JPH04301997A - Television receiver - Google Patents

Abstract

PURPOSE:To improve the degree of separating of right and left loudspeakers and to improve sound quality by absorbing sounds radiated backward in a box body from the loudspeakers by a sound absorbing member by providing this sound absorbing member at the rear part of the loudspeakers. CONSTITUTION:At the rear parts of loudspeakers 1 and 2, sound absorbing members 7 composed of sponge or the like are directly adhered to the inside face of a front cabinet 4 by an adhesive member. It is also preferable to provide ribs 8a-8c on the inside face of the cabinet 4 and to hold a band-shaped sound absorbing member 7' by these ribs 8a-8c. In this case, the sound absorbing member 7' can be fixed to the ribs 8a-8c by an adhesive agent, etc. Thus, since the sound absorbing member is arranged at the rear parts of the loudspeakers 1 and 2, the frequency characteristic of the loudspeakers 1 and 2 is corrected to a flat characteristic by removing peak dip at middle and high frequencies. Therefore, the sound quality is improved at the middle and high frequencies.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly to a television receiver in which sound absorption of a built-in midrange speaker is taken into consideration.

0002

[Prior Art] In an AV (audio video) television receiver with a built-in speaker, as shown in FIGS. A tweeter 1 and a squawker 2 for the middle range are arranged vertically. Here, FIG. 5 is a front view,
FIG. 6 is a view of the inside viewed from the top. On the other hand, in the conventional example shown in FIG. 7, a tweeter 1 and a squawker 2 are housed in a box 6 and placed on the left and right sides of a cathode ray tube 3.

0003

[Problems to be Solved by the Invention] Since the television receiver forms one box with the front cabinet 4 and the back cabinet 5, in the conventional examples shown in FIGS. 5 and 6, the stereo left and right separation degree is Unfortunately, the mid-high range of the audio tends to become noisy, resulting in a decrease in sound quality. By the way,
The solid line (a) in FIG. 8 shows the frequency characteristics, and it can be seen that there are many peaks and dips in the middle and high ranges. On the other hand, although the conventional example shown in FIG. 7 has good sound quality, it has the drawback of increasing cost because the box 6 is provided.

[0004] The present invention has been made in view of the above points, and an object of the present invention is to provide a television receiver with improved sound quality through a simple configuration.

0004

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a television receiver in which speakers for medium range or high range are arranged between both sides of a cathode ray tube and a cabinet. A sound absorbing material is fixed to the inner surface of the cabinet at the rear of the cabinet. In that case, the sound absorbing material may be directly attached to the inner surface of the cabinet, or may be held and fixed to ribs provided on the cabinet.

[0005]

[Function] According to this configuration, since the sound absorbing material is arranged behind the speaker, the sound emitted from the speaker toward the rear inside the box body is absorbed by this sound absorbing material.
It does not spread inside the box. Therefore, the degree of separation between the left and right speakers is good, and the sound quality is improved. In addition, since only the sound absorbing material fixed to the inner surface of the cabinet is provided, the structure is simple and the cost is low.

[0006]

[Example] In FIGS. 1 to 4 in which the present invention was implemented, FIG.
, parts that are the same as those in the conventional example shown in FIG. First, in the first embodiment shown in FIGS. 1 and 2, a sound absorbing material 7 made of sponge or the like is directly adhered to the inner surface of the front cabinet 4 behind the speakers 1 and 2 using an adhesive.

Next, in a second embodiment shown in FIGS. 3 and 4, ribs 8a, 8b, 8c are provided on the inner surface of the front cabinet 4 as shown in the drawings, and a band-shaped sound absorbing material 7 is formed by these ribs 8a, 8b, 8c. 'I'm trying to keep it. in this case,
The sound absorbing material 7' may be fixed to the ribs 8A, 8b, 8c with an adhesive or the like.

By arranging the sound absorbing material behind the speakers 1 and 2 as in the first and second embodiments, the frequency characteristics of the speakers 1 and 2 are as shown by the dotted line (b) in FIG. As shown, the peak dip in the mid-high range has been removed and the characteristics have been modified to be flat. Therefore, the sound quality in the middle and high ranges is improved.

In the above embodiment, a sound absorbing material is provided behind the speaker system having the tweeter 1 and the squawker 2, but if either the tweeter 1 or the squawker 2 is It can also be applied to speaker systems that have only one side, and even if the speaker system has both sides, it can be configured to only be placed behind one side. , the sound quality is improved compared to the conventional example.

0010

Effects of the Invention As explained above, according to the present invention, since the sound absorbing material is arranged behind the speaker, the sound emitted from the speaker toward the rear inside the box body is absorbed by the sound absorbing material. It will be absorbed and will not spread inside the box. Therefore, the degree of separation between the left and right speakers is good, and the sound quality is improved. Moreover,
Since only the sound absorbing material fixed to the inner surface of the cabinet is provided, the structure is simple and the cost is low.

[Brief explanation of drawings]

FIG. 1 is a front view of a television receiver according to a first embodiment of the present invention.

FIG. 2 is a plan view of the inside viewed from the top.

FIG. 3 is a front view of a second embodiment of the invention.

FIG. 4 is a diagram showing the configuration of its main parts.

FIG. 5 is a front view of a conventional example.

FIG. 6 is a plan view when looking inside from the top surface.

FIG. 7 is a plan view of another conventional example.

FIG. 8 is a diagram showing frequency characteristics of the present invention and a conventional example.

[Explanation of symbols]

1 Tweeter 2 Squawka 3 Braun tube 4 Front cabinet 5 Back cabinet 7 Sound absorbing material 8a, 8b, 8c Rib

Claims (3)

[Claims] Claim 1: In a television receiver in which speakers for mid-range or high-range are arranged between both sides of a cathode ray tube and a cabinet, a sound-absorbing material is fixed to the inner surface of the cabinet behind the speakers. A television receiver characterized by: 2. The television receiver according to claim 1, wherein the sound absorbing material is directly adhered to the inner surface of the cabinet. 3. The television receiver according to claim 1, wherein the sound absorbing material is held by ribs provided on the cabinet.