JP2011103185A - Image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device which protects sockets and plugs from water and dust. <P>SOLUTION: The image display device includes an image display panel and a casing 2 storing the display panel. An image display window for viewing the screen of the image display panel from the outside is provided on a front wall of the casing 2, while the socket 6 for fitting a plug 71 of a power cord 7 for supplying power to the image display panel is provided on a rear wall 22 of the casing 2. In this case, a storage unit 3 for storing the socket 6 is provided on the rear wall 22 of the casing 2. In the storage unit 3, a through-hole 30 for allowing the power cord 7 penetrating from the inside to the outside is formed and a sealing structure for preventing water and/or dust from entering through the through-hole 30 is provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image display device including an image display panel.

  This type of image display device includes a housing that accommodates an image display panel, and is used by being installed on the floor with the rear surface of the housing facing the indoor wall or attached to the indoor wall ( For example, see Patent Document 1). Many of such image display devices include a socket into which a plug of a power cord for supplying power to the image display panel is to be inserted. The socket is usually provided rearward on the back wall of the housing that houses the image display panel.

JP 2005-286987 A

  However, most of the conventional image display devices are designed on the assumption that they are installed indoors, and the image display device is not provided with a measure for protecting the image display panel from water and dust. It was. For this reason, when a conventional image display device is permanently installed outdoors, there is a risk that a socket or a plug may be exposed to water or dust, resulting in a short circuit or fire.

  In recent years, it has been desired to install an image display device having an image display panel outdoors. The reason is that the image display device has a small thickness. When the thickness dimension is small, the image display device can be installed in a narrow place.

  Therefore, it is conceivable to protect the socket and plug from water and dust by using a dedicated cord having a sealing structure as the power cord. However, since the dedicated code is expensive, the manufacturing cost of the image display device increases.

  Accordingly, an object of the present invention is to provide an image display device capable of protecting a socket and a plug from water and dust.

  An image display device according to the present invention includes an image display panel and a housing that accommodates the image display panel, and an image display that allows a screen of the image display panel to be visually recognized from the outside on the front wall of the housing. While a window is provided, a socket in which a power cord plug for supplying power to the image display panel is to be inserted is provided on the rear wall of the housing. Here, a housing portion for housing the socket is provided on the rear wall of the housing, and the housing portion has a through hole through which the power cord passes from the inside to the outside. A seal structure is provided to prevent water and / or dust from entering from the through hole.

  According to the image display device, even when the image display device is exposed to the outside air, it is difficult for water and dust to enter from the through hole. Therefore, the sockets and plugs in the housing are not easily exposed to water and dust.

  The image display device according to the present invention can protect the socket and the plug from water and dust.

FIG. 1 is a perspective view showing an image display apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view of the image display device as seen from the back side. FIG. 3 is an enlarged view of a recess provided in the image display device. FIG. 4 is a rear view of the image display device. FIG. 5 is a sectional view taken along line AA shown in FIG. FIG. 6 is a bottom view of the image display apparatus. FIG. 7 is an enlarged view of region B shown in FIG. FIG. 8 is a cross-sectional view illustrating a state in which the plug of the power cord is inserted into a socket provided in the image display device. FIG. 9 is a perspective view for explaining a seal structure of a housing portion provided in the image display device. FIG. 10 is a perspective view for explaining a seal structure of a housing portion provided in the image display device.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
As shown in FIG. 1, an image display device according to an embodiment of the present invention includes a liquid crystal display panel (1) and a casing (2) that houses the liquid crystal display panel (1). The front wall (21) of (2) is provided with an image display window (20) that allows the screen (10) of the liquid crystal display panel (1) to be visually recognized from the outside.

  As shown in FIG. 2, a recess (4) is formed in the back wall (22) of the housing (2), and the recess (4) has a substantially rectangular opening (40) having four sides. is doing. As shown in FIG. 3, a plurality of connectors (60) to (60) to which cables for receiving and / or transmitting video signals and audio signals are to be connected to the bottom wall (41) forming the recess (4). 60) is mounted facing backwards.

  Further, a plug (71) (see FIG. 8) of a power cord (7) for supplying power to the liquid crystal display panel (1) should be fitted into the upper wall (42) forming the recess (4). The socket (6) is attached downward. Specifically, a rectangular parallelepiped mounting base (421) for mounting the socket (6) is formed on the upper surface wall (42) forming the recess (4), and the socket (6) is shown in FIG. As shown in FIG. 3, the mounting base (421) is attached to the lower surface wall downward while penetrating the lower surface wall.

  As shown in FIGS. 4 and 5, the opening (40) of the recess (4) is closed by a lid (5) joined to the recess (4). Specifically, as shown in FIG. 3, the recess (4) has an edge (401) extending along the four sides of the opening (40) of the recess (4) and surrounding the opening (40). Have. On the other hand, the lid (5) has a substantially rectangular top plate (50) having four sides as shown in FIG. 4, and the edge of the top plate (50) is shown in FIG. Four side wall portions (51) to (51) extending along the four sides are erected substantially perpendicular to the top plate (50). By closing the opening (40) of the recess (4) with the lid (5), the edge (401) of the recess (4) is formed on the four side walls (51) to (51) of the lid (5). The front end surface is in surface contact, and in this state, the lid (5) is screwed to the edge (401) of the recess (4), whereby the lid (5) is joined to the recess (4). . FIG. 3 shows a plurality of screw holes (402) to (402) for screwing.

  Here, as shown in FIG. 3 and FIG. 5, the edge (401) of the recess (4) is the lower side (403) of the four sides of the opening (40) of the recess (4) (see also FIG. 4). ) Protrudes rearward from the rear wall (22) of the housing (2) in a region along the upper wall (), thereby forming a protrusion (43). On the other hand, as shown in FIG. 7, along the lower side (503) (see also FIG. 4 or FIG. 5) of the top plate (50) among the four side walls (51) to (51) of the lid (5). A fitting recess (511) to which the protruding portion (43) is to be fitted is formed in the side wall portion (51) that expands in accordance with the shape of the protruding portion (43). Therefore, when the recess (4) and the lid (5) are joined, the tip surface (431) of the protrusion (43) comes into surface contact with the bottom surface (512) of the fitting recess (511). .

  Thus, as shown in FIG. 5, a housing part (3) for housing the connector (60) and the socket (6) is formed from the recess (4) and the lid (5). Moreover, a cover body (5) and a protrusion part (43) will protrude back from the back wall (22) of a housing | casing (2) among accommodation parts (3).

  As shown in FIG. 7, of the joint surfaces between the recess (4) and the lid (5), the joint surface between the projecting portion (43) and the side wall portion (51), that is, the tip surface of the projecting portion (43) ( 431) and the bottom surface (512) of the fitting recess (511) are provided with a pair of grooves (31), (32) at a plurality of locations. Each of the pair of grooves (31) and (32) is opposed to each other in a state where the concave portion (4) and the lid (5) are joined, and the through hole (30) communicates from the inside of the housing portion (3) to the outside. Is formed. As shown in FIG. 8, the power cord (7) and the cable pass through the through hole (30) formed in this way.

  Thus, in the image display device, the power cord (7) and the cable are provided outside the area crossing the back wall (22) of the housing (2) in the bottom wall forming the housing (3). A through hole (30) to be penetrated is formed.

  As shown in FIG. 3, among the joint surfaces of the protrusion (43) and the side wall (51), the joint surface on the protrusion (43) side, that is, the tip surface (431) of the protrusion (43) A second groove (33) crossing the plurality of grooves (31) is recessed (see also FIG. 5). As shown in FIGS. 5 and 10, the first seal member 81 is fitted in the second groove 33. Similarly, a second groove (34) crossing the plurality of grooves (32) is formed in the joint surface on the side wall (51) side, that is, the bottom surface (512) of the fitting recess (511). (See FIG. 5). As shown in FIG. 5, the second groove (34) is different from the first seal member (81) fitted in the second groove (33) on the protrusion (43) side. One seal member (82) is fitted.

  These two first seal members (81) and (82) are in close contact with each other when the recess (4) and the lid (5) are joined. Accordingly, the through hole (30) formed by joining the recess (4) and the lid (5) is closed by the two first seal members (81) and (82) as shown in FIG. As a result, intrusion of water and dust from the through hole (30) is prevented by the first seal members (81) (82).

  As shown in FIG. 3, a third groove (35) surrounding the space inside the accommodating portion (3) is formed on the joint surface on the concave portion (4) side, that is, on the edge portion (401) of the concave portion (4). The second groove (33) is recessed and overlapped. As shown in FIG. 9, a ring-shaped second seal member (83) is fitted into the third groove (35).

  Specifically, the third groove (35) overlaps the four side wall portions (51) to (51) of the lid (5) when the recess (4) and the lid (5) are joined. In such a position, it is recessed along the four sides of the opening (40) of the recess (4). The third groove (35) has a width dimension along the upper side, the left side, and the right side of the four sides of the opening (40) of the recess (4), and the width dimension of the second groove (33). It is getting smaller. The second seal member (83) is a portion along the lower side (403) of the four sides of the opening (40) of the recess (4) when the recess (4) and the lid (5) are joined. Is in close contact with the first seal member (81), and the upper, left, and right sides of the four sides are in close contact with the side wall portions (51) to (51) of the lid (5). . Accordingly, the second seal member (83) prevents water and dust from entering between the joint surfaces of the recess (4) and the lid (5).

  In the image display device, the plug (71) of the power cord (7) can be fitted into the socket (6) by opening the lid (5). Here, the socket (6) is provided downward. Accordingly, the plug (71) inserted into the socket (6) protrudes downward from the socket (6) as shown in FIG. 8, and accordingly, the power cord (7) is directed downward from the socket (6). Will extend. Therefore, when the image display device is disposed with the back surface thereof facing the wall, the space on the back surface side can be reduced as compared with the image display device in which the plug protrudes rearward from the socket as in the prior art.

  After the plug (71) is inserted into the socket (6), the power cord (7) is fitted into the pair of grooves (31) and (32) and the lid (5) is closed to remove the socket (6). As shown in FIG. 8, the power cord (7) extending downward is pulled out downward from the housing (3) to the outside of the housing (2) through the through hole (30). Similarly, the cable connected to the connector (61) is drawn downward from the housing portion (3) to the outside of the housing (2) through the through hole (30). Therefore, when the image display device is disposed with the back surface facing the wall, the space on the back surface side can be small.

  Therefore, the image display device can be installed on the floor or the ground with the back face close to the wall, or can be attached to the wall with the back face close to the wall.

  Further, the power cord (7) and the cable are fitted into the pair of grooves (31) and (32) and the lid (5) is closed, so that the power cord (7) and the cable are connected as shown in FIG. The first seal members (81) and (82) are sandwiched without any gap. Therefore, even when the power cord (7) and the cable are passed through the through hole (30), the first seal members (81) and (82) prevent water and dust from entering the through hole (30). become.

  Therefore, according to the image display device, even when the image display device is exposed to the outside air, the socket (6), the plug (71), and the connector (61) in the housing portion (3) are not Hard to be exposed to dust. Thus, the housing part (3) formed by the recess (4) and the lid (5) has a sealing structure that prevents intrusion of water and dust from between the through hole (30) and the joint surface. It has become.

  Furthermore, in the image display device, the third groove (35) has a width dimension of a portion along the upper side, the left side, and the right side of the four sides of the opening (40) of the recess (4). It is smaller than the width dimension of the groove (33). Therefore, the waterproofness and dustproofness which the accommodating part (3) has are improved.

  In addition, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim. For example, the image display device may employ a configuration in which the third groove (35) is provided on the joint surface on the lid (5) side. Further, the image display device may employ a configuration in which the through hole (30) is provided only in one place.

  In the image display device, the through hole (30) is provided in the lower wall forming the housing portion (3), but the present invention is not limited to this. The through hole (30) may be provided on the upper surface wall, the left side wall, or the right side wall in addition to the inner surface wall forming the accommodating portion (3), specifically, the lower surface wall forming the accommodating portion (3). Good. However, in this case, the through hole (30) is formed outside the region of the inner wall that intersects the rear wall (22) of the housing (2). Thereby, according to the state which installs an image display apparatus, it becomes possible to pull out a power cord (7) and a cable from the accommodating part (3) to upper direction, left direction, or right direction other than the downward direction. Therefore, better wiring is possible depending on the installation location of the image display device.

  Further, the image display device may have a configuration without a seal structure. Also in this configuration, the socket (6) and the plug (71) fitted into the socket (6) are accommodated in the accommodating portion (3). Therefore, compared with the conventional image display device, the socket (6) and the plug (71) in the housing part (3) are not easily exposed to water and dust.

  Furthermore, the various configurations employed in the image display device are not limited to the image display device including the liquid crystal display panel (1), but include various image display panels such as a plasma display panel and an organic EL (Electro-Luminescence) display panel. It can be applied to the provided image display device.

(1) Liquid crystal display panel (image display panel)
(10) Screen
(2) Case
(20) Image display window
(21) Front wall
(22) Back wall
(3) Containment section
(30) Through hole
(31) (32) Groove
(33) (34) Second groove
(35) Third groove
(4) Concave
(40) Opening
(42) Top wall
(5) Lid
(6) Socket
(7) Power cord
(71) Plug
(81) (82) First seal member
(83) Second seal member

Claims (1)

An image display panel and a housing that houses the image display panel are provided, and an image display window that allows a screen of the image display panel to be visually recognized from the outside is provided on the front wall of the housing. In the image display device provided with a socket into which a plug of a power cord for supplying power to the image display panel is to be inserted, on the back wall of
A housing portion for housing the socket is provided on the rear wall of the housing. The housing portion has a through-hole through which the power cord passes from the inside to the outside. An image display device provided with a seal structure for preventing water and / or dust from entering.

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