WO2014057560A1 - Projecteur et procédé de détection - Google Patents

Projecteur et procédé de détection Download PDF

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Publication number
WO2014057560A1
WO2014057560A1 PCT/JP2012/076342 JP2012076342W WO2014057560A1 WO 2014057560 A1 WO2014057560 A1 WO 2014057560A1 JP 2012076342 W JP2012076342 W JP 2012076342W WO 2014057560 A1 WO2014057560 A1 WO 2014057560A1
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WO
WIPO (PCT)
Prior art keywords
lighting
lamp
lighting time
time
light source
Prior art date
Application number
PCT/JP2012/076342
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English (en)
Japanese (ja)
Inventor
巳千男 小林
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to JP2014540690A priority Critical patent/JP5999788B2/ja
Priority to PCT/JP2012/076342 priority patent/WO2014057560A1/fr
Publication of WO2014057560A1 publication Critical patent/WO2014057560A1/fr

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Definitions

  • the present invention relates to a projector that detects a replacement timing for replacing a light source.
  • a projector used for watching a movie or giving a presentation usually includes a discharge lamp such as a high-pressure mercury lamp, a metal halide lamp, or a halogen lamp as a light source.
  • a discharge lamp such as a high-pressure mercury lamp, a metal halide lamp, or a halogen lamp as a light source.
  • the above lamps are suitable for projector light sources that require a certain level of brightness because of their high brightness, but on the other hand, the longer the lighting time, the lower the brightness and the projected image can be viewed. There are problems such as difficulty in lightning and facilitation of light loss and rupture. For this reason, in a projector equipped with a lamp, it is necessary to replace the lamp at an appropriate timing.
  • Patent Document 1 discloses a projection apparatus that notifies that the lamp lighting time has reached the end of its life.
  • This projection device calculates the lamp wear level based on the lamp turn-on time, and notifies that the lamp turn-on time has reached the end of its life when the wear degree exceeds a certain value. As a result, the user can grasp the replacement timing for replacing the lamp.
  • Patent Document 2 discloses a light source device capable of extending the life of the lamp.
  • a lighting mode for lighting a lamp a rated voltage is supplied to the lamp, a steady lighting mode for lighting the lamp, and an eco lighting mode for lighting the lamp by supplying power lower than the rated voltage to the lamp.
  • the life of the lamp becomes longer than when the lamp is lit in the steady lighting mode. Therefore, the life of the lamp can be extended by selecting an appropriate lighting mode according to ambient brightness and the like.
  • the present invention has been made in view of the above problems, and an object thereof is to provide a projector and a detection method capable of accurately grasping the replacement timing for replacing the lamp.
  • the projector measures a light source, a light source driving unit that supplies lighting power to the light source to turn on the light source, a lighting control unit that adjusts the lighting power, and a lighting time when the light source is turned on. And a calculation unit that obtains a corrected lighting time obtained by correcting the lighting time based on the lighting time and the lighting power, and calculates a consumption degree of the light source according to the corrected lighting time.
  • a detection method is a detection method for detecting a replacement timing of a light source of a projector, The lighting power supplied to the light source is adjusted, the lighting time when the light source is turned on is measured, the corrected lighting time obtained by correcting the lighting time is obtained based on the lighting time and the lighting power, and the corrected lighting time In accordance with the calculation, the degree of wear of the light source is calculated.
  • FIG. 1 is a block diagram having a configuration of a projector according to an embodiment of the present invention.
  • the projector includes a lamp 1, a projection unit 2, a lamp driving unit 3, a lighting control unit 4, a nonvolatile memory 5, a calculation unit 6, and a display unit 7.
  • the lamp 1 is a light source that generates light.
  • the projection unit 2 displays an image according to the video signal on the screen by modulating the light generated by the lamp 1 according to the video signal and projecting it on a screen (not shown).
  • the lamp driving unit 3 is a light source driving unit that turns on the lamp 1 by supplying lighting power to the lamp 1. Specifically, the lamp driving unit sets one of a plurality of lighting modes with different lighting power supplied to the lamp 1 and supplies the lighting voltage corresponding to the set lighting mode to the lamp 1. The lamp 1 is turned on.
  • the lighting modes include a steady lighting mode in which a predetermined rated power is supplied to the lamp 1 and an eco lighting mode in which eco power smaller than the rated power is supplied to the lamp 1.
  • the eco lighting mode in which eco power smaller than the rated power is supplied to the lamp 1 is not limited to one, and there may be a plurality of modes.
  • the lighting control unit 4 adjusts the lighting power supplied to the lamp 1 by the lamp driving unit 3. Specifically, the lighting control unit 4 adjusts the lighting power supplied to the lamp 1 by selecting one of a plurality of lighting modes and setting the selected lighting mode in the lamp driving unit 3.
  • the projector is provided with a switch (not shown) for selecting a lighting mode, and the lighting control unit 4 receives a selection signal for selecting one of a plurality of lighting modes from the switch, and the selection is performed.
  • the lighting mode selected according to the signal is set in the lamp driving unit 3.
  • the non-volatile memory 5 stores lamp remaining amount information indicating the remaining amount of lamp, which is the remaining time during which the lamp 1 can be lit, as the degree of wear of the lamp 1.
  • the remaining lamp information indicates the ratio of the remaining time at the present time to the remaining time at the time when the use of the lamp 1 is started as the remaining lamp power. In this case, the time when the lamp remaining amount becomes 0% is the replacement timing for replacing the lamp 1.
  • the nonvolatile memory 5 stores the lamp lighting time for each lighting mode.
  • the lighting time of the lamp may be managed with a plurality of lighting modes corresponding to the adjacent lighting power as one group. .
  • the lifetime can be set to be substantially the same.
  • the calculation unit 6 measures the lighting time when the lamp 1 is turned on. Then, the calculation unit 6 obtains a corrected lighting time by correcting the lighting time based on the lighting time and the lighting power supplied to the lamp 1, and the lamp 1 is consumed according to the corrected lighting time. Calculate the degree. When the degree of wear of the lamp 1 reaches a predetermined value, the calculation unit 6 determines that it is time to replace the lamp, and displays timing notification information indicating that the replacement time is reached on the display unit 7. The user is notified that the replacement timing has come.
  • the calculation unit 6 calculates the remaining amount of lamp as the degree of wear of the lamp 1. Further, it is assumed that the predetermined value is 0%. In this case, when the remaining amount of the lamp reaches a predetermined value of 0%, the calculation unit 6 notifies the user that the replacement timing has come.
  • the notification method for notifying that the replacement timing has come is not limited to the above example.
  • the calculation unit 6 uses the OSD (On-Screen Display) function to superimpose timing notification information on the projected image or turn on an error notification LED or the like to indicate that the replacement timing has been reached. May be notified to the user.
  • OSD On-Screen Display
  • FIG. 2 is a diagram showing the relationship between the lighting time of the lamp 1 and the luminance. Specifically, FIG. 2 shows the relationship between the lighting time and the luminance when the lamp 1 is lit in the steady lighting mode, and the relationship between the lighting time and the luminance when the lamp 1 is lit in the eco lighting mode. FIG. Further, the luminance in FIG. 2 is shown as a ratio to the initial luminance which is the initial luminance of the lamp 1.
  • the wider the gap between the lamp electrodes the larger the light emitting point of the lamp, the lower the light utilization efficiency and the lower the luminance. Accordingly, when the luminance of the lamp reaches a predetermined ratio with respect to the initial luminance, for example, about 50%, the lamp is replaced because it is impossible to obtain the target luminance performance. That is, the lamp lighting time until the lamp brightness reaches 50% of the initial brightness is defined as the lamp life, and when the lamp lighting time reaches the life, the lamp is replaced. However, the life of the lamp is set so that it is less than the lamp lighting time until the voltage between the electrodes reaches the allowable value. A tolerance value is set.
  • the luminance of the lamp 1 gradually decreases with respect to the lighting time of the lamp 1, but the luminance reduction rate increases as the lighting power increases. For this reason, the lifetime that is the lighting time until the luminance reaches 50% is longer when the lamp 1 is lit in the eco lighting mode than when the lamp is lit in the steady lighting mode.
  • the lifetime of the lamp 1 is assumed to be 1000 hours when the lamp 1 is lit in the steady lighting mode, and 2000 hours when the lamp 1 is lit in the eco lighting mode.
  • FIG. 3 is a diagram for explaining the above-mentioned problem in more detail.
  • the lighting time of the lamp 1 and the distance between the electrodes of the lamp 1 are as follows.
  • the relationship with the lamp voltage which is a voltage is shown.
  • the lifetime of the lamp 1 is 1000 hours when the lamp 1 is lit in the steady lighting mode, and 2000 hours when the lamp 1 is lit in the eco lighting mode. Further, it is assumed that the allowable value of the lamp voltage is 150V.
  • the dotted line A in FIG. 3 shows the lamp voltage immediately after the lighting mode is switched from the eco lighting mode to the steady lighting mode
  • the dotted line B in FIG. 3 is lit when the lamp 1 is lit for 2000 hours in the eco lighting mode.
  • the lamp voltage after the mode is switched from the eco lighting mode to the steady lighting mode is shown.
  • the dotted line A is a translation of the line indicating the lamp voltage in the eco lighting mode
  • the dotted line B is a translation of the line indicating the lamp voltage in the steady lighting mode.
  • the lamp voltage reaches the allowable value of 150 V when the lighting time reaches 1000 hours, which is the lifetime, and the lamp 1 is lost or ruptured. It tends to occur.
  • the allowable value is set with a margin, there is no immediate loss of light or explosion.
  • the lamp voltage is lower than the allowable value because the power supplied to the lamp 1 is low even when the lighting time reaches 2000 hours, which is the lifetime.
  • the lamp 1 can be turned on for up to 3000 hours.
  • the dotted line C shows the relationship between the excess lighting time, which is the lighting time of the lamp 1 that can be lit even when the lifetime is exceeded, and the luminance at the excess lighting time in the eco lighting mode. It is assumed that the excess lighting time is 1000 hours. That is, in the eco lighting mode, the lamp 1 can be lit for 3000 hours. However, as shown in FIG. 3, when the lamp is lit for 2000 hours or more, the lamp brightness is 50% or less of the initial brightness. However, the eco lighting mode is a mode that does not place importance on the brightness. Absent.
  • the calculation unit 6 corrects the lighting time of the lamp 1 according to the lighting mode, and uses the corrected lighting time.
  • the remaining amount of the lamp may be calculated based on a certain corrected lighting time.
  • the remaining lamp amount is displayed as a percentage [%], the remaining lamp amount is R ⁇ 100 [%].
  • 1/3 of the eco lighting time Te is the corrected lighting time
  • the steady lighting time Tn is the corrected lighting time as it is.
  • the calculation unit 6 obtains a corrected lighting time in which the lighting time is corrected based on the lighting time and the lighting power of the lamp 1, and according to the corrected lighting time, By calculating the degree of wear, it is possible to appropriately notify that the replacement timing has come.
  • the calculation unit 6 determines a correction formula for correcting the lighting time according to the lighting power, according to the lighting time, and obtains a corrected lighting time using the determined correction formula. More specifically, the calculation unit 6 first obtains a corrected lighting time using a first correction formula determined in advance as a correction formula, and when the eco lighting time is equal to or greater than a predetermined threshold value, A corrected lighting time is obtained using a second correction formula different from the first correction formula.
  • FIG. 6 is a diagram showing an example of the relationship between the lighting time and the remaining lamp power in the present embodiment.
  • the remaining amount of the lamp is a predetermined value, for example, 1% in each of the state where the lamp 1 is lit for 990 hours in the steady lighting mode and the state where the lamp 1 is lit for 2000 hours in the eco lighting mode. It becomes.
  • the predetermined value of the remaining amount of the lamp is set based on the relationship between the lamp lighting time until the voltage between the lamp electrodes reaches an allowable value and the time at which the light loss or explosion actually occurs. The predetermined value can be increased.
  • the remaining amount of the lamp becomes 1% when the lamp 1 is lit for 2000 hours in the eco lighting mode. Therefore, when the lighting mode is switched to the steady lighting mode at this time, Only the remaining 10 hours can be lit. Further, since the lighting time in the steady lighting mode after the lifetime of the lamp 1 is exceeded can be set to a short time, problems such as explosion of the lamp 1 are less likely to occur. Note that the notification that the replacement timing has come is made when the remaining lamp amount becomes 0%.
  • FIG. 7 is a flowchart for explaining the operation of the projector of this embodiment.
  • the lighting control unit 4 selects a steady lighting mode or an eco lighting mode as a lighting mode to be set in the lamp driving unit 3, and the selected lighting mode is given to the lamp driving unit 3.
  • the lamp driving unit 3 is operated. Thereby, the lighting power corresponding to the lighting mode set in the lamp driving unit 3 is supplied to the lamp 1, the lamp 1 is turned on, and an image is displayed on the screen (step S701).
  • the timing of starting image projection is, for example, the timing when the projector is activated or the timing when the projector returns from the sleep mode.
  • the lighting control unit 4 When the lamp driving unit 3 is operated, the lighting control unit 4 notifies the calculation unit 6 of mode information indicating the lighting mode set in the lamp driving unit 3.
  • the calculation unit 6 acquires the lamp lighting time and lamp remaining amount information corresponding to each lighting mode from the nonvolatile memory 5 and starts measuring the lamp lighting time (step S702).
  • the calculation unit 6 adds the measured lighting time to the lamp lighting time corresponding to the lighting mode set in the lamp driving unit 3 acquired from the nonvolatile memory 5.
  • the calculation unit 6 determines whether or not the eco lighting time Te is equal to or greater than a predetermined threshold, for example, 2000 hours that is the lamp life in the eco lighting mode (step S703).
  • the determined eco lighting time is the eco lighting time in the eco lighting mode that operates with the minimum eco power
  • the threshold value is the eco lighting mode (with the minimum eco power). The life of the lamp in the operating eco lighting mode) is used. With minimum eco-power, the life of eco-lighting mode is maximized.
  • the calculation unit 6 uses the first correction formula to correct the lighting time according to the lighting mode indicated by the mode information to obtain the lighting correction time. Then, the calculation unit 6 updates the remaining amount of lamp based on the lighting correction time, and stores the remaining lamp amount information indicating the updated remaining lamp amount in the nonvolatile memory 5 (step S704).
  • the calculation unit 6 uses the second correction formula to correct the lighting time according to the lighting mode indicated by the mode information to obtain the lighting correction time. Then, the calculation unit 6 updates the remaining lamp amount based on the lighting correction time, and stores the remaining lamp information indicating the updated remaining lamp amount in the nonvolatile memory 5 (step S705).
  • step S704 or S705 the calculation unit 6 determines whether or not the updated lamp remaining amount is 0% or less (step S706).
  • the calculation unit 6 displays timing notification information on the display unit 7 (step S707).
  • step S708 the calculation unit 6 determines whether or not the measurement of the lamp lighting time is to be ended. .
  • the lighting control unit 4 stops the operation of the lamp driving unit 3 and finish information indicating that the measurement of the lighting time is ended. Is notified to the calculation unit 6.
  • the calculation unit 6 determines to end the lamp lighting time measurement, and when the end information is not notified, the calculation unit 6 determines not to end the lamp lighting time measurement.
  • the calculation unit 6 returns to the process of step S703 when the measurement of the lighting time is not finished, and ends the process when the measurement of the lighting time is finished.
  • step S707 the lighting control unit 4 may stop the operation of the lamp driving unit 3 after a predetermined time has elapsed. If the timing notification information is displayed in step S707, the process may be terminated without moving to step 708.
  • the degree of wear of the lamp 1 is calculated according to the corrected lighting time in which the lighting time is corrected based on the lighting time of the lamp 1 and the lighting power supplied to the lamp. Therefore, even when the appropriate replacement timing of the lamp 1 differs according to the lighting power, it is possible to calculate the degree of wear that appropriately reflects the replacement timing. Therefore, it is possible to accurately grasp the replacement timing for replacing the lamp.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Projection Apparatus (AREA)

Abstract

L'invention concerne un projecteur et un procédé de détection au moyen desquels il est possible de vérifier de façon appropriée une périodicité de remplacement selon laquelle une lampe est remplacée. Une unité (3) d'excitation de source lumineuse fournit une puissance d'éclairage à une source lumineuse (1) et allume la source lumineuse (1). Une unité (4) de commande d'éclairage règle la puissance d'éclairage. Une unité (6) de calcul mesure le temps d'éclairage pendant lequel la source lumineuse (1) est allumée, obtient, en se basant sur le temps d'éclairage et la puissance d'éclairage, un temps d'éclairage de correction par lequel le temps d'éclairage est corrigé, et calcule le degré de consommation de la source lumineuse (1) en fonction dudit temps d'éclairage de correction.
PCT/JP2012/076342 2012-10-11 2012-10-11 Projecteur et procédé de détection WO2014057560A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2014540690A JP5999788B2 (ja) 2012-10-11 2012-10-11 プロジェクタおよび検知方法
PCT/JP2012/076342 WO2014057560A1 (fr) 2012-10-11 2012-10-11 Projecteur et procédé de détection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/076342 WO2014057560A1 (fr) 2012-10-11 2012-10-11 Projecteur et procédé de détection

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WO2014057560A1 true WO2014057560A1 (fr) 2014-04-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017090644A (ja) * 2015-11-10 2017-05-25 コニカミノルタ株式会社 画像形成装置
JP2017130749A (ja) * 2016-01-19 2017-07-27 セイコーエプソン株式会社 プロジェクター及びプロジェクターの制御方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005009035A1 (fr) * 2003-07-18 2005-01-27 Matsushita Electric Industrial Co., Ltd. Dispositif d'affichage d'image
JP2007095427A (ja) * 2005-09-28 2007-04-12 Casio Comput Co Ltd 光源寿命判定装置及び光源寿命判定方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002287243A (ja) * 2001-03-23 2002-10-03 Seiko Epson Corp ランプ寿命表示

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005009035A1 (fr) * 2003-07-18 2005-01-27 Matsushita Electric Industrial Co., Ltd. Dispositif d'affichage d'image
JP2007095427A (ja) * 2005-09-28 2007-04-12 Casio Comput Co Ltd 光源寿命判定装置及び光源寿命判定方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017090644A (ja) * 2015-11-10 2017-05-25 コニカミノルタ株式会社 画像形成装置
JP2017130749A (ja) * 2016-01-19 2017-07-27 セイコーエプソン株式会社 プロジェクター及びプロジェクターの制御方法

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Publication number Publication date
JPWO2014057560A1 (ja) 2016-08-25
JP5999788B2 (ja) 2016-09-28

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