Loudspeaker

Abstract

The utility model discloses a loudspeaker. The loudspeaker comprises a box body, a ceiling support, a plurality of sound production units and a guide pipe. The ceiling bracket is arranged at the top of the box body; the sound production units are mounted on the box body in the circumferential direction of the box body and are used for outputting audios to the outer side of the box body; the guide pipe is installed in the box body and comprises an air inlet and an air outlet, the air inlet is communicated with the interior of the box body, and a first avoiding hole used for being communicated with the air outlet is further formed in the box body. The beneficial effects of the application are that the installation is more convenient, the uniformity of the sound field is better, the sound quality is more excellent, and the listening experience of students can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to a loudspeaker. Background Art

[0002] In modern education, the sound effect in the classroom has a crucial impact on students' listening experience.

[0003] In the related art, the classroom sound system usually adopts a unidirectional sound emission method, that is, the speakers are installed in the front of the classroom, and the sound emitted by the speakers propagates through the air to the back of the classroom. However, this unidirectional sound emission method has many problems, such as limited sound coverage and easy occurrence of auditory fatigue. The 360-degree omnidirectional sound system can solve the above problems to a certain extent. This system realizes uniform 360-degree coverage of sound by arranging multiple speakers in the room. For example, some schools install multiple speakers in large classrooms and adjust the angle and volume of each speaker to achieve uniform distribution of sound.

[0004] However, the 360-degree omnidirectional sound system has a high installation cost, and in actual use, due to columns or windows in the classroom, sound waves may be affected by reflection and scattering, and the uniformity of the sound field is still difficult to guarantee. Summary of the Utility Model

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a loudspeaker, which is more convenient to install, has better sound field uniformity, better sound quality, and is beneficial to improving students' listening experience.

[0006] The utility model provides a loudspeaker, which includes a box body, a ceiling bracket, a plurality of sound-emitting units, and a guiding tube. The ceiling bracket is arranged on the top of the box body; the plurality of sound-emitting units are installed on the box body along the circumferential direction of the box body, and the sound-emitting units are used to output audio to the outside of the box body; the guiding tube is installed in the box body and includes an air inlet and an air outlet, the air inlet is communicated with the inside of the box body, and a first avoidance hole for communicating the air outlet is also opened on the box body.

[0007] In some embodiments, a second avoidance hole is opened on the side peripheral wall of the box body to avoid the audio output port of the sound-emitting unit.

[0008] In some embodiments, the sound-emitting unit has a positioning flange extending in a direction away from the center of the audio output port at the edge of the audio output port; wherein, the positioning flange is used to abut against the outer surface of the side peripheral wall.

[0009] In some embodiments, the loudspeaker further includes a side net assembly arranged at the second avoidance hole.

[0010] In some embodiments, the side net assembly includes a connected side net body and a side net mounting member, and the side net mounting member is used for mounting at the second avoidance hole; a raised edge protruding from the surface of the side net body is provided at the circumferential edge of the side net body, and the raised edge can be bent to be pressed against the side net mounting member.

[0011] In some embodiments, the guiding tube is configured as an arc tube extending in the circumferential direction.

[0012] In some embodiments, air inlets are provided at both ends of the guiding tube in its extending direction, and an air outlet is provided on the tube wall of the guiding tube and is located between the two air inlets.

[0013] In some embodiments, the side peripheral wall is inclined downward and inward.

[0014] In some embodiments, a wire passing hole is provided on the top wall of the box body; the loudspeaker further includes a main board interface accessory for electrically connecting the sound generating unit, and is used for covering the upper part of the wire passing hole;

[0015] The ceiling mounting bracket is provided on the side of the main board interface accessory facing away from the box body.

[0016] In some embodiments, the loudspeaker further includes an infrared remote control device electrically connected to the sound generating unit, and is provided on the outer surface of the side peripheral wall or the bottom wall of the box body.

[0017] Compared with the prior art, the loudspeaker provided in this embodiment has the following advantages: (1) The loudspeaker provided in this embodiment is mounted on the top of the classroom through a ceiling mounting bracket, and multiple sound generating units are integrated in one box body, making the sound field in the classroom more uniform, improving the sound coverage and uniformity, and at the same time being convenient for installation, which is beneficial to reducing the design cost and installation cost, having higher versatility, and being more suitable for educational institutions with limited budgets; (2) A guiding tube is provided inside the box body, and the guiding tube communicates with the inside of the box body through the air inlet. The air mass in the guiding tube will flow directionally as the air inside the box body vibrates, and is pushed out through the air outlet and the first avoidance hole. The directional movement of the air mass in the guiding tube will radiate sound pressure, enhance the sound effect, improve the sound quality, and thus improve the students' listening experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 is an exploded view of the loudspeaker according to an embodiment of the present utility model from one perspective;

[0020] Figure 2 is an exploded view of the loudspeaker according to an embodiment of the present utility model from another perspective;

[0021] Figure 3 is a structural schematic diagram of the loudspeaker according to an embodiment of the present utility model from one perspective;

[0022] Figures 4 - 9 is a structural schematic diagram of the loudspeaker according to an embodiment of the present utility model from different perspectives.

[0023] Reference numerals:

[0024] Loudspeaker 100,

[0025] Cabinet 1, side peripheral wall 11, first avoidance hole 111, second avoidance hole 112, sunk groove 113, top wall 12, wire passing hole 121, bottom wall 13, light-transmitting circular ring 131;

[0026] Ceiling suction bracket 2;

[0027] Sound generating unit 3, positioning flanging 31;

[0028] Guide tube 4, air inlet 41, air outlet 42;

[0029] Side net assembly 5, side net body 51, protruding edge 511, side net mounting member 52;

[0030] Main board interface accessory 6;

[0031] Control assembly 7, infrared remote control device 71, infrared display circuit board 711, interface plastic cover 712, screen sticker 713, control circuit board 72, interface circuit board 73. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as a limitation of the present utility model.

[0033] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] The following refers to Figures 1 - 9 Describe the speaker 100 according to an embodiment of the present utility model.

[0036] Embodiment 1

[0037] As Figure 1 And Figure 2 As shown, this embodiment provides a speaker 100, which includes a box body 1, a ceiling bracket 2, a plurality of sound - generating units 3, and a guide tube 4.

[0038] The ceiling bracket 2 is arranged on the top of the box body 1. The plurality of sound - generating units 3 are installed on the box body 1 along the circumferential direction of the box body 1, and the sound - generating units 3 output audio to the outside of the box body 1. The guide tube 4 is installed inside the box body 1 and includes an air inlet 41 and an air outlet 42. The air inlet 41 communicates with the inside of the box body 1, and a first avoidance hole 111 for communicating with the air outlet 42 is also provided on the box body 1.

[0039] As Figure 3As shown, when the installer is debugging and installing, the ceiling bracket 2 can install the entire speaker 100 on the ceiling of the classroom or on the ceiling joist at the top of the classroom. The sound - emitting unit 3 outputs audio from the upper side of the classroom and towards the outside of the cabinet 1, which helps to avoid the blocking of sound waves by the seats in the classroom. The sound - emitting units 3 are arranged along the circumferential direction of the cabinet 1 to spread the sound field in different directions of the classroom, making the sound fields in all directions more uniform.

[0040] It should be further noted that the sound - emitting unit 3 drives the surrounding air to vibrate together, thereby forming and propagating sound. The sound - emitting unit 3 is installed on the cabinet 1, and the vibration of the sound - emitting unit 3 will also drive the air inside the cabinet 1 to vibrate together. In this application, multiple sound - emitting units 3 are arranged in the same cabinet 1, and the multiple sound - emitting units 3 jointly drive the air inside the cabinet 1 to move. A guide tube 4 is arranged inside the cabinet 1, and the guide tube 4 communicates with the inside of the cabinet 1 through the air inlet 41. The air mass in the guide tube 4 will flow directionally along with the vibration of the air inside the cabinet 1 and is pushed out through the air outlet 42 and the first avoidance hole. The directional movement of the air mass in the guide tube 4 will radiate sound pressure, enhance the sound effect, improve the sound quality, and thus improve the students' listening experience.

[0041] Compared with the prior art, the speaker 100 provided in this embodiment has the following advantages: (1) The speaker 100 provided in this embodiment is installed on the top of the classroom through the ceiling bracket 2, and multiple sound - emitting units 3 are integrated in one cabinet 1, making the sound field within the classroom more uniform, improving the sound coverage and uniformity. At the same time, it is easy to install, which helps to reduce the design cost and installation cost, has higher versatility, and is more suitable for educational institutions with limited budgets; (2) A guide tube 4 is arranged inside the cabinet 1, and the guide tube 4 communicates with the inside of the cabinet 1 through the air inlet 41. The air mass in the guide tube 4 will flow directionally along with the vibration of the air inside the cabinet 1 and is pushed out through the air outlet 42 and the first avoidance hole. The directional movement of the air mass in the guide tube 4 will radiate sound pressure, enhance the sound effect, improve the sound quality, and thus improve the students' listening experience.

[0042] As Figure 1 shown, further, the second avoidance hole 112 opened on the side peripheral wall 11 of the cabinet 1 is used to avoid the audio output port 30 of the sound - emitting unit 3, which can reduce the interference of the cabinet 1 on the audio output, enhance the sound effect, improve the sound quality, and thus improve the students' listening experience.

[0043] As Figure 1As shown, further, a sunk groove 113 recessed from the outer surface to the inner surface is provided on the outer surface of the side peripheral wall 11, and the second avoidance hole 112 is opened on the sunk groove 113. The sound generating unit 3 has an audio output port 30, and a positioning flange 31 extending away from the center of the audio output port 30 is formed at the edge of the audio output port 30 of the sound generating unit 3; wherein, the positioning flange 31 can abut against the bottom wall 13 of the sunk groove 113, further improving the convenience of assembling the speaker 100; meanwhile, reducing the flow rate of the air flow inside the box body 1 from the second avoidance port.

[0044] As Figure 1 and Figure 2 shown, further, a first fastening hole is provided on the positioning flange 31, and a second fastening hole is provided on the bottom wall 13 of the sunk groove 113. A fastener passes through the first fastener and the second fastener to fix the sound generating unit 3 on the box body 1.

[0045] Embodiment 2

[0046] This embodiment is basically the same as Embodiment 1, the difference being that: the speaker 100 further includes a side net assembly 5 provided at the second avoidance hole 112.

[0047] As Figure 1 and Figure 2 shown, further, the speaker 100 further includes a side net assembly 5, and the side net assembly 5 is provided at the second avoidance hole 112. The side net assembly 5 is aligned with the audio output port 30 of the sound generating unit 3. The side net assembly 5 can prevent dust from falling on the sound generating unit 3 and protect the sound generating unit 3, and also plays a role in decoration and beautification to a certain extent.

[0048] It should be noted that although the side net assembly 5 will affect the audio output of the sound generating unit 3, this influence is not obvious, so this embodiment does not conflict with the above limitation of the second avoidance hole 112.

[0049] As Figure 1 and Figure 2 shown, further, the side net assembly 5 includes a connected side net body 51 and a side net mounting member 52, and the side net mounting member 52 can be mounted at the second avoidance hole 112. A raised edge 511 protruding from the surface of the side net body 51 is provided at the circumferential edge of the side net body 51, and the raised edge 511 can be bent to press against the side net mounting member 52.

[0050] As Figure 1 and Figure 2 shown, in specific operation, the side net body 51 is sleeved into the side net mounting member 52, and the raised edge 511 of the side net body 51 is bent to fix the side net body 51 and the side net mounting member 52 into a whole, and then it is mounted at the second avoidance hole 112 of the box body 1.

[0051] Embodiment III

[0052] This embodiment is basically the same as Embodiment I, and further defines the structure and shape of the guiding tube 4.

[0053] As Figure 1 and Figure 2 shown, further, the guiding tube 4 extends in the circumferential direction, reducing the friction generated when the air mass flows, enhancing the sound effect, improving the sound quality, and thus improving the students' listening experience.

[0054] As Figure 1 and Figure 2 shown, further, air inlets 41 are provided at both ends of the guiding tube 4 in its extending direction, and the air outlet 42 is provided on the tube wall of the guiding tube 4 and located between the two air inlets 41. Thereby, the gas flow in the guiding tube 4 can be increased, the sound effect can be further enhanced, the sound quality can be improved, and thus the students' listening experience can be improved.

[0055] Embodiment IV

[0056] As Figures 1 - 3 shown, this embodiment is basically the same as Embodiment I, the difference being that: the side peripheral wall 11 of the box body 1 is arranged to be inclined downward and inward, and the sound generating unit 3 can emit sound by spreading outward at a certain angle, making the sound spread more evenly.

[0057] Embodiment V

[0058] As Figure 1 shown, this embodiment is basically the same as Embodiment I, the difference being that: a wire passing hole 121 is provided on the top wall 12 of the box body 1, and the loudspeaker 100 further includes a main board interface accessory 6 for electrically connecting the sound generating unit 3. The main board interface accessory 6 is used to cover the upper part of the wire passing hole 121, and the electrical connection wire of the sound generating unit 3 is connected to the main board interface accessory 6 through the wire passing hole 121. The ceiling bracket 2 is arranged on the side of the main board interface accessory 6 away from the box body 1. Thus, the structure of the whole loudspeaker 100 is more compact. The main board interface accessory 6 can cover the wire passing hole 121, reducing the air flow inside the box body 1 from flowing through the wire passing hole 121.

[0059] As Figure 1 shown, further, the loudspeaker 100 further includes an infrared remote control device 71 electrically connected to the sound generating unit 3. The infrared remote control device 71 is arranged on the outer surface of the side peripheral wall 11 or the outer surface of the bottom wall 13 of the box body 1 to receive the control instructions of the user for the loudspeaker 100, improving the convenience of use.

[0060] Next, a specific embodiment will be described according to Figures 1 - 9 to describe a specific embodiment.

[0061] This embodiment provides a loudspeaker 100, which includes a cabinet 1, a ceiling bracket 2, four sound - producing units 3, and a guiding tube 4.

[0062] As Figure 1 、 Figure 6 shown, the cabinet 1 includes a top cover, a front shell, and a bottom shell. Among them, the top cover forms the top wall 12 of the cabinet 1, the front shell forms the side - peripheral wall 11 of the cabinet 1, and the bottom shell forms the bottom wall 13 of the cabinet 1. Both the upper and lower sides of the front shell are open, and the top cover and the bottom shell are covered at the openings of the front shell and are hermetically connected to the front shell. The cabinet 1 can be made of ABS plastic and assembled into a semi - spherical structure with a radius of 215 mm. The cabinet 1 also includes a light - transmitting ring 131. The bottom shell and the light - transmitting ring 131 are respectively inserted into the front shell from the bottom opening of the front shell and fixed with screws inside.

[0063] As Figure 3 、 Figures 7 - 9 shown, in a cross - section perpendicular to the up - and - down direction, the cross - sectional area of the front shell gradually increases. The side - peripheral wall 11 of the front shell includes four inclined surfaces connected to each other and inclined with respect to the up - and - down direction. Each inclined surface is provided with a sunk groove 113, and a second avoidance hole 112 is opened in the sunk groove 113. The sound - producing unit 3 is arranged inclined with respect to the up - and - down direction at the sunk groove 113. The four sound - producing units 3 are inserted from the inside of the front shell and fixed with fasteners, thus forming a device that emits sound at a certain angle and diffuses outward in all directions.

[0064] The second avoidance holes 112 are arranged on the front shell in an annular array, and the sound - producing units 3 are installed on the front shell in an annular array.

[0065] The loudspeaker 100 further includes four side - net assemblies 5, and one side - net assembly 5 is aligned with one sound - producing unit 3.

[0066] There are two guiding tubes 4. The front shell is provided with two first avoidance holes 111 above the second avoidance holes 112. The two guiding tubes 4 are respectively snapped into the two first avoidance holes 111, that is, one guiding tube 4 is snapped into one first avoidance hole 111, and the other guiding tube 4 is snapped into the other first avoidance hole 111. The two avoidance holes are symmetrically arranged on the front shell, and the two guiding tubes 4 are symmetrically installed inside the front shell.

[0067] The infrared remote - control device 71 is fixedly connected to the outer surface of the front shell. The infrared remote - control device 71 includes an infrared display circuit board 711, an interface plastic cover 712, and a screen sticker 713. The infrared remote - control device 71 is used for remotely controlling functions such as sound playback.

[0068] The top cover and the front shell are fixed with screws to form a sealed whole. The electrical connection wires of the sound generating component are led out from the middle round hole of the top cover and connected to the interface circuit board 73 and the control circuit board 72 of the control component 7. The electrical connection wires and the control component 7 form a complete control module. The main board interface accessory 6 is used to cover these control modules and reserve interfaces for users, and cooperate with the ceiling mounting bracket 211 for ceiling mounting.

[0069] Other configurations and operations of the loudspeaker 100 according to the embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail here. In the description of the present invention, "the first feature" and "the second feature" may include one or more of such features. Among them, the up-down direction, left-right direction, and front-back direction are based on the up-down direction, left-right direction, and front-back direction shown in the figure.

[0070] In the description of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A loudspeaker, characterized in that, include: Box (1); A ceiling bracket (2) is provided on the top of the box (1); A plurality of sound-generating units (3) are mounted on the box (1) along the circumferential direction of the box (1), and the sound-generating units (3) are used to output audio to the outside of the box (1); The guide tube (4) is installed in the box (1) and includes an air inlet (41) and an air outlet (42), wherein the air inlet (41) is connected to the interior of the box (1), and the air outlet (42) is connected to a first avoidance hole (111) provided on the box (1).

2. The loudspeaker according to claim 1, characterized in that, A second avoidance hole (112) is provided on the side wall (11) of the box body (1) to avoid the audio output port (30) of the sound-generating unit (3).

3. The loudspeaker according to claim 2, characterized in that The sound-emitting unit (3) has a positioning flange (31) at the edge of the audio output port (30) extending in a direction away from the center of the audio output port (30); The positioning flange (31) is used to abut against the outer surface of the side peripheral wall (11).

4. The loudspeaker according to claim 2, characterized in that, It also includes a side net assembly (5) provided at the second avoidance hole (112).

5. The loudspeaker according to claim 4, characterized in that, The side net assembly (5) comprises a connected side net body (51) and a side net mounting member (52), wherein the side net mounting member (52) is used to be mounted at the second avoidance hole (112); a circumferential edge of the side net body (51) is provided with a raised edge (511) protruding from the surface of the side net body (51), and the raised edge (511) can be bent to be pressed against the side net mounting member (52).

6. The loudspeaker according to claim 1, characterized in that, The guide tube (4) is constructed as an arc-shaped tube extending in the circumferential direction.

7. The loudspeaker according to claim 6, wherein The guide tube (4) is provided with air inlets (41) at both ends in its extension direction, and the air outlet (42) is provided on the tube wall of the guide tube (4) and is located between the two air inlets (41).

8. The loudspeaker according to claim 1, characterized in that, The side peripheral wall (11) of the box body (1) is arranged to be inclined downward and inward.

9. The loudspeaker according to claim 1, characterized in that, A wire hole (121) is provided on the top wall (12) of the box body (1); The loudspeaker (100) further comprises a mainboard interface accessory (6) for electrically connecting to the sound-generating unit (3), and is arranged to cover the upper portion of the wire hole (121); The ceiling bracket (2) is arranged on a side of the mainboard interface accessory (6) facing away from the box (1).

10. The loudspeaker according to claim 1, wherein It also includes an infrared remote control device (71) electrically connected to the sound-generating unit (3), and is disposed on the outer surface of the side wall (11) or the outer surface of the bottom wall (13) of the box body (1).

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