Built-in speaker of TV and TV

Abstract

An embodiment of the present application provides a built-in speaker for a TV, the speaker includes: a diaphragm and a speaker box, the diaphragm includes a fixed side of the diaphragm; the speaker box includes a box wall for connecting the diaphragm, The outside of the box wall includes a first groove, and the first groove is used for fixing the fixed side of the diaphragm. In the existing TV built-in speaker, the speaker diaphragm is fixed on the upper edge of the speaker box wall by its fixed side, and the sound radiation width of the diaphragm is the difference between the total diaphragm width and the speaker box wall thickness; Compared with the prior art, in the embodiment of the present application, a concave groove is provided on the outside of the speaker box wall, and then the speaker diaphragm is fixed in the groove. Therefore, in the TV built-in speaker of the present application, The sound radiation width of the diaphragm is the difference between the total diaphragm width and the thickness of the groove. Since the thickness of the groove is much smaller than the thickness of the speaker box wall, the sound radiation width of the diaphragm is greatly increased, thereby improving the loudspeaker. The output sound pressure level widens the lower limit of the speaker's low-frequency reproduction.

Description

Technical field[0001]The present invention relates to the field of home appliance audio, in particular to a built-in speaker of a television and a television.Background technique[0002]In the prior art, as thin appearance and narrow bezel design have become the mainstream direction of TV design, the thinness of TV sets requires thinner and thinner TV sets, and the thickness of the speakers in the whole set also becomes thinner, thus limiting The thickness of the built-in speakers of the TV. Under the condition that the lower sounding track type speaker is limited by the thickness of the speaker, due to the small width, the large core number magnet cannot be used, resulting in low output sound pressure level of the speaker. At the same time, the small thickness of the speaker results in the sound radiation width of the speaker diaphragm. Small, high speaker resonance frequency, low frequency performance of the speaker is poor.[0003]specific,figure 1 It is a schematic diagram of fixing...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the speaker 100 includes a speaker box wall 110 and a speaker diaphragm 120, wherein the fixed edge 121 of the diaphragm 120 is pasted and fixed on the top of the speaker box wall 110 with glue. The width of the film fixed edge 121 is generally set to the wall thickness of the sound box wall 110; for example, in the existing TV speakers, in order to make the speaker structure stable, and in order to ensure that the internal structure of the speaker will not be deformed by external forces, the sound box wall 110 The wall thickness of the wall usually needs to be set to 2.5mm, that is, for the fixing of the diaphragm in the existing TV, the width of the fixed side on one side is 2.5mm, and the width of the fixed side on both sides reaches 5mm, while the width of the speaker diaphragm 120 is about 25mm. Obviously, in the fixed structure of the diaphragm of the built-in speaker of the existing TV, the thickness of the fixed side occupies 1 / 5 of the width of the diaphragm 120, and since this width does not directly contribute to the sound output of the speaker 100

Therefore, in the existing TV built-in speaker structure, due to the need for the diaphragm to be fixed, the width of the actual output sound of the diaphragm can only reach 4 / 5 of the total width of the diaphragm, that is, the effective diaphragm area of ​​the actual output sound can only account for 4 / 5 of the total width of the diaphragm. to about 80% of the total diaphragm area; therefore, the sound radiation efficiency of the speaker diaphragm is not high, the sound output effect of the speaker diaphragm is not good, and the output sound pressure level of the speaker is not high

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