CN219302859U

CN219302859U - LCD projector using sound box to assist heat dissipation

Info

Publication number: CN219302859U
Application number: CN202320194473.4U
Authority: CN
Inventors: 徐宝山
Original assignee: Guangzhou Rigal Electronics Co ltd
Current assignee: Guangzhou Rigal Electronics Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-07-04
Anticipated expiration: 2033-02-09

Abstract

The application provides an LCD projector utilizing a sound box to assist heat dissipation, comprising: the shell and the optical machine and the sound box are arranged in the shell; the shell is internally provided with a heat dissipation channel, the ray apparatus is provided with an external circulation radiator positioned in the heat dissipation channel, the sound box is arranged on one side of the external circulation radiator, the sound box comprises a sound box shell and a sound generating unit, the sound box shell is provided with a containing cavity, the sound generating unit is arranged in the containing cavity and divides the containing cavity into a front sound cavity and a rear sound cavity, when the sound generating unit generates sound, the volumes of the front sound cavity and the rear sound cavity can be changed, and the sound box shell faces to one side of the external circulation radiator and is provided with a first sound outlet communicated with the front sound cavity and a second sound outlet communicated with the rear sound cavity. Compared with the prior art, the LCD projector of the application is not only provided with the sound box to output sound, but also utilizes the sound box to assist in heat dissipation, and can effectively reduce the partial temperature of the external circulation radiator.

Description

LCD projector using sound box to assist heat dissipation

Technical Field

The application relates to the technical field of projector heat dissipation, in particular to an LCD projector using a sound box for assisting heat dissipation.

Background

The projector has the advantages of large display surface, convenient movement and the like, and is mainly used for occasions such as conferences, teaching, exhibition and the like. The general LCD projector comprises a shell and an optical machine arranged in the shell, wherein the optical machine is provided with an optical machine shell, optical elements such as an LCD screen, a lens and an LED are arranged in the optical machine shell, the LCD screen receives heat radiated by the LED during working, so that a radiator is required to be used for radiating the heat, the main current optical machine radiating mode is divided into inner circulation radiating and outer circulation radiating, the inner circulation radiating is performed in the optical machine shell in a closed manner, and the outer circulation radiating is connected with the inner circulation radiator by utilizing the outer circulation radiator in a butt joint manner, so that the heat of the inner circulation radiator is discharged in time.

At present, the requirements for the mute of the LCD projector in the market are higher and higher, and the noise source of the projector is mainly a fan for radiating the external circulation radiator, so some manufacturers choose to sacrifice part of the radiating effect, cancel the fan to reduce the noise, but the radiating effect is poor.

Disclosure of Invention

An objective of the present application is to provide an LCD projector using a speaker to assist heat dissipation, so as to solve the drawbacks and shortcomings in the prior art.

An LCD projector utilizing a sound box to assist heat dissipation of the application comprises: the shell and the optical machine and the sound box are arranged in the shell;

the shell is internally provided with a heat dissipation channel, the ray apparatus is provided with an external circulation radiator positioned in the heat dissipation channel, the sound box is arranged on one side of the external circulation radiator, the sound box comprises a sound box shell and a sound generating unit, the sound box shell is provided with a containing cavity, the sound generating unit is arranged in the containing cavity and divides the containing cavity into a front sound cavity and a rear sound cavity, when the sound generating unit generates sound, the volumes of the front sound cavity and the rear sound cavity can be changed, and the sound box shell faces to one side of the external circulation radiator and is provided with a first sound outlet communicated with the front sound cavity and a second sound outlet communicated with the rear sound cavity.

Compared with the prior art, the LCD projector of the embodiment of the application is not only provided with the sound box to output sound, but also utilizes the sound box to assist in heat dissipation, and can effectively reduce the partial temperature of the external circulation radiator.

In a preferred or alternative embodiment, the external circulation radiator includes a substrate, a plurality of first cooling fins and a plurality of second cooling fins, wherein the plurality of first cooling fins are sequentially arranged on the upper side of the substrate at intervals, and the plurality of second cooling fins are sequentially arranged on the lower side of the substrate at intervals.

In a preferred or alternative embodiment, the first sound outlet is located above the second sound outlet, the first sound outlet faces the gaps between the plurality of first heat sinks, and the second sound outlet faces the gaps between the plurality of second heat sinks.

In a preferred or alternative embodiment, the first sound outlet and the second sound outlet are both bar-shaped holes.

In a preferred or alternative embodiment, the length of the first sound outlet is at least greater than the distance between two first heat sinks located at the outermost sides, and the length of the second sound outlet is at least greater than the distance between two second heat sinks located at the outermost sides.

In a preferred or alternative embodiment, the external circulation radiator further includes a first heat conduction pipe and a second heat conduction pipe, one end of the first heat conduction pipe sequentially penetrates through a plurality of the first heat dissipation fins, the other end of the first heat conduction pipe is connected with the substrate, one end of the second heat conduction pipe sequentially penetrates through a plurality of the second heat dissipation fins, and the other end of the second heat conduction pipe is connected with the substrate.

In a preferred or alternative embodiment, the sound generating unit includes a paper drum, a voice coil, and a magnetic assembly, wherein the outer periphery of the paper drum is connected to the inner wall of the sound box housing to divide the accommodating cavity into a front sound cavity and a rear sound cavity, and the top of the voice coil is connected to the bottom of the paper drum and is matched with the magnetic assembly.

In a preferred or alternative embodiment, the magnetic assembly comprises a U-shaped iron, a magnet and a washer, the magnet and washer being mounted within the U-shaped iron, the voice coil being sleeved around the periphery of the magnet and washer.

In a preferred or alternative embodiment, the sound box shell includes a frame shell, an upper cover plate and a lower cover plate, wherein the upper end and the lower end of the frame shell are provided with openings, and the upper cover plate and the lower cover plate are respectively detachably connected to the upper end and the lower end of the frame shell so as to jointly enclose the accommodating cavity.

In a preferred or alternative embodiment, the upper cover plate and the lower cover plate are detachably connected with the frame shell through a buckle.

For a better understanding and implementation, the present application is described in detail below with reference to the drawings.

Drawings

FIG. 1 is a schematic diagram of a portion of an LCD projector according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of an external circulation radiator and a sound box in an embodiment of the present application;

fig. 3 is a schematic view of an internal structure of a sound box according to an embodiment of the present application;

reference numerals:

1. a housing; 10. a heat dissipation channel; 2. an external circulation radiator; 21. a substrate; 22. a first heat sink; 23. a second heat sink; 24. a first heat conduction pipe; 25. a second heat conduction pipe; 3. a sound box; 31. a sound box shell; 301. a front acoustic cavity; 302. a rear acoustic cavity; 303. a first sound outlet hole; 304. a second sound outlet hole; 311. a frame shell; 312. an upper cover plate; 313. a lower cover plate; 32. a sound generating unit; 321. paper is rolled; 322. a voice coil; 323. a magnetic assembly; 3231. u iron; 3232. a magnet; 3233. washer.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e., features defining "first," "second," may explicitly or implicitly include one or more such features. Furthermore, unless otherwise indicated, the meaning of "a plurality" is two or more.

It should be noted that, in the description of the present application, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "hollow" are to be construed broadly, and may be, for example, fixedly 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 terms in this application will be understood by those of ordinary skill in the art in a specific context.

In order to solve the technical problem of poor heat dissipation effect of an external circulation radiator of an LCD projector without an external circulation fan, an embodiment of the present application provides an LCD projector using a sound box to assist in heat dissipation, please refer to fig. 1 to 3, fig. 1 is a schematic diagram of a part of the structure of the LCD projector in the embodiment of the present application; fig. 2 is a schematic structural diagram of an external circulation radiator and a sound box in an embodiment of the present application; fig. 3 is a schematic diagram of an internal structure of a sound box according to an embodiment of the present application.

The LCD projector includes: the shell 1 and the optical machine and the loudspeaker box 3 which are arranged in the shell 1.

The inside heat dissipation channel 10 that is provided with of shell 1, the ray apparatus has and is located outer circulation radiator 2 in the heat dissipation channel 10, baffle box 3 set up in one side of outer circulation radiator 2, baffle box 3 includes baffle box casing 31 and sound production unit 32, baffle box casing 31 is formed with the holding chamber, sound production unit 32 set up in the holding intracavity and with the holding chamber is divided into preceding sound cavity 301 and back sound cavity 302, when sound production unit 32 sound production, can change the volume of preceding sound cavity 301 and back sound cavity 302, baffle box casing 31 orientation one side of outer circulation radiator 2 be provided with communicate in the first sound outlet 303 of preceding sound cavity 301 and communicate in the second sound outlet 304 of back sound cavity 302.

When the sound box 3 works, the sound generating unit 32 generates vibration to generate sound, the sound is respectively generated from the first sound outlet 303 and the second sound outlet 304, and the sound generating unit 32 can change the volumes of the front sound cavity 301 and the rear sound cavity 302 while vibrating, so that the air in the front sound cavity 301 and the rear sound cavity 302 is discharged to the first sound outlet 303 and the second sound outlet 304, or the air in the heat dissipation channel 10 is sucked into the front sound cavity 301 and the rear sound cavity 302 from the first sound outlet 303 and the second sound outlet 304, thereby forming air flow, and further assisting the heat dissipation of the external circulation radiator 2 and reducing the temperature.

The LCD projector of this application embodiment not only is provided with audio amplifier 3 and comes the output sound, but also utilizes audio amplifier 3 to assist the heat dissipation, can effectively reduce the partial temperature of outer circulation radiator 2.

Specifically, the sound generating unit 32 of the present embodiment includes a paper drum 321, a voice coil 322, and a magnetic component 323, wherein the outer peripheral edge of the paper drum 321 is connected to the inner wall of the sound box housing 31, so as to divide the accommodating cavity into a front sound cavity 301 and a rear sound cavity 302, and the top of the voice coil 322 is connected to the bottom of the paper drum 321 and is matched with the magnetic component 323. When the voice coil 322 is energized, under the magnetic force of the magnetic component 323, the voice coil can vibrate up and down to drive the drum paper 321 to vibrate, sound can be emitted when the drum paper 321 vibrates, and the volumes of the front sound cavity 301 and the rear sound cavity 302 are changed, so that the effects of sucking and blowing out air and emitting sound through the first sound outlet 303 and the second sound outlet 304 are achieved. Specifically, the magnetic component 323 in this embodiment includes a U-shaped iron 3231, a magnet 3232 and a washer 3233, the magnet 3232 and the washer 3233 are mounted in the U-shaped iron 3231, and the voice coil 322 is sleeved on the outer circumferences of the magnet 3232 and the washer 3233. Thus, the voice coil 322 may be positioned in the magnetic circuit, and vibration may be generated when the voice coil 322 is energized. When the voice coil 322 is energized, the voice coil 322 cuts the magnetic field lines, reciprocates (vibrates) up and down along the outer circumferences of the magnet 3232 and the washer 3233, thereby pushing the drum paper 321 to vibrate, and making a sound.

Preferably, in this embodiment, the external circulation radiator 2 includes a substrate 21, a plurality of first heat dissipation fins 22 and a plurality of second heat dissipation fins 23, the plurality of first heat dissipation fins 22 are sequentially arranged at intervals on the upper side of the substrate 21, and the plurality of second heat dissipation fins 23 are sequentially arranged at intervals on the lower side of the substrate 21, so as to enhance the heat dissipation effect.

Further, the first sound outlet 303 is located above the second sound outlet 304, the first sound outlet 303 faces the gaps between the plurality of first heat dissipation fins 22, and the second sound outlet 304 faces the gaps between the plurality of second heat dissipation fins 23. Through the reasonable position arrangement, the air sucked or blown by the sound outlet holes can flow through the gaps among the radiating fins, and the radiating effect is effectively improved.

In this embodiment, the first sound outlet 303 and the second sound outlet 304 are both bar-shaped holes. Therefore, the air blown out from the sound outlet holes has a certain speed, short discontinuous air flow can be formed, and the blowing distance is long.

Specifically, the length of the first sound outlet 303 is at least greater than the distance between two first heat dissipating fins 22 located at the outermost sides, and the length of the second sound outlet 304 is at least greater than the distance between two second heat dissipating fins 23 located at the outermost sides. To ensure that the air blown out of the sound outlet holes can pass through all the cooling fins.

In addition, in order to further enhance the heat dissipation effect, it is preferable that the external circulation radiator 2 further includes a first heat pipe 24 and a second heat pipe 25, one end of the first heat pipe 24 sequentially penetrates through the plurality of first heat dissipation fins 22, the other end is connected with the substrate 21, one end of the second heat pipe 25 sequentially penetrates through the plurality of second heat dissipation fins 23, and the other end is connected with the substrate 21.

In order to facilitate the maintenance of the sound box 3, preferably, the sound box housing 31 in this embodiment includes a frame shell 311, an upper cover plate 312 and a lower cover plate 313, where the upper end and the lower end of the frame shell 311 are disposed with openings, and the upper cover plate 312 and the lower cover plate 313 are detachably connected to the upper end and the lower end of the frame shell 311 respectively, so as to enclose the accommodating cavity together. Specifically, the upper cover plate 312 and the lower cover plate 313 are detachably connected to the frame housing 311 by a snap.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application.

Claims

1. An LCD projector using a speaker to assist in heat dissipation, comprising:

the shell and the optical machine and the sound box are arranged in the shell;

2. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 1, wherein:

the outer circulation radiator comprises a substrate, a plurality of first radiating fins and a plurality of second radiating fins, wherein the first radiating fins are sequentially arranged on the upper side of the substrate at intervals, and the second radiating fins are sequentially arranged on the lower side of the substrate at intervals.

3. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 2, wherein:

the first sound outlet is positioned above the second sound outlet, the first sound outlet faces the gaps among the plurality of first radiating fins, and the second sound outlet faces the gaps among the plurality of second radiating fins.

4. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 3, wherein:

the first sound outlet hole and the second sound outlet hole are bar-shaped holes.

5. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 4, wherein:

the length of the first sound outlet hole is at least greater than the distance between two first radiating fins which are respectively positioned at the outermost sides, and the length of the second sound outlet hole is at least greater than the distance between two second radiating fins which are respectively positioned at the outermost sides.

6. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 2, wherein:

the outer circulation radiator further comprises a first heat conduction pipe and a second heat conduction pipe, one end of the first heat conduction pipe sequentially penetrates through the plurality of first radiating fins, the other end of the first heat conduction pipe is connected with the substrate, one end of the second heat conduction pipe sequentially penetrates through the plurality of second radiating fins, and the other end of the second heat conduction pipe is connected with the substrate.

7. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 1, wherein:

the sound generating unit comprises a drum paper, a voice coil and a magnetic component, wherein the periphery edge of the drum paper is connected to the inner wall of the sound box shell, the accommodating cavity is divided into a front sound cavity and a rear sound cavity, and the top of the voice coil is connected to the bottom of the drum paper and matched with the magnetic component.

8. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 7, wherein:

the magnetic assembly comprises a U iron, a magnet and a washer, wherein the magnet and the washer are installed in the U iron, and the voice coil is sleeved on the periphery of the magnet and the washer.

9. The LCD projector using the speaker box for auxiliary heat dissipation according to any one of claims 1 to 8, wherein:

the sound box shell comprises a frame shell, an upper cover plate and a lower cover plate, wherein the upper end and the lower end of the frame shell are arranged in an opening mode, and the upper cover plate and the lower cover plate are respectively detachably connected to the upper end and the lower end of the frame shell so as to jointly enclose the accommodating cavity.

10. The LCD projector using the speaker box for auxiliary heat dissipation according to claim 9, wherein:

the upper cover plate and the lower cover plate are detachably connected with the frame shell through buckles.