JP2016110985A - Color tone ring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color tone ring device applied to a projector.SOLUTION: A color tone ring device includes: a case having at least one open hole for passing beam: a color tone ring that has a substrate having a light reception surface and a fluorescent powder layer provided on the light reception surface and forming a light spot with beam, and that is provided in the case; a motor that is used for driving so as to rotate the substrate so that the light spot forms an annular passage in the fluorescent powder layer during rotation of the substrate, and that is provided in the case; and a heat conductive element substantially provided, at a mapping position of the annular passage to the case.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a hue ring device, and more particularly to a hue ring device applied to a projector.

  Projectors have been used in various fields from consumer products to high-tech products with the development of science and technology since their appearance, and their application scope has expanded, for example, they have been applied to lectures at large-scale conferences. The projection system is magnified by a projection system, or is applied to a commercial projection screen or television to display the screen in real time according to the contents of the report.

  The projector configuration often seen is roughly divided into a light source module and an optical processing unit. In general, the light source module emits light from a light source, collects light by an optical member, is filtered by a filter and a color wheel, and outputs the processed light to an optical processing unit and then projects the light onto a projection screen. Along with the development of projectors, in a light source module, a hue ring coated with fluorescent powder may be used according to a laser light source to provide light of different wavelengths.

  However, since the energy of the laser beam is very high, when the hue ring receives the laser beam, the unit energy density on the light spot is very large and a very high temperature is generated. Will cause a decline. As the demand for the brightness of the projector increases, the energy of the laser beam also increases, and the phenomenon of such breakage due to overheating of the fluorescent powder or a decrease in luminous efficiency becomes more and more significant.

  In view of the above circumstances, an object of the present invention is to provide a hue ring device that can solve the above problems.

  To achieve the above object, according to an embodiment of the present invention, in a hue ring device applied to a projector, a case having at least one through-hole for allowing a beam to pass therethrough, a substrate having a light receiving surface, and a light receiving device A fluorescent ring that is provided on the surface and includes a fluorescent powder layer on which a light spot is formed, and a hue ring provided in the case, and the light spot forms an annular path in the fluorescent powder layer while the substrate rotates. A color ring device comprising: a motor provided in a case used for driving the substrate to rotate; and a heat conduction element substantially provided at a mapping position of the annular path to the case. To do.

  In one or a plurality of embodiments of the present invention, the heat conduction element is provided outside the case so as to be located on the side close to the light receiving surface of the substrate.

  In one or a plurality of embodiments of the present invention, the heat conduction element is provided in the case so as to be located on the side close to the light receiving surface of the substrate.

  In one or more embodiments of the present invention, the substrate further includes a back surface, and the light receiving surface and the back surface are respectively located on opposite sides of the substrate.

  In one or a plurality of embodiments of the present invention, the heat conduction element is provided outside the case so as to be located on the side close to the back surface of the substrate.

  In one or a plurality of embodiments of the present invention, the heat conduction element is provided in the case so as to be located on the side close to the back surface of the substrate.

  In one or more embodiments of the present invention, the substrate is a transmissive substrate, the number of at least one through-hole is at least two, and the two through-holes pass through the substrate in the beam optical path. Align each other.

  In one or more embodiments of the present invention, the orthographic projection onto the light receiving surface of the heat conducting element and the annular path at least partially overlap.

  In one or more embodiments of the present invention, the orthographic projection onto the light receiving surface of the heat conducting element and the annular path overlap at least half.

  In one or more embodiments of the present invention, during the rotation of the substrate, the orthographic projection onto the light receiving surface of the through hole forms an annular projection belt on the light receiving surface, and the orthographic projection onto the light receiving surface of the heat conducting element. The annular projection belt at least partially overlaps.

  In one or more embodiments of the present invention, the substrate is a reflective substrate.

  In one or more embodiments of the present invention, the heat conducting element is a heat pipe or a cooling fluid pipe.

  According to another embodiment of the present invention, in a hue ring device applied to a projector, a case having at least one through-hole for allowing a beam to pass therethrough, a substrate having a light receiving surface, and fluorescent powder provided on the light receiving surface A region in which the beam irradiates the fluorescent powder layer during the rotation of the substrate is an annular irradiated region, and an annular heat corresponding to the annular irradiated region on the case. A zone is formed, and the annular heat zone is used to drive the substrate to rotate so that it is positioned at a linear position where the beam is projected. There is provided a hue ring device comprising a heat conducting element substantially provided at a corresponding position.

  In one or more embodiments of the present invention, the area of the annular heat zone is slightly larger than the area of the annular irradiated region.

  In summary, in the hue ring device of the present invention, when the heat conducting element is provided in the case, the region in which the beam is directly irradiated onto the fluorescent powder layer (substantially, when the substrate rotates, the light spot of the beam is the fluorescent powder). (Corresponding to the region to be formed in the layer) is substantially provided at the mapping position to the case. As a result, a large amount of heat energy generated at the position of the light spot directly irradiated on the fluorescent powder layer by the beam can be quickly exhausted by the heat conducting element through the substrate and the case. Therefore, the hue ring device of the present invention can avoid the accumulation of a large amount of thermal energy in the region where the beam directly irradiates the fluorescent powder layer, and further increases the resistance of the fluorescent powder layer, indirectly. The luminous efficiency of can be improved.

  The above description is only for discussing problems to be solved by the present invention, means for solving the problems, effects of the present invention, and the like. Specific details of the present invention are described in the following embodiments. And the related drawings.

The following description of the drawings is intended to make the above and other objects, features, advantages and embodiments of the present invention more comprehensible.
It is a reverse view which shows the hue ring apparatus which concerns on one Embodiment of this invention. It is sectional drawing which shows the hue ring apparatus which concerns on one Embodiment of this invention. It is a front view which shows the hue ring in FIG. It is sectional drawing which shows the hue ring apparatus in another embodiment in FIG. It is sectional drawing which shows the hue ring apparatus in another embodiment in FIG. It is sectional drawing which shows the hue ring apparatus in another embodiment in FIG. It is a schematic diagram which shows the heat conductive element in FIG. It is a schematic diagram which shows the heat conductive element in another embodiment in FIG. It is a schematic diagram which shows the heat conductive element in another embodiment in FIG. It is a front view which shows the hue ring apparatus which concerns on one Embodiment of this invention. It is sectional drawing which shows the hue ring apparatus which concerns on one Embodiment of this invention. It is sectional drawing which shows the hue ring apparatus in another embodiment in FIG. 7A. It is sectional drawing which shows the hue ring apparatus in another embodiment in FIG. 7A. It is sectional drawing which shows the hue ring apparatus in another embodiment in FIG. 7A. It is a schematic diagram which shows the heat conductive element in FIG. It is a schematic diagram which shows the heat conductive element in another embodiment in FIG. It is a schematic diagram which shows the heat conductive element in another embodiment in FIG.

  In the following description, numerous practical details are set forth below in order to disclose and clearly explain the several embodiments of the present invention in the drawings. However, it should be understood that these actual details are not intended to limit the invention. That is, these actual details are not essential in some of the embodiments of the present invention. Also, to simplify the drawings, some conventional structures and elements are shown schematically and simply in the drawings.

  Please refer to FIG. 1, FIG. 2 and FIG. FIG. 1 is a back view showing a hue ring device 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing the hue ring device 1 according to one embodiment of the present invention. FIG. 3 is a front view showing the hue ring 12 in FIG.

  As shown in FIGS. 1 to 3, in the present embodiment, the hue ring device 1 can be applied to a projector (not shown). The hue ring device 1 includes a case 10, a hue ring 12, a motor 14, a heat conduction element 16, a plurality of heat radiation fins 18, and a lens 20. The case 10 has a through hole 100 for passing a beam B (for example, a laser beam). The lens 20 is provided in the through hole 100. The hue ring 12 is provided in the case 10 and includes a substrate 120 and a fluorescent powder layer 122. The substrate 120 has a light receiving surface 120a and a back light surface 120b. The light receiving surface 120a and the back surface 120b are respectively located on opposite sides of the substrate 120 (as shown on the right and left sides of the substrate 120 in FIG. 2). A fluorescent powder layer 122 is provided on the light receiving surface 120a. The motor 14 is provided in the case 10 and is used to drive the substrate 120 so as to rotate. The radiation fin 18 is thermally connected to the heat conducting element 16.

  As an example, in a plurality of embodiments, the projector described above includes a digital mirror device (Digital Micromirror Device; DMD) and a combination of the color ring device 1 as a basic configuration, and a digital light processing (Digital Light Processing); DLP) projection system. When the beam B emitted from a light source (not shown) passes through the through hole 100 and reaches the fluorescent powder layer 122 of the hue ring 12, the color gamut that arrives is different (the hue ring 12 is driven by the motor 14). Therefore, it is mixed with colored light. Most of the converted colored lights are mainly red, green and blue. The colored light is further reflected and projected onto the screen by a digital mirror device to form a planar image. As shown in FIG. 2, in the present embodiment, the substrate 120 of the color wheel 12 is a reflective substrate. That is, the hue ring device 1 according to the present embodiment is a reflective hue ring device. After the beam B passes through the through hole 100 and arrives at the fluorescent powder layer 122, the mixed colored light is reflected by the substrate 120 and is further emitted outside the case 10 through the through hole 100.

  Here, first, an area to be irradiated on the fluorescent powder layer 122 on the hue ring 12 where the beam B rotates is defined as an annular irradiated area Z1 (as indicated by two inner circular dotted lines in FIG. 3). When the annular irradiation region Z1 on the fluorescent powder layer 122 continues to be irradiated to the beam B for a long period of time, it is heated by the energy beam B and accumulates a large amount of thermal energy, and the thermal energy is converted into thermal radiation or convection. Thus, it is transmitted to the case 10 and it is proved by an experiment that an annular heat zone H (as shown in FIG. 5A) corresponding to the annular irradiated region Z1 is formed in the case 10 as well. What should be explained here is that the annular irradiated zone Z1 is transmitted to the case 10 so as to be radiated or convected, so that the annular heat zone H in the case 10 is projected by the beam B in general. The area of the annular heat zone H is slightly larger than the area of the annular irradiated region Z1 due to the effect of heat conduction of the case itself.

  In this embodiment, in order to exhaust a large amount of heat energy generated by the hue ring 12, the heat conducting element 16 is disposed substantially along the position corresponding to the case 10 in the annular irradiated region Z1. It is provided outside, that is, provided at a position corresponding to the annular heat zone H in the case 10. As a result, a large amount of heat energy generated in the annular irradiated region Z1 on the fluorescent powder layer 122 is quickly transmitted to the heat radiating fins 18 by the heat conducting element 16 via the substrate 120 and the annular heat zone H of the case 10. 18 can exchange heat with air over a large area, further dissipating heat into the air. Therefore, the hue ring device 1 according to the present embodiment avoids accumulation of a large amount of thermal energy in the annular irradiated region Z1 on the fluorescent powder layer 122, further increases the resistance of the fluorescent powder layer 122, and indirectly causes fluorescence. The luminous efficiency of the powder layer 122 can be improved.

  Viewed from another angle, the beam B can form a light spot in the fluorescent powder layer 122. During the rotation of the substrate 120, the light spot of the beam B can form an annular path P (as indicated by the center line in FIG. 3) in the fluorescent powder layer 122. In the present embodiment, the heat conducting element 16 is substantially provided at the mapping position of the annular path P onto the case 10 (as shown in FIG. 5A). Specifically, the orthographic projection onto the light receiving surface 120a of the substrate 120 of the heat conducting element 16 and the annular path P at least partially overlap (see FIG. 5A). The annular path P defined above provides a clear basis for providing the heat conducting element 16 in the case 10 (because the position of the annular heat zone H substantially corresponds to the position of the annular path P), and the hue The above-mentioned purpose of quickly exhausting a large amount of heat energy in the ring 12 can be reliably achieved. In order to achieve a preferable heat conduction effect, in a plurality of embodiments, the orthographic projection of the heat conduction element 16 on the light receiving surface 120a of the substrate 120 and the annular path P overlap at least half or more.

  When viewed from another angle, while the substrate 120 is rotating, the normal projection of the through hole 100 of the case 10 onto the light receiving surface 120a of the substrate 120 causes the annular projection belt Z2 (the two outer projection belts in FIG. As shown by an annular dotted line). The orthographic projection onto the light receiving surface 120a of the substrate 120 of the heat conducting element 16 and the annular projection belt Z2 at least partially overlap. Similarly, the annular projection belt Z2 defined above provides a clear basis when the heat conducting element 16 is provided in the case 10 (the position of the annular irradiated area Z1 is substantially the same as the position of the annular projection belt Z2). In order to cope with this, the above-described purpose of quickly exhausting a large amount of heat energy in the hue ring 12 can be reliably achieved. In the present embodiment, as shown in FIG. 3, the area of the annular irradiated region Z1 is slightly smaller than the area of the annular projection belt Z2, but the present invention is not limited to this. In actual application, the area of the annular irradiated region Z1 may be equal to the area of the annular projection belt Z2.

  As shown in FIG. 2, in the present embodiment, the heat conducting element 16 is provided outside the case 10 so as to be positioned on the side close to the back surface 120 b of the substrate 120. However, the present invention is not limited to this. See FIGS. 4A-4C. 4A is a cross-sectional view showing a hue ring device 1 according to another embodiment in FIG. FIG. 4B is a cross-sectional view showing the hue ring device 1 in another embodiment in FIG. FIG. 4C is a cross-sectional view showing the hue ring device 1 in another embodiment in FIG.

  As shown in FIG. 4A, the heat conducting element 16 is provided outside the case 10 so as to be positioned on the side close to the light receiving surface 120 a of the substrate 120. As shown in FIG. 4B, the heat conducting element 16 is provided in the case 10 so that the substrate 120 is located on the side close to the back surface 120b. As shown in FIG. 4C, the heat conducting element 16 is provided in the case 10 so as to be positioned on the side close to the light receiving surface 120 a of the substrate 120. In the embodiment of FIGS. 2 and 4A, the heat conducting element 16 is provided outside the case 10, so that one end of the heat conducting element 16 may be directly extended and connected to the heat radiating fin 18. In the embodiment of FIGS. 4B and 4C, since the heat conducting element 16 is provided in the case 10, one end of the heat conducting element 16 must extend through the case 10 and be connected to the heat radiating fin 18. In the embodiment of FIG. 4A, when the heat conducting element 16 is provided outside the case 10, the position of the lens 20 needs to be further avoided.

  In each of the above-described embodiments, the position of the heat conducting element 16 provided in the case 10 is slightly different. However, it corresponds to the principle that the heat conducting element 16 is provided in the case 10 along the annular path P defined above. In other words, if the normal projection onto the light receiving surface 120a of the heat conducting element 16 overlaps the annular path P, the annular irradiated area Z1, the annular projection belt Z2, or the annular heat zone H defined above as much as possible, The purpose of quickly exhausting a large amount of heat energy can be achieved. In other embodiments, a person skilled in the art may irradiate the hue ring 12 with two or more beams B in the case 10 through two or more through holes 100, respectively, according to actual needs. Well, this embodiment can also effectively remove thermal energy using the principles described above.

  See FIG. 5A. FIG. 5A is a schematic diagram showing the heat conducting element 16 in FIG. 1. In the present embodiment, the hue ring device 1 includes a total of four heat conducting elements 16, and the two outer heat conducting elements 16 overlap the annular path P and the annular heat zone H, but the two inner heat conducting elements. An element 16 is provided substantially along the inner edge of the annular heat zone H. Although the inner two heat conducting elements 16 do not overlap the annular path P and the annular heat zone H, the effect of assisting heat dissipation can be achieved. However, the present invention is not limited to this. See FIGS. 5B and 5C. FIG. 5B is a schematic diagram showing a heat conducting element 16 in another embodiment in FIG. 1. FIG. 5C is a schematic diagram showing a heat conducting element 16 in another embodiment in FIG. 1.

  As shown in FIG. 5B, in the present embodiment, the hue ring device 1 similarly includes four heat conduction elements 16, and the two outer heat conduction elements 16 overlap the annular path P and the annular heat zone H. The inner two heat conducting elements 16 are provided substantially along the inner edge of the annular heat zone H. What should be explained is that the ratio of the normal projection onto the light receiving surface 120a of the heat conducting element 16 according to the present embodiment and the annular path P and the annular heat zone H overlap as compared with the embodiment shown in FIG. 5A. Total heat transfer increases.

  By simply trying to achieve the object of the present invention to quickly dissipate a large amount of thermal energy in the color wheel 12, the color wheel device 1 may include only two heat conducting elements 16, as shown in FIG. 5C. In the present embodiment, the orthographic projection of each of the plurality of heat conducting elements 16 on the light receiving surface 120a and the annular path P overlap in approximately half. Further, in another embodiment, the hue ring device 1 may include only a single heat conducting element 16, and the orthographic projection of the heat conducting element 16 on the light receiving surface 120a and the annular path P are at least half or more. Overlap.

  In some embodiments, the heat conducting element 16 is a heat pipe or a cooling fluid pipe, but the present invention is not limited thereto. In some embodiments, the heat conducting element 16 may be fixed so as to be attached or fitted to the case 10, but the present invention is not limited thereto.

  See FIGS. 6 and 7A. FIG. 6 is a front view showing the hue ring device 3 according to one embodiment of the present invention. FIG. 7A is a cross-sectional view showing the hue ring device 3 according to an embodiment of the present invention.

  As shown in FIGS. 6 and 7A, in the present embodiment, the hue ring device 3 can be similarly applied to a projector (not shown). The hue ring device 3 includes a case 30, a hue ring 32, a motor 14, a heat conducting element 16, a plurality of heat radiation fins 18, and two lenses 40a and 40b. The case 30 has two through holes 300a and 300b for allowing the beam B (for example, a laser beam) to pass therethrough. Two lenses 40a and 40b are provided in the through holes 300a and 300b, respectively. The hue ring 32 is provided in the case 30 and includes a substrate 320 and a fluorescent powder layer 122. The two through holes 300 a and 300 b are aligned with each other through the substrate 320. The substrate 320 has a light receiving surface 320a and a back light surface 320b. The light receiving surface 320a and the back surface 320b are respectively located on opposite sides of the substrate 320 (as shown on the left and right sides of the substrate 320 in FIG. 7A). A fluorescent powder layer 122 is provided on the light receiving surface 320a. The motor 14 is provided in the case 30 and is used to drive the substrate 320 so as to rotate. The radiation fin 18 is thermally connected to the element 16. In another embodiment of the plurality of beams, a through hole may be provided for each of the plurality of beams B based on the principle described above. For example, both sides of the case 30 may be provided for the two beams B. The four through-holes located in are provided, that is, the number of through-holes is a multiple of two.

  As shown in FIG. 7A, in the present embodiment, the substrate 320 of the color wheel 32 is a transmissive substrate. That is, the hue ring device 3 according to the present embodiment is a transmission type color ring device. After the beam B passes through the through hole 300a and arrives at the substrate 320, the beam B continues to pass through the substrate 320 and arrives at the fluorescent powder layer 122 to be mixed with colored light, and then the case 30 through the through hole 300b. Inject outside.

  In the present embodiment, in order to exhaust a large amount of heat energy generated by the hue ring 32, the heat conduction element 16 is similarly substantially positioned at a position corresponding to the case 30 in the annular irradiated region on the fluorescent powder layer 122. The heat conducting element 16 is provided at a position corresponding to the annular heat zone H of the case 30 (see FIG. 8A). Thereby, a large amount of heat energy generated in the annular irradiated region Z1 on the fluorescent powder layer 122 is quickly transmitted to the heat radiating fin 18 by the heat conducting element 16 through the substrate 320 and the annular heat zone H of the case 30. . Therefore, the hue ring device 3 according to the present embodiment also avoids accumulation of a large amount of thermal energy in the annular irradiated region Z1 on the fluorescent powder layer 122, and further increases the resistance of the fluorescent powder layer 122, thereby indirectly. In addition, the luminous efficiency of the fluorescent powder layer 122 can be improved.

  Viewed from another angle, the beam B forms a light spot in the fluorescent powder layer 122. While the substrate 320 is rotating, the light spot of the beam B forms an annular path P in the fluorescent powder layer 122 (see the center line in FIG. 3). In the present embodiment, the heat conducting element 16 is substantially provided at the mapping position of the annular path P onto the case 30 (as shown in FIG. 8A). Specifically, the orthographic projection onto the light receiving surface 320a of the substrate 320 of the heat conducting element 16 and the annular path P at least partially overlap (see FIG. 8A). The annular path P defined above provides a clear basis for providing the heat conducting element 16 in the case 30 (because the position of the annular heat zone H substantially corresponds to the position of the annular path P), and the hue The above-described object of quickly exhausting a large amount of heat energy in the ring 32 can be reliably achieved. In order to achieve a preferable heat conduction effect, in a plurality of embodiments, the orthographic projection of the heat conduction element 16 on the light receiving surface 320a of the substrate 320 and the annular path P overlap at least half or more.

  When viewed from another angle, during the rotation of the substrate 320, the normal projection of the through hole 300a of the case 30 onto the light receiving surface 320a of the substrate 320 forms an annular projection belt Z2 on the light receiving surface 320a (the outer side in FIG. 3). 2 circular dotted lines). The orthographic projection onto the light receiving surface 320a of the substrate 320 of the heat conducting element 16 and the annular projection belt Z2 at least partially overlap. Similarly, the annular projection belt Z2 defined above provides a clear basis for providing the heat conducting element 16 in the case 30 (because the position of the annular irradiated area Z1 substantially corresponds to the position of the annular projection belt Z2). ), The above-mentioned purpose of quickly exhausting a large amount of heat energy in the hue ring 32 can be reliably achieved.

  As shown in FIG. 7A, in the present embodiment, the heat conducting element 16 is provided outside the case 30 so as to be located on the side of the substrate 320 close to the back surface 320b. However, the present invention is not limited to this. See FIGS. 7B-7D. FIG. 7B is a cross-sectional view showing the hue ring device 3 in another embodiment in FIG. 7A. FIG. 7C is a cross-sectional view showing the hue ring device 3 in another embodiment in FIG. 7A. FIG. 7D is a cross-sectional view showing the hue ring device 3 in another embodiment in FIG. 7A.

  As shown in FIG. 7B, the heat conducting element 16 is provided outside the case 30 so that the substrate 320 is positioned on the side close to the light receiving surface 320a. As shown in FIG. 7C, the heat conducting element 16 is provided in the case 30 so as to be positioned on the side close to the back surface 320 b of the substrate 320. As shown in FIG. 7D, the heat conducting element 16 is provided in the case 30 so that the substrate 320 is located on the side close to the light receiving surface 320a. In the embodiment of FIGS. 7A and 7B, the heat conducting element 16 is provided outside the case 30, so that one end thereof may be directly connected to the heat dissipating fin 18. In the embodiment of FIGS. 7C and 7D, the heat conducting element 16 is provided in the case 30, so that one end of the heat conducting element 16 must extend through the case 30 and be connected to the heat dissipating fin 18. Further, in the embodiment of FIG. 7A, it is necessary to avoid the lens 40a when the heat conducting element 16 is provided outside the case 30, and in the embodiment of FIG. 7B, the lens 40b is further provided when the heat conducting element 16 is provided outside the case 30. Need to avoid.

  In each of the above-described embodiments, the position of the heat conduction element 16 provided in the case 30 is slightly different. However, if the principle of providing the heat conduction element 16 in the case 30 along the annular path P defined above is satisfied ( That is, orthographic projection on the light receiving surface 320a of the heat conducting element 16 overlaps the annular path P, the annular irradiated area Z1, the annular projection belt Z2 or the annular heat zone H defined above as much as possible), and a large amount of heat in the hue ring 32 The purpose of quickly exhausting energy can be achieved.

  See FIG. 8A. FIG. 8A is a schematic diagram showing the heat conducting element 16 in FIG. 6. In this embodiment, the hue ring device 3 includes a total of four heat conducting elements 16, and the two outer heat conducting elements 16 on the outer periphery avoid the lens 40a (indicated by a dotted line in FIG. 8A) and the circular path P and Overlapping the annular heat zone H, two inner heat conducting elements 16 are provided substantially along the inner edge of the annular heat zone H. Although the inner two heat conducting elements 16 do not overlap the annular path P and the annular heat zone H, an effect of assisting heat dissipation can be achieved. However, the present invention is not limited to this. See FIGS. 8B and 8C. FIG. 8B is a schematic diagram showing a heat conducting element 16 in another embodiment in FIG. FIG. 8C is a schematic diagram showing a heat conducting element 16 in another embodiment in FIG.

  As shown in FIGS. 8B and 8C, the hue ring device 3 includes a single heat conducting element 16 merely to achieve the object of the present invention to quickly dissipate a large amount of thermal energy in the hue ring 32. Alternatively, the orthographic projection on the light receiving surface 320a of the heat conducting element 16 and the annular path P overlap at least half and avoid the lens 40a (shown in dotted lines in FIGS. 8B and 8C). It should be explained that the extending directions at both ends of the heat conducting element 16 in FIG. 8B are opposite, but the extending directions at both ends of the heat conducting element 16 in FIG. 8C are the same. Therefore, if there is sufficient space in the projector 30 on both sides of the case 30 to accommodate the heat dissipating fins 18, the design of the heat conducting element 16 in FIG. 8B is adopted, and there is only the case 30 inside the projector. If there is sufficient space on the side to accommodate the heat radiating fins 18, the design of the heat conducting element 16 in FIG. 8C may be adopted.

  According to the detailed description of the specific embodiment of the present invention described above, in the hue ring device of the present invention, when the heat conducting element is provided in the case, the region where the beam is directly irradiated to the fluorescent powder layer (substantially the substrate is rotated In this case, it is apparent that the light spot of the beam is substantially provided at the mapping position onto the case (corresponding to the region formed in the fluorescent powder layer). As a result, a large amount of heat energy generated at the position of the light spot directly irradiated on the fluorescent powder layer by the beam can be quickly exhausted by the heat conduction element through the substrate and the case. Therefore, the hue ring device of the present invention can avoid accumulation in a region where a large amount of heat energy beam directly irradiates the fluorescent powder layer, and further increases the resistance of the fluorescent powder layer, indirectly. The luminous efficiency of can be improved.

  Although the embodiments of the present invention have been disclosed as described above, this is not intended to limit the present invention, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is based on what is specified in the following appended claims.

1, 3 Color ring device 10, 30 Case 100, 300a, 300b Through hole 12, 32 Color ring 120, 320 Substrate 120a, 320a Light receiving surface 120b, 320b Back surface 122 Fluorescent powder layer
14 Motor
16 Heat conduction element 18 Radiation fin 20, 40a, 40b Lens B Beam H Annular heat zone P Annular path Z1 Annular irradiated area Z2 Annular projection belt

Claims (14)

In the hue ring device applied to the projector,
A case having at least one through-hole for passing the beam;
A hue ring provided in the case, comprising: a substrate having a light receiving surface; and a fluorescent powder layer provided on the light receiving surface and having a light spot formed by the beam;
A motor provided in the case, used to drive the substrate to rotate so that the light spot forms an annular path in the fluorescent powder layer while the substrate rotates.
A heat conducting element provided substantially at a mapping position of the annular path to the case;
A hue ring device comprising:   The hue ring device according to claim 1, wherein the heat conducting element is provided outside the case so as to be positioned on a side closer to the light receiving surface of the substrate.   The hue ring device according to claim 1, wherein the thermal conduction element is provided in the case so as to be positioned on a side closer to the light receiving surface of the substrate.   2. The hue ring device according to claim 1, wherein the substrate further includes a back surface, and the light receiving surface and the back surface are positioned on opposite sides of the substrate, respectively.   The hue ring device according to claim 4, wherein the heat conducting element is provided outside the case so as to be positioned on a side closer to the back surface of the substrate.   The hue ring device according to claim 4, wherein the heat conducting element is provided in the case so as to be positioned on a side closer to the back surface of the substrate.   The substrate is a transmissive substrate, and the number of the at least one through hole is at least 2 or a multiple of 2, and the through holes are aligned with each other through the substrate in the optical path of the beam. The hue ring apparatus as described in any one of these.   The hue ring device according to any one of claims 1 to 7, wherein the orthographic projection of the heat conducting element onto the light receiving surface and the annular path at least partially overlap each other.   The hue ring device according to claim 8, wherein the orthographic projection onto the light receiving surface of the heat conducting element and the annular path overlap with each other by half or more.   During the rotation of the substrate, the normal projection of the through hole onto the light receiving surface forms an annular projection belt on the light receiving surface, and the normal projection onto the light receiving surface of the heat conducting element and the annular projection belt are The hue ring device according to claim 1, which overlaps at least partially.   The hue ring device according to any one of claims 1 to 10, wherein the substrate is a reflective substrate.   The hue ring device according to any one of claims 1 to 11, wherein the heat conducting element is a heat pipe or a cooling fluid pipe. In the hue ring device applied to the projector,
A case having at least one through-hole for passing the beam;
A hue ring provided in the case, comprising: a substrate having a light receiving surface; and a fluorescent powder layer provided on the light receiving surface and having a light spot formed by the beam;
During the rotation of the substrate, the region where the beam irradiates the fluorescent powder layer is an annular irradiated region, and an annular heat zone corresponding to the annular irradiated region is formed in the case. A motor provided in the case, which is used to drive the substrate to rotate so that the beam is positioned approximately at a linear position where the beam is projected;
A heat conducting element substantially provided at a position corresponding to the annular heat zone in the case;
A hue ring device comprising:   The hue ring device according to claim 13, wherein an area of the annular heat zone is slightly larger than an area of the annular irradiated region.

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