KR100975910B1 - Power connection apparatus of direct type backlight unit - Google Patents

Abstract

The present invention is an integrated power supply connection device for applying power to a cold cathode fluorescent lamp (CCFL) by tightening the lamp lead receiving port of the pressurized cam spring plate by the elastic force of the cam spring in the backlight device to be in close contact with the lead of the lamp It is about. The apparatus of the present invention is a power supply of a backlight device for connecting a power source from an inverter to a lamp having a protruding lead from a cylindrical tube, the base being attached to a substrate of the backlight device and a pair of plates attached to the base. The lamp lead receiving port which springs are bent to form a space for accommodating the lead of the lamp, a lamp lead guide attached to the base to stably receive the lead of the lamp, and a lamp lead guide attached to the base to stably support the lamp tube It comprises a lamp tube guide, a cam spring having an elastic structure to provide a restoring force, and a pressurizing cam for pressurizing the lamp lead receiving opening by the restoring force of the cam spring. According to the present invention, a separate conductive cable and a socket composed of a terminal and a housing are not required to supply power to a cold cathode fluorescent lamp (CCFL), thereby reducing the material cost of the power supply device, and simplifying the manufacturing process to simplify automation. This makes it possible to reduce the processing cost.

Backlight, power connector, pressurized cam, cam spring, leaf spring, lamp

Description

POWER CONNECTION APPARATUS OF DIRECT TYPE BACKLIGHT UNIT}

The present invention relates to a power connection device for supplying power to a cold cathode fluorescent lamp (CCFL) in the backlight device, and more specifically, by tightening the lamp lead receiving port of the pressurized cam spring plate by the elastic restoring force of the cam spring The present invention relates to a power supply connecting device having an integrated structure in close contact with a lead of a lamp.

In general, the backlight includes cylindrical fluorescent lamps such as Cold Cathode Fluorescent Lamps (CCFL), Hot Cathode Fluorescent Lamps (HCFL), and External Electrode Fluorescent Lamps (EEFL). Various light sources, such as a light emitting diode (EL) element and an electroluminescence (EL) element, can be used. Since the light sources have advantages and disadvantages, either one can be selected and used according to the type of backlight, but a cold cathode fluorescent lamp (CCFL) is mainly used in a direct type backlight used in a large display device requiring high brightness.

The general structure of the cold cathode fluorescent lamp (hereinafter referred to as 'CCFL') is filled with an inert gas such as mercury (Hg), argon gas (Ar) and neon gas (Ne) inside a glass tube. Phosphors are attached to the inner wall of the glass tube, and internal electrodes of the anode and the cathode are provided on both sides of the glass tube, and conductive connecting leads are connected to the internal electrodes to apply an electric field to the internal electrodes from the outside so that both sides of the tube are external. It has a protruding structure.

The conventional power connection method for applying power to such a cold cathode fluorescent lamp is to solder the lamp lead and wire directly or to place the cold cathode fluorescent lamp on the socket housing, and to close the lamp lead to the receptacle. Structure.

In the direct type backlight device, the conventional power supply connection device has a structure in which the socket housing and the socket retainer are separated, so that the assembly process is complicated, the socket retainer is easily detached, and the contact is unstable.

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a power connection device for a direct type backlight device that is easy to mount the lamp and good contact with the lead of the lamp.

In order to achieve the above object, the present invention provides a power supply connecting device for a backlight device for connecting a power source from an inverter to a lamp having a protruding lead, comprising: a base attached to a substrate of the backlight device; A lamp lead receiver configured to be bent a pair of leaf springs attached to the base to form a space for accommodating a lead of the lamp; A lamp lead guide attached to the base to stably receive a lead of the lamp; A lamp tube guide attached to the base to stably support the tube of the lamp; A cam spring having an elastic structure to provide a restoring force; And a pressurizing cam for pressurizing the lamp lead receiving opening by a restoring force of the cam spring.

The lamp lead receiving port of the embodiment has a pair of leaf springs, the middle portion of which is bent so that the end portion is in contact with each other, the outer leaf spring portion forms a pressing plate spring, the inner leaf spring forms a contact plate spring, Recessed grooves are formed at each end of the contact plate spring to form contact with the lead of the lamp. When an external pressure is applied to the pressure cam to mount the lamp, the leaf spring of the lamp lead receiving port is restored. If is is that the pressure the leaf spring inclined at θ ₁ angle to the outside, the contact plate spring is inclined at θ ₂ angle may be that the lead contact portion be opened, the external force of the pressing cam be removed after the mounting of the lamp, wherein The pressurizing cam is restored by the restoring force of the cam spring and continuously pressurizes the pressurizing plate spring to pressurize the pressurizing plate. Spring _"narrows at an angle, the contact leaf spring is θ _2, θ ₁ is such that the lead of the lead contact portion and said lamp contact narrower angle. In addition to _"the amount of change in the angle of the contact plate springs (θ ₂ -θ ₂ the pressure plate angle change amount of the spring (θ ₁ -θ _{1) 'is} equal to or greater than).

In another embodiment, the lamp lead receiving port may be configured such that the leaf spring of the lamp lead receiving port is restored in a state where there is no external pressure in the pressure cam so that the pressing plate spring and the contact plate spring are inclined outward at a predetermined angle to open the lead contact portion. When the pressurizing cam is pressed by applying external pressure, the pressurizing plate spring is compressed inward, and when the pressurizing cam is lowered below the hook to remove the external pressure, the pressurizing plate spring is restored to the outside and the pressurizing cam is hooked to the hook. When the pressure cam and the hook is engaged, the pressure cam continuously pressurizes the pressure plate spring by the restoring force of the cam spring, thereby narrowing the pressure plate spring and the contact plate spring. The lead contact portion and the lead of the lamp are in close contact with each other. Will.

In another embodiment, the lamp lead receiver has a pair of leaf springs, each bent outward at a predetermined interval for receiving the lid of the lamp from the center, so that the outer leaf spring portion forms a pressing plate spring, and the inner leaf spring is the contact plate. A spring is formed, and the pressure plate spring has a hook for fastening with the pressure cam, and the contact plate spring has a protrusion for fastening a lead of the lamp. The lamp lead receptacle is capable of inserting a lead of the lamp in the interval between the contact plate springs in a state where there is no external pressure in the pressure cam, and presses the pressure plate spring by applying an external pressure to the pressure plate spring inwardly. When the pressure cam is lowered below the hook to remove the external pressure, the pressure plate spring is restored to the outside again and the pressure cams are caught by the hooks and fastened to each other, and the cams are engaged with the pressure cams. By the restoring force of the spring, the pressure cam elastically deforms the pressure plate spring so that the distance between the contact plate springs is narrowed so as to be in close contact with the lead of the lamp.

The cam spring is a leaf spring bent upwardly from one end of the base, or a leaf spring bent upwards from one end of the base or a kind of leaf spring connected to the plate forming the lamp tube guide, When the pressure cam is released before the lamp is mounted and the pressure cam is engaged with the lamp lead receiver after the lamp is mounted, the pressure cam applies a restoring force to the pressure cam so as to apply pressure to the lamp lead receiver.

The pressurizing cam has a space for fastening the lamp lead receiving port, and compresses the cam spring while being compressed downward when pressed by an external force, and when the external force is removed, the cam spring restrains the restoring force of the cam spring. By pressing the lamp lead receiving port.

According to the present invention, a separate conductive cable and a socket composed of a terminal and a housing are not required to apply power to an internal electrode of a cold cathode fluorescent lamp (CCFL), thereby reducing the material cost of the power supply device and simplifying the manufacturing process. It is possible to automate to achieve the cost reduction effect by reducing the processing cost.

In addition, the power connection device of the present invention can be integrally formed and mechanically adhered by the restoring force of the cam spring without welding, thereby improving the electrical contact performance between the lead of the lamp and the power supply connection device. There is an effect that the breakage of the welded portion due to flow or the reliability deterioration problem caused by the plastic housing does not occur.

The technical problems achieved by the present invention and the practice of the present invention will be more clearly understood by the preferred embodiments of the present invention described below. The following examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention.

In general, a direct type backlight has a plurality of power connection devices arranged on both sides of the plane, and the CCFL lamps are mounted on each pair of power connection devices to operate by receiving power from an inverter. Since each power connection device is the same, embodiments of the present invention will be described using one power connection device as an example.

[First Example ]

1 is a perspective view showing a power connection device according to a first embodiment of the present invention, Figure 2 is a plan view showing a power connection device according to a first embodiment of the present invention, Figure 3 is a first view of the present invention Side view showing a power connection device according to an embodiment.

1 to 3, the power connection device 100 according to the first embodiment of the present invention, the base 110, the lamp lead receiving port 120, the lamp lead guide 130, the lamp tube guide A structure consisting of a 140, a cam spring 150, and a pressurizing cam 160 connects the lamp 10 of the direct backlight device with the inverter.

In Figures 1 to 3, the base 110 is a plate supporting the entire configuration, and welding parts 112 on both sides are fastened by welding or screws to the substrate of the backlight device, thereby providing a power connection device according to the first embodiment of the present invention. The 100 is fixed to the substrate of the backlight device.

The lamp lead receiver 120 is bent by bending a pair of leaf springs 122 and 124 extending from the base 110 so that the end portions 122c and 124c are in contact with each other in an inwardly curved shape in the form of "∩". Based on the part, it is divided into an inner part and an outer part. Outer portions of the bent leaf springs 122 and 124 are called press leaf springs 122a and 124a, and inner portions of the bent leaf springs 122 and 124 are called contact leaf springs 122b and 124b. The pressure plate springs 122a and 124a are elastically deformed under pressure by the pressure cams 160 in order to keep the contact plate springs 122b and 124b in close contact with each other, and each end of the contact plate springs 122b and 124b. Grooves are formed in the recesses 122c and 124c so as to contact the leads 13 of the lamps.

The lamp lead guide 130 is a vertical partition wall attached to the base 110 and has a groove 132 formed therein for passing only the lead 13 of the lamp at the center thereof to distinguish the lead area of the lamp from the tube area of the lamp. do.

The lamp tube guide 140 is a horizontal plate protruding in the direction of the lamp from the groove 132 through which the lead 13 of the lamp passes. The lamp tube guide 140 is capable of placing the tube 11 of the lamp on both sides of the lamp 142. Is formed to suppress the flow of the lamp 10.

The cam spring 150 is a double banded leaf spring that is connected to the base 110 so that the pressure cam 160 normally pressurizes the leaf springs 122 and 124 of the lamp lead receiver 120. 160 to provide a restoring force.

The pressurizing cam 160 extends inclined from the cam spring 150 and surrounds the lamp lead receiving port 120 so as to compress the lamp lead receiving port 120 by the elastic force of the cam spring 150.

In order to mount the lamp 10 to the power connection device of the first embodiment configured as described above, when the pressure cam 160 is pressed by applying external pressure, the leaf springs 122 and 124 of the lamp lead receiving port 120 are released and the lamp lead contact portion ( When the lamp 10 is seated on the lamp lead guide 120 and the lamp tube guide 140 in the open state 126, the external pressure is removed. The mounting of the lid 13 of the lamp inserted into the lead contact portion 126 by applying pressure to the leaf springs 122 and 124 of the tool 120 is in close contact with the lamp lead contact portion 126.

The operation of the pressurizing cam 160 and the lamp lead receiving port 120 when the lamp 10 is mounted in the power connection device of the first embodiment is shown in FIG. 5. In FIG. 5, the cam spring 150 is pressed by the external pressure to release the lamp lead receiving opening 120, and the dashed line is removed from the external pressure to remove the lamp lead receiving opening 120 from the cam spring 150. Is in close contact.

Referring to FIG. 5, when an external force is applied to the pressure cam 160, the lamp lead receiving hole 120 releases the plate springs 122 and 124 so that the pressure plate springs 122a and 124a open outward at an angle of ₁ . The contact plate springs 122b and 124b are opened at an angle of θ ₂ so that the lead contact portion 126 is greatly opened. In this state, the lamp 10 is placed on the lamp lead guide 130 and the lamp tube guide 140 so that the lead 13 of the lamp is inserted into the lead contact 126.

Subsequently, when the external force is removed from the pressure cam 160, the pressure cam 160 applies pressure to the pressure plate springs 122a and 124a by the restoring force of the cam spring 150, so that the pressure plate springs 122a and 124a are θ _{1. It} is narrowed at an angle, and the contact plate springs 122b and 124b are narrowed at an angle of θ _{2 '} so that the lead contact portion 126 is narrowed to be in close contact with the lead 13 of the lamp.

And pressing cam angle (θ ₂₎ of the angle (θ ₁₎ and the contact plate springs (122b, 124b) of the pressure plate spring of the applied external force to the pressure cam 160 is released state (122a, 124a) (160) Compared with the angle θ _{1 '} of the pressure plate springs 122a and 124a when the external force is removed, and the angle θ _2' of the contact plate springs 122b and 124b, as shown in FIG. The angle change amount θ ₁ -θ _{1 ′ of the} pressure plate springs 122a and 124a is equal to or larger than the angle change amount θ ₂ -θ _{2 ′ of the} contact plate springs 122b and 124b. _Thus, the amount of change in the contact plate springs _{(122b, 124b) (θ 2} -θ 2 variation (θ ₁ -θ _{1) 'of} the pressure cam 160, the external force applied and the pressure plate springs by removing (122a, 124a) of ), The contact plate springs 122b and 124b and the lid 13 of the lamp are in close contact with each other in proportion to the difference in the amount of change.

On the other hand, if the external force is applied to the pressure cam 160 and then removed, in order to restore the pressure cam 160, the elastic force of the cam spring 150 should exceed the restoring force of the pressure plate spring (122a, 124a). To this end, in the first embodiment of the present invention, the cam spring 150 is bent in two stages so that the elastic force is large, and the cam spring 150 is in contact with the pressing plate springs 122a and 124a in contact with the pressing plate springs 122a and 124a. The pressure is applied to the pressure plate springs 122a and 124a by the elastic force of 150.

6 is a diagram illustrating a case in which a tab is added in the configuration of FIG. 1 as a modification of the first embodiment, and FIG. 7 is a diagram illustrating a connection state in which a tab is connected to an inverter in a variation of the first embodiment. .

When the power supply device 100 according to the first embodiment without the above-described tab is installed in the direct type backlight device, the welding unit 112 of the base is directly welded to the substrate 20 of the backlight, and then the inverter power source is applied to the substrate 20. Connect the power to the power connection device 100 collectively.

However, in the modified example of the first embodiment, as shown in FIG. 6, the tab 170 is disposed on one surface of the base 110, and as shown in FIG. 7, the receptacle ties in one direction of the power connection cable 34. 32, and connected to the inverter in the other direction, it is possible to supply power individually to each lamp (10).

[Second Example ]

8 is a perspective view illustrating a power connection device of the backlight device according to the second embodiment of the present invention, Figure 9 is a side view showing a power connection device of the backlight device according to a second embodiment of the present invention, Figure 10 Is a view for explaining a lamp lead receiving device according to a second embodiment of the present invention.

As shown in FIGS. 8 to 10, the power connection device 200 according to the second embodiment of the present invention includes a base 210, a lamp lead receiving hole 220, a lamp lead guide 230, and a lamp tube guide. 240, the cam spring 250, and the pressure cam 260.

8 to 10, the base 210 is a plate supporting the entire configuration, and welding parts 212 on both sides of the base 210 are fastened to the substrate of the backlight device by welding or screws to backlight the power supply device 200 according to the present invention. Secure to the substrate of the device.

The lamp lead receiving opening 220 has a pair of leaf springs (222, 224) is bent in the middle direction "∧" in the inner direction so that the end portions (222c, 224c) abut each other, the outer leaf spring portion is a pressing plate spring ( 222a and 224a, inner leaf springs form contact leaf springs 222b and 224b, and grooves are formed in each end portions 222c and 224c of the contact leaf springs 222b and 224b to form a lead of the lamp. The lead contact portion 226 is formed to be in contact with 13). At this time, the hook plate (222d, 224d) for engaging with the pressure cam 260 protrudes in the pressure plate spring (222a, 224a) of the second embodiment, when pressing the pressure cam 260 by applying a force from the outside When the springs 222a and 224a are compressed inward and the pressure cam 260 is lowered below the hooks 222d and 224d, the pressure plate springs 222a and 224a are restored to the outside and the pressure cams 260 are hooks 222d. 224d) to be fastened to each other.

The lamp lead guide 230 is attached to the base 210 to stably receive the lid 13 of the lamp, and the lamp tube guide 240 is attached to the base 210 to stabilize the tube 11 of the lamp. To support. Since the lamp lead guide 230 and the lamp tube guide 240 of the second embodiment have an integrated structure, the shape of the lamp lead guide 230 and the lamp tube guide 240 are different from those of the first embodiment. Let's do it.

The cam spring 250 is connected to the base 210 and is released before the lamp is mounted. When the pressure cam 260 is engaged with the lamp lead receiving port 220 after the lamp is mounted, the pressure cam 260 is connected to the lamp lead. The restoring force is provided to the pressure cam 260 to apply pressure to the leaf springs 222 and 224 of the receiver 220.

In the absence of external pressure, the pressurizing cam 260 releases the leaf springs 222 and 224 of the lamp lead receiving port 220 so that the lamp 10 can be mounted on the lamp lead guide 230 and the lamp tube guide 240. After the lamp is mounted, the lead contact portion 226 is applied to the leaf springs 222 and 224 of the lamp lead receiver 220 by the restoring force of the cam spring 250 while being engaged with the lamp lead receiver 220 by external pressure. The lid 13 of the lamp inserted into the lead contact portion 226 is in close contact.

In this second embodiment, the procedure for mounting the lamp is because the pressing plate springs 222a and 224a are released and the lid contact 226 is in an open state under no external force applied to the pressing cam 260. The lamp 10 is placed on the lamp lead guide 230 and the lamptude guide 240 so that the lead 13 of the lead 13 is inserted into the lead contact portion 226.

Thereafter, by applying an external force to the pressurizing cam 260, the pressurizing cam 260 is fastened to the hooks 222d and 224d of the pressing plate springs 222a and 224a by the restoring force of the cam spring 250. By continuously applying force to the pressure plate springs (222a, 224a) the lead 13 of the lamp is in close contact with the contact portion 226 to apply power to the internal electrode of the lamp.

Comparing the second embodiment to the first embodiment, the basic concept of pressing the pressurizing cam spring against the pressing plate spring by the restoring force of the cam spring to bring the lead 13 and the lead contact portion of the lamp into close contact is the same. In the case of the example, the pressurizing plate springs 222a and 224a are released in a state where no external force is applied to the pressurizing cam 260 so that the lamp 10 can be mounted. 260 is fastened to the hooks 222d and 224d of the pressure plate spring, so that the pressure cam 260 continuously presses the pressure plate springs 222a and 224a by the restoring force of the cam spring 250, thereby leading to the lead 13 of the lamp. ) And the lead contact portion 226 are in close contact with each other.

That is, in the case of the first embodiment, when the lamp is mounted, an external force is applied to the pressure cam 160 to release the lamp lead receiving opening 120 to mount the lamp. However, in the second embodiment, no force is applied thereto. Since the lamp lead receiving opening 220 is released in a non-state state, the lamp lead receiving opening 220 is mounted, and an external force is applied to the pressure cam 260 after the lamp is mounted.

Since the lamp lead receiving opening 220 is released in the state of the second embodiment without the external pressure, there is an advantage in that lamp mounting is easier than in the first embodiment. That is, in the case of the first embodiment, since the lamp 10 must be mounted while the pressing cam 160 is pressed, the lamp mounting process is more complicated and inconvenient than the second embodiment because the external force is applied and the lamp is mounted at the same time. Do.

FIG. 12 is a diagram illustrating a case in which a tab is added to the configuration of FIG. 8 as a modification of the second embodiment, and FIG. 13 is a diagram illustrating a connection state through the tab in the modification of the second embodiment.

In case of installing the power connection device 200 of the second embodiment without the above-described tab in the direct type backlight device, the welding unit 212 of the base is directly welded to the backlight substrate 20, and then the power supply of the inverter is supplied to the substrate 20. Connect and apply power to each power connection device 200 collectively.

However, in the modified example of the second embodiment, as shown in FIG. 12, the tab 270 is disposed on one surface of the base 210, and as shown in FIG. 13, the receptacle Bound to one direction of the power connection cable 34, FIG. 32, and connected to the inverter in the other direction, it is possible to supply power individually to each lamp (10).

[Third Example ]

14 is a perspective view showing a power connection device according to a third embodiment of the present invention, Figure 15 is a rear view showing a power connection device according to a third embodiment of the present invention, Figure 16 is a third view of the present invention 3 is a perspective view of a lamp mounted on the power connection device according to the third embodiment.

As shown in FIGS. 14 to 16, the power connection device 300 according to the third embodiment of the present invention may include a base 310, a lamp lead receiving hole 320, a lamp lead guide 330, and a lamp tube guide. 340, the cam spring 350, the pressing cam 360 as a structure that connects the lamp 10 of the direct backlight device with the inverter.

14 to 16, the base 310 is a plate supporting the entire configuration, and welding parts 312 on both sides are fastened to the substrate of the backlight device by welding or screws, thereby backlighting the power connection device 300 according to the present invention. Secure to the substrate of the device.

The lamp lead receiver 320 has a pair of leaf springs 322 and 324 extending from the base and are bent outwardly at a predetermined interval for accommodating the lid of the lamp at the center, respectively, so that the outer leaf spring portion is pressed. The leaf springs 322a and 324a are formed, and the inner leaf springs form the contact leaf springs 322b and 324b. The pressing plate springs 322a and 324a are formed with hooks 322d and 324d for fastening with the pressing cam 360, and the contact plate springs 322b and 324b are protrusions for fastening the lid 13 of the lamp. 322e and 324e are formed. Particularly, the leaf springs 322 and 324 of the third embodiment have bent portions divided into two parts, and hooks 322 d and 324 d are formed on the outer leaf spring portions at the lamp mounting position, and the protrusions 322 e and 324 e are alternately formed. have. The pressing plate springs 322a and 324a are normally released and, when engaged with the pressing cam 360, are elastically deformed by the restoring force of the cam spring 350 to space the gap 326 between the contact plate springs 322b and 324b. N is narrowed so as to be in close contact with the lid 13 of the lamp inserted between the contact plate springs (322b, 324b).

The lamp lead guide 330 is a vertical partition wall attached to the base 310 and has a groove 332 formed therein for passing only the lead 13 of the lamp in the center thereof to distinguish the lead area of the lamp from the tube area of the lamp. do.

The lamp tube guide 340 is formed to form a semi-circular groove in the plate perpendicular to the base 310 so that the tube 11 of the lamp can be placed thereon, and the cam spring 350 is integrally formed on the upper side of the plate. It is.

The cam spring 350 is a kind of leaf spring connected to the plate forming the lamp tube guide 340. The cam spring 350 is released before the lamp is mounted, and the press cam 360 receives the lamp lead receiver 320 after the lamp is mounted. ) And the pressurizing cam 360 provides a restoring force to the pressurizing cam 360 to apply pressure to the leaf springs 322 and 324 of the lamp lead receiving opening 320.

The pressurizing cam 360 extends inclined from the cam spring 350 and surrounds the lamp lead receiving port 320 to compress the lamp lead receiving port 320 by the restoring force of the cam spring 350. That is, when there is no external pressure, the pressurizing cam 360 releases the leaf springs 322 and 324 of the lamp lead receiving opening 320 to mount the lamp 10 to the lamp lead guide 330 and the lamp tube guide 340. After the lamp is mounted, it is engaged with the lamp lead receiver 320 by an external pressure and pressurizes the plate springs 322, 324 of the lamp lead receiver 320 by the restoring force of the cam spring 350. It is in close contact with the lid 13 of the lamp inserted between the 322b, 324b.

The procedure for mounting the lamp 10 in the power connection device of the third embodiment configured as described above is that the pressing plate springs 322a and 324a are released in a normal state in which no external force is applied to the pressing cam 360, and thus the contact plate spring. The gap 326 between the 322b and 324b is in the open state so that the lamp 10 is inserted into the lamp lead guide so that the lead 13 of the lamp is inserted into the gap 326 between the contact leaf springs 322b and 324b. 330) and the lamp tube guide 340. At this time, the lead 13 of the lamp is seated in the mounting space via the protrusions 322e and 324e formed in the contact plate springs 322b and 324b, and once it is seated, the separation is prevented by the protrusions 322e and 324e.

Thereafter, by applying an external force to the pressure cam 360, the pressure cam 360 is fastened to the hooks 322d and 324d of the pressure plate springs 322a and 324a by the restoring force of the cam spring 350. Continuous force is applied to the pressure plate springs 322a and 324a so that the gap between the contact plate springs 322b and 324b is narrowed, so that the lead 13 of the lamp inserted in the gap 326 is brought into contact with the contact plate spring. In close contact with the 322b and 324b, power is applied to the lead 13 of the lamp.

FIG. 17 is a diagram showing a case in which a tab is added in the upward direction to the configuration of FIG. 14 as a first modification of the third embodiment, and FIG. 18 shows a connection state through the tab in the first modification of the second embodiment. One drawing.

In the case where the power connection device 300 of the third embodiment without the above-described tab is installed in the direct type backlight device, the welding unit 312 of the base is directly welded to the backlight substrate 20, and then the inverter 20 is powered on the substrate 20. Connect and apply power to each power connection device 300 collectively.

However, in the first modification of the third embodiment, as shown in FIG. 18, the tab 370 is disposed on one surface of the base 310 in an upward direction, and the receptacle 32 bound to one direction of the power connection cable 34 is formed. It is connected to the inverter in the other direction to be connected to each lamp 10 can be individually supplied with power.

FIG. 19 is a view showing a case in which a tab is added downward in the configuration of FIG. 14 as a second modification of the third embodiment, and FIG. 20 shows a connection state through the tab in the second modification of the second embodiment. One drawing.

In the first modification of the third embodiment in which the tab 370 described above is installed upward, as illustrated in FIG. 18, the tab 370 is installed on one surface of the base 310 in an upward direction to form the power connection cable 34. It is connected to the receptacle 32 bound in one direction and connected to the inverter in the other direction so that power can be supplied to each lamp 10 individually.

However, in the second modified example of the third embodiment, as shown in FIG. 20, the tab 380 is disposed on one surface of the base 310 in a downward direction so as to be inserted directly into the power connection connector 36 below the backlight substrate. It is supposed to be. Since the power connection device of the second modification of the third embodiment is directly connected to the power connection connector 36 without a separate power cable or receptacle, the process cost according to the wiring can be reduced and a more compact structure is possible.

[4th Example ]

21 is a front perspective view showing a power connection device according to a fourth embodiment of the present invention, Figure 22 is a rear perspective view showing a power connection device according to a fourth embodiment of the present invention, Figure 23 is a view of the present invention 4 is a perspective view of a state in which a lamp is fastened to a power connection device according to a fourth embodiment. 24 to 27 are operating state diagrams showing an operating mechanism according to a fourth embodiment of the present invention.

Power supply device 400 according to the fourth embodiment of the present invention, as shown in Figure 21 to Figure 23, the base 410 and the lamp lead receiving port 420, lamp tube guide 440, cam spring ( 450, and a pressurizing cam 460.

The base 410 of the fourth embodiment may be formed with a tab contact portion 470 for receiving electricity by contact with the tab, the lamp lead receiving port 420 of the fourth embodiment extends vertically from the base 410 And a pair of leaf springs 422 and 424 facing each other. And both ends of each of the leaf spring (422,424) is bent in the U-shape is configured to be the contact plate spring (422b-1,422b-2,424b-1,424b-2) in contact with the lead 13 of the lamp, It is configured to be the pressing plate springs (422a, 424a) by protruding obliquely outward the central portion of the opposite side of the facing surface. In addition, hooks 422d and 424d are formed on the upper sides of the leaf springs 422 and 424 to engage the pressure cams 460. Thus, the lamp lead receiver 420 of the fourth embodiment has two pressing plate springs 422a and 424a, four contact plate springs 422b-1, 422b-2, 424b-1 and 424b-2, and two hooks ( 422d, 424d).

In addition, the lamp tube guide 440 of the fourth embodiment is configured to prevent the lamp 10 from being pulled out by fastening the lamp 10 by the force of the entrance smaller than the diameter of the lamp and contacting the lid 13 of the lamp. The contact plate springs 422b-1, 422b-2, 424b-1, 424b-2 are four, so that the coupling is secured even when the lamp lead guides 130, 230, 330 in the other embodiment are removed.

After mounting the lamp 10 in the power connection device 400 of the fourth embodiment, the operation mechanism until the pressing cam 460 is fastened to the hooks 422d and 424d by pressing the pressing cam 460 will be described. Is the same as

When the pressurization cam 460 starts to be pressed after the lamp is mounted, as shown in FIG. 24, the pressurization cam 460 presses the pressurized leaf springs 422a and 424a which are opened while descending along the movement path L. To move toward the lid 13 of the lamp. Accordingly, the pressing leaf springs 422a and 424a and the contact leaf springs 422b-1, 422b-2, 424b-1 and 424b-2 are connected to the lead of the lamp along the operation line R1 in the direction of the arrow A with respect to the center of rotation a. Move until it comes in contact with 13). The drawing shows only the operating state of the leaf spring 424 on one side, but the operating state of the leaf spring 422 on the other side is also the same.

When the contact plate springs 422b-1, 422b-2, 424b-1, 424b-2 and the lid 13 of the lamp come into contact with each other, the movement is stopped, and the pressing cam 460 is kept pressed, as shown in FIG. The pressing plate springs 422a and 424a are moved along the operation diagram R2 in the direction of the arrow with respect to the rotation center b. In this case, the contact leaf springs 422b-1, 422b-2, 424b-1, 424b-2 do not move in contact with the lid 13 of the lamp.

Thereafter, as shown in FIG. 26, when the pressure leaf springs 422a and 424a come into contact with the lower sides of the leaf springs 422 and 424, the movement of the pressure leaf springs 422a and 424a is also stopped and the pressure cam 460 is pressed. Pressing continuously, as shown in FIG. 27, the pressure plate springs 422a and 424a are pushed to a horizontal state, and shape deformation is generated along the operation lines R3 to R5 based on the centers of rotation d, e and f. The contact plate springs 422b-1, 422b-2, 424b-1, 424b-2 are pressed from both sides by the restoring force of the springs 422a, 424a. Therefore, the contact leaf springs 422b-1, 422b-2, 424b-1, 424b-2 and the lid 13 of the lamp are dually pressed by the pressure cam 460 and the pressure leaf springs 422a and 424a.

28 is a view showing an example in which the electrical connection with the inverter is made by the tab contact portion formed in the base in the power connection device of the fourth embodiment according to the present invention, Figure 29 is an electrical connection with the pocket in the power connection device of the fourth embodiment It is a figure which shows the example which makes an electrical connection with an inverter using a connection mechanism.

In the power connection device 400 according to the fourth embodiment of the present invention, as shown in FIG. 28, the tab contact portion 470 is formed on the base 410, and is coupled to the tab 42 of the inverter 40 so that the inverter ( As shown in FIG. 29, the power connection mechanism 480 is inserted into the pocket 50 at regular intervals, assembled to the backlight unit BLU, and then the inverter 40 is slid. Inserted into the pocket 50 may be mechanically connected to the power supply connection mechanism 480 to make an electrical connection.

The present invention has been described above with reference to one embodiment shown in the drawings, but those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

1 is a perspective view showing a power connection device according to a first embodiment of the present invention;

2 is a plan view showing a power connection device according to a first embodiment of the present invention;

3 is a rear view showing a power connection device according to a first embodiment of the present invention;

4 is a perspective view showing a state in which a lamp is mounted on a power connection device according to a first embodiment of the present invention;

5 is a view for explaining the operation of the lamp lead receiving device according to the first embodiment of the present invention;

6 is a view showing a case in which a tab is added upward as a modification of the first embodiment of the present invention;

7 is a view showing a connection state through the tab in a modification of the first embodiment,

8 is a front perspective view showing a power connection device according to a second embodiment of the present invention;

9 is a rear perspective view showing a power connection device according to a second embodiment of the present invention;

10 is a view for explaining a lamp lead receiving device according to a second embodiment of the present invention;

11 is a view showing a state in which the pressing cam is engaged with the hook in the second embodiment of the present invention,

12 is a view showing a case in which a tab is added upward as a modification of the second embodiment of the present invention;

FIG. 13 is a view showing a connection state through a tab in a modification of the second embodiment of the present invention. FIG.

14 is a perspective view showing a power connection device according to a third embodiment of the present invention;

15 is a rear view showing a power connection device according to a third embodiment of the present invention;

16 is a perspective view showing a state in which a lamp is mounted on a power connection device according to a third embodiment of the present invention;

17 is a view showing a case in which a tab is added upward as a first modification of the third embodiment of the present invention;

18 is a view showing a connection state through the tab in the first modification of the third embodiment of the present invention;

19 is a view showing a case in which a tab is added downward as a second modification of the third embodiment of the present invention;

20 is a view showing a connection state through the tab in the second modification of the third embodiment of the present invention;

21 is a front perspective view showing a power connection device according to a fourth embodiment of the present invention;

22 is a rear perspective view showing a power connection device according to a fourth embodiment of the present invention;

23 is a perspective view of a state in which a lamp is fastened to a power connection device according to a fourth embodiment of the present invention;

24 to 27 is a view showing the operating mechanism of the power connection device according to a fourth embodiment of the present invention,

FIG. 28 is a view showing an example in which electrical connection with an inverter is made by a tap contact portion in a fourth embodiment of the present invention;

FIG. 29 is a diagram showing an example in which electrical connection with an inverter is made using a pocket and an electrical connection mechanism in a fourth embodiment of the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

10: lamp 11: tube

13: Lead 100,200,300,400: Power connector

110, 210, 310, 410: base 120, 220, 320, 420: lamp lead receiving opening

122,124,222,224,322,324,422,424: leaf spring

130,230,330: Lamp lead guide

140,240,340,440: Lamp tube guide

150,250,350,450: cam spring

160,260,360,460: pressurized cam

170,270,370,380: tab 470: tap contacts

Claims (16)

A power supply connecting device for a backlight device for connecting a power supply from an inverter to a lamp having a protruding lead, A base attached to the substrate of the backlight device; A lamp lead receiver configured to be bent a pair of leaf springs attached to the base to form a space for accommodating a lead of the lamp; A lamp lead guide attached to the base to stably support the lead of the lamp; A lamp tube guide attached to the base to stably support the tube of the lamp; A cam spring having an elastic structure to provide a restoring force; And A space for contacting the lamp lead receiving port is formed while surrounding the lamp lead receiving port. When an external force is applied, the cam spring is deformed. When the external force is removed, the lamp lead receiving port is restored by the restoring force of the cam spring. Power supply device for a direct type backlight device including a pressurizing cam for pressurizing. The method of claim 1, wherein the lamp lead receiving port The pair of leaf springs is bent so that the ends thereof abut each other, so that the outer leaf spring portion forms a pressurizing leaf spring, the inner leaf spring forms a contact leaf spring, and grooves at each end of the contact leaf spring And a lead contact part formed to be in contact with the lamp lead. The method of claim 2, wherein the lamp lead receiving port When an external pressure is applied to the pressure cam to mount the lamp, the leaf spring of the lamp lead receiving port is restored so that the pressure plate spring is inclined outward at an angle of θ ₁ , and the contact plate spring is inclined at angle of θ ₂ . The lead contact is opened, When the external pressure of the pressure cam is removed after mounting the lamp, the pressure cam is continuously restored by the restoring force of the cam spring, and the pressure plate spring is continuously applied to narrow the pressure plate spring at an angle of _{1 '} . And the contact plate spring is narrowed at an angle of θ _{2 '} so that the lead contact portion and the lead of the lamp come into close contact with each other. 4. The method of claim 3, of the pressing plate angle change amount of the spring (θ ₁ -θ _{1 ')} wherein the amount of change of the spring contact plate angle (θ ₂ -θ _2' direct backlight, characterized in that equal to or greater than) the device Power connection device. The method of claim 1, wherein the lamp lead receiving port The pair of leaf springs is bent so that the ends thereof abut each other, so that the outer leaf spring portion forms a pressing leaf spring, the inner leaf spring forms a contact leaf spring, and a recess is formed in the contact leaf spring to A lead contact is formed to be in contact with the lead, The pressing plate spring is a power connection device for a direct type backlight device, characterized in that a hook for fastening with the pressing cam is formed. The method of claim 5, wherein the lamp lead receiving port The plate spring of the lamp lead receiving port is restored in the state that there is no external pressure in the pressing cam so that the pressing plate spring and the contact plate spring are inclined outward at a predetermined angle to open the lead contact portion. When the pressurizing cam is pressed with an external pressure, the pressurizing plate spring is compressed inward, and when the pressurizing cam is lowered below the hook to remove the external pressure, the pressurizing plate spring is restored to the outside again and the pressurizing cam is caught by the hook. Fastened, In the state where the pressure cam and the hook are engaged, the pressure cam continuously pressurizes the pressure plate spring by the restoring force of the cam spring to narrow the pressure plate spring and the contact plate spring so that the lead contact portion and the lamp lead Power supply device for a direct type backlight device, characterized in that the close contact with each other. The method of claim 1, wherein the cam spring is And a leaf spring extending upwardly from one end of the base and being bent in a U-shape or a leaf spring extending upwardly from one end of the base and being bent in multiple stages. The method of claim 1, wherein the lamp lead receiving port, A pair of leaf springs are bent outwardly at predetermined intervals to receive the lid of the lamp at the center so that the outer leaf spring portion forms a pressing leaf spring, the inner leaf spring forms a contact leaf spring, and the pressing plate The spring has a hook for fastening with the pressing cam is formed, the contact plate spring is formed with a projection for fastening the lead of the lamp, The cam spring is a leaf spring connected to the plate forming the lamp tube guide. The cam spring is released before the lamp is mounted and the pressurizing cam is connected to the lamp lead receiving port after the lamp is mounted. And a restoring force is provided to the pressurizing cam to apply pressure to the leaf spring of the tool. The method of claim 8, wherein the lamp lead receiving port The lead of the lamp can be inserted in the interval between the contact plate spring without the external pressure in the pressure cam, When the pressurizing cam is pressed by applying an external pressure, the pressurizing plate spring is compressed inward, and when the pressurizing cam is lowered below the hook to remove the external pressure, the pressurizing plate spring is restored to the outside and the pressing cam is caught by the hook. Fastened to each other, When the pressure cam and the hook are engaged, when the pressure cam presses the pressure plate spring by the restoring force of the cam spring, the pressure plate spring is elastically deformed, so that the distance between the contact plate spring and the pressure plate spring is increased. And the contact plate spring is brought into close contact with the lead of the lamp in proportion to the change amount of the gap. According to claim 1, wherein the power connection device By installing tabs protruding upward in the base, connecting the receptacle bound to one direction of the power connection cable and the tab, and the other direction of the power connection cable is connected to the inverter, it is possible to supply power to each lamp individually Power supply device for a direct type backlight device, characterized in that. According to claim 1, wherein the power connection device And a tab protruding downward in the base to be directly connected to a power connector of the backlight device, so that power can be supplied to each lamp individually. According to claim 1, wherein the power connection device The tab contact portion is formed in the base to be in direct contact with the power supply tap of the backlight device, it is possible to supply power to each lamp individually power supply device for a direct type backlight device. delete The method of claim 1, wherein the lamp lead receiving port The central portion of the pair of leaf springs extending from the base protrudes outward to form a pressing plate spring, and both sides are bent inward to form a contact plate spring portion, and the end of the leaf spring is bent outward to hook the hook. A power connection device for a direct type backlight device, characterized in that the formation. The method of claim 1, wherein the lamp lead receiving port It consists of a pair of leaf springs extending vertically from the base and facing each other. Both ends of each of the leaf springs are bent contact plate springs in contact with the lead of the lamp, and the opposite surface of the face springs are projected to be inclined outwards to the center of the opposite surface is a pressure plate spring, Power connection device for a direct type backlight device, characterized in that a hook for fastening with the pressing cam is formed on the upper side. The method of claim 1, wherein the lamp tube guide The inlet is smaller than the diameter of the lamp, the power connection device for a direct type backlight device, characterized in that the lamp is prevented from coming off by forcibly fitting the lamp.

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