WO2018024013A1

WO2018024013A1 - Colour wheel module, light source system, and projection system

Info

Publication number: WO2018024013A1
Application number: PCT/CN2017/084841
Authority: WO
Inventors: 林伟; 谢涛; 李屹
Original assignee: 深圳市光峰光电技术有限公司
Priority date: 2016-08-01
Filing date: 2017-05-18
Publication date: 2018-02-08
Also published as: CN107678233B; CN107678233A; TW201805714A; TWI722224B

Abstract

A colour wheel module, a light source system, and a projection system, the colour wheel module comprising a colour wheel (1), a colour wheel shell (2), and a heat dissipating module, the colour wheel (1) comprising a colour wheel disc (10) provided with wavelength conversion material, and the heat dissipating module comprising a fan (30), a first heat dissipating assembly (31), and a second heat dissipating assembly (32); the inside of the colour wheel shell (2) is provided with an air flow circulation channel, the colour wheel (1), the fan (30), and the first heat dissipating assembly (31) being arranged inside the air flow circulation channel, the second heat dissipating assembly (32) being arranged outside the colour wheel shell (2), and the second heat dissipating assembly (32) being thermally connected to the first heat dissipating assembly (31); the air flow produced by the fan (30) is blown toward the colour wheel (1) in the direction parallel to the colour wheel disc (10) and is blown toward the first heat dissipating assembly (31) along the air flow circulation channel, conveying the heat produced by the colour wheel (1) outside the colour wheel shell (2) by means of the first heat dissipating assembly (31) and the second heat dissipating assembly (31), and thereby increasing the conversion efficiency of the colour wheel (1) and prolonging the service life of the colour wheel (1), the light source system, and the projection system.

Description

Color wheel module, light source system and projection system

Technical field

The present invention relates to the field of projection technology, and more particularly to a color wheel module, a light source system, and a projection system.

Background technique

For projection devices, the color wheel in the projection device is an integral part of separating colors and processing colors. After the excitation light emitted by the light source is incident on the color wheel, the different wavelength converting materials on the excitation color wheel generate laser light of different colors, such as red laser, green laser and blue laser, and the different colors of the laser. Combine a beam of light and display the image.

technical problem

However, in the process of exciting the wavelength-converting material by excitation light, a part of the energy of the excitation light is converted into heat by the wavelength conversion material, and the color wheel is sealed by the color wheel because of its high dustproof requirement. The inside of the wheel housing, which will cause the heat to be effectively discharged. As the heat accumulated in the interior of the color wheel housing increases, the internal temperature of the color wheel housing becomes higher and higher, which affects the conversion efficiency of the color wheel. And service life.

Technical solution

In view of this, the present invention provides a color wheel module, a light source system, and a projection system to solve the problem of affecting the conversion efficiency and service life of the color wheel due to the inability of the internal heat of the color wheel housing to be effectively discharged. .

To achieve the above object, the present invention provides the following technical solutions:

A color wheel module includes a color wheel, a color wheel housing and a heat dissipation module, the color wheel includes a color wheel disk having a wavelength conversion material, the heat dissipation module includes a fan, a first heat dissipation component and a second heat dissipation Component

An inner portion of the color wheel housing has an air circulation circulation passage, the color wheel, the fan and the first heat dissipation assembly are disposed in the air circulation circulation passage, and the second heat dissipation assembly is disposed on the color wheel housing The outside of the body, and the second heat dissipating component is thermally connected to the first heat dissipating component;

Wherein the airflow generated by the fan is blown toward the color wheel in a direction parallel to the color wheel disk, and is blown toward the first heat dissipation component along the air circulation circulation passage to pass the first heat dissipation component and The second heat dissipating component conducts heat generated by the color wheel to the outside of the color wheel housing.

Preferably, the first heat dissipating component is a heat dissipating fin including a first heat dissipating substrate and a plurality of heat dissipating strips, and the plurality of heat dissipating strips are vertically fixed on the first heat dissipating substrate;

The airflow is blown toward the first heat dissipation component in a direction parallel to the first heat dissipation substrate;

Alternatively, the first heat dissipation component is a semiconductor refrigerator.

Preferably, the second heat dissipating component is a sheet fin.

Preferably, the fan is disposed in a cold airflow section of the airflow circulation passage, and the first heat dissipation component is disposed in a hot airflow section of the airflow circulation passage;

The airflow generated by the fan circulates along the mouth-shaped airflow circulation passage.

Preferably, the fan is disposed in a cold airflow section of the airflow circulation passage, the first heat dissipation component is disposed in a hot airflow section of the airflow circulation passage, and the airflow generated by the fan is circulated along a Japanese airflow circulation passage. .

Preferably, the fan is fixed on the first heat dissipating component, and the fan is a centrifugal fan.

Preferably, the fan is disposed in a cold airflow section of the airflow circulation passage, the first heat dissipation component is disposed in a hot airflow section of the airflow circulation passage, and the airflow generated by the fan is along a return type airflow circulation passage. cycle.

Preferably, the heat dissipation module further includes a third heat dissipation component, the third heat dissipation component is disposed inside the color wheel housing, and the third heat dissipation component and the first heat dissipation component form an L-shaped heat dissipation fin sheet.

Preferably, the fan is an axial fan.

Preferably, the color wheel further includes a color wheel shaft and a filter wheel, the color wheel disk and the filter wheel are respectively disposed on two sides of the color wheel shaft, and the airflow generated by the fan is parallel to the The direction of the color wheel is blown toward the color wheel shaft and the color wheel and the filter wheel on both sides of the color wheel shaft;

Wherein the first heat dissipating component portion extends into a gap between the color wheel disc and the filter wheel.

Preferably, the first heat dissipation component and the second heat dissipation component are connected by a heat conductive material;

And/or, the first heat dissipation component and the second heat dissipation component are connected by a heat pipe.

A light source system comprising a light source and a color wheel module, wherein the color wheel module is the color wheel module according to any one of the preceding claims, wherein the excitation light emitted by the light source is incident on the color wheel housing The color wheel is excited to emit a laser beam for image projection.

A projection system comprising a light source system as described above.

Beneficial effect

Compared with the prior art, the technical solution provided by the present invention has the following advantages:

According to the color wheel module, the light source system and the projection system provided by the invention, the airflow generated by the fan inside the color wheel housing is blown toward the color wheel in a direction parallel to the color wheel disk, and the heat generated by the color wheel passes through the interior of the color wheel housing. The flow of air is conducted to the first heat dissipating component inside the color wheel housing. Since the first heat dissipating component is thermally connected to the second heat dissipating component, and the second heat dissipating component is located outside the color wheel housing, the first heat dissipating component can pass through And the second heat dissipating component transmits the heat generated by the color wheel to the outside of the color wheel housing, so that the heat generated by the inner color wheel of the color wheel housing can be effectively discharged, thereby improving the conversion efficiency of the color wheel, extending the color wheel, The service life of the light source system and projection system;

Moreover, since the airflow generated by the fan is blown toward the color wheel in a direction parallel to the color wheel disc, the color wheel can be prevented from obstructing the airflow, so that the airflow can smoothly remove heat from the color wheel, and at the same time, It ensures that the airflow and the color wheel have a certain relative speed, which can improve the heat dissipation capability of the airflow to the color wheel.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can obtain other drawings according to the provided drawings without any creative work.

1 is a schematic diagram of a split structure of a color wheel module according to Embodiment 1 of the present invention;

2 is a cross-sectional structural view of a color wheel module according to Embodiment 1 of the present invention;

3 is a front cross-sectional view of a color wheel housing according to Embodiment 1 of the present invention;

4 is a schematic diagram of a split structure of a color wheel module according to Embodiment 2 of the present invention;

Figure 5 is a front cross-sectional view of a color wheel housing according to a second embodiment of the present invention;

6 is a schematic diagram of a split structure of a color wheel module according to Embodiment 3 of the present invention;

Figure 7 is a front cross-sectional view of a color wheel housing according to a third embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

As described in the background art, the heat inside the existing color wheel housing cannot be effectively discharged, thereby accumulating in the interior of the color wheel housing, so that the internal temperature of the color wheel housing is getting higher and higher, thereby affecting the color wheel conversion. Efficiency and service life.

Based on this, the present invention provides a color wheel module to overcome the above problems existing in the prior art, including a color wheel, a color wheel housing and a heat dissipation module, the color wheel including a color wheel having a wavelength conversion material The heat dissipation module includes a fan, a first heat dissipation component, and a second heat dissipation component;

The invention also provides a light source system comprising the above color wheel module.

The present invention also provides a projection system comprising the above described light source system.

The color wheel module, the light source system and the projection system provided by the invention, the airflow generated by the fan inside the color wheel housing is blown toward the color wheel in a direction parallel to the color wheel disc, and the heat generated by the color wheel passes through the air inside the color wheel housing. The flow is conducted to the first heat dissipation component inside the color wheel housing. Since the first heat dissipation component is thermally connected to the second heat dissipation component, and the second heat dissipation component is located outside the color wheel housing, the first heat dissipation component and the first heat dissipation component can The second heat dissipating component transmits the heat generated by the color wheel to the outside of the color wheel housing, so that the heat generated by the inner color wheel of the color wheel housing can be effectively discharged, thereby improving the conversion efficiency of the color wheel and extending the color wheel and the light source. The service life of the system and projection system;

The above-mentioned objects, features, and advantages of the present invention will be more apparent from the aspects of the invention.

In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention, but the invention may be practiced in other ways than those described herein, and those skilled in the art can do without departing from the scope of the invention. The invention is not limited by the specific embodiments disclosed below.

Embodiment 1

This embodiment provides a color wheel module. As shown in FIG. 1 and FIG. 2, the color wheel module includes a color wheel 1, a color wheel housing 2, and a heat dissipation module. The color wheel 1 includes a color wheel 10 having a wavelength converting material and a driving device for driving the color wheel 10 to rotate, the driving device including a color wheel shaft 11 and a motor and the like. The heat dissipation module includes a fan 30, a first heat dissipation component 31, and a second heat dissipation component 32.

Wherein, the inside of the color wheel housing 2 has an air circulation circulation passage, and the color wheel 1, the fan 30 and the first heat dissipation assembly 31 are both disposed in the air circulation circulation passage inside the color wheel housing 2, and the fan 30 is disposed in the air circulation The cold heat flow section of the passage, the first heat dissipating component 31 is disposed in the hot gas flow section of the air circulation passage, wherein the cold air flow section refers to the flow section of the cooled gas, and the hot air flow section refers to the flow section of the gas after the heat is absorbed. Based on this, the fan 30 is disposed in the cold airflow section, so that the fan 30 can directly blow the cold air to the color wheel 1, so that the heat dissipation capability of the heat dissipation module can be improved; and the first heat dissipation component 31 is disposed in the hot airflow section, so that the first The heat dissipating component 31 directly converts the hot air that absorbs the heat of the color wheel 1 into cold air, thereby further improving the heat dissipation capability of the heat dissipation module.

In addition, the second heat dissipating component 32 is disposed outside the color wheel housing 2, and the second heat dissipating component 32 is thermally coupled to the first heat dissipating component 31, where the thermal connection refers to the second heat dissipating component 32 and the first heat dissipating component 31. A connection that enables heat conduction. Optionally, the second heat dissipation component 32 is connected to the first heat dissipation component 31 by a heat conductive material, and/or the second heat dissipation component 32 is connected to the first heat dissipation component 31 through the heat pipe 33.

The heat conductive material includes, but is not limited to, a heat pipe, a heat conductive sheet, etc., wherein the heat pipe and the heat conductive sheet may be selected from a metal material having a high thermal conductivity such as copper, aluminum, etc.; the heat pipe is a type having thermal superconducting action. The heat equalizing element has a thermal conductivity of 20 to 30 times that of pure copper, and the thermal superconductivity is realized by a phase change of the internal liquid. Moreover, the heat pipes are mostly copper pipes for production processing and shaping.

In the embodiment of the present invention, the heat of the first heat dissipating component 31 is led to the second heat dissipating component 32 by using a heat conductive material such as a heat pipe, and the heat can be transferred to the outer space of the color wheel housing 2 for heat dissipation, thereby saving the color wheel housing. The internal space of the body 2 can facilitate the design of the projection device on the one hand, and can realize the heat dissipation of the second heat dissipation component 32 by utilizing the rapid heat dissipation capability of the external space on the other hand, thereby ensuring the overall heat dissipation efficiency of the heat dissipation module and improving the color. The conversion efficiency of the wheel 1 extends the service life of the color wheel 1, the light source system and the projection system.

In order to further enhance the heat dissipation effect of the heat dissipation module, the first heat dissipation component 31 and the second heat dissipation component 32 in this embodiment may be heat dissipation fins, and the heat dissipation fins are made of metal, alloy or ceramic material, preferably having good thermal conductivity. Light alloys such as C1100/AL6061/AL6063.

As shown in FIG. 1 , the first heat dissipating component 31 in the embodiment is a heat dissipating fin formed by the first heat dissipating substrate 310 and the plurality of heat dissipating strips 311 , and the heat dissipating strips 311 are vertically fixed on the first heat dissipating substrate 310 . In the embodiment of the present invention, the airflow generated by the fan 30 is blown toward the first heat dissipation component 31 in a direction parallel to the first heat dissipation substrate 310. Since the heat dissipation strip 311 has a high contact area with the airflow, the heat can be well transmitted. The heat-dissipating strip 311 has a relatively small obstructive effect on the airflow, and can ensure rapid and smooth circulation of the airflow in the airflow circulation channel. Therefore, the first heat-dissipating component 31 can realize fast and efficient heat dissipation of the heat-generating portion such as the color wheel 1 and its color wheel axis. In addition, the first heat dissipating component 31 can prevent the airflow short circuit from occurring while ensuring smooth airflow. The first heat dissipation substrate 310 and the heat dissipation strip 311 can be fabricated by an integral molding process. Of course, the present invention is not limited thereto.

Optionally, the first heat dissipating component 31 is a semiconductor refrigerator (semiconductor refrigerator, which is made by utilizing a Peltier effect of a semiconductor material. The so-called Peltier effect refers to a DC current passing through two semiconductor materials. When a galvanic couple is formed, one end absorbs heat and one end releases heat.)

Further, the second heat dissipating component 32 in this embodiment may be a chip-shaped heat dissipating fin. Since the contact area of the fin-shaped fins and the air is large, the heat dissipating efficiency is high, and therefore, the second heat dissipating component 32 can be better. The heat is transferred to the air outside the color wheel housing 2.

In this embodiment, the color wheel disc 10 has a disk shape and has at least two wavelength conversion materials on one side surface thereof, and the at least two wavelength conversion materials include a wavelength conversion material that is stimulated to generate yellow light and is stimulated to generate a blue light wavelength conversion material that combines yellow light and blue light generated by excitation to form white light required for projection; or the at least two wavelength conversion materials include wavelength conversion material that is excited to generate red light, and stimulated to generate green light The wavelength converting material and the wavelength converting material that is excited to generate blue light to form a white light required for projection by mixing red, green, and blue light generated by the excitation.

In the process of the color wheel module, not only the wavelength conversion material on the color wheel disk 10 generates heat, but also a driving device (such as a motor) that drives the color wheel disk 10 to generate heat, based on this, The airflow generated by the fan 30 in the embodiment is blown toward the color wheel 1 in a direction parallel to the color wheel disc 10, which is capable of not only dissipating heat to the color wheel disc 10 but also the color wheel shaft 11 disposed perpendicular to the color wheel disc 10, and the like. The drive unit dissipates heat. Generally speaking, the highest normal operating temperature required by the driving device such as the color wheel shaft 11 is lower than that of the color wheel disc 10, that is, the driving device such as the color wheel shaft 11 has higher requirements on the heat dissipating capacity of the heat dissipating module, and based on this, In the embodiment of the invention, the airflow generated by the fan 30 is blown toward the color wheel 1 in a direction parallel to the color wheel disc 10, and the heat dissipation of the color wheel disc 10 and the color wheel shaft 11 is improved while the heat dissipation of the heat dissipation module is improved. ability. Further, the airflow after absorbing the heat of the color wheel 1 is blown toward the first heat dissipating component 31 along the airflow circulation path, and transfers heat to the first heat dissipating component 31, so that the first heat dissipating component 31 and the second heat dissipating component 32 can pass through The heat generated by the color wheel 1 is conducted to the outside of the color wheel housing 2.

In the embodiment, the color wheel 1 further includes a filter wheel corresponding to the color wheel disc 10, and the filter wheel and the color wheel disc 10 are oppositely disposed on both sides of the color wheel shaft 11. Based on this, as shown in FIG. 2 and FIG. 3, the one side portion of the first heat dissipating component 31 in the present embodiment near the color wheel 1 extends into the gap between the filter wheel and the color wheel disc 10, so as to be better. The heat dissipation of the color wheel disc 10 and its driving device is performed, but it should be noted that a certain distance is needed between the first heat dissipating component 31 and the color wheel shaft 11, the color wheel disc 10 and the filter wheel to avoid the first heat dissipating component. 31 affects the rotation of the color wheel 1.

In this embodiment, as shown in FIG. 1 , the first side surface of the color wheel housing 2 has a first opening 20 and a cover plate 21 sealing the first opening 20 , and the first heat dissipation component 31 enters the color wheel housing through the first opening 20 . The inside of the body 2 is fixed to one side of the color wheel 1; the second side of the color wheel housing 2 has a second opening 22 and a sealing cover 23 sealing the second opening 22, the second side being adjacent to the first side side.

Among them, the sealing cover 23 is a sealing cover that opens toward the second opening 22 side, and seals the fan 30 inside the color wheel housing 2 by sealing the second opening 22. The second opening 22 of the color wheel housing 2 has a fitting portion 220 of the fitting fan 30, which fixes the fan 30 to the top of the color wheel 1, and has one side of the fitting portion 220 The air outlet 221 has an air outlet 222 on the other side, so that the airflow generated by the fan 30 is blown toward the color wheel 1 through the air outlet 222, and the airflow that has been radiated through the first heat dissipation assembly 31 flows through the air inlet 221 to the fan 30.

Based on the structure shown in FIG. 1 above, as shown in FIG. 2 and FIG. 3, the airflow generated by the fan 30 in this embodiment circulates along the mouth-shaped airflow circulation passage, wherein the direction indicated by the arrow in FIGS. 2 and 3 indicates the excellent wheel housing. The direction of flow of air inside body 2. The airflow generated by the fan 30 is blown toward the color wheel 1 in the direction parallel to the color wheel disc 10 through the air outlet 222, and the airflow after absorbing the heat of the color wheel 1 is blocked by the color wheel housing 2 on the side of the color wheel disc 10, Blowing toward the first heat dissipating component 31 in a direction parallel to the first heat dissipating component substrate 310, and conducting heat to the first heat dissipating component 31, and then blocking the color wheel housing 2 on the side of the first heat dissipating component 31, The airflow flows through the air inlet 221 to the fan 30 to circulate the airflow.

It should be noted that the fan 30 in this embodiment is an axial fan, and the axial fan refers to a fan that drives the air to flow in the same direction as the direction of the fan shaft. Based on this, the airflow can circulate in a unidirectional manner in the airflow circulation channel of the mouth-shaped type, thereby avoiding the phenomenon of short-circuiting of the airflow, improving the heat dissipation capability and the stability of heat dissipation. The short-circuit phenomenon of the airflow means that the airflow blown by the fan 30 passes through the heat generating member such as the color wheel disc 10, the color wheel shaft 11, and the like, and is directly blown out by the fan 30 without being cooled. The air flow short-circuit phenomenon in the present embodiment refers to a phenomenon in which the hot air flow is blown by the fan 30 without being cooled by the first heat radiation unit 31.

In the embodiment of the present invention, the color wheel 1 is located inside the color wheel housing 2, and the surface of the color wheel housing 2 parallel to the color wheel 1 is provided with a light passing hole for the excitation light emitted from the light source to pass through the color. The wheel housing 2 is irradiated onto the color wheel 1 to excite a laser beam, wherein the laser light can be emitted to the outside of the color wheel housing 2 through an optical path such as a light passing hole.

It should be noted that the light-passing holes on the color wheel housing 2 are sealedly connected with the light source module or other modules in the projection system, so that the color wheel module and the light source module or other modules in the projection system form a sealed cavity. To achieve the sealing and dustproof of the color wheel module. Alternatively, the light-transmitting material is directly disposed on the light-passing hole to separately seal the color wheel module, thereby achieving sealing and dustproofing of the color wheel module.

The color wheel 1 in this embodiment is a reflective color wheel. Based on this, the side surface of the color wheel housing 2 parallel to the color wheel 1 is provided with a light-passing hole on the front casing. The light hole enters the color wheel housing 2, and the laser light is also emitted from the light passing hole. Of course, the present invention is not limited thereto.

In other embodiments, the color wheel 1 can also be a transmissive color wheel. Correspondingly, the two sides of the color wheel housing 2 and the color wheel 1 are respectively provided with a light-passing hole, that is, a light is provided on the front casing. The hole and the corresponding position on the rear casing are also provided with a light-passing hole. At this time, the excitation light enters from the light-passing hole on the front casing, and is emitted by the laser light from the light-passing hole on the rear casing. Wherein, the front housing and the rear housing are fixed by screws or the like to form a color wheel housing, and the front housing and the rear housing are sealed by a sealing ring.

In this embodiment, the color wheel housing 2 is made of a heat dissipating material, so that the color wheel housing 2 itself can dissipate heat. Alternatively, the material of the color wheel housing 2 is metal, alloy or ceramic, preferably light alloy. Of course, the invention is not limited to this. In addition, the outer side surface of the color wheel housing 2 in this embodiment may have a heat sink such as a fin to improve the heat dissipation performance of the color wheel housing 2 itself. Of course, the present invention is not limited thereto.

It can be seen from the above structure that the color wheel module provided by the embodiment drives the air flow inside the color wheel housing through the air flow generated by the fan inside the color wheel housing, and the heat generated by the color wheel under the action of the air flow. a first heat dissipating component that is conducted to the inside of the color wheel housing. Since the first heat dissipating component is thermally connected to the second heat dissipating component and the second heat dissipating component is located outside the color wheel housing, heat in the first heat dissipating component can pass The second heat dissipating component is conducted to the outside of the color wheel housing, so that the heat generated by the inner color wheel of the color wheel housing can be effectively discharged, thereby improving the conversion efficiency of the color wheel and prolonging the use of the color wheel, the light source system and the projection system. life.

Embodiment 2

The color wheel module of the present embodiment is substantially the same as the color wheel module of the first embodiment, and includes a color wheel 1, a color wheel housing 2, and a heat dissipation module. The heat dissipation module includes a fan 30, a first heat dissipation component 31 and a second heat dissipation component 32, which are different in that, as shown in FIG. 4 and FIG. 5, the airflow generated by the fan 30 in this embodiment is along a Japanese airflow. The circulation channel is circulated, the fan 30 is fixed on the first heat dissipation component 31, and the fan 30 and the first heat dissipation component 31 are fixed on the same side of the color wheel 1.

As shown in FIG. 4, one side of the color wheel housing 2 in this embodiment has a first opening 24 and a cover plate 25 sealing the first opening 24; the fan 30 and the first heat dissipation assembly 31 enter the color through the first opening 24. The inside of the wheel housing 2.

Optionally, the first heat dissipation component 31 in the embodiment includes a first heat dissipation substrate 310 and a plurality of heat dissipation fins 311, and the heat dissipation strips 311 are vertically fixed on the first heat dissipation substrate 310. The fan 30 is fixed on the first heat dissipation substrate 310 by means of a fixing hole or the like, and the airflow generated by the fan 30 is blown toward the color wheel in a direction parallel to the first heat dissipation substrate 310. Preferably, the airflow center blown by the fan 30 is directly The coloring wheel shaft 11, that is, the fan 30, directly blows the coloring wheel shaft 11, so that efficient heat dissipation of the color wheel shaft 11 can be preferentially ensured. Specifically, the intermediate portion of the first heat dissipation assembly substrate 310 is not provided with the heat dissipation strip 311 to mount the fan 30 in the intermediate portion of the first heat dissipation assembly substrate 310.

The fan 30 in this embodiment is a centrifugal fan, and the centrifugal fan refers to a fan that pushes air in a direction perpendicular to the fan axis. As shown in FIG. 5, the fan 30 blows air in a direction perpendicular to the fan shaft, wherein the direction of the fan shaft is in a direction indicated by a broken line in FIG. 5, and the air is blown toward the color wheel 1 in a direction parallel to the color wheel disc 10. The part of the airflow after absorbing the heat on the color wheel 1 flows from the upper side of the color wheel 1 to the first heat dissipating component 31 and is dissipated through the first heat dissipating component 31 under the blocking action of the color wheel housing 2 on the side of the color wheel 1. After that, the air is circulated from the upper side of the fan 30 to the fan 30; the part of the airflow after absorbing the heat on the color wheel 1 flows from the lower side of the color wheel 1 to the first heat dissipation under the blocking action of the color wheel housing 2 on the side of the color wheel 1. The assembly 31 is circulated from the lower side to the fan 30 after being radiated by the first heat dissipating unit 31, and based on this, the air current circulated from the upper side of the color wheel 1 and the air stream circulated from the lower side of the color wheel 1 constitute a Japanese-shaped air circulation passage.

The first heat dissipating component 31 and the second heat dissipating component 32 are thermally connected through the heat pipe 33. Of course, the present invention is not limited thereto. For example, the first heat dissipating component 31 and the second heat dissipating component 32 may be directly connected to realize heat. The connection, such as the first heat dissipation component 31, extends through the cover plate 25 and is directly connected to the second heat dissipation component 32.

In this embodiment, as shown in FIG. 5, a side portion of the first heat dissipating component 31 adjacent to the color wheel 1 may extend into a gap between the filter wheel and the color wheel disc 10, so that the color wheel 1 can be better. Cool down. Based on this, the color wheel in this embodiment further includes a filter wheel corresponding to the color wheel disc 10, and the filter wheel and the color wheel disc 10 are oppositely disposed on both sides of the color wheel shaft 11. It should also be noted that a certain gap is required between the first heat dissipating component 31 and the color wheel shaft 11 and the color wheel 10 and the filter wheel 12 to prevent the first heat dissipating component 31 from affecting the rotation of the color wheel 1.

The color wheel module provided in this embodiment drives the air flow inside the color wheel housing through the airflow generated by the fan inside the color wheel housing. Under the action of the air flow, the heat generated by the color wheel is transmitted to the color wheel. a first heat dissipating component inside the housing, wherein the first heat dissipating component is thermally connected to the second heat dissipating component, and the second heat dissipating component is located outside the color wheel housing, so that heat in the first heat dissipating component can pass through the second heat dissipating component It is conducted to the outside of the color wheel housing, so that the heat generated by the inner color wheel of the color wheel housing can be effectively discharged, thereby improving the conversion efficiency of the color wheel and prolonging the service life of the color wheel, the light source system and the projection system.

Embodiment 3

The embodiment of the present invention provides a color wheel module. The color wheel module of the embodiment is substantially the same as the color wheel module of the second embodiment, and includes a color wheel 1, a color wheel housing 2, and a heat dissipation module. The heat dissipation module includes a fan 30, a first heat dissipation component 31 and a second heat dissipation component 32, wherein the fan 30 is located between the first heat dissipation component 31 and the color wheel 1 as shown in FIG. 6 and FIG. And the airflow generated by the fan 30 circulates along the returning or mouth-shaped airflow circulation passage.

As shown in FIG. 6, one side of the color wheel housing 2 in this embodiment has a first opening 26 and a cover plate 27 that seals the first opening 26; the first heat dissipation assembly 31 enters the color wheel housing through the first opening 26. 2 inside; the fan 30 is fixed between the first heat dissipation assembly 31 and the color wheel 1.

Specifically, the first heat dissipating component 31 of the present embodiment includes a first heat dissipating component substrate 310 and a plurality of heat dissipating strips 311 vertically disposed on the first heat dissipating component substrate 310. The heat dissipating strips 311 are in a sheet-like structure. In addition, the heat dissipation module in this embodiment further includes a third heat dissipation component 34 thermally connected to the first heat dissipation component 31. The third heat dissipation component 34 is disposed inside the color wheel housing 2, and the first heat dissipation component 31 and the first The three heat dissipating portions 34 constitute L-shaped heat dissipating fins, wherein the first heat dissipating component 31 and the third heat dissipating portion 34 are respectively disposed corresponding to two adjacent side edges in the color wheel housing 2, and the airflow generated by the fan 30 The first heat dissipation assembly 31 is blown in a direction parallel to the first heat dissipation assembly substrate 310.

In addition, the third heat dissipating component 34 in this embodiment may include a third heat dissipating component substrate and a plurality of heat dissipating strips vertically disposed on the third heat dissipating component substrate, and the airflow generated by the fan 30 is perpendicular to the third heat dissipating component substrate. The direction is blown toward the third heat dissipating component 33. As shown in FIG. 6 and FIG. 7, the fan 30 located in the air circulation passage is an axial fan, and after sucking cold air from the side of the first heat dissipating component 31 in the air circulation passage, the cold air is parallel to the air inlet 300. The color wheel 1 of the color wheel 10 is blown toward the color wheel 1, and the cold air absorbs the heat of the color wheel 1 and is converted into hot air, which is blocked by the color wheel housing 2 of the color wheel 1 facing away from the first heat dissipation unit 31 side. The first heat dissipation component 31 and the third heat dissipation component 34 are blown to the first heat dissipation component 31 and the third heat dissipation component 34 through the air outlet 301, and the heat is transferred to the first heat dissipation component 31 and the third heat dissipation component 34. The cold air is circulated to the fan 30 under the blocking action of the third heat dissipation assembly 34. Based on this, as shown by the arrow in Fig. 7, the airflow inside the color wheel housing 2 in the present embodiment circulates along the return type or the mouth-shaped air circulation passage.

In the structure shown in Fig. 7, the air inlet 300 has a weather strip 28 extending in the circumferential direction of the color wheel disc 10, and the weather strip 28 serves to prevent short-circuiting of the air flow of the air inlet 300 and the air outlet 301. In addition, the first heat dissipating component 31 is directly connected to the second heat dissipating component 32 through the cover plate 27. Of course, the present invention is not limited thereto. In other embodiments, the first heat dissipating component 31 and the second heat dissipating component 32 may also pass through the heat pipe. connection.

Embodiment 4

The present embodiment further provides a light source system, the light source system includes a light source and a color wheel module, and the color wheel module is the color wheel module provided by any of the above embodiments, and the excitation light emitted by the light source passes through the The color wheel housing is incident on the color wheel to excite the laser light for image projection.

The light source system drives the air flow inside the color wheel housing through the airflow generated by the fan inside the color wheel housing, and transmits the heat generated by the color wheel to the inside of the color wheel housing under the action of the air flow. The heat dissipating component is configured to be thermally coupled to the second heat dissipating component and the second heat dissipating component is disposed outside the color wheel housing, so that heat in the first heat dissipating component can be conducted to the outside of the color wheel housing through the second heat dissipating component Therefore, the heat generated by the color wheel inside the color wheel housing can be effectively discharged, thereby improving the conversion efficiency of the color wheel and prolonging the service life of the color wheel, the light source system and the projection system.

Embodiment 5

The embodiment provides a projection system, which includes the light source system provided in Embodiment 4, wherein the projection system drives the air flow inside the color wheel housing through the airflow generated by the fan inside the color wheel housing. The heat generated by the color wheel is transmitted to the first heat dissipating component inside the color wheel housing by the air flow. Since the first heat dissipating component is thermally connected to the second heat dissipating component, and the second heat dissipating component is located outside the color wheel housing, Therefore, the heat in the first heat dissipating component can be transmitted to the outside of the color wheel housing through the second heat dissipating component, so that the heat generated by the inner color wheel of the color wheel housing can be effectively discharged, thereby improving the conversion efficiency of the color wheel and prolonging. The life of the color wheel, light source system and projection system.

The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims

A color wheel module, comprising: a color wheel, a color wheel housing and a heat dissipation module, the color wheel comprising a color wheel disk having a wavelength conversion material, the heat dissipation module comprising a fan, first a heat dissipation component and a second heat dissipation component;

The color wheel module of claim 1 , wherein the first heat dissipating component is a heat dissipating fin including a first heat dissipating substrate and a plurality of heat dissipating strips, wherein the plurality of heat dissipating strips are vertically fixed at the On the first heat dissipation substrate;

3. The color wheel module of claim 1, wherein the second heat dissipating component is a sheet fin.

The color wheel module according to claim 1, wherein the fan is disposed in a cold airflow section of the airflow circulation passage, and the first heat dissipation component is disposed in a hot airflow section of the airflow circulation passage. ;

The color wheel module according to claim 1, wherein the fan is disposed in a cold airflow section of the airflow circulation passage, and the first heat dissipation component is disposed in a hot airflow section of the airflow circulation passage. And the airflow generated by the fan circulates along the Japanese airflow circulation passage.

The color wheel module according to claim 5, wherein the fan is fixed on the first heat dissipating component, and the fan is a centrifugal fan.

The color wheel module according to claim 1, wherein the fan is disposed in a cold airflow section of the airflow circulation passage, and the first heat dissipation component is disposed in a hot airflow section of the airflow circulation passage. And the airflow generated by the fan circulates along the return airflow circulation passage.

The color wheel module of claim 7 , wherein the heat dissipation module further comprises a third heat dissipation component, the third heat dissipation component is disposed inside the color wheel housing, and the The three heat dissipating components and the first heat dissipating component form an L-shaped heat dissipating fin.

9. A color wheel module according to claim 4 or claim 7 wherein the fan is an axial fan.

10. The color wheel module according to claim 1, wherein the color wheel further comprises a color wheel shaft and a filter wheel, and the color wheel disk and the filter wheel are respectively disposed on the color wheel axis. Two sides, and the airflow generated by the fan is blown toward the color wheel axis and the color wheel and the filter wheel on both sides of the color wheel axis in a direction parallel to the color wheel disk;

The color wheel module according to claim 1, wherein the first heat dissipating component and the second heat dissipating component are connected by a heat conductive material;

12. A light source system, comprising: a light source and a color wheel module, wherein the color wheel module is the color wheel module according to any one of claims 1 to 11, the excitation light emitted by the light source is worn After passing through the color wheel housing, it is incident on the wavelength conversion material of the color wheel disk to excite the laser light for image projection.

13. A projection system comprising the light source system of claim 12.