JP3089348U - Television and picture tube positioning structures - Google Patents

Abstract

(57) [Summary] (Modifications) [Problem] In a side drop test, a rib is deformed due to an impact force applied to a side from a picture tube, and the rib conforms to a rib shape on an outer surface of a side wall of a front cabinet. Provided are a television and a picture tube positioning structure capable of preventing deformation marks. SOLUTION: An inner surface of a side wall 12 of a front cabinet is formed into a substantially semi-cylindrical shape which bulges toward an outer peripheral surface of a picture tube 30 to abut on the outer peripheral surface to position the picture tube 30 and an inner surface of a front wall of the front cabinet. A rib 20 integrally formed on the inner surface of the side wall 12 so that the central axis thereof stands substantially in the front-rear direction from the inner surface of the front wall of the front cabinet at the contact portion with the outer peripheral surface of the picture tube. The substantially cylindrical boss-shaped reinforcing portion 22 which is erected is formed in a state of being joined to the rib 20.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a television having a picture tube mounted on a cabinet having a front wall and a side wall, and a picture tube positioning structure.

[0002]

[Prior art]

 2. Description of the Related Art FIG. 6 shows an example of a picture tube positioning structure for a television of this type. In the figure, the television includes a front cabinet 1 made of resin and a picture tube 2 attached to the front cabinet 1 with the display surface facing the front. The front cabinet 1 is integrally formed with a front wall 3 having an opening conforming to the shape of the display surface of the picture tube 2 and a side wall 4 extending rearward from an edge of the front wall 3. I have. The front cabinet 1 has a plurality of positioning ribs 5 for positioning the picture tube 2 in contact with the outer peripheral surface of the picture tube 2. Here, since the front cabinet 1 is integrally formed, a boss directed in the left-right direction cannot be formed. Therefore, the plurality of ribs 5 are formed into a substantially semi-cylindrical shape swelling from the inner surface of the side wall 4 toward the outer peripheral surface of the picture tube 2, and abut the outer peripheral surface of the picture tube 2 to position the picture tube 2. I have to. FIG. 7 is an enlarged view of a main part of the rib 5. The rib 5 is formed integrally with the inner surface of the side wall 4 so that the semi-cylindrical center axis stands substantially in the front-rear direction from the inner surface of the front wall 3. In the present television, a plate-like extension 5a extending toward the outer peripheral surface of the picture tube is formed at a position where the rib 5 comes into contact with the outer peripheral surface of the picture tube 2, and the extension portion 5a The picture tube 2 is positioned.

[0003]

[Problems to be solved by the invention]

 The conventional technique described above has the following problems. That is, when a drop test is performed with one of the side walls 4 directed downward, the rib 5 deforms beyond the elastic limit due to the impact force F1 applied from the picture tube 2 to the side as shown in FIG. Further, deformation marks 6 along the rib shape may appear on the outer surface of the side wall 4. Therefore, there was a desire to prevent deformation marks on the outer wall even when an impact was applied from the side. Further, a technique disclosed in Japanese Patent Application Laid-Open No. 53-144218 is also known, but it is necessary to minimize a weld line generated when the television cabinet is injection-molded so as not to impair the appearance of the injection-molded product. This is a technique for maintaining the strength of the cabinet, and cannot solve the problem of preventing deformation marks along ribs for positioning the picture tube. The present invention has been made in view of the above-described problems, and has a television and a television capable of preventing a deformation mark along a rib shape from being generated on an outer surface of a side wall of a cabinet even when an impact is applied from a side. The purpose is to provide a picture tube positioning structure.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 is a resin front cabinet in which a front wall having an opening and a side wall extending rearward from an edge of the front wall are integrally formed. And a picture tube attached to the front cabinet with the display surface facing the front. The front cabinet is formed in a substantially semi-cylindrical shape bulging from the inner surface of the side wall toward the outer peripheral surface of the picture tube. The television has a rib integrally formed on the inner surface of the side wall so that the same picture tube is positioned in contact with the surface and the central axis is erected from the inner surface of the front wall so as to extend substantially in the front-rear direction. A substantially cylindrical boss-shaped reinforcing portion which is erected from the inner surface of the front wall of the front cabinet so as to reinforce the rib at a contact portion of the rib with the outer peripheral surface of the picture tube is joined to the rib. Shape As well as, it is constituted that the length extending in the rear side while extending toward the outer circumferential surface of the picture tube in the reinforcement portion is formed an extension portion which is shorter tapered.

That is, in a resin front cabinet in which a front wall having an opening and a side wall extending rearward from an edge of the front wall are integrally formed, an image receiving apparatus having a display surface facing the front is provided. A tube can be attached. The picture tube is formed into a substantially semi-cylindrical shape that bulges from the inner surface of the side wall of the front cabinet toward the outer peripheral surface of the picture tube, abuts the outer peripheral surface, and stands upright from the inner surface of the front wall with the central axis substantially in the front-rear direction. It is positioned by a rib integrally formed on the inner surface of the side wall so as to be provided. Here, a substantially cylindrical boss-shaped reinforcing portion which is erected from the inner surface of the front wall of the front cabinet so as to reinforce the rib is formed, and the reinforcing portion is in contact with the outer peripheral surface of the picture tube at the rib. It has been ranked. Therefore, the ribs have increased strength and are less likely to be deformed, so that even when an impact is applied from the side, it is possible to prevent the formation of deformation marks along the rib shape on the outer surface of the side wall of the front cabinet. . In addition, the reinforcing portion is formed with a tapered extension that extends toward the outer peripheral surface of the picture tube and extends rearward. When the picture tube is mounted from the side, the picture tube is guided by the tapered extension, so that the picture tube can be easily positioned. In addition, the substantially semi-cylindrical shape of the rib whose center axis is directed substantially in the front-rear direction includes a substantially complete semi-cylindrical shape, and a substantially U-shape in which two ends on the opening side are substantially parallel in a vertical cross section. Conversely, a shape such as a substantially semicircular shape that is flat in a vertical cross section is also included.

Meanwhile, the side wall of the cabinet is formed in a hollow shape which bulges from the inner surface of the side wall toward the outer peripheral surface of the picture tube, abuts on the outer peripheral surface, and is erected substantially in the front-rear direction from the inner surface of the front wall. The present invention can be applied to a case where a rib is formed on the inner surface. In view of the above, the invention according to claim 2 provides a cabinet having a front wall and a side wall formed in a hollow shape bulging from the inner surface of the side wall toward the outer peripheral surface of the picture tube, and coming into contact with the outer peripheral surface. A picture tube positioning structure in which a rib is formed on the inner surface of the side wall so as to stand substantially in the front-rear direction from the inner surface of the front wall, and the picture tube is positioned by the rib. A column-shaped reinforcing portion connected to the inner surface of the front wall of the cabinet is formed at a contact portion with the outer peripheral surface.

That is, the picture tube has a hollow shape that expands from the inner surface of the side wall of the cabinet toward the outer peripheral surface of the picture tube, abuts on the outer peripheral surface, and stands substantially in the front-rear direction from the inner surface of the front wall of the cabinet. The ribs are positioned by the ribs formed on the inner surface of the side wall of the cabinet. Here, a columnar reinforcing portion connected to the inner surface of the front wall of the cabinet is formed, and the reinforcing portion is a contact portion of the rib with the outer peripheral surface of the picture tube. Therefore, the ribs have increased strength and are less likely to be deformed, so that even when an impact is applied from the side, it is possible to prevent the formation of deformation marks along the rib shape on the outer surface of the side wall of the cabinet. The front wall of the cabinet may be arranged sideways, upward, or downward, and all of these cases are included in the front wall referred to in the present invention.

[0008] Here, as an example of the rib having a hollow shape, the invention according to claim 3 is directed to a cabinet having a front wall and a side wall formed on a cabinet from the inner surface of the side wall to the outer peripheral surface of the picture tube. A rib is formed on the inner surface of the side wall so as to bulge into a substantially semi-cylindrical shape, abut on the outer peripheral surface, and stand upright from the inner surface of the front wall with the central axis directed substantially in the front-rear direction. A picture tube positioning structure for positioning a tube, wherein a column-shaped reinforcing portion connected to an inner surface of a front wall of the cabinet is formed at a contact portion of the rib with an outer peripheral surface of the picture tube. is there. That is, by forming a columnar reinforcing portion that is connected to the inner surface of the front wall of the cabinet at a portion of the substantially semi-cylindrical rib that comes into contact with the outer peripheral surface of the picture tube, the rib is improved in strength and deformed. It becomes difficult.

[0009] There are various possible shapes of the columnar reinforcing portion. As an example, the invention according to claim 4 is configured such that the reinforcing portion is formed in a substantially cylindrical shape. That is, the reinforcing portion can be formed with a simple structure having a substantially cylindrical shape. In particular, when the cabinet is integrally formed, the reinforcing portion can be easily formed. Further, when the diameter is gradually reduced toward the rear side, a more preferable configuration is obtained when the cabinet is integrally formed. Needless to say, the reinforcing portion may have various shapes other than the substantially cylindrical shape. For example, the reinforcing portion may have an elliptical column shape or a square column shape.

According to a fifth aspect of the present invention, in the reinforcing portion, the length extending toward the outer peripheral surface of the picture tube and the length extending at the rear side is reduced in a tapered shape. The configuration is such that a protrusion is formed. That is, when the picture tube is mounted from the rear side of the cabinet, the picture tube is guided by the tapered extension. Of course, if the extension is tapered, it is useful in that the picture tube can be guided and positioned easily, but it is possible to position the picture tube without making the extension tapered. There is no alternative. Further, even if the extension portion is not formed, the picture tube can be positioned without fail.

Further, the rib may have a shape extending from the reinforcing portion to a side opposite to the extending portion. As an example, the invention according to claim 6 is configured such that the reinforcing portion is formed with a second extending portion connected to the side wall of the cabinet in the hollow portion of the rib toward the side wall of the cabinet. That is, the second extending portion connects the reinforcing portion and the side wall of the cabinet so as to divide the hollow portion of the rib. Therefore, the rib has further improved strength and is less likely to be deformed. Note that a plurality of second extending portions may be provided so that the hollow portion of the rib is divided into three or more. Then, the strength of the rib is further improved and the rib is less likely to be deformed.

[0012]

[Effect of the invention]

 As described above, the present invention provides a television capable of preventing a deformation mark along the rib shape from being formed on the outer surface of the side wall of the front cabinet even when an impact is applied from the side. be able to. In addition, the picture tube can be easily positioned. In addition, according to the inventions according to claims 2 and 3, even when an impact is applied from the side, it is possible to prevent a deformation mark along the rib shape from being generated on the outer surface of the side wall of the cabinet. A tube positioning structure can be provided.

Further, according to the invention of claim 4, since the structure is simple, the reinforcing portion can be easily formed. Further, according to the invention of claim 5, it is possible to easily position the picture tube. Further, according to the invention of claim 6, it is possible to more reliably prevent a deformation mark along the rib shape from being generated on the outer surface of the side wall of the cabinet even when an impact is applied from the side. It becomes possible.

[0014]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in the following order. (1) Description of picture tube positioning structure: (2) Operation of picture tube positioning structure: (3) Modification of picture tube positioning structure:

(1) Description of Picture Tube Positioning Structure: FIG. 1 is a rear view of a part of a large television 100 having a picture tube positioning structure according to an embodiment of the present invention. The television 100 includes a front cabinet 10 made of a thermoplastic resin, and a picture tube 30 attached to the front cabinet 10 with the display surface facing the front. In the figure, the picture tube 30 is indicated by a dotted line. The front cabinet 10 has a front wall 11 having an opening 11a conforming to the shape of the display surface of the picture tube 30 and a side wall 12 extending rearward from upper, lower, left and right edges of the front wall 11 integrally. Is formed. Here, the side wall 12 formed in a thin plate shape is composed of an upper surface portion 12a, a right side surface portion 12b, a lower surface portion 12c, and a left side surface portion 12d so as to surround the outer peripheral surface 31 of the picture tube 30. The edge is connected to the peripheral edge of the front wall 11. That is, the front cabinet 10 constitutes the front of the television device housing. The resin front cabinet 10 is integrally formed with a predetermined mold.

The front wall 11 of the front cabinet of the present embodiment is arranged horizontally, and the positional relationship between up, down, left, right and front will be described based on this state. Of course, the front wall 11 may be arranged upward or downward.

At the four corners on the inner surface of the front wall 11 of the front cabinet, screw bosses that are erected to mount the picture tube 30 at predetermined positions are integrally formed, and these screw bosses are formed. Are provided with holes into which screws can be screwed. At the four corners of the outer peripheral surface 31 of the picture tube, stoppers 32 having through holes corresponding to the positions of the screw bosses are provided, and the respective stoppers 32 are fitted to the respective positions of the screw bosses. By arranging the picture tube 30 in such a manner, each of the fasteners 32 can be attached to the screwing boss with four screws. In this way, the picture tube 30 is mounted at a predetermined position on the front cabinet 10.

The front cabinet 10 has a plurality of positioning ribs 20 for positioning the picture tube 30 in contact with the outer peripheral surface 31 of the picture tube. The plurality of ribs 20 of the present embodiment are provided at two locations on the inner surface of the upper surface portion 12a of the side wall 12 (below the upper surface portion 12a in the figure) and at three locations on the inner surface of the right side surface portion 12b (the left side of the right side surface portion 12b in the figure). Are formed on the inner surface (right side of the left side portion in the figure) of the left side portion 12d. Of course, a rib for positioning the picture tube 30 may be formed on the lower surface 12c. Each rib 20 is formed in a substantially semi-cylindrical shape (a vertical section is substantially U-shaped) having a hollow shape bulging from the inner surface of the side wall 12 toward the outer peripheral surface 31 of the picture tube. The picture tube 30 is positioned in contact therewith.

FIG. 2 shows an enlarged view of one of the ribs 20 formed on the inner surface of the right side surface portion 12b as viewed from the lower left in FIG. The upper side of the figure is the rearward direction, the lower side is the forward direction, the upper left side is the upper side, and the lower right side is the lower side. A picture tube (not shown) is attached to the lower left of the figure. The rib 20 is integrally formed on the inner surface of the side wall 12 so as to stand upright from the inner surface of the front wall 11 with the semi-cylindrical center axis 21 substantially in the front-rear direction. In other words, the rib 20 is formed integrally with the front end 20a connected to the front wall 11, and the opening-side ends 20b, 20b in a substantially U-shaped vertical section are formed on the side wall 12. And are integrally formed in a state of being connected. The rib 20 has such a shape because it is formed integrally with the front cabinet 10, and it is difficult to form a columnar boss or the like in the direction from the front cabinet 10 to the left and right. It is.

In the rib 20, the picture tube 30 is positioned by contacting the outer peripheral surface 31 of the picture tube. The top portion of the semi-cylindrical shape (the base portion on the closing side in a substantially U-shaped vertical cross section) has A substantially cylindrical boss-shaped reinforcing portion 22 is erected from the inner surface. The substantially cylindrical reinforcing portion 22 is integrally formed in a state of being joined to the rib 20, and is integrally formed in a state of being connected to the inner surface of the front wall 11 at the front end 20a of the rib. It is formed. Therefore, the ribs 20 are reinforced by the columnar reinforcing portions 22 and are hardly deformed.

Further, the reinforcing portion 22 which is a contact portion of the rib 20 with the outer peripheral surface 31 of the picture tube extends toward the outer peripheral surface 31 of the picture tube (extends on the opposite side to the hollow portion 20c). The extended portion 23 is integrally formed. The extending portion 23 is formed in a plate shape, and is formed as a tapered portion 23a in which a length extending on a rear side (upper side in the drawing) is shortened in a tapered shape. That is, when the picture tube 30 is mounted from the rear side of the front cabinet 10, the picture tube 30 is guided by the tapered portion 23a, so that the picture tube 30 can be easily positioned. As a result, the picture tube 30 is positioned at the dotted line portion in FIG. 1 by the extending portion 23 of the rib, and is attached to a predetermined position of the front cabinet 10 with screws.

(2) Operation of picture tube positioning structure: The operation of the picture tube positioning structure when a shock is applied from the side by a side drop test will be described below. FIG. 3 schematically shows a state of a side drop test performed in a television manufacturing factory or the like. The side drop test is a drop test in which one of the side walls 12 is directed downward, and the example in the figure shows a drop test in which the right side surface portion 12b is directed downward. The drop test may be performed with the left side portion 12d and the upper surface portion 12a facing downward, or the drop test may be performed with the lower surface portion 12c facing downward. At the time of the drop test, the television is dropped with the lower side wall at a predetermined height H at a predetermined level place.

FIG. 4 shows the ribs 20 before and after the side drop test shown in FIG. When the side drop test is performed, an impact force F2 (rightward in the figure) is applied laterally from the heavy picture tube 30 as shown in the upper part of the figure. Here, since the rib 20 is made of resin integrally with the front cabinet 10 and has elasticity, the rib 20 is once elastically deformed rightward. However, since the rib 20 is formed integrally with the substantially cylindrical boss-shaped reinforcing portion 22, the rib 20 has an improved strength and is hardly deformed, and has an elastic limit even when the impact force F2 is applied. Not to exceed. Then, after the impact force is applied, the rib 20 returns to the original shape. Therefore, even when an impact is applied from the side, a phenomenon in which deformation marks along the rib shape are formed on the outer surface of the side wall 12 of the front cabinet unlike the related art is eliminated.

(3) Modifications of Picture Tube Positioning Structure The picture tube positioning structure of the present invention may have various modifications. In the above-described embodiment, the extension portion is formed at the portion where the rib comes into contact with the outer peripheral surface of the picture tube. However, the picture tube can be positioned without forming the extension portion. In this case, if the reinforcing portion itself having a substantially cylindrical boss shape is gradually reduced in diameter toward the rear side, it is suitable for integrally molding the cabinet, and the picture tube is arranged behind the front cabinet. When mounted from the side, the columnar reinforcing portion guides the picture tube, so that the picture tube can be easily positioned.

The rib may have a shape extending from the reinforcing portion to the opposite side from the extending portion. FIG. 5 shows an enlarged view of one of the ribs 120 constituting the picture tube positioning structure according to the modified example (a state facing obliquely from the lower left with reference to FIG. 1). Note that the same components as those in FIG. 2 are denoted by the same reference numerals and description thereof is omitted. In the figure, a substantially cylindrical boss-shaped reinforcing portion 22 is formed with a plate-shaped second extension portion 24 that is connected to the inner surface of the side wall 12 toward the side wall 12 of the front cabinet within the hollow portion of the rib 120. ing. In other words, the second extending portion 24 is formed integrally with the reinforcing portion 22 at the lower left side edge of the drawing so as to divide the hollow portion of the rib 120 into two hollow portions 20e. At the same time, it is formed integrally with the inner surface of the side wall 12 at the upper right edge of the figure.

As described above, when the vertical cross section of the rib 120 has a shape similar to the B-shape, the mold used for integrally molding with the front cabinet 10 forms two hollow portions 20 d and e. Since the top portion of the rib 20 becomes finer, the durability is lower than that of the top portion forming the hollow portion 20c in the rib 20 shown in FIG. However, since the second extending portion 24 connects the reinforcing portion 22 and the side wall 12 of the front cabinet so as to divide the hollow portion of the rib 120, the rib 120 is connected to the second extending portion 24. It is reinforced and hardly deformed.

When the side drop test is performed, an impact force similar to that shown in FIG. 4 is applied to the side from the heavy picture tube 30. Here, the ribs 120 are also made of resin integrally with the front cabinet 10 and have elasticity, so that the ribs 120 are once elastically deformed. However, since the second extension 24 is integrally formed with the rib 120, the strength of the rib 120 is improved and the rib 120 is hardly deformed. Even if an impact force is applied, the rib 120 does not exceed the elastic limit. become . Then, after the impact force is applied, the rib 120 returns to the original shape. Therefore, even when an impact is applied from the side, no deformation mark is formed on the outer surface of the side wall 12 of the front cabinet along the rib shape.

As described above, according to the present invention, according to the present invention, the strength of the ribs is improved by various aspects, and even when a shock is applied from the side, deformation marks along the rib shape are formed on the outer surface of the side wall of the cabinet. It is possible to provide a television and picture tube positioning structure that can be prevented from being caused.

[Brief description of the drawings]

FIG. 1 is a rear view showing a part of a large-sized television having a picture tube positioning structure according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part showing one of ribs from a position facing obliquely below left in FIG. 1;

FIG. 3 is a diagram schematically showing a state of a side drop test.

FIG. 4 is an enlarged view of a main part showing a state of ribs before and after a side drop test shown in FIG. 3 from the back side of a front cabinet.

FIG. 5 is an enlarged view of a main part showing one of ribs constituting a picture tube positioning structure according to a modification.

FIG. 6 is a rear view showing a part of a television having a picture tube positioning structure according to a conventional example.

FIG. 7 is an enlarged view of a main part showing a state of a rib before and after a side drop test from the back side of a front cabinet in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Front cabinet 11 ... Front wall 11a ... Opening 12 ... Side wall 12a ... Upper surface part 12b ... Right side surface part 12c ... Lower surface part 12d ... Left side surface part 20, 120 ... Rib 20a ... Front end part 20b ... Opening end part 20c- e ... hollow portion 21 ... central axis 22 ... reinforcing portion 23 ... extension portion 23a ... taper portion 24 ... second extension portion 30 ... picture tube 31 ... outer peripheral surface 100 ... television F2 ... impact force

Claims (6)

[Utility model registration claims] 1. A front cabinet made of a resin in which a front wall having an opening and a side wall extending rearward from an edge of the front wall are integrally formed, and the display surface is directed toward the front. A picture tube attached to the cabinet, wherein the front cabinet is formed in a substantially semi-cylindrical shape bulging from the inner surface of the side wall toward the outer peripheral surface of the picture tube, and abuts on the outer peripheral surface to position the picture tube. A television having a rib integrally formed on the inner surface of the side wall so that the central axis stands substantially in the front-rear direction from the inner surface of the front wall, and wherein the rib contacts the outer peripheral surface of the picture tube. A substantially cylindrical boss-shaped reinforcing portion that is erected from the inner surface of the front wall of the front cabinet so as to reinforce the rib at a contact portion is formed in a state of being joined to the rib, and the picture tube is attached to the reinforcing portion. Outside Television, wherein a length extending in the rear side while extending toward the plane to form a portion extending to the shortened tapered. 2. A cabinet having a front wall and a side wall, wherein the cabinet has a hollow shape bulging from the inner surface of the side wall toward the outer peripheral surface of the picture tube and abuts the outer peripheral surface, and is substantially forward and backward from the inner surface of the front wall. Forming a rib on the inner surface of the side wall so as to be erected in the direction, a picture tube positioning structure for positioning the picture tube by the rib, at a contact portion of the rib with the outer peripheral surface of the picture tube,
A picture tube positioning structure, wherein a columnar reinforcing portion connected to an inner surface of a front wall of the cabinet is formed. 3. A cabinet having a front wall and a side wall formed in a substantially semi-cylindrical shape bulging from the inner surface of the side wall toward the outer peripheral surface of the picture tube, and coming into contact with the outer peripheral surface, and from the inner surface of the front wall. A picture tube positioning structure in which a rib is formed on the inner surface of the side wall so that the center axis stands substantially in the front-rear direction, and the picture tube is positioned by the rib, and an outer peripheral surface of the picture tube at the rib In the contact area with
A picture tube positioning structure, wherein a columnar reinforcing portion connected to an inner surface of a front wall of the cabinet is formed. 4. The picture tube positioning structure according to claim 2, wherein said reinforcing portion is formed in a substantially cylindrical shape. 5. An extension portion extending toward the outer peripheral surface of the picture tube and having a tapered shortened length at the rear side is formed in the reinforcing portion. The picture tube positioning structure according to any one of claims 2 to 4. 6. The cabinet according to claim 2, wherein a second extension is formed in the hollow portion of the rib toward the side wall of the cabinet and connected to the side wall of the cabinet. 5. The picture tube positioning structure according to any one of 5.