CN113946089A - Heat-radiation laser projector case - Google Patents
Heat-radiation laser projector case Download PDFInfo
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- CN113946089A CN113946089A CN202111249632.8A CN202111249632A CN113946089A CN 113946089 A CN113946089 A CN 113946089A CN 202111249632 A CN202111249632 A CN 202111249632A CN 113946089 A CN113946089 A CN 113946089A
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- cavity
- inner cavity
- fan
- heat
- air outlet
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
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Abstract
The invention relates to the technical field of projection equipment, in particular to a radiating laser projector case which comprises a case body, a light source, a Laval nozzle, an air inlet fan and an air outlet fan, wherein the case body comprises an outer cavity and an inner cavity which are communicated with each other; the light source is arranged in the inner cavity, and the Laval nozzle is arranged at the joint of the outer cavity and the inner cavity; the air outlet end of the air inlet fan is communicated with the outer cavity; the air inlet end of the air outlet fan is communicated with the inner cavity, and the air outlet end of the air outlet fan is communicated with the outside of the box body. According to the invention, the air is deposited in the outer cavity through the air inlet fan to form a high-pressure area, and a certain pressure difference is formed between the outer cavity and the inner cavity, so that after the air passes through the Laval nozzle, the air is changed into supersonic gas which is sprayed onto the surface of the light source through high-speed jet flow and flows out of the cavity from the inner cavity rapidly, and the heat is effectively taken away.
Description
Technical Field
The invention relates to the technical field of projection equipment, in particular to a radiating laser projector case.
Background
With the increase of the power of laser devices, the requirements of industrial applications are met, and the lasers are also gradually used as light sources for illumination. For example, in recent years, a laser is used as a projection light source in a projection apparatus, instead of a mercury lamp, and the laser also has advantages of a small etendue and high luminance as compared with an LED light source. In a laser light source, a semiconductor laser converts electric energy into light energy, the light power efficiency can be about 40%, and 60% of electric energy is converted into heat energy. The projector case has a complex internal structure and poor heat dissipation performance, and the light emitting efficiency of the laser gradually decreases along with the increase of the temperature of the laser, so that the temperature control of the laser is of great importance to the normal work of the laser.
Disclosure of Invention
In order to solve the above problems, the present invention provides a cabinet for a thermal laser projector, in which heat generated by a light source is dissipated through a heat dissipation structure, and the heat dissipation is sufficiently rapid.
In order to achieve the above object, the present invention provides a heat-radiating laser projector case, which includes a case body, a light source, a laval nozzle, an inlet fan and an outlet fan, wherein the case body includes an outer cavity and an inner cavity which are communicated with each other; the light source is arranged in the inner cavity, and the Laval nozzle is arranged at the joint of the outer cavity and the inner cavity; the air outlet end of the air inlet fan is communicated with the outer cavity; the air inlet end of the air outlet fan is communicated with the inner cavity, and the air outlet end of the air outlet fan is communicated with the outside of the box body.
As a preferable scheme, the case further includes a flow guide assembly disposed in the case, the flow guide assembly divides an inner portion of the case into the outer cavity and the inner cavity, and the flow guide assembly has at least one cavity interface communicating the inner cavity and the outer cavity.
As a preferable scheme, the laval nozzle is arranged at the cavity interface, the laval nozzle is made of one of invar steel or ALN ceramic, and the inlet area of the laval nozzle is more than 10 times larger than the outlet area of the laval nozzle.
As a preferable scheme, the flow guide assembly comprises two flow guide plates, and the flow guide plates are connected to the same inner side wall of the chassis; the end of the baffle forms the cavity interface.
As a preferred scheme, the chassis further includes an inner cavity light-emitting system, and the inner cavity light-emitting system is disposed between the two air deflectors and forms a cavity interface with the end portions of the air deflectors.
As a preferred scheme, the case further comprises an outer cavity light emitting system embedded in the case body, and the outer cavity light emitting system, the inner cavity light emitting system, the light source and the air outlet fan are sequentially linearly arranged.
As a preferred scheme, the flow guide assembly further comprises a flow guide wing and an auxiliary wing; one end of the auxiliary wing is connected with the end part of the guide plate through the guide wing, and the other end of the auxiliary wing is provided with a gap with the inner wall of the box body, and the gap is communicated with the inner cavity and the outer cavity.
As a preferred scheme, the case further comprises a dustproof filtering device, and the dustproof filtering device is arranged on the air inlet fan and the air outlet fan.
As a preferred scheme, the case further comprises an air inlet pipeline embedded in the case body, and the air inlet end of the fan is communicated with the outside of the case body through the air inlet pipeline.
As a preferable scheme, the flow rate of the air outlet fan is more than twice of the flow rate of the air inlet fan.
The invention has the beneficial effects that:
the invention divides the box body into an outer cavity and an inner cavity which are communicated with each other, the outer cavity is provided with the air inlet fan, and the inner cavity is provided with the air outlet fan and the light source, so that the air flow can flow from the outer cavity to the inner cavity. Because the inner cavity outlet fan discharges air at high speed to form vacuum in the inner cavity, and under the action of the air inlet fan, pressure difference between the inner cavity and the outer cavity of the box body is formed, so that the air is accelerated when passing through the Laval nozzle, and jet air is sprayed onto the surface of the light source at high speed at a certain angle and flows out at high speed through the air outlet fan, and heat is effectively taken away.
Drawings
Fig. 1 is a schematic structural view of a heat-radiating laser projector case of the present invention.
Fig. 2 is a schematic diagram of the operation of the heat-radiating laser projector housing of the present invention.
The reference numbers illustrate: 10-a box body; 11-an outer cavity; 12-lumen; 20-a light source; 30-an air intake fan; 40-an air outlet fan; 50-a flow guide assembly; 51-a baffle; 52-guide vanes; 53-auxiliary wings; 60-laval nozzle; 70-lumen light extraction system; 80-external cavity light-emitting system; 90-air inlet pipeline.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present invention relates to a heat-radiating laser projector case, which includes a case body 10, a light source 30, a laval nozzle 60, an air inlet fan 30 and an air outlet fan 40, wherein the case body 10 includes an outer cavity 11 and an inner cavity 12 which are communicated with each other; the light source 30 is arranged in the inner cavity 12, and the Laval nozzle 60 is arranged at the joint of the outer cavity 11 and the inner cavity 12; the air outlet end of the air inlet fan 30 is communicated with the outer cavity 11; the air inlet end of the air outlet fan 40 is communicated with the inner cavity 12, and the air outlet end thereof is communicated with the outside of the box body 10.
The invention divides the box body 10 into an outer cavity 11 and an inner cavity 12 which are communicated with each other, the outer cavity 11 is provided with an air inlet fan 30, and the inner cavity 12 is provided with an air outlet fan 40 and a light source 30, so that air flow can flow from the outer cavity 11 to the inner cavity 12. Because the outlet fan of the inner cavity 12 discharges air at high speed to form vacuum in the inner cavity 12, and under the action of the air inlet fan 30, a pressure difference between the inner cavity 12 and the outer cavity 11 of the box body 10 is formed, so that the air is accelerated when passing through the Laval nozzle 60, and jet air is sprayed onto the surface of the light source 30 at a high speed at a certain angle and flows out at a high speed through the air outlet fan 40, thereby effectively taking away heat.
Further, the material of the laval nozzle 60 is one of invar or ALN ceramic, but is not limited thereto; in order to obtain a higher flow rate of the gas in the laval nozzle 60, the area of the inlet (the interface connecting the outer cavity 11) of the laval nozzle 60 is more than 10 times larger than the area of the outlet (the interface connecting the inner cavity 12).
The case also comprises a flow guide assembly 50 arranged in the case body 10, and the flow guide assembly 50 divides the interior of the case body 10 into an outer cavity 11 and an inner cavity 12; the flow directing assembly 50 has at least one chamber port that communicates between the inner chamber 12 and the outer chamber 11. Further, the guide assembly 50 includes two guide plates 51, two guide wings 52 and two auxiliary wings 53; the two guide plates 51 are connected to the same inner side wall of the case, a cavity interface is formed between the end parts of the two guide plates 51, and the Laval nozzle 60 is arranged at the cavity interface; one end of the auxiliary wing 53 is connected to the end of the baffle plate 51 through the guide wing 52, and the other end of the auxiliary wing is spaced from the inner wall of the case 10, and the gap communicates the inner chamber 12 and the outer chamber 11. The guide wings 52 and the auxiliary wings 53 will effectively ensure the gas to be uniformly distributed along the cavity interface, and prevent the gas from short-circuiting and flowing out of the box body 10.
The box body 10 is a square box body and comprises four side surfaces, wherein the four side surfaces are a first side surface, a second side surface, a third side surface and a fourth side surface which are sequentially connected in an enclosing manner, the three front side surfaces (the first side surface, the second side surface and the third side surface) and the outer side wall of the flow guide assembly 50 form an outer cavity 11, and the fourth side surface and the inner side wall of the flow guide assembly 50 form an inner cavity 12; the air outlet fan 40 is disposed on the fourth side, and the air inlet fan 30 is disposed on the first side, the second side, or the third side. In this embodiment, the number of the intake fans 30 is two, and the intake fans are respectively disposed on the first side surface and the third side surface.
The case also comprises an inner cavity light-emitting system 70 and an outer cavity light-emitting system 80 embedded in the case body 10, wherein the two light-emitting systems can be single lenses or lens optical systems; the lumen light extraction system 70 is arranged between the two baffles 51 and forms two cavity interfaces with the ends of the two baffles 51. Therefore, in the present embodiment, the number of the laval nozzles 60 is two, and the laval nozzles are all thin tubes with a diameter of less than 2mm, and the lumen light-emitting system 70 is disposed between the two laval nozzles 60; the outer cavity light emitting system 80 is disposed on the second side surface, and is linearly disposed with the inner cavity light emitting system 70, the light source 30 and the air outlet fan 40 in sequence.
Furthermore, the case also comprises a dustproof filtering device and an air inlet pipeline 90 embedded in the case body 10, the dustproof filtering device is arranged on the air inlet fan 30 and the air outlet fan 40 to prevent large-particle dust or small winged insects in the air from entering the cavity shell, and the dustproof filtering device can be but is not limited to a filter screen made of cotton yarn, cotton velvet and other materials; the air inlet end of the air inlet fan 30 is communicated with the outside of the box body 10 through the air inlet pipeline 90; the flow rate of the outlet fan 40 is more than twice of that of the inlet fan 30.
As shown by the direction of the gas flow in fig. 2, during the operation of the apparatus, the light source 30 generates heat to be deposited in the inner cavity 12, and the inner cavity 12 is exhausted at high speed by the air outlet fan 40 to form a vacuum in the inner cavity 12; under the action of the air inlet fan 30 and the air inlet pipeline 90, the air is deposited in the outer cavity 11 to form a high-pressure area; so that a certain pressure difference exists between the inner cavity 12 and the outer cavity 11, and further, after the gas passes through the laval nozzle 60, the gas is changed into supersonic gas, and the supersonic gas is sprayed onto the surface of the light source 30 by high-speed jet flow and rapidly flows out of the box body 10 from the inner cavity 12, so that heat is effectively taken away.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.
Claims (10)
1. A heat-dissipating laser projector case, comprising: the energy-saving type solar water heater comprises a box body, a light source, a Laval nozzle, an air inlet fan and an air outlet fan, wherein the box body comprises an outer cavity and an inner cavity which are communicated with each other; the light source is arranged in the inner cavity, and the Laval nozzle is arranged at the joint of the outer cavity and the inner cavity; the air outlet end of the air inlet fan is communicated with the outer cavity; the air inlet end of the air outlet fan is communicated with the inner cavity, and the air outlet end of the air outlet fan is communicated with the outside of the box body.
2. The heat-radiating laser projector chassis of claim 1, wherein: the case also comprises a flow guide assembly arranged in the case body, and the flow guide assembly divides the inner part of the case body into the outer cavity and the inner cavity; the flow guide assembly is provided with at least one cavity interface which is communicated with the inner cavity and the outer cavity.
3. The heat-radiating laser projector chassis of claim 2, wherein: the laval nozzle is arranged at the cavity interface, the laval nozzle is made of one of invar steel or ALN ceramic, and the inlet area of the laval nozzle is more than 10 times larger than the outlet area of the laval nozzle.
4. The heat-radiating laser projector chassis of claim 3, wherein: the flow guide assembly comprises two flow guide plates, and the flow guide plates are connected to the same inner side wall of the case; the end of the baffle forms the cavity interface.
5. The heat-radiating laser projector chassis of claim 4, wherein: the chassis further comprises an inner cavity light emitting system, wherein the inner cavity light emitting system is arranged between the two guide plates and forms a cavity interface with the end parts of the guide plates.
6. The heat-radiating laser projector chassis of claim 5, wherein: the case also comprises an outer cavity light emitting system embedded in the case body, and the outer cavity light emitting system, the inner cavity light emitting system, the light source and the air outlet fan are sequentially linearly arranged.
7. The heat-radiating laser projector chassis of claim 6, wherein: the flow guide assembly further comprises flow guide wings and auxiliary wings; one end of the auxiliary wing is connected with the end part of the guide plate through the guide wing, and the other end of the auxiliary wing is provided with a gap with the inner wall of the box body, and the gap is communicated with the inner cavity and the outer cavity.
8. The heat-radiating laser projector chassis of claim 1, wherein: the case also comprises a dustproof filtering device, and the dustproof filtering device is arranged on the air inlet fan and the air outlet fan.
9. The heat-radiating laser projector chassis of claim 1, wherein: the case also comprises an air inlet pipeline embedded in the case body, and the air inlet end of the fan is communicated with the outside of the case body through the air inlet pipeline.
10. The heat-radiating laser projector chassis of claim 1, wherein: the flow rate of the air outlet fan is more than twice of that of the air inlet fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249632.8A CN113946089B (en) | 2021-10-26 | 2021-10-26 | Heat-radiation laser projector case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111249632.8A CN113946089B (en) | 2021-10-26 | 2021-10-26 | Heat-radiation laser projector case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113946089A true CN113946089A (en) | 2022-01-18 |
| CN113946089B CN113946089B (en) | 2023-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111249632.8A Active CN113946089B (en) | 2021-10-26 | 2021-10-26 | Heat-radiation laser projector case |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131534A (en) * | 2007-08-17 | 2008-02-27 | 广东威创日新电子有限公司 | Heat radiating device with independent ventiduct |
| US20100103383A1 (en) * | 2008-10-29 | 2010-04-29 | Asia Optical Co., Inc. | Heat-dissipating member for light source of projector |
| CN210490196U (en) * | 2019-08-28 | 2020-05-08 | 福建亿兆自动化设备有限公司 | Switch board with heat dissipation function |
| CN213028991U (en) * | 2020-07-31 | 2021-04-20 | 成都市天行通科技有限公司 | Heat radiation fan for LED screen |
| CN216526708U (en) * | 2021-10-26 | 2022-05-13 | 北京大学东莞光电研究院 | Heat-radiation laser projector case |
-
2021
- 2021-10-26 CN CN202111249632.8A patent/CN113946089B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101131534A (en) * | 2007-08-17 | 2008-02-27 | 广东威创日新电子有限公司 | Heat radiating device with independent ventiduct |
| US20100103383A1 (en) * | 2008-10-29 | 2010-04-29 | Asia Optical Co., Inc. | Heat-dissipating member for light source of projector |
| CN210490196U (en) * | 2019-08-28 | 2020-05-08 | 福建亿兆自动化设备有限公司 | Switch board with heat dissipation function |
| CN213028991U (en) * | 2020-07-31 | 2021-04-20 | 成都市天行通科技有限公司 | Heat radiation fan for LED screen |
| CN216526708U (en) * | 2021-10-26 | 2022-05-13 | 北京大学东莞光电研究院 | Heat-radiation laser projector case |
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| Publication number | Publication date |
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| CN113946089B (en) | 2023-03-10 |
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