CN201114730Y

CN201114730Y - Full-directive speaker

Info

Publication number: CN201114730Y
Application number: CNU2007201143489U
Authority: CN
Inventors: 祝天祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-07
Filing date: 2007-09-07
Publication date: 2008-09-10
Anticipated expiration: 2017-09-07

Abstract

The utility model relates to an omnidirectional loudspeaker which comprises a base and a plurality of loudspeaker units that are superposed up and down. The loudspeaker unit consists of a shell and a plurality of horn type loudspeakers. The horn type loudspeakers are arranged in the shell and distributed along the circumferential direction, which comprises a cartridge and a horn. The cartridge is arranged at the outer part of the shell, while a nozzle of the horn is oriented towards the center of the shell on the whole. The center of the shell is equipped with a reflector. The outer wall of the reflector forms an arc reflecting surface; the arc reflecting surface extends outwards and is connected with the outer wall of the loudspeaker unit into a whole. One side of the nozzle of the horn is sealed with the arc reflecting surface, while the other side of the nozzle of the horn is connected with a sealing plate. A sound mixing cavity is formed between the arc reflecting surface and the sealing plate. The omnidirectional loudspeaker adopts the arc reflecting surface, so that the sound can be pervaded at a certain degree by the reflection after being transmitted out of the horn, thus having no sound blind area and having good loudspeaker omni-directivity.

Description

Full directional loudspeaker

(1) technical field

The utility model relates to a kind of full directional loudspeaker.

(2) background technology

The general structure of common horn loudspeaker mainly comprises: driver (sound head), amplifier tube, reflecting drum, horn etc. wherein also have without reflecting drum.Its characteristics that amplify are that directive property is strong, and are highly sensitive, so generally be used for directed playback, comprise loudspeaker commonly used, and siren loudspeaker etc. all belong to similar structures.For some comparatively special use occasions, as air defence warning, prison alarm, the propaganda etc. of taking precautions against natural calamities, what need is existing higher sensitivity, the conforming public address set of extraordinary omnidirectional is arranged again, common horn loudspeaker is because directive property is too strong, sound can not be passed simultaneously to the four directions, be not desirable public address set obviously.In order to change this situation, in loudspeaker unit, some horn loudspeakers are circumferentially arranged earlier usually, again that each loudspeaker unit is vertically stacked, in the hope of obtaining the purpose that omnidirectional amplifies.Chinese patent 02260879.6 discloses a kind of full sensing horn loudspeaker, it comprises two discoid supports as pedestal up and down, the arc division board that to be provided with three above both sides between two discoid supports be the index curved surface, two adjacent arc division boards and two discoid support medial surfaces form the horn passage, amplifier tube is arranged in being provided with in the middle of each horn passage, the camber line shape reflecting drum that can amplify step by step, the driver of amplifier tube one end is contained in the arc column face, adjacent arc principal post kept man of a noblewoman tail connects into ring-type, the division board five equilibrium is fixed on the side of arc principal post face, hole on the arc principal post face both ends of the surface is connected with the fixedly liner plate of top and bottom respectively, and the top of two discoid supports and bottom are screwed with the fixedly liner plate of top and bottom respectively; Each sound-producing device is formed by a driver, an arc column face, an amplifier tube, a reflecting drum and a horn passage.Existing omnidirectional raises in device, the horn mouth all be level towards, do not bring into play the maximum efficiency of horn loudspeaker.

(3) utility model content

The full directional loudspeaker that provides a kind of directive property good is provided technical problem to be solved in the utility model.

Described full directional loudspeaker, comprise pedestal, some stacked loudspeaker units up and down, described loudspeaker unit comprises housing and some horn loudspeakers, horn loudspeaker is installed in the housing and circumferentially arranges, described horn loudspeaker comprises sound head and horn, described sound head is in the outside of housing, and the horn mouth is generally towards the housing center; Described housing center is provided with reflector, and the outer wall of reflector forms curved reflecting surface, and the housing outer wall that curved reflecting surface stretches out with loudspeaker unit is connected as a single entity; Horn mouth one side and curved reflecting surface sealing, horn mouth opposite side and sealing plate connect, and form the audio mixing chamber between curved reflecting surface and the sealing plate.

Further, described horn mouth top and curved reflecting surface sealing, horn mouth bottom and sealing plate connect.

The utility model has been owing to adopted curved reflecting surface, sound to go out the diffusion that obtains through reflection again behind the horn to a certain degree, the sound non-blind area, and the loud speaker omnidirectional is good.

(4) description of drawings

Fig. 1 is the structural representation of described full directional loudspeaker.

(5) embodiment

The utility model is described in further detail below in conjunction with embodiment, but protection range of the present utility model is not limited to this.

With reference to Fig. 1, a kind of full directional loudspeaker, comprise pedestal 1, some stacked loudspeaker units 2 up and down, described loudspeaker unit 2 comprises housing 3 and some horn loudspeakers 4, horn loudspeaker 4 is installed in the housing 3 and circumferentially arranges, described horn loudspeaker 4 comprises sound head 5 and horn 6, and described sound head 5 is in the outside of housing 3, and the horn mouth is generally towards housing 3 centers; Described housing 3 centers are provided with reflector 7, and the outer wall of reflector 7 forms curved reflecting surface 8, and the housing outer wall that curved reflecting surface 8 stretches out with loudspeaker unit is connected as a single entity; Described horn mouth top and curved reflecting surface 8 sealings, horn mouth bottom is connected with sealing plate 9, forms audio mixing chamber 10 between curved reflecting surface 8 and the sealing plate 9.

When the utility model used, sound was gone out by the sound hair, successively through horn chamber and audio mixing chamber, earlier through curved reflecting surface 8 reflections, was strengthened through adjacent housing outer wall reflection again.

Claims

1, a kind of full directional loudspeaker, comprise pedestal, some stacked loudspeaker units up and down, described loudspeaker unit comprises housing and some horn loudspeakers, horn loudspeaker is installed in the housing and circumferentially arranges, described horn loudspeaker comprises sound head and horn, it is characterized in that: described sound head is in the outside of housing, and the horn mouth is generally towards the housing center; Described housing center is provided with reflector, and the outer wall of reflector forms curved reflecting surface, and the housing outer wall that curved reflecting surface stretches out with loudspeaker unit is connected as a single entity; Horn mouth one side and curved reflecting surface sealing, horn mouth opposite side and sealing plate connect, and form the audio mixing chamber between curved reflecting surface and the sealing plate.

2, full directional loudspeaker as claimed in claim 1 is characterized in that: described horn mouth top and curved reflecting surface sealing, horn mouth bottom and sealing plate connect.