KR101046010B1 - Connector and liquid crystal display using the same - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a DIP type male connector and the like which can be compact and cope with a high voltage.

A contact pin portion in which two pin contacts 4, which are accommodated in parallel to the left and right in the box-shaped base housing 3 whose front portion is the opening portion 5, extend from the rear side wall 6 of the base housing 3 to the opening portion 5. 15 and lead portions 17 and 19 extending downward from the rear side wall 6 to penetrate the printed wiring board 53 from one side 53a and to be soldered to the other side 53b, A male connector 1 into which the female connector 2 is inserted and fitted into the opening 5. The male connector 1 is disposed between the two lead portions 17 and 19 at the lower portion of the base housing 3, and protrudes downward to print the printed wiring board. The lower partition 50 which penetrates 53 is provided.

Leads, printed wiring boards, lower bulkheads, base housings, pin contacts

Description

Connector and liquid crystal display using the same {ELECTRIC CONNECTOR AND LIQUID CRYSTAL DISPLAY DEVICE}

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

2 is a perspective view of a female connector inserted and fitted into the male connector;

3 is a plan sectional view of the male connector;

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

Fig. 5 is a sectional view taken along line V-V in Fig. 1 of the male connector.

6 is a perspective view of the pin contact of the male connector;

Fig. 7 is a perspective view showing a modification of the pin contact of the male connector.

Fig. 8 is a plan sectional view of the female connector inserted and fitted into the male connector.

Fig. 9 is a side sectional view of a female connector inserted and fitted into the male connector.

Fig. 10 is a plan sectional view of the female connector in which the female connector is inserted and fitted.

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

Fig. 12 is a back sectional view showing a modification of the lower partition wall in the male connector.

Fig. 13 is a rear view showing another modification of the lower partition wall in the male connector.

Fig. 14 is a rear view showing another modification of the lower partition wall in the male connector.

Fig. 15 is a bottom view of the male connector.

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

Fig. 17 is a schematic view 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.

<Explanation of symbols for the main parts of the drawings>

1: male connector

2: female connector

3: base housing

4: pin contact

5: opening

6: rear side wall

15: contact pin part

17, 19: lead portion

19: soldering part

19a: lower end of lead part (lower end of soldered part)                 

22: socket contact

41: LCD screen

42, 72: rear light

45: wires

50: lower bulkhead

50a: lower portion of the lower bulkhead

53, 63, 73: printed wiring board (one side board, inverter board)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector corresponding to high voltage of various electronic devices and a liquid crystal display device using the same.

In recent years, for example, notebook personal computers tend to make the liquid crystal screen as large as possible within the allowable range of the main frame to achieve high performance, and high voltage is required for the rear light serving as a light source with the expansion of the liquid crystal screen. have. On the other hand, the inverter substrate for supplying power to the rear light is assembled in the main body frame, but if the liquid crystal screen is enlarged as described above, the mounting area of the inverter substrate is constrained and must be miniaturized.

With such miniaturization of the inverter substrate, a connector that electrically connects between the inverter substrate and the rear light has been developed that can cope with high voltage in a small size (see Patent Documents 1 and 2). Since these connectors are all used for inverter boards which are double-sided boards, they are so-called SMT types and are mounted on the side where printed wirings to which electrical connectors are to be electrically connected.

[Patent Document 1]

Japanese Patent No. 3062924

[Patent Document 2]

Japanese Patent No. 3262726

Here, the liquid crystal display is constituted by a liquid crystal screen, a rear light, an inverter substrate, and a power substrate for supplying power to the rear light together with the liquid crystal display. In order to further improve the cost reduction, it is conceivable to integrate the inverter substrate, which was a conventional double-sided substrate, and the power supply substrate, which was one side substrate, into one sheet substrate, thereby miniaturization and cost reduction. For this purpose, the so-called DIP type, i.e., male connector, is mounted on a surface without a printed wiring so that the pin contact penetrates through the board and the opposite side as the connector for electrically connecting the one side board and the rear light as described above. It is necessary to use a type that is soldered to the printed wiring. However, there is no conventional DIP type connector that can cope with a high voltage with a small size like the above-described SMT type.

On the other hand, in order to further improve the high performance of the liquid crystal display device, for example, it is conceivable to arrange a plurality of straight-shaped rear lights and U-shaped rear lights directly under the liquid crystal screen. For that purpose, it is necessary to mount many male connectors in a narrow space | interval on an inverter board | substrate, and to be able to respond to high voltage and heat more compactly. However, the SMT type has limitations on miniaturization and high voltage, and there is nothing suitable for the conventional DIP type.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a high-voltage type DIP type male connector and a liquid crystal display device using the same, which are designed to be miniaturized while increasing the space distance and creepage distance to cope with high voltage. I am doing it.

In order to achieve the above object, in the male connector according to the first aspect of the present invention, two pin contacts housed in parallel in a box-shaped base housing whose front part is an opening extend from the rear side wall of the base housing to the opening part. And a contact pin portion which extends downward from the rear side wall and penetrates the printed wiring board from one side and is soldered to the other side, and the female connector is inserted and fitted into the opening. A lower partition wall is disposed below the base housing between the lead portions and protrudes downward to penetrate the printed wiring board.

According to this first configuration, the lower partition wall penetrating the printed wiring board from one side and penetrating the printed wiring board through the printed wiring board is provided as a lower portion of the base housing, so that the space distance and the creepage are DIP type. The distance can be secured and it is small and can cope with a high voltage. In addition, since the amount of solder in the DIP type is larger than that in the SMT type, the mechanical strength is high, and also it is strong in thermal fluctuations and is advantageous in that solder cracking is unlikely to occur.

In this 1st structure, it is preferable that the said lower partition wall protrudes below the lower end part of both said lead parts. Moreover, it is preferable that the lower end part of the said lower partition wall protrudes in the horizontal direction. In addition, it is preferable that both the lead portions are bent and protruded so as to be spaced apart from each other in the lateral direction, and the pitch of the solder portion is formed to be larger than the pitch of the contact pin portions.

A liquid crystal display device according to a second aspect of the present invention has one side having a liquid crystal screen, a rear light serving as a light source of the liquid crystal screen, and printed wiring of a power supply circuit for supplying power to the rear light and an inverter circuit on one side. A substrate is provided. Then, both the lead portions of the male connector of the first configuration penetrate the one side substrate and soldered to the output portion of the inverter circuit so that the male connector is mounted on the one side substrate and fitted to the both contact pin portions. Both socket contacts of the female connector are connected to the rear light via an electric wire.

According to this second configuration, since the inverter substrate and the power supply substrate are integrated into one sheet substrate by using the male connector of the first configuration, the size of the entire liquid crystal display device for the size of the liquid crystal display and the entire liquid crystal display device are reduced. Can further reduce the cost.

The liquid crystal display device which concerns on the 3rd structure of this invention is a power supply board which has the liquid crystal screen, the back light used as the light source of this liquid crystal screen, the printed wiring of the power supply circuit which supplies electric power to this back light on one side, and the said An inverter substrate having, on one side, printed wirings of an inverter circuit for supplying electric power to the rear light together with a power supply circuit. The female connector is mounted on the inverter board and fitted to the contact pin by the both lead portions of the male connector of the first configuration passing through the inverter board and soldered to the output of the inverter circuit. The socket contact of the connector is connected to the rear light via an electric wire.

According to this third configuration, by mounting a plurality of male connectors of the first configuration on the inverter substrate at narrow intervals, a plurality of rear lights can be disposed directly below the liquid crystal screen, thereby further improving the performance of the liquid crystal display device. Can be.

First, the male connector which is 1st Embodiment of this invention is demonstrated. As shown in the perspective view of FIG. 1, this male connector accommodates the pin contact 4 in the box-shaped (flat square cylindrical shape) insulating base housing 3 whose front part is the opening part 5, and the opening part 5 ), The female connector 2 shown in the perspective view of FIG. 2 is inserted and fitted. The pin contacts 4 are accommodated in the base housing 3 in two, left and right parallel, as shown in the planar cross-sectional view of FIG. 3, and extend from the rear side wall 6 of the base housing 3 to the opening 5. It has the contact pin part 15 which protrudes, and the lead parts 17 and 19. FIG. As shown in the rear sectional view of FIG. 11, the lead portions 17 and 19 extend downward from the rear side wall 6 so as to penetrate the printed wiring board 53 from one side (here, the upper surface) 53a. It is soldered to the side (here lower surface) 53b.

Here, the lower partition 50 is provided in the lower part of the base housing 3 between the soldering parts 19 and 19 of both lead parts, and protrudes downward and penetrates the printed wiring board 53, and the lower partition wall 50 protrudes below the lower end 19a of both lead portions 17 and 19. The arrangement position of the lower partition wall 50 is not limited to the exact center between the solder portions 19 and 19 of both lead portions, and solder (which is the same width as the printed land pattern) which solders both solder portions 19 and 19 ( If it is between 51 and 51), you may offset in the left-right direction. As shown in FIG. 12, the lower end part 50a of the lower partition 50 may protrude in the horizontal direction, and as shown in FIG. 13, only one side may extend in the horizontal direction. In addition, as shown in Fig. 14, the lower partition wall 50 is formed in a two-pronged shape so as to be bent inward in the transverse direction when penetrating the hole provided in the printed wiring board 53 (Fig. 10). You may provide a hook which protrudes outward. Further, as shown in FIG. 3, both lead portions 17 and 19 are bent and protruded so as to be laterally spaced apart from each other in the middle portion 17, and as shown in FIG. The pitch is formed larger than the pitch of both contact pin parts 15.

The male connector 1 and the female connector 2 inserted and fitted thereto will be described in more detail. As shown in FIG. 3, the base housing 3 of the male connector 1 is provided with a partition wall 7 protruding from the central portion of the rear side wall 6 toward the opening 5. 7) is disposed between the pin contacts 4 and 4 as described later, and protrudes longer than the tip portions 15a and 15a of the contact pin portions 15 and 15. In addition, both side surfaces of the partition wall 7 have a symmetrical shape with respect to the center line of the base housing 3 (see FIG. 10C), where the short base parallel planes 8, 8 extending parallel to the center line are present. ) And tapered surfaces 9 and 9 that form a sharp wedge shape continuously on the base parallel surfaces 8 and 8. However, the ratio between the base part parallel surfaces 8 and 8 and the tapered surfaces 9 and 9 in the front-rear direction is not particularly limited, and for example, only the nearest side of the tip portion 7a is the tapered surfaces 9 and 9. And all the remaining portions may be the base parallel surfaces 8 and 8, the whole may be tapered surfaces 9 and 9, and the base parallel parallel surfaces 8 and 8 may not be provided.

In addition, the locking grooves 11 and 11 which engage the locking projection members 28 and 28 (FIG. 8) of the female connector 2, which will be described later, on the inner surfaces of both side walls 10 and 10 adjacent to the rear side wall 6. ) Is provided, and guide grooves 12, 12 are provided on the inner surfaces of both side walls 10, 10 adjacent to the opening 5. On the other hand, the partition wall 13 which protrudes rearward is provided in the rear side wall 6. The partition 13 may have a hollow part (thickness removal part) 13a.

The pin contacts 4 and 4 are made by punching and bending a conductive metal plate of copper or a copper alloy (brass, etc.), and as shown in the perspective view of FIG. 16 is provided, and the intermediate part 17 in which the lead parts 17 and 19 which are continuously provided in the rear part of the attachment part 16 bends and extends transversely outward in the opposite direction, and the intermediate part It consists of the soldered part 19 extended by bending downward from the outer edge part of (17). And both pin contacts 4, 4 retain their attachments 16, 16 through the rear side wall 6, as shown in Figure 3 (or Figure 4, IV-IV cross-sectional view of Figure 1). The support pins 15 and 15 protrude toward the opening 5 parallel to the centerline of the housing 3 with the partition 7 therebetween, and the soldered portion 19 as shown in FIG. , 19) are housed in the base housing 3 so as to be separated laterally laterally from each other. In Fig. 6, the soldered portion 19 is bent forward from the outer end of the intermediate portion 17, and then bent downwardly. As shown in Fig. 7, the soldered portion 19 extends. You may bend downward and extend from an outer edge as it is.

As shown in FIG. 3, the contact pin portions 15 and 15 of the two pin contacts 4 and 4 housed and disposed in the base housing 3 have the tip portions 15a and 15a of the tip portion of the partition wall 7. 7a) retreats to the rear side wall 6 side, and as a result, even if the pitch between both contact pin parts 15 and 15 is made small, the clearance and creepage distance between both front-end parts 15a and 15a can be made long enough. Therefore, it is possible to effectively prevent the disturbance caused by the high voltage. As shown in Fig. 11, since the pitch between the solder portions 19 and 19 of the two pin contacts 4 and 4 is larger than the pitch between the two contact pin portions 15 and 15, the two contact pin portions 15, Even if the pitch between 15) is reduced, the space distance between the two soldered portions 1 on the upper surface 53a side of the printed wiring board 53 is secured to a length sufficient to prevent an obstacle caused by high voltage.

In addition, due to the presence of the partition 13 provided in the rear side wall 6, the creepage distance between the solder parts 19 and 19 on the upper surface 53a side of the printed wiring board 53 is also secured to a sufficient length. Therefore, even if the pitch between both contact pin parts 15 and 15 is narrowed, the base housing 3 can be made small, and even if the whole male connector 1 is made small, both pin contacts will be in the upper surface 53a side of the printed wiring board 53. The space distance and the creepage distance between (4, 4) can be made long enough, and it is the structure which can prevent the interference by a high voltage effectively.

On the other hand, on the lower surface 53b side of the printed wiring board 53, on both sides of the printed wiring board 53 including the two solder portions 19 and 19, the two solder portions 19 and 19 are shown. The space distance CL between the solders 51 and 51 (same width as the printed land pattern) which soldered the metal is a problem, but according to the male connector 1 of the first embodiment, the printed wiring board 53 is Since the lower partition 50 which penetrates from 53a and penetrates the printed wiring board 53 between both lead parts 17 and 19 soldered to the lower surface 53b is installed as a lower part of the base housing 3, it is a DIP type. At the same time, the clearance CL can be secured on the surface including the solder portions 19 and 19, so that it is compact and can cope with a high voltage.

In particular, in the male connector 1 of the first embodiment, since the lower partition wall 50 protrudes below the lower ends 19a and 19a of both lead portions, the space distance CL can be secured longer. As shown in FIG. 12, when the lower end 50a of the lower partition 50 extends in the lateral direction, a longer space distance CL can be secured. In the male connector 1 of the first embodiment, the pitches of the solder portions 19 and 19 of both lead portions are formed larger than the pitches of the contact pin portions 15 and 15, so that the pitches of the solders 51 and 51 are the same. (Pitch of the land pattern) is also large, thereby ensuring the space distance CL longer.

In addition, on the lower surface 53b side of the printed wiring board 53, the creepage distance CD between the two solders 51 and 51 becomes a problem on the lower surface 53b as shown in FIG. According to the male connector 1 of 1st Embodiment, since the lower partition 50 fully protrudes also in the front-back direction, the creepage distance CD is ensured in the lower surface 53b of the printed wiring board 53 although it is a DIP type. It is compact and can cope with high voltage. In addition, this male connector 1 is of the DIP type, and as shown in Fig. 11, since the solder 51 is raised and attached along the soldered portion 19, and the amount of solder is larger than that of the SMT type, thermal fluctuations are strong and solder cracking occurs. It is also advantageous in that it is difficult to do.

As shown in Fig. 1, reinforcing members 20 and 20 are embedded in the lower portion of the front end of both side walls 10 and 10 of the base housing 3, respectively. The reinforcing member 20 also extends downward and protrudes downward as shown in Fig. 5, which is a V-V sectional view, and is soldered to the lower surface 53b by penetrating the printed wiring board 53 of Fig. 11 from the upper surface 53a.

The female connector 2 of FIG. 2 inserted and fitted into the male connector 1 of the first embodiment is the socket housing 21 inserted and fitted into the opening 5 (FIG. 1) of the male connector 1. And two socket contacts 22, 22 connected to the ends of the two electric wires 45, 45 and individually housed in the socket housing 21, as shown in the planar cross-sectional view of FIG.

As shown in Fig. 2, the socket housing 21 is formed into a rectangular parallelepiped having a flat contour, and is provided with a notch 23 for engaging with the partition wall 7 (Fig. 3) of the male connector 1 in the first half. It is formed in a two branch form which consists of a pair of cylindrical member 24,24. Each cylindrical member 24 has a hollow portion 25 for separately receiving and holding the socket contact 22, as shown in FIG. 8, the empty portion 25 of the socket housing 21 The socket contact 22 extending to the rear end and connected to the electric wire 45 is inserted from the rear end opening 26 to be accommodated in the empty portion 25. Moreover, the insertion hole 27 of the contact pin part 15 (FIG. 3) of the pin contact 4 is provided in the front end part of each cylindrical member 24. As shown in FIG.

On the other hand, the locking projection member 28 which engages with the locking grooves 11 and 11 (FIG. 3) provided inside the base housing 3 of the male connector 1 on the outer surface of the front end of both cylindrical members 24 and 24. As shown in FIG. , 28) is installed. Also, as shown in FIG. 2, guides coupled to guide grooves 12 and 12 (FIG. 1) provided in the inner side of the base housing 3 of the male connector 1 are provided at both sides of the rear portion of the socket housing 21. The protrusions 29 and 29 protrude. Opposite side surfaces of the cutouts 23 are formed to correspond to both side surfaces of the partition wall 7.

The socket contact 22 of FIG. 8 has a socket portion 32 fitted to the contact pin portion 15 (FIG. 3) at the front portion, has a crimp portion 33 of the electric wire at the rear portion, and falls into an intermediate portion. The prevention lance 34 is provided. FIG. 9 is a side cross-sectional view of the female connector 2 inserted and fitted into the male connector 1 of the first embodiment, and a planar cross-sectional view is shown in FIG.

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, the liquid crystal display device has a liquid crystal screen 41 assembled to a main body frame 40 such as a notebook personal computer, and a back light as a light source of the liquid crystal screen 41 (here And one side substrate 53 having printed wirings of a power supply circuit for supplying electric power to the rear light 42 and an inverter circuit on one side (here, lower surface), and the reflector plate 44 thereof. have. Then, the soldered portions 19 (FIG. 11) of both lead portions of the male connector 1 of the first embodiment pass through the one side substrate 53 from the upper surface 53a and output the inverter circuit on the lower surface 53b. The male connector 1 is mounted on one side board 53 by being soldered to the part, and both socket contacts 22 of the female connector 2 fitted to the both contact pin portions 15 (Fig. 3) (Fig. 8 is connected to the rear light 42 via the electric wire 45. In addition, the reinforcing member 20 (FIG. 1) of the male connector 1 also penetrates the one side substrate 53 from the upper surface 53a and is soldered to the lower surface 53b. The one side substrate 53 may be attached to the main body frame 40 so that the printed wirings are on the upper surface, that is, the base housing 3 (FIG. 1) of the male connector 1 is on the lower surface 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 and 31 (FIG. 8) of the cutout 23 are partitioned ( 7 is engaged with the tapered surfaces 9 and 9 (FIG. 3), and the guide protrusions 29 and 29 (FIG. 2) on both sides are engaged with the guide grooves 12 and 12 (FIG. 1) for precise fit. And the contact pin portions 15, 15 (FIG. 3) of the two pin contacts 4, 4 of the male connector 1 are guided through the insertion holes 27, 27 (FIG. 8), respectively. 24, and as shown in FIG. 10, it fits into the socket part 32, 32 of the socket contact 22, and is electrically connected. When the fitting of the male connector 1 and the female connector 2 is completed, both locking projection members 28 and 28 of the female connector 2 are inserted into the locking grooves 11 and 11 of the male connector 1. The coupling state can be confirmed by the click feeling at the time of the engagement.

In the liquid crystal display device of the second embodiment, the pin contacts 4 and 4 of the male connector 1 and the socket contacts 22 and 22 of the female connector 2 are sufficiently long, respectively, as described above. Since the clearance has a creepage distance and a creepage distance, even when high voltage power is supplied to the rear light 42 through the power supply circuit and the inverter circuit of one side substrate 53 of FIG. . In addition, since the inverter board and the power supply board are integrated into one substrate 53 by using the male connector 1 of the first embodiment, the size of the entire liquid crystal display device with respect to the size of the liquid crystal display 41 and The cost reduction of the whole liquid crystal display device can be further improved.

Next, a liquid crystal display device according to a third embodiment of the present invention will be described. This liquid crystal display device has a different configuration in order to arrange a plurality of rear lights 42 directly below the liquid crystal screen 41 as compared to the liquid crystal display device of the second embodiment of FIG. To show. The liquid crystal display device includes a liquid crystal display 41 (FIG. 16), a plurality of linear backlights 42 (here, six) that serve as light sources of the liquid crystal screen, a reflecting plate 64 thereof, and a rear light 42 thereof. One side of the power supply board (not shown) which has the printed wiring of the power supply circuit which supplies electric power to one side, and the printed wiring of the inverter circuit which supplies electric power to the back light 42 with the said power supply circuit (in this case, An inverter substrate 63 disposed on the lower surface thereof.

Then, for each of the rear lights 42, the soldered portions 19 (Fig. 11) of both lead portions of the male connector 1 of the first embodiment pass through the inverter substrate 63 from the upper surface 63a. The male connector 2 is mounted on the inverter board 63 by soldering to the output portion of the inverter circuit of 63b, and the female connector 2 fitted to one of the contact pin portions 15 (Fig. 3). One socket contact 22 (FIG. 8) is connected to the right terminal of the rear light 42 via the electric wire 45. As shown in FIG. The left terminal of each rear light 42 is connected to another substrate (not shown) via the electric wire 45 or the like, but this does not have to correspond to the high voltage. Further, the reinforcing member 20 (Fig. 1) of the male connector 1 also penetrates through the inverter substrate 63 from the upper surface 63a and is soldered to the lower surface 63b. The inverter substrate 63 may be attached to the main body frame 40 (Fig. 16) so that the printed wirings are on the upper surface, that is, the base housing 3 (Fig. 1) of the male connector 1 is on the lower surface 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 and 31 (FIG. 8) of the cutout 23 are partitioned ( 7 is engaged with the tapered surfaces 9 and 9 (FIG. 3), and the guide protrusions 29 and 29 (FIG. 2) on both sides are engaged with the guide grooves 12 and 12 (FIG. 1) for precise fit. And the contact pin portions 15, 15 (FIG. 3) of the two pin contacts 4, 4 of the male connector 1 are guided through the insertion holes 27, 27 (FIG. 8), respectively. 24, the contact pin 15 is fitted and electrically connected to the socket 32 of the socket contact 22, as shown in FIG. When the fitting of the male connector 1 and the female connector 2 is completed, both locking projection members 28 and 28 of the female connector 2 are inserted into the locking grooves 11 and 11 of the male connector 1. The coupling state can be confirmed by the click feeling at the time of the engagement.

In the liquid crystal display device of the third embodiment, the pin contacts 4 and 4 of the male connector 1 and the socket contacts 22 of the female connector 2 each have a sufficiently long space. Since the distance and the creepage distance are provided, there is no risk of causing a short circuit accident or the like even when high voltage power is supplied to the rear light 42 through the inverter circuit of the inverter substrate 63 of FIG. In addition, the plurality of male connectors 1 of the first embodiment are mounted on the inverter substrate 63 at a narrow interval so that the plurality of rear lights 42 can be disposed directly below the liquid crystal screen 41 (Fig. 16). As a result, the performance of the liquid crystal display device can be further improved.

Next, a liquid crystal display device according to a fourth embodiment of the present invention will be described. This liquid crystal display device also has a plurality of rear lights 72 disposed directly below the liquid crystal screen 41 as compared to the liquid crystal display device of the second embodiment of FIG. Illustrated. The liquid crystal display device includes a liquid crystal display 41 (FIG. 16), a plurality of U-shaped back lights 72 and three reflecting plates 64 that serve as light sources of the liquid crystal screen, and a rear light 72 thereof. One side of the power supply board (not shown) which has the printed wiring of the power supply circuit which supplies electric power to one side, and the printed wiring of the inverter circuit which supplies electric power to the back light 72 with the said power supply circuit (in this case, An inverter substrate 73 provided on the lower surface thereof.

Then, the solder portions 19 (Fig. 11) of both lead portions of the male connector 1 of the first embodiment pass through the inverter substrate 73 from the upper surface 73a with respect to each rear light 72 ( By soldering the output portion of the inverter circuit of 73b), the male connector 1 is mounted on the inverter board 73, and both sockets of the female connector 2 fitted to the both contact pin portions 15 (FIG. 3). The contact 22 (FIG. 8) is connected to the rear light 72 via the electric wire 45. As shown in FIG. The reinforcing member 20 (FIG. 1) of the male connector 1 also penetrates through the inverter substrate 73 from the upper surface 73a and is soldered to the lower surface 73b. The inverter board 73 may be attached to the main body frame 40 (Fig. 16) so that the printed wirings are on the upper surface, that is, the base housing 3 (Fig. 1) of the male connector 1 is on the lower surface 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 and 31 (FIG. 8) of the cutout 23 are partitioned ( 7 is engaged with the tapered surfaces 9 and 9 (FIG. 3), and the guide protrusions 29 and 29 (FIG. 2) on both sides are engaged with the guide grooves 12 and 12 (FIG. 1) for precise fit. And the contact pin portions 15, 15 (FIG. 3) of the two pin contacts 4, 4 of the male connector 1 are guided through the insertion holes 27, 27 (FIG. 8), respectively. 24, and fit to the socket portions 32, 32 of the socket contact 22, as shown in FIG. When the fitting of the male connector 1 and the female connector 2 is completed, both locking projection members 28 and 28 of the female connector 2 are inserted into the locking grooves 11 and 11 of the male connector 1. The coupling state can be confirmed by the click feeling at the time of the engagement.

In the liquid crystal display device of the fourth embodiment, the pin contacts 4 and 4 of the male connector 1 and the socket contacts 22 and 22 of the female connector 2 are sufficiently connected as described above. Since it has long clearance distance and creepage distance, even if high voltage electric power is supplied to the back light 72 through the inverter circuit of the inverter board 73 of FIG. In addition, a plurality of male connectors 1 of the first embodiment are mounted on the inverter substrate 73 at a narrow interval so that a plurality of rear lights 72 can be disposed directly below the liquid crystal screen 41 (FIG. 16). Therefore, the high performance of a liquid crystal display device can be improved further.

According to the present invention, since the lower partition wall penetrating the printed wiring board from one side and penetrating through the printed wiring board is installed as a lower portion of the base housing between the two lead portions soldered to the other surface, the space distance and the creepage distance are DIP type. As it can be secured, it is compact and provides the effect of coping with high voltage. In addition, since the amount of solder in the DIP type is higher than that in the SMT type, the mechanical strength is high, and also it is resistant to thermal fluctuations, and also provides an advantageous effect in that solder cracking is unlikely to occur.

Claims (6)

Two pin contacts housed in parallel to the left and right in the box-shaped base housing whose front part is an opening are formed into contact pin portions extending from the rear side wall of the base housing to the opening portion, and protruding downward from the rear side wall to form a printed wiring board. A male connector having a lead portion penetrating from one side and soldered to the other side, wherein a female connector is inserted and fitted into the opening; A male connector disposed below the base housing between the two lead portions and provided with a lower partition wall projecting downward and penetrating the printed wiring board. The male connector according to claim 1, wherein the lower partition wall protrudes downward from lower ends of the lead portions. The male connector according to claim 1, wherein a lower end portion of the lower partition wall protrudes laterally. The male connector according to claim 1, wherein the two lead portions are bent and protruded so as to be spaced apart from each other in the lateral direction, and the pitch of the solder portions is formed larger than the pitch of the contact pin portions. LCD screen, The back light which becomes the light source of the LCD screen, It is a liquid crystal display device provided with the one side board | substrate which has the printed wiring of the power supply circuit and inverter circuit which supply electric power to the said back light on one side, The male connector is mounted on the one side board by soldering both the lead portions of the male connector according to claim 1 through the one side board and soldered to the output of the inverter circuit. And both socket contacts of the female connector fitted to the both contact pin portions are connected to the rear light via an electric wire. LCD screen, The back light which becomes the light source of the LCD screen, A power supply board having, on one side, printed wiring of a power supply circuit for supplying power to the rear light; It is a liquid crystal display device provided with the inverter board which has the printed wiring of the inverter circuit which supplies electric power to the said back light on one side with the said power supply circuit, The male connector is mounted on the inverter board by soldering both of the lead portions of the male connector according to claim 1 to the output of the inverter circuit through the inverter board. And a socket contact of the female connector fitted to the contact pin portion is connected to the rear light via an electric wire.

Images