JP2011101260A - Projector type video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector type video display device which easily executes continuous OSD display for information related to the life of a light source lamp. <P>SOLUTION: The projector type video display device performs video signal processing for input video signals, modulates illumination right irradiated from a light source lamp based on video signals which are video-signal-processed, and displays main video. In addition, OSD display data for notifying information related to the life of the light source lamp is inputted in an operation portion, and based on the inputted OSD display data, information related to the life of the light source lamp is OSD-displayed as sub video. Furthermore, the sub video is structured so as to be continuously displayed, and transparently displayed so that background main video is visually identified. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a projection display apparatus, and more particularly to a projection display apparatus that displays information on the life of a light source lamp on a screen.

  In general, a projection display device (projector) that projects an image on a screen modulates light from a light source lamp with a light modulation device such as a liquid crystal panel, and displays the image by projecting the modulated light onto a screen. is doing. By the way, in such a projection display apparatus, the life of the light source lamp used for the light source is governed by the accumulated lighting time of the light source lamp. Also, if the accumulated lighting time of the light source lamp approaches the life of the light source lamp or exceeds the life of the light source lamp, there is a high possibility that the light source lamp will become unusable due to deterioration or failure of the lamp characteristics. Decreases. For this reason, the light source lamp needs to be replaced when the life of the light source lamp is reached. Further, in the projection display apparatus, an informing means for informing information on the life of the light source lamp has been developed.

  As such notification means, there are a notification means by voice, a notification means by a display element such as an LED provided in a housing or the like, a notification means by an on-screen display (hereinafter referred to as OSD display), and the like. Examples of voice notification means include those described in Patent Documents 1 and 2. Moreover, as an alerting | reporting means by display elements, such as LED, there exist a thing of patent documents 3 and 4, for example. Further, as notification means by OSD display, for example, there are those described in Patent Documents 5 and 6. Note that OSD display is generally a technique for superimposing and displaying sub-pictures such as telops, subtitles, and setting menus on a part of a main video to be originally displayed. In addition, regarding such OSD display, a technique for transparently displaying a sub-picture as in Patent Documents 7 and 8 is also known.

JP 2000-292857 A JP 2007-65403 A JP 2005-85629 A JP 2007-79089 A JP-A-10-191192 JP 2002-287243 A JP 2004-7238 A JP 2007-132984 A

However, such a notification means has the following problems.
If the voice notification means continuously outputs voice, it becomes noise and gives unpleasant feeling, so it must be temporarily output. However, in temporary audio output, in an application field such as digital signage, the manager and the maintenance staff are not always watching, and there is a concern that the timing of replacing the light source lamp may be missed.

  Moreover, the notification means by display elements, such as LED, needs to look at the display part attached to the housing | casing. However, in the field of digital signage, a projection display apparatus may be housed in a decorative case, and during display, the case cannot be opened and the display element cannot be confirmed. Even in this case, there is a concern that the light source lamp replacement time may be missed.

  Further, the notification means by OSD display is displayed as a sub-video so as to be superimposed on the main video, and thus has an advantage that it is easily noticeable to the viewer. However, the notification means by OSD display has a problem that when one light source lamp is used, it cannot be displayed if the light source lamp is cut off. For this reason, it is considered necessary to make the OSD display function work from an early stage and to flow information on the life of the light source lamp continuously and in the long term. However, the conventional notification means by OSD display lacks consideration for preventing the viewing of the main video as much as possible. For example, since the main video of the portion where the OSD display is overlaid cannot be seen, there is a risk of discomfort to the viewer if the display is performed continuously and for a long time.

  In view of such circumstances, it is an object of the present invention to provide a projection display apparatus that facilitates continuous OSD display of information relating to the life of a light source lamp.

  The projection video display apparatus according to the present invention performs video signal processing on an input video signal, modulates illumination light from a light source lamp based on the video signal processed, and displays a main video. OSD display data for reporting information on the life of the light source lamp is input in the operation unit, and information on the life of the light source lamp is OSD-displayed as a sub-image based on the input OSD display data. The sub-video is configured to be continuously displayed and is transparently displayed so that the main video in the background can be visually recognized.

  According to this configuration, since the information on the life of the light source lamp is continuously OSD displayed as a sub-picture, the life information on the light source lamp is continuously given to the viewer or the manager in advance before the life of the light source lamp comes. And it can be notified for a long time. Therefore, it is possible to prevent the viewer or manager from overlooking information on the life of the light source lamp. In addition, since the sub-picture about the information on the life of the light source lamp is transmitted and displayed, it is possible to achieve both the sub-picture display and the main picture display over a long period of time.

  Further, it is preferable that the OSD display data includes an item for setting the transparency of the sub-picture between 0 and 100 stepwise or steplessly. With this configuration, the transmittance according to the viewer's desire can be obtained, so that it is easy to display both the sub-video and the main video.

  The OSD display data preferably includes an item for turning on / off the display of the sub-picture. In this way, it is possible to display a sub-picture at a time desired by the user, such as when the light source lamp is nearing the end of its life or when the user is concerned about the life of the light source lamp.

  The OSD display data includes contents for informing whether or not the light source lamp needs to be replaced. The notification of the necessity for replacing the lamp indicates the life of the light source lamp and the lamp lighting input in advance in the storage unit. It is preferable to determine from the accumulated time. Various display items relating to the life of the light source lamp are conceivable, but it is most necessary to replace the light source lamp.

  The sub-picture may include a display indicating the state of the light source lamp by characters. If it does in this way, the information regarding the lifetime of a light source lamp can be expressed and expressed easily.

  The sub-picture may include a display indicating a state of the light source lamp by a symbol. In this way, information on the life of the light source lamp can be easily notified using a narrow space, so that it is easy to achieve compatibility with the main video.

  In addition, the sub-picture may include a display in which the periphery of the main picture is clouded to make it look like a frame when the light source lamp needs to be replaced. If it does in this way, the information regarding the lifetime of a light source lamp can be alert | reported with the simple form which does not inhibit viewing of a main image | video.

  The sub-picture may include a display indicating a remaining time until the light source lamp reaches the end of its life. In this way, the replacement time of the light source lamp is notified in advance, so that the user can be urged to prepare early.

  The number of the light source lamps is one, and the OSD display data and the sub-picture may be related to the one light source lamp. In this way, the present invention can be applied to a projection display apparatus that uses one light source lamp.

  A plurality of the light source lamps may be provided, and the OSD display data and the sub-picture may be related to the plurality of light source lamps. In this way, the present invention can be applied to a projection display apparatus that uses a plurality of light source lamps.

  In the OSD display data, it is selected whether to perform the scroll display in which the sub-pictures relating to the plurality of light source lamps are sequentially OSD-displayed for each light source lamp or to collectively display all the light source lamps without performing the scroll display. Preferably, items are included. With this configuration, when all the light source lamps are collectively displayed, information on the lifetimes of all the light source lamps can be viewed at a time, but the display space for the sub-video becomes large and obstructs viewing of the main video. Therefore, it becomes difficult to achieve both the main video and the sub video. On the other hand, when the scroll display is selected, the display space for the sub video is reduced, so that it is easy to achieve both the main video and the sub video.

  Further, it is preferable that the scroll display omits display of a light source lamp that has not reached the end of its life and can be normally lit. By doing so, the display of the sub-picture is simplified.

  The OSD display data preferably includes a scroll cycle in the scroll display. In this way, since scroll display can be performed at a cycle according to the user's request, scroll display becomes easy to see.

  According to the projection display apparatus according to the present invention, information on the life of the light source lamp is continuously OSD displayed as a sub-picture, so that the viewer can operate by using the OSD display function before the light source lamp reaches its end of life. Alternatively, it is possible to notify the manager of the lifetime information of the light source lamp continuously and in the long term. Therefore, it is possible to prevent the viewer or manager from overlooking information on the life of the light source lamp. Further, since the sub-video is displayed in a transparent manner, it is possible to achieve both the sub-video display and the main video display over a long period of time.

It is a functional block diagram which shows schematic structure of the projection type video display apparatus concerning Embodiment 1 of this invention. It is a figure explaining the user menu for OSD display in the projection type video display apparatus. It is a figure which shows the OSD display data input screen in the projection type video display apparatus. It is a figure explaining the OSD display data memorize | stored in a memory | storage part in the projection type video display apparatus. It is a figure explaining the information regarding the lifetime of the light source lamp memorize | stored in a memory | storage part in the same projection type video display apparatus. It is a flowchart regarding OSD display in the same projection type video display device. It is a figure explaining the example of the OSD display screen in the projection type video display apparatus. It is a figure explaining the example of the other OSD display screen in the projection type video display apparatus. It is a functional block diagram which shows schematic structure of the projection type video display apparatus concerning Embodiment 2 of this invention. It is a figure explaining the user menu for OSD display in the projection type video display apparatus. It is a figure explaining the OSD display data memorize | stored in a memory | storage part in the projection type video display apparatus. It is a figure explaining the information regarding the lifetime of the light source lamp memorize | stored in a memory | storage part in the same projection type video display apparatus. It is a flowchart regarding OSD display in the same projection type video display device. It is explanatory drawing of the scroll display in the projection type video display apparatus.

(Embodiment 1)
First, a schematic configuration of a three-plate liquid crystal projection display apparatus that is a projection display apparatus according to an embodiment of the present invention will be described with reference to FIG.

  This projection type video display apparatus includes a video signal input unit 11, a video signal processing unit 12, an OSD processing unit 13, a liquid crystal panel driving unit 14, a liquid crystal panel 15, a lamp power source unit 16, and a light source as elements for generating a video. A lamp 17 is provided. In addition, an operation unit 21, a time measurement unit 22, and a storage unit 23 are provided for OSD display of information relating to the life of the light source lamp. Further, the projection display apparatus includes a control unit 24 and a power supply unit 25 for performing the operation of the entire apparatus.

  The video signal input unit 11 receives main video signals from various video playback devices via the input terminal 11a. Also, the video signal input unit 11 has an analog I / F, a digital I / F, and a video I / F so as to be compatible with various video signals from various video playback devices such as an analog PC, digital PC, video, and television. An input interface is provided. The main video signal input to the video signal input unit 11 is subjected to appropriate processing such as A / D conversion and decoding, converted into a digital signal, and output to the video signal processing unit 12.

  The video signal processing unit 12 performs general video processing such as scaling processing, gamma correction, and luminance correction on the input main video signal, and the main video signal subjected to such processing is the OSD processing unit 13. Is output.

  The OSD processing unit 13 generates a sub-video signal based on the OSD display data output from the control unit 24 when the “lamp replacement flag” transmitted from the control unit 24 described later is 1, and performs video signal processing. The sub video is combined with the main video signal input from the unit 12 so as to be displayed in a transparent manner. Then, the composite video signal is output to the liquid crystal panel driving unit 14. When a “lamp replacement flag” transmitted from the control unit 24 described later is 0, there is no need for lamp replacement and no sub-video signal is generated, and only the main video signal is output to the liquid crystal panel driving unit 14. The

  In the liquid crystal panel driving unit 14, the composite video signal input from the OSD processing unit 13 is converted into a signal form that can drive the liquid crystal panel 15 including the liquid crystal panels for green light, red light, and blue light. The Further, in the liquid crystal panel driving unit 14, drive pulses for driving the liquid crystal panels 15 for green light, red light, and blue light are simultaneously generated.

  The liquid crystal panel 15 has a rotation angle corresponding to the input video signal, and creates an image by transmitting light from a separation optical system (not shown). The display image is formed on a screen or the like at a predetermined distance by a projection optical system (not shown).

  The lamp power supply unit 16 is supplied with power from the power supply unit 25 and generates a high voltage to turn on the light source lamp 17 to form a discharge circuit, and to maintain a stable lighting state after lighting. And the ballast circuit. In the lamp power supply unit 16, the lighting state and the extinguishing state of the light source lamp 17 are detected and transmitted to the control unit 24.

  As the light source lamp 17, a discharge lamp such as an ultra-high pressure mercury lamp or a metal halide lamp is used as a light emitter, and light emitted from the light emitter is converted into parallel light by a reflector and emitted in the axial direction of the light emitter. It is comprised so that. In this embodiment, the number of light source lamps 17 used is one.

  To further explain the item, “continuation of OSD display” sets whether or not continuous OSD display is desired, and is set to ON when desired and set to OFF when not desired. . When “ON” is set, setting items “transmission” and “display format” that follow it can be selected.

  “Transmittance” sets the transmittance of the sub-picture. As the transmittance increases, the sub-image can be seen through and the main image superimposed under the sub-image can be seen. That is, when the transmittance is 100%, all the light beams for displaying the main image are transmitted, and the main image is normally displayed on the screen. As the transmittance decreases, the amount of light transmitted for displaying the main image decreases. When the transmittance reaches 0%, the light for displaying the main image does not transmit, and only the sub-image is displayed. Will come to be. In this embodiment, the “transmittance” is configured such that a numerical value of 0 to 100% can be selected stepwise or steplessly.

  The “display format” selects whether the sub-picture to be displayed is a character, a symbol, or a frame picture that is considered to be a display that does not hinder the effect of the main picture to the maximum extent. If a character is selected, anyone can easily determine whether or not a lamp needs to be replaced. In the educational field such as school, it is preferable to clearly express the lamp status such as the necessity of replacement. In schools where maintenance is not outsourced to specialists, there may be cases where attention to maintenance is not sufficient, so a clear display is considered effective. In the display example using characters, “LAMP REPLACE” is displayed when the lamp needs to be replaced. In addition, if the symbol display is selected, the expression space can be reduced, so it is easy to achieve compatibility with the main video, but learn what kind of state to express by using the instruction manual etc. There is a need. In the symbol display example, when there is a need to replace the lamp, an appropriate mark such as “◯” or “□” is displayed at the corner of the image.

  FIG. 3 shows an example of an input screen for the setting items in the operation unit 21. The selected portion is configured to be highlighted. In this figure, “ON” in the “OSD display continuation” item and “character” in the “expression format” are highlighted. Also, the input data input on such an input screen is sent to the control unit 24 as OSD display data.

The time measuring unit 22 measures the lighting time of the light source lamp 17 and integrates it. The lamp lighting integrated time of the light source lamp 17 measured by the time measuring unit 22 is transmitted to the control unit 24.
The storage unit 23 includes a RAM type memory, and stores input data transmitted from the operation unit 21 to the control unit 24 as OSD display data. FIG. 4 shows an example stored in the storage unit as OSD display data. That is, according to this example, “continuation of OSD display” is “ON”, “transmittance” is “30%”, and “display format” is “character”.

  In addition, the storage unit 23 stores the life of the light source lamp stored in advance, the “lamp lighting integrated time” measured by the time measurement unit 22, “life of the light source lamp”, and the control unit 24 based on these. The “lamp replacement flag” to be determined is stored. FIG. 5 illustrates the contents. According to this example, 2000 hours is input and stored in advance as the “life of the light source lamp”. Further, 2010 hours, which is the lamp lighting integrated time measured by the time measuring unit 22, is stored as “lamp lighting integrated time”. Further, “1” is stored as the “lamp replacement flag” determined by the control unit 24. When the “lamp replacement flag” is “0”, lamp replacement is not necessary, and when the “lamp replacement flag” is “1”, lamp replacement is necessary. Here, “1” is stored based on the determination in the control unit 24 described later.

  The control unit 24 exchanges signals with each unit and controls each unit so that the operation of the entire projection display apparatus is performed without any problem. Further, regarding the sub-picture signal processing, the input data input in the operation unit 21 is received and stored in the storage unit 23. Further, the lamp lighting integrated time measured by the time measuring unit 22 is stored in the storage unit 23. In addition, the control unit 24 generates a “lamp replacement flag” by comparing the life of the light source lamp stored in the storage unit 23 and the lamp lighting integrated time measured by the time measurement unit 22 and stores it in the storage unit 23. To do. The “lamp replacement flag” is “0” when the lamp replacement is not necessary as described above, and is “1” when the lamp replacement is necessary. The comparison is made in this example with 2010 hours) and the life of the light source lamp (2000 hours in this example). For example, if the lamp lighting integration time is less than 2000 hours, the lamp replacement is not necessary, and the “lamp replacement flag” is set to “0”. If the lamp lighting integration time is 2000 hours or more, it is determined that the lamp needs to be replaced, and the “lamp replacement flag” is set to “1”. Therefore, in the above example, the “lamp replacement flag” is “1”.

  Then, when “ON” is selected for the user menu “Continue OSD display” on the operation unit 21, the control unit 24 reads the OSD display data stored in the storage unit 23 and information on the life of the light source lamp, These are transmitted to the OSD processing unit 13. When the “lamp replacement flag” is “1”, the OSD processing unit 13 performs control so that a sub-video is generated.

  The power supply unit 25 guides AC power from the external power supply 25a from the plug, and supplies a DC voltage stabilized by performing transformation, rectification, and smoothing processing in the built-in AC / DC conversion unit to each unit. It is configured.

  The projection display apparatus configured as described above is controlled as shown in the flowchart of FIG. 6, and information on the life of the light source lamp is displayed and controlled as a sub-picture. This will be described in detail.

  In this projection display apparatus, the OSD display data input from the operation unit 21 is configured such that the data at the time of stop is taken over at the next start-up. Therefore, when “ON” is selected for the user menu “continuation of OSD display” at the time of the previous stop, the life of the light source lamp is changed when the power is turned on and the light source lamp 17 is turned on. An OSD display function for displaying information on the sub-picture is started. In addition, since the transition from the standby state to the lighting state of the light source lamp 17 is confirmed by the end of the start-up screen, it is first monitored whether or not the start-up screen is ended when the power is turned on (step S1). When “OFF” is selected for the user menu “continuation of OSD display” at the time of the previous stop, the system does not start. However, the OSD display data can be changed by operating the operation unit 21 at any time after starting the projection display apparatus. Therefore, “ON” can be selected for the user menu “continuation of OSD display” after the projection display apparatus is activated. Then, when “ON” is selected for the user menu “Continue OSD display” after the projection display apparatus is activated, the OSD display function is started in the same manner as described above, and the determination in step 1 is performed. On the other hand, if “OFF” is selected for the user menu “Continue OSD display” after starting up the projection display apparatus, the OSD display function is stopped. The following is a case where “ON” is selected for the user menu “continuation of OSD display”.

  When it is confirmed in step 1 that the start screen is finished, the process proceeds to step 2. In step 2, OSD display data and information on the life of the light source lamp stored in the storage unit 23 are read out and transmitted from the control unit 24 to the OSD processing unit 13. Here, when the “lamp replacement flag” is “1”, the OSD processing unit 13 generates a sub-video and combines the sub-video with the main video so that the sub-video is transparently displayed (step S2). When the “lamp replacement flag” is “0”, no sub-video signal is generated because there is no need to replace the lamp. In addition, the OSD display data memorize | stored in the memory | storage part 23 are as described in FIG. 4, The information regarding the lifetime of a light source lamp is as described in FIG.

  Then, this composite video signal is output to the liquid crystal panel drive unit 14, and the liquid crystal panel 15 is controlled in accordance with this composite video signal, and the composite video light that is light-modulated is projected and displayed on the OSD (step S3). Note that the sub-picture displayed on the OSD based on the stored data in FIGS. 4 and 5 is information such as that illustrated in FIG. 7 and is related to the life of the light source lamp. That is, the sub-picture is displayed by the characters “LANP REPLACE” and is displayed transparent to the main picture. The viewer can easily recognize the necessity of replacing the light source lamp 17 from these characters.

  In the next step 4, it is monitored whether the OSD display data and the information on the life of the light source lamp stored in the storage unit 23 are updated. When the stored data is updated, the updated stored data is read (step S5) and transmitted from the control unit 24 to the OSD processing unit 13. Here, when the “lamp replacement flag” is “1”, the sub-picture is updated in the OSD processing unit 13 (step S6). Then, the OSD display is continued with the updated sub-picture. As long as the stored data is not updated, the previous sub-picture is continuously displayed as OSD.

  Next, in step 7, the completion of the lamp turn-off control by the device stop command is monitored. If the lamp turn-off control is not completed, the processes in steps S4, S5, and S6 are repeated to complete the light source lamp 17 turn-off control. In this case, the OSD display as the sub-picture is ended (step S8), and this display system is ended.

  In this embodiment, when the light source lamp 17 does not reach the lifetime of the light source lamp, the OSD display function is operating, but no display is performed. Since the life of the light source lamp is set to be earlier than the time when it is not lit, the light source lamp 17 may be replaced after the OSD display informing that the life has been reached. .

When the lamp is replaced by the above-mentioned sub-picture relating to the life of the light source lamp, the lamp lighting integrated time is initialized and the “lamp replacement flag” is updated.
Since the projection display apparatus according to Embodiment 1 is configured as described above, the following effects can be obtained.

(1) The projection display apparatus according to the present embodiment can perform OSD display of information relating to the life of the light source lamp as a sub-picture when there is one light source lamp 17.
(2) Since the information about the life of the light source lamp is continuously OSD displayed as a sub-picture, the information about the life of the light source lamp is continuously notified to the viewer or the manager before the light source lamp 17 stops lighting. be able to. Therefore, it is possible to prevent the viewer or manager from overlooking information on the life of the light source lamp.

(3) Further, since information relating to the life of the light source lamp is transmitted and displayed as a sub-picture, it is possible to achieve both sub-picture display and main-picture display continuously and in the long term.
(4) Further, since the transparency of the sub-picture can be set stepwise or steplessly between 0 and 100, it is possible to set the transmittance according to the viewer's desire. It is easy to achieve both video display.

  (5) Since the OSD display data includes items for turning ON / OFF the display of sub-pictures, it is noticed when the light source lamp 17 is approaching the end of its life or how the life of the light source lamp 17 is. The sub-video can be OSD-displayed according to the user's request.

  (6) The OSD display data includes contents for notifying whether or not the light source lamp 17 needs to be replaced. The notification of whether or not the lamp needs to be replaced is “the life of the light source lamp” input in advance in the storage unit. And it is notified by the result judged from "lamp lighting integration time". Various display items relating to the life of the light source lamp are conceivable, but the notification of necessity of lamp replacement as described above is most necessary.

  (7) The sub-picture may include a display indicating the state of the light source lamp 17 by characters. When the characters are displayed in this way, anyone can clearly know the necessity of replacing the light source lamp 17.

  (8) The sub-picture may include a display indicating the state of the light source lamp 17 by a symbol. Displaying with symbols in this manner makes it possible to easily notify information about the life of the light source lamp using a narrow space, so that it is easy to achieve both the sub-picture and the main picture.

  (9) The sub-picture may include a display in which the periphery of the main picture is clouded to make it look like a frame when the light source lamp 17 needs to be replaced. When displayed in such a frame state, it is possible to notify the necessity of lamp replacement in a simple form that does not hinder viewing of the main video. FIG. 8 is an example of notification by the above-mentioned frame, and is a case where the transmittance is 30%.

(Embodiment 2)
Next, a projection display apparatus according to Embodiment 2 will be described with reference to FIGS. In the following description, elements that are the same as those in the first embodiment are given the same reference numerals, and the description is simplified.

  In the second embodiment, the number of light source lamps 17 is four and information on the life of the light source lamps can be displayed for each light source lamp 17. The number of the light source lamps 17 increases and the number of light source lamps 17 increases. This is different from the first embodiment in that the information on the lifetime is increased.

  FIG. 9 is a functional block diagram showing a schematic configuration of the projection display apparatus according to the second embodiment. Compared with FIG. 1 relating to the first embodiment, the light source lamp 17 and the lamp power supply unit 16 are respectively paired. It is different in that it consists of 4 sets. In FIG. 9, four light source lamps 17 are assigned identification numbers 1 to 4 and expressed as “light source lamp 1”, “light source lamp 2”, “light source lamp 3”, and “light source lamp 4”. Yes.

The basic functions of each part are the same as those in the first embodiment, but the following description will be focused on differences due to an increase in the number of light source lamps 17.
In this configuration, the video signal input unit 11 and the video signal processing unit 12 are the same as those in the first embodiment.

  The OSD processing unit 13 generates a sub-video signal based on the OSD display data output from the control unit 24 for the light source lamp 17 whose “lamp replacement flag” is “1” transmitted from the control unit 24, and the video signal The sub video is combined with the main video signal input from the processing unit 12 so as to be transmitted and displayed. The liquid crystal panel drive unit 14, the liquid crystal panel 15, each lamp power source unit 16, each light source lamp 17, and the power source unit 25 are the same as those in the first embodiment. However, as described above, four light source lamps 17 are provided, and a lamp power source unit 16 is provided for each light source lamp 17.

  The operation unit 21 is different from the case of the user menu item to be input in the first embodiment. The setting contents of the user menu item and the OSD display data to be set in this case are as shown in FIG. Specifically, the items “OSD display continuation” and “transmittance” are the same as those in the first embodiment. “Display format” allows selection of characters, symbols or characters / symbols. The “scroll function” is not provided in the first embodiment, and is a function that repeatedly displays sub information to be displayed periodically and is configured to be able to select ON or OFF. . The “scroll cycle” refers to the message switching cycle, and can be selected in steps of 5 to 8 seconds. In addition, the illustration of the input screen about the said setting item in this embodiment is abbreviate | omitted.

  FIG. 11 shows an example of input data for the setting items in the operation unit 21. That is, according to this example, “OSD display continuation” is “ON”, “Transparency” is “30%”, “Display format” is “Character & Symbol”, “Scroll function” is [ON], and The “scroll cycle” is “5 sec”. Further, the input data input by the operation unit 21 is sent to the control unit 24 as OSD display data as in the case of the first embodiment, and is stored in the storage unit 23.

  The time measuring unit 22 measures the lighting time for each of the four light source lamps 17 and integrates the lighting time for each of the light source lamps 17. Then, the lamp lighting integration time for each light source lamp 17 measured by the time measuring unit 22 is transmitted to the control unit 24. Whether the light source lamp 17 is on or off is detected by the lamp power supply unit 16 and transmitted to the control unit 24.

  The storage unit 23 is basically the same as that of the first embodiment, and is configured by a RAM type memory. The storage unit 23 includes the input data transmitted from the operation unit 21 to the control unit 24 and the time measurement unit 22. The measured “lamp lighting integration time”, “light source lamp life”, and “lamp replacement flag” determined by the control unit 24 based on these are stored. However, it is considered that the lamp needs to be replaced when the life of the light source lamp is exceeded and when the lamp malfunctions due to a failure or the like and does not light up. In the case of the first embodiment, since only one light source lamp 17 is provided, the OSD display itself cannot be performed when the light source lamp 17 is not lit. When a plurality of light source lamps 17 are provided as in this embodiment, OSD display is possible even when some of the light source lamps 17 are malfunctioning.

  Therefore, in this embodiment, a “lamp replacement flag” includes a “lamp life excess flag” and a “lamp malfunction flag”. The “lamp life excess flag” in this case indicates whether or not the lamp integration time has reached the life of the light source lamp, and is “1” when the lamp integration time exceeds the life of the light source lamp. If it is less than that, it becomes “0”. Therefore, the “lamp life exceeded flag” is substantially the same as the “lamp replacement flag” in the first embodiment. Further, the “lamp operation failure flag” indicates whether or not the light source lamp 17 is normally lit, and the lighting or extinguishing state detected in the lamp power supply unit 16 and the operating state as described above. It is discriminated from the operation mode of the projection display apparatus. Note that the case where the light source lamp 17 does not light normally means that the light source lamp 17 does not light up suddenly although the operation of the projection display apparatus is not turned off, or the light source lamp 17 cannot be turned on due to a failure. A case where the lamp does not light normally due to various factors. The “lamp malfunction flag” is “1” when the light source lamp 17 is not lit, and is “0” instead of malfunction when illuminated.

  FIG. 12 illustrates the contents of stored data in the storage unit. According to this example, 2000 hours is input and stored in advance as the “life of the light source lamp”. In addition, “light source lamp 1” stores 2010 hours, “light source lamp 2” stores 2030 hours, “light source lamp 3” stores 2030 hours, and “light source lamp 4” stores 1950 hours as “lamp lighting integration time”. . Therefore, “1” is stored for “light source lamp 1” to “light source lamp 3” and “0” is stored for “light source lamp 4” as “lamp life excess flag”. Further, it is detected in the lamp power supply unit 16 that the “light source lamp 1” and the “light source lamp 4” are not turned on as the “lamp malfunction flag”, and as a result, “1” is stored and “light source lamp 2” is stored. As for “light source lamp 3”, “0” is stored as a result of the lamp power supply unit 16 confirming that the light source lamp 3 is normally lit.

  The control unit 24 is basically the same as that in the first embodiment. That is, the control unit 24 exchanges signals with each unit, and controls each unit so that the operation of the entire projection display apparatus is performed without any problem. Further, with regard to sub-picture signal processing, input data input at the operation unit 21 is received and stored in the storage unit 23. Further, the control unit 24 stores the lamp lighting integrated time measured by the time measuring unit 22 in the storage unit 23, and “lamp replacement flag” based on the information about the lamp lighting integrated time and the lighting state of the light source lamp 17. Is generated and stored in the storage unit 23. Note that the “lamp replacement flag” in the second embodiment is composed of the “lamp life exceeded flag” and the “lamp malfunction flag” as described above.

  Further, when “ON” is selected for the user menu “continuation of OSD display” on the operation unit 21, the control unit 24 stores the OSD display data stored in the storage unit 23 as in the case of the first embodiment. And the information regarding the lifetime of the light source lamp is read out and transmitted to the OSD processing unit 13. When the “lamp life exceeded flag” or the “lamp malfunction flag” is “1”, the OSD processing unit 13 generates a sub-picture about the information on the light source lamp life for the light source lamp 17. I have control.

The projection display apparatus configured as described above is controlled as shown in the flowchart of FIG. 13, and information on the life of the light source lamp is displayed and controlled as a sub-picture.
As in the case of the first embodiment, the projection display apparatus according to the second embodiment is configured such that the data at the time of stop is taken over at the next start-up. That is, when “ON” is selected for the user menu “Continue OSD display” at the time of the previous stop, the life of the light source lamp is changed when the power is turned on and the light source lamp 17 is turned on. An OSD display function for displaying information on the sub-picture is started. When the power is turned on, it is first monitored whether or not the start screen is finished (step S11). When “OFF” is selected for the user menu “continuation of OSD display” at the time of the previous stop, the system does not start. However, as in the case of the first embodiment, the OSD display data can be changed by operating the operation unit at any time after starting the projection display apparatus. Therefore, when “ON” is selected for the user menu “Continue OSD display” after the projection display apparatus is activated, the OSD display function is started. When “OFF” is selected, the OSD display function is activated. Stopped.

  When the end of the startup screen is confirmed in step 11, the stored data in the storage unit 23 is read and transmitted to the OSD processing unit 13 as in the case of the first embodiment. Here, when the “lamp life exceeded flag” or the “lamp malfunction flag” is “1” for any one of the light source lamps 17, a sub-picture for the light source lamp 17 is generated in the OSD processing unit 13, and The sub-video is displayed so as to be transparent with respect to the main video, and further, the sub-video is synthesized so as to be scroll-displayed for each light source lamp 17 (step S12). Here, the contents shown in FIG. 11 are stored in the storage unit 23 as the storage data related to the user menu items, and the contents shown in FIG. 12 are stored in the storage unit 23 as the storage data related to the life of the light source lamp.

  Then, the composite video signal is output to the liquid crystal panel drive unit 14, and the composite video light that is controlled and modulated by the liquid crystal panel according to the composite video signal is projected and OSD-displayed (step S13). In this embodiment, as described above with respect to the user menu item, “Character & Symbol” is selected for “Display Format” and “ON” is selected for “Scroll Function”. In this way, the information is scrolled in the order of solid line arrows, and information on the life of the light source lamps for each light source lamp 17 is sequentially displayed. Note that examples of OSD display screens based on the stored data in FIGS. 11 and 12 are omitted.

  As shown in FIG. 14, the information on the life of the light source lamp is indicated by a symbol surrounding the number of the identification number of the light source lamp 17 and characters written on the right side thereof. “◯” indicates that the operation is defective, and “□” indicates that the life of the light source lamp has been reached. The letters “LAMP REPLACE” indicate that the light source lamp needs to be replaced, the letters “(LIFE LIMIT)” indicate that the light source lamp has reached the end of its life, and the letters “(FAIL)” indicate that the light source lamp Indicates a malfunction. In addition, since “5 sec” is selected as the “scroll cycle”, the state of the light source lamp 17 is sequentially displayed in this cycle.

  In this embodiment, the OSD display is performed only for the malfunctioning light source lamp 17 or the light source lamp that has reached the end of its life, and the life of the light source lamp is reached. No indication is given for things that normally light up. Therefore, in the scroll operation, the light source lamp 17 that is normally turned on without reaching the life of the light source lamp is formed so as to be passed without time and to display information on the life of the next light source lamp 17. Has been.

  In the next step 14, it is monitored whether the storage data relating to the user menu item and the storage data relating to the life of the light source lamp stored in the storage unit 23 are updated. When the stored data is updated, the updated stored data is read from the storage unit 23 (step S15), and this is transmitted from the control unit 24 to the OSD processing unit 13. Here, when the “lamp life excess flag” or the “lamp malfunction flag” is “1”, the sub-picture for the light source lamp 17 is updated in the OSD processing unit 13 (step S16). Then, the OSD display is continued with the updated sub-picture. If the stored data is not updated, the previous sub-picture is continuously displayed as OSD.

  Next, in step 17, the completion of the lamp turn-off control by the device stop command is monitored. If not completed, the processes in steps S4, S5, and S6 are repeated, and if the light source lamp 17 turn-off control is completed, The OSD display as a sub-picture is ended (step S8), and this display system is ended. The lamp extinction control may be executed when the light source lamp 17 is switched. In this case, the turn-off of the light source lamp 17 is not intended to stop the device but is a transient lamp turn-off state during operation. When there are a plurality of light source lamps 17 as described above, it is essential to monitor the completion of the lamp turn-off control.

  When the lamp is replaced by the sub-picture relating to the lifetime of the light source lamp, the lamp lighting integrated time for the replaced light source lamp 17 is initialized, and the “lamp life exceeded flag” as the “lamp replacement flag” and Assume that the “lamp malfunction flag” is updated. When an IC is added to the light source lamp 17 and the identification and management of the light source lamp 17 are performed by a serial number or the like, this data is initialized simultaneously with the replacement of the light source lamp 17. Composed.

  Since the projection display apparatus according to the second embodiment is configured as described above, the effects (2) to (9) in the first embodiment are achieved, and the following (10) to (13) ).

  (10) When there are a plurality of light source lamps 17, the projection display apparatus according to the present embodiment can OSD display information on the lifetime of the plurality of light source lamps as a sub-image.

  (11) In the OSD display data, scroll display in which the sub-pictures related to the plurality of light source lamps 17 are sequentially OSD-displayed for each light source lamp 17 is performed, or all the light source lamps 17 are collectively displayed without scroll display. Contains items to choose. In this case, if all the light source lamps 17 are collectively displayed, information about the life of the light source lamps can be viewed at a time for all the light source lamps 17. However, since the display space for the sub-picture becomes large and viewing of the main picture is hindered, it becomes difficult to achieve both the main picture and the sub-picture. On the other hand, when the scroll display is selected, the display space for the sub video is reduced, so that it is easy to achieve both the main video and the sub video.

  (12) Since the display of the light source lamp 17 that does not reach the life of the light source lamp and normally lights up is omitted in the scroll display, the display of the sub-picture is simplified and attention is paid to necessary information. Therefore, it is possible to eliminate the fear of overlooking.

  (13) Since the OSD display data includes the scroll cycle in the scroll display, the scroll display can be easily performed because the scroll display can be performed at a cycle according to the user's request.

(Modification)
The present invention can be modified as follows in the above embodiment.
In Embodiment 1 and Embodiment 2, when operating the operation unit 21 and inputting OSD setting information to a user menu item, what kind of OSD display should be demonstrated on the screen? Since it can be set while confirming whether it is displayed, the decision of setting can be made easily and the sub information displayed on the OSD can be easily understood.

  In the second embodiment, in the “display format” of the user menu item input from the operation unit 21, the frame is selected individually or in a format used in combination with symbols or / and characters as in the first embodiment. You may be able to do it. When only the picture frame is used, the amount of information that can be presented is reduced, so that only the fact that there is a light source lamp 17 that needs to be replaced is displayed. Instead, in this case, as described in the first embodiment, it becomes a simple expression format, and it is very unlikely that the main video is disturbed. On the other hand, when used in combination with a symbol or / and a character, a specific state can be displayed with the symbol or the character as well as alerting with a frame.

  In the first and second embodiments, the “display format” of the user menu item input from the operation unit 21 may select the size, color, position, etc. of characters and symbols. In this way, since the display format is diversified, the selection range as the display format according to the user's desire is expanded.

  -In Embodiment 1 and Embodiment 2, you may make it display the remaining time to the lifetime of a light source lamp as information regarding the lifetime of the light source lamp used as a sub-picture. The remaining time can be calculated from the difference between the life of the light source lamp and the lamp lighting integrated time stored in advance in the storage unit 23. In this way, early notification can be performed in consideration of the time from lamp arrangement to acquisition.

  The projection display apparatus according to the present invention can be widely used in various projection display apparatuses such as a three-plate liquid crystal projection display apparatus.

  17 ... Light source lamp, 21 ... Operation unit, 23 ... Storage unit.

Claims (13)

The input video signal is subjected to video signal processing, the illumination light from the light source lamp is modulated based on the video signal subjected to the video signal processing, the main video is displayed, and information on the life of the light source lamp is displayed on the operation unit. A projection-type image display device in which OSD display data for notification is input, and information on the life of the light source lamp is OSD-displayed as a sub-image based on the input OSD display data,
The sub-picture is configured to be able to be displayed continuously, and is transmissively displayed so that the main picture in the background can be visually recognized.   2. The projection display apparatus according to claim 1, wherein the OSD display data includes an item for setting the transparency of the sub-picture stepwise or steplessly between 0 and 100.   3. The projection display apparatus according to claim 1, wherein the OSD display data includes an item for turning ON / OFF the display of the sub-picture.   The OSD display data includes contents for notifying whether or not the light source lamp needs to be replaced. The notification of whether or not the lamp needs to be replaced includes the life of the light source lamp and the lamp lighting integrated time input in advance in the storage unit. The projection type image display apparatus according to claim 1, wherein the projection type image display apparatus is determined from the following.   5. The projection display apparatus according to claim 4, wherein the sub-picture includes a display indicating a state of the light source lamp by characters.     6. The projection display apparatus according to claim 4, wherein the sub-picture includes a display indicating a state of the light source lamp by a symbol.   The projection according to any one of claims 4 to 6, wherein the sub-picture includes a display in which the periphery of the main picture is clouded to make it look like a frame when the light source lamp needs to be replaced. Type image display device.   5. The projection display apparatus according to claim 4, wherein the sub-picture includes a display indicating a remaining time until the light source lamp reaches the end of its life.   9. The projection type image display according to claim 1, wherein the number of the light source lamps is one, and the OSD display data and the sub-picture relate to the one light source lamp. apparatus.   9. The projection type image display according to claim 1, wherein there are a plurality of the light source lamps, and the OSD display data and the sub-picture are related to the plurality of light source lamps. apparatus.   In the OSD display data, it is selected whether the sub-pictures related to the plurality of light source lamps are displayed in a scrolling manner in which OSD is sequentially displayed for each light source lamp, or all light source lamps are collectively displayed without performing the scroll display. 11. The projection display apparatus according to claim 10, wherein items are included.   12. The projection display apparatus according to claim 11, wherein the scroll display omits display of a light source lamp that has not reached the end of its life and can be normally lit.   The projection display apparatus according to claim 11 or 12, wherein the OSD display data includes a scroll cycle in the scroll display.