CN1581595A - Connector and liquid crystal display device using same - Google Patents

Abstract

The present invention provides a connector and a liquid crystal display device using the connector. The purpose is to provide a small DIP type male connector that can adapt to high voltage. The two pin connectors (4) in the box-shaped base housing (3) with the opening (5) at the front have: contact pins (15) that extend from the rear of the base housing (3) The side wall (6) extends toward the opening (5); the lead parts (17, 19), which extend downward from the rear side wall (6), penetrate the printed circuit board (53) from one side (53a) and are welded on the other On one side (53b); the female connector (2) can be inserted and fitted into the opening (5), and a lower partition (50) is provided at the bottom of the base housing (3). The lower partition (50 ) is disposed between the two lead parts (17, 19), protrudes downward and penetrates the printed circuit board (53).

Description

Connector and liquid crystal display device using the same

technical field

The present invention relates to a connector suitable for increasing the voltage of various electronic devices and a liquid crystal display device using the same.

Background technique

Patent Document 1: Patent No. 3062924

Patent Document 2: Patent No. 3262726

In recent years, for example, in notebook computers, the liquid crystal panel has tended to be as large as possible within the allowable range of the main body frame in order to improve performance. With the expansion of the liquid crystal panel, the backlight (backlight) which is the light source of the liquid crystal panel requires a high voltage. On the other hand, the inverter board that supplies power to the backlight is installed in the above-mentioned main body frame. However, if the liquid crystal panel is enlarged as described above, the installation area of the inverter board is limited, so it has to be made small. change.

With the miniaturization of such inverter boards, small and high-voltage connectors have been developed as connectors for electrically connecting the inverter board and the backlight (see Patent Document 1 and Patent Document 2). Since these connectors can be used on the inverter substrate as a double-sided substrate, it is a so-called SMT (Surface Mount Technology: Surface Mount Technology) type, and the male connector is mounted on a printed wiring board for electrical connection. face.

Here, the liquid crystal display device is composed of a liquid crystal panel, a backlight, an inverter board, and a power supply board that supplies power to both the inverter board and the backlight. In order to reduce the size and cost of the liquid crystal display device as a whole, it can be considered to integrate the conventional inverter substrate as a double-sided substrate and the power supply substrate as a single-sided substrate into a single-sided substrate to achieve miniaturization and cost reduction. For this reason, the so-called DIP (Dual Inline Package: Dual Inline Package) type must be used instead of the above-mentioned SMT type as the connector for electrically connecting the single-sided substrate and the backlight. The device is mounted on the surface without printed wiring, and the pin connector is penetrated through the board and soldered to the printed wiring on the opposite side. However, among the conventional DIP type connectors, there is no product that is small and suitable for high voltage like the above-mentioned SMT type.

On the other hand, in order to further improve the performance of the liquid crystal display device, for example, it may be considered to arrange more straight tube type backlights and U-shaped backlights directly under the liquid crystal screen. Therefore, it is necessary to mount a large number of male connectors at narrow intervals on the inverter board, and a smaller product suitable for high voltage and heat is required. However, in the SMT type, there is a limit to the degree of small size and high voltage compatibility, and there is no suitable product in the conventional DIP type.

Contents of the invention

The present invention is proposed in view of the above-mentioned problems in the past, and its purpose is to provide a high-voltage adaptable DIP type male connector that can increase the space distance and creepage distance and can adapt to high voltage while being miniaturized. And a liquid crystal display device using the connector.

In order to achieve the above object, in the male connector of the first structure of the present invention, the two needle connectors housed side by side in a box-shaped base housing (base housing) with an opening at the front have: contact pins part, which extends from the rear side wall of the above-mentioned base housing to the above-mentioned opening part; the lead part, which extends downward from the above-mentioned rear side wall, penetrates the printed circuit board from one side and is welded on the other side; the female connector can Insert and fit into the above opening. In addition, a lower spacer is provided at a lower portion of the base case. The lower spacer is arranged between the two lead parts, protrudes downward, and penetrates the printed circuit board.

According to this first structure, between the two lead parts that penetrate the printed circuit board from one side and are soldered to the other side, a lower spacer that penetrates the printed circuit board is provided as the lower part of the base case. Therefore, While realizing the DIP type, the space distance and the creepage distance can also be ensured, and the miniaturization can be realized and high voltage can be applied. In addition, since the DIP type uses a larger amount of solder than the SMT type, it has high mechanical strength, and at the same time, it is also strong in resistance to thermal fluctuations, and it is also advantageous in that solder cracking is less likely to occur.

In this first configuration, it is preferable that the lower spacer protrudes downward beyond the lower ends of the two lead parts. In addition, it is preferable that the lower end portion of the lower partition plate extends in the lateral direction. In addition, it is preferable that the two lead parts are bent and extended in a state of being away from each other in the lateral direction, and the pitch of the soldered part is larger than the pitch of the two contact pin parts.

The liquid crystal display device according to the second configuration of the present invention includes: a liquid crystal panel; a backlight serving as a light source for the liquid crystal panel; and a single-sided substrate having printed wiring for a power supply circuit for supplying power to the backlight and an inverter circuit on one surface. . Furthermore, the above-mentioned male connector is mounted on the above-mentioned single-sided board by passing the above-mentioned two lead parts of the male connector of the first structure through the above-mentioned single-sided board and soldering to the output part of the above-mentioned inverter circuit, and The two socket joints of the above-mentioned female connector in which the above-mentioned two contact pins are fitted are connected to the above-mentioned backlight through electric wires.

According to this second structure, by using the male connector of the above-mentioned first structure, the inverter substrate and the power supply substrate are integrated into a single substrate, so the miniaturization of the entire liquid crystal display device relative to the size of the liquid crystal panel can be further promoted. and cost reduction of the liquid crystal display device as a whole.

The liquid crystal display device of the third configuration of the present invention has: a liquid crystal panel; a backlight serving as a light source of the liquid crystal panel; a power supply substrate having printed wiring for a power supply circuit supplying power to the backlight on one side; an inverter substrate, It has, on one side, printed wiring of an inverter circuit that supplies power to both the power supply circuit and the above-mentioned backlight. And, the above-mentioned male connector is mounted on the above-mentioned inverter board by passing the above-mentioned two lead parts of the above-mentioned male connector of the first structure through the above-mentioned inverter board and soldering to the output part of the above-mentioned inverter circuit. The receptacle joint of the above-mentioned female connector fitted with the above-mentioned contact pin portion is connected to the above-mentioned backlight through an electric wire.

According to this third structure, by mounting a large number of male connectors of the above-mentioned first structure on the inverter substrate at narrow intervals, a large number of backlights can be arranged directly under the liquid crystal screen, so that the liquid crystal display can be further improved. Displays the performance of the device.

Description of drawings

Fig. 1 is a perspective view of a male connector according to a first embodiment of the present invention.

Fig. 2 is a perspective view of a female connector inserted and fitted into the male connector shown in Fig. 1 .

Fig. 3 is a top sectional view of the male connector shown in Fig. 1 .

FIG. 4 is a sectional view of the male connector shown in FIG. 1 along line IV-IV in FIG. 1 .

FIG. 5 is a cross-sectional view of the male connector shown in FIG. 1 along line V-V in FIG. 1 .

Fig. 6 is a perspective view of a pin joint of the male connector shown in Fig. 1 .

Fig. 7 is a perspective view showing a modified example of the pin joint of the male connector shown in Fig. 1 .

Fig. 8 is a top sectional view of a female connector inserted and fitted into the male connector shown in Fig. 1 .

Fig. 9 is a side sectional view showing a state where the female connector is inserted and fitted into the male connector shown in Fig. 1 .

Fig. 10 is a plan sectional view of a state where the female connector is inserted and fitted into the male connector shown in Fig. 1 .

Fig. 11 is a rear sectional view of the male connector shown in Fig. 1 .

Fig. 12 is a rear sectional view showing a modified example of a lower partition in the male connector shown in Fig. 1 .

Fig. 13 is a rear sectional view showing another modified example of the lower partition in the male connector shown in Fig. 1 .

Fig. 14 is a rear sectional view showing still another modified example of the lower partition in the male connector shown in Fig. 1 .

Fig. 15 is a bottom view of the male connector shown in Fig. 1 .

16 is a perspective view of a liquid crystal display device according to a second embodiment of the present invention.

17 is a schematic diagram of a liquid crystal display device according to a third embodiment of the present invention.

18 is a schematic diagram of a liquid crystal display device according to a fourth embodiment of the present invention.

Symbol Description:

1: male connector; 2: female connector; 3: base shell; 4: pin connector; 5: opening; 6: rear side wall; 15: contact pin; 17, 19: lead wire; 19 : welding part; 19a: lower end of lead part (lower end of welding part); 22: socket connector; 41: LCD screen; 42, 72: backlight; 45: wire; 50: lower partition; 50a: lower partition Lower end; 53, 63, 73: printed circuit board (single-sided substrate, inverter substrate).

Detailed ways

First, a male connector as a first embodiment of the present invention will be described. As shown in the oblique view of FIG. 1, the male connector accommodates the pin connector 4 in a box-shaped (flat square cylindrical) insulating base case 3 with an opening 5 at the front, as seen in the oblique view of FIG. 2. The female connector 2 shown in the figure is inserted and fitted into the opening 5 . As shown in the top sectional view of FIG. 3 , two needle connectors 4 are housed side by side in the base case 3 and have contact pins extending from the rear side wall 6 of the base case 3 toward the opening 5 . 15 and lead parts 17,19. As shown in the back sectional view of Figure 11, the lead parts 17, 19 extend downward from the rear side wall 6, penetrate the printed circuit board 53 from one side (here, the upper side) 53a and are welded on the other side (here, the lower side) 53b on.

Here, in the lower part of the base case 3, there is provided a lower spacer 50 which is arranged between the welding parts 19 and 19 of the two lead parts, protrudes downward, and penetrates the wiring board 53. The lower spacer 50 is smaller than the The lower ends 19a of the two lead parts 17, 19 protrude further downward. The placement position of the lower spacer 50 is not limited to just at the center between the welding parts 19, 19 of the two lead parts, as long as it is the solder (with the width of the printed land pattern) that welds the two welding parts 19, 19 Same) between 51 and 51, there can also be an offset in the left and right directions. As shown in FIG. 12 , the lower end 50 a of the lower partition plate 50 may extend laterally, or as shown in FIG. 13 , only one side thereof may extend laterally. In addition, as shown in FIG. 14, the lower partition plate 50 may also be formed in a bifurcated shape, and a claw protruding outward in the lateral direction may be provided on the lower end portion 50a so that it can be inserted into the printed circuit board 53 (FIG. 10). The hole is bent inward in the transverse direction. In addition, as shown in FIG. 3, the two lead parts 17, 19 are bent and extended in a state away from each other in the lateral direction on the middle part 17. As shown in FIG. The pitch of the needle portions 15 is large.

The male connector 1 and the female connector 2 inserted and fitted therein will be described in more detail. The base housing 3 of the male connector 1, as clearly shown in FIG. Thus, it is disposed between the pin connectors 4, 4 and protrudes longer than the ends 15a, 15a of the contact pins 15, 15. In addition, the two side surfaces of the partition plate 7 form a left-right symmetrical shape with respect to the center line of the base case 3 (see FIG. 10C ). 8, 8 and conical surfaces 9, 9 joined to the base parallel surfaces 8, 8 and forming tapered tapered ends. However, the proportions of the base parallel surfaces 8, 8 and the tapered surfaces 9, 9 in the front-rear direction are not particularly limited. For example, only the very near part of the end 7a may be the tapered surfaces 9, 9, and the remaining parts may be base parallel surfaces. 8, 8, also can be all conical surfaces 9, 9, without base parallel surfaces 8, 8.

In addition, on the inner side surfaces of the two side walls 10, 10 adjacent to the rear side wall 6, locking tabs 28, 28 (FIG. 8) for engaging with the female connector 2 described later are provided. Stop grooves 11, 11, meanwhile, guide grooves 12, 12 are provided on the inner sides of the two side surfaces 10, 10 adjacent to the opening 5. On the other hand, a partition plate 13 extending rearward is provided on the rear side wall 6 . The partition 13 may also have a hollow portion (a portion where the plate is removed) 13a.

The pin connectors 4 and 4 are formed by punching and bending a conductive metal plate of copper or copper alloy (brass, etc.), and are connected to the rear end of the contact pin 15 as shown in the perspective view of FIG. There is a mounting portion 16 with a large width, connecting the lead portions 17 and 19 arranged at the rear of the mounting portion 16, from the middle portion 17 that is bent and extended laterally in opposite directions to each other and from the outer end of the middle portion 17 downwards. The welded portion 19 is formed by bending and extending. And, as shown in FIG. 3 (or as FIG. 4 of the IV-IV sectional view of FIG. 1 ), the two needle connectors 4, 4 keep and fix the mounting parts 16, 16 on the rear side wall 6 in a penetrating state, The contact pins 15, 15 protrude toward the opening 5 in a state parallel to the center line of the base case 3 via the partition plate 7, and at the same time, as shown in FIG. The state configuration, and is accommodated in the base case 3. In addition, in FIG. 6 , the welding portion 19 is temporarily bent forward from the outer end of the middle portion 17 to extend, and then bent and extended downward, but as shown in FIG. 7 , it may be directly downward from the outer end of the middle portion 17. Bend and extend.

As shown in FIG. 3 , the ends 15a, 15a of the contact pin portions 15, 15 of the two pin connectors 4, 4 accommodated and arranged in the base case 3 are located on the rear side than the end 7a of the partition 7 As a result, even if the distance between the two contact pins 15, 15 is reduced, the space distance and the creepage distance between the two ends 15a, 15a can be made long enough, which can effectively prevent high faults caused by voltage. In addition, as shown in FIG. 11, since the spacing between the soldering portions 19, 19 of the two pin contact portions 4, 4 is larger than the spacing between the two contact pin portions 15, 15, even if the two The spacing between the contact pins 15, 15 can also be on the upper side 53a of the printed circuit board 53, ensuring that the space between the two soldering portions 19, 19 is long enough to prevent high voltage faults.

In addition, due to the presence of the spacer 13 provided on the rear side wall 6, on the upper face 53a side of the printed circuit board 53, a sufficient length of the creeping distance between the two soldered portions 19, 19 can be ensured. Therefore, the following structure is formed: even if the base housing 3 is made smaller by narrowing the distance between the two contact pin portions 15, 15, the male connector 1 as a whole is miniaturized, and the upper surface of the printed circuit board 53 On the 53a side, the space distance and creepage distance between the two pin connectors 4, 4 can also be made sufficiently long, which can effectively prevent failures caused by high voltage.

On the other hand, on the lower surface 53b side of the printed circuit board 53, on the surface (the paper surface of FIG. 11 ) that is perpendicular to the printed circuit board 53 and includes the two soldered parts 19 and 19, two soldered parts 19 are soldered. , 19 of the solder (the same width as the printed land pattern) 51, 51 space distance CL between 51 becomes a problem, but according to the male connector of the first embodiment, after penetrating the printed circuit board 53 from the upper surface 53a and soldering Between the two lead portions 17, 19 on the lower surface 53b, a lower spacer 50 that penetrates the printed circuit board 53 as the bottom of the base housing 3 is provided, so while adopting the DIP type, it is also The space distance CL can be ensured on the surface including the above-mentioned two welding parts 19, 19, and it is possible to achieve miniaturization and to be compatible with high voltage.

In particular, in the male connector 1 according to the first embodiment, since the lower partition plate 50 protrudes downward more than the lower ends 19a, 19a of the two lead parts, a longer space distance CL can be ensured. As shown in FIG. 12 , if the lower end portion 50 a of the lower partition plate 50 extends in the lateral direction, a longer space distance CL can be ensured. In addition, in the male connector 1 of the first embodiment, since the pitch of the soldering portions 19, 19 of the two lead portions is formed larger than the pitch of the two contact portions 15, 15, the pitch of the solder 51, 51 ( The pitch of the land pattern) also becomes larger, thereby ensuring a longer space distance CL.

In addition, as shown in the bottom view of FIG. 15, on the lower surface 53b side of the printed circuit board 53, on the lower surface 53b, the creeping distance CD between the two solders 51, 51 becomes a problem. However, according to the first embodiment, In the male connector 1, since the lower partition plate 50 is also fully extended in the front-rear direction, the creepage distance CD can be ensured on the lower surface 53b of the printed circuit board 53 while adopting the DIP type, and the miniaturization can be realized. Adapt to high voltage. In addition, this male connector is a DIP type. As shown in FIG. 11, the solder 51 protrudes and adheres along the welding part 19. Since the amount of solder is more than that of the SMT type, it has strong resistance to thermal fluctuations and is less prone to solder cracking. It is also beneficial in one point.

In addition, as shown in FIG. 1 , reinforcing metal members 20 , 20 are embedded in lower portions of front ends of both side walls 10 , 10 of the base case 3 . As shown in FIG. 5 which is a V-V sectional view, the reinforcing metal member 20 also extends downward, penetrates the printed circuit board 53 of FIG. 11 from the upper surface 53a, and is soldered to the lower surface 53b.

The female connector 2 of FIG. 2 inserted and fitted into the male connector 1 of the first embodiment is composed of a socket housing 21 and two socket joints 22, 22, and the socket housing 21 is inserted and fitted into the male connector. In the opening 5 (FIG. 1) of the device 1; as shown in the top sectional view of FIG. middle.

As shown in Figure 2, the outline shape of the socket housing 21 is a flat cuboid, and the front half is provided with a notch 23 that engages with the partition plate 7 (Figure 3) of the male connector 1, and is formed by a pair of cylinders. The dichotomous shape that shape body 24,24 constitutes. As shown in FIG. 8 , each cylindrical body 24 has a space portion 25 for accommodating and holding the socket connector 22 respectively. The space portion 25 extends to the rear end of the socket housing 21. The opening 26 is inserted and accommodated in the space portion 25 . In addition, an insertion hole 27 for contacting the needle portion 15 ( FIG. 3 ) of the needle connector 4 is provided at the front end portion of each cylindrical body 24 .

On the other hand, locking grooves 11, 11 (FIG. ) in the locking tabs 28,28. In addition, as shown in FIG. 2 , on both sides of the rear portion of the socket housing 21, guide grooves 12, 12 (Fig. 1) the guide protrusions 29,29 in. The two opposing side surfaces of the notch portion 23 are formed corresponding to the two side surfaces of the partition plate 7 .

The socket connector 22 of FIG. 8 has a socket part 32 fitted with the contact pin part 15 (FIG. 3) at the front part, a crimping part 33 of the electric wire at the rear part, and a lance to prevent prolapse is provided at the middle part. 34. FIG. 9 shows a side sectional view of the state where the female connector 2 is inserted and fitted into the male connector 1 of the first embodiment, and FIG. 10 shows a top sectional view.

Next, a liquid crystal display device according to a second embodiment of the present invention will be described. As shown in the perspective view of FIG. 16 , this liquid crystal display device has: a liquid crystal panel 41 assembled on a main body frame 40 of a notebook computer or the like; The reflector 44; the single-sided substrate 53 having printed wiring of a power supply circuit for supplying power to the backlight 42 and an inverter circuit on one side (here, the lower side). And, by penetrating the single-sided substrate 53 from the upper surface 53a and soldering the welding parts 19 (FIG. 11) of the two lead parts of the male connector 1 of the first embodiment to the output part of the inverter circuit on the lower surface 53b, Install the male connector 1 on the single-sided substrate 53, and connect the two socket joints 22 (FIG. 8) of the above-mentioned female connector 2 that are fitted with the above-mentioned two contact pins 15 (FIG. 3) to the backlight through wires 45. Light 42 on. In addition, the reinforcing metal member 20 (FIG. 1) of the male connector 1 also penetrates the single-sided substrate 53 from the upper surface 53a and is welded to the lower surface 53b. In addition, the single-sided substrate 53 may be attached to the main body frame 40 with the printed wiring on the upper side, that is, the base case 3 ( FIG. 1 ) of the male connector 1 is on the lower side.

When the female connector 2 is inserted from the opening 5 ( FIG. 1 ) of the base housing 3 of the male connector 1 , the tapered surfaces 31 , 31 ( FIG. 8 ) of the notch 23 and the tapered surfaces 9 , 9 of the partition plate 7 (Fig. 3) snapping, at the same time, the guide protrusions 29, 29 (Fig. 2) on both sides are snapped into the guide grooves 12, 12 (Fig. 1), and are guided to the correct fitting position, the male connector 1 The contact pins 15, 15 (Fig. 3) of the two needle connectors 4, 4 enter into the respective cylindrical bodies 24, 24 through the sockets 27, 27 (Fig. 8), and as shown in Fig. 10, fit into the The socket connectors 22 , 22 are electrically connected to the socket portions 32 , 32 . Moreover, once the mating of the male connector 1 and the female connector 2 is completed, the two locking protrusions 28, 28 of the female connector 2 are engaged in the locking grooves 11, 11 of the male connector 1, according to The click feeling at the time of this engagement can confirm the correct fitting state.

In the liquid crystal display device of the second embodiment, the pin joints 4, 4 of the male connector 1 and the receptacle joints 22, 22 of the female connector 2, which are fitted and connected as described above, have sufficiently long spatial distances and creeping distances, respectively. Therefore, even if high-voltage power is supplied to the backlight 42 through the power supply circuit and the inverter circuit of the single-sided substrate 53 in FIG. In addition, by using the male connector 1 of the first embodiment, the inverter substrate and the power supply substrate are integrated into a single substrate 53, so that the miniaturization and size reduction of the entire liquid crystal display device relative to the size of the liquid crystal panel 41 can be further promoted. Cost reduction of the liquid crystal display device as a whole.

Next, a liquid crystal display device as a third embodiment of the present invention will be described. Compared with the liquid crystal display device of the second embodiment shown in FIG. 16 , this liquid crystal display device differs in the structure of each part in order to arrange a plurality of backlights 42 directly under the liquid crystal panel 41 . The different parts are shown in FIG. 17 . part. The liquid crystal display device has: a liquid crystal screen 41 (Fig. 16); a plurality of (here 6) straight tube-shaped backlights 42 and reflectors 64 thereof which become the light source of the liquid crystal screen; a power supply substrate (not shown), which There is printed wiring of a power supply circuit that supplies power to the backlight 42 on one side; and an inverter substrate 63 that has an inverter that supplies power to the power supply circuit and the backlight 42 on one side (here, the bottom side) at the same time. printed circuit wiring.

Furthermore, as for each backlight 42, the welding part 19 (FIG. 11) of the two lead parts of the male connector 1 of the said 1st Embodiment penetrates the inverter board|substrate 63 from the upper surface 63a, and is welded to the inverter of the lower surface 63b. On the output part of the inverter circuit, the male connector 1 is installed on the inverter substrate 63, and one socket joint 22 (Fig. 8) of the above-mentioned female connector 2 fitted with one of the above-mentioned contact pin parts 15 (Fig. 3) It is connected to the right terminal of the backlight 42 through a wire 45 . The left terminal of each backlight 42 is connected to other boards (not shown) by wires 45 or the like, but these sides do not necessarily have to be compatible with high voltage. In addition, the reinforcing metal member 20 (FIG. 1) of the male connector 1 also penetrates the inverter substrate 63 from the upper surface 63a and is welded to the lower surface 63b. In addition, the inverter board 63 may be attached to the main body frame 40 ( FIG. 16 ) with the printed wiring on the upper side, that is, the base case 3 ( FIG. 1 ) of the male connector 1 is on the lower side.

When the female connector 2 is inserted from the opening 5 ( FIG. 1 ) of the base housing 3 of the male connector 1 , the tapered surfaces 31 , 31 ( FIG. 8 ) of the notch 23 and the tapered surfaces 9 , 9 of the partition plate 7 (Fig. 3) snapping, at the same time, the guide protrusions 29, 29 (Fig. 2) on both sides are snapped into the guide grooves 12, 12 (Fig. 1), and are guided to the correct fitting position, the male connector 1 The contact pins 15, 15 (Fig. 3) of the two pin connectors 4, 4 enter into the respective cylindrical bodies 24, 24 through the sockets 27, 27 (Fig. 8), as shown in Fig. 10, a contact pin The portion 15 is fitted into the socket portion 32 of the socket connector 22 to be electrically connected. Moreover, once the mating of the male connector 1 and the female connector 2 is completed, the two locking protrusions 28, 28 of the female connector 2 are engaged in the locking grooves 11, 11 of the male connector 1, according to The click feeling at the time of this engagement can confirm the correct fitting state.

In the liquid crystal display device of the third embodiment, the pin joints 4, 4 of the male connector 1 and the receptacle joints 22, 22 of the female connector 2 that are fitted and connected as described above have sufficiently long spatial distances and creeping distances, respectively. Therefore, even if high-voltage power is supplied to the backlight 42 through the inverter circuit of the inverter board 63 of FIG. 17 , troubles such as short-circuit failure will not occur. In addition, by mounting a large number of male connectors 1 of the first embodiment on the inverter board 63 at narrow intervals, a large number of backlights 42 can be arranged directly under the liquid crystal panel 41 (FIG. 16). Therefore, The performance of the liquid crystal display device can be further improved.

Next, a liquid crystal display device as a fourth embodiment of the present invention will be described. Compared with the liquid crystal display device of the second embodiment shown in FIG. 16, this liquid crystal display device also differs in the structure of each part in order to arrange a plurality of backlights 42 directly under the liquid crystal panel 41. The difference is shown in FIG. part. The liquid crystal display device has: a liquid crystal screen 41 (Fig. 16); a plurality of (here 3) U-shaped backlights 72 and reflectors 64 thereof which become the light sources of the liquid crystal screen; Printed wiring for a power supply circuit that supplies power to the backlight 72 is provided on one side; and an inverter substrate 73 that has an inverter circuit that supplies power to the power supply circuit and the backlight 72 on one side (here, the bottom side) at the same time. printed wiring.

Furthermore, as for each backlight 72, the welding part 19 (FIG. 11) of the two lead parts of the male connector 1 of the said 1st Embodiment penetrates the inverter board|substrate 73 from the upper surface 73a, and is welded to the inverter of the lower surface 73b. On the output portion of the inverter circuit, the male connector 1 is installed on the inverter substrate 73, and the two socket joints 22 (Fig. 8) Connect to the backlight 72 through the wire 45 . Furthermore, the reinforcing metal member 20 (FIG. 1) of the male connector 1 also penetrates the inverter substrate 73 from the upper surface 73a and is welded to the lower surface 73b. In addition, the inverter board 73 may be attached to the main body frame 40 ( FIG. 16 ) with the printed wiring on the upper side, that is, the base case 3 ( FIG. 1 ) of the male connector 1 is on the lower side.

When the female connector 2 is inserted from the opening 5 ( FIG. 1 ) of the base housing 3 of the male connector 1 , the tapered surfaces 31 , 31 ( FIG. 8 ) of the notch 23 and the tapered surfaces 9 , 9 of the partition plate 7 (Fig. 3) snapping, at the same time, the guide protrusions 29, 29 (Fig. 2) on both sides are snapped into the guide grooves 12, 12 (Fig. 1), and are guided to the correct fitting position, the male connector 1 The contact pins 15, 15 (Fig. 3) of the two needle connectors 4, 4 enter into the respective cylindrical bodies 24, 24 through the sockets 27, 27 (Fig. 8), and as shown in Fig. 10, fit into the The socket connector 22 is electrically connected to the socket portions 32 , 32 . Moreover, once the mating of the male connector 1 and the female connector 2 is completed, the two locking protrusions 28, 28 of the female connector 2 are engaged in the locking grooves 11, 11 of the male connector 1, according to The click feeling at the time of this engagement can confirm the correct fitting state.

In the liquid crystal display device of the fourth embodiment, the pin joints 4, 4 of the male connector 1 and the receptacle joints 22, 22 of the female connector 2, which are fitted and connected as described above, have sufficiently long spatial distances and creeping distances, respectively. Therefore, even if high-voltage power is supplied to the backlight 72 through the inverter circuit of the inverter board 73 of FIG. In addition, by mounting a large number of male connectors 1 of the first embodiment on the inverter board 73 at narrow intervals, it is possible to arrange a large number of backlights 72 directly under the liquid crystal panel 41 ( FIG. 16 ). Therefore, The performance of the liquid crystal display device can be further improved.

Claims (6)

1, a kind of male connector, about two pin type joints being contained in side by side in the base housing of anterior case shape for peristome have: contact pin portion, its rear wall from the said base housing extends to above-mentioned peristome; Leading part, it extends downwards from above-mentioned rear wall, and run through printed circuit board and be welded on the another side from one side,

Female connector can insert and be fitted in the above-mentioned peristome,

This male connector is characterised in that,

Be provided with lower partition in the said base lower part of frame, this lower partition is provided between above-mentioned two leading parts, and, outstanding downwards and run through above-mentioned printed circuit board.

2, male connector according to claim 1 is characterized in that,

Above-mentioned lower partition is more outstanding than the lower end of above-mentioned two leading parts.

3, male connector according to claim 1 is characterized in that,

Extend to transverse direction the bottom of above-mentioned lower partition.

4, male connector according to claim 1 is characterized in that,

Above-mentioned two leading parts with each other to transverse direction away from state crooked and extend, the spacing of its welding portion forms greatlyyer than the spacing of above-mentioned two contact pin portions.

5, a kind of liquid crystal indicator has: liquid crystal display screen; Become the backlight of the light source of this liquid crystal display screen; The single face substrate, it has on single face to the power circuit of this backlight power supply and the printed wiring of inverter circuit, it is characterized in that,

By above-mentioned two leading parts of the described male connector of claim 1 being run through above-mentioned single face substrate and being welded on the efferent of above-mentioned inverter circuit, above-mentioned male connector is installed on the above-mentioned single face substrate,

Be connected with above-mentioned backlight by electric wire with two receptacle terminals of above-mentioned two contact pin portions chimeric above-mentioned female connectors.

6, a kind of liquid crystal indicator has: liquid crystal display screen; Become the backlight of the light source of this liquid crystal display screen; Power supply board, it has the printed wiring to the power circuit of this backlight power supply on single face; The inverter substrate, it has the printed wiring of while to the inverter circuit of above-mentioned power circuit and the power supply of above-mentioned backlight on single face, it is characterized in that,

By above-mentioned two leading parts of the described male connector of claim 1 being run through above-mentioned inverter substrate and being welded on the efferent of above-mentioned inverter circuit, above-mentioned male connector is installed on the above-mentioned inverter substrate,

Be connected with above-mentioned backlight by electric wire with the receptacle terminal of above-mentioned contact pin portion chimeric above-mentioned female connector.

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