JP2000209527A - Image display device and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device that prevents fluctuation in a picture attended with vibration from a speaker. SOLUTION: An enclosure 1 consists of a front cabinet 1F and a rear cabinet 1R. A box 4 is a sound guide type speaker 45 in which a speaker 5 is contained. The box 4 is supported by the front cabinet 1F in a tentatively fixed state by a catch 7, a hook 10 and a rib 11. The rear cabinet 1R, is fitted to the front cabinet 1F and a nut is tightened to a stud 8 projected from the rear cabinet 1R, to support the box 4 in a fixed state by the stud 8, the nut and a rib 13 and to release the tentative fixed state of the box 4 from the front cabinet 1F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus comprising a cabinet having a front cabinet and a rear cabinet, and a box having a speaker mounted in the cabinet, and a method of assembling the same.

[0002]

2. Description of the Related Art FIG. 6 is a plan view showing an example of a conventional image display device. Here, a television receiver using a cathode ray tube will be described as an image display device. In FIG. 6, the television receiver forms a housing 1 by a front cabinet 1F and a rear cabinet (not shown).

[0003] A cathode ray tube (CRT) 2
Is stored. CRT2 is front cabinet 1F
Is fixed to the CRT mounting portion 3 with screws or the like. In addition,
In FIG. 1, the illustration of the CRT mounting part 3 on the left side in the figure is omitted for simplification. The CRT mounting part 3 is
Corners.

Further, a speaker 5 is provided inside the housing 1.
Is mounted. The box 4 containing the speakers 5 is called a sound tube type speaker.
The box 4 containing the speaker 5 is replaced with the sound conduit type speaker 4
It will be referred to as 5. The sound conduit speaker 45 is fixed to the speaker mounting portion 6 of the front cabinet 1F with screws or the like. The speaker mounting part 6 is located near the CRT mounting part 3. In FIG. 1, the illustration of the sound conduit speaker 45 and the speaker mounting portion 6 on the right side in the figure is omitted for simplification.

[0005]

In the conventional television receiver described above, the sound tube type speaker 45 is mounted on the front cabinet 1F. It is easy to transmit to the front cabinet 1F via the speaker mounting part 6.
The vibration transmitted to the front cabinet 1F is also transmitted to the CRT 2. At this time, since the vibration transmission path from the speaker 5 to the CRT 2 is very short, the amount of vibration attenuation is extremely small. Therefore, the shadow mask 2a of the CRT 2 also vibrates.

In particular, in recent years, there has been a demand for an improvement in the sound quality of television receivers.
Sound output tends to increase. As the sound output of the speaker 5 increases, the vibration of the shadow mask 2a also increases. The CRT 2 is vulnerable to vibration due to its structure. When the shadow mask 2a vibrates, the image is liable to shake, so that it is difficult to increase the output of the sound of the speaker 5. This problem occurs not only in the sound tube type speaker 45 but also in a non-sound tube type speaker mounted on a box so that the speaker faces the outside.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has an image display in which a housing is constituted by a front cabinet and a rear cabinet, and a box with a speaker is mounted in the housing. It is an object of the present invention to provide an image display device capable of preventing an image from shaking due to vibration from a speaker.
Furthermore, in addition to this, a housing is configured by the front cabinet and the rear cabinet, and inside the housing,
An object of the present invention is to provide an assembling method that does not reduce workability when assembling an image display device in which a box with a speaker is mounted.

[0008]

According to the present invention, in order to solve the above-mentioned problems of the prior art, (a) a housing (1) is constituted by a front cabinet (1F) and a rear cabinet (1R). In an image display apparatus comprising a box (4) having a speaker (5) mounted in a housing thereof, a temporary fixing means (7, 7) for holding the box in a temporarily fixed state with respect to the front cabinet.
10, 11), while the box is held fixed to the rear cabinet and the box is fixed to the rear cabinet, the box is temporarily fixed by the temporary fixing means with respect to the front cabinet. Fixing means for releasing the fixation (8, 13, 1
5) is provided, wherein (b) a housing (1) is constituted by a front cabinet (1F) and a rear cabinet (1R), and is provided in the housing. In a method for assembling an image display device comprising a box (4) to which a speaker (5) is attached, in a state where the front cabinet and the rear cabinet are separated, the box is temporarily fixed to the front cabinet. A first step of holding the rear cabinet, the second step of attaching the rear cabinet to the front cabinet to form the housing, and holding the box in a fixed state with respect to the rear cabinet, In a state where the box is fixed to the rear cabinet, the front cabinet of the box according to the first step is Against there is provided a method of assembling an image display device characterized by comprising a third step of releasing the temporary fixing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an image display device and a method of assembling the same according to the present invention will be described with reference to the accompanying drawings.
1 to 4 are plan views showing an embodiment of the image display device and the method of assembling the same according to the present invention, and FIG. 5 is a plan view showing a comparative example of the image display device and the method of assembling the present invention. In addition,
1 to 5, the same parts as those in FIG. 6 are denoted by the same reference numerals. 1A is a partial plan view of the image display device of the present invention viewed from the front side, FIG. 1B is a partial plan view of the image display device of the present invention viewed from the side, and FIG. FIG. 2 is a partial plan view of the image display device of the present invention as viewed from the rear side. 1 to 4 show an assembly procedure (assembly method) of the image display device of the present invention.

In this embodiment, a television receiver using a cathode ray tube (CRT) will be described as an image display device. As shown in FIG. 1B, the television receiver forms a housing 1 by a front cabinet 1F and a rear cabinet 1R. FIG. 1 shows a state before the front cabinet 1F and the rear cabinet 1R are integrated.

The casing 1 has a C (not shown).
The box 4 in which the RT is housed and the speaker 5 is housed is mounted in the procedure described in detail below. The box 4 containing the speakers 5 is referred to as a sound conduit type speaker 45. As shown in FIG. 1B, the sound conduit speaker 4
An annular hook 7 is provided integrally or separately with the box 4 on the upper surface of the box 5. Sound conduit speaker 4
A threaded stud 8 is fitted in the rear surface of the thread 5. A connector cable 9 is connected to the speaker 5.

On the front cabinet 1F, a hook 10 having a substantially J (or L) shape is provided integrally with or separately from the front cabinet 1F. A plurality (for example, four) of plate-like ribs 11 are provided below or below the hook 10 integrally with or separately from the front cabinet 1F. The hook 7 of the sound conduit speaker 45 is hooked from above on the hook 10 of the front cabinet 1F. A circuit board 12 is attached to the bottom surface of the front cabinet 1F, and the connector cable 9 is connected to the circuit board 12.

In this state, the four ribs 11 support the lower part of the tip of the sound conduit speaker 45. A slant 11 a is formed at a corner of the rib 11 on the sound conduit type speaker 45 side. As shown in FIG.
The center two ribs 11 of the four ribs 11 support the lower portion of the sound conduit speaker 45, and the outer two ribs 11
Supports the side of the sound conduit speaker 45 to regulate the position. FIG. 1A shows a state in which the sound tube type speaker 45 is viewed from the front except for the front cabinet 1F. The front end of the sound tube type speaker 45 has an opening for outputting sound from the speaker 5. It is a part 45a.

The rear cabinet 1R is provided with a plurality (for example, four) of plate-like ribs 13 shaped to follow the rear surface of the sound conduit speaker 45, either integrally with or separately from the rear cabinet 1R. ing. In the rear cabinet 1R, an elliptical hole 14 through which the stud 8 of the sound conduit speaker 45 is inserted is formed. In a state where the sound conduit type speaker 45 is temporarily fixed to the front cabinet 1F by engagement of the hook portion 7 with the hook 10 and holding by the rib 11, as shown in FIG. 1C, the stud 8 is attached to the rear cabinet 1R. At the hole 14 formed at the bottom. In FIG. 1 (C), for ease of understanding, the ribs 13 except for the rear cabinet 1R are shown.
And holes 14 are illustrated.

Next, the procedure for assembling the television receiver of the present invention will be described. As shown in FIG. 1 (B), when the hook 7 of the sound tube type speaker 45 is hooked on the hook 10, a moment around the arrow acts because the speaker 5 becomes almost the center of gravity, and the lower end of the sound tube type speaker 45 is lower. The sound conduit speaker 45 is stopped by the frictional force generated between the sound conduit speaker 45 and the inclination 11a of the rib 11, and the temporary fixing of the sound conduit speaker 45 is completed. Hook 7, hook 10,
The rib 11 is temporary fixing means for holding the sound conduit speaker 45 in a temporarily fixed state only with the front cabinet 1F.
In this state, the connector cable 9 for audio input to the speaker 5 is connected to the circuit board 12.

As shown in FIG. 2, in order to mount the rear cabinet 1R to the front cabinet 1F, when the rear cabinet 1R is gradually approached in the direction of the sound tube type speaker 45, the studs 8 of the sound tube type speaker 45 are rearward. The ribs 13 are inserted into the holes 14 of the cabinet 1 </ b> R, and the ribs 13 push up the rear portion of the speaker 45. Then, the lower end of the tip of the sound conduit speaker 45 rises along the slope 11 a of the rib 11.

FIG. 3 shows a state in which the rear cabinet 1R has reached a position where it is fitted to the front cabinet 1F. In this state, the sound conduit type speaker 45 is still slightly lowered. When the nut 15 is screwed into the stud 8 projecting rearward from the rear cabinet 1R, as shown in FIG. 4, the rear part of the sound tube type speaker 45 is fitted into the four ribs 13 and the stud is formed. The sound conduit speaker 45 is fixed to the rear cabinet 1 </ b> R by screwing the nut 15 to 8.

In this state, the central axis of the sound conduit type speaker 45 coincides with the central axis 16 of the audio output opening of the front cabinet 1F. Furthermore, the sound conduit speaker 45 is
In a state where the nut 15 is screwed to the stud 8 and fixed to the rear cabinet 1 </ b> R by the rib 13, the hook 7 is not in contact with the hook 10, and the sound conduit speaker 45
And the ribs 11 are also in non-contact. Therefore, the sound conduit speaker 45 is independent of the front cabinet 1F. The screwing of the nut 15 to the stud 8 and the rib 13 hold the sound conduit type speaker 45 in a state in which the sound conduit type speaker 45 is finally fixed only by the rear cabinet 1R, and to the front cabinet 1F by the hook 7, the hook 10, and the rib 11. This is a fixing means for releasing the temporary fixing.

In this embodiment, the gap formed between the front cabinet 1F and the front end of the sound conduit type speaker 45 is closed by a closed-cell type cushioning material 17 to prevent a decrease in sound pressure. The cushioning material 17 is not limited to the closed-cell type, and may be any type of cushioning material that does not have air circulation, similar to the closed-cell type. Even if the front cabinet 1F and the sound conduit type speaker 45 come into indirect contact with each other via the cushioning material 17, the vibration generated with the audio output of the speaker 5 is hardly transmitted to the front cabinet 1F.

In the present invention, in the state where the housing 1 is formed by the front cabinet 1F and the rear cabinet 1R according to the above configuration, the sound tube speaker 45 is held only by the rear cabinet 1R. Therefore, the vibration generated with the audio output of the speaker 5 is generated by the front cabinet 1F.
And a vibration transmission path for transmitting the vibration to a CRT (not shown) is very long. Therefore, the amount of vibration attenuation becomes extremely large, the shadow mask of the CRT hardly vibrates, and the image does not easily shake. Therefore, it is possible to realize high output of the sound of the speaker 5.

FIG. 5 is a comparative example of the present invention, in which no provisional fixing means for holding the sound tube type speaker 45 to the front cabinet 1F is provided, and the sound tube type speaker 45 is simply fixed to the rear cabinet 1R. It is composed.
Thus, in the manufacturing process of the television receiver, the front cabinet 1F and the rear cabinet 1R
Are separated from the connector cable 9 of the speaker 5.
Must be much longer than before. Then, the long and loose connector cable 9 deteriorates the workability of manufacturing or assembling the television receiver.

On the other hand, in the present invention, since the temporary fixing means for holding the sound pipe type speaker 45 in the front cabinet 1F is provided, the connector cable is held in a state where the sound pipe type speaker 45 is held in the front cabinet 1F. 9 can be connected to the circuit board 12. Therefore, the connector cable 9 may have the minimum necessary length as in the related art, and the workability is not deteriorated.

In this embodiment, the configuration using the sound tube type speaker 45 in which the speaker 5 is housed inside the box 4 is shown. However, the speaker is a non-sound tube type speaker mounted on the box so as to face the outside. Alternatively, the present invention can be used for all configurations in which a speaker is attached to a box. In this embodiment, a television receiver using a CRT has been described as an example of an image display device. However, the present invention may be applied to other image display devices using a CRT, for example, a monitor device or a display device. Can be. Furthermore, the present invention can be used for other image display devices not using a CRT, for example, a projection type image display device.

[0024]

As described above in detail, according to the image display apparatus and the method of assembling the same according to the present invention, the box to which the speaker is attached is held in a state temporarily fixed to the front cabinet, and the box is attached to the rear cabinet. In a state where the box is fixed to the rear cabinet while the box is fixed to the rear cabinet, the temporary fixing of the box to the front cabinet by the temporary fixing means is released, so that the image shakes due to vibration from the speaker. Can be prevented. Therefore, according to the present invention, high output of the sound of the speaker can be easily realized without deteriorating the image quality.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is a plan view showing one embodiment of the present invention.

FIG. 5 is a plan view showing a comparative example with the present invention.

FIG. 6 is a plan view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 1F Front cabinet 1R Rear cabinet 4 Box 5 Speaker 7 Hook (temporary fixing means) 8 Stud (fixing means) 9 Connector cable 10 Hook (temporary fixing means) 11 Rib (temporary fixing means) 11a Slant 12 Circuit board 13 Rib (fixing means) 14 Hole 15 Nut (Fixing means) 16 Center shaft 17 Buffer material 45 Sound conduit speaker 45a Opening

Claims (2)

[Claims] 1. An image display device comprising a front cabinet and a rear cabinet, wherein a cabinet is formed, and a box with a speaker is mounted in the cabinet. The box is temporarily fixed to the front cabinet. Temporary fixing means for holding the box in a state fixed to the rear cabinet, and in a state where the box is fixed to the rear cabinet, the box is fixed by the temporary fixing means. An image display device comprising: fixing means for releasing temporary fixing to a front cabinet. 2. A method for assembling an image display apparatus comprising a front cabinet and a rear cabinet, wherein a cabinet is formed, and a box with a speaker is mounted in the cabinet. A first step of holding the box in a temporarily fixed state with respect to the front cabinet, and a second step of attaching the rear cabinet to the front cabinet to form the housing; While holding the box in a fixed state with respect to the rear cabinet, and in a state in which the box is fixed with respect to the rear cabinet, releasing the temporary fixing of the box to the front cabinet in the first step is performed. 3. A method for assembling an image display device, comprising the steps of: