JP2006064795A - Liquid crystal display apparatus and thin display apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to hold a front cabinet in a standing attitude without needing an expensive and dedicated tool at checking and repair, in a thin display apparatus. <P>SOLUTION: A rear cabinet 4 is removed from the front cabinet 3 and right and left end parts of the front cabinet 3 are inserted in second recessed parts 12 provided at either one of opposite angles of the rear cabinet 4. Thereby, the front cabinet 3 can be held in the standing attitude and checking and repair can be made easy. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thin display device such as a liquid crystal display device.

  In recent years, thin display devices such as liquid crystal display devices have been put into practical use. The panel main body of such a thin display device usually has an exterior formed by a front cabinet on the front side and a rear cabinet on the rear side. Main components mounted inside the panel main body such as a liquid crystal display panel are mounted on the front cabinet, and a stand for supporting the panel main body is coupled to the rear cabinet. A circuit board on which a drive circuit for driving the liquid crystal display panel, a tuner for receiving broadcast signals, a control circuit for controlling each part, and the like are mounted on the back side of the liquid crystal display panel. Therefore, when inspecting or repairing a thin display device, particularly a circuit board, it is necessary to separate the front cabinet and the rear cabinet and expose the circuit board on the front cabinet side.

  However, when the front cabinet with the rear cabinet removed is placed on a work desk or the like with the display surface of the liquid crystal display panel facing downward, the liquid crystal display panel may be damaged. Therefore, when the circuit board is inspected or repaired, it is necessary to hold the front cabinet in a standing posture by some means, for example, a dedicated jig. However, such dedicated jigs are not versatile and are not mass-produced, resulting in increased manufacturing costs, resulting in increased costs for inspection and repair of thin display devices. Yes.

Patent Document 1 discloses a plasma display device that can hold a second circuit board in an upright position with respect to a first circuit board. Patent Document 2 discloses a liquid crystal display device that prevents damage to a caulking claw of a metal outer case. However, even if the technical idea shown in any patent document is applied, the above problem cannot be solved.
JP 2002-353660 A JP 2001-235731 A

  The present invention has been made to solve the above-described problems, and provides a liquid crystal display device and a thin display device that can hold a front cabinet in an upright position without requiring an expensive dedicated jig. The purpose is to do.

  In order to achieve the above object, a first aspect of the present invention provides a liquid crystal display panel for displaying an image, a drive circuit for driving the liquid crystal display panel, a tuner for receiving a broadcast signal, and for controlling each unit. A circuit board on which a control circuit is mounted, and a front cabinet and a rear cabinet that cover the liquid crystal display panel and the circuit board from the front side and the rear side to form an outer case. The liquid crystal display panel and the circuit board are mounted on the front cabinet. In the liquid crystal display device, the circuit board is provided on the back side of the liquid crystal display panel so as to be opposed to the liquid crystal display panel at a substantially central portion avoiding both left and right ends, and the rear cabinet is provided on the back side of the liquid crystal display panel The collar part which is provided in the position which opposes the both right-and-left both ends of this, and this liquid crystal display panel and a front cabinet are couple | bonded Corresponding to the vicinity of one of the diagonal corners of the rear cabinet at the position facing the circuit board so that it does not interfere with the circuit board and retracted backward from the collar section And a pair of second recesses retracted rearward from the collar, and the side and bottom surfaces of the second recesses are covered with non-woven fabric, and the front and rear cabinets are disassembled. When this is done, the end of the front cabinet is inserted into the second recess so that the front cabinet can be held in an upright position.

  According to a second aspect of the present invention, a display panel for displaying an image, a circuit board on which a drive circuit for driving the display panel is mounted, and an outer case is formed by covering the display panel and the circuit board from the front side and the rear side. In the thin display device including the front cabinet and the rear cabinet, the rear cabinet is disposed at a position facing the circuit board so as not to interfere with the circuit board. In the vicinity of one of the diagonals of the rear cabinet, there is a second recess that is retracted toward the rear, and when the front cabinet and rear cabinet are disassembled, a display panel or circuit board is inserted into the second recess Thus, both can be held in a standing posture.

  According to the first aspect of the present invention, when the front cabinet and the rear cabinet are disassembled, the end of the front cabinet can be inserted into the second recess of the rear cabinet and the front cabinet can be held in an upright position. When the inspection and repair are performed, an expensive dedicated jig that has been conventionally required is not required, and the cost required for the inspection and repair of the liquid crystal display device can be suppressed. In addition, since the second recess is provided at either diagonal of the rear cabinet, the front cabinet can be held at both left and right ends, and the posture of the front cabinet can be stabilized. Moreover, since the collar part for a coupling | bonding with a front cabinet is formed in the right-and-left both ends of a rear cabinet, both coupling | bonding can be made strong. Furthermore, since the side surface and the bottom surface of the second recess are covered with the nonwoven fabric, there is no possibility that the end portion of the front cabinet is damaged when the front cabinet is inserted.

  According to the invention of claim 2, when the front cabinet and the rear cabinet are disassembled, the end of the front cabinet can be inserted into the second recess of the rear cabinet and the front cabinet can be held in an upright position. When the inspection and repair are performed, an expensive dedicated jig that is conventionally required is not required, and the cost required for the inspection and repair of the thin display device can be suppressed. Moreover, since the 2nd recessed part is provided in the diagonal of either of the rear cabinets, a front cabinet can be hold | maintained at the right-and-left both ends, and the attitude | position can be stabilized.

  A thin display device according to the best mode for carrying out the present invention will be described with reference to the drawings. 1 and 2 show a liquid crystal display device which is an example of a thin display device. The liquid crystal display device 1 supports a liquid crystal display panel 2 that displays an image, a front cabinet 3 and a rear cabinet 4 that cover the liquid crystal display panel 2 from the front side and the rear side to form an exterior case, and the rear cabinet 4. The stand member 5 is provided. A circuit board 6 is mounted on the back side of the liquid crystal display panel 2 (see FIGS. 3 and 5). The circuit board 6 is mounted with a drive circuit for driving the liquid crystal display panel 2, a tuner for receiving a broadcast signal, and a control circuit for controlling each unit.

  FIG. 3 shows the back of the front cabinet 3. The liquid crystal display panel 2 is mounted on the back side of the front cabinet 3. The circuit board 6 is provided on the back side of the liquid crystal display panel 2 so as to be opposed to the liquid crystal display panel 2 at a substantially central portion avoiding both left and right ends. The circuit board 6 is mounted with various electronic components for constituting the above-described drive circuit, tuner, and control circuit mainly on the back side, but the illustration thereof is omitted.

  FIG. 4 shows the rear cabinet 4. The rear cabinet 4 is provided at a position facing the left and right end portions on the back side of the liquid crystal display panel 2, and at a position facing the flange 10 where the liquid crystal display panel 2 and the front cabinet 3 are coupled, and the circuit board 6. In order not to interfere with the circuit board 6, the first recess 11 is retracted backward from the flange 10. Moreover, the collar part 10 has a pair of 2nd recessed part 12 evacuated back in the vicinity of the diagonal of the rear cabinet 4 toward back. The second recess 12 has a shape corresponding to the left and right end portions of the front cabinet 3, and the side and bottom surfaces of the second recess 12 are damaged when the front cabinet 3 is inserted as will be described later. It is covered with non-woven fabric so that there is no.

  FIG. 5 shows the liquid crystal display device 1 when the circuit board 6 and the like are being inspected and repaired. Inspection and repair of the circuit board 6 are performed in a state where the front cabinet 3 and the rear cabinet 4 are disassembled and the circuit board 6 is exposed. In the present liquid crystal display device 1, when the front cabinet 3 and the rear cabinet 4 are disassembled, the front cabinet 3 can be made independent without using an expensive dedicated jig that has been conventionally required. The self-standing of the front cabinet 3 is realized by inserting the end of the front cabinet 3 into the second recess 12 of the removed rear cabinet 4 and holding the front cabinet 3 in an upright posture. At this time, by setting the width dimension of the second recess 12 to be slightly larger than the thickness dimension of the front cabinet 3, it is possible to hold the front cabinet 3 in a slightly inclined state toward the operator's face. , Can improve the work efficiency of inspection and repair.

  As described above, according to the liquid crystal display device 1 of the present embodiment, when the front cabinet 3 and the rear cabinet 4 are disassembled, the end of the front cabinet 3 is inserted into the second recess 12 of the rear cabinet 4. Since the front cabinet 3 can be held in an upright position, when the circuit board 6 is inspected or repaired, an expensive dedicated jig that has been conventionally required is not required, and the cost required for the inspection and repair of the liquid crystal display device 1 is suppressed. can do. Moreover, since the 2nd recessed part 12 is provided in either diagonal of the rear cabinet 4, the front cabinet 3 can be hold | maintained at the both right and left ends, and the attitude | position of the front cabinet 3 can be stabilized. Moreover, since the collar part 10 for the coupling | bonding with the front cabinet 3 is formed in the right-and-left both ends of the rear cabinet 4, both coupling | bonding can be made strong. Furthermore, since the side surface and the bottom surface of the second recess 12 are covered with the nonwoven fabric, there is no possibility that the left and right end portions of the front cabinet 3 are damaged when the front cabinet 3 is inserted.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made. For example, the present invention can be widely applied to thin display devices other than the liquid crystal display device 1, such as a plasma display device. In addition, a guide for guiding the front cabinet 3 when the front cabinet 3 is inserted into the periphery of the second recess 12 or the inner surface of the first recess 11 and corresponding to the inserted front cabinet 3. A part may be formed. Further, an engaging portion corresponding to the guide portion may be formed on the back side of the front cabinet 3.

1 is a front view of a liquid crystal display device according to an embodiment of the present invention. The side view of the apparatus. The rear view of a front cabinet in the state where the rear cabinet was removed. The perspective view of the rear cabinet removed. The perspective view which shows the state which made the front cabinet self-supporting using a rear cabinet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2 Liquid crystal display panel 3 Front cabinet 4 Rear cabinet 6 Circuit board 10 ridge part 11 1st recessed part 12 2nd recessed part

Claims (2)

A liquid crystal display panel for displaying images;
A circuit board on which a drive circuit for driving the liquid crystal display panel, a tuner for receiving broadcast signals, and a control circuit for controlling each unit are mounted;
A front cabinet and a rear cabinet that cover the liquid crystal display panel and the circuit board from the front side and the rear side to form an outer case,
In the liquid crystal display device in which the liquid crystal display panel and the circuit board are mounted on the front cabinet,
The circuit board is provided on the back side of the liquid crystal display panel so as to be opposed to the liquid crystal display panel at a substantially central portion avoiding both right and left ends,
The rear cabinet is
Provided at positions facing left and right end portions on the back side of the liquid crystal display panel, and a collar portion to which the liquid crystal display panel and the front cabinet are coupled;
A first recess recessed backward from the flange so as not to interfere with the circuit board at a position facing the circuit board;
A pair of second recesses retracted rearward from the collar part at a position corresponding to the vicinity of any diagonal of the rear cabinet in the collar part;
Side and bottom surfaces of the second recess are covered with a nonwoven fabric,
When the front cabinet and the rear cabinet are disassembled, an end portion of the front cabinet is inserted into the second recess so that the front cabinet can be held in an upright posture. A display panel for displaying images,
A circuit board on which a drive circuit for driving the display panel is mounted;
In a thin display device comprising a front cabinet and a rear cabinet that cover the display panel and the circuit board from the front side and the rear side to form an outer case,
The rear cabinet is
A first recess recessed backward so as not to interfere with the circuit board at a position facing the circuit board;
In the vicinity of any diagonal of the rear cabinet, there is a second recess that is retracted backward,
A thin display device characterized in that when the front cabinet and the rear cabinet are disassembled, the display panel or the circuit board is inserted into the second recess so that both can be held in an upright posture.

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