JP5618794B2 - Car air conditioner switch device - Google Patents

Description

  The present invention relates to a switch device for a car air conditioner.

  2. Description of the Related Art Conventionally, an automobile is provided with an air conditioner that adjusts the air in the passenger compartment in order to make the environment during riding comfortable. A car air conditioner, for example, air-conditions a vehicle interior to an environment set arbitrarily through operation of a switch as shown in Non-Patent Document 1.

Published by Toyota Motor Corporation, "ALLION Instruction Manual", April 26, 2010, first edition, page 191

  By the way, in the switch device of the car air conditioner disclosed in Non-Patent Document 1, the air conditioning temperature can be set through the operation of the set temperature adjustment switch. The set temperature can be confirmed by an indicator. However, the air conditioner air-conditions the vehicle interior so as to approach the set temperature, and does not discharge air at the set temperature. For this reason, when the user tries to increase or decrease the room temperature, there is a concern that it is difficult to determine how many times the set temperature should be set. For example, when the set temperature is set to the same 25 ° C., the temperature of air discharged from the air conditioner is lower than 25 ° C. in summer and higher than 25 ° C. in winter. In this way, even if the set temperature is the same, whether the temperature of the air discharged from the air conditioner, that is, the heating function in which hot air is discharged, or whether the cooling function in which cold air is discharged is exhibited, It depends on the external environment.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a switch device for a car air conditioner that can easily determine a set temperature.

In order to solve the above problems, a first aspect of the present invention, have a A / C switch operated when exerting a temperature setting switch and cooling function is operated to set the air-conditioning temperature, room In a switch device of a car air conditioner that air-conditions a vehicle interior so that the temperature approaches the air conditioning temperature corresponding to the operation position of the temperature setting switch, the air conditioning wind that is provided corresponding to the operation range of the temperature setting switch and that is discharged The gist is to provide a display device that suggests whether the discharged air-conditioning air is warm or cold on the basis of a portion corresponding to the operation position of the temperature setting switch where the temperature and the room temperature are equal .

  According to this configuration, the user can recognize the temperature of the conditioned air, that is, whether the discharged air is warm or cold through visual recognition of the display device. For this reason, it is easy to determine how many times the set temperature is set to obtain a desired hot or cold air. Therefore, the usability of the car air conditioner is improved.

Further , it is easy to determine how much the temperature setting switch is operated and how many times the temperature setting switch is set to obtain the desired hot air or cold air. Therefore, the usability of the car air conditioner is improved.

Furthermore , the user can recognize the air conditioning type (cooling or heating) through visual recognition of the display device. That is, it can be easily recognized whether the desired hot air or cold air can be obtained by setting the temperature many times.

According to a second aspect of the present invention, in the switch device for a car air conditioner according to the first aspect, the temperature setting switch has a plurality of operation positions corresponding one-to-one with a plurality of set air conditioning temperatures. And the display device includes a plurality of light emitting units respectively corresponding to the plurality of operation positions or corresponding to the plurality of operation positions at a predetermined interval.

According to this configuration, it becomes easier to recognize whether the desired hot air or cold air can be obtained by setting the temperature more accurately.
According to a third aspect of the present invention, in the switch device for a car air conditioner according to the second aspect , when the A / C switch is turned off, the operating range of the temperature setting switch that cannot exhibit the cooling function. The gist of the present invention is to turn off the light emitting unit corresponding to the above.

According to this configuration, for example, it can be visually recognized that the car air conditioner cannot exhibit the cooling function when the set temperature is lowered.
According to a fourth aspect of the present invention, in the car air conditioner switch device according to any one of the first to third aspects, the room temperature is reduced unless the A / C switch is turned on to exhibit the cooling function. The gist is to blink the light source when the temperature is set in a temperature range that cannot be lowered.

  According to this configuration, it is possible to recognize that the A / C switch needs to be turned on in order to exert the cooling function through visual recognition of the A / C switch.

  In the present invention, since the air-conditioning air temperature discharged can be transmitted by the switch device of the car air conditioner, the set temperature can be easily determined.

The block diagram which shows schematic structure of the car air conditioner of this embodiment. The front view which shows the switch apparatus of the car air conditioner of this embodiment. FIG. 5 is a correspondence diagram between display colors of indicators 15 and 16 and reference set temperatures. The flowchart which shows the process sequence which calculates the reference setting temperature in ECU. The flowchart which shows the process sequence of the air-conditioning control in ECU. The flowchart which shows the process sequence of the display control in a control unit. (A) shows the temperature when the A / C switch 6 is turned on, (b) shows the temperature when the A / C switch 6 is turned off, and (c) shows the temperature when the A / C switch is turned off. The front view which shows the switch apparatus of a car air conditioner when the setting is instruct | indicating below ventilation temperature. The front view which shows the switch apparatus of the car air conditioner of another example of this embodiment.

Hereinafter, an embodiment of a switch device for a car air conditioner according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the car air conditioner 1 includes information from an inside air sensor 2, an outside air sensor 3, a solar radiation sensor 4, a temperature setting dial 5, an A / C switch 6, and a changeover switch 19 that are mounted on a vehicle (not shown). The ECU 8 is controlled based on the above. The changeover switch 19 switches between introduction of outside air into the vehicle interior and circulation of inside air through a push operation. The inside air sensor 2 acquires temperature information and humidity information in the vehicle compartment and inputs the information to the ECU 8. The outside air sensor 3 acquires temperature information and humidity information outside the vehicle compartment, and inputs the information to the ECU 8. The solar radiation sensor 4 acquires information on the amount of solar radiation poured into the vehicle compartment, and inputs the information to the ECU 8. The temperature setting dial 5 is operated by the user and inputs user's desired temperature information (desired set temperature) to the ECU 8. An indicator 15 that displays a plurality of colors is provided in the vicinity of the temperature setting dial 5. The A / C switch 6 is operated by the user to switch the A / C function of the air conditioner, that is, whether to operate the cooling / dehumidifying function. Further, inside the A / C switch 6, for example, a light source 16 is provided as a notification unit made of a blue LED. The knob of the A / C switch 6 has light transparency, and light from the light source 16 leaks to the outside through the knob. That is, the knob is illuminated from the inside. The ECU 8 calculates a reference set temperature based on information input through each sensor and the like, calculates an optimal control state (necessary blown air temperature, air volume, etc.) for air conditioning to a desired set temperature, and performs air conditioning based on this. Take control. The reference set temperature is a desired set temperature that can be set by the temperature setting dial 5 when the required blown air temperature and the room temperature are equal. The necessary blown air temperature is the temperature of the conditioned air that the car air conditioner 1 needs to discharge in order to air-condition to the desired set temperature. Further, the ECU 8 outputs control information indicating the reference set temperature and the control state to the control unit 9. The control unit 9 performs lighting control of the indicator 15 and the light source 16 through control of the display control device 10 based on control information from the ECU 8.

  As shown in FIG. 2, the temperature setting dial 5, the A / C switch 6, and the indicator 15 are provided on a dashboard in the vehicle interior. The temperature setting dial 5 has an annular shape surrounding a changeover switch 19 provided on the dashboard. The temperature setting dial 5 is provided with a temperature indicating portion 5a that protrudes outward toward the outside. The temperature setting dial 5 can be rotated from the 7 o'clock position to the 5 o'clock position through the 12 o'clock position with reference to the temperature instruction portion 5a. The temperature setting dial 5 is capable of setting a desired room temperature for every 0.5 degrees Celsius depending on the operation position of the temperature instruction section 5a.

  The indicator 15 is provided outside the temperature setting dial 5. The indicator 15 includes 15 indicator LEDs 15a to 15o (full color LEDs). Each of the indicator LEDs 15a to 15o can emit three colors (red, blue, and white). Each of the indicator LEDs 15a to 15o can be shaded in five steps when red and blue are lit. The indicator LEDs 15a to 15o are arranged in an annular manner at regular intervals from the 7 o'clock position through the 12 o'clock position to the 5 o'clock position with the temperature setting dial 5 as the center. In the dashboard, on the outside of the indicator LEDs 15a, 15c, 15h, 15m, 15o arranged in the directions of 7 o'clock, 9 o'clock, 12 o'clock, 3 o'clock and 5 o'clock, “LO”, “20”, “25”, “30”, and “HI” are printed. The printed numbers and the like serve as an indication of the Celsius temperature that can be instructed by the temperature instructing unit 5a. The arrangement interval of the indicator LEDs 15a to 15o is 1 degree Celsius. In this example, the temperature setting dial 5 sets the temperature setting every 0.5 ° C. in the range of 18.5 ° C. to 31.5 ° C. by aligning the temperature indicator 5a with any of the indicator LEDs 15a to 15o. It is possible to do. That is, one of the indicator LEDs corresponds to two operation positions of the temperature setting dial 5. The operation position of the temperature setting dial 5 corresponding to the printing of “LO” and “HI” is provided so that the car air conditioner 1 can always perform the cooling function and the heating function regardless of the outside air temperature or the inside air temperature. “LO” and “HI” prints indicate whether the desired set temperature is lowered or raised when the temperature setting dial 5 is rotated. That is, if the temperature setting dial 5 is operated to the “LO” side, the desired set temperature decreases, and if it is operated to the “HI” side, the desired set temperature increases.

  An A / C switch 6 is provided further toward the 6 o'clock direction of the indicator LED 15a. When the A / C switch 6 is turned on and the car air conditioner 1 exhibits the A / C function, the built-in light source 16 is lit in blue. The presence / absence of the operation of the A / C function of the air conditioner, that is, the cooling / dehumidifying function, is indicated through whether the light source 16 is turned on.

  In the memory 9 a of the control unit 9, various control programs and indicator setting data corresponding to the cooling side and the heating side with the reference set temperature of the car air conditioner 1 calculated by the ECU 8 and lighting setting data of the light source 16 are stored. Is remembered. FIG. 3 shows lighting setting data D1 when the A / C switch 6 is turned on. In the lighting setting data D1, the temperature at which the car air conditioner 1 does not have to perform the heating function or the cooling function to air-condition the vehicle interior, that is, the necessary blowing air temperature and the room temperature become equal (the temperature difference becomes zero). It is set based on the reference set temperature. The necessary blowout air temperature is determined by the data of the temperature and humidity of the inside air and the outside air, the amount of solar radiation, and the desired set temperature. Accordingly, there may be a temperature difference between the desired set temperature and the required blown air temperature.

  The numerical values 1 to 5 displayed in FIG. 3 represent color shades depending on the size, and the larger the numerical value, the darker the color displayed on the indicator LEDs 15a to 15o. More specifically, when the reference set temperature is 19 ° C. or more and 31 ° C. or less, the indicator LED corresponding to the reference set temperature is displayed in white, the left indicator LED is centered on the indicator LED in blue, and the right indicator LED is red. Is set to be displayed. Further, the color is set so that the color becomes deeper as the distance from the white indicator LED increases. When the reference set temperature is 18 ° C or lower, all indicator LEDs except the indicator LED 15a are set to be displayed in red. When the reference set temperature is set to 32 ° C or higher, all indicator LEDs except the indicator LED 15o are set to be displayed in blue. ing. Although illustration is omitted, the lighting setting data D2 when the A / C switch 6 is turned off is that in which the blue color in FIG. 3 is turned off (does not emit light). The indicator LEDs 15a and 15o corresponding to the printing of “LO” and “HI” are set to always display blue and red. The operation position of the temperature setting dial 5 corresponding to the printing of “LO” and “HI” is provided so that the car air conditioner 1 always exhibits the cooling function and the heating function regardless of the outside air temperature or the inside air temperature. Because.

  The memory 9a stores blink setting data D3 of the light source 16, although not shown. This blinking setting data D3 is for blinking the light source 16 when the A / C switch 6 is turned off and the required blowing air temperature is set to a temperature lower than the room temperature.

Next, the control mode of the ECU 8 will be described according to the flowcharts shown in FIGS. When power is turned on from the vehicle, the ECU 8 starts calculating the reference set temperature.
As shown in the flowchart of FIG. 4, the ECU 8 acquires temperature and humidity data in the passenger compartment from the inside air sensor 2 (step S1), and acquires outside air temperature and humidity data from the outside air sensor 3 (step S2). ). Next, the ECU 8 acquires data on the amount of solar radiation from the solar radiation sensor 4 (step S3). Then, ON / OFF data of the A / C switch 6 is acquired (step S4), and ON / OFF data of the changeover switch 19 is acquired (step S5). The ECU 8 calculates a reference set temperature at which the necessary blowing air temperature and the room temperature are equal from these acquired data (step S6). Then, the calculated reference set temperature is output to the control unit 9 (step S7), and this series of processing ends.

Further, when the power is turned on from the vehicle, the ECU 8 starts to calculate the control mode of the car air conditioner 1 simultaneously with the calculation of the reference set temperature.
As shown in the flowchart of FIG. 5, the ECU 8 acquires various data from the inside air sensor 2, the outside air sensor 3, the solar radiation sensor 4, and the changeover switch 19 in the same manner as the calculation of the reference set temperature (steps S11, S12, S13, S14). Here, in order to simplify the following description, it is assumed that the switch 19 is turned on in step S14, that is, information indicating that the inside air circulation is input. Then, the ECU 8 acquires set temperature data (desired set temperature) from the temperature setting dial 5 (step S15).

  Next, the ECU 8 determines the required blowing air temperature based on various data acquired from step S11 to step S15 (step S16). Then, it is determined whether or not the determined necessary blowing air temperature is lower than the reference set temperature (step S17). If YES in step S17, that is, if the required blown air temperature is lower than the reference set temperature, that is, if the air conditioner needs to exhibit the cooling function, it is determined whether or not the A / C switch 6 is turned on (step). S18). If YES in step S18, that is, if the A / C switch 6 is turned on, the cooling function is performed to air-condition (step S19). If NO in step S18, that is, if the A / C switch 6 is turned off, the air-conditioning is not performed because the cooling function cannot be exhibited (step S20). And ECU8 outputs the signal which shows the information (control state) which shows the information of air-conditioning control to the control unit 9, here, whether the air_conditioning | cooling function is exhibited or not air-conditioned (step S21), This series of processing ends.

  If NO in step S6, that is, if the required blown air temperature is equal to or higher than the reference set temperature, it is determined whether the required blown air temperature is equal to the reference set temperature (step S22). If YES in step S22, that is, if the necessary blown air temperature is equal to the reference set temperature, air conditioning is performed by blowing air (step S23), and then the process proceeds to step S21, and this series of processes ends. If NO in step S22, that is, if the necessary blown air temperature is higher than the reference set temperature, the heating function is performed to air-condition (step S24), and then the process proceeds to step S21. finish.

  Next, lighting control of the indicator LEDs 15a to 15o and the light source 16 will be described with reference to the flowchart shown in FIG. This flowchart is executed according to the control program stored in the memory 9a. The flowchart is executed when the vehicle is powered on. The indicator LEDs 15a to 15o and the light source 16 are maintained in the off state unless the control unit 9 is turned on.

  When the vehicle is turned on, as shown in FIG. 6, the control unit 9 first acquires the reference set temperature of the car air conditioner 1 and the actual control information from the ECU 8 (step S31). Then, it is determined whether or not the A / C switch 6 is turned on (step S32). If YES in step S32, that is, if the A / C switch 6 is turned on, data corresponding to the reference set temperature is read from the lighting setting data D1 (step S33). Then, the indicator LED is turned on based on the read lighting setting data through the display control device (step S34), and this series of processing is terminated.

  If NO in step S32, that is, if the A / C switch 6 is turned off, data corresponding to the reference set temperature is read from the lighting setting data D2 (step S35). Then, it is determined whether or not the desired set temperature is equal to or higher than the reference set temperature (step S36). If YES in step S36, that is, if the desired set temperature is equal to or higher than the reference set temperature, the process proceeds to step S34, and this series of processes ends. If NO in step S36, that is, if the desired set temperature is lower than the reference set temperature, the blink setting data D3 of the A / C switch 6 is read (step S37). Then, the process proceeds to step S34, and this series of processes is terminated.

  Next, display modes of the indicator LEDs 15a to 15o and the light source 16 when the process of the previous step S34 is executed in the control unit 9 will be described with reference to FIGS. 7 (a) to (c). Here, the case where the reference set temperature is 25 ° C. will be described as a representative.

  FIG. 7A shows a lighting state of the indicator 15 when the A / C switch 6 is on, and FIG. 7B shows the lighting state of the indicator 15 when the A / C switch 6 is off. Since the display color of the indicator 15 is set based on the reference set temperature, for example, when the user desires heating, an area in which the temperature indicator 5a of the temperature setting dial 5 is lit in red on the indicator 15 If it matches with (for example, indicator LED15m), the blowing wind discharged from the car air conditioner 1 will become warm. On the other hand, when the user desires cooling, if the temperature indication portion 5a of the temperature setting dial 5 is set to the blue lighted area of the indicator 15 (for example, the indicator LED 15c), the blown air discharged from the car air conditioner 1 becomes cold. .

  Here, there are cases where the user desires cooling with the A / C switch 6 turned off. For example, as shown in FIG. 7 (c), the temperature indicating portion 5a of the temperature setting dial 5 is set to a temperature (here, 22 ° C.) lower than room temperature (25 ° C.). . At this time, the car air conditioner 1 cannot exhibit the cooling function because the A / C switch 6 is not turned on. Therefore, as shown in FIG. 7C, the A / C switch 6 is blinked. Thereby, the user can recognize that the cooling function is not exhibited even if the desired setting temperature is set to a low temperature through the temperature setting dial 5. Further, the user is prompted to turn on the A / C switch 6. When the A / C switch 6 is off, the areas corresponding to the temperature lower than the reference set temperature (25 ° C.), in this case, the indicator LEDs 15a to 15g are not lit. That is, since the indicator LEDs 15a to 15g are not displayed in blue, the user can recognize that the car air conditioner 1 cannot exhibit the cooling function when the desired set temperature is lowered by visually recognizing it.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) Indicator LEDs 15 a to 15 o corresponding to the set temperature displayed on the dashboard are provided around the temperature setting dial 5. The indicator LEDs 15a to 15o are lit in blue, red, and white according to the wind temperature discharged from the car air conditioner 1. Thereby, the user can recognize whether the conditioned air becomes cold or warm by adjusting the temperature instruction part 5a of the temperature setting dial 5 through visual recognition of the indicator LEDs 15a to 15o.

  (2) When the A / C switch 6 is turned off, the indicator LEDs 15a to 15o at room temperature or lower are turned off (no light is emitted). Thereby, the user can recognize through the visual recognition of the indicator LEDs 15a to 15o that the car air conditioner 1 cannot exhibit the cooling function when the desired set temperature is lowered.

  (3) The A / C switch 6 (light source 16) blinks when the temperature instruction unit 5a points to any of the indicator LEDs 15a to 15o that are not emitting light. Thereby, the user can recognize through the visual recognition of the A / C switch 6 that it is necessary to turn on the A / C switch 6 in order to exhibit the cooling function.

  (4) The indicator LEDs 15a to 15o are turned on in a darker color as the temperature of the conditioned air is larger from the room temperature and lighter as the temperature is smaller. Thereby, the user can estimate the temperature of the conditioned air only by visually recognizing the shades of the indicator LEDs 15a to 15o.

  (5) When the temperature instruction section 5a is combined, the indicator LEDs 15a to 15o that discharge cool air, that is, exhibit a cooling function, are lit in blue. By adopting the cold blue color, the user can easily recognize that the car air conditioner 1 can exhibit the cooling function if the temperature is set.

  (6) When the temperature instruction unit 5a is combined, the indicator LEDs 15a to 15o that discharge hot air, that is, exhibit the heating function, are lit in red. By adopting a warm red color, the user can easily recognize that the car air conditioner 1 can exhibit the cooling function if the temperature is set.

In addition, you may change the said embodiment as follows.
In the above-described embodiment, the reference set temperature when the required blowing air temperature and the room temperature are equal to each other has been described with respect to the user's desired set temperature. However, a plurality of reference set temperatures may be used. That is, a temperature range may exist in the reference set temperature. In this case, among the indicator LEDs 15a to 15o, the indicator LED corresponding to the temperature range of the reference set temperature is displayed in white. Even in such a case, it is possible to obtain the same effect as the above embodiment.

  In the above embodiment, the temperature setting dial 5 that can change the set temperature by rotating is adopted, but this may be, for example, a sliding temperature setting bar. In this case, the indicator LEDs 15a to 15o are arranged along the slide direction of the bar. Even if comprised in this way, the effect similar to the said embodiment can be acquired.

  -In above-mentioned embodiment, although the color of indicator LED15a-15o was changed according to the air-conditioning classification (heating, air_conditioning | cooling), it may change to indicator LED15a-15o, for example and you may employ | adopt display apparatuses, such as a display. In this case, characters, symbols (marks), etc. (for example, heating / cooling) may be displayed. Even if comprised in this way, the user can perform desired temperature setting smoothly through visual recognition of a display apparatus. In the display device such as a liquid crystal display, a method for inputting a desired set temperature or the like is not limited. For example, it may be a touch-type liquid crystal display that can perform a desired setting by a touch operation that is often used in navigation systems.

  In the above embodiment, the strength of the warm air and the cool air is expressed by the shades of colors displayed on the indicator LEDs 15a to 15o. For example, instead of the indicator LEDs 15a to 15o, a display device such as a liquid crystal display is adopted. You may display the strength of warm air and cold air on a display device by characters or the like (weak, medium, strong, etc.). FIG. 8 shows a switch device of a car air conditioner using a liquid crystal display as a display device.

  As shown in FIG. 8, the switch device 60 of the car air conditioner includes a circular push button type A / C switch 61 and a temperature setting dial 62 provided so as to surround the periphery thereof. The switch device 60 includes an illumination unit 63 provided on the left side of the temperature setting dial 62 and extending in the vertical direction, and a liquid crystal display 64 provided further on the left side thereof. The surface of the illuminating unit 63 is a transmissive unit with white at the center, red at the top, and blue at the bottom, and the user can visually recognize the color when the illuminating unit 63 emits light. Note that the upper red color and the lower blue color become darker as the distance from the center increases. The liquid crystal display 64 displays a desired set temperature input by turning on / off the A / C switch 61 and rotating the temperature setting dial 62. The desired set temperature is displayed at the center of the liquid crystal display 64. The liquid crystal display displays the desired set temperature every 0.5 ° C.

  On the liquid crystal display 64 of this example, a linear bar 65 indicating the required blowing air temperature is displayed between the display position of the desired set temperature and the illumination unit 63. The bar 65 moves up and down in accordance with the required blowing air temperature that varies depending on the desired set temperature. That is, the bar 65 has a required blowing air temperature at a position corresponding to white display if the required blowing air temperature is the same as the room temperature, and a position corresponding to blue display if the necessary blowing air temperature is lower than the room temperature. If it is higher than room temperature, it moves to a position corresponding to the red display. At this time, the bar 65 moves to the upper side and the lower side, that is, the darker side of the illumination unit 63 as the temperature difference between the required blowing air temperature and the room temperature increases. When comprised in this way, when a user sets desired setting temperature, the wind temperature discharged can be recognized. Also, it can be recognized how warm or cold the discharged wind temperature is. In other words, the user can smoothly set the desired set temperature for discharging the conditioned air at the desired temperature by operating the temperature setting dial 62 while confirming the position of the bar 65.

  In the above embodiment, when the A / C switch 6 is off, the indicator LEDs 15a to 15o corresponding to the uncontrollable temperature are not lit, but may be lit. In this case, it is desirable to light up with a color different from the case of cooling (blue), heating (red), and blowing (white). With this configuration, it is easy to recognize that the temperature is an uncontrollable temperature.

  In the above embodiment, when the A / C switch 6 is turned off and the desired set temperature is set to an uncontrollable temperature, the A / C switch 6 (light source 16) is blinked. However, what is necessary is just to promote the ON operation of the A / C switch 6. For example, the A / C switch 6 is lit in a different color from the above embodiment. Even in this case, it is possible to recognize that the car air conditioner cannot exhibit the cooling function unless the A / C switch 6 is turned on.

  -In above-mentioned embodiment, although indicator LED15a-15o was arrange | positioned for every unit temperature which can be set with the temperature setting dial 5, it does not need to be for every unit temperature. Moreover, indicator LED15a-15o may be the state which connected these, ie, a semi-annular indicator. Even in such a configuration, the user can recognize whether the conditioned air is hot or cold when the desired set temperature is increased.

  In the above embodiment, control is disabled only in the temperature range below the reference set temperature when the A / C switch 6 is off. However, the car air-conditioner 1 cannot discharge hot air when the heat source (for example, engine coolant) is not warmed at the time of starting the vehicle. That is, hot air cannot be discharged even if the temperature setting is increased at this time. Therefore, the indicator LEDs 15a to 15o corresponding to a temperature equal to or higher than the reference set temperature may be turned off until the heat source is warmed. In this way, it is possible to notify that the car air conditioner cannot discharge hot air even if the desired set temperature is increased.

  -In the said embodiment, although the light and shade when indicator LED15a-15o lighted was made into five steps, there should just be two or more steps. If there are a plurality of stages, the user recognizes how much the temperature of the discharged hot or cold air is different from the reference set temperature when operating the temperature setting dial 5 through visual recognition of the indicator LEDs 15a to 15o. be able to.

  -In the said embodiment, the light and shade when indicator LED15a-15o lights may be unnecessary. That is, it may be one stage. Even if comprised in this way, the user can recognize how much the hot air or the cold air is discharged by operating the temperature setting dial 5 through visual recognition of the indicator LEDs 15a to 15o.

  In the above embodiment, the operation position of the temperature setting dial 5 is set to 0.5 ° C., but may be set to 1 ° C., that is, corresponding to the arrangement interval of the indicator LEDs 15a to 15o. By configuring in this way, it becomes easier to recognize whether the desired hot air or cold air can be obtained if the desired set temperature is set more accurately.

  In the above embodiment, when the temperature instruction unit 5a is operated at the operation position corresponding to the printing of “LO” and “HI”, the car air conditioner 1 always exhibits the cooling function and the heating function. Similarly to the position, the function exhibited by the car air conditioner 1 may be changed corresponding to the room temperature. Accordingly, the lighting color of the indicator LEDs 15a and 15o also changes accordingly. Specifically, the indications “LO” and “HI” mean maximum cooling and maximum heating, and the corresponding indicator LEDs 15a and 15o are always lit in the darkest blue 5 and red 5, Considering the difference from room temperature, the darkness of blue and red may be changed in the same manner as the indicator LEDs 15b to 15n corresponding to other temperatures. Alternatively, it may be displayed in white. Even in this case, it is possible to notify the air conditioning function that is exhibited when the temperature instruction unit 5a is operated at the operation position corresponding to the printing of “LO” and “HI”.

  In the above-described embodiment, the case where the car air conditioner 1 performs air conditioning with the inside air circulation has been described. For this reason, in order to lower the room temperature, the car air conditioner 1 is limited to a case where the cooling function is exhibited. However, when the outside air temperature is lower than the room temperature, the room temperature can be lowered by introducing the outside air into the room. That is, even when the A / C switch 6 is not turned on, the car air conditioner 1 (ECU 8) can switch the inside air circulation to the outside air introduction to lower the indoor temperature. In this case, in the flowchart of FIG. 4, a step of determining whether or not the outside air temperature is lower than the room temperature is introduced between step S7 and step S9. If YES in this step, that is, if the outside air temperature is lower than the room temperature, the ECU 8 air-conditions the room by introducing the outside air into the room. By doing so, the indoor temperature can be lowered. If NO in this step, that is, if the outside air temperature is higher than the room temperature, the process proceeds to step S9 shown in FIG.

  In addition, about the lighting color of indicator LED15a-15o in the case of lowering | hanging indoor temperature by external air introduction, it may be the same as that at the time of cooling, and may be made different. When making it different, for example, it is lit in a color reminiscent of nature and plants such as green. Thereby, it can alert | report that air is introduced and air-conditioning is carried out indoors. In this case, since the room temperature can be lowered, it is not necessary to blink the A / C switch 6 (indicator 16).

  In the above embodiment, the display color of the indicator LED is white, that is, the condition that the car air conditioner 1 blows air is the case where there is no temperature difference between the required blowing air temperature and room temperature, but is limited to the case where there is no temperature difference. Not. For example, the temperature difference between the required blowing air temperature and room temperature may be less than 1 ° C or less than 3 ° C. Moreover, when the required blowing air temperature is higher than room temperature, the temperature difference may be less than 1 ° C, and when the temperature difference is lower, the temperature difference may be less than 3 ° C. That is, a plurality of indicator LEDs 15b to 15n may be displayed in white. Even if comprised in this way, the user can recognize how much the temperature of the warm air or cold air discharged has a temperature difference from room temperature through visual recognition of the indicator.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) The switch device for a car air conditioner according to any one of claims 3 to 6, wherein when the car air conditioner can exhibit a cooling function, the indicator is lighted in a cool color. .

According to this configuration, the user can easily recognize that the air conditioner can exhibit the cooling function by adopting a cold color such as blue.
(B) The switch device for a car air conditioner according to any one of claims 3 to 6, wherein when the car air conditioner can perform a heating function, the indicator is turned on in a warm color. .

  According to this configuration, the user can easily recognize that the air conditioner can exhibit the heating function by adopting a warm color such as red.

D1, D2 ... lighting setting data, D3 ... blinking setting data, 1 ... car air conditioner, 2 ... inside air sensor, 3 ... outside air sensor, 4 ... solar radiation sensor, 5, 62 ... temperature setting dial, 5a ... temperature indicator, 6, 61 ... A / C switch, 7 ... Water thermometer, 8 ... ECU, 9 ... Control unit, 9a ... Memory, 10 ... Display control device, 15 ... Indicator, 15a-15o ... Indicator LED (light emitting part), 16 ... Light source, DESCRIPTION OF SYMBOLS 19 ... Changeover switch, 60 ... Switch apparatus, 63 ... Illumination part, 64 ... Liquid crystal display, 65 ... Bar.

Claims (4)

Have a A / C switch operated when exerting a temperature setting switch and cooling function is operated to set the air-conditioning temperature, to approach the air-conditioning temperature to room temperature corresponding to the operation position of the temperature setting switch In a car air conditioner switch device that air- conditions the interior of the vehicle ,
Whether the discharged air-conditioning air is warm with reference to the portion corresponding to the operation position of the temperature setting switch, which is provided corresponding to the operating range of the temperature setting switch and the temperature of the discharged air-conditioning air is equal to the room temperature . A switch device for a car air conditioner equipped with a display device that indicates whether it is cold. The switch device for a car air conditioner according to claim 1 ,
The temperature setting switch includes a plurality of operation positions that correspond one-to-one to a plurality of air conditioning temperatures that can be set,
The switch device of a car air conditioner provided with a plurality of light emission parts corresponding to each of the plurality of operation positions, or corresponding to the plurality of operation positions at a constant interval. The switch device for a car air conditioner according to claim 2 ,
A switch device for a car air conditioner that turns off the light emitting unit corresponding to the operating range of the temperature setting switch that cannot exhibit a cooling function when the A / C switch is turned off. In the switch apparatus of the car air conditioner as described in any one of Claims 1-3 ,
A light source is provided in the A / C switch,
In the case where the A / C switch is turned off, the temperature of the light source is set when the temperature is set in a temperature range where the room temperature cannot be lowered unless the A / C switch is turned on to exhibit the cooling function. Car air conditioner switch device to flash.

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