WO2022252395A1

WO2022252395A1 - Manufacturing method for optical projection machine

Info

Publication number: WO2022252395A1
Application number: PCT/CN2021/111743
Authority: WO
Inventors: 丁明内; 夏业新; 梅良; 朱炜湛; 杨伟樑; 高志强
Original assignee: 广景视睿科技（深圳）有限公司
Priority date: 2021-06-02
Filing date: 2021-08-10
Publication date: 2022-12-08
Also published as: CN113448155A

Abstract

The present invention relates to the technical field of optical projection machine manufacturing, and provides a manufacturing method for an optical protection machine. The method is applied to an optical projection machine which has a light source module (200) and a heat dissipation module (100), wherein the heat dissipation module (100) comprises an aluminum heat sink (120) and at least one heat pipe (110). The method comprises: (10) firstly fixing a heating end of the at least one heat pipe (110) to a backlight side of the light source module (200) by means of low-temperature welding; and (20) fixing a condensation end of the at least one heat pipe (110) to the aluminum heat sink (120), so as to complete manufacturing of the projection optical machine. The optical projection machine manufactured by means of the method has a simple flow process, is low in cost and thermal resistance, and good in reliability.

Description

A method of manufacturing a projection light machine

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202110613987.4 filed on June 2, 2021, and the title of the invention is "a method for manufacturing a projection light machine", the entire content of which is incorporated in this application by reference middle.

technical field

The embodiments of the present application relate to the technical field of projection light machine manufacturing, and in particular, to a method for manufacturing a projection light machine.

Background technique

During the operation of the optical engine module in the projection equipment, the light source module will convert electric energy into light energy and heat energy during the operation process due to the limitation of physical characteristics. Influenced by the material of the light source chip, packaging material and process, the components in the light source module, such as the PN junction in the light-emitting diode light source, when the temperature rises, the luminous efficiency of the light source module usually decreases, the color temperature drifts, and the forward voltage (VF value) drift, and even the risk of burning electronic components.

In the process of realizing the embodiment of the present application, the inventors found that there are at least the following problems in the above related technologies: At present, in order to solve the problem that the light source in the projection light machine is easy to overheat, the existing solution usually chooses to reduce the heat generation of the light source, for example, reduce The number of light sources such as light-emitting diodes in the light source increases the area of the light source panel, or directly adopts cold light sources or fluorescent light sources with low thermal efficiency, etc. Most of them are improvements for light sources, but such improvements will bring light sources Problems such as unsatisfactory luminous effect and increased cost.

Contents of the invention

The embodiment of the present application provides a manufacturing method of a projection light machine with simple process and good reliability.

The purpose of the embodiment of the application is achieved through the following technical solutions:

In order to solve the above technical problems, an embodiment of the present application provides a method for manufacturing a projection light machine, which is applied to a projection light machine. The projection light machine includes a light source module and a heat dissipation module. The heat dissipation module includes an aluminum A heat sink and at least one heat pipe, the method comprising:

Fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding;

The condensation end of the at least one heat pipe is fixed on the aluminum radiator.

In some embodiments, the light projection machine further includes a projection lens,

The method also includes:

The projection lens is arranged on the light output side of the light source module.

In some embodiments, the heat dissipation module further includes a fan,

The method also includes:

Assemble the fan on the aluminum radiator.

In some embodiments, the light source module includes a light emitting diode light source and a copper substrate,

Before fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding, the method further includes:

The LED light source is welded and fixed on one side of the copper substrate.

In some embodiments, the fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding includes:

The heating end of the at least one heat pipe is fixed on the other side of the copper substrate by low-temperature solder paste welding.

In some embodiments, the fixing the condensation end of the at least one heat pipe on the aluminum radiator includes:

The condensation end of the at least one heat pipe is fixed on the aluminum radiator by low-temperature solder paste welding.

The condensation end of the at least one heat pipe is fixed on the aluminum radiator through interference fit.

In some embodiments, the aluminum heat sink is a finned heat sink,

Before said fixing the condensation end of said at least one heat pipe on said aluminum heat sink, said method also includes:

The aluminum thin sheets are manufactured through a stamping process, and the aluminum thin sheets are stacked and combined to obtain the fin radiator.

In some embodiments, the aluminum radiator is a cold forged radiator,

The cold forging heat sink is obtained by extruding an aluminum block forming process through a forging die.

In some embodiments, the aluminum radiator is an aluminum profile radiator,

The aluminum profile heat sink is processed through an aluminum extruded profile drawing forming process.

Compared with the prior art, the beneficial effect of the present application is: different from the situation of the prior art, the embodiment of the present application provides a method for manufacturing a projection light machine, which is applied to a light source module and a heat dissipation module The projection light machine of the invention, wherein the heat dissipation module includes an aluminum heat sink and at least one heat pipe, the method firstly fixes the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding, and then Fix the condensing end of the at least one heat pipe on the aluminum heat sink to complete the production of the projection light machine. The projection light machine manufactured by this method has simple process technology, low cost, low thermal resistance and reliability it is good.

Description of drawings

One or more embodiments are exemplified by the pictures in the corresponding drawings, and these exemplifications do not constitute a limitation to the embodiments. Components/modules and steps with the same reference numerals in the drawings represent For similar elements/modules and steps, unless otherwise stated, the drawings in the drawings are not limited to scale.

Fig. 1 is a first schematic flow chart of a manufacturing method of a projection light machine provided in Embodiment 1 of the present application;

Fig. 2 is a schematic structural diagram of a projection light machine provided in Embodiment 1 of the present application;

Fig. 3 is a second schematic flow chart of a manufacturing method of a projection light machine provided in Embodiment 1 of the present application;

Fig. 4 is a schematic flow chart of a third method of manufacturing a projection light machine provided in Embodiment 1 of the present application;

FIG. 5 is a schematic diagram of a fourth flow chart of a manufacturing method of a projection light machine provided in Embodiment 1 of the present application;

Fig. 6 is a structural schematic diagram of an aluminum heat sink in the projection light machine shown in Fig. 2;

FIG. 7 is a schematic diagram of a fifth flow chart of a manufacturing method of a projection light machine provided in Embodiment 1 of the present application;

Fig. 8 is a schematic structural diagram of a projection light machine provided in Embodiment 2 of the present application;

Fig. 9 is a structural schematic diagram of an aluminum heat sink in the projection light machine shown in Fig. 8;

Fig. 10 is a schematic flowchart of a method for manufacturing a projection light machine provided in Embodiment 2 of the present application;

Fig. 11 is a schematic structural diagram of a projection light machine provided in Embodiment 3 of the present application;

Fig. 12 is a schematic structural view of the aluminum heat sink in the projection light machine shown in Fig. 11;

FIG. 13 is a schematic flowchart of a manufacturing method of a projection light machine provided in Embodiment 3 of the present application.

Detailed ways

The present application will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present application, but do not limit the present application in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application. These all belong to the protection scope of this application.

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

It should be noted that, if there is no conflict, various features in the embodiments of the present application may be combined with each other, and all of them are within the protection scope of the present application. In addition, although the functional modules are divided in the schematic diagram of the device, and the logical order is shown in the flowchart, in some cases, the division of modules in the device or the sequence shown in the flowchart can be performed in different ways. or the steps described.

It should be noted that when an element is said to be "fixed" to another element, it may be directly on the other element, or there may be one or more intervening elements therebetween. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of this application. The terminology used in the description of the present application is only for the purpose of describing a specific embodiment, and is not used to limit the present application. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features involved in the various embodiments of the present application described below may be combined with each other as long as they do not constitute a conflict with each other.

In order to solve the problem that the heat dissipation of the light source module in the current projection light machine is difficult and the temperature is too high, the embodiment of the present application provides a method for manufacturing a projection light machine. By this method, the formed projection light machine can integrate light sources, Heat transfer and heat exchange are integrated to achieve efficient heat dissipation, the manufacturing process is simple, the cost is low, and the heat dissipation efficiency of the light source module can be effectively improved, the reliability is good, and the thermal resistance of the entire optical machine is reduced.

Specifically, the embodiments of the present application will be further described below in conjunction with the accompanying drawings.

Embodiment one

An embodiment of the present application provides a method for manufacturing a projection light machine. Please refer to FIG. 1 , which shows the first flow of a method for manufacturing a projection light machine provided in an embodiment of the present application. The method includes but not Limited to the following steps:

Step 10: fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding;

Please also refer to FIG. 2, which shows the structure of a light projection machine provided by the embodiment of the present application. The light projection machine includes a light source module 200 and a heat dissipation module 100. The heat dissipation module 100 includes aluminum A radiator 120 and at least one heat pipe 110 .

Preferably, the heat pipe 110 can be made of a material with strong thermal conductivity and/or high specific heat capacity, such as metal, which can be hollow or solid. After the material is made into a long rod, it is made by bending For the heat pipe 110, further, a certain amount of frictional treatment can also be performed on both ends of the heat pipe 110 to increase the friction force at both ends, so that the two ends are respectively fixed on the light source module 200 and the aluminum heat sink 120 can be fixed more firmly. Specifically, the material, shape, and size of the heat pipe 110 can be set according to the heat production of the light source module 200 during actual use, and different sizes and efficiencies can be selected. Heat pipes and the like do not need to be limited by the embodiments of the present application.

The aluminum radiator 120 is a radiator made of aluminum, which has a good heat dissipation effect. Specifically, the heat exchange area and size of the aluminum radiator 120 can be set according to actual needs, and there is no need to Stick to the limitations of the examples of this application.

Step 20: Fix the condensation end of the at least one heat pipe on the aluminum radiator.

Specifically, the condensing end of the at least one heat pipe is fixed on the aluminum radiator by low-temperature solder paste welding, or the condensing end of the at least one heat pipe is fixed on the aluminum radiator by interference fit. on the radiator.

Among them, the method of fixing with low-temperature solder can transfer heat more effectively and quickly, while the method of fixing with interference fit can have the advantages of simple structure, good centering, and high bearing capacity, which can be selected according to the actual situation in actual use. . In some other embodiments, the two ends of the heat pipe 110 can also be respectively fixed on the light source module 200 and the aluminum heat sink 120 in other ways, for example, by buckles, screws, high-temperature glue Fixing in other ways such as sticking, specifically, can be set according to actual needs, and does not need to be limited by the limitations of the embodiments of the present application.

Further, the projection light machine also includes a projection lens (not shown in the figure), please refer to FIG. 3 , which shows the second process of a manufacturing method of a projection light machine provided by an embodiment of the present application. The method Also includes:

Step 30: Install the projection lens on the light output side of the light source module.

By setting the projection lens, the light source module 200 can be irradiated to generate projection images that can be adjusted and projected. Preferably, the projection lens should at least include a projection chip and a lens group, and the projection chip is used to receive The light source light emitted by the light source module 200 generates projected image light, and the lens group is used to adjust the focal length, distortion, projection direction and size of the projected image, etc. Specifically, the specific structure of the set projection lens can be The configuration is performed according to actual needs, and there is no need to be constrained by the description and limitations of the embodiments of the present application.

Further, please continue to refer to FIG. 2 , the heat dissipation module 100 also includes a fan 130 , please refer to FIG. 4 , which shows the third process flow of a manufacturing method of a projection light machine provided by an embodiment of the present application, so The method also includes:

Step 40: Assembling the fan on the aluminum heat sink.

In the embodiment of the present application, referring to FIG. 2 , a fan 130 may also be provided on the aluminum heat sink 120 to increase the convective heat transfer coefficient during the convective heat transfer process and improve convective heat dissipation. Of course, the fan 130 may not be provided. When the fan 130 is not provided, the heat reaching the aluminum heat sink 120 is dissipated by natural convection. In actual use, the setting position of the fan 130 and The quantity and the like can be set according to actual needs, and do not need to be limited by the limitations of the embodiments of the present application.

Further, please continue to refer to FIG. 2, the light source module 200 includes a light emitting diode light source 210 and a copper substrate 220, please refer to FIG. Four kinds of processes, before the step 10, the method also includes:

Step 50: Solder and fix the LED light source on one side of the copper substrate.

Please continue to refer to FIG. 2, the light source module 200 includes a light emitting diode (light emitting diode, LED) light source 210 and a copper substrate 220, therefore, the heating end of the at least one heat pipe is fixed on the light source by low-temperature welding Before the backlight side of the module, the LED light source 210 needs to be fixedly arranged on one side of the copper substrate 220 .

Based on this, the step 10 further includes:

Step 11: Fix the heating end of the at least one heat pipe on the other side of the copper substrate by low-temperature solder paste welding.

After fixing the LED light source 210 on one side of the copper substrate 220, fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding includes: The heating end 111 of the at least one heat pipe 110 is fixed on the other side of the copper substrate 220 by low-temperature solder paste welding.

In practical application scenarios, the light source module 200 may not be the structure of the light source module 200 shown in the above structure and FIG. Specifically, other types of substrates may be set according to actual needs, and need not be constrained by the limitations of the embodiments of the present application.

In the embodiment of the present application, specifically, please refer to FIG. 6 together, which shows the structure of the aluminum radiator in the projection light machine shown in FIG. 2. As shown in FIG. 6, the aluminum radiator is a fin Fin heat sink, before the step 20, please refer to FIG. 7, which shows the fifth process of a method for manufacturing a projection light machine provided by the embodiment of the present application. The method also includes:

Step 60a: Making aluminum sheets through a stamping process, and stacking and combining the aluminum sheets to obtain the fin radiator.

Before the condensing end of the at least one heat pipe is fixed on the aluminum heat sink, the fin heat sink 120 is obtained by using continuous stamping and forming of aluminum sheets and stacking multiple aluminum sheets. Specifically, in the fin radiator 120, the number and area of the fins, the heat exchange area and size, etc. can be set according to actual needs, and need not be constrained by the limitations of the embodiments of the present application.

Embodiment two

The embodiment of the present application provides a method for manufacturing a projection light machine, which has the same features as the first step 10 to step 50 of the above-mentioned embodiment, and the corresponding accompanying drawings 1 and 3 to 5, and is similar to the above-mentioned implementation Example 1 is different in that a different aluminum heat sink is provided in the projection light machine of the embodiment of the present application, and a manufacturing method of the aluminum heat sink is provided accordingly, specifically, please refer to Fig. 8 and Fig. 9 , which respectively show the structure of a projection light machine provided in the embodiment of the present application and the aluminum heat sink in the projection light machine. As shown in FIG. 9, the aluminum heat sink is a cold forged heat sink. Before the above step 20, please refer to FIG. 10, which shows the flow of a method for manufacturing a projection light machine provided by the embodiment of the present application, and the method further includes:

Step 60b: Extruding the aluminum block with a forging die to process and obtain the cold forged radiator.

Before the condensation end of the at least one heat pipe is fixed on the aluminum heat sink, the aluminum block is formed by extruding a forging die, and then sequentially processed through corresponding secondary processing steps to obtain the cold forging heat dissipation device 120. Specifically, in the cold-forged heat sink 120, the heat exchange area and size can be set according to actual needs, and need not be constrained by the limitations of the embodiments of the present application.

Embodiment Three

The embodiment of the present application provides a method for manufacturing a projection light machine, which has the same features as the first step 10 to step 50 of the above-mentioned embodiment, and the corresponding accompanying drawings 1 and 3 to 5, and is similar to the above-mentioned implementation The difference of Example 1 is that a different aluminum heat sink is provided in the projection light machine of the embodiment of the present application, and the manufacturing method of the aluminum heat sink is provided accordingly, specifically, please refer to Fig. 11 and Fig. 12 , which respectively show the structure of a projection light machine provided in the embodiment of the present application and the aluminum heat sink in the projection light machine. As shown in FIG. 12, the aluminum heat sink is an aluminum profile heat sink. Before the above step 20, please refer to FIG. 13 , which shows the flow of a method for manufacturing a projection light machine provided by an embodiment of the present application, and the method further includes:

Step 60c: Process and obtain the aluminum profile heat sink through the extrusion forming process of aluminum profile.

Before the condensation end of the at least one heat pipe is fixed on the aluminum heat sink, the aluminum extruded profile is stretched and formed, and then undergoes secondary processing procedures such as cutting, grooving, milling, anodizing, etc. processing to obtain the aluminum profile radiator 120. Specifically, in the aluminum profile heat sink 120, the heat exchange area and size can be set according to actual needs, and do not need to be constrained by the limitations of the embodiments of the present application.

An embodiment of the present application provides a method for manufacturing a projection light machine, the method is applied to a projection light machine with a light source module and a heat dissipation module, wherein the heat dissipation module includes an aluminum heat sink and at least one heat pipe, In this method, firstly, the heating end of the at least one heat pipe is fixed on the backlight side of the light source module by low-temperature welding, and then the condensing end of the at least one heat pipe is fixed on the aluminum radiator to complete For the production of the projection light machine, the projection light machine produced by the method has simple process technology, low cost, low thermal resistance and good reliability.

It should be noted that the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physically separated. A unit can be located in one place, or it can be distributed to multiple network units. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, and of course also by hardware. Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above-mentioned embodiments can be completed by instructing related hardware through computer programs, and the programs can be stored in computer-readable storage media, and the programs are executed , may include the flow of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; under the thinking of the present application, the above embodiments or technical features in different embodiments can also be combined, The steps can be performed in any order, and there are many other variations of the different aspects of the application as described above, which have not been presented in detail for the sake of brevity; although the application has been described in detail with reference to the preceding examples, those of ordinary skill in the art The skilled person should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the implementation of the present application. The scope of technical solutions.

Claims

A manufacturing method of a projection light machine, characterized in that it is applied to a projection light machine, the projection light machine includes a light source module and a heat dissipation module, the heat dissipation module includes an aluminum radiator and at least one heat pipe, the The methods described include:

Fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding;

The condensation end of the at least one heat pipe is fixed on the aluminum radiator.
The manufacturing method according to claim 1, characterized in that,

The projection light machine also includes a projection lens,

The method also includes:

The projection lens is arranged on the light output side of the light source module.
The manufacturing method according to claim 1, characterized in that,

The cooling module also includes a fan,

The method also includes:

Assemble the fan on the aluminum radiator.
The manufacturing method according to claim 1, characterized in that,

The light source module includes a light emitting diode light source and a copper substrate,

Before fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding, the method further includes:

The LED light source is welded and fixed on one side of the copper substrate.
The manufacturing method according to claim 4, characterized in that,

The fixing the heating end of the at least one heat pipe on the backlight side of the light source module by low-temperature welding includes:

The heating end of the at least one heat pipe is fixed on the other side of the copper substrate by low-temperature solder paste welding.
The manufacturing method according to claim 1, characterized in that,

Said fixing the condensation end of said at least one heat pipe on said aluminum radiator comprises:

The condensation end of the at least one heat pipe is fixed on the aluminum radiator by low-temperature solder paste welding.
The manufacturing method according to claim 1, characterized in that,

Said fixing the condensation end of said at least one heat pipe on said aluminum radiator comprises:

The condensation end of the at least one heat pipe is fixed on the aluminum radiator through interference fit.
According to the manufacturing method described in any one of claims 1-7, it is characterized in that,

The aluminum heat sink is a finned heat sink,

Before said fixing the condensation end of said at least one heat pipe on said aluminum heat sink, said method also includes:

The aluminum thin sheets are manufactured through a stamping process, and the aluminum thin sheets are stacked and combined to obtain the fin radiator.
According to the manufacturing method described in any one of claims 1-7, it is characterized in that,

The aluminum radiator is a cold forged radiator,

Before said fixing the condensation end of said at least one heat pipe on said aluminum heat sink, said method also includes:

The cold forging heat sink is obtained by extruding an aluminum block forming process through a forging die.
According to the manufacturing method described in any one of claims 1-7, it is characterized in that,

The aluminum radiator is an aluminum profile radiator,

Before said fixing the condensation end of said at least one heat pipe on said aluminum heat sink, said method also includes:

The aluminum profile heat sink is processed through an aluminum extruded profile drawing forming process.