WO2017101772A1

WO2017101772A1 - Fluorescent wheel and projector

Info

Publication number: WO2017101772A1
Application number: PCT/CN2016/109805
Authority: WO
Inventors: 邹思源; 张权; 李屹
Original assignee: 深圳市绎立锐光科技开发有限公司
Priority date: 2015-12-14
Filing date: 2016-12-14
Publication date: 2017-06-22
Also published as: CN205281104U

Abstract

Disclosed is a fluorescent wheel and a projector. The fluorescent wheel comprises a highly thermal conductive transparent substrate (10). A fluorescent layer (20) and a filter layer (30) is provided on one side of the highly thermal conductive transparent substrate (10), and the filter layer (30) is arranged around the fluorescent layer (20). The structure of the fluorescent wheel is improved, and the heat dissipation efficiency of the fluorescent wheel is increased.

Description

Fluorescent wheel and projector

Technical field

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

Background technique

In a single DLP laser projection device, a fluorescent wheel is typically used to excite the laser light incident thereon by the laser source to produce the desired sequence of colored light. As shown in FIG. 1 , the conventional fluorescent wheel mainly comprises a color wheel 101 , a filter 102 and a driving motor 104 for driving the color wheel 101 to rotate. The color wheel 101 is mounted on the front end surface of the driving motor 104, and the filter 102 is mounted. On the end face of the sleeve 103 on the drive motor, there is an assembly gap of about 1 mm therebetween.

Wherein, when the fluorescent wheel is in operation, the surface of the color wheel 101 generates heat, and as the output light power of the light source increases, the thermal power consumption thereof increases, and the efficiency of the phosphor excited by the light increases with temperature. Decline, when the temperature exceeds a certain critical point, the efficiency drops rapidly. Therefore, if the problem of heat dissipation of the color wheel 101 is not well solved, the normal use of the projection device will be greatly affected.

In the design of the existing fluorescent wheel, the heat generated by the color wheel 101 is mainly radiated by the surface of the color wheel 101 to dissipate heat, the heat dissipation rate is slow, the heat dissipation effect is poor, and the assembly gap between the filter 102 and the color wheel 101 is also It has an adverse effect on the convective heat transfer on the back side of the color wheel 101.

Utility model content

The main object of the present invention is to provide a fluorescent wheel, which aims to improve the heat dissipation efficiency of the fluorescent wheel.

In order to achieve the above object, the present invention provides a fluorescent wheel, which comprises a highly thermally conductive transparent substrate, one side of the highly thermally conductive transparent substrate is provided with a fluorescent layer and a filter layer, and the filter layer surrounds the fluorescent Layer settings.

Preferably, the side of the highly thermally conductive transparent substrate is coated to form the filter layer.

Preferably, the filter layer is a filter bonded to the high thermal conductive transparent substrate.

Preferably, the filter is bonded to the highly thermally conductive transparent substrate by a thermal conductive adhesive.

Preferably, the filter is arranged in a ring shape.

Preferably, the filter comprises a plurality of curved portions, and the plurality of curved portions are joined end to end to form the filter.

Preferably, a phosphor is disposed on the one side of the highly thermally conductive transparent substrate to form the phosphor layer.

Preferably, the highly thermally conductive transparent substrate is a sapphire substrate.

Preferably, a reflective film layer that reflects light excited by the fluorescent layer toward the filter layer is disposed between the fluorescent layer and the highly thermally conductive transparent substrate.

The utility model also provides a projector, which comprises a fluorescent wheel as described above, the fluorescent wheel comprises a high thermal conductive transparent substrate, and one side of the high thermal conductive transparent substrate is provided with a fluorescent layer and a filter layer. The filter layer is disposed around the phosphor layer.

The utility model adopts a high thermal conductive transparent substrate, and is provided with a fluorescent layer and a filter layer disposed around the fluorescent layer on one side of the high thermal conductive transparent substrate to form a fluorescent wheel with strong structural integrity. The wheel utilizes a highly thermally conductive transparent substrate and a filter layer thereon to increase the heat dissipation area of the phosphor layer, thereby improving the heat dissipation efficiency of the fluorescent wheel.

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 a fluorescent wheel in the prior art;

2 is a schematic structural view of an embodiment of a fluorescent wheel of the present invention;

3 is a schematic structural view of another embodiment of a fluorescent wheel of the present invention;

Figure 4 is a schematic cross-sectional view of the fluorescent wheel shown in Figure 3 along A-A;

Figure 5 is a schematic structural view of still another embodiment of the fluorescent wheel of the present invention;

Fig. 6 is a schematic cross-sectional view of the fluorescent wheel shown in Fig. 5 taken along line B-B.

2 to 6 are labeled:

标号 Label		名称name
1010	高导热透明基板High thermal conductivity transparent substrate
2020	荧光层 Fluorescent layer
3030	滤光层 Filter layer
4040	反射膜层 Reflective film layer
5050	导热胶Thermal adhesive
6060	驱动件Drive

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 described clearly and completely in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. Example. 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 can be combined with each other, but must be based on the skill A person of ordinary skill in the art can implement the basis. 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 and is not within the protection scope of the present invention.

The utility model provides a fluorescent wheel.

Referring to FIG. 2 to FIG. 6 , in an embodiment of the present invention, the fluorescent wheel comprises a high thermal conductive transparent substrate 10 , and one side of the high thermal conductive transparent substrate 10 is provided with a fluorescent layer 20 and a filter layer 30 , and the filter layer 30 surrounds The fluorescent layer 20 is disposed.

In this embodiment, when the fluorescent wheel rotates, the fluorescent layer 20 can excite the laser light incident thereon to generate a color light sequence, and the colored light sequence generated by the fluorescent layer 20 is collected, shaped, and reflected by the light, and then incident on the filter. Layer 30 is filtered (color corrected, ie, tinted). During the rotation of the fluorescent wheel, the fluorescent layer 20 generates heat, and the high thermal conductivity of the highly thermally conductive transparent substrate 10 enables the heat to be quickly diffused out, and can also be transmitted to the filter layer 30 through the filter layer 30. Auxiliary cooling. Since the high heat conductive transparent substrate 10 and the filter layer 30 increase the heat dissipation area, and the heat transfer efficiency of the high heat conductive transparent substrate 10 is high, the overall heat dissipation of the fluorescent wheel is improved.

The high thermal conductive transparent substrate 10 can be realized by using various substrates having high thermal conductivity and a transparent material. In this embodiment, a sapphire substrate is preferable, and the sapphire substrate has high thermal conductivity and is a transparent material.

It should be noted that the color light sequence generated by the excitation of the fluorescent layer 20 may be filtered to the filter layer 30 after passing through the high thermal conductive transparent substrate 10, or may be in the high thermal conductive transparent substrate 10 and the fluorescent layer 20. The reflective film layer 40 is disposed therebetween, and the light excited by the fluorescent layer 20 is reflected by the reflective film layer 40 to the filter layer 30 for filtering. Of course, other implementation manners may be implemented, which are not limited herein.

In the above embodiment, the fluorescent layer 20 may be a monolithic annular structure or an annular structure formed by splicing a plurality of curved portions in a circumferential direction, as shown in FIG. 5. Similarly, the filter layer 30 may also be an annular structure or an annular structure formed by splicing a plurality of curved portions in a circumferential direction.

The fluorescent layer 20 may be formed by providing phosphor on one side of the highly thermally conductive transparent substrate 10. However, other embodiments may be employed, and are not limited thereto.

The filter layer 30 may be formed by plating a film on one side of the highly thermally conductive transparent substrate 10 to form the filter layer 30, or bonding the filter to the highly thermally conductive transparent substrate 10.

Among them, in the technical solution of forming the filter layer 30 on the side of the high thermal conductive transparent substrate 10, the structure of the fluorescent wheel is strong, the thermal conductivity is good, and the heat dissipation efficiency is high.

In the technical solution using the filter, the filter is preferably bonded to the highly thermally conductive transparent substrate 10 by the thermal conductive adhesive 50, and the thermal conductive adhesive 50 can enhance the connection strength between the filter and the highly thermally conductive transparent substrate 10. The thermal conductive adhesive 50 is preferably a high thermal conductive adhesive 50 having strong adhesiveness and high temperature resistance, so as to further enhance the connection strength between the filter and the high thermal conductive transparent substrate 10, and ensure that the filter is mounted on the high thermal conductive transparent substrate 10. The stability can also improve the heat conduction efficiency between the filter and the highly thermally conductive transparent substrate 10; in addition, the filter and the high thermal conductivity can be avoided when the heat on the high thermal conductive transparent substrate 10 or the filter is high. The transparent substrate 10 is detached.

It should be noted that in the technical solution using the filter, the filter is preferably arranged in a ring shape. The filter may be a monolithic ring structure or a split ring structure. In the case of a split ring structure, the filter may be formed by a plurality of arc portions or a plurality of scallops connected end to end. 5.

In addition, it should be noted that the rotation of the fluorescent layer 20 described above can be driven by the driving member 60. The driving end of the driving member 60 is fixedly connected to the side of the highly thermally conductive transparent substrate 10 facing away from the fluorescent layer 20. The driving member 60 is preferably a motor.

In summary, the fluorescent wheel proposed by the present invention adopts a high thermal conductive transparent substrate 10, and a phosphor layer 20 and a filter layer 30 disposed around the fluorescent layer 20 are disposed on one side of the high thermal conductive transparent substrate 10 to form a fluorescent wheel. The fluorescent wheel with strong structure is integrated, and the fluorescent wheel uses the high thermal conductive transparent substrate 10 and the filter layer 30 thereon to increase the heat dissipation area of the fluorescent layer 20, thereby improving the heat dissipation efficiency of the fluorescent wheel.

The present invention also provides a projector comprising the fluorescent wheel of the above embodiment. The specific structure of the projector refers to the above embodiment. Since the projector adopts all the technical solutions of all the above embodiments, it has at least All the beneficial effects brought about by the technical solutions of the foregoing 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 relevant technical areas including Within the scope of patent protection of the present invention.

Claims

A fluorescent wheel is characterized in that it comprises a highly thermally conductive transparent substrate, one side of which is provided with a fluorescent layer and a filter layer, and the filter layer is disposed around the fluorescent layer.
A fluorescent wheel according to claim 1, wherein said one side of said highly thermally conductive transparent substrate is coated to form said filter layer.
A fluorescent wheel according to claim 1, wherein said filter layer is a filter bonded to said highly thermally conductive transparent substrate.
A fluorescent wheel according to claim 3, wherein said filter is bonded to said highly thermally conductive transparent substrate by a thermally conductive adhesive.
The fluorescent wheel of claim 1 wherein said filter is annularly disposed.
A fluorescent wheel according to claim 5, wherein said filter comprises a plurality of curved portions, and a plurality of curved portions are joined end to end to form said filter.
A fluorescent wheel according to claim 1, wherein a phosphor is provided on said one side of said highly thermally conductive transparent substrate to form said fluorescent layer.
A fluorescent wheel according to claim 1, wherein said highly thermally conductive transparent substrate is a sapphire substrate.
The fluorescent wheel according to any one of claims 1 to 8, characterized in that between the fluorescent layer and the highly thermally transparent transparent substrate, light rays excited by the fluorescent layer are reflected toward the filter layer. Reflective film layer.
A projector comprising the fluorescent wheel according to any one of claims 1 to 9.