JP2010093534A - Television broadcast-receiving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television broadcast-receiving apparatus that allows a user to properly obtain and manage the power storage amount of an optical power-generation part and the operable time of a main operation part. <P>SOLUTION: The television broadcast-receiving apparatus includes an optical power-generation part 10 that converts optical energy into electric energy so as to store power, a main operation part 20 that is operated by receiving power supply from the optical power-generation part 10. The main operation part 20 includes: an antenna 21 for receiving a television broadcast signal; a tuner 22 for executing channel selection of a desired program signal from the television broadcast signal; a demodulator 23 for decoding the program signal to a video signal; a display panel 24 for executing screen display on the basis of the video signal; and a control part 25 that calculates the displayable time of the display panel 24 on the basis of the power storage amount and the predicted power-generation amount of the optical power-generation part 10 and the predicted power consumption of the main operation part 20 so as to display the displayable time on the display panel 24 or its own display part 251. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a television broadcast receiver provided with a photovoltaic power generation unit as a power supply source to a main operation unit.

  FIG. 8 is a block diagram showing a conventional example of a television broadcast receiving apparatus. As shown in FIG. 8, the conventional television broadcast receiving apparatus includes an antenna unit 101 that receives a television broadcast signal, a tuner unit 102 that selects a desired program signal from the television broadcast signal, A demodulator unit 103 that decodes the program signal into a video signal; a display panel unit 104 that performs screen display based on the video signal; and a power converter unit 105 that converts commercial AC power into DC power. Thus, the power supply is supplied from the commercial AC power supply 200 to operate.

In addition, Patent Document 1 and Patent Document 2 can be cited as examples of related art related to the above.
JP 2006-115106 A Special table 2008-517302 gazette

  Certainly, when an LED display panel is used as the display panel unit 104, the power consumption is large, so that it is common to use the commercial AC power supply 200.

  By the way, in recent years, in the field of television broadcast receivers, the photovoltaic power generation unit that converts solar energy into electrical energy and stores it is also used as a power supply source in the field of television broadcast receivers due to the growing awareness of global environmental conservation. There is a demand to use as.

  However, since the photovoltaic power generation unit largely fluctuates depending on the sunshine situation, when using a photovoltaic power generation unit that is not managed or controlled at all as a power supply source of the television broadcast receiving device, When the broadcast time of the program that the user plans to watch or record is reached, the amount of power stored in the solar power generation unit will be insufficient, and the reception, display, and recording will not be completed normally. There was a risk of something happening.

  In the prior art of Patent Document 1, the solar power generation system is efficiently operated and the digital television broadcast is received by acquiring weather information, etc., but the displayable time is set based on the viewing schedule and power consumption. There was no function to predict, and in order to know this, the user had to do the calculation himself.

  In the prior art of Patent Document 2, the power consumption of the display is measured, but this is a device for measuring the standard specifications of the display to the last, and in actual operation, the daily power consumption is reduced. The user had to manage it himself.

  In view of the above problems, the present invention provides a television broadcast receiver capable of appropriately grasping and managing the amount of power stored in the photovoltaic power generation unit and the operable time of the main operation unit without bothering the user. The main purpose is to provide

  In order to achieve the above object, a television broadcast receiver according to the present invention includes a photovoltaic power generation unit that converts light energy into electrical energy and stores it, and a main operation unit that operates by receiving power supply from the photovoltaic power generation unit. And the main operation unit includes an antenna unit that receives a television broadcast signal; and a tuner unit that selects a desired program signal from the television broadcast signal; A demodulator unit that decodes the program signal into a video signal; a display panel unit that displays a screen based on the video signal; a power storage amount and a predicted power generation amount of the photovoltaic unit; and a predicted power consumption of the main operation unit And a control unit that calculates a displayable time of the display panel unit and displays it on the display panel unit or its own display unit (first configuration).

  In the television broadcast receiving apparatus having the first configuration, the control unit divides the integrated power generation amount generated by the photovoltaic power generation unit every day and the integrated power generation amount by the daily sunshine hours. Unit power generation amount, integrated power consumption consumed by the main operating unit per day, unit power consumption obtained by dividing the integrated power consumption by the display time of the day, daily sunshine hours, and the monthly average It is preferable to calculate at least one of the annual averages and update at least one of the previous day data, the monthly table, and the annual table stored in its own storage unit (second configuration).

  In the television broadcast receiving apparatus having the second configuration, the control unit stores the predicted power generation amount of the photovoltaic power generation unit and the predicted power consumption of the main operation unit in its own storage unit. It is preferable to use a configuration (third configuration) in which at least one of the previous day data, the monthly table, and the annual table is referred to as the prediction reference information.

  Further, in the television broadcast receiving apparatus having the third configuration, the control unit is configured to measure sunshine hours of the day based on an output of an illuminance sensor unit provided in the photovoltaic unit (fourth). (Configuration).

  In the television broadcast receiving apparatus having the fourth configuration, the control unit includes a reservation function unit that performs at least one of program display reservation and recording reservation, and when accepting a user's reservation operation, Based on the storage amount and predicted power generation amount of the photovoltaic power generation unit and the predicted power consumption of the main operation unit, it is determined whether or not the reservation target program is reserved, and the determination result is displayed on the display panel unit or its own display unit. A configuration (fifth configuration) is preferable.

  In the television broadcast receiving apparatus having the fifth configuration, the control unit may be configured to receive a selection operation for the prediction criterion information (sixth configuration) when the reservation possibility determination is performed.

  Further, in the television broadcast receiving apparatus having any one of the first to sixth configurations, the control unit includes at least one of an operation unit that receives a user's direct operation and a communication unit that receives a user's remote operation. (7th configuration).

  Further, in the television broadcast receiving apparatus having any one of the first to seventh configurations, the control unit displays a warning message to that effect when the amount of power stored in the photovoltaic unit is below a predetermined value. May be configured to be displayed on the display unit or its own display unit (eighth configuration).

  In the television broadcast receiving apparatus having any one of the first to eighth configurations, the main operation unit includes a power conversion unit that converts commercial AC power into DC power, and a power supply source to the main operation unit. And a power supply switching unit that selects one of the photovoltaic unit and the power conversion unit, and the control unit, when the storage amount of the photovoltaic unit falls below a predetermined value, A power supply switching unit may be controlled to switch the power supply source to the main operation unit from the photovoltaic power generation unit to the power conversion unit (a ninth configuration).

  In the television broadcast receiving apparatus having any one of the first to ninth configurations, the control unit may be configured to perform time setting based on GPS information (tenth configuration).

  Further, in the television broadcast receiving apparatus having any one of the first to tenth configurations, the control unit expands / reduces a screen display range of the display panel unit based on an information amount of the video signal. (Eleventh configuration) is preferable.

  In the television broadcast receiving apparatus having any one of the first to eleventh configurations, the display panel unit may be configured to be an LED display panel (a twelfth configuration).

  Further, in the television broadcast receiving apparatus having any one of the first to twelfth configurations, the control unit is configured to output the display panel unit based on an output of a luminance sensor unit provided in the vicinity of the display panel unit. A configuration for performing luminance control (a thirteenth configuration) is preferable.

  With the television broadcast receiving apparatus according to the present invention, it is possible to appropriately grasp and manage the power storage amount of the photovoltaic power generation unit and the operable time of the main operation unit without bothering the user.

  FIG. 1 is a schematic external view of a television broadcast receiving apparatus according to the present invention, and FIG. 2 is a block diagram of the television broadcast receiving apparatus according to the present invention. As shown in FIGS. 1 and 2, the television broadcast receiver according to the present invention converts solar energy into electrical energy and stores it, and receives power from the solar power generator 10. And a main operating unit 20 that operates upon receiving.

  The solar power generation unit 10 uses a photovoltaic effect to directly convert solar energy into direct-current power (in this specification, not only a single solar cell but also a plurality of solar cells in series) (Including a solar cell module formed by connection or a solar cell array formed by connecting a plurality of solar cell modules in series), a capacitor 12 for storing DC power generated by the solar cell 11, and a solar cell 11 in the vicinity. And an illuminance sensor 13 for detecting the presence or absence of sunlight.

  The main operation unit 20 includes an antenna unit 21 that receives a television broadcast signal, a tuner unit 22 that selects a desired program signal from the television broadcast signal, and a demodulator unit 23 that decodes the program signal into a video signal. A display panel unit 24 (for example, an LED display panel) that performs screen display based on the video signal, a control unit 25 that performs overall control of the operation of the main operation unit 20, and commercial AC power supplied from a commercial AC power source 30. A power conversion unit 26 that converts the power into desired DC power, a power supply switching unit 27 that selects one of the photovoltaic power generation unit 10 and the power conversion unit 26 as a power supply source to the main operation unit 20, and a display panel unit And a luminance sensor unit 28 provided in the vicinity of 24 for measuring the ambient luminance.

  1 and 2, the main operation unit 20 includes a controller unit 20A (including an antenna unit 21, a tuner unit 22, a demodulator unit 23, a control unit 25, a power conversion unit 26, and a power supply switching unit 27). In the above description, the display unit 20B (including the display panel unit 24 and the luminance sensor unit 28) is separately formed. However, the configuration of the present invention is not limited to this, and both units 20A are provided. 20B may be integrally formed.

  Next, the configuration and operation of the control unit 25 that performs overall control of the operation of the main operation unit 20 will be described in detail. As shown in FIG. 2, the control unit 25 includes a display unit 251, a storage unit 252, a reservation function unit 253, an operation unit 254, a communication unit 255, and a GPS reception unit 256.

  The display unit 251 is a means for displaying various setting information and the current time of the television broadcast receiving apparatus, and further the displayable time of the display panel unit 24 to be described later, such as a liquid crystal display or an organic EL [Electro-Luminescence] display. Etc. can be used.

  The storage unit 252 is an operation program executed by the control unit 25 and its work data, various setting information of the television broadcast receiver (including setting information related to display reservation and recording reservation), and the predicted power generation amount of the solar power generation unit 10 And prediction reference information (previous day data, monthly table, annual table) that is referred to when predicting the predicted power consumption of the main operating unit 20, and information related to the recorded program (recording date and time in addition to the video signal to be recorded) (Including incidental information such as channel number) and ROM (Read Only Memory), RAM [Ramdom Access Memory], hard disk drive, optical disk drive, flash memory, etc., depending on the information to be stored. It can be used as appropriate.

  The reservation function unit 253 is a means for performing processing related to program display reservation and recording reservation. Note that the program display reservation means that when a broadcast time of a program reserved by the user arrives, a tuning program of the tuner unit 22 and an on / off control of the display panel unit 24 are performed, whereby a desired program is selected. This is a function of automatically displaying on the display panel unit 24. The program recording reservation means that when the broadcast time of a program reserved by the user has arrived, a tuning program of the tuner unit 22 and an access control of the storage unit 252 are performed, whereby a desired program is stored in the storage unit 252. It is a function to record automatically.

  The operation unit 254 is an interface unit that accepts a user's direct operation (in this case, general user operation excluding remote operation via a network), and is used to call up character keys, numeric keys, and various functions. It has buttons, switches, and a touch panel. Further, as the operation unit 254, an option unit (a keyboard, a mouse, a remote controller, etc.) that cooperates with the controller unit 20A may be used.

  The communication unit 255 is an interface unit that receives a remote operation of a user from a remote terminal 40 (such as a personal computer or a portable terminal) connected via a network (Internet or LAN [Local Area Network]). Note that the connection form to the network by the communication unit 255 may be wired connection or wireless connection. Thus, by providing the communication unit 255 that performs network communication with the remote terminal 40, the user can operate this remotely even if the user is not at the installation location of the television broadcast receiver. Therefore, for example, it is possible to newly set a recording reservation for a program from outside, or to arbitrarily confirm, change, or delete a reservation content that has already been set.

  The GPS receiver 256 is means for receiving GPS information transmitted from the GPS satellite 50. The GPS information includes time data with extremely high accuracy recorded by an atomic clock, and the control unit 25 sets (calibrates) the current time based on the GPS information received by the GPS receiving unit 256. It is set as the structure which performs. By adopting such a configuration, it is possible to accurately make a reservation for program display and recording, and it is possible to display the correct current time on the display panel unit 24 and the display unit 251. However, the setting (calibration) of the current time may be performed manually or may be performed at the time of factory shipment. Further, time data may be acquired from an NTP [Network Time Protocol] server via the communication unit 255, and the current time may be set (calibrated) based on the time data.

  Next, the calculation process of the displayable time by the control unit 25 will be described in detail with reference to FIG. FIG. 3 is a diagram illustrating a calculation method of the displayable time by the control unit 25. In addition, the vertical axis | shaft of FIG. 3 has shown the electrical storage amount of the solar power generation part 10, and the horizontal axis has shown progress of time.

  In the example of FIG. 3, the display panel unit 24 is not driven from time t1 (sunshine start time) to time t2 (display start time on the display panel unit 24), and the power consumption of the main operation unit 20 is small. The power storage unit 12 of the solar power generation unit 10 stores almost all the power generation amount of the solar battery 11, and the power storage amount X of the solar power generation unit 10 increases by an amount corresponding to the amount of sunlight. On the other hand, when the display on the display panel unit 24 is started at time t2, the display panel unit 24 consumes electric power along with the display operation. That is, after time t2, the amount of stored electricity X of the photovoltaic power generation unit 10 is predicted to change with the behavior indicated by the broken line in FIG. More specifically, depending on the magnitude relationship between the predicted power generation amount Y of the solar power generation unit 10 and the predicted power consumption Z of the main operation unit 20 at time t2 to time t3 (sunshine end time) when there is sunshine, The amount of stored electricity X is considered to increase or decrease, and the predicted power generation amount Y of the solar power generation unit 10 becomes zero after the time t3 when the sunshine disappears. Therefore, according to only the predicted power consumption Z of the main operation unit 20 It is considered that the storage amount X decreases.

  In view of the above-described fluctuation prediction of the storage amount X, the control unit 25 displays the display panel 24 based on the storage amount X and the predicted generation amount Y of the solar power generation unit 10 and the predicted power consumption Z of the main operation unit 20. The possible time T (= t4−t2) is calculated, and this is displayed on the display panel unit 24 or the display unit 251 of itself.

  With this configuration, the user can easily display the display panel unit 24 when the solar power generation unit 10 is used as a power supply source without managing the operation state of the solar power generation unit 10 by itself. Therefore, it is possible to appropriately plan a television broadcast viewing schedule. Therefore, in the television broadcast receiving apparatus according to the present invention, the power storage amount of the solar power generation unit 10 and the operable time of the main operation unit 20 (displayable on the display panel unit 24) can be performed without bothering the user. (Time) can be appropriately grasped and managed, and convenience can be improved.

  Note that the control unit 25 uses the photovoltaic power generation unit 10 every day as prediction reference information to be referred to when predicting the predicted power generation amount Y of the solar power generation unit 10 and the predicted power consumption Z of the main operation unit 20. The generated power generation amount, the unit power generation amount obtained by dividing the integrated power generation amount by the daily sunshine time (unit power generation amount per hour of sunshine), the integrated power consumption consumed by the main operation unit 20 in a day, Calculate the unit power consumption (unit power consumption per display hour) divided by the display time of the day, the daily sunshine hours, and at least one of these monthly averages and annual averages. At least one of the previous day data, the monthly table, and the yearly table (see FIGS. 4A, 4B, and 4C) stored in the storage unit 252 is updated.

  In the example of FIG. 4A, the unit power generation amount per hour of sunshine and the unit power consumption per display hour are stored as the previous day data. In the example of FIG. 4B, a monthly average of unit power generation, a monthly average of unit power consumption, and a monthly average of sunshine hours are stored as the monthly table for each month. In the example of FIG. 4C, the accumulated power generation amount, the unit power generation amount, the accumulated power consumption, the unit power consumption, and the sunshine time for each date are stored as an annual table, and each yearly average is stored. Yes. However, the storage contents of the previous day data, the monthly table, and the annual table are not limited to this.

  In addition, with respect to the previous day data, the monthly table, and the annual table, predetermined initial values may be stored when the television broadcast receiving apparatus is shipped from the factory. For example, as the unit power generation and unit power consumption per day, it is only necessary to store the average actual measurement values obtained from multiple manufacturing tests. As the day sunshine hours, the nationwide average sunshine hours are stored. Should be stored.

  FIG. 5 is a flowchart showing an hourly interrupt routine executed by the control unit 25. When this flowchart is started, first, in step S101, it is determined whether or not an hourly interrupt has occurred (for example, whether or not it has become 0 minutes per hour).

  If it is determined that no interrupt has occurred, the flow returns to step S101, and the above determination is repeated. Note that the control unit 25 continuously measures the power generation amount of the solar power generation unit 10, the power consumption of the main operation unit 20, and the sunshine duration until the above-described interruption occurs.

  In particular, the control unit 25 is configured to measure the daily sunshine hours based on the output of the illuminance sensor unit 13 provided in the solar power generation unit 10. With such a configuration, it is possible to accurately measure the sunshine time as compared with the configuration in which the presence or absence of the output of the solar cell 11 is monitored.

  On the other hand, if it is determined in step S101 that an interrupt has occurred, the flow proceeds to step S102. In step S102, it is determined whether or not the current time is a memory update time (for example, midnight). If it is determined that the current time is the memory update time, the flow proceeds to step S104. If it is determined that the current time is not the memory update time, the flow proceeds to step S103.

  If it is determined in step S102 that the current time is not the memory update time, in step S103, the buffer data temporarily stored in the storage unit 252 (daily integrated power generation, daily integrated power consumption, daily Update processing of display time and daily sunshine time is performed. For example, regarding the accumulated power generation amount per day, the power generation amount during the current period (the most recent one hour) is added to the accumulated power generation amount thus far, and this value is temporarily stored as a new accumulated power generation amount. The buffer data update process is performed in the same manner as described above for the accumulated power consumption per day, the display time per day, and the sunshine time per day. When the buffer data update process is completed, the flow returns to step S101, and the above-described interrupt determination process is repeated.

  On the other hand, when it is determined in step S102 that the current time is the memory update time, in the step S104, the previous day data, the monthly data, and the annual table stored in the storage unit 252 are updated. For example, the accumulated power generation per day, the accumulated power consumption per day, and the daily sunshine hours stored temporarily as buffer data are respectively the accumulated power generation of the previous day, the accumulated power consumption of the previous day, and the previous day. Is stored in an annual table as sunshine hours. In addition, the value obtained by dividing the total daily generated power by the day's sunshine hours and the value obtained by dividing the daily accumulated power by the daily display time are the unit power generation of the previous day and the previous day, respectively. The unit power consumption is stored in the previous day data and the annual table. The monthly average and annual average of each of the integrated power generation amount, unit power generation amount, integrated power consumption, unit power consumption, and sunshine duration are also calculated every day in step S104, and the monthly table and annual table are updated.

  When the update process for the previous day data, the monthly table, and the annual table in step S104 is completed, the buffer data is initialized in step S105, and then the flow returns to step S101.

  As described above, in this flowchart, the buffer data update process (step S103) is performed at 0 hour every hour, and the previous day data, the monthly table, and the annual table are updated at the end of the day (the next day 0:00). Processing (step S104) is performed.

  And the control part 25, when predicting the prediction electric power generation amount of the solar power generation part 10, and the prediction power consumption of the main operation part 20, the previous day data, the monthly table, and the year stored in its own storage part 252 At least one of the tables is referred to as prediction criterion information. For example, the predicted power generation amount Y shown in FIG. 3 is calculated by multiplying the unit power generation amount per hour of sunshine (or its monthly average or annual average) by the sunshine time, and the predicted power consumption Z is displayed for 1 hour. It is calculated by multiplying the unit power consumption per unit (or its monthly average or annual average) by the display time of the display panel unit 24. In addition, when making a display reservation for a program, it is also possible to refer to the unit power generation amount and unit power consumption (or the moving average for several days before and after the same day of the previous year) stored in the annual table. It is valid. With such a configuration, it is possible to appropriately predict the predicted power generation amount Y of the solar power generation unit 10 and the predicted power consumption Z of the main operation unit 20 while reflecting changes in seasons, etc., so that the display panel unit Thus, the 24 displayable times T can be calculated correctly.

  The control unit 25 may be configured to display a warning message to that effect on the display panel unit 24 or its own display unit 251 when the amount of power stored in the solar power generation unit 10 falls below a predetermined value. By adopting such a configuration, the user can reduce the amount of power stored in the solar power generation unit 10 to a level lower than zero (more precisely, the level at which the main operation unit 20 becomes inoperable). It becomes possible to recognize that the amount of electricity stored in 10 has decreased.

  Further, the control unit 25 controls the power supply switching unit 27 when the amount of power stored in the solar power generation unit 10 falls below a predetermined value, so that the power supply source to the main operation unit 20 is supplied from the solar power generation unit 10 to the power. It is good to make it the structure switched to the conversion part 26 (by extension commercial AC power supply 30). With such a configuration, it is possible to prevent a situation in which display or recording of television broadcasting is interrupted due to power shortage.

  In addition, the control unit 25 includes a reservation function unit 253 that performs program display reservation and video recording reservation. When accepting a user's reservation operation, the power storage amount and the predicted power generation amount of the solar power generation unit 10 and the main operation unit Based on the predicted power consumption of 20, the reservation target program is determined to be available for reservation, and the determination result is displayed on the display panel unit 24 or its own display unit 251.

  6A is a diagram illustrating a display example when reservation is possible, and FIG. 6B is a diagram illustrating a display example when reservation is impossible. As shown in FIG. 6A and FIG. 6B, the television broadcast receiving apparatus according to the present invention reads the program organization information included in the television broadcast signal, displays the program guide on the display panel unit 24, and then reserves the user. It is configured to accept operations.

  In the example of FIG. 6A, since the amount of electricity stored in the solar power generation unit 10 has a margin, even when this is used as the power supply source of the main operation unit 20, the program A and the program C (30 minutes each) with a short broadcast time In regard to, it is determined that each display reservation (or recording reservation) can be made, and in order to show the fact to the user, the display areas of the programs A and C are each subjected to hatching processing. . On the other hand, it is determined that display reservation (or recording reservation) is not possible for program B (2 hours) having a long broadcast time, and the above-described hatching processing is applied to the display area of program B. Absent. On the other hand, in the example of FIG. 6B, when there is no margin in the amount of power stored in the solar power generation unit 10 and this is used as the power supply source of the main operation unit 20, each program A to C is displayed. It is determined that reservation (or recording reservation) is impossible, and none of the display areas of the programs A to C is subjected to the above hatching process. With this configuration, the user can grasp at a glance whether or not a reservation operation for a desired program is possible when making a program display reservation (or recording reservation).

  In the example of FIG. 6B, the control unit 25 may change the power supply source to the main operation unit 20 from the solar power generation unit 10 to the power conversion unit 26 (and thus the commercial AC power supply 30). A predetermined confirmation message is displayed on the display panel unit 24 in order to ask the user whether or not. With such a configuration, the user can perform a power supply source switching operation on his / her own intention and continue program display reservation (or recording reservation).

  In FIG. 6A and FIG. 6B, the configuration for performing the reservation operation for the current day has been described as an example. However, even when the reservation operation for a plurality of days is performed, the same reservation availability determination as described above is performed. Done. For example, if the control unit 25 determines that all display reservations (or recording reservations) can be made for the programs for the same day broadcast, the control unit 25 performs the same reservation determination as described above for the programs for the next day broadcast and later. Whether the program can be displayed is displayed on the display panel unit 24 or its own display unit 251. With this configuration, the user can grasp at a glance whether or not a desired program reservation operation is possible when performing a reservation operation for a plurality of days.

  Moreover, in the example of FIG. 6A and FIG. 6B, the control unit 25 predicts reference standard information (previous day data, monthly table) that is referred to when predicting the predicted power generation amount of the solar power generation unit 10 and the predicted power consumption of the main operation unit 20. In addition, the selection item of the prediction method is displayed on the display panel unit 24 so that the user can select the yearly table). By adopting such a configuration, the user can perform the selection operation of the prediction reference information by his / her own intention, and perform appropriate reservation availability determination.

  In addition, when making a recording reservation for a program, it is not always necessary to drive the display panel unit 24. Therefore, the control unit 25 confirms with the user whether screen display during recording operation is necessary. It is desirable that the confirmation result be reflected in the determination of whether or not the recording reservation is possible.

  Next, the power saving control of the display panel unit 24 by the control unit 25 will be described in detail.

  FIG. 7 is a diagram for explaining enlargement / reduction processing of the screen display range. As shown in FIG. 7, the control unit 25 is configured to enlarge / reduce the screen display range of the display panel unit 24 based on the information amount of the video signal displayed on the screen of the display panel unit 24. For example, when only 1-segment broadcasting is received, the amount of information to be handled is small, so that the power consumption of the entire system can be reduced by reducing the screen display range of the display panel unit 24.

  Further, the control unit 25 is configured to perform luminance control of the display panel unit 24 according to ambient brightness and line of sight based on the output of the luminance sensor unit 28 provided in the vicinity of the display panel unit 24. For example, when it is determined that the periphery of the display panel unit 24 is dark, the power consumption of the entire system can be reduced by reducing the luminance within a range that does not impair the visibility of the display panel unit 24.

  As described above, in the television broadcast receiving apparatus according to the present invention, the power storage amount of the solar power generation unit 10 and the operable time of the main operation unit 20 (the display panel unit 24) can be determined without bothering the user. It is possible to appropriately grasp and manage the displayable time and the recordable time of the storage unit 252 and to voluntarily execute the power saving control of the display panel unit 24, thereby improving convenience. Become.

  The configuration of the present invention can be variously modified in addition to the above-described embodiment without departing from the gist of the invention.

  The present invention is a useful technique for improving the convenience of a television broadcast receiving apparatus provided with a photovoltaic power generation unit as a power supply source to the main operation unit.

These are the schematic external views of the television broadcast receiver which concerns on this invention. These are the block diagrams of the television broadcast receiver which concerns on this invention. These are figures which show the calculation method of displayable time. These are figures which show an example of the previous day data. These are figures which show an example of a monthly table. These are figures which show an example of an annual table. It is a flowchart which shows the interruption routine of an hour unit. It is a figure which shows the example of a display when a reservation is possible. It is a figure which shows the example of a display when a reservation is impossible. It is a figure for demonstrating the expansion / reduction | reduction process of a screen display range. It is a block diagram which shows one example of a conventional television broadcast receiver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Solar power generation part 11 Solar cell 12 Electric power storage device 13 Illuminance sensor part 20 Main operation | movement part 20A Controller unit 20B Display unit 21 Antenna part 22 Tuner part 23 Demodulator part 24 Display panel part 25 Control part 251 Display part 252 Storage part 253 Reservation function Unit 254 operation unit 255 communication unit 256 GPS reception unit 26 power conversion unit 27 power source switching unit 28 luminance sensor unit 30 commercial AC power source 40 remote terminal 50 GPS satellite

Claims (13)

A television broadcast receiver comprising: a photovoltaic unit that converts light energy into electrical energy and stores it; and a main operating unit that operates by receiving power from the photovoltaic unit,
The main operating part is:
An antenna for receiving television broadcast signals;
A tuner for selecting a desired program signal from the television broadcast signal;
A demodulator for decoding the program signal into a video signal;
A display panel for displaying a screen based on the video signal;
Based on the power storage amount and the predicted power generation amount of the photovoltaic power generation unit and the predicted power consumption of the main operation unit, the displayable time of the display panel unit is calculated and displayed on the display panel unit or its own display unit. A control unit;
A television broadcast receiver characterized by comprising:   The control unit is consumed daily by the photovoltaic power generation unit, the unit power generation amount obtained by dividing the total power generation amount by the sunshine time of the day, and the main operation unit consumed by the day. Calculate the accumulated power consumption, unit power consumed by dividing the accumulated power by the display time of the day, the daylight hours of the day, and at least one of these monthly averages and annual averages and store them in its own storage unit. The television broadcast receiving apparatus according to claim 1, wherein at least one of the previous day data, the monthly table, and the annual table is updated.   The control unit predicts at least one of the previous day data, the monthly table, and the yearly table stored in its storage unit when predicting the predicted power generation amount of the photovoltaic unit and the predicted power consumption of the main operation unit. The television broadcast receiving apparatus according to claim 2, wherein reference is made as prediction standard information.   The television broadcast receiver according to claim 3, wherein the control unit measures a sunshine duration of a day based on an output of an illuminance sensor unit provided in the photovoltaic power generation unit.   The control unit includes a reservation function unit that performs at least one of program display reservation and recording reservation, and when receiving a reservation operation of a user, the power storage amount and the predicted power generation amount of the photovoltaic unit and the main operation unit 5. The television broadcast receiver according to claim 4, wherein whether or not a reservation target program is reserved is determined based on the predicted power consumption, and the determination result is displayed on the display panel unit or its own display unit. .   The television broadcast receiving apparatus according to claim 5, wherein the control unit receives a selection operation of the prediction criterion information when the reservation possibility determination is performed.   The said control part has at least one of the operation part which receives a user's direct operation, and the communication part which receives a user's remote operation, The one of Claims 1-6 characterized by the above-mentioned. Television broadcast receiver.   The said control part displays the warning message to that effect on the said display panel part or own display part, when the electrical storage amount of the said photovoltaic part falls below predetermined value, The said display part or its display part is characterized by the above-mentioned. The television broadcast receiver according to any one of claims 7 to 9. The main operation unit includes a power conversion unit that converts commercial AC power into DC power, and a power supply switching unit that selects one of the photovoltaic unit and the power conversion unit as a power supply source to the main operation unit; Comprising
The control unit controls the power supply switching unit when the amount of electricity stored in the photovoltaic unit falls below a predetermined value, and supplies a power supply source to the main operation unit from the photovoltaic unit to the power conversion unit. The television broadcast receiver according to claim 1, wherein the television broadcast receiver is switched.   10. The television broadcast receiver according to claim 1, wherein the control unit performs time setting based on GPS [Global Positioning System] information.   The television broadcast reception according to claim 1, wherein the control unit expands / reduces a screen display range of the display panel unit based on an information amount of the video signal. apparatus.   The television broadcast receiver according to claim 1, wherein the display panel unit is an LED [Light Emitting Diode] display panel.   The said control part performs the brightness control of the said display panel part based on the output of the brightness | luminance sensor part provided in the vicinity of the said display panel part, The Claim 1 characterized by the above-mentioned. TV broadcast receiver.

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