JP4166195B2 - Projection display device - Google Patents

Description

  The present invention relates to a projection display apparatus such as a liquid crystal projector.

This type of projection-type image display device has a built-in memory that stores the accumulated accumulated lighting time since the lamp was initially turned on. When the accumulated lighting time of the lamp stored in the memory reaches a predetermined time, the lamp can be replaced. What performs a display is known (for example, refer patent document 1).
Japanese Patent Laid-Open No. 4-5622

  When using a projection display apparatus as a rental business for renting such a projection display apparatus, a charge is made according to the usage time of the projection display apparatus, that is, the lighting time of a lamp that is a consumable item. Is preferred.

  However, since rental companies cannot easily check the lamp lighting time between renting and returning the projection display device, it is necessary to read the memory information before and after renting out the rental fee. However, there was a problem that it took time.

  Accordingly, the present invention has been made to solve such a problem, and provides a projection display apparatus that can easily check the lighting time of a lamp from an arbitrary time point to an arbitrary time point. Is an issue.

  Means for solving the above-mentioned problem is that, in a projection-type image display apparatus in which light emitted from a lamp is light-modulated by a light valve and an image is projected by a projection lens, the cumulative lighting time from the initial lighting of the lamp And a control unit that notifies when the accumulated lighting time of the lamp stored in the accumulated lighting time storage unit reaches a predetermined time, and is arbitrarily selected from any first time point. A lighting time storage unit that stores the lighting time of the lamp up to the point of time, and a lighting time output unit that outputs information stored in the lighting time storage unit, and the lighting time storage unit is authenticated by a password The lighting time storage unit that is initialized only when is established, and that is initialized, stores the lighting time from the arbitrary first time point.

  In the means for solving the above-mentioned problems, the control unit may be configured such that the lighting time weight stored in the lighting time storage unit is changeable based on the lamp lighting mode.

  Further, the control unit may be configured such that the lighting time weight stored in the lighting integrated time storage unit is freely changeable based on the lamp lighting mode.

  The control unit may be configured to display information stored in the lighting time storage unit.

  The control unit may be configured to output information stored in the lighting time storage unit to a storage medium.

  Further, the control unit may be configured to be able to output information stored in the lighting time storage unit via a communication function.

  The control unit may include a notification function that notifies when the lighting time of the lamp stored in the lighting time storage unit has reached a preset time.

  In addition, the control unit may include a turn-off function for turning off the lamp after a predetermined time after the notification function is activated.

  According to the first aspect of the present invention, the lamp lighting time from an arbitrary time point to an arbitrary time point can be stored and the information can be output. Thus, it is possible to easily check the lighting time of the lamp after the operation.

  According to the configuration of the second aspect of the present invention, since the weight of the lamp lighting time when the lamp brightness is reduced can be reduced, the projection display apparatus can be used at a low charge. There are effects such as.

  According to the configuration of the third aspect of the present invention, the weight of the lighting time of the lamp stored in the lighting integrated time storage unit when the brightness of the lamp is reduced can be reduced, so that the lamp is used for a long time. Thus, it is possible to prolong the life of the lamp.

  According to the configuration of the fourth aspect of the present invention, since the lamp lighting time can be displayed, the user can easily check the lamp lighting time while renting the projection display apparatus. There is an effect.

  According to the configuration of the fifth aspect of the present invention, the information stored in the lighting time storage unit is configured to be output to the storage medium, so that the data stored in the storage medium is read by a personal computer or the like. There is an effect that the rental fee can be easily calculated.

  According to the configuration of the sixth aspect of the present invention, there is an effect that the lighting time of the lamp can be easily confirmed by the communication mechanism even when the user is in a remote place.

  According to the configuration of the seventh aspect of the present invention, since the time stored in the lighting time storage unit is notified when it reaches a preset time, the user can recognize that the rentable time is nearing the end. The effect of being able to be made is produced.

  According to the configuration of the eighth aspect of the present invention, since the lamp is turned off when the usable time elapses, there is an effect that unauthorized use of the projection display apparatus can be prevented.

(First embodiment)
A projection image display apparatus according to a first embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, the projection display apparatus of the present invention includes a main body case 1 incorporating a display optical system such as a lighting device 4 described later, and a projection lens 2 that is disposed in front of the main body case 1 and projects an image. And an operation unit 3 for adjusting the projected image.

  As shown in FIG. 2, the display optical system includes an illumination device 4 that emits light, an integrator lens 6 that guides light emitted from the illumination device 4 to the entire surface of the liquid crystal light valve 5, an integrator lens 6, and the liquid crystal light valve 5. The dichroic mirror 7 is disposed between the dichroic mirror 7 for splitting the light into the light in the red wavelength band, the light in the green wavelength band, and the light in the blue wavelength band. A liquid crystal light valve 5 (image light), a cross dichroic prism 8 that combines the light transmitted through each liquid crystal light valve 5 into color image light, and a projection lens 2 that enlarges and projects the color image light. ing.

  The illumination device 4 includes four light sources 4a, 4b, 4c, and 4d facing each other, a first mirror 9a disposed between the light sources 4a and 4b, and a second mirror 9b disposed between the light sources 4c and 4d. It is configured. Each light source includes a lamp 10 such as an ultra-high pressure mercury lamp, a metal halide lamp, or a xenon lamp. The irradiation light is emitted as parallel light by the parabolic reflector 11 and guided to the integrator lens 6.

  The integrator lens 6 is composed of a pair of fly-eye lenses 6a and 6b that are substantially perpendicular to the optical axis, and each pair of lenses guides light emitted from the illumination device 4 to the entire surface of the liquid crystal light valve 5 described later. It has become. As a result, the partial luminance unevenness existing in the illumination device 4 can be averaged, and the light quantity difference between the center and the periphery of the screen can be reduced. The light passing through the integrator lens 6 is guided to the dichroic mirror 7 after passing through the polarization conversion device 12 and the condenser lens 13.

  The dichroic mirror 7 includes a first dichroic mirror 7a and a second dichroic mirror 7b. The liquid crystal light valve 5 includes a first liquid crystal light valve 5a that transmits light of red wavelength, a second liquid crystal light valve 5b that transmits light of green wavelength, and a third liquid crystal valve 5c that transmits light of blue wavelength. It consists of and.

  The first dichroic mirror 7a transmits light having a red wavelength and reflects light having a wavelength region of cyan (green + blue). The light in the red wavelength band transmitted through the first dichroic mirror 7a is reflected by the reflecting mirror 15 via the concave lens 14, and the optical path is changed. The red light reflected by the reflection mirror 15 is optically modulated by passing through the lens 16 and passing through the transmissive first liquid crystal light valve 5a for red light. On the other hand, the light in the cyan wavelength band reflected by the first dichroic mirror 7a is guided to the second dichroic mirror 7b through the concave lens 17.

  The second dichroic mirror 7b transmits light in the blue wavelength band and reflects light in the green wavelength band. The light in the green wavelength band reflected by the second dichroic mirror 7b is guided through the lens 18 to the transmissive second liquid crystal light valve 5b for green light, and is modulated by being transmitted therethrough. The blue wavelength band light transmitted through the second dichroic mirror 7 b passes through the relay lens 19, the total reflection mirror 20, the relay lens 21, the reflection mirror 22, and the relay lens 23, and is a transmissive third liquid crystal light for blue light. The light is modulated by being guided to and transmitted through the valve 5c.

Each of the liquid crystal light valves 5a, 5b, and 5c is a panel in which liquid crystal is sealed between the incident-side polarizing plates 5a ₁ , 5b ₁ , 5c ₁ and a pair of glass substrates (pixel electrodes and alignment films are formed). Parts 5a ₂ , 5b ₂ , 5c ₂ and emission side polarizing plates 5a ₃ , 5b ₃ , 5c ₃ .

  The modulated light (each color video light) modulated through the liquid crystal light valves 5a, 5b, 5c is synthesized by the cross dichroic prism 8 to become color video light. This color image light is magnified by the projection lens 2 and projected and displayed on a screen (not shown).

  The control of the present invention will be described in detail based on the block diagram shown in FIG. The control unit 24 includes an information input unit 25 that inputs information such as a video and a personal computer by operating the operation unit 3, an information output unit 26 that outputs video and the like, a lamp driving unit 27 that turns on or off the lamp 10, and A lighting integrated time storage unit 28 that stores a cumulative lighting time from the initial lighting of the lamp 10, a lighting time storage unit 29 that stores a lighting time of the lamp 10 from an arbitrary time to an arbitrary time, and a lighting time storage The unit 29 includes a lighting time output unit 30 that outputs information such as the lighting time of the lamp 10 stored in the unit 29, and an eco mode input unit 31 that reduces the brightness of the lamp 10.

  When the operation unit 3 is operated, information such as a video and a personal computer is input to the control unit 24 via the information input unit 25. When the control unit 24 recognizes the input from the information input unit 25, the control unit 24 operates the lamp driving unit 27 to turn on the lamps 10 of the four light sources 4 a, 4 b, 4 c, and 4 d and the information output unit 26 controls the projection lens 2. Project an image via At this time, the cumulative lighting time of the lamp 10 since the initial lighting of the lamp 10 is stored in the lighting integrated time storage unit 28. When the accumulated lighting time of the lamp 10 stored in the accumulated lighting time storage unit 28 reaches a predetermined time, the warning lamp 32 is blinked to indicate the necessity for lamp replacement.

  When renting such a projection display apparatus as a rental business, operating the lighting time measurement input unit 33 disposed on the side surface of the main body case 1 lights the lighting time of the lamp 10 from the next lighting of the lamp 10. Stored by the time storage unit 29. At this time, the start of measuring the lighting time of the lamp 10 is displayed on the display unit 34 disposed adjacent to the lighting time measurement input unit 33. In addition, since there is a possibility that the user inadvertently initializes the information in the lighting time storage unit 29 during use, the information in the lighting time storage unit 29 is not easily initialized and is set by the rental company. The password is initialized by inputting the existing password into the password input unit 35 including a numeric keypad.

  When the user wants to check the current lighting time of the lamp 10, the lighting time of the lamp 10 is displayed on the display unit 34 by operating the display switching unit 36. Further, every time the display switching unit 36 is operated, the display of the lighting time of the lamp 10, the display of the lighting integrated time of the lamp 10, and the non-display are switched in order.

  The eco-mode input unit 31 is operated when it is desired to use the projection display apparatus at a low price even if the image projected from the projection lens 2 is somewhat dark. In this way, the voltage applied to the lamp 10 is reduced, and the weight of the lighting time of the lamp 10 is reduced according to the reduced voltage. As a result, the user can use the projection display apparatus at a low charge. When the eco mode is entered, a message to that effect is displayed on the display unit 34. When canceling the eco mode, the eco mode input unit 31 is operated again to switch to the normal brightness mode. Furthermore, since the weight of the lighting time of the lamp 10 stored in the lighting integrated time storage unit 28 can be reduced by selecting the eco mode, the lamp 10 can be used for a long time, and the life of the lamp 10 can be extended. Can be achieved.

  When the user finishes using the projection display apparatus and returns it to the rental company, the rental company inserts a USB memory (not shown) into the USB terminal 37 and sets the lighting time of the lamp 10 stored in the lighting time storage unit 29. Store in USB memory. The rental fee can be easily calculated by reading this data with a personal computer or the like. When the rental fee is settled, the password input unit 35 is operated to input the password, and the information on the lamp 10 stored in the lighting time storage unit 29 is initialized to prepare for the next rental.

  In this way, the lighting time storage unit 29 can store the lighting time of the lamp 10 from an arbitrary time point to an arbitrary time point, and can output the information, so that the projection display apparatus can be rented. It is possible to easily check the lighting time of the lamp 10 at the time. Further, since the lighting time of the lamp 10 can be displayed on the display unit 34, the user can easily check the lighting time of the lamp 10 while renting the projection display apparatus.

  Further, since the information stored in the lighting time storage unit 29 cannot be initialized unless the rental agent inputs a password, the user erroneously initializes the information stored in the lighting time storage unit 29. Can be prevented.

  In addition, since the information stored in the lighting time storage unit 29 is configured to be output to a storage medium such as a USB memory, a rental fee can be easily obtained by reading the data stored in the storage medium with a personal computer or the like. Can be calculated.

  In addition, since the brightness of the lamp 10 can be reduced by the eco-mode input unit 31 and the weight of the lighting time of the lamp 10 can be reduced, the projection display apparatus can be used at a low charge.

  In the first embodiment, the USB memory is used as the storage medium for outputting the information stored in the lighting time storage unit 29. However, the present invention is not limited to this. Other storage media such as an FD may be used.

  In the first embodiment, the brightness of the lamp 10 is reduced by one step by operating the eco mode input unit 31, and the weight of the lighting time of the lamp 10 is reduced accordingly. However, the present invention is limited to this. is not. The brightness of the lamp 10 may be adjusted in multiple steps, and the weight of the lighting time of the lamp 10 may be reduced according to the degree to which the brightness of the lamp 10 is reduced.

  Moreover, in 1st Embodiment, although comprised with the password as a misinitialization prevention function of the information which the lighting time memory | storage part 29 has memorize | stored, it is not limited to this. For example, the information stored in the lighting time storage unit 29 may be configured to be initialized only when a dedicated key stored by the rental company is inserted.

(Second Embodiment)
FIG. 4 shows a projection display apparatus according to the second embodiment. Although the projection display apparatus according to the first embodiment is configured to charge according to the lighting time of the lamp 10, the projection display apparatus according to the second embodiment uses the lamp 10 that has been agreed with the user in advance. It is configured to charge in advance according to time.

  In the projection display apparatus according to the second embodiment, a rental time setting unit 38 and a warning lamp 30 are arranged. When renting the projection display apparatus, the rental company confirms the desired usage time with the user. Then, the rental time is set by operating the rental time setting unit 38, and after operating the lighting time measurement input unit 33, a charge is collected in advance from the user.

  The user can confirm the remaining usable time because the lighting time of the lamp 10 is displayed on the display unit 34 by operating the display switching unit 36. When the lighting time of the lamp 10 reaches the time set by the rental time setting unit 38, the warning lamp 39 blinks to give a warning. After that, when it is continuously used for a predetermined time, the lamp 10 is turned off to prohibit the use of the projection display apparatus. When the user returns the projection display apparatus to the rental agent, the password input unit 35 is operated to initialize the information stored in the lighting time storage unit 29 and prepare for the next rental as in the first embodiment. .

In this way, the warning lamp 39 blinks when the time set in advance by the rental time setting unit 38 is reached, so that the user can recognize that the rental available time is nearing the end. Further, if the lamp is continuously used for a predetermined time thereafter, the lamp 10 is turned off, so that unauthorized use by the user can be prevented.
(Third embodiment)
FIG. 5 shows a third embodiment of the present invention. The first embodiment or the second embodiment is an embodiment corresponding to a short-term rental of the projection display apparatus, but the third embodiment is a form corresponding to a long-term rental.

  The projection display apparatus according to the third embodiment has a communication function (not shown) and is connected to a rental company via a wireless LAN (not shown). The information stored in the lighting time storage unit 29 is periodically transmitted to the rental agent side.

  Therefore, the rental company can charge based on the information stored in the lighting time storage unit 29 that is periodically transmitted. This charge can be easily made even if the user is in a remote place if credit settlement is used. Further, since the life of the lamp 10 can be determined based on the information stored in the lighting integrated time storage unit 28, the information stored in the lighting integrated time storage unit 28 is also transmitted periodically. Good. As a result, since the life of the lamp 10 can be grasped in advance, the rental company can replace the lamp 10 without inconvenience to the user such as the lamp 10 reaching the end of its life during use. Can be done in advance.

1 is an external perspective view of a projection display apparatus according to a first embodiment of the present invention. It is a block diagram of the display optical system of the projection type video display apparatus. It is a block diagram of the control part of the projection type video display apparatus. It is an external appearance perspective view of the projection type video display apparatus of 2nd Embodiment of this invention. It is an external appearance perspective view of the projection type video display apparatus of 3rd Embodiment of this invention.

Explanation of symbols

2 Projection lens 5 Liquid crystal light valve (light valve)
DESCRIPTION OF SYMBOLS 10 Lamp 24 Control part 28 Lighting integration time memory | storage part 29 Lighting time memory | storage part 30 Lighting time output part 39 Warning light

Claims (8)

In a projection display apparatus that modulates light emitted from a lamp with a light valve and projects an image with a projection lens, a lighting integrated time storage unit that stores a cumulative lighting time from the initial lighting of the lamp; and a control unit cumulative illuminating time of the lamp in which the cumulative illuminating time storage unit is storing performs notification upon reaching a predetermined time, the lamp lighting time to an arbitrary point in time from any of the first point in time a lighting time storage unit for storing, together with and a lighting time output unit for outputting information the lighting time storage unit is storing, the lighting time storage unit is seen initialized when password authentication has been made The initialized lighting time storage unit stores the lighting time from the arbitrary first time point . 2. The projection display apparatus according to claim 1, wherein the control unit is configured to freely change the weight of the lighting time stored in the lighting time storage unit based on a lamp lighting mode. 3. The projection display apparatus according to claim 2, wherein the controller is configured to change the weight of the lighting time stored in the lighting integrated time storage unit based on the lamp lighting mode. 4. The projection display apparatus according to claim 1, wherein the control unit is configured to display information stored in a lighting time storage unit. 5. 5. The projection image display according to claim 1, wherein the control unit is configured to be capable of outputting information stored in the lighting time storage unit to a storage medium. apparatus. The projection type according to any one of claims 1 to 5, wherein the control unit is configured to be able to output information stored in a lighting time storage unit via a communication function. Video display device. Wherein the control unit according to claim 1 to claim, characterized in that it comprises a notification function of notifying when a lighting time of a lamp lighting time storage unit stores has reached the preset time 6 The projection type image display apparatus according to any one of the above. 8. The projection display apparatus according to claim 7 , wherein the control unit has a light-off function for turning off the lamp after a predetermined time after the notification function is activated.