CN110989275A

CN110989275A - Simple installation single LCD projector with dustproof structure

Info

Publication number: CN110989275A
Application number: CN202010008889.3A
Authority: CN
Inventors: 王安东
Original assignee: Cnd Electronic Technology Shenzhen Co ltd
Current assignee: Cnd Electronic Technology Shenzhen Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-04-10

Abstract

The invention discloses a simple-installation single LCD projector with a dustproof structure, which comprises a shell, a light projecting assembly and a refraction assembly, wherein the light projecting assembly and the refraction assembly are fixed inside the shell, dustproof shells are arranged outside the light projecting assembly and the refraction assembly, and light emitted from the light projecting assembly is emitted out of the shell through the refraction assembly. The optical device in the single-chip projector is divided into two components and is respectively provided with the dustproof shell, and the optical device is protected by the two layers of dust prevention of the shell and the dustproof shell, so that external dust can be effectively isolated, and the normal work of the optical device is protected. In addition, in the running water production process, two separable components are produced, and at last, only two components are required to be directly fixed inside the base of the projector for final assembly, so that the production process of the running water line is simplified, the smoothness of the production of the running water line is facilitated, and the production efficiency is improved.

Description

Simple installation single LCD projector with dustproof structure

Technical Field

The invention relates to the technical field of single LCD projectors, in particular to a simple-installation single LCD projector with a dustproof structure.

Background

The traditional single LCD projector adopts a piece of LCD color liquid crystal screen as an image display source, LEDs and the like as light sources, and emitted light is adjusted by a front lens and a rear lens and finally emitted by a magnifying lens, so that a magnified image is obtained. Since the single LCD projector has the advantage of low cost, and the mature production technology developed for a long time, it has a certain share in the projector market, especially the low-end market, and has a great attraction. In addition, due to the simple structure, there is a certain development space in the micro projector market.

Inside optical device of current single LCD projecting apparatus directly places inside the base shell, and for guaranteeing the heat dissipation, the shell is provided with the heat dissipation window of bladelike, and the shell surface still has a plurality of hole groove, so dust can enter into inside the shell to pile up in optical device's inside, disturb heat dissipation, light transmission and the refraction of projecting apparatus, influence the normal work of projecting apparatus. In addition, during production, because a plurality of optical devices are arranged in the shell, the assembly line is lengthened, and the difficulty of flow production is increased.

The above disadvantages need to be improved.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a simple-installation single LCD projector with a dustproof structure.

The technical scheme of the invention is as follows:

the utility model provides a take dustproof construction's single LCD projecting apparatus of simple and easy installation, includes casing, light projection subassembly and refraction subassembly, the light projection subassembly with the refraction subassembly is fixed the inside of casing, the light projection subassembly with the outside of refraction subassembly all is provided with dust cover, the light that sends in the light projection subassembly is through the refraction subassembly certainly the casing jets out.

The simple installation single LCD projector with the dustproof structure is characterized in that the shell comprises a base and a face cover, and the base is buckled with the face cover.

The simple installation single LCD projector with the dustproof structure is characterized in that the dustproof shell comprises a dustproof shell body and a dustproof cover, and the dustproof shell body is connected with the dustproof cover in a buckled mode.

Foretell take single LCD projector of simple and easy installation of dustproof construction, the inside PCBA board that still is provided with of casing, the PCBA board is connected LCD display screen in the refraction subassembly.

The simple installation single LCD projector with the dustproof structure is characterized in that the dustproof shell is provided with a screw hole, and the dustproof shell is fixed inside the shell through a screw.

The light projection assembly comprises an LED light source, a reflection cup and a front lens, wherein light emitted by the LED light source is collected by the reflection cup and passes through the front lens to irradiate the refraction assembly.

Further, the LED light source is a surface light source.

Further, the LED light source comprises a substrate and a plurality of LED lamp beads.

Further, the reflector cup covers the LED light source.

Furthermore, the bottom end of the reflection cup is provided with a bending part.

Still further, the bottom of the inner wall of the dustproof shell is provided with a first fixing groove, the bottom of the outer wall of the outer frame is provided with a boss, and the boss and the bent part are embedded into the first fixing groove, so that the outer frame and the reflective cup are fixed on the dustproof shell.

Furthermore, the bottom of the inner wall of the dustproof shell is provided with a clamping groove, and the front lens is inserted into the clamping groove and fixed at the bottom of the dustproof shell.

The simple installation single LCD projector with the dustproof structure is characterized in that the light projecting assembly is further provided with a temperature control switch and a radiator.

Further, the radiator comprises a radiating fin, and the LED light source is tightly attached to the radiating fin.

Further, the temperature control switch controls the LED light source.

The simple-installation single LCD projector with the dustproof structure is characterized in that the refraction assembly comprises a rear lens, an LCD display screen and a reflector, and light emitted by the light projection assembly sequentially passes through the LCD display screen and the rear lens and is reflected by the reflector and then emitted out of the refraction assembly.

Furthermore, the dustproof shell is provided with a first slot, and the reflector is inserted into the first slot and fixed.

Furthermore, the dustproof shell is provided with a second slot, and the rear lens is inserted into the second slot to be fixed.

Furthermore, a second fixing groove is formed in the bottom of the dustproof shell, and the LCD screen is fixed in the second fixing groove.

Further, the rear lens is parallel to the LCD display screen, and an included angle between the reflective mirror and the rear lens and between the reflective mirror and the LCD display screen is 45 degrees.

The simple installation single LCD projector with the dustproof structure is characterized in that the refraction assembly is in threaded connection with the projection lens, and light emitted by the light projection assembly is emitted out of the projection lens after passing through the refraction assembly.

The simple-installation single LCD projector with the dustproof structure is characterized in that the front lens and the rear lens are both Fresnel lenses.

The optical device in the single-chip projector is divided into two components and is respectively provided with the dustproof shell, so that the optical device is protected by the two layers of dustproof protection of the projector base shell and the dustproof shell, external dust can be effectively isolated, and the normal work of the optical device is protected. In addition, in the running water production process, two separable components are produced, and at last, only two components are required to be directly fixed inside the base of the projector for final assembly, so that the production process of the running water line is simplified, the smoothness of the production of the running water line is facilitated, and the production efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an exploded view of the present invention;

FIG. 2 is an exploded view of the light projecting assembly;

FIG. 3 is a schematic view of the internal structure of the light projecting assembly;

FIG. 4 is an exploded view of the refractive element;

FIG. 5 is a schematic diagram of the internal structure of the refraction assembly.

Wherein, in the figures, the respective reference numerals:

1. a face cover;

2. a light projecting component; 201. a first dust-proof housing; 202. a first dust cover; 203. a heat sink; 204, an LED light source; 205. a light reflecting cup; 206. an outer frame; 207. a front lens;

3, PCBA board;

4. a refractive component; 401. a second dust cover; 402. a first dust-proof housing; 40201. a first slot; 40202. a second slot; 403. a positioning frame; 404, an LCD display screen; 405. a rear lens; 406. a reflective mirror;

5. a projection lens;

6. a base.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "fixed" or "disposed" or "connected" to another element, it can be directly or indirectly located on the other element. The terms "upper", "lower", "front", "rear", "vertical", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

The utility model provides a take single LCD projecting apparatus of simple and easy installation of dustproof construction, as shown in figure 1, includes casing, light projecting component 2 and refraction subassembly 4, and light projecting component 2 and refraction subassembly 4 are fixed in the inside of casing, and the outside of light projecting component 2 and refraction subassembly 4 all is provided with dust cover, and the light that sends in the light projecting component 2 is launched from the casing through refraction subassembly 4.

The casing includes base 6 and face lid 1, is provided with a plurality of lock grooves on the base 6, is provided with a plurality of lock keys on the face lid 1, and lock groove and lock key lock connect for face lid 1 is fixed on base 6. The surface of the base 6 and the face cover 1 is provided with a plurality of holes, such as lens holes, heat dissipation holes, connection holes for various external devices, and the like. The PCBA board 3 is further arranged inside the shell, and the PCBA board 3 is connected with the LED light source 204 in the light projecting component 2 and the LCD display screen 404 in the refraction component 4, so that an image to be projected is displayed on the LCD display screen 404, and the projection lens 5 can project the image.

The dustproof shell comprises a dustproof shell body and a dustproof cover, the dustproof shell body is connected with the dustproof cover in a buckling mode, and an optical device of a corresponding component is arranged inside the dustproof shell body. Be provided with the hank ear on the dust cover, be provided with the screw hole on the hank ear, dust cover passes through the fix with screw inside the casing. So when light projecting component 2 and refraction subassembly 4 have been assembled, when assembling as the part of final assembly with both, only need with light projecting component 2 and refraction subassembly 4 pass through the fix with screw in the inside of base 6, then installation PCBA board 3, be connected PCBA board 3 and LCD display screen 404, finally with face lid 1 with the base 6 be connected can, shortened the assembly line of final assembly production greatly for the final assembly becomes simple swift.

As shown in fig. 2 and 3, the light projection assembly 2 includes, from top to bottom, a first dust-proof housing 201, a first dust-proof cover 202, a heat sink 203, an LED light source 204, a reflective cup 205, an outer frame 206, and a front lens 208, wherein an optical device is disposed in a space surrounded by the first dust-proof housing 201 and the second dust-proof cover 401, the heat sink 203 dissipates heat of the LED light source 204, and the reflective cup 205 and the front lens 208 are fixed by the outer frame 206. The light emitted from the LED light source 204 is collected by the reflective cup 205, passes through the front lens 208, and is emitted to the refraction component 4,

the LED light source 204 is a surface light source, which includes a substrate and a plurality of LED beads, and the surface light source has more uniform light than a point light source, and the light is more directly transmitted than various display screens, lenses, reflectors 406, and other planes. The reflecting cup 205 covers the LED light source 204, the reflecting cup 205 is shaped like a frustum of a pyramid, and the reflecting cup 205 collects light emitted by the LED light source 204 and increases the illumination area, so that the illumination area is consistent with the areas of the front lens 208, the rear lens 405, the LCD display screen 404, and the like, so that each position of the LCD display screen 404 is irradiated by the light to form a projection. The bottom end of the reflective cup 205 is provided with a bending part.

The outer frame 206 is arranged outside the reflective cup 205, and the height of the outer frame is half of that of the reflective cup 205. The inner wall of the outer frame 206 is provided with a plurality of vertical damping keys, and the reflection cup 205 is clamped inside the outer frame 206 through the damping keys so as to fix the relative positions of the reflection cup and the outer frame. First dust casing 201 inner wall bottom is provided with first fixed slot, and the outer wall bottom of frame 206 is provided with the boss, inside the first fixed slot of boss and the embedding of portion of bending for frame 206, anti-light cup 205 are fixed on dust casing. The bottom of the first dust-proof housing 201 is provided with a clamping groove, and the front lens 208 is inserted into the clamping groove and fixed at the bottom of the first dust-proof housing 201.

The light projecting component 2 is further provided with a temperature control switch and a radiator 203, the radiator 203 comprises a radiating fin, and the LED light source 204 is tightly attached to the radiating fin to dissipate heat generated by the LED light source 204. The temperature control switch controls the LED light source 204 to be turned on and off, when the temperature of the LED light source 204 rises to a certain value, the temperature control switch is turned on to turn off the LED light source 204 and stop working, meanwhile, the radiator 203 still works to dissipate heat of the LED light source 204 and reduce the temperature, and when the temperature reaches a certain proper temperature, the temperature control switch connects a circuit of the LED light source 204, and if the machine still supplies power at the moment, the LED light source 204 is turned on to work.

As shown in fig. 4 and 5, the refractive assembly 4 includes, from top to bottom, a second dust-proof housing 402, a second dust-proof cover 401, a reflective mirror 406, a rear lens 405, an LCD display 404, and a positioning frame 403. The light emitted by the light projecting component 2 passes through the LCD display screen 404 and the rear lens 405 in sequence, is reflected by the reflector 406 and then is emitted from the refraction component 4, and is emitted through the projection lens 5 to form projection.

The bottom of the second dust case 402 is provided with a second fixing groove, and the LCD display screen 404 is inserted into the second fixing groove and fixed in the second fixing groove by the edge of the second dust case 402. The inner wall of the second dustproof housing 402 is provided with a first slot 40201 and a second slot 40202, the reflector 406 is inserted into the first slot 40201 for fixation, and the rear lens 405 is inserted into the second slot 40202 for fixation. The rear lens 405 is provided with a protruding key by which it is fixed to the second dust case 402. The angle between the reflective mirror 406 and the rear lens 405 and the angle between the reflective mirror 406 and the LCD screen 404 are 45 °.

The side of second dust cover 402 is provided with the lens hole, is provided with the internal thread on the lens hole, is provided with the external screw thread on the projection lens 5 for second dust cover 402 passes through threaded connection with projection lens 5. The included angle between the projection lens 5 and the LCD screen 404 is 90 °, and light passing through the LCD screen 404 is reflected by the mirror surface of the reflector 406 and then projected out from the projection lens 5.

The front lens 208 and the rear lens 405 are fresnel lenses.

The optical device in the single LCD projector is divided into two components, the two components are respectively provided with the dustproof shell, and various optical devices are fixed in the dustproof shell by utilizing various mechanical grooves and protrusions arranged in the dustproof shell, so that the structure is simple and compact, other connecting and fixing parts are not needed, the cost is low, the production efficiency is improved, external dust and pollution can be effectively isolated, the normal work of the projector is ensured, the internal optical devices are effectively protected, and the service life of the projector is prolonged.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a take single LCD projecting apparatus of simple and easy installation of dustproof construction, its characterized in that, includes casing, light projection subassembly and refraction subassembly, the light projection subassembly with the refraction subassembly is fixed the inside of casing, the light projection subassembly with the outside of refraction subassembly all is provided with dust cover, the light that sends in the light projection subassembly is through the refraction subassembly certainly the casing jets out.

2. The easy-to-mount single LCD projector with a dust-proof structure according to claim 1, wherein the dust-proof housing includes a dust-proof housing and a dust-proof cover, and the dust-proof housing and the dust-proof cover are fastened together.

3. The simple installation single LCD projector with the dustproof structure as claimed in claim 1, wherein a PCBA board is further arranged inside the shell, and the PCBA board is connected with the LCD display screen in the refraction component.

4. The simple-to-mount single LCD projector with the dustproof structure as claimed in claim 1, wherein the light projecting assembly comprises an LED light source, a reflective cup and a front lens, and light emitted from the LED light source is collected by the reflective cup and transmitted to the refraction assembly through the front lens.

5. The easy-to-mount single LCD projector with dust-proofing structure as claimed in claim 4, wherein said LED light source is a surface light source.

6. The LCD projector with the dustproof structure for the simple installation unit as claimed in claim 4, wherein a bent portion is disposed at the bottom end of the reflective cup, a first fixing groove is disposed at the bottom of the inner wall of the dustproof housing, a boss is disposed at the bottom of the outer wall of the outer frame, and the boss and the bent portion are embedded in the first fixing groove, so that the outer frame and the reflective cup are fixed on the dustproof housing.

7. The easy-to-mount single LCD projector with a dustproof structure according to claim 1, wherein the light projection unit is provided with a temperature control switch and a heat sink.

8. The simple LCD projector with a dustproof structure as claimed in claim 1, wherein the refraction component comprises a rear lens, an LCD display screen and a reflective mirror, and light emitted by the light projecting component passes through the LCD display screen and the rear lens in sequence and is emitted from the refraction component after being reflected by the reflective mirror.

9. The LCD projector with the dustproof structure of claim 8, wherein the rear lens is parallel to the LCD screen, and an included angle between the reflective mirror and the rear lens and between the reflective mirror and the LCD screen is 45 °.

10. The LCD projector with the dustproof structure, as claimed in claim 8, wherein the refraction component is connected with the projection lens through a thread, and light emitted by the light projection component is emitted from the projection lens after passing through the refraction component.