CN203872354U - Straight-through horn megaphone - Google Patents
Straight-through horn megaphone Download PDFInfo
- Publication number
- CN203872354U CN203872354U CN201420237740.2U CN201420237740U CN203872354U CN 203872354 U CN203872354 U CN 203872354U CN 201420237740 U CN201420237740 U CN 201420237740U CN 203872354 U CN203872354 U CN 203872354U
- Authority
- CN
- China
- Prior art keywords
- loud speaker
- urceolus
- outer cylinder
- horn
- megaphone
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a straight-through horn megaphone comprising a handle, a rear cover, an outer cylinder and a loudspeaker. The loudspeaker is arranged in a position which is in the rear cover and at the joint of the rear cover and the outer cylinder. A pipe plug is arranged at a throat opening which is in the outer cylinder and at the joint of the outer cylinder and the rear cover. A middle cylinder connected with the pipe plug is arranged in the outer cylinder. A throat opening sounding surface is formed between the throat opening of the outer cylinder and the pipe plug. The outer cylinder, the pipe plug and the middle cylinder jointly constitute a straight-through horn structure which directly unfolds outward from the throat opening sounding surface along the arc surface of the outer cylinder. The straight-through horn megaphone adopts a straight-through structure, which avoids the easy-to-occur noise problems of ordinary folding horns such as standing wave, acoustic wave phase offset and acoustic interference. Easy-to-distort parts of sound such as the low-frequency part and the high-frequency part can be amplified by an audio frequency compensation circuit. Therefore, the sensitivity of horns is high, the sound quality and speech articulation are improved, and the inherent defects of ordinary folding horns are fundamentally changed.
Description
Technical field
The utility model relates to horn megaphone, especially a kind of through type horn megaphone.
Background technology
Horn megaphone is commonly called as hand-held megaphone, because it is lightweight, easy to carry, it is simple to use, is a kind of being popular and widely used sound intensifier material.Common horn megaphone adopts foldable structure conventionally, sound shrillness, and tonequality is fuzzy, and sound magnification distortion is serious.The reason of this lower tone can be from collapsible horn structure and two aspect analyses of technical indicator.In structure, common horn is accordion structure, and sound carrys out back reflective in horn, form standing wave, and the high frequency of sound is difficult to lay out, its megaphone cellar area is little, add very little back cavity volume, the low frequency of the sound of cannot resetting, so audio distortion is serious.In technical indicator, due to its foldable structure restriction, even if use audio compensating circuit to improve the multiplication factor of low frequency and high-frequency sound signal, the frequency bandwidth that sound amplifies is also difficult to produce good result in this foldable structure, therefore, the frequency band of common this foldable structure horn megaphone audio amplifier circuit is very narrow, and distortion is very large.
Utility model content
In order to solve the problems of the technologies described above, the purpose of this utility model is: provide that a kind of tonequality is good, bandwidth, speech articulation is high, electro-acoustic conversion efficiency is high through type horn megaphone.
The technical scheme that the utility model adopts is: a kind of through type horn megaphone, include handle, back cover, urceolus and loud speaker, described loud speaker is arranged in back cover and the junction of urceolus, the aditus laryngis position being connected with back cover in described urceolus is provided with a throat taps, in described urceolus, be also provided with the middle cylinder being connected with throat taps, between the aditus laryngis position of described urceolus and throat taps, form aditus laryngis sounding face, described urceolus, throat taps and middle cylinder common combination have formed one and along urceolus cambered surface, have outwards directly launched the through type horn structure of radiation from aditus laryngis sounding face.
Further, between described urceolus aditus laryngis position and throat taps, formed aditus laryngis sounding face area and the ratio of diaphragm of loudspeaker area equal the ratio of acoustic impedance with the diaphragm of loudspeaker mechanical impedance of diaphragm of loudspeaker load.
Further, also include audio compensating circuit, the output of described audio compensating circuit is connected to power amplifier, inputs to the input of loud speaker through the sound of audio compensation after amplifying.
Further, described audio compensating circuit includes low frequency amplifier section and High frequency amplification part.
Further, described loud speaker is direct radiator type full frequency speaker.
The beneficial effects of the utility model are: the utility model adopts straight-through structure, has avoided common collapsible horn easily to produce noise, the souffle problems such as standing wave, sound wave phase deviation, sound wave interference; The grade amplification of easy distorted portion of sound low frequency part and radio-frequency head can be used audio compensating circuit, and then horn sensitivity is higher, tonequality and speech articulation improve, and has fundamentally changed the inherent shortcoming of common collapsible horn.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is operation principle schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
With reference to Fig. 1, a kind of through type horn megaphone, include handle 6, back cover 5, urceolus 2 and loud speaker 1, described loud speaker 1 is arranged in back cover 5 and the junction of urceolus 2, in described urceolus 2, be provided with a throat taps 3 with the aditus laryngis position of back cover 5 junctions, in described urceolus 2, be also provided with the middle cylinder 4 being connected with throat taps 3, between the aditus laryngis position of described urceolus 2 and throat taps 3, form aditus laryngis sounding face, described urceolus 2, throat taps 3 and middle cylinder 4 common combinations have formed one and along urceolus 2 cambered surfaces, have outwards directly launched the through type horn structure of radiation from aditus laryngis sounding face.
Middle cylinder 4 can built-in power, saves space; Back cover 5 is connected with urceolus 2, closed protective megaphone circuit part, and handle 6 is connected with urceolus 2, back cover 5 lower edges, plays hand-held effect.
Through type horn basic structure has effectively overcome the inherent shortcoming of the collapsible horns such as standing wave, sound wave interference, sound wave phase deviation, and then compensating circuit can be suitable at through type horn megaphone.
Be further used as preferred embodiment, between described urceolus 2 aditus laryngis positions and throat taps 3, formed aditus laryngis sounding face and the ratio of loud speaker 1 vibrating diaphragm area equal the ratio of acoustic impedance with the loud speaker 1 vibrating diaphragm mechanical impedance of loud speaker 1 vibrating diaphragm load.
Between described urceolus 2 aditus laryngis positions and throat taps 3, the ratio of formed aditus laryngis sounding face and the ratio of loud speaker 1 vibrating diaphragm area and the acoustic impedance of loud speaker 1 vibrating diaphragm load and loud speaker 1 vibrating diaphragm mechanical impedance is close or equate, can play the effect that promotes air compressing ratio and efficiency, expand playback frequency band.
Be further used as preferred embodiment, also include audio compensating circuit, the output of described audio compensating circuit is connected to power amplifier, inputs to the input of loud speaker 1 through the sound of audio compensation after amplifying.
Be further used as preferred embodiment, described audio compensating circuit includes low frequency amplifier section and High frequency amplification part.
With reference to Fig. 2, source of sound audio signals such as () MP3, recording, microphone, alarms first passes through equalizer, and equalizer compensates low frequency and the HFS of input source of sound, and then input work is put row into and amplified, and has amplified audio signal and has exported loud speaker to.Adopt the audio amplifier circuit of high and low compensation, the audio frequency that can effectively improve whole horn amplifies frequency bandwidth, thereby has further increased the definition that voice amplify.
Be further used as preferred embodiment, described loud speaker 1 is direct radiator type full frequency speaker.
More than that better enforcement of the present utility model is illustrated, but the utility model is created and is not limited to described embodiment, those of ordinary skill in the art can also make all equivalents or replacement under the prerequisite without prejudice to the utility model spirit, and the distortion that these are equal to or replacement are all included in the application's claim limited range.
Claims (5)
1. a through type horn megaphone, include handle (6), back cover (5), urceolus (2) and loud speaker (1), described loud speaker (1) is arranged in back cover (5) and the junction of urceolus (2), it is characterized in that: the aditus laryngis position being connected with back cover (5) in described urceolus (2) is provided with a throat taps (3), in described urceolus (2), be also provided with the middle cylinder (4) being connected with throat taps (3), between the aditus laryngis position of described urceolus (2) and throat taps (3), form aditus laryngis sounding face, described urceolus (2), throat taps (3) and middle cylinder (4) common combination have formed one and along urceolus (2) cambered surface, have outwards directly launched the through type horn structure of radiation from aditus laryngis sounding face.
2. a kind of through type horn megaphone according to claim 1, is characterized in that: between described urceolus (2) aditus laryngis position and throat taps (3), the ratio of formed aditus laryngis sounding face area and loud speaker (1) vibrating diaphragm area equals the ratio of acoustic impedance and loud speaker (1) the vibrating diaphragm mechanical impedance of loud speaker (1) vibrating diaphragm load.
3. a kind of through type horn megaphone according to claim 1, it is characterized in that: also include audio compensating circuit, the output of described audio compensating circuit is connected to power amplifier, inputs to the input of loud speaker (1) through the sound of audio compensation after amplifying.
4. a kind of through type horn megaphone according to claim 3, is characterized in that: described audio compensating circuit includes low frequency amplifier section and High frequency amplification part.
5. a kind of through type horn megaphone according to claim 1, is characterized in that: described loud speaker (1) is direct radiator type full frequency speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420237740.2U CN203872354U (en) | 2014-05-09 | 2014-05-09 | Straight-through horn megaphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420237740.2U CN203872354U (en) | 2014-05-09 | 2014-05-09 | Straight-through horn megaphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203872354U true CN203872354U (en) | 2014-10-08 |
Family
ID=51653271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420237740.2U Withdrawn - After Issue CN203872354U (en) | 2014-05-09 | 2014-05-09 | Straight-through horn megaphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203872354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270706A (en) * | 2014-05-09 | 2015-01-07 | 中国人民武装警察部队政治部文化工作和网络宣传教育中心 | Straight-through horn megaphone |
| CN106686510A (en) * | 2017-03-10 | 2017-05-17 | 湖南大平安安全科技有限公司 | Straight-through type loudspeaker |
-
2014
- 2014-05-09 CN CN201420237740.2U patent/CN203872354U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270706A (en) * | 2014-05-09 | 2015-01-07 | 中国人民武装警察部队政治部文化工作和网络宣传教育中心 | Straight-through horn megaphone |
| CN104270706B (en) * | 2014-05-09 | 2018-07-06 | 中国人民武装警察部队政治部文化工作和网络宣传教育中心 | A kind of through type horn megaphone |
| CN106686510A (en) * | 2017-03-10 | 2017-05-17 | 湖南大平安安全科技有限公司 | Straight-through type loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20180706 |