CN2408635Y

CN2408635Y - Reflective loundspeaker

Info

Publication number: CN2408635Y
Application number: CN 00227506
Authority: CN
Inventors: 杨炼; 刘勇
Original assignee: AILANG DIGITAL TECHNOLOGY Co Ltd GUANGDONG PROV
Current assignee: Mg International Zhongshan Co., Ltd.
Priority date: 2000-03-13
Filing date: 2000-03-13
Publication date: 2000-11-29
Anticipated expiration: 2010-03-13

Abstract

The utility model provides a reflecting loudspeaker. The sounding corresponding part of the loudspeaker is provided with a reflecting rod; the reflecting rod crosses over a support frame of the loudspeaker; the cross section of the reflecting rod can form a circular shape, an elliptical shape, a prismatic shape, etc. When the partial sound waves generated by the loudspeaker meet the reflecting rod, the phenomenon that the reflection is refracted and scattered can be generated for making the radiation diffusion angle of the loudspeaker increased, for making the sound radiation surface widened, and for achieving a good stereophonic hearing effect in a wider area. The loudspeaker of the utility model has the advantages of simple structure, convenient manufacture, and convenient installation.

Description

Reflection loudspeaking device

The utility model relates to the loudspeaker arrangement in the electro-acoustic element, particularly relates to the big loudspeaker arrangement of a kind of radiation diffusion angle.

Loud speaker is a kind of electroacoustic transducer, and kind is a lot, any type no matter, and loud speaker all is the vibration sounding by vibrating diaphragm, and outwards radiate in the sound wave mode.Existing loud speaker is generally single beam of radiation, and the diffusion angle is little, and the acoustic radiating face is also little.Application number is 96117314.9 Chinese patent camber reflection loudspeaking device, it adds 180 ° of fan-shaped curved surface reflectors at the sounding face place of conventional loudspeakers, sound wave is spread out fully after reflection, not only cause the loss of power energy, and disclosed curved surface reflector complex structure, be installed in the sounding face of loud speaker, structure is extremely heavy and influence attractive in appearance.

The utility model purpose provides a kind of diffusion zone speaker unit wide, simple in structure.

For achieving the above object, the loudspeaker arrangement that the utility model proposes is such: the sounding corresponding position at loud speaker is equipped with the reflection bar, and this reflection bar is across on the bracing frame of loud speaker.

The cross section of above-mentioned reflection bar can be circular, oval, prismatic etc., and its size is usually less than 17% of loudspeaker voice coil diameter.

Because the sounding face at loud speaker is connected with a reflection bar, when the acoustic wave segment that loud speaker sends runs into this reflection bar, will produce the scattered reflection phenomenon, the radiation diffusion angle of loud speaker is increased, even reach 180 ° of fan beam zones.And the utility model loudspeaker arrangement is simple in structure, makes easy for installation.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is that the reflection bar is applied in the schematic diagram on the awl basin loudspeaker;

Fig. 2 is that the reflection bar is applied in the schematic diagram on the Dome loudspeaker;

Fig. 3 is the schematic perspective view of Fig. 2;

Fig. 4 is a principle schematic of the present utility model.

As shown in Figure 1, reflection bar 1 is installed on the awl basin loudspeaker bracing frame 21; Fig. 2 represents to reflect on the bracing frame 22 that bar 1 is installed in Dome loudspeaker; Fig. 3 then is the schematic perspective view of Fig. 2.

Fig. 4 has represented principle signal of the present utility model, and point source A is equivalent to the sounding point of loud speaker, and circular B is the cross section of reflection bar 1, and panel C then is equivalent to the front panel (loud speaker is installed on the audio amplifier) of sound box.Point source A sends sound wave, when acoustic wave segment runs into the cylinder convex surface, produces scattered reflection; Scattered reflection sound is reflected away by panel C again.As seen from Figure 4, not only angle of radiation has enlarged, and sound source also formed the face source by point source, has expanded sound field, and the knot that has improved loud speaker is as ability.

Reflection bar 1 can adopt metal or nonmetallic materials to make, and cross section also can be ellipse or prismatic with circular best.In order to be unlikely to that sound is all stopped, its external diameter is usually less than 17% of voice coil diameter; It can be adjusted to realize different sound field sizes with the distance of the diaphragm of loudspeaker; Most of sound wave that 1 pair of loud speaker of reflection bar produces does not play the emission effect, only reflect the sub-fraction sound wave, favourable to widening the acoustic radiating face like this, and make the directive property of loud speaker wide, can in more roomy zone, reach good stereophonic audition effect.

As Fig. 1, Fig. 2, the first half of reflection bar 1 is an arc, and the latter half is a square, and asymmetrical like this shape is unlikely to upper and lower reflected sound is cancelled out each other, and forms good stereophonic field.

Claims

1, a kind of reflection loudspeaking device comprises loud speaker, it is characterized in that: reflection bar (1) is installed in the sounding corresponding position of loud speaker, and this reflection bar is across on the bracing frame of loud speaker (2).

2, reflection loudspeaking device as claimed in claim 1 is characterized in that: the external diameter of described reflection bar (1) is less than 17% of voice coil diameter.

3, reflection loudspeaking device as claimed in claim 1 or 2 is characterized in that: described reflection bar (1) can be adjusted with the distance of the diaphragm of loudspeaker.

4, reflection loudspeaking device as claimed in claim 1 or 2 is characterized in that: the shape of cross section of described reflection bar (1) is best for circular, also can be ellipse or prismatic.

5, reflection loudspeaking device as claimed in claim 3 is characterized in that: the shape of cross section of described reflection bar (1) is best for circular, also can be ellipse or prismatic.

6, reflection loudspeaking device as claimed in claim 4 is characterized in that: described reflection bar (1) is an asymmetrical shape.

7, reflection loudspeaking device as claimed in claim 6 is characterized in that: described reflection bar (1) the first half is an arc, and the latter half is a square.