CN204652627U

CN204652627U - Audio amplifier

Info

Publication number: CN204652627U
Application number: CN201520299718.5U
Authority: CN
Inventors: 顾康
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-05-11
Filing date: 2015-05-11
Publication date: 2015-09-16
Anticipated expiration: 2025-05-11

Abstract

The utility model relates to a kind of audio amplifier, and it comprises a casing, a Far Range bugle, a common bugle, a common bass horn and two common loudspeakers; The sound outlet end of described Far Range bugle and common bugle is fastened on the inwall of described casing respectively, the angle circumference that described Far Range bugle and common bugle and described cabinet wall are formed can regulate, described Far Range bugle is connected common loudspeaker described in respectively with the sound entrance point of common bugle, and the sound outlet end of described common bass horn is fixedly installed on described cabinet wall.The utility model is closely listened soft, far listens clear and structure is simple, easy to operate, cost is low.

Description

Audio amplifier

Technical field

The utility model relates to a kind of sound amplifier, particularly about a kind of audio amplifier.

Background technology

At present, classify from the public address angle of audio amplifier to sound amplifier, the sound amplifier on market can be divided three classes substantially:

First kind sound amplifier is common audio amplifier, as shown in Fig. 1 (a), common audio amplifier comprises common Horn 1 ', common loudspeaker 2 ', bass horn 3 ' and sound box bodies 4 ', owing to being all fixing common bugle in common audio amplifier, be therefore merely able to produce fixing short range public address range or fixing intermediate range public address range.In order to allow audio amplifier closely listen pleasing to the ear (international standard, 1 meter of distance detects), just high pitch must be pressed into close with the sensitivity of bass; Once far listen, high sound attenuation is faster than bass, just lacks high pitch so far listen.If improved by point handle high pitch volume, the audience near field can't stand again; If volume is improved by common loudspeaker box combination, not only audio amplifier increasing number causes cost to increase, and engineering is complicated, and can produce high frequency acoustic interference when combinationally using, and affects volume and tone color quality.In addition, a kind of more special common audio amplifier is also there is in prior art, that is: as shown in Fig. 1 (b), although this audio amplifier has more than 3 loudspeaker 1 〞 and bugle 2 〞, but there is no Far Range bugle, can not adjust respectively, when more can not ring, look after near field together, therefore, the purpose of design of this more special common audio amplifier is still for medium-long range public address.

Equations of The Second Kind sound amplifier is linear array audio amplifier, as shown in Fig. 1 (c), Far Range linear array bugle is installed in linear array audio amplifier, a uppermost audio amplifier high frequency sound wave projects far field audience, and near field audience looked after by a nethermost audio amplifier, so linear array audio amplifier must many combinationally use, this just makes it have installation and use trouble, require high, high in cost of production shortcoming to place and user, and common bugle can not be installed simultaneously in linear array audio amplifier, otherwise linear array audio amplifier high frequency can produce interference, loses the function of linear array audio amplifier.

3rd class sound amplifier is face array speaker, installs Far Range face array bugle, and can only face property combinationally use in the array speaker of face.Therefore, face array speaker the same with linear array audio amplifier have to install and use bother, high, high in cost of production shortcoming required to place and user.And can not install common bugle in the array speaker of face, otherwise face array speaker high frequency can produce interference, loses the function of face array speaker simultaneously.

As can be seen here, be necessary that development one is closely listened soft, far listen clear and that structure is simple, easy to operate audio amplifier.

Summary of the invention

For the problems referred to above, the purpose of this utility model is to provide one and closely listens soft, far listens clear and the audio amplifier that structure is simple, easy to operate, cost is low.

For realizing above-mentioned technical purpose, the utility model takes following technical scheme: a kind of audio amplifier, and it comprises a casing, a Far Range bugle, a common bugle, a common bass horn and two common loudspeakers; The sound outlet end of described Far Range bugle and common bugle is fastened on the inwall of described casing respectively, the angle circumference that described Far Range bugle and common bugle and described cabinet wall are formed can regulate, described Far Range bugle is connected common loudspeaker described in respectively with the sound entrance point of common bugle, and the sound outlet end of described common bass horn is fixedly installed on described cabinet wall.

Described Far Range bugle adopts linear array bugle to form half line array speaker, and when half line array speaker combinationally uses, vertically can only combine two half line array speaker, and during combination, two linear array bugles are adjacent, horizontal direction can not combine.

Described Far Range bugle adopts face array bugle to form demifacet array speaker, and when demifacet array speaker combinationally uses, vertically can only combine two demifacet array speaker, and during combination, two sides array bugle is adjacent, horizontal direction can combine as required.

Described Far Range bugle adopts a common bugle combination, described common bugle combination comprises plural second common bugle, all described second common bugles are fixedly installed on described cabinet wall according to order from top to bottom successively uniform intervals, described common bugle combination and the vertical distance of described common bugle be greater than described common bugle combine in more than the 3cm of spacing of adjacent two described second common bugles.

The utility model is owing to taking above technical scheme, it has the following advantages: 1, the utility model adopts Far Range bugle and common bugle due to comprehensive in common audio amplifier, frequency of sounding is close, Far Range bugle not only linear combination time can not interfere, and being highly suitable for remote public address, common bugle is applicable to closely public address, Far Range bugle and each responsible zones of different of common bugle, audio amplifier is closely listened soft, it is clear far to listen.2, the utility model is owing to combinationally using, and makes under the prerequisite that acoustic interference does not occur, and can increase volume or transmission range further.In sum, the utility model operation in use is very convenient; Although structurally many than common loudspeaker box combination quantity, than linear array audio amplifier or face array speaker number of combinations few a lot, and there is linear array audio amplifier or face array speaker far listens advantage clearly.The utility model not only cost of manufacture is low, and the middle-size and small-size indoor and outdoor performance that can be widely used in 1 ~ 35 meter of distance range is with meeting.

Accompanying drawing explanation

Fig. 1 (a) is loudspeaker box structure schematic diagram common in prior art;

Fig. 1 (b) is common loudspeaker box structure schematic diagram more special in prior art;

Fig. 1 (c) is prior art center line array speaker structural representation;

Fig. 2 is common bugle structural representation;

Fig. 3 is Far Range bugle structural representation;

Fig. 4 is bugle structural representation of the present utility model;

Fig. 5 is left TV structure schematic diagram of the present utility model;

Fig. 6 is main TV structure schematic diagram of the present utility model;

Fig. 7 be the utility model adopt linear array bugle time combinationally use schematic diagram;

Fig. 8 be the utility model adopt face array bugle time combinationally use schematic diagram.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in detail.

Existing audio amplifier bugle comprises common bugle and Far Range bugle substantially, and wherein, Far Range bugle comprises the common bugle of linear array bugle, face array bugle and more than the 30 centimetres degree of depth; As shown in Figure 2, the feature of common bugle is: sound presents spherical and sends from a passage.Its advantage is: vertical angle is large, within the scope of 30 ~ 120 degree, can look after near field and far field audience simultaneously; As shown in Figure 3, the feature of Far Range bugle is: sound divides some passages to send, and each passage not only can communicate but also can separate, and the channel path of high pitch top and the bottom is short, mid portion path length, finally makes sound present column face and sends.Its advantage is: vertical angle is little, within the scope of 6 ~ 9 degree, can look after far field audience.

As shown in Figure 4, principle of the present utility model is combinationally used Far Range bugle and common bugle, and send the sound of same frequency, can meet the normal audition of audience within the scope of 1 ~ 35 meter simultaneously, and not affect tonequality.

Based on above-mentioned principle, as shown in Figure 5, Figure 6, audio amplifier of the present utility model comprises casing 1, Far Range bugle 2, common bugle 3, common bass horn 4 and two common loudspeakers 5; The sound outlet end of Far Range bugle 2 and common bugle 3 is fastened on the inwall of casing 1 respectively, the angle circumference that Far Range bugle 2 and common bugle 3 and casing 1 inwall are formed can regulate, Far Range bugle 2 and the sound entrance point of common bugle 3 are connected a common loudspeaker 5 respectively, and the sound outlet end of common bass horn 4 is fixedly installed on casing 1 inwall.

In a preferred embodiment, Far Range bugle 2 can adopt linear array bugle, half line array speaker is formed when Far Range bugle 2 adopts linear array bugle, as shown in Figure 7, when half line array speaker combinationally uses, vertically can only combine two half line array speaker, and during combination, two linear array bugles are adjacent, horizontal direction can not combine.

In a preferred embodiment, Far Range bugle 2 can adopt face array bugle, demifacet array speaker is formed when Far Range bugle 2 adopts face array bugle, as shown in Figure 8, when demifacet array speaker combinationally uses, vertically can only combine two demifacet array speaker, and during combination, two sides array bugle is adjacent, horizontal direction can combine as required.

In a preferred embodiment, Far Range bugle 2 can adopt a common bugle combination, common bugle combination comprises plural second common bugle, all second common bugles are fixedly installed on casing 1 inwall according to order from top to bottom successively uniform intervals, the combination of common bugle and the vertical distance of common bugle 3 be greater than common bugle combine in more than the 3cm of spacing of adjacent two the second common bugles.

The utility model can singly only use, and also can combinationally use, the detailed process of two kinds of occupation modes is:

(1) when the utility model list only uses, operate identical with common audio amplifier, first, the utility model put in the plane or be placed on tripod; Then, the adjustment mode in the middle of prior art is adopted to adjust audio projection angle; Finally, open common bass horn 4 and common loudspeaker 5 respectively, when meeting-place only needs nearly sound not need sound far away, can by closing the common loudspeaker 5 that Far Range bugle 2 connect; When meeting-place only needs sound far away not need nearly sound, the common loudspeaker 5 that common bugle 3 connects can be closed;

(2) when needs increase volume or transmission range further, the utility model can be combinationally used, when the utility model combinationally uses, in two kinds of situation:

1), when the utility model list only uses, when the volume of sound or transmission range still can not be made to meet meeting-place audience's demand, an other half line array speaker can be placed at half line array speaker top, and the linear array bugle of two halves linear array audio amplifier is adjacent; In addition, when there is two-layer audience in meeting-place, need that half line array speaker pitching backward set high by two half line array speaker metas, its sound vertical direction is improved, aims at two layers of audience.

2) when half line array speaker combinationally uses, when the volume of sound or transmission range still can not be made to meet meeting-place audience's demand, demifacet array speaker can be combined, the level angle of demifacet array speaker is generally within the scope of 6 ~ 20 degree, need many demifacet array speaker combinations to increase horizontal public address angle, level angle is made to reach about 80 degree, on this basis, if the volume of sound or transmission range still can not be made to meet meeting-place audience's demand, so can in demifacet array speaker the demifacet array speaker of horizontal positioned more than one, the face array bugle of two demifacet array speaker of vertical combination is adjacent, in addition, when there is two-layer audience in meeting-place, need demifacet array speaker pitching backward high for position, its sound vertical direction is improved, aims at two layers of audience.

(3) in above-mentioned (2) 1) and 2) in two kinds of combinations, casing 1 upper end can also be placed on by after the linear combination of more than one linear array bugle respectively.

Above-described embodiment is only for illustration of the utility model; wherein the structure of each parts, connected mode and manufacture craft etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement, all should not get rid of outside protection range of the present utility model.

Claims

1. an audio amplifier, is characterized in that: it comprises a casing, a Far Range bugle, a common bugle, a common bass horn and two common loudspeakers; The sound outlet end of described Far Range bugle and common bugle is fastened on the inwall of described casing respectively, the angle circumference that described Far Range bugle and common bugle and described cabinet wall are formed can regulate, described Far Range bugle is connected common loudspeaker described in respectively with the sound entrance point of common bugle, and the sound outlet end of described common bass horn is fixedly installed on described cabinet wall.

2. audio amplifier as claimed in claim 1, is characterized in that: described Far Range bugle adopts linear array bugle to form half line array speaker.

3. audio amplifier as claimed in claim 1, is characterized in that: described Far Range bugle adopts face array bugle to form demifacet array speaker.

4. audio amplifier as claimed in claim 1, it is characterized in that: described Far Range bugle adopts a common bugle combination, described common bugle combination comprises plural second common bugle, all described second common bugles are fixedly installed on described cabinet wall according to order from top to bottom successively uniform intervals, described common bugle combination and the vertical distance of described common bugle be greater than described common bugle combine in more than the 3cm of spacing of adjacent two described second common bugles.