The present disclosure pertains to a horn speaker, and more specifically, pertains to an enclosure of a speaker having multiple integrally formed horn parts.
In general, horn speakers are known as speakers that emit sound from a diaphragm into an external space through a horn. Although horn speakers are more efficient than directly emitting speakers and can control the directionality of the sound through the horn shape, the reproduction range of sound is relatively narrow, and they are mainly used as speakers for mid- to high-range sound. In addition, the speaker causes the diaphragm to vibrate with an electrical frequency, and the sound from vibration of the diaphragm is transmitted through the air. The wavelength of the sound hit by the air spreads in the desired direction through the speaker's horn or affects the sound volume. This horn speaker is constituted by an electroacoustic conversion unit. It is a piezoelectric horn speaker if the diaphragm of the electroacoustic conversion unit is vibrated by a piezoelectric element; and it is a dynamic horn speaker if the diaphragm is vibrated by a voice coil, which is vibrated by electromagnetic force.
Such speaker devices have a structure for reproducing the voice by converting, into vibration of the vibration member, the voice signal current reproduced by sound signal generators such as audio equipment, public address (PA) equipment for broadcasting, and sirens. For such speaker devices, development of a structure for faithful restoration of the original sound is actively being carried out.
The traditional speaker device described above is shown in prior art Korean Patent Application No. 10-2009-0088885. In considering such traditional speaker, as shown in
However, according to the prior art structural feature, it has a structure of the horn (40) and the duct (20) being coupled in one direction. Here, the efficiency of the speaker is improved as the length of the horn (40) becomes longer, given that its conformity to the air is improved accordingly. However, since the horn (40) is installed in a separate duct (20) for the conventional structure, it limits the size and length of the horn (40) and reduces the efficiency of the speaker unit (30). Also, it is difficult to perform multiple sound reproduction, by classifying the sound of multiple bands with one speaker unit (30). In addition, since the source sound of the speaker unit (30) is emitted only through the discharge outlet of the horn installed in the front direction, there is an issue wherein diffusion of the source sound is not smoothly transmitted towards the rear.
The disclosed horn speaker has been developed in order to resolve the problems mentioned above. The horn speaker configured according to the present disclosure includes a plurality of horns that are integrally formed in a primary case and a secondary case of a horn speaker enclosure. The horn speaker enclosure contains a plurality of speaker units. Furthermore, since a plurality of discharge outlets of the horn speaker are formed in the front direction of the primary case and the rear direction of the secondary case, the transmission effect of emission of the sound produced by the sound source and occurring due to the speaker units to the outside through the horn speaker can be maximized, while the ambience and the sound quality are improved, by minimizing transmission of the sound diffusion and noise.
In addition, the sound separation and the clarity are improved by integrating the horn speaker in a single body.
Also, the size of the horn speaker enclosure is decreased by simplifying the structure, which thereby provides a production cost reduction as well as a reduction in the inconvenience of the component assembly.
For achieving the above purpose, the horn speaker according to the present disclosure includes an enclosure comprised of a primary case and a secondary case for housing a speaker unit that converts electrical signals to sound signals and generates sound waves, and a plurality of horn parts that are formed inside of the enclosure; and the plurality of horn parts comprise a primary half of the horn and a secondary half of the horn.
In addition, the primary half of the horn is comprised of a partition, a discharge outlet and a seating groove. The partition guides the source sound discharged from a speaker unit to an ejection port, the discharge outlet expands the source sound discharged from the speaker unit and discharges it, and the seating groove collects the source sound discharged from the speaker unit.
Also, the secondary half of the horn is equipped with a seating part. The seating part extends from one side of the secondary half of the horn to the other side of the primary half of the horn.
Preferably, the primary case has a plurality of the primary half of the horn.
Preferably, the secondary case is furnished with a plurality of the secondary half of the horn.
Preferably, the primary case has a primary half and a secondary half of the horn.
Preferably, the secondary case has a primary half and a secondary half of the horn.
Preferably, the number of speaker units installed is the same as or fewer than the number of the horn parts.
Preferably, a plurality of horn parts are formed into a duct-shaped structure when the primary case and the secondary case are coupled.
The horn speaker according to the present disclosure with the characteristics described above improves the ambience and the sound quality by minimizing the transmission of sound diffusion and noise, while maximizing the sound transmission effect when the source sound generated by the speaker unit and collected in the seating groove is discharged through the discharge outlet of the horn by integrally forming a plurality of horns in the primary case and secondary case of the enclosure.
Also, the size of the product and difficulty associated with parts assembly, as well as the cost of production, are reduced by simplifying the structure.
In addition, the reproduction band of sound can be extended by forming a horn in a duct structure and adding sound pressure by combining it with the sound emitted from the resonance of the duct in a forward and backward direction. Since the amplitude of the resonance point is reduced in the same band, there is an advantage in that distortion of the sound is reduced.
Advantages and features of the disclosed horn speaker and ways to accomplish them should be made clear by referring to embodiments that are later described in detail alongside with attached drawings. However, the present invention is not limited to the embodiments described below, but is embodied in a variety of mutually different forms.
The present embodiments described in this specification are provided to enable construction of the disclosed horn speaker and to fully disclose the scope of the invention to skilled persons. Also, the present invention is merely defined by the scope of the claims. Therefore, in some embodiments, well-known components, well-known actions and well-known techniques are not specifically described so as to prevent the present invention from being interpreted in an ambiguous manner.
Throughout the specification, the same reference numbers refer to the same structural components. Also, terms used (mentioned) in this specification are merely for explaining the embodiments, and shall not limit the present invention. In this specification, the singular forms include plural forms unless they are specifically mentioned in the phrase. In addition, components and actions mentioned with ‘includes (or, furnishes)’ do not exclude the existence or addition of one or more of other components and actions.
If there are no separate definitions, all terms used in this specification (including technical and scientific terms) can be used in a sense commonly understood by skilled persons. Also, terms defined in commonly used dictionaries should not be ideally or excessively interpreted unless they are defined.
Hereinafter, the technical features of the disclosed embodiments will be described in detail with reference to the accompanying drawings.
As shown in the drawings, a horn speaker (50) according to the present disclosure includes a speaker unit (56a) that generates a sound wave by converting an electric signal into a sound wave signal; an enclosure (58) comprised of primary case (52) and secondary case (54) for furnishing the speaker unit (56a); and a plurality of horn parts (110, 120) formed inside of the enclosure (58). The plurality of horn parts (110, 120) include a primary half section (110a) of the horn part (110) and a secondary half section (120a) of the horn part (120). Primary half section (110a) of the horn part (110) includes a seating groove (111a) that collects the source sound discharged from the speaker unit (56a), a discharge outlet (112a) that expands the source sound collected on the seating groove (111a) and discharges the source sound towards the outside of the enclosure (58), and a partition wall (113a) that guides the source sound collected in the seating groove (111a) to the discharge outlet (112a). Secondary half section (120a) of the horn part (120) extends from one side of secondary half section (120a) of the horn part (120) to the other side of primary half section (110a) of the horn part (110) and includes a seating location (121a) where the speaker unit (56a) is seated.
In reference to
Further, in reference to
Further, in reference to
Therefore, when coupling together primary case (52) and secondary case (54), a duct structure having a curved surface shape is formed for primary and secondary half sections (110a, 120a) of the horn parts (110, 120) and, more specifically, it is in a hollow form and serves to guide the source sound discharged from the speaker units (56a, 56b) to the outside. Furthermore, the seating location (121a) is provided with a space in which the speaker unit (56a) can be seated and installed. In addition, when discharge outlets (112a, 112b) of a plurality of secondary sections (120a, 120b) of the horn part (120) are formed on one side of the enclosure (58), secondary half sections (120a, 120b) of the horn part (120) are formed in a same way described above on the other side in a manner that is consistent with the placement of the discharge outlets (112a, 112b). Additionally, the seating location (121a) formed in secondary case (54) has a flexibility quality and improves the loudness by preventing the source sound generated from the speaker unit (56a) from being leaked because it is attached with high adhesion and due to its flexible quality when primary case (52) and secondary case (54) are coupled to each other.
The speaker unit (56a) configured according to the present disclosure can include components such as a permanent magnet, coil, and diaphragm. In such a speaker unit (56a), a magnetic field is generated when current flows in the coil, and the coil is vibrated by a magnetic field produced from the current flow-generated magnetic field and the permanent magnet. This causes the diaphragm connected to the coil to move, vibrate the air and emit sound. Furthermore, the speaker unit (56a) is formed in a semicircular shape, but can be designed, without limitations, in various shapes such as elliptical, rectangular and circular. Also, the material of permanent magnet is an alloy including aluminum, nickel and cobalt; and since this is typical, a detailed description is omitted.
In addition, the rectangular primary case (52) and secondary case (54) of the enclosure (58) mentioned above can be formed in not only a rectangular shape, but also in various forms. These various forms include a circle, a rectangle, a square, and a streamline and are not limited to forms described in this specification.
The coupling method of the enclosure (58) mentioned above entails use of case fasteners (400a) that are formed around the edges of the inner surfaces at diagonally opposite corners of primary case (52) and secondary case (54). As shown in
In the embodiment mentioned above, the enclosure (58) has been explained by constituting each primary case (52) and secondary case (54) as separate components; however, the present disclosure is not limited to this. The fact that primary case (52) and secondary case (54) can be formed as an integrated integral case should be understood by persons with ordinary skill in the art.
The horn speaker (50), according to other embodiments, can be configured in a similar matter to the embodiment described above, and primary and secondary cases (52, 54) can simultaneously form the discharge outlet (112) of primary half section (110a) of the horn part (110) at both the front and rear. Specifically, primary and secondary cases (52, 54) can emit the source sound and the sound by making the direction of the discharge outlet (112) face the front and rear through forming the primary and secondary horn parts (110, 120) at one end and the other end of each inner surface.
In other words, the primary half section (110a) and the secondary half section (120b) are formed in the primary case (52), and the secondary half section (120a) and the primary half section (110b) may be correspondingly formed in the secondary case (54).
More specifically, primary case (52) has the integrally formed primary half section (110a) of the horn part (110). Primary half section (110a) of the horn part (110) amplifies the sound through guttural sound reinforcement and is formed on one side of the inner surface of primary case (52). Herein, primary half section (110a) of the horn part (110) that is integrally formed on the inner surface of primary case (52) is formed together with a seating groove (111a) where the speaker unit (56a) can be seated. The seating groove (111a) has a structure for collecting the source sound generated from the speaker unit (56a) and is preferably formed to correspond to the shape and the size of the speaker unit (56a).
In addition, primary half section (110a) of the horn part (110) formed in primary case (52) extends beyond the partition wall (113a) on the opposite side of the seating groove (111a) and to the outer surface of the discharge outlet (112a) and is formed as its area is radially and gradually enlarged. Herein, the partition wall (113a) has a structure for performing a function of a guttural sound reinforcement to prevent the source sound collected in the seating groove (111a) from being dispersed and can be formed at an even higher height than that of the seating groove (111a).
In addition, primary case (52) has secondary half section (120a) of the horn part (120) formed close to the other side of primary half section (110a) of the horn part (110). Secondary half section (120a) of the horn part (120) has a seating location (121a), and secondary horn part (120) has a hook shape that extends from one side of primary case (52) to the other side of secondary case (54) toward the seating groove (111a) formed on primary half section (110a) of the horn part (110) of secondary case (54), which is mentioned later. Also, the end of the hook-shaped secondary half section (120a) of the horn part (120) has an integrally formed seating location (121a). It is preferable that the seating location (121a) be formed to correspond to the shape and the size of aforementioned seating groove (111a) and speaker unit (56a). More specifically, it is coupled with a curved surface by being matched with the shape of the integrally formed primary half section of the horn part (110) of secondary case (54), which is mentioned later, and the shape of a duct structure is formed when primary case (52) and secondary case (54) are coupled together. Also, a space for the speaker unit (56a) to be rested and installed is established on the upper part of the seating location (121a) formed at the end of secondary half section (120a) of the horn part (120). Furthermore, the seating location (121a) formed in primary case (52) has a flexibility quality and improves the loudness by preventing the source sound generated from the speaker unit (56a) from being leaked because it is attached with a high adhesion due to its flexible quality when primary case (52) and secondary case (54) are coupled together.
Secondary case (54), according to other embodiments of the present disclosure, can be comprised corresponding to the embodiment described above, and primary and secondary cases (52, 54) can simultaneously form the discharge outlet (112a) of primary half section (110a) of the horn part (110) at the front and rear. Specifically, primary and secondary cases (52, 54) can emit the source sound by making the direction of the discharge outlet (112a) face the front and rear through forming primary and secondary half sections (110a, 120a) of the horn parts (110, 120) at one end and the other end of each inner surface.
More specifically, secondary case (54) has integrally formed primary half section (110a) of the horn part (110). Primary half section (110a) of the horn part (110) amplifies the sound through guttural sound reinforcement and is formed on one side of the inner surface of secondary case (54). Herein, primary half section (110a) of the horn part (110) that is integrally formed on the inner surface of secondary case (54) is formed together with a seating groove (111a) where the speaker unit (56a) can be seated. The seating groove (111a) has a structure for collecting the source sound generated from the speaker unit (56a) and is preferably formed to correspond to the shape and the size of the speaker unit (56a).
Horn part (110) formed in secondary case (54) extends from the seating groove (111a) beyond the opposing partition wall (113a) to the outer surface of the discharge outlet (112a); the discharge outlet (112a) is formed in such a manner that the surface area is gradually enlarged radially on the surface. Herein, the partition wall (113a) is of a structure for performing a guttural sound reinforcement function so that sound sources collected in the seating groove (111a) are not dispersed, and it is formed higher than the height of the seating groove (111a).
In addition, secondary case (54) holds secondary half section (120a) of the horn part (120) formed close to the other side of the horn part (110). The secondary half section (120a) of horn part (120) has a hook shape that extends from one side of secondary case (54) towards the seating groove (111a) of primary case (52), being extended from one side to the other. Also, the end of the hook-shaped secondary half section (120a) of the horn part (120) has an integrally formed seating location (121a). It is preferable that the seating location (121a) be formed to correspond to the shape and the size of seating groove (111a) and speaker unit (56a) that are formed in the primary case (52). More specifically, it is coupled with a curved surface by being matched with the shape of the integrally formed primary half section (110a) of the horn part (110) of aforementioned primary case (52), and the shape of a duct structure is formed when primary case (52) and secondary case (54) are coupled together. Also, a space for the speaker unit (56a) to be rested and installed is established on the upper part of the seating location (121a) formed at the end of secondary half section (120a) of the horn part (120). Furthermore, the seating location (121a) formed in secondary case (54) has a flexible quality and improves the loudness by preventing the source sound generated from the speaker unit (56a) from being leaked because it is attached with a high adhesion due to its flexible quality when primary case (52) and secondary case (54) are coupled together.
To explain the coupling method of the enclosure (58) according to other embodiments of the present disclosure mentioned above, case fasteners (400a) are formed around the edges of the inner surfaces at diagonally opposite corners of primary case (52) and secondary case (54) and, when primary case (52) and secondary case (54) are mutually coupled, they are coupled by the case fastening members (400). At this time, each of integrally formed primary and secondary half sections (110a, 120a; 110b, 120b) of the horn parts (110, 120) of primary and secondary cases (52, 54) is comprised in a duct structure, and this can extend the reproduction band of sound by favorably collecting the sound source being discharged to the front and the rear of the speaker units (56a, 56b). Since the amplitude of the resonance point in the same band is decreased, the distortion of the sound is reduced.
More specifically, when primary and secondary cases (52, 54) are coupled together, the seating location (121a) integrally formed on the inner surface of primary case (52) is installed corresponding to the seating groove (111a) integrally formed on the inner surface of secondary case (54), which is formed on one side. In addition, the seating location (121b) integrally formed on the inner surface of secondary case (54) is installed corresponding to the seating groove (111b) integrally formed on the inner surface of primary case (52), which is formed on the other side. Furthermore, each primary and secondary half sections (110a, 120a; 110b, 120b) of the primary and secondary horn parts (110, 120) formed in primary and secondary cases (52, 54) has a discharge outlet (112a, 112b) on the other side of each other. Then, the speaker unit (56a) is installed in an established space at the upper part of the seating location (121a) of primary case (52) and secondary case (54). Unit fasteners (500a) are formed around the seating groove (111a) and seating location (121a) of primary and secondary cases (52, 54). In order to prevent the source sound from being leaked from the upper part of the seating location (121a) of primary and secondary cases (52, 54), a separate sealing member (300) is initially seated at the upper part of the seating location (121a) when the speaker unit (56a) is coupled with the unit fastening members (500). Herein, the sealing member (300) is used for maintaining the airtightness, similar to a gasket, and is a typical component part; therefore, the detailed description thereof is omitted.
Hereby, the speaker unit (56a) seated on each seating location (121a, 121b) of primary and secondary cases (52, 54) is installed by being seated on the upper part of each seating location (121a, 121b) of primary and secondary cases (52, 54). Herein, the number of speaker units (56) can be installed corresponding to the number of discharge outlets (112) of integrally formed primary and secondary half sections of the horn parts (110, 120) and can be installed, without limitation, at an amount equal to or fewer than that of the primary and secondary horn parts (110, 120). Moreover, primary and secondary cases (52, 54) can be made of any commonly used speaker materials such as wood, metal, synthetic resin and paper.
Therefore, as depicted in
As such, the ambience and sound quality can be improved by minimizing the transmission of sound diffusion and noise, while maximizing the sound transmission effect when the source sound generated by the speaker unit is discharged through the discharge outlet of the horn by integrally forming the horn in primary case and secondary case of the enclosure. Moreover, the separation and clarity of sound is improved through having discharge outlets of a plurality of horns to be formed to face one side and the other side.
In addition, the structure thereof has been simplified and the product size has been reduced, so that the inconvenience of assembling parts and the cost of production are reduced. Furthermore, the reproduction band of sound can be extended by forming a horn in a duct structure and adding sound pressure by combining it with the sound discharged from the resonance of the duct in a forward direction and a backward direction. Since the amplitude of the resonance point is reduced in the same band, sound distortion can be reduced.
The dimensions of the enclosure (58) provide a compact packaging profile for the horn speaker (50). The minimized thickness dimension of the enclosure (58) makes possible its installation in the confined volumetric space at the front end of a ground transportation vehicle. This is especially true for newly designed motor vehicles, in which the clearance between the radiator assembly and the front grille/bumper has been reduced as compared to that of legacy motor vehicles.
Thus, the disclosed horn speaker (50) is capable of forming enclosure (58) with a minimized thickness dimension, resulting in a compact packaging profile to be installed within a defined volume space.
The above description is illustrative of the disclosed horn speaker. Since embodiments described in the specification are not meant to limit the technical idea of the present invention, but rather for the purposes of illustration, it should be possible for person with ordinary skill in the art to which the invention pertains to make various changes and modifications without deviating from the scope of technical ideas of the present invention. Therefore, the scope of protection for the present invention is interpreted by the matters described in the claims, and it should also be interpreted for technical matters within the same scope to be included in the scope of rights of the present invention.
Number | Date | Country | Kind |
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10-2017-0064608 | May 2017 | KR | national |