JP2001066589A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the lamps illuminating the liquid crystal panel from coming into contact and from interfering with each other by ensuring positioning of the lamps and to ensure mounting of the lamp holder by improving its mounting structure. SOLUTION: The display device is provided with a lamp holder 3, which holds a lamp 5 illuminating the liquid crystal panel 2, and which is freely attachable and detachable to the device main body 1. The lamp holder 3 is provided with a lamp reflector 12 reflecting the light from the lamp 5 and lamp holding rubbers 4 supporting the lamp 5 on the lamp reflector 12. The lamp holding rubber 4 is provided with a protrusion 4a. Recessed parts 12a are arranged on the lamp reflector 12 positioned opposite to the protrusions 4a and the reflector is fixed by joining the protrusions 4a and the recessed parts 12a together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to a liquid crystal display device having an improved lamp holder structure.

[0002]

2. Description of the Related Art As a general liquid crystal display device, there is one having a structure shown in a perspective view of FIG. 5 and a sectional view of FIG. Referring to FIG. 5, this liquid crystal display device is roughly divided into a liquid crystal display device main body 1 and a replaceable lamp holder 3. In FIG. 5, the lamp holder 3 is a liquid crystal panel 2
, A lamp holding rubber 4 for holding the lamp 5, a lamp reflector 12 for reflecting light from the lamp 5, and a lamp socket 6 for supplying power to the lamp 5 via a high-voltage cable 7. The lamp 5 is held by the lamp holding rubber 4 inside the lamp reflector 12.

The main body 1 of the liquid crystal display device includes a liquid crystal panel 2 for displaying images on a screen, a backlight 9 when light is applied from the back of the liquid crystal panel 2, a shield chassis 8 serving as these cases, and a display signal. 1 is provided with a signal board 10 provided with an electric circuit for controlling the power supply, and an inverter 11 formed of a circuit for supplying a power supply voltage.

[0004]

However, in the structure of this conventional liquid crystal display device, when it receives vibration or impact, the vibration or impact is transmitted from the lamp holder 3 to the lamp holding rubber 4, and the lamp holding rubber 4 4 may shift or move. If the lamp holding rubber 4 shifts in the lamp holder 3, the position of the lamp 5 to be held at the same time shifts, and there is a problem that the original characteristics cannot be obtained. This is because the lamp holding rubber 4 for holding the lamp 5 is not securely fixed in the lamp holder 3.

Further, when two or more lamps 5 are held in the lamp holder 3 by the lamp holding rubber 4, there is a problem that the lamps 3 are mounted crosswise. This is because, in the process of assembling the lamp holding rubber 4 with the lamp 5 and the lamp holder 3, the lamp holding rubber 4 is designed to be able to be attached even in an incorrect position and direction. The reason is that the design is not made in consideration of holding the lamp 5.

Further, in the case of the lamp holder 3 having different characteristics between the upper side and the lower side, there is a problem that the upper (lower) lamp holder 3 is erroneously inserted into the lower (upper) side. This is because the lamp holder 3 has no distinction and can be inserted either up or down.

An object of the present invention is to provide a liquid crystal display device which solves these problems, assures the mounting of the lamp holder, and has an improved mounting structure.

[0008]

SUMMARY OF THE INVENTION The present invention provides a liquid crystal display device having a lamp holder for illuminating a liquid crystal panel and having a lamp holder detachable from a device main body. A lamp reflector that reflects the light of the above, and a lamp holding rubber that supports the lamp on the lamp reflector, a projection is provided on the lamp holding rubber, and a recess is provided on the lamp reflector at a position facing the projection. The projections and the depressions are fitted together and fixed.

Another structure of the present invention is a liquid crystal display device having a lamp holder for illuminating a liquid crystal panel and having a detachable lamp holder attached to the apparatus main body. A projection is provided along the insertion direction, and a groove along the insertion direction is provided in the lamp holder insertion opening of the apparatus main body so as to face the projection of the lamp holder.

[0010]

FIG. 1 is a perspective view of a lamp holder and an exploded perspective view for explaining an embodiment of the present invention. The present embodiment has a basic structure similar to that of FIGS. 5 and 6, and includes a liquid crystal display device main body 1 and a replaceable lamp holder 3. This lamp holder 3 includes a lamp 5, a lamp holding rubber 4, a lamp reflector 1 as in FIG.
2, a lamp socket 6 and a high-voltage cable 7.
A recess 12a is provided for fitting the projection 4a. The liquid crystal display device main body 1 includes a liquid crystal panel 2, a backlight 9, a shield chassis 8, a signal board 10, and an inverter 11.

Referring to FIG. 3, a projection 4a is provided on a lamp holding rubber 4 for fixing a lamp 5 in a lamp holder 3, and is fitted into a recess 12a of an inner portion which comes into contact with an inner surface of a lamp reflector 12, thereby holding the lamp. Rubber 4
And the lamp reflector 12 are fixed.

The structure of the projections 4a of the lamp holding rubber 4 and the recesses 12a of the lamp reflector 12 allows the lamp holding rubber 4 which is easily displaced to be securely fixed to the lamp reflector 12, so that the lamp holding rubber 4 is located at an incorrect position during assembly. The lamp holding rubber 4 can be prevented from being displaced by vibration or impact during transportation. Also, when two or more lamps are held, it is possible to prevent crossing between the lamps and to prevent damage or destruction.

In a conventional liquid crystal display device, when subjected to vibration, impact, or the like, the lamp holding rubber shifts and moves from the lamp holder 3 to the lamp holding rubber 4, but in the present embodiment, the structure shown in FIG. As described above, since the projections 4a of the lamp holding rubber 4 are fitted into and fixed to the depressions 12a of the lamp reflector 12, displacement and movement of the lamp holding rubber 4 can be prevented.

In the assembling process, the protrusion 4a of the lamp holding rubber 4 and the recess 12a of the lamp reflector 12 are used.
Since the lamp holding rubber 4 is fitted in the wrong position, troubles of mounting the lamp holding rubber 4 at an incorrect position can be prevented.

FIG. 2 is a perspective view of a lamp holder for explaining a second embodiment of the present invention and an exploded perspective view thereof. This embodiment shows a case where a two-part lamp 5 is used.
As shown in FIG. 2, when two or more lamps are held by the same lamp holding rubber 4, the lamps 5 may cross each other due to vibration or impact, or the mounting direction of the lamp holding rubber 4 may be incorrect during the assembly process. 5 can be prevented from crossing each other, and breakage or destruction of the lamp can be prevented.

FIG. 3 is an exploded perspective view when a lamp holder 3 according to a third embodiment of the present invention is inserted and removed. Referring to FIG. 3, a groove 14 for inserting the lamp holder 3 in the main body 1 (shield chassis 8) of the liquid crystal display device main body (shield chassis 8) is provided in the lower part of the lamp reflector 12. 12b is provided. As a result, the projection 12b of the lamp reflector 12 is
, The lamp holder 3 cannot be inserted into the main body 1 of the liquid crystal display device.

FIG. 4 is a perspective view of a fourth embodiment of the present invention when a lamp holder 3 having a different insertion direction is inserted and removed. Here, the liquid crystal display device has two upper and lower lamp holders 12, and the upper and lower lamp holders 1 are distinguished.
2 is inserted, as shown in FIG.
By providing the groove 14 and the protrusion 12b of the lamp reflector 12, the lamp holder 12 cannot be inserted unless the protrusion 12b passes through the groove 14, so that erroneous insertion of the lamp holder 12 that can be distinguished vertically can be prevented.

[0018]

As described above, according to the structure of the present invention, vibration or impact can be achieved by aligning the projections of the lamp holding rubber with the depressions of the lamp reflector or the projections of the lamp holder with the grooves of the chassis. This has the effect that displacement and movement of the lamp (holding rubber) can be prevented. This is because the recesses are provided in the projections of the holding rubber and the mounting portions thereof, so that the projections and the recesses securely fix the lamp holding rubber to the lamp holder.

When the holding rubber for holding two or more lamps is attached to the lamp holder, the holding rubber is assembled so that the projection of the holding rubber is aligned with the recessed portion in the lamp holder, so that there are two or more lamps in the lamp holder. Even so, it is possible to prevent the lamps from crossing each other and being damaged.

Further, when the lamp holder is inserted into the apparatus, a groove is provided in the passage of the lamp holder, and the lamp holder cannot be inserted unless the projection on the lamp holder passes through the groove, thereby preventing erroneous insertion of the lamp. There is also an effect that can be done.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a lamp holder according to a first embodiment of the present invention and an exploded perspective view thereof.

FIG. 2 is a perspective view showing a configuration of a lamp holder according to a second embodiment of the present invention, and an exploded perspective view thereof.

FIG. 3 is a perspective view when a lamp holder according to a third embodiment of the present invention is inserted and removed.

FIG. 4 is a perspective view when a lamp holder according to a fourth embodiment of the present invention is inserted and removed.

FIG. 5 is a schematic perspective view showing a structure of a general liquid crystal display device and a lamp holder portion thereof.

6 is a cross-sectional view taken along the line AA of the liquid crystal display device of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2 Liquid crystal panel 3 Lamp holder 4 Lamp holding rubber 4a Lamp holding rubber projection 5 Lamp 6 Lamp socket 7 High voltage cable 8 Shield chassis 9 Backlight 10 Signal board 11 Inverter 12 Lamp reflector 12a Lamp reflector recess 12b Lamp reflector Projection 14 groove

Claims (7)

[Claims] 1. A liquid crystal display device having a lamp holder for illuminating a liquid crystal panel and having a lamp holder detachable from a device main body, wherein the lamp holder includes a lamp reflector for reflecting light from the lamp, and a lamp reflector. The lamp reflector has a lamp holding rubber for supporting the lamp, the lamp holding rubber has a projection, and the lamp reflector has a recess at a position facing the projection, and the projection and the recess are fitted and fixed. A liquid crystal display device characterized by being performed. 2. The liquid crystal display device according to claim 1, wherein a plurality of projections of the lamp holding rubber and a plurality of depressions of the lamp reflector are provided side by side in the same direction. 3. When a plurality of lamps are incorporated in the same lamp holder, each lamp is positioned by a projection of a lamp holding rubber and a recess of a lamp reflector to prevent contact and interference between the lamps. Or the liquid crystal display device according to 2. 4. In a liquid crystal display device having a lamp holder for illuminating a liquid crystal panel and having a lamp holder detachable from a device main body, when the lamp holder is inserted, a projection is formed along an insertion direction of the lamp holder. Is established,
A liquid crystal display device, characterized in that a groove along the insertion direction is provided in a lamp holder insertion opening of the apparatus main body so as to face the projection of the lamp holder. 5. The liquid crystal display device according to claim 4, wherein a plurality of grooves along the insertion direction are arranged in the lamp holder insertion opening of the device main body. 6. The liquid crystal display device according to claim 4, wherein the lamp holder in the liquid crystal display device according to claim 1 is provided with a projection of the lamp holder at a position corresponding to a recess inside the lamp reflector. 7. When a vertically distinctive lamp holder is inserted, the protrusion of the lamp holder and the groove along the insertion direction of the apparatus main body prevent incorrect insertion of the upper or lower lamp holder. A liquid crystal display device according to claim 4 or claim 5.