Heat dissipation air duct device for projector
By designing a heat dissipation air duct device with closed circulation channels in the projector, and using components such as turbofans and optical lenses, the problem that existing projector heat dissipation devices cannot effectively prevent dust and overheat are solved, achieving efficient cooling and safe use.
Patent Information
- Application Number
- CN202323360849.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-11
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-11
AI Technical Summary
The heat dissipation devices of existing projectors have problems such as inability to effectively prevent dust, obstructed ventilation, and poor heat dissipation effects.
A heat dissipation air duct device for projectors is designed. By forming a heat conduction heat dissipation air duct in the product space, a closed circulation channel is formed, and a turbofan, optical lens, LCD screen, heat insulation board and exchange radiator are assembled into a surrounding. The first heat dissipation channel and the second heat dissipation channel achieve efficient cooling.
The device achieves efficient cooling, avoids dust interference, reduces noise and temperature, and improves safety of use.
Smart Images
Figure CN222461878U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of projectors, in particular to a heat dissipation air duct device for projectors. Background Art
[0002] At present, most projector cooling devices use open cooling devices, that is, adding fans and simple filters to blow directly to cool. This cooling structure has the following problems:
[0003] 1. Failure to effectively prevent dust will cause dust to accumulate inside the machine and on the optical lenses in a short period of time, affecting the image quality.
[0004] 2. Due to dust accumulation on the filter, ventilation is blocked and the machine overheats, causing many other problems. The filter also needs to be replaced regularly.
[0005] In order to overcome the above defects, there are also machines on the market that use die-casting as a sealing method. However, due to process limitations, there are defects such as thick walls of die-cast aluminum parts, poor heat dissipation and high costs.
[0006] Therefore, it is urgent to provide a heat dissipation duct device for a projector to overcome the above defects. Utility Model Content
[0007] The main purpose of the utility model is to provide a heat dissipation duct device for a projector, which effectively utilizes the product space to form a heat conduction heat dissipation duct to achieve the purpose of efficient cooling. The device has the characteristics of no dust interference, low noise and low temperature and high safety factor in use.
[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0009] A heat dissipation duct device for a projector, comprising:
[0010] The first heat dissipation channel is formed by a turbo fan, an optical lens, an LCD screen, a heat shield and an exchange radiator which are arranged in parallel with a gap and are assembled according to the airflow direction. The airflow is driven by the turbo fan and pushes the heat to the exchange radiator through the optical lens, the LCD screen and the surface of the heat shield. The exchange radiator conducts the heat inside to the outside.
[0011] The second heat dissipation channel, which forms a closed circulation channel with the first heat dissipation channel, is formed by the screen bracket, the front optical lens and the exchange heat sink according to the airflow direction, or is formed by the left / right exchange heat dissipation channel connecting the exchange heat sink and the turbo fan;
[0012] The heat outside the exchange radiator is dissipated to the outside of the machine by a fan.
[0013] Preferably, the turbofan and the exchange radiator are installed on both sides of the high temperature source, the optical lens, the LCD screen and the heat insulation plate are arranged between the turbofan and the exchange radiator and have gaps therebetween, and the airflow flows to the exchange radiator through the gap between the optical lens and the heat insulation plate and the gap between the heat insulation plate and the LCD screen.
[0014] Preferably, the fan is installed beside the high temperature source, adjacent to the exchange radiator, and disposed at the lower end of one side of the exchange radiator.
[0015] Preferably, the turbo fan, the optical lens, the LCD screen and the exchange radiator are in an inverted L shape after being assembled.
[0016] Preferably, the screen bracket is arranged above the LCD screen, and the front optical lens is installed on the screen bracket opposite to the LCD screen.
[0017] Preferably, the inner side of the second exchange radiator abuts against the outer side of the turbo fan, and the airflow flows toward the second exchange radiator through the gap between the screen bracket and the front optical lens.
[0018] Preferably, the exchange radiator and the second exchange radiator both include a plurality of fins.
[0019] Preferably, the optical lens includes: a front optical lens and a rear optical lens, which are arranged in sequence from the high temperature source to the lens direction: the rear optical lens, the heat insulation board, the LCD screen and the front optical lens, and the airflow flows to the exchange radiator through the gap between the rear optical lens and the heat insulation board, the gap between the heat insulation board and the LCD screen, and the gap between the LCD screen and the front optical lens.
[0020] Preferably, the left / right exchange heat dissipation channel includes: a left / right heat dissipation pipe arranged on both sides of the high temperature source, with a hollow inlet abutting against the exchange radiator and an outlet conducting to the turbo fan.
[0021] Preferably, the left / right heat dissipation pipes are both in the shape of a hollow triangle and / or cylinder.
[0022] The beneficial effects of the utility model are as follows: the heat dissipation duct device for the projector is formed by a reasonable structural setting to form the first heat dissipation channel and the second heat dissipation channel which are mutually connected to form a closed circulation channel. The heat is first dissipated in the channel through the exchange radiator and the fan, and then the heat is secondly dissipated through the exchange radiator 2 / exchange heat dissipation channel left / right of the second heat dissipation channel, so that the structure has the effect of shunting heat conduction and heat dissipation. The structural setting can effectively utilize the product space to form a heat conduction heat dissipation duct and achieve the purpose of efficient cooling. The sealed circulation channel structure setting makes the device have the characteristics of dust-free interference, low noise and low temperature and high safety factor in use. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a cross-sectional view of an embodiment of a heat dissipation duct device for a projector according to the utility model.
[0024] Figure 2 for Figure 1 Structural breakdown diagram.
[0025] Figure 3 A structural exploded view of another embodiment of a heat dissipation duct device for a projector.
[0026] Figure 4 for Figure 3 Cross-sectional view of an embodiment.
[0027] Description of the figure numbers in the manual:
[0028] 1-turbo fan, 2-rear optical lens, 3-LCD screen, 4-heat shield, 5-exchange radiator, 6-first heat dissipation channel, 7-fan, 8-screen bracket, 9-front optical lens, 10-exchange radiator two, 11-second heat dissipation channel, 01-turbo fan, 02-rear optical lens, 03-LCD screen, 04-heat shield, 05-exchange radiator, 06-first heat dissipation channel, 07-fan, 09-front optical lens, 010-exchange heat dissipation channel left / right, 011-second heat dissipation channel, a-high temperature source. DETAILED DESCRIPTION
[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0030] It should be noted that when an element is referred to as being “connected to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element.
[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.
[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] Embodiment 1:
[0035] See also Figure 1 and Figure 2, the direction of the dotted arrow is the air flow direction, the heat dissipation duct device for the projector of this embodiment includes: a turbo fan 1, a rear optical lens 2, an LCD screen 3, a heat shield 4, an exchange radiator 5, a first heat dissipation channel 6, a fan 7, a screen bracket 8, a front optical lens 9, an exchange radiator 2 10 and a second heat dissipation channel 11, wherein the first heat dissipation channel 6 is assembled and surrounded by the turbo fan 1, the rear optical lens 2, the LCD screen 3, the heat shield 4 and the exchange radiator 5 which are provided with a gap and installed in parallel according to the air flow direction, and the air flow is driven by the turbo fan 1, and the heat is pushed out through the surface of the rear optical lens 2, the LCD screen 3 and the heat shield 4. The heat is sent to the exchange radiator 5, and the exchange radiator 5 conducts the inner heat to the outer side, and then the heat on the outer side of the exchange radiator 5 is blown out by the fan 7. The airflow inlet direction of the second heat dissipation channel 11 is connected with the first heat dissipation channel 6, and the outlet direction is connected with the turbofan 1. The second heat dissipation channel 11 is formed by the screen bracket 8, the front optical lens 9 and the exchange radiator 2 10 according to the airflow flow direction. The screen bracket 8 is arranged above the LCD screen 3, and the front optical lens 9 is installed on the screen bracket 8 opposite to the LCD screen 3. The screen bracket 8 and the front optical lens 9 enclose part of the second heat dissipation channel 11. Specifically, the first heat dissipation channel 6 and the second heat dissipation channel 11 form a closed circulation channel loop. More specifically, the overnight board 4 is a heat-insulating glass.
[0036] The turbofan 1 and the exchange radiator 5 of this embodiment are installed on both sides of the high temperature source, the rear optical lens 2, the LCD screen 3 and the heat shield 4 are arranged between the turbofan 1 and the exchange radiator 5 and there is a gap between them, the airflow flows to the exchange radiator 5 through the gap between the rear optical lens 2 and the heat shield 4, and the gap between the heat shield 4 and the LCD screen 3, the exchange radiator 5 includes a plurality of fins, due to the excellent thermal conductivity of aluminum metal, the heat is quickly transferred from the inner fins to the outer fins, the fan 7 is installed beside the high temperature source, adjacent to the exchange radiator 5 and arranged at the lower end of one side of the exchange radiator 5, the fan 7 blows away the heat. In a preferred embodiment, the turbofan 1, the rear optical lens 2, the LCD screen 3 and the exchange radiator 5 are in an inverted L shape after being assembled.
[0037] The inner side of the exchange radiator 2 10 abuts against the outer side of the turbo fan 1, and the airflow flows to the exchange radiator 2 10 through the gap between the screen bracket provided above the rear optical lens 2, the LCD screen 3, and the heat insulation board 4 and the front optical lens 9. The exchange radiator 2 10 includes a plurality of fins. Due to the excellent thermal conductivity of aluminum metal, the heat is quickly transferred from the inner fins to the outer fins and then the heat is discharged.
[0038] In the heat dissipation duct device of this embodiment, the turbofan 1 drives the airflow thrust, pushes the heat between the LCD screen 3, the heat insulation board 4 and the rear optical lens 2 to the inner fins of the exchange radiator 5, and uses the excellent thermal conductivity of aluminum metal to quickly conduct the heat to the outer fins of the exchange radiator 5, and then the fan 7 evacuates the heat of the outer fins of the exchange radiator 5 to the outside of the machine; the gas after the first cooling is guided to the inner fins of the exchange radiator 10 through the second heat dissipation channel 11, and the heat of the inner fins of the exchange radiator 10 is quickly conducted to the outer fins of the exchange radiator 10 and dissipated to the outside of the machine, and the airflow after the second cooling flows into the turbofan 1, and the cycle is repeated to achieve the purpose of temperature control of the LCD screen 3 in a closed state. This device uses the product space to form a heat conduction heat dissipation duct to achieve the purpose of efficient cooling. This device has the characteristics of dust-free interference, low noise and low temperature, and high safety factor.
[0039] Embodiment 2:
[0040] See also Figure 3 and Figure 4 , the direction of the dotted arrow is the air flow direction, the heat dissipation duct device for the projector of this embodiment includes: a turbo fan 01, a rear optical lens 02, an LCD screen 03, a heat shield 04, an exchange radiator 05, a first heat dissipation channel 06, a fan 07, a front optical lens 09, a left / right exchange heat dissipation channel 010 and a second heat dissipation channel 011, wherein the first heat dissipation channel 06 is assembled and surrounded by the turbo fan 01, the rear optical lens 02 with a gap and installed in parallel, the LCD screen 03, the heat shield 04, the exchange radiator 05 and the front optical lens 09 according to the air flow direction, and the air flow is driven by the turbo fan 01, The airflow flows to the exchange radiator 05 through the gap between the rear optical lens 02 and the heat shield 04, the gap between the heat shield 04 and the LCD screen 03, and the gap between the LCD screen 03 and the front optical lens 09. The exchange radiator 05 conducts the heat from the inside to the outside, and then the heat from the outside of the exchange radiator 05 is blown out by the fan 07. The airflow inlet direction of the second heat dissipation channel 011 is connected to the first heat dissipation channel 06, and the outlet direction is connected to the turbo fan 01. The second heat dissipation channel 011 is formed by the exchange heat dissipation channel left / right 010 connecting the exchange radiator 05 and the turbo fan 01. Specifically, the first heat dissipation channel 06 and the second heat dissipation channel 011 form a closed circulation channel loop.
[0041] In this embodiment, from the high temperature source a toward the lens direction, it is arranged in sequence as: the rear optical lens 02, the heat insulation plate 04, the LCD screen 03 and the front optical lens 09. The airflow flows through the gap between the rear optical lens 02 and the heat insulation plate 04, the gap between the heat insulation plate 04 and the LCD screen 03, and the gap between the LCD screen 03 and the front optical lens 09 to the exchange radiator 05. The exchange radiator 05 includes a plurality of fins. Due to the excellent thermal conductivity of aluminum metal, heat is quickly transferred from the inner fins to the outer fins, and the fan 02 blows the heat of the outer fins out of the machine.
[0042] The left / right exchange heat dissipation channel 010 in this embodiment includes: a left / right heat dissipation pipe arranged on both sides of the high temperature source a, with a hollow inlet abutting the exchange heat sink 05 and an outlet connected to the turbo fan 01, and the left / right heat dissipation pipes are both hollow triangles. Specifically, the left heat dissipation pipe and the right heat dissipation pipe are axially symmetrically installed on both sides of the high temperature source a, one end is connected to the exchange heat sink 05 by a fixed frame, and the other end is connected to the turbo fan 01, and the left heat dissipation pipe and the right heat dissipation pipe both include a number of fins. When the hot air flows through the hollow structure inside, due to the excellent thermal conductivity of aluminum metal, the heat is quickly transferred from the inner fin to the outer fin to drain the heat away.
[0043] The heat dissipation duct device for the projector of this embodiment, driven by the turbofan 01, generates airflow thrust to push the heat between the front optical lens 05, LCD screen 03, heat insulation board 04 and rear optical lens 02 to the inner fins of the exchange radiator 05. The heat is quickly transferred to the outer fins of the exchange radiator 05 by using the excellent thermal conductivity of aluminum metal. Then, the heat of the outer fins of the exchange radiator 05 is evacuated to the outside of the machine by the fan 7. After the first cooling, the gas is guided to the inner wall and fins of the left / right exchange heat dissipation channel 010. Similarly, the heat of the inner fins of the left / right exchange heat dissipation channel 010 is quickly transferred to the outer fins of the left / right exchange heat dissipation channel 010 and dissipated to the outside of the machine. After the second cooling, the airflow flows into the turbofan 01. Such a cycle is repeated to achieve the purpose of controlling the temperature of the LCD screen 03 in a closed state. This device uses the product space to form a heat conduction heat dissipation duct to achieve the purpose of efficient cooling. This device has the characteristics of dust-free interference, low noise and low temperature, and high safety factor.
[0044] In summary, combined with Table 1 (test data of the heat dissipation duct device for projectors at normal temperature) and Table 2 (test data of the heat dissipation duct device for projectors at 42° high temperature), the structural setting of the utility model makes the projector have better performance and higher safety factor.
[0045]
[0046] Table 1
[0047]
[0048] Table 2
[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
[0050] The scope of protection required by the present utility model is defined by the attached claims and their equivalents.
Claims
1. A heat dissipation duct device for a projector, characterized in that: include: The first heat dissipation channel is formed by a turbo fan, an optical lens, an LCD screen, a heat shield and an exchange radiator which are arranged in parallel with a gap and are assembled according to the airflow direction. The airflow is driven by the turbo fan and pushes the heat to the exchange radiator through the optical lens, the LCD screen and the surface of the heat shield. The exchange radiator conducts the heat inside to the outside. The second heat dissipation channel, which forms a closed circulation channel with the first heat dissipation channel, is formed by the screen bracket, the front optical lens and the exchange heat sink according to the airflow direction, or is formed by the left / right exchange heat dissipation channel connecting the exchange heat sink and the turbo fan; The heat outside the exchange radiator is dissipated to the outside of the machine by a fan.
2. The heat dissipation duct device for a projector as claimed in claim 1, characterized in that: The turbofan and the exchange radiator are installed on both sides of the high temperature source, the optical lens, the LCD screen and the heat insulation plate are arranged between the turbofan and the exchange radiator and have gaps therebetween, and the airflow flows to the exchange radiator through the gap between the optical lens and the heat insulation plate and the gap between the heat insulation plate and the LCD screen.
3. The heat dissipation duct device for a projector as claimed in claim 2, characterized in that: The fan is installed beside the high temperature source, adjacent to the exchange radiator, and arranged at the lower end of one side of the exchange radiator.
4. The heat dissipation duct device for a projector as claimed in claim 2, characterized in that: The turbo fan, the optical lens, the LCD screen and the exchange radiator are assembled into an inverted L shape.
5. The heat dissipation duct device for a projector as claimed in claim 1, characterized in that: The screen bracket is arranged above the LCD screen, and the front optical lens is installed on the screen bracket opposite to the LCD screen.
6. The heat dissipation duct device for a projector according to any one of claims 1 to 5, characterized in that: The inner side of the second exchange radiator abuts against the outer side of the turbo fan, and the airflow flows toward the second exchange radiator through the gap between the screen bracket and the front optical lens.
7. The heat dissipation duct device for a projector as claimed in claim 1, characterized in that: The exchange radiator and the second exchange radiator both include a plurality of fins.
8. The heat dissipation duct device for a projector as claimed in claim 1, characterized in that: The optical lens includes: a front optical lens and a rear optical lens, which are arranged in sequence from the high temperature source to the lens direction: the rear optical lens, the heat insulation board, the LCD screen and the front optical lens, and the airflow flows to the exchange radiator through the gap between the rear optical lens and the heat insulation board, the gap between the heat insulation board and the LCD screen, and the gap between the LCD screen and the front optical lens.
9. The heat dissipation duct device for a projector as claimed in claim 8, characterized in that: The left / right exchange heat dissipation channel includes: a left / right heat dissipation pipeline arranged on both sides of the high temperature source, with a hollow inlet abutting against the exchange radiator and an outlet conducting to the turbo fan.
10. The heat dissipation duct device for a projector as claimed in claim 8, characterized in that: The left / right heat dissipation pipes are both in the shape of a hollow triangle and / or cylinder.