CN204316720U - A kind of audio amplifier - Google Patents
A kind of audio amplifier Download PDFInfo
- Publication number
- CN204316720U CN204316720U CN201420759694.2U CN201420759694U CN204316720U CN 204316720 U CN204316720 U CN 204316720U CN 201420759694 U CN201420759694 U CN 201420759694U CN 204316720 U CN204316720 U CN 204316720U
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- CN
- China
- Prior art keywords
- sound channel
- audio amplifier
- compression unit
- loudspeaker
- extension
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- 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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Abstract
The utility model discloses a kind of audio amplifier, comprise casing, bass unit and Horn is provided with in casing, the rear portion of Horn is provided with loudspeaker, Horn comprises bugle body, bugle body comprises a up-small and down-big trumpet-shaped extension, there is in extension loudspeaker cavity, advantage extension is provided with a compression unit, the upper end of compression unit is connected with the aditus laryngis of loudspeaker, the lower end of compression unit is connected with the upper end of extension, in compression unit, there is sound channel, sound channel is connected with loudspeaker cavity, arbitrary cross section of sound channel is rectangle, the horizontal direction bus of the inwall of sound channel is segmented involute from bottom to top, the vertical direction bus of the inwall of sound channel is segmented involute from bottom to top.Advantage is that this audio amplifier has outstanding directive property, and Dispersion is good, sound transmission distance, sound pressure uniform.
Description
Technical field
The utility model relates to a kind of audio frequency apparatus, especially relates to a kind of audio amplifier.
Background technology
Audio amplifier common on the market generally comprises outside casing at present, bass unit and Horn is provided with in casing, usually the Horn be arranged in audio amplifier generally adopts more common structure, namely this Horn comprises source of sound rear end and amplifies front end, and the front end that amplifies is generally the horn mouth of a taper.During work, sound wave is passed through the horn mouth of taper by sound set by Horn, sound transmission can be made to obtain distant.The Horn of this structure, only has simple horn-like cavity, be difficult to when frequency change to ensure that its level points to the consistency with vertical sensing, the sound causing the position close to audio amplifier to be heard is louder and clearer, and the sound heard away from the position of audio amplifier is more overcast.
The seat designs of current cinema is generally spread from centre to both sides in the horizontal direction, rise highly successively from front to back in vertical direction, and movie theatre audio amplifier is generally mounted in the right and left of motion picture screen, the audio amplifier of said structure is quoted at the cinema, acoustic pressure is uneven, be sitting in the spectators of movie theatre front near audio amplifier position, comparatively resonant voice can be heard, the sound that the spectators being sitting in movie theatre rear position hear is then more overcast, good audio frequency communication effect cannot be reached, cause the overall result of broadcast of movie theatre not good.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of sound pressure uniform and the audio amplifier that its horizontal directivity and vertical directivity remain unchanged substantially when frequency change.
The utility model solves the problems of the technologies described above adopted technical scheme:
A kind of audio amplifier, comprise casing, bass unit and Horn is provided with in described casing, the rear portion of described Horn is provided with loudspeaker, described Horn comprises bugle body, described bugle body comprises a up-small and down-big trumpet-shaped extension, there is in described extension loudspeaker cavity, described extension is provided with a compression unit, the upper end of described compression unit is connected with the aditus laryngis of described loudspeaker, the lower end of described compression unit is connected with the upper end of described extension, in described compression unit, there is sound channel, described sound channel is connected with described loudspeaker cavity, arbitrary cross section of described sound channel is rectangle, the horizontal direction bus of the inwall of described sound channel is segmented involute from bottom to top, the vertical direction bus of the inwall of described sound channel is segmented involute from bottom to top.
The lower port of described sound channel and the upper port of described loudspeaker cavity match, and the upper port of described sound channel and the aditus laryngis of described loudspeaker match.The audio frequency of loudspeaker enters into sound channel by aditus laryngis, the upper port of sound channel and the aditus laryngis of loudspeaker match, make the audio frequency sent by loudspeaker all can enter into sound channel, the lower port of sound channel and the upper port of loudspeaker cavity match, the audio frequency entering sound channel compression all can enter into loudspeaker cavity and carry out expansion amplification, improve the operating efficiency of bugle, result of broadcast is good.
Described compression unit and described extension are wholely set.Be wholely set and save assembly process, improve production efficiency.
Arbitrary cross section of described loudspeaker cavity is rectangle, and the horizontal direction bus of the inwall of described loudspeaker cavity is segmented involute from top to bottom, and the vertical direction bus of the inwall of described loudspeaker cavity is segmented involute from top to bottom.By the sound that the loudspeaker cavity of this structure plays back, good tone color, penetration power is strong.
The wall thickness everywhere of described compression unit is all consistent, and the wall thickness everywhere of described extension is all consistent.Wall thickness is consistent, makes manufacture fairly simple, the easy demoulding.
The material of described compression unit is reinforced plastic glass fibre.Adopt reinforced plastic glass fibre to manufacture compression unit, make compression unit good corrosion resistance, mechanical strength high.
The material of described bugle body is ABS plastic.Bugle body adopts ABS plastic manufacture, is easy to processing, low cost of manufacture, and product size is stablized, and lustrous surface is good.
The outer wall of described bugle body is provided with the reinforcement of the bugle body outer wall longitudinal extension described in many edges.Outside bugle body, reinforcement is set, when bugle rear body connection loudspeaker sends the sound of high frequency, increase the mechanical strength of bugle body, bugle body is not vibrated, thus do not affect the quality of high pitch, avoid occurring high pitch distortion or producing the faults such as noise, ensure that voice quality.
The rear portion of described casing is provided with mounting bracket.Mounting bracket is used for the installation of audio amplifier.
Compared with prior art, the utility model has the advantage of: the Horn that this structure is set in audio amplifier, first the audio frequency that loudspeaker sends enters into sound channel, sound channel through ad hoc structure compresses, concentrate again and enter into extension and expand, so avoid the possibility that the consume of efficiency and distortion are played up, the high-frequency sound of this audio amplifier is made to have outstanding directive property, horizontal directivity and vertical directivity remain unchanged substantially when audio frequency changes, Dispersion is good, sound transmission distance, sound pressure uniform, level points to >=100 °, time frequency response balanced decay≤6dB, the audio amplifier of this structure is applied in cinema, no matter be near the position of this audio amplifier or the position away from this audio amplifier, the sound effect that spectators hear is all more consistent, make the overall result of broadcast of film good.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model;
Fig. 2 is the cutaway view at A-A place in Fig. 1;
Fig. 3 is the stereogram of the utility model alt bugle;
Fig. 4 is the front view of the utility model alt bugle;
Fig. 5 is the cutaway view at B-B place in Fig. 4;
Fig. 6 is the cutaway view at C-C place in Fig. 4.
Embodiment
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
Embodiment one: as shown in Figures 1 to 6, a kind of audio amplifier, comprise casing 1, bass unit 11 and Horn is provided with in casing 1, the rear portion of Horn is provided with loudspeaker 4, Horn comprises bugle body, bugle body comprises a up-small and down-big trumpet-shaped extension 2, there is in extension 2 loudspeaker cavity 21, extension 2 is provided with a compression unit 3, the upper end of compression unit 3 is connected with the aditus laryngis 41 of loudspeaker 4, the lower end of compression unit 3 is connected with the upper end of extension 2, there is in compression unit 3 sound channel 31, sound channel 31 is connected with loudspeaker cavity 21, arbitrary cross section of sound channel 31 is rectangle, the horizontal direction bus 5 of the inwall of sound channel 31 is segmented involute from bottom to top, the vertical direction bus 6 of the inwall of sound channel 31 is segmented involute from bottom to top.
In this particular embodiment, the lower port of sound channel 31 and the upper port of loudspeaker cavity 21 match, and the upper port of sound channel 31 and the aditus laryngis 41 of loudspeaker 4 match.The audio frequency of loudspeaker 4 enters into sound channel 31 by aditus laryngis 41, the upper port of sound channel 31 and the aditus laryngis 41 of loudspeaker 4 match, the audio frequency sent by loudspeaker 4 is made can all to enter into sound channel 31, the lower port of sound channel 31 and the upper port of loudspeaker cavity 21 match, the audio frequency entering sound channel 31 compression all can enter into loudspeaker cavity 21 and carry out expansion amplification, improve the operating efficiency of bugle, result of broadcast is good.
In this particular embodiment, arbitrary cross section of loudspeaker cavity 21 is rectangle, and the horizontal direction bus 7 of the inwall of loudspeaker cavity 21 is segmented involute from top to bottom, and the vertical direction bus 8 of the inwall of loudspeaker cavity 21 is segmented involute from top to bottom.By the sound that the loudspeaker cavity 21 of this structure plays back, good tone color, penetration power is strong.
In this particular embodiment, the wall thickness everywhere of compression unit 3 is all consistent, and the wall thickness everywhere of extension 2 is all consistent.Wall thickness is consistent, makes manufacture fairly simple, the easy demoulding.
In this particular embodiment, the material of compression unit 3 is reinforced plastic glass fibre.Adopt reinforced plastic glass fibre to manufacture compression unit, make the good corrosion resistance of compression unit 3, mechanical strength high.
In this particular embodiment, the outer wall of bugle body 1 is provided with many reinforcements 9 along bugle body 1 outer wall longitudinal extension.Reinforcement 9 is set outside bugle body 1, when bugle body 1 rear portion connection loudspeaker sends the sound of high frequency, increase the mechanical strength of bugle body 1, bugle body 1 is not vibrated, thus do not affect the quality of high pitch, avoid occurring high pitch distortion or producing the faults such as noise, ensure that voice quality.
In this particular embodiment, the rear portion of casing 1 is provided with mounting bracket 12.Mounting bracket 12 is for the installation of audio amplifier.
Embodiment two: other parts are identical with embodiment one, its difference is that the material of bugle body 1 is ABS plastic.Bugle body 1 adopts ABS plastic manufacture, is easy to processing, low cost of manufacture, and product size is stablized, and lustrous surface is good.
Claims (9)
1. an audio amplifier, comprise casing, bass unit and Horn is provided with in described casing, the rear portion of described Horn is provided with loudspeaker, described Horn comprises bugle body, described bugle body comprises a up-small and down-big trumpet-shaped extension, there is in described extension loudspeaker cavity, it is characterized in that described extension being provided with a compression unit, the upper end of described compression unit is connected with the aditus laryngis of described loudspeaker, the lower end of described compression unit is connected with the upper end of described extension, in described compression unit, there is sound channel, described sound channel is connected with described loudspeaker cavity, arbitrary cross section of described sound channel is rectangle, the horizontal direction bus of the inwall of described sound channel is segmented involute from bottom to top, the vertical direction bus of the inwall of described sound channel is segmented involute from bottom to top.
2. a kind of audio amplifier as claimed in claim 1, it is characterized in that the lower port of described sound channel and the upper port of described loudspeaker cavity match, the upper port of described sound channel and the aditus laryngis of described loudspeaker match.
3. a kind of audio amplifier as claimed in claim 1, is characterized in that described compression unit and described extension are wholely set.
4. a kind of audio amplifier as claimed in claim 1, it is characterized in that arbitrary cross section of described loudspeaker cavity is rectangle, the horizontal direction bus of the inwall of described loudspeaker cavity is segmented involute from top to bottom, and the vertical direction bus of the inwall of described loudspeaker cavity is segmented involute from top to bottom.
5. a kind of audio amplifier as claimed in claim 1, it is characterized in that the wall thickness everywhere of described compression unit is all consistent, the wall thickness everywhere of described extension is all consistent.
6. a kind of audio amplifier as claimed in claim 1, is characterized in that the material of described compression unit is reinforced plastic glass fibre.
7. a kind of audio amplifier as claimed in claim 1, is characterized in that the material of described bugle body is ABS plastic.
8. a kind of audio amplifier as described in claim 1 or 7, the outer wall that it is characterized in that described bugle body is provided with the reinforcement of the bugle body outer wall longitudinal extension described in many edges.
9. a kind of audio amplifier as claimed in claim 1, is characterized in that the rear portion of described casing is provided with mounting bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759694.2U CN204316720U (en) | 2014-12-05 | 2014-12-05 | A kind of audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759694.2U CN204316720U (en) | 2014-12-05 | 2014-12-05 | A kind of audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204316720U true CN204316720U (en) | 2015-05-06 |
Family
ID=53139014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420759694.2U Expired - Fee Related CN204316720U (en) | 2014-12-05 | 2014-12-05 | A kind of audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204316720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604176A (en) * | 2017-01-25 | 2017-04-26 | 深圳市创锐实业有限公司 | Loudspeaker box |
-
2014
- 2014-12-05 CN CN201420759694.2U patent/CN204316720U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106604176A (en) * | 2017-01-25 | 2017-04-26 | 深圳市创锐实业有限公司 | Loudspeaker box |
| CN106604176B (en) * | 2017-01-25 | 2023-11-03 | 深圳市创锐智汇科技有限公司 | Sound box |
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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: 20150506 Termination date: 20171205 |