CN2927576Y

CN2927576Y - Topped loundspeaker system device

Info

Publication number: CN2927576Y
Application number: CN 200620023175
Authority: CN
Inventors: 宋呜; 华子兴
Original assignee: BEIJING 797TH SOUND Co Ltd
Current assignee: BEIJING 797TH SOUND Co Ltd
Priority date: 2006-06-30
Filing date: 2006-06-30
Publication date: 2007-07-25
Anticipated expiration: 2016-06-30

Abstract

The utility model relates to a roof-installation loudspeaker system unit, comprising a high pitch loudspeaker, a base-tone loudspeaker, an electrical frequency divider and a chamber. The utility model is characterized in that a reflecting disc is arranged in the axial direction of acoustic radiation of the base-tone loudspeaker, the bottom end of the reflecting disc is round, the middle part is upwardly bulged and the perisporium is arc-shaped; three supports are arranged upwardly on the periphery of bottom end and fixed with the chamber; the upper end of the fixed disc is round, wherein the middle part is down-bulged to form triangular pyramid and the fixing holes are arranged on each pyramidal face for installing the high pitch loudspeaker; the system unit is reasonably designed, provided with base-tone loudspeaker sound wave reflection disc and the fixed disc which can accommodate three high pitch loudspeakers of the same type; during working, the loudspeaker can make multi-direction acoustic radiation, realizing wide high frequency directivity and uniform distribution of the acoustic field, improving the sound articulation efficiency, enlarging the coverage range of acoustic field and thus has great practicability.

Description

Ceiling type speaker system device

Technical field

The utility model relates to a kind of loud speaker, and particularly a kind of high pitch directive property is wide, the sound overlay area is wide, sound field is evenly distributed and sound ceiling type speaker system device clearly.

Background technology

At present, ceiling type speaker system device adopts the combining structure of the high and low sound loudspeaker unit of single loudspeaker unit or coaxial direction mostly, the ceiling type speaker system device high pitch part directive property of this structure is narrower, sound can only cover in the limited axial region, cause the sound field skewness easily, make that the sound in some zone is unintelligible.

In order to overcome above-mentioned shortcoming, this creator is according to oneself practical experience and technical concept, after deliberation, exploitation, and has the utility model to produce eventually.

The utility model content

The utility model is that a kind of ceiling type speaker system device will be provided, with solution make that its high pitch directive property is wide, the sound overlay area is wide, sound field is evenly distributed and sound technical problem clearly.

It is such solving the problems of the technologies described above the technical scheme that is adopted:

A kind of ceiling type speaker system device, comprise high pitch loudspeaker, woofer, Active crossover device and cavity, it is characterized in that: in woofer acoustic radiation axial device a reflecting disc, the reflecting disc bottom is equipped with a fixed disk, and the fixed disk bottom is equiped with three high pitch loudspeakers that are connected in parallel;

This reflecting disc bottom is circular, and the middle part raises up, and it is circular-arc that perisporium is, and the bottom periphery upwards is provided with three supports, and fixes with cavity;

This fixed disk upper end is circular, and the middle part convexes to form the triangular cone downwards, and each conical surface is provided with the fixing hole that high pitch loudspeaker is installed.

The utility model is made up of cavity, woofer, Active crossover device, reflecting disc, fixed disk and high pitch loudspeaker.For improving the woofer intermediate frequency acoustic radiation direction of propagation, acoustic pressure is evenly distributed, at circular reflecting disc of woofer acoustic radiation axial device, three supports are set at periphery, be fixed on the cavity.For making high pitch directive property broadening, effectively obtaining uniform sound field distribution in the acoustic radiation regional extent, at fixed disk of reflecting disc bottom device, fixed disk external diameter size is consistent with the external diameter of reflecting disc, on each conical surface of fixed disk, offer the fixing hole of an installation high pitch loudspeaker, pore size is complementary with the high pitch loudspeaker bore of being installed, three high pitch loudspeakers that are installed on the fixed disk are connected in parallel, its lead-out wire two ends are connected with the high frequency output of Active crossover device, the lead-out wire of woofer is connected with the low frequency output of Active crossover device, makes its high pitch directive property wide thereby solved, the sound overlay area is wide, sound field is evenly distributed and sound technical problem clearly.

The utility model is simple in structure, and its advantage is as follows:

1, the utility model adopts perisporium to be circular-arc reflecting disc, effectively changes the direction of propagation of woofer intermediate frequency sound wave, and acoustic pressure is evenly distributed.

2, three conical surfaces of fixed disk of the present utility model are installed the high pitch loudspeaker of same type respectively, can make each high pitch loudspeaker simultaneously to the different directions acoustic emanation, realize broad high frequency directive property, uniformly sound field distribute, sound clearly, enlarged the coverage of sound field.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a reflecting disc perspective view of the present utility model.

Fig. 3 is a fixed disk perspective view of the present utility model.

Fig. 4 is a frequency response curve of the present utility model.

Embodiment

As shown in Figure 1, be structural representation of the present utility model, the embodiment of this ceiling type speaker system device, comprise a drum shape cavity 1, Active crossover device 2, sound absorption cotton 3, woofer 4, high pitch loudspeaker 7, outer cover 8, trip bolt 9 and connecting line 10, wherein, in woofer 4 acoustic radiation axial device a reflecting disc 5, reflecting disc 5 bottoms are equipped with a fixed disk 6, fixed disk 6 bottoms are equiped with three high pitch loudspeakers 7 that are connected in parallel;

As shown in Figure 2, these reflecting disc 5 bottoms are circular, and the middle part raises up, and it is circular-arc that perisporium is, and the bottom periphery upwards is provided with three supports 51, and fixing with drum shape cavity 1;

As shown in Figure 3, these fixed disk 6 upper ends are circular, and the middle part convexes to form triangular cone 61 downwards, and each conical surface 62 is provided with the fixing hole 63 that high pitch loudspeaker 7 is installed.

As shown in Figure 4, be frequency response curve of the present utility model, wherein curve A is 0 ° of axial frequency response curve, and curve B is 60 ° of frequency response curves of off-axis.

The utility model is in the fixedly Active crossover device 2 and the placement sound absorption cotton 3 of inwall of drum shape cavity 1, woofer 4 acoustic radiations towards outside and be fixed on the opening part of drum shape cavity 1, in the acoustic radiation axial device of woofer 4 reflecting disc 5, change the direction of propagation of woofer 4 Mid Frequency sound waves, acoustic pressure is evenly distributed.Reflecting disc 5 peripheries are provided with three supports 51, are fixed on the drum shape cavity 1.The location interval of the fixing hole 63 of the high pitch loudspeaker 7 on three conical surfaces 62 of fixed disk 6 is 120 °, and fixing hole 63 diameters are complementary with the bore of the high pitch loudspeaker of being installed 7.The high pitch loudspeaker 7 of three same types installing on fixed disk 6 is connected in parallel, and during this system and device work, energy is simultaneously to the different directions acoustic radiation, and high frequency directive property that acquisition is broad and uniform sound field distribute (as shown in Figure 4).Use connecting line 10 respectively woofer 4, high pitch loudspeaker 7 and Active crossover device 2 to be connected.Fixed disk 6 is installed in the bottom of reflecting disc 5.Outer cover 8 is a mesh-shape, is fixed on the drum shape cavity 1, plays protection and decoration function.

The utility model reasonable in design, installed the fixed disk of woofer acoustic reflection dish and three high pitch loudspeakers of the same type of energy device, make this system and device can be simultaneously to the different directions acoustic emanation in when work, realize broad high frequency directive property, obtain the even distribution of sound field, improve the definition of sound, enlarged the coverage of sound field.

Claims

1, a kind of ceiling type speaker system device, comprise high pitch loudspeaker, woofer, Active crossover device and cavity, it is characterized in that: in woofer acoustic radiation axial device a reflecting disc, the reflecting disc bottom is equipped with a fixed disk, and the fixed disk bottom is equiped with three high pitch loudspeakers that are connected in parallel.

2, ceiling type speaker system device according to claim 1 is characterized in that: this reflecting disc bottom is for circular, and the middle part raises up, and it is circular-arc that perisporium is, and the bottom periphery upwards is provided with three supports, and fixes with cavity.

3, ceiling type speaker system device according to claim 1 is characterized in that: this fixed disk upper end is for circular, and the middle part convexes to form the triangular cone downwards, and each conical surface is provided with the fixing hole that high pitch loudspeaker is installed.