JP2013101218A - Front unit of display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front unit of a display device that prevents entry of a liquid such as oil.SOLUTION: The front unit of the display device includes: a panel 11 having a trunk body 11b in a square tube shape that accommodates the display device, and a collar part 11a that projects outward from a front end of the trunk part 11b and having projections 14, 15 formed at respective upper and lower sides; a protective sheet 2 arranged in front of the collar part 11a; and a flange 12 including a side face part 12b which is cylindrical so that the collar part 11a can be inserted and provided with recessed parts corresponding to the projections 14, 15 on an inner cylinder surface, and an opening 12c, having a front part 12a provided to a front end part of the side face part 12b and having a projection formed surrounding the opening 12c on its back side, and mounted on the collar part 11a with the protective sheet 2 sandwiched with the front of the collar part 11a, the height of the projections on a lower side of the collar part 11a being larger than the height of the projections on an upper side of the collar part 11a.

Description

  The present invention relates to a front unit of a display device.

  In the conventional display device, the protective sheet is attached to the front surface of the front panel with double-sided tape.

  A technique is also known in which a flange is attached to the front panel so that the protective sheet is sandwiched between the front panel and the end surface of the protective sheet is covered with the flange (see, for example, Patent Document 1). In this structure, an assembly part including the front panel, the protective sheet, and the flange can be handled as a front unit.

Japanese Utility Model Publication No. 6-21286

  However, when the conventional display device is used for a long period of time, a liquid such as oil accumulates at the end of the protective sheet, and further penetrates into the double-sided tape and enters the inside of the device. Liquids such as oil that has entered inside the device are applied to electronic devices such as a touch panel and a liquid crystal, and there is a problem that the device does not move.

  Further, even in a structure in which a flange is attached to the front surface of the display device so as to cover the end face of the protective sheet as in Patent Document 1, liquid such as oil enters from the gap between the flange and the protective sheet and wraps around the back side of the protective sheet. In some cases, electronic devices such as touch panels and liquid crystals were damaged.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a front unit of a display device in which a liquid such as oil is prevented from entering.

  In order to solve the above-described problems and achieve the object, the present invention includes a rectangular tube-shaped body portion that accommodates a display device, and at least first protrusions that protrude outward from the front end of the body portion on the upper and lower sides. A panel having a single collar portion, a protective sheet disposed on the front surface of the collar portion to protect the display device, a cylindrical shape into which the collar portion can be inserted, and a first protrusion on the inner cylinder surface A side surface provided with a recess corresponding to each of the above, and a front surface provided with an opening and provided at the front end of the side surface, and on the back side formed with a second protrusion so as to surround the opening. And a flange mounted on the collar so as to sandwich the protective sheet with the front surface of the collar, and the height dimension of the first protrusion on the lower side of the collar is the first height on the upper side of the collar It is characterized by being larger than the height dimension of the protrusion.

  According to the present invention, it is possible to prevent liquid such as oil from entering through the gap between the flange and the protective sheet and wrapping around the back side of the protective sheet, thereby causing failure of electronic devices such as a touch panel and a liquid crystal.

FIG. 1 is an exploded perspective view showing a configuration of an embodiment of a front unit of a display device according to the present invention. FIG. 2 is a perspective view of the flange as viewed from the back side. FIG. 3 is a partially enlarged view of the flange. FIG. 4 is a vertical sectional view of the front unit. FIG. 5 is a partially enlarged view of the front unit. FIG. 6 is a cross-sectional view showing the front unit with the flange removed from the panel.

  Embodiments of a front unit of a display device according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment.
FIG. 1 is an exploded perspective view showing a configuration of an embodiment of a front unit of a display device according to the present invention. The front unit is configured as an assembly part of the flange 12, the protective sheet 2, and the panel 11. The panel 11 includes a rectangular tube-shaped body 11b that accommodates a display device (not shown in FIG. 1), and a flange 11a that protrudes outward from the front end of the body 11b. A protrusion 14 is provided on the upper side of the flange 11a, a protrusion 15 is provided on the lower side, and a protrusion 13 is provided on the left and right sides. The flange 12 has a cylindrical side surface portion 12b into which the flange portion 11a can be inserted, and a front surface portion 12a provided with an opening 12c and provided at the front end portion of the side surface portion 12b. The protective sheet 2 is affixed to the panel 11 with a double-sided tape 5. The flange 12 is dimensioned to wrap (overlap) the protective sheet 2. The flange 12 is placed on the panel 11 from above the protective sheet 2 and is fixed to the panel 11 by projections (first projections) 13 to 15.

  FIG. 2 is a perspective view of the flange 12 as seen from the back side. FIG. 3 is a partially enlarged view of the flange 12 and shows a portion A of FIG. On the back side of the front surface portion 12a, a protrusion (second protrusion) 24 is provided at a portion in contact with the protective sheet 2 so as to surround the opening 12c. In addition, a concave portion 17 is provided on the inner cylindrical surface of the side surface portion 12b corresponding to each of the protrusions 13, 14, and 15. Further, a groove 18 is formed in the flange 12 so as to reach the end on the back side of the side surface portion 12b from the concave portion 17 on the lower side. The flange 12 is fixed to the panel 11 by the protrusions 13 to 15 entering the recess 17.

  FIG. 4 is a vertical sectional view of the front unit. FIG. 5 is a partially enlarged view of the front unit, and shows a portion B in FIG. A display device 10 is accommodated in the body portion 11b, and a touch panel 9 is disposed on the front surface of the display device 10. The protective sheet 2 protects the touch panel 9 and the display device 10. When the protrusions 13, 14, and 15 provided on the panel 11 are fitted into the recesses 17 of the flange 12, the protrusion 24 presses the surface of the protective sheet 2 attached to the panel 11. The protrusion 24 is made of a rubber material by two-color molding, or is pasted with a material such as soft rubber so that the protrusion 24 is brought into close contact with the surface of the protective sheet 2 and liquid such as oil enters from the front surface. It is easy to realize a structure that prevents this. However, these methods are examples, and the protrusions 24 can be formed by different methods. By forming the protrusion 24 by two-color molding, it becomes easy to form the protrusion 24 in a complicated shape such as a double protrusion as shown in FIG. In addition, when a soft material is pasted to form the projection 24, as shown in FIG. 5B, the pasting operation is facilitated by making the member serving as the projection 24 into a simple shape. When performing two-color molding, plastic (for example, PBT (polybutylene terephthalate) plastic) can be used as the first molding material, and elastomer can be used as the second molding material. The material is not limited.

  As for the upper part of the front unit, since the gap 22 between the back side of the front surface portion 12a and the protective sheet 2 is closed by the protrusion 24 as in FIG. 5, the intrusion from the gap 22 is prevented. .

  FIG. 6 is a cross-sectional view showing the front unit with the flange 12 removed from the panel 11. By setting the relationship between the dimension a of the projection 14, the dimension b of the projection 15, and the dimension c of the recess 17 as c> a and c <b, as shown in FIG. 4, between the flange 12 and the panel 11 on the lower side A gap 20 is formed in the gap, and a liquid such as oil that has entered through the gap 19 passes through the gap 20 and is discharged to the outside of the front unit. That is, by setting the dimensions of the flange 12 and the panel 11, a gap 20 is formed at the lower portion of the front unit, and liquid such as oil can be discharged in the direction of arrow C.

  Further, the dimension d on the upper side of the flange portion 11a of the panel 11 is made shorter by (ba) than the dimension e on the lower side, and the dimension (a + d) from the body part 11b to the tip of the protrusion 14 is determined as follows. If the dimension (b + e) from the projection 15 to the tip of the projection 15 is made equal, the dimensions f and g of the exposed portion of the front surface of the panel 11 at the opening of the flange 12 are the height a of the projections 14 and 15, Regardless of the difference in b, the vertical length of the panel 11 is the same, and the vertical center of the panel 11 and the vertical center of the flange 12 can be aligned.

  In addition, a groove 18 is provided in the concave portion 17 so that liquid such as oil can be easily discharged, and a chamfer 27 is formed at the end of the side surface portion 12 b of the flange 12 on the back surface side. By providing the groove 18 and the chamfer 27, liquid such as oil does not stay between the flange 12 and the panel 11, so that the lower part of the protective sheet 2 does not immerse in the liquid such as oil and penetrates into the double-sided tape 5. Therefore, oil can be prevented from entering.

  Since the groove 18 and the chamfer 27 are not exposed on the front surface and the upper and lower surfaces of the display device, the appearance of the flange 12 is not impaired and the design can be improved.

  As described above, according to the present embodiment, since liquid such as oil does not accumulate on the end face of the protective sheet, it is possible to prevent oil or the like from entering the device from the end of the protective sheet.

  Further, since the flange and the panel are coupled by fitting with the concave portion of the protrusion, no tool is required during assembly work, and the productivity is excellent. Moreover, since the structure is simple, the manufacturing cost of the components can be kept low.

  As described above, the front unit of the display device according to the present invention is suitable for use in a display device that is installed in a place that requires resistance to a liquid such as oil.

2 Protective sheet 5 Double-sided tape 9 Touch panel 10 Display device 11 Panel 12 Flange 13, 14, 15, 24 Protrusion 17 Recess 18 Groove 19, 20, 22 Gap 25 Rubber material 26 Rubber 27 Chamfer

Claims (3)

A panel including a rectangular tube-shaped body portion that accommodates the display device, and a flange portion that projects outward from the front end of the body portion and has at least one first protrusion formed on each of the upper and lower sides;
A protective sheet that is disposed on the front surface of the flange and protects the display device;
A cylindrical shape into which the collar portion can be inserted; a side surface portion provided with a recess corresponding to each of the first protrusions on the inner cylindrical surface; and an opening provided at a front end portion of the side surface portion; A flange that is attached to the flange so as to sandwich the protective sheet between the front surface of the flange and the front surface formed with a second protrusion so as to surround the opening. With
The front unit of the display device, wherein a height dimension of the first protrusion on the lower side of the collar part is larger than a height dimension of the first projection on the upper side of the collar part.   2. The front unit of a display device according to claim 1, wherein the flange includes a groove extending from the concave portion on the lower side of the side surface portion to an end on the back surface side of the side surface portion.   The front unit of the display device according to claim 2, wherein a chamfer is applied to an end of the side surface on the back side.

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