode (20) set inside the both end portions of the glass bulb (10); and a power feed terminal (30) arranged outside the both end portions of the glass bulb (10) and connected to a lead line (22) of the hollow electrode (20). The power feed terminal (30) has a conductive tube (31) arranged in abutment with the external circumferential surface of the glass bulb (10). The tube (31) is not in contact with any external circumferential area (e) of the glass bulb (10) opposing to the lead line (22) at least in the glass bulb (10). Thus, the lamp can easily be installed and can have a long service life with a sufficient lamp luminance.

Description

200949892 VI. Description of the Invention: [Technical Area of the Invention] The present invention relates to a cold cathode fluorescent lamp, a backlight unit, and a liquid crystal display device. In particular, the present invention relates to a light bulb disposed in a glass bulb. A cold cathode fluorescent lamp or the like for a power supply terminal on the outer peripheral surface of the end portion. BACKGROUND OF THE INVENTION As shown in Figs. 41 and 42, conventional cold cathode fluorescent lamps 600 and 700 10 are provided with cap-shaped power supply on both ends of glass bulbs 〇1, 701. Terminals 602, 702. The cold cathode fluorescent lamp 6 shown in Fig. 41 is provided in a state in which the wire 604 connected to the rod electrode 603 is folded back along the end of the tubular glass bulb 6〇丨, and the end portion is provided with A low melting point glass 15 602a covering the wire 6〇4, and a metal die surrounding the soft metal 6〇21) between the outer surface of the end portion 601a of the glass bulb 601 including the low melting point glass 602a The power supply terminal 8〇2 constituted by 602c (Patent Document 〇. Further, the cold cathode fluorescent lamp 7 shown in Fig. 42 is provided with a cylindrical body 7 attached to the outer peripheral surface of the end portion of the glass bulb 701. 〇2a, a strip-shaped lead-out portion 702c extending from the outer side in the axial direction of the cylindrical body 7〇2a from the one end 702b of the cylindrical body 7〇2& and a connecting portion 7〇2d formed by bending from the front end of the lead-out portion 702c The power supply terminal 702 is configured. Further, the wire 704 extending from the end of the glass bulb 701 is disposed in the through hole of the connection portion 7〇2d, and the through hole and the wire 704 are melted by the solder 705. In addition, the bead 7〇6 system protruding from the inner side in the radial direction of the body 7〇2a of the forming cylinder 3 200949892 It is held in the end portion 7〇7 of the glass bulb 7〇1 in a state of being in contact with the outer surface of the glass bulb 7 (Patent Document 2). The power supply terminal 8 is constructed as shown in Fig. 41 and Fig. 42. 2, 7〇2 is electrically connected to the electrodes 703 and 7〇4 of the electrodes 703. Therefore, if the ends of the cold cathode fluorescent lamps 600 and 700 are embedded in the socket of the lighting device such as the backlight unit ( (not shown), cold cathode fluorescent lamps 6〇〇, 7〇〇 are fixed to the lighting device, and the cold cathode fluorescent lamps 6〇〇, 7〇〇 and the lighting circuit of the lighting device are electrically Therefore, when the cold cathode fluorescent lamps 6〇〇 and 7〇〇10 are mounted on the lighting device, the solder wires of the wires 604 and 704 are not required, and the cooling is not provided to the power terminals 802 and 702. In the case of the cathode fluorescent lamp, the invention is easy to install. [Patent Document 1] Japanese Laid-Open Patent Publication No. Hei. No. Hei. The problem is in the cold cathode fluorescent lamp 600 having the power supply terminal 802 shown in Fig. 41. For the purpose of life, it is desirable to use a hollow electrode in which the ore-depleting substance 20 does not easily adhere to the inner surface of the glass bulb 601. However, if a hollow electrode is used, there is a problem that the brightness of the lamp is lowered. The reason is as follows. In the case of a rod shape, as shown by the arrow in Fig. 41, since the entire system generates an electric discharge on the outer surface of the electrode body 605, a part of the discharge system of 200949892 is wound around the side of the wire 604, so that the wire 604 is heated in the vicinity thereof. Therefore, even if the power supply terminal 802 joined to the wire 604 functions as a heat sink for lowering the temperature of the wire 604, the temperature of the wire 604 and its vicinity does not fall too much. 5 However, in the case of using a hollow electrode, since the discharge on the side of the wire 604 is less, the heating of the wire 604 and the vicinity thereof due to the discharge is reduced, and the heat is radiated by the power terminal 802. The temperature of the wire 604 and its vicinity is lowered too much. As a result, a large amount of mercury vapor is accumulated around the wire 604, and there is a case where the mercury vapor of the discharge circuit is insufficient, the brightness of the lamp 10 is lowered, and the brightness of the lamp is increased. On the other hand, 'in the cold cathode fluorescent lamp 700 provided with the power supply terminal 702 shown in Fig. 42, 'Because the power supply terminal 702 is attached, the bead 706 formed in the cylindrical body 702a is at least and the glass bulb 7 is attached. The inner wire 704 is in contact with a part of the entire outer peripheral surface of the glass bulb 701, so that the temperature of the surface of the glass bulb 7〇1 which is in contact with the glass bulb is lowered, and a large amount of mercury vapor is collected around the contact portion and the wire 704. However, there is a case where the mercury vapor of the discharge circuit is not sufficient, the brightness of the lamp is lowered, and the brightness of the lamp is increased. In particular, in the case where the glass bulb 701 is made of a soda glass material, the mercury gas system accumulated in the contact portion and the sodium on the inner surface of the glass bulb 7〇1 are inversely reflected in the glass bulb 701. An amalgam is formed on the surface, and as a result, the mercury vapor in the glass bulb is insufficient, and the brightness of the lamp is further lowered. The present invention has been made in view of the above problems, and has an object of providing a cold cathode fluorescent lamp having a simple mounting life and a long service life and having sufficient lamp brightness. Means for Solving the Problem 5 200949892 The above-mentioned problem is solved. The patent of the present invention is characterized in that it has a glass bulb, a sub-glass lamp, a (four) inner side (four) empty electrode of the package, and a setting. On the outside of the imaginary ten-end portion, the wire of the hollow electrode is read = sub-------the outer surface of the glass bulb, the spot 1 is electrically conductive, and the cylindrical system is at least The wires in the glass bulb are opposite to each other in the entire outer peripheral surface of the glass bulb, and are eight-level non-contact persons.冷本(4) Shen (4) (4) The cold-cathed headlights required by the two items (4) The cylindrical (4) silk tents are empty (4) and the outer peripheral surfaces of the glass bulbs are closely bonded together. In the cold cathode camping lamp of the third aspect of the invention, the cylindrical system has a second cylindrical portion and a second tubular portion extending from the cylindrical portion in the axial direction of the cylindrical body. In the tubular portion, the outer diameter 5 of the second tubular portion is larger than the outer diameter of the first tubular portion. A cold cathode discharge lamp as claimed in claim 4 of the present invention: - the cylindrical system has an i-th tube portion, and one pair of the tube portions extending from the axial direction of the cylindrical body In the second tubular portion, the outer diameters of the pair of second tubular portions are larger than the outer diameter of the first tubular portion. In the cold cathode illuminating lamp of the fifth aspect of the invention, the cylindrical body has a slit portion in the axial direction thereof and has a substantially c-shaped cross section. In the cold cathode fluorescent lamp of the present invention, which is required by the sixth item, in the cold cathode fluorescent lamp of the sixth aspect, the portion of the power supply terminal of the scale is opposite to the end edge of the 200949892. The slit portions are joined to each other by a pair of joint portions. In the cold cathode fluorescent lamp of the seventh aspect of the invention, the one of the cylindrical bodies forms a concave portion on the edge of the end portion 5 opposite to the slit portion, and the other is A convex portion is formed on the end edge. In the cold cathode fluorescent lamp of the eighth aspect of the invention, the cylindrical system has a chamfered or octagonal shape at least in the axial direction of the end side of the lead wire and the opposite side. In the cold cathode fluorescent lamp of the ninth aspect of the invention, the cylindrical 10-shaped system has a plurality of elastic tongues disposed along the circumferential direction, thereby holding the plurality of elastic tongues and holding The glass bulb is outside the perimeter. In the cold cathode fluorescent lamp of claim 10, the front end portion of the elastic tongue is enlarged in a shape of a bar. In the cold cathode fluorescent lamp of claim 11, the 15 cylindrical system is formed by winding a spiral metal material. In the cold cathode fluorescent lamp of claim 12, the cylindrical system is formed by a linear or strip-shaped elastic material in close contact with the axial direction of the cylindrical body. In the cold cathode fluorescent lamp of claim 13, the 20-tube system is a conductive film formed of solder or a main component of copper or silver on the outer peripheral surface of the glass bulb, and the conductive film. A thin metal formed between them. In the cold cathode fluorescent lamp of claim 14, the non-contact portion of the outer peripheral surface of the glass bulb of the cylindrical body does not form the conductive conductor. In the cold cathode fluorescent lamp of the patent __, one part of the inner surface is in contact with the outer peripheral surface of the glass bulb. ^本发(4) The fourth section of the cold cathode (four) lamp system has its inner surface protruding from the inner side of the radial direction, and the outer surface of the glass bulb opposite to the glass household package will be the outer area of the bulb (four). In the support structure cut by the bulb, the one part 10 15 is in the cold cathode fluorescent lamp of the 17th item of the invention, and the part of the cylinder is partially folded and f The bend is pressed against the outer surface of the glass bulb. In the cold cathode glory lamp of claim 18 of the present invention, the 1 ^ wave member system extends from the _ end side of the cylindrical body to the other end side, and at the same time, the end end side is folded in the _ The shape of the upper Wei strip. In the cold cathode fluorescent lamp of claim 19, the member of the structure is partially bent, and the portion 77 of the bend is pressed against the outer periphery of the glass bulb. The surface is composed of a plurality of positioning pins protruding from the outer peripheral side of the glass bulb formed on the inner surface of the cylindrical body. In the cold cathode fluorescent lamp of claim 20, the wire has a seal which is larger in external control than a portion sealed to the glass member/package portion. In the filling portion, at least one P of the sealing portion is formed of a nickel material, an iron material or a mineral nickel. In the cold cathode fluorescent lamp of claim 21 of the present invention, the 200949892 wire is connected to (4) (4), the outer wire formed by the iron material and connected to the power supply terminal, and the material of the wire of the material portion. The junction formed by the inner conductor joined to the empty electrode of the towel has a sealing portion larger than the outer diameter of the wire.

In the cold cathode fluorescent lamp of claim 22, the sealing portion is in the end portion of the glass bulb, closely attached to the bottom surface thereof, or is closely connected to the bottom surface thereof and has a nuclear gap in the material line. And buried. In the cold cathode glory lamp of the twenty-third aspect of the invention, the sealing portion is provided with a gap between the end portion of the glass bulb. In the cold cathode fluorescent lamp of claim 24 of the present invention, the slit system is 0.1 mm to 0.5 mm. In the cold cathode discharge lamp of claim 25 of the present invention, the cross section of the section perpendicular to the axis of the wire is rounded, and the size is the largest diameter = the largest The diameter is large, but it is formed by the recorded material, iron material or mineral record in the cold cathode glory lamp of the largest foreign patent application of the glass bulb in the first part of the patent application, and the power supply terminal = empty electrode The bonded, wire-bonded two:: the upper has a larger sealing portion than the wire on the outer #, and the thermal conductivity of the wire of the ^# line is small. The X 4 guide is formed in the cold-stained wire of the correcting material and the material formed by the recording material, the iron material or the plating, and the wire, and the material different from the outer wire, and the hollow electrode The inner conductor of the joint is joined by a wire having a line diameter smaller than that of the inner wire, and the thermal conductivity of the outer wire is smaller than the thermal conductivity of the inner wire. In the cold cathode fluorescent lamp of claim 28, the surface roughness of the portion of the five wires sealed to the glass bulb is 0.2 Ra to 0.8 Ra. In the cold cathode fluorescent lamp of claim 29, one end of the wire is welded and fixed to the hollow electrode, and the surface of the one end portion is 0.2 Ra to 0.8 Ra, and the chamfer size is radial. The length is 0.08 10 mm to 0.15 mm and the length in the axial direction is 0.1 mm to 0.25 mm. In the cold cathode fluorescent lamp of claim 30, the power supply terminal is provided with a connection portion extending from the cylindrical body to the axial direction of the cylindrical body and connected to a part of the wire. . In the cold cathode fluorescent lamp of claim 31, the cylindrical system of the 15th electric terminal is externally inserted into the outer periphery of the end portion of the glass bulb, and the electric terminal is provided with the cylindrical shape. A strip-shaped lead-out portion extending outward from one end of the cylindrical body in the axial direction, and a connecting portion provided at a front end portion of the lead-out portion and connected to one of the wires. In the cold cathode fluorescent lamp of the 32nd aspect of the invention, the heat transfer rate of the 20 joint portion is greater than the heat transfer rate of the wire. In the cold cathode fluorescent lamp of claim 33, the heat transfer rate of the connection portion of the cylindrical body is 75 W/(m · K) to 435 W / (m · K), and is electrically conductive. The rate is 9xl06 S/m ~ 65xl06 S/m. In the cold cathode fluorescent lamp of claim 34, the 10 200949892 connecting portion forms a u-shaped portion in such a manner as to approach an outer peripheral surface of a portion of the wire, and a portion of the u-shaped portion is caulked into Connected to the wire. In the cold cathode fluorescent lamp of claim 35, the connecting portion is formed into a cylindrical portion in such a manner as to surround the outer peripheral surface of one of the wires, and a portion of the tubular portion is filled. The gap is connected to the wire. In the cold cathode fluorescent lamp of claim 36, the connecting portion is formed by bending from the front end of the lead portion so as to hold the outer peripheral surface of one of the wires. In the cold cathode fluorescent lamp of claim 37, the 10 connecting portion has a pair of holding pieces for holding the outer peripheral surface of the wire, and the pair of holding pieces are pressed against the wire. At least 100 g or more, while holding the wire and connecting. In the cold cathode fluorescent lamp of claim 38, the connecting portion bends a portion beyond the leading end of the lead 15 in such a manner as to contact one end surface of the lead wire. Former. In the cold cathode fluorescent lamp of claim 39, the ® connecting portion is formed by bending a portion beyond the front end of the lead portion so as to contact an outer peripheral surface of one of the wires. In the cold cathode fluorescent lamp of claim 40, the 20-connecting portion has a connecting surface formed with a through hole or a cutting portion, and the wire is inserted into the through hole or the cutting portion to exceed the lead. The portion at the front end of the portion is formed by bending, and the wire is inserted into the through hole or the cutting portion, and the soft metal is interposed therebetween to be connected to the connecting surface and the wire. In the cold cathode fluorescent lamp of claim 41, the 11 200949892 5 10 wire has a larger sealing portion on the outer diameter than a portion sealed to the light bulb. The portion to the + portion of the sealing portion is formed of a nickel material, an iron material or a mineral nickel, and the connecting portion - the sub-system is in contact with the sealing portion. The wire of the cold cathode fluorescent lamp of the invention of claim 42 is an external wire formed of the recorded material, the iron material, and the external wire, and the external wire Different materials = and the internal conductors joined by the hollow electrodes have a sealing portion on the joint shape that is larger than the outer diameter of the inner conductor, and the connection: a part is in contact with the sealing portion . In the cold cathode glory lamp of the ninth aspect of the invention, the connecting portion is connected to the outer peripheral surface of the second portion of the wire by a (10) connection or a soft metal. 77

15 20 In the cold cathode glory lamp of claim 44 of the present invention, the content of the glass lamp and the bubble-like sodium oxide is in the range of 3 wt % to 2 G wt % = formed of a glass material.

In the cold cathode fluorescent lamp of the 45th aspect of the invention, the glass bulb is formed of a glass material having a sodium oxide content of 5 wt% to 2 G wt%. In the backlight unit of claim 46 of the present invention, a cold cathode fluorescent lamp as described in claim i of the patent application is incorporated as a light source. A liquid crystal display device according to the 47th aspect of the present invention is provided with a liquid crystal display panel and a backlight unit as described in claim 46 of the patent application, the backlight unit having a plurality of applications for receiving a plurality of applications. The external storage device of the cold cathode fluorescent lamp described in the first aspect of the invention is provided on the back surface of the liquid crystal display panel. INFLUENCE OF THE INVENTION 5 e 10 15 Ref. 20 The cold cathode type fluorescent lamp according to claim 1 of the present invention, wherein the cylindrical system of the power supply terminal is at least in the outer periphery of the glass bulb opposite to the wire in the glass bulb In the entire area of the surface, it is a substantially non-contact person, and the exothermic effect is small compared with the contact area of the cylindrical body. That is, since the temperature of the periphery of the wire is not easily lowered, the mercury vapor around the wire is not easily aggregated, so that the mercury vapor deficiency of the discharge circuit is not easily caused, and the brightness of the lamp of the cold cathode fluorescent lamp is lowered, or the lamp is light. The phenomenon that the brightness rises slowly. As a result, not only can it have a long service life, but also have sufficient lamp brightness. According to the cold cathode type fluorescent lamp of the second aspect of the invention, the inner surface of the cylindrical body is closely adhered to the outer peripheral surface of the glass bulb opposite to the hollow electrode, and the periphery of the hollow electrode is less likely to aggregate mercury. As a result, since the mercury vapor around the wire becomes less likely to aggregate, it is less likely that the mercury vapor of the discharge circuit is insufficient, and the brightness of the lamp of the cold cathode fluorescent lamp is lowered, or the brightness of the lamp is slowed down. phenomenon. According to the cold cathode fluorescent lamp of the third aspect of the invention, the second tubular portion having a larger outer diameter than the first tubular portion can be used, and the difference between the first tubular portion and the second tubular portion can be utilized. It is easy to determine the position of the tube axis direction of the lamp. The cold cathode type fluorescent lamp according to the fourth aspect of the present invention has a second cylindrical portion which is larger in outer diameter than the first cylindrical portion on both sides in the axial direction of the cylindrical portion of the first tubular portion. By using the difference between the first tubular portion and the second tubular portion, it is easy to determine the position of the tube axis direction of the lamp. Furthermore, since the offset toward the tube axis direction of the lamp after the position is determined can be controlled by the two directions in the tube axis direction by the difference between the two places, the surface of the first tube portion of the cylindrical body is not It is susceptible to damage. The cold cathode type fluorescent lamp according to the fifth aspect of the invention is characterized in that the cylindrical body of the electric terminal has a slit portion in the axial direction thereof, and the cross section is slightly C-shaped, and the dimensional tolerance of the glass bulb is different. It can be absorbed by the elastic force of the slightly C-shaped portion, and the feeding terminal can be held on the outer peripheral surface of the glass bulb. A cold cathode type fluorescent lamp according to claim 6 of the present invention, wherein a portion of one of the pair of end edges is opposed to each other at a portion of the slit portion, and is disposed to be engaged with each other across the slit portion One of the pair of engaging portions can stabilize the shape of the cylindrical body. A cold cathode type fluorescent lamp according to claim 7 of the present invention, wherein the concave portion formed on the edge of one of the opposite sides of the slit portion and the convex portion formed on the edge of the other one are The configuration of the pair of engaging portions can stabilize the cylindrical body and absorb the dimensional tolerance of the outer shape of the glass bulb. According to the cold cathode type fluorescent lamp of the eighth aspect of the invention, the inner side of the axial direction of the cylindrical body and the inner surface of the opposite side are formed into a 20-degree angle or a racquet shape, thereby suppressing the power supply. The surface of the glass bulb is damaged when the terminal is inserted into the glass bulb, and the power supply terminal can be easily attached to the glass bulb. According to the cold cathode type fluorescent lamp of the ninth aspect of the invention, the outer surface of the glass bulb is held by a plurality of elastic springs of 200949892 arranged in the circumferential direction of the cylindrical body of the electric terminal. The entire system outside the shape receives the load in an equal distribution, so that the glass bulb can be prevented from being broken. Further, since the adhesion between the inner surface of the cylindrical body and the outer peripheral surface of the glass bulb can be improved, after the feeding terminal is attached to the glass bulb, the feeding terminal can be prevented from moving toward the glass bulb in the tube axis 5 upward. ,square

According to the cold cathode type fluorescent lamp of the first aspect of the invention, the front end portion of the elastic tongue is expanded in a private manner, and the operation of attaching the electric terminal to the end portion of the glass bulb can be smoothly performed. "Cold-cathode type fluorescent lamp according to item 11 of the application of the present invention, 0 straw is made of a cylindrical system of a power supply terminal, and is wound into a spiral metal (4)", because the entire surface of the cylindrical body is The distribution of the load can be prevented by the load; ^, therefore, the rupture of the glass bulb can be prevented. Furthermore, since the adhesion between the inner surface of the cylindrical body and the outer surface of the glass bulb can be improved, after the power supply terminal is mounted on the glass bulb, the power supply terminal can be In the direction of the tube axis, the glass bulb is not easily moved. In addition, the cylindrical body can be easily attached to the end of the glass bulb, and the outer diameter of the tube of the different glass bulb can also be dealt with. The cold cathode type glory lamp of the first item is formed by linearly forming a cylindrical system which is wound into a spiral shape, and can be compared with the case where metal = 2 is processed. There is no material loss, and the material loss can be reduced by y ❿ and 'because the linear or strip-shaped elastic material is in close contact with the cylindrical body axis-direction', and thus the cylindrical shape is not easily broken. Patent application according to the present invention Range 13 The cold cathode type fluorescent lamp of the present invention is a simple power supply terminal formed by a tubular film formed by a conductive film such as impregnation and a cylindrical thin metal provided with a film interposed therebetween. The cold cathode for the construction of the cold cathode according to item 14 of the present invention is made by the non-contact_conductive film of the outer surface of the cylindrical body and the glass bulb, so that the amount of conduction_use is reduced = the portion formed is exothermic. According to the invention, the cold cathode type rongguang product of the fifteenth aspect of the invention, the dog system and the conventional cold cathode type fluorescein of the electric terminal are not provided. 10 The cold cathode according to claim 16 of the present invention The type of fluorescent material is supported by a support member that is pressed against the outer peripheral surface of the glass lamp, which is opposite to the wire in the glass bulb, so that the mercury vapor system around the wire becomes less likely to aggregate, and thus is not easy. The phenomenon that the mercury vapor of the cold cathode fluorescent lamp is lowered due to insufficient mercury vapor in the discharge circuit, or the brightness of the lamp 15 rises slowly. According to the 17th item of the present invention. In the cathode type fluorescent lamp, the support member formed by bending a part of the cylindrical body is pressed against the outer peripheral surface of the glass bulb, and the cylindrical body can be attached to the cylindrical body by elastic deformation with little change in the pressing force. The cold cathode type fluorescent lamp according to claim 18 of the present invention is extended from the end side of one of the cylindrical bodies by the end portion of the cylindrical bulb. On the other end side, at the same time, the plurality of strips formed on the side of the glass bulb are bent from the one end side, so that the cylindrical body can be easily attached to the end of the glass bulb, and the different glass bulbs can be dealt with 200949892. The outer diameter of the tube of 15 ❹ 20. The cold cathode 第 according to claim 19 of the present invention is composed of a support member such that the portion of the cylindrical body: the first lamp, the pin, can be framed by one sheet metal. 1 composition, and can reduce the number of parts. For example, in comparison with the glass bulb, the 'glass field M (four) multiple & pin and the outer surface of the bulb is kept at a distance of 1 from the outer surface of the bulb," can flexibly support the building. The cold cathode type luminaire 2 of the range 20 = part of the wire of the electrical terminal junction portion is formed by a ferromagnetic material or a mineral deposit, for example, the solder is connected, and the power supply terminal can be surely connected. The cold cathode type glory according to claim 21 of the present invention is characterized in that the wire is bonded to an external wire formed of a material different from the inner wire of the sealing portion; The connection is 2: the outer conductor of the eight-figure β-wire is connected to the power supply terminal on the outside, and the external conductor (4) is easy to be soldered, and since the connection area can be enlarged, the connection terminal can be made. According to the 22nd aspect of the present invention, in the end portion of the bulb, the bottom surface of the close-sealing sealing portion is sealed with the bottom surface of the π and has a slit (4) in the radial direction of the wire. prevent □ The leakage of the wire seal of the glass lamp & is leaked. That is, 'in the end of the glass bulb', in the case where the bottom surface of the sealing part is in close contact, the external impact of the added wire can be suppressed, and In the case where the bottom surface of the sealing portion has a slit in the radial direction, the sealing portion is not buried in the end portion of the glass bulb, so that the heat of the sealing portion when the solder is impregnated can be prevented. Damage to the end of the glass bulb caused by the expansion. According to the cold cathode type fluorescent lamp of claim 23 of the present invention, by setting the simple part at the end of the sealing portion and the slope (5), the wire and the power supply are provided. When the current is increased at the time of fusion bonding of the terminals, even if the sealing portion of the wire generates heat, thermal stress is not applied to the end portion of the glass bulb without thermal expansion of the sealing portion of the S1. As a result, the end portion of the glass bulb can be prevented from being damaged and prevented. According to the cold cathode type headlight lamp of the 24th item of this Shenyue patent range, the gap is 〇.lmm~G.5mm, for example, even if the wire is previously impregnated with solder, due to the gap Part of the wire* will The tin-attachment can prevent the breakage of the end of the broken bulb to prevent the occurrence of leakage. * The cold cathode type fluorescent lamp according to claim 25 of the present invention is rounded by a cross section perpendicular to the center of the wire The shape of the seal has the largest U dimension than the maximum outer diameter of the wire. When it is opposite to the external blade of the wire, it is absorbed by the ends of the bell glass bulb. Therefore, it is possible to prevent the broken glass of the glass sealed by the wire from being smashed. In addition, the maximum diameter of the sealing portion is more likely to cause interference than the glass. When the lamp is installed, the sealing portion is not allowed. In the cold-cathode type fluorescent lamp of the patent range, the external wire length of the connected part of the sub-section is easy to be soldered and soldered, and the second one and the second product are enlarged, so that the connection with the power supply terminal can be made to the electric terminal (four) line. The heat transfer rate is smaller than the internal wire, 13 tin (38GC) or material (melting point: 1455). When the external conductor is bonded to Θ ❹ 18 200949892, the end of the glass bulb is prevented from being damaged due to the thermal conduction from the external conductor to the internal conductor. The cold cathode type glory lamp according to claim 27 of the present invention, 5 ❹ 10 15 θ 20 is a wire which is bonded to an external wire connected to the (four) wire and the power supply terminal, and the wire diameter of the outer wire is compared with the inner wire The line is thin, because even if the vibration is generated to the electrical terminal, it can be absorbed by the small external wire, so that the end of the broken glass bulb can be prevented from being damaged. Furthermore, the thermal conductivity of the external conductor is smaller than the thermal conductivity of the internal conductor, and the thermal conductivity of the external conductor to the internal conductor is easily corrected, thereby preventing the glass bulb end from being damaged. According to the cold cathode type fluorescent lamp of claim 28 of the present invention, since the surface roughness of the glass bulb portion sealed to the wire is 〜0.8 Ra, even if the connection portion of the electric terminal or the hollow electrode is provided with the wire & Vibration is generated, and the strength of the sealing portion of the wire sealed to the glass bulb portion is high (16% to 40% strength is improved compared with 0.1 Ra or less), and the glass bulb end is damaged. Further, since the strength of the sealing portion of the wire is high, peeling of the wire on the sealing portion of the glass bulb can be prevented. As a result, leakage can be prevented. According to the cold cathode type fluorescent lamp of claim 29 of the present invention, since the surface of one end of the wire is 0.2 Ra to 0_8 Ra, and the length of the chamfered dimension is 0.08 mm to 15.15 mm, the axis The length of the direction is mm summer mm~0.25 mm, so the welding strength can be improved. That is, although one end surface of the wire is roughened by sandblasting, Barrel polishing, etc., by having the above-mentioned size, the surface of one end face of the wire can be suppressed from becoming small, and can be stably formed in the range of 〇2 19 200949892 〜 0.8 Ra. In the inside, the strength of the hollow electrode and the stability of the wire can be welded by resisting the impurity or the laser connection. According to the cold cathode type glory lamp of the third aspect of the invention, the electric terminal block is provided with a connecting portion which is connected to the outer side of the cylindrical body from the cylindrical body and is connected to the portion of the wire. The same material-body forms the number of W-piece parts and improves the shape accuracy of the power supply terminals. Therefore, it can be easily attached to the end of the glass bulb. According to the cold-cathode type headlight lamp of claim 31 of the present invention, 10 15 20 ❹ hunting is provided by a belt-shaped lead-out portion which has an outer side extending from the axial direction of the cylindrical body of the cylindrical body and is disposed at The connection portion connected to the four blades of the lead wire at the front end portion of the lead-out portion prevents the leakage of the glass bulb sealed by the wire due to the suppression of the band-shaped lead-out portion (four) from the wire applied to the wire. . According to the invention, the cold cathode type fluorescent lamp of the patent _ 攸 , : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 冷 冷 冷 冷 冷 冷 冷 冷 冷When the tubular body 2 is connected to the wire, 'the heat due to the splicing is mainly on the side of the cylindrical body', so that the damage of the glass bulb caused by the heat of (4) can be suppressed. With the cold cathode type fluorescent lamp of the 33rd patent range, the heat transfer rate of the connection portion is 7 ... /(m·K), and the conductivity is in the words of the beginning of the lotus, 'Xl0 to 65xl06S/m, It can be mentioned as the heat transfer rate of 75^^m part of the weldability and electrical connectivity. Furthermore, m · κ) ~ 435W / (m · K), and 20 200949892 conductivity is ~ holding material conductivity 429W /(mK), conductivity WJ silver (thermal conductivity / (mK), conductivity 59·6 χ m: steel (thermal conductivity 317W / (m · K), conductivity 45 2x1 () 6 gold (heat transfer 5 ❹ 15 20 Conductivity 237W/(mK), conductivity 3 m, Ming (heat transfer « + US/m), iron (埶 value = .2W"mK), conductivity - W 锦 (:: :fine / (.·κ), conductivity 14 increase = ::=: first, conductivity 18-), indium (heat: conductivity tens / (mK), conductivity 187xlo6s / m), etc. According to the scope of application of the present invention In the cold cathode type glory lamp of item 34, the portion of the U-shaped portion formed by the connecting portion in a manner close to the outer peripheral surface of the wire is caulked to be connected to the wire, and the U-shaped portion is caulked. In the guide = can be ^ ^ force, TM word and wire form a gift connection 're-can' can also be carried out Positioning of the position of the terminal in the axial direction of the glass bulb. The cold cathode type burnt lamp according to claim 35 of the present application is connected by the way that the connecting portion is surrounded by the outer peripheral surface of the wire. When the large and far cylindrical portions are caulked into the wire and connected to the wire, the gap between the wires and the wire can be suppressed, and the wire can be restrained from forming a stable electrical connection with the wire. Further, the glass is broken. Positioning of the bulb in the axial direction of the power supply terminal. τ is not applied to the wire before the lead-out portion by means of deleting the 36 fluorescent lamp and bending the outer peripheral surface of the one formed by the end bend The bending force of 21, 200949892 10 15 20 is a method of holding the outer circumferential surface of the wire in two or more right-angle directions of the axial center, and the formation of the other end from the lead-out portion can suppress the application to the wire. The bending force can be simply connected to the wire. As a result, the leakage caused by the breakage of the portion sealed by the broken mosquito wire can be prevented. #The cold cathode type camp according to the nth item of the patent application of the present invention Light, 2 pairs If the pressing force of the wire is i 〇〇 g or more and the guiding performance is supported, the f-force applied to the wire can be suppressed to form an electrical connection with the wire. The patent application scope according to the present invention In the cold cathode type fluorescent lamp of item %, the end face of the wire and the portion extending beyond the leading end of the lead-out portion are in surface contact, the bending force applied to the wire can be suppressed, and the glass can be made relative to the glass Lamp, positioning of the position of the power supply terminal in the axial direction. Due to the cold cathode type fluorescent lamp of item 39 of the fish hair month (9), the outer surface of the wire is connected to the outer surface of the wire, the connection of the car is used by the soft metal or the laser is melted (four) the wire is added (four). In particular, the position that can be easily carried out and the two members are clamped and welded to resist the splicing of the most position can be made with respect to the glass bulb, and the axial direction of the power supply terminal is due to the 40th item of the patent scope. In the cold cathode type fluorescent lamp, the metal is in the through hole or the cutting portion of the connection portion of the plate-like metal, and the bending of the flexible wire: the force portion and the wire are connected to each other, and the application to the guide connection can be suppressed. A can open 70% of the soft metal between the connection part and the wire, and can be compared with the glass bulb, the axis of the power supply terminal

22 200949892 Positioning of the directional position. By making the cold cathode type of the range of the connection portion 41, the connection is made.卩 — 部分 部分 部分 部分 部分 部分 部分 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线 导线One point of the connecting portion and the sealing portion of the wire form a "force" to form a stable electrical connection.

For the glass bulb, when the phase position of the position of the axial direction of the electric terminal is made of soft metal (4), it can be suppressed to the bend of the wire, and the part of the connection portion and the sealing portion of the wire are wide. , forming a stable electrical connection. According to the cold cathode type glory of the invention of claim 43, the connecting portion and the wire are further stabilized by connecting the outer peripheral surface of the wire by the connection portion or the (4) metal. It is an electrical connection. The cold cathode type burn lamp according to claim 44 of the present invention has a content of sodium oxide of 3 wt % to 20 wt by a glass bulb. /~ 1 / 〇 范 2〇 The surrounding glass material is formed to improve the dark start characteristics. Further, the dry cylindrical body is substantially non-contact in the outer periphery of the glass bulb relative to the wire in the glass bulb. 'Because the mercury vapor in the glass bulb surrounded by the entire outer peripheral surface is not It is easy to aggregate, and it can suppress the formation of amalgam which reacts with sodium (Na) dissolved in the inner surface of the glass bulb and mercury vapor (Hg) from 23 200949892, and can suppress the decrease in brightness of the fluorescent lamp. The cold cathode type fluorescent lamp according to claim 45 of the present invention is formed by using a glass bulb with a glass material having a sodium oxide content of 5 wt% or more and 20 wt% or less, thereby improving the dark start-up time. It is less than about 15 seconds. The backlight unit according to claim 46 of the present invention is provided with a cold cathode fluorescent lamp as described in claim 1 as a light source, except that the lamp is simple to install and has a long service life, High lamp brightness is obtained. According to the liquid crystal display device of claim 47 of the present invention, since the backlight unit as described in claim 46 is mounted on the back surface of the liquid crystal display panel, in addition to the long service life, a high lamp can be obtained at the same time. brightness. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially cutaway perspective view showing a cold cathode fluorescent lamp according to an embodiment of the present invention. Fig. 2 is an enlarged cross-sectional view showing the end of one of the cold cathode fluorescent lamps. Fig. 3 is a perspective view showing a cylindrical metal of a power supply terminal in a cold cathode fluorescent lamp. Fig. 4 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 1. Fig. 5 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 2. Fig. 6 is an enlarged view showing the end portion of one of the cold cathode fluorescent lamps of Modification 3. 24 200949892. Fig. 7 is a perspective view showing a film member constituting an electric terminal in the same cold cathode fluorescent lamp. Fig. 8 is a squint 5 Ο 10 15 -20 diagram showing the end of one of the cold cathode fluorescent lamps of Modification 4. Figure 9 is an enlarged cross-sectional view showing the end of one of the cold cathode fluorescent lamps. Fig. 10 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 5. Fig. 11 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 6. Fig. 12 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 7. Fig. 13 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 8. Fig. 14 is a perspective view showing a power supply terminal in the cold cathode fluorescent lamp of Modification 9. Fig. 15 is a perspective view showing a power supply terminal in the cold cathode fluorescent lamp of Modification 10. Fig. 16 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 11. Fig. 17 is a perspective view showing the cylindrical metal of the power supply terminal in the cold cathode fluorescent lamp. Fig. 18 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 12. 25 200949892 Fig. 19 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 13. Fig. 20 is a perspective view showing the cylindrical metal of the power supply terminal in the cold cathode fluorescent lamp. Fig. 21 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 14. Fig. 22 is a perspective view showing the end of one of the cold cathode fluorescent lamps of Modification 15. Fig. 23(a) and Fig. 23(b) are perspective views showing the tenth end of one of the cold cathode fluorescent lamps of the modified example 16. Fig. 24 is a perspective view showing the end of one of the cold cathode fluorescent lamps of Modification 17. Fig. 25 is a perspective view showing the power supply terminal of the cold cathode fluorescent lamp of Modification 18. 15 Fig. 26 shows the state before and after the installation of the cold cathode fluorescent lamp with the power supply terminal. Fig. 27 is an enlarged cross-sectional view showing the end of one of the cold cathode fluorescent lamps of Modification 19. Fig. 28 is a perspective view showing the end portion of one of the cold cathode fluorescent lamps of Modification 20. Fig. 29 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 20. Fig. 30 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 21. 200949892 Fig. 31 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 22. 32(a) to (c) are enlarged cross-sectional views showing a cold cathode fluorescent lamp for reviewing the heat radiation effect of the power supply terminal of the present invention. 5 Fig. 33 is an enlarged cross-sectional view showing a cold cathode fluorescent lamp for reviewing the correlation between the surface roughness Ra and the peeling strength N. Fig. 34 is a view for explaining a method of measuring the surface roughness Ra. Fig. 35 is a view for explaining a method of measuring the peeling occurrence strength N. Fig. 36 is a graph showing the results of measurement of surface roughness Ra and peeling strength N. Figure 37 is a graph showing the relationship between the surface roughness gauge & and the peeling occurrence strength N. Figure 38 is an exploded perspective view showing a schematic configuration of a backlight unit and the like according to an embodiment of the present invention. 15 Figure 39 is a diagram showing the installation state of a cold cathode fluorescent lamp. Figure 40 is a partially cutaway perspective view showing a liquid crystal display device according to an embodiment of the present invention. Figure 41 is an enlarged cross-sectional view showing one end portion of a conventional cold cathode discharge lamp with a power supply terminal. Figure 42 is an enlarged cross-sectional view showing the end of one of the conventional cold cathode discharge lamps to which the electric terminals are attached. t 真 -j The best mode for carrying out the invention (Description of cold cathode fluorescent iridium) 27 200949892 Hereinafter, a cold cathode fluorescent lamp according to Embodiment 1 of the present invention will be described with reference to the drawings. Fig. 1 is a partially cutaway perspective view showing a cold cathode fluorescent lamp according to a first embodiment of the present invention, and Fig. 2 is an enlarged cross-sectional view showing an end portion of a cold cathode fluorescent lamp. The cold cathode fluorescent lamp 1 is used as a light source of a backlight unit, which is provided with a glass bulb ίο, a hollow electrode 20 which is respectively disposed on the inner side of both end portions of the glass bulb 1 ,, and is disposed at both ends of the glass bulb 10 On the outer side, a power supply terminal 30 is connected to the wire 22 of the hollow electrode 20. 10 Glass bulb 10 is a glass tube processor made of borosilicate glass (Si02-B2〇3—A1203~K2〇-Ti02) with a total length of 730 mm. The glass bulb 10 is composed of a tubular glass bulb body 11 and a pair of sealing portions 12 positioned on both sides in the longitudinal direction of the glass bulb body 11. The glass bulb body 11 has a circular cross section with an outer diameter of 4 min, a 15 inner diameter of 3 mm, and a thickness of 0.5 mm. As shown in Fig. 2, the length w of the sealing portion 12 in the direction of the tube axis A of the glass bulb 10 is 2 mm, and the hollow electrode 2 is sealed. Further, the configuration of the glass bulb 10 is not limited to the above configuration. However, the reason why the cold cathode fluorescent lamp 1 is made elongated is that the glass bulb 10 is required to have a small diameter of 20 and a thin shape. Generally, the inner diameter of the glass bulb body 11 is 1.4 mm to 6.0 mm' and the thickness is 0.2 mm. ~0.5 mm is preferred. In addition to the both end portions of the glass bulb 10, a phosphor layer 13 is formed on the inner surface. In the present embodiment, as shown in Fig. 2, the end portion of the phosphor layer 13 is opposed to the outer peripheral surface of the electrode body 21 of the hollow electrode 20, and is disposed at the bottom portion 24 of the electrode body 21 and the power supply terminal at 28 200949892. At the position between the ends of the center side of the tube 30. By this configuration, it is possible to prevent direct leakage of ultraviolet rays from the glass bulb body: 3⁄4 leakage. 5 ❹ 10 15 20 For example, the phosphor layer 13 is composed of a red phosphor (y2〇3:Eu3+), a green phosphor (LaP〇4: CE3+, TB3+), and a cyan phosphor (BaMgzAlhO27: Eu2+). The rare earth-based phosphor is formed. Furthermore, 'in the interior of the glass bulb 1 ,, for example, about 12 水 called mercury, and 'about 8 kPa as a rare gas (20. 混合 〇 氖 and argon mixed system with Ne: 95 mol%, Ar: a ratio of 5 mol% is enclosed. The composition of the phosphor layer 13, mercury, and a rare gas is not limited to the above configuration. For example, niobium may also be contained in a rare gas. Infrared emission of fluorescent lamps. Further, in rare gases, it is preferable to contain yttrium in a range of 0.5 mol% or more and 5 mol% or less. At this time, the lamp voltage is not changed too much, and cold can be suppressed. Infrared radiation of a cathode fluorescent lamp, for example, 'argon is in the range of 9.5 mol% or more and 9.5 mol% or less, 氖 is in the range of 90 mol% or more and 95.5 mol% or less, and 氪 is 〇.5 mol. /. In the rare gas, it is more preferable to contain lanthanum in a range of 0.5 mol% or more and 3 mol% or less, and more preferably 1 mol% or more and 3 mol% or less in a rare gas. The range within the range is further better. Furthermore, although in the glass bulb 10 Boron phthalate glass is used in the material, however, it is not limited thereto. For example, sodium glass containing sodium oxide or the like may be used. In this case, in order to prevent the inner surface of the glass bulb 10 from between the phosphor layers 13, mercury and glass are used. The combination of sodium on the inner surface of the bulb 1 is used to set the protection. 2009 200989 892 is the best. Considering the processability or dark start characteristics of the modified glass, the glass bulb 1 has a sodium oxide content of 3 wt% or more. Preferably, the glass material is formed in the range of wt% or less. Then, if the content of the sodium oxide is further increased to 5 wt〇/〇 or more, the dark start time in the dark condition is changed to 5 to about 1 second or less. If the content of sodium oxide exceeds 2% by weight, 'when used for a long period of time, the glass bulb will be whitened to lower the brightness, and the strength of the glass bulb 10 itself will decrease. In addition, when considering environmental countermeasures' A glass material having a base metal content of 3 wt% or more and 2 wt% or less, and a glass content of not less than wt% (see "lead-free glass") is further improved. It is more preferable to use a glass material having a lead content of 0.01 wt% or less. Further, in terms of oxide, the glass material is 60% by weight to 755% by weight of SiO 2 and 1 wt% to 5 % by weight of Al 2 〇. 3, 0 wt% ~ 5 wt% of Li20, 3 wt% ~ 11 wt% of K20, 3 wt% ~ 12 wt% of Na20, 0 wt% ~ 9 wt% of CaO, 0 wt% ~ 9 wt% 15 The composition of MgO, 〇wt%~12 wt% SRO, 0 wt%~12 wt% BaO may also be used. At this time, since the lead component is not contained, an environmentally friendly cold cathode fluorescent lamp can be provided. Further, in terms of oxide, the glass material is 60 wt% to 75 wt% of Si〇2, 1 wt% to 5 wt% of A1203, 0 wt% to 3 wt% of B2〇3, 〇wt% ~5 wt% of Li2〇, 3 wt%~11 wt% of K20, 20 3 wt%~12 wt% of Na2〇, 〇wt%~9 wt% of CaO, 0 wt%~9 wt% of MgO, The composition of Owt%~12 wt% SRO, 〇wt%~12 wt% BaO is better. Furthermore, the conversion of the oxide material is 60% by weight to 755% by weight of SiO 2 , 1% by weight to 5 % by weight of Α12〇3 Ό·5 wt% to 5 wt% of Li20, 30 200949892 3 wt %2 to 7 wt% of K20, 5 wt% to 12 wt% of Na2〇, 1 wt% to 7 wt% of CaO, 1 wt% to 7 wt% of MgO, 0 wt% to 5 wt% of SRO, 7 The composition of BaO of wt% to 12 wt% is also acceptable. At this time, the lamp can be easily processed, and since the lead component is not contained, an environmentally friendly cold cathode fluorescent lamp can be provided. 5 e 10 15 ❹ 20 Further, in terms of oxide, the glass material is SiO2 having 65 wt% to 75 wt%, Al2〇3 of 1 wt% to 5 wt%, B2 of 0 wt% to 3 wt%. 〇3, 0·5 wt%~5 wt% of Li20, 3 wt%~7 wt% of K20, 5 wt%~12 wt% of Na2〇, 2 wt%~7 wt% of CaO, 2.1 wt%~ The composition of 7 wt% of MgO, 0 wt% to 0.9 wt% of SRO, and 7.1 wt% to 12 wt% of BaO may also be used. At this time, since the wrong component is not included, it has electrical insulation suitable for lighting use, and devitrification may not easily occur. Further, the glass material is converted into an oxide of 65 wt% to 75 wt%, 2 wt% to 3 wt% of Al2〇3, 0 wt% to 3 wt% of B2〇3, 1 in terms of oxide. Wt20 to 3 wt% of Li20, 3 wt% to 6 wt% of K20, 7 wt% to 10 wt% of Na20, 3 wt% to 6 wt0/〇 of CaO, 3 wt% to 6 wt% of MgO, The composition of Owt%~0.9 wt% SRO, 7.1 wt%~10 wt% BaO is more preferable. The hollow electrode 20 is composed of the electrode body 21 and the wire 22, and is sealed to the sealing portion 12 of the glass bulb 10. The electrode body 21 is made of nickel (Ni) and has a bottomed cylindrical shape composed of the tubular portion 23 and the bottom portion 24. Further, the electrode body 21 is not limited to nickel, and may be, for example, an iron-nickel alloy, niobium (Nb), tantalum (Ta), titanium (Ti), molybdenum (Mo), tungsten (W) or tantalum (Hf). ) made. The tubular portion 23 has a total length of 5.2 mm, an outer diameter of 2.7 mm, an inner diameter of 2.3 mm, and a thickness of 0.2 mm. The hollow electrode 20 is disposed in such a manner as to substantially coincide with the tube axis of the tubular portion 23 and the tube axis of the 31200949892 glass bulb, and the interval between the outer peripheral surface of the tubular portion 23 and the inner surface of the glass bulb 10 is on the entire outer circumference of the tubular portion 23. The system is roughly uniform. Furthermore, the length Μ is 10 mm. Specifically, the interval between the outer peripheral surface of the chirp portion 23 and the inner surface of the glass bulb 1 is such that if the interval is narrow, the discharge system does not enter the interval, and only discharge is generated inside the hollow electrode 20. Therefore, the sputtering material scattered by the discharge does not easily adhere to the inner surface of the glass bulb 10, and the cold cathode fluorescent lamp 1 can be used for a long life. On the other hand, since the discharge system does not wrap around the side of the wire 22, the wire 22 is not easily heated by the discharge. Further, the interval between the outer peripheral surface of the tubular portion 23 and the inner surface of the glass bulb 1 is not necessarily required to be 0.15 mm', and it is preferably 0.2 mm or less in order to prevent the discharge from being inserted into the interval. On the surface of the electrode body 21, an electron radioactive substance layer (not shown) may also be formed. At this time, the lamp voltage can be lowered as compared with the lamp 15 in which the electron radioactive material layer is not provided. Specifically, an electron radioactive material layer can be formed on, for example, the inner surface of the electrode. For example, the electron radioactive layer contains rare earth elements. This is because in the cold cathode fluorescent lamp, the lamp voltage can be effectively lowered. Further, the rare earth element is preferably one or more of lanthanum (La) and ytterbium (Y). 20 Electron radioactive material layer further comprising any of Shi Xi (Si), aluminum (A1), mal (Zr), boron (B), zinc (Zn), bismuth (Bi), phosphorus (P) and tin (Sn) One or more of them is preferable. At this time, it is possible to further reduce the lamp voltage. Further, in the electron radioactive material layer, a planer (Cs) 32 200949892 may also be contained. At this point, the dark start feature of the lamp can be further enhanced. Further, in addition to the electron radioactive material layer, the ruthenium compound may be attached to the inner surface or the outer surface of the electrode body 21. Further, it is preferable that the ruthenium compound is used, for example, by using a crushed aluminate planer, bismuth ruthenate ruthenium, a tungstic acid planer, a molybdenum acid planer, and a gasification. Further, it is more preferable that the ruthenium compound is attached to the U surface of the cylindrical portion of the electrode. At this time, in the manufacturing procedure of the cold cathode fluorescent lamp, η ° tends to moderately activate the ruthenium compound. Further, in the outer peripheral surface of the cylindrical portion 23 to which the electrode is attached, the front end portion on the central portion side of the lamp is more ❹

The wire 22 is a welded joint of a tungsten (W) internal lead 25 which is slightly different from the thermal expansion coefficient of the glass bulb 10, and a nickel external lead 26 which is easy to adhere to solder or the like as the inner lead 25 is thinned. The sealing portion 27 in the joint portion is smaller than the outer diameter of the glass bulb 1 but larger than the outer diameter of the inner guide 22, and is disposed in such a manner that the end faces of the glass bulb 10 are opposite to each other at 25 At the both ends of the glass bulb ίο and I5, the outer lead 26 and the sealing portion η are positioned further outside than the glass bulb. The outer surface is configured by the self-sealing portion 27 to the hollow portion 2 of the hollow electrode 2, and the size of the rex rabbit is a, ',, and is fixed, that is, opposite to the bottom of the hollow electrode 2 The gap on the inner surface of the bubble 10 (in the direction of the wire 22 in the glass bulb ίο = glass lamp 2 〇 glass bulb 10 in the entire outer circumference of the cylindrical body axis direction of the cylindrical direction: to about 1mm, can be lengthened effective The light-emitting length L. Further, the external dog is out. When P collides with the outside, since the force applied to the sealing portion 27 is absorbed by both end portions of the glass bulb 10, it is prevented from being sealed by the internal wire 25. Further, although the sealing portion 27 is formed of the same nickel material as the external lead 26, the sealing portion 27 is not limited thereto, and for example, Fe may be used. Ni alloy, Cu-Ni alloy, or steel-coated nickel steel wire material, etc. Further, the sealing portion 27 of the outer wire 26 is perpendicular to the axis of the wire 22 (cross section perpendicular to the pipe axis A) The 5 series is circular and has a maximum diameter ratio of the inner diameter of the inner wire 25 to be However, it is preferable that the outer diameter of the glass bulb 10 is smaller than the outer diameter of the glass bulb 10. However, the sealing portion 27 is not necessarily required. The inner conductor 25 has a substantially circular cross section, a total length of 3 mm, and a wire diameter of 0_8 mm. The end portion of the outer lead 26 side is sealed to the sealing portion 12' of the glass bulb 10, and the end portion on the side opposite to the side of the outer lead 26 is joined to the outer side of the outer side of the bottom portion 24 of the electrode body 21. 26 is a protruding portion protruding from the outer surface of the glass bulb 1 toward the tube axis A direction, and is engaged with the electric terminal 30. The outer length of the outer lead 26 is imm, and the axis of the outer lead 26 and the glass bulb The official axis A of the 丨〇-15 is approximately *. The length σ of the outer wire 26 in the direction of the tube axis A is preferably equal to or less than im. Further, the outer wire 26 has a slightly circular cross section and a wire diameter smaller than the inner wire. 25 ^ is 0.6 mm thin. If the length of the right outer wire 26 in the direction of the tube axis A (1 is 11] 1111 or less, the outer wire 26 is bent due to the collision of the outer wire 26 with 20, or the sealing portion 12 is broken. The situation is very small. For example, 'in the cold cathode fluorescent lamp 1 When the backlight unit 1000 shown in Fig. 38 is mounted, the external lead wire 26 is bent by colliding with the backlight unit 1000, or the sealing portion 12 is broken due to the stress applied to the external lead wire 26 at the time of collision. 34 200949892 For example, the power supply terminal 30 is provided so as to cover both end portions of the glass bulb 10. Specifically, it has a conductive cylindrical body that is provided to be in contact with the outer peripheral surface of the glass bulb 10 and is surrounded by 31. The cylindrical body 31 has at least a non-contact portion S (the non-contact portion of the conductive cylindrical body 31) at least in the outer peripheral surface 6' of the outer peripheral surface of the glass bulb 1〇5 facing the lead wire 22 in the glass bulb 10. )By. In other words, the cylindrical body 31 is formed of a film 32 having a length N (including the non-contact portion S) of 7.5 mm and a thickness of 50 μm formed on the outer peripheral surface of the glass bulb 10, and a cylindrical metal 33. The Φ film 32 is not formed on the entire outer peripheral surface ε of the glass bulb 10 opposite to the wire 22 in the glass bulb 10, and this portion becomes a non-contact S, compared with the contact area of the cylindrical body 31, The exothermic effect is small. As a result, since mercury vapor is not easily collected around the wire 22, the brightness of the lamp of the cold cathode fluorescent lamp is lowered due to insufficient mercury vapor, or the phenomenon that the brightness of the lamp - the temperature rises is not easily generated. 15 For example, the cylindrical metal 33 is formed of a thin metal member made of stainless steel having a length Ρ of 6 mm and a thickness of 0.1 mm. Φ Further, the conductive film 32 is not limited to solder, and the main component may be formed of a material such as steel or silver. Further, although the thickness thereof is not particularly limited, the both ends of the glass bulb 10 are suppressed. In the case of temperature reduction or the ease of making 2, it is necessary to form 20~120μηι. Further, the 'cylindrical metal 33' is not limited to the above-mentioned thickness or material, for example, a thickness of 0.1 to 0.5 mm, a recording, recording, Kovar, K invar, indium, tungsten The formation of components such as the system can also be. Further, the non-contact portion S is formed by the following method. 35 200949892 The method is as follows. First, the surface of the glass bulb 10 to be formed into a film 32 is subjected to sand blasting or chemical treatment to thicken the surface of the glass bulb 1 by a conventional impregnation method (for example, JP-A-2004-146351) 'The sealing portion I of the glass bulb sealed by the hollow electrode 20 is immersed in the molten solder in the 5 melting tank, and is on the outer surface of the glass bulb 1 , except A conductive thin film 32 is formed in a necessary region outside the non-contact portion s. At this time, the joint portion 32a, the non-contact portion S, and the film portion 32b which are joined to the outer lead wires 26 on the outer peripheral surfaces of both end portions of the glass bulb 10 are sequentially formed in the tube axis a direction. Next, on the thin portion ◎ 10 film 32 of the joint portion 32a and the film portion, by providing the cylindrical metal 33 having the slit 34 as shown in Fig. 3, it can be formed on both end portions of the glass bulb 1 The power supply terminal 30 of the non-contact portion s. Further, when the sealing portion 12 is immersed in the molten solder, ultrasonic waves can be applied. With such a dipping method, the electric terminal can be formed simply and inexpensively. 30 ° 15 The engaging portion 32a is formed in a slightly conical shape in a portion where the electric terminal 3 is electrically connected to the wire 22. For this reason, the area of the outer surface of the joint portion 32a is excellent even though the outer surface of the outer lead 26 is completely covered. Therefore, since the outer surface of the electric terminal 30 is small, the heat radiating effect is small. Therefore, the temperature of the wire 22 is not easily lowered. Further, since the external lead 26 is completely covered by the electric terminal 30, there is little concern that the outer lead 26 is bent and stress is applied to the outer lead 26 to break the sealing portion 12. Further, the area of the outer surface of the joint portion 32a is preferably as small as possible. Since the film portion 32b is disposed on the outer surface of the glass bulb 10 in a position opposite to the outer peripheral surface of the hollow electrode 20 except the non-contact portion S at 36 200949892, it is disposed in close contact with the glass bulb 10, and thus is hollow. The mercury vapor around the electrode 2 is less likely to aggregate, and as a result, the mercury vapor is less likely to aggregate around the wire 22. The joint portion 32a is formed such that its outer peripheral end portion is joined to the inner surface of the cylindrical metal μ. Thereby, the cylindrical metal 33 and the external lead 26 are connected. Further, in order to suppress the heat radiation effect of the power supply terminal 30 to be small, it is preferable to form the area of the cylindrical metal 33 and the film portion 32b as small as possible, and to give the direction of the 10 electric terminal 30 to the direction of the cylinder (the cylindrical body axis). The length n of the heart direction is preferably 19 mm or less. Further, when the length N is larger than the front end length 比 of the center portion side of the glass bulb body 11 in the electrode body 21, since the effective light-emitting length is shortened, if the loss of the light beam due to the power supply terminal 30 is considered, The length Μ is small, and 10 mm or less is more preferable. Further, the film portion 32b of the power supply terminal 3〇15 may be formed by a method other than the dipping method, for example, by vapor deposition, plating, or the like. ® The above-mentioned cold cathode fluorescent lamp 1 operates with a lighting frequency of 40 to l kHz and a lamp current of 3 to 25 mA. Further, when the lamp current is increased to 25 mA, in order to reduce the temperature of the hollow electrode 20 20 from the viewpoint of the effective light emission length and the reduction of the amount of the reduced ore, for example, the length N of the power supply terminal 30 is made to 19 mm, the length of the tubular portion 23 is preferably 15 mm. Although the form of the cold cathode fluorescent lamp according to the present invention has been specifically described above, the cold cathode fluorescent lamp of the present invention is not limited to the above embodiment. For example, the cold cathode fluorescent lamp is not limited to the straight type of the cold cathode glory lamp such as a U-shape, an L-shape, a C-shape, or the like. In addition, the configuration of the power supply terminal 30 is not limited to the above configuration, and may be, for example, a configuration shown in the following modified examples 丨 to 4. In the drawings of the following modified examples, the same components as those of the above-described power supply terminal 3 are denoted by the same reference numerals, and their description will be omitted. Fig. 4 is an enlarged cross-sectional view showing an end portion of a cold cathode fluorescent lamp of a modified example. The power supply terminal 51 of the cold cathode fluorescent lamp 5 shown in Fig. 4 is formed into a tubular body so as to cover both end portions of the glass bulb 10. That is, the cylindrical system is provided with a film 54 which is formed by the joint portion 52 and the film portion 53, and a cylindrical metal 55 having conductivity on the film 54 (the same as the cylindrical metal 33 of Fig. 3) Further, the non-contact portion S is formed on the entire outer peripheral surface ε of the glass bulb 1 相对 with respect to at least the lead wire 22 in the glass bulb (1) (the non-formed portion of the conductive cylindrical body) )By. Further, by way of example, the wire 22 is formed by being welded to the sealing portion 27 of the nickel 15 material at one end of the inner wire 25 of the tungsten material. Further, the joint portion 52 is viewed from the outside in a slightly hemispherical shape and covers the entire outer surface of the sealing portion 27 of the wire 22. The thickness of the film is the same as that of the Lay portion 53 of 5 μm. According to this configuration, the sealing portion 27 is completely covered by the joint portion 52, and since the end portion of the cold cathode fluorescent lamp 50 is smoothly formed into a circular shape, even the cold cathode fluorescent lamp There is little concern that the end portion of the 50 collides with the outside, and the outer lead 26 is folded and the seal portion 12 is broken. Further, although the sealing portion 27 is formed of a nickel material, it is not limited thereto. For example, it may be formed integrally with a material similar to the inner lead 25 of the tungsten material, and then a part or all of the surface of the sealing portion 27 may be easily formed. Soldering nickel 200949892 Electric ore can also be formed. Fig. 5 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of the second modification example. The power supply terminal 61 of the cold cathode fluorescent lamp 60 shown in Fig. 5 is for covering both ends of the glass bulb 10. Form a cylindrical body. That is, the cylindrical 5 system is used to attack the film material composed of the joint portion 62 and the film portion 63, and the cylindrical metal 65 having conductivity on the film 64 (the same as the cylindrical metal 33 of Fig. 3) In addition, the non-contact portion S is formed on the entire outer peripheral surface ε of the glass bulb 1〇 facing at least the lead wire 22 in the glass bulb 1〇 (the non-formed portion of the conductive cylindrical body) )By. Again, for example. The wire 22 is formed by being welded to the sealing portion 27 of the nickel material at the end of the inner wire 25 of the crane material. Further, the joint portion 62 is viewed from the outside in a slightly hemispherical shape and covers the entire outer surface of the sealing portion 27 of the wire 22. Further, the sealing portion 27 is formed in the end portion of the glass bulb 10, and is closely attached to the bottom surface thereof, and has a buried slit 12a in the radial direction of the wire. Further, in the slit 12a, 15 may be filled with the same material as the film 64, or may be hollow. Further, the joint portion 62 covers the outer surface of the sealing portion 27 of the wire 22 with a film. The thickness of the film is the same as that of the film portion 63 of 5 μm. According to this configuration, by embedding the sealing portion 27 in the end portion of the glass bulb, the sealing portion 27 does not collide with the external product, and the sealing portion 12 20 can be prevented from being damaged. Further, by using the entire power supply terminal 61 as a thin film, the amount of solder used can be reduced, so that a cold cathode fluorescent lamp 60 which is cheaper can be manufactured. Further, in the above-described modified example 2, the entire system of the sealing portion 27 is completely buried in the end portion of the glass bulb 10. However, the present invention is not limited thereto, and only one portion of the sealing portion 27 may be buried. That is, the more the amount of burying of the sealing portion 27 at the end of the glass bulb 10, 39,949,892, the smaller the probability of collision with the outside. Fig. 6 is an enlarged cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of the third modification. Fig. 7 is a perspective view showing a film member constituting the electric terminal. The power supply terminal 71 of the cold cathode fluorescent lamp 7 shown in Fig. 6 is formed to cover the both ends of the glass bulb 10 so as to form a tubular body. That is, the cylindrical system is composed of a joint portion 72' made of solder and a cylindrical metal 73 made of iron-nickel alloy, and 'glasses' facing at least the lead wires 22 of the cylindrical metal 73 and the inside of the glass bulb 1〇. The entire outer peripheral surface ε of the bulb 10 has a non-contact portion S (a concave groove is formed in the inner surface of the cylindrical metal 73). Further, the cylindrical gold © 10 genus 73 is formed into a cylindrical body having a substantially C-shaped cross section and a thickness of 15 μm, and is externally fitted to the end portion of the glass bulb 10. The inner diameter of the cylindrical metal 73 is slightly smaller than the outer diameter of the glass bulb 1 ,, and in the cylindrical metal 73, the slit 74 as shown in Fig. 7 is provided. Therefore, even if there is a slight error in the size between the inner diameter of the cylindrical metal 73 and the outer diameter of the glass bulb 1 ,, the inner surface of the cylindrical metal 73 is designed to be attached to the outer surface of the glass bulb 10. Further, for example, the wire 22 is formed by being welded to the sealing portion 27 of the nickel material on one end of the inner wire 25 of the tungsten material. Further, the joint portion ® 72 looks like a substantially cylindrical shape and covers the entire outer surface of the sealing portion 27 of the wire 22. Further, the power supply terminal 71 may not necessarily be made of the same material 20 for all of the electric terminals. Fig. 8 is a perspective view showing the power supply terminal of the cold cathode fluorescent lamp of the modified example 4, and Fig. 9 is a sectional view showing the power supply terminal. As shown in FIGS. 8 and 9, the power supply terminal 81 is provided with a cylindrical body 82 that is externally inserted into the outer periphery of the end portion of the glass bulb 10, and extends from the cylindrical body 82 to 40 200949892 and is partially connected to the wire 22 The connected paste is obtained by press working (sheet processing) of a stainless steel metal plate. The cylindrical body 82 has a cylindrical shape, and its inner surface protrudes inward in the radial direction, and has a branch member that is pressed against the glass bulb opposite to the wire 22 of the light bulb 5 _ The outer peripheral surface of the glass bulb (10) other than the entire area ε is supported by the glass bulb _. Specifically, the support member is formed at a position where the cylindrical cylinder walls are equally spaced in the circumferential direction thereof to form the nip portion 84. Each of the nip portions 84 is formed by a nicker 84c which is slightly U-shaped in the longitudinal direction with respect to the cylindrical wall, and extends from the end side of the tubular H) body 82 to the other end side. The tongue of the body is composed. As shown in the figure, the portion of the tongue that is tangentially separated from the cylindrical body 82 is bent to the inside. The &lt;"-shaped curved portion _ is bent toward the inner side with the base end portion communicating with the tubular body 82 as a starting point. If the cylindrical body 82 formed by the above configuration is externally inserted into the outer periphery of the end portion of the glass bulb 15 10, the free end portion is " The top portion 84b of the &lt;" word is in contact with the outer periphery of the glass bulb 1 相对 facing the outer peripheral surface of the electrode body 21, and the nip portion 84 is configured such that the base end portion is outside the radial direction of the glass bulb 1 at the base point. The square is elastically bent (elastically deformed) and held at the end of the glass bulb 10 with its restoring force. Thereby, the axial center of the cylindrical body 82 having the cylindrical shape 20 can be slightly aligned with respect to the glass bulb 10. Further, in order to avoid contact with the surface of the glass bulb 1 due to the accuracy of the inner diameter processing of the cylindrical body 82, and to lower the temperature influence of the cylindrical body 82, the inner surface of the cylindrical portion of the cylindrical body 82 is The distance (d) outside the glass bulb 10 is preferably in the range of 0.2 mm in dg. Further, the connecting portion 83 is formed by the lead portion 85 of the strip-shaped body (elongated 41 200949892 thin rectangular elastic sheet) of the tubular body 82, and is bent from the end portion of the lead portion 85 toward the tube axis. 'U-shaped connection terminal 86 formed in a manner to be connected to the wire 22. When the power supply terminal 81 formed by the above configuration is externally inserted into the cold cathode fluorescent lamp from the cylindrical body 82 side 5, as described above, the cylindrical body 82 functions by the clip portion 84 formed thereby. The relative position in the radial direction of the glass bulb 1 决定 is determined. At this time, the nip portion 84 provided on the cylindrical body 82 is disposed at the top portion 84b of the "<" and the outer peripheral surface of the glass bulb 1 相对 opposite to the wire 22 (internal wire 25) in the glass bulb 1〇. The ε is not abutted, but is pressed against the outer peripheral surface of the glass bulb 10 that faces the cylindrical portion 23 of the electrode body 21. In this configuration, since the entire peripheral surface ε of the outer peripheral surface of the glass bulb 10 facing the lead wire 22 in the glass bulb 1 is non-contact, the peripheral temperature of the lead 22 of the outer peripheral surface ε is not easily lowered. Moreover, it is not easy to collect mercury vapor around the wire 22, so that the brightness of the lamp of the cold cathode fluorescent lamp is lowered due to insufficient mercury vapor in the discharge circuit, or the phenomenon that the brightness of the lamp is slowed down is not likely to occur. As a result, in addition to having a long service life, it is also possible to have sufficient lamp brightness. On the other hand, the connection terminal 86 is inserted with the wire 22 (external wire 26), and the front end of the wire 22 is inserted into the U-shaped portion of the connection terminal 86. Further, by connecting the connection terminal 86 to the front end portion of the wire 22 by caulking, the electrical connection state (stable connection) is maintained. As a result, positioning of the position of one of the power supply terminals 81 with respect to the glass lamp (four) can be performed. Further, after the gap filling, the gap-filled connection terminal 86 may be covered with a soft metal such as solder or tantalum 200949892, or the connection strength may be further improved by laser welding or the like. 5 ❻ 10 15 ❹ 20 Further, the above-mentioned power supply terminal 81 is not limited to stainless steel, and other metal materials such as phosphor bronze may be used from the viewpoint of economical and linear properties. Further, it is needless to say that the shape (length, cross section), the number, the arrangement position, and the like of the clip portion 84 are not limited to the above. Mainly, it suffices that the glass bulb 10 can be elastically supported in the cylindrical body 82. For example, in the circumferential direction of the cylindrical inner surface of the cylindrical body 82, it is divided into three equal parts (divided by a predetermined angle or plural), and at the position of the three equal parts, arranged to protrude from the cylindrical inner surface glass Two positioning pins (not shown in the figure) that are twisted and processed in the manner of the outer side of the bulb 1 以及, and the " &lt;" the top 84b of the word. With this configuration, the outer peripheral surface of the glass bulb with one part is used as the " The two positioning pins provided on the inner surface of the cylindrical shape of the &lt;" word top 84b can be supported at a certain distance. Fig. 10 is a cross-sectional view showing the power supply terminal 91 of the cold cathode fluorescent lamp of Modification 5. In the modified example 5 and the modified example 4, the connecting portion 9 of the electric terminal 91 is folded from the lead portion % so as to be in contact with the end surface of the lead wire 22, and is welded to the lead wire 22 by the surface contact portion 96. Connect two. - ^ zero Jb 5. According to this configuration, since the stress is applied to the wire 22 in the axial direction by the connecting portion 93, the bending applied to the wire 22 can be suppressed, and the time is changed, the resistance is reversed, or the solder is soldered. The metal such as the button metal can make the surface contact portion 96 form a stable connection with the wire, and can be positioned relative to the glass bulb ίο, the axial direction of the power terminal 91 is 43200949892. Fig. 11 is a cross-sectional view showing the power supply terminal ι〇ι of the cold cathode fluorescent lamp of Modification 6. In the modified example 6, the modified example 4 is formed such that the connecting portion 5103 of the electric terminal 101 is bent from the front end surface of the lead portion 22 so as to be close to the outer peripheral surface of the lead wire 22, and is formed in a planar shape. The contact portion 106 is different from the wire 22 in a fusion-bonding connection, and the end face of the connection portion 103 facing the sealing portion is in contact with the sealing portion 27. According to this configuration, the bending force applied to the wire 22 is suppressed, and the soft metal such as laser welding, smashing resistance, or solder or money can be used to form the planar contact portion 106 and the wire 22 to form a stable connection. Further, positioning of the position of the power supply terminal 101 in the axial direction with respect to the glass bulb 10 can be performed. Fig. 12 is a cross-sectional view showing the power supply terminal 2〇1' of the cold cathode fluorescent lamp of Modification 7. In the modified example 7 and the modified example 4, the connection portion 203 of the power supply terminal 201 is in surface contact with the end surface of the sealing portion 27, and the front end of the lead-out portion 205 is folded at the same time. The method of providing the through hole ◎ 203a (or the cutting portion) is different, and after the surface is contacted, the connection portion 203 is connected to the wire 22 and the sealing portion 20 27 by using a soft metal such as solder or tantalum. . According to this configuration, since the stress is applied to the sealing portion 27 of the wire 22 by the connection port P203, the bending force applied to the wire 22 can be suppressed. Further, the use of a soft metal such as solder or tantalum allows the sealing portion 27 of the large contact surface to form a stable connection with the surface of the connecting portion 2〇3. Further, since the position of the sealing portion 27 of the glass bulb 10 can be set to the position of the electric terminal, the length of the wire η is shortened, so that the total length of the cold cathode fluorescent lamp is shortened. Fig. 13 is a cross-sectional view showing the power supply terminal 3〇1 of the cold cathode lamp of the modified example 8. (5) The modified example 8 and the modified example 7 are characterized in that the power supply terminal 301 is a bottomed cylindrical body 'that is, 'the outlet portion of the power supply terminal 301 is a part of the cylindrical cylindrical body 82, and the connection portion 303 is at the bottom of the column. The formation of this _ point is different. According to this configuration, since the wire 22 is inserted into the through hole 2〇3a of the connecting portion 303, the sealing portion 27 is brought into surface contact with the plate surface of the connecting portion 303, so that the bending force applied to the wire 22 does not function. Further, since the connecting portion 303 is welded to the lead wire 22 and the sealing portion 27 by using a soft metal such as solder or tantalum, a female connection can be formed. Further, since the position of the sealing portion 27 of the glass bulb can be positioned to the position of the electrical terminal 3〇1, the total length of the cold cathode fluorescent lamp can be shortened due to the shortening of the length of the wire 22. Fig. 14 is a perspective view showing the power supply terminal 401 provided on the end portion of the cold cathode fluorescent lamp of Modification 9. In the modified example 9 and the modified example 4, the connection portion 403 of the electric terminal 4 is extended in a thin rectangular shape which is parallel to the tube axis A and extends from the cylindrical wall of the cylindrical body 82 at a right angle in the middle direction. The lead-out unit 4〇5 and the elastic gripping unit 4〇6 provided at the extending end of the lead-out unit 20 405 are different. Specifically, the 'elastic holding portion 4' 6 has a base portion 406a having a square plate portion perpendicular to the tube axis A, and a pair of elastic holding pieces 406b, 406c extending from the base portion 4' 6a. Further, each of the elastic holding pieces 4〇6b and 4〇6c has a thin rectangular shape 45 200949892 extending from the side of the base portion 406a to the side of the cylindrical body 82. The elastic holding pieces 4〇6b and 406c are bent toward the inner side (toward the tube axis A) to become " In the shape of &lt;", the guide wire 22 is elastically held between the tops of the curved portions (Fig. 8 and Fig. 9). According to this configuration, the position of the electric terminal 401 with respect to the glass bulb 10 can be made by abutting the base portion 4a 6a at the front end of the wire 22. Further, in the power supply terminal 401, the wire 22 is in point contact with the elastic holding pieces 4G6b, 406c, even if the cylindrical body 82 is slightly inclined with respect to the glass bulb 1 (Fig. 8, Fig. 9), due to the wire 22 is detached in effect between the top portions, and thus it is not easy to apply a strong stress to the wire 22. Further, since the elastic holding portion 406 has excellent detachability of the wire 22, the detachability of the glass bulb 1 to the electric terminal 4〇1 can be improved. Fig. 15 is a perspective view showing the power supply terminal 5〇1 provided on the end portion of the cold cathode fluorescent lamp of the modified example 1. In the modified example 10 and the above-described modified example 9, the connecting portion 15 503 of the electric terminal 5 〇 1 has a thin portion-shaped lead-out portion 505 extending from the cylindrical wall of the cylindrical body 82 in the direction of the tube axis, and the lead-out portion 505 The elastic grip portion 506 formed by the extension is different. Specifically, the elastic grip portion 506 is basically the same as the elastic grip portion 406. That is, it is constituted by one of the elastic holding pieces 506b and 506c extending from the base 506a. It is characterized in that it includes a lead-out portion 505, and the strip-shaped portion extending from the tubular body 82 is formed by bending at a predetermined position in the longitudinal direction. According to this configuration, the amount of the material of the connecting portion 5〇3 of the electric terminal 5〇1 can be made small in comparison with the modified example 9, so that the entire lightweight 46 200949892 can be achieved. Further, the point where the insertion of the elastic grip portion 5Q6 of the wire 22 is excellent is the same as that of the above-described modified example 9. On the other hand, the wire 22 is a structure that is not easily pulled out from the elastic holding portion 506. If the wire 22 is to be pulled out from the elastic gripping portion 5 506, the lead-out portion 505 is bent toward the inner side (toward the tube axis A). As a result, the elastic piece portion 506c is also displaced toward the inner side, and becomes the pressing wire 22, and the frictional force between the elastic piece portion 506c and the wire 22 is increased. Thereby, the electric terminal 501 can be mounted on the glass bulb 1 〇, and can be suitably used in the case where the apparatus is not removed. Further, since the elastic holding portion 506 has excellent detachability of the wire 22, the detachability of the glass bulb 1 to the power supply terminal 5〇1 can be improved. Fig. 16 is a enlarged cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of the modified example. The modified example 11 differs from the above-described first embodiment in that it has a height difference on the outer circumferential surface 15 of the cylindrical metal 801, and the film portion 32b corresponding to the first embodiment is not formed. Specifically, as shown in Fig. 17, the cylindrical metal 801 of the cylindrical body 803 of the power supply terminal 802 has the first tubular portion 804 and the first tubular portion 804 extends from the tube axis A direction. In the second tubular portion 805, the second tubular portion 805 is larger than the first tubular portion 804 in the outer diameter. According to this configuration, when the cold cathode fluorescent lamp is disposed in the set of sockets 1600 of the backlight unit described hereinafter, a part of the end face 1640 of the wire-axis a direction of the socket 1600 can be abutted against the first cylinder The height difference 806 of the difference between the outer diameter of the portion 804 and the second cylindrical portion 805 is 'in this way, the lamp 47 200949892 is easily positioned in the tube axis A direction. Since the first tubular portion 804 and the second tubular portion 805 have the same thickness, the second tubular portion 805 is also larger in inner diameter than the first tubular portion 804. Since the portion corresponding to the film portion 32b of the embodiment 1 is not formed, the inner surface of the first cylindrical portion 804 is in close contact with the outer peripheral surface of the glass bulb 10. On the other hand, the inner surface of the second cylindrical portion 805 is not in contact with the outer peripheral surface of the glass bulb 10, and has a slit between the equal surfaces thereof, and the slit is a non-contact portion S. Fig. 18 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 12. The modified example 12 and the above-described modified example 4 are greatly different in that the outer peripheral surface of the cylindrical body 811 has a height difference. Specifically, the tubular body 811 of the power supply terminal 812 has a first tubular portion 813 and a second tubular portion 814 extending from the first tubular portion 813 to the lead wire side in the tube axis A direction, and the second tubular portion 814 is also The outer diameter is larger than the first tubular portion 813. According to this configuration, in the same manner as the modified example 11, a part of the end surface of the socket (not shown) in the direction of the tube axis A direction of the lead wire can be abutted against the first cylindrical portion 813 and the second cylindrical portion 814. The difference in height is 815, which makes it easy to position the lamp in the direction of the tube axis A. Since the first tubular portion 813 and the second tubular portion 814 have the same thickness, the second cylindrical portion 814 is also larger in inner diameter than the first tubular portion 813. Therefore, the gap between the inner surface of the second cylindrical portion 814 and the outer peripheral surface of the glass bulb 10 is larger than the gap between the inner surface of the first cylindrical portion 813 and the outer peripheral surface of the glass bulb 10, and the inner surface of the second cylindrical portion 814 is formed. It is a structure that does not easily come into contact with the glass bulb 10. Further, the base end portion of the clip portion 84 is disposed in the second tubular portion 814. Since the second tubular portion 814 is larger than the first tubular portion 813 on the outer diameter 200949892, the proximal end portion of the lost portion 84 can be further away from the outer peripheral surface of the glass bulb 1 ,, and the nip portion 84 can be made easier than the flap. Functional structure. Fig. 19 is a enlarged cross-sectional view showing the end portion of one of the cold cathode luminescent lamps of Modification 13. The modified example 13 differs greatly from the above-described modified example U in that the outer peripheral surface of the cylindrical body 821 has a height difference at two locations. Specifically, as shown in FIG. 20, the cylindrical body 821 of the power supply terminal 822 has a first cylindrical portion 823 and one of the two sides on the two sides of the tube axis a direction 10 from the second cylindrical portion 823. The tubular portions 824 and 825 and the second tubular portions 824 and 825 are also larger in outer diameter than the first tubular portion 823. According to this configuration, when one of the backlight units 1600 described below is installed in the cold cathode fluorescent lamp, the difference 826 between the outer diameter difference between the i-th cylinder portion 823 and the second cylindrical portions 824 and 825 is used. 827, it is easy to position the lamp 15 in the direction of the tube axis A. Furthermore, by embedding the socket 1600 in the concave portion 828 between the height difference 826, 827 at two places, the displacement of the positioned lamp in the direction of the tube axis A can be made by the south difference 826, 827 at two places. Since the direction in the direction of the tube axis A is restricted in two directions, the surface damage of the cylindrical body 821 due to the friction with the socket 16 is less. Further, since the above-described positioning may cause the size of the glass bulb 10 in the tube axis A direction to vary due to thermal expansion or the like, it is preferable to perform only one of the power supply terminals 822 at both end portions of the glass bulb 10. Since the thickness of the first tubular portion 823 and the second tubular portions 824 and 825 are the same, the second tubular portions 824 and 825 are also larger in inner diameter than the first tubular portion 823. The inner surface of the first cylindrical portion 823 is in close contact with the outer peripheral surface of the glass bulb 10 because the portion corresponding to the film portion 32b of the first embodiment is formed in an indefinite shape. On the other hand, the inner surfaces of the second cylindrical portions 824 and 825 are not in contact with the outer peripheral surface of the glass bulb, and have slits between the equal surfaces thereof, and the slits 5 on the side of the tube A in the tube axis direction become non-contact portions. S. Fig. 21 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 14. The modified example 14 and the above-described modified example 12 are greatly different in that the outer peripheral surface of the cylindrical body 811 has a southerly difference. Specifically, the cylindrical body 831 of the power supply terminal 832 has a second cylindrical portion 833' and a pair of second and second partial portions 834 and 835 extending from the first cylindrical portion 833 on both sides of the tube axis a direction. The second tubular portions 834 and 835 are larger than the first tubular portion 833 in the outer diameter. According to this configuration, in the same manner as the modified example 12, a part of the end surface of the socket (not shown in Fig. 15) on the side of the tube A in the direction of the tube can be abutted against the first cylindrical portion 833 and the second cylindrical portion 834. The height difference 836 generated by the diameter difference is easy to position the lamp in the direction of the tube axis A. Furthermore, by embedding the socket in the recessed portion 838 between the heights 836 and 837 of the two places, the displacement of the positioned lamp in the direction of the tube axis a can be made by the height difference 836, 837 of two places. Since the tube axis A direction 2 is controlled in two directions, the surface damage of the cylindrical body 831 due to friction with the socket is small. Further, since the above-described positioning may cause the size of the glass bulb 10 in the tube axis A direction to vary due to thermal expansion or the like, it is preferable to perform only one of the power supply terminals 832 at both end portions of the glass bulb 10. Since the first tubular portion 833 and the second tubular portions 834 and 835 have the same thickness, the 50,094,892 second tubular portions 834 and 835 are also larger in inner diameter than the first tubular portion 833, and the second tubular portions 834 and 835 are larger. The gap between the inner surface and the peripheral surface of the glass bulb 1 is larger than the gap between the inner surface of the i-th tube portion 833 and the outer peripheral surface of the glass bulb 10. Therefore, the inner surfaces of the second cylindrical portions 834 and 835 are not easily brought into contact with the glass bulb 1 5 10 15 ❹ 20 . Further, the base end portion of the clip portion 84 is disposed in the second cylindrical portion 833. Thereby, it becomes a structure which can easily couple a socket to the height difference 836. Fig. 22 is an enlarged cross-sectional view showing one end portion of the cold cathode glory lamp of Modification 15. In the modified example 15 and the modified example 4, a part of the pair of end edges 842 and 843 of the holding cylindrical body facing the slit portion 841 is provided with a cross-over portion 84 that is mutually engaged. This is the difference between the Department and the Department. , τ μ continued. The concave portion w formed by the 丨丨841 is opposite to the portion 842 of the one end edge 842, and is disposed at a position opposite to the concave portion 844 in the other end edge 843, and is convexly embedded in the concave portion 844. Part 845 is composed. According to this configuration, since the movement of the convex pipe axis A direction by the concave portion 844 can be controlled, it is not easy to generate a cylindrical body such as the two 2 842 and 843 which are displaced from each other by the position opposite to each other (4) Deformation = keeps the shape of the cylindrical body 82 stable. Furthermore, it is possible to absorb the dimensional tolerance of the glass bulb. The visibility is not limited to the concave portion. The convex portion 845 is a shape in which the concave portion 844 and the convex portion 845 are controlled to be displaced by a pair of end edge positions. For example, 844 is a square shape cut on the outer peripheral surface of the cylindrical body. 51 200949892 The outer peripheral surface of the cylindrical body 82 protrudes into a quadrangular shape, and may be cut into a polygonal shape or a protrusion other than the square shape. Furthermore, the pair of engaging portions may be provided with a plurality of pairs. Fig. 23 is a enlarged cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of Modification 16. As shown in Fig. 23(a), the modified example 16 and the above-described modified example 15 are greatly different in that the inner surface of the end portion 851 on the hollow electrode side in the direction of the main axis A of the cylindrical body 82 is chamfered. The chamfered portion 852 shown in Fig. 23(b) is formed in a conical shape in the entire circumferential direction of the end portion 851 on the hollow electrode side in the tube axis A direction of the cylindrical body 82. Thereby, the damage of the surface of the glass bulb 10 when the electric terminal 81 is inserted into the glass bulb 1 can be suppressed, and the electric terminal 81 can be easily attached to the glass bulb 10. Figure 24 is a large cross-sectional view of the end of one of the cold cathode glories of the modified example 17. The modified example 17 and the modified example 15 are formed in the end portion 861 on the working electrode side in the tube axis a direction of the tubular body 82. &lt; In this case, there is a large amount of defects. By the stomach, the inner diameter of the end portion 861 is increased, and when the electric terminal 81 is inserted into the light bulb 1 (), the glass bulb 1 can be suppressed. Damage, and the electric terminal can be easily installed in the glass bulb 1〇. The oblique view of the power supply terminal of the cold cathode glory of the modified example 18 is shown in the figure before and after the installation of the cold cathode fluorescent lamp of the power supply terminal. The good example 18 and the above modified example 9 have a large difference in the composition of the cylindrical body 871 52 200949892. As shown in Fig. 25, the cross section on the cylindrical side is slightly C-shaped, and includes 873 having a slit portion 872 in the axial direction of the cylindrical body, and extending from the end portion of the cylindrical portion 873. A plurality of thin (in the example, 6) thin rectangular elastic tongues 074. _ "874 == one end and a plurality of strips (in the direction of the core) of the cylindrical body in the direction of the axis of the cylindrical body and the opening of the gap in the circumferential direction - the degree of 疋 而 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Department and

10 15

Since the slit portion 872 of the portion 873 is in contact with each other, the dimensional tolerance of the glass bulb 10 can be absorbed by the elastic force of the slightly C-shaped portion, and the feeding terminal (4) can be held on the outer peripheral surface of the glass bulb 1 . Each of the elastic tongue pieces 874 is formed on the side of the base end portion on the side of the cylindrical portion 873 as a base point, and is entirely bent toward the inside. Further, in the vicinity of the end portion, the portion is bent inwardly into a "&lt;"-shaped elastic tongue. The front end of the piece 874 is expanded to an outer shape. The reason for bending into such a "&lt;" shape is that when the power supply terminal is externally inserted into the cold cathode fluorescent lamp, the outer peripheral surface of the glass bulb 10 is not damaged by the angle of the front end of the elastic tongue 874, and Since the end portion 12 of the glass bulb 10 is easily inserted, the work of attaching the electric terminal to the end portion of the glass bulb can be smoothly performed. Here, the diameter of the virtual cylinder that is inscribed in the top portion of the elastic portion 874 which is pulled out from the "20" side (the outer peripheral surface side of the glass bulb 1) is also set to be larger than The outer diameter of the glass bulb 10 is short. As shown in Fig. 26, if the power supply terminal 876 having the above configuration is externally inserted into the end portion of the glass bulb 10, the top of the "&lt;" word of each elastic tongue 874 is in contact with the outer peripheral surface of the glass bulb 10. The entire system of the elastic tongue piece 874 elastically bends (elastically deforms) the outer end of the 53 200949892 base end toward the base point of the glass bulb ίο, and holds the glass bulb 10 with its restoring force. Thereby, the glass bulb 10 is slightly aligned with the axis of the cylindrical portion 873, and thus is positioned in the cylindrical body portion 873. 5 By this configuration, the entire system of the peripheral surface of the cylindrical body 871 is equally distributed.

The load is applied, thereby preventing the glass bulb 10 from being broken. Further, since the adhesion between the inner surface of the cylindrical body 871 and the outer peripheral surface of the glass bulb 10 is improved, after the electric terminal 876 is attached to the glass bulb 10, the feeding terminal 876 can be made in the tube axis direction with respect to the glass bulb 10. Easy to move. Further, G 10 does not need to say that the shape, the number, the arrangement position, and the like of the elastic tongue 874 and the slit portion 875 are not limited to the above. Mainly, it suffices that the glass bulb 10 can be elastically supported in the cylindrical body 871. Fig. 27 is an enlarged cross-sectional view showing the end of one of the cold cathode fluorescent lamps of Modification 19. - 15 The modified example 19 and the above-described modified example 9 are greatly different in the configuration of the cylindrical body 881. The cylindrical body 881 is spirally wound with a linear elastic material 882 formed of a metal material. According to this configuration, since the raw material itself can be formed into the cylindrical body 881, the material loss can be reduced. The homogenous body 881 has a second tubular portion 883 and a second tubular portion 884 which is provided on the side of the axial direction of the cylindrical body from the second tubular portion 883, and the second tubular portion m is also in the outer position. The 1 cylinder portion 883 is large. The inner surface of the first cylindrical portion 883 is in close contact with the outer peripheral surface of the glass bulb ί, and the glass bulb 10 is held by the i-th tubular portion 883. On the other hand, the inner surface of the second cylindrical portion 884 is not in contact with the outer peripheral surface of the glass bulb 1 , and has a slit between the surfaces thereof, and a portion of the slit is a non-contact portion S. Further, the elastic material 882 has a circular cross section and is not closely spaced in the axial direction of the cylindrical body to form a close contact, and the shape of the cylindrical body 881 is not easily broken. Fig. 28 is a perspective view showing the oblique end of one end of the cold cathode fluorescent lamp of Modification 20. Fig. 29 is an enlarged sectional view showing the end of one of the cold cathode fluorescent lamps of Modification 20. The modified example 20 and the above modified example 19 are greatly different in the constitution of the elastic material. The cylindrical body 891 is a spirally wound sheet-shaped elastic material 892 formed of a metal material. According to this configuration, since the raw material itself can be formed into the cylindrical body 891, the material loss can be reduced. The tubular body 891 has a first tubular portion 893 and a second tubular portion 894 extending from the first tubular portion 893 to the side of the tubular body in the axial direction, and the second tubular portion 894 is also larger than the first outer diameter. The tubular portion 893 is large. The inner surface of the first cylindrical portion 893 is in close contact with the outer peripheral surface of the glass bulb ί, and the glass bulb 15 1 is held by the second cylindrical portion 893. On the other hand, the inner surface of the second cylindrical portion 894 is not in contact with the outer peripheral surface of the glass bulb 10, and a gap is formed between the surfaces of the second cylindrical portion 894, and one of the slits is a non-contact portion S. Further, since the plate-like elastic material 892 improves the heat dissipation property of the cylindrical body 891, the slit 895 is formed in the axial direction of the cylindrical body. 2〇 The figure shows an enlarged cross-sectional view of one end of the cold cathode camping lamp of the modified example 21. The modified example 21 differs from the above-described modified example 4 in the configuration of the sealing portion 27. Specifically, the sealing portion 27 is embedded in the recessed portion 12a provided in the end portion 12 of the glass bulb 10 in a state of being completely immersed, and the bottom surface 55 200949892 is in close contact with the bottom surface of the recessed portion 12a. Further, the circumferential surface thereof is kept at a distance B from the side peripheral surface of the concave portion 12a in the radial direction of the wire. By this configuration, in the end portion 12 of the glass bulb 10, since the bottom surface of the sealing portion 27 is in an intimate state, it is possible to suppress the external impact applied to the wire 22. Further, the "the bottom surface of the sealing portion 27 has a slit in the radial direction of the wire" prevents damage to the end portion 12 of the glass bulb 10 due to thermal expansion of the sealing portion 27 during solder dipping. Fig. 31 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 22. The modified example 22 differs from the above-described modified example 4 in the configuration of the sealing portion 27. Specifically, the sealing portion 27 is disposed so as to be spaced apart from the end portion 12 of the glass bulb 10 by a gap C therebetween, whereby when the wire 22 is welded to the power supply terminal 30 or the lamp current is increased, Although the sealing portion 27 of the wire 22 generates heat, it is provided with a slit 15 between the end portion 12 of the glass bulb 10, so that it is not applied to the end of the glass bulb 10 due to thermal expansion of the sealing portion 27. Thermal stress of the portion 12. As a result, breakage of the end portion 12 of the glass bulb 1 can be suppressed, and leakage can be prevented. Further, when the distance c is 〇.1 mm to 0.5 mm, 'exemplary', even in the case where the wire 22 is solder-impregnated in advance, since the wire 22 of the slit portion is not attached with solder, the film can be suppressed in one step. The end of the glass bulb 1 is broken to prevent leakage. As described above, the power supply terminals provided on both ends of the glass bulb 10 are not limited to the above-described first embodiment and the modified examples 1 to 22, and may be a combination thereof. In addition, the power supply terminal is not limited to the same shape at both ends, and any of the above-described first embodiment and the modified example ;~;^ can be incorporated in the test example (experimental description). In the cathode fluorescent lamp, the temperature characteristics around the electrode were measured, and the heat release effect of the power supply terminal was examined. 5 ❹ 10 15 20 Furthermore, as shown in Figure 32 U), the cold-down fluorescent lamp without the power supply terminal is used as the comparison product 1 (known as the equivalent), as in the 32(b) ^ household = Although it is shown that the power supply terminal 'but the clip portion 84 is a cold cathode fluorescent lamp that is in contact with the entire outer peripheral surface of the glass bulb 10 opposite to the conductor 22 in the light (four), as a comparison product 2, The cold cathode fluorescent lamp of the above-described modified example 4 shown in Fig. 32(c) is used as the product of the present invention. Furthermore, in consideration of the demand for high brightness of near = 'as experimental conditions, the lamp frequency of 4 〇 ~ 100 kHz cold cathode fluorescent lamp (4) is lighted (about 3 times compared with f lamp current) The operation is performed to measure the surface temperature W of the glass bulb 10 facing the hollow electrode 2A and the surface temperature W2 of the glass bulb 10 which is opposite to the wire of the glass bulb. Further, the power supply terminal 81 of the present invention is formed of a thin metal member made of stainless steel having an inner diameter 〇 of 5 claws, a length L1 of 7 mm, an L2 of 3.5 mm, an L3 of 1.5 mm, and a thickness of 〇1. Further, although the size of the power supply terminal 81a of the comparative product 2 is substantially the same as the power supply terminal of the above-described present invention, the curved portion 84b of the clip portion 84 is opposed to the wire 22 in the light bulb bulb. The entire outer peripheral surface of the glass bulb 1G is in contact with each other. First, in the comparative product 1, the surface temperature W1 is about 20 (TC, since the surface temperature W2 is about 195 t, and the temperature difference is about 5. 〇 The system is small, and therefore, there is no mercury vapor retention around the wire 22. As a result, not only 57 200949892 has a long service life, but also has sufficient lamp brightness. In contrast, in the comparative product 2, the surface temperature W1 It is about 16 (rc, the surface temperature W2 is about 140 〇C, and since the temperature difference is about as large as it is, the mercury vapor is easily retained around the wire 22. Therefore, it is easy to generate mercury vapor from the 5 discharge circuit. The brightness of the cold cathode fluorescent lamp is reduced due to insufficient, or the brightness of the lamp is slowed down. As a result, the service life of the product 2 is shorter and the brightness of the lamp is lower than that of the comparative work. In the present invention In the product, the surface temperature W1 is about 165 〇c, since the surface temperature W2 is about 16 〇 ° C, and the temperature difference is about 5. The lanthanum system is small, since © 1 ,, with the comparison product 1 , in the wire There is no mercury vapor retention in the vicinity of 22. In addition, compared with the comparison product 1, it is known that the surface temperature ^^1 can be reduced by about 35 ° C, which can reduce the amount of sputtering on the inner surface of the hollow electrode, and when hollow When the front end of the electrode abuts against the inner surface of the glass bulb, it prevents the heat of the inner surface of the glass bulb due to the heat of the hollow portion of the hollow electrode. Further, it is understood that the temperature difference is about 5 ° C. The system is small, and the brightness of the lamp can be obtained, and it is not easy to cause a phenomenon in which the brightness of the lamp is slowed down. Further, in the present invention, the tube portion 23 in the electrode body 21 of the hollow electrode 2 is used. The curved portion 84b of the nip portion 84 on the outer surface of the glass bulb is abutted against the hollow portion 20 of the nip portion 84 on the surface of the glass bulb. Therefore, there is no retention of mercury vapor. Furthermore, in the present invention, the bent portion 84b of the clip portion 84 is tied to When the outer surface of the glass bulb 10 near the front end of the hollow electrode 2 is in contact with the front end of the hollow electrode 20, the temperature of the abutting portion is lower than the surface temperature W1. The temperature gradient is 58 200949892 The moving direction of the mercury vapor is not retained by the mercury vapor. Therefore, the bent portion 84b of the missing portion 84 is mounted at a position similar to the cylindrical portion 23 of the hollow electrode 2〇 and the front end. The glass bulb is preferably on the outer surface of the crucible. 5 ❹ 10 15 Lu 20 Further, although the above lamp current is 20 mA, the present invention has the same effect at a lamp current of 3 5 to 22 mA. Next, in the cold cathode fluorescent lamp of the above embodiment, the correlation between the surface roughness Ra of the portion of the glass bulb 10 of the lead wire 22 and the peeling strength N is examined. For the measurement, a cold cathode fluorescent lamp having no power supply terminal as shown in Fig. 33 was used. The glass bulb of the cold cathode fluorescent lamp has an outer diameter of 4 mm and an inner diameter of 3 mm. The outer diameter of the bead 12b provided at the end of the glass bulb 10 is 2.78 mm, and the length of the tube axis A is Ea2 mm. The wire diameter F of the wire 25 is 0_8 mm, the distance C between the sealing portion 27 and the end portion I of the glass bulb 1 is 0_25 mm, the outer diameter 中空 of the hollow electrode 20 made of nickel is 2 7_, and the length in the direction of the tube axis a is 10mm. The surface roughness Ra was measured by using a scanning confocal infrared laser microscope (manufactured by Olympus Co., Ltd., [EXT. OLS3000]), and the surface roughness Ra of the internal lead 25 was measured five times to obtain an average enthalpy. Specifically, as shown in Fig. 34, the outer peripheral surface of the inner lead wire 25 is equally spaced at a position in the circumferential direction of the 260 μm in the direction of the axis of the guide shaft, and is measured by the line (1) to (5). s position. As the peeling strength Ν, the strength is equal to the force applied to the wire 22, and the strength of the glass is peeled off from the wire 25 by using Digital

ForceSauge (made by IMADA Co., Ltd., DS2-500N) and 歪 observation 59 200949892 The horizontal load test of the meter was measured. Specifically, as shown in Fig. 35, the detection front end portion 900 of the Digital Force Sauge is pushed at a speed of 1 mm/min at a position separated by 0.50 mm from the bead 12a (the end portion 12 of the glass bulb 1). The scorpion was observed with a helium observatory, and the measurement of the Digital Force Sauge of 5 moments of peeling was read. Fig. 36 shows the results of measurement of the rough surface roughness ^^ and the peeling occurrence strength n. Fig. 37 shows the relationship between the surface roughness Ra and the peeling occurrence strength n. As shown in Fig. 36, when the surface roughness is 〇.2Ra 〇.8R_a, since the ❹ 10 seal strength is sufficient, no leakage occurs in the bead 12 (sealing portion). Furthermore, no air bubbles were generated in the bead 12 (sealing portion). On the other hand, when the surface roughness is 〇.08Ra, leakage is caused in the bead 12 (sealing portion) because the sealing strength is insufficient. Further, when the surface roughness is 〇.99Ra, bubbles are generated at the end portion 12. It is recognized that if the surface of the portion of the glass bulb that is sealed to the wire 22 is excessively uneven (the surface is too rough), bubbles are likely to be formed because the glass system cannot enter the concave portion. Since this bubble also becomes a cause of leakage, it is not desirable. The results of the measurement were collated, as shown in Fig. 37, and the correlation between the roughness of the surface 20 and the strength N of the peeling was found. (Description of Backlight Unit) Fig. 38 is an exploded perspective view showing a schematic configuration of a backlight unit and the like according to an embodiment of the present invention, and Fig. 39 is a view showing an installation state of the cold cathode fluorescent lamp. 60 200949892 As shown in Fig. 38, the backlight unit 1 according to an embodiment of the present invention is basically a backlight unit ′ for a liquid crystal television, and the structure thereof is based on the structure of a conventional backlight unit. The backlight unit 1 is provided with an external container 丨1, a diffusion plate 5 1200, a diffusion sheet 1300, and a lens 1400', and is disposed on the back surface of the liquid crystal panel 1500. The external storage device 1100 is a box made of white polyethylene terephthalate (PET) resin, as shown in Fig. 39, which is composed of a slightly square reflecting plate 1110 and a periphery surrounding the reflecting plate 1110. The side plates 112 〇 to 115 〇 10 are formed. In the interior of the external container 1100, for example, a plurality of cold cathode fluorescent lamps of the first embodiment are provided in parallel, and the light of the cold cathode fluorescent lamps 1 is from the opening of the external container 1100. 1160 is emitted toward the diffusion plate 1200. In the reflecting plate 1110, a set of sockets 1600 are disposed at positions corresponding to the mounting positions 15 of the respective cold cathode fluorescent lamps. For example, each of the sockets 1600 is formed by bending a copper alloy such as iron bronze or a plate made of aluminum, and a pair of holding pieces 1610 and 1620 and the lower end edges of the holding pieces 1610 and 1620. The connected connecting piece 1630 is constructed. In the holding pieces 161, 162, a recessed portion in the shape of a cold cathode fluorescent lamp is provided, and if the cold 20 cathode fluorescent lamp 1 is fitted into the concave portion, the elastic force of the holding pieces 1610, 1620 is exerted. The aforementioned cold cathode fluorescent lamp can be held in the socket 16 and can be electrically connected to the aforementioned socket 16 and the power supply terminal 30. In the cold cathode fluorescent lamp unit mounted on the backlight unit 1 , power is supplied from the socket 16 via the lighting circuit (not shown) of the backlight unit 1000. 61 200949892 The diffuser plate 1200 is a plate made of polycarbonate (PC) resin, and is disposed so as to close the opening 1160 of the outer container 1100. The diffusion sheet 1300 is made of a polycarbonate resin, and the lens 1400 is made of an acrylic resin, and each of the diffusion sheets 1300 is disposed so as to overlap the diffusion plate 1200 in this order. 5 or more, although the form of the backlight unit for carrying out the present invention has been specifically described, the backlight unit of the present invention is not limited to the above embodiment. For example, the backlight unit is not limited to the direct type, and the light guide plate may be disposed on the back surface of the liquid crystal panel, and the edge light mode of the cold cathode fluorescent lamp 1 is disposed on the end surface of the light guide plate (or Satelite method © 10). Or a light guide plate type) backlight unit. (Description of Liquid Crystal Display Device) Fig. 40 is a partially cutaway perspective view showing a liquid crystal display device according to an embodiment of the present invention. As shown in FIG. 40, the liquid crystal display device 2000 according to an embodiment of the present invention is, for example, a 32-inch liquid crystal television, and has a liquid crystal display unit 2100 including a liquid crystal panel or the like, and is disposed on the liquid crystal panel. The backlight unit 1A of the embodiment and the lighting circuit 2200 on the back side of the unit 2100. © The liquid crystal display unit 2100 is a well-known object, for example, a color filter substrate, a liquid crystal, a TFT substrate, a drive module, etc. (not shown in FIG. 20), and forms a color image based on an external image signal. . The lighting circuit 2200 lights the cold cathode discharge lamp 100 inside the backlight unit 1 . The above has been specifically described based on the form of the liquid crystal display device embodying the present invention. However, the liquid crystal display device of the present invention is not limited to the above embodiment. [Industrial Applicability] The cold cathode discharge lamp, the backlight unit, and the liquid crystal display device of the present invention can be fully utilized in the field of illumination. [Brief Description of the Drawings] Fig. 1 is a partially cutaway perspective view showing a cold cathode fluorescent lamp according to an embodiment of the present invention. Fig. 2 is an enlarged cross-sectional view showing the end of one of the cold cathode fluorescent lamps. Ο Fig. 3 is a perspective view showing the cylindrical gold 10 of the power supply terminal in the cold cathode fluorescent lamp. Fig. 4 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 1. Fig. 5 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 2. Fig. 6 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 3. ® Figure 7 is a perspective view showing a film member constituting an electrical terminal in a cold cathode fluorescent lamp. Fig. 8 is a perspective view showing the end portion of one of the cold cathode fluorescent lamps of Modification 4. Figure 9 is an enlarged cross-sectional view showing the end of one of the cold cathode fluorescent lamps. Fig. 10 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 5. Fig. 11 is a large cross-sectional view showing the end of one of the cold cathode fluorescent lamps of the modified example 6 in 2009. Fig. 12 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 7. Fig. 13 is a enlarged cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of Modification 8. Fig. 14 is a perspective view showing a power supply terminal in the cold cathode fluorescent lamp of Modification 9. Fig. 15 is a perspective view showing a power supply terminal in the cold cathode fluorescent lamp of Modification 10. Fig. 16 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 11. Fig. 17 is a perspective view showing the cylindrical metal of the power supply terminal in the cold cathode fluorescent lamp. Fig. 18 is a cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of Modification 12. Fig. 19 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 13. Fig. 20 is a perspective view showing a cylindrical metal of a power supply terminal in a cold cathode fluorescent lamp. Fig. 21 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 14. Fig. 22 is a perspective view showing the end of one of the cold cathode fluorescent lamps of Modification 15. Fig. 23(a) and Fig. 23(b) are perspective views showing a portion of the cold cathode fluorescent lamp of the modified example 16 in 200949892. Fig. 24 is a perspective view showing the end of one of the cold cathode fluorescent lamps of Modification 17. Fig. 25 is a perspective view showing a power supply terminal of the cold cathode fluorescent lamp of Modification 18. Fig. 26 is a view showing the state before and after the installation of the cold cathode fluorescent lamp with the power supply terminal. Fig. 27 is a enlarged cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of Modification 19. 10 Fig. 28 is a perspective view showing one end portion of the cold cathode fluorescent lamp of Modification 20. Fig. 29 is an enlarged cross-sectional view showing one end portion of the cold cathode fluorescent lamp of Modification 20. &quot; Fig. 30 is a cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of Modification 21. Fig. 31 is a enlarged cross-sectional view showing the end portion of one of the cold cathode fluorescent lamps of Modification 22. 32(a) to (c) are enlarged cross-sectional views showing a cold cathode fluorescent lamp for reviewing the heat radiation effect of the power supply terminal of the present invention. 20 Fig. 33 shows an enlarged cross-sectional view of the cold cathode fluorescent lamp used to examine the correlation between the surface roughness Ra and the peeling strength N. Fig. 34 is a view for explaining a method of measuring the surface roughness Ra. Fig. 35 is a view for explaining a method of measuring the peeling occurrence strength N. Fig. 3 shows the measurement of the surface roughness R a and the peeling occurrence strength N 65 200949892 Results. Fig. 37 is a graph showing the relationship between the surface roughness Ra and the peeling occurrence strength N. Fig. 3 is an exploded perspective view showing a schematic configuration of a backlight unit and the like according to an embodiment of the present invention. Fig. 39 is a view showing the installation state of the cold cathode fluorescent lamp. Fig. 40 is a partially cutaway perspective view showing a liquid crystal display device according to an embodiment of the present invention. Fig. 41 is an enlarged cross-sectional view showing the end portion of one of the cold cathode discharge lamps of the conventional electric terminal. Figure 42 is an enlarged cross-sectional view showing the end of one of the conventional cold cathode discharge lamps to which the electric terminals are attached. [Main component symbol description] 1 Cold cathode fluorescent lamp 24 Bottom 10 Glass bulb 25 Internal wire 11 Glass bulb body 26 External wire 12 Sealing portion 27 Sealing portion 12a Slit/recessed portion 30 Feeding terminal 12b Solder ball 31 Tube 13 Phosphor layer 32 film 20 hollow electrode 32a joint portion 21 electrode body 32b film portion 22 wire 33 cylindrical metal 23 tube portion 34 slit 66 200949892

50 cold cathode fluorescent lamp 86 connection terminal 51 power supply terminal 91 power supply terminal 52 joint portion 93 connection portion 53 film portion 95 lead portion 54 film 96 surface contact portion 55 cylindrical metal 101 power supply terminal 60 cold cathode fluorescent lamp 103 connection portion 61 Power supply terminal 105 lead-out portion 62 joint portion 106 planar contact portion 63 film portion 201 power supply terminal 64 film 203 connection portion 65 cylindrical metal 203a through hole 70 cold cathode fluorescent lamp 205 lead-out portion 71 power supply terminal 301 power supply terminal 72 joint portion 303 Connection portion 73 cylindrical metal 401 power supply terminal 74 slot 403 connection portion 81 power supply terminal 405 lead-out portion 82 cylindrical body 406 elastic holding portion 83 connection portion 406a base portion 84 clip portion 406b, 406c elastic holding piece 84a free end portion 501 power supply terminal 84b Bending portion 503 Connecting portion 84c Scoring 505 Deriving portion 67 200949892 506 Elastic holding portion 834, 835 Second cylindrical portion 506a Base portion 836, 837 Height difference 506b, 506c Elastic holding piece 841 Slot portion 801 Cylindrical metal 842 '843 End edge 802 Feed terminal 844 recess 803 cylindrical body 845 convex 804 first tubular portion 851 end portion 805 second tubular portion 852 chamfered portion 806 if? low difference 861 end portion 811 cylindrical body 871 cylindrical body 812 power supply terminal 872 slit portion 813 first cylindrical portion 873 cylindrical portion 814 Second tubular portion 874 elastic tongue 815 south low 875 slit portion 821 cylindrical body 876 electric terminal 822 electric terminal 881 cylindrical body 823 first tubular portion 882 linear elastic material 824 second tubular portion 883 first tubular portion 825 Second tubular portion 884 Second tubular portion 826 ' 827 Height difference 891 cylindrical body 828 concave portion 892 plate-shaped elastic material 831 cylindrical body 893 first cylindrical portion 832 electric terminal 894 second cylindrical portion 833 first cylindrical portion 895 slit ❿

68 200949892 1000 Backlight unit 1610, 1620 Holder 1100 External storage 1630 Connecting piece 1110 Reflecting plate 1640 End face 1120~1150 Side plate 2000 Liquid crystal display device 1160 Opening 2100 Liquid crystal face unit 1200 Diffuser 2200 Lighting circuit 1300 Diffuser S Contact portion 1400 lens ε outer peripheral surface of the entire area 1500 liquid crystal panel 1600 socket 69

Claims (1)

200949892 VII. Patent application scope: 1. A cold cathode fluorescent lamp, which is provided with a glass bulb, hollow electrodes respectively disposed inside the two ends of the glass bulb, and disposed outside the two ends of the glass bulb and The lead wire of the hollow electrode is connected to a 5-electrode terminal, wherein the feed-through terminal has a conductive cylindrical body disposed to surround the outer peripheral surface of the glass bulb, the cylindrical system being at least opposite to the wire in the glass bulb The entire outer peripheral surface of the glass bulb is substantially non-contact. 2. The cold cathode fluorescent lamp of claim 1, wherein the inner surface of the cylindrical body 10 is in close contact with the outer peripheral surface of the glass bulb opposite to the hollow electrode. 3. The cold cathode fluorescent lamp according to claim 1, wherein the tubular system has a first tubular portion and a second tubular portion extending from the first tubular portion in the axial direction of the tubular body. The tubular portion is larger in outer diameter than the first cylindrical portion of the fifteenth portion. 4. The cold cathode fluorescent lamp of claim 1, wherein the tubular system has a first tubular portion, and one of the two sides extending from the first tubular portion in the axial direction of the cylindrical body The second tubular portion is larger than the first tubular portion in the outer diameter of each of the pair of second tubular portions. The cold cathode fluorescent lamp according to any one of claims 1 to 4, wherein the cylindrical system has a slit portion in the axial direction thereof and has a substantially C-shaped cross section. 6. The cold cathode fluorescent lamp of claim 5, wherein the cylindrical system is disposed across the slit portion while sandwiching the slit portion and facing a portion of one of the pair of end edges 70 200949892 One of the pair of snaps is engaged with each other. 7. The cold cathode fluorescent lamp of claim 6, wherein one of the cylindrical bodies forms a concave portion on the edge of the end portion 5 opposite to the slit portion, respectively, and is in another One of the edges of the edge is formed with a convex portion. 8. The cold cathode fluorescent lamp of claim 5, wherein the cylindrical body is chamfered or octagonal at least at an inner surface of an end portion on a side opposite to a side of the axial direction of the wire. 9. The cold cathode fluorescent lamp according to any one of claims 1 to 4, wherein the cylindrical body has a plurality of elastic tongues disposed along a circumferential direction, thereby multiplicating the elasticity The tongue holds the outer surface of the glass bulb. 10. The cold cathode fluorescent lamp of claim 9, wherein the front end of the elastic tongue is expanded in a shape of a bar. A cold cathode fluorescent lamp according to claim 1 or 2, wherein the cylindrical system is formed of a metal material wound in a spiral shape. 12. The cold cathode fluorescent lamp of claim 11, wherein the cylindrical body is formed by a linear or strip-shaped elastic material in close contact with the axial direction of the cylindrical body. The cold cathode fluorescent lamp according to claim 1 or 2, wherein the cylindrical system has a conductive film formed of solder or a main component of copper or silver on the outer peripheral surface of the glass bulb, and A thin metal formed by a conductive film interposed therebetween. 14. The cold cathode fluorescent lamp of claim 13, wherein the portion of the cylindrical body 71 200949892 that is not in contact with the outer peripheral surface of the glass bulb does not form the electric film. The cold cathode fluorescent lamp of claim 5, wherein only the portion of the inner surface of the cylinder is in contact with the surface of the bulb. 5. The cold cathode fluorescent lamp of claim 15, wherein the cylindrical system has an inner surface protruding from the inner side in the radial direction and facing the entire outer peripheral surface of the glass bulb opposite to the wire in the glass bulb. The outer peripheral surface of the glass bulb is replaced by a supporting member supported by the glass bulb. The cold cathode fluorescent lamp of claim 2, wherein the branching member is configured to fold the portion of the cylindrical body and press the portion of the crucible to the periphery of the glass bulb. Face. 18. The cold cathode fluorescent lamp of claim 16, wherein the support member is formed from one end side of the cylindrical body and extends from the other end side, and is formed by bending from the end side ί5_bubble side A plurality of ribbons. 19. The cold cathode fluorescent lamp of claim 16, wherein the support member is formed by folding a portion of the cylindrical body and pressing the bent portion to the outer periphery of the glass bulb. The surface is formed by a plurality of ten members which protrude from the outer peripheral side of the glass bulb formed on the inner surface of the cylindrical body. For example, the cold cathode glory lamp of claim i, wherein the wire has a sealing portion on the outer diameter that is larger than a portion sealed to the glass bulb at a portion joined to the feeding terminal, the sealing portion At least part of the department is formed by riding material, iron material or Lai. 72 200949892 21. A cold cathode fluorescent lamp as claimed in item i of the patent application ... an external wire formed of a recording material, an iron material or (d) and connected to the power supply wire, and connected and connected to the external wire An internal wire bonder joined to the hollow electrode, having a seal portion having a larger outer diameter than the wire and forming the cold cathode fluorescent lamp according to claim 20 or 21 Wherein, the filling portion is embedded in the end portion of the glass bulb, and is closely sealed with the bottom portion thereof, or is closely attached to the bottom surface thereof and has a gap in the radial direction of the wire to be buried. 23. The cold cathode f-light lamp of claim 2 or 21, wherein the seal 10 is provided with a gap between the end of the glass bulb. 2 4 . The cold cathode fluorescent lamp of claim 23, wherein the slit is 0.1 mm to 0.5 mm. 25. The cold cathode fluorescent lamp of claim 20 or 21, wherein the cross section of the present sealing portion is perpendicular to the axis of the wire, and the largest diameter in the dimension is greater than the maximum outer diameter of the wire. It is large 'but smaller than the maximum outer diameter of the glass bulb. 26. The cold cathode fluorescent lamp of claim 20, wherein the wire is an external wire formed by a recording material, a ferrous material or a forged wire and connected to the electrical terminal, and the external wire a different type of material and having an inner lead joined to the hollow electrode to be joined, and having a sealing portion on the outer portion that is larger than the outer diameter of the outer portion, and the thermal conductivity of the outer lead is higher than the The internal conductor has a low thermal conductivity. 27. The cold cathode fluorescent lamp of claim 21, wherein the wire is 73 200949892, an external wire formed of a nickel material, an iron material or nickel plating and connected to the power supply terminal, and the external wire An inner conductor formed by a different material and joined to the hollow electrode is joined and the outer conductor is thinner than a line of the inner conductor, and the thermal conductivity of the outer conductor is higher than the thermal conductivity of the inner conductor small. 28. The cold cathode fluorescent lamp of claim 1, wherein the wire has a surface roughness of at least 0.2 Ra to 0.8 Ra which is sealed to a portion of the glass bulb. 29) The cold cathode fluorescent lamp of claim 28, wherein the wire: - the end portion is spliced and fixed to the hollow electrode, and the surface of the portion 1 is 0.2 Ra to 〇.8 Ra, and the chamfer size is Length in the radial direction" 0.08mm~〇.l5mm 'The length in the axial direction is 〇lmm~〇25. 30. For the cold cathode fluorescent lamp of the scope of patent application, the power supply is 15 20 20 The sub-portion has a connecting portion extending from the cylindrical body to the side of the axial direction of the cylindrical body, and 4 is a portion where the one of the wires is connected. 31. The cold cathode fluorescent lamp of claim 1, wherein the tubular system of the final electric multi-child is externally inserted into the outer periphery of the creeping portion of the glass bulb, wherein the feeding terminal has the cylindrical body A strip-shaped lead-out portion that protrudes from the outer side in the axial direction of the cylindrical body, and a connecting portion that is provided on the front portion of the lead-out portion and that is connected to one of the wires. c 32. If the cold cathode of the third or third paragraph of the patent application is applied, the ancient woman; the heat transfer rate of the joint is the heat transfer rate of the wire, «5^. 33. If the cold cathode fluorescent lamp of the 32nd patent application is applied, the heat transfer rate of the joint of the tubular raft is 75W/(m · κ) &quot;35W/(m · κ) 74 200949892 Moreover, the conductivity is 9xl06S/m~65xl06S/m. 34. The cold cathode fluorescent lamp of claim 30, wherein the connecting portion forms a U-shaped portion in a manner close to a peripheral surface of a portion of the wire, and a portion of the U-shaped portion is interstitially formed The wire is connected. The cold cathode fluorescent lamp of claim 30, wherein the connecting portion forms a cylindrical portion in such a manner as to surround the outer peripheral surface of one of the wires, and one of the cylindrical portions is partially The gap is filled into the wire. 36. The cold cathode fluorescent lamp of claim 31, wherein the connecting portion 10 is formed by bending a front end surface of one of the wires to be bent from a front end of the lead portion. 37. The cold cathode fluorescent lamp of claim 36, wherein the connecting portion has a pair of holding pieces for holding the outer peripheral surface of the wire, and the pressing force of the pair of holding pieces for the wire is at least More than 100 g, and 挟15 holds the wire and connects. 38. The cold cathode fluorescent lamp of claim 31, wherein the connecting portion is formed by bending a portion beyond the leading end of the lead portion by contacting one end surface of the lead wire . 39. The cold cathode fluorescent lamp of claim 31, wherein the connecting portion 20 is formed by bending a portion beyond a front end surface of the lead portion in such a manner as to contact an outer peripheral surface of a portion of the lead. 40. The cold cathode fluorescent lamp of claim 31, wherein the connecting portion has a connecting surface formed with a through hole or a cutting portion, and the wire is inserted into the through hole or the cutting portion to exceed the lead The portion of the front end of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of the portion of 41. The cold cathode fluorescent lamp of claim 30, wherein the conductive wire has a seal on the outer portion that is larger than the portion sealed to the light bulb. And filling a portion, and one of the connecting portions is in contact with the sealing portion. 42. The cold cathode fluorescent lamp of claim 30, wherein the wire is an external wire to which the power supply terminal is connected, and an inner wire to which the 10 hollow electrode is bonded is joined, and The joint portion has a seal portion having a larger outer diameter than the inner wire, and one of the joint portions is in contact with the seal portion. 43. The cold cathode fluorescent lamp of claim 30, wherein the connecting portion is further connected to the outer peripheral surface of one of the wires 15 by welding or soft metal. 44. The cold cathode fluorescent lamp of claim 1, wherein the glass bulb is formed of a glass material having a sodium oxide content ranging from 3 wt% to 20 wt%. 45. The cold cathode fluorescent lamp of claim 1, wherein the glass lamp 20 is formed of a glass material having a content of sodium oxide in the range of 5 wt% to 20 wt%. 46. A backlight unit comprising a cold cathode fluorescent lamp as claimed in claim 1 of the patent application as a light source. 47. A liquid crystal display device, which is provided with a liquid crystal display panel, and as such as 76 200949892 The backlight unit of claim 46, wherein the backlight unit has an external storage device for accommodating a plurality of cold cathode fluorescent lamps as claimed in claim 1, wherein the external storage device is disposed on the liquid crystal display panel On the back. 77