CN204392570U - A kind of Novel small-sized electronic microphone equipment for classroom - Google Patents
A kind of Novel small-sized electronic microphone equipment for classroom Download PDFInfo
- Publication number
- CN204392570U CN204392570U CN201520133189.1U CN201520133189U CN204392570U CN 204392570 U CN204392570 U CN 204392570U CN 201520133189 U CN201520133189 U CN 201520133189U CN 204392570 U CN204392570 U CN 204392570U
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- CN
- China
- Prior art keywords
- loudspeaker
- power amplifier
- preamplifier
- sized electronic
- novel small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of Novel small-sized electronic microphone equipment for classroom, comprise loudspeaker bottom support, loudspeaker housing, preamplifier, power puts too device, described loudspeaker housing is provided with above described loudspeaker bottom support, dust-proof guard is provided with above described loudspeaker housing, loudspeaker switch is provided with below described dust-proof guard, earphone jack is provided with below described loudspeaker switch, saturation condition indicator light is provided with below described earphone jack, described preamplifier is provided with above described power amplifier, described loudspeaker enclosure interior is provided with heat-dissipating impeller, loudspeaker are provided with above described heat-dissipating impeller.The utility model uses lithium battery, repeatedly can charge, economize on resources, and after signal being amplified via power amplifier, clear sound, and the sound that can not jangle.
Description
Technical field
The utility model belongs to domain of communication equipment, is specifically related to a kind of Novel small-sized electronic microphone equipment for classroom.
Background technology
Loudspeaker is as the term suggests amplify sound exactly, and the farther meaning of propagation is a kind of electro-acoustic element signal of telecommunication being converted to voice signal.Exactly, micropkonic reality of work is that the audio-frequency electric power signal in certain limit is changed into distortion by transducing mode is little and have the sub-audible sound of enough sound pressure levels, the micropkonic sound penetration of relative audio amplifier is stronger.Initial loudspeaker, use electron tube, bulky, weight is not light.Along with electronic component is constantly microminiaturized, integrated, Portable loudspeaker also runs and gives birth to, though volume is little, sound is not inferior at all.Portable loudspeaker refers to and is easy to carry eaily, mostly possesses small volume, clear a kind of public address set simple to operate.At present, loudspeaker most sound in classroom is clear not, and the sound that easily jangles, and involves great expense, and volume is comparatively large, be not easy to carry, and service time is short, easily causes the wasting of resources.
Utility model content
The purpose of this utility model is just to provide a kind of Novel small-sized electronic microphone equipment for classroom to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of Novel small-sized electronic microphone equipment for classroom, comprise loudspeaker bottom support, loudspeaker housing, preamplifier, power amplifier, described loudspeaker housing is provided with above described loudspeaker bottom support, dust-proof guard is provided with above described loudspeaker housing, loudspeaker switch is provided with below described dust-proof guard, earphone jack is provided with below described loudspeaker switch, saturation condition indicator light is provided with below described earphone jack, charging jacks is provided with below described saturation condition indicator light, control circuit is provided with below described charging jacks, lithium battery is provided with above described control circuit, described power amplifier is provided with above described lithium battery, described preamplifier is provided with above described power amplifier, described loudspeaker enclosure interior is provided with heat-dissipating impeller, loudspeaker are provided with above described heat-dissipating impeller.
In said structure, voice signal changes the signal of telecommunication into by described preamplifier, after described power amplifier amplifying signal, change voice signal into, export via described loudspeaker, described lithium battery provides the energy for loudspeaker, and described charging jacks provides charging for described lithium battery.
In order to improve the efficiency that amplifies further, described control circuit is arranged on described loudspeaker outside, and described power amplifier is arranged on described loudspeaker outside.
In order to improve the efficiency that amplifies further, described preamplifier is connected with described power amplifier, and described saturation condition indicator light is connected with described lithium battery.
In order to improve the efficiency that amplifies further, described preamplifier is connected with described control circuit, and described charging jacks is connected with described control circuit.
In order to improve the efficiency that amplifies further, use wire to connect between described heat-dissipating impeller and described lithium battery, described dust-proof guard is connected with described loudspeaker housing.
Beneficial effect: use lithium battery, repeatedly can charge, economize on resources, and after signal being amplified via power amplifier, clear sound, and the sound that can not jangle.
Accompanying drawing explanation
Fig. 1 is the front view of the Novel small-sized electronic microphone equipment for classroom described in the utility model;
Fig. 2 is the vertical view of the Novel small-sized electronic microphone equipment for classroom described in the utility model;
Fig. 3 is the left view of the Novel small-sized electronic microphone equipment for classroom described in the utility model.
1, loudspeaker bottom support; 2, preamplifier; 3, lithium battery; 4, loudspeaker housing; 5, power amplifier; 6, heat-dissipating impeller; 7, loudspeaker; 8, dust-proof guard; 9, earphone jack; 10, saturation condition indicator light; 11, charging socket; 12, control circuit; 13, loudspeaker switch.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1-Figure 3, a kind of Novel small-sized electronic microphone equipment for classroom, comprise loudspeaker bottom support 1, loudspeaker housing 4, preamplifier 2, power amplifier 5, loudspeaker housing 4 is provided with above loudspeaker bottom support 1, in order to protect loudspeaker interior arrangement, dust-proof guard 8 is provided with above loudspeaker housing 4, heat-dissipating impeller is fallen in order to prevent dust, loudspeaker switch 13 is provided with below dust-proof guard 8, in order to control loudspeaker switch, earphone jack 9 is provided with below loudspeaker switch 13, in order to be connected into peripheral earphone, saturation condition indicator light 10 is provided with below earphone jack 9, whether electricity is full of in order to point out lithium battery, charging jacks 11 is provided with below saturation condition indicator light 10, in order to connecting charger, control circuit 12 is provided with below charging jacks 11, in order to control loudspeaker, above control circuit, 12 are provided with lithium battery 3, with thinking that loudspeaker provides electricity, power amplifier 5 is provided with above lithium battery 3, in order to amplify signal, change the signal of telecommunication into voice signal simultaneously, preamplifier 2 is provided with above power amplifier 5, in order to amplify voice signal, change voice signal into the signal of telecommunication simultaneously, loudspeaker housing 4 inside is provided with heat-dissipating impeller 6, in order to dispel the heat to loudspeaker inside, prevent loudspeaker over-heat inside, loudspeaker 7 are provided with above heat-dissipating impeller 6, in order to voice signal is spread out of.
In said structure, voice signal changes the signal of telecommunication into by preamplifier 3, after power amplifier 5 amplifying signal, changes voice signal into, exports via loudspeaker 7, and lithium battery 3 provides the energy for loudspeaker, and charging jacks 11 provides charging for lithium battery.
In order to improve the efficiency that amplifies further, it is outside that control circuit 12 is arranged on loudspeaker housing 4, it is outside that power amplifier 5 is arranged on loudspeaker housing 4, preamplifier 2 is connected with power amplifier 5, saturation condition indicator light 10 is connected with lithium battery 3, and preamplifier 2 is connected with control circuit 12, and charging jacks 11 is connected with control circuit 12, use wire to connect between heat-dissipating impeller 6 and lithium battery 3, dust-proof guard 8 is connected with loudspeaker housing 4.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (5)
1. the Novel small-sized electronic microphone equipment for classroom, it is characterized in that: comprise loudspeaker bottom support, loudspeaker housing, preamplifier, power amplifier, described loudspeaker housing is provided with above described loudspeaker bottom support, dust-proof guard is provided with above described loudspeaker housing, loudspeaker switch is provided with below described dust-proof guard, earphone jack is provided with below described loudspeaker switch, saturation condition indicator light is provided with below described earphone jack, charging jacks is provided with below described saturation condition indicator light, control circuit is provided with below described charging jacks, lithium battery is provided with above described control circuit, described power amplifier is provided with above described lithium battery, described preamplifier is provided with above described power amplifier, described loudspeaker enclosure interior is provided with heat-dissipating impeller, loudspeaker are provided with above described heat-dissipating impeller.
2. a kind of Novel small-sized electronic microphone equipment for classroom according to claim 1, it is characterized in that: described control circuit is arranged on described loudspeaker outside, described power amplifier is arranged on described loudspeaker outside.
3. a kind of Novel small-sized electronic microphone equipment for classroom according to claim 1, it is characterized in that: described preamplifier is connected with described power amplifier, described saturation condition indicator light is connected with described lithium battery.
4. a kind of Novel small-sized electronic microphone equipment for classroom according to claim 1, it is characterized in that: described preamplifier is connected with described control circuit, described charging jacks is connected with described control circuit.
5. a kind of Novel small-sized electronic microphone equipment for classroom according to claim 1, it is characterized in that: use wire to connect between described heat-dissipating impeller and described lithium battery, described dust-proof guard is connected with described loudspeaker housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520133189.1U CN204392570U (en) | 2015-03-09 | 2015-03-09 | A kind of Novel small-sized electronic microphone equipment for classroom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520133189.1U CN204392570U (en) | 2015-03-09 | 2015-03-09 | A kind of Novel small-sized electronic microphone equipment for classroom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204392570U true CN204392570U (en) | 2015-06-10 |
Family
ID=53365247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520133189.1U Expired - Fee Related CN204392570U (en) | 2015-03-09 | 2015-03-09 | A kind of Novel small-sized electronic microphone equipment for classroom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204392570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658325A (en) * | 2017-03-05 | 2017-05-10 | 刘金凤 | Light amplifier for teaching |
-
2015
- 2015-03-09 CN CN201520133189.1U patent/CN204392570U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106658325A (en) * | 2017-03-05 | 2017-05-10 | 刘金凤 | Light amplifier for teaching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20160309 |