CN220730610U

CN220730610U - Projector with dustproof heat abstractor

Info

Publication number: CN220730610U
Application number: CN202322421881.1U
Authority: CN
Inventors: 倪忠良; 王磊; 马文俊
Original assignee: Qingdao Xiaoshuai Intelligent Technology Co ltd
Current assignee: Qingdao Xiaoshuai Intelligent Technology Co ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-04-05
Anticipated expiration: 2033-09-06

Abstract

The application relates to a projector with a dustproof heat abstractor, which belongs to the field of projectors and comprises a heat dissipation assembly, an optical assembly, an electric control assembly, a cooling assembly and a shell, wherein the heat dissipation assembly, the optical assembly, the electric control assembly and the cooling assembly are all arranged in the shell; the optical assembly comprises a light emitting source, a lens group, a refractive mirror and a lens, an inner shell is arranged outside the optical assembly, and the inner shell completely wraps the optical assembly; the heat radiation assembly consists of heat radiation fins and a heat conduction plate, wherein the heat radiation fins penetrate into the annular air duct, the heat conduction plate is arranged along the inner shell, and the heat radiation fins are arranged on the back surface of the light-emitting source; the cooling assembly comprises an annular air duct, the annular air duct is arranged around the light-emitting source, and an axial flow fan is arranged on one side, away from the lens, of the annular air duct; when the axial flow fan is started, the outside air is exchanged with the air in the annular air duct. This application has and avoids the dust to fall into the effect that influences the radiating effect when cooling down to the projecting apparatus.

Description

Projector with dustproof heat abstractor

Technical Field

The present disclosure relates to a projector, and more particularly to a projector with a dust-proof heat sink.

Background

Currently, a projector generally comprises an optical component, a heat dissipation component and a circuit board. The optical component comprises a luminous source, a lens group, a refractor and a lens. Light rays vertically enter the lens group from the light-emitting source, sequentially pass through the first Fresnel lens, the imaging screen and the second Fresnel lens, and are refracted by the refractor by 45 degrees to be emitted from the lens for imaging. The temperature of the light source and the circuit board can be obviously increased after the projector is started to operate in the using process.

With respect to the related art, if dust falls into the optical component during the use of the projector, the projection effect of the projector is greatly affected. The heat dissipation device generally uses a fan and a heat dissipation hole to dissipate heat, dust falls onto an optical circuit board and a circuit board along with the increase of service time, so that the heat dissipation effect is affected, the inside of the projector is easy to burn, and the projector is automatically protected by overheat starting.

Disclosure of Invention

In order to avoid dust to fall into when cooling down to the projector and influence the radiating effect, this application provides a projector with dust-type heat abstractor.

The application provides a projector with dustproof heat abstractor adopts following technical scheme:

the projector with the dustproof heat dissipation device comprises a heat dissipation assembly, an optical assembly, an electric control assembly, a cooling assembly and a shell, wherein the heat dissipation assembly, the optical assembly, the electric control assembly and the cooling assembly are all arranged in the shell; the optical assembly comprises a light emitting source, a lens group, a refractive mirror and a lens, an inner shell is arranged outside the optical assembly, and the inner shell completely wraps the optical assembly; the radiating component consists of radiating fins and a heat conducting plate, and the radiating fins are arranged on the back of the luminous source; the cooling assembly comprises an annular air channel, openings at two ends of the annular air channel are sealed all around, the annular air channel is arranged around the luminous source in a C-shaped mode, an axial flow fan is arranged on one side, away from the lens, of the annular air channel, through holes are formed in positions, corresponding to the openings at two ends of the annular air channel, of the outer shell, the through holes are communicated with the annular air channel and the outside, and when the axial flow fan is started, outside air and inside air of the annular air channel are exchanged.

By adopting the technical scheme, the optical assembly is sealed through the inner shell, and the heat conduction from the heat conducting plate attached to the inner shell to the radiating fins is avoided. One end of the radiating fin is clung to the light-emitting source, and the other end of the radiating fin is inserted into the air duct and is matched with the air duct to cool by using the axial flow fan. The optical components are in a closed state, so that the effect of projection is effectively prevented from being influenced when dust falls into the optical-grade components in the using process, and meanwhile, the heat generated in the optical components is effectively led out by using the heat conducting plate to be matched with the heat radiating fins, so that the heat radiating effect is improved under the condition that no dust falls into the optical components.

Preferably, the heat conducting plate is made of a heat conducting metal material, one end of the heat conducting plate is connected to the heat radiating fin, and the other end of the heat conducting plate extends between the electric control assembly and the refractor.

By adopting the technical scheme, the heat conducting plate transfers the heat generated by the electric control assembly and the lens group to the radiating fin to radiate, so that the temperature of main components is reduced, and the temperature inside the projector is reduced.

Preferably, the radiating fins of the radiating fins are arranged parallel to the direction of the bottom plate, the radiating fins extend to the side far away from the optical assembly, and the radiating fins are arranged in the annular air duct.

Through adopting above-mentioned technical scheme, the fin of fin has spaced parallel arrangement, and when axial fan started, the fin was parallel with the flow direction of annular wind in the wind channel, increased fin and the area of contact of wind, and the dust on the fin can be taken away to the wind simultaneously, improves the radiating effect of fin.

Preferably, the inner wall of the annular air duct is smooth.

Through adopting above-mentioned technical scheme, annular wind channel inner wall is smooth, and when the cooling assembly started, the dust was difficult for remaining in the wind channel, improves the cleanliness factor in the annular wind channel.

Preferably, a heat insulation plate is arranged between the heat dissipation fin and the air duct, and the partition plate is abutted against the outer walls of the heat dissipation fin and the annular air duct.

Through adopting above-mentioned technical scheme, the heat insulating board sets up between fin and wind channel, prevents that the high temperature of fin from passing through the wind channel inner wall conduction to other positions.

Preferably, two axial fans are arranged, the two axial fans are respectively arranged at the opening positions of two ends of the annular air duct, one end, far away from the lens, of the annular air duct is an air inlet fan, and the other end, close to the lens, is an air outlet fan.

Through adopting above-mentioned technical scheme, both ends are provided with air inlet fan and air-out fan respectively, have improved the velocity of flow of annular wind channel internal air current, have improved the radiating effect of cooling subassembly.

Preferably, a blocking cover is arranged on the housing corresponding to the position of the air inlet fan, the blocking cover is hinged to the housing, and the air inlet fan is arranged on the blocking cover.

Through adopting above-mentioned technical scheme, the air inlet fan can be opened from the shell outside to keeping away from the shell direction, and direct wind channel and radiator fin conveniently clean wind channel and radiator fin, ensures that no dust piles up on wind channel and the radiator fin, improves the radiating effect of projecting apparatus.

Preferably, a plurality of ventilation holes are formed in the shell.

Through adopting above-mentioned technical scheme, a plurality of ventilation holes have been seted up to the multiaspect on the shell, increase the radiating area of projecting apparatus, carry out natural cooling to annular wind channel.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the optical component is sealed through the inner shell, and the heat conduction of the heat conducting plate attached to the inner shell to the radiating fins is avoided. One end of the radiating fin is clung to the light-emitting source, and the other end of the radiating fin is inserted into the air duct and is matched with the annular air duct to cool by using the axial flow fan. The optical component is in a closed state, so that dust is effectively prevented from falling onto the optical component in the use process to influence the projection effect, and meanwhile, the heat generated in the optical component is effectively led out by using the heat conducting plate matched with the heat radiating fins, so that the heat radiating effect is improved under the condition that no dust falls into the optical component;

2. the inside of the annular air duct is smooth and matched with the axial flow fan to cool, so that dust accumulation is effectively prevented from blocking the annular air duct, the cooling effect is affected, and the cleaning frequency of the cooling assembly is reduced;

3. the air inlet fan can be opened from the outside of the shell to clean the annular air channel and the radiating fins, so that dust accumulation is avoided, and the radiating effect is influenced.

Drawings

Fig. 1 is a schematic structural diagram of a projector with a dust-proof heat dissipating device according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a protruding inner housing of a projector with a dust-proof heat sink according to an embodiment of the present application;

fig. 3 is a cross-sectional view of a protruding heat sink fin of a projector with a dust-proof heat sink according to an embodiment of the present application.

Fig. 4 is a cross-sectional view of a protruding shield of a projector with a dust-proof heat sink according to an embodiment of the present application.

Reference numerals illustrate: 1. a housing; 11. a vent hole; 2. an optical component; 21. a light emitting source; 22. a lens group; 23. a lens; 24. a refractive mirror; 3. an inner case; 4. an electrical control assembly; 5. a heat dissipation assembly; 51. a heat dissipating fin; 511. a heat sink; 52. a heat conductive plate; 53. a heat insulating plate; 6. a cooling component; 61. an air duct; 62. an air intake fan; 63. an air outlet fan; 64. and a blocking cover.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiment of the application discloses a projector with a dustproof heat abstractor. Referring to fig. 1 to 3, a projector with a dust-proof heat sink includes an optical module 2, an electronic control module 4, a heat sink module 5, a cooling module 6, and a box-shaped housing 1. The heat dissipation assembly 5, the optical assembly 2, the electric control assembly 4 and the cooling assembly 6 are all installed in the shell 1, a plurality of ventilation holes 11 are formed in the vertical surface of the shell 1, the heat dissipation area of the projector is increased through the ventilation holes, natural cooling is performed, and the cooling effect is improved. The optical component 2 comprises a light-emitting source 21, a lens group 22, a refractive mirror 24 and a lens 23, and the optical component 2 is vertically and fixedly connected with the bottom plate of the shell 1. The light-emitting source 21 and the lens group 22 are arranged in parallel with the width direction of the housing 1 along the length direction of the housing 1, the refractive mirror 24 is arranged at 45 degrees with the lens group 22 on the side of the lens group 22 far away from the light-emitting source 21 along the length direction of the housing 1, and the refractive surface of the refractive mirror 24 is close to the lens direction. The lens 23 is connected to the housing 1 and penetrates through the housing, and the refractive surface of the lens 23 and the refractive mirror 24 forms an angle of 45 degrees. The optical component 2 is externally wrapped with an inner housing 3, the inner housing 3 completely enclosing the optical component 2 along the edges of the optical component 2. The non-refracting surface of the electric control component 4, which is back against the refracting mirror 24, is fixedly connected to the housing 1. The heat dissipation assembly 5 includes a heat dissipation fin 51, and the heat dissipation fin 51 is closely attached to an end of the light-emitting source 21 away from the lens group 22. The heat dissipation fins 51 extend along the inner housing 3 towards the refraction mirror 24, the heat conduction plates 52 extend between the electronic control assembly 4 and the refraction mirror 24, and the heat conduction plates 52 are overlapped with the non-refraction surface of the refraction mirror 24. The cooling assembly 6 comprises an annular air duct 61, openings at two ends of the annular air duct 61 are all closed, and the annular air duct 61 surrounds the light-emitting source 21 in a C shape and is vertically and fixedly connected to the bottom plate of the shell 1. An axial flow fan is arranged on one side of the annular air channel 61 far away from the lens 23, a through hole is formed in the position of the shell 1 corresponding to the position of the axial flow fan, the through hole is communicated with the annular air channel 61 and the outside, and when the axial flow fan is started, the outside air and the air in the annular air channel 61 are exchanged.

The implementation principle of the projector with the dustproof heat dissipation device in the embodiment of the application is as follows: the optical assembly 2 is sealed by the inner housing 3, and after the projector is started, the light emitting source 21 and the electronic control assembly 4 will heat up, the heat conducting plate 52 transfers the heat of the electronic control assembly 4 and the optical assembly 2 to the heat dissipating fins 51, and the heat dissipating fins 511 of the heat dissipating fins 51 are inserted into the air duct 61. When the axial flow fan is started, the air flow generated by the axial flow fan cools the heat radiating fins 51 along the annular air duct 61. The optical component 2 directly influences the projection effect of the projector, the heat generated in the optical component 2 is effectively led out by using the heat conducting plate 52 and the heat radiating fins 51 when the optical component 2 is closed, and the heat radiating effect is improved under the condition that no dust falls into the optical component.

Referring to fig. 3, as a further example under the present embodiment, the fins 511 of the fin 51 are disposed parallel to the bottom plate of the housing 1, the fins 511 of the fin 51 are disposed in the annular air duct 61, the fins 511 of the fin 51 are parallel to the airflow flowing direction in the annular air duct 61, the contact area between the fins 511 of the fin 51 and the airflow is increased, and dust on the fins 511 of the fin 51 is carried away during the airflow flowing process, so that the heat dissipation effect of the fin 51 is improved.

Referring to fig. 3, as a further example under the present embodiment, the inner wall of the annular air duct 61 is smooth, and dust is not easy to stay in the air duct 61 when air flows in the annular air duct 61, so that the frequency of cleaning the annular air duct 61 is reduced, and the effects of blocking dust and reducing temperature are effectively avoided.

Referring to fig. 3, as a further example under the present embodiment, the heat dissipating fin 51 is not in direct contact with the annular air duct 61, and the heat insulating plate 53 is fixedly connected to the junction of the heat dissipating fin 51 and the annular air duct 61. The heat dissipation fin 51 is higher in temperature, and the heat dissipation fin 51 is connected with the annular air duct 61 through the heat insulation plate 53, so that the heat dissipation fin is prevented from being conducted to other lower-temperature positions through the annular air duct 61, and influence on other parts is reduced.

Referring to fig. 3, as a further example under the present embodiment, two axial fans are provided, the axial fans are respectively installed at both ends of the annular air duct 61, the axial fans are parallel to the long side direction of the housing 1, the annular air duct 61 is an air inlet fan 62 away from the lens 23, and an air outlet fan 63 is close to the lens 23. Through the cooperation of air inlet fan 62 and air-out fan 63, effectively improve annular wind channel 61 internal air velocity, promote the cooling effect.

Referring to fig. 4, as a further example under the present embodiment, a through hole is formed in the casing 1 corresponding to the position of the air intake fan 62, a blocking cover 64 is hinged to the position of the through hole, and the blocking cover 64 coincides with the through hole. The air inlet fan 62 is installed in the shield cover 64, and the air inlet fan 62 can rotate along with the shield cover 64 in the direction away from the shell 1, and is communicated with the outside and the annular air channel 61, and the air channel 61 and the cooling fins 511 can be directly communicated by opening the shield cover 64 to clean the air channel 61, so that the cleaning process is facilitated, and the influence of dust accumulation on the cooling function is effectively avoided.

The embodiment of the application has the effect of avoiding dust to fall into and influence heat dissipation when cooling down the projector.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A projector with dust-proof heat sink, characterized in that: the cooling device comprises a heat dissipation assembly (5), an optical assembly (2), an electric control assembly (4), a cooling assembly (6) and a shell (1), wherein the heat dissipation assembly (5), the optical assembly (2), the electric control assembly (4) and the cooling assembly (6) are all arranged in the shell (1); the optical assembly (2) comprises a light-emitting source (21), a lens group (22), a refractive mirror (24) and a lens (23), wherein an inner shell (3) is arranged outside the optical assembly (2), and the inner shell (3) completely wraps the optical assembly (2); the heat dissipation assembly (5) consists of heat dissipation fins (51) and a heat conduction plate (52), and the heat dissipation fins (51) are arranged on the back of the light-emitting source (21); the cooling assembly (6) comprises an annular air channel (61), openings at two ends of the annular air channel (61) are sealed all around, the annular air channel (61) is arranged in a C-shaped mode to encircle the luminous source (21), an axial flow fan is arranged on one side, away from the lens (23), of the annular air channel (61), through holes are formed in positions, corresponding to the openings at two ends of the annular air channel (61), of the shell (1), the through holes are communicated with the annular air channel (61) and the outside, and when the axial flow fan is started, outside air and air inside the annular air channel (61) are exchanged.

2. A projector with a dust-proof heat sink as defined in claim 1, wherein: the heat conducting plate (52) is made of a heat conducting metal material, one end of the heat conducting plate (52) is connected to the heat radiating fin (51), and the other end of the heat conducting plate extends between the electric control component (4) and the refracting mirror (24).

3. A projector with a dust-proof heat sink as defined in claim 1, wherein: the radiating fins (511) of the radiating fins (51) are arranged parallel to the direction of the bottom plate, the radiating fins (511) extend to the side far away from the optical component (2), and the radiating fins (511) are arranged in the annular air duct (61).

4. A projector with a dust-proof heat sink as defined in claim 1, wherein: the inner wall of the annular air duct (61) is smooth.

5. A projector with a dust-proof heat sink as defined in claim 1, wherein: a heat insulation plate (53) is arranged between the heat radiation fin (51) and the annular air duct (61), and the heat insulation plate is abutted to the outer walls of the heat radiation fin (51) and the annular air duct (61).

6. A projector with a dust-proof heat sink as defined in claim 1, wherein: the two axial-flow fans are respectively arranged at the opening positions of the two ends of the annular air duct (61), one end, far away from the lens (23), of the annular air duct (61) is an air inlet fan (62), and the other end, close to the lens (23), is an air outlet fan (63).

7. A projector with a dust-proof heat sink as defined in claim 1, wherein: the position of the shell (1) corresponding to the air inlet fan (62) is provided with a blocking cover (64), the blocking cover (64) is hinged to the shell (1), and the air inlet fan (62) is arranged on the blocking cover (64).

8. A projector with a dust-proof heat sink as defined in claim 1, wherein: a plurality of ventilation holes (11) are formed in the shell (1).