JP5260950B2 - Television receiver - Google Patents

Abstract

The invention provides a television picture receiver capable of preventing the thermal damage of liquid crystal panel and loudspeaker and making the device thin. In addition, the television picture receiver makes the user easily hear the sound with narrower directionality. The television picture receiver comprises a sound box (5) outputting the sound in a chassis (2), and a substrate (8) as heating body. The sound box (5) is set at the side direction of the substrate (8) and offsets the heat movement path from the substrate (8). Thus the sound box (5) is prevented from being damaged by the heat from the substrate (8). The sound box (5) is used for outputting the low frequency stage sound. Loudspeakers (6,6) for outputting the high-middle frequency are set on the front surface of the chassis(2).

Description

  The present invention relates to a television receiver including a speaker device.

  Conventionally, a television receiver including a speaker device is well known. The applicant has also proposed the television receiver (1) disclosed in FIG. 5 (see Patent Document 1). This relates to a television receiver (1) having a thin liquid crystal panel, and is provided with cylindrical speaker devices (90) (90) on both sides of a projection (9) provided on the back of a cabinet (2). . All sounds in the low, middle, and high frequencies are output from the upper or lower end of the speaker device (90) (90).

JP 2007-235283 A

Such a television receiver is required to be further thinned. In the television receiver (1) shown in FIG. 5, the thickness is increased by the protrusion (9). Therefore, if the speaker device (90) is housed in the cabinet (2), it can contribute to a reduction in thickness. However, if the speaker device (90) is thinned, sufficient sound quality and volume cannot be ensured.
The cabinet (2) contains power supply boards and inverter circuit boards for the backlight of the liquid crystal panel. The heat generated from these boards causes the board itself, the liquid crystal panel, and the speaker device (90) to move. There is a risk of thermal damage. In particular, if the speaker device (90) is large and occupies a large area in the cabinet (2), it becomes a factor that inhibits heat radiation from the cabinet (2).
In general, sound has a low directivity due to its long wavelength in the low frequency band, and the directivity becomes stronger as the sound goes higher. Therefore, it is necessary to output the high-mid range sound having a narrow directivity toward the viewer in front of the cabinet (2).
An object of the present invention is to reduce the thickness of the entire device while preventing thermal damage to the substrate, the liquid crystal panel, and the speaker device. At the same time, it is also an object to make it easier for the viewer to listen to sounds with narrow directivity.

The television receiver (1) houses in a cabinet (2) a display panel (3) for displaying images, a speaker box (5) for outputting sound, and a substrate (8) as a heating element. Speaker box (5), the rear surface of the display panel (3), which and is disposed between the substrate (8) substrate into and out from the heat transition passage (82) (8) (82), the substrate (8) (82 ) thermal transition passage of release from is not inhibited in the speaker box (5).
The speaker box (5) is for low-frequency audio output, and high-midrange output speakers (6) and (6) are provided on the front surface of the cabinet (2).

1. The speaker box (5) is housed in the cabinet (2), and the entire television receiver can be made thinner.
The circuit board, which is a heating element in the cabinet (2), is located on the side of the speaker box (5), and the speaker box (5) is removed from the heat transfer path from the circuit board. Does not impede heat dissipation. Thereby, while preventing a liquid crystal panel, a board | substrate, and a speaker box (5) from a possibility of receiving heat damage, a speaker box (5) can be enlarged as much as possible and high sound quality and a high sound volume can be ensured.
2. The low frequency sound with low directivity is output from the speaker box (5) housed in the cabinet (2), and the directivity is output from the speakers (6) and (6) provided in front of the cabinet (2). Sharp high-mid range sound is output. Thereby, the audio | voice of all the bands can be reached to a viewer efficiently.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view of a television receiver (1) according to this example, and FIG. 2 is a front view of the same. In the following description, the direction facing the viewer is the front and the reverse direction is the rear. This relates to a thin television receiver using a liquid crystal panel, and is provided with speakers 6 and 6 for high and mid range sound at the lower end of the cabinet 2 and on both sides of the front. Since the speakers (6) and (6) face the viewer, high-mid range sounds can easily reach the viewer.
The cabinet (2) is configured by combining a frame (20) in which a display panel (3), which is a liquid crystal panel, is fitted with a cover body (4) in which a circuit board is accommodated. From the side surface of the cover body (4), a terminal group (10) such as an external input is exposed.

3 is a rear view showing the internal configuration of the cabinet (2), and FIG. 4 is an exploded perspective view of FIG. For convenience of explanation, FIG. 3 shows the cover body (4) removed. Two vertical bars (75) and (75) that are substantially parallel to each other are attached to the back surface of the display panel (3), and a circuit support plate (7) is provided across the vertical bars (75) and (75). . The circuit support plate (7) is made of metal such as iron, and is bent from the first plate (70) substantially parallel to the back surface of the display panel (3) and the right end of the first plate (70). A second plate member (71) extending rearward is integrally formed. The terminal group (10) is attached to the outer side surface of the second plate (71).
The low-frequency speaker box (5) is attached to the left vertical bar (75) among the vertical bars (75) and (75) via a buffer member (not shown) such as a rubber piece. The speaker box (5) is a baffled box and has a well-known configuration including a woofer speaker (50) for outputting low-frequency sound and a sound pressure adjusting port or duct (51). The reason why the speaker box (5) is attached to the vertical bar (75) via a buffer member is to prevent vibration during low-frequency reproduction from being directly transmitted to the display panel (3) or a circuit board described later.
In this example, since the speaker box (5) is housed in the cabinet (2), it is possible to reduce the thickness of the entire television receiver.

As shown by the one-dot chain line in FIG. 3, on the first plate (70), on the side of the speaker box (5), there is a circuit board (8), specifically a power supply board (80) and an image processing board. A substrate (81) is provided. Both substrates (80), (81) are provided substantially parallel to the back surface of the display panel (3). As is well known, the display panel (3) is illuminated by a backlight (not shown), and an inverter circuit board (82) for the backlight is provided on the left side of the speaker box (5). . The inverter circuit board (82) is also provided substantially parallel to the back surface of the display panel (3).
The power supply substrate (80), the image processing substrate (81), and the inverter circuit substrate (82) generate heat during use, but the heat rises and is opened at the upper end of the cover body (4) ( 40) to the outside of the cabinet (2). Since the speaker box (5) is disposed on the side of the substrates (80), (81), and (82), it does not hinder heat radiation from the substrates (80), (81), and (82). This prevents the liquid crystal panel, the substrate, and the speaker box (5) from being damaged by heat. The sound of the speaker box (5) is output from the sound emission hole (41) opened in the cover body (4). As described above, the speaker box (5) outputs low-frequency sound with low directivity. Therefore, the low frequency sound goes around to the front of the cabinet (2) and reaches the viewer located in front of the cabinet (2).

This example has the following effects.
1. The speaker box (5) is housed in the cabinet (2), and the entire television receiver can be made thinner.
2. The circuit board which is a heating element in the cabinet (2), that is, the power supply board (80), the image processing board (81), and the inverter circuit board (82) are located on the side of the speaker box (5). Thus, the speaker box (5) is removed from the heat transfer path from the substrates (80), (81), and (82), and does not hinder heat radiation from the substrates (80), (81), and (82). Thereby, while preventing a liquid crystal panel, a board | substrate, and a speaker box (5) from a possibility of receiving heat damage, a speaker box (5) can be enlarged as much as possible and high sound quality and a high sound volume can be ensured.
3. The speaker box (5) housed in the cabinet (2) outputs low-frequency sound with wide directivity, and the speakers (6) and (6) provided on the front of the cabinet (2) have directivity. Sharp high-mid range sound is output. Thereby, the audio | voice of all the bands can be reached to a viewer efficiently.

  The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. In addition, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.

It is a perspective view of the television receiver concerning this example. It is a front view same as the above. It is a rear view which shows the internal structure of a cabinet. FIG. 4 is an exploded perspective view of FIG. 3. It is a perspective view of the conventional television receiver.

Explanation of symbols

(1) Television receiver
(2) Cabinet
(3) Display panel
(4) Cover body
(5) Speaker box
(6) Speaker
(8) Circuit board

Claims (4)

In the cabinet (2), a display panel (3) for displaying an image, a speaker box (5) for outputting sound, and a substrate (8) as a heating element are housed.
Speaker box (5), the rear surface of the display panel (3), which and is disposed between the substrate (8) substrate so that off the heat transition passage (82) (8) (82),
A television receiver, wherein a transition path of heat radiation from the substrate (8) (82) is not obstructed by the speaker box (5). The television set according to claim 1, wherein the speaker box (5) is for low-frequency audio output, and a speaker (6) (6) for high-midrange output is provided in front of the cabinet (2). Receiver. Board (8) opposite to the display panel (3), which is substantially parallel to the deployment, the television receiver according to claim 1 or 2. The television receiver according to any one of claims 1 to 3, wherein the display panel (3) is a liquid crystal panel.

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