Projector with built-in heat dissipation channel
By setting up sealed heat dissipation chamber and heat dissipation fins in the projector, combined with the inner and outer air ducts, the problems of dust adhesion and local temperature caused by direct fan blowing are solved, and effective LCD screen heat dissipation and clear projection screen are achieved.
Patent Information
- Application Number
- CN202422417359.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-08
AI Technical Summary
When the existing projector blows the LCD screen directly and cools down through the fan, external dust will stick to it, causing blurred projection screen. At the same time, the temperature of the LCD screen is high near the light source, and the direct blowing and cooling effect is not good.
A projector with built-in heat dissipation channel is designed, and a sealed heat dissipation chamber, secondary heat dissipation fins and main heat dissipation fins are used to cool the front and rear sides of the LCD screen, and heat dissipation is transferred using a heat dissipation fan to avoid dust adhesion, and effective heat dissipation is achieved through the inner and outer air ducts.
It effectively avoids dust adhesion, ensures that the temperature on both sides of the LCD screen decreases, and improves the clarity and heat dissipation effect of the projected screen.
Smart Images
Figure CN223155364U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of projector heat dissipation, and specifically relates to a projector with a built-in heat dissipation channel. Background Technique
[0002] A projector is an integrated projection device that projects an image by irradiating light onto an image display element through an optical system and then projects it through a lens. Currently, projectors mainly include a projection optical engine and a projection lens. The projection optical engine uses optical elements to project the content on the liquid crystal screen onto the projection lens and then displays it externally.
[0003] During actual use, a front Fresnel lens and a rear Fresnel lens are arranged on the front and rear sides of the internal liquid crystal screen. During use, a large amount of heat energy will be generated on the surface of the liquid crystal screen, and it needs to be cooled down. The current technical method is to install a fan to blow directly on it to achieve the cooling effect. However, in actual application, on the one hand, the direct blowing process will cause external dust to adhere to the display screen and the front and rear Fresnel lenses, resulting in a blurred projection image. On the other hand, the side of the liquid crystal screen close to the light source component has a higher surface temperature due to light irradiation, and the direct blowing cooling effect cannot meet the requirements. Therefore, a projector with a built-in heat dissipation channel is provided specifically to solve the above problems. Content of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the utility model provides a projector with a built-in heat dissipation channel, which solves the problems that when the liquid crystal screen is directly blown by a fan for cooling, on the one hand, external dust will adhere, resulting in a blurred projection image, and on the other hand, the side of the liquid crystal screen close to the light source component has a higher surface temperature due to light irradiation, and the direct blowing cooling effect cannot meet the requirements.
[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A projector with a built-in heat dissipation channel includes a housing and a projection lens installed at the front end of the housing. A projection optical engine is arranged inside the housing, and a heat dissipation mechanism is arranged between the projection optical engine and the projection lens;
[0006] The heat dissipation mechanism includes a sealed heat dissipation chamber, secondary heat dissipation fins, and primary heat dissipation fins;
[0007] The projection optical engine includes a light source component and a liquid crystal screen arranged at the end of the light source component;
[0008] The liquid crystal screen is arranged inside the sealed heat dissipation chamber;
[0009] The secondary heat dissipation fins and the primary heat dissipation fins are both installed on the side wall of the sealed heat dissipation chamber;
[0010] Inner air ducts and outer air ducts are respectively arranged on the front and rear sides of the liquid crystal screen;
[0011] The auxiliary heat dissipation fins are located on the inner air duct and are used to cool the front side of the liquid crystal screen.
[0012] Both the auxiliary heat dissipation fins and the main heat dissipation fins are located on the outer air duct and are used to cool the rear side of the liquid crystal screen.
[0013] Preferably, an exhaust groove is provided on one side of the outer housing, and a detachable exhaust grille is installed inside the exhaust groove.
[0014] Preferably, a button switch is installed on the top of the outer housing, and an interface module is installed on the inner top of the outer housing. Both the button switch and the interface module are electrically connected to the projection opto-mechanics.
[0015] Preferably, the light source component is fixed in the outer housing. A front Fresnel lens and a rear Fresnel lens are respectively installed on both sides of the liquid crystal screen, and a dichroic mirror is fixedly installed between the rear Fresnel lens and the projection lens.
[0016] Preferably, the heat dissipation mechanism further includes a heat dissipation fan fixedly arranged at the front end of the light source component. Light source heat dissipation fins are fixedly installed on the side of the light source component. The outer ends of the auxiliary heat dissipation fins, the outer ends of the main heat dissipation fins, and the light source heat dissipation fins are all located between the heat dissipation fan and the exhaust grille.
[0017] Preferably, the sealed heat dissipation chamber includes a side package, a top cover, a bottom shell, a heat insulation board, and an inner ventilation opening. The inner ventilation opening is opened at the top of the rear Fresnel lens. The side package, the top cover, and the bottom shell form a sealed cavity, and the heat insulation board is fixedly arranged below the top cover.
[0018] Preferably, the inner air duct is surrounded by the front of the liquid crystal screen, the rear Fresnel lens, and the inner ventilation opening.
[0019] Preferably, the outer air duct is surrounded by the front Fresnel lens, the back of the liquid crystal screen, the top cover, and the heat insulation board.
[0020] Preferably, an axial flow fan is fixedly installed on the upper surface of the bottom shell. The main heat dissipation fins are fixedly installed at the output end of the axial flow fan. The bottoms of the front Fresnel lens, the liquid crystal screen, and the rear Fresnel lens are all fixedly installed on the top of the main heat dissipation fins.
[0021] Preferably, the input end of the axial flow fan faces the auxiliary heat dissipation fins and the inner ventilation opening.
[0022] The utility model discloses a projector with a built-in heat dissipation channel, and the beneficial effects thereof are as follows: The device is provided with a sealed heat dissipation chamber between the projection optical engine and the projection lens, the liquid crystal screen is wrapped by the sealed heat dissipation chamber, main heat dissipation fins and auxiliary heat dissipation fins are arranged inside the sealed heat dissipation chamber, the main heat dissipation fins and the auxiliary heat dissipation fins extend to the outside to transfer heat outward, and then a heat dissipation fan is used for cooling to avoid the influence of dust on the liquid crystal screen. At the same time, inner and outer air ducts are arranged inside the sealed heat dissipation chamber, the inner air duct relies on the main heat dissipation fins to transfer heat outward, and the outer air duct relies on the combination of the main heat dissipation fins and the auxiliary heat dissipation fins to transfer heat outward, which are respectively applied to the front and rear sides of the liquid crystal screen, so as to effectively cool both sides of the liquid crystal screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0024] Figure 1 It is a schematic diagram of the overall outer surface structure of the present utility model;
[0025] Figure 2 It is a schematic diagram of the overall back structure of the present utility model;
[0026] Figure 3 It is a schematic diagram of the top structure of the projection optical engine and the heat dissipation mechanism of the present utility model;
[0027] Figure 4 It is a schematic diagram of the side structure of the projection optical engine and the heat dissipation mechanism of the present utility model;
[0028] Figure 5 It is a schematic diagram of the internal structure of the heat dissipation mechanism of the present utility model;
[0029] Figure 6 It is a schematic diagram of the internal structure of the sealed heat dissipation chamber of the present utility model.
[0030] In the figure: 1, outer shell; 2, projection lens; 3, button switch; 4, interface module; 5, exhaust slot; 6, exhaust grille; 7, projection optical engine; 71, light source component; 72, front Fresnel lens; 73, liquid crystal screen; 74, rear Fresnel lens; 75, 45-degree reflecting mirror; 8, heat dissipation mechanism; 81, heat dissipation fan; 82, sealed heat dissipation chamber; 821, side wrapping component; 822, top cover; 823, bottom shell; 824, heat insulation board; 825, inner ventilation opening; 83, auxiliary heat dissipation fins; 84, axial flow fan; 85, main heat dissipation fins; 86, light source heat dissipation fins. Detailed implementation manners
[0031] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0032] By providing a projector with a built-in heat dissipation channel in the embodiments of the present application, the problems are solved that when directly blowing air on the liquid crystal screen through a fan for cooling, on the one hand, external dust will adhere, resulting in a blurred projection image, and on the other hand, the surface temperature of the side of the liquid crystal screen close to the light source component is higher due to light irradiation, and the direct blowing cooling effect cannot meet the requirements.
[0033] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.
[0034] The embodiments of the present utility model disclose a projector with a built-in heat dissipation channel.
[0035] As shown in the attached Figure 1-6 figures, it includes a housing 1 and a projection lens 2 installed at the front end of the housing 1. A button switch 3 is installed on the top of the housing 1, an interface module 4 is installed on the inner top of the housing 1, an exhaust slot 5 is provided on one side of the housing 1, and a detachable exhaust grille 6 is installed inside the exhaust slot 5;
[0036] A projection optical machine 7 is provided inside the housing 1. The button switch 3 and the interface module 4 are both electrically connected to the projection optical machine 7. The projection optical machine 7 includes a light source component 71 fixed in the housing 1. A front Fresnel lens 72, a liquid crystal screen 73, a rear Fresnel lens 74 and a 45-degree reflecting mirror 75 are sequentially installed facing the output end of the light source component 71;
[0037] A heat dissipation mechanism 8 is provided between the projection optical machine 7 and the projection lens 2. The heat dissipation mechanism 8 includes a heat dissipation fan 81 installed on one side of the light source component 71, a sealed heat dissipation chamber 82, auxiliary heat dissipation fins 83, an axial flow fan 84, main heat dissipation fins 85 and light source heat dissipation fins 86;
[0038] A sealed heat dissipation chamber 82 is provided between the output end of the light source component 71 and the projection lens 2. The sealed heat dissipation chamber 82 includes a side wrapping component 821, a top cover 822, a bottom shell 823, a heat insulation plate 824, and an inner ventilation opening 825. The inner ventilation opening 825 is opened at the top of the rear Fresnel lens 74. The side wrapping component 821, the top cover 822, and the bottom shell 823 form a sealed cavity. The front Fresnel lens 72, the back surface of the liquid crystal screen 73, the top cover 822, and the heat insulation plate 824 enclose an outer air duct. The front surface of the liquid crystal screen 73, the rear Fresnel lens 74, and the inner ventilation opening 825 enclose an inner air duct. The outer air duct conducts two heat exchanges through the secondary heat dissipation fins 83 and the main heat dissipation fins 85, and the inner air duct conducts only one heat exchange through the main heat dissipation fins 85 to meet the different temperature difference heat dissipation requirements on the front and rear sides of the liquid crystal screen 73.
[0039] The heat dissipation fan 81 is fixedly arranged at the front end of the light source component 71. The secondary heat dissipation fins 83 and the main heat dissipation fins 85 are both installed on the side wall of the sealed heat dissipation chamber 82. The light source heat dissipation fins 86 are fixedly installed on the side of the light source component 71. The outer ends of the secondary heat dissipation fins 83, the outer ends of the main heat dissipation fins 85, and the light source heat dissipation fins 86 are all located between the heat dissipation fan 81 and the exhaust grille 6. The heat dissipation fan 81 is used to blow air to dissipate heat from all the heat dissipation components in the outer housing 1 and blow the heat out of the outer housing 1;
[0040] The axial flow fan 84 is fixedly installed on the upper surface of the bottom shell 823. The main heat dissipation fins 85 are fixedly installed at the output end of the axial flow fan 84. The bottom ends of the front Fresnel lens 72, the liquid crystal screen 73, and the rear Fresnel lens 74 are all fixedly installed on the top of the main heat dissipation fins 85. The input end of the axial flow fan 84 faces the secondary heat dissipation fins 83 and the inner ventilation opening 825. The air flows in the inner and outer air ducts are both sucked and circulated through the axial flow fan 84 and then flow through the main heat dissipation fins 85 for heat exchange.
[0041] By arranging the sealed heat dissipation chamber 82 between the projection optical engine 7 and the projection lens 2, the liquid crystal screen 73 is wrapped by the sealed heat dissipation chamber 82. The main heat dissipation fins 85 and the secondary heat dissipation fins 83 are arranged inside the sealed heat dissipation chamber 82, and the heat is transferred outward through the extension of the main heat dissipation fins 85 and the secondary heat dissipation fins 83 to the outside, and then the heat dissipation fan 81 is used for cooling to avoid the influence of dust on the liquid crystal screen 73. At the same time, inner and outer air ducts are arranged inside the sealed heat dissipation chamber 82. The inner air duct relies on the main heat dissipation fins 85 to transfer heat outward, and the outer air duct relies on the combination of the main heat dissipation fins 85 and the secondary heat dissipation fins 83 to transfer heat outward, which are respectively applied to the front and rear sides of the liquid crystal screen 73, so as to effectively cool both sides of the liquid crystal screen 73.
[0042] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A projector with built-in heat dissipation channels, comprising a housing (1) and a projection lens (2) mounted at the front end of the housing (1). A projection optical engine (7) is provided inside the housing (1), characterized in that, A heat dissipation mechanism (8) is provided between the projection optical machine (7) and the projection lens (2); The heat dissipation mechanism (8) includes a sealed heat dissipation chamber (82), secondary heat dissipation fins (83) and primary heat dissipation fins (85); The projection optical machine (7) includes a light source component (71) and a liquid crystal screen (73) arranged at the end of the light source component (71); The liquid crystal screen (73) is arranged inside the sealed heat dissipation chamber (82); Both the secondary heat dissipation fins (83) and the primary heat dissipation fins (85) are installed on the side wall of the sealed heat dissipation chamber (82); Inner air ducts and outer air ducts are respectively arranged on the front and rear sides of the liquid crystal screen (73); The secondary heat dissipation fins (83) are located on the inner air duct and are used to cool the front side of the liquid crystal screen (73); Both the secondary heat dissipation fins (83) and the primary heat dissipation fins (85) are located on the outer air duct and are used to cool the rear side of the liquid crystal screen (73).
2. The projector with a built-in heat dissipation channel according to claim 1, wherein: An exhaust groove (5) is arranged on one side of the outer housing (1), and a detachable exhaust grille (6) is installed inside the exhaust groove (5).
3. The projector with a built-in heat dissipation channel according to claim 1, characterized in that: A button switch (3) is installed on the top of the outer housing (1), and an interface module (4) is installed on the inner top of the outer housing (1). Both the button switch (3) and the interface module (4) are electrically connected to the projection optical machine (7).
4. The projector with a built-in heat dissipation channel according to claim 1, characterized in that: The light source component (71) is fixed in the outer housing (1). A front Fresnel lens (72) and a rear Fresnel lens (74) are respectively installed on both sides of the liquid crystal screen (73). A 45-degree reflecting mirror (75) is fixedly installed between the rear Fresnel lens (74) and the projection lens (2).
5. The projector with a built-in heat dissipation channel according to claim 2, characterized in that: The heat dissipation mechanism (8) further includes a heat dissipation fan (81) fixedly arranged at the front end of the light source component (71). A light source heat dissipation fin (86) is fixedly installed on the side of the light source component (71). The outer ends of the secondary heat dissipation fins (83), the outer ends of the primary heat dissipation fins (85) and the light source heat dissipation fin (86) are all located between the heat dissipation fan (81) and the exhaust grille (6).
6. The projector with a built-in heat dissipation channel according to claim 4, characterized in that: The sealed heat dissipation chamber (82) includes a side wrapping part (821), a top cover (822), a bottom shell (823), a heat insulation board (824) and an inner ventilation opening (825). The inner ventilation opening (825) is opened at the top of the rear Fresnel lens (74). The side wrapping part (821), the top cover (822) and the bottom shell (823) form a sealed cavity, and the heat insulation board (824) is fixedly arranged below the top cover (822).
7. The projector with a built-in heat dissipation channel according to claim 6, characterized in that: The inner air duct is formed by enclosing the front surface of the liquid crystal screen (73), the rear Fresnel lens (74) and the inner ventilation opening (825).
8. The projector with a built-in heat dissipation channel according to claim 6, wherein: The outer air duct is formed by enclosing the front Fresnel lens (72), the back surface of the liquid crystal screen (73), the top cover (822) and the heat insulation board (824).
9. The projector with a built-in heat dissipation channel according to claim 6, characterized in that: An axial flow fan (84) is fixedly installed on the upper surface of the bottom shell (823). The primary heat dissipation fins (85) are fixedly installed at the output end of the axial flow fan (84). The bottom ends of the front Fresnel lens (72), the liquid crystal screen (73) and the rear Fresnel lens (74) are all fixedly installed on the top of the primary heat dissipation fins (85).
10. A projector with a built-in heat dissipation channel according to claim 9, characterized in that: The input end of the axial flow fan (84) faces the secondary heat dissipation fins (83) and the inner ventilation opening (825).