CN212846320U

CN212846320U - Maintenance-free projector

Info

Publication number: CN212846320U
Application number: CN202021883496.9U
Authority: CN
Inventors: 曾万军
Original assignee: Efun Display Technology Shenzhen Co ltd
Current assignee: Efun Display Technology Shenzhen Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-30
Anticipated expiration: 2030-08-31

Abstract

The utility model relates to a projector technical field, the utility model provides a non-maintaining projector includes shell, baffle, ray apparatus subassembly, fan unit spare and radiator unit, and first cavity and second cavity are separated into with the shell to the baffle, and ray apparatus subassembly is located first cavity, and fan unit spare and radiator unit spare are located the second cavity. In the use, the heat that light source and digital little mirror produced is conducted to the radiator body that is in the second cavity by the heat-conducting piece that stretches into in the first cavity, and the fan assembly that is in the second cavity cools off the radiator body through the mode of forced convection again, and then realizes cooling the ray apparatus subassembly at ray apparatus subassembly totally enclosed state, not only has good radiating effect, can also avoid the dust to get into inside the non-maintaining projector, has prolonged the life of non-maintaining projector.

Description

Maintenance-free projector

Technical Field

The utility model relates to a projector technical field especially provides a non-maintaining projector.

Background

With the development of projection technology, projectors are widely used in classrooms, meeting rooms, cinemas and other scenes. Because the optical element of projector contains light source and other easily heating element, so the projector often need to adopt heat abstractor to dispel the heat in the use, present projector generally adopts the mode of forced convection to dispel the heat, the heat transfer mode that adopts forced convection needs the air that flows to get into inside the projector and the inside optical element of projector carries out the heat transfer, easily cause the dust to get into inside the projector, influence the life of the optical assembly of image quality, most projectors on the market all solve this problem through increasing the filter screen, but the filter screen is after long-time the use, can pile up a lot of dust and fibre on the filter screen, influence the radiating efficiency behind the jam filter screen, can burn the inside components and parts of projector under the serious condition even, influence the life-span of projector.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a not only the heat dissipation is good and can avoid the dust to get into the non-maintaining projector of ray apparatus subassembly.

In order to achieve the above object, the utility model adopts the following technical scheme:

a maintenance-free projector comprises a shell, an optical machine assembly, a heat dissipation assembly and a fan assembly, wherein a partition plate is arranged in the shell and divides the shell into a first cavity and a second cavity which are arranged up and down; the optical machine assembly is arranged in the first cavity, and the heat dissipation assembly and the fan assembly are arranged in the second cavity; the fan assembly comprises at least two groups of fan arrays positioned on two sides of the heat dissipation assembly, the fan arrays are matched with the ventilation grids, the heat dissipation assembly is connected with the partition plate, at least one heat conducting piece is arranged on the heat dissipation assembly, and the heat conducting piece penetrates through the partition plate and is abutted to a heat source piece of the optical engine assembly.

Preferably, the heat source device of the optical-mechanical assembly comprises a light source and a digital micro-mirror, and the partition plate is provided with a first through hole matched with the light source and a second through hole matched with the digital micro-mirror; the heat conducting piece comprises a first heat conducting piece and a second heat conducting piece, the first heat conducting piece penetrates through the first through hole to be abutted against the light source, and the second heat conducting piece penetrates through the second through hole to be abutted against the digital micro-reflector.

Preferably, the heat conducting member is one of a heat conducting profile, a heat conducting pipe or a combination of the two.

Preferably, the heat dissipation assembly comprises a mounting plate and a plurality of heat dissipation fins connected to the mounting plate, the plurality of heat dissipation fins being connected to the bottom of the mounting plate and extending downward.

Preferably, the heat conducting member is connected to the mounting plate, and a side portion of the heat conducting member abuts against the heat source member of the optical mechanical assembly.

Preferably, the housing includes an upper cover and a bottom plate, the upper cover includes a frame body having a rectangular cross section and an opening at the bottom, the frame body includes four side wall portions connected to the bottom plate, three of the four side wall portions are provided with a first ventilation grid, a second ventilation grid and a third ventilation grid which are adjacently arranged in sequence, and the first ventilation grid and the third ventilation grid are arranged oppositely; and the rest one of the four side wall parts is provided with a mounting opening which is symmetrical to the second ventilation grid, and one side of the bottom part is provided with a fourth ventilation grid which can cover the mounting opening.

Preferably, the fan array includes a first air intake fan set and a first exhaust fan set which are arranged between the first ventilation grid and the third ventilation grid, and the air outlet directions of the first air intake fan set and the first exhaust fan set are the same and symmetrically arranged at two sides of the heat dissipation assembly.

Preferably, the fan array includes a second air intake fan set and a second exhaust fan set which are arranged between the second ventilation grid and the fourth ventilation grid, and the second air intake fan set and the second exhaust fan set have the same air outlet direction and are symmetrically arranged on the other two sides of the heat dissipation assembly.

Preferably, the first air intake fan set, the second air intake fan set, the first exhaust fan set, the second exhaust fan set, and the heat dissipation assembly are disposed on a same horizontal plane.

Preferably, the optical-mechanical assembly comprises a main board, and a lens and a terminal row which are respectively electrically connected with the main board, one of the four side wall parts of the upper cover is provided with a transparent sealing sheet corresponding to the position of the lens, and the other of the four side wall parts is provided with a terminal row sealing patch used for sealing the terminal row.

The utility model has the advantages that: the utility model provides a non-maintaining projector, in the use, the heat that the heat source spare of ray apparatus subassembly produced is conducted to the second cavity by radiator unit in, the fan subassembly that is in the second cavity cools off radiator unit through the mode of forced convection again, and then realize the cooling to ray apparatus subassembly under the complete confined state of ray apparatus subassembly, make non-maintaining projector not only have good radiating effect, can also avoid the dust to get into the inside life and the imaging quality who influences ray apparatus subassembly of first cavity, the maintenance frequency and the cost of non-maintaining projector have greatly been reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced 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 inventive labor.

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

fig. 2 is an exploded schematic view of a first view angle of a maintenance-free projector according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a second view angle of the maintenance-free projector according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a housing; 11-a first cavity; 12-a second cavity; 13-upper cover; 131-a sidewall portion; 1311-a first ventilation grid; 1312-a second ventilation grid; 1313-a third ventilation grid; 1314-mounting port; 14-a base plate; 141-a fourth ventilation grid; 2-a separator; 21-a first perforation; 22-a second perforation; 3-an optical-mechanical assembly; 31-a light source; 32-lens; 321-transparent sealing sheet; 33-a motherboard assembly; 34-terminal row; 4-a heat dissipation assembly; 41-mounting plate; 42-a heat sink; 43-a first thermally conductive member; 44-a second thermally conductive member; 5-a fan assembly; 51-a first intake fan set; 52-first exhaust fan set; 53-a second intake fan set; 54-second exhaust fan set.

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.

Referring to fig. 1 and fig. 2, the present embodiment provides a maintenance-free projector, which includes a housing 1, a partition 2, an optical-mechanical assembly 3, a heat dissipation assembly 4, and a fan assembly 5.

Referring to fig. 1 and 2, the casing 1 is divided into a first cavity 11 and a second cavity 12 by the partition board 2, the first cavity 11 and the second cavity 12 may be sequentially arranged in a vertical direction or sequentially arranged in a horizontal direction, the casing 1 in this embodiment is a cuboid, and the casing 1 is divided into two cuboids arranged up and down by the partition board 2.

Referring to fig. 2 and 3, the optical-mechanical assembly 3 is disposed in the first cavity 11, and the optical-mechanical assembly 3 includes a light source 31, a digital micro mirror (DMD), a lens 32, a main board 33, and a terminal strip 34. The light source 31 is used for generating light required by the operation of the maintenance-free projector, the digital micro-mirror (not shown) is used for processing the received light to obtain an optical signal with picture information, and the lens 32 is used for projecting the optical signal with the picture information onto a screen to obtain a visible pattern. When the maintenance-free projector transmits signals in a wired mode, the terminal block 34 is connected with an external signal line, and the main board 33 is electrically connected with the terminal block 34 to receive and analyze signals of the external signal line and control the light source 31, the digital micro-mirror and the lens 32 to image. When the maintenance-free projector transmits signals in a wireless manner, the terminal strip 34 is not connected with a signal line, the main board 33 directly receives the signals in a wireless manner, and the light source 31, the digital micro-mirror and the lens 32 are controlled after the signals are analyzed. Wherein the light source 31 and the digital micro-mirror are the main heat source elements of the opto-mechanical assembly 3 of the maintenance-free projector.

Referring to fig. 3, the heat dissipation assembly 4 and the fan assembly 5 are disposed in the second cavity 12, the heat dissipation assembly 4 is configured to conduct heat of the heat source of the optical mechanical assembly 3 in the first cavity 11 to the second cavity 12, and the fan assembly 5 is configured to cool the heat dissipation assembly 4 in the second cavity 12, so as to take the heat of the optical mechanical assembly 3 out of the housing 1 of the maintenance-free projector.

The heat dissipation assembly 4 includes a mounting plate 41, a plurality of heat dissipation fins 42 and a plurality of heat conduction members, the plurality of heat dissipation fins 42 are connected to the bottom of the mounting plate 41 and extend downwards, the plurality of heat conduction members are connected to the mounting plate 41 and adopt side portions to abut against the heat source member of the optical mechanical assembly 3. The quantity of heat-conducting piece can be one, two etc., can set up according to the demand, the quantity of heat-conducting piece is two in this embodiment, be first heat-conducting piece 43 and second heat-conducting piece 44 respectively, first heat-conducting piece 43 and second heat-conducting piece 44 are all perpendicular with mounting panel 41, first heat-conducting piece 43 and second heat-conducting piece 44 can with mounting panel 41 integrated into one piece, also can with the shaping of mounting panel 41 components of a whole that can function independently, during the shaping of components of a whole that can function independently, mounting panel 41, first heat-conducting piece 43 and second heat-conducting piece 44 contradict or can dismantle with mounting panel 41 and be connected. The first heat conducting member 43 and the second heat conducting member 44 may be one or a combination of a heat conducting profile and a heat conducting pipe, the mounting plate 41 may also be a heat conducting profile or other heat dissipating device capable of conducting heat, and in this embodiment, the mounting plate 41, the first heat conducting member 43, and the second heat conducting member 44 are all heat conducting profiles. The baffle plate 2 is provided with a first perforation 21 matched with the position of the light source 31 and a second perforation 22 matched with the position of the digital micro-reflector; the first heat-conducting member 43 passes through the first through hole 21 and then abuts against the light source 31, and the second heat-conducting member 44 passes through the second through hole 22 and then abuts against the digital micromirror. The second heat conducting member 44 may be closely attached to the heat dissipating fins of the digital micromirror, and the second heat conducting member 44, the first heat conducting member 43, and the spacer 2 are sealed, for example, by dispensing.

The housing 1 includes an upper cover 13 and a bottom plate 14, the upper cover 13 is a frame body with a rectangular cross section and an opening at the bottom, the frame body includes four side wall portions 131 connected with the bottom plate 14, three of the four side wall portions 131 are provided with a first ventilation grid 1311, a second ventilation grid 1312 and a third ventilation grid 1313 which are adjacently arranged in sequence, and the first ventilation grid 1311 and the third ventilation grid 1313 are symmetrically arranged. The remaining one of the four sidewall portions 131 is provided with a mounting opening 1314 symmetrically arranged with the second ventilation grid 1312, and one side of the bottom plate 14 is provided with a fourth ventilation grid 141 capable of covering the mounting opening 1314.

The fan assembly 5 is provided with a fan array at least in one direction of the heat dissipation assembly 4, and in the embodiment, the fan assembly 5 includes two sets of fan arrays, wherein one set of fan array includes a first air intake fan set 51 and a first air exhaust fan set 52; the other fan array includes a second intake fan group 53 and a second exhaust fan group 54. The first intake fan set 51 and the first exhaust fan set 52 are disposed between the first ventilation grid 1311 and the third ventilation grid 1312, the air outlet directions of the first intake fan set 51 and the first exhaust fan set 52 are the same, and the first intake fan set 51 and the first exhaust fan set 52 are symmetrically disposed on two sides of the heat dissipation assembly 4, the first intake fan set 51 corresponds to the first ventilation grid 1311, and the first exhaust fan set 52 corresponds to the third ventilation grid 1313. The first intake fan group 51 is facilitated to suck cold air from the outside of the maintenance-free projector, and the first exhaust fan group 52 is facilitated to exhaust hot air that has cooled the heat dissipation assembly 4. The second air intake fan set 53 and the second exhaust fan set 54 are disposed between the second ventilating grid 1312 and the fourth ventilating grid 141, the air outlet directions of the second air intake fan set 53 and the second exhaust fan set 54 are the same, and the second air intake fan set 53 and the second exhaust fan set 54 are symmetrically disposed on the other two sides of the heat dissipation assembly 4, the second air intake fan set 53 corresponds to the second ventilating grid 1312, and the second exhaust fan set 54 corresponds to the fourth ventilating grid 141. The second intake fan group 53 is facilitated to suck in cold air from the outside of the maintenance-free projector, and the second exhaust fan group 54 discharges hot air that has cooled the heat dissipation assembly 4. In this embodiment, the first intake fan set 51, the first exhaust fan set 52, the second intake fan set 53 and the second exhaust fan set 54 each include three fans disposed proximate to the heat sink assembly 4.

The first intake fan set 51, the second intake fan set 53, the first exhaust fan set 52 and the second exhaust fan set 54 are disposed on the same horizontal plane as the heat dissipation assembly 4.

Referring to fig. 2 and 3, in the present embodiment, one of the four sidewall portions 131 is provided with a transparent sealing sheet 321 corresponding to the lens 32, and in the present embodiment, the transparent sealing sheet 321 is a transparent glass for sealing the lens 32 and preventing dust from entering the optical module 3 from the lens 32. Another of the four side wall portions 131 is provided with a terminal block sealing patch (not shown) for sealing the terminal block 34 from dust entering the inside of the opto-mechanical assembly 3 from the terminal block 34. The side wall portion 131 provided with the transparent sealing sheet 321 and the terminal array sealing sheet and the side wall portion 131 provided with the terminal array sealing sheet are disposed opposite to each other.

The maintenance-free projector that this embodiment provided, in the use, the heat that light source 31 and digital micro mirror produced is conducted to mounting panel 41 and the fin 42 that is in second cavity 12 by first heat-conducting piece 43 and the second heat-conducting piece 44 that stretches into in first cavity 11, cool off heat-radiating component 4 through the mode of forced convection by fan assembly 5 that is in second cavity 12 again, and then realize cooling off ray apparatus component 3 at ray apparatus component 3 totally enclosed state, not only have good radiating effect, and because first cavity 11 overall seal sets up, can avoid the dust to get into, can not influence the life and the formation of image quality of ray apparatus component 3 in first cavity 11.

In addition, when the fan assembly 5 is used, the heat dissipation assembly 4 may be dissipated in a manner that the first air intake fan set 51, the first exhaust fan set 52, the second air intake fan set 53 and the second exhaust fan set 54 operate simultaneously, the heat dissipation assembly 4 may be dissipated in a manner that two fan sets located between the first ventilation grid 1311 and the third ventilation grid 1313 and two fan sets located between the second ventilation grid 1312 and the fourth ventilation grid 141 operate alternately, dust in the second cavity 12 may be taken out of the second cavity 12 from different directions, the heat dissipation assembly 4 and the fan assembly 5 in the second cavity 12 are prevented from accumulating dust, and the maintenance cost of the entire maintenance-free projector may be further reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A maintenance-free projector is characterized in that: the cooling device comprises a shell, an optical machine assembly, a heat dissipation assembly and a fan assembly, wherein a partition plate is arranged in the shell and divides the shell into a first cavity and a second cavity which are arranged up and down; the optical machine assembly is arranged in the first cavity, and the heat dissipation assembly and the fan assembly are arranged in the second cavity; the two symmetrical sides of the shell are respectively provided with a ventilation grid communicated with the second cavity, the fan assembly comprises at least two groups of fan arrays positioned on the two sides of the heat dissipation assembly, and the fan arrays are matched with the ventilation grids in position; the heat dissipation assembly is connected with the partition plate, at least one heat conduction piece is arranged on the heat dissipation assembly, and the heat conduction piece penetrates through the partition plate and is abutted to the heat source piece of the optical engine assembly.

2. The maintenance-free projector according to claim 1, wherein: the heat source piece of the optical-mechanical assembly comprises a light source and a digital micro-reflector, and the baffle plate is provided with a first through hole matched with the light source and a second through hole matched with the digital micro-reflector; the heat conducting piece comprises a first heat conducting piece and a second heat conducting piece, the first heat conducting piece penetrates through the first through hole to be abutted against the light source, and the second heat conducting piece penetrates through the second through hole to be abutted against the digital micro-reflector.

3. The maintenance-free projector according to claim 2, wherein: the heat conducting piece is one or the combination of a heat conducting section bar and a heat conducting pipe.

4. The maintenance-free projector according to claim 1, wherein: the heat dissipation assembly comprises a mounting plate and a plurality of cooling fins connected with the mounting plate, and the plurality of cooling fins are connected to the bottom of the mounting plate and extend downwards.

5. The maintenance-free projector according to claim 4, wherein: the heat conducting member is connected to the mounting plate, and a side portion of the heat conducting member abuts against a heat source member of the optical engine assembly.

6. A maintenance-free projector according to any one of claims 1 to 5, wherein: the shell comprises an upper cover and a bottom plate, the upper cover comprises a frame body with a rectangular cross section and an opening at the bottom, the frame body comprises four side wall parts respectively connected with the bottom plate, three of the four side wall parts are provided with a first ventilation grid, a second ventilation grid and a third ventilation grid which are sequentially and adjacently arranged, and the first ventilation grid and the third ventilation grid are symmetrically arranged; and the rest one of the four side wall parts is provided with a mounting opening which is symmetrical to the second ventilation grid, and one side of the bottom plate is provided with a fourth ventilation grid which can cover the mounting opening.

7. The maintenance-free projector according to claim 6, wherein: the fan array comprises a first air inlet fan set and a first air outlet fan set which are arranged between the first ventilation grid and the third ventilation grid, the air outlet direction of the first air inlet fan set is the same as that of the first air outlet fan set, and the first air inlet fan set and the first air outlet fan set are symmetrically arranged on two sides of the heat dissipation assembly.

8. The maintenance-free projector according to claim 7, wherein: the fan array comprises a second air inlet fan set and a second air outlet fan set which are arranged between the second ventilation grid and the fourth ventilation grid, the air outlet directions of the second air inlet fan set and the second air outlet fan set are the same, and the second air inlet fan set and the second air outlet fan set are symmetrically arranged on the other two sides of the heat dissipation assembly.

9. The maintenance-free projector according to claim 8, wherein: the first air inlet fan set, the first exhaust fan set, the second air inlet fan set, the second exhaust fan set and the heat dissipation assembly are arranged on the same horizontal plane.

10. The maintenance-free projector according to claim 6, wherein: the optical machine assembly comprises a main board, a lens and a terminal row which are electrically connected with the main board respectively, one of the four side wall parts of the upper cover is provided with a transparent sealing sheet corresponding to the position of the lens, and the other of the four side wall parts is provided with a terminal row sealing patch used for sealing the terminal row.