JP2015075650A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of effectively preventing or suppressing water, etc., from infiltrating into a space in which a display screen is disposed.SOLUTION: A display device 1 comprises: a display unit 2 having a display screen 2A; a panel member 4 forming a frame shape enclosing the display unit 2 and provided, along the inner circumference of the frame shape, with a groove-shaped fitting groove 4D opening on an opposite side to the display screen 2A; and a cover member 6 attached to the panel member 4 as its edge 6E is fitted into and contacted with the fitting groove 4D. Compared with a conventional structure in which the panel member 4 and the cover member 6 are assembled while being contacted face to face with each other, a gap is hardly created between the panel member 4 and the cover member 6 and the airtightness of a space S2 formed between the panel member 4 and a flat plate part 6A of the cover member 6 can be increased. As a result, infiltration of water, etc., into a space in which the display screen 2A is disposed can be effectively prevented or suppressed.

Description

  The present invention relates to a display device.

  Conventionally, a display device such as a fish finder attached to a ship or the like is known. This type of display device usually includes a display unit having a display screen, a panel member arranged in a form surrounding the display unit, and a cover member arranged on the opposite side of the panel member, and these are mutually connected. The assembled structure is used. In this type of display device, a display screen is arranged in a space formed between the panel member and the cover member, and an assembly portion of the panel member and the cover member is provided to prevent water or the like from entering the space. In some cases, a waterproof member such as a packing made of a resin material is disposed on the inside. A display device provided with such a waterproof member is disclosed in Patent Document 1, for example.

Japanese Patent No. 4871235

  However, since the display device disclosed in Patent Document 1 is assembled in a state in which the panel member and the cover member are both in surface contact with each other, both of them are caused by vibration of the display device accompanying a shake of a ship or the like. There was a possibility that a minute gap was generated between the two. For this reason, the airtightness of the space formed between the panel member and the cover member cannot be sufficiently ensured, and water or the like may enter the space where the display screen is arranged.

  The technology disclosed in the present specification has been created in view of the above-described problems, and can effectively prevent or suppress water or the like from entering the space where the display screen is arranged. An object is to provide a display device.

  The technology disclosed in this specification includes a display unit having a display screen, a frame shape surrounding the display unit, and a groove-like fitting groove that opens to the opposite side of the display screen along the inner periphery thereof And a cover member attached to the panel member by engaging and fitting the end edge of the panel member with the fitting groove.

  In the display device described above, the display screen of the display unit is arranged in a space formed between the panel member and the cover member by being assembled. At this time, since the edges of the cover member are fitted and abutted in the fitting groove of the panel member, both are assembled, so that both are in surface contact with each other at the assembly portion of the panel member and the cover member. The cover member is less likely to be detached from the panel member as compared with the assembled structure. For this reason, even when the display device vibrates, a gap is generated between the panel member and the cover member as compared with the conventional configuration in which the panel member and the cover member are assembled in a state where the panel member and the cover member are in surface contact with each other. It becomes difficult, and the airtightness of the space formed between the panel member and the cover member can be improved. As a result, water or the like can effectively be prevented or suppressed from entering the space where the display screen is arranged.

  In the above display device, an adhesive may be embedded in a gap exposed to the outside between the fitting groove and the end edge.

  According to this configuration, the panel member and the cover member are fixed to each other through the adhesive, and the gap exposed to the outside between the fitting groove of the panel member and the edge of the cover member is sealed with the adhesive. . For this reason, the airtightness of the space formed between the panel member and the cover member can be further increased, and water or the like can be more effectively prevented or suppressed from entering the space where the display screen is arranged. Can do.

  According to the technology disclosed in this specification, it is possible to provide a display device that can effectively prevent or suppress water or the like from entering a space in which a display screen is arranged.

A perspective view of the display device viewed from the front side The perspective view which looked at the display device from the back side Side view of display device Side sectional view of display device The principal part sectional drawing which expanded the principal part in FIG. Cross-sectional perspective view enlarging the main part of the display device

  Embodiments will be described with reference to the drawings. In this embodiment, the display apparatus 1 used for the fish finder attached to a ship etc. is illustrated. As shown in FIG. 1 and FIG. 2, the display device 1 is disposed on the front (left side in FIG. 1) and arranged to be exposed, the panel member 4 surrounding the display 2, and the rear. And a cover member 6, which are assembled to each other.

  In addition, a part of each drawing shows an X axis, a Y axis, and a Z axis that are orthogonal to each other, and each axis direction is drawn to be a common direction in each drawing. Of these, the X-axis direction matches the left direction (left side), the Y-axis direction matches the upward direction, and the Z-axis direction matches the rear direction (back direction).

(Configuration of display device)
The display unit 2 has a substantially square shape when viewed from the front, and includes a display screen 2A, a protection panel 2B, and an operation unit 2C. As shown in FIG. 4, the display screen 2 </ b> A includes a liquid crystal panel 2 </ b> A <b> 1 and a backlight 2 </ b> A <b> 2 that includes a printed circuit board and supplies light from behind the liquid crystal panel 2 </ b> A <b> 1. The protection panel 2B is a member having waterproofness and transparency, and is arranged so as to cover the front surface of the display screen 2A, and protects the display screen 2A from the outside by configuring the front appearance of the display device 1. . Below the display screen 2A, an operation unit 2C including a dial and a plurality of rubber keys is provided.

  The panel member 4 is formed of a resin material and has a frame shape surrounding the display unit 2 so as to cover the entire side surface of the display unit 2, and an intervening interposed between the liquid crystal panel 2A1 and the backlight 2A2. 4B and the skeleton part 4C which makes the skeleton of the dial of the operation part 2C. The frame-like portion 4 </ b> A of the panel member 4 constitutes the appearance of the front side surface of the display device 1.

  The cover member 6 has a substantially box shape that opens to the front, and is arranged on the rear side of the display unit 2 and the panel member 4 to configure the appearance of the rear of the display device 1. The cover member 6 is formed of a resin material, and is attached to the rear side of the panel member 4 along the inner periphery thereof. The cover plate 6 has a substantially square flat plate portion 6A, and an attachment projecting in a cylindrical shape from the back surface of the flat plate portion 6A. Part 6B. A part of the flat plate portion 6 </ b> A of the cover member 6 is assembled with the panel member 4. The assembly structure of the panel member 4 and the cover member 6 will be described in detail later.

  As shown in FIGS. 2 and 3, a thread groove 6C is formed in a part of the outer peripheral surface of the mounting portion 6B, and an annular mounting nut 20 is screwed into the thread groove 6C. When the display device 1 of the present embodiment is attached to an attachment hole (not shown) of an attachment panel provided on the hull or the like, the attachment portion 6B of the display device 1 is inserted into the attachment hole, and the attachment nut 20 is screwed into the screw groove 6C. By combining, the opening edge of the mounting hole of the mounting panel is sandwiched between the flat plate portion 6 </ b> A and the mounting nut 20. Thereby, the display apparatus 1 can be attached to an attachment panel. A plurality of protrusions 20A are formed on the outer peripheral surface of the mounting nut 20 at substantially equal intervals over the entire periphery.

  As shown in FIG. 2, three power connectors 7 </ b> A and 7 </ b> B that open downward to supply power to the display unit 2 are provided on the upper semicircular portion of the rear surface of the mounting portion 6 </ b> B that has a circular shape. It has been. Of the three power connectors 7A and 7B, one connector provided substantially in the center is the first power connector 7A, and the other two are the second power connectors 7B. When the display device 1 is operated, one of the first power connector 7A and the second power connector 7B is used, and the other is sealed with a seal tape or the like.

  As shown in FIG. 2, a protruding portion 6D that further protrudes rearward is provided on the lower semicircular portion of the rear surface of the circular mounting portion 6B. On the right side of the protruding portion 6D, there is provided a housing portion 8 that opens to the left side and the rear side. A metal locking member 30 is accommodated in the accommodating portion 8. The lock member 30 is movable along the front-rear direction (Z-axis direction) while being accommodated in the accommodating portion 8.

  The lock member 30 extends in a state where the lock member 30 is housed in the housing portion 8 until the tip thereof is positioned on the side of the mounting nut 20, and a bent portion 30 </ b> A that is bent and extends inward is provided at the tip. Yes. The bent portion 30A enters between the pair of protrusions 20A among the plurality of protrusions 20A provided on the outer peripheral surface of the mounting nut 20, and thereby the mounting nut 20 is locked so as not to rotate. And the lock of rotation of the attachment nut 20 can be cancelled | released by moving the lock member 30 along the front-back direction to the position which remove | deviates from between a pair of protrusions 20A.

  As shown in FIG. 4 and the like, the power supply board 10 connected to the first power connector 7A and the second power connector 7B is disposed in the space S1 formed inside the mounting portion 6B. The electric power input to the power supply board 10 through the first power supply connector 7A or the second power supply connector 7B is supplied to the backlight 2A2 through the power supply board 10. A space S2 (see FIG. 4) formed between the panel member 4 and the flat plate portion 6A of the cover member 6 communicates with the space S1, and the display screen of the display unit 2 is included in the space S2. 2A is arranged.

(Assembly structure of panel member and cover member)
Next, the assembly structure of the panel member 4 and the cover member 6 will be described. As shown in FIGS. 4 to 6, the inner periphery of the frame-like portion 4 </ b> A of the panel member 4 has a groove-like shape that opens on the side opposite to the display screen 2 </ b> A (the cover member 6 side, the rear side of the display device 1). A fitting groove 4D is provided. This fitting groove 4D is formed in the whole area of the inner periphery along the frame-like part 4A.

  On the other hand, as shown in FIG. 4, the cover member 6 has an end side of the flat plate portion 6 </ b> A slightly protruding forward over the entire circumference, and the protruding portion forms a substantially box shape and opens forward. The edge 6E of the cover member 6 is formed. The entire area of the edge 6 </ b> E of the cover member 6 is arranged inside the frame-like portion 4 </ b> A of the panel member 4. The display screen 2 </ b> A of the display unit 2 and the interposition part 4 </ b> B of the panel member 4 are arranged inside the edge 6 </ b> E of the cover member 6.

  As shown in FIG. 5, the groove width of the fitting groove 4 </ b> D of the panel member 4 is slightly larger than the thickness of the edge 6 </ b> E of the cover member 6. And as shown in FIG. 4 thru | or FIG. 6, the edge 6E of the said cover member 6 is fitted by the fitting groove 4D over the perimeter. The edge 6E of the cover member 6 is in contact with the bottom surface 4D1 of the fitting groove 4D in a state where the edge 6E is fitted in the fitting groove 4D, whereby the flat plate portion of the panel member 4 and the cover member 6 is obtained. Airtightness of space S2 formed between 6A is ensured. With such a structure, the panel member 4 and the cover member 6 are assembled together.

  The frame-like portion 4A of the panel member 4 has a taper shape that slightly inclines outward toward the rear side, and thereby, between the fitting groove 4D of the panel member 4 and the edge 6E of the cover member 6. A gap S <b> 3 (see FIGS. 4 and 6) that is exposed to the rear outside of the display device 1 is formed. As shown in FIG. 5, a sealing agent (an example of an adhesive) 40 is embedded in the gap S3. 4 and 6, illustration of the sealing agent 40 is omitted for the explanation of the gap S3.

  As the sealing agent 40 embedded in the gap S3, for example, a silicon-based one is used. When the panel member 4 and the cover member 6 are assembled in the manufacturing process of the display device 1, first, the edge 6E of the cover member 6 is fitted into the fitting groove 4D of the panel member 4, and the tip portion is fitted. The groove 4D is brought into contact with the bottom surface 4D1. Next, the liquid sealant 40 is poured into the gap S3 formed between the fitting groove 4D and the edge 6E of the cover member 6, and then the sealant 40 is solidified, whereby the panel member 4 and the cover are solidified. The member 6 is bonded to each other through the sealant 40 at the assembly portion. The panel member 4 and the cover member 6 can be assembled by the above procedure.

(Effect of embodiment)
As described above, in the display device 1 of the present embodiment, the display unit is provided in the space S2 formed between the panel member 4 and the flat plate portion 6A of the cover member 6 by assembling the panel member 4 and the cover member 6. 2 display screens 2A are arranged. At this time, the edge 6E of the cover member 6 is fitted into the fitting groove 4D of the panel member 4, and both of them are assembled so that the front end thereof is in contact with the bottom surface 4D1 of the fitting groove 4D. For this reason, the cover member 6 is less likely to be detached from the panel member 4 as compared with a configuration in which the panel member 4 and the cover member 6 are assembled in a state in which both are in surface contact with each other.

  Since the cover member 6 is difficult to come off from the panel member 4 as described above, the panel member 4 and the cover member 6 are in surface contact with each other even when the display device 1 vibrates. Compared to the conventional structure assembled in the above, the gap between the panel member 4 and the cover member 6 is less likely to occur, and the airtightness of the space formed between the panel member 4 and the flat plate portion 6A of the cover member 6 is reduced. Has been increased. As a result, it is possible to effectively prevent or suppress water or the like from entering the space where the display screen 2A is arranged. Therefore, the display device 1 of the present embodiment is suitable particularly in the field of fish finder where waterproofness is required.

  Further, in the display device 1 of the present embodiment, the sealing agent 40 is embedded in the gap S3 exposed to the outside at the assembly portion between the fitting groove 4D of the panel member 4 and the edge 6E of the cover member 6. With such a configuration, the panel member 4 and the cover member 6 are fixed to each other through the sealing agent 40, and the gap between the fitting groove 4D of the panel member 4 and the edge 6E of the cover member 6 is between. The gap S3 exposed to the outside is sealed by the sealing agent 40. For this reason, the airtightness of the space formed between the panel member 4 and the flat plate portion 6A of the cover member 6 can be further enhanced, and it is more effective that water or the like enters the space where the display screen 2A is arranged. Can be prevented or suppressed.

  Here, in the conventional configuration in which a waterproof member such as a packing is sandwiched between the panel member and the cover member in the front-rear direction, the combined surface of the panel member and the cover member on the side surface of the display device Is formed. In this case, when the display device is exposed to a high temperature environment, each of the panel member and the cover member spreads outward due to thermal expansion, and the combined surface may be displaced, and the design of the display device may be deteriorated. On the other hand, in the display device 1 of the present embodiment, the edge 6E of the cover member 6 is fitted into the fitting groove 4D provided on the inner periphery of the frame-like portion 4A of the panel member 4, so The combined surface is not formed on the side surface. For this reason, even if the display device 1 is exposed to a high temperature environment and each of the panel member 4 and the cover member 6 is thermally expanded, the design of the display device 1 is not deteriorated.

  In the present embodiment, the edge 6E of the cover member 6 is fitted into the fitting groove 4D of the panel member 4, and the both ends are assembled in such a manner that the front end thereof contacts the bottom surface 4D1 of the fitting groove 4D. For this reason, compared with the conventional structure assembled | attached in the state which both contact | abutted in the assembly | attachment part of the panel member 4 and the cover member 6, the area of the part which the panel member 4 and the cover member 6 overlap is enlarged. In addition, it is not necessary to provide a space for arranging a waterproof member such as packing in the front-rear direction of the display device 1. Thus, compared to the conventional configuration in which the panel member 4 and the cover member 6 are assembled in a state in which the panel member 4 and the cover member 6 are in contact with each other, the thickness of the assembled portion (the dimension in the front-rear direction and the dimension in the Z axis direction) ) Can be reduced. As a result, the display device 1 can be thinned.

  Further, in the conventional configuration in which a waterproof member such as packing is interposed between the panel member and the cover member in the assembled portion, these are attached by a plurality of screws from the back side of the cover member in order to sandwich the waterproof member therebetween. It must be screwed. On the other hand, in the display device 1 according to the present embodiment, since the waterproof member is not interposed between the panel member 4 and the cover member 6, screwing for the pinching is not necessary, and necessary screws are not necessary. The number can be reduced. For this reason, the designability of the display apparatus 1 can be improved.

  Moreover, in the conventional structure which requires the screwing for the said pinching, there exists a possibility that rattling may generate | occur | produce in the assembly part of a panel member and a cover member resulting from loosening etc. of a screw. On the other hand, in the display device 1 of the present embodiment, the screwing for pinching is not necessary, and the number of necessary screws can be reduced. Therefore, compared with the conventional configuration that requires the screwing for pinching. Thus, it is possible to prevent or suppress the occurrence of rattling in the assembled portion of the panel member 4 and the cover member 6.

  Moreover, in this embodiment, it becomes the structure by which the panel member 4 and the cover member 6 are assembled | attached in the form by which the edge 6E of the cover member 6 is fitted by the fitting groove | channel 4D of the panel member 4 over the perimeter. Yes. For this reason, the panel member 4 and the cover member 6 can be assembled | attached stably compared with the conventional structure which requires the screwing for the said clamping.

  Further, when the display device is used as a fish finder attached to a ship, the front side is more easily exposed to waves than the rear side of the display device. Therefore, when the edge of the cover member is fitted to the fitting groove of the panel member so that the fitting groove of the panel member opens to the front side of the display device, the display device is a fish finder. When used as, there is a possibility that water may enter the gap between the fitting groove of the panel member and the edge of the cover member. On the other hand, in this embodiment, the edge 6E of the cover member 6 is fitted to the fitting groove 4D of the panel member 4 so that the fitting groove 4D of the panel member 4 opens to the rear side of the display device 1. Therefore, even when the display device 1 is used as a fish finder, water is more difficult to enter between the fitting groove 4D of the panel member 4 and the edge 6E of the cover member 6. It has become.

<Modification of Embodiment>
A modification of the above embodiment will be described. In the display device according to the modification, the second fitting groove is further formed inside the fitting groove of the panel member, and the second end edge is further formed inside the end edge of the cover member. Then, the edge of the cover member is fitted into the fitting groove and the second edge is fitted into the second fitting groove so that the panel member and the cover member are assembled to each other. It has become. With such an assembly structure, the fitting portion between the panel member and the cover member is formed in a double manner, thereby further improving the airtightness of the space formed in the flat plate portion of the panel member and the cover member. be able to. As a result, water or the like can be further prevented or suppressed from entering the space where the display screen is arranged.

<Other embodiments>
The present invention is not limited to the embodiments described above and with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.

(1) In the above embodiment, the configuration in which the end of the cover member is in contact with the bottom surface of the fitting groove while the end edge of the cover member is fitted in the fitting groove is exemplified. There is no limitation on the part where the tip of the edge abuts. For example, the structure which the front-end | tip part of the edge of a cover member contact | abuts to the side surface of a fitting groove may be sufficient.

(2) In the above embodiment, a configuration in which the fitting portion between the panel member and the cover member is formed in a single layer, and in a modification, a configuration in which the fitting portion between the panel member and the cover member is doubled. Although each illustrated, the structure by which the fitting part of the panel member and the cover member was formed in triple or more may be sufficient.

(3) In the above-described embodiment, the frame-shaped portion of the panel member is exemplified as a taper shape slightly inclined outward toward the rear side. For example, the frame-shaped portion of the panel member is on the rear side. The taper may be slightly inclined inward. In this configuration, it is possible to make it difficult for water or the like to enter the inside of the frame-like portion as compared to a case where the taper is inclined outward toward the rear side. In this case, for example, the edge of the cover member is tapered to be slightly inclined outward toward the front side, so that a sealing agent or the like is embedded between the frame-shaped portion of the panel member and the edge of the cover member. Space can be provided.

(4) In the above embodiment, the configuration in which the frame-shaped portion of the panel member is tapered is exemplified, but the frame-shaped portion of the panel member and the edge of the cover member do not have to be tapered. In addition to tapering the edge of the panel member and the cover member, the frame member and the edge of the cover member can be formed by providing a cutout in the frame or edge. A space for embedding a sealant or the like can be provided therebetween. In short, when the edge of the cover member is fitted in the fitting groove of the panel member, a gap exposed to the outside may be provided between the fitting groove and the edge.

(5) In the above embodiment, a screw groove is formed in the attachment portion, and the opening edge of the attachment hole of the attachment panel provided in the hull or the like is sandwiched between the flat plate portion and the attachment nut screwed into the attachment portion. Thus, the configuration in which the display device can be attached to the mounting panel is illustrated, but a configuration without a mounting nut may be used, and the mounting structure and mounting mode of the display device with respect to the mounting panel are not limited.

(6) In the above embodiment, the configuration in which the mounting nut is locked in a non-rotatable manner by the lock member accommodated in the accommodating portion of the cover member has been exemplified. However, a configuration without such a lock member may be employed. .

(7) In the above embodiment, the display device used for the fish finder or the like has been exemplified, but the present invention can also be applied to display devices used for various other purposes.

  As mentioned above, although embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

DESCRIPTION OF SYMBOLS 1 ... Display apparatus 2 ... Display part 2A ... Display screen 2A1 ... Liquid crystal panel 2A2 ... Backlight 2B ... Protection panel 2C ... Operation part 4 ... Panel member 4A ... Frame-like part 4B ... Interposition part 4C ... Skeletal part 4D ... Fitting groove 4D1 ... bottom surface of fitting groove 6 ... cover member 6A ... flat plate portion 6B ... mounting portion 6C ... screw groove 6D ... projecting portion 6E ... edge of cover member 8 ... accommodating portion 10 ... power supply board 20 ... mounting nut 20A ... Projection 30 ... Lock member 30A ... Bending part 40 ... Sealing agent S1 ... Space formed inside the attachment part S2 ... Space formed between the panel member and the flat plate part of the cover member S3 ... Fitting groove and Externally exposed gap between edges

Claims (2)

A display unit having a display screen;
A panel member provided with a groove-like fitting groove that opens on the opposite side of the display screen along the inner circumference of the frame surrounding the display unit;
And a cover member that is attached to the panel member by having its end edge fitted into and in contact with the fitting groove. The display device according to claim 1,
A display device, wherein an adhesive is embedded in a gap exposed to the outside between the fitting groove and the end edge.

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