Microphone
Technical field
The utility model relates to the acoustical-electrical transducer technical field, more specifically, relates to a kind of microphone that can have the effect of making an uproar against sunshine.
Background technology
Along with the progress of society and the development of technology, in recent years, along with electronic product volumes such as mobile phone, notebook computer constantly reduce, people are also more and more higher to the performance requirement of these portable electronic products, thereby also require the volume of supporting with it electronic component constantly to reduce, performance and consistency improve constantly.Under this background, also released a lot of novel products as the microphone products field of one of strength member of above-mentioned portable electronic products, be representative products wherein with the back-polar type microphone.
Operation principle for common back-polar type microphone products, as accompanying drawing 1 is a kind of microphone products profile of routine, comprise that shell 1 and wiring board 2 constitute the outer enclosure structure of microphone, on shell 1, be provided with the sound hole 11 that is used to receive voice signal, be provided with by diaphragm 4 in encapsulating structure inside, pad 5, the plane-parallel capacitor that pole plate 6 is formed, described plane-parallel capacitor is electrically connected with wiring board 2 by grating ring 7 and the shell 1 in the cavity 8, on described pole plate 6, be provided with pole plate hole 61, wiring board 2 is provided with the electronic circuit set of being made up of components and parts 3, since this fixed structure caused extraneous light easily from the external world by the sound hole 11 on the shell 1, pass diaphragm 4, pad 5, the plane-parallel capacitor that pole plate 6 is formed, affact in the electronic circuit set 3 on the wiring board, work to electronic circuit set 3 brings certain interference, is commonly called as " optical noise ".Simultaneously, illumination is mapped in the electronic circuit set, also can the electrical property of microphone be exerted an influence.
Thus, need design a kind of simple in structure, and can be good at realizing falling the make an uproar microphone structure of effect of light.
The utility model content
In view of the above problems, the purpose of this utility model provides a kind of simple in structure and can realize falling the make an uproar microphone of effect of light well.
For solving the problems of the technologies described above; the utility model is by the following technical solutions: a kind of microphone; comprise the outer enclosure structure of forming by shell and wiring board; on described shell, be provided with the sound hole that is used to receive voice signal; described encapsulating structure inside is provided with the plane-parallel capacitor of being made up of diaphragm, pad, pole plate; described plane-parallel capacitor is electrically connected with wiring board by grating ring and the shell in the cavity; wiring board is provided with the electronic circuit set of being made up of components and parts; wherein, described shell sound hole surface is provided with the catch net of making an uproar against sunshine.
In addition, optimized technical scheme is that in described encapsulating structure inside, described shell sound hole surface is provided with the catch net of making an uproar against sunshine.
In addition, optimized technical scheme is that in described encapsulating structure outside, described shell sound hole surface is provided with the catch net of making an uproar against sunshine.
In addition, optimized technical scheme is that described catch net is the macromolecule foaming catch net.
In addition, optimized technical scheme is that described catch net is nonwoven fabrics catch net or braiding catch net.
In addition, optimized technical scheme is that the color of described catch net is black or navy blue or Dark grey or dark brown or blackish green or dark-brown or coffee color.
Utilize above-mentioned according to microphone of the present utility model; be provided with the catch net of making an uproar against sunshine by shell sound hole surface, can stop the illumination that the external world enters, make extraneous illumination seldom enter microphone inside; thereby well realize noise reduction, and can not have influence on the reception of voice signal.
Description of drawings
By the content of reference below in conjunction with the description of the drawings and claims, and along with understanding more comprehensively of the present utility model, other purpose of the present utility model and result will understand and easy to understand more.In the accompanying drawings:
Fig. 1 is the cross-sectional view of the utility model background technology.
Fig. 2 is the cross-sectional view of the utility model embodiment one.
Fig. 3 is the cross-sectional view of the utility model embodiment two.
Identical label is indicated similar or corresponding feature or function in institute's drawings attached.
Embodiment
Below with reference to accompanying drawing specific embodiment of the utility model is described in detail.
Embodiment one
Fig. 2 is the cross-sectional view of the utility model embodiment one.As shown in Figure 2; a kind of microphone; comprise the outer enclosure structure of forming by shell 1 and wiring board 2; on described shell 1, be provided with the sound hole 11 that is used to receive voice signal; described encapsulating structure inside is provided with by diaphragm 4; pad 5; the plane-parallel capacitor that pole plate 6 is formed; described plane-parallel capacitor is electrically connected with wiring board 2 by grating ring 7 and the shell 1 in the cavity 8; on described pole plate 6, be provided with pole plate hole 61; wiring board 2 is provided with the electronic circuit set of being made up of components and parts 3; wherein; in encapsulating structure inside, 11 surfaces, shell sound hole are provided with the catch net 9 of making an uproar against sunshine.
As optimized technical scheme; the color of catch net can be selected the color of black, navy blue, Dark grey, dark brown, blackish green, dark-brown, coffee color or other dark systems; in order to stop illumination from the microphone outside; prevent that extraneous light from shining electronic circuit set 3 on the wiring board 2 by sound hole 11, diaphragm 4, pole plate hole 61; thereby reduce the illumination that enters microphone inside as far as possible, to realize falling the effect that light is made an uproar.Preferred in the present embodiment black can reach best effect as the color of catch net.
This design of the utility model only shell sound hole surface of the encapsulating structure inside by microphone is provided with the catch net 9 of making an uproar against sunshine; prevent that extraneous light from shining the electronic circuit set 3 on the wiring board 2; realize well falling the light effect of making an uproar by the mode that stops light; simplicity of design and be easy to realize; and catch net is arranged at the encapsulating structure enclosure; can not increase product size; pickup effect to product can not exert an influence yet, and simultaneously this catch net also can play environmental protection effects such as dustproof, waterproof.
In the implementation case, as optimized technical scheme, catch net can be selected the macromolecule foaming catch net, and the air-vent aperture of this catch net is even, and can regulate the frequency response curve of microphone, plays good acoustic efficiency; Catch net can also be selected nonwoven fabrics catch net or mesh grid, and the air-vent aperture of this catch net is even, with low cost, can realize well preventing dust, waterproof, fall light environmental protection effect such as make an uproar.
Embodiment two
Fig. 3 is the cross-sectional view of the utility model embodiment two.As shown in Figure 3; a kind of microphone; comprise the outer enclosure structure of forming by shell 1 and wiring board 2; on described shell 1, be provided with the sound hole 11 that is used to receive voice signal; described encapsulating structure inside is provided with by diaphragm 4; pad 5; the plane-parallel capacitor that pole plate 6 is formed; described plane-parallel capacitor is electrically connected with wiring board 2 by grating ring 7 and the shell 1 in the cavity 8; on described pole plate 6, be provided with pole plate hole 61; wiring board 2 is provided with the electronic circuit set of being made up of components and parts 3; wherein; in the encapsulating structure outside, 11 surfaces, shell sound hole are provided with the catch net 9 of making an uproar against sunshine.
As optimized technical scheme; the color of catch net 9 can be selected the color of black, navy blue, Dark grey, dark brown, blackish green, dark-brown, coffee color or other dark systems; in order to stop illumination from the microphone outside; prevent that extraneous light from shining electronic circuit set 3 on the wiring board 2 by sound hole 11, diaphragm 4, pole plate hole 61; thereby reduce the illumination that enters microphone inside as far as possible; prevent that extraneous light from shining the electronic circuit set 3 on the wiring board 2, to realize falling the effect that light is made an uproar.Preferred in the present embodiment black can reach best effect as the color of catch net.
This design of the utility model only shell sound hole surface of the encapsulating structure outside by microphone is provided with the catch net of making an uproar against sunshine; prevent that extraneous light from shining the electronic circuit set 3 on the wiring board 2; realize well falling the light effect of making an uproar by the mode that stops light; simplicity of design and be easy to realize; and catch net is arranged at the outside of encapsulating structure shell; simple to operate; and also can not exert an influence to the pickup effect of product, this catch net also can play environmental protection effects such as dustproof, waterproof simultaneously.
In the implementation case, as optimized technical scheme, catch net can be selected the macromolecule foaming catch net, and the air-vent aperture of this catch net is even, and can regulate the frequency response curve of microphone, plays good acoustic efficiency; Catch net can also be selected nonwoven fabrics catch net or mesh grid, and the air-vent aperture of this catch net is even, with low cost, can realize well preventing dust, waterproof, fall light environmental protection effect such as make an uproar.
In above cited embodiment, the suitable adjustment of gathering in view of the electronic circuit on the wiring board does not influence purport of the present utility model, and the electronic circuit set in the pattern only adopts simple pattern to represent.