CN215416249U - Light blocking and heat dissipation assembly for projection optical machine, projection optical machine and projector - Google Patents
Light blocking and heat dissipation assembly for projection optical machine, projection optical machine and projector Download PDFInfo
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- CN215416249U CN215416249U CN202121409616.6U CN202121409616U CN215416249U CN 215416249 U CN215416249 U CN 215416249U CN 202121409616 U CN202121409616 U CN 202121409616U CN 215416249 U CN215416249 U CN 215416249U
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Abstract
The utility model provides a light-blocking heat dissipation assembly for a projection optical machine, the projection optical machine and a projector, wherein the light-blocking heat dissipation assembly comprises a heat dissipation piece and a light-blocking piece arranged on the heat dissipation piece, the heat dissipation piece is in a sheet shape, the heat dissipation piece comprises a heat conduction part and a heat dissipation part, and the heat conduction part forms a sunken part relative to the heat dissipation part; the light barrier comprises a mounting part and a shielding part; the mounting part of the light blocking piece is fixedly mounted on the heat conducting part of the heat radiating piece, and the mounting part does not protrude out of the heat radiating part of the heat radiating piece after being mounted in place; the shielding part of the light barrier is vertically connected to one end, far away from the heat dissipation part of the heat dissipation part, of the mounting part, and the shielding part is used for shielding invalid lighting rays in the projection light machine. The utility model provides a small and efficient light blocking and heat dissipating structure, which can realize sufficient heat dissipation and effectively ensure the working reliability of the projector while ensuring the compact and tight structure of the projector.
Description
Technical Field
The utility model relates to the technical field of projection, in particular to a light blocking and heat dissipating assembly for a projection optical machine, the projection optical machine and a projector.
Background
Digital Light Processing (DLP) projection display mode has the characteristics of high brightness, high contrast and high resolution, is combined with a novel LED Light source, can realize miniaturized portable miniature projection, and is popular among more and more users.
DLP projectors reflect light by a Digital Micromirror Device (DMD) according to an externally input signal in a light reflection form including a positive beam in an ON state, a bias beam in an OFF state, and a FLAT-state beam in a FLAT state. In the ON state, the positive light beam is emitted after reaching the lens module along a preset route to complete the projection work, and the positive light beam is effective illumination light in the projector; in the OFF state, it is necessary to adopt corresponding measures to prevent the polarized light beam from exiting after entering the lens module or causing thermal damage to the galvanometer coil in the lens module, which leads to the reduction of the working reliability of the projector and even the significant reduction of the service life, and the polarized light beam is one of the ineffective illumination light rays in the projector.
In consideration of the demand for further miniaturization of the DLP projector, a small-sized light-blocking heat dissipation structure with high heat dissipation efficiency is urgently needed to be provided, so that sufficient heat dissipation is realized while the compact and strict structure of the projector is ensured, and the working reliability of the projector is effectively ensured.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, a main object of the present invention is to provide a light blocking and heat dissipating assembly for a projection optical engine, a projection optical engine and a projector, which can achieve an excellent heat dissipating effect while ensuring a sufficient miniaturization of the projector structure.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
in a first aspect, the utility model provides a light-blocking heat dissipation assembly for a projection light machine, the light-blocking heat dissipation assembly comprises a heat dissipation member and a light-blocking member mounted on the heat dissipation member,
the heat dissipation member is sheet-shaped, and comprises a heat conduction part and a heat dissipation part, wherein the heat conduction part forms a concave part relative to the heat dissipation part;
the light barrier comprises a mounting part and a shielding part;
the mounting part of the light blocking piece is fixedly mounted on the heat conducting part of the heat radiating piece, and the mounting part does not protrude out of the heat radiating part of the heat radiating piece after being mounted in place;
the shielding part of the light barrier is vertically connected to one end, far away from the heat dissipation part of the heat dissipation part, of the mounting part, and the shielding part is used for shielding invalid lighting rays in the projection light machine.
Optionally, one end of the shielding portion of the light barrier, which is far away from the heat dissipation member, includes a first arc segment and a second arc segment; the first arc section is a convex arc, so that a fillet is formed at one end point of one end, far away from the heat radiating piece, of the shielding part of the light blocking piece; the second arc segment is a concave arc, and the concave arc is arranged between an effective illumination light area and an ineffective illumination light area in the projector light machine.
Optionally, the mounting portion of the light blocking member is fixedly mounted to the heat conducting portion of the heat dissipating member through a connecting member and a positioning assembly.
Optionally, the locating component has two sets ofly, is located respectively near the both ends of a diagonal of installation department, every group the locating component is including being located heat conduction portion or reference column on the installation department and with reference column matched with locating hole.
Optionally, one end of the heat dissipation member, which is close to the shielding portion of the light blocking member, includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are higher than the heat dissipation member of the heat dissipation member in the vertical direction, and one end of the mounting portion of the light blocking member, which is close to the shielding portion, is clamped between the first limiting member and the second limiting member; the first limiting piece is a cube with a quadrangular cross section, and one end face of the cube, which is far away from the blocking portion of the light blocking piece, is transited to other areas of the radiating piece through a slope.
Optionally, the heat dissipation member includes a first end far away from the shielding portion of the light blocking member, and further includes a second end close to the shielding portion of the light blocking member, and a length of the first end is greater than a length of the second end.
Optionally, the heat dissipation portion of the heat dissipation member includes heat dissipation fins, the heat conduction portion includes a heat conduction convex member, and the heat conduction convex member coincides with at least a partial projection of the shielding portion.
In a second aspect, the present invention provides a projection optical machine, which includes a lens module and a light beam adjusting module, where the light beam adjusting module includes a prism assembly;
the projection optical machine comprises an optical machine bottom shell, the bottom shell is provided with a lens group cavity used for installing the light beam adjusting module, and a lens flange used for installing the lens module is connected outside the side wall of the lens group cavity;
the projection optical machine comprises the light blocking and heat dissipating assembly; the heat dissipation part of the light blocking heat dissipation assembly is arranged on the outer side of the bottom surface of the bottom shell, and the shielding part of the light blocking heat dissipation assembly extends into the space between the prism assembly and the lens flange and is used for shielding invalid illumination light rays in the projector.
Optionally, the heat dissipation portion of the heat dissipation member includes heat dissipation fins, the heat conduction portion includes a heat conduction convex member, the heat conduction convex member coincides with at least a partial projection of the shielding portion, the heat conduction convex member extends into a space between the prism assembly and the lens flange, and the heat conduction convex member surrounds a partial edge of the prism assembly.
In a third aspect, the present invention provides a projector, which includes a main chassis and the optical projector as described above, where the optical projector is installed in the main chassis.
According to the light-blocking radiating assembly, the light-blocking piece is mounted on the sheet radiating piece, the height of the light-blocking piece after being mounted in place does not protrude out of the highest plane of the radiating piece, and the shielding part in the light-blocking piece is arranged to be perpendicular to other parts of the light-blocking radiating assembly, so that the light-blocking radiating assembly with simple structural form, large radiating plane and integral miniaturization triple effects is obtained, and is particularly suitable for a miniaturized projection optical machine; the light blocking and heat dissipating assembly shields invalid illumination light rays in the projector through the shielding part, can prevent the invalid illumination light rays from being injected into heat-intolerant high-precision elements, prevents the elements from being thermally damaged, is beneficial to keeping good projection effect, and effectively ensures the working reliability of the projector.
Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.
Drawings
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a schematic top perspective view of a light-blocking heat dissipation assembly according to a preferred embodiment of the present invention;
fig. 2 is a schematic bottom perspective view of a light-blocking heat dissipating assembly according to a preferred embodiment of the present invention;
fig. 3 is an exploded view of a preferred embodiment of the light-blocking heat dissipation assembly of the present invention;
FIG. 4 is a schematic perspective view of a preferred embodiment of a projection optical machine according to the present invention;
FIG. 5 is an exploded view of a preferred embodiment of a projection light engine provided in accordance with the present invention;
FIG. 6 is a cross-sectional view of a preferred embodiment of a projection light engine provided in accordance with the present invention;
fig. 7 is a schematic bottom perspective view of a preferred embodiment of the optical projector according to the present invention, with a lens module and a DMD module removed.
In the figure:
10. a light blocking and heat dissipating component; 110. a heat sink; 111. a heat conducting portion; 112. a heat dissipating section; 113. a heat conductive projection; 1111. a positioning column; 1112. a first limit post; 1113. a second limit post; 114. a first end; 115. a second end; 120. a light blocking member; 121. an installation part; 122. a shielding portion; 1211. positioning holes; 1221. a first arc segment; 1222. a second arc segment; 20. a lens module; 30. a light beam adjusting module; 310. a prism assembly; 40. a bottom case; 410. a lens group cavity; 420. a lens flange; 50. a DMD module.
Detailed Description
The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the nature of the present invention, well-known methods, procedures, and components have not been described in detail.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The utility model provides a light-blocking heat dissipation assembly for a projection light machine, as shown in fig. 1-fig. 3, the light-blocking heat dissipation assembly 10 includes a heat dissipation member 110 and a light-blocking member 120 mounted on the heat dissipation member 110;
the heat dissipation member 110 is sheet-shaped, the heat dissipation member 110 includes a heat conduction portion 111 and a heat dissipation portion 112, and the heat conduction portion 111 forms a recess with respect to the heat dissipation portion 112;
the light blocking member 120 includes a mounting portion 121 and a shielding portion 122;
the mounting portion 121 of the light blocking member 120 is fixedly mounted on the heat conducting portion 111 of the heat dissipating member 110, and the mounting portion 121 does not protrude from the heat dissipating portion 112 of the heat dissipating member 110 after being mounted in place;
the shielding portion 122 of the light barrier 120 is vertically connected to one end of the mounting portion 121 away from the heat dissipation portion 112 of the heat dissipation member 110, and the shielding portion 122 is used for shielding ineffective illumination light rays in the projector.
The utility model sets a heat conduction part 111 which is a concave part corresponding to the heat dissipation part 112 on the sheet-shaped heat dissipation part 110, so that the light blocking part 120 is installed into the heat conduction part 111 through the installation part 121, and the height of the light blocking part 120 after being installed in place does not protrude out of the highest plane of the heat dissipation part 110; and set up shielding part 122 perpendicular to other parts of the heat radiation component that blocks light in the light piece 120, shielding part 122 is because the heat that shelters from light and produces, through installation department 121 transmit to heat conduction portion 111 of heat radiation piece 110, then transmitted to on the heat radiation piece 110 again, through the flaky heat radiation part of large tracts of land with heat to the external conduction away, from this, obtained the heat radiation component that blocks light that simple, big radiating plane of structural style and whole miniaturized triple effect have concurrently, the specially adapted miniaturized projection ray apparatus. Meanwhile, the shielding part 122 is arranged in a manner that the structural strength of the light blocking and heat dissipating assembly can be enhanced.
The light blocking and heat dissipating assembly shields invalid illumination light rays in the projector through the shielding part 122, specifically, the shielded invalid illumination light rays can be polarized light beams emitted by a DMD assembly in the DLP projector under an OFF state, and the shielding part 122 prevents the invalid illumination light rays from being emitted into heat-labile high-precision elements (such as a galvanometer assembly) of a projection light machine, so that the elements are prevented from being thermally damaged, a good projection effect is favorably kept, and the working reliability of the projector is effectively guaranteed; the shielding portion 122 can also prevent invalid illumination light from entering the projection lens in the projector, which affects the imaging quality of the lens.
Optionally, one end of the shielding portion 122 of the light barrier 120 away from the heat sink 110 includes a first circular arc segment 1221 and a second circular arc segment 1222; the first arc segment 1221 is a convex arc, so that a fillet is formed at an end point of one end of the shielding portion 122 of the light barrier 120 away from the heat sink 110; the second arc segment 1222 is a concave arc between the active illumination ray area and the inactive illumination ray area within the projector light.
Specifically, the first arc segment 1221 is configured as a convex arc, so that when the light-blocking and heat-dissipating component is inserted into a predetermined position of the projector engine, other components adjacent to the light-blocking and heat-dissipating component inside the projector engine will not be adversely affected, for example, if the light-blocking and heat-dissipating component is not in the form of a convex arc but in the form of a right angle, the right angle may be squeezed or scratched to the components adjacent to the light-blocking and heat-dissipating component inside the engine, which may cause undesirable damage to these components or even affect their working performance.
The second arc segment 1222 is a concave arc to prevent the shielding portion 122 from shielding the positive light beam emitted from the DMD assembly in the ON state. The second arc segment is set to be a concave arc, and the specific shape of the concave arc can make the cross-sectional contour lines of the concave arc and the positive beam ON the plane of the shielding part 122 coincide as much as possible after the light blocking member 120 is installed in place, so that the shielding part 122 shields the bias beam emitted when the DMD component in the DLP projector is in the OFF state as much as possible, and can shield the positive beam emitted when the DMD component is in the ON state as little as possible. As will be appreciated by those skilled in the art, the above-mentioned "cross-sectional profile of the plane of shield 122 for a positive beam" means that the area of the positive beam is located on the cross-sectional profile of the plane of shield 122, since a positive beam inevitably also includes a small amount of marginal rays away from the central main beam area.
Alternatively, the mounting portion 121 of the light blocking member 120 is fixedly mounted to the heat conduction portion 111 of the heat sink 110 through a connector and a positioning member.
Specifically, the mounting portion 121 of the light blocking member 120 may be fixed on the heat conduction portion 111 of the heat dissipation member 110 by a connector (e.g., a bolt connection member); the mounting position of the mounting portion can be made accurate by the positioning assembly, so that the position of the shielding portion 122 of the light blocking member 120 is ensured to be accurate, thereby sufficiently ensuring the light blocking effect.
Optionally, there are two sets of positioning components, which are respectively located near two ends of a diagonal line of the installation portion 121, and each set of positioning component includes a positioning column 1111 located on the heat conduction portion 111 or the installation portion 121 and a positioning hole 1211 matched with the positioning column 1111.
Two groups of positioning components are arranged at two ends of one diagonal line of the mounting part 121, so that the light blocking part mounting part 121 is restrained at a full angle in a plane where the light blocking part mounting part is located, displacement can not occur, and the positioning effect on the light blocking part 120 is further improved. The positioning assembly is selected to be in a form that the positioning column 1111 and the positioning hole 1211 are matched with each other, so that the structure is simple, and the manufacturing is easy.
One end of the heat dissipation member 110 close to the shielding portion 122 of the light blocking member 120 includes a first limiting member 1112 and a second limiting member 1113, the height of the first limiting member 1112 and the second limiting member 1113 in the vertical direction is higher than the height of the heat dissipation member 112 of the heat dissipation member 110, and one end of the mounting portion 121 of the light blocking member 120 close to the shielding portion 122 is clamped between the first limiting member 1112 and the second limiting member 1113; the first limiting member 1112 is a cube having a quadrangular cross section, and one end surface of the cube, which is far away from the blocking portion 122 of the light blocking member 120, transitions to the other region of the heat dissipation member 110 through a slope.
Through the arrangement of the first limiting member 1112 and the second limiting member 1113, the light blocking member 120 can be primarily limited, after the end of the mounting portion 121 of the light blocking member 120 close to the shielding portion 122 is clamped into the two limiting members, the light blocking member 120 is roughly positioned, and then the light blocking member 120 can be further precisely positioned through the connecting member and the positioning assembly. The first limiting member 1112 is formed in a rectangular cross-sectional cubic structure, and one end surface of the cubic structure, which is away from the blocking portion 122 of the light blocking member 120, is made to transition to another region of the heat dissipation member 110 through a slope, so that the structural strength of the first limiting member 1112 is enhanced by the slope, and the first limiting member 1112 is not easily deformed relative to the other region of the heat dissipation member 110.
Optionally, the heat dissipation member 110 includes a first end 114 close to the shielding portion 122 of the light blocking member 120, and further includes a second end 115 far away from the shielding portion 122 of the light blocking member 120, and a right-angle notch is formed at one corner of the second end 115.
Specifically, referring to fig. 3, when the heat dissipation element of the light blocking heat dissipation assembly is used as a part of the housing of the projection optical engine, a space is reserved by the right-angle notch disposed at one corner of the second end 115, and the heat dissipation requirement is met while other components are disposed on the housing of the optical engine.
Optionally, the heat dissipating portion 112 of the heat dissipating member 110 includes heat dissipating fins, the heat conducting portion 111 includes a heat conducting convex member 113, and the projection of the heat conducting convex member 113 and the shielding portion 122 at least partially coincide with each other.
The heat-conducting convex part 113 may be a block structure, a plate structure, etc., and the heat-conducting convex part 113 extends into the projector to transmit heat generated by the projection of the ineffective illumination light rays in the projector, especially heat generated by the polarized light beams when the DMD module in the DLP projector is in the OFF state, as far as possible, so as to reduce the influence on high-precision components in the projector and the whole projection quality.
Further, in the projection direction of the lens module 20, the heat-conducting convex part 113 and the shielding part 122 overlap at least in part, so that the heat-conducting convex part 113 can block the polarized light beam of the DMD module in the OFF state for one time, and conduct heat away at the same time, and the part of the light beam of the DMD module in the OFF state, which is not absorbed by the heat-conducting convex part, is blocked for the second time by the shielding part 122, thereby further improving the shielding effect on the polarized light beam and other ineffective light beams generated by the DMD module in the OFF state, and simultaneously improving the conduction rate of generating heat for the light beams, thereby improving the heat dissipation efficiency and fully ensuring the projection effect of the projection light machine.
In a second aspect, the present invention further provides a projection optical machine, as shown in fig. 4 to fig. 7, the projection optical machine includes a lens module 20 and a beam adjustment module 30, where the beam adjustment module 30 includes a prism assembly 310;
the projection optical machine comprises an optical machine bottom shell 40, wherein the bottom shell 40 is provided with a mirror group cavity 410 for installing the light beam adjusting module 30, and a lens flange 420 for installing the lens module 20 is connected outside the side wall of the mirror group cavity 410;
the projection optical machine comprises the light blocking and heat dissipating assembly; the heat dissipation member 110 of the light blocking heat dissipation assembly is mounted on the outer side of the bottom surface of the bottom case 40, and the blocking portion 122 of the light blocking member 120 of the light blocking heat dissipation assembly extends between the prism assembly 310 and the lens flange 420 for blocking the ineffective illumination light in the projector.
Specifically, in one embodiment, the projector engine may be a DLP projector engine, which may further include a DMD module 50 and a light source assembly, and the beam adjustment module may include a fly-eye lens, a relay lens assembly and a prism assembly 310 arranged in sequence. Light emitted by the light source component sequentially passes through a fly-eye lens, a relay lens component and a prism component 310 in the light beam adjusting module 30 and then enters the DMD module 50, the DMD module reflects the light, when the DMD module 50 is in an ON state, a positive light beam is obtained through reflection, and the positive light beam is emitted after passing through the prism component 310 and enters a preset light emitting channel of the lens module 20, so that projection work is completed; when the DMD module 50 is in the OFF state, the polarized light beam is reflected and exits through the prism assembly 310 and does not enter the predetermined light exit channel of the lens module 20, and in the absence of the light blocking and heat dissipating assembly, the polarized light beam enters the polarizer assembly in the lens module, and the polarized light beam entering the polarizer assembly causes the temperature rise of the polarizer coil, even causes thermal damage to the coil, and affects the projection quality, even causes the projection optical machine to work abnormally, but in the present invention, the shielding portion 122 of the light blocking member 120 in the light blocking and heat dissipating assembly is inserted between the prism assembly 310 and the lens flange 420, so that the ineffective illumination light beam of the polarized light beam can be effectively shielded, and the polarized light beam can be prevented from entering the polarizer assembly in the lens module 20 as much as possible.
Optionally, the heat dissipating portion 112 of the heat dissipating member 110 includes heat dissipating fins, the heat conducting portion 111 includes a heat conducting convex member 113, the heat conducting convex member 113 is overlapped with the shielding portion 122 at least partially, the heat conducting convex member 113 extends into between the prism assembly 310 and the lens flange 420, and the heat conducting convex member 113 surrounds part of the edge of the prism assembly 310.
As described above, the heat-conducting protrusion 113 protrudes into the projector, and can conduct heat generated by the projection of the ineffective illumination light in the projector, especially heat generated by the deflected light beam when the DMD module in the DLP projector is in the OFF state, as far as possible; in the projection direction of the lens module 20, the heat-conducting convex member 113 and the shielding portion 122 are at least partially projected and overlapped, so that the polarized beam of the DMD module in the OFF state can be blocked once by the heat-conducting convex member 113, and the part of the polarized beam of the DMD module in the OFF state, which is not absorbed by the heat-conducting convex member 113, is blocked twice by the shielding portion 122.
Further, the convex part 113 of conducting heat encircles the partial edge of the prism assembly 310, specifically, the convex part 113 of conducting heat has a concave surface, and the prism assembly 310 is partially located in the concave surface, so, can play the better effect of sheltering from to the invalid light, the setting of concave surface also can increase the area of the convex part 113 of conducting heat, improves the radiating efficiency.
In a third aspect, the present invention further provides a projector, which includes a main chassis and the optical projector as described above, where the optical projector is installed in the main chassis.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the utility model.
Claims (10)
1. A heat dissipation assembly that is used for being in light of projection ray apparatus, heat dissipation assembly (10) that is in light include heat dissipation piece (110) and install in light barrier (120) on heat dissipation piece (110), its characterized in that:
the heat dissipation member (110) is sheet-shaped, the heat dissipation member (110) comprises a heat conduction part (111) and a heat dissipation part (112), and the heat conduction part (111) forms a concave part relative to the heat dissipation part (112);
the light blocking member (120) includes a mounting portion (121) and a shielding portion (122);
the mounting part (121) of the light blocking piece (120) is fixedly mounted on the heat conduction part (111) of the heat dissipation piece (110), and the mounting part (121) does not protrude out of the heat dissipation part (112) of the heat dissipation piece (110) after being mounted in place;
the shielding part (122) of the light barrier (120) is vertically connected to one end, away from the heat dissipation part (112) of the heat dissipation part (110), of the installation part (121), and the shielding part (122) is used for shielding invalid illumination light rays in the projector.
2. A light-blocking and heat-dissipating assembly according to claim 1, characterized in that the end of the blocking portion (122) of the light-blocking member (120) remote from the heat-dissipating member (110) comprises a first circular arc segment (1221) and a second circular arc segment (1222); the first arc section (1221) is a convex arc, so that a fillet is formed at one end point of one end, away from the heat sink (110), of the shielding part (122) of the light barrier (120); the second arc segment (1222) is a concave arc between active and inactive illumination light areas within the projector light.
3. The light-blocking heat dissipating assembly according to claim 1, wherein the mounting portion (121) of the light-blocking member (120) is fixedly mounted to the heat conducting portion (111) of the heat dissipating member (110) by a connector and a positioning assembly.
4. Light blocking and heat dissipating assembly according to claim 3, wherein there are two sets of positioning assemblies respectively located near two ends of a diagonal line of the mounting portion (121), each set of positioning assembly comprises a positioning post (1111) located on the heat conducting portion (111) or the mounting portion (121) and a positioning hole (1211) matched with the positioning post (1111).
5. The light-blocking and heat-dissipating assembly according to claim 1, wherein one end of the heat dissipating member (110) close to the shielding portion (122) of the light-blocking member (120) comprises a first limiting member (1112) and a second limiting member (1113), the height of the first limiting member (1112) and the second limiting member (1113) in the vertical direction is higher than the height of the heat dissipating member (112) of the heat dissipating member (110), and one end of the mounting portion (121) of the light-blocking member (120) close to the shielding portion (122) is clamped between the first limiting member (1112) and the second limiting member (1113); the first limiting part (1112) is a cuboid with a quadrangular cross section, and one end face of the cuboid, which is far away from the shielding part (122) of the light blocking part (120), is transited to other regions of the heat dissipation part (110) through a slope.
6. A light-blocking heat sink assembly according to claim 1, wherein the heat sink (110) comprises a first end (114) proximate to the blocking portion (122) of the light-blocking member (120) and further comprises a second end (115) distal from the blocking portion (122) of the light-blocking member (120), a right-angled cut-out being provided at one corner of the second end (115).
7. Light-blocking heat dissipation assembly according to claim 1, characterized in that the heat dissipation part (112) of the heat dissipation member (110) comprises heat dissipation fins, the heat conduction part (111) comprises heat conductive protrusions (113), the heat conductive protrusions (113) coinciding with at least partial projections of the shielding parts (122).
8. A light engine comprising a lens module (20) and a beam adjustment module (30), the beam adjustment module (30) comprising a prism assembly; it is characterized in that the preparation method is characterized in that,
the projection optical machine comprises an optical machine bottom shell (40), the bottom shell (40) is provided with a lens group cavity (410) used for installing the light beam adjusting module (30), and a lens flange (420) used for installing the lens module (20) is connected to the outer side wall of the lens group cavity (410);
the projection light engine comprises a light-blocking heat dissipation assembly (10) according to any one of claims 1 to 7; the heat dissipation member (110) of the light blocking and heat dissipating assembly (10) is mounted on the outer side of the bottom surface of the bottom shell (40), and the shielding part (122) of the light blocking member (120) of the light blocking and heat dissipating assembly extends into the space between the prism assembly (310) and the lens flange (420) and is used for shielding invalid illumination rays in the projector.
9. The light engine of claim 8, wherein the heat dissipating part (112) of the heat dissipating member (110) comprises heat dissipating fins, the heat conducting part (111) comprises a heat conducting convex member (113), the heat conducting convex member (113) is overlapped with the shielding part (122) at least partially, the heat conducting convex member (113) extends into between the prism assembly (310) and the lens flange (420), and the heat conducting convex member (113) surrounds part of the edge of the prism assembly (310).
10. A projector comprising a main chassis and the light engine of claim 8 or 9, wherein the light engine is mounted to the main chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121409616.6U CN215416249U (en) | 2021-06-23 | 2021-06-23 | Light blocking and heat dissipation assembly for projection optical machine, projection optical machine and projector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121409616.6U CN215416249U (en) | 2021-06-23 | 2021-06-23 | Light blocking and heat dissipation assembly for projection optical machine, projection optical machine and projector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114675476A (en) * | 2022-02-25 | 2022-06-28 | 歌尔光学科技有限公司 | Optical machine board and projection optical machine |
| CN114675475A (en) * | 2022-02-25 | 2022-06-28 | 歌尔光学科技有限公司 | Optical machine plate and projection optical machine |
| WO2023231103A1 (en) * | 2022-05-30 | 2023-12-07 | 歌尔光学科技有限公司 | Projection optical engine |
| CN114675475B (en) * | 2022-02-25 | 2024-05-14 | 歌尔光学科技有限公司 | Optical board and projection optical machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114675476A (en) * | 2022-02-25 | 2022-06-28 | 歌尔光学科技有限公司 | Optical machine board and projection optical machine |
| CN114675475A (en) * | 2022-02-25 | 2022-06-28 | 歌尔光学科技有限公司 | Optical machine plate and projection optical machine |
| WO2023159818A1 (en) * | 2022-02-25 | 2023-08-31 | 歌尔光学科技有限公司 | Optical engine plate and optical projector engine |
| CN114675475B (en) * | 2022-02-25 | 2024-05-14 | 歌尔光学科技有限公司 | Optical board and projection optical machine |
| WO2023231103A1 (en) * | 2022-05-30 | 2023-12-07 | 歌尔光学科技有限公司 | Projection optical engine |
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Address after: 518067 3C, 3D, Block CD, Building 7, Xinghua Industrial Building, No. 4, Industrial 6th Road, Huaguoshan Community, Merchants Street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen Anhua Photoelectric Technology Co.,Ltd. Address before: 2101-2105, block a, building 8, Shenzhen International Innovation Valley, Dashi 1st Road, Xili community, Xili street, Nanshan District, Shenzhen City, Guangdong Province, 518055 Patentee before: SHENZHEN ANHUA OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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