Bugle formula multiple spot excitation loudspeaker enclosure
Technical field
The present invention relates to a kind of loudspeaker enclosure, specifically a kind of bugle formula multiple spot excitation loudspeaker enclosure that loads bugle belongs to the electroacoustic techniques field.
Background technology
In the prior art, be applied to large-sized high-end LCD, PDP flat-panel TV set speaker product, generally adopt a plurality of loudspeaker units to form loudspeaker enclosures, to obtain wideer frequency response bandwidth and high, medium and low frequency range tonequality preferably.But, because the slimming trend of flat-panel TV set is obvious day by day, require supporting speaker product structure thinner, and traditional a plurality of loudspeaker units are integrated in the thinner space structure, are difficult to obtain better tonequality.Therefore, seek a kind of novel loudspeaker enclosure, by the permutation and combination of a plurality of loudspeaker units position in casing, obtain best frequency response curve and tonequality and become important unusually.
Summary of the invention
The objective of the invention is to overcome above shortcomings in the prior art, a kind of bugle formula multiple spot excitation loudspeaker enclosure is provided, its structure is ingenious rationally, adopt a plurality of high pitch loudspeakers unit, woofer unit to form the multiple spot driving source, and be loaded with bugle in front, high pitch loudspeaker unit, when keeping the loudspeaker enclosure slimming, can obtain the acoustics index of each frequency range optimum, also can keep preferably tonequality even the high pitch loudspeaker unit of loudspeaker enclosure is installed down on television set.
According to technical scheme provided by the invention: bugle formula multiple spot excitation loudspeaker enclosure, comprise casing, woofer unit and high pitch loudspeaker unit, it is characterized in that: the quantity of described woofer unit is at least two, and the quantity of high pitch loudspeaker unit is identical with the quantity of woofer unit; Described casing is the prolate type, offer the last installing hole that several distribute along its long axis direction on the upper surface of casing, offer the following installing hole that several distribute along its long axis direction on the lower surface of casing, it is described that installing hole is corresponding one by one with last installing hole down, the number of following installing hole, last installing hole is identical with the quantity of woofer unit, described woofer unit is installed in installing hole and the following installing hole, and the acoustic radiating direction of woofer unit is towards the casing top; A long side of described casing is provided with several side openings that distributes along its long axis direction, the number of described side opening is identical with the quantity of high pitch loudspeaker unit, described high pitch loudspeaker unit is installed in the side opening, and the acoustic radiating direction of high pitch loudspeaker unit is towards casing one side; Front, described high pitch loudspeaker unit is provided with bugle, and bugle is fastening to be installed on the side of casing, and bugle is provided with and high pitch loudspeaker unit horn one to one.
As a further improvement on the present invention, described casing mainly is made up of upper casing and lower casing, and the described installing hole of going up is opened on the upper casing, and following installing hole is opened on the lower casing; A long side of described upper casing is provided with first side opening, and long side corresponding on the described lower casing is provided with second side opening, and when upper casing and lower casing were formed casing to piecing together, first side opening and second side opening were formed complete side opening to piecing together.
As a further improvement on the present invention, described casing is provided with the conduit that box house and outside air are conducted.
As a further improvement on the present invention, described conduit is positioned at an end of long axis direction on the casing, and conduit outer end opening and high pitch loudspeaker unit are positioned on the same side of casing.
As a further improvement on the present invention, described casing mainly is made up of upper casing and lower casing, one end of described upper casing long axis direction extends to form first conduit trough by reinforcement, correspondence one end of described lower casing long axis direction extends to form second conduit trough by reinforcement, when upper casing and lower casing were formed casing to piecing together, first conduit trough and second conduit trough were formed complete conduit to piecing together.
As a further improvement on the present invention, the acoustic centre of source between adjacent high pitch loudspeaker unit distance should be smaller or equal to the length of high pitch loudspeaker unit long axis direction, and the acoustic centre of source distance between the adjacent woofer unit should be smaller or equal to three times of the diameter length of woofer unit.
As a further improvement on the present invention, the internal diameter of installing hole matches on the external diameter of described woofer single vowel basin ring and the casing, and sound basin ring places in the installing hole; The external diameter of described woofer unit bottom U iron or T iron matches with the internal diameter of following installing hole, and U iron or T iron place down in the installing hole.
As a further improvement on the present invention, the quantity of described woofer unit and high pitch loudspeaker unit is two, and two woofer unit, two high pitch loudspeaker unit are symmetricly set on the two ends of housing long axis direction respectively.
As a further improvement on the present invention, be provided with the back shock absorbing ring between the corresponding side opening on described high pitch loudspeaker unit and the casing, be provided with preceding shock absorbing ring between the horn on the described bugle and the corresponding high pitch loudspeaker unit.
As a further improvement on the present invention, described bugle is structure as a whole, and uses the fastening combination of screw between bugle and the casing.
The present invention compared with prior art, advantage is:Structure of the present invention is ingenious rationally, adopt two or more woofers unit and two or more high pitch loudspeakers unit to form multiple spot driving source system, and be loaded with bugle in front, high pitch loudspeaker unit, make loudspeaker enclosure when keeping slimming, can obtain the acoustics index of each frequency range optimum, also can keep preferably tonequality even the high pitch loudspeaker unit of loudspeaker enclosure is installed down on television set.
Description of drawings
Fig. 1 is the decomposition texture schematic diagram of the embodiment of the invention.
Fig. 2 is the perspective view of lower casing among Fig. 1.
Fig. 3 assembles for Fig. 1 but structural representation when not loading bugle.
Fig. 4 is of the present invention overlooking and acoustic centre of source schematic diagram.
Fig. 5 is frequency response curve comparison diagram of the present invention.
Description of reference numerals: 1-upper casing, 1a-last installing hole, 1b-first side opening, 1c-first conduit trough, 2-woofer unit, 3-lower casing, 3a-following installing hole, 3b-second side opening, 3c-second conduit trough, 4-back shock absorbing ring, 5-high pitch loudspeaker unit, 6-preceding shock absorbing ring, 7-bugle, 7a-horn, 8-screw, 9-conduit.
Embodiment
Below in conjunction with concrete drawings and Examples the present invention is further described.
As shown in the figure: the bugle formula multiple spot excitation loudspeaker enclosure among the embodiment mainly is made up of upper casing 1, woofer unit 2, lower casing 3, back shock absorbing ring 4, high pitch loudspeaker unit 5, preceding shock absorbing ring 6, bugle 7 and screw 8 etc.
As Fig. 1 ~ shown in Figure 3, the quantity of described woofer unit 2 is two, and the structural behaviour of two woofer unit 2 is just the same; The quantity of described high pitch loudspeaker unit 5 also is two, and the structural behaviour of two high pitch loudspeaker unit 5 is also just the same; Described casing is the prolate type, offer two last installing hole 1a that distribute along its long axis direction on the upper surface of casing, offer two following installing hole 3a that distribute along its long axis direction on the lower surface of casing, it is described that installing hole 3a is corresponding one by one with last installing hole 1a down, described woofer unit 2 is installed in installing hole 1a and the following installing hole 3a, and the acoustic radiating direction of woofer unit 2 is towards the casing top; A long side of described casing is provided with several side openings that distributes along its long axis direction, the number of described side opening is identical with the quantity of high pitch loudspeaker unit 5, described high pitch loudspeaker unit 5 is installed in the side opening, and the acoustic radiating direction of high pitch loudspeaker unit 5 is towards casing one side; 5 fronts, described high pitch loudspeaker unit are provided with the bugle 7 of integrative-structure, and bugle 7 usefulness screws 8 are fastening to be installed on the side of casing, and bugle 7 is provided with and high pitch loudspeaker unit 5 horn 7a one to one.
As shown in Figure 1, described casing is provided with the conduit 9 that box house and outside air are conducted, to strengthen the acoustic radiation efficiency of woofer unit 2.In the illustrated embodiment, described conduit 9 is positioned at an end of long axis direction on the casing, and conduit 9 outer end openings and high pitch loudspeaker unit 5 are positioned on the same side of casing.
As Fig. 1 ~ shown in Figure 3, in the embodiment of the invention, described casing mainly is made up of upper casing 1 and lower casing 3, and the described installing hole 1a that goes up is opened on the upper casing 1, and following installing hole 3a is opened on the lower casing 3; A long side of described upper casing 1 is provided with first side opening 1b, and long side corresponding on the described lower casing 3 is provided with second side opening 3b, and when upper casing 1 was pieced together the composition casing with 3 pairs of lower casings, first side opening 1b and second side opening 3b formed complete side opening to piecing together.One end of described upper casing 1 long axis direction extends to form first conduit trough 1c by reinforcement, correspondence one end of described lower casing 3 long axis directions extends to form second conduit trough 3c by reinforcement, when upper casing 1 was pieced together the composition casing with 3 pairs of lower casings, first conduit trough 1c and second conduit trough 3c formed complete conduit 9 to piecing together.
In the embodiment of the invention, specifically as Fig. 1 ~ shown in Figure 3, the internal diameter of installing hole 1a matches the mode that installs and fixes of described woofer unit 2 on the external diameter of woofer unit 2 sound basin rings and the casing, and sound basin ring places in the installing hole 1a; The external diameter of described woofer unit 2 bottom U iron matches with the internal diameter of following installing hole 3a, and U iron places down in the installing hole 3a.
In the embodiment of the invention, described two woofer unit 2, two high pitch loudspeaker unit 5 are symmetricly set on the two ends of housing long axis direction respectively, and the acoustic radiating direction of high pitch loudspeaker unit 5 and the acoustic radiating direction of woofer unit 2 be not in the same side.As shown in Figure 4, acoustical behavior in order to ensure loudspeaker enclosure, in the described bugle formula multiple spot excitation loudspeaker enclosure, the acoustic centre of source between the adjacent high pitch loudspeaker unit 5 should be smaller or equal to the length Δ of high pitch loudspeaker unit 5 long axis directions apart from x, and the acoustic centre of source distance y between the adjacent woofer unit 2 should be smaller or equal to three times of the diameter length φ of woofer unit 2.
In order further to improve the acoustical behavior of loudspeaker enclosure, be provided with shock absorbing ring 4 afterwards between the corresponding side opening on described high pitch loudspeaker unit 5 and the casing, be provided with preceding shock absorbing ring 6 between the horn 7a on the described bugle 7 and the corresponding high pitch loudspeaker unit 5.
As shown in Figure 5, through the reality test, the bugle formula multiple spot excitation loudspeaker enclosure in the embodiment of the invention obviously is better than not loading the multiple spot excitation loudspeaker enclosure of bugle 7 in the frequency response of 1K ~ 10KHz.