CN211627990U

CN211627990U - Projector

Info

Publication number: CN211627990U
Application number: CN202020123466.1U
Authority: CN
Inventors: 刘宪; 唐华彬; 余新
Original assignee: Cineapro Laser Cinema Technology Beijing Co ltd
Current assignee: Cineapro Laser Cinema Technology Beijing Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-02
Anticipated expiration: 2030-01-19
Also published as: WO2021143553A1

Abstract

The application discloses a projector, which comprises a projector main body, a lens and a lens, wherein the projector main body is provided with an opening, and the lens of the projector is arranged in a cavity of the projector main body and extends to the outer side from the opening; a front cover assembly fixedly connected with the projector main body; the front cover assembly comprises a hollow cylinder extending outwards, and the lens is accommodated in the hollow cylinder of the front cover assembly; the front cover assembly further comprises a transparent body, and the transparent body is arranged at the front end of the hollow cylinder and used for transmitting emergent light of the lens. The projector can reduce the pollution of impurities such as dust to the lens, and improve the imaging quality, reliability and service life of the projector.

Description

Projector

Technical Field

The application relates to the technical field of optical part dust prevention, in particular to a projector.

Background

The lens is a key part for imaging and projection of the projector, belongs to precision equipment, has certain requirements on the temperature of a use environment, moderate degree and cleanliness, and particularly has the effect that dust and dust can seriously reduce the display brightness of the projector and influence the service life of internal glass components.

The inventor of the application finds that the lens of the cinema projector in the current market directly extends out of the whole projector shell and is exposed in the external environment, and dust can be directly attached to the light-emitting lens of the lens in the long-term research and development process. With the lapse of time, the image quality, contrast and brightness of the projector will gradually decrease, and if the dust attached to the surface of the optical element is too much and even enters the inner cavity of the lens, the situation of burning out the optical element inside the lens is likely to occur, and the reliability is seriously affected.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application mainly solved provides a projector to reduce the pollution of impurity such as dust to the lens, can improve projector's formation of image quality, reliability and life-span.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided a projector including: the projector comprises a projector body, a lens and a control unit, wherein the projector body is provided with an opening, and the lens of the projector is arranged in the cavity of the projector body and extends to the outer side from the opening; a front cover assembly fixedly connected with the projector main body; the front cover assembly comprises a hollow cylinder extending outwards, and the lens is accommodated in the hollow cylinder of the front cover assembly; the front cover assembly further comprises a transparent body, and the transparent body is arranged at the front end of the hollow cylinder and used for transmitting emergent light of the lens.

The diameter of the hollow cylinder accommodating space is related to the diameter of the lens and the rotation amplitude of the lens.

The transparent body is sealed and stuck to the hollow cylinder through the colloid, and forms a sealed space with the hollow cylinder.

Furthermore, the transparent body is fixed on the hollow cylinder through a spring plate.

In one embodiment, the transparent body is AR glass.

In one embodiment, the front cover assembly is secured to the projector body by a snap fit.

In one embodiment, the edge of the front cover assembly is provided with a screw hole, and the front cover assembly is fixedly connected to the projector main body through the screw hole and a screw.

Furthermore, a heat dissipation air duct is arranged between the lens extending out of the projector main body and the front cover assembly.

The beneficial effects of the embodiment of the application are that: the projector lens is arranged in the projector main body and is coated by the front cover assembly, so that the pollution of impurities such as dust to the lens can be effectively reduced, and the imaging quality, the reliability and the service life of the projector are improved.

Drawings

FIG. 1 is an exploded view of the projector of the present application;

fig. 2 is a schematic view of the structural assembly of the projector of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Dust prevention of optical parts such as a lens is important, and if excessive dust adheres to the surface of the lens and even enters a cavity inside the lens, the situation that the optical parts inside the lens are burnt out is likely to be caused, and reliability is seriously affected. In order to solve the dustproof problem of the lens, the application provides a projector. The projector has the advantages of simple structure, good dustproof effect, and capability of improving the reliability and the service life of the lens.

Referring to fig. 1, fig. 1 is an exploded view of a projector according to the present application, and the projector of the present embodiment includes a projector body 11 and a front cover assembly 12.

The projector main body 11 is provided with an opening, and the lens 111 is placed in the cavity of the projector main body 11 and extends outward from the opening of the projector main body, and the lens 111 can be placed into the projector main body 11 or removed from the projector main body 11 through the opening. The front cover assembly 12 and the projector body 11 are fixedly connected to the opening, and the front cover assembly 12 covers the lens 111. As shown in the projector assembly diagram of fig. 2, the lens 111 is completely covered in the accommodating space formed by the projector body 11 and the front cover assembly 12, so as to achieve the dustproof effect.

Further, the front cover assembly 12 includes a hollow cylinder 121 extending outward, and the lens 11 is accommodated in the hollow cylinder 121; the front cover assembly 12 further includes a transparent body 122 disposed at the front end of the hollow cylinder 121 for transmitting the outgoing light from the lens.

It should be noted that the accommodating space of the hollow cylinder 121 can accommodate the turning direction of the lens 11 during fine adjustment, for example, when the turning range of the lens is ± 4mm, the diameter of the accommodating space of the hollow cylinder 121 should be increased by more than 4mm on the basis of normally accommodating the lens.

In a specific embodiment, the transparent body 122 is AR glass, which can effectively reduce the reflection of the glass itself, increase the transmittance of the glass, and make the light emitted from the lens more colorful and real after passing through the glass.

In addition, in order to form a better sealing environment between the transparent body 122 and the hollow cylinder 121, the transparent body 122 is bonded to the hollow cylinder 121 by means of glue dispensing. Further, in order to ensure the stability of the transparent body 122, the transparent body 122 is fixed on the hollow cylinder 121 by using the elastic sheet. Thereby forming a sealed and reliable environmental space between the front cover assembly and the projector body.

Since the transparent body 122 can transmit the image beam emitted from the lens 11, the dustproof structure does not affect the normal operation of the lens 11. The shape of the transparent body 122 may be a circle, an ellipse, a square, etc., as long as the light beam emitted from the lens 11 can be transmitted, and is not particularly limited herein.

The front cover assembly 12 is fixedly attached to the projector body 11. in one embodiment, the front cover assembly 12 is snap-fit to the projector body 11 to facilitate removal of the front cover assembly 12.

In another embodiment, screw holes are formed on the edge of the front cover assembly 12, and the front cover assembly 12 is fixed to the projector body 11 by means of the screw holes and screws, which can make the connection between the front cover assembly 12 and the projector body 11 more stable.

In alternative embodiments, the front cover assembly 12 may be directly bonded to the projector body 11, which may result in a lower cost and a simpler assembly process of the projector body 10 and the front cover assembly 20.

In a preferred embodiment, several heat dissipation holes are formed in the side wall of the projector body 11, and a special channel 13 is formed to facilitate heat dissipation of the lens, thereby further improving the service life of the projector.

Unlike the prior art, the projector of the present embodiment can reduce the contamination of the lens by impurities such as dust, thereby improving the image quality, reliability and life of the projector. In addition, the hollow cylinder is arranged on the front cover assembly of the embodiment, so that the lens can be completely covered, the dustproof effect is improved, and the visual effect is higher

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A projector, comprising:

the projector comprises a projector body, a lens and a control unit, wherein the projector body is provided with an opening, and the lens of the projector is arranged in the cavity of the projector body and extends to the outer side from the opening;

a front cover assembly fixedly connected with the projector main body; the front cover assembly comprises a hollow cylinder extending outwards, and the lens is accommodated in the hollow cylinder of the front cover assembly; the front cover assembly further comprises a transparent body, and the transparent body is arranged at the front end of the hollow cylinder and used for transmitting emergent light of the lens.

2. The projector as claimed in claim 1, wherein the diameter of the hollow cylinder receiving space is related to the diameter of the lens and the rotation amplitude of the lens.

3. The projector as claimed in claim 1, wherein the transparent body is sealed and adhered to the hollow cylinder by a sealant to form a sealed space with the hollow cylinder.

4. A projector as claimed in claim 3, wherein the transparent body is further secured to the hollow cylinder by clips.

5. A projector as claimed in claim 1, characterized in that the transparent body is AR glass.

6. The projector as defined in claim 1 wherein the front cover assembly is secured to the projector body by a snap fit.

7. The projector as claimed in claim 1, wherein the front cover assembly has screw holes formed at an edge thereof, and the front cover assembly is fixedly coupled to the projector body by the screw holes and screws.

8. The projector as claimed in claim 1, wherein a heat dissipation duct is provided between the lens projecting from the projector body and the front cover assembly.