JP2015025836A - Projector and method for controlling projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector capable of preventing a storage medium stored in a housing from being exposed under a high temperature, when a temperature in the housing of the projector is increased.SOLUTION: A projector 1 includes a disk tray 58 which can be stored in or discharged from a housing 2 of the projector 1, an exhaust shutter 9 closing an opening 3, when the disk tray 58 is stored in the housing 2 and opening the opening 3, when a part of the disk tray 58 is discharged from the housing 2, and a DVD fan 29 discharging air around the disk tray 58 from the opening 3.

Description

  The present invention relates to a projector that projects an image and a projector control method.

  2. Description of the Related Art Conventionally, a projector that projects an image on a projection surface such as a screen is integrally provided with an image reproducing means for reproducing image information recorded on a storage medium such as a DVD (Digital Versatile Disc) and a speaker for outputting sound. Things are known. In such a projector, when some failure occurs and the temperature inside the casing rises, there is a possibility that a storage medium such as a DVD housed in the casing is exposed to a high temperature.

  Patent Document 1 discloses a projector that ejects a storage medium when an abnormality occurs. According to such a projector, when an abnormality occurs in the projector and the internal temperature rises, it is possible to discharge the storage medium and prevent the temperature of the storage medium from rising.

  Japanese Patent Application Laid-Open No. 2004-228561 includes an air inlet for introducing air for cooling the image reproducing apparatus, an exhaust unit, and the like, and exhausts cooling air that has cooled the image reproducing apparatus and exhausts projection apparatus cooling air that has cooled the projection apparatus. A projector is disclosed. According to such a projector, the image reproducing apparatus can be sufficiently cooled even when the image reproducing apparatus having a large amount of heat generation is provided.

JP 2007-47442 A JP 2009-47828 A

However, in the projector as disclosed in Patent Document 1, when an abnormality occurs, the storage medium is discharged out of the housing, so that there is no one around and there is a case where the storage medium is not noticed. For this reason, there is a risk that the ejected storage medium may collide with surrounding people or objects, or the storage medium may be dusty or dusty.
Further, the projector as in Patent Document 2 is configured to mainly cool the circuit unit (IC or the like) or the drive unit (pickup) of the image reproducing apparatus, and efficiently cool the storage medium accommodated in the image reproducing apparatus. There was a problem that it was also necessary to do.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A projector according to this application example accommodates image storage means for projecting projection light by modulating light emitted from a light source according to image information recorded on the storage medium, and the storage medium. A projector having a storage medium storage section and a casing for storing these, and exhausting air inside the casing and storing the storage medium storage section in the casing or discharging from the casing In conjunction with the opening and the storing or discharging operation of the storage medium container, the opening is closed when the storage medium container is stored in the housing, and a part of the storage medium container is When exhausted from the housing, an exhaust shutter that opens the opening, transport means for storing the storage medium housing portion in the housing or exhausting from the housing, and air inside the housing, The opening A cooling means for discharging and discharging, a temperature measuring means for measuring the temperature inside the casing, and when the temperature exceeds a first temperature, a part of the storage medium accommodating portion is transferred to the casing by the conveying means. And a control means for operating the cooling means while opening the opening by further discharging.

  According to this application example, when the temperature inside the housing of the projector rises, a part of the storage medium housing portion is discharged from the housing, the exhaust shutter opens in conjunction with the opening, and the cooling means opens the inside of the housing. Since the air is discharged through the opened opening, the periphery of the storage medium is effectively cooled and the storage medium is prevented from being exposed to high temperatures. In addition, since only a part of the storage medium container is discharged, it is possible to prevent the discharged storage medium container from colliding with surrounding people or objects. Further, since the opening is closed when the storage medium housing portion is housed in the housing, entry of foreign matter into the housing can be prevented.

  Application Example 2 In the projector according to the application example described above, it is preferable that the projector further includes a notification unit that notifies that the cooling unit is operating.

  According to this application example, the notification unit notifies when the storage medium is cooled by discharging the air inside the housing of the projector from the opening. That is, since the temperature inside the housing exceeds the first temperature, the user is informed that the air inside the housing is being exhausted from the opening, so the user is accidentally exhausted from the opening. It is possible to call attention so as not to touch the air.

  Application Example 3 In the projector according to the application example described above, the control unit stops the operation of the cooling unit when the temperature becomes lower than the second temperature, and the storage unit accommodates the storage medium. It is preferable to close the opening by housing the part in the housing.

  According to this application example, when the temperature inside the housing of the projector becomes lower than the second temperature, the storage medium housing portion is housed in the housing and the opening is closed. Image information can be reproduced. In addition, the storage medium can be prevented from being cooled more than necessary.

  Application Example 4 A projector control method according to this application example includes an opening provided in a housing, a storage medium housing that can be stored in the housing or discharged from the housing from the opening, In accordance with image information recorded on a storage medium stored in the storage medium storage unit, image projection means for projecting projection light by modulating light emitted from the light source, and for storing or discharging operation of the storage medium storage unit A control method for a projector, comprising: an exhaust shutter that interlocks to close or open the opening; and a cooling unit that discharges air inside the casing from the opening. A temperature measuring step for measuring, a transporting step for storing or ejecting the storage medium accommodating portion in or from the housing, and the temperature measuring step detect that the temperature has exceeded a first temperature. And a control step of operating the cooling means while opening the opening by discharging a part of the storage medium housing portion from the housing in the transporting step. .

  According to this application example, when the temperature inside the housing of the projector rises, a part of the storage medium housing portion is discharged from the housing, the exhaust shutter opens in conjunction with the opening, and the cooling means opens the inside of the housing. Therefore, the periphery of the storage medium is effectively cooled and the storage medium is prevented from being exposed to a high temperature. In addition, since only a part of the storage medium container is discharged, it is possible to prevent the discharged storage medium container from colliding with surrounding people or objects. Further, since the opening is closed when the storage medium housing portion is housed in the housing, entry of foreign matter into the housing can be prevented.

1 is an external perspective view of a projector according to an embodiment. The external appearance perspective view which shows the opening-and-closing state of an exhaust shutter partially. Sectional drawing which shows the opening-and-closing state of an exhaust shutter partially. 1 is a block diagram showing a circuit configuration of a projector according to an embodiment. The flowchart which shows the operation | movement of the temperature monitoring process of a projector.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the following embodiment does not limit the invention according to the scope of claims, and all combinations of features in the embodiment are based on the invention. It is not always essential to the solution.

(Embodiment)
FIG. 1 is an external perspective view of a projector 1 according to the present embodiment, in which FIG. 1A is a view of the projector 1 viewed from an oblique rear side, and FIG. 1B is a view of the projector 1 viewed obliquely forward. In the present embodiment, the description will be made assuming that the direction in which an image is projected is the front.

  As shown in FIG. 1, the left surface 2L of the casing 2 of the projector 1 is provided with an air inlet 7 and a left speaker 41L. An intake fan 27 (see FIG. 4) (not shown) is provided inside the intake port 7 inside the housing 2.

  The right surface 2R of the housing 2 is provided with an exhaust port 8 and a right speaker 41R. An exhaust fan 28 (see FIG. 4) (not shown) is provided inside the exhaust port 8 inside the housing 2.

  Further, an input terminal 6, a disc tray 58 for storing the DVD medium M (see FIG. 2) inside the housing 2, and an opening 3 provided on the rear surface 2S are opened on the rear surface 2S of the housing 2. Alternatively, an exhaust shutter 9 that closes and a notification unit 24 are provided. Further, the disk tray 58 can be stored in or discharged from the housing 2 through the opening 3 and is covered by the exhaust shutter 9 when stored. A DVD fan 29 (see FIG. 3) is provided inside the exhaust shutter 9 inside the housing 2 so that the DVD medium M can be cooled by discharging the air around the disc tray 58 from the opening 3. It has become.

  Further, the upper surface 2T of the housing 2 is provided with an input operation means 23 that is configured by a plurality of operation keys and performs various instructions to the projector 1.

  Further, a projection lens 13 that projects an image onto an external screen SC (see FIG. 4) is exposed on the front surface 2F of the housing 2.

  Further, the air taken in by the intake fan 27 from the intake port 7 is discharged from the exhaust port 8 by the exhaust fan 28 after cooling the inside of the housing 2.

Next, the manner in which the storage and discharge operation of the disc tray 58 and the opening / closing operation of the exhaust shutter 9 in the projector 1 of this embodiment are interlocked will be described with reference to FIGS.
2 is an external perspective view partially showing the open / close state of the exhaust shutter 9 of the projector 1 and the storage and discharge states of the disk tray 58. FIG. 2A shows the disk tray 58 being discharged from the housing 2. FIG. The figure which shows the state which the exhaust shutter 9 open | released the opening part 3, The figure (b) is a figure which shows the state in which a part of disc tray 58 was discharged | emitted from the housing | casing 2, and the exhaust shutter 9 opened the opening part 3. FIG. FIG. 3C is a view showing a state where the disk tray 58 is housed in the housing 2 and the exhaust shutter 9 closes the opening 3.

  As shown in FIG. 2A, the DVD medium M can be attached to and detached from the disc tray 58 when the disc tray 58 is ejected from the housing 2. The exhaust shutter 9 opens the opening 3. The disc tray 58 corresponds to a storage medium accommodation unit.

  As shown in FIG. 2B, the exhaust shutter 9 opens the opening 3 when a part of the disc tray 58 is discharged from the housing 2. In this state, the DVD medium M is mostly accommodated in the housing 2.

  As shown in FIG. 2C, when the disc tray 58 is housed in the housing 2, the exhaust shutter 9 closes the opening 3.

  FIG. 3 is a sectional view partially showing the open / close state of the exhaust shutter 9 of the projector 1 and the storage and discharge states of the disk tray 58. FIG. 3A shows the disk tray 58 stored in the housing 2. FIG. FIG. 5B is a diagram showing a state in which the disk tray 58 has been ejected from the housing 2. 3, the left side is the rear surface 2S of the housing 2 in the drawing view.

  As shown in FIG. 3, the exhaust shutter 9 is rotatable about a rotation shaft 9d. An exhaust shutter opening / closing member 9a is provided at the back of the disc tray 58, and the exhaust shutter opening / closing member 9a is rotatable about a rotation shaft 9c. Further, the exhaust shutter 9 and the exhaust shutter opening / closing member 9a are connected by an exhaust shutter opening / closing bar 9b. When the exhaust shutter opening / closing member 9a rotates, the exhaust shutter 9 rotates in conjunction with the opening 3 and opens. Open or close. The exhaust shutter opening / closing material 9a has a rotation range limited by a stopper 9e, and is pushed by a spring mechanism 9f in a direction to open the exhaust shutter 9. A DVD fan 29 is provided in the back of the exhaust shutter 9.

  As shown in FIG. 3A, when the disc tray 58 is stored in the housing 2, the disc tray 58 pushes the lower end of the exhaust shutter opening / closing material 9a in the direction in which the exhaust shutter 9 is closed. As a result, the exhaust shutter 9 rotates and closes the opening 3.

  As shown in FIG. 3B, when a part of the disc tray 58 is discharged, the exhaust shutter opening / closing member 9a is rotated in the direction of opening the exhaust shutter 9 by the spring mechanism 9f. Open the opening 3. Since the exhaust shutter opening / closing material 9a does not rotate any more by the stopper 9e, the exhaust shutter 9 remains open as shown in FIG. 3B even when the disc tray 58 is completely discharged.

At this time, the DVD fan 29 operates, and the air around the disc tray 58 is discharged from the opening 3. Specifically, the air discharged by the DVD fan 29 flows on the disk tray 58 and is discharged from the opening 3, thereby cooling the DVD medium M on the disk tray 58.
The DVD fan 29 corresponds to a cooling unit.

  Next, the circuit configuration of the projector 1 according to the present embodiment will be described with reference to the block diagram of FIG. FIG. 4 is a block diagram illustrating a circuit configuration of the projector 1.

  As shown in FIG. 4, the projector 1 includes an input terminal 6, an image projection unit 10, an OSD processing unit 16, an image signal processing unit 17, a signal input unit 18, a control unit 20, a storage unit 21, a light source control unit 22, and an input. Operation means 23, notification means 24, temperature measurement means 25, fan control means 26, intake fan 27, exhaust fan 28, DVD fan 29, power supply terminal 30, power supply unit 31, audio signal processing means 40, speaker 41 (left speaker 41L) , Right speaker 41R), DVD reproducing means 50, etc., which are arranged inside or outside the housing 2.

  The image projection means 10 includes a light source 11, three liquid crystal light valves 12R, 12G, and 12B as light modulation devices, a projection lens 13 as a projection optical system, a liquid crystal drive means 14, and the like. The image projection means 10 modulates the light emitted from the light source 11 by the liquid crystal light valves 12R, 12G, and 12B, and projects the modulated image from the projection lens 13 to project the projected image on the projection surface such as the screen SC. indicate.

The light source 11 includes a discharge-type light source lamp 11a made of an ultra-high pressure mercury lamp, a metal halide lamp, or the like, and a reflector 11b that reflects light emitted from the light source lamp 11a toward the liquid crystal light valves 12R, 12G, and 12B. ing.
Light emitted from the light source 11 is converted into light having a substantially uniform luminance distribution by an integrator optical system (not shown), and red (R), green (G), and blue, which are the three primary colors of light, by a color separation optical system (not shown). After being separated into each color light component of (B), it enters the corresponding liquid crystal light valves 12R, 12G, 12B.

  The liquid crystal light valves 12R, 12G, and 12B are configured by a liquid crystal panel in which liquid crystal is sealed between a pair of transparent substrates. In the liquid crystal light valves 12R, 12G, and 12B, a plurality of pixels (not shown) arranged in a matrix are formed, and a driving voltage can be applied to the liquid crystal for each pixel.

When the liquid crystal driving unit 14 applies a driving voltage corresponding to input image data to each pixel, each pixel is set to a light transmittance corresponding to the image data. Therefore, the light emitted from the light source 11 is modulated by transmitting through the liquid crystal light valves 12R, 12G, and 12B, and image light corresponding to the image data is formed for each color light.
The formed image light of each color is synthesized for each pixel by a color synthesis optical system (not shown) to become color image light, and then enlarged and projected onto the screen SC or the like by the projection lens 13.

  In the present embodiment, the projector 1 that projects using the light source lamp 11a as the light source is exemplified, but the present invention can also be applied to a projector that projects using an LED (Light Emitting Diode) light source or a laser light source as the light source.

  In the present embodiment, the image projection means 10 is exemplified by a transmissive liquid crystal type projection optical system using three liquid crystal light valves 12R, 12G, and 12B, but a reflective liquid crystal display method or a micromirror device method ( A light modulation device of another display method such as a light switch display method may be employed.

  The control means 20 includes a CPU (Central Processing Unit) (not shown), a RAM (Random Access Memory) used for temporary storage of various data, and the like, according to a control program (not shown) stored in the storage means 21. By operating, the overall operation of the projector 1 is controlled. That is, the control unit 20 functions as a computer together with the storage unit 21.

  The storage means 21 is composed of a rewritable nonvolatile memory such as a flash memory or FeRAM (Ferroelectric RAM). The storage unit 21 stores a control program for controlling the operation of the projector 1, various setting data for defining operation conditions of the projector 1, and the like.

  The input operation means 23 includes a plurality of operation keys for the user to give various instructions to the projector 1. The operation keys provided in the input operation means 23 include a power key for switching on / off alternately, a playback key for starting playback of the DVD media M, and a stop for stopping playback of the DVD media M. There are a key, a tray opening / closing key for storing or ejecting the disc tray 58 on which the DVD medium M is placed. The operation keys include an input switching key for switching the image signal input source from the plurality of input terminals 6 and the DVD medium M, a menu key for superimposing a setting menu for performing various settings, and a user from the menu. There are a cursor key for selecting a setting item, a determination key for determining various settings, an escape key for returning the screen being set, and the like.

  When the user operates various operation keys of the input operation unit 23, the input operation unit 23 outputs an operation signal corresponding to the operation content of the user to the control unit 20. The input operation means 23 may include a remote controller (remote control) signal receiving means (not shown) and a remote controller (not shown) capable of remote operation. In this case, the remote controller emits an operation signal such as an infrared ray according to the operation content of the user, and the remote control signal receiving means receives it and transmits it to the control means 20 as control information.

  The light source control unit 22 controls supply and stop of power to the light source 11 based on an instruction from the control unit 20, and switches on and off the light source 11.

  The signal input means 18 receives an image signal (also referred to as image information) and an audio signal (from a plurality of input terminals 6 from an external image output device such as a video reproduction device or a personal computer via a cable or communication device (not shown). Also referred to as voice information). Also, image information and audio information are input from the DVD playback means 50. The input image signal and sound signal are output to the image signal processing means 17 and the sound signal processing means 40 based on an instruction from the control means 20.

  When the user operates the input switching key of the input operation means 23 and designates desired image information of the input terminal 6 or image information of the DVD medium M, the control means 20 causes the designated image information and audio information to be processed by image signal processing. The signal input means 18 is instructed to be output to the means 17 and the audio signal processing means 40. Note that the signal input unit 18 may include a receiving unit for wireless communication, optical communication, and the like, and may be configured to input a signal wirelessly from an external device.

The DVD reproducing means 50 reproduces image information and audio information recorded on the DVD medium M.
The DVD playback means 50 includes a tray transport means 52, a mounting sensor 53, a data reading means 54, a data processing means 55, a disk tray 58, and the like.

  The tray transport unit 52 corresponds to a transport unit. The tray transport unit 52 includes a transport roller for transporting the disc tray 58 on which the DVD medium M is placed, and a drive motor (none of which is shown) that rotates the transport roller, and is based on instructions from the control unit 20. Thus, the disc tray 58 is transported in the DVD reproducing means 50.

  Specifically, when the user operates the tray opening / closing key of the input operation unit 23 in a state where the disc tray 58 is stored in the housing 2 and the DVD medium M is not placed, the control unit 20 causes the tray conveyance unit 52 to operate. Is instructed to eject the disc tray 58 from the housing 2 (the state shown in FIG. 2A). Next, when the user places the DVD medium M on the disk tray 58 and operates the tray opening / closing key, the control means 20 instructs the tray transport means 52 to pull the disk tray 58 into the housing 2, The DVD medium M on the disc tray 58 is mounted on a turntable (not shown) (the state shown in FIG. 2C). When the user again operates the tray opening / closing key, the control means 20 instructs the tray transport means 52 to detach the DVD medium M from the turntable and eject the disk tray 58 from the housing 2. Let

  The exhaust shutter 9 closes the opening 3 when the disk tray 58 is housed inside the housing 2, and opens the opening 3 when a part of the disk tray 58 is discharged from the housing 2. (See FIGS. 2 and 3). The tray transport means 52 is moved between three states: a state in which the disk tray 58 is stored in the housing 2, a state in which the disc tray 58 is completely ejected from the housing 2, and a state in which a portion is ejected from the housing 2. It is like that.

  The mounting sensor 53 is arranged in the vicinity of the turntable, detects that the DVD medium M is mounted on the turntable, and notifies the control means 20.

  Based on an instruction from the control means 20, the data reading means 54 rotates the DVD medium M mounted on the turntable by a spindle motor (not shown) and scans an optical pickup (not shown). The data stream recorded on the DVD medium M is sequentially read. This data stream is information in which encoded image information and audio information are multiplexed, and the data stream read by the data reading unit 54 is sequentially output to the data processing unit 55.

  The data processing unit 55 includes a demultiplexer, a decoder, and the like. Based on an instruction from the control unit 20, the data processing unit 55 separates the data stream input from the data reading unit 54 into image information and audio information. A process of decoding (decoding) image information and audio information is performed.

  The data processing unit 55 outputs the decoded image information and audio information to the signal input unit 18. In this specification, the DVD reproduction means 50 reads a data stream from the DVD medium M and outputs image information and audio information based on the data stream. It is written as “Yes”.

  When receiving the operation of the reproduction key of the input operation unit 23, the control unit 20 instructs the DVD reproduction unit 50 to start the reproduction of the image information and the audio information, and accepts the operation of the stop key of the input operation unit 23. Then, the DVD reproducing means 50 is instructed to stop the reproduction of image information and audio information.

  The mounting sensor 53 can be configured using various detection means such as a mechanical switch, an optical sensor, and a magnetic sensor, for example. Further, the mounting sensor 53 may be configured to detect whether or not the DVD medium M is mounted based on the signal level of the reflected light received by the optical pickup described above.

  The image signal processing unit 17 converts the image signal input from the signal input unit 18 into image data representing the gradation of each pixel of the liquid crystal light valves 12R, 12G, and 12B based on an instruction from the control unit 20. Here, the converted image information is classified into red (R), green (G), and blue (B) color lights, and a plurality of pixels corresponding to all the pixels of the liquid crystal light valves 12R, 12G, and 12B. Consists of values. The pixel value defines the light transmittance of the corresponding pixel, and the intensity (gradation) of light transmitted through each pixel and emitted is defined by this pixel value.

  The OSD processing unit 16 performs processing for superimposing and displaying an OSD (on-screen display) image such as a menu image or a message image on the projection image based on an instruction from the control unit 20. The OSD processing unit 16 includes an OSD memory (not shown) and stores OSD image data representing graphics, fonts, and the like for forming an OSD image.

When the control means 20 instructs to superimpose the OSD image, the OSD processing means 16 reads the necessary OSD image data from the OSD memory, and outputs an image signal so that the OSD image is superimposed at a predetermined position on the projected image. The OSD image data is synthesized with the image data input from the processing means 17. The image data combined with the OSD image data is output to the liquid crystal driving means 14.
When there is no instruction to superimpose the OSD image from the control unit 20, the OSD processing unit 16 outputs the image data input from the image signal processing unit 17 to the liquid crystal driving unit 14 as it is.

  When the liquid crystal driving unit 14 drives the liquid crystal light valves 12R, 12G, and 12B according to the image data input from the OSD processing unit 16, image light corresponding to the image data is projected from the projection lens 13 and is projected onto the projection surface of the screen SC. A projected image is displayed.

  The audio signal processing unit 40 amplifies the audio information input from the signal input unit 18 based on an instruction from the control unit 20 and outputs the amplified audio information to the speaker 41.

  The speaker 41 is composed of a left and right pair of a left speaker 41L and a right speaker 41R, and outputs audio information input from the audio signal processing means 40 as audible information that can be heard by the user.

  The notification unit 24 includes an LED, a buzzer, and the like, and notifies various operation states of the projector 1 based on instructions from the control unit 20. In this embodiment, the notification means 24 notifies the state in which a part of the disc tray 58 is discharged, the exhaust shutter 9 opens the opening 3, and the DVD fan 29 is operating.

  The temperature measurement means 25 is composed of a thermistor or the like, measures the temperature of each part of the housing 2, and notifies the control means 20.

  The fan control unit 26 controls the rotation of the intake fan 27, the exhaust fan 28, and the DVD fan 29 based on an instruction from the control unit 20 to cool the inside of the housing 2. Specifically, the air taken in from the intake port 7 by the intake fan 27 is discharged from the exhaust port 8 and the opening 3 by the exhaust fan 28 and the DVD fan 29.

  The power supply unit 31 is supplied with electric power such as AC 100V from the outside via the power supply terminal 30. The power supply unit 31 converts input power (AC power) into predetermined DC power and supplies the power to each unit of the projector 1. In addition, the power supply unit 31 stops supplying power (operating power) necessary for image projection to each unit (power-on state) and operating power supply based on an instruction from the control unit 20. It is possible to switch between a state (standby state) of waiting for an operation for turning on.

Next, the operation of the projector 1 of the present embodiment will be described using the flowchart of FIG. FIG. 5 is a flowchart showing the temperature monitoring processing operation of the projector 1.
As shown in FIG. 5, when the temperature monitoring process of the projector 1 is started (step S100), the control unit 20 measures the temperature inside the housing 2 by the temperature measuring unit 25 (step S101). Next, based on the measured internal temperature, the fan control means 26 is instructed to control the rotation of the intake fan 27 and the exhaust fan 28 to cool the inside of the housing 2 (step S1011), and the process proceeds to step S102. To do. Step S101 corresponds to a temperature measurement step.

  In step S102, the control means 20 checks whether or not the temperature inside the housing 2 has exceeded a predetermined warning temperature. If the internal temperature exceeds the warning temperature (step S102: Y), the process proceeds to step S103. If the internal temperature does not exceed the warning temperature (step S102: N), the process proceeds to step S113. The warning temperature corresponds to the first temperature.

  In step S103, the control unit 20 instructs the DVD reproducing unit 50 to stop the reproduction of the DVD medium M, and the process proceeds to step S104.

  In step S <b> 104, the control unit 20 instructs the tray transport unit 52 to discharge a part of the disk tray 58 from the housing 2. As a result, the exhaust shutter 9 opens the opening 3. Next, the process proceeds to step S105. Step S104 corresponds to a transport step.

  In step S105, the control unit 20 instructs the fan control unit 26 to operate the DVD fan 29, and the process proceeds to step S106. Step S105 corresponds to a control step.

  In step S106, the control unit 20 uses the notification unit 24 to notify that the DVD fan 29 is operating and the periphery of the DVD medium M is being cooled, and the process proceeds to step S107.

  In step S107, the control means 20 measures the temperature inside the housing | casing 2 by the temperature measurement means 25, and changes to step S108.

  In step S108, the control means 20 checks whether or not the internal temperature is lower than a predetermined regeneration start temperature. If the internal temperature is lower than the regeneration start temperature (step S108: Y), the process proceeds to step S109. If the internal temperature is not lower than the regeneration start temperature (step S108: N), the process proceeds to step S107. The regeneration start temperature corresponds to the second temperature.

  In step S <b> 109, the control unit 20 instructs the tray transport unit 52 to store the disc tray 58 in the housing 2. As a result, the exhaust shutter 9 closes the opening 3. Next, the process proceeds to step S110. Step S109 corresponds to a transport step.

  In step S110, the control unit 20 instructs the fan control unit 26 to stop the DVD fan 29, and the process proceeds to step S111.

  In step S111, the control unit 20 ends the notification by the notification unit 24, and transitions to step S112.

  In step S112, the control unit 20 causes the DVD playback unit 50 to start playback of the DVD medium M, and proceeds to step S113.

  In step S113, the operation flow ends.

According to the embodiment described above, the following effects can be obtained.
According to the projector 1 of the present embodiment, when the temperature inside the housing 2 of the projector 1 rises, the disk tray 58 is partially ejected from the housing 2, and the exhaust shutter 9 opens the opening 3 in conjunction with it. In addition, since the air inside the housing 2 is discharged by the DVD fan 29 through the opened opening 3, the periphery of the DVD medium M is effectively cooled and the DVD medium M is prevented from being exposed to high temperatures. To do. Further, since only a part of the disc tray 58 is ejected, it is possible to prevent the ejected disc tray 58 from colliding with surrounding people and objects. Further, when the disc tray 58 is housed in the housing 2, the opening 3 is closed by the exhaust shutter 9, so that foreign matter can be prevented from entering the housing 2.

  Further, the notification unit 24 notifies when the DVD medium M is cooled by discharging the air inside the housing 2 of the projector 1 from the opening 3. In other words, since the temperature inside the housing 2 has exceeded the warning temperature (first temperature), the user is informed that the air inside the housing 2 has been exhausted from the opening 3, so that the user can Therefore, it is possible to call attention so as not to touch the hot air discharged from the opening 3.

  Further, when the temperature inside the housing 2 of the projector 1 becomes lower than a predetermined reproduction start temperature (second temperature), the disc tray 58 is housed in the housing 2 and the opening 3 is closed by the exhaust shutter 9. Therefore, it is possible to reproduce image information and audio information in the DVD medium M again. Further, it is possible to prevent the DVD medium M from being cooled more than necessary.

Moreover, you may change the said embodiment as follows.
(Modification 1)
In the above-described embodiment, the DVD medium M has been described as a storage medium. Anything can be accommodated.

  DESCRIPTION OF SYMBOLS 1 ... Projector, 2 ... Housing | casing, 3 ... Opening part, 6 ... Input terminal, 7 ... Intake port, 8 ... Exhaust port, 9 ... Exhaust shutter, 10 ... Image projection means, 11 ... Light source, 12R, 12G, 12B ... Liquid crystal light valve, 13 ... projection lens, 14 ... liquid crystal driving means, 16 ... OSD processing means, 17 ... image signal processing means, 18 ... signal input means, 20 ... control means, 21 ... storage means, 22 ... light source control means, DESCRIPTION OF SYMBOLS 23 ... Input operation means, 24 ... Notification means, 25 ... Temperature measurement means, 26 ... Fan control means, 27 ... Intake fan, 28 ... Exhaust fan, 29 ... DVD fan, 30 ... Power supply terminal, 31 ... Power supply part, 40 ... Audio signal processing means, 41L, 41R ... speaker, 50 ... DVD reproducing means, 52 ... tray conveying means, 53 ... mounting sensor, 54 ... data reading means, 55 ... data processing means, 58 ... dis Tray, SC ... screen.

Claims (4)

Image projection means for projecting projection light by modulating light emitted from a light source according to image information recorded in a storage medium, a storage medium storage section for storing the storage medium, and a casing for storing these A projector having
While exhausting the air inside the housing, the storage medium housing portion is stored in the housing or an opening that can be discharged from the housing;
In conjunction with the storage or discharge operation of the storage medium storage unit, when the storage medium storage unit is stored in the housing, the opening is closed, and a part of the storage medium storage unit is moved from the housing. An exhaust shutter that opens the opening when discharged,
Conveying means for storing or ejecting the storage medium accommodating portion in the casing;
Cooling means for discharging the air inside the housing from the opening;
Temperature measuring means for measuring the temperature inside the housing;
Control means for opening the opening by causing the transport means to discharge a part of the storage medium housing portion from the housing and operating the cooling means when the temperature exceeds the first temperature. When,
A projector characterized by comprising: The projector according to claim 1.
Informing means for informing that the cooling means is operating,
A projector further comprising: The projector according to claim 1 or 2,
The control means stops the operation of the cooling means when the temperature becomes lower than the second temperature, and stores the storage medium accommodating portion in the casing by the conveying means, thereby opening the opening portion. A projector characterized by closing the door. An opening provided in the housing, a storage medium housing portion that can be housed in or discharged from the housing from the opening, and image information recorded in the storage medium housed in the storage medium housing portion In accordance with the image projection means for modulating the light emitted from the light source and projecting the projection light, the exhaust shutter for closing or opening the opening in conjunction with the storage or discharge operation of the storage medium storage portion, A cooling means for discharging the air inside the housing from the opening, and a control method for the projector,
A temperature measurement step for measuring the temperature inside the housing;
A transporting step for storing or ejecting the storage medium housing part in the housing;
When the temperature measurement step detects that the temperature has exceeded the first temperature, the conveyance step causes the storage medium housing portion to be partially discharged from the housing to open the opening. And a control step for operating the cooling means;
A projector control method characterized by comprising:

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