CN205281104U - Fluorescence wheel and projecting apparatus - Google Patents

Abstract

The utility model discloses a fluorescent wheel and a projector. The fluorescent wheel includes a high heat conduction transparent base plate. A fluorescent layer and a filter layer are arranged on one side of the high heat conduction transparent base plate. The filter layer is arranged around the fluorescent layer. The utility model improves the structure of the fluorescent wheel and improves the heat dissipation efficiency of the fluorescent wheel.

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 generally used to excite the laser light incident on the laser source to generate the required color light sequence. As shown in Figure 1, the existing fluorescent wheel mainly includes a color wheel 101, a filter 102 and a drive motor 104 that drives the color wheel 101 to rotate, wherein the color wheel 101 is installed on the front end of the drive motor 104, and the filter 102 is installed On the end face of the sleeve 103 on the drive motor, there is an assembly gap of about 1 millimeter between the two.

Wherein, when the fluorescent wheel is in operation, heat will be generated on the surface of the color wheel 101, and as the output light power of the light source increases, its thermal power consumption will increase accordingly, and the efficiency of the excited light of the phosphor powder will increase with the increase of temperature. When the temperature exceeds a certain critical point, the efficiency drops rapidly. Therefore, if the heat dissipation problem of the color wheel 101 cannot be solved well, it will greatly affect the normal use of the projection device.

However, in the existing fluorescent wheel design, the heat generated by the color wheel 101 is mainly dissipated through volatilization on the surface of the color wheel 101, the heat dissipation speed is slow, and the heat dissipation effect is poor. It has an adverse effect on the convective heat transfer on the back of the color wheel 101 .

Utility model content

The main purpose of the utility model is to provide a fluorescent wheel, aiming at improving the heat dissipation efficiency of the fluorescent wheel.

In order to achieve the above object, the utility model proposes a fluorescent wheel, which includes a high thermal conductivity transparent substrate, one side of the high thermal conductivity transparent substrate is provided with a fluorescent layer and a filter layer, and the filter layer surrounds the fluorescent layer settings.

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

Preferably, the filter layer is a filter bonded on the transparent substrate with high thermal conductivity.

Preferably, the optical filter is bonded to the highly thermally conductive transparent substrate by thermally conductive glue.

Preferably, the optical filter is arranged in a ring shape.

Preferably, the optical filter includes a plurality of arcuate portions, and the plurality of arcuate portions are connected end to end to form the optical filter.

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

Preferably, the transparent substrate with high thermal conductivity is a sapphire substrate.

Preferably, a reflective film layer for reflecting the light excited by the fluorescent layer to the filter layer is provided between the fluorescent layer and the transparent substrate with high thermal conductivity.

The utility model also proposes a projector, which includes the above-mentioned fluorescent wheel, the fluorescent wheel includes a high thermal conductivity transparent substrate, one side of the high thermal conductivity transparent substrate is provided with a fluorescent layer and a filter layer, so The filter layer is arranged around the fluorescent layer.

The utility model adopts a transparent substrate with high thermal conductivity, and is provided with a fluorescent layer and a filter layer surrounding the fluorescent layer on one side of the transparent substrate with high thermal conductivity to form a fluorescent wheel with strong structural integrity. The wheel utilizes the high thermal conductivity transparent substrate and the filter layer on it to increase the heat dissipation area of the fluorescent layer, thereby improving the heat dissipation efficiency of the fluorescent wheel.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

FIG. 1 is a schematic structural view of a fluorescent wheel in the prior art;

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

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

Fig. 4 is a schematic diagram of a cross-sectional structure along A-A in the fluorescent wheel shown in Fig. 3;

Fig. 5 is a structural schematic diagram of another embodiment of the fluorescent wheel of the present invention;

FIG. 6 is a schematic diagram of a cross-sectional structure along B-B of the fluorescent wheel shown in FIG. 5 .

Description of accompanying drawings 2 to 6 labels:

label name 10 High thermal conductivity transparent substrate 20 fluorescent layer 30 filter layer 40 Reflective coating 50 thermal paste 60 Driver

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, the descriptions related to "first", "second" and so on in the present application are only for the purpose of description, and should not be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

The utility model provides a fluorescent wheel.

2 to 6, in an embodiment of the present invention, the fluorescent wheel includes a high thermal conductivity transparent substrate 10, one side of the high thermal conductivity 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 provided.

In this embodiment, when the fluorescent wheel is rotating, the fluorescent layer 20 can excite the laser incident on it to generate a colored light sequence, and the colored light sequence excited by the fluorescent layer 20 is incident on the filter after light collection, shaping and reflection. Layer 30 performs light filtering (color correction, ie color correction). During the rotation of the fluorescent wheel, the fluorescent layer 20 will generate heat. Through the high thermal conductivity of the high thermal conductivity transparent substrate 10, the heat can be quickly diffused out, and can also be transferred to the filter layer 30, through the filter layer 30 Auxiliary cooling. Since the high thermal conductivity transparent substrate 10 and the filter layer 30 increase the heat dissipation area, and the heat transfer efficiency of the high thermal conductivity transparent substrate 10 is relatively high, the overall heat dissipation of the fluorescent wheel is improved.

The above-mentioned high thermal conductivity transparent substrate 10 can be realized by using various substrates with high thermal conductivity and transparent materials. In this embodiment, a sapphire substrate is preferred, and the sapphire substrate has high thermal conductivity and is made of transparent material.

It should be noted that the colored light sequence excited by the fluorescent layer 20 can be directed to the filter layer 30 for filtering after passing through the transparent substrate 10 with high thermal conductivity, or can be filtered between the transparent substrate 10 with high thermal conductivity and the fluorescent layer 20. A reflective film layer 40 is arranged between them, and the light excited by the fluorescent layer 20 is reflected to the filter layer 30 through the reflective film layer 40 for filtering. Certainly, other implementation manners may also be used for implementation, which is not limited here.

In the above embodiments, the fluorescent layer 20 may be an integral ring structure or a ring structure formed by splicing end-to-end arc-shaped parts along a circumferential direction, as shown in FIG. 5 . Similarly, the filter layer 30 can also be a ring structure or a ring structure formed by splicing end-to-end of a plurality of arc-shaped parts along a circumferential direction.

The above-mentioned fluorescent layer 20 can be formed by disposing fluorescent powder on one side of the highly thermally conductive transparent substrate 10 , of course, other methods can also be used, which are not limited here.

The filter layer 30 can be formed by coating one side of the transparent substrate 10 with high thermal conductivity to form the filter layer 30 , or bonding the filter on the transparent substrate 10 with high thermal conductivity.

Among them, in the technical solution of forming the filter layer 30 by coating one side of the transparent substrate 10 with high thermal conductivity, the fluorescent wheel has a stronger structural integrity, better thermal conductivity, and higher heat dissipation efficiency.

In the technical solution using the optical filter, the optical filter is preferably bonded to the highly thermally conductive transparent substrate 10 through a thermally conductive adhesive 50 , which can enhance the connection strength between the optical filter and the highly thermally conductive transparent substrate 10 . Among them, the thermally conductive adhesive 50 is preferably a high thermally conductive adhesive 50 with strong adhesion and high temperature resistance, so as to further enhance the connection strength between the optical filter and the high thermally conductive transparent substrate 10, and ensure that the optical filter is mounted on the high thermally conductive transparent substrate 10. stability, and can also improve the heat conduction efficiency between the optical filter and the high thermal conductivity transparent substrate 10; in addition, it can also avoid when the heat on the high thermal conductivity transparent substrate 10 or the optical filter is high, the optical filter and the high thermal conductivity The transparent substrate 10 is detached.

It should be noted that, in the technical solution using an optical filter, the optical filter is preferably arranged in a ring shape. The optical filter can be an integral ring structure, or a split ring structure. When a split ring structure is used, the filter can be formed by connecting multiple arcs or fan-shaped parts end-to-end. Refer to Fig. 5.

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

To sum up, the fluorescent wheel proposed by the utility model adopts a high thermal conductivity transparent substrate 10, and a fluorescent layer 20 and a filter layer 30 arranged around the fluorescent layer 20 are arranged on one side of the high thermal conductivity transparent substrate 10 to form a A fluorescent wheel with strong structural integrity, the fluorescent wheel uses a high thermal conductivity transparent substrate 10 and a 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 utility model also proposes a projector, which includes the fluorescent wheel of the above-mentioned embodiment. The specific structure of the projector refers to the above-mentioned embodiment. Since this projector adopts all the technical solutions of all the above-mentioned embodiments, it has at least All the beneficial effects brought about by the technical solutions of the above embodiments will not be repeated here.

The above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Under the utility model concept of the utility model, the equivalent structural transformation made by using the specification of the utility model and the contents of the accompanying drawings, Or directly/indirectly used in other related technical fields are all included in the patent protection scope of the present utility model.

Claims (10)

1. a fluorescent wheel, it is characterised in that including high heat conductive transparent substrate, the side of described high heat conductive transparent substrate is provided with fluorescence coating and filter layer, described filter layer is arranged around described fluorescence coating.

2. fluorescent wheel as claimed in claim 1, it is characterised in that at the described side plated film of described high heat conductive transparent substrate to form described filter layer.

3. fluorescent wheel as claimed in claim 1, it is characterised in that described filter layer is the upper optical filter being adhered to described high heat conductive transparent substrate.

4. fluorescent wheel as claimed in claim 3, it is characterised in that described optical filter is by heat-conducting glue and described high heat conductive transparent substrate bonding.

5. fluorescent wheel as claimed in claim 1, it is characterised in that described optical filter is arranged ringwise.

6. fluorescent wheel as claimed in claim 5, it is characterised in that described optical filter includes multiple curved portions, the described optical filter of the end to end formation of multiple curved portions.

7. fluorescent wheel as claimed in claim 1, it is characterised in that fluorescent material is set in the described side of described high heat conductive transparent substrate, to form described fluorescence coating.

8. fluorescent wheel as claimed in claim 1, it is characterised in that described high heat conductive transparent substrate is sapphire substrate.

9. the fluorescent wheel as described in any one of claim 1 to 8, it is characterised in that be provided with, between described fluorescence coating and described high heat conductive transparent substrate, the reflective coating that the light excited by described fluorescence coating is reflected towards described filter layer.

10. a projector, it is characterised in that include the fluorescent wheel as described in claim 1 to 9 any one.