JP3536018B2 - Image display device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an image display device represented by a liquid crystal display device or the like.

[0002]

2. Description of the Related Art An image display device for information processing such as a liquid crystal monitor and a video display device such as a liquid crystal television have an image display element and a connector electrically connected to the image display element. If the connector is left in an imperfectly mounted state, a high-pressure leak occurs due to a poor connection, which causes a problem such as a smoking accident.

A technique for preventing such a connection failure of the connector is disclosed in Japanese Utility Model Laid-Open No. 5-20278. FIG. 19 is a sectional view showing a high voltage connector disclosed in Japanese Utility Model Laid-Open No. 5-20278. The high-voltage connector shown in FIG. 19 includes a holder 7 into which the input / output lead wire 3 and the bush 4 are inserted, and a cap 6 fitted to the open end of the holder 7.

An opening 7b is formed on the peripheral wall of the holder 7, and the side portion of the cap 6 is elastically deformable and collides with the peripheral wall of the holder 7 at the time of fitting to generate a confirmation sound. A stopper having a confirmation sound generating projection 6b to be generated is provided, and the stopper 6a is fitted into the opening 7b of the holder 7.

[0005]

SUMMARY OF THE INVENTION In this conventional technique,
As a means for confirming the complete insertion of the high voltage connector, the collision sound of the elastically deformable projection is used, but for example, when the working environment is noisy and the confirmation sound is difficult to hear, it is impossible to confirm the mounting Incomplete insertion of the connector cannot be completely prevented.

An object of the present invention is to provide an image display device capable of preventing a smoking accident by eliminating incomplete mounting of a connector for electrical connection.

[0007]

According to the present invention, there is provided an image display device, a first connector electrically connected to the image display device, and a second connector attached to the first connector and electrically connected thereto.
A connector, a second housing to which the image display element, the first connector and the second connector are attached, and a first housing assembled to the second housing, the first connector being provided on an inner wall of the first housing. The image display device is characterized in that, when the mounting state of the first connector and the second connector is incomplete, a protruding portion that prevents the assembling of the first housing and the second housing is provided.

According to the invention, the inner wall of the second housing is provided with
When the mounting state of the first connector and the second connector is incomplete, a projecting portion that prevents the assembly of the first housing and the second housing is provided. Therefore, in the image display device according to the present invention, when the first and second connectors are completely attached, the second housing can be assembled to the first housing without any problem, and the first and second connectors can be assembled. Is incompletely mounted, the first casing and the second casing cannot be assembled.

Therefore, during the assembling work of the first and second casings, the incomplete mounting state of the first and second connectors can be transmitted to the worker by the assembling failure of the first and second casings. It is possible to prevent smoking accidents due to poor connection between the first and second connectors.

The mounting direction of the first and second connectors of the present invention is perpendicular to the assembling direction of the first and second casings, and the projecting portion is the assembling direction of the first and second casings. It is characterized in that it is erected on the inner wall of the first housing so as to be parallel to.

According to the present invention, the mounting directions of the first and second connectors are perpendicular to the assembling direction of the first and second casings, and the protruding portion of the first and second casings. Since it is erected on the inner wall of the first housing so as to be parallel to the assembling direction, when the mounting state of the first connector and the second connector is not perfect, the protruding portion rides on the first or second connector. As a result, it becomes impossible to assemble the first housing and the second housing, and the worker or the like can be informed of the incompletely mounted state of the first and second connectors.

Further, the present invention comprises a wiring limiting portion for dividing a plurality of cables connected to the first or second connector into two and limiting a wiring position, wherein the projecting portion includes the first casing and the first casing. When the two housings are assembled, they are arranged between the cables divided into two by the wiring restriction unit.

According to the invention, the plurality of cables connected to the first or second connector are divided into two by the wiring restricting portion, and the projecting portion has the first casing and the second casing. When assembled, it is placed between the cables that are divided into two by the wiring restriction part, so that the protruding part may come into contact with each cable, or the protruding part may pinch the cable and damage the cable. Can be prevented.

Further, the projecting portion of the present invention is characterized in that it has a corner portion rounded in an arc shape.

According to the present invention, since the projecting portion has a corner portion formed into a circular arc shape, it is possible to prevent the projecting portion from damaging the cable even if the projecting portion comes into contact with the cable. You can

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below by taking an image display device having a liquid crystal panel as an example.
FIG. 1 shows an image display device 10 according to an embodiment of the present invention.
2 is a perspective view seen from the front of FIG. 2, and FIG. 2 is a perspective view seen from the back. In FIG. 2, the first housing 16 is partially cut away to show the internal structure of the image display device 10. 3 and 4 are exploded perspective views of the image display device 10 and show main components of the image display device 10.

The image display device 10 includes a liquid crystal panel 20, which is an image display element, and eight screws 2 on the back surface of the liquid crystal panel 20.
6, a chassis 21 fixed by 6, two sets of high voltage cables 18 electrically connected to the liquid crystal panel 20, two first connectors 13 electrically connected to the liquid crystal panel 20 by the high voltage cable 18, and two screws 25. The inverter board 11 fixed to the rear surface of the surface of the chassis 21 to which the liquid crystal panel 20 is fixed, the two second connectors 12 mounted on the inverter board 11, and the interface fixed to the rear surface of the chassis 21 by the four screws 25. Substrate 24, first housing 16 and second housing 23 that are housed and assembled, and stand 2 that supports these
Have eight.

The chassis 21 plays a role of holding the inverter board 11, the interface board 24, the liquid crystal panel 20, and the like, and columnar bosses 19 are provided above and below the fixed inverter board 11. The two bosses 19 are erected in a direction perpendicular to the chassis 21, that is, in the Z-axis direction of FIG.

The two sets of high voltage cables 18 are connected to the liquid crystal panel 2.
Two high voltage cables 18 connected to the upper part of 0 and two high voltage cables 18 connected to the lower part of the liquid crystal panel 20.
Composed of.

The two first connectors 13 are male connectors, and the tips of the two high-voltage cables connected to the upper part of the liquid crystal panel 20 and the two high-voltage cables connected to the lower part of the liquid crystal panel 20. They are provided at the tips of 18, respectively. Each first connector 13 is not fixed to the chassis 21, and the arrangement position thereof is limited by the length of the high voltage cable 18.

The two second connectors 12 are female connectors and are mounted on the upper and lower parts of the inverter board 11, respectively.

The first housing 16 and the second housing 23 are assembled in a direction perpendicular to the chassis 21 and parallel to the Z-axis direction of FIG. 4, and are fixed by screws 27. Image display device 1
The second housing 23 arranged on the front surface of 0 has a frame shape and can expose the display screen of the liquid crystal panel 20.

The first device arranged on the back surface of the image display device 10.
Two protrusions 17 and two cylindrical ribs 22 are erected on the inner wall of the housing 16. The two protrusions 17 are
The two cylindrical ribs 22 provided on the upper and lower portions of the first housing 16 are provided at positions facing the boss 19 standing on the chassis 21. Protrusion 17 and rib 22
Are erected in the Z-axis direction of FIG. 4, which is perpendicular to the chassis 21. The stand 28 is fixed to the outer wall of the first housing 16.

FIG. 5 is a sectional view showing a completely mounted state of the first connector 13 and the second connector 12, and FIG. 6 is a sectional view.
It is sectional drawing which shows the incomplete mounting state of the 1st connector 13 and the 2nd connector 12. As shown in FIG. The first connector 13 has a first connection terminal 15 made of a conductor inside thereof, and the second connector 12 has a second connection terminal 1 made of a conductor inside thereof.
Have 4.

As shown in FIG. 5, the first connector 13 and the second connector 12 are parallel to the chassis 21 and are shown in FIG.
It is mounted in the axial direction, that is, in the direction perpendicular to the assembly direction of the first and second casings 16 and 23. The first connector 13
Completely inserted into the second connector 12 and the first connector 13
When the second connector 12 and the second connector 12 are completely attached, the first connection terminal 15 and the second connection terminal 14 are completely in contact with each other and electrically connected.

However, as shown in FIG. 6, when the first connector 13 is inserted only up to the intermediate portion of the second connector 12, the first connecting terminal 15 and the second connecting terminal 14 leave a minute gap. As a result, a high-pressure leak may occur between the first connection terminal 15 and the second connection terminal 14, which may cause a smoke accident.

FIG. 7 is a perspective view showing the inner wall of the first casing 16, and FIG. 8 is an enlarged perspective view showing the vicinity of the protrusion 17 provided on the upper portion of the first casing 16. 9 is the first
FIG. 4 is an enlarged perspective view showing the vicinity of a protrusion 17 provided on the lower portion of the housing 16. The two projecting portions 17 project in a rectangular shape and are integrally formed with the first housing 16. As shown in FIG. 8, an upper corner portion of the protrusion 17 provided in the upper portion is formed into a circular arc shape, and as shown in FIG. 9, the lower protrusion portion 17 is provided in the lower corner portion. Is formed into a circular arc shape. Therefore, even if the protrusion 17 and the high-voltage cable 18 come into contact with each other, the high-voltage cable 18 can be prevented from being damaged.

The ribs 22 provided slightly above the upper protrusions 17 and the ribs 22 provided slightly below the lower protrusions 17 have circular recesses formed on their upper surfaces.

FIG. 10 shows the first housing 16 and the stand 2.
8 is a perspective view showing the image display device 10 and FIG. 11 is an enlarged perspective view showing the vicinity of the upper first connector 13, and FIG. 12 is an enlarged view showing the vicinity of the lower first connector 13. FIG. In FIG. 10 to FIG. 12, the image display device 10 is arranged so that the inverter board 11 faces downward.
It is shown rotated 90 ° clockwise.

As shown in FIGS. 10 to 12, the chassis 2
The boss 19 provided on the upper part is disposed between the two high voltage cables 18 connected to the upper part of the liquid crystal panel 20,
The boss 19 provided on the lower portion of the chassis 21 is arranged between the two high voltage cables 18 connected to the lower portion of the liquid crystal panel 20. In this way, since each high-voltage cable 18 is sorted and separated by the boss 19, a distance (space) is generated between the cables 18.

FIG. 13 is a perspective view showing the image display device 10 with the stand 28 omitted, and FIG.
16 is an enlarged perspective view showing the vicinity of the connector 13 and FIG.
[Fig. 4] is an enlarged perspective view showing the vicinity of the lower first connector 13. 13 to 15, the first casing 16 is partially cut away to show the internal structure of the image display device 10, and the image display device 10 is rotated clockwise by 90 ° so that the inverter substrate 11 is located below. Shown rotated.

As shown in FIGS. 13 to 15, the boss 19 is used.
When the first housing 16 and the second housing 23 are completely assembled, is mounted in the recess formed on the upper surface of the rib 22.
The inverter board 1 except for the depth direction of the first housing 16, that is, the Z-axis direction in FIG. 13, is formed by the inlay of the boss 19 and the rib 22 that determines the position of the boss 19 in correspondence with the boss 19.
Positioning with respect to 1 in two directions of the X-axis direction and the Y-axis direction of FIG.

When the first connector 13 and the second connector 12 are completely mounted and the first housing 16 and the second housing 23 are assembled, the protruding portion 17 is provided with the cables 18 generated by the bosses 19. In the gap, a slight gap is arranged on the side surface of the first connector 13 on the side of each cable 18. Therefore, the protrusion 17 and the two high-voltage cables 18 connected to the first connector 13 come into contact with each other, or the protrusion 17
It is possible to prevent the high voltage cable 18 from being caught or damaged.

FIG. 16 is a perspective view showing the image display device 10 when the first connector 13 and the second connector 12 are not completely attached, and FIG. 17 is the upper first connector 13 in this case. FIG. 19 is an enlarged perspective view showing the vicinity, and FIG. 18 is an enlarged perspective view showing the vicinity of the lower first connector 13 in this case. 16 to 18, the image display device 10 is shown rotated 90 ° in the clockwise direction so that the inverter substrate 11 faces downward.

Worker first and second connectors 12, 1
If the first connector 13 is in an incompletely inserted state due to a connection mistake in 3, etc.,
Is the upper first connector 13 from the original mounting position.
Are shifted downwards.

In this state, the first housing 16 and the second housing 23
When assembling the and the first housing 16, the protrusion 17 provided inside the first housing 16 comes into contact with the first connector 13 and rides on the housing of the first connector 13, and the first housing 16 and The second housing 23 facing it cannot be assembled.

As described above, the image display device 10 has the first
When the second connectors 12 and 13 are in the completely mounted state, the first housing 16 and the second housing 23 can be fitted to each other and can be assembled without any problem, and the first and second connectors 12 and 13 cannot be assembled. In the completely mounted state, the protrusion 17 standing on the inner wall of the first housing 16 rides on the housing of the first connector 13, and as a result, the first housing 1
6 and the second housing 23 cannot be fitted to each other and cannot be assembled.

With such a structure, it is possible to detect an incompletely mounted state of the connector during assembly work and notify the worker of the defective mounting state, so that a smoke accident due to a defective connection of the connector can be prevented. be able to. Further, if the protruding portion is integrally formed as a part of the resin housing, for example, it is not necessary to add a part, and there is no cost disadvantage.

[0039]

As described above, according to the present invention, the first
A protrusion is provided on the inner wall of the housing to prevent the assembly of the first housing and the second housing when the first connector and the second connector are incompletely mounted. Therefore, when the first and second connectors are incompletely mounted, the second connector
Since the first housing cannot be assembled to the housing, the incomplete mounting state of the first and second connectors can be notified to the worker during the assembly work of the first and second housings. Therefore, it is possible to prevent smoking accidents due to poor connection between the first and second connectors, and improve the reliability of the product.

Further, according to the present invention, the first and second
The mounting direction of the connector is perpendicular to the assembling direction of the first and second casings, and the protrusion is provided on the inner wall of the first casing so as to be parallel to the assembling direction of the first and second casings. Since it is erected, when the first connector and the second connector are not completely mounted, the projecting portion rides on the first or second connector, and the first housing and the second housing are mounted. Can no longer be assembled.

Further, according to the invention, the protruding portion is the first
When the housing and the second housing are assembled, they are arranged between the cables divided into two by the wiring restriction portion, so that the protruding portion comes into contact with each cable or the protruding portion sandwiches the cable. Thus, it is possible to prevent the cable from being damaged.

Further, according to the present invention, since the projecting portion has a corner portion rounded in an arc shape, even if the projecting portion and the cable should come into contact with each other, the projecting portion can prevent the cable from being damaged. be able to.

[Brief description of drawings]

FIG. 1 is an image display device 10 according to an embodiment of the present invention.
It is the perspective view seen from the front.

FIG. 2 is an image display device 10 according to an embodiment of the present invention.
It is the perspective view seen from the back.

3 is an exploded perspective view of the image display device 10. FIG.

4 is an exploded perspective view of the image display device 10. FIG.

FIG. 5 is a sectional view showing a completely mounted state of the first connector 13 and the second connector 12.

FIG. 6 is a cross-sectional view showing an incompletely mounted state of the first connector 13 and the second connector 12.

FIG. 7 is a perspective view showing an inner wall of the first housing 16.

8 is an enlarged perspective view showing the vicinity of a protrusion 17 provided on the upper part of the first housing 16. FIG.

FIG. 9 is an enlarged perspective view showing the vicinity of a protrusion 17 provided on the lower portion of the first housing 16.

FIG. 10 is a perspective view showing the image display device 10 with the first housing 16 and the stand 28 omitted.

FIG. 11 is an enlarged perspective view showing the vicinity of the upper first connector 13.

FIG. 12 is an enlarged perspective view showing the vicinity of the lower first connector 13.

FIG. 13 is a perspective view showing the image display device 10 with the stand 28 omitted.

FIG. 14 is an enlarged perspective view showing the vicinity of the upper first connector 13.

FIG. 15 is an enlarged perspective view showing the vicinity of the lower first connector 13.

FIG. 16 is a perspective view showing the image display device 10 when the first connector 13 and the second connector 12 are not completely attached. FIG. 15 is a partially enlarged perspective view of FIG. 14.

FIG. 17 is an enlarged perspective view showing the vicinity of the upper first connector 13 when the first connector 13 and the second connector 12 are not completely attached.

FIG. 18 is an enlarged perspective view showing the vicinity of the lower first connector 13 when the first connector 13 and the second connector 12 are not completely attached.

FIG. 19 is a sectional view showing a high voltage connector disclosed in Japanese Utility Model Laid-Open No. 5-20278.

[Explanation of symbols]

10 Image display device 11 Inverter board 12 Second connector 13 1st connector 14 Second connection terminal 15 First connection terminal 16 First housing 17 Projection 18 high voltage cable 19 Boss 20 LCD panel 21 chassis 22 Cylindrical rib 23 Second housing 24 interface board 25, 26, 27 screws 28 stand 29 High pressure leak

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) G02F 1/1345 G02F 1/1333 G09F 9/00 H01R 13/64

Claims (4)

(57) [Claims] 1. An image display device, a first connector electrically connected to the image display device, a second connector attached to the first connector and electrically connected, an image display device, A second housing to which the first connector and the second connector are attached; and a first housing assembled to the second housing, and a mounting state of the first connector and the second connector on an inner wall of the first housing. The image display device is characterized in that a projection portion that prevents the assembling of the first housing and the second housing is provided when the above is incomplete. 2. The mounting direction of the first and second connectors is perpendicular to the assembly direction of the first and second housings, and the protrusion is parallel to the assembly direction of the first and second housings. The image display device according to claim 1, wherein the image display device is erected on the inner wall of the first housing so that 3. A wiring restricting portion that restricts a wiring position by dividing a plurality of cables connected to the first or second connector into two, wherein the protruding portion includes a first housing and a second housing. The image display device according to claim 1 or 2, wherein, when and are assembled, they are arranged between the cables divided into two by the wiring restriction portion. 4. The image display device according to claim 1, wherein the protruding portion has a corner portion rounded in an arc shape.