WO2018090612A1 - 光源系统、投影仪及温度控制方法 - Google Patents

光源系统、投影仪及温度控制方法 Download PDF

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Publication number
WO2018090612A1
WO2018090612A1 PCT/CN2017/088628 CN2017088628W WO2018090612A1 WO 2018090612 A1 WO2018090612 A1 WO 2018090612A1 CN 2017088628 W CN2017088628 W CN 2017088628W WO 2018090612 A1 WO2018090612 A1 WO 2018090612A1
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Prior art keywords
processor
light source
temperature
projector
ambient temperature
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PCT/CN2017/088628
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English (en)
French (fr)
Inventor
吴正阳
李屹
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深圳市光峰光电技术有限公司
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Publication of WO2018090612A1 publication Critical patent/WO2018090612A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity

Definitions

  • the invention belongs to the technical field of light sources, and in particular relates to a light source system, a projector and a temperature control method.
  • projection technology is widely used in people's daily life.
  • the use of projection systems can be seen everywhere in meetings, teaching or entertainment venues.
  • small and medium-sized projectors for home and education usually adopt a fan cooling method to guide airflow through the air passage inside the projector, and take away a large amount of heat generated by the light source and the LCD screen, thereby protecting the projector from working normally. .
  • a fan cooling method to guide airflow through the air passage inside the projector, and take away a large amount of heat generated by the light source and the LCD screen, thereby protecting the projector from working normally.
  • the service life of the air filter is closely related to the environment in which it is used. After a long period of use, dust and tiny particles in the air adhere to the air filter, causing the heat dissipation capability of the machine to drop or even the air inlet to be blocked. In a dust-free air environment, the filter can be used for more than 2000 hours, while in harsh environments, the filter can be used for less than 100 hours.
  • the operating temperature control of the projector is an important condition for ensuring the life of the projector and normal operation.
  • the fan can only dissipate heat at the same speed to control the operating temperature of the projector, under the condition of high environmental cleanliness.
  • the filter's filter life is much longer than in the case of low cleanliness.
  • the present invention provides a light source system, a projector and a temperature control method, which can accurately adjust the air volume of the projector, prolong the life of the filter and improve the working performance.
  • the invention provides a light source system, comprising a fan, a light source, an air inlet channel and a filter screen clamped on the air inlet channel.
  • the light source system further includes an ambient temperature sensor for detecting an ambient temperature outside the light source system, an operating temperature sensor for detecting an operating temperature inside the light source system, and a processor And the processor receives the ambient temperature and the operating temperature and determines a comparison, and adjusts a rotation speed of the fan and/or an output power of the light source according to a result of determining the comparison.
  • the present invention also provides a projector comprising a body and the above-mentioned light source system provided by the present invention, the light source system is disposed in the body, the ambient temperature sensor is disposed outside the air inlet channel, and the working temperature sensor
  • the processor is disposed in the body, the processor is disposed in the body, and the ambient temperature sensor and the working temperature sensor are respectively connected to the processor.
  • the display screen further includes a display screen disposed on the surface of the body, the display screen being configured to display at least one of the ambient temperature sensor, the operating temperature sensor, the fan, the light source, and the processor Kind of working parameters.
  • the operating parameter includes at least one of the ambient temperature, the operating temperature, the rotational speed, the output power, and processing information of the processor.
  • the processing information includes warning information, where the warning information includes an operating temperature higher than a preset temperature and a filter jam.
  • a temperature control method for a projector characterized in that the method comprises the following steps:
  • the projector comprising an operating temperature sensor disposed in the body, an ambient temperature sensor, a processor, a fan, a light source, and a filter;
  • the working temperature T0 and the ambient temperature Th0 of the projector are respectively detected by the working temperature sensor and the ambient temperature sensor, and the working temperature T0 and the ambient temperature Th0 detected in real time are detected Transfer to the processor;
  • the temperature is judged, and the working warning temperature T1, the working protection temperature T2 and the environmental warning temperature Th1 are preset in the processor, and the comparison between the working temperature and the ambient temperature is compared by the processor according to a preset rule. result;
  • the action is performed, and the processor adjusts a rotation speed of the fan and an output power of the light source according to a preset rule according to the comparison result.
  • the temperature determination and the action execution step specifically include:
  • the processor controls the rotation speed of the fan to be lower than its current rotation speed
  • the processor determines in conjunction with the ambient temperature Th0:
  • the processor controls the output power of the light source to decrease below its current output power until T0 ⁇ T1;
  • the processor controls the speed of the fan to increase to be greater than its current speed until T0 ⁇ T1.
  • the projector further includes a display screen disposed on a surface of the body, and the ambient temperature sensor, the working temperature sensor, the fan, the light source, and the processor are respectively displayed by the display screen
  • the step of determining, by the processor, the ambient temperature Th0 further includes:
  • the processor sends a warning message that the ambient temperature is too high and is displayed through the display screen;
  • Th0 ⁇ Th1 the processor issues a warning message for cleaning the filter and displays it through the display.
  • T0>T1 and Th0 ⁇ Th1 if the processor controls the speed of the fan to increase to be greater than its current speed, the operating temperature T0 continues to rise and makes T0>T2, at which time the processor The operating parameters of the current state are saved and displayed through the display screen, and the projector is controlled to be forced to shut down.
  • the light source system, the projector and the temperature control method thereof of the present invention perform temperature detection by using an ambient temperature sensor and the working temperature sensor inside the projector, and perform temperature judgment by the processor and determine
  • the structure controls the rotation speed of the fan and the output power of the light source according to a preset rule, thereby accurately adjusting the inlet air volume, effectively controlling the use time of the filter net, and prolonging the service life thereof;
  • the degree of clogging is to remind the user to clean and ensure the working performance of the equipment.
  • FIG. 1 is a schematic structural view of a projector according to the present invention, including a light source system;
  • FIG. 2 is a flow chart of a method for controlling temperature of a projector according to the present invention.
  • the present invention provides a projector 100 including a body 1 , a fan 2 and a light source 3 disposed in the body 1 , and an air inlet passage 4 disposed through the body 1 .
  • a filter screen 5 of the air inlet duct 4 an ambient temperature sensor 6 disposed outside the air inlet duct 4, an operating temperature sensor 7 disposed in the body 1, a processor 8 disposed in the body 1, and a processor 8
  • the ambient temperature sensor 6 and the operating temperature sensor 7 are each connected to the processor 8. It should be noted that the ambient temperature sensor 6 and the working temperature sensor 7 respectively connected to the processor 8 may be a physical electrical connection or a wireless communication connection.
  • the fan 2, the light source 3, the air inlet channel 4, the filter screen 5, the ambient temperature sensor 6, the operating temperature sensor 7, and the processor 8 constitute a light source system of the present invention.
  • the ambient temperature sensor is configured to detect an ambient temperature outside the light source system
  • the operating temperature sensor is configured to detect an operating temperature inside the light source system
  • the processor receives the ambient temperature and The operating temperature is determined and the comparison is judged, and the rotational speed of the fan and/or the output power of the light source are adjusted according to the result of the judgment comparison.
  • the fan 2 is configured to perform air cooling and cooling for the projector 100 to protect the projector 100 from working normally.
  • the light source 3 is used for projection imaging, which is the main heat generating component.
  • the air inlet passage 4 is used to provide an air flow passage for the fan 2.
  • the filter screen 5 is disposed in the air inlet passage 4 for ensuring that the image quality of the light source 3 is affected without introducing dust when introducing air.
  • the ambient temperature sensor 6 is used to detect an ambient temperature outside the body 1.
  • the operating temperature sensor 7 is used to detect an operating temperature inside the body 1.
  • the processor 8 presets an environmental alert temperature and a work alert temperature, etc., the processor 8 receives the ambient temperature and the working temperature, and compares and judges with a preset environmental alert temperature and a work alert temperature, according to The result of the comparison judgment adjusts the speed of the fan 2 and the output power of the light source 3 to adjust the heat balance of the projector 100, so that the projector 100 processes the normal working state.
  • the display screen 9 is electrically connected to the ambient temperature sensor 6, the operating temperature sensor 7, the fan 2, the light source 3, and the processor 8, respectively, for displaying operating parameters of the projector 100.
  • the operating parameters include the ambient temperature, the operating temperature, the rotational speed, the output power, and processing information of the processor 8.
  • the content displayed by the display screen 9 is not limited to the above, and more information can be displayed, as this is feasible, and the principle is the same.
  • the processing information includes, but is not limited to, alerting the user that the operating temperature is too high and/or alerting the user to clear the warning information of the filter 5.
  • alerting the user that the operating temperature is too high For example, “the operating temperature is higher than the preset temperature”, “the filter is clogged”, and the like.
  • the projector 100 of the present invention collectively detects the ambient temperature and the operating temperature outside and inside the projector 100 by the ambient temperature sensor 6 and the operating temperature sensor 7, using the processor 8 according to the The ambient temperature and the operating temperature are combined and determined according to a preset rule and the temperature state of the projector 100 is controlled to ensure that the projector 100 operates normally, and the fan 2 of the projector 100 can be made according to the environmental state.
  • the speed adjustment is performed to increase the service life of the screen 5 and save the use cost.
  • the present invention further provides a temperature control method for a light source system or a projector, which is described based on the projector 100 provided by the present invention, and the method includes the following steps:
  • a projector 100 is provided.
  • the projector 100 includes an operating temperature sensor 7, an ambient temperature sensor 6, a processor 8, a fan 2, a light source 3, and a filter 5 disposed in the body 1.
  • Step S2 temperature detection, detecting the operating temperature T0 and the ambient temperature Th0 of the projector 100 by the operating temperature sensor 7 and the ambient temperature sensor 6, respectively.
  • the operating temperature T0 and the ambient temperature Th0 detected in real time are transmitted to the processor 8.
  • step S3 the temperature is determined, the working alert temperature T1, the working protection temperature T2 and the environmental alert temperature Th1 are preset in the processor 8, and the working temperature and the ambient temperature are performed by the processor 8 according to a preset rule.
  • the comparison result is compared, and the obtained comparison result is T0 ⁇ T1; T0> T1 and Th0 ⁇ Th1; T0> T1 and Th0 ⁇ Th1.
  • the preset rule is specifically determined by the processor 8 in real time.
  • it can also be set as a method of interval judgment, such as judging once in ten minutes, etc., which is feasible.
  • Step S4 the action is executed, the processor 8 adjusts the speed of the rotation speed of the fan 2 and the output power of the light source 3 according to a preset rule according to the comparison result, so that T0 ⁇ T1, thereby controlling the The projector 100 is processed within a normal operating temperature range to ensure its operational performance.
  • the display screen 9 is electrically connected to the ambient temperature sensor 6, the working temperature sensor 7, the fan 2, the light source 3, and the processor 8, respectively, for displaying the projection.
  • the operating parameters of the instrument 100 include the ambient temperature, the operating temperature, the rotational speed, the output power, and processing information of the processor.
  • the operating parameters include, but are not limited to, the above mentioned content, which are all possible.
  • the temperature determination and the action execution step include the following states:
  • State 1 When the operating temperature T0 ⁇ the working alert temperature T1, the processor 100 controls the rotational speed of the fan to decrease below its current rotational speed. Thereby, the projector 100 can be saved while being operated normally, and the amount of intake air is reduced such that the amount of dust entering is reduced, and the service life of the screen protecting the projector 100 is increased.
  • the display screen 9 at this time displays normal operating status information.
  • the processor controls the output power of the light source to decrease below its current output power until T0 ⁇ T1.
  • the processor 8 is shown to issue an alert message that the ambient temperature is too high and is displayed through the display screen 9, such as "the operating temperature is above the preset temperature.”
  • the state 3 is further included: when T0>T1 and Th0 ⁇ Th1, if the processor 8 controls the rotation speed of the fan 2 to increase to be greater than its current rotation speed, the operating temperature T0 continues to rise or even causes the operating temperature. T0> working protection temperature T2, at which time the processor 8 saves the operating parameters of the current state and displays through the display screen 9, and simultaneously controls the projector 100 to forcibly shut down. For example, it is displayed as "high temperature fault".
  • the temperature control method of the projector of the present invention detects the ambient temperature and the operating temperature outside and inside the projector 100 by the ambient temperature sensor 6 and the operating temperature sensor 7, respectively, by using the processor 8 performing a combination determination according to the ambient temperature and the operating temperature according to a preset rule and controlling a temperature state of the projector 100 to ensure that the projector 100 operates normally while enabling the fan 2 of the projector 100 to
  • the speed adjustment is performed according to the environmental state, and it is not necessary to protect the high speed rotation for a long time, so that the amount of dust filtering of the screen 5 in the same time is reduced, thereby improving the service life of the screen 5 and saving the use cost.
  • the screen 5 can be used for more than 2000 hours, and in a harsh environment, the screen is used for less than 100 hours. Since the air cleanliness and the working state of the screen 5 cannot be determined in advance, the life of the screen 5 can generally be set conservatively according to the amount of dust suction of the rated speed of the fan 2, resulting in a large waste.
  • the projector of the present invention and the temperature control method thereof, that is, the temperature is precisely controlled, so that the fan 2 does not always need to operate at a rated speed, and the service life of the screen 5 is prolonged.
  • the projector and the temperature control method thereof of the present invention perform temperature detection by using an ambient temperature sensor and the working temperature sensor inside the projector, and perform temperature determination by the processor and pre-determine the structure.
  • the rule is to control the rotation speed of the fan and the output power of the light source, so as to accurately adjust the inlet air volume, effectively control the usage time of the filter net, prolong its service life, and determine the degree of clogging of the filter screen. To remind the user to clean and guarantee the working performance of the projector.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

一种光源系统、投影仪（100）及其温度控制方法，该光源系统包括风扇（2）、光源（3）、进风通道（4）、卡设于进风通道（4）的滤网（5）、环境温度传感器（6）、工作温度传感器（7）及处理器（8），环境温度传感器（6）用于检测光源系统外部的环境温度，工作温度传感器（7）用于检测光源系统内部的工作温度，处理器（8）接收环境温度和工作温度并判断比较，根据判断比较的结果调节风扇（2）的转速和/或光源（3）的输出功率。该光源系统可精确调节投影仪（100）的进风风量，延长滤网（5）寿命，判断滤网（5）的堵塞程度，提高投影仪（100）的工作性能。

Description

光源系统、投影仪及温度控制方法 技术领域
本发明属于光源技术领域，具体涉及一种光源系统、投影仪及温度控制方法。
 背景技术
目前，投影技术在人们日常生活的得到普遍的应用。无论在会议、教学或是娱乐场所都可以随处可见投影系统的使用。
相关技术中，家庭、教育用中小型投影仪通常采用风扇空冷的散热方式，引导气流经过投影仪内部的气道，带走由光源及LCD屏工作时产生的大量热量，从而保护投影仪正常作。为保证引入空气时不带入灰尘影响成像质量，需要在进气口安装空气滤网。
空气滤网的使用寿命和使用环境密切相关。长时间使用后，空气中的灰尘及微小颗粒物附着在空气滤网上，导致机器散热能力下降甚至进气口堵塞，此时需要更换。在无尘的空气环境下，滤网可以使用2000小时以上，而较恶劣的环境，滤网使用时间不到100小时。
投影仪的工作温度控制为保证投影仪的使用寿命和正常工作的重要条件，而相关技术中，风扇仅能以同样转速进行散热以控制投影仪的工作温度，在环境洁净度较高的条件下，投影仪的滤网使用寿命远大于在洁净度不高的条件下。
 技术问题
然而，由于投影仪通常只能保守地设定滤网寿命和更换时间，造成较大的浪费。
因此，实有必要提供一种新的光源系统、投影仪及温度控制方法以解决上述问题。
 技术解决方案
针对以上现有技术的不足，本发明提出一种光源系统、投影仪及温度控制方法，可精确调节投影仪进风风量，延长滤网寿命和提高工作性能。
本发明提供了一种光源系统，包括风扇、光源、进风通道和卡设于所述进风通道的滤网。所述光源系统还包括环境温度传感器、工作温度传感器及处理器，所述环境温度传感器用于检测所述光源系统外部的环境温度，所述工作温度传感器用于检测所述光源系统内部的工作温度，所述处理器接收所述环境温度和所述工作温度并判断比较，根据判断比较的结果调节所述风扇的转速和/或所述光源的输出功率。
本发明还提供一种投影仪，包括机体和本发明提供的上述光源系统，所述光源系统设置于所述机体内，所述环境温度传感器设置于所述进风通道外，所述工作温度传感器设置于所述机体内，所述处理器设置于所述机体内，所述环境温度传感器及所述工作温度传感器分别与所述处理器连接。
优选的，还包括设置于所述机体表面的显示屏，所述显示屏用于显示所述环境温度传感器、所述工作温度传感器、所述风扇、所述光源及所述处理器中的至少一种的工作参数。
优选的，所述工作参数包括所述环境温度、所述工作温度、所述转速、所述输出功率及所述处理器的处理信息的至少一种。
优选的，所述处理信息包括警示信息，所述警示信息包括工作温度高于预设温度和滤网堵塞。
一种投影仪的温度控制方法，其特征在于，该方法包括如下步骤：
提供投影仪，所述投影仪包括设置于机体内的工作温度传感器、环境温度传感器、处理器、风扇、光源及滤网；
温度检测，通过所述工作温度传感器和所述环境温度传感器分别检测所述投影仪的所述工作温度T0和所述环境温度Th0，并将实时检测的所述工作温度T0和所述环境温度Th0传送至所处理器；
温度判断，在所述处理器内预先设置工作警戒温度T1、工作保护温度T2及环境警戒温度Th1，通过所述处理器按预设规则进行所述工作温度和所述环境温度的判断比较得到比较结果；
动作执行，所述处理器根据所述比较结果按预设规则调节所述风扇的转速和所述光源的输出功率。
优选的，所述温度判断和所述动作执行步骤具体包括：
当T0≤T1时，所述处理器控制所述风扇的转速降低至低于其当前转速；
当T0>T1时，所述处理器结合所述环境温度Th0判断：
若Th0≥Th1，所述处理器控制所述光源的输出功率降低至低于其当前输出功率，直至T0≤T1；
若Th0<Th1，所述处理器控制风扇的转速增加至大于其当前转速，直至T0≤T1。
优选的，所述投影仪还包括设置于所述机体表面的显示屏，通过所述显示屏分别显示所述环境温度传感器、所述工作温度传感器、所述风扇、所述光源及所述处理器中至少一种的的工作参数；所述工作参数包括所述环境温度、所述工作温度、所述转速、所述输出功率及所述处理器的处理信息中的至少一种。
优选的，当T0>T1时，所述处理器结合所述环境温度Th0判断的步骤还包括：
若Th0≥Th1，所示处理器发出环境温度过高的警示信息并通过所述显示屏显示；
若Th0<Th1，所述处理器发出清理滤网的警示信息并通过所述显示屏显示。
优选的，当T0>T1且Th0<Th1时，若所述处理器控制风扇的转速增加至大于其当前转速后，所述工作温度T0仍继续上升并使得T0>T2，此时所述处理器保存当前状态的所述工作参数并通过所述显示屏显示，并控制所述投影仪强制关机。
 有益效果
与相关技术相比，本发明的光源系统、投影仪及其温度控制方法利用所述投影仪内部的环境温度传感器和所述工作温度传感器进行温度检测，通过所述处理器进行温度判断并将判断结构按预设规则控制所述风扇的转速和所述光源的输出功率，从而达到精确调节进风风量，有效的控制所述滤网的使用时间，延长其使用寿命；同时可判断所述滤网的堵塞程度，以提醒用户清洗，保障设备的工作性能。
 附图说明
下面结合附图详细说明本发明。通过结合以下附图所作的详细描述，本发明的上述或其他方面的内容将变得更清楚和更容易理解。附图中：
图1为本发明投影仪结构示意图，其中包括光源系统；
图2为本发明投影仪温度控制方法的流程框图。
 本发明的最佳实施方式
下面结合附图详细说明本发明的具体实施方式。
在此记载的具体实施方式/实施例为本发明的特定的具体实施方式，用于说明本发明的构思，均是解释性和示例性的，不应解释为对本发明实施方式及本发明范围的限制。除在此记载的实施例外，本领域技术人员还能够基于本申请权利要求书和说明书所公开的内容采用显而易见的其它技术方案，这些技术方案包括采用对在此记载的实施例的做出任何显而易见的替换和修改的技术方案，都在本发明的保护范围之内。
请参阅图1，本发明提供了一种投影仪100，包括机体1、设置于所述机体1内的风扇2和光源3、贯穿所述机体1设置的进风通道4、卡设于所述进风通道4的滤网5、设置于所述进风通道4外的环境温度传感器6、设置于所述机体1内的工作温度传感器7、设置于所述机体1的处理器8以及设置于所述机体1表面的显示屏9。所述环境温度传感器6和所述工作温度传感器7分别与所述处理器8连接。需要说明的是，所述环境温度传感器6和所述工作温度传感器7分别与所述处理器8连接可以为物理电连接，也可以为无线通讯连接。
其中，所述风扇2、所述光源3、所述进风通道4、所述滤网5、所述环境温度传感器6、所述工作温度传感器7及所述处理器8构成本发明的光源系统（未标号），所述环境温度传感器用于检测所述光源系统外部的环境温度，所述工作温度传感器用于检测所述光源系统内部的工作温度，所述处理器接收所述环境温度和所述工作温度并判断比较，根据判断比较的结果调节所述风扇的转速和/或所述光源的输出功率。
所述风扇2用于为所述投影仪100进行空冷散热，保护所述投影仪100正常工作。
所述光源3用于投影成像，其为主要的发热部件。
所述进风通道4用于为所述风扇2提供气流流通通道。
所述滤网5卡设于所述进风通道4，用于保证引空气时不带入灰尘而影响所述光源3的成像质量。
所述环境温度传感器6用于检测所述机体1外部的环境温度。
所述工作温度传感器7用于检测所述机体1内部的工作温度。
所述处理器8内预设环境警戒温度和工作警戒温度等，所述处理器8接收所述环境温度和所述工作温度，并与预设的环境警戒温度和工作警戒温度进行比较判断，根据比较判断的结果调节所述风扇2的转速快慢和所述光源3的输出功率大小，以调节所述投影仪100散热平衡，使所述投影仪100处理正常工作状态。
所述显示屏9分别与所述环境温度传感器6、所述工作温度传感器7、所述风扇2、所述光源3及所述处理器8电连接，用于显示所述投影仪100的工作参数。具体的，所述工作参数包括所述环境温度、所述工作温度、所述转速、所述输出功率及所述处理器8的处理信息。
当然，所述显示屏9显示的内容并非限于上述，还可以显示更多信息，如这都是可行的，其原理都一样。
更优的，所述处理信息包括但不限于：提醒用户所述工作温度过高及/或提醒用户清理所述滤网5的警示信息。比如“工作温度高于预设温度”、“滤网堵塞”等。
本发明的投影仪100，通过所述环境温度传感器6和所述工作温度传感器7共同检测所述投影仪100外部和内部的所述环境温度和所述工作温度，利用所述处理器8根据所述环境温度及工作温度按预设规则进行结合判断并控制所述投影仪100的温度状态，以保证所述投影仪100正常工作，同时使所述投影仪100的所述风扇2能根据环境状态进行转速调整，从而使提高所述滤网5的使用寿命，节约使用成本。
请结合参阅图2，本发明还提供了一种光源系统或投影仪的温度控制方法，以本发明提供的投影仪100为基础进行说明，该方法包括如下步骤：
步骤S1、提供投影仪100，所述投影仪100包括设置于机体1内的工作温度传感器7、环境温度传感器6、处理器8、风扇2、光源3及滤网5。
步骤S2、温度检测，通过所述工作温度传感器7和所述环境温度传感器6分别检测所述投影仪100的所述工作温度T0和所述环境温度Th0。并将实时检测的所述工作温度T0和所述环境温度Th0传送至所处理器8。
步骤S3、温度判断，在所述处理器8内预先设置工作警戒温度T1、工作保护温度T2及环境警戒温度Th1，通过所述处理器8按预设规则进行所述工作温度和所述环境温度的判断比较得到比较结果，如得到的比较结果为T0≤T1；T0>T1且Th0≥Th1；T0>T1且Th0<Th1等。
本步骤中，所述预设规则具体为所述处理器8实时判断。当然也可以设置为间隔性判断等方式，比如十分钟判断一次等，这都是可行的。
步骤S4、动作执行，所述处理器8根据所述比较结果按预设规则调节所述风扇2的转速的快慢和所述光源3的输出功率的大小，以使得T0≤T1，从而控制所述投影仪100的处理正常工作温度范围内，保证其工作性能。
本实施方式中，所述显示屏9分别与所述环境温度传感器6、所述工作温度传感器7、所述风扇2、所述光源3及所述处理器8电连接，用于显示所述投影仪100的工作参数。所述工作参数包括所述环境温度、所述工作温度、所述转速、所述输出功率及所述处理器的处理信息。所述工作参数包括但不限于上述提及内容，这都是可行的。
具体的，所述温度判断和所述动作执行步骤中包括如下状态：
状态1、当工作温度T0≤工作警戒温度T1时，所述处理器100控制所述风扇的转速降低至低于其当前转速。从而可使所述投影仪100正常工作的同时节能，且所述进风量减小使得所述进尘量减小，增加保护所述投影仪100的滤网的使用寿命。在状态1的情况下，此时所述显示屏9显示正常工作状态信息。
状态2、当工作温度T0>工作警戒温度T1时，所述处理器8结合所述环境温度Th0进行分析判断：
状态2.1、若环境温度Th0≥环境警戒温度Th1，所述处理器控制所述光源的输出功率降低至低于其当前输出功率，直至T0≤T1。在状态2.1的情况下，所示处理器8发出环境温度过高的警示信息并通过所述显示屏9显示，比如显示为“工作温度高于预设温度”。
状态2.2、若Th0<Th1，所述处理器8控制风扇2的转速增加至大于其当前转速，直至T0≤T1。在状态2.2的情况下，所述处理器8发出清理滤网的警示信息并通过所述显示屏9显示，比如显示为“滤网堵塞”。
实际运用中，还包括状态3：当T0>T1且Th0<Th1时，若所述处理器8控制风扇2的转速增加至大于其当前转速后，所述工作温度T0仍继续上升甚至使得工作温度T0>工作保护温度T2，此时所述处理器8保存当前状态的所述工作参数并通过所述显示屏9显示，且同时控制所述投影仪100强制关机。比如显示为“高温故障”。
本发明的投影仪的温度控制方法，通过所述环境温度传感器6和所述工作温度传感器7分别检测所述投影仪100外部和内部的所述环境温度和所述工作温度，利用所述处理器8根据所述环境温度及工作温度按预设规则进行结合判断并控制所述投影仪100的温度状态，以保证所述投影仪100正常工作，同时使所述投影仪100的所述风扇2能根据环境状态进行转速调整，而无需要长时间保护高速度转动，进而使得所述滤网5在同样时间内的滤尘量减小，从而使提高所述滤网5的使用寿命，节约使用成本。
在无尘的空气环境下，所述滤网5可以使用2000小时以上，而较恶劣的环境，所述滤网使用时间不到100小时。由于无法预先判断空气洁净度和所述滤网5工作状态，通常只能按所述风扇2额定转速的吸尘量保守地设定所述滤网5的寿命，造成较大的浪费。而本发明的投影仪及其温度控制方法，即精确控制了温度，从而使所述风扇2并非一直需要额定转速工作，延长所述滤网5的使用寿命。
与相关技术相比，本发明的投影仪及其温度控制方法利用所述投影仪内部的环境温度传感器和所述工作温度传感器进行温度检测，通过所述处理器进行温度判断并将判断结构按预设规则控制所述风扇的转速和所述光源的输出功率，从而达到精确调节进风风量，有效的控制所述滤网的使用时间，延长其使用寿命；同时可判断所述滤网的堵塞程度，以提醒用户清洗，保障的所述投影仪的工作性能。
需要说明的是，以上参照附图所描述的各个实施例仅用以说明本发明而非限制本发明的范围，本领域的普通技术人员应当理解，在不脱离本发明的精神和范围的前提下对本发明进行的修改或者等同替换，均应涵盖在本发明的范围之内。此外，除上下文另有所指外，以单数形式出现的词包括复数形式，反之亦然。另外，除非特别说明，那么任何实施例的全部或一部分可结合任何其它实施例的全部或一部分来使用。

Claims (10)

1、一种光源系统，包括风扇、光源、进风通道和卡设于所述进风通道的滤网，其特征在于，所述光源系统还包括环境温度传感器、工作温度传感器及处理器，所述环境温度传感器用于检测所述光源系统外部的环境温度，所述工作温度传感器用于检测所述光源系统内部的工作温度，所述处理器接收所述环境温度和所述工作温度并判断比较，根据判断比较的结果调节所述风扇的转速和/或所述光源的输出功率。
2、一种投影仪，包括机体，其特征在于，所述投影仪还包括如权利要求1所述的光源系统，所述光源系统设置于所述机体内，所述环境温度传感器设置于所述进风通道外，所述工作温度传感器设置于所述机体内，所述处理器设置于所述机体内，所述环境温度传感器及所述工作温度传感器分别与所述处理器连接。
3、根据权利要求2所述的投影仪，其特征在于，还包括设置于所述机体表面的显示屏，所述显示屏用于显示所述环境温度传感器、所述工作温度传感器、所述风扇、所述光源及所述处理器中的至少一种的工作参数。
4、根据权利要求3所述的投影仪，其特征在于，所述工作参数包括所述环境温度、所述工作温度、所述转速、所述输出功率及所述处理器的处理信息的至少一种。
5、根据权利要求4所述的投影仪，其特征在于，所述处理信息包括警示信息，所述警示信息包括工作温度高于预设温度和滤网堵塞。
6、一种投影仪的温度控制方法，其特征在于，该方法包括如下步骤：
提供投影仪，所述投影仪包括设置于机体内的工作温度传感器、环境温度传感器、处理器、风扇、光源及滤网；
温度检测，通过所述工作温度传感器和所述环境温度传感器分别检测所述投影仪的所述工作温度T0和所述环境温度Th0，并将实时检测的所述工作温度T0和所述环境温度Th0传送至所处理器；
温度判断，在所述处理器内预先设置工作警戒温度T1、工作保护温度T2及环境警戒温度Th1，通过所述处理器按预设规则进行所述工作温度和所述环境温度的判断比较得到比较结果；
动作执行，所述处理器根据所述比较结果按预设规则调节所述风扇的转速和所述光源的输出功率。
7、根据权利要求6所述的投影仪的温度控制方法，其特征在于，所述温度判断和所述动作执行步骤具体包括：
当T0≤T1时，所述处理器控制所述风扇的转速降低至低于其当前转速；
当T0>T1时，所述处理器结合所述环境温度Th0判断：
若Th0≥Th1，所述处理器控制所述光源的输出功率降低至低于其当前输出功率，直至T0≤T1；
若Th0<Th1，所述处理器控制风扇的转速增加至大于其当前转速，直至T0≤T1。
8、根据权利要求7所述的投影仪的温度控制方法，其特征在于，所述投影仪还包括设置于所述机体表面的显示屏，通过所述显示屏分别显示所述环境温度传感器、所述工作温度传感器、所述风扇、所述光源及所述处理器中至少一种的的工作参数；所述工作参数包括所述环境温度、所述工作温度、所述转速、所述输出功率及所述处理器的处理信息中的至少一种。
9、根据权利要求8所述的投影仪的温度控制方法，其特征在于，当T0>T1时，所述处理器结合所述环境温度Th0判断的步骤还包括：
若Th0≥Th1，所示处理器发出环境温度过高的警示信息并通过所述显示屏显示；
若Th0<Th1，所述处理器发出清理滤网的警示信息并通过所述显示屏显示。
10、根据权利要求9所述的投影仪的温度控制方法，其特征在于，当T0>T1且Th0<Th1时，若所述处理器控制风扇的转速增加至大于其当前转速后，所述工作温度T0仍继续上升并使得T0>T2，此时所述处理器保存当前状态的所述工作参数并通过所述显示屏显示，并控制所述投影仪强制关机。
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