CN113126401A

CN113126401A - Projector

Info

Publication number: CN113126401A
Application number: CN201911414023.6A
Authority: CN
Inventors: 邓高飞; 刘宪; 余新
Original assignee: Cineapro Laser Cinema Technology Beijing Co ltd
Current assignee: Cineapro Laser Cinema Technology Beijing Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-16
Anticipated expiration: 2039-12-31
Also published as: WO2021135833A1; CN113126401B

Abstract

The invention provides a projector which comprises a shell with an accommodating space and a radiator fixed in the accommodating space, wherein the shell comprises a plurality of louver structures penetrating through the shell, the radiator comprises a plurality of radiating fins which are overlapped and arranged in parallel at intervals, the radiating fins are abutted to one end of the shell to form an air outlet surface together, one ends of the radiating fins far away from the air outlet surface form an air inlet surface together, the air outlet surface is abutted to the shell and completely covers the louver structures, and the accommodating space is communicated with the outside sequentially through the radiator and the louver structures. Compared with the prior art, the projector meets the requirement of DCI certification, and has the advantages of good ventilation condition, good system heat dissipation performance and low noise.

Description

Projector

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of projectors, in particular to a projector conforming to DCI authentication.

[ background of the invention ]

With the increasing living standard of people, the requirements of the projector in the cinema for showing quality and confidentiality are higher and higher. Projectors that comply with the requirement for digital rights unique Identifier (DCI) authentication are becoming more and more important. Among them, the heat dissipation structure of the projector is an important component thereof.

The heat dissipation structure of the related art projector includes a housing and a heat sink coupled to the housing.

However, in the current projectors, the outer case connected to the heat sink is provided in a labyrinth structure in order to satisfy the tamper-proof regulation required for DCI certification. The maze structure can obstruct the view, and the observer can not see the inner parts of the projector without special tools. The structure design of the shell of the scheme is complex, the volume is large, the resistance of the air duct of the system is large, the heat dissipation effect of the fan cannot be effectively released, and the fan with large size or thick size is often selected for obtaining enough air volume and air pressure, so that the whole size and the noise of the projector are large.

[ summary of the invention ]

The present invention is directed to overcoming the above-mentioned problems and providing a projector that satisfies the DCI authentication requirements, has good ventilation conditions, and has good heat dissipation performance and low noise.

In order to achieve the above object, the present invention provides a projector, including a housing having an accommodating space and a heat sink fixed in the accommodating space, wherein the heat sink includes a plurality of heat dissipating fins stacked on each other and arranged in parallel at intervals, the plurality of heat dissipating fins abut against one end of the housing to form an air outlet surface, and one ends of the plurality of heat dissipating fins far away from the air outlet surface form an air inlet surface, the housing includes a plurality of louver structures penetrating through the housing, the air outlet surface abuts against the housing and covers the louver structures completely, and the accommodating space is communicated with the outside through the heat sink and the louver structures in sequence.

Preferably, the shutter structure includes a plurality of ventilation holes that run through respectively the casing and by the outside surface of casing is to keeping away from the polylith blade of the slope extension of the direction of radiator, each the blade with one the ventilation hole sets up relatively, just the blade to rather than corresponding the orthographic projection of ventilation hole covers this ventilation hole completely.

More preferably, the ventilation hole is the rectangle, radiating fin is on a parallel with the major axis setting in ventilation hole, the blade by the major axis limit bending type in ventilation hole extends the formation.

Preferably, the plurality of vent holes are arranged in an array.

Preferably, the width of the heat dissipation fin and the distance between the end of the ventilation hole far away from the blade are positively correlated with the height of the ventilation hole.

More preferably, radiating fin's width is 40mm, the blade is kept away from the one end distance in ventilation hole the height in ventilation hole is 4 mm.

Preferably, the angle between the plane of the shell connected with the blade and the blade is 40 degrees.

Preferably, the plurality of blades are inclined in the same direction relative to the housing.

Preferably, the louver structure further comprises two connecting pieces which are vertically extended from the two short shaft sides of the ventilation hole respectively, and the two connecting pieces are connected with the two opposite sides of the blade corresponding to the ventilation hole respectively.

Preferably, the projector further comprises a fan installed in the accommodating space, and the fan discharges air in the accommodating space to the outside of the housing through the radiator and the vent hole in sequence when rotating.

Compared with the prior art, the projector provided by the invention has the advantages that the plurality of louver structures penetrating through the projector are arranged on the projector through the shell, the air outlet surfaces formed by the plurality of radiating fins of the radiator are abutted against the shell and completely cover the louver structures, so that the accommodating space in the shell is communicated with the outside through the radiator and the louver structures in sequence, the shell is not required to be arranged into a labyrinth structure, the resistance of a system air duct is small, and the projector is good in ventilation condition, good in system radiating performance and low in noise. In addition, the plurality of louver structures arranged on the shell have the function of blocking the linear incidence of light rays, the structure can ensure that the internal board cards, wire rods and the like of the projector are invisible, and ensure that an observer cannot extend a simple tool from the outside, namely cannot acquire information in the interior of the projector, namely, the structure meets the anti-tampering regulation in the DCI certification, so that the projector meets the requirement of the DCI certification.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is an assembled view of a partial housing and heat sink construction of the projector of the present invention;

FIG. 2 is an assembly view of a portion of the housing and heat sink of the projector of the present invention at an alternate angle;

FIG. 3 is a schematic perspective view of a portion of the housing of the projector of the present invention;

fig. 4 is a partial perspective view of another angle of the housing of the projector of the present invention.

[ detailed description ] embodiments

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 a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1-3, the present invention provides a projector (not shown) including a housing 1, a heat source (not shown), a fan (not shown), and a heat sink 2.

The housing 1 has a housing space 10. The housing 1 includes a plurality of louvered structures 11 disposed therethrough. The accommodating space 10 is communicated with the outside through the radiator 2 and the louver structure 11 in sequence. The louver structure 11 is used to communicate the radiator 2 with the outside air, and this structure facilitates the radiator 2 to directly transfer heat to the outside.

In the present embodiment, the louver structure 11 includes a plurality of ventilation holes 110, a plurality of blades 111, and two attachment pieces 112. Specifically, the plurality of ventilation holes 110 respectively penetrate through the housing 1. The plurality of fins 111 extend obliquely from the outer surface of the housing 1 in a direction away from the heat sink 2. Each of the blades 111 is disposed opposite to one of the ventilation holes 110, and an orthographic projection of the blade 111 to the corresponding ventilation hole 110 completely covers the ventilation hole 110. Two connecting pieces 112 extend perpendicularly from the two short-axis sides of the vent hole 110, respectively. Two connecting pieces 112 are connected to opposite sides of the blades 111 corresponding to the ventilation holes 110, respectively. The louver structure 11 is configured to communicate air between the inside of the casing 1 and the outside, and to ensure that the internal clips, wires, and the like of the projector are invisible, and to ensure that an observer cannot insert a simple tool from the outside, that is, cannot acquire information inside the projector, that is, to satisfy the tamper-proof regulations in DCI authentication, so that the projector satisfies the DCI authentication requirements.

The heat source is installed in the receiving space 10. The heat generated by the heat source raises the temperature of the air in the housing space 10. In this embodiment, the heat source includes a light bulb and a processor chip.

The fan is installed in the receiving space 10. The fan is used for transferring the heat of the air in the accommodating space 10 to the outside through the radiator 2.

The heat sink 2 is fixed in the housing space 10. Specifically, the heat sink 2 includes a plurality of heat dissipation fins 21 stacked on each other and arranged in parallel at intervals. Wherein, a plurality of radiating fin 21 butt form the air-out face in the one end of casing 1 jointly, and the one end that a plurality of radiating fin 21 kept away from the air-out face forms the air inlet face jointly. The heat sink 2 is a device commonly used in the art and therefore will not be described in detail herein.

In the present embodiment, the air outlet surface abuts against the housing 1 and completely covers the louver structure 11. That is, when the fan rotates, the air in the housing space 10 is discharged to the outside of the case 1 through the heat sink 2 and the vent hole 110 in this order. Specifically, when the fan rotates, the air in the housing space 10 is discharged to the outside of the case 1 through the heat sink 2 and the vent hole 110 in this order. The structure does not need to set the shell into a labyrinth structure, and the resistance of the air duct of the system is smaller, so that the fan can only select the specification model with smaller size and thinner thickness, and enough air volume and air pressure can be obtained, thereby the ventilation condition of the projector is good, the heat dispersion performance of the system is good, and the noise is low. Because the projector is low in noise, the user experience is good.

In the present embodiment, the plurality of ventilation holes 110 are arranged in an array. Specifically, the plurality of ventilation holes 110 are arranged in multiple rows or multiple columns. The structure is beneficial to blocking the sight of an observer, meeting the anti-tampering regulation in DCI authentication and being beneficial to heat dissipation and ventilation of the projector.

In the present embodiment, the ventilation holes 110 are rectangular in shape, and the heat radiation fins 21 are provided parallel to the long axes of the ventilation holes 110. The structure can block the sight of the observer, and is also beneficial to the heat dissipation and ventilation of the projector.

In the present embodiment, the blades 111 are formed by bending and extending the long-axis sides of the vent holes 110. That is, the ventilation hole 110 blocks the view of the observer through the blade 111 in the short axis direction. Wherein the plurality of blades 111 are inclined in the same direction with respect to the housing 1. This structure makes the effect of blocking the sight of the observer better.

Referring to fig. 4, an angle between a plane of the housing 1 connected to the vane 111 and the vane 111 is defined as β. In the present embodiment, β is 40 °. This angle advantageously enables blocking the view of the viewer from direct observation or detection of the projector internal components by means of a simple tool.

In order to effectively block the view of the observer, in addition to the angle of the blade 111, the height of the short axis of the ventilation hole 110, defined as H, from the ventilation hole 110, may be adjusted. Specifically, the width of the heat dissipating fin 21 is positively correlated with the height of the end of the blade 111 away from the vent 110. I.e. the width of the heat dissipating fins 21 is positively correlated with H. The width of the heat dissipation fin 21 refers to the distance from the air inlet surface to the air outlet surface of the heat dissipation fin 21. The positive correlation is that if the width of the heat dissipation fin 21 is larger, the height of the blade 111 can be larger, so that the good ventilation effect can be satisfied and the blocking of the sight of the observer can be ensured. However, this causes the projector to become bulky, which is disadvantageous for miniaturization. Through balancing and optimization, in the present embodiment, the width of the heat dissipating fin 21 is 40mm, and the height of the end of the blade 111 away from the vent 110 is 4mm from the vent 110. The arrangement can effectively block the sight of the observer. The dimensional structure is beneficial to ventilation and meets the anti-tampering regulation in DCI certification, so that the projector meets the requirements of the DCI certification.

Compared with the prior art, the projector has the advantages that the plurality of shutter structures penetrating through the projector are arranged on the projector through the shell, the air outlet surfaces formed by the plurality of radiating fins of the radiator are abutted to the shell and completely cover the shutter structures, so that the accommodating space in the shell is communicated with the outside through the radiator and the shutter structures in sequence. In addition, the plurality of louver structures arranged on the shell have the function of blocking the linear incidence of light rays, the structure can ensure that the internal board cards, wire rods and the like of the projector are invisible, and ensure that an observer cannot extend a simple tool from the outside, namely cannot acquire information in the interior of the projector, namely, the structure meets the anti-tampering regulation in the DCI certification, so that the projector meets the requirement of the DCI certification.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. A projector comprises a shell with an accommodating space and a radiator fixed in the accommodating space, wherein the radiator comprises a plurality of radiating fins which are mutually overlapped and arranged at intervals in parallel, the radiating fins are abutted against one end of the shell to form an air outlet face together, and the radiating fins are far away from one end of the air outlet face to form an air inlet face together.

2. The projector as claimed in claim 1, wherein the louver structure includes a plurality of ventilation holes respectively penetrating the housing and a plurality of blades extending obliquely from an outer surface of the housing in a direction away from the heat sink, each of the blades being disposed opposite to one of the ventilation holes, and an orthographic projection of the blade to the corresponding ventilation hole completely covers the ventilation hole.

3. The projector as claimed in claim 2, wherein the ventilation hole has a rectangular shape, the heat dissipating fins are disposed parallel to a long axis of the ventilation hole, and the blades are formed by bending and extending long-axis sides of the ventilation hole.

4. The projector as claimed in claim 2, wherein the plurality of ventilation holes are arranged in an array.

5. The projector as claimed in claim 3, wherein the width of the heat dissipating fin is positively correlated with the height of the end of the blade away from the vent hole.

6. The projector as claimed in claim 5, wherein the width of the heat radiating fin is 40mm, and the height of the end of the vane far from the ventilation hole is 4mm from the ventilation hole.

7. A projector as claimed in claim 6, characterized in that the plane of the housing to which the vane is connected is at an angle of 40 ° to the vane.

8. A projector as set forth in claim 2, wherein a plurality of said vanes are inclined in the same direction relative to said housing.

9. A projector as set forth in claim 3, wherein said louver structure further includes two coupling pieces extending perpendicularly from both short-axis sides of said ventilation hole, respectively, and coupled to opposite sides of said blades corresponding to said ventilation hole, respectively.

10. The projector as claimed in claim 1, further comprising a fan installed in the accommodating space, the fan being rotated to discharge air in the accommodating space to the outside of the housing through the heat sink and the vent hole in this order.