CN211086894U - Fluorescence excitation device convenient for heat dissipation and laser projection device - Google Patents
Fluorescence excitation device convenient for heat dissipation and laser projection device Download PDFInfo
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- CN211086894U CN211086894U CN201922498740.3U CN201922498740U CN211086894U CN 211086894 U CN211086894 U CN 211086894U CN 201922498740 U CN201922498740 U CN 201922498740U CN 211086894 U CN211086894 U CN 211086894U
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Abstract
The utility model provides a convenient radiating fluorescence excitation device and laser projection device. The fluorescence excitation device convenient for heat dissipation comprises: the surface of the exciting body is coated with fluorescent powder, and a cooling medium channel is arranged in the exciting body; and a cooling system providing a cooling medium for cooling the exciter through the cooling medium passage of the exciter. According to the utility model discloses a convenient radiating fluorescence excitation device and laser projection device have realized arousing body and coolant direct contact heat dissipation, make fluorescence excitation device control at a relatively lower temperature, are favorable to improving and arouse efficiency and increase the life-span, and then have increased laser projection device's life-span.
Description
Technical Field
The utility model relates to an electronic equipment field particularly relates to a convenient radiating fluorescence excitation device and laser projection device.
Background
The laser projection device is a device which uses laser to irradiate a device with fluorescent materials to excite and generate continuous excitation light with three wavelengths of red, green and blue as a light source of the color laser projection device, and the generated excitation light is controlled by an electric signal to perform imaging. Because of its high color gamut coverage (which can theoretically be as high as more than 90% of the color gamut range of the human eye), it is the mainstream of time-down projection display devices.
The laser projection device often adopts the fluorescence excitation device to produce the exciting light, and the temperature on the fluorescence excitation device has a great influence on the excitation efficiency of the laser and the control of the temperature, and the higher the exciting surface temperature is, the higher the calorific value of the laser conversion device is, and the temperature is also increased, so that a vicious circle is formed, and the service life and the reliability of the laser machine are influenced. A typical fluorescence excitation device comprises a color wheel disc and a color wheel motor for driving the color wheel disc to rotate, and as the excitation fluorescent powder is uniformly coated at the outermost ring position of the color wheel disc, the color wheel motor drives the color wheel disc or a roller to rotate, the fluorescent powder in a machine room on the color wheel disc is excited to generate fluorescence. The size of the color wheel disc is limited, so that the heat dissipation area is limited, the heat dissipation of the color wheel disc is not facilitated, the ambient temperature is increased, the color wheel motor works unstably in a high-temperature environment, the excitation efficiency of the laser projection device is reduced, and the reliability and the service life of the laser projection device are reduced.
The utility model provides a convenient radiating fluorescence excitation device and laser projection device for solve the problem among the prior art.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
In order to solve the problems in the prior art, the utility model provides a convenient radiating fluorescence excitation device, include:
the surface of the exciting body is coated with fluorescent powder, and a cooling medium channel is arranged in the exciting body; and
a cooling system providing a cooling medium through the cooling medium passage of the energizer for cooling the energizer.
Exemplarily, the device further comprises a driving device for driving the excitation body to move.
Illustratively, the fluorescence excitation device comprises a pipe arranged at two ends of the excitation body, and the pipe is made of soft materials.
Illustratively, the excitation body is provided as a tubular structure.
Illustratively, the driving device drives the exciting body to do reciprocating linear motion or reciprocating rotary motion.
Illustratively, the cooling system includes a cooling liquid supply system configured to supply a cooling liquid as the cooling medium through the cooling medium passage of the excitation body.
Exemplary, the cooling system further comprises:
the cooling liquid pipeline is connected with the pipelines at the two ends of the exciting body;
a pumping device to pump the cooling liquid to circulate the cooling liquid through the cooling liquid line and the cooling medium passage of the exciting body; and
and the heat dissipation device is used for cooling the cooling liquid.
Illustratively, the heat sink comprises a water-draining heat sink.
Illustratively, the heat sink further comprises a fan disposed opposite the water exhaust heat sink.
The utility model also provides a laser projection device contains as above arbitrary fluorescence excitation device.
According to the utility model discloses a convenient radiating fluorescence excitation device and laser projection device, the coolant that adopts cooling system to provide directly carries out the heat exchange with arousing the body, the realization is to the cooling of arousing the body, the cooling efficiency who arouses the body has been promoted greatly, prevent effectively that fluorescence excitation device from burning out because of the high temperature at the in-process that the excited produces the exciting light, and simultaneously, arouse the body and directly take the outside to give off the air through cooling system in the heat that the excited in-process that produces the exciting light, it dispels the heat with coolant direct contact to have realized arousing the body, make fluorescence excitation device control at a relatively lower temperature, be favorable to improving arouse efficiency and increase life-span, and then increased laser projection device's life-span.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
FIG. 1 is a schematic structural diagram of a laser projection apparatus;
fig. 2 is a schematic structural view of a fluorescence excitation device with convenient heat dissipation according to an embodiment of the present invention; wherein the content of the first and second substances,
the reference numerals are respectively:
Coolant line 2031 pumping apparatus 2032
A light source region 204.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, a detailed description will be provided in the following description to illustrate the fluorescence excitation device and the laser projection device of the present invention, which facilitate heat dissipation. It is apparent that the implementation of the invention is not limited to the specific details familiar to a person skilled in the art of electronic devices. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art. In the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same elements are denoted by the same reference numerals, and thus the description thereof will be omitted.
The existing laser projection device often adopts a color wheel disc and a color wheel motor for driving the color wheel disc to rotate, so that the color wheel disc is stimulated to generate exciting light in the rotating process, and when the color wheel disc is stimulated to generate exciting light, higher temperature is often generated along with the stimulating light. Referring to fig. 1, a laser projection apparatus includes a color wheel disk 101 and a color wheel motor 102 sealed within a housing 100. The color wheel disk 101 is driven to rotate by a color wheel motor 102, and generates excitation light when excited by the excitation light. The laser projection apparatus further includes a heat sink, wherein the heat sink includes a first heat sink 1031 disposed in the housing 100 and a second heat sink 1032 disposed outside the housing 100, and the first heat sink 1031 and the second heat sink 1032 are connected to dissipate heat in the housing 100 by heat transfer. Meanwhile, the heat dissipation device further includes a first fan 1033 disposed inside the casing 100 and a second fan 1034 disposed outside the casing 100, the first fan 1033 is used for enhancing circulation and convection of air inside the casing and enhancing heat dissipation, and the second fan 1034 is used for providing air volume to cool the second heat sink 1032. Because the heat dissipation device adopts the heat exchange between the radiator and the inside and outside air for heat dissipation, the heat transfer efficiency of the radiator and the heat exchange coefficient of the air are small, so that the heat dissipation is difficult. Along with the continuous operation of the laser projection device, the color wheel disc is continuously excited by the exciting light to generate heat, so that the ambient temperature rises, and the color wheel motor is unstable in working in a high-temperature environment, so that the excitation efficiency, the reliability and the service life of the laser projection device are reduced.
Example one
In order to solve the problems in the prior art, the utility model provides a convenient radiating fluorescence excitation device, include:
the surface of the exciting body is coated with fluorescent powder, and a cooling medium channel is arranged in the exciting body; and
a cooling system providing a cooling medium through the cooling medium passage of the energizer for cooling the energizer.
The fluorescence excitation device with convenient heat dissipation of the present invention is schematically illustrated below with reference to fig. 2, wherein fig. 2 is a schematic structural diagram of a fluorescence excitation device with convenient heat dissipation according to an embodiment of the present invention.
Referring to fig. 2, the fluorescence excitation means comprises an excitation body 201. The exciter 201 is a device that generates excitation light by being excited by light, and illustratively, the exciter generates red light and blue light by being excited by blue laser light. As shown in fig. 2, a condensing lens 202 is disposed at the front end of the exciting body 201, and the condensing lens 202 focuses light emitted from the light source and projects the light toward the exciting body 201 to excite the exciting body to generate exciting light. The red light and the green light generated by the excitation are reflected from the surface of the excitation body to constitute three primary colors of light for laser projection together with the blue light.
According to the utility model discloses, excite the body and set up to have phosphor powder and inside to have the coolant passageway for the surface coating, as shown in fig. 2, excite body 201 and include the tubular structure that the surface coating has phosphor powder.
The exciting body is arranged to be coated with fluorescent powder on the surface, the cooling medium channel is arranged in the exciting body, and when the cooling medium flows through the cooling medium channel of the exciting body, the cooling medium exchanges heat with the exciting body, so that the exciting body is cooled.
Exemplary cooling mediums include, but are not limited to, cooling fluids, cooling gases, and the like.
According to the present invention, the fluorescence excitation device further comprises a cooling system for cooling the excitation body 201. Wherein the cooling system provides a cooling medium that flows through the cooling medium passage of the excitation body to cool the excitation body. As shown in fig. 2, a cooling system is in communication with the tubular structure of the energizer 201, and provides a cooling medium through the tubular structure of the energizer to heat exchange the cooling medium with the tubular structure, and the energizer 201 is cooled by the cooling system.
It should be understood that the present embodiment provides the exciting body with the cooling medium channel inside, as a tubular structure, which is only exemplary, and those skilled in the art should understand that any cooling medium channel capable of realizing the cooling medium passing through the exciting body is suitable for the present invention.
Adopt the coolant that cooling system provided and arouse the body and directly carry out the heat exchange, the realization is to the cooling of arousing the body, the cooling efficiency who arouses the body has been promoted greatly, effectively prevent to arouse the body and burn out because of the high temperature at the in-process that the excited produces the exciting light, and simultaneously, arouse the body and directly take the outside to give off the air through water cooling system in the heat that the excited in-process produced the exciting light, it dispels the heat to have realized arousing body and coolant direct contact, make fluorescence excitation device control at a relatively lower temperature, be favorable to improving and arouse efficiency and increase the life-span, and then increased laser projection device's life-span.
Illustratively, the excitation body 201 further comprises a driving device (not shown) for driving the excitation body to move so as to excite the excitation light from different positions of the tubular structure of the excitation body while the excitation body continuously receives the irradiation of the light. In order to avoid burning due to rapid temperature rise of the phosphor powder when the exciter 201 is continuously irradiated with light from the condenser lens 202 to generate exciting light, when the exciter 201 is continuously irradiated with light at one point of the exciter 201, as shown in fig. 2, the tubular structure of the exciter 201 is moved by the driving device when the exciter 201 is irradiated with light focused by the condenser lens 202, so that the exciter can be continuously irradiated with light from the condenser lens 202 at different parts of the tubular structure, thereby preventing burning due to concentrated irradiation at the same point.
According to an example of the present invention, the driving device drives the tubular structure to reciprocate along the axis direction. Illustratively, the tubular structure includes a first conduit configured as a hard, high temperature resistant, thermally conductive material, such as a metallic material (e.g., copper). The outer surface of the first pipeline is coated with fluorescent powder, and when the light source irradiates the first pipeline, the fluorescent powder is excited to generate exciting light. Tubular structure sets up to the high-temperature-resistant easily heat-conducting material of hard makes the phosphor powder excited light produce when arousing, and surface temperature can conduct the liquid of circulation in the tubular structure rapidly to make the temperature of arousing the body descend rapidly, further promoted fluorescence excitation device's cooling efficiency, make fluorescence excitation device control at a relatively lower temperature, be favorable to improving and arouse efficiency and increase the life-span, and then increased laser projection device's life-span. Meanwhile, the hard material is arranged, so that the stability of exciting light generated by the fluorescence excitation device can be prevented from being influenced by the circulation of liquid in the tubular structure.
The tubular structure further comprises second pipelines respectively arranged at two ends of the first pipeline, and the second pipelines are made of soft materials, so that the first pipeline can move freely along the axis direction.
Exemplarily, the second pipeline sets up to length long enough, simultaneously, because it is soft material for first pipeline realizes through the bending deformation of second pipeline that first pipeline is realizing along the excitation body homoenergetic realization of the liquid channel that the axis direction can freely remove when moving along the axis direction the utility model discloses a technical effect.
In one example according to the present invention, the driving device drives the tubular structure to rotate along the shaft. With the rotation of the tubular structure around the axis, when the exciter 201 is irradiated by the light provided by the condenser lens 202 to generate the excitation light, the light provided by the condenser lens 202 can continuously irradiate different parts on the tubular structure, thereby avoiding burning of the fluorescence excitation device due to the concentrated irradiation of the same point.
It should be understood that the above-mentioned arrangement of the driving device to drive the tubular structure to move back and forth along the axial direction or the driving device to drive the tubular structure to rotate along the axis is only exemplary, and those skilled in the art will understand that any movement form of the driving device to drive the tubular structure can achieve the technical effects of the present invention.
With continued reference to fig. 2, a cooling system in a thermal emission facilitating fluorescence excitation device according to the present invention is illustrated.
Illustratively, the cooling system includes a cooling liquid supply system configured to supply a cooling liquid as a cooling medium through the cooling medium passage of the excitation body.
Illustratively, the cooling liquid is cooling water, and the cooling system is connected with a cooling water supply system, thereby continuously providing cooling water for the cooling system for cooling, further promoting the cooling rate, and promoting the heat dissipation effect.
In one example according to the present invention, as shown in fig. 2, the cooling system further includes a cooling liquid pipeline 2031, the cooling liquid pipeline 2031 is communicated with two ends of the tubular structure in the exciting body, and the cooling liquid is circulated in the tubular structure. A pumping device 2032 is connected to the coolant line 2031 for circulating the coolant therethrough to circulate the coolant therethrough. The cooling pipeline is also connected with a heat radiator for cooling the cooling liquid.
Through setting up coolant liquid pipeline 2031, pumping installations 2032 and heat abstractor make cooling system pass through coolant liquid circulative cooling fluorescence excitation device, realize fluorescence excitation device and coolant's direct contact heat dissipation, compare in the current heat dissipation of passing through the air medium transmission, greatly increased heat transfer efficiency, fluorescence excitation device's cooling efficiency has been promoted, make fluorescence excitation device control at a relatively lower temperature, be favorable to improving excitation efficiency and increase life-span, and then increased laser projection device's life-span.
Exemplarily, as shown in fig. 2, the heat dissipation device includes a water discharge radiator 2033, the water discharge radiator 2033 extends a circulation pipeline of the coolant by providing a plurality of rows of coolant circulation pipelines, so that the heat dissipation area of the coolant is greatly increased, and the cooling rate of the coolant is effectively increased.
Illustratively, as shown in fig. 2, the heat dissipation device further includes a fan 2034 disposed opposite to the water discharge radiator 2033, and the fan 2034 is configured to further dissipate heat from the water discharge radiator 2033, so as to further increase the cooling rate of the cooling liquid in the cooling system, and further improve the cooling efficiency of the exciter.
It should be understood that the present embodiment provides the cooling system as including a coolant supply system, a coolant line, a pumping device, and a heat sink device is merely exemplary. It will be appreciated by those skilled in the art that the cooling system may be provided as any device capable of providing a cooling medium, which achieves the technical effects of the present application of cooling the exciter via a cooling medium passage of the exciter.
As shown in fig. 2, in an example according to the present invention, the laser projection apparatus further includes a housing 200, a light source area 204 outside the housing 200 provides a light source, and light projected by the light source is focused by a condensing lens 202 and then projected onto an exciter 201 to generate exciting light.
The exciter 201 is disposed within the housing 200 to form a sealed fluorescence excitation region. The exciting body 201 is arranged in the housing 200, so that the exciting body 201 is effectively prevented from being interfered by dust and the like.
Further, the cooling system is disposed outside the housing, for example, to avoid interference of operation of the cooling system (e.g., vibration of the pumping device, etc.) with fluorescence excitation by the exciting body.
It is right according to above the utility model discloses a convenient radiating fluorescence excitation device's exemplary introduction, according to the utility model discloses a convenient radiating fluorescence excitation device, the coolant who adopts cooling system to provide directly carries out the heat exchange with arousing the body, realize the cooling to arousing the body, the cooling efficiency who arouses the body has been promoted greatly, effectively prevent fluorescence excitation device and burn out because of the high temperature at the in-process that the excited produces the exciting light, and simultaneously, arouse the body and directly take the outside to give off the air through cooling system at the heat that the excited in-process that produces the exciting light, it dispels the heat to have realized arousing body and coolant direct contact, make fluorescence excitation device control at a relatively lower temperature, be favorable to improving and arouse efficiency and increase life.
Example two
The utility model also provides a laser projection device, it includes as embodiment one convenient radiating fluorescence excitation device.
Because according to the utility model discloses a convenient radiating fluorescence excitation device, the coolant that adopts cooling system to provide directly carries out the heat exchange with the excitation body, realize the cooling to the excitation body, the cooling efficiency who excites the body has been promoted greatly, prevent effectively that fluorescence excitation device from burning out because of the high temperature at the in-process that the excitation produced the excitation light, and simultaneously, the excitation body directly takes the outside to give off the air through cooling system in the heat that the excitation produced the in-process of excitation light, realized exciting body and coolant direct contact heat dissipation, make fluorescence excitation device control at a relatively lower temperature, be favorable to improving and arouse efficiency and increase of life-span, according to the utility model discloses a laser projection device has improvement laser projection effect and life-span.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A fluorescence excitation device facilitating heat dissipation, comprising:
the surface of the exciting body is coated with fluorescent powder, and a cooling medium channel is arranged in the exciting body; and
a cooling system providing a cooling medium through the cooling medium passage of the energizer for cooling the energizer.
2. The fluorescence excitation device according to claim 1, further comprising a driving device for driving the excitation body to move.
3. The fluorescence excitation device according to claim 2, wherein the excitation body comprises a tube disposed at both ends of the excitation body, and the tube is made of a soft material.
4. The fluorescence excitation device according to claim 2, wherein the driving device drives the excitation body to perform a reciprocating linear motion or a reciprocating rotational motion.
5. A fluorescence excitation device according to any one of claims 1-4, wherein said cooling system comprises a cooling fluid supply system for supplying a cooling fluid as said cooling medium through said cooling medium channel of said excitation body.
6. Fluorescence excitation device according to claim 5, characterized in that the cooling system further comprises:
the cooling liquid pipeline is connected with the pipelines at the two ends of the exciting body;
a pumping device to pump the cooling liquid to circulate the cooling liquid through the cooling liquid line and the cooling medium passage of the exciting body; and
and the heat dissipation device is used for cooling the cooling liquid.
7. The fluorescence excitation device of claim 6, wherein said heat sink comprises a water-draining heat sink.
8. The fluorescence excitation device of claim 7, wherein said heat sink further comprises a fan disposed opposite said water-draining heat sink.
9. A laser projection device comprising the fluorescence excitation device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498740.3U CN211086894U (en) | 2019-12-31 | 2019-12-31 | Fluorescence excitation device convenient for heat dissipation and laser projection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498740.3U CN211086894U (en) | 2019-12-31 | 2019-12-31 | Fluorescence excitation device convenient for heat dissipation and laser projection device |
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| Publication Number | Publication Date |
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| CN211086894U true CN211086894U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922498740.3U Active CN211086894U (en) | 2019-12-31 | 2019-12-31 | Fluorescence excitation device convenient for heat dissipation and laser projection device |
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