CN218848557U

CN218848557U - Projection light source heat dissipation device and projection equipment

Info

Publication number: CN218848557U
Application number: CN202320063219.0U
Authority: CN
Inventors: 王燕斌
Original assignee: Shenzhen Yabo Innovation Co ltd
Current assignee: Shenzhen Yabo Innovation Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-04-11
Anticipated expiration: 2033-01-10

Abstract

The embodiment of the application discloses projection light source heat abstractor and projection equipment, projection light source heat abstractor includes the temperature-uniforming plate, the light source, two at least heat pipes and radiator, the light source is fixed in the surface of temperature-uniforming plate, two at least heat pipes are located the relative both sides of light source respectively, the first end of heat pipe is fixed in the surface that is equipped with the light source of temperature-uniforming plate, the second end of heat pipe is fixed in the radiator, can improve the heat pipe in the current projecting apparatus and concentrate lay on the light source and lead to the heat of heat pipe can not in time spread the technical problem on the radiator.

Description

Projection light source heat dissipation device and projection equipment

Technical Field

The application relates to the technical field of projection equipment heat dissipation, in particular to a projection light source heat dissipation device and projection equipment.

Background

A projector, also called a projector, is a device that can project images or videos onto a curtain, and can be connected with a computer, a VCD, a DVD, a BD, a game machine, a DV, etc. through different interfaces to play corresponding video signals. Projectors are widely applied to families, offices, schools and entertainment places, and different types such as CRT, LCD, DLP, 3LCD and the like exist according to different working modes.

The projector is used as a light source developing device, no matter what type of projector, the light source inevitably generates huge heat while the work is realized, especially along with the development of projection technology, the power consumption of the light source is larger and larger, the temperature of the light source is overhigh, and the main factor influencing the improvement of projection brightness and the service life is realized.

In the research and practice process of the prior art, the inventor of the application finds that the problem that the temperature of a light source is too high at present is solved, the purpose of reducing the temperature is mainly achieved through a heat pipe radiator, but the volume of the light source is too small, the power density is doubled compared with the prior art along with the increase of power, and the traditional heat pipe radiator is difficult to meet the heat dissipation requirement. As shown in fig. 1, the light source 1 is connected to the heat sink 3 through the heat pipes 2, and since the heat pipes 2 need to be in contact with the light source 1, the light source 1 has a small size, so that the distance between two adjacent heat pipes 2 is very small, and then all the heat pipes 2 are concentrated in a small area of the heat sink 3. The larger the temperature difference between the heat pipe 2 and the radiator 3 is, the better the heat exchange efficiency is. When all the heat pipes 2 are concentrated in a small area of the heat sink 3, the temperature of the small area of the heat sink 3 is higher, the temperature difference between the heat pipe 2 and the small area of the heat sink 3 is smaller, and the heat exchange efficiency is lower, so that the heat of the heat pipe 2 cannot be diffused to the heat sink 3 in time, which is not beneficial to the heat release of the heat pipe 2 on the heat sink 3.

SUMMERY OF THE UTILITY MODEL

The application provides a projection light source heat abstractor and projection equipment can improve the technical problem that the heat of heat pipe can not in time spread to the radiator because the heat pipe is intensively laid on the light source in the current projecting apparatus.

The application provides a projection light source heat abstractor, includes:

a temperature equalizing plate;

the light source is fixed on the surface of the temperature equalizing plate;

the heat pipes are respectively positioned at two opposite sides of the light source, and the first ends of the heat pipes are fixed on the surface, provided with the light source, of the temperature-uniforming plate; and

and the second end of the heat pipe is fixed on the radiator.

Optionally, in some embodiments of the present application, a sinking groove is formed in a surface of the temperature equalizing plate, and the first end of the heat pipe is embedded in the sinking groove.

Optionally, in some embodiments of the present application, the first end of the heat pipe is welded to the surface of the vapor chamber.

Optionally, in some embodiments of the present application, the heat sink is sleeved outside the second end of the heat pipe.

Optionally, in some embodiments of the present application, the heat sink includes a plurality of heat dissipation fins, the heat dissipation fins are provided with through holes, and the second end of the heat pipe penetrates through the through holes.

Optionally, in some embodiments of the present application, a plurality of the heat dissipation fins are sequentially stacked, and an inlet, a heat dissipation cavity, and an outlet, which are sequentially communicated, are enclosed between two adjacent heat dissipation fins;

the projection light source heat sink further comprises:

and the heat radiation fan is arranged on one side of the heat radiator corresponding to the inlet.

Optionally, in some embodiments of the present application, the heat sink includes a first fin group and a second fin group, and the first fin group is disposed on two opposite sides of the second fin group;

the first fin group and the second fin group both comprise a plurality of radiating fins, and the area of the radiating fins of the second fin group is larger than that of the radiating fins of the first fin group.

Optionally, in some embodiments of the present application, the length of the heat dissipation fins of the second fin group is greater than the length of the heat dissipation fins of the first fin group.

Optionally, in some embodiments of the present application, the projection light source heat sink further includes:

the flow guide piece is arranged on one side, corresponding to the outlet, of the radiator, and is provided with an air channel communicated with the outlet.

The application also provides a projection device which comprises the projection light source heat dissipation device.

The embodiment of the application adopts a projection light source heat dissipation device and projection equipment, the light source conducts heat to the heat pipe through the temperature equalizing plate, the temperature equalizing plate belongs to two-dimensional heat conduction, the temperature equalizing plate has the advantage of small thermal resistance, the heat conduction efficiency between the light source and the heat pipe can be ensured, through the arrangement, all the heat pipes do not need to be intensively paved on the light source, the heat pipe is prevented from being intensively arranged on the radiator, the heat exchange efficiency between the heat pipe and the radiator is effectively improved, the heat of the heat pipe can be timely diffused to the radiator, and the heat pipe is favorable for releasing heat on the radiator.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a heat dissipation manner of a light source of a conventional projector;

fig. 2 is a schematic perspective view of a projection light source heat sink according to an embodiment of the present disclosure;

fig. 3 is an exploded view of a heat sink of a projection light source according to an embodiment of the present disclosure;

fig. 4 is an exploded view of a heat sink according to an embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of a heat sink of a projection light source according to an embodiment of the present disclosure;

fig. 6 is a schematic perspective view of another heat dissipation fin according to an embodiment of the present disclosure.

Description of reference numerals:

1-light source, 2-heat pipe, 3-heat sink, 100-light source, 200-temperature equalizing plate, 210-sink, 300-heat pipe, 400-heat sink, 410A-first fin group, 410B-second fin group, 411-heat dissipation fin, 4111-through hole, 4112-flange, 420-inlet, 430-heat dissipation cavity, 440-outlet, 500-flow guide piece, 510-air duct and 600-heat dissipation fan.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. It is to be understood that the drawings are designed solely for the purposes of reference and illustration and not as a definition of the limits of the application. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be noted that unless expressly specified or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and include, for example, fixed and removable connections as well as integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It should be further noted that in the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 2 and 3, an embodiment of the present invention provides a projection light source heat dissipation apparatus, which includes a temperature equalizing plate 200, a light source 100, at least two heat pipes 300, and a heat sink 400.

The light source 100 is fixed on the surface of the vapor chamber 200, the first end of the heat pipe 300 is fixed on the surface of the vapor chamber 200 where the light source 100 is located, and the second end of the heat pipe 300 is fixed on the heat sink 400. In this structure, the light source 100 transmits heat to the heat pipe 300 through the temperature equalizing plate 200, and the heat pipe 300 transmits heat to the heat sink 400.

Compared with the heat pipe 300, the vapor chamber 200 (VC) of the embodiment of the present invention conducts heat on a two-dimensional surface, so that the heat conduction efficiency is higher. The inside of the temperature-equalizing plate 200 is provided with a cavity and a capillary structure, working fluid is arranged in the cavity, the light source 100 generates heat when working, the heat is conducted to the working fluid, the working fluid is heated and evaporated to form steam, the steam flows to the cold source in the cavity and then is cooled and condensed to form the working fluid, and the working fluid flows back to the light source 100 through the capillary structure to absorb heat and is circulated repeatedly, so that the heat-dissipating effect is achieved.

Since the vapor chamber 200 has an advantage of small thermal resistance, the efficiency of heat conduction between the light source 100 and the heat pipe 300 can be ensured. Through the arrangement, at least two heat pipes 300 are respectively arranged on two opposite sides of the light source 100, all the heat pipes 300 do not need to be intensively paved on the light source 100, the heat pipes 300 are prevented from being intensively arranged on the radiator 400, the heat exchange efficiency between the heat pipes 300 and the radiator 400 is effectively improved, the heat of the heat pipes 300 can be timely diffused to the radiator 400, and the heat release of the heat pipes 300 on the radiator 400 is facilitated.

It should be noted that, the at least two heat pipes 300 are respectively disposed on two opposite sides of the light source 100, which means that at least one heat pipe 300 is disposed on a first side of the light source 100, at least two heat pipes 300 are also disposed on a second side of the light source 100, and the first side and the second side are two opposite sides of the light source 100, so that the heat pipes 300 can be prevented from being intensively disposed.

In the projection light source heat abstractor of the embodiment of the application, projection light source heat abstractor includes two heat pipes 300, two heat pipes 300 locate the relative both sides of light source 100 respectively, interval between two heat pipes 300 is great, be favorable to with heat pipe 300 evenly distributed on radiator 400, avoid heat pipe 300 excessively concentrate at radiator 400 and lead to the radiator 400 to concentrate the condition that the temperature in the region that sets up heat pipe 300 is too high, increase the difference in temperature of the part that heat pipe 300 and radiator 400 correspond the contact, the heat exchange efficiency between heat pipe 300 and radiator 400 has been improved, the heat of heat pipe 300 can in time spread on radiator 400, be favorable to heat pipe 300 to release heat on radiator 400. Of course, the number of heat pipes 300 may be adjusted appropriately according to the actual choice and specific requirements, and is not limited herein.

Specifically, as shown in fig. 2 and 3, a sinking groove 210 is formed on the surface of the temperature-uniforming plate 200, and a first end of the heat pipe 300 is embedded in the sinking groove 210. With this structure, the contact area between the heat pipe 300 and the temperature-uniforming plate 200 can be increased, which is beneficial to improving the heat conduction efficiency between the heat pipe 300 and the temperature-uniforming plate 200. In this embodiment, the heat pipe 300 may be completely embedded in the sinking groove 210, or may be partially embedded in the sinking groove 210, which is not limited herein.

Specifically, the first end of the heat pipe 300 is welded to the surface of the vapor chamber 200, and specifically, the first end of the heat pipe 300 is welded in the sinking groove 210, so that the heat pipe 300 is in close contact with the vapor chamber 200, thereby ensuring the heat conduction efficiency between the heat pipe 300 and the vapor chamber 200.

Specifically, as shown in fig. 2 and 3, the heat sink 400 is sleeved outside the second end of the heat pipe 300. With this structure, heat sink 400 is brought into close contact with heat pipe 300, thereby ensuring the heat conduction efficiency between heat pipe 300 and heat sink 400.

Specifically, as shown in fig. 4 and 5, the heat sink 400 includes a plurality of heat dissipation fins 411, the heat dissipation fins 411 are provided with through holes 4111, and the second end of the heat pipe 300 penetrates through the through holes 4111. With this structure, the heat pipe 300 is in contact with each of the heat dissipating fins 411, thereby ensuring heat conduction efficiency between the heat pipe 300 and the heat dissipating fins 411.

Specifically, as shown in fig. 5 and fig. 6, a flange 4112 is disposed at a position of the heat sink fin 411 corresponding to the through hole 4111, the flange 4112 is annular, and the flange 4112 wraps the heat pipe 300, so as to increase a contact area between the heat sink fin 411 and the heat pipe 300 and effectively improve a heat conduction efficiency between the heat sink fin 411 and the heat pipe 300.

Specifically, as shown in fig. 4 and 5, a plurality of heat dissipation fins 411 are sequentially stacked, and an inlet 420, a heat dissipation cavity 430, and an outlet 440, which are sequentially communicated, are enclosed between two adjacent heat dissipation fins 411. The projection light source heat sink further includes a heat dissipation fan 600, and the heat dissipation fan 600 is disposed on a side of the heat sink 400 corresponding to the inlet 420. With this structure, the heat dissipation fan 600 pushes the air flow to enter the heat dissipation cavity 430 from the inlet 420 and then to be discharged from the outlet 440, and the air flow takes away the heat of the heat pipe 300, thereby achieving the purpose of heat dissipation.

Specifically, as shown in fig. 3 to 5, the heat sink 400 includes a first fin group 410A and a second fin group 410B, and the two opposite sides of the second fin group 410B are respectively provided with the corresponding first fin group 410A. The first fin group 410A and the second fin group 410B each include a plurality of heat dissipation fins 411, and the area of the heat dissipation fins 411 of the second fin group 410B is larger than the area of the heat dissipation fins 411 of the first fin group 410A. In this structure, since the second fin group 410B is disposed in the middle of the heat sink 400, the heat of the second fin group 410B is concentrated, and the area of the heat dissipation fins 411 of the second fin group 410B exposed in the airflow is increased by increasing the area of the heat dissipation fins 411 of the second fin group 410B, so that the airflow can take away more heat, and the heat dissipation efficiency of the second fin group 410B is improved.

Specifically, as shown in fig. 3 to 5, the length of the heat dissipation fins 411 of the second fin group 410B is greater than the length of the heat dissipation fins 411 of the first fin group 410A, that is, the length of the heat dissipation fins 411 of the second fin group 410B is extended, so that the area of the heat dissipation fins 411 of the second fin group 410B exposed in the airflow is increased, which is convenient for the airflow to take away more heat, and the heat dissipation efficiency of the second fin group 410B is improved. It should be noted that the length of the heat dissipation fins 411 refers to the size of the heat dissipation fins 411 in the airflow direction.

Specifically, as shown in fig. 3 and fig. 5, the projection light source heat sink further includes a flow guiding member 500, the flow guiding member 500 is disposed on one side of the heat sink 400 corresponding to the outlet 440, the flow guiding member 500 is provided with an air duct 510, and the air duct 510 is communicated with the outlet 440. Under this structure, through water conservancy diversion piece 500, can discharge the heat, avoid the air current to flow back to light source 100 department and lead to the operating temperature of light source 100 to increase to guarantee the radiating effect to light source 100.

The application also provides a projection device which comprises the projection light source heat dissipation device. Since the projection device in the embodiment of the present application includes the technical solutions of all the embodiments described above, the projection device in the embodiment of the present application also has the beneficial effects of all the embodiments described above, and repeated descriptions are omitted here.

Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.

Some features of the present application, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the application, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A projection light source heat sink, comprising:

a temperature equalizing plate;

the light source is fixed on the surface of the temperature equalizing plate;

and the second end of the heat pipe is fixed on the radiator.

2. The heat sink as claimed in claim 1, wherein a heat sink is disposed on a surface of the temperature equalizing plate, and the first end of the heat pipe is embedded in the heat sink.

3. The projection light source heat sink according to claim 1, wherein the first end of the heat pipe is welded to the surface of the vapor chamber.

4. The projection light source heat sink according to any of claims 1-3, wherein the heat sink is sleeved outside the second end of the heat pipe.

5. The projection light source heat sink according to claim 4, wherein the heat sink comprises a plurality of heat dissipating fins, the heat dissipating fins having through holes, the second ends of the heat pipes extending through the through holes.

6. The projection light source heat sink according to claim 5, wherein a plurality of the heat dissipation fins are sequentially stacked, and an inlet, a heat dissipation cavity and an outlet which are sequentially communicated are enclosed between two adjacent heat dissipation fins;

the projection light source heat sink further comprises:

7. The projection light source heat sink according to claim 6, wherein the heat sink comprises a first fin group and a second fin group, and the first fin group is disposed on two opposite sides of the second fin group;

8. The apparatus of claim 7, wherein the second set of fins have fins with a length greater than the fins of the first set of fins.

9. The projection light source heat sink of claim 6 further comprising:

10. A projection apparatus comprising the projection light source heat sink of any one of claims 1-9.