CN212694230U

CN212694230U - Projector with a light source

Info

Publication number: CN212694230U
Application number: CN202021335804.4U
Authority: CN
Inventors: 余谦
Original assignee: Efun Display Technology Shenzhen Co ltd
Current assignee: Efun Display Technology Shenzhen Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-12
Anticipated expiration: 2030-07-08

Abstract

The utility model provides a projector, including optical device, radiator unit and heat-conducting component. The optical device comprises a shell, an optical machine, a reflection structure and a digital micromirror wafer, wherein the reflection structure can project emergent light of the optical machine to a projection screen; the heat dissipation assembly comprises a plurality of heat dissipation fins which are connected with the heat conduction plate and positioned outside the accommodating cavity; the heat conduction assembly comprises a heat pipe, a first heat conduction gasket connected to one end of the heat pipe and a second heat conduction gasket connected to the other end of the heat pipe, the first heat conduction gasket is connected to the digital micromirror wafer and the optical machine, and the second heat conduction gasket is connected to one side, facing the optical machine, of the heat conduction plate. The projector can prevent dust from being accumulated on the digital micromirror wafer and the optical machine, thereby enhancing the dustproof effect and prolonging the service life of the digital micromirror wafer and the optical machine.

Description

Projector with a light source

Technical Field

The utility model belongs to the technical field of projection equipment, especially, relate to a projector.

Background

The projector is a large-screen electronic product capable of displaying various video sources, and a DLP (digital light processing) projector is commonly used in the market at present, but the projector has the defect of poor dustproof effect, a fan is needed to reduce the temperature of an optical part, and dust can be attached to the optical machine when the projector is used for a long time or the use environment is poor, so that the brightness of the machine is reduced, and the service life of the machine is also influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a projector aims at solving the not good technical problem of DLP projector dustproof effect among the prior art.

The utility model discloses a realize like this, a projector, include:

the optical device comprises a shell, an optical machine, a reflecting structure and a digital micromirror wafer, wherein the reflecting structure is arranged opposite to the optical machine, the digital micromirror wafer is connected to the optical machine, the reflecting structure can project emergent light of the optical machine to a projection screen, the shell comprises an upper cover, a bottom shell and a heat conducting plate which is connected to the bottom shell and can conduct heat, an accommodating cavity is formed by the upper cover, the bottom shell and the heat conducting plate together, the optical machine, the reflecting structure and the digital micromirror wafer are all located in the accommodating cavity, and the optical machine is connected to the bottom shell;

the heat dissipation assembly comprises a plurality of heat dissipation fins which are connected with the heat conduction plate and positioned outside the accommodating cavity;

the heat conduction assembly comprises a heat pipe, a first heat conduction gasket connected to one end of the heat pipe and a second heat conduction gasket connected to the other end of the heat pipe, wherein the first heat conduction gasket is connected to the digital micromirror wafer and the optical machine, and the second heat conduction gasket is connected to one side, facing the optical machine, of the heat conduction plate.

In one embodiment, the upper cover is provided with a light outlet, and the upper cover is provided with a light-transmitting mirror at the light outlet.

In one embodiment, the heat dissipation assembly further comprises an air blowing member connected to the housing and located outside the accommodating cavity, and the air blowing member is used for generating air flow passing through the heat dissipation fins.

In one embodiment, the blowing direction of the blowing member is parallel to the heat conductive plate.

In one embodiment, the air blowing member is a fan.

In one embodiment, the heat dissipating fins extend in the air flow direction.

In one embodiment, the projector further includes a protective shell covering the heat dissipation assembly, and the protective shell has an air inlet and an air outlet.

In one embodiment, the projector further includes a screen plate, and the screen plate covers the air inlet.

In one embodiment, the air blowing member is disposed at the air outlet.

In one embodiment, two blowing members are provided, and the connecting line of the two blowing members is perpendicular to the flowing direction of the airflow.

The utility model discloses technical effect for prior art is: this projecting apparatus is through setting up the casing for the ray apparatus can be located the holding intracavity, and the casing is including the heat-conducting plate that can heat conduction, and the heat of digital micro mirror wafer and ray apparatus can be absorbed to first heat-conducting gasket, and pass through heat pipe conduction to second heat-conducting gasket with the heat, second heat-conducting gasket passes through the heat-conducting plate with heat conduction to radiating fin, in order to realize the heat dissipation of holding intracavity ray apparatus and digital micro mirror wafer, heat-conducting gasket has played the effect that increase area of contact improves heat conduction efficiency. The casing can keep apart digital micromirror wafer and ray apparatus and radiator unit, and air current through radiator unit just can not influence digital micromirror wafer and ray apparatus, and digital micromirror wafer and ray apparatus just can not receive the dust influence in the air current yet, and digital micromirror wafer and ray apparatus just can reach the radiating effect when keeping apart with radiator unit like this, prevent that the dust from piling up on digital micromirror wafer and ray apparatus, have strengthened dustproof effect, have prolonged the life-span of digital micromirror wafer and ray apparatus.

Drawings

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

Fig. 1 is a perspective view of a projector according to an embodiment of the present invention;

FIG. 2 is a partial block diagram of the projector of FIG. 1 from one perspective;

fig. 3 is a partial block diagram of the projector of fig. 1 from another perspective.

Description of reference numerals:

11. a housing; 111. an upper cover; 112. a bottom case; 113. a heat conducting plate; 12. an optical machine; 13. a reflective structure; 20. a heat dissipating component; 21. a heat dissipating fin; 22. a blower member; 30. a heat conducting component; 31. a heat pipe; 32. a first thermally conductive pad; 33. a second thermally conductive pad; 40. and (4) a protective shell.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 3, an embodiment of the present invention provides a projector, including an optical device, a heat dissipation assembly 20 and a heat conduction assembly 30.

Referring to fig. 1 to 3, the optical device includes a housing 11, an optical engine 12, a reflective structure 13 disposed opposite to the optical engine 12, and a digital micromirror chip connected to the optical engine 12, wherein the reflective structure 13 is capable of projecting an emergent light of the optical engine 12 to a projection screen, the housing 11 includes an upper cover 111, a bottom case 112, and a heat conducting plate 113 connected to the bottom case 112 and capable of conducting heat, the upper cover 111, the bottom case 112, and the heat conducting plate 113 together form a receiving cavity, the optical engine 12, the reflective structure 13, and the digital micromirror chip are all located in the receiving cavity, and the optical engine 12 is connected to the bottom case 112. Wherein, light-emitting hole has been seted up to upper cover 111, and upper cover 111 is equipped with the printing opacity mirror in light-emitting hole department, and the lens of throwing light can make the holding chamber become inclosed cavity, prevents that outside dust from getting into the holding intracavity.

The optical machine 12 is used for generating three-color laser beams and integrating the three-color laser beams to form projection beams carrying projection information, the optical machine 12 is provided with a lens, the lens transmits the projection beams, and the projection beams are reflected by a reflecting structure which is obliquely arranged and projected onto a projection screen through a light outlet for playing.

Referring to fig. 1 to 3, the heat sink assembly 20 includes a plurality of heat dissipation fins 21 connected to the heat conductive plate 113 and located outside the accommodating cavity. The heat radiating fins 21 are metal sheets. The plurality of radiating fins 21 are arranged in parallel at equal intervals so as to facilitate the flow of air flow and take away heat.

Referring to fig. 1 to 3, the heat conducting assembly 30 includes a heat pipe 31, a first heat conducting pad 32 connected to one end of the heat pipe 31, and a second heat conducting pad 33 connected to the other end of the heat pipe 31, wherein the first heat conducting pad 32 is connected to the dmd chip and the optical engine 12, and the second heat conducting pad 33 is connected to a side of the heat conducting plate 113 facing the optical engine 12. The first thermal pad 32 and the second thermal pad 33 are both metal sheets.

This projector is through setting up casing 11 for ray apparatus 12 can be located the holding intracavity, casing 11 is including the heat-conducting plate 113 that can heat conduction, the heat of digital micro mirror wafer and ray apparatus 12 can be absorbed to first heat-conducting gasket 32, and conduct the heat to second heat-conducting gasket 33 through heat pipe 31, second heat-conducting gasket 33 conducts the heat to radiating fin 21 through heat-conducting plate 113, in order to realize the heat dissipation of holding intracavity ray apparatus 12 and digital micro mirror wafer, heat-conducting gasket has played the effect that increase area of contact improves heat conduction efficiency. The housing 11 can isolate the digital micromirror wafer and the optical engine 12 from the heat dissipation assembly 20, the air flow passing through the heat dissipation assembly 20 will not affect the digital micromirror wafer and the optical engine 12, and the digital micromirror wafer and the optical engine 12 will not be affected by the dust in the air flow, so that the digital micromirror wafer and the optical engine 12 can achieve the heat dissipation effect while isolated from the heat dissipation assembly 20, prevent the dust from accumulating on the digital micromirror wafer and the optical engine 12, enhance the dustproof effect, and prolong the service life of the digital micromirror wafer and the optical engine 12.

Referring to fig. 1 to 3, in order to enhance the heat dissipation effect, the heat dissipation assembly 20 further includes an air blowing member 22 connected to the housing 11 and located outside the accommodating cavity, wherein the air blowing member 22 is used for generating an air flow passing through the heat dissipation fins 21. Thus, the air flow can rapidly pass through the gaps between the heat dissipation fins 21 to accelerate the heat dissipation efficiency of the heat dissipation assembly 20. Preferably, the air blowing member 22 is a fan to reduce the processing cost. In order to increase the flow velocity of the air, the blowing direction of the blowing member 22 is parallel to the heat conducting plate 113, and the heat dissipating fins 21 extend along the flow direction, so as to ensure a larger air inlet amount and air outlet amount and improve the heat dissipating efficiency.

Referring to fig. 1 to fig. 3, in the present embodiment, the projector further includes a protective shell 40 covering the heat dissipation assembly 20, and the protective shell 40 has an air inlet and an air outlet. The protective shell 40 and the heat conducting plate 113 together form a mounting cavity, the heat dissipation assembly 20 is located in the mounting cavity, and the air blowing member 22 can guide the airflow in the mounting cavity from the air inlet to the air outlet. Thus, the protective shell 40 can protect the heat dissipation assembly 20 and prevent the heat dissipation assembly 20 from being collided with by the outside. Wherein, two blast air pieces 22 are provided, and two blast air pieces 22 can be located air intake and air outlet respectively to increase the air flow. In this embodiment, the air blowing member 22 is disposed at the air outlet, and plays a certain role in protecting the heat dissipating fins 21. When two blowing members 22 are provided, the line connecting the two blowing members 22 is perpendicular to the flow direction of the air current. I.e. two blowing members 22 are arranged side by side to increase the amount of airflow.

In order to prevent external impurities or winged insects from entering the installation cavity, the projector further comprises a filter screen plate, and the filter screen plate is covered on the air inlet. The filter screen plate can filter the airflow.

The foregoing is only a preferred embodiment of the present invention, and the technical principles of the present invention have been specifically described, and the description is only for the purpose of explaining the principles of the present invention, and should not be construed as limiting the scope of the present invention in any way. Any modifications, equivalents and improvements made within the spirit and principles of the invention and other embodiments of the invention without the creative effort of those skilled in the art are intended to be included within the protection scope of the invention.

Claims

1. A projector, characterized by comprising:

2. The projector as claimed in claim 1, wherein the upper cover is provided with a light exit hole, and the upper cover is provided with a light-transmitting mirror at the light exit hole.

3. The projector as defined in claim 1 wherein the heat dissipation assembly further comprises a blower attached to the housing and located outside the receiving cavity, the blower for generating an air flow through the heat dissipation fins.

4. The projector according to claim 3, wherein a blowing direction of the blowing member is parallel to the heat conductive plate.

5. The projector as defined in claim 3, wherein the air blowing member is a fan.

6. The projector as defined in claim 3 wherein the heat dissipating fins extend in the direction of the airflow.

7. The projector as claimed in claim 3, further comprising a protective housing covering the heat dissipation assembly, the protective housing having an air inlet and an air outlet.

8. The projector of claim 7 further comprising a screen panel, wherein the screen panel covers the air inlet.

9. The projector according to claim 7, wherein the air blowing member is provided at the air outlet.

10. The projector according to claim 9, wherein there are two of said air blowing members, and a line connecting both of said air blowing members is perpendicular to a flow direction of said air flow.