JP2011158692A - Projector device and method of controlling the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector device, along with a method of controlling the same, capable of informing a user beforehand that an accumulated lighting time of a lamp is reset relative to a lamp unit whose lifetime is not finished yet, by being replaced with a new lamp unit. <P>SOLUTION: The projector device 1 having a lamp unit 5 includes: a lamp information memory 31 for storing the accumulated lighting time of the lamp and presence of generation of a lighting error; a first lamp unit control unit 8 for detecting whether a fuse included in the replaced lamp unit is in the conductive state, when the lamp unit 5 is replaced; and a control unit 20 for output of a confirmation message relative to use of the exchanged lamp unit, when it is detected that the fuse included in the replaced lamp unit is in the conductive state, and the accumulated lighting time does not reach the lifetime of the lamp, and a lighting error is not generated. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a projector and a control method thereof.

  There is known a projector that counts the cumulative lighting time of a lamp and prompts the replacement of the lamp unit by displaying a warning or the like when a predetermined cumulative lighting time has elapsed. When providing a counter that counts the cumulative lighting time, it is necessary to reset the initial value of the counter when the lamp unit is replaced. However, if the initial value is reset when the lamp unit is replaced with a used lamp unit, the correct accumulated lighting time cannot be counted.

  Patent Document 1 discloses a technique for determining whether a lamp unit is new or used when the lamp unit is mounted, and resetting the initial value when the lamp unit is new. That is, in Patent Document 1, a fuse that is blown when a metal halide lamp is used is installed, and in the lamp unit control device, the state of the fuse is checked at the start of the first lighting of the metal halide lamp, and the fuse is not blown. The initial value of the lamp lighting time counter is set to 0. If the fuse is blown, the lamp lighting time counter is not reset. After the count value of the lamp lighting cumulative time counter reaches 1000 hours, An invention is described in which the current supplied to the metal halide lamp is reduced to reduce the brightness of the metal halide lamp.

  Patent Document 2 describes a projector that projects an image using a plurality of lamps.

Japanese Patent Laid-Open No. 10-177898 JP 2009-69598 A

  As described above, according to the invention described in Patent Document 1, when the lamp unit before replacement is replaced with a new lamp unit that has not reached the end of its life, the fuse of the lamp unit after replacement is blown out. If not (if it is in a conductive state), it is determined to be a new product, and the lamp lighting cumulative time counter is reset.

  However, if a lamp unit that has not reached the end of its life is mounted again to return to its original state, the cumulative lighting time is lost because the lamp lighting cumulative time counter has already been reset.

  In particular, in the case of a configuration including a plurality of lamp units as in the projector described in Patent Document 2, a lamp unit that should be replaced by a user is mistakenly replaced with a lamp unit that has not reached the end of its life. There may be cases where they are replaced.

  The present invention has been made to solve the above-described problem, and by replacing the lamp unit with a new lamp unit, the cumulative lighting time of the lamp for the lamp unit that has not reached the end of its life is reset. An object of the present invention is to provide a projector capable of informing a user in advance and a control method thereof.

The present invention that can solve the above-described problems is a projector having a lamp unit including a lamp and a fuse, a storage unit that stores the cumulative lighting time of the lamp, and whether or not the fuse is in a conductive state. And detecting that the lamp unit in which the fuse is in a non-conductive state is determined as a replaced lamp unit, and detecting that the fuse included in the lamp unit after the replacement is in a conductive state and replacing the lamp unit. And a usage confirmation unit that outputs a confirmation message about the use of the lamp unit after the replacement when the cumulative lighting time of the lamp of the lamp unit has not reached the lifetime of the lamp.
When the fuse included in the lamp unit after replacement is in a conductive state, it is understood that the lamp unit has been replaced with a new lamp unit that has not been turned off. According to the above configuration, even if the lamp unit is replaced with a new lamp unit, if the accumulated lighting time of the replaced lamp unit has not reached the lifetime, a confirmation message is output regarding the use of the new lamp unit. For this reason, the user can check whether the lamp unit has been replaced with a new lamp unit by mistake. For example, if the confirmation message includes a message that resets the cumulative lighting time of the lamp for the replaced lamp unit, the cumulative lighting time of the lamp that has not reached the end of its life will be reset by replacing it with a new lamp unit. It is possible to inform the user that it will be done.

In the projector according to the aspect of the invention, the use confirmation unit may be provided in the replaced lamp unit in response to receiving an input of confirmation completion regarding the use of the replaced lamp unit after outputting the confirmation message. It is preferable to make the fuse nonconductive.
A user who recognizes that a new lamp unit has been accidentally replaced by a confirmation message can be removed and returned to the original lamp unit. According to the above configuration, when the confirmation completion input is received after the confirmation message is output, the fuse after replacement is made non-conductive. Therefore, the fuse of the new lamp unit should be removed without being made conductive. Can do.

In the projector according to the aspect of the invention, the use confirmation unit may remove the fuse included in the lamp unit after the replacement when the cumulative lighting time of the lamp of the replaced lamp unit has reached the lifetime of the lamp. It is preferable to make it conductive.
When the cumulative lighting time has reached the lifetime, it is necessary to replace it with a new lamp unit. According to the above configuration, in such a case, since the fuse of the lamp unit after replacement is made non-conductive, it is possible to accurately detect the lamp unit that has been replaced correctly and to start using it.

In the projector of the present invention, the projector includes a plurality of lamp units, and the storage unit stores the cumulative lighting time of the lamp for each lamp unit,
When the cumulative lighting time of the lamp has reached the lifetime for another lamp unit that is not a replacement target, the use confirmation unit preferably outputs a lifetime reaching message for the other lamp unit.
According to the above configuration, by outputting the life reaching message, it is possible to notify the user that the cumulative lighting time of the lamp has reached the life time for the other lamp units. Therefore, the user can be made aware that the lamp unit to be replaced was originally another lamp unit that has already reached the lifetime.

The present invention that can solve the above-described problems is a projector having a lamp unit including a lamp and a fuse, and stores a cumulative lighting time and whether or not a lighting error has occurred for the lamp. And a detection unit that detects whether the fuse is in a conductive state and discriminates a lamp unit in which the fuse is in a non-conductive state from a replaced lamp unit, and a fuse included in the lamp unit after the replacement is in a conductive state When the cumulative lighting time of the lamp of the replaced lamp unit has not reached the life time of the lamp and the lighting error has not occurred, the lamp unit after replacement is detected. And a usage confirmation unit that outputs a confirmation message regarding the use of.
According to the above configuration, even if the lamp unit is replaced with a new lamp unit, if the accumulated lamp lighting time for the replaced lamp unit has not reached the lifetime and no lighting error has occurred, A confirmation message about the use of the lamp unit is output. For this reason, the user can check whether the lamp unit has been replaced with a new lamp unit by mistake. For example, if the confirmation message includes a message to reset the cumulative lamp operating time for the replaced lamp unit, it has not reached the end of its service life due to replacement with a new lamp unit, and a lighting error has occurred. It is possible to notify the user that the cumulative lighting time of the lamp unit in which no has occurred will be reset.

  In the projector according to the aspect of the invention, the use confirmation unit may include a fuse included in the lamp unit after replacement in response to receiving an input of confirmation completion regarding the lamp unit after replacement after outputting the confirmation message. It is preferable to make it non-conductive.

In the projector according to the aspect of the invention, the use confirmation unit may determine that the accumulated lighting time of the lamp of the replaced lamp unit has reached the life time of the lamp, or that the lighting error has occurred for the replaced lamp unit. When it has occurred, it is preferable that the fuse included in the lamp unit after replacement is made non-conductive.
When the cumulative lighting time has reached the lifetime, or when a lighting error has occurred in the lamp unit, it is necessary to replace it with a new lamp unit. According to the above configuration, in such a case, since the fuse of the lamp unit after replacement is made non-conductive, it is possible to accurately detect the lamp unit that has been replaced correctly and to start using it.

Further, in the projector according to the aspect of the invention, the projector includes a plurality of lamp units, and the storage unit stores a cumulative lighting time of the lamp and whether or not the lighting error has occurred for each lamp unit, and the use confirmation unit If the cumulative lighting time of the lamp has reached the lifetime for other lamp units not subject to replacement, a life reaching message is output for the other lamp unit, and the lighting error for the other lamp unit It is preferable to output an error occurrence message for the other lamp unit.
According to the above configuration, by outputting the life reaching message, it is possible to notify the user that the cumulative lighting time of the lamps for other lamp units has reached the life time. As a result, the user can be made aware that the lamp unit to be replaced was originally another lamp unit that has already reached the end of its lifetime. Further, by outputting an error occurrence message, it is possible to notify the user that a lighting error has occurred for another lamp unit. As a result, the user can be made aware that the lamp unit that should be replaced was originally another lamp unit in which a lighting error has occurred.

  In addition, a projector control method according to the present invention that can solve the above-described problem includes a lamp unit that includes a lamp and a fuse, and a storage unit that stores a cumulative lighting time for the lamp. And detecting whether or not the fuse is in a conductive state and determining that the lamp unit in which the fuse is in a non-conductive state is a replaced lamp unit; and the fuse included in the lamp unit after the replacement is in a conductive state And when the cumulative lighting time of the lamp of the replaced lamp unit has not reached the lifetime of the lamp, a confirmation message is output about the use of the lamp unit after the replacement. It is characterized by including.

It is a block diagram which shows the internal structure of the projector of this embodiment. It is the figure which showed an example of the lamp information which the lamp information storage part of the projector of this embodiment memorize | stores. It is a flowchart for demonstrating the process which outputs the confirmation message by the projector of this embodiment. It is an example of a warning message. It is an example of a lifetime reaching message. It is an example of a confirmation message.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a projector and a control method thereof according to the invention will be described in detail with reference to the drawings.

(About the internal configuration of the projector)
The internal configuration of the projector according to the present embodiment will be described with reference to FIG.
As shown in FIG. 1, the projector 1 includes a first lamp unit 5, a second lamp unit 6, a condenser 7, a first lamp unit controller 8, and a second lamp unit controller. 9, liquid crystal light valves 12 R, G, and B, projection optical system 13, liquid crystal light valve driving unit 14, control unit 20, input terminal 30, lamp information storage unit 31, and audio / video processing unit 32. A frame memory 33, a video processing unit 34, an audio processing unit 35, a speaker 36, an OSD (On Screen Display) processing unit 38, an operation signal processing unit 43, and an operation panel 44.

  The first lamp unit 5 includes a first lamp and a first fuse 5a that is blown (non-conductive) when the first lamp is turned on for the first time. The first lamp and the first fuse 5a are lamps. It is fixed and stored in the housing. The second lamp unit 6 includes a second lamp 6 and a second fuse 6a that is blown when the second lamp is turned on for the first time. The second lamp and the second fuse 6a are provided in the lamp housing. Fixed and stored. The first lamp unit 5 and the second lamp unit 6 can be separated from the projector 1 by themselves. Since each lamp has a lifetime, when it is worn out, the lamp unit can be replaced with a new one.

  The first lamp unit control unit 8 (detection unit) is a lighting unit that turns on or turns off the first lamp in accordance with an instruction from the control unit 20. For example, when the first lamp is a high-pressure discharge lamp, it is constituted by a lighting circuit that applies a starting voltage, a ballast that supplies an appropriate lamp current, and the like. The first lamp unit controller 8 has a lighting time counter that counts the lighting time of the first lamp. In addition, the first lamp unit controller 8 includes an energization confirmation circuit that confirms whether or not the first fuse 5a is in a conductive state (energization is possible) when the first lamp is turned on for the first time. When energization is possible, it can be confirmed that the first fuse 5a is not blown, that is, a new lamp is installed. Further, the first lamp unit control unit 8 includes a fuse blowing circuit for blowing the first fuse 5a. The first fuse 5a of the present embodiment is a current limiting fuse, and blows off the first fuse 5a when the fuse blowing circuit is energized in accordance with an instruction from the control unit 20. Further, the first lamp unit control unit 8 detects a lighting error such as non-lighting for the first lamp, and notifies the control unit 20 of it.

  Similarly, the second lamp unit control unit 9 (detection unit) is a lighting unit that turns on or off the second lamp in accordance with an instruction from the control unit 20. When the second lamp is a high-pressure discharge lamp, it is constituted by a lighting circuit that applies a starting voltage, a ballast that supplies an appropriate lamp current, and the like. The second lamp unit controller 9 has a lighting time counter that counts the lighting time of the second lamp. The second lamp unit controller 9 includes an energization confirmation circuit that confirms whether or not the second fuse 6a can be energized when the second lamp is turned on for the first time. When energization is possible, it can be confirmed that the second fuse 6a is not blown, that is, a new lamp is installed. Further, the second lamp unit control unit 9 includes a fuse blowing circuit for blowing the second fuse 6a. The second fuse 6a of the present embodiment is a current limiting fuse, and blows off the second fuse 6a when the fuse blowing circuit is energized in accordance with an instruction from the control unit 20. Further, the second lamp unit control unit 9 detects a lighting error such as non-lighting for the second lamp, and notifies the control unit 20 of it.

  The control unit 20 is connected to the first lamp unit control unit 8, the second lamp unit control unit 9, the lamp information storage unit 31, the video signal processing unit 32, the OSD processing unit 38, and the operation signal processing unit 43. . The control unit 20 includes a microprocessor, a rewritable nonvolatile storage unit, and a main storage unit that can be directly accessed by the microprocessor. The nonvolatile storage unit stores a control program for controlling various operations of the projector 1, an OSD image for setting menus and various messages, and OSD information for generating an OSD image such as a display of a trapezoidal distortion correction amount. In addition, various setting values of the projector 1 are stored.

  The microprocessor executes a control program or the like stored in the non-volatile storage unit to control the operation of the projector 1 and calculates various data input from each unit connected to the control unit 20. The result is output to each part.

  The lamp information storage unit 31 stores the cumulative lighting time and the presence / absence of a lighting error for the first lamp and the second lamp included in each of the lamp units 5 and 6. The control unit 20, which is a use confirmation unit in the present invention, accumulates the lighting time of the first lamp counted by the lighting time counter of the first lamp unit control unit 8 and uses the lamp as the cumulative lighting time of the first lamp unit. The information is stored in the information storage unit 31. The control unit 20 accumulates the lighting time of the second lamp counted by the lighting time counter of the second lamp unit control unit 9 and stores it in the lamp information storage unit 31 as the cumulative lighting time of the second lamp unit. To do. Further, the control unit 20 stores in the lamp information storage unit 31 whether or not a lighting error has occurred for each of the lamp units 5 and 6 in accordance with the lighting error notification received from each of the lamp unit control units 8 and 9.

  For example, as shown in FIG. 2, the lamp information storage unit 31 of the present embodiment stores the accumulated lighting time of the first lamp unit 5 as 2100 hours and no lighting error, and the second lamp unit 6 Is stored as 1200 hours and no lighting error.

  The video / audio processing unit 32 decodes the video signal received from the input terminal 30 to convert it into video data before compression encoding, converts these into, for example, RGB signals, and sequentially outputs them to the video processing unit 34. Further, the audio signal input from the audio input terminal is similarly decoded, converted into audio data by D / A conversion, and sequentially output to the audio processing unit 35. A frame memory 33 is connected to the video / audio processing unit 32, and the video data is stored in the frame memory 33 for each frame and the video data stored in the frame memory 33 is read out.

  The video processing unit 34 performs γ correction processing, trapezoidal correction processing, resolution conversion processing, and the like on the RGB signal received from the video / audio processing unit 32, and outputs the result to the liquid crystal light valve driving unit 14.

  The audio processing unit 35 outputs the audio data received from the video / audio processing unit 32 to the speaker 36. Note that the audio processing unit 35 has a volume amplifying unit, amplifies the volume, and outputs it to the speaker 36. As a result, the speaker 36 outputs an analog audio signal that is amplified and input.

  The OSD processing unit 38 receives OSD information such as a menu video and a message video from the control unit 20 and generates an OSD video. Further, the generated OSD video and the video data received from the video processing unit 34 are combined and transmitted to the liquid crystal light valve driving unit 14.

  The operation signal processing unit 43 receives an operation signal input from the operation panel 44 or the remote controller (remote controller) RC and outputs it to the control unit 20.

  The projection optical system 13 has a projection lens 13a. The projector 1 projects an optical image corresponding to the video signal supplied from the input terminal 30 and projects a projection object such as a screen, a white wall, or a white board (hereinafter, “screen SC in this embodiment”) via the projection lens 13a. ").

  The liquid crystal light valve drive unit 14 drives the liquid crystal light valves 12R, G, and B according to the input RGB signals. Each liquid crystal light valve 12R, G, B includes a plurality of pixels in a matrix form. By adjusting the transmittance of each pixel by the liquid crystal light valve driving unit 14, R (red), G (green), B emitted from the light collecting unit 7 and separated into each color light by the color light separation optical system. Each (blue) color light is modulated by the corresponding liquid crystal light valve 12R, G, B, and an optical image is emitted. The optical images emitted from the liquid crystal light valves 12R, 12G, and 12B are combined by a combining optical system such as a cross dichroic prism, and are enlarged and projected on the screen SC by the projection lens 5 of the projection optical system 13.

<About processing to output confirmation message>
Next, processing for outputting a confirmation message by the projector according to the present embodiment will be described with reference to FIGS.
Hereinafter, a process executed by the projector 1 when the user replaces the used first lamp unit 5 with a new lamp unit will be described.

  First, the user removes the used first lamp unit 5 and replaces it with a new lamp unit. At this time, the fuse 5a of the removed first lamp unit 5 has already been blown, and the fuse of the new lamp unit after replacement has not been blown.

  The user activates the projector 1 after replacing the lamp unit. The projector 1 checks the fusing state of the fuses of all the lamp units mounted (Step S11). The first lamp unit control unit 8 confirms whether or not the fuse of the new lamp unit can be energized, and the second lamp unit control unit 9 confirms whether or not the fuse 6a can be energized. When an unblown new lamp unit in which the fuse is not blown is detected (step S13: Yes), the control unit 20 that is a use confirmation unit is notified. On the other hand, if all the fuses of the lamp units are in a non-conducting state (cannot be energized), it is determined that all the fuses are blown (step S13: No), and projection processing is started. When the fuse is blown, the lamp unit that should have been mounted as a new lamp unit is not a new lamp unit, and is a lamp unit that has been used in the past. For this reason, the counting of the lighting time by the lighting time counter is continued without resetting the cumulative lighting time and the value of the lighting time counter stored in the lamp information storage unit 31.

The control unit 20 executes the following processing in order for all unmelted lamp units detected in step S13.
For example, when the control unit 20 receives a notification from the first lamp unit control unit 8, the accumulated lighting time and lighting for the used first lamp unit 5 stored in the lamp information storage unit 31. The presence / absence of an error is acquired (step S15), and it is determined whether the cumulative lighting time has reached the lifetime or whether a lighting error has occurred (step S17). When the cumulative lighting time has reached the lifetime or when a lighting error has occurred (step S17: Yes), the control unit 20 determines the cumulative lighting time for the removed used first lamp unit 5. And the presence or absence of a lighting error is reset (deleted from the lamp information storage unit 31), and the first lamp unit control unit 8 is instructed to blow a fuse of a newly installed new lamp unit. The first lamp unit controller 8 blows the fuse of the new lamp unit and resets the lighting time counter for the first lamp (step S29).

  If there is another unmelted new lamp unit (step S33: Yes), the process returns to step S15. If there is no other unfused new lamp unit (step S33: No), the projection process is started.

  In step S17, when the accumulated lighting time has not reached the lifetime and no lighting error has occurred (step S17: No), the control unit 20 generates a warning message to the OSD processing unit 38. The projection optical system 13 projects a warning message on the screen SC (step S19). Here, since the cumulative lighting time for the first lamp unit 5 is 1200 hours and there is no lighting error, the warning message “The lamp before replacement has not reached the end of its life and a lighting error has occurred” shown in FIG. Is not being projected. " By projecting the warning message in this way, the first lamp unit 5 that does not need to be replaced may be replaced among the first lamp unit 5 and the second lamp unit 6. Can be notified to the user.

  Next, in addition to the first lamp unit 5, the control unit 20 determines whether or not there is a lamp unit that has reached the end of its life or has a lighting error (step S21). Here, the lifetime of the lamp mounted on each lamp unit of the present embodiment is 2000 hours. As shown in FIG. 2, in addition to the first lamp unit 5, the cumulative lighting time for the second lamp unit 6 is 2100 hours, and there is no lighting error. That is, since the cumulative lighting time for the second lamp unit 6 has reached the lifetime (step S21: Yes), the control unit 20 instructs the OSD processing unit 38 to generate a lifetime reaching message, and performs projection. The optical system 13 projects a life reaching message “second lamp has exceeded the life time” shown in FIG. 5 on the screen SC (step S23).

  If the cumulative lighting time for the second lamp unit 6 has not reached the lifetime, but a lighting error has occurred, for example, an error message “The second lamp has a lighting error. Is projected onto the screen SC. By outputting an error occurrence message, the user can be informed that a lighting error has occurred for the second lamp unit 6. Therefore, the user can be made aware that the lamp unit to be replaced was originally the second lamp unit 6 in which the lighting error occurred.

  On the other hand, when the control unit 20 determines that the cumulative lighting time for the second lamp unit 6 has not reached the lifetime and that no lighting error has occurred (step S21: No), Step S25 is executed without projecting the life confirmation message.

  Next, the control unit 20 instructs the OSD processing unit 38 to generate a confirmation message, and the projection optical system 13 projects the confirmation message “Is the replaced lamp correct?” Shown in FIG. Step S25). In addition to the confirmation message, an option “Yes” or “No” for accepting a confirmation input by the user is projected.

  When an exchange confirmation input is received from the user via the operation signal processing unit 43, if the input is “Yes” (Yes in step S <b> 27), the control unit 20 controls the first lamp unit control unit 8. An instruction is given to blow the fuse, and the accumulated lighting time and the presence or absence of a lighting error for the first lamp unit 5 stored in the lamp information storage unit 31 are reset. In response to an instruction from the control unit 20, the first lamp unit control unit 8 blows the fuse of a newly installed new lamp unit and resets the value of the lighting time counter (step S29).

  If there is another unmelted new lamp unit (step S33: Yes), the process returns to step S15. If there is no other unfused new lamp unit (step S33: No), the projection process is started.

  On the other hand, when an input for selecting “No” is received via the operation signal processing unit 43 (step S27: No), the control unit 20 sends the first lamp unit control unit 8 and the second lamp unit control unit 9 to each other. In response to this, the first lamp unit controller 8 and the second lamp unit controller 9 turn off the lamps.

  As described above, according to the above embodiment, even if the lamp unit is replaced with a new lamp unit, the accumulated lighting time of the first lamp unit 5 before the replacement has not reached the lifetime and a lighting error has occurred. If not, a confirmation message about the use of a new lamp unit is output (step S25: see FIG. 6). As shown in FIG. 6, if the confirmation message includes a message to reset the accumulated lighting time of the first lamp unit 5 (first lamp) before replacement, the lamp unit is erroneously replaced with a new one. Thus, it is possible to notify the user that the accumulated lighting time for the first lamp unit 5 that has not reached the lifetime and has no lighting error will be reset.

  Further, the user who recognizes that the lamp unit has been replaced with a new lamp unit by the confirmation message shown in FIG. 6 can remove the new lamp unit and return it to the original first lamp unit 5. . According to the above configuration, since the fuse after replacement is blown after the confirmation message of FIG. 6 is output (step S25, step S27: Yes), the fuse of the new lamp unit is effective without being blown (conductive state). It can be removed as it is.

  In addition, when the accumulated lighting time for the first lamp unit 5 has reached the lifetime, or when a lighting error has occurred for the first lamp unit 5 (step S17: Yes), a new lamp It is necessary to replace the unit. In such a case, since the fuse of the new lamp unit after replacement is blown (step S29), it can be determined later whether or not the lamp unit after replacement is new. For this reason, the cumulative lighting time can be reset at the correct time, and the accurate cumulative lighting time can be counted.

  Further, by outputting the life reaching message shown in FIG. 5, it is possible to notify the user that the cumulative lighting time for the second lamp unit 6 has reached the life time. As a result, the user can be made aware that the lamp unit to be replaced was originally the second lamp unit that has already reached the end of its lifetime.

  In the present embodiment, a projector having two lamp units is described. However, the present invention can be applied to a projector having three or more lamp units. The present invention can also be applied to a projector equipped with only one lamp unit. In this case, it is only necessary to execute Step S11, Step S13, Step S15, Step S17, Step S25, Step S27 and Step S29 except for Step S19, Step S21 and Step S23 in FIG.

  In this embodiment, the determination whether the fuse is blown and the cumulative lighting time is reset is made based on two factors, that is, the cumulative lighting time and the lighting error. Good.

  In the present embodiment, each message is projected onto the screen SC. However, the message may be displayed on an operation screen of the operation panel 44 provided in the main body of the projector 1. When displaying on the operation screen, the processing of FIG. 3 can be executed without turning on the lamp. And if it is set as the structure which does not light a lamp | ramp, you may employ | adopt the temperature fuse which blows when predetermined temperature, for example, exceeds 50 degree | times, for the 1st fuse 5a and the 2nd fuse 6a of this embodiment. Normally, when the lamp is turned on, the temperature in each lamp unit 5 and 6 becomes high, so that each fuse is blown when each lamp is lit once. For this reason, each lamp may be turned on for the first time in step S29.

  In this embodiment, the warning message, the end of life message, and the confirmation message are all projected on the screen SC, but it is not always necessary to project them. For example, a similar voice message may be output from the speaker 36. If a voice message is output, the message can be transmitted to the user even when the lamp is off and projection is not possible.

  In the above-described embodiment, the liquid crystal light valve projector that modulates and projects the light from the light source by the liquid crystal light valves 12R, 12G, and 12B that are light modulators is exemplified, but the present invention adopts other methods. It can also be applied to projectors. Specifically, a projection system using a DMD (Digital Micromirror Device), a so-called DLP (Digital Light Processing) (registered trademark) system. That is, in the DLP method, the light of the lamp that shines in white is condensed by the lens and applied to the DMD, and the light when each mirror of the DMD is tilted to the on state is enlarged by another lens and projected onto the screen. Therefore, the present invention can also be applied to such a projector.

1: projector, 5: first lamp unit, 6: second lamp unit, 7: condensing unit, 8: first lamp unit control unit, 9: second lamp unit control unit, 12R, G, B: Liquid crystal light valve, 13: Projection optical system, 14: Liquid crystal light valve drive unit, 20: Control unit, 30: Input terminal, 31: Lamp information storage unit, 32: Video / audio processing unit, 33: Frame memory, 34 : Video processing unit, 43: Operation signal processing unit, 44: Operation panel, RC: Remote control, SC: Screen.

Claims (7)

A projector having a lamp unit including a lamp and a fuse,
A storage unit for storing the cumulative lighting time of the lamp;
Detecting whether or not the fuse is in a conductive state, and determining a lamp unit in which the fuse is in a non-conductive state as a replaced lamp unit;
When it is detected that the fuse included in the lamp unit after the replacement is in a conductive state, and the cumulative lighting time of the lamp of the replaced lamp unit has not reached the lifetime of the lamp, the lamp unit after the replacement And a use confirmation unit that outputs a confirmation message about the use of the projector. The projector according to claim 1,
The use confirmation unit, after outputting the confirmation message, de-energizes the fuse included in the replaced lamp unit in response to receiving confirmation completion input regarding the use of the replaced lamp unit. Projector featuring. The projector according to claim 1 or 2,
The use confirmation unit makes the fuse included in the replaced lamp unit non-conductive when the cumulative lighting time of the lamp of the replaced lamp unit has reached the lifetime of the lamp. projector. The projector according to any one of claims 1 to 3,
The projector includes a plurality of lamp units, and the storage unit stores a cumulative lighting time of the lamp for each lamp unit,
When the cumulative lighting time of the lamp has reached the lifetime for another lamp unit that is not a replacement target, the use confirmation unit outputs a lifetime reaching message for the other lamp unit. projector. A projector having a lamp unit including a lamp and a fuse,
A storage unit for storing the cumulative lighting time and the presence or absence of occurrence of a lighting error for the lamp;
Detecting whether or not the fuse is in a conductive state, and determining a lamp unit in which the fuse is in a non-conductive state as a replaced lamp unit;
It is detected that the fuse included in the lamp unit after replacement is in a conductive state, the cumulative lighting time of the lamp of the replaced lamp unit has not reached the lamp life time, and the lighting error has occurred. And a use confirmation unit that outputs a confirmation message about the use of the lamp unit after the replacement if not. The projector according to claim 5, wherein
The projector includes a plurality of lamp units, and the storage unit stores a cumulative lighting time of the lamp and occurrence of the lighting error for each lamp unit,
When the cumulative lighting time of the lamp has reached the lifetime for another lamp unit that is not subject to replacement, the use confirmation unit outputs a lifetime reaching message for the other lamp unit, and the other lamp unit When the lighting error has occurred, an error occurrence message is output for the other lamp unit. A projector control method comprising: a lamp unit including a lamp and a fuse; and a storage unit that stores a cumulative lighting time for the lamp,
Detecting whether the fuse is in a conductive state, and determining a lamp unit in which the fuse is in a non-conductive state as a replaced lamp unit;
When it is detected that the fuse included in the lamp unit after the replacement is in a conductive state, and the cumulative lighting time of the lamp of the replaced lamp unit has not reached the lifetime of the lamp, the lamp unit after the replacement And a step of outputting a confirmation message for use of the projector.

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