Color wheel device and light-emitting device

Abstract

The invention discloses a color wheel device and a light-emitting device. The color wheel device comprises a substrate and a wavelength conversion layer arranged on the surface of one side of the substrate. The first optical filter is located on the side, provided with the wavelength conversion layer, of the substrate; an air gap is formed between the first optical filter and the wavelength conversion layer; the driving assembly is connected with the substrate and the first optical filter; the turbulent flow assembly is arranged on the driving assembly between the substrate and the first optical filter and is surrounded by the wavelength conversion layer; when the driving assembly is excited, the substrate, the wavelength conversion layer, the first optical filter and the turbulent flow assembly are driven to rotate, and when the turbulent flow assembly rotates, airflow on the inner side of the wavelength conversion layer is disturbed so as to dissipate heat of the wavelength conversion layer. The heat dissipation capability of the wavelength conversion layer can be improved, so that the heat dissipation requirement of the wavelength conversion layer is met, and the luminous efficiency and reliability of the wavelength conversion layer are effectively improved.

Description

Technical Field

[0001] This application relates to the field of optical technology, and in particular to a color wheel device and a light-emitting device. Background Technology

[0002] A color wheel device typically includes a substrate, a phosphor layer disposed on the substrate, a fluorescent filter disposed on one side of the phosphor layer, and a drive mechanism for rotating the phosphor layer. Color wheel devices tend to generate significant heat over extended periods, which is absorbed by the phosphor layer, causing its temperature to rise. Therefore, effective heat dissipation for the phosphor layer is crucial.

[0003] In the prior art, the substrate and the phosphor filter are usually bonded and fixed with adhesive. The adhesive layer is placed inside the phosphor layer and has a certain thickness to form an air gap in the area corresponding to the phosphor filter and the phosphor layer (the area without adhesive layer), so that the phosphor layer can directly contact the air to dissipate heat and transfer the heat directly to the surrounding air.

[0004] However, because the inside of the adhesive layer is a closed environment and there is a boundary layer between the phosphor layer and the air during rotation, the heat accumulated in the phosphor layer is difficult to be dissipated to the air outside the color wheel device. As a result, the phosphor layer cannot be effectively cooled, and the heat dissipation requirements of the phosphor layer cannot be met, which in turn affects the luminous efficiency and reliability of the phosphor layer. Summary of the Invention

[0005] The main technical problem addressed by this application is to provide a color wheel device and a light-emitting device that can solve the problem that the existing technology cannot effectively dissipate heat from the phosphor layer.

[0006] To solve the above-mentioned technical problems, the first technical solution adopted in this application is to provide a color wheel device, including: a substrate and a wavelength conversion layer disposed on one side surface of the substrate; a first filter located on the side of the substrate where the wavelength conversion layer is disposed; wherein an air gap is provided between the first filter and the wavelength conversion layer; a driving component connecting the substrate and the first filter; and a turbulence-disrupting component disposed on the driving component between the substrate and the first filter and surrounded by the wavelength conversion layer; wherein, when the driving component is excited, it drives the substrate, the wavelength conversion layer, the first filter and the turbulence-disrupting component to rotate, and when the turbulence-disrupting component rotates, it disturbs the airflow inside the wavelength conversion layer to dissipate heat from the wavelength conversion layer.

[0007] The color wheel device includes multiple air inlets disposed on the first filter and / or substrate. The orthographic projection of the multiple air inlets in a first direction is located inside the wavelength conversion layer and has no overlapping area with the orthographic projection of the turbulence assembly in the first direction. The first direction is the arrangement direction of the substrate and the first filter. The air inlets, turbulence assembly, and air gap are used to form a heat dissipation channel. When the substrate, the first filter, and the turbulence assembly rotate, cold air enters the color wheel device from the air inlets and is blown toward the wavelength conversion layer under the disturbance of the turbulence assembly to mix with the hot air inside the wavelength conversion layer. The mixed air is then discharged from the color wheel device through the air gap under the disturbance of the turbulence assembly.

[0008] The driving component includes a rotating shaft, which is fixedly connected to the substrate and the first filter; the turbulence component is disposed on the side wall of the rotating shaft between the substrate and the first filter.

[0009] The turbulence-disrupting component includes multiple turbulence-disrupting blades, which are evenly distributed circumferentially along the axis of rotation.

[0010] The baffle blades include fan-shaped or strip-shaped blades; the thickness of the baffle blades is 0.1 to 10 mm.

[0011] The first filter has multiple air inlets, which are located in the gaps between adjacent baffles.

[0012] The first filter has an annular through-hole in its central area. The orthographic projection of the annular through-hole in the first direction covers the orthographic projection of a portion of the rotating shaft and the baffle blades in the first direction. The area of ​​the annular through-hole that does not cover the rotating shaft and the baffle blades forms multiple air inlets.

[0013] The substrate has multiple air inlets, which are located in the gaps between adjacent baffle blades.

[0014] The first filter and the substrate are provided with multiple air inlets; the multiple air inlets are located in the gap between adjacent baffles.

[0015] To solve the above-mentioned technical problems, the second technical solution adopted in this application is to provide a light-emitting device, including an excitation light source and the aforementioned color wheel device; wherein, the wavelength conversion layer of the excitation light source and the color wheel device are disposed opposite to each other, the wavelength conversion layer rotates under the drive of the driving component, the excitation light source emits excitation light to the wavelength conversion layer, so that the wavelength conversion layer absorbs the excitation light and generates laser light, and then filters the laser light out through the first filter.

[0016] The beneficial effects of this application are as follows: This application provides a color wheel device and a light-emitting device, which directly connects the substrate and the first filter through a driving component, thus avoiding the formation of a sealed environment inside the wavelength conversion layer. Furthermore, by providing a turbulence-inducing component on the driving component between the substrate and the first filter, and by surrounding the wavelength conversion layer with the turbulence-inducing component, the turbulence-inducing component can be synchronously driven to rotate when the driving component is excited. The rotation of the turbulence-inducing component generates significant airflow turbulence in the air gap inside the wavelength conversion layer. This significant airflow turbulence breaks the boundary layer between the wavelength conversion layer and the air, enhancing the convective heat transfer efficiency between the wavelength conversion layer and the air, thereby improving the heat dissipation capacity of the wavelength conversion layer and meeting its heat dissipation requirements. This effectively improves the luminous efficiency and reliability of the wavelength conversion layer. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the color wheel device of this application;

[0019] Figure 2 yes Figure 1 A bottom view of the color wheel device;

[0020] Figure 3 yes Figure 1 Top view of the color wheel device;

[0021] Figure 4 This is for Figure 1 A schematic diagram of one embodiment of the central turbulence component;

[0022] Figure 5 This is for Figure 1 A schematic diagram of another embodiment of the central turbulence component;

[0023] Figure 6 This is for Figure 1 A schematic diagram of another embodiment of the central turbulence component;

[0024] Figure 7 This is a schematic diagram of the structure of the second embodiment of the color wheel device of this application;

[0025] Figure 8 yes Figure 7 A bottom view of the color wheel device;

[0026] Figure 9 yes Figure 7Top view of the color wheel device;

[0027] Figure 10 This is a schematic diagram of the structure of the third embodiment of the color wheel device of this application;

[0028] Figure 11 yes Figure 10 Top view of the color wheel device;

[0029] Figure 12 yes Figure 10 A bottom view of the color wheel device;

[0030] Figure 13 This is a schematic diagram of the structure of the fourth embodiment of the color wheel device of this application;

[0031] Figure 14 This is a schematic diagram of one embodiment of the light-emitting device of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the application. The singular forms “a,” “said,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless otherwise clearly indicated above. “Multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0034] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0035] It should be understood that the terms "comprising," "including," or any other variations used herein are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] In related technologies, when excitation light illuminates the phosphor layer of a color wheel device, the wavelength conversion material on the phosphor layer converts the excitation light into multi-color laser light. Specific wavelengths of this laser light are transmitted through a fluorescent filter, while the energy of the remaining non-specific wavelengths is converted into heat and absorbed by the phosphor layer, causing its temperature to rise. The brightness of the phosphor layer under laser excitation is related to the temperature of the phosphor material; the higher the temperature, the lower the excitation efficiency and the worse the stability of the phosphor layer. Therefore, heat dissipation of the phosphor layer is extremely important.

[0037] In existing technologies, the substrate and the phosphor filter are typically bonded together with adhesive. The adhesive layer is located inside the phosphor layer and has a certain thickness to create an air gap in the area corresponding to the phosphor filter and the phosphor layer (the area without the adhesive layer). This allows the phosphor layer to directly contact the air for heat dissipation, transferring heat directly to the surrounding air. However, because the area inside the adhesive layer is a sealed environment, and a boundary layer exists between the phosphor layer and the air during rotation, the heat accumulated at the phosphor layer is difficult to dissipate to the air outside the color wheel device. This results in ineffective heat dissipation for the phosphor layer, failing to meet its heat dissipation requirements and consequently affecting its luminous efficiency and reliability.

[0038] Based on the above, this application provides a color wheel device and a light-emitting device, which can solve the problem that the existing technology cannot meet the heat dissipation requirements of the phosphor layer, thus affecting the luminous efficiency and reliability of the phosphor layer.

[0039] The color wheel device provided in this application includes: a substrate and a wavelength conversion layer disposed on one side surface of the substrate; a first filter located on the side of the substrate where the wavelength conversion layer is disposed; wherein an air gap is provided between the first filter and the wavelength conversion layer; a driving assembly connecting the substrate and the first filter; and a turbulence-disrupting assembly disposed on the driving assembly between the substrate and the first filter and surrounded by the wavelength conversion layer; wherein, when the driving assembly is energized, it drives the substrate, the wavelength conversion layer, the first filter, and the turbulence-disrupting assembly to rotate, and when the turbulence-disrupting assembly rotates, it disturbs the airflow inside the wavelength conversion layer to dissipate heat from the wavelength conversion layer. By directly connecting the substrate and the first filter through the driving assembly, a sealed environment can be avoided inside the wavelength conversion layer. Furthermore, a turbulence component is provided on the driving component between the substrate and the first filter, and the turbulence component is surrounded by the wavelength conversion layer. When the driving component is excited, the turbulence component is driven to rotate synchronously. The rotation of the turbulence component generates a large airflow disturbance in the air gap inside the wavelength conversion layer. The large airflow disturbance breaks the boundary layer between the wavelength conversion layer and the air, enhances the convective heat transfer efficiency between the wavelength conversion layer and the air, and improves the heat dissipation capacity of the wavelength conversion layer, thereby meeting the heat dissipation requirements of the wavelength conversion layer and effectively improving the luminous efficiency and reliability of the wavelength conversion layer.

[0040] To illustrate the specific structure of the color wheel device in this application, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the color wheel device of this application. Figure 2 yes Figure 1 A bottom view of the color wheel device. Figure 3 yes Figure 1 Top view of the color wheel device.

[0041] In this embodiment, the color wheel device 100 includes a substrate 10, a wavelength conversion layer 20, a first filter 30, a driving assembly 40, and a turbulence-disrupting assembly 50. The wavelength conversion layer 20 is disposed on one surface of the substrate 10. The first filter 30 is located on the side of the substrate 10 where the wavelength conversion layer 20 is disposed, and an air gap 60 is provided between the first filter 30 and the wavelength conversion layer 20. The driving assembly 40 connects the substrate 10 and the first filter 30. The turbulence-disrupting assembly 50 is disposed on the driving assembly 40 between the substrate 10 and the first filter 30 and is surrounded by the wavelength conversion layer 20. When the driving assembly 40 is activated, it drives the substrate 10, the wavelength conversion layer 20, the first filter 30, and the turbulence-disrupting assembly 50 to rotate. The rotation of the turbulence-disrupting assembly 50 disturbs the airflow inside the wavelength conversion layer 20, thereby dissipating heat from the wavelength conversion layer 20.

[0042] In this embodiment, the substrate 10 is a circular rotating wheel, and the wavelength conversion layer 20 is disposed on the outer side of the substrate 10 and is in the shape of a ring. In some embodiments, the wavelength conversion layer 20 is circularly symmetrical with respect to the rotation axis 42.

[0043] In this embodiment, the wavelength conversion layer 20 includes at least one wavelength conversion material.

[0044] Wavelength conversion materials are used to absorb incident light of a certain wavelength and, upon excitation, emit light of a different wavelength than the incident light. Wavelength conversion materials include phosphors, fluorescent dyes, and quantum dots, with phosphors being the most commonly used.

[0045] In some embodiments, the wavelength conversion material in the wavelength conversion layer 20 is a phosphor. The phosphor is mixed with an adhesive, and the mixture is printed or extruded onto one side of the substrate 10 to form a sheet-like structure, thereby forming the wavelength conversion layer 20, which is also the phosphor layer. In some specific embodiments, the adhesive can be an organic adhesive such as silicone or epoxy resin. In other specific embodiments, the adhesive can be an inorganic adhesive such as nano-alumina particles; this application does not impose any limitations on this aspect.

[0046] In this embodiment, the wavelength conversion layer 20 may include a variety of fluorescent materials to form a multi-color segment component, or it may include only one fluorescent material to form a monochromatic circle.

[0047] The fluorescent materials include one or more of red, green, yellow, and blue fluorescent materials. When the excitation light is blue, the red fluorescent material converts the blue excitation light into red fluorescence, the green fluorescent material converts it into green fluorescence, and the yellow fluorescent material converts it into yellow fluorescence. When the excitation light is ultraviolet or near-ultraviolet excitation light, the red fluorescent material converts it into red fluorescence, the green fluorescent material converts it into green fluorescence, the yellow fluorescent material converts it into yellow fluorescence, and the blue fluorescent material converts it into blue fluorescence.

[0048] In some embodiments, when the wavelength conversion layer 20 includes at least two colors of fluorescent material, the fluorescent materials of each color are respectively disposed in different partitions of the wavelength conversion layer 20 to form multiple color partitions. The fluorescent materials of the multiple color partitions, together with the substrate 10 at the corresponding angle and the first filter 30 at the corresponding angle, form a multi-color segment assembly. In some specific embodiments, the multiple color partitions of the wavelength conversion layer 20 may be arranged sequentially around the rotation axis 42.

[0049] In other embodiments, when the wavelength conversion layer 20 includes only one color of fluorescent material, the wavelength conversion layer 20, the substrate 10, and the first filter 30 form a monochromatic circle.

[0050] In this embodiment, the orthographic projection of the first filter 30 in the first direction covers the orthographic projection of the wavelength conversion layer 20 in the first direction. The first direction refers to the arrangement direction of the substrate 10 and the first filter 30.

[0051] The first filter 30 only allows laser light with wavelengths less than or equal to a predetermined wavelength to pass through. The first filter 30 is placed in the output light path of the multi-color laser to filter the laser light so that the color of the output light is closer to or reaches the predetermined color coordinates.

[0052] In some embodiments, substrate 10 also serves as a second light-transmitting sheet. In some specific embodiments, substrate 10 is a blue-transmitting sheet.

[0053] In this embodiment, the excitation light emitted by the excitation light source penetrates the substrate 10 and is incident on the wavelength conversion layer 20. Part of the excitation light is absorbed by the wavelength conversion layer 20 and converted into laser light for emission. Laser light of a specific wavelength penetrates the air gap 60 and the first filter 30 to exit into the external space, while laser light of other wavelengths is reflected back and forth between the substrate 10 and the first filter 30 and converted into heat that is absorbed by the wavelength conversion layer 20.

[0054] In this embodiment, the drive assembly 40 includes a motor 41 and a rotating shaft 42. The rotating shaft 42 is fixedly connected to the substrate 10 and the first filter 30. The substrate 10 and the first filter 30 rotate around the rotating shaft 42.

[0055] Understandably, by directly connecting the substrate 10 and the first filter 30 through the driving component 40, it is possible to avoid forming a sealed environment inside the wavelength conversion layer 20, thereby reducing the accumulation of heat inside the wavelength conversion layer 20.

[0056] In some embodiments, the flow-deflecting component 50 is disposed on the sidewall of the rotating shaft 42 located between the substrate 10 and the first filter 30. In some specific embodiments, the flow-deflecting component 50 is sleeved on the rotating shaft 42. In other specific embodiments, the flow-deflecting component 50 is pre-fabricated and then welded to the sidewall of the rotating shaft 42. In still other specific embodiments, the flow-deflecting component 50 may be integrally formed with the rotating shaft 42, and this application does not limit this.

[0057] In some embodiments, the spoiler assembly 50 includes a plurality of spoiler blades 51. The plurality of spoiler blades 51 are evenly distributed circumferentially along the axis of rotation 42.

[0058] Please refer to the following: Figure 4 , Figure 5 and Figure 6 , Figure 4 This is for Figure 1 A schematic diagram of one embodiment of the central turbulence component. Figure 5 This is for Figure 1 A schematic diagram of another embodiment of the central turbulence component. Figure 6 This is for Figure 1 A schematic diagram of another embodiment of the central turbulence component.

[0059] In this embodiment, the turbulence assembly 50 includes a positioning ring 52, which is used to be sleeved on the rotating shaft 42, and a plurality of turbulence blades 51 are evenly distributed along the circumference of the positioning ring 52.

[0060] In this embodiment, the turbulence blade 51 includes a fan-shaped or elongated blade.

[0061] In some specific implementations, such as Figure 2 and Figure 4 As shown, the spoiler blades 51 are all fan-shaped. In other specific embodiments, such as Figure 5 and Figure 6 As shown, the spoiler blade 51 is elongated.

[0062] In this embodiment, the number of deflection blades 51 in the deflection assembly 50 can be set as needed. The number of deflection blades 51 can be 3, 5, 9, 15 or other numbers. This application does not limit this number.

[0063] In some specific implementations, such as Figure 2 As shown, the number of spoiler blades 51 is 3. In other specific embodiments, such as... Figure 4 As shown, the number of spoiler blades 51 is 5. In some other specific embodiments, such as... Figure 5 As shown, the number of spoiler blades 51 is 9. In other specific embodiments, such as... Figure 6 As shown, the number of spoiler blades 51 is 15.

[0064] In this embodiment, the angle and size of the deflector blade 51 can be set as needed, and this application does not limit them.

[0065] In this embodiment, the thickness of the baffle blade 51 is 0.1–10 mm. In some embodiments, the thickness of the baffle blade 51 is 0.2–1 mm. Since the excited fluorescence is Lambdenum light with a large emission angle, the coupling efficiency of the optical path can be improved when the thickness of the baffle blade 51 is in the range of 0.2–1 mm.

[0066] In this embodiment, when the motor 41 of the drive assembly 40 is energized, it drives the rotating shaft 42 to rotate, thereby driving the substrate 10, wavelength conversion layer 20, first filter 30 and turbulence assembly 50 to rotate. Since the turbulence assembly 50 includes multiple turbulence blades 51, it can generate high-speed turbulent airflow when rotating. The high-speed turbulent airflow directly impacts the air gap 60 inside the wavelength conversion layer 20 to break the boundary layer between the wavelength conversion layer 20 and the air, increase the convective heat transfer coefficient between the wavelength conversion layer 20 and the air, and make the heat accumulated on the wavelength conversion layer 20 quickly transferred to the air through the turbulent airflow, and then discharged from the color wheel device 100 through the air gap 60, thereby achieving effective heat dissipation of the wavelength conversion layer 20.

[0067] Understandably, by providing a turbulence component 50 on the driving component 40 between the substrate 10 and the first filter 30, and by surrounding the wavelength conversion layer 20 with the turbulence component 50, this embodiment can synchronously drive the turbulence component 50 to rotate when the driving component 40 is excited. The rotation of the turbulence component 50 generates a large airflow disturbance in the air gap 60 inside the wavelength conversion layer 20. This large airflow disturbance breaks the boundary layer between the wavelength conversion layer 20 and the air, enhances the convective heat transfer efficiency between the wavelength conversion layer 20 and the air, and improves the heat dissipation capacity of the wavelength conversion layer 20, thereby meeting the heat dissipation requirements of the wavelength conversion layer 20 and effectively improving the luminous efficiency and reliability of the wavelength conversion layer 20.

[0068] Furthermore, in this embodiment, the color wheel device 100 also includes a plurality of air inlets, which are disposed on the first filter 30 and / or the substrate 10. In some embodiments, only the first filter 30 has a plurality of air inlets. In other embodiments, only the substrate 10 has a plurality of air inlets. In still other embodiments, both the first filter 30 and the substrate 10 have a plurality of air inlets, which is not limited in this application.

[0069] In this embodiment, the orthographic projection of the plurality of air inlets in the first direction is located inside the wavelength conversion layer 20, and there is no overlap with the orthographic projection of the baffle assembly 50 in the first direction. The air inlets, baffle assembly 50, and air gap 60 are used to form a heat dissipation channel.

[0070] When the driving component 40 drives the substrate 10, wavelength conversion layer 20, first filter 30, and turbulence component 50 to rotate, cold air enters the color wheel device 100 through the air inlet (e.g., Figure 1 (in the direction indicated by the middle arrow), and blown towards the wavelength conversion layer 20 under the disturbance of the turbulence component 50, so as to mix with the hot air inside the wavelength conversion layer 20. The mixed air is then discharged from the color wheel device 100 through the air gap 60 under the disturbance of the turbulence component 50.

[0071] In a specific implementation scenario, such as Figure 2 and Figure 3 As shown, only the first filter 30 has multiple air inlets 70. These multiple air inlets 70 are located at the gaps between adjacent baffles 51.

[0072] In some embodiments, the air intake 70 is circular. In other embodiments, the air intake 70 may also be square, rectangular, triangular, or other shapes, which are not limited in this application.

[0073] In some embodiments, two air inlets 70 are provided at the gap between adjacent spoiler blades 51. In other embodiments, one, three or more air inlets 70 may be provided at the gap between adjacent spoiler blades 51, and this application does not limit this.

[0074] In this embodiment, when the driving component 40 drives the turbulence component 50 to rotate, the cold air from the outside enters the color wheel device 100 through the multiple air inlets 70 of the first filter 30, and is blown toward the wavelength conversion layer 20 under the disturbance of the turbulence component 50, so as to mix with the hot air inside the wavelength conversion layer 20. The mixed air is then discharged from the color wheel device 100 through the air gap 60 under the disturbance of the turbulence component 50.

[0075] Understandably, by setting multiple air inlets 70 on the first filter 30 and forming a heat dissipation channel with the air inlets 70, the heat around the wavelength conversion layer 20 can be quickly dissipated to the external environment, thereby further improving the heat dissipation capacity of the wavelength conversion layer 20, effectively reducing the heat accumulation at the wavelength conversion layer 20, and thus effectively improving the luminous efficiency and reliability of the wavelength conversion layer 20.

[0076] Please refer to the following: Figure 7 , Figure 8 and Figure 9 , Figure 7 This is a schematic diagram of the second embodiment of the color wheel device of this application. Figure 8 yes Figure 7 A bottom view of the color wheel device. Figure 9 yes Figure 7 Top view of the color wheel device.

[0077] In this embodiment, the color wheel device 200 includes a substrate 10, a wavelength conversion layer 20, a first filter 30, a driving assembly 40, and a turbulence-disrupting assembly 50. The wavelength conversion layer 20 is disposed on one surface of the substrate 10. The first filter 30 is located on the side of the substrate 10 where the wavelength conversion layer 20 is disposed, and an air gap 60 is provided between the first filter 30 and the wavelength conversion layer 20. The driving assembly 40 connects the substrate 10 and the first filter 30. The turbulence-disrupting assembly 50 is disposed on the driving assembly 40 between the substrate 10 and the first filter 30 and is surrounded by the wavelength conversion layer 20. When the driving assembly 40 is activated, it drives the substrate 10, the wavelength conversion layer 20, the first filter 30, and the turbulence-disrupting assembly 50 to rotate. The rotation of the turbulence-disrupting assembly 50 disturbs the airflow inside the wavelength conversion layer 20, thereby dissipating heat from the wavelength conversion layer 20.

[0078] In this embodiment, only the first filter 30 is provided with multiple air inlets 70. The multiple air inlets 70 are located at the gaps between adjacent baffles 51.

[0079] The following description only covers the differences between this embodiment and the first embodiment.

[0080] In this embodiment, the central region of the first filter 30 is provided with an annular through-hole 31. The orthographic projection of the annular through-hole 31 in the first direction covers a portion of the rotating shaft 42 and the baffle blade 51 in the first direction. The areas of the annular through-hole 31 that do not cover the rotating shaft 42 and the baffle blade 51 form multiple air inlets 70. These multiple air inlets 70 are annular segments.

[0081] In this embodiment, when the driving component 40 drives the turbulence component 50 to rotate, cold air from the outside enters the color wheel device 100 through the multiple unobstructed air inlets 70 of the annular through-hole 31 (e.g., Figure 7 (in the direction indicated by the middle arrow), and blown towards the wavelength conversion layer 20 under the disturbance of the turbulence component 50, so as to mix with the hot air inside the wavelength conversion layer 20. The mixed air is then discharged from the color wheel device 100 through the air gap 60 under the disturbance of the turbulence component 50.

[0082] Understandably, by forming multiple air inlets 70 on the annular through-hole 31 of the first filter 30, and by making the air inlets 70, the turbulence component 50, and the air gap 60 form a heat dissipation channel, the heat around the wavelength conversion layer 20 can be quickly dissipated to the external environment, thereby further improving the heat dissipation capacity of the wavelength conversion layer 20, effectively reducing the heat accumulation at the wavelength conversion layer 20, and thus effectively improving the luminous efficiency and reliability of the wavelength conversion layer 20.

[0083] Please refer to the following: Figure 10 , Figure 11 and Figure 12 , Figure 10 This is a structural schematic diagram of the third embodiment of the color wheel device of this application. Figure 11 yes Figure 10 Top view of the color wheel device. Figure 12 yes Figure 10 A bottom view of the color wheel device.

[0084] In this embodiment, the color wheel device 300 includes a substrate 10, a wavelength conversion layer 20, a first filter 30, a driving assembly 40, and a turbulence-disrupting assembly 50. The wavelength conversion layer 20 is disposed on one surface of the substrate 10. The first filter 30 is located on the side of the substrate 10 where the wavelength conversion layer 20 is disposed, and an air gap 60 is provided between the first filter 30 and the wavelength conversion layer 20. The driving assembly 40 connects the substrate 10 and the first filter 30. The turbulence-disrupting assembly 50 is disposed on the driving assembly 40 between the substrate 10 and the first filter 30 and is surrounded by the wavelength conversion layer 20. When the driving assembly 40 is activated, it drives the substrate 10, the wavelength conversion layer 20, the first filter 30, and the turbulence-disrupting assembly 50 to rotate. The rotation of the turbulence-disrupting assembly 50 disturbs the airflow inside the wavelength conversion layer 20, thereby dissipating heat from the wavelength conversion layer 20.

[0085] The following description only covers the differences between this embodiment and the first and second embodiments.

[0086] In this embodiment, only the substrate 10 is provided with a plurality of air inlets 70. The plurality of air inlets 70 are provided at the gaps between adjacent baffle blades 51.

[0087] In some embodiments, the plurality of air inlets 70 are annular segments. In other embodiments, the air inlets 70 may also be circular, square, rectangular, triangular or other shapes, and this application does not limit them.

[0088] In some embodiments, an air inlet 70 is provided at the gap between adjacent spoiler blades 51. In other embodiments, one, three or more air inlets 70 may be provided at the gap between adjacent spoiler blades 51, and this application does not limit this.

[0089] In this embodiment, when the driving component 40 drives the turbulence component 50 to rotate, cold air from the outside enters the color wheel device 100 (e.g., through multiple air inlets 70 on the substrate 10) Figure 10 (in the direction indicated by the middle arrow), and blown towards the wavelength conversion layer 20 under the disturbance of the turbulence component 50, so as to mix with the hot air inside the wavelength conversion layer 20. The mixed air is then discharged from the color wheel device 100 through the air gap 60 under the disturbance of the turbulence component 50.

[0090] Understandably, by providing multiple air inlets 70 on the substrate 10 and forming a heat dissipation channel with the air inlets 70, the heat around the wavelength conversion layer 20 can be quickly dissipated to the external environment, thereby further improving the heat dissipation capacity of the wavelength conversion layer 20, effectively reducing the heat accumulation at the wavelength conversion layer 20, and thus effectively improving the luminous efficiency and reliability of the wavelength conversion layer 20.

[0091] Please see Figure 13 , Figure 13 This is a schematic diagram of the fourth embodiment of the color wheel device of this application.

[0092] In this embodiment, the color wheel device 400 includes a substrate 10, a wavelength conversion layer 20, a first filter 30, a driving assembly 40, and a turbulence-disrupting assembly 50. The wavelength conversion layer 20 is disposed on one surface of the substrate 10. The first filter 30 is located on the side of the substrate 10 where the wavelength conversion layer 20 is disposed, and an air gap 60 is provided between the first filter 30 and the wavelength conversion layer 20. The driving assembly 40 connects the substrate 10 and the first filter 30. The turbulence-disrupting assembly 50 is disposed on the driving assembly 40 between the substrate 10 and the first filter 30 and is surrounded by the wavelength conversion layer 20. When the driving assembly 40 is activated, it drives the substrate 10, the wavelength conversion layer 20, the first filter 30, and the turbulence-disrupting assembly 50 to rotate. The rotation of the turbulence-disrupting assembly 50 disturbs the airflow inside the wavelength conversion layer 20, thereby dissipating heat from the wavelength conversion layer 20.

[0093] The following description only covers the parts of this embodiment that differ from the first, second, and third embodiments.

[0094] In this embodiment, both the first filter 30 and the substrate 10 are provided with a plurality of air inlets 70. The plurality of air inlets 70 are disposed at the gaps between adjacent baffles 51.

[0095] In this embodiment, an annular through-hole 31 is provided in the central region of the first filter 30. The orthographic projection of the annular through-hole 31 in the first direction covers a portion of the rotating shaft 42 and the baffle blade 51 in the first direction. The area of ​​the annular through-hole 31 that does not cover the rotating shaft 42 and the baffle blade 51 forms multiple air inlets 70. Simultaneously, multiple air inlets 70 are also provided on the first filter 30 at the gaps corresponding to adjacent baffle blades 51, in addition to the annular through-hole 31, and on the substrate 10 at the gaps corresponding to adjacent baffle blades 51.

[0096] In this embodiment, when the driving component 40 drives the turbulence component 50 to rotate, cold air from the outside simultaneously enters the color wheel device 100 (e.g., from the first filter 30 and the multiple air inlets 70 of the substrate 10) Figure 13(in the direction indicated by the middle arrow), and blown towards the wavelength conversion layer 20 under the disturbance of the turbulence component 50, so as to mix with the hot air inside the wavelength conversion layer 20. The mixed air is then discharged from the color wheel device 100 through the air gap 60 under the disturbance of the turbulence component 50.

[0097] Understandably, by providing multiple air inlets 70 on both the first filter 30 and the substrate 10, and by forming a heat dissipation channel with the air inlets 70, the heat around the wavelength conversion layer 20 can be quickly dissipated to the external environment, thereby further improving the heat dissipation capacity of the wavelength conversion layer 20, effectively reducing the heat accumulation at the wavelength conversion layer 20, and thus effectively improving the luminous efficiency and reliability of the wavelength conversion layer 20.

[0098] In actual production, the inventors of this application discovered that, under the conditions of the same heating power (8W) of the wavelength conversion layer, the same rotation speed (7200rpm) of the driving component, and the same thickness of air gap between the substrate and the first filter, the phosphor temperature of the wavelength conversion layer in existing color wheel devices is 150.3°C. However, this application, by providing a turbulence-dissipating component 50 on the driving component 40 between the substrate 10 and the first filter 30, and surrounding the wavelength conversion layer 20 with the turbulence-dissipating component 50, and by providing air inlets 70 on the first filter 30 and / or the substrate 10, can reduce the phosphor temperature at the wavelength conversion layer 20 to 95.8°C. Therefore, this application has a significant heat dissipation effect and heat dissipation benefit compared to the prior art.

[0099] Correspondingly, this application provides a light-emitting device.

[0100] Specifically, please refer to Figure 14 , Figure 14 This is a schematic diagram of one embodiment of the light-emitting device of this application.

[0101] In this embodiment, the light-emitting device 500 includes an excitation light source 101 and a color wheel device 100.

[0102] The excitation light source 101 is disposed opposite to the wavelength conversion layer 20 of the color wheel device 100. The wavelength conversion layer 20 rotates under the drive of the drive component 40. The excitation light source 101 emits excitation light to the wavelength conversion layer 20 so that the wavelength conversion layer 20 absorbs the excitation light and generates laser light, which is then filtered out by the first filter 30.

[0103] Understandably, by providing a turbulence component 50 on the driving component 40 between the substrate 10 and the first filter 30, and by providing a plurality of air inlets 70 on the first filter 30, this embodiment can improve the heat dissipation capacity of the wavelength conversion layer 20, meet the heat dissipation requirements of the wavelength conversion layer 20, and effectively improve the luminous efficiency and reliability of the wavelength conversion layer 20. In addition, it can also extend the service life of the color wheel device 100 and improve the light source brightness and optical stability of the light-emitting device 500.

[0104] Unlike existing technologies, this application directly connects the substrate and the first filter via a driving component, thus avoiding the formation of a sealed environment within the wavelength conversion layer. Furthermore, by incorporating a turbulence-generating component on the driving component between the substrate and the first filter, and ensuring the turbulence-generating component is surrounded by the wavelength conversion layer, the turbulence-generating component can be synchronously driven to rotate when the driving component is activated. This rotation generates significant airflow disturbance in the air gap inside the wavelength conversion layer, breaking the boundary layer between the wavelength conversion layer and the air, enhancing the convective heat transfer efficiency between the wavelength conversion layer and the air, thereby improving the heat dissipation capacity of the wavelength conversion layer and meeting its heat dissipation requirements. This, in turn, effectively improves the luminous efficiency and reliability of the wavelength conversion layer. Furthermore, by providing multiple air inlets on the first filter and / or the substrate, and forming heat dissipation channels with the air inlets, the turbulence-generating component, and the air gap, heat around the wavelength conversion layer can be quickly dissipated to the external environment, further improving the heat dissipation capacity of the wavelength conversion layer, thereby extending the lifespan of the color wheel device and improving the optical stability of the light-emitting device.

[0105] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A color wheel device, characterized in that, include: A substrate and a wavelength conversion layer disposed on one side surface of the substrate; A first filter is located on the side of the substrate where the wavelength conversion layer is disposed; wherein an air gap is disposed between the first filter and the wavelength conversion layer; A driving component connects the substrate to the first filter; A turbulence-inducing component is disposed on the driving component between the substrate and the first filter and is surrounded by the wavelength conversion layer; When the driving component is energized, it drives the substrate, the wavelength conversion layer, the first filter, and the turbulence component to rotate. When the turbulence component rotates, it disturbs the airflow inside the wavelength conversion layer to dissipate heat from the wavelength conversion layer.

2. The color wheel device according to claim 1, characterized in that, The color wheel device includes a plurality of air inlets, which are disposed on the first filter and / or the substrate; wherein the orthographic projection of the plurality of air inlets in a first direction is located inside the wavelength conversion layer and has no overlapping area with the orthographic projection of the turbulence component in the first direction; the first direction is the arrangement direction of the substrate and the first filter; The air inlet, the turbulence assembly, and the air gap are used to form a heat dissipation channel. When the substrate, the first filter, and the turbulence assembly rotate, cold air enters the color wheel device through the air inlet and is blown toward the wavelength conversion layer under the disturbance of the turbulence assembly, so as to mix with the hot air inside the wavelength conversion layer. The mixed air is then discharged from the color wheel device through the air gap under the disturbance of the turbulence assembly.

3. The color wheel device according to claim 2, characterized in that, The driving component includes a rotating shaft, which is fixedly connected to the substrate and the first filter. The turbulence-disrupting component is disposed on the side wall of the rotating shaft between the substrate and the first filter.

4. The color wheel device according to claim 3, characterized in that, The turbulence-disrupting assembly includes multiple turbulence-disrupting blades; The multiple turbulence-disrupting blades are evenly distributed circumferentially along the axis of rotation.

5. The color wheel device according to claim 4, characterized in that, The turbulence-disrupting blades include fan-shaped or elongated blades; The thickness of the spoiler blades is 0.1 to 10 mm.

6. The color wheel device according to claim 4, characterized in that, Only the first filter has multiple air inlets; The multiple air inlets are located in the gaps between adjacent deflector blades.

7. The color wheel device according to claim 6, characterized in that, The central region of the first filter is provided with an annular through hole, and the orthographic projection of the annular through hole in the first direction covers the orthographic projection of a portion of the rotating shaft and the deflector blade in the first direction. The area of ​​the annular through hole that does not cover the rotating shaft and the deflector blades forms multiple air inlets.

8. The color wheel device according to claim 4, characterized in that, The substrate has multiple air inlets. The multiple air inlets are located in the gaps between adjacent deflector blades.

9. The color wheel device according to claim 4, characterized in that, Both the first filter and the substrate are provided with a plurality of air inlets; The multiple air inlets are located in the gaps between adjacent deflector blades.

10. A light-emitting device, characterized in that, Includes an excitation light source and a color wheel device as described in any one of claims 1 to 9; The excitation light source is disposed opposite to the wavelength conversion layer of the color wheel device. The wavelength conversion layer rotates under the drive of the driving component. The excitation light source emits excitation light to the wavelength conversion layer so that the wavelength conversion layer absorbs the excitation light and generates laser light, which is then filtered out by the first filter.

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