CN110067924B - High stability is projecting apparatus rack for teaching - Google Patents

High stability is projecting apparatus rack for teaching Download PDF

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Publication number
CN110067924B
CN110067924B CN201910275438.3A CN201910275438A CN110067924B CN 110067924 B CN110067924 B CN 110067924B CN 201910275438 A CN201910275438 A CN 201910275438A CN 110067924 B CN110067924 B CN 110067924B
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CN
China
Prior art keywords
frame
lower support
projector
side frame
side frames
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201910275438.3A
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Chinese (zh)
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CN110067924A (en
Inventor
林高丽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wenzhou Gefenqi Wood Industry Co ltd
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Wenzhou Polytechnic
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wenzhou Polytechnic filed Critical Wenzhou Polytechnic
Priority to CN201910275438.3A priority Critical patent/CN110067924B/en
Publication of CN110067924A publication Critical patent/CN110067924A/en
Application granted granted Critical
Publication of CN110067924B publication Critical patent/CN110067924B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
    • F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
    • 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
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • 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
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/28—Undercarriages for supports with one single telescoping pillar
    • 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

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  • 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 relates to the technical field of projectors, in particular to a high-stability projector placing frame for teaching, which comprises a lower support, wherein two ends of the lower support are respectively and fixedly connected with a first side frame and a second side frame, the two first side frames, the two second side frames and the lower support are of an integral structure, one side of each of the two first side frames, the two second side frames and the lower support is fixedly provided with a first connecting frame and a second connecting frame which are of an integral structure, the first side frames and the second side frames are symmetrical relative to the lower support, the end parts of the first side frames and the second side frames, which are away from the lower support, are bent upwards and extend and respectively form a U shape with the lower support, projectors are placed on the lower support, the projectors are positioned among the first side frames, the second side frames, the first connecting frames and the second connecting frames, two ends of the upper surface of a fastening plate are respectively and fixedly connected with a moving mechanism through blind holes, through grooves are, this rack stability is high, is worth promoting.

Description

High stability is projecting apparatus rack for teaching
Technical Field
The invention relates to the technical field of projectors, in particular to a high-stability projector placing frame for teaching.
Background
A projector, also called a projector, refers to a device that can project images or videos onto a screen, and is connected to a computer, a VCD, a BD, a game machine, a DV, etc. through different interfaces to play corresponding video signals, and is widely used in homes, offices, schools, entertainment venues, etc., and according to different working modes, there are different types such as CRT, LCD, and DLP. Present projecting apparatus is in the installation use, some place the projecting apparatus on the desk, facilitate the use, but because the mobility makes the projecting apparatus put in the position inaccurate, need adjust its display position, and it is more troublesome to adjust the demonstration image position, very waste time again, some then hang on the roof, though comparatively firm, need not adjust the demonstration angle, but because fix for a long time and easily accumulate the dust in a place, and because highly higher, so be very inconvenient to the altitude mixture control of projecting apparatus, for this reason, we propose a high stability teaching and use projecting apparatus rack to solve above-mentioned problem.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a high-stability projector placing frame for teaching.
In order to achieve the purpose, the invention adopts the following technical scheme:
the projector placing frame comprises a lower support, wherein two ends of the lower support are fixedly connected with a first side frame and a second side frame respectively, the two first side frames, the two second side frames and the lower support are of an integral structure, a first connecting frame and a second connecting frame of the integral structure are fixedly arranged on one side of the lower support, the first side frames and the second side frames are symmetrical relative to the lower support, the end parts of the first side frames and the second side frames, which are away from the lower support, are bent upwards and extend and are respectively connected with the lower support to form a U shape, the upper ends of the first connecting frame and the second connecting frame are respectively connected with the first side frames and the second side frames, projectors are placed on the lower support, the projectors are positioned among the first side frames, the second side frames, the first connecting frame and the second connecting frame, a pair of fastening plates which are parallel to each other is placed at the upper ends of the projectors, and two ends of the upper surface of the fastening plates are respectively and fixedly connected with a moving mechanism, the upper end parts of the first side frame and the second side frame, which are positioned on the projector, are fixedly provided with through grooves, the moving mechanisms are fixedly sleeved with the first side frame and the second side frame through the through grooves respectively, the first side frame and the second side frame are connected with connecting mechanisms between the moving mechanisms, the upper ends of the connecting mechanisms are fixedly connected with rotating balls, and the other ends of the rotating balls are fixedly connected with supporting mechanisms.
Preferably, first annular has all been fixed to have seted up in first side bearer and the second side bearer middle part, first annular is close to the inboard fixed first fan that is equipped with of projecting apparatus, the second annular has been fixed to have seted up in upper bracket middle part, the inboard fixed second fan that is equipped with that the second annular is close to the projecting apparatus.
Preferably, the upper surface of the lower support is fixedly provided with an elastic mechanism, the elastic mechanism comprises an elastic cushion and buffer blocks, at least two buffer blocks are fixedly arranged between the lower support and the elastic cushion, a third fan is fixedly arranged on the surface of the lower support and positioned between the buffer blocks, the elastic cushion is fixedly provided with a plurality of through holes, the moving mechanism comprises a rubber head screw, an upper support and an H-shaped movable groove, the two ends of the upper support are fixedly provided with the H-shaped movable groove, the rubber head screw is arranged in the H-shaped movable groove, and the end part of the rubber head screw penetrates through the through groove at the end parts of the first side frame and the second side frame to be matched with the blind hole in the surface of the fastening plate.
Preferably, the connecting mechanism comprises a bearing frame and a switching sleeve, the two ends of the bearing frame are fixedly connected with the upper support through bolts, the switching sleeve is fixedly arranged in the middle of the bearing frame, and the switching sleeve is connected with the rotating ball in a rotating sleeved mode.
Preferably, the supporting mechanism comprises a piston rod, an electric telescopic cylinder and a supporting plate, the piston rod is fixedly connected with the rotating ball and fixedly installed at the control output end of the electric telescopic cylinder, and the electric telescopic cylinder is fixedly connected with the supporting plate through a cylinder seat.
Preferably, the surface of the fastening plate close to the projector is fixedly covered with a non-slip mat.
The projector placing rack for high-stability teaching provided by the invention has the beneficial effects that: this high stability is height that projecting apparatus can be adjusted through electric telescopic cylinder to the projecting apparatus rack for teaching, the projection angle of projecting apparatus can be adjusted to inside rolling ball, not only can adjust the distance about the projecting apparatus through moving mechanism, and can be through the distance of adjusting the mounting plate in order to adapt to not unidimensional projecting apparatus, the elastic mechanism on lower carriage surface plays better shock attenuation protection effect, in addition, about this rack and both sides all are equipped with the fan, not only help the projecting apparatus heat dissipation, and can prevent that the dust from piling up, remove the work of cleaning from.
Drawings
Fig. 1 is a schematic structural view of a high-stability projector placement rack for teaching according to the present invention;
fig. 2 is a schematic view of a three-dimensional structure observed obliquely below the high-stability teaching projector holder according to the present invention;
fig. 3 is a schematic sectional structure view of a high-stability projector placement rack for teaching according to the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 5 is an enlarged schematic view of the structure at B in fig. 1.
In the figure: the projector comprises a projector 1, a lower bracket 2, a first side bracket 31, a second side bracket 32, a first connecting bracket 41, a second connecting bracket 42, a first annular groove 5, an upper bracket 6, an H-shaped movable groove 7, a rubber head screw 8, a fastening plate 9, a second annular groove 10, an adapter sleeve 11, a piston rod 12, an electric telescopic cylinder 13, a supporting plate 14, a first fan 15, a second fan 16, a bearing bracket 17, a rotating ball 18, an anti-skid pad 19, an elastic pad 20, a through hole 21, a buffer block 22, a third fan 23, an elastic mechanism 24, a supporting mechanism 25, a connecting mechanism 26, a bolt 27 and a moving mechanism 28.
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.
Referring to fig. 1 to 5, a high-stability projector holder for teaching, includes a lower frame 2, a first side frame 31 and a second side frame 32 fixedly connected to two ends of the lower frame 2, the first side frame 31, the second side frame 32 and the lower frame 2 are of an integral structure, and a first connecting frame 41 and a second connecting frame 42 of the integral structure are fixedly arranged on one side of the lower frame, the first side frame 31 and the second side frame 32 are symmetrical with respect to the lower frame 2, the end portions of the first side frame 31 and the second side frame 32 away from the lower frame 2 are bent upwards and extend and form a U-shape with the lower frame 2, the upper ends of the first connecting frame 41 and the second connecting frame 42 are respectively connected to the first side frame 31 and the second side frame 32, a projector 1 is placed on the lower frame 2, the projector 1 is located between the first side frame 31, the second side frame 32, the first connecting frame 41 and the second connecting frame 42, so as to better protect the periphery of the projector 1, first annular 5 has all been fixed to have seted up in first side frame 31 and second side frame 32 middle part, and first annular 5 is close to the inboard fixed first fan 15 that is equipped with of projecting apparatus 1, can carry out the thermal treatment to the both sides of projecting apparatus 1 through first fan 15 to can prevent that the dust from piling up.
A pair of fastening plates 9 which are parallel to each other is placed at the upper end of the projector 1, the surface of the fastening plate 9 close to the projector 1 is fixedly covered with an anti-slip pad 19, the anti-slip pad 19 enables the projector 1 and the fastening plate 9 to be tightly attached and prevents the projector from moving better, two ends of the upper surface of the fastening plate 9 are fixedly connected with moving mechanisms 28 through being provided with blind holes, each moving mechanism 28 comprises a rubber head screw 8, an upper bracket 6 and an H-shaped movable groove 7, the two ends of the upper bracket 6 are fixedly provided with the H-shaped movable grooves 7, the rubber head screws 8 are arranged in the H-shaped movable grooves 7, the end parts of the rubber head screws 8 penetrate through the through grooves at the end parts of the first side bracket 31 and the second side bracket 32 to be matched with the blind holes on the surface of the fastening plate 9, the adhesive degree between the fastening plate 9 and the projector 1 can be adjusted by rotating the rubber head screws 8, the adhesive, the upper end parts of the first side frame 31 and the second side frame 32, which are located on the projector 1, are fixedly provided with through grooves, the four moving mechanisms 28 are fixedly sleeved with the first side frame 31 and the second side frame 32 through the through grooves respectively, the placing frame can adapt to projectors 1 with various sizes by moving the rubber head screws 8, and the position distances in the left side direction and the right side direction of the projector 1 can be adjusted.
A connecting mechanism 26 is connected between the first side frame 31 and the second side frame 32 and the moving mechanism 28, the connecting mechanism 26 comprises a bearing frame 17 and an adapter sleeve 11, both ends of the bearing frame 17 are fixedly connected with the upper frame 6 through bolts 27, the adapter sleeve 11 is fixedly arranged in the middle of the bearing frame 17, the adapter sleeve 11 is rotatably sleeved and connected with a rotating ball 18, the other end of the rotating ball 18 is fixedly connected with a supporting mechanism 25, the supporting mechanism 25 comprises a piston rod 12, an electric telescopic cylinder 13 and a resisting plate 14, the piston rod 12 is fixedly connected with the rotating ball 18 and is fixedly arranged at the control output end of the electric telescopic cylinder 13, the electric telescopic cylinder 13 is fixedly connected with the resisting plate 14 through a cylinder seat, a user can install the resisting plate 14 on a wall body or a beam frame, the height of the bearing frame can be directly adjusted through the electric telescopic cylinder 13, and the throwing angle of the projector can be adjusted through the rotating ball 18, is safe and convenient.
Lower carriage 2 is close to the fixed surface of the upper surface of projecting apparatus 1 and is equipped with elastic mechanism 24, elastic mechanism 24 includes cushion 20 and buffer block 22, the fixed two at least buffer blocks 22 that are equipped with between lower carriage 2 and the cushion 20, buffer block 22 and cushion 20 all play the shockproof effect of buffering between 1 bottom of projecting apparatus and the lower carriage 2, and lower carriage 2 surface is located the fixed third fan 23 that is equipped with between buffer block 22, a plurality of through-holes 21 have been seted up to cushion 20 fixed surface, third fan 23 sees through-hole 21 and can carry out the thermal treatment to 1 bottom of projecting apparatus, and prevent that the dust from piling up, through-hole 21 itself just plays the radiating effect to the bottom of projecting apparatus 1 in addition.
This high stability teaching is with projecting apparatus rack is installed on wall body or roof beam structure through supporting board 14, can adjust projecting apparatus 1's height through electric telescopic cylinder 13, projecting apparatus 1's input angle can be adjusted to rolling ball 18, not only can adjust the distance about projecting apparatus 1 through moving mechanism 28, and can be in order to adapt to not unidimensional projecting apparatus 1 through the distance of adjusting mounting plate 9, can place two projecting apparatus 1 even and carry out the simultaneous projection, the elastic mechanism 24 on 2 surperficial surfaces of lower carriage plays better shock attenuation protection effect, in addition, this rack is from top to bottom and both sides all are equipped with the fan, not only help projecting apparatus 1 to dispel the heat, and can prevent that the dust from piling up, the work of removing from.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (3)

1. The projector placing frame for the high-stability teaching comprises a lower support (2) and is characterized in that two ends of the lower support (2) are fixedly connected with a first side frame (31) and a second side frame (32) respectively, the two first side frames (31), the two second side frames (32) and the lower support (2) are of an integral structure, a first connecting frame (41) and a second connecting frame (42) of the integral structure are fixedly arranged on one side of each of the two first side frames (31), the two second side frames (32) are symmetrical relative to the lower support (2), the end parts, away from the lower support (2), of the first side frames (31) and the second side frames (32) are bent upwards and extend and form a U shape with the lower support (2) respectively, the upper ends of the first connecting frame (41) and the second connecting frame (42) are connected with the first side frame (31) and the second side frame (32) respectively, and a projector (1) is placed on the lower support (2), the projector (1) is positioned between a first side frame (31), a second side frame (32), a first connecting frame (41) and a second connecting frame (42), a pair of fastening plates (9) which are parallel to each other is placed at the upper end of the projector (1), moving mechanisms (28) are fixedly connected to the two ends of the upper surface of each fastening plate (9) through blind holes, each moving mechanism (28) comprises a rubber head screw (8), an upper frame (6) and an H-shaped movable groove (7), through grooves are fixedly formed in the upper end parts, located on the projector (1), of the first side frame (31) and the second side frame (32), four rubber head screws (8) are fixedly sleeved with the first side frame (31) and the second side frame (32) through the through grooves respectively, the moving mechanisms (28) between the first side frame (31) and the second side frame (32) are connected with connecting mechanisms (26), and the upper ends of the connecting mechanisms (26) are sleeved with rotating balls (18), the other end of the rotating ball (18) is fixedly connected with a supporting mechanism (25); the middle parts of the first side frame (31) and the second side frame (32) are fixedly provided with first ring grooves (5), the inner sides of the first ring grooves (5) close to the projector (1) are fixedly provided with first fans (15), the middle part of the upper support (6) is fixedly provided with second ring grooves (10), and the inner sides of the second ring grooves (10) close to the projector (1) are fixedly provided with second fans (16); an elastic mechanism (24) is fixedly arranged on the upper surface of the lower support (2), the elastic mechanism (24) comprises an elastic cushion (20) and buffer blocks (22), at least two buffer blocks (22) are fixedly arranged between the lower support (2) and the elastic cushion (20), a third fan (23) is fixedly arranged on the surface of the lower support (2) and between the buffer blocks (22), and a plurality of through holes (21) are fixedly formed in the surface of the elastic cushion (20); the utility model discloses a bearing bracket, including upper bracket (6), upper bracket (6) both ends all fixed "H" type activity groove (7) of having seted up, "H" type activity groove (7) are equipped with in and glue first screw (8), the tip of gluing first screw (8) runs through logical groove and the blind hole on mounting plate (9) surface of first side bearer (31) and second side bearer (32) tip and cooperatees, coupling mechanism (26) are including accepting frame (17) and switching cover (11), the both ends of accepting frame (17) all are through bolt (27) and upper bracket (6) fixed connection, it is fixed in middle part to accept frame (17) and is equipped with switching cover (11), switching cover (11) rotate the registrate with rolling ball (18) and be connected.
2. The projector placing rack with high stability for teaching according to claim 1, wherein the supporting mechanism (25) comprises a piston rod (12), an electric telescopic cylinder (13) and a supporting plate (14), the piston rod (12) is fixedly connected with the rotating ball (18) and is fixedly installed at the control output end of the electric telescopic cylinder (13), and the electric telescopic cylinder (13) is fixedly connected with the supporting plate (14) through a cylinder seat.
3. The projector placement rack for teaching purpose of high stability as claimed in claim 1, wherein the surface of the fastening plate (9) close to the projector (1) is fixedly covered with a non-slip mat (19).
CN201910275438.3A 2019-04-08 2019-04-08 High stability is projecting apparatus rack for teaching Expired - Fee Related CN110067924B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910275438.3A CN110067924B (en) 2019-04-08 2019-04-08 High stability is projecting apparatus rack for teaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910275438.3A CN110067924B (en) 2019-04-08 2019-04-08 High stability is projecting apparatus rack for teaching

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CN110067924A CN110067924A (en) 2019-07-30
CN110067924B true CN110067924B (en) 2021-02-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111140729A (en) * 2019-11-20 2020-05-12 西安微城信息科技有限公司 Projector convenient for adjusting throwing angle and operation method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205447156U (en) * 2015-12-30 2016-08-10 天津市巨展机戭装备有限公司 Controllable adjusting bracket of projector
CN206572161U (en) * 2017-03-14 2017-10-20 桂林师范高等专科学校 A kind of electronic information projecting apparatus support
CN206656092U (en) * 2017-04-12 2017-11-21 重庆工程学院 A kind of easy-to-mount Digital Media teaching projecting apparatus
CN207349734U (en) * 2017-10-10 2018-05-11 唐山师范学院 A kind of teaching projector hanging rack being easily installed
CN208397645U (en) * 2018-01-11 2019-01-18 科曼多建筑装饰材料（上海）有限公司 A kind of suspension type projector fixing device
CN207704180U (en) * 2018-01-24 2018-08-07 广东三嘉教育装备有限公司 A kind of enterprise's meeting room intelligence displaying projecting apparatus
CN208620028U (en) * 2018-07-25 2019-03-19 成都瑞德利科技有限公司 A kind of laser projection
CN109296896A (en) * 2018-11-08 2019-02-01 高立伟 A kind of adjustable educational projector frame

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Effective date of registration: 20220720

Address after: 325000 Tangtou Industrial Zone, Oubei street, Yongjia County, Wenzhou City, Zhejiang Province (in Yongjia County Xinxin yarn weaving Co., Ltd.)

Patentee after: Wenzhou gefenqi Wood Industry Co.,Ltd.

Address before: 325000 Wenzhou City National University Science Park incubator, No. 38 Dongfang South Road, Ouhai District, Wenzhou, Zhejiang

Patentee before: WENZHOU VOCATIONAL & TECHNICAL College

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Granted publication date: 20210205