CN215576071U

CN215576071U - Short-distance projector and display system thereof

Info

Publication number: CN215576071U
Application number: CN202121460554.1U
Authority: CN
Inventors: 邓辉斌
Original assignee: Shenzhen Yuande Education Technology Co ltd
Current assignee: Shenzhen Yuande Education Technology Co ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-01-18
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a short-distance projector and a display system thereof, comprising a projection shell, a light-emitting component, a display component, a mirror image component and a lens; the projection shell is detachably connected with the light-emitting assembly, the display assembly, the mirror image assembly and the lens respectively; the display assembly is positioned in the light emitting direction of the light emitting assembly and is detachably connected with the light emitting assembly; the lens is detachably connected with the display assembly, and the plane of the lens is vertical to the plane of the display assembly; the mirror image assembly is detachably connected with the display assembly, and the mirror image assembly is detachably connected with the display assembly and the lens respectively, so that the plane where the mirror image assembly is located, the plane where the display assembly is located and the plane where the lens is located are intersected with each other. The projector and the display system can more conveniently display the image to be displayed.

Description

Short-distance projector and display system thereof

Technical Field

The utility model relates to the technical field of projectors, in particular to a short-distance projector and a display system thereof.

Background

The display screens of the existing handheld terminals such as learning machines and flat panels emit light in a self-luminous manner, and the most common liquid crystal screen is taken as an example, and the liquid crystal screen uses a white light background which is realized by matching a blue LED with yellow fluorescent powder. But the wavelength of blue light is harmful to the human eye.

In addition, in order to increase the definition of the screen, the existing liquid crystal display screen uses a polishing technology, so that the surface of the whole display screen looks like glass and is more textured, but the light reflection is increased. Therefore, the user is more easily injured by light when watching, the glasses are more tired, and the eyesight is reduced for a long time.

The light emitted from the projector is diffusely reflected and thus has relatively eye-friendly characteristics. However, most of the existing projectors are parallel projection, the projection interface is generally a vertical projection screen, and the projector is located on a plane at a certain distance from the projection screen and then performs projection. This requires a certain distance for projection and is heavy, and thus has disadvantages in view of viewing portability and environmental suitability compared to existing learning machines and tablets.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the existing projector is not enough in portability and environment applicability, and provides a short-distance projector and a display system thereof aiming at the defects of the prior art.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

a short-range projector, comprising:

the projection device comprises a projection shell, a light-emitting component, a display component, a mirror image component and a lens;

the projection shell is detachably connected with the light-emitting assembly, the display assembly, the mirror image assembly and the lens respectively;

the display assembly is positioned in the light emitting direction of the light emitting assembly and is detachably connected with the light emitting assembly;

the lens is detachably connected with the display assembly, and the plane of the lens is vertical to the plane of the display assembly;

the mirror image assembly is detachably connected with the display assembly, and the mirror image assembly is detachably connected with the display assembly and the lens respectively, so that the plane where the mirror image assembly is located, the plane where the display assembly is located and the plane where the lens is located are intersected with each other.

The short-range projector, wherein the light emitting assembly comprises a light source and a light flux;

the light flux is in a bell-jar shape and comprises a top part, a bottom part and a transition area;

the top of light flux with the light source buckle is connected, the bottom with projection casing detachable connects.

The short-distance projector comprises a display assembly, a display screen and a front mirror, wherein the display assembly comprises a rear mirror, a display screen and a front mirror;

the rear mirror is positioned in the light emitting direction of the light emitting component and is detachably connected with the light emitting component;

the display screen is positioned between the rear film mirror and the front film mirror;

the front mirror is detachably connected with the lens and the mirror image assembly respectively.

The short-distance projector, wherein, the short-distance projector still includes radiator unit.

The short-range projector, wherein the fan comprises a first fan and/or a second fan;

the first fan is positioned at the bottom of the light-emitting component and faces the lens, and when the first fan works, air is blown to the lens; and/or

The second fan is detachably connected with the back of the mirror image assembly, when the second fan works, the second fan blows air to the back of the mirror image assembly, and the back of the mirror image assembly is the surface of the mirror image assembly, which does not reflect light.

The short-distance projector is characterized in that the heat sink is detachably connected with the back of the light source, wherein the back of the light source is a part of the light source which does not emit light.

The short-distance projector, wherein the mirror assembly comprises a mirror and a fixed bracket;

the fixed bracket comprises a connecting groove, a fixed groove and a fixed piece;

the connecting groove is detachably connected with the display assembly, and the fixing groove is detachably connected with the reflector;

the fixed bracket is detachably connected with the projection shell;

the fixing piece is detachably connected with the lens.

The short-range projector, wherein the projection housing comprises a projection enclosure and a projection mount;

the projection support is used for fixing the projection shell, and the projection shell is detachably connected with the light-emitting component, the display component, the mirror image component and the lens respectively.

The utility model also provides a display system which comprises a projection screen and the short-distance projector.

Has the advantages that: compared with the prior art, the utility model provides a short-distance projector and a display system thereof, wherein the short-distance projector can reduce the projection distance. And mirror image subassembly, lens and display element intersect each other, and the lens is perpendicular with the display element, therefore this short distance projecting apparatus can be in carrying out the projection to desktop isoplanar, and is littleer to the requirement of environment, also makes things convenient for the user to carry out the desktop operation.

Drawings

Fig. 1 is a schematic structural diagram of a short-distance projector provided by the present invention.

Fig. 2 is a schematic light diagram of a short-range projector according to the present invention.

The meanings marked in the drawings are as follows:

110, a first housing; 120, a second housing; 200, a light emitting assembly; 210, a light source; 220, light flux; 310, rear mirror; 320, a display screen; 330, front mirror; 410, a mirror; 420, fixing the bracket; 421, connecting grooves; 422, fixing grooves; 423, a fixing piece; 500, a lens; 510, a lens; 520, a mirror housing; 611, a first fan; 612, a second fan; 620, a heat sink.

Detailed Description

The present invention provides a short distance projector and a display system thereof, and in order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The conventional projector is insufficient in portability and applicability to the environment. A short-range projector is proposed for this purpose.

For example, the embodiment of the utility model can be applied to places with large limitation on projection environments, such as study rooms, teaching rooms, families and the like.

It should be noted that the above application scenarios are only presented to facilitate understanding of the present invention, and the embodiments of the present invention are not limited in any way in this respect. Rather, embodiments of the present invention may be applied to any scenario where applicable.

The following description of the embodiments will further explain the present invention by referring to the figures.

As shown in fig. 1, the present embodiment provides a short distance projector. The short distance projector includes a projection housing, a light emitting assembly 200, a display assembly, a mirror assembly, and a lens 500.

The projection housing is used for fixing various components in the short-distance projector, including the light emitting component 200, the display component, the mirror image component and the lens 500. In order to realize the detachability of the instrument, the projection housing is detachably connected with the light-emitting assembly 200, the display assembly, the mirror assembly and the lens 500.

The light emitting assembly 200 serves as a light source 210 for emitting light outwards. As shown in fig. 1, the components of the Light Emitting assembly 200 for Emitting Light may be an LED (Light Emitting Diode) lamp, a high frequency fluorescent lamp, a Light halogen lamp, etc.

The display assembly is located in the light emitting direction of the light emitting assembly 200 and detachably connected to the light emitting assembly 200. The display component is used for displaying the image to be projected. The Display module may employ an existing Display screen 320, such as an LCD (liquid crystal Display), as a component for implementing a Display function.

The lens 500 is detachably connected to the display module, and a plane of the lens 510 of the lens 500 is perpendicular to a plane of the display module. The lens 500 includes a lens housing 520 and a lens 510, and the main function of the lens 500 is to emit light for imaging, guide the light source 210 projected into the lens 510 to the outside, and present the light on an imaging medium in an external environment.

The mirror image component is detachably connected to the display component, and the mirror image component is detachably connected to the display component and the lens 500, respectively, so that a plane where the mirror image component is located, a plane where the display component is located, and a plane where the lens 510 is located intersect with each other, that is, the planes of the mirror image component, the display component, and the lens can form a triangle. The mirror assembly is used to image the input pattern, resulting in a mirror image that can be imaged at a stretched projection distance.

When the short distance projector operates, the light emitting element 200 starts emitting light, and the display element starts displaying an image to be projected. The light from the light emitting element 200 passes through the display element and enters the mirror element. The mirror image component can carry out mirror surface imaging on the image displayed by the penetrating display component to obtain a mirror image. The mirror image is then projected into the lens 500, and the lens 500 then derives and projects the image. In the imaging process in the mirror image assembly, the projection distance is drawn, so that the projection distance is shortened, and the projection effect of remote projection is achieved.

Further, the projection housing comprises a projection housing and a projection bracket, wherein the projection bracket is used for fixing the projection housing. The shape of the projection bracket can be changed according to the requirements of the use environment. For example, when the projection is required to be projected on a desktop, the projection support is a columnar support; if a form similar to that of a general projector is intended for projection, the projection stand is a stand-type stand. To facilitate disassembly of the projection housing, the projection housing includes a first housing 110 and a second housing 120. The first housing 110 and the second housing 120 include portions, such as grooves, screw holes, etc., for detachable connection with elements in the projector. The first housing 110 is primarily for securing above these elements, while the second housing 120 is primarily for securing below these elements. Referring to fig. 1, the first housing 110 has a plurality of grooves and screw holes, wherein the heat sink 620, the light emitting device 200 and the display device are connected by the grooves, and the screw holes are detachably connected to the fan. The second housing 120 is detachably connected to the fan through a screw hole and a locking position, and is detachably connected to the display module and the lens 500 through a protrusion and a groove.

Further, in the present embodiment, the light emitting assembly 200 includes a light source 210 and a light passage 220. The light source 210 is a component that directly provides the light source 210. The light flux 220 is used for light condensing and refracting, and disperses the light source 210 with a small area to distribute and compare with the larger display elements of the light source 210. The light path 220 is thus shaped as a bell jar including a top, a bottom and a transition region. The top of the light passage 220 is snap-fit connected with the light source 210 to fix the light source 210. The bottom of the light tunnel 220 is removably connected to the projection housing.

The display assembly includes a rear mirror 310, a display screen 320 and a front mirror 330, which are arranged from small to large from the distance with the light emitting assembly 200, and the rear mirror 310, the display screen 320 and the front mirror 330 are arranged in this order. The rear mirror 310 is used to scatter the light of the light emitting assembly 200, so as to uniformly project the light onto the display screen 320. And the display screen 320 is used to display an image to be projected. The front mirror 330 is used to project a pattern into the mirror assembly that presents bright colors to the light passing through the display screen 320.

Further, since the projector requires support for the light source 210, the light itself is thermally charged. With the height of the temperature, aspects such as displaying images and the like are influenced to a certain extent. In this embodiment, therefore, the short-range projector further includes a heat dissipation assembly 600.

The heat dissipation assembly 600 includes a fan, heat sink 620, or other heat dissipation device. The present embodiment is described with reference to a fan and a heat sink 620 as an example. The fans include a first fan 611 and a second fan 612. The first fan 611 is located at the bottom of the light emitting assembly 200 and faces the lens 500, and when the first fan 611 operates, air is blown to the lens 500. The second fan 612 is detachably connected to the back surface of the mirror image assembly, and when the second fan 612 works, the second fan 612 blows air to the back surface of the mirror image assembly, wherein the back surface of the mirror image assembly is a surface of the mirror image assembly which does not reflect light. Both the lens 500 and the mirror image element are exposed to the projected light for a long time, and thus generate heat strongly during long-term operation. In addition, a heat sink 620 is disposed on the back of the light emitting assembly 200, where the non-light emitting portion of the light source 210 is disposed, the heat sink 620 is detachably connected to the back of the light source 210, and when the light source 210 operates, the heat sink 620 instantly dissipates the heat generated by the light source 210. Thereby reducing the temperature of the whole instrument during operation.

Further, the mirror assembly includes a mirror 410 and a fixing bracket 420. The reflecting mirror 410 is used for reflecting and projecting an image displayed by the display assembly into the lens 500, thereby realizing imaging. The fixing bracket 420 functions to couple the reflecting mirror 410 with other elements and to stabilize the reflecting mirror 410. It includes a connection groove 421, a fixed groove 422 and a fixing piece 423, wherein, the connection groove 421 is detachably connected with the display component, and the fixed groove 422 is detachably connected with the reflector 410; the fixed bracket 420 is detachably connected with the projection housing; the fixing member 423 is detachably coupled to the lens 500.

Referring to fig. 2, when the short distance projector operates, the light source 210 starts emitting light and the diffusion of light is performed through the light flux 220. Then the light passes through the rear film mirror 310 so as to uniformly penetrate through the display screen 320, the pattern in the display screen 320 is projected onto the front film mirror 330, the front film mirror 330 processes the light to present a bright screen picture, the light is projected onto the reflector 410, the mirror surface of the reflector 410 is imaged, and finally the mirror image is projected through the lens 500 to realize short-distance projection. The black dots in fig. 2 indicate the relative positions of the mirror images for a certain ray. The short-distance projector can project a 14-inch clear 800 × 480 resolution image at a distance of o 30 cm.

On the basis of the short-distance projector, the embodiment further provides a display system, which includes a projection screen and the short-distance projector. The projection screen includes a desktop, wall, or other imaging surface.

Claims

1. A short-range projector, characterized in that the short-range projector comprises: the projection device comprises a projection shell, a light-emitting component, a display component, a mirror image component and a lens;

2. The short range projector of claim 1 wherein the light emitting assembly comprises a light source and a light flux;

3. The short range projector of claim 1 wherein the display assembly comprises a rear mirror, a display screen, and a front mirror;

4. The short-range projector of claim 2 further comprising a heat sink assembly.

5. The short range projector of claim 4 wherein the heat sink assembly comprises a number of heat dissipation devices, the heat dissipation devices comprising a fan and/or a heat sink.

6. A short-range projector as claimed in claim 5, characterized in that the fan comprises a first fan and/or a second fan;

7. The short range projector of claim 5 wherein the heat sink is removably attached to a back portion of the light source, wherein the back portion of the light source is a portion of the light source that is not illuminated.

8. The short range projector of claim 1 wherein the mirror assembly comprises a mirror and a fixed bracket;

the fixed bracket is detachably connected with the projection shell;

the fixing piece is detachably connected with the lens.

9. The short range projector of claim 1 wherein the projection housing comprises a projection enclosure and a projection mount;

10. A display system comprising a projection screen and a short-range projector according to any one of claims 1 to 9.