CN111338164B - Can hide projection arrangement from taking heat dissipation mechanism in wall body installation - Google Patents
Can hide projection arrangement from taking heat dissipation mechanism in wall body installation Download PDFInfo
- Publication number
- CN111338164B CN111338164B CN202010190458.3A CN202010190458A CN111338164B CN 111338164 B CN111338164 B CN 111338164B CN 202010190458 A CN202010190458 A CN 202010190458A CN 111338164 B CN111338164 B CN 111338164B
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- Prior art keywords
- heat dissipation
- wall body
- projector
- hidden
- mounting box
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- 230000017525 heat dissipation Effects 0.000 title claims abstract description 81
- 238000009434 installation Methods 0.000 title claims description 6
- 238000005192 partition Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims 3
- 241001330002 Bambuseae Species 0.000 claims 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 3
- 239000011425 bamboo Substances 0.000 claims 3
- 241000883990 Flabellum Species 0.000 claims 2
- 238000003466 welding Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/041—Allowing quick release of the apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
-
- 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
- G03B21/54—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The invention discloses a projection device with a heat dissipation mechanism and capable of being hidden in a wall body, which comprises the wall body, wherein a hidden groove is formed in the wall body, a mounting box is fixedly mounted in the hidden groove, a projector is inserted in the mounting box, side heat dissipation boxes are fixed on two sides of the projector, a heat dissipation channel is formed in the side heat dissipation box on the other side, and a heat dissipation unit is mounted on a positioning plate at the front end of the side heat dissipation box; the projector can be hidden and installed in the wall body without using a projector bracket, so that the projector is prevented from being easily collided and toppled, and the problems that the projector is easily polluted by dust when exposed to an external heat dissipation port and the bracket occupies a large area are well solved; meanwhile, the side heat dissipation boxes are respectively arranged on the two sides of the projector to form the air inlet channel and the heat dissipation channel, and the air inlet fan unit and the heat dissipation unit work simultaneously to realize the heat dissipation function of the projector hidden in the wall body, and the heat dissipation effect is good.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a projection device with a heat dissipation mechanism, which can be hidden in a wall body for installation.
Background
The projector is an optical instrument which utilizes an optical element to amplify the profile of a workpiece and projects the workpiece onto a screen, can be used for measuring the profile by using transmitted light and also can be used for measuring the surface shape of a non-through hole and observing the surface of the part by using reflected light, is particularly suitable for measuring complex profiles and small workpieces such as clock parts, stamping parts, electronic elements, templates, dies, threads, gears, forming cutters and the like, and has high inspection efficiency and convenient use; the method is widely applied to measuring rooms and production workshops, and is particularly suitable for meeting occasions in the instrument and meter and clock industries.
Most of the existing projectors are installed and fixed on a projector support, the projector support occupies a large area and is easy to collide and collapse, and the projector is exposed outside and is easy to be polluted by more dust to block a heat dissipation opening; therefore, the projection device with the heat dissipation mechanism capable of being hidden in a wall body is provided.
Disclosure of Invention
The present invention is directed to a projector with a heat dissipation mechanism, which can be hidden in a wall, to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a projection device with a heat dissipation mechanism and capable of being hidden in a wall body comprises the wall body, wherein a hidden groove is formed in the wall body, a mounting box is fixedly mounted in the hidden groove, the opening side of the mounting box faces outwards, U-shaped plates are welded at two ends of the opening side of the mounting box, the U-shaped plates are attached to the outer side of the wall body, a projector is inserted in the mounting box, side heat dissipation boxes are fixed to two sides of the projector, one side, attached to the projector, of each side heat dissipation box and the front side of the projector are of an open structure, a mounting plate is fixed to the front side of each side heat dissipation box through screws, positioning plates are welded to the side edges of the mounting plates, the positioning plates and the corresponding U-shaped plates are fixedly connected through a plurality of self-locking screws, an air inlet channel is arranged inside each side heat dissipation box at one side, an air inlet fan group is mounted on each positioning plate at the front end of each side heat dissipation box, and a heat dissipation channel is arranged inside each side heat dissipation box at the other side, the side heat dissipation box is characterized in that a heat dissipation unit is mounted on a positioning plate at the front end of the side heat dissipation box, the air inlet unit and the heat dissipation unit are communicated with the outside, a disk-shaped cold liquid pipe is fixed in the air inlet channel, the air inlet channel is communicated with an air inlet at one side of the projector, and the heat dissipation unit is communicated with a heat dissipation port at the other side of the projector.
Preferably, the mounting box and the hidden groove are both set to be rectangular structures, two pre-buried screws are pre-buried on the rear groove wall of the hidden groove, screw through holes corresponding to the positions of the pre-buried screws are formed in the rear side of the mounting box, and the pre-buried screws penetrate through the corresponding screw through holes and are locked inside the mounting box through locking nuts.
Preferably, the back ends of the two inner sides of the mounting box are welded with the butt straps, the partition plate is placed on the back side of the inner part of the mounting box, the two sides of the partition plate are respectively attached to the two butt straps, and the partition plate and the butt straps are fixedly connected through the positioning bolts.
Preferably, the air inlet unit and the heat dissipation unit all comprise net cylinders welded on the rear sides of the mounting plates, driving motors are arranged in the net cylinders and are all fixed on the inner walls of the net cylinders through a plurality of connecting rods, round holes are formed in the middle of the mounting plates, fan blades are arranged in the round holes and are all fixedly connected with output shafts of the driving motors, and the front sides of the round holes are all fixed with separation nets through fixing bolts.
Preferably, U type opening has all been seted up to self-locking screw's head end, the both ends of U type opening all set up to detain the position piece, detain the position piece and all set up to semicircle form, and detain the outside of position piece and be smooth arcwall face, the inside of detaining the position piece all is provided with reset rubber.
Preferably, bolt through holes are formed in the positioning plate, step holes corresponding to the bolt through holes are formed in the front side of the U-shaped plate, and the head ends of the self-locking screws penetrate through the bolt through holes and are clamped and embedded in the corresponding step holes to be fixed.
Compared with the prior art, the invention has the beneficial effects that: the projector is reasonable in structural design, can be hidden and mounted in a wall body, and does not need a projector bracket, so that the projector is prevented from being easily collided and toppled, and the problems that the projector is easily polluted by dust when exposed to an external heat dissipation port and the bracket occupies a large area are well solved; meanwhile, the side heat dissipation boxes are respectively arranged on the two sides of the projector to form the air inlet channel and the heat dissipation channel, the air inlet fan unit and the heat dissipation unit work simultaneously to achieve the heat dissipation function that the projector is hidden in the wall body, the heat dissipation effect is good, the practicability is high, and the popularization is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the mounting box of the present invention;
FIG. 3 is a schematic view of the air inlet channel and the heat sink channel of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 3 according to the present invention;
FIG. 5 is a schematic view of a hidden slot in the present invention;
FIG. 6 is an enlarged view of the structure at B in FIG. 5 according to the present invention;
fig. 7 is a schematic view of the self-locking screw of the present invention.
In the figure: the heat dissipation device comprises a wall body 1, a hidden groove 2, a mounting box 3, a projector 4, a side heat dissipation box 5, a mounting plate 6, an air inlet unit 7, a heat dissipation unit 8, a positioning plate 9, a U-shaped plate 10, a stepped hole 1001, a self-locking screw 11, a U-shaped opening 1101, a buckling block 1102, an air inlet channel 12, a heat dissipation channel 13, a disk-shaped cold liquid pipe 14, a driving motor 15, a net cylinder 16, a connecting rod 17, fan blades 18, a separation net 19, a screw through hole 20, a pre-embedded screw 21, a locking nut 22, a butt strap 23, a positioning bolt 24 and a partition plate 25.
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.
Referring to fig. 1-7, the present invention provides a technical solution: a projection device with a heat dissipation mechanism and capable of being hidden in wall installation comprises a wall 1, a hidden groove 2 is formed in the wall 1, a mounting box 3 is fixedly mounted in the hidden groove 2, the mounting box 3 and the hidden groove 2 are both arranged to be of a rectangular structure, two embedded screws 21 are embedded in the rear groove wall of the hidden groove 2, screw through holes 20 corresponding to the embedded screws 21 are formed in the rear side of the mounting box 3, the embedded screws 21 penetrate through the corresponding screw through holes 20 and are locked inside the mounting box 3 through locking nuts 22, butt plates 23 are welded at the rear ends of the two inner sides of the mounting box 3, a partition plate 25 is placed at the rear side of the inside of the mounting box 3, the two sides of the partition plate 25 are respectively attached to the two butt plates 23, and the partition plate 25 and the butt plates 23 are fixedly connected through positioning bolts 24;
the opening side of the mounting box 3 faces outwards, the two ends of the opening side are welded with U-shaped plates 10, the U-shaped plates 10 are attached to the outer side of the wall body 1, a projector 4 is inserted into the mounting box 3, the two sides of the projector 4 are fixed with side heat dissipation boxes 5, one side of the side heat dissipation boxes 5 attached to the projector 4 and the front side are both of an open structure, the front side of each side heat dissipation box 5 is fixed with a mounting plate 6 through screws, the side of each mounting plate 6 is welded with a positioning plate 9, the positioning plates 9 and the corresponding U-shaped plates 10 are connected and fixed through a plurality of self-locking screws 11, the head ends of the self-locking screws 11 are both provided with U-shaped notches 1101, the two ends of each U-shaped notch 1101 are both provided with buckling blocks 1102, the buckling blocks 1102 are both semicircular, the outer sides of the buckling blocks 1102 are both smooth arc-shaped surfaces, reset rubber is arranged inside each buckling block 1102, the positioning plates 9 are both provided with bolt through holes, the front sides of the U-shaped plates 10 are both provided with step holes 1001 corresponding to the bolt through holes, the head ends of the self-locking screws 11 penetrate through the bolt through holes and are fixedly clamped in the corresponding stepped holes 1001, the projector 4 is fixed in the mounting box 3 through the self-locking screws 11, mounting and dismounting can be conveniently carried out, when the self-locking screws 11 are dismounted, only the head ends of the self-locking screws 11 need to be pinched to enable the self-locking screws 11 to be separated from the stepped holes 1001, and the mounting and dismounting are very convenient;
an air inlet channel 12 is arranged inside the side heat dissipation box 5 at one side, an air inlet fan unit 7 is arranged on a positioning plate 9 at the front end of the side heat dissipation box 5, a heat dissipation channel 13 is arranged inside the side heat dissipation box 5 at the other side, a heat dissipation unit 8 is arranged on the positioning plate 9 at the front end of the side heat dissipation box 5, the air inlet fan unit 7 and the heat dissipation unit 8 are both communicated with the outside, a disk-shaped cold liquid pipe 14 is fixed in the air inlet channel 12, the air inlet channel 12 is communicated with an air inlet at one side of the projector 4, the heat dissipation unit 8 is communicated with a heat dissipation port at the other side of the projector 4, the air inlet fan unit 7 and the heat dissipation unit 8 both comprise net cylinders 16 welded at the rear side of the mounting plate 6, driving motors 15 are arranged in the net cylinders 16, the driving motors 15 are all fixed on the inner walls of the net cylinders 16 through a plurality of connecting rods 17, circular holes are all formed in the middle parts of the mounting plate 6, fan blades 18 are all arranged in the circular holes, and the fan blades 18 are all fixedly connected with output shafts of the driving motors 15, the front sides of the round holes are all fixed with separation nets 19 through fixing bolts, and the separation nets 19 are used for preventing sundries from entering the unit;
the projector can be hidden and installed in the wall body without using a projector bracket, so that the projector is prevented from being easily collided and toppled, and the problems that the projector is easily polluted by dust when exposed to an external heat dissipation port and the bracket occupies a large area are well solved; meanwhile, the side heat dissipation boxes 5 are respectively arranged on the two sides of the projector to form the air inlet channel 12 and the heat dissipation channel 13, and the air inlet fan unit 7 and the heat dissipation unit 8 work simultaneously to realize the heat dissipation function of the projector hidden in a wall body, and the heat dissipation effect is good.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a can hide in the projection arrangement of wall body installation from taking heat dissipation mechanism, includes wall body (1), its characterized in that: the wall body (1) is provided with a hidden groove (2), a mounting box (3) is fixedly mounted in the hidden groove (2), the opening side of the mounting box (3) faces outwards, U-shaped plates (10) are welded at the two ends of the opening side, the U-shaped plates (10) are all attached to the outer side of the wall body (1), a projector (4) is inserted into the mounting box (3), side heat dissipation boxes (5) are fixed to the two sides of the projector (4), one side and the front side of each side heat dissipation box (5) attached to the projector (4) are of an open structure, mounting plates (6) are fixed to the front sides of the side heat dissipation boxes (5) through screws, positioning plates (9) are welded to the side edges of the mounting plates (6), the positioning plates (9) and the corresponding U-shaped plates (10) are connected and fixed through a plurality of self-locking screws (11), and air inlet channels (12) are arranged inside the side heat dissipation boxes (5) on one side, install into fan group (7) on locating plate (9) of this side heat dissipation box (5) front end, be located the inside heat dissipation channel (13) that is of side heat dissipation box (5) of opposite side, install heat dissipation unit (8) on locating plate (9) of this side heat dissipation box (5) front end, it all communicates with each other with the outside to advance fan group (7), heat dissipation unit (8), be fixed with disk cold liquid pipe (14) in inlet air channel (12), inlet air channel (12) communicate with each other with the air intake of projecting apparatus (4) one side, heat dissipation unit (8) communicate with each other with the thermovent of projecting apparatus (4) opposite side.
2. The projection device with the heat dissipation mechanism capable of being hidden in a wall body according to claim 1, wherein: the mounting box (3) and the hidden groove (2) are both arranged to be rectangular structures, two pre-buried screws (21) are pre-buried on the rear groove wall of the hidden groove (2), screw through holes (20) corresponding to the positions of the pre-buried screws (21) are formed in the rear side of the mounting box (3), and the pre-buried screws (21) penetrate through the corresponding screw through holes (20) and are locked inside the mounting box (3) through locking nuts (22).
3. The projection device with the heat dissipation mechanism capable of being hidden in a wall body according to claim 2, wherein: the mounting box is characterized in that butt straps (23) are welded at the rear ends of the two inner sides of the mounting box (3), a partition plate (25) is placed at the rear side of the inner part of the mounting box (3), the two sides of the partition plate (25) are respectively attached to the two butt straps (23), and the partition plate (25) and the butt straps (23) are fixedly connected through positioning bolts (24).
4. The projection device with the heat dissipation mechanism capable of being hidden in a wall body according to claim 1, wherein: advance fan group (7) and heat dissipation unit (8) and all include net section of thick bamboo (16) of welding at mounting panel (6) rear side, all be provided with driving motor (15) in net section of thick bamboo (16), driving motor (15) are all fixed on the inner wall of net section of thick bamboo (16) through a plurality of connecting rods (17), the round hole has all been seted up at the middle part of mounting panel (6), all is provided with flabellum (18) in this round hole, flabellum (18) all with the output shaft fixed connection of driving motor (15), the front side of round hole all is fixed with through fixing bolt and separates net (19).
5. The projection device with the heat dissipation mechanism capable of being hidden in a wall body according to claim 1, wherein: u type opening (1101) have all been seted up to the head end of self-locking screw (11), the both ends of U type opening (1101) all set up to detain position piece (1102), detain position piece (1102) and all set up to semicircle form, and detain the outside of position piece (1102) and be smooth arcwall face, the inside of detaining position piece (1102) all is provided with reset rubber.
6. The projection device with the heat dissipation mechanism capable of being hidden in a wall body for installation according to claim 1 or 5, wherein: the positioning plate (9) is provided with bolt through holes, the front side of the U-shaped plate (10) is provided with step holes (1001) corresponding to the bolt through holes, and the head ends of the self-locking screws (11) penetrate through the bolt through holes and are clamped and embedded in the corresponding step holes (1001) to be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190458.3A CN111338164B (en) | 2020-03-18 | 2020-03-18 | Can hide projection arrangement from taking heat dissipation mechanism in wall body installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190458.3A CN111338164B (en) | 2020-03-18 | 2020-03-18 | Can hide projection arrangement from taking heat dissipation mechanism in wall body installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111338164A CN111338164A (en) | 2020-06-26 |
| CN111338164B true CN111338164B (en) | 2021-11-23 |
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ID=71186233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010190458.3A Active CN111338164B (en) | 2020-03-18 | 2020-03-18 | Can hide projection arrangement from taking heat dissipation mechanism in wall body installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111338164B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113759642B (en) * | 2021-09-13 | 2023-02-17 | 德州职业技术学院 | Intelligent projector for modern teaching and training |
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| EP0531266A3 (en) * | 1991-09-06 | 1993-06-02 | Smeg S.P.A. | Built-in oven with two baking rooms |
| JP2006220708A (en) * | 2005-02-08 | 2006-08-24 | Canon Inc | Projection type display device |
| CN104501228A (en) * | 2014-12-29 | 2015-04-08 | 常州市龙道电子商务有限公司 | Foldable type induction cooker |
| CN107559932A (en) * | 2017-09-21 | 2018-01-09 | 东莞市联洲知识产权运营管理有限公司 | A kind of concealed domestic electric heating device |
| CN108153393A (en) * | 2018-02-26 | 2018-06-12 | 蒋文婷 | A kind of computer and information engineering heat dissipation dust-extraction unit |
| CN208239957U (en) * | 2018-06-22 | 2018-12-14 | 黄河科技学院 | A kind of computer mainframe box with dust-proof radiating function |
| CN208796173U (en) * | 2018-10-25 | 2019-04-26 | 烟台汽车工程职业学院 | A kind of fixed device of computer motherboard |
| CN210072953U (en) * | 2019-04-19 | 2020-02-14 | 河北机电职业技术学院 | Can hide projecting apparatus in wall body that public class was used |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9273880B2 (en) * | 2013-08-14 | 2016-03-01 | Elwha Llc | Heating device with condensing counter-flow heat exchanger |
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2020
- 2020-03-18 CN CN202010190458.3A patent/CN111338164B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0531266A3 (en) * | 1991-09-06 | 1993-06-02 | Smeg S.P.A. | Built-in oven with two baking rooms |
| JP2006220708A (en) * | 2005-02-08 | 2006-08-24 | Canon Inc | Projection type display device |
| CN104501228A (en) * | 2014-12-29 | 2015-04-08 | 常州市龙道电子商务有限公司 | Foldable type induction cooker |
| CN107559932A (en) * | 2017-09-21 | 2018-01-09 | 东莞市联洲知识产权运营管理有限公司 | A kind of concealed domestic electric heating device |
| CN108153393A (en) * | 2018-02-26 | 2018-06-12 | 蒋文婷 | A kind of computer and information engineering heat dissipation dust-extraction unit |
| CN208239957U (en) * | 2018-06-22 | 2018-12-14 | 黄河科技学院 | A kind of computer mainframe box with dust-proof radiating function |
| CN208796173U (en) * | 2018-10-25 | 2019-04-26 | 烟台汽车工程职业学院 | A kind of fixed device of computer motherboard |
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| CN111338164A (en) | 2020-06-26 |
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