JP2007003638A - Projection type video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projection type video display device capable of efficiently cooling a light source lamp and excellent in handleability. <P>SOLUTION: The projection type video display device such as a projector 100 includes: a timer for measuring cooling time when the light source lamp 121 is cooled by driving and rotating a cooling fan 13 under the control of a CPU until power supply from a power source part is interrupted after turning off the light source lamp 121, based on input of an instruction to shift to standby; the CPU for performing processing to calculate the average cooling time of the light source lamp until then, based on the cooling time measured by the timer whenever the light source lamp is turned off; a temperature sensor for detecting the temperature of the light source lamp; a timer for measuring the operating time of the light source lamp; and the CPU for adjusting the rotating speed of the cooling fan, based on rotating speed adjusting amount related to the average cooling time of the light source lamp, the temperature of the light source lamp and the operating time of the light source lamp and performing processing to drive and rotate the cooling fan according to the rotating speed and the average cooling time. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a projection-type image display apparatus that cools a light source lamp by rotationally driving a cooling fan.

  Conventionally, a projection-type video display device such as a projector is equipped with a light source lamp for forming a predetermined optical image based on image data.

In such a projection type image display device, since the light source lamp generates heat when used, the light source lamp is cooled by the rotation of the cooling fan. Specifically, for example, a projection-type image display device configured to identify a light source lamp to be used and change the driving power and the rotation speed of a cooling fan according to the identified light source lamp has been developed. (For example, refer to Patent Document 1). In addition, a projection-type image display device configured to allow a user to select a desired cooling condition of the light source lamp has been developed (see, for example, Patent Document 2).
JP 2001-332394 A JP 2004-21103 A

  By the way, the cooling of the light source lamp is performed, for example, by rotating the cooling fan at a predetermined rotational speed at least for a predetermined time, for example, 1 minute after the light source lamp is turned off. Depending on the state of use of the apparatus, the cooling time of the light source lamp may not be secured for a certain time, and the power may be turned off halfway. In this case, since the light source lamp cannot be sufficiently cooled, there is a problem that the life of the light source lamp is shortened.

  In such a case, since the cooling of the light source lamp is not sufficient, even if a predetermined operation for turning on the light source lamp is performed when the projection display apparatus is subsequently used, the light source lamp is cooled. In some cases, the light source lamp cannot be turned on until the cooling fan has been rotated for a predetermined time.

  As described above, when it is not possible to secure a predetermined cooling time, not only the light source lamp can be sufficiently cooled, but also the convenience of the subsequent projection type video display device is deteriorated. There is a problem such as.

  In order to rapidly cool the light source lamp, it is conceivable to increase the rotation speed of the cooling fan. However, there is a problem that noise increases as the rotation speed of the cooling fan increases. Therefore, it is necessary to consider efficient cooling of the light source lamp in consideration of such problems.

  Therefore, an object of the present invention is to provide a projection type image display device that can efficiently cool a light source lamp and is excellent in usability.

In order to solve the above-mentioned problem, the invention described in claim 1
A light source lamp for forming an optical image, a cooling fan for cooling the light source lamp, fan drive control means for rotating the cooling fan, and power supply for supplying power to the fan drive control means A projection-type image display device comprising means,
A standby mode instruction means for outputting a standby transition instruction for turning off the light source lamp and causing the projection display apparatus to transition to a standby mode;
Based on the input of the standby shift instruction output from the standby mode instruction means, the fan drive control means after the light source lamp is turned off until the power supply from the power supply means to the fan drive control means is cut off Cooling time measuring means for measuring the cooling time during which the cooling fan is driven to rotate at a predetermined rotational speed and the light source lamp is cooled,
Average time calculating means for calculating an average cooling time of the light source lamp so far based on the cooling time counted by the cooling time measuring means each time the light source lamp is turned off;
An average cooling time adjustment information recording means for recording the average cooling time of the light source lamp and the average cooling time adjustment information relating to the adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Temperature detecting means for detecting the temperature of the light source lamp;
Temperature adjustment information recording means for associating and recording the temperature of the light source lamp and temperature adjustment information related to adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Usage time measuring means for measuring the usage time of the light source lamp;
Use time adjustment information recording means for associating and recording the use time of the light source lamp and the use time adjustment information relating to the adjustment of the rotation speed of the cooling fan rotated by the fan drive control means;
Average cooling time adjustment information acquisition means for acquiring the average cooling time adjustment information corresponding to the average cooling time calculated by the average time calculation means from the average cooling time adjustment information recording means;
Temperature adjustment information acquisition means for acquiring the temperature adjustment information corresponding to the temperature of the light source lamp detected by the temperature detection means from the temperature adjustment information recording means;
Use time adjustment information acquisition means for acquiring from the use time adjustment information recording means the use time adjustment information corresponding to the use time of the light source lamp timed by the use time counting means,
The fan drive control means includes the average cooling time adjustment information acquired by the average cooling time adjustment information acquisition means, the temperature adjustment information acquired by the temperature adjustment information acquisition means, and the use time adjustment information acquisition means. The rotation speed of the cooling fan is adjusted based on the acquired usage time adjustment information, and the cooling fan is rotated in accordance with the adjusted rotation speed and the average cooling time calculated by the average time calculation means. It is characterized by being driven.

The invention described in claim 2
A light source lamp for forming an optical image, a cooling fan for cooling the light source lamp, fan drive control means for rotating the cooling fan, and power supply for supplying power to the fan drive control means A projection-type image display device comprising means,
A standby mode instruction means for outputting a standby transition instruction for turning off the light source lamp and causing the projection display apparatus to transition to a standby mode;
Based on the input of the standby shift instruction output from the standby mode instruction means, the fan drive control means after the light source lamp is turned off until the power supply from the power supply means to the fan drive control means is cut off Cooling time counting means for timing the cooling time during which the cooling fan is rotated at a predetermined rotational speed to cool the light source lamp,
Average time calculating means for calculating an average cooling time of the light source lamp so far based on the cooling time counted by the cooling time measuring means each time the light source lamp is turned off;
An average cooling time adjustment information recording means for recording the average cooling time of the light source lamp and the average cooling time adjustment information relating to the adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Average cooling time adjustment information acquisition means for acquiring the average cooling time adjustment information corresponding to the average cooling time calculated by the average time calculation means from the average cooling time adjustment information recording means,
The fan drive control unit adjusts the rotation speed of the cooling fan based on the average cooling time adjustment information acquired by the average cooling time adjustment information acquisition unit, and the adjusted rotation speed and the average time The cooling fan is driven to rotate according to the average cooling time calculated by the calculating means.

The invention according to claim 3 is the projection type video display device according to claim 2,
Temperature detecting means for detecting the temperature of the light source lamp;
Temperature adjustment information recording means for associating and recording the temperature of the light source lamp and temperature adjustment information related to adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Temperature adjustment information acquisition means for acquiring the temperature adjustment information corresponding to the temperature of the light source lamp detected by the temperature detection means from the temperature adjustment information recording means,
The fan drive control means further adjusts the rotational speed of the cooling fan based on the temperature adjustment information acquired by the temperature adjustment information acquisition means.

According to a fourth aspect of the present invention, in the projection-type image display device according to the second aspect,
Usage time measuring means for measuring the usage time of the light source lamp;
Use time adjustment information recording means for associating and recording the use time of the light source lamp and the use time adjustment information relating to the adjustment of the rotation speed of the cooling fan rotated by the fan drive control means;
Use time adjustment information acquisition means for acquiring from the use time adjustment information recording means the use time adjustment information corresponding to the use time of the light source lamp timed by the use time counting means,
The fan drive control means further adjusts the rotation speed of the cooling fan based on the use time adjustment information acquired by the use time adjustment information acquisition means.

The invention according to claim 5 is the projection type image display device according to claim 2,
Temperature detecting means for detecting the temperature of the light source lamp;
Temperature adjustment information recording means for associating and recording the temperature of the light source lamp and temperature adjustment information related to adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Usage time measuring means for measuring the usage time of the light source lamp;
Use time adjustment information recording means for associating and recording the use time of the light source lamp and the use time adjustment information relating to the adjustment of the rotation speed of the cooling fan rotated by the fan drive control means;
Temperature adjustment information acquisition means for acquiring the temperature adjustment information corresponding to the temperature of the light source lamp detected by the temperature detection means from the temperature adjustment information recording means;
Use time adjustment information acquisition means for acquiring from the use time adjustment information recording means the use time adjustment information corresponding to the use time of the light source lamp timed by the use time counting means,
The fan drive control unit is further configured to control the cooling fan based on the temperature adjustment information acquired by the temperature adjustment information acquisition unit and the use time adjustment information acquired by the use time adjustment information acquisition unit. It is characterized by adjusting the rotation speed.

According to the first aspect of the present invention, after the light source lamp is turned off after the transition to the standby mode,
Before the power supply from the power supply means to the fan drive control means is cut off, the fan drive control means measures the cooling time during which the cooling fan is driven to rotate at a predetermined rotational speed and cools the light source lamp. Based on the cooling time counted each time the lamp is turned off, the average cooling time of the light source lamp so far is calculated, and further, the average cooling related to the adjustment of the rotation speed of the cooling fan corresponding to the average cooling time Time adjustment information is acquired from the average cooling time adjustment information recording means, temperature adjustment information related to adjustment of the rotation speed of the cooling fan corresponding to the temperature of the light source lamp is acquired from the temperature adjustment information recording means, and Usage time adjustment information relating to the adjustment of the rotation speed of the cooling fan corresponding to the usage time of the light source lamp is acquired from the usage time adjustment information recording means. The rotation speed of the cooling fan is adjusted based on the average cooling time adjustment information, the temperature adjustment information, and the use time adjustment information, and the cooling fan is adjusted according to the rotation speed and the calculated average cooling time of the light source lamp. It is designed to rotate. That is, considering the usage status by the user and the usage state of the light source lamp, the rotation speed of the cooling fan is set to the average cooling time so that the light source lamp can be cooled within the average cooling time of the light source lamp so far. It is possible to appropriately adjust based on the adjustment information, temperature adjustment information, and usage time adjustment information.

  Thereby, the light source lamp can be efficiently cooled without increasing the rotational speed of the cooling fan more than necessary. In addition, it is possible to provide a projection-type image display device that is excellent in usability by preventing an increase in noise generated with an increase in the rotational speed of the cooling fan.

  According to the second aspect of the present invention, after the light source lamp is turned off after the transition to the standby mode, the cooling fan is controlled by the fan drive control unit until the power supply from the power supply unit to the fan drive control unit is cut off. Based on the cooling time measured every time the light source lamp is turned off, the average cooling time of the light source lamp so far is calculated based on the cooling time when the light source lamp is cooled by being rotated at a predetermined rotational speed. Furthermore, the average cooling time adjustment information related to the adjustment of the rotation speed of the cooling fan corresponding to the average cooling time is acquired from the average cooling time adjustment information recording means. The rotation speed of the cooling fan is adjusted based on the average cooling time adjustment information, and the cooling fan is driven to rotate according to the rotation speed and the calculated average cooling time of the light source lamp. In other words, considering the usage situation by the user, the rotation speed of the cooling fan is set appropriately based on the average cooling time adjustment information so that the light source lamp can be cooled within the average cooling time of the light source lamp so far. Can be adjusted.

  Thereby, the light source lamp can be efficiently cooled without increasing the rotational speed of the cooling fan more than necessary. In addition, it is possible to provide a projection-type image display device that is excellent in usability by preventing an increase in noise generated with an increase in the rotational speed of the cooling fan.

  According to the third aspect of the present invention, it is possible to obtain the same effect as the second aspect of the invention, particularly for adjusting the rotation speed of the cooling fan corresponding to the temperature of the light source lamp. The temperature adjustment information is acquired from the temperature adjustment information recording means, and the rotation speed of the cooling fan is adjusted based on the temperature adjustment information. Therefore, the rotation speed of the cooling fan is adjusted. Therefore, the light source lamp can be cooled more efficiently.

  According to the invention described in claim 4, it is needless to say that the same effect as that of the invention described in claim 2 can be obtained, and in particular, the adjustment of the rotational speed of the cooling fan corresponding to the usage time of the light source lamp. The usage time adjustment information is acquired from the usage time adjustment information recording means, and the rotational speed of the cooling fan is adjusted based on the usage time adjustment information. The adjustment can be performed more appropriately in consideration of the use state of the light source lamp, and the light source lamp can be cooled more efficiently.

  According to the fifth aspect of the present invention, it is possible to obtain the same effect as that of the second aspect of the invention, particularly for adjusting the rotation speed of the cooling fan corresponding to the temperature of the light source lamp. The temperature adjustment information is acquired from the temperature adjustment information recording means, and the usage time adjustment information related to the adjustment of the rotation speed of the cooling fan corresponding to the usage time of the light source lamp is acquired from the usage time adjustment information recording means, Since the rotation speed of the cooling fan is adjusted based on the temperature adjustment information and the usage time adjustment information, the rotation speed of the cooling fan is adjusted more appropriately in consideration of the usage condition of the light source lamp. The light source lamp can be cooled more efficiently.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

  FIG. 1 is a perspective view showing a projector 100 exemplified as a preferred embodiment of a projection type video display apparatus to which the present invention is applied, and FIG. 2 is a block diagram showing a main configuration of the projector 100. 1 shows a state in which a case body 11 (described later) of the projector main body 1 constituting the projector 100 is opened, and illustration of a remote controller 2 (described later) is omitted.

  A projector (projection-type video display device) 100 according to the present invention forms an image based on image information input from, for example, a personal computer or a video camera (not shown), and the formed image is provided in front. This is an apparatus that projects an enlarged image on a screen (not shown). Specifically, as shown in FIGS. 1 and 2, a projector main body 1 and a remote controller 2 for remotely operating the projector main body 1 ( "Remote control"; see FIG. 2).

  First, the projector body 1 will be described.

  The projector body 1 includes a projection unit 12 that projects an image (video), a cooling fan 13 that cools a light source lamp 121 provided in the projection unit 12, and a temperature sensor that detects the temperature of the light source lamp 121. 14, a signal receiving unit 15 that receives a signal transmitted from the remote controller 2, an EEPROM 16, a RAM 17, a CPU 18, a timer 19, and a power supply unit 10 for supplying power to each unit.

  The projection unit 12 includes, for example, a light source lamp 121 that emits high-luminance light, a reflection mirror 122 that reflects light emitted from the light source lamp 121, and DMD (Digital Micromirror Device) 123 and an optical lens 124 through which the light reflected by the DMD 123 passes.

  The light source lamp 121 is composed of, for example, a metal halide lamp, an ultrahigh pressure mercury lamp, or the like, and emits light optically modulated by the DMD 123.

  For example, the DMD 123 functions as an optical modulation element that forms an optical image by modulating light incident from the light source lamp 121 and reflected by the reflection mirror 122 according to image information.

  The optical lens 124 is constituted by, for example, a zoom lens or the like, and condenses the light (optical image) modulated by the DMD 123 and enlarges and projects it on a screen or the like.

  For example, the temperature sensor 14 is disposed at a predetermined position (not shown) in the vicinity of the light source lamp 121, detects the temperature when the light source lamp 121 is used at a predetermined timing, and relates to the detected temperature. Predetermined temperature information is output to the CPU 18.

The cooling fan 13 is disposed at a predetermined position near the light source lamp 121, for example.
The light source lamp 121 is air-cooled by being driven to rotate under the control of the CPU 18. Specifically, the cooling fan 13 shifts to the standby mode based on the operation of the standby state changeover switch 22 by the user, and after the light source lamp 121 is turned off, the cooling fan 13 rotates at a predetermined rotational speed and rotates at a high speed. Is cooled (light source lamp cooling process).

  Here, in the projector 100 according to the present embodiment, the cooling fan 13 rotates at a predetermined rotation speed in a state where the power supply from the power supply unit 10 is performed. The light source lamp cooling process (described later in detail) by the cooling fan 13 according to the above means a process of rotating the cooling fan 13 at a high speed for a predetermined time after the light source lamp 121 is turned off.

  Note that the arrangement and number of the cooling fans 13 may be changed as appropriate.

  The signal receiving unit 15 receives a predetermined signal transmitted from the signal transmitting unit of the remote controller 2. Specifically, the signal receiving unit 15 receives a predetermined signal such as a standby shift instruction signal transmitted from the signal transmission unit of the remote controller 2 based on a predetermined operation of the standby state changeover switch 22 of the remote controller 2 by the user, for example. (Not shown) or the like.

  Further, the signal receiving unit 15 outputs a predetermined signal received to the CPU 18.

  The timer 19 includes, for example, a timer circuit, and measures the usage time of the light source lamp 121, the cooling time of the light source lamp 121, and the like.

  Specifically, the timer 19 measures the usage time (lighting time) of the light source lamp 121 that has been turned on after the power is turned on, as a usage time measuring means. In addition, the timer 19 serves as a cooling time timer, based on the reception by the signal receiver 15 of the standby shift instruction signal transmitted from the signal transmitter 23 in response to the operation of the standby state changeover switch 22 by the user. After the light is turned off, the cooling fan 13 is driven to rotate and the light source lamp 121 is cooled under the control of the CPU 18 until the power supply from the power supply unit 10 is cut off.

  The time information related to the usage time of the light source lamp 121 and the cooling time of the light source lamp 121 measured by the timer 19 is output to the CPU 18, for example, and a predetermined storage area of the EEPROM 16 under the control of the CPU 18. It is designed to be stored inside.

  Here, when the cooling time of the light source lamp 121 exceeds a predetermined time, for example, 1 minute, the information is stored assuming that the cooling time is 1 minute. Further, the information related to the cooling time of the light source lamp 121 is stored in the EEPROM 16 as total cooling time information obtained by integrating the time measured by the timer 19 together with the total number information obtained by integrating the time counted by the timer 19, for example. It has become.

  The power supply unit 10 supplies power to each unit constituting the projector body 1 under the control of the CPU 18.

  Further, the power supply unit 10 includes, for example, a power switch 101 for performing on / off operation of the main power supply of the projector main body 1. That is, when the power of the projector main body 1 is turned on based on a predetermined operation by the user of the power switch 101, power is supplied from the power supply unit 10 to each unit, and the light source lamp 121 and the cooling fan 13 are supplied. Etc. are to be driven. On the other hand, when the power of the projector main body 1 is turned off based on a predetermined operation by the user of the power switch 101, the power supply from the power supply unit 10 is cut off.

When the timer 19 measures the cooling time of the light source lamp 121 until the power supply from the power supply unit 10 is cut off and stores the measured cooling time in the EEPROM 16 or the like,
Even after the power supply from the power supply unit 10 is cut off, the power related to these processes can be performed by using electricity stored in an internal power supply such as a capacitor.

A CPU (Central Processing Unit) 18 centrally controls each unit of the projector 100, reads various programs stored in the EEPROM 16, develops them in the work area of the RAM 17, and executes various processes according to the programs. It is like that.

  Specifically, for example, the CPU 18 executes a predetermined control program based on a standby shift instruction signal transmitted from the remote controller 2 and received by the signal receiving unit 15 to shift the projector 100 to the standby mode. The execution of the process for turning off the light source lamp 121 is controlled. Thereafter, the CPU 18 controls the execution of the light source lamp cooling process in which the used light source lamp 121 is cooled by rotating the cooling fan 13 based on the execution of a predetermined program.

  The standby mode is a mode in which at least the light source lamp 121 is turned off. However, the standby mode is not limited to this, and the execution of functions of other units by controlling the power supply from the power supply unit 10 is also limited. You may make it do.

  A RAM (Random Access Memory) 17 is, for example, a rewritable memory, and constitutes a storage area and a work area for programs and various data read from the storage unit under the control of the CPU 18.

  An EEPROM (Electronically Erasable and Programmable Read Only Memory) 16 is, for example, a read-only memory that can electrically write and erase data. Various programs executed under the control of the CPU 18, each program Data related to processing is stored.

  Specifically, the EEPROM 16 stores, for example, a fan drive control program 16a, an average time calculation program 16b, an average cooling time adjustment information acquisition program 16c, a temperature adjustment information acquisition program 16d, a use time adjustment information acquisition program 16e, and the like. Yes.

  The fan drive control program 16a is a program for realizing a function related to a process of rotating the cooling fan 13 at a predetermined rotation speed under the control of the CPU 18. That is, in a state where power is supplied from the power supply unit 10 based on the ON operation of the power switch 101, the CPU 18 controls the rotation drive of the cooling fan 13 to control the cooling fan 13. It is designed to rotate at a predetermined speed. When the standby shift instruction output from the remote controller 2 is input to the CPU 18, the CPU 18 changes (adjusts) the rotation speed of the cooling fan 13 as a fan drive control unit to cool the light source lamp 121. ).

  Specifically, the CPU 18 adjusts the rotation speed of the cooling fan 13 at a high speed based on the rotation speed adjustment amount (average cooling time adjustment information) acquired in the average cooling time adjustment information acquisition process described later, The cooling fan 13 is rotationally driven according to the adjusted rotation speed and the average cooling time calculated in the average time calculation process.

  Further, in adjusting the rotation speed of the cooling fan 13, the CPU 18 adjusts the rotation speed of the cooling fan 13 based on the rotation speed adjustment amount (temperature adjustment information) acquired in the temperature adjustment information acquisition process (described later). It is supposed to be. Furthermore, the CPU 18 adjusts the rotation speed of the cooling fan 13 based on the rotation speed adjustment amount (use time adjustment information) acquired in the use time adjustment information acquisition process (described later).

The average time calculation program 16b instructs the CPU 18 as the average time calculation means to measure the light source lamp 1 timed by the timer 19 every time the light source lamp is turned off after the transition to the standby mode.
21 is a program for realizing a function related to the average cooling time calculation processing for calculating the average cooling time of the light source lamp 121 so far based on the cooling time of 21.

  That is, based on the execution of the average time calculation program 16b by the CPU 18, the total cooling time information and the total number information as information relating to the cooling time of the light source lamp 121 are read from the EEPROM 16, and the total cooling time is divided by the total number of times. Thus, the average cooling time of the light source lamp 121 so far is calculated.

  The average cooling time calculation process may be executed at any timing as long as it can be executed after the power supply from the power supply unit 10 is started until the light source lamp 121 is turned off.

  The average cooling time adjustment information acquisition program 16c gives the CPU 18 the rotation speed adjustment amount corresponding to the average cooling time calculated in the average cooling time calculation process from the average cooling time adjustment table t1 as the average cooling time adjustment information acquisition means. It is a program for realizing a function related to an acquired average cooling time adjustment information acquisition process.

  The average cooling time adjustment information acquisition process may be executed at any timing as long as it can be executed after the average cooling time calculation process and before the light source lamp 121 is turned off.

  The temperature adjustment information acquisition program 16d causes the CPU 18 as temperature adjustment information acquisition means to acquire, from the temperature adjustment table t2, a rotation speed adjustment amount corresponding to the temperature of the light source lamp 121 detected by the temperature sensor 14. It is a program for realizing the function concerning.

  The temperature adjustment information acquisition process may be executed at any timing as long as it can be executed after the average cooling time calculation process and before the light source lamp 121 is turned off.

  The usage time adjustment information acquisition program 16e, as the usage time adjustment information acquisition means, acquires the rotation speed adjustment amount corresponding to the usage time of the light source lamp 121 measured by the timer 19 from the usage time adjustment table t3. It is a program for realizing a function related to adjustment information acquisition processing.

  The usage time adjustment information acquisition process may be executed at any timing as long as it can be executed after the average cooling time calculation process and before the light source lamp 121 is turned off.

  The EEPROM 16 includes, for example, an average cooling time adjustment table t1 (see FIG. 3), a temperature adjustment table t2 (see FIG. 4), and a usage time adjustment table t3 (see FIG. 5) used in the light source lamp cooling process by the projector 100. ) Is stored.

  The average cooling time adjustment table t1 includes, for example, the average cooling time of the light source lamp 121 and the rotation of the cooling fan 13 that is defined in advance so that the light source lamp 121 can be appropriately cooled within the average cooling time. This is associated with a rotational speed adjustment amount (average cooling time adjustment information) related to the speed adjustment. Here, the EEPROM 16 constitutes an average cooling time adjustment information recording means for recording the average cooling time adjustment table t1.

  The temperature adjustment table t2 is, for example, the rotation speed adjustment related to the adjustment of the temperature of the light source lamp 121 and the rotation speed of the cooling fan 13 that is defined in advance so that the light source lamp 121 at the temperature can be appropriately cooled. The amount (temperature adjustment information) is associated with the amount. Here, the EEPROM 16 constitutes temperature adjustment information recording means for recording the temperature adjustment table t2.

  For example, the use time adjustment table t3 is used to adjust the use time of the light source lamp 121 and the rotation speed of the cooling fan 13 that is defined in advance so that the light source lamp 121 can be appropriately cooled after the elapse of the time. This rotational speed adjustment amount (usage time adjustment information) is associated with it. Here, the EEPROM 16 constitutes a usage time adjustment information recording means for recording the usage time adjustment table t3.

  The rotational speed adjustment amount related to the average cooling time adjustment table t1, the temperature adjustment table t2, and the usage time adjustment table t3 is, for example, an index before the rotational speed adjustment when the maximum rotational speed of the cooling fan 13 is 100. Represents the amount of adjustment of the rotational speed with respect to a predetermined rotational speed (for example, 65).

  That is, in the average cooling time adjustment table t1, the shorter the average cooling time, that is, the shorter the time until the power is turned off after the light source lamp 121 is turned off, the larger the rotational speed adjustment amount becomes. It is defined that the rotational speed of the fan 13 can be adjusted to rotate at a higher speed.

  Further, in the temperature adjustment table t2, the higher the temperature of the light source lamp 121, the larger the rotational speed adjustment amount, so that the rotational speed of the cooling fan 13 can be adjusted to rotate at a higher speed. It is stipulated in.

  Further, in the usage time adjustment table t3, the longer the usage time of the light source lamp 121 is, the larger the rotational speed adjustment amount becomes, and the rotational speed of the cooling fan 13 can be adjusted to rotate at a higher speed. It is defined as possible.

  In addition, the numerical value of the rotational speed adjustment amount according to the average cooling time adjustment table t1, the temperature adjustment table t2, and the use time adjustment table t3 is an example, and is not limited thereto.

  Next, the remote controller 2 will be described.

  The remote controller 2 includes a control unit 21, a standby state changeover switch 22 for shifting the projector body 1 to the standby mode, a signal transmission unit 23 that transmits a predetermined signal output based on a predetermined operation of the remote controller 2, and the like. It has.

  The control unit 21 includes, for example, a CPU, a memory, and the like, and comprehensively controls each unit of the remote controller 2.

  The standby state changeover switch 22 is for switching between the standby mode and the image projection mode of the projector 100 based on a predetermined operation by the user. Specifically, the standby state changeover switch 22 is predeterminedly operated. A standby shift instruction signal for shifting to the standby mode and an instruction signal for shifting to the image projection mode are output alternately.

  Thus, the standby state changeover switch 22 constitutes standby mode instruction means.

  For example, the signal transmission unit 23 outputs a predetermined signal such as a standby shift instruction signal under the control of the control unit 21 based on a predetermined operation such as a standby state changeover switch 22 or another operation switch (not shown) by the user. It is supposed to send.

  Note that information communication between the remote controller 2 and the projector main body 1 may be performed by, for example, a wireless communication method or a wired communication method.

  Next, the light source lamp cooling process by the projector 100 will be described with reference to FIG.

  Here, FIG. 6 is a flowchart showing an example of an operation related to the light source lamp cooling process.

  In the light source lamp cooling process described below, information related to the cooling time of the light source lamp 121 (total cooling time information and total number information) acquired by using the projector 100 a predetermined number of times is stored in the EEPROM 16. The state is stored in advance in the area.

  First, when the power of the projector 100 is turned on (on) based on a predetermined operation of the power switch 101 by the user (step S1), the CPU 18 shifts to an image projection mode, executes a predetermined control program, and performs projection. The light source lamp 121 of the unit 12 is controlled to be turned on, and the fan drive control program 16a is executed to control to rotate the cooling fan 13 at a predetermined rotational speed (step S2). Here, based on the light source lamp 121 being turned on, the CPU 18 executes a predetermined control program and controls the timer 19 to start measuring the usage time of the light source lamp 121 (step S3).

  Further, the CPU 18 reads the average time calculation program 16b from the EEPROM 16 and develops it in the RAM 17, and based on execution of the average time calculation program 16b, information related to the cooling time of the light source lamp 121 (total cooling time information and total number of times information). ), An average cooling time calculation process for calculating the average cooling time of the light source lamp 121 so far is executed (step S4).

  Subsequently, the CPU 18 reads out the average cooling time adjustment information acquisition program 16c from the EEPROM 16, expands it in the RAM 17, and based on the execution of the average cooling time adjustment information acquisition program 16c, the average calculated in the average cooling time calculation process An average cooling time adjustment information acquisition process for acquiring the rotation speed adjustment amount corresponding to the cooling time from the average cooling time adjustment table t1 is executed (step S5).

  Then, for example, after image projection is performed using the projection unit 12 of the projector body 1, when the user performs a predetermined operation on the standby state changeover switch 22 of the remote controller 2, the control unit 21 executes a predetermined control program. Based on this, the signal transmission unit 23 is controlled to transmit a standby shift instruction signal to the projector main body 1 (step S6).

  In the projector body 1, when the signal receiving unit 15 receives the standby shift instruction signal transmitted from the remote controller 2, the CPU 18 turns off the light source lamp 121 and timer 19 based on execution of a predetermined control program. Is controlled to stop measuring the usage time of the light source lamp 121 (step S7).

  Subsequently, the CPU 18 reads the usage time adjustment information acquisition program 16e from the EEPROM 16, expands it in the RAM 17, and based on the execution of the usage time adjustment information acquisition program 16e, the CPU 18 sets the usage time of the light source lamp 121 measured by the timer 19. Use time adjustment information acquisition processing for acquiring the corresponding rotation speed adjustment amount from the use time adjustment table t3 is executed (step S81).

  Further, the CPU 18 reads out the temperature adjustment information acquisition program 16d from the EEPROM 16 and develops it in the RAM 17, and based on the execution of this temperature adjustment information program, the CPU 18 reads the temperature adjustment information acquisition program 16d from the temperature sensor 14 and inputs the temperature information related to the temperature information. A temperature adjustment information acquisition process for acquiring the rotational speed adjustment amount corresponding to the temperature from the temperature adjustment table t2 is executed (step S82).

  Next, the CPU 18 rotates the cooling fan 13 based on the value obtained by adding the respective rotational speed adjustment amounts acquired in the average cooling time adjustment information acquisition process, the use time adjustment information acquisition process, and the temperature adjustment information acquisition process. The speed is set, the rotation speed of the cooling fan 13 is increased according to the set rotation speed, and the cooling fan 13 is driven according to the average cooling time of the light source lamp 121 calculated in the average cooling time calculation process ( Step S9).

  Further, when the light source lamp 121 is turned off in step S7, the CPU 18 executes a predetermined control program to start time measurement by the timer 19 (step S83).

  When the power supply is cut off based on a predetermined operation of the power switch 101 by the user (step S10), the time counted by the timer 19 is stored in the EEPROM 16 as the cooling time of the light source lamp 121 under the control of the CPU 18. (Step S11).

  Note that if the time when the time measurement is started in step S83 (cooling time of the light source lamp 121) is equal to or longer than the average cooling time, that is, the power switch 101 is not operated by the user even after the average cooling time has elapsed. When the supply is not interrupted, the CPU 18 returns the rotational speed of the cooling fan 13 to the normal state based on the execution of a predetermined control program.

  As described above, according to the projector 100 of the present embodiment, the cooling fan is controlled under the control of the CPU 18 after the light source lamp 121 is turned off and the power supply from the power supply unit 10 is cut off after the transition to the standby mode. 13 is rotationally driven to cool the light source lamp 121, the timer 19 measures the cooling time, and based on the cooling time measured every time the light source lamp 121 is turned off, the average cooling time of the light source lamp 121 so far Further, the rotation speed adjustment amount corresponding to the average cooling time is acquired from the average cooling time adjustment table t1, and the rotation speed adjustment amount corresponding to the temperature of the light source lamp 121 is acquired from the temperature adjustment table t2. In addition, the rotational speed adjustment amount corresponding to the usage time of the light source lamp 121 is acquired from the usage time adjustment table t3. You have me. The rotational speed of the cooling fan 13 is set based on these rotational speed adjustment amounts, and the cooling fan 13 is driven according to the rotational speed and the calculated average cooling time of the light source lamp 121. Yes. That is, the rotational speed of the cooling fan 13 is determined so that the light source lamp 121 can be cooled within the average cooling time of the light source lamp 121 so far in consideration of the usage situation by the user and the usage state of the light source lamp 121. Can be appropriately adjusted based on the rotation speed adjustment amount.

  Thereby, the light source lamp 121 can be efficiently cooled without increasing the rotational speed of the cooling fan 13 more than necessary. In addition, it is possible to provide a projector 100 that is excellent in usability by preventing an increase in noise generated as the rotational speed of the cooling fan 13 increases.

  The present invention is not limited to the above-described embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.

  For example, the rotational speed of the cooling fan 13 is adjusted in consideration of the average cooling time, temperature, and usage time of the light source lamp 121, but is not limited to this, and at least the average cooling time of the light source lamp 121. If it is the structure which adjusts based on the rotational speed adjustment amount which concerns on, it can change suitably whether the rotational speed adjustment amount which concerns on each of the temperature of the light source lamp 121, and each usage time is used.

  Further, in the above embodiment, the standby state changeover switch 22 as the standby mode instruction means is provided in the remote controller 2, but the present invention is not limited to this and may be provided in the projector main body 1.

  Further, in the above embodiment, the power supply is cut off based on the operation of the power switch 101. However, the power supply may be removed by removing the power plug from the outlet.

  Further, the configuration of the projection unit 12 is not limited to the above, and may be changed as appropriate. For example, a color wheel that is a rotary divided color filter that switches light emitted from the light source lamp 121 to monochromatic light of R (red), G (green), or B (blue) may be provided. good.

It is a perspective view which shows the projector illustrated as suitable one Embodiment of the projection type video display apparatus to which this invention is applied. It is a block diagram which shows the principal part structure of the projector of FIG. It is a figure which shows the average cooling time adjustment table used by the light source lamp cooling process by the projector of FIG. It is a figure which shows the temperature adjustment table used by the light source lamp cooling process by the projector of FIG. It is a figure which shows the use time adjustment table used by the light source lamp cooling process by the projector of FIG. 3 is a flowchart illustrating an example of an operation related to a light source lamp cooling process by the projector of FIG. 1.

Explanation of symbols

100 Projector (Projection-type image display device)
DESCRIPTION OF SYMBOLS 1 Projector body 121 Light source lamp 13 Cooling fan 14 Temperature sensor (temperature detection means)
16 EEPROM (average cooling time adjustment information recording means, temperature adjustment information recording means, use time adjustment information recording means)
t1 Average cooling time adjustment table t2 Temperature adjustment table t3 Usage time adjustment table 18 CPU (fan drive control means, average time calculation means, average cooling time adjustment information acquisition means, temperature adjustment information acquisition means, usage time adjustment information acquisition means)
19 Timer (cooling time measuring means, usage time measuring means)
10 Power supply (power supply means)
101 Power switch 2 Remote controller 22 Standby state changeover switch (standby mode instruction means)

Claims (5)

A light source lamp for forming an optical image, a cooling fan for cooling the light source lamp, fan drive control means for rotating the cooling fan, and power supply for supplying power to the fan drive control means A projection-type image display device comprising means,
A standby mode instruction means for outputting a standby transition instruction for turning off the light source lamp and causing the projection display apparatus to transition to a standby mode;
Based on the input of the standby shift instruction outputted from the standby mode instruction means, the fan drive control means after the light source lamp is turned off until the power supply from the power supply means to the fan drive control means is cut off Cooling time measuring means for measuring the cooling time during which the cooling fan is driven to rotate at a predetermined rotational speed and the light source lamp is cooled,
Average time calculating means for calculating an average cooling time of the light source lamp so far based on the cooling time counted by the cooling time measuring means each time the light source lamp is turned off;
An average cooling time adjustment information recording means for recording the average cooling time of the light source lamp and the average cooling time adjustment information relating to the adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Temperature detecting means for detecting the temperature of the light source lamp;
Temperature adjustment information recording means for associating and recording the temperature of the light source lamp and temperature adjustment information related to adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Usage time measuring means for measuring the usage time of the light source lamp;
Use time adjustment information recording means for associating and recording the use time of the light source lamp and the use time adjustment information relating to the adjustment of the rotation speed of the cooling fan rotated by the fan drive control means;
Average cooling time adjustment information acquisition means for acquiring the average cooling time adjustment information corresponding to the average cooling time calculated by the average time calculation means from the average cooling time adjustment information recording means;
Temperature adjustment information acquisition means for acquiring the temperature adjustment information corresponding to the temperature of the light source lamp detected by the temperature detection means from the temperature adjustment information recording means;
Use time adjustment information acquisition means for acquiring from the use time adjustment information recording means the use time adjustment information corresponding to the use time of the light source lamp timed by the use time counting means,
The fan drive control means includes the average cooling time adjustment information acquired by the average cooling time adjustment information acquisition means, the temperature adjustment information acquired by the temperature adjustment information acquisition means, and the use time adjustment information acquisition means. The rotation speed of the cooling fan is adjusted based on the acquired usage time adjustment information, and the cooling fan is rotated in accordance with the adjusted rotation speed and the average cooling time calculated by the average time calculation means. A projection-type image display device that is driven. A light source lamp for forming an optical image, a cooling fan for cooling the light source lamp, fan drive control means for rotating the cooling fan, and power supply for supplying power to the fan drive control means A projection-type image display device comprising means,
A standby mode instruction means for outputting a standby transition instruction for turning off the light source lamp and causing the projection display apparatus to transition to a standby mode;
Based on the input of the standby shift instruction outputted from the standby mode instruction means, the fan drive control means after the light source lamp is turned off until the power supply from the power supply means to the fan drive control means is cut off Cooling time measuring means for measuring the cooling time during which the cooling fan is driven to rotate at a predetermined rotational speed and the light source lamp is cooled,
Average time calculating means for calculating an average cooling time of the light source lamp so far based on the cooling time counted by the cooling time measuring means each time the light source lamp is turned off;
An average cooling time adjustment information recording means for recording the average cooling time of the light source lamp and the average cooling time adjustment information relating to the adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Average cooling time adjustment information acquisition means for acquiring the average cooling time adjustment information corresponding to the average cooling time calculated by the average time calculation means from the average cooling time adjustment information recording means,
The fan drive control unit adjusts the rotation speed of the cooling fan based on the average cooling time adjustment information acquired by the average cooling time adjustment information acquisition unit, and the adjusted rotation speed and the average time A projection-type image display apparatus, wherein the cooling fan is driven to rotate in accordance with the average cooling time calculated by the calculating means. Temperature detecting means for detecting the temperature of the light source lamp;
Temperature adjustment information recording means for associating and recording the temperature of the light source lamp and temperature adjustment information related to adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Temperature adjustment information acquisition means for acquiring the temperature adjustment information corresponding to the temperature of the light source lamp detected by the temperature detection means from the temperature adjustment information recording means,
3. The projection type according to claim 2, wherein the fan drive control unit further adjusts a rotation speed of the cooling fan based on the temperature adjustment information acquired by the temperature adjustment information acquisition unit. Video display device. Usage time measuring means for measuring the usage time of the light source lamp;
Use time adjustment information recording means for associating and recording the use time of the light source lamp and the use time adjustment information relating to the adjustment of the rotation speed of the cooling fan rotated by the fan drive control means;
Use time adjustment information acquisition means for acquiring from the use time adjustment information recording means the use time adjustment information corresponding to the use time of the light source lamp timed by the use time counting means,
The said fan drive control means adjusts the rotational speed of the said cooling fan further based on the said usage time adjustment information acquired by the said usage time adjustment information acquisition means, The said fan is characterized by the above-mentioned. Projection-type image display device. Temperature detecting means for detecting the temperature of the light source lamp;
Temperature adjustment information recording means for associating and recording the temperature of the light source lamp and temperature adjustment information related to adjustment of the rotation speed of the cooling fan that is rotationally driven by the fan drive control means;
Usage time measuring means for measuring the usage time of the light source lamp;
Use time adjustment information recording means for associating and recording the use time of the light source lamp and the use time adjustment information relating to the adjustment of the rotation speed of the cooling fan rotated by the fan drive control means;
Temperature adjustment information acquisition means for acquiring the temperature adjustment information corresponding to the temperature of the light source lamp detected by the temperature detection means from the temperature adjustment information recording means;
Use time adjustment information acquisition means for acquiring from the use time adjustment information recording means the use time adjustment information corresponding to the use time of the light source lamp timed by the use time counting means,
The fan drive control unit is further configured to control the cooling fan based on the temperature adjustment information acquired by the temperature adjustment information acquisition unit and the use time adjustment information acquired by the use time adjustment information acquisition unit. The projection type image display apparatus according to claim 2, wherein the rotation speed is adjusted.

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