CN115291460A - Cavity-divided projector with double heat dissipation systems - Google Patents

Abstract

The invention discloses a cavity-divided projector with dual heat dissipation systems, comprising an optical-mechanical casing (1), wherein the optical-mechanical casing (1) is divided into two cavities and forms two independent cavities, the two independent The chamber includes a first chamber (2) and a second chamber (3); the first chamber (2) is a closed chamber, and the second chamber (3) is an open chamber. The invention adopts the stacking assembly method, shortens the production time, increases the production efficiency, and divides the entire optical-mechanical housing into two independent chambers, so that they have their own heat dissipation systems, so that the optical components and the like can be ensured in a sealed manner. At the same time, it can ensure the heat dissipation. The independent open heat dissipation system is used to independently dissipate the heat of the LED light source, so that the light source and the optical components are set separately, the heat effect is small, the structure layout is more reasonable, and the service life of the whole machine is longer.

Description

A kind of sub-cavity projector with double cooling system

technical field

The invention relates to the field of projectors, in particular to a cavity-divided projector with a double cooling system.

Background technique

The projector is a commonly used optical product at present. A large number of optical components are used inside the projector. These optical components will generate a lot of heat when used. Since the distance between the components is small and the interior is a shared chamber, the heat The impact is greater, and the heat generated by the optical components will accumulate seriously. If the heat is not removed in time, it will reduce the service life of the projector, and it is prone to instability during use.

In addition, when assembling a traditional projector, first split it into two halves, install all the parts on one side, and then close the other side, because there are many parts, and when the cover is closed, all parts need to be aligned at the same time, and the assembly efficiency is very low.

Contents of the invention

The technical problem to be solved by the present invention is a split-cavity projector with a double heat dissipation system, which divides the inside of the projector into two mutually independent chambers, sets the light source and the optical module separately, and uses an aluminum extruded structure to make the optical The module can also effectively dissipate heat in a closed environment, which can solve the problem of heat dissipation while ensuring sealing. In addition, the light source end of the present invention is equipped with an open and independent heat dissipation system. This separately arranged heat dissipation system It can solve the overall heat dissipation of the optical machine very well, greatly reducing the influence of the heat source on the components, effectively prolonging the service life of the whole machine, and the overall assembly adopts a bottom-up stacking assembly method, which can effectively shorten the production hours , Increase production efficiency.

The present invention is achieved through the following technical proposals: a split-cavity projector with a dual heat dissipation system, comprising an optical-mechanical casing, the interior of the optical-mechanical casing is divided into two independent chambers, two independent The chamber comprises a first chamber and a second chamber;

The first chamber is a closed chamber, and the second chamber is an open chamber. The closed chamber adopts an internal circulation method and adopts aluminum extrusion radiation heat dissipation to dissipate the heat inside the first chamber to light. outside the machine; the open chamber uses a fan to draw outside air over the heat source and draw the hot air out of the light machine.

As a preferred technical solution, aluminum extrusions are provided on both sides of the first chamber and on one end surface of the optical machine housing, and an obliquely arranged reflector is arranged inside the optical machine housing close to the aluminum extrusion, far away from the reflector. A double-sided air inlet blower is installed in the inclined direction, and an optical module is installed at the air outlet of the double-sided air inlet blower, and the air inlet of the double-sided air inlet blower is set on the side close to the aluminum extrusion;

The hot air generated by the optical module is reintroduced into the air inlet of the double-sided air inlet blower after being radiated and cooled by the aluminum extrusion, and is blown from the air outlet of the double-sided air inlet blower to the optical module for cooling, thereby forming a closed Type circulating cooling air duct.

As a preferred technical solution, the optical module includes an anti-reflection polarized heat-insulating glass module, a liquid crystal display module, and a Fresnel lens. The lens is arranged in an oblique direction of the optical module, and the mirror is arranged obliquely on the Fresnel lens. output of the lens.

As a preferred technical solution, the air inlet end of the double-sided air inlet blower is larger than the air outlet end, so as to increase the wind pressure at the air outlet of the double-sided air inlet blower.

As a preferred technical solution, a conical concentrating unit is provided in the second chamber, an LED lamp is provided at the input end of the conical concentrating unit, the output end is facing the optical module of the first chamber, and the One side is provided with a first axial flow fan, and the other side of the second chamber away from the first axial flow fan is an air inlet opening. External cold air enters the second chamber through the air inlet opening, and is blown by the first axial flow. The fan draws hot air out from the outside, starting from the air inlet opening, passing through the entire second chamber and then exhausted by the first axial flow fan, thus forming a "one"-shaped open circulation heat dissipation channel.

As a preferred technical solution, the LED lamp is equipped with an LED heat dissipation module, and the heat dissipation is performed through the LED heat dissipation module.

As a preferred technical solution, the LED cooling module includes an aluminum alloy, a cooling copper tube and a cooling fin, the cooling fin is connected to the cooling copper tube, the other end of the cooling copper tube is connected to the aluminum alloy, and the LED lamp is installed on the aluminum alloy .

As a preferred technical solution, a second axial flow fan is provided on the outside of the optical machine housing opposite to the lens, and the output end of the second axial flow fan faces the aluminum extrusion and the air inlet opening of the second chamber.

The beneficial effects of the present invention are: the present invention arranges optical components, lens, etc. in a closed chamber, uses aluminum extrusion and a double-sided air intake blower, which can meet the heat dissipation requirements while ensuring sealing;

In the present invention, the components such as the light source are set separately from the light components and the lens, and two sets of heat dissipation systems are used for the independent heat dissipation of the closed chamber and the independent heat dissipation of the open chamber, so that the heat dissipation capacity of the whole system is greatly improved, and the use of the whole machine is effectively increased. life;

In addition, the backlight module, imaging module, and focus module of the present invention can be assembled directly in a stacked manner. Each module can be assembled independently or assembled online. The assembly method is stacked from bottom to top, which greatly saves assembly time and cost. , Independent module stacking assembly shortens production man-hours and increases production efficiency.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the overall external schematic diagram of the present invention;

Fig. 2 is a schematic view of the bottom structure of the present invention;

Fig. 3 is the internal sectional schematic view of the present invention;

FIG. 4 is a schematic structural view of the LED cooling module part of the present invention.

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

As shown in Fig. 3, a kind of sub-cavity projector with dual heat dissipation system of the present invention includes an optical machine housing 1, and the inner cavity of the optical machine housing 1 forms two independent chambers, two The independent chambers include a first chamber 2 and a second chamber 3;

The first chamber 2 is a closed chamber, and the second chamber 3 is an open chamber. The closed chamber uses an internal circulation method and adopts aluminum extrusion radiation to dissipate heat inside the first chamber 2. Outside the optomechanical housing; the open chamber uses a fan to draw outside air over the heat source and draw the hot air out of the optomechanical housing.

As shown in Figures 1 to 3, the optical machine housing 1 is located on both sides of the first chamber 2 and on one side of the end surface are provided with aluminum extrusions 4, and the optical machine housing 1 close to the aluminum extrusion 4 is provided with an obliquely arranged Reflector 5, a double-sided air inlet blower 13 is set away from the inclination direction of reflector 5, and an optical module is arranged at the air outlet end of double-sided air inlet blower 13, and the air inlet end of double-sided air inlet blower 13 is arranged near Aluminum extrusion 4 sides;

The hot air generated by the optical module is radiated and cooled by the aluminum extrusion 4, and then re-input to the air inlet end of the double-sided air inlet blower 13, and blown to the optical module by the air outlet end of the double-sided air inlet blower 13 to cool down, thereby A closed circulation cooling air duct is formed. See the direction of the hollow arrow in the first chamber in Fig. 3 for the closed circulation cooling air duct. As a power source, the air in the first chamber is circulated along the entire closed circulation cooling air duct. When the airflow is blown out from the double-sided air intake blower, the heat on the optical module is taken away, and then the hot air will be fully combined with the aluminum Squeeze contact, use aluminum extrusion to radiate the heat source to the outside, and the cooled gas is re-drawn into the double-sided air intake blower, so that the cycle achieves an internal cycle closed cooling process.

The working principle of aluminum extrusion is mainly to use the efficient heat dissipation characteristics of aluminum, because the greenhouse effect will continue to increase. Use the characteristics of aluminum extrusion to balance the internal temperature and external temperature, that is, when the internal temperature reaches 50 degrees, the temperature of aluminum extrusion will also be 50 degrees. , but when the external temperature is 30 degrees, the temperature on the aluminum extrusion will be brought into the air. Because there is no fan, the radiation effect of the aluminum extrusion is purely used to neutralize the external temperature, so the sealing can be effectively guaranteed.

Wherein, the optical module includes an anti-reflection polarization heat-insulating glass module 8, a liquid crystal display module 7 and a Fresnel lens 14, lenses are arranged in the diagonal direction of the optical module, and reflectors 5 are obliquely arranged on the Fresnel lens 14 output terminal.

The air inlet end of the double-sided air inlet blower 13 is larger than the air outlet end, so the wind pressure of the air outlet of the double-sided air inlet blower 13 is increased, and the heat dissipation efficiency is improved after increasing the wind pressure.

As shown in Fig. 3 , a conical concentrating unit 9 is arranged in the second chamber 3, an LED lamp 114 is arranged at the input end of the conical concentrating unit 9, and an output end is facing the optical module of the first chamber. One side of the chamber 3 is provided with a first axial flow fan 12, and the other side of the second chamber 3 away from the first axial flow fan 12 is an air inlet opening, and external cold air enters the second chamber 3 through the air inlet opening , and the first axial flow fan 12 draws hot air out from the outside, starting from the air inlet opening, passing through the entire second chamber 3 and then discharged by the first axial flow fan 12, thus forming a "one" shape Open circulation heat dissipation channel, the airflow direction of the open circulation heat dissipation channel is shown in the direction of the hollow arrow in the second chamber in Figure 3, the cold air is drawn in from the air inlet opening, and after passing through the entire LED heat dissipation module, the hot air is drawn from the second chamber An axial flow fan is drawn out to achieve an open heat dissipation process.

As shown in Figure 4, the LED lamp 114 is equipped with an LED heat dissipation module, and the heat dissipation is performed through the LED heat dissipation module. The LED heat dissipation module includes an aluminum alloy 113, a heat dissipation copper tube 112, and a heat dissipation fin 111. The tube 112 is connected, the other end of the heat dissipation copper tube 112 is connected with the aluminum alloy 113, and the LED lamp 114 is installed on the aluminum alloy 113; the high thermal conductivity of copper is used to directly contact the LED with the copper tube so that the capillary phenomenon of the copper tube will directly heat Conducted to the fin end to achieve the purpose of cooling the cooling module.

In order to increase the heat dissipation effect of the first chamber and the second chamber, a second axial flow fan 6 is arranged outside the optical machine housing 1 opposite to the lens, and the output end of the second axial flow fan 6 faces the aluminum extrusion 4 With the air inlet opening of the second chamber 3, the second axial flow fan is used to increase the heat dissipation capacity of the aluminum extrusion, and at the same time, part of the air flow can enter the second chamber to increase the air flow velocity and improve the heat dissipation efficiency.

The backlight module, imaging module, and focus module of the present invention can be directly stacked and assembled, and each module can be independently assembled or assembled online, and the assembly method is stacked from bottom to top, which greatly saves assembly time and cost. Module stacking assembly shortens production man-hours and increases production efficiency.

The above is only a specific implementation of the present invention, but the scope of protection of the present invention is not limited thereto, and any changes or replacements that do not come to mind through creative work shall be covered within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope defined in the claims.

Claims (8)

1. A cavity-divided projector with dual heat dissipation systems, characterized in that: it comprises an optical machine housing (1), and the inner cavity of the optical machine housing (1) forms two independent chambers, two An independent chamber comprises a first chamber (2) and a second chamber (3); The first chamber (2) is a closed chamber, and the second chamber (3) is an open chamber. The closed chamber uses an internal circulation method and uses aluminum extrusion radiation to dissipate heat from the first chamber. The internal heat of the chamber (2) is dissipated outside the optical machine housing; the open chamber uses a fan to pass the external air through the heat source and extract the hot air to the outside of the optical machine housing. 2. The split-cavity projector with dual heat dissipation system according to claim 1, characterized in that: the optical machine housing (1) is located on both sides of the first chamber (2) and on one end surface There is an aluminum extrusion (4), and an obliquely arranged reflector (5) is arranged inside the optical machine housing (1) close to the aluminum extrusion (4), and a double-sided air intake blower ( 13), the optical module is arranged at the air outlet end of the double-sided air inlet blower (13), and the air inlet end of the double-sided air inlet blower (13) is arranged on the side close to the aluminum extrusion (4); The hot air generated by the optical module is reintroduced into the air inlet end of the double-sided air inlet blower (13) after being radiated and cooled by the aluminum extrusion (4), and is blown to the optical module by the air outlet end of the double-sided air inlet blower (13). The group is cooled to form a closed circulation cooling air duct. 3. The split-cavity projector with dual cooling systems according to claim 2, characterized in that: said optical module includes an anti-reflection polarized heat-insulating glass module (8), a liquid crystal display module (7) and The Fresnel lens (14), the lens is arranged in the oblique direction of the optical module, and the mirror (5) is obliquely arranged at the output end of the Fresnel lens (14). 4. The sub-cavity projector with dual cooling systems according to claim 2, characterized in that: the air inlet end of the double-sided air inlet blower (13) is greater than the air outlet end, and the double-sided air inlet blower (13) is increased. 13) The wind pressure at the air outlet. 5. The sub-cavity projector with dual heat dissipation system according to claim 1, characterized in that: a conical light concentrating unit (9) is arranged in the second chamber (3), and the conical light concentrating unit The input end of (9) is provided with LED lamp (114), and the output end is facing the optical module of the first chamber, and one side of the second chamber (3) is provided with a first axial fan (12), away from the first The other side of the second chamber (3) of the axial flow fan (12) is an air inlet opening, and external cold air enters into the second chamber (3) from the air inlet opening, and is blown by the first axial flow fan (12) into the second chamber (3). The hot air is extracted from the outside, starting from the air inlet opening, passing through the entire second chamber (3), and then discharged by the first axial flow fan (12), thereby forming a "one"-shaped open circulation heat dissipation channel. 6. The split-cavity projector with dual heat dissipation systems according to claim 5, characterized in that: said LED lamp (114) is equipped with an LED heat dissipation module for heat dissipation through the LED heat dissipation module. 7. The sub-cavity projector with dual heat dissipation system according to claim 6, characterized in that: said LED heat dissipation module includes aluminum alloy (113), heat dissipation copper pipe (112) and heat dissipation fins (111) , the heat dissipation fins (111) are connected with the heat dissipation copper pipe (112), the other end of the heat dissipation copper pipe (112) is connected with the aluminum alloy (113), and the LED lamp (114) is installed on the aluminum alloy (113). 8. The split-cavity projector with dual heat dissipation systems according to claim 1, characterized in that: a second axial flow fan (6) is arranged outside the optical machine housing (1) on the opposite surface of the lens, The output end of the second axial flow fan (6) faces the air inlet opening of the aluminum extrusion (4) and the second chamber (3).

Images