Radiator, ray machine and projector

Abstract

The embodiment of the utility model relates to the technical field of projectors, and discloses a radiator, an optical machine and a projector, the radiator comprises a cooling fin, and a first fin group and a second fin group are attached and fixed to the two surfaces of the cooling fin respectively; the area of the cooling fins is larger than the area of the attaching face, attached to the cooling fins, of the first fin set, and the area of the cooling fins is further larger than the area of the attaching face, attached to the cooling fins, of the second fin set. Through the mode, the radiator provided by the embodiment of the utility model has a good radiating effect.

Description

Technical Field

[0001] The present application relates to the technical field of projectors, and in particular to a radiator, an optical machine, and a projector. Background Art

[0002] The main function of the radiator is to increase the air flow rate and flow rate flowing through the radiator to enhance the radiator's heat dissipation capacity and cool the engine accessories.

[0003] At present, a Chinese patent application numbered "201020122378.6" discloses a radiator, a heat dissipation system including the radiator, and a computer. The radiator includes a first fin group and a second fin group. There is a predetermined gap between the first fin group and the second fin group. The heat of the first fin group is transferred to the air in the gap, and then the air in the gap is transferred to the second fin group. The heat transfer efficiency between the first fin group and the second fin group is too low, and the heat dissipation effect of the radiator needs to be improved.

[0004] Therefore, how to improve the heat dissipation effect of the radiator has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] In view of the above problems, embodiments of the present application provide a heat sink, an optical machine, and a projector, which are used to improve the heat dissipation effect of the heat sink.

[0006] According to one aspect of an embodiment of the present application, a heat sink is provided, which includes a heat sink, and a first fin group and a second fin group are respectively bonded and fixed to both sides of the heat sink; the area of ​​the heat sink is larger than the area of ​​the bonding surface of the first fin group bonded to the heat sink, and the area of ​​the heat sink is also larger than the area of ​​the bonding surface of the second fin group bonded to the heat sink.

[0007] Preferably, the radiator further comprises a plurality of copper tubes, the heat sink is provided with a plurality of through holes with a certain area, the copper tubes are embedded in the through holes, and at least one side of the copper tubes is in contact with the first fin group and the other side is in contact with the second fin group.

[0008] Preferably, the copper tube is square.

[0009] Preferably, the second fin group is located downstream of the first fin group along the airflow direction, and the surface area of ​​the first fin group is smaller than the surface area of ​​the second fin group.

[0010] Preferably, the first fin group is composed of a plurality of first fins having a first pitch, and the second fin group is composed of a plurality of second fins having a second pitch greater than the first pitch.

[0011] According to another aspect of an embodiment of the present application, an optical machine is provided, which includes: a shell, the side wall of the shell is provided with an opening; a light source assembly, provided at the rear end of the shell; a lens assembly, provided at the front end of the shell, for refracting light emitted from the light source assembly through the internal space of the shell; a radiator as described in any of the above embodiments, the size of the heat sink of the radiator is adapted to the size of the opening, the heat sink is snapped into the opening of the shell, the first fin group of the radiator extends into the interior of the shell, and the second fin group of the radiator is located outside the shell.

[0012] Preferably, the length of the first fin group is greater than that of the second fin group. The optical engine further comprises a fan, which is arranged on the outer side wall of the shell near the second fin group, and the air outlet of the fan is aligned with the second fin group.

[0013] Preferably, the width of the first fin group is smaller than the width of the second fin group.

[0014] Preferably, a drawer rod is fixed on the radiator, and the drawer rod at least partially protrudes from the shell.

[0015] According to another aspect of the embodiments of the present application, a projector is provided, comprising the optical engine as described in any of the above embodiments.

[0016] The heat sink provided in the embodiment of the present application has a first fin group and a second fin group fixed on both sides of the heat sink, so that the heat sink can be used as a heat transfer medium between the first fin group and the second fin group, rather than mainly using air as the heat transfer medium, thereby improving the heat transfer efficiency between the first fin group and the second fin group, thereby improving the heat dissipation effect of the radiator; and the area of ​​the heat sink is larger than the area of ​​the bonding surface of the first fin group bonded to the heat sink, so as to expand the contact area between the heat sink and the first fin group, and improve the heat transfer efficiency between the heat sink and the first fin group, and the area of ​​the heat sink is also larger than the area of ​​the bonding surface of the second fin group bonded to the heat sink, so as to expand the contact area between the heat sink and the second fin group, and improve the heat transfer efficiency between the heat sink and the second fin group, thereby improving the heat dissipation effect of the radiator.

[0017] The optical engine provided in the embodiment of the present application is configured such that the heat sink of the radiator is clamped to an opening provided on the side wall of the shell, the first fin group of the radiator is extended into the interior of the shell, and the second fin group of the radiator is located outside the shell, so that the heat inside the shell of the optical engine can be dissipated by the radiator having a better heat dissipation effect, thereby improving the operating stability of the optical engine.

[0018] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0020] Figure 1 A perspective view of a heat sink provided by an embodiment of the present application is shown;

[0021] Figure 2 An exploded view of a heat sink provided by an embodiment of the present application is shown;

[0022] Figure 3 Shows a front view of a radiator provided in an embodiment of the present application;

[0023] Figure 4 A perspective view of an optical machine provided in an embodiment of the present application is shown;

[0024] Figure 5 The internal structure diagram of the optical engine provided by the embodiment of the present application is shown;

[0025] Figure 6 An exploded view of the optical engine provided in an embodiment of the present application is shown.

[0026] The accompanying drawings in the specific implementation manner are as follows:

[0027] 1. Optical machine;

[0028] 10. Radiator; 11. First fin group; 12. Second fin group; 13. Heat sink; 131. Through hole; 14. Copper tube;

[0029] 21. Shell; 211. Opening; 22. Light source assembly; 23. Lens assembly; 24. Fan; 25. Pull-out stick. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0032] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0033] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0035] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0036] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0037] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0038] The radiator provided in the embodiment of the present application is suitable for dissipating heat for household appliances such as projectors and air conditioner outdoor units. In the embodiment of the present application, the radiator provided in the embodiment of the present application is described by taking a projector and an optical machine in the projector as an example.

[0039] See also Figures 1 to 6 An embodiment of the present application provides a heat sink, which includes a heat sink 10, and a first fin group 11 and a second fin group 12 are respectively bonded and fixed to both sides of the heat sink 13; the area of ​​the heat sink 13 is larger than the area of ​​the bonding surface of the first fin group 11 bonded to the heat sink 13, and the area of ​​the heat sink 13 is also larger than the area of ​​the bonding surface of the second fin group 12 bonded to the heat sink 13.

[0040] Preferably, the radiator 10 further includes a plurality of copper tubes 14 , the heat sink 13 is provided with a plurality of through holes 131 with a certain area, the copper tubes 14 are embedded in the through holes 131 , and at least one side of the copper tubes 14 is attached to the first fin group 11 and the other side is attached to the second fin group 12 .

[0041] Preferably, the copper tube 14 is square.

[0042] The heat sink 13 is preferably made of aluminum.

[0043] The copper tube 14 has good thermal conductivity. By embedding the copper tube 14 into the radiator 10, the thermal conductivity of the heat sink 13 can be improved. Furthermore, the copper tube 14 is arranged to be square to ensure that the copper tube 14 has sufficient contact area with the first fin group 11 or the second fin group 12.

[0044] Preferably, the second fin group 12 is located downstream of the first fin group 11 along the airflow direction, and the surface area of ​​the first fin group 11 is smaller than the surface area of ​​the second fin group 12 .

[0045] For a low-power optical engine, for example, an optical engine used for a small-sized home children's projector, considering that the fan power of the optical engine 1 is low, resulting in weak air flow inside the optical engine 1, or even the optical engine 1 is not equipped with a fan and there is no air flow inside the optical engine 1, after the first fin group 11 absorbs the heat of the heating element in the optical engine 1, the first fin group 11 can directly transfer the heat to the heat sink 13 by fitting with the heat sink 13, and the heat sink 13 then transfers the heat to the second fin group 12 by fitting with the second fin group 12, and the second fin group 12 then exchanges heat with the air with a lower temperature outside the optical engine 1 to achieve heat dissipation of the optical engine 1.

[0046] For a high-power optical engine, a fan can be set inside the optical engine 1 to blow the gas flow in the first fin group 11, forming an airflow from the first fin group 11 to the heat sink 13, thereby improving the heat dissipation efficiency of the first fin group 11; a fan can also be set outside the optical engine 1 to blow the gas flow in the second fin group 12, thereby improving the heat dissipation efficiency of the second fin group 12.

[0047] Therefore, by setting the surface area of ​​the first fin group 11 to be smaller than that of the second fin group 12 , the contact area between the second fin group 12 and the lower temperature air outside the optical engine 1 can be increased, thereby improving the heat dissipation efficiency.

[0048] Preferably, the first fin group 11 is composed of a plurality of first fins having a first pitch, and the second fin group 12 is composed of a plurality of second fins having a second pitch greater than the first pitch, such as Figure 3 As shown, Figure 3 g1 in the figure is used to represent the first spacing between the first fins of the first fin group 11. Figure 3 g2 in FIG. 1 is used to represent the second spacing between the plurality of second fins of the second fin group 12 .

[0049] The smaller the spacing between the fins, the more fins there are, and the larger the contact area is to absorb more heat; the larger the spacing between the fins, the faster the air flows in each channel formed by adjacent fins, and it becomes easier for the radiator to dissipate heat into the air.

[0050] Therefore, the first spacing of the first fin group 11 that needs to absorb the internal heat of the optical machine 1 can be set to be smaller to improve the efficiency of the first fin group 11 in absorbing heat, and the second spacing of the second fin group 12 that needs to dissipate heat into the air can be set to be larger to improve the heat dissipation efficiency of the second fin group 12, thereby improving the heat dissipation efficiency of the optical machine 1.

[0051] The heat sink 10 provided in the embodiment of the present application has a first fin group 11 and a second fin group 12 respectively attached and fixed on both sides of the heat sink 13, so that the heat sink 13 can be used as a heat transfer medium between the first fin group 11 and the second fin group 12, rather than mainly using air as the heat transfer medium, thereby improving the heat transfer efficiency between the first fin group 11 and the second fin group 12, thereby improving the heat dissipation effect of the heat sink 10; and the area of ​​the heat sink 13 is larger than the area of ​​the bonding surface of the first fin group 11 bonded to the heat sink 13, so as to expand the contact area between the heat sink 13 and the first fin group 11, thereby improving the heat transfer efficiency between the heat sink 13 and the first fin group 11, and the area of ​​the heat sink 13 is also larger than the area of ​​the bonding surface of the second fin group 12 bonded to the heat sink 13, so as to expand the contact area between the heat sink 13 and the second fin group 12, thereby improving the heat dissipation effect of the heat sink 10.

[0052] According to another aspect of the embodiment of the present application, an optical machine is also provided, such as Figures 4 to 6 As shown, the optical machine 1 includes: a housing 21, a side wall of the housing 21 is provided with an opening 211; a light source assembly 22, provided at the rear end of the housing 21; a lens assembly 23, provided at the front end of the housing 21, for refracting light incident from the light source assembly 22 through the interior space of the housing 21; Figures 1 to 3 In the radiator 10 shown, the size of the heat sink 13 of the radiator 10 is adapted to the size of the opening 211, the heat sink 13 is snapped into the opening 211 of the shell 21, the first fin group 11 of the radiator 10 extends into the interior of the shell 21, and the second fin group 12 of the radiator 10 is located outside the shell 21.

[0053] Preferably, the length of the first fin group 11 is greater than that of the second fin group 12 . The optical engine 1 further includes a fan 24 , which is disposed on the outer wall of the housing 21 near the second fin group 12 , and the air outlet of the fan 24 is aligned with the second fin group 12 .

[0054] Furthermore, the width of the first fin group 11 is smaller than the width of the second fin group 12 .

[0055] Figure 2 a1 is used to represent the length of the first fin group 11. Figure 2 b1 is used to represent the width of the first fin group 11. Figure 2 a2 is used to represent the length of the second fin group 12. Figure 2 b2 is used to represent the width of the second fin group 12 .

[0056] Please see further Figure 5, extending the longer first fin group 11 into the interior of the shell 21 can improve the heat absorption efficiency of the radiator 10 on the interior of the shell 21; arranging the longer second fin group 12 outside the shell 21, and arranging the fan 24 close to the second fin group 12 on the outer wall of the shell 21, can make the wind from the blowing port of the fan 24 blow into the channel formed by the multiple fins of the second fin group 12 as much as possible to promote the flow of air in the second fin group 12; and arranging the shorter second fin group 12 outside the shell 21, so that a certain position can be reserved on the outer wall of the shell 21 to install the fan 24.

[0057] Preferably, a draw rod 25 is fixed to the radiator 10 , and the draw rod 25 at least partially protrudes from the housing 21 , so that the radiator 10 can be installed into or removed from the housing 21 by the draw rod 25 .

[0058] The optical engine 1 provided in the embodiment of the present application is configured such that the heat sink 13 of the radiator 10 is snapped into the opening 211 provided on the side wall of the housing 21, the first fin group 11 of the radiator 10 is extended into the interior of the housing 21, and the second fin group 12 of the radiator 10 is located outside the housing 21, so that the heat inside the housing 21 of the optical engine 1 can be dissipated by the radiator 10 with better heat dissipation effect, thereby improving the operating stability of the optical engine 1.

[0059] According to another aspect of the embodiments of the present application, a projector is provided, comprising the optical engine 1 as described in any of the above embodiments.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A radiator, characterized in that: The heat sink comprises a heat sink, and a first fin group and a second fin group are respectively fixed on both sides of the heat sink; The area of ​​the heat sink is larger than the area of ​​the surface of the first fin group attached to the heat sink, and the area of ​​the heat sink is also larger than the area of ​​the surface of the second fin group attached to the heat sink.

2. The radiator according to claim 1, characterized in that The radiator further comprises a plurality of copper tubes. The heat sink is provided with a plurality of through holes of a certain area. The copper tubes are embedded in the through holes. One side of at least part of the copper tubes is in contact with the first fin group, and the other side is in contact with the second fin group.

3. The radiator according to claim 2, characterized in that The copper tube is square.

4. The radiator according to claim 1, wherein The second fin group is located downstream of the first fin group along the airflow direction, and the surface area of ​​the first fin group is smaller than the surface area of ​​the second fin group.

5. The radiator according to claim 4, characterized in that The first fin group is composed of a plurality of first fins having a first pitch, and the second fin group is composed of a plurality of second fins having a second pitch greater than the first pitch.

6. An optical machine, characterized in that: The optical machine includes: a housing, wherein a side wall of the housing is provided with an opening; a light source assembly, disposed at the rear end of the housing; a lens assembly, disposed at the front end of the housing, for refracting light incident from the light source assembly through the interior space of the housing; The radiator according to any one of claims 1 to 5, wherein the size of the heat sink of the radiator is adapted to the size of the opening, the heat sink is snapped into the opening of the shell, the first fin group of the radiator extends into the interior of the shell, and the second fin group of the radiator is located outside the shell.

7. The optical machine according to claim 6, wherein: The length of the first fin group is greater than that of the second fin group. The optical engine further includes a fan, which is arranged on the outer side wall of the shell near the second fin group, and the air outlet of the fan is aligned with the second fin group.

8. The optical machine according to claim 7, wherein: The width of the first fin group is smaller than the width of the second fin group.

9. The optical machine according to claim 8, wherein: A draw rod is also fixed on the radiator, and at least a portion of the draw rod protrudes from the shell.

10. A projector, characterized in that: Comprising the optical machine as described in any one of claims 6 to 9.

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