JPH11134921A - Lighting system and liquid crystal display device equipped with this lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system and a liquid crystal display device equipped with this lighting system that facilitates the assemblage and the replacement of a lamp unit and holds and fixes the lamp unit securely. SOLUTION: This lighting system is composed by forming a lamp unit by integrating a lamp 1, a reflector 4, a lamp lead wire 7 and a rubber holder 9 and thereby allowing the lamp unit to be drawn from a side of a resin body 6, and holding the reflector 4 with a guide 6a of the resin body 6 and a lamp cover 5. A structure where the reflector 4 is held by a hook 6b of the resin body 6 is formed in the drawing direction of the lamp unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a lighting device used for a transmission type display device and a liquid crystal display device using the same.

[0002]

2. Description of the Related Art In recent years, liquid crystal display devices are often used in display devices for information devices such as laptop type and notebook type word processors or personal computers, taking advantage of features such as light weight, thinness, and low power consumption. It has become.

[0003] In recent years, with the improvement in brightness and colorization of liquid crystal display screens, liquid crystal display devices with built-in lighting devices have become the majority. This lighting device is roughly classified into a direct type using a uniforming means such as a lighting curtain and an edge light type using a light guide plate. With the reduction in weight, the edge light type has become mainstream.

FIG. 3 is a cross-sectional view of a main part showing a configuration of a conventional edge light type illumination device. 2. Description of the Related Art Conventionally, in an edge-light type illumination device, in order to effectively use light emitted from a lamp 1, a reflection sheet 3 is provided on the back surface of a light guide plate 2 that has been equalized, and a lamp disposed on a side surface of the light guide plate 2. 1 is wrapped in a sheet-like reflector 4, and the reflector 4 and the light guide plate 2 are adhered to each other with a double-sided adhesive tape (not shown) on the front side of the light guide plate 2, and the reflection sheet 3 on the back side of the light guide plate 2 Put reflector 4 on top,
It is configured to be fixed by the lamp cover 5 and is incorporated and held in the resin body 6. Further, the lamp lead wire 7 is fixed to the resin body 6 and the like as shown in FIG. In addition, as the reflector 4 for the lamp, a material having a high reflectance, such as a polyester film on which silver is vapor-deposited, is often used. 8 is the light guide plate 2
Is a diffusion sheet provided on the front surface side of FIG.

[0005] In recent years, liquid crystal display devices have been increasingly used for monitors, and a long lamp life has been required. In addition, a lamp unit that can be easily replaced even when the lamp life has expired has been required.

[0006]

In order to replace the lamp having the conventional structure, for example, after removing the lamp cover 5 fixed to the resin body 6 with screws or the like, the lamp lead wire 7 fixed to the resin body 6 or the like is replaced. Since the lamp 1 was removed and the sheet-shaped reflector 4 was removed to replace the lamp 1, the operation was difficult and required a lot of man-hours. In addition, even when the lamp 1, the reflector 4, and the lamp lead wire 7 are integrally pulled out from the resin body 6, the fixing in the vertical direction with respect to the lamp 1 is performed as follows.
The fixing by the resin body 6 and the lamp cover 5 was easy, but it was difficult to fix the lamp 1 in the lateral direction, that is, in the drawing direction, and there was a problem that the lamp 1 and the reflector 4 moved or came off due to vibration and drop impact. Was.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a method of pulling out a lamp and a reflector from the side of a resin body.
An object of the present invention is to provide a lighting device having a configuration that is difficult to be shifted or removed, and a liquid crystal display device including the lighting device.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, an illuminating device of the present invention and a liquid crystal display device provided with the illuminating device are provided with a hook of a resin body in a direction in which a lamp and a reflector are pulled out from the resin body. It is fixed by.

Therefore, according to the present invention, the lamp and the reflector are less likely to shift or come off in the pulling-out direction from the resin body even when the illumination device and the liquid crystal display device provided with the illumination device are subjected to vibration and drop impact. ,
A high-quality and highly reliable lighting device and a liquid crystal display device including the lighting device can be provided.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be realized by adopting the configuration described in each claim. That is, as described in claim 1, in a lighting device provided with a resin body holding and fixing a light guide plate, a lamp disposed on at least one side surface of the light guide plate, and a reflector surrounding the lamp. The lamp and the reflector can be pulled out of the resin body, and a hook for fixing the insertion direction of the reflector is provided in the resin body, so that the lamp and the reflector can be easily fixed within the resin body even if vibration or impact is applied. It does not move from the position or come off the resin body.

Further, if the lamp and the reflector are integrated as described in the second aspect and can be pulled out from the resin body, the lamp can be easily replaced.

Further, as described in claim 3, the liquid crystal display device provided with the lighting device according to claim 1 or 2 is such that the lamp can be easily replaced and repaired.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below in detail with reference to the drawings. The same components as those in the conventional example shown in FIG.

FIG. 1A is an exploded perspective view showing an embodiment of the lighting device of the present invention, FIG. 1B is a sectional view taken along the line AA in FIG. 1A, and FIG. It is BB sectional drawing in FIG.1 (a). In the figure, a dot pattern for light equalization is formed on the back surface of the light guide plate 2, and a reflection sheet 3 is arranged below the surface. A diffusion sheet 8 is disposed on the front surface side of the light guide plate 2 so as to cover up to the end of the light guide plate 2. The reflection sheet 3, the light guide plate 2, and the diffusion sheet 8 are held and fixed to the resin body 6 by the lamp cover 5. The lamp 1 is held by a rubber holder 9, and the rubber holder 9 is held and fixed by a reflector 4 to protect the lamp 1. The lamp 1, the rubber holder 9, the lamp lead wire 7, and the reflector 4 are integrated to enable the lamp unit to be drawn out from the side of the resin body 6. The material of the reflector 4 is not particularly limited, but a highly rigid material such as metal or resin is used. The reflector 4 is held by a lamp cover 5 and a guide 6a of a resin body 6 as shown in FIG. In the drawing direction of the reflector 4, an end 4a of the reflector 4 is fixed by a hook 6b of the resin body 6 as shown in FIG. The shape, size, length and the like of the hook 6b are not particularly limited, and it is sufficient that the hook 6b does not shift or come off even when vibration or drop impact is applied. As for the lamp unit, the hook 6b is
The lamp unit can be easily removed by bending in the C direction in (d) and pulling the lamp unit from the side.

FIG. 2 is a cross-sectional view of a main part of a liquid crystal display device in which the liquid crystal panel 10 is mounted on the lighting device of the present invention. The liquid crystal panel is held.

[0016]

As described above, the present invention provides a lighting device and a liquid crystal display device equipped with the lighting device. It is possible to provide a high-quality and highly reliable lighting device and a liquid crystal display device provided with the lighting device, which can prevent displacement and detachment of the drawing direction. In addition, because the lamp was easily replaced,
Replacement man-hours can be greatly reduced.

[Brief description of the drawings]

1A is an exploded perspective view showing a configuration of a lighting device according to an embodiment of the present invention. FIG. 1B is a cross-sectional view taken along line AA in FIG. d) Cross-sectional view of main parts of the resin body

FIG. 2 is a sectional view of a main part showing a configuration of a liquid crystal display device according to one embodiment of the present invention.

FIG. 3 is a sectional view of a main part showing a configuration of a conventional lighting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp 2 Light guide plate 3 Reflection sheet 4 Reflector 4a End part 5 Lamp cover 6 Resin body 6a Guide 6b Hook 7 Lamp lead wire 8 Diffusion sheet 9 Rubber holder 10 Liquid crystal panel 11 Metal frame

Claims (3)

[Claims] 1. A lighting device comprising a resin body holding and fixing a lamp disposed on at least one side surface of a light guide plate and a reflector surrounding the lamp, wherein the lamp and the reflector are drawn out of the resin body. A lighting device characterized in that a hook is provided in the resin body so as to be free and to fix an insertion direction of the reflector. 2. The lighting device according to claim 1, wherein the lamp and the reflector are integrated and can be pulled out of the resin body. 3. A liquid crystal display device comprising the lighting device according to claim 1.