JP2013053785A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner with operability improved for obtaining an electricity rate of the air conditioner.SOLUTION: The invention includes an indoor unit 1 and a remote control device 2 for operating the indoor unit 1. The remote control device 2 includes a display means for displaying an electricity rate of the operation of the indoor unit. In the remote control device, it is possible to set both a unit price of the electricity rate every time zone and a unit price of the electricity rate regardless of time zone, so that the electricity rate can be accurately calculated according to an electricity rate scheme in an agreement made by the user.

Description

  The present invention relates to an air conditioner having a function of notifying a user of consumed electricity charges.

  In recent years, it has become necessary to reduce the power consumption of home appliances to maintain and improve the global environment, and there is a growing trend for users to request more detailed information regarding electricity charges as a measure of the power consumption of air conditioners. Yes.

  In addition, in consideration of the universal design that is increasing in recent years, a display form in which necessary information can be easily understood is required.

  Conventionally, also in the field of air conditioners, there has been proposed an air conditioner that automatically calculates and displays an electricity bill corresponding to electric power related to operation (for example, see Patent Document 1). In Patent Document 1, it is possible to input a daytime unit power rate and a midnight unit power rate, calculate an electricity rate based on the input unit power rate, and calculate the total rate up to the previous month, The charge and current charge are displayed on the display at a time.

JP 2001-355891 A

  However, in the configuration as in Patent Document 1, it is necessary to always set the electricity rate for each time zone. If the daytime electricity rate unit price and the midnight electricity rate unit rate are the same, is the midnight electricity rate unit price entered? Or, it is necessary to input a unit price that is the same as the unit price of the electricity charge during the daytime, and the operation is complicated for the user.

  This invention solves the said conventional subject, and it aims at providing the air conditioner which improved the operativity for acquiring the electric bill of an air conditioner.

  In order to solve the above-described conventional problems, the present invention includes an indoor unit and a remote control device that operates the indoor unit, and the remote control device includes a display unit that displays an electricity rate according to the operation of the indoor unit. Since the unit can set both the unit price of electricity charges for each time zone and the unit price of electricity charges regardless of the time zone, it can accurately generate electricity based on the electricity rate system with which the user has a contract. Charges can be calculated.

  ADVANTAGE OF THE INVENTION This invention can provide the air conditioner which improved the operativity for acquiring the electric bill of an air conditioner.

The block diagram of the air conditioner in Embodiment 1 of this invention Transition diagram of display unit of unit price setting by time zone in the first embodiment Transition diagram of display unit of unit price setting by time zone in the first embodiment The flowchart concerning the unit price setting according to time zone in the first embodiment Flowchart for displaying electricity charges in the first embodiment Schematic diagram of a display unit for displaying electricity charges in the first embodiment Schematic diagram of the display unit in the first embodiment Display contents on the display unit in the first embodiment Schematic diagram of the display unit for setting electricity unit price in other embodiments

  The first invention comprises an indoor unit and a remote control device for operating the indoor unit, and the remote control device has a display means for displaying an electric charge required for the operation of the indoor unit. Since it is possible to set both the unit price of electricity charges and the unit price of electricity charges regardless of the time of day, it is possible to calculate the electricity charges accurately based on the electricity charge system with which the user has a contract. it can.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, the remote control device has date / time information, and when the date / time information is not set, only the unit price of the electric charge can be set regardless of the time zone. Convenience can be improved.

  In a third aspect of the invention, particularly in the first or second aspect of the invention, the remote control device has date / time information, and when the date / time information is set, it is possible to set the unit price of the electricity rate for each time zone. By transmitting the date / time information together with the unit price of the electricity bill for each time zone to the unit, the date / time information of the indoor unit and the date / time information of the remote control device can be easily matched.

  According to a fourth aspect of the present invention, particularly in the first to third aspects of the present invention, the display unit includes an electric charge display instruction means for displaying an electric charge for driving the indoor unit, and the display form of the electric charge has a plurality of display forms. At the same time, by operating the electricity rate display instruction means, the names of the plurality of display forms are displayed and selected one after another on the display means, and the electricity charges of the names of the selected display forms are displayed on the display means. Thus, it is possible to display a plurality of electricity rate systems with a simple operation.

  According to a fifth aspect of the invention, in the fourth aspect of the invention, the electric charge is displayed on the display means after a predetermined fixed time elapses after one of the names of the plurality of display forms is selected by the electric charge display instruction means. Thus, a margin can be provided for the user's selection time, and the user can select a name of a desired display form with a margin.

  In the sixth aspect of the invention, in particular, in the fifth aspect, when the electricity rate display instruction unit is operated again before the predetermined fixed time has elapsed, the electricity rate is displayed on the display unit without causing the display unit to display the electricity rate. Even if the user accidentally selects a name with a different display form by changing the name representing one of the multiple display forms, the operation is performed again until a predetermined fixed time has elapsed. By doing so, it is possible to select an accurate display form name.

  In the seventh invention, particularly in the fourth to sixth inventions, after displaying the electricity charge of the selected display form, the name of the selected display form and the electricity charge are alternately displayed on the display means. By doing so, the user's understanding can be enhanced.

  In an eighth aspect of the invention, in particular, in the fourth to seventh aspects of the invention, the electricity rate of the selected display form is displayed, and after the predetermined display elapsed time has elapsed, the electricity rate display instruction means is displayed before operating. By returning, it is possible to prevent the user from being confused when operating the air conditioner next time.

  In the ninth invention, particularly in the fourth to eighth inventions, the plurality of display forms include at least the current electricity bill, the current month electricity bill, and the previous month electricity bill, so that the user can obtain a plurality of information items. You can choose from.

  In the tenth aspect of the invention, particularly in the fourth to ninth aspects of the invention, when the operation of the indoor unit is stopped, the electric charge during the previous operation is displayed instead of the electric charge during the current operation. By separating the operation from the stoppage, the user can understand it sensuously.

  In an eleventh aspect of the invention, particularly in the ninth or tenth aspect of the invention, when the indoor unit has date / time information and the remote control device does not have date / time information, or the indoor unit does not have date / time information, When the computer has date and time information, it is possible to improve the usability by configuring the display means to display only the electricity bill currently in operation.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram showing an indoor unit and a remote control device of an air conditioner according to Embodiment 1 of the present invention. In addition, the air conditioner in this Embodiment is comprised by connecting the indoor unit 1 installed indoors and the outdoor unit (not shown) installed outdoor by refrigerant | coolant piping.

  First, the indoor unit 1 receives data from the remote control device 2 and transmits / receives data to the remote control device 2, an indoor side transmission / reception unit 10, a main body timekeeping unit 11 that stores date and time data, and an air conditioner A power measurement unit 13 that measures power consumption, a control unit 12 that controls the indoor unit 1, and a storage unit 14 that stores a unit price of electricity charges, settings, and the like are provided.

  Next, the remote control device 2 transmits data to the indoor unit 1 and receives data from the indoor unit 1, a remote control side transmitting / receiving unit 20, a display unit 21 that is a display means for displaying various operation information, a time zone Electricity rate unit setting unit 22 that displays the electricity rate unit price for each unit, and electricity rate display instruction unit 23 that is an electricity rate display instruction unit for instructing display unit 21 to display the electricity rate, and performs setting and operation instructions. An operation unit 24 is provided.

  Note that the configurations of the indoor unit 1 and the remote control device 2 are not limited to the components shown in FIG. The electricity bill unit price setting unit 22 and the electricity bill display instruction unit 23 are part of the operation unit 24.

  First, the user performs initial setting after inserting a battery into the remote control device 2. At this time, the information set by the user is date information (year / month / day) and time information. Then, after the user sets the date / time information of the remote control device 2, the date / time information having date information and time information is transmitted to the indoor unit 1. On the other hand, in the indoor unit 1, the date / time information is received by the indoor side transmission / reception unit 10 and stored in the main body timing unit 11. Thereby, the setting of the time information between the remote control device 2 and the indoor unit 1 is completed.

  Next, the setting of the electricity rate unit price by time zone will be described. In recent years, there is also an electricity charge system in which the unit price of the electricity charge varies depending on the time zone. Therefore, in the air conditioner according to the present embodiment, the unit price of the electric charge can be set in the present embodiment so that the electric charge system in which the unit price of the electric charge varies depending on the time zone as much as possible. ing.

First, the user operates the operation unit 24 of the remote control device 2 to display the display unit 21 on the setting screen so that the unit price can be set for each time zone. For example, step 2 in FIG.
As shown in FIG. 1, the display unit 21 displays “unit price setting by time zone”. The display is not limited to this, and there is no problem even if the display is “all electrification setting”, for example.

  Next, in step 22, it is determined whether or not to set the unit price by time zone. “None” is selected when the hourly unit price setting is not performed, and “Yes” is selected when the hourly unit price setting is performed.

  First, a description will be given of a case where “None” is selected as the unit price setting for each hour. FIG. 2 is a diagram for explaining a setting method when the electricity rate unit price setting for each time zone is “none”.

  If “None” is selected in step 22, a unit price is set for each 1 kwh regardless of time in step 23. The unit price of electricity charges per 1kWh can be selected from 1 yen to 50 yen. In step 24, the user himself / herself sets the unit price of the electricity charge based on the electricity charge system of the power company with which the user is contracted. Can be set.

  In this case, the user himself / herself needs to enter an average electric power unit price. However, for example, if the air conditioner is actually operated by setting it slightly higher, the electric charge will be slightly higher. Since the display is made, the user's own energy saving awareness can be raised and the user himself / herself can refrain from using power.

  In step 24, the unit price of electricity charges for every 1 kwh can be selected in order, and when it reaches the upper limit amount, that is, 50 yen, it can be selected by returning to the lower limit amount, that is, 1 yen. In the present embodiment, the setting can be made between 1 and 50 yen, but the present invention is not limited to this.

  Moreover, since it may be bothersome to set the electricity unit price setting depending on the user, the electricity price based on the initial value is set by setting the initial value (for example, 22 yen) of the electricity price unit setting in advance. Can be displayed. This initial value is set in advance by the manufacturer, but is not limited to 22 yen. For example, an average unit price for each electric power company or a unit price with the largest number of contractors is input. It can be considered.

  Next, a description will be given of a case where “Yes” is selected as the electricity rate unit price setting for each time zone. FIG. 3 is a diagram for explaining a setting method in the case where there is an “electricity unit price setting” for each time zone. In the present embodiment, three types of settings are possible: “morning / night unit price”, “day unit price”, and “midnight unit price”.

  First, when “Yes” is selected in Step 22 of FIG. 2, “Morning / night unit price” is set in Step 33, and in Step 34, it can be selected from 1 to 50 yen. When “morning / night unit price” is set, “day unit price” and “midnight unit price” can be set in steps 35 to 38. Both can be selected from 1 to 50 yen.

  In this embodiment, the initial unit price displayed first when “Morning / night unit price” is set is “22 yen”, and the user sets the final unit price by moving the unit up or down from this unit price. The initial unit price of “daytime unit price” is “33 yen”, and the initial unit price of “late night unit price” is “9 yen”. At the time of setting, these initial unit prices are displayed first.

In general, the electricity billing system varies depending on the power company, so the unit price for each time zone also differs for each power company. However, the average unit price of each power company and the unit price close to it for the initial unit price Pre-set every time, "Morning / night unit price (7-10am, 17: 00-23: 00)"
When setting the unit price for a plurality of time zones of “day unit price (10:00 to 17:00)” and “midnight unit price (23:00 to next 7:00)”, the user first displays the initial unit price set in advance. Since the unit price is set up and down from the initial unit price, it can be set easily.

  In this embodiment, it is configured to be selectable from three types of “morning / night unit price”, “daytime unit price”, and “midnight unit price”. However, the present invention is not limited to this. For example, “morning unit price” “day unit price” Four types of “night unit price” and “midnight unit price” may be used, or other cases may be used.

  By configuring as described above, it is possible to set a unit price of electricity charges based on a contract with a user's electric power company for each time zone, and to obtain a more accurate electricity charge.

  Hereinafter, the electricity unit price setting will be described using a flowchart. FIG. 4 is a flowchart according to the unit price setting for electricity charges.

  First, by operating the operation unit 24 in step 41, the unit price setting by time zone can be set. In step 42, “Yes” or “No” is selected as the unit price setting for each time zone.

  If “Yes” is selected for the time zone unit price setting in step 43, the process proceeds to step 44, and if “No” is selected for the time zone unit price setting, the process proceeds to step 44-5. In Step 44, it is confirmed whether or not time information is set in the remote control device 2. If the time information is set, the process proceeds to Step 44-1, and if the time information is not set, the process proceeds to Step 44-4. move on.

  In step 44-1, information indicating that the unit price setting for each time zone is “present” and the time information are transmitted to the indoor unit 1, and the setting of the indoor unit 1 is matched with the remote control device 2. As a result, the contents of the unit price setting for each time zone and the time information are set in the indoor unit 1.

  In step 44-2, the unit price of the electricity charge for each time zone is set, and in step 44-3, the unit price of the electricity charge for each time zone is transmitted to the indoor unit 1. Thereby, the unit price of the electricity bill for each time zone is set in the indoor unit 1. In step 45, the setting is completed.

  If the process proceeds to step 44-4, the remote controller 2 has not been set for the date and time, so a warning is given to set the date and time. For example, it is conceivable to warn the user by displaying a message enlightening the user to set the date and time, or by blinking the date and time portion.

  When the process proceeds to step 44-5, information indicating that the unit price setting for each time zone is “none” is transmitted to the indoor unit 1 and is set in the indoor unit 1, and the process proceeds to step 44-6.

  In step 44-6, the unit price of the electricity charge regardless of the time zone is set, and in step 44-7, the unit price of the electricity charge is transmitted to the indoor unit 1. As a result, the unit price of the electricity charge regardless of the time zone is set in the indoor unit 1.

  Next, the electricity rate display will be described. FIG. 5 is a flowchart relating to the electricity bill display, and FIG. 6 is a schematic diagram of a display unit relating to the electricity bill display. Note that the electricity charge in this embodiment has a plurality of display forms. In this embodiment, the electricity charge during operation, the electricity charge during the previous operation, the electricity charge for the current month, and the electricity charge for the previous month are provided. However, the present invention is not limited to this.

First, an electric charge switch (hereinafter referred to as an electricity bill display instruction unit 23) constituting a part of the operation unit 24 provided in the remote control device 2 on the normal display screen (state 1 in FIG. 6) of the remote control during operation or stoppage. , Electricity bill SW) is pressed (step 51).

  When the electricity bill SW is pressed, display mode 1 (for example, “electricity cost”) which is one of a plurality of display modes is displayed on the display unit 21 in step 52 (state 2 in FIG. 6). This means the electricity charge for the current operation if it is in operation, and the electricity charge for the previous operation if the operation is stopped.

  In step 52-1, it is determined whether or not the pressed state of the electricity bill SW has been released. If the pressed state of the electricity bill SW is released, the process proceeds to step 52-2, and if not released, that is, if it is determined that the user has long pressed the electricity bill SW, the process proceeds to step 53.

  In step 52-2, it is determined again whether the electricity bill SW has been pressed. In this case, there are a case where the electricity cost SW is pressed and selected, and a case where the electricity cost SW is pressed a plurality of times to select, so that the desired electricity cost can be displayed in any manner. . In step 52-2, if the electricity cost SW is pressed, the process proceeds to step 53. If the electricity cost SW is not pressed, the process proceeds to step 52-3.

  In step 52-3, it is determined whether or not the state where the pressing state of the electricity bill SW is released continues for a predetermined fixed time (for example, 1 second). If it is determined in step 52-3 that the predetermined fixed time has not been continued, the process returns to step 52-2, and if the predetermined fixed time has been continued, the process proceeds to step 52-4. In this way, even if the user is pressing the electricity bill SW while thinking about what to display, a certain amount of margin can be provided by providing a predetermined fixed time, and the electricity that the user does not want It is possible to prevent the fee from being fixed.

  In step 52-4, the selection of display mode 1 is confirmed, and the process proceeds to step 52-5. When the selection of the display form 1 is confirmed, information indicating that the display form 1 is selected is transmitted from the remote control device 2 to the indoor unit 1, and the power consumption measured by the power measuring unit 13 in the control unit 12 of the indoor unit 1, The electricity charge is calculated from the unit price of the electricity charge stored in the storage unit and the time measured by the main body time measuring part 11, and the information on the electricity charge is transmitted from the indoor unit 1 to the remote control device 2.

  If the unit price for each time zone is set at this time, the electricity rate is calculated from the power consumption for each time zone, the unit price for the electricity rate for each time zone, and the operating hours for each time zone, and the unit price for each time zone is set. If not, the electricity rate is calculated from the unit price of the set electricity rate, the power consumption, and the operation time.

  In step 52-5, the name of display mode 1 (here, “electricity cost”) is displayed, a predetermined name display time (for example, 2 seconds) is displayed, and the process proceeds to step 52-6. In step 52-6, a predetermined price display time (for example, 2 seconds) is displayed for the electricity bill (for example, 35 yen) corresponding to the display mode 1, and the process proceeds to step 52-7.

  In step 52-7, it is determined whether or not a predetermined display elapsed time (for example, 12 seconds) has elapsed. If it has not elapsed, the process returns to step 52-5. Is terminated (state 1 in FIG. 6).

  As described above, during the predetermined display elapsed time, the name of the display form 1 and the electricity charge corresponding to the name of the display form 1 are alternately displayed (state 5 in FIG. 6), so that the user can understand more. Can deepen. In addition, the value of the above-mentioned fixed time, name display time, amount display time, and display elapsed time is not limited to this embodiment.

  Next, when proceeding to step 53, display form 2 (for example, “this month electricity bill”) which is one of a plurality of display forms is displayed on the display unit 21 (state 3 in FIG. 6). Steps 53-1 to 53-7 operate in the same manner as Steps 52-1 to 52-7. Note that this month's electricity bill is an electricity charge for the accumulated power consumption from the beginning of the month to the present.

  Next, when proceeding to step 54, display form 3 (for example, “previous month electricity bill”) which is one of a plurality of display forms is displayed on the display unit 21 (state 4 in FIG. 6). Steps 551 to 54-7 operate in the same manner as steps 52-1 to 52-7. The previous month's electricity bill is an electricity charge for the accumulated power consumption from the first day to the last day of the previous month.

  And when the pressing state of the electricity bill SW is continued from step 551, or when the electricity bill SW is pressed again at step 552, the display form of the electricity charge displayed on the display unit 21 is the first. The display mode is returned to the display mode 1 and thereafter displayed in order.

  As described above, when the user displays the electricity price, the name of the display form of the electricity charge to be displayed on the display unit 21 is selected, and then confirmed to display the electricity charge corresponding to the selected display form. It can be displayed on the unit 21.

  In this embodiment, when display mode 1 (“electricity cost”) is selected, if it is selected during operation, it is set as the electricity charge during the operation, and if it is selected when operation is stopped, the previous operation For example, as shown in FIG. 7, when display mode 1 is selected during operation, display mode 1a (for example, “current electricity bill”) is displayed as in state A, and the operation is stopped. When the hour display mode 1 is selected, the display mode 1b (for example, “previous electricity bill”) may be displayed as in the state B.

  That is, a user's understanding can be deepened more by changing the name of a display form according to the driving | running state of an air conditioner.

  In this embodiment, the current or previous electricity bill, this month electricity bill, and the previous month electricity bill are displayed in this order. Of course, the order can be switched, and items to be displayed are limited to this. For example, items such as CO2 emissions can be included. In this case, it is possible to calculate the CO2 emission amount based on the standard CO2 emission amount for each power consumption.

  Next, display when the setting of the indoor unit 1 and the setting of the remote control device 2 are different will be described. As described above, the date / time information of the indoor unit 1 and the remote control device 2 is set, but the date / time information of the indoor unit 1 and the remote control device 2 may not be set for some reason. If the electricity bill SW is pressed in such a state, the correct charge may not be displayed.

  Therefore, in this embodiment, after transmitting a request for displaying the electricity rate from the remote control device 2 to the indoor unit 1, it is checked whether the settings are the same between the indoor unit 1 and the remote control device 2, and only when the settings are the same, the remote control device Electricity charges are displayed on the display unit 21 of No. 2. FIG. 8 is a diagram summarizing display contents for each setting content.

  First, in the case of the current electricity charge or the previous electricity charge, if the time information of the indoor unit 1 and the remote control device 2 is “Yes” and the content of the unit price setting for each time zone is the same, the normal charge Display is possible.

Furthermore, in the case of the current electricity charge or the previous electricity charge, date information is unnecessary because of the power consumption required for one operation regardless of the date and time, and the elapsed time from the start of operation is measured in the indoor unit 1. .

  Therefore, even when the time information of the indoor unit 1 and the remote control device 2 are different, the unit price setting for each time zone of the indoor unit 1 and the remote control device 2 is “none” by pressing the electricity bill SW. In the case of, the electricity price is displayed. This improves the usability of the user.

  On the other hand, in the case of the electricity bill for this month or the previous month, date information is essential. For this reason, only when the settings of the indoor unit 1 and the remote controller 2 are the same, the electricity rate is displayed, and otherwise the electricity rate is not displayed. By doing in this way, it can avoid giving a misunderstanding to a user.

  Since the indoor unit 1 calculates the electricity charge, the electricity charge can be calculated when the indoor unit 1 has date / time information. However, if the date and time information is not set in the remote control device 2 and the electric charge is displayed on the remote control device 2, the user may be confused. Therefore, in the present embodiment, only when the settings of the indoor unit 1 and the remote control device 2 are the same and when the unit price setting for each time zone is “None” and the current or previous electricity charge is displayed, To improve user usability.

  Further, in the present embodiment, “morning / night unit price (7 to 10 o'clock, 17 o'clock to 23 o'clock)” “daytime unit price (10 o'clock to 17 o'clock)” “midnight unit price (from 23 o'clock to 7 o'clock the next day)” Although the unit price of the electricity bill can be set, in such a configuration, only a preset time zone can be set.

  Therefore, as another embodiment, in addition to setting the unit price of electricity charges in a plurality of preset time zones, the unit price of electricity charges can be set by dividing it into the user's preferred time zone. Also good. In this case, the user can set the unit price of the electric charge with a higher degree of freedom by setting the start and end of the time period with the remote control device 2 and setting the unit price of the electric charge applied in that time period.

  Further, as another embodiment, it may be configured such that the charge system of the electric power company can be set. In that case, a storage area in which the charge system of the electric power company is stored in the remote control device 2 in advance. For example, the remote control device 2 is provided with “XX power XX plan”, “XX power △△ plan”, “△△ power △△ plan”, “XX power XX plan”, etc., and the user contracts himself / herself. It is possible to set unit prices for electricity charges simply by selecting the plan of the power company.

  FIG. 9 is a diagram schematically showing a mode for selecting a charge system for each electric power company. As shown in FIG. 9, first, the operation unit 24 is operated to set the power company selection mode. As shown in FIG. 9, first, a power company with which the user has a contract is selected, and then the name of the charge system provided by the selected power company is selected.

  By configuring in such a manner as to be settable, it is possible to display the electricity rate more accurately.

  As described above, the invention of the present embodiment is configured so that electricity charges can be presented in various forms, and one can be selected from a plurality of electricity charges by a simple method. A remote control device with high usability can be realized.

  As described above, the present invention can be applied to a remote control device that operates an air conditioner.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Remote control apparatus 10 Indoor side transmission / reception part 11 Main body timekeeping part 12 Control part 13 Electric power measurement part 14 Storage part 20 Remote control side transmission / reception part 21 Display part 22 Electricity charge unit price setting part 23 Electricity charge display instruction | indication part 24 Operation part

Claims (11)

An indoor unit and a remote control device for operating the indoor unit, wherein the remote control device has a display means for displaying an electricity charge required by the operation of the indoor unit, An air conditioner characterized in that it can both set the unit price of electricity and set the unit price of electricity charges regardless of the time zone. The air conditioner according to claim 1, wherein the remote control device has date information, and when the date information is not set, only the unit price of the electric charge can be set regardless of a time zone. The remote control device has date and time information, and when the date and time information is set, it is possible to set the unit price of the electricity charge for each time zone and transmit the unit price of the electricity rate for each time zone to the indoor unit The air conditioner according to claim 1 or 2, wherein the date and time information is transmitted together. The display unit includes an electricity charge display instruction means for displaying an electricity charge, and the display form of the electricity charge has a plurality of display forms, and the plurality of display forms are operated by operating the electricity charge display instruction means. The name is displayed on the display means one by one in order and selected, and the electricity price of the name of the selected display form is displayed on the display means. The air conditioner described. 5. The electricity price is displayed on the display unit after a predetermined fixed time has elapsed after selecting one of the names of the plurality of display forms by the electricity rate display instruction unit. Air conditioner. If the electricity rate display instruction unit is operated again before the predetermined fixed time has elapsed, the display unit does not display the electricity rate, and one of the display forms displayed on the display unit is displayed. The air conditioner according to claim 5, wherein a name representing one is changed. 7. After displaying the electricity price of the selected display form, the name of the selected display form and the electricity charge are alternately displayed on the display means. The air conditioner described in the paragraph. 8. The electricity charge in the selected display form is displayed, and after a predetermined display elapsed time has elapsed, the display before operating the electricity charge display instructing means is returned to any one of claims 4 to 7. The air conditioner described in the paragraph. The air conditioner according to any one of claims 4 to 8, wherein the plurality of display forms include at least a current electricity bill, a current month electricity bill, and a previous month electricity bill. 10. The air conditioner according to claim 9, wherein when the operation of the indoor unit is stopped, the electricity cost during the previous operation is displayed instead of the electricity cost during the current operation. When the indoor unit has date information and the remote control device does not have date information, or when the indoor unit does not have date information and the remote control device has date information, The air conditioner according to claim 9 or 10, wherein the display means is configured to be able to display only the electricity bill currently in operation.