A projector with high heat dissipation efficiency

Abstract

The utility model discloses a projector of high -efficient heat dissipation can, shell is equipped with projection main part and heat dissipation structure in the shell, the heat dissipation structure includes heat exchanger and sets up turbine fan at the bottom of shell, is equipped with honeycomb grid net on the air outlet path of turbine fan, the honeycomb grid net includes the first concave and convex board and the second concave and convex board who connects alternately and surrounds honeycomb hole, is used for even dispersion the airflow that turbine fan produced, the projection main part includes LCD screen and optical assembly, and the LCD screen is parallel with optical assembly setting, and the heat exchanger sets up at the back of optical assembly, the shell is equipped with the air guide duct in, and the air guide duct guides the airflow that vortex flow fan produced to the positive and negative surface of LCD screen, and completes heat exchange through heat exchanger and reflows into the fan. The utility model reaches the beneficial effect is: effectively optimized the flow state of airflow in device, makes pressure distribution more uniform, thereby improved the overall performance and stability of device.

Description

Technical Field

[0001] This utility model relates to the field of pixel display technology, and in particular to a projector with efficient heat dissipation. Background Technology

[0002] Currently, the displays inside projectors generate a significant amount of heat during use. If this heat is not dissipated promptly, it can lead to overheating and damage to the LCD screen. Therefore, internal heat dissipation structures are typically incorporated, with the most common method being the use of cooling fans to cool the LCD screen. However, most projectors use fans to draw air from the LCD screen and then blow the hot air to a heatsink for cooling. This suction method is inefficient, and the low airflow intensity leads to heat concentration, making overheating a common problem. This concentrated airflow can cause excessive localized stress on the LCD surface, resulting in localized water ripple effects when displaying black levels, making blacks appear less dark in certain areas and severely impacting the quality of the projected image and the viewing experience. Therefore, a projector with efficient heat dissipation is proposed. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a projector with efficient heat dissipation, which effectively improves the heat conduction speed of the light source component during operation and the heat dissipation speed after heat conduction, so as to ensure the stable low-temperature operation of the LCD, thereby ensuring the working stability of the internal components of the projector.

[0004] The purpose of this utility model is to achieve a projector with efficient heat dissipation through the following technical solution, including a housing, a projection body and a heat dissipation structure inside the housing, the heat dissipation structure including a turbine fan disposed at the bottom of the housing; and a honeycomb grid is provided on the air outlet path of the turbine fan; The honeycomb grid includes multiple first and second concave-convex plates, which are alternately connected to form honeycomb holes for uniformly dispersing the airflow generated by the turbine fan. The heat dissipation structure also includes a heat exchanger, which is disposed on the back of the projection body; The projection body includes an LCD screen and an optical component. The LCD screen is arranged parallel to the optical component, and the heat exchanger is located on the back of the optical component. The housing is provided with a guide air duct, the air inlet of which is located at the honeycomb grid, and the tail end of which is located at the LCD screen.

[0005] Furthermore, the first and second concave-convex plates include multiple alternating connections, with the protrusions of adjacent first concave-convex plates and the concave portions of second concave-convex plates forming a honeycomb structure, and the two ends of each first concave-convex plate and the two ends of each second concave-convex plate respectively fixed to the frame of the housing.

[0006] Furthermore, the airflow duct includes a first airflow duct partition and a second airflow duct partition; the first airflow duct partition and the inner wall of the housing form a first heat dissipation airflow duct, and the first airflow duct partition and the second airflow duct partition form a second heat dissipation airflow duct; the tail ends of the first heat dissipation airflow duct and the second heat dissipation airflow duct are respectively disposed on the front and back sides of the LCD screen, for guiding airflow through and carrying away heat.

[0007] Furthermore, the airflow duct also includes a third airflow duct partition. The second airflow duct partition and the inner wall of the third airflow duct partition form a third heat dissipation airflow duct. The tail end of the third heat dissipation airflow duct is disposed in the optical component and is used to guide the heat-carrying airflow to the heat exchanger. The heat exchanger discharges the hot air from the machine body through the exhaust hole on the shell.

[0008] Furthermore, the honeycomb grid has hexagonal holes with a diameter of 3-8 mm and a thickness of 2-5 mm.

[0009] Furthermore, the optical component includes a reflector, and a heat exchanger is provided on the back of the reflector. The heat exchanger is fixedly connected to the back of the reflector by adhesive, and the outer surface of the heat exchanger is provided with heat dissipation fins.

[0010] This utility model has the following advantages: (1) This utility model generates airflow by starting the bottom turbine fan. The airflow is uniformly processed by the honeycomb grid to form a uniform and stable air field. The uniform airflow flows through the front and back of the LCD screen in sequence, carrying away the heat generated by its operation and avoiding local overheating and stress. It continues to flow to the heat exchanger on the back of the reflector, where the heat is dissipated, completing the entire heat dissipation cycle.

[0011] Furthermore, the airflow changes from turbulence to circulation after passing through the honeycomb grid, which can evenly blow cool air to all areas of the LCD screen, achieving uniform heat dissipation. This optimized heat dissipation structure and method can more efficiently remove the heat generated by key components inside the projector, ensuring stable operation of each component and extending the projector's lifespan.

[0012] (2) This utility model adopts a honeycomb grid mesh; On the one hand, the porous structure of the honeycomb grid can effectively disperse and guide airflow, reducing turbulence and eddies. The porous structure makes the airflow more stable, reducing local pressure concentration and sudden changes. Moreover, the porous structure can guide the airflow along a specific path, avoiding chaotic airflow inside the device. This guiding effect makes the airflow inside the device more orderly, reducing unnecessary pressure fluctuations. On the other hand, the structural design of the honeycomb grid can evenly disperse the airflow resistance, making the airflow encounter more uniform resistance when passing through the LCD. This uniform resistance distribution helps to reduce the pressure gradient, thereby making the overall pressure distribution more uniform; at the same time, it makes the airflow energy loss smaller when passing through, and the airflow speed and pressure can be better kept stable.

[0013] This invention effectively disperses the concentrated airflow from the turbine fan by setting a honeycomb grid, reduces local stress on the LCD screen surface, eliminates the local water ripple phenomenon in black screens, makes black screens more pure, and improves screen display quality. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram (top view) of the present invention. Figure 3 This is a structural diagram of the honeycomb grid mesh of this utility model; 1—Honeycomb grid, 2—Projection body, 3—Heat dissipation structure, 4—Shell, 11—First concave-convex plate, 12—Second concave-convex plate, 21—LCD screen, 22—Optical components, 23—Light source components, 31—Turbine fan, 32—Heat exchanger, 221—Reflector, 222—First Fresnel lens, 223—Polarizing mirror, 224—Second Fresnel lens, 51—First air duct partition, 52—Second air duct partition, 53—Third air duct partition. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0016] It should be noted that the orientation or positional relationship indicated by terms such as "left" and "right" is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this utility model is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. Such terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other. Example

[0018] See Figures 1-2A projector with efficient heat dissipation according to a specific embodiment of the present invention includes a housing 4, wherein a projection body 2 and a heat dissipation structure 3 are disposed within the housing 4, characterized in that: The heat dissipation structure 3 includes a heat exchanger 32 and a turbine fan 31 disposed at the bottom of the housing 4; a honeycomb grid 1 is provided on the air outlet path of the turbine fan 31; the honeycomb grid 1 includes alternating first and second concave and convex plates 11 forming honeycomb holes, which are used to uniformly disperse the airflow generated by the turbine fan 31; the honeycomb holes help to improve the pressure distribution when air flows through the device, making it more uniform and regular, thereby potentially improving the performance and stability of the device, and also helping to achieve a more uniform pressure distribution; The projection body 2 includes an LCD screen 21, an optical component 22, and a light source component 23. The light source component 23 is disposed adjacent to the optical component 22. The light source component 23 is prior art and will not be described in detail herein. The optical component 22 includes a reflector 221, a first Fresnel lens 222, a polarizer 223, and a second Fresnel lens 224. The first Fresnel lens 222, the LCD screen 21, the polarizer 223, and the second Fresnel lens 224 are arranged in parallel in sequence. The reflector 221 is set perpendicular to the second Fresnel lens 224. A heat exchanger 23 is provided on the back of the reflector 221. The heat exchanger 23 is fixedly connected to the back of the reflector 221, and the outer surface of the heat exchanger is provided with heat dissipation fins.

[0019] The housing 4 is provided with a guide air duct 5. The air inlet of the guide air duct 5 is located at the honeycomb grid 1, and the tail end of the guide air duct 5 is located at the LCD screen 22 and the optical component 22. The guide air duct 5 guides the airflow generated by the vortex fan 31 to the front and back of the LCD screen 21, and completes heat exchange through the heat exchanger 31 before flowing back into the fan 3.

[0020] The turbine fan 31 of this utility model is located at the bottom, and the honeycomb grid 1 is located on the air outlet path of the turbine fan 31. When the turbine fan 31 is working, the air blown out is evenly dispersed when it passes through the honeycomb grid 1. The dispersed air is guided by the air guide duct 5 to flow through the front and back of the LCD screen 21 respectively. The airflow carries the heat generated when the projection body 2 is working to the heat exchanger 23 on the back of the reflector 221 to carry away the heat.

[0021] like Figure 3 As shown, the honeycomb grid 1 includes a first convex-concave plate 11 and a second convex-concave plate 12. The protrusions of adjacent first convex-concave plates 11 and the concave portions of second convex-concave plates 12 form honeycomb holes. This is used to uniformly disperse the airflow generated by the turbine fan 31. Both ends of each first convex-concave plate 11 and both ends of each second convex-concave plate 12 are respectively fixed to the frame of the housing 4. The honeycomb holes of the honeycomb grid 1 are arranged in a hexagonal pattern, with a hole diameter of 3~8 mm and a thickness of 2~5 mm.

[0022] Furthermore, the airflow duct 5 includes a first airflow duct baffle 51 and a second airflow duct baffle 52; the first airflow duct baffle 51 and the inner wall of the housing 4 form a first heat dissipation airflow duct, and the first airflow duct baffle 51 and the second airflow duct baffle 52 form a second heat dissipation airflow duct; the tail ends of the first heat dissipation airflow duct and the second heat dissipation airflow duct are respectively disposed on the front and back sides of the LCD screen 21, for guiding airflow through and carrying away heat. The airflow duct 5 also includes a third airflow duct baffle 53, the second airflow duct baffle 52 and the inner wall of the third airflow duct baffle 53 form a third heat dissipation airflow duct, and the tail end of the third heat dissipation airflow duct is disposed in the second Fresnel lens 224 and the reflector 211, for guiding the heat-carrying airflow generated when the projection body 2 is working to the heat exchanger 23.

[0023] The above embodiments only illustrate preferred implementation methods, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A projector with efficient heat dissipation, comprising a housing (4), wherein the housing (4) contains a projection body (2) and a heat dissipation structure (3), characterized in that: The heat dissipation structure (3) includes a turbine fan (31) disposed at the bottom of the housing (4); a honeycomb grid (1) is provided on the air outlet path of the turbine fan (31); The honeycomb grid (1) includes a plurality of first concave-convex plates (11) and second concave-convex plates (12), and the alternating first concave-convex plates (11) and second concave-convex plates (12) form honeycomb holes; The heat dissipation structure also includes a heat exchanger (32), which is disposed on the back of the projection body (2); The projection body (2) includes an LCD screen (21) and an optical component (22). The LCD screen (21) is arranged in parallel in the optical component (22), and the heat exchanger (32) is arranged on the back of the optical component (22). The housing (4) is provided with a guide air duct (5), the air inlet of the guide air duct (5) is located at the honeycomb grid (1), and the tail end of the guide air duct (5) is located at the LCD screen (21).

2. The projector with efficient heat dissipation according to claim 1, characterized in that: The protrusions of adjacent first convex and concave plates (11) and the concave portions of second convex and concave plates (12) form a honeycomb structure. The two ends of each first convex and concave plate (11) and the two ends of each second convex and concave plate (12) are respectively fixed to the frame of the housing (4).

3. A projector with efficient heat dissipation according to claim 2, characterized in that: The airflow duct (5) includes a first airflow duct partition (51) and a second airflow duct partition (52); the first airflow duct partition (51) and the inner wall of the housing (4) form a first heat dissipation airflow duct, and the first airflow duct partition (51) and the second airflow duct partition (52) form a second heat dissipation airflow duct; the tail ends of the first heat dissipation airflow duct and the second heat dissipation airflow duct are respectively set on the front and back sides of the LCD screen (21).

4. A projector with efficient heat dissipation according to claim 3, characterized in that: The airflow duct (5) also includes a third airflow duct partition (53), the second airflow duct partition (52) and the inner wall of the third airflow duct partition (53) form a third heat dissipation airflow duct, and the tail end of the third heat dissipation airflow duct is disposed in the optical component (22).

5. A projector with efficient heat dissipation according to claim 2, characterized in that: The honeycomb grid (1) has hexagonal honeycomb holes with a diameter of 3~8 mm and a thickness of 2~5 mm.

6. A projector with efficient heat dissipation according to claim 1, characterized in that: The optical component (22) includes a reflector (221), and a heat exchanger (32) is provided on the back of the reflector (221). The heat exchanger (32) is fixedly connected to the back of the reflector (221) by adhesive, and the outer surface of the heat exchanger is provided with heat dissipation fins.

Images