CN220173373U - Ceiling loudspeaker box - Google Patents

Abstract

The utility model provides a ceiling sound box, which comprises a loudspeaker assembly, a base and a sound guide plate, wherein the base is provided with a containing cavity, a first through hole is formed in the bottom surface of the containing cavity, the loudspeaker assembly partially penetrates through the first through hole and is connected with the base, the loudspeaker assembly comprises a basin frame, the basin frame is positioned in the containing cavity, a second through hole is formed in the sound guide plate, the shape of the second through hole is matched with that of the basin frame, the sound guide plate is arranged in the containing cavity, the basin frame enters the second through hole, and the sound guide plate fills a part of space in the containing cavity. According to the ceiling sound box, the sound guide plate is arranged in the accommodating cavity of the base, so that the height difference between the basin frame and the bottom surface of the accommodating cavity can be made up, diffraction generated by collision of sound entering the accommodating cavity is effectively restrained, sound quality is improved, sound amplifying effect is optimized, and a user can obtain better hearing experience.

Description

Ceiling loudspeaker box

Technical Field

The utility model relates to the technical field of sound boxes, in particular to a ceiling sound box.

Background

A loudspeaker is a terminal of the overall sound system, which functions to convert audio electrical energy into corresponding acoustic energy and radiate it into space, which is an extremely important component of the sound system. The sound box is of various types, and generally comprises a floor sound box, a wall-mounted sound box, a ceiling sound box and the like. Taking a ceiling loudspeaker box as an example, the ceiling loudspeaker box in the prior art is generally installed on a ceiling, is widely applied to meeting rooms, academic report halls, studios, network living broadcast rooms, restaurants, station waiting halls and other places, and is also gradually used in a home background music system.

The structure of the ceiling loudspeaker box in the prior art comprises a shell embedded in a ceiling, a loudspeaker assembly is connected in the shell, and a net cover is connected on the shell outside the loudspeaker assembly. One end of the shell of the ceiling sound box in the prior art is concavely provided with a mounting surface, the center of the mounting surface is provided with a mounting hole communicated with the inside of the shell, the end face of the framework of the loudspeaker assembly is provided with a basin stand extending outwards in radial direction, when the loudspeaker assembly is inserted into the mounting hole from outside to inside, the basin stand of the loudspeaker assembly is propped against the mounting surface and is connected with the mounting surface through the fastener, so that the loudspeaker assembly is assembled on the shell.

The ceiling loudspeaker box in the prior art has the following defects in the actual use process: the basin frame of the loudspeaker assembly is propped against or pressed on the mounting surface, so that a certain height difference is formed between the outer surface of the basin frame and the mounting surface, and a concave cavity surrounding the loudspeaker assembly is formed on the mounting surface at the outer edge of the basin frame; when the sound emitted by the loudspeaker assembly is outwards diffused through the sound emitting surface of the loudspeaker assembly, a part of sound can enter the concave cavity and collide with the inner wall of the concave cavity to cause sound diffraction; even, the sound that gets into in the cavity causes the second sound source because of the diffraction in the sharp corner in the cavity, and the second sound source forms the interference with the sound that speaker subassembly sent to lead to ceiling sound box tone quality relatively poor, the public address effect can not satisfy the user demand, and user experience feels relatively poor.

Disclosure of Invention

The utility model aims to solve the problem of optimizing the loudspeaker effect of the ceiling loudspeaker box and improve the use experience of a user.

In order to solve the problems, the utility model provides a ceiling sound box, which comprises a loudspeaker assembly, a base and a sound guide plate, wherein the base is provided with a containing cavity, a first through hole is formed in the bottom surface of the containing cavity, the loudspeaker assembly partially penetrates through the first through hole and is connected with the base, the loudspeaker assembly comprises a basin frame, the basin frame is positioned in the containing cavity, a second through hole is formed in the sound guide plate, the shape of the second through hole is matched with that of the basin frame, the sound guide plate is arranged in the containing cavity, the basin frame enters the second through hole, and the sound guide plate fills a part of space in the containing cavity.

Compared with the prior art, the sound guide plate is arranged in the accommodating cavity of the base, the height difference between the basin frame and the bottom surface of the accommodating cavity can be made up by the sound guide plate, diffraction generated by collision of sound entering the accommodating cavity is effectively restrained, sound quality is improved, sound amplifying effect is optimized, and a user can obtain better hearing experience.

Further, the edge of the sound guide plate is a round square, the diameter of the round angle is larger than the side length of the square, and the degree of the round angle is 10-60 degrees. The common base accommodating cavity comprises a round shape and a square shape, and the shape of the outer edge of the sound guide plate is a round square shape, so that the sound guide plate can be simultaneously applicable to bases with two different shapes, additional die sinking is not needed, and the cost is saved.

Further, the distance between the edge of the sound guide plate and the minimum part of the inner wall gap of the accommodating cavity is 0.1-2cm. The edge of the sound guide plate is close to the inner wall of the accommodating cavity, the effect of improving sound quality is guaranteed, and meanwhile, a gap is reserved, so that the sound guide plate is convenient to install.

Further, the minimum part of the gap between the edge of the sound guide plate and the inner wall of the accommodating cavity is at least 10% of the whole edge of the sound guide plate. The part of the sound guide plate, which is close to the inner wall of the accommodating cavity, is larger, so that the sound guide plate is ensured to have enough coverage area, and the sound guide effect is improved as much as possible.

Further, the thickness of the sound guide plate gradually increases from the second through hole to the edge part. The increased thickness serves to fill the space within the receiving cavity.

Further, the front surface of the sound guide plate far away from the first through hole is an arc surface or an inclined surface. Creating a smooth continuous acoustic surface that reduces diffraction phenomena that occur when touching sharp objects when sound is transmitted.

Further, the thickness of the sound guide plate at the second through hole part is the same as the thickness of the edge part of the basin frame. And the height difference between the sound guide plate and the basin frame is eliminated, so that the diffraction of transmitted sound is avoided.

Further, the back of the sound guide plate, which is close to the first through hole, is provided with a groove, and a plurality of reinforcing ribs are arranged in the groove. The reinforcing ribs are used for enhancing the strength and rigidity of the sound guide plate so as to save the material consumption, reduce the weight and the cost, and overcome the deformation of products caused by uneven stress due to the difference of the wall thickness of the sound guide plate.

Further, the sound guide plate is provided with a yielding hole, the base is provided with an inverter channel, and the yielding hole corresponds to the position of the inverter channel. The electric wire is convenient to set.

Further, the sound guide plate is provided with a plurality of connecting holes, and the screw penetrates through the connecting holes to enable the sound guide plate to be connected with the base. The accurate installation position of the sound guide plate is ensured, and the connection is reliable.

Drawings

FIG. 1 is an exploded view of a ceiling mounted loudspeaker in an embodiment of the utility model;

fig. 2 is a schematic structural diagram of a sound guide plate according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a ceiling speaker according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a ceiling speaker according to another embodiment of the present utility model;

FIG. 5 is a frequency response curve of a ceiling speaker according to an embodiment of the present utility model;

fig. 6 is a plot of the frequency response of a ceiling speaker without a sound guide plate according to the comparative example of the present utility model.

Reference numerals illustrate:

1-speaker assembly, 11-basin frame, 2-base, 21-first through-hole, 22-phase inversion passageway, 23-holding chamber, 24-fixed knot, 3-sound guide plate, 31-second through-hole, 32-recess, 321-strengthening rib, 33-hole of stepping down, 34-connecting hole, 4-casing, 5-backing plate, 51-third through-hole, 6-screen panel.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

It should be noted that: like numerals and letters indicate like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," and the like are to be construed broadly and include, for example, "connected," either permanently connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.

Referring to fig. 1 to 3, the present embodiment provides a ceiling speaker, which includes a housing 4, a base 2, a speaker assembly 1, and a sound guide plate 3. The housing 4 and the base 2 form an installation space for each component, wherein the base 2 is provided with a containing cavity 23, a first through hole 21 is arranged on the bottom surface of the containing cavity 23, and the loudspeaker assembly 1 passes through the first through hole 21 from outside to inside and partially enters the housing 4. The loudspeaker assembly 1 comprises a frame 11, the frame 11 being located in the receiving cavity 23, the frame 11 being connected to the base 2 by screws and/or snap-fit, so that the loudspeaker assembly 1 is mounted in place. The sound guide plate 3 is provided with a second through hole 31, the shape of the second through hole 31 is matched with that of the basin frame 11, the sound guide plate 3 is arranged in the accommodating cavity 23, the basin frame 11 enters the second through hole 31, and the sound guide plate 3 fills a space in the accommodating cavity 23.

The ceiling loudspeaker box of the embodiment is provided with the sound guide plate 3, can partially compensate for the height difference between the basin frame 11 and the bottom surface of the accommodating cavity 23, effectively inhibits diffraction generated by collision of sound entering the accommodating cavity 23, improves sound quality, optimizes sound amplifying effect, and enables a user to obtain better hearing experience.

The sound guide plate 3 is also provided with a plurality of connecting holes 34, and screws pass through the connecting holes 34 to enable the sound guide plate 3 to be in positioning connection with the base 2.

The ceiling loudspeaker box further comprises a base plate 5 and a net cover 6, a third through hole 51 is formed in the base plate 5, and the base plate 5 is arranged between the basin frame 11 and the bottom surface of the accommodating cavity 23, so that the effects of structural protection and vibration reduction are achieved. A plurality of fixing buckles 24 are arranged in the accommodating cavity 23, corresponding buckling structures are arranged on the net cover 6, and the net cover 6 is covered at the opening part of the accommodating cavity 23 to play roles in protection and dust prevention.

As shown in fig. 1 and 2, in this embodiment, the housing 4 has a rectangular parallelepiped shape, the outer edge of the base 2 has a circular shape, and the edge of the accommodating chamber 23 has a circular shape. The edge of the sound guide plate 3 is a round square, the diameter of the round angle is larger than the side length of the square, and the degree of the round angle is 45 degrees. After the assembly of the sound guide plate 3, the clearance between the round corner part and the inner wall of the accommodating cavity 23 is 0.5cm. Wherein the rounded corner part accounts for 40% of the edge of the sound guide plate 3, and the minimum clearance between the edge of the sound guide plate 3 and the inner wall of the accommodating cavity 23 accounts for 40% of the whole edge of the sound guide plate 3. The edge of the sound guide plate 3 is close to the inner wall of the accommodating cavity 23, the effect of improving sound quality is guaranteed, and meanwhile, a gap is reserved, so that the sound guide plate 3 is convenient to install.

In other embodiments, the distance between the edge of the sound guide plate 3 and the minimum part of the inner wall gap of the accommodating cavity 23 is 0.1-2cm, and the minimum part of the edge of the sound guide plate 3 and the inner wall gap of the accommodating cavity 23 is at least 10% of the whole edge of the sound guide plate 3, so as to ensure the tone quality of the sound.

The thickness of the sound guide plate 3 at the second through hole 31 is the same as the thickness of the edge part of the basin frame 11, the thickness of the sound guide plate 3 from the second through hole 31 to the edge part is gradually increased, the space between the basin frame 11 and the edge part of the accommodating cavity 23 can be connected, a smooth and fluent acoustic surface is manufactured, sound diffraction caused by collision with the inner wall of the accommodating cavity 23 when the sound emitted by the loudspeaker assembly 1 is outwards diffused is better inhibited, and the front surface of the sound guide plate 3 far away from the first through hole 21 is an arc surface with the thickness gradually increased from the second through hole 31 to the edge part. In other embodiments, the front surface of the sound guide plate 3 may be a continuous slope.

As shown in fig. 1 to 3, the sound guide plate 3 is provided with a relief hole 33, the base 2 is provided with a phase inversion channel 22 extending from the accommodation chamber 23 into the housing 4, and the relief hole 33 corresponds to the position of the phase inversion channel 22. The inverter channel 22 is used for inverting the low-frequency sound wave on the back of the cone and then returning the sound wave on the front of the cone to be overlapped, so that the output sound pressure of the low frequency is increased; the abdication holes 33 are arranged to prevent the sound guide plate 3 from blocking the air flow, so that the air flow and the sound wave can be smoothly transmitted.

Fig. 3 is a back surface of the sound guide plate 3, the back surface is provided with a groove 32, a plurality of reinforcing ribs 321 are arranged in the groove 32, and the reinforcing ribs 321 are transversely and longitudinally staggered, so that the strength and rigidity of the sound guide plate 3 can be enhanced, the material consumption can be saved, the weight can be reduced, the cost can be reduced, and the deformation of a product caused by uneven stress due to the difference of the wall thickness of the sound guide plate 3 can be overcome.

As shown in connection with fig. 4, this embodiment provides another form of ceiling speaker, which is different from the above-described embodiment in that the housing 4 has a cylindrical shape, and the outer edge of the base 2 and the edge of the accommodating chamber 23 have rounded square shapes. In this embodiment, the structure of the sound guide plate 3 is the same as that of the previous embodiment, and after the sound guide plate 3 is assembled, the clearance between the square four sides and the inner wall of the accommodating cavity 23 is 0.2cm, and the minimum clearance is 60% of the edge of the sound guide plate 3. The sound guide plate 3 with the structure is applicable to bases 2 with two different shapes, additional die sinking is not needed, and cost is saved.

The present utility model provides a comparative example which is different from the first embodiment in that the sound guide plate 3 is not installed in the accommodating chamber 23.

The frequency response curves of the examples and the comparative examples are shown in fig. 5 and 6, wherein fig. 5 is a frequency response curve of a ceiling speaker having a sound guide plate 3, and fig. 6 is a frequency response curve of a ceiling speaker without the sound guide plate 3 mounted. In the case where the sound guide plate 3 is not mounted, a distinct trough appears when the output frequency values are around 2.2kHz and 6.9kHz, and a peak appears when the output frequency values are around 3.5kHz, which is a comb-like filtering of the frequency response curve caused by the cavity effect generated by the sound wave during propagation, resulting in a plurality of peaks and valleys. In the case of the sound guide plate 3, peaks and valleys near the corresponding output frequency disappear, and the frequency response curve at this time becomes obviously smoother and more uniform, because the sound guide plate 3 fills the space in the partial accommodating cavity 23, the non-smoothness and the non-continuity existing in the acoustic environment are made up, and the sound diffraction caused by the collision between the sound and the inner wall in the accommodating cavity 23 and the collision between the sound and the sharp corners is reduced. Therefore, the technical scheme of the utility model can obviously improve the tone quality of the ceiling loudspeaker box, improve the sound amplifying effect and optimize the use experience of users.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solution of the present utility model, and not limiting thereof; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims (10)

1. The utility model provides a ceiling sound box, its characterized in that, includes speaker subassembly (1), base (2) and sound guide plate (3), base (2) have and hold chamber (23), hold chamber (23) bottom surface and be equipped with first through-hole (21), speaker subassembly (1) part pass first through-hole (21) and with base (2) are connected, speaker subassembly (1) include basin frame (11), basin frame (11) are located hold chamber (23), be equipped with second through-hole (31) on sound guide plate (3), second through-hole (31) shape with basin frame (11) match, sound guide plate (3) set up hold in chamber (23), basin frame (11) get into second through-hole (31), sound guide plate (3) fill some hold the space in chamber (23).

2. A ceiling sound box according to claim 1, characterized in that the edge of the sound guide plate (3) is rounded square, the diameter of the rounded corner is larger than the side length of the square, and the degree of the rounded corner is 10-60 °.

3. A ceiling sound box according to claim 2, characterized in that the distance between the edge of the sound guide plate (3) and the minimum part of the inner wall gap of the accommodating cavity (23) is 0.1-2cm.

4. A ceiling sound box according to claim 3, characterized in that the minimum part of the gap between the edge of the sound guide plate (3) and the inner wall of the accommodating cavity (23) is at least 10% of the whole edge of the sound guide plate (3).

5. A ceiling sound box according to any one of claims 1-4, characterized in that the thickness of the sound guide plate (3) increases gradually from the second through hole (31) to the edge portion.

6. The ceiling sound box according to claim 5, characterized in that the front surface of the sound guide plate (3) far away from the first through hole (21) is an arc surface or an inclined surface.

7. The ceiling loudspeaker according to claim 5, wherein the thickness of the sound guide plate (3) at the second through hole (31) is the same as the thickness of the edge of the basin frame (11).

8. The ceiling sound box according to claim 1, wherein the back surface of the sound guide plate (3) close to the first through hole (21) is provided with a groove (32), and a plurality of reinforcing ribs (321) are arranged in the groove (32).

9. The ceiling loudspeaker according to claim 1, wherein the sound guide plate (3) is provided with a relief hole (33), the base (2) is provided with a phase inversion channel (22), and the relief hole (33) corresponds to the phase inversion channel (22).

10. A ceiling sound box according to claim 1, characterized in that the sound guide plate (3) is provided with a plurality of connecting holes (34), and screws pass through the connecting holes (34) to connect the sound guide plate (3) with the base (2).