JP5120340B2 - Projection apparatus, operation control method and program for projection apparatus - Google Patents

Description

  The present invention relates to a projection apparatus suitable for a projector apparatus that uses a light source lamp such as a high-pressure mercury lamp, an operation control method for the projection apparatus, and a program.

  At the end of projection, a projector that performs after-cooling is considered to reduce the temperature of a lamp serving as a light source to a predetermined temperature set in advance. (For example, Patent Document 1)

JP 2005-156750 A

  After the projection is completed, after-projection is automatically performed for a predetermined time after the projection is completed. In order to finish the after-cooling in as short a time as possible, the cooling fan speed is increased to increase the speed. It is often configured to allow cooling.

  However, in an actual projector usage environment, there may be a case where a discussion, additional explanation, or the like is performed by attendees after the projection operation by the projector ends. In such a case, if the projector is rapidly cooled for after-cooling, noise from the cooling fan may increase and hinder discussions and the like.

  The present invention has been made in view of the above circumstances, and its object is a projection apparatus capable of performing after-cooling after a projection operation with an appropriate cooling capacity corresponding to the use environment, To provide an operation control method and program.

The invention according to claim 1 cools a light source using a lamp, an image signal input from the outside of the apparatus and a projection unit that forms and projects a light image by light from the light source, and a lamp of the light source. a variable capable of cooling means the cooling capacity, and instruction means for instructing the lighting end of the lamp, and determination means for determining whether the signal input from outside the device, the determination at the instructions of the lighting end of the above indicated means Selection means for selecting the cooling capacity of the cooling means according to the determination result of the means, and cooling control means for cooling the lamp of the light source by the cooling means with the cooling capacity selected by the selection means. Features.

The invention according to claim 5 is a cooling capacity for cooling a light source using a lamp, an image signal inputted from outside the apparatus, and a light image by light from the light source to cool the projection unit and the lamp of the light source. An operation control method of the projection apparatus including a variable cooling unit, an instruction process for instructing the end of lighting of the lamp of the apparatus, a determination process for determining the presence or absence of a signal input from the outside of the apparatus , A selection step of selecting the cooling capacity of the cooling unit according to the determination result of the determination step when instructing the end of lighting in the instruction step, and the lamp of the light source by the cooling unit with the cooling capacity selected in the selection step And a cooling control step for cooling.

The invention according to claim 6 is a cooling capacity for cooling the light source using the lamp, the image signal input from the outside of the apparatus and the light from the light source to form a light image, and the lamp of the light source. Is a program executed by a computer incorporated in a projection apparatus having a variable cooling unit, and an instruction step for instructing the end of lighting of the lamp of the apparatus and the presence / absence of a signal input from the outside of the apparatus A selection step for selecting the cooling capacity of the cooling unit according to the determination result of the determination step when the lighting end instruction is given in the instruction step, and the cooling unit selected by the cooling unit with the cooling capacity selected in the selection step. And a cooling control step for cooling the lamp of the light source.

  According to the present invention, it is possible to perform after-cooling after the projection operation with an appropriate cooling capacity corresponding to the use environment.

1 is a block diagram showing a circuit configuration of a projector device according to a first embodiment of the present invention. The figure which illustrates the structure of the key switch part of the projector apparatus which concerns on the same embodiment. The flowchart which shows the processing content at the time of the power-off which concerns on the embodiment. 10 is a flowchart showing processing details when the projector apparatus according to the second embodiment of the present invention is powered off. 10 is a flowchart showing processing contents when a projector apparatus according to a third embodiment of the present invention is powered off.

(First embodiment)
A first embodiment in which the present invention is applied to a DLP (Digital Light Processing) (registered trademark) projector will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a functional configuration of an electronic circuit of the projector device 10 according to the embodiment.
In the figure, reference numeral 11 denotes an input / output connector section, which comprises, for example, a pin jack (RCA) type video input terminal, RGB input terminal, and USB terminal.

  Image signals of various standards input from the input / output connector unit 11 are unified into image signals of a predetermined format by the image conversion unit 13 via the input / output interface (I / F) 12 and the system bus SB, and then projected. It is sent to the drive unit 14.

  At this time, the OSD (On Screen Display) mode image and symbols such as a pointer are also sent to the projection drive unit 14 in a state of being superimposed on the image signal as necessary.

  The projection drive unit 14 develops and stores the transmitted image signal in the video RAM 15, and then generates a video signal from the stored contents of the video RAM 15. The projection driving unit 14 multiplies the frame rate of the video signal, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations, to perform a spatial light modulation element ( For example, the micromirror element 16 which is SOM) is driven to display.

  On the other hand, a light source lamp 18 using, for example, an ultra-high pressure mercury lamp disposed in the reflector 17 emits white light with high luminance. The white light emitted from the light source lamp 18 is colored into primary colors in a time-sharing manner through the color wheel 19, and is converted into a luminous flux having a uniform luminance distribution by the integrator 20, then totally reflected by the mirror 21 and reflected on the micromirror element 16. Irradiated.

  Thus, an optical image is formed by the reflected light from the micromirror element 16, and the formed optical image is projected and displayed via the optical lens unit 22 on a screen (not shown) to be projected.

  The optical lens unit 22 enlarges and projects the optical image formed by the micromirror element 16 onto a target such as a screen, and the focus position and the zoom position (projection angle of view) can be arbitrarily changed. .

  That is, the focus lens and the zoom lens (not shown) in the optical lens unit 22 are controlled by moving back and forth along the optical axis direction, and these lenses are moved by the rotational drive of the stepping motor (M) 23. To do.

  A cooling fan 24 for cooling the light source lamp 18 is rotationally driven by a motor (M) 25. Further, a motor (M) 26 for rotating the color wheel 19 is provided.

  However, the light source lamp 18 is turned on, the motor 26 for the color wheel 19 is rotated, the motor 25 for the cooling fan 24 is rotated, and the stepping motor 23 is rotated. Will run.

  The projection light processing unit 27 also receives temperature data from a temperature sensor 28 that is attached to the reflector 17 and detects the temperature of the light source lamp 18.

  The CPU 29 controls all the operations of the above circuits. The CPU 29 executes a control operation in the projector apparatus 10 by using a program memory 30 that is a non-volatile memory that stores an operation program, various fixed data, and the like, and a main memory 31 that is a RAM.

  The CPU 29 is further connected to a key switch unit 32, an indicator unit 33, and an audio processing unit 34 via the system bus SB.

  FIG. 2 illustrates the configuration of the key switch unit 32 disposed on, for example, the upper surface of the housing of the projector device 10. Here, the key switch unit 32 includes a power key 32a, a rapid power off key 32b, a “Mode” key 32c, a cancel (C) key 32d, focus keys 32e and 32f, zoom keys 32g and 32h, cursors (“↑”, “↓”, “ ← "" → ") keys 32i to 32l, an enter key 32m, and the like.

  The power key 32a instructs on / off of the power. The rapid power-off key 32b instructs to turn off the power accompanied by after-cooling by rapid cooling described later. The “Mode” key 32c instructs various operation modes.

  The cancel key 32d instructs to cancel the item selected at that time, move to a higher menu layer, or the like. The focus keys 32e and 32f instruct to move the focus position in the front and rear directions.

  The zoom keys 32g and 32h instruct to enlarge or reduce the zoom angle of view. The cursor keys 32i to 32l instruct to move the item currently selected. The enter key 32m instructs determination of an item selected at that time.

  When the user performs an arbitrary operation using each key of the key switch unit 32, an operation signal corresponding to the key operation is input to the CPU 29, and the CPU 29 executes a control operation according to the input from the key switch unit 32. To do.

  The indicator unit 33 is composed of, for example, a plurality of LEDs, and displays various operating states, temperature abnormalities of the light source lamp 18 and the like by lighting colors and blinking patterns.

  The sound processing unit 34 includes a sound source circuit such as a PCM sound source, converts the sound data given at the time of the projection operation into an analog signal, drives a speaker 35 provided, for example, on the back surface of the main body casing of the projector device 10 to emit a loud sound, Alternatively, a beep sound or the like is generated as necessary.

Next, the operation of the above embodiment will be described.
FIG. 3 is a flowchart showing the processing contents when the power-off is instructed by operating the power key 32a or the rapid power-off key 32b of the key switch unit 32 from the power-on state. Note that the processing of FIG. 3 is operation control that is executed mainly by the CPU 29 via the projection light processing unit 27 based on the operation program stored in the program memory 30.

  At the beginning of the process, the light source lamp 18 is first turned off and turned off (step A01), and then the rapid cooling is performed depending on whether or not the power-off instruction is made by operating the rapid power-off key 32b. It is determined whether or not it is necessary to perform (step A02).

  If it is determined that the instruction is an operation by operating the rapid power off key 32b, for example, when the rotational drive speed of the motor 25 is in three stages of “high”, “medium”, and “low”, the highest “high” is set. Thus, a rapid cooling state is realized (step A03).

  In this rapid cooling state, the light source lamp 18 is cooled to such an extent that the rapid cooling is completed by determining whether or not the temperature of the light source lamp 18 is equal to or lower than a preset threshold value Tth by the temperature detected from the temperature sensor 28. By repeatedly determining whether or not the rapid cooling state is finished, the process waits for completion of the rapid cooling state (step A04).

  On the other hand, if it is determined in step A02 that the power-off instruction is not the operation of the normal power key 32a but the operation of the quick power-off key 32b, for example, the rotational drive speed of the motor 25 is “high” “medium”. When there are three stages of “low”, it is set to “medium” to realize a cooling state by normal after-cooling (step A05).

  By determining whether or not the temperature of the light source lamp 18 is equal to or lower than a preset threshold value Tth in this normal cooling state based on the temperature detected from the temperature sensor 28, the light source lamp 18 can be used to the extent that the normal cooling is completed. By repeatedly determining whether or not it has been cooled, it waits for the normal cooling state to end (step A06).

  Then, when it is determined in step A03 or A05 that the temperature of the light source lamp 18 has become equal to or lower than a preset threshold value Tth, the after cooling operation by rapid cooling or normal cooling is finished, and the motor 25 and the cooling fan 24 are used. After stopping the cooling operation (step A07), all the operations in the projector device 10 including the display on the indicator unit 33 and the sound emission operation on the sound processing unit 34 are stopped (step A08). The process of FIG. 3 is completed.

  Thus, according to the above-described embodiment, it is possible to perform after-cooling after the projection operation with an appropriate cooling capacity corresponding to the use environment.

  In addition, in the above-described embodiment, whether or not the user of the projector device 10 performs the rapid cooling when the power is turned off according to whether the user operates the rapid power off key 32b of the key switch unit 32 or the power key 32a. Since the user's will is reliably reflected, the quick cooling state is mistakenly set, and the question and answer session or discussion after the presentation is disturbed by noise. It can be avoided reliably.

  In the above embodiment, whether or not to perform rapid cooling is selected by operating one of the power key 32a and the rapid power off key 32b of the key switch unit 32. In particular, the key switch unit is selected. Even if a dedicated operation key such as the rapid power-off key 32b is not provided in 32, for example, when the power key 32a is pressed for 2 seconds or longer, rapid cooling is performed instead of normal cooling. Also, the cooling operation can be selected.

  In the above embodiment, whether or not to perform rapid cooling is selected depending on whether the user operates the rapid power off key 32b or the power key 32a of the key switch unit 32 after the projection operation. The embodiment is not limited to this, and it is assumed that the rapid power-off key 32b does not exist in the key switch unit 32, and whether or not the light source lamp 18 is rapidly cooled after the projection operation by setting the mode in advance before the projection operation is started. It may be selected and set, and when the power is turned off by the operation of the power key 32a, it is possible to select whether or not to perform rapid cooling based on the previously set contents.

  By setting in advance whether or not to perform rapid cooling in advance of the projection operation, after the projection operation, the cooling operation suitable for the situation is automatically selected by the same key operation, after the projection operation. It becomes possible to carry out after-cooling.

(Second Embodiment)
A second embodiment in which the present invention is applied to a DLP (registered trademark) projector device will be described below with reference to the drawings.

  The functional configuration of the electronic circuit of the projector device 10 according to the embodiment is basically the same as that shown in FIG. 1, and the same parts are denoted by the same reference numerals. The description is omitted.

  The specific configuration example of the key switch unit 32 is the same as that shown in FIG. 2 except that the quick power-off key 32b does not exist.

Next, the operation of the above embodiment will be described.
FIG. 4 is a flowchart showing the processing contents when the power-off is instructed by operating the power key 32a of the key switch unit 32 from the power-on state. Note that the processing of FIG. 3 is operation control in which the CPU 29 executes the projection light processing unit 27 around the control target based on the operation program stored in the program memory 30.

  At the beginning of the process, first, the lighting drive of the light source lamp 18 is stopped and extinguished (step B01), and at that time, it is determined whether or not an image signal is input via the input / output connector unit 11 (step B01). Step B02).

  If it is determined that no image signal is input, the power supply on the external device side already connected to the input / output connector unit 11 is also turned off at that time, and the projector device 10 is immediately withdrawn. For example, when the rotational drive speed of the motor 25 has three stages of “high”, “medium”, and “low”, the fast cooling state is realized by setting the highest “high” (step B03). ).

  In this rapid cooling state, the light source lamp 18 is cooled to such an extent that the rapid cooling is completed by determining whether or not the temperature of the light source lamp 18 is equal to or lower than a preset threshold value Tth by the temperature detected from the temperature sensor 28. By repeatedly determining whether or not the rapid cooling state is finished, the system waits for the end of the rapid cooling state (step B04).

  On the other hand, if the image signal is still input through the input / output connector unit 11 in step B02 and the power supply on the external device connected to the input / output connector unit 11 is turned on at that time, For the time being, there is no possibility that the projector device 10 is withdrawn immediately. For example, when the rotational drive speed of the motor 25 is three stages of “high”, “medium”, and “low”, it is set to “medium” and the normal after sales A cooling state by cooling is realized (step B05).

  By determining whether or not the temperature of the light source lamp 18 is equal to or lower than a preset threshold value Tth in this normal cooling state based on the temperature detected from the temperature sensor 28, the light source lamp 18 can be used to the extent that the normal cooling is completed. By repeatedly determining whether or not it has been cooled, it waits for the normal cooling state to end (step B06).

  When it is determined in step B03 or B05 that the temperature of the light source lamp 18 has become equal to or lower than a preset threshold value Tth, it is determined that the after cooling operation by the rapid cooling or the normal cooling is finished, and the motor 25 and the cooling fan 24 are used. After stopping the cooling operation (step B07), all the operations in the projector device 10 including the display on the indicator unit 33 and the sound emitting operation on the sound processing unit 34 are stopped (step B08). The process of FIG. 4 is completed.

  As described above, according to the above-described embodiment, whether or not to perform rapid cooling when the power is turned off is selected based on the presence / absence of an image signal supplied from the outside of the apparatus, so that the input of the image signal has already been interrupted. Only when it is judged automatically, the system goes to rapid cooling, and rapid cooling is not performed while the image signal continues to be input. It is possible to surely avoid situations that would hinder it.

(Third embodiment)
A third embodiment when the present invention is applied to a DLP (registered trademark) projector device will be described below with reference to the drawings.

  The functional configuration of the electronic circuit of the projector device 10 according to the embodiment is basically the same as that shown in FIG. 1, and the same parts are denoted by the same reference numerals. The description is omitted.

  The specific configuration example of the key switch unit 32 is the same as that shown in FIG. 2 except that the quick power-off key 32b does not exist.

Next, the operation of the above embodiment will be described.
FIG. 5 is a flowchart showing the processing contents when the power-off is instructed by operating the power key 32a or the rapid power-off key 32b of the key switch unit 32 from the power-on state. Note that the processing of FIG. 3 is operation control that is executed mainly by the CPU 29 via the projection light processing unit 27 based on the operation program stored in the program memory 30.

  At the beginning of the process, first, the lighting drive of the light source lamp 18 is stopped and extinguished (step C01), and at that time, it is determined whether or not an external device is connected to the input / output connector unit 11 (step C02). ).

  This is determined based on whether or not each terminal is in an open state based on the terminal impedance level of each input / output terminal constituting the input / output connector section 11, and there is no connection of an external device to the input / output connector section 11. If it is determined, for example, when the rotational drive speed of the motor 25 is in three stages of “high”, “medium”, and “low”, the fast cooling state is realized by setting the highest “high” (step C03). .

  In this rapid cooling state, the light source lamp 18 is cooled to such an extent that the rapid cooling is completed by determining whether or not the temperature of the light source lamp 18 is equal to or lower than a preset threshold value Tth by the temperature detected from the temperature sensor 28. Whether or not the rapid cooling state is finished is awaited by repeatedly determining whether or not (step C04).

  On the other hand, if it is determined in step C02 that any of the terminals constituting the input / output connector unit 11 is still connected to an external device, for example, the rotational drive speed of the motor 25 is “high”, “medium”, “low”. ”Is set to“ medium ”to realize a cooling state by normal after-cooling (step C05).

  By determining whether or not the temperature of the light source lamp 18 is equal to or lower than a preset threshold value Tth in this normal cooling state based on the temperature detected from the temperature sensor 28, the light source lamp 18 can be used to the extent that the normal cooling is completed. By repeatedly determining whether or not it has been cooled, it waits for the normal cooling state to end (step C06).

  When it is determined in step C03 or C05 that the temperature of the light source lamp 18 has become equal to or lower than a preset threshold value Tth, it is determined that the after-cooling operation by rapid cooling or normal cooling has been completed. After the cooling operation is stopped (step C07), all the operations in the projector device 10 including the display on the indicator unit 33 and the sound emission operation on the sound processing unit 34 are stopped (step C08). The process of FIG. 5 is completed.

  As described above, according to the above-described embodiment, whether or not to perform rapid cooling when the power is turned off is selected based on whether or not an external device is connected to the input / output connector unit 11, so that the connection has already been released. It will be judged automatically only in the state, and it will shift to rapid cooling, and rapid cooling will not be performed while it is still connected, so for example, the question and answer and discussion after the presentation will be hindered by the noise of rapid cooling It is possible to reliably avoid such a situation.

  In the above-described embodiment, the connection state in the input / output connector unit 11 is determined based on whether or not the terminals are all open from the terminal impedance level of each input / output terminal constituting the input / output connector unit 11. Although described, it is possible to use other known electrical connection detection means or mechanical connection detection means without adopting such an electrical connection detection means, and the present invention detects those connection detections. It does not limit the content of the instrumental situation.

  In each of the first to third embodiments, the case where the end of the rapid cooling and the normal cooling is determined based on whether or not the temperature at the light source lamp 18 is equal to or lower than the threshold value Tth has been described. In order to determine the end, the temperature of the light source lamp 18 is not detected by using the temperature sensor 28, but the timer formed in the CPU 29 indicates that the time set individually for the rapid cooling and the normal cooling elapses. It is also possible to adopt a configuration that counts.

  Furthermore, although the first to third embodiments have been described with respect to the case where the projector apparatus 10 is applied to a DLP (registered trademark) projector apparatus, the present invention limits the projector system as a projection apparatus. For example, a liquid crystal projector device that performs a projection operation using a transmissive color liquid crystal panel as a display element, a monochrome overhead projector (OHP), a slide projector, etc. Any projection apparatus that needs an after-cooling operation for cooling can be similarly applied.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the functions executed in the above-described embodiments may be implemented in appropriate combination as much as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination according to a plurality of disclosed structural requirements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the embodiment, if an effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

  DESCRIPTION OF SYMBOLS 10 ... Projector apparatus, 11 ... Input / output connector part, 12 ... Input / output interface (I / F), 13 ... Image conversion part, 14 ... Projection drive part, 15 ... Video RAM, 16 ... Micromirror element, 17 ... Reflector, DESCRIPTION OF SYMBOLS 18 ... Light source lamp, 19 ... Color wheel, 20 ... Integrator, 21 ... Mirror, 22 ... Optical lens unit, 23 ... Stepping motor (M), 24 ... Cooling fan, 25 ... Motor (M), 26 ... Motor (M) 27 ... Projection light processing unit, 28 ... Temperature sensor, 29 ... CPU, 30 ... Program memory, 31 ... Main memory, 32 ... Key switch unit, 33 ... Indicator unit, 34 ... Audio processing unit, 35 ... Speaker, SB ... System bus.

Claims (5)

A light source using a lamp;
Projection means for forming and projecting an optical image from an image signal input from outside the apparatus and light from the light source, and
A cooling means for cooling the lamp of the light source, the cooling capacity being variable;
Key switch means for instructing the end of lighting of the lamp;
A determination means for determining the presence or absence of a signal input from outside the device;
A selection means for selecting the cooling capacity of the cooling means according to the determination result of the determination means when the lighting switch is instructed by the key switch means;
And a cooling control means for cooling the lamp of the light source by the cooling means with the cooling capacity selected by the selection means. The projection apparatus according to claim 1, wherein the selection unit selects the highest cooling capacity of the cooling unit when the determination unit detects that there is no signal input from outside the apparatus. The said selection means selects the cooling capacity other than the highest cooling capacity of the said cooling means, when it is detected that there is a signal input from the outside of the apparatus by the determination means. Projection device. A light source using a lamp, an image signal input from the outside of the apparatus and light from the light source to form a light image, a projection unit, and a cooling unit that cools the lamp of the light source and has a variable cooling capacity An operation control method for a projection apparatus comprising:
An instruction process for instructing the end of lighting of the lamp of the device;
A determination step of determining the presence or absence of a signal input from outside the device;
A selection step of selecting the cooling capacity of the cooling unit according to the determination result of the determination step when instructing the end of lighting in the instruction step;
And a cooling control step of cooling the lamp of the light source by the cooling section with the cooling capacity selected in the selection step. A light source using a lamp, an image signal input from the outside of the apparatus and light from the light source to form a light image, a projection unit, and a cooling unit that cools the lamp of the light source and has a variable cooling capacity A program executed by a computer built in the projection apparatus provided,
An instruction step for instructing the end of lighting of the lamp of the device;
A determination step of determining the presence or absence of a signal input from outside the device;
A selection step of selecting the cooling capacity of the cooling unit according to the determination result of the determination step when instructing the end of lighting in the instruction step;
And a cooling control step of causing the cooling unit to cool the lamp of the light source with the cooling capacity selected in the selection step.

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