CN109709669B - Color wheel structure of projector and heat dissipation scheme thereof - Google Patents
Color wheel structure of projector and heat dissipation scheme thereof Download PDFInfo
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- CN109709669B CN109709669B CN201910177600.8A CN201910177600A CN109709669B CN 109709669 B CN109709669 B CN 109709669B CN 201910177600 A CN201910177600 A CN 201910177600A CN 109709669 B CN109709669 B CN 109709669B
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Abstract
The invention discloses a color wheel structure of a projector, which comprises a color wheel structure cover, wherein a color wheel is arranged in the color wheel structure cover, a heat conduction telescopic device is fixedly arranged beside the color wheel, and the color wheel comprises fluorescent powder, a color wheel sheet substrate, a motor rotating shaft and a fixing device A; the heat conduction telescoping device comprises fixing device B, telescoping device, contact device, the periphery of colour wheel piece substrate sets up the phosphor powder, the centre fixed connection motor pivot of colour wheel piece substrate, colour wheel piece substrate just is located the both sides of motor pivot and is provided with fixing device A, still be provided with the colour wheel mark on the colour wheel piece substrate, the fixed contact device that is provided with in one side of telescoping device, the fixed fixing device B that is provided with of opposite side of telescoping device, fixing device B is fixed to be set up inside the colour wheel structural cover. The inner wall of the color wheel structure cover is provided with a telescopic quick heat conduction device, and the heat on the color wheel is quickly guided to the color wheel structure cover when the heat conduction device is contacted with the fixing device A.
Description
Technical Field
The invention relates to the technical field of projection industry, in particular to a color wheel structure of a projector. Meanwhile, the invention also relates to a heat dissipation scheme of the color wheel structure of the projector.
Background
In a DLP projection system, an input signal is converted into RGB data, which is sequentially written into the SRAM of the DMD, and a light source is focused on a color wheel through a focusing lens, and light passing through the color wheel is then imaged on the surface of the DMD. As the color wheel rotates, red, green, and blue light are sequentially incident on the DMD. The color wheel and video image are sequentially performed so that when red light impinges on the DMD, the mirrors are tilted "on" in accordance with the position and intensity at which the red information should be displayed, as are the green and blue light and video signals. The human visual system concentrates the red, green, blue information and sees a full color image. The image formed on the DMD surface can be projected onto a large screen by a projection lens.
In the optical system, the heat dissipation of the color wheel is an important link, light emitted by the light source is converged into a beam of high-energy light beam, heat generated on the color wheel sheet is accumulated in the color wheel structural cover, and if the internal heat of the color wheel structural cover is accumulated, the internal temperature exceeds the upper limit of the working temperature of the color wheel motor, the color wheel motor is damaged, and the performance of the color wheel motor is reduced or the service life of the color wheel motor is shortened.
At present, an optical system heat dissipation scheme of an ultra-short-focus projector aims at a heat dissipation mode of a color wheel part, and cold air is guided to flow through the surface of a color wheel structure cover by adopting a fan, the surface of the color wheel structure cover is cooled by utilizing the cold air, and heat on the surface of the color wheel structure cover is taken away from the color wheel structure cover, so that heat exchange and heat dissipation are realized.
By adopting an air cooling heat dissipation mode, the heat dissipation effect depends on the flow rate of cold air passing through the surface of the color wheel structure cover, that is, only if the rotation speed of the fan is kept relatively high, enough cold air flow rate and heat exchange of the surface of the color wheel structure cover can be ensured to dissipate heat. The disadvantage of this approach is that the fans cannot operate at low speeds, which can produce loud noise when operating at high speeds, and in addition, the efficiency is low by utilizing the heat exchange of the fans to dissipate heat.
Disclosure of Invention
The present invention is directed to a color wheel structure of a projector and a method thereof, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the color wheel structure of the projector comprises a color wheel structure cover, wherein a color wheel is arranged in the color wheel structure cover, a heat conduction telescopic device is fixedly arranged beside the color wheel, and the color wheel comprises fluorescent powder, a color wheel sheet substrate, a motor rotating shaft and a fixing device A; the heat conduction telescoping device comprises fixing device B, telescoping device, contact device, the periphery of colour wheel piece substrate sets up the phosphor powder, the centre fixed connection motor pivot of colour wheel piece substrate, colour wheel piece substrate just is located the both sides of motor pivot and is provided with fixing device A, still be provided with the colour wheel mark on the colour wheel piece substrate, the fixed contact device that is provided with in one side of telescoping device, the fixed fixing device B that is provided with of opposite side of telescoping device, fixing device B is fixed to be set up inside the colour wheel structural cover.
Preferably, the fixing device A is any one of two squares, four squares and a circular ring, and the fixing device A is symmetrically arranged at two sides of the motor rotating shaft. The motor connected with the motor rotating shaft is connected with a power supply system of the ultra-short focal projector through a wire.
Preferably, a laser emitting device is further arranged on the color wheel. The laser emission device is connected with a power supply system of the ultra-short focal projector through a wire.
Preferably, the fluorescent powder, the fixing device A and the color wheel mark are all arranged on the same side of the color wheel.
Preferably, the material of the contact device is graphene, and the contact device is of a rectangular sheet structure.
Preferably, the fixing device a and the fixing device B are both made of a heat-conducting metal material.
A heat dissipation scheme of a color wheel structure of a projector comprises the following steps:
step 1: the graphene material selected by the contact device stretches out and draws back after colliding with the color wheel;
step 2: the operating time of the heat-conducting device is defined as nT (n=100, 200, 300 … … …, T is the time required for one revolution of the color wheel);
step 3: after the whole machine works normally, the heat conducting device contacts with the color wheel fixing device after nT time, and then leaves the fixing device A quickly, the rotating speed of the color wheel is slowed down in the contact process of the heat conducting device and the color wheel fixing device A, the laser can be turned off in the process, the time for turning off the laser is less than the time for being recognized by human eyes (the minimum frequency of 24Hz can be recognized by the human eyes), and the adjustment of the normal working rotating speed of the color wheel is completed quickly in the time period, so that the normal working of the color wheel and the imaging color are not influenced.
Compared with the prior art, the invention has the beneficial effects that: this structure increases fixing device (heat conduction metal) on the substrate of colour wheel, but the scalable quick heat conduction device of colour wheel structure cover inner wall installation utilizes heat conduction device and fixing device A to contact the time with the heat conduction on the colour wheel to the colour wheel structure cover fast. After the quick heat conduction device leaves, the color wheel base material continuously radiates heat to the color wheel structural cover through radiation. Thereby realizing the effects of conduction heat dissipation and radiation heat dissipation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of a color wheel structure according to the present invention;
fig. 3 is a schematic diagram of a color wheel structure according to the present invention;
fig. 4 is a schematic diagram illustrating a color wheel structure according to the present invention;
fig. 5 is a schematic structural diagram of a heat conduction expansion device of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, a color wheel structure of a projector includes a color wheel structure cover, wherein a color wheel is arranged in the color wheel structure cover, a heat conduction expansion device is fixedly arranged beside the color wheel, and the color wheel includes fluorescent powder, a color wheel substrate, a motor rotating shaft and a fixing device A; the heat conduction telescoping device comprises fixing device B, telescoping device, contact device, the periphery of colour wheel piece substrate sets up the phosphor powder, the centre fixed connection motor pivot of colour wheel piece substrate, colour wheel piece substrate just is located the both sides of motor pivot and is provided with fixing device A, still be provided with the colour wheel mark on the colour wheel piece substrate, the fixed contact device that is provided with in one side of telescoping device, the fixed fixing device B that is provided with of opposite side of telescoping device, fixing device B is fixed to be set up inside the colour wheel structural cover.
Further, the fixing device A is any one of two squares, four squares and a circular ring, and the fixing device A is symmetrically arranged at two sides of the motor rotating shaft.
Further, a laser emitting device is further arranged on the color wheel.
Further, the fluorescent powder, the fixing device A and the color wheel mark are all arranged on the same side of the color wheel.
Further, the material of the contact device is graphene, and the contact device is of a rectangular sheet structure.
Further, the fixing device A and the fixing device B are made of heat-conducting metal materials.
A heat dissipation scheme of a color wheel structure of a projector comprises the following steps:
step 1: the graphene material selected by the contact device stretches out and draws back after colliding with the color wheel;
step 2: the operating time of the heat-conducting device is defined as nT (n=100, 200, 300 … … …, T is the time required for one revolution of the color wheel);
step 3: after the whole machine works normally, the heat conducting device contacts with the color wheel fixing device after nT time, and then leaves the fixing device A quickly, the rotating speed of the color wheel is slowed down in the contact process of the heat conducting device and the color wheel fixing device A, the laser can be turned off in the process, the time for turning off the laser is less than the time for being recognized by human eyes (the minimum frequency of 24Hz can be recognized by the human eyes), and the adjustment of the normal working rotating speed of the color wheel is completed quickly in the time period, so that the normal working of the color wheel and the imaging color are not influenced.
To sum up: the principle of the color wheel heat dissipation optimization scheme of the structure is that a fixing device (heat conducting metal) is added on a base material of the color wheel, a telescopic quick heat conducting device is arranged on the inner wall of a color wheel structure cover, and heat on the color wheel is quickly conducted to the color wheel structure cover when the heat conducting device is contacted with the fixing device A. After the quick heat conduction device leaves, the color wheel base material continuously radiates heat to the color wheel structural cover through radiation. Thereby realizing the effects of conduction heat dissipation and radiation heat dissipation.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The utility model provides a projector colour wheel structure, includes, colour wheel structure cover, its characterized in that: a color wheel is arranged in the color wheel structure cover, a heat conduction telescopic device is fixedly arranged beside the color wheel, and the color wheel comprises fluorescent powder, a color wheel sheet substrate, a motor rotating shaft and a fixing device A; the heat conduction telescoping device comprises fixing device B, telescoping device, contact device, the periphery of colour wheel piece substrate sets up the phosphor powder, the centre fixed connection motor pivot of colour wheel piece substrate, the colour wheel piece substrate is located the both sides of motor pivot and is provided with fixing device A, still be provided with the colour wheel mark on the colour wheel piece substrate, the fixed contact device that is provided with in one side of telescoping device, the fixed fixing device B that is provided with of opposite side of telescoping device, fixing device B is fixed to be set up at colour wheel structure cover inner wall, utilizes heat conduction telescoping device to lead to colour wheel structure cover with the heat conduction on the colour wheel fast when fixing device A contacts, and after the heat conduction telescoping device left, the colour wheel substrate continues to dispel the heat through the radiation to colour wheel structure cover.
2. A color wheel structure of a projector as defined in claim 1, wherein: the fixing device A is any one of two squares, four squares and a circular ring, and is symmetrically arranged on two sides of a motor rotating shaft.
3. A color wheel structure of a projector as defined in claim 1, wherein: and the color wheel is also provided with a laser emitting device.
4. A color wheel structure of a projector as defined in claim 1, wherein: the fluorescent powder, the fixing device A and the color wheel mark are all arranged on the same side of the color wheel.
5. A color wheel structure of a projector as defined in claim 1, wherein: the material of the contact device is graphene, and the contact device is of a rectangular sheet structure.
6. A color wheel structure of a projector as defined in claim 1, wherein: the fixing device A and the fixing device B are made of heat-conducting metal materials.
7. A method of dissipating heat from a color wheel structure of a projector according to any one of claims 1 to 6, comprising the steps of:
step 1: the graphene material selected by the contact device stretches out and draws back after colliding with the color wheel;
step 2: the working time of the heat conduction expansion device is defined as nT, n=100, 200, 300 and … … …, and T is the time required by the color wheel to rotate one circle;
step 3: after the whole machine works normally, the heat conduction expansion device contacts with the color wheel fixing device A after nT time, and leaves the fixing device A rapidly after contact, the rotating speed of the color wheel can be reduced in the contact process of the heat conduction expansion device and the color wheel fixing device A, the laser can be turned off in the process, the time for turning off the laser is less than the time identifiable by human eyes, and the adjustment of the normal working rotating speed of the color wheel is completed rapidly in the time period, so that the normal working of the color wheel and the imaging color are not influenced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177600.8A CN109709669B (en) | 2019-03-09 | 2019-03-09 | Color wheel structure of projector and heat dissipation scheme thereof |
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| CN201910177600.8A CN109709669B (en) | 2019-03-09 | 2019-03-09 | Color wheel structure of projector and heat dissipation scheme thereof |
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| CN109709669A CN109709669A (en) | 2019-05-03 |
| CN109709669B true CN109709669B (en) | 2023-07-21 |
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| CN206057778U (en) * | 2016-08-10 | 2017-03-29 | 深圳市绎立锐光科技开发有限公司 | A kind of colour wheel module, light source module and optical projection system |
| CN107505804A (en) * | 2016-06-14 | 2017-12-22 | 深圳市光峰光电技术有限公司 | Colour wheel heat abstractor and the projector equipment with the heat abstractor |
| CN108227352A (en) * | 2016-12-09 | 2018-06-29 | 深圳市光峰光电技术有限公司 | Color block component, light supply apparatus and projection device |
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Patent Citations (10)
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| CN1723414A (en) * | 2003-08-26 | 2006-01-18 | 精工爱普生株式会社 | Optical device and projector |
| CN102692798A (en) * | 2011-03-23 | 2012-09-26 | 卡西欧计算机株式会社 | Cooling unit and projector |
| KR101266432B1 (en) * | 2013-03-12 | 2013-05-22 | 주식회사 세기하이텍 | A wide heat spreader for cooling down a digital information display device |
| CN203643734U (en) * | 2013-12-11 | 2014-06-11 | 深圳市光峰光电技术有限公司 | Color wheel device |
| CN105290672A (en) * | 2015-10-12 | 2016-02-03 | 余储 | Plate fixing device for welding which is capable of water-cooling and is provided with LED lamps |
| CN205179610U (en) * | 2015-11-27 | 2016-04-20 | 深圳市绎立锐光科技开发有限公司 | Heat abstractor and applied this heat abstractor's projection equipment |
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| CN109709669A (en) | 2019-05-03 |
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Effective date of registration: 20190827 Address after: 100000 Floor 10, No. 11 Zhongcun Street, Haidian District, Beijing, 2002-03 Applicant after: XINSHIJIA TECHNOLOGY (BEIJING) Co.,Ltd. Address before: 362006 Quanzhou Economic and Technological Development Zone, Fujian Province, 69 Yushi Road, 2.5 Industrial Park, Building A, 3 floors Applicant before: QUANZHOU XINRUI JIGUANG TECHNOLOGY Co.,Ltd. |
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