CN2393285Y - ceiling speaker - Google Patents

Abstract

A ceiling type sound box comprises a frequency divider, an exciter and a vibration sound-emitting plate, wherein the input end of the frequency divider is connected with an input audio line, the output end of the frequency divider is connected to the exciter through an output audio line, the vibration sound-emitting plate is in a thin plate shape and comprises a metal platinum layer, two paper layers and a plastic material layer clamped between the two paper layers, and the exciter is fixed on the metal platinum layer on the back of the vibration sound-emitting plate. The external electroacoustic signal is transmitted to the frequency divider through an input audio line, and the frequency divider transmits the specified frequency band to the exciter through an output audio line to drive the vibration sound-emitting plate to emit sound. The loudspeaker box has the characteristics of no directivity, radiation sound source and scattered reflection, and compared with the common loudspeaker box, the playing effect is improved.

Description

ceiling speaker

The utility model relates to a sound box, in particular to a ceiling sound box capable of producing scattered, radiating and non-directional sound sources and serving as a ceiling.

As shown in Figures 1 and 2, an ordinary sound box is equipped with upper and lower speakers 12 and 11 respectively on a predetermined box body 7, and the frequency division circuit 9 divides the input signal into several frequency bands and sends them to the speakers 12 respectively. The drive unit 10 and the drive unit 8 in the speaker 11 , the hemispherical diaphragm on the drive unit 10 and the conical vibrating basin on the drive unit 8 vibrate and emit sound under the action of a certain frequency electric signal, thereby playing music.

Although the above-mentioned traditional sound box setting method can send out standard music that meets the design requirements through the sound source signal and the frequency division circuit, it still has the following disadvantages when playing music: First, because the frequency response of ordinary sound boxes is linear, it has The directivity characteristic requires the speaker to be placed in the correct position, and the listener also needs to be in the correct position in order to achieve a better hearing effect; secondly, the ordinary speaker is based on a point sound source, close to the position of the speaker The place where the sound is loud is loud, and the place far away from the speaker is small; again, the coherent sound waves produced by ordinary speakers are concentric waves centered on the point sound source. Therefore, ordinary speakers are greatly restricted in terms of placement and spatial distance, and the sound effect of such ordinary speakers is not good due to sound wave interference.

The purpose of the utility model is to provide a ceiling type sound box which can overcome the problems of directivity, point sound source and sound wave interference, is convenient to arrange and has good playback effect.

The technical solution of the present invention is to provide a ceiling-mounted sound box, which includes a frequency divider, an exciter and a vibration sounding board, the input end of the frequency divider is connected with an input audio line, and the output end of the frequency divider is connected through an output The audio cable is connected to the exciter. It is characterized in that the vibrating sounding board is thin and flat. It is composed of a metal platinum layer, two paper layers and a plastic material layer sandwiched between the two paper layers. The exciter is fixed On the metal platinum layer on the back of the vibrating sound board.

In addition, the above-mentioned metal platinum layer is preferably two layers.

Further, the above-mentioned exciter is fixed on the central area of the back of the vibrating sounding board.

Moreover, there may also be a ceiling pattern on the front side of the vibrating sounding board.

Moreover, the input audio line is connected to a two-way terminal block, and the two-way terminal block is connected to external signal lines.

The ceiling type sound box of the present utility model is described in detail below by accompanying drawing, in the accompanying drawing:

Fig. 1 is a three-dimensional schematic diagram of a common speaker;

Fig. 2 is a schematic sectional view of a common speaker;

Fig. 3 is the three-dimensional structural diagram of the ceiling type sound box of the present utility model;

As shown in Figure 3, the ceiling sound box of the present utility model has a vibrating sounding board 1, and this vibrating sounding board 1 is made into the shape of a ceiling panel, and the front side (i.e., the lower surface in the figure) can be attached or coated with various ceiling panels. or other design patterns, but with a different structure than the ceiling.

An exciter 2 is fixed on the vibration sounding board 1 , and a frequency divider 3 is also provided, and the frequency divider 3 can be fixed on the vibration sounding board 1 . The input end of this frequency divider is connected with input audio frequency line 5, and its output end is connected with output audio frequency line 4, and the other end of this output audio frequency line 4 is connected on the input port of exciter 2, external electroacoustic signal and music signal Through the two-way terminal block 6, it is transmitted to the frequency divider 3 through the input audio line 5, and then the frequency divider 3 transmits the specified frequency band to the exciter 2 of the electric drive unit through the output audio line 4 to drive the vibration sounding board 1 Make sounds and play music.

Wherein, the vibration sounding board 1 is composed of a metal platinum layer A, two layers of paper layers B and a plastic material layer C sandwiched between the two layers of paper layers B, the metal platinum layer A is used as its diaphragm, and the metal platinum layer A is preferably two layers, two paper layers B and a plastic material layer C sandwiched between the two paper layers B as a vibration medium.

The exciter 2 is an electric drive unit in the ceiling-mounted sound box, which drives the vibrating sounding board 1, so that the vibrating sounding board vibrates as a whole in the vibrating medium formed by itself, and emits sound. Therefore, the vibration source is not a point vibration source, but is the source of radiation vibration.

The purpose of frequency divider 3 is to control the frequency response range in the specified frequency band. Ceiling-mounted speakers usually play background music, which is mainly composed of mid- and high-frequency bands. Therefore, the function of the frequency divider is to filter out unnecessary low-frequency bands, keep mid-high frequencies clear and pure, and meet the technical requirements of background music.

The shape of the ceiling-type sound box of the present utility model is the shape of a ceiling panel, and its installation method can be that the sound box is placed in a frame by using a rubber insulating washer or spacer, and the frame itself is fixed to the designated position of the ceiling. Or install the in-ceiling speaker directly into the ceiling grid with foam. Ceiling speakers should be placed flat across a certain ceiling area. This rubber insulating spacer is usually located at the edge of the vibrating sounding board, the area that contributes least to the vibration, and in this area, any damping effect due to the rubber insulating spacer installation will have the least impact on the rest of the board. The back side of the vibrating sound board (the top in Fig. 3) has a certain distance from the ceiling, generally at least 200mm. If space is limited, absorbent padding can be placed to absorb energy from the back of the vibrating sounding panels, limiting possible reflections from other parts of the ceiling. This in-ceiling speaker can also be mounted at an angle on a wall.

In use, both sides of the enclosure vibrate in a complex manner to produce a dispersed, divergent and non-directional sound source, the entire surface of the panel being a sound radiator. Therefore, the beneficial effect of the ceiling sound box of the present utility model is that, first, the electric-driven vibration sounding board on the ceiling sound box has the characteristics of constant frequency response and non-directionality, so the sound box is not limited by the placement position; second , the ceiling speaker plays a radiant sound source instead of a point sound source through the vibrating sounding board, and the sound is transmitted to a farther place with the same loudness; third, the sound source emitted by the vibrating sounding board is essentially random , because it is incoherent and correspondingly out of sync, technically known as a diffuse or diffuse source, where the sounds do not cancel out and overlap. Therefore, the ceiling-mounted sound box of the utility model has the characteristics of non-directionality, radiating sound source, and scattered reflection, overcomes the inherent limitations of ordinary sound boxes in terms of position, distance, direction, and sound strength, and brings great advantages in music playback. Great convenience, and the playback effect has been greatly improved.

Claims (5)

1, a kind of ceiling-type audio amplifier, it comprises a frequency divider, an exciter and a vibration pronunciation board, the input of this frequency divider (3) is connected with an input tone frequency channel wire (5), its output is connected to exciter (2) by an output audio line (4), it is characterized in that, this vibration pronunciation board (1) is that Boping is tabular, it is by metal platinum layer (A), two-layer papery layer (B) and be clipped in middle plastic material layer (C) formation of this two-layer papery layer (B), and exciter (2) is fixed on the metal platinum layer (A) at vibration pronunciation board (1) back side.

2, ceiling-type audio amplifier as claimed in claim 1 is characterized in that, metal platinum layer (A) is two-layer.

3, ceiling-type audio amplifier as claimed in claim 1 or 2 is characterized in that, exciter (2) is fixed on the central area at the back side of vibration pronunciation board (1).

4, ceiling-type audio amplifier as claimed in claim 1 or 2 is characterized in that, on the front of this vibration pronunciation board (1) the ceiling pattern is arranged.

5, ceiling-type audio amplifier as claimed in claim 1 or 2 is characterized in that, this input tone frequency channel wire (5) is connected on the two-way terminal block (6), and this two-way terminal block (6) is connected with the outer signals line.

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