projector

Abstract

The present invention provides a projector, comprising a housing, a mainboard, an optical engine, a heat sink, a first ventilation mechanism, and a plurality of second ventilation mechanisms. The mainboard and the optical engine are disposed within the housing. The first ventilation mechanism is provided with a first air inlet and a first air outlet, and the second ventilation mechanism is provided with a second air inlet and a second air outlet. The first ventilation mechanism is disposed above or below the mainboard, with the first air inlet facing the mainboard. The optical engine is disposed between the mainboard and the first ventilation mechanism. The heat sink is disposed on the optical engine and faces the first air outlet. The first air outlet is configured to discharge air entering the first ventilation mechanism out of the housing. All second ventilation mechanisms are disposed on opposite sides of the mainboard, with the air outlets of the second ventilation mechanisms facing the mainboard, and the second air inlets are configured to draw air from outside the housing. In the projector provided by the present invention, the first ventilation mechanism and the second ventilation mechanism can form air ducts, accelerate air flow, and thereby improve the heat dissipation efficiency of the projector.

Description

Technical Field

[0001] The present invention belongs to the technical field of projectors, and more particularly, relates to a projector. Background Art

[0002] A projector is a device that can project images or videos onto a screen and is currently widely used in homes, offices, schools and entertainment venues.

[0003] Projectors generate a significant amount of heat during operation. If this heat cannot be dissipated promptly, it will shorten the projector's lifespan. Existing projector heat sinks can only dissipate heat from a portion of the projector's heating components. Heat generated by these components is difficult to dissipate promptly, resulting in low heat dissipation efficiency and poor cooling. This, in turn, causes heat generated by the heating components to accumulate within the projector, shortening its lifespan. Summary of the Invention

[0004] The object of the present invention is to provide a projector to solve the technical problem of low heat dissipation efficiency of projectors in the prior art.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: providing a projector, comprising a housing, a mainboard, an optical engine, a heat sink, a first ventilation mechanism and a plurality of second ventilation mechanisms, wherein the mainboard and the optical engine are arranged in the housing;

[0006] The first ventilation mechanism is provided with a first air inlet and a first air outlet, and the second ventilation mechanism is provided with a second air inlet and a second air outlet;

[0007] The first ventilation mechanism is arranged above or below the main board, and the first air inlet faces the main board;

[0008] The optical engine is disposed between the mainboard and the first ventilation mechanism; the heat sink is disposed on the optical engine and faces the first air outlet; the first air outlet is used to discharge the air entering the first ventilation mechanism out of the housing;

[0009] All the second ventilation mechanisms are arranged on opposite sides of the main board. The second air outlets are used to discharge the air entering the second ventilation mechanisms to the top and bottom of the main board, and the second air inlet is used to inhale air outside the shell.

[0010] Furthermore, the radiator is arranged in the shell, and a first ventilation hole is provided in the shell at a position opposite to the first air outlet.

[0011] Furthermore, the first ventilation mechanism is provided with a third air inlet, and the third air inlet is used to inhale air outside the shell.

[0012] Furthermore, the first ventilation mechanism and the second ventilation mechanism are both arranged in the housing;

[0013] A second ventilation hole is provided on the housing at a position opposite to the second air inlet;

[0014] A third ventilation hole is provided on the shell at a position opposite to the third air inlet.

[0015] Furthermore, the first air outlet is oriented to avoid the light emitting direction of the light engine.

[0016] Furthermore, the first ventilation mechanism, the radiator and the second ventilation mechanism are each provided in pairs, and the first ventilation mechanism and the radiator correspond one to one;

[0017] The two second ventilation mechanisms are distributed on the left and right sides of the main board;

[0018] The two first ventilation mechanisms are both arranged below the main board and between the two second ventilation mechanisms;

[0019] The heat sink is arranged below the mainboard and located at the rear side of the optical engine.

[0020] Furthermore, the second air inlet is oriented to avoid the light emitting direction of the light engine.

[0021] Furthermore, all the second ventilation mechanisms are symmetrically distributed on both sides of the main board.

[0022] Furthermore, the first air inlet and all the second air outlets are vertically aligned.

[0023] Furthermore, the first ventilation mechanism is a turbo fan;

[0024] The second ventilation mechanism is an axial flow fan.

[0025] The beneficial effects of the projector provided by the present invention are as follows: compared with the prior art, the shell of the projector of the present invention is used to protect the mainboard and the optical engine, all the second ventilation mechanisms are arranged on the opposite sides of the mainboard, and the second air outlet on the second ventilation mechanism is used to discharge the air entering the second ventilation mechanism to the upper and lower ends of the mainboard, thereby accelerating the air flow speed on the surface of the mainboard and timely taking away the heat generated by the heat-generating components on the mainboard; the radiator is used for heat dissipation of the optical engine, the first air inlet on the first ventilation mechanism faces the mainboard, and the first air outlet faces the radiator, and the air blown to the mainboard by the second ventilation mechanism will meet above and below the mainboard respectively, so that the air on the same side of the mainboard as the first ventilation mechanism will be attracted by the first ventilation mechanism to pass through the optical engine and enter the first ventilation mechanism, and then pass through the radiator and be discharged out of the shell to improve the surface of the optical engine. The air flow rate on the surface of the housing and the heat sink of the radiator can promptly take away the heat generated by the optical machine; the first ventilation mechanism and the second ventilation mechanism make the air flow direction entering the housing fixed, and make the air flow quickly and sufficiently, so as to promptly take away the heat generated by the mainboard and the optical machine, and improve the heat dissipation efficiency of the projector; the first ventilation mechanism can not only guide the air flow direction, but also accelerate the air flow rate in the radiator. Compared with multiple fans that respectively complete the guiding and accelerating functions, the internal space occupied by the housing is saved, and the flexibility of the position distribution of components such as the optical machine and the radiator is increased; because the air in the housing can form a fixed flow direction after passing through the first ventilation mechanism and the second ventilation mechanism, the resistance to air circulation is reduced, thereby reducing the noise of the first ventilation mechanism and the second ventilation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a projector provided in an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the projector;

[0029] Figure 3 for Figure 2 Schematic diagram of part of the structure of the projector;

[0030] Figure 4 for Figure 2 Air flow diagram for the projector in .

[0031] Among them, the reference numerals in the figures are:

[0032] 1. Housing; 11. Upper shell; 12. Lower shell; 121. First ventilation hole; 122. Second ventilation hole; 2. Mainboard; 3. Optical engine; 4. Radiator; 5. First ventilation mechanism; 51. First air inlet; 6. Second ventilation mechanism; 61. Second air inlet; 62. Second air outlet. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0037] See also Figures 1 to 4 The projector provided by the present invention is now described. The projector includes a housing 1, a mainboard 2, an optical engine 3, a heat sink 4, a first ventilation mechanism 5, and a plurality of second ventilation mechanisms 6. The mainboard 2 and the optical engine 3 are disposed in the housing 1.

[0038] The first ventilation mechanism 5 is provided with a first air inlet 51 and a first air outlet (not shown in the figure), and the second ventilation mechanism 6 is provided with a second air inlet 61 and a second air outlet 62;

[0039] The first ventilation mechanism 5 is arranged above or below the mainboard 2, with the first air inlet 51 facing the mainboard 2. Preferably, the first ventilation mechanism 5 is arranged below the mainboard 2, so that the internal structure distribution of the housing 1 is more reasonable. Compared with the case where the first ventilation mechanism 5 is arranged above the mainboard 2, this can prevent the optical engine 3 and the first ventilation mechanism 5 from crushing the mainboard 2 due to their own gravity, and also facilitates the installation of the first ventilation mechanism 5, the optical engine 3, the mainboard 2 and other components.

[0040] The optical engine 3 is disposed between the mainboard 2 and the first ventilation mechanism 5; the heat sink 4 is disposed on the optical engine 3 and faces the first air outlet; the first air outlet is used to discharge the air entering the first ventilation mechanism 5 out of the housing 1;

[0041] All second ventilation mechanisms 6 are arranged on opposite sides of the main board 2 . The second air outlets 62 are used to discharge the air entering the second ventilation mechanisms 6 to the top and bottom of the main board 2 , and the second air inlets 61 are used to inhale air outside the housing 1 .

[0042] In the embodiment of the present invention, the projection direction of the optical engine 3 is toward the front.

[0043] Compared with the prior art, the projector provided by the present invention has a shell 1 for protecting the mainboard 2 and the optical engine 3, and all the second ventilation mechanisms 6 are arranged on opposite sides of the mainboard 2, and the second air outlet 62 on the second ventilation mechanism 6 is used to discharge the air entering the second ventilation mechanism 6 to the top and bottom of the mainboard 2, thereby accelerating the air flow speed on the surface of the mainboard 2 and timely taking away the heat generated by the heat-generating components on the mainboard 2; the radiator 4 is used for heat dissipation of the optical engine 3, the first air inlet 51 on the first ventilation mechanism 5 faces the mainboard 2, and the first air outlet faces the radiator 4, and the air blown to the mainboard 2 by the second ventilation mechanism 6 will meet above and below the mainboard 2 respectively, so that the air on the same side of the mainboard 2 as the first ventilation mechanism 5 will be attracted by the first ventilation mechanism 5 through the optical engine 3, and after entering the first ventilation mechanism 5, it passes through the radiator 4 and is discharged outside the shell 1, thereby improving the surface of the optical engine 3. The air flow rate on the surface of the housing 1 and the heat sink fin surface of the radiator 4 can promptly take away the heat generated by the optical machine 3; the first ventilation mechanism 5 and the second ventilation mechanism 6 make the air flow direction entering the housing 1 fixed, and make the air flow quickly and sufficiently, so as to promptly take away the heat generated by the mainboard 2 and the optical machine 3 and improve the heat dissipation efficiency of the projector; the first ventilation mechanism 5 can not only guide the air flow direction, but also accelerate the air flow rate in the radiator 4. Compared with multiple fans that respectively complete the guiding and accelerating functions, the internal space occupied by the housing 1 is saved, and the flexibility of the position distribution of components such as the optical machine 3 and the radiator 4 is increased; because the air in the housing 1 can form a fixed flow direction after passing through the first ventilation mechanism 5 and the second ventilation mechanism 6, the resistance to air circulation is reduced, thereby reducing the noise of the first ventilation mechanism 5 and the second ventilation mechanism 6.

[0044] Specifically, see Figure 1 and Figure 2 The housing 1 includes a lower shell 12 and an upper shell 11 covering the lower shell 12, which is convenient for installing components such as the first ventilation mechanism 5, the optical engine 3, and the mainboard 2.

[0045] Further, see Figure 2 and Figure 4 As a specific embodiment of the projector provided by the present invention, the radiator 4 is arranged in the shell 1, and a first ventilation hole 121 is provided in the shell 1 at a position opposite to the first air outlet. The radiator 4 is protected by the shell 1 to prevent external force from impacting the radiator 4 and damaging the radiator 4, while improving the integrity of the projector and enhancing the user experience; the air blown through the radiator 4 from the first air outlet is discharged out of the shell 1 in time through the first ventilation hole 121, reducing the accumulation of hot air in the shell 1 and affecting the service life of the projector.

[0046] Further, see Figure 2 and Figure 4 As a specific embodiment of the projector provided by the present invention, a third air inlet is further provided on the first ventilation mechanism 5, and the third air inlet is used to inhale air outside the shell 1 to increase the air intake volume entering the first ventilation mechanism 5 and increase the proportion of cold air entering the first ventilation mechanism 5, so that the air output volume of the first air outlet is increased, thereby improving the cooling effect of the first ventilation mechanism 5 on the radiator 4 when blowing through the radiator 4.

[0047] Further, see Figure 1 、 Figure 2 and Figure 4 As a specific embodiment of the projector provided by the present invention, the first ventilation mechanism 5 and the second ventilation mechanism 6 are both arranged in the housing 1, so that the first ventilation mechanism 5 and the second ventilation mechanism 6 are protected by the housing 1, thereby preventing the first ventilation mechanism 5 and the second ventilation mechanism 6 from being impacted by foreign objects and affecting the normal operation of the first ventilation mechanism 5 and the second ventilation mechanism 6, thereby reducing the failure rate of the first ventilation mechanism 5 and the second ventilation mechanism 6;

[0048] The housing 1 is provided with a second ventilation hole 122 at a position opposite to the second air inlet 61, so that the second ventilation mechanism 6 can draw cold air from outside the housing 1 through the second ventilation hole 122 and then blow the cold air toward the mainboard 2 through the second air outlet 62, thereby improving the heat dissipation efficiency of the mainboard 2;

[0049] A third ventilation hole is provided in the shell 1 at a position opposite to the third air inlet, so that the first ventilation mechanism 5 can inhale cold air from outside the shell 1 through the third ventilation hole, and then blow the cold air through the radiator 4 through the first air outlet, thereby improving the heat dissipation efficiency of the radiator 4.

[0050] Further, see Figure 4As a specific embodiment of the projector provided by the present invention, the first air outlet is directed away from the light emitting direction of the optical machine 3 to ensure the projection effect of the optical machine 3 and to avoid the dust in the air passing through the radiator 4 after the first air outlet blows air toward the radiator 4 to block the projection light path of the optical machine 3 and affect the projection effect of the optical machine 3. At the same time, it is also convenient to install the first ventilation mechanism 5.

[0051] Further, see Figure 3 and Figure 4 As a specific embodiment of the projector provided by the present invention, the first ventilation mechanism 5, the radiator 4 and the second ventilation mechanism 6 are each provided with two, and the first ventilation mechanism and the radiator 4 correspond one to one;

[0052] The two second ventilation mechanisms 6 are distributed on the left and right sides of the main board 2;

[0053] The two first ventilation mechanisms 5 are both provided below the main board 2 and between the two second ventilation mechanisms 6;

[0054] The radiator 4 is arranged below the mainboard 2 and on the rear side of the optical engine 3 for a reasonable layout, making the installation of the first ventilation mechanism 5, the optical engine 3 and the radiator 4 more compact; at the same time, the heat-generating components on the optical engine 3 and the mainboard 2 are located in the air flow channel, making the air flow rate on their surface faster, thereby improving the heat dissipation efficiency of the projector.

[0055] The heat sink 4 is installed on the optical engine 3 to improve the heat dissipation efficiency of the optical engine 3 .

[0056] Further, see Figure 1 and Figure 4 As a specific embodiment of the projector provided by the present invention, the second air inlet 61 is oriented to avoid the light emitting direction of the optical machine 3, thereby ensuring the projection effect of the optical machine 3 and preventing dust in the inhaled air from blocking the projection light path of the optical machine 3 when the second ventilation mechanism 6 inhales air, thereby affecting the projection effect of the optical machine 3.

[0057] Further, see Figure 3 and Figure 4 As a specific embodiment of the projector provided by the present invention, all the second ventilation mechanisms 6 are symmetrically distributed on both sides of the main board 2. The space on both sides of the main board 2 is large, which is convenient for installing the second ventilation mechanisms 6 and avoids the interference of the optical machine 3 with the installation of the second ventilation mechanisms 6; and can make the air blown out by the second ventilation mechanisms 6 on both sides of the main board 2 converge and be sucked into the first ventilation mechanism 5 to form an air duct, avoiding the situation where the positions of the second ventilation mechanisms 6 on both sides of the main board 2 are asymmetrically distributed, and the second ventilation mechanisms 6 directly blow air to the other side of the main board 2, thereby affecting the air intake of the first ventilation mechanism 5, and also affecting the formation of the air duct between the main board 2 and the first ventilation mechanism 5.

[0058] Further, see Figure 3 and Figure 4 As a specific embodiment of the projector provided by the present invention, the first air inlet 51 and all the second air outlets 62 are vertically aligned so that the air blown toward the mainboard 2 by the second ventilation mechanism 6 can just be attracted by the first ventilation mechanism 5, thereby preventing the air duct formed by the air discharged from the second air outlet 62 from deviating too far from the air inlet channel of the first ventilation mechanism 5, thereby affecting the air intake amount entering the first ventilation mechanism 5.

[0059] Furthermore, as a specific embodiment of the projector provided by the present invention, the first ventilation mechanism 5 is a turbo fan;

[0060] The second ventilation mechanism 6 is an axial flow fan. Turbofans and axial flow fans are low in price, high in air intake and blowing efficiency, and easy to install.

[0061] See also Figure 4 , the air flow direction in the embodiment of the present invention is now described in detail:

[0062] The second ventilation mechanism 6 draws cold air from outside the shell 1 and blows it toward the mainboard 2, wherein most of the air is blown to the bottom of the mainboard 2, and a small part is blown to the top of the mainboard 2, taking away the heat on the mainboard 2; the air blown to the bottom of the mainboard 2 by the second ventilation mechanism 6 is drawn by the first air inlet 51 on the first ventilation mechanism 5 through the optical engine 3, taking away part of the heat on the optical engine 3, and at the same time, the third air inlet on the first ventilation mechanism 5 draws cold air from outside the shell 1, blows it toward the radiator 4 through the first air outlet on the first ventilation mechanism 5, and takes the heat on the radiator 4 out of the shell 1; the radiator 4 is used to take away part of the heat on the optical engine 3.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A projector comprising a housing, a mainboard, and an optical engine, wherein the mainboard and the optical engine are disposed within the housing, and characterized in that: Also included is a radiator, a first ventilation mechanism, and a plurality of second ventilation mechanisms; The first ventilation mechanism is provided with a first air inlet and a first air outlet, and the second ventilation mechanism is provided with a second air inlet and a second air outlet; The first ventilation mechanism is arranged above or below the main board, and the first air inlet faces the main board; The optical engine is disposed between the mainboard and the first ventilation mechanism; the heat sink is disposed on the optical engine and faces the first air outlet; the first air outlet is used to discharge the air entering the first ventilation mechanism out of the housing; All the second ventilation mechanisms are disposed on opposite sides of the main board, the second air outlets are used to discharge the air entering the second ventilation mechanisms to the upper and lower sides of the main board, and the second air inlet is used to inhale air outside the housing; The first ventilation mechanism is further provided with a third air inlet, and the third air inlet is used to inhale air outside the shell; The first ventilation mechanism and the second ventilation mechanism are both arranged in the housing; A second ventilation hole is provided on the housing at a position opposite to the second air inlet; A third ventilation hole is provided on the housing at a position opposite to the third air inlet; Air on the same side of the mainboard as the first ventilation mechanism is drawn by the first ventilation mechanism through the optical engine, enters the first ventilation mechanism, passes through the heat sink, and is discharged out of the housing, thereby increasing air flow speed on the surface of the optical engine and the heat sink fin surface of the heat sink; There are two of each of the first ventilation mechanism and the second ventilation mechanism, and the two second ventilation mechanisms are distributed on the left and right sides of the main board; the two first ventilation mechanisms are located between the two second ventilation mechanisms; All the second ventilation mechanisms are symmetrically distributed on both sides of the main board; The first air inlet and all the second air outlets are vertically aligned.

2. The projector according to claim 1, wherein: The radiator is arranged in the shell, and a first ventilation hole is provided in the shell at a position opposite to the first air outlet.

3. The projector according to claim 1, wherein: The first air outlet faces a direction away from the light emitting direction of the light engine.

4. The projector according to claim 1, wherein: There are two radiators, and the first ventilation mechanisms correspond to the radiators in a one-to-one manner; The two first ventilation mechanisms are both arranged below the main board; The heat sink is arranged below the mainboard and located at the rear side of the optical engine.

5. The projector according to claim 1, wherein: The second air inlet is oriented to avoid the light emitting direction of the light engine.

6. The projector according to claim 1, wherein: The first ventilation mechanism is a turbo fan; The second ventilation mechanism is an axial flow fan.

Images