WO2017162001A1 - Colour wheel device and projector - Google Patents

Abstract

Disclosed are a colour wheel device and a projector. The colour wheel device comprises a substrate (10) and a driving member (20) in driving connection with the substrate (10). The substrate (10) has a first face and a second face opposite each other, wherein the first face is provided with a fluorescence part, and the second face faces the driving member (20). A plurality of protrusions (31, 32, 33) are arranged on the second face, and a plurality of first insulating holes (101) are arranged on the periphery of the connection position of the substrate (10) and the driving member (20), thereby improving the　structure of the colour wheel device and increasing the switching efficiency of the colour wheel device.

Description

Color wheel device and projector Technical field

The utility model relates to the technical field of projectors, in particular to a color wheel device and a projector.

Background technique

In DLP projectors and laser fluorescence technology, the color wheel is an essential part of separating and processing colors.

The existing color wheel generally includes a color wheel substrate and a drive motor that drives the rotation of the color wheel substrate. Wherein, the color wheel is mounted on the front end portion of the sleeve of the driving motor; in addition, a fluorescent layer is disposed on a side of the color wheel substrate facing away from the driving motor, and the fluorescent layer performs color processing on the light incident thereon to obtain a requirement Colored light. However, the color wheel fluorescent layer will continuously generate heat during operation. If this part of heat is not well transferred from the color wheel fluorescent layer, the temperature of the color wheel fluorescent layer will become higher and higher, which in turn affects the color wheel. Conversion efficiency and longevity.

In the existing color wheel, the heat generated by the fluorescent layer is dissipated by the contact with the air during the rotation of the substrate, and the heat is transmitted to the outer casing by the motor. Among them, heat dissipation through the substrate is small, and the heat dissipation area is small, and the heat dissipation amount is low. When the heat is transmitted by the motor, the motor itself generates a large amount of heat, and the heat transferred to the substrate is small, so that the amount of heat dissipation to the substrate is also small. It can be seen that the existing color wheel substrate has poor heat dissipation, so that the overall conversion efficiency of the existing color wheel is low; in addition, when the motor temperature is increased, the working efficiency is also lowered, which further affects the conversion efficiency of the color wheel.

Utility model content

The main object of the present invention is to provide a color wheel device aimed at improving the conversion efficiency of the color wheel device.

In order to achieve the above object, the present invention provides a color wheel device including a substrate and a driving member drivingly coupled to the substrate, the substrate having a first plate surface and a second plate surface facing away from each other. The first plate surface is provided with a fluorescent portion, the second plate surface faces the driving member; the second plate surface is provided with a plurality of protrusions; and the periphery of the substrate and the driving member is disposed at a periphery thereof a plurality of first insulation holes.

Preferably, the position of the plurality of protrusions on the second board surface corresponds to the position of the fluorescent portion on the first board surface.

Preferably, the protrusion is annular and disposed concentrically with the substrate.

Preferably, a plurality of the protrusions are spaced apart along a center to an edge of the substrate, and a protrusion height of the plurality of protrusions on the substrate decreases from a center to an edge of the substrate.

Preferably, the protrusions are cylindrical and are evenly disposed around the center of the substrate.

Preferably, a middle portion of the substrate is provided with a mounting hole, and the driving member comprises a motor, a sleeve drivingly connected to the motor, and an end of the sleeve is provided with an interference fit with the mounting hole. a ring, the fixing ring is provided with a limiting flange at an end of the sleeve, the substrate is sleeved on the fixing ring through the mounting hole, and the limiting flange limits the substrate and the The retaining ring is detached.

Preferably, the fluorescent portion is disposed at a periphery of the mounting hole, and each of the first heat insulating holes is disposed between the fluorescent portion and the mounting hole.

Preferably, the substrate is disposed at a position facing the sleeve with a plurality of second heat insulating holes, and the plurality of the second heat insulating holes are annularly distributed along a center of the substrate.

Preferably, a plurality of the first heat insulating holes are uniformly distributed in a ring shape along a center of the substrate.

The present invention also provides a projector comprising the color wheel device as described above, the color wheel device comprising a substrate and a driving member drivingly connected to the substrate, the substrate having a first board facing away from And a second plate surface, the first plate surface is provided with a fluorescent portion, the second plate surface faces the driving member; the second plate surface is provided with a plurality of protrusions; the substrate and the A plurality of first heat insulating holes are provided at a periphery of the driving member connection position.

On the one hand, the utility model provides a plurality of protrusions on a side of the substrate facing away from the fluorescent portion, so that the heat dissipation area of the substrate is increased, and the heat dissipation amount is increased to ensure the conversion efficiency of the color wheel device; on the other hand, the substrate and the driving member are A plurality of first heat insulating holes are disposed on the periphery of the connecting position, and the heat transfer path and the heat transfer area between the substrate and the driving space are reduced by the first heat insulating hole, so that the driving member is not overheated, and the driving efficiency of the driving member is ensured. , thereby improving the conversion efficiency of the entire color wheel device.

DRAWINGS

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

1 is a schematic structural view of an embodiment of a color wheel device of the present invention;

2 is a schematic structural view of a first embodiment of a substrate of the present invention;

3 is a schematic structural view of a second embodiment of the substrate of the present invention;

4 is a schematic structural view of a third embodiment of the substrate of the present invention;

Figure 5 is a schematic view showing the structure of the driving member of the present invention.

Description of the reference numerals:

Label		name
10	Substrate
20	Drive
31, 32, 33	Bulge
101	First insulated hole
102	Mounting holes
twenty one	motor
twenty two	Sleeve
twenty three	M
twenty four	Limit flange
103	Second insulation hole

The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only one of the present invention. Some embodiments, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back, ...) in the embodiments of the present invention are only used to explain between components in a certain posture (as shown in the drawing). The relative positional relationship, the motion situation, and the like, if the specific posture changes, the directional indication also changes accordingly.

In addition, the descriptions of "first", "second", and the like in the present invention are used for the purpose of description only, and are not to be construed as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

The utility model provides a color wheel device, comprising a substrate and a driving component drivingly connected to the substrate, the substrate having a first plate surface and a second plate surface facing away from each other, wherein the first plate surface is provided with a fluorescent portion The second plate surface faces the driving member, and the second plate surface is provided with a plurality of protrusions; and a plurality of first heat insulating holes are disposed at a periphery of the connection position between the substrate and the driving member.

Specifically, please refer to FIG. 1 and FIG. 2, which is a first embodiment of the present invention. The color wheel device comprises a substrate 10 and a driving member 20 drivingly connected to the substrate 10. The substrate 10 is generally arranged in a circular shape, and the substrate 10 has a first plate surface and a second plate surface facing away from each other, the first plate The surface is provided with a fluorescent portion (not shown) facing the driving member 20, and the fluorescent portion may be formed of phosphor provided on the surface of the substrate 10. When the driving substrate 20 is rotated by the driving substrate 20, the fluorescent portion can excite the laser light incident thereon to generate colored light.

The fluorescent portion generates heat during the excitation process to increase the temperature of the substrate 10. In order to dissipate heat to the substrate 10, the embodiment provides a plurality of protrusions 31 on the second surface of the substrate 10. The specific setting position and number of 31 are not limited as long as the substrate 10 can be rotated and balanced, preferably, the position of the plurality of protrusions 31 on the second board surface and the fluorescent portion on the first board surface Location Correspondingly, to reduce the path of heat transfer, improve heat dissipation efficiency. In addition, the shape of the protrusion 31 is not limited as long as the heat dissipation area of the substrate 10 can be increased. It can be understood that the heat dissipation area of the substrate 10 can be increased by the protrusions 31, so that the heat of the fluorescent portion is more forcedly convected into the air through the substrate 10, thereby reducing the heat conducted to the motor, and ensuring the excitation light of the color wheel fluorescent portion. Under the premise of the action, the temperature of the color wheel is not too high. In addition, since the protrusions 31 are directly disposed on the substrate 10, the heat transfer path is reduced as compared with the prior art, thereby improving heat dissipation efficiency.

Moreover, in order to avoid excessive transfer of heat on the substrate 10 to the driving member 20 and affecting the driving efficiency of the driving member 20, a plurality of first heat insulating layers are disposed on the periphery of the connecting position of the substrate 10 and the driving member 20. The hole 101, the first heat insulating hole 101 may have various shapes such as a circular hole and a square hole, and is not limited herein. The heat transfer path and the heat transfer area between the substrate 10 and the driving member 20 are reduced by the first heat insulating hole 101, and the weight of the substrate 10 can be reduced, and the load of the driving member 20 can be reduced. Wherein, when a plurality of the first heat insulating holes 101 are uniformly distributed along the center of the substrate 10, the amount of heat transfer between the substrate 10 and the driving member 20 can be more reduced.

It can be understood that the color wheel device of the present invention provides a plurality of protrusions 31 on the side of the substrate 10 facing away from the fluorescent portion, so that the heat dissipation area of the substrate 10 is increased, and the heat dissipation amount is increased to ensure the color wheel. The conversion efficiency of the device; on the other hand, a plurality of first thermal insulation holes 101 are provided at the periphery of the connection position of the substrate 10 and the driving member 20, and the heat between the substrate 10 and the driving member 20 is reduced by the first thermal insulation hole 101. The transmission path and the heat transfer area ensure the driving efficiency of the driving member 20, thereby improving the working efficiency of the entire color wheel device.

In the present embodiment, the projections 31 have an annular structure and are disposed around the center of the substrate 10. The protrusion 31 provided in a ring shape has a large heat dissipation area and a good heat effect.

The projections 31 arranged in a ring shape are arranged concentrically with the substrate 10. Thus, it is easy to ensure the balance when the substrate 10 is rotated, and the substrate 10 is rotated, the air resistance is small, and the noise is low.

Further, a plurality of protrusions 31 arranged in a ring shape are distributed along the center to the edge of the substrate 10, so that an annular wind groove is formed between the protrusions 31 to improve the heat dissipation effect.

In addition, the height of the protrusions 31 of the plurality of protrusions 31 on the substrate 10 may be further decreased from the center to the edge of the substrate 10. In this way, the protrusions 31 near the center of the substrate 10 can be ensured to be more in contact with the air, thereby improving the heat dissipation effect and ensuring uniform heat dissipation throughout the substrate 10.

Referring to FIG. 3, a second embodiment of the color wheel device of the present invention is proposed. The overall structure of the second embodiment is similar to that of the first embodiment, and details are not described herein again. The distinguishing feature of the second embodiment from the first embodiment is that, in the second embodiment, the protrusion 32 has a cylindrical structure, and is preferably cylindrical, and the protrusion 32 provided in a cylindrical shape is convenient for molding, and the heat dissipation is relatively uniform. .

In the second embodiment, each of the cylindrical protrusions 32 may be evenly disposed around the center of the substrate 10 to ensure the balance of rotation of the substrate 10 and the balance of heat dissipation of the substrate 10.

Referring to FIG. 4, a third embodiment of the color wheel device of the present invention is proposed. The overall structure of the third embodiment is similar to that of the first embodiment, and details are not described herein again. The difference between the third embodiment and the first embodiment is that, in the third embodiment, the protrusions 33 have an arc-shaped sheet-like structure, and one end of each of the arc-shaped sheet-like projections 33 is disposed outside the substrate 10. The other end extends in the radial direction of the substrate 10 toward its center. The arc-shaped protrusion 33, similar to the fan blade structure, can drive more airflow during the rotation of the substrate 10, so that the heat on the substrate 10 is carried away by the airflow, thereby improving the heat dissipation effect.

Please also refer to Figure 1 to Figure 5. In the above embodiments, in order to reduce the heat transfer between the substrate 10 and the driving member 20, the substrate 10 and the driving member 20 may be further implemented by using the following mounting structure. Specifically, the central portion of the substrate 10 is provided with a mounting hole 102. The driving member 20 includes a motor 21 and a sleeve 22 drivingly coupled to the motor 21, and an end of the sleeve 22 is provided with a fixing ring 23 that is interference-fitted with the mounting hole 102, the fixing ring The end portion of the sleeve 22 is provided with a limiting flange 24, and the substrate 10 is sleeved on the fixing ring 23 through the mounting hole 102. The limiting flange 24 limits the substrate 10 and The retaining ring 23 is detached. Among them, the motor 21 realizes the rotation of the drive substrate 10 by driving the sleeve 22.

In this embodiment, the fluorescent portion is disposed on the outer periphery of the mounting hole 102, and each of the first heat insulating holes 101 is disposed between the fluorescent portion and the mounting hole 102 to preferably reduce heat transfer.

Further, a plurality of the first heat insulating holes 101 are uniformly distributed in a ring shape along a center of the substrate 10, and are preferably disposed concentrically with a center of the substrate 10. Thus, the heat transfer path of the substrate 10 and the driving member 20 is uniformly blocked, and the heat transferred from the substrate 10 to the driving member 20 is greatly reduced.

Further, the substrate 10 is provided with a plurality of second heat insulating holes facing the position of the sleeve 22 103. A plurality of the second heat insulating holes 103 are annularly distributed along a center of the substrate 10.

It should be noted that the substrate 10 also has heat transfer corresponding to the position of the sleeve 22, and the second heat insulating hole 103 can serve as a heat-insulating transmission, and the plurality of second heat insulating holes 103 along the substrate 10 When the center of the circle is evenly distributed, the heat resistance effect is better.

The present invention also provides a projector comprising the color wheel device of the above embodiment. The specific structure of the projector refers to the above embodiment, and since the projector adopts all the technical solutions of all the above embodiments, at least All the beneficial effects brought about by the technical solutions of the above embodiments are not described herein again.

The above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. In the utility model of the present invention, the equivalent structural transformation made by using the specification and the contents of the drawing of the present invention, Or direct/indirect use in other related technical fields are included in the scope of patent protection of the present invention.

Claims (10)

1. A color wheel device includes a substrate and a driving member drivingly connected to the substrate, the substrate having a first plate surface and a second plate surface opposite to each other, wherein the first plate surface is provided with a fluorescent portion, the first The two board faces face the driving member; wherein the second board surface is provided with a plurality of protrusions; and a plurality of first heat insulating holes are disposed at a periphery of the connecting position of the board and the driving member.
2. A color wheel device according to claim 1, wherein a position of said plurality of projections on said second plate surface corresponds to a position of said fluorescent portion on said first plate surface.
3. A color wheel device according to claim 1, wherein said projection is annular and disposed concentrically with said substrate.
4. A color wheel device according to claim 3, wherein a plurality of said protrusions are spaced apart along a center to the edge of said substrate, and a plurality of said protrusions are raised on said substrate The center to the edge of the substrate is decremented.
5. A color wheel device according to claim 1, wherein said projection is cylindrical and uniformly disposed around a center of said substrate.
6. The color wheel device according to any one of claims 1 to 5, wherein a central portion of the substrate is provided with a mounting hole, and the driving member comprises a motor, a sleeve drivingly coupled to the motor, and the sleeve The end of the barrel is provided with a fixing ring that is adapted to the mounting hole, and the fixing ring is provided with a limiting flange at an end of the sleeve, and the substrate is sleeved by the mounting hole. On the fixing ring, the limiting flange limits the separation of the substrate from the fixing ring.
7. The color wheel device according to claim 6, wherein the fluorescent portion is provided on a periphery of the mounting hole, and each of the first heat insulating holes is provided between the fluorescent portion and the mounting hole.
8. The color wheel device according to claim 6, wherein the substrate is disposed at a position of the sleeve with a plurality of second heat insulating holes, and the plurality of the second heat insulating holes are along the substrate The center of the circle is distributed.
9. A color wheel device according to claim 1, wherein a plurality of said first heat insulating holes are annularly distributed along a center of said substrate.
10. A projector comprising the method of any one of claims 1 to 9 Color wheel device.

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