KR20040029233A - Back light - Google Patents

Abstract

PURPOSE: A back light is provided to pressurize each luminous lamp by using hooks of lamp fixing apparatuses, and to couple the luminous lamps together, then to fix the luminous lamps by installing upper lamp holders independently from lower lamp holders, thereby stably fixing the lamps and improving efficiency of the lamps. CONSTITUTION: Many luminous lamps(31) are arrayed in a row. The first and second lower apparatuses(41a,41b) have lower lamp holders(55), and are separated at certain intervals. Conductive layers(47a,47b) apply power to the luminous lamps(31). Many upper lamp holders(56) are independently disposed by corresponding to the lower lamp holders(55) in order to fix the luminous lamps(31) with the lower lamp holders(55). Lamp fixing apparatuses(57) have hooks in lower parts in order to fix the luminous lamps(31) to the first and second lower apparatuses(41a,41b) with the upper/lower lamp holders(56,55).

Description

Back light {BACK LIGHT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back light, and more particularly, to a back light for a liquid crystal display device having improved adhesion and assembly by fastening a lamp electrode part using a hook.

CRT (Cathode Ray Tube), one of the commonly used display devices, is mainly used for monitors such as TVs, measuring devices, and information terminal devices.However, due to the weight and size of the CRT itself, Could not respond actively to demands.

Therefore, in the trend of miniaturization and light weight of various electronic products, CRT has a certain limit in weight and size, and is expected to replace the liquid crystal display (LCD) and gas discharge using electro-optic effects. Plasma Display Panels (PDPs) and Electro Luminescence Displays (ELDs) using electroluminescent effects are used. Among them, research on liquid crystal displays is being actively conducted.

In order to replace the CRT, liquid crystal display devices having advantages such as small size, light weight, and low power consumption have been actively developed. Recently, the liquid crystal display device has been developed enough to perform a role as a flat panel display device. As it is used for a monitor of a desktop computer and a large information display device, the demand for a liquid crystal display device is continuously increasing.

Since most of the liquid crystal display devices are light-receiving devices that display images by controlling the amount of light coming from the outside, a separate light source, that is, a back light, for irradiating light to the LCD panel is necessary.

In general, a backlight used as a light source of a liquid crystal display device is a method of arranging a cylindrical light emitting lamp, and is classified into an edge method and a direct method.

In the double-edge method, the lamp unit is installed on the side of the light guide plate for guiding the light, and the lamp unit covers a lamp emitting light, a lamp holder inserted at both ends of the lamp to protect the lamp, and an outer circumferential surface of the lamp, and one side It is provided with a lamp reflector plate fitted to the side of the light guide plate to reflect the light emitted from the lamp toward the light guide plate.

The edge method in which the lamp unit is installed on the side of the light guide plate is applied to a relatively small liquid crystal display device such as a monitor of a laptop computer and a desktop computer, and has good uniformity of light and a long service life. It is advantageous to thin the liquid crystal display device.

On the other hand, the direct method began to develop mainly as the size of the liquid crystal display device became larger than 20 inches, and arranged a plurality of lamps in a row on the lower surface of the diffuser plate to direct light directly to the front of the LCD panel. will be.

The direct method is mainly used for a large screen liquid crystal display device requiring high luminance because the light utilization efficiency is higher than that of the edge method.

However, the liquid crystal display device adopting the direct method is used as a large monitor or a television, so it takes longer to use than a laptop computer and the number of lamps is larger, so the liquid crystal of the direct method is lower than the edge type liquid crystal display device. It is more likely that a lamp that will not turn on will appear due to the failure and life of the lamp in the display.

In addition, in the edge method in which the lamp units are installed on both side surfaces of the light guide plate, due to the life and failure of the lamp, for example, when only one lamp is not turned on, only the brightness on the screen is lowered. However, in the direct method, since a plurality of lamps are installed at the bottom of the screen, for example, due to the life and failure of the lamp, if one lamp does not light up, the part where the lamp is not lit becomes significantly darker than the other part. The part that does not appear immediately on the screen.

For this reason, since the lamp is frequently replaced in the direct type liquid crystal display device, the direct type liquid crystal display device should have an easy structure for disassembling and assembling the lamp unit.

Hereinafter, a direct backlight for a liquid crystal display device according to the prior art will be described with reference to the accompanying drawings.

1 is a perspective view of a direct backlight for a conventional liquid crystal display, and FIG. 2 is a view showing a power lead wire connected to a conventional light emitting lamp and a connector.

As shown in FIG. 1, a conventional backlight for a liquid crystal display device includes a plurality of light emitting lamps 1, an outer case 3 for fixing and supporting the light emitting lamps 1, and the light emitting lamps 1. Light scattering means 5a, 5b, 5c disposed between the liquid crystal panels (not shown).

The light scattering means (5a, 5b, 5c) is to prevent the shape of the light emitting lamp from appearing on the display surface of the liquid crystal panel and to provide a light source having an overall uniform brightness distribution, in order to enhance the light scattering effect A plurality of diffusion sheets, diffusion plates, and the like are disposed between the cells.

The inner surface of the outer case 3 is disposed with a reflector 7 so that the light emitted from the light emitting lamp 1 can be concentrated to the display of the liquid crystal panel, in order to maximize the utilization efficiency of the light.

The light emitting lamp 1 is a Cold Cathode Fluorescent Lamp (CCFL) as shown in FIG. 2, and electrodes 2 and 2a are disposed at both ends of a tube to emit light when power is applied to the electrode. Both ends of the light emitting lamp 1 are fitted in grooves formed on both sides of the outer case 3 as shown in FIG. 1.

Power lead wires 9 and 9a for transmitting power for driving the lamp are connected to both electrodes of the light emitting lamp, and the power lead wires 9 and 9a are connected to a separate connector 11 and connected to the driving circuit. Therefore, a separate connector 11 is required for each light emitting lamp 1.

That is, a power lead wire 9 connected to one electrode 2 of the light emitting lamp and a power lead wire 9a connected to the other electrode 2a are connected to one connector 11, and among the power lead wires 9 and 9a. One is bent to the bottom of the outer case (3) is connected to the connector (11).

However, in such a backlight for a liquid crystal display device, since a connector is connected to a power supply lead of a light emitting lamp and connected to a driving circuit, a connector is required for each light emitting lamp so that wiring is complicated and the thickness of the backlight is reduced. By connecting the connector to the connector by bending the power lead line, not only the work efficiency is lowered, but also a separate work is required for this, which increases the process time and decreases the productivity.

In addition, in order to connect the electrode and the connector, a hole penetrating the outer case must be drilled and both electrodes of the light emitting lamp must be inserted into the hole so that both electrodes of the light emitting lamp are exposed to the outside of the outer case. Falling and maintenance of the luminous lamp is difficult.

The present invention has been made to solve the above problems of the prior art, an object of the present invention by using a lamp fixing mechanism having a hook (hook) by fastening the lamp electrode unit to improve the adhesion and assembling, maintenance, repair To provide an easy backlight.

Another object of the present invention is to provide a backlight having a structure capable of preventing damage to the light emitting lamp from an external impact.

Another object of the present invention is to provide a backlight capable of mechanically / electrically stabilizing lamp electrode connections.

1 is a perspective view of a conventional direct backlight

2 is a view showing a connector connected to a conventional light emitting lamp

3a and 3b is a view showing a light emitting lamp applied to the present invention

4 is a perspective view before coupling of the direct type backlight according to the first embodiment of the present invention;

Figures 5a to 7b is a perspective view before coupling of the various forms of the hook-shaped lamp fixture and the upper lampholder applied to Figure 4

8A to 8D are cross-sectional views of various types of the lamp fixing mechanism, the upper lamp holder, the light emitting lamp, the conductive layer, the lower lamp holder and the lower mechanism applied to FIG.

9 is a perspective view before coupling of the direct type backlight according to the second embodiment of the present invention;

10A to 12B are perspective views of various forms of coupling between the lamp fixing mechanism and the upper lamp holder having a hook applied to FIG. 9.

13A to 13D are cross-sectional views of various types of lamp fixing devices, upper lamp holders, light emitting lamps, conductive layers, lower lamp holders, and lower devices applied to FIG.

Explanation of symbols on the main parts of the drawings

31: light emitting lamp 33, 33b: external electrode

41a, 41b: 1st, 2nd lower mechanism 47a, 47b: conductive layer

55: lower lamp holder 56: upper lamp holder

57: lamp fixture

The backlight of the present invention for achieving the above object comprises a plurality of light emitting lamps arranged in a line; First and second lower mechanisms having a plurality of lamp holder fastening parts and disposed opposite the light emitting lamps; A plurality of lower lamp holders disposed in the lamp holder fastening part in a shape capable of accommodating the light emitting lamp; A plurality of upper lamp holders independently disposed at an upper portion corresponding to the lower lamp holder in a shape capable of accommodating the light emitting lamps; A conductive layer disposed in the lower lamp holder and the first and second lower mechanisms in a shape capable of accommodating the light emitting lamp; And a lamp fixing mechanism provided with a hook under the leg to fix the upper and lower lampholders and the light emitting lamp to the first and second lower mechanisms.

The upper and lower lamp holders and the lamp fixing mechanism are configured in one-to-one correspondence with the light emitting lamps.

The upper and lower lamp holders and the lamp fixing mechanism are configured to fix at least two or more of the light emitting lamps as a unit.

One of the upper lamp holder or the lower lamp holder is configured to fix the light emitting lamps one by one, and the other is configured to fix the two or more light emitting lamps as a unit.

The lamp fixture may be configured to have at least two legs.

Grooves or holes are formed in the first and second lower mechanisms at positions corresponding to the legs of the lamp fixing mechanism.

The upper lamp holder is characterized by forming a hexahedron shape.

The upper lampholder is formed with a groove in the leg position of the lamp fixing mechanism.

The hook of the lamp fixing mechanism is characterized in that it faces inward or outward.

The upper and lower lamp holders are insulators, and are made of an elastic material or a hard material such as rubber, acrylic, polycarbonate (PC) or plastic.

The conductive layers are respectively in contact with one surface of the light emitting lamp, are arranged to be connected in the longitudinal direction of the first lower mechanism, and the ends are configured to extend out of the fixture.

The conductive layer is made of a well-electric material such as a metal plate or a conductive coating film.

Diffusion sheet and diffusion plate for scattering the light emitted from the light emitting lamp so that the light source can be uniformly distributed on the display surface of the liquid crystal panel above the lamp fixing mechanism and the light emitting lamps. Light scattering means is further arranged.

A reflecting plate is further disposed between the first and second lower mechanisms and a lower surface including the light emitting lamp.

The light emitting lamp uses an external electrode light emitting lamp having electrodes at both ends or a light emitting lamp of a non-electrode.

Hereinafter, a backlight according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3A and 3B are light emitting lamps for applying to a backlight according to the present invention, and FIG. 3A is a light emitting lamp of an electrode having no electrode formed outside the tube, and FIG. 3B is an external electrode 33 at both ends of the outside of the tube. , 33a) is an External Electrode Fluorescent Lamp (EEFL).

Hereinafter, although only the light emitting lamp of the electrodeless of FIG. 3A is shown in FIGS. 4 and 9, a light emitting lamp having external electrodes formed at both ends of the outside of the tube of FIG. 3B may also be applied.

The backlight according to the present invention is a direct-type backlight, a lower mechanism having a lower lamp holder for saturating the light emitting lamp, upper lamp holders formed independently to correspond to the lower lamp holders, and upper and lower lamp holders. And a lamp fixing mechanism provided with a hook under the leg to couple the light emitting lamp to the lower mechanism.

The backlight of the present invention can be modified in various ways depending on the shape of the upper, lower lamp holder and lamp fixing mechanism.

Hereinafter, with reference to the accompanying drawings will be described by dividing the backlight of the present invention by embodiment.

First embodiment

4 is a perspective view before coupling of the direct type backlight according to the first embodiment of the present invention.

Although only the light emitting lamp of the electrodeless of FIG. 3A is shown in FIG. 4, a light emitting lamp (external electrode light emitting lamp) in which external electrodes 33 and 33a are formed at both ends outside the tube of FIG. 3B is also applicable.

As shown in FIG. 4, the backlight according to the first embodiment of the present invention includes a plurality of light emitting lamps 31 arranged in a line and lower lamp holders 55 and is isolated at regular intervals. A lower portion for fixing the light emitting lamp 31 together with the second lower mechanisms 41a and 41b, conductive layers 47a and 47b for applying power to the light emitting lamps 31, and a lower lamp holder 55; The first and second lower mechanisms 41a and 41b may include a plurality of upper lampholders 56 that are independently disposed on the upper side corresponding to the lampholders 55, upper and lower lampholders 56 and 55, and a light emitting lamp. In order to fasten to the hook (hook) is provided at the bottom of the leg was composed of a lamp fixing mechanism (57).

In addition to the above configuration, a reflector (not shown) is disposed on a lower surface including the first and second lower mechanisms 41a and 41b and the light emitting lamp 31 so as to concentrate the light emitted from the light emitting lamp 31 toward the liquid crystal panel. Can be placed.

The first and second lower mechanisms 41a and 41b include a lampholder fastening part that forms a groove to fix the plurality of lampholders 55, wherein the lampholder fastening part is pulled forward by the lampholder 55. It is formed with a threshold to prevent it from coming out.

In addition, the first and second lower mechanisms 41a and 41b do not have thresholds and the lower bottoms protrude further into the light emitting lamps, so that the lampholder fastening portions may not be provided with the jaws, and the bottoms thereof may be exposed.

The lower lamp holders 55 are fastened to the lamp holder fastening portions of the first and second lower mechanisms 41a and 41b, and the shape of the lower lamp holders 55 may accommodate the light emitting lamp on the surface accommodating the light emitting lamp 31. It is made of elastic material.

The conductive layers 47a and 47b may have first and second lower mechanisms on the lower lamp holder 55 and the first and second lower mechanisms 41a and 41b which have a shape capable of receiving the light emitting lamp 31. It is formed in the shape of a plate having curvature in accordance with the lengths of the portions 41a and 41b.

The upper lampholders 56 hold and support the light emitting lamp 31 together with the first and second lower mechanisms 41a and 41b and the lower lampholder 55 to receive the light emitting lamp 31. The lower lamp holder 55 is independently formed in a shape capable of accommodating the light emitting lamp 31 on one surface thereof.

The lamp fixing mechanism 57 includes two or more hook-shaped legs, and the length of the legs of the lamp fixing mechanism 57 is an upper and lower lamp holders 56 in which a light emitting lamp 31 is fastened therein. It is formed longer than the bonding length of 55.

The first and second lower mechanisms 41a and 41b and the upper and lower lamp holders 56 and 55 are insulators and are made of an elastic material or a hard material. For example, rubber, acrylic, and PC (polycarbonate) ) And plastics.

Although not shown in the drawings, the light emitted from the light emitting lamp 31 may be provided on the upper side of the upper lamp holder 56 and the lamp fixing mechanism 57 so that a uniform light source distribution may be formed on the display surface of the liquid crystal panel. Light scattering means such as a diffusing sheet and a diffusing plate for scattering may be further disposed.

The conductive layers 47a and 47b are arranged to be connected in the lengthwise direction of the first and second lower mechanisms, and are applicable to a material that is well-conducted such as a metal plate, a conductive paste, or a conductive coating film.

In addition, the conductive layers 47a and 47b are finally connected to an output terminal of a driving device (not shown in the drawing) for exiting each apparatus and lighting lamps.

As the light emitting lamp, when the light emitting lamp (external electrode light emitting lamp) having electrodes formed at both ends as shown in FIG. 3B is applied, the conductive layers 47a and 47b serve only as a power supply connection part, but the electrodeless as shown in FIG. 3A. When the light emitting lamp is applied, the conductive layers 47a and 47b also serve as electrodes.

Meanwhile, the upper lamp holder 56 and the lamp fixing mechanism 57 fastened to the first and second lower mechanisms 41a and 41b may be variously modified as shown in FIGS. 5 to 8.

5, 6, and 7 are enlarged forms of the lamp fixing mechanism 57 and the upper lamp holder 56 among the fixtures, which will be described in detail below.

As shown in FIG. 5A, the lamp fixture 57 may have four legs and may be configured such that the hook is directed outward or inward.

In addition, as shown in FIG. 5B, the upper lamp holder 56 may be formed to be fixed in a rectangular parallelepiped shape inside the leg of the lamp fixing mechanism 57 shown in FIG. 5A, and grooves may be formed at four corners so that the legs are caught. It may be formed to have a groove, and may be formed to extend / protrude in the longitudinal direction of the first, second lower mechanism (41a, 41b) having a groove in the four corners.

Next, as shown in FIG. 6A, the lamp fixing mechanism 57 may have two legs. In this case, as shown in FIG. 6B, the upper lamp holder 56 may be fixed to the inside of the lamp fixing mechanism 57. Form.

In this way, even when there are two legs, the hooks under the legs may be directed to the outside or the inside.

As shown in FIG. 7A, the lamp fixing mechanism 57 may be formed to have a total of six legs, each having three legs on the left and right sides except for the surface to which the light emitting lamp 31 is fastened. As shown in FIG. 7B, the upper lamp holder 56 is formed in a hexahedral shape to enter the lamp fixing mechanism 57, or has six grooves so that six legs are caught in the left and right directions of the lamp fixing mechanism 57. It can also be formed in a cube shape.

In this case, the hook of the lower part of the leg may be directed to the outside or the inside.

Although not shown in the drawings, the lamp fixing mechanism 57 having a hook may be formed to have more legs in addition to two, four, and six legs.

Next, the combination of the lamp fixing mechanism 57, the upper and lower lamp holders 56 and 55, the conductive layer 47b, the light emitting lamp 31 and the second lower mechanism 41b provided with a hook is provided. It demonstrates.

As shown in FIG. 8A, the upper lamp holder 56 is fixed to the lower part of the lamp fixing mechanism 57, and the light emitting lamp 31 is fastened between the upper lamp holder 56 and the lower lamp holder 55. The conductive layer 47b is formed along the surface of the lower lamp holder 55, and the groove of the lamp fixing mechanism 57 is fastened to the second lower mechanism 41b around the lower lamp holder 55. Inner holes are formed.

At this time, the number of grooves or holes formed in the second lower mechanism 41b is determined according to the number of legs of the lamp fixing mechanism 57.

That is, a groove or a hole is formed in the second lower mechanism 41b at a position corresponding to the leg of the lamp fixing mechanism 57.

In addition, the groove or hole formed in the second lower mechanism 41b secures the hook of the leg of the lamp fixing mechanism 57 to the lower surface of the second lower mechanism 41b as shown in FIGS. 8A and 8B. In order to penetrate the second lower mechanism 41b, a hook (below) may be formed below the second lower mechanism 41b to fix the inside of the second lower mechanism 41b as shown in FIGS. 8C and 8D. It can also be formed in a wider width at the bottom so that it hooks.

8A and 8C illustrate a form in which a hook is directed toward the outside of the lamp fixing mechanism 57, and FIGS. 8B and 8D illustrate a form in which the hook is directed into the lamp fixing mechanism 57. It is shown.

As described above, when the lamp fixing mechanism 57 is fixed to the first and second lower mechanisms 41a and 41b by applying a pressure with a hook through the groove, the lamp can be stably fixed from vibration or external impact. .

Second embodiment

9 is a perspective view before coupling of the direct type backlight according to the second embodiment of the present invention.

Although only the light emitting lamp of the electrodeless of FIG. 3A is shown in FIG. 9, a light emitting lamp (external electrode light emitting lamp) having external electrodes formed at both ends of the outside of the tube of FIG. 3B may also be applied.

As shown in FIG. 9, the backlight according to the second embodiment of the present invention includes a plurality of light emitting lamps 31 arranged in a line and a lower lamp disposed corresponding to one light emitting lamp 31 one by one. First and second lower mechanisms 41a and 41b having a holder 55 and isolated at regular intervals, conductive layers 47a and 47b for applying power to the light emitting lamps 31, and a lower lamp holder. A plurality of upper lamp holders 56, upper and lower lamp holders 56 and 55, and a light emitting lamp that are independently disposed on the upper part corresponding to the two light emitting lamps 31 one by one with the 55, respectively. In order to fix the second lower mechanism (41a, 41b), a hook (hook) is provided on the lower part of the leg and consists of a lamp fixing mechanism (57).

In addition to the above configuration, the reflecting plate 44 is disposed on the lower surface including the first and second lower mechanisms 41a and 41b and the light emitting lamp 31 so as to concentrate the light emitted from the light emitting lamp 31 toward the liquid crystal panel. Can be placed.

The first and second lower mechanisms 41a and 41b include a lampholder fastening portion that forms a groove to fix the plurality of lower lampholders 55, wherein the lampholder fastening portion is formed by the lower lampholder 55. It is formed with a threshold to prevent it from coming out.

In addition, the lower lamp holder 55 may be formed to have a wider width than in the first embodiment to fasten the two light emitting lamps 31 in one unit.

In addition, the first and second lower mechanisms 41a and 41b may have a lower bottom and protrude further into the light emitting lamp without the threshold, so that the lampholder fastening portion may have a bottom without the jaw.

The lower lamp holders 55 are fastened to the lamp holder fastening portions of the first and second lower mechanisms 41a and 41b. When the lower lamp holders 55 receive the one light emitting lamp 31 as a unit, the lower lamp holders 55 may receive the light emitting lamps. It has one groove so that it can have two grooves to accommodate the light emitting lamp 31 when accommodating two light emitting lamps as a unit.

The conductive layers 47a and 47b may have lower and lower lampholders 55 and a lower surface of the first and second lower mechanisms 41a and 41b. It is formed in the shape of a plate having curvature in accordance with the lengths of the mechanisms 41a and 41b.

The upper lampholders 56 hold and support the light emitting lamp 31 together with the first and second lower mechanisms 41a and 41b and the lower lampholder 55 to receive the light emitting lamp 31. The lower lamp holder 55 is independently formed in a shape capable of accommodating the two light emitting lamps 31 on one surface thereof.

The first and second lower mechanisms 41a and 41b and the upper and lower lamp holders 56 and 55 are insulators and are made of an elastic material or a hard material. For example, rubber, acrylic, and PC (polycarbonate) ) And plastics.

The lamp fixing mechanism 57 is provided with two or more legs having a hook shape at the bottom, and the leg length of the lamp fixing mechanism 57 is an upper and lower lamp holders to which the light emitting lamp 31 is fastened. It is formed longer than the bonding length of (56, 55).

Although not shown in the drawings, the light emitted from the light emitting lamp 31 may be provided on the upper side of the upper lamp holder 56 and the lamp fixing mechanism 57 so that a uniform light source distribution may be formed on the display surface of the liquid crystal panel. Light scattering means such as a diffusing sheet and a diffusing plate for scattering may be further disposed.

The conductive layers 47a and 47b are arranged to be connected in the lengthwise direction of the first and second lower mechanisms, and are applicable to a material that is well-conducted such as a metal plate, a conductive paste, or a conductive coating film.

In addition, the conductive layers 47a and 47b are finally connected to an output terminal of a driving device (not shown in the drawing) for exiting each apparatus and lighting lamps.

As the light emitting lamp, when the light emitting lamp (external electrode light emitting lamp) having electrodes formed at both ends as shown in FIG. 3B is applied, the conductive layers 47a and 47b serve only as a power supply connection part, but the electrodeless as shown in FIG. 3A. When the light emitting lamp is applied, the conductive layers 47a and 47b also serve as electrodes.

Meanwhile, the upper lamp holder 56 and the lamp fixing mechanism 57 fixed to the first and second lower mechanisms 41a and 41b to fasten the two lamps in one unit, as shown in FIGS. 10 to 12. Various changes may be made.

10 to 12 are enlarged shapes of the lamp fixing mechanism 57 and the upper lamp holder 56 of the fixture, which will be described in detail below.

As shown in FIG. 10A, the lamp fixture 57 may have four legs and may be configured such that a hook is directed outward. Alternatively, although not shown in the drawing, the hook may be configured to face inward.

As shown in FIG. 10B, the upper lamp holder 56 may be formed to be fixed in a rectangular parallelepiped shape inside the leg of the lamp fixing mechanism 57 shown in FIG. 10A. It may be formed with.

In addition, although not shown in the drawing, the four corners may be formed to extend / protrude in the longitudinal direction of the first and second lower mechanisms 41a and 41b.

Next, as shown in FIG. 11A, the lamp fixing mechanism 57 may have two legs. In this case, as shown in FIG. 11B, the upper lamp holder 56 may be fixed to be fixed inside the lamp fixing mechanism 57. Form.

Although not shown in the drawings, even when the legs of the lamp fixing mechanism 57 have two legs, the hooks under the legs may be directed outward or inward.

In addition, as shown in FIG. 12A, the lamp fixing mechanism 57 may be formed to have a total of six legs each having hooks at each corner and at the center of four sides. In this case, as shown in FIG. The lamp holder 56 is formed in the shape of a cube to enter the inside of the lamp fixing mechanism 57, or in the shape of a cube having six grooves so that each leg is caught at the center of each corner and four sides of the lamp fixing mechanism 57. You may.

In this case, the hook of the lower part of the leg may be directed to the outside or the inside.

Although not shown in the drawings, the lamp fixing mechanism 57 having a hook includes three, five, seven, and more portions except for the positions where the light emitting lamps 31 are mounted in addition to the two, four, and six legs. It can be configured to have a bridge.

In the above-described second embodiment of the present invention, since the upper lamp holder 56 and the lamp fixing mechanism 57 are configured to fasten the two light emitting lamps 31 in one unit, unlike the first embodiment, the second embodiment is fastened in one unit. A leg of the lamp fixing mechanism 57 may be formed in the region between the two light emitting lamps 31.

Next, the lamp fixing mechanism 57, the upper and lower lamp holders 56 and 55, the conductive layer 47b, the light emitting lamp 31 and the second lower mechanism 41b provided with hooks under the legs are provided. The combined form will be described.

As shown in FIG. 13A, the upper lamp holder 56 is fixed to the lower part of the lamp fixing mechanism 57, and the light emitting lamp 31 is fastened between the upper lamp holder 56 and the lower lamp holder 55. The conductive layer 47b is formed along the surface of the lower lamp holder 55, and the groove of the lamp fixing mechanism 57 is fastened to the second lower mechanism 41b around the lower lamp holder 55. Inner holes are formed.

At this time, the number or shape of the grooves or holes formed in the second lower mechanism 41b varies depending on the number of legs of the lamp fixing mechanism 57.

A groove or a hole is formed in the second lower mechanism 41b at a position corresponding to the leg of the lamp fixing mechanism 57.

In addition, a groove or a hole formed in the second lower mechanism 41b is used to fix the hook of the leg of the lamp fixing mechanism 57 to the lower surface of the second lower mechanism 41b as shown in FIGS. 13A and 13B. It may be formed through the second lower mechanism (41b), and as shown in Fig. 13c and 13d, a hook (hook) in the lower portion of the second lower mechanism (41b) to secure the inside of the second lower mechanism (41b) It can also be formed in a wider width at the bottom so that).

13A and 13C illustrate a form in which a hook is directed toward the outside of the lamp fixing mechanism 57, and FIGS. 13B and 13D illustrate a form in which the hook is directed into the lamp fixing mechanism 57. It is shown.

As described above, when the lamp fixing mechanism 57 is fixed to the first and second lower mechanisms 41a and 41b by applying a pressure with a hook through the groove, the lamp can be stably fixed from vibration or external impact.

Although not shown in the drawings, the upper and lower lamp holders 56 and 55 and the lamp fixing mechanism 57 may be configured to fix two light emitting lamps in one unit, respectively, and three or more light emitting lamps may be one. It may be configured to fix in units of.

In addition, when the upper lamp holder 56 is formed to receive the light emitting lamps 31 one by one, the lower lamp holder 55 may be configured to receive the two light emitting lamps 31 as a unit.

Although not shown in the drawings, the light emitting lamp 31 may be more stably fixed and supported by securing a support force between the first and second lower mechanisms 41a and 41b.

That is, a space defined by the first lower mechanism 41a and the second lower mechanism 41b and a lower support portion are formed on the side thereof, thereby integrally combining the lower support portion and the first and second lower mechanisms 41a and 41b. It can be configured as.

In addition, the inner surfaces of the first and second lower mechanisms 41a and 41b and the lower support part may be formed of a material having excellent light reflecting ability, for example, a synthetic resin having excellent light reflecting ability to perform a function of a reflecting plate, or It is also possible to coat a separate reflecting material on the inner surfaces of the first and second lower mechanisms and the lower support, so that the light emitted from the light emitting lamp can be intensively irradiated toward the liquid crystal panel to more effectively utilize the light.

The present invention is not limited to the above embodiments, and includes various forms that can be easily derived by those skilled in the art from the above embodiments.

On the other hand, such embodiments of the present invention can be used as a light source in the rear or front of various display devices, including a liquid crystal display device, as well as a light emitting device itself.

The backlight of the present invention as described above has the following effects.

First, since the light emitting lamp is fastened by applying pressure to each light emitting lamp by using a hook of the lamp fixing mechanism, the lamp can be stably fixed from vibration or external impact and the adhesion of the conductive layer can be improved.

Secondly, since the upper lamp holders are independently fixed to the lower lamp holders to fix the light emitting lamps, the adhesion between the light emitting lamps and the conductive layers may be improved, thereby improving the efficiency of the light emitting lamps.

Third, since a separate connector is not required for each light emitting lamp, the efficiency of work can be improved by simplifying the connection wiring with the driving circuit.

Fourth, it is easy to manufacture as a large area light source, and can actively respond as a backlight of a large area liquid crystal display device.

Claims (15)

A plurality of light emitting lamps arranged in a row; First and second lower mechanisms having a plurality of lamp holder fastening parts and disposed opposite the light emitting lamps; A plurality of lower lamp holders disposed in the lamp holder fastening part in a shape capable of accommodating the light emitting lamp; A plurality of upper lamp holders independently disposed at an upper portion corresponding to the lower lamp holder in a shape capable of accommodating the light emitting lamps; A conductive layer disposed in the lower lamp holder and the first and second lower mechanisms in a shape capable of accommodating the light emitting lamp; And a lamp fixing mechanism provided with a hook under the leg to fix the upper and lower lampholders and the light emitting lamp to the first and second lower mechanisms. The method of claim 1, And the upper and lower lamp holders and the lamp fixing mechanism correspond one-to-one to the light emitting lamps. The method of claim 1, And the upper and lower lamp holders and the lamp fixing mechanism are configured to fix at least two or more of the light emitting lamps as a unit. The method of claim 1, Any one of the upper lamp holder or the lower lamp holder is configured to fix the light emitting lamps one by one, the other is configured to fix the two or more of the light emitting lamps in a unit. The method of claim 1, And said lamp fixture has at least two legs. The method of claim 1, And a groove or a hole is formed in the first and second lower mechanisms at positions corresponding to the legs of the lamp fixing mechanism. The method of claim 1, The upper lamp holder is characterized in that the hexahedron shape. The method of claim 1, And the upper lamp holder is formed with a groove at a leg position of the lamp fixing mechanism. The method of claim 1, The hook of the lamp fixing mechanism is inward or outward. The method of claim 1, The upper and lower lamp holders are insulators, and are made of elastic material such as rubber, acrylic, PC (poly carbonate) or plastic, or a hard material. The method of claim 1, The conductive layer is in contact with one surface of the light emitting lamp, the back light is characterized in that it is arranged connected in the longitudinal direction of the first lower mechanism, the end is configured to come out of the fixture. The method of claim 1, The conductive layer is a back light, characterized in that made of a material that is electrically conductive, such as a metal plate or a conductive coating film. The method of claim 1, Diffusion sheet and diffusion plate for scattering the light emitted from the light emitting lamp so that the light source can be uniformly distributed on the display surface of the liquid crystal panel above the lamp fixing mechanism and the light emitting lamps. Back light, characterized in that the light scattering means is further arranged. The method of claim 1, And a reflector further disposed between the first and second lower mechanisms and a lower surface including the light emitting lamp. The method of claim 1, The light emitting lamp is an external electrode light emitting lamp having electrodes at both ends, or the light emitting lamp of the electrodeless.