CN112180658B - Projection equipment and projection system - Google Patents
Projection equipment and projection system Download PDFInfo
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- CN112180658B CN112180658B CN202011058307.9A CN202011058307A CN112180658B CN 112180658 B CN112180658 B CN 112180658B CN 202011058307 A CN202011058307 A CN 202011058307A CN 112180658 B CN112180658 B CN 112180658B
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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Abstract
The invention provides a projection device and a projection system, relates to the technical field of projection, and aims to solve the problem of uneven temperature distribution on a light source shell of the projection device in the related art. The projection equipment comprises a light source, a radiator, a heat conducting piece, a first heat pipe and a second heat pipe; the heat conducting part comprises a heat conducting part which is contacted with the light source; the first end of the first heat pipe and the first end of the second heat pipe are both connected with the radiator, and the second end of the first heat pipe and the second end of the second heat pipe are respectively connected with the heat conducting piece from two opposite sides of the heat conducting part. The invention can be used in projection equipment such as laser projectors.
Description
Technical Field
The invention relates to the technical field of projection, in particular to projection equipment and a projection system.
Background
The laser projection device is one kind of projection device, and uses a laser as a light source, and when working, the laser beam generated by the laser is projected onto a screen through the action of an optical system, an optical machine and a lens to form a projection picture. The laser can produce a large amount of heat energy at the during operation, in order to guarantee that the laser can normally work, is equipped with heat abstractor in projection equipment inside usually to dispel the heat to the laser, thereby guarantee luminous efficacy, reliability and the life-span of laser.
Disclosure of Invention
The embodiment of the invention provides a projection device and a projection system, which are used for solving the problem of uneven temperature distribution on a light source shell of the projection device in the related art.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a projection apparatus, including a light source, an optical engine, a lens, a heat sink, a heat conducting element, a first heat pipe, and a second heat pipe, wherein the optical engine is connected to the light source; the lens is connected with the optical machine; the heat conducting member includes a heat conducting portion, the heat conducting portion being in contact with the light source; the first end of the first heat pipe and the first end of the second heat pipe are both connected with the radiator, and the second end of the first heat pipe and the second end of the second heat pipe are respectively connected with the heat conducting piece from two opposite sides of the heat conducting part.
In a second aspect, an embodiment of the present invention provides a projection system, which includes a projection screen and the projection apparatus described in the first aspect, wherein a lens of the projection apparatus is used for projecting a projection light beam onto the projection screen to form a projection picture.
In the projection apparatus and the projection system provided in the embodiments of the present invention, the second end of the first heat pipe and the second end of the second heat pipe are respectively connected to the heat conducting member from two opposite sides of the heat conducting portion, so that the first heat pipe and the second heat pipe can compensate each other for the area with weak heat absorption, specifically: the heat conducting part is arranged on the first side and the second side, the first side is connected with the first heat pipe, the second side is connected with the second heat pipe, the area of the heat conducting part close to the surface of the second side is an area with weak heat absorption for the first heat pipe, and the second heat pipe is connected with the heat conducting part from the second side, so that the heat absorption of the area of the heat conducting part close to the surface of the second side can be enhanced; for the second heat pipe, the area of the heat conducting member close to the first side surface is an area with weak heat absorption, the first heat pipe is connected with the heat conducting member from the first side, the heat absorption of the area of the heat conducting member close to the first side surface can be enhanced, and therefore the temperature difference on the heat conducting member can be reduced, the temperature difference on the light source is reduced, and the temperature distribution on the light source is more uniform.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a projection system according to some embodiments of the present invention;
FIG. 2 is a schematic view of the projection apparatus shown in FIG. 1 with the upper housing removed;
FIG. 3 is a layout diagram of the major components in a projection device in some embodiments of the invention;
FIG. 4 is a top view of the components shown in FIG. 3;
FIG. 5 is an exploded view of the components shown in FIG. 3;
FIG. 6 is a schematic view of the connections between the heat sink, the first heat pipe, and the light source of FIG. 3;
fig. 7 is a schematic view of a connection structure between the heat-conducting member and the light source housing at a first viewing angle (viewing angle from the side of the light source);
fig. 8 is a schematic view of a connection structure between the heat-conducting member and the light source housing at a second viewing angle (viewing angle from the side of the heat sink);
fig. 9 is a schematic view of a connection structure between the heat conductive member and the light source housing at a third viewing angle (viewing angle from the side of the heat dissipation fan);
FIG. 10 is an exploded view of the heat dissipation blower, heat sink, heat conductive member, and first heat pipe of FIG. 9;
FIG. 11 is a schematic view of a heat conducting member, a heat sink, a heat dissipation fan, and a light source housing according to further embodiments of the present invention;
FIG. 12 is a schematic view of the components of FIG. 11 from a viewing perspective;
FIG. 13 is a schematic view of the component of FIG. 11 from another perspective;
FIG. 14 is an exploded view of the components of FIG. 11;
FIG. 15 is a schematic view of the arrangement of the first heat pipe in FIG. 12;
FIG. 16 is a schematic diagram of the second heat pipe arrangement shown in FIG. 12;
FIG. 17 is a schematic view of a first fastener connecting a light source and a heat conductive member in other embodiments of the invention (as viewed from the light source side);
FIG. 18 is a cross-sectional view E-E of FIG. 17;
FIG. 19 is a schematic view of a second fastener connecting a heat conductive member and a light source in other embodiments of the invention (as viewed from the heat conductive member side);
fig. 20 is a sectional view F-F of fig. 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the term "coupled" may refer to a direct connection, an indirect connection through intervening media, or a connection between two elements; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
One projection device in the related art is a projection device that radiates a light source by using an air-cooling radiation technology, and includes a light source, a heat-conducting member, a radiator, a heat-radiating fan, and a heat pipe, where the heat-conducting member is in contact with the light source, one end of the heat pipe is connected to the heat-conducting member from one side (i.e., a connection side) of the heat-conducting member, and the other end of the heat pipe is connected to the radiator. When the heat-conducting piece works, the heat-conducting piece absorbs heat of the light source, the heat of the light source is conducted into a radiator by utilizing the phase change latent heat of the heat pipe, and the heat-radiating fan supplies air to the radiator to perform forced convection heat radiation on the radiator, so that the heat of the light source shell can be quickly radiated.
The inventor of the present application has found that, along the flowing direction of the heat transfer medium in the heat pipe, the heat absorption capacity of the evaporation end of the heat pipe (i.e., the portion of the heat pipe where the heat pipe is in contact with the heat conducting member) is gradually decreased, i.e., the evaporation end of the heat pipe has a strong heat absorption capacity at a position close to the connecting side surface of the heat conducting member, and has a weak heat absorption capacity at a position far from the connecting side surface of the heat conducting member, so that the temperature of the heat conducting member at a position close to the connecting side surface of the heat conducting member is low, and the temperature of the heat conducting member at a position far from the connecting side surface of the heat conducting member is high, so that the temperature distribution on the heat conducting member has a certain difference, and further the temperature distribution on the light source is not uniform, and the difference is large.
In the embodiment of the invention, the first heat pipe and the second heat pipe are respectively connected with the heat conducting part from the two opposite sides of the heat conducting part (the part of the heat conducting part contacted with the light source), so that the heat absorption capacities of the first heat pipe and the second heat pipe at the positions of the heat conducting part close to the two opposite side surfaces can be mutually compensated, thereby reducing the temperature difference on the heat conducting part and further reducing the temperature difference on the light source.
Fig. 1 is a schematic diagram of a projection system according to some embodiments of the present invention. The projection system comprises a projection device 100 and a projection screen 200, wherein the projection screen 200 is positioned obliquely above the projection device 100, and the projection screen 200 can be arranged on a flat mounting carrier such as a wall, so as to ensure the flatness of the projection screen 200.
The projection device 100 is placed on a flat placing surface, the projection device 100 comprises a machine shell 1, the machine shell 1 comprises a lower shell 12 and an upper shell 11, the upper shell 11 and the lower shell 12 are detachably connected through screws, supporting legs 13 are arranged on the lower shell 12, and the bottoms of the supporting legs 13 can be made of rubber materials so as to increase the friction force between the supporting legs 13 and the placing surface; the top end of the upper shell 11 is provided with a feeding opening 14. In operation, projection device 100 projects a projection beam from projection port 14 onto projection screen 200 to form a projection image for viewing by a user.
As shown in fig. 2 to 5, fig. 2 is a schematic structural diagram of the projection apparatus 100 in fig. 1 with the upper housing 11 removed, fig. 3 is a layout diagram of main components in the projection apparatus 100, fig. 4 is a top view of the components shown in fig. 3, and fig. 5 is an exploded view of the components shown in fig. 3.
The projection apparatus 100 further includes a light source 2, a light path adjusting device 31, an optical engine 32, and a lens 33 disposed on the lower housing 12 and connected in sequence, wherein the light source 2, the light path adjusting device 31, the optical engine 32, and the lens 33 are arranged in a U shape. Specifically, the light source 2 and the optical path adjusting device 31 are arranged in the width direction of the cabinet 1 (Y direction in fig. 2), the optical path adjusting device 31 and the optical machine 32 are arranged in the length direction of the cabinet 1 (X direction in fig. 2), the optical machine 32 and the lens 33 are arranged in the width direction of the cabinet 1, and the light source 2 and the lens 33 are disposed apart from each other in the length direction of the cabinet 1.
The light source 2, the optical path adjusting device 31, the optical engine 32, and the lens 33 each have a housing to support and seal the optical components inside.
As shown in fig. 3 and 5, the light source 2 is a pure three-color laser light source, and the light source 2 can emit red laser light, blue laser light and green laser light. A lens assembly is provided in the housing of the optical path adjusting device 31 to shape the optical path of the laser light emitted by the laser.
The light path adjusting device 31 has a light outlet, which is located on a surface that is connected to the optical engine 32, and the light source 2 provides an illumination beam for the optical engine 32 through the connection. The optical device 32 has a light inlet 321 and a light outlet 322 according to the design of the internal illumination light path of the optical device 32, the light inlet of the optical device 32 is connected to the light outlet of the light path adjusting device 31, and the light outlet of the optical device 32 is connected to the lens 33. The light inlet 321 and the light outlet 322 of the optical engine 32 are located on two side surfaces of the housing of the optical engine 32 in a vertical relationship, where the vertical relationship is a vertical relationship in a spatial position relationship.
As shown in fig. 2, the projection apparatus 100 further includes a display driving unit 34, a heat dissipation fan 35, and a sound box 36 disposed on the lower casing 12, the lens 33, the display driving unit 34, and the heat dissipation fan 35 are arranged along the length direction of the chassis 1, the display driving unit 34 is disposed between the lens 33 and the heat dissipation fan 35, and the heat dissipation fan 35 is disposed at one side edge of the lower casing 12 along the length direction of the chassis 1, that is, the right side edge in fig. 2. The acoustic unit 36 is provided at one side edge of the lower case 12 in the width direction of the cabinet 1, and is disposed close to the lens 33.
The display driving unit 34 includes a power board, a control board, a display board, and the like, which are stacked.
As shown in fig. 2 and 3, the projection apparatus 100 further includes a heat sink 4, a heat conducting member 5, a first heat pipe 61, and a heat dissipation fan 7, wherein the heat sink 4 and the light source 2 are arranged along the length direction of the housing 1, and the heat sink 4 is located on a side of the light source 2 away from the lens 33.
The heat sink 4 includes a plate-shaped fin assembly 40, and along the first direction Y, the fin assembly 40 includes a first assembly end surface 41 and a second assembly end surface 42 that are disposed opposite to each other, and a first heat sink insertion hole 411 is opened on the first assembly end surface 41.
Of course, the fin assembly 40 may have other shapes, such as a circular shape, a polygonal shape, etc., in cross section, besides the plate shape, and is not limited in detail.
As shown in fig. 6 to 8, fig. 6 is a schematic view of the connection between the heat sink 4, the first heat pipe 61, and the light source 2 in fig. 3, fig. 7 is a schematic view of the connection structure between the heat conductive member 5 and the light source 2 at a first viewing angle (viewing angle viewed from the side of the light source 2), and fig. 8 is a schematic view of the connection structure between the heat conductive member 5 and the light source 2 at a second viewing angle (viewing angle viewed from the side of the heat sink 4).
The heat conducting member 5 and the light source 2 are arranged along the second direction X, the heat conducting member 5 is located between the light source 2 and the fin assembly 40, the heat conducting member 5 is substantially rectangular, and the length direction of the heat conducting member 5 is parallel to the first direction Y. Along the length direction of the heat conducting member 5, the heat conducting member 5 includes a first heat conducting member end surface 51 and a second heat conducting member end surface 52 which are arranged oppositely, the first heat conducting member end surface 51 is located at one end of the heat conducting member 5 close to the first component end surface 41, and a first heat conducting member insertion hole 511 is formed in the first heat conducting member end surface 51.
As shown in fig. 7 and 8, a first end (condensation end) of the first heat pipe 61 is inserted into the first heat sink insertion hole 411, and a second end (evaporation end) is inserted into the first heat-conductive member insertion hole 511. Since the first heat-conducting member insertion hole 511 is located on the side of the heat-conducting member 5 close to the first assembly end face 41, the first heat pipe 51 can be inserted into the first heat sink insertion hole 411 and the first heat-conducting member insertion hole 511 from the side of the heat-conducting member 5, thereby facilitating the installation of the first heat pipe 61 with the fin assembly 40 and the heat-conducting member 5. Meanwhile, the first heat pipe 61 is inserted into the first heat conducting piece insertion hole 411 and the first radiator insertion hole 411, so that the side wall of the first heat pipe 61 can be fully contacted with the heat conducting piece 4 and the fin assembly 40, the heat exchange efficiency between the first heat pipe 61 and the heat conducting piece 5 and between the first heat pipe 61 and the fin assembly 40 is improved, and the first heat pipe 61 is favorable for transferring heat on the light source 2 to the fin assembly 40 in time and dissipating the heat.
Of course, the connection between the first heat pipe 61 and the heat conducting member 5 is not limited to the above-mentioned insertion connection, and a fixing groove extending along the first direction Y may be formed on the side surface of the heat conducting member 5 close to the fin assembly 40, and the first heat pipe 5 extends into the fixing groove from the side of the heat conducting member 5 close to the first assembly end surface 41 and contacts with the groove wall of the fixing groove, so that the first heat pipe 5 can also transmit the heat of the light source 2 absorbed by the heat conducting member 5 to the fin assembly.
As shown in fig. 8, the light source 2 includes a light source housing 21 and a laser 22, and a part of the laser 22 is located in the light source housing 21 and another part thereof protrudes from the light source housing 21. The heat conduction member 5 includes a heat conduction portion 53, the heat conduction portion 53 is located between the first heat conduction member end surface 51 and the second heat conduction member end surface 52, the heat conduction portion 53 is one side surface (i.e., a heat conduction surface) of the heat conduction member 5 in the thickness direction thereof, the heat conduction portion 53 is in surface contact with a portion of the laser 22 protruding outside the light source housing 21, and the heat conduction member 5 is connected to the light source 2 through the connection structure 8. The surface contact can improve the heat transfer efficiency between the heat conducting portion 53 and the light source 2 compared to other contact methods, such as point contact and line contact, thereby improving the heat dissipation effect of the light source 2.
Of course, the heat conducting member 5 may have other shapes besides a rectangular block shape, such as a semi-cylindrical shape (i.e. a semi-circle in cross section), and the like, which may be determined according to actual situations; the heat conducting portion 53 may be a heat conducting block located on the side of the heat conducting member 5 close to the light source 2, or may be a heat conducting block located on the side of the heat conducting member 5 close to the light source 2, and the heat conducting block is in contact with the light source 2 or embedded in the light source housing 21 of the light source 2, which may be determined according to actual conditions.
As shown in fig. 8, the heat dissipation fan 7 is located on a side of the fin assembly 40 away from the light source 2 in the second direction X, and is opposite to the fin assembly 40. Thus, the wind generated by the heat dissipation fan 7 can pass through the fin assembly 40 and dissipate the heat therefrom.
Of course, the relationship between the heat dissipation fan 7 and the fin assembly 40 is not limited to the arrangement shown in fig. 8, and other arrangements that can position the fin assembly 40 on the flow path of the wind generated by the heat dissipation fan 7 may be adopted, such as providing an air duct between the heat dissipation fan 7 and the fin assembly 40.
Wherein the first direction Y is consistent with the width direction of the chassis 1, consistent with the arrangement direction of the first component end face 41 and the second component end face 42, and consistent with the arrangement direction of the first heat-conducting member end face 51 and the second heat-conducting member end face 52; the second direction X is consistent with the flow direction of the heat exchange air flow (the air generated by the heat dissipation fan 7), and is consistent with the arrangement direction of the fin assembly 40 and the light source 2; the first direction Y and the second direction X are perpendicular to the height direction (H direction in fig. 3) of the fin assembly 40 two by two.
As shown in fig. 7 and 8, during operation, the temperature of the laser 22 rises, since the heat conducting member 5 and the laser 22 are in contact, the heat conducting member 5 can absorb and transfer heat on the laser 22 to the first heat pipe 61, the part of the first heat pipe 61 in contact with the heat conducting member 5 is the evaporation end of the first heat pipe 61, the heat transfer medium inside the evaporation end of the first heat pipe 61 is heated to change phase, the liquid changes into gas, the gas enters the inside of the fin assembly 40 of the heat sink 4 along the first heat pipe 61, the part of the first heat pipe 61 in contact with the heat sink 4 is the condensation end of the first heat pipe 61, and the condensation end of the first heat pipe 61 transfers heat to the fin assembly 40; the heat radiation fan 7 supplies air to the fin assembly 40, and can perform forced convection heat radiation on the fin assembly 40 to rapidly dissipate heat, at the moment, the temperature of the condensation end of the first heat pipe 61 is reduced, the temperature of the heat transfer medium in the condensation end is reduced to be changed into liquid from gas, and the heat transfer medium flows back to the evaporation end of the first heat pipe 61 along the inner wall of the first heat pipe 61, so that the heat transfer medium circulates between the evaporation end and the condensation end of the first heat pipe 61, continuously transfers the heat of the laser 22 to the fin assembly 40 of the radiator 4 and is then dissipated by the fin assembly 40, and therefore the normal work of the laser 22 is guaranteed.
As shown in fig. 8, the heat conducting member 5 is disposed between the fin assembly 40 and the light source 2, so that the heat conducting member 5 is located on a flow path of wind generated by the heat dissipation fan 7, and the wind generated by the heat dissipation fan 7 can dissipate heat of the heat conducting member 5, thereby improving a heat dissipation effect of the heat conducting member 5, and further improving a heat dissipation efficiency of the heat conducting member 5 to the light source housing 21.
The radiator 4 adopts an air cooling mode to radiate heat, so that fewer radiating parts are needed, the heat can be radiated by arranging the radiating fan 7, the cost is lower, and the adaptability is stronger.
Of course, the heat sink 4 may also dissipate heat in a liquid cooling manner, in addition to the air cooling manner, specifically, the heat sink 4 is a shell-and-tube heat exchanger, and the first end of the first heat pipe 61 is inserted into a shell of the shell-and-tube heat exchanger. A shell of the shell-and-tube heat exchanger is provided with a cryogenic liquid, such as cold water, to dissipate heat from the condenser section of the heat pipe (the portion of the heat pipe inserted into the shell of the shell-and-tube heat exchanger).
In some embodiments, as shown in fig. 6 to 9, fig. 9 is a schematic view of the connection structure 8 between the heat conductive member 5 and the light source housing 21 in a third view (a view viewed from the side of the heat dissipation fan 7). The connecting structure 8 includes a first threaded hole 81 formed in the heat conducting member 5, a first through hole 82 formed in the light source housing 21, and a first fastening member 83, the first fastening member 83 is a threaded fastening member, and includes a first head 831 (i.e., a first clamping portion) and a first screw 832, the first screw 832 passes through the first through hole 82 and is engaged with the first threaded hole 81, and the first head 831 is clamped with an edge of the first through hole 82 to prevent the first fastening member 83 from moving toward a direction close to the heat conducting member 5.
The connecting structure 8 further includes a second through hole 84 opened on the heat conducting member 5, a second threaded hole 85 opened on the light source housing 21, and a second fastening member 86, and the second fastening member 86 is a threaded fastening member. And includes a second head portion 861 (i.e., a second catching portion) and a second screw 862, the second screw 862 passes through the second through hole 84 to be matched with the second threaded hole 85, and the second head portion 862 catches an edge of the second through hole 84 to prevent the second fastening member 86 from moving in a direction close to the light source 2.
As shown in fig. 7, the side wall of the light source housing 21 contacting the heat conducting member 5 protrudes outward to form a mounting flange 23, and the first through hole 82 is disposed on the mounting flange 23 to facilitate mounting of the first fastening member 83. The first fastening member 83 and the second fastening member 86 may be screws, bolts, or the like, and are not particularly limited herein.
In some embodiments, the first fastening member 83 and the second fastening member 86 may also be non-threaded fastening members, specifically, as shown in fig. 17 and 18, fig. 17 is a schematic view (viewed from the light source 2 side) of the first fastening member 83 connecting the light source 2 and the heat conducting member 5, fig. 18 is a cross-sectional view from E to E of fig. 17, the connecting structure 8 includes a first through hole 82 opened on the light source housing 21, a third through hole 87 opened on the heat conducting member 5, and the first fastening member 83, the first fastening member 83 includes a first clamping portion 831 and a first claw 833, the first through hole 82 and the third through hole 87 are both long holes to ensure that the first claw 833 can pass through, after the first claw 833 passes through the first through hole 82 and the third through hole 87, the first clamping portion 833 is rotated by a certain angle to clamp the edge of the first through hole 87, and the first clamping portion 831 is clamped with the edge of the first through hole 82, to prevent the first fastening member 83 from moving in a direction approaching the heat conductive member 5.
As shown in fig. 19 and 20, fig. 19 is a schematic view (viewed from the heat-conducting member 5 side) of the second fastening member 86 connecting the heat-conducting member 5 and the light source 2, and fig. 20 is a sectional view F-F of fig. 19. The connecting structure 8 further includes a second through hole 84 provided in the heat conducting member 5, a fourth through hole 88 provided in the light source housing 21, and a second fastening member 86, the second fastening member 86 includes a second clamping portion 861 and a second jaw 863, the second through hole 84 and the fourth through hole 88 are both long holes, so as to ensure that the second jaw 863 can pass through, after the second jaw 863 passes through the second through hole 84 and the fourth through hole 88, the second jaw 863 is clamped with the edge of the fourth through hole 88 by rotating a certain angle, and the second clamping portion 861 is clamped with the edge of the second through hole 84, so as to prevent the second fastening member 86 from moving in the direction close to the light source 2.
In order to enable the first fastening member 83 to connect the heat conducting member 5 and the light source 2 more firmly, as shown in fig. 18, the connecting structure 8 further includes a first elastic pad 891, the first elastic pad 891 is disposed at the third through hole 87, and the first claw 833 passes through the third through hole 87 and the first elastic pad 891 and then is clamped with the first elastic pad 891. Because first resilient gasket 891 has a certain amount of compression, first resilient gasket 891 can absorb certain tolerance through the compression when first jack catch 833 is blocked with first resilient gasket 891 like this, makes first fastener 83 can be connected more firmly between heat-conducting member 5 and light source casing 21, avoids appearing becoming flexible between heat-conducting member 5 and the light source casing 21.
In order to enable the second fastening member 86 to connect the heat conducting member 5 and the light source 2 more firmly, as shown in fig. 20, the connecting structure 8 further includes a second elastic washer 892, the second elastic washer 892 is disposed at the fourth through hole 88, and the second clamping claw 863 passes through the fourth through hole 88 and the second elastic washer 892 and then is clamped with the second elastic washer 892. Because second elastic washer 892 has certain compressive strength, second elastic washer 892 can absorb certain tolerance through the compression when second jack catch 863 and second elastic washer 892 joint like this, makes second fastener 86 can be connected more firmly between heat-conducting piece 5 and the light source casing 21, avoids appearing becoming flexible between heat-conducting piece 5 and the light source casing 21.
The above-mentioned fasteners connected between the heat conducting member 5 and the light source housing 21 are classified into two types, one is a first fastener 83, the first fastener 83 is installed from one side of the light source housing 21, the first fastener 83 is connected with the heat conducting member 5 after passing through the first through hole 82 on the light source housing 21, and thus, the first fastener 83 generates a pulling force on the heat conducting member 5; the second type is a second fastening member 86, the second fastening member 86 is installed from one side of the heat sink 4, and the second fastening member 86 is connected to the light source housing 21 after passing through the second through hole 84 of the heat conductive member 5, so that the second fastening member 86 generates a pressure on the heat conductive member 5. The pulling force generated by the first fastening member 83 and the pressing force generated by the second fastening member 86 act on the heat conducting member 5, so that the heat conducting member 5 is more firmly fixed with the light source housing 21, the heat conducting member 5 is ensured to be in close contact with the laser 22, and the heat conducting member 5 is ensured to smoothly guide out the heat on the laser 22.
Compared with the scheme that the heat conducting member 5 and the light source shell 21 are connected by the second fastening member 86, in the scheme that the heat conducting member 5 and the light source shell 21 are connected by the first fastening member 83 and the second fastening member 86, because the first fastening member 83 can be installed from one side of the light source shell 21, when the space between the heat sink 4 and the heat conducting member 5 is small, an avoiding structure does not need to be opened on the heat sink 4 to sacrifice a part of volume to avoid the installation path of the first fastening member 83, so that the heat sink 4 can keep larger volume, and the heat dissipation effect of the heat sink 4 can be improved.
In addition, in the embodiment that the first fastening member 83 and the second fastening member 86 are threaded fastening members, since the second fastening member 86 can be installed from one side of the heat sink 4, the second threaded hole 85 is formed in the side of the light source housing 21 opposite to the heat conducting member 5 to connect with the second fastening member 86, and there is no need to additionally provide an installation structure such as the installation flange 23 and an installation operation space, which is beneficial to reducing the space occupied by the light source housing 21 and meets the design requirement of minimizing the light source housing 21.
In some embodiments, in order to balance the stress on the heat conduction member 5 after the heat conduction member 5 and the light source housing 21 are assembled, as shown in fig. 8, the first threaded hole 81 and the second threaded hole 84 are respectively disposed at two opposite ends of the heat conduction member 5. Thus, after the first fastening member 83 and the second fastening member 86 are mounted, the stress points of the heat conducting member 5 are located at two opposite ends of the heat conducting member 5, so that the stress of the heat conducting member 5 can be kept balanced, and the heat conducting member 5 and the light source housing 21 can be in closer contact, thereby facilitating the heat conduction between the light source housing 21 and the heat conducting member 5.
The first threaded hole 81 and the second through hole 84 may be respectively disposed at the upper end and the lower end of the heat conducting member 5 (as shown in fig. 8), or may be respectively disposed at the two ends of the heat conducting member 5 along the length direction, which may be more practical.
In some embodiments, in order to facilitate the installation of the second fastening member 86, as shown in fig. 8, on the heat-conducting member 5, a gap between one end (a lower end of the heat-conducting member 5 in the drawing) of the second through hole 84 and the heat sink 4 is larger than a gap between one end (an upper end of the heat-conducting member 5 in the drawing) of the first threaded hole 81 and the heat sink 4. By setting the gap between the end of the second through hole 84 and the heat sink 4 to be larger, interference with the heat sink 4 is not easily generated when the second fastening member 86 is installed, and thus, installation of the second fastening member 86 can be facilitated.
In some embodiments, to facilitate the installation of the second fastening member 86, as shown in fig. 8 and 9, the second through hole 84 is located outside the first projected area 54, and the first projected area 54 is a projected area formed on the heat conducting member 5 by the heat sink 4 along the hole depth direction of the second through hole 84 (i.e., an area above the dotted line m in the heat conducting member 5 in the drawing). Through the arrangement, the hole axis of the second through hole 84 is not intersected with the radiator 4, the radiator 4 is located outside the installation path of the second fastening piece 86, so that the interference between the radiator 4 and the installation path of the second fastening piece 86 is avoided, an avoiding structure is not required to be arranged on the radiator 4 to avoid the second fastening piece 86, the design requirement of the maximum size of the radiator 4 is met, and the radiating effect of the radiator 4 can be further improved.
As shown in fig. 2 and 8, the heat conducting member 5 may be disposed obliquely with respect to the bottom surface of the lower case 12, such that the hole axis of the second through hole 84 is disposed obliquely with respect to the bottom surface of the lower case 12, and the second through hole 84 is located outside the first projection area 54.
In some embodiments, as shown in fig. 7 and 8, the number of the first through holes 82, the first threaded holes 81 and the first fastening members 83 is multiple, the multiple first through holes 82 and the multiple first threaded holes 81 are arranged along the first direction Y, and each first fastening member 83 passes through one first through hole 82 to be matched with the corresponding first threaded hole 81. The number of the second through holes 84, the second threaded holes 85 and the second fastening pieces 86 is multiple, the multiple second through holes 84 and the multiple second threaded holes 85 are all arranged along the first direction Y, and each second fastening piece 86 passes through one second through hole 84 to be matched with the corresponding second threaded hole 85.
The heat conduction member 5 is connected to the light source housing 21 by the first fastening members 83 and the second fastening members 86, so that the connection between the heat conduction member 5 and the light source housing 21 is firmer, and the contact between the heat conduction member 5 and the light source housing 21 is tighter, so that heat can be transferred between the light source housing 21 and the heat conduction member 5.
As shown in fig. 7 and 8, the number of the first through holes 82, the first threaded holes 81, the first fastening members 83, the second through holes 84, the second threaded holes 85, and the second fastening members 86 may be three, but is not limited thereto, and may also be two or four, and the like, which may be determined according to actual needs.
In some embodiments, as shown in fig. 9 and 10, fig. 10 is an exploded view of the heat dissipation fan 7, the heat sink 4, the heat conductive member 5, and the first heat pipe 61 of fig. 9. The projection apparatus 100 further includes a connector 9, the connector 9 includes a bottom plate 91 and a first sub-connector 92, and the heat sink 4 is fixed on the bottom plate 91; along the second direction X, the first sub-connector 92 is disposed at an edge of the bottom plate 91 away from the heat conducting member 5, and the heat dissipation fan 7 is fixed on the first sub-connector 92. The radiator fan 7 and the radiator 4 are fixed together by arranging the connecting piece 9, so that the relative fixation of the positions between the radiator fan 7 and the radiator 4 is ensured. Meanwhile, the heat dissipation fan 7 and the heat conducting piece 5 are arranged on two sides of the fin assembly 40 in the thickness direction, so that the layout of the heat dissipation fan 7, the radiator 4 and the heat conducting piece 5 is more compact, and the occupation of the space in the machine shell 1 of the projection device 100 is reduced.
In some embodiments, as shown in fig. 8 and 10, the connecting member 9 further includes a second sub-connecting member 93 disposed on the bottom plate 91, and the second sub-connecting member 93 is located on a side of the heat conducting member 5 away from the first component end surface 42 along the first direction Y and is fixedly connected to the heat conducting member 5, and specifically, the second sub-connecting member 93 may be fixedly connected to the second heat conducting member end surface 52. Because the first heat pipe 61 is connected with the heat conducting member 5 from one side of the heat conducting member 5 along the first direction Y, before the heat conducting member 5 is assembled with the light source 2, the stress of the heat conducting member 5 along the first direction Y is unbalanced, the end where the second heat conducting member end face 52 is located is easy to shake, the second sub-connecting member 93 is fixedly connected with the end of the heat conducting member 5 far away from the first component end face 41, so that the heat conducting member 5 can keep the stress balance along the first direction Y, the end where the second heat conducting member end face 52 is located is prevented from shaking, the first heat pipe 61 can be prevented from deforming, and the heat conducting member 5 is more stable to facilitate the subsequent assembly of the heat conducting member 5 and the light source shell 21.
In some embodiments, in order to better dissipate heat of the fin assembly 40 of the heat sink 4, as shown in fig. 9 and 10, the number of the heat dissipation fans 7 is two, and the two heat dissipation fans 7 are arranged along the first direction Y and are both fixed to the first sub-connecting member 92. By providing two heat radiation fans 7, the contact area of the wind with the fin assembly 40 of the heat sink 4 is increased, so that the heat radiation effect on the fin assembly 40 can be improved.
In some embodiments, as shown in fig. 8, 9 and 10, the number of the first heat sink insertion holes 411 is seven, the seven first heat sink insertion holes 411 are arranged in two rows, the two rows of the first heat sink insertion holes 411 are arranged along the second direction X, four first heat sink insertion holes 411 arranged along the height direction (H direction in fig. 8) of the fin assembly 40 are included in the first row, and three first heat sink insertion holes 411 arranged along the height direction of the fin assembly 40 are included in the second row.
The number of the first heat-conductive-member insertion holes 511 is seven, the seven first heat-conductive-member insertion holes 511 are arranged in two rows, the two rows of the first heat-conductive-member insertion holes 511 are arranged in the thickness direction of the heat conductive member 5, the first row includes four first heat-conductive-member insertion holes 511 arranged in the width direction (M direction in fig. 8 and 10) of the heat conductive member 5, and the second row includes three first heat-conductive-member insertion holes 511 arranged in the width direction of the heat conductive member 5.
The number of the first heat pipes 61 is seven, and a first end of each first heat pipe 61 is inserted into the corresponding first heat sink insertion hole 411, and a second end is inserted into the corresponding first heat-conducting member insertion hole 511.
By providing a plurality of first heat pipes 61 to connect the heat-conducting member 5 and the fin assembly 40, the heat transfer efficiency between the heat-conducting member 5 and the fin assembly 40 can be increased, and the heat dissipation effect of the light source housing 21 can be improved.
Of course, the number of the first heat sink insertion holes 411, the first heat-conducting member insertion holes 511, and the first heat pipes 61 is not limited to seven, and six, eight, etc. may be provided, which is not specifically limited herein; the first heat sink insertion holes 411 are not limited to the above arrangement, and may be determined according to the number of the first heat sink insertion holes 411; the first heat-conduction member insertion holes 511 are not limited to the above arrangement, and may be determined according to the number of the first heat-conduction member insertion holes 511.
As shown in fig. 9 and 10, the first heat pipe 61 is inserted from one end of the fin assembly 40, and in the evaporation section (the portion inserted into the first heat-conducting member insertion hole 511) of the first heat pipe 61, the temperature of the heat transfer medium gradually absorbing heat of the heat-conducting member 5 while flowing in the direction toward the inside of the heat-conducting member 5 gradually increases, and therefore the temperature of the evaporation section of the first heat pipe 61 in the insertion direction gradually increases, and the heat absorbing capacity gradually decreases. Because of the difference in heat absorption capacity at each position of the evaporation section of the first heat pipe 61, the temperature difference between the position of the heat conduction member 5 close to the first heat conduction member end surface 51 and the position far away from the first heat conduction member end surface 51 is large, and the temperature difference at each position of the light source housing 21 in the insertion direction of the first heat pipe 61 is large.
In order to reduce the temperature difference of the light source 2 in the first direction Y, in some embodiments, as shown in fig. 11 to 14, fig. 11 is a schematic diagram of structures of the heat conducting member 5, the heat sink 4, the heat dissipation fan 7 and the light source housing 21 in other embodiments of the present invention, fig. 12 and 13 are schematic diagrams of the components in fig. 11 from different viewing angles, and fig. 14 is an exploded view of the components in fig. 11. In this embodiment, on the basis of the structure shown in fig. 3 to 10, the second assembly end face 42 of the fin assembly 40 is further provided with a second heat sink insertion hole 421, and the second heat conducting member end face 52 is provided with a second heat conducting member insertion hole 521 (as shown in fig. 13); the projection apparatus 100 further includes a second heat pipe 62, and a first end (condensation end) of the second heat pipe 62 is inserted into the second heat sink insertion hole 421, and a second end (evaporation end) is inserted into the second heat-conducting member insertion hole 521.
Of course, in this embodiment, the heat sink 4 may also radiate heat in a liquid cooling manner, in addition to radiating heat in an air cooling manner, specifically, the heat sink 4 is a shell-and-tube heat exchanger, and the first ends of the first heat pipe 61 and the second heat pipe 62 are inserted into a shell of the shell-and-tube heat exchanger.
In this embodiment, since the first heat pipe 61 and the second heat pipe 62 are inserted into the heat conducting member 5 from two opposite ends of the heat conducting member 5, respectively, so that the heat conducting mediums in the evaporation sections of the first heat pipe 61 and the second heat pipe 62 flow from two ends of the heat conducting member 5 to the middle portion, respectively, according to the distribution characteristics of the heat absorbing capacity at different positions on the evaporation sections of the first heat pipe 61 and the second heat pipe 62, that is, the heat absorbing capacity of the evaporation section of the first heat pipe 61 along the direction away from the first heat conducting member end surface 51 is gradually reduced, and the heat absorbing capacity of the evaporation section of the second heat pipe 62 along the direction away from the first heat conducting member end surface 51 is gradually reduced and increased, thereby, the evaporation section of the second heat pipe 62 can compensate the heat absorbing capacity of the evaporation section of the first heat pipe 61, so as to reduce the temperature difference of the heat conducting member 5 in the first direction Y, and reduce the temperature difference of the light source 2 in the first direction Y, thereby making the temperature distribution on the light source 2 more uniform; meanwhile, the first heat pipe 61 and the second heat pipe 62 are respectively inserted into the heat conducting member 5 from two opposite ends of the heat conducting member 5, so that the first heat pipe 61 and the second heat pipe 62 are equivalent to a fixing frame to connect two opposite ends of the heat conducting member 5 with the heat sink 4, so that the heat conducting member 5 keeps stress balance, and the heat sink 4 and the heat conducting member 5 do not need to be additionally provided with a connecting member 9 for fixing the two, thereby simplifying the installation structure of the heat conducting member 5.
The connection between the first heat pipe 61 and the second heat pipe 62 and the heat conducting member 5 is not limited to the connection manner of the insertion holes, other ways of ensuring that the second ends of the first and second heat pipes 61, 62 are connected to the heat conducting member 5 from the opposite sides of the heat conducting portion 53 may be, for example, forming a first and a second groove on the heat conducting member 5, the first heat pipe 61 extending into the first groove from one side of the heat conducting portion 53, the second heat pipe 62 extending into the second groove from the other opposite side of the heat conducting portion 53, in this way, in the extending direction of the first groove, the second heat pipe 62 can compensate the heat absorbing capacity of the first heat pipe 61, therefore, the temperature difference of the heat conducting member 5 in the extending direction of the first groove can be reduced, so as to reduce the temperature difference of the light source 2 in the extending direction of the first groove, and further make the temperature distribution on the light source 2 more uniform.
In some embodiments, as shown in fig. 12, 13 and 14, the heat-conducting member 5 is located between the fin assembly 40 and the light source 2, and along the first direction Y, the first heat-conducting member end surface 51 is located at an end of the heat-conducting member 5 close to the first assembly end surface 41, and the second heat-conducting member end surface 52 is located at an end of the heat-conducting member 5 close to the second assembly end surface 42. By arranging the first heat pipe 61 in this way, the first heat-conducting member insertion hole 511 and the first heat sink insertion hole 411 can be simultaneously inserted from one side of the heat-conducting member 5, and the second heat pipe 62 can be simultaneously inserted into the second heat-conducting member insertion hole 521 and the second heat sink insertion hole 421 from the other opposite side of the heat-conducting member 5, thereby facilitating the installation of the first heat pipe 61 and the second heat pipe 62.
In some embodiments, as shown in fig. 11, the light source 2 further includes a first laser 22a and a second laser 22b disposed on the light source housing 21 and arranged along the first direction Y, wherein a portion of the first laser 22a is located in the light source housing 21, and another portion thereof extends out of the light source housing 21 and contacts the heat conducting portion 53; a part of the second laser 22b is located in the light source housing 21, and another part thereof protrudes outside the light source housing 21 and is in contact with the heat conduction portion 53. The first laser 22a is disposed adjacent the first thermally conductive member end face 51 and the second laser 22b is disposed adjacent the second thermally conductive member end face 52.
In this embodiment, as shown in fig. 11 and 12, since the first heat pipe 61 has a strong heat absorbing capacity at a position close to the first heat-conducting member end surface 51, by disposing the first laser 22a close to the first heat-conducting member end surface 51, the first heat pipe 61 can absorb heat of the first laser 22a well, and the temperature of the first laser 22a is prevented from being too high; since the second heat pipe 62 has a strong heat absorbing capacity at a position close to the second heat conducting member end surface 52, the second heat pipe 62 can absorb heat of the second laser 22b well by disposing the second laser 22b close to the second heat conducting member end surface 52, so as to avoid the temperature of the second laser 22b from being too high. By the above arrangement of the first laser 22a and the second laser 22b, it is better facilitated that the first heat pipe 61 and the second heat pipe 62 absorb heat, so that the difference in temperature between the first laser 22a and the second laser 22b can be greatly reduced.
To better illustrate the small difference in temperature between the first laser 22a and the second laser 22b, a comparative experiment was made below for scheme a and scheme b:
the first heat pipe 61 and the second heat pipe 62 are inserted from the first heat-conducting member end surface 51 and the second heat-conducting member end surface 52 of the heat-conducting member 5, respectively, in the case of the embodiment a, and only the first heat pipe 61 is inserted from the first heat-conducting member end surface 51 in the case of the embodiment b.
The test conditions are as follows: the thermal power of the first laser 22a is 60W and the thermal power of the second laser 22b is 60W. The rotational speed of the radiator fan 7 is 2000 RPM.
The test results are shown in the following table:
| scheme a | Scheme b | |
| Ambient temperature/. degree.C | 25 | 25 |
| |
43.5 | 43.4 |
| |
44 | 45.5 |
| Temperature difference/. degree.C | 0.5 | 2.1 |
And (4) test conclusion: in the case of the scheme a, the temperature difference between the first laser 22a and the second laser 22b is 0.5 ℃, and in the case of the scheme b, the temperature difference between the first laser 22a and the second laser 22b is 2.1 ℃, so that it can be seen that in the case of the scheme a, the temperature difference between the first laser 22a and the second laser 22b can be reduced by inserting the first heat pipe 61 and the second heat pipe 62 from the first heat-conducting member end surface 51 and the second heat-conducting member end surface 52 of the heat-conducting member 5, respectively.
The first laser 22a and the second laser 22b may be disposed in the light source housing 21, besides extending out of the light source housing 21 and contacting the heat conducting portion 53, on the side wall of the light source housing 21 contacting the heat conducting portion 53, so that the first laser 22a and the second laser 22b are indirectly connected to the heat conducting member 5, and the first laser 22a and the second laser 22b transfer heat to the side wall of the light source housing 21 and then to the heat conducting member 5.
In some embodiments, as shown in fig. 7, 11 and 13, the first heat sink insertion hole 411 and the first heat-conducting member insertion hole 511 are through holes, that is, the first heat sink insertion hole 411 penetrates the first component end surface 41 and the second component end surface 42, and the first heat-conducting member insertion hole 511 penetrates the first heat-conducting member end surface 51 and the second heat-conducting member end surface 52. Through the arrangement, the contact area between the first heat pipe 61 and the heat conducting piece 5 and the fin assembly 40 can be increased by controlling the insertion depth of the first heat pipe 61, so that the first heat pipe 61 can transfer more heat from the heat conducting piece 5 to the fin assembly 40, and the heat transfer efficiency of the first heat pipe 61 is improved.
In some embodiments, as shown in fig. 11 and 13, the second heat sink insertion hole 421 and the second heat-conducting member insertion hole 521 are through holes, that is, the second heat sink insertion hole 421 penetrates the first component end surface 41 and the second component end surface 42, and the second heat-conducting member insertion hole 521 penetrates the first heat-conducting member end surface 51 and the second heat-conducting member end surface 52. Through the arrangement, the contact area between the second heat pipe 62 and the heat conducting piece 5 and the fin assembly 40 can be increased by controlling the insertion depth of the second heat pipe 62, so that the second heat pipe 62 can transfer more heat from the heat conducting piece 5 to the fin assembly 40, and the heat transfer efficiency of the second heat pipe 62 is improved.
In some embodiments, as shown in fig. 7 and 11, the first heat pipe 61 is U-shaped. By arranging the first heat pipe 61 in a U shape, that is, bending the first heat pipe 61 twice, the number of times that the heat transfer medium in the first heat pipe 61 turns when flowing between the fin assembly 40 and the heat transfer member 5 can be reduced, so that the obstruction of the heat transfer medium in the first heat pipe 61 is reduced, and the heat transfer medium flows more smoothly between the fin assembly 40 and the heat transfer member 5 along the first heat pipe 61.
In some embodiments, as shown in FIG. 11, the second heat pipe 62 is U-shaped. By arranging the second heat pipe 62 in a U shape, that is, bending the second heat pipe 62 twice, the number of times that the heat transfer medium in the second heat pipe 62 turns when flowing between the fin assembly 40 and the heat transfer member 5 can be reduced, so that the obstruction of the heat transfer medium in the second heat pipe 62 is reduced, and the heat transfer medium flows more smoothly between the fin assembly 40 and the heat transfer member 5 along the second heat pipe 62.
In some embodiments, as shown in fig. 12 and 14, the number of the first heat-conducting member insertion holes 511 is four, and the four first heat-conducting member insertion holes 511 are arranged at intervals in the first arrangement direction M (i.e., the width direction of the heat-conducting member 5) to form a first insertion hole row 54; the number of the second heat-conducting member insertion holes 521 is three, the three second heat-conducting member insertion holes 521 are arranged at intervals along the first arrangement direction M to form a second insertion hole row 55, and the first insertion hole row 54 and the second insertion hole row 55 are arranged at intervals along the second arrangement direction N (i.e., the thickness direction of the heat-conducting member 5, or the arrangement direction of the heat-conducting member 4 and the light source 2).
The number of the first heat sink insertion holes 411 is four, four first heat sink insertion holes 411 are arranged at intervals along the height direction H of the fin assembly 40 to form a third insertion hole row 43, the number of the second heat sink insertion holes 421 is three, three second heat sink insertion holes 421 are arranged at intervals along the height direction H of the fin assembly 40 to form a fourth insertion hole row 44, and the third insertion hole row 43 and the fourth insertion hole row 44 are arranged at intervals along the second direction X.
As shown in fig. 14 and 15, fig. 15 is a schematic arrangement diagram of the first heat pipe 61 in fig. 12. The number of the first heat pipes 61 is four, and a first end of each first heat pipe 61 is inserted into the corresponding first heat sink insertion hole 411, and a second end is inserted into the corresponding first heat-conducting member insertion hole 511.
As shown in fig. 14 and 16, fig. 16 is a schematic view of the arrangement of the second heat pipe 62 in fig. 12. The number of the second heat pipes 62 is three, and a first end of each second heat pipe 62 is inserted into the corresponding second heat sink insertion hole 421, and a second end is inserted into the corresponding second heat-conducting member insertion hole 521.
Because the first jack row 54 and the second jack row 55 are arranged at intervals along the second arrangement direction N, after the first heat pipe 61 and the second heat pipe 62 are inserted into the first heat-conducting member jack 511 and the second heat-conducting member jack 521, the positions of the first heat pipe 61 and the second heat pipe 62 are staggered in layers, so that the problem of reduced heat transfer efficiency caused by contact between the first heat pipe 61 and the second heat pipe 62 can be avoided, and the layout of the first heat-conducting member jack 511 and the second heat-conducting member jack 521 on the heat-conducting member 5 is more compact, so that more first heat pipes 61 and more second heat pipes 62 can be inserted into the heat-conducting member 5 under the same volume, thereby improving the heat dissipation efficiency of the light source 2.
Because the third jack row 43 and the fourth jack row 44 are arranged at intervals along the second direction X, the layout of the first heat sink jacks 411 and the second heat sink jacks 421 on the fin assembly 40 is more compact, and the fin assembly 40 can be inserted into more first heat pipes 61 and second heat pipes 62 in the same volume, so as to improve the heat dissipation efficiency. Of course, the number of the first heat sink insertion holes 411, the first heat-conducting member insertion holes 511, and the first heat pipes 61 is not limited to four, and two, three, five, and the like may be provided, and is not particularly limited herein.
The number of the second heat sink insertion holes 421, the second heat-conducting member insertion holes 521, and the second heat pipes 62 is not limited to three, and two, four, five, etc. may be provided, which is not specifically limited herein.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (9)
1. A projection device, comprising:
a light source;
the optical machine is connected with the light source;
the lens is connected with the optical machine;
a heat sink;
a first heat pipe;
a second heat pipe;
the heat conducting part comprises a heat conducting part, the heat conducting part is contacted with the light source, the heat conducting part comprises a first heat conducting part end surface and a second heat conducting part end surface which are arranged oppositely, and the heat conducting part is positioned between the first heat conducting part end surface and the second heat conducting part end surface;
the first end of the first heat pipe and the first end of the second heat pipe are both connected with the radiator, and the second end of the first heat pipe and the second end of the second heat pipe are respectively connected with the heat conducting piece from two opposite sides of the heat conducting part;
the end face of the first heat conducting part is provided with a first heat conducting part jack, the end face of the second heat conducting part is provided with a second heat conducting part jack, and the first heat conducting part jack and the second heat conducting part jack are through holes penetrating through the end face of the first heat conducting part and the end face of the second heat conducting part;
the second end of the first heat pipe is inserted from one end of the first heat-conducting member insertion hole and extends from the other end, and the second end of the second heat pipe is inserted from one end of the second heat-conducting member insertion hole and extends from the other end.
2. The projection device of claim 1,
the number of the first heat-conducting piece jacks is multiple, and the multiple first heat-conducting piece jacks are distributed at intervals along a first arrangement direction to form a first jack row; the number of the second heat-conducting piece jacks is multiple, and the second heat-conducting piece jacks are distributed at intervals along the first arrangement direction to form a second jack row;
the second jack row and the first jack row are arranged at intervals along a second arrangement direction, the second arrangement direction is the arrangement direction of the heat-conducting pieces and the light sources, and the first arrangement direction is perpendicular to the second arrangement direction;
the number of the first heat pipes is multiple, the first ends of the first heat pipes are connected with the radiator, and the second ends of the first heat pipes are respectively inserted into the first heat-conducting piece jacks in a one-to-one correspondence manner;
the number of the second heat pipes is multiple, the first ends of the second heat pipes are connected with the radiator, and the second ends of the second heat pipes are respectively inserted into the second heat-conducting piece jacks in a one-to-one correspondence mode.
3. The projection device of claim 1,
the light source also comprises a first laser and a second laser which are arranged along a first direction and are both contacted with the heat conducting part, the first laser is arranged close to the end face of the first heat conducting part, and the second laser is arranged close to the end face of the second heat conducting part;
the first direction is the arrangement direction of the end faces of the first heat-conducting piece and the second heat-conducting piece.
4. The projection device of claim 1,
the heat conducting part is a heat conducting surface, and the heat conducting surface is in surface contact with the light source.
5. The projection device of any of claims 1-4,
the radiator comprises a fin assembly, wherein the fin assembly comprises a first assembly end face and a second assembly end face which are arranged along opposite directions; a first radiator jack is formed in the end face of the first assembly, and a second radiator jack is formed in the end face of the second assembly;
the heat conducting piece is positioned between the fin assembly and the light source, and along a first direction, the end face of the first heat conducting piece is positioned at one end of the heat conducting piece close to the end face of the first assembly, and the end face of the second heat conducting piece is positioned at one end of the heat conducting piece close to the end face of the second assembly; the first direction is the arrangement direction of the end faces of the first component and the second component;
the first end of the first heat pipe is inserted into the first heat sink insertion hole, and the first end of the second heat pipe is inserted into the second heat sink insertion hole;
the projection device further comprises a heat dissipation fan, and the fin assembly is located on a flow path of wind generated by the heat dissipation fan.
6. The projection device of claim 5,
the first radiator jack and the second radiator jack are through holes penetrating through the end face of the first component and the end face of the second component.
7. The projection device of claim 5,
the first heat pipe is U-shaped, and/or the second heat pipe is U-shaped.
8. The projection device of claim 5,
and along a second direction, the heat radiation fan is positioned on one side of the fin assembly, which is far away from the heat conducting piece, and the second direction is the arrangement direction of the fin assembly and the light source.
9. A projection system, comprising:
a projection screen;
a projection device according to any one of claims 1 to 8, wherein the lens of the projection device is adapted to project the projection beam onto a projection screen to form a projection image.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011058307.9A CN112180658B (en) | 2020-09-30 | 2020-09-30 | Projection equipment and projection system |
| PCT/CN2021/119592 WO2022068647A1 (en) | 2020-09-30 | 2021-09-22 | Projection device and projection system |
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| CN202011058307.9A CN112180658B (en) | 2020-09-30 | 2020-09-30 | Projection equipment and projection system |
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| CN112180658B true CN112180658B (en) | 2022-04-01 |
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| CN112180658B (en) * | 2020-09-30 | 2022-04-01 | 青岛海信激光显示股份有限公司 | Projection equipment and projection system |
| CN113448156B (en) * | 2021-07-06 | 2023-03-14 | 深圳亮仔光电科技有限公司 | Return air heat transfer system and projector sealing optical machine |
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| CN109283777B (en) * | 2018-11-20 | 2020-06-23 | 威创集团股份有限公司 | Projection equipment and projection system |
| CN210038424U (en) * | 2019-06-19 | 2020-02-07 | 青岛海信激光显示股份有限公司 | Laser light source and laser projection equipment |
| CN112180658B (en) * | 2020-09-30 | 2022-04-01 | 青岛海信激光显示股份有限公司 | Projection equipment and projection system |
| CN112213906B (en) * | 2020-09-30 | 2022-02-01 | 青岛海信激光显示股份有限公司 | Projection equipment and projection system |
-
2020
- 2020-09-30 CN CN202011058307.9A patent/CN112180658B/en active Active
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2021
- 2021-09-22 WO PCT/CN2021/119592 patent/WO2022068647A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08242463A (en) * | 1995-03-06 | 1996-09-17 | Sony Corp | Projector |
| TW201042227A (en) * | 2009-05-19 | 2010-12-01 | Young Optics Inc | Heat dissipating module and projection apparatus |
| CN207249336U (en) * | 2017-09-06 | 2018-04-17 | 深圳市信方达科技发展股份有限公司 | Projecting apparatus with radiator structure |
| CN111596514A (en) * | 2019-02-20 | 2020-08-28 | 青岛海信激光显示股份有限公司 | Laser light source and laser projection equipment |
| CN110632811A (en) * | 2019-09-29 | 2019-12-31 | 深圳市火乐科技发展有限公司 | Projector with a light source |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112180658A (en) | 2021-01-05 |
| WO2022068647A1 (en) | 2022-04-07 |
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