JP3099958U - Electrical equipment cabinets and video displays - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabinet of an electric device which achieves both the strength of the cabinet and the moldability at the time of injection molding.
SOLUTION: In a television receiver 1 based on the present invention, a CRT 10 is sandwiched between a front cabinet 30 and a rear cabinet 20. The rear cabinet 20 has a housing portion 22 for receiving the CRT 10, and ribs 23a and 23b provided to protrude forward from the periphery of the front opening 22a. The ribs 23a and 23b are discontinuous at the corner 24. The top surface 21 a and the side surface 21 b of the rear cabinet 20 are connected by a reinforcing frame 25 in the housing 22. The reinforcing frame 25 has a substantially L-shaped cross section and is connected to the rear surface 21 d of the rear cabinet 20. The ends of the ribs 23a located on the top surface 21a side of the rear cabinet 20 are supported from below by reinforcing ribs.
[Selection diagram] Fig. 1

Description

The present invention relates to a cabinet of an electric device and a video display device including the same, and more specifically, to a cabinet of an electric device including a front cabinet and a rear cabinet and a video display device including the same.

A television receiver is known as an image display device having a CRT (Cathode-Ray Tube), which is a cathode ray tube, as a display unit. In general, a television receiver equipped with a CRT is manufactured with an assembly structure as shown in FIG.

As shown in FIG. 6, the CRT 10 having the video display surface 11 on the front surface is housed in the housing portion 22 of the rear cabinet 20 through a front opening 22 a provided on the front surface of the rear cabinet 20 and has a display window 32. The front part is covered by the front cabinet 30. Specifically, the ribs 23a and 23b provided on the periphery of the front opening 22a of the rear cabinet 20 are fitted to the front cabinet 30, and the rear cabinet 20 and the front cabinet 30 are fixed. As a result, the CRT 10 is supported while being sandwiched between the front cabinet 30 and the rear cabinet 20.

キ ャ ビ ネ ッ ト In such a television receiver, the cabinet must have sufficient strength against external force applied during product transportation. Usually, a television receiver is transported in a state of being packed with cardboard, styrene foam, or the like. For this reason, in the product design stage, a drop test in which a packaged product is dropped from a predetermined height and artificially applies an external force is repeatedly performed, and cabinet structure determination and material determination are performed so as to satisfy a predetermined standard. A selection is made.

When an external force is applied to the television receiver 1 having the above-described assembly structure, stress concentrates on the corner portion 24 of the rear cabinet 20 which is a fitting portion between the front cabinet 30 and the rear cabinet 20 and is provided on the rear cabinet 20. Cracks occur at the corners of the ribs 23 thus formed. For this reason, conventionally, the reinforcement against the external force has been ensured by providing some reinforcement structure to the corner portion 24.

On the other hand, Japanese Patent Application Laid-Open No. H11-215449 discloses a device which solves this problem only by making a slight change to the shape of the rib 23 located at the corner portion 24 instead of providing a reinforcing structure to the corner portion 24. There is a device disclosed in Japanese Unexamined Patent Application Publication (JP-A) No. 2000-133,036. Patent Literature 1 discloses a television receiver in which the structure of a rear cabinet in a corner region 40 surrounded by a broken line in FIG. 6 has a structure as shown in FIG. 7 and a television receiver having a structure as shown in FIG. It has been disclosed.

テ レ ビ The television receiver shown in FIG. 7 is obtained by bending the ribs at the corners 24 of the rear cabinet 20 toward the inside of the front opening 22 a of the rear cabinet 24. That is, the rib 23a located on the top surface 21a side of the rear cabinet 20 and the rib 23b located on the side surface 21b side of the rear cabinet 20 are connected by the L-shaped rib 23c.

The television receiver shown in FIG. 8 has a structure in which ribs 23a and 23b are partially omitted at a corner portion 24 of a rear cabinet 20.

By using a television receiver with a rear cabinet of these shapes, direct contact between the front cabinet and the ribs of the rear cabinet at the corners can be avoided. Concentration of stress on the ribs of the section is avoided, and as a result, damage to the cabinet is prevented.

However, when the cabinet structure shown in FIGS. 7 and 8 is employed, there is a problem that the damage prevention effect decreases as the weight of the television receiver itself increases. That is, in a light and small television receiver having a relatively small screen size, the cabinet structure is effectively prevented from being damaged, whereas a large television receiver having a relatively large screen size, In the case of a relatively heavy TV receiver such as a video recorder integrated TV receiver or a DVD (Digital Versatile Disc) player integrated TV receiver, even if the above structure is used, the bent portion and the end of the rib may be damaged. Sometimes happened. This is considered to be caused by insufficient strength of the rib itself, and it is necessary to employ some kind of reinforcing structure in a large-sized television receiver which is relatively heavy.

However, if a complicated reinforcing structure is employed to improve the strength at the corners of the rear cabinet, difficulties arise in terms of formability. That is, the rear cabinet is often integrally formed by injection molding using a resin material as a raw material. At this time, if the shape of the corner portion of the rear cabinet is complicated, heat leakage occurs in this portion. Therefore, it takes a long time to cool down compared with other parts, and there is a concern that productivity may be significantly deteriorated. In addition, when the shape of the corner portion becomes complicated, there is a high possibility that molding defects will occur, and there is a concern that the yield will be significantly reduced.
JP-A-11-215449

An object of the present invention is to provide a cabinet of an electric device in which both the strength of the cabinet and the moldability during injection molding are achieved, and an image display device provided with the cabinet.

An image display device according to the present invention includes a CRT for displaying an image, a front cabinet covering a front portion of the CRT, and a rear cabinet covering a rear portion of the CRT, and the CRT is sandwiched between the front cabinet and the rear cabinet. A video display device comprising: The rear cabinet includes a receiving portion including a front opening for receiving a CRT, and a rib provided to protrude forward from a periphery of the front opening and fitted with the front cabinet. The rib is discontinuous at the corner of the front opening. The top surface and the side surfaces of the rear cabinet are connected by a reinforcing frame in the accommodation portion. The reinforcing frame has a substantially L-shaped cross section in a plane parallel to the plane including the front opening, and is connected to the rear surface of the rear cabinet. The ends of the ribs located on the top side of the rear cabinet are supported from below by reinforcing ribs.

As described above, the top surface and the side surfaces of the rear cabinet are connected to each other by the reinforcing frame in the housing portion, and the reinforcing frame extends to the rear surface of the cabinet, whereby the strength of the corner portion is greatly improved. Further, by supporting the ends of the ribs on the top surface with the reinforcing ribs, the strength of the ribs on the top surface is also improved. As a result, the impact resistance at the corner of the front opening is greatly improved, and the cabinet is prevented from being damaged. Further, by adopting the above-mentioned reinforcing structure, the shape of the corner portion can be prevented from being complicated, so that the moldability at the time of injection molding is improved, and there is no possibility that heat is generated. Therefore, compatibility between the strength of the cabinet and the moldability during injection molding can be achieved.

A cabinet for an electric device according to the present invention includes a front cabinet that covers the front of the electric device, and a rear cabinet that covers the rear of the electric device, and is a cabinet of an electric device in which the front cabinet and the rear cabinet are fitted. is there. The rear cabinet includes a receiving portion including a front opening for receiving internal components, and a rib protruding forward from a peripheral edge of the front opening and fitted with the front cabinet. At the corner of the front opening, the rib is discontinuous. The top surface and the side surfaces of the rear cabinet are connected by a reinforcing frame in the accommodation portion. The ends of the ribs located on the top side of the rear cabinet are supported from below by reinforcing ribs.

By connecting the top surface and the side surfaces of the rear cabinet with the reinforcing frame in the housing portion, the strength of the corner portion is improved. Further, by supporting the ends of the ribs on the top surface with the reinforcing ribs, the strength of the ribs on the top surface is also improved. As a result, the impact resistance at the corner of the front opening is improved, and the cabinet is prevented from being damaged. Further, by adopting the above-mentioned reinforcing structure, the shape of the corner portion can be prevented from being complicated, so that the moldability at the time of injection molding is improved, and there is no possibility that heat is generated. Therefore, compatibility between the strength of the cabinet and the moldability during injection molding can be achieved.

In the electric equipment cabinet according to the present invention, it is preferable that the reinforcing frame is connected to the rear surface of the rear cabinet.

By thus extending the reinforcing frame to the back of the cabinet, it becomes possible to release the external force applied to the corner portion to the back of the cabinet, so that the impact resistance is further improved.

In the electric appliance cabinet according to the present invention, it is preferable that the cross-sectional shape of the reinforcing frame in a plane parallel to the plane including the front opening is substantially L-shaped.

Thus, since the cross-sectional shape of the reinforcing frame is substantially L-shaped, the structure is simplified, and the moldability during injection molding is improved.

、 In the cabinet of the electric device according to the present invention, it is preferable that the end of the rib located on the side surface of the rear cabinet is supported from the side by the reinforcing rib.

強度 In this way, by supporting the end of the side rib by the reinforcing rib, the strength of the side rib is improved. As a result, the impact resistance at the corner of the front opening is improved, and the cabinet is prevented from being damaged.

内部 In the cabinet of the electric device according to the present invention, the internal component is, for example, a CRT.

With this configuration, even when a heavy object such as a CRT is installed inside the cabinet, the impact resistance of the cabinet is maintained at a high level, so that the cabinet is prevented from being damaged.

According to the present invention, it is possible to provide a cabinet of an electric device and a video display device equipped with the cabinet, which achieve both the strength of the cabinet and the moldability during injection molding, and provide a highly reliable product at a low price. It becomes possible to do.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following embodiments, a television receiver will be described as an example of the electric apparatus.

FIG. 1 is a schematic perspective view showing an assembling structure of the television receiver according to the embodiment of the present invention. First, with reference to FIG. 1, a description will be given of an assembling structure of a television receiver according to the present embodiment.

As shown in FIG. 1, the television receiver 1 according to the present embodiment includes a CRT 10 for displaying an image, and a front cabinet 30 and a rear cabinet 20 that are casings that cover the CRT 10 as internal components. ing.

The CRT 10 has an image display surface 11 for displaying an image on its front surface.

The rear cabinet 20 has a housing portion 22 including a front opening 22a for receiving the CRT 10, and has a box shape including a top surface 21a, side surfaces 21b, a bottom surface 21c, and a back surface 21d. On the periphery of the front opening 22a of the rear cabinet 20, ribs 23a and 23b formed to protrude forward are located. Among them, the rib 23a is a rib provided on the top surface 21a side, and the rib 23b is a rib provided on the side surface 21b side. These ribs 23a and 23b are parts that fit with the front cabinet 30 and also function to guide the fitting of the front cabinet 30 and the rear cabinet 20 during assembly.

The front cabinet 30 has a box shape with a rear opening, and a display window 32 for exposing the video display surface 11 of the built-in CRT 10 is provided on the front surface.

The CRT 10 is accommodated in the accommodating portion 22 of the rear cabinet 20 through a front opening 22a provided on the front surface of the rear cabinet 20, and its front portion is covered by the front cabinet 30. That is, the CRT 10 is supported while being sandwiched between the front cabinet 30 and the rear cabinet 20. In this state, the video display surface 11 located on the front of the CRT 10 is exposed through a display window 32 provided in the front cabinet 30.

FIG. 2 is a perspective view showing a shape of a corner portion of the rear cabinet of the video display device according to the present embodiment, and is an enlarged view of corner area 40 shown in FIG. FIG. 3 is a view of the corner portion viewed from the front, and FIG. 4 is a view of the corner portion viewed from the side. With reference to FIGS. 2 to 4, the structure of the corner portion of the rear cabinet of the television receiver in the present embodiment will be described in detail.

As shown in FIGS. 2 to 4, in the corner portion 24 of the rear cabinet 20, the ribs 23 a and 23 b provided on the periphery of the above-described front opening 22 a are discontinuous. That is, the rib 23a located on the top surface 21a side of the rear cabinet 20 and the rib 23b located on the side surface 21b side of the rear cabinet 20 are divided. The top surface 21a of the rear cabinet 20 and the side surface 21b of the rear cabinet 20 are connected by a reinforcing frame 25 in the accommodation portion 22 adjacent to the corner portion 24.

The reinforcing frame 25 has an L-shaped cross section in a plane parallel to the plane including the front opening 22a of the rear cabinet 20. The reinforcing frame 25 extends rearward from the surface including the front opening 22a in the housing portion 22 of the rear cabinet 20, reaches the rear surface 21d of the rear cabinet 20, and is connected to the rear surface 21d. The reinforcing frame 25 is integrally formed so as to be connected to the top surface 21a, the side surface 21b, and the back surface 21d during the injection molding of the rear cabinet 20.

リ ブ A rib 23a located on the top surface 21a side of the rear cabinet 20 has its end supported by a reinforcing rib 26a from below. The reinforcing rib 26a extends from the reinforcing frame 25 to the lower surface of the rib 23a located on the top surface 21a side of the rear cabinet 20, and reinforces the rib 23a. The reinforcing ribs 26a are formed integrally with other parts of the rear cabinet 20 during the injection molding of the rear cabinet 20.

As described above, in the television receiver 1 according to the present embodiment, the top surface 21 a, the side surface 21 b, and the back surface 21 d of the rear cabinet 20 are connected to each other in the housing 22 by the reinforcing frame 25 at the corner 24 of the rear cabinet 20. ing. With this configuration, the stress applied to the corner portion 24 is distributed to the respective surfaces 21a, 21b, 21d of the rear cabinet 20, so that the impact resistance is greatly improved.

As described above, the television receiver 1 according to the present embodiment has a configuration in which the ribs 23a and 23b are missing at the corners. Therefore, the stress applied to the corner portion 24 is prevented from being concentrated on the ribs 23a, 23b, and the ribs 23a, 23b are prevented from being damaged. Further, in television receiver 1 of the present embodiment, the end of rib 23a located on top surface 21a side is supported by reinforcing rib 26a. For this reason, the stress applied to the rib 23a is also distributed to the reinforcing frame 25 via the reinforcing rib 26a, so that the rib 23a is prevented from being damaged.

As described above, in the television receiver according to the present embodiment, the impact resistance at the corners of the rear cabinet is significantly improved, so that breakage of the cabinet is effectively prevented. Further, since the shape of the corner portion is prevented from being complicated, the moldability at the time of injection molding is improved, and there is no possibility that heat is generated. Therefore, compatibility between the strength of the cabinet and the moldability during injection molding can be achieved.

(Confirmation of effect by drop test in packed state)
In order to compare the impact resistance of the television receiver having the rear cabinet structure in the above-described embodiment with the impact resistance of the television receiver having the conventional rear cabinet structure, the inventor of the present invention has proposed a method of dropping in a packaged state. The test was performed. The test conditions and test results are shown below.

As a sample, a DVD player-integrated television receiver having the rear cabinet structure according to the above-described embodiment (Example) and a video recorder-integrated television receiver having the conventional rear cabinet structure shown in FIG. Example) was prepared. Each of these samples is a television receiver equipped with a 19-inch CRT, and the weight is almost the same. As a test device, a swinger-type drop test device was used, and the sample was dropped from a position at a height of 60 cm toward the floor. The test samples to be dropped are all packed in a cardboard box using polystyrene foam as an impact buffer. In addition, as a drop test, a so-called single-beam three-beam drop test in which a specific corner of a cardboard box collides with a floor surface was employed.

Table 1 shows the results of the drop test performed under the above conditions.

示 す As shown in Table 1, in the video recorder integrated television receiver having the conventional rear cabinet structure (comparative example), breakage of the ribs of the rear cabinet was confirmed in each case. On the other hand, in the DVD player-integrated television receiver having the rear cabinet structure according to the above-described embodiment (Example), no damage was confirmed in the cabinet including the ribs in any case. As described above, it has been confirmed that by employing the rear cabinet structure of the above-described embodiment, the impact resistance is significantly improved as compared with the related art.

In the above-described embodiment, as shown in FIG. 2, the case where the reinforcing rib 26a for reinforcing is provided only on the rib 23a provided on the top surface 21a side of the rear cabinet 20 is illustrated. As shown in FIG. 5, a rib 23b provided on the side surface 21b of the rear cabinet 20 may be provided with a reinforcing rib 26b for reinforcing the rib 23b from the side. With this configuration, the impact resistance is further improved, and the strength of the cabinet against external force is improved.

Further, in the above-described embodiment, as shown in FIG. 2, the case where the reinforcing rib 26a has a shape that reaches only to the intermediate position of the reinforcing frame 25 is illustrated, but in particular, the reinforcing rib 26a has such a shape. The shape is not limited, and may be, for example, a shape that reaches the bent portion of the reinforcing frame 25.

In addition, the present invention is not applied only to a video display device such as a television receiver, a television recorder integrated with a video recorder, a television receiver integrated with a DVD player, and a monitor for a personal computer. The present invention can be applied to any electric device provided inside the cabinet.

As described above, the above-described embodiments disclosed herein are illustrative in all aspects and are not restrictive. The technical scope of the present invention is defined by the claims of the utility model registration, and includes all modifications within the meaning and scope equivalent to the description of the claims of the utility model registration.

FIG. 2 is a schematic perspective view showing an assembling structure of the television receiver in the embodiment of the present invention. It is a perspective view which shows the shape of the corner part of the rear cabinet of the television receiver in this Embodiment. FIG. 3 is a front view of a corner portion of the rear cabinet shown in FIG. 2. FIG. 3 is a side view of a corner portion of the rear cabinet shown in FIG. 2. It is a perspective view of a corner part of a rear cabinet showing a modification of a television receiver in an embodiment of the present invention. It is a schematic perspective view which shows the assembly structure of a general television receiver. It is a perspective view which shows the structure of the corner part of the rear cabinet of the television receiver in the prior art example. It is a perspective view which shows the other structure of the corner part of the rear cabinet of the television receiver in the prior art example.

Explanation of reference numerals

1 TV receiver, 10 CRT, 11 video display surface, 20 rear cabinet, 21 a top surface, 21 b side surface, 21 c bottom surface, 21 d back surface, 22 storage space, 22 a front opening, 23 a, 23 b rib, 24 corner portion, 25 reinforcement frame , 26a, 26b {reinforcing ribs, 30} front cabinet, 32} display window.

Claims (6)

A CRT (10) for displaying an image, a front cabinet (30) covering a front portion of the CRT (10), and a rear cabinet (20) covering a rear portion of the CRT (10); 10) An image display device sandwiched between the front cabinet (30) and the rear cabinet (20),
The rear cabinet (20) is provided with a housing part (22) including a front opening (22a) for receiving the CRT (10), and is provided so as to protrude forward from a periphery of the front opening (22a). (30) and mating ribs (23a, 23b),
At the corner (24) of the front opening (22a), the ribs (23a, 23b) are discontinuous,
A top surface (21a) and a side surface (21b) of the rear cabinet (20) are connected by a reinforcing frame (25) in the accommodation portion (22),
The reinforcing frame (25) has a substantially L-shaped cross section in a plane parallel to a plane including the front opening (22a), and is connected to a rear surface (21d) of the rear cabinet (20).
An image display device, wherein a rib (23a) located on the side of the top surface (21a) of the rear cabinet (20) is supported from below by a reinforcing rib (26a). An electric device comprising a front cabinet (30) covering a front portion of an electric device and a rear cabinet (20) covering a rear portion of the electric device, wherein the front cabinet (30) and the rear cabinet (20) are fitted. An equipment cabinet,
The rear cabinet (20) is provided with a receiving portion (22) including a front opening (22a) for receiving internal components, and is provided so as to protrude forward from a periphery of the front opening (22a), and is provided with the front cabinet (30). ) And mating ribs (23a, 23b),
At the corner (24) of the front opening (22a), the ribs (23a, 23b) are discontinuous,
A top surface (21a) and a side surface (21b) of the rear cabinet (20) are connected by a reinforcing frame (25) in the accommodation portion (22),
A cabinet for electrical equipment, wherein a rib (23a) located on the top surface (21a) side of the rear cabinet (20) has its end supported from below by a reinforcing rib (26a). The electrical equipment cabinet according to claim 2, wherein the reinforcing frame (25) is connected to a rear surface (21d) of the rear cabinet (20). 4. The cabinet for an electric device according to claim 2, wherein a cross-sectional shape of the reinforcing frame (25) in a plane parallel to a plane including the front opening (22 a) is substantially L-shaped. The rib (23b) located on the side (21b) side of the rear cabinet (20), the end of which is supported from the side by a reinforcing rib (26b). Cabinet of electrical equipment. The cabinet of an electric device according to any one of claims 2 to 5, wherein the internal component is a CRT (10).

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