WO2011096077A1 - Projection display device and power supply system for same - Google Patents

Projection display device and power supply system for same Download PDF

Info

Publication number
WO2011096077A1
WO2011096077A1 PCT/JP2010/051770 JP2010051770W WO2011096077A1 WO 2011096077 A1 WO2011096077 A1 WO 2011096077A1 JP 2010051770 W JP2010051770 W JP 2010051770W WO 2011096077 A1 WO2011096077 A1 WO 2011096077A1
Authority
WO
WIPO (PCT)
Prior art keywords
unit
power
storage unit
remaining capacity
projection display
Prior art date
Application number
PCT/JP2010/051770
Other languages
French (fr)
Japanese (ja)
Inventor
裕 加藤
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 PCT/JP2010/051770 priority Critical patent/WO2011096077A1/en
Priority to JP2011552627A priority patent/JP5322328B2/en
Publication of WO2011096077A1 publication Critical patent/WO2011096077A1/en

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof

Definitions

  • the present invention relates to a projection display device provided with a storage battery and a power supply system thereof.
  • Projection display devices that project and display images on a screen or the like are used for various purposes such as planning proposals, product descriptions, and business reports. Even if the projection display device is relatively small, it can display a large screen. In recent years, a portable projection display device has been developed.
  • the storage battery increases the cost, volume, weight, etc. of the projection display device.
  • the storage battery can be reduced in volume and weight if its capacity is reduced, but this shortens the time during which the projection display device can operate continuously. On the other hand, if the capacity of the storage battery is increased, its volume and weight increase, so that the cost, volume and weight of the projection display device also increase.
  • an object of the present invention is to provide a projection display device and its power supply system that can suppress the cost, volume, and weight of the storage battery.
  • a projection display device of the present invention is a projection display device that projects and displays an image
  • a power storage unit including a storage battery
  • a drive unit for supplying required power to a part used in the projection display of the image
  • a remaining capacity detection unit that detects a remaining capacity value that is the amount of electricity stored in the power storage unit
  • a connection unit that is an interface for supplying power supplied from the outside to the drive unit, The power supplied from the power storage unit to the drive unit is turned on or off, the power supplied from the power storage unit to the outside through the connection unit is turned on or off, and the power is supplied from the outside to the drive unit through the connection unit.
  • a switch unit for turning on or off the supplied power In the normal display mode for projecting and displaying the image, when the remaining capacity value of the power storage unit detected by the remaining capacity detection unit is larger than a preset target value, the power storage unit is controlled by controlling the switch unit. When the remaining capacity value is less than or equal to the target value, the power is supplied from the power storage unit included in the device to another device connected via the connection unit.
  • An adjustment unit that transmits a power supply start command and controls the switch unit to supply power supplied from the device to the drive unit via the connection unit; Have
  • the power supply system of the projection display device of the present invention is A plurality of the projection display devices are provided.
  • the plurality of projection display devices are connected to each other through the connection unit so that power can be exchanged.
  • FIG. 1 is a block diagram showing a configuration example of a projection display apparatus according to the present invention.
  • FIG. 2 is a block diagram illustrating a configuration example of the switch unit illustrated in FIG.
  • FIG. 3 is a block diagram showing a configuration example of the power supply system of the present invention.
  • FIG. 4 is a flowchart showing a processing procedure in the charging mode of the projection display apparatus shown in FIG.
  • FIG. 5A is a flowchart showing a processing procedure in the power saving mode of the projection display apparatus shown in FIG.
  • FIG. 5B is a flowchart showing a processing procedure in the power saving mode of the projection display apparatus shown in FIG.
  • FIG. 6A is a flowchart showing a processing procedure in the normal display mode of the projection display apparatus shown in FIG.
  • FIG. 6B is a flowchart showing a processing procedure in the normal display mode of the projection display apparatus shown in FIG.
  • FIG. 7 is a timing chart showing an example of the operation of the power supply system shown in FIG.
  • a plurality of projection display devices each provided with a storage battery are connected so that power can be exchanged, and the storage batteries provided in each projection display device can be shared.
  • FIG. 1 is a block diagram showing an example of the configuration of the projection display device of the present invention.
  • the projection display device 2 of the present invention includes an adjustment unit 201, a remaining capacity detection unit 202, a charging unit 203, a power storage unit 204, an adjustment drive unit 205, a switch unit 206, a storage unit 207, a remaining capacity.
  • the light source units 401R, 401G, and 401B emit three primary colors of red (R), green (G), and blue (B).
  • RGB red
  • G green
  • B blue
  • an LED Light Emitting Diode
  • the light source driving units 210R, 210G, and 210B supply necessary power to the light source units 401R, 401G, and 401B. Electric power (DC voltage) is supplied to the light source driving units 210R, 210G, and 210B from the power storage unit 204 or the outside via the switch unit 206.
  • DC voltage Electric power
  • the image signal processing unit 213 performs A / D conversion on an image signal input from the outside, and performs predetermined image signal processing according to the standard of the image signal.
  • the image signal processing driving unit 215 supplies necessary power to the image signal processing unit 213.
  • the image signal processing drive unit 215 is supplied with electric power (DC voltage) from the power storage unit 204 or the outside via the switch unit 206.
  • the spatial light modulation signal generation unit 212 generates an image signal for each color used for modulation of red (R), green (G), and blue (B) light by the spatial light modulation devices 301R, 301G, and 301B.
  • the spatial light modulation signal generation drive unit 214 supplies required power to the spatial light modulation signal generation unit 212.
  • the spatial light modulation signal generation drive unit 214 is supplied with electric power (DC voltage) from the power storage unit 204 or the outside via the switch unit 206.
  • the spatial light modulation devices 301R, 301G, and 301B use the spatial light modulation signal generation unit 212 to output light of the three primary colors red (R), green (G), and blue (B) output from the light source units 401R, 401G, and 401B. Modulation is performed according to the generated image signal for each color, and image light of each color is output.
  • a transmissive liquid crystal display device is used for the spatial light modulators 301R, 301G, 301B.
  • the cross dichroic prism 601 combines the three primary color image lights output from the spatial light modulators 301R, 301G, and 301B to form a color image.
  • the projection lens 602 projects the color image synthesized by the cross dichroic prism 601 onto the screen.
  • the cooling units 501R, 501G, and 501B are used for cooling the light source units 401R, 401G, and 401B, and suppress, for example, a decrease in light amount due to a temperature increase in the LED junction.
  • a well-known Peltier element can be used for the cooling units 501R, 501G, and 501B.
  • the cooling drive units 209R, 209G, and 209B supply necessary power to the cooling units 501R, 501G, and 501B.
  • the cooling drive units 209R, 209G, and 209B are supplied with electric power (DC voltage) from the power storage unit 204 or the outside via the switch unit 206.
  • the power storage unit 204 includes at least one storage battery.
  • the storage battery for example, a lithium ion (Li-ion) rechargeable battery is used which has a high energy density, a small capacity drop due to self-discharge, and is relatively small and light.
  • the charging unit 203 charges a storage battery included in the power storage unit 204.
  • the charging unit 203 is supplied with electric power (DC voltage) from the outside via the switch unit 206.
  • the connection unit 211 is a DC power line for sharing the power (DC voltage) of the power storage unit 204 with other projection display devices 2 and a signal line for transmitting and receiving information and control signals to and from other projection display devices 2. And an interface unit for connecting the projection display device 2 to each other.
  • the connection unit 211 is preferably configured with a detachable connector or cable.
  • the storage unit 207 is a memory in which a target value that is an index used to control charging / discharging of the storage battery included in the power storage unit 204 by the adjustment unit 201, various setting conditions, and the like are stored in advance.
  • the target value is set using, for example, the value of SOC (State of Charge: the ratio of the charged amount of electricity to the capacity of the storage battery) for each storage battery.
  • SOC State of Charge: the ratio of the charged amount of electricity to the capacity of the storage battery
  • the SOC value at the time of stopping the charging of the storage battery is set as the target value A
  • the SOC value that needs to be charged is set as the target value B
  • power is supplied to the power storage units provided in other projection display devices.
  • the SOC value at the time of starting is set as a target value C.
  • a value (maximum SOC) when the power storage unit 204 is fully charged is used as the target value A
  • a value (minimum SOC) when the power storage unit 204 is the discharge limit point is used as the target value B.
  • the value C a value (for example, 20%) when the amount of electricity that can be discharged remains in the power storage unit 204 may be used.
  • the storage unit 201 may be omitted as long as the adjustment unit 201 can hold the target value and various setting conditions.
  • the remaining capacity detection unit 202 detects the amount of electricity stored in a storage battery included in the power storage unit 204 (hereinafter referred to as a remaining capacity value).
  • a remaining capacity value for example, the measured value of the SOC may be used.
  • the remaining capacity time calculation unit 208 is a time during which the projection display device 2 can operate with the power supplied from the power storage unit 204 (remaining capacity Time).
  • the remaining capacity time is not only the remaining capacity value of the power storage unit 204 of the own apparatus, but also each power storage in a state in which power can be supplied among a plurality of projection display devices 2 connected to the power supply system as will be described later.
  • the remaining capacity value of the unit 204 is also calculated.
  • the switch unit 206 supplies power supplied from the power storage unit 206 or power supplied from the outside via the connection unit 211 to the light source driving units 210R, 210G, and 210B, the cooling driving units 209R, 209G, and 209B, and image signal processing driving. To the unit 215 and the spatial light modulation signal generation driver 214.
  • FIG. 2 is a block diagram showing a configuration example of the switch unit shown in FIG.
  • the switch unit 206 is supplied with power to the light source driving units 210R, 210G, and 210B, the cooling driving units 209R, 209G, and 209B, the image signal processing driving unit 215, and the spatial light modulation signal generation driving unit 214.
  • Switch elements 206-1 to 206-8 for turning on or off, a switch element 206-9 for turning on or off the power supplied from the power storage unit 204 to each drive unit, and each drive from the outside via the connection unit 211
  • a switch element 206-10 for turning on / off the power supplied to the power supply unit, a switch element 206-11 for turning on / off the power supplied from the power storage unit 204 via the connection part 211, and a connection part 211
  • a switch element 206-12 for turning on or off the power supplied to the charging unit 203 from the outside.
  • On / off of each of the switch elements 206-1 to 206-12 included in the switch unit 206 is controlled by the adjusting unit 201.
  • a semiconductor element such as a MOSFET may be used, or an element having a contact such as a relay may be used.
  • the adjustment unit 201 individually turns on or off the switch elements 206-1 to 206-12 included in the switch unit 206 in accordance with preset conditions.
  • the adjusting unit 201 supplies the light source units 401R, 401G, and 401B with the light source driving units 210R, 210G, and 210B so that the brightness and white point of the image projected on the screen have values set by the user.
  • the adjustment unit 201 supplies power supplied to the cooling units 501R, 501G, and 501B by the cooling drive units 209R, 209G, and 209B so that the junction temperatures of the light source units 401R, 401G, and 401B become preset values. Control.
  • the adjustment unit 201 receives various setting conditions and the like by the user of the projection display device 2 through an input interface (not shown).
  • the setting condition indicates, for example, the brightness, contrast, color balance of an image projected on the screen, or a command for setting an operation mode of the projection display device 2 described later.
  • the command for setting the operation mode includes a charge mode transition command for starting charging of the power storage unit 204 according to a user instruction.
  • the adjustment drive unit 205 supplies necessary power to the adjustment unit 201.
  • the adjustment drive unit 205 is directly supplied with electric power from the power storage unit 204 without passing through the switch unit 206.
  • the operation mode display unit 223 displays the operation mode of the projection display device 2 under the control of the adjustment unit 201.
  • the operation mode includes a charging mode in which the power storage unit 204 is charged, a spatial light modulation signal generation unit 212, an image signal processing unit 213, a spatial light modulation signal generation drive unit 214, an image signal processing drive unit 215,
  • the power supply to the light source units 401R, 401G and 401B and the cooling units 501R, 501G and 501B is stopped, the power saving mode in which no image is displayed, and the power of the power storage unit 204 on the screen according to the image signal
  • power can be supplied from the power storage unit 204 to the other projection display device 2 via the connection unit 211 in the power saving mode.
  • the spatial light modulators 301R, 301G, and 301B are not limited to transmissive liquid crystal display devices, but include reflective liquid crystal display devices (Liquid Crystal On Silicon; LCOS), DMD (Digital Micromirror Device), and GLV (Grating Light Valve). Etc. may be used. Further, the spatial light modulation device does not have to be configured to correspond to each color one by one, and may be configured to modulate by a color sequential method that sequentially supplies light of each color to a common spatial light modulation device.
  • LCOS Liquid Crystal On Silicon
  • DMD Digital Micromirror Device
  • GLV Grating Light Valve
  • the projection display device 2 shown in FIG. 1 shows a configuration example corresponding to RGB signals composed of R (red), G (green), and B (blue) image signals, but a Y (luminance) signal. , Cr (R ⁇ Y) color difference signal, and Cb (B ⁇ Y) color difference signal.
  • the image signal processing unit 213, the spatial light modulation signal generation unit 212, the adjustment unit 201, the remaining capacity time calculation unit 208, and the storage unit 208 use a CPU, a DSP, a memory, various logic circuits, and the like that execute processing according to a program. Can be realized.
  • the adjustment driving unit 205, the cooling driving units 209R, 209G and 209B, the light source driving units 210R, 210G and 210B, the spatial light modulation signal generation driving unit 214, and the image signal processing driving unit 215 include transistors, various logic circuits, and the like. It can be realized using.
  • FIG. 3 is a block diagram showing a configuration example of the power supply system of the present invention.
  • the power supply system of the present invention includes a plurality of connection portions 211 to which the projection display device 2 can be connected, and each connection portion 211 is connected by a DC power supply line and a signal line. .
  • the projection display device 2 shown in FIG. 1 can be connected to the connection unit 211, and each projection display device 2 is connected to the connection unit 211 via a DC power line and a signal line.
  • Each projection display device 2 connected via the connection unit 211 can exchange power (DC voltage) via a DC power supply line, and can transmit and receive information via a signal line.
  • the projection display devices 2 do not have to be connected to all the connection portions 211. If the number of connection display portions 211 is equal to or less, the number of projection display devices 2 can be connected. May be.
  • the projection display device 2 connected via the connection unit 211 illustrated in FIG. 3 performs other projections according to the remaining capacity of the power storage unit 204 included in the own device by the adjustment unit 201.
  • the power storage units 204 included in each type can be shared.
  • the adjustment unit 201 causes another projection type to be displayed.
  • a power supply start command for requesting power supply to the display device 2 is transmitted. Further, when the remaining capacity value of the power storage unit 204 included in the own apparatus is small (if the remaining capacity value is equal to or less than the target value C), the projection display device 2 in the power saving mode uses the projection unit 2 to adjust another projection type. A power supply stop command for notifying the display device 2 that power cannot be supplied is transmitted. In that case, when the remaining capacity value of the power storage unit 204 included in the own display apparatus becomes equal to or less than the target value C, the projection display apparatus 2 in the normal display mode displays the power supply start command as a transmission source apparatus of the power supply stop command. Is excluded from sending.
  • power generated by the power generation device 4 is supplied to each projection display device 2 via the power storage device 3.
  • the power generation device 4 is a device that generates power using renewable energy such as a solar power generation device, a wind power generation device, and a hydroelectric power generation device.
  • the power generation device 4 and the power storage device 3 are connected via a DC power supply line or an AC power supply line.
  • the power storage device 3 includes a storage battery that stores the power generated by the power generation device 4.
  • the capacity of the storage battery included in the power storage device 3 is desirably larger than the total capacity of the power storage unit 204 included in the plurality of projection display devices 2 connected via the DC power supply line.
  • FIG. 3 shows a configuration example in which the projection display device 2 transmits and receives information via a signal line.
  • the wireless means is used. Information may be sent and received. In that case, the signal line shown in FIG. 3 becomes unnecessary.
  • FIG. 3 shows a configuration example in which the power generated by the power generation device 4 is supplied to each projection display device 2 via the power storage device 3 and the DC power supply line.
  • an AC-DC converter that generates a DC voltage from a commercial power supply
  • an AC voltage may be supplied to the projection display device 2 from the commercial power supply.
  • each projection display device 2 needs to be connected via a DC power supply line so that power (DC voltage) can be exchanged.
  • an AC-DC converter is provided in place of the power storage device 3 shown in FIG. 3, and an AC voltage supplied from the power generation device 4 or the distribution system is converted into a DC voltage by the AC-DC converter, and the DC power line is used.
  • the configuration may be such that each projection display device 2 is supplied.
  • the power supply system shown in FIG. 3 can be applied to the case where the projection display device 2 shown in FIG. 1 is used in, for example, a plurality of conference rooms or classrooms.
  • FIG. 3 shows a configuration example in which a plurality of projection display devices 2 are connected to the power supply system.
  • the adjustment unit 201, the power storage unit 204, the remaining capacity detection unit 202, and the connection unit 211 shown in FIG. As long as the device has the same function as that of the switch unit 206, a device other than the projection display device 2 shown in FIG. 1 can be connected to the power supply system shown in FIG.
  • the operation mode of the projection display device 2 shown in FIG. 1 includes the charging mode in which the power storage unit 204 is charged, the spatial light modulation signal generation unit 212, the image signal processing unit 213, Power saving in a state where the power supply to the spatial light modulation signal generation driving unit 214, the image signal processing driving unit 215, the light source units 401R, 401G, and 401B and the cooling units 501R, 501G, and 501B is stopped and no image is displayed.
  • the operations of the projection display device 2 in these operation modes are all controlled by the adjusting unit 201.
  • FIG. 4 is a flowchart showing a processing procedure in the charging mode of the projection display device shown in FIG. 1
  • FIGS. 5A and 5B are flowcharts showing a processing procedure in the power saving mode of the projection display device shown in FIG.
  • FIGS. 6A and 6B are flowcharts showing a processing procedure in the normal display mode of the projection display apparatus shown in FIG.
  • the adjustment unit 201 first turns off the switch elements 206-1 to 206-12 of the switch unit 206 (step S101), and the target that serves as an indicator for stopping charging of the power storage unit 204 The value A is read from the storage unit 207 (step S102).
  • the adjustment unit 201 turns off the switch elements 206-1 to 206-11 of the switch unit 206 and turns on the switch element 206-12 to supply power to the charging unit 203 from the outside via the connection unit 211.
  • the charging unit 203 starts charging the power storage unit 204 (Step S104).
  • the adjustment unit 201 determines whether or not an external image signal is input to the image signal processing unit 213 (step S105).
  • the adjustment unit 201 detects the remaining capacity value of the power storage unit 204 using the remaining capacity detection unit 202, and stores the detected remaining capacity value D in the storage unit 207. (Step S106). Subsequently, it is determined whether or not the detected remaining capacity value D exceeds the target value A (step S107). If the remaining capacity value D does not exceed the target value A, the processing from step S105 is executed again. .
  • the adjustment unit 201 causes the charging unit 203 to stop charging the power storage unit 204 (step S108). Further, the switch element 206-12 of the switch unit 206 is turned off (step S109), and after the preset time has elapsed, the own apparatus is shifted to the power saving mode (step S110). Then, after a preset time has elapsed, the operation mode display unit 223 displays that it is in the power saving mode (step S111), and the process ends.
  • step S105 If it is determined in step S105 that there is an input of an image signal to the image signal processing unit 213, the adjustment unit 201 shifts its own device to the normal display mode after a preset time has elapsed (step S105). S112) Further, after a preset time has elapsed, the operation mode display unit 223 displays that the display mode is the normal display mode (step S113), and the process ends.
  • the adjustment unit 201 first turns off the switch elements 206-1 to 206-12 of the switch unit 206 (step S201), and starts charging the power storage unit 204 from the storage unit 207.
  • the target value B serving as an index and the target value C serving as an index for starting the supply of power are read from the other projection display devices 2 connected to the power supply system (step S202).
  • the adjustment unit 201 detects the remaining capacity value of the power storage unit 204 by the remaining capacity detection unit 202, and stores the detected remaining capacity value D in the storage unit 207 (step S203). Further, the detected remaining capacity value D is notified to the adjustment unit 201 of another projection display device 2 connected to the power supply system via a signal line (step S204).
  • the adjustment unit 201 determines whether or not the remaining capacity value D of the power storage unit 204 detected by the remaining capacity detection unit 202 is equal to or less than the target value C (step S205), and the remaining capacity value of the power storage unit 204 is determined.
  • D is larger than the target value C
  • the adjustment unit 201 confirms whether or not a power supply start command is input from the adjustment unit 201 of another projection display device 2 connected to the power supply system ( Step S207).
  • the adjustment unit 201 executes the processing from step S203 again.
  • the adjustment unit 201 turns on the switch element 206-11 of the switch unit 206 and transmits a power supply start command from the power storage unit 204 after a preset time has elapsed.
  • the power supply to the projected display device 2 is started, or the power supply to the projection display device that has transmitted the power supply start command from the power storage unit 204 is continued (step S208), and the processing from step S203 is executed again. To do.
  • step S206 If it is determined in step S206 that there is an image signal input to the image signal processing unit 213, the adjustment unit 201 transmits a power supply stop command to the adjustment unit of another projection display device connected to the power supply system. (Step S209). Subsequently, after a preset time has elapsed, the switch element 206-11 of the switch unit 206 is turned off, and the power supply from the power storage unit 204 to the outside is stopped (step S210). In addition, after the preset time has elapsed, the apparatus shifts to the normal display mode (step S211), and after the preset time has elapsed, the operation mode display unit 223 indicates that the normal display mode is set. It is displayed (step S212), and the process is terminated.
  • step S205 If it is determined in step S205 that the remaining capacity value D of the power storage unit 204 is equal to or less than the target value C, as illustrated in FIG. 5B, the adjustment unit 201 is connected to another projection display device connected to the power supply system. A power supply stop command is transmitted to the adjustment unit (step S213). Subsequently, after a preset time has elapsed, the switch elements 206-1 to 206-12 of the switch unit 206 are turned off (step S214), and the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B. Is determined (step S215).
  • the adjustment unit 201 shifts its own device to the charging mode after a preset time has elapsed (step S216), and is further set in advance. After the elapse of time, the operation mode display unit 223 displays that it is in the charging mode (step S217), and the process is terminated.
  • the adjustment unit 201 confirms whether or not a charge mode shift command is input (step S218). If the charge mode shift command is input, step S216 is performed. Move on to processing. If the charging mode transition command has not been input, the processing from step S203 is executed again.
  • the adjustment unit 201 first turns off the switch elements 206-1 to 206-12 of the switch unit 206 (step S301), and stores the target value B and the target value from the storage unit 207. C is read out (step S302).
  • the adjustment unit 201 detects the remaining capacity value of the power storage unit 204 by the remaining capacity detection unit 202, and stores the detected remaining capacity value D in the storage unit 207 (step S303). In addition, the adjustment unit 201 receives the remaining capacity value of each power storage unit 204 from the adjustment unit 201 of another projection display device 2 connected to the power supply system, is in the power saving mode state, and stops supplying power. The remaining capacity values E1 to En of the power storage unit 204 of the device that has not transmitted the command are stored in the storage unit 207 (step S304).
  • the adjustment unit 201 causes the remaining capacity calculation unit 208 to calculate the remaining capacity time F based on the remaining capacity value D and the remaining capacity values E1 to En, and uses the remaining capacity time F calculated by the remaining capacity calculation unit 208.
  • the data is stored in the storage unit 207 (step S305).
  • the adjustment unit 201 determines whether or not an external image signal is input to the image signal processing unit 213 (step S306). When there is an image signal input to the image signal processing unit 213, it is determined whether or not the remaining capacity time F is zero (step S307). If the remaining capacity time F is not zero, the remaining capacity detection unit 202 detects it. It is determined whether or not the remaining capacity value D of the stored power storage unit 204 is equal to or less than the target value C (step S308).
  • the adjustment unit 201 turns on the switch elements 206-1 to 206-9 of the switch unit 206 after the preset time has elapsed, Power is supplied from the unit 204 to the light source units 401R, 401G, 401B and the cooling units 501R, 501G, and 501B via the light source driving units 210R, 210G, and 210B and the cooling driving units 209R, 209G, and 209B. Power is supplied to the image signal processing unit 213 and the spatial light modulation signal generation unit 212 via the processing drive unit 215 and the spatial light modulation signal generation drive unit 214.
  • the adjustment unit 201 disconnects the DC power supply line by turning off the switch elements 206-10 to 206-12 of the switch unit 206 (step S309). Then, after the preset time has elapsed, the remaining capacity time F is displayed on the screen, for example (step S310), and after the preset time has elapsed, the operation mode display unit 223 is in the normal display mode. Is displayed (step S311), and the processing from step S303 is executed again.
  • the adjustment unit 201 When the remaining capacity value D of the power storage unit 204 is equal to or less than the target value C in the process of step S308, the adjustment unit 201 is in the power saving mode state among other projection display devices connected to the power supply system, A power supply source is selected from the devices that have not transmitted the power supply stop command (step S312), and a power supply start command is transmitted to the adjustment unit of the selected projection display device (step S313). Then, after a preset time has passed, the switch elements 206-1 to 206-8 and 206-10 of the switch unit 206 are turned on, and the switch elements 206-9, 206-11 and 206-12 are turned off.
  • the power supplied from the selected projection display device is supplied to the light source driving units 210R, 210G, and 210B, the cooling driving units 209R, 209G, and 209B, the image signal processing driving unit 215, and the spatial light modulation signal generation via the switch unit 206. It supplies to the drive part 214 (step S314). Thereafter, the process proceeds to step S310.
  • the adjustment unit 201 displays the remaining capacity time F on, for example, a screen after the preset time has elapsed (step S307).
  • step S315) Further, after a preset time has elapsed, a message indicating that the projection display apparatus 2 is to be shifted to the charging mode is displayed on, for example, a screen (step S316). Then, after the preset time has elapsed, the apparatus shifts to the charging mode (step S317), and after the preset time has elapsed, the operation mode display unit 223 displays that it is in the charging mode. (Step S318), the process is terminated.
  • Step S319) it is determined whether or not the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B (Step S320).
  • step S317 When the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B, the adjustment unit 201 proceeds to the process of step S317.
  • the adjustment unit 201 confirms whether or not a charge mode shift command is input (step S321). If the charge mode shift command is input, the control unit 201 proceeds to step S317. Transition to processing.
  • the adjustment unit 201 shifts its own device to the power saving mode after the preset time has elapsed (step S322), and the preset time has elapsed. After that, the operation mode display unit 223 displays that it is in the power saving mode (step S323), and the process ends.
  • 6A and 6B show an example in which the remaining capacity time F calculated by the remaining capacity time calculation unit 208 and a message indicating the transition to the charging mode are displayed on the screen. These are, for example, the operation mode display unit 223. The user of the projection display apparatus 2 may be notified by other methods such as displaying on the screen.
  • FIGS. 6A and 6B show a control example in which the power storage unit 204 is switched to either a charging state or a state in which power is supplied. For example, switching elements 206-9 to 206-12 are turned on / off. By switching at a speed that does not affect the image display on the screen (for example, 1 kHz or higher), the charging unit 203 may simultaneously charge the power storage unit 204 while operating the projection display device 2 in the normal display mode.
  • FIG. 7 is a timing chart showing an example of the operation of the power supply system shown in FIG.
  • three projection display devices 2 (hereinafter referred to as a first projection display device 2 1 , a second projection display device 2 2 , and a third projection display device 2 3 ) in the power line.
  • a first projection type display device 2 1 power consumption in the second projection display apparatus 2, second and third normal display mode of the projection display device 2 3 is assumed to be identical.
  • the capacitance of the first projection display device 2 1, second projection type display device 2, second and third projection type display device 2 3 is provided with the power storage unit 204 are the same, the first projection display apparatus 2 1 , the second projection display device 2 2 and the third projection display device 2 3 are capable of displaying an image for up to 6 hours in the normal display mode by the power supplied from the power storage unit 204.
  • the first projection display device 2 1 is used continuously until 9:00 am to 21 (12 hours), it is maintained normal display mode in this period Shall.
  • the second projection type display device 2 2 is used continuously until 12:00 to 15 (3 hours), it is assumed to be maintained normal display mode in this period.
  • the third projection type display device 2 3 is used continuously until 9:00 to 12 (3 hours), it is assumed to be maintained normal display mode in this period.
  • the power storage unit 204 as described above, since an image that can display capacity up to 6 hours, in the first projection display device 2 1, of the power storage unit 204 at the point of time 15 remaining The capacitance value D reaches the target value C.
  • the first projection display device 2 1 is used continuously until 12:00 to 15 (3 hours), it is assumed that a normal display mode is maintained during this period.
  • the second projection type display device 2 2 is used continuously until 9:00 am to 21 (12 hours), it is assumed to be maintained normal display mode in this period.
  • the third projection type display device 2 3 is used continuously until 12:00 to 15 (3 hours), it is assumed that a normal display mode is maintained during this period.
  • the remaining capacity value D of the power storage unit 204 of the second projection display device 22 reaches the target value C at 15:00 on the second day.
  • the second projection display apparatus 2 2 connected to a power supply system of this embodiment, in accordance with the processing procedure shown in FIG. 6, in a period of 15:00 to 18 of the third projection type display device 2 3 It operates with electric power supplied from the power storage unit 204. In this case, the remaining capacity value D of the power storage unit 204 of the third projection display device 23 reaches the target value C at 18:00. Therefore, the second projection display apparatus 2 2, in the period of 18:00 to 21, operates by the power supplied from the first projection display apparatus 2 1 of power storage unit 204.
  • the adjustment unit 201 in the normal display mode, when the remaining capacity value D of the power storage unit 204 is equal to or less than the target value C, the adjustment unit 201 connects to the other projection display device 2 connected via the connection unit 211.
  • a power supply start command for requesting power supply from the power storage unit 204 included in the projection display device 2 is transmitted, and the switch unit 206 is controlled to be supplied from the projection display device via the connection unit 211.
  • the power storage unit 204 provided in the plurality of projection display devices 2 can be shared by the projection display devices 2. Therefore, the projection display device 2 can be operated continuously in the normal display mode beyond the capacity of the power storage unit 204.
  • the capacity of the power storage unit 204 included in one projection display device 2 can be reduced.
  • the cost, volume, and weight of the projection display device 2 including the power storage unit 204 can be suppressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Disclosed is a projection display device which has: an electrical storage unit (204), including a storage battery; drive units (209, 210, 214, 215) that supply necessary power to parts to be used to perform projection display of an image; a residual capacity detecting unit (202) that detects the residual capacity value of the electrical storage unit (204); a connecting unit (211), which is an interface for connection with the outside such that power can be exchanged; a switch unit (206) that performs switching between the on-state and the off-state between the electrical storage unit and the drive units, between the electrical storage unit and the connecting unit, and between the connecting unit and the drive units; and an adjusting unit (201) that controls the switch unit (206) corresponding to operation mode. In the case where the residual capacity value of the electrical storage unit (204) is a previously set target value or less in normal display mode, the adjusting unit (201) requests power supply to other devices, which are connected via the connecting unit (211), from the electrical storage units provided in the devices, and at the same time, the adjusting unit controls the switch unit (206) and supplies power supplied from the devices via the connecting unit (211) to the drive units (209, 210, 214, 215).

Description

投写型表示装置及びその電力供給システムProjection display device and power supply system thereof
　本発明は蓄電池を備えた投写型表示装置及びその電力供給システムに関する。 The present invention relates to a projection display device provided with a storage battery and a power supply system thereof.
　画像をスクリーン等に投写して表示する投写型表示装置（プロジェクタ等）は、企画提案、商品説明、業務報告等、様々な用途で利用されている。投写型表示装置は、比較的小型であっても大きな画面を表示することが可能であり、近年では携帯可能な投写型表示装置も開発されている。 Projection display devices (projectors, etc.) that project and display images on a screen or the like are used for various purposes such as planning proposals, product descriptions, and business reports. Even if the projection display device is relatively small, it can display a large screen. In recent years, a portable projection display device has been developed.
　そのような携帯可能な投写型表示装置は、商用電源から電力が得られる状況で使用するとは限らないため、蓄電池を備え、該蓄電池から必要な電力を得て動作する構成が一般的である。また、携帯可能な投写型表示装置でなくても、例えば電源オフ後に内部温度が十分に低下するまで冷却ファンの動作を維持するために蓄電池を備えた構成もある（特許文献１参照）。 Since such a portable projection display device is not always used in a situation where electric power can be obtained from a commercial power source, a configuration including a storage battery and operating by obtaining necessary power from the storage battery is generally used. Moreover, even if it is not a portable projection display apparatus, there is also a configuration provided with a storage battery in order to maintain the operation of the cooling fan until the internal temperature sufficiently decreases after the power is turned off (see Patent Document 1).
　しかしながら、未だ小型で大容量かつ安価な蓄電池は存在しておらず、蓄電池を備えた投写型表示装置では、該蓄電池が投写型表示装置のコスト、容積、重量等を増大させる要因となる。 However, there is still no small, large-capacity, and inexpensive storage battery. In a projection display device equipped with a storage battery, the storage battery increases the cost, volume, weight, etc. of the projection display device.
　蓄電池は、その容量を小さくすれば容積や重量を低減できるが、それでは投写型表示装置が連続して動作できる時間が短くなってしまう。一方、蓄電池の容量を大きくすれば、その容積や重量が増大するため、投写型表示装置のコスト、容積、重量等も増大する。 The storage battery can be reduced in volume and weight if its capacity is reduced, but this shortens the time during which the projection display device can operate continuously. On the other hand, if the capacity of the storage battery is increased, its volume and weight increase, so that the cost, volume and weight of the projection display device also increase.
特開平１１－１３３５０５号公報Japanese Patent Laid-Open No. 11-133505
　そこで本発明は、蓄電池のコスト、容積、重量を抑制できる投写型表示装置及びその電力供給システムを提供することを目的とする。 Therefore, an object of the present invention is to provide a projection display device and its power supply system that can suppress the cost, volume, and weight of the storage battery.
　上記目的を達成するため本発明の投写型表示装置は、画像を投写表示する投写型表示装置であって、
　蓄電池を含む蓄電部と、
　前記画像の投写表示で用いる部位へ所要の電力を供給する駆動部と、
　前記蓄電部に蓄積された電気量である残容量値を検出する残容量検出部と、
　前記蓄電部の電力を外部へ供給すると共に、外部から供給される電力を前記駆動部へ供給するためのインタフェースである接続部と、
　前記蓄電部から前記駆動部へ供給する電力をオンまたはオフし、前記蓄電部から前記接続部を介して外部へ供給する電力をオンまたはオフし、前記接続部を介して外部から前記駆動部へ供給される電力をオンまたはオフするスイッチ部と、
　前記画像を投写表示する通常表示モード時、前記残容量検出部で検出された前記蓄電部の残容量値が予め設定された目標値よりも大きい場合、前記スイッチ部を制御することで前記蓄電部から前記駆動部へ電力を供給させ、該残容量値が前記目標値以下である場合、前記接続部を介して接続された他の装置へ該装置が備える蓄電部からの電力の供給を要求する電力供給開始コマンドを送信すると共に、前記スイッチ部を制御することで前記接続部を介して該装置から供給される電力を前記駆動部へ供給させる調節部と、
を有する。 To achieve the above object, a projection display device of the present invention is a projection display device that projects and displays an image,
A power storage unit including a storage battery;
A drive unit for supplying required power to a part used in the projection display of the image;
A remaining capacity detection unit that detects a remaining capacity value that is the amount of electricity stored in the power storage unit;
While supplying the power of the power storage unit to the outside, a connection unit that is an interface for supplying power supplied from the outside to the drive unit,
The power supplied from the power storage unit to the drive unit is turned on or off, the power supplied from the power storage unit to the outside through the connection unit is turned on or off, and the power is supplied from the outside to the drive unit through the connection unit. A switch unit for turning on or off the supplied power; and
In the normal display mode for projecting and displaying the image, when the remaining capacity value of the power storage unit detected by the remaining capacity detection unit is larger than a preset target value, the power storage unit is controlled by controlling the switch unit. When the remaining capacity value is less than or equal to the target value, the power is supplied from the power storage unit included in the device to another device connected via the connection unit. An adjustment unit that transmits a power supply start command and controls the switch unit to supply power supplied from the device to the drive unit via the connection unit;
Have
　一方、本発明の投写型表示装置の電力供給システムは、
　上記投写型表示装置を複数備え、
　前記複数の投写型表示装置が、前記接続部を介して電力の交換が可能に接続された構成である。 On the other hand, the power supply system of the projection display device of the present invention is
A plurality of the projection display devices are provided.
The plurality of projection display devices are connected to each other through the connection unit so that power can be exchanged.
図１は、本発明の投写型表示装置の一構成例を示すブロック図である。FIG. 1 is a block diagram showing a configuration example of a projection display apparatus according to the present invention. 図２は、図１に示したスイッチ部の一構成例を示すブロック図である。FIG. 2 is a block diagram illustrating a configuration example of the switch unit illustrated in FIG. 図３は、本発明の電力供給システムの一構成例を示すブロック図である。FIG. 3 is a block diagram showing a configuration example of the power supply system of the present invention. 図４は、図１に示した投写型表示装置の充電モードにおける処理手順を示すフローチャートである。FIG. 4 is a flowchart showing a processing procedure in the charging mode of the projection display apparatus shown in FIG. 図５Ａは、図１に示した投写型表示装置の省電力モードにおける処理手順を示すフローチャートである。FIG. 5A is a flowchart showing a processing procedure in the power saving mode of the projection display apparatus shown in FIG. 図５Ｂは、図１に示した投写型表示装置の省電力モードにおける処理手順を示すフローチャートである。FIG. 5B is a flowchart showing a processing procedure in the power saving mode of the projection display apparatus shown in FIG. 図６Ａは、図１に示した投写型表示装置の通常表示モードにおける処理手順を示すフローチャートである。FIG. 6A is a flowchart showing a processing procedure in the normal display mode of the projection display apparatus shown in FIG. 図６Ｂは、図１に示した投写型表示装置の通常表示モードにおける処理手順を示すフローチャートである。FIG. 6B is a flowchart showing a processing procedure in the normal display mode of the projection display apparatus shown in FIG. 図７は、図３に示した電力供給システムの動作の一例を示すタイミングチャートである。FIG. 7 is a timing chart showing an example of the operation of the power supply system shown in FIG.
　次に本発明について図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
　本発明では、蓄電池を備えた複数の投写型表示装置を電力の交換が可能に接続し、各投写型表示装置が備える蓄電池を共用できるようにする。 In the present invention, a plurality of projection display devices each provided with a storage battery are connected so that power can be exchanged, and the storage batteries provided in each projection display device can be shared.
　図１は、本発明の投写型表示装置の一構成例を示すブロック図である。 FIG. 1 is a block diagram showing an example of the configuration of the projection display device of the present invention.
　図１に示すように、本発明の投写型表示装置２は、調節部２０１、残容量検出部２０２、充電部２０３、蓄電部２０４、調節駆動部２０５、スイッチ部２０６、記憶部２０７、残容量時間算出部２０８、冷却駆動部２０９Ｒ、２０９Ｇ及び２０９Ｂ、光源駆動部２１０Ｒ、２１０Ｇ及び２１０Ｂ、接続部２１１、空間光変調信号生成部２１２、画像信号処理部２１３、空間光変調信号生成駆動部２１４、画像信号処理駆動部２１５、動作モード表示部２２３、空間光変調装置３０１Ｒ、３０１Ｇ及び３０１Ｂ、光源部４０１Ｒ、４０１Ｇ及び４０１Ｂ、冷却部５０１Ｒ、５０１Ｇ及び５０１Ｂ、クロスダイクロイックプリズム６０１、並びに投写レンズ６０２を備えている。 As shown in FIG. 1, the projection display device 2 of the present invention includes an adjustment unit 201, a remaining capacity detection unit 202, a charging unit 203, a power storage unit 204, an adjustment drive unit 205, a switch unit 206, a storage unit 207, a remaining capacity. Time calculation unit 208, cooling drive units 209R, 209G and 209B, light source drive units 210R, 210G and 210B, connection unit 211, spatial light modulation signal generation unit 212, image signal processing unit 213, spatial light modulation signal generation drive unit 214, An image signal processing drive unit 215, an operation mode display unit 223, spatial light modulators 301R, 301G and 301B, light source units 401R, 401G and 401B, cooling units 501R, 501G and 501B, a cross dichroic prism 601 and a projection lens 602 are provided. ing.
　光源部４０１Ｒ、４０１Ｇ、４０１Ｂは、赤（Ｒ）、緑（Ｇ）、青（Ｂ）の三原色を発光する。光源部４０１Ｒ、４０１Ｇ、４０１Ｂには、例えばＬＥＤ（Light　Emitting　Diode）が用いられる。 The light source units 401R, 401G, and 401B emit three primary colors of red (R), green (G), and blue (B). For example, an LED (Light Emitting Diode) is used for the light source units 401R, 401G, and 401B.
　光源駆動部２１０Ｒ、２１０Ｇ、２１０Ｂは、光源部４０１Ｒ、４０１Ｇ、４０１Ｂに所要の電力を供給する。光源駆動部２１０Ｒ、２１０Ｇ、２１０Ｂには、スイッチ部２０６を介して蓄電部２０４または外部から電力（直流電圧）が供給される。 The light source driving units 210R, 210G, and 210B supply necessary power to the light source units 401R, 401G, and 401B. Electric power (DC voltage) is supplied to the light source driving units 210R, 210G, and 210B from the power storage unit 204 or the outside via the switch unit 206.
　画像信号処理部２１３は、外部から入力される画像信号をＡ／Ｄ変換すると共に、該画像信号の規格に応じた所定の画像信号処理を実施する。 The image signal processing unit 213 performs A / D conversion on an image signal input from the outside, and performs predetermined image signal processing according to the standard of the image signal.
　画像信号処理駆動部２１５は、画像信号処理部２１３に所要の電力を供給する。画像信号処理駆動部２１５には、スイッチ部２０６を介して蓄電部２０４または外部から電力（直流電圧）が供給される。 The image signal processing driving unit 215 supplies necessary power to the image signal processing unit 213. The image signal processing drive unit 215 is supplied with electric power (DC voltage) from the power storage unit 204 or the outside via the switch unit 206.
　空間光変調信号生成部２１２は、空間光変調装置３０１Ｒ、３０１Ｇ、３０１Ｂによる赤（Ｒ）、緑（Ｇ）、青（Ｂ）の光の変調に用いる色毎の画像信号を生成する。 The spatial light modulation signal generation unit 212 generates an image signal for each color used for modulation of red (R), green (G), and blue (B) light by the spatial light modulation devices 301R, 301G, and 301B.
　空間光変調信号生成駆動部２１４は、空間光変調信号生成部２１２に所要の電力を供給する。空間光変調信号生成駆動部２１４には、スイッチ部２０６を介して蓄電部２０４または外部から電力（直流電圧）が供給される。 The spatial light modulation signal generation drive unit 214 supplies required power to the spatial light modulation signal generation unit 212. The spatial light modulation signal generation drive unit 214 is supplied with electric power (DC voltage) from the power storage unit 204 or the outside via the switch unit 206.
　空間光変調装置３０１Ｒ、３０１Ｇ、３０１Ｂは、光源部４０１Ｒ、４０１Ｇ、４０１Ｂから出力された赤（Ｒ）、緑（Ｇ）、青（Ｂ）の三原色の光を、空間光変調信号生成部２１２で生成された色毎の画像信号にしたがって変調し、各色の画像光を出力する。空間光変調装置３０１Ｒ、３０１Ｇ、３０１Ｂには、例えば透過型液晶表示装置が用いられる。 The spatial light modulation devices 301R, 301G, and 301B use the spatial light modulation signal generation unit 212 to output light of the three primary colors red (R), green (G), and blue (B) output from the light source units 401R, 401G, and 401B. Modulation is performed according to the generated image signal for each color, and image light of each color is output. For the spatial light modulators 301R, 301G, 301B, for example, a transmissive liquid crystal display device is used.
　クロスダイクロイックプリズム６０１は、空間光変調装置３０１Ｒ、３０１Ｇ、３０１Ｂから出力された三原色の各画像光を合成してカラー画像を形成する。 The cross dichroic prism 601 combines the three primary color image lights output from the spatial light modulators 301R, 301G, and 301B to form a color image.
　投写レンズ６０２は、クロスダイクロイックプリズム６０１で合成されたカラー画像をスクリーンへ投写する。 The projection lens 602 projects the color image synthesized by the cross dichroic prism 601 onto the screen.
　冷却部５０１Ｒ、５０１Ｇ、５０１Ｂは、光源部４０１Ｒ、４０１Ｇ、４０１Ｂの冷却に用い、例えばＬＥＤの接合部の温度上昇に伴う光量低下を抑制する。冷却部５０１Ｒ、５０１Ｇ、５０１Ｂには、例えば周知のペルチェ素子を用いることができる。 The cooling units 501R, 501G, and 501B are used for cooling the light source units 401R, 401G, and 401B, and suppress, for example, a decrease in light amount due to a temperature increase in the LED junction. For the cooling units 501R, 501G, and 501B, for example, a well-known Peltier element can be used.
　冷却駆動部２０９Ｒ、２０９Ｇ、２０９Ｂは、冷却部５０１Ｒ、５０１Ｇ、５０１Ｂに所要の電力を供給する。冷却駆動部２０９Ｒ、２０９Ｇ、２０９Ｂには、スイッチ部２０６を介して蓄電部２０４または外部から電力（直流電圧）が供給される。 The cooling drive units 209R, 209G, and 209B supply necessary power to the cooling units 501R, 501G, and 501B. The cooling drive units 209R, 209G, and 209B are supplied with electric power (DC voltage) from the power storage unit 204 or the outside via the switch unit 206.
　蓄電部２０４は、少なくとも１つの蓄電池を備えている。蓄電池には、エネルギー密度が高く、自己放電による容量低下が少なく、比較的小型で軽量な、例えばリチウムイオン（Ｌｉ－ｉｏｎ）充電池が用いられる。 The power storage unit 204 includes at least one storage battery. As the storage battery, for example, a lithium ion (Li-ion) rechargeable battery is used which has a high energy density, a small capacity drop due to self-discharge, and is relatively small and light.
　充電部２０３は、蓄電部２０４が備える蓄電池を充電する。充電部２０３には、スイッチ部２０６を介して外部から電力（直流電圧）が供給される。 The charging unit 203 charges a storage battery included in the power storage unit 204. The charging unit 203 is supplied with electric power (DC voltage) from the outside via the switch unit 206.
　接続部２１１は、蓄電部２０４の電力（直流電圧）を他の投写型表示装置２と共用するためのＤＣ電源ライン及び他の投写型表示装置２と情報や制御信号を送受信するための信号ラインと投写型表示装置２を接続するためのインタフェース部である。接続部２１１は、投写型表示装置２の運搬性を向上させるために、着脱可能なコネクタあるいはケーブルで構成されているものがよい。 The connection unit 211 is a DC power line for sharing the power (DC voltage) of the power storage unit 204 with other projection display devices 2 and a signal line for transmitting and receiving information and control signals to and from other projection display devices 2. And an interface unit for connecting the projection display device 2 to each other. In order to improve the transportability of the projection display device 2, the connection unit 211 is preferably configured with a detachable connector or cable.
　記憶部２０７は、調節部２０１により蓄電部２０４が備える蓄電池の充放電を制御するために用いる指標である目標値及び各種の設定条件等が予め格納されるメモリである。目標値は、例えば蓄電池毎のＳＯＣ（State　of　Charge：蓄電池の容量に対する充電された電気量の比率）の値を用いて設定される。以下では、蓄電池に対する充電を停止するときのＳＯＣの値を目標値Ａとし、充電の開始が必要なＳＯＣの値を目標値Ｂとし、他の投写型表示装置が備える蓄電部に電力の供給を開始させるときのＳＯＣの値を目標値Ｃとする。例えば、目標値Ａには蓄電部２０４が満充電のときの値（最大ＳＯＣ）を用い、目標値Ｂには蓄電部２０４が放電の限界点であるときの値（最小ＳＯＣ）を用い、目標値Ｃには蓄電部２０４に放電可能な電気量が残っているときの値（例えば、２０％）を用いればよい。なお、調節部２０１で、上記目標値や各種の設定条件等を保持できれば、記憶部２０１は無くてもよい。 The storage unit 207 is a memory in which a target value that is an index used to control charging / discharging of the storage battery included in the power storage unit 204 by the adjustment unit 201, various setting conditions, and the like are stored in advance. The target value is set using, for example, the value of SOC (State of Charge: the ratio of the charged amount of electricity to the capacity of the storage battery) for each storage battery. In the following, the SOC value at the time of stopping the charging of the storage battery is set as the target value A, the SOC value that needs to be charged is set as the target value B, and power is supplied to the power storage units provided in other projection display devices. The SOC value at the time of starting is set as a target value C. For example, a value (maximum SOC) when the power storage unit 204 is fully charged is used as the target value A, and a value (minimum SOC) when the power storage unit 204 is the discharge limit point is used as the target value B. As the value C, a value (for example, 20%) when the amount of electricity that can be discharged remains in the power storage unit 204 may be used. Note that the storage unit 201 may be omitted as long as the adjustment unit 201 can hold the target value and various setting conditions.
　残容量検出部２０２は、蓄電部２０４が備える蓄電池に蓄積されている電気量（以下、残容量値と称す）を検出する。残容量値は、例えば上記ＳＯＣの測定値を用いればよい。 The remaining capacity detection unit 202 detects the amount of electricity stored in a storage battery included in the power storage unit 204 (hereinafter referred to as a remaining capacity value). As the remaining capacity value, for example, the measured value of the SOC may be used.
　残容量時間算出部２０８は、残容量検出部２０２で検出された蓄電部２０４の残容量値に基づいて、投写型表示装置２が蓄電部２０４から供給される電力で動作可能な時間（残容量時間）を算出する。残容量時間は、自装置の蓄電部２０４の残容量値だけでなく、後述するように電力供給システムに接続された複数の投写型表示装置２のうち、電力供給が可能な状態にある各蓄電部２０４の残容量値も含めて算出する。 Based on the remaining capacity value of the power storage unit 204 detected by the remaining capacity detection unit 202, the remaining capacity time calculation unit 208 is a time during which the projection display device 2 can operate with the power supplied from the power storage unit 204 (remaining capacity Time). The remaining capacity time is not only the remaining capacity value of the power storage unit 204 of the own apparatus, but also each power storage in a state in which power can be supplied among a plurality of projection display devices 2 connected to the power supply system as will be described later. The remaining capacity value of the unit 204 is also calculated.
　スイッチ部２０６は、蓄電部２０６から供給される電力または接続部２１１を介して外部から供給される電力を、光源駆動部２１０Ｒ、２１０Ｇ、２１０Ｂ、冷却駆動部２０９Ｒ、２０９Ｇ、２０９Ｂ、画像信号処理駆動部２１５、並びに空間光変調信号生成駆動部２１４に供給する。 The switch unit 206 supplies power supplied from the power storage unit 206 or power supplied from the outside via the connection unit 211 to the light source driving units 210R, 210G, and 210B, the cooling driving units 209R, 209G, and 209B, and image signal processing driving. To the unit 215 and the spatial light modulation signal generation driver 214.
　図２は、図１に示したスイッチ部の一構成例を示すブロック図である。 FIG. 2 is a block diagram showing a configuration example of the switch unit shown in FIG.
　図２に示すように、スイッチ部２０６は、光源駆動部２１０Ｒ、２１０Ｇ、２１０Ｂ、冷却駆動部２０９Ｒ、２０９Ｇ、２０９Ｂ、画像信号処理駆動部２１５及び空間光変調信号生成駆動部２１４に供給される電力をオンまたはオフするスイッチ素子２０６－１～２０６－８と、蓄電部２０４から各駆動部へ供給される電力をオンまたはオフするスイッチ素子２０６－９と、接続部２１１を介して外部から各駆動部へ供給される電力をオンまたはオフするスイッチ素子２０６－１０と、蓄電部２０４から接続部２１１を介して外部へ供給される電力をオンまたはオフするスイッチ素子２０６－１１と、接続部２１１を介して外部から充電部２０３に供給される電力をオンまたはオフするスイッチ素子２０６－１２とを備えている。スイッチ部２０６が備える各スイッチ素子２０６－１～２０６－１２のオン／オフは、調節部２０１により制御される。スイッチ素子２０６－１～２０６－１２には、ＭＯＳＦＥＴ等の半導体素子を用いてもよく、リレー等の接点を備えた素子を用いてもよい。 As shown in FIG. 2, the switch unit 206 is supplied with power to the light source driving units 210R, 210G, and 210B, the cooling driving units 209R, 209G, and 209B, the image signal processing driving unit 215, and the spatial light modulation signal generation driving unit 214. Switch elements 206-1 to 206-8 for turning on or off, a switch element 206-9 for turning on or off the power supplied from the power storage unit 204 to each drive unit, and each drive from the outside via the connection unit 211 A switch element 206-10 for turning on / off the power supplied to the power supply unit, a switch element 206-11 for turning on / off the power supplied from the power storage unit 204 via the connection part 211, and a connection part 211 And a switch element 206-12 for turning on or off the power supplied to the charging unit 203 from the outside. On / off of each of the switch elements 206-1 to 206-12 included in the switch unit 206 is controlled by the adjusting unit 201. As the switch elements 206-1 to 206-12, a semiconductor element such as a MOSFET may be used, or an element having a contact such as a relay may be used.
　調節部２０１は、スイッチ部２０６が備えるスイッチ素子２０６－１～２０６－１２を、予め設定された条件にしたがって個別にオンまたはオフする。また、調節部２０１は、スクリーンに投写される画像の明るさや白色点等が利用者によって設定された値となるように、光源駆動部２１０Ｒ、２１０Ｇ、２１０Ｂにより光源部４０１Ｒ、４０１Ｇ、４０１Ｂへ供給する電力を制御する。さらに、調節部２０１は、光源部４０１Ｒ、４０１Ｇ、４０１Ｂの接合部温度が予め設定された値となるように、冷却駆動部２０９Ｒ、２０９Ｇ、２０９Ｂにより冷却部５０１Ｒ、５０１Ｇ、５０１Ｂへ供給する電力を制御する。 The adjustment unit 201 individually turns on or off the switch elements 206-1 to 206-12 included in the switch unit 206 in accordance with preset conditions. The adjusting unit 201 supplies the light source units 401R, 401G, and 401B with the light source driving units 210R, 210G, and 210B so that the brightness and white point of the image projected on the screen have values set by the user. To control the power. Further, the adjustment unit 201 supplies power supplied to the cooling units 501R, 501G, and 501B by the cooling drive units 209R, 209G, and 209B so that the junction temperatures of the light source units 401R, 401G, and 401B become preset values. Control.
　調節部２０１には、投写型表示装置２の利用者により不図示の入力インタフェースを介して各種の設定条件等が入力される。設定条件は、例えばスクリーンに投写する画像の輝度、コントラスト、色バランス、あるいは後述する投写型表示装置２の動作モードを設定するためのコマンド等を指す。動作モードを設定するためのコマンドには、利用者の指示により蓄電部２０４の充電を開始させるための充電モード移行コマンドがある。 The adjustment unit 201 receives various setting conditions and the like by the user of the projection display device 2 through an input interface (not shown). The setting condition indicates, for example, the brightness, contrast, color balance of an image projected on the screen, or a command for setting an operation mode of the projection display device 2 described later. The command for setting the operation mode includes a charge mode transition command for starting charging of the power storage unit 204 according to a user instruction.
　調節駆動部２０５は、調節部２０１に所要の電力を供給する。調節駆動部２０５には、スイッチ部２０６を介することなく、蓄電部２０４から直接電力が供給される。 The adjustment drive unit 205 supplies necessary power to the adjustment unit 201. The adjustment drive unit 205 is directly supplied with electric power from the power storage unit 204 without passing through the switch unit 206.
　動作モード表示部２２３は、調節部２０１の制御により投写型表示装置２の動作モードを表示する。動作モードには、蓄電部２０４を充電している状態である充電モードと、空間光変調信号生成部２１２、画像信号処理部２１３、空間光変調信号生成駆動部２１４、画像信号処理駆動部２１５、光源部４０１Ｒ、４０１Ｇ及び４０１Ｂ並びに冷却部５０１Ｒ、５０１Ｇ及び５０１Ｂに対する電力供給を停止して、画像を表示していない状態である省電力モードと、蓄電部２０４の電力により画像信号にしたがってスクリーン等に画像を投写表示している状態である通常表示モードとがある。本実施形態では、省電力モード時、蓄電部２０４から接続部２１１を介して他の投写型表示装置２へ電力の供給を可能にする。 The operation mode display unit 223 displays the operation mode of the projection display device 2 under the control of the adjustment unit 201. The operation mode includes a charging mode in which the power storage unit 204 is charged, a spatial light modulation signal generation unit 212, an image signal processing unit 213, a spatial light modulation signal generation drive unit 214, an image signal processing drive unit 215, The power supply to the light source units 401R, 401G and 401B and the cooling units 501R, 501G and 501B is stopped, the power saving mode in which no image is displayed, and the power of the power storage unit 204 on the screen according to the image signal There is a normal display mode in which an image is projected and displayed. In the present embodiment, power can be supplied from the power storage unit 204 to the other projection display device 2 via the connection unit 211 in the power saving mode.
　なお、空間光変調装置３０１Ｒ、３０１Ｇ、３０１Ｂには、透過型液晶表示装置に限らず、反射型液晶表示装置（Liquid　Crystal　On　Silicon；ＬＣＯＳ）、ＤＭＤ（Digital　Micromirror　Device）、ＧＬＶ（Grating　Light　Valve）等を用いてもよい。また、空間光変調装置は、各色に対応して１台ずつ備える構成である必要はなく、共通の空間光変調装置へ各色の光を順次供給する色順次方式で変調する構成でもよい。 The spatial light modulators 301R, 301G, and 301B are not limited to transmissive liquid crystal display devices, but include reflective liquid crystal display devices (Liquid Crystal On Silicon; LCOS), DMD (Digital Micromirror Device), and GLV (Grating Light Valve). Etc. may be used. Further, the spatial light modulation device does not have to be configured to correspond to each color one by one, and may be configured to modulate by a color sequential method that sequentially supplies light of each color to a common spatial light modulation device.
　また、図１に示す投写型表示装置２は、Ｒ（赤）、Ｇ（緑）、Ｂ（青）の画像信号から成るＲＧＢ信号に対応する構成例を示しているが、Ｙ（輝度）信号、Ｃｒ（Ｒ－Ｙ）の色差信号、Ｃｂ（Ｂ－Ｙ）の色差信号から成るＹＣｂＣｒ信号に対応する構成でもよい。 Further, the projection display device 2 shown in FIG. 1 shows a configuration example corresponding to RGB signals composed of R (red), G (green), and B (blue) image signals, but a Y (luminance) signal. , Cr (R−Y) color difference signal, and Cb (B−Y) color difference signal.
　画像信号処理部２１３、空間光変調信号生成部２１２、調節部２０１、残容量時間算出部２０８及び記憶部２０８は、プログラムにしたがって処理を実行するＣＰＵ、ＤＳＰ、メモリ、各種の論理回路等を用いて実現できる。また、調節駆動部２０５、冷却駆動部２０９Ｒ、２０９Ｇ及び２０９Ｂ、光源駆動部２１０Ｒ、２１０Ｇ及び２１０Ｂ、空間光変調信号生成駆動部２１４、並びに画像信号処理駆動部２１５は、トランジスタや各種の論理回路等を用いて実現できる。 The image signal processing unit 213, the spatial light modulation signal generation unit 212, the adjustment unit 201, the remaining capacity time calculation unit 208, and the storage unit 208 use a CPU, a DSP, a memory, various logic circuits, and the like that execute processing according to a program. Can be realized. The adjustment driving unit 205, the cooling driving units 209R, 209G and 209B, the light source driving units 210R, 210G and 210B, the spatial light modulation signal generation driving unit 214, and the image signal processing driving unit 215 include transistors, various logic circuits, and the like. It can be realized using.
　図３は、本発明の電力供給システムの一構成例を示すブロック図である。 FIG. 3 is a block diagram showing a configuration example of the power supply system of the present invention.
　図３に示すように、本発明の電力供給システムは、投写型表示装置２が接続可能な複数の接続部２１１を備え、各接続部２１１がＤＣ電源ライン及び信号ラインで接続された構成である。 As shown in FIG. 3, the power supply system of the present invention includes a plurality of connection portions 211 to which the projection display device 2 can be connected, and each connection portion 211 is connected by a DC power supply line and a signal line. .
　接続部２１１には、例えば図１に示した投写型表示装置２が接続可能であり、各投写型表示装置２は接続部２１１を介してＤＣ電源ライン及び信号ラインで接続される。接続部２１１を介して接続された各投写型表示装置２は、ＤＣ電源ラインを介して電力（直流電圧）の交換が可能であり、信号ラインを介して情報の送受信が可能である。なお、本発明の電力供給システムは、全ての接続部２１１に投写型表示装置２が接続されている必要はなく、接続部２１１の数以下であれば、何台の投写型表示装置２が接続されていてもよい。 For example, the projection display device 2 shown in FIG. 1 can be connected to the connection unit 211, and each projection display device 2 is connected to the connection unit 211 via a DC power line and a signal line. Each projection display device 2 connected via the connection unit 211 can exchange power (DC voltage) via a DC power supply line, and can transmit and receive information via a signal line. In the power supply system of the present invention, the projection display devices 2 do not have to be connected to all the connection portions 211. If the number of connection display portions 211 is equal to or less, the number of projection display devices 2 can be connected. May be.
　本実施形態の電力供給システムでは、図３に示す接続部２１１を介して接続された投写型表示装置２が、調節部２０１により自装置が備える蓄電部２０４の残容量に応じて、他の投写型表示装置２に対して電力の供給を要求するコマンドまたは他の投写型表示装置２に対して電力の供給不可を通知するコマンドを送受信することで、それぞれが備える蓄電部２０４を共用可能にする。例えば、通常表示モードの投写型表示装置２では、自装置が備える蓄電部２０４の残容量値が少なくなると（残容量値が上記目標値Ｃ以下であれば）、調節部２０１により他の投写型表示装置２へ電力の供給を要求する電力供給開始コマンドを送信する。また、省電力モードの投写型表示装置２は、自装置が備える蓄電部２０４の残容量値が少ないとき（残容量値が上記目標値Ｃ以下であれば）、調節部２０１により他の投写型表示装置２へ電力の供給不可を通知するための電力供給停止コマンドを送信する。その場合、通常表示モードの投写型表示装置２は、自装置が備える蓄電部２０４の残容量値が上記目標値Ｃ以下になると、電力供給停止コマンドの送信元の装置を、上記電力供給開始コマンドを送信する対象から除外する。 In the power supply system of the present embodiment, the projection display device 2 connected via the connection unit 211 illustrated in FIG. 3 performs other projections according to the remaining capacity of the power storage unit 204 included in the own device by the adjustment unit 201. By transmitting / receiving a command for requesting power supply to the type display device 2 or a command for notifying the other projection display device 2 that power cannot be supplied, the power storage units 204 included in each type can be shared. . For example, in the projection display device 2 in the normal display mode, when the remaining capacity value of the power storage unit 204 included in the own apparatus decreases (if the remaining capacity value is equal to or less than the target value C), the adjustment unit 201 causes another projection type to be displayed. A power supply start command for requesting power supply to the display device 2 is transmitted. Further, when the remaining capacity value of the power storage unit 204 included in the own apparatus is small (if the remaining capacity value is equal to or less than the target value C), the projection display device 2 in the power saving mode uses the projection unit 2 to adjust another projection type. A power supply stop command for notifying the display device 2 that power cannot be supplied is transmitted. In that case, when the remaining capacity value of the power storage unit 204 included in the own display apparatus becomes equal to or less than the target value C, the projection display apparatus 2 in the normal display mode displays the power supply start command as a transmission source apparatus of the power supply stop command. Is excluded from sending.
　各投写型表示装置２には、例えば発電装置４によって発電された電力が蓄電装置３を介して供給される。 For example, power generated by the power generation device 4 is supplied to each projection display device 2 via the power storage device 3.
　発電装置４は、太陽光発電装置、風力発電装置、水力発電装置等の再生可能エネルギーを用いて発電する装置である。発電装置４と蓄電装置３とはＤＣ電源ラインまたはＡＣ電源ラインを介して接続される。 The power generation device 4 is a device that generates power using renewable energy such as a solar power generation device, a wind power generation device, and a hydroelectric power generation device. The power generation device 4 and the power storage device 3 are connected via a DC power supply line or an AC power supply line.
　蓄電装置３は、発電装置４で発電された電力を蓄積する蓄電池を備えている。蓄電装置３が備える蓄電池の容量は、ＤＣ電源ラインを介して接続される複数の投写型表示装置２が備える蓄電部２０４の総容量よりも大きいことが望ましい。 The power storage device 3 includes a storage battery that stores the power generated by the power generation device 4. The capacity of the storage battery included in the power storage device 3 is desirably larger than the total capacity of the power storage unit 204 included in the plurality of projection display devices 2 connected via the DC power supply line.
　なお、図３では、投写型表示装置２が信号ラインを介して情報を送受信する構成例を示しているが、各投写型表示装置２が無線手段を備えている場合は、該無線手段を用いて情報を送受信してもよい。その場合、図３に示す信号ラインは不要になる。 FIG. 3 shows a configuration example in which the projection display device 2 transmits and receives information via a signal line. However, when each projection display device 2 includes wireless means, the wireless means is used. Information may be sent and received. In that case, the signal line shown in FIG. 3 becomes unnecessary.
　また、図３では、発電装置４によって発電された電力が蓄電装置３及びＤＣ電源ラインを介して各投写型表示装置２に供給される構成例を示しているが、各投写型表示装置２が商用電源から直流電圧を生成するＡＣ－ＤＣコンバータを備えている場合は、投写型表示装置２に商用電源から交流電圧を供給してもよい。その場合でも、各投写型表示装置２はＤＣ電源ラインを介して電力（直流電圧）の交換が可能に接続する必要がある。また、図３に示す蓄電装置３に代えてＡＣ－ＤＣコンバータを備え、発電装置４や配電系統から供給される交流電圧を該ＡＣ－ＤＣコンバータにより直流電圧に変換し、ＤＣ電源ラインを介して各投写型表示装置２に供給する構成でもよい。 FIG. 3 shows a configuration example in which the power generated by the power generation device 4 is supplied to each projection display device 2 via the power storage device 3 and the DC power supply line. When an AC-DC converter that generates a DC voltage from a commercial power supply is provided, an AC voltage may be supplied to the projection display device 2 from the commercial power supply. Even in such a case, each projection display device 2 needs to be connected via a DC power supply line so that power (DC voltage) can be exchanged. Further, an AC-DC converter is provided in place of the power storage device 3 shown in FIG. 3, and an AC voltage supplied from the power generation device 4 or the distribution system is converted into a DC voltage by the AC-DC converter, and the DC power line is used. The configuration may be such that each projection display device 2 is supplied.
　図３に示す電力供給システムは、例えば複数の会議室や教室等で、それぞれ図１に示した投写型表示装置２を使用する場合に適用できる。 The power supply system shown in FIG. 3 can be applied to the case where the projection display device 2 shown in FIG. 1 is used in, for example, a plurality of conference rooms or classrooms.
　なお、図３では電力供給システムに複数の投写型表示装置２が接続される構成例を示しているが、図１に示した調節部２０１、蓄電部２０４、残容量検出部２０２、接続部２１１及びスイッチ部２０６と同様の機能を備えた装置であれば、図３に示した電力供給システムには、図１に示した投写型表示装置２以外の装置を接続することも可能である。 3 shows a configuration example in which a plurality of projection display devices 2 are connected to the power supply system. However, the adjustment unit 201, the power storage unit 204, the remaining capacity detection unit 202, and the connection unit 211 shown in FIG. As long as the device has the same function as that of the switch unit 206, a device other than the projection display device 2 shown in FIG. 1 can be connected to the power supply system shown in FIG.
　次に、本発明の投写型表示装置の動作及び電力供給システムの動作について図面を用いて説明する。 Next, the operation of the projection display device of the present invention and the operation of the power supply system will be described with reference to the drawings.
　上述したように、図１に示した投写型表示装置２の動作モードには、蓄電部２０４を充電している状態である充電モードと、空間光変調信号生成部２１２、画像信号処理部２１３、空間光変調信号生成駆動部２１４、画像信号処理駆動部２１５、光源部４０１Ｒ、４０１Ｇ及び４０１Ｂ並びに冷却部５０１Ｒ、５０１Ｇ及び５０１Ｂに対する電力供給を停止して、画像を表示していない状態である省電力モードと、蓄電部２０４の電力により画像信号にしたがってスクリーン等に画像を投写表示している状態である通常表示モードとがある。これらの動作モードにおける投写型表示装置２の動作は、いずれも調節部２０１により制御される。 As described above, the operation mode of the projection display device 2 shown in FIG. 1 includes the charging mode in which the power storage unit 204 is charged, the spatial light modulation signal generation unit 212, the image signal processing unit 213, Power saving in a state where the power supply to the spatial light modulation signal generation driving unit 214, the image signal processing driving unit 215, the light source units 401R, 401G, and 401B and the cooling units 501R, 501G, and 501B is stopped and no image is displayed. There are a mode and a normal display mode in which an image is projected and displayed on a screen or the like according to an image signal by the power of the power storage unit 204. The operations of the projection display device 2 in these operation modes are all controlled by the adjusting unit 201.
　図４は、図１に示した投写型表示装置の充電モードにおける処理手順を示すフローチャートであり、図５Ａ及びＢは、図１に示した投写型表示装置の省電力モードにおける処理手順を示すフローチャートである。また、図６Ａ及びＢは、図１に示した投写型表示装置の通常表示モードにおける処理手順を示すフローチャートである。 4 is a flowchart showing a processing procedure in the charging mode of the projection display device shown in FIG. 1, and FIGS. 5A and 5B are flowcharts showing a processing procedure in the power saving mode of the projection display device shown in FIG. It is. 6A and 6B are flowcharts showing a processing procedure in the normal display mode of the projection display apparatus shown in FIG.
　充電モード時、図４に示すように、調節部２０１は、まずスイッチ部２０６のスイッチ素子２０６－１～２０６－１２をオフにし（ステップＳ１０１）、蓄電部２０４に対する充電停止の指標となる上記目標値Ａを記憶部２０７から読み出す（ステップＳ１０２）。 In the charging mode, as shown in FIG. 4, the adjustment unit 201 first turns off the switch elements 206-1 to 206-12 of the switch unit 206 (step S101), and the target that serves as an indicator for stopping charging of the power storage unit 204 The value A is read from the storage unit 207 (step S102).
　次に、調節部２０１は、スイッチ部２０６のスイッチ素子２０６－１～２０６－１１をオフさせつつ、スイッチ素子２０６－１２をオンにして接続部２１１を介して外部から充電部２０３に電力を供給し（ステップＳ１０３）、充電部２０３により蓄電部２０４に対する充電を開始する（ステップＳ１０４）。 Next, the adjustment unit 201 turns off the switch elements 206-1 to 206-11 of the switch unit 206 and turns on the switch element 206-12 to supply power to the charging unit 203 from the outside via the connection unit 211. (Step S103), the charging unit 203 starts charging the power storage unit 204 (Step S104).
　次に、調節部２０１は、画像信号処理部２１３に対する外部からの画像信号の入力有無を判定する（ステップＳ１０５）。画像信号処理部２１３に対する画像信号の入力が無い場合、調節部２０１は、残容量検出部２０２により蓄電部２０４の残容量値を検出し、該検出した残容量値Ｄを記憶部２０７に格納する（ステップＳ１０６）。続いて、検出した残容量値Ｄが上記目標値Ａを超えたか否かを判定し（ステップＳ１０７）、残容量値Ｄが目標値Ａを超えていない場合はステップＳ１０５からの処理を再び実行する。 Next, the adjustment unit 201 determines whether or not an external image signal is input to the image signal processing unit 213 (step S105). When no image signal is input to the image signal processing unit 213, the adjustment unit 201 detects the remaining capacity value of the power storage unit 204 using the remaining capacity detection unit 202, and stores the detected remaining capacity value D in the storage unit 207. (Step S106). Subsequently, it is determined whether or not the detected remaining capacity value D exceeds the target value A (step S107). If the remaining capacity value D does not exceed the target value A, the processing from step S105 is executed again. .
　残容量値Ｄが目標値Ａを超えている場合、調節部２０１は、充電部２０３に蓄電部２０４に対する充電動作を停止させる（ステップＳ１０８）。また、スイッチ部２０６のスイッチ素子２０６－１２をオフにし（ステップＳ１０９）、予め設定された時間が経過した後、自装置を省電力モードに移行させる（ステップＳ１１０）。そして、さらに予め設定された時間が経過した後、動作モード表示部２２３に省電力モードである旨を表示させて（ステップＳ１１１）処理を終了する。 When the remaining capacity value D exceeds the target value A, the adjustment unit 201 causes the charging unit 203 to stop charging the power storage unit 204 (step S108). Further, the switch element 206-12 of the switch unit 206 is turned off (step S109), and after the preset time has elapsed, the own apparatus is shifted to the power saving mode (step S110). Then, after a preset time has elapsed, the operation mode display unit 223 displays that it is in the power saving mode (step S111), and the process ends.
　ステップＳ１０５の処理にて、画像信号処理部２１３に対する画像信号の入力があると判定した場合、調節部２０１は、予め設定された時間が経過した後、自装置を通常表示モードに移行させ（ステップＳ１１２）、さらに予め設定された時間が経過した後、動作モード表示部２２３に通常表示モードである旨を表示させて（ステップＳ１１３）処理を終了する。 If it is determined in step S105 that there is an input of an image signal to the image signal processing unit 213, the adjustment unit 201 shifts its own device to the normal display mode after a preset time has elapsed (step S105). S112) Further, after a preset time has elapsed, the operation mode display unit 223 displays that the display mode is the normal display mode (step S113), and the process ends.
　省電力モード時、図５Ａに示すように、調節部２０１は、まずスイッチ部２０６のスイッチ素子２０６－１～２０６－１２をオフにし（ステップＳ２０１）、記憶部２０７から蓄電部２０４に対する充電開始の指標となる目標値Ｂ及び電力供給システムに接続された他の投写型表示装置２から電力の供給開始の指標となる目標値Ｃをそれぞれ読み出す（ステップＳ２０２）。 In the power saving mode, as shown in FIG. 5A, the adjustment unit 201 first turns off the switch elements 206-1 to 206-12 of the switch unit 206 (step S201), and starts charging the power storage unit 204 from the storage unit 207. The target value B serving as an index and the target value C serving as an index for starting the supply of power are read from the other projection display devices 2 connected to the power supply system (step S202).
　次に、調節部２０１は、残容量検出部２０２により蓄電部２０４の残容量値を検出し、該検出した残容量値Ｄを記憶部２０７に格納する（ステップＳ２０３）。また、該検出した残容量値Ｄを、電力供給システムに接続された他の投写型表示装置２の調節部２０１へ信号ラインを介して通知する（ステップＳ２０４）。 Next, the adjustment unit 201 detects the remaining capacity value of the power storage unit 204 by the remaining capacity detection unit 202, and stores the detected remaining capacity value D in the storage unit 207 (step S203). Further, the detected remaining capacity value D is notified to the adjustment unit 201 of another projection display device 2 connected to the power supply system via a signal line (step S204).
　続いて、調節部２０１は、残容量検出部２０２で検出した蓄電部２０４の残容量値Ｄが上記目標値Ｃ以下であるか否かを判定し（ステップＳ２０５）、蓄電部２０４の残容量値Ｄが目標値Ｃより大きい場合は、画像信号処理部２１３に対する外部からの画像信号の入力有無を判定する（ステップＳ２０６）。画像信号処理部２１３に対する画像信号の入力が無い場合、調節部２０１は、電力供給システムに接続された他の投写型表示装置２の調節部２０１からの電力供給開始コマンドの入力有無を確認する（ステップＳ２０７）。 Subsequently, the adjustment unit 201 determines whether or not the remaining capacity value D of the power storage unit 204 detected by the remaining capacity detection unit 202 is equal to or less than the target value C (step S205), and the remaining capacity value of the power storage unit 204 is determined. When D is larger than the target value C, it is determined whether or not an image signal is input from the outside to the image signal processing unit 213 (step S206). When no image signal is input to the image signal processing unit 213, the adjustment unit 201 confirms whether or not a power supply start command is input from the adjustment unit 201 of another projection display device 2 connected to the power supply system ( Step S207).
　他の投写型表示装置２からの電力供給開始コマンドの入力が無い場合、調節部２０１はステップＳ２０３からの処理を再び実行する。一方、電力供給開始コマンドの入力が有る場合、調節部２０１は、予め設定された時間が経過した後、スイッチ部２０６のスイッチ素子２０６－１１をオンにし、蓄電部２０４から電力供給開始コマンドを送信した投写型表示装置２に対する電力の供給を開始する、または蓄電部２０４から電力供給開始コマンドを送信した投写型表示装置に対する電力の供給を継続し（ステップＳ２０８）、ステップＳ２０３からの処理を再び実行する。 When there is no input of a power supply start command from the other projection display device 2, the adjustment unit 201 executes the processing from step S203 again. On the other hand, when there is an input of a power supply start command, the adjustment unit 201 turns on the switch element 206-11 of the switch unit 206 and transmits a power supply start command from the power storage unit 204 after a preset time has elapsed. The power supply to the projected display device 2 is started, or the power supply to the projection display device that has transmitted the power supply start command from the power storage unit 204 is continued (step S208), and the processing from step S203 is executed again. To do.
　ステップＳ２０６の処理で画像信号処理部２１３に対する画像信号の入力があると判定した場合、調節部２０１は、電力供給システムに接続された他の投写型表示装置の調節部に電力供給停止コマンドを送信する（ステップＳ２０９）。続いて、予め設定された時間が経過した後、スイッチ部２０６のスイッチ素子２０６－１１をオフにし、蓄電部２０４から外部への電力供給を停止させる（ステップＳ２１０）。また、予め設定された時間が経過した後、自装置を通常表示モードに移行させ（ステップＳ２１１）、さらに予め設定された時間が経過した後、動作モード表示部２２３に通常表示モードである旨を表示させて（ステップＳ２１２）処理を終了する。 If it is determined in step S206 that there is an image signal input to the image signal processing unit 213, the adjustment unit 201 transmits a power supply stop command to the adjustment unit of another projection display device connected to the power supply system. (Step S209). Subsequently, after a preset time has elapsed, the switch element 206-11 of the switch unit 206 is turned off, and the power supply from the power storage unit 204 to the outside is stopped (step S210). In addition, after the preset time has elapsed, the apparatus shifts to the normal display mode (step S211), and after the preset time has elapsed, the operation mode display unit 223 indicates that the normal display mode is set. It is displayed (step S212), and the process is terminated.
　ステップＳ２０５の処理で蓄電部２０４の残容量値Ｄが目標値Ｃ以下であると判定した場合、図５Ｂに示すように、調節部２０１は、電力供給システムに接続された他の投写型表示装置の調節部に電力供給停止コマンドを送信する（ステップＳ２１３）。続いて、予め設定された時間が経過した後、スイッチ部２０６のスイッチ素子２０６－１～２０６－１２をオフにし（ステップＳ２１４）、蓄電部２０４の残容量値Ｄが上記目標値Ｂ以下であるか否かを判定する（ステップＳ２１５）。 If it is determined in step S205 that the remaining capacity value D of the power storage unit 204 is equal to or less than the target value C, as illustrated in FIG. 5B, the adjustment unit 201 is connected to another projection display device connected to the power supply system. A power supply stop command is transmitted to the adjustment unit (step S213). Subsequently, after a preset time has elapsed, the switch elements 206-1 to 206-12 of the switch unit 206 are turned off (step S214), and the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B. Is determined (step S215).
　蓄電部２０４の残容量値Ｄが目標値Ｂ以下である場合、調節部２０１は、予め設定された時間が経過した後、自装置を充電モードに移行させ（ステップＳ２１６）、さらに予め設定された時間が経過した後、動作モード表示部２２３に充電モードである旨を表示させて（ステップＳ２１７）処理を終了する。蓄電部２０４の残容量値Ｄが目標値Ｂよりも大きい場合、調節部２０１は、充電モード移行コマンドの入力有無を確認し（ステップＳ２１８）、充電モード移行コマンドが入力されている場合はステップＳ２１６の処理へ移行する。また、充電モード移行コマンドが入力されていない場合はステップＳ２０３からの処理を再び実行する。 When the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B, the adjustment unit 201 shifts its own device to the charging mode after a preset time has elapsed (step S216), and is further set in advance. After the elapse of time, the operation mode display unit 223 displays that it is in the charging mode (step S217), and the process is terminated. When the remaining capacity value D of the power storage unit 204 is larger than the target value B, the adjustment unit 201 confirms whether or not a charge mode shift command is input (step S218). If the charge mode shift command is input, step S216 is performed. Move on to processing. If the charging mode transition command has not been input, the processing from step S203 is executed again.
　通常表示モード時、図６Ａに示すように、調節部２０１は、まずスイッチ部２０６のスイッチ素子２０６－１～２０６－１２をオフにし（ステップＳ３０１）、記憶部２０７から上記目標値Ｂ及び目標値Ｃをそれぞれ読み出す（ステップＳ３０２）。 In the normal display mode, as shown in FIG. 6A, the adjustment unit 201 first turns off the switch elements 206-1 to 206-12 of the switch unit 206 (step S301), and stores the target value B and the target value from the storage unit 207. C is read out (step S302).
　次に、調節部２０１は、残容量検出部２０２により蓄電部２０４の残容量値を検出し、該検出した残容量値Ｄを記憶部２０７に格納する（ステップＳ３０３）。また、調節部２０１は、電力供給システムに接続された他の投写型表示装置２の調節部２０１から各々の蓄電部２０４の残容量値を受信し、省電力モード状態であり、かつ電力供給停止コマンドを送信していない装置の蓄電部２０４の残容量値Ｅ１～Ｅｎをそれぞれ記憶部２０７に格納する（ステップＳ３０４）。 Next, the adjustment unit 201 detects the remaining capacity value of the power storage unit 204 by the remaining capacity detection unit 202, and stores the detected remaining capacity value D in the storage unit 207 (step S303). In addition, the adjustment unit 201 receives the remaining capacity value of each power storage unit 204 from the adjustment unit 201 of another projection display device 2 connected to the power supply system, is in the power saving mode state, and stops supplying power. The remaining capacity values E1 to En of the power storage unit 204 of the device that has not transmitted the command are stored in the storage unit 207 (step S304).
　次に、調節部２０１は、残容量値Ｄ及び残容量値Ｅ１～Ｅｎに基づいて残容量算出部２０８に残容量時間Ｆを算出させ、残容量算出部２０８で算出された残容量時間Ｆを記憶部２０７に格納する（ステップＳ３０５）。 Next, the adjustment unit 201 causes the remaining capacity calculation unit 208 to calculate the remaining capacity time F based on the remaining capacity value D and the remaining capacity values E1 to En, and uses the remaining capacity time F calculated by the remaining capacity calculation unit 208. The data is stored in the storage unit 207 (step S305).
　次に、調節部２０１は、画像信号処理部２１３に対する外部からの画像信号の入力有無を判定する（ステップＳ３０６）。画像信号処理部２１３に対する画像信号の入力がある場合、残容量時間Ｆがゼロであるか否かを判定し（ステップＳ３０７）、残容量時間Ｆがゼロでなければ、残容量検出部２０２で検出した蓄電部２０４の残容量値Ｄが目標値Ｃ以下であるか否かを判定する（ステップＳ３０８）。蓄電部２０４の残容量値Ｄが目標値Ｃより大きい場合、調節部２０１は、予め設定された時間が経過した後、スイッチ部２０６のスイッチ素子２０６－１～２０６－９をオンにして、蓄電部２０４から光源駆動部２１０Ｒ，２１０Ｇ，２１０Ｂ及び冷却駆動部２０９Ｒ，２０９Ｇ，２０９Ｂを介して光源部４０１Ｒ，４０１Ｇ，４０１Ｂ及び冷却部５０１Ｒ，５０１Ｇ，５０１Ｂに電力を供給し、蓄電部２０４から画像信号処理駆動部２１５及び空間光変調信号生成駆動部２１４を介して画像信号処理部２１３及び空間光変調信号生成部２１２に電力を供給する。また、調節部２０１は、スイッチ部２０６のスイッチ素子２０６－１０～２０６－１２をオフにすることで、ＤＣ電源ラインとの接続を切断する（ステップＳ３０９）。そして、予め設定された時間が経過した後、残容量時間Ｆを、例えばスクリーンに表示させ（ステップＳ３１０）、さらに予め設定された時間が経過した後、動作モード表示部２２３に通常表示モードである旨を表示させ（ステップＳ３１１）、ステップＳ３０３からの処理を再び実行する。 Next, the adjustment unit 201 determines whether or not an external image signal is input to the image signal processing unit 213 (step S306). When there is an image signal input to the image signal processing unit 213, it is determined whether or not the remaining capacity time F is zero (step S307). If the remaining capacity time F is not zero, the remaining capacity detection unit 202 detects it. It is determined whether or not the remaining capacity value D of the stored power storage unit 204 is equal to or less than the target value C (step S308). When the remaining capacity value D of the power storage unit 204 is larger than the target value C, the adjustment unit 201 turns on the switch elements 206-1 to 206-9 of the switch unit 206 after the preset time has elapsed, Power is supplied from the unit 204 to the light source units 401R, 401G, 401B and the cooling units 501R, 501G, and 501B via the light source driving units 210R, 210G, and 210B and the cooling driving units 209R, 209G, and 209B. Power is supplied to the image signal processing unit 213 and the spatial light modulation signal generation unit 212 via the processing drive unit 215 and the spatial light modulation signal generation drive unit 214. Further, the adjustment unit 201 disconnects the DC power supply line by turning off the switch elements 206-10 to 206-12 of the switch unit 206 (step S309). Then, after the preset time has elapsed, the remaining capacity time F is displayed on the screen, for example (step S310), and after the preset time has elapsed, the operation mode display unit 223 is in the normal display mode. Is displayed (step S311), and the processing from step S303 is executed again.
　ステップＳ３０８の処理で蓄電部２０４の残容量値Ｄが目標値Ｃ以下である場合、調節部２０１は、電力供給システムに接続された他の投写型表示装置のうち、省電力モード状態であり、かつ電力供給停止コマンドを送信していない装置のなかから電力供給元を選定し（ステップＳ３１２）、選定した投写型表示装置の調節部に電力供給開始コマンドを送信する（ステップＳ３１３）。そして、予め設定された時間が経過した後、スイッチ部２０６のスイッチ素子２０６－１～２０６－８及び２０６－１０をオンにし、スイッチ素子２０６－９、２０６－１１及び２０６－１２をオフにして、選定した投写型表示装置から供給される電力を、スイッチ部２０６を介して光源駆動部２１０Ｒ，２１０Ｇ，２１０Ｂ、冷却駆動部２０９Ｒ，２０９Ｇ，２０９Ｂ、画像信号処理駆動部２１５及び空間光変調信号生成駆動部２１４に供給する（ステップＳ３１４）。その後、ステップＳ３１０の処理へ移行する。 When the remaining capacity value D of the power storage unit 204 is equal to or less than the target value C in the process of step S308, the adjustment unit 201 is in the power saving mode state among other projection display devices connected to the power supply system, A power supply source is selected from the devices that have not transmitted the power supply stop command (step S312), and a power supply start command is transmitted to the adjustment unit of the selected projection display device (step S313). Then, after a preset time has passed, the switch elements 206-1 to 206-8 and 206-10 of the switch unit 206 are turned on, and the switch elements 206-9, 206-11 and 206-12 are turned off. The power supplied from the selected projection display device is supplied to the light source driving units 210R, 210G, and 210B, the cooling driving units 209R, 209G, and 209B, the image signal processing driving unit 215, and the spatial light modulation signal generation via the switch unit 206. It supplies to the drive part 214 (step S314). Thereafter, the process proceeds to step S310.
　ステップＳ３０７の処理で残容量時間Ｆがゼロである場合、図６Ｂに示すように、調節部２０１は、予め設定された時間が経過した後、残容量時間Ｆを、例えばスクリーンに表示させ（ステップＳ３１５）、さらに予め設定された時間が経過した後、投写型表示装置２を充電モードに移行させる旨を、例えばスクリーンに表示させる（ステップＳ３１６）。そして、予め設定された時間が経過した後、自装置を充電モードに移行させ（ステップＳ３１７）、さらに予め設定された時間が経過した後、動作モード表示部２２３に充電モードである旨を表示させて（ステップＳ３１８）処理を終了する。 When the remaining capacity time F is zero in the process of step S307, as illustrated in FIG. 6B, the adjustment unit 201 displays the remaining capacity time F on, for example, a screen after the preset time has elapsed (step S307). S315) Further, after a preset time has elapsed, a message indicating that the projection display apparatus 2 is to be shifted to the charging mode is displayed on, for example, a screen (step S316). Then, after the preset time has elapsed, the apparatus shifts to the charging mode (step S317), and after the preset time has elapsed, the operation mode display unit 223 displays that it is in the charging mode. (Step S318), the process is terminated.
　ステップＳ３０６の処理で画像信号処理部２１３に対する画像信号の入力がない場合、調節部２０１は、予め設定された時間が経過した後、スイッチ部２０６のスイッチ素子２０６－１～２０６－１２をオフにし（ステップＳ３１９）、蓄電部２０４の残容量値Ｄが目標値Ｂ以下であるか否かを判定する（ステップＳ３２０）。 If no image signal is input to the image signal processing unit 213 in the process of step S306, the adjustment unit 201 turns off the switch elements 206-1 to 206-12 of the switch unit 206 after a preset time has elapsed. (Step S319), it is determined whether or not the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B (Step S320).
　蓄電部２０４の残容量値Ｄが目標値Ｂ以下である場合、調節部２０１は、ステップＳ３１７の処理へ移行する。蓄電部２０４の残容量値Ｄが目標値Ｂより大きい場合、調節部２０１は、充電モード移行コマンドの入力有無を確認し（ステップＳ３２１）、充電モード移行コマンドが入力されている場合はステップＳ３１７の処理へ移行する。また、充電モード移行コマンドが入力されていない場合、調節部２０１は、予め設定された時間が経過した後、自装置を省電力モードに移行させ（ステップＳ３２２）、さらに予め設定された時間が経過した後、動作モード表示部２２３に省電力モードである旨を表示させて（ステップＳ３２３）処理を終了する。 When the remaining capacity value D of the power storage unit 204 is equal to or less than the target value B, the adjustment unit 201 proceeds to the process of step S317. When the remaining capacity value D of the power storage unit 204 is larger than the target value B, the adjustment unit 201 confirms whether or not a charge mode shift command is input (step S321). If the charge mode shift command is input, the control unit 201 proceeds to step S317. Transition to processing. When the charging mode shift command is not input, the adjustment unit 201 shifts its own device to the power saving mode after the preset time has elapsed (step S322), and the preset time has elapsed. After that, the operation mode display unit 223 displays that it is in the power saving mode (step S323), and the process ends.
　なお、図６Ａ及びＢでは、残容量時間算出部２０８で算出された残容量時間Ｆや充電モードへ移行する旨をスクリーンに表示する例を示しているが、これらは、例えば動作モード表示部２２３に表示する等、他の方法で投写型表示装置２の利用者に通知してもよい。 6A and 6B show an example in which the remaining capacity time F calculated by the remaining capacity time calculation unit 208 and a message indicating the transition to the charging mode are displayed on the screen. These are, for example, the operation mode display unit 223. The user of the projection display apparatus 2 may be notified by other methods such as displaying on the screen.
　また、図６Ａ及びＢでは、蓄電部２０４を、充電状態または電力を供給する状態のいずれか一方に切り換える制御例を示しているが、例えばスイッチ素子２０６－９～２０６－１２のオン／オフをスクリーンへの画像表示に影響しない速度（例えば１ｋＨｚ以上）で切り換えることで、投写型表示装置２を通常表示モードで動作させつつ、充電部２０３により蓄電部２０４の充電を同時に行ってもよい。 6A and 6B show a control example in which the power storage unit 204 is switched to either a charging state or a state in which power is supplied. For example, switching elements 206-9 to 206-12 are turned on / off. By switching at a speed that does not affect the image display on the screen (for example, 1 kHz or higher), the charging unit 203 may simultaneously charge the power storage unit 204 while operating the projection display device 2 in the normal display mode.
　図７は、図３に示した電力供給システムの動作の一例を示すタイミングチャートである。 FIG. 7 is a timing chart showing an example of the operation of the power supply system shown in FIG.
　ここでは、電源ラインに３台の投写型表示装置２（以下、第１の投写型表示装置２１、第２の投写型表示装置２２、第３の投写型表示装置２３と表記する）が接続され、第１の投写型表示装置２１、第２の投写型表示装置２２及び第３の投写型表示装置２３の通常表示モードにおける消費電力は同一であるものとする。また、第１の投写型表示装置２１、第２の投写型表示装置２２及び第３の投写型表示装置２３が備える蓄電部２０４の容量は同一であり、第１の投写型表示装置２１、第２の投写型表示装置２２及び第３の投写型表示装置２３は、蓄電部２０４から供給される電力により通常表示モードにて最大で６時間の画像表示が可能であるものとする。蓄電部２０４は、３台同時または１台ずつ順次充電しても３時間以内に充電が完了するものとし、全ての投写型表示装置２は、例えば未使用の時間帯である０時～３時にて毎日充電されているものとする。 Here, three projection display devices 2 (hereinafter referred to as a first projection display device 2 1 , a second projection display device 2 2 , and a third projection display device 2 3 ) in the power line. There are connected, a first projection type display device 2 1, power consumption in the second projection display apparatus 2, second and third normal display mode of the projection display device 2 3 is assumed to be identical. The capacitance of the first projection display device 2 1, second projection type display device 2, second and third projection type display device 2 3 is provided with the power storage unit 204 are the same, the first projection display apparatus 2 1 , the second projection display device 2 2 and the third projection display device 2 3 are capable of displaying an image for up to 6 hours in the normal display mode by the power supplied from the power storage unit 204. And Even if three power storage units 204 are charged simultaneously or sequentially one by one, the charging is completed within 3 hours. For example, all the projection display devices 2 are in an unused time zone of 0:00 to 3:00. Be charged every day.
　図７に示す例では、第１日目において、第１の投写型表示装置２１は９時～２１時（１２時間）まで連続して使用され、この期間で通常表示モードが維持されているものとする。また、第２の投写型表示装置２２は、１２時～１５時（３時間）まで連続して使用され、この期間で通常表示モードが維持されているものとする。また、第３の投写型表示装置２３は、９時～１２時（３時間）まで連続して使用され、この期間で通常表示モードが維持されているものとする。 In the example shown in FIG. 7, in the first day, the first projection display device 2 1 is used continuously until 9:00 am to 21 (12 hours), it is maintained normal display mode in this period Shall. The second projection type display device 2 2 is used continuously until 12:00 to 15 (3 hours), it is assumed to be maintained normal display mode in this period. The third projection type display device 2 3 is used continuously until 9:00 to 12 (3 hours), it is assumed to be maintained normal display mode in this period.
　この場合、上述したように各蓄電部２０４は、最大で６時間の画像表示が可能な容量であるため、第１の投写型表示装置２１では、１５時の時点でその蓄電部２０４の残容量値Ｄが上記目標値Ｃへ到達する。 In this case, the power storage unit 204 as described above, since an image that can display capacity up to 6 hours, in the first projection display device 2 1, of the power storage unit 204 at the point of time 15 remaining The capacitance value D reaches the target value C.
　本実施形態の電力供給システムに接続された第１の投写型表示装置２１は、図６に示した処理手順にしたがって、１５時～１８時の期間では第３の投写型表示装置２３の蓄電部２０４から供給される電力で動作する。その場合、第３の投写型表示装置２３の蓄電部２０４の残容量値Ｄは１８時の時点で目標値Ｃへ到達する。したがって、第１の投写型表示装置２１は、１８時～２１時の期間では第２の投写型表示装置２２の蓄電部２０４から供給される電力で動作する。 The first projection display device 2 1 connected to the power supply system of this embodiment, in accordance with the processing procedure shown in FIG. 6, in a period of 15:00 to 18 of the third projection type display device 2 3 It operates with electric power supplied from the power storage unit 204. In that case, the remaining capacity value D of the power storage unit 204 of the third projection display device 23 reaches the target value C at 18:00. Therefore, the first projection display device 2 1, in the period of 18:00 to 21 operates with power supplied from the second projection display apparatus 2 2 power storage unit 204.
　一方、第２日目おいて、第１の投写型表示装置２１は１２時～１５時（３時間）まで連続して使用され、この期間で通常表示モードが維持されているものとする。また、第２の投写型表示装置２２は９時～２１時（１２時間）まで連続して使用され、この期間で通常表示モードが維持されているものとする。また、第３の投写型表示装置２３は１２時～１５時（３時間）まで連続して使用され、この期間で通常表示モードが維持されているものとする。 On the other hand, at the second day, the first projection display device 2 1 is used continuously until 12:00 to 15 (3 hours), it is assumed that a normal display mode is maintained during this period. The second projection type display device 2 2 is used continuously until 9:00 am to 21 (12 hours), it is assumed to be maintained normal display mode in this period. The third projection type display device 2 3 is used continuously until 12:00 to 15 (3 hours), it is assumed that a normal display mode is maintained during this period.
　この場合、第２の投写型表示装置２２の蓄電部２０４の残容量値Ｄは、第２日目の１５時の時点で目標値Ｃに到達する。 In this case, the remaining capacity value D of the power storage unit 204 of the second projection display device 22 reaches the target value C at 15:00 on the second day.
　本実施形態の電力供給システムに接続された第２の投写型表示装置２２は、図６に示した処理手順にしたがって、１５時～１８時の期間では第３の投写型表示装置２３の蓄電部２０４から供給される電力で動作する。その場合、第３の投写型表示装置２３の蓄電部２０４の残容量値Ｄは１８時の時点で目標値Ｃに到達する。したがって、第２の投写型表示装置２２は、１８時～２１時の期間では、第１の投写型表示装置２１の蓄電部２０４から供給される電力で動作する。 The second projection display apparatus 2 2 connected to a power supply system of this embodiment, in accordance with the processing procedure shown in FIG. 6, in a period of 15:00 to 18 of the third projection type display device 2 3 It operates with electric power supplied from the power storage unit 204. In this case, the remaining capacity value D of the power storage unit 204 of the third projection display device 23 reaches the target value C at 18:00. Therefore, the second projection display apparatus 2 2, in the period of 18:00 to 21, operates by the power supplied from the first projection display apparatus 2 1 of power storage unit 204.
　本発明によれば、通常表示モード時、蓄電部２０４の残容量値Ｄが目標値Ｃ以下である場合、調節部２０１により接続部２１１を介して接続された他の投写型表示装置２へ該投写型表示装置２が備える蓄電部２０４からの電力の供給を要求する電力供給開始コマンドを送信すると共に、スイッチ部２０６を制御することで接続部２１１を介して該投写型表示装置から供給される電力を各駆動部へ供給することで、複数の投写型表示装置２が備える蓄電部２０４を各投写型表示装置２で共用することが可能になる。そのため、投写型表示装置２は、蓄電部２０４の容量を超えて連続して通常表示モードで動作させることが可能になる。また、複数の投写型表示装置２が備える蓄電部２０４を各投写型表示装置２で共用可能にすることで、１台の投写型表示装置２が備える蓄電部２０４の容量を小さくすることが可能であり、蓄電部２０４を備えた投写型表示装置２のコスト、容積、重量を抑制できる。 According to the present invention, in the normal display mode, when the remaining capacity value D of the power storage unit 204 is equal to or less than the target value C, the adjustment unit 201 connects to the other projection display device 2 connected via the connection unit 211. A power supply start command for requesting power supply from the power storage unit 204 included in the projection display device 2 is transmitted, and the switch unit 206 is controlled to be supplied from the projection display device via the connection unit 211. By supplying electric power to each drive unit, the power storage unit 204 provided in the plurality of projection display devices 2 can be shared by the projection display devices 2. Therefore, the projection display device 2 can be operated continuously in the normal display mode beyond the capacity of the power storage unit 204. Further, by allowing the power storage units 204 included in the plurality of projection display devices 2 to be shared by each projection display device 2, the capacity of the power storage unit 204 included in one projection display device 2 can be reduced. Thus, the cost, volume, and weight of the projection display device 2 including the power storage unit 204 can be suppressed.
　以上、実施形態を参照して本願発明を説明したが、本願発明は上記実施形態に限定されものではない。本願発明の構成や詳細は本願発明のスコープ内で当業者が理解し得る様々な変更が可能である。 As mentioned above, although this invention was demonstrated with reference to embodiment, this invention is not limited to the said embodiment. Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

Claims (5)

  1. 　画像を投写表示する投写型表示装置であって、
    　蓄電池を含む蓄電部と、
    　前記画像の投写表示で用いる部位へ所要の電力を供給する駆動部と、
    　前記蓄電部に蓄積された電気量である残容量値を検出する残容量検出部と、
    　前記蓄電部の電力を外部へ供給すると共に、外部から供給される電力を前記駆動部へ供給するためのインタフェースである接続部と、
    　前記蓄電部から前記駆動部へ供給する電力をオンまたはオフし、前記蓄電部から前記接続部を介して外部へ供給する電力をオンまたはオフし、前記接続部を介して外部から前記駆動部へ供給される電力をオンまたはオフするスイッチ部と、
    　前記画像を投写表示する通常表示モード時、前記残容量検出部で検出された前記蓄電部の残容量値が予め設定された目標値よりも大きい場合、前記スイッチ部を制御することで前記蓄電部から前記駆動部へ電力を供給させ、該残容量値が前記目標値以下である場合、前記接続部を介して接続された他の装置へ該装置が備える蓄電部からの電力の供給を要求する電力供給開始コマンドを送信すると共に、前記スイッチ部を制御することで前記接続部を介して該装置から供給される電力を前記駆動部へ供給させる調節部と、
    を有する投写型表示装置。     A projection display device that projects and displays an image,
    A power storage unit including a storage battery;
    A drive unit for supplying required power to a part used in the projection display of the image;
    A remaining capacity detection unit that detects a remaining capacity value that is the amount of electricity stored in the power storage unit;
    While supplying the power of the power storage unit to the outside, a connection unit that is an interface for supplying power supplied from the outside to the drive unit,
    The power supplied from the power storage unit to the drive unit is turned on or off, the power supplied from the power storage unit to the outside through the connection unit is turned on or off, and the power is supplied from the outside to the drive unit through the connection unit. A switch unit for turning on or off the supplied power; and
    In the normal display mode for projecting and displaying the image, when the remaining capacity value of the power storage unit detected by the remaining capacity detection unit is larger than a preset target value, the power storage unit is controlled by controlling the switch unit. When the remaining capacity value is less than or equal to the target value, the power is supplied from the power storage unit included in the device to another device connected via the connection unit. An adjustment unit that transmits a power supply start command and controls the switch unit to supply power supplied from the device to the drive unit via the connection unit;
    A projection display device.
  2. 　前記調節部は、
    　前記画像を投写表示しない省電力モード時、前記残容量検出部で検出された前記蓄電部の残容量値が予め設定された目標値よりも大きい場合、前記接続部を介して接続された他の装置から前記電力供給開始コマンドを受信すると、前記スイッチ部を制御することで前記接続部を介して該装置へ前記蓄電部から電力を供給し、前記残容量値が前記目標値以下である場合、前記接続部を介して接続された他の装置へ電力の供給不可を通知するための電力供給停止コマンドを送信し、
    　前記通常表示モード時、前記電力供給停止コマンドを受信すると、該電力供給停止コマンドの送信元の装置を、前記電力供給開始コマンドを送信する対象から除外する請求項１記載の投写型表示装置。     The adjusting unit is
    In the power saving mode in which the image is not projected and displayed, if the remaining capacity value of the power storage unit detected by the remaining capacity detection unit is larger than a preset target value, another connected through the connection unit When receiving the power supply start command from the device, the power is supplied from the power storage unit to the device through the connection unit by controlling the switch unit, and the remaining capacity value is equal to or less than the target value, Sending a power supply stop command for notifying that other devices connected via the connection unit cannot supply power;
    2. The projection display device according to claim 1, wherein when the power supply stop command is received in the normal display mode, a device that is a transmission source of the power supply stop command is excluded from a target to which the power supply start command is transmitted.
  3. 　請求項１または２記載の投写型表示装置を複数備え、
    　前記複数の投写型表示装置が、前記接続部を介して電力の交換が可能に接続された投写型表示装置の電力供給システム。     A plurality of projection display devices according to claim 1 or 2,
    A power supply system for a projection display apparatus, wherein the plurality of projection display apparatuses are connected to each other through the connection unit so that power can be exchanged.
  4. 　蓄電池を含む蓄電部と、
    　画像の投写表示で用いる部位へ所要の電力を供給する駆動部と、
    　前記蓄電部に蓄積された電気量である残容量値を検出する残容量検出部と、
    　前記蓄電部の電力を外部へ供給すると共に、外部から供給される電力を前記駆動部へ供給するためのインタフェースである接続部と、
    　前記蓄電部から前記駆動部へ供給する電力をオンまたはオフし、前記蓄電部から前記接続部を介して外部へ供給する電力をオンまたはオフし、前記接続部を介して外部から前記駆動部へ供給される電力をオンまたはオフするスイッチ部と、
    を備え、前記接続部を介して電力の交換が可能に接続された複数の投写型表示装置に対する電力供給方法であって、
    　前記画像を投写表示する通常表示モード時、
    　前記残容量検出部で検出された前記蓄電部の残容量値が予め設定された目標値よりも大きい場合、前記スイッチ部を制御することで前記蓄電部から前記駆動部へ電力を供給し、
    　該残容量値が前記目標値以下である場合、前記接続部を介して接続される他の装置へ該装置が備える蓄電部による電力の供給を要求する電力供給開始コマンドを送信すると共に、前記スイッチ部を制御することで前記接続部を介して該装置から供給される電力を前記駆動部へ供給する電力供給方法。     A power storage unit including a storage battery;
    A drive unit for supplying required power to a part used for image projection display;
    A remaining capacity detection unit that detects a remaining capacity value that is the amount of electricity stored in the power storage unit;
    While supplying the power of the power storage unit to the outside, a connection unit that is an interface for supplying power supplied from the outside to the drive unit,
    The power supplied from the power storage unit to the drive unit is turned on or off, the power supplied from the power storage unit to the outside through the connection unit is turned on or off, and the power is supplied from the outside to the drive unit through the connection unit. A switch unit for turning on or off the supplied power; and
    Comprising: a power supply method for a plurality of projection display devices connected via the connection portion so that power can be exchanged,
    In the normal display mode for projecting and displaying the image,
    When the remaining capacity value of the power storage unit detected by the remaining capacity detection unit is larger than a preset target value, power is supplied from the power storage unit to the drive unit by controlling the switch unit,
    When the remaining capacity value is less than or equal to the target value, a power supply start command for requesting power supply by the power storage unit included in the device is transmitted to another device connected via the connection unit, and the switch A power supply method for supplying power supplied from the device to the drive unit via the connection unit by controlling a unit.
  5. 　前記画像を投写表示しない省電力モード時、
    　前記残容量検出部で検出された前記蓄電部の残容量値が予め設定された目標値よりも大きい場合、前記接続部を介して接続される他の装置から前記電力供給開始コマンドを受信すると、前記スイッチ部を制御することで前記接続部を介して該装置へ前記蓄電部から電力を供給し、
    　前記残容量値が前記目標値以下である場合、前記接続部を介して接続された他の装置へ電力の供給不可を通知するための電力供給停止コマンドを送信し、
    　前記通常表示モード時、
    　前記電力供給停止コマンドを受信すると、該電力供給停止コマンドの送信元の装置を、前記電力供給開始コマンドを送信する対象から除外する請求項４記載の電力供給方法。     In power saving mode in which the image is not projected and displayed,
    When the remaining capacity value of the power storage unit detected by the remaining capacity detection unit is larger than a preset target value, when receiving the power supply start command from another device connected through the connection unit, By supplying power from the power storage unit to the device via the connection unit by controlling the switch unit,
    If the remaining capacity value is less than or equal to the target value, send a power supply stop command for notifying the supply of power to other devices connected via the connection unit,
    In the normal display mode,
    5. The power supply method according to claim 4, wherein when the power supply stop command is received, an apparatus that is a transmission source of the power supply stop command is excluded from a target to which the power supply start command is transmitted.
PCT/JP2010/051770 2010-02-08 2010-02-08 Projection display device and power supply system for same WO2011096077A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2010/051770 WO2011096077A1 (en) 2010-02-08 2010-02-08 Projection display device and power supply system for same
JP2011552627A JP5322328B2 (en) 2010-02-08 2010-02-08 Projection display device and power supply system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/051770 WO2011096077A1 (en) 2010-02-08 2010-02-08 Projection display device and power supply system for same

Publications (1)

Publication Number Publication Date
WO2011096077A1 true WO2011096077A1 (en) 2011-08-11

Family

ID=44355104

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/051770 WO2011096077A1 (en) 2010-02-08 2010-02-08 Projection display device and power supply system for same

Country Status (2)

Country Link
JP (1) JP5322328B2 (en)
WO (1) WO2011096077A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112305843A (en) * 2020-10-21 2021-02-02 华域视觉科技(上海)有限公司 Laser projection feedback adjustment system and method and vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006094186A (en) * 2004-09-24 2006-04-06 Nikon Corp Projector system, mobile phone, and camera
JP2006295498A (en) * 2005-04-08 2006-10-26 Canon Inc Projector
JP2007074651A (en) * 2005-09-09 2007-03-22 Nikon Corp Electronic apparatus with projector
JP2007272341A (en) * 2006-03-30 2007-10-18 Toshiba Corp Arithmetic device, arithmetic device system, and power control method
JP2009205050A (en) * 2008-02-29 2009-09-10 Seiko Epson Corp Projection system and projector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006094186A (en) * 2004-09-24 2006-04-06 Nikon Corp Projector system, mobile phone, and camera
JP2006295498A (en) * 2005-04-08 2006-10-26 Canon Inc Projector
JP2007074651A (en) * 2005-09-09 2007-03-22 Nikon Corp Electronic apparatus with projector
JP2007272341A (en) * 2006-03-30 2007-10-18 Toshiba Corp Arithmetic device, arithmetic device system, and power control method
JP2009205050A (en) * 2008-02-29 2009-09-10 Seiko Epson Corp Projection system and projector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112305843A (en) * 2020-10-21 2021-02-02 华域视觉科技(上海)有限公司 Laser projection feedback adjustment system and method and vehicle

Also Published As

Publication number Publication date
JP5322328B2 (en) 2013-10-23
JPWO2011096077A1 (en) 2013-06-10

Similar Documents

Publication Publication Date Title
US9128358B2 (en) Projector and projector system
CN102450021B (en) Projection-type display and control thereof
US6588907B1 (en) Self-contained cool-down system for a video projector
US10790695B2 (en) Splicing display screen, method for powering the same, and display device
EP2611016B1 (en) Power supply and display apparatus having the same
CN105702216B (en) Light Source Control Equipment and image projecting equipment
JP2012215750A (en) Projector
US11032526B2 (en) Projection device, projection method and projection system
CN103369282B (en) Projection type image display apparatus, display system and display methods
US20090146605A1 (en) Electronic apparatus, and method of charging a remote control device
JP5322328B2 (en) Projection display device and power supply system thereof
US9470962B2 (en) Discharge lamp driving device, projector, and method for driving a discharge lamp
JP2015184299A (en) Projector and projector control method
JP3931636B2 (en) Control according to the remaining battery capacity of a battery-powered projector
JP2015087575A (en) Projector and projector control method
JP2014038129A (en) Image projection device, and control method and control program therefor
JPH11133505A (en) Projector
CN107483905A (en) A kind of portable laser projector with Type C interface
JP5376690B2 (en) Projection display device, light source control device for projection display device, and light source control method
JP5493324B2 (en) Electronics
JP2004012724A (en) Cooling device and projection type video display device having the same
US11147439B2 (en) Endoscope light source device and endoscope system
JP2014039445A (en) Battery device, imaging apparatus, and charger
EP3742726A1 (en) Projection device, projection method and projection system
CN112332468B (en) Projection system and wireless charging method thereof

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10845212

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2011552627

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10845212

Country of ref document: EP

Kind code of ref document: A1