CN218995870U

CN218995870U - Radiating structure of projector

Info

Publication number: CN218995870U
Application number: CN202223319110.3U
Authority: CN
Inventors: 陈家豪; 汪小东
Original assignee: Daoxing Optics Xiamen Co ltd
Current assignee: Daoxing Optics Xiamen Co ltd
Priority date: 2022-12-10
Filing date: 2022-12-10
Publication date: 2023-05-09
Anticipated expiration: 2032-12-10

Abstract

The application relates to a heat radiation structure of a projector, which comprises a shell, a first heat radiation assembly, a second heat radiation assembly and a cold air assembly, wherein a prism component, a fluorescent wheel, a PCB (printed circuit board) and a projection objective lens are arranged inside the shell; the utility model discloses a solar energy collection device, including shell, first radiating component, prism subassembly, second radiating component, projection objective, first radiating component the PCB board with cold wind subassembly all set up in on the inside diapire of shell, cold wind subassembly is located on the PCB board, first radiating component has seted up and has held the chamber, prism subassembly set up in hold on the inner wall of chamber one end, the fluorescent wheel set up in hold on the inner wall of chamber other end, second radiating component set up in the fluorescent wheel corresponds on holding the outer wall of chamber, prism subassembly the fluorescent wheel with projection objective all electricity connect in the PCB board, cold wind subassembly orientation first radiating component. The projector heat dissipation device has the effect of improving the lower heat dissipation efficiency of the projector.

Description

Radiating structure of projector

Technical Field

The present disclosure relates to the field of laser projector technologies, and in particular, to a heat dissipation structure of a projector.

Background

The projector can generate more heat in the long-time operation, so that the projector is easy to cause overhigh internal heat, and the performance of the projector is reduced.

At present, a projector is commonly provided with a fan for heat dissipation, but because the temperature of important components with high working frequency in the interior of the projector is higher, and the temperature of other components is lower, the heating temperature of each component in the interior of the projector is uneven, the heat dissipation effect of an ordinary fan cannot enable the important components with higher heating in the interior of the projector to be subjected to targeted heat dissipation, and the heat dissipation efficiency in the interior of the projector is lower.

The related art described above has a disadvantage in that the heat dissipation efficiency of the projector is low.

Disclosure of Invention

In order to improve the problem that the heat dissipation efficiency of the projector is low, the application provides a heat dissipation structure of the projector.

The application provides a heat radiation structure of projecting apparatus adopts following technical scheme:

the heat dissipation structure of the projector comprises a shell, a first heat dissipation assembly, a second heat dissipation assembly and a cold air assembly, wherein a prism component, a fluorescent wheel, a PCB (printed circuit board) and a projection objective are arranged in the shell; the utility model discloses a solar energy collection device, including shell, first radiating component, prism subassembly, second radiating component, projection objective, first radiating component the PCB board with cold wind subassembly all set up in on the inside diapire of shell, cold wind subassembly is located on the PCB board, first radiating component has seted up and has held the chamber, prism subassembly set up in hold on the inner wall of chamber one end, the fluorescent wheel set up in hold on the inner wall of chamber other end, second radiating component set up in the fluorescent wheel corresponds on holding the outer wall of chamber, prism subassembly the fluorescent wheel with projection objective all electricity connect in the PCB board, cold wind subassembly orientation first radiating component.

Through adopting above-mentioned technical scheme, can dispel the heat to the inside prism part of projecting apparatus and the fluorescent wheel through first cooling module, thereby guarantee the operation work of the inside prism part of projecting apparatus and fluorescent wheel, second cooling module installs on first cooling module, make the inside heat dissipation work of projecting apparatus obtain further strengthening, the PCB board can produce the heat at the electrical connection prism part, fluorescent wheel and projection objective when working, can dispel the heat to the PCB board through cold wind subassembly, guarantee the normal operating of PCB board, cold wind subassembly is bloied the heat dissipation towards first cooling module simultaneously, can make the inside prism part of projecting apparatus and fluorescent wheel obtain the accurate heat dissipation of pertinence, further improve first cooling module's radiating effect, make the radiating effect of the heat radiation structure of this projecting apparatus can strengthen.

Optionally, the first heat dissipation subassembly includes heat dissipation post, first heating panel and heat dissipation storehouse, the heat dissipation storehouse set up in on the inside diapire of shell, first heating panel fixed connection in on the heat dissipation storehouse deviates from on one side of shell diapire, the heat dissipation post set up in first heating panel with on the outer wall of heat dissipation storehouse, the heat dissipation storehouse hold the chamber set up in the heat dissipation storehouse.

Through adopting above-mentioned technical scheme, prism part and fluorescent wheel are located the holding intracavity between first heating panel and the heat dissipation storehouse for the heat that prism part and fluorescent wheel during operation produced can be gone out through first heating panel and heat dissipation storehouse conduction, and the heat dissipation post of the outer wall in first heating panel and heat dissipation storehouse has increased heat radiating area simultaneously, makes the radiating effect obtain strengthening.

Optionally, the plurality of heat dissipation columns are arranged on the outer walls of the first heat dissipation plate and the heat dissipation bin at intervals.

Through adopting above-mentioned technical scheme, closely spaced between many heat dissipation posts on the outer wall of first heating panel and heat dissipation storehouse, many heat dissipation posts make the radiating area obtain further increasing, further strengthen the radiating effect.

Optionally, the outer wall of the heat dissipation bin corresponds the fluorescent wheel is provided with a avoiding hole for placing the fluorescent wheel, the first heat dissipation plate surrounds the avoiding hole and is provided with an annular bump, and the inner wall of the annular bump is provided with heat conduction lines.

Through adopting above-mentioned technical scheme, the fluorescent wheel is located the hole of dodging of heat dissipation storehouse to avoid the needs of heat dissipation storehouse to enlarge the volume and place the fluorescent wheel, make this inside limited space of projecting apparatus can save, the heat conduction line on the annular lug inner wall has increased heat conduction area simultaneously, has increased the radiating effect of first heating panel.

Optionally, the second cooling assembly includes second heating panel and copper pipe, the second heating panel set up in the fluorescent wheel corresponds on the first heating panel, the second heating panel lid closes on the outer wall of cyclic annular lug, the copper pipe set up in the second heating panel orientation dodge on the hole one side.

Through adopting above-mentioned technical scheme, the second heating panel is installed on the outer wall of annular lug, has guaranteed to dodge the inside seal in hole, ensures that the fluorescent wheel normally carries out the work of decomposing laser, and the second heating panel upper cover closes on the outer wall of annular lug simultaneously for the fluorescent wheel can dispel the heat through copper pipe conduction to the second heating panel under the high temperature of long-time operation easily producing.

Optionally, a plurality of heat dissipation fins are disposed on a side of the second heat dissipation plate facing away from the avoidance hole, and the plurality of heat dissipation fins are arranged at intervals.

By adopting the technical scheme, the radiating fins are arranged at intervals, so that the radiating fins can be densely distributed on the surface of the radiating fin, and the radiating area of the second radiating plate can be increased by the plurality of radiating fins, so that the radiating effect of the second radiating component is improved.

Optionally, the cold wind subassembly includes radiator fan and heat dissipation tuber pipe, radiator fan set up in on the lateral wall of shell, heat dissipation tuber pipe fixed connection in on radiator fan's the outer wall, be provided with the opening part on the heat dissipation tuber pipe, be formed with on the outer wall of opening part and dodge the groove, components and parts on the PCB board are located dodge in the groove.

Through adopting above-mentioned technical scheme, when radiator fan blows in the heat dissipation tuber pipe, the PCB board that is located the opening part of heat dissipation tuber pipe can increase the area that contacts the windy for the high temperature that PCB board during operation produced obtains the cooling.

Optionally, one end of the heat dissipation air pipe far away from the heat dissipation fan is connected to the outer side wall of the heat dissipation bin.

Through adopting above-mentioned technical scheme, radiator fan blows the wind to the heat dissipation storehouse through the mouth of blowing of heat dissipation tuber pipe on accurately for the inside prism part and the fluorescent wheel that easily produce the high temperature of heat dissipation storehouse can obtain the effective heat dissipation of pertinence, improves the radiating effect of this projecting apparatus's heat radiation structure.

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

1. the first radiating component can radiate heat of the prism component and the fluorescent wheel in the projector, so that the operation work of the prism component and the fluorescent wheel in the projector is guaranteed, the second radiating component is arranged on the first radiating component, the heat radiating work in the projector is further enhanced, the PCB board can generate heat when the prism component, the fluorescent wheel and the projection objective are electrically connected to work, the PCB board can be radiated through the cold air component, the normal operation of the PCB board is guaranteed, meanwhile, the cold air component blows and radiates heat towards the first radiating component, the prism component and the fluorescent wheel in the projector can be subjected to targeted accurate heat radiation, and the heat radiation effect of the first radiating component is further improved, so that the heat radiation effect of the heat radiation structure of the projector is enhanced;

2. the fluorescent wheel is positioned in the avoidance hole of the heat dissipation bin, so that the need of expanding the volume of the heat dissipation bin to place the fluorescent wheel is avoided, the limited space in the projector is saved, and meanwhile, the heat conduction area is increased by the heat conduction lines on the inner wall of the annular convex block, and the heat dissipation effect of the first heat dissipation plate is increased;

3. when the cooling fan blows air into the cooling air pipe, the area of the PCB located at the opening of the cooling air pipe can be increased to be contacted with the air, and therefore high temperature generated during the operation of the PCB is reduced.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic diagram of one side of a discrete hot air duct on the back of a PCB board according to an embodiment of the present application.

Fig. 3 is an exploded view of a first heat sink assembly and a second heat sink assembly according to one embodiment of the present application.

Reference numerals illustrate: 1. a first heat dissipation assembly; 11. a first heat dissipation plate; 111. a heat radiation column; 112. avoidance holes; 113. an annular bump; 1131. heat conduction lines; 12. a heat dissipation bin; 121. a receiving chamber; 2. a second heat dissipation assembly 21, a second heat dissipation plate; 211. a heat radiation fin; 22. copper pipe; 3. a cold air assembly; 31. a heat radiation fan; 32. a heat dissipation air pipe; 321. an opening; 322. an avoidance groove; 4. a prism member; 5. a fluorescent wheel; 6. a PCB board; 61. a component; 7. and a projection objective.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-3.

The embodiment of the application discloses a heat dissipation structure of a projector.

Referring to fig. 1 and 2, a heat dissipation structure of a projector includes a housing (not shown in the drawings), a first heat dissipation component 1 and a cold air component 3 mounted in the housing, the first heat dissipation component 1 and the cold air component 3 are mounted on a bottom wall inside the housing, the first heat dissipation component 1 and the cold air component 3 are both used for dissipating heat inside the projector, important devices inside the projector are mounted in the first heat dissipation component 1, a prism component 4 and a fluorescent wheel 5 are mounted in the housing, a projection objective 7 is mounted in the housing, the projector receives laser emitted by a laser through a prism of the prism component 4, then reflects the laser onto the fluorescent wheel 5, the laser is made to be incident on different positions of the fluorescent wheel 5 at different moments under high-speed rotation of the fluorescent wheel 5, thereby generating three-color light, and finally three-color light is reflected to the projection objective 7 through the prism, and finally a display picture required by a user is finally obtained through the convex lens of the projection objective 7, therefore, the prism component 4 and the fluorescent wheel 5 are easy to generate high temperature under long-time irradiation, because the prism component 4 and the fluorescent wheel 5 are mounted in the first heat dissipation component 1, the heat dissipation performance of the prism component 4 and the fluorescent wheel 5 can be guaranteed under the long-time heat dissipation condition, and the heat dissipation performance of the fluorescent wheel 5 can be guaranteed under the high-time operation conditions.

The heat radiation structure of the projector further comprises a second heat radiation component 2, the second heat radiation component 2 is arranged on the first heat radiation component 1, the outer wall of the second heat radiation component 2 is mutually abutted with the outer wall of the first heat radiation component 1, so that heat of the first heat radiation component 1 can be conducted to the second heat radiation component 2, the heat radiation area inside the projector is enlarged, and the heat radiation effect of the prism component 4 and the fluorescent wheel 5 is further enhanced.

Referring to fig. 2 and 3, still install the PCB board 6 that is connected with prism part 4, fluorescent wheel 5 and projection objective 7 electricity on the inside diapire of shell, because also very easily produce high heat under the circumstances of long-time circular telegram work of PCB board 6, cold wind subassembly 3 is located on PCB board 6, cold wind subassembly 3 is close to one side on the PCB board 6 and has seted up opening part 321 simultaneously, opening part 321 is on the surface towards the PCB for cold wind subassembly 3 can be direct obtains the targeted heat dissipation to the heat that PCB board 6 produced, makes the radiating effect of the heat radiation structure of this projecting apparatus more showing.

In this embodiment, the first heat dissipating component 1 and the second heat dissipating component 2 may be made of aluminum, which has advantages of easy thermal conductivity and low cost, and in other embodiments, the first heat dissipating component 1 and the second heat dissipating component 2 may be made of copper.

Referring to fig. 1, an avoidance groove 322 is formed on one side of the outer wall of the opening 321 of the heat dissipation air duct 32, which is close to the PCB board 6, and a component 61 on the PCB board 6 is located on the PCB board 6 corresponding to the avoidance groove 322, so that the problem that the PCB board 6 needs to enlarge the area to avoid the heat dissipation air duct 32 to install the component 61 is avoided, and the limited space in the projector is saved.

Specifically, the cold air assembly 3 includes a cooling fan 31 and a cooling air duct 32, the cooling air duct 32 is fixedly mounted on the cooling fan 31, and a blowing opening of the cooling air duct 32 faces the first cooling assembly 1, so that the cooling fan 31 can blow air accurately and in a large area onto the surface of the first cooling assembly 1, and heat dissipation of the first cooling assembly 1 is more remarkable.

Referring to fig. 1 and 2, the first heat dissipation assembly 1 includes a heat dissipation column 111, a first heat dissipation plate 11 and a heat dissipation bin 12, where the first heat dissipation plate 11 is fixedly connected to the heat dissipation bin 12 through screws, so that a sealed accommodating cavity 121 is formed between the first heat dissipation plate 11 and the inside of the heat dissipation bin 12, the prism component 4 and the fluorescent wheel 5 placed in the accommodating cavity are not easy to be impacted by external collision and the like, and meanwhile, the reflection work of the laser is not affected by an external light source, and the normal operation of the internal work of the projector is ensured. The plurality of heat dissipation columns 111 are installed on one side of the first heat dissipation plate 11, which is away from the heat dissipation bin 12, and the plurality of heat dissipation columns 111 are installed on one side of the heat dissipation bin 12, which is away from the first heat dissipation plate 11, and the heat dissipation columns 111 are uniformly distributed on the outer walls of the first heat dissipation plate 11 and the heat dissipation bin 12 at intervals, so that the heat dissipation columns 111 can be distributed and arranged more densely, the heat dissipation area of the first heat dissipation component 1 is increased, and the heat dissipation effect of the heat dissipation structure of the projector is improved.

Referring to fig. 2, because the area of the fluorescent wheel 5 is larger, the outer wall of the heat dissipation bin 12 is provided with the avoiding hole 112 for placing the fluorescent wheel 5, the first heat dissipation plate 11 is integrally formed with the annular protruding block 113 around the avoiding hole 112, so that the first heat dissipation plate 11 and the heat dissipation bin 12 need to be increased in volume to place the fluorescent wheel 5, the limited space inside the projector is saved, the inner side wall of the annular protruding block 113 is provided with the heat conduction lines 1131, the concave-convex surface of the heat conduction lines 1131 enables the heat conduction area inside the heat dissipation bin 12 to be enlarged, and the heat generated by the fluorescent wheel 5 can be diffused more effectively.

The rotating speed of the fluorescent wheel 5 in the working state can be 7000 times per minute, meanwhile, because the fluorescent wheel 5 needs to be in the airtight shell when working, the fluorescent wheel 5 is extremely easy to generate high heat, therefore, in order to achieve better heat dissipation effect on the fluorescent wheel 5, the second heat dissipation component 2 comprises a second heat dissipation plate 21 and a copper pipe 22 integrally formed with the second heat dissipation plate 21, the second heat dissipation plate 21 is fixedly arranged on the outer wall of the annular convex block 113 through screws, the copper pipe 22 is arranged on one side of the second heat dissipation plate 21 facing the avoidance hole 112, the copper pipe 22 can directly extend into the accommodating cavity to absorb heat in the accommodating cavity, and because the copper pipe 22 has the advantage of easy heat conduction, the heat can be dissipated to the outer wall of the second heat dissipation plate 21 through the copper pipe 22 more effectively, wherein the heat dissipation fins 211 are integrally formed on one side of the second heat dissipation plate 21 facing away from the hole 112, the heat dissipation fins 211 are uniformly distributed on the surface of the second heat dissipation plate 21 at intervals, the heat dissipation area of the second heat dissipation fin 2 is densely distributed, the heat dissipation area of the second heat dissipation component 2 is increased, the heat dissipation effect of the projector is improved, and the heat dissipation effect of the projector is improved.

The implementation principle of the heat dissipation structure of the projector in the embodiment of the application is as follows: because the frequency of the operation of the prism component 4 and the fluorescent wheel 5 inside the projector in the operation process of the projector is large, the prism component 4 and the fluorescent wheel 5 are extremely easy to generate high heat, the prism component 4 and the fluorescent wheel 5 are arranged in the accommodating cavity of the first heat dissipation component 1, the high heat generated by the prism component 4 and the fluorescent wheel 5 can be conducted to the outer wall of the first heat dissipation component 1 to realize heat dissipation, meanwhile, the PCB 6 is extremely easy to generate high heat in the operation process of the projector, the surface of the PCB 6 can be subjected to accurate heat dissipation through the heat dissipation air pipe 32 on the cold air component 3, the normal operation of the PCB 6 is ensured, meanwhile, the air blowing opening of the heat dissipation air pipe 32 is oriented to the air blowing of the heat dissipation bin 12, the prism component 4 and the fluorescent wheel 5 in the heat dissipation bin can be enabled to obtain targeted accurate heat dissipation, and the heat dissipation effect of the heat dissipation structure of the projector is further improved.

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 heat radiation structure of projector, its characterized in that: the LED projection lamp comprises a shell, a first heat dissipation assembly (1), a second heat dissipation assembly (2) and a cold air assembly (3), wherein a prism component (4), a fluorescent wheel (5), a PCB (printed circuit board) (6) and a projection objective lens (7) are arranged in the shell; the utility model discloses a fluorescent lamp, including shell, first radiating subassembly (1), PCB board (6) with cold wind subassembly (3) all set up in on the diapire of shell inside, cold wind subassembly (3) are located on PCB board (6), hold chamber (121) have been seted up to first radiating subassembly (1), prism part (4) set up in hold on the inner wall of chamber (121) one end, fluorescent wheel (5) set up in hold on the inner wall of chamber (121) other end, second radiating subassembly (2) set up in fluorescent wheel (5) correspond hold on the outer wall of chamber (121), prism part (4) fluorescent wheel (5) with projection objective (7) all electricity connect in PCB board (6), cold wind subassembly (3) orientation first radiating subassembly (1).

2. The heat dissipation structure of a projector according to claim 1, wherein: the first heat dissipation assembly (1) comprises a heat dissipation column (111), a first heat dissipation plate (11) and a heat dissipation bin (12), wherein the heat dissipation bin (12) is arranged on the bottom wall of the inside of the shell, the first heat dissipation plate (11) is fixedly connected to one side, deviating from the bottom wall of the shell, of the heat dissipation bin (12), the heat dissipation column (111) is arranged on the outer wall of the first heat dissipation plate (11) and the heat dissipation bin (12), and the heat dissipation bin (12) is provided with a containing cavity (121) arranged in the heat dissipation bin (12).

3. The heat dissipation structure of a projector according to claim 2, wherein: the plurality of heat dissipation columns (111) are arranged on the outer walls of the first heat dissipation plate (11) and the heat dissipation bin (12) at intervals.

4. The heat dissipation structure of a projector according to claim 2, wherein: avoidance holes (112) for placing the fluorescent wheels (5) are formed in the outer wall of the heat dissipation bin (12) corresponding to the fluorescent wheels (5), annular protruding blocks (113) are arranged around the avoidance holes (112) by the aid of the first heat dissipation plate (11), and heat conduction lines (1131) are formed in the inner wall of the annular protruding blocks (113).

5. The heat dissipation structure of a projector according to claim 4, wherein: the second heat dissipation assembly (2) comprises a second heat dissipation plate (21) and copper tubes (22), the second heat dissipation plate (21) is arranged on the first heat dissipation plate (11) corresponding to the fluorescent wheel (5), the second heat dissipation plate (21) is covered on the outer wall of the annular protruding block (113), and the copper tubes (22) are arranged on one side, facing the avoidance holes (112), of the second heat dissipation plate (21).

6. The heat dissipation structure of a projector according to claim 5, wherein: and a plurality of radiating fins (211) are arranged on one side, away from the avoidance holes (112), of the second radiating plate (21), and the radiating fins (211) are arranged at intervals.

7. The heat dissipation structure of a projector according to claim 2, wherein: the cold air assembly (3) comprises a cooling fan (31) and a cooling air pipe (32), wherein the cooling fan (31) is arranged on the side wall of the shell, the cooling air pipe (32) is fixedly connected to the outer wall of the cooling fan (31), an opening (321) is formed in the cooling air pipe (32), an avoidance groove (322) is formed in the outer wall of the opening (321), and a component (61) on the PCB (6) is located in the avoidance groove (322).

8. The heat dissipation structure of a projector according to claim 7, wherein: one end of the heat dissipation air pipe (32) far away from the heat dissipation fan (31) is connected to the outer side wall of the heat dissipation bin (12).