CN2881844Y - Scientific popularization exhibit of simple loudspeaker - Google Patents
Scientific popularization exhibit of simple loudspeaker Download PDFInfo
- Publication number
- CN2881844Y CN2881844Y CN 200520140376 CN200520140376U CN2881844Y CN 2881844 Y CN2881844 Y CN 2881844Y CN 200520140376 CN200520140376 CN 200520140376 CN 200520140376 U CN200520140376 U CN 200520140376U CN 2881844 Y CN2881844 Y CN 2881844Y
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- CN
- China
- Prior art keywords
- power amplifier
- loudspeaker
- bucket
- sheet iron
- analog speakers
- 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.)
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Abstract
A scientific popularization exhibit of simple loudspeaker is characterized in an audio transmission loop composed of a CD player, a power amplifier and a simulated speaker. The simulated speaker is made of a bugle-shaped iron bucket. A magnetic steel bar is placed inside the bucket and a cable used to receive output signals from the power amplifier is wound on the exterior surface of the bucket. Audio signals produced by the CD player are amplified by the power amplifier and exported by the simulated speaker so that audience can hear music transmitted from the bucket. The utility model provides a simple, vivid and interesting teaching method with a simple structure in which household materials are used to simulate a speaker.
Description
Technical field:
The utility model relates to the science popularization showpiece, more specifically says so to be used for demonstrating the science popularization showpiece of speaker operation principle.
Background technology:
In the universal method of middle Chinese's republic's science and technology, clear and definite with the form of law: science popularization is utility, is the important content of construction of socialist material and spirit civilization.Work of popular science improves citizen's scientific and cultural quality for implementing the strategy of developing the country by relying on science and education and the strategy of sustainable development, promotes economic growth and social progress, and significant meaning is arranged.Also emphasize in section's popularize law, carry out science popularization, should take the mode of public's easy to understand, acceptance and participation.
At present, more large-scale science popularization venue has been had in China, also has " science and technology center of flowing "---and science popularization van (existing 66 science popularization vans in the whole nation at present are distributed in 30 provinces and cities in the whole nation), they all need various science popularization showpieces to enrich its contents of the exhibition.
Nowadays, the use of loudspeaker in various occasions is very general, and the principle of work of loudspeaker and version also have been proven technique very.But,, also do not have a kind of simply and intuitively apparatus at present as loudspeaker science popularization showpiece.
Summary of the invention:
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of simple and easy loudspeaker science popularization showpiece that can simply and intuitively show the speaker operation principle being provided.
The technical scheme that the utility model technical solution problem is adopted is:
Design feature of the present utility model is to constitute the broadcast loop by CD player, power amplifier and analog speakers, described analog speakers adopts has bell-mouthed tinned sheet iron bucket, in described tinned sheet iron bucket, place magnet steel, the cable that receives the output signal of power amplifier is wrapped in the periphery of tinned sheet iron bucket.
Design feature of the present utility model also is to be provided with loudspeaker and three analog speakers on show stand, three analog speakers series connection mutually in the output loop of power amplifier, three tinned sheet iron buckets that analog speakers adopts size to have nothing in common with each other, magnet steel that corresponding outfit varies in size and the cable that twines the different number of turns.
The sound signal that is produced by the CD player promotes analog speakers output after power amplifier amplifies, spectators can hear the beautiful music that is played out by the tinned sheet iron bucket.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
1, the utility model adopts daily daily necessities to be modeled to loudspeaker with extremely simple version, and is simple and easy and lively, interesting strong, teaches through lively activities.
2, the utility model can be placed in the science popularization venue and show, also can be used as the vehicle-mounted showpiece of science popularization van, shows with car is touring.
3, the utility model is simple in structure, and is easy to implement.
Description of drawings:
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model embodiment structural representation.
Number in the figure: 1 is CD player, 2 power amplifiers, 3 tinned sheet iron buckets, 4 cables, 5 magnet steel, 6 show stands, 7 loudspeaker.
The utility model is described in further detail by the following examples.
Referring to accompanying drawing, analog speakers in the present embodiment adopts the tinned sheet iron bucket 3 of common use in the daily life, in the inside of tinned sheet iron bucket 3, places magnet steel 5, and the cable 4 that is used to receive power amplifier 2 output signals is wrapped in the periphery of tinned sheet iron bucket 1.
In the present embodiment, constitute the broadcast loop by the analog speakers shown in CD player 1, power amplifier 2 and the figure.
In concrete the enforcement, three analog speakers and loudspeaker 7 can be set on show stand 6 simultaneously, three analog speakers series connection mutually in the output loop of power amplifier 2, three tinned sheet iron buckets 3 that analog speakers adopts size to have nothing in common with each other, magnet steel 5 that corresponding outfit varies in size and the cable 4 that twines the different number of turns.Different configurations, the volume that can obtain to vary in size.In the concrete work, analog speakers and loudspeaker are by switch selection work.
Claims (2)
1, simple and easy loudspeaker science popularization showpiece, it is characterized in that constituting the broadcast loop by CD player (1), power amplifier (2) and analog speakers, described analog speakers adopts has bell-mouthed tinned sheet iron bucket (3), in described tinned sheet iron bucket (3), place magnet steel (5), the cable (4) that receives the output signal of power amplifier (2) is wrapped in the periphery of tinned sheet iron bucket (3).
2, simple and easy loudspeaker science popularization showpiece according to claim 1, it is characterized in that on show stand (6), being provided with loudspeaker (7) and three analog speakers, three analog speakers series connection mutually in the recessed road of output of power amplifier (2), three tinned sheet iron buckets (3) that analog speakers adopts size to have nothing in common with each other, magnet steel that corresponding outfit varies in size (5) and the cable (4) that twines the different number of turns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140376 CN2881844Y (en) | 2005-12-26 | 2005-12-26 | Scientific popularization exhibit of simple loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140376 CN2881844Y (en) | 2005-12-26 | 2005-12-26 | Scientific popularization exhibit of simple loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881844Y true CN2881844Y (en) | 2007-03-21 |
Family
ID=37881685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520140376 Expired - Fee Related CN2881844Y (en) | 2005-12-26 | 2005-12-26 | Scientific popularization exhibit of simple loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881844Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831267A (en) * | 2018-09-12 | 2018-11-16 | 青海省科学技术馆（青海省青少年科技中心） | A kind of exhibition article for demonstrating loudspeaker principle |
-
2005
- 2005-12-26 CN CN 200520140376 patent/CN2881844Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108831267A (en) * | 2018-09-12 | 2018-11-16 | 青海省科学技术馆（青海省青少年科技中心） | A kind of exhibition article for demonstrating loudspeaker principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |