CN110738877A

CN110738877A - single-chip LCD projector for teaching

Info

Publication number: CN110738877A
Application number: CN201911214933.XA
Authority: CN
Inventors: 周军; 周皓
Original assignee: Suzhou Desmil Intelligent Technology Co Ltd
Current assignee: Suzhou Desmil Intelligent Technology Co Ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-01-31

Abstract

The invention discloses single-chip LCD projectors for teaching, which comprises a projector shell, wherein a shell ventilation opening is arranged on the projector shell, a radiator is arranged on the inner wall of the projector shell, an internal component protective shell is arranged in the projector shell, an LED light source is arranged in the internal component protective shell, a condenser lens is arranged on the side of the LED light source, an illumination system reflector is arranged on the other side of the condenser lens, a collimating lens is arranged on the side of the illumination system reflector, a transmission type LCD light valve is arranged on the other side of the collimating lens, a field lens is arranged on the other side of the transmission type LCD light valve, an imaging system reflector is arranged on the other side of the field lens, a projection lens is arranged on the side of the imaging system reflector, and rectangular cooling fins are arranged on the two sides of the LED light source and the projection lens.

Description

single-chip LCD projector for teaching

Technical Field

The invention relates to the technical field of LCD projector equipment, in particular to single-chip LCD projectors for teaching.

Background

The present invention relates to a single-chip liquid crystal projector, which uses transmissive full-color Liquid Crystal Display (LCD) as light valve, and is based on Kohler lighting system to focus the light source image near the lens entrance pupil, and the lens forms the light valve image on the screen.

However, the optical path structure adopted by the conventional LCD projector for teaching is short-sleeve mirror reflection and direct projection, the design of the direct projection and short-sleeve mirror reflection projectors is mainly limited by the length of the optical path and the length and width of the lens, the number of limited elements is large, the shape program is fixed, and the product differentiation of different manufacturers is not large, but the requirements on the shape and appearance of the single LCD projector become especially important because the single LCD projector is converted from the traditional entertainment KTV type to the public education consumer digital code, so that single-chip LCD projectors for teaching are urgently needed to be developed in the market to help people to solve the conventional problems.

Disclosure of Invention

The invention aims to provide single-chip LCD projectors for teaching, which are used for solving the problem that the appearance design of a whole machine proposed in the background technology is not beneficial to diversified production of the appearance design of a product due to a large number of limited elements.

single-chip LCD projectors for teaching use, including a projector housing, wherein the projector housing is provided with a housing vent, the inner wall of the projector housing is provided with a heat sink, the projector housing is internally provided with an internal assembly protective housing, the internal assembly protective housing is fixedly connected with the projector housing through screws, the internal assembly protective housing is internally provided with an LED light source, the LED light source is fixedly connected with the internal assembly protective housing through screws, the side of the LED light source is provided with a condenser lens, the other side of the condenser lens is provided with a lighting system reflector, the side of the lighting system reflector is provided with a collimating lens, the other 462 side of the collimating lens is provided with a transmissive LCD light valve, the other 7 side of the transmissive LCD light valve is provided with a field lens, the collimating lens, the two sides of the transmissive LCD light valve and the field lens are provided with a heat dissipation mesh, the heat dissipation mesh is fixedly connected with the internal assembly protective housing through a slot, the heat dissipation mesh is fixedly connected with the heat dissipation mesh, the heat dissipation mesh is fixedly connected with the internal assembly protective housing through a rectangular slot, the imaging system reflector is provided with the imaging system reflector 634 side of the imaging system reflector, the imaging system reflector is provided with the projector housing, the sliding system reflector is provided with the sliding rod, the sliding rod is provided with the sliding rod, the sliding rod of the sliding rod of the.

Preferably, the end of the retainer passes through the fixed hole slot and extends into the interior of the slide bar.

Preferably, the condenser, the lighting system reflector, the collimating lens, the transmissive LCD light valve, the field lens, the imaging system reflector and the projector housing are all fixedly connected through a clamping groove.

Preferably, the supporting column comprises a shell, a rectangular sliding groove, a rotating gear and a fixing groove, the rectangular sliding groove, the rotating gear and the fixing groove are all located inside the shell, the rotating gear is located inside the fixing groove, and the rotating gear and the fixing rack are in meshing connection.

Preferably, the rotating gear is rotatably connected with the housing through a rotating shaft.

Preferably, the radiator includes casing, motor, mounting, heat dissipation flabellum and ventilation hole net, motor, mounting and heat dissipation flabellum all are located the inside of casing, the heat dissipation flabellum is located the side of motor, and through the key-type connection between heat dissipation flabellum and the motor, through mounting fixed connection between motor and the casing, be provided with the ventilation hole net on the casing, and through screw fixed connection between ventilation hole net and the casing.

Preferably, the number of the fixing pieces is two, and the fixing pieces are fixedly connected with the machine shell and the motor through screws.

Preferably, the number of the radiators is two, and the radiators are fixedly connected with the projector shell through screws.

Preferably, the projection lens is fixedly connected with the inner assembly protective shell through a clamping groove.

Preferably, the projector shell includes anticorrosive coating, buffer layer, wearing layer and heat dissipation layer, the anticorrosive coating is located the surface of projector shell, the heat dissipation layer is located the internal surface of projector shell, buffer layer and wearing layer are located between anticorrosive coating and the heat dissipation layer, the buffer layer is located the side of wearing layer.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the long-axis mirror reflection is adopted, so that the number of appearance design limiting elements of the projector is reduced, the long-axis mirror reflection is mainly limited by the length of a light path and the width of a lens, a larger space is provided for the appearance design of the projector, and the problems that the number of the integral appearance design limiting elements is large, and the product diversified production is not facilitated are solved;

2. according to the invention, the th anti-skid column and the second anti-skid column are arranged, so that the projector shell and the support column can be well and stably placed on an object, and the problem that the projector generates offset due to unstable support and causes adverse effect on the projection effect is solved;

3. according to the invention, through the arranged radiator and the ventilation opening of the shell, cold air circulation can be well formed so as to cool the temperature in the shell of the projector, so that the projector can work better, and the problems of failure and various abnormalities of internal parts caused by poor heat dissipation capability of the projector are solved;

4. according to the invention, the rectangular sliding groove and the rotating gear are arranged on the supporting column, and the fixed rack and the rectangular sliding block are arranged on the sliding rod, so that the projector can better move up and down for persons, and the problem that the height of the projector cannot be well adjusted is solved;

5. according to the invention, the rectangular radiating fins are arranged on the internal component protective shell, so that the temperature in the internal component protective shell can be well reduced, the projector can work better, and the problem that the normal use of the LCD projector is influenced due to high internal temperature caused by long operation time is solved;

6. according to the invention, the limit pieces and the fixing hole grooves are arranged, fixing can be well carried out on the sliding rods and the supporting columns, so that the sliding rods and the supporting columns are more stable, and the problem that the sliding rods and the supporting columns are unstable after moving is solved;

7. the protection device can well protect objects in the projector shell by arranging the lens protection cover, the projector shell and the internal component protection shell, and solves the problem that the internal structure is damaged due to accidental collision;

8. according to the invention, the fixing nut and the threaded connecting piece are arranged, so that the projector shell and the sliding rod are more conveniently and quickly fixed, and the problem that the projector shell and the sliding rod are not easy to disassemble and assemble is solved.

Drawings

FIG. 1 is a schematic diagram of a single-chip LCD projector for teaching purpose of in accordance with the present invention;

FIG. 2 is a side view of teaching single-chip LCD projectors according to the present invention;

FIG. 3 is a view showing the connection between the slide bar and the support post according to the present invention;

FIG. 4 is a schematic view of the heat sink of the present invention;

FIG. 5 is an exploded view of an LED light source, transmissive LCD light valve and projection lens of the present invention;

FIG. 6 is a schematic diagram of the structure of an LED light source, a transmissive LCD light valve and a projection lens according to the present invention;

FIG. 7 is an enlarged view of a portion of region A of the present invention.

In the figure, the projector comprises a projector shell 1, a projector shell 2, a shell ventilation opening 3, a heat radiator 4, an internal component protection shell 5, an LED light source 6, a condenser lens 7, a lighting system reflector 8, a collimating lens 9, a transmission type LCD light valve 10, a field lens 11, an imaging system reflector 12, a rectangular heat radiating fin 13, a projection lens 14, a lens protection cover 15, a heat radiating hole net 16, an antiskid column 17, a fixing nut 18, a threaded connection part 19, a sliding rod 20, a supporting column 21, a fixing hole groove 22, a limiting part 23, a shell 24, a motor 25, a fixing part 26, a heat radiating fan blade 27, a ventilation hole net 28, a fixing rack 29, a shell 30, a rectangular sliding groove 31, a rotating gear 32, a fixing groove 33, a rotating part 34, a rectangular sliding block 35, a second antiskid column 36, an anti-corrosion layer 37, a shock absorption layer 38, an abrasion-resistant layer 39 and a heat radiating layer.

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 some embodiments, not all embodiments, of the present invention .

Please refer to fig. 1-7, embodiments of the invention include teaching single-chip LCD projectors, including projector housing 1, a housing vent 2 is disposed on projector housing 1, so that the temperature inside projector housing 1 can be discharged outside through a housing vent 2, the problem that normal use is affected by an excessively high temperature inside projector housing 1 during operation of the projector is solved well, a heat sink 3 is disposed on the inner wall of projector housing 1, cold cycles can be performed well on the air inside projector housing 1 through a heat sink 3, so that the temperature inside projector housing 1 is reduced, an internal component protective housing 4 is disposed inside projector housing 1, so that the projector cannot work normally, and the internal component protective housing 4 and projector housing 1 are fixedly connected through a screw, the screw connection facilitates installation and disassembly between internal component protective housing 4 and projector housing 1, installation and disassembly between the internal component protective housing 4 and projector housing 1, installation strength is reduced, technical content of the internal component protective housing 4 is reduced, an LED light source 5 is provided inside the protective housing 4, and is facilitated, and cost is saved, and further, furthermore, a lighting source 5 is saved, and further, a lighting source assembly is connected with a projector housing 4, a lighting system is provided, a lighting system is more convenient for a projector, a projector 18, a lighting system is more convenient to be replaced, a lighting system is provided, a lighting system is more convenient to be replaced, a lighting system is provided, a lighting system is provided, a lighting system is provided, a lighting system is provided with a lighting system, a lighting system is provided, a lighting system is provided, a lighting system is more convenient to a lighting system.

Step , the end of the position limiting member 22 passes through the fixing hole slot 21 and extends to the inside of the sliding rod 19, so that the fixed connection between the sliding rod 19 and the supporting column 20 is more stable, the whole structure of the projector is firmer, the projector is not easy to shake, and the sliding rod 19 is convenient to move up and down and fix.

, condenser 6, lighting system reflector 7, collimating lens 8, transmission type LCD light valve 9, all through draw-in groove fixed connection between field lens 10 and imaging system reflector 11 and the projector shell 1, connect through the draw-in groove and make condenser 6, lighting system reflector 7, collimating lens 8, transmission type LCD light valve 9, connection between field lens 10 and imaging system reflector 11 and the projector shell 1 is better nimble, the split that can be quick, the assembly, the consuming time of screw fixation loading and unloading has been saved.

step further, the support column 20 includes the casing 29, rectangle spout 30, rotating gear 31 and fixed recess 32 all are located the inside of casing 29, make the support effect of support column 20 more firm, and rotating gear 31 is located the inside of fixed recess 32, be convenient for rotating gear 31 places the inside at support column 20, make the structure between rotating gear 31 and the support column 20 more stable, the meshing is connected between rotating gear 31 and the fixed rack 28, the meshing is connected transmission efficiency is higher, long service life, the transmission is steady, the reliability is high, can guarantee that instantaneous drive ratio is invariable, can realize the transmission of various positions.

, the rotating gear 31 and the shell 29 are rotatably connected through a rotating shaft, and the rotating gear 31 and the shell 29 can move in a force transmission manner through the rotating shaft, so that the rotation is quicker, the up-and-down movement of the projector is facilitated, and the use of the projector is more convenient.

, the heat sink 3 includes a housing 23, a motor 24, a fixing member 25, a heat dissipating fan blade 26 and a ventilation hole net 27, the motor 24, the fixing member 25 and the heat dissipating fan blade 26 are both located inside the housing 23, the structure is more reasonable, the heat dissipating effect of the heat sink 3 is improved, the heat dissipating fan blade 26 is located at the side of the motor 24, the heat dissipating fan blade 26 can be well driven to rotate when the motor 24 rotates, so that the heat dissipating effect is more excellent, and the heat dissipating fan blade 26 and the motor 24 are connected by a key, which is a key in mechanical transmission, so as to realize the fixed connection between the heat dissipating fan blade 26 and the motor 24, the motor 24 and the housing 23 are fixedly connected by the fixing member 25, so that the motor 24 and the housing 23 are more firmly fixed, the direct damage of the motor to the housing 23 is also reduced, the service life of the heat sink 3 is prolonged, so that the heat dissipating effect is more excellent, the ventilation hole net 27 is arranged on the housing 23, so as to well avoid the collision of a large object with the heat dissipating fan blade 26, thereby protecting the heat dissipating fan blade 26, and reducing the mounting strength of the mounting screw for dismounting the heat sink from the housing 23, and reducing the mounting strength of the mounting screw.

, the fixing element 25 is provided with two, the fixing element 25 is fixedly connected with the casing 23 and the motor 24 through screws, the screws are connected to facilitate the installation and disassembly between the casing 23 and the motor 24 and the fixing element 25, the installation strength is reduced, and the technical content of installation workers is also reduced.

the step is advanced, and radiator 3 is provided with two, and through screw fixed connection between radiator 3 and the projector housing 1, the installation of screw connection between radiator 3 and the projector housing 1 of being convenient for is dismantled, reduces the installation intensity, also reduces installer technical content.

Step , the projection lens 13 is fixedly connected with the inner assembly protective shell 4 through the clamping groove, the projection lens 13 is connected with the inner assembly protective shell 4 through the clamping groove, the connection is flexible, the detachment and the assembly can be fast, the time consumed by fixing and assembling screws is saved, and the whole device is flexible and convenient.

step further, projector housing 1 includes anticorrosive coating 36, buffer layer 37, wearing layer 38 and heat dissipation layer 39, anticorrosive coating 36 is located projector housing 1's surface, it is damaged by external environment corruption to reduce projector housing 1 that can be fine, thereby fine improvement projector housing 1's life, heat dissipation layer 39 is located projector housing 1's internal surface, absorption and heat dissipation are carried out to the temperature of projector housing 1 inside that can be fine, make the radiating effect of projector better, make projector difficult because projector housing 1 high temperature can not normal operating in the use work, buffer layer 37 and wearing layer 38 are located between anticorrosive coating 36 and heat dissipation layer 39, buffer layer 37 is located the side of wearing layer 38, can be fine improvement projector housing 1's heat dissipation shock attenuation and wear-resisting effect, make projector housing 1's life increase, thereby reduce the work efficiency that influences projector housing 1's damage.

The working principle is that when the projector is used, the projector is placed at a corresponding position, the LED light source 5 in the inner component protection shell 4 is started, the LED light source 5 outputs light beams better and more stably through the condenser 6, the light is reflected to the collimating lens 8 through the lighting system reflector 7, the light is transmitted to the transmission type LCD light valve 9 through the collimating lens 8, the light is transmitted to the field lens 10 through the transmission type LCD light valve 9, the light is transmitted to the imaging system reflector 11 through the field lens 10, the light is reflected to the projection lens 13 through the imaging system reflector 11, finally the light is projected onto a screen through the projection lens 13, the projection lens 13 is well protected from being damaged by sharp objects outside through the lens protection cover 14, the utilization rate of the lens is improved, hot air inside the projector shell 1 flows out through the four shell ventilation openings 2, the temperature inside the projector shell 1 is reduced, the motor 24 inside the projector shell 1 is rotated by starting the radiator 3, the heat dissipation motor 24 rotates to drive the heat dissipation 26 to flow into the projector shell 1, the hot air inside the projector shell 1 flows out through the heat dissipation fan, the heat dissipation fan blades, the fan blades are driven by the heat dissipation rotating rod, the heat dissipation rotating rod is improved, the heat dissipation rotating rod is increased, the heat dissipation rotating rod.

It will thus be seen that the embodiments are illustrative and not restrictive in any respect point of view, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

The teaching single-chip LCD projector comprises a projector shell (1) and is characterized in that a shell ventilation opening (2) is arranged on the projector shell (1), a heat radiator (3) is arranged on the inner wall of the projector shell (1), an internal assembly protective shell (4) is arranged inside the projector shell (1), the internal assembly protective shell (4) is fixedly connected with the projector shell (1) through a screw, an LED light source (5) is arranged inside the internal assembly protective shell (4), the LED light source (5) is fixedly connected with the internal assembly protective shell (4) through a screw, a condenser lens (6) is arranged on the side of the LED light source (5), an illuminating system reflector (7) is arranged on the side of the condenser lens (6), a collimating lens (8) is arranged on the side of the illuminating system reflector (7), a transmissive LCD light valve (9) is arranged on the 462 side of the collimating lens (8), a transmissive LCD light valve (9) is arranged on the other side of the collimating lens (462 side of the collimating lens (8), a transmissive lens (9), a rectangular light valve rod (9) is arranged on the other side of the transmissive lens (9), a projection lens (8), a projection lens (19) is provided with a rectangular light-emitting rod fixing mechanism, a projection lens, a projection system reflector (9) and a projection system reflector, a projection system reflector (19) is arranged on a projection rod, a projection rod (17), a projection system reflector (19) is arranged on a projection rod (17), a projection rod (19), a projection rod (17) and a projection rod (17), a projection rod fixing mechanism is arranged between a projection rod (17), a projection rod (17) and a projection rod (17), a projection rod fixing mechanism is arranged on a projection rod (17), a projection rod (17) and a projection rod (17), a projection rod (17) and a projection rod fixing mechanism is arranged on a projection rod fixing mechanism, a projection rod (17), a projection rod fixing mechanism is arranged on a projection rod (17), a projection rod fixing mechanism is arranged on a projection rod fixing mechanism, a projection rod (17), a projection rod fixing mechanism is arranged on a projection rod (17), a projection rod fixing mechanism, a projection rod fixing mechanism.
2. The kind of single-chip LCD projector for teaching of claim 1, wherein the end of the position-limiting member (22) passes through the fixing hole slot (21) and extends to the inside of the sliding rod (19).
3. The kind of single-chip LCD projector for teaching of claim 1, wherein the condenser (6), the lighting system reflector (7), the collimating lens (8), the transmissive LCD light valve (9), the field lens (10), the imaging system reflector (11) and the projector housing (1) are all fixedly connected through slots.
4. The single-chip LCD projector as claimed in claim 1, wherein the supporting post (20) includes a housing (29), a rectangular slot (30), a rotating gear (31) and a fixing groove (32), the rectangular slot (30), the rotating gear (31) and the fixing groove (32) are all located inside the housing (29), the rotating gear (31) is located inside the fixing groove (32), and the rotating gear (31) and the fixing rack (28) are engaged with each other.
5. The single-chip LCD projector as claimed in claim 4, wherein the rotary gear (31) is rotatably connected to the housing (29) via a rotary shaft.
6. The single-chip LCD projector for teaching of claim 1, wherein the heat sink (3) includes a housing (23), a motor (24), a fixing member (25), a heat dissipating fan (26) and a ventilation hole net (27), the motor (24), the fixing member (25) and the heat dissipating fan (26) are all located inside the housing (23), the heat dissipating fan (26) is located at the side of the motor (24), the heat dissipating fan (26) is connected with the motor (24) through a key, the motor (24) is fixedly connected with the housing (23) through the fixing member (25), the ventilation hole net (27) is arranged on the housing (23), and the ventilation hole net (27) is fixedly connected with the housing (23) through screws.
7. The single-chip LCD projector as claimed in claim 6, wherein there are two fasteners (25), and the fasteners (25) are fixed to the housing (23) and the motor (24) by screws.
8. The single-chip LCD projector as claimed in claim 1, wherein there are two heat sinks (3), and the heat sinks (3) are fixedly connected to the projector housing (1) by screws.
9. The single-chip LCD projector as claimed in claim 1, wherein the projection lens (13) is fixedly connected to the inner assembly protective shell (4) via a slot.
10. The kind of single-chip LCD projector for teaching of claim 1, wherein the projector housing (1) includes an anti-corrosion layer (36), a shock-absorbing layer (37), a wear-resistant layer (38) and a heat-dissipating layer (39), the anti-corrosion layer (36) is located on the outer surface of the projector housing (1), the heat-dissipating layer (39) is located on the inner surface of the projector housing (1), the shock-absorbing layer (37) and the wear-resistant layer (38) are located between the anti-corrosion layer (36) and the heat-dissipating layer (39), and the shock-absorbing layer (37) is located on the side of the wear-resistant layer (38).