CN219285573U

CN219285573U - Sound cavity damping and heat dissipation device and projection equipment

Info

Publication number: CN219285573U
Application number: CN202221683154.1U
Authority: CN
Inventors: 请求不公布姓名; 于光
Original assignee: Shenzhen Luoke Innovation Technology Co Ltd
Current assignee: Shenzhen Luoke Innovation Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-06-30
Anticipated expiration: 2032-06-30

Abstract

The present disclosure provides a sound cavity damping heat abstractor and projection equipment, include: a sound cavity (1) is provided with sound generating equipment inside; at least one sheet (2) is attached to the outer surface of the sound cavity (1); and a radiator (3) which is adjacent to the sound cavity (1) and does not interfere with the vibration of the sheet (2). Still further provide a projection equipment, including the casing, above sound chamber shock attenuation heat abstractor is arranged in the casing. When the sound generating device works, the outer wall of the sound cavity can vibrate, and the thin sheet (2) attached to the outer surface vibrates, so that the dissipation of vibration energy of the sound cavity (1) is facilitated, and on the other hand, the vibration of the thin sheet (2) generates airflow in the shell so as to facilitate the heat dissipation of the radiator (3).

Description

Sound cavity damping and heat dissipation device and projection equipment

Technical Field

The application relates to the technical field of shock absorption, in particular to a sound cavity shock absorption device and projection equipment.

Background

With the widespread use of projectors, the requirements of people on loudspeakers in a system are higher and higher, and the power of the loudspeakers of the projector is also higher and higher. Generally speaking, the larger the power of the loudspeaker is, the larger the vibration generated by the sound cavity is, and the vibration of the sound cavity can cause the vibration of a shell for fixing the sound cavity to generate abnormal sound; even drive the ray apparatus vibration and appear the picture shake, very big influence user use experience.

Meanwhile, the power consumption of the projector is higher and higher, the heat dissipation requirement in the system is higher and higher, and even if a fan is arranged in a small volume, the air flow is greatly limited.

Disclosure of Invention

Purpose of (one) application

The purpose of this application is on the basis of current sound chamber shock attenuation technique, proposes a sound chamber shock attenuation and heat abstractor to and projection equipment, can effectively realize sound chamber vibration energy dissipation and auxiliary projection equipment dispel the heat.

(II) technical scheme

According to an embodiment, a first aspect of the present application provides a sound cavity vibration damping and heat dissipating device, including: a sound cavity in which sound producing equipment is arranged; at least one sheet attached to an outer surface of the acoustic cavity; and the radiator is close to the sound cavity and does not interfere with the vibration of the thin sheet.

Further, the sound cavity is hexahedral; the sheet has at least three sheets, and has at least two sheets attached to adjacent two of six faces of the sound cavity, respectively.

Further, the attaching mode of the thin sheet is parallel or intersected with the adjacent surface of the attaching surface of the thin sheet.

Further, the sound cavity is a columnar body; the sheet has at least two sheets, and at least one sheet is attached to one end face and the columnar peripheral face of the columnar body.

Further, the sheet has at least six sheets, and at least one sheet is attached to each face of the sound cavity.

Further, at least one of the sheets attached to the surface of the acoustic cavity spatially abuts the heat sink.

Further, a heat source is directly or indirectly mounted on the heat sink, and the heat sink fins of the heat sink are closer to the sound cavity than the heat source.

Further, the shape of the sheets is the same or different, and the air flow generated by the vibration action thereof can act on the heat sink.

According to another embodiment of the present disclosure, there is further provided a projection apparatus including a light engine and a housing, and further including a sound cavity vibration damping and heat dissipating device as described above.

Further, a cooling device is also included in the housing for cooling the heat sink.

(III) beneficial effects

The technical scheme of the application has the following beneficial technical effects: the thin metal sheet is fixed on the sound cavity, the sound cavity vibrates to drive the metal sheet to vibrate, and vibration energy is dissipated through friction between the metal sheet and air; the metal sheet can be arranged in different directions of the sound cavity, so that vibration in three directions of X/Y/Z is reduced in a targeted manner; the metal sheet vibrates to drive the peripheral air to flow, so that air flow is generated, and the heat dissipation of the peripheral heat source is facilitated.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the drawings needed in the embodiments or the prior art description, and it is obvious that the drawings in the following description are one embodiment of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a damping and heat dissipating device for a sound cavity according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an acoustic cavity according to an embodiment of the present application;

fig. 3 is a schematic view of another acoustic cavity according to an embodiment of the present application.

Reference numerals illustrate: 1, a sound cavity; 2, a sheet; 3, a radiator; and 4, heating the heat source.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings. It should be understood that the description is only exemplary and is not intended to limit the scope of the present application. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present application.

In the description of the present application, it should be noted that the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the prior art, a silica gel vibration isolation technology is generally adopted for the vibration component, and the vibration component is partially or wholly coated with silica gel, so that vibration transmission is isolated, the vibration isolation effect of the silica gel pad in the form is limited, the vibration can be transmitted when the vibration becomes large, the good vibration isolation effect is not achieved, and in addition, the silica gel pad is only effective in one vertical direction in general, and the effect in the horizontal direction is very limited. It is also common to fix the vibrating member to a large mass of the object so that the vibration is reduced, however, the large mass affects the weight of the whole machine and causes an increase in cost.

In this disclosure, referring to fig. 1, a device capable of assisting in dissipating heat while absorbing shock is provided, in a projection device having a vibration member, a sound box system is required to be provided, when the sound box system works, a housing/sound cavity can perform irregular vibration due to the existence of a sound field, if the vibration of the sound cavity is not limited or eliminated, the vibration transmission or even resonance phenomenon of the whole machine can be caused, the vibration of the projection device as a whole or an optical machine therein can be further driven, the vibration of the optical machine can cause shaking of a projection picture, and the experience of a user is obviously reduced when the user views the projection device. The metal sheet 2 is arranged on the outer wall of the sound cavity 1, the vibration of the sound cavity 1 drives the metal sheet 2 to vibrate together, the vibration of the metal sheet 2 drives air to flow to form air flow, and meanwhile vibration energy of the sound cavity is consumed. The metal sheet 2 drives air flow formed by air flow, so that the heat exchange coefficient of the radiator 3 can be improved, and the heat dissipation efficiency of the heat source 4 is further improved.

According to actual needs, due to uneven sound field distribution, the amplitudes and frequencies of the outer surfaces of the sound cavity 1 will be different, and the metal sheet 2 can be arranged on the expected maximum vibration surface or the maximum amplitude of the vibration surface, and the metal sheet 2 and the sound cavity 1 vibrate together to disperse the vibration energy of the sound cavity, so that the vibration energy of the metal sheet 2 is consumed by applying work to the air, and the effect of rapid shock absorption is achieved.

Of course, due to the difference in the external configuration of the acoustic cavity 1, for example, as for the hexahedral acoustic cavity 1, referring to fig. 2, at least one metal sheet 2 may be disposed on the largest vibration plane thereof, and the at least one metal sheet 2 may be optionally disposed correspondingly to the position where the vibration amplitude is largest; multiple metal sheets 2 may be optionally provided on multiple surfaces; for the silica gel vibration isolator can only be in a certain direction effective shock attenuation difference, to hexahedral sound chamber 1, if all be provided with foil in corresponding to X, Y, Z three direction, just formed the effect that can both carry out the shock attenuation to the vibration of sound chamber outer wall of three direction, moreover the structure is simpler, and assembly process is convenient.

While referring to fig. 3 for a sound cavity 1 having a cylindrical shape, for example, a cylindrical sound cavity 1 including a cylindrical outer peripheral surface and upper and lower end surfaces, at least one metal sheet 2 may be provided on the cylindrical peripheral surface, for example, two or three or more may be provided at fixed intervals; optionally, a foil 2 can also be provided on at least one end face.

In the case of providing a plurality of metal sheets 2, the shape (including length, width, and thickness) of each metal sheet 2 may be the same or different, and may be set accordingly according to the size of the internal space of the projection apparatus and the vibration condition.

The setting of the metal sheet 2 can absorb shock for the sound cavity 1 on one hand, and on the other hand, the heat dissipation is also facilitated, and the air flow can increase the heat exchange coefficient of the surface of the radiator, so that the heat dissipation efficiency of a heat source is improved.

One or more heat sinks 3 are arranged in the vicinity of the acoustic chamber 1, which heat sinks adjoin the heat source 4, mainly for dissipating the heat generated by the heat source 4. The metal sheet 2 extends from the surface of the sound cavity 1, and can drive air to flow during vibration, so that an air cooling effect can be achieved in a certain sense.

The metal foils 2 do not contact the heat sink 3 during vibration, i.e. do not interfere with each other in any way; of course, in some cases, the foil 2 is allowed to contact the heat sink 3 when the vibration is capable of contacting the heat sink 3, provided that the vibration of the foil 2 does not affect the heat sink 3, or the heat sink 3 does not affect the foil 2, particularly when the vibration of the foil 2 strikes the heat sink 3, and the reaction of the heat sink 3 to the foil 2 may cause the foil 2 to fall off the surface of the acoustic cavity, thereby adversely affecting the whole system.

In order to enhance the auxiliary heat radiation effect of the foil 2 on the heat sink 3, the heat sink 3 may be arranged closer to the foil 2 than the heat source 4, so that the air flow generated by the vibration of the foil 2 can act relatively effectively on the heat sink 3. Of course, the above limitation is not necessary, and in practice, the fanning effect of the metal sheet 2 effectively acts on the heat source 4, and also provides a better effect of cooling the heat source 4, and in this case, the heat source 4 may be disposed closer to the metal sheet 2 than the heat sink 3.

According to another embodiment of the present disclosure, there is also provided a projection apparatus including a light engine, a heat sink, a cooling device, a sound cavity, a housing, and the like. The radiator can be arranged as a light source of the optical machine and/or the optical modulator for radiating and can be in the forms of radiating fins or aluminum extrusion and the like; the cooling device is designed to take away the heat of the radiator to efficiently cool, and can be a fan or a liquid cooling device; a loudspeaker system is arranged in the sound cavity; the components are uniformly distributed in the projection equipment shell.

The inner space formed by the projection equipment shell can be divided into a plurality of small spaces, one or more components are arranged in each small space, the cooling device can effectively dissipate heat of the radiator through the channel, the sound cavity 1 and the metal sheet 2 attached to the sound cavity 1 can be arranged in the same small space, and the metal sheet 2 can also extend into the space where the radiator 3 is located, so that a better auxiliary heat dissipation effect is achieved.

Of course, the projection device may include only an outer housing, and all of the components within the outer housing are disposed in the same space formed by the outer housing, such that the cooling device provides an effective heat dissipation path for all of the components.

It is to be understood that the above-described embodiments of the present application are merely illustrative of or explanation of the principles of the present application and are in no way limiting of the present application. Accordingly, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present application are intended to be included within the scope of the present application. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary. The modules in the system device of the embodiment of the application can be combined, divided and deleted according to actual needs.

Claims

1. The utility model provides a sound chamber shock attenuation heat abstractor which characterized in that includes:

a sound cavity (1) is provided with sound generating equipment inside;

at least one sheet (2) attached to the outer surface of the acoustic cavity (1);

and a radiator (3) which is adjacent to the sound cavity (1) and does not interfere with the vibration of the sheet (2).

2. The acoustic cavity shock absorbing and dissipating device of claim 1, wherein:

the sound cavity (1) is hexahedral;

the sheet (2) has at least three sheets, and at least two sheets are respectively attached to two adjacent surfaces of six surfaces of the sound cavity (1).

3. The acoustic cavity shock absorbing and dissipating device of claim 2, wherein:

the attaching mode of the sheet (2) is parallel or intersected with the adjacent surface of the attaching surface of the sheet (2).

4. The acoustic cavity shock absorbing and dissipating device of claim 1, wherein:

the sound cavity (1) is a columnar body;

the sheet (2) has at least two sheets, and at least one sheet (2) is attached to one end surface and the columnar peripheral surface of the columnar body.

5. The acoustic cavity shock absorbing and dissipating device of claim 2, wherein:

the sheet (2) has at least six sheets, and at least one sheet (2) is attached to each face of the sound cavity (1).

6. The acoustic cavity shock absorbing and dissipating device of claim 1, wherein:

at least one of the sheets attached to the surface of the acoustic cavity (1) spatially abuts the heat sink (3).

7. The acoustic cavity shock absorbing and dissipating device of claim 1, wherein:

a heat source (4) is directly or indirectly mounted on the radiator (3), and the radiating fins of the radiator (3) are closer to the sound cavity (1) than the heat source (4).

8. The acoustic cavity shock absorbing and dissipating device of claim 2, 4 or 5, wherein:

the lamellae (2) are identical or different in shape and the air flow generated by their vibrating action can act on the heat sink (3).

9. A projection device comprising a light engine and a housing, characterized in that: further comprising a sound cavity vibration damping and heat dissipating device according to any of claims 1-8.

10. The projection device of claim 9, wherein: the housing also comprises cooling means for cooling the radiator (3).